1 /* tc-i386.h -- Header file for tc-i386.c 2 Copyright 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 3 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 4 Free Software Foundation, Inc. 5 6 This file is part of GAS, the GNU Assembler. 7 8 GAS 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 3, or (at your option) 11 any later version. 12 13 GAS 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 GAS; see the file COPYING. If not, write to the Free 20 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 21 02110-1301, USA. */ 22 23 #ifndef TC_I386 24 #define TC_I386 1 25 26 #include "opcodes/i386-opc.h" 27 28 struct fix; 29 30 #define TARGET_BYTES_BIG_ENDIAN 0 31 32 #define TARGET_ARCH (i386_arch ()) 33 #define TARGET_MACH (i386_mach ()) 34 extern enum bfd_architecture i386_arch (void); 35 extern unsigned long i386_mach (void); 36 37 #ifdef TE_FreeBSD 38 #define AOUT_TARGET_FORMAT "a.out-i386-freebsd" 39 #endif 40 #ifdef TE_NetBSD 41 #define AOUT_TARGET_FORMAT "a.out-i386-netbsd" 42 #endif 43 #ifdef TE_386BSD 44 #define AOUT_TARGET_FORMAT "a.out-i386-bsd" 45 #endif 46 #ifdef TE_LINUX 47 #define AOUT_TARGET_FORMAT "a.out-i386-linux" 48 #endif 49 #ifdef TE_Mach 50 #define AOUT_TARGET_FORMAT "a.out-mach3" 51 #endif 52 #ifdef TE_DYNIX 53 #define AOUT_TARGET_FORMAT "a.out-i386-dynix" 54 #endif 55 #ifndef AOUT_TARGET_FORMAT 56 #define AOUT_TARGET_FORMAT "a.out-i386" 57 #endif 58 59 #ifdef TE_FreeBSD 60 #define ELF_TARGET_FORMAT "elf32-i386-freebsd" 61 #define ELF_TARGET_FORMAT64 "elf64-x86-64-freebsd" 62 #elif defined (TE_VXWORKS) 63 #define ELF_TARGET_FORMAT "elf32-i386-vxworks" 64 #endif 65 66 #ifdef TE_SOLARIS 67 #define ELF_TARGET_FORMAT "elf32-i386-sol2" 68 #define ELF_TARGET_FORMAT64 "elf64-x86-64-sol2" 69 #endif 70 71 #ifndef ELF_TARGET_FORMAT 72 #define ELF_TARGET_FORMAT "elf32-i386" 73 #endif 74 75 #ifndef ELF_TARGET_FORMAT64 76 #define ELF_TARGET_FORMAT64 "elf64-x86-64" 77 #endif 78 79 #ifndef ELF_TARGET_L1OM_FORMAT 80 #define ELF_TARGET_L1OM_FORMAT "elf64-l1om" 81 #endif 82 83 #if ((defined (OBJ_MAYBE_COFF) && defined (OBJ_MAYBE_AOUT)) \ 84 || defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) \ 85 || defined (TE_PE) || defined (TE_PEP) || defined (OBJ_MACH_O)) 86 extern const char *i386_target_format (void); 87 #define TARGET_FORMAT i386_target_format () 88 #else 89 #ifdef TE_GO32 90 #define TARGET_FORMAT "coff-go32" 91 #endif 92 #ifdef OBJ_AOUT 93 #define TARGET_FORMAT AOUT_TARGET_FORMAT 94 #endif 95 #endif 96 97 #if (defined (OBJ_MAYBE_ELF) || defined (OBJ_ELF)) 98 #define md_end i386_elf_emit_arch_note 99 extern void i386_elf_emit_arch_note (void); 100 #endif 101 102 #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0 103 104 /* '$' may be used as immediate prefix. */ 105 #undef LOCAL_LABELS_DOLLAR 106 #define LOCAL_LABELS_DOLLAR 0 107 #undef LOCAL_LABELS_FB 108 #define LOCAL_LABELS_FB 1 109 110 extern const char extra_symbol_chars[]; 111 #define tc_symbol_chars extra_symbol_chars 112 113 extern const char *i386_comment_chars; 114 #define tc_comment_chars i386_comment_chars 115 116 /* The name of the