Mercurial > hg > CbC > CbC_gcc
annotate gcc/collect2.c @ 94:8bd24be3a2df
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| author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Tue, 17 Jan 2012 05:01:16 +0900 |
| parents | f6334be47118 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* Collect static initialization info into data structures that can be |
| 2 traversed by C++ initialization and finalization routines. | |
| 3 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, | |
|
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4 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010 |
| 0 | 5 Free Software Foundation, Inc. |
| 6 Contributed by Chris Smith (csmith@convex.com). | |
| 7 Heavily modified by Michael Meissner (meissner@cygnus.com), | |
| 8 Per Bothner (bothner@cygnus.com), and John Gilmore (gnu@cygnus.com). | |
| 9 | |
| 10 This file is part of GCC. | |
| 11 | |
| 12 GCC is free software; you can redistribute it and/or modify it under | |
| 13 the terms of the GNU General Public License as published by the Free | |
| 14 Software Foundation; either version 3, or (at your option) any later | |
| 15 version. | |
| 16 | |
| 17 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 18 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 19 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 20 for more details. | |
| 21 | |
| 22 You should have received a copy of the GNU General Public License | |
| 23 along with GCC; see the file COPYING3. If not see | |
| 24 <http://www.gnu.org/licenses/>. */ | |
| 25 | |
| 26 | |
| 27 /* Build tables of static constructors and destructors and run ld. */ | |
| 28 | |
| 29 #include "config.h" | |
| 30 #include "system.h" | |
| 31 #include "coretypes.h" | |
| 32 #include "tm.h" | |
| 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" |
| 0 | 46 #include "demangle.h" |
| 47 #include "obstack.h" | |
| 48 #include "intl.h" | |
| 49 #include "version.h" | |
| 50 | |
| 51 /* On certain systems, we have code that works by scanning the object file | |
| 52 directly. But this code uses system-specific header files and library | |
| 53 functions, so turn it off in a cross-compiler. Likewise, the names of | |
| 54 the utilities are not correct for a cross-compiler; we have to hope that | |
| 55 cross-versions are in the proper directories. */ | |
| 56 | |
| 57 #ifdef CROSS_DIRECTORY_STRUCTURE | |
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58 #ifndef CROSS_AIX_SUPPORT |
| 0 | 59 #undef OBJECT_FORMAT_COFF |
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60 #endif |
| 0 | 61 #undef MD_EXEC_PREFIX |
| 62 #undef REAL_LD_FILE_NAME | |
| 63 #undef REAL_NM_FILE_NAME | |
| 64 #undef REAL_STRIP_FILE_NAME | |
| 65 #endif | |
| 66 | |
| 67 /* If we cannot use a special method, use the ordinary one: | |
| 68 run nm to find what symbols are present. | |
| 69 In a cross-compiler, this means you need a cross nm, | |
| 70 but that is not quite as unpleasant as special headers. */ | |
| 71 | |
| 72 #if !defined (OBJECT_FORMAT_COFF) | |
| 73 #define OBJECT_FORMAT_NONE | |
| 74 #endif | |
| 75 | |
| 76 #ifdef OBJECT_FORMAT_COFF | |
| 77 | |
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78 #ifndef CROSS_DIRECTORY_STRUCTURE |
| 0 | 79 #include <a.out.h> |
| 80 #include <ar.h> | |
| 81 | |
| 82 #ifdef UMAX | |
| 83 #include <sgs.h> | |
| 84 #endif | |
| 85 | |
| 86 /* Many versions of ldfcn.h define these. */ | |
| 87 #ifdef FREAD | |
| 88 #undef FREAD | |
| 89 #undef FWRITE | |
| 90 #endif | |
| 91 | |
| 92 #include <ldfcn.h> | |
|
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93 #endif |
| 0 | 94 |
| 95 /* Some systems have an ISCOFF macro, but others do not. In some cases | |
| 96 the macro may be wrong. MY_ISCOFF is defined in tm.h files for machines | |
| 97 that either do not have an ISCOFF macro in /usr/include or for those | |
| 98 where it is wrong. */ | |
| 99 | |
| 100 #ifndef MY_ISCOFF | |
| 101 #define MY_ISCOFF(X) ISCOFF (X) | |
| 102 #endif | |
| 103 | |
| 104 #endif /* OBJECT_FORMAT_COFF */ | |
| 105 | |
| 106 #ifdef OBJECT_FORMAT_NONE | |
| 107 | |
| 108 /* Default flags to pass to nm. */ | |
| 109 #ifndef NM_FLAGS | |
| 110 #define NM_FLAGS "-n" | |
| 111 #endif | |
| 112 | |
| 113 #endif /* OBJECT_FORMAT_NONE */ | |
| 114 | |
| 115 /* Some systems use __main in a way incompatible with its use in gcc, in these | |
| 116 cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to | |
| 117 give the same symbol without quotes for an alternative entry point. */ | |
| 118 #ifndef NAME__MAIN | |
| 119 #define NAME__MAIN "__main" | |
| 120 #endif | |
| 121 | |
| 122 /* This must match tree.h. */ | |
| 123 #define DEFAULT_INIT_PRIORITY 65535 | |
| 124 | |
| 125 #ifndef COLLECT_SHARED_INIT_FUNC | |
| 126 #define COLLECT_SHARED_INIT_FUNC(STREAM, FUNC) \ | |
| 127 fprintf ((STREAM), "void _GLOBAL__DI() {\n\t%s();\n}\n", (FUNC)) | |
| 128 #endif | |
| 129 #ifndef COLLECT_SHARED_FINI_FUNC | |
| 130 #define COLLECT_SHARED_FINI_FUNC(STREAM, FUNC) \ | |
| 131 fprintf ((STREAM), "void _GLOBAL__DD() {\n\t%s();\n}\n", (FUNC)) | |
| 132 #endif | |
| 133 | |
| 134 #ifdef LDD_SUFFIX | |
| 135 #define SCAN_LIBRARIES | |
| 136 #endif | |
| 137 | |
| 138 #ifndef SHLIB_SUFFIX | |
| 139 #define SHLIB_SUFFIX ".so" | |
| 140 #endif | |
| 141 | |
| 142 #ifdef USE_COLLECT2 | |
| 143 int do_collecting = 1; | |
| 144 #else | |
| 145 int do_collecting = 0; | |
| 146 #endif | |
| 147 | |
|
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148 /* Cook up an always defined indication of whether we proceed the |
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149 "EXPORT_LIST" way. */ |
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150 |
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151 #ifdef COLLECT_EXPORT_LIST |
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152 #define DO_COLLECT_EXPORT_LIST 1 |
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153 #else |
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154 #define DO_COLLECT_EXPORT_LIST 0 |
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155 #endif |
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156 |
| 0 | 157 /* Nonzero if we should suppress the automatic demangling of identifiers |
| 158 in linker error messages. Set from COLLECT_NO_DEMANGLE. */ | |
| 159 int no_demangle; | |
| 160 | |
| 161 /* Linked lists of constructor and destructor names. */ | |
| 162 | |
| 163 struct id | |
| 164 { | |
| 165 struct id *next; | |
| 166 int sequence; | |
| 167 char name[1]; | |
| 168 }; | |
| 169 | |
| 170 struct head | |
| 171 { | |
| 172 struct id *first; | |
| 173 struct id *last; | |
| 174 int number; | |
| 175 }; | |
| 176 | |
|
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177 bool vflag; /* true if -v or --version */ |
| 0 | 178 static int rflag; /* true if -r */ |
| 179 static int strip_flag; /* true if -s */ | |
| 180 static const char *demangle_flag; | |
| 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 */ | |
| 185 #endif | |
| 186 | |
|
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187 enum lto_mode_d { |
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188 LTO_MODE_NONE, /* Not doing LTO. */ |
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189 LTO_MODE_LTO, /* Normal LTO. */ |
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190 LTO_MODE_WHOPR /* WHOPR. */ |
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191 }; |
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192 |
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193 /* Current LTO mode. */ |
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194 static enum lto_mode_d lto_mode = LTO_MODE_NONE; |
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195 |
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196 bool debug; /* true if -debug */ |
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197 bool helpflag; /* true if --help */ |
| 0 | 198 |
| 199 static int shared_obj; /* true if -shared */ | |
| 200 | |
| 201 static const char *c_file; /* <xxx>.c for constructor/destructor list. */ | |
| 202 static const char *o_file; /* <xxx>.o for constructor/destructor list. */ | |
| 203 #ifdef COLLECT_EXPORT_LIST | |
| 204 static const char *export_file; /* <xxx>.x for AIX export list. */ | |
| 205 #endif | |
|
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206 static char **lto_o_files; /* Output files for LTO. */ |
| 0 | 207 const char *ldout; /* File for ld stdout. */ |
| 208 const char *lderrout; /* File for ld stderr. */ | |
| 209 static const char *output_file; /* Output file for ld. */ | |
| 210 static const char *nm_file_name; /* pathname of nm */ | |
| 211 #ifdef LDD_SUFFIX | |
| 212 static const char *ldd_file_name; /* pathname of ldd (or equivalent) */ | |
| 213 #endif | |
| 214 static const char *strip_file_name; /* pathname of strip */ | |
| 215 const char *c_file_name; /* pathname of gcc */ | |
| 216 static char *initname, *fininame; /* names of init and fini funcs */ | |
| 217 | |
| 218 static struct head constructors; /* list of constructors found */ | |
| 219 static struct head destructors; /* list of destructors found */ | |
| 220 #ifdef COLLECT_EXPORT_LIST | |
| 221 static struct head exports; /* list of exported symbols */ | |
| 222 #endif | |
| 223 static struct head frame_tables; /* list of frame unwind info tables */ | |
| 224 | |
| 225 static bool at_file_supplied; /* Whether to use @file arguments */ | |
| 226 static char *response_file; /* Name of any current response file */ | |
| 227 | |
| 228 struct obstack temporary_obstack; | |
| 229 char * temporary_firstobj; | |
| 230 | |
|
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231 /* A string that must be prepended to a target OS path in order to find |
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232 it on the host system. */ |
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233 #ifdef TARGET_SYSTEM_ROOT |
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234 static const char *target_system_root = TARGET_SYSTEM_ROOT; |
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235 #else |
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236 static const char *target_system_root = ""; |
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237 #endif |
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238 |
| 0 | 239 /* Structure to hold all the directories in which to search for files to |
| 240 execute. */ | |
| 241 | |
| 242 struct prefix_list | |
| 243 { | |
| 244 const char *prefix; /* String to prepend to the path. */ | |
| 245 struct prefix_list *next; /* Next in linked list. */ | |
| 246 }; | |
| 247 | |
| 248 struct path_prefix | |
| 249 { | |
| 250 struct prefix_list *plist; /* List of prefixes to try */ | |
| 251 int max_len; /* Max length of a prefix in PLIST */ | |
| 252 const char *name; /* Name of this list (used in config stuff) */ | |
| 253 }; | |
| 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 | |
| 285 typedef enum { | |
| 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 */ | |
| 292 SYM_DWEH = 5 /* DWARF exception handling table */ | |
| 293 } symkind; | |
| 294 | |
| 295 static symkind is_ctor_dtor (const char *); | |
| 296 | |
| 297 static void handler (int); | |
| 298 static char *find_a_file (struct path_prefix *, const char *); | |
| 299 static void add_prefix (struct path_prefix *, const char *); | |
| 300 static void prefix_from_env (const char *, struct path_prefix *); | |
| 301 static void prefix_from_string (const char *, struct path_prefix *); | |
| 302 static void do_wait (const char *, struct pex_obj *); | |
| 303 static void fork_execute (const char *, char **); | |
| 304 static void maybe_unlink (const char *); | |
|
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305 static void maybe_unlink_list (char **); |
| 0 | 306 static void add_to_list (struct head *, const char *); |
| 307 static int extract_init_priority (const char *); | |
| 308 static void sort_ids (struct head *); | |
| 309 static void write_list (FILE *, const char *, struct id *); | |
| 310 #ifdef COLLECT_EXPORT_LIST | |
| 311 static void dump_list (FILE *, const char *, struct id *); | |
| 312 #endif | |
| 313 #if 0 | |
| 314 static void dump_prefix_list (FILE *, const char *, struct prefix_list *); | |
| 315 #endif | |
| 316 static void write_list_with_asm (FILE *, const char *, struct id *); | |
| 317 static void write_c_file (FILE *, const char *); | |
| 318 static void write_c_file_stat (FILE *, const char *); | |
| 319 #ifndef LD_INIT_SWITCH | |
| 320 static void write_c_file_glob (FILE *, const char *); | |
| 321 #endif | |
| 322 #ifdef SCAN_LIBRARIES | |
| 323 static void scan_libraries (const char *); | |
| 324 #endif | |
| 325 #if LINK_ELIMINATE_DUPLICATE_LDIRECTORIES | |
| 326 static int is_in_args (const char *, const char **, const char **); | |
| 327 #endif | |
| 328 #ifdef COLLECT_EXPORT_LIST | |
| 329 #if 0 | |
| 330 static int is_in_list (const char *, struct id *); | |
| 331 #endif | |
| 332 static void write_aix_file (FILE *, struct id *); | |
| 333 static char *resolve_lib_name (const char *); | |
| 334 #endif | |
| 335 static char *extract_string (const char **); | |
|
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336 static void post_ld_pass (bool); |
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337 static void process_args (int *argcp, char **argv); |
|
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338 |
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339 /* Enumerations describing which pass this is for scanning the |
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340 program file ... */ |
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341 |
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342 typedef enum { |
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343 PASS_FIRST, /* without constructors */ |
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344 PASS_OBJ, /* individual objects */ |
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345 PASS_LIB, /* looking for shared libraries */ |
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346 PASS_SECOND, /* with constructors linked in */ |
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347 PASS_LTOINFO /* looking for objects with LTO info */ |
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348 } scanpass; |
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349 |
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350 /* ... and which kinds of symbols are to be considered. */ |
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351 |
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352 enum scanfilter_masks { |
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353 SCAN_NOTHING = 0, |
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354 |
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355 SCAN_CTOR = 1 << SYM_CTOR, |
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356 SCAN_DTOR = 1 << SYM_DTOR, |
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357 SCAN_INIT = 1 << SYM_INIT, |
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358 SCAN_FINI = 1 << SYM_FINI, |
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359 SCAN_DWEH = 1 << SYM_DWEH, |
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360 SCAN_ALL = ~0 |
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361 }; |
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362 |
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363 /* This type is used for parameters and variables which hold |
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364 combinations of the flags in enum scanfilter_masks. */ |
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365 typedef int scanfilter; |
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366 |
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367 /* Scan the name list of the loaded program for the symbols g++ uses for |
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368 static constructors and destructors. |
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369 |
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370 The SCANPASS argument tells which collect processing pass this is for and |
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371 the SCANFILTER argument tells which kinds of symbols to consider in this |
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372 pass. Symbols of a special kind not in the filter mask are considered as |
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373 regular ones. |
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374 |
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375 The constructor table begins at __CTOR_LIST__ and contains a count of the |
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376 number of pointers (or -1 if the constructors are built in a separate |
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377 section by the linker), followed by the pointers to the constructor |
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378 functions, terminated with a null pointer. The destructor table has the |
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379 same format, and begins at __DTOR_LIST__. */ |
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380 |
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381 static void scan_prog_file (const char *, scanpass, scanfilter); |
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382 |
| 0 | 383 |
| 384 /* Delete tempfiles and exit function. */ | |
| 385 | |
| 386 void | |
| 387 collect_exit (int status) | |
| 388 { | |
| 389 if (c_file != 0 && c_file[0]) | |
| 390 maybe_unlink (c_file); | |
| 391 | |
| 392 if (o_file != 0 && o_file[0]) | |
| 393 maybe_unlink (o_file); | |
| 394 | |
| 395 #ifdef COLLECT_EXPORT_LIST | |
| 396 if (export_file != 0 && export_file[0]) | |
| 397 maybe_unlink (export_file); | |
| 398 #endif | |
| 399 | |
|
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400 if (lto_o_files) |
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401 maybe_unlink_list (lto_o_files); |
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402 |
| 0 | 403 if (ldout != 0 && ldout[0]) |
| 404 { | |
| 405 dump_file (ldout, stdout); | |
| 406 maybe_unlink (ldout); | |
| 407 } | |
| 408 | |
| 409 if (lderrout != 0 && lderrout[0]) | |
| 410 { | |
| 411 dump_file (lderrout, stderr); | |
| 412 maybe_unlink (lderrout); | |
| 413 } | |
| 414 | |
| 415 if (status != 0 && output_file != 0 && output_file[0]) | |
| 416 maybe_unlink (output_file); | |
| 417 | |
| 418 if (response_file) | |
| 419 maybe_unlink (response_file); | |
| 420 | |
| 421 exit (status); | |
| 422 } | |
| 423 | |
| 424 | |
| 425 /* Notify user of a non-error. */ | |
| 426 void | |
| 427 notice (const char *cmsgid, ...) | |
| 428 { | |
| 429 va_list ap; | |
| 430 | |
| 431 va_start (ap, cmsgid); | |
| 432 vfprintf (stderr, _(cmsgid), ap); | |
