1 /* tc-i386.h -- Header file for tc-i386.c 2 Copyright (C) 1989-2018 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 (GENERIC_FORCE_RELOCATION_LOCAL (FIX) \ 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) 179 180 extern int i386_parse_name (char *, expressionS *, char *); 181 #define md_parse_name(s, e, m, c) i386_parse_name (s, e, c) 182 183 extern operatorT i386_operator (const char *name, unsigned int operands, char *); 184 #define md_operator i386_operator 185 186 extern int i386_need_index_operator (void); 187 #define md_need_index_operator i386_need_index_operator 188 189 #define md_register_arithmetic 0 190 191 extern const struct relax_type md_relax_table[]; 192 #define TC_GENERIC_RELAX_TABLE md_relax_table 193 194 extern int optimize_align_code; 195 196 #define md_do_align(n, fill, len, max, around) \ 197 if ((n) \ 198 && !need_pass_2 \ 199 && optimize_align_code \ 200 && (!(fill) \ 201 || ((char)*(fill) == (char)0x90 && (len) == 1)) \ 202 && subseg_text_p (now_seg)) \ 203 { \ 204 frag_align_code ((n), (max)); \ 205 goto around; \ 206 } 207 208 #define MAX_MEM_FOR_RS_ALIGN_CODE 4095 209 210 void i386_print_statistics (FILE *); 211 #define tc_print_statistics i386_print_statistics 212 213 extern unsigned int i386_frag_max_var (fragS *); 214 #define md_frag_max_var i386_frag_max_var 215 216 #define md_number_to_chars number_to_chars_littleendian 217 218 enum processor_type 219 { 220 PROCESSOR_UNKNOWN, 221 PROCESSOR_I386, 222 PROCESSOR_I486, 223 PROCESSOR_PENTIUM, 224 PROCESSOR_PENTIUMPRO, 225 PROCESSOR_PENTIUM4, 226 PROCESSOR_NOCONA, 227 PROCESSOR_CORE, 228 PROCESSOR_CORE2, 229 PROCESSOR_COREI7, 230 PROCESSOR_L1OM, 231 PROCESSOR_K1OM, 232 PROCESSOR_IAMCU, 233 PROCESSOR_K6, 234 PROCESSOR_ATHLON, 235 PROCESSOR_K8, 236 PROCESSOR_GENERIC32, 237 PROCESSOR_GENERIC64, 238 PROCESSOR_AMDFAM10, 239 PROCESSOR_BD, 240 PROCESSOR_ZNVER, 241 PROCESSOR_BT 242 }; 243 244 extern enum processor_type cpu_arch_tune; 245 extern enum processor_type cpu_arch_isa; 246 extern i386_cpu_flags cpu_arch_isa_flags; 247 248 struct i386_tc_frag_data 249 { 250 enum processor_type isa; 251 i386_cpu_flags isa_flags; 252 enum processor_type tune; 253 }; 254 255 /* We need to emit the right NOP pattern in .align frags. This is 256 done after the text-to-bits assembly pass, so we need to mark it with 257 the isa/tune settings at the time the .align was assembled. */ 258 #define TC_FRAG_TYPE struct i386_tc_frag_data 259 260 #define TC_FRAG_INIT(FRAGP) \ 261 do \ 262 { \ 263 (FRAGP)->tc_frag_data.isa = cpu_arch_isa; \ 264 (FRAGP)->tc_frag_data.isa_flags = cpu_arch_isa_flags; \ 265 (FRAGP)->tc_frag_data.tune = cpu_arch_tune; \ 266 } \ 267 while (0) 268 269 #define WORKING_DOT_WORD 1 270 271 /* How to generate NOPs for .nop direct directive. */ 272 extern void i386_generate_nops (fragS *, char *, offsetT, int); 273 #define md_generate_nops(frag, where, amount, control) \ 274 i386_generate_nops ((frag), (where), (amount), (control)) 275 276 #define HANDLE_ALIGN(fragP) \ 277 if (fragP->fr_type == rs_align_code) \ 278 { \ 279 offsetT __count = (fragP->fr_next->fr_address \ 280 - fragP->fr_address \ 281 - fragP->fr_fix); \ 282 if (__count > 0 && __count <= MAX_MEM_FOR_RS_ALIGN_CODE) \ 283 md_generate_nops (fragP, fragP->fr_literal + fragP->fr_fix, \ 284 __count, 0); \ 285 } 286 287 /* We want .cfi_* pseudo-ops for generating unwind info. */ 288 #define TARGET_USE_CFIPOP 1 289 290 extern unsigned int x86_dwarf2_return_column; 291 #define DWARF2_DEFAULT_RETURN_COLUMN x86_dwarf2_return_column 292 293 extern int x86_cie_data_alignment; 294 #define DWARF2_CIE_DATA_ALIGNMENT x86_cie_data_alignment 295 296 extern int x86_dwarf2_addr_size (void); 297 #define DWARF2_ADDR_SIZE(bfd) x86_dwarf2_addr_size () 298 299 #define tc_parse_to_dw2regnum tc_x86_parse_to_dw2regnum 300 extern void tc_x86_parse_to_dw2regnum (expressionS *); 301 302 #define tc_cfi_frame_initial_instructions tc_x86_frame_initial_instructions 303 extern void tc_x86_frame_initial_instructions (void); 304 305 #define md_elf_section_type(str,len) i386_elf_section_type (str, len) 306 extern int i386_elf_section_type (const char *, size_t); 307 308 #ifdef TE_SOLARIS 309 #define md_fix_up_eh_frame(sec) i386_solaris_fix_up_eh_frame (sec) 310 extern void i386_solaris_fix_up_eh_frame (segT); 311 #endif 312 313 /* Support for SHF_X86_64_LARGE */ 314 extern bfd_vma x86_64_section_word (char *, size_t); 315 extern bfd_vma x86_64_section_letter (int, const char **); 316 #define md_elf_section_letter(LETTER, PTR_MSG) x86_64_section_letter (LETTER, PTR_MSG) 317 #define md_elf_section_word(STR, LEN) x86_64_section_word (STR, LEN) 318 319 #ifdef TE_PE 320 321 #define O_secrel O_md1 322 323 #define TC_DWARF2_EMIT_OFFSET tc_pe_dwarf2_emit_offset 324 void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int); 325 326 #endif /* TE_PE */ 327 328 /* X_add_symbol:X_op_symbol (Intel mode only) */ 329 #define O_full_ptr O_md2 330 331 #ifdef OBJ_MACH_O 332 333 #define TC_FORCE_RELOCATION(FIX) (obj_mach_o_force_reloc (FIX)) 334 335 #define TC_FORCE_RELOCATION_SUB_SAME(FIX,SEG) \ 336 (obj_mach_o_force_reloc_sub_same (FIX, SEG)) 337 338 #define TC_FORCE_RELOCATION_SUB_LOCAL(FIX,SEG) \ 339 (obj_mach_o_force_reloc_sub_local (FIX, SEG)) 340 341 #define TC_VALIDATE_FIX_SUB(FIX, SEG) 1 342 343 #endif /* OBJ_MACH_O */ 344 345 #endif /* TC_I386 */ 346