Mercurial > hg > CbC > CbC_gcc
annotate gcc/collect2.c @ 63:b7f97abdc517 gcc-4.6-20100522
update gcc from gcc-4.5.0 to gcc-4.6
| author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 24 May 2010 12:47:05 +0900 |
| parents | 77e2b8dfacca |
| children | f6334be47118 |
| 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 #include <signal.h> | |
| 34 #if ! defined( SIGCHLD ) && defined( SIGCLD ) | |
| 35 # define SIGCHLD SIGCLD | |
| 36 #endif | |
| 37 | |
|
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38 /* TARGET_64BIT may be defined to use driver specific functionality. */ |
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39 #undef TARGET_64BIT |
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40 #define TARGET_64BIT TARGET_64BIT_DEFAULT |
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41 |
| 0 | 42 #ifndef LIBRARY_PATH_ENV |
| 43 #define LIBRARY_PATH_ENV "LIBRARY_PATH" | |
| 44 #endif | |
| 45 | |
| 46 #define COLLECT | |
| 47 | |
| 48 #include "collect2.h" | |
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49 #include "collect2-aix.h" |
| 0 | 50 #include "demangle.h" |
| 51 #include "obstack.h" | |
| 52 #include "intl.h" | |
| 53 #include "version.h" | |
| 54 | |
| 55 /* On certain systems, we have code that works by scanning the object file | |
| 56 directly. But this code uses system-specific header files and library | |
| 57 functions, so turn it off in a cross-compiler. Likewise, the names of | |
| 58 the utilities are not correct for a cross-compiler; we have to hope that | |
| 59 cross-versions are in the proper directories. */ | |
| 60 | |
| 61 #ifdef CROSS_DIRECTORY_STRUCTURE | |
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62 #ifndef CROSS_AIX_SUPPORT |
| 0 | 63 #undef OBJECT_FORMAT_COFF |
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64 #endif |
| 0 | 65 #undef MD_EXEC_PREFIX |
| 66 #undef REAL_LD_FILE_NAME | |
| 67 #undef REAL_NM_FILE_NAME | |
| 68 #undef REAL_STRIP_FILE_NAME | |
| 69 #endif | |
| 70 | |
| 71 /* If we cannot use a special method, use the ordinary one: | |
| 72 run nm to find what symbols are present. | |
| 73 In a cross-compiler, this means you need a cross nm, | |
| 74 but that is not quite as unpleasant as special headers. */ | |
| 75 | |
| 76 #if !defined (OBJECT_FORMAT_COFF) | |
| 77 #define OBJECT_FORMAT_NONE | |
| 78 #endif | |
| 79 | |
| 80 #ifdef OBJECT_FORMAT_COFF | |
| 81 | |
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82 #ifndef CROSS_DIRECTORY_STRUCTURE |
| 0 | 83 #include <a.out.h> |
| 84 #include <ar.h> | |
| 85 | |
| 86 #ifdef UMAX | |
| 87 #include <sgs.h> | |
| 88 #endif | |
| 89 | |
| 90 /* Many versions of ldfcn.h define these. */ | |
| 91 #ifdef FREAD | |
| 92 #undef FREAD | |
| 93 #undef FWRITE | |
| 94 #endif | |
| 95 | |
| 96 #include <ldfcn.h> | |
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97 #endif |
| 0 | 98 |
| 99 /* Some systems have an ISCOFF macro, but others do not. In some cases | |
| 100 the macro may be wrong. MY_ISCOFF is defined in tm.h files for machines | |
| 101 that either do not have an ISCOFF macro in /usr/include or for those | |
| 102 where it is wrong. */ | |
| 103 | |
| 104 #ifndef MY_ISCOFF | |
| 105 #define MY_ISCOFF(X) ISCOFF (X) | |
| 106 #endif | |
| 107 | |
| 108 #endif /* OBJECT_FORMAT_COFF */ | |
| 109 | |
| 110 #ifdef OBJECT_FORMAT_NONE | |
| 111 | |
| 112 /* Default flags to pass to nm. */ | |
| 113 #ifndef NM_FLAGS | |
| 114 #define NM_FLAGS "-n" | |
| 115 #endif | |
| 116 | |
| 117 #endif /* OBJECT_FORMAT_NONE */ | |
| 118 | |
| 119 /* Some systems use __main in a way incompatible with its use in gcc, in these | |
| 120 cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to | |
| 121 give the same symbol without quotes for an alternative entry point. */ | |
| 122 #ifndef NAME__MAIN | |
| 123 #define NAME__MAIN "__main" | |
| 124 #endif | |
| 125 | |
| 126 /* This must match tree.h. */ | |
| 127 #define DEFAULT_INIT_PRIORITY 65535 | |
| 128 | |
| 129 #ifndef COLLECT_SHARED_INIT_FUNC | |
| 130 #define COLLECT_SHARED_INIT_FUNC(STREAM, FUNC) \ | |
| 131 fprintf ((STREAM), "void _GLOBAL__DI() {\n\t%s();\n}\n", (FUNC)) | |
| 132 #endif | |
| 133 #ifndef COLLECT_SHARED_FINI_FUNC | |
| 134 #define COLLECT_SHARED_FINI_FUNC(STREAM, FUNC) \ | |
| 135 fprintf ((STREAM), "void _GLOBAL__DD() {\n\t%s();\n}\n", (FUNC)) | |
| 136 #endif | |
| 137 | |
| 138 #ifdef LDD_SUFFIX | |
| 139 #define SCAN_LIBRARIES | |
| 140 #endif | |
| 141 | |
| 142 #ifndef SHLIB_SUFFIX | |
| 143 #define SHLIB_SUFFIX ".so" | |
| 144 #endif | |
| 145 | |
| 146 #ifdef USE_COLLECT2 | |
| 147 int do_collecting = 1; | |
| 148 #else | |
| 149 int do_collecting = 0; | |
| 150 #endif | |
| 151 | |
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152 /* Cook up an always defined indication of whether we proceed the |
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153 "EXPORT_LIST" way. */ |
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154 |
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155 #ifdef COLLECT_EXPORT_LIST |
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156 #define DO_COLLECT_EXPORT_LIST 1 |
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157 #else |
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158 #define DO_COLLECT_EXPORT_LIST 0 |
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159 #endif |
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160 |
| 0 | 161 /* Nonzero if we should suppress the automatic demangling of identifiers |
| 162 in linker error messages. Set from COLLECT_NO_DEMANGLE. */ | |
| 163 int no_demangle; | |
| 164 | |
| 165 /* Linked lists of constructor and destructor names. */ | |
| 166 | |
| 167 struct id | |
| 168 { | |
| 169 struct id *next; | |
| 170 int sequence; | |
| 171 char name[1]; | |
| 172 }; | |
| 173 | |
| 174 struct head | |
| 175 { | |
| 176 struct id *first; | |
| 177 struct id *last; | |
| 178 int number; | |
| 179 }; | |
| 180 | |
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181 bool vflag; /* true if -v or --version */ |
| 0 | 182 static int rflag; /* true if -r */ |
| 183 static int strip_flag; /* true if -s */ | |
| 184 static const char *demangle_flag; | |
| 185 #ifdef COLLECT_EXPORT_LIST | |
| 186 static int export_flag; /* true if -bE */ | |
| 187 static int aix64_flag; /* true if -b64 */ | |
| 188 static int aixrtl_flag; /* true if -brtl */ | |
| 189 #endif | |
| 190 | |
|
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191 enum lto_mode_d { |
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192 LTO_MODE_NONE, /* Not doing LTO. */ |
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193 LTO_MODE_LTO, /* Normal LTO. */ |
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194 LTO_MODE_WHOPR /* WHOPR. */ |
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195 }; |
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196 |
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197 /* Current LTO mode. */ |
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198 static enum lto_mode_d lto_mode = LTO_MODE_NONE; |
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199 |
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200 bool debug; /* true if -debug */ |
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201 bool helpflag; /* true if --help */ |
| 0 | 202 |
| 203 static int shared_obj; /* true if -shared */ | |
| 204 | |
| 205 static const char *c_file; /* <xxx>.c for constructor/destructor list. */ | |
| 206 static const char *o_file; /* <xxx>.o for constructor/destructor list. */ | |
| 207 #ifdef COLLECT_EXPORT_LIST | |
| 208 static const char *export_file; /* <xxx>.x for AIX export list. */ | |
| 209 #endif | |
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210 static char **lto_o_files; /* Output files for LTO. */ |
| 0 | 211 const char *ldout; /* File for ld stdout. */ |
| 212 const char *lderrout; /* File for ld stderr. */ | |
| 213 static const char *output_file; /* Output file for ld. */ | |
| 214 static const char *nm_file_name; /* pathname of nm */ | |
| 215 #ifdef LDD_SUFFIX | |
| 216 static const char *ldd_file_name; /* pathname of ldd (or equivalent) */ | |
| 217 #endif | |
| 218 static const char *strip_file_name; /* pathname of strip */ | |
| 219 const char *c_file_name; /* pathname of gcc */ | |
| 220 static char *initname, *fininame; /* names of init and fini funcs */ | |
| 221 | |
| 222 static struct head constructors; /* list of constructors found */ | |
| 223 static struct head destructors; /* list of destructors found */ | |
| 224 #ifdef COLLECT_EXPORT_LIST | |
| 225 static struct head exports; /* list of exported symbols */ | |
| 226 #endif | |
| 227 static struct head frame_tables; /* list of frame unwind info tables */ | |
| 228 | |
| 229 static bool at_file_supplied; /* Whether to use @file arguments */ | |
| 230 static char *response_file; /* Name of any current response file */ | |
| 231 | |
| 232 struct obstack temporary_obstack; | |
| 233 char * temporary_firstobj; | |
| 234 | |
|
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235 /* A string that must be prepended to a target OS path in order to find |
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236 it on the host system. */ |
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237 #ifdef TARGET_SYSTEM_ROOT |
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238 static const char *target_system_root = TARGET_SYSTEM_ROOT; |
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239 #else |
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240 static const char *target_system_root = ""; |
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241 #endif |
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242 |
| 0 | 243 /* Structure to hold all the directories in which to search for files to |
| 244 execute. */ | |
| 245 | |
| 246 struct prefix_list | |
| 247 { | |
| 248 const char *prefix; /* String to prepend to the path. */ | |
| 249 struct prefix_list *next; /* Next in linked list. */ | |
| 250 }; | |
| 251 | |
| 252 struct path_prefix | |
| 253 { | |
| 254 struct prefix_list *plist; /* List of prefixes to try */ | |
| 255 int max_len; /* Max length of a prefix in PLIST */ | |
| 256 const char *name; /* Name of this list (used in config stuff) */ | |
| 257 }; | |
| 258 | |
| 259 #ifdef COLLECT_EXPORT_LIST | |
| 260 /* Lists to keep libraries to be scanned for global constructors/destructors. */ | |
| 261 static struct head libs; /* list of libraries */ | |
| 262 static struct path_prefix cmdline_lib_dirs; /* directories specified with -L */ | |
| 263 static struct path_prefix libpath_lib_dirs; /* directories in LIBPATH */ | |
| 264 static struct path_prefix *libpaths[3] = {&cmdline_lib_dirs, | |
| 265 &libpath_lib_dirs, NULL}; | |
| 266 #endif | |
| 267 | |
|
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268 /* List of names of object files containing LTO information. |
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269 These are a subset of the object file names appearing on the |
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270 command line, and must be identical, in the sense of pointer |
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271 equality, with the names passed to maybe_run_lto_and_relink(). */ |
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272 |
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273 struct lto_object |
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274 { |
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275 const char *name; /* Name of object file. */ |
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276 struct lto_object *next; /* Next in linked list. */ |
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277 }; |
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278 |
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279 struct lto_object_list |
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280 { |
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281 struct lto_object *first; /* First list element. */ |
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282 struct lto_object *last; /* Last list element. */ |
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283 }; |
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284 |
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285 static struct lto_object_list lto_objects; |
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286 |
| 0 | 287 /* Special kinds of symbols that a name may denote. */ |
| 288 | |
| 289 typedef enum { | |
| 290 SYM_REGULAR = 0, /* nothing special */ | |
| 291 | |
| 292 SYM_CTOR = 1, /* constructor */ | |
| 293 SYM_DTOR = 2, /* destructor */ | |
| 294 SYM_INIT = 3, /* shared object routine that calls all the ctors */ | |
| 295 SYM_FINI = 4, /* shared object routine that calls all the dtors */ | |
| 296 SYM_DWEH = 5 /* DWARF exception handling table */ | |
| 297 } symkind; | |
| 298 | |
| 299 static symkind is_ctor_dtor (const char *); | |
| 300 | |
| 301 static void handler (int); | |
| 302 static char *find_a_file (struct path_prefix *, const char *); | |
| 303 static void add_prefix (struct path_prefix *, const char *); | |
| 304 static void prefix_from_env (const char *, struct path_prefix *); | |
| 305 static void prefix_from_string (const char *, struct path_prefix *); | |
| 306 static void do_wait (const char *, struct pex_obj *); | |
| 307 static void fork_execute (const char *, char **); | |
| 308 static void maybe_unlink (const char *); | |
|
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309 static void maybe_unlink_list (char **); |
| 0 | 310 static void add_to_list (struct head *, const char *); |
| 311 static int extract_init_priority (const char *); | |
| 312 static void sort_ids (struct head *); | |
| 313 static void write_list (FILE *, const char *, struct id *); | |
| 314 #ifdef COLLECT_EXPORT_LIST | |
| 315 static void dump_list (FILE *, const char *, struct id *); | |
| 316 #endif | |
| 317 #if 0 | |
| 318 static void dump_prefix_list (FILE *, const char *, struct prefix_list *); | |
| 319 #endif | |
| 320 static void write_list_with_asm (FILE *, const char *, struct id *); | |
| 321 static void write_c_file (FILE *, const char *); | |
| 322 static void write_c_file_stat (FILE *, const char *); | |
| 323 #ifndef LD_INIT_SWITCH | |
| 324 static void write_c_file_glob (FILE *, const char *); | |
| 325 #endif | |
| 326 #ifdef SCAN_LIBRARIES | |
| 327 static void scan_libraries (const char *); | |
| 328 #endif | |
| 329 #if LINK_ELIMINATE_DUPLICATE_LDIRECTORIES | |
| 330 static int is_in_args (const char *, const char **, const char **); | |
| 331 #endif | |
| 332 #ifdef COLLECT_EXPORT_LIST | |
| 333 #if 0 | |
| 334 static int is_in_list (const char *, struct id *); | |
| 335 #endif | |
| 336 static void write_aix_file (FILE *, struct id *); | |
| 337 static char *resolve_lib_name (const char *); | |
| 338 #endif | |
| 339 static char *extract_string (const char **); | |
|
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340 |
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341 /* Enumerations describing which pass this is for scanning the |
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342 program file ... */ |
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343 |
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344 typedef enum { |
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345 PASS_FIRST, /* without constructors */ |
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346 PASS_OBJ, /* individual objects */ |
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347 PASS_LIB, /* looking for shared libraries */ |
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348 PASS_SECOND, /* with constructors linked in */ |
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349 PASS_LTOINFO /* looking for objects with LTO info */ |
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350 } scanpass; |
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351 |
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352 /* ... and which kinds of symbols are to be considered. */ |
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353 |
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354 enum scanfilter_masks { |
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355 SCAN_NOTHING = 0, |
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356 |
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357 SCAN_CTOR = 1 << SYM_CTOR, |
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358 SCAN_DTOR = 1 << SYM_DTOR, |
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359 SCAN_INIT = 1 << SYM_INIT, |
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360 SCAN_FINI = 1 << SYM_FINI, |
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361 SCAN_DWEH = 1 << SYM_DWEH, |
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362 SCAN_ALL = ~0 |
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363 }; |
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364 |
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365 /* This type is used for parameters and variables which hold |
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366 combinations of the flags in enum scanfilter_masks. */ |
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367 typedef int scanfilter; |
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368 |
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369 /* Scan the name list of the loaded program for the symbols g++ uses for |
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370 static constructors and destructors. |
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371 |
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372 The SCANPASS argument tells which collect processing pass this is for and |