| 433 va_end (ap); | |
| 434 } | |
| 435 | |
|
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436 /* Notify user of a non-error, without translating the format string. */ |
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437 void |
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438 notice_translated (const char *cmsgid, ...) |
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439 { |
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440 va_list ap; |
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441 |
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442 va_start (ap, cmsgid); |
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443 vfprintf (stderr, cmsgid, ap); |
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444 va_end (ap); |
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445 } |
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446 |
| 0 | 447 /* Die when sys call fails. */ |
| 448 | |
| 449 void | |
| 450 fatal_perror (const char * cmsgid, ...) | |
| 451 { | |
| 452 int e = errno; | |
| 453 va_list ap; | |
| 454 | |
| 455 va_start (ap, cmsgid); | |
| 456 fprintf (stderr, "collect2: "); | |
| 457 vfprintf (stderr, _(cmsgid), ap); | |
| 458 fprintf (stderr, ": %s\n", xstrerror (e)); | |
| 459 va_end (ap); | |
| 460 | |
| 461 collect_exit (FATAL_EXIT_CODE); | |
| 462 } | |
| 463 | |
| 464 /* Just die. */ | |
| 465 | |
| 466 void | |
| 467 fatal (const char * cmsgid, ...) | |
| 468 { | |
| 469 va_list ap; | |
| 470 | |
| 471 va_start (ap, cmsgid); | |
| 472 fprintf (stderr, "collect2: "); | |
| 473 vfprintf (stderr, _(cmsgid), ap); | |
| 474 fprintf (stderr, "\n"); | |
| 475 va_end (ap); | |
| 476 | |
| 477 collect_exit (FATAL_EXIT_CODE); | |
| 478 } | |
| 479 | |
| 480 /* Write error message. */ | |
| 481 | |
| 482 void | |
| 483 error (const char * gmsgid, ...) | |
| 484 { | |
| 485 va_list ap; | |
| 486 | |
| 487 va_start (ap, gmsgid); | |
| 488 fprintf (stderr, "collect2: "); | |
| 489 vfprintf (stderr, _(gmsgid), ap); | |
| 490 fprintf (stderr, "\n"); | |
| 491 va_end(ap); | |
| 492 } | |
| 493 | |
| 494 /* In case obstack is linked in, and abort is defined to fancy_abort, | |
| 495 provide a default entry. */ | |
| 496 | |
| 497 void | |
| 498 fancy_abort (const char *file, int line, const char *func) | |
| 499 { | |
| 500 fatal ("internal gcc abort in %s, at %s:%d", func, file, line); | |
| 501 } | |
| 502 | |
| 503 static void | |
| 504 handler (int signo) | |
| 505 { | |
| 506 if (c_file != 0 && c_file[0]) | |
| 507 maybe_unlink (c_file); | |
| 508 | |
| 509 if (o_file != 0 && o_file[0]) | |
| 510 maybe_unlink (o_file); | |
| 511 | |
| 512 if (ldout != 0 && ldout[0]) | |
| 513 maybe_unlink (ldout); | |
| 514 | |
| 515 if (lderrout != 0 && lderrout[0]) | |
| 516 maybe_unlink (lderrout); | |
| 517 | |
| 518 #ifdef COLLECT_EXPORT_LIST | |
| 519 if (export_file != 0 && export_file[0]) | |
| 520 maybe_unlink (export_file); | |
| 521 #endif | |
| 522 | |
|
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523 if (lto_o_files) |
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524 maybe_unlink_list (lto_o_files); |
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525 |
| 0 | 526 if (response_file) |
| 527 maybe_unlink (response_file); | |
| 528 | |
| 529 signal (signo, SIG_DFL); | |
| 530 raise (signo); | |
| 531 } | |
| 532 | |
| 533 | |
| 534 int | |
| 535 file_exists (const char *name) | |
| 536 { | |
| 537 return access (name, R_OK) == 0; | |
| 538 } | |
| 539 | |
| 540 /* Parse a reasonable subset of shell quoting syntax. */ | |
| 541 | |
| 542 static char * | |
| 543 extract_string (const char **pp) | |
| 544 { | |
| 545 const char *p = *pp; | |
| 546 int backquote = 0; | |
| 547 int inside = 0; | |
| 548 | |
| 549 for (;;) | |
| 550 { | |
| 551 char c = *p; | |
| 552 if (c == '\0') | |
| 553 break; | |
| 554 ++p; | |
| 555 if (backquote) | |
| 556 obstack_1grow (&temporary_obstack, c); | |
| 557 else if (! inside && c == ' ') | |
| 558 break; | |
| 559 else if (! inside && c == '\\') | |
| 560 backquote = 1; | |
| 561 else if (c == '\'') | |
| 562 inside = !inside; | |
| 563 else | |
| 564 obstack_1grow (&temporary_obstack, c); | |
| 565 } | |
| 566 | |
| 567 obstack_1grow (&temporary_obstack, '\0'); | |
| 568 *pp = p; | |
| 569 return XOBFINISH (&temporary_obstack, char *); | |
| 570 } | |
| 571 | |
| 572 void | |
| 573 dump_file (const char *name, FILE *to) | |
| 574 { | |
| 575 FILE *stream = fopen (name, "r"); | |
| 576 | |
| 577 if (stream == 0) | |
| 578 return; | |
| 579 while (1) | |
| 580 { | |
| 581 int c; | |
| 582 while (c = getc (stream), | |
| 583 c != EOF && (ISIDNUM (c) || c == '$' || c == '.')) | |
| 584 obstack_1grow (&temporary_obstack, c); | |
| 585 if (obstack_object_size (&temporary_obstack) > 0) | |
| 586 { | |
| 587 const char *word, *p; | |
| 588 char *result; | |
| 589 obstack_1grow (&temporary_obstack, '\0'); | |
| 590 word = XOBFINISH (&temporary_obstack, const char *); | |
| 591 | |
| 592 if (*word == '.') | |
| 593 ++word, putc ('.', to); | |
| 594 p = word; | |
| 595 if (!strncmp (p, USER_LABEL_PREFIX, strlen (USER_LABEL_PREFIX))) | |
| 596 p += strlen (USER_LABEL_PREFIX); | |
| 597 | |
| 598 #ifdef HAVE_LD_DEMANGLE | |
| 599 result = 0; | |
| 600 #else | |
| 601 if (no_demangle) | |
| 602 result = 0; | |
| 603 else | |
| 604 result = cplus_demangle (p, DMGL_PARAMS | DMGL_ANSI | DMGL_VERBOSE); | |
| 605 #endif | |
| 606 | |
| 607 if (result) | |
| 608 { | |
| 609 int diff; | |
| 610 fputs (result, to); | |
| 611 | |
| 612 diff = strlen (word) - strlen (result); | |
| 613 while (diff > 0 && c == ' ') | |
| 614 --diff, putc (' ', to); | |
| 615 if (diff < 0 && c == ' ') | |
| 616 { | |
| 617 while (diff < 0 && c == ' ') | |
| 618 ++diff, c = getc (stream); | |
| 619 if (!ISSPACE (c)) | |
| 620 { | |
| 621 /* Make sure we output at least one space, or | |
| 622 the demangled symbol name will run into | |
| 623 whatever text follows. */ | |
| 624 putc (' ', to); | |
| 625 } | |
| 626 } | |
| 627 | |
| 628 free (result); | |
| 629 } | |
| 630 else | |
| 631 fputs (word, to); | |
| 632 | |
| 633 fflush (to); | |
| 634 obstack_free (&temporary_obstack, temporary_firstobj); | |
| 635 } | |
| 636 if (c == EOF) | |
| 637 break; | |
| 638 putc (c, to); | |
| 639 } | |
| 640 fclose (stream); | |
| 641 } | |
| 642 | |
| 643 /* Return the kind of symbol denoted by name S. */ | |
| 644 | |
| 645 static symkind | |
| 646 is_ctor_dtor (const char *s) | |
| 647 { | |
|
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648 struct names { const char *const name; const int len; symkind ret; |
| 0 | 649 const int two_underscores; }; |
| 650 | |
| 651 const struct names *p; | |
| 652 int ch; | |
| 653 const char *orig_s = s; | |
| 654 | |
| 655 static const struct names special[] = { | |
| 656 #ifndef NO_DOLLAR_IN_LABEL | |
| 657 { "GLOBAL__I$", sizeof ("GLOBAL__I$")-1, SYM_CTOR, 0 }, | |
| 658 { "GLOBAL__D$", sizeof ("GLOBAL__D$")-1, SYM_DTOR, 0 }, | |
| 659 #else | |
| 660 #ifndef NO_DOT_IN_LABEL | |
| 661 { "GLOBAL__I.", sizeof ("GLOBAL__I.")-1, SYM_CTOR, 0 }, | |
| 662 { "GLOBAL__D.", sizeof ("GLOBAL__D.")-1, SYM_DTOR, 0 }, | |
| 663 #endif /* NO_DOT_IN_LABEL */ | |
| 664 #endif /* NO_DOLLAR_IN_LABEL */ | |
| 665 { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, SYM_CTOR, 0 }, | |
| 666 { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, SYM_DTOR, 0 }, | |
| 667 { "GLOBAL__F_", sizeof ("GLOBAL__F_")-1, SYM_DWEH, 0 }, | |
| 668 { "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, SYM_INIT, 0 }, | |
| 669 { "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, SYM_FINI, 0 }, | |
| 670 { NULL, 0, SYM_REGULAR, 0 } | |
| 671 }; | |
| 672 | |
| 673 while ((ch = *s) == '_') | |
| 674 ++s; | |
| 675 | |
| 676 if (s == orig_s) | |
| 677 return SYM_REGULAR; | |
| 678 | |
| 679 for (p = &special[0]; p->len > 0; p++) | |
| 680 { | |
| 681 if (ch == p->name[0] | |
| 682 && (!p->two_underscores || ((s - orig_s) >= 2)) | |
| 683 && strncmp(s, p->name, p->len) == 0) | |
| 684 { | |
| 685 return p->ret; | |
| 686 } | |
| 687 } | |
| 688 return SYM_REGULAR; | |
| 689 } | |
| 690 | |
| 691 /* We maintain two prefix lists: one from COMPILER_PATH environment variable | |
| 692 and one from the PATH variable. */ | |
| 693 | |
| 694 static struct path_prefix cpath, path; | |
| 695 | |
| 696 #ifdef CROSS_DIRECTORY_STRUCTURE | |
| 697 /* This is the name of the target machine. We use it to form the name | |
| 698 of the files to execute. */ | |
| 699 | |
| 700 static const char *const target_machine = TARGET_MACHINE; | |
| 701 #endif | |
| 702 | |
| 703 /* Search for NAME using prefix list PPREFIX. We only look for executable | |
| 704 files. | |
| 705 | |
| 706 Return 0 if not found, otherwise return its name, allocated with malloc. */ | |
| 707 | |
| 708 static char * | |
| 709 find_a_file (struct path_prefix *pprefix, const char *name) | |
| 710 { | |
| 711 char *temp; | |
| 712 struct prefix_list *pl; | |
| 713 int len = pprefix->max_len + strlen (name) + 1; | |
| 714 | |
| 715 if (debug) | |
| 716 fprintf (stderr, "Looking for '%s'\n", name); | |
| 717 | |
| 718 #ifdef HOST_EXECUTABLE_SUFFIX | |
| 719 len += strlen (HOST_EXECUTABLE_SUFFIX); | |
| 720 #endif | |
| 721 | |
| 722 temp = XNEWVEC (char, len); | |
| 723 | |
| 724 /* Determine the filename to execute (special case for absolute paths). */ | |
| 725 | |
| 726 if (IS_ABSOLUTE_PATH (name)) | |
| 727 { | |
| 728 if (access (name, X_OK) == 0) | |
| 729 { | |
| 730 strcpy (temp, name); | |
| 731 | |
| 732 if (debug) | |
| 733 fprintf (stderr, " - found: absolute path\n"); | |
| 734 | |
| 735 return temp; | |
| 736 } | |
| 737 | |
| 738 #ifdef HOST_EXECUTABLE_SUFFIX | |
| 739 /* Some systems have a suffix for executable files. | |
| 740 So try appending that. */ | |
| 741 strcpy (temp, name); | |
| 742 strcat (temp, HOST_EXECUTABLE_SUFFIX); | |
| 743 | |
| 744 if (access (temp, X_OK) == 0) | |
| 745 return temp; | |
| 746 #endif | |
| 747 | |
| 748 if (debug) | |
| 749 fprintf (stderr, " - failed to locate using absolute path\n"); | |
| 750 } | |
| 751 else | |
| 752 for (pl = pprefix->plist; pl; pl = pl->next) | |
| 753 { | |
| 754 struct stat st; | |
| 755 | |
| 756 strcpy (temp, pl->prefix); | |
| 757 strcat (temp, name); | |
| 758 | |
| 759 if (stat (temp, &st) >= 0 | |
| 760 && ! S_ISDIR (st.st_mode) | |
| 761 && access (temp, X_OK) == 0) | |
| 762 return temp; | |
| 763 | |
| 764 #ifdef HOST_EXECUTABLE_SUFFIX | |
| 765 /* Some systems have a suffix for executable files. | |
| 766 So try appending that. */ | |
| 767 strcat (temp, HOST_EXECUTABLE_SUFFIX); | |
| 768 | |
| 769 if (stat (temp, &st) >= 0 | |
| 770 && ! S_ISDIR (st.st_mode) | |
| 771 && access (temp, X_OK) == 0) | |
| 772 return temp; | |
| 773 #endif | |
| 774 } | |
| 775 | |
| 776 if (debug && pprefix->plist == NULL) | |
| 777 fprintf (stderr, " - failed: no entries in prefix list\n"); | |
| 778 | |
| 779 free (temp); | |
| 780 return 0; | |
| 781 } | |
| 782 | |
| 783 /* Add an entry for PREFIX to prefix list PPREFIX. */ | |
| 784 | |
| 785 static void | |
| 786 add_prefix (struct path_prefix *pprefix, const char *prefix) | |
| 787 { | |
| 788 struct prefix_list *pl, **prev; | |
| 789 int len; | |
| 790 | |
| 791 if (pprefix->plist) | |
| 792 { | |
| 793 for (pl = pprefix->plist; pl->next; pl = pl->next) | |
| 794 ; | |
| 795 prev = &pl->next; | |
| 796 } | |
| 797 else | |
| 798 prev = &pprefix->plist; | |
| 799 | |
| 800 /* Keep track of the longest prefix. */ | |
| 801 | |
| 802 len = strlen (prefix); | |
| 803 if (len > pprefix->max_len) | |
| 804 pprefix->max_len = len; | |
| 805 | |
| 806 pl = XNEW (struct prefix_list); | |
| 807 pl->prefix = xstrdup (prefix); | |
| 808 | |
| 809 if (*prev) | |
| 810 pl->next = *prev; | |
| 811 else | |
| 812 pl->next = (struct prefix_list *) 0; | |
| 813 *prev = pl; | |
| 814 } | |
| 815 | |
| 816 /* Take the value of the environment variable ENV, break it into a path, and | |
| 817 add of the entries to PPREFIX. */ | |
| 818 | |
| 819 static void | |
| 820 prefix_from_env (const char *env, struct path_prefix *pprefix) | |
| 821 { | |
| 822 const char *p; | |
|
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823 p = getenv (env); |
| 0 | 824 |
| 825 if (p) | |
| 826 prefix_from_string (p, pprefix); | |
| 827 } | |
| 828 | |
| 829 static void | |
| 830 prefix_from_string (const char *p, struct path_prefix *pprefix) | |
| 831 { | |
| 832 const char *startp, *endp; | |
| 833 char *nstore = XNEWVEC (char, strlen (p) + 3); | |
| 834 | |
| 835 if (debug) | |
| 836 fprintf (stderr, "Convert string '%s' into prefixes, separator = '%c'\n", p, PATH_SEPARATOR); | |
| 837 | |
| 838 startp = endp = p; | |
| 839 while (1) | |
| 840 { | |
| 841 if (*endp == PATH_SEPARATOR || *endp == 0) | |
| 842 { | |
| 843 strncpy (nstore, startp, endp-startp); | |
| 844 if (endp == startp) | |
| 845 { | |
| 846 strcpy (nstore, "./"); | |
| 847 } | |
| 848 else if (! IS_DIR_SEPARATOR (endp[-1])) | |
| 849 { | |
| 850 nstore[endp-startp] = DIR_SEPARATOR; | |
| 851 nstore[endp-startp+1] = 0; | |
| 852 } | |
| 853 else | |
| 854 nstore[endp-startp] = 0; | |
| 855 | |
| 856 if (debug) | |
| 857 fprintf (stderr, " - add prefix: %s\n", nstore); | |
| 858 | |
| 859 add_prefix (pprefix, nstore); | |
| 860 if (*endp == 0) | |
| 861 break; | |
| 862 endp = startp = endp + 1; | |
| 863 } | |
| 864 else | |
| 865 endp++; | |
| 866 } | |
| 867 free (nstore); | |
| 868 } | |
|
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869 |
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870 #ifdef OBJECT_FORMAT_NONE |
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871 |
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872 /* Add an entry for the object file NAME to object file list LIST. |
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873 New entries are added at the end of the list. The original pointer |
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874 value of NAME is preserved, i.e., no string copy is performed. */ |
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875 |
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876 static void |
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877 add_lto_object (struct lto_object_list *list, const char *name) |
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878 { |
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879 struct lto_object *n = XNEW (struct lto_object); |
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880 n->name = name; |
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881 n->next = NULL; |
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882 |
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883 if (list->last) |
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884 list->last->next = n; |
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885 else |
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886 list->first = n; |
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|
887 |
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888 list->last = n; |
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889 } |
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890 #endif /* OBJECT_FORMAT_NONE */ |
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891 |
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892 |
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893 /* Perform a link-time recompilation and relink if any of the object |
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894 files contain LTO info. The linker command line LTO_LD_ARGV |
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895 represents the linker command that would produce a final executable |
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896 without the use of LTO. OBJECT_LST is a vector of object file names |
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897 appearing in LTO_LD_ARGV that are to be considerd for link-time |
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898 recompilation, where OBJECT is a pointer to the last valid element. |
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899 (This awkward convention avoids an impedance mismatch with the |
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900 usage of similarly-named variables in main().) The elements of |
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901 OBJECT_LST must be identical, i.e., pointer equal, to the |
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902 corresponding arguments in LTO_LD_ARGV. |
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903 |
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904 Upon entry, at least one linker run has been performed without the |
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905 use of any LTO info that might be present. Any recompilations |
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906 necessary for template instantiations have been performed, and |
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907 initializer/finalizer tables have been created if needed and |
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908 included in the linker command line LTO_LD_ARGV. If any of the |
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909 object files contain LTO info, we run the LTO back end on all such |
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910 files, and perform the final link with the LTO back end output |
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911 substituted for the LTO-optimized files. In some cases, a final |
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912 link with all link-time generated code has already been performed, |
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913 so there is no need to relink if no LTO info is found. In other |
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914 cases, our caller has not produced the final executable, and is |
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915 relying on us to perform the required link whether LTO info is |
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916 present or not. In that case, the FORCE argument should be true. |
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917 Note that the linker command line argument LTO_LD_ARGV passed into |
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918 this function may be modified in place. */ |
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919 |
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920 static void |
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921 maybe_run_lto_and_relink (char **lto_ld_argv, char **object_lst, |
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diff
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|
922 const char **object, bool force) |
|
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diff
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|
