| 1 | /* tc-i386.h -- Header file for tc-i386.c |
| 2 | Copyright (C) 1989-2017 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GAS, the GNU Assembler. |
| 5 | |
| 6 | GAS is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GAS is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GAS; see the file COPYING. If not, write to the Free |
| 18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
| 19 | 02110-1301, USA. */ |
| 20 | |
| 21 | #ifndef TC_I386 |
| 22 | #define TC_I386 1 |
| 23 | |
| 24 | #include "opcodes/i386-opc.h" |
| 25 | |
| 26 | struct fix; |
| 27 | |
| 28 | #define TARGET_BYTES_BIG_ENDIAN 0 |
| 29 | |
| 30 | #define TARGET_ARCH (i386_arch ()) |
| 31 | #define TARGET_MACH (i386_mach ()) |
| 32 | extern enum bfd_architecture i386_arch (void); |
| 33 | extern unsigned long i386_mach (void); |
| 34 | |
| 35 | #ifdef TE_FreeBSD |
| 36 | #define AOUT_TARGET_FORMAT "a.out-i386-freebsd" |
| 37 | #endif |
| 38 | #ifdef TE_NetBSD |
| 39 | #define AOUT_TARGET_FORMAT "a.out-i386-netbsd" |
| 40 | #endif |
| 41 | #ifdef TE_386BSD |
| 42 | #define AOUT_TARGET_FORMAT "a.out-i386-bsd" |
| 43 | #endif |
| 44 | #ifdef TE_LINUX |
| 45 | #define AOUT_TARGET_FORMAT "a.out-i386-linux" |
| 46 | #endif |
| 47 | #ifdef TE_Mach |
| 48 | #define AOUT_TARGET_FORMAT "a.out-mach3" |
| 49 | #endif |
| 50 | #ifdef TE_DYNIX |
| 51 | #define AOUT_TARGET_FORMAT "a.out-i386-dynix" |
| 52 | #endif |
| 53 | #ifndef AOUT_TARGET_FORMAT |
| 54 | #define AOUT_TARGET_FORMAT "a.out-i386" |
| 55 | #endif |
| 56 | |
| 57 | #ifdef TE_FreeBSD |
| 58 | #define ELF_TARGET_FORMAT "elf32-i386-freebsd" |
| 59 | #define ELF_TARGET_FORMAT64 "elf64-x86-64-freebsd" |
| 60 | #elif defined (TE_VXWORKS) |
| 61 | #define ELF_TARGET_FORMAT "elf32-i386-vxworks" |
| 62 | #elif defined (TE_NACL) |
| 63 | #define ELF_TARGET_FORMAT "elf32-i386-nacl" |
| 64 | #define ELF_TARGET_FORMAT32 "elf32-x86-64-nacl" |
| 65 | #define ELF_TARGET_FORMAT64 "elf64-x86-64-nacl" |
| 66 | #endif |
| 67 | |
| 68 | #ifdef TE_SOLARIS |
| 69 | #define ELF_TARGET_FORMAT "elf32-i386-sol2" |
| 70 | #define ELF_TARGET_FORMAT64 "elf64-x86-64-sol2" |
| 71 | #endif |
| 72 | |
| 73 | #ifndef ELF_TARGET_FORMAT |
| 74 | #define ELF_TARGET_FORMAT "elf32-i386" |
| 75 | #endif |
| 76 | |
| 77 | #ifndef ELF_TARGET_FORMAT64 |
| 78 | #define ELF_TARGET_FORMAT64 "elf64-x86-64" |
| 79 | #endif |
| 80 | |
| 81 | #ifndef ELF_TARGET_FORMAT32 |
| 82 | #define ELF_TARGET_FORMAT32 "elf32-x86-64" |
| 83 | #endif |
| 84 | |
| 85 | #ifndef ELF_TARGET_L1OM_FORMAT |
| 86 | #define ELF_TARGET_L1OM_FORMAT "elf64-l1om" |
| 87 | #endif |
| 88 | |
| 89 | #ifndef ELF_TARGET_K1OM_FORMAT |
| 90 | #define ELF_TARGET_K1OM_FORMAT "elf64-k1om" |
| 91 | #endif |
| 92 | |
| 93 | #ifndef ELF_TARGET_IAMCU_FORMAT |
| 94 | #define ELF_TARGET_IAMCU_FORMAT "elf32-iamcu" |
| 95 | #endif |
| 96 | |
| 97 | #if ((defined (OBJ_MAYBE_COFF) && defined (OBJ_MAYBE_AOUT)) \ |
| 98 | || defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) \ |
| 99 | || defined (TE_PE) || defined (TE_PEP) || defined (OBJ_MACH_O)) |
| 100 | extern const char *i386_target_format (void); |
