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annotate gcc/config/gnu-user.h @ 158:494b0b89df80 default tip

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 1830386684a0
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* Definitions for systems using, at least optionally, a GNU
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2 (glibc-based) userspace or other userspace with libc derived from
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3 glibc (e.g. uClibc) or for which similar specs are appropriate.
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4 Copyright (C) 1995-2020 Free Software Foundation, Inc.
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5 Contributed by Eric Youngdale.
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6 Modified for stabs-in-ELF by H.J. Lu (hjl@lucon.org).
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7
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8 This file is part of GCC.
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9
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10 GCC is free software; you can redistribute it and/or modify
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11 it under the terms of the GNU General Public License as published by
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12 the Free Software Foundation; either version 3, or (at your option)
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13 any later version.
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14
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15 GCC is distributed in the hope that it will be useful,
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16 but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 GNU General Public License for more details.
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19
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20 Under Section 7 of GPL version 3, you are granted additional
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21 permissions described in the GCC Runtime Library Exception, version
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22 3.1, as published by the Free Software Foundation.
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23
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24 You should have received a copy of the GNU General Public License and
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25 a copy of the GCC Runtime Library Exception along with this program;
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26 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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27 <http://www.gnu.org/licenses/>. */
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28
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29 #undef ASM_APP_ON
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30 #define ASM_APP_ON "#APP\n"
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31
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32 #undef ASM_APP_OFF
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33 #define ASM_APP_OFF "#NO_APP\n"
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34
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35 #if ENABLE_OFFLOADING == 1
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36 #define CRTOFFLOADBEGIN "%{fopenacc|fopenmp:crtoffloadbegin%O%s}"
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37 #define CRTOFFLOADEND "%{fopenacc|fopenmp:crtoffloadend%O%s}"
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38 #else
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39 #define CRTOFFLOADBEGIN ""
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40 #define CRTOFFLOADEND ""
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41 #endif
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42
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43 #define GNU_USER_TARGET_CRTI "crti.o%s"
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44 #define GNU_USER_TARGET_CRTN "crtn.o%s"
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45
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46 /* Provide a STARTFILE_SPEC appropriate for GNU userspace. Here we add
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47 the GNU userspace magical crtbegin.o file (see crtstuff.c) which
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48 provides part of the support for getting C++ file-scope static
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49 object constructed before entering `main'. */
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50
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51 #define GNU_USER_TARGET_STARTFILE_SPEC \
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52 "%{shared:; \
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53 pg|p|profile:%{static-pie:grcrt1.o%s;:gcrt1.o%s}; \
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54 static:crt1.o%s; \
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55 static-pie:rcrt1.o%s; \
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56 " PIE_SPEC ":Scrt1.o%s; \
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57 :crt1.o%s} " \
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58 GNU_USER_TARGET_CRTI " \
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59 %{static:crtbeginT.o%s; \
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60 shared|static-pie|" PIE_SPEC ":crtbeginS.o%s; \
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61 :crtbegin.o%s} \
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62 %{fvtable-verify=none:%s; \
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63 fvtable-verify=preinit:vtv_start_preinit.o%s; \
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64 fvtable-verify=std:vtv_start.o%s} " \
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65 CRTOFFLOADBEGIN
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66 #undef STARTFILE_SPEC
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67 #define STARTFILE_SPEC GNU_USER_TARGET_STARTFILE_SPEC
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68
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69 /* Provide a ENDFILE_SPEC appropriate for GNU userspace. Here we tack on
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70 the GNU userspace magical crtend.o file (see crtstuff.c) which
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71 provides part of the support for getting C++ file-scope static
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72 object constructed before entering `main', followed by a normal
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73 GNU userspace "finalizer" file, `crtn.o'. */
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74
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75 #define GNU_USER_TARGET_ENDFILE_SPEC \
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76 "%{!static:%{fvtable-verify=none:%s; \
