gas/config/tc-i386.h

   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_FORMAT32
  80 #define ELF_TARGET_FORMAT32     "elf32-x86-64"
  81 #endif
  82
  83 #ifndef ELF_TARGET_L1OM_FORMAT
  84 #define ELF_TARGET_L1OM_FORMAT  "elf64-l1om"
  85 #endif
  86
  87 #if ((defined (OBJ_MAYBE_COFF) && defined (OBJ_MAYBE_AOUT)) \
  88      || defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) \
  89      || defined (TE_PE) || defined (TE_PEP) || defined (OBJ_MACH_O))
  90 extern const char *i386_target_format (void);
  91 #define TARGET_FORMAT i386_target_format ()
  92 #else
  93 #ifdef TE_GO32
  94 #define TARGET_FORMAT           "coff-go32"
  95 #endif
  96 #ifdef OBJ_AOUT
  97 #define TARGET_FORMAT           AOUT_TARGET_FORMAT
  98 #endif
  99 #endif
 100
 101 #if (defined (OBJ_MAYBE_ELF) || defined (OBJ_ELF))
 102 #define md_end i386_elf_emit_arch_note
 103 extern void i386_elf_emit_arch_note (void);
 104 #endif
 105
 106 #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
 107
 108 /* '$' may be used as immediate prefix.  */
 109 #undef LOCAL_LABELS_DOLLAR
 110 #define LOCAL_LABELS_DOLLAR 0
 111 #undef LOCAL_LABELS_FB
 112 #define LOCAL_LABELS_FB 1
 113
 114 extern const char extra_symbol_chars[];
 115 #define tc_symbol_chars extra_symbol_chars
 116
 117 extern const char *i386_comment_chars;
 118 #define tc_comment_chars i386_comment_chars
 119
 120 /* The name of the global offset table generated by the compiler. Allow
 121    this to be overridden if need be.  */
 122 #ifndef GLOBAL_OFFSET_TABLE_NAME
 123 #define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
 124 #endif
 125
 126 #if (defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) && !defined (LEX_AT)
 127 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) x86_cons (EXP, NBYTES)
 128 extern void x86_cons (expressionS *, int);
 129 #endif
 130
 131 #define TC_CONS_FIX_NEW(FRAG,OFF,LEN,EXP) x86_cons_fix_new(FRAG, OFF, LEN, EXP)
 132 extern void x86_cons_fix_new
 133   (fragS *, unsigned int, unsigned int, expressionS *);
 134
 135 #define DIFF_EXPR_OK    /* foo-. gets turned into PC relative relocs */
 136
 137 #define NO_RELOC BFD_RELOC_NONE
 138
 139 void i386_validate_fix (struct fix *);
 140 #define TC_VALIDATE_FIX(FIX,SEGTYPE,SKIP) i386_validate_fix(FIX)
 141
 142 #define tc_fix_adjustable(X)  tc_i386_fix_adjustable(X)
 143 extern int tc_i386_fix_adjustable (struct fix *);
 144
 145 /* Values passed to md_apply_fix don't include the symbol value.  */
 146 #define MD_APPLY_SYM_VALUE(FIX) 0
 147
 148 /* ELF wants external syms kept, as does PE COFF.  */
 149 #if defined (TE_PE) && defined (STRICT_PE_FORMAT)
 150 #define EXTERN_FORCE_RELOC                              \
 151   (OUTPUT_FLAVOR == bfd_target_elf_flavour              \
 152    || OUTPUT_FLAVOR == bfd_target_coff_flavour)
 153 #else
 154 #define EXTERN_FORCE_RELOC                              \
 155   (OUTPUT_FLAVOR == bfd_target_elf_flavour)
 156 #endif
 157
 158 /* This expression evaluates to true if the relocation is for a local
 159    object for which we still want to do the relocation at runtime.
