1 | /* Collect static initialization info into data structures |
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2 | that can be traversed by C++ initialization and finalization |
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3 | routines. |
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4 | |
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5 | Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc. |
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6 | Contributed by Chris Smith (csmith@convex.com). |
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7 | Heavily modified by Michael Meissner (meissner@cygnus.com), |
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8 | Per Bothner (bothner@cygnus.com), and John Gilmore (gnu@cygnus.com). |
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9 | |
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10 | This file is part of GNU CC. |
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11 | |
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12 | GNU CC is free software; you can redistribute it and/or modify |
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13 | it under the terms of the GNU General Public License as published by |
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14 | the Free Software Foundation; either version 2, or (at your option) |
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15 | any later version. |
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16 | |
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17 | GNU CC is distributed in the hope that it will be useful, |
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18 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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20 | GNU General Public License for more details. |
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21 | |
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22 | You should have received a copy of the GNU General Public License |
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23 | along with GNU CC; see the file COPYING. If not, write to |
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24 | the Free Software Foundation, 59 Temple Place - Suite 330, |
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25 | Boston, MA 02111-1307, USA. */ |
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26 | |
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27 | |
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28 | /* Build tables of static constructors and destructors and run ld. */ |
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29 | |
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30 | #include "config.h" |
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31 | #include <sys/types.h> |
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32 | #include <stdio.h> |
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33 | #include <ctype.h> |
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34 | #include <errno.h> |
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35 | #include <signal.h> |
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36 | #include <sys/file.h> |
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37 | #include <sys/stat.h> |
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38 | #ifdef NO_WAIT_H |
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39 | #include <sys/wait.h> |
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40 | #endif |
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41 | |
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42 | #define COLLECT |
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43 | |
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44 | #include "demangle.h" |
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45 | #include "obstack.h" |
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46 | |
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47 | #ifndef errno |
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48 | extern int errno; |
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49 | #endif |
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50 | |
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51 | #ifndef HAVE_STRERROR |
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52 | #if defined(bsd4_4) |
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53 | extern const char *const sys_errlist[]; |
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54 | #else |
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55 | extern char *sys_errlist[]; |
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56 | #endif |
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57 | extern int sys_nerr; |
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58 | #else |
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59 | char *strerror(); |
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60 | #endif |
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61 | |
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62 | /* Obstack allocation and deallocation routines. */ |
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63 | #define obstack_chunk_alloc xmalloc |
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64 | #define obstack_chunk_free free |
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65 | |
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66 | #if !defined (__STDC__) && !defined (const) |
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67 | #define const |
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68 | #endif |
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69 | |
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70 | #ifdef USG |
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71 | #define vfork fork |
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72 | #endif |
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73 | |
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74 | /* Add prototype support. */ |
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75 | #ifndef PROTO |
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76 | #if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__) |
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77 | #define PROTO(ARGS) ARGS |
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78 | #else |
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79 | #define PROTO(ARGS) () |
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80 | #endif |
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81 | #endif |
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82 | |
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83 | #ifndef R_OK |
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84 | #define R_OK 4 |
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85 | #define W_OK 2 |
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86 | #define X_OK 1 |
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87 | #endif |
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88 | |
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89 | #ifndef WIFSIGNALED |
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90 | #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f) |
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91 | #endif |
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92 | #ifndef WTERMSIG |
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93 | #define WTERMSIG(S) ((S) & 0x7f) |
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94 | #endif |
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95 | #ifndef WIFEXITED |
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96 | #define WIFEXITED(S) (((S) & 0xff) == 0) |
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97 | #endif |
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98 | #ifndef WEXITSTATUS |
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99 | #define WEXITSTATUS(S) (((S) & 0xff00) >> 8) |
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100 | #endif |
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101 | |
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102 | /* On MSDOS, write temp files in current dir |
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103 | because there's no place else we can expect to use. */ |
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104 | #ifdef __MSDOS__ |
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105 | #ifndef P_tmpdir |
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106 | #define P_tmpdir "./" |
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107 | #endif |
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108 | #endif |
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109 | |
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110 | /* On certain systems, we have code that works by scanning the object file |
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111 | directly. But this code uses system-specific header files and library |
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112 | functions, so turn it off in a cross-compiler. Likewise, the names of |
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113 | the utilities aren't correct for a cross-compiler; we have to hope that |
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114 | cross-versions are in the proper directories. */ |
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115 | |
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116 | #ifdef CROSS_COMPILE |
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117 | #undef SUNOS4_SHARED_LIBRARIES |
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118 | #undef OBJECT_FORMAT_COFF |
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119 | #undef OBJECT_FORMAT_ROSE |
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120 | #undef MD_EXEC_PREFIX |
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121 | #undef REAL_LD_FILE_NAME |
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122 | #undef REAL_NM_FILE_NAME |
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123 | #undef REAL_STRIP_FILE_NAME |
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124 | #endif |
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125 | |
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126 | /* If we can't use a special method, use the ordinary one: |
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127 | run nm to find what symbols are present. |
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128 | In a cross-compiler, this means you need a cross nm, |
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129 | but that isn't quite as unpleasant as special headers. */ |
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130 | |
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131 | #if !defined (OBJECT_FORMAT_COFF) && !defined (OBJECT_FORMAT_ROSE) |
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132 | #define OBJECT_FORMAT_NONE |
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133 | #endif |
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134 | |
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135 | #ifdef OBJECT_FORMAT_COFF |
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136 | |
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137 | #include <a.out.h> |
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138 | #include <ar.h> |
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139 | |
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140 | #ifdef UMAX |
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141 | #include <sgs.h> |
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142 | #endif |
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143 | |
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144 | /* Many versions of ldfcn.h define these. */ |
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145 | #ifdef FREAD |
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146 | #undef FREAD |
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147 | #undef FWRITE |
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148 | #endif |
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149 | |
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150 | #include <ldfcn.h> |
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151 | |
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152 | /* Some systems have an ISCOFF macro, but others do not. In some cases |
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153 | the macro may be wrong. MY_ISCOFF is defined in tm.h files for machines |
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154 | that either do not have an ISCOFF macro in /usr/include or for those |
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155 | where it is wrong. */ |
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156 | |
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157 | #ifndef MY_ISCOFF |
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158 | #define MY_ISCOFF(X) ISCOFF (X) |
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159 | #endif |
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160 | |
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161 | #ifdef XCOFF_DEBUGGING_INFO |
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162 | #define XCOFF_SCAN_LIBS |
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163 | #endif |
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164 | |
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165 | #endif /* OBJECT_FORMAT_COFF */ |
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166 | |
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167 | #ifdef OBJECT_FORMAT_ROSE |
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168 | |
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169 | #ifdef _OSF_SOURCE |
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170 | #define USE_MMAP |
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171 | #endif |
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172 | |
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173 | #ifdef USE_MMAP |
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174 | #include <sys/mman.h> |
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175 | #endif |
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176 | |
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177 | #include <unistd.h> |
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178 | #include <mach_o_format.h> |
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179 | #include <mach_o_header.h> |
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180 | #include <mach_o_vals.h> |
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181 | #include <mach_o_types.h> |
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182 | |
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183 | #endif /* OBJECT_FORMAT_ROSE */ |
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184 | |
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185 | #ifdef OBJECT_FORMAT_NONE |
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186 | |
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187 | /* Default flags to pass to nm. */ |
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188 | #ifndef NM_FLAGS |
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189 | #define NM_FLAGS "-p" |
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190 | #endif |
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191 | |
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192 | #endif /* OBJECT_FORMAT_NONE */ |
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193 | |
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194 | /* Some systems use __main in a way incompatible with its use in gcc, in these |
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195 | cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to |
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196 | give the same symbol without quotes for an alternative entry point. You |
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197 | must define both, or neither. */ |
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198 | #ifndef NAME__MAIN |
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199 | #define NAME__MAIN "__main" |
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200 | #define SYMBOL__MAIN __main |
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201 | #endif |
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202 | |
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203 | #if defined (LDD_SUFFIX) || SUNOS4_SHARED_LIBRARIES || defined(XCOFF_SCAN_LIBS) |
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204 | #define SCAN_LIBRARIES |
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205 | #endif |
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206 | |
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207 | #ifdef USE_COLLECT2 |
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208 | int do_collecting = 1; |
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209 | #else |
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210 | int do_collecting = 0; |
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211 | #endif |
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212 | |
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213 | /* Linked lists of constructor and destructor names. */ |
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214 | |
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215 | struct id |
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216 | { |
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217 | struct id *next; |
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218 | int sequence; |
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219 | char name[1]; |
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220 | }; |
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221 | |
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222 | struct head |
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223 | { |
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224 | struct id *first; |
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225 | struct id *last; |
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226 | int number; |
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227 | }; |
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228 | |
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229 | /* Enumeration giving which pass this is for scanning the program file. */ |
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230 | |
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231 | enum pass { |
