Mercurial > hg > CbC > CbC_gcc
annotate gcc/collect2.c @ 132:d34655255c78
update gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 10:21:07 +0900 |
parents | 84e7813d76e9 |
children | 1830386684a0 |
rev | line source |
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0 | 1 /* Collect static initialization info into data structures that can be |
2 traversed by C++ initialization and finalization routines. | |
131 | 3 Copyright (C) 1992-2018 Free Software Foundation, Inc. |
0 | 4 Contributed by Chris Smith (csmith@convex.com). |
5 Heavily modified by Michael Meissner (meissner@cygnus.com), | |
6 Per Bothner (bothner@cygnus.com), and John Gilmore (gnu@cygnus.com). | |
7 | |
8 This file is part of GCC. | |
9 | |
10 GCC is free software; you can redistribute it and/or modify it under | |
11 the terms of the GNU General Public License as published by the Free | |
12 Software Foundation; either version 3, or (at your option) any later | |
13 version. | |
14 | |
15 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
16 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
18 for more details. | |
19 | |
20 You should have received a copy of the GNU General Public License | |
21 along with GCC; see the file COPYING3. If not see | |
22 <http://www.gnu.org/licenses/>. */ | |
23 | |
24 | |
25 /* Build tables of static constructors and destructors and run ld. */ | |
26 | |
27 #include "config.h" | |
28 #include "system.h" | |
29 #include "coretypes.h" | |
30 #include "tm.h" | |
111 | 31 #include "filenames.h" |
32 #include "file-find.h" | |
0 | 33 |
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34 /* TARGET_64BIT may be defined to use driver specific functionality. */ |
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35 #undef TARGET_64BIT |
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36 #define TARGET_64BIT TARGET_64BIT_DEFAULT |
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37 |
0 | 38 #ifndef LIBRARY_PATH_ENV |
39 #define LIBRARY_PATH_ENV "LIBRARY_PATH" | |
40 #endif | |
41 | |
42 #define COLLECT | |
43 | |
44 #include "collect2.h" | |
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45 #include "collect2-aix.h" |
111 | 46 #include "collect-utils.h" |
47 #include "diagnostic.h" | |
0 | 48 #include "demangle.h" |
49 #include "obstack.h" | |
50 #include "intl.h" | |
51 #include "version.h" | |
52 | |
53 /* On certain systems, we have code that works by scanning the object file | |
54 directly. But this code uses system-specific header files and library | |
55 functions, so turn it off in a cross-compiler. Likewise, the names of | |
56 the utilities are not correct for a cross-compiler; we have to hope that | |
57 cross-versions are in the proper directories. */ | |
58 | |
59 #ifdef CROSS_DIRECTORY_STRUCTURE | |
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60 #ifndef CROSS_AIX_SUPPORT |
0 | 61 #undef OBJECT_FORMAT_COFF |
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62 #endif |
0 | 63 #undef MD_EXEC_PREFIX |
64 #undef REAL_LD_FILE_NAME | |
65 #undef REAL_NM_FILE_NAME | |
66 #undef REAL_STRIP_FILE_NAME | |
67 #endif | |
68 | |
69 /* If we cannot use a special method, use the ordinary one: | |
70 run nm to find what symbols are present. | |
71 In a cross-compiler, this means you need a cross nm, | |
72 but that is not quite as unpleasant as special headers. */ | |
73 | |
74 #if !defined (OBJECT_FORMAT_COFF) | |
75 #define OBJECT_FORMAT_NONE | |
76 #endif | |
77 | |
78 #ifdef OBJECT_FORMAT_COFF | |
79 | |
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80 #ifndef CROSS_DIRECTORY_STRUCTURE |
0 | 81 #include <a.out.h> |
82 #include <ar.h> | |
83 | |
84 #ifdef UMAX | |
85 #include <sgs.h> | |
86 #endif | |
87 | |
88 /* Many versions of ldfcn.h define these. */ | |
89 #ifdef FREAD | |
90 #undef FREAD | |
91 #undef FWRITE | |
92 #endif | |
93 | |
94 #include <ldfcn.h> | |
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95 #endif |
0 | 96 |
97 /* Some systems have an ISCOFF macro, but others do not. In some cases | |
98 the macro may be wrong. MY_ISCOFF is defined in tm.h files for machines | |
99 that either do not have an ISCOFF macro in /usr/include or for those | |
100 where it is wrong. */ | |
101 | |
102 #ifndef MY_ISCOFF | |
103 #define MY_ISCOFF(X) ISCOFF (X) | |
104 #endif | |
105 | |
106 #endif /* OBJECT_FORMAT_COFF */ | |
107 | |
108 #ifdef OBJECT_FORMAT_NONE | |
109 | |
110 /* Default flags to pass to nm. */ | |
111 #ifndef NM_FLAGS | |
112 #define NM_FLAGS "-n" | |
113 #endif | |
114 | |
115 #endif /* OBJECT_FORMAT_NONE */ | |
116 | |
117 /* Some systems use __main in a way incompatible with its use in gcc, in these | |
118 cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to | |
119 give the same symbol without quotes for an alternative entry point. */ | |
120 #ifndef NAME__MAIN | |
121 #define NAME__MAIN "__main" | |
122 #endif | |
123 | |
124 /* This must match tree.h. */ | |
125 #define DEFAULT_INIT_PRIORITY 65535 | |
126 | |
127 #ifndef COLLECT_SHARED_INIT_FUNC | |
128 #define COLLECT_SHARED_INIT_FUNC(STREAM, FUNC) \ | |
129 fprintf ((STREAM), "void _GLOBAL__DI() {\n\t%s();\n}\n", (FUNC)) | |
130 #endif | |
131 #ifndef COLLECT_SHARED_FINI_FUNC | |
132 #define COLLECT_SHARED_FINI_FUNC(STREAM, FUNC) \ | |
133 fprintf ((STREAM), "void _GLOBAL__DD() {\n\t%s();\n}\n", (FUNC)) | |
134 #endif | |
135 | |
136 #ifdef LDD_SUFFIX | |
137 #define SCAN_LIBRARIES | |
138 #endif | |
139 | |
140 #ifndef SHLIB_SUFFIX | |
141 #define SHLIB_SUFFIX ".so" | |
142 #endif | |
143 | |
144 #ifdef USE_COLLECT2 | |
145 int do_collecting = 1; | |
146 #else | |
147 int do_collecting = 0; | |
148 #endif | |
149 | |
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150 /* Cook up an always defined indication of whether we proceed the |
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151 "EXPORT_LIST" way. */ |
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152 |
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153 #ifdef COLLECT_EXPORT_LIST |
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154 #define DO_COLLECT_EXPORT_LIST 1 |
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155 #else |
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156 #define DO_COLLECT_EXPORT_LIST 0 |
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157 #endif |
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158 |
0 | 159 /* Nonzero if we should suppress the automatic demangling of identifiers |
160 in linker error messages. Set from COLLECT_NO_DEMANGLE. */ | |
161 int no_demangle; | |
162 | |
163 /* Linked lists of constructor and destructor names. */ | |
164 | |
165 struct id | |
166 { | |
167 struct id *next; | |
168 int sequence; | |
169 char name[1]; | |
170 }; | |
171 | |
172 struct head | |
173 { | |
174 struct id *first; | |
175 struct id *last; | |
176 int number; | |
177 }; | |
178 | |
179 static int rflag; /* true if -r */ | |
180 static int strip_flag; /* true if -s */ | |
181 #ifdef COLLECT_EXPORT_LIST | |
182 static int export_flag; /* true if -bE */ | |
183 static int aix64_flag; /* true if -b64 */ | |
184 static int aixrtl_flag; /* true if -brtl */ | |
111 | 185 static int aixlazy_flag; /* true if -blazy */ |
0 | 186 #endif |
187 | |
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188 enum lto_mode_d { |
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189 LTO_MODE_NONE, /* Not doing LTO. */ |
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190 LTO_MODE_LTO, /* Normal LTO. */ |
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191 LTO_MODE_WHOPR /* WHOPR. */ |
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192 }; |
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193 |
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194 /* Current LTO mode. */ |
111 | 195 #ifdef ENABLE_LTO |
196 static enum lto_mode_d lto_mode = LTO_MODE_WHOPR; | |
197 #else | |
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198 static enum lto_mode_d lto_mode = LTO_MODE_NONE; |
111 | 199 #endif |
200 | |
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201 bool helpflag; /* true if --help */ |
0 | 202 |
203 static int shared_obj; /* true if -shared */ | |
131 | 204 static int static_obj; /* true if -static */ |
0 | 205 |
206 static const char *c_file; /* <xxx>.c for constructor/destructor list. */ | |
207 static const char *o_file; /* <xxx>.o for constructor/destructor list. */ | |
208 #ifdef COLLECT_EXPORT_LIST | |
209 static const char *export_file; /* <xxx>.x for AIX export list. */ | |
210 #endif | |
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211 static char **lto_o_files; /* Output files for LTO. */ |
0 | 212 const char *ldout; /* File for ld stdout. */ |
213 const char *lderrout; /* File for ld stderr. */ | |
214 static const char *output_file; /* Output file for ld. */ | |
215 static const char *nm_file_name; /* pathname of nm */ | |
216 #ifdef LDD_SUFFIX | |
217 static const char *ldd_file_name; /* pathname of ldd (or equivalent) */ | |
218 #endif | |
219 static const char *strip_file_name; /* pathname of strip */ | |
220 const char *c_file_name; /* pathname of gcc */ | |
221 static char *initname, *fininame; /* names of init and fini funcs */ | |
222 | |
111 | 223 |
224 #ifdef TARGET_AIX_VERSION | |
225 static char *aix_shared_initname; | |
226 static char *aix_shared_fininame; /* init/fini names as per the scheme | |
227 described in config/rs6000/aix.h */ | |
228 #endif | |
229 | |
0 | 230 static struct head constructors; /* list of constructors found */ |
231 static struct head destructors; /* list of destructors found */ | |
232 #ifdef COLLECT_EXPORT_LIST | |
233 static struct head exports; /* list of exported symbols */ | |
234 #endif | |
235 static struct head frame_tables; /* list of frame unwind info tables */ | |
236 | |
111 | 237 bool at_file_supplied; /* Whether to use @file arguments */ |
0 | 238 |
239 struct obstack temporary_obstack; | |
240 char * temporary_firstobj; | |
241 | |
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242 /* A string that must be prepended to a target OS path in order to find |
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243 it on the host system. */ |
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244 #ifdef TARGET_SYSTEM_ROOT |
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245 static const char *target_system_root = TARGET_SYSTEM_ROOT; |
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246 #else |
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247 static const char *target_system_root = ""; |
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248 #endif |
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249 |
111 | 250 /* Whether we may unlink the output file, which should be set as soon as we |
251 know we have successfully produced it. This is typically useful to prevent | |
252 blindly attempting to unlink a read-only output that the target linker | |
253 would leave untouched. */ | |
254 bool may_unlink_output_file = false; | |
0 | 255 |
256 #ifdef COLLECT_EXPORT_LIST | |
257 /* Lists to keep libraries to be scanned for global constructors/destructors. */ | |
258 static struct head libs; /* list of libraries */ | |
131 | 259 static struct head static_libs; /* list of statically linked libraries */ |
0 | 260 static struct path_prefix cmdline_lib_dirs; /* directories specified with -L */ |
261 static struct path_prefix libpath_lib_dirs; /* directories in LIBPATH */ | |
262 static struct path_prefix *libpaths[3] = {&cmdline_lib_dirs, | |
263 &libpath_lib_dirs, NULL}; | |
264 #endif | |
265 | |
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266 /* List of names of object files containing LTO information. |
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267 These are a subset of the object file names appearing on the |
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268 command line, and must be identical, in the sense of pointer |
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269 equality, with the names passed to maybe_run_lto_and_relink(). */ |
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270 |
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271 struct lto_object |
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272 { |
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273 const char *name; /* Name of object file. */ |
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274 struct lto_object *next; /* Next in linked list. */ |
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275 }; |
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276 |
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277 struct lto_object_list |
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278 { |
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279 struct lto_object *first; /* First list element. */ |
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280 struct lto_object *last; /* Last list element. */ |
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281 }; |
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282 |
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283 static struct lto_object_list lto_objects; |
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284 |
0 | 285 /* Special kinds of symbols that a name may denote. */ |
286 | |
111 | 287 enum symkind { |
0 | 288 SYM_REGULAR = 0, /* nothing special */ |
289 | |
290 SYM_CTOR = 1, /* constructor */ | |
291 SYM_DTOR = 2, /* destructor */ | |
292 SYM_INIT = 3, /* shared object routine that calls all the ctors */ | |
293 SYM_FINI = 4, /* shared object routine that calls all the dtors */ | |
111 | 294 SYM_DWEH = 5, /* DWARF exception handling table */ |
295 SYM_AIXI = 6, | |
296 SYM_AIXD = 7 | |
297 }; | |
298 | |
299 const char tool_name[] = "collect2"; | |
0 | 300 |
301 static symkind is_ctor_dtor (const char *); | |
302 | |
303 static void handler (int); | |
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304 static void maybe_unlink_list (char **); |
0 | 305 static void add_to_list (struct head *, const char *); |
306 static int extract_init_priority (const char *); | |
307 static void sort_ids (struct head *); | |
308 static void write_list (FILE *, const char *, struct id *); | |
309 #ifdef COLLECT_EXPORT_LIST | |
310 static void dump_list (FILE *, const char *, struct id *); | |
311 #endif | |
312 #if 0 | |
313 static void dump_prefix_list (FILE *, const char *, struct prefix_list *); | |
314 #endif | |
315 static void write_list_with_asm (FILE *, const char *, struct id *); | |
316 static void write_c_file (FILE *, const char *); | |
317 static void write_c_file_stat (FILE *, const char *); | |
318 #ifndef LD_INIT_SWITCH | |
319 static void write_c_file_glob (FILE *, const char *); | |
320 #endif | |
321 #ifdef SCAN_LIBRARIES | |
322 static void scan_libraries (const char *); | |
323 #endif | |
324 #ifdef COLLECT_EXPORT_LIST | |
325 static int is_in_list (const char *, struct id *); | |
326 static void write_aix_file (FILE *, struct id *); | |
327 static char *resolve_lib_name (const char *); | |
328 #endif | |
329 static char *extract_string (const char **); | |
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330 static void post_ld_pass (bool); |
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331 static void process_args (int *argcp, char **argv); |
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332 |
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333 /* Enumerations describing which pass this is for scanning the |
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334 program file ... */ |
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335 |
111 | 336 enum scanpass { |
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337 PASS_FIRST, /* without constructors */ |
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338 PASS_OBJ, /* individual objects */ |
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339 PASS_LIB, /* looking for shared libraries */ |
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340 PASS_SECOND, /* with constructors linked in */ |
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341 PASS_LTOINFO /* looking for objects with LTO info */ |
111 | 342 }; |
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343 |
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344 /* ... and which kinds of symbols are to be considered. */ |
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345 |
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346 enum scanfilter_masks { |
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347 SCAN_NOTHING = 0, |
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348 |
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349 SCAN_CTOR = 1 << SYM_CTOR, |
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350 SCAN_DTOR = 1 << SYM_DTOR, |
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351 SCAN_INIT = 1 << SYM_INIT, |
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352 SCAN_FINI = 1 << SYM_FINI, |
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353 SCAN_DWEH = 1 << SYM_DWEH, |
111 | 354 SCAN_AIXI = 1 << SYM_AIXI, |
355 SCAN_AIXD = 1 << SYM_AIXD, | |