923 { |
|
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diff
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|
924 const char **object_file = CONST_CAST2 (const char **, char **, object_lst); |
|
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|
925 |
|
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diff
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|
926 int num_lto_c_args = 1; /* Allow space for the terminating NULL. */ |
|
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|
927 |
|
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diff
changeset
|
928 while (object_file < object) |
|
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diff
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|
929 { |
|
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|
930 /* If file contains LTO info, add it to the list of LTO objects. */ |
|
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diff
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|
931 scan_prog_file (*object_file++, PASS_LTOINFO, SCAN_ALL); |
|
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diff
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|
932 |
|
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diff
changeset
|
933 /* Increment the argument count by the number of object file arguments |
|
77e2b8dfacca
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diff
changeset
|
934 we will add. An upper bound suffices, so just count all of the |
|
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diff
changeset
|
935 object files regardless of whether they contain LTO info. */ |
|
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diff
changeset
|
936 num_lto_c_args++; |
|
77e2b8dfacca
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diff
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|
937 } |
|
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|
938 |
|
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diff
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|
939 if (lto_objects.first) |
|
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|
940 { |
|
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|
941 char **lto_c_argv; |
|
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diff
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|
942 const char **lto_c_ptr; |
|
67
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|
943 char **p; |
|
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|
944 char **lto_o_ptr; |
|
55
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|
945 struct lto_object *list; |
|
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update it from 4.4.3 to 4.5.0
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diff
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|
946 char *lto_wrapper = getenv ("COLLECT_LTO_WRAPPER"); |
|
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|
947 struct pex_obj *pex; |
|
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|
948 const char *prog = "lto-wrapper"; |
|
67
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|
949 int lto_ld_argv_size = 0; |
|
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|
950 char **out_lto_ld_argv; |
|
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|
951 int out_lto_ld_argv_size; |
|
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|
952 size_t num_files; |
|
55
77e2b8dfacca
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|
953 |
|
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diff
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|
954 if (!lto_wrapper) |
|
67
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diff
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|
955 fatal ("COLLECT_LTO_WRAPPER must be set"); |
|
55
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diff
changeset
|
956 |
|
63
b7f97abdc517
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55
diff
changeset
|
957 num_lto_c_args++; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
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|
958 |
|
55
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|
959 /* There is at least one object file containing LTO info, |
|
67
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diff
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|
960 so we need to run the LTO back end and relink. |
|
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|
961 |
|
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|
962 To do so we build updated ld arguments with first |
|
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|
963 LTO object replaced by all partitions and other LTO |
|
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|
964 objects removed. */ |
|
55
77e2b8dfacca
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diff
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|
965 |
|
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diff
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|
966 lto_c_argv = (char **) xcalloc (sizeof (char *), num_lto_c_args); |
|
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|
967 lto_c_ptr = CONST_CAST2 (const char **, char **, lto_c_argv); |
|
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diff
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|
968 |
|
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|
969 *lto_c_ptr++ = lto_wrapper; |
|
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|
970 |
|
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diff
changeset
|
971 /* Add LTO objects to the wrapper command line. */ |
|
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diff
changeset
|
972 for (list = lto_objects.first; list; list = list->next) |
|
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changeset
|
973 *lto_c_ptr++ = list->name; |
|
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changeset
|
974 |
|
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|
975 *lto_c_ptr = NULL; |
|
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diff
changeset
|
976 |
|
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changeset
|
977 /* Run the LTO back end. */ |
|
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changeset
|
978 pex = collect_execute (prog, lto_c_argv, NULL, NULL, PEX_SEARCH); |
|
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changeset
|
979 { |
|
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changeset
|
980 int c; |
|
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changeset
|
981 FILE *stream; |
|
67
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|
982 size_t i; |
|
55
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changeset
|
983 char *start, *end; |
|
77e2b8dfacca
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changeset
|
984 |
|
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changeset
|
985 stream = pex_read_output (pex, 0); |
|
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changeset
|
986 gcc_assert (stream); |
|
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|
987 |
|
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changeset
|
988 num_files = 0; |
|
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changeset
|
989 while ((c = getc (stream)) != EOF) |
|
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|
990 { |
|
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changeset
|
991 obstack_1grow (&temporary_obstack, c); |
|
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changeset
|
992 if (c == '\n') |
|
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changeset
|
993 ++num_files; |
|
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changeset
|
994 } |
|
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changeset
|
995 |
|
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changeset
|
996 lto_o_files = XNEWVEC (char *, num_files + 1); |
|
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changeset
|
997 lto_o_files[num_files] = NULL; |
|
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changeset
|
998 start = XOBFINISH (&temporary_obstack, char *); |
|
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changeset
|
999 for (i = 0; i < num_files; ++i) |
|
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|
1000 { |
|
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changeset
|
1001 end = start; |
|
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changeset
|
1002 while (*end != '\n') |
|
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changeset
|
1003 ++end; |
|
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changeset
|
1004 *end = '\0'; |
|
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changeset
|
1005 |
|
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|
1006 lto_o_files[i] = xstrdup (start); |
|
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|
1007 |
|
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changeset
|
1008 start = end + 1; |
|
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|
1009 } |
|
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|
1010 |
|
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changeset
|
1011 obstack_free (&temporary_obstack, temporary_firstobj); |
|
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|
1012 } |
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changeset
|
1013 do_wait (prog, pex); |
|
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1014 pex = NULL; |
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|
1015 |
|
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|
1016 /* Compute memory needed for new LD arguments. At most number of original arguemtns |
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1017 plus number of partitions. */ |
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|
1018 for (lto_ld_argv_size = 0; lto_ld_argv[lto_ld_argv_size]; lto_ld_argv_size++) |
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|
1019 ; |
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1020 out_lto_ld_argv = XCNEWVEC(char *, num_files + lto_ld_argv_size + 1); |
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1021 out_lto_ld_argv_size = 0; |
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1022 |
|
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1023 /* After running the LTO back end, we will relink, substituting |
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1024 the LTO output for the object files that we submitted to the |
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1025 LTO. Here, we modify the linker command line for the relink. */ |
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1026 |
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1027 /* Copy all arguments until we find first LTO file. */ |
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1028 p = lto_ld_argv; |
|
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1029 while (*p != NULL) |
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1030 { |
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1031 for (list = lto_objects.first; list; list = list->next) |
|
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1032 if (*p == list->name) /* Note test for pointer equality! */ |
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1033 break; |
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1034 if (list) |
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1035 break; |
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1036 out_lto_ld_argv[out_lto_ld_argv_size++] = *p++; |
|
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1037 } |
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1038 |
|
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1039 /* Now insert all LTO partitions. */ |
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1040 lto_o_ptr = lto_o_files; |
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1041 while (*lto_o_ptr) |
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1042 out_lto_ld_argv[out_lto_ld_argv_size++] = *lto_o_ptr++; |
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1043 |
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1044 /* ... and copy the rest. */ |
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1045 while (*p != NULL) |
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1046 { |
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1047 for (list = lto_objects.first; list; list = list->next) |
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1048 if (*p == list->name) /* Note test for pointer equality! */ |
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1049 break; |
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1050 if (!list) |
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1051 out_lto_ld_argv[out_lto_ld_argv_size++] = *p; |
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1052 p++; |
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1053 } |
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1054 out_lto_ld_argv[out_lto_ld_argv_size++] = 0; |
|
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1055 |
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1056 /* Run the linker again, this time replacing the object files |
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1057 optimized by the LTO with the temporary file generated by the LTO. */ |
|
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1058 fork_execute ("ld", out_lto_ld_argv); |
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1059 post_ld_pass (true); |
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1060 free (lto_ld_argv); |
|
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1061 |
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1062 maybe_unlink_list (lto_o_files); |
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1063 } |
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1064 else if (force) |
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1065 { |
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1066 /* Our caller is relying on us to do the link |
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1067 even though there is no LTO back end work to be done. */ |
|
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1068 fork_execute ("ld", lto_ld_argv); |
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1069 post_ld_pass (false); |
|
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1070 } |
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1071 } |
| 0 | 1072 |
| 1073 /* Main program. */ | |
| 1074 | |
| 1075 int | |
| 1076 main (int argc, char **argv) | |
| 1077 { | |
| 1078 static const char *const ld_suffix = "ld"; | |
|
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1079 static const char *const plugin_ld_suffix = PLUGIN_LD; |
| 0 | 1080 static const char *const real_ld_suffix = "real-ld"; |
| 1081 static const char *const collect_ld_suffix = "collect-ld"; | |
| 1082 static const char *const nm_suffix = "nm"; | |
| 1083 static const char *const gnm_suffix = "gnm"; | |
| 1084 #ifdef LDD_SUFFIX | |
| 1085 static const char *const ldd_suffix = LDD_SUFFIX; | |
| 1086 #endif | |
| 1087 static const char *const strip_suffix = "strip"; | |
| 1088 static const char *const gstrip_suffix = "gstrip"; | |
| 1089 | |
| 1090 #ifdef CROSS_DIRECTORY_STRUCTURE | |
| 1091 /* If we look for a program in the compiler directories, we just use | |
| 1092 the short name, since these directories are already system-specific. | |
| 1093 But it we look for a program in the system directories, we need to | |
| 1094 qualify the program name with the target machine. */ | |
| 1095 | |
| 1096 const char *const full_ld_suffix = | |
| 1097 concat(target_machine, "-", ld_suffix, NULL); | |
|
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1098 const char *const full_plugin_ld_suffix = |
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1099 concat(target_machine, "-", plugin_ld_suffix, NULL); |
| 0 | 1100 const char *const full_nm_suffix = |
| 1101 concat (target_machine, "-", nm_suffix, NULL); | |
| 1102 const char *const full_gnm_suffix = | |
| 1103 concat (target_machine, "-", gnm_suffix, NULL); | |
| 1104 #ifdef LDD_SUFFIX | |
| 1105 const char *const full_ldd_suffix = | |
| 1106 concat (target_machine, "-", ldd_suffix, NULL); | |
| 1107 #endif | |
| 1108 const char *const full_strip_suffix = | |
| 1109 concat (target_machine, "-", strip_suffix, NULL); | |
| 1110 const char *const full_gstrip_suffix = | |
| 1111 concat (target_machine, "-", gstrip_suffix, NULL); | |
| 1112 #else | |
| 1113 const char *const full_ld_suffix = ld_suffix; | |
|
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1114 const char *const full_plugin_ld_suffix = plugin_ld_suffix; |
| 0 | 1115 const char *const full_nm_suffix = nm_suffix; |
| 1116 const char *const full_gnm_suffix = gnm_suffix; | |
| 1117 #ifdef LDD_SUFFIX | |
| 1118 const char *const full_ldd_suffix = ldd_suffix; | |
| 1119 #endif | |
| 1120 const char *const full_strip_suffix = strip_suffix; | |
| 1121 const char *const full_gstrip_suffix = gstrip_suffix; | |
| 1122 #endif /* CROSS_DIRECTORY_STRUCTURE */ | |
| 1123 | |
| 1124 const char *arg; | |
| 1125 FILE *outf; | |
| 1126 #ifdef COLLECT_EXPORT_LIST | |
| 1127 FILE *exportf; | |
| 1128 #endif | |
| 1129 const char *ld_file_name; | |
| 1130 const char *p; | |
| 1131 char **c_argv; | |
| 1132 const char **c_ptr; | |
| 1133 char **ld1_argv; | |
| 1134 const char **ld1; | |
|
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1135 bool use_plugin = false; |
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1136 |
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1137 /* The kinds of symbols we will have to consider when scanning the |
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1138 outcome of a first pass link. This is ALL to start with, then might |
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1139 be adjusted before getting to the first pass link per se, typically on |
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1140 AIX where we perform an early scan of objects and libraries to fetch |
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1141 the list of global ctors/dtors and make sure they are not garbage |
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1142 collected. */ |
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1143 scanfilter ld1_filter = SCAN_ALL; |
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1144 |
| 0 | 1145 char **ld2_argv; |
| 1146 const char **ld2; | |
| 1147 char **object_lst; | |
| 1148 const char **object; | |
| 1149 int first_file; | |
| 1150 int num_c_args; | |
| 1151 char **old_argv; | |
| 1152 | |
| 1153 old_argv = argv; | |
| 1154 expandargv (&argc, &argv); | |
| 1155 if (argv != old_argv) | |
| 1156 at_file_supplied = 1; | |
| 1157 | |
|
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1158 process_args (&argc, argv); |