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77 fvtable-verify=preinit:vtv_end_preinit.o%s; \
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78 fvtable-verify=std:vtv_end.o%s}} \
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79 %{static:crtend.o%s; \
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80 shared|static-pie|" PIE_SPEC ":crtendS.o%s; \
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81 :crtend.o%s} " \
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82 GNU_USER_TARGET_CRTN " " \
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83 CRTOFFLOADEND
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84 #undef ENDFILE_SPEC
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85 #define ENDFILE_SPEC GNU_USER_TARGET_ENDFILE_SPEC
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86
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87 /* This is for -profile to use -lc_p instead of -lc. */
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88 #define GNU_USER_TARGET_CC1_SPEC "%{profile:-p}"
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89 #ifndef CC1_SPEC
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90 #define CC1_SPEC GNU_USER_TARGET_CC1_SPEC
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91 #endif
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92
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93 /* The GNU C++ standard library requires that these macros be defined. */
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94 #undef CPLUSPLUS_CPP_SPEC
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95 #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
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96
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97 #define GNU_USER_TARGET_NO_PTHREADS_LIB_SPEC \
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98 "%{shared:-lc} \
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99 %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
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100
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101 #define GNU_USER_TARGET_LIB_SPEC \
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102 "%{pthread:-lpthread} " \
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103 GNU_USER_TARGET_NO_PTHREADS_LIB_SPEC
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104
68
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105 #undef LIB_SPEC
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106 #define LIB_SPEC GNU_USER_TARGET_LIB_SPEC
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107
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108 #if defined(HAVE_LD_EH_FRAME_HDR)
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109 #define LINK_EH_SPEC "%{!static|static-pie:--eh-frame-hdr} "
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110 #endif
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111
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112 #define GNU_USER_TARGET_LINK_GCC_C_SEQUENCE_SPEC \
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113 "%{static|static-pie:--start-group} %G %{!nolibc:%L} \
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114 %{static|static-pie:--end-group}%{!static:%{!static-pie:%G}}"
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115
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116 #undef LINK_GCC_C_SEQUENCE_SPEC
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117 #define LINK_GCC_C_SEQUENCE_SPEC GNU_USER_TARGET_LINK_GCC_C_SEQUENCE_SPEC
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118
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119 /* Use --as-needed -lgcc_s for eh support. */
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120 #ifdef HAVE_LD_AS_NEEDED
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121 #define USE_LD_AS_NEEDED 1
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122 #endif
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123
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124 #define TARGET_POSIX_IO
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125
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126 #undef TARGET_LIBC_HAS_FUNCTION
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127 #define TARGET_LIBC_HAS_FUNCTION gnu_libc_has_function
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128
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129 /* Link -lasan early on the command line. For -static-libasan, don't link
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130 it for -shared link, the executable should be compiled with -static-libasan
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131 in that case, and for executable link with --{,no-}whole-archive around
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132 it to force everything into the executable. And similarly for -ltsan
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133 and -llsan. */
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134 #if defined(HAVE_LD_STATIC_DYNAMIC)
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135 #undef LIBASAN_EARLY_SPEC
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136 #define LIBASAN_EARLY_SPEC "%{!shared:libasan_preinit%O%s} " \
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137 "%{static-libasan:%{!shared:" \
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138 LD_STATIC_OPTION " --whole-archive -lasan --no-whole-archive " \
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139 LD_DYNAMIC_OPTION "}}%{!static-libasan:-lasan}"
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140 #undef LIBTSAN_EARLY_SPEC
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141 #define LIBTSAN_EARLY_SPEC "%{!shared:libtsan_preinit%O%s} " \
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142 "%{static-libtsan:%{!shared:" \
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143 LD_STATIC_OPTION " --whole-archive -ltsan --no-whole-archive " \
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144 LD_DYNAMIC_OPTION "}}%{!static-libtsan:-ltsan}"
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145 #undef LIBLSAN_EARLY_SPEC
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146 #define LIBLSAN_EARLY_SPEC "%{!shared:liblsan_preinit%O%s} " \
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147 "%{static-liblsan:%{!shared:" \
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148 LD_STATIC_OPTION " --whole-archive -llsan --no-whole-archive " \
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149 LD_DYNAMIC_OPTION "}}%{!static-liblsan:-llsan}"
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150 #endif
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151
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152 #undef TARGET_F951_OPTIONS
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153 #define TARGET_F951_OPTIONS "%{!nostdinc:\
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154 %:fortran-preinclude-file(-fpre-include= math-vector-fortran.h finclude%s/)}"