Mercurial > hg > CbC > CbC_gcc
annotate gcc/collect2.c @ 128:fe568345ddd5
fix CbC-example
| author | mir3636 |
|---|---|
| date | Wed, 11 Apr 2018 19:32:28 +0900 |
| parents | 04ced10e8804 |
| children | 84e7813d76e9 |
| rev | line source |
|---|---|
| 0 | 1 /* Collect static initialization info into data structures that can be |
| 2 traversed by C++ initialization and finalization routines. | |
| 111 | 3 Copyright (C) 1992-2017 Free Software Foundation, Inc. |
| 0 | 4 Contributed by Chris Smith (csmith@convex.com). |
| 5 Heavily modified by Michael Meissner (meissner@cygnus.com), | |
| 6 Per Bothner (bothner@cygnus.com), and John Gilmore (gnu@cygnus.com). | |
| 7 | |
| 8 This file is part of GCC. | |
| 9 | |
| 10 GCC is free software; you can redistribute it and/or modify it under | |
| 11 the terms of the GNU General Public License as published by the Free | |
| 12 Software Foundation; either version 3, or (at your option) any later | |
| 13 version. | |
| 14 | |
| 15 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 16 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 18 for more details. | |
| 19 | |
| 20 You should have received a copy of the GNU General Public License | |
| 21 along with GCC; see the file COPYING3. If not see | |
| 22 <http://www.gnu.org/licenses/>. */ | |
| 23 | |
| 24 | |
| 25 /* Build tables of static constructors and destructors and run ld. */ | |
| 26 | |
| 27 #include "config.h" | |
| 28 #include "system.h" | |
| 29 #include "coretypes.h" | |
| 30 #include "tm.h" | |
| 111 | 31 #include "filenames.h" |
| 32 #include "file-find.h" | |
| 0 | 33 |
|
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34 /* TARGET_64BIT may be defined to use driver specific functionality. */ |
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35 #undef TARGET_64BIT |
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36 #define TARGET_64BIT TARGET_64BIT_DEFAULT |
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37 |
| 0 | 38 #ifndef LIBRARY_PATH_ENV |
| 39 #define LIBRARY_PATH_ENV "LIBRARY_PATH" | |
| 40 #endif | |
| 41 | |
| 42 #define COLLECT | |
| 43 | |
| 44 #include "collect2.h" | |
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45 #include "collect2-aix.h" |
| 111 | 46 #include "collect-utils.h" |
| 47 #include "diagnostic.h" | |
| 0 | 48 #include "demangle.h" |
| 49 #include "obstack.h" | |
| 50 #include "intl.h" | |
| 51 #include "version.h" | |
| 52 | |
| 53 /* On certain systems, we have code that works by scanning the object file | |
| 54 directly. But this code uses system-specific header files and library | |
| 55 functions, so turn it off in a cross-compiler. Likewise, the names of | |
| 56 the utilities are not correct for a cross-compiler; we have to hope that | |
| 57 cross-versions are in the proper directories. */ | |
| 58 | |
| 59 #ifdef CROSS_DIRECTORY_STRUCTURE | |
|
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60 #ifndef CROSS_AIX_SUPPORT |
| 0 | 61 #undef OBJECT_FORMAT_COFF |
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62 #endif |
| 0 | 63 #undef MD_EXEC_PREFIX |
| 64 #undef REAL_LD_FILE_NAME | |
| 65 #undef REAL_NM_FILE_NAME | |
| 66 #undef REAL_STRIP_FILE_NAME | |
| 67 #endif | |
| 68 | |
| 69 /* If we cannot use a special method, use the ordinary one: | |
| 70 run nm to find what symbols are present. | |
| 71 In a cross-compiler, this means you need a cross nm, | |
| 72 but that is not quite as unpleasant as special headers. */ | |
| 73 | |
| 74 #if !defined (OBJECT_FORMAT_COFF) | |
| 75 #define OBJECT_FORMAT_NONE | |
| 76 #endif | |
| 77 | |
| 78 #ifdef OBJECT_FORMAT_COFF | |
| 79 | |
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80 #ifndef CROSS_DIRECTORY_STRUCTURE |
| 0 | 81 #include <a.out.h> |
| 82 #include <ar.h> | |
| 83 | |
| 84 #ifdef UMAX | |
| 85 #include <sgs.h> | |
| 86 #endif | |
| 87 | |
| 88 /* Many versions of ldfcn.h define these. */ | |
| 89 #ifdef FREAD | |
| 90 #undef FREAD | |
| 91 #undef FWRITE | |
| 92 #endif | |
| 93 | |
| 94 #include <ldfcn.h> | |
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95 #endif |
| 0 | 96 |
| 97 /* Some systems have an ISCOFF macro, but others do not. In some cases | |
| 98 the macro may be wrong. MY_ISCOFF is defined in tm.h files for machines | |
| 99 that either do not have an ISCOFF macro in /usr/include or for those | |
| 100 where it is wrong. */ | |
| 101 | |
| 102 #ifndef MY_ISCOFF | |
| 103 #define MY_ISCOFF(X) ISCOFF (X) | |
| 104 #endif | |
| 105 | |
| 106 #endif /* OBJECT_FORMAT_COFF */ | |
| 107 | |
| 108 #ifdef OBJECT_FORMAT_NONE | |
| 109 | |
| 110 /* Default flags to pass to nm. */ | |
| 111 #ifndef NM_FLAGS | |
| 112 #define NM_FLAGS "-n" | |
| 113 #endif | |
| 114 | |
| 115 #endif /* OBJECT_FORMAT_NONE */ | |
| 116 | |
| 117 /* Some systems use __main in a way incompatible with its use in gcc, in these | |
| 118 cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to | |
| 119 give the same symbol without quotes for an alternative entry point. */ | |
| 120 #ifndef NAME__MAIN | |
| 121 #define NAME__MAIN "__main" | |
| 122 #endif | |
| 123 | |
| 124 /* This must match tree.h. */ | |
| 125 #define DEFAULT_INIT_PRIORITY 65535 | |
| 126 | |
| 127 #ifndef COLLECT_SHARED_INIT_FUNC | |
| 128 #define COLLECT_SHARED_INIT_FUNC(STREAM, FUNC) \ | |
| 129 fprintf ((STREAM), "void _GLOBAL__DI() {\n\t%s();\n}\n", (FUNC)) | |
| 130 #endif | |
| 131 #ifndef COLLECT_SHARED_FINI_FUNC | |
| 132 #define COLLECT_SHARED_FINI_FUNC(STREAM, FUNC) \ | |
| 133 fprintf ((STREAM), "void _GLOBAL__DD() {\n\t%s();\n}\n", (FUNC)) | |
| 134 #endif | |
| 135 | |
| 136 #ifdef LDD_SUFFIX | |
| 137 #define SCAN_LIBRARIES | |
| 138 #endif | |
| 139 | |
| 140 #ifndef SHLIB_SUFFIX | |
| 141 #define SHLIB_SUFFIX ".so" | |
| 142 #endif | |
| 143 | |
| 144 #ifdef USE_COLLECT2 | |
| 145 int do_collecting = 1; | |
| 146 #else | |
| 147 int do_collecting = 0; | |
| 148 #endif | |
| 149 | |
|
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150 /* Cook up an always defined indication of whether we proceed the |
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151 "EXPORT_LIST" way. */ |
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152 |
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153 #ifdef COLLECT_EXPORT_LIST |
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154 #define DO_COLLECT_EXPORT_LIST 1 |
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155 #else |
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156 #define DO_COLLECT_EXPORT_LIST 0 |
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157 #endif |
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158 |
| 0 | 159 /* Nonzero if we should suppress the automatic demangling of identifiers |
| 160 in linker error messages. Set from COLLECT_NO_DEMANGLE. */ | |
| 161 int no_demangle; | |
| 162 | |
| 163 /* Linked lists of constructor and destructor names. */ | |
| 164 | |
| 165 struct id | |
| 166 { | |
| 167 struct id *next; | |
| 168 int sequence; | |
| 169 char name[1]; | |
| 170 }; | |
| 171 | |
| 172 struct head | |
| 173 { | |
| 174 struct id *first; | |
| 175 struct id *last; | |
| 176 int number; | |
| 177 }; | |
| 178 | |
| 179 static int rflag; /* true if -r */ | |
| 180 static int strip_flag; /* true if -s */ | |
| 181 #ifdef COLLECT_EXPORT_LIST | |
| 182 static int export_flag; /* true if -bE */ | |
| 183 static int aix64_flag; /* true if -b64 */ | |
| 184 static int aixrtl_flag; /* true if -brtl */ | |
| 111 | 185 static int aixlazy_flag; /* true if -blazy */ |
| 0 | 186 #endif |
| 187 | |
|
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188 enum lto_mode_d { |
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189 LTO_MODE_NONE, /* Not doing LTO. */ |
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190 LTO_MODE_LTO, /* Normal LTO. */ |
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191 LTO_MODE_WHOPR /* WHOPR. */ |
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192 }; |
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193 |
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194 /* Current LTO mode. */ |
| 111 | 195 #ifdef ENABLE_LTO |
| 196 static enum lto_mode_d lto_mode = LTO_MODE_WHOPR; | |
| 197 #else | |
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198 static enum lto_mode_d lto_mode = LTO_MODE_NONE; |
| 111 | 199 #endif |
| 200 | |
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201 bool helpflag; /* true if --help */ |
| 0 | 202 |
| 203 static int shared_obj; /* true if -shared */ | |
| 204 | |
| 205 static const char *c_file; /* <xxx>.c for constructor/destructor list. */ | |
| 206 static const char *o_file; /* <xxx>.o for constructor/destructor list. */ | |
| 207 #ifdef COLLECT_EXPORT_LIST | |
| 208 static const char *export_file; /* <xxx>.x for AIX export list. */ | |
| 209 #endif | |
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210 static char **lto_o_files; /* Output files for LTO. */ |
| 0 | 211 const char *ldout; /* File for ld stdout. */ |
| 212 const char *lderrout; /* File for ld stderr. */ | |
| 213 static const char *output_file; /* Output file for ld. */ | |
| 214 static const char *nm_file_name; /* pathname of nm */ | |
| 215 #ifdef LDD_SUFFIX | |
| 216 static const char *ldd_file_name; /* pathname of ldd (or equivalent) */ | |
| 217 #endif | |
| 218 static const char *strip_file_name; /* pathname of strip */ | |
| 219 const char *c_file_name; /* pathname of gcc */ | |
| 220 static char *initname, *fininame; /* names of init and fini funcs */ | |
| 221 | |
| 111 | 222 |
| 223 #ifdef TARGET_AIX_VERSION | |
| 224 static char *aix_shared_initname; | |
| 225 static char *aix_shared_fininame; /* init/fini names as per the scheme | |
| 226 described in config/rs6000/aix.h */ | |
| 227 #endif | |
| 228 | |
| 0 | 229 static struct head constructors; /* list of constructors found */ |
| 230 static struct head destructors; /* list of destructors found */ | |
| 231 #ifdef COLLECT_EXPORT_LIST | |
| 232 static struct head exports; /* list of exported symbols */ | |
| 233 #endif | |
| 234 static struct head frame_tables; /* list of frame unwind info tables */ | |
| 235 | |
| 111 | 236 bool at_file_supplied; /* Whether to use @file arguments */ |
| 0 | 237 |
| 238 struct obstack temporary_obstack; | |
| 239 char * temporary_firstobj; | |
| 240 | |
|
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241 /* A string that must be prepended to a target OS path in order to find |
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242 it on the host system. */ |
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243 #ifdef TARGET_SYSTEM_ROOT |
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244 static const char *target_system_root = TARGET_SYSTEM_ROOT; |
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245 #else |
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246 static const char *target_system_root = ""; |
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247 #endif |
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248 |
| 111 | 249 /* Whether we may unlink the output file, which should be set as soon as we |
| 250 know we have successfully produced it. This is typically useful to prevent | |
| 251 blindly attempting to unlink a read-only output that the target linker | |
| 252 would leave untouched. */ | |
| 253 bool may_unlink_output_file = false; | |
| 0 | 254 |
| 255 #ifdef COLLECT_EXPORT_LIST | |
| 256 /* Lists to keep libraries to be scanned for global constructors/destructors. */ | |
| 257 static struct head libs; /* list of libraries */ | |
| 258 static struct path_prefix cmdline_lib_dirs; /* directories specified with -L */ | |
| 259 static struct path_prefix libpath_lib_dirs; /* directories in LIBPATH */ | |
| 260 static struct path_prefix *libpaths[3] = {&cmdline_lib_dirs, | |
| 261 &libpath_lib_dirs, NULL}; | |
| 262 #endif | |
| 263 | |
|
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264 /* List of names of object files containing LTO information. |
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265 These are a subset of the object file names appearing on the |
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266 command line, and must be identical, in the sense of pointer |
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267 equality, with the names passed to maybe_run_lto_and_relink(). */ |
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268 |
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269 struct lto_object |
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270 { |
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271 const char *name; /* Name of object file. */ |
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272 struct lto_object *next; /* Next in linked list. */ |
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273 }; |
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274 |
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275 struct lto_object_list |
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276 { |
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277 struct lto_object *first; /* First list element. */ |
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278 struct lto_object *last; /* Last list element. */ |
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279 }; |
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280 |
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281 static struct lto_object_list lto_objects; |
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282 |
| 0 | 283 /* Special kinds of symbols that a name may denote. */ |
| 284 | |
| 111 | 285 enum symkind { |
| 0 | 286 SYM_REGULAR = 0, /* nothing special */ |
| 287 | |
| 288 SYM_CTOR = 1, /* constructor */ | |
| 289 SYM_DTOR = 2, /* destructor */ | |
| 290 SYM_INIT = 3, /* shared object routine that calls all the ctors */ | |
| 291 SYM_FINI = 4, /* shared object routine that calls all the dtors */ | |
| 111 | 292 SYM_DWEH = 5, /* DWARF exception handling table */ |
| 293 SYM_AIXI = 6, | |
| 294 SYM_AIXD = 7 | |
| 295 }; | |
| 296 | |
| 297 const char tool_name[] = "collect2"; | |
| 0 | 298 |
| 299 static symkind is_ctor_dtor (const char *); | |
| 300 | |
| 301 static void handler (int); | |
|
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302 static void maybe_unlink_list (char **); |
| 0 | 303 static void add_to_list (struct head *, const char *); |
| 304 static int extract_init_priority (const char *); | |
| 305 static void sort_ids (struct head *); | |
| 306 static void write_list (FILE *, const char *, struct id *); | |
| 307 #ifdef COLLECT_EXPORT_LIST | |
| 308 static void dump_list (FILE *, const char *, struct id *); | |
| 309 #endif | |
| 310 #if 0 | |
| 311 static void dump_prefix_list (FILE *, const char *, struct prefix_list *); | |
| 312 #endif | |
| 313 static void write_list_with_asm (FILE *, const char *, struct id *); | |
| 314 static void write_c_file (FILE *, const char *); | |
| 315 static void write_c_file_stat (FILE *, const char *); | |
| 316 #ifndef LD_INIT_SWITCH | |
| 317 static void write_c_file_glob (FILE *, const char *); | |
| 318 #endif | |
| 319 #ifdef SCAN_LIBRARIES | |
| 320 static void scan_libraries (const char *); | |
| 321 #endif | |
| 322 #ifdef COLLECT_EXPORT_LIST | |
| 323 #if 0 | |
| 324 static int is_in_list (const char *, struct id *); | |
| 325 #endif | |
| 326 static void write_aix_file (FILE *, struct id *); | |
| 327 static char *resolve_lib_name (const char *); | |
| 328 #endif | |
| 329 static char *extract_string (const char **); | |
|
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330 static void post_ld_pass (bool); |
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331 static void process_args (int *argcp, char **argv); |
|
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332 |
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333 /* Enumerations describing which pass this is for scanning the |
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334 program file ... */ |
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335 |
| 111 | 336 enum scanpass { |
|
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337 PASS_FIRST, /* without constructors */ |
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338 PASS_OBJ, /* individual objects */ |
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339 PASS_LIB, /* looking for shared libraries */ |
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340 PASS_SECOND, /* with constructors linked in */ |
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341 PASS_LTOINFO /* looking for objects with LTO info */ |
| 111 | 342 }; |
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343 |
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344 /* ... and which kinds of symbols are to be considered. */ |
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345 |
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346 enum scanfilter_masks { |
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347 SCAN_NOTHING = 0, |
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348 |
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349 SCAN_CTOR = 1 << SYM_CTOR, |
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350 SCAN_DTOR = 1 << SYM_DTOR, |
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351 SCAN_INIT = 1 << SYM_INIT, |
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352 SCAN_FINI = 1 << SYM_FINI, |
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353 SCAN_DWEH = 1 << SYM_DWEH, |
| 111 | 354 SCAN_AIXI = 1 << SYM_AIXI, |
| 355 SCAN_AIXD = 1 << SYM_AIXD, | |
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356 SCAN_ALL = ~0 |
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357 }; |
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358 |
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359 /* This type is used for parameters and variables which hold |
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360 combinations of the flags in enum scanfilter_masks. */ |
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361 typedef int scanfilter; |
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362 |
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363 /* Scan the name list of the loaded program for the symbols g++ uses for |
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364 static constructors and destructors. |
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365 |
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366 The SCANPASS argument tells which collect processing pass this is for and |