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1159 |
| 0 | 1160 num_c_args = argc + 9; |
| 1161 | |
| 1162 no_demangle = !! getenv ("COLLECT_NO_DEMANGLE"); | |
| 1163 | |
| 1164 /* Suppress demangling by the real linker, which may be broken. */ | |
| 1165 putenv (xstrdup ("COLLECT_NO_DEMANGLE=")); | |
| 1166 | |
| 1167 #if defined (COLLECT2_HOST_INITIALIZATION) | |
| 1168 /* Perform system dependent initialization, if necessary. */ | |
| 1169 COLLECT2_HOST_INITIALIZATION; | |
| 1170 #endif | |
| 1171 | |
| 1172 #ifdef SIGCHLD | |
| 1173 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will | |
| 1174 receive the signal. A different setting is inheritable */ | |
| 1175 signal (SIGCHLD, SIG_DFL); | |
| 1176 #endif | |
| 1177 | |
| 1178 /* Unlock the stdio streams. */ | |
| 1179 unlock_std_streams (); | |
| 1180 | |
| 1181 gcc_init_libintl (); | |
| 1182 | |
| 1183 /* Do not invoke xcalloc before this point, since locale needs to be | |
| 1184 set first, in case a diagnostic is issued. */ | |
| 1185 | |
|
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1186 ld1_argv = XCNEWVEC (char *, argc + 4); |
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1187 ld1 = CONST_CAST2 (const char **, char **, ld1_argv); |
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1188 ld2_argv = XCNEWVEC (char *, argc + 11); |
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1189 ld2 = CONST_CAST2 (const char **, char **, ld2_argv); |
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1190 object_lst = XCNEWVEC (char *, argc); |
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1191 object = CONST_CAST2 (const char **, char **, object_lst); |
| 0 | 1192 |
| 1193 #ifdef DEBUG | |
| 1194 debug = 1; | |
| 1195 #endif | |
| 1196 | |
| 1197 /* Parse command line early for instances of -debug. This allows | |
| 1198 the debug flag to be set before functions like find_a_file() | |
|
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1199 are called. We also look for the -flto or -flto-partition=none flag to know |
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1200 what LTO mode we are in. */ |
| 0 | 1201 { |
| 1202 int i; | |
|
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1203 bool no_partition = false; |
| 0 | 1204 |
| 1205 for (i = 1; argv[i] != NULL; i ++) | |
| 1206 { | |
| 1207 if (! strcmp (argv[i], "-debug")) | |
|
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1208 debug = true; |
|
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1209 else if (! strcmp (argv[i], "-flto-partition=none")) |
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1210 no_partition = true; |
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1211 else if ((! strncmp (argv[i], "-flto=", 6) |
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1212 || ! strcmp (argv[i], "-flto")) && ! use_plugin) |
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1213 lto_mode = LTO_MODE_WHOPR; |
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1214 else if (!strncmp (argv[i], "-fno-lto", 8)) |
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1215 lto_mode = LTO_MODE_NONE; |
|
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1216 else if (! strcmp (argv[i], "-plugin")) |
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1217 { |
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1218 use_plugin = true; |
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1219 lto_mode = LTO_MODE_NONE; |
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1220 } |
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1221 #ifdef COLLECT_EXPORT_LIST |
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1222 /* since -brtl, -bexport, -b64 are not position dependent |
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1223 also check for them here */ |
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1224 if ((argv[i][0] == '-') && (argv[i][1] == 'b')) |
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1225 { |
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1226 arg = argv[i]; |
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1227 /* We want to disable automatic exports on AIX when user |
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1228 explicitly puts an export list in command line */ |
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1229 if (arg[2] == 'E' || strncmp (&arg[2], "export", 6) == 0) |
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1230 export_flag = 1; |
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1231 else if (arg[2] == '6' && arg[3] == '4') |
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1232 aix64_flag = 1; |
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1233 else if (arg[2] == 'r' && arg[3] == 't' && arg[4] == 'l') |
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1234 aixrtl_flag = 1; |
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1235 } |
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1236 #endif |
| 0 | 1237 } |
| 1238 vflag = debug; | |
|
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1239 if (no_partition && lto_mode == LTO_MODE_WHOPR) |
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1240 lto_mode = LTO_MODE_LTO; |
| 0 | 1241 } |
| 1242 | |
| 1243 #ifndef DEFAULT_A_OUT_NAME | |
| 1244 output_file = "a.out"; | |
| 1245 #else | |
| 1246 output_file = DEFAULT_A_OUT_NAME; | |
| 1247 #endif | |
| 1248 | |
| 1249 obstack_begin (&temporary_obstack, 0); | |
| 1250 temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0); | |
| 1251 | |
| 1252 #ifndef HAVE_LD_DEMANGLE | |
| 1253 current_demangling_style = auto_demangling; | |
| 1254 #endif | |
| 1255 p = getenv ("COLLECT_GCC_OPTIONS"); | |
| 1256 while (p && *p) | |
| 1257 { | |
| 1258 const char *q = extract_string (&p); | |
| 1259 if (*q == '-' && (q[1] == 'm' || q[1] == 'f')) | |
| 1260 num_c_args++; | |
| 1261 } | |
| 1262 obstack_free (&temporary_obstack, temporary_firstobj); | |
| 1263 | |
| 1264 /* -fno-profile-arcs -fno-test-coverage -fno-branch-probabilities | |
|
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1265 -fno-exceptions -w -fno-whole-program */ |
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1266 num_c_args += 6; |
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1267 |
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1268 c_argv = XCNEWVEC (char *, num_c_args); |
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1269 c_ptr = CONST_CAST2 (const char **, char **, c_argv); |
| 0 | 1270 |
| 1271 if (argc < 2) | |
| 1272 fatal ("no arguments"); | |
| 1273 | |
| 1274 #ifdef SIGQUIT | |
| 1275 if (signal (SIGQUIT, SIG_IGN) != SIG_IGN) | |
| 1276 signal (SIGQUIT, handler); | |
| 1277 #endif | |
| 1278 if (signal (SIGINT, SIG_IGN) != SIG_IGN) | |
| 1279 signal (SIGINT, handler); | |
| 1280 #ifdef SIGALRM | |
| 1281 if (signal (SIGALRM, SIG_IGN) != SIG_IGN) | |
| 1282 signal (SIGALRM, handler); | |
| 1283 #endif | |
| 1284 #ifdef SIGHUP | |
| 1285 if (signal (SIGHUP, SIG_IGN) != SIG_IGN) | |
| 1286 signal (SIGHUP, handler); | |
| 1287 #endif | |
| 1288 if (signal (SIGSEGV, SIG_IGN) != SIG_IGN) | |
| 1289 signal (SIGSEGV, handler); | |
| 1290 #ifdef SIGBUS | |
| 1291 if (signal (SIGBUS, SIG_IGN) != SIG_IGN) | |
| 1292 signal (SIGBUS, handler); | |
| 1293 #endif | |
| 1294 | |
| 1295 /* Extract COMPILER_PATH and PATH into our prefix list. */ | |
| 1296 prefix_from_env ("COMPILER_PATH", &cpath); | |
| 1297 prefix_from_env ("PATH", &path); | |
| 1298 | |
| 1299 /* Try to discover a valid linker/nm/strip to use. */ | |
| 1300 | |
| 1301 /* Maybe we know the right file to use (if not cross). */ | |
| 1302 ld_file_name = 0; | |
| 1303 #ifdef DEFAULT_LINKER | |
| 1304 if (access (DEFAULT_LINKER, X_OK) == 0) | |
| 1305 ld_file_name = DEFAULT_LINKER; | |
| 1306 if (ld_file_name == 0) | |
| 1307 #endif | |
| 1308 #ifdef REAL_LD_FILE_NAME | |
| 1309 ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME); | |
| 1310 if (ld_file_name == 0) | |
| 1311 #endif | |
| 1312 /* Search the (target-specific) compiler dirs for ld'. */ | |
| 1313 ld_file_name = find_a_file (&cpath, real_ld_suffix); | |
| 1314 /* Likewise for `collect-ld'. */ | |
| 1315 if (ld_file_name == 0) | |
| 1316 ld_file_name = find_a_file (&cpath, collect_ld_suffix); | |
| 1317 /* Search the compiler directories for `ld'. We have protection against | |
| 1318 recursive calls in find_a_file. */ | |
| 1319 if (ld_file_name == 0) | |
|
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1320 ld_file_name = find_a_file (&cpath, |
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1321 use_plugin |
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1322 ? plugin_ld_suffix |
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1323 : ld_suffix); |
| 0 | 1324 /* Search the ordinary system bin directories |
| 1325 for `ld' (if native linking) or `TARGET-ld' (if cross). */ | |
| 1326 if (ld_file_name == 0) | |
|
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1327 ld_file_name = find_a_file (&path, |
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1328 use_plugin |
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1329 ? full_plugin_ld_suffix |
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1330 : full_ld_suffix); |
| 0 | 1331 |
| 1332 #ifdef REAL_NM_FILE_NAME | |
| 1333 nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME); | |
| 1334 if (nm_file_name == 0) | |
| 1335 #endif | |
| 1336 nm_file_name = find_a_file (&cpath, gnm_suffix); | |
| 1337 if (nm_file_name == 0) | |
| 1338 nm_file_name = find_a_file (&path, full_gnm_suffix); | |
| 1339 if (nm_file_name == 0) | |
| 1340 nm_file_name = find_a_file (&cpath, nm_suffix); | |
| 1341 if (nm_file_name == 0) | |
| 1342 nm_file_name = find_a_file (&path, full_nm_suffix); | |
| 1343 | |
| 1344 #ifdef LDD_SUFFIX | |
| 1345 ldd_file_name = find_a_file (&cpath, ldd_suffix); | |
| 1346 if (ldd_file_name == 0) | |
| 1347 ldd_file_name = find_a_file (&path, full_ldd_suffix); | |
| 1348 #endif | |
| 1349 | |
| 1350 #ifdef REAL_STRIP_FILE_NAME | |
| 1351 strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME); | |
| 1352 if (strip_file_name == 0) | |
| 1353 #endif | |
| 1354 strip_file_name = find_a_file (&cpath, gstrip_suffix); | |
| 1355 if (strip_file_name == 0) | |
| 1356 strip_file_name = find_a_file (&path, full_gstrip_suffix); | |
| 1357 if (strip_file_name == 0) | |
| 1358 strip_file_name = find_a_file (&cpath, strip_suffix); | |
| 1359 if (strip_file_name == 0) | |
| 1360 strip_file_name = find_a_file (&path, full_strip_suffix); | |
| 1361 | |
| 1362 /* Determine the full path name of the C compiler to use. */ | |
| 1363 c_file_name = getenv ("COLLECT_GCC"); | |
| 1364 if (c_file_name == 0) | |
| 1365 { | |
| 1366 #ifdef CROSS_DIRECTORY_STRUCTURE | |
| 1367 c_file_name = concat (target_machine, "-gcc", NULL); | |
| 1368 #else | |
| 1369 c_file_name = "gcc"; | |
| 1370 #endif | |
| 1371 } | |
| 1372 | |
| 1373 p = find_a_file (&cpath, c_file_name); | |
| 1374 | |
| 1375 /* Here it should be safe to use the system search path since we should have | |
| 1376 already qualified the name of the compiler when it is needed. */ | |
| 1377 if (p == 0) | |
| 1378 p = find_a_file (&path, c_file_name); | |
| 1379 | |
| 1380 if (p) | |
| 1381 c_file_name = p; | |
| 1382 | |
| 1383 *ld1++ = *ld2++ = ld_file_name; | |
| 1384 | |
| 1385 /* Make temp file names. */ | |
| 1386 c_file = make_temp_file (".c"); | |
| 1387 o_file = make_temp_file (".o"); | |
| 1388 #ifdef COLLECT_EXPORT_LIST | |
| 1389 export_file = make_temp_file (".x"); | |
| 1390 #endif | |
| 1391 ldout = make_temp_file (".ld"); | |
| 1392 lderrout = make_temp_file (".le"); | |
| 1393 *c_ptr++ = c_file_name; | |
| 1394 *c_ptr++ = "-x"; | |
| 1395 *c_ptr++ = "c"; | |
| 1396 *c_ptr++ = "-c"; | |
| 1397 *c_ptr++ = "-o"; | |
| 1398 *c_ptr++ = o_file; | |
| 1399 | |
| 1400 #ifdef COLLECT_EXPORT_LIST | |
| 1401 /* Generate a list of directories from LIBPATH. */ | |
| 1402 prefix_from_env ("LIBPATH", &libpath_lib_dirs); | |
| 1403 /* Add to this list also two standard directories where | |
| 1404 AIX loader always searches for libraries. */ | |
| 1405 add_prefix (&libpath_lib_dirs, "/lib"); | |
| 1406 add_prefix (&libpath_lib_dirs, "/usr/lib"); | |
| 1407 #endif | |
| 1408 | |
| 1409 /* Get any options that the upper GCC wants to pass to the sub-GCC. | |
| 1410 | |
| 1411 AIX support needs to know if -shared has been specified before | |
| 1412 parsing commandline arguments. */ | |
| 1413 | |
| 1414 p = getenv ("COLLECT_GCC_OPTIONS"); | |
| 1415 while (p && *p) | |
| 1416 { | |
| 1417 const char *q = extract_string (&p); | |
| 1418 if (*q == '-' && (q[1] == 'm' || q[1] == 'f')) | |
| 1419 *c_ptr++ = xstrdup (q); | |
| 1420 if (strcmp (q, "-EL") == 0 || strcmp (q, "-EB") == 0) | |
| 1421 *c_ptr++ = xstrdup (q); | |
| 1422 if (strcmp (q, "-shared") == 0) | |
| 1423 shared_obj = 1; | |
| 1424 if (*q == '-' && q[1] == 'B') | |
| 1425 { | |
| 1426 *c_ptr++ = xstrdup (q); | |
| 1427 if (q[2] == 0) | |
| 1428 { | |
| 1429 q = extract_string (&p); | |
| 1430 *c_ptr++ = xstrdup (q); | |
| 1431 } | |
| 1432 } | |
| 1433 } | |
| 1434 obstack_free (&temporary_obstack, temporary_firstobj); | |
| 1435 *c_ptr++ = "-fno-profile-arcs"; | |
| 1436 *c_ptr++ = "-fno-test-coverage"; | |
| 1437 *c_ptr++ = "-fno-branch-probabilities"; | |
| 1438 *c_ptr++ = "-fno-exceptions"; | |
| 1439 *c_ptr++ = "-w"; | |
|
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1440 *c_ptr++ = "-fno-whole-program"; |
| 0 | 1441 |
| 1442 /* !!! When GCC calls collect2, | |
| 1443 it does not know whether it is calling collect2 or ld. | |
| 1444 So collect2 cannot meaningfully understand any options | |
| 1445 except those ld understands. | |
| 1446 If you propose to make GCC pass some other option, | |
| 1447 just imagine what will happen if ld is really ld!!! */ | |
| 1448 | |
| 1449 /* Parse arguments. Remember output file spec, pass the rest to ld. */ | |
| 1450 /* After the first file, put in the c++ rt0. */ | |
| 1451 | |
| 1452 first_file = 1; | |
| 1453 #ifdef HAVE_LD_DEMANGLE | |
| 1454 if (!demangle_flag && !no_demangle) | |
| 1455 demangle_flag = "--demangle"; | |
| 1456 if (demangle_flag) | |
| 1457 *ld1++ = *ld2++ = demangle_flag; | |
| 1458 #endif | |
| 1459 while ((arg = *++argv) != (char *) 0) | |
| 1460 { | |
| 1461 *ld1++ = *ld2++ = arg; | |
| 1462 | |
| 1463 if (arg[0] == '-') | |
| 1464 { | |
| 1465 switch (arg[1]) | |
| 1466 { | |
| 1467 case 'd': | |
| 1468 if (!strcmp (arg, "-debug")) | |
| 1469 { | |
| 1470 /* Already parsed. */ | |
| 1471 ld1--; | |
| 1472 ld2--; | |
| 1473 } | |
| 1474 if (!strcmp (arg, "-dynamic-linker") && argv[1]) | |
| 1475 { | |
| 1476 ++argv; | |
| 1477 *ld1++ = *ld2++ = *argv; | |
| 1478 } | |
| 1479 break; | |
| 1480 | |
|
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1481 case 'f': |
|
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1482 if (strncmp (arg, "-flto", 5) == 0) |
|
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1483 { |
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1484 #ifdef ENABLE_LTO |
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1485 /* Do not pass LTO flag to the linker. */ |
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1486 ld1--; |
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1487 ld2--; |
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1488 #else |
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|
1489 error ("LTO support has not been enabled in this " |
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1490 "configuration"); |
|
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|
1491 #endif |
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1492 } |
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1493 break; |
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|
1494 |
| 0 | 1495 case 'l': |
| 1496 if (first_file) | |
| 1497 { | |
| 1498 /* place o_file BEFORE this argument! */ | |
| 1499 first_file = 0; | |
| 1500 ld2--; | |
| 1501 *ld2++ = o_file; | |
| 1502 *ld2++ = arg; | |
| 1503 } | |
| 1504 #ifdef COLLECT_EXPORT_LIST | |
| 1505 { | |
| 1506 /* Resolving full library name. */ | |
| 1507 const char *s = resolve_lib_name (arg+2); | |
| 1508 | |
| 1509 /* Saving a full library name. */ | |
| 1510 add_to_list (&libs, s); | |
| 1511 } | |
| 1512 #endif | |
| 1513 break; | |
| 1514 | |
| 1515 #ifdef COLLECT_EXPORT_LIST | |
| 1516 /* Saving directories where to search for libraries. */ | |
| 1517 case 'L': | |
| 1518 add_prefix (&cmdline_lib_dirs, arg+2); | |
| 1519 break; | |
| 1520 #else | |
| 1521 #if LINK_ELIMINATE_DUPLICATE_LDIRECTORIES | |
| 1522 case 'L': | |
|
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|
1523 if (is_in_args (arg, |
|
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|
1524 CONST_CAST2 (const char **, char **, ld1_argv), |
|
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|
1525 ld1 - 1)) |
| 0 | 1526 --ld1; |
| 1527 break; | |
| 1528 #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */ | |
| 1529 #endif | |
| 1530 | |
| 1531 case 'o': | |
| 1532 if (arg[2] == '\0') | |
| 1533 output_file = *ld1++ = *ld2++ = *++argv; | |
|
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|
1534 else |
| 0 | 1535 output_file = &arg[2]; |
| 1536 break; | |
| 1537 | |
| 1538 case 'r': | |
| 1539 if (arg[2] == '\0') | |
| 1540 rflag = 1; | |
| 1541 break; | |
| 1542 | |
| 1543 case 's': | |
| 1544 if (arg[2] == '\0' && do_collecting) | |
| 1545 { | |
| 1546 /* We must strip after the nm run, otherwise C++ linking | |
| 1547 will not work. Thus we strip in the second ld run, or | |
| 1548 else with strip if there is no second ld run. */ | |
| 1549 strip_flag = 1; | |
| 1550 ld1--; | |
| 1551 } | |
| 1552 break; | |
| 1553 | |
| 1554 case 'v': | |
| 1555 if (arg[2] == '\0') | |
|
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|
1556 vflag = true; |
| 0 | 1557 break; |
| 1558 | |
| 1559 case '-': | |
| 1560 if (strcmp (arg, "--no-demangle") == 0) | |
| 1561 { | |
| 1562 demangle_flag = arg; | |
| 1563 no_demangle = 1; | |
| 1564 ld1--; | |
| 1565 ld2--; | |
| 1566 } | |
| 1567 else if (strncmp (arg, "--demangle", 10) == 0) | |
| 1568 { | |
| 1569 demangle_flag = arg; | |
| 1570 no_demangle = 0; | |
| 1571 #ifndef HAVE_LD_DEMANGLE | |
| 1572 if (arg[10] == '=') | |
| 1573 { | |
| 1574 enum demangling_styles style | |
| 1575 = cplus_demangle_name_to_style (arg+11); | |
| 1576 if (style == unknown_demangling) | |
| 1577 error ("unknown demangling style '%s'", arg+11); | |
| 1578 else | |
| 1579 current_demangling_style = style; | |
| 1580 } | |
| 1581 #endif | |
| 1582 ld1--; | |
| 1583 ld2--; | |
| 1584 } | |
|
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|
1585 else if (strncmp (arg, "--sysroot=", 10) == 0) |
|
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|
1586 target_system_root = arg + 10; |
|
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|
1587 else if (strcmp (arg, "--version") == 0) |
