1 /* tc-ppc.c -- Assemble for the PowerPC or POWER (RS/6000)
2 Copyright (C) 1994-2024 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
4
5 This file is part of GAS, the GNU Assembler.
6
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
10 any later version.
11
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
20 02110-1301, USA. */
21
22 #include "as.h"
23 #include "safe-ctype.h"
24 #include "subsegs.h"
25 #include "dw2gencfi.h"
26 #include "opcode/ppc.h"
27
28 #ifdef OBJ_ELF
29 #include "elf/ppc.h"
30 #include "elf/ppc64.h"
31 #include "dwarf2dbg.h"
32 #endif
33
34 #ifdef OBJ_XCOFF
35 #include "coff/xcoff.h"
36 #include "libxcoff.h"
37 #endif
38
39 /* This is the assembler for the PowerPC or POWER (RS/6000) chips. */
40
41 /* Tell the main code what the endianness is. */
42 extern int target_big_endian;
43
44 /* Whether or not, we've set target_big_endian. */
45 static int set_target_endian = 0;
46
47 /* Whether to use user friendly register names. */
48 #ifndef TARGET_REG_NAMES_P
49 #define TARGET_REG_NAMES_P false
50 #endif
51
52 /* Macros for calculating LO, HI, HA, HIGHER, HIGHERA, HIGHEST,
53 HIGHESTA. */
54
55 /* #lo(value) denotes the least significant 16 bits of the indicated. */
56 #define PPC_LO(v) ((v) & 0xffff)
57
58 /* #hi(value) denotes bits 16 through 31 of the indicated value. */
59 #define PPC_HI(v) (((v) >> 16) & 0xffff)
60
61 /* #ha(value) denotes the high adjusted value: bits 16 through 31 of
62 the indicated value, compensating for #lo() being treated as a
63 signed number. */
64 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
65
66 /* #higher(value) denotes bits 32 through 47 of the indicated value. */
67 #define PPC_HIGHER(v) (((v) >> 16 >> 16) & 0xffff)
68
69 /* #highera(value) denotes bits 32 through 47 of the indicated value,
70 compensating for #lo() being treated as a signed number. */
71 #define PPC_HIGHERA(v) PPC_HIGHER ((v) + 0x8000)
72
73 /* #highest(value) denotes bits 48 through 63 of the indicated value. */
74 #define PPC_HIGHEST(v) (((v) >> 24 >> 24) & 0xffff)
75
76 /* #highesta(value) denotes bits 48 through 63 of the indicated value,
77 compensating for #lo being treated as a signed number. */
78 #define PPC_HIGHESTA(v) PPC_HIGHEST ((v) + 0x8000)
79
80 #define SEX16(val) (((val) ^ 0x8000) - 0x8000)
81
82 /* For the time being on ppc64, don't report overflow on @h and @ha
83 applied to constants. */
84 #define REPORT_OVERFLOW_HI 0
85
86 static bool reg_names_p = TARGET_REG_NAMES_P;
87
88 static void ppc_byte (int);
89
90 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
91 static void ppc_tc (int);
92 static void ppc_machine (int);
93 #endif
94
95 #ifdef OBJ_XCOFF
96 static void ppc_comm (int);
97 static void ppc_bb (int);
98 static void ppc_bc (int);
99 static void ppc_bf (int);
100 static void ppc_biei (int);
101 static void ppc_bs (int);
102 static void ppc_eb (int);
103 static void ppc_ec (int);
104 static void ppc_ef (int);
105 static void ppc_es (int);
106 static void ppc_csect (int);
107 static void ppc_dwsect (int);
108 static void ppc_change_csect (symbolS *, offsetT);
109 static void ppc_file (int);
110 static void ppc_function (int);
111 static void ppc_extern (int);
112 static void ppc_globl (int);
113 static void ppc_lglobl (int);
114 static void ppc_ref (int);
115 static void ppc_section (int);
116 static void ppc_named_section (int);
117 static void ppc_stabx (int);
118 static void ppc_rename (int);
119 static void ppc_toc (int);
120 static void ppc_xcoff_cons (int);
121 static void ppc_vbyte (int);
122 static void ppc_weak (int);
123 static void ppc_GNU_visibility (int);
124 #endif
125
126 #ifdef OBJ_ELF
127 static void ppc_elf_rdata (int);
128 static void ppc_elf_lcomm (int);
129 static void ppc_elf_localentry (int);
130 static void ppc_elf_abiversion (int);
131 static void ppc_elf_gnu_attribute (int);
132 #endif
133
134 /* Generic assembler global variables which must be defined by all
135 targets. */
136
137 #ifdef OBJ_ELF
138 /* This string holds the chars that always start a comment. If the
139 pre-processor is disabled, these aren't very useful. The macro
140 tc_comment_chars points to this. We use this, rather than the
141 usual comment_chars, so that we can switch for Solaris conventions. */
142 static const char ppc_solaris_comment_chars[] = "#!";
143 static const char ppc_eabi_comment_chars[] = "#";
144
145 #ifdef TARGET_SOLARIS_COMMENT
146 const char *ppc_comment_chars = ppc_solaris_comment_chars;
147 #else
148 const char *ppc_comment_chars = ppc_eabi_comment_chars;
149 #endif
150 #else
151 const char comment_chars[] = "#";
152 #endif
153
154 /* Characters which start a comment at the beginning of a line. */
155 const char line_comment_chars[] = "#";
156
157 /* Characters which may be used to separate multiple commands on a
158 single line. */
159 const char line_separator_chars[] = ";";
160
161 /* Characters which are used to indicate an exponent in a floating
162 point number. */
163 const char EXP_CHARS[] = "eE";
164
165 /* Characters which mean that a number is a floating point constant,
166 as in 0d1.0. */
167 const char FLT_CHARS[] = "dD";
168
169 /* Anything that can start an operand needs to be mentioned here,
170 to stop the input scrubber eating whitespace. */
171 const char ppc_symbol_chars[] = "%[";
172
173 /* The dwarf2 data alignment, adjusted for 32 or 64 bit. */
174 int ppc_cie_data_alignment;
175
176 /* The dwarf2 minimum instruction length. */
177 int ppc_dwarf2_line_min_insn_length;
178
179 /* More than this number of nops in an alignment op gets a branch
180 instead. */
181 unsigned long nop_limit = 4;
182
183 /* The type of processor we are assembling for. This is one or more
184 of the PPC_OPCODE flags defined in opcode/ppc.h. */
185 ppc_cpu_t ppc_cpu = 0;
186 ppc_cpu_t sticky = 0;
187
188 /* Value for ELF e_flags EF_PPC64_ABI. */
189 unsigned int ppc_abiversion = 0;
190
191 #ifdef OBJ_ELF
192 /* Flags set on encountering toc relocs. */
193 static enum {
194 has_large_toc_reloc = 1,
195 has_small_toc_reloc = 2
196 } toc_reloc_types;
197 #endif
198
199 /* Warn on emitting data to code sections. */
200 int warn_476;
201 uint64_t last_insn;
202 segT last_seg;
203 subsegT last_subseg;
204
205 /* The target specific pseudo-ops which we support. */
206
207 const pseudo_typeS md_pseudo_table[] =
208 {
209 /* Pseudo-ops which must be overridden. */
210 { "byte", ppc_byte, 0 },
211
212 #ifdef OBJ_XCOFF
213 /* Pseudo-ops specific to the RS/6000 XCOFF format. Some of these
214 legitimately belong in the obj-*.c file. However, XCOFF is based
215 on COFF, and is only implemented for the RS/6000. We just use
216 obj-coff.c, and add what we need here. */
217 { "comm", ppc_comm, 0 },
218 { "lcomm", ppc_comm, 1 },
219 { "bb", ppc_bb, 0 },
220 { "bc", ppc_bc, 0 },
221 { "bf", ppc_bf, 0 },
222 { "bi", ppc_biei, 0 },
223 { "bs", ppc_bs, 0 },
224 { "csect", ppc_csect, 0 },
225 { "dwsect", ppc_dwsect, 0 },
226 { "data", ppc_section, 'd' },
227 { "eb", ppc_eb, 0 },
228 { "ec", ppc_ec, 0 },
229 { "ef", ppc_ef, 0 },
230 { "ei", ppc_biei, 1 },
231 { "es", ppc_es, 0 },
232 { "extern", ppc_extern, 0 },
233 { "file", ppc_file, 0 },
234 { "function", ppc_function, 0 },
235 { "globl", ppc_globl, 0 },
236 { "lglobl", ppc_lglobl, 0 },
237 { "ref", ppc_ref, 0 },
238 { "rename", ppc_rename, 0 },
239 { "section", ppc_named_section, 0 },
240 { "stabx", ppc_stabx, 0 },
241 { "text", ppc_section, 't' },
242 { "toc", ppc_toc, 0 },
243 { "long", ppc_xcoff_cons, 2 },
244 { "llong", ppc_xcoff_cons, 3 },
245 { "word", ppc_xcoff_cons, 1 },
246 { "short", ppc_xcoff_cons, 1 },
247 { "vbyte", ppc_vbyte, 0 },
248 { "weak", ppc_weak, 0 },
249
250 /* Enable GNU syntax for symbol visibility. */
251 {"internal", ppc_GNU_visibility, SYM_V_INTERNAL},
252 {"hidden", ppc_GNU_visibility, SYM_V_HIDDEN},
253 {"protected", ppc_GNU_visibility, SYM_V_PROTECTED},
254 #endif
255
256 #ifdef OBJ_ELF
257 { "llong", cons, 8 },
258 { "rdata", ppc_elf_rdata, 0 },
259 { "rodata", ppc_elf_rdata, 0 },
260 { "lcomm", ppc_elf_lcomm, 0 },
261 { "localentry", ppc_elf_localentry, 0 },
262 { "abiversion", ppc_elf_abiversion, 0 },
263 { "gnu_attribute", ppc_elf_gnu_attribute, 0},
264 #endif
265
266 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
267 { "tc", ppc_tc, 0 },
268 { "machine", ppc_machine, 0 },
269 #endif
270
271 { NULL, NULL, 0 }
272 };
273
274
275 /* Predefined register names if -mregnames (or default for Windows NT).
276 In general, there are lots of them, in an attempt to be compatible
277 with a number of other Windows NT assemblers. */
278
279 /* Structure to hold information about predefined registers. */
280 struct pd_reg
281 {
282 char name[6];
283 unsigned short value;
284 unsigned short flags;
285 };
286
287 /* List of registers that are pre-defined:
288
289 Each general register has predefined names of the form:
290 1. r<reg_num> which has the value <reg_num>.
291 2. r.<reg_num> which has the value <reg_num>.
292
293 Each floating point register has predefined names of the form:
294 1. f<reg_num> which has the value <reg_num>.
295 2. f.<reg_num> which has the value <reg_num>.
296
297 Each vector unit register has predefined names of the form:
298 1. v<reg_num> which has the value <reg_num>.
299 2. v.<reg_num> which has the value <reg_num>.
300
301 Each condition register has predefined names of the form:
302 1. cr<reg_num> which has the value <reg_num>.
303 2. cr.<reg_num> which has the value <reg_num>.
304
305 There are individual registers as well:
306 sp or r.sp has the value 1
307 rtoc or r.toc has the value 2
308 xer has the value 1
309 lr has the value 8
310 ctr has the value 9
311 dar has the value 19
312 dsisr has the value 18
313 dec has the value 22
314 sdr1 has the value 25
315 srr0 has the value 26
316 srr1 has the value 27
317
318 The table is sorted. Suitable for searching by a binary search. */
319
320 static const struct pd_reg pre_defined_registers[] =
321 {
322 /* VSX accumulators. */
323 { "a0", 0, PPC_OPERAND_ACC },
324 { "a1", 1, PPC_OPERAND_ACC },
325 { "a2", 2, PPC_OPERAND_ACC },
326 { "a3", 3, PPC_OPERAND_ACC },
327 { "a4", 4, PPC_OPERAND_ACC },
328 { "a5", 5, PPC_OPERAND_ACC },
329 { "a6", 6, PPC_OPERAND_ACC },
330 { "a7", 7, PPC_OPERAND_ACC },
331
332 /* Condition Registers */
333 { "cr.0", 0, PPC_OPERAND_CR_REG },
334 { "cr.1", 1, PPC_OPERAND_CR_REG },
335 { "cr.2", 2, PPC_OPERAND_CR_REG },
336 { "cr.3", 3, PPC_OPERAND_CR_REG },
337 { "cr.4", 4, PPC_OPERAND_CR_REG },
338 { "cr.5", 5, PPC_OPERAND_CR_REG },
339 { "cr.6", 6, PPC_OPERAND_CR_REG },
340 { "cr.7", 7, PPC_OPERAND_CR_REG },
341
342 { "cr0", 0, PPC_OPERAND_CR_REG },
343 { "cr1", 1, PPC_OPERAND_CR_REG },
344 { "cr2", 2, PPC_OPERAND_CR_REG },
345 { "cr3", 3, PPC_OPERAND_CR_REG },
346 { "cr4", 4, PPC_OPERAND_CR_REG },
347 { "cr5", 5, PPC_OPERAND_CR_REG },
348 { "cr6", 6, PPC_OPERAND_CR_REG },
349 { "cr7", 7, PPC_OPERAND_CR_REG },
350
351 { "ctr", 9, PPC_OPERAND_SPR },
352 { "dar", 19, PPC_OPERAND_SPR },
353 { "dec", 22, PPC_OPERAND_SPR },
354 { "dsisr", 18, PPC_OPERAND_SPR },
355
356 /* Dense Math Registers. */
357 { "dm0", 0, PPC_OPERAND_DMR },
358 { "dm1", 1, PPC_OPERAND_DMR },
359 { "dm2", 2, PPC_OPERAND_DMR },
360 { "dm3", 3, PPC_OPERAND_DMR },
361 { "dm4", 4, PPC_OPERAND_DMR },
362 { "dm5", 5, PPC_OPERAND_DMR },
363 { "dm6", 6, PPC_OPERAND_DMR },
364 { "dm7", 7, PPC_OPERAND_DMR },
365
366 /* Floating point registers */
367 { "f.0", 0, PPC_OPERAND_FPR },
368 { "f.1", 1, PPC_OPERAND_FPR },
369 { "f.10", 10, PPC_OPERAND_FPR },
370 { "f.11", 11, PPC_OPERAND_FPR },
371 { "f.12", 12, PPC_OPERAND_FPR },
372 { "f.13", 13, PPC_OPERAND_FPR },
373 { "f.14", 14, PPC_OPERAND_FPR },
374 { "f.15", 15, PPC_OPERAND_FPR },
375 { "f.16", 16, PPC_OPERAND_FPR },
376 { "f.17", 17, PPC_OPERAND_FPR },
377 { "f.18", 18, PPC_OPERAND_FPR },
378 { "f.19", 19, PPC_OPERAND_FPR },
379 { "f.2", 2, PPC_OPERAND_FPR },
380 { "f.20", 20, PPC_OPERAND_FPR },
381 { "f.21", 21, PPC_OPERAND_FPR },
382 { "f.22", 22, PPC_OPERAND_FPR },
383 { "f.23", 23, PPC_OPERAND_FPR },
384 { "f.24", 24, PPC_OPERAND_FPR },
385 { "f.25", 25, PPC_OPERAND_FPR },
386 { "f.26", 26, PPC_OPERAND_FPR },
387 { "f.27", 27, PPC_OPERAND_FPR },
388 { "f.28", 28, PPC_OPERAND_FPR },
389 { "f.29", 29, PPC_OPERAND_FPR },
390 { "f.3", 3, PPC_OPERAND_FPR },
391 { "f.30", 30, PPC_OPERAND_FPR },
392 { "f.31", 31, PPC_OPERAND_FPR },
393 { "f.32", 32, PPC_OPERAND_VSR },
394 { "f.33", 33, PPC_OPERAND_VSR },
395 { "f.34", 34, PPC_OPERAND_VSR },
396 { "f.35", 35, PPC_OPERAND_VSR },
397 { "f.36", 36, PPC_OPERAND_VSR },
398 { "f.37", 37, PPC_OPERAND_VSR },
399 { "f.38", 38, PPC_OPERAND_VSR },
400 { "f.39", 39, PPC_OPERAND_VSR },
401 { "f.4", 4, PPC_OPERAND_FPR },
402 { "f.40", 40, PPC_OPERAND_VSR },
403 { "f.41", 41, PPC_OPERAND_VSR },
404 { "f.42", 42, PPC_OPERAND_VSR },
405 { "f.43", 43, PPC_OPERAND_VSR },
406 { "f.44", 44, PPC_OPERAND_VSR },
407 { "f.45", 45, PPC_OPERAND_VSR },
408 { "f.46", 46, PPC_OPERAND_VSR },
409 { "f.47", 47, PPC_OPERAND_VSR },
410 { "f.48", 48, PPC_OPERAND_VSR },
411 { "f.49", 49, PPC_OPERAND_VSR },
412 { "f.5", 5, PPC_OPERAND_FPR },
413 { "f.50", 50, PPC_OPERAND_VSR },
414 { "f.51", 51, PPC_OPERAND_VSR },
415 { "f.52", 52, PPC_OPERAND_VSR },
416 { "f.53", 53, PPC_OPERAND_VSR },
417 { "f.54", 54, PPC_OPERAND_VSR },
418 { "f.55", 55, PPC_OPERAND_VSR },
419 { "f.56", 56, PPC_OPERAND_VSR },
420 { "f.57", 57, PPC_OPERAND_VSR },
421 { "f.58", 58, PPC_OPERAND_VSR },
422 { "f.59", 59, PPC_OPERAND_VSR },
423 { "f.6", 6, PPC_OPERAND_FPR },
424 { "f.60", 60, PPC_OPERAND_VSR },
425 { "f.61", 61, PPC_OPERAND_VSR },
426 { "f.62", 62, PPC_OPERAND_VSR },
427 { "f.63", 63, PPC_OPERAND_VSR },
428 { "f.7", 7, PPC_OPERAND_FPR },
429 { "f.8", 8, PPC_OPERAND_FPR },
430 { "f.9", 9, PPC_OPERAND_FPR },
431
432 { "f0", 0, PPC_OPERAND_FPR },
433 { "f1", 1, PPC_OPERAND_FPR },
434 { "f10", 10, PPC_OPERAND_FPR },
435 { "f11", 11, PPC_OPERAND_FPR },
436 { "f12", 12, PPC_OPERAND_FPR },
437 { "f13", 13, PPC_OPERAND_FPR },
438 { "f14", 14, PPC_OPERAND_FPR },
439 { "f15", 15, PPC_OPERAND_FPR },
440 { "f16", 16, PPC_OPERAND_FPR },
441 { "f17", 17, PPC_OPERAND_FPR },
442 { "f18", 18, PPC_OPERAND_FPR },
443 { "f19", 19, PPC_OPERAND_FPR },
444 { "f2", 2, PPC_OPERAND_FPR },
445 { "f20", 20, PPC_OPERAND_FPR },
446 { "f21", 21, PPC_OPERAND_FPR },
447 { "f22", 22, PPC_OPERAND_FPR },
448 { "f23", 23, PPC_OPERAND_FPR },
449 { "f24", 24, PPC_OPERAND_FPR },
450 { "f25", 25, PPC_OPERAND_FPR },
451 { "f26", 26, PPC_OPERAND_FPR },
452 { "f27", 27, PPC_OPERAND_FPR },
453 { "f28", 28, PPC_OPERAND_FPR },
454 { "f29", 29, PPC_OPERAND_FPR },
455 { "f3", 3, PPC_OPERAND_FPR },
456 { "f30", 30, PPC_OPERAND_FPR },
457 { "f31", 31, PPC_OPERAND_FPR },
458 { "f32", 32, PPC_OPERAND_VSR },
459 { "f33", 33, PPC_OPERAND_VSR },
460 { "f34", 34, PPC_OPERAND_VSR },
461 { "f35", 35, PPC_OPERAND_VSR },
462 { "f36", 36, PPC_OPERAND_VSR },
463 { "f37", 37, PPC_OPERAND_VSR },
464 { "f38", 38, PPC_OPERAND_VSR },
465 { "f39", 39, PPC_OPERAND_VSR },
466 { "f4", 4, PPC_OPERAND_FPR },
467 { "f40", 40, PPC_OPERAND_VSR },
468 { "f41", 41, PPC_OPERAND_VSR },
469 { "f42", 42, PPC_OPERAND_VSR },
470 { "f43", 43, PPC_OPERAND_VSR },
471 { "f44", 44, PPC_OPERAND_VSR },
472 { "f45", 45, PPC_OPERAND_VSR },
473 { "f46", 46, PPC_OPERAND_VSR },
474 { "f47", 47, PPC_OPERAND_VSR },
475 { "f48", 48, PPC_OPERAND_VSR },
476 { "f49", 49, PPC_OPERAND_VSR },
477 { "f5", 5, PPC_OPERAND_FPR },
478 { "f50", 50, PPC_OPERAND_VSR },
479 { "f51", 51, PPC_OPERAND_VSR },
480 { "f52", 52, PPC_OPERAND_VSR },
481 { "f53", 53, PPC_OPERAND_VSR },
482 { "f54", 54, PPC_OPERAND_VSR },
483 { "f55", 55, PPC_OPERAND_VSR },
484 { "f56", 56, PPC_OPERAND_VSR },
485 { "f57", 57, PPC_OPERAND_VSR },
486 { "f58", 58, PPC_OPERAND_VSR },
487 { "f59", 59, PPC_OPERAND_VSR },
488 { "f6", 6, PPC_OPERAND_FPR },
489 { "f60", 60, PPC_OPERAND_VSR },
490 { "f61", 61, PPC_OPERAND_VSR },
491 { "f62", 62, PPC_OPERAND_VSR },
492 { "f63", 63, PPC_OPERAND_VSR },
493 { "f7", 7, PPC_OPERAND_FPR },
494 { "f8", 8, PPC_OPERAND_FPR },
495 { "f9", 9, PPC_OPERAND_FPR },
496
497 /* Quantization registers used with pair single instructions. */
498 { "gqr.0", 0, PPC_OPERAND_GQR },
499 { "gqr.1", 1, PPC_OPERAND_GQR },
500 { "gqr.2", 2, PPC_OPERAND_GQR },
501 { "gqr.3", 3, PPC_OPERAND_GQR },
502 { "gqr.4", 4, PPC_OPERAND_GQR },
503 { "gqr.5", 5, PPC_OPERAND_GQR },
504 { "gqr.6", 6, PPC_OPERAND_GQR },
505 { "gqr.7", 7, PPC_OPERAND_GQR },
506 { "gqr0", 0, PPC_OPERAND_GQR },
507 { "gqr1", 1, PPC_OPERAND_GQR },
508 { "gqr2", 2, PPC_OPERAND_GQR },
509 { "gqr3", 3, PPC_OPERAND_GQR },
510 { "gqr4", 4, PPC_OPERAND_GQR },
511 { "gqr5", 5, PPC_OPERAND_GQR },
512 { "gqr6", 6, PPC_OPERAND_GQR },
513 { "gqr7", 7, PPC_OPERAND_GQR },
514
515 { "lr", 8, PPC_OPERAND_SPR },
516
517 /* General Purpose Registers */
518 { "r.0", 0, PPC_OPERAND_GPR },
519 { "r.1", 1, PPC_OPERAND_GPR },
520 { "r.10", 10, PPC_OPERAND_GPR },
521 { "r.11", 11, PPC_OPERAND_GPR },
522 { "r.12", 12, PPC_OPERAND_GPR },
523 { "r.13", 13, PPC_OPERAND_GPR },
524 { "r.14", 14, PPC_OPERAND_GPR },
525 { "r.15", 15, PPC_OPERAND_GPR },
526 { "r.16", 16, PPC_OPERAND_GPR },
527 { "r.17", 17, PPC_OPERAND_GPR },
528 { "r.18", 18, PPC_OPERAND_GPR },
529 { "r.19", 19, PPC_OPERAND_GPR },
530 { "r.2", 2, PPC_OPERAND_GPR },
531 { "r.20", 20, PPC_OPERAND_GPR },
532 { "r.21", 21, PPC_OPERAND_GPR },
533 { "r.22", 22, PPC_OPERAND_GPR },
534 { "r.23", 23, PPC_OPERAND_GPR },
535 { "r.24", 24, PPC_OPERAND_GPR },
536 { "r.25", 25, PPC_OPERAND_GPR },
537 { "r.26", 26, PPC_OPERAND_GPR },
538 { "r.27", 27, PPC_OPERAND_GPR },
539 { "r.28", 28, PPC_OPERAND_GPR },
540 { "r.29", 29, PPC_OPERAND_GPR },
541 { "r.3", 3, PPC_OPERAND_GPR },
542 { "r.30", 30, PPC_OPERAND_GPR },
543 { "r.31", 31, PPC_OPERAND_GPR },
544 { "r.4", 4, PPC_OPERAND_GPR },
545 { "r.5", 5, PPC_OPERAND_GPR },
546 { "r.6", 6, PPC_OPERAND_GPR },
547 { "r.7", 7, PPC_OPERAND_GPR },
548 { "r.8", 8, PPC_OPERAND_GPR },
549 { "r.9", 9, PPC_OPERAND_GPR },
550
551 { "r.sp", 1, PPC_OPERAND_GPR },
552
553 { "r.toc", 2, PPC_OPERAND_GPR },
554
555 { "r0", 0, PPC_OPERAND_GPR },
556 { "r1", 1, PPC_OPERAND_GPR },
557 { "r10", 10, PPC_OPERAND_GPR },
558 { "r11", 11, PPC_OPERAND_GPR },
559 { "r12", 12, PPC_OPERAND_GPR },
560 { "r13", 13, PPC_OPERAND_GPR },
561 { "r14", 14, PPC_OPERAND_GPR },
562 { "r15", 15, PPC_OPERAND_GPR },
563 { "r16", 16, PPC_OPERAND_GPR },
564 { "r17", 17, PPC_OPERAND_GPR },
565 { "r18", 18, PPC_OPERAND_GPR },
566 { "r19", 19, PPC_OPERAND_GPR },
567 { "r2", 2, PPC_OPERAND_GPR },
568 { "r20", 20, PPC_OPERAND_GPR },
569 { "r21", 21, PPC_OPERAND_GPR },
570 { "r22", 22, PPC_OPERAND_GPR },
571 { "r23", 23, PPC_OPERAND_GPR },
572 { "r24", 24, PPC_OPERAND_GPR },
573 { "r25", 25, PPC_OPERAND_GPR },
574 { "r26", 26, PPC_OPERAND_GPR },
575 { "r27", 27, PPC_OPERAND_GPR },
576 { "r28", 28, PPC_OPERAND_GPR },
577 { "r29", 29, PPC_OPERAND_GPR },
578 { "r3", 3, PPC_OPERAND_GPR },
579 { "r30", 30, PPC_OPERAND_GPR },
580 { "r31", 31, PPC_OPERAND_GPR },
581 { "r4", 4, PPC_OPERAND_GPR },
582 { "r5", 5, PPC_OPERAND_GPR },
583 { "r6", 6, PPC_OPERAND_GPR },
584 { "r7", 7, PPC_OPERAND_GPR },
585 { "r8", 8, PPC_OPERAND_GPR },
586 { "r9", 9, PPC_OPERAND_GPR },
587
588 { "rtoc", 2, PPC_OPERAND_GPR },
589
590 { "sdr1", 25, PPC_OPERAND_SPR },
591
592 { "sp", 1, PPC_OPERAND_GPR },
593
594 { "srr0", 26, PPC_OPERAND_SPR },
595 { "srr1", 27, PPC_OPERAND_SPR },
596
597 /* Vector (Altivec/VMX) registers */
598 { "v.0", 0, PPC_OPERAND_VR },
599 { "v.1", 1, PPC_OPERAND_VR },
600 { "v.10", 10, PPC_OPERAND_VR },
601 { "v.11", 11, PPC_OPERAND_VR },
602 { "v.12", 12, PPC_OPERAND_VR },
603 { "v.13", 13, PPC_OPERAND_VR },
604 { "v.14", 14, PPC_OPERAND_VR },
605 { "v.15", 15, PPC_OPERAND_VR },
606 { "v.16", 16, PPC_OPERAND_VR },
607 { "v.17", 17, PPC_OPERAND_VR },
608 { "v.18", 18, PPC_OPERAND_VR },
609 { "v.19", 19, PPC_OPERAND_VR },
610 { "v.2", 2, PPC_OPERAND_VR },
611 { "v.20", 20, PPC_OPERAND_VR },
612 { "v.21", 21, PPC_OPERAND_VR },
613 { "v.22", 22, PPC_OPERAND_VR },
614 { "v.23", 23, PPC_OPERAND_VR },
615 { "v.24", 24, PPC_OPERAND_VR },
616 { "v.25", 25, PPC_OPERAND_VR },
617 { "v.26", 26, PPC_OPERAND_VR },
618 { "v.27", 27, PPC_OPERAND_VR },
619 { "v.28", 28, PPC_OPERAND_VR },
620 { "v.29", 29, PPC_OPERAND_VR },
621 { "v.3", 3, PPC_OPERAND_VR },
622 { "v.30", 30, PPC_OPERAND_VR },
623 { "v.31", 31, PPC_OPERAND_VR },
624 { "v.4", 4, PPC_OPERAND_VR },
625 { "v.5", 5, PPC_OPERAND_VR },
626 { "v.6", 6, PPC_OPERAND_VR },
627 { "v.7", 7, PPC_OPERAND_VR },
628 { "v.8", 8, PPC_OPERAND_VR },
629 { "v.9", 9, PPC_OPERAND_VR },
630
631 { "v0", 0, PPC_OPERAND_VR },
632 { "v1", 1, PPC_OPERAND_VR },
633 { "v10", 10, PPC_OPERAND_VR },
634 { "v11", 11, PPC_OPERAND_VR },
635 { "v12", 12, PPC_OPERAND_VR },
636 { "v13", 13, PPC_OPERAND_VR },
637 { "v14", 14, PPC_OPERAND_VR },
638 { "v15", 15, PPC_OPERAND_VR },
639 { "v16", 16, PPC_OPERAND_VR },
640 { "v17", 17, PPC_OPERAND_VR },
641 { "v18", 18, PPC_OPERAND_VR },
642 { "v19", 19, PPC_OPERAND_VR },
643 { "v2", 2, PPC_OPERAND_VR },
644 { "v20", 20, PPC_OPERAND_VR },
645 { "v21", 21, PPC_OPERAND_VR },
646 { "v22", 22, PPC_OPERAND_VR },
647 { "v23", 23, PPC_OPERAND_VR },
648 { "v24", 24, PPC_OPERAND_VR },
649 { "v25", 25, PPC_OPERAND_VR },
650 { "v26", 26, PPC_OPERAND_VR },
651 { "v27", 27, PPC_OPERAND_VR },
652 { "v28", 28, PPC_OPERAND_VR },
653 { "v29", 29, PPC_OPERAND_VR },
654 { "v3", 3, PPC_OPERAND_VR },
655 { "v30", 30, PPC_OPERAND_VR },
656 { "v31", 31, PPC_OPERAND_VR },
657 { "v4", 4, PPC_OPERAND_VR },
658 { "v5", 5, PPC_OPERAND_VR },
659 { "v6", 6, PPC_OPERAND_VR },
660 { "v7", 7, PPC_OPERAND_VR },
661 { "v8", 8, PPC_OPERAND_VR },
662 { "v9", 9, PPC_OPERAND_VR },
663
664 /* Vector Scalar (VSX) registers (ISA 2.06). */
665 { "vs.0", 0, PPC_OPERAND_VSR },
666 { "vs.1", 1, PPC_OPERAND_VSR },
667 { "vs.10", 10, PPC_OPERAND_VSR },
668 { "vs.11", 11, PPC_OPERAND_VSR },
669 { "vs.12", 12, PPC_OPERAND_VSR },
670 { "vs.13", 13, PPC_OPERAND_VSR },
671 { "vs.14", 14, PPC_OPERAND_VSR },
672 { "vs.15", 15, PPC_OPERAND_VSR },
673 { "vs.16", 16, PPC_OPERAND_VSR },
674 { "vs.17", 17, PPC_OPERAND_VSR },
675 { "vs.18", 18, PPC_OPERAND_VSR },
676 { "vs.19", 19, PPC_OPERAND_VSR },
677 { "vs.2", 2, PPC_OPERAND_VSR },
678 { "vs.20", 20, PPC_OPERAND_VSR },
679 { "vs.21", 21, PPC_OPERAND_VSR },
680 { "vs.22", 22, PPC_OPERAND_VSR },
681 { "vs.23", 23, PPC_OPERAND_VSR },
682 { "vs.24", 24, PPC_OPERAND_VSR },
683 { "vs.25", 25, PPC_OPERAND_VSR },
684 { "vs.26", 26, PPC_OPERAND_VSR },
685 { "vs.27", 27, PPC_OPERAND_VSR },
686 { "vs.28", 28, PPC_OPERAND_VSR },
687 { "vs.29", 29, PPC_OPERAND_VSR },
688 { "vs.3", 3, PPC_OPERAND_VSR },
689 { "vs.30", 30, PPC_OPERAND_VSR },
690 { "vs.31", 31, PPC_OPERAND_VSR },
691 { "vs.32", 32, PPC_OPERAND_VSR },
692 { "vs.33", 33, PPC_OPERAND_VSR },
693 { "vs.34", 34, PPC_OPERAND_VSR },
694 { "vs.35", 35, PPC_OPERAND_VSR },
695 { "vs.36", 36, PPC_OPERAND_VSR },
696 { "vs.37", 37, PPC_OPERAND_VSR },
697 { "vs.38", 38, PPC_OPERAND_VSR },
698 { "vs.39", 39, PPC_OPERAND_VSR },
699 { "vs.4", 4, PPC_OPERAND_VSR },
700 { "vs.40", 40, PPC_OPERAND_VSR },
701 { "vs.41", 41, PPC_OPERAND_VSR },
702 { "vs.42", 42, PPC_OPERAND_VSR },
703 { "vs.43", 43, PPC_OPERAND_VSR },
704 { "vs.44", 44, PPC_OPERAND_VSR },
705 { "vs.45", 45, PPC_OPERAND_VSR },
706 { "vs.46", 46, PPC_OPERAND_VSR },
707 { "vs.47", 47, PPC_OPERAND_VSR },
708 { "vs.48", 48, PPC_OPERAND_VSR },
709 { "vs.49", 49, PPC_OPERAND_VSR },
710 { "vs.5", 5, PPC_OPERAND_VSR },
711 { "vs.50", 50, PPC_OPERAND_VSR },
712 { "vs.51", 51, PPC_OPERAND_VSR },
713 { "vs.52", 52, PPC_OPERAND_VSR },
714 { "vs.53", 53, PPC_OPERAND_VSR },
715 { "vs.54", 54, PPC_OPERAND_VSR },
716 { "vs.55", 55, PPC_OPERAND_VSR },
717 { "vs.56", 56, PPC_OPERAND_VSR },
718 { "vs.57", 57, PPC_OPERAND_VSR },
719 { "vs.58", 58, PPC_OPERAND_VSR },
720 { "vs.59", 59, PPC_OPERAND_VSR },
721 { "vs.6", 6, PPC_OPERAND_VSR },
722 { "vs.60", 60, PPC_OPERAND_VSR },
723 { "vs.61", 61, PPC_OPERAND_VSR },
724 { "vs.62", 62, PPC_OPERAND_VSR },
725 { "vs.63", 63, PPC_OPERAND_VSR },
726 { "vs.7", 7, PPC_OPERAND_VSR },
727 { "vs.8", 8, PPC_OPERAND_VSR },
728 { "vs.9", 9, PPC_OPERAND_VSR },
729
730 { "vs0", 0, PPC_OPERAND_VSR },
731 { "vs1", 1, PPC_OPERAND_VSR },
732 { "vs10", 10, PPC_OPERAND_VSR },
733 { "vs11", 11, PPC_OPERAND_VSR },
734 { "vs12", 12, PPC_OPERAND_VSR },
735 { "vs13", 13, PPC_OPERAND_VSR },
736 { "vs14", 14, PPC_OPERAND_VSR },
737 { "vs15", 15, PPC_OPERAND_VSR },
738 { "vs16", 16, PPC_OPERAND_VSR },
739 { "vs17", 17, PPC_OPERAND_VSR },
740 { "vs18", 18, PPC_OPERAND_VSR },
741 { "vs19", 19, PPC_OPERAND_VSR },
742 { "vs2", 2, PPC_OPERAND_VSR },
743 { "vs20", 20, PPC_OPERAND_VSR },
744 { "vs21", 21, PPC_OPERAND_VSR },
745 { "vs22", 22, PPC_OPERAND_VSR },
746 { "vs23", 23, PPC_OPERAND_VSR },
747 { "vs24", 24, PPC_OPERAND_VSR },
748 { "vs25", 25, PPC_OPERAND_VSR },
749 { "vs26", 26, PPC_OPERAND_VSR },
750 { "vs27", 27, PPC_OPERAND_VSR },
751 { "vs28", 28, PPC_OPERAND_VSR },
752 { "vs29", 29, PPC_OPERAND_VSR },
753 { "vs3", 3, PPC_OPERAND_VSR },
754 { "vs30", 30, PPC_OPERAND_VSR },
755 { "vs31", 31, PPC_OPERAND_VSR },
756 { "vs32", 32, PPC_OPERAND_VSR },
757 { "vs33", 33, PPC_OPERAND_VSR },
758 { "vs34", 34, PPC_OPERAND_VSR },
759 { "vs35", 35, PPC_OPERAND_VSR },
760 { "vs36", 36, PPC_OPERAND_VSR },
761 { "vs37", 37, PPC_OPERAND_VSR },
762 { "vs38", 38, PPC_OPERAND_VSR },
763 { "vs39", 39, PPC_OPERAND_VSR },
764 { "vs4", 4, PPC_OPERAND_VSR },
765 { "vs40", 40, PPC_OPERAND_VSR },
766 { "vs41", 41, PPC_OPERAND_VSR },
767 { "vs42", 42, PPC_OPERAND_VSR },
768 { "vs43", 43, PPC_OPERAND_VSR },
769 { "vs44", 44, PPC_OPERAND_VSR },
770 { "vs45", 45, PPC_OPERAND_VSR },
771 { "vs46", 46, PPC_OPERAND_VSR },
772 { "vs47", 47, PPC_OPERAND_VSR },
773 { "vs48", 48, PPC_OPERAND_VSR },
774 { "vs49", 49, PPC_OPERAND_VSR },
775 { "vs5", 5, PPC_OPERAND_VSR },
776 { "vs50", 50, PPC_OPERAND_VSR },
777 { "vs51", 51, PPC_OPERAND_VSR },
778 { "vs52", 52, PPC_OPERAND_VSR },
779 { "vs53", 53, PPC_OPERAND_VSR },
780 { "vs54", 54, PPC_OPERAND_VSR },
781 { "vs55", 55, PPC_OPERAND_VSR },
782 { "vs56", 56, PPC_OPERAND_VSR },
783 { "vs57", 57, PPC_OPERAND_VSR },
784 { "vs58", 58, PPC_OPERAND_VSR },
785 { "vs59", 59, PPC_OPERAND_VSR },
786 { "vs6", 6, PPC_OPERAND_VSR },
787 { "vs60", 60, PPC_OPERAND_VSR },
788 { "vs61", 61, PPC_OPERAND_VSR },
789 { "vs62", 62, PPC_OPERAND_VSR },
790 { "vs63", 63, PPC_OPERAND_VSR },
791 { "vs7", 7, PPC_OPERAND_VSR },
792 { "vs8", 8, PPC_OPERAND_VSR },
793 { "vs9", 9, PPC_OPERAND_VSR },
794
795 { "xer", 1, PPC_OPERAND_SPR }
796 };
797
798 /* Given NAME, find the register number associated with that name, return
799 the integer value associated with the given name or -1 on failure. */
800
801 static const struct pd_reg *
reg_name_search(const struct pd_reg * regs,int regcount,const char * name)802 reg_name_search (const struct pd_reg *regs, int regcount, const char *name)
803 {
804 int middle, low, high;
805 int cmp;
806
807 low = 0;
808 high = regcount - 1;
809
810 do
811 {
812 middle = (low + high) / 2;
813 cmp = strcasecmp (name, regs[middle].name);
814 if (cmp < 0)
815 high = middle - 1;
816 else if (cmp > 0)
817 low = middle + 1;
818 else
819 return ®s[middle];
820 }
821 while (low <= high);
822
823 return NULL;
824 }
825
826 /* Called for a non-symbol, non-number operand. Handles %reg. */
827
828 void
md_operand(expressionS * expressionP)829 md_operand (expressionS *expressionP)
830 {
831 const struct pd_reg *reg;
832 char *name;
833 char *start;
834 char c;
835
836 if (input_line_pointer[0] != '%' || !ISALPHA (input_line_pointer[1]))
837 return;
838
839 start = input_line_pointer;
840 ++input_line_pointer;
841
842 c = get_symbol_name (&name);
843 reg = reg_name_search (pre_defined_registers,
844 ARRAY_SIZE (pre_defined_registers), name);
845 *input_line_pointer = c;
846
847 if (reg != NULL)
848 {
849 expressionP->X_op = O_register;
850 expressionP->X_add_number = reg->value;
851 expressionP->X_md = reg->flags;
852 }
853 else
854 input_line_pointer = start;
855 }
856
857 /* Whether to do the special parsing. */
858 static bool cr_operand;
859
860 /* Extra names to recognise in a condition code. This table is sorted. */
861 static const struct pd_reg cr_cond[] =
862 {
863 { "eq", 2, PPC_OPERAND_CR_BIT },
864 { "gt", 1, PPC_OPERAND_CR_BIT },
865 { "lt", 0, PPC_OPERAND_CR_BIT },
866 { "so", 3, PPC_OPERAND_CR_BIT },
867 { "un", 3, PPC_OPERAND_CR_BIT }
868 };
869
870 /* This function is called for each symbol seen in an expression. It
871 handles the special parsing which PowerPC assemblers are supposed
872 to use for condition codes, and recognises other registers when
873 -mregnames. */
874
875 void
ppc_parse_name(const char * name,expressionS * exp,enum expr_mode mode)876 ppc_parse_name (const char *name, expressionS *exp, enum expr_mode mode)
877 {
878 const struct pd_reg *reg = NULL;
879
880 if (cr_operand)
881 reg = reg_name_search (cr_cond, ARRAY_SIZE (cr_cond), name);
882 if (reg == NULL && (cr_operand || reg_names_p))
883 reg = reg_name_search (pre_defined_registers,
884 ARRAY_SIZE (pre_defined_registers), name);
885 if (reg != NULL)
886 {
887 exp->X_op = O_register;
888 exp->X_add_number = reg->value;
889 exp->X_md = reg->flags;
890 return;
891 }
892
893 /* The following replaces code in expr.c operand() after the
894 md_parse_name call. There is too much difference between targets
895 in the way X_md is used to move this code into expr.c. If you
896 do, you'll get failures on x86 due to uninitialised X_md fields,
897 failures on alpha and other targets due to creating register
898 symbols as O_constant rather than O_register, and failures on arc
899 and others due to expecting expr() to leave X_md alone. */
900 symbolS *sym = symbol_find_or_make (name);
901
902 /* If we have an absolute symbol or a reg, then we know its value
903 now. Copy the symbol value expression to propagate X_md. */
904 bool done = false;
905 if (mode != expr_defer
906 && !S_FORCE_RELOC (sym, 0))
907 {
908 segT segment = S_GET_SEGMENT (sym);
909 if (segment == absolute_section || segment == reg_section)
910 {
911 resolve_symbol_value (sym);
912 *exp = *symbol_get_value_expression (sym);
913 done = true;
914 }
915 }
916 if (!done)
917 {
918 exp->X_op = O_symbol;
919 exp->X_add_symbol = sym;
920 exp->X_add_number = 0;
921 }
922 }
923
924 /* Propagate X_md and check register expressions. This is to support
925 condition codes like 4*cr5+eq. */
926
927 int
ppc_optimize_expr(expressionS * left,operatorT op,expressionS * right)928 ppc_optimize_expr (expressionS *left, operatorT op, expressionS *right)
929 {
930 /* Accept 4*cr<n> and cr<n>*4. */
931 if (op == O_multiply
932 && ((right->X_op == O_register
933 && right->X_md == PPC_OPERAND_CR_REG
934 && left->X_op == O_constant
935 && left->X_add_number == 4)
936 || (left->X_op == O_register
937 && left->X_md == PPC_OPERAND_CR_REG
938 && right->X_op == O_constant
939 && right->X_add_number == 4)))
940 {
941 left->X_op = O_register;
942 left->X_md = PPC_OPERAND_CR_REG | PPC_OPERAND_CR_BIT;
943 left->X_add_number *= right->X_add_number;
944 return 1;
945 }
946
947 /* Accept the above plus <cr bit>, and <cr bit> plus the above. */
948 if (op == O_add
949 && left->X_op == O_register
950 && right->X_op == O_register
951 && ((right->X_md == PPC_OPERAND_CR_BIT
952 && left->X_md == (PPC_OPERAND_CR_REG | PPC_OPERAND_CR_BIT))
953 || (right->X_md == (PPC_OPERAND_CR_REG | PPC_OPERAND_CR_BIT)
954 && left->X_md == PPC_OPERAND_CR_BIT)))
955 {
956 left->X_md = PPC_OPERAND_CR_BIT;
957 right->X_op = O_constant;
958 return 0;
959 }
960
961 /* Accept reg +/- constant. */
962 if (left && left->X_op == O_register
963 && !((op == O_add || op == O_subtract) && right->X_op == O_constant))
964 as_warn (_("invalid register expression"));
965
966 /* Accept constant + reg. */
967 if (right->X_op == O_register)
968 {
969 if (op == O_add && left->X_op == O_constant)
970 left->X_md = right->X_md;
971 else
972 as_warn (_("invalid register expression"));
973 }
974
975 return 0;
976 }
977
978 /* Local variables. */
979
980 /* Whether to target xcoff64/elf64. */
981 static unsigned int ppc_obj64 = BFD_DEFAULT_TARGET_SIZE == 64;
982
983 /* A separate obstack for use by ppc_hash, so that we can quickly
984 throw away hash table memory . */
985 struct obstack insn_obstack;
986
987 /* Opcode hash table. */
988 static htab_t ppc_hash;
989
990 #ifdef OBJ_ELF
991 /* What type of shared library support to use. */
992 static enum { SHLIB_NONE, SHLIB_PIC, SHLIB_MRELOCATABLE } shlib = SHLIB_NONE;
993
994 /* Flags to set in the elf header. */
995 static flagword ppc_flags = 0;
996
997 /* Whether this is Solaris or not. */
998 #ifdef TARGET_SOLARIS_COMMENT
999 #define SOLARIS_P true
1000 #else
1001 #define SOLARIS_P false
1002 #endif
1003
1004 static bool msolaris = SOLARIS_P;
1005 #endif
1006
1007 #ifdef OBJ_XCOFF
1008
1009 /* The RS/6000 assembler uses the .csect pseudo-op to generate code
1010 using a bunch of different sections. These assembler sections,
1011 however, are all encompassed within the .text, .data or .bss sections
1012 of the final output file. We handle this by using different
1013 subsegments within these main segments.