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373 the SCANFILTER argument tells which kinds of symbols to consider in this |
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374 pass. Symbols of a special kind not in the filter mask are considered as |
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375 regular ones. |
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376 |
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377 The constructor table begins at __CTOR_LIST__ and contains a count of the |
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378 number of pointers (or -1 if the constructors are built in a separate |
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379 section by the linker), followed by the pointers to the constructor |
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380 functions, terminated with a null pointer. The destructor table has the |
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381 same format, and begins at __DTOR_LIST__. */ |
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382 |
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383 static void scan_prog_file (const char *, scanpass, scanfilter); |
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384 |
| 0 | 385 |
| 386 /* Delete tempfiles and exit function. */ | |
| 387 | |
| 388 void | |
| 389 collect_exit (int status) | |
| 390 { | |
| 391 if (c_file != 0 && c_file[0]) | |
| 392 maybe_unlink (c_file); | |
| 393 | |
| 394 if (o_file != 0 && o_file[0]) | |
| 395 maybe_unlink (o_file); | |
| 396 | |
| 397 #ifdef COLLECT_EXPORT_LIST | |
| 398 if (export_file != 0 && export_file[0]) | |
| 399 maybe_unlink (export_file); | |
| 400 #endif | |
| 401 | |
|
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402 if (lto_o_files) |
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403 maybe_unlink_list (lto_o_files); |
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404 |
| 0 | 405 if (ldout != 0 && ldout[0]) |
| 406 { | |
| 407 dump_file (ldout, stdout); | |
| 408 maybe_unlink (ldout); | |
| 409 } | |
| 410 | |
| 411 if (lderrout != 0 && lderrout[0]) | |
| 412 { | |
| 413 dump_file (lderrout, stderr); | |
| 414 maybe_unlink (lderrout); | |
| 415 } | |
| 416 | |
| 417 if (status != 0 && output_file != 0 && output_file[0]) | |
| 418 maybe_unlink (output_file); | |
| 419 | |
| 420 if (response_file) | |
| 421 maybe_unlink (response_file); | |
| 422 | |
| 423 exit (status); | |
| 424 } | |
| 425 | |
| 426 | |
| 427 /* Notify user of a non-error. */ | |
| 428 void | |
| 429 notice (const char *cmsgid, ...) | |
| 430 { | |
| 431 va_list ap; | |
| 432 | |
| 433 va_start (ap, cmsgid); | |
| 434 vfprintf (stderr, _(cmsgid), ap); | |
| 435 va_end (ap); | |
| 436 } | |
| 437 | |
|
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438 /* Notify user of a non-error, without translating the format string. */ |
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439 void |
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440 notice_translated (const char *cmsgid, ...) |
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441 { |
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442 va_list ap; |
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443 |
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444 va_start (ap, cmsgid); |
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445 vfprintf (stderr, cmsgid, ap); |
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446 va_end (ap); |
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447 } |
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448 |
| 0 | 449 /* Die when sys call fails. */ |
| 450 | |
| 451 void | |
| 452 fatal_perror (const char * cmsgid, ...) | |
| 453 { | |
| 454 int e = errno; | |
| 455 va_list ap; | |
| 456 | |
| 457 va_start (ap, cmsgid); | |
| 458 fprintf (stderr, "collect2: "); | |
| 459 vfprintf (stderr, _(cmsgid), ap); | |
| 460 fprintf (stderr, ": %s\n", xstrerror (e)); | |
| 461 va_end (ap); | |
| 462 | |
| 463 collect_exit (FATAL_EXIT_CODE); | |
| 464 } | |
| 465 | |
| 466 /* Just die. */ | |
| 467 | |
| 468 void | |
| 469 fatal (const char * cmsgid, ...) | |
| 470 { | |
| 471 va_list ap; | |
| 472 | |
| 473 va_start (ap, cmsgid); | |
| 474 fprintf (stderr, "collect2: "); | |
| 475 vfprintf (stderr, _(cmsgid), ap); | |
| 476 fprintf (stderr, "\n"); | |
| 477 va_end (ap); | |
| 478 | |
| 479 collect_exit (FATAL_EXIT_CODE); | |
| 480 } | |
| 481 | |
| 482 /* Write error message. */ | |
| 483 | |
| 484 void | |
| 485 error (const char * gmsgid, ...) | |
| 486 { | |
| 487 va_list ap; | |
| 488 | |
| 489 va_start (ap, gmsgid); | |
| 490 fprintf (stderr, "collect2: "); | |
| 491 vfprintf (stderr, _(gmsgid), ap); | |
| 492 fprintf (stderr, "\n"); | |
| 493 va_end(ap); | |
| 494 } | |
| 495 | |
| 496 /* In case obstack is linked in, and abort is defined to fancy_abort, | |
| 497 provide a default entry. */ | |
| 498 | |
| 499 void | |
| 500 fancy_abort (const char *file, int line, const char *func) | |
| 501 { | |
| 502 fatal ("internal gcc abort in %s, at %s:%d", func, file, line); | |
| 503 } | |
| 504 | |
| 505 static void | |
| 506 handler (int signo) | |
| 507 { | |
| 508 if (c_file != 0 && c_file[0]) | |
| 509 maybe_unlink (c_file); | |
| 510 | |
| 511 if (o_file != 0 && o_file[0]) | |
| 512 maybe_unlink (o_file); | |
| 513 | |
| 514 if (ldout != 0 && ldout[0]) | |
| 515 maybe_unlink (ldout); | |
| 516 | |
| 517 if (lderrout != 0 && lderrout[0]) | |
| 518 maybe_unlink (lderrout); | |
| 519 | |
| 520 #ifdef COLLECT_EXPORT_LIST | |
| 521 if (export_file != 0 && export_file[0]) | |
| 522 maybe_unlink (export_file); | |
| 523 #endif | |
| 524 | |
|
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525 if (lto_o_files) |
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526 maybe_unlink_list (lto_o_files); |
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527 |
| 0 | 528 if (response_file) |
| 529 maybe_unlink (response_file); | |
| 530 | |
| 531 signal (signo, SIG_DFL); | |
| 532 raise (signo); | |
| 533 } | |
| 534 | |
| 535 | |
| 536 int | |
| 537 file_exists (const char *name) | |
| 538 { | |
| 539 return access (name, R_OK) == 0; | |
| 540 } | |
| 541 | |
| 542 /* Parse a reasonable subset of shell quoting syntax. */ | |
| 543 | |
| 544 static char * | |
| 545 extract_string (const char **pp) | |
| 546 { | |
| 547 const char *p = *pp; | |
| 548 int backquote = 0; | |
| 549 int inside = 0; | |
| 550 | |
| 551 for (;;) | |
| 552 { | |
| 553 char c = *p; | |
| 554 if (c == '\0') | |
| 555 break; | |
| 556 ++p; | |
| 557 if (backquote) | |
| 558 obstack_1grow (&temporary_obstack, c); | |
| 559 else if (! inside && c == ' ') | |
| 560 break; | |
| 561 else if (! inside && c == '\\') | |
| 562 backquote = 1; | |
| 563 else if (c == '\'') | |
| 564 inside = !inside; | |
| 565 else | |
| 566 obstack_1grow (&temporary_obstack, c); | |
| 567 } | |
| 568 | |
| 569 obstack_1grow (&temporary_obstack, '\0'); | |
| 570 *pp = p; | |
| 571 return XOBFINISH (&temporary_obstack, char *); | |
| 572 } | |
| 573 | |
| 574 void | |
| 575 dump_file (const char *name, FILE *to) | |
| 576 { | |
| 577 FILE *stream = fopen (name, "r"); | |
| 578 | |
| 579 if (stream == 0) | |
| 580 return; | |
| 581 while (1) | |
| 582 { | |
| 583 int c; | |
| 584 while (c = getc (stream), | |
| 585 c != EOF && (ISIDNUM (c) || c == '$' || c == '.')) | |
| 586 obstack_1grow (&temporary_obstack, c); | |
| 587 if (obstack_object_size (&temporary_obstack) > 0) | |
| 588 { | |
| 589 const char *word, *p; | |
| 590 char *result; | |
| 591 obstack_1grow (&temporary_obstack, '\0'); | |
| 592 word = XOBFINISH (&temporary_obstack, const char *); | |
| 593 | |
| 594 if (*word == '.') | |
| 595 ++word, putc ('.', to); | |
| 596 p = word; | |
| 597 if (!strncmp (p, USER_LABEL_PREFIX, strlen (USER_LABEL_PREFIX))) | |
| 598 p += strlen (USER_LABEL_PREFIX); | |
| 599 | |
| 600 #ifdef HAVE_LD_DEMANGLE | |
| 601 result = 0; | |
| 602 #else | |
| 603 if (no_demangle) | |
| 604 result = 0; | |
| 605 else | |
| 606 result = cplus_demangle (p, DMGL_PARAMS | DMGL_ANSI | DMGL_VERBOSE); | |
| 607 #endif | |
| 608 | |
| 609 if (result) | |
| 610 { | |
| 611 int diff; | |
| 612 fputs (result, to); | |
| 613 | |
| 614 diff = strlen (word) - strlen (result); | |
| 615 while (diff > 0 && c == ' ') | |
| 616 --diff, putc (' ', to); | |
| 617 if (diff < 0 && c == ' ') | |
| 618 { | |
| 619 while (diff < 0 && c == ' ') | |
| 620 ++diff, c = getc (stream); | |
| 621 if (!ISSPACE (c)) | |
| 622 { | |
| 623 /* Make sure we output at least one space, or | |
| 624 the demangled symbol name will run into | |
| 625 whatever text follows. */ | |
| 626 putc (' ', to); | |
| 627 } | |
| 628 } | |
| 629 | |
| 630 free (result); | |
| 631 } | |
| 632 else | |
| 633 fputs (word, to); | |
| 634 | |
| 635 fflush (to); | |
| 636 obstack_free (&temporary_obstack, temporary_firstobj); | |
| 637 } | |
| 638 if (c == EOF) | |
| 639 break; | |
| 640 putc (c, to); | |
| 641 } | |
| 642 fclose (stream); | |
| 643 } | |
| 644 | |
| 645 /* Return the kind of symbol denoted by name S. */ | |
| 646 | |
| 647 static symkind | |
| 648 is_ctor_dtor (const char *s) | |
| 649 { | |
|
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650 struct names { const char *const name; const int len; symkind ret; |
| 0 | 651 const int two_underscores; }; |
| 652 | |
| 653 const struct names *p; | |
| 654 int ch; | |
| 655 const char *orig_s = s; | |
| 656 | |
| 657 static const struct names special[] = { | |
| 658 #ifndef NO_DOLLAR_IN_LABEL | |
| 659 { "GLOBAL__I$", sizeof ("GLOBAL__I$")-1, SYM_CTOR, 0 }, | |
| 660 { "GLOBAL__D$", sizeof ("GLOBAL__D$")-1, SYM_DTOR, 0 }, | |
| 661 #else | |
| 662 #ifndef NO_DOT_IN_LABEL | |
| 663 { "GLOBAL__I.", sizeof ("GLOBAL__I.")-1, SYM_CTOR, 0 }, | |
| 664 { "GLOBAL__D.", sizeof ("GLOBAL__D.")-1, SYM_DTOR, 0 }, | |
| 665 #endif /* NO_DOT_IN_LABEL */ | |
| 666 #endif /* NO_DOLLAR_IN_LABEL */ | |
| 667 { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, SYM_CTOR, 0 }, | |
| 668 { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, SYM_DTOR, 0 }, | |
| 669 { "GLOBAL__F_", sizeof ("GLOBAL__F_")-1, SYM_DWEH, 0 }, | |
| 670 { "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, SYM_INIT, 0 }, | |
| 671 { "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, SYM_FINI, 0 }, | |
| 672 { NULL, 0, SYM_REGULAR, 0 } | |
| 673 }; | |
| 674 | |
| 675 while ((ch = *s) == '_') | |
| 676 ++s; | |
| 677 | |
| 678 if (s == orig_s) | |
| 679 return SYM_REGULAR; | |
| 680 | |
| 681 for (p = &special[0]; p->len > 0; p++) | |
| 682 { | |
| 683 if (ch == p->name[0] | |
| 684 && (!p->two_underscores || ((s - orig_s) >= 2)) | |
| 685 && strncmp(s, p->name, p->len) == 0) | |
| 686 { | |
| 687 return p->ret; | |
| 688 } | |
| 689 } | |
| 690 return SYM_REGULAR; | |
| 691 } | |
| 692 | |
| 693 /* We maintain two prefix lists: one from COMPILER_PATH environment variable | |
| 694 and one from the PATH variable. */ | |
| 695 | |
| 696 static struct path_prefix cpath, path; | |
| 697 | |
| 698 #ifdef CROSS_DIRECTORY_STRUCTURE | |
| 699 /* This is the name of the target machine. We use it to form the name | |
| 700 of the files to execute. */ | |
| 701 | |
| 702 static const char *const target_machine = TARGET_MACHINE; | |
| 703 #endif | |
| 704 | |
| 705 /* Search for NAME using prefix list PPREFIX. We only look for executable | |
| 706 files. | |
| 707 | |
| 708 Return 0 if not found, otherwise return its name, allocated with malloc. */ | |
| 709 | |
| 710 static char * | |
| 711 find_a_file (struct path_prefix *pprefix, const char *name) | |
| 712 { | |
| 713 char *temp; | |
| 714 struct prefix_list *pl; | |
| 715 int len = pprefix->max_len + strlen (name) + 1; | |
| 716 | |
| 717 if (debug) | |
| 718 fprintf (stderr, "Looking for '%s'\n", name); | |
| 719 | |
| 720 #ifdef HOST_EXECUTABLE_SUFFIX | |
| 721 len += strlen (HOST_EXECUTABLE_SUFFIX); | |
| 722 #endif | |
| 723 | |
| 724 temp = XNEWVEC (char, len); | |
| 725 | |
| 726 /* Determine the filename to execute (special case for absolute paths). */ | |
| 727 | |
| 728 if (IS_ABSOLUTE_PATH (name)) | |
| 729 { | |
| 730 if (access (name, X_OK) == 0) | |
| 731 { | |
| 732 strcpy (temp, name); | |
| 733 | |
| 734 if (debug) | |
| 735 fprintf (stderr, " - found: absolute path\n"); | |
| 736 | |
| 737 return temp; | |
| 738 } | |
| 739 | |
| 740 #ifdef HOST_EXECUTABLE_SUFFIX | |
| 741 /* Some systems have a suffix for executable files. | |
| 742 So try appending that. */ | |
| 743 strcpy (temp, name); | |
| 744 strcat (temp, HOST_EXECUTABLE_SUFFIX); | |
| 745 | |
| 746 if (access (temp, X_OK) == 0) | |
| 747 return temp; | |
| 748 #endif | |
| 749 | |
| 750 if (debug) | |
| 751 fprintf (stderr, " - failed to locate using absolute path\n"); | |
| 752 } | |
| 753 else | |
| 754 for (pl = pprefix->plist; pl; pl = pl->next) | |
| 755 { | |
| 756 struct stat st; | |
| 757 | |
| 758 strcpy (temp, pl->prefix); | |
| 759 strcat (temp, name); | |
| 760 | |
| 761 if (stat (temp, &st) >= 0 | |
| 762 && ! S_ISDIR (st.st_mode) | |
| 763 && access (temp, X_OK) == 0) | |
| 764 return temp; | |
| 765 | |
| 766 #ifdef HOST_EXECUTABLE_SUFFIX | |
| 767 /* Some systems have a suffix for executable files. | |
| 768 So try appending that. */ | |
| 769 strcat (temp, HOST_EXECUTABLE_SUFFIX); | |
| 770 | |
| 771 if (stat (temp, &st) >= 0 | |
| 772 && ! S_ISDIR (st.st_mode) | |
| 773 && access (temp, X_OK) == 0) | |
| 774 return temp; | |
| 775 #endif | |
| 776 } | |
| 777 | |
| 778 if (debug && pprefix->plist == NULL) | |
| 779 fprintf (stderr, " - failed: no entries in prefix list\n"); | |
| 780 | |
| 781 free (temp); | |
| 782 return 0; | |
| 783 } | |
| 784 | |
| 785 /* Add an entry for PREFIX to prefix list PPREFIX. */ | |
| 786 | |
| 787 static void | |
| 788 add_prefix (struct path_prefix *pprefix, const char *prefix) | |
| 789 { | |
| 790 struct prefix_list *pl, **prev; | |
| 791 int len; | |
| 792 | |
| 793 if (pprefix->plist) | |
| 794 { | |
| 795 for (pl = pprefix->plist; pl->next; pl = pl->next) | |
| 796 ; | |
| 797 prev = &pl->next; | |
| 798 } | |
| 799 else | |
| 800 prev = &pprefix->plist; | |
| 801 | |
| 802 /* Keep track of the longest prefix. */ | |
| 803 | |
| 804 len = strlen (prefix); | |
| 805 if (len > pprefix->max_len) | |
| 806 pprefix->max_len = len; | |
| 807 | |
| 808 pl = XNEW (struct prefix_list); | |
| 809 pl->prefix = xstrdup (prefix); | |
| 810 | |
| 811 if (*prev) | |
| 812 pl->next = *prev; | |
| 813 else | |
| 814 pl->next = (struct prefix_list *) 0; | |
| 815 *prev = pl; | |
| 816 } | |
| 817 | |
| 818 /* Take the value of the environment variable ENV, break it into a path, and | |
| 819 add of the entries to PPREFIX. */ | |
| 820 | |
| 821 static void | |
| 822 prefix_from_env (const char *env, struct path_prefix *pprefix) | |
| 823 { | |
| 824 const char *p; | |
| 825 GET_ENVIRONMENT (p, env); | |
| 826 | |
| 827 if (p) | |
| 828 prefix_from_string (p, pprefix); | |
| 829 } | |
| 830 | |
| 831 static void | |
| 832 prefix_from_string (const char *p, struct path_prefix *pprefix) | |
| 833 { | |
| 834 const char *startp, *endp; | |
| 835 char *nstore = XNEWVEC (char, strlen (p) + 3); | |
| 836 | |
| 837 if (debug) | |
| 838 fprintf (stderr, "Convert string '%s' into prefixes, separator = '%c'\n", p, PATH_SEPARATOR); | |
| 839 | |
| 840 startp = endp = p; | |
| 841 while (1) | |
| 842 { | |
| 843 if (*endp == PATH_SEPARATOR || *endp == 0) | |
| 844 { | |
| 845 strncpy (nstore, startp, endp-startp); | |
| 846 if (endp == startp) | |
| 847 { | |
| 848 strcpy (nstore, "./"); | |
| 849 } | |
| 850 else if (! IS_DIR_SEPARATOR (endp[-1])) | |
| 851 { | |
| 852 nstore[endp-startp] = DIR_SEPARATOR; | |
| 853 nstore[endp-startp+1] = 0; | |
| 854 } | |
| 855 else | |
| 856 nstore[endp-startp] = 0; | |
| 857 | |
| 858 if (debug) | |
| 859 fprintf (stderr, " - add prefix: %s\n", nstore); | |
| 860 | |
| 861 add_prefix (pprefix, nstore); | |
| 862 if (*endp == 0) | |
| 863 break; | |
| 864 endp = startp = endp + 1; | |
| 865 } | |
| 866 else | |
| 867 endp++; | |
| 868 } | |
| 869 free (nstore); | |
| 870 } | |
|
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871 |
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872 #ifdef OBJECT_FORMAT_NONE |
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873 |
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874 /* Add an entry for the object file NAME to object file list LIST. |
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875 New entries are added at the end of the list. The original pointer |
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876 value of NAME is preserved, i.e., no string copy is performed. */ |
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877 |
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878 static void |
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879 add_lto_object (struct lto_object_list *list, const char *name) |
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880 { |
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881 struct lto_object *n = XNEW (struct lto_object); |
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882 n->name = name; |
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883 n->next = NULL; |
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884 |
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885 if (list->last) |
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886 list->last->next = n; |
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887 else |
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888 list->first = n; |
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889 |
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890 list->last = n; |
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891 } |