|
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|
1588 vflag = true; |
|
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|
1589 else if (strcmp (arg, "--help") == 0) |
|
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|
1590 helpflag = true; |
| 0 | 1591 break; |
| 1592 } | |
| 1593 } | |
| 1594 else if ((p = strrchr (arg, '.')) != (char *) 0 | |
| 1595 && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0 | |
| 1596 || strcmp (p, ".so") == 0 || strcmp (p, ".lo") == 0 | |
| 1597 || strcmp (p, ".obj") == 0)) | |
| 1598 { | |
| 1599 if (first_file) | |
| 1600 { | |
| 1601 first_file = 0; | |
| 1602 if (p[1] == 'o') | |
| 1603 *ld2++ = o_file; | |
| 1604 else | |
| 1605 { | |
| 1606 /* place o_file BEFORE this argument! */ | |
| 1607 ld2--; | |
| 1608 *ld2++ = o_file; | |
| 1609 *ld2++ = arg; | |
| 1610 } | |
| 1611 } | |
| 1612 if (p[1] == 'o' || p[1] == 'l') | |
| 1613 *object++ = arg; | |
| 1614 #ifdef COLLECT_EXPORT_LIST | |
| 1615 /* libraries can be specified directly, i.e. without -l flag. */ | |
| 1616 else | |
| 1617 { | |
| 1618 /* Saving a full library name. */ | |
| 1619 add_to_list (&libs, arg); | |
| 1620 } | |
| 1621 #endif | |
| 1622 } | |
| 1623 } | |
| 1624 | |
| 1625 #ifdef COLLECT_EXPORT_LIST | |
| 1626 /* This is added only for debugging purposes. */ | |
| 1627 if (debug) | |
| 1628 { | |
| 1629 fprintf (stderr, "List of libraries:\n"); | |
| 1630 dump_list (stderr, "\t", libs.first); | |
| 1631 } | |
| 1632 | |
| 1633 /* The AIX linker will discard static constructors in object files if | |
|
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|
1634 nothing else in the file is referenced, so look at them first. Unless |
|
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|
1635 we are building a shared object, ignore the eh frame tables, as we |
|
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|
1636 would otherwise reference them all, hence drag all the corresponding |
|
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|
1637 objects even if nothing else is referenced. */ |
| 0 | 1638 { |
|
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|
1639 const char **export_object_lst |
|
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|
1640 = CONST_CAST2 (const char **, char **, object_lst); |
|
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|
1641 |
| 0 | 1642 struct id *list = libs.first; |
| 1643 | |
|
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1644 /* Compute the filter to use from the current one, do scan, then adjust |
|
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|
1645 the "current" filter to remove what we just included here. This will |
|
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|
1646 control whether we need a first pass link later on or not, and what |
|
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|
1647 will remain to be scanned there. */ |
|
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1648 |
|
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1649 scanfilter this_filter = ld1_filter; |
|
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|
1650 #if HAVE_AS_REF |
|
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1651 if (!shared_obj) |
|
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1652 this_filter &= ~SCAN_DWEH; |
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1653 #endif |
|
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|
1654 |
|
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|
1655 while (export_object_lst < object) |
|
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|
1656 scan_prog_file (*export_object_lst++, PASS_OBJ, this_filter); |
|
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|
1657 |
| 0 | 1658 for (; list; list = list->next) |
|
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|
1659 scan_prog_file (list->name, PASS_FIRST, this_filter); |
|
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|
1660 |
|
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|
1661 ld1_filter = ld1_filter & ~this_filter; |
| 0 | 1662 } |
| 1663 | |
| 1664 if (exports.first) | |
| 1665 { | |
| 1666 char *buf = concat ("-bE:", export_file, NULL); | |
| 1667 | |
| 1668 *ld1++ = buf; | |
| 1669 *ld2++ = buf; | |
| 1670 | |
| 1671 exportf = fopen (export_file, "w"); | |
| 1672 if (exportf == (FILE *) 0) | |
| 1673 fatal_perror ("fopen %s", export_file); | |
| 1674 write_aix_file (exportf, exports.first); | |
| 1675 if (fclose (exportf)) | |
| 1676 fatal_perror ("fclose %s", export_file); | |
| 1677 } | |
| 1678 #endif | |
| 1679 | |
| 1680 *c_ptr++ = c_file; | |
| 1681 *c_ptr = *ld1 = *object = (char *) 0; | |
| 1682 | |
| 1683 if (vflag) | |
| 1684 { | |
| 1685 notice ("collect2 version %s", version_string); | |
| 1686 #ifdef TARGET_VERSION | |
| 1687 TARGET_VERSION; | |
| 1688 #endif | |
| 1689 fprintf (stderr, "\n"); | |
| 1690 } | |
| 1691 | |
|
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|
1692 if (helpflag) |
|
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|
1693 { |
|
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|
1694 printf ("Usage: collect2 [options]\n"); |
|
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|
1695 printf (" Wrap linker and generate constructor code if needed.\n"); |
|
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|
1696 printf (" Options:\n"); |
|
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|
1697 printf (" -debug Enable debug output\n"); |
|
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|
1698 printf (" --help Display this information\n"); |
|
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|
1699 printf (" -v, --version Display this program's version number\n"); |
|
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|
1700 printf ("\n"); |
|
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1701 printf ("Overview: http://gcc.gnu.org/onlinedocs/gccint/Collect2.html\n"); |
|
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1702 printf ("Report bugs: %s\n", bug_report_url); |
|
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|
1703 printf ("\n"); |
|
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|
1704 } |
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|
1705 |
| 0 | 1706 if (debug) |
| 1707 { | |
| 1708 const char *ptr; | |
| 1709 fprintf (stderr, "ld_file_name = %s\n", | |
| 1710 (ld_file_name ? ld_file_name : "not found")); | |
| 1711 fprintf (stderr, "c_file_name = %s\n", | |
| 1712 (c_file_name ? c_file_name : "not found")); | |
| 1713 fprintf (stderr, "nm_file_name = %s\n", | |
| 1714 (nm_file_name ? nm_file_name : "not found")); | |
| 1715 #ifdef LDD_SUFFIX | |
| 1716 fprintf (stderr, "ldd_file_name = %s\n", | |
| 1717 (ldd_file_name ? ldd_file_name : "not found")); | |
| 1718 #endif | |
| 1719 fprintf (stderr, "strip_file_name = %s\n", | |
| 1720 (strip_file_name ? strip_file_name : "not found")); | |
| 1721 fprintf (stderr, "c_file = %s\n", | |
| 1722 (c_file ? c_file : "not found")); | |
| 1723 fprintf (stderr, "o_file = %s\n", | |
| 1724 (o_file ? o_file : "not found")); | |
| 1725 | |
| 1726 ptr = getenv ("COLLECT_GCC_OPTIONS"); | |
| 1727 if (ptr) | |
| 1728 fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr); | |
| 1729 | |
| 1730 ptr = getenv ("COLLECT_GCC"); | |
| 1731 if (ptr) | |
| 1732 fprintf (stderr, "COLLECT_GCC = %s\n", ptr); | |
| 1733 | |
| 1734 ptr = getenv ("COMPILER_PATH"); | |
| 1735 if (ptr) | |
| 1736 fprintf (stderr, "COMPILER_PATH = %s\n", ptr); | |
| 1737 | |
| 1738 ptr = getenv (LIBRARY_PATH_ENV); | |
| 1739 if (ptr) | |
| 1740 fprintf (stderr, "%-20s= %s\n", LIBRARY_PATH_ENV, ptr); | |
| 1741 | |
| 1742 fprintf (stderr, "\n"); | |
| 1743 } | |
| 1744 | |
| 1745 /* Load the program, searching all libraries and attempting to provide | |
|
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|
1746 undefined symbols from repository information. |
|
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|
1747 |
|
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|
1748 If -r or they will be run via some other method, do not build the |
| 0 | 1749 constructor or destructor list, just return now. */ |
|
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|
1750 { |
|
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|
1751 bool early_exit |
|
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|
1752 = rflag || (! DO_COLLECT_EXPORT_LIST && ! do_collecting); |
|
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|
1753 |
|
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1754 /* Perform the first pass link now, if we're about to exit or if we need |
|
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|
1755 to scan for things we haven't collected yet before pursuing further. |
|
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|
1756 |
|
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|
1757 On AIX, the latter typically includes nothing for shared objects or |
|
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|
1758 frame tables for an executable, out of what the required early scan on |
|
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1759 objects and libraries has performed above. In the !shared_obj case, we |
|
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1760 expect the relevant tables to be dragged together with their associated |
|
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|
1761 functions from precise cross reference insertions by the compiler. */ |
|
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1762 |
|
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1763 if (early_exit || ld1_filter != SCAN_NOTHING) |
| 0 | 1764 do_tlink (ld1_argv, object_lst); |
| 1765 | |
|
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1766 if (early_exit) |
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1767 { |
|
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1768 #ifdef COLLECT_EXPORT_LIST |
|
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1769 /* Make sure we delete the export file we may have created. */ |
|
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1770 if (export_file != 0 && export_file[0]) |
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|
1771 maybe_unlink (export_file); |
| 0 | 1772 #endif |
|
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1773 if (lto_mode != LTO_MODE_NONE) |
|
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1774 maybe_run_lto_and_relink (ld1_argv, object_lst, object, false); |
|
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1775 else |
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1776 post_ld_pass (false); |
|
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1777 |
|
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|
1778 maybe_unlink (c_file); |
|
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1779 maybe_unlink (o_file); |
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1780 return 0; |
|
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1781 } |
|
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1782 } |
|
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1783 |
|
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1784 /* Unless we have done it all already, examine the namelist and search for |
|
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1785 static constructors and destructors to call. Write the constructor and |
|
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1786 destructor tables to a .s file and reload. */ |
|
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1787 |
|
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1788 if (ld1_filter != SCAN_NOTHING) |
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1789 scan_prog_file (output_file, PASS_FIRST, ld1_filter); |
| 0 | 1790 |
| 1791 #ifdef SCAN_LIBRARIES | |
| 1792 scan_libraries (output_file); | |
| 1793 #endif | |
| 1794 | |
| 1795 if (debug) | |
| 1796 { | |
|
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1797 notice_translated (ngettext ("%d constructor found\n", |
|
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1798 "%d constructors found\n", |
|
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1799 constructors.number), |
|
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1800 constructors.number); |
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1801 notice_translated (ngettext ("%d destructor found\n", |
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1802 "%d destructors found\n", |
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1803 destructors.number), |
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1804 destructors.number); |
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1805 notice_translated (ngettext("%d frame table found\n", |
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1806 "%d frame tables found\n", |
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1807 frame_tables.number), |
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1808 frame_tables.number); |
| 0 | 1809 } |
| 1810 | |
|
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1811 /* If the scan exposed nothing of special interest, there's no need to |
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1812 generate the glue code and relink so return now. */ |
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1813 |
| 0 | 1814 if (constructors.number == 0 && destructors.number == 0 |
| 1815 && frame_tables.number == 0 | |
| 1816 #if defined (SCAN_LIBRARIES) || defined (COLLECT_EXPORT_LIST) | |
| 1817 /* If we will be running these functions ourselves, we want to emit | |
| 1818 stubs into the shared library so that we do not have to relink | |
| 1819 dependent programs when we add static objects. */ | |
| 1820 && ! shared_obj | |
| 1821 #endif | |
| 1822 ) | |
| 1823 { | |
|
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1824 /* Do tlink without additional code generation now if we didn't |
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1825 do it earlier for scanning purposes. */ |
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1826 if (ld1_filter == SCAN_NOTHING) |
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1827 do_tlink (ld1_argv, object_lst); |
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1828 |
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1829 if (lto_mode) |
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1830 maybe_run_lto_and_relink (ld1_argv, object_lst, object, false); |
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1831 |
| 0 | 1832 /* Strip now if it was requested on the command line. */ |
| 1833 if (strip_flag) | |
| 1834 { | |
| 1835 char **real_strip_argv = XCNEWVEC (char *, 3); | |
|
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1836 const char ** strip_argv = CONST_CAST2 (const char **, char **, |
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1837 real_strip_argv); |
| 0 | 1838 |
| 1839 strip_argv[0] = strip_file_name; | |
| 1840 strip_argv[1] = output_file; | |
| 1841 strip_argv[2] = (char *) 0; | |
| 1842 fork_execute ("strip", real_strip_argv); | |
| 1843 } | |
| 1844 | |
| 1845 #ifdef COLLECT_EXPORT_LIST | |
| 1846 maybe_unlink (export_file); | |
| 1847 #endif | |
|
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1848 post_ld_pass (false); |
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1849 |
| 0 | 1850 maybe_unlink (c_file); |
| 1851 maybe_unlink (o_file); | |
| 1852 return 0; | |
| 1853 } | |
| 1854 | |
| 1855 /* Sort ctor and dtor lists by priority. */ | |
| 1856 sort_ids (&constructors); | |
| 1857 sort_ids (&destructors); | |
| 1858 | |
| 1859 maybe_unlink(output_file); | |
| 1860 outf = fopen (c_file, "w"); | |
| 1861 if (outf == (FILE *) 0) | |
| 1862 fatal_perror ("fopen %s", c_file); | |
| 1863 | |
| 1864 write_c_file (outf, c_file); | |
| 1865 | |
| 1866 if (fclose (outf)) | |
| 1867 fatal_perror ("fclose %s", c_file); | |
| 1868 | |
| 1869 /* Tell the linker that we have initializer and finalizer functions. */ | |
| 1870 #ifdef LD_INIT_SWITCH | |
| 1871 #ifdef COLLECT_EXPORT_LIST | |
| 1872 *ld2++ = concat (LD_INIT_SWITCH, ":", initname, ":", fininame, NULL); | |
| 1873 #else | |
| 1874 *ld2++ = LD_INIT_SWITCH; | |
| 1875 *ld2++ = initname; | |
| 1876 *ld2++ = LD_FINI_SWITCH; | |
| 1877 *ld2++ = fininame; | |
| 1878 #endif | |
| 1879 #endif | |
| 1880 | |
| 1881 #ifdef COLLECT_EXPORT_LIST | |
| 1882 if (shared_obj) | |
| 1883 { | |
| 1884 /* If we did not add export flag to link arguments before, add it to | |
| 1885 second link phase now. No new exports should have been added. */ | |
| 1886 if (! exports.first) | |
| 1887 *ld2++ = concat ("-bE:", export_file, NULL); | |
| 1888 | |
| 1889 #ifndef LD_INIT_SWITCH | |
| 1890 add_to_list (&exports, initname); | |
| 1891 add_to_list (&exports, fininame); | |
| 1892 add_to_list (&exports, "_GLOBAL__DI"); | |
| 1893 add_to_list (&exports, "_GLOBAL__DD"); | |
| 1894 #endif | |
| 1895 exportf = fopen (export_file, "w"); | |
| 1896 if (exportf == (FILE *) 0) | |
| 1897 fatal_perror ("fopen %s", export_file); | |
| 1898 write_aix_file (exportf, exports.first); | |
| 1899 if (fclose (exportf)) | |
| 1900 fatal_perror ("fclose %s", export_file); | |
| 1901 } | |
| 1902 #endif | |
| 1903 | |
| 1904 /* End of arguments to second link phase. */ | |
| 1905 *ld2 = (char*) 0; | |
| 1906 | |
| 1907 if (debug) | |
| 1908 { | |
| 1909 fprintf (stderr, "\n========== output_file = %s, c_file = %s\n", | |
| 1910 output_file, c_file); | |
| 1911 write_c_file (stderr, "stderr"); | |
| 1912 fprintf (stderr, "========== end of c_file\n\n"); | |
| 1913 #ifdef COLLECT_EXPORT_LIST | |
| 1914 fprintf (stderr, "\n========== export_file = %s\n", export_file); | |
| 1915 write_aix_file (stderr, exports.first); | |
| 1916 fprintf (stderr, "========== end of export_file\n\n"); | |
| 1917 #endif | |
| 1918 } | |
| 1919 | |
| 1920 /* Assemble the constructor and destructor tables. | |
| 1921 Link the tables in with the rest of the program. */ | |
| 1922 | |
| 1923 fork_execute ("gcc", c_argv); | |
| 1924 #ifdef COLLECT_EXPORT_LIST | |
| 1925 /* On AIX we must call tlink because of possible templates resolution. */ | |
| 1926 do_tlink (ld2_argv, object_lst); | |
|
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1927 |
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|
1928 if (lto_mode) |
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1929 maybe_run_lto_and_relink (ld2_argv, object_lst, object, false); |
| 0 | 1930 #else |
| 1931 /* Otherwise, simply call ld because tlink is already done. */ | |
|
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1932 if (lto_mode) |
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1933 maybe_run_lto_and_relink (ld2_argv, object_lst, object, true); |
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1934 else |
|
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1935 { |