global offset table generated by the compiler. Allow 117 this to be overridden if need be. */ 118 #ifndef GLOBAL_OFFSET_TABLE_NAME 119 #define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_" 120 #endif 121 122 #if (defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) && !defined (LEX_AT) 123 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) x86_cons (EXP, NBYTES) 124 extern void x86_cons (expressionS *, int); 125 #endif 126 127 #define TC_CONS_FIX_NEW(FRAG,OFF,LEN,EXP) x86_cons_fix_new(FRAG, OFF, LEN, EXP) 128 extern void x86_cons_fix_new 129 (fragS *, unsigned int, unsigned int, expressionS *); 130 131 #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ 132 133 #define NO_RELOC BFD_RELOC_NONE 134 135 void i386_validate_fix (struct fix *); 136 #define TC_VALIDATE_FIX(FIX,SEGTYPE,SKIP) i386_validate_fix(FIX) 137 138 #define tc_fix_adjustable(X) tc_i386_fix_adjustable(X) 139 extern int tc_i386_fix_adjustable (struct fix *); 140 141 /* Values passed to md_apply_fix don't include the symbol value. */ 142 #define MD_APPLY_SYM_VALUE(FIX) 0 143 144 /* ELF wants external syms kept, as does PE COFF. */ 145 #if defined (TE_PE) && defined (STRICT_PE_FORMAT) 146 #define EXTERN_FORCE_RELOC \ 147 (OUTPUT_FLAVOR == bfd_target_elf_flavour \ 148 || OUTPUT_FLAVOR == bfd_target_coff_flavour) 149 #else 150 #define EXTERN_FORCE_RELOC \ 151 (OUTPUT_FLAVOR == bfd_target_elf_flavour) 152 #endif 153 154 /* This expression evaluates to true if the relocation is for a local 155 object for which we still want to do the relocation at runtime. 156 False if we are willing to perform this relocation while building 157 the .o file. GOTOFF and GOT32 do not need to be checked here because 158 they are not pcrel. .*/ 159 160 #define TC_FORCE_RELOCATION_LOCAL(FIX) \ 161 (!(FIX)->fx_pcrel \ 162 || (FIX)->fx_r_type == BFD_RELOC_386_PLT32 \ 163 || (FIX)->fx_r_type == BFD_RELOC_386_GOTPC \ 164 || (FIX)->fx_r_type == BFD_RELOC_X86_64_GOTPCREL \ 165 || TC_FORCE_RELOCATION (FIX)) 166 167 extern int i386_parse_name (char *, expressionS *, char *); 168 #define md_parse_name(s, e, m, c) i386_parse_name (s, e, c) 169 170 extern operatorT i386_operator (const char *name, unsigned int operands, char *); 171 #define md_operator i386_operator 172 173 extern int i386_need_index_operator (void); 174 #define md_need_index_operator i386_need_index_operator 175 176 #define md_register_arithmetic 0 177 178 extern const struct relax_type md_relax_table[]; 179 #define TC_GENERIC_RELAX_TABLE md_relax_table 180 181 extern int optimize_align_code; 182 183 #define md_do_align(n, fill, len, max, around) \ 184 if ((n) \ 185 && !need_pass_2 \ 186 && optimize_align_code \ 187 && (!