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892 #endif /* OBJECT_FORMAT_NONE */ |
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893 |
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894 |
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895 /* Perform a link-time recompilation and relink if any of the object |
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896 files contain LTO info. The linker command line LTO_LD_ARGV |
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897 represents the linker command that would produce a final executable |
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898 without the use of LTO. OBJECT_LST is a vector of object file names |
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899 appearing in LTO_LD_ARGV that are to be considerd for link-time |
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900 recompilation, where OBJECT is a pointer to the last valid element. |
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901 (This awkward convention avoids an impedance mismatch with the |
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902 usage of similarly-named variables in main().) The elements of |
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903 OBJECT_LST must be identical, i.e., pointer equal, to the |
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904 corresponding arguments in LTO_LD_ARGV. |
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905 |
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906 Upon entry, at least one linker run has been performed without the |
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907 use of any LTO info that might be present. Any recompilations |
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908 necessary for template instantiations have been performed, and |
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909 initializer/finalizer tables have been created if needed and |
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910 included in the linker command line LTO_LD_ARGV. If any of the |
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911 object files contain LTO info, we run the LTO back end on all such |
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912 files, and perform the final link with the LTO back end output |
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913 substituted for the LTO-optimized files. In some cases, a final |
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914 link with all link-time generated code has already been performed, |
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915 so there is no need to relink if no LTO info is found. In other |
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916 cases, our caller has not produced the final executable, and is |
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917 relying on us to perform the required link whether LTO info is |
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918 present or not. In that case, the FORCE argument should be true. |
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919 Note that the linker command line argument LTO_LD_ARGV passed into |
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920 this function may be modified in place. */ |
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921 |
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922 static void |
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923 maybe_run_lto_and_relink (char **lto_ld_argv, char **object_lst, |
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924 const char **object, bool force) |
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925 { |
|
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update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
926 const char **object_file = CONST_CAST2 (const char **, char **, object_lst); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
927 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
928 int num_lto_c_args = 1; /* Allow space for the terminating NULL. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
929 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
930 while (object_file < object) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
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diff
changeset
|
931 { |
|
77e2b8dfacca
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parents:
0
diff
changeset
|
932 /* If file contains LTO info, add it to the list of LTO objects. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
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diff
changeset
|
933 scan_prog_file (*object_file++, PASS_LTOINFO, SCAN_ALL); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
934 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
935 /* Increment the argument count by the number of object file arguments |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
936 we will add. An upper bound suffices, so just count all of the |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
937 object files regardless of whether they contain LTO info. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
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diff
changeset
|
938 num_lto_c_args++; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
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diff
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|
939 } |
|
77e2b8dfacca
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parents:
0
diff
changeset
|
940 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
941 if (lto_objects.first) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
942 { |
|
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parents:
0
diff
changeset
|
943 char **lto_c_argv; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
944 const char **lto_c_ptr; |
|
77e2b8dfacca
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0
diff
changeset
|
945 const char **p, **q, **r; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
946 const char **lto_o_ptr; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
947 struct lto_object *list; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
948 char *lto_wrapper = getenv ("COLLECT_LTO_WRAPPER"); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
949 struct pex_obj *pex; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
950 const char *prog = "lto-wrapper"; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
951 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
952 if (!lto_wrapper) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
953 fatal ("COLLECT_LTO_WRAPPER must be set."); |
|
77e2b8dfacca
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parents:
0
diff
changeset
|
954 |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
changeset
|
955 num_lto_c_args++; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
changeset
|
956 |
|
55
77e2b8dfacca
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parents:
0
diff
changeset
|
957 /* There is at least one object file containing LTO info, |
|
77e2b8dfacca
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parents:
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diff
changeset
|
958 so we need to run the LTO back end and relink. */ |
|
77e2b8dfacca
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parents:
0
diff
changeset
|
959 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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diff
changeset
|
960 lto_c_argv = (char **) xcalloc (sizeof (char *), num_lto_c_args); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
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diff
changeset
|
961 lto_c_ptr = CONST_CAST2 (const char **, char **, lto_c_argv); |
|
77e2b8dfacca
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parents:
0
diff
changeset
|
962 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
963 *lto_c_ptr++ = lto_wrapper; |
|
77e2b8dfacca
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parents:
0
diff
changeset
|
964 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
965 /* Add LTO objects to the wrapper command line. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
966 for (list = lto_objects.first; list; list = list->next) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
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diff
changeset
|
967 *lto_c_ptr++ = list->name; |
|
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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diff
changeset
|
968 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
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diff
changeset
|
969 *lto_c_ptr = NULL; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
970 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
971 /* Run the LTO back end. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
972 pex = collect_execute (prog, lto_c_argv, NULL, NULL, PEX_SEARCH); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
973 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
974 int c; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
975 FILE *stream; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
976 size_t i, num_files; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
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diff
changeset
|
977 char *start, *end; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
978 |
|
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update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
979 stream = pex_read_output (pex, 0); |
|
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
980 gcc_assert (stream); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
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0
diff
changeset
|
981 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
982 num_files = 0; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
983 while ((c = getc (stream)) != EOF) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
984 { |
|
77e2b8dfacca
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parents:
0
diff
changeset
|
985 obstack_1grow (&temporary_obstack, c); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
986 if (c == '\n') |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
987 ++num_files; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
988 } |
|
77e2b8dfacca
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0
diff
changeset
|
989 |
|
77e2b8dfacca
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diff
changeset
|
990 lto_o_files = XNEWVEC (char *, num_files + 1); |
|
77e2b8dfacca
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0
diff
changeset
|
991 lto_o_files[num_files] = NULL; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
992 start = XOBFINISH (&temporary_obstack, char *); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
993 for (i = 0; i < num_files; ++i) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
994 { |
|
77e2b8dfacca
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parents:
0
diff
changeset
|
995 end = start; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
996 while (*end != '\n') |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
997 ++end; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
998 *end = '\0'; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
999 |
|
77e2b8dfacca
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0
diff
changeset
|
1000 lto_o_files[i] = xstrdup (start); |
|
77e2b8dfacca
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diff
changeset
|
1001 |
|
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changeset
|
1002 start = end + 1; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
1003 } |
|
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0
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changeset
|
1004 |
|
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changeset
|
1005 obstack_free (&temporary_obstack, temporary_firstobj); |
|
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changeset
|
1006 } |
|
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changeset
|
1007 do_wait (prog, pex); |
|
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changeset
|
1008 pex = NULL; |
|
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changeset
|
1009 |
|
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changeset
|
1010 /* After running the LTO back end, we will relink, substituting |
|
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changeset
|
1011 the LTO output for the object files that we submitted to the |
|
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changeset
|
1012 LTO. Here, we modify the linker command line for the relink. */ |
|
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changeset
|
1013 p = CONST_CAST2 (const char **, char **, lto_ld_argv); |
|
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changeset
|
1014 lto_o_ptr = CONST_CAST2 (const char **, char **, lto_o_files); |
|
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changeset
|
1015 |
|
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changeset
|
1016 while (*p != NULL) |
|
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changeset
|
1017 { |
|
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changeset
|
1018 for (list = lto_objects.first; list; list = list->next) |
|
77e2b8dfacca
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changeset
|
1019 { |
|
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changeset
|
1020 if (*p == list->name) /* Note test for pointer equality! */ |
|
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changeset
|
1021 { |
|
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0
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changeset
|
1022 /* Excise argument from linker command line. */ |
|
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diff
changeset
|
1023 if (*lto_o_ptr) |
|
77e2b8dfacca
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changeset
|
1024 { |
|
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changeset
|
1025 /* Replace first argument with LTO output file. */ |
|
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update it from 4.4.3 to 4.5.0
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changeset
|
1026 *p++ = *lto_o_ptr++; |
|
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changeset
|
1027 } |
|
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1028 else |
|
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1029 { |
|
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1030 /* Move following arguments one position earlier, |
|
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|
1031 overwriting the current argument. */ |
|
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1032 q = p; |
|
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1033 r = p + 1; |
|
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|
1034 while (*r != NULL) |
|
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1035 *q++ = *r++; |
|
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1036 *q = NULL; |
|
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1037 } |
|
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1038 |
|
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1039 /* No need to continue searching the LTO object list. */ |
|
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1040 break; |
|
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1041 } |
|
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1042 } |
|
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1043 |
|
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1044 /* If we didn't find a match, move on to the next argument. |
|
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1045 Otherwise, P has been set to the correct argument position |
|
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1046 at which to continue. */ |
|
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1047 if (!list) ++p; |
|
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1048 } |
|
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1049 |
|
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1050 /* The code above assumes we will never have more lto output files than |
|
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1051 input files. Otherwise, we need to resize lto_ld_argv. Check this |
|
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1052 assumption. */ |
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1053 if (*lto_o_ptr) |
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1054 fatal ("too many lto output files"); |
|
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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", lto_ld_argv); |
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1059 |
|
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1060 maybe_unlink_list (lto_o_files); |
|
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1061 } |
|
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1062 else if (force) |
|
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1063 { |
|
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1064 /* Our caller is relying on us to do the link |
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1065 even though there is no LTO back end work to be done. */ |
|
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1066 fork_execute ("ld", lto_ld_argv); |
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1067 } |
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1068 } |
| 0 | 1069 |
| 1070 /* Main program. */ | |
| 1071 | |
| 1072 int | |
| 1073 main (int argc, char **argv) | |
| 1074 { | |
| 1075 static const char *const ld_suffix = "ld"; | |