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1936 fork_execute ("ld", ld2_argv); |
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1937 post_ld_pass (false); |
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|
1938 } |
| 0 | 1939 |
| 1940 /* Let scan_prog_file do any final mods (OSF/rose needs this for | |
| 1941 constructors/destructors in shared libraries. */ | |
|
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|
1942 scan_prog_file (output_file, PASS_SECOND, SCAN_ALL); |
| 0 | 1943 #endif |
| 1944 | |
| 1945 maybe_unlink (c_file); | |
| 1946 maybe_unlink (o_file); | |
| 1947 | |
| 1948 #ifdef COLLECT_EXPORT_LIST | |
| 1949 maybe_unlink (export_file); | |
| 1950 #endif | |
| 1951 | |
| 1952 return 0; | |
| 1953 } | |
| 1954 | |
| 1955 | |
| 1956 /* Wait for a process to finish, and exit if a nonzero status is found. */ | |
| 1957 | |
| 1958 int | |
| 1959 collect_wait (const char *prog, struct pex_obj *pex) | |
| 1960 { | |
| 1961 int status; | |
| 1962 | |
| 1963 if (!pex_get_status (pex, 1, &status)) | |
| 1964 fatal_perror ("can't get program status"); | |
| 1965 pex_free (pex); | |
| 1966 | |
| 1967 if (status) | |
| 1968 { | |
| 1969 if (WIFSIGNALED (status)) | |
| 1970 { | |
| 1971 int sig = WTERMSIG (status); | |
| 1972 error ("%s terminated with signal %d [%s]%s", | |
| 1973 prog, sig, strsignal(sig), | |
| 1974 WCOREDUMP(status) ? ", core dumped" : ""); | |
| 1975 collect_exit (FATAL_EXIT_CODE); | |
| 1976 } | |
| 1977 | |
| 1978 if (WIFEXITED (status)) | |
| 1979 return WEXITSTATUS (status); | |
| 1980 } | |
| 1981 return 0; | |
| 1982 } | |
| 1983 | |
| 1984 static void | |
| 1985 do_wait (const char *prog, struct pex_obj *pex) | |
| 1986 { | |
| 1987 int ret = collect_wait (prog, pex); | |
| 1988 if (ret != 0) | |
| 1989 { | |
| 1990 error ("%s returned %d exit status", prog, ret); | |
| 1991 collect_exit (ret); | |
| 1992 } | |
| 1993 | |
| 1994 if (response_file) | |
| 1995 { | |
| 1996 unlink (response_file); | |
| 1997 response_file = NULL; | |
| 1998 } | |
| 1999 } | |
| 2000 | |
| 2001 | |
| 2002 /* Execute a program, and wait for the reply. */ | |
| 2003 | |
| 2004 struct pex_obj * | |
| 2005 collect_execute (const char *prog, char **argv, const char *outname, | |
|
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2006 const char *errname, int flags) |
| 0 | 2007 { |
| 2008 struct pex_obj *pex; | |
| 2009 const char *errmsg; | |
| 2010 int err; | |
| 2011 char *response_arg = NULL; | |
| 2012 char *response_argv[3] ATTRIBUTE_UNUSED; | |
| 2013 | |
| 2014 if (HAVE_GNU_LD && at_file_supplied && argv[0] != NULL) | |
| 2015 { | |
| 2016 /* If using @file arguments, create a temporary file and put the | |
| 2017 contents of argv into it. Then change argv to an array corresponding | |
| 2018 to a single argument @FILE, where FILE is the temporary filename. */ | |
| 2019 | |
| 2020 char **current_argv = argv + 1; | |
| 2021 char *argv0 = argv[0]; | |
| 2022 int status; | |
| 2023 FILE *f; | |
| 2024 | |
| 2025 /* Note: we assume argv contains at least one element; this is | |
| 2026 checked above. */ | |
| 2027 | |
| 2028 response_file = make_temp_file (""); | |
| 2029 | |
| 2030 f = fopen (response_file, "w"); | |
| 2031 | |
| 2032 if (f == NULL) | |
| 2033 fatal ("could not open response file %s", response_file); | |
| 2034 | |
| 2035 status = writeargv (current_argv, f); | |
| 2036 | |
| 2037 if (status) | |
| 2038 fatal ("could not write to response file %s", response_file); | |
| 2039 | |
| 2040 status = fclose (f); | |
| 2041 | |
| 2042 if (EOF == status) | |
| 2043 fatal ("could not close response file %s", response_file); | |
| 2044 | |
| 2045 response_arg = concat ("@", response_file, NULL); | |
| 2046 response_argv[0] = argv0; | |
| 2047 response_argv[1] = response_arg; | |
| 2048 response_argv[2] = NULL; | |
| 2049 | |
| 2050 argv = response_argv; | |
| 2051 } | |
| 2052 | |
| 2053 if (vflag || debug) | |
| 2054 { | |
| 2055 char **p_argv; | |
| 2056 const char *str; | |
| 2057 | |
| 2058 if (argv[0]) | |
| 2059 fprintf (stderr, "%s", argv[0]); | |
| 2060 else | |
| 2061 notice ("[cannot find %s]", prog); | |
| 2062 | |
| 2063 for (p_argv = &argv[1]; (str = *p_argv) != (char *) 0; p_argv++) | |
| 2064 fprintf (stderr, " %s", str); | |
| 2065 | |
| 2066 fprintf (stderr, "\n"); | |
| 2067 } | |
| 2068 | |
| 2069 fflush (stdout); | |
| 2070 fflush (stderr); | |
| 2071 | |
| 2072 /* If we cannot find a program we need, complain error. Do this here | |
| 2073 since we might not end up needing something that we could not find. */ | |
| 2074 | |
| 2075 if (argv[0] == 0) | |
| 2076 fatal ("cannot find '%s'", prog); | |
| 2077 | |
| 2078 pex = pex_init (0, "collect2", NULL); | |
| 2079 if (pex == NULL) | |
| 2080 fatal_perror ("pex_init failed"); | |
| 2081 | |
|
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2082 errmsg = pex_run (pex, flags, argv[0], argv, outname, |
| 0 | 2083 errname, &err); |
| 2084 if (errmsg != NULL) | |
| 2085 { | |
| 2086 if (err != 0) | |
| 2087 { | |
| 2088 errno = err; | |
| 2089 fatal_perror (errmsg); | |
| 2090 } | |
| 2091 else | |
| 2092 fatal (errmsg); | |
| 2093 } | |
| 2094 | |
| 2095 if (response_arg) | |
| 2096 free (response_arg); | |
| 2097 | |
| 2098 return pex; | |
| 2099 } | |
| 2100 | |
| 2101 static void | |
| 2102 fork_execute (const char *prog, char **argv) | |
| 2103 { | |
| 2104 struct pex_obj *pex; | |
| 2105 | |
|
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2106 pex = collect_execute (prog, argv, NULL, NULL, PEX_LAST | PEX_SEARCH); |
| 0 | 2107 do_wait (prog, pex); |
| 2108 } | |
| 2109 | |
| 2110 /* Unlink a file unless we are debugging. */ | |
| 2111 | |
| 2112 static void | |
| 2113 maybe_unlink (const char *file) | |
| 2114 { | |
| 2115 if (!debug) | |
| 2116 unlink_if_ordinary (file); | |
| 2117 else | |
| 2118 notice ("[Leaving %s]\n", file); | |
| 2119 } | |
| 2120 | |
|
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2121 /* Call maybe_unlink on the NULL-terminated list, FILE_LIST. */ |
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2122 |
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2123 static void |
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2124 maybe_unlink_list (char **file_list) |
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2125 { |
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2126 char **tmp = file_list; |
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2127 |
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2128 while (*tmp) |
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2129 maybe_unlink (*(tmp++)); |
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2130 } |
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2131 |
| 0 | 2132 |
| 2133 static long sequence_number = 0; | |
| 2134 | |
| 2135 /* Add a name to a linked list. */ | |
| 2136 | |
| 2137 static void | |
| 2138 add_to_list (struct head *head_ptr, const char *name) | |
| 2139 { | |
| 2140 struct id *newid | |
| 2141 = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1); | |
| 2142 struct id *p; | |
| 2143 strcpy (newid->name, name); | |
| 2144 | |
| 2145 if (head_ptr->first) | |
| 2146 head_ptr->last->next = newid; | |
| 2147 else | |
| 2148 head_ptr->first = newid; | |
| 2149 | |
| 2150 /* Check for duplicate symbols. */ | |
| 2151 for (p = head_ptr->first; | |
| 2152 strcmp (name, p->name) != 0; | |
| 2153 p = p->next) | |
| 2154 ; | |
| 2155 if (p != newid) | |
| 2156 { | |
| 2157 head_ptr->last->next = 0; | |
| 2158 free (newid); | |
| 2159 return; | |
| 2160 } | |
| 2161 | |
| 2162 newid->sequence = ++sequence_number; | |
| 2163 head_ptr->last = newid; | |
| 2164 head_ptr->number++; | |
| 2165 } | |
| 2166 | |
| 2167 /* Grab the init priority number from an init function name that | |
| 2168 looks like "_GLOBAL_.I.12345.foo". */ | |
| 2169 | |
| 2170 static int | |
| 2171 extract_init_priority (const char *name) | |
| 2172 { | |
| 2173 int pos = 0, pri; | |
| 2174 | |
| 2175 while (name[pos] == '_') | |
| 2176 ++pos; | |
| 2177 pos += 10; /* strlen ("GLOBAL__X_") */ | |
| 2178 | |
| 2179 /* Extract init_p number from ctor/dtor name. */ | |
| 2180 pri = atoi (name + pos); | |
| 2181 return pri ? pri : DEFAULT_INIT_PRIORITY; | |
| 2182 } | |
| 2183 | |
| 2184 /* Insertion sort the ids from ctor/dtor list HEAD_PTR in descending order. | |
| 2185 ctors will be run from right to left, dtors from left to right. */ | |
| 2186 | |
| 2187 static void | |
| 2188 sort_ids (struct head *head_ptr) | |
| 2189 { | |
| 2190 /* id holds the current element to insert. id_next holds the next | |
| 2191 element to insert. id_ptr iterates through the already sorted elements | |
| 2192 looking for the place to insert id. */ | |
| 2193 struct id *id, *id_next, **id_ptr; | |
| 2194 | |
| 2195 id = head_ptr->first; | |
| 2196 | |
| 2197 /* We don't have any sorted elements yet. */ | |
| 2198 head_ptr->first = NULL; | |
| 2199 | |
| 2200 for (; id; id = id_next) | |
| 2201 { | |
| 2202 id_next = id->next; | |
| 2203 id->sequence = extract_init_priority (id->name); | |
| 2204 | |
| 2205 for (id_ptr = &(head_ptr->first); ; id_ptr = &((*id_ptr)->next)) | |
| 2206 if (*id_ptr == NULL | |
| 2207 /* If the sequence numbers are the same, we put the id from the | |
| 2208 file later on the command line later in the list. */ | |
| 2209 || id->sequence > (*id_ptr)->sequence | |
| 2210 /* Hack: do lexical compare, too. | |
| 2211 || (id->sequence == (*id_ptr)->sequence | |
| 2212 && strcmp (id->name, (*id_ptr)->name) > 0) */ | |
| 2213 ) | |
| 2214 { | |
| 2215 id->next = *id_ptr; | |
| 2216 *id_ptr = id; | |
| 2217 break; | |
| 2218 } | |
| 2219 } | |
| 2220 | |
| 2221 /* Now set the sequence numbers properly so write_c_file works. */ | |
| 2222 for (id = head_ptr->first; id; id = id->next) | |
| 2223 id->sequence = ++sequence_number; | |
| 2224 } | |
| 2225 | |
| 2226 /* Write: `prefix', the names on list LIST, `suffix'. */ | |
| 2227 | |
| 2228 static void | |
| 2229 write_list (FILE *stream, const char *prefix, struct id *list) | |
| 2230 { | |
| 2231 while (list) | |
| 2232 { | |
| 2233 fprintf (stream, "%sx%d,\n", prefix, list->sequence); | |
| 2234 list = list->next; | |
| 2235 } | |
| 2236 } | |
| 2237 | |
| 2238 #if LINK_ELIMINATE_DUPLICATE_LDIRECTORIES | |
| 2239 /* Given a STRING, return nonzero if it occurs in the list in range | |
| 2240 [ARGS_BEGIN,ARGS_END). */ | |
| 2241 | |
| 2242 static int | |
| 2243 is_in_args (const char *string, const char **args_begin, | |
| 2244 const char **args_end) | |
| 2245 { | |
| 2246 const char **args_pointer; | |
| 2247 for (args_pointer = args_begin; args_pointer != args_end; ++args_pointer) | |
| 2248 if (strcmp (string, *args_pointer) == 0) | |
| 2249 return 1; | |
| 2250 return 0; | |
| 2251 } | |
| 2252 #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */ | |
| 2253 | |
| 2254 #ifdef COLLECT_EXPORT_LIST | |
| 2255 /* This function is really used only on AIX, but may be useful. */ | |
| 2256 #if 0 | |
| 2257 static int | |
| 2258 is_in_list (const char *prefix, struct id *list) | |
| 2259 { | |
| 2260 while (list) | |
| 2261 { | |
| 2262 if (!strcmp (prefix, list->name)) return 1; | |
| 2263 list = list->next; | |
| 2264 } | |
| 2265 return 0; | |
| 2266 } | |
| 2267 #endif | |
| 2268 #endif /* COLLECT_EXPORT_LIST */ | |
| 2269 | |
| 2270 /* Added for debugging purpose. */ | |
| 2271 #ifdef COLLECT_EXPORT_LIST | |
| 2272 static void | |
| 2273 dump_list (FILE *stream, const char *prefix, struct id *list) | |
| 2274 { | |
| 2275 while (list) | |
| 2276 { | |
| 2277 fprintf (stream, "%s%s,\n", prefix, list->name); | |
| 2278 list = list->next; | |
| 2279 } | |
| 2280 } | |
| 2281 #endif | |
| 2282 | |
| 2283 #if 0 | |
| 2284 static void | |
| 2285 dump_prefix_list (FILE *stream, const char *prefix, struct prefix_list *list) | |
| 2286 { | |
| 2287 while (list) | |
| 2288 { | |
| 2289 fprintf (stream, "%s%s,\n", prefix, list->prefix); | |
| 2290 list = list->next; | |
| 2291 } | |
| 2292 } | |
| 2293 #endif | |
| 2294 | |
| 2295 static void | |
| 2296 write_list_with_asm (FILE *stream, const char *prefix, struct id *list) | |
| 2297 { | |
| 2298 while (list) | |
| 2299 { | |
| 2300 fprintf (stream, "%sx%d __asm__ (\"%s\");\n", | |
| 2301 prefix, list->sequence, list->name); | |
| 2302 list = list->next; | |
| 2303 } | |
| 2304 } | |
| 2305 | |
| 2306 /* Write out the constructor and destructor tables statically (for a shared | |
| 2307 object), along with the functions to execute them. */ | |
| 2308 | |
| 2309 static void | |
| 2310 write_c_file_stat (FILE *stream, const char *name ATTRIBUTE_UNUSED) | |
| 2311 { | |
| 2312 const char *p, *q; | |
| 2313 char *prefix, *r; | |
| 2314 int frames = (frame_tables.number > 0); | |
| 2315 | |
| 2316 /* Figure out name of output_file, stripping off .so version. */ | |
| 2317 p = strrchr (output_file, '/'); | |
| 2318 if (p == 0) | |
| 2319 p = output_file; | |
| 2320 else | |
| 2321 p++; | |
| 2322 q = p; | |
| 2323 while (q) | |
| 2324 { | |
| 2325 q = strchr (q,'.'); | |
| 2326 if (q == 0) | |
| 2327 { | |
| 2328 q = p + strlen (p); | |
| 2329 break; | |
| 2330 } | |
| 2331 else | |
| 2332 { | |
| 2333 if (strncmp (q, SHLIB_SUFFIX, strlen (SHLIB_SUFFIX)) == 0) | |
| 2334 { | |
| 2335 q += strlen (SHLIB_SUFFIX); | |
| 2336 break; | |
| 2337 } | |
| 2338 else | |
| 2339 q++; | |
| 2340 } | |
| 2341 } | |
| 2342 /* q points to null at end of the string (or . of the .so version) */ | |
| 2343 prefix = XNEWVEC (char, q - p + 1); | |
| 2344 strncpy (prefix, p, q - p); | |
| 2345 prefix[q - p] = 0; | |
| 2346 for (r = prefix; *r; r++) | |
| 2347 if (!ISALNUM ((unsigned char)*r)) | |
| 2348 *r = '_'; | |
| 2349 if (debug) | |
| 2350 notice ("\nwrite_c_file - output name is %s, prefix is %s\n", | |
| 2351 output_file, prefix); | |
| 2352 | |
| 2353 initname = concat ("_GLOBAL__FI_", prefix, NULL); | |
| 2354 fininame = concat ("_GLOBAL__FD_", prefix, NULL); | |
| 2355 | |
| 2356 free (prefix); | |
| 2357 | |
| 2358 /* Write the tables as C code. */ | |
| 2359 | |
| 2360 fprintf (stream, "static int count;\n"); | |
| 2361 fprintf (stream, "typedef void entry_pt();\n"); | |
| 2362 write_list_with_asm (stream, "extern entry_pt ", constructors.first); | |
| 2363 | |
| 2364 if (frames) | |
| 2365 { | |
| 2366 write_list_with_asm (stream, "extern void *", frame_tables.first); | |
| 2367 | |
| 2368 fprintf (stream, "\tstatic void *frame_table[] = {\n"); | |
| 2369 write_list (stream, "\t\t&", frame_tables.first); | |
| 2370 fprintf (stream, "\t0\n};\n"); | |
| 2371 | |
| 2372 /* This must match what's in frame.h. */ | |
| 2373 fprintf (stream, "struct object {\n"); | |
| 2374 fprintf (stream, " void *pc_begin;\n"); | |
| 2375 fprintf (stream, " void *pc_end;\n"); | |
| 2376 fprintf (stream, " void *fde_begin;\n"); | |
| 2377 fprintf (stream, " void *fde_array;\n"); | |
| 2378 fprintf (stream, " __SIZE_TYPE__ count;\n"); | |
| 2379 fprintf (stream, " struct object *next;\n"); | |
| 2380 fprintf (stream, "};\n"); | |
| 2381 | |
| 2382 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n"); | |
| 2383 fprintf (stream, "extern void *__deregister_frame_info (void *);\n"); | |
| 2384 | |
| 2385 fprintf (stream, "static void reg_frame () {\n"); | |
| 2386 fprintf (stream, "\tstatic struct object ob;\n"); | |
| 2387 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n"); | |
| 2388 fprintf (stream, "\t}\n"); | |
| 2389 | |
| 2390 fprintf (stream, "static void dereg_frame () {\n"); | |
| 2391 fprintf (stream, "\t__deregister_frame_info (frame_table);\n"); | |
| 2392 fprintf (stream, "\t}\n"); | |
| 2393 } | |
| 2394 | |
| 2395 fprintf (stream, "void %s() {\n", initname); | |
| 2396 if (constructors.number > 0 || frames) | |
| 2397 { | |
| 2398 fprintf (stream, "\tstatic entry_pt *ctors[] = {\n"); | |
| 2399 write_list (stream, "\t\t", constructors.first); | |
| 2400 if (frames) | |
| 2401 fprintf (stream, "\treg_frame,\n"); | |
| 2402 fprintf (stream, "\t};\n"); | |
| 2403 fprintf (stream, "\tentry_pt **p;\n"); | |
| 2404 fprintf (stream, "\tif (count++ != 0) return;\n"); | |
| 2405 fprintf (stream, "\tp = ctors + %d;\n", constructors.number + frames); | |
| 2406 fprintf (stream, "\twhile (p > ctors) (*--p)();\n"); | |
| 2407 } | |
| 2408 else | |
| 2409 fprintf (stream, "\t++count;\n"); | |
| 2410 fprintf (stream, "}\n"); | |
| 2411 write_list_with_asm (stream, "extern entry_pt ", destructors.first); | |
| 2412 fprintf (stream, "void %s() {\n", fininame); | |
| 2413 if (destructors.number > 0 || frames) | |
| 2414 { | |
| 2415 fprintf (stream, "\tstatic entry_pt *dtors[] = {\n"); | |
| 2416 write_list (stream, "\t\t", destructors.first); | |
| 2417 if (frames) | |
| 2418 fprintf (stream, "\tdereg_frame,\n"); | |
| 2419 fprintf (stream, "\t};\n"); | |
| 2420 fprintf (stream, "\tentry_pt **p;\n"); | |
| 2421 fprintf (stream, "\tif (--count != 0) return;\n"); | |
| 2422 fprintf (stream, "\tp = dtors;\n"); | |
| 2423 fprintf (stream, "\twhile (p < dtors + %d) (*p++)();\n", | |
| 2424 destructors.number + frames); | |
| 2425 } | |
| 2426 fprintf (stream, "}\n"); | |
| 2427 | |
| 2428 if (shared_obj) | |
| 2429 { | |
| 2430 COLLECT_SHARED_INIT_FUNC(stream, initname); | |
| 2431 COLLECT_SHARED_FINI_FUNC(stream, fininame); | |
| 2432 } | |
| 2433 } | |
| 2434 | |
| 2435 /* Write the constructor/destructor tables. */ | |
| 2436 | |
| 2437 #ifndef LD_INIT_SWITCH | |
| 2438 static void | |
| 2439 write_c_file_glob (FILE *stream, const char *name ATTRIBUTE_UNUSED) | |
| 2440 { | |
| 2441 /* Write the tables as C code. */ | |
| 2442 | |
| 2443 int frames = (frame_tables.number > 0); | |
| 2444 | |
| 2445 fprintf (stream, "typedef void entry_pt();\n\n"); | |
| 2446 | |
| 2447 write_list_with_asm (stream, "extern entry_pt ", constructors.first); | |
| 2448 | |
| 2449 if (frames) | |
| 2450 { | |
| 2451 write_list_with_asm (stream, "extern void *", frame_tables.first); | |
| 2452 | |
| 2453 fprintf (stream, "\tstatic void *frame_table[] = {\n"); | |
| 2454 write_list (stream, "\t\t&", frame_tables.first); | |
| 2455 fprintf (stream, "\t0\n};\n"); | |
| 2456 | |
| 2457 /* This must match what's in frame.h. */ | |
| 2458 fprintf (stream, "struct object {\n"); | |
| 2459 fprintf (stream, " void *pc_begin;\n"); | |
| 2460 fprintf (stream, " void *pc_end;\n"); | |
| 2461 fprintf (stream, " void *fde_begin;\n"); | |
| 2462 fprintf (stream, " void *fde_array;\n"); | |
| 2463 fprintf (stream, " __SIZE_TYPE__ count;\n"); | |
| 2464 fprintf (stream, " struct object *next;\n"); | |
| 2465 fprintf (stream, "};\n"); | |
| 2466 | |
| 2467 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n"); | |
| 2468 fprintf (stream, "extern void *__deregister_frame_info (void *);\n"); | |
| 2469 | |
| 2470 fprintf (stream, "static void reg_frame () {\n"); | |
| 2471 fprintf (stream, "\tstatic struct object ob;\n"); | |
| 2472 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n"); | |
| 2473 fprintf (stream, "\t}\n"); | |
| 2474 | |
| 2475 fprintf (stream, "static void dereg_frame () {\n"); | |