| 101 | #define TARGET_FORMAT i386_target_format () |
| 102 | #else |
| 103 | #ifdef TE_GO32 |
| 104 | #define TARGET_FORMAT "coff-go32" |
| 105 | #endif |
| 106 | #ifdef OBJ_AOUT |
| 107 | #define TARGET_FORMAT AOUT_TARGET_FORMAT |
| 108 | #endif |
| 109 | #endif |
| 110 | |
| 111 | #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0 |
| 112 | |
| 113 | /* '$' may be used as immediate prefix. */ |
| 114 | #undef LOCAL_LABELS_DOLLAR |
| 115 | #define LOCAL_LABELS_DOLLAR 0 |
| 116 | #undef LOCAL_LABELS_FB |
| 117 | #define LOCAL_LABELS_FB 1 |
| 118 | |
| 119 | extern const char extra_symbol_chars[]; |
| 120 | #define tc_symbol_chars extra_symbol_chars |
| 121 | |
| 122 | extern const char *i386_comment_chars; |
| 123 | #define tc_comment_chars i386_comment_chars |
| 124 | |
| 125 | /* The name of the global offset table generated by the compiler. Allow |
| 126 | this to be overridden if need be. */ |
| 127 | #ifndef GLOBAL_OFFSET_TABLE_NAME |
| 128 | #define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_" |
| 129 | #endif |
| 130 | |
| 131 | #if (defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) && !defined (LEX_AT) |
| 132 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) x86_cons (EXP, NBYTES) |
| 133 | #endif |
| 134 | extern bfd_reloc_code_real_type x86_cons (expressionS *, int); |
| 135 | |
| 136 | #define TC_CONS_FIX_NEW(FRAG, OFF, LEN, EXP, RELOC) \ |
| 137 | x86_cons_fix_new(FRAG, OFF, LEN, EXP, RELOC) |
| 138 | extern void x86_cons_fix_new |
| 139 | (fragS *, unsigned int, unsigned int, expressionS *, bfd_reloc_code_real_type); |
| 140 | |
| 141 | #define TC_ADDRESS_BYTES x86_address_bytes |
| 142 | extern int x86_address_bytes (void); |
| 143 | |
| 144 | #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ |
| 145 | |
| 146 | #define NO_RELOC BFD_RELOC_NONE |
| 147 | |
| 148 | void i386_validate_fix (struct fix *); |
| 149 | #define TC_VALIDATE_FIX(FIX,SEGTYPE,SKIP) i386_validate_fix(FIX) |
| 150 | |
| 151 | #define tc_fix_adjustable(X) tc_i386_fix_adjustable(X) |
| 152 | extern int tc_i386_fix_adjustable (struct fix *); |
| 153 | |
| 154 | /* Values passed to md_apply_fix don't include the symbol value. */ |
| 155 | #define MD_APPLY_SYM_VALUE(FIX) 0 |
| 156 | |
| 157 | /* ELF wants external syms kept, as does PE COFF. */ |
| 158 | #if defined (TE_PE) && defined (STRICT_PE_FORMAT) |
| 159 | #define EXTERN_FORCE_RELOC \ |
| 160 | (OUTPUT_FLAVOR == bfd_target_elf_flavour \ |
| 161 | || OUTPUT_FLAVOR == bfd_target_coff_flavour) |
| 162 | #else |
| 163 | #define EXTERN_FORCE_RELOC \ |
| 164 | (OUTPUT_FLAVOR == bfd_target_elf_flavour) |
| 165 | #endif |
| 166 | |
| 167 | /* This expression evaluates to true if the relocation is for a local |
| 168 | object for which we still want to do the relocation at runtime. |
| 169 | False if we are willing to perform this relocation while building |
| 170 | the .o file. GOTOFF and GOT32 do not need to be checked here because |
| 171 | they are not pcrel. .*/ |
| 172 | |
| 173 | #define TC_FORCE_RELOCATION_LOCAL(FIX) \ |