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232 | PASS_FIRST, /* without constructors */ |
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233 | PASS_OBJ, /* individual objects */ |
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234 | PASS_LIB, /* looking for shared libraries */ |
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235 | PASS_SECOND /* with constructors linked in */ |
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236 | }; |
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237 | |
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238 | #ifndef NO_SYS_SIGLIST |
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239 | #ifndef DONT_DECLARE_SYS_SIGLIST |
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240 | extern char *sys_siglist[]; |
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241 | #endif |
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242 | #endif |
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243 | extern char *version_string; |
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244 | |
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245 | int vflag; /* true if -v */ |
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246 | static int rflag; /* true if -r */ |
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247 | static int strip_flag; /* true if -s */ |
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248 | |
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249 | int debug; /* true if -debug */ |
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250 | |
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251 | static int shared_obj; /* true if -shared */ |
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252 | |
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253 | static int temp_filename_length; /* Length of temp_filename */ |
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254 | static char *temp_filename; /* Base of temp filenames */ |
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255 | static char *c_file; /* <xxx>.c for constructor/destructor list. */ |
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256 | static char *o_file; /* <xxx>.o for constructor/destructor list. */ |
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257 | static char *export_file; /* <xxx>.x for AIX export list. */ |
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258 | char *ldout; /* File for ld errors. */ |
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259 | static char *output_file; /* Output file for ld. */ |
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260 | static char *nm_file_name; /* pathname of nm */ |
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261 | static char *ldd_file_name; /* pathname of ldd (or equivalent) */ |
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262 | static char *strip_file_name; /* pathname of strip */ |
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263 | char *c_file_name; /* pathname of gcc */ |
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264 | static char *initname, *fininame; /* names of init and fini funcs */ |
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265 | |
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266 | static struct head constructors; /* list of constructors found */ |
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267 | static struct head destructors; /* list of destructors found */ |
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268 | static struct head exports; /* list of exported symbols */ |
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269 | |
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270 | struct obstack temporary_obstack; |
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271 | struct obstack permanent_obstack; |
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272 | char * temporary_firstobj; |
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273 | |
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274 | /* Defined in the automatically-generated underscore.c. */ |
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275 | extern int prepends_underscore; |
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276 | |
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277 | extern char *getenv (); |
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278 | extern char *mktemp (); |
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279 | extern FILE *fdopen (); |
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280 | |
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281 | /* Structure to hold all the directories in which to search for files to |
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282 | execute. */ |
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283 | |
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284 | struct prefix_list |
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285 | { |
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286 | char *prefix; /* String to prepend to the path. */ |
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287 | struct prefix_list *next; /* Next in linked list. */ |
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288 | }; |
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289 | |
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290 | struct path_prefix |
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291 | { |
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292 | struct prefix_list *plist; /* List of prefixes to try */ |
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293 | int max_len; /* Max length of a prefix in PLIST */ |
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294 | char *name; /* Name of this list (used in config stuff) */ |
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295 | }; |
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296 | |
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297 | void collect_exit PROTO((int)); |
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298 | void collect_execute PROTO((char *, char **, char *)); |
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299 | void dump_file PROTO((char *)); |
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300 | static void handler PROTO((int)); |
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301 | static int is_ctor_dtor PROTO((char *)); |
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302 | static void choose_temp_base PROTO((void)); |
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303 | static int is_in_prefix_list PROTO((struct path_prefix *, char *, int)); |
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304 | static char *find_a_file PROTO((struct path_prefix *, char *)); |
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305 | static void add_prefix PROTO((struct path_prefix *, char *)); |
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306 | static void prefix_from_env PROTO((char *, struct path_prefix *)); |
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307 | static void prefix_from_string PROTO((char *, struct path_prefix *)); |
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308 | static void do_wait PROTO((char *)); |
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309 | static void fork_execute PROTO((char *, char **)); |
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310 | static void maybe_unlink PROTO((char *)); |
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311 | static void add_to_list PROTO((struct head *, char *)); |
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312 | static void write_list PROTO((FILE *, char *, struct id *)); |
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313 | static void write_list_with_asm PROTO((FILE *, char *, struct id *)); |
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314 | static void write_c_file PROTO((FILE *, char *)); |
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315 | static void write_export_file PROTO((FILE *)); |
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316 | static void scan_prog_file PROTO((char *, enum pass)); |
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317 | static void scan_libraries PROTO((char *)); |
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318 | |
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319 | char *xcalloc (); |
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320 | char *xmalloc (); |
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321 | |
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322 | extern char *index (); |
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323 | extern char *rindex (); |
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324 | extern void free (); |
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325 | |
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326 | #ifdef NO_DUP2 |
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327 | int |
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328 | dup2 (oldfd, newfd) |
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329 | int oldfd; |
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330 | int newfd; |
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331 | { |
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332 | int fdtmp[256]; |
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333 | int fdx = 0; |
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334 | int fd; |
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335 | |
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336 | if (oldfd == newfd) |
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337 | return oldfd; |
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338 | close (newfd); |
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339 | while ((fd = dup (oldfd)) != newfd && fd >= 0) /* good enough for low fd's */ |
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340 | fdtmp[fdx++] = fd; |
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341 | while (fdx > 0) |
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342 | close (fdtmp[--fdx]); |
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343 | |
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344 | return fd; |
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345 | } |
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346 | #endif |
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347 | |
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348 | char * |
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349 | my_strerror (e) |
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350 | int e; |
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351 | { |
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352 | |
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353 | #ifdef HAVE_STRERROR |
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354 | return strerror (e); |
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355 | |
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356 | #else |
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357 | |
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358 | static char buffer[30]; |
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359 | if (!e) |
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360 | return ""; |
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361 | |
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362 | if (e > 0 && e < sys_nerr) |
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363 | return sys_errlist[e]; |
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364 | |
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365 | sprintf (buffer, "Unknown error %d", e); |
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366 | return buffer; |
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367 | #endif |
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368 | } |
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369 | |
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370 | /* Delete tempfiles and exit function. */ |
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371 | |
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372 | void |
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373 | collect_exit (status) |
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374 | int status; |
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375 | { |
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376 | if (c_file != 0 && c_file[0]) |
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377 | maybe_unlink (c_file); |
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378 | |
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379 | if (o_file != 0 && o_file[0]) |
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380 | maybe_unlink (o_file); |
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381 | |
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382 | if (export_file != 0 && export_file[0]) |
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383 | maybe_unlink (export_file); |
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384 | |
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385 | if (ldout != 0 && ldout[0]) |
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386 | { |
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387 | dump_file (ldout); |
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388 | maybe_unlink (ldout); |
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389 | } |
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390 | |
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391 | if (status != 0 && output_file != 0 && output_file[0]) |
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392 | maybe_unlink (output_file); |
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393 | |
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394 | exit (status); |
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395 | } |
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396 | |
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397 | |
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398 | /* Die when sys call fails. */ |
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399 | |
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400 | void |
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401 | fatal_perror (string, arg1, arg2, arg3) |
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402 | char *string, *arg1, *arg2, *arg3; |
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403 | { |
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404 | int e = errno; |
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405 | |
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406 | fprintf (stderr, "collect2: "); |
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407 | fprintf (stderr, string, arg1, arg2, arg3); |
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408 | fprintf (stderr, ": %s\n", my_strerror (e)); |
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409 | collect_exit (1); |
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410 | } |
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411 | |
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412 | /* Just die. */ |
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413 | |
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414 | void |
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415 | fatal (string, arg1, arg2, arg3) |
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416 | char *string, *arg1, *arg2, *arg3; |
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417 | { |
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418 | fprintf (stderr, "collect2: "); |
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419 | fprintf (stderr, string, arg1, arg2, arg3); |
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420 | fprintf (stderr, "\n"); |
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421 | collect_exit (1); |
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422 | } |
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423 | |
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424 | /* Write error message. */ |
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425 | |
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426 | void |
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427 | error (string, arg1, arg2, arg3, arg4) |
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428 | char *string, *arg1, *arg2, *arg3, *arg4; |
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429 | { |
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430 | fprintf (stderr, "collect2: "); |
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431 | fprintf (stderr, string, arg1, arg2, arg3, arg4); |
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432 | fprintf (stderr, "\n"); |
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433 | } |
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434 | |
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435 | /* In case obstack is linked in, and abort is defined to fancy_abort, |
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436 | provide a default entry. */ |
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437 | |
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438 | void |
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439 | fancy_abort () |
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440 | { |
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441 | fatal ("internal error"); |
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442 | } |
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443 | |
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444 | |
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445 | static void |
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446 | handler (signo) |
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447 | int signo; |
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448 | { |
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449 | if (c_file != 0 && c_file[0]) |
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450 | maybe_unlink (c_file); |
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451 | |
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452 | if (o_file != 0 && o_file[0]) |
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453 | maybe_unlink (o_file); |
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454 | |
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455 | if (ldout != 0 && ldout[0]) |
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456 | maybe_unlink (ldout); |