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367 the SCANFILTER argument tells which kinds of symbols to consider in this |
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368 pass. Symbols of a special kind not in the filter mask are considered as |
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369 regular ones. |
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370 |
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371 The constructor table begins at __CTOR_LIST__ and contains a count of the |
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372 number of pointers (or -1 if the constructors are built in a separate |
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373 section by the linker), followed by the pointers to the constructor |
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374 functions, terminated with a null pointer. The destructor table has the |
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375 same format, and begins at __DTOR_LIST__. */ |
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376 |
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377 static void scan_prog_file (const char *, scanpass, scanfilter); |
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378 |
| 0 | 379 |
| 380 /* Delete tempfiles and exit function. */ | |
| 381 | |
| 382 void | |
| 111 | 383 tool_cleanup (bool from_signal) |
| 0 | 384 { |
| 385 if (c_file != 0 && c_file[0]) | |
| 386 maybe_unlink (c_file); | |
| 387 | |
| 388 if (o_file != 0 && o_file[0]) | |
| 389 maybe_unlink (o_file); | |
| 390 | |
| 391 #ifdef COLLECT_EXPORT_LIST | |
| 392 if (export_file != 0 && export_file[0]) | |
| 393 maybe_unlink (export_file); | |
| 394 #endif | |
| 395 | |
|
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396 if (lto_o_files) |
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397 maybe_unlink_list (lto_o_files); |
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398 |
| 0 | 399 if (ldout != 0 && ldout[0]) |
| 400 { | |
| 111 | 401 if (!from_signal) |
| 402 dump_ld_file (ldout, stdout); | |
| 0 | 403 maybe_unlink (ldout); |
| 404 } | |
| 405 | |
| 406 if (lderrout != 0 && lderrout[0]) | |
| 407 { | |
| 111 | 408 if (!from_signal) |
| 409 dump_ld_file (lderrout, stderr); | |
| 0 | 410 maybe_unlink (lderrout); |
| 411 } | |
| 111 | 412 } |
| 413 | |
| 414 static void | |
| 415 collect_atexit (void) | |
| 416 { | |
| 417 tool_cleanup (false); | |
| 0 | 418 } |
| 419 | |
| 111 | 420 static void |
| 421 handler (int signo) | |
| 0 | 422 { |
| 111 | 423 tool_cleanup (true); |
| 424 | |
| 425 signal (signo, SIG_DFL); | |
| 426 raise (signo); | |
| 0 | 427 } |
|
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428 /* Notify user of a non-error, without translating the format string. */ |
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429 void |
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430 notice_translated (const char *cmsgid, ...) |
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431 { |
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432 va_list ap; |
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433 |
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434 va_start (ap, cmsgid); |
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435 vfprintf (stderr, cmsgid, ap); |
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436 va_end (ap); |
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437 } |
| 0 | 438 |
| 439 int | |
| 440 file_exists (const char *name) | |
| 441 { | |
| 442 return access (name, R_OK) == 0; | |
| 443 } | |
| 444 | |
| 445 /* Parse a reasonable subset of shell quoting syntax. */ | |
| 446 | |
| 447 static char * | |
| 448 extract_string (const char **pp) | |
| 449 { | |
| 450 const char *p = *pp; | |
| 451 int backquote = 0; | |
| 452 int inside = 0; | |
| 453 | |
| 454 for (;;) | |
| 455 { | |
| 456 char c = *p; | |
| 457 if (c == '\0') | |
| 458 break; | |
| 459 ++p; | |
| 460 if (backquote) | |
| 461 obstack_1grow (&temporary_obstack, c); | |
| 462 else if (! inside && c == ' ') | |
| 463 break; | |
| 464 else if (! inside && c == '\\') | |
| 465 backquote = 1; | |
| 466 else if (c == '\'') | |
| 467 inside = !inside; | |
| 468 else | |
| 469 obstack_1grow (&temporary_obstack, c); | |
| 470 } | |
| 471 | |
| 472 obstack_1grow (&temporary_obstack, '\0'); | |
| 473 *pp = p; | |
| 474 return XOBFINISH (&temporary_obstack, char *); | |
| 475 } | |
| 476 | |
| 477 void | |
| 111 | 478 dump_ld_file (const char *name, FILE *to) |
| 0 | 479 { |
| 480 FILE *stream = fopen (name, "r"); | |
| 481 | |
| 482 if (stream == 0) | |
| 483 return; | |
| 484 while (1) | |
| 485 { | |
| 486 int c; | |
| 487 while (c = getc (stream), | |
| 488 c != EOF && (ISIDNUM (c) || c == '$' || c == '.')) | |
| 489 obstack_1grow (&temporary_obstack, c); | |
| 490 if (obstack_object_size (&temporary_obstack) > 0) | |
| 491 { | |
| 492 const char *word, *p; | |
| 493 char *result; | |
| 494 obstack_1grow (&temporary_obstack, '\0'); | |
| 495 word = XOBFINISH (&temporary_obstack, const char *); | |
| 496 | |
| 497 if (*word == '.') | |
| 498 ++word, putc ('.', to); | |
| 499 p = word; | |
| 500 if (!strncmp (p, USER_LABEL_PREFIX, strlen (USER_LABEL_PREFIX))) | |
| 501 p += strlen (USER_LABEL_PREFIX); | |
| 502 | |
| 503 #ifdef HAVE_LD_DEMANGLE | |
| 504 result = 0; | |
| 505 #else | |
| 506 if (no_demangle) | |
| 507 result = 0; | |
| 508 else | |
| 509 result = cplus_demangle (p, DMGL_PARAMS | DMGL_ANSI | DMGL_VERBOSE); | |
| 510 #endif | |
| 511 | |
| 512 if (result) | |
| 513 { | |
| 514 int diff; | |
| 515 fputs (result, to); | |
| 516 | |
| 517 diff = strlen (word) - strlen (result); | |
| 518 while (diff > 0 && c == ' ') | |
| 519 --diff, putc (' ', to); | |
| 520 if (diff < 0 && c == ' ') | |
| 521 { | |
| 522 while (diff < 0 && c == ' ') | |
| 523 ++diff, c = getc (stream); | |
| 524 if (!ISSPACE (c)) | |
| 525 { | |
| 526 /* Make sure we output at least one space, or | |
| 527 the demangled symbol name will run into | |
| 528 whatever text follows. */ | |
| 529 putc (' ', to); | |
| 530 } | |
| 531 } | |
| 532 | |
| 533 free (result); | |
| 534 } | |
| 535 else | |
| 536 fputs (word, to); | |
| 537 | |
| 538 fflush (to); | |
| 539 obstack_free (&temporary_obstack, temporary_firstobj); | |
| 540 } | |
| 541 if (c == EOF) | |
| 542 break; | |
| 543 putc (c, to); | |
| 544 } | |
| 545 fclose (stream); | |
| 546 } | |
| 547 | |
| 548 /* Return the kind of symbol denoted by name S. */ | |
| 549 | |
| 550 static symkind | |
| 551 is_ctor_dtor (const char *s) | |
| 552 { | |
|
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553 struct names { const char *const name; const int len; symkind ret; |
| 0 | 554 const int two_underscores; }; |
| 555 | |
| 556 const struct names *p; | |
| 557 int ch; | |
| 558 const char *orig_s = s; | |
| 559 | |
| 560 static const struct names special[] = { | |
| 561 #ifndef NO_DOLLAR_IN_LABEL | |
| 562 { "GLOBAL__I$", sizeof ("GLOBAL__I$")-1, SYM_CTOR, 0 }, | |
| 563 { "GLOBAL__D$", sizeof ("GLOBAL__D$")-1, SYM_DTOR, 0 }, | |
| 564 #else | |
| 565 #ifndef NO_DOT_IN_LABEL | |
| 566 { "GLOBAL__I.", sizeof ("GLOBAL__I.")-1, SYM_CTOR, 0 }, | |
| 567 { "GLOBAL__D.", sizeof ("GLOBAL__D.")-1, SYM_DTOR, 0 }, | |
| 568 #endif /* NO_DOT_IN_LABEL */ | |
| 569 #endif /* NO_DOLLAR_IN_LABEL */ | |
| 570 { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, SYM_CTOR, 0 }, | |
| 571 { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, SYM_DTOR, 0 }, | |
| 572 { "GLOBAL__F_", sizeof ("GLOBAL__F_")-1, SYM_DWEH, 0 }, | |
| 573 { "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, SYM_INIT, 0 }, | |
| 574 { "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, SYM_FINI, 0 }, | |
| 111 | 575 #ifdef TARGET_AIX_VERSION |
| 576 { "GLOBAL__AIXI_", sizeof ("GLOBAL__AIXI_")-1, SYM_AIXI, 0 }, | |
| 577 { "GLOBAL__AIXD_", sizeof ("GLOBAL__AIXD_")-1, SYM_AIXD, 0 }, | |
| 578 #endif | |
| 0 | 579 { NULL, 0, SYM_REGULAR, 0 } |
| 580 }; | |
| 581 | |
| 582 while ((ch = *s) == '_') | |
| 583 ++s; | |
| 584 | |
| 585 if (s == orig_s) | |
| 586 return SYM_REGULAR; | |
| 587 | |
| 588 for (p = &special[0]; p->len > 0; p++) | |
| 589 { | |
| 590 if (ch == p->name[0] | |
| 591 && (!p->two_underscores || ((s - orig_s) >= 2)) | |
| 111 | 592 && strncmp (s, p->name, p->len) == 0) |
| 0 | 593 { |
| 594 return p->ret; | |
| 595 } | |
| 596 } | |
| 597 return SYM_REGULAR; | |
| 598 } | |
| 599 | |
| 600 /* We maintain two prefix lists: one from COMPILER_PATH environment variable | |
| 601 and one from the PATH variable. */ | |
| 602 | |
| 603 static struct path_prefix cpath, path; | |
| 604 | |
| 605 #ifdef CROSS_DIRECTORY_STRUCTURE | |
| 606 /* This is the name of the target machine. We use it to form the name | |
| 607 of the files to execute. */ | |
| 608 | |
| 609 static const char *const target_machine = TARGET_MACHINE; | |
| 610 #endif | |
| 611 | |
| 612 /* Search for NAME using prefix list PPREFIX. We only look for executable | |
| 613 files. | |
| 614 | |
| 615 Return 0 if not found, otherwise return its name, allocated with malloc. */ | |
| 616 | |
|
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617 #ifdef OBJECT_FORMAT_NONE |
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618 |
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619 /* Add an entry for the object file NAME to object file list LIST. |
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620 New entries are added at the end of the list. The original pointer |
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621 value of NAME is preserved, i.e., no string copy is performed. */ |
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622 |
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623 static void |
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624 add_lto_object (struct lto_object_list *list, const char *name) |
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625 { |
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626 struct lto_object *n = XNEW (struct lto_object); |
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627 n->name = name; |
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628 n->next = NULL; |
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629 |
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630 if (list->last) |
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631 list->last->next = n; |
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632 else |
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633 list->first = n; |
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634 |
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635 list->last = n; |
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636 } |
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637 #endif /* OBJECT_FORMAT_NONE */ |
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638 |
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639 |
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640 /* Perform a link-time recompilation and relink if any of the object |
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641 files contain LTO info. The linker command line LTO_LD_ARGV |
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642 represents the linker command that would produce a final executable |
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643 without the use of LTO. OBJECT_LST is a vector of object file names |
| 111 | 644 appearing in LTO_LD_ARGV that are to be considered for link-time |
|
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645 recompilation, where OBJECT is a pointer to the last valid element. |
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646 (This awkward convention avoids an impedance mismatch with the |
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647 usage of similarly-named variables in main().) The elements of |
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648 OBJECT_LST must be identical, i.e., pointer equal, to the |
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649 corresponding arguments in LTO_LD_ARGV. |
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650 |
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651 Upon entry, at least one linker run has been performed without the |
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652 use of any LTO info that might be present. Any recompilations |
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653 necessary for template instantiations have been performed, and |
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654 initializer/finalizer tables have been created if needed and |
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655 included in the linker command line LTO_LD_ARGV. If any of the |
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656 object files contain LTO info, we run the LTO back end on all such |
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657 files, and perform the final link with the LTO back end output |
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658 substituted for the LTO-optimized files. In some cases, a final |
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659 link with all link-time generated code has already been performed, |
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660 so there is no need to relink if no LTO info is found. In other |
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661 cases, our caller has not produced the final executable, and is |
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662 relying on us to perform the required link whether LTO info is |
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663 present or not. In that case, the FORCE argument should be true. |
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664 Note that the linker command line argument LTO_LD_ARGV passed into |
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665 this function may be modified in place. */ |
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666 |
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667 static void |
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668 maybe_run_lto_and_relink (char **lto_ld_argv, char **object_lst, |
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669 const char **object, bool force) |
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670 { |
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671 const char **object_file = CONST_CAST2 (const char **, char **, object_lst); |
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672 |
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673 int num_lto_c_args = 1; /* Allow space for the terminating NULL. */ |
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674 |
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675 while (object_file < object) |
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676 { |
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677 /* If file contains LTO info, add it to the list of LTO objects. */ |
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678 scan_prog_file (*object_file++, PASS_LTOINFO, SCAN_ALL); |
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679 |
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680 /* Increment the argument count by the number of object file arguments |
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681 we will add. An upper bound suffices, so just count all of the |
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682 object files regardless of whether they contain LTO info. */ |
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683 num_lto_c_args++; |
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684 } |
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685 |
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686 if (lto_objects.first) |
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687 { |
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688 char **lto_c_argv; |
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689 const char **lto_c_ptr; |
|
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690 char **p; |
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691 char **lto_o_ptr; |
|
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692 struct lto_object *list; |
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693 char *lto_wrapper = getenv ("COLLECT_LTO_WRAPPER"); |
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694 struct pex_obj *pex; |
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695 const char *prog = "lto-wrapper"; |
|
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696 int lto_ld_argv_size = 0; |
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697 char **out_lto_ld_argv; |
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698 int out_lto_ld_argv_size; |
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699 size_t num_files; |
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700 |
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701 if (!lto_wrapper) |
| 111 | 702 fatal_error (input_location, "COLLECT_LTO_WRAPPER must be set"); |
|
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703 |
|
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704 num_lto_c_args++; |
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705 |
|
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706 /* There is at least one object file containing LTO info, |
|
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707 so we need to run the LTO back end and relink. |
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708 |
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709 To do so we build updated ld arguments with first |
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710 LTO object replaced by all partitions and other LTO |
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711 objects removed. */ |
|
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712 |
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713 lto_c_argv = (char **) xcalloc (sizeof (char *), num_lto_c_args); |
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714 lto_c_ptr = CONST_CAST2 (const char **, char **, lto_c_argv); |
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715 |
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716 *lto_c_ptr++ = lto_wrapper; |
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717 |