1014 .tdata and .tbss sections only have one type of csects for now,
1015 but it's better to follow the same construction like the others. */
1016
1017 struct ppc_xcoff_section ppc_xcoff_text_section;
1018 struct ppc_xcoff_section ppc_xcoff_data_section;
1019 struct ppc_xcoff_section ppc_xcoff_bss_section;
1020 struct ppc_xcoff_section ppc_xcoff_tdata_section;
1021 struct ppc_xcoff_section ppc_xcoff_tbss_section;
1022
1023 /* Return true if the ppc_xcoff_section structure is already
1024 initialized. */
1025 static bool
ppc_xcoff_section_is_initialized(struct ppc_xcoff_section * section)1026 ppc_xcoff_section_is_initialized (struct ppc_xcoff_section *section)
1027 {
1028 return section->segment != NULL;
1029 }
1030
1031 /* Initialize a ppc_xcoff_section.
1032 Dummy symbols are used to ensure the position of .text over .data
1033 and .tdata. Moreover, they allow all algorithms here to be sure that
1034 csects isn't NULL. These symbols won't be output. */
1035 static void
ppc_init_xcoff_section(struct ppc_xcoff_section * s,segT seg)1036 ppc_init_xcoff_section (struct ppc_xcoff_section *s, segT seg)
1037 {
1038 s->segment = seg;
1039 s->next_subsegment = 2;
1040 s->csects = symbol_make ("dummy\001");
1041 symbol_get_tc (s->csects)->within = s->csects;
1042 }
1043
1044 /* The current csect. */
1045 static symbolS *ppc_current_csect;
1046
1047 /* The RS/6000 assembler uses a TOC which holds addresses of functions
1048 and variables. Symbols are put in the TOC with the .tc pseudo-op.
1049 A special relocation is used when accessing TOC entries. We handle
1050 the TOC as a subsegment within the .data segment. We set it up if
1051 we see a .toc pseudo-op, and save the csect symbol here. */
1052 static symbolS *ppc_toc_csect;
1053
1054 /* The first frag in the TOC subsegment. */
1055 static fragS *ppc_toc_frag;
1056
1057 /* The first frag in the first subsegment after the TOC in the .data
1058 segment. NULL if there are no subsegments after the TOC. */
1059 static fragS *ppc_after_toc_frag;
1060
1061 /* The current static block. */
1062 static symbolS *ppc_current_block;
1063
1064 /* The COFF debugging section; set by md_begin. This is not the
1065 .debug section, but is instead the secret BFD section which will
1066 cause BFD to set the section number of a symbol to N_DEBUG. */
1067 static asection *ppc_coff_debug_section;
1068
1069 /* Structure to set the length field of the dwarf sections. */
1070 struct dw_subsection {
1071 /* Subsections are simply linked. */
1072 struct dw_subsection *link;
1073
1074 /* The subsection number. */
1075 subsegT subseg;
1076
1077 /* Expression to compute the length of the section. */
1078 expressionS end_exp;
1079 };
1080
1081 static struct dw_section {
1082 /* Corresponding section. */
1083 segT sect;
1084
1085 /* Simply linked list of subsections with a label. */
1086 struct dw_subsection *list_subseg;
1087
1088 /* The anonymous subsection. */
1089 struct dw_subsection *anon_subseg;
1090 } dw_sections[XCOFF_DWSECT_NBR_NAMES];
1091 #endif /* OBJ_XCOFF */
1092
1093 #ifdef OBJ_ELF
1094 symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE" */
1095 unsigned long *ppc_apuinfo_list;
1096 unsigned int ppc_apuinfo_num;
1097 unsigned int ppc_apuinfo_num_alloc;
1098 #endif /* OBJ_ELF */
1099
1100 #ifdef OBJ_ELF
1101 const char *const md_shortopts = "b:l:usm:K:VQ:";
1102 #else
1103 const char *const md_shortopts = "um:";
1104 #endif
1105 #define OPTION_NOPS (OPTION_MD_BASE + 0)
1106 const struct option md_longopts[] = {
1107 {"nops", required_argument, NULL, OPTION_NOPS},
1108 {"ppc476-workaround", no_argument, &warn_476, 1},
1109 {"no-ppc476-workaround", no_argument, &warn_476, 0},
1110 {NULL, no_argument, NULL, 0}
1111 };
1112 const size_t md_longopts_size = sizeof (md_longopts);
1113
1114 int
md_parse_option(int c,const char * arg)1115 md_parse_option (int c, const char *arg)
1116 {
1117 ppc_cpu_t new_cpu;
1118
1119 switch (c)
1120 {
1121 case 'u':
1122 /* -u means that any undefined symbols should be treated as
1123 external, which is the default for gas anyhow. */
1124 break;
1125
1126 #ifdef OBJ_ELF
1127 case 'l':
1128 /* Solaris as takes -le (presumably for little endian). For completeness
1129 sake, recognize -be also. */
1130 if (strcmp (arg, "e") == 0)
1131 {
1132 target_big_endian = 0;
1133 set_target_endian = 1;
1134 if (ppc_cpu & PPC_OPCODE_VLE)
1135 as_bad (_("the use of -mvle requires big endian."));
1136 }
1137 else
1138 return 0;
1139
1140 break;
1141
1142 case 'b':
1143 if (strcmp (arg, "e") == 0)
1144 {
1145 target_big_endian = 1;
1146 set_target_endian = 1;
1147 }
1148 else
1149 return 0;
1150
1151 break;
1152
1153 case 'K':
1154 /* Recognize -K PIC. */
1155 if (strcmp (arg, "PIC") == 0 || strcmp (arg, "pic") == 0)
1156 {
1157 shlib = SHLIB_PIC;
1158 ppc_flags |= EF_PPC_RELOCATABLE_LIB;
1159 }
1160 else
1161 return 0;
1162
1163 break;
1164 #endif
1165
1166 /* a64 and a32 determine whether to use XCOFF64 or XCOFF32. */
1167 case 'a':
1168 if (strcmp (arg, "64") == 0)
1169 {
1170 #ifdef BFD64
1171 ppc_obj64 = 1;
1172 if (ppc_cpu & PPC_OPCODE_VLE)
1173 as_bad (_("the use of -mvle requires -a32."));
1174 #else
1175 as_fatal (_("%s unsupported"), "-a64");
1176 #endif
1177 }
1178 else if (strcmp (arg, "32") == 0)
1179 ppc_obj64 = 0;
1180 else
1181 return 0;
1182 break;
1183
1184 case 'm':
1185 new_cpu = ppc_parse_cpu (ppc_cpu, &sticky, arg);
1186 /* "raw" is only valid for the disassembler. */
1187 if (new_cpu != 0 && (new_cpu & PPC_OPCODE_RAW) == 0)
1188 {
1189 ppc_cpu = new_cpu;
1190 if (strcmp (arg, "vle") == 0)
1191 {
1192 if (set_target_endian && target_big_endian == 0)
1193 as_bad (_("the use of -mvle requires big endian."));
1194 if (ppc_obj64)
1195 as_bad (_("the use of -mvle requires -a32."));
1196 }
1197 }
1198
1199 else if (strcmp (arg, "no-vle") == 0)
1200 {
1201 sticky &= ~PPC_OPCODE_VLE;
1202
1203 new_cpu = ppc_parse_cpu (ppc_cpu, &sticky, "booke");
1204 new_cpu &= ~PPC_OPCODE_VLE;
1205
1206 ppc_cpu = new_cpu;
1207 }
1208
1209 else if (strcmp (arg, "regnames") == 0)
1210 reg_names_p = true;
1211
1212 else if (strcmp (arg, "no-regnames") == 0)
1213 reg_names_p = false;
1214
1215 #ifdef OBJ_ELF
1216 /* -mrelocatable/-mrelocatable-lib -- warn about initializations
1217 that require relocation. */
1218 else if (strcmp (arg, "relocatable") == 0)
1219 {
1220 shlib = SHLIB_MRELOCATABLE;
1221 ppc_flags |= EF_PPC_RELOCATABLE;
1222 }
1223
1224 else if (strcmp (arg, "relocatable-lib") == 0)
1225 {
1226 shlib = SHLIB_MRELOCATABLE;
1227 ppc_flags |= EF_PPC_RELOCATABLE_LIB;
1228 }
1229
1230 /* -memb, set embedded bit. */
1231 else if (strcmp (arg, "emb") == 0)
1232 ppc_flags |= EF_PPC_EMB;
1233
1234 /* -mlittle/-mbig set the endianness. */
1235 else if (strcmp (arg, "little") == 0
1236 || strcmp (arg, "little-endian") == 0)
1237 {
1238 target_big_endian = 0;
1239 set_target_endian = 1;
1240 if (ppc_cpu & PPC_OPCODE_VLE)
1241 as_bad (_("the use of -mvle requires big endian."));
1242 }
1243
1244 else if (strcmp (arg, "big") == 0 || strcmp (arg, "big-endian") == 0)
1245 {
1246 target_big_endian = 1;
1247 set_target_endian = 1;
1248 }
1249
1250 else if (strcmp (arg, "solaris") == 0)
1251 {
1252 msolaris = true;
1253 ppc_comment_chars = ppc_solaris_comment_chars;
1254 }
1255
1256 else if (strcmp (arg, "no-solaris") == 0)
1257 {
1258 msolaris = false;
1259 ppc_comment_chars = ppc_eabi_comment_chars;
1260 }
1261 else if (strcmp (arg, "spe2") == 0)
1262 {
1263 ppc_cpu |= PPC_OPCODE_SPE2;
1264 }
1265 #endif
1266 else
1267 {
1268 as_bad (_("invalid switch -m%s"), arg);
1269 return 0;
1270 }
1271 break;
1272
1273 #ifdef OBJ_ELF
1274 /* -V: SVR4 argument to print version ID. */
1275 case 'V':
1276 print_version_id ();
1277 break;
1278
1279 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
1280 should be emitted or not. FIXME: Not implemented. */
1281 case 'Q':
1282 break;
1283
1284 /* Solaris takes -s to specify that .stabs go in a .stabs section,
1285 rather than .stabs.excl, which is ignored by the linker.
1286 FIXME: Not implemented. */
1287 case 's':
1288 if (arg)
1289 return 0;
1290
1291 break;
1292 #endif
1293
1294 case OPTION_NOPS:
1295 {
1296 char *end;
1297 nop_limit = strtoul (optarg, &end, 0);
1298 if (*end)
1299 as_bad (_("--nops needs a numeric argument"));
1300 }
1301 break;
1302
1303 case 0:
1304 break;
1305
1306 default:
1307 return 0;
1308 }
1309
1310 return 1;
1311 }
1312
1313 static int
is_ppc64_target(const bfd_target * targ,void * data ATTRIBUTE_UNUSED)1314 is_ppc64_target (const bfd_target *targ, void *data ATTRIBUTE_UNUSED)
1315 {
1316 switch (targ->flavour)
1317 {
1318 #ifdef OBJ_ELF
1319 case bfd_target_elf_flavour:
1320 return startswith (targ->name, "elf64-powerpc");
1321 #endif
1322 #ifdef OBJ_XCOFF
1323 case bfd_target_xcoff_flavour:
1324 return (strcmp (targ->name, "aixcoff64-rs6000") == 0
1325 || strcmp (targ->name, "aix5coff64-rs6000") == 0);
1326 #endif
1327 default:
1328 return 0;
1329 }
1330 }
1331
1332 void
md_show_usage(FILE * stream)1333 md_show_usage (FILE *stream)
1334 {
1335 fprintf (stream, _("\
1336 PowerPC options:\n"));
1337 fprintf (stream, _("\
1338 -a32 generate ELF32/XCOFF32\n"));
1339 if (bfd_iterate_over_targets (is_ppc64_target, NULL))
1340 fprintf (stream, _("\
1341 -a64 generate ELF64/XCOFF64\n"));
1342 fprintf (stream, _("\
1343 -u ignored\n"));
1344 fprintf (stream, _("\
1345 -mpwrx, -mpwr2 generate code for POWER/2 (RIOS2)\n"));
1346 fprintf (stream, _("\
1347 -mpwr generate code for POWER (RIOS1)\n"));
1348 fprintf (stream, _("\
1349 -m601 generate code for PowerPC 601\n"));
1350 fprintf (stream, _("\
1351 -mppc, -mppc32, -m603, -m604\n\
1352 generate code for PowerPC 603/604\n"));
1353 fprintf (stream, _("\
1354 -m403 generate code for PowerPC 403\n"));
1355 fprintf (stream, _("\
1356 -m405 generate code for PowerPC 405\n"));
1357 fprintf (stream, _("\
1358 -m440 generate code for PowerPC 440\n"));
1359 fprintf (stream, _("\
1360 -m464 generate code for PowerPC 464\n"));
1361 fprintf (stream, _("\
1362 -m476 generate code for PowerPC 476\n"));
1363 fprintf (stream, _("\
1364 -m7400, -m7410, -m7450, -m7455\n\
1365 generate code for PowerPC 7400/7410/7450/7455\n"));
1366 fprintf (stream, _("\
1367 -m750cl, -mgekko, -mbroadway\n\
1368 generate code for PowerPC 750cl/Gekko/Broadway\n"));
1369 fprintf (stream, _("\
1370 -m821, -m850, -m860 generate code for PowerPC 821/850/860\n"));
1371 fprintf (stream, _("\
1372 -mppc64, -m620 generate code for PowerPC 620/625/630\n"));
1373 fprintf (stream, _("\
1374 -mppc64bridge generate code for PowerPC 64, including bridge insns\n"));
1375 fprintf (stream, _("\
1376 -mbooke generate code for 32-bit PowerPC BookE\n"));
1377 fprintf (stream, _("\
1378 -ma2 generate code for A2 architecture\n"));
1379 fprintf (stream, _("\
1380 -mpower4, -mpwr4 generate code for Power4 architecture\n"));
1381 fprintf (stream, _("\
1382 -mpower5, -mpwr5, -mpwr5x\n\
1383 generate code for Power5 architecture\n"));
1384 fprintf (stream, _("\
1385 -mpower6, -mpwr6 generate code for Power6 architecture\n"));
1386 fprintf (stream, _("\
1387 -mpower7, -mpwr7 generate code for Power7 architecture\n"));
1388 fprintf (stream, _("\
1389 -mpower8, -mpwr8 generate code for Power8 architecture\n"));
1390 fprintf (stream, _("\
1391 -mpower9, -mpwr9 generate code for Power9 architecture\n"));
1392 fprintf (stream, _("\
1393 -mpower10, -mpwr10 generate code for Power10 architecture\n"));
1394 fprintf (stream, _("\
1395 -mlibresoc generate code for Libre-SOC architecture\n"));
1396 fprintf (stream, _("\
1397 -mfuture generate code for 'future' architecture\n"));
1398 fprintf (stream, _("\
1399 -mcell generate code for Cell Broadband Engine architecture\n"));
1400 fprintf (stream, _("\
1401 -mcom generate code for Power/PowerPC common instructions\n"));
1402 fprintf (stream, _("\
1403 -many generate code for any architecture (PWR/PWRX/PPC)\n"));
1404 fprintf (stream, _("\
1405 -maltivec generate code for AltiVec\n"));
1406 fprintf (stream, _("\
1407 -mvsx generate code for Vector-Scalar (VSX) instructions\n"));
1408 fprintf (stream, _("\
1409 -me300 generate code for PowerPC e300 family\n"));
1410 fprintf (stream, _("\
1411 -me500, -me500x2 generate code for Motorola e500 core complex\n"));
1412 fprintf (stream, _("\
1413 -me500mc, generate code for Freescale e500mc core complex\n"));
1414 fprintf (stream, _("\
1415 -me500mc64, generate code for Freescale e500mc64 core complex\n"));
1416 fprintf (stream, _("\
1417 -me5500, generate code for Freescale e5500 core complex\n"));
1418 fprintf (stream, _("\
1419 -me6500, generate code for Freescale e6500 core complex\n"));
1420 fprintf (stream, _("\
1421 -mspe generate code for Motorola SPE instructions\n"));
1422 fprintf (stream, _("\
1423 -mspe2 generate code for Freescale SPE2 instructions\n"));
1424 fprintf (stream, _("\
1425 -mvle generate code for Freescale VLE instructions\n"));
1426 fprintf (stream, _("\
1427 -mtitan generate code for AppliedMicro Titan core complex\n"));
1428 fprintf (stream, _("\
1429 -mregnames Allow symbolic names for registers\n"));
1430 fprintf (stream, _("\
1431 -mno-regnames Do not allow symbolic names for registers\n"));
1432 #ifdef OBJ_ELF
1433 fprintf (stream, _("\
1434 -mrelocatable support for GCC's -mrelocatble option\n"));
1435 fprintf (stream, _("\
1436 -mrelocatable-lib support for GCC's -mrelocatble-lib option\n"));
1437 fprintf (stream, _("\
1438 -memb set PPC_EMB bit in ELF flags\n"));
1439 fprintf (stream, _("\
1440 -mlittle, -mlittle-endian, -le\n\
1441 generate code for a little endian machine\n"));
1442 fprintf (stream, _("\
1443 -mbig, -mbig-endian, -be\n\
1444 generate code for a big endian machine\n"));
1445 fprintf (stream, _("\
1446 -msolaris generate code for Solaris\n"));
1447 fprintf (stream, _("\
1448 -mno-solaris do not generate code for Solaris\n"));
1449 fprintf (stream, _("\
1450 -K PIC set EF_PPC_RELOCATABLE_LIB in ELF flags\n"));
1451 fprintf (stream, _("\
1452 -V print assembler version number\n"));
1453 fprintf (stream, _("\
1454 -Qy, -Qn ignored\n"));
1455 #endif
1456 fprintf (stream, _("\
1457 -nops=count when aligning, more than COUNT nops uses a branch\n"));
1458 fprintf (stream, _("\
1459 -ppc476-workaround warn if emitting data to code sections\n"));
1460 }
1461
1462 /* Set ppc_cpu if it is not already set. */
1463
1464 static void
ppc_set_cpu(void)1465 ppc_set_cpu (void)
1466 {
1467 const char *default_os = TARGET_OS;
1468 const char *default_cpu = TARGET_CPU;
1469
1470 if ((ppc_cpu & ~(ppc_cpu_t) PPC_OPCODE_ANY) == 0)
1471 {
1472 if (ppc_obj64)
1473 if (target_big_endian)
1474 ppc_cpu |= PPC_OPCODE_PPC | PPC_OPCODE_64;
1475 else
1476 /* The minimum supported cpu for 64-bit little-endian is power8. */
1477 ppc_cpu |= ppc_parse_cpu (ppc_cpu, &sticky, "power8");
1478 else if (startswith (default_os, "aix")
1479 && default_os[3] >= '4' && default_os[3] <= '9')
1480 ppc_cpu |= PPC_OPCODE_COMMON;
1481 else if (startswith (default_os, "aix3"))
1482 ppc_cpu |= PPC_OPCODE_POWER;
1483 else if (strcmp (default_cpu, "rs6000") == 0)
1484 ppc_cpu |= PPC_OPCODE_POWER;
1485 else if (startswith (default_cpu, "powerpc"))
1486 ppc_cpu |= PPC_OPCODE_PPC;
1487 else
1488 as_fatal (_("unknown default cpu = %s, os = %s"),
1489 default_cpu, default_os);
1490 }
1491 }
1492
1493 /* Figure out the BFD architecture to use. This function and ppc_mach
1494 are called well before md_begin, when the output file is opened. */
1495
1496 enum bfd_architecture
ppc_arch(void)1497 ppc_arch (void)
1498 {
1499 ppc_set_cpu ();
1500
1501 #ifdef OBJ_ELF
1502 return bfd_arch_powerpc;
1503 #else
1504 if ((ppc_cpu & PPC_OPCODE_PPC) != 0)
1505 return bfd_arch_powerpc;
1506 if ((ppc_cpu & PPC_OPCODE_VLE) != 0)
1507 return bfd_arch_powerpc;
1508 if ((ppc_cpu & PPC_OPCODE_POWER) != 0)
1509 return bfd_arch_rs6000;
1510 if ((ppc_cpu & (PPC_OPCODE_COMMON | PPC_OPCODE_ANY)) != 0)
1511 {
1512 const char *default_cpu = TARGET_CPU;
1513 if (startswith (default_cpu, "powerpc"))
1514 return bfd_arch_powerpc;
1515 }
1516 return bfd_arch_rs6000;
1517 #endif
1518 }
1519
1520 unsigned long
ppc_mach(void)1521 ppc_mach (void)
1522 {
1523 if (ppc_obj64)
1524 return bfd_mach_ppc64;
1525 else if (ppc_arch () == bfd_arch_rs6000)
1526 return bfd_mach_rs6k;
1527 else if (ppc_cpu & PPC_OPCODE_TITAN)
1528 return bfd_mach_ppc_titan;
1529 else if (ppc_cpu & PPC_OPCODE_VLE)
1530 return bfd_mach_ppc_vle;
1531 else
1532 return bfd_mach_ppc;
1533 }
1534
1535 extern const char*
ppc_target_format(void)1536 ppc_target_format (void)
1537 {
1538 #ifdef OBJ_COFF
1539 #if TE_POWERMAC
1540 return "xcoff-powermac";
1541 #else
1542 # ifdef TE_AIX5
1543 return (ppc_obj64 ? "aix5coff64-rs6000" : "aixcoff-rs6000");
1544 # else
1545 return (ppc_obj64 ? "aixcoff64-rs6000" : "aixcoff-rs6000");
1546 # endif
1547 #endif
1548 #endif
1549 #ifdef OBJ_ELF
1550 # ifdef TE_FreeBSD
1551 return (ppc_obj64 ? "elf64-powerpc-freebsd" : "elf32-powerpc-freebsd");
1552 # elif defined (TE_VXWORKS)
1553 return "elf32-powerpc-vxworks";
1554 # else
1555 return (target_big_endian
1556 ? (ppc_obj64 ? "elf64-powerpc" : "elf32-powerpc")
1557 : (ppc_obj64 ? "elf64-powerpcle" : "elf32-powerpcle"));
1558 # endif
1559 #endif
1560 }
1561
1562 /* Validate one entry in powerpc_opcodes[] or vle_opcodes[].
1563 Return TRUE if there's a problem, otherwise FALSE. */
1564
1565 static bool
insn_validate(const struct powerpc_opcode * op)1566 insn_validate (const struct powerpc_opcode *op)
1567 {
1568 const ppc_opindex_t *o;
1569 uint64_t omask = op->mask;
1570
1571 /* The mask had better not trim off opcode bits. */
1572 if ((op->opcode & omask) != op->opcode)
1573 {
1574 as_bad (_("mask trims opcode bits for %s"), op->name);
1575 return true;
1576 }
1577
1578 /* The operands must not overlap the opcode or each other. */
1579 for (o = op->operands; *o; ++o)
1580 {
1581 bool optional = false;
1582 if (*o >= num_powerpc_operands)
1583 {
1584 as_bad (_("operand index error for %s"), op->name);
1585 return true;
1586 }
1587 else
1588 {
1589 uint64_t mask;
1590 const struct powerpc_operand *operand = &powerpc_operands[*o];
1591 if (operand->shift == (int) PPC_OPSHIFT_INV)
1592 {
1593 const char *errmsg;
1594 uint64_t val;
1595
1596 errmsg = NULL;
1597 val = -1;
1598 if ((operand->flags & PPC_OPERAND_NEGATIVE) != 0)
1599 val = -val;
1600 mask = (*operand->insert) (0, val, ppc_cpu, &errmsg);
1601 }
1602 else if (operand->shift == (int) PPC_OPSHIFT_SH6)
1603 mask = (0x1f << 11) | 0x2;
1604 else if (operand->shift >= 0)
1605 mask = operand->bitm << operand->shift;
1606 else
1607 mask = operand->bitm >> -operand->shift;
1608 if (omask & mask)
1609 {
1610 as_bad (_("operand %d overlap in %s"),
1611 (int) (o - op->operands), op->name);
1612 return true;
1613 }
1614 omask |= mask;
1615 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0)
1616 optional = true;
1617 else if (optional)
1618 {
1619 as_bad (_("non-optional operand %d follows optional operand in %s"),
1620 (int) (o - op->operands), op->name);
1621 return true;
1622 }
1623 }
1624 }
1625 return false;
1626 }
1627
1628 static void *
insn_calloc(size_t n,size_t size)1629 insn_calloc (size_t n, size_t size)
1630 {
1631 size_t amt = n * size;
1632 void *ret = obstack_alloc (&insn_obstack, amt);
1633 memset (ret, 0, amt);
1634 return ret;
1635 }
1636
1637 /* Insert opcodes into hash tables. Called at startup and for
1638 .machine pseudo. */
1639
1640 static void
ppc_setup_opcodes(void)1641 ppc_setup_opcodes (void)
1642 {
1643 const struct powerpc_opcode *op;
1644 const struct powerpc_opcode *op_end;
1645 bool bad_insn = false;
1646
1647 if (ppc_hash != NULL)
1648 {
1649 htab_delete (ppc_hash);
1650 _obstack_free (&insn_obstack, NULL);
1651 }
1652
1653 obstack_begin (&insn_obstack, chunksize);
1654
1655 /* Insert the opcodes into a hash table. */
1656 ppc_hash = htab_create_alloc (5000, hash_string_tuple, eq_string_tuple,
1657 NULL, insn_calloc, NULL);
1658
1659 if (ENABLE_CHECKING)
1660 {
1661 unsigned int i;
1662
1663 /* An index into powerpc_operands is stored in struct fix
1664 fx_pcrel_adjust which is a 16 bit field. */
1665 gas_assert (num_powerpc_operands <= PPC_OPINDEX_MAX + 1);
1666
1667 /* Check operand masks. Code here and in the disassembler assumes
1668 all the 1's in the mask are contiguous. */
1669 for (i = 0; i < num_powerpc_operands; ++i)
1670 {
1671 uint64_t mask = powerpc_operands[i].bitm;
1672 unsigned long flags = powerpc_operands[i].flags;
1673 uint64_t right_bit;
1674 unsigned int j;
1675
1676 if ((flags & PPC_OPERAND_PLUS1) != 0
1677 && (flags & PPC_OPERAND_NONZERO) != 0)
1678 as_bad ("mutually exclusive operand flags");
1679
1680 right_bit = mask & -mask;
1681 mask += right_bit;
1682 right_bit = mask & -mask;
1683 if (mask != right_bit)
1684 {
1685 as_bad (_("powerpc_operands[%d].bitm invalid"), i);
1686 bad_insn = true;
1687 }
1688 for (j = i + 1; j < num_powerpc_operands; ++j)
1689 if (memcmp (&powerpc_operands[i], &powerpc_operands[j],
1690 sizeof (powerpc_operands[0])) == 0)
1691 {
1692 as_bad (_("powerpc_operands[%d] duplicates powerpc_operands[%d]"),
1693 j, i);
1694 bad_insn = true;
1695 }
1696 }
1697 }
1698
1699 op_end = powerpc_opcodes + powerpc_num_opcodes;
1700 for (op = powerpc_opcodes; op < op_end; op++)
1701 {
1702 if (ENABLE_CHECKING)
1703 {
1704 unsigned int new_opcode = PPC_OP (op[0].opcode);
1705
1706 #ifdef PRINT_OPCODE_TABLE
1707 printf ("%-14s\t#%04u\tmajor op: 0x%x\top: 0x%llx"
1708 "\tmask: 0x%llx\tflags: 0x%llx\n",
1709 op->name, (unsigned int) (op - powerpc_opcodes),
1710 new_opcode, (unsigned long long) op->opcode,
1711 (unsigned long long) op->mask,
1712 (unsigned long long) op->flags);
1713 #endif
1714
1715 /* The major opcodes had better be sorted. Code in the disassembler
1716 assumes the insns are sorted according to major opcode. */
1717 if (op != powerpc_opcodes
1718 && new_opcode < PPC_OP (op[-1].opcode))
1719 {
1720 as_bad (_("major opcode is not sorted for %s"), op->name);
1721 bad_insn = true;
1722 }
1723
1724 if ((op->flags & PPC_OPCODE_VLE) != 0)
1725 {
1726 as_bad (_("%s is enabled by vle flag"), op->name);
1727 bad_insn = true;
1728 }
1729 if (PPC_OP (op->opcode) != 4
1730 && PPC_OP (op->opcode) != 31
1731 && (op->deprecated & PPC_OPCODE_VLE) == 0)
1732 {
1733 as_bad (_("%s not disabled by vle flag"), op->name);
1734 bad_insn = true;
1735 }
1736 bad_insn |= insn_validate (op);
1737 }
1738
1739 if ((ppc_cpu & op->flags) != 0
1740 && !(ppc_cpu & op->deprecated)
1741 && str_hash_insert (ppc_hash, op->name, op, 0) != NULL)
1742 {
1743 as_bad (_("duplicate %s"), op->name);
1744 bad_insn = true;
1745 }
1746 }
1747
1748 if ((ppc_cpu & PPC_OPCODE_ANY) != 0)
1749 for (op = powerpc_opcodes; op < op_end; op++)
1750 str_hash_insert (ppc_hash, op->name, op, 0);
1751
1752 op_end = prefix_opcodes + prefix_num_opcodes;
1753 for (op = prefix_opcodes; op < op_end; op++)
1754 {
1755 if (ENABLE_CHECKING)
1756 {
1757 unsigned int new_opcode = PPC_PREFIX_SEG (op[0].opcode);
1758
1759 #ifdef PRINT_OPCODE_TABLE
1760 printf ("%-14s\t#%04u\tmajor op/2: 0x%x\top: 0x%llx"
1761 "\tmask: 0x%llx\tflags: 0x%llx\n",
1762 op->name, (unsigned int) (op - prefix_opcodes),
1763 new_opcode, (unsigned long long) op->opcode,
1764 (unsigned long long) op->mask,
1765 (unsigned long long) op->flags);
1766 #endif
1767
1768 /* The major opcodes had better be sorted. Code in the disassembler
1769 assumes the insns are sorted according to major opcode. */
1770 if (op != prefix_opcodes
1771 && new_opcode < PPC_PREFIX_SEG (op[-1].opcode))
1772 {
1773 as_bad (_("major opcode is not sorted for %s"), op->name);
1774 bad_insn = true;
1775 }
1776 bad_insn |= insn_validate (op);
1777 }
1778
1779 if ((ppc_cpu & op->flags) != 0
1780 && !(ppc_cpu & op->deprecated)
1781 && str_hash_insert (ppc_hash, op->name, op, 0) != NULL)
1782 {
1783 as_bad (_("duplicate %s"), op->name);
1784 bad_insn = true;
1785 }
1786 }
1787
1788 if ((ppc_cpu & PPC_OPCODE_ANY) != 0)
1789 for (op = prefix_opcodes; op < op_end; op++)
1790 str_hash_insert (ppc_hash, op->name, op, 0);
1791
1792 if ((ppc_cpu & (PPC_OPCODE_VLE | PPC_OPCODE_ANY)) != 0)
1793 {
1794 unsigned int prev_seg = 0;
1795 unsigned int seg;
1796
1797 op_end = vle_opcodes + vle_num_opcodes;
1798 for (op = vle_opcodes; op < op_end; op++)
1799 {
1800 if (ENABLE_CHECKING)
1801 {
1802 seg = VLE_OP_TO_SEG (VLE_OP (op[0].opcode, op[0].mask));
1803
1804 #ifdef PRINT_OPCODE_TABLE
1805 printf ("%-14s\t#%04u\tmajor op: 0x%x\top: 0x%llx"
1806 "\tmask: 0x%llx\tflags: 0x%llx\n",
1807 op->name, (unsigned int) (op - vle_opcodes),
1808 (unsigned int) seg, (unsigned long long) op->opcode,
1809 (unsigned long long) op->mask,
1810 (unsigned long long) op->flags);
1811 #endif
1812
1813 if (seg < prev_seg)
1814 {
1815 as_bad (_("major opcode is not sorted for %s"), op->name);
1816 bad_insn = true;
1817 }
1818 prev_seg = seg;
1819 bad_insn |= insn_validate (op);
1820 }
1821
1822 str_hash_insert (ppc_hash, op->name, op, 0);
1823 }
1824 }
1825
1826 /* LSP instructions */
1827 if ((ppc_cpu & (PPC_OPCODE_LSP | PPC_OPCODE_ANY)) != 0)
1828 {
1829 unsigned int prev_seg = 0;
1830 unsigned int seg;
1831 op_end = lsp_opcodes + lsp_num_opcodes;
1832 for (op = lsp_opcodes; op < op_end; op++)
1833 {
1834 if (ENABLE_CHECKING)
1835 {
1836 seg = LSP_OP_TO_SEG (op->opcode);
1837 if (seg < prev_seg)
1838 {
1839 as_bad (_("opcode is not sorted for %s"), op->name);
1840 bad_insn = true;
1841 }
1842 prev_seg = seg;
1843 bad_insn |= insn_validate (op);
1844 }
1845
1846 str_hash_insert (ppc_hash, op->name, op, 0);
1847 }
1848 }
1849
1850 /* SPE2 instructions */
1851 if ((ppc_cpu & (PPC_OPCODE_SPE2 | PPC_OPCODE_ANY)) != 0)
1852 {
1853 unsigned int prev_seg = 0;
1854 unsigned int seg;
1855 op_end = spe2_opcodes + spe2_num_opcodes;
1856 for (op = spe2_opcodes; op < op_end; op++)
1857 {
1858 if (ENABLE_CHECKING)
1859 {
1860 seg = VLE_OP_TO_SEG (VLE_OP (op[0].opcode, op[0].mask));
1861 if (seg < prev_seg)
1862 {
1863 as_bad (_("major opcode is not sorted for %s"), op->name);
1864 bad_insn = true;
1865 }
1866 prev_seg = seg;
1867 bad_insn |= insn_validate (op);
1868 }
1869
1870 str_hash_insert (ppc_hash, op->name, op, 0);
1871 }
1872 }
1873
1874 if (bad_insn)
1875 abort ();
1876 }
1877
1878 /* This function is called when the assembler starts up. It is called
1879 after the options have been parsed and the output file has been
1880 opened. */
1881
1882 void
md_begin(void)1883 md_begin (void)
1884 {
1885 ppc_set_cpu ();
1886
1887 ppc_cie_data_alignment = ppc_obj64 ? -8 : -4;
1888 ppc_dwarf2_line_min_insn_length = (ppc_cpu & PPC_OPCODE_VLE) ? 2 : 4;
1889
1890 #ifdef OBJ_ELF
1891 /* Set the ELF flags if desired. */
1892 if (ppc_flags && !msolaris)
1893 bfd_set_private_flags (stdoutput, ppc_flags);
1894 #endif
1895
1896 ppc_setup_opcodes ();
1897
1898 /* Tell the main code what the endianness is if it is not overridden
1899 by the user. */
1900 if (!set_target_endian)
1901 {
1902 set_target_endian = 1;
1903 target_big_endian = PPC_BIG_ENDIAN;
1904 }
1905
1906 #ifdef OBJ_XCOFF
1907 ppc_coff_debug_section = coff_section_from_bfd_index (stdoutput, N_DEBUG);
1908
1909 /* Create XCOFF sections with .text in first, as it's creating dummy symbols
1910 to serve as initial csects. This forces the text csects to precede the
1911 data csects. These symbols will not be output. */
1912 ppc_init_xcoff_section (&ppc_xcoff_text_section, text_section);
1913 ppc_init_xcoff_section (&ppc_xcoff_data_section, data_section);
1914 ppc_init_xcoff_section (&ppc_xcoff_bss_section, bss_section);
1915 #endif
1916 }
1917
1918 void
ppc_md_end(void)1919 ppc_md_end (void)
1920 {
1921 if (ppc_hash)
1922 {
1923 htab_delete (ppc_hash);
1924 _obstack_free (&insn_obstack, NULL);
1925 }
1926 ppc_hash = NULL;
1927 }
1928
1929 void
ppc_cleanup(void)1930 ppc_cleanup (void)
1931 {
1932 #ifdef OBJ_ELF
1933 if (ppc_apuinfo_list == NULL)
1934 return;
1935
1936 /* Ok, so write the section info out. We have this layout:
1937
1938 byte data what
1939 ---- ---- ----
1940 0 8 length of "APUinfo\0"
1941 4 (n*4) number of APU's (4 bytes each)
1942 8 2 note type 2
1943 12 "APUinfo\0" name
1944 20 APU#1 first APU's info
1945 24 APU#2 second APU's info
1946 ... ...