|
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1076 static const char *const plugin_ld_suffix = PLUGIN_LD; |
| 0 | 1077 static const char *const real_ld_suffix = "real-ld"; |
| 1078 static const char *const collect_ld_suffix = "collect-ld"; | |
| 1079 static const char *const nm_suffix = "nm"; | |
| 1080 static const char *const gnm_suffix = "gnm"; | |
| 1081 #ifdef LDD_SUFFIX | |
| 1082 static const char *const ldd_suffix = LDD_SUFFIX; | |
| 1083 #endif | |
| 1084 static const char *const strip_suffix = "strip"; | |
| 1085 static const char *const gstrip_suffix = "gstrip"; | |
| 1086 | |
| 1087 #ifdef CROSS_DIRECTORY_STRUCTURE | |
| 1088 /* If we look for a program in the compiler directories, we just use | |
| 1089 the short name, since these directories are already system-specific. | |
| 1090 But it we look for a program in the system directories, we need to | |
| 1091 qualify the program name with the target machine. */ | |
| 1092 | |
| 1093 const char *const full_ld_suffix = | |
| 1094 concat(target_machine, "-", ld_suffix, NULL); | |
|
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1095 const char *const full_plugin_ld_suffix = |
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1096 concat(target_machine, "-", plugin_ld_suffix, NULL); |
| 0 | 1097 const char *const full_nm_suffix = |
| 1098 concat (target_machine, "-", nm_suffix, NULL); | |
| 1099 const char *const full_gnm_suffix = | |
| 1100 concat (target_machine, "-", gnm_suffix, NULL); | |
| 1101 #ifdef LDD_SUFFIX | |
| 1102 const char *const full_ldd_suffix = | |
| 1103 concat (target_machine, "-", ldd_suffix, NULL); | |
| 1104 #endif | |
| 1105 const char *const full_strip_suffix = | |
| 1106 concat (target_machine, "-", strip_suffix, NULL); | |
| 1107 const char *const full_gstrip_suffix = | |
| 1108 concat (target_machine, "-", gstrip_suffix, NULL); | |
| 1109 #else | |
| 1110 const char *const full_ld_suffix = ld_suffix; | |
|
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1111 const char *const full_plugin_ld_suffix = plugin_ld_suffix; |
| 0 | 1112 const char *const full_nm_suffix = nm_suffix; |
| 1113 const char *const full_gnm_suffix = gnm_suffix; | |
| 1114 #ifdef LDD_SUFFIX | |
| 1115 const char *const full_ldd_suffix = ldd_suffix; | |
| 1116 #endif | |
| 1117 const char *const full_strip_suffix = strip_suffix; | |
| 1118 const char *const full_gstrip_suffix = gstrip_suffix; | |
| 1119 #endif /* CROSS_DIRECTORY_STRUCTURE */ | |
| 1120 | |
| 1121 const char *arg; | |
| 1122 FILE *outf; | |
| 1123 #ifdef COLLECT_EXPORT_LIST | |
| 1124 FILE *exportf; | |
| 1125 #endif | |
| 1126 const char *ld_file_name; | |
| 1127 const char *p; | |
| 1128 char **c_argv; | |
| 1129 const char **c_ptr; | |
| 1130 char **ld1_argv; | |
| 1131 const char **ld1; | |
|
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1132 bool use_plugin = false; |
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1133 |
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1134 /* The kinds of symbols we will have to consider when scanning the |
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1135 outcome of a first pass link. This is ALL to start with, then might |
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1136 be adjusted before getting to the first pass link per se, typically on |
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1137 AIX where we perform an early scan of objects and libraries to fetch |
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1138 the list of global ctors/dtors and make sure they are not garbage |
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1139 collected. */ |
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1140 scanfilter ld1_filter = SCAN_ALL; |
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1141 |
| 0 | 1142 char **ld2_argv; |
| 1143 const char **ld2; | |
| 1144 char **object_lst; | |
| 1145 const char **object; | |
| 1146 int first_file; | |
| 1147 int num_c_args; | |
| 1148 char **old_argv; | |
| 1149 | |
|
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1150 bool use_verbose = false; |
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1151 |
| 0 | 1152 old_argv = argv; |
| 1153 expandargv (&argc, &argv); | |
| 1154 if (argv != old_argv) | |
| 1155 at_file_supplied = 1; | |
| 1156 | |
| 1157 num_c_args = argc + 9; | |
| 1158 | |
| 1159 no_demangle = !! getenv ("COLLECT_NO_DEMANGLE"); | |
| 1160 | |
| 1161 /* Suppress demangling by the real linker, which may be broken. */ | |
| 1162 putenv (xstrdup ("COLLECT_NO_DEMANGLE=")); | |
| 1163 | |
| 1164 #if defined (COLLECT2_HOST_INITIALIZATION) | |
| 1165 /* Perform system dependent initialization, if necessary. */ | |
| 1166 COLLECT2_HOST_INITIALIZATION; | |
| 1167 #endif | |
| 1168 | |
| 1169 #ifdef SIGCHLD | |
| 1170 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will | |
| 1171 receive the signal. A different setting is inheritable */ | |
| 1172 signal (SIGCHLD, SIG_DFL); | |
| 1173 #endif | |
| 1174 | |
| 1175 /* Unlock the stdio streams. */ | |
| 1176 unlock_std_streams (); | |
| 1177 | |
| 1178 gcc_init_libintl (); | |
| 1179 | |
| 1180 /* Do not invoke xcalloc before this point, since locale needs to be | |
| 1181 set first, in case a diagnostic is issued. */ | |
| 1182 | |
|
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1183 ld1_argv = XCNEWVEC (char *, argc + 4); |
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1184 ld1 = CONST_CAST2 (const char **, char **, ld1_argv); |
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1185 ld2_argv = XCNEWVEC (char *, argc + 11); |
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1186 ld2 = CONST_CAST2 (const char **, char **, ld2_argv); |
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1187 object_lst = XCNEWVEC (char *, argc); |
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1188 object = CONST_CAST2 (const char **, char **, object_lst); |
| 0 | 1189 |
| 1190 #ifdef DEBUG | |
| 1191 debug = 1; | |
| 1192 #endif | |
| 1193 | |
| 1194 /* Parse command line early for instances of -debug. This allows | |
| 1195 the debug flag to be set before functions like find_a_file() | |
|
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1196 are called. We also look for the -flto or -fwhopr flag to know |
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1197 what LTO mode we are in. */ |
| 0 | 1198 { |
| 1199 int i; | |
| 1200 | |
| 1201 for (i = 1; argv[i] != NULL; i ++) | |
| 1202 { | |
| 1203 if (! strcmp (argv[i], "-debug")) | |
|
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1204 debug = true; |
|
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1205 else if (! strcmp (argv[i], "-flto") && ! use_plugin) |
|
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1206 { |
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1207 use_verbose = true; |
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1208 lto_mode = LTO_MODE_LTO; |
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1209 } |
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1210 else if (! strncmp (argv[i], "-fwhopr", 7) && ! use_plugin) |
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1211 { |
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1212 use_verbose = true; |
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1213 lto_mode = LTO_MODE_WHOPR; |
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1214 } |
|
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1215 else if (! strcmp (argv[i], "-plugin")) |
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1216 { |
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1217 use_plugin = true; |
|
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1218 use_verbose = 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; | |
| 1239 } | |
| 1240 | |
| 1241 #ifndef DEFAULT_A_OUT_NAME | |
| 1242 output_file = "a.out"; | |
| 1243 #else | |
| 1244 output_file = DEFAULT_A_OUT_NAME; | |
| 1245 #endif | |
| 1246 | |
| 1247 obstack_begin (&temporary_obstack, 0); | |
| 1248 temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0); | |
| 1249 | |
| 1250 #ifndef HAVE_LD_DEMANGLE | |
| 1251 current_demangling_style = auto_demangling; | |
| 1252 #endif | |
| 1253 p = getenv ("COLLECT_GCC_OPTIONS"); | |
| 1254 while (p && *p) | |
| 1255 { | |
| 1256 const char *q = extract_string (&p); | |
| 1257 if (*q == '-' && (q[1] == 'm' || q[1] == 'f')) | |
| 1258 num_c_args++; | |
| 1259 } | |
| 1260 obstack_free (&temporary_obstack, temporary_firstobj); | |
| 1261 | |
| 1262 /* -fno-profile-arcs -fno-test-coverage -fno-branch-probabilities | |
|
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1263 -fno-exceptions -w -fno-whole-program */ |
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1264 num_c_args += 6; |
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1265 |
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1266 c_argv = XCNEWVEC (char *, num_c_args); |
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1267 c_ptr = CONST_CAST2 (const char **, char **, c_argv); |
| 0 | 1268 |
| 1269 if (argc < 2) | |
| 1270 fatal ("no arguments"); | |
| 1271 | |
| 1272 #ifdef SIGQUIT | |
| 1273 if (signal (SIGQUIT, SIG_IGN) != SIG_IGN) | |
| 1274 signal (SIGQUIT, handler); | |
| 1275 #endif | |
| 1276 if (signal (SIGINT, SIG_IGN) != SIG_IGN) | |
| 1277 signal (SIGINT, handler); | |
| 1278 #ifdef SIGALRM | |
| 1279 if (signal (SIGALRM, SIG_IGN) != SIG_IGN) | |
| 1280 signal (SIGALRM, handler); | |
| 1281 #endif | |
| 1282 #ifdef SIGHUP | |
| 1283 if (signal (SIGHUP, SIG_IGN) != SIG_IGN) | |
| 1284 signal (SIGHUP, handler); | |
| 1285 #endif | |
| 1286 if (signal (SIGSEGV, SIG_IGN) != SIG_IGN) | |
| 1287 signal (SIGSEGV, handler); | |
| 1288 #ifdef SIGBUS | |
| 1289 if (signal (SIGBUS, SIG_IGN) != SIG_IGN) | |
| 1290 signal (SIGBUS, handler); | |
| 1291 #endif | |
| 1292 | |
| 1293 /* Extract COMPILER_PATH and PATH into our prefix list. */ | |
| 1294 prefix_from_env ("COMPILER_PATH", &cpath); | |
| 1295 prefix_from_env ("PATH", &path); | |
| 1296 | |
| 1297 /* Try to discover a valid linker/nm/strip to use. */ | |
| 1298 | |
| 1299 /* Maybe we know the right file to use (if not cross). */ | |
| 1300 ld_file_name = 0; | |
| 1301 #ifdef DEFAULT_LINKER | |
| 1302 if (access (DEFAULT_LINKER, X_OK) == 0) | |
| 1303 ld_file_name = DEFAULT_LINKER; | |
| 1304 if (ld_file_name == 0) | |
| 1305 #endif | |
| 1306 #ifdef REAL_LD_FILE_NAME | |
| 1307 ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME); | |
| 1308 if (ld_file_name == 0) | |
| 1309 #endif | |
| 1310 /* Search the (target-specific) compiler dirs for ld'. */ | |
| 1311 ld_file_name = find_a_file (&cpath, real_ld_suffix); | |
| 1312 /* Likewise for `collect-ld'. */ | |
| 1313 if (ld_file_name == 0) | |
| 1314 ld_file_name = find_a_file (&cpath, collect_ld_suffix); | |
| 1315 /* Search the compiler directories for `ld'. We have protection against | |
| 1316 recursive calls in find_a_file. */ | |
| 1317 if (ld_file_name == 0) | |
|
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1318 ld_file_name = find_a_file (&cpath, |
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1319 use_plugin |
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1320 ? plugin_ld_suffix |
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1321 : ld_suffix); |
| 0 | 1322 /* Search the ordinary system bin directories |
| 1323 for `ld' (if native linking) or `TARGET-ld' (if cross). */ | |
| 1324 if (ld_file_name == 0) | |
|
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1325 ld_file_name = find_a_file (&path, |
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1326 use_plugin |
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1327 ? full_plugin_ld_suffix |
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1328 : full_ld_suffix); |
| 0 | 1329 |
| 1330 #ifdef REAL_NM_FILE_NAME | |
| 1331 nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME); | |
| 1332 if (nm_file_name == 0) | |
| 1333 #endif | |
| 1334 nm_file_name = find_a_file (&cpath, gnm_suffix); | |
| 1335 if (nm_file_name == 0) | |
| 1336 nm_file_name = find_a_file (&path, full_gnm_suffix); | |
| 1337 if (nm_file_name == 0) | |
| 1338 nm_file_name = find_a_file (&cpath, nm_suffix); | |
| 1339 if (nm_file_name == 0) | |
| 1340 nm_file_name = find_a_file (&path, full_nm_suffix); | |
| 1341 | |
| 1342 #ifdef LDD_SUFFIX | |
| 1343 ldd_file_name = find_a_file (&cpath, ldd_suffix); | |
| 1344 if (ldd_file_name == 0) | |
| 1345 ldd_file_name = find_a_file (&path, full_ldd_suffix); | |
| 1346 #endif | |
| 1347 | |
| 1348 #ifdef REAL_STRIP_FILE_NAME | |
| 1349 strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME); | |
| 1350 if (strip_file_name == 0) | |
| 1351 #endif | |
| 1352 strip_file_name = find_a_file (&cpath, gstrip_suffix); | |
| 1353 if (strip_file_name == 0) | |
| 1354 strip_file_name = find_a_file (&path, full_gstrip_suffix); | |
| 1355 if (strip_file_name == 0) | |
| 1356 strip_file_name = find_a_file (&cpath, strip_suffix); | |
| 1357 if (strip_file_name == 0) | |
| 1358 strip_file_name = find_a_file (&path, full_strip_suffix); | |
| 1359 | |
| 1360 /* Determine the full path name of the C compiler to use. */ | |
| 1361 c_file_name = getenv ("COLLECT_GCC"); | |
| 1362 if (c_file_name == 0) | |
| 1363 { | |
| 1364 #ifdef CROSS_DIRECTORY_STRUCTURE | |
| 1365 c_file_name = concat (target_machine, "-gcc", NULL); | |
| 1366 #else | |
| 1367 c_file_name = "gcc"; | |
| 1368 #endif | |
| 1369 } | |
| 1370 | |
| 1371 p = find_a_file (&cpath, c_file_name); | |
| 1372 | |
| 1373 /* Here it should be safe to use the system search path since we should have | |
| 1374 already qualified the name of the compiler when it is needed. */ | |
| 1375 if (p == 0) | |
| 1376 p = find_a_file (&path, c_file_name); | |
| 1377 | |
| 1378 if (p) | |
| 1379 c_file_name = p; | |
| 1380 | |
| 1381 *ld1++ = *ld2++ = ld_file_name; | |
| 1382 | |
| 1383 /* Make temp file names. */ | |
| 1384 c_file = make_temp_file (".c"); | |
| 1385 o_file = make_temp_file (".o"); | |
| 1386 #ifdef COLLECT_EXPORT_LIST | |
| 1387 export_file = make_temp_file (".x"); | |
| 1388 #endif | |
| 1389 ldout = make_temp_file (".ld"); | |
| 1390 lderrout = make_temp_file (".le"); | |
| 1391 *c_ptr++ = c_file_name; | |
| 1392 *c_ptr++ = "-x"; | |
| 1393 *c_ptr++ = "c"; | |
| 1394 *c_ptr++ = "-c"; | |
| 1395 *c_ptr++ = "-o"; | |
| 1396 *c_ptr++ = o_file; | |
| 1397 | |
| 1398 #ifdef COLLECT_EXPORT_LIST | |
| 1399 /* Generate a list of directories from LIBPATH. */ | |
| 1400 prefix_from_env ("LIBPATH", &libpath_lib_dirs); | |
| 1401 /* Add to this list also two standard directories where | |
| 1402 AIX loader always searches for libraries. */ | |
| 1403 add_prefix (&libpath_lib_dirs, "/lib"); | |
| 1404 add_prefix (&libpath_lib_dirs, "/usr/lib"); | |
| 1405 #endif | |
| 1406 | |
| 1407 /* Get any options that the upper GCC wants to pass to the sub-GCC. | |
| 1408 | |
| 1409 AIX support needs to know if -shared has been specified before | |
| 1410 parsing commandline arguments. */ | |
| 1411 | |
| 1412 p = getenv ("COLLECT_GCC_OPTIONS"); | |
| 1413 while (p && *p) | |
| 1414 { | |
| 1415 const char *q = extract_string (&p); | |
| 1416 if (*q == '-' && (q[1] == 'm' || q[1] == 'f')) | |
| 1417 *c_ptr++ = xstrdup (q); | |
| 1418 if (strcmp (q, "-EL") == 0 || strcmp (q, "-EB") == 0) | |
| 1419 *c_ptr++ = xstrdup (q); | |
| 1420 if (strcmp (q, "-shared") == 0) | |
| 1421 shared_obj = 1; | |
| 1422 if (*q == '-' && q[1] == 'B') | |
| 1423 { | |
| 1424 *c_ptr++ = xstrdup (q); | |
| 1425 if (q[2] == 0) | |
| 1426 { | |
| 1427 q = extract_string (&p); | |
| 1428 *c_ptr++ = xstrdup (q); | |
| 1429 } | |
| 1430 } | |
|
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1431 if (use_verbose && *q == '-' && q[1] == 'v' && q[2] == 0) |
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1432 { |
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1433 /* Turn on trace in collect2 if needed. */ |
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1434 vflag = true; |
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1435 } |
| 0 | 1436 } |
| 1437 obstack_free (&temporary_obstack, temporary_firstobj); | |
| 1438 *c_ptr++ = "-fno-profile-arcs"; | |
| 1439 *c_ptr++ = "-fno-test-coverage"; | |
| 1440 *c_ptr++ = "-fno-branch-probabilities"; | |
| 1441 *c_ptr++ = "-fno-exceptions"; | |
| 1442 *c_ptr++ = "-w"; | |
|
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1443 *c_ptr++ = "-fno-whole-program"; |
| 0 | 1444 |
| 1445 /* !!! When GCC calls collect2, | |
| 1446 it does not know whether it is calling collect2 or ld. | |
| 1447 So collect2 cannot meaningfully understand any options | |
| 1448 except those ld understands. | |
| 1449 If you propose to make GCC pass some other option, | |
| 1450 just imagine what will happen if ld is really ld!!! */ | |
| 1451 | |
| 1452 /* Parse arguments. Remember output file spec, pass the rest to ld. */ | |
| 1453 /* After the first file, put in the c++ rt0. */ | |
| 1454 | |
| 1455 first_file = 1; | |
| 1456 #ifdef HAVE_LD_DEMANGLE | |
| 1457 if (!demangle_flag && !no_demangle) | |
| 1458 demangle_flag = "--demangle"; | |
| 1459 if (demangle_flag) | |
| 1460 *ld1++ = *ld2++ = demangle_flag; | |
| 1461 #endif | |
| 1462 while ((arg = *++argv) != (char *) 0) | |
| 1463 { | |
| 1464 *ld1++ = *ld2++ = arg; | |
| 1465 | |
| 1466 if (arg[0] == '-') | |
| 1467 { | |
| 1468 switch (arg[1]) | |
| 1469 { | |
| 1470 case 'd': | |
| 1471 if (!strcmp (arg, "-debug")) | |
| 1472 { | |
| 1473 /* Already parsed. */ | |
| 1474 ld1--; | |
| 1475 ld2--; | |
| 1476 } | |
| 1477 if (!strcmp (arg, "-dynamic-linker") && argv[1]) | |
| 1478 { | |
| 1479 ++argv; | |
| 1480 *ld1++ = *ld2++ = *argv; | |
| 1481 } | |
| 1482 break; | |
| 1483 | |
|
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1484 case 'f': |
|