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356 SCAN_ALL = ~0 |
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357 }; |
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358 |
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359 /* This type is used for parameters and variables which hold |
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360 combinations of the flags in enum scanfilter_masks. */ |
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361 typedef int scanfilter; |
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362 |
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363 /* Scan the name list of the loaded program for the symbols g++ uses for |
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364 static constructors and destructors. |
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365 |
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366 The SCANPASS argument tells which collect processing pass this is for and |
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367 the SCANFILTER argument tells which kinds of symbols to consider in this |
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368 pass. Symbols of a special kind not in the filter mask are considered as |
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369 regular ones. |
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370 |
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371 The constructor table begins at __CTOR_LIST__ and contains a count of the |
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372 number of pointers (or -1 if the constructors are built in a separate |
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373 section by the linker), followed by the pointers to the constructor |
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374 functions, terminated with a null pointer. The destructor table has the |
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375 same format, and begins at __DTOR_LIST__. */ |
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376 |
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377 static void scan_prog_file (const char *, scanpass, scanfilter); |
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378 |
0 | 379 |
380 /* Delete tempfiles and exit function. */ | |
381 | |
382 void | |
111 | 383 tool_cleanup (bool from_signal) |
0 | 384 { |
385 if (c_file != 0 && c_file[0]) | |
386 maybe_unlink (c_file); | |
387 | |
388 if (o_file != 0 && o_file[0]) | |
389 maybe_unlink (o_file); | |
390 | |
391 #ifdef COLLECT_EXPORT_LIST | |
392 if (export_file != 0 && export_file[0]) | |
393 maybe_unlink (export_file); | |
394 #endif | |
395 | |
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396 if (lto_o_files) |
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397 maybe_unlink_list (lto_o_files); |
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398 |
0 | 399 if (ldout != 0 && ldout[0]) |
400 { | |
111 | 401 if (!from_signal) |
402 dump_ld_file (ldout, stdout); | |
0 | 403 maybe_unlink (ldout); |
404 } | |
405 | |
406 if (lderrout != 0 && lderrout[0]) | |
407 { | |
111 | 408 if (!from_signal) |
409 dump_ld_file (lderrout, stderr); | |
0 | 410 maybe_unlink (lderrout); |
411 } | |
111 | 412 } |
413 | |
414 static void | |
415 collect_atexit (void) | |
416 { | |
417 tool_cleanup (false); | |
0 | 418 } |
419 | |
111 | 420 static void |
421 handler (int signo) | |
0 | 422 { |
111 | 423 tool_cleanup (true); |
424 | |
425 signal (signo, SIG_DFL); | |
426 raise (signo); | |
0 | 427 } |
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428 /* Notify user of a non-error, without translating the format string. */ |
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429 void |
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430 notice_translated (const char *cmsgid, ...) |
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431 { |
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432 va_list ap; |
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433 |
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434 va_start (ap, cmsgid); |
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435 vfprintf (stderr, cmsgid, ap); |
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436 va_end (ap); |
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437 } |
0 | 438 |
439 int | |
440 file_exists (const char *name) | |
441 { | |
442 return access (name, R_OK) == 0; | |
443 } | |
444 | |
445 /* Parse a reasonable subset of shell quoting syntax. */ | |
446 | |
447 static char * | |
448 extract_string (const char **pp) | |
449 { | |
450 const char *p = *pp; | |
451 int backquote = 0; | |
452 int inside = 0; | |
453 | |
454 for (;;) | |
455 { | |
456 char c = *p; | |
457 if (c == '\0') | |
458 break; | |
459 ++p; | |
460 if (backquote) | |
461 obstack_1grow (&temporary_obstack, c); | |
462 else if (! inside && c == ' ') | |
463 break; | |
464 else if (! inside && c == '\\') | |
465 backquote = 1; | |
466 else if (c == '\'') | |
467 inside = !inside; | |
468 else | |
469 obstack_1grow (&temporary_obstack, c); | |
470 } | |
471 | |
472 obstack_1grow (&temporary_obstack, '\0'); | |
473 *pp = p; | |
474 return XOBFINISH (&temporary_obstack, char *); | |
475 } | |
476 | |
477 void | |
111 | 478 dump_ld_file (const char *name, FILE *to) |
0 | 479 { |
480 FILE *stream = fopen (name, "r"); | |
481 | |
482 if (stream == 0) | |
483 return; | |
484 while (1) | |
485 { | |
486 int c; | |
487 while (c = getc (stream), | |
488 c != EOF && (ISIDNUM (c) || c == '$' || c == '.')) | |
489 obstack_1grow (&temporary_obstack, c); | |
490 if (obstack_object_size (&temporary_obstack) > 0) | |
491 { | |
492 const char *word, *p; | |
493 char *result; | |
494 obstack_1grow (&temporary_obstack, '\0'); | |
495 word = XOBFINISH (&temporary_obstack, const char *); | |
496 | |
497 if (*word == '.') | |
498 ++word, putc ('.', to); | |
499 p = word; | |
500 if (!strncmp (p, USER_LABEL_PREFIX, strlen (USER_LABEL_PREFIX))) | |
501 p += strlen (USER_LABEL_PREFIX); | |
502 | |
503 #ifdef HAVE_LD_DEMANGLE | |
504 result = 0; | |
505 #else | |
506 if (no_demangle) | |
507 result = 0; | |
508 else | |
509 result = cplus_demangle (p, DMGL_PARAMS | DMGL_ANSI | DMGL_VERBOSE); | |
510 #endif | |
511 | |
512 if (result) | |
513 { | |
514 int diff; | |
515 fputs (result, to); | |
516 | |
517 diff = strlen (word) - strlen (result); | |
518 while (diff > 0 && c == ' ') | |
519 --diff, putc (' ', to); | |
520 if (diff < 0 && c == ' ') | |
521 { | |
522 while (diff < 0 && c == ' ') | |
523 ++diff, c = getc (stream); | |
524 if (!ISSPACE (c)) | |
525 { | |
526 /* Make sure we output at least one space, or | |
527 the demangled symbol name will run into | |
528 whatever text follows. */ | |
529 putc (' ', to); | |
530 } | |
531 } | |
532 | |
533 free (result); | |
534 } | |
535 else | |
536 fputs (word, to); | |
537 | |
538 fflush (to); | |
539 obstack_free (&temporary_obstack, temporary_firstobj); | |
540 } | |
541 if (c == EOF) | |
542 break; | |
543 putc (c, to); | |
544 } | |
545 fclose (stream); | |
546 } | |
547 | |
548 /* Return the kind of symbol denoted by name S. */ | |
549 | |
550 static symkind | |
551 is_ctor_dtor (const char *s) | |
552 { | |
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553 struct names { const char *const name; const int len; symkind ret; |
0 | 554 const int two_underscores; }; |
555 | |
556 const struct names *p; | |
557 int ch; | |
558 const char *orig_s = s; | |
559 | |
560 static const struct names special[] = { | |
561 #ifndef NO_DOLLAR_IN_LABEL | |
562 { "GLOBAL__I$", sizeof ("GLOBAL__I$")-1, SYM_CTOR, 0 }, | |
563 { "GLOBAL__D$", sizeof ("GLOBAL__D$")-1, SYM_DTOR, 0 }, | |
564 #else | |
565 #ifndef NO_DOT_IN_LABEL | |
566 { "GLOBAL__I.", sizeof ("GLOBAL__I.")-1, SYM_CTOR, 0 }, | |
567 { "GLOBAL__D.", sizeof ("GLOBAL__D.")-1, SYM_DTOR, 0 }, | |
568 #endif /* NO_DOT_IN_LABEL */ | |
569 #endif /* NO_DOLLAR_IN_LABEL */ | |
570 { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, SYM_CTOR, 0 }, | |
571 { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, SYM_DTOR, 0 }, | |
572 { "GLOBAL__F_", sizeof ("GLOBAL__F_")-1, SYM_DWEH, 0 }, | |
573 { "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, SYM_INIT, 0 }, | |
574 { "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, SYM_FINI, 0 }, | |
111 | 575 #ifdef TARGET_AIX_VERSION |
576 { "GLOBAL__AIXI_", sizeof ("GLOBAL__AIXI_")-1, SYM_AIXI, 0 }, | |
577 { "GLOBAL__AIXD_", sizeof ("GLOBAL__AIXD_")-1, SYM_AIXD, 0 }, | |
578 #endif | |
0 | 579 { NULL, 0, SYM_REGULAR, 0 } |
580 }; | |
581 | |
582 while ((ch = *s) == '_') | |
583 ++s; | |
584 | |
585 if (s == orig_s) | |
586 return SYM_REGULAR; | |
587 | |
588 for (p = &special[0]; p->len > 0; p++) | |
589 { | |
590 if (ch == p->name[0] | |
591 && (!p->two_underscores || ((s - orig_s) >= 2)) | |
111 | 592 && strncmp (s, p->name, p->len) == 0) |
0 | 593 { |
594 return p->ret; | |
595 } | |
596 } | |
597 return SYM_REGULAR; | |
598 } | |
599 | |
600 /* We maintain two prefix lists: one from COMPILER_PATH environment variable | |
601 and one from the PATH variable. */ | |
602 | |
603 static struct path_prefix cpath, path; | |
604 | |
605 #ifdef CROSS_DIRECTORY_STRUCTURE | |
606 /* This is the name of the target machine. We use it to form the name | |
607 of the files to execute. */ | |
608 | |
609 static const char *const target_machine = TARGET_MACHINE; | |
610 #endif | |
611 | |
612 /* Search for NAME using prefix list PPREFIX. We only look for executable | |
613 files. | |
614 | |
615 Return 0 if not found, otherwise return its name, allocated with malloc. */ | |
616 | |
131 | 617 #if defined (OBJECT_FORMAT_NONE) || defined (OBJECT_FORMAT_COFF) |
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618 |
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619 /* Add an entry for the object file NAME to object file list LIST. |
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620 New entries are added at the end of the list. The original pointer |
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621 value of NAME is preserved, i.e., no string copy is performed. */ |
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622 |
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623 static void |
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624 add_lto_object (struct lto_object_list *list, const char *name) |
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625 { |
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626 struct lto_object *n = XNEW (struct lto_object); |
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627 n->name = name; |
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628 n->next = NULL; |
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629 |
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630 if (list->last) |
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631 list->last->next = n; |
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632 else |
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633 list->first = n; |
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634 |
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635 list->last = n; |
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636 } |
131 | 637 #endif |
55
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638 |
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639 |
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640 /* Perform a link-time recompilation and relink if any of the object |
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641 files contain LTO info. The linker command line LTO_LD_ARGV |
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642 represents the linker command that would produce a final executable |
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643 without the use of LTO. OBJECT_LST is a vector of object file names |
111 | 644 appearing in LTO_LD_ARGV that are to be considered for link-time |
55
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645 recompilation, where OBJECT is a pointer to the last valid element. |
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646 (This awkward convention avoids an impedance mismatch with the |
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647 usage of similarly-named variables in main().) The elements of |
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648 OBJECT_LST must be identical, i.e., pointer equal, to the |
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649 corresponding arguments in LTO_LD_ARGV. |
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650 |
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651 Upon entry, at least one linker run has been performed without the |
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652 use of any LTO info that might be present. Any recompilations |
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653 necessary for template instantiations have been performed, and |
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654 initializer/finalizer tables have been created if needed and |
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655 included in the linker command line LTO_LD_ARGV. If any of the |
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656 object files contain LTO info, we run the LTO back end on all such |
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657 files, and perform the final link with the LTO back end output |
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658 substituted for the LTO-optimized files. In some cases, a final |
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659 link with all link-time generated code has already been performed, |
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660 so there is no need to relink if no LTO info is found. In other |
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661 cases, our caller has not produced the final executable, and is |
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662 relying on us to perform the required link whether LTO info is |
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663 present or not. In that case, the FORCE argument should be true. |
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664 Note that the linker command line argument LTO_LD_ARGV passed into |
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665 this function may be modified in place. */ |
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666 |
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667 static void |
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668 maybe_run_lto_and_relink (char **lto_ld_argv, char **object_lst, |
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669 const char **object, bool force) |
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670 { |
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671 const char **object_file = CONST_CAST2 (const char **, char **, object_lst); |
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672 |
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673 int num_lto_c_args = 1; /* Allow space for the terminating NULL. */ |
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674 |
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675 while (object_file < object) |
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676 { |
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677 /* If file contains LTO info, add it to the list of LTO objects. */ |
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678 scan_prog_file (*object_file++, PASS_LTOINFO, SCAN_ALL); |
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679 |
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680 /* Increment the argument count by the number of object file arguments |
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681 we will add. An upper bound suffices, so just count all of the |
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682 object files regardless of whether they contain LTO info. */ |
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683 num_lto_c_args++; |
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684 } |
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685 |
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686 if (lto_objects.first) |
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687 { |
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688 char **lto_c_argv; |
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689 const char **lto_c_ptr; |
67
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690 char **p; |
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691 char **lto_o_ptr; |
55
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692 struct lto_object *list; |
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693 char *lto_wrapper = getenv ("COLLECT_LTO_WRAPPER"); |
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694 struct pex_obj *pex; |
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695 const char *prog = "lto-wrapper"; |
67
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696 int lto_ld_argv_size = 0; |