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718 /* Add LTO objects to the wrapper command line. */ |
|
77e2b8dfacca
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diff
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|
719 for (list = lto_objects.first; list; list = list->next) |
|
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diff
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|
720 *lto_c_ptr++ = list->name; |
|
77e2b8dfacca
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diff
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|
721 |
|
77e2b8dfacca
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diff
changeset
|
722 *lto_c_ptr = NULL; |
|
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diff
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|
723 |
|
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diff
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|
724 /* Run the LTO back end. */ |
| 111 | 725 pex = collect_execute (prog, lto_c_argv, NULL, NULL, PEX_SEARCH, |
| 726 at_file_supplied); | |
|
55
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|
727 { |
|
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diff
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|
728 int c; |
|
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diff
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|
729 FILE *stream; |
|
67
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|
730 size_t i; |
|
55
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diff
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|
731 char *start, *end; |
|
77e2b8dfacca
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|
732 |
|
77e2b8dfacca
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diff
changeset
|
733 stream = pex_read_output (pex, 0); |
|
77e2b8dfacca
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diff
changeset
|
734 gcc_assert (stream); |
|
77e2b8dfacca
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|
735 |
|
77e2b8dfacca
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|
736 num_files = 0; |
|
77e2b8dfacca
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|
737 while ((c = getc (stream)) != EOF) |
|
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diff
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|
738 { |
|
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update it from 4.4.3 to 4.5.0
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|
739 obstack_1grow (&temporary_obstack, c); |
|
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|
740 if (c == '\n') |
|
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|
741 ++num_files; |
|
77e2b8dfacca
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|
742 } |
|
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|
743 |
|
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|
744 lto_o_files = XNEWVEC (char *, num_files + 1); |
|
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|
745 lto_o_files[num_files] = NULL; |
|
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|
746 start = XOBFINISH (&temporary_obstack, char *); |
|
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|
747 for (i = 0; i < num_files; ++i) |
|
77e2b8dfacca
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|
748 { |
|
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update it from 4.4.3 to 4.5.0
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|
749 end = start; |
|
77e2b8dfacca
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diff
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|
750 while (*end != '\n') |
|
77e2b8dfacca
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|
751 ++end; |
|
77e2b8dfacca
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parents:
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diff
changeset
|
752 *end = '\0'; |
|
77e2b8dfacca
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diff
changeset
|
753 |
|
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parents:
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diff
changeset
|
754 lto_o_files[i] = xstrdup (start); |
|
77e2b8dfacca
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diff
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|
755 |
|
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parents:
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diff
changeset
|
756 start = end + 1; |
|
77e2b8dfacca
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parents:
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diff
changeset
|
757 } |
|
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parents:
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diff
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|
758 |
|
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diff
changeset
|
759 obstack_free (&temporary_obstack, temporary_firstobj); |
|
77e2b8dfacca
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changeset
|
760 } |
|
77e2b8dfacca
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parents:
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diff
changeset
|
761 do_wait (prog, pex); |
|
77e2b8dfacca
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changeset
|
762 pex = NULL; |
|
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|
763 |
| 111 | 764 /* Compute memory needed for new LD arguments. At most number of original arguments |
|
67
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|
765 plus number of partitions. */ |
|
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|
766 for (lto_ld_argv_size = 0; lto_ld_argv[lto_ld_argv_size]; lto_ld_argv_size++) |
|
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|
767 ; |
| 111 | 768 out_lto_ld_argv = XCNEWVEC (char *, num_files + lto_ld_argv_size + 1); |
|
67
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|
769 out_lto_ld_argv_size = 0; |
|
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|
770 |
|
55
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parents:
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diff
changeset
|
771 /* After running the LTO back end, we will relink, substituting |
|
77e2b8dfacca
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diff
changeset
|
772 the LTO output for the object files that we submitted to the |
|
77e2b8dfacca
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diff
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|
773 LTO. Here, we modify the linker command line for the relink. */ |
|
67
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|
774 |
|
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|
775 /* Copy all arguments until we find first LTO file. */ |
|
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|
776 p = lto_ld_argv; |
|
55
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changeset
|
777 while (*p != NULL) |
|
77e2b8dfacca
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|
778 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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|
779 for (list = lto_objects.first; list; list = list->next) |
|
67
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|
780 if (*p == list->name) /* Note test for pointer equality! */ |
|
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|
781 break; |
|
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|
782 if (list) |
|
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|
783 break; |
|
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|
784 out_lto_ld_argv[out_lto_ld_argv_size++] = *p++; |
|
55
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|
785 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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|
786 |
|
67
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|
787 /* Now insert all LTO partitions. */ |
|
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|
788 lto_o_ptr = lto_o_files; |
|
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|
789 while (*lto_o_ptr) |
|
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|
790 out_lto_ld_argv[out_lto_ld_argv_size++] = *lto_o_ptr++; |
|
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|
791 |
|
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|
792 /* ... and copy the rest. */ |
|
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|
793 while (*p != NULL) |
|
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|
794 { |
|
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|
795 for (list = lto_objects.first; list; list = list->next) |
|
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|
796 if (*p == list->name) /* Note test for pointer equality! */ |
|
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|
797 break; |
|
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|
798 if (!list) |
|
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|
799 out_lto_ld_argv[out_lto_ld_argv_size++] = *p; |
|
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800 p++; |
|
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801 } |
|
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|
802 out_lto_ld_argv[out_lto_ld_argv_size++] = 0; |
|
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|
803 |
|
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diff
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|
804 /* Run the linker again, this time replacing the object files |
|
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diff
changeset
|
805 optimized by the LTO with the temporary file generated by the LTO. */ |
| 111 | 806 fork_execute ("ld", out_lto_ld_argv, HAVE_GNU_LD && at_file_supplied); |
|
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|
807 post_ld_pass (true); |
|
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|
808 free (lto_ld_argv); |
|
55
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changeset
|
809 |
|
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changeset
|
810 maybe_unlink_list (lto_o_files); |
|
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|
811 } |
|
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diff
changeset
|
812 else if (force) |
|
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|
813 { |
|
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|
814 /* Our caller is relying on us to do the link |
|
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changeset
|
815 even though there is no LTO back end work to be done. */ |
| 111 | 816 fork_execute ("ld", lto_ld_argv, HAVE_GNU_LD && at_file_supplied); |
|
67
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|
817 post_ld_pass (false); |
|
55
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|
818 } |
| 111 | 819 else |
| 820 post_ld_pass (true); | |
|
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|
821 } |
| 0 | 822 |
| 823 /* Main program. */ | |
| 824 | |
| 825 int | |
| 826 main (int argc, char **argv) | |
| 827 { | |
| 111 | 828 enum linker_select |
| 829 { | |
| 830 USE_DEFAULT_LD, | |
| 831 USE_PLUGIN_LD, | |
| 832 USE_GOLD_LD, | |
| 833 USE_BFD_LD, | |
| 834 USE_LD_MAX | |
| 835 } selected_linker = USE_DEFAULT_LD; | |
| 836 static const char *const ld_suffixes[USE_LD_MAX] = | |
| 837 { | |
| 838 "ld", | |
| 839 PLUGIN_LD_SUFFIX, | |
| 840 "ld.gold", | |
| 841 "ld.bfd" | |
| 842 }; | |
| 0 | 843 static const char *const real_ld_suffix = "real-ld"; |
| 844 static const char *const collect_ld_suffix = "collect-ld"; | |
| 845 static const char *const nm_suffix = "nm"; | |
| 846 static const char *const gnm_suffix = "gnm"; | |
| 847 #ifdef LDD_SUFFIX | |
| 848 static const char *const ldd_suffix = LDD_SUFFIX; | |
| 849 #endif | |
| 850 static const char *const strip_suffix = "strip"; | |
| 851 static const char *const gstrip_suffix = "gstrip"; | |
| 852 | |
| 111 | 853 const char *full_ld_suffixes[USE_LD_MAX]; |
| 0 | 854 #ifdef CROSS_DIRECTORY_STRUCTURE |
| 855 /* If we look for a program in the compiler directories, we just use | |
| 856 the short name, since these directories are already system-specific. | |
| 857 But it we look for a program in the system directories, we need to | |
| 858 qualify the program name with the target machine. */ | |
| 859 | |
| 860 const char *const full_nm_suffix = | |
| 861 concat (target_machine, "-", nm_suffix, NULL); | |
| 862 const char *const full_gnm_suffix = | |
| 863 concat (target_machine, "-", gnm_suffix, NULL); | |
| 864 #ifdef LDD_SUFFIX | |
| 865 const char *const full_ldd_suffix = | |
| 866 concat (target_machine, "-", ldd_suffix, NULL); | |
| 867 #endif | |
| 868 const char *const full_strip_suffix = | |
| 869 concat (target_machine, "-", strip_suffix, NULL); | |
| 870 const char *const full_gstrip_suffix = | |
| 871 concat (target_machine, "-", gstrip_suffix, NULL); | |
| 872 #else | |
| 873 #ifdef LDD_SUFFIX | |
| 874 const char *const full_ldd_suffix = ldd_suffix; | |
| 875 #endif | |
| 111 | 876 const char *const full_nm_suffix = nm_suffix; |
| 877 const char *const full_gnm_suffix = gnm_suffix; | |
| 0 | 878 const char *const full_strip_suffix = strip_suffix; |
| 879 const char *const full_gstrip_suffix = gstrip_suffix; | |
| 880 #endif /* CROSS_DIRECTORY_STRUCTURE */ | |
| 881 | |
| 882 const char *arg; | |
| 883 FILE *outf; | |
| 884 #ifdef COLLECT_EXPORT_LIST | |
| 885 FILE *exportf; | |
| 886 #endif | |
| 887 const char *ld_file_name; | |
| 888 const char *p; | |
| 889 char **c_argv; | |
| 890 const char **c_ptr; | |
| 891 char **ld1_argv; | |
| 892 const char **ld1; | |
|
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893 bool use_plugin = false; |
| 111 | 894 bool use_collect_ld = false; |
|
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895 |
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896 /* The kinds of symbols we will have to consider when scanning the |
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897 outcome of a first pass link. This is ALL to start with, then might |
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898 be adjusted before getting to the first pass link per se, typically on |
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899 AIX where we perform an early scan of objects and libraries to fetch |
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900 the list of global ctors/dtors and make sure they are not garbage |
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901 collected. */ |
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902 scanfilter ld1_filter = SCAN_ALL; |
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903 |
| 0 | 904 char **ld2_argv; |
| 905 const char **ld2; | |
| 906 char **object_lst; | |
| 907 const char **object; | |
| 111 | 908 #ifdef TARGET_AIX_VERSION |
| 909 int object_nbr = argc; | |
| 910 #endif | |
| 0 | 911 int first_file; |
| 912 int num_c_args; | |
| 913 char **old_argv; | |
| 111 | 914 int i; |
| 915 | |
| 916 for (i = 0; i < USE_LD_MAX; i++) | |
| 917 full_ld_suffixes[i] | |
| 918 #ifdef CROSS_DIRECTORY_STRUCTURE | |
| 919 = concat (target_machine, "-", ld_suffixes[i], NULL); | |
| 920 #else | |
| 921 = ld_suffixes[i]; | |
| 922 #endif | |
| 923 | |
| 924 p = argv[0] + strlen (argv[0]); | |
| 925 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1])) | |
| 926 --p; | |
| 927 progname = p; | |
| 928 | |
| 929 xmalloc_set_program_name (progname); | |
| 0 | 930 |
| 931 old_argv = argv; | |
| 932 expandargv (&argc, &argv); | |
| 933 if (argv != old_argv) | |
| 934 at_file_supplied = 1; | |
| 935 | |
|
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936 process_args (&argc, argv); |
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937 |
| 0 | 938 num_c_args = argc + 9; |
| 939 | |
| 111 | 940 #ifndef HAVE_LD_DEMANGLE |
| 0 | 941 no_demangle = !! getenv ("COLLECT_NO_DEMANGLE"); |
| 942 | |
| 943 /* Suppress demangling by the real linker, which may be broken. */ | |
| 111 | 944 putenv (xstrdup ("COLLECT_NO_DEMANGLE=1")); |
| 945 #endif | |
| 0 | 946 |
| 947 #if defined (COLLECT2_HOST_INITIALIZATION) | |
| 948 /* Perform system dependent initialization, if necessary. */ | |
| 949 COLLECT2_HOST_INITIALIZATION; | |
| 950 #endif | |
| 951 | |
| 952 #ifdef SIGCHLD | |
| 953 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will | |
| 954 receive the signal. A different setting is inheritable */ | |
| 955 signal (SIGCHLD, SIG_DFL); | |
| 956 #endif | |
| 957 | |
| 958 /* Unlock the stdio streams. */ | |
| 959 unlock_std_streams (); | |
| 960 | |
| 961 gcc_init_libintl (); | |
| 962 | |
| 111 | 963 diagnostic_initialize (global_dc, 0); |
| 964 | |
| 965 if (atexit (collect_atexit) != 0) | |
| 966 fatal_error (input_location, "atexit failed"); | |
| 967 | |
| 0 | 968 /* Do not invoke xcalloc before this point, since locale needs to be |
| 969 set first, in case a diagnostic is issued. */ | |
| 970 | |
|
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971 ld1_argv = XCNEWVEC (char *, argc + 4); |
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972 ld1 = CONST_CAST2 (const char **, char **, ld1_argv); |
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973 ld2_argv = XCNEWVEC (char *, argc + 11); |
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974 ld2 = CONST_CAST2 (const char **, char **, ld2_argv); |
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975 object_lst = XCNEWVEC (char *, argc); |
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976 object = CONST_CAST2 (const char **, char **, object_lst); |
| 0 | 977 |
| 978 #ifdef DEBUG | |
| 979 debug = 1; | |
| 980 #endif | |
| 981 | |
| 982 /* Parse command line early for instances of -debug. This allows | |
| 983 the debug flag to be set before functions like find_a_file() | |
|
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984 are called. We also look for the -flto or -flto-partition=none flag to know |
|
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985 what LTO mode we are in. */ |
| 0 | 986 { |
|
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987 bool no_partition = false; |
| 0 | 988 |
| 989 for (i = 1; argv[i] != NULL; i ++) | |
| 990 { | |
| 991 if (! strcmp (argv[i], "-debug")) | |
|
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992 debug = true; |
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993 else if (! strcmp (argv[i], "-flto-partition=none")) |
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994 no_partition = true; |
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995 else if (!strncmp (argv[i], "-fno-lto", 8)) |
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996 lto_mode = LTO_MODE_NONE; |