1947 */
1948 {
1949 char *p;
1950 asection *seg = now_seg;
1951 subsegT subseg = now_subseg;
1952 asection *apuinfo_secp = (asection *) NULL;
1953 unsigned int i;
1954
1955 /* Create the .PPC.EMB.apuinfo section. */
1956 apuinfo_secp = subseg_new (APUINFO_SECTION_NAME, 0);
1957 bfd_set_section_flags (apuinfo_secp, SEC_HAS_CONTENTS | SEC_READONLY);
1958
1959 p = frag_more (4);
1960 md_number_to_chars (p, (valueT) 8, 4);
1961
1962 p = frag_more (4);
1963 md_number_to_chars (p, (valueT) ppc_apuinfo_num * 4, 4);
1964
1965 p = frag_more (4);
1966 md_number_to_chars (p, (valueT) 2, 4);
1967
1968 p = frag_more (8);
1969 strcpy (p, APUINFO_LABEL);
1970
1971 for (i = 0; i < ppc_apuinfo_num; i++)
1972 {
1973 p = frag_more (4);
1974 md_number_to_chars (p, (valueT) ppc_apuinfo_list[i], 4);
1975 }
1976
1977 frag_align (2, 0, 0);
1978
1979 /* We probably can't restore the current segment, for there likely
1980 isn't one yet... */
1981 if (seg && subseg)
1982 subseg_set (seg, subseg);
1983 }
1984 #endif
1985 }
1986
1987 /* Insert an operand value into an instruction. */
1988
1989 static uint64_t
ppc_insert_operand(uint64_t insn,const struct powerpc_operand * operand,int64_t val,ppc_cpu_t cpu,const char * file,unsigned int line)1990 ppc_insert_operand (uint64_t insn,
1991 const struct powerpc_operand *operand,
1992 int64_t val,
1993 ppc_cpu_t cpu,
1994 const char *file,
1995 unsigned int line)
1996 {
1997 int64_t min, max, right;
1998
1999 max = operand->bitm;
2000 right = max & -max;
2001 min = 0;
2002
2003 if ((operand->flags & PPC_OPERAND_SIGNOPT) != 0)
2004 {
2005 /* Extend the allowed range for addis to [-32768, 65535].
2006 Similarly for cmpli and some VLE high part insns. For 64-bit
2007 it would be good to disable this for signed fields since the
2008 value is sign extended into the high 32 bits of the register.
2009 If the value is, say, an address, then we might care about
2010 the high bits. However, gcc as of 2014-06 uses unsigned
2011 values when loading the high part of 64-bit constants using
2012 lis. */
2013 min = ~(max >> 1) & -right;
2014 }
2015 else if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
2016 {
2017 max = (max >> 1) & -right;
2018 min = ~max & -right;
2019 }
2020 else if ((operand->flags & PPC_OPERAND_NONZERO) != 0)
2021 {
2022 ++min;
2023 ++max;
2024 }
2025
2026 if ((operand->flags & PPC_OPERAND_PLUS1) != 0)
2027 max++;
2028
2029 if ((operand->flags & PPC_OPERAND_NEGATIVE) != 0)
2030 {
2031 int64_t tmp = min;
2032 min = -max;
2033 max = -tmp;
2034 }
2035
2036 if (min <= max)
2037 {
2038 /* Some people write constants with the sign extension done by
2039 hand but only up to 32 bits. This shouldn't really be valid,
2040 but, to permit this code to assemble on a 64-bit host, we
2041 sign extend the 32-bit value to 64 bits if so doing makes the
2042 value valid. We only do this for operands that are 32-bits or
2043 smaller. */
2044 if (val > max
2045 && (operand->bitm & ~0xffffffffULL) == 0
2046 && (val - (1LL << 32)) >= min
2047 && (val - (1LL << 32)) <= max
2048 && ((val - (1LL << 32)) & (right - 1)) == 0)
2049 val = val - (1LL << 32);
2050
2051 /* Similarly, people write expressions like ~(1<<15), and expect
2052 this to be OK for a 32-bit unsigned value. */
2053 else if (val < min
2054 && (operand->bitm & ~0xffffffffULL) == 0
2055 && (val + (1LL << 32)) >= min
2056 && (val + (1LL << 32)) <= max
2057 && ((val + (1LL << 32)) & (right - 1)) == 0)
2058 val = val + (1LL << 32);
2059
2060 else if (val < min
2061 || val > max
2062 || (val & (right - 1)) != 0)
2063 as_bad_value_out_of_range (_("operand"), val, min, max, file, line);
2064 }
2065
2066 if (operand->insert)
2067 {
2068 const char *errmsg;
2069
2070 errmsg = NULL;
2071 insn = (*operand->insert) (insn, val, cpu, &errmsg);
2072 if (errmsg != (const char *) NULL)
2073 as_bad_where (file, line, "%s", errmsg);
2074 }
2075 else
2076 {
2077 if ((operand->flags & PPC_OPERAND_NONZERO) != 0)
2078 --val;
2079 if (operand->shift >= 0)
2080 insn |= (val & operand->bitm) << operand->shift;
2081 else
2082 insn |= (val & operand->bitm) >> -operand->shift;
2083 }
2084
2085 return insn;
2086 }
2087
2088
2089 #ifdef OBJ_ELF
2090 /* Parse @got, etc. and return the desired relocation. */
2091 static bfd_reloc_code_real_type
ppc_elf_suffix(char ** str_p,expressionS * exp_p)2092 ppc_elf_suffix (char **str_p, expressionS *exp_p)
2093 {
2094 struct map_bfd {
2095 const char *string;
2096 unsigned int length : 8;
2097 unsigned int valid32 : 1;
2098 unsigned int valid64 : 1;
2099 unsigned int reloc;
2100 };
2101
2102 char ident[20];
2103 char *str = *str_p;
2104 char *str2;
2105 int ch;
2106 int len;
2107 const struct map_bfd *ptr;
2108
2109 #define MAP(str, reloc) { str, sizeof (str) - 1, 1, 1, reloc }
2110 #define MAP32(str, reloc) { str, sizeof (str) - 1, 1, 0, reloc }
2111 #define MAP64(str, reloc) { str, sizeof (str) - 1, 0, 1, reloc }
2112
2113 static const struct map_bfd mapping[] = {
2114 MAP ("l", BFD_RELOC_LO16),
2115 MAP ("h", BFD_RELOC_HI16),
2116 MAP ("ha", BFD_RELOC_HI16_S),
2117 MAP ("brtaken", BFD_RELOC_PPC_B16_BRTAKEN),
2118 MAP ("brntaken", BFD_RELOC_PPC_B16_BRNTAKEN),
2119 MAP ("got", BFD_RELOC_16_GOTOFF),
2120 MAP ("got@l", BFD_RELOC_LO16_GOTOFF),
2121 MAP ("got@h", BFD_RELOC_HI16_GOTOFF),
2122 MAP ("got@ha", BFD_RELOC_HI16_S_GOTOFF),
2123 MAP ("plt@l", BFD_RELOC_LO16_PLTOFF),
2124 MAP ("plt@h", BFD_RELOC_HI16_PLTOFF),
2125 MAP ("plt@ha", BFD_RELOC_HI16_S_PLTOFF),
2126 MAP ("copy", BFD_RELOC_PPC_COPY),
2127 MAP ("globdat", BFD_RELOC_PPC_GLOB_DAT),
2128 MAP ("sectoff", BFD_RELOC_16_BASEREL),
2129 MAP ("sectoff@l", BFD_RELOC_LO16_BASEREL),
2130 MAP ("sectoff@h", BFD_RELOC_HI16_BASEREL),
2131 MAP ("sectoff@ha", BFD_RELOC_HI16_S_BASEREL),
2132 MAP ("tls", BFD_RELOC_PPC_TLS),
2133 MAP ("dtpmod", BFD_RELOC_PPC_DTPMOD),
2134 MAP ("dtprel", BFD_RELOC_PPC_DTPREL),
2135 MAP ("dtprel@l", BFD_RELOC_PPC_DTPREL16_LO),
2136 MAP ("dtprel@h", BFD_RELOC_PPC_DTPREL16_HI),
2137 MAP ("dtprel@ha", BFD_RELOC_PPC_DTPREL16_HA),
2138 MAP ("tprel", BFD_RELOC_PPC_TPREL),
2139 MAP ("tprel@l", BFD_RELOC_PPC_TPREL16_LO),
2140 MAP ("tprel@h", BFD_RELOC_PPC_TPREL16_HI),
2141 MAP ("tprel@ha", BFD_RELOC_PPC_TPREL16_HA),
2142 MAP ("got@tlsgd", BFD_RELOC_PPC_GOT_TLSGD16),
2143 MAP ("got@tlsgd@l", BFD_RELOC_PPC_GOT_TLSGD16_LO),
2144 MAP ("got@tlsgd@h", BFD_RELOC_PPC_GOT_TLSGD16_HI),
2145 MAP ("got@tlsgd@ha", BFD_RELOC_PPC_GOT_TLSGD16_HA),
2146 MAP ("got@tlsld", BFD_RELOC_PPC_GOT_TLSLD16),
2147 MAP ("got@tlsld@l", BFD_RELOC_PPC_GOT_TLSLD16_LO),
2148 MAP ("got@tlsld@h", BFD_RELOC_PPC_GOT_TLSLD16_HI),
2149 MAP ("got@tlsld@ha", BFD_RELOC_PPC_GOT_TLSLD16_HA),
2150 MAP ("got@dtprel", BFD_RELOC_PPC_GOT_DTPREL16),
2151 MAP ("got@dtprel@l", BFD_RELOC_PPC_GOT_DTPREL16_LO),
2152 MAP ("got@dtprel@h", BFD_RELOC_PPC_GOT_DTPREL16_HI),
2153 MAP ("got@dtprel@ha", BFD_RELOC_PPC_GOT_DTPREL16_HA),
2154 MAP ("got@tprel", BFD_RELOC_PPC_GOT_TPREL16),
2155 MAP ("got@tprel@l", BFD_RELOC_PPC_GOT_TPREL16_LO),
2156 MAP ("got@tprel@h", BFD_RELOC_PPC_GOT_TPREL16_HI),
2157 MAP ("got@tprel@ha", BFD_RELOC_PPC_GOT_TPREL16_HA),
2158 MAP32 ("fixup", BFD_RELOC_CTOR),
2159 MAP32 ("plt", BFD_RELOC_24_PLT_PCREL),
2160 MAP32 ("pltrel24", BFD_RELOC_24_PLT_PCREL),
2161 MAP32 ("local24pc", BFD_RELOC_PPC_LOCAL24PC),
2162 MAP32 ("local", BFD_RELOC_PPC_LOCAL24PC),
2163 MAP32 ("pltrel", BFD_RELOC_32_PLT_PCREL),
2164 MAP32 ("sdarel", BFD_RELOC_GPREL16),
2165 MAP32 ("sdarel@l", BFD_RELOC_PPC_VLE_SDAREL_LO16A),
2166 MAP32 ("sdarel@h", BFD_RELOC_PPC_VLE_SDAREL_HI16A),
2167 MAP32 ("sdarel@ha", BFD_RELOC_PPC_VLE_SDAREL_HA16A),
2168 MAP32 ("naddr", BFD_RELOC_PPC_EMB_NADDR32),
2169 MAP32 ("naddr16", BFD_RELOC_PPC_EMB_NADDR16),
2170 MAP32 ("naddr@l", BFD_RELOC_PPC_EMB_NADDR16_LO),
2171 MAP32 ("naddr@h", BFD_RELOC_PPC_EMB_NADDR16_HI),
2172 MAP32 ("naddr@ha", BFD_RELOC_PPC_EMB_NADDR16_HA),
2173 MAP32 ("sdai16", BFD_RELOC_PPC_EMB_SDAI16),
2174 MAP32 ("sda2rel", BFD_RELOC_PPC_EMB_SDA2REL),
2175 MAP32 ("sda2i16", BFD_RELOC_PPC_EMB_SDA2I16),
2176 MAP32 ("sda21", BFD_RELOC_PPC_EMB_SDA21),
2177 MAP32 ("sda21@l", BFD_RELOC_PPC_VLE_SDA21_LO),
2178 MAP32 ("mrkref", BFD_RELOC_PPC_EMB_MRKREF),
2179 MAP32 ("relsect", BFD_RELOC_PPC_EMB_RELSEC16),
2180 MAP32 ("relsect@l", BFD_RELOC_PPC_EMB_RELST_LO),
2181 MAP32 ("relsect@h", BFD_RELOC_PPC_EMB_RELST_HI),
2182 MAP32 ("relsect@ha", BFD_RELOC_PPC_EMB_RELST_HA),
2183 MAP32 ("bitfld", BFD_RELOC_PPC_EMB_BIT_FLD),
2184 MAP32 ("relsda", BFD_RELOC_PPC_EMB_RELSDA),
2185 MAP32 ("xgot", BFD_RELOC_PPC_TOC16),
2186 MAP64 ("high", BFD_RELOC_PPC64_ADDR16_HIGH),
2187 MAP64 ("higha", BFD_RELOC_PPC64_ADDR16_HIGHA),
2188 MAP64 ("higher", BFD_RELOC_PPC64_HIGHER),
2189 MAP64 ("highera", BFD_RELOC_PPC64_HIGHER_S),
2190 MAP64 ("highest", BFD_RELOC_PPC64_HIGHEST),
2191 MAP64 ("highesta", BFD_RELOC_PPC64_HIGHEST_S),
2192 MAP64 ("tocbase", BFD_RELOC_PPC64_TOC),
2193 MAP64 ("toc", BFD_RELOC_PPC_TOC16),
2194 MAP64 ("toc@l", BFD_RELOC_PPC64_TOC16_LO),
2195 MAP64 ("toc@h", BFD_RELOC_PPC64_TOC16_HI),
2196 MAP64 ("toc@ha", BFD_RELOC_PPC64_TOC16_HA),
2197 MAP64 ("dtprel@high", BFD_RELOC_PPC64_DTPREL16_HIGH),
2198 MAP64 ("dtprel@higha", BFD_RELOC_PPC64_DTPREL16_HIGHA),
2199 MAP64 ("dtprel@higher", BFD_RELOC_PPC64_DTPREL16_HIGHER),
2200 MAP64 ("dtprel@highera", BFD_RELOC_PPC64_DTPREL16_HIGHERA),
2201 MAP64 ("dtprel@highest", BFD_RELOC_PPC64_DTPREL16_HIGHEST),
2202 MAP64 ("dtprel@highesta", BFD_RELOC_PPC64_DTPREL16_HIGHESTA),
2203 MAP64 ("localentry", BFD_RELOC_PPC64_ADDR64_LOCAL),
2204 MAP64 ("tprel@high", BFD_RELOC_PPC64_TPREL16_HIGH),
2205 MAP64 ("tprel@higha", BFD_RELOC_PPC64_TPREL16_HIGHA),
2206 MAP64 ("tprel@higher", BFD_RELOC_PPC64_TPREL16_HIGHER),
2207 MAP64 ("tprel@highera", BFD_RELOC_PPC64_TPREL16_HIGHERA),
2208 MAP64 ("tprel@highest", BFD_RELOC_PPC64_TPREL16_HIGHEST),
2209 MAP64 ("tprel@highesta", BFD_RELOC_PPC64_TPREL16_HIGHESTA),
2210 MAP64 ("notoc", BFD_RELOC_PPC64_REL24_NOTOC),
2211 MAP64 ("pcrel", BFD_RELOC_PPC64_PCREL34),
2212 MAP64 ("got@pcrel", BFD_RELOC_PPC64_GOT_PCREL34),
2213 MAP64 ("plt@pcrel", BFD_RELOC_PPC64_PLT_PCREL34),
2214 MAP64 ("tls@pcrel", BFD_RELOC_PPC64_TLS_PCREL),
2215 MAP64 ("got@tlsgd@pcrel", BFD_RELOC_PPC64_GOT_TLSGD_PCREL34),
2216 MAP64 ("got@tlsld@pcrel", BFD_RELOC_PPC64_GOT_TLSLD_PCREL34),
2217 MAP64 ("got@tprel@pcrel", BFD_RELOC_PPC64_GOT_TPREL_PCREL34),
2218 MAP64 ("got@dtprel@pcrel", BFD_RELOC_PPC64_GOT_DTPREL_PCREL34),
2219 MAP64 ("higher34", BFD_RELOC_PPC64_ADDR16_HIGHER34),
2220 MAP64 ("highera34", BFD_RELOC_PPC64_ADDR16_HIGHERA34),
2221 MAP64 ("highest34", BFD_RELOC_PPC64_ADDR16_HIGHEST34),
2222 MAP64 ("highesta34", BFD_RELOC_PPC64_ADDR16_HIGHESTA34),
2223 { (char *) 0, 0, 0, 0, BFD_RELOC_NONE }
2224 };
2225
2226 if (*str++ != '@')
2227 return BFD_RELOC_NONE;
2228
2229 for (ch = *str, str2 = ident;
2230 (str2 < ident + sizeof (ident) - 1
2231 && (ISALNUM (ch) || ch == '@'));
2232 ch = *++str)
2233 {
2234 *str2++ = TOLOWER (ch);
2235 }
2236
2237 *str2 = '\0';
2238 len = str2 - ident;
2239
2240 ch = ident[0];
2241 for (ptr = &mapping[0]; ptr->length > 0; ptr++)
2242 if (ch == ptr->string[0]
2243 && len == ptr->length
2244 && memcmp (ident, ptr->string, ptr->length) == 0
2245 && (ppc_obj64 ? ptr->valid64 : ptr->valid32))
2246 {
2247 int reloc = ptr->reloc;
2248
2249 if (!ppc_obj64 && (exp_p->X_op == O_big || exp_p->X_add_number != 0))
2250 {
2251 switch (reloc)
2252 {
2253 case BFD_RELOC_16_GOTOFF:
2254 case BFD_RELOC_LO16_GOTOFF:
2255 case BFD_RELOC_HI16_GOTOFF:
2256 case BFD_RELOC_HI16_S_GOTOFF:
2257 as_warn (_("symbol+offset@%s means symbol@%s+offset"),
2258 ptr->string, ptr->string);
2259 break;
2260
2261 case BFD_RELOC_PPC_GOT_TLSGD16:
2262 case BFD_RELOC_PPC_GOT_TLSGD16_LO:
2263 case BFD_RELOC_PPC_GOT_TLSGD16_HI:
2264 case BFD_RELOC_PPC_GOT_TLSGD16_HA:
2265 case BFD_RELOC_PPC_GOT_TLSLD16:
2266 case BFD_RELOC_PPC_GOT_TLSLD16_LO:
2267 case BFD_RELOC_PPC_GOT_TLSLD16_HI:
2268 case BFD_RELOC_PPC_GOT_TLSLD16_HA:
2269 case BFD_RELOC_PPC_GOT_DTPREL16:
2270 case BFD_RELOC_PPC_GOT_DTPREL16_LO:
2271 case BFD_RELOC_PPC_GOT_DTPREL16_HI:
2272 case BFD_RELOC_PPC_GOT_DTPREL16_HA:
2273 case BFD_RELOC_PPC_GOT_TPREL16:
2274 case BFD_RELOC_PPC_GOT_TPREL16_LO:
2275 case BFD_RELOC_PPC_GOT_TPREL16_HI:
2276 case BFD_RELOC_PPC_GOT_TPREL16_HA:
2277 as_bad (_("symbol+offset@%s not supported"), ptr->string);
2278 break;
2279 }
2280 }
2281
2282 /* Now check for identifier@suffix+constant. */
2283 if (*str == '-' || *str == '+')
2284 {
2285 char *orig_line = input_line_pointer;
2286 expressionS new_exp;
2287
2288 input_line_pointer = str;
2289 expression (&new_exp);
2290 if (new_exp.X_op == O_constant && exp_p->X_op != O_big)
2291 {
2292 exp_p->X_add_number += new_exp.X_add_number;
2293 str = input_line_pointer;
2294 }
2295 input_line_pointer = orig_line;
2296 }
2297 *str_p = str;
2298
2299 if (reloc == (int) BFD_RELOC_PPC64_TOC
2300 && exp_p->X_op == O_symbol
2301 && strcmp (S_GET_NAME (exp_p->X_add_symbol), ".TOC.") == 0)
2302 {
2303 /* Change the symbol so that the dummy .TOC. symbol can be
2304 omitted from the object file. */
2305 exp_p->X_add_symbol = &abs_symbol;
2306 }
2307
2308 if (reloc == BFD_RELOC_PPC64_REL24_NOTOC
2309 && (ppc_cpu & PPC_OPCODE_POWER10) == 0)
2310 reloc = BFD_RELOC_PPC64_REL24_P9NOTOC;
2311
2312 return (bfd_reloc_code_real_type) reloc;
2313 }
2314
2315 return BFD_RELOC_NONE;
2316 }
2317
2318 /* Support @got, etc. on constants emitted via .short, .int etc. */
2319
2320 bfd_reloc_code_real_type
ppc_elf_parse_cons(expressionS * exp,unsigned int nbytes)2321 ppc_elf_parse_cons (expressionS *exp, unsigned int nbytes)
2322 {
2323 expression (exp);
2324 if (nbytes >= 2 && *input_line_pointer == '@')
2325 return ppc_elf_suffix (&input_line_pointer, exp);
2326 return BFD_RELOC_NONE;
2327 }
2328
2329 /* Warn when emitting data to code sections, unless we are emitting
2330 a relocation that ld --ppc476-workaround uses to recognise data
2331 *and* there was an unconditional branch prior to the data. */
2332
2333 void
ppc_elf_cons_fix_check(expressionS * exp ATTRIBUTE_UNUSED,unsigned int nbytes,fixS * fix)2334 ppc_elf_cons_fix_check (expressionS *exp ATTRIBUTE_UNUSED,
2335 unsigned int nbytes, fixS *fix)
2336 {
2337 if (warn_476
2338 && (now_seg->flags & SEC_CODE) != 0
2339 && (nbytes != 4
2340 || fix == NULL
2341 || !(fix->fx_r_type == BFD_RELOC_32
2342 || fix->fx_r_type == BFD_RELOC_CTOR
2343 || fix->fx_r_type == BFD_RELOC_32_PCREL)
2344 || !(last_seg == now_seg && last_subseg == now_subseg)
2345 || !((last_insn & (0x3f << 26)) == (18u << 26)
2346 || ((last_insn & (0x3f << 26)) == (16u << 26)
2347 && (last_insn & (0x14 << 21)) == (0x14 << 21))
2348 || ((last_insn & (0x3f << 26)) == (19u << 26)
2349 && (last_insn & (0x3ff << 1)) == (16u << 1)
2350 && (last_insn & (0x14 << 21)) == (0x14 << 21)))))
2351 {
2352 /* Flag that we've warned. */
2353 if (fix != NULL)
2354 fix->fx_tcbit = 1;
2355
2356 as_warn (_("data in executable section"));
2357 }
2358 }
2359
2360 /* Solaris pseduo op to change to the .rodata section. */
2361 static void
ppc_elf_rdata(int xxx)2362 ppc_elf_rdata (int xxx)
2363 {
2364 char *save_line = input_line_pointer;
2365 static char section[] = ".rodata\n";
2366
2367 /* Just pretend this is .section .rodata */
2368 input_line_pointer = section;
2369 obj_elf_section (xxx);
2370
2371 input_line_pointer = save_line;
2372 }
2373
2374 /* Pseudo op to make file scope bss items. */
2375 static void
ppc_elf_lcomm(int xxx ATTRIBUTE_UNUSED)2376 ppc_elf_lcomm (int xxx ATTRIBUTE_UNUSED)
2377 {
2378 char *name;
2379 char c;
2380 char *p;
2381 offsetT size;
2382 symbolS *symbolP;
2383 offsetT align;
2384 segT old_sec;
2385 int old_subsec;
2386 char *pfrag;
2387 int align2;
2388
2389 c = get_symbol_name (&name);
2390
2391 /* Just after name is now '\0'. */
2392 p = input_line_pointer;
2393 *p = c;
2394 SKIP_WHITESPACE_AFTER_NAME ();
2395 if (*input_line_pointer != ',')
2396 {
2397 as_bad (_("expected comma after symbol-name: rest of line ignored."));
2398 ignore_rest_of_line ();
2399 return;
2400 }
2401
2402 input_line_pointer++; /* skip ',' */
2403 if ((size = get_absolute_expression ()) < 0)
2404 {
2405 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size);
2406 ignore_rest_of_line ();
2407 return;
2408 }
2409
2410 /* The third argument to .lcomm is the alignment. */
2411 if (*input_line_pointer != ',')
2412 align = 8;
2413 else
2414 {
2415 ++input_line_pointer;
2416 align = get_absolute_expression ();
2417 if (align <= 0)
2418 {
2419 as_warn (_("ignoring bad alignment"));
2420 align = 8;
2421 }
2422 }
2423
2424 *p = 0;
2425 symbolP = symbol_find_or_make (name);
2426 *p = c;
2427
2428 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
2429 {
2430 as_bad (_("ignoring attempt to re-define symbol `%s'."),
2431 S_GET_NAME (symbolP));
2432 ignore_rest_of_line ();
2433 return;
2434 }
2435
2436 if (S_GET_VALUE (symbolP) && S_GET_VALUE (symbolP) != (valueT) size)
2437 {
2438 as_bad (_("length of .lcomm \"%s\" is already %ld. Not changed to %ld."),
2439 S_GET_NAME (symbolP),
2440 (long) S_GET_VALUE (symbolP),
2441 (long) size);
2442
2443 ignore_rest_of_line ();
2444 return;
2445 }
2446
2447 /* Allocate_bss. */
2448 old_sec = now_seg;
2449 old_subsec = now_subseg;
2450 if (align)
2451 {
2452 /* Convert to a power of 2 alignment. */
2453 for (align2 = 0; (align & 1) == 0; align >>= 1, ++align2);
2454 if (align != 1)
2455 {
2456 as_bad (_("common alignment not a power of 2"));
2457 ignore_rest_of_line ();
2458 return;
2459 }
2460 }
2461 else
2462 align2 = 0;
2463
2464 record_alignment (bss_section, align2);
2465 subseg_set (bss_section, 1);
2466 if (align2)
2467 frag_align (align2, 0, 0);
2468 if (S_GET_SEGMENT (symbolP) == bss_section)
2469 symbol_get_frag (symbolP)->fr_symbol = 0;
2470 symbol_set_frag (symbolP, frag_now);
2471 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size,
2472 (char *) 0);
2473 *pfrag = 0;
2474 S_SET_SIZE (symbolP, size);
2475 S_SET_SEGMENT (symbolP, bss_section);
2476 subseg_set (old_sec, old_subsec);
2477 demand_empty_rest_of_line ();
2478 }
2479
2480 /* Pseudo op to set symbol local entry point. */
2481 static void
ppc_elf_localentry(int ignore ATTRIBUTE_UNUSED)2482 ppc_elf_localentry (int ignore ATTRIBUTE_UNUSED)
2483 {
2484 char *name;
2485 char c = get_symbol_name (&name);
2486 char *p;
2487 expressionS exp;
2488 symbolS *sym;
2489 asymbol *bfdsym;
2490 elf_symbol_type *elfsym;
2491
2492 p = input_line_pointer;
2493 *p = c;
2494 SKIP_WHITESPACE_AFTER_NAME ();
2495 if (*input_line_pointer != ',')
2496 {
2497 *p = 0;
2498 as_bad (_("expected comma after name `%s' in .localentry directive"),
2499 name);
2500 *p = c;
2501 ignore_rest_of_line ();
2502 return;
2503 }
2504 input_line_pointer++;
2505 expression (&exp);
2506 if (exp.X_op == O_absent)
2507 {
2508 as_bad (_("missing expression in .localentry directive"));
2509 exp.X_op = O_constant;
2510 exp.X_add_number = 0;
2511 }
2512 *p = 0;
2513 sym = symbol_find_or_make (name);
2514 *p = c;
2515
2516 if (resolve_expression (&exp)
2517 && exp.X_op == O_constant)
2518 {
2519 unsigned int encoded, ok;
2520
2521 ok = 1;
2522 if (exp.X_add_number == 1 || exp.X_add_number == 7)
2523 encoded = exp.X_add_number << STO_PPC64_LOCAL_BIT;
2524 else
2525 {
2526 encoded = PPC64_SET_LOCAL_ENTRY_OFFSET (exp.X_add_number);
2527 if (exp.X_add_number != (offsetT) PPC64_LOCAL_ENTRY_OFFSET (encoded))
2528 {
2529 as_bad (_(".localentry expression for `%s' "
2530 "is not a valid power of 2"), S_GET_NAME (sym));
2531 ok = 0;
2532 }
2533 }
2534 if (ok)
2535 {
2536 bfdsym = symbol_get_bfdsym (sym);
2537 elfsym = elf_symbol_from (bfdsym);
2538 gas_assert (elfsym);
2539 elfsym->internal_elf_sym.st_other &= ~STO_PPC64_LOCAL_MASK;
2540 elfsym->internal_elf_sym.st_other |= encoded;
2541 if (ppc_abiversion == 0)
2542 ppc_abiversion = 2;
2543 }
2544 }
2545 else
2546 as_bad (_(".localentry expression for `%s' "
2547 "does not evaluate to a constant"), S_GET_NAME (sym));
2548
2549 demand_empty_rest_of_line ();
2550 }
2551
2552 /* Pseudo op to set ABI version. */
2553 static void
ppc_elf_abiversion(int ignore ATTRIBUTE_UNUSED)2554 ppc_elf_abiversion (int ignore ATTRIBUTE_UNUSED)
2555 {
2556 expressionS exp;
2557
2558 expression (&exp);
2559 if (exp.X_op == O_absent)
2560 {
2561 as_bad (_("missing expression in .abiversion directive"));
2562 exp.X_op = O_constant;
2563 exp.X_add_number = 0;
2564 }
2565
2566 if (resolve_expression (&exp)
2567 && exp.X_op == O_constant)
2568 ppc_abiversion = exp.X_add_number;
2569 else
2570 as_bad (_(".abiversion expression does not evaluate to a constant"));
2571 demand_empty_rest_of_line ();
2572 }
2573
2574 /* Parse a .gnu_attribute directive. */
2575 static void
ppc_elf_gnu_attribute(int ignored ATTRIBUTE_UNUSED)2576 ppc_elf_gnu_attribute (int ignored ATTRIBUTE_UNUSED)
2577 {
2578 int tag = obj_elf_vendor_attribute (OBJ_ATTR_GNU);
2579
2580 /* Check validity of defined powerpc tags. */
2581 if (tag == Tag_GNU_Power_ABI_FP
2582 || tag == Tag_GNU_Power_ABI_Vector
2583 || tag == Tag_GNU_Power_ABI_Struct_Return)
2584 {
2585 unsigned int val;
2586
2587 val = bfd_elf_get_obj_attr_int (stdoutput, OBJ_ATTR_GNU, tag);
2588
2589 if ((tag == Tag_GNU_Power_ABI_FP && val > 15)
2590 || (tag == Tag_GNU_Power_ABI_Vector && val > 3)
2591 || (tag == Tag_GNU_Power_ABI_Struct_Return && val > 2))
2592 as_warn (_("unknown .gnu_attribute value"));
2593 }
2594 }
2595
2596 /* Set ABI version in output file. */
2597 void
ppc_elf_md_finish(void)2598 ppc_elf_md_finish (void)
2599 {
2600 if (ppc_obj64 && ppc_abiversion != 0)
2601 {
2602 elf_elfheader (stdoutput)->e_flags &= ~EF_PPC64_ABI;
2603 elf_elfheader (stdoutput)->e_flags |= ppc_abiversion & EF_PPC64_ABI;
2604 }
2605 /* Any selection of opcodes based on ppc_cpu after gas has finished
2606 parsing the file is invalid. md_apply_fix and ppc_handle_align
2607 must select opcodes based on the machine in force at the point
2608 where the fixup or alignment frag was created, not the machine in
2609 force at the end of file. */
2610 ppc_cpu = 0;
2611 }
2612
2613 /* Validate any relocations emitted for -mrelocatable, possibly adding
2614 fixups for word relocations in writable segments, so we can adjust
2615 them at runtime. */
2616 static void
ppc_elf_validate_fix(fixS * fixp,segT seg)2617 ppc_elf_validate_fix (fixS *fixp, segT seg)
2618 {
2619 if (fixp->fx_done || fixp->fx_pcrel)
2620 return;
2621
2622 switch (shlib)
2623 {
2624 case SHLIB_NONE:
2625 case SHLIB_PIC:
2626 return;
2627
2628 case SHLIB_MRELOCATABLE:
2629 if (fixp->fx_r_type != BFD_RELOC_16_GOTOFF
2630 && fixp->fx_r_type != BFD_RELOC_HI16_GOTOFF
2631 && fixp->fx_r_type != BFD_RELOC_LO16_GOTOFF
2632 && fixp->fx_r_type != BFD_RELOC_HI16_S_GOTOFF
2633 && fixp->fx_r_type != BFD_RELOC_16_BASEREL
2634 && fixp->fx_r_type != BFD_RELOC_LO16_BASEREL
2635 && fixp->fx_r_type != BFD_RELOC_HI16_BASEREL
2636 && fixp->fx_r_type != BFD_RELOC_HI16_S_BASEREL
2637 && (seg->flags & SEC_LOAD) != 0
2638 && strcmp (segment_name (seg), ".got2") != 0
2639 && strcmp (segment_name (seg), ".dtors") != 0
2640 && strcmp (segment_name (seg), ".ctors") != 0
2641 && strcmp (segment_name (seg), ".fixup") != 0
2642 && strcmp (segment_name (seg), ".gcc_except_table") != 0
2643 && strcmp (segment_name (seg), ".eh_frame") != 0
2644 && strcmp (segment_name (seg), ".ex_shared") != 0)
2645 {
2646 if ((seg->flags & (SEC_READONLY | SEC_CODE)) != 0
2647 || fixp->fx_r_type != BFD_RELOC_CTOR)
2648 {
2649 as_bad_where (fixp->fx_file, fixp->fx_line,
2650 _("relocation cannot be done when using -mrelocatable"));
2651 }
2652 }
2653 return;
2654 }
2655 }
2656
2657 /* Prevent elf_frob_file_before_adjust removing a weak undefined
2658 function descriptor sym if the corresponding code sym is used. */
2659
2660 void
ppc_frob_file_before_adjust(void)2661 ppc_frob_file_before_adjust (void)
2662 {
2663 symbolS *symp;
2664 asection *toc;
2665
2666 if (!ppc_obj64)
2667 return;
2668
2669 for (symp = symbol_rootP; symp; symp = symbol_next (symp))
2670 {
2671 const char *name;
2672 char *dotname;
2673 symbolS *dotsym;
2674
2675 name = S_GET_NAME (symp);
2676 if (name[0] == '.')
2677 continue;
2678
2679 if (! S_IS_WEAK (symp)
2680 || S_IS_DEFINED (symp))
2681 continue;
2682
2683 dotname = concat (".", name, (char *) NULL);
2684 dotsym = symbol_find_noref (dotname, 1);
2685 free (dotname);
2686 if (dotsym != NULL && (symbol_used_p (dotsym)
2687 || symbol_used_in_reloc_p (dotsym)))
2688 symbol_mark_used (symp);
2689
2690 }
2691
2692 toc = bfd_get_section_by_name (stdoutput, ".toc");
2693 if (toc != NULL
2694 && toc_reloc_types != has_large_toc_reloc
2695 && bfd_section_size (toc) > 0x10000)
2696 as_warn (_("TOC section size exceeds 64k"));
2697 }
2698
2699 /* .TOC. used in an opd entry as .TOC.@tocbase doesn't need to be
2700 emitted. Other uses of .TOC. will cause the symbol to be marked
2701 with BSF_KEEP in md_apply_fix. */
2702
2703 void
ppc_elf_adjust_symtab(void)2704 ppc_elf_adjust_symtab (void)
2705 {
2706 if (ppc_obj64)
2707 {
2708 symbolS *symp;
2709 symp = symbol_find (".TOC.");
2710 if (symp != NULL)
2711 {
2712 asymbol *bsym = symbol_get_bfdsym (symp);
2713 if ((bsym->flags & BSF_KEEP) == 0)
2714 symbol_remove (symp, &symbol_rootP, &symbol_lastP);
2715 }
2716 }
2717 }
2718 #endif /* OBJ_ELF */
2719
2720 #ifdef OBJ_XCOFF
2721 /* Parse XCOFF relocations. */
2722 static bfd_reloc_code_real_type
ppc_xcoff_suffix(char ** str_p)2723 ppc_xcoff_suffix (char **str_p)
2724 {
2725 struct map_bfd {
2726 const char *string;
2727 unsigned int length : 8;
2728 unsigned int valid32 : 1;
2729 unsigned int valid64 : 1;
2730 unsigned int reloc;
2731 };
2732
2733 char ident[20];
2734 char *str = *str_p;
2735 char *str2;
2736 int ch;
2737 int len;
2738 const struct map_bfd *ptr;
2739
2740 #define MAP(str, reloc) { str, sizeof (str) - 1, 1, 1, reloc }
2741 #define MAP32(str, reloc) { str, sizeof (str) - 1, 1, 0, reloc }
2742 #define MAP64(str, reloc) { str, sizeof (str) - 1, 0, 1, reloc }
2743
2744 static const struct map_bfd mapping[] = {
2745 MAP ("l", BFD_RELOC_PPC_TOC16_LO),
2746 MAP ("u", BFD_RELOC_PPC_TOC16_HI),
2747 MAP32 ("ie", BFD_RELOC_PPC_TLSIE),
2748 MAP32 ("ld", BFD_RELOC_PPC_TLSLD),
2749 MAP32 ("le", BFD_RELOC_PPC_TLSLE),
2750 MAP32 ("m", BFD_RELOC_PPC_TLSM),
2751 MAP32 ("ml", BFD_RELOC_PPC_TLSML),
2752 MAP64 ("ie", BFD_RELOC_PPC64_TLSIE),
2753 MAP64 ("ld", BFD_RELOC_PPC64_TLSLD),
2754 MAP64 ("le", BFD_RELOC_PPC64_TLSLE),
2755 MAP64 ("m", BFD_RELOC_PPC64_TLSM),
2756 MAP64 ("ml", BFD_RELOC_PPC64_TLSML),
2757 };
2758
2759 if (*str++ != '@')
2760 return BFD_RELOC_NONE;
2761
2762 for (ch = *str, str2 = ident;
2763 (str2 < ident + sizeof (ident) - 1
2764 && (ISALNUM (ch) || ch == '@'));
2765 ch = *++str)
2766 {
2767 *str2++ = TOLOWER (ch);
2768 }
2769
2770 *str2 = '\0';
2771 len = str2 - ident;
2772
2773 ch = ident[0];
2774 for (ptr = &mapping[0]; ptr->length > 0; ptr++)
2775 if (ch == ptr->string[0]
2776 && len == ptr->length
2777 && memcmp (ident, ptr->string, ptr->length) == 0
2778 && (ppc_obj64 ? ptr->valid64 : ptr->valid32))
2779 {
2780 *str_p = str;
2781 return (bfd_reloc_code_real_type) ptr->reloc;
2782 }
2783
2784 return BFD_RELOC_NONE;
2785 }
2786
2787 /* Restore XCOFF addis instruction to ELF format.