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697 char **out_lto_ld_argv; |
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698 int out_lto_ld_argv_size; |
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699 size_t num_files; |
55
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700 |
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701 if (!lto_wrapper) |
111 | 702 fatal_error (input_location, "COLLECT_LTO_WRAPPER must be set"); |
55
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703 |
63
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704 num_lto_c_args++; |
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705 |
55
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706 /* There is at least one object file containing LTO info, |
67
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707 so we need to run the LTO back end and relink. |
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708 |
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709 To do so we build updated ld arguments with first |
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710 LTO object replaced by all partitions and other LTO |
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711 objects removed. */ |
55
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712 |
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713 lto_c_argv = (char **) xcalloc (sizeof (char *), num_lto_c_args); |
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714 lto_c_ptr = CONST_CAST2 (const char **, char **, lto_c_argv); |
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715 |
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716 *lto_c_ptr++ = lto_wrapper; |
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717 |
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718 /* Add LTO objects to the wrapper command line. */ |
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719 for (list = lto_objects.first; list; list = list->next) |
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720 *lto_c_ptr++ = list->name; |
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721 |
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722 *lto_c_ptr = NULL; |
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723 |
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724 /* Run the LTO back end. */ |
111 | 725 pex = collect_execute (prog, lto_c_argv, NULL, NULL, PEX_SEARCH, |
726 at_file_supplied); | |
55
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727 { |
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728 int c; |
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729 FILE *stream; |
67
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730 size_t i; |
55
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731 char *start, *end; |
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732 |
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733 stream = pex_read_output (pex, 0); |
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734 gcc_assert (stream); |
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735 |
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736 num_files = 0; |
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737 while ((c = getc (stream)) != EOF) |
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|
738 { |
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|
739 obstack_1grow (&temporary_obstack, c); |
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740 if (c == '\n') |
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741 ++num_files; |
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742 } |
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743 |
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744 lto_o_files = XNEWVEC (char *, num_files + 1); |
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745 lto_o_files[num_files] = NULL; |
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746 start = XOBFINISH (&temporary_obstack, char *); |
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|
747 for (i = 0; i < num_files; ++i) |
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748 { |
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749 end = start; |
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750 while (*end != '\n') |
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751 ++end; |
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752 *end = '\0'; |
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753 |
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754 lto_o_files[i] = xstrdup (start); |
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755 |
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756 start = end + 1; |
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757 } |
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758 |
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759 obstack_free (&temporary_obstack, temporary_firstobj); |
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760 } |
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761 do_wait (prog, pex); |
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762 pex = NULL; |
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763 |
111 | 764 /* Compute memory needed for new LD arguments. At most number of original arguments |
67
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765 plus number of partitions. */ |
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766 for (lto_ld_argv_size = 0; lto_ld_argv[lto_ld_argv_size]; lto_ld_argv_size++) |
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767 ; |
111 | 768 out_lto_ld_argv = XCNEWVEC (char *, num_files + lto_ld_argv_size + 1); |
67
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769 out_lto_ld_argv_size = 0; |
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770 |
55
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771 /* After running the LTO back end, we will relink, substituting |
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772 the LTO output for the object files that we submitted to the |
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773 LTO. Here, we modify the linker command line for the relink. */ |
67
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774 |
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775 /* Copy all arguments until we find first LTO file. */ |
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776 p = lto_ld_argv; |
55
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777 while (*p != NULL) |
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778 { |
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779 for (list = lto_objects.first; list; list = list->next) |
67
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780 if (*p == list->name) /* Note test for pointer equality! */ |
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781 break; |
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782 if (list) |
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783 break; |
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784 out_lto_ld_argv[out_lto_ld_argv_size++] = *p++; |
55
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785 } |
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786 |
67
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787 /* Now insert all LTO partitions. */ |
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788 lto_o_ptr = lto_o_files; |
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789 while (*lto_o_ptr) |
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790 out_lto_ld_argv[out_lto_ld_argv_size++] = *lto_o_ptr++; |
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791 |
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792 /* ... and copy the rest. */ |
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793 while (*p != NULL) |
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794 { |
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795 for (list = lto_objects.first; list; list = list->next) |
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796 if (*p == list->name) /* Note test for pointer equality! */ |
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797 break; |
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798 if (!list) |
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799 out_lto_ld_argv[out_lto_ld_argv_size++] = *p; |
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800 p++; |
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801 } |
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802 out_lto_ld_argv[out_lto_ld_argv_size++] = 0; |
55
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803 |
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804 /* Run the linker again, this time replacing the object files |
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805 optimized by the LTO with the temporary file generated by the LTO. */ |
111 | 806 fork_execute ("ld", out_lto_ld_argv, HAVE_GNU_LD && at_file_supplied); |
67
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807 post_ld_pass (true); |
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808 free (lto_ld_argv); |
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809 |
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810 maybe_unlink_list (lto_o_files); |
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811 } |
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812 else if (force) |
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813 { |
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814 /* Our caller is relying on us to do the link |
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815 even though there is no LTO back end work to be done. */ |
111 | 816 fork_execute ("ld", lto_ld_argv, HAVE_GNU_LD && at_file_supplied); |
67
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817 post_ld_pass (false); |
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818 } |
111 | 819 else |
820 post_ld_pass (true); | |
55
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821 } |
0 | 822 |
823 /* Main program. */ | |
824 | |
825 int | |
826 main (int argc, char **argv) | |
827 { | |
111 | 828 enum linker_select |
829 { | |
830 USE_DEFAULT_LD, | |
831 USE_PLUGIN_LD, | |
832 USE_GOLD_LD, | |
833 USE_BFD_LD, | |
834 USE_LD_MAX | |
835 } selected_linker = USE_DEFAULT_LD; | |
836 static const char *const ld_suffixes[USE_LD_MAX] = | |
837 { | |
838 "ld", | |
839 PLUGIN_LD_SUFFIX, | |
840 "ld.gold", | |
841 "ld.bfd" | |
842 }; | |
0 | 843 static const char *const real_ld_suffix = "real-ld"; |
844 static const char *const collect_ld_suffix = "collect-ld"; | |
845 static const char *const nm_suffix = "nm"; | |
846 static const char *const gnm_suffix = "gnm"; | |
847 #ifdef LDD_SUFFIX | |
848 static const char *const ldd_suffix = LDD_SUFFIX; | |
849 #endif | |
850 static const char *const strip_suffix = "strip"; | |
851 static const char *const gstrip_suffix = "gstrip"; | |
852 | |
111 | 853 const char *full_ld_suffixes[USE_LD_MAX]; |
0 | 854 #ifdef CROSS_DIRECTORY_STRUCTURE |
855 /* If we look for a program in the compiler directories, we just use | |
856 the short name, since these directories are already system-specific. | |
857 But it we look for a program in the system directories, we need to | |
858 qualify the program name with the target machine. */ | |
859 | |
860 const char *const full_nm_suffix = | |
861 concat (target_machine, "-", nm_suffix, NULL); | |
862 const char *const full_gnm_suffix = | |
863 concat (target_machine, "-", gnm_suffix, NULL); | |
864 #ifdef LDD_SUFFIX | |
865 const char *const full_ldd_suffix = | |
866 concat (target_machine, "-", ldd_suffix, NULL); | |
867 #endif | |
868 const char *const full_strip_suffix = | |
869 concat (target_machine, "-", strip_suffix, NULL); | |
870 const char *const full_gstrip_suffix = | |
871 concat (target_machine, "-", gstrip_suffix, NULL); | |
872 #else | |
873 #ifdef LDD_SUFFIX | |
874 const char *const full_ldd_suffix = ldd_suffix; | |
875 #endif | |
111 | 876 const char *const full_nm_suffix = nm_suffix; |
877 const char *const full_gnm_suffix = gnm_suffix; | |
0 | 878 const char *const full_strip_suffix = strip_suffix; |
879 const char *const full_gstrip_suffix = gstrip_suffix; | |
880 #endif /* CROSS_DIRECTORY_STRUCTURE */ | |
881 | |
882 const char *arg; | |
883 FILE *outf; | |
884 #ifdef COLLECT_EXPORT_LIST | |
885 FILE *exportf; | |
886 #endif | |
887 const char *ld_file_name; | |
888 const char *p; | |
889 char **c_argv; | |
890 const char **c_ptr; | |
891 char **ld1_argv; | |
892 const char **ld1; | |
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893 bool use_plugin = false; |
111 | 894 bool use_collect_ld = false; |
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895 |
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896 /* The kinds of symbols we will have to consider when scanning the |
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897 outcome of a first pass link. This is ALL to start with, then might |
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898 be adjusted before getting to the first pass link per se, typically on |
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899 AIX where we perform an early scan of objects and libraries to fetch |
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900 the list of global ctors/dtors and make sure they are not garbage |
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901 collected. */ |
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902 scanfilter ld1_filter = SCAN_ALL; |
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903 |
0 | 904 char **ld2_argv; |
905 const char **ld2; | |
906 char **object_lst; | |
907 const char **object; | |
111 | 908 #ifdef TARGET_AIX_VERSION |
909 int object_nbr = argc; | |
910 #endif | |
0 | 911 int first_file; |
912 int num_c_args; | |
913 char **old_argv; | |
131 | 914 #ifdef COLLECT_EXPORT_LIST |
915 bool is_static = false; | |
916 #endif | |
111 | 917 int i; |
918 | |
919 for (i = 0; i < USE_LD_MAX; i++) | |
920 full_ld_suffixes[i] | |
921 #ifdef CROSS_DIRECTORY_STRUCTURE | |
922 = concat (target_machine, "-", ld_suffixes[i], NULL); | |
923 #else | |
924 = ld_suffixes[i]; | |
925 #endif | |
926 | |
927 p = argv[0] + strlen (argv[0]); | |
928 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1])) | |
929 --p; | |
930 progname = p; | |
931 | |
932 xmalloc_set_program_name (progname); | |
0 | 933 |
934 old_argv = argv; | |
935 expandargv (&argc, &argv); | |
936 if (argv != old_argv) | |
937 at_file_supplied = 1; | |
938 | |
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939 process_args (&argc, argv); |
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940 |
0 | 941 num_c_args = argc + 9; |
942 | |
111 | 943 #ifndef HAVE_LD_DEMANGLE |
0 | 944 no_demangle = !! getenv ("COLLECT_NO_DEMANGLE"); |
945 | |
946 /* Suppress demangling by the real linker, which may be broken. */ | |
111 | 947 putenv (xstrdup ("COLLECT_NO_DEMANGLE=1")); |
948 #endif | |
0 | 949 |
950 #if defined (COLLECT2_HOST_INITIALIZATION) | |
951 /* Perform system dependent initialization, if necessary. */ | |
952 COLLECT2_HOST_INITIALIZATION; | |
953 #endif | |
954 | |
955 #ifdef SIGCHLD | |
956 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will | |
957 receive the signal. A different setting is inheritable */ | |
958 signal (SIGCHLD, SIG_DFL); | |
959 #endif | |
960 | |
961 /* Unlock the stdio streams. */ | |
962 unlock_std_streams (); | |
963 | |
964 gcc_init_libintl (); | |
965 | |
111 | 966 diagnostic_initialize (global_dc, 0); |
967 | |
968 if (atexit (collect_atexit) != 0) | |
969 fatal_error (input_location, "atexit failed"); | |
970 | |
0 | 971 /* Do not invoke xcalloc before this point, since locale needs to be |
972 set first, in case a diagnostic is issued. */ | |
973 | |
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974 ld1_argv = XCNEWVEC (char *, argc + 4); |
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975 ld1 = CONST_CAST2 (const char **, char **, ld1_argv); |
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976 ld2_argv = XCNEWVEC (char *, argc + 11); |
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977 ld2 = CONST_CAST2 (const char **, char **, ld2_argv); |
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978 object_lst = XCNEWVEC (char *, argc); |
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979 object = CONST_CAST2 (const char **, char **, object_lst); |
0 | 980 |
981 #ifdef DEBUG | |
982 debug = 1; | |
983 #endif | |
984 | |
985 /* Parse command line early for instances of -debug. This allows | |
986 the debug flag to be set before functions like find_a_file() | |
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987 are called. We also look for the -flto or -flto-partition=none flag to know |
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988 what LTO mode we are in. */ |
0 | 989 { |
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990 bool no_partition = false; |
0 | 991 |
992 for (i = 1; argv[i] != NULL; i ++) | |
993 { | |
