1 /* BFD back-end for raw ARM a.out binaries.
2    Copyright 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005,
3    2007 Free Software Foundation, Inc.
4    Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org)
5 
6    This file is part of BFD, the Binary File Descriptor library.
7 
8    This program is free software; you can redistribute it and/or modify
9    it under the terms of the GNU General Public License as published by
10    the Free Software Foundation; either version 2 of the License, or
11    (at your option) any later version.
12 
13    This program is distributed in the hope that it will be useful,
14    but WITHOUT ANY WARRANTY; without even the implied warranty of
15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16    GNU General Public License for more details.
17 
18    You should have received a copy of the GNU General Public License
19    along with this program; if not, write to the Free Software
20    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
21 
22 #include "sysdep.h"
23 #include "bfd.h"
24 
25 /* Avoid multiple definitions from aoutx if supporting standard a.out
26    as well as our own.  */
27 /* Do not "beautify" the CONCAT* macro args.  Traditional C will not
28    remove whitespace added here, and thus will fail to concatenate
29    the tokens.  */
30 #define NAME(x,y) CONCAT3 (aoutarm,_32_,y)
31 
32 #define N_TXTADDR(x)						\
33   ((N_MAGIC (x) == NMAGIC)					\
34    ? (bfd_vma) 0x8000						\
35    : ((N_MAGIC (x) != ZMAGIC)					\
36       ? (bfd_vma) 0						\
37       : ((N_SHARED_LIB (x))					\
38 	 ? ((x).a_entry & ~(bfd_vma) (TARGET_PAGE_SIZE - 1))	\
39 	 : (bfd_vma) TEXT_START_ADDR)))
40 
41 #define TEXT_START_ADDR 0x8000
42 #define TARGET_PAGE_SIZE 0x8000
43 #define SEGMENT_SIZE TARGET_PAGE_SIZE
44 #define DEFAULT_ARCH bfd_arch_arm
45 
46 #define MY(OP) CONCAT2 (aoutarm_,OP)
47 #define N_BADMAG(x) ((((x).a_info & ~007200) != ZMAGIC) && \
48                      (((x).a_info & ~006000) != OMAGIC) && \
49                      ((x).a_info != NMAGIC))
50 #define N_MAGIC(x) ((x).a_info & ~07200)
51 
52 #define MY_bfd_reloc_type_lookup aoutarm_bfd_reloc_type_lookup
53 #define MY_bfd_reloc_name_lookup aoutarm_bfd_reloc_name_lookup
54 
55 #include "libaout.h"
56 #include "aout/aout64.h"
57 
58 
59 static bfd_reloc_status_type
60   MY (fix_pcrel_26) (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
61 static bfd_reloc_status_type
62   MY (fix_pcrel_26_done) (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
63 
64 reloc_howto_type MY (howto_table)[] =
65 {
66   /* Type rs size bsz pcrel bitpos ovrf sf name part_inpl
67      readmask setmask pcdone.  */
68   HOWTO (0, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, "8", TRUE,
69 	 0x000000ff, 0x000000ff, FALSE),
70   HOWTO (1, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, 0, "16", TRUE,
71 	 0x0000ffff, 0x0000ffff, FALSE),
72   HOWTO (2, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "32", TRUE,
73 	 0xffffffff, 0xffffffff, FALSE),
74   HOWTO (3, 2, 2, 26, TRUE, 0, complain_overflow_signed, MY (fix_pcrel_26),
75 	 "ARM26", TRUE, 0x00ffffff, 0x00ffffff, TRUE),
76   HOWTO (4, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0, "DISP8", TRUE,
77 	 0x000000ff, 0x000000ff, TRUE),
78   HOWTO (5, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0, "DISP16", TRUE,
79 	 0x0000ffff, 0x0000ffff, TRUE),
80   HOWTO (6, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0, "DISP32", TRUE,
81 	 0xffffffff, 0xffffffff, TRUE),
82   HOWTO (7, 2, 2, 26, FALSE, 0, complain_overflow_signed,
