1 /* tc-i386.h -- Header file for tc-i386.c 2 Copyright (C) 1989-2020 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 #elif defined TE_CLOUDABI 67 #define ELF_TARGET_FORMAT64 "elf64-x86-64-cloudabi" 68 #endif 69 70 #ifdef TE_SOLARIS 71 #define ELF_TARGET_FORMAT "elf32-i386-sol2" 72 #define ELF_TARGET_FORMAT64 "elf64-x86-64-sol2" 73 #endif 74 75 #ifndef ELF_TARGET_FORMAT 76 #define ELF_TARGET_FORMAT "elf32-i386" 77 #endif 78 79 #ifndef ELF_TARGET_FORMAT64 80 #define ELF_TARGET_FORMAT64 "elf64-x86-64" 81 #endif 82 83 #ifndef ELF_TARGET_FORMAT32 84 #define ELF_TARGET_FORMAT32 "elf32-x86-64" 85 #endif 86 87 #ifndef ELF_TARGET_L1OM_FORMAT 88 #define ELF_TARGET_L1OM_FORMAT "elf64-l1om" 89 #endif 90 91 #ifndef ELF_TARGET_K1OM_FORMAT 92 #define ELF_TARGET_K1OM_FORMAT "elf64-k1om" 93 #endif 94 95 #ifndef ELF_TARGET_IAMCU_FORMAT 96 #define ELF_TARGET_IAMCU_FORMAT "elf32-iamcu" 97 #endif 98 99 #if ((defined (OBJ_MAYBE_COFF) && defined (OBJ_MAYBE_AOUT)) \ 100 || defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) \ 101 || defined (TE_PE) || defined (TE_PEP) || defined (OBJ_MACH_O)) 102 extern const char *i386_target_format (void); 103 #define TARGET_FORMAT i386_target_format () 104 #else 105 #ifdef TE_GO32 106 #define TARGET_FORMAT "coff-go32" 107 #endif 108 #ifdef OBJ_AOUT 109 #define TARGET_FORMAT AOUT_TARGET_FORMAT 110 #endif 111 #endif 112 113 #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0 114 115 /* '$' may be used as immediate prefix. */ 116 #undef LOCAL_LABELS_DOLLAR 117 #define LOCAL_LABELS_DOLLAR 0 118 #undef LOCAL_LABELS_FB 119 #define LOCAL_LABELS_FB 1 120 121 extern const char extra_symbol_chars[]; 122 #define tc_symbol_chars extra_symbol_chars 123 124 extern const char *i386_comment_chars; 125 #define tc_comment_chars i386_comment_chars 126 127 /* The name of the global offset table generated by the compiler. Allow 128 this to be overridden if need be. */ 129 #ifndef GLOBAL_OFFSET_TABLE_NAME 130 #define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_" 131 #endif 132 133 #if (defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) && !defined (LEX_AT) 134 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) x86_cons (EXP, NBYTES) 135 #endif 136 extern bfd_reloc_code_real_type x86_cons (expressionS *, int); 137 138 #define TC_CONS_FIX_NEW(FRAG, OFF, LEN, EXP, RELOC) \ 139 x86_cons_fix_new(FRAG, OFF, LEN, EXP, RELOC) 140 extern void x86_cons_fix_new 141 (fragS *, unsigned int, unsigned int, expressionS *, bfd_reloc_code_real_type); 142 143 #define TC_ADDRESS_BYTES x86_address_bytes 144 extern int x86_address_bytes (void); 145 146 #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ 147 148 #define NO_RELOC BFD_RELOC_NONE 149 150 void i386_validate_fix (struct fix *); 151 #define TC_VALIDATE_FIX(FIX,SEGTYPE,SKIP) i386_validate_fix(FIX) 152 153 #define tc_fix_adjustable(X) tc_i386_fix_adjustable(X) 154 extern int tc_i386_fix_adjustable (struct fix *); 155 156 /* Values passed to md_apply_fix don't include the symbol value. */ 157 #define MD_APPLY_SYM_VALUE(FIX) 0 158 159 /* ELF wants external syms kept, as does PE COFF. */ 160 #if defined (TE_PE) && defined (STRICT_PE_FORMAT) 161 #define EXTERN_FORCE_RELOC \ 162 (OUTPUT_FLAVOR == bfd_target_elf_flavour \ 163 || OUTPUT_FLAVOR == bfd_target_coff_flavour) 164 #else 165 #define EXTERN_FORCE_RELOC \ 166 (OUTPUT_FLAVOR == bfd_target_elf_flavour) 167 #endif 168 169 /* This expression evaluates to true if the relocation is for a local 170 object for which we still want to do the relocation at runtime. 