994 if (! strcmp (argv[i], "-debug")) | |
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995 debug = true; |
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996 else if (! strcmp (argv[i], "-flto-partition=none")) |
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997 no_partition = true; |
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998 else if (!strncmp (argv[i], "-fno-lto", 8)) |
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999 lto_mode = LTO_MODE_NONE; |
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1000 else if (! strcmp (argv[i], "-plugin")) |
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1001 { |
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1002 use_plugin = true; |
111 | 1003 if (selected_linker == USE_DEFAULT_LD) |
1004 selected_linker = USE_PLUGIN_LD; | |
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1005 } |
111 | 1006 else if (strcmp (argv[i], "-fuse-ld=bfd") == 0) |
1007 selected_linker = USE_BFD_LD; | |
1008 else if (strcmp (argv[i], "-fuse-ld=gold") == 0) | |
1009 selected_linker = USE_GOLD_LD; | |
1010 | |
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1011 #ifdef COLLECT_EXPORT_LIST |
111 | 1012 /* These flags are position independent, although their order |
1013 is important - subsequent flags override earlier ones. */ | |
1014 else if (strcmp (argv[i], "-b64") == 0) | |
1015 aix64_flag = 1; | |
1016 /* -bexport:filename always needs the :filename */ | |
1017 else if (strncmp (argv[i], "-bE:", 4) == 0 | |
1018 || strncmp (argv[i], "-bexport:", 9) == 0) | |
1019 export_flag = 1; | |
1020 else if (strcmp (argv[i], "-brtl") == 0 | |
1021 || strcmp (argv[i], "-bsvr4") == 0 | |
1022 || strcmp (argv[i], "-G") == 0) | |
1023 aixrtl_flag = 1; | |
1024 else if (strcmp (argv[i], "-bnortl") == 0) | |
1025 aixrtl_flag = 0; | |
1026 else if (strcmp (argv[i], "-blazy") == 0) | |
1027 aixlazy_flag = 1; | |
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1028 #endif |
0 | 1029 } |
111 | 1030 verbose = debug; |
1031 find_file_set_debug (debug); | |
1032 if (use_plugin) | |
1033 lto_mode = LTO_MODE_NONE; | |
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1034 if (no_partition && lto_mode == LTO_MODE_WHOPR) |
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1035 lto_mode = LTO_MODE_LTO; |
0 | 1036 } |
1037 | |
1038 #ifndef DEFAULT_A_OUT_NAME | |
1039 output_file = "a.out"; | |
1040 #else | |
1041 output_file = DEFAULT_A_OUT_NAME; | |
1042 #endif | |
1043 | |
1044 obstack_begin (&temporary_obstack, 0); | |
1045 temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0); | |
1046 | |
1047 #ifndef HAVE_LD_DEMANGLE | |
1048 current_demangling_style = auto_demangling; | |
1049 #endif | |
1050 p = getenv ("COLLECT_GCC_OPTIONS"); | |
1051 while (p && *p) | |
1052 { | |
1053 const char *q = extract_string (&p); | |
1054 if (*q == '-' && (q[1] == 'm' || q[1] == 'f')) | |
1055 num_c_args++; | |
1056 } | |
1057 obstack_free (&temporary_obstack, temporary_firstobj); | |
1058 | |
1059 /* -fno-profile-arcs -fno-test-coverage -fno-branch-probabilities | |
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1060 -fno-exceptions -w -fno-whole-program */ |
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1061 num_c_args += 6; |
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1062 |
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1063 c_argv = XCNEWVEC (char *, num_c_args); |
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1064 c_ptr = CONST_CAST2 (const char **, char **, c_argv); |
0 | 1065 |
1066 if (argc < 2) | |
111 | 1067 fatal_error (input_location, "no arguments"); |
0 | 1068 |
1069 #ifdef SIGQUIT | |
1070 if (signal (SIGQUIT, SIG_IGN) != SIG_IGN) | |
1071 signal (SIGQUIT, handler); | |
1072 #endif | |
1073 if (signal (SIGINT, SIG_IGN) != SIG_IGN) | |
1074 signal (SIGINT, handler); | |
1075 #ifdef SIGALRM | |
1076 if (signal (SIGALRM, SIG_IGN) != SIG_IGN) | |
1077 signal (SIGALRM, handler); | |
1078 #endif | |
1079 #ifdef SIGHUP | |
1080 if (signal (SIGHUP, SIG_IGN) != SIG_IGN) | |
1081 signal (SIGHUP, handler); | |
1082 #endif | |
1083 if (signal (SIGSEGV, SIG_IGN) != SIG_IGN) | |
1084 signal (SIGSEGV, handler); | |
1085 #ifdef SIGBUS | |
1086 if (signal (SIGBUS, SIG_IGN) != SIG_IGN) | |
1087 signal (SIGBUS, handler); | |
1088 #endif | |
1089 | |
1090 /* Extract COMPILER_PATH and PATH into our prefix list. */ | |
1091 prefix_from_env ("COMPILER_PATH", &cpath); | |
1092 prefix_from_env ("PATH", &path); | |
1093 | |
1094 /* Try to discover a valid linker/nm/strip to use. */ | |
1095 | |
1096 /* Maybe we know the right file to use (if not cross). */ | |
1097 ld_file_name = 0; | |
1098 #ifdef DEFAULT_LINKER | |
111 | 1099 if (selected_linker == USE_BFD_LD || selected_linker == USE_GOLD_LD) |
1100 { | |
1101 char *linker_name; | |
1102 # ifdef HOST_EXECUTABLE_SUFFIX | |
1103 int len = (sizeof (DEFAULT_LINKER) | |
1104 - sizeof (HOST_EXECUTABLE_SUFFIX)); | |
1105 linker_name = NULL; | |
1106 if (len > 0) | |
1107 { | |
1108 char *default_linker = xstrdup (DEFAULT_LINKER); | |
1109 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains | |
1110 HOST_EXECUTABLE_SUFFIX. */ | |
1111 if (! strcmp (&default_linker[len], HOST_EXECUTABLE_SUFFIX)) | |
1112 { | |
1113 default_linker[len] = '\0'; | |
1114 linker_name = concat (default_linker, | |
1115 &ld_suffixes[selected_linker][2], | |
1116 HOST_EXECUTABLE_SUFFIX, NULL); | |
1117 } | |
1118 } | |
1119 if (linker_name == NULL) | |
1120 # endif | |
1121 linker_name = concat (DEFAULT_LINKER, | |
1122 &ld_suffixes[selected_linker][2], | |
1123 NULL); | |
1124 if (access (linker_name, X_OK) == 0) | |
1125 ld_file_name = linker_name; | |
1126 } | |
1127 if (ld_file_name == 0 && access (DEFAULT_LINKER, X_OK) == 0) | |
0 | 1128 ld_file_name = DEFAULT_LINKER; |
1129 if (ld_file_name == 0) | |
1130 #endif | |
1131 #ifdef REAL_LD_FILE_NAME | |
111 | 1132 ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME, X_OK); |
0 | 1133 if (ld_file_name == 0) |
1134 #endif | |
1135 /* Search the (target-specific) compiler dirs for ld'. */ | |
111 | 1136 ld_file_name = find_a_file (&cpath, real_ld_suffix, X_OK); |
0 | 1137 /* Likewise for `collect-ld'. */ |
1138 if (ld_file_name == 0) | |
111 | 1139 { |
1140 ld_file_name = find_a_file (&cpath, collect_ld_suffix, X_OK); | |
1141 use_collect_ld = ld_file_name != 0; | |
1142 } | |
0 | 1143 /* Search the compiler directories for `ld'. We have protection against |
1144 recursive calls in find_a_file. */ | |
1145 if (ld_file_name == 0) | |
111 | 1146 ld_file_name = find_a_file (&cpath, ld_suffixes[selected_linker], X_OK); |
0 | 1147 /* Search the ordinary system bin directories |
1148 for `ld' (if native linking) or `TARGET-ld' (if cross). */ | |
1149 if (ld_file_name == 0) | |
111 | 1150 ld_file_name = find_a_file (&path, full_ld_suffixes[selected_linker], X_OK); |
0 | 1151 |
1152 #ifdef REAL_NM_FILE_NAME | |
111 | 1153 nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME, X_OK); |
0 | 1154 if (nm_file_name == 0) |
1155 #endif | |
111 | 1156 nm_file_name = find_a_file (&cpath, gnm_suffix, X_OK); |
0 | 1157 if (nm_file_name == 0) |
111 | 1158 nm_file_name = find_a_file (&path, full_gnm_suffix, X_OK); |
0 | 1159 if (nm_file_name == 0) |
111 | 1160 nm_file_name = find_a_file (&cpath, nm_suffix, X_OK); |
0 | 1161 if (nm_file_name == 0) |
111 | 1162 nm_file_name = find_a_file (&path, full_nm_suffix, X_OK); |
0 | 1163 |
1164 #ifdef LDD_SUFFIX | |
111 | 1165 ldd_file_name = find_a_file (&cpath, ldd_suffix, X_OK); |
0 | 1166 if (ldd_file_name == 0) |
111 | 1167 ldd_file_name = find_a_file (&path, full_ldd_suffix, X_OK); |
0 | 1168 #endif |
1169 | |
1170 #ifdef REAL_STRIP_FILE_NAME | |
111 | 1171 strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME, X_OK); |
0 | 1172 if (strip_file_name == 0) |
1173 #endif | |
111 | 1174 strip_file_name = find_a_file (&cpath, gstrip_suffix, X_OK); |
0 | 1175 if (strip_file_name == 0) |
111 | 1176 strip_file_name = find_a_file (&path, full_gstrip_suffix, X_OK); |
0 | 1177 if (strip_file_name == 0) |
111 | 1178 strip_file_name = find_a_file (&cpath, strip_suffix, X_OK); |
0 | 1179 if (strip_file_name == 0) |
111 | 1180 strip_file_name = find_a_file (&path, full_strip_suffix, X_OK); |
0 | 1181 |
1182 /* Determine the full path name of the C compiler to use. */ | |
1183 c_file_name = getenv ("COLLECT_GCC"); | |
1184 if (c_file_name == 0) | |
1185 { | |
1186 #ifdef CROSS_DIRECTORY_STRUCTURE | |
1187 c_file_name = concat (target_machine, "-gcc", NULL); | |
1188 #else | |
1189 c_file_name = "gcc"; | |
1190 #endif | |
1191 } | |
1192 | |
111 | 1193 p = find_a_file (&cpath, c_file_name, X_OK); |
0 | 1194 |
1195 /* Here it should be safe to use the system search path since we should have | |
1196 already qualified the name of the compiler when it is needed. */ | |
1197 if (p == 0) | |
111 | 1198 p = find_a_file (&path, c_file_name, X_OK); |
0 | 1199 |
1200 if (p) | |
1201 c_file_name = p; | |
1202 | |
1203 *ld1++ = *ld2++ = ld_file_name; | |
1204 | |
1205 /* Make temp file names. */ | |
1206 c_file = make_temp_file (".c"); | |
1207 o_file = make_temp_file (".o"); | |
1208 #ifdef COLLECT_EXPORT_LIST | |
1209 export_file = make_temp_file (".x"); | |
1210 #endif | |
111 | 1211 if (!debug) |
1212 { | |
1213 ldout = make_temp_file (".ld"); | |
1214 lderrout = make_temp_file (".le"); | |
1215 } | |
0 | 1216 *c_ptr++ = c_file_name; |
1217 *c_ptr++ = "-x"; | |
1218 *c_ptr++ = "c"; | |
1219 *c_ptr++ = "-c"; | |
1220 *c_ptr++ = "-o"; | |
1221 *c_ptr++ = o_file; | |
1222 | |
1223 #ifdef COLLECT_EXPORT_LIST | |
1224 /* Generate a list of directories from LIBPATH. */ | |
1225 prefix_from_env ("LIBPATH", &libpath_lib_dirs); | |
1226 /* Add to this list also two standard directories where | |
1227 AIX loader always searches for libraries. */ | |
1228 add_prefix (&libpath_lib_dirs, "/lib"); | |
1229 add_prefix (&libpath_lib_dirs, "/usr/lib"); | |
1230 #endif | |
1231 | |
1232 /* Get any options that the upper GCC wants to pass to the sub-GCC. | |
1233 | |
1234 AIX support needs to know if -shared has been specified before | |
1235 parsing commandline arguments. */ | |
1236 | |
1237 p = getenv ("COLLECT_GCC_OPTIONS"); | |
1238 while (p && *p) | |
1239 { | |
1240 const char *q = extract_string (&p); | |
1241 if (*q == '-' && (q[1] == 'm' || q[1] == 'f')) | |
1242 *c_ptr++ = xstrdup (q); | |
1243 if (strcmp (q, "-EL") == 0 || strcmp (q, "-EB") == 0) | |
1244 *c_ptr++ = xstrdup (q); | |
1245 if (strcmp (q, "-shared") == 0) | |
1246 shared_obj = 1; | |
131 | 1247 if (strcmp (q, "-static") == 0) |
1248 static_obj = 1; | |
0 | 1249 if (*q == '-' && q[1] == 'B') |
1250 { | |
1251 *c_ptr++ = xstrdup (q); | |
1252 if (q[2] == 0) | |
1253 { | |
1254 q = extract_string (&p); | |
1255 *c_ptr++ = xstrdup (q); | |
1256 } | |
1257 } | |
1258 } | |
1259 obstack_free (&temporary_obstack, temporary_firstobj); | |
1260 *c_ptr++ = "-fno-profile-arcs"; | |
1261 *c_ptr++ = "-fno-test-coverage"; | |
1262 *c_ptr++ = "-fno-branch-probabilities"; | |
1263 *c_ptr++ = "-fno-exceptions"; | |
1264 *c_ptr++ = "-w"; | |
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1265 *c_ptr++ = "-fno-whole-program"; |
0 | 1266 |
1267 /* !!! When GCC calls collect2, | |
1268 it does not know whether it is calling collect2 or ld. | |
1269 So collect2 cannot meaningfully understand any options | |
1270 except those ld understands. | |
1271 If you propose to make GCC pass some other option, | |
1272 just imagine what will happen if ld is really ld!!! */ | |
1273 | |
1274 /* Parse arguments. Remember output file spec, pass the rest to ld. */ | |
1275 /* After the first file, put in the c++ rt0. */ | |
1276 | |
131 | 1277 #ifdef COLLECT_EXPORT_LIST |
1278 is_static = static_obj; | |
1279 #endif | |
0 | 1280 first_file = 1; |
1281 while ((arg = *++argv) != (char *) 0) | |
1282 { | |
1283 *ld1++ = *ld2++ = arg; | |
1284 | |
1285 if (arg[0] == '-') | |
1286 { | |
1287 switch (arg[1]) | |
1288 { | |
1289 case 'd': | |
1290 if (!strcmp (arg, "-debug")) | |
1291 { | |
1292 /* Already parsed. */ | |
1293 ld1--; | |
1294 ld2--; | |
1295 } | |
1296 if (!strcmp (arg, "-dynamic-linker") && argv[1]) | |
1297 { | |
1298 ++argv; | |
1299 *ld1++ = *ld2++ = *argv; | |
1300 } | |
1301 break; | |
1302 | |
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1303 case 'f': |
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1304 if (strncmp (arg, "-flto", 5) == 0) |
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1305 { |
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1306 #ifdef ENABLE_LTO |
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1307 /* Do not pass LTO flag to the linker. */ |
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1308 ld1--; |
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1309 ld2--; |
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1310 #else |
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1311 error ("LTO support has not been enabled in this " |
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1312 "configuration"); |
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1313 #endif |
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1314 } |
111 | 1315 else if (!use_collect_ld |
1316 && strncmp (arg, "-fuse-ld=", 9) == 0) | |
1317 { | |
1318 /* Do not pass -fuse-ld={bfd|gold} to the linker. */ | |
1319 ld1--; | |
1320 ld2--; | |
1321 } | |
1322 else if (strncmp (arg, "-fno-lto", 8) == 0) | |
1323 { | |
1324 /* Do not pass -fno-lto to the linker. */ | |
1325 ld1--; | |
1326 ld2--; | |
1327 } | |
1328 #ifdef TARGET_AIX_VERSION | |
1329 else | |
1330 { | |
1331 /* File containing a list of input files to process. */ | |
1332 | |
1333 FILE *stream; | |
1334 char buf[MAXPATHLEN + 2]; | |
1335 /* Number of additionnal object files. */ | |
1336 int add_nbr = 0; | |
1337 /* Maximum of additionnal object files before vector | |
1338 expansion. */ | |
1339 int add_max = 0; | |
1340 const char *list_filename = arg + 2; | |
1341 | |
1342 /* Accept -fFILENAME and -f FILENAME. */ | |
1343 if (*list_filename == '\0' && argv[1]) | |
1344 { | |
1345 ++argv; | |
1346 list_filename = *argv; | |
1347 *ld1++ = *ld2++ = *argv; | |
1348 } | |
1349 | |
1350 stream = fopen (list_filename, "r"); | |
1351 if (stream == NULL) | |
1352 fatal_error (input_location, "can't open %s: %m", | |
1353 list_filename); | |
1354 | |
1355 while (fgets (buf, sizeof buf, stream) != NULL) | |
1356 { | |
1357 /* Remove end of line. */ | |
1358 int len = strlen (buf); | |
1359 if (len >= 1 && buf[len - 1] =='\n') | |
1360 buf[len - 1] = '\0'; | |
1361 | |
1362 /* Put on object vector. | |
1363 Note: we only expanse vector here, so we must keep | |
1364 extra space for remaining arguments. */ | |
1365 if (add_nbr >= add_max) | |
1366 { | |
1367 int pos = | |
1368 object - CONST_CAST2 (const char **, char **, | |
1369 object_lst); | |
1370 add_max = (add_max == 0) ? 16 : add_max * 2; | |
1371 object_lst = XRESIZEVEC (char *, object_lst, | |
1372 object_nbr + add_max); | |
1373 object = CONST_CAST2 (const char **, char **, | |
1374 object_lst) + pos; | |
1375 object_nbr += add_max; | |
1376 } | |
1377 *object++ = xstrdup (buf); | |
1378 add_nbr++; | |
1379 } | |
1380 fclose (stream); | |
1381 } | |
1382 #endif | |
55
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1383 break; |
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1384 |
131 | 1385 #ifdef COLLECT_EXPORT_LIST |
1386 case 'b': | |
1387 if (!strcmp (arg, "-bstatic")) | |
1388 { | |
1389 is_static = true; | |
1390 } | |
1391 else if (!strcmp (arg, "-bdynamic") || !strcmp (arg, "-bshared")) | |
1392 { | |
1393 is_static = false; | |
1394 } | |
1395 break; | |
1396 #endif | |
0 | 1397 case 'l': |
1398 if (first_file) | |
1399 { | |
1400 /* place o_file BEFORE this argument! */ | |
1401 first_file = 0; | |
1402 ld2--; | |
1403 *ld2++ = o_file; | |
1404 *ld2++ = arg; | |
1405 } | |
1406 #ifdef COLLECT_EXPORT_LIST | |
1407 { | |
1408 /* Resolving full library name. */ | |
1409 const char *s = resolve_lib_name (arg+2); | |
1410 | |
1411 /* Saving a full library name. */ | |
1412 add_to_list (&libs, s); | |
131 | 1413 if (is_static) |
1414 add_to_list (&static_libs, s); | |
0 | 1415 } |
1416 #endif | |
1417 break; | |
1418 | |
1419 #ifdef COLLECT_EXPORT_LIST | |
1420 /* Saving directories where to search for libraries. */ | |
1421 case 'L': | |
1422 add_prefix (&cmdline_lib_dirs, arg+2); | |
1423 break; | |
1424 #endif | |
1425 | |
1426 case 'o': | |
1427 if (arg[2] == '\0') | |
1428 output_file = *ld1++ = *ld2++ = *++argv; | |
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1429 else |
0 | 1430 output_file = &arg[2]; |
1431 break; | |
1432 | |
1433 case 'r': | |
1434 if (arg[2] == '\0') | |
1435 rflag = 1; | |
1436 break; | |
1437 | |
1438 case 's': | |
1439 if (arg[2] == '\0' && do_collecting) | |
1440 { | |
1441 /* We must strip after the nm run, otherwise C++ linking | |
1442 will not work. Thus we strip in the second ld run, or | |
1443 else with strip if there is no second ld run. */ | |
1444 strip_flag = 1; | |
1445 ld1--; | |
1446 } | |
1447 break; | |
1448 | |
1449 case 'v': | |
1450 if (arg[2] == '\0') | |
111 | 1451 verbose = true; |
0 | 1452 break; |
1453 | |
1454 case '-': | |