83 	 MY (fix_pcrel_26_done), "ARM26D", TRUE, 0x0, 0x0,
84 	 FALSE),
85   EMPTY_HOWTO (-1),
86   HOWTO (9, 0, -1, 16, FALSE, 0, complain_overflow_bitfield, 0, "NEG16", TRUE,
87 	 0x0000ffff, 0x0000ffff, FALSE),
88   HOWTO (10, 0, -2, 32, FALSE, 0, complain_overflow_bitfield, 0, "NEG32", TRUE,
89 	 0xffffffff, 0xffffffff, FALSE)
90 };
91 
92 #define RELOC_ARM_BITS_NEG_BIG      ((unsigned int) 0x08)
93 #define RELOC_ARM_BITS_NEG_LITTLE   ((unsigned int) 0x10)
94 
95 static reloc_howto_type *
MY(reloc_howto)96 MY (reloc_howto) (bfd *abfd,
97 		  struct reloc_std_external *rel,
98 		  int *r_index,
99 		  int *r_extern,
100 		  int *r_pcrel)
101 {
102   unsigned int r_length;
103   unsigned int r_pcrel_done;
104   unsigned int r_neg;
105   int index;
106 
107   *r_pcrel = 0;
108   if (bfd_header_big_endian (abfd))
109     {
110       *r_index     =  ((rel->r_index[0] << 16)
111 		       | (rel->r_index[1] << 8)
112 		       | rel->r_index[2]);
113       *r_extern    = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
114       r_pcrel_done = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
115       r_neg 	   = (0 != (rel->r_type[0] & RELOC_ARM_BITS_NEG_BIG));
116       r_length     = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
117 		      >> RELOC_STD_BITS_LENGTH_SH_BIG);
118     }
119   else
120     {
121       *r_index     = ((rel->r_index[2] << 16)
122 		      | (rel->r_index[1] << 8)
123 		      | rel->r_index[0]);
124       *r_extern    = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
125       r_pcrel_done = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
126       r_neg 	   = (0 != (rel->r_type[0] & RELOC_ARM_BITS_NEG_LITTLE));
127       r_length     = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
128 		      >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
129     }
130   index = r_length + 4 * r_pcrel_done + 8 * r_neg;
131   if (index == 3)
132     *r_pcrel = 1;
133 
134   return MY (howto_table) + index;
135 }
136 
137 #define MY_reloc_howto(BFD, REL, IN, EX, PC) \
138 	MY (reloc_howto) (BFD, REL, &IN, &EX, &PC)
139 
140 static void
MY(put_reloc)141 MY (put_reloc) (bfd *abfd,
142 		int r_extern,
143 		int r_index,
144 		bfd_vma value,
145 		reloc_howto_type *howto,
146 		struct reloc_std_external *reloc)
147 {
148   unsigned int r_length;
149   int r_pcrel;
150   int r_neg;
151 
152   PUT_WORD (abfd, value, reloc->r_address);
153   /* Size as a power of two.  */
154   r_length = howto->size;
155 
156   /* Special case for branch relocations.  */
157   if (howto->type == 3 || howto->type == 7)
158     r_length = 3;
159 
160   r_pcrel  = howto->type & 4; 	/* PC Relative done?  */
161   r_neg = howto->type & 8;	/* Negative relocation.  */
162 
163   if (bfd_header_big_endian (abfd))
164     {
165       reloc->r_index[0] = r_index >> 16;
166       reloc->r_index[1] = r_index >> 8;
167       reloc->r_index[2] = r_index;
168       reloc->r_type[0] =
169 	((r_extern ?     RELOC_STD_BITS_EXTERN_BIG : 0)
170 	 | (r_pcrel ?    RELOC_STD_BITS_PCREL_BIG : 0)
171 	 | (r_neg ?	 RELOC_ARM_BITS_NEG_BIG : 0)
172 	 | (r_length <<  RELOC_STD_BITS_LENGTH_SH_BIG));
173     }
174   else
175     {
176       reloc->r_index[2] = r_index >> 16;
177       reloc->r_index[1] = r_index >> 8;
178       reloc->r_index[0] = r_index;
179       reloc->r_type[0] =
180 	((r_extern ?     RELOC_STD_BITS_EXTERN_LITTLE : 0)
181 	 | (r_pcrel ?    RELOC_STD_BITS_PCREL_LITTLE : 0)
182 	 | (r_neg ?	 RELOC_ARM_BITS_NEG_LITTLE : 0)
183 	 | (r_length <<  RELOC_STD_BITS_LENGTH_SH_LITTLE));