171 False if we are willing to perform this relocation while building 172 the .o file. GOTOFF and GOT32 do not need to be checked here because 173 they are not pcrel. .*/ 174 175 #define TC_FORCE_RELOCATION_LOCAL(FIX) \ 176 (GENERIC_FORCE_RELOCATION_LOCAL (FIX) \ 177 || (FIX)->fx_r_type == BFD_RELOC_386_PLT32 \ 178 || (FIX)->fx_r_type == BFD_RELOC_386_GOTPC \ 179 || (FIX)->fx_r_type == BFD_RELOC_X86_64_GOTPCREL \ 180 || (FIX)->fx_r_type == BFD_RELOC_X86_64_GOTPCRELX \ 181 || (FIX)->fx_r_type == BFD_RELOC_X86_64_REX_GOTPCRELX) 182 183 extern int i386_parse_name (char *, expressionS *, char *); 184 #define md_parse_name(s, e, m, c) i386_parse_name (s, e, c) 185 186 extern operatorT i386_operator (const char *name, unsigned int operands, char *); 187 #define md_operator i386_operator 188 189 extern int i386_need_index_operator (void); 190 #define md_need_index_operator i386_need_index_operator 191 192 #define md_register_arithmetic 0 193 194 extern const struct relax_type md_relax_table[]; 195 #define TC_GENERIC_RELAX_TABLE md_relax_table 196 197 extern int optimize_align_code; 198 199 #define md_do_align(n, fill, len, max, around) \ 200 if ((n) \ 201 && !need_pass_2 \ 202 && optimize_align_code \ 203 && (!(fill) \ 204 || ((char)*(fill) == (char)0x90 && (len) == 1)) \ 205 && subseg_text_p (now_seg)) \ 206 { \ 207 frag_align_code ((n), (max)); \ 208 goto around; \ 209 } 210 211 #define MAX_MEM_FOR_RS_ALIGN_CODE (alignment ? ((1 << alignment) - 1) : 1) 212 213 extern void i386_cons_align (int); 214 #define md_cons_align(nbytes) i386_cons_align (nbytes) 215 216 void i386_print_statistics (FILE *); 217 #define tc_print_statistics i386_print_statistics 218 219 extern unsigned int i386_frag_max_var (fragS *); 220 #define md_frag_max_var i386_frag_max_var 221 222 extern long i386_generic_table_relax_frag (segT, fragS *, long); 223 #define md_generic_table_relax_frag(segment, fragP, stretch) \ 224 i386_generic_table_relax_frag (segment, fragP, stretch) 225 226 #define md_number_to_chars number_to_chars_littleendian 227 228 enum processor_type 229 { 230 PROCESSOR_UNKNOWN, 231 PROCESSOR_I386, 232 PROCESSOR_I486, 233 PROCESSOR_PENTIUM, 234 PROCESSOR_PENTIUMPRO, 235 PROCESSOR_PENTIUM4, 236 PROCESSOR_NOCONA, 237 PROCESSOR_CORE, 238 PROCESSOR_CORE2, 239 PROCESSOR_COREI7, 240 PROCESSOR_L1OM, 241 PROCESSOR_K1OM, 242 PROCESSOR_IAMCU, 243 PROCESSOR_K6, 244 PROCESSOR_ATHLON, 245 PROCESSOR_K8, 246 PROCESSOR_GENERIC32, 247 PROCESSOR_GENERIC64, 248 PROCESSOR_AMDFAM10, 249 PROCESSOR_BD, 250 PROCESSOR_ZNVER, 251 PROCESSOR_BT 252 }; 253 254 extern enum processor_type cpu_arch_tune; 255 extern enum processor_type cpu_arch_isa; 256 extern i386_cpu_flags cpu_arch_isa_flags; 257 258 struct i386_tc_frag_data 259 { 260 union 261 { 262 fragS *padding_fragP; 263 fragS *branch_fragP; 264 } u; 265 addressT padding_address; 266 enum processor_type isa; 267 i386_cpu_flags isa_flags; 268 enum processor_type tune; 269 unsigned int max_bytes; 270 unsigned char length; 271 unsigned char last_length; 272 unsigned char max_prefix_length; 273 unsigned char prefix_length; 274 unsigned char default_prefix; 275 unsigned char cmp_size; 276 unsigned int classified : 1; 277 unsigned int branch_type : 3; 278 }; 279 280 /* We need to emit the right NOP pattern in .align frags. This is 281 done after the text-to-bits assembly pass, so we need to mark it with 282 the isa/tune settings at the time the .align was assembled. */ 283 #define TC_FRAG_TYPE struct i386_tc_frag_data 284 285 #define TC_FRAG_INIT(FRAGP, MAX_BYTES) \ 286 do \ 287 { \ 