| 174 | (!(FIX)->fx_pcrel \ |
| 175 | || (FIX)->fx_r_type == BFD_RELOC_386_PLT32 \ |
| 176 | || (FIX)->fx_r_type == BFD_RELOC_386_GOTPC \ |
| 177 | || (FIX)->fx_r_type == BFD_RELOC_X86_64_GOTPCRELX \ |
| 178 | || (FIX)->fx_r_type == BFD_RELOC_X86_64_REX_GOTPCRELX \ |
| 179 | || TC_FORCE_RELOCATION (FIX)) |
| 180 | |
| 181 | extern int i386_parse_name (char *, expressionS *, char *); |
| 182 | #define md_parse_name(s, e, m, c) i386_parse_name (s, e, c) |
| 183 | |
| 184 | extern operatorT i386_operator (const char *name, unsigned int operands, char *); |
| 185 | #define md_operator i386_operator |
| 186 | |
| 187 | extern int i386_need_index_operator (void); |
| 188 | #define md_need_index_operator i386_need_index_operator |
| 189 | |
| 190 | #define md_register_arithmetic 0 |
| 191 | |
| 192 | extern const struct relax_type md_relax_table[]; |
| 193 | #define TC_GENERIC_RELAX_TABLE md_relax_table |
| 194 | |
| 195 | extern int optimize_align_code; |
| 196 | |
| 197 | #define md_do_align(n, fill, len, max, around) \ |
| 198 | if ((n) \ |
| 199 | && !need_pass_2 \ |
| 200 | && optimize_align_code \ |
| 201 | && (!(fill) \ |
| 202 | || ((char)*(fill) == (char)0x90 && (len) == 1)) \ |
| 203 | && subseg_text_p (now_seg)) \ |
| 204 | { \ |
| 205 | frag_align_code ((n), (max)); \ |
| 206 | goto around; \ |
| 207 | } |
| 208 | |
| 209 | #define MAX_MEM_FOR_RS_ALIGN_CODE 31 |
| 210 | |
| 211 | extern void i386_align_code (fragS *, int); |
| 212 | |
| 213 | #define HANDLE_ALIGN(fragP) \ |
| 214 | if (fragP->fr_type == rs_align_code) \ |
| 215 | i386_align_code (fragP, (fragP->fr_next->fr_address \ |
| 216 | - fragP->fr_address \ |
| 217 | - fragP->fr_fix)); |
| 218 | |
| 219 | void i386_print_statistics (FILE *); |
| 220 | #define tc_print_statistics i386_print_statistics |
| 221 | |
| 222 | extern unsigned int i386_frag_max_var (fragS *); |
| 223 | #define md_frag_max_var i386_frag_max_var |
| 224 | |
| 225 | #define md_number_to_chars number_to_chars_littleendian |
| 226 | |
| 227 | enum processor_type |
| 228 | { |
| 229 | PROCESSOR_UNKNOWN, |
| 230 | PROCESSOR_I386, |
| 231 | PROCESSOR_I486, |
| 232 | PROCESSOR_PENTIUM, |
| 233 | PROCESSOR_PENTIUMPRO, |
| 234 | PROCESSOR_PENTIUM4, |
| 235 | PROCESSOR_NOCONA, |
| 236 | PROCESSOR_CORE, |
| 237 | PROCESSOR_CORE2, |
| 238 | PROCESSOR_COREI7, |
| 239 | PROCESSOR_L1OM, |
| 240 | PROCESSOR_K1OM, |
| 241 | PROCESSOR_IAMCU, |
| 242 | PROCESSOR_K6, |
| 243 | PROCESSOR_ATHLON, |
| 244 | PROCESSOR_K8, |
| 245 | PROCESSOR_GENERIC32, |
| 246 | PROCESSOR_GENERIC64, |
| 247 | PROCESSOR_AMDFAM10, |
| 248 | PROCESSOR_BD, |
| 249 | PROCESSOR_ZNVER, |
| 250 | PROCESSOR_BT |
| 251 | }; |
| 252 | |
| 253 | extern enum processor_type cpu_arch_tune; |
| 254 | extern enum processor_type cpu_arch_isa; |
| 255 | extern i386_cpu_flags cpu_arch_isa_flags; |
| 256 | |
| 257 | struct i386_tc_frag_data |
| 258 | { |
| 259 | enum processor_type isa; |
| 260 | i386_cpu_flags isa_flags; |
| 261 | enum processor_type tune; |
| 262 | }; |
| 263 | |
| 264 | /* We need to emit the right NOP pattern in .align frags. This is |