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1485 if (strcmp (arg, "-flto") == 0 |
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1486 || strncmp (arg, "-fwhopr", 7) == 0) |
|
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1487 { |
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1488 #ifdef ENABLE_LTO |
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1489 /* Do not pass LTO flag to the linker. */ |
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1490 ld1--; |
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1491 ld2--; |
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1492 #else |
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1493 error ("LTO support has not been enabled in this " |
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1494 "configuration"); |
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1495 #endif |
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1496 } |
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1497 break; |
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1498 |
| 0 | 1499 case 'l': |
| 1500 if (first_file) | |
| 1501 { | |
| 1502 /* place o_file BEFORE this argument! */ | |
| 1503 first_file = 0; | |
| 1504 ld2--; | |
| 1505 *ld2++ = o_file; | |
| 1506 *ld2++ = arg; | |
| 1507 } | |
| 1508 #ifdef COLLECT_EXPORT_LIST | |
| 1509 { | |
| 1510 /* Resolving full library name. */ | |
| 1511 const char *s = resolve_lib_name (arg+2); | |
| 1512 | |
| 1513 /* Saving a full library name. */ | |
| 1514 add_to_list (&libs, s); | |
| 1515 } | |
| 1516 #endif | |
| 1517 break; | |
| 1518 | |
| 1519 #ifdef COLLECT_EXPORT_LIST | |
| 1520 /* Saving directories where to search for libraries. */ | |
| 1521 case 'L': | |
| 1522 add_prefix (&cmdline_lib_dirs, arg+2); | |
| 1523 break; | |
| 1524 #else | |
| 1525 #if LINK_ELIMINATE_DUPLICATE_LDIRECTORIES | |
| 1526 case 'L': | |
|
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1527 if (is_in_args (arg, |
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|
1528 CONST_CAST2 (const char **, char **, ld1_argv), |
|
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|
1529 ld1 - 1)) |
| 0 | 1530 --ld1; |
| 1531 break; | |
| 1532 #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */ | |
| 1533 #endif | |
| 1534 | |
| 1535 case 'o': | |
| 1536 if (arg[2] == '\0') | |
| 1537 output_file = *ld1++ = *ld2++ = *++argv; | |
| 1538 else if (1 | |
| 1539 #ifdef SWITCHES_NEED_SPACES | |
| 1540 && ! strchr (SWITCHES_NEED_SPACES, arg[1]) | |
| 1541 #endif | |
| 1542 ) | |
| 1543 | |
| 1544 output_file = &arg[2]; | |
| 1545 break; | |
| 1546 | |
| 1547 case 'r': | |
| 1548 if (arg[2] == '\0') | |
| 1549 rflag = 1; | |
| 1550 break; | |
| 1551 | |
| 1552 case 's': | |
| 1553 if (arg[2] == '\0' && do_collecting) | |
| 1554 { | |
| 1555 /* We must strip after the nm run, otherwise C++ linking | |
| 1556 will not work. Thus we strip in the second ld run, or | |
| 1557 else with strip if there is no second ld run. */ | |
| 1558 strip_flag = 1; | |
| 1559 ld1--; | |
| 1560 } | |
| 1561 break; | |
| 1562 | |
| 1563 case 'v': | |
| 1564 if (arg[2] == '\0') | |
|
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|
1565 vflag = true; |
| 0 | 1566 break; |
| 1567 | |
| 1568 case '-': | |
| 1569 if (strcmp (arg, "--no-demangle") == 0) | |
| 1570 { | |
| 1571 demangle_flag = arg; | |
| 1572 no_demangle = 1; | |
| 1573 ld1--; | |
| 1574 ld2--; | |
| 1575 } | |
| 1576 else if (strncmp (arg, "--demangle", 10) == 0) | |
| 1577 { | |
| 1578 demangle_flag = arg; | |
| 1579 no_demangle = 0; | |
| 1580 #ifndef HAVE_LD_DEMANGLE | |
| 1581 if (arg[10] == '=') | |
| 1582 { | |
| 1583 enum demangling_styles style | |
| 1584 = cplus_demangle_name_to_style (arg+11); | |
| 1585 if (style == unknown_demangling) | |
| 1586 error ("unknown demangling style '%s'", arg+11); | |
| 1587 else | |
| 1588 current_demangling_style = style; | |
| 1589 } | |
| 1590 #endif | |
| 1591 ld1--; | |
| 1592 ld2--; | |
| 1593 } | |
|
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|
1594 else if (strncmp (arg, "--sysroot=", 10) == 0) |
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|
1595 target_system_root = arg + 10; |
|
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|
1596 else if (strncmp (arg, "--version", 9) == 0) |
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|
1597 vflag = true; |
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|
1598 else if (strncmp (arg, "--help", 9) == 0) |
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|
1599 helpflag = true; |
| 0 | 1600 break; |
| 1601 } | |
| 1602 } | |
| 1603 else if ((p = strrchr (arg, '.')) != (char *) 0 | |
| 1604 && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0 | |
| 1605 || strcmp (p, ".so") == 0 || strcmp (p, ".lo") == 0 | |
| 1606 || strcmp (p, ".obj") == 0)) | |
| 1607 { | |
| 1608 if (first_file) | |
| 1609 { | |
| 1610 first_file = 0; | |
| 1611 if (p[1] == 'o') | |
| 1612 *ld2++ = o_file; | |
| 1613 else | |
| 1614 { | |
| 1615 /* place o_file BEFORE this argument! */ | |
| 1616 ld2--; | |
| 1617 *ld2++ = o_file; | |
| 1618 *ld2++ = arg; | |
| 1619 } | |
| 1620 } | |
| 1621 if (p[1] == 'o' || p[1] == 'l') | |
| 1622 *object++ = arg; | |
| 1623 #ifdef COLLECT_EXPORT_LIST | |
| 1624 /* libraries can be specified directly, i.e. without -l flag. */ | |
| 1625 else | |
| 1626 { | |
| 1627 /* Saving a full library name. */ | |
| 1628 add_to_list (&libs, arg); | |
| 1629 } | |
| 1630 #endif | |
| 1631 } | |
| 1632 } | |
| 1633 | |
| 1634 #ifdef COLLECT_EXPORT_LIST | |
| 1635 /* This is added only for debugging purposes. */ | |
| 1636 if (debug) | |
| 1637 { | |
| 1638 fprintf (stderr, "List of libraries:\n"); | |
| 1639 dump_list (stderr, "\t", libs.first); | |
| 1640 } | |
| 1641 | |
| 1642 /* The AIX linker will discard static constructors in object files if | |
|
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|
1643 nothing else in the file is referenced, so look at them first. Unless |
|
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|
1644 we are building a shared object, ignore the eh frame tables, as we |
|
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|
1645 would otherwise reference them all, hence drag all the corresponding |
|
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|
1646 objects even if nothing else is referenced. */ |
| 0 | 1647 { |
|
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|
1648 const char **export_object_lst |
|
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|
1649 = CONST_CAST2 (const char **, char **, object_lst); |
|
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|
1650 |
| 0 | 1651 struct id *list = libs.first; |
| 1652 | |
|
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|
1653 /* Compute the filter to use from the current one, do scan, then adjust |
|
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|
1654 the "current" filter to remove what we just included here. This will |
|
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|
1655 control whether we need a first pass link later on or not, and what |
|
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|
1656 will remain to be scanned there. */ |
|
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|
1657 |
|
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|
1658 scanfilter this_filter = ld1_filter; |
|
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|
1659 #if HAVE_AS_REF |
|
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|
1660 if (!shared_obj) |
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|
1661 this_filter &= ~SCAN_DWEH; |
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|
1662 #endif |
|
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|
1663 |
|
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|
1664 while (export_object_lst < object) |
|
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|
1665 scan_prog_file (*export_object_lst++, PASS_OBJ, this_filter); |
|
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|
1666 |
| 0 | 1667 for (; list; list = list->next) |
|
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|
1668 scan_prog_file (list->name, PASS_FIRST, this_filter); |
|
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|
1669 |
|
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|
1670 ld1_filter = ld1_filter & ~this_filter; |
| 0 | 1671 } |
| 1672 | |
| 1673 if (exports.first) | |
| 1674 { | |
| 1675 char *buf = concat ("-bE:", export_file, NULL); | |
| 1676 | |
| 1677 *ld1++ = buf; | |
| 1678 *ld2++ = buf; | |
| 1679 | |
| 1680 exportf = fopen (export_file, "w"); | |
| 1681 if (exportf == (FILE *) 0) | |
| 1682 fatal_perror ("fopen %s", export_file); | |
| 1683 write_aix_file (exportf, exports.first); | |
| 1684 if (fclose (exportf)) | |
| 1685 fatal_perror ("fclose %s", export_file); | |
| 1686 } | |
| 1687 #endif | |
| 1688 | |
| 1689 *c_ptr++ = c_file; | |
| 1690 *c_ptr = *ld1 = *object = (char *) 0; | |
| 1691 | |
| 1692 if (vflag) | |
| 1693 { | |
| 1694 notice ("collect2 version %s", version_string); | |
| 1695 #ifdef TARGET_VERSION | |
| 1696 TARGET_VERSION; | |
| 1697 #endif | |
| 1698 fprintf (stderr, "\n"); | |
| 1699 } | |
| 1700 | |
|
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|
1701 if (helpflag) |
|
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|
1702 { |
|
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|
1703 fprintf (stderr, "Usage: collect2 [options]\n"); |
|
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|
1704 fprintf (stderr, " Wrap linker and generate constructor code if needed.\n"); |
|
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|
1705 fprintf (stderr, " Options:\n"); |
|
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|
1706 fprintf (stderr, " -debug Enable debug output\n"); |
|
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|
1707 fprintf (stderr, " --help Display this information\n"); |
|
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|
1708 fprintf (stderr, " -v, --version Display this program's version number\n"); |
|
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|
1709 fprintf (stderr, "Overview: http://gcc.gnu.org/onlinedocs/gccint/Collect2.html\n"); |
|
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|
1710 fprintf (stderr, "Report bugs: %s\n", bug_report_url); |
|
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|
1711 |
|
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|
1712 collect_exit (0); |
|
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|
1713 } |
|
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|
1714 |
| 0 | 1715 if (debug) |
| 1716 { | |
| 1717 const char *ptr; | |
| 1718 fprintf (stderr, "ld_file_name = %s\n", | |
| 1719 (ld_file_name ? ld_file_name : "not found")); | |
| 1720 fprintf (stderr, "c_file_name = %s\n", | |
| 1721 (c_file_name ? c_file_name : "not found")); | |
| 1722 fprintf (stderr, "nm_file_name = %s\n", | |
| 1723 (nm_file_name ? nm_file_name : "not found")); | |
| 1724 #ifdef LDD_SUFFIX | |
| 1725 fprintf (stderr, "ldd_file_name = %s\n", | |
| 1726 (ldd_file_name ? ldd_file_name : "not found")); | |
| 1727 #endif | |
| 1728 fprintf (stderr, "strip_file_name = %s\n", | |
| 1729 (strip_file_name ? strip_file_name : "not found")); | |
| 1730 fprintf (stderr, "c_file = %s\n", | |
| 1731 (c_file ? c_file : "not found")); | |
| 1732 fprintf (stderr, "o_file = %s\n", | |
| 1733 (o_file ? o_file : "not found")); | |
| 1734 | |
| 1735 ptr = getenv ("COLLECT_GCC_OPTIONS"); | |
| 1736 if (ptr) | |
| 1737 fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr); | |
| 1738 | |
| 1739 ptr = getenv ("COLLECT_GCC"); | |
| 1740 if (ptr) | |
| 1741 fprintf (stderr, "COLLECT_GCC = %s\n", ptr); | |
| 1742 | |
| 1743 ptr = getenv ("COMPILER_PATH"); | |
| 1744 if (ptr) | |
| 1745 fprintf (stderr, "COMPILER_PATH = %s\n", ptr); | |
| 1746 | |
| 1747 ptr = getenv (LIBRARY_PATH_ENV); | |
| 1748 if (ptr) | |
| 1749 fprintf (stderr, "%-20s= %s\n", LIBRARY_PATH_ENV, ptr); | |
| 1750 | |
| 1751 fprintf (stderr, "\n"); | |
| 1752 } | |
| 1753 | |
| 1754 /* Load the program, searching all libraries and attempting to provide | |
|
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|
1755 undefined symbols from repository information. |
|
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|
1756 |
|
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|
1757 If -r or they will be run via some other method, do not build the |
| 0 | 1758 constructor or destructor list, just return now. */ |
|
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|
1759 { |
|
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|
1760 bool early_exit |
|
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|
1761 = rflag || (! DO_COLLECT_EXPORT_LIST && ! do_collecting); |
|
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|
1762 |
|
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|
1763 /* Perform the first pass link now, if we're about to exit or if we need |
|
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|
1764 to scan for things we haven't collected yet before pursuing further. |
|
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|
1765 |
|
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|
1766 On AIX, the latter typically includes nothing for shared objects or |
|
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|
1767 frame tables for an executable, out of what the required early scan on |
|
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|
1768 objects and libraries has performed above. In the !shared_obj case, we |
|
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|
1769 expect the relevant tables to be dragged together with their associated |
|
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|
1770 functions from precise cross reference insertions by the compiler. */ |
|
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|
1771 |
|
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|
1772 if (early_exit || ld1_filter != SCAN_NOTHING) |
| 0 | 1773 do_tlink (ld1_argv, object_lst); |
| 1774 | |
|
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|
1775 if (early_exit) |
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1776 { |
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1777 #ifdef COLLECT_EXPORT_LIST |
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1778 /* Make sure we delete the export file we may have created. */ |
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1779 if (export_file != 0 && export_file[0]) |
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1780 maybe_unlink (export_file); |
| 0 | 1781 #endif |
|
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1782 if (lto_mode != LTO_MODE_NONE) |
|
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1783 maybe_run_lto_and_relink (ld1_argv, object_lst, object, false); |
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1784 |
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1785 maybe_unlink (c_file); |
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1786 maybe_unlink (o_file); |
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1787 return 0; |
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1788 } |
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1789 } |
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1790 |
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1791 /* Unless we have done it all already, examine the namelist and search for |
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1792 static constructors and destructors to call. Write the constructor and |
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1793 destructor tables to a .s file and reload. */ |
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1794 |
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1795 if (ld1_filter != SCAN_NOTHING) |
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1796 scan_prog_file (output_file, PASS_FIRST, ld1_filter); |
| 0 | 1797 |
| 1798 #ifdef SCAN_LIBRARIES | |
| 1799 scan_libraries (output_file); | |
| 1800 #endif | |
| 1801 | |
| 1802 if (debug) | |
| 1803 { | |
|
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1804 notice_translated (ngettext ("%d constructor found\n", |
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1805 "%d constructors found\n", |
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1806 constructors.number), |
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1807 constructors.number); |
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1808 notice_translated (ngettext ("%d destructor found\n", |
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1809 "%d destructors found\n", |
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1810 destructors.number), |
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1811 destructors.number); |
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1812 notice_translated (ngettext("%d frame table found\n", |
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1813 "%d frame tables found\n", |
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1814 frame_tables.number), |
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1815 frame_tables.number); |
| 0 | 1816 } |
| 1817 | |
|
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1818 /* If the scan exposed nothing of special interest, there's no need to |
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1819 generate the glue code and relink so return now. */ |
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1820 |
| 0 | 1821 if (constructors.number == 0 && destructors.number == 0 |
| 1822 && frame_tables.number == 0 | |
| 1823 #if defined (SCAN_LIBRARIES) || defined (COLLECT_EXPORT_LIST) | |
| 1824 /* If we will be running these functions ourselves, we want to emit | |