| 2476 fprintf (stream, "\t__deregister_frame_info (frame_table);\n"); | |
| 2477 fprintf (stream, "\t}\n"); | |
| 2478 } | |
| 2479 | |
| 2480 fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n"); | |
| 2481 fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number + frames); | |
| 2482 write_list (stream, "\t", constructors.first); | |
| 2483 if (frames) | |
| 2484 fprintf (stream, "\treg_frame,\n"); | |
| 2485 fprintf (stream, "\t0\n};\n\n"); | |
| 2486 | |
| 2487 write_list_with_asm (stream, "extern entry_pt ", destructors.first); | |
| 2488 | |
| 2489 fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n"); | |
| 2490 fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number + frames); | |
| 2491 write_list (stream, "\t", destructors.first); | |
| 2492 if (frames) | |
| 2493 fprintf (stream, "\tdereg_frame,\n"); | |
| 2494 fprintf (stream, "\t0\n};\n\n"); | |
| 2495 | |
| 2496 fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN); | |
| 2497 fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN); | |
| 2498 } | |
| 2499 #endif /* ! LD_INIT_SWITCH */ | |
| 2500 | |
| 2501 static void | |
| 2502 write_c_file (FILE *stream, const char *name) | |
| 2503 { | |
| 2504 #ifndef LD_INIT_SWITCH | |
| 2505 if (! shared_obj) | |
| 2506 write_c_file_glob (stream, name); | |
| 2507 else | |
| 2508 #endif | |
| 2509 write_c_file_stat (stream, name); | |
| 2510 } | |
| 2511 | |
| 2512 #ifdef COLLECT_EXPORT_LIST | |
| 2513 static void | |
| 2514 write_aix_file (FILE *stream, struct id *list) | |
| 2515 { | |
| 2516 for (; list; list = list->next) | |
| 2517 { | |
| 2518 fputs (list->name, stream); | |
| 2519 putc ('\n', stream); | |
| 2520 } | |
| 2521 } | |
| 2522 #endif | |
| 2523 | |
| 2524 #ifdef OBJECT_FORMAT_NONE | |
| 2525 | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2526 /* Check to make sure the file is an LTO object file. */ |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2527 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2528 static bool |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2529 maybe_lto_object_file (const char *prog_name) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2530 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2531 FILE *f; |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2532 unsigned char buf[4]; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2533 int i; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2534 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2535 static unsigned char elfmagic[4] = { 0x7f, 'E', 'L', 'F' }; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2536 static unsigned char coffmagic[2] = { 0x4c, 0x01 }; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2537 static unsigned char coffmagic_x64[2] = { 0x64, 0x86 }; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2538 static unsigned char machomagic[4][4] = { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2539 { 0xcf, 0xfa, 0xed, 0xfe }, |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2540 { 0xce, 0xfa, 0xed, 0xfe }, |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2541 { 0xfe, 0xed, 0xfa, 0xcf }, |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2542 { 0xfe, 0xed, 0xfa, 0xce } |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2543 }; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2544 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2545 f = fopen (prog_name, "rb"); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2546 if (f == NULL) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2547 return false; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2548 if (fread (buf, sizeof (buf), 1, f) != 1) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2549 buf[0] = 0; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2550 fclose (f); |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2551 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2552 if (memcmp (buf, elfmagic, sizeof (elfmagic)) == 0 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2553 || memcmp (buf, coffmagic, sizeof (coffmagic)) == 0 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2554 || memcmp (buf, coffmagic_x64, sizeof (coffmagic_x64)) == 0) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2555 return true; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2556 for (i = 0; i < 4; i++) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2557 if (memcmp (buf, machomagic[i], sizeof (machomagic[i])) == 0) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2558 return true; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2559 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2560 return false; |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2561 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2562 |
| 0 | 2563 /* Generic version to scan the name list of the loaded program for |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2564 the symbols g++ uses for static constructors and destructors. */ |
| 0 | 2565 |
| 2566 static void | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2567 scan_prog_file (const char *prog_name, scanpass which_pass, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2568 scanfilter filter) |
| 0 | 2569 { |
| 2570 void (*int_handler) (int); | |
| 2571 #ifdef SIGQUIT | |
| 2572 void (*quit_handler) (int); | |
| 2573 #endif | |
| 2574 char *real_nm_argv[4]; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2575 const char **nm_argv = CONST_CAST2 (const char **, char**, real_nm_argv); |
| 0 | 2576 int argc = 0; |
| 2577 struct pex_obj *pex; | |
| 2578 const char *errmsg; | |
| 2579 int err; | |
| 2580 char *p, buf[1024]; | |
| 2581 FILE *inf; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2582 int found_lto = 0; |
| 0 | 2583 |
| 2584 if (which_pass == PASS_SECOND) | |
| 2585 return; | |
| 2586 | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2587 /* LTO objects must be in a known format. This check prevents |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2588 us from accepting an archive containing LTO objects, which |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2589 gcc cannnot currently handle. */ |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2590 if (which_pass == PASS_LTOINFO && !maybe_lto_object_file (prog_name)) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2591 return; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2592 |
| 0 | 2593 /* If we do not have an `nm', complain. */ |
| 2594 if (nm_file_name == 0) | |
| 2595 fatal ("cannot find 'nm'"); | |
| 2596 | |
| 2597 nm_argv[argc++] = nm_file_name; | |
| 2598 if (NM_FLAGS[0] != '\0') | |
| 2599 nm_argv[argc++] = NM_FLAGS; | |
| 2600 | |
| 2601 nm_argv[argc++] = prog_name; | |
| 2602 nm_argv[argc++] = (char *) 0; | |
| 2603 | |
| 2604 /* Trace if needed. */ | |
| 2605 if (vflag) | |
| 2606 { | |
| 2607 const char **p_argv; | |
| 2608 const char *str; | |
| 2609 | |
| 2610 for (p_argv = &nm_argv[0]; (str = *p_argv) != (char *) 0; p_argv++) | |
| 2611 fprintf (stderr, " %s", str); | |
| 2612 | |
| 2613 fprintf (stderr, "\n"); | |
| 2614 } | |
| 2615 | |
| 2616 fflush (stdout); | |
| 2617 fflush (stderr); | |
| 2618 | |
| 2619 pex = pex_init (PEX_USE_PIPES, "collect2", NULL); | |
| 2620 if (pex == NULL) | |
| 2621 fatal_perror ("pex_init failed"); | |
| 2622 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2623 errmsg = pex_run (pex, 0, nm_file_name, real_nm_argv, NULL, HOST_BIT_BUCKET, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2624 &err); |
| 0 | 2625 if (errmsg != NULL) |
| 2626 { | |
| 2627 if (err != 0) | |
| 2628 { | |
| 2629 errno = err; | |
| 2630 fatal_perror (errmsg); | |
| 2631 } | |
| 2632 else | |
| 2633 fatal (errmsg); | |
| 2634 } | |
| 2635 | |
| 2636 int_handler = (void (*) (int)) signal (SIGINT, SIG_IGN); | |
| 2637 #ifdef SIGQUIT | |
| 2638 quit_handler = (void (*) (int)) signal (SIGQUIT, SIG_IGN); | |
| 2639 #endif | |
| 2640 | |
| 2641 inf = pex_read_output (pex, 0); | |
| 2642 if (inf == NULL) | |
| 2643 fatal_perror ("can't open nm output"); | |
| 2644 | |
| 2645 if (debug) | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2646 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2647 if (which_pass == PASS_LTOINFO) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2648 fprintf (stderr, "\nnm output with LTO info marker symbol.\n"); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2649 else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2650 fprintf (stderr, "\nnm output with constructors/destructors.\n"); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2651 } |
| 0 | 2652 |
| 2653 /* Read each line of nm output. */ | |
| 2654 while (fgets (buf, sizeof buf, inf) != (char *) 0) | |
| 2655 { | |
| 2656 int ch, ch2; | |
| 2657 char *name, *end; | |
| 2658 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2659 if (debug) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2660 fprintf (stderr, "\t%s\n", buf); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2661 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2662 if (which_pass == PASS_LTOINFO) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2663 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2664 if (found_lto) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2665 continue; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2666 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2667 /* Look for the LTO info marker symbol, and add filename to |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2668 the LTO objects list if found. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2669 for (p = buf; (ch = *p) != '\0' && ch != '\n'; p++) |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2670 if (ch == ' ' && p[1] == '_' && p[2] == '_' |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2671 && (strncmp (p + (p[3] == '_' ? 2 : 1), "__gnu_lto_v1", 12) == 0) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2672 && ISSPACE (p[p[3] == '_' ? 14 : 13])) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2673 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2674 add_lto_object (<o_objects, prog_name); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2675 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2676 /* We need to read all the input, so we can't just |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2677 return here. But we can avoid useless work. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2678 found_lto = 1; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2679 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2680 break; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2681 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2682 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2683 continue; |
|
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|
2684 } |
|
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|
2685 |
| 0 | 2686 /* If it contains a constructor or destructor name, add the name |
|
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|
2687 to the appropriate list unless this is a kind of symbol we're |
|
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|
2688 not supposed to even consider. */ |
| 0 | 2689 |
| 2690 for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++) | |
| 2691 if (ch == ' ' && p[1] == 'U' && p[2] == ' ') | |
| 2692 break; | |
| 2693 | |
| 2694 if (ch != '_') | |
| 2695 continue; | |
| 2696 | |
| 2697 name = p; | |
| 2698 /* Find the end of the symbol name. | |
| 2699 Do not include `|', because Encore nm can tack that on the end. */ | |
| 2700 for (end = p; (ch2 = *end) != '\0' && !ISSPACE (ch2) && ch2 != '|'; | |
| 2701 end++) | |
| 2702 continue; | |
| 2703 | |
| 2704 | |
| 2705 *end = '\0'; | |
| 2706 switch (is_ctor_dtor (name)) | |
| 2707 { | |
| 2708 case SYM_CTOR: | |
|
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diff
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|
2709 if (! (filter & SCAN_CTOR)) |
|
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|
2710 break; |
| 0 | 2711 if (which_pass != PASS_LIB) |
| 2712 add_to_list (&constructors, name); | |
| 2713 break; | |
| 2714 | |
| 2715 case SYM_DTOR: | |
|
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|
2716 if (! (filter & SCAN_DTOR)) |
|
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diff
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|
2717 break; |
| 0 | 2718 if (which_pass != PASS_LIB) |
| 2719 add_to_list (&destructors, name); | |
| 2720 break; | |
| 2721 | |
| 2722 case SYM_INIT: | |
|
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|
2723 if (! (filter & SCAN_INIT)) |
|
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|
2724 break; |
| 0 | 2725 if (which_pass != PASS_LIB) |
| 2726 fatal ("init function found in object %s", prog_name); | |
| 2727 #ifndef LD_INIT_SWITCH | |
| 2728 add_to_list (&constructors, name); | |
| 2729 #endif | |
| 2730 break; | |
| 2731 | |
| 2732 case SYM_FINI: | |
|
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|
2733 if (! (filter & SCAN_FINI)) |
|
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|
2734 break; |
| 0 | 2735 if (which_pass != PASS_LIB) |
| 2736 fatal ("fini function found in object %s", prog_name); | |
| 2737 #ifndef LD_FINI_SWITCH | |
| 2738 add_to_list (&destructors, name); | |
| 2739 #endif | |
| 2740 break; | |
| 2741 | |
| 2742 case SYM_DWEH: | |
|
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|
2743 if (! (filter & SCAN_DWEH)) |
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diff
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|
2744 break; |
| 0 | 2745 if (which_pass != PASS_LIB) |
| 2746 add_to_list (&frame_tables, name); | |
| 2747 break; | |
| 2748 | |
| 2749 default: /* not a constructor or destructor */ | |
| 2750 continue; | |
| 2751 } | |
| 2752 } | |
| 2753 | |
| 2754 if (debug) | |
| 2755 fprintf (stderr, "\n"); | |
| 2756 | |
| 2757 do_wait (nm_file_name, pex); | |
| 2758 | |
| 2759 signal (SIGINT, int_handler); | |
| 2760 #ifdef SIGQUIT | |
| 2761 signal (SIGQUIT, quit_handler); | |
| 2762 #endif | |
| 2763 } | |
| 2764 | |
| 2765 #ifdef LDD_SUFFIX | |
| 2766 | |
| 2767 /* Use the List Dynamic Dependencies program to find shared libraries that | |
| 2768 the output file depends upon and their initialization/finalization | |
| 2769 routines, if any. */ | |
| 2770 | |
| 2771 static void | |
| 2772 scan_libraries (const char *prog_name) | |
| 2773 { | |
| 2774 static struct head libraries; /* list of shared libraries found */ | |
| 2775 struct id *list; | |
| 2776 void (*int_handler) (int); | |
| 2777 #ifdef SIGQUIT | |
| 2778 void (*quit_handler) (int); | |
| 2779 #endif | |
| 2780 char *real_ldd_argv[4]; | |
|
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|
2781 const char **ldd_argv = CONST_CAST2 (const char **, char **, real_ldd_argv); |
| 0 | 2782 int argc = 0; |
| 2783 struct pex_obj *pex; | |
| 2784 const char *errmsg; | |
| 2785 int err; | |
| 2786 char buf[1024]; | |
| 2787 FILE *inf; | |
| 2788 | |
| 2789 /* If we do not have an `ldd', complain. */ | |
| 2790 if (ldd_file_name == 0) | |
| 2791 { | |
| 2792 error ("cannot find 'ldd'"); | |
| 2793 return; | |
| 2794 } | |
| 2795 | |
| 2796 ldd_argv[argc++] = ldd_file_name; | |
| 2797 ldd_argv[argc++] = prog_name; | |
| 2798 ldd_argv[argc++] = (char *) 0; | |
| 2799 | |
| 2800 /* Trace if needed. */ | |
| 2801 if (vflag) | |
| 2802 { | |
| 2803 const char **p_argv; | |
| 2804 const char *str; | |
| 2805 | |
| 2806 for (p_argv = &ldd_argv[0]; (str = *p_argv) != (char *) 0; p_argv++) | |
| 2807 fprintf (stderr, " %s", str); | |
| 2808 | |
| 2809 fprintf (stderr, "\n"); | |
| 2810 } | |
| 2811 | |
| 2812 fflush (stdout); | |
| 2813 fflush (stderr); | |
| 2814 | |
| 2815 pex = pex_init (PEX_USE_PIPES, "collect2", NULL); | |
| 2816 if (pex == NULL) | |
| 2817 fatal_perror ("pex_init failed"); | |
| 2818 | |
| 2819 errmsg = pex_run (pex, 0, ldd_file_name, real_ldd_argv, NULL, NULL, &err); | |
| 2820 if (errmsg != NULL) | |
| 2821 { | |
| 2822 if (err != 0) | |
| 2823 { | |
| 2824 errno = err; | |
| 2825 fatal_perror (errmsg); | |
| 2826 } | |
| 2827 else | |
| 2828 fatal (errmsg); | |
| 2829 } | |
| 2830 | |
| 2831 int_handler = (void (*) (int)) signal (SIGINT, SIG_IGN); | |
| 2832 #ifdef SIGQUIT | |
| 2833 quit_handler = (void (*) (int)) signal (SIGQUIT, SIG_IGN); | |
| 2834 #endif | |
| 2835 | |
| 2836 inf = pex_read_output (pex, 0); | |
| 2837 if (inf == NULL) | |
| 2838 fatal_perror ("can't open ldd output"); | |
| 2839 | |
| 2840 if (debug) | |
| 2841 notice ("\nldd output with constructors/destructors.\n"); | |
| 2842 | |
| 2843 /* Read each line of ldd output. */ | |
| 2844 while (fgets (buf, sizeof buf, inf) != (char *) 0) | |
| 2845 { | |
| 2846 int ch2; | |
| 2847 char *name, *end, *p = buf; | |
| 2848 | |
| 2849 /* Extract names of libraries and add to list. */ | |
| 2850 PARSE_LDD_OUTPUT (p); | |
| 2851 if (p == 0) | |
| 2852 continue; | |
| 2853 | |
| 2854 name = p; | |
| 2855 if (strncmp (name, "not found", sizeof ("not found") - 1) == 0) | |
| 2856 fatal ("dynamic dependency %s not found", buf); | |
| 2857 | |
| 2858 /* Find the end of the symbol name. */ | |
| 2859 for (end = p; | |
| 2860 (ch2 = *end) != '\0' && ch2 != '\n' && !ISSPACE (ch2) && ch2 != '|'; | |
| 2861 end++) | |
| 2862 continue; | |
| 2863 *end = '\0'; | |
| 2864 | |
| 2865 if (access (name, R_OK) == 0) | |
| 2866 add_to_list (&libraries, name); | |
| 2867 else | |
| 2868 fatal ("unable to open dynamic dependency '%s'", buf); | |
| 2869 | |
| 2870 if (debug) | |
| 2871 fprintf (stderr, "\t%s\n", buf); | |
| 2872 } | |
| 2873 if (debug) | |
| 2874 fprintf (stderr, "\n"); | |
| 2875 | |
| 2876 do_wait (ldd_file_name, pex); | |
| 2877 | |
| 2878 signal (SIGINT, int_handler); | |
| 2879 #ifdef SIGQUIT | |
| 2880 signal (SIGQUIT, quit_handler); | |
| 2881 #endif | |
| 2882 | |
| 2883 /* Now iterate through the library list adding their symbols to | |
| 2884 the list. */ | |
| 2885 for (list = libraries.first; list; list = list->next) | |
|
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|
2886 scan_prog_file (list->name, PASS_LIB, SCAN_ALL); |
| 0 | 2887 } |
| 2888 | |
| 2889 #endif /* LDD_SUFFIX */ | |
| 2890 | |
| 2891 #endif /* OBJECT_FORMAT_NONE */ | |
| 2892 | |
| 2893 | |
| 2894 /* | |
| 2895 * COFF specific stuff. | |
| 2896 */ | |
| 2897 | |
| 2898 #ifdef OBJECT_FORMAT_COFF | |
| 2899 | |
| 2900 #if defined (EXTENDED_COFF) | |
| 2901 | |
| 2902 # define GCC_SYMBOLS(X) (SYMHEADER(X).isymMax + SYMHEADER(X).iextMax) | |
| 2903 # define GCC_SYMENT SYMR | |
| 2904 # define GCC_OK_SYMBOL(X) ((X).st == stProc || (X).st == stGlobal) | |
| 2905 # define GCC_SYMINC(X) (1) | |
| 2906 # define GCC_SYMZERO(X) (SYMHEADER(X).isymMax) | |
| 2907 # define GCC_CHECK_HDR(X) (PSYMTAB(X) != 0) | |
| 2908 | |
| 2909 #else | |
| 2910 | |
| 2911 # define GCC_SYMBOLS(X) (HEADER(ldptr).f_nsyms) | |