2788 AIX often generates addis instructions using "addis RT,D(RA)"
2789 format instead of the ELF "addis RT,RA,SI" one.
2790 On entry RT_E is at the comma after RT, D_E is at the open
2791 parenthesis after D, and RA_E is at the close parenthesis after RA. */
2792 static void
ppc_xcoff_fixup_addis(char * rt_e,char * d_e,char * ra_e)2793 ppc_xcoff_fixup_addis (char *rt_e, char *d_e, char *ra_e)
2794 {
2795 size_t ra_size = ra_e - d_e - 1;
2796 char *save_ra = xmalloc (ra_size);
2797
2798 /* Copy RA. */
2799 memcpy (save_ra, d_e + 1, ra_size);
2800 /* Shuffle D to make room for RA, copying the comma too. */
2801 memmove (rt_e + ra_size + 1, rt_e, d_e - rt_e);
2802 /* Erase the trailing ')', keeping any rubbish for potential errors. */
2803 memmove (ra_e, ra_e + 1, strlen (ra_e));
2804 /* Write RA back. */
2805 memcpy (rt_e + 1, save_ra, ra_size);
2806 free (save_ra);
2807 }
2808
2809 /* Support @ie, etc. on constants emitted via .short, .int etc. */
2810
2811 bfd_reloc_code_real_type
ppc_xcoff_parse_cons(expressionS * exp,unsigned int nbytes)2812 ppc_xcoff_parse_cons (expressionS *exp, unsigned int nbytes)
2813 {
2814 expression (exp);
2815 if (nbytes >= 2 && *input_line_pointer == '@')
2816 return ppc_xcoff_suffix (&input_line_pointer);
2817
2818 /* There isn't any @ symbol for default TLS relocations (R_TLS). */
2819 if (exp->X_add_symbol != NULL
2820 && (symbol_get_tc (exp->X_add_symbol)->symbol_class == XMC_TL
2821 || symbol_get_tc (exp->X_add_symbol)->symbol_class == XMC_UL))
2822 return (ppc_obj64 ? BFD_RELOC_PPC64_TLSGD: BFD_RELOC_PPC_TLSGD);
2823
2824 return BFD_RELOC_NONE;
2825 }
2826
2827 #endif /* OBJ_XCOFF */
2828
2829 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
2830 /* See whether a symbol is in the TOC section. */
2831
2832 static int
ppc_is_toc_sym(symbolS * sym)2833 ppc_is_toc_sym (symbolS *sym)
2834 {
2835 #ifdef OBJ_XCOFF
2836 return (symbol_get_tc (sym)->symbol_class == XMC_TC
2837 || symbol_get_tc (sym)->symbol_class == XMC_TE
2838 || symbol_get_tc (sym)->symbol_class == XMC_TC0);
2839 #endif
2840 #ifdef OBJ_ELF
2841 const char *sname = segment_name (S_GET_SEGMENT (sym));
2842 if (ppc_obj64)
2843 return strcmp (sname, ".toc") == 0;
2844 else
2845 return strcmp (sname, ".got") == 0;
2846 #endif
2847 }
2848 #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
2849
2850
2851 #ifdef OBJ_ELF
2852 #define APUID(a,v) ((((a) & 0xffff) << 16) | ((v) & 0xffff))
2853 static void
ppc_apuinfo_section_add(unsigned int apu,unsigned int version)2854 ppc_apuinfo_section_add (unsigned int apu, unsigned int version)
2855 {
2856 unsigned int i;
2857
2858 /* Check we don't already exist. */
2859 for (i = 0; i < ppc_apuinfo_num; i++)
2860 if (ppc_apuinfo_list[i] == APUID (apu, version))
2861 return;
2862
2863 if (ppc_apuinfo_num == ppc_apuinfo_num_alloc)
2864 {
2865 if (ppc_apuinfo_num_alloc == 0)
2866 {
2867 ppc_apuinfo_num_alloc = 4;
2868 ppc_apuinfo_list = XNEWVEC (unsigned long, ppc_apuinfo_num_alloc);
2869 }
2870 else
2871 {
2872 ppc_apuinfo_num_alloc += 4;
2873 ppc_apuinfo_list = XRESIZEVEC (unsigned long, ppc_apuinfo_list,
2874 ppc_apuinfo_num_alloc);
2875 }
2876 }
2877 ppc_apuinfo_list[ppc_apuinfo_num++] = APUID (apu, version);
2878 }
2879 #undef APUID
2880 #endif
2881
2882 /* Various frobbings of labels and their addresses. */
2883
2884 /* Symbols labelling the current insn. */
2885 struct insn_label_list
2886 {
2887 struct insn_label_list *next;
2888 symbolS *label;
2889 };
2890
2891 static struct insn_label_list *insn_labels;
2892 static struct insn_label_list *free_insn_labels;
2893
2894 static void
ppc_record_label(symbolS * sym)2895 ppc_record_label (symbolS *sym)
2896 {
2897 struct insn_label_list *l;
2898
2899 if (free_insn_labels == NULL)
2900 l = XNEW (struct insn_label_list);
2901 else
2902 {
2903 l = free_insn_labels;
2904 free_insn_labels = l->next;
2905 }
2906
2907 l->label = sym;
2908 l->next = insn_labels;
2909 insn_labels = l;
2910 }
2911
2912 static void
ppc_clear_labels(void)2913 ppc_clear_labels (void)
2914 {
2915 while (insn_labels != NULL)
2916 {
2917 struct insn_label_list *l = insn_labels;
2918 insn_labels = l->next;
2919 l->next = free_insn_labels;
2920 free_insn_labels = l;
2921 }
2922 }
2923
2924 void
ppc_start_line_hook(void)2925 ppc_start_line_hook (void)
2926 {
2927 ppc_clear_labels ();
2928 }
2929
2930 void
ppc_new_dot_label(symbolS * sym)2931 ppc_new_dot_label (symbolS *sym)
2932 {
2933 ppc_record_label (sym);
2934 #ifdef OBJ_XCOFF
2935 /* Anchor this label to the current csect for relocations. */
2936 symbol_get_tc (sym)->within = ppc_current_csect;
2937 #endif
2938 }
2939
2940 void
ppc_frob_label(symbolS * sym)2941 ppc_frob_label (symbolS *sym)
2942 {
2943 ppc_record_label (sym);
2944
2945 #ifdef OBJ_XCOFF
2946 /* Set the class of a label based on where it is defined. This handles
2947 symbols without suffixes. Also, move the symbol so that it follows
2948 the csect symbol. */
2949 if (ppc_current_csect != (symbolS *) NULL)
2950 {
2951 if (symbol_get_tc (sym)->symbol_class == -1)
2952 symbol_get_tc (sym)->symbol_class = symbol_get_tc (ppc_current_csect)->symbol_class;
2953
2954 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
2955 symbol_append (sym, symbol_get_tc (ppc_current_csect)->within,
2956 &symbol_rootP, &symbol_lastP);
2957 /* Update last csect symbol. */
2958 symbol_get_tc (ppc_current_csect)->within = sym;
2959
2960 /* Some labels like .bs are using within differently.
2961 So avoid changing it, if it's already set. */
2962 if (symbol_get_tc (sym)->within == NULL)
2963 symbol_get_tc (sym)->within = ppc_current_csect;
2964 }
2965 #endif
2966
2967 #ifdef OBJ_ELF
2968 dwarf2_emit_label (sym);
2969 #endif
2970 }
2971
2972 /* We need to keep a list of fixups. We can't simply generate them as
2973 we go, because that would require us to first create the frag, and
2974 that would screw up references to ``.''. */
2975
2976 struct ppc_fixup
2977 {
2978 expressionS exp;
2979 int opindex;
2980 bfd_reloc_code_real_type reloc;
2981 };
2982
2983 #define MAX_INSN_FIXUPS (5)
2984
2985 /* Return the field size operated on by RELOC, and whether it is
2986 pc-relative in PC_RELATIVE. */
2987
2988 static unsigned int
fixup_size(bfd_reloc_code_real_type reloc,bool * pc_relative)2989 fixup_size (bfd_reloc_code_real_type reloc, bool *pc_relative)
2990 {
2991 unsigned int size = 0;
2992 bool pcrel = false;
2993
2994 switch (reloc)
2995 {
2996 /* This switch statement must handle all BFD_RELOC values
2997 possible in instruction fixups. As is, it handles all
2998 BFD_RELOC values used in bfd/elf64-ppc.c, bfd/elf32-ppc.c,
2999 bfd/coff-rs6000.c and bfd/coff64-rs6000.c.
3000 Overkill since data and marker relocs need not be handled
3001 here, but this way we can be sure a needed fixup reloc isn't
3002 accidentally omitted. */
3003 case BFD_RELOC_PPC_EMB_MRKREF:
3004 case BFD_RELOC_VTABLE_ENTRY:
3005 case BFD_RELOC_VTABLE_INHERIT:
3006 break;
3007
3008 case BFD_RELOC_8:
3009 size = 1;
3010 break;
3011
3012 case BFD_RELOC_16:
3013 case BFD_RELOC_16_BASEREL:
3014 case BFD_RELOC_16_GOTOFF:
3015 case BFD_RELOC_GPREL16:
3016 case BFD_RELOC_HI16:
3017 case BFD_RELOC_HI16_BASEREL:
3018 case BFD_RELOC_HI16_GOTOFF:
3019 case BFD_RELOC_HI16_PLTOFF:
3020 case BFD_RELOC_HI16_S:
3021 case BFD_RELOC_HI16_S_BASEREL:
3022 case BFD_RELOC_HI16_S_GOTOFF:
3023 case BFD_RELOC_HI16_S_PLTOFF:
3024 case BFD_RELOC_LO16:
3025 case BFD_RELOC_LO16_BASEREL:
3026 case BFD_RELOC_LO16_GOTOFF:
3027 case BFD_RELOC_LO16_PLTOFF:
3028 case BFD_RELOC_PPC64_ADDR16_DS:
3029 case BFD_RELOC_PPC64_ADDR16_HIGH:
3030 case BFD_RELOC_PPC64_ADDR16_HIGHA:
3031 case BFD_RELOC_PPC64_ADDR16_HIGHER34:
3032 case BFD_RELOC_PPC64_ADDR16_HIGHERA34:
3033 case BFD_RELOC_PPC64_ADDR16_HIGHEST34:
3034 case BFD_RELOC_PPC64_ADDR16_HIGHESTA34:
3035 case BFD_RELOC_PPC64_ADDR16_LO_DS:
3036 case BFD_RELOC_PPC64_DTPREL16_DS:
3037 case BFD_RELOC_PPC64_DTPREL16_HIGH:
3038 case BFD_RELOC_PPC64_DTPREL16_HIGHA:
3039 case BFD_RELOC_PPC64_DTPREL16_HIGHER:
3040 case BFD_RELOC_PPC64_DTPREL16_HIGHERA:
3041 case BFD_RELOC_PPC64_DTPREL16_HIGHEST:
3042 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA:
3043 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
3044 case BFD_RELOC_PPC64_GOT16_DS:
3045 case BFD_RELOC_PPC64_GOT16_LO_DS:
3046 case BFD_RELOC_PPC64_HIGHER:
3047 case BFD_RELOC_PPC64_HIGHER_S:
3048 case BFD_RELOC_PPC64_HIGHEST:
3049 case BFD_RELOC_PPC64_HIGHEST_S:
3050 case BFD_RELOC_PPC64_PLT16_LO_DS:
3051 case BFD_RELOC_PPC64_PLTGOT16:
3052 case BFD_RELOC_PPC64_PLTGOT16_DS:
3053 case BFD_RELOC_PPC64_PLTGOT16_HA:
3054 case BFD_RELOC_PPC64_PLTGOT16_HI:
3055 case BFD_RELOC_PPC64_PLTGOT16_LO:
3056 case BFD_RELOC_PPC64_PLTGOT16_LO_DS:
3057 case BFD_RELOC_PPC64_SECTOFF_DS:
3058 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
3059 case BFD_RELOC_PPC64_TOC16_DS:
3060 case BFD_RELOC_PPC64_TOC16_HA:
3061 case BFD_RELOC_PPC64_TOC16_HI:
3062 case BFD_RELOC_PPC64_TOC16_LO:
3063 case BFD_RELOC_PPC64_TOC16_LO_DS:
3064 case BFD_RELOC_PPC64_TPREL16_DS:
3065 case BFD_RELOC_PPC64_TPREL16_HIGH:
3066 case BFD_RELOC_PPC64_TPREL16_HIGHA:
3067 case BFD_RELOC_PPC64_TPREL16_HIGHER:
3068 case BFD_RELOC_PPC64_TPREL16_HIGHERA:
3069 case BFD_RELOC_PPC64_TPREL16_HIGHEST:
3070 case BFD_RELOC_PPC64_TPREL16_HIGHESTA:
3071 case BFD_RELOC_PPC64_TPREL16_LO_DS:
3072 #ifdef OBJ_XCOFF
3073 case BFD_RELOC_PPC_BA16:
3074 #endif
3075 case BFD_RELOC_PPC_DTPREL16:
3076 case BFD_RELOC_PPC_DTPREL16_HA:
3077 case BFD_RELOC_PPC_DTPREL16_HI:
3078 case BFD_RELOC_PPC_DTPREL16_LO:
3079 case BFD_RELOC_PPC_EMB_NADDR16:
3080 case BFD_RELOC_PPC_EMB_NADDR16_HA:
3081 case BFD_RELOC_PPC_EMB_NADDR16_HI:
3082 case BFD_RELOC_PPC_EMB_NADDR16_LO:
3083 case BFD_RELOC_PPC_EMB_RELSDA:
3084 case BFD_RELOC_PPC_EMB_RELSEC16:
3085 case BFD_RELOC_PPC_EMB_RELST_LO:
3086 case BFD_RELOC_PPC_EMB_RELST_HI:
3087 case BFD_RELOC_PPC_EMB_RELST_HA:
3088 case BFD_RELOC_PPC_EMB_SDA2I16:
3089 case BFD_RELOC_PPC_EMB_SDA2REL:
3090 case BFD_RELOC_PPC_EMB_SDAI16:
3091 case BFD_RELOC_PPC_GOT_DTPREL16:
3092 case BFD_RELOC_PPC_GOT_DTPREL16_HA:
3093 case BFD_RELOC_PPC_GOT_DTPREL16_HI:
3094 case BFD_RELOC_PPC_GOT_DTPREL16_LO:
3095 case BFD_RELOC_PPC_GOT_TLSGD16:
3096 case BFD_RELOC_PPC_GOT_TLSGD16_HA:
3097 case BFD_RELOC_PPC_GOT_TLSGD16_HI:
3098 case BFD_RELOC_PPC_GOT_TLSGD16_LO:
3099 case BFD_RELOC_PPC_GOT_TLSLD16:
3100 case BFD_RELOC_PPC_GOT_TLSLD16_HA:
3101 case BFD_RELOC_PPC_GOT_TLSLD16_HI:
3102 case BFD_RELOC_PPC_GOT_TLSLD16_LO:
3103 case BFD_RELOC_PPC_GOT_TPREL16:
3104 case BFD_RELOC_PPC_GOT_TPREL16_HA:
3105 case BFD_RELOC_PPC_GOT_TPREL16_HI:
3106 case BFD_RELOC_PPC_GOT_TPREL16_LO:
3107 case BFD_RELOC_PPC_TOC16:
3108 case BFD_RELOC_PPC_TOC16_HI:
3109 case BFD_RELOC_PPC_TOC16_LO:
3110 case BFD_RELOC_PPC_TPREL16:
3111 case BFD_RELOC_PPC_TPREL16_HA:
3112 case BFD_RELOC_PPC_TPREL16_HI:
3113 case BFD_RELOC_PPC_TPREL16_LO:
3114 size = 2;
3115 break;
3116
3117 case BFD_RELOC_16_PCREL:
3118 case BFD_RELOC_HI16_PCREL:
3119 case BFD_RELOC_HI16_S_PCREL:
3120 case BFD_RELOC_LO16_PCREL:
3121 case BFD_RELOC_PPC64_REL16_HIGH:
3122 case BFD_RELOC_PPC64_REL16_HIGHA:
3123 case BFD_RELOC_PPC64_REL16_HIGHER:
3124 case BFD_RELOC_PPC64_REL16_HIGHER34:
3125 case BFD_RELOC_PPC64_REL16_HIGHERA:
3126 case BFD_RELOC_PPC64_REL16_HIGHERA34:
3127 case BFD_RELOC_PPC64_REL16_HIGHEST:
3128 case BFD_RELOC_PPC64_REL16_HIGHEST34:
3129 case BFD_RELOC_PPC64_REL16_HIGHESTA:
3130 case BFD_RELOC_PPC64_REL16_HIGHESTA34:
3131 #ifdef OBJ_XCOFF
3132 case BFD_RELOC_PPC_B16:
3133 #endif
3134 case BFD_RELOC_PPC_VLE_REL8:
3135 size = 2;
3136 pcrel = true;
3137 break;
3138
3139 case BFD_RELOC_32:
3140 case BFD_RELOC_32_PLTOFF:
3141 #ifdef OBJ_XCOFF
3142 case BFD_RELOC_CTOR:
3143 #endif
3144 case BFD_RELOC_PPC64_ENTRY:
3145 case BFD_RELOC_PPC_16DX_HA:
3146 #ifndef OBJ_XCOFF
3147 case BFD_RELOC_PPC_BA16:
3148 #endif
3149 case BFD_RELOC_PPC_BA16_BRNTAKEN:
3150 case BFD_RELOC_PPC_BA16_BRTAKEN:
3151 case BFD_RELOC_PPC_BA26:
3152 case BFD_RELOC_PPC_EMB_BIT_FLD:
3153 case BFD_RELOC_PPC_EMB_NADDR32:
3154 case BFD_RELOC_PPC_EMB_SDA21:
3155 case BFD_RELOC_PPC_TLS:
3156 case BFD_RELOC_PPC_TLSGD:
3157 case BFD_RELOC_PPC_TLSLD:
3158 case BFD_RELOC_PPC_TLSLE:
3159 case BFD_RELOC_PPC_TLSIE:
3160 case BFD_RELOC_PPC_TLSM:
3161 case BFD_RELOC_PPC_TLSML:
3162 case BFD_RELOC_PPC_VLE_HA16A:
3163 case BFD_RELOC_PPC_VLE_HA16D:
3164 case BFD_RELOC_PPC_VLE_HI16A:
3165 case BFD_RELOC_PPC_VLE_HI16D:
3166 case BFD_RELOC_PPC_VLE_LO16A:
3167 case BFD_RELOC_PPC_VLE_LO16D:
3168 case BFD_RELOC_PPC_VLE_SDA21:
3169 case BFD_RELOC_PPC_VLE_SDA21_LO:
3170 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
3171 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
3172 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
3173 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
3174 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
3175 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
3176 case BFD_RELOC_PPC64_TLS_PCREL:
3177 case BFD_RELOC_RVA:
3178 size = 4;
3179 break;
3180
3181 case BFD_RELOC_24_PLT_PCREL:
3182 case BFD_RELOC_32_PCREL:
3183 case BFD_RELOC_32_PLT_PCREL:
3184 case BFD_RELOC_PPC64_REL24_NOTOC:
3185 case BFD_RELOC_PPC64_REL24_P9NOTOC:
3186 #ifndef OBJ_XCOFF
3187 case BFD_RELOC_PPC_B16:
3188 #endif
3189 case BFD_RELOC_PPC_B16_BRNTAKEN:
3190 case BFD_RELOC_PPC_B16_BRTAKEN:
3191 case BFD_RELOC_PPC_B26:
3192 case BFD_RELOC_PPC_LOCAL24PC:
3193 case BFD_RELOC_PPC_REL16DX_HA:
3194 case BFD_RELOC_PPC_VLE_REL15:
3195 case BFD_RELOC_PPC_VLE_REL24:
3196 size = 4;
3197 pcrel = true;
3198 break;
3199
3200 #ifndef OBJ_XCOFF
3201 case BFD_RELOC_CTOR:
3202 #endif
3203 case BFD_RELOC_PPC_COPY:
3204 case BFD_RELOC_PPC_DTPMOD:
3205 case BFD_RELOC_PPC_DTPREL:
3206 case BFD_RELOC_PPC_GLOB_DAT:
3207 case BFD_RELOC_PPC_TPREL:
3208 size = ppc_obj64 ? 8 : 4;
3209 break;
3210
3211 case BFD_RELOC_64:
3212 case BFD_RELOC_64_PLTOFF:
3213 case BFD_RELOC_PPC64_ADDR64_LOCAL:
3214 case BFD_RELOC_PPC64_D28:
3215 case BFD_RELOC_PPC64_D34:
3216 case BFD_RELOC_PPC64_D34_LO:
3217 case BFD_RELOC_PPC64_D34_HI30:
3218 case BFD_RELOC_PPC64_D34_HA30:
3219 case BFD_RELOC_PPC64_TPREL34:
3220 case BFD_RELOC_PPC64_DTPREL34:
3221 case BFD_RELOC_PPC64_TOC:
3222 case BFD_RELOC_PPC64_TLSGD:
3223 case BFD_RELOC_PPC64_TLSLD:
3224 case BFD_RELOC_PPC64_TLSLE:
3225 case BFD_RELOC_PPC64_TLSIE:
3226 case BFD_RELOC_PPC64_TLSM:
3227 case BFD_RELOC_PPC64_TLSML:
3228 size = 8;
3229 break;
3230
3231 case BFD_RELOC_64_PCREL:
3232 case BFD_RELOC_64_PLT_PCREL:
3233 case BFD_RELOC_PPC64_GOT_PCREL34:
3234 case BFD_RELOC_PPC64_GOT_TLSGD_PCREL34:
3235 case BFD_RELOC_PPC64_GOT_TLSLD_PCREL34:
3236 case BFD_RELOC_PPC64_GOT_TPREL_PCREL34:
3237 case BFD_RELOC_PPC64_GOT_DTPREL_PCREL34:
3238 case BFD_RELOC_PPC64_PCREL28:
3239 case BFD_RELOC_PPC64_PCREL34:
3240 case BFD_RELOC_PPC64_PLT_PCREL34:
3241 size = 8;
3242 pcrel = true;
3243 break;
3244
3245 default:
3246 abort ();
3247 }
3248
3249 if (ENABLE_CHECKING)
3250 {
3251 reloc_howto_type *reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc);
3252 if (reloc_howto != NULL
3253 && (size != bfd_get_reloc_size (reloc_howto)
3254 || pcrel != reloc_howto->pc_relative))
3255 {
3256 as_bad (_("%s howto doesn't match size/pcrel in gas"),
3257 reloc_howto->name);
3258 abort ();
3259 }
3260 }
3261 *pc_relative = pcrel;
3262 return size;
3263 }
3264
3265 #ifdef OBJ_ELF
3266 /* If we have parsed a call to __tls_get_addr, parse an argument like
3267 (gd0@tlsgd). *STR is the leading parenthesis on entry. If an arg
3268 is successfully parsed, *STR is updated past the trailing
3269 parenthesis and trailing white space, and *TLS_FIX contains the
3270 reloc and arg expression. */
3271
3272 static int
parse_tls_arg(char ** str,const expressionS * exp,struct ppc_fixup * tls_fix)3273 parse_tls_arg (char **str, const expressionS *exp, struct ppc_fixup *tls_fix)
3274 {
3275 const char *sym_name = S_GET_NAME (exp->X_add_symbol);
3276 if (sym_name[0] == '.')
3277 ++sym_name;
3278
3279 tls_fix->reloc = BFD_RELOC_NONE;
3280 if (strncasecmp (sym_name, "__tls_get_addr", 14) == 0
3281 && (sym_name[14] == 0
3282 || strcasecmp (sym_name + 14, "_desc") == 0
3283 || strcasecmp (sym_name + 14, "_opt") == 0))
3284 {
3285 char *hold = input_line_pointer;
3286 input_line_pointer = *str + 1;
3287 expression (&tls_fix->exp);
3288 if (tls_fix->exp.X_op == O_symbol)
3289 {
3290 if (strncasecmp (input_line_pointer, "@tlsgd)", 7) == 0)
3291 tls_fix->reloc = BFD_RELOC_PPC_TLSGD;
3292 else if (strncasecmp (input_line_pointer, "@tlsld)", 7) == 0)
3293 tls_fix->reloc = BFD_RELOC_PPC_TLSLD;
3294 if (tls_fix->reloc != BFD_RELOC_NONE)
3295 {
3296 input_line_pointer += 7;
3297 SKIP_WHITESPACE ();
3298 *str = input_line_pointer;
3299 }
3300 }
3301 input_line_pointer = hold;
3302 }
3303 return tls_fix->reloc != BFD_RELOC_NONE;
3304 }
3305 #endif
3306
3307 /* This routine is called for each instruction to be assembled. */
3308
3309 void
md_assemble(char * str)3310 md_assemble (char *str)
3311 {
3312 char *s;
3313 const struct powerpc_opcode *opcode;
3314 uint64_t insn;
3315 const ppc_opindex_t *opindex_ptr;
3316 int need_paren;
3317 int next_opindex;
3318 struct ppc_fixup fixups[MAX_INSN_FIXUPS];
3319 int fc;
3320 char *f;
3321 int addr_mask;
3322 int i;
3323 unsigned int insn_length;
3324
3325 /* Get the opcode. */
3326 for (s = str; *s != '\0' && ! ISSPACE (*s); s++)
3327 ;
3328 if (*s != '\0')
3329 *s++ = '\0';
3330
3331 /* Look up the opcode in the hash table. */
3332 opcode = (const struct powerpc_opcode *) str_hash_find (ppc_hash, str);
3333 if (opcode == (const struct powerpc_opcode *) NULL)
3334 {
3335 as_bad (_("unrecognized opcode: `%s'"), str);
3336 ppc_clear_labels ();
3337 return;
3338 }
3339
3340 insn = opcode->opcode;
3341 if (!target_big_endian
3342 && ((insn & ~(1 << 26)) == 46u << 26
3343 || (insn & ~(0xc0 << 1)) == (31u << 26 | 533 << 1)))
3344 {
3345 /* lmw, stmw, lswi, lswx, stswi, stswx */
3346 as_bad (_("`%s' invalid when little-endian"), str);
3347 ppc_clear_labels ();
3348 return;
3349 }
3350
3351 str = s;
3352 while (ISSPACE (*str))
3353 ++str;
3354
3355 #ifdef OBJ_XCOFF
3356 /* AIX often generates addis instructions using "addis RT, D(RA)"
3357 format instead of the classic "addis RT, RA, SI" one.
3358 Restore it to the default format as it's the one encoded
3359 in ppc opcodes. */
3360 if (!strcmp (opcode->name, "addis"))
3361 {
3362 char *rt_e = strchr (str, ',');
3363 if (rt_e != NULL
3364 && strchr (rt_e + 1, ',') == NULL)
3365 {
3366 char *d_e = strchr (rt_e + 1, '(');
3367 if (d_e != NULL && d_e != rt_e + 1)
3368 {
3369 char *ra_e = strrchr (d_e + 1, ')');
3370 if (ra_e != NULL && ra_e != d_e + 1)
3371 ppc_xcoff_fixup_addis (rt_e, d_e, ra_e);
3372 }
3373 }
3374 }
3375 #endif
3376
3377 /* PowerPC operands are just expressions. The only real issue is
3378 that a few operand types are optional. If an instruction has
3379 multiple optional operands and one is omitted, then all optional
3380 operands past the first omitted one must also be omitted. */
3381 int num_optional_operands = 0;
3382 int num_optional_provided = 0;
3383
3384 /* Gather the operands. */
3385 need_paren = 0;
3386 next_opindex = 0;
3387 fc = 0;
3388 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
3389 {
3390 const struct powerpc_operand *operand;
3391 const char *errmsg;
3392 char *hold;
3393 expressionS ex;
3394 char endc;
3395
3396 if (next_opindex == 0)
3397 operand = &powerpc_operands[*opindex_ptr];
3398 else
3399 {
3400 operand = &powerpc_operands[next_opindex];
3401 next_opindex = 0;
3402 }
3403 errmsg = NULL;
3404
3405 /* If this is an optional operand, and we are skipping it, just
3406 insert the default value, usually a zero. */
3407 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0
3408 && !((operand->flags & PPC_OPERAND_OPTIONAL32) != 0 && ppc_obj64))
3409 {
3410 if (num_optional_operands == 0)
3411 {
3412 const ppc_opindex_t *optr;
3413 int total = 0;
3414 int provided = 0;
3415 int omitted;
3416
3417 s = str;
3418 for (optr = opindex_ptr; *optr != 0; optr++)
3419 {
3420 const struct powerpc_operand *op;
3421 op = &powerpc_operands[*optr];
3422
3423 ++total;
3424
3425 if ((op->flags & PPC_OPERAND_OPTIONAL) != 0
3426 && !((op->flags & PPC_OPERAND_OPTIONAL32) != 0
3427 && ppc_obj64))
3428 ++num_optional_operands;
3429
3430 if (s != NULL && *s != '\0')
3431 {
3432 ++provided;
3433
3434 /* Look for the start of the next operand. */
3435 if ((op->flags & PPC_OPERAND_PARENS) != 0)
3436 s = strpbrk (s, "(,");
3437 else
3438 s = strchr (s, ',');
3439
3440 if (s != NULL)
3441 ++s;
3442 }
3443 }
3444 omitted = total - provided;
3445 num_optional_provided = num_optional_operands - omitted;
3446 }
3447 if (--num_optional_provided < 0)
3448 {
3449 uint64_t val = ppc_optional_operand_value (operand, insn, ppc_cpu,
3450 num_optional_provided);
3451 if (operand->insert)
3452 {
3453 insn = (*operand->insert) (insn, val, ppc_cpu, &errmsg);
3454 if (errmsg != (const char *) NULL)
3455 as_bad ("%s", errmsg);
3456 }
3457 else if (operand->shift >= 0)
3458 insn |= (val & operand->bitm) << operand->shift;
3459 else
3460 insn |= (val & operand->bitm) >> -operand->shift;
3461
3462 if ((operand->flags & PPC_OPERAND_NEXT) != 0)
3463 next_opindex = *opindex_ptr + 1;
3464 continue;
3465 }
3466 }
3467
3468 /* Gather the operand. */
3469 hold = input_line_pointer;
3470 input_line_pointer = str;
3471 cr_operand = ((operand->flags & PPC_OPERAND_CR_BIT) != 0
3472 || (operand->flags & PPC_OPERAND_CR_REG) != 0);
3473 expression (&ex);
3474 cr_operand = false;
3475 str = input_line_pointer;
3476 input_line_pointer = hold;
3477
3478 resolve_register (&ex);
3479
3480 if (ex.X_op == O_illegal)
3481 as_bad (_("illegal operand"));
3482 else if (ex.X_op == O_absent)
3483 as_bad (_("missing operand"));
3484 else if (ex.X_op == O_register)
3485 {
3486 if ((ex.X_md
3487 & ~operand->flags
3488 & (PPC_OPERAND_GPR | PPC_OPERAND_FPR | PPC_OPERAND_VR
3489 | PPC_OPERAND_VSR | PPC_OPERAND_CR_BIT | PPC_OPERAND_CR_REG
3490 | PPC_OPERAND_SPR | PPC_OPERAND_GQR | PPC_OPERAND_ACC
3491 | PPC_OPERAND_DMR)) != 0
3492 && !((ex.X_md & PPC_OPERAND_GPR) != 0
3493 && ex.X_add_number != 0
3494 && (operand->flags & PPC_OPERAND_GPR_0) != 0))
3495 as_warn (_("invalid register expression"));
3496 insn = ppc_insert_operand (insn, operand, ex.X_add_number,
3497 ppc_cpu, (char *) NULL, 0);
3498 }
3499 else if (ex.X_op == O_constant
3500 || (ex.X_op == O_big && ex.X_add_number > 0))
3501 {
3502 uint64_t val;
3503 if (ex.X_op == O_constant)
3504 {
3505 val = ex.X_add_number;
3506 if (sizeof (ex.X_add_number) < sizeof (val)
3507 && (ex.X_add_number < 0) != ex.X_extrabit)
3508 val = val ^ ((addressT) -1 ^ (uint64_t) -1);
3509 }
3510 else
3511 val = generic_bignum_to_int64 ();
3512 #ifdef OBJ_ELF
3513 /* Allow @HA, @L, @H on constants. */
3514 char *orig_str = str;
3515 bfd_reloc_code_real_type reloc = ppc_elf_suffix (&str, &ex);
3516
3517 if (ex.X_op == O_constant)
3518 {
3519 val = ex.X_add_number;
3520 if (sizeof (ex.X_add_number) < sizeof (val)
3521 && (ex.X_add_number < 0) != ex.X_extrabit)
3522 val = val ^ ((addressT) -1 ^ (uint64_t) -1);
3523 }
3524 if (reloc != BFD_RELOC_NONE)
3525 switch (reloc)
3526 {
3527 default:
3528 str = orig_str;
3529 break;
3530
3531 case BFD_RELOC_LO16:
3532 val &= 0xffff;
3533 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
3534 val = SEX16 (val);
3535 break;
3536
3537 case BFD_RELOC_HI16:
3538 if (REPORT_OVERFLOW_HI && ppc_obj64)
3539 {
3540 /* PowerPC64 @h is tested for overflow. */
3541 val = val >> 16;
3542 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
3543 {
3544 uint64_t sign = (((uint64_t) -1 >> 16) + 1) >> 1;
3545 val = (val ^ sign) - sign;
3546 }
3547 break;
3548 }
3549 /* Fallthru */
3550
3551 case BFD_RELOC_PPC64_ADDR16_HIGH:
3552 val = PPC_HI (val);
3553 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
3554 val = SEX16 (val);
3555 break;
3556
3557 case BFD_RELOC_HI16_S:
3558 if (REPORT_OVERFLOW_HI && ppc_obj64)
3559 {
3560 /* PowerPC64 @ha is tested for overflow. */
3561 val = (val + 0x8000) >> 16;
3562 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
3563 {
3564 uint64_t sign = (((uint64_t) -1 >> 16) + 1) >> 1;
3565 val = (val ^ sign) - sign;
3566 }
3567 break;
3568 }
3569 /* Fallthru */
3570
3571 case BFD_RELOC_PPC64_ADDR16_HIGHA:
3572 val = PPC_HA (val);
3573 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
3574 val = SEX16 (val);
3575 break;
3576
3577 case BFD_RELOC_PPC64_HIGHER:
3578 val = PPC_HIGHER (val);
3579 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
3580 val = SEX16 (val);
3581 break;
3582
3583 case BFD_RELOC_PPC64_HIGHER_S:
3584 val = PPC_HIGHERA (val);
3585 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
3586 val = SEX16 (val);
3587 break;
3588
3589 case BFD_RELOC_PPC64_HIGHEST:
3590 val = PPC_HIGHEST (val);
3591 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
3592 val = SEX16 (val);
3593 break;
3594
3595 case BFD_RELOC_PPC64_HIGHEST_S:
3596 val = PPC_HIGHESTA (val);
3597 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
3598 val = SEX16 (val);
3599 break;
3600 }
3601 #endif /* OBJ_ELF */
3602 insn = ppc_insert_operand (insn, operand, val, ppc_cpu, NULL, 0);
3603 }
3604 else
3605 {
3606 bfd_reloc_code_real_type reloc = BFD_RELOC_NONE;
3607 #ifdef OBJ_ELF
3608 /* Look for a __tls_get_addr arg using the insane old syntax. */
3609 if (ex.X_op == O_symbol && *str == '(' && fc < MAX_INSN_FIXUPS
3610 && parse_tls_arg (&str, &ex, &fixups[fc]))
3611 {
3612 fixups[fc].opindex = *opindex_ptr;
3613 ++fc;
3614 }
3615
3616 if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_NONE)
3617 {
3618 /* If VLE-mode convert LO/HI/HA relocations. */
3619 if (opcode->flags & PPC_OPCODE_VLE)
3620 {
3621 uint64_t tmp_insn = insn & opcode->mask;
3622
3623 int use_a_reloc = (tmp_insn == E_OR2I_INSN
3624 || tmp_insn == E_AND2I_DOT_INSN
3625 || tmp_insn == E_OR2IS_INSN
3626 || tmp_insn == E_LI_INSN
3627 || tmp_insn == E_LIS_INSN
3628 || tmp_insn == E_AND2IS_DOT_INSN);
3629
3630
3631 int use_d_reloc = (tmp_insn == E_ADD2I_DOT_INSN
3632 || tmp_insn == E_ADD2IS_INSN
3633 || tmp_insn == E_CMP16I_INSN
3634 || tmp_insn == E_MULL2I_INSN
3635 || tmp_insn == E_CMPL16I_INSN
3636 || tmp_insn == E_CMPH16I_INSN
3637 || tmp_insn == E_CMPHL16I_INSN);
3638
3639 switch (reloc)
3640 {
3641 default:
3642 break;
3643
3644 case BFD_RELOC_PPC_EMB_SDA21:
3645 reloc = BFD_RELOC_PPC_VLE_SDA21;
3646 break;
3647
3648 case BFD_RELOC_LO16:
3649 if (use_d_reloc)
3650 reloc = BFD_RELOC_PPC_VLE_LO16D;
3651 else if (use_a_reloc)
3652 reloc = BFD_RELOC_PPC_VLE_LO16A;
3653 break;
3654
3655 case BFD_RELOC_HI16:
3656 if (use_d_reloc)
3657 reloc = BFD_RELOC_PPC_VLE_HI16D;
3658 else if (use_a_reloc)
3659 reloc = BFD_RELOC_PPC_VLE_HI16A;
3660 break;
3661
3662 case BFD_RELOC_HI16_S:
3663 if (use_d_reloc)
3664 reloc = BFD_RELOC_PPC_VLE_HA16D;
3665 else if (use_a_reloc)
3666 reloc = BFD_RELOC_PPC_VLE_HA16A;
3667 break;
3668
3669 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
3670 if (use_d_reloc)
3671 reloc = BFD_RELOC_PPC_VLE_SDAREL_LO16D;
3672 break;
3673
3674 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
3675 if (use_d_reloc)
3676 reloc = BFD_RELOC_PPC_VLE_SDAREL_HI16D;
3677 break;
3678
3679 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
3680 if (use_d_reloc)
3681 reloc = BFD_RELOC_PPC_VLE_SDAREL_HA16D;
3682 break;
3683 }
3684 }
3685
3686 /* TLS and other tweaks. */
3687 switch (reloc)
3688 {
3689 default:
3690 break;
3691
3692 case BFD_RELOC_PPC_TLS:
3693 case BFD_RELOC_PPC64_TLS_PCREL:
3694 if (!_bfd_elf_ppc_at_tls_transform (opcode->opcode, 0))
3695 as_bad (_("@tls may not be used with \"%s\" operands"),
3696 opcode->name);
3697 else if (operand->shift != 11)
3698 as_bad (_("@tls may only be used in last operand"));
3699 else
3700 insn = ppc_insert_operand (insn, operand,
3701 ppc_obj64 ? 13 : 2,
3702 ppc_cpu, (char *) NULL, 0);
3703 break;
3704
3705 /* We'll only use the 32 (or 64) bit form of these relocations
3706 in constants. Instructions get the 16 or 34 bit form. */
3707 case BFD_RELOC_PPC_DTPREL:
3708 if (operand->bitm == 0x3ffffffffULL)
3709 reloc = BFD_RELOC_PPC64_DTPREL34;
3710 else
3711 reloc = BFD_RELOC_PPC_DTPREL16;
3712 break;
3713
3714 case BFD_RELOC_PPC_TPREL:
3715 if (operand->bitm == 0x3ffffffffULL)
3716 reloc = BFD_RELOC_PPC64_TPREL34;
3717 else
3718 reloc = BFD_RELOC_PPC_TPREL16;
3719 break;
3720
3721 case BFD_RELOC_PPC64_PCREL34:
3722 if (operand->bitm == 0xfffffffULL)
3723 {
3724 reloc = BFD_RELOC_PPC64_PCREL28;
3725 break;
3726 }
3727 /* Fall through. */
3728 case BFD_RELOC_PPC64_GOT_PCREL34:
3729 case BFD_RELOC_PPC64_PLT_PCREL34:
3730 case BFD_RELOC_PPC64_GOT_TLSGD_PCREL34:
3731 case BFD_RELOC_PPC64_GOT_TLSLD_PCREL34:
3732 case BFD_RELOC_PPC64_GOT_TPREL_PCREL34:
3733 case BFD_RELOC_PPC64_GOT_DTPREL_PCREL34:
3734 if (operand->bitm != 0x3ffffffffULL
3735 || (operand->flags & PPC_OPERAND_NEGATIVE) != 0)
3736 as_warn (_("%s unsupported on this instruction"), "@pcrel");
3737 break;
3738
3739 case BFD_RELOC_LO16:
3740 if (operand->bitm == 0x3ffffffffULL
3741 && (operand->flags & PPC_OPERAND_NEGATIVE) == 0)
3742 reloc = BFD_RELOC_PPC64_D34_LO;
3743 else if ((operand->bitm | 0xf) != 0xffff
3744 || operand->shift != 0
3745 || (operand->flags & PPC_OPERAND_NEGATIVE) != 0)
3746 as_warn (_("%s unsupported on this instruction"), "@l");
3747 break;
3748
3749 case BFD_RELOC_HI16:
3750 if (operand->bitm == 0x3ffffffffULL
3751 && (operand->flags & PPC_OPERAND_NEGATIVE) == 0)
3752 reloc = BFD_RELOC_PPC64_D34_HI30;
3753 else if (operand->bitm != 0xffff
3754 || operand->shift != 0
3755 || (operand->flags & PPC_OPERAND_NEGATIVE) != 0)
3756 as_warn (_("%s unsupported on this instruction"), "@h");
3757 break;
3758
3759 case BFD_RELOC_HI16_S:
3760 if (operand->bitm == 0x3ffffffffULL
3761 && (operand->flags & PPC_OPERAND_NEGATIVE) == 0)
3762 reloc = BFD_RELOC_PPC64_D34_HA30;
3763 else if (operand->bitm == 0xffff
3764 && operand->shift == (int) PPC_OPSHIFT_INV
3765 && opcode->opcode == (19 << 26) + (2 << 1))
3766 /* addpcis. */
3767 reloc = BFD_RELOC_PPC_16DX_HA;
3768 else if (operand->bitm != 0xffff
3769 || operand->shift != 0
3770 || (operand->flags & PPC_OPERAND_NEGATIVE) != 0)
3771 as_warn (_("%s unsupported on this instruction"), "@ha");
3772 }
3773 }
3774 #endif /* OBJ_ELF */
3775 #ifdef OBJ_XCOFF
3776 reloc = ppc_xcoff_suffix (&str);
3777 #endif /* OBJ_XCOFF */
3778
3779 if (reloc != BFD_RELOC_NONE)
3780 ;
3781 /* Determine a BFD reloc value based on the operand information.