| 265 | done after the text-to-bits assembly pass, so we need to mark it with |
| 266 | the isa/tune settings at the time the .align was assembled. */ |
| 267 | #define TC_FRAG_TYPE struct i386_tc_frag_data |
| 268 | |
| 269 | #define TC_FRAG_INIT(FRAGP) \ |
| 270 | do \ |
| 271 | { \ |
| 272 | (FRAGP)->tc_frag_data.isa = cpu_arch_isa; \ |
| 273 | (FRAGP)->tc_frag_data.isa_flags = cpu_arch_isa_flags; \ |
| 274 | (FRAGP)->tc_frag_data.tune = cpu_arch_tune; \ |
| 275 | } \ |
| 276 | while (0) |
| 277 | |
| 278 | #ifdef SCO_ELF |
| 279 | #define tc_init_after_args() sco_id () |
| 280 | extern void sco_id (void); |
| 281 | #endif |
| 282 | |
| 283 | #define WORKING_DOT_WORD 1 |
| 284 | |
| 285 | /* We want .cfi_* pseudo-ops for generating unwind info. */ |
| 286 | #define TARGET_USE_CFIPOP 1 |
| 287 | |
| 288 | extern unsigned int x86_dwarf2_return_column; |
| 289 | #define DWARF2_DEFAULT_RETURN_COLUMN x86_dwarf2_return_column |
| 290 | |
| 291 | extern int x86_cie_data_alignment; |
| 292 | #define DWARF2_CIE_DATA_ALIGNMENT x86_cie_data_alignment |
| 293 | |
| 294 | extern int x86_dwarf2_addr_size (void); |
| 295 | #define DWARF2_ADDR_SIZE(bfd) x86_dwarf2_addr_size () |
| 296 | |
| 297 | #define tc_parse_to_dw2regnum tc_x86_parse_to_dw2regnum |
| 298 | extern void tc_x86_parse_to_dw2regnum (expressionS *); |
| 299 | |
| 300 | #define tc_cfi_frame_initial_instructions tc_x86_frame_initial_instructions |
| 301 | extern void tc_x86_frame_initial_instructions (void); |
| 302 | |
| 303 | #define md_elf_section_type(str,len) i386_elf_section_type (str, len) |
| 304 | extern int i386_elf_section_type (const char *, size_t); |
| 305 | |
| 306 | #ifdef TE_SOLARIS |
| 307 | #define md_fix_up_eh_frame(sec) i386_solaris_fix_up_eh_frame (sec) |
| 308 | extern void i386_solaris_fix_up_eh_frame (segT); |
| 309 | #endif |
| 310 | |
| 311 | /* Support for SHF_X86_64_LARGE */ |
| 312 | extern bfd_vma x86_64_section_word (char *, size_t); |
| 313 | extern bfd_vma x86_64_section_letter (int, const char **); |
| 314 | #define md_elf_section_letter(LETTER, PTR_MSG) x86_64_section_letter (LETTER, PTR_MSG) |
| 315 | #define md_elf_section_word(STR, LEN) x86_64_section_word (STR, LEN) |
| 316 | |
| 317 | #ifdef TE_PE |
| 318 | |
| 319 | #define O_secrel O_md1 |
| 320 | |
| 321 | #define TC_DWARF2_EMIT_OFFSET tc_pe_dwarf2_emit_offset |
| 322 | void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int); |
| 323 | |
| 324 | #endif /* TE_PE */ |
| 325 | |
| 326 | /* X_add_symbol:X_op_symbol (Intel mode only) */ |
| 327 | #define O_full_ptr O_md2 |
| 328 | |
| 329 | #ifdef OBJ_MACH_O |
| 330 | |
| 331 | #define TC_FORCE_RELOCATION(FIX) (obj_mach_o_force_reloc (FIX)) |
| 332 | |
| 333 | #define TC_FORCE_RELOCATION_SUB_SAME(FIX,SEG) \ |
| 334 | (obj_mach_o_force_reloc_sub_same (FIX, SEG)) |
| 335 | |
| 336 | #define TC_FORCE_RELOCATION_SUB_LOCAL(FIX,SEG) \ |
| 337 | (obj_mach_o_force_reloc_sub_local (FIX, SEG)) |
| 338 | |
| 339 | #define TC_VALIDATE_FIX_SUB(FIX, SEG) 1 |
| 340 | |
| 341 | #endif /* OBJ_MACH_O */ |
| 342 | |
| 343 | #endif /* TC_I386 */ |