| 2912 # define GCC_SYMENT SYMENT | |
| 2913 # if defined (C_WEAKEXT) | |
| 2914 # define GCC_OK_SYMBOL(X) \ | |
| 2915 (((X).n_sclass == C_EXT || (X).n_sclass == C_WEAKEXT) && \ | |
| 2916 ((X).n_scnum > N_UNDEF) && \ | |
| 2917 (aix64_flag \ | |
| 2918 || (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) \ | |
| 2919 || ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT)))) | |
| 2920 # define GCC_UNDEF_SYMBOL(X) \ | |
| 2921 (((X).n_sclass == C_EXT || (X).n_sclass == C_WEAKEXT) && \ | |
| 2922 ((X).n_scnum == N_UNDEF)) | |
| 2923 # else | |
| 2924 # define GCC_OK_SYMBOL(X) \ | |
| 2925 (((X).n_sclass == C_EXT) && \ | |
| 2926 ((X).n_scnum > N_UNDEF) && \ | |
| 2927 (aix64_flag \ | |
| 2928 || (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) \ | |
| 2929 || ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT)))) | |
| 2930 # define GCC_UNDEF_SYMBOL(X) \ | |
| 2931 (((X).n_sclass == C_EXT) && ((X).n_scnum == N_UNDEF)) | |
| 2932 # endif | |
| 2933 # define GCC_SYMINC(X) ((X).n_numaux+1) | |
| 2934 # define GCC_SYMZERO(X) 0 | |
| 2935 | |
| 2936 /* 0757 = U803XTOCMAGIC (AIX 4.3) and 0767 = U64_TOCMAGIC (AIX V5) */ | |
|
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|
2937 #if TARGET_AIX_VERSION >= 51 |
| 0 | 2938 # define GCC_CHECK_HDR(X) \ |
| 2939 ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \ | |
| 2940 || (HEADER (X).f_magic == 0767 && aix64_flag)) | |
| 2941 #else | |
| 2942 # define GCC_CHECK_HDR(X) \ | |
| 2943 ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \ | |
| 2944 || (HEADER (X).f_magic == 0757 && aix64_flag)) | |
| 2945 #endif | |
| 2946 | |
| 2947 #endif | |
| 2948 | |
| 2949 #ifdef COLLECT_EXPORT_LIST | |
| 2950 /* Array of standard AIX libraries which should not | |
| 2951 be scanned for ctors/dtors. */ | |
| 2952 static const char *const aix_std_libs[] = { | |
| 2953 "/unix", | |
| 2954 "/lib/libc.a", | |
| 2955 "/lib/libm.a", | |
| 2956 "/lib/libc_r.a", | |
| 2957 "/lib/libm_r.a", | |
| 2958 "/usr/lib/libc.a", | |
| 2959 "/usr/lib/libm.a", | |
| 2960 "/usr/lib/libc_r.a", | |
| 2961 "/usr/lib/libm_r.a", | |
| 2962 "/usr/lib/threads/libc.a", | |
| 2963 "/usr/ccs/lib/libc.a", | |
| 2964 "/usr/ccs/lib/libm.a", | |
| 2965 "/usr/ccs/lib/libc_r.a", | |
| 2966 "/usr/ccs/lib/libm_r.a", | |
| 2967 NULL | |
| 2968 }; | |
| 2969 | |
| 2970 /* This function checks the filename and returns 1 | |
| 2971 if this name matches the location of a standard AIX library. */ | |
| 2972 static int ignore_library (const char *); | |
| 2973 static int | |
| 2974 ignore_library (const char *name) | |
| 2975 { | |
|
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diff
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|
2976 const char *const *p; |
|
77e2b8dfacca
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diff
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|
2977 size_t length; |
|
77e2b8dfacca
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diff
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|
2978 |
|
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diff
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|
2979 if (target_system_root[0] != '\0') |
|
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update it from 4.4.3 to 4.5.0
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parents:
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diff
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|
2980 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
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|
2981 length = strlen (target_system_root); |
|
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diff
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|
2982 if (strncmp (name, target_system_root, length) != 0) |
|
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diff
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|
2983 return 0; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
2984 name += length; |
|
77e2b8dfacca
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diff
changeset
|
2985 } |
|
77e2b8dfacca
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diff
changeset
|
2986 for (p = &aix_std_libs[0]; *p != NULL; ++p) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
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|
2987 if (strcmp (name, *p) == 0) |
|
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diff
changeset
|
2988 return 1; |
| 0 | 2989 return 0; |
| 2990 } | |
| 2991 #endif /* COLLECT_EXPORT_LIST */ | |
| 2992 | |
| 2993 #if defined (HAVE_DECL_LDGETNAME) && !HAVE_DECL_LDGETNAME | |
| 2994 extern char *ldgetname (LDFILE *, GCC_SYMENT *); | |
| 2995 #endif | |
| 2996 | |
| 2997 /* COFF version to scan the name list of the loaded program for | |
|
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|
2998 the symbols g++ uses for static constructors and destructors. */ |
| 0 | 2999 |
| 3000 static void | |
|
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diff
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|
3001 scan_prog_file (const char *prog_name, scanpass which_pass, |
|
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|
3002 scanfilter filter) |
| 0 | 3003 { |
| 3004 LDFILE *ldptr = NULL; | |
| 3005 int sym_index, sym_count; | |
| 3006 int is_shared = 0; | |
| 3007 | |
| 3008 if (which_pass != PASS_FIRST && which_pass != PASS_OBJ) | |
| 3009 return; | |
| 3010 | |
| 3011 #ifdef COLLECT_EXPORT_LIST | |
| 3012 /* We do not need scanning for some standard C libraries. */ | |
| 3013 if (which_pass == PASS_FIRST && ignore_library (prog_name)) | |
| 3014 return; | |
| 3015 | |
| 3016 /* On AIX we have a loop, because there is not much difference | |
| 3017 between an object and an archive. This trick allows us to | |
| 3018 eliminate scan_libraries() function. */ | |
| 3019 do | |
| 3020 { | |
| 3021 #endif | |
| 3022 /* Some platforms (e.g. OSF4) declare ldopen as taking a | |
| 3023 non-const char * filename parameter, even though it will not | |
| 3024 modify that string. So we must cast away const-ness here, | |
| 3025 using CONST_CAST to prevent complaints from -Wcast-qual. */ | |
| 3026 if ((ldptr = ldopen (CONST_CAST (char *, prog_name), ldptr)) != NULL) | |
| 3027 { | |
| 3028 if (! MY_ISCOFF (HEADER (ldptr).f_magic)) | |
| 3029 fatal ("%s: not a COFF file", prog_name); | |
| 3030 | |
| 3031 if (GCC_CHECK_HDR (ldptr)) | |
| 3032 { | |
| 3033 sym_count = GCC_SYMBOLS (ldptr); | |
| 3034 sym_index = GCC_SYMZERO (ldptr); | |
| 3035 | |
| 3036 #ifdef COLLECT_EXPORT_LIST | |
| 3037 /* Is current archive member a shared object? */ | |
| 3038 is_shared = HEADER (ldptr).f_flags & F_SHROBJ; | |
| 3039 #endif | |
| 3040 | |
| 3041 while (sym_index < sym_count) | |
| 3042 { | |
| 3043 GCC_SYMENT symbol; | |
| 3044 | |
| 3045 if (ldtbread (ldptr, sym_index, &symbol) <= 0) | |
| 3046 break; | |
| 3047 sym_index += GCC_SYMINC (symbol); | |
| 3048 | |
| 3049 if (GCC_OK_SYMBOL (symbol)) | |
| 3050 { | |
| 3051 char *name; | |
| 3052 | |
| 3053 if ((name = ldgetname (ldptr, &symbol)) == NULL) | |
| 3054 continue; /* Should never happen. */ | |
| 3055 | |
| 3056 #ifdef XCOFF_DEBUGGING_INFO | |
| 3057 /* All AIX function names have a duplicate entry | |
| 3058 beginning with a dot. */ | |
| 3059 if (*name == '.') | |
| 3060 ++name; | |
| 3061 #endif | |
| 3062 | |
| 3063 switch (is_ctor_dtor (name)) | |
| 3064 { | |
| 3065 case SYM_CTOR: | |
|
55
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diff
changeset
|
3066 if (! (filter & SCAN_CTOR)) |
|
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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0
diff
changeset
|
3067 break; |
| 0 | 3068 if (! is_shared) |
| 3069 add_to_list (&constructors, name); | |
| 3070 #if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH) | |
| 3071 if (which_pass == PASS_OBJ) | |
| 3072 add_to_list (&exports, name); | |
| 3073 #endif | |
| 3074 break; | |
| 3075 | |
| 3076 case SYM_DTOR: | |
|
55
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update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
3077 if (! (filter & SCAN_DTOR)) |
|
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update it from 4.4.3 to 4.5.0
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parents:
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diff
changeset
|
3078 break; |
| 0 | 3079 if (! is_shared) |
| 3080 add_to_list (&destructors, name); | |
| 3081 #if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH) | |
| 3082 if (which_pass == PASS_OBJ) | |
| 3083 add_to_list (&exports, name); | |
| 3084 #endif | |
| 3085 break; | |
| 3086 | |
| 3087 #ifdef COLLECT_EXPORT_LIST | |
| 3088 case SYM_INIT: | |
|
55
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diff
changeset
|
3089 if (! (filter & SCAN_INIT)) |
|
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diff
changeset
|
3090 break; |
| 0 | 3091 #ifndef LD_INIT_SWITCH |
| 3092 if (is_shared) | |
| 3093 add_to_list (&constructors, name); | |
| 3094 #endif | |
| 3095 break; | |
| 3096 | |
| 3097 case SYM_FINI: | |
|
55
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diff
changeset
|
3098 if (! (filter & SCAN_FINI)) |
|
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diff
changeset
|
3099 break; |
| 0 | 3100 #ifndef LD_INIT_SWITCH |
| 3101 if (is_shared) | |
| 3102 add_to_list (&destructors, name); | |
| 3103 #endif | |
| 3104 break; | |
| 3105 #endif | |
| 3106 | |
| 3107 case SYM_DWEH: | |
|
55
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diff
changeset
|
3108 if (! (filter & SCAN_DWEH)) |
|
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diff
changeset
|
3109 break; |
| 0 | 3110 if (! is_shared) |
| 3111 add_to_list (&frame_tables, name); | |
| 3112 #if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH) | |
| 3113 if (which_pass == PASS_OBJ) | |
| 3114 add_to_list (&exports, name); | |
| 3115 #endif | |
| 3116 break; | |
| 3117 | |
| 3118 default: /* not a constructor or destructor */ | |
| 3119 #ifdef COLLECT_EXPORT_LIST | |
| 3120 /* Explicitly export all global symbols when | |
| 3121 building a shared object on AIX, but do not | |
| 3122 re-export symbols from another shared object | |
| 3123 and do not export symbols if the user | |
| 3124 provides an explicit export list. */ | |
| 3125 if (shared_obj && !is_shared | |
| 3126 && which_pass == PASS_OBJ && !export_flag) | |
| 3127 add_to_list (&exports, name); | |
| 3128 #endif | |
| 3129 continue; | |
| 3130 } | |
| 3131 | |
| 3132 if (debug) | |
| 3133 #if !defined(EXTENDED_COFF) | |
| 3134 fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n", | |
| 3135 symbol.n_scnum, symbol.n_sclass, | |
| 3136 (symbol.n_type ? "0" : ""), symbol.n_type, | |
| 3137 name); | |
| 3138 #else | |
| 3139 fprintf (stderr, | |
| 3140 "\tiss = %5d, value = %5ld, index = %5d, name = %s\n", | |
| 3141 symbol.iss, (long) symbol.value, symbol.index, name); | |
| 3142 #endif | |
| 3143 } | |
| 3144 } | |
| 3145 } | |
| 3146 #ifdef COLLECT_EXPORT_LIST | |
| 3147 else | |
| 3148 { | |
| 3149 /* If archive contains both 32-bit and 64-bit objects, | |
| 3150 we want to skip objects in other mode so mismatch normal. */ | |
| 3151 if (debug) | |
| 3152 fprintf (stderr, "%s : magic=%o aix64=%d mismatch\n", | |
| 3153 prog_name, HEADER (ldptr).f_magic, aix64_flag); | |
| 3154 } | |
| 3155 #endif | |
| 3156 } | |
| 3157 else | |
| 3158 { | |
| 3159 fatal ("%s: cannot open as COFF file", prog_name); | |
| 3160 } | |
| 3161 #ifdef COLLECT_EXPORT_LIST | |
| 3162 /* On AIX loop continues while there are more members in archive. */ | |
| 3163 } | |
| 3164 while (ldclose (ldptr) == FAILURE); | |
| 3165 #else | |
| 3166 /* Otherwise we simply close ldptr. */ | |
| 3167 (void) ldclose(ldptr); | |
| 3168 #endif | |
| 3169 } | |
| 3170 #endif /* OBJECT_FORMAT_COFF */ | |
| 3171 | |
| 3172 #ifdef COLLECT_EXPORT_LIST | |
| 3173 /* Given a library name without "lib" prefix, this function | |
| 3174 returns a full library name including a path. */ | |
| 3175 static char * | |
| 3176 resolve_lib_name (const char *name) | |
| 3177 { | |
| 3178 char *lib_buf; | |
| 3179 int i, j, l = 0; | |
| 3180 /* Library extensions for AIX dynamic linking. */ | |
| 3181 const char * const libexts[2] = {"a", "so"}; | |
| 3182 | |
| 3183 for (i = 0; libpaths[i]; i++) | |
| 3184 if (libpaths[i]->max_len > l) | |
| 3185 l = libpaths[i]->max_len; | |
| 3186 | |
| 3187 lib_buf = XNEWVEC (char, l + strlen(name) + 10); | |
| 3188 | |
| 3189 for (i = 0; libpaths[i]; i++) | |
| 3190 { | |
| 3191 struct prefix_list *list = libpaths[i]->plist; | |
| 3192 for (; list; list = list->next) | |
| 3193 { | |
| 3194 /* The following lines are needed because path_prefix list | |
| 3195 may contain directories both with trailing '/' and | |
| 3196 without it. */ | |
| 3197 const char *p = ""; | |
| 3198 if (list->prefix[strlen(list->prefix)-1] != '/') | |
| 3199 p = "/"; | |
| 3200 for (j = 0; j < 2; j++) | |
| 3201 { | |
| 3202 sprintf (lib_buf, "%s%slib%s.%s", | |
| 3203 list->prefix, p, name, | |
| 3204 libexts[(j + aixrtl_flag) % 2]); | |
| 3205 if (debug) fprintf (stderr, "searching for: %s\n", lib_buf); | |
| 3206 if (file_exists (lib_buf)) | |
| 3207 { | |
| 3208 if (debug) fprintf (stderr, "found: %s\n", lib_buf); | |
| 3209 return (lib_buf); | |
| 3210 } | |
| 3211 } | |
| 3212 } | |
| 3213 } | |
| 3214 if (debug) | |
| 3215 fprintf (stderr, "not found\n"); | |
| 3216 else | |
| 3217 fatal ("library lib%s not found", name); | |
| 3218 return (NULL); | |
| 3219 } | |
| 3220 #endif /* COLLECT_EXPORT_LIST */ | |
|
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|
3221 |
|
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|
3222 #ifdef COLLECT_RUN_DSYMUTIL |
|
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|
3223 static int flag_dsym = false; |
|
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|
3224 static int flag_idsym = false; |
|
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|
3225 |
|
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|
3226 static void |
|
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|
3227 process_args (int *argcp, char **argv) { |
|
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|
3228 int i, j; |
|
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|
3229 int argc = *argcp; |
|
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|
3230 for (i=0; i<argc; ++i) |
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|
3231 { |
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3232 if (strcmp (argv[i], "-dsym") == 0) |
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|
3233 { |
|
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|
3234 flag_dsym = true; |
|
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|
3235 /* Remove the flag, as we handle all processing for it. */ |
|
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|
3236 j = i; |
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|
3237 do |
|
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|
3238 argv[j] = argv[j+1]; |
|
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|
3239 while (++j < argc); |
|
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|
3240 --i; |
|
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|
3241 argc = --(*argcp); |
|
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|
3242 } |
|
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|
3243 else if (strcmp (argv[i], "-idsym") == 0) |
|
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|
3244 { |
|
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|
3245 flag_idsym = true; |
|
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|
3246 /* Remove the flag, as we handle all processing for it. */ |
|
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|
3247 j = i; |
|
f6334be47118
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|
3248 do |
|
f6334be47118
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|
3249 argv[j] = argv[j+1]; |
|
f6334be47118
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|
3250 while (++j < argc); |
|
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|
3251 --i; |
|
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|
3252 argc = --(*argcp); |
|
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|
3253 } |
|
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|
3254 } |
|
f6334be47118
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|
3255 } |
|
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|
3256 |
|
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|
3257 static void |
|
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|
3258 do_dsymutil (const char *output_file) { |
|
f6334be47118
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|
3259 const char *dsymutil = DSYMUTIL + 1; |
|
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|
3260 struct pex_obj *pex; |
|
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|
3261 char **real_argv = XCNEWVEC (char *, 3); |
|
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|
3262 const char ** argv = CONST_CAST2 (const char **, char **, |
|
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|
3263 real_argv); |
|
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|
3264 |
|
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|
3265 argv[0] = dsymutil; |
|
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|
3266 argv[1] = output_file; |
|
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|
3267 argv[2] = (char *) 0; |
|
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|
3268 |
|
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|
3269 pex = collect_execute (dsymutil, real_argv, NULL, NULL, PEX_LAST | PEX_SEARCH); |
|
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|
3270 do_wait (dsymutil, pex); |
|
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|
3271 } |
|
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|
3272 |
|
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|
3273 static void |
|
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|
3274 post_ld_pass (bool temp_file) { |
|
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|
3275 if (!(temp_file && flag_idsym) && !flag_dsym) |
|
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|
3276 return; |
|
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|
3277 |
|
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|
3278 do_dsymutil (output_file); |
|
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|
3279 } |
|
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|
3280 #else |
|
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|
3281 static void |
|
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|
3282 process_args (int *argcp ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) { } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
3283 static void post_ld_pass (bool temp_file ATTRIBUTE_UNUSED) { } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
3284 #endif |