| 1825 stubs into the shared library so that we do not have to relink | |
| 1826 dependent programs when we add static objects. */ | |
| 1827 && ! shared_obj | |
| 1828 #endif | |
| 1829 ) | |
| 1830 { | |
|
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1831 /* Do tlink without additional code generation now if we didn't |
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1832 do it earlier for scanning purposes. */ |
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1833 if (ld1_filter == SCAN_NOTHING) |
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1834 do_tlink (ld1_argv, object_lst); |
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1835 |
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1836 if (lto_mode) |
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1837 maybe_run_lto_and_relink (ld1_argv, object_lst, object, false); |
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1838 |
| 0 | 1839 /* Strip now if it was requested on the command line. */ |
| 1840 if (strip_flag) | |
| 1841 { | |
| 1842 char **real_strip_argv = XCNEWVEC (char *, 3); | |
|
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1843 const char ** strip_argv = CONST_CAST2 (const char **, char **, |
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1844 real_strip_argv); |
| 0 | 1845 |
| 1846 strip_argv[0] = strip_file_name; | |
| 1847 strip_argv[1] = output_file; | |
| 1848 strip_argv[2] = (char *) 0; | |
| 1849 fork_execute ("strip", real_strip_argv); | |
| 1850 } | |
| 1851 | |
| 1852 #ifdef COLLECT_EXPORT_LIST | |
| 1853 maybe_unlink (export_file); | |
| 1854 #endif | |
| 1855 maybe_unlink (c_file); | |
| 1856 maybe_unlink (o_file); | |
| 1857 return 0; | |
| 1858 } | |
| 1859 | |
| 1860 /* Sort ctor and dtor lists by priority. */ | |
| 1861 sort_ids (&constructors); | |
| 1862 sort_ids (&destructors); | |
| 1863 | |
| 1864 maybe_unlink(output_file); | |
| 1865 outf = fopen (c_file, "w"); | |
| 1866 if (outf == (FILE *) 0) | |
| 1867 fatal_perror ("fopen %s", c_file); | |
| 1868 | |
| 1869 write_c_file (outf, c_file); | |
| 1870 | |
| 1871 if (fclose (outf)) | |
| 1872 fatal_perror ("fclose %s", c_file); | |
| 1873 | |
| 1874 /* Tell the linker that we have initializer and finalizer functions. */ | |
| 1875 #ifdef LD_INIT_SWITCH | |
| 1876 #ifdef COLLECT_EXPORT_LIST | |
| 1877 *ld2++ = concat (LD_INIT_SWITCH, ":", initname, ":", fininame, NULL); | |
| 1878 #else | |
| 1879 *ld2++ = LD_INIT_SWITCH; | |
| 1880 *ld2++ = initname; | |
| 1881 *ld2++ = LD_FINI_SWITCH; | |
| 1882 *ld2++ = fininame; | |
| 1883 #endif | |
| 1884 #endif | |
| 1885 | |
| 1886 #ifdef COLLECT_EXPORT_LIST | |
| 1887 if (shared_obj) | |
| 1888 { | |
| 1889 /* If we did not add export flag to link arguments before, add it to | |
| 1890 second link phase now. No new exports should have been added. */ | |
| 1891 if (! exports.first) | |
| 1892 *ld2++ = concat ("-bE:", export_file, NULL); | |
| 1893 | |
| 1894 #ifndef LD_INIT_SWITCH | |
| 1895 add_to_list (&exports, initname); | |
| 1896 add_to_list (&exports, fininame); | |
| 1897 add_to_list (&exports, "_GLOBAL__DI"); | |
| 1898 add_to_list (&exports, "_GLOBAL__DD"); | |
| 1899 #endif | |
| 1900 exportf = fopen (export_file, "w"); | |
| 1901 if (exportf == (FILE *) 0) | |
| 1902 fatal_perror ("fopen %s", export_file); | |
| 1903 write_aix_file (exportf, exports.first); | |
| 1904 if (fclose (exportf)) | |
| 1905 fatal_perror ("fclose %s", export_file); | |
| 1906 } | |
| 1907 #endif | |
| 1908 | |
| 1909 /* End of arguments to second link phase. */ | |
| 1910 *ld2 = (char*) 0; | |
| 1911 | |
| 1912 if (debug) | |
| 1913 { | |
| 1914 fprintf (stderr, "\n========== output_file = %s, c_file = %s\n", | |
| 1915 output_file, c_file); | |
| 1916 write_c_file (stderr, "stderr"); | |
| 1917 fprintf (stderr, "========== end of c_file\n\n"); | |
| 1918 #ifdef COLLECT_EXPORT_LIST | |
| 1919 fprintf (stderr, "\n========== export_file = %s\n", export_file); | |
| 1920 write_aix_file (stderr, exports.first); | |
| 1921 fprintf (stderr, "========== end of export_file\n\n"); | |
| 1922 #endif | |
| 1923 } | |
| 1924 | |
| 1925 /* Assemble the constructor and destructor tables. | |
| 1926 Link the tables in with the rest of the program. */ | |
| 1927 | |
| 1928 fork_execute ("gcc", c_argv); | |
| 1929 #ifdef COLLECT_EXPORT_LIST | |
| 1930 /* On AIX we must call tlink because of possible templates resolution. */ | |
| 1931 do_tlink (ld2_argv, object_lst); | |
|
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1932 |
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1933 if (lto_mode) |
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1934 maybe_run_lto_and_relink (ld2_argv, object_lst, object, false); |
| 0 | 1935 #else |
| 1936 /* Otherwise, simply call ld because tlink is already done. */ | |
|
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1937 if (lto_mode) |
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1938 maybe_run_lto_and_relink (ld2_argv, object_lst, object, true); |
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1939 else |
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1940 fork_execute ("ld", ld2_argv); |
| 0 | 1941 |
| 1942 /* Let scan_prog_file do any final mods (OSF/rose needs this for | |
| 1943 constructors/destructors in shared libraries. */ | |
|
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1944 scan_prog_file (output_file, PASS_SECOND, SCAN_ALL); |
| 0 | 1945 #endif |
| 1946 | |
| 1947 maybe_unlink (c_file); | |
| 1948 maybe_unlink (o_file); | |
| 1949 | |
| 1950 #ifdef COLLECT_EXPORT_LIST | |
| 1951 maybe_unlink (export_file); | |
| 1952 #endif | |
| 1953 | |
| 1954 return 0; | |
| 1955 } | |
| 1956 | |
| 1957 | |
| 1958 /* Wait for a process to finish, and exit if a nonzero status is found. */ | |
| 1959 | |
| 1960 int | |
| 1961 collect_wait (const char *prog, struct pex_obj *pex) | |
| 1962 { | |
| 1963 int status; | |
| 1964 | |
| 1965 if (!pex_get_status (pex, 1, &status)) | |
| 1966 fatal_perror ("can't get program status"); | |
| 1967 pex_free (pex); | |
| 1968 | |
| 1969 if (status) | |
| 1970 { | |
| 1971 if (WIFSIGNALED (status)) | |
| 1972 { | |
| 1973 int sig = WTERMSIG (status); | |
| 1974 error ("%s terminated with signal %d [%s]%s", | |
| 1975 prog, sig, strsignal(sig), | |
| 1976 WCOREDUMP(status) ? ", core dumped" : ""); | |
| 1977 collect_exit (FATAL_EXIT_CODE); | |
| 1978 } | |
| 1979 | |
| 1980 if (WIFEXITED (status)) | |
| 1981 return WEXITSTATUS (status); | |
| 1982 } | |
| 1983 return 0; | |
| 1984 } | |
| 1985 | |
| 1986 static void | |
| 1987 do_wait (const char *prog, struct pex_obj *pex) | |
| 1988 { | |
| 1989 int ret = collect_wait (prog, pex); | |
| 1990 if (ret != 0) | |
| 1991 { | |
| 1992 error ("%s returned %d exit status", prog, ret); | |
| 1993 collect_exit (ret); | |
| 1994 } | |
| 1995 | |
| 1996 if (response_file) | |
| 1997 { | |
| 1998 unlink (response_file); | |
| 1999 response_file = NULL; | |
| 2000 } | |
| 2001 } | |
| 2002 | |
| 2003 | |
| 2004 /* Execute a program, and wait for the reply. */ | |
| 2005 | |
| 2006 struct pex_obj * | |
| 2007 collect_execute (const char *prog, char **argv, const char *outname, | |
|
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2008 const char *errname, int flags) |
| 0 | 2009 { |
| 2010 struct pex_obj *pex; | |
| 2011 const char *errmsg; | |
| 2012 int err; | |
| 2013 char *response_arg = NULL; | |
| 2014 char *response_argv[3] ATTRIBUTE_UNUSED; | |
| 2015 | |
| 2016 if (HAVE_GNU_LD && at_file_supplied && argv[0] != NULL) | |
| 2017 { | |
| 2018 /* If using @file arguments, create a temporary file and put the | |
| 2019 contents of argv into it. Then change argv to an array corresponding | |
| 2020 to a single argument @FILE, where FILE is the temporary filename. */ | |
| 2021 | |
| 2022 char **current_argv = argv + 1; | |
| 2023 char *argv0 = argv[0]; | |
| 2024 int status; | |
| 2025 FILE *f; | |
| 2026 | |
| 2027 /* Note: we assume argv contains at least one element; this is | |
| 2028 checked above. */ | |
| 2029 | |
| 2030 response_file = make_temp_file (""); | |
| 2031 | |
| 2032 f = fopen (response_file, "w"); | |
| 2033 | |
| 2034 if (f == NULL) | |
| 2035 fatal ("could not open response file %s", response_file); | |
| 2036 | |
| 2037 status = writeargv (current_argv, f); | |
| 2038 | |
| 2039 if (status) | |
| 2040 fatal ("could not write to response file %s", response_file); | |
| 2041 | |
| 2042 status = fclose (f); | |
| 2043 | |
| 2044 if (EOF == status) | |
| 2045 fatal ("could not close response file %s", response_file); | |
| 2046 | |
| 2047 response_arg = concat ("@", response_file, NULL); | |
| 2048 response_argv[0] = argv0; | |
| 2049 response_argv[1] = response_arg; | |
| 2050 response_argv[2] = NULL; | |
| 2051 | |
| 2052 argv = response_argv; | |
| 2053 } | |
| 2054 | |
| 2055 if (vflag || debug) | |
| 2056 { | |
| 2057 char **p_argv; | |
| 2058 const char *str; | |
| 2059 | |
| 2060 if (argv[0]) | |
| 2061 fprintf (stderr, "%s", argv[0]); | |
| 2062 else | |
| 2063 notice ("[cannot find %s]", prog); | |
| 2064 | |
| 2065 for (p_argv = &argv[1]; (str = *p_argv) != (char *) 0; p_argv++) | |
| 2066 fprintf (stderr, " %s", str); | |
| 2067 | |
| 2068 fprintf (stderr, "\n"); | |
| 2069 } | |
| 2070 | |
| 2071 fflush (stdout); | |
| 2072 fflush (stderr); | |
| 2073 | |
| 2074 /* If we cannot find a program we need, complain error. Do this here | |
| 2075 since we might not end up needing something that we could not find. */ | |
| 2076 | |
| 2077 if (argv[0] == 0) | |
| 2078 fatal ("cannot find '%s'", prog); | |
| 2079 | |
| 2080 pex = pex_init (0, "collect2", NULL); | |
| 2081 if (pex == NULL) | |
| 2082 fatal_perror ("pex_init failed"); | |
| 2083 | |
|
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2084 errmsg = pex_run (pex, flags, argv[0], argv, outname, |
| 0 | 2085 errname, &err); |
| 2086 if (errmsg != NULL) | |
| 2087 { | |
| 2088 if (err != 0) | |
| 2089 { | |
| 2090 errno = err; | |
| 2091 fatal_perror (errmsg); | |
| 2092 } | |
| 2093 else | |
| 2094 fatal (errmsg); | |
| 2095 } | |
| 2096 | |
| 2097 if (response_arg) | |
| 2098 free (response_arg); | |
| 2099 | |
| 2100 return pex; | |
| 2101 } | |
| 2102 | |
| 2103 static void | |
| 2104 fork_execute (const char *prog, char **argv) | |
| 2105 { | |
| 2106 struct pex_obj *pex; | |
| 2107 | |
|
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2108 pex = collect_execute (prog, argv, NULL, NULL, PEX_LAST | PEX_SEARCH); |
| 0 | 2109 do_wait (prog, pex); |
| 2110 } | |
| 2111 | |
| 2112 /* Unlink a file unless we are debugging. */ | |
| 2113 | |
| 2114 static void | |
| 2115 maybe_unlink (const char *file) | |
| 2116 { | |
| 2117 if (!debug) | |
| 2118 unlink_if_ordinary (file); | |
| 2119 else | |
| 2120 notice ("[Leaving %s]\n", file); | |
| 2121 } | |
| 2122 | |
|
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2123 /* Call maybe_unlink on the NULL-terminated list, FILE_LIST. */ |
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2124 |
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2125 static void |
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2126 maybe_unlink_list (char **file_list) |
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2127 { |
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2128 char **tmp = file_list; |
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2129 |
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2130 while (*tmp) |
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2131 maybe_unlink (*(tmp++)); |
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2132 } |
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2133 |
| 0 | 2134 |
| 2135 static long sequence_number = 0; | |
| 2136 | |
| 2137 /* Add a name to a linked list. */ | |
| 2138 | |
| 2139 static void | |
| 2140 add_to_list (struct head *head_ptr, const char *name) | |
| 2141 { | |
| 2142 struct id *newid | |
| 2143 = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1); | |
| 2144 struct id *p; | |
| 2145 strcpy (newid->name, name); | |
| 2146 | |
| 2147 if (head_ptr->first) | |
| 2148 head_ptr->last->next = newid; | |
| 2149 else | |
| 2150 head_ptr->first = newid; | |
| 2151 | |
| 2152 /* Check for duplicate symbols. */ | |
| 2153 for (p = head_ptr->first; | |
| 2154 strcmp (name, p->name) != 0; | |
| 2155 p = p->next) | |
| 2156 ; | |
| 2157 if (p != newid) | |
| 2158 { | |
| 2159 head_ptr->last->next = 0; | |
| 2160 free (newid); | |
| 2161 return; | |
| 2162 } | |
| 2163 | |
| 2164 newid->sequence = ++sequence_number; | |
| 2165 head_ptr->last = newid; | |
| 2166 head_ptr->number++; | |
| 2167 } | |
| 2168 | |
| 2169 /* Grab the init priority number from an init function name that | |
| 2170 looks like "_GLOBAL_.I.12345.foo". */ | |
| 2171 | |
| 2172 static int | |
| 2173 extract_init_priority (const char *name) | |
| 2174 { | |
| 2175 int pos = 0, pri; | |
| 2176 | |
| 2177 while (name[pos] == '_') | |
| 2178 ++pos; | |
| 2179 pos += 10; /* strlen ("GLOBAL__X_") */ | |
| 2180 | |
| 2181 /* Extract init_p number from ctor/dtor name. */ | |
| 2182 pri = atoi (name + pos); | |
| 2183 return pri ? pri : DEFAULT_INIT_PRIORITY; | |
| 2184 } | |
| 2185 | |
| 2186 /* Insertion sort the ids from ctor/dtor list HEAD_PTR in descending order. | |
| 2187 ctors will be run from right to left, dtors from left to right. */ | |
| 2188 | |
| 2189 static void | |
| 2190 sort_ids (struct head *head_ptr) | |
| 2191 { | |
| 2192 /* id holds the current element to insert. id_next holds the next | |
| 2193 element to insert. id_ptr iterates through the already sorted elements | |
| 2194 looking for the place to insert id. */ | |
| 2195 struct id *id, *id_next, **id_ptr; | |
| 2196 | |
| 2197 id = head_ptr->first; | |
| 2198 | |
| 2199 /* We don't have any sorted elements yet. */ | |
| 2200 head_ptr->first = NULL; | |
| 2201 | |
| 2202 for (; id; id = id_next) | |
| 2203 { | |
| 2204 id_next = id->next; | |
| 2205 id->sequence = extract_init_priority (id->name); | |
| 2206 | |
| 2207 for (id_ptr = &(head_ptr->first); ; id_ptr = &((*id_ptr)->next)) | |
| 2208 if (*id_ptr == NULL | |
| 2209 /* If the sequence numbers are the same, we put the id from the | |
| 2210 file later on the command line later in the list. */ | |
| 2211 || id->sequence > (*id_ptr)->sequence | |
| 2212 /* Hack: do lexical compare, too. | |
| 2213 || (id->sequence == (*id_ptr)->sequence | |
| 2214 && strcmp (id->name, (*id_ptr)->name) > 0) */ | |
| 2215 ) | |
| 2216 { | |
| 2217 id->next = *id_ptr; | |
| 2218 *id_ptr = id; | |
| 2219 break; | |
| 2220 } | |
| 2221 } | |
| 2222 | |
| 2223 /* Now set the sequence numbers properly so write_c_file works. */ | |
| 2224 for (id = head_ptr->first; id; id = id->next) | |
| 2225 id->sequence = ++sequence_number; | |
| 2226 } | |
| 2227 | |
| 2228 /* Write: `prefix', the names on list LIST, `suffix'. */ | |
| 2229 | |
| 2230 static void | |
| 2231 write_list (FILE *stream, const char *prefix, struct id *list) | |
| 2232 { | |
| 2233 while (list) | |
| 2234 { | |
| 2235 fprintf (stream, "%sx%d,\n", prefix, list->sequence); | |
| 2236 list = list->next; | |
| 2237 } | |
| 2238 } | |
| 2239 | |
| 2240 #if LINK_ELIMINATE_DUPLICATE_LDIRECTORIES | |
| 2241 /* Given a STRING, return nonzero if it occurs in the list in range | |
| 2242 [ARGS_BEGIN,ARGS_END). */ | |
| 2243 | |
| 2244 static int | |
| 2245 is_in_args (const char *string, const char **args_begin, | |
| 2246 const char **args_end) | |
| 2247 { | |
| 2248 const char **args_pointer; | |
| 2249 for (args_pointer = args_begin; args_pointer != args_end; ++args_pointer) | |
| 2250 if (strcmp (string, *args_pointer) == 0) | |
| 2251 return 1; | |
| 2252 return 0; | |
| 2253 } | |
| 2254 #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */ | |
| 2255 | |
| 2256 #ifdef COLLECT_EXPORT_LIST | |
| 2257 /* This function is really used only on AIX, but may be useful. */ | |
| 2258 #if 0 | |
| 2259 static int | |
| 2260 is_in_list (const char *prefix, struct id *list) | |
| 2261 { | |
| 2262 while (list) | |
| 2263 { | |
| 2264 if (!strcmp (prefix, list->name)) return 1; | |
| 2265 list = list->next; | |
| 2266 } | |
| 2267 return 0; | |
| 2268 } | |
| 2269 #endif | |
| 2270 #endif /* COLLECT_EXPORT_LIST */ | |
| 2271 | |
| 2272 /* Added for debugging purpose. */ | |
| 2273 #ifdef COLLECT_EXPORT_LIST | |
| 2274 static void | |
| 2275 dump_list (FILE *stream, const char *prefix, struct id *list) | |
| 2276 { | |
| 2277 while (list) | |
| 2278 { | |
| 2279 fprintf (stream, "%s%s,\n", prefix, list->name); | |
| 2280 list = list->next; | |
| 2281 } | |
| 2282 } | |
| 2283 #endif | |
| 2284 | |
| 2285 #if 0 | |
| 2286 static void | |
| 2287 dump_prefix_list (FILE *stream, const char *prefix, struct prefix_list *list) | |
| 2288 { | |
| 2289 while (list) | |
| 2290 { | |
| 2291 fprintf (stream, "%s%s,\n", prefix, list->prefix); | |
| 2292 list = list->next; | |
| 2293 } | |
| 2294 } | |
| 2295 #endif | |
| 2296 | |
| 2297 static void | |
| 2298 write_list_with_asm (FILE *stream, const char *prefix, struct id *list) | |
| 2299 { | |
| 2300 while (list) | |
| 2301 { | |
| 2302 fprintf (stream, "%sx%d __asm__ (\"%s\");\n", | |
| 2303 prefix, list->sequence, list->name); | |
| 2304 list = list->next; | |
| 2305 } | |
| 2306 } | |
| 2307 | |
| 2308 /* Write out the constructor and destructor tables statically (for a shared | |
| 2309 object), along with the functions to execute them. */ | |
| 2310 | |
| 2311 static void | |
| 2312 write_c_file_stat (FILE *stream, const char *name ATTRIBUTE_UNUSED) | |
| 2313 { | |
| 2314 const char *p, *q; | |
| 2315 char *prefix, *r; | |
| 2316 int frames = (frame_tables.number > 0); | |
| 2317 | |
| 2318 /* Figure out name of output_file, stripping off .so version. */ | |
| 2319 p = strrchr (output_file, '/'); | |
| 2320 if (p == 0) | |
