Mercurial > hg > CbC > CbC_gcc
annotate gcc/collect2-aix.h @ 158:494b0b89df80 default tip
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 1830386684a0 |
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rev | line source |
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1 /* AIX cross support for collect2. |
145 | 2 Copyright (C) 2009-2020 Free Software Foundation, Inc. |
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3 |
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4 This file is part of GCC. |
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5 |
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6 GCC is free software; you can redistribute it and/or modify it under |
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7 the terms of the GNU General Public License as published by the Free |
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8 Software Foundation; either version 3, or (at your option) any later |
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9 version. |
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10 |
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11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
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12 WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 for more details. |
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15 |
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16 You should have received a copy of the GNU General Public License |
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17 along with GCC; see the file COPYING3. If not see |
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18 <http://www.gnu.org/licenses/>. */ |
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19 |
111 | 20 #ifndef GCC_COLLECT2_AIX_H |
21 #define GCC_COLLECT2_AIX_H | |
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22 /* collect2-aix.c requires mmap support. It should otherwise be |
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23 fairly portable. */ |
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24 #if defined(CROSS_DIRECTORY_STRUCTURE) \ |
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25 && defined(TARGET_AIX_VERSION) \ |
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26 && HAVE_MMAP |
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27 |
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28 #define CROSS_AIX_SUPPORT 1 |
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29 |
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30 /* ------------------------------------------------------------------------- |
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31 Definitions adapted from bfd. (Fairly heavily adapted in some cases.) |
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32 ------------------------------------------------------------------------- */ |
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33 |
111 | 34 /* Compatibility types for bfd. */ |
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35 typedef unsigned HOST_WIDE_INT bfd_vma; |
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36 |
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37 /* The size of an archive's fl_magic field. */ |
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38 #define FL_MAGIC_SIZE 8 |
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39 |
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40 /* The expected contents of fl_magic for big archives. */ |
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41 #define FL_MAGIC_BIG_AR "<bigaf>\012" |
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42 |
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43 /* The size of each offset string in the header of a big archive. */ |
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44 #define AR_BIG_OFFSET_SIZE 20 |
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45 |
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46 /* The format of the file header in a "big" XCOFF archive. */ |
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47 struct external_big_ar_filehdr |
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48 { |
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49 /* Magic string. */ |
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50 char fl_magic[FL_MAGIC_SIZE]; |
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51 |
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52 /* Offset of the member table (decimal ASCII string). */ |
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53 char fl_memoff[AR_BIG_OFFSET_SIZE]; |
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54 |
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55 /* Offset of the global symbol table for 32-bit objects (decimal ASCII |
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56 string). */ |
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57 char fl_symoff[AR_BIG_OFFSET_SIZE]; |
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58 |
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59 /* Offset of the global symbol table for 64-bit objects (decimal ASCII |
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60 string). */ |
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61 char fl_symoff64[AR_BIG_OFFSET_SIZE]; |
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62 |
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63 /* Offset of the first member in the archive (decimal ASCII string). */ |
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64 char fl_firstmemoff[AR_BIG_OFFSET_SIZE]; |
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65 |
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66 /* Offset of the last member in the archive (decimal ASCII string). */ |
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67 char fl_lastmemoff[AR_BIG_OFFSET_SIZE]; |
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68 |
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69 /* Offset of the first member on the free list (decimal ASCII |
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70 string). */ |
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71 char fl_freeoff[AR_BIG_OFFSET_SIZE]; |
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72 }; |
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73 |
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74 /* Each archive name is followed by this many bytes of magic string. */ |
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75 #define SXCOFFARFMAG 2 |
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76 |
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77 /* The format of a member header in a "big" XCOFF archive. */ |
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78 struct external_big_ar_member |
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79 { |
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80 /* File size not including the header (decimal ASCII string). */ |
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81 char ar_size[AR_BIG_OFFSET_SIZE]; |
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82 |
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83 /* File offset of next archive member (decimal ASCII string). */ |
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84 char ar_nextoff[AR_BIG_OFFSET_SIZE]; |
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85 |
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86 /* File offset of previous archive member (decimal ASCII string). */ |
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87 char ar_prevoff[AR_BIG_OFFSET_SIZE]; |
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88 |
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89 /* File mtime (decimal ASCII string). */ |
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90 char ar_date[12]; |
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91 |
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92 /* File UID (decimal ASCII string). */ |
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93 char ar_uid[12]; |
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94 |
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95 /* File GID (decimal ASCII string). */ |
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96 char ar_gid[12]; |
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97 |
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98 /* File mode (octal ASCII string). */ |
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99 char ar_mode[12]; |
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100 |
