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, 2011, 2012
   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 #elif defined (TE_NACL)
  65 #define ELF_TARGET_FORMAT       "elf32-i386-nacl"
  66 #define ELF_TARGET_FORMAT32     "elf32-x86-64-nacl"
  67 #define ELF_TARGET_FORMAT64     "elf64-x86-64-nacl"
  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 #if ((defined (OBJ_MAYBE_COFF) && defined (OBJ_MAYBE_AOUT)) \
  96      || defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) \
  97      || defined (TE_PE) || defined (TE_PEP) || defined (OBJ_MACH_O))
  98 extern const char *i386_target_format (void);
  99 #define TARGET_FORMAT i386_target_format ()
 100 #else
 101 #ifdef TE_GO32
 102 #define TARGET_FORMAT           "coff-go32"
 103 #endif
 104 #ifdef OBJ_AOUT
 105 #define TARGET_FORMAT           AOUT_TARGET_FORMAT
 106 #endif
 107 #endif
 108
 109 #if (defined (OBJ_MAYBE_ELF) || defined (OBJ_ELF))
 110 #define md_end i386_elf_emit_arch_note
 111 extern void i386_elf_emit_arch_note (void);
 112 #endif
 113
 114 #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
 115
 116 /* '$' may be used as immediate prefix.  */
 117 #undef LOCAL_LABELS_DOLLAR
 118 #define LOCAL_LABELS_DOLLAR 0
 119 #undef LOCAL_LABELS_FB
 120 #define LOCAL_LABELS_FB 1
 121
 122 extern const char extra_symbol_chars[];
 123 #define tc_symbol_chars extra_symbol_chars
 124
 125 extern const char *i386_comment_chars;
 126 #define tc_comment_chars i386_comment_chars
 127
 128 /* The name of the global offset table generated by the compiler. Allow
 129    this to be overridden if need be.  */
 130 #ifndef GLOBAL_OFFSET_TABLE_NAME
 131 #define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
 132 #endif
 133
 134 #if (defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) && !defined (LEX_AT)
 135 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) x86_cons (EXP, NBYTES)
 136 #endif
 137 extern void x86_cons (expressionS *, int);
 138
 139 #define TC_CONS_FIX_NEW(FRAG,OFF,LEN,EXP) x86_cons_fix_new(FRAG, OFF, LEN, EXP)
 140 extern void x86_cons_fix_new
 141   (fragS *, unsigned int, unsigned int, expressionS *);
 142
 143 #define DIFF_EXPR_OK    /* foo-. gets turned into PC relative relocs */
 144
 145 #define NO_RELOC BFD_RELOC_NONE
 146
 147 void i386_validate_fix (struct fix *);
 148 #define TC_VALIDATE_FIX(FIX,SEGTYPE,SKIP) i386_validate_fix(FIX)
 149
 150 #define tc_fix_adjustable(X)  tc_i386_fix_adjustable(X)
 151 extern int tc_i386_fix_adjustable (struct fix *);
 152
 153 /* Values passed to md_apply_fix don't include the symbol value.  */
 154 #define MD_APPLY_SYM_VALUE(FIX) 0
 155
 156 /* ELF wants external syms kept, as does PE COFF.  */
 157 #if defined (TE_PE) && defined (STRICT_PE_FORMAT)
 158 #define EXTERN_FORCE_RELOC                              \
 159   (OUTPUT_FLAVOR == bfd_target_elf_flavour              \
 160    || OUTPUT_FLAVOR == bfd_target_coff_flavour)
 161 #else
 162 #define EXTERN_FORCE_RELOC                              \
 163   (OUTPUT_FLAVOR == bfd_target_elf_flavour)
 164 #endif
 165
 166 /* This expression evaluates to true if the relocation is for a local
 167    object for which we still want to do the relocation at runtime.
 168    False if we are willing to perform this relocation while building
 169    the .o file.  GOTOFF and GOT32 do not need to be checked here because
 170    they are not pcrel.  .*/
 171
 172 #define TC_FORCE_RELOCATION_LOCAL(FIX)                  \
 173   (!(FIX)->fx_pcrel                                     \
 174    || (FIX)->fx_r_type == BFD_RELOC_386_PLT32           \
 175    || (FIX)->fx_r_type == BFD_RELOC_386_GOTPC           \
 176    || (FIX)->fx_r_type == BFD_RELOC_X86_64_GOTPCREL     \
 177    || TC_FORCE_RELOCATION (FIX))
 178
 179 extern int i386_parse_name (char *, expressionS *, char *);
 180 #define md_parse_name(s, e, m, c) i386_parse_name (s, e, c)
 181
 182 extern operatorT i386_operator (const char *name, unsigned int operands, char *);
 183 #define md_operator i386_operator
 184
 185 extern int i386_need_index_operator (void);
 186 #define md_need_index_operator i386_need_index_operator
 187
 188 #define md_register_arithmetic 0
 189
 190 extern const struct relax_type md_relax_table[];
 191 #define TC_GENERIC_RELAX_TABLE md_relax_table
 192
 193 extern int optimize_align_code;
 194
 195 #define md_do_align(n, fill, len, max, around)                          \
 196 if ((n)                                                                 \
 197     && !need_pass_2                                                     \
 198     && optimize_align_code                                              \
 199     && (!(fill)                                                         \
 200         || ((char)*(fill) == (char)0x90 && (len) == 1))                 \
 201     && subseg_text_p (now_seg))                                         \