184     }
185 }
186 
187 #define MY_put_reloc(BFD, EXT, IDX, VAL, HOWTO, RELOC) \
188   MY (put_reloc) (BFD, EXT, IDX, VAL, HOWTO, RELOC)
189 
190 static void
MY(relocatable_reloc)191 MY (relocatable_reloc) (reloc_howto_type *howto,
192 			bfd *abfd,
193 			struct reloc_std_external *reloc,
194 			bfd_vma *amount,
195 			bfd_vma r_addr)
196 {
197   if (howto->type == 3)
198     {
199       if (reloc->r_type[0]
200 	  & (bfd_header_big_endian (abfd)
201 	     ? RELOC_STD_BITS_EXTERN_BIG : RELOC_STD_BITS_EXTERN_LITTLE))
202 	/* The reloc is still external, so don't modify anything.  */
203 	*amount = 0;
204       else
205 	{
206 	  *amount -= r_addr;
207 	  /* Change the r_pcrel value -- on the ARM, this bit is set once the
208 	     relocation is done.  */
209 	  if (bfd_header_big_endian (abfd))
210 	    reloc->r_type[0] |= RELOC_STD_BITS_PCREL_BIG;
211 	  else
212 	    reloc->r_type[0] |= RELOC_STD_BITS_PCREL_LITTLE;
213 	}
214     }
215   else if (howto->type == 7)
216     *amount = 0;
217 }
218 
219 #define MY_relocatable_reloc(HOW, BFD, REL, AMOUNT, ADDR) \
220   MY (relocatable_reloc) (HOW, BFD, REL, &(AMOUNT), ADDR)
221 
222 static bfd_reloc_status_type
MY(fix_pcrel_26_done)223 MY (fix_pcrel_26_done) (bfd *abfd ATTRIBUTE_UNUSED,
224 			arelent *reloc_entry ATTRIBUTE_UNUSED,
225 			asymbol *symbol ATTRIBUTE_UNUSED,
226 			void * data ATTRIBUTE_UNUSED,
227 			asection *input_section ATTRIBUTE_UNUSED,
228 			bfd *output_bfd ATTRIBUTE_UNUSED,
229 			char **error_message ATTRIBUTE_UNUSED)
230 {
231   /* This is dead simple at present.  */
232   return bfd_reloc_ok;
233 }
234 
235 static bfd_reloc_status_type
MY(fix_pcrel_26)236 MY (fix_pcrel_26) (bfd *abfd,
237 		   arelent *reloc_entry,
238 		   asymbol *symbol,
239 		   void * data,
240 		   asection *input_section,
241 		   bfd *output_bfd,
242 		   char **error_message ATTRIBUTE_UNUSED)
243 {
244   bfd_vma relocation;
245   bfd_size_type addr = reloc_entry->address;
246   bfd_vma target = bfd_get_32 (abfd, (bfd_byte *) data + addr);
247   bfd_reloc_status_type flag = bfd_reloc_ok;
248 
249   /* If this is an undefined symbol, return error.  */
250   if (symbol->section == &bfd_und_section
251       && (symbol->flags & BSF_WEAK) == 0)
252     return output_bfd ? bfd_reloc_ok : bfd_reloc_undefined;
253 
254   /* If the sections are different, and we are doing a partial relocation,
255      just ignore it for now.  */
256   if (symbol->section->name != input_section->name
257       && output_bfd != NULL)
258     return bfd_reloc_ok;
259 
260   relocation = (target & 0x00ffffff) << 2;
261   relocation = (relocation ^ 0x02000000) - 0x02000000; /* Sign extend.  */
262   relocation += symbol->value;
263   relocation += symbol->section->output_section->vma;
264   relocation += symbol->section->output_offset;
265   relocation += reloc_entry->addend;
266   relocation -= input_section->output_section->vma;
267   relocation -= input_section->output_offset;
268   relocation -= addr;
269   if (relocation & 3)
270     return bfd_reloc_overflow;
271 
272   /* Check for overflow.  */
273   if (relocation & 0x02000000)
274     {
275       if ((relocation & ~ (bfd_vma) 0x03ffffff) != ~ (bfd_vma) 0x03ffffff)
276 	flag = bfd_reloc_overflow;
277     }
278   else if (relocation & ~ (bfd_vma) 0x03ffffff)
279     flag = bfd_reloc_overflow;
280 
281   target &= ~ (bfd_vma) 0x00ffffff;
282   target |= (relocation >> 2) & 0x00ffffff;
283   bfd_put_32 (abfd, target, (bfd_byte *) data + addr);
284 
285   /* Now the ARM magic... Change the reloc type so that it is marked as done.