 160    False if we are willing to perform this relocation while building
 161    the .o file.  GOTOFF and GOT32 do not need to be checked here because
 162    they are not pcrel.  .*/
 163
 164 #define TC_FORCE_RELOCATION_LOCAL(FIX)                  \
 165   (!(FIX)->fx_pcrel                                     \
 166    || (FIX)->fx_r_type == BFD_RELOC_386_PLT32           \
 167    || (FIX)->fx_r_type == BFD_RELOC_386_GOTPC           \
 168    || (FIX)->fx_r_type == BFD_RELOC_X86_64_GOTPCREL     \
 169    || TC_FORCE_RELOCATION (FIX))
 170
 171 extern int i386_parse_name (char *, expressionS *, char *);
 172 #define md_parse_name(s, e, m, c) i386_parse_name (s, e, c)
 173
 174 extern operatorT i386_operator (const char *name, unsigned int operands, char *);
 175 #define md_operator i386_operator
 176
 177 extern int i386_need_index_operator (void);
 178 #define md_need_index_operator i386_need_index_operator
 179
 180 #define md_register_arithmetic 0
 181
 182 extern const struct relax_type md_relax_table[];
 183 #define TC_GENERIC_RELAX_TABLE md_relax_table
 184
 185 extern int optimize_align_code;
 186
 187 #define md_do_align(n, fill, len, max, around)                          \
 188 if ((n)                                                                 \
 189     && !need_pass_2                                                     \
 190     && optimize_align_code                                              \
 191     && (!(fill)                                                         \
 192         || ((char)*(fill) == (char)0x90 && (len) == 1))                 \
 193     && subseg_text_p (now_seg))                                         \
 194   {                                                                     \
 195     frag_align_code ((n), (max));                                       \
 196     goto around;                                                        \
 197   }
 198
 199 #define MAX_MEM_FOR_RS_ALIGN_CODE  31
 200
 201 extern void i386_align_code (fragS *, int);
 202
 203 #define HANDLE_ALIGN(fragP)                                             \
 204 if (fragP->fr_type == rs_align_code)                                    \
 205   i386_align_code (fragP, (fragP->fr_next->fr_address                   \
 206                            - fragP->fr_address                          \
 207                            - fragP->fr_fix));
 208
 209 void i386_print_statistics (FILE *);
 210 #define tc_print_statistics i386_print_statistics
 211
 212 #define md_number_to_chars number_to_chars_littleendian
 213
 214 enum processor_type
 215 {
 216   PROCESSOR_UNKNOWN,
 217   PROCESSOR_I386,
 218   PROCESSOR_I486,
 219   PROCESSOR_PENTIUM,
 220   PROCESSOR_PENTIUMPRO,
 221   PROCESSOR_PENTIUM4,
 222   PROCESSOR_NOCONA,
 223   PROCESSOR_CORE,
 224   PROCESSOR_CORE2,
 225   PROCESSOR_COREI7,
 226   PROCESSOR_L1OM,
 227   PROCESSOR_K6,
 228   PROCESSOR_ATHLON,
 229   PROCESSOR_K8,
 230   PROCESSOR_GENERIC32,
 231   PROCESSOR_GENERIC64,
 232   PROCESSOR_AMDFAM10,
 233   PROCESSOR_BDVER1
 234 };
 235
 236 extern enum processor_type cpu_arch_tune;
 237 extern enum processor_type cpu_arch_isa;
 238 extern i386_cpu_flags cpu_arch_isa_flags;
 239
 240 struct i386_tc_frag_data
 241 {
 242   enum processor_type isa;
 243   i386_cpu_flags isa_flags;
 244   enum processor_type tune;
 245 };
 246
 247 /* We need to emit the right NOP pattern in .align frags.  This is
 248    done after the text-to-bits assembly pass, so we need to mark it with
 249    the isa/tune settings at the time the .align was assembled.  */
 250 #define TC_FRAG_TYPE struct i386_tc_frag_data
 251
 252 #define TC_FRAG_INIT(FRAGP)                                     \
 253  do                                                             \
 254    {                                                            \
 255      (FRAGP)->tc_frag_data.isa = cpu_arch_isa;                  \
 256      (FRAGP)->tc_frag_data.isa_flags = cpu_arch_isa_flags;      \
 257      (FRAGP)->tc_frag_data.tune = cpu_arch_tune;                \
 258    }                                                            \
 259  while (0)
 260
 261 #ifdef SCO_ELF
 262 #define tc_init_after_args() sco_id ()
 263 extern void sco_id (void);
 264 #endif
 265
 266 #define WORKING_DOT_WORD 1
 267
 268 /* We want .cfi_* pseudo-ops for generating unwind info.  */
 269 #define TARGET_USE_CFIPOP 1
 270
 271 extern unsigned int x86_dwarf2_return_column;
 272 #define DWARF2_DEFAULT_RETURN_COLUMN x86_dwarf2_return_column
 273
 274 extern int x86_cie_data_alignment;
 275 #define DWARF2_CIE_DATA_ALIGNMENT x86_cie_data_alignment
 276
 277 #define tc_parse_to_dw2regnum tc_x86_parse_to_dw2regnum
 278 extern void tc_x86_parse_to_dw2regnum (expressionS *);
 279
 280 #define tc_cfi_frame_initial_instructions tc_x86_frame_initial_instructions
 281 extern void tc_x86_frame_initial_instructions (void);
 282
 283 #define md_elf_section_type(str,len) i386_elf_section_type (str, len)
 284 extern int i386_elf_section_type (const char *, size_t);
 285
 286 #ifdef TE_SOLARIS
 287 #define md_fix_up_eh_frame(sec) i386_solaris_fix_up_eh_frame (sec)
 288 extern void i386_solaris_fix_up_eh_frame (segT);
 289 #endif
 290
 291 /* Support for SHF_X86_64_LARGE */
 292 extern bfd_vma x86_64_section_word (char *, size_t);
 293 extern bfd_vma x86_64_section_letter (int, char **);
 294 #define md_elf_section_letter(LETTER, PTR_MSG)  x86_64_section_letter (LETTER, PTR_MSG)
 295 #define md_elf_section_word(STR, LEN)           x86_64_section_word (STR, LEN)
 296
 297 #ifdef TE_PE
 298
 299 #define O_secrel O_md1
 300
 301 #define TC_DWARF2_EMIT_OFFSET  tc_pe_dwarf2_emit_offset
 302 void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int);
 303
 304 #endif /* TE_PE */
 305
 306 /* X_add_symbol:X_op_symbol (Intel mode only) */
 307 #define O_full_ptr O_md2
 308
 309 #endif /* TC_I386 */