3782 We are only prepared to turn a few of the operands into
3783 relocs. */
3784 else if ((operand->flags & (PPC_OPERAND_RELATIVE
3785 | PPC_OPERAND_ABSOLUTE)) != 0
3786 && operand->bitm == 0x3fffffc
3787 && operand->shift == 0)
3788 reloc = BFD_RELOC_PPC_B26;
3789 else if ((operand->flags & (PPC_OPERAND_RELATIVE
3790 | PPC_OPERAND_ABSOLUTE)) != 0
3791 && operand->bitm == 0xfffc
3792 && operand->shift == 0)
3793 reloc = BFD_RELOC_PPC_B16;
3794 else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
3795 && operand->bitm == 0x1fe
3796 && operand->shift == -1)
3797 reloc = BFD_RELOC_PPC_VLE_REL8;
3798 else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
3799 && operand->bitm == 0xfffe
3800 && operand->shift == 0)
3801 reloc = BFD_RELOC_PPC_VLE_REL15;
3802 else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
3803 && operand->bitm == 0x1fffffe
3804 && operand->shift == 0)
3805 reloc = BFD_RELOC_PPC_VLE_REL24;
3806 else if ((operand->flags & PPC_OPERAND_NEGATIVE) == 0
3807 && (operand->bitm & 0xfff0) == 0xfff0
3808 && operand->shift == 0)
3809 {
3810 reloc = BFD_RELOC_16;
3811 #if defined OBJ_XCOFF || defined OBJ_ELF
3812 /* Note: the symbol may be not yet defined. */
3813 if ((operand->flags & PPC_OPERAND_PARENS) != 0
3814 && ppc_is_toc_sym (ex.X_add_symbol))
3815 {
3816 reloc = BFD_RELOC_PPC_TOC16;
3817 #ifdef OBJ_ELF
3818 as_warn (_("assuming %s on symbol"),
3819 ppc_obj64 ? "@toc" : "@xgot");
3820 #endif
3821 }
3822 #endif
3823 }
3824 else if (operand->bitm == 0x3ffffffffULL)
3825 reloc = BFD_RELOC_PPC64_D34;
3826 else if (operand->bitm == 0xfffffffULL)
3827 reloc = BFD_RELOC_PPC64_D28;
3828
3829 /* For the absolute forms of branches, convert the PC
3830 relative form back into the absolute. */
3831 if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0)
3832 {
3833 switch (reloc)
3834 {
3835 case BFD_RELOC_PPC_B26:
3836 reloc = BFD_RELOC_PPC_BA26;
3837 break;
3838 case BFD_RELOC_PPC_B16:
3839 reloc = BFD_RELOC_PPC_BA16;
3840 break;
3841 #ifdef OBJ_ELF
3842 case BFD_RELOC_PPC_B16_BRTAKEN:
3843 reloc = BFD_RELOC_PPC_BA16_BRTAKEN;
3844 break;
3845 case BFD_RELOC_PPC_B16_BRNTAKEN:
3846 reloc = BFD_RELOC_PPC_BA16_BRNTAKEN;
3847 break;
3848 #endif
3849 default:
3850 break;
3851 }
3852 }
3853
3854 #ifdef OBJ_ELF
3855 switch (reloc)
3856 {
3857 case BFD_RELOC_PPC_TOC16:
3858 toc_reloc_types |= has_small_toc_reloc;
3859 break;
3860 case BFD_RELOC_PPC64_TOC16_LO:
3861 case BFD_RELOC_PPC64_TOC16_HI:
3862 case BFD_RELOC_PPC64_TOC16_HA:
3863 toc_reloc_types |= has_large_toc_reloc;
3864 break;
3865 default:
3866 break;
3867 }
3868
3869 if (ppc_obj64
3870 && (operand->flags & (PPC_OPERAND_DS | PPC_OPERAND_DQ)) != 0)
3871 {
3872 switch (reloc)
3873 {
3874 case BFD_RELOC_16:
3875 reloc = BFD_RELOC_PPC64_ADDR16_DS;
3876 break;
3877
3878 case BFD_RELOC_LO16:
3879 reloc = BFD_RELOC_PPC64_ADDR16_LO_DS;
3880 break;
3881
3882 case BFD_RELOC_16_GOTOFF:
3883 reloc = BFD_RELOC_PPC64_GOT16_DS;
3884 break;
3885
3886 case BFD_RELOC_LO16_GOTOFF:
3887 reloc = BFD_RELOC_PPC64_GOT16_LO_DS;
3888 break;
3889
3890 case BFD_RELOC_LO16_PLTOFF:
3891 reloc = BFD_RELOC_PPC64_PLT16_LO_DS;
3892 break;
3893
3894 case BFD_RELOC_16_BASEREL:
3895 reloc = BFD_RELOC_PPC64_SECTOFF_DS;
3896 break;
3897
3898 case BFD_RELOC_LO16_BASEREL:
3899 reloc = BFD_RELOC_PPC64_SECTOFF_LO_DS;
3900 break;
3901
3902 case BFD_RELOC_PPC_TOC16:
3903 reloc = BFD_RELOC_PPC64_TOC16_DS;
3904 break;
3905
3906 case BFD_RELOC_PPC64_TOC16_LO:
3907 reloc = BFD_RELOC_PPC64_TOC16_LO_DS;
3908 break;
3909
3910 case BFD_RELOC_PPC64_PLTGOT16:
3911 reloc = BFD_RELOC_PPC64_PLTGOT16_DS;
3912 break;
3913
3914 case BFD_RELOC_PPC64_PLTGOT16_LO:
3915 reloc = BFD_RELOC_PPC64_PLTGOT16_LO_DS;
3916 break;
3917
3918 case BFD_RELOC_PPC_DTPREL16:
3919 reloc = BFD_RELOC_PPC64_DTPREL16_DS;
3920 break;
3921
3922 case BFD_RELOC_PPC_DTPREL16_LO:
3923 reloc = BFD_RELOC_PPC64_DTPREL16_LO_DS;
3924 break;
3925
3926 case BFD_RELOC_PPC_TPREL16:
3927 reloc = BFD_RELOC_PPC64_TPREL16_DS;
3928 break;
3929
3930 case BFD_RELOC_PPC_TPREL16_LO:
3931 reloc = BFD_RELOC_PPC64_TPREL16_LO_DS;
3932 break;
3933
3934 case BFD_RELOC_PPC_GOT_DTPREL16:
3935 case BFD_RELOC_PPC_GOT_DTPREL16_LO:
3936 case BFD_RELOC_PPC_GOT_TPREL16:
3937 case BFD_RELOC_PPC_GOT_TPREL16_LO:
3938 break;
3939
3940 default:
3941 as_bad (_("unsupported relocation for DS offset field"));
3942 break;
3943 }
3944 }
3945
3946 /* Look for a __tls_get_addr arg after any __tls_get_addr
3947 modifiers like @plt. This fixup must be emitted before
3948 the usual call fixup. */
3949 if (ex.X_op == O_symbol && *str == '(' && fc < MAX_INSN_FIXUPS
3950 && parse_tls_arg (&str, &ex, &fixups[fc]))
3951 {
3952 fixups[fc].opindex = *opindex_ptr;
3953 ++fc;
3954 }
3955 #endif
3956
3957 /* We need to generate a fixup for this expression. */
3958 if (fc >= MAX_INSN_FIXUPS)
3959 as_fatal (_("too many fixups"));
3960 fixups[fc].exp = ex;
3961 fixups[fc].opindex = *opindex_ptr;
3962 fixups[fc].reloc = reloc;
3963 ++fc;
3964 }
3965
3966 if (need_paren)
3967 {
3968 endc = ')';
3969 need_paren = 0;
3970 /* If expecting more operands, then we want to see "),". */
3971 if (*str == endc && opindex_ptr[1] != 0)
3972 {
3973 do
3974 ++str;
3975 while (ISSPACE (*str));
3976 endc = ',';
3977 }
3978 }
3979 else if ((operand->flags & PPC_OPERAND_PARENS) != 0)
3980 endc = '(';
3981 else
3982 endc = ',';
3983
3984 /* The call to expression should have advanced str past any
3985 whitespace. */
3986 if (*str == endc)
3987 {
3988 ++str;
3989 if (endc == '(')
3990 need_paren = 1;
3991 }
3992 else if (*str != '\0')
3993 {
3994 as_bad (_("syntax error; found `%c', expected `%c'"), *str, endc);
3995 break;
3996 }
3997 else if (endc == ')')
3998 {
3999 as_bad (_("syntax error; end of line, expected `%c'"), endc);
4000 break;
4001 }
4002 }
4003
4004 while (ISSPACE (*str))
4005 ++str;
4006
4007 if (*str != '\0')
4008 as_bad (_("junk at end of line: `%s'"), str);
4009
4010 #ifdef OBJ_ELF
4011 /* Do we need/want an APUinfo section? */
4012 if ((ppc_cpu & (PPC_OPCODE_E500 | PPC_OPCODE_E500MC | PPC_OPCODE_VLE)) != 0
4013 && !ppc_obj64)
4014 {
4015 /* These are all version "1". */
4016 if (opcode->flags & PPC_OPCODE_SPE)
4017 ppc_apuinfo_section_add (PPC_APUINFO_SPE, 1);
4018 if (opcode->flags & PPC_OPCODE_ISEL)
4019 ppc_apuinfo_section_add (PPC_APUINFO_ISEL, 1);
4020 if (opcode->flags & PPC_OPCODE_EFS)
4021 ppc_apuinfo_section_add (PPC_APUINFO_EFS, 1);
4022 if (opcode->flags & PPC_OPCODE_BRLOCK)
4023 ppc_apuinfo_section_add (PPC_APUINFO_BRLOCK, 1);
4024 if (opcode->flags & PPC_OPCODE_PMR)
4025 ppc_apuinfo_section_add (PPC_APUINFO_PMR, 1);
4026 if (opcode->flags & PPC_OPCODE_CACHELCK)
4027 ppc_apuinfo_section_add (PPC_APUINFO_CACHELCK, 1);
4028 if (opcode->flags & PPC_OPCODE_RFMCI)
4029 ppc_apuinfo_section_add (PPC_APUINFO_RFMCI, 1);
4030 /* Only set the VLE flag if the instruction has been pulled via
4031 the VLE instruction set. This way the flag is guaranteed to
4032 be set for VLE-only instructions or for VLE-only processors,
4033 however it'll remain clear for dual-mode instructions on
4034 dual-mode and, more importantly, standard-mode processors. */
4035 if (ppc_cpu & opcode->flags & PPC_OPCODE_VLE)
4036 {
4037 ppc_apuinfo_section_add (PPC_APUINFO_VLE, 1);
4038 if (elf_section_data (now_seg) != NULL)
4039 elf_section_data (now_seg)->this_hdr.sh_flags |= SHF_PPC_VLE;
4040 }
4041 }
4042 #endif
4043
4044 /* Write out the instruction. */
4045
4046 addr_mask = 3;
4047 if ((ppc_cpu & PPC_OPCODE_VLE) != 0)
4048 /* All instructions can start on a 2 byte boundary for VLE. */
4049 addr_mask = 1;
4050
4051 if (frag_now->insn_addr != addr_mask)
4052 {
4053 /* Don't emit instructions to a frag started for data, or for a
4054 CPU differing in VLE mode. Data is allowed to be misaligned,
4055 and it's possible to start a new frag in the middle of
4056 misaligned data. */
4057 frag_wane (frag_now);
4058 frag_new (0);
4059 }
4060
4061 /* Check that insns within the frag are aligned. ppc_frag_check
4062 will ensure that the frag start address is aligned. */
4063 if ((frag_now_fix () & addr_mask) != 0)
4064 as_bad (_("instruction address is not a multiple of %d"), addr_mask + 1);
4065
4066 /* Differentiate between two, four, and eight byte insns. */
4067 insn_length = 4;
4068 if ((ppc_cpu & PPC_OPCODE_VLE) != 0 && PPC_OP_SE_VLE (insn))
4069 insn_length = 2;
4070 else if (PPC_PREFIX_P (insn))
4071 {
4072 struct insn_label_list *l;
4073
4074 insn_length = 8;
4075
4076 /* 8-byte prefix instructions are not allowed to cross 64-byte
4077 boundaries. */
4078 frag_align_code (6, 4);
4079 record_alignment (now_seg, 6);
4080 #ifdef OBJ_XCOFF
4081 /* Update alignment of the containing csect. */
4082 if (symbol_get_tc (ppc_current_csect)->align < 6)
4083 symbol_get_tc (ppc_current_csect)->align = 6;
4084 #endif
4085
4086 /* Update "dot" in any expressions used by this instruction, and
4087 a label attached to the instruction. By "attached" we mean
4088 on the same source line as the instruction and without any
4089 intervening semicolons. */
4090 dot_value = frag_now_fix ();
4091 dot_frag = frag_now;
4092 for (l = insn_labels; l != NULL; l = l->next)
4093 {
4094 symbol_set_frag (l->label, dot_frag);
4095 S_SET_VALUE (l->label, dot_value);
4096 }
4097 }
4098
4099 ppc_clear_labels ();
4100
4101 f = frag_more (insn_length);
4102 frag_now->insn_addr = addr_mask;
4103
4104 /* The prefix part of an 8-byte instruction always occupies the lower
4105 addressed word in a doubleword, regardless of endianness. */
4106 if (insn_length == 8
4107 && (sizeof (insn) > sizeof (valueT) || !target_big_endian))
4108 {
4109 md_number_to_chars (f, PPC_GET_PREFIX (insn), 4);
4110 md_number_to_chars (f + 4, PPC_GET_SUFFIX (insn), 4);
4111 }
4112 else
4113 md_number_to_chars (f, insn, insn_length);
4114
4115 last_insn = insn;
4116 last_seg = now_seg;
4117 last_subseg = now_subseg;
4118
4119 #ifdef OBJ_ELF
4120 dwarf2_emit_insn (insn_length);
4121 #endif
4122
4123 /* Create any fixups. */
4124 for (i = 0; i < fc; i++)
4125 {
4126 fixS *fixP;
4127 if (fixups[i].reloc != BFD_RELOC_NONE)
4128 {
4129 bool pcrel;
4130 unsigned int size = fixup_size (fixups[i].reloc, &pcrel);
4131 int offset = target_big_endian ? (insn_length - size) : 0;
4132
4133 fixP = fix_new_exp (frag_now,
4134 f - frag_now->fr_literal + offset,
4135 size,
4136 &fixups[i].exp,
4137 pcrel,
4138 fixups[i].reloc);
4139 }
4140 else
4141 {
4142 const struct powerpc_operand *operand;
4143
4144 operand = &powerpc_operands[fixups[i].opindex];
4145 fixP = fix_new_exp (frag_now,
4146 f - frag_now->fr_literal,
4147 insn_length,
4148 &fixups[i].exp,
4149 (operand->flags & PPC_OPERAND_RELATIVE) != 0,
4150 BFD_RELOC_NONE);
4151 }
4152 fixP->fx_pcrel_adjust = fixups[i].opindex;
4153 }
4154 }
4155
4156 #ifdef OBJ_ELF
4157 /* For ELF, add support for SHT_ORDERED. */
4158
4159 int
ppc_section_type(char * str,size_t len)4160 ppc_section_type (char *str, size_t len)
4161 {
4162 if (len == 7 && startswith (str, "ordered"))
4163 return SHT_ORDERED;
4164
4165 return -1;
4166 }
4167
4168 int
ppc_section_flags(flagword flags,bfd_vma attr ATTRIBUTE_UNUSED,int type)4169 ppc_section_flags (flagword flags, bfd_vma attr ATTRIBUTE_UNUSED, int type)
4170 {
4171 if (type == SHT_ORDERED)
4172 flags |= SEC_ALLOC | SEC_LOAD | SEC_SORT_ENTRIES;
4173
4174 return flags;
4175 }
4176
4177 bfd_vma
ppc_elf_section_letter(int letter,const char ** ptrmsg)4178 ppc_elf_section_letter (int letter, const char **ptrmsg)
4179 {
4180 if (letter == 'v')
4181 return SHF_PPC_VLE;
4182
4183 *ptrmsg = _("bad .section directive: want a,e,v,w,x,M,S,G,T in string");
4184 return -1;
4185 }
4186 #endif /* OBJ_ELF */
4187
4188
4189 /* Pseudo-op handling. */
4190
4191 /* The .byte pseudo-op. This is similar to the normal .byte
4192 pseudo-op, but it can also take a single ASCII string. */
4193
4194 static void
ppc_byte(int ignore ATTRIBUTE_UNUSED)4195 ppc_byte (int ignore ATTRIBUTE_UNUSED)
4196 {
4197 int count = 0;
4198
4199 if (*input_line_pointer != '\"')
4200 {
4201 cons (1);
4202 return;
4203 }
4204
4205 /* Gather characters. A real double quote is doubled. Unusual
4206 characters are not permitted. */
4207 ++input_line_pointer;
4208 while (1)
4209 {
4210 char c;
4211
4212 c = *input_line_pointer++;
4213
4214 if (c == '\"')
4215 {
4216 if (*input_line_pointer != '\"')
4217 break;
4218 ++input_line_pointer;
4219 }
4220
4221 FRAG_APPEND_1_CHAR (c);
4222 ++count;
4223 }
4224
4225 if (warn_476 && count != 0 && (now_seg->flags & SEC_CODE) != 0)
4226 as_warn (_("data in executable section"));
4227 demand_empty_rest_of_line ();
4228 }
4229
4230 #ifdef OBJ_XCOFF
4231
4232 /* XCOFF specific pseudo-op handling. */
4233
4234 /* This is set if we are creating a .stabx symbol, since we don't want
4235 to handle symbol suffixes for such symbols. */
4236 static bool ppc_stab_symbol;
4237
4238 /* Retrieve the visiblity input for pseudo-ops having ones. */
4239 static unsigned short
ppc_xcoff_get_visibility(void)4240 ppc_xcoff_get_visibility (void) {
4241 SKIP_WHITESPACE();
4242
4243 if (startswith (input_line_pointer, "exported"))
4244 {
4245 input_line_pointer += 8;
4246 return SYM_V_EXPORTED;
4247 }
4248
4249 if (startswith (input_line_pointer, "hidden"))
4250 {
4251 input_line_pointer += 6;
4252 return SYM_V_HIDDEN;
4253 }
4254
4255 if (startswith (input_line_pointer, "internal"))
4256 {
4257 input_line_pointer += 8;
4258 return SYM_V_INTERNAL;
4259 }
4260
4261 if (startswith (input_line_pointer, "protected"))
4262 {
4263 input_line_pointer += 9;
4264 return SYM_V_PROTECTED;
4265 }
4266
4267 return 0;
4268 }
4269
4270 /* Retrieve visiblity using GNU syntax. */
ppc_GNU_visibility(int visibility)4271 static void ppc_GNU_visibility (int visibility) {
4272 int c;
4273 char *name;
4274 symbolS *symbolP;
4275 coff_symbol_type *coffsym;
4276
4277 do
4278 {
4279 if ((name = read_symbol_name ()) == NULL)
4280 break;
4281 symbolP = symbol_find_or_make (name);
4282 free (name);
4283 coffsym = coffsymbol (symbol_get_bfdsym (symbolP));
4284
4285 coffsym->native->u.syment.n_type &= ~SYM_V_MASK;
4286 coffsym->native->u.syment.n_type |= visibility;
4287
4288 c = *input_line_pointer;
4289 if (c == ',')
4290 {
4291 input_line_pointer ++;
4292
4293 SKIP_WHITESPACE ();
4294
4295 if (*input_line_pointer == '\n')
4296 c = '\n';
4297 }
4298 }
4299 while (c == ',');
4300
4301 demand_empty_rest_of_line ();
4302 }
4303
4304 /* The .comm and .lcomm pseudo-ops for XCOFF. XCOFF puts common
4305 symbols in the .bss segment as though they were local common
4306 symbols, and uses a different smclas. The native Aix 4.3.3 assembler
4307 aligns .comm and .lcomm to 4 bytes.
4308 Symbols having a XMC_UL storage class are uninialized thread-local
4309 data. */
4310
4311 static void
ppc_comm(int lcomm)4312 ppc_comm (int lcomm)
4313 {
4314 asection *current_seg = now_seg;
4315 subsegT current_subseg = now_subseg;
4316 char *name;
4317 char endc;
4318 char *end_name;
4319 offsetT size;
4320 offsetT align;
4321 symbolS *lcomm_sym = NULL;
4322 symbolS *sym;
4323 char *pfrag;
4324 unsigned short visibility = 0;
4325 struct ppc_xcoff_section *section;
4326
4327 endc = get_symbol_name (&name);
4328 end_name = input_line_pointer;
4329 (void) restore_line_pointer (endc);
4330
4331 if (*input_line_pointer != ',')
4332 {
4333 as_bad (_("missing size"));
4334 ignore_rest_of_line ();
4335 return;
4336 }
4337 ++input_line_pointer;
4338
4339 size = get_absolute_expression ();
4340 if (size < 0)
4341 {
4342 as_bad (_("negative size"));
4343 ignore_rest_of_line ();
4344 return;
4345 }
4346
4347 if (! lcomm)
4348 {
4349 /* The third argument to .comm is the alignment. */
4350 if (*input_line_pointer != ',')
4351 align = 2;
4352 else
4353 {
4354 ++input_line_pointer;
4355 align = get_absolute_expression ();
4356 if (align <= 0)
4357 {
4358 as_warn (_("ignoring bad alignment"));
4359 align = 2;
4360 }
4361
4362 /* The fourth argument to .comm is the visibility. */
4363 if (*input_line_pointer == ',')
4364 {
4365 input_line_pointer++;
4366 visibility = ppc_xcoff_get_visibility ();
4367 if (!visibility)
4368 {
4369 as_bad (_("Unknown visibility field in .comm"));
4370 ignore_rest_of_line ();
4371 return;
4372 }
4373 }
4374 }
4375 }
4376 else
4377 {
4378 char *lcomm_name;
4379 char lcomm_endc;
4380
4381 /* The third argument to .lcomm appears to be the real local
4382 common symbol to create. References to the symbol named in
4383 the first argument are turned into references to the third
4384 argument. */
4385 if (*input_line_pointer != ',')
4386 {
4387 as_bad (_("missing real symbol name"));
4388 ignore_rest_of_line ();
4389 return;
4390 }
4391 ++input_line_pointer;
4392
4393 lcomm_endc = get_symbol_name (&lcomm_name);
4394
4395 lcomm_sym = symbol_find_or_make (lcomm_name);
4396
4397 (void) restore_line_pointer (lcomm_endc);
4398
4399 /* The fourth argument to .lcomm is the alignment. */
4400 if (*input_line_pointer != ',')
4401 {
4402 if (size <= 4)
4403 align = 2;
4404 else
4405 align = 3;
4406 }
4407 else
4408 {
4409 ++input_line_pointer;
4410 align = get_absolute_expression ();
4411 if (align <= 0)
4412 {
4413 as_warn (_("ignoring bad alignment"));
4414 align = 2;
4415 }
4416 }
4417 }
4418
4419 *end_name = '\0';
4420 sym = symbol_find_or_make (name);
4421 *end_name = endc;
4422
4423 if (S_IS_DEFINED (sym)
4424 || S_GET_VALUE (sym) != 0)
4425 {
4426 as_bad (_("attempt to redefine symbol"));
4427 ignore_rest_of_line ();
4428 return;
4429 }
4430
4431 if (symbol_get_tc (sym)->symbol_class == XMC_UL
4432 || (lcomm && symbol_get_tc (lcomm_sym)->symbol_class == XMC_UL))
4433 {
4434 section = &ppc_xcoff_tbss_section;
4435 if (!ppc_xcoff_section_is_initialized (section))
4436 {
4437 ppc_init_xcoff_section (section, subseg_new (".tbss", 0));
4438 bfd_set_section_flags (section->segment,
4439 SEC_ALLOC | SEC_THREAD_LOCAL);
4440 seg_info (section->segment)->bss = 1;
4441 }
4442 }
4443 else
4444 section = &ppc_xcoff_bss_section;
4445
4446 record_alignment (section->segment, align);
4447
4448 if (! lcomm
4449 || ! S_IS_DEFINED (lcomm_sym))
4450 {
4451 symbolS *def_sym;
4452 offsetT def_size;
4453
4454 if (! lcomm)
4455 {
4456 def_sym = sym;
4457 def_size = size;
4458 S_SET_EXTERNAL (sym);
4459 }
4460 else
4461 {
4462 symbol_get_tc (lcomm_sym)->output = 1;
4463 def_sym = lcomm_sym;
4464 def_size = 0;
4465 }
4466
4467 subseg_set (section->segment, 1);
4468 frag_align (align, 0, 0);
4469
4470 symbol_set_frag (def_sym, frag_now);
4471 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, def_sym,
4472 def_size, (char *) NULL);
4473 *pfrag = 0;
4474 S_SET_SEGMENT (def_sym, section->segment);
4475 symbol_get_tc (def_sym)->align = align;
4476 }
4477 else if (lcomm)
4478 {
4479 /* Align the size of lcomm_sym. */
4480 symbol_get_frag (lcomm_sym)->fr_offset =
4481 ((symbol_get_frag (lcomm_sym)->fr_offset + (1 << align) - 1)
4482 &~ ((1 << align) - 1));
4483 if (align > symbol_get_tc (lcomm_sym)->align)
4484 symbol_get_tc (lcomm_sym)->align = align;
4485 }
4486
4487 if (lcomm)
4488 {
4489 /* Make sym an offset from lcomm_sym. */
4490 S_SET_SEGMENT (sym, section->segment);
4491 symbol_set_frag (sym, symbol_get_frag (lcomm_sym));
4492 S_SET_VALUE (sym, symbol_get_frag (lcomm_sym)->fr_offset);
4493 symbol_get_frag (lcomm_sym)->fr_offset += size;
4494 }
4495
4496 if (!lcomm && visibility)
4497 {
4498 /* Add visibility to .comm symbol. */
4499 coff_symbol_type *coffsym = coffsymbol (symbol_get_bfdsym (sym));
4500 coffsym->native->u.syment.n_type &= ~SYM_V_MASK;
4501 coffsym->native->u.syment.n_type |= visibility;
4502 }
4503
4504 subseg_set (current_seg, current_subseg);
4505
4506 demand_empty_rest_of_line ();
4507 }
4508
4509 /* The .csect pseudo-op. This switches us into a different
4510 subsegment. The first argument is a symbol whose value is the
4511 start of the .csect. In COFF, csect symbols get special aux
4512 entries defined by the x_csect field of union internal_auxent. The
4513 optional second argument is the alignment (the default is 2). */
4514
4515 static void
ppc_csect(int ignore ATTRIBUTE_UNUSED)4516 ppc_csect (int ignore ATTRIBUTE_UNUSED)
4517 {
4518 char *name;
4519 char endc;
4520 symbolS *sym;
4521 offsetT align;
4522
4523 endc = get_symbol_name (&name);
4524
4525 sym = symbol_find_or_make (name);
4526
4527 (void) restore_line_pointer (endc);
4528
4529 if (S_GET_NAME (sym)[0] == '\0')
4530 {
4531 /* An unnamed csect is assumed to be [PR]. */
4532 symbol_get_tc (sym)->symbol_class = XMC_PR;
4533 }
4534
4535 align = 2;
4536 if (*input_line_pointer == ',')
4537 {
4538 ++input_line_pointer;
4539 align = get_absolute_expression ();
4540 }
4541
4542 ppc_change_csect (sym, align);
4543
4544 demand_empty_rest_of_line ();
4545 }
4546
4547 /* Change to a different csect. */
4548
4549 static void
ppc_change_csect(symbolS * sym,offsetT align)4550 ppc_change_csect (symbolS *sym, offsetT align)
4551 {
4552 if (S_IS_DEFINED (sym))
4553 subseg_set (S_GET_SEGMENT (sym), symbol_get_tc (sym)->subseg);
4554 else
4555 {
4556 struct ppc_xcoff_section *section;
4557 int after_toc;
4558 int hold_chunksize;
4559 symbolS *list;
4560 int is_code;
4561 segT sec;
4562
4563 /* This is a new csect. We need to look at the symbol class to
4564 figure out whether it should go in the text section or the
4565 data section. */
4566 after_toc = 0;
4567 is_code = 0;
4568 switch (symbol_get_tc (sym)->symbol_class)
4569 {
4570 case XMC_PR:
4571 case XMC_RO:
4572 case XMC_DB:
4573 case XMC_GL:
4574 case XMC_XO:
4575 case XMC_SV:
4576 case XMC_TI:
4577 case XMC_TB:
4578 section = &ppc_xcoff_text_section;
4579 is_code = 1;
4580 break;
4581 case XMC_RW:
4582 case XMC_TC0:
4583 case XMC_TC:
4584 case XMC_TE:
4585 case XMC_DS:
4586 case XMC_UA:
4587 case XMC_UC:
4588 section = &ppc_xcoff_data_section;
4589 if (ppc_toc_csect != NULL
4590 && (symbol_get_tc (ppc_toc_csect)->subseg + 1
4591 == section->next_subsegment))
4592 after_toc = 1;
4593 break;
4594 case XMC_BS:
4595 section = &ppc_xcoff_bss_section;
4596 break;
4597 case XMC_TL:
4598 section = &ppc_xcoff_tdata_section;
4599 /* Create .tdata section if not yet done. */
4600 if (!ppc_xcoff_section_is_initialized (section))
4601 {
4602 ppc_init_xcoff_section (section, subseg_new (".tdata", 0));
4603 bfd_set_section_flags (section->segment, SEC_ALLOC
4604 | SEC_LOAD | SEC_RELOC | SEC_DATA
4605 | SEC_THREAD_LOCAL);
4606 }
4607 break;
4608 case XMC_UL:
4609 section = &ppc_xcoff_tbss_section;
4610 /* Create .tbss section if not yet done. */
4611 if (!ppc_xcoff_section_is_initialized (section))
4612 {
4613 ppc_init_xcoff_section (section, subseg_new (".tbss", 0));
4614 bfd_set_section_flags (section->segment, SEC_ALLOC |
4615 SEC_THREAD_LOCAL);
4616 seg_info (section->segment)->bss = 1;
4617 }
4618 break;
4619 default:
4620 abort ();
4621 }
4622
4623 S_SET_SEGMENT (sym, section->segment);
4624 symbol_get_tc (sym)->subseg = section->next_subsegment;
4625 ++section->next_subsegment;
4626
4627 /* We set the obstack chunk size to a small value before
4628 changing subsegments, so that we don't use a lot of memory
4629 space for what may be a small section. */
4630 hold_chunksize = chunksize;
4631 chunksize = 64;
4632
4633 sec = subseg_new (segment_name (S_GET_SEGMENT (sym)),
4634 symbol_get_tc (sym)->subseg);
4635
4636 chunksize = hold_chunksize;
4637
4638 if (after_toc)
4639 ppc_after_toc_frag = frag_now;
4640
4641 record_alignment (sec, align);
4642 if (is_code)
4643 frag_align_code (align, 0);
4644 else
4645 frag_align (align, 0, 0);
4646
4647 symbol_set_frag (sym, frag_now);
4648 S_SET_VALUE (sym, (valueT) frag_now_fix ());
4649
4650 symbol_get_tc (sym)->align = align;
4651 symbol_get_tc (sym)->output = 1;
4652 symbol_get_tc (sym)->within = sym;
4653
4654 for (list = section->csects;
4655 symbol_get_tc (list)->next != (symbolS *) NULL;
4656 list = symbol_get_tc (list)->next)
4657 ;
4658 symbol_get_tc (list)->next = sym;
4659
4660 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
4661 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
4662 &symbol_lastP);
4663 }
4664
4665 ppc_current_csect = sym;
4666 }
4667
4668 static void
ppc_change_debug_section(unsigned int idx,subsegT subseg)4669 ppc_change_debug_section (unsigned int idx, subsegT subseg)
4670 {
4671 segT sec;
4672 flagword oldflags;
4673 const struct xcoff_dwsect_name *dw = &xcoff_dwsect_names[idx];
4674
4675 sec = subseg_new (dw->xcoff_name, subseg);
4676 oldflags = bfd_section_flags (sec);
4677 if (oldflags == SEC_NO_FLAGS)
4678 {
4679 /* Just created section. */
4680 gas_assert (dw_sections[idx].sect == NULL);
4681
4682 bfd_set_section_flags (sec, SEC_DEBUGGING);
4683 bfd_set_section_alignment (sec, 0);
4684 dw_sections[idx].sect = sec;
4685 }
4686
4687 /* Not anymore in a csect. */
4688 ppc_current_csect = NULL;
4689 }
4690
4691 /* The .dwsect pseudo-op. Defines a DWARF section. Syntax is:
4692 .dwsect flag [, opt-label ]
4693 */
4694
4695 static void
ppc_dwsect(int ignore ATTRIBUTE_UNUSED)4696 ppc_dwsect (int ignore ATTRIBUTE_UNUSED)
4697 {
4698 valueT flag;
4699 symbolS *opt_label;
4700 const struct xcoff_dwsect_name *dw;
4701 struct dw_subsection *subseg;
4702 struct dw_section *dws;
4703 int i;
4704
4705 /* Find section. */
4706 flag = get_absolute_expression ();
4707 dw = NULL;
4708 for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++)
4709 if (xcoff_dwsect_names[i].flag == flag)
4710 {
4711 dw = &xcoff_dwsect_names[i];
4712 break;
4713 }
4714
4715 /* Parse opt-label. */
4716 if (*input_line_pointer == ',')
4717 {
4718 char *label;
4719 char c;
4720
4721 ++input_line_pointer;
4722
4723 c = get_symbol_name (&label);
4724 opt_label = symbol_find_or_make (label);
4725 (void) restore_line_pointer (c);
4726 }
4727 else
4728 opt_label = NULL;
4729
4730 demand_empty_rest_of_line ();
4731
4732 /* Return now in case of unknown subsection. */
4733 if (dw == NULL)
4734 {
4735 as_bad (_("no known dwarf XCOFF section for flag 0x%08x\n"),
4736 (unsigned)flag);
4737 return;
4738 }
4739
4740 /* Find the subsection. */
4741 dws = &dw_sections[i];
4742 subseg = NULL;
4743 if (opt_label != NULL && S_IS_DEFINED (opt_label))
4744 {
4745 /* Sanity check (note that in theory S_GET_SEGMENT mustn't be null). */
4746 if (dws->sect == NULL || S_GET_SEGMENT (opt_label) != dws->sect)
4747 {
4748 as_bad (_("label %s was not defined in this dwarf section"),
4749 S_GET_NAME (opt_label));
4750 subseg = dws->anon_subseg;
4751 opt_label = NULL;
4752 }
4753 else
4754 subseg = symbol_get_tc (opt_label)->u.dw;
4755 }
4756
4757 if (subseg != NULL)
4758 {
4759 /* Switch to the subsection. */
4760 ppc_change_debug_section (i, subseg->subseg);
4761 }
4762 else
4763 {
4764 /* Create a new dw subsection. */
4765 subseg = XCNEW (struct dw_subsection);
4766
4767 if (opt_label == NULL)
4768 {
4769 /* The anonymous one. */
4770 subseg->subseg = 0;
4771 subseg->link = NULL;
4772 dws->anon_subseg = subseg;
4773 }
4774 else
4775 {
4776 /* A named one. */
4777 if (dws->list_subseg != NULL)
4778 subseg->subseg = dws->list_subseg->subseg + 1;
4779 else
4780 subseg->subseg = 1;
4781
4782 subseg->link = dws->list_subseg;
4783 dws->list_subseg = subseg;
4784 symbol_get_tc (opt_label)->u.dw = subseg;
4785 }
4786
4787 ppc_change_debug_section (i, subseg->subseg);
4788
4789 if (dw->def_size)
4790 {
4791 /* Add the length field. */
4792 expressionS *exp = &subseg->end_exp;
4793 int sz;
4794
4795 if (opt_label != NULL)
4796 symbol_set_value_now (opt_label);
4797
4798 /* Add the length field. Note that according to the AIX assembler
4799 manual, the size of the length field is 4 for powerpc32 but
4800 12 for powerpc64. */
4801 if (ppc_obj64)
4802 {
4803 /* Write the 64bit marker. */
4804 md_number_to_chars (frag_more (4), -1, 4);
4805 }
4806
4807 exp->X_op = O_subtract;
4808 exp->X_op_symbol = symbol_temp_new_now ();
4809 exp->X_add_symbol = symbol_temp_make ();
4810
4811 sz = ppc_obj64 ? 8 : 4;
4812 exp->X_add_number = -sz;
4813 emit_expr (exp, sz);
4814 }
4815 }
4816 }
4817
4818 /* This function handles the .text and .data pseudo-ops. These
4819 pseudo-ops aren't really used by XCOFF; we implement them for the
4820 convenience of people who aren't used to XCOFF. */
4821
4822 static void
ppc_section(int type)4823 ppc_section (int type)
4824 {
4825 const char *name;
4826 symbolS *sym;
4827
4828 if (type == 't')
4829 name = ".text[PR]";
4830 else if (type == 'd')
4831 name = ".data[RW]";
4832 else
4833 abort ();
4834
4835 sym = symbol_find_or_make (name);
4836
4837 ppc_change_csect (sym, 2);
4838
4839 demand_empty_rest_of_line ();
4840 }
4841
4842 /* This function handles the .section pseudo-op. This is mostly to
4843 give an error, since XCOFF only supports .text, .data and .bss, but
4844 we do permit the user to name the text or data section. */
4845
4846 static void
ppc_named_section(int ignore ATTRIBUTE_UNUSED)4847 ppc_named_section (int ignore ATTRIBUTE_UNUSED)
4848 {
4849 char *user_name;
4850 const char *real_name;
4851 char c;
4852 symbolS *sym;
4853
4854 c = get_symbol_name (&user_name);
4855
4856 if (strcmp (user_name, ".text") == 0)
4857 real_name = ".text[PR]";
4858 else if (strcmp (user_name, ".data") == 0)
4859 real_name = ".data[RW]";
4860 else
4861 {
4862 as_bad (_("the XCOFF file format does not support arbitrary sections"));
4863 (void) restore_line_pointer (c);
4864 ignore_rest_of_line ();
4865 return;
4866 }
4867
4868 (void) restore_line_pointer (c);
4869
4870 sym = symbol_find_or_make (real_name);
4871
4872 ppc_change_csect (sym, 2);
4873
4874 demand_empty_rest_of_line ();
4875 }
4876
4877 /* The .extern pseudo-op. We create an undefined symbol. */
4878
4879 static void
ppc_extern(int ignore ATTRIBUTE_UNUSED)4880 ppc_extern (int ignore ATTRIBUTE_UNUSED)
4881 {
4882 char *name;
4883 symbolS *sym;
4884
4885 if ((name = read_symbol_name ()) == NULL)
4886 return;
4887
4888 sym = symbol_find_or_make (name);
4889 free (name);
4890
4891 if (*input_line_pointer == ',')
4892 {
4893 unsigned short visibility;
4894 coff_symbol_type *coffsym = coffsymbol (symbol_get_bfdsym (sym));
4895
4896 input_line_pointer++;
4897 visibility = ppc_xcoff_get_visibility ();
4898 if (!visibility)
4899 {
4900 as_bad (_("Unknown visibility field in .extern"));
4901 ignore_rest_of_line ();
4902 return;
4903 }
4904
4905 coffsym->native->u.syment.n_type &= ~SYM_V_MASK;
4906 coffsym->native->u.syment.n_type |= visibility;
4907 }
4908
4909 demand_empty_rest_of_line ();
4910 }
4911
4912 /* XCOFF semantic for .globl says that the second parameter is
4913 the symbol visibility. */
4914
4915 static void
ppc_globl(int ignore ATTRIBUTE_UNUSED)4916 ppc_globl (int ignore ATTRIBUTE_UNUSED)
4917 {
4918 char *name;
4919 symbolS *sym;
4920
4921 if ((name = read_symbol_name ()) == NULL)
4922 return;
4923
4924 sym = symbol_find_or_make (name);
4925 free (name);
4926 S_SET_EXTERNAL (sym);
4927
4928 if (*input_line_pointer == ',')
4929 {
4930 unsigned short visibility;
4931 coff_symbol_type *coffsym = coffsymbol (symbol_get_bfdsym (sym));
4932
4933 input_line_pointer++;
4934 visibility = ppc_xcoff_get_visibility ();
4935 if (!visibility)
4936 {
4937 as_bad (_("Unknown visibility field in .globl"));
4938 ignore_rest_of_line ();
4939 return;
4940 }
4941
4942 coffsym->native->u.syment.n_type &= ~SYM_V_MASK;
4943 coffsym->native->u.syment.n_type |= visibility;
4944 }
4945
4946 demand_empty_rest_of_line ();
4947 }
4948
4949 /* XCOFF semantic for .weak says that the second parameter is
4950 the symbol visibility. */
4951
4952 static void
ppc_weak(int ignore ATTRIBUTE_UNUSED)4953 ppc_weak (int ignore ATTRIBUTE_UNUSED)
4954 {
4955 char *name;
4956 symbolS *sym;
4957
4958 if ((name = read_symbol_name ()) == NULL)
4959 return;
4960
4961 sym = symbol_find_or_make (name);
4962 free (name);
4963 S_SET_WEAK (sym);
4964
4965 if (*input_line_pointer == ',')
4966 {
4967 unsigned short visibility;
4968 coff_symbol_type *coffsym = coffsymbol (symbol_get_bfdsym (sym));
4969
4970 input_line_pointer++;
4971 visibility = ppc_xcoff_get_visibility ();
4972 if (!visibility)
4973 {
4974 as_bad (_("Unknown visibility field in .weak"));
4975 ignore_rest_of_line ();
4976 return;
4977 }
4978
4979 coffsym->native->u.syment.n_type &= ~SYM_V_MASK;
4980 coffsym->native->u.syment.n_type |= visibility;
4981 }
4982
4983 demand_empty_rest_of_line ();
4984 }
4985
4986 /* The .lglobl pseudo-op. Keep the symbol in the symbol table. */
4987
4988 static void
ppc_lglobl(int ignore ATTRIBUTE_UNUSED)4989 ppc_lglobl (int ignore ATTRIBUTE_UNUSED)
4990 {
4991 char *name;
4992 char endc;
4993 symbolS *sym;
4994
4995 endc = get_symbol_name (&name);
4996
4997 sym = symbol_find_or_make (name);
4998
4999 (void) restore_line_pointer (endc);
5000
5001 symbol_get_tc (sym)->output = 1;
5002
5003 demand_empty_rest_of_line ();
5004 }
5005
5006 /* The .ref pseudo-op. It takes a list of symbol names and inserts R_REF
5007 relocations at the beginning of the current csect.