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457 | |
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458 | signal (signo, SIG_DFL); |
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459 | kill (getpid (), signo); |
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460 | } |
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461 | |
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462 | |
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463 | char * |
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464 | xcalloc (size1, size2) |
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465 | int size1, size2; |
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466 | { |
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467 | char *ptr = (char *) calloc (size1, size2); |
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468 | if (ptr) |
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469 | return ptr; |
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470 | |
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471 | fatal ("out of memory"); |
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472 | return (char *)0; |
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473 | } |
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474 | |
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475 | char * |
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476 | xmalloc (size) |
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477 | unsigned size; |
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478 | { |
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479 | char *ptr = (char *) malloc (size); |
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480 | if (ptr) |
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481 | return ptr; |
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482 | |
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483 | fatal ("out of memory"); |
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484 | return (char *)0; |
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485 | } |
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486 | |
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487 | char * |
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488 | xrealloc (ptr, size) |
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489 | char *ptr; |
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490 | unsigned size; |
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491 | { |
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492 | register char *value = (char *) realloc (ptr, size); |
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493 | if (value == 0) |
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494 | fatal ("virtual memory exhausted"); |
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495 | return value; |
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496 | } |
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497 | |
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498 | int |
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499 | file_exists (name) |
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500 | char *name; |
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501 | { |
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502 | return access (name, R_OK) == 0; |
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503 | } |
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504 | |
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505 | /* Make a copy of a string INPUT with size SIZE. */ |
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506 | |
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507 | char * |
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508 | savestring (input, size) |
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509 | char *input; |
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510 | int size; |
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511 | { |
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512 | char *output = (char *) xmalloc (size + 1); |
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513 | bcopy (input, output, size); |
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514 | output[size] = 0; |
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515 | return output; |
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516 | } |
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517 | |
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518 | void |
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519 | dump_file (name) |
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520 | char *name; |
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521 | { |
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522 | FILE *stream = fopen (name, "r"); |
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523 | int no_demangle = !! getenv ("COLLECT_NO_DEMANGLE"); |
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524 | |
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525 | if (stream == 0) |
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526 | return; |
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527 | while (1) |
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528 | { |
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529 | int c; |
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530 | while (c = getc (stream), |
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531 | c != EOF && (isalnum (c) || c == '_' || c == '$' || c == '.')) |
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532 | obstack_1grow (&temporary_obstack, c); |
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533 | if (obstack_object_size (&temporary_obstack) > 0) |
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534 | { |
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535 | char *word, *p, *result; |
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536 | obstack_1grow (&temporary_obstack, '\0'); |
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537 | word = obstack_finish (&temporary_obstack); |
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538 | |
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539 | if (*word == '.') |
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540 | ++word, putc ('.', stderr); |
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541 | p = word; |
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542 | if (*p == '_' && prepends_underscore) |
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543 | ++p; |
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544 | |
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545 | if (no_demangle) |
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546 | result = 0; |
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547 | else |
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548 | result = cplus_demangle (p, DMGL_PARAMS | DMGL_ANSI); |
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549 | |
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550 | if (result) |
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551 | { |
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552 | int diff; |
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553 | fputs (result, stderr); |
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554 | |
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555 | diff = strlen (word) - strlen (result); |
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556 | while (diff > 0) |
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557 | --diff, putc (' ', stderr); |
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558 | while (diff < 0 && c == ' ') |
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559 | ++diff, c = getc (stream); |
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560 | |
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561 | free (result); |
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562 | } |
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563 | else |
---|
564 | fputs (word, stderr); |
---|
565 | |
---|
566 | fflush (stderr); |
---|
567 | obstack_free (&temporary_obstack, temporary_firstobj); |
---|
568 | } |
---|
569 | if (c == EOF) |
---|
570 | break; |
---|
571 | putc (c, stderr); |
---|
572 | } |
---|
573 | } |
---|
574 | |
---|
575 | /* Decide whether the given symbol is: |
---|
576 | a constructor (1), a destructor (2), or neither (0). */ |
---|
577 | |
---|
578 | static int |
---|
579 | is_ctor_dtor (s) |
---|
580 | char *s; |
---|
581 | { |
---|
582 | struct names { char *name; int len; int ret; int two_underscores; }; |
---|
583 | |
---|
584 | register struct names *p; |
---|
585 | register int ch; |
---|
586 | register char *orig_s = s; |
---|
587 | |
---|
588 | static struct names special[] = { |
---|
589 | #ifdef NO_DOLLAR_IN_LABEL |
---|
590 | #ifdef NO_DOT_IN_LABEL |
---|
591 | { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, 1, 0 }, |
---|
592 | { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, 2, 0 }, |
---|
593 | #else |
---|
594 | { "GLOBAL_.I.", sizeof ("GLOBAL_.I.")-1, 1, 0 }, |
---|
595 | { "GLOBAL_.D.", sizeof ("GLOBAL_.D.")-1, 2, 0 }, |
---|
596 | #endif |
---|
597 | #else |
---|
598 | { "GLOBAL_$I$", sizeof ("GLOBAL_$I$")-1, 1, 0 }, |
---|
599 | { "GLOBAL_$D$", sizeof ("GLOBAL_$D$")-1, 2, 0 }, |
---|
600 | #endif |
---|
601 | { "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, 3, 0 }, |
---|
602 | { "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, 4, 0 }, |
---|
603 | #ifdef CFRONT_LOSSAGE /* Don't collect cfront initialization functions. |
---|
604 | cfront has its own linker procedure to collect them; |
---|
605 | if collect2 gets them too, they get collected twice |
---|
606 | when the cfront procedure is run and the compiler used |
---|
607 | for linking happens to be GCC. */ |
---|
608 | { "sti__", sizeof ("sti__")-1, 1, 1 }, |
---|
609 | { "std__", sizeof ("std__")-1, 2, 1 }, |
---|
610 | #endif /* CFRONT_LOSSAGE */ |
---|
611 | { NULL, 0, 0, 0 } |
---|
612 | }; |
---|
613 | |
---|
614 | while ((ch = *s) == '_') |
---|
615 | ++s; |
---|
616 | |
---|
617 | if (s == orig_s) |
---|
618 | return 0; |
---|
619 | |
---|
620 | for (p = &special[0]; p->len > 0; p++) |
---|
621 | { |
---|
622 | if (ch == p->name[0] |
---|
623 | && (!p->two_underscores || ((s - orig_s) >= 2)) |
---|
624 | && strncmp(s, p->name, p->len) == 0) |
---|
625 | { |
---|
626 | return p->ret; |
---|
627 | } |
---|
628 | } |
---|
629 | return 0; |
---|
630 | } |
---|
631 | |
---|
632 | |
---|
633 | /* Compute a string to use as the base of all temporary file names. |
---|
634 | It is substituted for %g. */ |
---|
635 | |
---|
636 | static void |
---|
637 | choose_temp_base () |
---|
638 | { |
---|
639 | char *base = getenv ("TMPDIR"); |
---|
640 | int len; |
---|
641 | |
---|
642 | if (base == (char *)0) |
---|
643 | { |
---|
644 | #ifdef P_tmpdir |
---|
645 | if (access (P_tmpdir, R_OK | W_OK) == 0) |
---|
646 | base = P_tmpdir; |
---|
647 | #endif |
---|
648 | if (base == (char *)0) |
---|
649 | { |
---|
650 | if (access ("/usr/tmp", R_OK | W_OK) == 0) |
---|
651 | base = "/usr/tmp/"; |
---|
652 | else |
---|
653 | base = "/tmp/"; |
---|
654 | } |
---|
655 | } |
---|
656 | |
---|
657 | len = strlen (base); |
---|
658 | temp_filename = xmalloc (len + sizeof("/ccXXXXXX") + 1); |
---|
659 | strcpy (temp_filename, base); |
---|
660 | if (len > 0 && temp_filename[len-1] != '/') |
---|
661 | temp_filename[len++] = '/'; |
---|
662 | strcpy (temp_filename + len, "ccXXXXXX"); |
---|
663 | |
---|
664 | mktemp (temp_filename); |
---|
665 | temp_filename_length = strlen (temp_filename); |
---|
666 | } |
---|
667 | |
---|
668 | /* Routine to add variables to the environment. */ |
---|
669 | |
---|
670 | #ifndef HAVE_PUTENV |
---|
671 | |
---|
672 | int |
---|
673 | putenv (str) |
---|
674 | char *str; |
---|
675 | { |
---|
676 | #ifndef VMS /* nor about VMS */ |
---|
677 | |
---|
678 | extern char **environ; |
---|
679 | char **old_environ = environ; |
---|
680 | char **envp; |
---|
681 | int num_envs = 0; |
---|
682 | int name_len = 1; |
---|
683 | char *p = str; |
---|
684 | int ch; |
---|
685 | |
---|
686 | while ((ch = *p++) != '\0' && ch != '=') |
---|
687 | name_len++; |
---|
688 | |
---|
689 | if (!ch) |
---|
690 | abort (); |
---|
691 | |
---|
692 | /* Search for replacing an existing environment variable, and |
---|
693 | count the number of total environment variables. */ |
---|
694 | for (envp = old_environ; *envp; envp++) |
---|
695 | { |
---|
696 | num_envs++; |
---|
697 | if (!strncmp (str, *envp, name_len)) |
---|
698 | { |
---|
699 | *envp = str; |
---|
700 | return 0; |
---|
701 | } |
---|
702 | } |
---|
703 | |
---|
704 | /* Add a new environment variable */ |
---|
705 | environ = (char **) xmalloc (sizeof (char *) * (num_envs+2)); |
---|
706 | *environ = str; |
---|
707 | bcopy ((char *) old_environ, (char *) (environ + 1), |
---|
708 | sizeof (char *) * (num_envs+1)); |
---|
709 | |
---|
710 | return 0; |
---|
711 | #endif /* VMS */ |
---|
712 | } |
---|
713 | |
---|
714 | #endif /* HAVE_PUTENV */ |
---|
715 | |
---|
716 | /* By default, colon separates directories in a path. */ |
---|
717 | #ifndef PATH_SEPARATOR |
---|
718 | #define PATH_SEPARATOR ':' |
---|
719 | #endif |
---|
720 | |
---|
721 | /* We maintain two prefix lists: one from COMPILER_PATH environment variable |
---|
722 | and one from the PATH variable. */ |
---|
723 | |
---|
724 | static struct path_prefix cpath, path; |
---|
725 | |
---|
726 | #ifdef CROSS_COMPILE |
---|
727 | /* This is the name of the target machine. We use it to form the name |
---|
728 | of the files to execute. */ |
---|
729 | |
---|
730 | static char *target_machine = TARGET_MACHINE; |
---|
731 | #endif |
---|
732 | |
---|
733 | /* Names under which we were executed. Never return one of those files in our |
---|
734 | searches. */ |
---|
735 | |
---|
736 | static struct path_prefix our_file_names; |
---|
737 | |
---|
738 | /* Determine if STRING is in PPREFIX. |
---|
739 | |
---|
740 | This utility is currently only used to look up file names. Prefix lists |
---|
741 | record directory names. This matters to us because the latter has a |
---|
742 | trailing slash, so I've added a flag to handle both. */ |
---|
743 | |
---|
744 | static int |
---|
745 | is_in_prefix_list (pprefix, string, filep) |
---|
746 | struct path_prefix *pprefix; |
---|
747 | char *string; |
---|
748 | int filep; |
---|
749 | { |
---|
750 | struct prefix_list *pl; |
---|
751 | |
---|
752 | if (filep) |
---|
753 | { |
---|
754 | int len = strlen (string); |
---|
755 | |
---|
756 | for (pl = pprefix->plist; pl; pl = pl->next) |
---|
757 | { |
---|
758 | if (strncmp (pl->prefix, string, len) == 0 |
---|
759 | && strcmp (pl->prefix + len, "/") == 0) |
---|
760 | return 1; |
---|
761 | } |
---|
762 | } |
---|
763 | else |
---|
764 | { |
---|
765 | for (pl = pprefix->plist; pl; pl = pl->next) |
---|
766 | { |
---|
767 | if (strcmp (pl->prefix, string) == 0) |
---|
768 | return 1; |
---|
769 | } |
---|
770 | } |
---|
771 | |
---|
772 | return 0; |
---|
773 | } |
---|
774 | |
---|
775 | /* Search for NAME using prefix list PPREFIX. We only look for executable |
---|
776 | files. |
---|
777 | |
---|
778 | Return 0 if not found, otherwise return its name, allocated with malloc. */ |
---|
779 | |
---|
780 | static char * |
---|
781 | find_a_file (pprefix, name) |
---|
782 | struct path_prefix *pprefix; |
---|
783 | char *name; |
---|
784 | { |
---|
785 | char *temp; |
---|
786 | struct prefix_list *pl; |
---|
787 | int len = pprefix->max_len + strlen (name) + 1; |
---|
788 | |
---|
789 | #ifdef EXECUTABLE_SUFFIX |
---|
790 | len += strlen (EXECUTABLE_SUFFIX); |
---|
791 | #endif |
---|
792 | |
---|
793 | temp = xmalloc (len); |
---|
794 | |
---|
795 | /* Determine the filename to execute (special case for absolute paths). */ |
---|
796 | |
---|
797 | if (*name == '/') |
---|
798 | { |
---|
799 | if (access (name, X_OK) == 0) |
---|
800 | { |
---|
801 | strcpy (temp, name); |
---|
802 | return temp; |
---|
803 | } |
---|
804 | } |
---|
805 | else |
---|
806 | for (pl = pprefix->plist; pl; pl = pl->next) |
---|
807 | { |
---|
808 | strcpy (temp, pl->prefix); |
---|
809 | strcat (temp, name); |
---|
810 | if (! is_in_prefix_list (&our_file_names, temp, 1) |
---|
811 | /* This is a kludge, but there seems no way around it. */ |
---|
812 | && strcmp (temp, "./ld") != 0 |
---|
813 | && access (temp, X_OK) == 0) |
---|
814 | return temp; |
---|
815 | |
---|
816 | #ifdef EXECUTABLE_SUFFIX |
---|
817 | /* Some systems have a suffix for executable files. |
---|
818 | So try appending that. */ |
---|
819 | strcat (temp, EXECUTABLE_SUFFIX); |
---|
820 | if (! is_in_prefix_list (&our_file_names, temp, 1) |
---|
821 | && access (temp, X_OK) == 0) |
---|
822 | return temp; |
---|
823 | #endif |
---|
824 | } |
---|
825 | |
---|
826 | free (temp); |
---|
827 | return 0; |
---|
828 | } |
---|
829 | |
---|
830 | /* Add an entry for PREFIX to prefix list PPREFIX. */ |
---|
831 | |
---|
832 | static void |
---|
833 | add_prefix (pprefix, prefix) |
---|
834 | struct path_prefix *pprefix; |
---|
835 | char *prefix; |
---|
836 | { |
---|
837 | struct prefix_list *pl, **prev; |
---|
838 | int len; |
---|
839 | |
---|
840 | if (pprefix->plist) |
---|
841 | { |
---|
842 | for (pl = pprefix->plist; pl->next; pl = pl->next) |
---|
843 | ; |
---|
844 | prev = &pl->next; |
---|
845 | } |
---|
846 | else |
---|
847 | prev = &pprefix->plist; |
---|
848 | |
---|
849 | /* Keep track of the longest prefix */ |
---|
850 | |
---|
851 | len = strlen (prefix); |
---|
852 | if (len > pprefix->max_len) |
---|
853 | pprefix->max_len = len; |
---|
854 | |
---|
855 | pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list)); |
---|
856 | pl->prefix = savestring (prefix, len); |
---|
857 | |
---|
858 | if (*prev) |
---|
859 | pl->next = *prev; |
---|
860 | else |
---|
861 | pl->next = (struct prefix_list *) 0; |
---|
862 | *prev = pl; |
---|
863 | } |
---|
864 | |
---|
865 | /* Take the value of the environment variable ENV, break it into a path, and |
---|
866 | add of the entries to PPREFIX. */ |
---|
867 | |
---|
868 | static void |
---|
869 | prefix_from_env (env, pprefix) |
---|
870 | char *env; |
---|
871 | struct path_prefix *pprefix; |
---|
872 | { |
---|
873 | char *p = getenv (env); |
---|
874 | |
---|
875 | if (p) |
---|
876 | prefix_from_string (p, pprefix); |
---|
877 | } |
---|
878 | |
---|
879 | static void |
---|
880 | prefix_from_string (p, pprefix) |
---|
881 | char *p; |
---|
882 | struct path_prefix *pprefix; |
---|
883 | { |
---|
884 | char *startp, *endp; |
---|
885 | char *nstore = (char *) xmalloc (strlen (p) + 3); |
---|
886 | |
---|