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101 /* Length of file name (decimal ASCII string). */ |
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102 char ar_namlen[4]; |
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103 |
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104 /* This structure is followed by the file name. The length of the |
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105 name is given in the namlen field. If the length of the name is |
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106 odd, the name is followed by a null byte. The name and optional |
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107 null byte are followed by XCOFFARFMAG, which is not included in |
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108 namlen. The contents of the archive member follow; the number of |
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109 bytes is given in the size field. */ |
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110 }; |
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111 |
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112 /* The known values of f_magic in an XCOFF file header. */ |
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113 #define U802WRMAGIC 0730 /* Writeable text segments. */ |
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114 #define U802ROMAGIC 0735 /* Readonly sharable text segments. */ |
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115 #define U802TOCMAGIC 0737 /* Readonly text segments and TOC. */ |
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116 #define U803XTOCMAGIC 0757 /* Aix 4.3 64-bit XCOFF. */ |
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117 #define U64_TOCMAGIC 0767 /* AIX 5+ 64-bit XCOFF. */ |
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118 |
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|
119 /* The number of bytes in an XCOFF file's f_magic field. */ |
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120 #define F_MAGIC_SIZE 2 |
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121 |
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122 /* The format of a 32-bit XCOFF file header. */ |
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123 struct external_filehdr_32 |
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124 { |
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125 /* The magic number. */ |
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126 char f_magic[F_MAGIC_SIZE]; |
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127 |
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128 /* The number of sections. */ |
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129 char f_nscns[2]; |
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130 |
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131 /* Time & date stamp. */ |
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132 char f_timdat[4]; |
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133 |
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134 /* The offset of the symbol table from the start of the file. */ |
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135 char f_symptr[4]; |
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136 |
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137 /* The number of entries in the symbol table. */ |
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138 char f_nsyms[4]; |
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139 |
111 | 140 /* The size of the auxiliary header. */ |
55
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141 char f_opthdr[2]; |
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142 |
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143 /* Flags. */ |
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144 char f_flags[2]; |
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145 }; |
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146 |
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147 /* The format of a 64-bit XCOFF file header. */ |
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148 struct external_filehdr_64 |
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149 { |
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150 /* The magic number. */ |
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151 char f_magic[F_MAGIC_SIZE]; |
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152 |
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|
153 /* The number of sections. */ |
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154 char f_nscns[2]; |
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155 |
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156 /* Time & date stamp. */ |
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|
157 char f_timdat[4]; |
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|
158 |
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|
159 /* The offset of the symbol table from the start of the file. */ |
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|
160 char f_symptr[8]; |
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161 |
111 | 162 /* The size of the auxiliary header. */ |
55
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|
163 char f_opthdr[2]; |
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164 |
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|
165 /* Flags. */ |
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|
166 char f_flags[2]; |
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|
167 |
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|
168 /* The number of entries in the symbol table. */ |
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|
169 char f_nsyms[4]; |
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|
170 }; |
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171 |
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|
172 /* An internal representation of the XCOFF file header. */ |
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|
173 struct internal_filehdr |
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|
174 { |
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|
175 unsigned short f_magic; |
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|
176 unsigned short f_nscns; |
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|
177 long f_timdat; |
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|
178 bfd_vma f_symptr; |
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|
179 long f_nsyms; |
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|
180 unsigned short f_opthdr; |
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|
181 unsigned short f_flags; |
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parents:
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|
182 }; |
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parents:
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|
183 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
184 /* Symbol classes have their names in the debug section if this flag |
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parents:
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changeset
|
185 is set. */ |
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|
186 #define DBXMASK 0x80 |
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|
187 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
188 /* The format of an XCOFF symbol-table entry. */ |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
189 struct external_syment |
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parents:
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changeset
|
190 { |
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parents:
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|
191 union { |
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parents:
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|
192 struct { |
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parents:
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|
193 union { |
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parents:
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changeset
|
194 /* The name of the symbol. There is an implicit null character |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
195 after the end of the array. */ |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
196 char n_name[8]; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
197 struct { |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
198 /* If n_zeroes is zero, n_offset is the offset the name from |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