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997 else if (! strcmp (argv[i], "-plugin")) |
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998 { |
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999 use_plugin = true; |
| 111 | 1000 if (selected_linker == USE_DEFAULT_LD) |
| 1001 selected_linker = USE_PLUGIN_LD; | |
|
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1002 } |
| 111 | 1003 else if (strcmp (argv[i], "-fuse-ld=bfd") == 0) |
| 1004 selected_linker = USE_BFD_LD; | |
| 1005 else if (strcmp (argv[i], "-fuse-ld=gold") == 0) | |
| 1006 selected_linker = USE_GOLD_LD; | |
| 1007 | |
|
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1008 #ifdef COLLECT_EXPORT_LIST |
| 111 | 1009 /* These flags are position independent, although their order |
| 1010 is important - subsequent flags override earlier ones. */ | |
| 1011 else if (strcmp (argv[i], "-b64") == 0) | |
| 1012 aix64_flag = 1; | |
| 1013 /* -bexport:filename always needs the :filename */ | |
| 1014 else if (strncmp (argv[i], "-bE:", 4) == 0 | |
| 1015 || strncmp (argv[i], "-bexport:", 9) == 0) | |
| 1016 export_flag = 1; | |
| 1017 else if (strcmp (argv[i], "-brtl") == 0 | |
| 1018 || strcmp (argv[i], "-bsvr4") == 0 | |
| 1019 || strcmp (argv[i], "-G") == 0) | |
| 1020 aixrtl_flag = 1; | |
| 1021 else if (strcmp (argv[i], "-bnortl") == 0) | |
| 1022 aixrtl_flag = 0; | |
| 1023 else if (strcmp (argv[i], "-blazy") == 0) | |
| 1024 aixlazy_flag = 1; | |
|
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1025 #endif |
| 0 | 1026 } |
| 111 | 1027 verbose = debug; |
| 1028 find_file_set_debug (debug); | |
| 1029 if (use_plugin) | |
| 1030 lto_mode = LTO_MODE_NONE; | |
|
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1031 if (no_partition && lto_mode == LTO_MODE_WHOPR) |
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1032 lto_mode = LTO_MODE_LTO; |
| 0 | 1033 } |
| 1034 | |
| 1035 #ifndef DEFAULT_A_OUT_NAME | |
| 1036 output_file = "a.out"; | |
| 1037 #else | |
| 1038 output_file = DEFAULT_A_OUT_NAME; | |
| 1039 #endif | |
| 1040 | |
| 1041 obstack_begin (&temporary_obstack, 0); | |
| 1042 temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0); | |
| 1043 | |
| 1044 #ifndef HAVE_LD_DEMANGLE | |
| 1045 current_demangling_style = auto_demangling; | |
| 1046 #endif | |
| 1047 p = getenv ("COLLECT_GCC_OPTIONS"); | |
| 1048 while (p && *p) | |
| 1049 { | |
| 1050 const char *q = extract_string (&p); | |
| 1051 if (*q == '-' && (q[1] == 'm' || q[1] == 'f')) | |
| 1052 num_c_args++; | |
| 1053 } | |
| 1054 obstack_free (&temporary_obstack, temporary_firstobj); | |
| 1055 | |
| 1056 /* -fno-profile-arcs -fno-test-coverage -fno-branch-probabilities | |
|
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1057 -fno-exceptions -w -fno-whole-program */ |
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1058 num_c_args += 6; |
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1059 |
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1060 c_argv = XCNEWVEC (char *, num_c_args); |
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1061 c_ptr = CONST_CAST2 (const char **, char **, c_argv); |
| 0 | 1062 |
| 1063 if (argc < 2) | |
| 111 | 1064 fatal_error (input_location, "no arguments"); |
| 0 | 1065 |
| 1066 #ifdef SIGQUIT | |
| 1067 if (signal (SIGQUIT, SIG_IGN) != SIG_IGN) | |
| 1068 signal (SIGQUIT, handler); | |
| 1069 #endif | |
| 1070 if (signal (SIGINT, SIG_IGN) != SIG_IGN) | |
| 1071 signal (SIGINT, handler); | |
| 1072 #ifdef SIGALRM | |
| 1073 if (signal (SIGALRM, SIG_IGN) != SIG_IGN) | |
| 1074 signal (SIGALRM, handler); | |
| 1075 #endif | |
| 1076 #ifdef SIGHUP | |
| 1077 if (signal (SIGHUP, SIG_IGN) != SIG_IGN) | |
| 1078 signal (SIGHUP, handler); | |
| 1079 #endif | |
| 1080 if (signal (SIGSEGV, SIG_IGN) != SIG_IGN) | |
| 1081 signal (SIGSEGV, handler); | |
| 1082 #ifdef SIGBUS | |
| 1083 if (signal (SIGBUS, SIG_IGN) != SIG_IGN) | |
| 1084 signal (SIGBUS, handler); | |
| 1085 #endif | |
| 1086 | |
| 1087 /* Extract COMPILER_PATH and PATH into our prefix list. */ | |
| 1088 prefix_from_env ("COMPILER_PATH", &cpath); | |
| 1089 prefix_from_env ("PATH", &path); | |
| 1090 | |
| 1091 /* Try to discover a valid linker/nm/strip to use. */ | |
| 1092 | |
| 1093 /* Maybe we know the right file to use (if not cross). */ | |
| 1094 ld_file_name = 0; | |
| 1095 #ifdef DEFAULT_LINKER | |
| 111 | 1096 if (selected_linker == USE_BFD_LD || selected_linker == USE_GOLD_LD) |
| 1097 { | |
| 1098 char *linker_name; | |
| 1099 # ifdef HOST_EXECUTABLE_SUFFIX | |
| 1100 int len = (sizeof (DEFAULT_LINKER) | |
| 1101 - sizeof (HOST_EXECUTABLE_SUFFIX)); | |
| 1102 linker_name = NULL; | |
| 1103 if (len > 0) | |
| 1104 { | |
| 1105 char *default_linker = xstrdup (DEFAULT_LINKER); | |
| 1106 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains | |
| 1107 HOST_EXECUTABLE_SUFFIX. */ | |
| 1108 if (! strcmp (&default_linker[len], HOST_EXECUTABLE_SUFFIX)) | |
| 1109 { | |
| 1110 default_linker[len] = '\0'; | |
| 1111 linker_name = concat (default_linker, | |
| 1112 &ld_suffixes[selected_linker][2], | |
| 1113 HOST_EXECUTABLE_SUFFIX, NULL); | |
| 1114 } | |
| 1115 } | |
| 1116 if (linker_name == NULL) | |
| 1117 # endif | |
| 1118 linker_name = concat (DEFAULT_LINKER, | |
| 1119 &ld_suffixes[selected_linker][2], | |
| 1120 NULL); | |
| 1121 if (access (linker_name, X_OK) == 0) | |
| 1122 ld_file_name = linker_name; | |
| 1123 } | |
| 1124 if (ld_file_name == 0 && access (DEFAULT_LINKER, X_OK) == 0) | |
| 0 | 1125 ld_file_name = DEFAULT_LINKER; |
| 1126 if (ld_file_name == 0) | |
| 1127 #endif | |
| 1128 #ifdef REAL_LD_FILE_NAME | |
| 111 | 1129 ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME, X_OK); |
| 0 | 1130 if (ld_file_name == 0) |
| 1131 #endif | |
| 1132 /* Search the (target-specific) compiler dirs for ld'. */ | |
| 111 | 1133 ld_file_name = find_a_file (&cpath, real_ld_suffix, X_OK); |
| 0 | 1134 /* Likewise for `collect-ld'. */ |
| 1135 if (ld_file_name == 0) | |
| 111 | 1136 { |
| 1137 ld_file_name = find_a_file (&cpath, collect_ld_suffix, X_OK); | |
| 1138 use_collect_ld = ld_file_name != 0; | |
| 1139 } | |
| 0 | 1140 /* Search the compiler directories for `ld'. We have protection against |
| 1141 recursive calls in find_a_file. */ | |
| 1142 if (ld_file_name == 0) | |
| 111 | 1143 ld_file_name = find_a_file (&cpath, ld_suffixes[selected_linker], X_OK); |
| 0 | 1144 /* Search the ordinary system bin directories |
| 1145 for `ld' (if native linking) or `TARGET-ld' (if cross). */ | |
| 1146 if (ld_file_name == 0) | |
| 111 | 1147 ld_file_name = find_a_file (&path, full_ld_suffixes[selected_linker], X_OK); |
| 0 | 1148 |
| 1149 #ifdef REAL_NM_FILE_NAME | |
| 111 | 1150 nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME, X_OK); |
| 0 | 1151 if (nm_file_name == 0) |
| 1152 #endif | |
| 111 | 1153 nm_file_name = find_a_file (&cpath, gnm_suffix, X_OK); |
| 0 | 1154 if (nm_file_name == 0) |
| 111 | 1155 nm_file_name = find_a_file (&path, full_gnm_suffix, X_OK); |
| 0 | 1156 if (nm_file_name == 0) |
| 111 | 1157 nm_file_name = find_a_file (&cpath, nm_suffix, X_OK); |
| 0 | 1158 if (nm_file_name == 0) |
| 111 | 1159 nm_file_name = find_a_file (&path, full_nm_suffix, X_OK); |
| 0 | 1160 |
| 1161 #ifdef LDD_SUFFIX | |
| 111 | 1162 ldd_file_name = find_a_file (&cpath, ldd_suffix, X_OK); |
| 0 | 1163 if (ldd_file_name == 0) |
| 111 | 1164 ldd_file_name = find_a_file (&path, full_ldd_suffix, X_OK); |
| 0 | 1165 #endif |
| 1166 | |
| 1167 #ifdef REAL_STRIP_FILE_NAME | |
| 111 | 1168 strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME, X_OK); |
| 0 | 1169 if (strip_file_name == 0) |
| 1170 #endif | |
| 111 | 1171 strip_file_name = find_a_file (&cpath, gstrip_suffix, X_OK); |
| 0 | 1172 if (strip_file_name == 0) |
| 111 | 1173 strip_file_name = find_a_file (&path, full_gstrip_suffix, X_OK); |
| 0 | 1174 if (strip_file_name == 0) |
| 111 | 1175 strip_file_name = find_a_file (&cpath, strip_suffix, X_OK); |
| 0 | 1176 if (strip_file_name == 0) |
| 111 | 1177 strip_file_name = find_a_file (&path, full_strip_suffix, X_OK); |
| 0 | 1178 |
| 1179 /* Determine the full path name of the C compiler to use. */ | |
| 1180 c_file_name = getenv ("COLLECT_GCC"); | |
| 1181 if (c_file_name == 0) | |
| 1182 { | |
| 1183 #ifdef CROSS_DIRECTORY_STRUCTURE | |
| 1184 c_file_name = concat (target_machine, "-gcc", NULL); | |
| 1185 #else | |
| 1186 c_file_name = "gcc"; | |
| 1187 #endif | |
| 1188 } | |
| 1189 | |
| 111 | 1190 p = find_a_file (&cpath, c_file_name, X_OK); |
| 0 | 1191 |
| 1192 /* Here it should be safe to use the system search path since we should have | |
| 1193 already qualified the name of the compiler when it is needed. */ | |
| 1194 if (p == 0) | |
| 111 | 1195 p = find_a_file (&path, c_file_name, X_OK); |
| 0 | 1196 |
| 1197 if (p) | |
| 1198 c_file_name = p; | |
| 1199 | |
| 1200 *ld1++ = *ld2++ = ld_file_name; | |
| 1201 | |
| 1202 /* Make temp file names. */ | |
| 1203 c_file = make_temp_file (".c"); | |
| 1204 o_file = make_temp_file (".o"); | |
| 1205 #ifdef COLLECT_EXPORT_LIST | |
| 1206 export_file = make_temp_file (".x"); | |
| 1207 #endif | |
| 111 | 1208 if (!debug) |
| 1209 { | |
| 1210 ldout = make_temp_file (".ld"); | |
| 1211 lderrout = make_temp_file (".le"); | |
| 1212 } | |
| 0 | 1213 *c_ptr++ = c_file_name; |
| 1214 *c_ptr++ = "-x"; | |
| 1215 *c_ptr++ = "c"; | |
| 1216 *c_ptr++ = "-c"; | |
| 1217 *c_ptr++ = "-o"; | |
| 1218 *c_ptr++ = o_file; | |
| 1219 | |
| 1220 #ifdef COLLECT_EXPORT_LIST | |
| 1221 /* Generate a list of directories from LIBPATH. */ | |
| 1222 prefix_from_env ("LIBPATH", &libpath_lib_dirs); | |
| 1223 /* Add to this list also two standard directories where | |
| 1224 AIX loader always searches for libraries. */ | |
| 1225 add_prefix (&libpath_lib_dirs, "/lib"); | |
| 1226 add_prefix (&libpath_lib_dirs, "/usr/lib"); | |
| 1227 #endif | |
| 1228 | |
| 1229 /* Get any options that the upper GCC wants to pass to the sub-GCC. | |
| 1230 | |
| 1231 AIX support needs to know if -shared has been specified before | |
| 1232 parsing commandline arguments. */ | |
| 1233 | |
| 1234 p = getenv ("COLLECT_GCC_OPTIONS"); | |
| 1235 while (p && *p) | |
| 1236 { | |
| 1237 const char *q = extract_string (&p); | |
| 1238 if (*q == '-' && (q[1] == 'm' || q[1] == 'f')) | |
| 1239 *c_ptr++ = xstrdup (q); | |
| 1240 if (strcmp (q, "-EL") == 0 || strcmp (q, "-EB") == 0) | |
| 1241 *c_ptr++ = xstrdup (q); | |
| 1242 if (strcmp (q, "-shared") == 0) | |
| 1243 shared_obj = 1; | |
| 1244 if (*q == '-' && q[1] == 'B') | |
| 1245 { | |
| 1246 *c_ptr++ = xstrdup (q); | |
| 1247 if (q[2] == 0) | |
| 1248 { | |
| 1249 q = extract_string (&p); | |
| 1250 *c_ptr++ = xstrdup (q); | |
| 1251 } | |
| 1252 } | |
| 1253 } | |
| 1254 obstack_free (&temporary_obstack, temporary_firstobj); | |
| 1255 *c_ptr++ = "-fno-profile-arcs"; | |
| 1256 *c_ptr++ = "-fno-test-coverage"; | |
| 1257 *c_ptr++ = "-fno-branch-probabilities"; | |
| 1258 *c_ptr++ = "-fno-exceptions"; | |
| 1259 *c_ptr++ = "-w"; | |
|
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1260 *c_ptr++ = "-fno-whole-program"; |
| 0 | 1261 |
| 1262 /* !!! When GCC calls collect2, | |
| 1263 it does not know whether it is calling collect2 or ld. | |
| 1264 So collect2 cannot meaningfully understand any options | |
| 1265 except those ld understands. | |
| 1266 If you propose to make GCC pass some other option, | |
| 1267 just imagine what will happen if ld is really ld!!! */ | |
| 1268 | |
| 1269 /* Parse arguments. Remember output file spec, pass the rest to ld. */ | |
| 1270 /* After the first file, put in the c++ rt0. */ | |
| 1271 | |
| 1272 first_file = 1; | |
| 1273 while ((arg = *++argv) != (char *) 0) | |
| 1274 { | |
| 1275 *ld1++ = *ld2++ = arg; | |
| 1276 | |
| 1277 if (arg[0] == '-') | |
| 1278 { | |
| 1279 switch (arg[1]) | |
| 1280 { | |
| 1281 case 'd': | |
| 1282 if (!strcmp (arg, "-debug")) | |
| 1283 { | |
| 1284 /* Already parsed. */ | |
| 1285 ld1--; | |
| 1286 ld2--; | |
| 1287 } | |
| 1288 if (!strcmp (arg, "-dynamic-linker") && argv[1]) | |
| 1289 { | |
| 1290 ++argv; | |
| 1291 *ld1++ = *ld2++ = *argv; | |
| 1292 } | |
| 1293 break; | |
| 1294 | |
|
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1295 case 'f': |
|
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1296 if (strncmp (arg, "-flto", 5) == 0) |
|
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1297 { |
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1298 #ifdef ENABLE_LTO |
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1299 /* Do not pass LTO flag to the linker. */ |
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1300 ld1--; |
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1301 ld2--; |
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1302 #else |
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1303 error ("LTO support has not been enabled in this " |
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1304 "configuration"); |
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1305 #endif |
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1306 } |
| 111 | 1307 else if (!use_collect_ld |
| 1308 && strncmp (arg, "-fuse-ld=", 9) == 0) | |
| 1309 { | |
| 1310 /* Do not pass -fuse-ld={bfd|gold} to the linker. */ | |
| 1311 ld1--; | |
| 1312 ld2--; | |
| 1313 } | |
| 1314 else if (strncmp (arg, "-fno-lto", 8) == 0) | |
| 1315 { | |
| 1316 /* Do not pass -fno-lto to the linker. */ | |
| 1317 ld1--; | |
| 1318 ld2--; | |
| 1319 } | |
| 1320 #ifdef TARGET_AIX_VERSION | |
| 1321 else | |
| 1322 { | |
| 1323 /* File containing a list of input files to process. */ | |
| 1324 | |
| 1325 FILE *stream; | |
| 1326 char buf[MAXPATHLEN + 2]; | |
| 1327 /* Number of additionnal object files. */ | |
| 1328 int add_nbr = 0; | |
| 1329 /* Maximum of additionnal object files before vector | |
| 1330 expansion. */ | |
| 1331 int add_max = 0; | |
| 1332 const char *list_filename = arg + 2; | |
| 1333 | |
| 1334 /* Accept -fFILENAME and -f FILENAME. */ | |
| 1335 if (*list_filename == '\0' && argv[1]) | |
| 1336 { | |
| 1337 ++argv; | |
| 1338 list_filename = *argv; | |
| 1339 *ld1++ = *ld2++ = *argv; | |
| 1340 } | |
| 1341 | |
| 1342 stream = fopen (list_filename, "r"); | |
| 1343 if (stream == NULL) | |
| 1344 fatal_error (input_location, "can't open %s: %m", | |
| 1345 list_filename); | |
| 1346 | |
| 1347 while (fgets (buf, sizeof buf, stream) != NULL) | |
| 1348 { | |
| 1349 /* Remove end of line. */ | |
| 1350 int len = strlen (buf); | |
| 1351 if (len >= 1 && buf[len - 1] =='\n') | |
| 1352 buf[len - 1] = '\0'; | |
| 1353 | |
| 1354 /* Put on object vector. | |
| 1355 Note: we only expanse vector here, so we must keep | |
| 1356 extra space for remaining arguments. */ | |
| 1357 if (add_nbr >= add_max) | |
| 1358 { | |
| 1359 int pos = | |
| 1360 object - CONST_CAST2 (const char **, char **, | |
| 1361 object_lst); | |
| 1362 add_max = (add_max == 0) ? 16 : add_max * 2; | |
| 1363 object_lst = XRESIZEVEC (char *, object_lst, | |
| 1364 object_nbr + add_max); | |
| 1365 object = CONST_CAST2 (const char **, char **, | |
| 1366 object_lst) + pos; | |
| 1367 object_nbr += add_max; | |
| 1368 } | |
| 1369 *object++ = xstrdup (buf); | |
| 1370 add_nbr++; | |
| 1371 } | |
| 1372 fclose (stream); | |
| 1373 } | |
| 1374 #endif | |
|
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1375 break; |
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1376 |
| 0 | 1377 case 'l': |
| 1378 if (first_file) | |
| 1379 { | |
| 1380 /* place o_file BEFORE this argument! */ | |
| 1381 first_file = 0; | |
| 1382 ld2--; | |
| 1383 *ld2++ = o_file; | |
| 1384 *ld2++ = arg; | |
| 1385 } | |
| 1386 #ifdef COLLECT_EXPORT_LIST | |
| 1387 { | |
| 1388 /* Resolving full library name. */ | |
| 1389 const char *s = resolve_lib_name (arg+2); | |
| 1390 | |
| 1391 /* Saving a full library name. */ | |
| 1392 add_to_list (&libs, s); | |
| 1393 } | |
| 1394 #endif | |
| 1395 break; | |
| 1396 | |
| 1397 #ifdef COLLECT_EXPORT_LIST | |
| 1398 /* Saving directories where to search for libraries. */ | |
| 1399 case 'L': | |
| 1400 add_prefix (&cmdline_lib_dirs, arg+2); | |
| 1401 break; | |
| 1402 #endif | |
| 1403 | |
| 1404 case 'o': | |
| 1405 if (arg[2] == '\0') | |
| 1406 output_file = *ld1++ = *ld2++ = *++argv; | |
|
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1407 else |
| 0 | 1408 output_file = &arg[2]; |
| 1409 break; | |
| 1410 | |
| 1411 case 'r': | |
| 1412 if (arg[2] == '\0') | |
| 1413 rflag = 1; | |
| 1414 break; | |
| 1415 | |
| 1416 case 's': | |
| 1417 if (arg[2] == '\0' && do_collecting) | |
| 1418 { | |
| 1419 /* We must strip after the nm run, otherwise C++ linking | |
| 1420 will not work. Thus we strip in the second ld run, or | |
| 1421 else with strip if there is no second ld run. */ | |
| 1422 strip_flag = 1; | |
| 1423 ld1--; | |
| 1424 } | |
| 1425 break; | |
| 1426 | |
| 1427 case 'v': | |
| 1428 if (arg[2] == '\0') | |
| 111 | 1429 verbose = true; |
| 0 | 1430 break; |
| 1431 | |
| 1432 case '-': | |
| 1433 if (strcmp (arg, "--no-demangle") == 0) | |
| 1434 { | |
| 111 | 1435 #ifndef HAVE_LD_DEMANGLE |
| 0 | 1436 no_demangle = 1; |
| 1437 ld1--; | |
| 1438 ld2--; | |
| 111 | 1439 #endif |
| 0 | 1440 } |
| 1441 else if (strncmp (arg, "--demangle", 10) == 0) | |
| 1442 { | |
| 111 | 1443 #ifndef HAVE_LD_DEMANGLE |
| 0 | 1444 no_demangle = 0; |
| 1445 if (arg[10] == '=') | |
| 1446 { | |
| 1447 enum demangling_styles style | |
| 1448 = cplus_demangle_name_to_style (arg+11); | |
| 1449 if (style == unknown_demangling) | |
| 1450 error ("unknown demangling style '%s'", arg+11); | |
| 1451 else | |
| 1452 current_demangling_style = style; | |
| 1453 } | |
| 1454 ld1--; | |
| 1455 ld2--; | |
| 111 | 1456 #endif |
| 0 | 1457 } |
|
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1458 else if (strncmp (arg, "--sysroot=", 10) == 0) |
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1459 target_system_root = arg + 10; |
|
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1460 else if (strcmp (arg, "--version") == 0) |
| 111 | 1461 verbose = true; |
|
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1462 else if (strcmp (arg, "--help") == 0) |
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1463 helpflag = true; |
| 0 | 1464 break; |
| 1465 } | |
| 1466 } | |
| 1467 else if ((p = strrchr (arg, '.')) != (char *) 0 | |
| 1468 && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0 | |
| 1469 || strcmp (p, ".so") == 0 || strcmp (p, ".lo") == 0 | |
| 1470 || strcmp (p, ".obj") == 0)) | |
| 1471 { | |
| 1472 if (first_file) | |
| 1473 { | |
| 1474 first_file = 0; | |