887 | startp = endp = p; |
---|
888 | while (1) |
---|
889 | { |
---|
890 | if (*endp == PATH_SEPARATOR || *endp == 0) |
---|
891 | { |
---|
892 | strncpy (nstore, startp, endp-startp); |
---|
893 | if (endp == startp) |
---|
894 | { |
---|
895 | strcpy (nstore, "./"); |
---|
896 | } |
---|
897 | else if (endp[-1] != '/') |
---|
898 | { |
---|
899 | nstore[endp-startp] = '/'; |
---|
900 | nstore[endp-startp+1] = 0; |
---|
901 | } |
---|
902 | else |
---|
903 | nstore[endp-startp] = 0; |
---|
904 | |
---|
905 | add_prefix (pprefix, nstore); |
---|
906 | if (*endp == 0) |
---|
907 | break; |
---|
908 | endp = startp = endp + 1; |
---|
909 | } |
---|
910 | else |
---|
911 | endp++; |
---|
912 | } |
---|
913 | } |
---|
914 | |
---|
915 | /* Main program. */ |
---|
916 | |
---|
917 | int |
---|
918 | main (argc, argv) |
---|
919 | int argc; |
---|
920 | char *argv[]; |
---|
921 | { |
---|
922 | char *ld_suffix = "ld"; |
---|
923 | char *full_ld_suffix = ld_suffix; |
---|
924 | char *real_ld_suffix = "real-ld"; |
---|
925 | char *full_real_ld_suffix = real_ld_suffix; |
---|
926 | char *collect_ld_suffix = "collect-ld"; |
---|
927 | char *nm_suffix = "nm"; |
---|
928 | char *full_nm_suffix = nm_suffix; |
---|
929 | char *gnm_suffix = "gnm"; |
---|
930 | char *full_gnm_suffix = gnm_suffix; |
---|
931 | #ifdef LDD_SUFFIX |
---|
932 | char *ldd_suffix = LDD_SUFFIX; |
---|
933 | char *full_ldd_suffix = ldd_suffix; |
---|
934 | #endif |
---|
935 | char *strip_suffix = "strip"; |
---|
936 | char *full_strip_suffix = strip_suffix; |
---|
937 | char *gstrip_suffix = "gstrip"; |
---|
938 | char *full_gstrip_suffix = gstrip_suffix; |
---|
939 | char *arg; |
---|
940 | FILE *outf, *exportf; |
---|
941 | char *ld_file_name; |
---|
942 | char *collect_name; |
---|
943 | char *collect_names; |
---|
944 | char *p; |
---|
945 | char **c_argv; |
---|
946 | char **c_ptr; |
---|
947 | char **ld1_argv = (char **) xcalloc (sizeof (char *), argc+3); |
---|
948 | char **ld1 = ld1_argv; |
---|
949 | char **ld2_argv = (char **) xcalloc (sizeof (char *), argc+6); |
---|
950 | char **ld2 = ld2_argv; |
---|
951 | char **object_lst = (char **) xcalloc (sizeof (char *), argc); |
---|
952 | char **object = object_lst; |
---|
953 | int first_file; |
---|
954 | int num_c_args = argc+7; |
---|
955 | |
---|
956 | #ifdef DEBUG |
---|
957 | debug = 1; |
---|
958 | vflag = 1; |
---|
959 | #endif |
---|
960 | |
---|
961 | output_file = "a.out"; |
---|
962 | |
---|
963 | obstack_begin (&temporary_obstack, 0); |
---|
964 | obstack_begin (&permanent_obstack, 0); |
---|
965 | temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0); |
---|
966 | current_demangling_style = gnu_demangling; |
---|
967 | |
---|
968 | /* We must check that we do not call ourselves in an infinite |
---|
969 | recursion loop. We append the name used for us to the COLLECT_NAMES |
---|
970 | environment variable. |
---|
971 | |
---|
972 | In practice, collect will rarely invoke itself. This can happen now |
---|
973 | that we are no longer called gld. A perfect example is when running |
---|
974 | gcc in a build directory that has been installed. When looking for |
---|
975 | ld's, we'll find our installed version and believe that's the real ld. */ |
---|
976 | |
---|
977 | /* We must also append COLLECT_NAME to COLLECT_NAMES to watch for the |
---|
978 | previous version of collect (the one that used COLLECT_NAME and only |
---|
979 | handled two levels of recursion). If we don't we may mutually recurse |
---|
980 | forever. This can happen (I think) when bootstrapping the old version |
---|
981 | and a new one is installed (rare, but we should handle it). |
---|
982 | ??? Hopefully references to COLLECT_NAME can be removed at some point. */ |
---|
983 | |
---|
984 | collect_name = (char *) getenv ("COLLECT_NAME"); |
---|
985 | collect_names = (char *) getenv ("COLLECT_NAMES"); |
---|
986 | |
---|
987 | p = (char *) xmalloc (strlen ("COLLECT_NAMES=") |
---|
988 | + (collect_name ? strlen (collect_name) + 1 : 0) |
---|
989 | + (collect_names ? strlen (collect_names) + 1 : 0) |
---|
990 | + strlen (argv[0]) + 1); |
---|
991 | strcpy (p, "COLLECT_NAMES="); |
---|
992 | if (collect_name != 0) |
---|
993 | sprintf (p + strlen (p), "%s%c", collect_name, PATH_SEPARATOR); |
---|
994 | if (collect_names != 0) |
---|
995 | sprintf (p + strlen (p), "%s%c", collect_names, PATH_SEPARATOR); |
---|
996 | strcat (p, argv[0]); |
---|
997 | putenv (p); |
---|
998 | |
---|
999 | prefix_from_env ("COLLECT_NAMES", &our_file_names); |
---|
1000 | |
---|
1001 | /* Set environment variable COLLECT_NAME to our name so the previous version |
---|
1002 | of collect won't find us. If it does we'll mutually recurse forever. |
---|
1003 | This can happen when bootstrapping the new version and an old version is |
---|
1004 | installed. |
---|
1005 | ??? Hopefully this bit of code can be removed at some point. */ |
---|
1006 | |
---|
1007 | p = xmalloc (strlen ("COLLECT_NAME=") + strlen (argv[0]) + 1); |
---|
1008 | sprintf (p, "COLLECT_NAME=%s", argv[0]); |
---|
1009 | putenv (p); |
---|
1010 | |
---|
1011 | p = (char *) getenv ("COLLECT_GCC_OPTIONS"); |
---|
1012 | if (p) |
---|
1013 | while (*p) |
---|
1014 | { |
---|
1015 | char *q = p; |
---|
1016 | while (*q && *q != ' ') q++; |
---|
1017 | if (*p == '-' && p[1] == 'm') |
---|
1018 | num_c_args++; |
---|
1019 | |
---|
1020 | if (*q) q++; |
---|
1021 | p = q; |
---|
1022 | } |
---|
1023 | |
---|
1024 | c_ptr = c_argv = (char **) xcalloc (sizeof (char *), num_c_args); |
---|
1025 | |
---|
1026 | if (argc < 2) |
---|
1027 | fatal ("no arguments"); |
---|
1028 | |
---|
1029 | #ifdef SIGQUIT |
---|
1030 | if (signal (SIGQUIT, SIG_IGN) != SIG_IGN) |
---|
1031 | signal (SIGQUIT, handler); |
---|
1032 | #endif |
---|
1033 | if (signal (SIGINT, SIG_IGN) != SIG_IGN) |
---|
1034 | signal (SIGINT, handler); |
---|
1035 | #ifdef SIGALRM |
---|
1036 | if (signal (SIGALRM, SIG_IGN) != SIG_IGN) |
---|
1037 | signal (SIGALRM, handler); |
---|
1038 | #endif |
---|
1039 | #ifdef SIGHUP |
---|
1040 | if (signal (SIGHUP, SIG_IGN) != SIG_IGN) |
---|
1041 | signal (SIGHUP, handler); |
---|
1042 | #endif |
---|
1043 | if (signal (SIGSEGV, SIG_IGN) != SIG_IGN) |
---|
1044 | signal (SIGSEGV, handler); |
---|
1045 | #ifdef SIGBUS |
---|
1046 | if (signal (SIGBUS, SIG_IGN) != SIG_IGN) |
---|
1047 | signal (SIGBUS, handler); |
---|
1048 | #endif |
---|
1049 | |
---|
1050 | /* Extract COMPILER_PATH and PATH into our prefix list. */ |
---|
1051 | prefix_from_env ("COMPILER_PATH", &cpath); |
---|
1052 | prefix_from_env ("PATH", &path); |
---|
1053 | |
---|
1054 | #ifdef CROSS_COMPILE |
---|
1055 | /* If we look for a program in the compiler directories, we just use |
---|
1056 | the short name, since these directories are already system-specific. |
---|
1057 | But it we look for a took in the system directories, we need to |
---|
1058 | qualify the program name with the target machine. */ |
---|
1059 | |
---|
1060 | full_ld_suffix |
---|
1061 | = xcalloc (strlen (ld_suffix) + strlen (target_machine) + 2, 1); |
---|
1062 | strcpy (full_ld_suffix, target_machine); |
---|
1063 | strcat (full_ld_suffix, "-"); |
---|
1064 | strcat (full_ld_suffix, ld_suffix); |
---|
1065 | |
---|
1066 | full_real_ld_suffix |
---|
1067 | = xcalloc (strlen (real_ld_suffix) + strlen (target_machine) + 2, 1); |
---|
1068 | strcpy (full_real_ld_suffix, target_machine); |
---|
1069 | strcat (full_real_ld_suffix, "-"); |
---|
1070 | strcat (full_real_ld_suffix, real_ld_suffix); |
---|
1071 | |
---|
1072 | #if 0 |
---|
1073 | full_gld_suffix |
---|
1074 | = xcalloc (strlen (gld_suffix) + strlen (target_machine) + 2, 1); |
---|
1075 | strcpy (full_gld_suffix, target_machine); |
---|
1076 | strcat (full_gld_suffix, "-"); |
---|
1077 | strcat (full_gld_suffix, gld_suffix); |
---|
1078 | #endif |
---|
1079 | |
---|
1080 | full_nm_suffix |
---|
1081 | = xcalloc (strlen (nm_suffix) + strlen (target_machine) + 2, 1); |
---|
1082 | strcpy (full_nm_suffix, target_machine); |
---|
1083 | strcat (full_nm_suffix, "-"); |
---|
1084 | strcat (full_nm_suffix, nm_suffix); |
---|
1085 | |
---|
1086 | full_gnm_suffix |
---|
1087 | = xcalloc (strlen (gnm_suffix) + strlen (target_machine) + 2, 1); |
---|
1088 | strcpy (full_gnm_suffix, target_machine); |
---|
1089 | strcat (full_gnm_suffix, "-"); |
---|
1090 | strcat (full_gnm_suffix, gnm_suffix); |
---|
1091 | |
---|
1092 | #ifdef LDD_SUFFIX |
---|
1093 | full_ldd_suffix |
---|
1094 | = xcalloc (strlen (ldd_suffix) + strlen (target_machine) + 2, 1); |
---|
1095 | strcpy (full_ldd_suffix, target_machine); |
---|
1096 | strcat (full_ldd_suffix, "-"); |
---|
1097 | strcat (full_ldd_suffix, ldd_suffix); |
---|
1098 | #endif |
---|
1099 | |
---|
1100 | full_strip_suffix |
---|
1101 | = xcalloc (strlen (strip_suffix) + strlen (target_machine) + 2, 1); |
---|
1102 | strcpy (full_strip_suffix, target_machine); |
---|
1103 | strcat (full_strip_suffix, "-"); |
---|
1104 | strcat (full_strip_suffix, strip_suffix); |
---|
1105 | |
---|
1106 | full_gstrip_suffix |
---|
1107 | = xcalloc (strlen (gstrip_suffix) + strlen (target_machine) + 2, 1); |
---|
1108 | strcpy (full_gstrip_suffix, target_machine); |
---|
1109 | strcat (full_gstrip_suffix, "-"); |
---|
1110 | strcat (full_gstrip_suffix, gstrip_suffix); |
---|
1111 | #endif /* CROSS_COMPILE */ |
---|
1112 | |
---|
1113 | /* Try to discover a valid linker/nm/strip to use. */ |
---|
1114 | |
---|
1115 | /* Maybe we know the right file to use (if not cross). */ |
---|
1116 | #ifdef REAL_LD_FILE_NAME |
---|
1117 | ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME); |
---|
1118 | if (ld_file_name == 0) |
---|
1119 | #endif |
---|
1120 | /* Search the (target-specific) compiler dirs for ld'. */ |
---|
1121 | ld_file_name = find_a_file (&cpath, real_ld_suffix); |
---|
1122 | /* Likewise for `collect-ld'. */ |
---|
1123 | if (ld_file_name == 0) |
---|
1124 | ld_file_name = find_a_file (&cpath, collect_ld_suffix); |
---|
1125 | /* Search the compiler directories for `ld'. We have protection against |
---|
1126 | recursive calls in find_a_file. */ |
---|
1127 | if (ld_file_name == 0) |
---|
1128 | ld_file_name = find_a_file (&cpath, ld_suffix); |
---|
1129 | /* Search the ordinary system bin directories |
---|
1130 | for `ld' (if native linking) or `TARGET-ld' (if cross). */ |
---|
1131 | if (ld_file_name == 0) |
---|
1132 | ld_file_name = find_a_file (&path, full_ld_suffix); |
---|
1133 | |
---|
1134 | /* If we've invoked ourselves, try again with LD_FILE_NAME. */ |
---|
1135 | |
---|
1136 | if (collect_names != 0) |
---|
1137 | { |
---|
1138 | if (ld_file_name != 0) |
---|
1139 | { |
---|
1140 | argv[0] = ld_file_name; |
---|
1141 | execvp (argv[0], argv); |
---|
1142 | } |
---|
1143 | fatal ("cannot find `ld'"); |
---|
1144 | } |
---|
1145 | |
---|
1146 | #ifdef REAL_NM_FILE_NAME |
---|
1147 | nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME); |
---|
1148 | if (nm_file_name == 0) |
---|
1149 | #endif |
---|
1150 | nm_file_name = find_a_file (&cpath, gnm_suffix); |
---|
1151 | if (nm_file_name == 0) |
---|
1152 | nm_file_name = find_a_file (&path, full_gnm_suffix); |
---|
1153 | if (nm_file_name == 0) |
---|
1154 | nm_file_name = find_a_file (&cpath, nm_suffix); |
---|
1155 | if (nm_file_name == 0) |
---|
1156 | nm_file_name = find_a_file (&path, full_nm_suffix); |
---|
1157 | |
---|
1158 | #ifdef LDD_SUFFIX |
---|
1159 | ldd_file_name = find_a_file (&cpath, ldd_suffix); |
---|
1160 | if (ldd_file_name == 0) |
---|
1161 | ldd_file_name = find_a_file (&path, full_ldd_suffix); |
---|
1162 | #endif |
---|
1163 | |
---|
1164 | #ifdef REAL_STRIP_FILE_NAME |
---|
1165 | strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME); |
---|
1166 | if (strip_file_name == 0) |
---|
1167 | #endif |
---|
1168 | strip_file_name = find_a_file (&cpath, gstrip_suffix); |
---|
1169 | if (strip_file_name == 0) |
---|
1170 | strip_file_name = find_a_file (&path, full_gstrip_suffix); |
---|
1171 | if (strip_file_name == 0) |
---|
1172 | strip_file_name = find_a_file (&cpath, strip_suffix); |
---|
1173 | if (strip_file_name == 0) |
---|
1174 | strip_file_name = find_a_file (&path, full_strip_suffix); |
---|
1175 | |
---|
1176 | /* Determine the full path name of the C compiler to use. */ |
---|
1177 | c_file_name = getenv ("COLLECT_GCC"); |
---|
1178 | if (c_file_name == 0) |
---|
1179 | { |
---|
1180 | #ifdef CROSS_COMPILE |
---|
1181 | c_file_name = xcalloc (sizeof ("gcc-") + strlen (target_machine) + 1, 1); |
---|
1182 | strcpy (c_file_name, target_machine); |
---|
1183 | strcat (c_file_name, "-gcc"); |
---|
1184 | #else |
---|
1185 | c_file_name = "gcc"; |
---|
1186 | #endif |
---|
1187 | } |
---|
1188 | |
---|
1189 | p = find_a_file (&cpath, c_file_name); |
---|
1190 | |
---|
1191 | /* Here it should be safe to use the system search path since we should have |
---|
1192 | already qualified the name of the compiler when it is needed. */ |
---|
1193 | if (p == 0) |
---|
1194 | p = find_a_file (&path, c_file_name); |
---|
1195 | |
---|
1196 | if (p) |
---|
1197 | c_file_name = p; |
---|
1198 | |
---|
1199 | *ld1++ = *ld2++ = ld_file_name; |
---|
1200 | |
---|
1201 | /* Make temp file names. */ |
---|
1202 | choose_temp_base (); |
---|
1203 | c_file = xcalloc (temp_filename_length + sizeof (".c"), 1); |
---|
1204 | o_file = xcalloc (temp_filename_length + sizeof (".o"), 1); |
---|
1205 | export_file = xmalloc (temp_filename_length + sizeof (".x")); |
---|
1206 | ldout = xmalloc (temp_filename_length + sizeof (".ld")); |
---|
1207 | sprintf (ldout, "%s.ld", temp_filename); |
---|
1208 | sprintf (c_file, "%s.c", temp_filename); |
---|
1209 | sprintf (o_file, "%s.o", temp_filename); |
---|
1210 | sprintf (export_file, "%s.x", temp_filename); |
---|
1211 | *c_ptr++ = c_file_name; |
---|
1212 | *c_ptr++ = "-c"; |
---|
1213 | *c_ptr++ = "-o"; |
---|
1214 | *c_ptr++ = o_file; |
---|
1215 | |
---|
1216 | /* !!! When GCC calls collect2, |
---|
1217 | it does not know whether it is calling collect2 or ld. |
---|
1218 | So collect2 cannot meaningfully understand any options |
---|
1219 | except those ld understands. |
---|
1220 | If you propose to make GCC pass some other option, |
---|
1221 | just imagine what will happen if ld is really ld!!! */ |
---|
1222 | |
---|
1223 | /* Parse arguments. Remember output file spec, pass the rest to ld. */ |
---|
1224 | /* After the first file, put in the c++ rt0. */ |
---|
1225 | |
---|
1226 | first_file = 1; |
---|
1227 | while ((arg = *++argv) != (char *)0) |
---|
1228 | { |
---|
1229 | *ld1++ = *ld2++ = arg; |
---|
1230 | |
---|
1231 | if (arg[0] == '-') |
---|
1232 | { |
---|
1233 | switch (arg[1]) |
---|
1234 | { |
---|
1235 | case 'd': |
---|
1236 | if (!strcmp (arg, "-debug")) |
---|
1237 | { |
---|
1238 | debug = 1; |
---|
1239 | vflag = 1; |
---|
1240 | ld1--; |
---|
1241 | ld2--; |
---|
1242 | } |
---|
1243 | break; |
---|
1244 | |
---|
1245 | case 'l': |
---|
1246 | if (first_file) |
---|
1247 | { |
---|
1248 | /* place o_file BEFORE this argument! */ |
---|
1249 | first_file = 0; |
---|
1250 | ld2--; |
---|
1251 | *ld2++ = o_file; |
---|
1252 | *ld2++ = arg; |
---|
1253 | } |
---|
1254 | break; |
---|
1255 | |
---|
1256 | case 'o': |
---|
1257 | if (arg[2] == '\0') |
---|
1258 | output_file = *ld1++ = *ld2++ = *++argv; |
---|
1259 | else |
---|
1260 | output_file = &arg[2]; |
---|
1261 | break; |
---|
1262 | |
---|
1263 | case 'r': |
---|
1264 | if (arg[2] == '\0') |
---|
1265 | rflag = 1; |
---|
1266 | break; |
---|
1267 | |
---|
1268 | case 's': |
---|
1269 | if (arg[2] == '\0' && do_collecting) |
---|
1270 | { |
---|
1271 | /* We must strip after the nm run, otherwise C++ linking |
---|
1272 | won't work. Thus we strip in the second ld run, or |
---|
1273 | else with strip if there is no second ld run. */ |
---|
1274 | strip_flag = 1; |
---|
1275 | ld1--; |
---|
1276 | } |
---|
1277 | break; |
---|
1278 | |
---|
1279 | case 'v': |
---|
1280 | if (arg[2] == '\0') |
---|
1281 | vflag = 1; |
---|
1282 | break; |
---|
1283 | } |
---|
1284 | } |
---|
1285 | else if ((p = rindex (arg, '.')) != (char *)0 |
---|
1286 | && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0)) |
---|
1287 | { |
---|
1288 | if (first_file) |
---|
1289 | { |
---|
1290 | first_file = 0; |
---|
1291 | if (p[1] == 'o') |
---|
1292 | *ld2++ = o_file; |
---|
1293 | else |
---|
1294 | { |
---|
1295 | /* place o_file BEFORE this argument! */ |
---|
1296 | ld2--; |
---|
1297 | *ld2++ = o_file; |
---|
1298 | *ld2++ = arg; |
---|
1299 | } |
---|
1300 | } |
---|
1301 | if (p[1] == 'o') |
---|
1302 | *object++ = arg; |
---|
1303 | } |
---|
1304 | } |
---|
1305 | |
---|
1306 | /* Get any options that the upper GCC wants to pass to the sub-GCC. */ |
---|
1307 | p = (char *) getenv ("COLLECT_GCC_OPTIONS"); |
---|
1308 | if (p) |
---|
1309 | while (*p) |
---|
1310 | { |
---|
1311 | char *q = p; |
---|
1312 | while (*q && *q != ' ') q++; |
---|
1313 | if (*p == '-' && (p[1] == 'm' || p[1] == 'f')) |
---|
1314 | *c_ptr++ = savestring (p, q - p); |
---|
1315 | if (strncmp (p, "-shared", sizeof ("shared") - 1) == 0) |
---|
1316 | shared_obj = 1; |
---|
1317 | |
---|
1318 | if (*q) q++; |
---|
1319 | p = q; |
---|
1320 | } |
---|
1321 | |
---|
1322 | #ifdef COLLECT_EXPORT_LIST |
---|
1323 | /* The AIX linker will discard static constructors in object files if |
---|
1324 | nothing else in the file is referenced, so look at them first. */ |
---|
1325 | while (object_lst < object) |
---|
1326 | scan_prog_file (*object_lst++, PASS_OBJ); |
---|
1327 | |
---|
1328 | { |
---|
1329 | char *buf = alloca (strlen (export_file) + 5); |
---|
1330 | sprintf (buf, "-bE:%s", export_file); |
---|
1331 | *ld1++ = buf; |
---|
1332 | *ld2++ = buf; |
---|
1333 | exportf = fopen (export_file, "w"); |
---|
1334 | if (exportf == (FILE *)0) |
---|
1335 | fatal_perror ("%s", export_file); |
---|
1336 | write_export_file (exportf); |
---|
1337 | if (fclose (exportf)) |
---|
1338 | fatal_perror ("closing %s", export_file); |
---|
1339 | } |
---|
1340 | #endif |
---|
1341 | |
---|
1342 | *c_ptr++ = c_file; |
---|
1343 | *object = *c_ptr = *ld1 = (char *)0; |
---|
1344 | |
---|
1345 | if (vflag) |
---|
1346 | { |
---|
1347 | fprintf (stderr, "collect2 version %s", version_string); |
---|
1348 | #ifdef TARGET_VERSION |
---|
1349 | TARGET_VERSION; |
---|
1350 | #endif |
---|
1351 | fprintf (stderr, "\n"); |
---|
1352 | } |
---|
1353 | |
---|
1354 | if (debug) |
---|
1355 | { |
---|
1356 | char *ptr; |
---|
1357 | fprintf (stderr, "ld_file_name = %s\n", |
---|
1358 | (ld_file_name ? ld_file_name : "not found")); |
---|
1359 | fprintf (stderr, "c_file_name = %s\n", |
---|
1360 | (c_file_name ? c_file_name : "not found")); |
---|
1361 | fprintf (stderr, "nm_file_name = %s\n", |
---|
1362 | (nm_file_name ? nm_file_name : "not found")); |
---|
1363 | #ifdef LDD_SUFFIX |
---|
1364 | fprintf (stderr, "ldd_file_name = %s\n", |
---|
1365 | (ldd_file_name ? ldd_file_name : "not found")); |