286      Strictly this is only necessary if we are doing a partial relocation.  */
287   reloc_entry->howto = &MY (howto_table)[7];
288 
289   return flag;
290 }
291 
292 static reloc_howto_type *
MY(bfd_reloc_type_lookup)293 MY (bfd_reloc_type_lookup) (bfd *abfd,
294 			    bfd_reloc_code_real_type code)
295 {
296 #define ASTD(i,j)       case i: return & MY (howto_table)[j]
297 
298   if (code == BFD_RELOC_CTOR)
299     switch (bfd_get_arch_info (abfd)->bits_per_address)
300       {
301       case 32:
302         code = BFD_RELOC_32;
303         break;
304       default:
305 	return NULL;
306       }
307 
308   switch (code)
309     {
310       ASTD (BFD_RELOC_16, 1);
311       ASTD (BFD_RELOC_32, 2);
312       ASTD (BFD_RELOC_ARM_PCREL_BRANCH, 3);
313       ASTD (BFD_RELOC_8_PCREL, 4);
314       ASTD (BFD_RELOC_16_PCREL, 5);
315       ASTD (BFD_RELOC_32_PCREL, 6);
316     default:
317       return NULL;
318     }
319 }
320 
321 static reloc_howto_type *
MY(bfd_reloc_name_lookup)322 MY (bfd_reloc_name_lookup) (bfd *abfd ATTRIBUTE_UNUSED,
323 			    const char *r_name)
324 {
325   unsigned int i;
326 
327   for (i = 0;
328        i < sizeof (MY (howto_table)) / sizeof (MY (howto_table)[0]);
329        i++)
330     if (MY (howto_table)[i].name != NULL
331 	&& strcasecmp (MY (howto_table)[i].name, r_name) == 0)
332       return &MY (howto_table)[i];
333 
334   return NULL;
335 }
336 
337 #define MY_swap_std_reloc_in     MY (swap_std_reloc_in)
338 #define MY_swap_std_reloc_out    MY (swap_std_reloc_out)
339 #define MY_get_section_contents  _bfd_generic_get_section_contents
340 
341 void MY_swap_std_reloc_in (bfd *, struct reloc_std_external *, arelent *, asymbol **, bfd_size_type);
342 void MY_swap_std_reloc_out (bfd *, arelent *, struct reloc_std_external *);
343 
344 #include "aoutx.h"
345 
346 void
MY_swap_std_reloc_in(bfd * abfd,struct reloc_std_external * bytes,arelent * cache_ptr,asymbol ** symbols,bfd_size_type symcount ATTRIBUTE_UNUSED)347 MY_swap_std_reloc_in (bfd *abfd,
348 		      struct reloc_std_external *bytes,
349 		      arelent *cache_ptr,
350 		      asymbol **symbols,
351 		      bfd_size_type symcount ATTRIBUTE_UNUSED)
352 {
353   int r_index;
354   int r_extern;
355   int r_pcrel;
356   struct aoutdata *su = &(abfd->tdata.aout_data->a);
357 
358   cache_ptr->address = H_GET_32 (abfd, bytes->r_address);
359 
360   cache_ptr->howto = MY_reloc_howto (abfd, bytes, r_index, r_extern, r_pcrel);
361 
362   MOVE_ADDRESS (0);
363 }
364 
365 void
MY_swap_std_reloc_out(bfd * abfd,arelent * g,struct reloc_std_external * natptr)366 MY_swap_std_reloc_out (bfd *abfd,
367 		       arelent *g,
368 		       struct reloc_std_external *natptr)
369 {
370   int r_index;
371   asymbol *sym = *(g->sym_ptr_ptr);
372   int r_extern;
373   int r_length;
374   int r_pcrel;
375   int r_neg = 0;	/* Negative relocs use the BASEREL bit.  */
376   asection *output_section = sym->section->output_section;
377 
378   PUT_WORD (abfd, g->address, natptr->r_address);
379 