| 1475 if (p[1] == 'o') | |
| 1476 *ld2++ = o_file; | |
| 1477 else | |
| 1478 { | |
| 1479 /* place o_file BEFORE this argument! */ | |
| 1480 ld2--; | |
| 1481 *ld2++ = o_file; | |
| 1482 *ld2++ = arg; | |
| 1483 } | |
| 1484 } | |
| 1485 if (p[1] == 'o' || p[1] == 'l') | |
| 1486 *object++ = arg; | |
| 1487 #ifdef COLLECT_EXPORT_LIST | |
| 1488 /* libraries can be specified directly, i.e. without -l flag. */ | |
| 1489 else | |
| 1490 { | |
| 1491 /* Saving a full library name. */ | |
| 1492 add_to_list (&libs, arg); | |
| 1493 } | |
| 1494 #endif | |
| 1495 } | |
| 1496 } | |
| 1497 | |
| 1498 #ifdef COLLECT_EXPORT_LIST | |
| 1499 /* This is added only for debugging purposes. */ | |
| 1500 if (debug) | |
| 1501 { | |
| 1502 fprintf (stderr, "List of libraries:\n"); | |
| 1503 dump_list (stderr, "\t", libs.first); | |
| 1504 } | |
| 1505 | |
| 1506 /* The AIX linker will discard static constructors in object files if | |
|
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1507 nothing else in the file is referenced, so look at them first. Unless |
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1508 we are building a shared object, ignore the eh frame tables, as we |
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1509 would otherwise reference them all, hence drag all the corresponding |
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1510 objects even if nothing else is referenced. */ |
| 0 | 1511 { |
|
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1512 const char **export_object_lst |
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1513 = CONST_CAST2 (const char **, char **, object_lst); |
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1514 |
| 0 | 1515 struct id *list = libs.first; |
| 1516 | |
|
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1517 /* Compute the filter to use from the current one, do scan, then adjust |
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1518 the "current" filter to remove what we just included here. This will |
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1519 control whether we need a first pass link later on or not, and what |
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1520 will remain to be scanned there. */ |
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1521 |
|
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1522 scanfilter this_filter = ld1_filter; |
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1523 #if HAVE_AS_REF |
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1524 if (!shared_obj) |
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1525 this_filter &= ~SCAN_DWEH; |
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1526 #endif |
|
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1527 |
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1528 while (export_object_lst < object) |
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|
1529 scan_prog_file (*export_object_lst++, PASS_OBJ, this_filter); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
1530 |
| 0 | 1531 for (; list; list = list->next) |
|
55
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update it from 4.4.3 to 4.5.0
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diff
changeset
|
1532 scan_prog_file (list->name, PASS_FIRST, this_filter); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1533 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
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diff
changeset
|
1534 ld1_filter = ld1_filter & ~this_filter; |
| 0 | 1535 } |
| 1536 | |
| 1537 if (exports.first) | |
| 1538 { | |
| 1539 char *buf = concat ("-bE:", export_file, NULL); | |
| 1540 | |
| 1541 *ld1++ = buf; | |
| 1542 *ld2++ = buf; | |
| 1543 | |
| 1544 exportf = fopen (export_file, "w"); | |
| 1545 if (exportf == (FILE *) 0) | |
| 111 | 1546 fatal_error (input_location, "fopen %s: %m", export_file); |
| 0 | 1547 write_aix_file (exportf, exports.first); |
| 1548 if (fclose (exportf)) | |
| 111 | 1549 fatal_error (input_location, "fclose %s: %m", export_file); |
| 0 | 1550 } |
| 1551 #endif | |
| 1552 | |
| 1553 *c_ptr++ = c_file; | |
| 1554 *c_ptr = *ld1 = *object = (char *) 0; | |
| 1555 | |
| 111 | 1556 if (verbose) |
| 1557 notice ("collect2 version %s\n", version_string); | |
| 0 | 1558 |
|
63
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diff
changeset
|
1559 if (helpflag) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
1560 { |
|
67
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diff
changeset
|
1561 printf ("Usage: collect2 [options]\n"); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
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diff
changeset
|
1562 printf (" Wrap linker and generate constructor code if needed.\n"); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
changeset
|
1563 printf (" Options:\n"); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
changeset
|
1564 printf (" -debug Enable debug output\n"); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
changeset
|
1565 printf (" --help Display this information\n"); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
changeset
|
1566 printf (" -v, --version Display this program's version number\n"); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
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diff
changeset
|
1567 printf ("\n"); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
changeset
|
1568 printf ("Overview: http://gcc.gnu.org/onlinedocs/gccint/Collect2.html\n"); |
|
f6334be47118
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diff
changeset
|
1569 printf ("Report bugs: %s\n", bug_report_url); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
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changeset
|
1570 printf ("\n"); |
|
63
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diff
changeset
|
1571 } |
|
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diff
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|
1572 |
| 0 | 1573 if (debug) |
| 1574 { | |
| 1575 const char *ptr; | |
| 1576 fprintf (stderr, "ld_file_name = %s\n", | |
| 1577 (ld_file_name ? ld_file_name : "not found")); | |
| 1578 fprintf (stderr, "c_file_name = %s\n", | |
| 1579 (c_file_name ? c_file_name : "not found")); | |
| 1580 fprintf (stderr, "nm_file_name = %s\n", | |
| 1581 (nm_file_name ? nm_file_name : "not found")); | |
| 1582 #ifdef LDD_SUFFIX | |
| 1583 fprintf (stderr, "ldd_file_name = %s\n", | |
| 1584 (ldd_file_name ? ldd_file_name : "not found")); | |
| 1585 #endif | |
| 1586 fprintf (stderr, "strip_file_name = %s\n", | |
| 1587 (strip_file_name ? strip_file_name : "not found")); | |
| 1588 fprintf (stderr, "c_file = %s\n", | |
| 1589 (c_file ? c_file : "not found")); | |
| 1590 fprintf (stderr, "o_file = %s\n", | |
| 1591 (o_file ? o_file : "not found")); | |
| 1592 | |
| 1593 ptr = getenv ("COLLECT_GCC_OPTIONS"); | |
| 1594 if (ptr) | |
| 1595 fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr); | |
| 1596 | |
| 1597 ptr = getenv ("COLLECT_GCC"); | |
| 1598 if (ptr) | |
| 1599 fprintf (stderr, "COLLECT_GCC = %s\n", ptr); | |
| 1600 | |
| 1601 ptr = getenv ("COMPILER_PATH"); | |
| 1602 if (ptr) | |
| 1603 fprintf (stderr, "COMPILER_PATH = %s\n", ptr); | |
| 1604 | |
| 1605 ptr = getenv (LIBRARY_PATH_ENV); | |
| 1606 if (ptr) | |
| 1607 fprintf (stderr, "%-20s= %s\n", LIBRARY_PATH_ENV, ptr); | |
| 1608 | |
| 1609 fprintf (stderr, "\n"); | |
| 1610 } | |
| 1611 | |
| 1612 /* Load the program, searching all libraries and attempting to provide | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1613 undefined symbols from repository information. |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1614 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
1615 If -r or they will be run via some other method, do not build the |
| 0 | 1616 constructor or destructor list, just return now. */ |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
1617 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1618 bool early_exit |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
1619 = rflag || (! DO_COLLECT_EXPORT_LIST && ! do_collecting); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1620 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
1621 /* Perform the first pass link now, if we're about to exit or if we need |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
1622 to scan for things we haven't collected yet before pursuing further. |
|
77e2b8dfacca
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diff
changeset
|
1623 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
1624 On AIX, the latter typically includes nothing for shared objects or |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1625 frame tables for an executable, out of what the required early scan on |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1626 objects and libraries has performed above. In the !shared_obj case, we |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1627 expect the relevant tables to be dragged together with their associated |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1628 functions from precise cross reference insertions by the compiler. */ |
|
77e2b8dfacca
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diff
changeset
|
1629 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1630 if (early_exit || ld1_filter != SCAN_NOTHING) |
| 0 | 1631 do_tlink (ld1_argv, object_lst); |
| 1632 | |
|
55
77e2b8dfacca
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diff
changeset
|
1633 if (early_exit) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1634 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1635 #ifdef COLLECT_EXPORT_LIST |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1636 /* Make sure we delete the export file we may have created. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1637 if (export_file != 0 && export_file[0]) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
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diff
changeset
|
1638 maybe_unlink (export_file); |
| 0 | 1639 #endif |
|
63
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update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
1640 if (lto_mode != LTO_MODE_NONE) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
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0
diff
changeset
|
1641 maybe_run_lto_and_relink (ld1_argv, object_lst, object, false); |
|
67
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
changeset
|
1642 else |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
changeset
|
1643 post_ld_pass (false); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1644 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1645 maybe_unlink (c_file); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
1646 maybe_unlink (o_file); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
1647 return 0; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
1648 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
1649 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1650 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1651 /* Unless we have done it all already, examine the namelist and search for |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1652 static constructors and destructors to call. Write the constructor and |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
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0
diff
changeset
|
1653 destructor tables to a .s file and reload. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1654 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1655 if (ld1_filter != SCAN_NOTHING) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1656 scan_prog_file (output_file, PASS_FIRST, ld1_filter); |
| 0 | 1657 |
| 1658 #ifdef SCAN_LIBRARIES | |
| 1659 scan_libraries (output_file); | |
| 1660 #endif | |
| 1661 | |
| 1662 if (debug) | |
| 1663 { | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
1664 notice_translated (ngettext ("%d constructor found\n", |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
1665 "%d constructors found\n", |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
1666 constructors.number), |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
1667 constructors.number); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
1668 notice_translated (ngettext ("%d destructor found\n", |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
1669 "%d destructors found\n", |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
1670 destructors.number), |
|
b7f97abdc517
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55
diff
changeset
|
1671 destructors.number); |
| 111 | 1672 notice_translated (ngettext ("%d frame table found\n", |
| 1673 "%d frame tables found\n", | |
| 1674 frame_tables.number), | |
|
63
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55
diff
changeset
|
1675 frame_tables.number); |
| 0 | 1676 } |
| 1677 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1678 /* If the scan exposed nothing of special interest, there's no need to |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1679 generate the glue code and relink so return now. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1680 |
| 0 | 1681 if (constructors.number == 0 && destructors.number == 0 |
| 1682 && frame_tables.number == 0 | |
| 1683 #if defined (SCAN_LIBRARIES) || defined (COLLECT_EXPORT_LIST) | |
| 1684 /* If we will be running these functions ourselves, we want to emit | |
| 1685 stubs into the shared library so that we do not have to relink | |
| 1686 dependent programs when we add static objects. */ | |
| 1687 && ! shared_obj | |
| 1688 #endif | |
| 1689 ) | |
| 1690 { | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1691 /* Do tlink without additional code generation now if we didn't |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1692 do it earlier for scanning purposes. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1693 if (ld1_filter == SCAN_NOTHING) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
1694 do_tlink (ld1_argv, object_lst); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1695 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
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0
diff
changeset
|
1696 if (lto_mode) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
1697 maybe_run_lto_and_relink (ld1_argv, object_lst, object, false); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
1698 |
| 0 | 1699 /* Strip now if it was requested on the command line. */ |
| 1700 if (strip_flag) | |
| 1701 { | |
| 1702 char **real_strip_argv = XCNEWVEC (char *, 3); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1703 const char ** strip_argv = CONST_CAST2 (const char **, char **, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
1704 real_strip_argv); |
| 0 | 1705 |
| 1706 strip_argv[0] = strip_file_name; | |
| 1707 strip_argv[1] = output_file; | |
| 1708 strip_argv[2] = (char *) 0; | |
| 111 | 1709 fork_execute ("strip", real_strip_argv, false); |
| 0 | 1710 } |
| 1711 | |
| 1712 #ifdef COLLECT_EXPORT_LIST | |
| 1713 maybe_unlink (export_file); | |
| 1714 #endif | |
|
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1715 post_ld_pass (false); |
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1716 |
| 0 | 1717 maybe_unlink (c_file); |
| 1718 maybe_unlink (o_file); | |
| 1719 return 0; | |
| 1720 } | |
| 1721 | |
| 1722 /* Sort ctor and dtor lists by priority. */ | |
| 1723 sort_ids (&constructors); | |
| 1724 sort_ids (&destructors); | |
| 1725 | |
| 111 | 1726 maybe_unlink (output_file); |
| 0 | 1727 outf = fopen (c_file, "w"); |
| 1728 if (outf == (FILE *) 0) | |
| 111 | 1729 fatal_error (input_location, "fopen %s: %m", c_file); |
| 0 | 1730 |
| 1731 write_c_file (outf, c_file); | |
| 1732 | |
| 1733 if (fclose (outf)) | |
| 111 | 1734 fatal_error (input_location, "fclose %s: %m", c_file); |
| 0 | 1735 |
| 1736 /* Tell the linker that we have initializer and finalizer functions. */ | |
| 1737 #ifdef LD_INIT_SWITCH | |
| 1738 #ifdef COLLECT_EXPORT_LIST | |
| 1739 *ld2++ = concat (LD_INIT_SWITCH, ":", initname, ":", fininame, NULL); | |
| 1740 #else | |
| 1741 *ld2++ = LD_INIT_SWITCH; | |
| 1742 *ld2++ = initname; | |
| 1743 *ld2++ = LD_FINI_SWITCH; | |
| 1744 *ld2++ = fininame; | |
| 1745 #endif | |
| 1746 #endif | |
| 1747 | |
| 1748 #ifdef COLLECT_EXPORT_LIST | |
| 1749 if (shared_obj) | |
| 1750 { | |
| 1751 /* If we did not add export flag to link arguments before, add it to | |
| 1752 second link phase now. No new exports should have been added. */ | |
| 1753 if (! exports.first) | |
| 1754 *ld2++ = concat ("-bE:", export_file, NULL); | |
| 1755 | |
| 111 | 1756 #ifdef TARGET_AIX_VERSION |
| 1757 add_to_list (&exports, aix_shared_initname); | |
| 1758 add_to_list (&exports, aix_shared_fininame); | |
| 1759 #endif | |
| 1760 | |
| 0 | 1761 #ifndef LD_INIT_SWITCH |
| 1762 add_to_list (&exports, initname); | |
| 1763 add_to_list (&exports, fininame); | |
| 1764 add_to_list (&exports, "_GLOBAL__DI"); | |
| 1765 add_to_list (&exports, "_GLOBAL__DD"); | |
| 1766 #endif | |
| 1767 exportf = fopen (export_file, "w"); | |
| 1768 if (exportf == (FILE *) 0) | |
| 111 | 1769 fatal_error (input_location, "fopen %s: %m", export_file); |
| 0 | 1770 write_aix_file (exportf, exports.first); |
| 1771 if (fclose (exportf)) | |
| 111 | 1772 fatal_error (input_location, "fclose %s: %m", export_file); |
| 0 | 1773 } |
| 1774 #endif | |
| 1775 | |
| 1776 /* End of arguments to second link phase. */ | |
| 1777 *ld2 = (char*) 0; | |
| 1778 | |
| 1779 if (debug) | |
| 1780 { | |
| 1781 fprintf (stderr, "\n========== output_file = %s, c_file = %s\n", | |
| 1782 output_file, c_file); | |
| 1783 write_c_file (stderr, "stderr"); | |
| 1784 fprintf (stderr, "========== end of c_file\n\n"); | |
| 1785 #ifdef COLLECT_EXPORT_LIST | |
| 1786 fprintf (stderr, "\n========== export_file = %s\n", export_file); | |
| 1787 write_aix_file (stderr, exports.first); | |
| 1788 fprintf (stderr, "========== end of export_file\n\n"); | |
| 1789 #endif | |
| 1790 } | |
| 1791 | |
| 1792 /* Assemble the constructor and destructor tables. | |
| 1793 Link the tables in with the rest of the program. */ | |
| 1794 | |
| 111 | 1795 fork_execute ("gcc", c_argv, at_file_supplied); |
| 0 | 1796 #ifdef COLLECT_EXPORT_LIST |
| 1797 /* On AIX we must call tlink because of possible templates resolution. */ | |
| 1798 do_tlink (ld2_argv, object_lst); | |
|
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1799 |