---|
1366 | #endif |
---|
1367 | fprintf (stderr, "strip_file_name = %s\n", |
---|
1368 | (strip_file_name ? strip_file_name : "not found")); |
---|
1369 | fprintf (stderr, "c_file = %s\n", |
---|
1370 | (c_file ? c_file : "not found")); |
---|
1371 | fprintf (stderr, "o_file = %s\n", |
---|
1372 | (o_file ? o_file : "not found")); |
---|
1373 | |
---|
1374 | ptr = getenv ("COLLECT_NAMES"); |
---|
1375 | if (ptr) |
---|
1376 | fprintf (stderr, "COLLECT_NAMES = %s\n", ptr); |
---|
1377 | |
---|
1378 | ptr = getenv ("COLLECT_GCC_OPTIONS"); |
---|
1379 | if (ptr) |
---|
1380 | fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr); |
---|
1381 | |
---|
1382 | ptr = getenv ("COLLECT_GCC"); |
---|
1383 | if (ptr) |
---|
1384 | fprintf (stderr, "COLLECT_GCC = %s\n", ptr); |
---|
1385 | |
---|
1386 | ptr = getenv ("COMPILER_PATH"); |
---|
1387 | if (ptr) |
---|
1388 | fprintf (stderr, "COMPILER_PATH = %s\n", ptr); |
---|
1389 | |
---|
1390 | ptr = getenv ("LIBRARY_PATH"); |
---|
1391 | if (ptr) |
---|
1392 | fprintf (stderr, "LIBRARY_PATH = %s\n", ptr); |
---|
1393 | |
---|
1394 | fprintf (stderr, "\n"); |
---|
1395 | } |
---|
1396 | |
---|
1397 | /* Load the program, searching all libraries. */ |
---|
1398 | |
---|
1399 | collect_execute ("ld", ld1_argv, ldout); |
---|
1400 | do_wait ("ld"); |
---|
1401 | dump_file (ldout); |
---|
1402 | unlink (ldout); |
---|
1403 | |
---|
1404 | /* If -r or they'll be run via some other method, don't build the |
---|
1405 | constructor or destructor list, just return now. */ |
---|
1406 | if (rflag || ! do_collecting) |
---|
1407 | return 0; |
---|
1408 | |
---|
1409 | /* Examine the namelist with nm and search it for static constructors |
---|
1410 | and destructors to call. |
---|
1411 | Write the constructor and destructor tables to a .s file and reload. */ |
---|
1412 | |
---|
1413 | scan_prog_file (output_file, PASS_FIRST); |
---|
1414 | |
---|
1415 | #ifdef SCAN_LIBRARIES |
---|
1416 | scan_libraries (output_file); |
---|
1417 | #endif |
---|
1418 | |
---|
1419 | if (debug) |
---|
1420 | { |
---|
1421 | fprintf (stderr, "%d constructor(s) found\n", constructors.number); |
---|
1422 | fprintf (stderr, "%d destructor(s) found\n", destructors.number); |
---|
1423 | } |
---|
1424 | |
---|
1425 | if (constructors.number == 0 && destructors.number == 0 |
---|
1426 | #ifdef LDD_SUFFIX |
---|
1427 | /* If we will be running these functions ourselves, we want to emit |
---|
1428 | stubs into the shared library so that we don't have to relink |
---|
1429 | dependent programs when we add static objects. */ |
---|
1430 | && ! shared_obj |
---|
1431 | #endif |
---|
1432 | ) |
---|
1433 | { |
---|
1434 | /* Strip now if it was requested on the command line. */ |
---|
1435 | if (strip_flag) |
---|
1436 | { |
---|
1437 | char **strip_argv = (char **) xcalloc (sizeof (char *), 3); |
---|
1438 | strip_argv[0] = strip_file_name; |
---|
1439 | strip_argv[1] = output_file; |
---|
1440 | strip_argv[2] = (char *) 0; |
---|
1441 | fork_execute ("strip", strip_argv); |
---|
1442 | } |
---|
1443 | |
---|
1444 | #ifdef COLLECT_EXPORT_LIST |
---|
1445 | maybe_unlink (export_file); |
---|
1446 | #endif |
---|
1447 | return 0; |
---|
1448 | } |
---|
1449 | |
---|
1450 | maybe_unlink(output_file); |
---|
1451 | outf = fopen (c_file, "w"); |
---|
1452 | if (outf == (FILE *)0) |
---|
1453 | fatal_perror ("%s", c_file); |
---|
1454 | |
---|
1455 | write_c_file (outf, c_file); |
---|
1456 | |
---|
1457 | if (fclose (outf)) |
---|
1458 | fatal_perror ("closing %s", c_file); |
---|
1459 | |
---|
1460 | /* Tell the linker that we have initializer and finalizer functions. */ |
---|
1461 | #ifdef LD_INIT_SWITCH |
---|
1462 | *ld2++ = LD_INIT_SWITCH; |
---|
1463 | *ld2++ = initname; |
---|
1464 | *ld2++ = LD_FINI_SWITCH; |
---|
1465 | *ld2++ = fininame; |
---|
1466 | #endif |
---|
1467 | *ld2 = (char*)0; |
---|
1468 | |
---|
1469 | #ifdef COLLECT_EXPORT_LIST |
---|
1470 | if (shared_obj) |
---|
1471 | { |
---|
1472 | add_to_list (&exports, initname); |
---|
1473 | add_to_list (&exports, fininame); |
---|
1474 | add_to_list (&exports, "_GLOBAL__DI"); |
---|
1475 | add_to_list (&exports, "_GLOBAL__DD"); |
---|
1476 | exportf = fopen (export_file, "w"); |
---|
1477 | if (exportf == (FILE *)0) |
---|
1478 | fatal_perror ("%s", export_file); |
---|
1479 | write_export_file (exportf); |
---|
1480 | if (fclose (exportf)) |
---|
1481 | fatal_perror ("closing %s", export_file); |
---|
1482 | } |
---|
1483 | #endif |
---|
1484 | |
---|
1485 | if (debug) |
---|
1486 | { |
---|
1487 | fprintf (stderr, "\n========== output_file = %s, c_file = %s\n", |
---|
1488 | output_file, c_file); |
---|
1489 | write_c_file (stderr, "stderr"); |
---|
1490 | fprintf (stderr, "========== end of c_file\n\n"); |
---|
1491 | #ifdef COLLECT_EXPORT_LIST |
---|
1492 | fprintf (stderr, "\n========== export_file = %s\n", export_file); |
---|
1493 | write_export_file (stderr); |
---|
1494 | fprintf (stderr, "========== end of export_file\n\n"); |
---|
1495 | #endif |
---|
1496 | } |
---|
1497 | |
---|
1498 | /* Assemble the constructor and destructor tables. |
---|
1499 | Link the tables in with the rest of the program. */ |
---|
1500 | |
---|
1501 | fork_execute ("gcc", c_argv); |
---|
1502 | fork_execute ("ld", ld2_argv); |
---|
1503 | |
---|
1504 | /* Let scan_prog_file do any final mods (OSF/rose needs this for |
---|
1505 | constructors/destructors in shared libraries. */ |
---|
1506 | scan_prog_file (output_file, PASS_SECOND); |
---|
1507 | |
---|
1508 | maybe_unlink (c_file); |
---|
1509 | maybe_unlink (o_file); |
---|
1510 | maybe_unlink (export_file); |
---|
1511 | return 0; |
---|
1512 | } |
---|
1513 | |
---|
1514 | |
---|
1515 | /* Wait for a process to finish, and exit if a non-zero status is found. */ |
---|
1516 | |
---|
1517 | int |
---|
1518 | collect_wait (prog) |
---|
1519 | char *prog; |
---|
1520 | { |
---|
1521 | int status; |
---|
1522 | |
---|
1523 | wait (&status); |
---|
1524 | if (status) |
---|
1525 | { |
---|
1526 | if (WIFSIGNALED (status)) |
---|
1527 | { |
---|
1528 | int sig = WTERMSIG (status); |
---|
1529 | #ifdef NO_SYS_SIGLIST |
---|
1530 | error ("%s terminated with signal %d %s", |
---|
1531 | prog, |
---|
1532 | sig, |
---|
1533 | (status & 0200) ? ", core dumped" : ""); |
---|
1534 | #else |
---|
1535 | error ("%s terminated with signal %d [%s]%s", |
---|
1536 | prog, |
---|
1537 | sig, |
---|
1538 | sys_siglist[sig], |
---|
1539 | (status & 0200) ? ", core dumped" : ""); |
---|
1540 | #endif |
---|
1541 | |
---|
1542 | collect_exit (127); |
---|
1543 | } |
---|
1544 | |
---|
1545 | if (WIFEXITED (status)) |
---|
1546 | return WEXITSTATUS (status); |
---|
1547 | } |
---|
1548 | return 0; |
---|
1549 | } |
---|
1550 | |
---|
1551 | static void |
---|
1552 | do_wait (prog) |
---|
1553 | char *prog; |
---|
1554 | { |
---|
1555 | int ret = collect_wait (prog); |
---|
1556 | if (ret != 0) |
---|
1557 | { |
---|
1558 | error ("%s returned %d exit status", prog, ret); |
---|
1559 | collect_exit (ret); |
---|
1560 | } |
---|
1561 | } |
---|
1562 | |
---|
1563 | |
---|
1564 | /* Fork and execute a program, and wait for the reply. */ |
---|
1565 | |
---|
1566 | void |
---|
1567 | collect_execute (prog, argv, redir) |
---|
1568 | char *prog; |
---|
1569 | char **argv; |
---|
1570 | char *redir; |
---|
1571 | { |
---|
1572 | int pid; |
---|
1573 | |
---|
1574 | if (vflag || debug) |
---|
1575 | { |
---|
1576 | char **p_argv; |
---|
1577 | char *str; |
---|
1578 | |
---|
1579 | if (argv[0]) |
---|
1580 | fprintf (stderr, "%s", argv[0]); |
---|
1581 | else |
---|
1582 | fprintf (stderr, "[cannot find %s]", prog); |
---|
1583 | |
---|
1584 | for (p_argv = &argv[1]; (str = *p_argv) != (char *)0; p_argv++) |
---|
1585 | fprintf (stderr, " %s", str); |
---|
1586 | |
---|
1587 | fprintf (stderr, "\n"); |
---|
1588 | } |
---|
1589 | |
---|
1590 | fflush (stdout); |
---|
1591 | fflush (stderr); |
---|
1592 | |
---|
1593 | /* If we can't find a program we need, complain error. Do this here |
---|
1594 | since we might not end up needing something that we couldn't find. */ |
---|
1595 | |
---|
1596 | if (argv[0] == 0) |
---|
1597 | fatal ("cannot find `%s'", prog); |
---|
1598 | |
---|
1599 | pid = vfork (); |
---|
1600 | if (pid == -1) |
---|
1601 | { |
---|
1602 | #ifdef vfork |
---|
1603 | fatal_perror ("fork"); |
---|
1604 | #else |
---|
1605 | fatal_perror ("vfork"); |
---|
1606 | #endif |
---|
1607 | } |
---|
1608 | |
---|
1609 | if (pid == 0) /* child context */ |
---|
1610 | { |
---|
1611 | if (redir) |
---|
1612 | { |
---|
1613 | unlink (redir); |
---|
1614 | if (freopen (redir, "a", stdout) == NULL) |
---|
1615 | fatal_perror ("redirecting stdout"); |
---|
1616 | if (freopen (redir, "a", stderr) == NULL) |
---|
1617 | fatal_perror ("redirecting stderr"); |
---|
1618 | } |
---|
1619 | |
---|
1620 | execvp (argv[0], argv); |
---|
1621 | fatal_perror ("executing %s", prog); |
---|
1622 | } |
---|
1623 | } |
---|
1624 | |
---|
1625 | static void |
---|
1626 | fork_execute (prog, argv) |
---|
1627 | char *prog; |
---|
1628 | char **argv; |
---|
1629 | { |
---|
1630 | collect_execute (prog, argv, NULL); |
---|
1631 | do_wait (prog); |
---|
1632 | } |
---|
1633 | |
---|
1634 | /* Unlink a file unless we are debugging. */ |
---|
1635 | |
---|
1636 | static void |
---|
1637 | maybe_unlink (file) |
---|
1638 | char *file; |
---|
1639 | { |
---|
1640 | if (!debug) |
---|
1641 | unlink (file); |
---|
1642 | else |
---|
1643 | fprintf (stderr, "[Leaving %s]\n", file); |
---|
1644 | } |
---|
1645 | |
---|
1646 | |
---|
1647 | /* Add a name to a linked list. */ |
---|
1648 | |
---|
1649 | static void |
---|
1650 | add_to_list (head_ptr, name) |
---|
1651 | struct head *head_ptr; |
---|
1652 | char *name; |
---|
1653 | { |
---|
1654 | struct id *newid |
---|
1655 | = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1); |
---|
1656 | struct id *p; |
---|
1657 | static long sequence_number = 0; |
---|
1658 | strcpy (newid->name, name); |
---|
1659 | |
---|
1660 | if (head_ptr->first) |
---|
1661 | head_ptr->last->next = newid; |
---|
1662 | else |
---|
1663 | head_ptr->first = newid; |
---|
1664 | |
---|
1665 | /* Check for duplicate symbols. */ |
---|
1666 | for (p = head_ptr->first; |
---|
1667 | strcmp (name, p->name) != 0; |
---|
1668 | p = p->next) |
---|
1669 | ; |
---|
1670 | if (p != newid) |
---|
1671 | { |
---|
1672 | head_ptr->last->next = 0; |
---|
1673 | free (newid); |
---|
1674 | return; |
---|
1675 | } |
---|
1676 | |
---|
1677 | newid->sequence = ++sequence_number; |
---|
1678 | head_ptr->last = newid; |
---|
1679 | head_ptr->number++; |
---|
1680 | } |
---|
1681 | |
---|
1682 | /* Write: `prefix', the names on list LIST, `suffix'. */ |
---|
1683 | |
---|
1684 | static void |
---|
1685 | write_list (stream, prefix, list) |
---|
1686 | FILE *stream; |
---|
1687 | char *prefix; |
---|
1688 | struct id *list; |
---|
1689 | { |
---|
1690 | while (list) |
---|
1691 | { |
---|
1692 | fprintf (stream, "%sx%d,\n", prefix, list->sequence); |
---|
1693 | list = list->next; |
---|
1694 | } |
---|
1695 | } |
---|
1696 | |
---|
1697 | static void |
---|
1698 | write_list_with_asm (stream, prefix, list) |
---|
1699 | FILE *stream; |
---|
1700 | char *prefix; |
---|
1701 | struct id *list; |
---|
1702 | { |
---|
1703 | while (list) |
---|
1704 | { |
---|
1705 | fprintf (stream, "%sx%d __asm__ (\"%s\");\n", |
---|
1706 | prefix, list->sequence, list->name); |
---|
1707 | list = list->next; |
---|
1708 | } |
---|
1709 | } |
---|
1710 | |
---|
1711 | /* Write out the constructor and destructor tables statically (for a shared |
---|
1712 | object), along with the functions to execute them. */ |
---|
1713 | |
---|
1714 | static void |
---|
1715 | write_c_file_stat (stream, name) |
---|
1716 | FILE *stream; |
---|
1717 | char *name; |
---|
1718 | { |
---|
1719 | char *prefix, *p, *q; |
---|
1720 | |
---|
1721 | /* Figure out name of output_file, stripping off .so version. */ |
---|
1722 | p = rindex (output_file, '/'); |
---|
1723 | if (p == 0) |
---|
1724 | p = (char *) output_file; |
---|
1725 | else |
---|
1726 | p++; |
---|
1727 | q = p; |
---|
1728 | while (q) |
---|
1729 | { |
---|
1730 | q = index (q,'.'); |
---|
1731 | if (q == 0) |
---|
1732 | { |
---|
1733 | q = p + strlen (p); |
---|
1734 | break; |
---|
1735 | } |
---|
1736 | else |
---|
1737 | { |
---|
1738 | if (strncmp (q, ".so", 3) == 0) |
---|
1739 | { |
---|
1740 | q += 3; |
---|
1741 | break; |
---|
1742 | } |
---|
1743 | else |
---|
1744 | q++; |
---|
1745 | } |
---|
1746 | } |
---|
1747 | /* q points to null at end of the string (or . of the .so version) */ |
---|
1748 | prefix = xmalloc (q - p + 1); |
---|
1749 | strncpy (prefix, p, q - p); |
---|
1750 | prefix[q - p] = 0; |
---|
1751 | for (q = prefix; *q; q++) |
---|
1752 | if (!isalnum (*q)) |
---|
1753 | *q = '_'; |
---|
1754 | if (debug) |
---|
1755 | fprintf (stderr, "\nwrite_c_file - output name is %s, prefix is %s\n", |
---|
1756 | output_file, prefix); |
---|
1757 | |
---|
1758 | #define INIT_NAME_FORMAT "_GLOBAL__FI_%s" |
---|
1759 | initname = xmalloc (strlen (prefix) + sizeof (INIT_NAME_FORMAT) - 2); |
---|
1760 | sprintf (initname, INIT_NAME_FORMAT, prefix); |
---|
1761 | |
---|
1762 | #define FINI_NAME_FORMAT "_GLOBAL__FD_%s" |
---|
1763 | fininame = xmalloc (strlen (prefix) + sizeof (FINI_NAME_FORMAT) - 2); |
---|
1764 | sprintf (fininame, FINI_NAME_FORMAT, prefix); |
---|
1765 | |
---|
1766 | free (prefix); |
---|
1767 | |
---|
1768 | /* Write the tables as C code */ |
---|
1769 | |
---|
1770 | fprintf (stream, "static int count;\n"); |
---|
1771 | fprintf (stream, "typedef void entry_pt();\n"); |
---|
1772 | write_list_with_asm (stream, "extern entry_pt ", constructors.first); |
---|
1773 | fprintf (stream, "void %s() {\n", initname); |
---|
1774 | if (constructors.number > 0) |
---|
1775 | { |
---|
1776 | fprintf (stream, "\tstatic entry_pt *ctors[] = {\n"); |
---|
1777 | write_list (stream, "\t\t", constructors.first); |
---|
1778 | fprintf (stream, "\t};\n"); |
---|
1779 | fprintf (stream, "\tentry_pt **p;\n"); |
---|
1780 | fprintf (stream, "\tif (count++ != 0) return;\n"); |
---|
1781 | fprintf (stream, "\tp = ctors + %d;\n", constructors.number); |
---|
1782 | fprintf (stream, "\twhile (p > ctors) (*--p)();\n"); |
---|
1783 | } |
---|
1784 | else |
---|
1785 | fprintf (stream, "\t++count;\n"); |
---|
1786 | fprintf (stream, "}\n"); |
---|
1787 | write_list_with_asm (stream, "extern entry_pt ", destructors.first); |
---|
1788 | fprintf (stream, "void %s() {\n", fininame); |
---|
1789 | if (destructors.number > 0) |
---|
1790 | { |
---|
1791 | fprintf (stream, "\tstatic entry_pt *dtors[] = {\n"); |
---|
1792 | write_list (stream, "\t\t", destructors.first); |
---|
1793 | fprintf (stream, "\t};\n"); |
---|
1794 | fprintf (stream, "\tentry_pt **p;\n"); |
---|
1795 | fprintf (stream, "\tif (--count != 0) return;\n"); |
---|
1796 | fprintf (stream, "\tp = dtors;\n"); |
---|
1797 | fprintf (stream, "\twhile (p < dtors + %d) (*p++)();\n", |
---|
1798 | destructors.number); |
---|
1799 | } |
---|
1800 | fprintf (stream, "}\n"); |
---|
1801 | |
---|
1802 | if (shared_obj) |
---|
1803 | { |
---|
1804 | fprintf (stream, "void _GLOBAL__DI() {\n\t%s();\n}\n", initname); |
---|
1805 | fprintf (stream, "void _GLOBAL__DD() {\n\t%s();\n}\n", fininame); |
---|
1806 | } |
---|
1807 | } |
---|
1808 | |
---|
1809 | /* Write the constructor/destructor tables. */ |
---|
1810 | |
---|
1811 | static void |
---|
1812 | write_c_file_glob (stream, name) |
---|
1813 | FILE *stream; |
---|
1814 | char *name; |
---|
1815 | { |
---|
1816 | /* Write the tables as C code */ |
---|
1817 | |
---|
1818 | fprintf (stream, "typedef void entry_pt();\n\n"); |
---|
1819 | |
---|
1820 | write_list_with_asm (stream, "extern entry_pt ", constructors.first); |
---|
1821 | |
---|
1822 | fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n"); |
---|
1823 | fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number); |
---|
1824 | write_list (stream, "\t", constructors.first); |
---|
1825 | fprintf (stream, "\t0\n};\n\n"); |
---|
1826 | |
---|
1827 | write_list_with_asm (stream, "extern entry_pt ", destructors.first); |
---|
1828 | |
---|
1829 | fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n"); |
---|
1830 | fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number); |
---|
1831 | write_list (stream, "\t", destructors.first); |
---|
1832 | fprintf (stream, "\t0\n};\n\n"); |
---|
1833 | |
---|
1834 | fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN); |
---|
1835 | fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN); |
---|
1836 | } |
---|
1837 | |
---|
1838 | static void |
---|
1839 | write_c_file (stream, name) |
---|
1840 | FILE *stream; |
---|
1841 | char *name; |
---|
1842 | { |
---|
1843 | #ifndef LD_INIT_SWITCH |
---|
1844 | if (! shared_obj) |
---|
1845 | write_c_file_glob (stream, name); |
---|
1846 | else |
---|
1847 | #endif |
---|
1848 | write_c_file_stat (stream, name); |
---|
1849 | } |
---|
1850 | |
---|
1851 | static void |
---|
1852 | write_export_file (stream) |
---|
1853 | FILE *stream; |
---|
1854 | { |
---|
1855 | struct id *list = exports.first; |
---|
1856 | for (; list; list = list->next) |
---|
1857 | fprintf (stream, "%s\n", list->name); |
---|
1858 | } |
---|
1859 | |
---|
1860 | #ifdef OBJECT_FORMAT_NONE |
---|
1861 | |
---|
1862 | /* Generic version to scan the name list of the loaded program for |
---|
1863 | the symbols g++ uses for static constructors and destructors. |
---|
1864 | |
---|
1865 | The constructor table begins at __CTOR_LIST__ and contains a count |
---|
1866 | of the number of pointers (or -1 if the constructors are built in a |
---|
1867 | separate section by the linker), followed by the pointers to the |
---|
1868 | constructor functions, terminated with a null pointer. The |
---|
1869 | destructor table has the same format, and begins at __DTOR_LIST__. */ |
---|
1870 | |
---|
1871 | static void |
---|
1872 | scan_prog_file (prog_name, which_pass) |
---|
1873 | char *prog_name; |
---|
1874 | enum pass which_pass; |
---|
1875 | { |
---|
1876 | void (*int_handler) (); |
---|
1877 | void (*quit_handler) (); |
---|
1878 | char *nm_argv[4]; |
---|
1879 | int pid; |
---|
1880 | int argc = 0; |
---|
1881 | int pipe_fd[2]; |
---|
1882 | char *p, buf[1024]; |
---|
1883 | FILE *inf; |
---|
1884 | |
---|
1885 | if (which_pass == PASS_SECOND) |
---|
1886 | return; |
---|
1887 | |
---|
1888 | /* If we don't have an `nm', complain. */ |
---|
1889 | if (nm_file_name == 0) |
---|
1890 | fatal ("cannot find `nm'"); |
---|
1891 | |
---|
1892 | nm_argv[argc++] = nm_file_name; |
---|
1893 | if (NM_FLAGS[0] != '\0') |
---|
1894 | nm_argv[argc++] = NM_FLAGS; |
---|
1895 | |
---|
1896 | nm_argv[argc++] = prog_name; |
---|
1897 | nm_argv[argc++] = (char *)0; |
---|
1898 | |
---|
1899 | if (pipe (pipe_fd) < 0) |
---|
1900 | fatal_perror ("pipe"); |
