annotate gcc/config/i386/x86-64.h @ 55:77e2b8dfacca gcc-4.4.5

update it from 4.4.3 to 4.5.0
author ryoma <e075725@ie.u-ryukyu.ac.jp>
date Fri, 12 Feb 2010 23:39:51 +0900
parents 58ad6c70ea60
children f6334be47118
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1 /* OS independent definitions for AMD x86-64.
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2 Copyright (C) 2001, 2005, 2007, 2009 Free Software Foundation, Inc.
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3 Contributed by Bo Thorsen <bo@suse.de>.
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4
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5 This file is part of GCC.
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6
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7 GCC is free software; you can redistribute it and/or modify
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8 it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 3, or (at your option)
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10 any later version.
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11
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12 GCC is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 Under Section 7 of GPL version 3, you are granted additional
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18 permissions described in the GCC Runtime Library Exception, version
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19 3.1, as published by the Free Software Foundation.
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20
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21 You should have received a copy of the GNU General Public License and
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22 a copy of the GCC Runtime Library Exception along with this program;
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23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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24 <http://www.gnu.org/licenses/>. */
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25
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26 #undef ASM_COMMENT_START
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27 #define ASM_COMMENT_START "#"
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28
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29 #undef DBX_REGISTER_NUMBER
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30 #define DBX_REGISTER_NUMBER(n) \
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31 (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])
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32
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33 /* Output assembler code to FILE to call the profiler. */
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34 #define NO_PROFILE_COUNTERS 1
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35
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36 #undef MCOUNT_NAME
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37 #define MCOUNT_NAME "mcount"
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38
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39 #undef SIZE_TYPE
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40 #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int")
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41
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42 #undef PTRDIFF_TYPE
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43 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
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44
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45 #undef WCHAR_TYPE
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46 #define WCHAR_TYPE "int"
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47
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48 #undef WCHAR_TYPE_SIZE
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49 #define WCHAR_TYPE_SIZE 32
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50
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51 #undef CC1_SPEC
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52 #define CC1_SPEC "%(cc1_cpu) %{profile:-p}"
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53
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54 #undef ASM_SPEC
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55 #define ASM_SPEC "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} \
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56 %{Wa,*:%*} %{m32:--32} %{m64:--64}"
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57
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58 #undef ASM_OUTPUT_ALIGNED_BSS
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59 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
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60 x86_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
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61
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62 #undef ASM_OUTPUT_ALIGNED_COMMON
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63 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \
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64 x86_elf_aligned_common (FILE, NAME, SIZE, ALIGN);
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65
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66 /* This is used to align code labels according to Intel recommendations. */
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67
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68 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
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69 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
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70 do { \
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71 if ((LOG) != 0) { \
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72 if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
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73 else { \
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74 fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
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75 /* Make sure that we have at least 8 byte alignment if > 8 byte \
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76 alignment is preferred. */ \
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77 if ((LOG) > 3 \
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78 && (1 << (LOG)) > ((MAX_SKIP) + 1) \
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79 && (MAX_SKIP) >= 7) \
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80 fputs ("\t.p2align 3\n", (FILE)); \
0
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81 } \
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82 } \
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83 } while (0)
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84 #undef ASM_OUTPUT_MAX_SKIP_PAD
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85 #define ASM_OUTPUT_MAX_SKIP_PAD(FILE, LOG, MAX_SKIP) \
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86 if ((LOG) != 0) \
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87 { \
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88 if ((MAX_SKIP) == 0) \
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89 fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
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90 else \
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91 fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
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92 }
0
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93 #endif
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94
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95
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96 /* i386 System V Release 4 uses DWARF debugging info.
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97 x86-64 ABI specifies DWARF2. */
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98
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99 #define DWARF2_DEBUGGING_INFO 1
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100 #define DWARF2_UNWIND_INFO 1
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101
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102 #undef PREFERRED_DEBUGGING_TYPE
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103 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
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104
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105 #undef TARGET_ASM_SELECT_SECTION
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106 #define TARGET_ASM_SELECT_SECTION x86_64_elf_select_section
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107
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108 #undef TARGET_ASM_UNIQUE_SECTION
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109 #define TARGET_ASM_UNIQUE_SECTION x86_64_elf_unique_section