gcc/config/i386/x86-64.h

   1 /* OS independent definitions for AMD x86-64.
   2    Copyright (C) 2001, 2005, 2007 Free Software Foundation, Inc.
   3    Contributed by Bo Thorsen <bo@suse.de>.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #undef ASM_COMMENT_START
  22 #define ASM_COMMENT_START "#"
  23
  24 #undef DBX_REGISTER_NUMBER
  25 #define DBX_REGISTER_NUMBER(n) \
  26   (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])
  27
  28 /* Output assembler code to FILE to call the profiler.  */
  29 #define NO_PROFILE_COUNTERS 1
  30
  31 #undef MCOUNT_NAME
  32 #define MCOUNT_NAME "mcount"
  33
  34 #undef SIZE_TYPE
  35 #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int")
  36
  37 #undef PTRDIFF_TYPE
  38 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
  39
  40 #undef WCHAR_TYPE
  41 #define WCHAR_TYPE "int"
  42
  43 #undef WCHAR_TYPE_SIZE
  44 #define WCHAR_TYPE_SIZE 32
  45
  46 #undef CC1_SPEC
  47 #define CC1_SPEC "%(cc1_cpu) %{profile:-p}"
  48
  49 #undef ASM_SPEC
  50 #define ASM_SPEC "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} \
  51  %{Wa,*:%*} %{m32:--32} %{m64:--64}"
  52
  53 #undef ASM_OUTPUT_ALIGNED_BSS
  54 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
  55   x86_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
  56
  57 #undef  ASM_OUTPUT_ALIGNED_COMMON
  58 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN)              \
  59   x86_elf_aligned_common (FILE, NAME, SIZE, ALIGN);
  60
  61 /* This is used to align code labels according to Intel recommendations.  */
  62
  63 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
  64 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP)                    \
  65   do {                                                                  \
  66     if ((LOG) != 0) {                                                   \
  67       if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG));  \
  68       else {                                                            \
  69         fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP));     \
  70         /* Make sure that we have at least 8 byte alignment if > 8 byte \
  71            alignment is preferred.  */                                  \
  72         if ((LOG) > 3 && (1 << (LOG)) > ((MAX_SKIP) + 1))               \
  73           fprintf ((FILE), "\t.p2align 3\n");                           \
  74       }                                                                 \
  75     }                                                                   \
  76   } while (0)
  77 #endif
  78
  79
  80 /* i386 System V Release 4 uses DWARF debugging info.
  81    x86-64 ABI specifies DWARF2.  */
  82
  83 #define DWARF2_DEBUGGING_INFO 1
  84 #define DWARF2_UNWIND_INFO 1
  85
  86 #undef PREFERRED_DEBUGGING_TYPE
  87 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
  88
  89 #undef TARGET_ASM_SELECT_SECTION
  90 #define TARGET_ASM_SELECT_SECTION  x86_64_elf_select_section
  91
  92 #undef TARGET_ASM_UNIQUE_SECTION
  93 #define TARGET_ASM_UNIQUE_SECTION  x86_64_elf_unique_section