1455 if (strcmp (arg, "--no-demangle") == 0) | |
1456 { | |
111 | 1457 #ifndef HAVE_LD_DEMANGLE |
0 | 1458 no_demangle = 1; |
1459 ld1--; | |
1460 ld2--; | |
111 | 1461 #endif |
0 | 1462 } |
1463 else if (strncmp (arg, "--demangle", 10) == 0) | |
1464 { | |
111 | 1465 #ifndef HAVE_LD_DEMANGLE |
0 | 1466 no_demangle = 0; |
1467 if (arg[10] == '=') | |
1468 { | |
1469 enum demangling_styles style | |
1470 = cplus_demangle_name_to_style (arg+11); | |
1471 if (style == unknown_demangling) | |
1472 error ("unknown demangling style '%s'", arg+11); | |
1473 else | |
1474 current_demangling_style = style; | |
1475 } | |
1476 ld1--; | |
1477 ld2--; | |
111 | 1478 #endif |
0 | 1479 } |
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1480 else if (strncmp (arg, "--sysroot=", 10) == 0) |
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1481 target_system_root = arg + 10; |
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1482 else if (strcmp (arg, "--version") == 0) |
111 | 1483 verbose = true; |
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1484 else if (strcmp (arg, "--help") == 0) |
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1485 helpflag = true; |
0 | 1486 break; |
1487 } | |
1488 } | |
1489 else if ((p = strrchr (arg, '.')) != (char *) 0 | |
1490 && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0 | |
1491 || strcmp (p, ".so") == 0 || strcmp (p, ".lo") == 0 | |
1492 || strcmp (p, ".obj") == 0)) | |
1493 { | |
1494 if (first_file) | |
1495 { | |
1496 first_file = 0; | |
1497 if (p[1] == 'o') | |
1498 *ld2++ = o_file; | |
1499 else | |
1500 { | |
1501 /* place o_file BEFORE this argument! */ | |
1502 ld2--; | |
1503 *ld2++ = o_file; | |
1504 *ld2++ = arg; | |
1505 } | |
1506 } | |
1507 if (p[1] == 'o' || p[1] == 'l') | |
1508 *object++ = arg; | |
1509 #ifdef COLLECT_EXPORT_LIST | |
1510 /* libraries can be specified directly, i.e. without -l flag. */ | |
1511 else | |
1512 { | |
1513 /* Saving a full library name. */ | |
1514 add_to_list (&libs, arg); | |
131 | 1515 if (is_static) |
1516 add_to_list (&static_libs, arg); | |
0 | 1517 } |
1518 #endif | |
1519 } | |
1520 } | |
1521 | |
1522 #ifdef COLLECT_EXPORT_LIST | |
1523 /* This is added only for debugging purposes. */ | |
1524 if (debug) | |
1525 { | |
1526 fprintf (stderr, "List of libraries:\n"); | |
1527 dump_list (stderr, "\t", libs.first); | |
131 | 1528 fprintf (stderr, "List of statically linked libraries:\n"); |
1529 dump_list (stderr, "\t", static_libs.first); | |
0 | 1530 } |
1531 | |
1532 /* The AIX linker will discard static constructors in object files if | |
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1533 nothing else in the file is referenced, so look at them first. Unless |
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1534 we are building a shared object, ignore the eh frame tables, as we |
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1535 would otherwise reference them all, hence drag all the corresponding |
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1536 objects even if nothing else is referenced. */ |
0 | 1537 { |
55
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1538 const char **export_object_lst |
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1539 = CONST_CAST2 (const char **, char **, object_lst); |
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1540 |
0 | 1541 struct id *list = libs.first; |
1542 | |
55
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1543 /* Compute the filter to use from the current one, do scan, then adjust |
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1544 the "current" filter to remove what we just included here. This will |
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1545 control whether we need a first pass link later on or not, and what |
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1546 will remain to be scanned there. */ |
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1547 |
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1548 scanfilter this_filter = ld1_filter; |
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1549 #if HAVE_AS_REF |
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1550 if (!shared_obj) |
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1551 this_filter &= ~SCAN_DWEH; |
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1552 #endif |
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1553 |
131 | 1554 /* Scan object files. */ |
55
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1555 while (export_object_lst < object) |
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1556 scan_prog_file (*export_object_lst++, PASS_OBJ, this_filter); |
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1557 |
131 | 1558 /* Scan libraries. */ |
0 | 1559 for (; list; list = list->next) |
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1560 scan_prog_file (list->name, PASS_FIRST, this_filter); |
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1561 |
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1562 ld1_filter = ld1_filter & ~this_filter; |
0 | 1563 } |
1564 | |
1565 if (exports.first) | |
1566 { | |
1567 char *buf = concat ("-bE:", export_file, NULL); | |
1568 | |
1569 *ld1++ = buf; | |
1570 *ld2++ = buf; | |
1571 | |
1572 exportf = fopen (export_file, "w"); | |
1573 if (exportf == (FILE *) 0) | |
111 | 1574 fatal_error (input_location, "fopen %s: %m", export_file); |
0 | 1575 write_aix_file (exportf, exports.first); |
1576 if (fclose (exportf)) | |
111 | 1577 fatal_error (input_location, "fclose %s: %m", export_file); |
0 | 1578 } |
1579 #endif | |
1580 | |
1581 *c_ptr++ = c_file; | |
1582 *c_ptr = *ld1 = *object = (char *) 0; | |
1583 | |
111 | 1584 if (verbose) |
1585 notice ("collect2 version %s\n", version_string); | |
0 | 1586 |
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1587 if (helpflag) |
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1588 { |
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1589 printf ("Usage: collect2 [options]\n"); |
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1590 printf (" Wrap linker and generate constructor code if needed.\n"); |
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1591 printf (" Options:\n"); |
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1592 printf (" -debug Enable debug output\n"); |
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1593 printf (" --help Display this information\n"); |
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1594 printf (" -v, --version Display this program's version number\n"); |
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1595 printf ("\n"); |
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1596 printf ("Overview: http://gcc.gnu.org/onlinedocs/gccint/Collect2.html\n"); |
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1597 printf ("Report bugs: %s\n", bug_report_url); |
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1598 printf ("\n"); |
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1599 } |
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1600 |
0 | 1601 if (debug) |
1602 { | |
1603 const char *ptr; | |
1604 fprintf (stderr, "ld_file_name = %s\n", | |
1605 (ld_file_name ? ld_file_name : "not found")); | |
1606 fprintf (stderr, "c_file_name = %s\n", | |
1607 (c_file_name ? c_file_name : "not found")); | |
1608 fprintf (stderr, "nm_file_name = %s\n", | |
1609 (nm_file_name ? nm_file_name : "not found")); | |
1610 #ifdef LDD_SUFFIX | |
1611 fprintf (stderr, "ldd_file_name = %s\n", | |
1612 (ldd_file_name ? ldd_file_name : "not found")); | |
1613 #endif | |
1614 fprintf (stderr, "strip_file_name = %s\n", | |
1615 (strip_file_name ? strip_file_name : "not found")); | |
1616 fprintf (stderr, "c_file = %s\n", | |
1617 (c_file ? c_file : "not found")); | |
1618 fprintf (stderr, "o_file = %s\n", | |
1619 (o_file ? o_file : "not found")); | |
1620 | |
1621 ptr = getenv ("COLLECT_GCC_OPTIONS"); | |
1622 if (ptr) | |
1623 fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr); | |
1624 | |
1625 ptr = getenv ("COLLECT_GCC"); | |
1626 if (ptr) | |
1627 fprintf (stderr, "COLLECT_GCC = %s\n", ptr); | |
1628 | |
1629 ptr = getenv ("COMPILER_PATH"); | |
1630 if (ptr) | |
1631 fprintf (stderr, "COMPILER_PATH = %s\n", ptr); | |
1632 | |
1633 ptr = getenv (LIBRARY_PATH_ENV); | |
1634 if (ptr) | |
1635 fprintf (stderr, "%-20s= %s\n", LIBRARY_PATH_ENV, ptr); | |
1636 | |
1637 fprintf (stderr, "\n"); | |
1638 } | |
1639 | |
1640 /* Load the program, searching all libraries and attempting to provide | |
55
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|
1641 undefined symbols from repository information. |
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|
1642 |
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|
1643 If -r or they will be run via some other method, do not build the |
0 | 1644 constructor or destructor list, just return now. */ |
55
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|
1645 { |
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|
1646 bool early_exit |
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|
1647 = rflag || (! DO_COLLECT_EXPORT_LIST && ! do_collecting); |
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|
1648 |
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1649 /* Perform the first pass link now, if we're about to exit or if we need |
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1650 to scan for things we haven't collected yet before pursuing further. |
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1651 |
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1652 On AIX, the latter typically includes nothing for shared objects or |
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|
1653 frame tables for an executable, out of what the required early scan on |
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1654 objects and libraries has performed above. In the !shared_obj case, we |
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1655 expect the relevant tables to be dragged together with their associated |
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|
1656 functions from precise cross reference insertions by the compiler. */ |
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|
1657 |
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|
1658 if (early_exit || ld1_filter != SCAN_NOTHING) |
0 | 1659 do_tlink (ld1_argv, object_lst); |
1660 | |
55
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1661 if (early_exit) |
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|
1662 { |
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|
1663 #ifdef COLLECT_EXPORT_LIST |
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1664 /* Make sure we delete the export file we may have created. */ |
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1665 if (export_file != 0 && export_file[0]) |
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|
1666 maybe_unlink (export_file); |
0 | 1667 #endif |
63
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|
1668 if (lto_mode != LTO_MODE_NONE) |
55
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|
1669 maybe_run_lto_and_relink (ld1_argv, object_lst, object, false); |
67
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|
1670 else |
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1671 post_ld_pass (false); |
55
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1672 |
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|
1673 maybe_unlink (c_file); |
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1674 maybe_unlink (o_file); |
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1675 return 0; |
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|
1676 } |
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|
1677 } |
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1678 |
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1679 /* Unless we have done it all already, examine the namelist and search for |
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|
1680 static constructors and destructors to call. Write the constructor and |
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|
1681 destructor tables to a .s file and reload. */ |
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1682 |
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1683 if (ld1_filter != SCAN_NOTHING) |
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|
1684 scan_prog_file (output_file, PASS_FIRST, ld1_filter); |
0 | 1685 |
1686 #ifdef SCAN_LIBRARIES | |
1687 scan_libraries (output_file); | |
1688 #endif | |
1689 | |
1690 if (debug) | |
1691 { | |
63
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1692 notice_translated (ngettext ("%d constructor found\n", |
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1693 "%d constructors found\n", |
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|
1694 constructors.number), |
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|
1695 constructors.number); |
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1696 notice_translated (ngettext ("%d destructor found\n", |
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1697 "%d destructors found\n", |
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|
1698 destructors.number), |
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1699 destructors.number); |
111 | 1700 notice_translated (ngettext ("%d frame table found\n", |
1701 "%d frame tables found\n", | |
1702 frame_tables.number), | |
63
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1703 frame_tables.number); |
0 | 1704 } |
1705 | |
55
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1706 /* If the scan exposed nothing of special interest, there's no need to |
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1707 generate the glue code and relink so return now. */ |
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1708 |
0 | 1709 if (constructors.number == 0 && destructors.number == 0 |
1710 && frame_tables.number == 0 | |
1711 #if defined (SCAN_LIBRARIES) || defined (COLLECT_EXPORT_LIST) | |
1712 /* If we will be running these functions ourselves, we want to emit | |
1713 stubs into the shared library so that we do not have to relink | |
1714 dependent programs when we add static objects. */ | |
1715 && ! shared_obj | |
1716 #endif | |
1717 ) | |
1718 { | |
55
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1719 /* Do tlink without additional code generation now if we didn't |
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1720 do it earlier for scanning purposes. */ |
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1721 if (ld1_filter == SCAN_NOTHING) |
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|
1722 do_tlink (ld1_argv, object_lst); |
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|
1723 |
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1724 if (lto_mode) |
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|
1725 maybe_run_lto_and_relink (ld1_argv, object_lst, object, false); |
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|
1726 |
0 | 1727 /* Strip now if it was requested on the command line. */ |
1728 if (strip_flag) | |
1729 { | |
1730 char **real_strip_argv = XCNEWVEC (char *, 3); | |
55
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|
1731 const char ** strip_argv = CONST_CAST2 (const char **, char **, |
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|
1732 real_strip_argv); |
0 | 1733 |
1734 strip_argv[0] = strip_file_name; | |
1735 strip_argv[1] = output_file; | |
1736 strip_argv[2] = (char *) 0; | |
111 | 1737 fork_execute ("strip", real_strip_argv, false); |
0 | 1738 } |
1739 | |
1740 #ifdef COLLECT_EXPORT_LIST | |
1741 maybe_unlink (export_file); | |
1742 #endif | |
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|
1743 post_ld_pass (false); |
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1744 |
0 | 1745 maybe_unlink (c_file); |
1746 maybe_unlink (o_file); | |
1747 return 0; | |
1748 } | |
1749 | |
1750 /* Sort ctor and dtor lists by priority. */ | |
1751 sort_ids (&constructors); | |
1752 sort_ids (&destructors); | |
1753 | |
111 | 1754 maybe_unlink (output_file); |
0 | 1755 outf = fopen (c_file, "w"); |
1756 if (outf == (FILE *) 0) | |
111 | 1757 fatal_error (input_location, "fopen %s: %m", c_file); |
0 | 1758 |
1759 write_c_file (outf, c_file); | |
1760 | |
1761 if (fclose (outf)) | |
111 | 1762 fatal_error (input_location, "fclose %s: %m", c_file); |
0 | 1763 |
1764 /* Tell the linker that we have initializer and finalizer functions. */ | |
1765 #ifdef LD_INIT_SWITCH | |
1766 #ifdef COLLECT_EXPORT_LIST | |
1767 *ld2++ = concat (LD_INIT_SWITCH, ":", initname, ":", fininame, NULL); | |
1768 #else | |
1769 *ld2++ = LD_INIT_SWITCH; | |
1770 *ld2++ = initname; | |
1771 *ld2++ = LD_FINI_SWITCH; | |
1772 *ld2++ = fininame; | |
1773 #endif | |
1774 #endif | |
1775 | |
1776 #ifdef COLLECT_EXPORT_LIST | |
1777 if (shared_obj) | |
1778 { | |
1779 /* If we did not add export flag to link arguments before, add it to | |
1780 second link phase now. No new exports should have been added. */ | |