5008
5009 (In principle, there's no reason why the relocations _have_ to be at
5010 the beginning. Anywhere in the csect would do. However, inserting
5011 at the beginning is what the native assembler does, and it helps to
5012 deal with cases where the .ref statements follow the section contents.)
5013
5014 ??? .refs don't work for empty .csects. However, the native assembler
5015 doesn't report an error in this case, and neither yet do we. */
5016
5017 static void
ppc_ref(int ignore ATTRIBUTE_UNUSED)5018 ppc_ref (int ignore ATTRIBUTE_UNUSED)
5019 {
5020 char *name;
5021 char c;
5022
5023 if (ppc_current_csect == NULL)
5024 {
5025 as_bad (_(".ref outside .csect"));
5026 ignore_rest_of_line ();
5027 return;
5028 }
5029
5030 do
5031 {
5032 c = get_symbol_name (&name);
5033
5034 fix_at_start (symbol_get_frag (ppc_current_csect), 0,
5035 symbol_find_or_make (name), 0, false, BFD_RELOC_NONE);
5036
5037 *input_line_pointer = c;
5038 SKIP_WHITESPACE_AFTER_NAME ();
5039 c = *input_line_pointer;
5040 if (c == ',')
5041 {
5042 input_line_pointer++;
5043 SKIP_WHITESPACE ();
5044 if (is_end_of_line[(unsigned char) *input_line_pointer])
5045 {
5046 as_bad (_("missing symbol name"));
5047 ignore_rest_of_line ();
5048 return;
5049 }
5050 }
5051 }
5052 while (c == ',');
5053
5054 demand_empty_rest_of_line ();
5055 }
5056
5057 /* The .rename pseudo-op. The RS/6000 assembler can rename symbols,
5058 although I don't know why it bothers. */
5059
5060 static void
ppc_rename(int ignore ATTRIBUTE_UNUSED)5061 ppc_rename (int ignore ATTRIBUTE_UNUSED)
5062 {
5063 char *name;
5064 char endc;
5065 symbolS *sym;
5066 int len;
5067
5068 endc = get_symbol_name (&name);
5069
5070 sym = symbol_find_or_make (name);
5071
5072 (void) restore_line_pointer (endc);
5073
5074 if (*input_line_pointer != ',')
5075 {
5076 as_bad (_("missing rename string"));
5077 ignore_rest_of_line ();
5078 return;
5079 }
5080 ++input_line_pointer;
5081
5082 symbol_get_tc (sym)->real_name = demand_copy_C_string (&len);
5083
5084 demand_empty_rest_of_line ();
5085 }
5086
5087 /* The .stabx pseudo-op. This is similar to a normal .stabs
5088 pseudo-op, but slightly different. A sample is
5089 .stabx "main:F-1",.main,142,0
5090 The first argument is the symbol name to create. The second is the
5091 value, and the third is the storage class. The fourth seems to be
5092 always zero, and I am assuming it is the type. */
5093
5094 static void
ppc_stabx(int ignore ATTRIBUTE_UNUSED)5095 ppc_stabx (int ignore ATTRIBUTE_UNUSED)
5096 {
5097 char *name;
5098 int len;
5099 symbolS *sym;
5100 expressionS exp;
5101
5102 name = demand_copy_C_string (&len);
5103
5104 if (*input_line_pointer != ',')
5105 {
5106 as_bad (_("missing value"));
5107 return;
5108 }
5109 ++input_line_pointer;
5110
5111 ppc_stab_symbol = true;
5112 sym = symbol_make (name);
5113 ppc_stab_symbol = false;
5114
5115 symbol_get_tc (sym)->real_name = name;
5116
5117 (void) expression (&exp);
5118
5119 switch (exp.X_op)
5120 {
5121 case O_illegal:
5122 case O_absent:
5123 case O_big:
5124 as_bad (_("illegal .stabx expression; zero assumed"));
5125 exp.X_add_number = 0;
5126 /* Fall through. */
5127 case O_constant:
5128 S_SET_VALUE (sym, (valueT) exp.X_add_number);
5129 symbol_set_frag (sym, &zero_address_frag);
5130 break;
5131
5132 case O_symbol:
5133 if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section)
5134 symbol_set_value_expression (sym, &exp);
5135 else
5136 {
5137 S_SET_VALUE (sym,
5138 exp.X_add_number + S_GET_VALUE (exp.X_add_symbol));
5139 symbol_set_frag (sym, symbol_get_frag (exp.X_add_symbol));
5140 }
5141 break;
5142
5143 default:
5144 /* The value is some complex expression. This will probably
5145 fail at some later point, but this is probably the right
5146 thing to do here. */
5147 symbol_set_value_expression (sym, &exp);
5148 break;
5149 }
5150
5151 S_SET_SEGMENT (sym, ppc_coff_debug_section);
5152 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
5153
5154 if (*input_line_pointer != ',')
5155 {
5156 as_bad (_("missing class"));
5157 return;
5158 }
5159 ++input_line_pointer;
5160
5161 S_SET_STORAGE_CLASS (sym, get_absolute_expression ());
5162
5163 if (*input_line_pointer != ',')
5164 {
5165 as_bad (_("missing type"));
5166 return;
5167 }
5168 ++input_line_pointer;
5169
5170 S_SET_DATA_TYPE (sym, get_absolute_expression ());
5171
5172 symbol_get_tc (sym)->output = 1;
5173
5174 if (S_GET_STORAGE_CLASS (sym) == C_STSYM)
5175 {
5176 /* In this case :
5177
5178 .bs name
5179 .stabx "z",arrays_,133,0
5180 .es
5181
5182 .comm arrays_,13768,3
5183
5184 resolve_symbol_value will copy the exp's "within" into sym's when the
5185 offset is 0. Since this seems to be corner case problem,
5186 only do the correction for storage class C_STSYM. A better solution
5187 would be to have the tc field updated in ppc_symbol_new_hook. */
5188
5189 if (exp.X_op == O_symbol)
5190 {
5191 if (ppc_current_block == NULL)
5192 as_bad (_(".stabx of storage class stsym must be within .bs/.es"));
5193
5194 symbol_get_tc (sym)->within = ppc_current_block;
5195 }
5196 }
5197
5198 if (exp.X_op != O_symbol
5199 || ! S_IS_EXTERNAL (exp.X_add_symbol)
5200 || S_GET_SEGMENT (exp.X_add_symbol) != bss_section)
5201 ppc_frob_label (sym);
5202 else
5203 {
5204 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
5205 symbol_append (sym, exp.X_add_symbol, &symbol_rootP, &symbol_lastP);
5206 if (symbol_get_tc (ppc_current_csect)->within == exp.X_add_symbol)
5207 symbol_get_tc (ppc_current_csect)->within = sym;
5208 }
5209
5210 demand_empty_rest_of_line ();
5211 }
5212
5213 /* The .file pseudo-op. On XCOFF, .file can have several parameters
5214 which are being added to the symbol table to provide additional
5215 information. */
5216
5217 static void
ppc_file(int ignore ATTRIBUTE_UNUSED)5218 ppc_file (int ignore ATTRIBUTE_UNUSED)
5219 {
5220 char *sfname, *s1 = NULL, *s2 = NULL, *s3 = NULL;
5221 int length, auxnb = 1;
5222
5223 /* Some assemblers tolerate immediately following '"'. */
5224 if ((sfname = demand_copy_string (&length)) != 0)
5225 {
5226 coff_symbol_type *coffsym;
5227 if (*input_line_pointer == ',')
5228 {
5229 ++input_line_pointer;
5230 s1 = demand_copy_string (&length);
5231 auxnb++;
5232
5233 if (*input_line_pointer == ',')
5234 {
5235 ++input_line_pointer;
5236 s2 = demand_copy_string (&length);
5237 auxnb++;
5238
5239 if (*input_line_pointer == ',')
5240 {
5241 ++input_line_pointer;
5242 s3 = demand_copy_string (&length);
5243 auxnb++;
5244 }
5245 }
5246 }
5247
5248 /* Use coff dot_file creation and adjust auxiliary entries. */
5249 c_dot_file_symbol (sfname);
5250 S_SET_NUMBER_AUXILIARY (symbol_rootP, auxnb);
5251 coffsym = coffsymbol (symbol_get_bfdsym (symbol_rootP));
5252 coffsym->native[1].u.auxent.x_file.x_ftype = XFT_FN;
5253
5254 if (s1)
5255 {
5256 coffsym->native[2].u.auxent.x_file.x_ftype = XFT_CT;
5257 coffsym->native[2].extrap = s1;
5258 }
5259 if (s2)
5260 {
5261 coffsym->native[3].u.auxent.x_file.x_ftype = XFT_CV;
5262 coffsym->native[3].extrap = s2;
5263 }
5264 if (s3)
5265 {
5266 coffsym->native[4].u.auxent.x_file.x_ftype = XFT_CD;
5267 coffsym->native[4].extrap = s3;
5268 }
5269
5270 demand_empty_rest_of_line ();
5271 }
5272 }
5273
5274 /* The .function pseudo-op. This takes several arguments. The first
5275 argument seems to be the external name of the symbol. The second
5276 argument seems to be the label for the start of the function. gcc
5277 uses the same name for both. I have no idea what the third and
5278 fourth arguments are meant to be. The optional fifth argument is
5279 an expression for the size of the function. In COFF this symbol
5280 gets an aux entry like that used for a csect. */
5281
5282 static void
ppc_function(int ignore ATTRIBUTE_UNUSED)5283 ppc_function (int ignore ATTRIBUTE_UNUSED)
5284 {
5285 char *name;
5286 char endc;
5287 char *s;
5288 symbolS *ext_sym;
5289 symbolS *lab_sym;
5290
5291 endc = get_symbol_name (&name);
5292
5293 /* Ignore any [PR] suffix. */
5294 name = ppc_canonicalize_symbol_name (name);
5295 s = strchr (name, '[');
5296 if (s != (char *) NULL
5297 && strcmp (s + 1, "PR]") == 0)
5298 *s = '\0';
5299
5300 ext_sym = symbol_find_or_make (name);
5301
5302 (void) restore_line_pointer (endc);
5303
5304 if (*input_line_pointer != ',')
5305 {
5306 as_bad (_("missing symbol name"));
5307 ignore_rest_of_line ();
5308 return;
5309 }
5310 ++input_line_pointer;
5311
5312 endc = get_symbol_name (&name);
5313
5314 lab_sym = symbol_find_or_make (name);
5315
5316 (void) restore_line_pointer (endc);
5317
5318 if (ext_sym != lab_sym)
5319 {
5320 expressionS exp;
5321
5322 exp.X_op = O_symbol;
5323 exp.X_add_symbol = lab_sym;
5324 exp.X_op_symbol = NULL;
5325 exp.X_add_number = 0;
5326 exp.X_unsigned = 0;
5327 symbol_set_value_expression (ext_sym, &exp);
5328 }
5329
5330 if (symbol_get_tc (ext_sym)->symbol_class == -1)
5331 symbol_get_tc (ext_sym)->symbol_class = XMC_PR;
5332 symbol_get_tc (ext_sym)->output = 1;
5333
5334 if (*input_line_pointer == ',')
5335 {
5336 expressionS exp;
5337
5338 /* Ignore the third argument. */
5339 ++input_line_pointer;
5340 expression (& exp);
5341 if (*input_line_pointer == ',')
5342 {
5343 /* Ignore the fourth argument. */
5344 ++input_line_pointer;
5345 expression (& exp);
5346 if (*input_line_pointer == ',')
5347 {
5348 /* The fifth argument is the function size.
5349 If it's omitted, the size will be the containing csect.
5350 This will be donce during ppc_frob_symtab. */
5351 ++input_line_pointer;
5352 symbol_get_tc (ext_sym)->u.size
5353 = symbol_new ("L0\001", absolute_section,
5354 &zero_address_frag, 0);
5355 pseudo_set (symbol_get_tc (ext_sym)->u.size);
5356 }
5357 }
5358 }
5359
5360 S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
5361 SF_SET_FUNCTION (ext_sym);
5362 SF_SET_PROCESS (ext_sym);
5363 coff_add_linesym (ext_sym);
5364
5365 demand_empty_rest_of_line ();
5366 }
5367
5368 /* The .bf pseudo-op. This is just like a COFF C_FCN symbol named
5369 ".bf". If the pseudo op .bi was seen before .bf, patch the .bi sym
5370 with the correct line number */
5371
5372 static symbolS *saved_bi_sym = 0;
5373
5374 static void
ppc_bf(int ignore ATTRIBUTE_UNUSED)5375 ppc_bf (int ignore ATTRIBUTE_UNUSED)
5376 {
5377 symbolS *sym;
5378
5379 sym = symbol_make (".bf");
5380 S_SET_SEGMENT (sym, text_section);
5381 symbol_set_frag (sym, frag_now);
5382 S_SET_VALUE (sym, frag_now_fix ());
5383 S_SET_STORAGE_CLASS (sym, C_FCN);
5384
5385 coff_line_base = get_absolute_expression ();
5386
5387 S_SET_NUMBER_AUXILIARY (sym, 1);
5388 SA_SET_SYM_LNNO (sym, coff_line_base);
5389
5390 /* Line number for bi. */
5391 if (saved_bi_sym)
5392 {
5393 S_SET_VALUE (saved_bi_sym, coff_n_line_nos);
5394 saved_bi_sym = 0;
5395 }
5396
5397
5398 symbol_get_tc (sym)->output = 1;
5399
5400 ppc_frob_label (sym);
5401
5402 demand_empty_rest_of_line ();
5403 }
5404
5405 /* The .ef pseudo-op. This is just like a COFF C_FCN symbol named
5406 ".ef", except that the line number is absolute, not relative to the
5407 most recent ".bf" symbol. */
5408
5409 static void
ppc_ef(int ignore ATTRIBUTE_UNUSED)5410 ppc_ef (int ignore ATTRIBUTE_UNUSED)
5411 {
5412 symbolS *sym;
5413
5414 sym = symbol_make (".ef");
5415 S_SET_SEGMENT (sym, text_section);
5416 symbol_set_frag (sym, frag_now);
5417 S_SET_VALUE (sym, frag_now_fix ());
5418 S_SET_STORAGE_CLASS (sym, C_FCN);
5419 S_SET_NUMBER_AUXILIARY (sym, 1);
5420 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
5421 symbol_get_tc (sym)->output = 1;
5422
5423 ppc_frob_label (sym);
5424
5425 demand_empty_rest_of_line ();
5426 }
5427
5428 /* The .bi and .ei pseudo-ops. These take a string argument and
5429 generates a C_BINCL or C_EINCL symbol, which goes at the start of
5430 the symbol list. The value of .bi will be know when the next .bf
5431 is encountered. */
5432
5433 static void
ppc_biei(int ei)5434 ppc_biei (int ei)
5435 {
5436 static symbolS *last_biei;
5437
5438 char *name;
5439 int len;
5440 symbolS *sym;
5441 symbolS *look;
5442
5443 name = demand_copy_C_string (&len);
5444
5445 /* The value of these symbols is actually file offset. Here we set
5446 the value to the index into the line number entries. In
5447 ppc_frob_symbols we set the fix_line field, which will cause BFD
5448 to do the right thing. */
5449
5450 sym = symbol_make (name);
5451 /* obj-coff.c currently only handles line numbers correctly in the
5452 .text section. */
5453 S_SET_SEGMENT (sym, text_section);
5454 S_SET_VALUE (sym, coff_n_line_nos);
5455 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
5456
5457 S_SET_STORAGE_CLASS (sym, ei ? C_EINCL : C_BINCL);
5458 symbol_get_tc (sym)->output = 1;
5459
5460 /* Save bi. */
5461 if (ei)
5462 saved_bi_sym = 0;
5463 else
5464 saved_bi_sym = sym;
5465
5466 for (look = last_biei ? last_biei : symbol_rootP;
5467 (look != (symbolS *) NULL
5468 && (S_GET_STORAGE_CLASS (look) == C_FILE
5469 || S_GET_STORAGE_CLASS (look) == C_BINCL
5470 || S_GET_STORAGE_CLASS (look) == C_EINCL));
5471 look = symbol_next (look))
5472 ;
5473 if (look != (symbolS *) NULL)
5474 {
5475 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
5476 symbol_insert (sym, look, &symbol_rootP, &symbol_lastP);
5477 last_biei = sym;
5478 }
5479
5480 demand_empty_rest_of_line ();
5481 }
5482
5483 /* The .bs pseudo-op. This generates a C_BSTAT symbol named ".bs".
5484 There is one argument, which is a csect symbol. The value of the
5485 .bs symbol is the index of this csect symbol. */
5486
5487 static void
ppc_bs(int ignore ATTRIBUTE_UNUSED)5488 ppc_bs (int ignore ATTRIBUTE_UNUSED)
5489 {
5490 char *name;
5491 char endc;
5492 symbolS *csect;
5493 symbolS *sym;
5494
5495 if (ppc_current_block != NULL)
5496 as_bad (_("nested .bs blocks"));
5497
5498 endc = get_symbol_name (&name);
5499
5500 csect = symbol_find_or_make (name);
5501
5502 (void) restore_line_pointer (endc);
5503
5504 sym = symbol_make (".bs");
5505 S_SET_SEGMENT (sym, now_seg);
5506 S_SET_STORAGE_CLASS (sym, C_BSTAT);
5507 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
5508 symbol_get_tc (sym)->output = 1;
5509
5510 symbol_get_tc (sym)->within = csect;
5511
5512 ppc_frob_label (sym);
5513
5514 ppc_current_block = sym;
5515
5516 demand_empty_rest_of_line ();
5517 }
5518
5519 /* The .es pseudo-op. Generate a C_ESTART symbol named .es. */
5520
5521 static void
ppc_es(int ignore ATTRIBUTE_UNUSED)5522 ppc_es (int ignore ATTRIBUTE_UNUSED)
5523 {
5524 symbolS *sym;
5525
5526 if (ppc_current_block == NULL)
5527 as_bad (_(".es without preceding .bs"));
5528
5529 sym = symbol_make (".es");
5530 S_SET_SEGMENT (sym, now_seg);
5531 S_SET_STORAGE_CLASS (sym, C_ESTAT);
5532 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
5533 symbol_get_tc (sym)->output = 1;
5534
5535 ppc_frob_label (sym);
5536
5537 ppc_current_block = NULL;
5538
5539 demand_empty_rest_of_line ();
5540 }
5541
5542 /* The .bb pseudo-op. Generate a C_BLOCK symbol named .bb, with a
5543 line number. */
5544
5545 static void
ppc_bb(int ignore ATTRIBUTE_UNUSED)5546 ppc_bb (int ignore ATTRIBUTE_UNUSED)
5547 {
5548 symbolS *sym;
5549
5550 sym = symbol_make (".bb");
5551 S_SET_SEGMENT (sym, text_section);
5552 symbol_set_frag (sym, frag_now);
5553 S_SET_VALUE (sym, frag_now_fix ());
5554 S_SET_STORAGE_CLASS (sym, C_BLOCK);
5555
5556 S_SET_NUMBER_AUXILIARY (sym, 1);
5557 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
5558
5559 symbol_get_tc (sym)->output = 1;
5560
5561 SF_SET_PROCESS (sym);
5562
5563 ppc_frob_label (sym);
5564
5565 demand_empty_rest_of_line ();
5566 }
5567
5568 /* The .eb pseudo-op. Generate a C_BLOCK symbol named .eb, with a
5569 line number. */
5570
5571 static void
ppc_eb(int ignore ATTRIBUTE_UNUSED)5572 ppc_eb (int ignore ATTRIBUTE_UNUSED)
5573 {
5574 symbolS *sym;
5575
5576 sym = symbol_make (".eb");
5577 S_SET_SEGMENT (sym, text_section);
5578 symbol_set_frag (sym, frag_now);
5579 S_SET_VALUE (sym, frag_now_fix ());
5580 S_SET_STORAGE_CLASS (sym, C_BLOCK);
5581 S_SET_NUMBER_AUXILIARY (sym, 1);
5582 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
5583 symbol_get_tc (sym)->output = 1;
5584
5585 SF_SET_PROCESS (sym);
5586
5587 ppc_frob_label (sym);
5588
5589 demand_empty_rest_of_line ();
5590 }
5591
5592 /* The .bc pseudo-op. This just creates a C_BCOMM symbol with a
5593 specified name. */
5594
5595 static void
ppc_bc(int ignore ATTRIBUTE_UNUSED)5596 ppc_bc (int ignore ATTRIBUTE_UNUSED)
5597 {
5598 char *name;
5599 int len;
5600 symbolS *sym;
5601
5602 name = demand_copy_C_string (&len);
5603 sym = symbol_make (name);
5604 S_SET_SEGMENT (sym, ppc_coff_debug_section);
5605 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
5606 S_SET_STORAGE_CLASS (sym, C_BCOMM);
5607 S_SET_VALUE (sym, 0);
5608 symbol_get_tc (sym)->output = 1;
5609
5610 ppc_frob_label (sym);
5611
5612 demand_empty_rest_of_line ();
5613 }
5614
5615 /* The .ec pseudo-op. This just creates a C_ECOMM symbol. */
5616
5617 static void
ppc_ec(int ignore ATTRIBUTE_UNUSED)5618 ppc_ec (int ignore ATTRIBUTE_UNUSED)
5619 {
5620 symbolS *sym;
5621
5622 sym = symbol_make (".ec");
5623 S_SET_SEGMENT (sym, ppc_coff_debug_section);
5624 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
5625 S_SET_STORAGE_CLASS (sym, C_ECOMM);
5626 S_SET_VALUE (sym, 0);
5627 symbol_get_tc (sym)->output = 1;
5628
5629 ppc_frob_label (sym);
5630
5631 demand_empty_rest_of_line ();
5632 }
5633
5634 /* The .toc pseudo-op. Switch to the .toc subsegment. */
5635
5636 static void
ppc_toc(int ignore ATTRIBUTE_UNUSED)5637 ppc_toc (int ignore ATTRIBUTE_UNUSED)
5638 {
5639 if (ppc_toc_csect != (symbolS *) NULL)
5640 subseg_set (data_section, symbol_get_tc (ppc_toc_csect)->subseg);
5641 else
5642 {
5643 subsegT subseg;
5644 symbolS *sym;
5645 symbolS *list;
5646
5647 subseg = ppc_xcoff_data_section.next_subsegment;
5648 ++ppc_xcoff_data_section.next_subsegment;
5649
5650 subseg_new (segment_name (data_section), subseg);
5651 ppc_toc_frag = frag_now;
5652
5653 sym = symbol_find_or_make ("TOC[TC0]");
5654 symbol_set_frag (sym, frag_now);
5655 S_SET_SEGMENT (sym, data_section);
5656 S_SET_VALUE (sym, (valueT) frag_now_fix ());
5657 symbol_get_tc (sym)->subseg = subseg;
5658 symbol_get_tc (sym)->output = 1;
5659 symbol_get_tc (sym)->within = sym;
5660
5661 ppc_toc_csect = sym;
5662
5663 for (list = ppc_xcoff_data_section.csects;
5664 symbol_get_tc (list)->next != (symbolS *) NULL;
5665 list = symbol_get_tc (list)->next)
5666 ;
5667 symbol_get_tc (list)->next = sym;
5668
5669 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
5670 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
5671 &symbol_lastP);
5672 }
5673
5674 ppc_current_csect = ppc_toc_csect;
5675
5676 demand_empty_rest_of_line ();
5677 }
5678
5679 /* The AIX assembler automatically aligns the operands of a .long or
5680 .short pseudo-op, and we want to be compatible. */
5681
5682 static void
ppc_xcoff_cons(int log_size)5683 ppc_xcoff_cons (int log_size)
5684 {
5685 frag_align (log_size, 0, 0);
5686 record_alignment (now_seg, log_size);
5687 cons (1 << log_size);
5688 }
5689
5690 static void
ppc_vbyte(int dummy ATTRIBUTE_UNUSED)5691 ppc_vbyte (int dummy ATTRIBUTE_UNUSED)
5692 {
5693 expressionS exp;
5694 int byte_count;
5695
5696 (void) expression (&exp);
5697
5698 if (exp.X_op != O_constant)
5699 {
5700 as_bad (_("non-constant byte count"));
5701 return;
5702 }
5703
5704 byte_count = exp.X_add_number;
5705
5706 if (*input_line_pointer != ',')
5707 {
5708 as_bad (_("missing value"));
5709 return;
5710 }
5711
5712 ++input_line_pointer;
5713 cons (byte_count);
5714 }
5715
5716 void
ppc_xcoff_md_finish(void)5717 ppc_xcoff_md_finish (void)
5718 {
5719 int i;
5720
5721 for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++)
5722 {
5723 struct dw_section *dws = &dw_sections[i];
5724 struct dw_subsection *dwss;
5725
5726 if (dws->anon_subseg)
5727 {
5728 dwss = dws->anon_subseg;
5729 dwss->link = dws->list_subseg;
5730 }
5731 else
5732 dwss = dws->list_subseg;
5733
5734 for (; dwss != NULL; dwss = dwss->link)
5735 if (dwss->end_exp.X_add_symbol != NULL)
5736 {
5737 subseg_set (dws->sect, dwss->subseg);
5738 symbol_set_value_now (dwss->end_exp.X_add_symbol);
5739 }
5740 }
5741 ppc_cpu = 0;
5742 }
5743
5744 #endif /* OBJ_XCOFF */
5745 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
5746
5747 /* The .tc pseudo-op. This is used when generating either XCOFF or
5748 ELF. This takes two or more arguments.
5749
5750 When generating XCOFF output, the first argument is the name to
5751 give to this location in the toc; this will be a symbol with class
5752 TC. The rest of the arguments are N-byte values to actually put at
5753 this location in the TOC; often there is just one more argument, a
5754 relocatable symbol reference. The size of the value to store
5755 depends on target word size. A 32-bit target uses 4-byte values, a
5756 64-bit target uses 8-byte values.
5757
5758 When not generating XCOFF output, the arguments are the same, but
5759 the first argument is simply ignored. */
5760
5761 static void
ppc_tc(int ignore ATTRIBUTE_UNUSED)5762 ppc_tc (int ignore ATTRIBUTE_UNUSED)
5763 {
5764 #ifdef OBJ_XCOFF
5765
5766 /* Define the TOC symbol name. */
5767 {
5768 char *name;
5769 char endc;
5770 symbolS *sym;
5771
5772 if (ppc_toc_csect == (symbolS *) NULL
5773 || ppc_toc_csect != ppc_current_csect)
5774 {
5775 as_bad (_(".tc not in .toc section"));
5776 ignore_rest_of_line ();
5777 return;
5778 }
5779
5780 endc = get_symbol_name (&name);
5781
5782 sym = symbol_find_or_make (name);
5783
5784 (void) restore_line_pointer (endc);
5785
5786 if (S_IS_DEFINED (sym))
5787 {
5788 symbolS *label;
5789
5790 label = symbol_get_tc (ppc_current_csect)->within;
5791 if (symbol_get_tc (label)->symbol_class != XMC_TC0)
5792 {
5793 as_bad (_(".tc with no label"));
5794 ignore_rest_of_line ();
5795 return;
5796 }
5797
5798 S_SET_SEGMENT (label, S_GET_SEGMENT (sym));
5799 symbol_set_frag (label, symbol_get_frag (sym));
5800 S_SET_VALUE (label, S_GET_VALUE (sym));
5801
5802 while (! is_end_of_line[(unsigned char) *input_line_pointer])
5803 ++input_line_pointer;
5804
5805 return;
5806 }
5807
5808 S_SET_SEGMENT (sym, now_seg);
5809 symbol_set_frag (sym, frag_now);
5810 S_SET_VALUE (sym, (valueT) frag_now_fix ());
5811
5812 /* AIX assembler seems to allow any storage class to be set in .tc.
5813 But for now, only XMC_TC and XMC_TE are supported by us. */
5814 switch (symbol_get_tc (sym)->symbol_class)
5815 {
5816 case XMC_TC:
5817 case XMC_TE:
5818 break;
5819
5820 default:
5821 as_bad (_(".tc with storage class %d not yet supported"),
5822 symbol_get_tc (sym)->symbol_class);
5823 ignore_rest_of_line ();
5824 return;
5825 }
5826 symbol_get_tc (sym)->output = 1;
5827
5828 ppc_frob_label (sym);
5829 }
5830
5831 #endif /* OBJ_XCOFF */
5832 #ifdef OBJ_ELF
5833 int align;
5834
5835 /* Skip the TOC symbol name. */
5836 while (is_part_of_name (*input_line_pointer)
5837 || *input_line_pointer == ' '
5838 || *input_line_pointer == '['
5839 || *input_line_pointer == ']'
5840 || *input_line_pointer == '{'
5841 || *input_line_pointer == '}')
5842 ++input_line_pointer;
5843
5844 /* Align to a four/eight byte boundary. */
5845 align = ppc_obj64 ? 3 : 2;
5846 frag_align (align, 0, 0);
5847 record_alignment (now_seg, align);
5848 #endif /* OBJ_ELF */
5849
5850 if (*input_line_pointer != ',')
5851 demand_empty_rest_of_line ();
5852 else
5853 {
5854 ++input_line_pointer;
5855 cons (ppc_obj64 ? 8 : 4);
5856 }
5857 }
5858
5859 /* Pseudo-op .machine. */
5860
5861 static void
ppc_machine(int ignore ATTRIBUTE_UNUSED)5862 ppc_machine (int ignore ATTRIBUTE_UNUSED)
5863 {
5864 char c;
5865 char *cpu_string;
5866 #define MAX_HISTORY 100
5867 static ppc_cpu_t *cpu_history;
5868 static int curr_hist;
5869
5870 SKIP_WHITESPACE ();
5871
5872 c = get_symbol_name (&cpu_string);
5873 cpu_string = xstrdup (cpu_string);
5874 (void) restore_line_pointer (c);
5875
5876 if (cpu_string != NULL)
5877 {
5878 ppc_cpu_t old_cpu = ppc_cpu;
5879 char *p;
5880
5881 for (p = cpu_string; *p != 0; p++)
5882 *p = TOLOWER (*p);
5883
5884 if (strcmp (cpu_string, "push") == 0)
5885 {
5886 if (cpu_history == NULL)
5887 cpu_history = XNEWVEC (ppc_cpu_t, MAX_HISTORY);
5888
5889 if (curr_hist >= MAX_HISTORY)
5890 as_bad (_(".machine stack overflow"));
5891 else
5892 cpu_history[curr_hist++] = ppc_cpu;
5893 }
5894 else if (strcmp (cpu_string, "pop") == 0)
5895 {
5896 if (curr_hist <= 0)
5897 as_bad (_(".machine stack underflow"));
5898 else
5899 ppc_cpu = cpu_history[--curr_hist];
5900 }
5901 else
5902 {
5903 ppc_cpu_t new_cpu;
5904 /* Not using the global "sticky" variable here results in
5905 none of the extra functional unit command line options,
5906 -many, -maltivec, -mspe, -mspe2, -mvle, -mvsx, being in
5907 force after selecting a new cpu with .machine.