| 2321 p = output_file; | |
| 2322 else | |
| 2323 p++; | |
| 2324 q = p; | |
| 2325 while (q) | |
| 2326 { | |
| 2327 q = strchr (q,'.'); | |
| 2328 if (q == 0) | |
| 2329 { | |
| 2330 q = p + strlen (p); | |
| 2331 break; | |
| 2332 } | |
| 2333 else | |
| 2334 { | |
| 2335 if (strncmp (q, SHLIB_SUFFIX, strlen (SHLIB_SUFFIX)) == 0) | |
| 2336 { | |
| 2337 q += strlen (SHLIB_SUFFIX); | |
| 2338 break; | |
| 2339 } | |
| 2340 else | |
| 2341 q++; | |
| 2342 } | |
| 2343 } | |
| 2344 /* q points to null at end of the string (or . of the .so version) */ | |
| 2345 prefix = XNEWVEC (char, q - p + 1); | |
| 2346 strncpy (prefix, p, q - p); | |
| 2347 prefix[q - p] = 0; | |
| 2348 for (r = prefix; *r; r++) | |
| 2349 if (!ISALNUM ((unsigned char)*r)) | |
| 2350 *r = '_'; | |
| 2351 if (debug) | |
| 2352 notice ("\nwrite_c_file - output name is %s, prefix is %s\n", | |
| 2353 output_file, prefix); | |
| 2354 | |
| 2355 initname = concat ("_GLOBAL__FI_", prefix, NULL); | |
| 2356 fininame = concat ("_GLOBAL__FD_", prefix, NULL); | |
| 2357 | |
| 2358 free (prefix); | |
| 2359 | |
| 2360 /* Write the tables as C code. */ | |
| 2361 | |
| 2362 fprintf (stream, "static int count;\n"); | |
| 2363 fprintf (stream, "typedef void entry_pt();\n"); | |
| 2364 write_list_with_asm (stream, "extern entry_pt ", constructors.first); | |
| 2365 | |
| 2366 if (frames) | |
| 2367 { | |
| 2368 write_list_with_asm (stream, "extern void *", frame_tables.first); | |
| 2369 | |
| 2370 fprintf (stream, "\tstatic void *frame_table[] = {\n"); | |
| 2371 write_list (stream, "\t\t&", frame_tables.first); | |
| 2372 fprintf (stream, "\t0\n};\n"); | |
| 2373 | |
| 2374 /* This must match what's in frame.h. */ | |
| 2375 fprintf (stream, "struct object {\n"); | |
| 2376 fprintf (stream, " void *pc_begin;\n"); | |
| 2377 fprintf (stream, " void *pc_end;\n"); | |
| 2378 fprintf (stream, " void *fde_begin;\n"); | |
| 2379 fprintf (stream, " void *fde_array;\n"); | |
| 2380 fprintf (stream, " __SIZE_TYPE__ count;\n"); | |
| 2381 fprintf (stream, " struct object *next;\n"); | |
| 2382 fprintf (stream, "};\n"); | |
| 2383 | |
| 2384 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n"); | |
| 2385 fprintf (stream, "extern void *__deregister_frame_info (void *);\n"); | |
| 2386 | |
| 2387 fprintf (stream, "static void reg_frame () {\n"); | |
| 2388 fprintf (stream, "\tstatic struct object ob;\n"); | |
| 2389 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n"); | |
| 2390 fprintf (stream, "\t}\n"); | |
| 2391 | |
| 2392 fprintf (stream, "static void dereg_frame () {\n"); | |
| 2393 fprintf (stream, "\t__deregister_frame_info (frame_table);\n"); | |
| 2394 fprintf (stream, "\t}\n"); | |
| 2395 } | |
| 2396 | |
| 2397 fprintf (stream, "void %s() {\n", initname); | |
| 2398 if (constructors.number > 0 || frames) | |
| 2399 { | |
| 2400 fprintf (stream, "\tstatic entry_pt *ctors[] = {\n"); | |
| 2401 write_list (stream, "\t\t", constructors.first); | |
| 2402 if (frames) | |
| 2403 fprintf (stream, "\treg_frame,\n"); | |
| 2404 fprintf (stream, "\t};\n"); | |
| 2405 fprintf (stream, "\tentry_pt **p;\n"); | |
| 2406 fprintf (stream, "\tif (count++ != 0) return;\n"); | |
| 2407 fprintf (stream, "\tp = ctors + %d;\n", constructors.number + frames); | |
| 2408 fprintf (stream, "\twhile (p > ctors) (*--p)();\n"); | |
| 2409 } | |
| 2410 else | |
| 2411 fprintf (stream, "\t++count;\n"); | |
| 2412 fprintf (stream, "}\n"); | |
| 2413 write_list_with_asm (stream, "extern entry_pt ", destructors.first); | |
| 2414 fprintf (stream, "void %s() {\n", fininame); | |
| 2415 if (destructors.number > 0 || frames) | |
| 2416 { | |
| 2417 fprintf (stream, "\tstatic entry_pt *dtors[] = {\n"); | |
| 2418 write_list (stream, "\t\t", destructors.first); | |
| 2419 if (frames) | |
| 2420 fprintf (stream, "\tdereg_frame,\n"); | |
| 2421 fprintf (stream, "\t};\n"); | |
| 2422 fprintf (stream, "\tentry_pt **p;\n"); | |
| 2423 fprintf (stream, "\tif (--count != 0) return;\n"); | |
| 2424 fprintf (stream, "\tp = dtors;\n"); | |
| 2425 fprintf (stream, "\twhile (p < dtors + %d) (*p++)();\n", | |
| 2426 destructors.number + frames); | |
| 2427 } | |
| 2428 fprintf (stream, "}\n"); | |
| 2429 | |
| 2430 if (shared_obj) | |
| 2431 { | |
| 2432 COLLECT_SHARED_INIT_FUNC(stream, initname); | |
| 2433 COLLECT_SHARED_FINI_FUNC(stream, fininame); | |
| 2434 } | |
| 2435 } | |
| 2436 | |
| 2437 /* Write the constructor/destructor tables. */ | |
| 2438 | |
| 2439 #ifndef LD_INIT_SWITCH | |
| 2440 static void | |
| 2441 write_c_file_glob (FILE *stream, const char *name ATTRIBUTE_UNUSED) | |
| 2442 { | |
| 2443 /* Write the tables as C code. */ | |
| 2444 | |
| 2445 int frames = (frame_tables.number > 0); | |
| 2446 | |
| 2447 fprintf (stream, "typedef void entry_pt();\n\n"); | |
| 2448 | |
| 2449 write_list_with_asm (stream, "extern entry_pt ", constructors.first); | |
| 2450 | |
| 2451 if (frames) | |
| 2452 { | |
| 2453 write_list_with_asm (stream, "extern void *", frame_tables.first); | |
| 2454 | |
| 2455 fprintf (stream, "\tstatic void *frame_table[] = {\n"); | |
| 2456 write_list (stream, "\t\t&", frame_tables.first); | |
| 2457 fprintf (stream, "\t0\n};\n"); | |
| 2458 | |
| 2459 /* This must match what's in frame.h. */ | |
| 2460 fprintf (stream, "struct object {\n"); | |
| 2461 fprintf (stream, " void *pc_begin;\n"); | |
| 2462 fprintf (stream, " void *pc_end;\n"); | |
| 2463 fprintf (stream, " void *fde_begin;\n"); | |
| 2464 fprintf (stream, " void *fde_array;\n"); | |
| 2465 fprintf (stream, " __SIZE_TYPE__ count;\n"); | |
| 2466 fprintf (stream, " struct object *next;\n"); | |
| 2467 fprintf (stream, "};\n"); | |
| 2468 | |
| 2469 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n"); | |
| 2470 fprintf (stream, "extern void *__deregister_frame_info (void *);\n"); | |
| 2471 | |
| 2472 fprintf (stream, "static void reg_frame () {\n"); | |
| 2473 fprintf (stream, "\tstatic struct object ob;\n"); | |
| 2474 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n"); | |
| 2475 fprintf (stream, "\t}\n"); | |
| 2476 | |
| 2477 fprintf (stream, "static void dereg_frame () {\n"); | |
| 2478 fprintf (stream, "\t__deregister_frame_info (frame_table);\n"); | |
| 2479 fprintf (stream, "\t}\n"); | |
| 2480 } | |
| 2481 | |
| 2482 fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n"); | |
| 2483 fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number + frames); | |
| 2484 write_list (stream, "\t", constructors.first); | |
| 2485 if (frames) | |
| 2486 fprintf (stream, "\treg_frame,\n"); | |
| 2487 fprintf (stream, "\t0\n};\n\n"); | |
| 2488 | |
| 2489 write_list_with_asm (stream, "extern entry_pt ", destructors.first); | |
| 2490 | |
| 2491 fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n"); | |
| 2492 fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number + frames); | |
| 2493 write_list (stream, "\t", destructors.first); | |
| 2494 if (frames) | |
| 2495 fprintf (stream, "\tdereg_frame,\n"); | |
| 2496 fprintf (stream, "\t0\n};\n\n"); | |
| 2497 | |
| 2498 fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN); | |
| 2499 fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN); | |
| 2500 } | |
| 2501 #endif /* ! LD_INIT_SWITCH */ | |
| 2502 | |
| 2503 static void | |
| 2504 write_c_file (FILE *stream, const char *name) | |
| 2505 { | |
| 2506 #ifndef LD_INIT_SWITCH | |
| 2507 if (! shared_obj) | |
| 2508 write_c_file_glob (stream, name); | |
| 2509 else | |
| 2510 #endif | |
| 2511 write_c_file_stat (stream, name); | |
| 2512 } | |
| 2513 | |
| 2514 #ifdef COLLECT_EXPORT_LIST | |
| 2515 static void | |
| 2516 write_aix_file (FILE *stream, struct id *list) | |
| 2517 { | |
| 2518 for (; list; list = list->next) | |
| 2519 { | |
| 2520 fputs (list->name, stream); | |
| 2521 putc ('\n', stream); | |
| 2522 } | |
| 2523 } | |
| 2524 #endif | |
| 2525 | |
| 2526 #ifdef OBJECT_FORMAT_NONE | |
| 2527 | |
|
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2528 /* Check to make sure the file is an LTO object file. */ |
|
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2529 |
|
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2530 static bool |
|
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|
2531 maybe_lto_object_file (const char *prog_name) |
|
55
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2532 { |
|
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2533 FILE *f; |
|
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2534 unsigned char buf[4]; |
|
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|
2535 int i; |
|
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2536 |
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2537 static unsigned char elfmagic[4] = { 0x7f, 'E', 'L', 'F' }; |
|
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|
2538 static unsigned char coffmagic[2] = { 0x4c, 0x01 }; |
|
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2539 static unsigned char coffmagic_x64[2] = { 0x64, 0x86 }; |
|
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|
2540 static unsigned char machomagic[4][4] = { |
|
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2541 { 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
|
2542 { 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
|
2543 { 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
|
2544 { 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
|
2545 }; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2546 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2547 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
|
2548 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
|
2549 return false; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2550 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
|
2551 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
|
2552 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
|
2553 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2554 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
|
2555 || 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
|
2556 || 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
|
2557 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
|
2558 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
|
2559 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
|
2560 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
|
2561 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2562 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
|
2563 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2564 |
| 0 | 2565 /* 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
|
2566 the symbols g++ uses for static constructors and destructors. */ |
| 0 | 2567 |
| 2568 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
|
2569 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
|
2570 scanfilter filter) |
| 0 | 2571 { |
| 2572 void (*int_handler) (int); | |
| 2573 #ifdef SIGQUIT | |
| 2574 void (*quit_handler) (int); | |
| 2575 #endif | |
| 2576 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
|
2577 const char **nm_argv = CONST_CAST2 (const char **, char**, real_nm_argv); |
| 0 | 2578 int argc = 0; |
| 2579 struct pex_obj *pex; | |
| 2580 const char *errmsg; | |
| 2581 int err; | |
| 2582 char *p, buf[1024]; | |
| 2583 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
|
2584 int found_lto = 0; |
| 0 | 2585 |
| 2586 if (which_pass == PASS_SECOND) | |
| 2587 return; | |
| 2588 | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2589 /* 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
|
2590 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
|
2591 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
|
2592 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
|
2593 return; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2594 |
| 0 | 2595 /* If we do not have an `nm', complain. */ |
| 2596 if (nm_file_name == 0) | |
| 2597 fatal ("cannot find 'nm'"); | |
| 2598 | |
| 2599 nm_argv[argc++] = nm_file_name; | |
| 2600 if (NM_FLAGS[0] != '\0') | |
| 2601 nm_argv[argc++] = NM_FLAGS; | |
| 2602 | |
| 2603 nm_argv[argc++] = prog_name; | |
| 2604 nm_argv[argc++] = (char *) 0; | |
| 2605 | |
| 2606 /* Trace if needed. */ | |
| 2607 if (vflag) | |
| 2608 { | |
| 2609 const char **p_argv; | |
| 2610 const char *str; | |
| 2611 | |
| 2612 for (p_argv = &nm_argv[0]; (str = *p_argv) != (char *) 0; p_argv++) | |
| 2613 fprintf (stderr, " %s", str); | |
| 2614 | |
| 2615 fprintf (stderr, "\n"); | |
| 2616 } | |
| 2617 | |
| 2618 fflush (stdout); | |
| 2619 fflush (stderr); | |
| 2620 | |
| 2621 pex = pex_init (PEX_USE_PIPES, "collect2", NULL); | |
| 2622 if (pex == NULL) | |
| 2623 fatal_perror ("pex_init failed"); | |
| 2624 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2625 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
|
2626 &err); |
| 0 | 2627 if (errmsg != NULL) |
| 2628 { | |
| 2629 if (err != 0) | |
| 2630 { | |
| 2631 errno = err; | |
| 2632 fatal_perror (errmsg); | |
| 2633 } | |
| 2634 else | |
| 2635 fatal (errmsg); | |
| 2636 } | |
| 2637 | |
| 2638 int_handler = (void (*) (int)) signal (SIGINT, SIG_IGN); | |
| 2639 #ifdef SIGQUIT | |
| 2640 quit_handler = (void (*) (int)) signal (SIGQUIT, SIG_IGN); | |
| 2641 #endif | |
| 2642 | |
| 2643 inf = pex_read_output (pex, 0); | |
| 2644 if (inf == NULL) | |
| 2645 fatal_perror ("can't open nm output"); | |
| 2646 | |
| 2647 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
|
2648 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2649 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
|
2650 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
|
2651 else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2652 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
|
2653 } |
| 0 | 2654 |
| 2655 /* Read each line of nm output. */ | |
| 2656 while (fgets (buf, sizeof buf, inf) != (char *) 0) | |
| 2657 { | |
| 2658 int ch, ch2; | |
| 2659 char *name, *end; | |
| 2660 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2661 if (debug) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2662 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
|
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 (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
|
2665 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2666 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
|
2667 continue; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2668 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2669 /* 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
|
2670 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
|
2671 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
|
2672 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
|
2673 && (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
|
2674 && 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
|
2675 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2676 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
|
2677 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2678 /* 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
|
2679 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
|
2680 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
|
2681 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2682 break; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2683 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2684 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2685 continue; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2686 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2687 |
| 0 | 2688 /* If it contains a constructor or destructor name, add the name |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2689 to the appropriate list unless this is a kind of symbol we're |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2690 not supposed to even consider. */ |
| 0 | 2691 |
| 2692 for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++) | |
| 2693 if (ch == ' ' && p[1] == 'U' && p[2] == ' ') | |
| 2694 break; | |
| 2695 | |
| 2696 if (ch != '_') | |
| 2697 continue; | |
| 2698 | |
| 2699 name = p; | |
| 2700 /* Find the end of the symbol name. | |
| 2701 Do not include `|', because Encore nm can tack that on the end. */ | |
| 2702 for (end = p; (ch2 = *end) != '\0' && !ISSPACE (ch2) && ch2 != '|'; | |
| 2703 end++) | |
| 2704 continue; | |
| 2705 | |
| 2706 | |
| 2707 *end = '\0'; | |
| 2708 switch (is_ctor_dtor (name)) | |
| 2709 { | |
| 2710 case SYM_CTOR: | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2711 if (! (filter & SCAN_CTOR)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2712 break; |
| 0 | 2713 if (which_pass != PASS_LIB) |
| 2714 add_to_list (&constructors, name); | |
| 2715 break; | |
| 2716 | |
| 2717 case SYM_DTOR: | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2718 if (! (filter & SCAN_DTOR)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2719 break; |
| 0 | 2720 if (which_pass != PASS_LIB) |
| 2721 add_to_list (&destructors, name); | |
| 2722 break; | |
| 2723 | |
| 2724 case SYM_INIT: | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2725 if (! (filter & SCAN_INIT)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2726 break; |
| 0 | 2727 if (which_pass != PASS_LIB) |
| 2728 fatal ("init function found in object %s", prog_name); | |
| 2729 #ifndef LD_INIT_SWITCH | |
| 2730 add_to_list (&constructors, name); | |
| 2731 #endif | |
| 2732 break; | |
| 2733 | |
| 2734 case SYM_FINI: | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2735 if (! (filter & SCAN_FINI)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2736 break; |
| 0 | 2737 if (which_pass != PASS_LIB) |
| 2738 fatal ("fini function found in object %s", prog_name); | |
| 2739 #ifndef LD_FINI_SWITCH | |
| 2740 add_to_list (&destructors, name); | |