---|
1901 | |
---|
1902 | inf = fdopen (pipe_fd[0], "r"); |
---|
1903 | if (inf == (FILE *)0) |
---|
1904 | fatal_perror ("fdopen"); |
---|
1905 | |
---|
1906 | /* Trace if needed. */ |
---|
1907 | if (vflag) |
---|
1908 | { |
---|
1909 | char **p_argv; |
---|
1910 | char *str; |
---|
1911 | |
---|
1912 | for (p_argv = &nm_argv[0]; (str = *p_argv) != (char *)0; p_argv++) |
---|
1913 | fprintf (stderr, " %s", str); |
---|
1914 | |
---|
1915 | fprintf (stderr, "\n"); |
---|
1916 | } |
---|
1917 | |
---|
1918 | fflush (stdout); |
---|
1919 | fflush (stderr); |
---|
1920 | |
---|
1921 | /* Spawn child nm on pipe */ |
---|
1922 | pid = vfork (); |
---|
1923 | if (pid == -1) |
---|
1924 | { |
---|
1925 | #ifdef vfork |
---|
1926 | fatal_perror ("fork"); |
---|
1927 | #else |
---|
1928 | fatal_perror ("vfork"); |
---|
1929 | #endif |
---|
1930 | } |
---|
1931 | |
---|
1932 | if (pid == 0) /* child context */ |
---|
1933 | { |
---|
1934 | /* setup stdout */ |
---|
1935 | if (dup2 (pipe_fd[1], 1) < 0) |
---|
1936 | fatal_perror ("dup2 (%d, 1)", pipe_fd[1]); |
---|
1937 | |
---|
1938 | if (close (pipe_fd[0]) < 0) |
---|
1939 | fatal_perror ("close (%d)", pipe_fd[0]); |
---|
1940 | |
---|
1941 | if (close (pipe_fd[1]) < 0) |
---|
1942 | fatal_perror ("close (%d)", pipe_fd[1]); |
---|
1943 | |
---|
1944 | execv (nm_file_name, nm_argv); |
---|
1945 | fatal_perror ("executing %s", nm_file_name); |
---|
1946 | } |
---|
1947 | |
---|
1948 | /* Parent context from here on. */ |
---|
1949 | int_handler = (void (*) ())signal (SIGINT, SIG_IGN); |
---|
1950 | #ifdef SIGQUIT |
---|
1951 | quit_handler = (void (*) ())signal (SIGQUIT, SIG_IGN); |
---|
1952 | #endif |
---|
1953 | |
---|
1954 | if (close (pipe_fd[1]) < 0) |
---|
1955 | fatal_perror ("close (%d)", pipe_fd[1]); |
---|
1956 | |
---|
1957 | if (debug) |
---|
1958 | fprintf (stderr, "\nnm output with constructors/destructors.\n"); |
---|
1959 | |
---|
1960 | /* Read each line of nm output. */ |
---|
1961 | while (fgets (buf, sizeof buf, inf) != (char *)0) |
---|
1962 | { |
---|
1963 | int ch, ch2; |
---|
1964 | char *name, *end; |
---|
1965 | |
---|
1966 | /* If it contains a constructor or destructor name, add the name |
---|
1967 | to the appropriate list. */ |
---|
1968 | |
---|
1969 | for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++) |
---|
1970 | if (ch == ' ' && p[1] == 'U' && p[2] == ' ') |
---|
1971 | break; |
---|
1972 | |
---|
1973 | if (ch != '_') |
---|
1974 | continue; |
---|
1975 | |
---|
1976 | name = p; |
---|
1977 | /* Find the end of the symbol name. |
---|
1978 | Don't include `|', because Encore nm can tack that on the end. */ |
---|
1979 | for (end = p; (ch2 = *end) != '\0' && !isspace (ch2) && ch2 != '|'; |
---|
1980 | end++) |
---|
1981 | continue; |
---|
1982 | |
---|
1983 | |
---|
1984 | *end = '\0'; |
---|
1985 | switch (is_ctor_dtor (name)) |
---|
1986 | { |
---|
1987 | case 1: |
---|
1988 | if (which_pass != PASS_LIB) |
---|
1989 | add_to_list (&constructors, name); |
---|
1990 | break; |
---|
1991 | |
---|
1992 | case 2: |
---|
1993 | if (which_pass != PASS_LIB) |
---|
1994 | add_to_list (&destructors, name); |
---|
1995 | break; |
---|
1996 | |
---|
1997 | case 3: |
---|
1998 | if (which_pass != PASS_LIB) |
---|
1999 | fatal ("init function found in object %s", prog_name); |
---|
2000 | #ifndef LD_INIT_SWITCH |
---|
2001 | add_to_list (&constructors, name); |
---|
2002 | #endif |
---|
2003 | break; |
---|
2004 | |
---|
2005 | case 4: |
---|
2006 | if (which_pass != PASS_LIB) |
---|
2007 | fatal ("fini function found in object %s", prog_name); |
---|
2008 | #ifndef LD_FINI_SWITCH |
---|
2009 | add_to_list (&destructors, name); |
---|
2010 | #endif |
---|
2011 | break; |
---|
2012 | |
---|
2013 | default: /* not a constructor or destructor */ |
---|
2014 | continue; |
---|
2015 | } |
---|
2016 | |
---|
2017 | if (debug) |
---|
2018 | fprintf (stderr, "\t%s\n", buf); |
---|
2019 | } |
---|
2020 | |
---|
2021 | if (debug) |
---|
2022 | fprintf (stderr, "\n"); |
---|
2023 | |
---|
2024 | if (fclose (inf) != 0) |
---|
2025 | fatal_perror ("fclose of pipe"); |
---|
2026 | |
---|
2027 | do_wait (nm_file_name); |
---|
2028 | |
---|
2029 | signal (SIGINT, int_handler); |
---|
2030 | #ifdef SIGQUIT |
---|
2031 | signal (SIGQUIT, quit_handler); |
---|
2032 | #endif |
---|
2033 | } |
---|
2034 | |
---|
2035 | #if SUNOS4_SHARED_LIBRARIES |
---|
2036 | |
---|
2037 | /* Routines to scan the SunOS 4 _DYNAMIC structure to find shared libraries |
---|
2038 | that the output file depends upon and their initialization/finalization |
---|
2039 | routines, if any. */ |
---|
2040 | |
---|
2041 | #include <a.out.h> |
---|
2042 | #include <fcntl.h> |
---|
2043 | #include <link.h> |
---|
2044 | #include <sys/mman.h> |
---|
2045 | #include <sys/param.h> |
---|
2046 | #include <sys/unistd.h> |
---|
2047 | #include <sys/dir.h> |
---|
2048 | |
---|
2049 | /* pointers to the object file */ |
---|
2050 | unsigned object; /* address of memory mapped file */ |
---|
2051 | unsigned objsize; /* size of memory mapped to file */ |
---|
2052 | char * code; /* pointer to code segment */ |
---|
2053 | char * data; /* pointer to data segment */ |
---|
2054 | struct nlist *symtab; /* pointer to symbol table */ |
---|
2055 | struct link_dynamic *ld; |
---|
2056 | struct link_dynamic_2 *ld_2; |
---|
2057 | struct head libraries; |
---|
2058 | |
---|
2059 | /* Map the file indicated by NAME into memory and store its address. */ |
---|
2060 | |
---|
2061 | static void |
---|
2062 | mapfile (name) |
---|
2063 | char *name; |
---|
2064 | { |
---|
2065 | int fp; |
---|
2066 | struct stat s; |
---|
2067 | if ((fp = open (name, O_RDONLY)) == -1) |
---|
2068 | fatal ("unable to open file '%s'", name); |
---|
2069 | if (fstat (fp, &s) == -1) |
---|
2070 | fatal ("unable to stat file '%s'", name); |
---|
2071 | |
---|
2072 | objsize = s.st_size; |
---|
2073 | object = (unsigned) mmap (0, objsize, PROT_READ|PROT_WRITE, MAP_PRIVATE, |
---|
2074 | fp, 0); |
---|
2075 | if (object == -1) |
---|
2076 | fatal ("unable to mmap file '%s'", name); |
---|
2077 | |
---|
2078 | close (fp); |
---|
2079 | } |
---|
2080 | |
---|
2081 | /* Helpers for locatelib. */ |
---|
2082 | |
---|
2083 | static char *libname; |
---|
2084 | |
---|
2085 | static int |
---|
2086 | libselect (d) |
---|
2087 | struct direct *d; |
---|
2088 | { |
---|
2089 | return (strncmp (libname, d->d_name, strlen (libname)) == 0); |
---|
2090 | } |
---|
2091 | |
---|
2092 | /* If one file has an additional numeric extension past LIBNAME, then put |
---|
2093 | that one first in the sort. If both files have additional numeric |
---|
2094 | extensions, then put the one with the higher number first in the sort. |
---|
2095 | |
---|
2096 | We must verify that the extension is numeric, because Sun saves the |
---|
2097 | original versions of patched libraries with a .FCS extension. Files with |
---|
2098 | invalid extensions must go last in the sort, so that they won't be used. */ |
---|
2099 | |
---|
2100 | static int |
---|
2101 | libcompare (d1, d2) |
---|
2102 | struct direct **d1, **d2; |
---|
2103 | { |
---|
2104 | int i1, i2 = strlen (libname); |
---|
2105 | char *e1 = (*d1)->d_name + i2; |
---|
2106 | char *e2 = (*d2)->d_name + i2; |
---|
2107 | |
---|
2108 | while (*e1 && *e2 && *e1 == '.' && *e2 == '.' |
---|
2109 | && e1[1] && isdigit (e1[1]) && e2[1] && isdigit (e2[1])) |
---|
2110 | { |
---|
2111 | ++e1; |
---|
2112 | ++e2; |
---|
2113 | i1 = strtol (e1, &e1, 10); |
---|
2114 | i2 = strtol (e2, &e2, 10); |
---|
2115 | if (i1 != i2) |
---|
2116 | return i1 - i2; |
---|
2117 | } |
---|
2118 | |
---|
2119 | if (*e1) |
---|
2120 | { |
---|
2121 | /* It has a valid numeric extension, prefer this one. */ |
---|
2122 | if (*e1 == '.' && e1[1] && isdigit (e1[1])) |
---|
2123 | return 1; |
---|
2124 | /* It has a invalid numeric extension, must prefer the other one. */ |
---|
2125 | else |
---|
2126 | return -1; |
---|
2127 | } |
---|
2128 | else if (*e2) |
---|
2129 | { |
---|
2130 | /* It has a valid numeric extension, prefer this one. */ |
---|
2131 | if (*e2 == '.' && e2[1] && isdigit (e2[1])) |
---|
2132 | return -1; |
---|
2133 | /* It has a invalid numeric extension, must prefer the other one. */ |
---|
2134 | else |
---|
2135 | return 1; |
---|
2136 | } |
---|
2137 | else |
---|
2138 | return 0; |
---|
2139 | } |
---|
2140 | |
---|
2141 | /* Given the name NAME of a dynamic dependency, find its pathname and add |
---|
2142 | it to the list of libraries. */ |
---|
2143 | |
---|
2144 | static void |
---|
2145 | locatelib (name) |
---|
2146 | char *name; |
---|
2147 | { |
---|
2148 | static char **l; |
---|
2149 | static int cnt; |
---|
2150 | char buf[MAXPATHLEN]; |
---|
2151 | char *p, *q; |
---|
2152 | char **pp; |
---|
2153 | |
---|
2154 | if (l == 0) |
---|
2155 | { |
---|
2156 | char *ld_rules; |
---|
2157 | char *ldr = 0; |
---|
2158 | /* counting elements in array, need 1 extra for null */ |
---|
2159 | cnt = 1; |
---|
2160 | ld_rules = (char *) (ld_2->ld_rules + code); |
---|
2161 | if (ld_rules) |
---|
2162 | { |
---|
2163 | cnt++; |
---|
2164 | for (; *ld_rules != 0; ld_rules++) |
---|
2165 | if (*ld_rules == ':') |
---|
2166 | cnt++; |
---|
2167 | ld_rules = (char *) (ld_2->ld_rules + code); |
---|
2168 | ldr = (char *) malloc (strlen (ld_rules) + 1); |
---|
2169 | strcpy (ldr, ld_rules); |
---|
2170 | } |
---|
2171 | p = getenv ("LD_LIBRARY_PATH"); |
---|
2172 | q = 0; |
---|
2173 | if (p) |
---|
2174 | { |
---|
2175 | cnt++; |
---|
2176 | for (q = p ; *q != 0; q++) |
---|
2177 | if (*q == ':') |
---|
2178 | cnt++; |
---|
2179 | q = (char *) malloc (strlen (p) + 1); |
---|
2180 | strcpy (q, p); |
---|
2181 | } |
---|
2182 | l = (char **) malloc ((cnt + 3) * sizeof (char *)); |
---|
2183 | pp = l; |
---|
2184 | if (ldr) |
---|
2185 | { |
---|
2186 | *pp++ = ldr; |
---|
2187 | for (; *ldr != 0; ldr++) |
---|
2188 | if (*ldr == ':') |
---|
2189 | { |
---|
2190 | *ldr++ = 0; |
---|
2191 | *pp++ = ldr; |
---|
2192 | } |
---|
2193 | } |
---|
2194 | if (q) |
---|
2195 | { |
---|
2196 | *pp++ = q; |
---|
2197 | for (; *q != 0; q++) |
---|
2198 | if (*q == ':') |
---|
2199 | { |
---|
2200 | *q++ = 0; |
---|
2201 | *pp++ = q; |
---|
2202 | } |
---|
2203 | } |
---|
2204 | /* built in directories are /lib, /usr/lib, and /usr/local/lib */ |
---|
2205 | *pp++ = "/lib"; |
---|
2206 | *pp++ = "/usr/lib"; |
---|
2207 | *pp++ = "/usr/local/lib"; |
---|
2208 | *pp = 0; |
---|
2209 | } |
---|
2210 | libname = name; |
---|
2211 | for (pp = l; *pp != 0 ; pp++) |
---|
2212 | { |
---|
2213 | struct direct **namelist; |
---|
2214 | int entries; |
---|
2215 | if ((entries = scandir (*pp, &namelist, libselect, libcompare)) > 0) |
---|
2216 | { |
---|
2217 | sprintf (buf, "%s/%s", *pp, namelist[entries - 1]->d_name); |
---|
2218 | add_to_list (&libraries, buf); |
---|
2219 | if (debug) |
---|
2220 | fprintf (stderr, "%s\n", buf); |
---|
2221 | break; |
---|
2222 | } |
---|
2223 | } |
---|
2224 | if (*pp == 0) |
---|
2225 | { |
---|
2226 | if (debug) |
---|
2227 | fprintf (stderr, "not found\n"); |
---|
2228 | else |
---|
2229 | fatal ("dynamic dependency %s not found", name); |
---|
2230 | } |
---|
2231 | } |
---|
2232 | |
---|
2233 | /* Scan the _DYNAMIC structure of the output file to find shared libraries |
---|
2234 | that it depends upon and any constructors or destructors they contain. */ |
---|
2235 | |
---|
2236 | static void |
---|
2237 | scan_libraries (prog_name) |
---|
2238 | char *prog_name; |
---|
2239 | { |
---|
2240 | struct exec *header; |
---|
2241 | char *base; |
---|
2242 | struct link_object *lo; |
---|
2243 | char buff[MAXPATHLEN]; |
---|
2244 | struct id *list; |
---|
2245 | |
---|
2246 | mapfile (prog_name); |
---|
2247 | header = (struct exec *)object; |
---|
2248 | if (N_BADMAG (*header)) |
---|
2249 | fatal ("bad magic number in file '%s'", prog_name); |
---|
2250 | if (header->a_dynamic == 0) |
---|
2251 | return; |
---|
2252 | |
---|
2253 | code = (char *) (N_TXTOFF (*header) + (long) header); |
---|
2254 | data = (char *) (N_DATOFF (*header) + (long) header); |
---|
2255 | symtab = (struct nlist *) (N_SYMOFF (*header) + (long) header); |
---|
2256 | |
---|
2257 | if (header->a_magic == ZMAGIC && header->a_entry == 0x20) |
---|
2258 | { |
---|
2259 | /* shared object */ |
---|
2260 | ld = (struct link_dynamic *) (symtab->n_value + code); |
---|
2261 | base = code; |
---|
2262 | } |
---|
2263 | else |
---|
2264 | { |
---|
2265 | /* executable */ |
---|
2266 | ld = (struct link_dynamic *) data; |
---|
2267 | base = code-PAGSIZ; |
---|
2268 | } |
---|
2269 | |
---|
2270 | if (debug) |
---|
2271 | fprintf (stderr, "dynamic dependencies.\n"); |
---|
2272 | |
---|
2273 | ld_2 = (struct link_dynamic_2 *) ((long) ld->ld_un.ld_2 + (long)base); |
---|
2274 | for (lo = (struct link_object *) ld_2->ld_need; lo; |
---|
2275 | lo = (struct link_object *) lo->lo_next) |
---|
2276 | { |
---|
2277 | char *name; |
---|
2278 | lo = (struct link_object *) ((long) lo + code); |
---|
2279 | name = (char *) (code + lo->lo_name); |
---|
2280 | if (lo->lo_library) |
---|
2281 | { |
---|
2282 | if (debug) |
---|
2283 | fprintf (stderr, "\t-l%s.%d => ", name, lo->lo_major); |
---|
2284 | sprintf (buff, "lib%s.so.%d.%d", name, lo->lo_major, lo->lo_minor); |
---|
2285 | locatelib (buff); |
---|
2286 | } |
---|
2287 | else |
---|
2288 | { |
---|
2289 | if (debug) |
---|
2290 | fprintf (stderr, "\t%s\n", name); |
---|
2291 | add_to_list (&libraries, name); |
---|
2292 | } |
---|
2293 | } |
---|
2294 | |
---|
2295 | if (debug) |
---|
2296 | fprintf (stderr, "\n"); |
---|
2297 | |
---|
2298 | /* now iterate through the library list adding their symbols to |
---|
2299 | the list. */ |
---|
2300 | for (list = libraries.first; list; list = list->next) |
---|
2301 | scan_prog_file (list->name, PASS_LIB); |
---|
2302 | } |
---|
2303 | |
---|
2304 | #else /* SUNOS4_SHARED_LIBRARIES */ |
---|
2305 | #ifdef LDD_SUFFIX |
---|
2306 | |
---|
2307 | /* Use the List Dynamic Dependencies program to find shared libraries that |
---|
2308 | the output file depends upon and their initialization/finalization |
---|
2309 | routines, if any. */ |
---|
2310 | |
---|
2311 | static void |
---|
2312 | scan_libraries (prog_name) |
---|
2313 | char *prog_name; |
---|
2314 | { |
---|
2315 | static struct head libraries; /* list of shared libraries found */ |
---|
2316 | struct id *list; |
---|
2317 | void (*int_handler) (); |
---|
2318 | void (*quit_handler) (); |
---|
2319 | char *ldd_argv[4]; |
---|
2320 | int pid; |
---|
2321 | int argc = 0; |
---|
2322 | int pipe_fd[2]; |
---|
2323 | char buf[1024]; |
---|
2324 | FILE *inf; |
---|
2325 | |
---|
2326 | /* If we don't have an `ldd', complain. */ |
---|
2327 | if (ldd_file_name == 0) |
---|
2328 | { |
---|
2329 | error ("cannot find `ldd'"); |
---|
2330 | return; |
---|
2331 | } |
---|
2332 | |
---|
2333 | ldd_argv[argc++] = ldd_file_name; |
---|
2334 | ldd_argv[argc++] = prog_name; |
---|
2335 | ldd_argv[argc++] = (char *) 0; |
---|
2336 | |
---|
2337 | if (pipe (pipe_fd) < 0) |
---|
2338 | fatal_perror ("pipe"); |
---|
2339 | |
---|
2340 | inf = fdopen (pipe_fd[0], "r"); |
---|
2341 | if (inf == (FILE *) 0) |
---|
2342 | fatal_perror ("fdopen"); |
---|
2343 | |
---|
2344 | /* Trace if needed. */ |
---|
2345 | if (vflag) |
---|
2346 | { |
---|
2347 | char **p_argv; |
---|
2348 | char *str; |
---|
2349 | |
---|
2350 | for (p_argv = &ldd_argv[0]; (str = *p_argv) != (char *) 0; p_argv++) |
---|
2351 | fprintf (stderr, " %s", str); |
---|
2352 | |
---|
2353 | fprintf (stderr, "\n"); |
---|
2354 | } |
---|
2355 | |
---|
2356 | fflush (stdout); |
---|
2357 | fflush (stderr); |
---|
2358 | |
---|
2359 | /* Spawn child ldd on pipe */ |
---|
2360 | pid = vfork (); |
---|
2361 | if (pid == -1) |
---|
2362 | { |
---|
2363 | #ifdef vfork |
---|
2364 | fatal_perror ("fork"); |
---|
2365 | #else |
---|
2366 | fatal_perror ("vfork"); |
---|
2367 | #endif |
---|
2368 | } |
---|
2369 | |
---|
2370 | if (pid == 0) /* child context */ |
---|
2371 | { |
---|
2372 | /* setup stdout */ |
---|
2373 | if (dup2 (pipe_fd[1], 1) < 0) |
---|
2374 | fatal_perror ("dup2 (%d, 1)", pipe_fd[1]); |
---|
2375 | |
---|
2376 | if (close (pipe_fd[0]) < 0) |
---|
2377 | fatal_perror ("close (%d)", pipe_fd[0]); |
---|
2378 | |
---|
2379 | if (close (pipe_fd[1]) < 0) |
---|
2380 | fatal_perror ("close (%d)", pipe_fd[1]); |
---|
2381 | |
---|
2382 | execv (ldd_file_name, ldd_argv); |
---|
2383 | fatal_perror ("executing %s", ldd_file_name); |
---|
2384 | } |
---|
2385 | |
---|
2386 | /* Parent context from here on. */ |
---|
2387 | int_handler = (void (*) ()) signal (SIGINT, SIG_IGN); |
---|
2388 | #ifdef SIGQUIT |
---|
2389 | quit_handler = (void (*) ()) signal (SIGQUIT, SIG_IGN); |
---|
2390 | #endif |
---|
2391 | |
---|
2392 | if (close (pipe_fd[1]) < 0) |
---|
2393 | fatal_perror ("close (%d)", pipe_fd[1]); |
---|
2394 | |
---|
2395 | if (debug) |
---|
2396 | fprintf (stderr, "\nldd output with constructors/destructors.\n"); |
---|
2397 | |
---|
2398 | /* Read each line of ldd output. */ |
---|
2399 | while (fgets (buf, sizeof buf, inf) != (char *) 0) |
---|
2400 | { |
---|
2401 | int ch, ch2; |
---|
2402 | char *name, *end, *p = buf; |
---|
2403 | |
---|
2404 | /* Extract names of libraries and add to list. */ |
---|
2405 | PARSE_LDD_OUTPUT (p); |
---|
2406 | if (p == 0) |
---|
2407 | continue; |
---|
2408 | |
---|
2409 | name = p; |
---|
2410 | if (strncmp (name, "not found", sizeof ("not found") - 1) == 0) |
---|
2411 | fatal ("dynamic dependency %s not found", buf); |
---|
2412 | |
---|
2413 | /* Find the end of the symbol name. */ |
---|
2414 | for (end = p; |
---|
2415 | (ch2 = *end) != '\0' && ch2 != '\n' && !isspace (ch2) && ch2 != '|'; |
---|
2416 | end++) |
---|
2417 | continue; |
---|
2418 | *end = '\0'; |
---|
2419 | |
---|
2420 | if (access (name, R_OK) == 0) |
---|
2421 | add_to_list (&libraries, name); |
---|
2422 | else |
---|
2423 | fatal ("unable to open dynamic dependency '%s'", buf); |
---|
2424 | |
---|
2425 | if (debug) |
---|
2426 | fprintf (stderr, "\t%s\n", buf); |
---|
2427 | } |
---|
2428 | if (debug) |
---|
2429 | fprintf (stderr, "\n"); |
---|
2430 | |
---|
2431 | if (fclose (inf) != 0) |
---|
2432 | fatal_perror ("fclose of pipe"); |
---|
2433 | |
---|
2434 | do_wait (ldd_file_name); |
---|
2435 | |
---|
2436 | signal (SIGINT, int_handler); |
---|
2437 | #ifdef SIGQUIT |
---|
2438 | signal (SIGQUIT, quit_handler); |
---|
2439 | #endif |
---|
2440 | |
---|
2441 | /* now iterate through the library list adding their symbols to |
---|
2442 | the list. */ |
---|
2443 | for (list = libraries.first; list; list = list->next) |
---|
2444 | scan_prog_file (list->name, PASS_LIB); |
---|
2445 | } |
---|
2446 | |
---|
2447 | #endif /* LDD_SUFFIX */ |
---|
2448 | #endif /* SUNOS4_SHARED_LIBRARIES */ |
---|
2449 | |
---|
2450 | #endif /* OBJECT_FORMAT_NONE */ |
---|
2451 | |
---|
2452 | |