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1800 if (lto_mode) |
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1801 maybe_run_lto_and_relink (ld2_argv, object_lst, object, false); |
| 0 | 1802 #else |
| 1803 /* Otherwise, simply call ld because tlink is already done. */ | |
|
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1804 if (lto_mode) |
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1805 maybe_run_lto_and_relink (ld2_argv, object_lst, object, true); |
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1806 else |
|
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1807 { |
| 111 | 1808 fork_execute ("ld", ld2_argv, HAVE_GNU_LD && at_file_supplied); |
|
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1809 post_ld_pass (false); |
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1810 } |
| 0 | 1811 |
| 1812 /* Let scan_prog_file do any final mods (OSF/rose needs this for | |
| 1813 constructors/destructors in shared libraries. */ | |
|
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1814 scan_prog_file (output_file, PASS_SECOND, SCAN_ALL); |
| 0 | 1815 #endif |
| 1816 | |
| 1817 maybe_unlink (c_file); | |
| 1818 maybe_unlink (o_file); | |
| 1819 | |
| 1820 #ifdef COLLECT_EXPORT_LIST | |
| 1821 maybe_unlink (export_file); | |
| 1822 #endif | |
| 1823 | |
| 1824 return 0; | |
| 1825 } | |
| 1826 | |
| 1827 | |
| 111 | 1828 /* Unlink FILE unless we are debugging or this is the output_file |
| 1829 and we may not unlink it. */ | |
| 1830 | |
| 1831 void | |
| 0 | 1832 maybe_unlink (const char *file) |
| 1833 { | |
| 111 | 1834 if (debug) |
| 1835 { | |
| 1836 notice ("[Leaving %s]\n", file); | |
| 1837 return; | |
| 1838 } | |
| 1839 | |
| 1840 if (file == output_file && !may_unlink_output_file) | |
| 1841 return; | |
| 1842 | |
| 1843 unlink_if_ordinary (file); | |
| 0 | 1844 } |
| 1845 | |
|
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1846 /* Call maybe_unlink on the NULL-terminated list, FILE_LIST. */ |
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1847 |
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1848 static void |
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1849 maybe_unlink_list (char **file_list) |
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1850 { |
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1851 char **tmp = file_list; |
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1852 |
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1853 while (*tmp) |
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1854 maybe_unlink (*(tmp++)); |
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1855 } |
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1856 |
| 0 | 1857 |
| 1858 static long sequence_number = 0; | |
| 1859 | |
| 1860 /* Add a name to a linked list. */ | |
| 1861 | |
| 1862 static void | |
| 1863 add_to_list (struct head *head_ptr, const char *name) | |
| 1864 { | |
| 1865 struct id *newid | |
| 1866 = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1); | |
| 1867 struct id *p; | |
| 1868 strcpy (newid->name, name); | |
| 1869 | |
| 1870 if (head_ptr->first) | |
| 1871 head_ptr->last->next = newid; | |
| 1872 else | |
| 1873 head_ptr->first = newid; | |
| 1874 | |
| 1875 /* Check for duplicate symbols. */ | |
| 1876 for (p = head_ptr->first; | |
| 1877 strcmp (name, p->name) != 0; | |
| 1878 p = p->next) | |
| 1879 ; | |
| 1880 if (p != newid) | |
| 1881 { | |
| 1882 head_ptr->last->next = 0; | |
| 1883 free (newid); | |
| 1884 return; | |
| 1885 } | |
| 1886 | |
| 1887 newid->sequence = ++sequence_number; | |
| 1888 head_ptr->last = newid; | |
| 1889 head_ptr->number++; | |
| 1890 } | |
| 1891 | |
| 1892 /* Grab the init priority number from an init function name that | |
| 1893 looks like "_GLOBAL_.I.12345.foo". */ | |
| 1894 | |
| 1895 static int | |
| 1896 extract_init_priority (const char *name) | |
| 1897 { | |
| 1898 int pos = 0, pri; | |
| 1899 | |
| 111 | 1900 #ifdef TARGET_AIX_VERSION |
| 1901 /* Run dependent module initializers before any constructors in this | |
| 1902 module. */ | |
| 1903 switch (is_ctor_dtor (name)) | |
| 1904 { | |
| 1905 case SYM_AIXI: | |
| 1906 case SYM_AIXD: | |
| 1907 return INT_MIN; | |
| 1908 default: | |
| 1909 break; | |
| 1910 } | |
| 1911 #endif | |
| 1912 | |
| 0 | 1913 while (name[pos] == '_') |
| 1914 ++pos; | |
| 1915 pos += 10; /* strlen ("GLOBAL__X_") */ | |
| 1916 | |
| 1917 /* Extract init_p number from ctor/dtor name. */ | |
| 1918 pri = atoi (name + pos); | |
| 1919 return pri ? pri : DEFAULT_INIT_PRIORITY; | |
| 1920 } | |
| 1921 | |
| 1922 /* Insertion sort the ids from ctor/dtor list HEAD_PTR in descending order. | |
| 1923 ctors will be run from right to left, dtors from left to right. */ | |
| 1924 | |
| 1925 static void | |
| 1926 sort_ids (struct head *head_ptr) | |
| 1927 { | |
| 1928 /* id holds the current element to insert. id_next holds the next | |
| 1929 element to insert. id_ptr iterates through the already sorted elements | |
| 1930 looking for the place to insert id. */ | |
| 1931 struct id *id, *id_next, **id_ptr; | |
| 1932 | |
| 1933 id = head_ptr->first; | |
| 1934 | |
| 1935 /* We don't have any sorted elements yet. */ | |
| 1936 head_ptr->first = NULL; | |
| 1937 | |
| 1938 for (; id; id = id_next) | |
| 1939 { | |
| 1940 id_next = id->next; | |
| 1941 id->sequence = extract_init_priority (id->name); | |
| 1942 | |
| 1943 for (id_ptr = &(head_ptr->first); ; id_ptr = &((*id_ptr)->next)) | |
| 1944 if (*id_ptr == NULL | |
| 1945 /* If the sequence numbers are the same, we put the id from the | |
| 1946 file later on the command line later in the list. */ | |
| 1947 || id->sequence > (*id_ptr)->sequence | |
| 1948 /* Hack: do lexical compare, too. | |
| 1949 || (id->sequence == (*id_ptr)->sequence | |
| 1950 && strcmp (id->name, (*id_ptr)->name) > 0) */ | |
| 1951 ) | |
| 1952 { | |
| 1953 id->next = *id_ptr; | |
| 1954 *id_ptr = id; | |
| 1955 break; | |
| 1956 } | |
| 1957 } | |
| 1958 | |
| 1959 /* Now set the sequence numbers properly so write_c_file works. */ | |
| 1960 for (id = head_ptr->first; id; id = id->next) | |
| 1961 id->sequence = ++sequence_number; | |
| 1962 } | |
| 1963 | |
| 1964 /* Write: `prefix', the names on list LIST, `suffix'. */ | |
| 1965 | |
| 1966 static void | |
| 1967 write_list (FILE *stream, const char *prefix, struct id *list) | |
| 1968 { | |
| 1969 while (list) | |
| 1970 { | |
| 1971 fprintf (stream, "%sx%d,\n", prefix, list->sequence); | |
| 1972 list = list->next; | |
| 1973 } | |
| 1974 } | |
| 1975 | |
| 1976 #ifdef COLLECT_EXPORT_LIST | |
| 1977 /* This function is really used only on AIX, but may be useful. */ | |
| 1978 #if 0 | |
| 1979 static int | |
| 1980 is_in_list (const char *prefix, struct id *list) | |
| 1981 { | |
| 1982 while (list) | |
| 1983 { | |
| 1984 if (!strcmp (prefix, list->name)) return 1; | |
| 1985 list = list->next; | |
| 1986 } | |
| 1987 return 0; | |
| 1988 } | |
| 1989 #endif | |
| 1990 #endif /* COLLECT_EXPORT_LIST */ | |
| 1991 | |
| 1992 /* Added for debugging purpose. */ | |
| 1993 #ifdef COLLECT_EXPORT_LIST | |
| 1994 static void | |
| 1995 dump_list (FILE *stream, const char *prefix, struct id *list) | |
| 1996 { | |
| 1997 while (list) | |
| 1998 { | |
| 1999 fprintf (stream, "%s%s,\n", prefix, list->name); | |
| 2000 list = list->next; | |
| 2001 } | |
| 2002 } | |
| 2003 #endif | |
| 2004 | |
| 2005 #if 0 | |
| 2006 static void | |
| 2007 dump_prefix_list (FILE *stream, const char *prefix, struct prefix_list *list) | |
| 2008 { | |
| 2009 while (list) | |
| 2010 { | |
| 2011 fprintf (stream, "%s%s,\n", prefix, list->prefix); | |
| 2012 list = list->next; | |
| 2013 } | |
| 2014 } | |
| 2015 #endif | |
| 2016 | |
| 2017 static void | |
| 2018 write_list_with_asm (FILE *stream, const char *prefix, struct id *list) | |
| 2019 { | |
| 2020 while (list) | |
| 2021 { | |
| 2022 fprintf (stream, "%sx%d __asm__ (\"%s\");\n", | |
| 2023 prefix, list->sequence, list->name); | |
| 2024 list = list->next; | |
| 2025 } | |
| 2026 } | |
| 2027 | |
| 2028 /* Write out the constructor and destructor tables statically (for a shared | |
| 2029 object), along with the functions to execute them. */ | |
| 2030 | |
| 2031 static void | |
| 2032 write_c_file_stat (FILE *stream, const char *name ATTRIBUTE_UNUSED) | |
| 2033 { | |
| 2034 const char *p, *q; | |
| 2035 char *prefix, *r; | |
| 2036 int frames = (frame_tables.number > 0); | |
| 2037 | |
| 2038 /* Figure out name of output_file, stripping off .so version. */ | |
| 111 | 2039 q = p = lbasename (output_file); |
| 2040 | |
| 0 | 2041 while (q) |
| 2042 { | |
| 2043 q = strchr (q,'.'); | |
| 2044 if (q == 0) | |
| 2045 { | |
| 2046 q = p + strlen (p); | |
| 2047 break; | |
| 2048 } | |
| 2049 else | |
| 2050 { | |
| 111 | 2051 if (filename_ncmp (q, SHLIB_SUFFIX, strlen (SHLIB_SUFFIX)) == 0) |
| 0 | 2052 { |
| 2053 q += strlen (SHLIB_SUFFIX); | |
| 2054 break; | |
| 2055 } | |
| 2056 else | |
| 2057 q++; | |
| 2058 } | |
| 2059 } | |
| 2060 /* q points to null at end of the string (or . of the .so version) */ | |
| 2061 prefix = XNEWVEC (char, q - p + 1); | |
| 2062 strncpy (prefix, p, q - p); | |
| 2063 prefix[q - p] = 0; | |
| 2064 for (r = prefix; *r; r++) | |
| 2065 if (!ISALNUM ((unsigned char)*r)) | |
| 2066 *r = '_'; | |
| 2067 if (debug) | |
| 2068 notice ("\nwrite_c_file - output name is %s, prefix is %s\n", | |
| 2069 output_file, prefix); | |
| 2070 | |
| 2071 initname = concat ("_GLOBAL__FI_", prefix, NULL); | |
| 2072 fininame = concat ("_GLOBAL__FD_", prefix, NULL); | |
| 111 | 2073 #ifdef TARGET_AIX_VERSION |
| 2074 aix_shared_initname = concat ("_GLOBAL__AIXI_", prefix, NULL); | |
| 2075 aix_shared_fininame = concat ("_GLOBAL__AIXD_", prefix, NULL); | |
| 2076 #endif | |
| 0 | 2077 |
| 2078 free (prefix); | |
| 2079 | |
| 2080 /* Write the tables as C code. */ | |
| 2081 | |
| 111 | 2082 /* This count variable is used to prevent multiple calls to the |
| 2083 constructors/destructors. | |
| 2084 This guard against multiple calls is important on AIX as the initfini | |
| 2085 functions are deliberately invoked multiple times as part of the | |
| 2086 mechanisms GCC uses to order constructors across different dependent | |
| 2087 shared libraries (see config/rs6000/aix.h). | |
| 2088 */ | |
| 0 | 2089 fprintf (stream, "static int count;\n"); |
| 2090 fprintf (stream, "typedef void entry_pt();\n"); | |
| 2091 write_list_with_asm (stream, "extern entry_pt ", constructors.first); | |
| 2092 | |
| 2093 if (frames) | |
| 2094 { | |
| 2095 write_list_with_asm (stream, "extern void *", frame_tables.first); | |
| 2096 | |
| 2097 fprintf (stream, "\tstatic void *frame_table[] = {\n"); | |
| 2098 write_list (stream, "\t\t&", frame_tables.first); | |
| 2099 fprintf (stream, "\t0\n};\n"); | |
| 2100 | |
| 2101 /* This must match what's in frame.h. */ | |
| 2102 fprintf (stream, "struct object {\n"); | |
| 2103 fprintf (stream, " void *pc_begin;\n"); | |
| 2104 fprintf (stream, " void *pc_end;\n"); | |
| 2105 fprintf (stream, " void *fde_begin;\n"); | |
| 2106 fprintf (stream, " void *fde_array;\n"); | |
| 2107 fprintf (stream, " __SIZE_TYPE__ count;\n"); | |
| 2108 fprintf (stream, " struct object *next;\n"); | |
| 2109 fprintf (stream, "};\n"); | |
| 2110 | |
| 111 | 2111 fprintf (stream, "extern void __register_frame_info_table_bases (void *, struct object *, void *tbase, void *dbase);\n"); |
| 0 | 2112 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n"); |
| 2113 fprintf (stream, "extern void *__deregister_frame_info (void *);\n"); | |
| 111 | 2114 #ifdef TARGET_AIX_VERSION |
| 2115 fprintf (stream, "extern void *__gcc_unwind_dbase;\n"); | |
| 2116 #endif | |
| 0 | 2117 |
| 2118 fprintf (stream, "static void reg_frame () {\n"); | |
| 2119 fprintf (stream, "\tstatic struct object ob;\n"); | |
| 111 | 2120 #ifdef TARGET_AIX_VERSION |
| 2121 /* Use __gcc_unwind_dbase as the base address for data on AIX. | |
| 2122 This might not be the start of the segment, signed offsets assumed. | |
| 2123 */ | |
| 2124 fprintf (stream, "\t__register_frame_info_table_bases (frame_table, &ob, (void *)0, &__gcc_unwind_dbase);\n"); | |
| 2125 #else | |
| 0 | 2126 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n"); |
| 111 | 2127 #endif |
| 0 | 2128 fprintf (stream, "\t}\n"); |
| 2129 | |
| 2130 fprintf (stream, "static void dereg_frame () {\n"); | |
| 2131 fprintf (stream, "\t__deregister_frame_info (frame_table);\n"); | |
| 2132 fprintf (stream, "\t}\n"); | |
| 2133 } | |
| 2134 | |
| 2135 fprintf (stream, "void %s() {\n", initname); | |
| 2136 if (constructors.number > 0 || frames) | |
| 2137 { | |
| 2138 fprintf (stream, "\tstatic entry_pt *ctors[] = {\n"); | |
| 2139 write_list (stream, "\t\t", constructors.first); | |
| 2140 if (frames) | |
| 2141 fprintf (stream, "\treg_frame,\n"); | |
| 2142 fprintf (stream, "\t};\n"); | |
| 2143 fprintf (stream, "\tentry_pt **p;\n"); | |
| 2144 fprintf (stream, "\tif (count++ != 0) return;\n"); | |
| 2145 fprintf (stream, "\tp = ctors + %d;\n", constructors.number + frames); | |
| 2146 fprintf (stream, "\twhile (p > ctors) (*--p)();\n"); | |
| 2147 } | |
| 2148 else | |
| 2149 fprintf (stream, "\t++count;\n"); | |
| 2150 fprintf (stream, "}\n"); | |
| 2151 write_list_with_asm (stream, "extern entry_pt ", destructors.first); | |
| 2152 fprintf (stream, "void %s() {\n", fininame); | |
| 2153 if (destructors.number > 0 || frames) | |
| 2154 { | |
| 2155 fprintf (stream, "\tstatic entry_pt *dtors[] = {\n"); | |
| 2156 write_list (stream, "\t\t", destructors.first); | |
| 2157 if (frames) | |
| 2158 fprintf (stream, "\tdereg_frame,\n"); | |
| 2159 fprintf (stream, "\t};\n"); | |
| 2160 fprintf (stream, "\tentry_pt **p;\n"); | |
| 2161 fprintf (stream, "\tif (--count != 0) return;\n"); | |
| 2162 fprintf (stream, "\tp = dtors;\n"); | |
| 2163 fprintf (stream, "\twhile (p < dtors + %d) (*p++)();\n", | |
| 2164 destructors.number + frames); | |
| 2165 } | |
| 2166 fprintf (stream, "}\n"); | |
| 2167 | |
| 2168 if (shared_obj) | |
| 2169 { | |
| 111 | 2170 COLLECT_SHARED_INIT_FUNC (stream, initname); |
| 2171 COLLECT_SHARED_FINI_FUNC (stream, fininame); | |
| 0 | 2172 } |
| 2173 } | |
| 2174 | |
| 2175 /* Write the constructor/destructor tables. */ | |
| 2176 | |
| 2177 #ifndef LD_INIT_SWITCH | |
| 2178 static void | |
| 2179 write_c_file_glob (FILE *stream, const char *name ATTRIBUTE_UNUSED) | |
| 2180 { | |
| 2181 /* Write the tables as C code. */ | |
| 2182 | |
| 2183 int frames = (frame_tables.number > 0); | |
| 2184 | |
| 2185 fprintf (stream, "typedef void entry_pt();\n\n"); | |
| 2186 | |
| 2187 write_list_with_asm (stream, "extern entry_pt ", constructors.first); | |
| 2188 | |
| 2189 if (frames) | |
| 2190 { | |
| 2191 write_list_with_asm (stream, "extern void *", frame_tables.first); | |
| 2192 | |
| 2193 fprintf (stream, "\tstatic void *frame_table[] = {\n"); | |
| 2194 write_list (stream, "\t\t&", frame_tables.first); | |
| 2195 fprintf (stream, "\t0\n};\n"); | |
| 2196 | |
| 2197 /* This must match what's in frame.h. */ | |
| 2198 fprintf (stream, "struct object {\n"); | |
| 2199 fprintf (stream, " void *pc_begin;\n"); | |
| 2200 fprintf (stream, " void *pc_end;\n"); | |
| 2201 fprintf (stream, " void *fde_begin;\n"); | |
| 2202 fprintf (stream, " void *fde_array;\n"); | |
| 2203 fprintf (stream, " __SIZE_TYPE__ count;\n"); | |
| 2204 fprintf (stream, " struct object *next;\n"); | |
| 2205 fprintf (stream, "};\n"); | |
| 2206 | |
| 2207 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n"); | |
| 2208 fprintf (stream, "extern void *__deregister_frame_info (void *);\n"); | |
| 2209 | |
| 2210 fprintf (stream, "static void reg_frame () {\n"); | |
| 2211 fprintf (stream, "\tstatic struct object ob;\n"); | |
| 2212 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n"); | |
| 2213 fprintf (stream, "\t}\n"); | |
| 2214 | |
| 2215 fprintf (stream, "static void dereg_frame () {\n"); | |
| 2216 fprintf (stream, "\t__deregister_frame_info (frame_table);\n"); | |
| 2217 fprintf (stream, "\t}\n"); | |
| 2218 } | |
| 2219 | |
| 2220 fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n"); | |
| 2221 fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number + frames); | |
| 2222 write_list (stream, "\t", constructors.first); | |
| 2223 if (frames) | |
| 2224 fprintf (stream, "\treg_frame,\n"); | |
| 2225 fprintf (stream, "\t0\n};\n\n"); | |
| 2226 | |
| 2227 write_list_with_asm (stream, "extern entry_pt ", destructors.first); | |
| 2228 | |
| 2229 fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n"); | |
| 2230 fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number + frames); | |
| 2231 write_list (stream, "\t", destructors.first); | |
| 2232 if (frames) | |
| 2233 fprintf (stream, "\tdereg_frame,\n"); | |
| 2234 fprintf (stream, "\t0\n};\n\n"); | |
| 2235 | |
| 2236 fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN); | |
| 2237 fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN); | |
| 2238 } | |
| 2239 #endif /* ! LD_INIT_SWITCH */ | |
| 2240 | |
| 2241 static void | |
| 2242 write_c_file (FILE *stream, const char *name) | |
| 2243 { | |
| 2244 #ifndef LD_INIT_SWITCH | |
| 2245 if (! shared_obj) | |
| 2246 write_c_file_glob (stream, name); | |
| 2247 else | |
| 2248 #endif | |
| 2249 write_c_file_stat (stream, name); | |
| 2250 } | |
| 2251 | |
| 2252 #ifdef COLLECT_EXPORT_LIST | |
| 2253 static void | |
| 2254 write_aix_file (FILE *stream, struct id *list) | |
| 2255 { | |
| 2256 for (; list; list = list->next) | |
| 2257 { | |
| 2258 fputs (list->name, stream); | |
| 2259 putc ('\n', stream); | |
| 2260 } | |
| 2261 } | |
| 2262 #endif | |
| 2263 | |
| 2264 #ifdef OBJECT_FORMAT_NONE | |
| 2265 | |
|
63
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update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2266 /* Check to make sure the file is an LTO object file. */ |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
2267 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
2268 static bool |
|
63
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update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2269 maybe_lto_object_file (const char *prog_name) |
|
55
77e2b8dfacca
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diff
changeset
|
2270 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
2271 FILE *f; |
|
63