| 2741 #endif | |
| 2742 break; | |
| 2743 | |
| 2744 case SYM_DWEH: | |
|
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2745 if (! (filter & SCAN_DWEH)) |
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|
2746 break; |
| 0 | 2747 if (which_pass != PASS_LIB) |
| 2748 add_to_list (&frame_tables, name); | |
| 2749 break; | |
| 2750 | |
| 2751 default: /* not a constructor or destructor */ | |
| 2752 continue; | |
| 2753 } | |
| 2754 } | |
| 2755 | |
| 2756 if (debug) | |
| 2757 fprintf (stderr, "\n"); | |
| 2758 | |
| 2759 do_wait (nm_file_name, pex); | |
| 2760 | |
| 2761 signal (SIGINT, int_handler); | |
| 2762 #ifdef SIGQUIT | |
| 2763 signal (SIGQUIT, quit_handler); | |
| 2764 #endif | |
| 2765 } | |
| 2766 | |
| 2767 #ifdef LDD_SUFFIX | |
| 2768 | |
| 2769 /* Use the List Dynamic Dependencies program to find shared libraries that | |
| 2770 the output file depends upon and their initialization/finalization | |
| 2771 routines, if any. */ | |
| 2772 | |
| 2773 static void | |
| 2774 scan_libraries (const char *prog_name) | |
| 2775 { | |
| 2776 static struct head libraries; /* list of shared libraries found */ | |
| 2777 struct id *list; | |
| 2778 void (*int_handler) (int); | |
| 2779 #ifdef SIGQUIT | |
| 2780 void (*quit_handler) (int); | |
| 2781 #endif | |
| 2782 char *real_ldd_argv[4]; | |
|
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2783 const char **ldd_argv = CONST_CAST2 (const char **, char **, real_ldd_argv); |
| 0 | 2784 int argc = 0; |
| 2785 struct pex_obj *pex; | |
| 2786 const char *errmsg; | |
| 2787 int err; | |
| 2788 char buf[1024]; | |
| 2789 FILE *inf; | |
| 2790 | |
| 2791 /* If we do not have an `ldd', complain. */ | |
| 2792 if (ldd_file_name == 0) | |
| 2793 { | |
| 2794 error ("cannot find 'ldd'"); | |
| 2795 return; | |
| 2796 } | |
| 2797 | |
| 2798 ldd_argv[argc++] = ldd_file_name; | |
| 2799 ldd_argv[argc++] = prog_name; | |
| 2800 ldd_argv[argc++] = (char *) 0; | |
| 2801 | |
| 2802 /* Trace if needed. */ | |
| 2803 if (vflag) | |
| 2804 { | |
| 2805 const char **p_argv; | |
| 2806 const char *str; | |
| 2807 | |
| 2808 for (p_argv = &ldd_argv[0]; (str = *p_argv) != (char *) 0; p_argv++) | |
| 2809 fprintf (stderr, " %s", str); | |
| 2810 | |
| 2811 fprintf (stderr, "\n"); | |
| 2812 } | |
| 2813 | |
| 2814 fflush (stdout); | |
| 2815 fflush (stderr); | |
| 2816 | |
| 2817 pex = pex_init (PEX_USE_PIPES, "collect2", NULL); | |
| 2818 if (pex == NULL) | |
| 2819 fatal_perror ("pex_init failed"); | |
| 2820 | |
| 2821 errmsg = pex_run (pex, 0, ldd_file_name, real_ldd_argv, NULL, NULL, &err); | |
| 2822 if (errmsg != NULL) | |
| 2823 { | |
| 2824 if (err != 0) | |
| 2825 { | |
| 2826 errno = err; | |
| 2827 fatal_perror (errmsg); | |
| 2828 } | |
| 2829 else | |
| 2830 fatal (errmsg); | |
| 2831 } | |
| 2832 | |
| 2833 int_handler = (void (*) (int)) signal (SIGINT, SIG_IGN); | |
| 2834 #ifdef SIGQUIT | |
| 2835 quit_handler = (void (*) (int)) signal (SIGQUIT, SIG_IGN); | |
| 2836 #endif | |
| 2837 | |
| 2838 inf = pex_read_output (pex, 0); | |
| 2839 if (inf == NULL) | |
| 2840 fatal_perror ("can't open ldd output"); | |
| 2841 | |
| 2842 if (debug) | |
| 2843 notice ("\nldd output with constructors/destructors.\n"); | |
| 2844 | |
| 2845 /* Read each line of ldd output. */ | |
| 2846 while (fgets (buf, sizeof buf, inf) != (char *) 0) | |
| 2847 { | |
| 2848 int ch2; | |
| 2849 char *name, *end, *p = buf; | |
| 2850 | |
| 2851 /* Extract names of libraries and add to list. */ | |
| 2852 PARSE_LDD_OUTPUT (p); | |
| 2853 if (p == 0) | |
| 2854 continue; | |
| 2855 | |
| 2856 name = p; | |
| 2857 if (strncmp (name, "not found", sizeof ("not found") - 1) == 0) | |
| 2858 fatal ("dynamic dependency %s not found", buf); | |
| 2859 | |
| 2860 /* Find the end of the symbol name. */ | |
| 2861 for (end = p; | |
| 2862 (ch2 = *end) != '\0' && ch2 != '\n' && !ISSPACE (ch2) && ch2 != '|'; | |
| 2863 end++) | |
| 2864 continue; | |
| 2865 *end = '\0'; | |
| 2866 | |
| 2867 if (access (name, R_OK) == 0) | |
| 2868 add_to_list (&libraries, name); | |
| 2869 else | |
| 2870 fatal ("unable to open dynamic dependency '%s'", buf); | |
| 2871 | |
| 2872 if (debug) | |
| 2873 fprintf (stderr, "\t%s\n", buf); | |
| 2874 } | |
| 2875 if (debug) | |
| 2876 fprintf (stderr, "\n"); | |
| 2877 | |
| 2878 do_wait (ldd_file_name, pex); | |
| 2879 | |
| 2880 signal (SIGINT, int_handler); | |
| 2881 #ifdef SIGQUIT | |
| 2882 signal (SIGQUIT, quit_handler); | |
| 2883 #endif | |
| 2884 | |
| 2885 /* Now iterate through the library list adding their symbols to | |
| 2886 the list. */ | |
| 2887 for (list = libraries.first; list; list = list->next) | |
|
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2888 scan_prog_file (list->name, PASS_LIB, SCAN_ALL); |
| 0 | 2889 } |
| 2890 | |
| 2891 #endif /* LDD_SUFFIX */ | |
| 2892 | |
| 2893 #endif /* OBJECT_FORMAT_NONE */ | |
| 2894 | |
| 2895 | |
| 2896 /* | |
| 2897 * COFF specific stuff. | |
| 2898 */ | |
| 2899 | |
| 2900 #ifdef OBJECT_FORMAT_COFF | |
| 2901 | |
| 2902 #if defined (EXTENDED_COFF) | |
| 2903 | |
| 2904 # define GCC_SYMBOLS(X) (SYMHEADER(X).isymMax + SYMHEADER(X).iextMax) | |
| 2905 # define GCC_SYMENT SYMR | |
| 2906 # define GCC_OK_SYMBOL(X) ((X).st == stProc || (X).st == stGlobal) | |
| 2907 # define GCC_SYMINC(X) (1) | |
| 2908 # define GCC_SYMZERO(X) (SYMHEADER(X).isymMax) | |
| 2909 # define GCC_CHECK_HDR(X) (PSYMTAB(X) != 0) | |
| 2910 | |
| 2911 #else | |
| 2912 | |
| 2913 # define GCC_SYMBOLS(X) (HEADER(ldptr).f_nsyms) | |
| 2914 # define GCC_SYMENT SYMENT | |
| 2915 # if defined (C_WEAKEXT) | |
| 2916 # define GCC_OK_SYMBOL(X) \ | |
| 2917 (((X).n_sclass == C_EXT || (X).n_sclass == C_WEAKEXT) && \ | |
| 2918 ((X).n_scnum > N_UNDEF) && \ | |
| 2919 (aix64_flag \ | |
| 2920 || (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) \ | |
| 2921 || ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT)))) | |
| 2922 # define GCC_UNDEF_SYMBOL(X) \ | |
| 2923 (((X).n_sclass == C_EXT || (X).n_sclass == C_WEAKEXT) && \ | |
| 2924 ((X).n_scnum == N_UNDEF)) | |
| 2925 # else | |
| 2926 # define GCC_OK_SYMBOL(X) \ | |
| 2927 (((X).n_sclass == C_EXT) && \ | |
| 2928 ((X).n_scnum > N_UNDEF) && \ | |
| 2929 (aix64_flag \ | |
| 2930 || (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) \ | |
| 2931 || ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT)))) | |
| 2932 # define GCC_UNDEF_SYMBOL(X) \ | |
| 2933 (((X).n_sclass == C_EXT) && ((X).n_scnum == N_UNDEF)) | |
| 2934 # endif | |
| 2935 # define GCC_SYMINC(X) ((X).n_numaux+1) | |
| 2936 # define GCC_SYMZERO(X) 0 | |
| 2937 | |
| 2938 /* 0757 = U803XTOCMAGIC (AIX 4.3) and 0767 = U64_TOCMAGIC (AIX V5) */ | |
|
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|
2939 #if TARGET_AIX_VERSION >= 51 |
| 0 | 2940 # define GCC_CHECK_HDR(X) \ |
| 2941 ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \ | |
| 2942 || (HEADER (X).f_magic == 0767 && aix64_flag)) | |
| 2943 #else | |
| 2944 # define GCC_CHECK_HDR(X) \ | |
| 2945 ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \ | |
| 2946 || (HEADER (X).f_magic == 0757 && aix64_flag)) | |
| 2947 #endif | |
| 2948 | |
| 2949 #endif | |
| 2950 | |
| 2951 #ifdef COLLECT_EXPORT_LIST | |
| 2952 /* Array of standard AIX libraries which should not | |
| 2953 be scanned for ctors/dtors. */ | |
| 2954 static const char *const aix_std_libs[] = { | |
| 2955 "/unix", | |
| 2956 "/lib/libc.a", | |
| 2957 "/lib/libm.a", | |
| 2958 "/lib/libc_r.a", | |
| 2959 "/lib/libm_r.a", | |
| 2960 "/usr/lib/libc.a", | |
| 2961 "/usr/lib/libm.a", | |
| 2962 "/usr/lib/libc_r.a", | |
| 2963 "/usr/lib/libm_r.a", | |
| 2964 "/usr/lib/threads/libc.a", | |
| 2965 "/usr/ccs/lib/libc.a", | |
| 2966 "/usr/ccs/lib/libm.a", | |
| 2967 "/usr/ccs/lib/libc_r.a", | |
| 2968 "/usr/ccs/lib/libm_r.a", | |
| 2969 NULL | |
| 2970 }; | |
| 2971 | |
| 2972 /* This function checks the filename and returns 1 | |
| 2973 if this name matches the location of a standard AIX library. */ | |
| 2974 static int ignore_library (const char *); | |
| 2975 static int | |
| 2976 ignore_library (const char *name) | |
| 2977 { | |
|
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2978 const char *const *p; |
|
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2979 size_t length; |
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2980 |
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|
2981 if (target_system_root[0] != '\0') |
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2982 { |
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2983 length = strlen (target_system_root); |
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2984 if (strncmp (name, target_system_root, length) != 0) |
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|
2985 return 0; |
|
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|
2986 name += length; |
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|
2987 } |
|
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|
2988 for (p = &aix_std_libs[0]; *p != NULL; ++p) |
|
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|
2989 if (strcmp (name, *p) == 0) |
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|
2990 return 1; |
| 0 | 2991 return 0; |
| 2992 } | |
| 2993 #endif /* COLLECT_EXPORT_LIST */ | |
| 2994 | |
| 2995 #if defined (HAVE_DECL_LDGETNAME) && !HAVE_DECL_LDGETNAME | |
| 2996 extern char *ldgetname (LDFILE *, GCC_SYMENT *); | |
| 2997 #endif | |
| 2998 | |
| 2999 /* COFF version to scan the name list of the loaded program for | |
|
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|
3000 the symbols g++ uses for static constructors and destructors. */ |
| 0 | 3001 |
| 3002 static void | |
|
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|
3003 scan_prog_file (const char *prog_name, scanpass which_pass, |
|
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|
3004 scanfilter filter) |
| 0 | 3005 { |
| 3006 LDFILE *ldptr = NULL; | |
| 3007 int sym_index, sym_count; | |
| 3008 int is_shared = 0; | |
| 3009 | |
| 3010 if (which_pass != PASS_FIRST && which_pass != PASS_OBJ) | |
| 3011 return; | |
| 3012 | |
| 3013 #ifdef COLLECT_EXPORT_LIST | |
| 3014 /* We do not need scanning for some standard C libraries. */ | |
| 3015 if (which_pass == PASS_FIRST && ignore_library (prog_name)) | |
| 3016 return; | |
| 3017 | |
| 3018 /* On AIX we have a loop, because there is not much difference | |
| 3019 between an object and an archive. This trick allows us to | |
| 3020 eliminate scan_libraries() function. */ | |
| 3021 do | |
| 3022 { | |
| 3023 #endif | |
| 3024 /* Some platforms (e.g. OSF4) declare ldopen as taking a | |
| 3025 non-const char * filename parameter, even though it will not | |
| 3026 modify that string. So we must cast away const-ness here, | |
| 3027 using CONST_CAST to prevent complaints from -Wcast-qual. */ | |
| 3028 if ((ldptr = ldopen (CONST_CAST (char *, prog_name), ldptr)) != NULL) | |
| 3029 { | |
| 3030 if (! MY_ISCOFF (HEADER (ldptr).f_magic)) | |
| 3031 fatal ("%s: not a COFF file", prog_name); | |
| 3032 | |
| 3033 if (GCC_CHECK_HDR (ldptr)) | |
| 3034 { | |
| 3035 sym_count = GCC_SYMBOLS (ldptr); | |
| 3036 sym_index = GCC_SYMZERO (ldptr); | |
| 3037 | |
| 3038 #ifdef COLLECT_EXPORT_LIST | |
| 3039 /* Is current archive member a shared object? */ | |
| 3040 is_shared = HEADER (ldptr).f_flags & F_SHROBJ; | |
| 3041 #endif | |
| 3042 | |
| 3043 while (sym_index < sym_count) | |
| 3044 { | |
| 3045 GCC_SYMENT symbol; | |
| 3046 | |
| 3047 if (ldtbread (ldptr, sym_index, &symbol) <= 0) | |
| 3048 break; | |
| 3049 sym_index += GCC_SYMINC (symbol); | |
| 3050 | |
| 3051 if (GCC_OK_SYMBOL (symbol)) | |
| 3052 { | |
| 3053 char *name; | |
| 3054 | |
| 3055 if ((name = ldgetname (ldptr, &symbol)) == NULL) | |
| 3056 continue; /* Should never happen. */ | |
| 3057 | |
| 3058 #ifdef XCOFF_DEBUGGING_INFO | |
| 3059 /* All AIX function names have a duplicate entry | |
| 3060 beginning with a dot. */ | |
| 3061 if (*name == '.') | |
| 3062 ++name; | |
| 3063 #endif | |
| 3064 | |
| 3065 switch (is_ctor_dtor (name)) | |
| 3066 { | |
| 3067 case SYM_CTOR: | |
|
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|
3068 if (! (filter & SCAN_CTOR)) |
|
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|
3069 break; |
| 0 | 3070 if (! is_shared) |
| 3071 add_to_list (&constructors, name); | |
| 3072 #if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH) | |
| 3073 if (which_pass == PASS_OBJ) | |
| 3074 add_to_list (&exports, name); | |
| 3075 #endif | |
| 3076 break; | |
| 3077 | |
| 3078 case SYM_DTOR: | |
|
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|
3079 if (! (filter & SCAN_DTOR)) |
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|
3080 break; |
| 0 | 3081 if (! is_shared) |
| 3082 add_to_list (&destructors, name); | |
| 3083 #if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH) | |
| 3084 if (which_pass == PASS_OBJ) | |
| 3085 add_to_list (&exports, name); | |
| 3086 #endif | |
| 3087 break; | |
| 3088 | |
| 3089 #ifdef COLLECT_EXPORT_LIST | |
| 3090 case SYM_INIT: | |
|
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|
3091 if (! (filter & SCAN_INIT)) |
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|
3092 break; |
| 0 | 3093 #ifndef LD_INIT_SWITCH |
| 3094 if (is_shared) | |
| 3095 add_to_list (&constructors, name); | |
| 3096 #endif | |
| 3097 break; | |
| 3098 | |
| 3099 case SYM_FINI: | |
|
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|
3100 if (! (filter & SCAN_FINI)) |
|
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|
3101 break; |
| 0 | 3102 #ifndef LD_INIT_SWITCH |
| 3103 if (is_shared) | |
| 3104 add_to_list (&destructors, name); | |
| 3105 #endif | |
| 3106 break; | |
| 3107 #endif | |
| 3108 | |
| 3109 case SYM_DWEH: | |
|
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|
3110 if (! (filter & SCAN_DWEH)) |
|
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|
3111 break; |
| 0 | 3112 if (! is_shared) |
| 3113 add_to_list (&frame_tables, name); | |
| 3114 #if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH) | |
| 3115 if (which_pass == PASS_OBJ) | |
| 3116 add_to_list (&exports, name); | |
| 3117 #endif | |
| 3118 break; | |
| 3119 | |
| 3120 default: /* not a constructor or destructor */ | |
| 3121 #ifdef COLLECT_EXPORT_LIST | |
| 3122 /* Explicitly export all global symbols when | |
| 3123 building a shared object on AIX, but do not | |
| 3124 re-export symbols from another shared object | |
| 3125 and do not export symbols if the user | |
| 3126 provides an explicit export list. */ | |
| 3127 if (shared_obj && !is_shared | |
| 3128 && which_pass == PASS_OBJ && !export_flag) | |
| 3129 add_to_list (&exports, name); | |
| 3130 #endif | |
| 3131 continue; | |
| 3132 } | |
| 3133 | |
| 3134 if (debug) | |
| 3135 #if !defined(EXTENDED_COFF) | |
| 3136 fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n", | |
| 3137 symbol.n_scnum, symbol.n_sclass, | |
| 3138 (symbol.n_type ? "0" : ""), symbol.n_type, | |
| 3139 name); | |
| 3140 #else | |
| 3141 fprintf (stderr, | |
| 3142 "\tiss = %5d, value = %5ld, index = %5d, name = %s\n", | |
| 3143 symbol.iss, (long) symbol.value, symbol.index, name); | |
| 3144 #endif | |
| 3145 } | |
| 3146 } | |
| 3147 } | |
| 3148 #ifdef COLLECT_EXPORT_LIST | |
| 3149 else | |
| 3150 { | |
| 3151 /* If archive contains both 32-bit and 64-bit objects, | |
| 3152 we want to skip objects in other mode so mismatch normal. */ | |
| 3153 if (debug) | |
| 3154 fprintf (stderr, "%s : magic=%o aix64=%d mismatch\n", | |
| 3155 prog_name, HEADER (ldptr).f_magic, aix64_flag); | |
| 3156 } | |
| 3157 #endif | |
| 3158 } | |
| 3159 else | |
| 3160 { | |
| 3161 fatal ("%s: cannot open as COFF file", prog_name); | |
| 3162 } | |
| 3163 #ifdef COLLECT_EXPORT_LIST | |
| 3164 /* On AIX loop continues while there are more members in archive. */ | |
| 3165 } | |
| 3166 while (ldclose (ldptr) == FAILURE); | |
| 3167 #else | |
| 3168 /* Otherwise we simply close ldptr. */ | |
| 3169 (void) ldclose(ldptr); | |
| 3170 #endif | |
| 3171 } | |
| 3172 #endif /* OBJECT_FORMAT_COFF */ | |
| 3173 | |
| 3174 #ifdef COLLECT_EXPORT_LIST | |
| 3175 /* Given a library name without "lib" prefix, this function | |
| 3176 returns a full library name including a path. */ | |
| 3177 static char * | |
| 3178 resolve_lib_name (const char *name) | |
| 3179 { | |
| 3180 char *lib_buf; | |
| 3181 int i, j, l = 0; | |
| 3182 /* Library extensions for AIX dynamic linking. */ | |
| 3183 const char * const libexts[2] = {"a", "so"}; | |
| 3184 | |
| 3185 for (i = 0; libpaths[i]; i++) | |
| 3186 if (libpaths[i]->max_len > l) | |
| 3187 l = libpaths[i]->max_len; | |
| 3188 | |
| 3189 lib_buf = XNEWVEC (char, l + strlen(name) + 10); | |
| 3190 | |
| 3191 for (i = 0; libpaths[i]; i++) | |
| 3192 { | |
| 3193 struct prefix_list *list = libpaths[i]->plist; | |
| 3194 for (; list; list = list->next) | |
| 3195 { | |
| 3196 /* The following lines are needed because path_prefix list | |
| 3197 may contain directories both with trailing '/' and | |
| 3198 without it. */ | |
| 3199 const char *p = ""; | |
| 3200 if (list->prefix[strlen(list->prefix)-1] != '/') | |
| 3201 p = "/"; | |
| 3202 for (j = 0; j < 2; j++) | |
| 3203 { | |
| 3204 sprintf (lib_buf, "%s%slib%s.%s", | |
| 3205 list->prefix, p, name, | |
| 3206 libexts[(j + aixrtl_flag) % 2]); | |
| 3207 if (debug) fprintf (stderr, "searching for: %s\n", lib_buf); | |
| 3208 if (file_exists (lib_buf)) | |
| 3209 { | |
| 3210 if (debug) fprintf (stderr, "found: %s\n", lib_buf); | |
| 3211 return (lib_buf); | |
| 3212 } | |
| 3213 } | |
| 3214 } | |
| 3215 } | |
| 3216 if (debug) | |
| 3217 fprintf (stderr, "not found\n"); | |
| 3218 else | |
| 3219 fatal ("library lib%s not found", name); | |
| 3220 return (NULL); | |
| 3221 } | |
| 3222 #endif /* COLLECT_EXPORT_LIST */ |