---|
2453 | /* |
---|
2454 | * COFF specific stuff. |
---|
2455 | */ |
---|
2456 | |
---|
2457 | #ifdef OBJECT_FORMAT_COFF |
---|
2458 | |
---|
2459 | #if defined(EXTENDED_COFF) |
---|
2460 | # define GCC_SYMBOLS(X) (SYMHEADER(X).isymMax + SYMHEADER(X).iextMax) |
---|
2461 | # define GCC_SYMENT SYMR |
---|
2462 | # define GCC_OK_SYMBOL(X) ((X).st == stProc && (X).sc == scText) |
---|
2463 | # define GCC_SYMINC(X) (1) |
---|
2464 | # define GCC_SYMZERO(X) (SYMHEADER(X).isymMax) |
---|
2465 | # define GCC_CHECK_HDR(X) (PSYMTAB(X) != 0) |
---|
2466 | #else |
---|
2467 | # define GCC_SYMBOLS(X) (HEADER(ldptr).f_nsyms) |
---|
2468 | # define GCC_SYMENT SYMENT |
---|
2469 | # define GCC_OK_SYMBOL(X) \ |
---|
2470 | (((X).n_sclass == C_EXT) && \ |
---|
2471 | (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) || \ |
---|
2472 | ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT))) |
---|
2473 | # define GCC_SYMINC(X) ((X).n_numaux+1) |
---|
2474 | # define GCC_SYMZERO(X) 0 |
---|
2475 | # define GCC_CHECK_HDR(X) (1) |
---|
2476 | #endif |
---|
2477 | |
---|
2478 | extern char *ldgetname (); |
---|
2479 | |
---|
2480 | /* COFF version to scan the name list of the loaded program for |
---|
2481 | the symbols g++ uses for static constructors and destructors. |
---|
2482 | |
---|
2483 | The constructor table begins at __CTOR_LIST__ and contains a count |
---|
2484 | of the number of pointers (or -1 if the constructors are built in a |
---|
2485 | separate section by the linker), followed by the pointers to the |
---|
2486 | constructor functions, terminated with a null pointer. The |
---|
2487 | destructor table has the same format, and begins at __DTOR_LIST__. */ |
---|
2488 | |
---|
2489 | static void |
---|
2490 | scan_prog_file (prog_name, which_pass) |
---|
2491 | char *prog_name; |
---|
2492 | enum pass which_pass; |
---|
2493 | { |
---|
2494 | LDFILE *ldptr = NULL; |
---|
2495 | int sym_index, sym_count; |
---|
2496 | |
---|
2497 | if (which_pass != PASS_FIRST && which_pass != PASS_OBJ) |
---|
2498 | return; |
---|
2499 | |
---|
2500 | if ((ldptr = ldopen (prog_name, ldptr)) == NULL) |
---|
2501 | fatal ("%s: can't open as COFF file", prog_name); |
---|
2502 | |
---|
2503 | if (!MY_ISCOFF (HEADER (ldptr).f_magic)) |
---|
2504 | fatal ("%s: not a COFF file", prog_name); |
---|
2505 | |
---|
2506 | if (GCC_CHECK_HDR (ldptr)) |
---|
2507 | { |
---|
2508 | sym_count = GCC_SYMBOLS (ldptr); |
---|
2509 | sym_index = GCC_SYMZERO (ldptr); |
---|
2510 | while (sym_index < sym_count) |
---|
2511 | { |
---|
2512 | GCC_SYMENT symbol; |
---|
2513 | |
---|
2514 | if (ldtbread (ldptr, sym_index, &symbol) <= 0) |
---|
2515 | break; |
---|
2516 | sym_index += GCC_SYMINC (symbol); |
---|
2517 | |
---|
2518 | if (GCC_OK_SYMBOL (symbol)) |
---|
2519 | { |
---|
2520 | char *name; |
---|
2521 | |
---|
2522 | if ((name = ldgetname (ldptr, &symbol)) == NULL) |
---|
2523 | continue; /* should never happen */ |
---|
2524 | |
---|
2525 | #ifdef XCOFF_DEBUGGING_INFO |
---|
2526 | /* All AIX function names have a duplicate entry beginning |
---|
2527 | with a dot. */ |
---|
2528 | if (*name == '.') |
---|
2529 | ++name; |
---|
2530 | #endif |
---|
2531 | |
---|
2532 | switch (is_ctor_dtor (name)) |
---|
2533 | { |
---|
2534 | case 1: |
---|
2535 | add_to_list (&constructors, name); |
---|
2536 | if (which_pass == PASS_OBJ) |
---|
2537 | add_to_list (&exports, name); |
---|
2538 | break; |
---|
2539 | |
---|
2540 | case 2: |
---|
2541 | add_to_list (&destructors, name); |
---|
2542 | if (which_pass == PASS_OBJ) |
---|
2543 | add_to_list (&exports, name); |
---|
2544 | break; |
---|
2545 | |
---|
2546 | default: /* not a constructor or destructor */ |
---|
2547 | continue; |
---|
2548 | } |
---|
2549 | |
---|
2550 | #if !defined(EXTENDED_COFF) |
---|
2551 | if (debug) |
---|
2552 | fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n", |
---|
2553 | symbol.n_scnum, symbol.n_sclass, |
---|
2554 | (symbol.n_type ? "0" : ""), symbol.n_type, |
---|
2555 | name); |
---|
2556 | #else |
---|
2557 | if (debug) |
---|
2558 | fprintf (stderr, "\tiss = %5d, value = %5d, index = %5d, name = %s\n", |
---|
2559 | symbol.iss, symbol.value, symbol.index, name); |
---|
2560 | #endif |
---|
2561 | } |
---|
2562 | } |
---|
2563 | } |
---|
2564 | |
---|
2565 | (void) ldclose(ldptr); |
---|
2566 | } |
---|
2567 | |
---|
2568 | #ifdef XCOFF_SCAN_LIBS |
---|
2569 | /* Scan imported AIX libraries for GCC static ctors and dtors. |
---|
2570 | FIXME: it is possible to link an executable without the actual import |
---|
2571 | library by using an "import file" - a text file listing symbols |
---|
2572 | exported by a library. To support this, we would have to scan |
---|
2573 | import files as well as actual shared binaries to find GCC ctors. |
---|
2574 | TODO: use memory mapping instead of 'ld' routines, files are already |
---|
2575 | memory mapped, but we could eliminate the extra in-memory copies. |
---|
2576 | Is it worth the effort? */ |
---|
2577 | |
---|
2578 | static void |
---|
2579 | scan_libraries (prog_name) |
---|
2580 | char *prog_name; |
---|
2581 | { |
---|
2582 | LDFILE *ldptr; |
---|
2583 | SCNHDR ldsh; |
---|
2584 | static struct path_prefix libpath; /* we should only do this once */ |
---|
2585 | |
---|
2586 | if ((ldptr = ldopen (prog_name, ldptr)) == NULL) |
---|
2587 | fatal ("%s: can't open as COFF file", prog_name); |
---|
2588 | |
---|
2589 | if (!MY_ISCOFF (HEADER (ldptr).f_magic)) |
---|
2590 | fatal ("%s: not a COFF file", prog_name); |
---|
2591 | |
---|
2592 | /* find and read loader section */ |
---|
2593 | if (ldnshread (ldptr, _LOADER, &ldsh)) |
---|
2594 | { |
---|
2595 | LDHDR ldh; |
---|
2596 | char *impbuf; |
---|
2597 | int entry; |
---|
2598 | |
---|
2599 | FSEEK (ldptr, ldsh.s_scnptr, BEGINNING); |
---|
2600 | FREAD (&ldh, sizeof (ldh), 1, ldptr); |
---|
2601 | /* read import library list */ |
---|
2602 | impbuf = alloca (ldh.l_istlen); |
---|
2603 | FSEEK (ldptr, ldh.l_impoff + ldsh.s_scnptr, BEGINNING); |
---|
2604 | FREAD (impbuf, ldh.l_istlen, 1, ldptr); |
---|
2605 | |
---|
2606 | if (debug) |
---|
2607 | fprintf (stderr, "LIBPATH=%s\n", impbuf); |
---|
2608 | prefix_from_string (impbuf, &libpath); |
---|
2609 | |
---|
2610 | /* skip LIBPATH and empty base and member fields */ |
---|
2611 | impbuf += strlen (impbuf) + 3; |
---|
2612 | for (entry = 1; entry < ldh.l_nimpid; ++entry) |
---|
2613 | { |
---|
2614 | char *impath = impbuf; |
---|
2615 | char *implib = impath + strlen (impath) + 1; |
---|
2616 | char *impmem = implib + strlen (implib) + 1; |
---|
2617 | char *soname = NULL; |
---|
2618 | char *trial; |
---|
2619 | int pathlen; |
---|
2620 | LDFILE *libptr = NULL; |
---|
2621 | struct prefix_list *pl; |
---|
2622 | ARCHDR ah; |
---|
2623 | |
---|
2624 | impbuf = impmem + strlen (impmem) + 1; |
---|
2625 | if (debug) |
---|
2626 | fprintf (stderr, "PATH+BASE=%s%s\n", impath, implib); |
---|
2627 | /* Skip AIX kernel exports */ |
---|
2628 | if (*impath == '/' && *(impath+1) == '\0' |
---|
2629 | && strcmp (implib, "unix") == 0) |
---|
2630 | continue; |
---|
2631 | pathlen = strlen (impath); |
---|
2632 | trial = alloca (MAX (pathlen + 1, libpath.max_len) |
---|
2633 | + strlen (implib) + 1); |
---|
2634 | if (*impath) |
---|
2635 | { |
---|
2636 | strcpy (trial, impath); |
---|
2637 | if (impath[pathlen - 1] != '/') |
---|
2638 | trial[pathlen++] = '/'; |
---|
2639 | strcpy (trial + pathlen, implib); |
---|
2640 | if (access (trial, R_OK) == 0) |
---|
2641 | soname = trial; |
---|
2642 | } |
---|
2643 | else |
---|
2644 | for (pl = libpath.plist; pl; pl = pl->next) |
---|
2645 | { |
---|
2646 | strcpy (trial, pl->prefix); |
---|
2647 | strcat (trial, implib); |
---|
2648 | if (access (trial, R_OK) == 0) |
---|
2649 | { |
---|
2650 | soname = trial; |
---|
2651 | break; |
---|
2652 | } |
---|
2653 | } |
---|
2654 | |
---|
2655 | if (! soname) |
---|
2656 | fatal ("%s: library not found", implib); |
---|
2657 | if (debug) |
---|
2658 | if (*impmem) |
---|
2659 | fprintf (stderr, "%s (%s)\n", soname, impmem); |
---|
2660 | else |
---|
2661 | fprintf (stderr, "%s\n", soname); |
---|
2662 | |
---|
2663 | do |
---|
2664 | { |
---|
2665 | /* scan imported shared objects for GCC GLOBAL ctors */ |
---|
2666 | short type; |
---|
2667 | if ((libptr = ldopen (soname, libptr)) == NULL) |
---|
2668 | fatal ("%s: can't open import library", soname); |
---|
2669 | if (TYPE (libptr) == ARTYPE) |
---|
2670 | { |
---|
2671 | LDFILE *memptr; |
---|
2672 | if (! *impmem) |
---|
2673 | fatal ("%s: no archive member specified", soname); |
---|
2674 | ldahread (libptr, &ah); |
---|
2675 | if (strcmp (ah.ar_name, impmem)) |
---|
2676 | continue; |
---|
2677 | } |
---|
2678 | type = HEADER (libptr).f_magic; |
---|
2679 | if (HEADER (libptr).f_flags & F_SHROBJ) |
---|
2680 | { |
---|
2681 | SCNHDR soldsh; |
---|
2682 | LDHDR soldh; |
---|
2683 | long symcnt, i; |
---|
2684 | char *ldstrings; |
---|
2685 | LDSYM *lsyms; |
---|
2686 | if (!ldnshread (libptr, _LOADER, &soldsh)) |
---|
2687 | fatal ("%s: not an import library", soname); |
---|
2688 | FSEEK (libptr, soldsh.s_scnptr, BEGINNING); |
---|
2689 | if (FREAD (&soldh, sizeof (soldh), 1, libptr) != 1) |
---|
2690 | fatal ("%s: can't read loader section", soname); |
---|
2691 | /*fprintf (stderr, "\tscanning %s\n", soname);*/ |
---|
2692 | symcnt = soldh.l_nsyms; |
---|
2693 | lsyms = (LDSYM*) alloca (symcnt * sizeof (*lsyms)); |
---|
2694 | symcnt = FREAD (lsyms, sizeof (*lsyms), symcnt, libptr); |
---|
2695 | ldstrings = alloca (soldh.l_stlen); |
---|
2696 | FSEEK (libptr, soldsh.s_scnptr+soldh.l_stoff, BEGINNING); |
---|
2697 | FREAD (ldstrings, soldh.l_stlen, 1, libptr); |
---|
2698 | for (i = 0; i < symcnt; ++i) |
---|
2699 | { |
---|
2700 | LDSYM *l = lsyms + i; |
---|
2701 | if (LDR_EXPORT (*l)) |
---|
2702 | { |
---|
2703 | char *expname = 0; |
---|
2704 | if (l->l_zeroes) |
---|
2705 | expname = l->l_name; |
---|
2706 | else if (l->l_offset < soldh.l_stlen) |
---|
2707 | expname = ldstrings + l->l_offset; |
---|
2708 | switch (is_ctor_dtor (expname)) |
---|
2709 | { |
---|
2710 | case 3: |
---|
2711 | if (debug) |
---|
2712 | fprintf (stderr, "\t%s\n", expname); |
---|
2713 | add_to_list (&constructors, expname); |
---|
2714 | break; |
---|
2715 | |
---|
2716 | case 4: |
---|
2717 | add_to_list (&destructors, expname); |
---|
2718 | break; |
---|
2719 | |
---|
2720 | default: /* not a constructor or destructor */ |
---|
2721 | continue; |
---|
2722 | } |
---|
2723 | } |
---|
2724 | } |
---|
2725 | } |
---|
2726 | else |
---|
2727 | fprintf (stderr, "%s: type = %04X flags = %04X\n", |
---|
2728 | ah.ar_name, type, HEADER (libptr).f_flags); |
---|
2729 | } |
---|
2730 | while (ldclose (libptr) == FAILURE); |
---|
2731 | /* printf (stderr, "closed %s\n", soname); */ |
---|
2732 | } |
---|
2733 | } |
---|
2734 | } |
---|
2735 | #endif /* XCOFF_SCAN_LIBS */ |
---|
2736 | |
---|
2737 | #endif /* OBJECT_FORMAT_COFF */ |
---|
2738 | |
---|
2739 | |
---|
2740 | /* |
---|
2741 | * OSF/rose specific stuff. |
---|
2742 | */ |
---|
2743 | |
---|
2744 | #ifdef OBJECT_FORMAT_ROSE |
---|
2745 | |
---|
2746 | /* Union of the various load commands */ |
---|
2747 | |
---|
2748 | typedef union load_union |
---|
2749 | { |
---|
2750 | ldc_header_t hdr; /* common header */ |
---|
2751 | load_cmd_map_command_t map; /* map indexing other load cmds */ |
---|
2752 | interpreter_command_t iprtr; /* interpreter pathname */ |
---|
2753 | strings_command_t str; /* load commands strings section */ |
---|
2754 | region_command_t region; /* region load command */ |
---|
2755 | reloc_command_t reloc; /* relocation section */ |
---|
2756 | package_command_t pkg; /* package load command */ |
---|
2757 | symbols_command_t sym; /* symbol sections */ |
---|
2758 | entry_command_t ent; /* program start section */ |
---|
2759 | gen_info_command_t info; /* object information */ |
---|
2760 | func_table_command_t func; /* function constructors/destructors */ |
---|
2761 | } load_union_t; |
---|
2762 | |
---|
2763 | /* Structure to point to load command and data section in memory. */ |
---|
2764 | |
---|
2765 | typedef struct load_all |
---|
2766 | { |
---|
2767 | load_union_t *load; /* load command */ |
---|
2768 | char *section; /* pointer to section */ |
---|
2769 | } load_all_t; |
---|
2770 | |
---|
2771 | /* Structure to contain information about a file mapped into memory. */ |
---|
2772 | |
---|
2773 | struct file_info |
---|
2774 | { |
---|
2775 | char *start; /* start of map */ |
---|
2776 | char *name; /* filename */ |
---|
2777 | long size; /* size of the file */ |
---|
2778 | long rounded_size; /* size rounded to page boundary */ |
---|
2779 | int fd; /* file descriptor */ |
---|
2780 | int rw; /* != 0 if opened read/write */ |
---|
2781 | int use_mmap; /* != 0 if mmap'ed */ |
---|
2782 | }; |
---|
2783 | |
---|
2784 | extern int decode_mach_o_hdr (); |
---|
2785 | extern int encode_mach_o_hdr (); |
---|
2786 | |
---|
2787 | static void add_func_table PROTO((mo_header_t *, load_all_t *, |
---|
2788 | symbol_info_t *, int)); |
---|
2789 | static void print_header PROTO((mo_header_t *)); |
---|
2790 | static void print_load_command PROTO((load_union_t*, size_t, int)); |
---|
2791 | static void bad_header PROTO((int)); |
---|
2792 | static struct file_info *read_file PROTO((char *, int, int)); |
---|
2793 | static void end_file PROTO((struct file_info *)); |
---|
2794 | |
---|
2795 | /* OSF/rose specific version to scan the name list of the loaded |
---|
2796 | program for the symbols g++ uses for static constructors and |
---|
2797 | destructors. |
---|
2798 | |
---|
2799 | The constructor table begins at __CTOR_LIST__ and contains a count |
---|
2800 | of the number of pointers (or -1 if the constructors are built in a |
---|
2801 | separate section by the linker), followed by the pointers to the |
---|
2802 | constructor functions, terminated with a null pointer. The |
---|
2803 | destructor table has the same format, and begins at __DTOR_LIST__. */ |
---|
2804 | |
---|
2805 | static void |
---|
2806 | scan_prog_file (prog_name, which_pass) |
---|
2807 | char *prog_name; |
---|
2808 | enum pass which_pass; |
---|
2809 | { |
---|
2810 | char *obj; |
---|
2811 | mo_header_t hdr; |
---|
2812 | load_all_t *load_array; |
---|
2813 | load_all_t *load_end; |
---|
2814 | load_all_t *load_cmd; |
---|
2815 | int symbol_load_cmds; |
---|
2816 | off_t offset; |
---|
2817 | int i; |
---|
2818 | int num_syms; |
---|
2819 | int status; |
---|
2820 | char *str_sect; |
---|
2821 | struct file_info *obj_file; |
---|
2822 | int prog_fd; |
---|
2823 | mo_lcid_t cmd_strings = -1; |
---|
2824 | symbol_info_t *main_sym = 0; |
---|
2825 | int rw = (which_pass != PASS_FIRST); |
---|
2826 | |
---|
2827 | prog_fd = open (prog_name, (rw) ? O_RDWR : O_RDONLY); |
---|
2828 | if (prog_fd < 0) |
---|
2829 | fatal_perror ("can't read %s", prog_name); |
---|
2830 | |
---|
2831 | obj_file = read_file (prog_name, prog_fd, rw); |
---|
2832 | obj = obj_file->start; |
---|
2833 | |
---|
2834 | status = decode_mach_o_hdr (obj, MO_SIZEOF_RAW_HDR, MOH_HEADER_VERSION, &hdr); |
---|
2835 | if (status != MO_HDR_CONV_SUCCESS) |
---|
2836 | bad_header (status); |
---|
2837 | |
---|
2838 | |
---|
2839 | /* Do some basic sanity checks. Note we explicitly use the big endian magic number, |
---|
2840 | since the hardware will automatically swap bytes for us on loading little endian |
---|
2841 | integers. */ |
---|
2842 | |
---|
2843 | #ifndef CROSS_COMPILE |
---|
2844 | if (hdr.moh_magic != MOH_MAGIC_MSB |
---|
2845 | || hdr.moh_header_version != MOH_HEADER_VERSION |
---|
2846 | || hdr.moh_byte_order != OUR_BYTE_ORDER |
---|
2847 | || hdr.moh_data_rep_id != OUR_DATA_REP_ID |
---|
2848 | || hdr.moh_cpu_type != OUR_CPU_TYPE |
---|
2849 | || hdr.moh_cpu_subtype != OUR_CPU_SUBTYPE |
---|
2850 | || hdr.moh_vendor_type != OUR_VENDOR_TYPE) |
---|
2851 | { |
---|
2852 | fatal ("incompatibilities between object file & expected values"); |
---|
2853 | } |
---|
2854 | #endif |
---|
2855 | |
---|
2856 | if (debug) |
---|
2857 | print_header (&hdr); |
---|
2858 | |
---|
2859 | offset = hdr.moh_first_cmd_off; |
---|
2860 | load_end = load_array |
---|
2861 | = (load_all_t *) xcalloc (sizeof (load_all_t), hdr.moh_n_load_cmds + 2); |
---|
2862 | |
---|
2863 | /* Build array of load commands, calculating the offsets */ |
---|
2864 | for (i = 0; i < hdr.moh_n_load_cmds; i++) |
---|
2865 | { |
---|
2866 | load_union_t *load_hdr; /* load command header */ |
---|
2867 | |
---|
2868 | load_cmd = load_end++; |
---|
2869 | load_hdr = (load_union_t *) (obj + offset); |
---|
2870 | |
---|
2871 | /* If modifying the program file, copy the header. */ |
---|
2872 | if (rw) |
---|
2873 | { |
---|
2874 | load_union_t *ptr = (load_union_t *) xmalloc (load_hdr->hdr.ldci_cmd_size); |
---|
2875 | bcopy ((char *)load_hdr, (char *)ptr, load_hdr->hdr.ldci_cmd_size); |
---|
2876 | load_hdr = ptr; |
---|
2877 | |
---|
2878 | /* null out old command map, because we will rewrite at the end. */ |
---|
2879 | if (ptr->hdr.ldci_cmd_type == LDC_CMD_MAP) |
---|
2880 | { |
---|
2881 | cmd_strings = ptr->map.lcm_ld_cmd_strings; |
---|
2882 | ptr->hdr.ldci_cmd_type = LDC_UNDEFINED; |
---|
2883 | } |
---|
2884 | } |
---|
2885 | |
---|
2886 | load_cmd->load = load_hdr; |
---|
2887 | if (load_hdr->hdr.ldci_section_off > 0) |
---|
2888 | load_cmd->section = obj + load_hdr->hdr.ldci_section_off; |
---|
2889 | |
---|
2890 | if (debug) |
---|
2891 | print_load_command (load_hdr, offset, i); |
---|
2892 | |
---|
2893 | offset += load_hdr->hdr.ldci_cmd_size; |
---|
2894 | } |
---|
2895 | |
---|
2896 | /* If the last command is the load command map and is not undefined, |
---|
2897 | decrement the count of load commands. */ |
---|
2898 | if (rw && load_end[-1].load->hdr.ldci_cmd_type == LDC_UNDEFINED) |
---|
2899 | { |
---|
2900 | load_end--; |
---|
2901 | hdr.moh_n_load_cmds--; |
---|
2902 | } |
---|
2903 | |
---|
2904 | /* Go through and process each symbol table section. */ |
---|
2905 | symbol_load_cmds = 0; |
---|
2906 | for (load_cmd = load_array; load_cmd < load_end; load_cmd++) |
---|
2907 | { |
---|
2908 | load_union_t *load_hdr = load_cmd->load; |
---|
2909 | |
---|
2910 | if (load_hdr->hdr.ldci_cmd_type == LDC_SYMBOLS) |
---|
2911 | { |
---|
2912 | symbol_load_cmds++; |
---|
2913 | |
---|
2914 | if (debug) |
---|
2915 | { |
---|
2916 | char *kind = "unknown"; |
---|
2917 | |
---|
2918 | switch (load_hdr->sym.symc_kind) |
---|
2919 | { |
---|
2920 | case SYMC_IMPORTS: kind = "imports"; break; |
---|
2921 | case SYMC_DEFINED_SYMBOLS: kind = "defined"; break; |
---|
2922 | case SYMC_STABS: kind = "stabs"; break; |
---|
2923 | } |
---|
2924 | |
---|
2925 | fprintf (stderr, "\nProcessing symbol table #%d, offset = 0x%.8lx, kind = %s\n", |
---|
2926 | symbol_load_cmds, load_hdr->hdr.ldci_section_off, kind); |
---|
2927 | } |
---|
2928 | |
---|