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update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2272 unsigned char buf[4]; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2273 int i; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2274 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2275 static unsigned char elfmagic[4] = { 0x7f, 'E', 'L', 'F' }; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2276 static unsigned char coffmagic[2] = { 0x4c, 0x01 }; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2277 static unsigned char coffmagic_x64[2] = { 0x64, 0x86 }; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2278 static unsigned char machomagic[4][4] = { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2279 { 0xcf, 0xfa, 0xed, 0xfe }, |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2280 { 0xce, 0xfa, 0xed, 0xfe }, |
|
b7f97abdc517
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55
diff
changeset
|
2281 { 0xfe, 0xed, 0xfa, 0xcf }, |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2282 { 0xfe, 0xed, 0xfa, 0xce } |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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diff
changeset
|
2283 }; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2284 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2285 f = fopen (prog_name, "rb"); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
2286 if (f == NULL) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
2287 return false; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
2288 if (fread (buf, sizeof (buf), 1, f) != 1) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
2289 buf[0] = 0; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
2290 fclose (f); |
|
63
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diff
changeset
|
2291 |
|
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diff
changeset
|
2292 if (memcmp (buf, elfmagic, sizeof (elfmagic)) == 0 |
|
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update gcc from gcc-4.5.0 to gcc-4.6
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diff
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|
2293 || memcmp (buf, coffmagic, sizeof (coffmagic)) == 0 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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diff
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|
2294 || memcmp (buf, coffmagic_x64, sizeof (coffmagic_x64)) == 0) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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diff
changeset
|
2295 return true; |
|
b7f97abdc517
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55
diff
changeset
|
2296 for (i = 0; i < 4; i++) |
|
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update gcc from gcc-4.5.0 to gcc-4.6
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diff
changeset
|
2297 if (memcmp (buf, machomagic[i], sizeof (machomagic[i])) == 0) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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diff
changeset
|
2298 return true; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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diff
changeset
|
2299 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2300 return false; |
|
55
77e2b8dfacca
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0
diff
changeset
|
2301 } |
|
77e2b8dfacca
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0
diff
changeset
|
2302 |
| 0 | 2303 /* Generic version to scan the name list of the loaded program for |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2304 the symbols g++ uses for static constructors and destructors. */ |
| 0 | 2305 |
| 2306 static void | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
2307 scan_prog_file (const char *prog_name, scanpass which_pass, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
2308 scanfilter filter) |
| 0 | 2309 { |
| 2310 void (*int_handler) (int); | |
| 2311 #ifdef SIGQUIT | |
| 2312 void (*quit_handler) (int); | |
| 2313 #endif | |
| 2314 char *real_nm_argv[4]; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
2315 const char **nm_argv = CONST_CAST2 (const char **, char**, real_nm_argv); |
| 0 | 2316 int argc = 0; |
| 2317 struct pex_obj *pex; | |
| 2318 const char *errmsg; | |
| 2319 int err; | |
| 2320 char *p, buf[1024]; | |
| 2321 FILE *inf; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
2322 int found_lto = 0; |
| 0 | 2323 |
| 2324 if (which_pass == PASS_SECOND) | |
| 2325 return; | |
| 2326 | |
|
63
b7f97abdc517
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55
diff
changeset
|
2327 /* LTO objects must be in a known format. This check prevents |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
2328 us from accepting an archive containing LTO objects, which |
| 111 | 2329 gcc cannot currently handle. */ |
|
63
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55
diff
changeset
|
2330 if (which_pass == PASS_LTOINFO && !maybe_lto_object_file (prog_name)) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
2331 return; |
|
77e2b8dfacca
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0
diff
changeset
|
2332 |
| 0 | 2333 /* If we do not have an `nm', complain. */ |
| 2334 if (nm_file_name == 0) | |
| 111 | 2335 fatal_error (input_location, "cannot find 'nm'"); |
| 0 | 2336 |
| 2337 nm_argv[argc++] = nm_file_name; | |
| 2338 if (NM_FLAGS[0] != '\0') | |
| 2339 nm_argv[argc++] = NM_FLAGS; | |
| 2340 | |
| 2341 nm_argv[argc++] = prog_name; | |
| 2342 nm_argv[argc++] = (char *) 0; | |
| 2343 | |
| 2344 /* Trace if needed. */ | |
| 111 | 2345 if (verbose) |
| 0 | 2346 { |
| 2347 const char **p_argv; | |
| 2348 const char *str; | |
| 2349 | |
| 2350 for (p_argv = &nm_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 pex = pex_init (PEX_USE_PIPES, "collect2", NULL); | |
| 2360 if (pex == NULL) | |
| 111 | 2361 fatal_error (input_location, "pex_init failed: %m"); |
| 0 | 2362 |
|
55
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update it from 4.4.3 to 4.5.0
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diff
changeset
|
2363 errmsg = pex_run (pex, 0, nm_file_name, real_nm_argv, NULL, HOST_BIT_BUCKET, |
|
77e2b8dfacca
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diff
changeset
|
2364 &err); |
| 0 | 2365 if (errmsg != NULL) |
| 2366 { | |
| 2367 if (err != 0) | |
| 2368 { | |
| 2369 errno = err; | |
| 111 | 2370 fatal_error (input_location, "%s: %m", _(errmsg)); |
| 0 | 2371 } |
| 2372 else | |
| 111 | 2373 fatal_error (input_location, errmsg); |
| 0 | 2374 } |
| 2375 | |
| 2376 int_handler = (void (*) (int)) signal (SIGINT, SIG_IGN); | |
| 2377 #ifdef SIGQUIT | |
| 2378 quit_handler = (void (*) (int)) signal (SIGQUIT, SIG_IGN); | |
| 2379 #endif | |
| 2380 | |
| 2381 inf = pex_read_output (pex, 0); | |
| 2382 if (inf == NULL) | |
| 111 | 2383 fatal_error (input_location, "can't open nm output: %m"); |
| 0 | 2384 |
| 2385 if (debug) | |
|
55
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diff
changeset
|
2386 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
2387 if (which_pass == PASS_LTOINFO) |
|
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diff
changeset
|
2388 fprintf (stderr, "\nnm output with LTO info marker symbol.\n"); |
|
77e2b8dfacca
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diff
changeset
|
2389 else |
|
77e2b8dfacca
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0
diff
changeset
|
2390 fprintf (stderr, "\nnm output with constructors/destructors.\n"); |
|
77e2b8dfacca
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0
diff
changeset
|
2391 } |
| 0 | 2392 |
| 2393 /* Read each line of nm output. */ | |
| 2394 while (fgets (buf, sizeof buf, inf) != (char *) 0) | |
| 2395 { | |
| 2396 int ch, ch2; | |
| 2397 char *name, *end; | |
| 2398 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
2399 if (debug) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
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0
diff
changeset
|
2400 fprintf (stderr, "\t%s\n", buf); |
|
77e2b8dfacca
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diff
changeset
|
2401 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
2402 if (which_pass == PASS_LTOINFO) |
|
77e2b8dfacca
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diff
changeset
|
2403 { |
|
77e2b8dfacca
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diff
changeset
|
2404 if (found_lto) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
2405 continue; |
|
77e2b8dfacca
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0
diff
changeset
|
2406 |
|
77e2b8dfacca
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0
diff
changeset
|
2407 /* Look for the LTO info marker symbol, and add filename to |
|
77e2b8dfacca
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diff
changeset
|
2408 the LTO objects list if found. */ |
|
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|
2409 for (p = buf; (ch = *p) != '\0' && ch != '\n'; p++) |
|
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|
2410 if (ch == ' ' && p[1] == '_' && p[2] == '_' |
|
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|
2411 && (strncmp (p + (p[3] == '_' ? 2 : 1), "__gnu_lto_v1", 12) == 0) |
|
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|
2412 && ISSPACE (p[p[3] == '_' ? 14 : 13])) |
|
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|
2413 { |
|
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|
2414 add_lto_object (<o_objects, prog_name); |
|
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|
2415 |
|
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|
2416 /* We need to read all the input, so we can't just |
|
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|
2417 return here. But we can avoid useless work. */ |
|
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|
2418 found_lto = 1; |
|
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|
2419 |
|
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|
2420 break; |
|
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|
2421 } |
|
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|
2422 |
|
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|
2423 continue; |
|
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|
2424 } |
|
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|
2425 |
| 0 | 2426 /* If it contains a constructor or destructor name, add the name |
|
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|
2427 to the appropriate list unless this is a kind of symbol we're |
|
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|
2428 not supposed to even consider. */ |
| 0 | 2429 |
| 2430 for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++) | |
| 2431 if (ch == ' ' && p[1] == 'U' && p[2] == ' ') | |
| 2432 break; | |
| 2433 | |
| 2434 if (ch != '_') | |
| 2435 continue; | |
| 2436 | |
| 2437 name = p; | |
| 2438 /* Find the end of the symbol name. | |
| 2439 Do not include `|', because Encore nm can tack that on the end. */ | |
| 2440 for (end = p; (ch2 = *end) != '\0' && !ISSPACE (ch2) && ch2 != '|'; | |
| 2441 end++) | |
| 2442 continue; | |
| 2443 | |
| 2444 | |
| 2445 *end = '\0'; | |
| 111 | 2446 |
| 0 | 2447 switch (is_ctor_dtor (name)) |
| 2448 { | |
| 2449 case SYM_CTOR: | |
|
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|
2450 if (! (filter & SCAN_CTOR)) |
|
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|
2451 break; |
| 0 | 2452 if (which_pass != PASS_LIB) |
| 2453 add_to_list (&constructors, name); | |
| 2454 break; | |
| 2455 | |
| 2456 case SYM_DTOR: | |
|
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|
2457 if (! (filter & SCAN_DTOR)) |
|
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|
2458 break; |
| 0 | 2459 if (which_pass != PASS_LIB) |
| 2460 add_to_list (&destructors, name); | |
| 2461 break; | |
| 2462 | |
| 2463 case SYM_INIT: | |
|
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|
2464 if (! (filter & SCAN_INIT)) |
|
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|
2465 break; |
| 0 | 2466 if (which_pass != PASS_LIB) |
| 111 | 2467 fatal_error (input_location, "init function found in object %s", |
| 2468 prog_name); | |
| 0 | 2469 #ifndef LD_INIT_SWITCH |
| 2470 add_to_list (&constructors, name); | |
| 2471 #endif | |
| 2472 break; | |
| 2473 | |
| 2474 case SYM_FINI: | |
|
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|
2475 if (! (filter & SCAN_FINI)) |
|
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diff
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|
2476 break; |
| 0 | 2477 if (which_pass != PASS_LIB) |
| 111 | 2478 fatal_error (input_location, "fini function found in object %s", |
| 2479 prog_name); | |
| 0 | 2480 #ifndef LD_FINI_SWITCH |
| 2481 add_to_list (&destructors, name); | |
| 2482 #endif | |
| 2483 break; | |
| 2484 | |
| 2485 case SYM_DWEH: | |
|
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changeset
|
2486 if (! (filter & SCAN_DWEH)) |
|
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|
2487 break; |
| 0 | 2488 if (which_pass != PASS_LIB) |
| 2489 add_to_list (&frame_tables, name); | |
| 2490 break; | |
| 2491 | |
| 2492 default: /* not a constructor or destructor */ | |
| 2493 continue; | |
| 2494 } | |
| 2495 } | |
| 2496 | |
| 2497 if (debug) | |
| 2498 fprintf (stderr, "\n"); | |
| 2499 | |
| 2500 do_wait (nm_file_name, pex); | |
| 2501 | |
| 2502 signal (SIGINT, int_handler); | |
| 2503 #ifdef SIGQUIT | |
| 2504 signal (SIGQUIT, quit_handler); | |
| 2505 #endif | |
| 2506 } | |
| 2507 | |
| 2508 #ifdef LDD_SUFFIX | |
| 2509 | |
| 2510 /* Use the List Dynamic Dependencies program to find shared libraries that | |
| 2511 the output file depends upon and their initialization/finalization | |
| 2512 routines, if any. */ | |
| 2513 | |
| 2514 static void | |
| 2515 scan_libraries (const char *prog_name) | |
| 2516 { | |
| 2517 static struct head libraries; /* list of shared libraries found */ | |
| 2518 struct id *list; | |
| 2519 void (*int_handler) (int); | |
| 2520 #ifdef SIGQUIT | |
| 2521 void (*quit_handler) (int); | |
| 2522 #endif | |
| 2523 char *real_ldd_argv[4]; | |
|
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|
2524 const char **ldd_argv = CONST_CAST2 (const char **, char **, real_ldd_argv); |
| 0 | 2525 int argc = 0; |
| 2526 struct pex_obj *pex; | |
| 2527 const char *errmsg; | |
| 2528 int err; | |
| 2529 char buf[1024]; | |
| 2530 FILE *inf; | |
| 2531 | |
| 2532 /* If we do not have an `ldd', complain. */ | |
| 2533 if (ldd_file_name == 0) | |
| 2534 { | |
| 2535 error ("cannot find 'ldd'"); | |
| 2536 return; | |
| 2537 } | |
| 2538 | |
| 2539 ldd_argv[argc++] = ldd_file_name; | |
| 2540 ldd_argv[argc++] = prog_name; | |
| 2541 ldd_argv[argc++] = (char *) 0; | |
| 2542 | |
| 2543 /* Trace if needed. */ | |
| 111 | 2544 if (verbose) |
| 0 | 2545 { |
| 2546 const char **p_argv; | |
| 2547 const char *str; | |
| 2548 | |
| 2549 for (p_argv = &ldd_argv[0]; (str = *p_argv) != (char *) 0; p_argv++) | |
| 2550 fprintf (stderr, " %s", str); | |
| 2551 | |
| 2552 fprintf (stderr, "\n"); | |
| 2553 } | |
| 2554 | |
| 2555 fflush (stdout); | |
| 2556 fflush (stderr); | |
| 2557 | |
| 2558 pex = pex_init (PEX_USE_PIPES, "collect2", NULL); | |
| 2559 if (pex == NULL) | |
| 111 | 2560 fatal_error (input_location, "pex_init failed: %m"); |
| 0 | 2561 |
| 2562 errmsg = pex_run (pex, 0, ldd_file_name, real_ldd_argv, NULL, NULL, &err); | |
| 2563 if (errmsg != NULL) | |
| 2564 { | |
| 2565 if (err != 0) | |
| 2566 { | |
| 2567 errno = err; | |
| 111 | 2568 fatal_error (input_location, "%s: %m", _(errmsg)); |
| 0 | 2569 } |
| 2570 else | |
| 111 | 2571 fatal_error (input_location, errmsg); |
| 0 | 2572 } |
| 2573 | |
| 2574 int_handler = (void (*) (int)) signal (SIGINT, SIG_IGN); | |
| 2575 #ifdef SIGQUIT | |
| 2576 quit_handler = (void (*) (int)) signal (SIGQUIT, SIG_IGN); | |
| 2577 #endif | |
| 2578 | |
| 2579 inf = pex_read_output (pex, 0); | |
| 2580 if (inf == NULL) | |
| 111 | 2581 fatal_error (input_location, "can't open ldd output: %m"); |
| 0 | 2582 |
| 2583 if (debug) | |
| 2584 notice ("\nldd output with constructors/destructors.\n"); | |
| 2585 | |
| 2586 /* Read each line of ldd output. */ | |
| 2587 while (fgets (buf, sizeof buf, inf) != (char *) 0) | |
| 2588 { | |
| 2589 int ch2; | |
| 2590 char *name, *end, *p = buf; | |
| 2591 | |
| 2592 /* Extract names of libraries and add to list. */ | |
| 2593 PARSE_LDD_OUTPUT (p); | |
| 2594 if (p == 0) | |
| 2595 continue; | |
| 2596 | |
| 2597 name = p; | |
| 2598 if (strncmp (name, "not found", sizeof ("not found") - 1) == 0) | |
| 111 | 2599 fatal_error (input_location, "dynamic dependency %s not found", buf); |
| 0 | 2600 |
| 2601 /* Find the end of the symbol name. */ | |
| 2602 for (end = p; | |
| 2603 (ch2 = *end) != '\0' && ch2 != '\n' && !ISSPACE (ch2) && ch2 != '|'; | |
| 2604 end++) | |
| 2605 continue; | |
| 2606 *end = '\0'; | |
| 2607 | |
| 2608 if (access (name, R_OK) == 0) | |
| 2609 add_to_list (&libraries, name); | |
| 2610 else | |
| 111 | 2611 fatal_error (input_location, "unable to open dynamic dependency '%s'", |
| 2612 buf); | |
| 0 | 2613 |
| 2614 if (debug) | |
| 2615 fprintf (stderr, "\t%s\n", buf); | |
| 2616 } | |
| 2617 if (debug) | |
| 2618 fprintf (stderr, "\n"); | |
| 2619 | |
| 2620 do_wait (ldd_file_name, pex); | |
| 2621 | |
| 2622 signal (SIGINT, int_handler); | |
| 2623 #ifdef SIGQUIT | |
| 2624 signal (SIGQUIT, quit_handler); | |
| 2625 #endif | |
| 2626 | |
| 2627 /* Now iterate through the library list adding their symbols to | |
| 2628 the list. */ | |
| 2629 for (list = libraries.first; list; list = list->next) | |
|
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|
2630 scan_prog_file (list->name, PASS_LIB, SCAN_ALL); |
| 0 | 2631 } |
| 2632 | |
| 2633 #endif /* LDD_SUFFIX */ | |
| 2634 | |
| 2635 #endif /* OBJECT_FORMAT_NONE */ | |
| 2636 | |
| 2637 | |
| 2638 /* | |
| 2639 * COFF specific stuff. | |
| 2640 */ | |
| 2641 | |
| 2642 #ifdef OBJECT_FORMAT_COFF | |
| 2643 | |
| 2644 #if defined (EXTENDED_COFF) | |
| 2645 | |
| 111 | 2646 # define GCC_SYMBOLS(X) (SYMHEADER (X).isymMax + SYMHEADER (X).iextMax) |
| 0 | 2647 # define GCC_SYMENT SYMR |
| 2648 # define GCC_OK_SYMBOL(X) ((X).st == stProc || (X).st == stGlobal) | |
| 2649 # define GCC_SYMINC(X) (1) | |
| 111 | 2650 # define GCC_SYMZERO(X) (SYMHEADER (X).isymMax) |
| 2651 # define GCC_CHECK_HDR(X) (PSYMTAB (X) != 0) | |
| 0 | 2652 |
| 2653 #else | |
| 2654 | |
| 111 | 2655 # define GCC_SYMBOLS(X) (HEADER (ldptr).f_nsyms) |
| 0 | 2656 # define GCC_SYMENT SYMENT |
| 2657 # if defined (C_WEAKEXT) | |
| 2658 # define GCC_OK_SYMBOL(X) \ | |
| 2659 (((X).n_sclass == C_EXT || (X).n_sclass == C_WEAKEXT) && \ | |
| 2660 ((X).n_scnum > N_UNDEF) && \ | |
| 2661 (aix64_flag \ | |