5908 ".machine altivec" and other extra functional unit
5909 options do not count as a new machine, instead they add
5910 to currently selected opcodes. */
5911 ppc_cpu_t machine_sticky = 0;
5912 /* Unfortunately, some versions of gcc emit a .machine
5913 directive very near the start of the compiler's assembly
5914 output file. This is bad because it overrides user -Wa
5915 cpu selection. Worse, there are versions of gcc that
5916 emit the *wrong* cpu, not even respecting the -mcpu given
5917 to gcc. See gcc pr101393. And to compound the problem,
5918 as of 20220222 gcc doesn't pass the correct cpu option to
5919 gas on the command line. See gcc pr59828. Hack around
5920 this by keeping sticky options for an early .machine. */
5921 asection *sec;
5922 for (sec = stdoutput->sections; sec != NULL; sec = sec->next)
5923 {
5924 segment_info_type *info = seg_info (sec);
5925 /* Are the frags for this section perturbed from their
5926 initial state? Even .align will count here. */
5927 if (info != NULL
5928 && (info->frchainP->frch_root != info->frchainP->frch_last
5929 || info->frchainP->frch_root->fr_type != rs_fill
5930 || info->frchainP->frch_root->fr_fix != 0))
5931 break;
5932 }
5933 new_cpu = ppc_parse_cpu (ppc_cpu,
5934 sec == NULL ? &sticky : &machine_sticky,
5935 cpu_string);
5936 if (new_cpu != 0)
5937 ppc_cpu = new_cpu;
5938 else
5939 as_bad (_("invalid machine `%s'"), cpu_string);
5940 }
5941
5942 if (ppc_cpu != old_cpu)
5943 ppc_setup_opcodes ();
5944 }
5945
5946 demand_empty_rest_of_line ();
5947 }
5948 #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
5949
5950 #ifdef OBJ_XCOFF
5951
5952 /* XCOFF specific symbol and file handling. */
5953
5954 /* Canonicalize the symbol name. We use the to force the suffix, if
5955 any, to use square brackets, and to be in upper case. */
5956
5957 char *
ppc_canonicalize_symbol_name(char * name)5958 ppc_canonicalize_symbol_name (char *name)
5959 {
5960 char *s;
5961
5962 if (ppc_stab_symbol)
5963 return name;
5964
5965 for (s = name; *s != '\0' && *s != '{' && *s != '['; s++)
5966 ;
5967 if (*s != '\0')
5968 {
5969 char brac;
5970
5971 if (*s == '[')
5972 brac = ']';
5973 else
5974 {
5975 *s = '[';
5976 brac = '}';
5977 }
5978
5979 for (s++; *s != '\0' && *s != brac; s++)
5980 *s = TOUPPER (*s);
5981
5982 if (*s == '\0' || s[1] != '\0')
5983 as_bad (_("bad symbol suffix"));
5984
5985 *s = ']';
5986 }
5987
5988 return name;
5989 }
5990
5991 /* Set the class of a symbol based on the suffix, if any. This is
5992 called whenever a new symbol is created. */
5993
5994 void
ppc_symbol_new_hook(symbolS * sym)5995 ppc_symbol_new_hook (symbolS *sym)
5996 {
5997 struct ppc_tc_sy *tc;
5998 const char *s;
5999
6000 tc = symbol_get_tc (sym);
6001 tc->next = NULL;
6002 tc->output = 0;
6003 tc->symbol_class = -1;
6004 tc->real_name = NULL;
6005 tc->subseg = 0;
6006 tc->align = 0;
6007 tc->u.size = NULL;
6008 tc->u.dw = NULL;
6009 tc->within = NULL;
6010
6011 if (ppc_stab_symbol)
6012 return;
6013
6014 s = strchr (S_GET_NAME (sym), '[');
6015 if (s == (const char *) NULL)
6016 {
6017 /* There is no suffix. */
6018 return;
6019 }
6020
6021 ++s;
6022
6023 switch (s[0])
6024 {
6025 case 'B':
6026 if (strcmp (s, "BS]") == 0)
6027 tc->symbol_class = XMC_BS;
6028 break;
6029 case 'D':
6030 if (strcmp (s, "DB]") == 0)
6031 tc->symbol_class = XMC_DB;
6032 else if (strcmp (s, "DS]") == 0)
6033 tc->symbol_class = XMC_DS;
6034 break;
6035 case 'G':
6036 if (strcmp (s, "GL]") == 0)
6037 tc->symbol_class = XMC_GL;
6038 break;
6039 case 'P':
6040 if (strcmp (s, "PR]") == 0)
6041 tc->symbol_class = XMC_PR;
6042 break;
6043 case 'R':
6044 if (strcmp (s, "RO]") == 0)
6045 tc->symbol_class = XMC_RO;
6046 else if (strcmp (s, "RW]") == 0)
6047 tc->symbol_class = XMC_RW;
6048 break;
6049 case 'S':
6050 if (strcmp (s, "SV]") == 0)
6051 tc->symbol_class = XMC_SV;
6052 break;
6053 case 'T':
6054 if (strcmp (s, "TC]") == 0)
6055 tc->symbol_class = XMC_TC;
6056 else if (strcmp (s, "TI]") == 0)
6057 tc->symbol_class = XMC_TI;
6058 else if (strcmp (s, "TB]") == 0)
6059 tc->symbol_class = XMC_TB;
6060 else if (strcmp (s, "TC0]") == 0 || strcmp (s, "T0]") == 0)
6061 tc->symbol_class = XMC_TC0;
6062 else if (strcmp (s, "TE]") == 0)
6063 tc->symbol_class = XMC_TE;
6064 else if (strcmp (s, "TL]") == 0)
6065 tc->symbol_class = XMC_TL;
6066 break;
6067 case 'U':
6068 if (strcmp (s, "UA]") == 0)
6069 tc->symbol_class = XMC_UA;
6070 else if (strcmp (s, "UC]") == 0)
6071 tc->symbol_class = XMC_UC;
6072 else if (strcmp (s, "UL]") == 0)
6073 tc->symbol_class = XMC_UL;
6074 break;
6075 case 'X':
6076 if (strcmp (s, "XO]") == 0)
6077 tc->symbol_class = XMC_XO;
6078 break;
6079 }
6080
6081 if (tc->symbol_class == -1)
6082 as_bad (_("unrecognized symbol suffix"));
6083 }
6084
6085 /* This variable is set by ppc_frob_symbol if any absolute symbols are
6086 seen. It tells ppc_adjust_symtab whether it needs to look through
6087 the symbols. */
6088
6089 static bool ppc_saw_abs;
6090
6091 /* Change the name of a symbol just before writing it out. Set the
6092 real name if the .rename pseudo-op was used. Otherwise, remove any
6093 class suffix. Return 1 if the symbol should not be included in the
6094 symbol table. */
6095
6096 int
ppc_frob_symbol(symbolS * sym)6097 ppc_frob_symbol (symbolS *sym)
6098 {
6099 static symbolS *ppc_last_function;
6100 static symbolS *set_end;
6101
6102 /* Discard symbols that should not be included in the output symbol
6103 table. */
6104 if (! symbol_used_in_reloc_p (sym)
6105 && S_GET_STORAGE_CLASS (sym) != C_DWARF
6106 && ((symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0
6107 || (! (S_IS_EXTERNAL (sym) || S_IS_WEAK (sym))
6108 && ! symbol_get_tc (sym)->output
6109 && S_GET_STORAGE_CLASS (sym) != C_FILE)))
6110 return 1;
6111
6112 /* This one will disappear anyway. Don't make a csect sym for it. */
6113 if (sym == abs_section_sym)
6114 return 1;
6115
6116 if (symbol_get_tc (sym)->real_name != (char *) NULL)
6117 S_SET_NAME (sym, symbol_get_tc (sym)->real_name);
6118 else
6119 {
6120 const char *name;
6121 const char *s;
6122
6123 name = S_GET_NAME (sym);
6124 s = strchr (name, '[');
6125 if (s != (char *) NULL)
6126 {
6127 unsigned int len;
6128 char *snew;
6129
6130 len = s - name;
6131 snew = xstrndup (name, len);
6132
6133 S_SET_NAME (sym, snew);
6134 }
6135 }
6136
6137 if (set_end != (symbolS *) NULL)
6138 {
6139 SA_SET_SYM_ENDNDX (set_end, sym);
6140 set_end = NULL;
6141 }
6142
6143 if (SF_GET_FUNCTION (sym))
6144 {
6145 /* Make sure coff_last_function is reset. Otherwise, we won't create
6146 the auxent for the next function. */
6147 coff_last_function = 0;
6148 ppc_last_function = sym;
6149 if (symbol_get_tc (sym)->u.size != (symbolS *) NULL)
6150 {
6151 resolve_symbol_value (symbol_get_tc (sym)->u.size);
6152 SA_SET_SYM_FSIZE (sym,
6153 (long) S_GET_VALUE (symbol_get_tc (sym)->u.size));
6154 }
6155 else
6156 {
6157 /* Size of containing csect. */
6158 symbolS* within = symbol_get_tc (sym)->within;
6159 coff_symbol_type *csect = coffsymbol (symbol_get_bfdsym (within));
6160 combined_entry_type *csectaux
6161 = &csect->native[S_GET_NUMBER_AUXILIARY(within)];
6162
6163 SA_SET_SYM_FSIZE (sym, csectaux->u.auxent.x_csect.x_scnlen.u64);
6164 }
6165 }
6166 else if (S_GET_STORAGE_CLASS (sym) == C_FCN
6167 && strcmp (S_GET_NAME (sym), ".ef") == 0)
6168 {
6169 if (ppc_last_function == (symbolS *) NULL)
6170 as_bad (_(".ef with no preceding .function"));
6171 else
6172 {
6173 set_end = ppc_last_function;
6174 ppc_last_function = NULL;
6175
6176 /* We don't have a C_EFCN symbol, but we need to force the
6177 COFF backend to believe that it has seen one. */
6178 coff_last_function = NULL;
6179 }
6180 }
6181
6182 if (! (S_IS_EXTERNAL (sym) || S_IS_WEAK (sym))
6183 && (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) == 0
6184 && S_GET_STORAGE_CLASS (sym) != C_FILE
6185 && S_GET_STORAGE_CLASS (sym) != C_FCN
6186 && S_GET_STORAGE_CLASS (sym) != C_BLOCK
6187 && S_GET_STORAGE_CLASS (sym) != C_BSTAT
6188 && S_GET_STORAGE_CLASS (sym) != C_ESTAT
6189 && S_GET_STORAGE_CLASS (sym) != C_BINCL
6190 && S_GET_STORAGE_CLASS (sym) != C_EINCL
6191 && S_GET_SEGMENT (sym) != ppc_coff_debug_section)
6192 S_SET_STORAGE_CLASS (sym, C_HIDEXT);
6193
6194 if (S_GET_STORAGE_CLASS (sym) == C_EXT
6195 || S_GET_STORAGE_CLASS (sym) == C_AIX_WEAKEXT
6196 || S_GET_STORAGE_CLASS (sym) == C_HIDEXT)
6197 {
6198 int i;
6199 combined_entry_type *a;
6200
6201 /* Create a csect aux. */
6202 i = S_GET_NUMBER_AUXILIARY (sym);
6203 S_SET_NUMBER_AUXILIARY (sym, i + 1);
6204 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i + 1];
6205 if (symbol_get_tc (sym)->symbol_class == XMC_TC0)
6206 {
6207 /* This is the TOC table. */
6208 know (strcmp (S_GET_NAME (sym), "TOC") == 0);
6209 a->u.auxent.x_csect.x_scnlen.u64 = 0;
6210 a->u.auxent.x_csect.x_smtyp = (2 << 3) | XTY_SD;
6211 }
6212 else if (symbol_get_tc (sym)->subseg != 0)
6213 {
6214 /* This is a csect symbol. x_scnlen is the size of the
6215 csect. */
6216 if (symbol_get_tc (sym)->next == (symbolS *) NULL)
6217 a->u.auxent.x_csect.x_scnlen.u64
6218 = bfd_section_size (S_GET_SEGMENT (sym)) - S_GET_VALUE (sym);
6219 else
6220 {
6221 resolve_symbol_value (symbol_get_tc (sym)->next);
6222 a->u.auxent.x_csect.x_scnlen.u64
6223 = S_GET_VALUE (symbol_get_tc (sym)->next) - S_GET_VALUE (sym);
6224 }
6225 if (symbol_get_tc (sym)->symbol_class == XMC_BS
6226 || symbol_get_tc (sym)->symbol_class == XMC_UL)
6227 a->u.auxent.x_csect.x_smtyp
6228 = (symbol_get_tc (sym)->align << 3) | XTY_CM;
6229 else
6230 a->u.auxent.x_csect.x_smtyp
6231 = (symbol_get_tc (sym)->align << 3) | XTY_SD;
6232 }
6233 else if (S_GET_SEGMENT (sym) == bss_section
6234 || S_GET_SEGMENT (sym) == ppc_xcoff_tbss_section.segment)
6235 {
6236 /* This is a common symbol. */
6237 a->u.auxent.x_csect.x_scnlen.u64 = symbol_get_frag (sym)->fr_offset;
6238 a->u.auxent.x_csect.x_smtyp
6239 = (symbol_get_tc (sym)->align << 3) | XTY_CM;
6240 if (S_GET_SEGMENT (sym) == ppc_xcoff_tbss_section.segment)
6241 symbol_get_tc (sym)->symbol_class = XMC_UL;
6242 else if (S_IS_EXTERNAL (sym))
6243 symbol_get_tc (sym)->symbol_class = XMC_RW;
6244 else
6245 symbol_get_tc (sym)->symbol_class = XMC_BS;
6246 }
6247 else if (S_GET_SEGMENT (sym) == absolute_section)
6248 {
6249 /* This is an absolute symbol. The csect will be created by
6250 ppc_adjust_symtab. */
6251 ppc_saw_abs = true;
6252 a->u.auxent.x_csect.x_smtyp = XTY_LD;
6253 if (symbol_get_tc (sym)->symbol_class == -1)
6254 symbol_get_tc (sym)->symbol_class = XMC_XO;
6255 }
6256 else if (! S_IS_DEFINED (sym))
6257 {
6258 /* This is an external symbol. */
6259 a->u.auxent.x_csect.x_scnlen.u64 = 0;
6260 a->u.auxent.x_csect.x_smtyp = XTY_ER;
6261 }
6262 else if (ppc_is_toc_sym (sym))
6263 {
6264 symbolS *next;
6265
6266 /* This is a TOC definition. x_scnlen is the size of the
6267 TOC entry. */
6268 next = symbol_next (sym);
6269 while (symbol_get_tc (next)->symbol_class == XMC_TC0)
6270 next = symbol_next (next);
6271 if (next == (symbolS *) NULL
6272 || (!ppc_is_toc_sym (next)))
6273 {
6274 if (ppc_after_toc_frag == (fragS *) NULL)
6275 a->u.auxent.x_csect.x_scnlen.u64
6276 = bfd_section_size (data_section) - S_GET_VALUE (sym);
6277 else
6278 a->u.auxent.x_csect.x_scnlen.u64
6279 = ppc_after_toc_frag->fr_address - S_GET_VALUE (sym);
6280 }
6281 else
6282 {
6283 resolve_symbol_value (next);
6284 a->u.auxent.x_csect.x_scnlen.u64
6285 = S_GET_VALUE (next) - S_GET_VALUE (sym);
6286 }
6287 a->u.auxent.x_csect.x_smtyp = (2 << 3) | XTY_SD;
6288 }
6289 else
6290 {
6291 symbolS *csect;
6292
6293 /* This is a normal symbol definition. x_scnlen is the
6294 symbol index of the containing csect. */
6295 if (S_GET_SEGMENT (sym) == text_section)
6296 csect = ppc_xcoff_text_section.csects;
6297 else if (S_GET_SEGMENT (sym) == data_section)
6298 csect = ppc_xcoff_data_section.csects;
6299 else if (S_GET_SEGMENT (sym) == ppc_xcoff_tdata_section.segment)
6300 csect = ppc_xcoff_tdata_section.csects;
6301 else
6302 abort ();
6303
6304 /* Skip the initial dummy symbol. */
6305 csect = symbol_get_tc (csect)->next;
6306
6307 if (csect == (symbolS *) NULL)
6308 {
6309 as_warn (_("warning: symbol %s has no csect"), S_GET_NAME (sym));
6310 a->u.auxent.x_csect.x_scnlen.u64 = 0;
6311 }
6312 else
6313 {
6314 while (symbol_get_tc (csect)->next != (symbolS *) NULL)
6315 {
6316 resolve_symbol_value (symbol_get_tc (csect)->next);
6317 if (S_GET_VALUE (symbol_get_tc (csect)->next)
6318 > S_GET_VALUE (sym))
6319 break;
6320 csect = symbol_get_tc (csect)->next;
6321 }
6322
6323 a->u.auxent.x_csect.x_scnlen.p
6324 = coffsymbol (symbol_get_bfdsym (csect))->native;
6325 a->fix_scnlen = 1;
6326 }
6327 a->u.auxent.x_csect.x_smtyp = XTY_LD;
6328 }
6329
6330 a->u.auxent.x_csect.x_parmhash = 0;
6331 a->u.auxent.x_csect.x_snhash = 0;
6332 if (symbol_get_tc (sym)->symbol_class == -1)
6333 a->u.auxent.x_csect.x_smclas = XMC_PR;
6334 else
6335 a->u.auxent.x_csect.x_smclas = symbol_get_tc (sym)->symbol_class;
6336 a->u.auxent.x_csect.x_stab = 0;
6337 a->u.auxent.x_csect.x_snstab = 0;
6338
6339 /* Don't let the COFF backend resort these symbols. */
6340 symbol_get_bfdsym (sym)->flags |= BSF_NOT_AT_END;
6341 }
6342 else if (S_GET_STORAGE_CLASS (sym) == C_BSTAT)
6343 {
6344 /* We want the value to be the symbol index of the referenced
6345 csect symbol. BFD will do that for us if we set the right
6346 flags. */
6347 asymbol *bsym = symbol_get_bfdsym (symbol_get_tc (sym)->within);
6348 combined_entry_type *c = coffsymbol (bsym)->native;
6349
6350 S_SET_VALUE (sym, (valueT) (size_t) c);
6351 coffsymbol (symbol_get_bfdsym (sym))->native->fix_value = 1;
6352 }
6353 else if (S_GET_STORAGE_CLASS (sym) == C_STSYM)
6354 {
6355 symbolS *block;
6356 valueT base;
6357
6358 block = symbol_get_tc (sym)->within;
6359 if (block)
6360 {
6361 /* The value is the offset from the enclosing csect. */
6362 symbolS *csect;
6363
6364 csect = symbol_get_tc (block)->within;
6365 resolve_symbol_value (csect);
6366 base = S_GET_VALUE (csect);
6367 }
6368 else
6369 base = 0;
6370
6371 S_SET_VALUE (sym, S_GET_VALUE (sym) - base);
6372 }
6373 else if (S_GET_STORAGE_CLASS (sym) == C_BINCL
6374 || S_GET_STORAGE_CLASS (sym) == C_EINCL)
6375 {
6376 /* We want the value to be a file offset into the line numbers.
6377 BFD will do that for us if we set the right flags. We have
6378 already set the value correctly. */
6379 coffsymbol (symbol_get_bfdsym (sym))->native->fix_line = 1;
6380 }
6381
6382 return 0;
6383 }
6384
6385 /* Adjust the symbol table. */
6386
6387 void
ppc_adjust_symtab(void)6388 ppc_adjust_symtab (void)
6389 {
6390 symbolS *sym;
6391 symbolS *anchorSym;
6392
6393 /* Make sure C_DWARF symbols come right after C_FILE.
6394 As the C_FILE might not be defined yet and as C_DWARF
6395 might already be ordered, we insert them before the
6396 first symbol which isn't a C_FILE or a C_DWARF. */
6397 for (anchorSym = symbol_rootP; anchorSym != NULL;
6398 anchorSym = symbol_next (anchorSym))
6399 {
6400 if (S_GET_STORAGE_CLASS (anchorSym) != C_FILE
6401 && S_GET_STORAGE_CLASS (anchorSym) != C_DWARF)
6402 break;
6403 }
6404
6405 sym = anchorSym;
6406 while (sym != NULL)
6407 {
6408 if (S_GET_STORAGE_CLASS (sym) != C_DWARF)
6409 {
6410 sym = symbol_next (sym);
6411 continue;
6412 }
6413
6414 symbolS* tsym = sym;
6415 sym = symbol_next (sym);
6416
6417 symbol_remove (tsym, &symbol_rootP, &symbol_lastP);
6418 symbol_insert (tsym, anchorSym, &symbol_rootP, &symbol_lastP);
6419 }
6420
6421 /* Create csect symbols for all absolute symbols. */
6422
6423 if (! ppc_saw_abs)
6424 return;
6425
6426 for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym))
6427 {
6428 symbolS *csect;
6429 int i;
6430 combined_entry_type *a;
6431
6432 if (S_GET_SEGMENT (sym) != absolute_section)
6433 continue;
6434
6435 csect = symbol_create (".abs[XO]", absolute_section,
6436 &zero_address_frag, S_GET_VALUE (sym));
6437 symbol_get_bfdsym (csect)->value = S_GET_VALUE (sym);
6438 S_SET_STORAGE_CLASS (csect, C_HIDEXT);
6439 i = S_GET_NUMBER_AUXILIARY (csect);
6440 S_SET_NUMBER_AUXILIARY (csect, i + 1);
6441 a = &coffsymbol (symbol_get_bfdsym (csect))->native[i + 1];
6442 a->u.auxent.x_csect.x_scnlen.u64 = 0;
6443 a->u.auxent.x_csect.x_smtyp = XTY_SD;
6444 a->u.auxent.x_csect.x_parmhash = 0;
6445 a->u.auxent.x_csect.x_snhash = 0;
6446 a->u.auxent.x_csect.x_smclas = XMC_XO;
6447 a->u.auxent.x_csect.x_stab = 0;
6448 a->u.auxent.x_csect.x_snstab = 0;
6449
6450 symbol_insert (csect, sym, &symbol_rootP, &symbol_lastP);
6451
6452 i = S_GET_NUMBER_AUXILIARY (sym);
6453 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i];
6454 a->u.auxent.x_csect.x_scnlen.p
6455 = coffsymbol (symbol_get_bfdsym (csect))->native;
6456 a->fix_scnlen = 1;
6457 }
6458
6459 ppc_saw_abs = false;
6460 }
6461
6462 /* Set the VMA for a section. This is called on all the sections in
6463 turn. */
6464
6465 void
ppc_frob_section(asection * sec)6466 ppc_frob_section (asection *sec)
6467 {
6468 static bfd_vma vma = 0;
6469
6470 /* Dwarf sections start at 0. */
6471 if (bfd_section_flags (sec) & SEC_DEBUGGING)
6472 return;
6473
6474 vma = md_section_align (sec, vma);
6475 bfd_set_section_vma (sec, vma);
6476 vma += bfd_section_size (sec);
6477 }
6478
6479 #endif /* OBJ_XCOFF */
6480
6481 const char *
md_atof(int type,char * litp,int * sizep)6482 md_atof (int type, char *litp, int *sizep)
6483 {
6484 return ieee_md_atof (type, litp, sizep, target_big_endian);
6485 }
6486
6487 /* Write a value out to the object file, using the appropriate
6488 endianness. */
6489
6490 void
md_number_to_chars(char * buf,valueT val,int n)6491 md_number_to_chars (char *buf, valueT val, int n)
6492 {
6493 if (target_big_endian)
6494 number_to_chars_bigendian (buf, val, n);
6495 else
6496 number_to_chars_littleendian (buf, val, n);
6497 }
6498
6499 /* Align a section (I don't know why this is machine dependent). */
6500
6501 valueT
md_section_align(asection * seg ATTRIBUTE_UNUSED,valueT addr)6502 md_section_align (asection *seg ATTRIBUTE_UNUSED, valueT addr)
6503 {
6504 #ifdef OBJ_ELF
6505 return addr;
6506 #else
6507 int align = bfd_section_alignment (seg);
6508
6509 return ((addr + (1 << align) - 1) & -(1 << align));
6510 #endif
6511 }
6512
6513 /* We don't have any form of relaxing. */
6514
6515 int
md_estimate_size_before_relax(fragS * fragp ATTRIBUTE_UNUSED,asection * seg ATTRIBUTE_UNUSED)6516 md_estimate_size_before_relax (fragS *fragp ATTRIBUTE_UNUSED,
6517 asection *seg ATTRIBUTE_UNUSED)
6518 {
6519 abort ();
6520 return 0;
6521 }
6522
6523 /* Convert a machine dependent frag. We never generate these. */
6524
6525 void
md_convert_frag(bfd * abfd ATTRIBUTE_UNUSED,asection * sec ATTRIBUTE_UNUSED,fragS * fragp ATTRIBUTE_UNUSED)6526 md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED,
6527 asection *sec ATTRIBUTE_UNUSED,
6528 fragS *fragp ATTRIBUTE_UNUSED)
6529 {
6530 abort ();
6531 }
6532
6533 /* We have no need to default values of symbols. */
6534
6535 symbolS *
md_undefined_symbol(char * name ATTRIBUTE_UNUSED)6536 md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
6537 {
6538 return 0;
6539 }
6540
6541 /* Functions concerning relocs. */
6542
6543 /* The location from which a PC relative jump should be calculated,
6544 given a PC relative reloc. */
6545
6546 long
md_pcrel_from_section(fixS * fixp,segT sec ATTRIBUTE_UNUSED)6547 md_pcrel_from_section (fixS *fixp, segT sec ATTRIBUTE_UNUSED)
6548 {
6549 return fixp->fx_frag->fr_address + fixp->fx_where;
6550 }
6551
6552 #ifdef OBJ_XCOFF
6553
6554 /* Return the surrending csect for sym when possible. */
6555
6556 static symbolS*
ppc_get_csect_to_adjust(symbolS * sym)6557 ppc_get_csect_to_adjust (symbolS *sym)
6558 {
6559 if (sym == NULL)
6560 return NULL;
6561
6562 valueT val = resolve_symbol_value (sym);
6563 TC_SYMFIELD_TYPE *tc = symbol_get_tc (sym);
6564 segT symseg = S_GET_SEGMENT (sym);
6565
6566 if (tc->subseg == 0
6567 && tc->symbol_class != XMC_TC0
6568 && tc->symbol_class != XMC_TC
6569 && tc->symbol_class != XMC_TE
6570 && symseg != bss_section
6571 && symseg != ppc_xcoff_tbss_section.segment
6572 /* Don't adjust if this is a reloc in the toc section. */
6573 && (symseg != data_section
6574 || ppc_toc_csect == NULL
6575 || val < ppc_toc_frag->fr_address
6576 || (ppc_after_toc_frag != NULL
6577 && val >= ppc_after_toc_frag->fr_address)))
6578 {
6579 symbolS* csect = tc->within;
6580
6581 /* If the symbol was not declared by a label (eg: a section symbol),
6582 use the section instead of the csect. This doesn't happen in
6583 normal AIX assembly code. */
6584 if (csect == NULL)
6585 csect = seg_info (symseg)->sym;
6586
6587 return csect;
6588 }
6589
6590 return NULL;
6591 }
6592
6593 /* This is called to see whether a fixup should be adjusted to use a
6594 section symbol. We take the opportunity to change a fixup against
6595 a symbol in the TOC subsegment into a reloc against the
6596 corresponding .tc symbol. */
6597
6598 int
ppc_fix_adjustable(fixS * fix)6599 ppc_fix_adjustable (fixS *fix)
6600 {
6601 valueT val = resolve_symbol_value (fix->fx_addsy);
6602 segT symseg = S_GET_SEGMENT (fix->fx_addsy);
6603 symbolS* csect;
6604
6605 if (symseg == absolute_section)
6606 return 0;
6607
6608 /* Always adjust symbols in debugging sections. */
6609 if (bfd_section_flags (symseg) & SEC_DEBUGGING)
6610 return 1;
6611
6612 if (ppc_toc_csect != (symbolS *) NULL
6613 && fix->fx_addsy != ppc_toc_csect
6614 && symseg == data_section
6615 && val >= ppc_toc_frag->fr_address
6616 && (ppc_after_toc_frag == (fragS *) NULL
6617 || val < ppc_after_toc_frag->fr_address))
6618 {
6619 symbolS *sy;
6620
6621 for (sy = symbol_next (ppc_toc_csect);
6622 sy != (symbolS *) NULL;
6623 sy = symbol_next (sy))
6624 {
6625 TC_SYMFIELD_TYPE *sy_tc = symbol_get_tc (sy);
6626
6627 if (sy_tc->symbol_class == XMC_TC0)
6628 continue;
6629 if (sy_tc->symbol_class != XMC_TC
6630 && sy_tc->symbol_class != XMC_TE)
6631 break;
6632 if (val == resolve_symbol_value (sy))
6633 {
6634 fix->fx_addsy = sy;
6635 fix->fx_addnumber = val - ppc_toc_frag->fr_address;
6636 return 0;
6637 }
6638 }
6639
6640 as_bad_where (fix->fx_file, fix->fx_line,
6641 _("symbol in .toc does not match any .tc"));
6642 }
6643
6644 /* Possibly adjust the reloc to be against the csect. */
6645 if ((csect = ppc_get_csect_to_adjust (fix->fx_addsy)) != NULL)
6646 {
6647 fix->fx_offset += val - symbol_get_frag (csect)->fr_address;
6648 fix->fx_addsy = csect;
6649 }
6650
6651 if ((csect = ppc_get_csect_to_adjust (fix->fx_subsy)) != NULL)
6652 {
6653 fix->fx_offset -= resolve_symbol_value (fix->fx_subsy)
6654 - symbol_get_frag (csect)->fr_address;
6655 fix->fx_subsy = csect;
6656 }
6657
6658 /* Adjust a reloc against a .lcomm symbol to be against the base
6659 .lcomm. */
6660 if (symseg == bss_section
6661 && ! S_IS_EXTERNAL (fix->fx_addsy)
6662 && symbol_get_tc (fix->fx_addsy)->subseg == 0)
6663 {
6664 symbolS *sy = symbol_get_frag (fix->fx_addsy)->fr_symbol;
6665
6666 fix->fx_offset += val - resolve_symbol_value (sy);
6667 fix->fx_addsy = sy;
6668 }
6669
6670 return 0;
6671 }
6672
6673 /* A reloc from one csect to another must be kept. The assembler
6674 will, of course, keep relocs between sections, and it will keep
6675 absolute relocs, but we need to force it to keep PC relative relocs
6676 between two csects in the same section. */
6677
6678 int
ppc_force_relocation(fixS * fix)6679 ppc_force_relocation (fixS *fix)
6680 {
6681 /* At this point fix->fx_addsy should already have been converted to
6682 a csect symbol. If the csect does not include the fragment, then
6683 we need to force the relocation. */
6684 if (fix->fx_pcrel
6685 && fix->fx_addsy != NULL
6686 && symbol_get_tc (fix->fx_addsy)->subseg != 0
6687 && ((symbol_get_frag (fix->fx_addsy)->fr_address
6688 > fix->fx_frag->fr_address)
6689 || (symbol_get_tc (fix->fx_addsy)->next != NULL
6690 && (symbol_get_frag (symbol_get_tc (fix->fx_addsy)->next)->fr_address
6691 <= fix->fx_frag->fr_address))))
6692 return 1;
6693
6694 return generic_force_reloc (fix);
6695 }
6696 #endif /* OBJ_XCOFF */
6697
6698 #ifdef OBJ_ELF
6699 /* If this function returns non-zero, it guarantees that a relocation
6700 will be emitted for a fixup. */
6701
6702 int
ppc_force_relocation(fixS * fix)6703 ppc_force_relocation (fixS *fix)
6704 {
6705 switch (fix->fx_r_type)
6706 {
6707 case BFD_RELOC_PPC_B16_BRTAKEN:
6708 case BFD_RELOC_PPC_B16_BRNTAKEN:
6709 case BFD_RELOC_PPC_BA16_BRTAKEN:
6710 case BFD_RELOC_PPC_BA16_BRNTAKEN:
6711 case BFD_RELOC_24_PLT_PCREL:
6712 case BFD_RELOC_PPC64_TOC:
6713 case BFD_RELOC_16_GOTOFF:
6714 case BFD_RELOC_LO16_GOTOFF:
6715 case BFD_RELOC_HI16_GOTOFF:
6716 case BFD_RELOC_HI16_S_GOTOFF:
6717 case BFD_RELOC_LO16_PLTOFF:
6718 case BFD_RELOC_HI16_PLTOFF:
6719 case BFD_RELOC_HI16_S_PLTOFF:
6720 case BFD_RELOC_GPREL16:
6721 case BFD_RELOC_16_BASEREL:
6722 case BFD_RELOC_LO16_BASEREL:
6723 case BFD_RELOC_HI16_BASEREL:
6724 case BFD_RELOC_HI16_S_BASEREL:
6725 case BFD_RELOC_PPC_TOC16:
6726 case BFD_RELOC_PPC64_TOC16_LO:
6727 case BFD_RELOC_PPC64_TOC16_HI:
6728 case BFD_RELOC_PPC64_TOC16_HA:
6729 case BFD_RELOC_PPC64_PLTGOT16:
6730 case BFD_RELOC_PPC64_PLTGOT16_LO:
6731 case BFD_RELOC_PPC64_PLTGOT16_HI:
6732 case BFD_RELOC_PPC64_PLTGOT16_HA:
6733 case BFD_RELOC_PPC64_GOT16_DS:
6734 case BFD_RELOC_PPC64_GOT16_LO_DS:
6735 case BFD_RELOC_PPC64_PLT16_LO_DS:
6736 case BFD_RELOC_PPC64_SECTOFF_DS:
6737 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
6738 case BFD_RELOC_PPC64_TOC16_DS:
6739 case BFD_RELOC_PPC64_TOC16_LO_DS:
6740 case BFD_RELOC_PPC64_PLTGOT16_DS:
6741 case BFD_RELOC_PPC64_PLTGOT16_LO_DS:
6742 case BFD_RELOC_PPC_EMB_NADDR16:
6743 case BFD_RELOC_PPC_EMB_NADDR16_LO:
6744 case BFD_RELOC_PPC_EMB_NADDR16_HI:
6745 case BFD_RELOC_PPC_EMB_NADDR16_HA:
6746 case BFD_RELOC_PPC_EMB_SDAI16:
6747 case BFD_RELOC_PPC_EMB_SDA2I16:
6748 case BFD_RELOC_PPC_EMB_SDA2REL:
6749 case BFD_RELOC_PPC_EMB_SDA21:
6750 case BFD_RELOC_PPC_EMB_MRKREF:
6751 case BFD_RELOC_PPC_EMB_RELSEC16:
6752 case BFD_RELOC_PPC_EMB_RELST_LO:
6753 case BFD_RELOC_PPC_EMB_RELST_HI:
6754 case BFD_RELOC_PPC_EMB_RELST_HA:
6755 case BFD_RELOC_PPC_EMB_BIT_FLD:
6756 case BFD_RELOC_PPC_EMB_RELSDA:
6757 case BFD_RELOC_PPC_VLE_SDA21:
6758 case BFD_RELOC_PPC_VLE_SDA21_LO:
6759 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
6760 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
6761 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
6762 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
6763 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
6764 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
6765 case BFD_RELOC_PPC64_PLT_PCREL34:
6766 case BFD_RELOC_PPC64_GOT_PCREL34:
6767 return 1;
6768 case BFD_RELOC_PPC_B26:
6769 case BFD_RELOC_PPC_BA26:
6770 case BFD_RELOC_PPC_B16:
6771 case BFD_RELOC_PPC_BA16:
6772 case BFD_RELOC_PPC64_REL24_NOTOC:
6773 case BFD_RELOC_PPC64_REL24_P9NOTOC:
6774 /* All branch fixups targeting a localentry symbol must
6775 force a relocation. */
6776 if (fix->fx_addsy)
6777 {
6778 asymbol *bfdsym = symbol_get_bfdsym (fix->fx_addsy);
6779 elf_symbol_type *elfsym = elf_symbol_from (bfdsym);
6780 gas_assert (elfsym);
6781 if ((STO_PPC64_LOCAL_MASK & elfsym->internal_elf_sym.st_other) != 0)
6782 return 1;
6783 }
6784 break;
6785 default:
6786 break;
6787 }
6788
6789 if (fix->fx_r_type >= BFD_RELOC_PPC_TLS
6790 && fix->fx_r_type <= BFD_RELOC_PPC64_TLS_PCREL)
6791 return 1;
6792
6793 return generic_force_reloc (fix);
6794 }
6795
6796 int
ppc_fix_adjustable(fixS * fix)6797 ppc_fix_adjustable (fixS *fix)
6798 {
6799 switch (fix->fx_r_type)
6800 {
6801 /* All branch fixups targeting a localentry symbol must
6802 continue using the symbol. */
6803 case BFD_RELOC_PPC_B26:
6804 case BFD_RELOC_PPC_BA26:
6805 case BFD_RELOC_PPC_B16:
6806 case BFD_RELOC_PPC_BA16:
6807 case BFD_RELOC_PPC_B16_BRTAKEN:
6808 case BFD_RELOC_PPC_B16_BRNTAKEN:
6809 case BFD_RELOC_PPC_BA16_BRTAKEN:
6810 case BFD_RELOC_PPC_BA16_BRNTAKEN:
6811 case BFD_RELOC_PPC64_REL24_NOTOC:
6812 case BFD_RELOC_PPC64_REL24_P9NOTOC:
6813 if (fix->fx_addsy)
6814 {
6815 asymbol *bfdsym = symbol_get_bfdsym (fix->fx_addsy);
6816 elf_symbol_type *elfsym = elf_symbol_from (bfdsym);
6817 gas_assert (elfsym);
6818 if ((STO_PPC64_LOCAL_MASK & elfsym->internal_elf_sym.st_other) != 0)
6819 return 0;
6820 }
6821 break;
6822 default:
6823 break;
6824 }
6825
6826 return (fix->fx_r_type != BFD_RELOC_16_GOTOFF
6827 && fix->fx_r_type != BFD_RELOC_LO16_GOTOFF
6828 && fix->fx_r_type != BFD_RELOC_HI16_GOTOFF
6829 && fix->fx_r_type != BFD_RELOC_HI16_S_GOTOFF
6830 && fix->fx_r_type != BFD_RELOC_PPC64_GOT16_DS
6831 && fix->fx_r_type != BFD_RELOC_PPC64_GOT16_LO_DS
6832 && fix->fx_r_type != BFD_RELOC_PPC64_GOT_PCREL34
6833 && fix->fx_r_type != BFD_RELOC_24_PLT_PCREL
6834 && fix->fx_r_type != BFD_RELOC_32_PLTOFF
6835 && fix->fx_r_type != BFD_RELOC_32_PLT_PCREL
6836 && fix->fx_r_type != BFD_RELOC_LO16_PLTOFF
6837 && fix->fx_r_type != BFD_RELOC_HI16_PLTOFF
6838 && fix->fx_r_type != BFD_RELOC_HI16_S_PLTOFF
6839 && fix->fx_r_type != BFD_RELOC_64_PLTOFF
6840 && fix->fx_r_type != BFD_RELOC_64_PLT_PCREL
6841 && fix->fx_r_type != BFD_RELOC_PPC64_PLT16_LO_DS
6842 && fix->fx_r_type != BFD_RELOC_PPC64_PLT_PCREL34
6843 && fix->fx_r_type != BFD_RELOC_PPC64_PLTGOT16
6844 && fix->fx_r_type != BFD_RELOC_PPC64_PLTGOT16_LO
6845 && fix->fx_r_type != BFD_RELOC_PPC64_PLTGOT16_HI
6846 && fix->fx_r_type != BFD_RELOC_PPC64_PLTGOT16_HA
6847 && fix->fx_r_type != BFD_RELOC_PPC64_PLTGOT16_DS
6848 && fix->fx_r_type != BFD_RELOC_PPC64_PLTGOT16_LO_DS
6849 && fix->fx_r_type != BFD_RELOC_GPREL16
6850 && fix->fx_r_type != BFD_RELOC_PPC_VLE_SDAREL_LO16A
6851 && fix->fx_r_type != BFD_RELOC_PPC_VLE_SDAREL_HI16A
6852 && fix->fx_r_type != BFD_RELOC_PPC_VLE_SDAREL_HA16A
6853 && fix->fx_r_type != BFD_RELOC_VTABLE_INHERIT
6854 && fix->fx_r_type != BFD_RELOC_VTABLE_ENTRY
6855 && !(fix->fx_r_type >= BFD_RELOC_PPC_TLS
6856 && fix->fx_r_type <= BFD_RELOC_PPC64_TLS_PCREL));
6857 }
6858 #endif
6859
6860 void
ppc_frag_check(struct frag * fragP)6861 ppc_frag_check (struct frag *fragP)
6862 {
6863 if ((fragP->fr_address & fragP->insn_addr) != 0)
6864 as_bad_where (fragP->fr_file, fragP->fr_line,
6865 _("instruction address is not a multiple of %d"),
6866 fragP->insn_addr + 1);
6867 }
6868
6869 /* rs_align_code frag handling. */
6870
6871 enum ppc_nop_encoding_for_rs_align_code
6872 {
6873 PPC_NOP_VANILLA,
6874 PPC_NOP_VLE,
6875 PPC_NOP_GROUP_P6,
6876 PPC_NOP_GROUP_P7
6877 };
6878
6879 unsigned int
ppc_nop_select(void)6880 ppc_nop_select (void)
6881 {
6882 if ((ppc_cpu & PPC_OPCODE_VLE) != 0)
6883 return PPC_NOP_VLE;
6884 if ((ppc_cpu & (PPC_OPCODE_POWER9 | PPC_OPCODE_E500MC)) == 0)
6885 {
6886 if ((ppc_cpu & PPC_OPCODE_POWER7) != 0)
6887 return PPC_NOP_GROUP_P7;
6888 if ((ppc_cpu & PPC_OPCODE_POWER6) != 0)
6889 return PPC_NOP_GROUP_P6;
6890 }
6891 return PPC_NOP_VANILLA;
6892 }
6893
6894 void
ppc_handle_align(struct frag * fragP)6895 ppc_handle_align (struct frag *fragP)
6896 {
6897 valueT count = (fragP->fr_next->fr_address
6898 - (fragP->fr_address + fragP->fr_fix));
6899 char *dest = fragP->fr_literal + fragP->fr_fix;
6900 enum ppc_nop_encoding_for_rs_align_code nop_select = *dest & 0xff;
6901
6902 /* Pad with zeros if not inserting a whole number of instructions.
6903 We could pad with zeros up to an instruction boundary then follow
6904 with nops but odd counts indicate data in an executable section
6905 so padding with zeros is most appropriate. */
6906 if (count == 0
6907 || (nop_select == PPC_NOP_VLE ? (count & 1) != 0 : (count & 3) != 0))
6908 {
6909 *dest = 0;
6910 return;
6911 }
6912
6913 if (nop_select == PPC_NOP_VLE)
6914 {
6915
6916 fragP->fr_var = 2;
6917 md_number_to_chars (dest, 0x4400, 2);
6918 }
6919 else
6920 {
6921 fragP->fr_var = 4;
6922
6923 if (count > 4 * nop_limit && count < 0x2000000)
6924 {
6925 struct frag *rest;
6926
6927 /* Make a branch, then follow with nops. Insert another
6928 frag to handle the nops. */
6929 md_number_to_chars (dest, 0x48000000 + count, 4);
6930 count -= 4;
6931 if (count == 0)
6932 return;
6933
6934 rest = xmalloc (SIZEOF_STRUCT_FRAG + 4);
6935 memcpy (rest, fragP, SIZEOF_STRUCT_FRAG);
6936 fragP->fr_next = rest;
6937 fragP = rest;
6938 rest->fr_address += rest->fr_fix + 4;
6939 rest->fr_fix = 0;
6940 /* If we leave the next frag as rs_align_code we'll come here
6941 again, resulting in a bunch of branches rather than a
6942 branch followed by nops. */
6943 rest->fr_type = rs_align;
6944 dest = rest->fr_literal;
6945 }
6946
6947 md_number_to_chars (dest, 0x60000000, 4);
6948
6949 if (nop_select >= PPC_NOP_GROUP_P6)
6950 {
6951 /* For power6, power7, and power8, we want the last nop to
6952 be a group terminating one. Do this by inserting an
6953 rs_fill frag immediately after this one, with its address
6954 set to the last nop location. This will automatically
6955 reduce the number of nops in the current frag by one. */
6956 if (count > 4)
6957 {
6958 struct frag *group_nop = xmalloc (SIZEOF_STRUCT_FRAG + 4);
6959
6960 memcpy (group_nop, fragP, SIZEOF_STRUCT_FRAG);
6961 group_nop->fr_address = group_nop->fr_next->fr_address - 4;
6962 group_nop->fr_fix = 0;
6963 group_nop->fr_offset = 1;
6964 group_nop->fr_type = rs_fill;
6965 fragP->fr_next = group_nop;
6966 dest = group_nop->fr_literal;
6967 }
6968
6969 if (nop_select == PPC_NOP_GROUP_P6)
6970 /* power6 group terminating nop: "ori 1,1,0". */
6971 md_number_to_chars (dest, 0x60210000, 4);
6972 else
6973 /* power7/power8 group terminating nop: "ori 2,2,0". */
6974 md_number_to_chars (dest, 0x60420000, 4);
6975 }
6976 }
6977 }
6978
6979 /* Apply a fixup to the object code. This is called for all the
6980 fixups we generated by the calls to fix_new_exp, above. */
6981
6982 void
md_apply_fix(fixS * fixP,valueT * valP,segT seg)6983 md_apply_fix (fixS *fixP, valueT *valP, segT seg)
6984 {
6985 valueT value = * valP;
6986 offsetT fieldval;
6987 const struct powerpc_operand *operand;
6988
6989 #ifdef OBJ_ELF
6990 if (fixP->fx_addsy != NULL)
6991 {
6992 /* Hack around bfd_install_relocation brain damage. */
6993 if (fixP->fx_pcrel)
6994 value += fixP->fx_frag->fr_address + fixP->fx_where;
6995
6996 if (fixP->fx_addsy == abs_section_sym)
6997 fixP->fx_done = 1;
6998 }
6999 else
7000 fixP->fx_done = 1;
7001 #else
7002 /* FIXME FIXME FIXME: The value we are passed in *valP includes
7003 the symbol values. If we are doing this relocation the code in
7004 write.c is going to call bfd_install_relocation, which is also
7005 going to use the symbol value. That means that if the reloc is
7006 fully resolved we want to use *valP since bfd_install_relocation is
7007 not being used.