2929 | if (load_hdr->sym.symc_kind != SYMC_DEFINED_SYMBOLS) |
---|
2930 | continue; |
---|
2931 | |
---|
2932 | str_sect = load_array[load_hdr->sym.symc_strings_section].section; |
---|
2933 | if (str_sect == (char *)0) |
---|
2934 | fatal ("string section missing"); |
---|
2935 | |
---|
2936 | if (load_cmd->section == (char *)0) |
---|
2937 | fatal ("section pointer missing"); |
---|
2938 | |
---|
2939 | num_syms = load_hdr->sym.symc_nentries; |
---|
2940 | for (i = 0; i < num_syms; i++) |
---|
2941 | { |
---|
2942 | symbol_info_t *sym = ((symbol_info_t *) load_cmd->section) + i; |
---|
2943 | char *name = sym->si_name.symbol_name + str_sect; |
---|
2944 | |
---|
2945 | if (name[0] != '_') |
---|
2946 | continue; |
---|
2947 | |
---|
2948 | if (rw) |
---|
2949 | { |
---|
2950 | char *n = name + strlen (name) - strlen (NAME__MAIN); |
---|
2951 | |
---|
2952 | if ((n - name) < 0 || strcmp (n, NAME__MAIN)) |
---|
2953 | continue; |
---|
2954 | while (n != name) |
---|
2955 | if (*--n != '_') |
---|
2956 | continue; |
---|
2957 | |
---|
2958 | main_sym = sym; |
---|
2959 | } |
---|
2960 | else |
---|
2961 | { |
---|
2962 | switch (is_ctor_dtor (name)) |
---|
2963 | { |
---|
2964 | case 1: |
---|
2965 | add_to_list (&constructors, name); |
---|
2966 | break; |
---|
2967 | |
---|
2968 | case 2: |
---|
2969 | add_to_list (&destructors, name); |
---|
2970 | break; |
---|
2971 | |
---|
2972 | default: /* not a constructor or destructor */ |
---|
2973 | continue; |
---|
2974 | } |
---|
2975 | } |
---|
2976 | |
---|
2977 | if (debug) |
---|
2978 | fprintf (stderr, "\ttype = 0x%.4x, sc = 0x%.2x, flags = 0x%.8x, name = %.30s\n", |
---|
2979 | sym->si_type, sym->si_sc_type, sym->si_flags, name); |
---|
2980 | } |
---|
2981 | } |
---|
2982 | } |
---|
2983 | |
---|
2984 | if (symbol_load_cmds == 0) |
---|
2985 | fatal ("no symbol table found"); |
---|
2986 | |
---|
2987 | /* Update the program file now, rewrite header and load commands. At present, |
---|
2988 | we assume that there is enough space after the last load command to insert |
---|
2989 | one more. Since the first section written out is page aligned, and the |
---|
2990 | number of load commands is small, this is ok for the present. */ |
---|
2991 | |
---|
2992 | if (rw) |
---|
2993 | { |
---|
2994 | load_union_t *load_map; |
---|
2995 | size_t size; |
---|
2996 | |
---|
2997 | if (cmd_strings == -1) |
---|
2998 | fatal ("no cmd_strings found"); |
---|
2999 | |
---|
3000 | /* Add __main to initializer list. |
---|
3001 | If we are building a program instead of a shared library, don't |
---|
3002 | do anything, since in the current version, you cannot do mallocs |
---|
3003 | and such in the constructors. */ |
---|
3004 | |
---|
3005 | if (main_sym != (symbol_info_t *)0 |
---|
3006 | && ((hdr.moh_flags & MOH_EXECABLE_F) == 0)) |
---|
3007 | add_func_table (&hdr, load_array, main_sym, FNTC_INITIALIZATION); |
---|
3008 | |
---|
3009 | if (debug) |
---|
3010 | fprintf (stderr, "\nUpdating header and load commands.\n\n"); |
---|
3011 | |
---|
3012 | hdr.moh_n_load_cmds++; |
---|
3013 | size = sizeof (load_cmd_map_command_t) + (sizeof (mo_offset_t) * (hdr.moh_n_load_cmds - 1)); |
---|
3014 | |
---|
3015 | /* Create new load command map. */ |
---|
3016 | if (debug) |
---|
3017 | fprintf (stderr, "load command map, %d cmds, new size %ld.\n", |
---|
3018 | (int)hdr.moh_n_load_cmds, (long)size); |
---|
3019 | |
---|
3020 | load_map = (load_union_t *) xcalloc (1, size); |
---|
3021 | load_map->map.ldc_header.ldci_cmd_type = LDC_CMD_MAP; |
---|
3022 | load_map->map.ldc_header.ldci_cmd_size = size; |
---|
3023 | load_map->map.lcm_ld_cmd_strings = cmd_strings; |
---|
3024 | load_map->map.lcm_nentries = hdr.moh_n_load_cmds; |
---|
3025 | load_array[hdr.moh_n_load_cmds-1].load = load_map; |
---|
3026 | |
---|
3027 | offset = hdr.moh_first_cmd_off; |
---|
3028 | for (i = 0; i < hdr.moh_n_load_cmds; i++) |
---|
3029 | { |
---|
3030 | load_map->map.lcm_map[i] = offset; |
---|
3031 | if (load_array[i].load->hdr.ldci_cmd_type == LDC_CMD_MAP) |
---|
3032 | hdr.moh_load_map_cmd_off = offset; |
---|
3033 | |
---|
3034 | offset += load_array[i].load->hdr.ldci_cmd_size; |
---|
3035 | } |
---|
3036 | |
---|
3037 | hdr.moh_sizeofcmds = offset - MO_SIZEOF_RAW_HDR; |
---|
3038 | |
---|
3039 | if (debug) |
---|
3040 | print_header (&hdr); |
---|
3041 | |
---|
3042 | /* Write header */ |
---|
3043 | status = encode_mach_o_hdr (&hdr, obj, MO_SIZEOF_RAW_HDR); |
---|
3044 | if (status != MO_HDR_CONV_SUCCESS) |
---|
3045 | bad_header (status); |
---|
3046 | |
---|
3047 | if (debug) |
---|
3048 | fprintf (stderr, "writing load commands.\n\n"); |
---|
3049 | |
---|
3050 | /* Write load commands */ |
---|
3051 | offset = hdr.moh_first_cmd_off; |
---|
3052 | for (i = 0; i < hdr.moh_n_load_cmds; i++) |
---|
3053 | { |
---|
3054 | load_union_t *load_hdr = load_array[i].load; |
---|
3055 | size_t size = load_hdr->hdr.ldci_cmd_size; |
---|
3056 | |
---|
3057 | if (debug) |
---|
3058 | print_load_command (load_hdr, offset, i); |
---|
3059 | |
---|
3060 | bcopy ((char *)load_hdr, (char *)(obj + offset), size); |
---|
3061 | offset += size; |
---|
3062 | } |
---|
3063 | } |
---|
3064 | |
---|
3065 | end_file (obj_file); |
---|
3066 | |
---|
3067 | if (close (prog_fd)) |
---|
3068 | fatal_perror ("closing %s", prog_name); |
---|
3069 | |
---|
3070 | if (debug) |
---|
3071 | fprintf (stderr, "\n"); |
---|
3072 | } |
---|
3073 | |
---|
3074 | |
---|
3075 | /* Add a function table to the load commands to call a function |
---|
3076 | on initiation or termination of the process. */ |
---|
3077 | |
---|
3078 | static void |
---|
3079 | add_func_table (hdr_p, load_array, sym, type) |
---|
3080 | mo_header_t *hdr_p; /* pointer to global header */ |
---|
3081 | load_all_t *load_array; /* array of ptrs to load cmds */ |
---|
3082 | symbol_info_t *sym; /* pointer to symbol entry */ |
---|
3083 | int type; /* fntc_type value */ |
---|
3084 | { |
---|
3085 | /* Add a new load command. */ |
---|
3086 | int num_cmds = ++hdr_p->moh_n_load_cmds; |
---|
3087 | int load_index = num_cmds - 1; |
---|
3088 | size_t size = sizeof (func_table_command_t) + sizeof (mo_addr_t); |
---|
3089 | load_union_t *ptr = xcalloc (1, size); |
---|
3090 | load_all_t *load_cmd; |
---|
3091 | int i; |
---|
3092 | |
---|
3093 | /* Set the unresolved address bit in the header to force the loader to be |
---|
3094 | used, since kernel exec does not call the initialization functions. */ |
---|
3095 | hdr_p->moh_flags |= MOH_UNRESOLVED_F; |
---|
3096 | |
---|
3097 | load_cmd = &load_array[load_index]; |
---|
3098 | load_cmd->load = ptr; |
---|
3099 | load_cmd->section = (char *)0; |
---|
3100 | |
---|
3101 | /* Fill in func table load command. */ |
---|
3102 | ptr->func.ldc_header.ldci_cmd_type = LDC_FUNC_TABLE; |
---|
3103 | ptr->func.ldc_header.ldci_cmd_size = size; |
---|
3104 | ptr->func.ldc_header.ldci_section_off = 0; |
---|
3105 | ptr->func.ldc_header.ldci_section_len = 0; |
---|
3106 | ptr->func.fntc_type = type; |
---|
3107 | ptr->func.fntc_nentries = 1; |
---|
3108 | |
---|
3109 | /* copy address, turn it from abs. address to (region,offset) if necessary. */ |
---|
3110 | /* Is the symbol already expressed as (region, offset)? */ |
---|
3111 | if ((sym->si_flags & SI_ABSOLUTE_VALUE_F) == 0) |
---|
3112 | { |
---|
3113 | ptr->func.fntc_entry_loc[i].adr_lcid = sym->si_value.def_val.adr_lcid; |
---|
3114 | ptr->func.fntc_entry_loc[i].adr_sctoff = sym->si_value.def_val.adr_sctoff; |
---|
3115 | } |
---|
3116 | |
---|
3117 | /* If not, figure out which region it's in. */ |
---|
3118 | else |
---|
3119 | { |
---|
3120 | mo_vm_addr_t addr = sym->si_value.abs_val; |
---|
3121 | int found = 0; |
---|
3122 | |
---|
3123 | for (i = 0; i < load_index; i++) |
---|
3124 | { |
---|
3125 | if (load_array[i].load->hdr.ldci_cmd_type == LDC_REGION) |
---|
3126 | { |
---|
3127 | region_command_t *region_ptr = &load_array[i].load->region; |
---|
3128 | |
---|
3129 | if ((region_ptr->regc_flags & REG_ABS_ADDR_F) != 0 |
---|
3130 | && addr >= region_ptr->regc_addr.vm_addr |
---|
3131 | && addr <= region_ptr->regc_addr.vm_addr + region_ptr->regc_vm_size) |
---|
3132 | { |
---|
3133 | ptr->func.fntc_entry_loc[0].adr_lcid = i; |
---|
3134 | ptr->func.fntc_entry_loc[0].adr_sctoff = addr - region_ptr->regc_addr.vm_addr; |
---|
3135 | found++; |
---|
3136 | break; |
---|
3137 | } |
---|
3138 | } |
---|
3139 | } |
---|
3140 | |
---|
3141 | if (!found) |
---|
3142 | fatal ("could not convert 0x%l.8x into a region", addr); |
---|
3143 | } |
---|
3144 | |
---|
3145 | if (debug) |
---|
3146 | fprintf (stderr, |
---|
3147 | "%s function, region %d, offset = %ld (0x%.8lx)\n", |
---|
3148 | (type == FNTC_INITIALIZATION) ? "init" : "term", |
---|
3149 | (int)ptr->func.fntc_entry_loc[i].adr_lcid, |
---|
3150 | (long)ptr->func.fntc_entry_loc[i].adr_sctoff, |
---|
3151 | (long)ptr->func.fntc_entry_loc[i].adr_sctoff); |
---|
3152 | |
---|
3153 | } |
---|
3154 | |
---|
3155 | |
---|
3156 | /* Print the global header for an OSF/rose object. */ |
---|
3157 | |
---|
3158 | static void |
---|
3159 | print_header (hdr_ptr) |
---|
3160 | mo_header_t *hdr_ptr; |
---|
3161 | { |
---|
3162 | fprintf (stderr, "\nglobal header:\n"); |
---|
3163 | fprintf (stderr, "\tmoh_magic = 0x%.8lx\n", hdr_ptr->moh_magic); |
---|
3164 | fprintf (stderr, "\tmoh_major_version = %d\n", (int)hdr_ptr->moh_major_version); |
---|
3165 | fprintf (stderr, "\tmoh_minor_version = %d\n", (int)hdr_ptr->moh_minor_version); |
---|
3166 | fprintf (stderr, "\tmoh_header_version = %d\n", (int)hdr_ptr->moh_header_version); |
---|
3167 | fprintf (stderr, "\tmoh_max_page_size = %d\n", (int)hdr_ptr->moh_max_page_size); |
---|
3168 | fprintf (stderr, "\tmoh_byte_order = %d\n", (int)hdr_ptr->moh_byte_order); |
---|
3169 | fprintf (stderr, "\tmoh_data_rep_id = %d\n", (int)hdr_ptr->moh_data_rep_id); |
---|
3170 | fprintf (stderr, "\tmoh_cpu_type = %d\n", (int)hdr_ptr->moh_cpu_type); |
---|
3171 | fprintf (stderr, "\tmoh_cpu_subtype = %d\n", (int)hdr_ptr->moh_cpu_subtype); |
---|
3172 | fprintf (stderr, "\tmoh_vendor_type = %d\n", (int)hdr_ptr->moh_vendor_type); |
---|
3173 | fprintf (stderr, "\tmoh_load_map_cmd_off = %d\n", (int)hdr_ptr->moh_load_map_cmd_off); |
---|
3174 | fprintf (stderr, "\tmoh_first_cmd_off = %d\n", (int)hdr_ptr->moh_first_cmd_off); |
---|
3175 | fprintf (stderr, "\tmoh_sizeofcmds = %d\n", (int)hdr_ptr->moh_sizeofcmds); |
---|
3176 | fprintf (stderr, "\tmon_n_load_cmds = %d\n", (int)hdr_ptr->moh_n_load_cmds); |
---|
3177 | fprintf (stderr, "\tmoh_flags = 0x%.8lx", (long)hdr_ptr->moh_flags); |
---|
3178 | |
---|
3179 | if (hdr_ptr->moh_flags & MOH_RELOCATABLE_F) |
---|
3180 | fprintf (stderr, ", relocatable"); |
---|
3181 | |
---|
3182 | if (hdr_ptr->moh_flags & MOH_LINKABLE_F) |
---|
3183 | fprintf (stderr, ", linkable"); |
---|
3184 | |
---|
3185 | if (hdr_ptr->moh_flags & MOH_EXECABLE_F) |
---|
3186 | fprintf (stderr, ", execable"); |
---|
3187 | |
---|
3188 | if (hdr_ptr->moh_flags & MOH_EXECUTABLE_F) |
---|
3189 | fprintf (stderr, ", executable"); |
---|
3190 | |
---|
3191 | if (hdr_ptr->moh_flags & MOH_UNRESOLVED_F) |
---|
3192 | fprintf (stderr, ", unresolved"); |
---|
3193 | |
---|
3194 | fprintf (stderr, "\n\n"); |
---|
3195 | return; |
---|
3196 | } |
---|
3197 | |
---|
3198 | |
---|
3199 | /* Print a short summary of a load command. */ |
---|
3200 | |
---|
3201 | static void |
---|
3202 | print_load_command (load_hdr, offset, number) |
---|
3203 | load_union_t *load_hdr; |
---|
3204 | size_t offset; |
---|
3205 | int number; |
---|
3206 | { |
---|
3207 | mo_long_t type = load_hdr->hdr.ldci_cmd_type; |
---|
3208 | char *type_str = (char *)0; |
---|
3209 | |
---|
3210 | switch (type) |
---|
3211 | { |
---|
3212 | case LDC_UNDEFINED: type_str = "UNDEFINED"; break; |
---|
3213 | case LDC_CMD_MAP: type_str = "CMD_MAP"; break; |
---|
3214 | case LDC_INTERPRETER: type_str = "INTERPRETER"; break; |
---|
3215 | case LDC_STRINGS: type_str = "STRINGS"; break; |
---|
3216 | case LDC_REGION: type_str = "REGION"; break; |
---|
3217 | case LDC_RELOC: type_str = "RELOC"; break; |
---|
3218 | case LDC_PACKAGE: type_str = "PACKAGE"; break; |
---|
3219 | case LDC_SYMBOLS: type_str = "SYMBOLS"; break; |
---|
3220 | case LDC_ENTRY: type_str = "ENTRY"; break; |
---|
3221 | case LDC_FUNC_TABLE: type_str = "FUNC_TABLE"; break; |
---|
3222 | case LDC_GEN_INFO: type_str = "GEN_INFO"; break; |
---|
3223 | } |
---|
3224 | |
---|
3225 | fprintf (stderr, |
---|
3226 | "cmd %2d, sz: 0x%.2lx, coff: 0x%.3lx, doff: 0x%.6lx, dlen: 0x%.6lx", |
---|
3227 | number, |
---|
3228 | (long) load_hdr->hdr.ldci_cmd_size, |
---|
3229 | (long) offset, |
---|
3230 | (long) load_hdr->hdr.ldci_section_off, |
---|
3231 | (long) load_hdr->hdr.ldci_section_len); |
---|
3232 | |
---|
3233 | if (type_str == (char *)0) |
---|
3234 | fprintf (stderr, ", ty: unknown (%ld)\n", (long) type); |
---|
3235 | |
---|
3236 | else if (type != LDC_REGION) |
---|
3237 | fprintf (stderr, ", ty: %s\n", type_str); |
---|
3238 | |
---|
3239 | else |
---|
3240 | { |
---|
3241 | char *region = ""; |
---|
3242 | switch (load_hdr->region.regc_usage_type) |
---|
3243 | { |
---|
3244 | case REG_TEXT_T: region = ", .text"; break; |
---|
3245 | case REG_DATA_T: region = ", .data"; break; |
---|
3246 | case REG_BSS_T: region = ", .bss"; break; |
---|
3247 | case REG_GLUE_T: region = ", .glue"; break; |
---|
3248 | #if defined (REG_RDATA_T) && defined (REG_SDATA_T) && defined (REG_SBSS_T) /*mips*/ |
---|
3249 | case REG_RDATA_T: region = ", .rdata"; break; |
---|
3250 | case REG_SDATA_T: region = ", .sdata"; break; |
---|
3251 | case REG_SBSS_T: region = ", .sbss"; break; |
---|
3252 | #endif |
---|
3253 | } |
---|
3254 | |
---|
3255 | fprintf (stderr, ", ty: %s, vaddr: 0x%.8lx, vlen: 0x%.6lx%s\n", |
---|
3256 | type_str, |
---|
3257 | (long) load_hdr->region.regc_vm_addr, |
---|
3258 | (long) load_hdr->region.regc_vm_size, |
---|
3259 | region); |
---|
3260 | } |
---|
3261 | |
---|
3262 | return; |
---|
3263 | } |
---|
3264 | |
---|
3265 | |
---|
3266 | /* Fatal error when {en,de}code_mach_o_header fails. */ |
---|
3267 | |
---|
3268 | static void |
---|
3269 | bad_header (status) |
---|
3270 | int status; |
---|
3271 | { |
---|
3272 | char *msg = (char *)0; |
---|
3273 | |
---|
3274 | switch (status) |
---|
3275 | { |
---|
3276 | case MO_ERROR_BAD_MAGIC: msg = "bad magic number"; break; |
---|
3277 | case MO_ERROR_BAD_HDR_VERS: msg = "bad header version"; break; |
---|
3278 | case MO_ERROR_BAD_RAW_HDR_VERS: msg = "bad raw header version"; break; |
---|
3279 | case MO_ERROR_BUF2SML: msg = "raw header buffer too small"; break; |
---|
3280 | case MO_ERROR_OLD_RAW_HDR_FILE: msg = "old raw header file"; break; |
---|
3281 | case MO_ERROR_UNSUPPORTED_VERS: msg = "unsupported version"; break; |
---|
3282 | } |
---|
3283 | |
---|
3284 | if (msg == (char *)0) |
---|
3285 | fatal ("unknown {de,en}code_mach_o_hdr return value %d", status); |
---|
3286 | else |
---|
3287 | fatal ("%s", msg); |
---|
3288 | } |
---|
3289 | |
---|
3290 | |
---|
3291 | /* Read a file into a memory buffer. */ |
---|
3292 | |
---|
3293 | static struct file_info * |
---|
3294 | read_file (name, fd, rw) |
---|
3295 | char *name; /* filename */ |
---|
3296 | int fd; /* file descriptor */ |
---|
3297 | int rw; /* read/write */ |
---|
3298 | { |
---|
3299 | struct stat stat_pkt; |
---|
3300 | struct file_info *p = (struct file_info *) xcalloc (sizeof (struct file_info), 1); |
---|
3301 | #ifdef USE_MMAP |
---|
3302 | static int page_size; |
---|
3303 | #endif |
---|
3304 | |
---|
3305 | if (fstat (fd, &stat_pkt) < 0) |
---|
3306 | fatal_perror ("fstat %s", name); |
---|
3307 | |
---|
3308 | p->name = name; |
---|
3309 | p->size = stat_pkt.st_size; |
---|
3310 | p->rounded_size = stat_pkt.st_size; |
---|
3311 | p->fd = fd; |
---|
3312 | p->rw = rw; |
---|
3313 | |
---|
3314 | #ifdef USE_MMAP |
---|
3315 | if (debug) |
---|
3316 | fprintf (stderr, "mmap %s, %s\n", name, (rw) ? "read/write" : "read-only"); |
---|
3317 | |
---|
3318 | if (page_size == 0) |
---|
3319 | page_size = sysconf (_SC_PAGE_SIZE); |
---|
3320 | |
---|
3321 | p->rounded_size = ((p->size + page_size - 1) / page_size) * page_size; |
---|
3322 | p->start = mmap ((caddr_t)0, |
---|
3323 | (rw) ? p->rounded_size : p->size, |
---|
3324 | (rw) ? (PROT_READ | PROT_WRITE) : PROT_READ, |
---|
3325 | MAP_FILE | MAP_VARIABLE | MAP_SHARED, |
---|
3326 | fd, |
---|
3327 | 0L); |
---|
3328 | |
---|
3329 | if (p->start != (char *)0 && p->start != (char *)-1) |
---|
3330 | p->use_mmap = 1; |
---|
3331 | |
---|
3332 | else |
---|
3333 | #endif /* USE_MMAP */ |
---|
3334 | { |
---|
3335 | long len; |
---|
3336 | |
---|
3337 | if (debug) |
---|
3338 | fprintf (stderr, "read %s\n", name); |
---|
3339 | |
---|
3340 | p->use_mmap = 0; |
---|
3341 | p->start = xmalloc (p->size); |
---|
3342 | if (lseek (fd, 0L, SEEK_SET) < 0) |
---|
3343 | fatal_perror ("lseek to 0 on %s", name); |
---|
3344 | |
---|
3345 | len = read (fd, p->start, p->size); |
---|
3346 | if (len < 0) |
---|
3347 | fatal_perror ("read %s", name); |
---|
3348 | |
---|
3349 | if (len != p->size) |
---|
3350 | fatal ("read %ld bytes, expected %ld, from %s", len, p->size, name); |
---|
3351 | } |
---|
3352 | |
---|
3353 | return p; |
---|
3354 | } |
---|
3355 | |
---|
3356 | /* Do anything necessary to write a file back from memory. */ |
---|
3357 | |
---|
3358 | static void |
---|
3359 | end_file (ptr) |
---|
3360 | struct file_info *ptr; /* file information block */ |
---|
3361 | { |
---|
3362 | #ifdef USE_MMAP |
---|
3363 | if (ptr->use_mmap) |
---|
3364 | { |
---|
3365 | if (ptr->rw) |
---|
3366 | { |
---|
3367 | if (debug) |
---|
3368 | fprintf (stderr, "msync %s\n", ptr->name); |
---|
3369 | |
---|
3370 | if (msync (ptr->start, ptr->rounded_size, MS_ASYNC)) |
---|
3371 | fatal_perror ("msync %s", ptr->name); |
---|
3372 | } |
---|
3373 | |
---|
3374 | if (debug) |
---|
3375 | fprintf (stderr, "munmap %s\n", ptr->name); |
---|
3376 | |
---|
3377 | if (munmap (ptr->start, ptr->size)) |
---|
3378 | fatal_perror ("munmap %s", ptr->name); |
---|
3379 | } |
---|
3380 | else |
---|
3381 | #endif /* USE_MMAP */ |
---|
3382 | { |
---|
3383 | if (ptr->rw) |
---|
3384 | { |
---|
3385 | long len; |
---|
3386 | |
---|
3387 | if (debug) |
---|
3388 | fprintf (stderr, "write %s\n", ptr->name); |
---|
3389 | |
---|
3390 | if (lseek (ptr->fd, 0L, SEEK_SET) < 0) |
---|
3391 | fatal_perror ("lseek to 0 on %s", ptr->name); |
---|
3392 | |
---|
3393 | len = write (ptr->fd, ptr->start, ptr->size); |
---|
3394 | if (len < 0) |
---|
3395 | fatal_perror ("write %s", ptr->name); |
---|
3396 | |
---|
3397 | if (len != ptr->size) |
---|
3398 | fatal ("wrote %ld bytes, expected %ld, to %s", len, ptr->size, ptr->name); |
---|
3399 | } |
---|
3400 | |
---|
3401 | free (ptr->start); |
---|
3402 | } |
---|
3403 | |
---|
3404 | free (ptr); |
---|
3405 | } |
---|
3406 | |
---|
3407 | #endif /* OBJECT_FORMAT_ROSE */ |
---|