1781 if (! exports.first) | |
1782 *ld2++ = concat ("-bE:", export_file, NULL); | |
1783 | |
111 | 1784 #ifdef TARGET_AIX_VERSION |
1785 add_to_list (&exports, aix_shared_initname); | |
1786 add_to_list (&exports, aix_shared_fininame); | |
1787 #endif | |
1788 | |
0 | 1789 #ifndef LD_INIT_SWITCH |
1790 add_to_list (&exports, initname); | |
1791 add_to_list (&exports, fininame); | |
1792 add_to_list (&exports, "_GLOBAL__DI"); | |
1793 add_to_list (&exports, "_GLOBAL__DD"); | |
1794 #endif | |
1795 exportf = fopen (export_file, "w"); | |
1796 if (exportf == (FILE *) 0) | |
111 | 1797 fatal_error (input_location, "fopen %s: %m", export_file); |
0 | 1798 write_aix_file (exportf, exports.first); |
1799 if (fclose (exportf)) | |
111 | 1800 fatal_error (input_location, "fclose %s: %m", export_file); |
0 | 1801 } |
1802 #endif | |
1803 | |
1804 /* End of arguments to second link phase. */ | |
1805 *ld2 = (char*) 0; | |
1806 | |
1807 if (debug) | |
1808 { | |
1809 fprintf (stderr, "\n========== output_file = %s, c_file = %s\n", | |
1810 output_file, c_file); | |
1811 write_c_file (stderr, "stderr"); | |
1812 fprintf (stderr, "========== end of c_file\n\n"); | |
1813 #ifdef COLLECT_EXPORT_LIST | |
1814 fprintf (stderr, "\n========== export_file = %s\n", export_file); | |
1815 write_aix_file (stderr, exports.first); | |
1816 fprintf (stderr, "========== end of export_file\n\n"); | |
1817 #endif | |
1818 } | |
1819 | |
1820 /* Assemble the constructor and destructor tables. | |
1821 Link the tables in with the rest of the program. */ | |
1822 | |
111 | 1823 fork_execute ("gcc", c_argv, at_file_supplied); |
0 | 1824 #ifdef COLLECT_EXPORT_LIST |
1825 /* On AIX we must call tlink because of possible templates resolution. */ | |
1826 do_tlink (ld2_argv, object_lst); | |
55
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1827 |
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1828 if (lto_mode) |
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|
1829 maybe_run_lto_and_relink (ld2_argv, object_lst, object, false); |
0 | 1830 #else |
1831 /* Otherwise, simply call ld because tlink is already done. */ | |
55
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1832 if (lto_mode) |
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|
1833 maybe_run_lto_and_relink (ld2_argv, object_lst, object, true); |
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|
1834 else |
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1835 { |
111 | 1836 fork_execute ("ld", ld2_argv, HAVE_GNU_LD && at_file_supplied); |
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|
1837 post_ld_pass (false); |
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1838 } |
0 | 1839 |
1840 /* Let scan_prog_file do any final mods (OSF/rose needs this for | |
1841 constructors/destructors in shared libraries. */ | |
55
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|
1842 scan_prog_file (output_file, PASS_SECOND, SCAN_ALL); |
0 | 1843 #endif |
1844 | |
1845 maybe_unlink (c_file); | |
1846 maybe_unlink (o_file); | |
1847 | |
1848 #ifdef COLLECT_EXPORT_LIST | |
1849 maybe_unlink (export_file); | |
1850 #endif | |
1851 | |
1852 return 0; | |
1853 } | |
1854 | |
1855 | |
111 | 1856 /* Unlink FILE unless we are debugging or this is the output_file |
1857 and we may not unlink it. */ | |
1858 | |
1859 void | |
0 | 1860 maybe_unlink (const char *file) |
1861 { | |
111 | 1862 if (debug) |
1863 { | |
1864 notice ("[Leaving %s]\n", file); | |
1865 return; | |
1866 } | |
1867 | |
1868 if (file == output_file && !may_unlink_output_file) | |
1869 return; | |
1870 | |
1871 unlink_if_ordinary (file); | |
0 | 1872 } |
1873 | |
55
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1874 /* Call maybe_unlink on the NULL-terminated list, FILE_LIST. */ |
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1875 |
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1876 static void |
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1877 maybe_unlink_list (char **file_list) |
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1878 { |
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1879 char **tmp = file_list; |
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1880 |
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1881 while (*tmp) |
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1882 maybe_unlink (*(tmp++)); |
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1883 } |
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1884 |
0 | 1885 |
1886 static long sequence_number = 0; | |
1887 | |
1888 /* Add a name to a linked list. */ | |
1889 | |
1890 static void | |
1891 add_to_list (struct head *head_ptr, const char *name) | |
1892 { | |
1893 struct id *newid | |
1894 = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1); | |
1895 struct id *p; | |
1896 strcpy (newid->name, name); | |
1897 | |
1898 if (head_ptr->first) | |
1899 head_ptr->last->next = newid; | |
1900 else | |
1901 head_ptr->first = newid; | |
1902 | |
1903 /* Check for duplicate symbols. */ | |
1904 for (p = head_ptr->first; | |
1905 strcmp (name, p->name) != 0; | |
1906 p = p->next) | |
1907 ; | |
1908 if (p != newid) | |
1909 { | |
1910 head_ptr->last->next = 0; | |
1911 free (newid); | |
1912 return; | |
1913 } | |
1914 | |
1915 newid->sequence = ++sequence_number; | |
1916 head_ptr->last = newid; | |
1917 head_ptr->number++; | |
1918 } | |
1919 | |
1920 /* Grab the init priority number from an init function name that | |
1921 looks like "_GLOBAL_.I.12345.foo". */ | |
1922 | |
1923 static int | |
1924 extract_init_priority (const char *name) | |
1925 { | |
1926 int pos = 0, pri; | |
1927 | |
111 | 1928 #ifdef TARGET_AIX_VERSION |
1929 /* Run dependent module initializers before any constructors in this | |
1930 module. */ | |
1931 switch (is_ctor_dtor (name)) | |
1932 { | |
1933 case SYM_AIXI: | |
1934 case SYM_AIXD: | |
1935 return INT_MIN; | |
1936 default: | |
1937 break; | |
1938 } | |
1939 #endif | |
1940 | |
0 | 1941 while (name[pos] == '_') |
1942 ++pos; | |
1943 pos += 10; /* strlen ("GLOBAL__X_") */ | |
1944 | |
1945 /* Extract init_p number from ctor/dtor name. */ | |
1946 pri = atoi (name + pos); | |
1947 return pri ? pri : DEFAULT_INIT_PRIORITY; | |
1948 } | |
1949 | |
1950 /* Insertion sort the ids from ctor/dtor list HEAD_PTR in descending order. | |
1951 ctors will be run from right to left, dtors from left to right. */ | |
1952 | |
1953 static void | |
1954 sort_ids (struct head *head_ptr) | |
1955 { | |
1956 /* id holds the current element to insert. id_next holds the next | |
1957 element to insert. id_ptr iterates through the already sorted elements | |
1958 looking for the place to insert id. */ | |
1959 struct id *id, *id_next, **id_ptr; | |
1960 | |
1961 id = head_ptr->first; | |
1962 | |
1963 /* We don't have any sorted elements yet. */ | |
1964 head_ptr->first = NULL; | |
1965 | |
1966 for (; id; id = id_next) | |
1967 { | |
1968 id_next = id->next; | |
1969 id->sequence = extract_init_priority (id->name); | |
1970 | |
1971 for (id_ptr = &(head_ptr->first); ; id_ptr = &((*id_ptr)->next)) | |
1972 if (*id_ptr == NULL | |
1973 /* If the sequence numbers are the same, we put the id from the | |
1974 file later on the command line later in the list. */ | |
1975 || id->sequence > (*id_ptr)->sequence | |
1976 /* Hack: do lexical compare, too. | |
1977 || (id->sequence == (*id_ptr)->sequence | |
1978 && strcmp (id->name, (*id_ptr)->name) > 0) */ | |
1979 ) | |
1980 { | |
1981 id->next = *id_ptr; | |
1982 *id_ptr = id; | |
1983 break; | |
1984 } | |
1985 } | |
1986 | |
1987 /* Now set the sequence numbers properly so write_c_file works. */ | |
1988 for (id = head_ptr->first; id; id = id->next) | |
1989 id->sequence = ++sequence_number; | |
1990 } | |
1991 | |
1992 /* Write: `prefix', the names on list LIST, `suffix'. */ | |
1993 | |
1994 static void | |
1995 write_list (FILE *stream, const char *prefix, struct id *list) | |
1996 { | |
1997 while (list) | |
1998 { | |
1999 fprintf (stream, "%sx%d,\n", prefix, list->sequence); | |
2000 list = list->next; | |
2001 } | |
2002 } | |
2003 | |
2004 #ifdef COLLECT_EXPORT_LIST | |
2005 /* This function is really used only on AIX, but may be useful. */ | |
2006 static int | |
2007 is_in_list (const char *prefix, struct id *list) | |
2008 { | |
2009 while (list) | |
2010 { | |
2011 if (!strcmp (prefix, list->name)) return 1; | |
2012 list = list->next; | |
2013 } | |
2014 return 0; | |
2015 } | |
2016 #endif /* COLLECT_EXPORT_LIST */ | |
2017 | |
2018 /* Added for debugging purpose. */ | |
2019 #ifdef COLLECT_EXPORT_LIST | |
2020 static void | |
2021 dump_list (FILE *stream, const char *prefix, struct id *list) | |
2022 { | |
2023 while (list) | |
2024 { | |
2025 fprintf (stream, "%s%s,\n", prefix, list->name); | |
2026 list = list->next; | |
2027 } | |
2028 } | |
2029 #endif | |
2030 | |
2031 #if 0 | |
2032 static void | |
2033 dump_prefix_list (FILE *stream, const char *prefix, struct prefix_list *list) | |
2034 { | |
2035 while (list) | |
2036 { | |
2037 fprintf (stream, "%s%s,\n", prefix, list->prefix); | |
2038 list = list->next; | |
2039 } | |
2040 } | |
2041 #endif | |
2042 | |
2043 static void | |
2044 write_list_with_asm (FILE *stream, const char *prefix, struct id *list) | |
2045 { | |
2046 while (list) | |
2047 { | |
2048 fprintf (stream, "%sx%d __asm__ (\"%s\");\n", | |
2049 prefix, list->sequence, list->name); | |
2050 list = list->next; | |
2051 } | |
2052 } | |
2053 | |
2054 /* Write out the constructor and destructor tables statically (for a shared | |
2055 object), along with the functions to execute them. */ | |
2056 | |
2057 static void | |
2058 write_c_file_stat (FILE *stream, const char *name ATTRIBUTE_UNUSED) | |
2059 { | |
2060 const char *p, *q; | |
2061 char *prefix, *r; | |
2062 int frames = (frame_tables.number > 0); | |
2063 | |
2064 /* Figure out name of output_file, stripping off .so version. */ | |
111 | 2065 q = p = lbasename (output_file); |
2066 | |
0 | 2067 while (q) |
2068 { | |
2069 q = strchr (q,'.'); | |
2070 if (q == 0) | |
2071 { | |
2072 q = p + strlen (p); | |
2073 break; | |
2074 } | |
2075 else | |
2076 { | |
111 | 2077 if (filename_ncmp (q, SHLIB_SUFFIX, strlen (SHLIB_SUFFIX)) == 0) |
0 | 2078 { |
2079 q += strlen (SHLIB_SUFFIX); | |
2080 break; | |
2081 } | |
2082 else | |
2083 q++; | |
2084 } | |
2085 } | |
2086 /* q points to null at end of the string (or . of the .so version) */ | |
2087 prefix = XNEWVEC (char, q - p + 1); | |
2088 strncpy (prefix, p, q - p); | |
2089 prefix[q - p] = 0; | |
2090 for (r = prefix; *r; r++) | |
2091 if (!ISALNUM ((unsigned char)*r)) | |
2092 *r = '_'; | |
2093 if (debug) | |
2094 notice ("\nwrite_c_file - output name is %s, prefix is %s\n", | |
2095 output_file, prefix); | |
2096 | |
2097 initname = concat ("_GLOBAL__FI_", prefix, NULL); | |
2098 fininame = concat ("_GLOBAL__FD_", prefix, NULL); | |
111 | 2099 #ifdef TARGET_AIX_VERSION |
2100 aix_shared_initname = concat ("_GLOBAL__AIXI_", prefix, NULL); | |
2101 aix_shared_fininame = concat ("_GLOBAL__AIXD_", prefix, NULL); | |
2102 #endif | |
0 | 2103 |
2104 free (prefix); | |
2105 | |
2106 /* Write the tables as C code. */ | |
2107 | |
111 | 2108 /* This count variable is used to prevent multiple calls to the |
2109 constructors/destructors. | |
2110 This guard against multiple calls is important on AIX as the initfini | |
2111 functions are deliberately invoked multiple times as part of the | |
2112 mechanisms GCC uses to order constructors across different dependent | |
2113 shared libraries (see config/rs6000/aix.h). | |
2114 */ | |
0 | 2115 fprintf (stream, "static int count;\n"); |
2116 fprintf (stream, "typedef void entry_pt();\n"); | |
2117 write_list_with_asm (stream, "extern entry_pt ", constructors.first); | |
2118 | |
2119 if (frames) | |
2120 { | |
2121 write_list_with_asm (stream, "extern void *", frame_tables.first); | |
2122 | |
2123 fprintf (stream, "\tstatic void *frame_table[] = {\n"); | |
2124 write_list (stream, "\t\t&", frame_tables.first); | |
2125 fprintf (stream, "\t0\n};\n"); | |
2126 | |
2127 /* This must match what's in frame.h. */ | |
2128 fprintf (stream, "struct object {\n"); | |
2129 fprintf (stream, " void *pc_begin;\n"); | |
2130 fprintf (stream, " void *pc_end;\n"); | |
2131 fprintf (stream, " void *fde_begin;\n"); | |
2132 fprintf (stream, " void *fde_array;\n"); | |
2133 fprintf (stream, " __SIZE_TYPE__ count;\n"); | |
2134 fprintf (stream, " struct object *next;\n"); | |
2135 fprintf (stream, "};\n"); | |
2136 | |
111 | 2137 fprintf (stream, "extern void __register_frame_info_table_bases (void *, struct object *, void *tbase, void *dbase);\n"); |
0 | 2138 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n"); |
2139 fprintf (stream, "extern void *__deregister_frame_info (void *);\n"); | |
111 | 2140 #ifdef TARGET_AIX_VERSION |
2141 fprintf (stream, "extern void *__gcc_unwind_dbase;\n"); | |
2142 #endif | |
0 | 2143 |
2144 fprintf (stream, "static void reg_frame () {\n"); | |
2145 fprintf (stream, "\tstatic struct object ob;\n"); | |
111 | 2146 #ifdef TARGET_AIX_VERSION |
2147 /* Use __gcc_unwind_dbase as the base address for data on AIX. | |
2148 This might not be the start of the segment, signed offsets assumed. | |
2149 */ | |
2150 fprintf (stream, "\t__register_frame_info_table_bases (frame_table, &ob, (void *)0, &__gcc_unwind_dbase);\n"); | |
2151 #else | |
0 | 2152 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n"); |
111 | 2153 #endif |
0 | 2154 fprintf (stream, "\t}\n"); |
2155 | |
2156 fprintf (stream, "static void dereg_frame () {\n"); | |
2157 fprintf (stream, "\t__deregister_frame_info (frame_table);\n"); | |
2158 fprintf (stream, "\t}\n"); | |
2159 } | |
2160 | |
2161 fprintf (stream, "void %s() {\n", initname); | |
2162 if (constructors.number > 0 || frames) | |
2163 { | |
2164 fprintf (stream, "\tstatic entry_pt *ctors[] = {\n"); | |
2165 write_list (stream, "\t\t", constructors.first); | |
2166 if (frames) | |
2167 fprintf (stream, "\treg_frame,\n"); | |
2168 fprintf (stream, "\t};\n"); | |
2169 fprintf (stream, "\tentry_pt **p;\n"); | |
2170 fprintf (stream, "\tif (count++ != 0) return;\n"); | |
2171 fprintf (stream, "\tp = ctors + %d;\n", constructors.number + frames); | |
2172 fprintf (stream, "\twhile (p > ctors) (*--p)();\n"); | |
2173 } | |
2174 else | |
2175 fprintf (stream, "\t++count;\n"); | |
2176 fprintf (stream, "}\n"); | |
2177 write_list_with_asm (stream, "extern entry_pt ", destructors.first); | |
2178 fprintf (stream, "void %s() {\n", fininame); | |
2179 if (destructors.number > 0 || frames) | |
2180 { | |
2181 fprintf (stream, "\tstatic entry_pt *dtors[] = {\n"); | |
2182 write_list (stream, "\t\t", destructors.first); | |
2183 if (frames) | |
2184 fprintf (stream, "\tdereg_frame,\n"); | |
2185 fprintf (stream, "\t};\n"); | |
2186 fprintf (stream, "\tentry_pt **p;\n"); | |
2187 fprintf (stream, "\tif (--count != 0) return;\n"); | |
2188 fprintf (stream, "\tp = dtors;\n"); | |
2189 fprintf (stream, "\twhile (p < dtors + %d) (*p++)();\n", | |
2190 destructors.number + frames); | |
2191 } | |
2192 fprintf (stream, "}\n"); | |
2193 | |
2194 if (shared_obj) | |
2195 { | |
111 | 2196 COLLECT_SHARED_INIT_FUNC (stream, initname); |
2197 COLLECT_SHARED_FINI_FUNC (stream, fininame); | |
0 | 2198 } |
2199 } | |
2200 | |
2201 /* Write the constructor/destructor tables. */ | |
2202 | |
2203 #ifndef LD_INIT_SWITCH | |
2204 static void | |
2205 write_c_file_glob (FILE *stream, const char *name ATTRIBUTE_UNUSED) | |
2206 { | |
2207 /* Write the tables as C code. */ | |
2208 | |
2209 int frames = (frame_tables.number > 0); | |
2210 | |
2211 fprintf (stream, "typedef void entry_pt();\n\n"); | |
2212 | |
2213 write_list_with_asm (stream, "extern entry_pt ", constructors.first); | |
2214 | |
2215 if (frames) | |
2216 { | |
2217 write_list_with_asm (stream, "extern void *", frame_tables.first); | |
2218 | |
2219 fprintf (stream, "\tstatic void *frame_table[] = {\n"); | |
2220 write_list (stream, "\t\t&", frame_tables.first); | |
2221 fprintf (stream, "\t0\n};\n"); | |
2222 | |
2223 /* This must match what's in frame.h. */ | |
2224 fprintf (stream, "struct object {\n"); | |
2225 fprintf (stream, " void *pc_begin;\n"); | |
2226 fprintf (stream, " void *pc_end;\n"); | |
2227 fprintf (stream, " void *fde_begin;\n"); | |
2228 fprintf (stream, " void *fde_array;\n"); | |
2229 fprintf (stream, " __SIZE_TYPE__ count;\n"); | |
2230 fprintf (stream, " struct object *next;\n"); | |
2231 fprintf (stream, "};\n"); | |
2232 | |
2233 fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n"); | |
2234 fprintf (stream, "extern void *__deregister_frame_info (void *);\n"); | |
2235 | |
2236 fprintf (stream, "static void reg_frame () {\n"); | |
2237 fprintf (stream, "\tstatic struct object ob;\n"); | |
2238 fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n"); | |
2239 fprintf (stream, "\t}\n"); | |
2240 | |
2241 fprintf (stream, "static void dereg_frame () {\n"); | |
2242 fprintf (stream, "\t__deregister_frame_info (frame_table);\n"); | |
2243 fprintf (stream, "\t}\n"); | |
2244 } | |
2245 | |
2246 fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n"); | |