380   r_length = g->howto->size ;   /* Size as a power of two.  */
381   if (r_length < 0)
382     {
383       r_length = -r_length;
384       r_neg = 1;
385     }
386 
387   r_pcrel  = (int) g->howto->pc_relative; /* Relative to PC?  */
388 
389   /* For RISC iX, in pc-relative relocs the r_pcrel bit means that the
390      relocation has been done already (Only for the 26-bit one I think).  */
391   if (g->howto->type == 3)
392     {
393       r_length = 3;
394       r_pcrel = 0;
395     }
396   else if (g->howto->type == 7)
397     {
398       r_length = 3;
399       r_pcrel = 1;
400     }
401 
402   /* Name was clobbered by aout_write_syms to be symbol index.  */
403 
404   /* If this relocation is relative to a symbol then set the
405      r_index to the symbols index, and the r_extern bit.
406 
407      Absolute symbols can come in in two ways, either as an offset
408      from the abs section, or as a symbol which has an abs value.
409      check for that here.  */
410 
411   if (bfd_is_com_section (output_section)
412       || output_section == &bfd_abs_section
413       || output_section == &bfd_und_section)
414     {
415       if (bfd_abs_section.symbol == sym)
416 	{
417 	  /* Whoops, looked like an abs symbol, but is really an offset
418 	     from the abs section.  */
419 	  r_index = 0;
420 	  r_extern = 0;
421 	}
422       else
423 	{
424 	  /* Fill in symbol.  */
425 	  r_extern = 1;
426 	  r_index = (*(g->sym_ptr_ptr))->KEEPIT;
427 	}
428     }
429   else
430     {
431       /* Just an ordinary section.  */
432       r_extern = 0;
433       r_index  = output_section->target_index;
434     }
435 
436   /* Now the fun stuff.  */
437   if (bfd_header_big_endian (abfd))
438     {
439       natptr->r_index[0] = r_index >> 16;
440       natptr->r_index[1] = r_index >> 8;
441       natptr->r_index[2] = r_index;
442       natptr->r_type[0] =
443 	(  (r_extern ?   RELOC_STD_BITS_EXTERN_BIG: 0)
444 	 | (r_pcrel  ?   RELOC_STD_BITS_PCREL_BIG: 0)
445 	 | (r_neg    ?   RELOC_ARM_BITS_NEG_BIG: 0)
446 	 | (r_length <<  RELOC_STD_BITS_LENGTH_SH_BIG));
447     }
448   else
449     {
450       natptr->r_index[2] = r_index >> 16;
451       natptr->r_index[1] = r_index >> 8;
452       natptr->r_index[0] = r_index;
453       natptr->r_type[0] =
454 	(  (r_extern ?   RELOC_STD_BITS_EXTERN_LITTLE: 0)
455 	 | (r_pcrel  ?   RELOC_STD_BITS_PCREL_LITTLE: 0)
456 	 | (r_neg    ?   RELOC_ARM_BITS_NEG_LITTLE: 0)
457 	 | (r_length <<  RELOC_STD_BITS_LENGTH_SH_LITTLE));
458     }
459 }
460 
461 #define MY_BFD_TARGET
462 
463 #include "aout-target.h"
464 
465 extern const bfd_target aout_arm_big_vec;
466 
467 const bfd_target aout_arm_little_vec =
468 {
469   "a.out-arm-little",           /* Name.  */
470   bfd_target_aout_flavour,
471   BFD_ENDIAN_LITTLE,            /* Target byte order (little).  */
472   BFD_ENDIAN_LITTLE,            /* Target headers byte order (little).  */
473   (HAS_RELOC | EXEC_P |         /* Object flags.  */
474    HAS_LINENO | HAS_DEBUG |
475    HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