7008 However, if the reloc is not fully resolved we do not want to
7009 use *valP, and must use fx_offset instead. If the relocation
7010 is PC-relative, we then need to re-apply md_pcrel_from_section
7011 to this new relocation value. */
7012 if (fixP->fx_addsy == (symbolS *) NULL)
7013 fixP->fx_done = 1;
7014
7015 else
7016 {
7017 value = fixP->fx_offset;
7018 if (fixP->fx_pcrel)
7019 value -= md_pcrel_from_section (fixP, seg);
7020 }
7021 #endif
7022
7023 /* We are only able to convert some relocs to pc-relative. */
7024 if (fixP->fx_pcrel)
7025 {
7026 switch (fixP->fx_r_type)
7027 {
7028 case BFD_RELOC_64:
7029 fixP->fx_r_type = BFD_RELOC_64_PCREL;
7030 break;
7031
7032 case BFD_RELOC_32:
7033 fixP->fx_r_type = BFD_RELOC_32_PCREL;
7034 break;
7035
7036 case BFD_RELOC_16:
7037 fixP->fx_r_type = BFD_RELOC_16_PCREL;
7038 break;
7039
7040 case BFD_RELOC_LO16:
7041 fixP->fx_r_type = BFD_RELOC_LO16_PCREL;
7042 break;
7043
7044 case BFD_RELOC_HI16:
7045 fixP->fx_r_type = BFD_RELOC_HI16_PCREL;
7046 break;
7047
7048 case BFD_RELOC_HI16_S:
7049 fixP->fx_r_type = BFD_RELOC_HI16_S_PCREL;
7050 break;
7051
7052 case BFD_RELOC_PPC64_ADDR16_HIGH:
7053 fixP->fx_r_type = BFD_RELOC_PPC64_REL16_HIGH;
7054 break;
7055
7056 case BFD_RELOC_PPC64_ADDR16_HIGHA:
7057 fixP->fx_r_type = BFD_RELOC_PPC64_REL16_HIGHA;
7058 break;
7059
7060 case BFD_RELOC_PPC64_HIGHER:
7061 fixP->fx_r_type = BFD_RELOC_PPC64_REL16_HIGHER;
7062 break;
7063
7064 case BFD_RELOC_PPC64_HIGHER_S:
7065 fixP->fx_r_type = BFD_RELOC_PPC64_REL16_HIGHERA;
7066 break;
7067
7068 case BFD_RELOC_PPC64_HIGHEST:
7069 fixP->fx_r_type = BFD_RELOC_PPC64_REL16_HIGHEST;
7070 break;
7071
7072 case BFD_RELOC_PPC64_HIGHEST_S:
7073 fixP->fx_r_type = BFD_RELOC_PPC64_REL16_HIGHESTA;
7074 break;
7075
7076 case BFD_RELOC_PPC64_ADDR16_HIGHER34:
7077 fixP->fx_r_type = BFD_RELOC_PPC64_REL16_HIGHER34;
7078 break;
7079
7080 case BFD_RELOC_PPC64_ADDR16_HIGHERA34:
7081 fixP->fx_r_type = BFD_RELOC_PPC64_REL16_HIGHERA34;
7082 break;
7083
7084 case BFD_RELOC_PPC64_ADDR16_HIGHEST34:
7085 fixP->fx_r_type = BFD_RELOC_PPC64_REL16_HIGHEST34;
7086 break;
7087
7088 case BFD_RELOC_PPC64_ADDR16_HIGHESTA34:
7089 fixP->fx_r_type = BFD_RELOC_PPC64_REL16_HIGHESTA34;
7090 break;
7091
7092 case BFD_RELOC_PPC_16DX_HA:
7093 fixP->fx_r_type = BFD_RELOC_PPC_REL16DX_HA;
7094 break;
7095
7096 case BFD_RELOC_PPC64_D34:
7097 fixP->fx_r_type = BFD_RELOC_PPC64_PCREL34;
7098 break;
7099
7100 case BFD_RELOC_PPC64_D28:
7101 fixP->fx_r_type = BFD_RELOC_PPC64_PCREL28;
7102 break;
7103
7104 default:
7105 break;
7106 }
7107 }
7108 else if (!fixP->fx_done
7109 && fixP->fx_r_type == BFD_RELOC_PPC_16DX_HA)
7110 {
7111 /* addpcis is relative to next insn address. */
7112 value -= 4;
7113 fixP->fx_r_type = BFD_RELOC_PPC_REL16DX_HA;
7114 fixP->fx_pcrel = 1;
7115 }
7116
7117 operand = NULL;
7118 if (fixP->fx_pcrel_adjust != 0)
7119 {
7120 /* This is a fixup on an instruction. */
7121 ppc_opindex_t opindex = fixP->fx_pcrel_adjust & PPC_OPINDEX_MAX;
7122
7123 operand = &powerpc_operands[opindex];
7124 #ifdef OBJ_XCOFF
7125 /* An instruction like `lwz 9,sym(30)' when `sym' is not a TOC symbol
7126 does not generate a reloc. It uses the offset of `sym' within its
7127 csect. Other usages, such as `.long sym', generate relocs. This
7128 is the documented behaviour of non-TOC symbols. */
7129 if ((operand->flags & PPC_OPERAND_PARENS) != 0
7130 && (operand->bitm & 0xfff0) == 0xfff0
7131 && operand->shift == 0
7132 && (operand->insert == NULL || ppc_obj64)
7133 && fixP->fx_addsy != NULL
7134 && symbol_get_tc (fixP->fx_addsy)->subseg != 0
7135 && !ppc_is_toc_sym (fixP->fx_addsy)
7136 && S_GET_SEGMENT (fixP->fx_addsy) != bss_section)
7137 {
7138 value = fixP->fx_offset;
7139 fixP->fx_done = 1;
7140 }
7141
7142 /* During parsing of instructions, a TOC16 reloc is generated for
7143 instructions such as 'lwz RT,SYM(RB)' if SYM is a symbol defined
7144 in the toc. But at parse time, SYM may be not yet defined, so
7145 check again here. */
7146 if (fixP->fx_r_type == BFD_RELOC_16
7147 && fixP->fx_addsy != NULL
7148 && ppc_is_toc_sym (fixP->fx_addsy))
7149 fixP->fx_r_type = BFD_RELOC_PPC_TOC16;
7150 #endif
7151 }
7152
7153 /* Calculate value to be stored in field. */
7154 fieldval = value;
7155 switch (fixP->fx_r_type)
7156 {
7157 #ifdef OBJ_ELF
7158 case BFD_RELOC_PPC64_ADDR16_LO_DS:
7159 case BFD_RELOC_PPC_VLE_LO16A:
7160 case BFD_RELOC_PPC_VLE_LO16D:
7161 #endif
7162 case BFD_RELOC_LO16:
7163 case BFD_RELOC_LO16_PCREL:
7164 fieldval = value & 0xffff;
7165 sign_extend_16:
7166 if (operand != NULL && (operand->flags & PPC_OPERAND_SIGNED) != 0)
7167 fieldval = SEX16 (fieldval);
7168 fixP->fx_no_overflow = 1;
7169 break;
7170
7171 case BFD_RELOC_HI16:
7172 case BFD_RELOC_HI16_PCREL:
7173 #ifdef OBJ_ELF
7174 if (REPORT_OVERFLOW_HI && ppc_obj64)
7175 {
7176 fieldval = value >> 16;
7177 if (operand != NULL && (operand->flags & PPC_OPERAND_SIGNED) != 0)
7178 {
7179 valueT sign = (((valueT) -1 >> 16) + 1) >> 1;
7180 fieldval = ((valueT) fieldval ^ sign) - sign;
7181 }
7182 break;
7183 }
7184 /* Fallthru */
7185
7186 case BFD_RELOC_PPC_VLE_HI16A:
7187 case BFD_RELOC_PPC_VLE_HI16D:
7188 case BFD_RELOC_PPC64_ADDR16_HIGH:
7189 #endif
7190 fieldval = PPC_HI (value);
7191 goto sign_extend_16;
7192
7193 case BFD_RELOC_HI16_S:
7194 case BFD_RELOC_HI16_S_PCREL:
7195 case BFD_RELOC_PPC_16DX_HA:
7196 case BFD_RELOC_PPC_REL16DX_HA:
7197 #ifdef OBJ_ELF
7198 if (REPORT_OVERFLOW_HI && ppc_obj64)
7199 {
7200 fieldval = (value + 0x8000) >> 16;
7201 if (operand != NULL && (operand->flags & PPC_OPERAND_SIGNED) != 0)
7202 {
7203 valueT sign = (((valueT) -1 >> 16) + 1) >> 1;
7204 fieldval = ((valueT) fieldval ^ sign) - sign;
7205 }
7206 break;
7207 }
7208 /* Fallthru */
7209
7210 case BFD_RELOC_PPC_VLE_HA16A:
7211 case BFD_RELOC_PPC_VLE_HA16D:
7212 case BFD_RELOC_PPC64_ADDR16_HIGHA:
7213 #endif
7214 fieldval = PPC_HA (value);
7215 goto sign_extend_16;
7216
7217 #ifdef OBJ_ELF
7218 case BFD_RELOC_PPC64_HIGHER:
7219 fieldval = PPC_HIGHER (value);
7220 goto sign_extend_16;
7221
7222 case BFD_RELOC_PPC64_HIGHER_S:
7223 fieldval = PPC_HIGHERA (value);
7224 goto sign_extend_16;
7225
7226 case BFD_RELOC_PPC64_HIGHEST:
7227 fieldval = PPC_HIGHEST (value);
7228 goto sign_extend_16;
7229
7230 case BFD_RELOC_PPC64_HIGHEST_S:
7231 fieldval = PPC_HIGHESTA (value);
7232 goto sign_extend_16;
7233 #endif
7234
7235 default:
7236 break;
7237 }
7238
7239 if (operand != NULL)
7240 {
7241 /* Handle relocs in an insn. */
7242 switch (fixP->fx_r_type)
7243 {
7244 #ifdef OBJ_ELF
7245 /* The following relocs can't be calculated by the assembler.
7246 Leave the field zero. */
7247 case BFD_RELOC_PPC_TPREL16:
7248 case BFD_RELOC_PPC_TPREL16_LO:
7249 case BFD_RELOC_PPC_TPREL16_HI:
7250 case BFD_RELOC_PPC_TPREL16_HA:
7251 case BFD_RELOC_PPC_DTPREL16:
7252 case BFD_RELOC_PPC_DTPREL16_LO:
7253 case BFD_RELOC_PPC_DTPREL16_HI:
7254 case BFD_RELOC_PPC_DTPREL16_HA:
7255 case BFD_RELOC_PPC_GOT_TLSGD16:
7256 case BFD_RELOC_PPC_GOT_TLSGD16_LO:
7257 case BFD_RELOC_PPC_GOT_TLSGD16_HI:
7258 case BFD_RELOC_PPC_GOT_TLSGD16_HA:
7259 case BFD_RELOC_PPC_GOT_TLSLD16:
7260 case BFD_RELOC_PPC_GOT_TLSLD16_LO:
7261 case BFD_RELOC_PPC_GOT_TLSLD16_HI:
7262 case BFD_RELOC_PPC_GOT_TLSLD16_HA:
7263 case BFD_RELOC_PPC_GOT_TPREL16:
7264 case BFD_RELOC_PPC_GOT_TPREL16_LO:
7265 case BFD_RELOC_PPC_GOT_TPREL16_HI:
7266 case BFD_RELOC_PPC_GOT_TPREL16_HA:
7267 case BFD_RELOC_PPC_GOT_DTPREL16:
7268 case BFD_RELOC_PPC_GOT_DTPREL16_LO:
7269 case BFD_RELOC_PPC_GOT_DTPREL16_HI:
7270 case BFD_RELOC_PPC_GOT_DTPREL16_HA:
7271 case BFD_RELOC_PPC64_TPREL16_DS:
7272 case BFD_RELOC_PPC64_TPREL16_LO_DS:
7273 case BFD_RELOC_PPC64_TPREL16_HIGH:
7274 case BFD_RELOC_PPC64_TPREL16_HIGHA:
7275 case BFD_RELOC_PPC64_TPREL16_HIGHER:
7276 case BFD_RELOC_PPC64_TPREL16_HIGHERA:
7277 case BFD_RELOC_PPC64_TPREL16_HIGHEST:
7278 case BFD_RELOC_PPC64_TPREL16_HIGHESTA:
7279 case BFD_RELOC_PPC64_DTPREL16_HIGH:
7280 case BFD_RELOC_PPC64_DTPREL16_HIGHA:
7281 case BFD_RELOC_PPC64_DTPREL16_DS:
7282 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
7283 case BFD_RELOC_PPC64_DTPREL16_HIGHER:
7284 case BFD_RELOC_PPC64_DTPREL16_HIGHERA:
7285 case BFD_RELOC_PPC64_DTPREL16_HIGHEST:
7286 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA:
7287 case BFD_RELOC_PPC64_TPREL34:
7288 case BFD_RELOC_PPC64_DTPREL34:
7289 case BFD_RELOC_PPC64_GOT_TLSGD_PCREL34:
7290 case BFD_RELOC_PPC64_GOT_TLSLD_PCREL34:
7291 case BFD_RELOC_PPC64_GOT_TPREL_PCREL34:
7292 case BFD_RELOC_PPC64_GOT_DTPREL_PCREL34:
7293 gas_assert (fixP->fx_addsy != NULL);
7294 S_SET_THREAD_LOCAL (fixP->fx_addsy);
7295 fieldval = 0;
7296 break;
7297
7298 /* These also should leave the field zero for the same
7299 reason. Note that older versions of gas wrote values
7300 here. If we want to go back to the old behaviour, then
7301 all _LO and _LO_DS cases will need to be treated like
7302 BFD_RELOC_LO16_PCREL above. Similarly for _HI etc. */
7303 case BFD_RELOC_16_GOTOFF:
7304 case BFD_RELOC_LO16_GOTOFF:
7305 case BFD_RELOC_HI16_GOTOFF:
7306 case BFD_RELOC_HI16_S_GOTOFF:
7307 case BFD_RELOC_LO16_PLTOFF:
7308 case BFD_RELOC_HI16_PLTOFF:
7309 case BFD_RELOC_HI16_S_PLTOFF:
7310 case BFD_RELOC_GPREL16:
7311 case BFD_RELOC_16_BASEREL:
7312 case BFD_RELOC_LO16_BASEREL:
7313 case BFD_RELOC_HI16_BASEREL:
7314 case BFD_RELOC_HI16_S_BASEREL:
7315 case BFD_RELOC_PPC_TOC16:
7316 case BFD_RELOC_PPC64_TOC16_LO:
7317 case BFD_RELOC_PPC64_TOC16_HI:
7318 case BFD_RELOC_PPC64_TOC16_HA:
7319 case BFD_RELOC_PPC64_PLTGOT16:
7320 case BFD_RELOC_PPC64_PLTGOT16_LO:
7321 case BFD_RELOC_PPC64_PLTGOT16_HI:
7322 case BFD_RELOC_PPC64_PLTGOT16_HA:
7323 case BFD_RELOC_PPC64_GOT16_DS:
7324 case BFD_RELOC_PPC64_GOT16_LO_DS:
7325 case BFD_RELOC_PPC64_PLT16_LO_DS:
7326 case BFD_RELOC_PPC64_SECTOFF_DS:
7327 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
7328 case BFD_RELOC_PPC64_TOC16_DS:
7329 case BFD_RELOC_PPC64_TOC16_LO_DS:
7330 case BFD_RELOC_PPC64_PLTGOT16_DS:
7331 case BFD_RELOC_PPC64_PLTGOT16_LO_DS:
7332 case BFD_RELOC_PPC_EMB_NADDR16:
7333 case BFD_RELOC_PPC_EMB_NADDR16_LO:
7334 case BFD_RELOC_PPC_EMB_NADDR16_HI:
7335 case BFD_RELOC_PPC_EMB_NADDR16_HA:
7336 case BFD_RELOC_PPC_EMB_SDAI16:
7337 case BFD_RELOC_PPC_EMB_SDA2I16:
7338 case BFD_RELOC_PPC_EMB_SDA2REL:
7339 case BFD_RELOC_PPC_EMB_SDA21:
7340 case BFD_RELOC_PPC_EMB_MRKREF:
7341 case BFD_RELOC_PPC_EMB_RELSEC16:
7342 case BFD_RELOC_PPC_EMB_RELST_LO:
7343 case BFD_RELOC_PPC_EMB_RELST_HI:
7344 case BFD_RELOC_PPC_EMB_RELST_HA:
7345 case BFD_RELOC_PPC_EMB_BIT_FLD:
7346 case BFD_RELOC_PPC_EMB_RELSDA:
7347 case BFD_RELOC_PPC_VLE_SDA21:
7348 case BFD_RELOC_PPC_VLE_SDA21_LO:
7349 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
7350 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
7351 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
7352 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
7353 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
7354 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
7355 case BFD_RELOC_PPC64_GOT_PCREL34:
7356 case BFD_RELOC_PPC64_PLT_PCREL34:
7357 gas_assert (fixP->fx_addsy != NULL);
7358 /* Fallthru */
7359
7360 case BFD_RELOC_PPC_TLS:
7361 case BFD_RELOC_PPC_TLSGD:
7362 case BFD_RELOC_PPC_TLSLD:
7363 case BFD_RELOC_PPC64_TLS_PCREL:
7364 fieldval = 0;
7365 break;
7366 #endif
7367
7368 #ifdef OBJ_XCOFF
7369 case BFD_RELOC_PPC_B16:
7370 /* Adjust the offset to the instruction boundary. */
7371 fieldval += 2;
7372 break;
7373 #endif
7374
7375 case BFD_RELOC_VTABLE_INHERIT:
7376 case BFD_RELOC_VTABLE_ENTRY:
7377 case BFD_RELOC_PPC_DTPMOD:
7378 case BFD_RELOC_PPC_TPREL:
7379 case BFD_RELOC_PPC_DTPREL:
7380 case BFD_RELOC_PPC_COPY:
7381 case BFD_RELOC_PPC_GLOB_DAT:
7382 case BFD_RELOC_32_PLT_PCREL:
7383 case BFD_RELOC_PPC_EMB_NADDR32:
7384 case BFD_RELOC_PPC64_TOC:
7385 case BFD_RELOC_CTOR:
7386 case BFD_RELOC_32:
7387 case BFD_RELOC_32_PCREL:
7388 case BFD_RELOC_RVA:
7389 case BFD_RELOC_64:
7390 case BFD_RELOC_64_PCREL:
7391 case BFD_RELOC_PPC64_ADDR64_LOCAL:
7392 as_bad_where (fixP->fx_file, fixP->fx_line,
7393 _("%s unsupported as instruction fixup"),
7394 bfd_get_reloc_code_name (fixP->fx_r_type));
7395 fixP->fx_done = 1;
7396 return;
7397
7398 default:
7399 break;
7400 }
7401
7402 #ifdef OBJ_ELF
7403 /* powerpc uses RELA style relocs, so if emitting a reloc the field
7404 contents can stay at zero. */
7405 #define APPLY_RELOC fixP->fx_done
7406 #else
7407 #define APPLY_RELOC 1
7408 #endif
7409 /* We need to call the insert function even when fieldval is
7410 zero if the insert function would translate that zero to a
7411 bit pattern other than all zeros. */
7412 if ((fieldval != 0 && APPLY_RELOC) || operand->insert != NULL)
7413 {
7414 uint64_t insn;
7415 unsigned char *where;
7416
7417 /* Fetch the instruction, insert the fully resolved operand
7418 value, and stuff the instruction back again. */
7419 where = (unsigned char *) fixP->fx_frag->fr_literal + fixP->fx_where;
7420 if (target_big_endian)
7421 {
7422 if (fixP->fx_size < 4)
7423 insn = bfd_getb16 (where);
7424 else
7425 {
7426 insn = bfd_getb32 (where);
7427 if (fixP->fx_size > 4)
7428 insn = insn << 32 | bfd_getb32 (where + 4);
7429 }
7430 }
7431 else
7432 {
7433 if (fixP->fx_size < 4)
7434 insn = bfd_getl16 (where);
7435 else
7436 {
7437 insn = bfd_getl32 (where);
7438 if (fixP->fx_size > 4)
7439 insn = insn << 32 | bfd_getl32 (where + 4);
7440 }
7441 }
7442 insn = ppc_insert_operand (insn, operand, fieldval,
7443 fixP->tc_fix_data.ppc_cpu,
7444 fixP->fx_file, fixP->fx_line);
7445 if (target_big_endian)
7446 {
7447 if (fixP->fx_size < 4)
7448 bfd_putb16 (insn, where);
7449 else
7450 {
7451 if (fixP->fx_size > 4)
7452 {
7453 bfd_putb32 (insn, where + 4);
7454 insn >>= 32;
7455 }
7456 bfd_putb32 (insn, where);
7457 }
7458 }
7459 else
7460 {
7461 if (fixP->fx_size < 4)
7462 bfd_putl16 (insn, where);
7463 else
7464 {
7465 if (fixP->fx_size > 4)
7466 {
7467 bfd_putl32 (insn, where + 4);
7468 insn >>= 32;
7469 }
7470 bfd_putl32 (insn, where);
7471 }
7472 }
7473 }
7474
7475 if (fixP->fx_done)
7476 /* Nothing else to do here. */
7477 return;
7478
7479 gas_assert (fixP->fx_addsy != NULL);
7480 if (fixP->fx_r_type == BFD_RELOC_NONE)
7481 {
7482 const char *sfile;
7483 unsigned int sline;
7484
7485 /* Use expr_symbol_where to see if this is an expression
7486 symbol. */
7487 if (expr_symbol_where (fixP->fx_addsy, &sfile, &sline))
7488 as_bad_where (fixP->fx_file, fixP->fx_line,
7489 _("unresolved expression that must be resolved"));
7490 else
7491 as_bad_where (fixP->fx_file, fixP->fx_line,
7492 _("unsupported relocation against %s"),
7493 S_GET_NAME (fixP->fx_addsy));
7494 fixP->fx_done = 1;
7495 return;
7496 }
7497 }
7498 else
7499 {
7500 /* Handle relocs in data. */
7501 switch (fixP->fx_r_type)
7502 {
7503 case BFD_RELOC_VTABLE_INHERIT:
7504 if (fixP->fx_addsy
7505 && !S_IS_DEFINED (fixP->fx_addsy)
7506 && !S_IS_WEAK (fixP->fx_addsy))
7507 S_SET_WEAK (fixP->fx_addsy);
7508 /* Fallthru */
7509
7510 case BFD_RELOC_VTABLE_ENTRY:
7511 fixP->fx_done = 0;
7512 break;
7513
7514 #ifdef OBJ_ELF
7515 /* These can appear with @l etc. in data. */
7516 case BFD_RELOC_LO16:
7517 case BFD_RELOC_LO16_PCREL:
7518 case BFD_RELOC_HI16:
7519 case BFD_RELOC_HI16_PCREL:
7520 case BFD_RELOC_HI16_S:
7521 case BFD_RELOC_HI16_S_PCREL:
7522 case BFD_RELOC_PPC64_HIGHER:
7523 case BFD_RELOC_PPC64_HIGHER_S:
7524 case BFD_RELOC_PPC64_HIGHEST:
7525 case BFD_RELOC_PPC64_HIGHEST_S:
7526 case BFD_RELOC_PPC64_ADDR16_HIGH:
7527 case BFD_RELOC_PPC64_ADDR16_HIGHA:
7528 case BFD_RELOC_PPC64_ADDR64_LOCAL:
7529 break;
7530
7531 case BFD_RELOC_PPC_DTPMOD:
7532 case BFD_RELOC_PPC_TPREL:
7533 case BFD_RELOC_PPC_DTPREL:
7534 S_SET_THREAD_LOCAL (fixP->fx_addsy);
7535 break;
7536
7537 /* Just punt all of these to the linker. */
7538 case BFD_RELOC_PPC_B16_BRTAKEN:
7539 case BFD_RELOC_PPC_B16_BRNTAKEN:
7540 case BFD_RELOC_16_GOTOFF:
7541 case BFD_RELOC_LO16_GOTOFF:
7542 case BFD_RELOC_HI16_GOTOFF:
7543 case BFD_RELOC_HI16_S_GOTOFF:
7544 case BFD_RELOC_LO16_PLTOFF:
7545 case BFD_RELOC_HI16_PLTOFF:
7546 case BFD_RELOC_HI16_S_PLTOFF:
7547 case BFD_RELOC_PPC_COPY:
7548 case BFD_RELOC_PPC_GLOB_DAT:
7549 case BFD_RELOC_16_BASEREL:
7550 case BFD_RELOC_LO16_BASEREL:
7551 case BFD_RELOC_HI16_BASEREL:
7552 case BFD_RELOC_HI16_S_BASEREL:
7553 case BFD_RELOC_PPC_TLS:
7554 case BFD_RELOC_PPC_DTPREL16_LO:
7555 case BFD_RELOC_PPC_DTPREL16_HI:
7556 case BFD_RELOC_PPC_DTPREL16_HA:
7557 case BFD_RELOC_PPC_TPREL16_LO:
7558 case BFD_RELOC_PPC_TPREL16_HI:
7559 case BFD_RELOC_PPC_TPREL16_HA:
7560 case BFD_RELOC_PPC_GOT_TLSGD16:
7561 case BFD_RELOC_PPC_GOT_TLSGD16_LO:
7562 case BFD_RELOC_PPC_GOT_TLSGD16_HI:
7563 case BFD_RELOC_PPC_GOT_TLSGD16_HA:
7564 case BFD_RELOC_PPC_GOT_TLSLD16:
7565 case BFD_RELOC_PPC_GOT_TLSLD16_LO:
7566 case BFD_RELOC_PPC_GOT_TLSLD16_HI:
7567 case BFD_RELOC_PPC_GOT_TLSLD16_HA:
7568 case BFD_RELOC_PPC_GOT_DTPREL16:
7569 case BFD_RELOC_PPC_GOT_DTPREL16_LO:
7570 case BFD_RELOC_PPC_GOT_DTPREL16_HI:
7571 case BFD_RELOC_PPC_GOT_DTPREL16_HA:
7572 case BFD_RELOC_PPC_GOT_TPREL16:
7573 case BFD_RELOC_PPC_GOT_TPREL16_LO:
7574 case BFD_RELOC_PPC_GOT_TPREL16_HI:
7575 case BFD_RELOC_PPC_GOT_TPREL16_HA:
7576 case BFD_RELOC_24_PLT_PCREL:
7577 case BFD_RELOC_PPC_LOCAL24PC:
7578 case BFD_RELOC_32_PLT_PCREL:
7579 case BFD_RELOC_GPREL16:
7580 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
7581 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
7582 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
7583 case BFD_RELOC_PPC_EMB_NADDR32:
7584 case BFD_RELOC_PPC_EMB_NADDR16:
7585 case BFD_RELOC_PPC_EMB_NADDR16_LO:
7586 case BFD_RELOC_PPC_EMB_NADDR16_HI:
7587 case BFD_RELOC_PPC_EMB_NADDR16_HA:
7588 case BFD_RELOC_PPC_EMB_SDAI16:
7589 case BFD_RELOC_PPC_EMB_SDA2REL:
7590 case BFD_RELOC_PPC_EMB_SDA2I16:
7591 case BFD_RELOC_PPC_EMB_SDA21:
7592 case BFD_RELOC_PPC_VLE_SDA21_LO:
7593 case BFD_RELOC_PPC_EMB_MRKREF:
7594 case BFD_RELOC_PPC_EMB_RELSEC16:
7595 case BFD_RELOC_PPC_EMB_RELST_LO:
7596 case BFD_RELOC_PPC_EMB_RELST_HI:
7597 case BFD_RELOC_PPC_EMB_RELST_HA:
7598 case BFD_RELOC_PPC_EMB_BIT_FLD:
7599 case BFD_RELOC_PPC_EMB_RELSDA:
7600 case BFD_RELOC_PPC64_TOC:
7601 case BFD_RELOC_PPC_TOC16:
7602 case BFD_RELOC_PPC_TOC16_LO:
7603 case BFD_RELOC_PPC_TOC16_HI:
7604 case BFD_RELOC_PPC64_TOC16_LO:
7605 case BFD_RELOC_PPC64_TOC16_HI:
7606 case BFD_RELOC_PPC64_TOC16_HA:
7607 case BFD_RELOC_PPC64_DTPREL16_HIGH:
7608 case BFD_RELOC_PPC64_DTPREL16_HIGHA:
7609 case BFD_RELOC_PPC64_DTPREL16_HIGHER:
7610 case BFD_RELOC_PPC64_DTPREL16_HIGHERA:
7611 case BFD_RELOC_PPC64_DTPREL16_HIGHEST:
7612 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA:
7613 case BFD_RELOC_PPC64_TPREL16_HIGH:
7614 case BFD_RELOC_PPC64_TPREL16_HIGHA:
7615 case BFD_RELOC_PPC64_TPREL16_HIGHER:
7616 case BFD_RELOC_PPC64_TPREL16_HIGHERA:
7617 case BFD_RELOC_PPC64_TPREL16_HIGHEST:
7618 case BFD_RELOC_PPC64_TPREL16_HIGHESTA:
7619 case BFD_RELOC_PPC64_TLS_PCREL:
7620 fixP->fx_done = 0;
7621 break;
7622 #endif
7623
7624 #ifdef OBJ_XCOFF
7625 case BFD_RELOC_PPC_TLSGD:
7626 case BFD_RELOC_PPC_TLSLD:
7627 case BFD_RELOC_PPC_TLSLE:
7628 case BFD_RELOC_PPC_TLSIE:
7629 case BFD_RELOC_PPC_TLSM:
7630 case BFD_RELOC_PPC64_TLSGD:
7631 case BFD_RELOC_PPC64_TLSLD:
7632 case BFD_RELOC_PPC64_TLSLE:
7633 case BFD_RELOC_PPC64_TLSIE:
7634 case BFD_RELOC_PPC64_TLSM:
7635 gas_assert (fixP->fx_addsy != NULL);
7636 S_SET_THREAD_LOCAL (fixP->fx_addsy);
7637 break;
7638
7639 /* Officially, R_TLSML relocations must be from a TOC entry
7640 targeting itself. In practice, this TOC entry is always
7641 named (or .rename) "_$TLSML".
7642 Thus, as it doesn't seem possible to retrieve the symbol
7643 being relocated here, we simply check that the symbol
7644 targeted by R_TLSML is indeed a TOC entry named "_$TLSML".
7645 FIXME: Find a way to correctly check R_TLSML relocations
7646 as described above. */
7647 case BFD_RELOC_PPC_TLSML:
7648 case BFD_RELOC_PPC64_TLSML:
7649 gas_assert (fixP->fx_addsy != NULL);
7650 if ((symbol_get_tc (fixP->fx_addsy)->symbol_class != XMC_TC
7651 || symbol_get_tc (fixP->fx_addsy)->symbol_class != XMC_TE)
7652 && strcmp (symbol_get_tc (fixP->fx_addsy)->real_name, "_$TLSML") != 0)
7653 as_bad_where (fixP->fx_file, fixP->fx_line,
7654 _("R_TLSML relocation doesn't target a "
7655 "TOC entry named \"_$TLSML\": %s"), S_GET_NAME(fixP->fx_addsy));
7656 fieldval = 0;
7657 break;
7658
7659 case BFD_RELOC_NONE:
7660 #endif
7661 case BFD_RELOC_CTOR:
7662 case BFD_RELOC_32:
7663 case BFD_RELOC_32_PCREL:
7664 case BFD_RELOC_RVA:
7665 case BFD_RELOC_64:
7666 case BFD_RELOC_64_PCREL:
7667 case BFD_RELOC_16:
7668 case BFD_RELOC_16_PCREL:
7669 case BFD_RELOC_8:
7670 break;
7671
7672 default:
7673 fprintf (stderr,
7674 _("Gas failure, reloc value %d\n"), fixP->fx_r_type);
7675 fflush (stderr);
7676 abort ();
7677 }
7678
7679 if (fixP->fx_size && APPLY_RELOC)
7680 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
7681 fieldval, fixP->fx_size);
7682 if (warn_476
7683 && (seg->flags & SEC_CODE) != 0
7684 && fixP->fx_size == 4
7685 && fixP->fx_done
7686 && !fixP->fx_tcbit
7687 && (fixP->fx_r_type == BFD_RELOC_32
7688 || fixP->fx_r_type == BFD_RELOC_CTOR
7689 || fixP->fx_r_type == BFD_RELOC_32_PCREL))
7690 as_warn_where (fixP->fx_file, fixP->fx_line,
7691 _("data in executable section"));
7692 }
7693
7694 #ifdef OBJ_ELF
7695 ppc_elf_validate_fix (fixP, seg);
7696 fixP->fx_addnumber = value;
7697
7698 /* PowerPC uses RELA relocs, ie. the reloc addend is stored separately
7699 from the section contents. If we are going to be emitting a reloc
7700 then the section contents are immaterial, so don't warn if they
7701 happen to overflow. Leave such warnings to ld. */
7702 if (!fixP->fx_done)
7703 {
7704 fixP->fx_no_overflow = 1;
7705
7706 /* Arrange to emit .TOC. as a normal symbol if used in anything
7707 but .TOC.@tocbase. */
7708 if (ppc_obj64
7709 && fixP->fx_r_type != BFD_RELOC_PPC64_TOC
7710 && fixP->fx_addsy != NULL
7711 && strcmp (S_GET_NAME (fixP->fx_addsy), ".TOC.") == 0)
7712 symbol_get_bfdsym (fixP->fx_addsy)->flags |= BSF_KEEP;
7713 }
7714 #else
7715 if (fixP->fx_r_type == BFD_RELOC_PPC_TOC16
7716 || fixP->fx_r_type == BFD_RELOC_PPC_TOC16_HI
7717 || fixP->fx_r_type == BFD_RELOC_PPC_TOC16_LO)
7718 {
7719 /* We want to use the offset within the toc, not the actual VMA
7720 of the symbol. */
7721 fixP->fx_addnumber = (- bfd_section_vma (S_GET_SEGMENT (fixP->fx_addsy))
7722 - S_GET_VALUE (ppc_toc_csect));
7723
7724 /* The high bits must be adjusted for the low bits being signed. */
7725 if (fixP->fx_r_type == BFD_RELOC_PPC_TOC16_HI) {
7726 fixP->fx_addnumber += 0x8000;
7727 }
7728
7729 /* Set *valP to avoid errors. */
7730 *valP = value;
7731 }
7732 else if (fixP->fx_r_type == BFD_RELOC_PPC_TLSM
7733 || fixP->fx_r_type == BFD_RELOC_PPC64_TLSM
7734 || fixP->fx_r_type == BFD_RELOC_PPC_TLSML
7735 || fixP->fx_r_type == BFD_RELOC_PPC64_TLSML)
7736 /* AIX ld expects the section contents for these relocations
7737 to be zero. Arrange for that to occur when
7738 bfd_install_relocation is called. */
7739 fixP->fx_addnumber = (- bfd_section_vma (S_GET_SEGMENT (fixP->fx_addsy))
7740 - S_GET_VALUE (fixP->fx_addsy)
7741 - fieldval);
7742 else
7743 fixP->fx_addnumber = 0;
7744 #endif
7745 }
7746
7747 /* Generate a reloc for a fixup. */
7748
7749 arelent **
tc_gen_reloc(asection * seg ATTRIBUTE_UNUSED,fixS * fixp)7750 tc_gen_reloc (asection *seg ATTRIBUTE_UNUSED, fixS *fixp)
7751 {
7752 static arelent *relocs[3];
7753 arelent *reloc;
7754
7755 relocs[0] = reloc = XNEW (arelent);
7756 relocs[1] = NULL;
7757
7758 reloc->sym_ptr_ptr = XNEW (asymbol *);
7759 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
7760 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
7761 /* BFD_RELOC_PPC64_TLS_PCREL generates R_PPC64_TLS with an odd r_offset. */
7762 if (fixp->fx_r_type == BFD_RELOC_PPC64_TLS_PCREL)
7763 reloc->address++;
7764 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
7765 if (reloc->howto == (reloc_howto_type *) NULL)
7766 {
7767 as_bad_where (fixp->fx_file, fixp->fx_line,
7768 _("reloc %d not supported by object file format"),
7769 (int) fixp->fx_r_type);
7770 relocs[0] = NULL;
7771 }
7772 reloc->addend = fixp->fx_addnumber;
7773
7774 if (fixp->fx_subsy != NULL)
7775 {
7776 relocs[1] = reloc = XNEW (arelent);
7777 relocs[2] = NULL;
7778
7779 reloc->sym_ptr_ptr = XNEW (asymbol *);
7780 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy);
7781 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
7782
7783 reloc->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_PPC_NEG);
7784 reloc->addend = fixp->fx_addnumber;
7785
7786 if (reloc->howto == (reloc_howto_type *) NULL)
7787 {
7788 as_bad_subtract (fixp);
7789 free (relocs[1]->sym_ptr_ptr);
7790 free (relocs[1]);
7791 free (relocs[0]->sym_ptr_ptr);
7792 free (relocs[0]);
7793 relocs[0] = NULL;
7794 }
7795 }
7796
7797
7798 return relocs;
7799 }
7800
7801 void
ppc_cfi_frame_initial_instructions(void)7802 ppc_cfi_frame_initial_instructions (void)
7803 {
7804 cfi_add_CFA_def_cfa (1, 0);
7805 }
7806
7807 int
tc_ppc_regname_to_dw2regnum(char * regname)7808 tc_ppc_regname_to_dw2regnum (char *regname)
7809 {
7810 unsigned int regnum = -1;
7811 unsigned int i;
7812 const char *p;
7813 char *q;
7814 static struct { const char *name; int dw2regnum; } regnames[] =
7815 {
7816 { "sp", 1 }, { "r.sp", 1 }, { "rtoc", 2 }, { "r.toc", 2 },
7817 { "mq", 64 }, { "lr", 65 }, { "ctr", 66 }, { "ap", 67 },
7818 { "cr", 70 }, { "xer", 76 }, { "vrsave", 109 }, { "vscr", 110 },
7819 { "spe_acc", 111 }, { "spefscr", 112 }
7820 };
7821
7822 for (i = 0; i < ARRAY_SIZE (regnames); ++i)
7823 if (strcmp (regnames[i].name, regname) == 0)
7824 return regnames[i].dw2regnum;
7825
7826 if (regname[0] == 'r' || regname[0] == 'f' || regname[0] == 'v')
7827 {
7828 p = regname + 1 + (regname[1] == '.');
7829 regnum = strtoul (p, &q, 10);
7830 if (p == q || *q || regnum >= 32)
7831 return -1;
7832 if (regname[0] == 'f')
7833 regnum += 32;
7834 else if (regname[0] == 'v')
7835 regnum += 77;
7836 }
7837 else if (regname[0] == 'c' && regname[1] == 'r')
7838 {
7839 p = regname + 2 + (regname[2] == '.');
7840 if (p[0] < '0' || p[0] > '7' || p[1])
7841 return -1;
7842 regnum = p[0] - '0' + 68;
7843 }
7844 return regnum;
7845 }
7846