2247 fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number + frames); | |
2248 write_list (stream, "\t", constructors.first); | |
2249 if (frames) | |
2250 fprintf (stream, "\treg_frame,\n"); | |
2251 fprintf (stream, "\t0\n};\n\n"); | |
2252 | |
2253 write_list_with_asm (stream, "extern entry_pt ", destructors.first); | |
2254 | |
2255 fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n"); | |
2256 fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number + frames); | |
2257 write_list (stream, "\t", destructors.first); | |
2258 if (frames) | |
2259 fprintf (stream, "\tdereg_frame,\n"); | |
2260 fprintf (stream, "\t0\n};\n\n"); | |
2261 | |
2262 fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN); | |
2263 fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN); | |
2264 } | |
2265 #endif /* ! LD_INIT_SWITCH */ | |
2266 | |
2267 static void | |
2268 write_c_file (FILE *stream, const char *name) | |
2269 { | |
2270 #ifndef LD_INIT_SWITCH | |
2271 if (! shared_obj) | |
2272 write_c_file_glob (stream, name); | |
2273 else | |
2274 #endif | |
2275 write_c_file_stat (stream, name); | |
2276 } | |
2277 | |
2278 #ifdef COLLECT_EXPORT_LIST | |
2279 static void | |
2280 write_aix_file (FILE *stream, struct id *list) | |
2281 { | |
2282 for (; list; list = list->next) | |
2283 { | |
2284 fputs (list->name, stream); | |
2285 putc ('\n', stream); | |
2286 } | |
2287 } | |
2288 #endif | |
2289 | |
2290 #ifdef OBJECT_FORMAT_NONE | |
2291 | |
63
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2292 /* Check to make sure the file is an LTO object file. */ |
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2293 |
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2294 static bool |
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2295 maybe_lto_object_file (const char *prog_name) |
55
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2296 { |
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2297 FILE *f; |
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2298 unsigned char buf[4]; |
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2299 int i; |
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2300 |
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2301 static unsigned char elfmagic[4] = { 0x7f, 'E', 'L', 'F' }; |
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2302 static unsigned char coffmagic[2] = { 0x4c, 0x01 }; |
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2303 static unsigned char coffmagic_x64[2] = { 0x64, 0x86 }; |
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2304 static unsigned char machomagic[4][4] = { |
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2305 { 0xcf, 0xfa, 0xed, 0xfe }, |
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2306 { 0xce, 0xfa, 0xed, 0xfe }, |
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2307 { 0xfe, 0xed, 0xfa, 0xcf }, |
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parents:
55
diff
changeset
|
2308 { 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
|
2309 }; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2310 |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2311 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
|
2312 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
|
2313 return false; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2314 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
|
2315 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
|
2316 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
|
2317 |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2318 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
|
2319 || 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
|
2320 || 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
|
2321 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
|
2322 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
|
2323 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
|
2324 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
|
2325 |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2326 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
|
2327 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2328 |
0 | 2329 /* 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
|
2330 the symbols g++ uses for static constructors and destructors. */ |
0 | 2331 |
2332 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
|
2333 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
|
2334 scanfilter filter) |
0 | 2335 { |
2336 void (*int_handler) (int); | |
2337 #ifdef SIGQUIT | |
2338 void (*quit_handler) (int); | |
2339 #endif | |
2340 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
|
2341 const char **nm_argv = CONST_CAST2 (const char **, char**, real_nm_argv); |
0 | 2342 int argc = 0; |
2343 struct pex_obj *pex; | |
2344 const char *errmsg; | |
2345 int err; | |
2346 char *p, buf[1024]; | |
2347 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
|
2348 int found_lto = 0; |
0 | 2349 |
2350 if (which_pass == PASS_SECOND) | |
2351 return; | |
2352 | |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2353 /* 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
|
2354 us from accepting an archive containing LTO objects, which |
111 | 2355 gcc cannot 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
|
2356 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
|
2357 return; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2358 |
0 | 2359 /* If we do not have an `nm', complain. */ |
2360 if (nm_file_name == 0) | |
111 | 2361 fatal_error (input_location, "cannot find 'nm'"); |
0 | 2362 |
2363 nm_argv[argc++] = nm_file_name; | |
2364 if (NM_FLAGS[0] != '\0') | |
2365 nm_argv[argc++] = NM_FLAGS; | |
2366 | |
2367 nm_argv[argc++] = prog_name; | |
2368 nm_argv[argc++] = (char *) 0; | |
2369 | |
2370 /* Trace if needed. */ | |
111 | 2371 if (verbose) |
0 | 2372 { |
2373 const char **p_argv; | |
2374 const char *str; | |
2375 | |
2376 for (p_argv = &nm_argv[0]; (str = *p_argv) != (char *) 0; p_argv++) | |
2377 fprintf (stderr, " %s", str); | |
2378 | |
2379 fprintf (stderr, "\n"); | |
2380 } | |
2381 | |
2382 fflush (stdout); | |
2383 fflush (stderr); | |
2384 | |
2385 pex = pex_init (PEX_USE_PIPES, "collect2", NULL); | |
2386 if (pex == NULL) | |
111 | 2387 fatal_error (input_location, "pex_init failed: %m"); |
0 | 2388 |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2389 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
|
2390 &err); |
0 | 2391 if (errmsg != NULL) |
2392 { | |
2393 if (err != 0) | |
2394 { | |
2395 errno = err; | |
111 | 2396 fatal_error (input_location, "%s: %m", _(errmsg)); |
0 | 2397 } |
2398 else | |
111 | 2399 fatal_error (input_location, errmsg); |
0 | 2400 } |
2401 | |
2402 int_handler = (void (*) (int)) signal (SIGINT, SIG_IGN); | |
2403 #ifdef SIGQUIT | |
2404 quit_handler = (void (*) (int)) signal (SIGQUIT, SIG_IGN); | |
2405 #endif | |
2406 | |
2407 inf = pex_read_output (pex, 0); | |
2408 if (inf == NULL) | |
111 | 2409 fatal_error (input_location, "can't open nm output: %m"); |
0 | 2410 |
2411 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
|
2412 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2413 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
|
2414 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
|
2415 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2416 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
|
2417 } |
0 | 2418 |
2419 /* Read each line of nm output. */ | |
2420 while (fgets (buf, sizeof buf, inf) != (char *) 0) | |
2421 { | |
2422 int ch, ch2; | |
2423 char *name, *end; | |
2424 | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2425 if (debug) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2426 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
|
2427 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2428 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
|
2429 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2430 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
|
2431 continue; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2432 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2433 /* 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
|
2434 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
|
2435 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
|
2436 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
|
2437 && (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
|
2438 && 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
|
2439 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2440 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
|
2441 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2442 /* 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
|
2443 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
|
2444 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
|
2445 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2446 break; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2447 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2448 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2449 continue; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2450 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2451 |
0 | 2452 /* 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
|
2453 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
|
2454 not supposed to even consider. */ |
0 | 2455 |
2456 for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++) | |
2457 if (ch == ' ' && p[1] == 'U' && p[2] == ' ') | |
2458 break; | |
2459 | |
2460 if (ch != '_') | |
2461 continue; | |
2462 | |
2463 name = p; | |
2464 /* Find the end of the symbol name. | |
2465 Do not include `|', because Encore nm can tack that on the end. */ | |
2466 for (end = p; (ch2 = *end) != '\0' && !ISSPACE (ch2) && ch2 != '|'; | |
2467 end++) | |
2468 continue; | |
2469 | |
2470 | |
2471 *end = '\0'; | |
111 | 2472 |
0 | 2473 switch (is_ctor_dtor (name)) |
2474 { | |
2475 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
|
2476 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
|
2477 break; |
0 | 2478 if (which_pass != PASS_LIB) |
2479 add_to_list (&constructors, name); | |
2480 break; | |
2481 | |
2482 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
|
2483 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
|
2484 break; |
0 | 2485 if (which_pass != PASS_LIB) |
2486 add_to_list (&destructors, name); | |
2487 break; | |
2488 | |
2489 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
|
2490 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
|
2491 break; |
0 | 2492 if (which_pass != PASS_LIB) |
111 | 2493 fatal_error (input_location, "init function found in object %s", |
2494 prog_name); | |
0 | 2495 #ifndef LD_INIT_SWITCH |
2496 add_to_list (&constructors, name); | |
2497 #endif | |
2498 break; | |
2499 | |
2500 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
|
2501 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
|
2502 break; |
0 | 2503 if (which_pass != PASS_LIB) |
111 | 2504 fatal_error (input_location, "fini function found in object %s", |
2505 prog_name); | |
0 | 2506 #ifndef LD_FINI_SWITCH |
2507 add_to_list (&destructors, name); | |
2508 #endif | |
2509 break; | |
2510 | |
2511 case SYM_DWEH: | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2512 if (! (filter & SCAN_DWEH)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2513 break; |
0 | 2514 if (which_pass != PASS_LIB) |
2515 add_to_list (&frame_tables, name); | |
2516 break; | |
2517 | |
2518 default: /* not a constructor or destructor */ | |
2519 continue; | |
2520 } | |
2521 } | |
2522 | |
2523 if (debug) | |
2524 fprintf (stderr, "\n"); | |
2525 | |
2526 do_wait (nm_file_name, pex); | |
2527 | |
2528 signal (SIGINT, int_handler); | |
2529 #ifdef SIGQUIT | |
2530 signal (SIGQUIT, quit_handler); | |
2531 #endif | |
2532 } | |
2533 | |
2534 #ifdef LDD_SUFFIX | |
2535 | |
2536 /* Use the List Dynamic Dependencies program to find shared libraries that | |
2537 the output file depends upon and their initialization/finalization | |
2538 routines, if any. */ | |
2539 | |
2540 static void | |
2541 scan_libraries (const char *prog_name) | |
2542 { | |
2543 static struct head libraries; /* list of shared libraries found */ | |
2544 struct id *list; | |
2545 void (*int_handler) (int); | |
2546 #ifdef SIGQUIT | |
2547 void (*quit_handler) (int); | |
2548 #endif | |
2549 char *real_ldd_argv[4]; | |
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2550 const char **ldd_argv = CONST_CAST2 (const char **, char **, real_ldd_argv); |
0 | 2551 int argc = 0; |
2552 struct pex_obj *pex; | |
2553 const char *errmsg; | |
2554 int err; | |
2555 char buf[1024]; | |
2556 FILE *inf; | |
2557 | |
2558 /* If we do not have an `ldd', complain. */ | |
2559 if (ldd_file_name == 0) | |
2560 { | |
2561 error ("cannot find 'ldd'"); | |
2562 return; | |
2563 } | |
2564 | |
2565 ldd_argv[argc++] = ldd_file_name; | |
2566 ldd_argv[argc++] = prog_name; | |
2567 ldd_argv[argc++] = (char *) 0; | |
2568 | |
2569 /* Trace if needed. */ | |
111 | 2570 if (verbose) |
0 | 2571 { |
2572 const char **p_argv; | |
2573 const char *str; | |
2574 | |
2575 for (p_argv = &ldd_argv[0]; (str = *p_argv) != (char *) 0; p_argv++) | |
2576 fprintf (stderr, " %s", str); | |
2577 | |
2578 fprintf (stderr, "\n"); | |
2579 } | |
2580 | |
2581 fflush (stdout); | |
2582 fflush (stderr); | |
2583 | |
2584 pex = pex_init (PEX_USE_PIPES, "collect2", NULL); | |
2585 if (pex == NULL) | |
111 | 2586 fatal_error (input_location, "pex_init failed: %m"); |
0 | 2587 |
2588 errmsg = pex_run (pex, 0, ldd_file_name, real_ldd_argv, NULL, NULL, &err); | |
2589 if (errmsg != NULL) | |
2590 { | |
2591 if (err != 0) | |
2592 { | |
2593 errno = err; | |
111 | 2594 fatal_error (input_location, "%s: %m", _(errmsg)); |
0 | 2595 } |
2596 else | |
111 | 2597 fatal_error (input_location, errmsg); |
0 | 2598 } |
2599 | |
2600 int_handler = (void (*) (int)) signal (SIGINT, SIG_IGN); | |
2601 #ifdef SIGQUIT | |
2602 quit_handler = (void (*) (int)) signal (SIGQUIT, SIG_IGN); | |
2603 #endif | |
2604 | |
2605 inf = pex_read_output (pex, 0); | |
2606 if (inf == NULL) | |
111 | 2607 fatal_error (input_location, "can't open ldd output: %m"); |
0 | 2608 |
2609 if (debug) | |
2610 notice ("\nldd output with constructors/destructors.\n"); | |
2611 | |
2612 /* Read each line of ldd output. */ | |
2613 while (fgets (buf, sizeof buf, inf) != (char *) 0) | |
2614 { | |
2615 int ch2; | |
2616 char *name, *end, *p = buf; | |
2617 | |
2618 /* Extract names of libraries and add to list. */ | |
2619 PARSE_LDD_OUTPUT (p); | |
2620 if (p == 0) | |
2621 continue; | |
2622 | |
2623 name = p; | |
2624 if (strncmp (name, "not found", sizeof ("not found") - 1) == 0) | |
111 | 2625 fatal_error (input_location, "dynamic dependency %s not found", buf); |
0 | 2626 |
2627 /* Find the end of the symbol name. */ | |
2628 for (end = p; | |
2629 (ch2 = *end) != '\0' && ch2 != '\n' && !ISSPACE (ch2) && ch2 != '|'; | |
2630 end++) | |
2631 continue; | |
2632 *end = '\0'; | |
2633 | |
2634 if (access (name, R_OK) == 0) | |
2635 add_to_list (&libraries, name); | |
2636 else | |
111 | 2637 fatal_error (input_location, "unable to open dynamic dependency '%s'", |
2638 buf); | |
0 | 2639 |
2640 if (debug) | |
2641 fprintf (stderr, "\t%s\n", buf); | |
2642 } | |
2643 if (debug) | |
2644 fprintf (stderr, "\n"); | |
2645 | |
2646 do_wait (ldd_file_name, pex); | |
2647 | |
2648 signal (SIGINT, int_handler); | |
2649 #ifdef SIGQUIT | |
2650 signal (SIGQUIT, quit_handler); | |
2651 #endif | |
2652 | |
2653 /* Now iterate through the library list adding their symbols to | |
2654 the list. */ | |
2655 for (list = libraries.first; list; list = list->next) | |
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2656 scan_prog_file (list->name, PASS_LIB, SCAN_ALL); |
0 | 2657 } |
2658 | |
2659 #endif /* LDD_SUFFIX */ | |
2660 | |
2661 #endif /* OBJECT_FORMAT_NONE */ | |
2662 | |
2663 | |
2664 /* | |
2665 * COFF specific stuff. | |
2666 */ | |
2667 | |
2668 #ifdef OBJECT_FORMAT_COFF | |
2669 | |
111 | 2670 # define GCC_SYMBOLS(X) (HEADER (ldptr).f_nsyms) |
0 | 2671 # define GCC_SYMENT SYMENT |
2672 # if defined (C_WEAKEXT) | |
2673 # define GCC_OK_SYMBOL(X) \ | |
2674 (((X).n_sclass == C_EXT || (X).n_sclass == C_WEAKEXT) && \ | |
2675 ((X).n_scnum > N_UNDEF) && \ | |
2676 (aix64_flag \ | |
2677 || (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) \ | |
2678 || ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT)))) | |
2679 # define GCC_UNDEF_SYMBOL(X) \ | |
2680 (((X).n_sclass == C_EXT || (X).n_sclass == C_WEAKEXT) && \ | |
2681 ((X).n_scnum == N_UNDEF)) | |
2682 # else | |
2683 # define GCC_OK_SYMBOL(X) \ | |
2684 (((X).n_sclass == C_EXT) && \ | |
2685 ((X).n_scnum > N_UNDEF) && \ | |
2686 (aix64_flag \ | |
2687 || (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) \ | |
2688 || ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT)))) | |
2689 # define GCC_UNDEF_SYMBOL(X) \ | |
2690 (((X).n_sclass == C_EXT) && ((X).n_scnum == N_UNDEF)) | |
2691 # endif | |
2692 # define GCC_SYMINC(X) ((X).n_numaux+1) | |
2693 # define GCC_SYMZERO(X) 0 | |