476   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA),
477   MY_symbol_leading_char,
478   AR_PAD_CHAR,                  /* AR_pad_char.  */
479   15,                           /* AR_max_namelen.  */
480   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
481   bfd_getl32, bfd_getl_signed_32, bfd_putl32,
482   bfd_getl16, bfd_getl_signed_16, bfd_putl16,	/* Data.  */
483   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
484   bfd_getl32, bfd_getl_signed_32, bfd_putl32,
485   bfd_getl16, bfd_getl_signed_16, bfd_putl16,	/* Headers.  */
486   {_bfd_dummy_target, MY_object_p,		/* bfd_check_format.  */
487    bfd_generic_archive_p, MY_core_file_p},
488   {bfd_false, MY_mkobject,			/* bfd_set_format.  */
489    _bfd_generic_mkarchive, bfd_false},
490   {bfd_false, MY_write_object_contents,		/* bfd_write_contents.  */
491    _bfd_write_archive_contents, bfd_false},
492 
493   BFD_JUMP_TABLE_GENERIC (MY),
494   BFD_JUMP_TABLE_COPY (MY),
495   BFD_JUMP_TABLE_CORE (MY),
496   BFD_JUMP_TABLE_ARCHIVE (MY),
497   BFD_JUMP_TABLE_SYMBOLS (MY),
498   BFD_JUMP_TABLE_RELOCS (MY),
499   BFD_JUMP_TABLE_WRITE (MY),
500   BFD_JUMP_TABLE_LINK (MY),
501   BFD_JUMP_TABLE_DYNAMIC (MY),
502 
503   & aout_arm_big_vec,
504 
505   (void *) MY_backend_data,
506 };
507 
508 const bfd_target aout_arm_big_vec =
509 {
510   "a.out-arm-big",              /* Name.  */
511   bfd_target_aout_flavour,
512   BFD_ENDIAN_BIG,               /* Target byte order (big).  */
513   BFD_ENDIAN_BIG,               /* Target headers byte order (big).  */
514   (HAS_RELOC | EXEC_P |         /* Object flags.  */
515    HAS_LINENO | HAS_DEBUG |
516    HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
517   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA),
518   MY_symbol_leading_char,
519   AR_PAD_CHAR,                  		/* AR_pad_char.  */
520   15,                           		/* AR_max_namelen.  */
521   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
522   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
523   bfd_getb16, bfd_getb_signed_16, bfd_putb16,	/* Data.  */
524   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
525   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
526   bfd_getb16, bfd_getb_signed_16, bfd_putb16,	/* Headers.  */
527   {_bfd_dummy_target, MY_object_p,		/* bfd_check_format.  */
528    bfd_generic_archive_p, MY_core_file_p},
529   {bfd_false, MY_mkobject,			/* bfd_set_format.  */
530    _bfd_generic_mkarchive, bfd_false},
531   {bfd_false, MY_write_object_contents,		/* bfd_write_contents.  */
532    _bfd_write_archive_contents, bfd_false},
533 
534   BFD_JUMP_TABLE_GENERIC (MY),
535   BFD_JUMP_TABLE_COPY (MY),
536   BFD_JUMP_TABLE_CORE (MY),
537   BFD_JUMP_TABLE_ARCHIVE (MY),
538   BFD_JUMP_TABLE_SYMBOLS (MY),
539   BFD_JUMP_TABLE_RELOCS (MY),
540   BFD_JUMP_TABLE_WRITE (MY),
541   BFD_JUMP_TABLE_LINK (MY),
542   BFD_JUMP_TABLE_DYNAMIC (MY),
543 
544   & aout_arm_little_vec,
545 
546   (void *) MY_backend_data,
547 };
548