(fill) \ 188 || ((char)*(fill) == (char)0x90 && (len) == 1)) \ 189 && subseg_text_p (now_seg)) \ 190 { \ 191 frag_align_code ((n), (max)); \ 192 goto around; \ 193 } 194 195 #define MAX_MEM_FOR_RS_ALIGN_CODE 31 196 197 extern void i386_align_code (fragS *, int); 198 199 #define HANDLE_ALIGN(fragP) \ 200 if (fragP->fr_type == rs_align_code) \ 201 i386_align_code (fragP, (fragP->fr_next->fr_address \ 202 - fragP->fr_address \ 203 - fragP->fr_fix)); 204 205 void i386_print_statistics (FILE *); 206 #define tc_print_statistics i386_print_statistics 207 208 #define md_number_to_chars number_to_chars_littleendian 209 210 enum processor_type 211 { 212 PROCESSOR_UNKNOWN, 213 PROCESSOR_I386, 214 PROCESSOR_I486, 215 PROCESSOR_PENTIUM, 216 PROCESSOR_PENTIUMPRO, 217 PROCESSOR_PENTIUM4, 218 PROCESSOR_NOCONA, 219 PROCESSOR_CORE, 220 PROCESSOR_CORE2, 221 PROCESSOR_COREI7, 222 PROCESSOR_L1OM, 223 PROCESSOR_K6, 224 PROCESSOR_ATHLON, 225 PROCESSOR_K8, 226 PROCESSOR_GENERIC32, 227 PROCESSOR_GENERIC64, 228 PROCESSOR_AMDFAM10, 229 PROCESSOR_BDVER1 230 }; 231 232 extern enum processor_type cpu_arch_tune; 233 extern enum processor_type cpu_arch_isa; 234 extern i386_cpu_flags cpu_arch_isa_flags; 235 236 struct i386_tc_frag_data 237 { 238 enum processor_type isa; 239 i386_cpu_flags isa_flags; 240 enum processor_type tune; 241 }; 242 243 /* We need to emit the right NOP pattern in .align frags. This is 244 done after the text-to-bits assembly pass, so we need to mark it with 245 the isa/tune settings at the time the .align was assembled. */ 246 #define TC_FRAG_TYPE struct i386_tc_frag_data 247 248 #define TC_FRAG_INIT(FRAGP) \ 249 do \ 250 { \ 251 (FRAGP)->tc_frag_data.isa = cpu_arch_isa; \ 252 (FRAGP)->tc_frag_data.isa_flags = cpu_arch_isa_flags; \ 253 (FRAGP)->tc_frag_data.tune = cpu_arch_tune; \ 254 } \ 255 while (0) 256 257 #ifdef SCO_ELF 258 #define tc_init_after_args() sco_id () 259 extern void sco_id (void); 260 #endif 261 262 #define WORKING_DOT_WORD 1 263 264 /* We want .cfi_* pseudo-ops for generating unwind info. */ 265 #define TARGET_USE_CFIPOP 1 266 267 extern unsigned int x86_dwarf2_return_column; 268 #define DWARF2_DEFAULT_RETURN_COLUMN x86_dwarf2_return_column 269 270 extern int x86_cie_data_alignment; 271 #define DWARF2_CIE_DATA_ALIGNMENT x86_cie_data_alignment 272 273 #define tc_parse_to_dw2regnum tc_x86_parse_to_dw2regnum 274 extern void tc_x86_parse_to_dw2regnum (expressionS *); 275 276 #define tc_cfi_frame_initial_instructions tc_x86_frame_initial_instructions 277 extern void tc_x86_frame_initial_instructions (void); 278 279 #define md_elf_section_type(str,len) i386_elf_section_type (str, len) 280 extern int i386_elf_section_type (const char *, size_t); 281 282 #ifdef TE_SOLARIS 283 #define md_fix_up_eh_frame(sec) i386_solaris_fix_up_eh_frame (sec) 284 extern void i386_solaris_fix_up_eh_frame (segT); 285 #endif 286 287 /* Support for SHF_X86_64_LARGE */ 288 extern bfd_vma x86_64_section_word (char *, size_t); 289 extern bfd_vma x86_64_section_letter (int, char **); 290 #define md_elf_section_letter(LETTER, PTR_MSG) x86_64_section_letter (LETTER, PTR_MSG) 291 #define md_elf_section_word(STR, LEN) x86_64_section_word (STR, LEN) 292 293 #ifdef TE_PE 294 295 #define O_secrel O_md1 296 297 #define TC_DWARF2_EMIT_OFFSET tc_pe_dwarf2_emit_offset 298 void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int); 299 300 #endif /* TE_PE */ 301 302 /* X_add_symbol:X_op_symbol (Intel mode only) */ 303 #define O_full_ptr O_md2 304 305 #endif /* TC_I386 */ 306