2694 | |
2695 /* 0757 = U803XTOCMAGIC (AIX 4.3) and 0767 = U64_TOCMAGIC (AIX V5) */ | |
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2696 #if TARGET_AIX_VERSION >= 51 |
0 | 2697 # define GCC_CHECK_HDR(X) \ |
111 | 2698 (((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \ |
2699 || (HEADER (X).f_magic == 0767 && aix64_flag)) \ | |
2700 && !(HEADER (X).f_flags & F_LOADONLY)) | |
0 | 2701 #else |
2702 # define GCC_CHECK_HDR(X) \ | |
111 | 2703 (((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \ |
2704 || (HEADER (X).f_magic == 0757 && aix64_flag)) \ | |
2705 && !(HEADER (X).f_flags & F_LOADONLY)) | |
0 | 2706 #endif |
2707 | |
2708 #ifdef COLLECT_EXPORT_LIST | |
2709 /* Array of standard AIX libraries which should not | |
2710 be scanned for ctors/dtors. */ | |
2711 static const char *const aix_std_libs[] = { | |
2712 "/unix", | |
2713 "/lib/libc.a", | |
2714 "/lib/libm.a", | |
2715 "/lib/libc_r.a", | |
2716 "/lib/libm_r.a", | |
2717 "/usr/lib/libc.a", | |
2718 "/usr/lib/libm.a", | |
2719 "/usr/lib/libc_r.a", | |
2720 "/usr/lib/libm_r.a", | |
2721 "/usr/lib/threads/libc.a", | |
2722 "/usr/ccs/lib/libc.a", | |
2723 "/usr/ccs/lib/libm.a", | |
2724 "/usr/ccs/lib/libc_r.a", | |
2725 "/usr/ccs/lib/libm_r.a", | |
2726 NULL | |
2727 }; | |
2728 | |
2729 /* This function checks the filename and returns 1 | |
2730 if this name matches the location of a standard AIX library. */ | |
2731 static int ignore_library (const char *); | |
2732 static int | |
2733 ignore_library (const char *name) | |
2734 { | |
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2735 const char *const *p; |
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2736 size_t length; |
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2737 |
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2738 if (target_system_root[0] != '\0') |
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2739 { |
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2740 length = strlen (target_system_root); |
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2741 if (strncmp (name, target_system_root, length) != 0) |
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2742 return 0; |
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2743 name += length; |
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2744 } |
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2745 for (p = &aix_std_libs[0]; *p != NULL; ++p) |
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2746 if (strcmp (name, *p) == 0) |
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2747 return 1; |
0 | 2748 return 0; |
2749 } | |
2750 #endif /* COLLECT_EXPORT_LIST */ | |
2751 | |
2752 #if defined (HAVE_DECL_LDGETNAME) && !HAVE_DECL_LDGETNAME | |
2753 extern char *ldgetname (LDFILE *, GCC_SYMENT *); | |
2754 #endif | |
2755 | |
2756 /* COFF version to scan the name list of the loaded program for | |
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2757 the symbols g++ uses for static constructors and destructors. */ |
0 | 2758 |
2759 static void | |
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2760 scan_prog_file (const char *prog_name, scanpass which_pass, |
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2761 scanfilter filter) |
0 | 2762 { |
2763 LDFILE *ldptr = NULL; | |
2764 int sym_index, sym_count; | |
2765 int is_shared = 0; | |
131 | 2766 int found_lto = 0; |
2767 | |
2768 if (which_pass != PASS_FIRST && which_pass != PASS_OBJ | |
2769 && which_pass != PASS_LTOINFO) | |
0 | 2770 return; |
2771 | |
2772 #ifdef COLLECT_EXPORT_LIST | |
2773 /* We do not need scanning for some standard C libraries. */ | |
2774 if (which_pass == PASS_FIRST && ignore_library (prog_name)) | |
2775 return; | |
2776 | |
2777 /* On AIX we have a loop, because there is not much difference | |
2778 between an object and an archive. This trick allows us to | |
2779 eliminate scan_libraries() function. */ | |
2780 do | |
2781 { | |
131 | 2782 found_lto = 0; |
0 | 2783 #endif |
2784 /* Some platforms (e.g. OSF4) declare ldopen as taking a | |
2785 non-const char * filename parameter, even though it will not | |
2786 modify that string. So we must cast away const-ness here, | |
2787 using CONST_CAST to prevent complaints from -Wcast-qual. */ | |
2788 if ((ldptr = ldopen (CONST_CAST (char *, prog_name), ldptr)) != NULL) | |
2789 { | |
2790 if (! MY_ISCOFF (HEADER (ldptr).f_magic)) | |
111 | 2791 fatal_error (input_location, "%s: not a COFF file", prog_name); |
0 | 2792 |
2793 if (GCC_CHECK_HDR (ldptr)) | |
2794 { | |
2795 sym_count = GCC_SYMBOLS (ldptr); | |
2796 sym_index = GCC_SYMZERO (ldptr); | |
2797 | |
2798 #ifdef COLLECT_EXPORT_LIST | |
2799 /* Is current archive member a shared object? */ | |
2800 is_shared = HEADER (ldptr).f_flags & F_SHROBJ; | |
2801 #endif | |
2802 | |
2803 while (sym_index < sym_count) | |
2804 { | |
2805 GCC_SYMENT symbol; | |
2806 | |
2807 if (ldtbread (ldptr, sym_index, &symbol) <= 0) | |
2808 break; | |
2809 sym_index += GCC_SYMINC (symbol); | |
2810 | |
2811 if (GCC_OK_SYMBOL (symbol)) | |
2812 { | |
2813 char *name; | |
2814 | |
2815 if ((name = ldgetname (ldptr, &symbol)) == NULL) | |
2816 continue; /* Should never happen. */ | |
2817 | |
2818 #ifdef XCOFF_DEBUGGING_INFO | |
2819 /* All AIX function names have a duplicate entry | |
2820 beginning with a dot. */ | |
2821 if (*name == '.') | |
2822 ++name; | |
2823 #endif | |
2824 | |
131 | 2825 if (which_pass == PASS_LTOINFO) |
2826 { | |
2827 if (found_lto) | |
2828 continue; | |
2829 if (strncmp (name, "__gnu_lto_v1", 12) == 0) | |
2830 { | |
2831 add_lto_object (<o_objects, prog_name); | |
2832 found_lto = 1; | |
2833 break; | |
2834 } | |
2835 continue; | |
2836 } | |
2837 | |
0 | 2838 switch (is_ctor_dtor (name)) |
2839 { | |
111 | 2840 #if TARGET_AIX_VERSION |
2841 /* Add AIX shared library initalisers/finalisers | |
2842 to the constructors/destructors list of the | |
2843 current module. */ | |
2844 case SYM_AIXI: | |
2845 if (! (filter & SCAN_CTOR)) | |
2846 break; | |
131 | 2847 if (is_shared && !aixlazy_flag |
2848 #ifdef COLLECT_EXPORT_LIST | |
2849 && ! static_obj | |
2850 && ! is_in_list (prog_name, static_libs.first) | |
2851 #endif | |
2852 ) | |
111 | 2853 add_to_list (&constructors, name); |
2854 break; | |
2855 | |
2856 case SYM_AIXD: | |
2857 if (! (filter & SCAN_DTOR)) | |
2858 break; | |
2859 if (is_shared && !aixlazy_flag) | |
2860 add_to_list (&destructors, name); | |
2861 break; | |
2862 #endif | |
2863 | |
0 | 2864 case SYM_CTOR: |
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2865 if (! (filter & SCAN_CTOR)) |
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2866 break; |
0 | 2867 if (! is_shared) |
2868 add_to_list (&constructors, name); | |
2869 #if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH) | |
2870 if (which_pass == PASS_OBJ) | |
2871 add_to_list (&exports, name); | |
2872 #endif | |
2873 break; | |
2874 | |
2875 case SYM_DTOR: | |
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2876 if (! (filter & SCAN_DTOR)) |
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2877 break; |
0 | 2878 if (! is_shared) |
2879 add_to_list (&destructors, name); | |
2880 #if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH) | |
2881 if (which_pass == PASS_OBJ) | |
2882 add_to_list (&exports, name); | |
2883 #endif | |
2884 break; | |
2885 | |
2886 #ifdef COLLECT_EXPORT_LIST | |
2887 case SYM_INIT: | |
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2888 if (! (filter & SCAN_INIT)) |
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2889 break; |
0 | 2890 #ifndef LD_INIT_SWITCH |
2891 if (is_shared) | |
2892 add_to_list (&constructors, name); | |
2893 #endif | |
2894 break; | |
2895 | |
2896 case SYM_FINI: | |
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2897 if (! (filter & SCAN_FINI)) |
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2898 break; |
0 | 2899 #ifndef LD_INIT_SWITCH |
2900 if (is_shared) | |
2901 add_to_list (&destructors, name); | |
2902 #endif | |
2903 break; | |
2904 #endif | |
2905 | |
2906 case SYM_DWEH: | |
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2907 if (! (filter & SCAN_DWEH)) |
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2908 break; |
0 | 2909 if (! is_shared) |
2910 add_to_list (&frame_tables, name); | |
2911 #if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH) | |
2912 if (which_pass == PASS_OBJ) | |
2913 add_to_list (&exports, name); | |
2914 #endif | |
2915 break; | |
2916 | |
2917 default: /* not a constructor or destructor */ | |
2918 #ifdef COLLECT_EXPORT_LIST | |
2919 /* Explicitly export all global symbols when | |
2920 building a shared object on AIX, but do not | |
2921 re-export symbols from another shared object | |
2922 and do not export symbols if the user | |
2923 provides an explicit export list. */ | |
2924 if (shared_obj && !is_shared | |
2925 && which_pass == PASS_OBJ && !export_flag) | |
111 | 2926 { |
2927 /* Do not auto-export __dso_handle or | |
2928 __gcc_unwind_dbase. They are required | |
2929 to be local to each module. */ | |
2930 if (strcmp(name, "__dso_handle") != 0 | |
2931 && strcmp(name, "__gcc_unwind_dbase") != 0) | |
2932 { | |
2933 add_to_list (&exports, name); | |
2934 } | |
2935 } | |
0 | 2936 #endif |
2937 continue; | |
2938 } | |
2939 | |
2940 if (debug) | |
2941 fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n", | |
2942 symbol.n_scnum, symbol.n_sclass, | |
2943 (symbol.n_type ? "0" : ""), symbol.n_type, | |
2944 name); | |
2945 } | |
2946 } | |
2947 } | |
2948 #ifdef COLLECT_EXPORT_LIST | |
2949 else | |
2950 { | |
2951 /* If archive contains both 32-bit and 64-bit objects, | |
2952 we want to skip objects in other mode so mismatch normal. */ | |
2953 if (debug) | |
2954 fprintf (stderr, "%s : magic=%o aix64=%d mismatch\n", | |
2955 prog_name, HEADER (ldptr).f_magic, aix64_flag); | |
2956 } | |
2957 #endif | |
2958 } | |
2959 else | |
2960 { | |
111 | 2961 fatal_error (input_location, "%s: cannot open as COFF file", |
2962 prog_name); | |
0 | 2963 } |
2964 #ifdef COLLECT_EXPORT_LIST | |
2965 /* On AIX loop continues while there are more members in archive. */ | |
2966 } | |
2967 while (ldclose (ldptr) == FAILURE); | |
2968 #else | |
2969 /* Otherwise we simply close ldptr. */ | |
111 | 2970 (void) ldclose (ldptr); |
0 | 2971 #endif |
2972 } | |
2973 #endif /* OBJECT_FORMAT_COFF */ | |
2974 | |
2975 #ifdef COLLECT_EXPORT_LIST | |
2976 /* Given a library name without "lib" prefix, this function | |
2977 returns a full library name including a path. */ | |
2978 static char * | |
2979 resolve_lib_name (const char *name) | |
2980 { | |
2981 char *lib_buf; | |
2982 int i, j, l = 0; | |
2983 /* Library extensions for AIX dynamic linking. */ | |
2984 const char * const libexts[2] = {"a", "so"}; | |
2985 | |
2986 for (i = 0; libpaths[i]; i++) | |
2987 if (libpaths[i]->max_len > l) | |
2988 l = libpaths[i]->max_len; | |
2989 | |
111 | 2990 lib_buf = XNEWVEC (char, l + strlen (name) + 10); |
0 | 2991 |
2992 for (i = 0; libpaths[i]; i++) | |
2993 { | |
2994 struct prefix_list *list = libpaths[i]->plist; | |
2995 for (; list; list = list->next) | |
2996 { | |
2997 /* The following lines are needed because path_prefix list | |
111 | 2998 may contain directories both with trailing DIR_SEPARATOR and |
0 | 2999 without it. */ |
3000 const char *p = ""; | |
111 | 3001 if (!IS_DIR_SEPARATOR (list->prefix[strlen (list->prefix)-1])) |
0 | 3002 p = "/"; |
3003 for (j = 0; j < 2; j++) | |
3004 { | |
3005 sprintf (lib_buf, "%s%slib%s.%s", | |
3006 list->prefix, p, name, | |
3007 libexts[(j + aixrtl_flag) % 2]); | |
3008 if (debug) fprintf (stderr, "searching for: %s\n", lib_buf); | |
3009 if (file_exists (lib_buf)) | |
3010 { | |
3011 if (debug) fprintf (stderr, "found: %s\n", lib_buf); | |
3012 return (lib_buf); | |
3013 } | |
3014 } | |
3015 } | |
3016 } | |
3017 if (debug) | |
3018 fprintf (stderr, "not found\n"); | |
3019 else | |
111 | 3020 fatal_error (input_location, "library lib%s not found", name); |
0 | 3021 return (NULL); |
3022 } | |
3023 #endif /* COLLECT_EXPORT_LIST */ | |
67
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3024 |
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3025 #ifdef COLLECT_RUN_DSYMUTIL |
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3026 static int flag_dsym = false; |
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3027 static int flag_idsym = false; |
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3028 |
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3029 static void |
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3030 process_args (int *argcp, char **argv) { |
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3031 int i, j; |
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3032 int argc = *argcp; |
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3033 for (i=0; i<argc; ++i) |
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3034 { |
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3035 if (strcmp (argv[i], "-dsym") == 0) |
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3036 { |
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3037 flag_dsym = true; |
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3038 /* Remove the flag, as we handle all processing for it. */ |
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3039 j = i; |
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3040 do |
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3041 argv[j] = argv[j+1]; |
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3042 while (++j < argc); |
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3043 --i; |
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3044 argc = --(*argcp); |
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3045 } |
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3046 else if (strcmp (argv[i], "-idsym") == 0) |
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3047 { |
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3048 flag_idsym = true; |
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3049 /* Remove the flag, as we handle all processing for it. */ |
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3050 j = i; |
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3051 do |
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3052 argv[j] = argv[j+1]; |
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3053 while (++j < argc); |
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3054 --i; |
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3055 argc = --(*argcp); |
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3056 } |
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3057 } |
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3058 } |
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3059 |
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3060 static void |
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3061 do_dsymutil (const char *output_file) { |
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3062 const char *dsymutil = DSYMUTIL + 1; |
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3063 struct pex_obj *pex; |
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3064 char **real_argv = XCNEWVEC (char *, 3); |
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3065 const char ** argv = CONST_CAST2 (const char **, char **, |
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3066 real_argv); |
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3067 |
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3068 argv[0] = dsymutil; |
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3069 argv[1] = output_file; |
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3070 argv[2] = (char *) 0; |
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3071 |
111 | 3072 pex = collect_execute (dsymutil, real_argv, NULL, NULL, |
3073 PEX_LAST | PEX_SEARCH, false); | |
67
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3074 do_wait (dsymutil, pex); |
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3075 } |
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3076 |
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3077 static void |
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3078 post_ld_pass (bool temp_file) { |
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3079 if (!(temp_file && flag_idsym) && !flag_dsym) |
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3080 return; |
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3081 |
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3082 do_dsymutil (output_file); |
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3083 } |
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3084 #else |
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3085 static void |
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3086 process_args (int *argcp ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) { } |
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3087 static void post_ld_pass (bool temp_file ATTRIBUTE_UNUSED) { } |
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3088 #endif |