 202   {                                                                     \
 203     frag_align_code ((n), (max));                                       \
 204     goto around;                                                        \
 205   }
 206
 207 #define MAX_MEM_FOR_RS_ALIGN_CODE  31
 208
 209 extern void i386_align_code (fragS *, int);
 210
 211 #define HANDLE_ALIGN(fragP)                                             \
 212 if (fragP->fr_type == rs_align_code)                                    \
 213   i386_align_code (fragP, (fragP->fr_next->fr_address                   \
 214                            - fragP->fr_address                          \
 215                            - fragP->fr_fix));
 216
 217 void i386_print_statistics (FILE *);
 218 #define tc_print_statistics i386_print_statistics
 219
 220 extern unsigned int i386_frag_max_var (fragS *);
 221 #define md_frag_max_var i386_frag_max_var
 222
 223 #define md_number_to_chars number_to_chars_littleendian
 224
 225 enum processor_type
 226 {
 227   PROCESSOR_UNKNOWN,
 228   PROCESSOR_I386,
 229   PROCESSOR_I486,
 230   PROCESSOR_PENTIUM,
 231   PROCESSOR_PENTIUMPRO,
 232   PROCESSOR_PENTIUM4,
 233   PROCESSOR_NOCONA,
 234   PROCESSOR_CORE,
 235   PROCESSOR_CORE2,
 236   PROCESSOR_COREI7,
 237   PROCESSOR_L1OM,
 238   PROCESSOR_K1OM,
 239   PROCESSOR_K6,
 240   PROCESSOR_ATHLON,
 241   PROCESSOR_K8,
 242   PROCESSOR_GENERIC32,
 243   PROCESSOR_GENERIC64,
 244   PROCESSOR_AMDFAM10,
 245   PROCESSOR_BD
 246 };
 247
 248 extern enum processor_type cpu_arch_tune;
 249 extern enum processor_type cpu_arch_isa;
 250 extern i386_cpu_flags cpu_arch_isa_flags;
 251
 252 struct i386_tc_frag_data
 253 {
 254   enum processor_type isa;
 255   i386_cpu_flags isa_flags;
 256   enum processor_type tune;
 257 };
 258
 259 /* We need to emit the right NOP pattern in .align frags.  This is
 260    done after the text-to-bits assembly pass, so we need to mark it with
 261    the isa/tune settings at the time the .align was assembled.  */
 262 #define TC_FRAG_TYPE struct i386_tc_frag_data
 263
 264 #define TC_FRAG_INIT(FRAGP)                                     \
 265  do                                                             \
 266    {                                                            \
 267      (FRAGP)->tc_frag_data.isa = cpu_arch_isa;                  \
 268      (FRAGP)->tc_frag_data.isa_flags = cpu_arch_isa_flags;      \
 269      (FRAGP)->tc_frag_data.tune = cpu_arch_tune;                \
 270    }                                                            \
 271  while (0)
 272
 273 #ifdef SCO_ELF
 274 #define tc_init_after_args() sco_id ()
 275 extern void sco_id (void);
 276 #endif
 277
 278 #define WORKING_DOT_WORD 1
 279
 280 /* We want .cfi_* pseudo-ops for generating unwind info.  */
 281 #define TARGET_USE_CFIPOP 1
 282
 283 extern unsigned int x86_dwarf2_return_column;
 284 #define DWARF2_DEFAULT_RETURN_COLUMN x86_dwarf2_return_column
 285
 286 extern int x86_cie_data_alignment;
 287 #define DWARF2_CIE_DATA_ALIGNMENT x86_cie_data_alignment
 288
 289 extern int x86_dwarf2_addr_size (void);
 290 #define DWARF2_ADDR_SIZE(bfd) x86_dwarf2_addr_size ()
 291
 292 #define tc_parse_to_dw2regnum tc_x86_parse_to_dw2regnum
 293 extern void tc_x86_parse_to_dw2regnum (expressionS *);
 294
 295 #define tc_cfi_frame_initial_instructions tc_x86_frame_initial_instructions
 296 extern void tc_x86_frame_initial_instructions (void);
 297
 298 #define md_elf_section_type(str,len) i386_elf_section_type (str, len)
 299 extern int i386_elf_section_type (const char *, size_t);
 300
 301 #ifdef TE_SOLARIS
 302 #define md_fix_up_eh_frame(sec) i386_solaris_fix_up_eh_frame (sec)
 303 extern void i386_solaris_fix_up_eh_frame (segT);
 304 #endif
 305
 306 /* Support for SHF_X86_64_LARGE */
 307 extern bfd_vma x86_64_section_word (char *, size_t);
 308 extern bfd_vma x86_64_section_letter (int, char **);
 309 #define md_elf_section_letter(LETTER, PTR_MSG)  x86_64_section_letter (LETTER, PTR_MSG)
 310 #define md_elf_section_word(STR, LEN)           x86_64_section_word (STR, LEN)
 311
 312 #ifdef TE_PE
 313
 314 #define O_secrel O_md1
 315
 316 #define TC_DWARF2_EMIT_OFFSET  tc_pe_dwarf2_emit_offset
 317 void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int);
 318
 319 #endif /* TE_PE */
 320
 321 /* X_add_symbol:X_op_symbol (Intel mode only) */
 322 #define O_full_ptr O_md2
 323
 324 #ifdef OBJ_MACH_O
 325
 326 #define TC_FORCE_RELOCATION(FIX) (obj_mach_o_force_reloc (FIX))
 327
 328 #define TC_FORCE_RELOCATION_SUB_SAME(FIX,SEG) \
 329           (obj_mach_o_force_reloc_sub_same (FIX, SEG))
 330
 331 #define TC_FORCE_RELOCATION_SUB_LOCAL(FIX,SEG) \
 332         (obj_mach_o_force_reloc_sub_local (FIX, SEG))
 333
 334 #define TC_VALIDATE_FIX_SUB(FIX, SEG) 1
 335
 336 #endif /* OBJ_MACH_O */
 337
 338 #endif /* TC_I386 */