199 the start of the string table. */ |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
200 char n_zeroes[4]; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
201 char n_offset[4]; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
202 } u; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
203 } u; |
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parents:
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changeset
|
204 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
205 /* The symbol's value. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
206 char n_value[4]; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
207 } xcoff32; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
208 struct { |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
209 /* The symbol's value. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
210 char n_value[8]; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
211 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
212 /* The offset of the symbol from the start of the string table. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
213 char n_offset[4]; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
214 } xcoff64; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
215 } u; |
77e2b8dfacca
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parents:
diff
changeset
|
216 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
217 /* The number of the section to which this symbol belongs. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
218 char n_scnum[2]; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
219 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
220 /* The type of symbol. (It can be interpreted as an n_lang |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
221 and an n_cpu byte, but we don't care about that here.) */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
222 char n_type[2]; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
223 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
224 /* The class of symbol (a C_* value). */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
225 char n_sclass[1]; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
226 |
111 | 227 /* The number of auxiliary symbols attached to this entry. */ |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
228 char n_numaux[1]; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
229 }; |
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230 |
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231 /* Definitions required by collect2. */ |
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232 #define C_EXT 2 |
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233 |
111 | 234 #define F_SHROBJ 0x2000 |
235 #define F_LOADONLY 0x4000 | |
55
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236 |
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237 #define N_UNDEF ((short) 0) |
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238 #define N_TMASK 060 |
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239 #define N_BTSHFT 4 |
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240 |
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241 #define DT_NON 0 |
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242 #define DT_FCN 2 |
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243 |
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244 /* ------------------------------------------------------------------------- |
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245 Local code. |
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246 ------------------------------------------------------------------------- */ |
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247 |
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248 /* An internal representation of an XCOFF symbol-table entry, |
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249 which is associated with the API-defined SYMENT type. */ |
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250 struct internal_syment |
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251 { |
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252 char n_name[9]; |
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253 unsigned int n_zeroes; |
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254 bfd_vma n_offset; |
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255 bfd_vma n_value; |
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256 short n_scnum; |
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257 unsigned short n_flags; |
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258 unsigned short n_type; |
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259 unsigned char n_sclass; |
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260 unsigned char n_numaux; |
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261 }; |
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262 typedef struct internal_syment SYMENT; |
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263 |
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264 /* The internal representation of the API-defined LDFILE type. */ |
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265 struct internal_ldfile |
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266 { |
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267 /* The file handle for the associated file, or -1 if it hasn't been |
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268 opened yet. */ |
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269 int fd; |
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270 |
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271 /* The start of the current XCOFF object, if one has been mapped |
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272 into memory. Null otherwise. */ |
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273 char *object; |
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274 |
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275 /* The offset of OBJECT from the start of the containing page. */ |
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276 size_t page_offset; |
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277 |
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278 /* The size of the file pointed to by OBJECT. Valid iff OFFSET |
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279 is nonnull. */ |
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280 size_t object_size; |
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281 |
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282 /* The offset of the next member in an archive after OBJECT, |
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283 or -1 if this isn't an archive. Valid iff OFFSET is nonnull. */ |
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284 off_t next_member; |
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285 |
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286 /* The parsed version of the XCOFF file header. */ |
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287 struct internal_filehdr filehdr; |
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288 }; |
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289 typedef struct internal_ldfile LDFILE; |
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290 |
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291 /* The API allows the file header to be directly accessed via this macro. */ |
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292 #define HEADER(FILE) ((FILE)->filehdr) |
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293 |
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294 /* API-defined return codes. SUCCESS must be > 0 and FAILURE must be <= 0. */ |
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295 #define SUCCESS 1 |
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296 #define FAILURE 0 |
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297 |
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298 /* API-defined functions. */ |
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299 extern LDFILE *ldopen (char *, LDFILE *); |
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300 extern char *ldgetname (LDFILE *, SYMENT *); |
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301 extern int ldtbread (LDFILE *, long, SYMENT *); |
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302 extern int ldclose (LDFILE *); |
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303 |
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304 #endif |
111 | 305 |
306 #endif /* GCC_COLLECT2_AIX_H */ |