| 2662 || (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) \ | |
| 2663 || ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT)))) | |
| 2664 # define GCC_UNDEF_SYMBOL(X) \ | |
| 2665 (((X).n_sclass == C_EXT || (X).n_sclass == C_WEAKEXT) && \ | |
| 2666 ((X).n_scnum == N_UNDEF)) | |
| 2667 # else | |
| 2668 # define GCC_OK_SYMBOL(X) \ | |
| 2669 (((X).n_sclass == C_EXT) && \ | |
| 2670 ((X).n_scnum > N_UNDEF) && \ | |
| 2671 (aix64_flag \ | |
| 2672 || (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) \ | |
| 2673 || ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT)))) | |
| 2674 # define GCC_UNDEF_SYMBOL(X) \ | |
| 2675 (((X).n_sclass == C_EXT) && ((X).n_scnum == N_UNDEF)) | |
| 2676 # endif | |
| 2677 # define GCC_SYMINC(X) ((X).n_numaux+1) | |
| 2678 # define GCC_SYMZERO(X) 0 | |
| 2679 | |
| 2680 /* 0757 = U803XTOCMAGIC (AIX 4.3) and 0767 = U64_TOCMAGIC (AIX V5) */ | |
|
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|
2681 #if TARGET_AIX_VERSION >= 51 |
| 0 | 2682 # define GCC_CHECK_HDR(X) \ |
| 111 | 2683 (((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \ |
| 2684 || (HEADER (X).f_magic == 0767 && aix64_flag)) \ | |
| 2685 && !(HEADER (X).f_flags & F_LOADONLY)) | |
| 0 | 2686 #else |
| 2687 # define GCC_CHECK_HDR(X) \ | |
| 111 | 2688 (((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \ |
| 2689 || (HEADER (X).f_magic == 0757 && aix64_flag)) \ | |
| 2690 && !(HEADER (X).f_flags & F_LOADONLY)) | |
| 0 | 2691 #endif |
| 2692 | |
| 2693 #endif | |
| 2694 | |
| 2695 #ifdef COLLECT_EXPORT_LIST | |
| 2696 /* Array of standard AIX libraries which should not | |
| 2697 be scanned for ctors/dtors. */ | |
| 2698 static const char *const aix_std_libs[] = { | |
| 2699 "/unix", | |
| 2700 "/lib/libc.a", | |
| 2701 "/lib/libm.a", | |
| 2702 "/lib/libc_r.a", | |
| 2703 "/lib/libm_r.a", | |
| 2704 "/usr/lib/libc.a", | |
| 2705 "/usr/lib/libm.a", | |
| 2706 "/usr/lib/libc_r.a", | |
| 2707 "/usr/lib/libm_r.a", | |
| 2708 "/usr/lib/threads/libc.a", | |
| 2709 "/usr/ccs/lib/libc.a", | |
| 2710 "/usr/ccs/lib/libm.a", | |
| 2711 "/usr/ccs/lib/libc_r.a", | |
| 2712 "/usr/ccs/lib/libm_r.a", | |
| 2713 NULL | |
| 2714 }; | |
| 2715 | |
| 2716 /* This function checks the filename and returns 1 | |
| 2717 if this name matches the location of a standard AIX library. */ | |
| 2718 static int ignore_library (const char *); | |
| 2719 static int | |
| 2720 ignore_library (const char *name) | |
| 2721 { | |
|
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|
2722 const char *const *p; |
|
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diff
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|
2723 size_t length; |
|
77e2b8dfacca
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|
2724 |
|
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|
2725 if (target_system_root[0] != '\0') |
|
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|
2726 { |
|
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|
2727 length = strlen (target_system_root); |
|
77e2b8dfacca
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|
2728 if (strncmp (name, target_system_root, length) != 0) |
|
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changeset
|
2729 return 0; |
|
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changeset
|
2730 name += length; |
|
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|
2731 } |
|
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|
2732 for (p = &aix_std_libs[0]; *p != NULL; ++p) |
|
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|
2733 if (strcmp (name, *p) == 0) |
|
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|
2734 return 1; |
| 0 | 2735 return 0; |
| 2736 } | |
| 2737 #endif /* COLLECT_EXPORT_LIST */ | |
| 2738 | |
| 2739 #if defined (HAVE_DECL_LDGETNAME) && !HAVE_DECL_LDGETNAME | |
| 2740 extern char *ldgetname (LDFILE *, GCC_SYMENT *); | |
| 2741 #endif | |
| 2742 | |
| 2743 /* COFF version to scan the name list of the loaded program for | |
|
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changeset
|
2744 the symbols g++ uses for static constructors and destructors. */ |
| 0 | 2745 |
| 2746 static void | |
|
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|
2747 scan_prog_file (const char *prog_name, scanpass which_pass, |
|
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|
2748 scanfilter filter) |
| 0 | 2749 { |
| 2750 LDFILE *ldptr = NULL; | |
| 2751 int sym_index, sym_count; | |
| 2752 int is_shared = 0; | |
| 2753 | |
| 2754 if (which_pass != PASS_FIRST && which_pass != PASS_OBJ) | |
| 2755 return; | |
| 2756 | |
| 2757 #ifdef COLLECT_EXPORT_LIST | |
| 2758 /* We do not need scanning for some standard C libraries. */ | |
| 2759 if (which_pass == PASS_FIRST && ignore_library (prog_name)) | |
| 2760 return; | |
| 2761 | |
| 2762 /* On AIX we have a loop, because there is not much difference | |
| 2763 between an object and an archive. This trick allows us to | |
| 2764 eliminate scan_libraries() function. */ | |
| 2765 do | |
| 2766 { | |
| 2767 #endif | |
| 2768 /* Some platforms (e.g. OSF4) declare ldopen as taking a | |
| 2769 non-const char * filename parameter, even though it will not | |
| 2770 modify that string. So we must cast away const-ness here, | |
| 2771 using CONST_CAST to prevent complaints from -Wcast-qual. */ | |
| 2772 if ((ldptr = ldopen (CONST_CAST (char *, prog_name), ldptr)) != NULL) | |
| 2773 { | |
| 2774 if (! MY_ISCOFF (HEADER (ldptr).f_magic)) | |
| 111 | 2775 fatal_error (input_location, "%s: not a COFF file", prog_name); |
| 0 | 2776 |
| 2777 if (GCC_CHECK_HDR (ldptr)) | |
| 2778 { | |
| 2779 sym_count = GCC_SYMBOLS (ldptr); | |
| 2780 sym_index = GCC_SYMZERO (ldptr); | |
| 2781 | |
| 2782 #ifdef COLLECT_EXPORT_LIST | |
| 2783 /* Is current archive member a shared object? */ | |
| 2784 is_shared = HEADER (ldptr).f_flags & F_SHROBJ; | |
| 2785 #endif | |
| 2786 | |
| 2787 while (sym_index < sym_count) | |
| 2788 { | |
| 2789 GCC_SYMENT symbol; | |
| 2790 | |
| 2791 if (ldtbread (ldptr, sym_index, &symbol) <= 0) | |
| 2792 break; | |
| 2793 sym_index += GCC_SYMINC (symbol); | |
| 2794 | |
| 2795 if (GCC_OK_SYMBOL (symbol)) | |
| 2796 { | |
| 2797 char *name; | |
| 2798 | |
| 2799 if ((name = ldgetname (ldptr, &symbol)) == NULL) | |
| 2800 continue; /* Should never happen. */ | |
| 2801 | |
| 2802 #ifdef XCOFF_DEBUGGING_INFO | |
| 2803 /* All AIX function names have a duplicate entry | |
| 2804 beginning with a dot. */ | |
| 2805 if (*name == '.') | |
| 2806 ++name; | |
| 2807 #endif | |
| 2808 | |
| 2809 switch (is_ctor_dtor (name)) | |
| 2810 { | |
| 111 | 2811 #if TARGET_AIX_VERSION |
| 2812 /* Add AIX shared library initalisers/finalisers | |
| 2813 to the constructors/destructors list of the | |
| 2814 current module. */ | |
| 2815 case SYM_AIXI: | |
| 2816 if (! (filter & SCAN_CTOR)) | |
| 2817 break; | |
| 2818 if (is_shared && !aixlazy_flag) | |
| 2819 add_to_list (&constructors, name); | |
| 2820 break; | |
| 2821 | |
| 2822 case SYM_AIXD: | |
| 2823 if (! (filter & SCAN_DTOR)) | |
| 2824 break; | |
| 2825 if (is_shared && !aixlazy_flag) | |
| 2826 add_to_list (&destructors, name); | |
| 2827 break; | |
| 2828 #endif | |
| 2829 | |
| 0 | 2830 case SYM_CTOR: |
|
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|
2831 if (! (filter & SCAN_CTOR)) |
|
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|
2832 break; |
| 0 | 2833 if (! is_shared) |
| 2834 add_to_list (&constructors, name); | |
| 2835 #if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH) | |
| 2836 if (which_pass == PASS_OBJ) | |
| 2837 add_to_list (&exports, name); | |
| 2838 #endif | |
| 2839 break; | |
| 2840 | |
| 2841 case SYM_DTOR: | |
|
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|
2842 if (! (filter & SCAN_DTOR)) |
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|
2843 break; |
| 0 | 2844 if (! is_shared) |
| 2845 add_to_list (&destructors, name); | |
| 2846 #if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH) | |
| 2847 if (which_pass == PASS_OBJ) | |
| 2848 add_to_list (&exports, name); | |
| 2849 #endif | |
| 2850 break; | |
| 2851 | |
| 2852 #ifdef COLLECT_EXPORT_LIST | |
| 2853 case SYM_INIT: | |
|
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|
2854 if (! (filter & SCAN_INIT)) |
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|
2855 break; |
| 0 | 2856 #ifndef LD_INIT_SWITCH |
| 2857 if (is_shared) | |
| 2858 add_to_list (&constructors, name); | |
| 2859 #endif | |
| 2860 break; | |
| 2861 | |
| 2862 case SYM_FINI: | |
|
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|
2863 if (! (filter & SCAN_FINI)) |
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|
2864 break; |
| 0 | 2865 #ifndef LD_INIT_SWITCH |
| 2866 if (is_shared) | |
| 2867 add_to_list (&destructors, name); | |
| 2868 #endif | |
| 2869 break; | |
| 2870 #endif | |
| 2871 | |
| 2872 case SYM_DWEH: | |
|
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|
2873 if (! (filter & SCAN_DWEH)) |
|
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|
2874 break; |
| 0 | 2875 if (! is_shared) |
| 2876 add_to_list (&frame_tables, name); | |
| 2877 #if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH) | |
| 2878 if (which_pass == PASS_OBJ) | |
| 2879 add_to_list (&exports, name); | |
| 2880 #endif | |
| 2881 break; | |
| 2882 | |
| 2883 default: /* not a constructor or destructor */ | |
| 2884 #ifdef COLLECT_EXPORT_LIST | |
| 2885 /* Explicitly export all global symbols when | |
| 2886 building a shared object on AIX, but do not | |
| 2887 re-export symbols from another shared object | |
| 2888 and do not export symbols if the user | |
| 2889 provides an explicit export list. */ | |
| 2890 if (shared_obj && !is_shared | |
| 2891 && which_pass == PASS_OBJ && !export_flag) | |
| 111 | 2892 { |
| 2893 /* Do not auto-export __dso_handle or | |
| 2894 __gcc_unwind_dbase. They are required | |
| 2895 to be local to each module. */ | |
| 2896 if (strcmp(name, "__dso_handle") != 0 | |
| 2897 && strcmp(name, "__gcc_unwind_dbase") != 0) | |
| 2898 { | |
| 2899 add_to_list (&exports, name); | |
| 2900 } | |
| 2901 } | |
| 0 | 2902 #endif |
| 2903 continue; | |
| 2904 } | |
| 2905 | |
| 2906 if (debug) | |
| 2907 #if !defined(EXTENDED_COFF) | |
| 2908 fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n", | |
| 2909 symbol.n_scnum, symbol.n_sclass, | |
| 2910 (symbol.n_type ? "0" : ""), symbol.n_type, | |
| 2911 name); | |
| 2912 #else | |
| 2913 fprintf (stderr, | |
| 2914 "\tiss = %5d, value = %5ld, index = %5d, name = %s\n", | |
| 2915 symbol.iss, (long) symbol.value, symbol.index, name); | |
| 2916 #endif | |
| 2917 } | |
| 2918 } | |
| 2919 } | |
| 2920 #ifdef COLLECT_EXPORT_LIST | |
| 2921 else | |
| 2922 { | |
| 2923 /* If archive contains both 32-bit and 64-bit objects, | |
| 2924 we want to skip objects in other mode so mismatch normal. */ | |
| 2925 if (debug) | |
| 2926 fprintf (stderr, "%s : magic=%o aix64=%d mismatch\n", | |
| 2927 prog_name, HEADER (ldptr).f_magic, aix64_flag); | |
| 2928 } | |
| 2929 #endif | |
| 2930 } | |
| 2931 else | |
| 2932 { | |
| 111 | 2933 fatal_error (input_location, "%s: cannot open as COFF file", |
| 2934 prog_name); | |
| 0 | 2935 } |
| 2936 #ifdef COLLECT_EXPORT_LIST | |
| 2937 /* On AIX loop continues while there are more members in archive. */ | |
| 2938 } | |
| 2939 while (ldclose (ldptr) == FAILURE); | |
| 2940 #else | |
| 2941 /* Otherwise we simply close ldptr. */ | |
| 111 | 2942 (void) ldclose (ldptr); |
| 0 | 2943 #endif |
| 2944 } | |
| 2945 #endif /* OBJECT_FORMAT_COFF */ | |
| 2946 | |
| 2947 #ifdef COLLECT_EXPORT_LIST | |
| 2948 /* Given a library name without "lib" prefix, this function | |
| 2949 returns a full library name including a path. */ | |
| 2950 static char * | |
| 2951 resolve_lib_name (const char *name) | |
| 2952 { | |
| 2953 char *lib_buf; | |
| 2954 int i, j, l = 0; | |
| 2955 /* Library extensions for AIX dynamic linking. */ | |
| 2956 const char * const libexts[2] = {"a", "so"}; | |
| 2957 | |
| 2958 for (i = 0; libpaths[i]; i++) | |
| 2959 if (libpaths[i]->max_len > l) | |
| 2960 l = libpaths[i]->max_len; | |
| 2961 | |
| 111 | 2962 lib_buf = XNEWVEC (char, l + strlen (name) + 10); |
| 0 | 2963 |
| 2964 for (i = 0; libpaths[i]; i++) | |
| 2965 { | |
| 2966 struct prefix_list *list = libpaths[i]->plist; | |
| 2967 for (; list; list = list->next) | |
| 2968 { | |
| 2969 /* The following lines are needed because path_prefix list | |
| 111 | 2970 may contain directories both with trailing DIR_SEPARATOR and |
| 0 | 2971 without it. */ |
| 2972 const char *p = ""; | |
| 111 | 2973 if (!IS_DIR_SEPARATOR (list->prefix[strlen (list->prefix)-1])) |
| 0 | 2974 p = "/"; |
| 2975 for (j = 0; j < 2; j++) | |
| 2976 { | |
| 2977 sprintf (lib_buf, "%s%slib%s.%s", | |
| 2978 list->prefix, p, name, | |
| 2979 libexts[(j + aixrtl_flag) % 2]); | |
| 2980 if (debug) fprintf (stderr, "searching for: %s\n", lib_buf); | |
| 2981 if (file_exists (lib_buf)) | |
| 2982 { | |
| 2983 if (debug) fprintf (stderr, "found: %s\n", lib_buf); | |
| 2984 return (lib_buf); | |
| 2985 } | |
| 2986 } | |
| 2987 } | |
| 2988 } | |
| 2989 if (debug) | |
| 2990 fprintf (stderr, "not found\n"); | |
| 2991 else | |
| 111 | 2992 fatal_error (input_location, "library lib%s not found", name); |
| 0 | 2993 return (NULL); |
| 2994 } | |
| 2995 #endif /* COLLECT_EXPORT_LIST */ | |
|
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|
2996 |
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|
2997 #ifdef COLLECT_RUN_DSYMUTIL |
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|
2998 static int flag_dsym = false; |
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|
2999 static int flag_idsym = false; |
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|
3000 |
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|
3001 static void |
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|
3002 process_args (int *argcp, char **argv) { |
|
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|
3003 int i, j; |
|
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|
3004 int argc = *argcp; |
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|
3005 for (i=0; i<argc; ++i) |
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|
3006 { |
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|
3007 if (strcmp (argv[i], "-dsym") == 0) |
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|
3008 { |
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|
3009 flag_dsym = true; |
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|
3010 /* Remove the flag, as we handle all processing for it. */ |
|
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|
3011 j = i; |
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|
3012 do |
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|
3013 argv[j] = argv[j+1]; |
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|
3014 while (++j < argc); |
|
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|
3015 --i; |
|
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|
3016 argc = --(*argcp); |
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|
3017 } |
|
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|
3018 else if (strcmp (argv[i], "-idsym") == 0) |
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|
3019 { |
|
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|
3020 flag_idsym = true; |
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|
3021 /* Remove the flag, as we handle all processing for it. */ |
|
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|
3022 j = i; |
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|
3023 do |
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|
3024 argv[j] = argv[j+1]; |
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|
3025 while (++j < argc); |
|
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|
3026 --i; |
|
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|
3027 argc = --(*argcp); |
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|
3028 } |
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|
3029 } |
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|
3030 } |
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|
3031 |
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|
3032 static void |
|
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|
3033 do_dsymutil (const char *output_file) { |
|
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|
3034 const char *dsymutil = DSYMUTIL + 1; |
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|
3035 struct pex_obj *pex; |
|
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|
3036 char **real_argv = XCNEWVEC (char *, 3); |
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3037 const char ** argv = CONST_CAST2 (const char **, char **, |
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3038 real_argv); |
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3039 |
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3040 argv[0] = dsymutil; |
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3041 argv[1] = output_file; |
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3042 argv[2] = (char *) 0; |
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3043 |
| 111 | 3044 pex = collect_execute (dsymutil, real_argv, NULL, NULL, |
| 3045 PEX_LAST | PEX_SEARCH, false); | |
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3046 do_wait (dsymutil, pex); |
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3047 } |
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3048 |
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3049 static void |
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3050 post_ld_pass (bool temp_file) { |
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3051 if (!(temp_file && flag_idsym) && !flag_dsym) |
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3052 return; |
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3053 |
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3054 do_dsymutil (output_file); |
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3055 } |
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3056 #else |
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3057 static void |
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3058 process_args (int *argcp ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) { } |
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3059 static void post_ld_pass (bool temp_file ATTRIBUTE_UNUSED) { } |
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3060 #endif |