1 /* tc-mips.h -- header file for tc-mips.c. 2 Copyright 1993, 1994, 1995, 1996, 1997, 2000, 2001, 2002, 2003, 2004 3 Free Software Foundation, Inc. 4 Contributed by the OSF and Ralph Campbell. 5 Written by Keith Knowles and Ralph Campbell, working independently. 6 Modified for ECOFF support by Ian Lance Taylor of Cygnus Support. 7 8 This file is part of GAS. 9 10 GAS is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 2, or (at your option) 13 any later version. 14 15 GAS is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with GAS; see the file COPYING. If not, write to the Free 22 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 23 02110-1301, USA. */ 24 25 #ifndef TC_MIPS 26 #define TC_MIPS 27 28 struct frag; 29 struct expressionS; 30 31 /* Default to big endian. */ 32 #ifndef TARGET_BYTES_BIG_ENDIAN 33 #define TARGET_BYTES_BIG_ENDIAN 1 34 #endif 35 36 #define TARGET_ARCH bfd_arch_mips 37 38 #define WORKING_DOT_WORD 1 39 #define OLD_FLOAT_READS 40 #define REPEAT_CONS_EXPRESSIONS 41 #define RELOC_EXPANSION_POSSIBLE 42 #define MAX_RELOC_EXPANSION 3 43 #define LOCAL_LABELS_FB 1 44 45 /* Maximum symbol offset that can be encoded in a BFD_RELOC_GPREL16 46 relocation. */ 47 #define MAX_GPREL_OFFSET (0x7FF0) 48 49 #define md_relax_frag(segment, fragp, stretch) \ 50 mips_relax_frag(segment, fragp, stretch) 51 extern int mips_relax_frag (asection *, struct frag *, long); 52 53 #define md_undefined_symbol(name) (0) 54 #define md_operand(x) 55 56 extern void mips_handle_align (struct frag *); 57 #define HANDLE_ALIGN(fragp) mips_handle_align (fragp) 58 59 #define MAX_MEM_FOR_RS_ALIGN_CODE (1 + 2) 60 61 /* Tell assembler that we have an itbl_mips.h header file to include. */ 62 #define HAVE_ITBL_CPU 63 64 /* The endianness of the target format may change based on command 65 line arguments. */ 66 #define TARGET_FORMAT mips_target_format() 67 extern const char *mips_target_format (void); 68 69 /* MIPS PIC level. */ 70 71 enum mips_pic_level 72 { 73 /* Do not generate PIC code. */ 74 NO_PIC, 75 76 /* Generate PIC code as in the SVR4 MIPS ABI. */ 77 SVR4_PIC, 78 }; 79 80 extern enum mips_pic_level mips_pic; 81 82 extern int tc_get_register (int frame); 83 84 #define md_after_parse_args() mips_after_parse_args() 85 extern void mips_after_parse_args (void); 86 87 #define tc_init_after_args() mips_init_after_args() 88 extern void mips_init_after_args (void); 89 90 #define md_parse_long_option(arg) mips_parse_long_option (arg) 91 extern int mips_parse_long_option (const char *); 92 93 #define tc_frob_label(sym) mips_define_label (sym) 94 extern void mips_define_label (symbolS *); 95 96 #define tc_frob_file_before_adjust() mips_frob_file_before_adjust () 97 extern void mips_frob_file_before_adjust (void); 98 99 #define tc_frob_file_before_fix() mips_frob_file () 100 extern void mips_frob_file (void); 101 102 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) 103 #define tc_frob_file_after_relocs mips_frob_file_after_relocs 104 extern void mips_frob_file_after_relocs (void); 105 #endif 106 107 #define tc_fix_adjustable(fixp) mips_fix_adjustable (fixp) 108 extern int mips_fix_adjustable (struct fix *); 109 110 /* Values passed to md_apply_fix don't include symbol values. */ 111 #define MD_APPLY_SYM_VALUE(FIX) 0 112 113 /* Global syms must not be resolved, to support ELF shared libraries. */ 114 #define EXTERN_FORCE_RELOC \ 115 (OUTPUT_FLAVOR == bfd_target_elf_flavour) 116 117 /* When generating NEWABI code, we may need to have to keep combined 118 relocations which don't have symbols. */ 119 #define TC_FORCE_RELOCATION(FIX) mips_force_relocation (FIX) 120 extern int mips_force_relocation (struct fix *); 121 122 #define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \ 123 (! SEG_NORMAL (SEG) || mips_force_relocation (FIX)) 124 125 /* We use this to turn branches to global symbols into branches to 126 local symbols, so that they can be simplified. */ 127 #define TC_VALIDATE_FIX(fixp, this_segment, skip_label) \ 128 do \ 129 if (! mips_validate_fix ((fixp), (this_segment))) \ 130 goto skip_label; \ 131 while (0) 132 extern int mips_validate_fix (struct fix *, asection *); 133 134 /* Register mask variables. These are set by the MIPS assembly code 135 and used by ECOFF and possibly other object file formats. */ 136 extern unsigned long mips_gprmask; 137 extern unsigned long mips_cprmask[4]; 138 139 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) 140 141 #define elf_tc_final_processing mips_elf_final_processing 142 extern void mips_elf_final_processing (void); 143 144 #endif 145 146 extern void md_mips_end (void); 147 #define md_end() md_mips_end() 148 149 extern void mips_pop_insert (void); 150 #define md_pop_insert() mips_pop_insert() 151 152 extern void mips_emit_delays (void); 153 #define md_flush_pending_output mips_emit_delays 154 155 extern void mips_enable_auto_align (void); 156 #define md_elf_section_change_hook() mips_enable_auto_align() 157 158 extern enum dwarf2_format mips_dwarf2_format (void); 159 #define DWARF2_FORMAT() mips_dwarf2_format () 160 161 extern int mips_dwarf2_addr_size (void); 162 #define DWARF2_ADDR_SIZE(bfd) mips_dwarf2_addr_size () 163 164 #define TARGET_USE_CFIPOP 1 165 166 #define tc_cfi_frame_initial_instructions mips_cfi_frame_initial_instructions 167 extern void mips_cfi_frame_initial_instructions (void); 168 169 #define DWARF2_DEFAULT_RETURN_COLUMN 31 170 #define DWARF2_CIE_DATA_ALIGNMENT -4 171 172 #endif /* TC_MIPS */ 173