288 (FRAGP)->tc_frag_data.u.padding_fragP = NULL; \ 289 (FRAGP)->tc_frag_data.padding_address = 0; \ 290 (FRAGP)->tc_frag_data.isa = cpu_arch_isa; \ 291 (FRAGP)->tc_frag_data.isa_flags = cpu_arch_isa_flags; \ 292 (FRAGP)->tc_frag_data.tune = cpu_arch_tune; \ 293 (FRAGP)->tc_frag_data.max_bytes = (MAX_BYTES); \ 294 (FRAGP)->tc_frag_data.length = 0; \ 295 (FRAGP)->tc_frag_data.last_length = 0; \ 296 (FRAGP)->tc_frag_data.max_prefix_length = 0; \ 297 (FRAGP)->tc_frag_data.prefix_length = 0; \ 298 (FRAGP)->tc_frag_data.default_prefix = 0; \ 299 (FRAGP)->tc_frag_data.cmp_size = 0; \ 300 (FRAGP)->tc_frag_data.classified = 0; \ 301 (FRAGP)->tc_frag_data.branch_type = 0; \ 302 } \ 303 while (0) 304 305 #define WORKING_DOT_WORD 1 306 307 /* How to generate NOPs for .nop direct directive. */ 308 extern void i386_generate_nops (fragS *, char *, offsetT, int); 309 #define md_generate_nops(frag, where, amount, control) \ 310 i386_generate_nops ((frag), (where), (amount), (control)) 311 312 #define HANDLE_ALIGN(fragP) \ 313 if (fragP->fr_type == rs_align_code) \ 314 { \ 315 offsetT __count = (fragP->fr_next->fr_address \ 316 - fragP->fr_address \ 317 - fragP->fr_fix); \ 318 if (__count > 0 \ 319 && (unsigned int) __count <= fragP->tc_frag_data.max_bytes) \ 320 md_generate_nops (fragP, fragP->fr_literal + fragP->fr_fix, \ 321 __count, 0); \ 322 } 323 324 /* We want .cfi_* pseudo-ops for generating unwind info. */ 325 #define TARGET_USE_CFIPOP 1 326 327 extern unsigned int x86_dwarf2_return_column; 328 #define DWARF2_DEFAULT_RETURN_COLUMN x86_dwarf2_return_column 329 330 extern int x86_cie_data_alignment; 331 #define DWARF2_CIE_DATA_ALIGNMENT x86_cie_data_alignment 332 333 extern int x86_dwarf2_addr_size (void); 334 #define DWARF2_ADDR_SIZE(bfd) x86_dwarf2_addr_size () 335 336 #define tc_parse_to_dw2regnum tc_x86_parse_to_dw2regnum 337 extern void tc_x86_parse_to_dw2regnum (expressionS *); 338 339 #define tc_cfi_frame_initial_instructions tc_x86_frame_initial_instructions 340 extern void tc_x86_frame_initial_instructions (void); 341 342 #define md_elf_section_type(str,len) i386_elf_section_type (str, len) 343 extern int i386_elf_section_type (const char *, size_t); 344 345 #ifdef TE_SOLARIS 346 #define md_fix_up_eh_frame(sec) i386_solaris_fix_up_eh_frame (sec) 347 extern void i386_solaris_fix_up_eh_frame (segT); 348 #endif 349 350 /* Support for SHF_X86_64_LARGE */ 351 extern bfd_vma x86_64_section_word (char *, size_t); 352 extern bfd_vma x86_64_section_letter (int, const char **); 353 #define md_elf_section_letter(LETTER, PTR_MSG) x86_64_section_letter (LETTER, PTR_MSG) 354 #define md_elf_section_word(STR, LEN) x86_64_section_word (STR, LEN) 355 356 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) 357 extern void x86_cleanup (void); 358 #define md_cleanup() x86_cleanup () 359 #endif 360 361 #ifdef TE_PE 362 363 #define O_secrel O_md1 364 365 #define TC_DWARF2_EMIT_OFFSET tc_pe_dwarf2_emit_offset 366 void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int); 367 368 #endif /* TE_PE */ 369 370 /* X_add_symbol:X_op_symbol (Intel mode only) */ 371 #define O_full_ptr O_md2 372 373 #ifdef OBJ_MACH_O 374 375 #define TC_FORCE_RELOCATION(FIX) (obj_mach_o_force_reloc (FIX)) 376 377 #define TC_FORCE_RELOCATION_SUB_SAME(FIX,SEG) \ 378 (obj_mach_o_force_reloc_sub_same (FIX, SEG)) 379 380 #define TC_FORCE_RELOCATION_SUB_LOCAL(FIX,SEG) \ 381 (obj_mach_o_force_reloc_sub_local (FIX, SEG)) 382 383 #define TC_VALIDATE_FIX_SUB(FIX, SEG) 1 384 385 #endif /* OBJ_MACH_O */ 386 387 #endif /* TC_I386 */ 388