Fold integer-simple.git into ghc.git (re #8545)
[ghc.git] / rts / Linker.c
1 /* -----------------------------------------------------------------------------
2 *
3 * (c) The GHC Team, 2000-2012
4 *
5 * RTS Object Linker
6 *
7 * ---------------------------------------------------------------------------*/
8
9 #if 0
10 #include "PosixSource.h"
11 #endif
12
13 /* Linux needs _GNU_SOURCE to get RTLD_DEFAULT from <dlfcn.h> and
14 MREMAP_MAYMOVE from <sys/mman.h>.
15 */
16 #if defined(__linux__) || defined(__GLIBC__)
17 #define _GNU_SOURCE 1
18 #endif
19
20 #include "Rts.h"
21 #include "HsFFI.h"
22
23 #include "sm/Storage.h"
24 #include "Stats.h"
25 #include "Hash.h"
26 #include "LinkerInternals.h"
27 #include "RtsUtils.h"
28 #include "Trace.h"
29 #include "StgPrimFloat.h" // for __int_encodeFloat etc.
30 #include "Proftimer.h"
31 #include "GetEnv.h"
32 #include "Stable.h"
33
34 #if !defined(mingw32_HOST_OS)
35 #include "posix/Signals.h"
36 #endif
37
38 // get protos for is*()
39 #include <ctype.h>
40
41 #ifdef HAVE_SYS_TYPES_H
42 #include <sys/types.h>
43 #endif
44
45 #include <inttypes.h>
46 #include <stdlib.h>
47 #include <string.h>
48 #include <stdio.h>
49 #include <assert.h>
50 #include <libgen.h>
51
52 #ifdef HAVE_SYS_STAT_H
53 #include <sys/stat.h>
54 #endif
55
56 #if defined(HAVE_DLFCN_H)
57 #include <dlfcn.h>
58 #endif
59
60 #if defined(cygwin32_HOST_OS)
61 #ifdef HAVE_DIRENT_H
62 #include <dirent.h>
63 #endif
64
65 #ifdef HAVE_SYS_TIME_H
66 #include <sys/time.h>
67 #endif
68 #include <regex.h>
69 #include <sys/fcntl.h>
70 #include <sys/termios.h>
71 #include <sys/utime.h>
72 #include <sys/utsname.h>
73 #include <sys/wait.h>
74 #endif
75
76 #if (defined(powerpc_HOST_ARCH) && defined(linux_HOST_OS)) \
77 || (!defined(powerpc_HOST_ARCH) && \
78 ( defined(linux_HOST_OS) || defined(freebsd_HOST_OS) || \
79 defined(dragonfly_HOST_OS) || defined(netbsd_HOST_OS ) || \
80 defined(openbsd_HOST_OS ) || defined(darwin_HOST_OS ) || \
81 defined(kfreebsdgnu_HOST_OS) || defined(gnu_HOST_OS)))
82 /* Don't use mmap on powerpc_HOST_ARCH as mmap doesn't support
83 * reallocating but we need to allocate jump islands just after each
84 * object images. Otherwise relative branches to jump islands can fail
85 * due to 24-bits displacement overflow.
86 */
87 #define USE_MMAP
88 #include <fcntl.h>
89 #include <sys/mman.h>
90
91 #ifdef HAVE_UNISTD_H
92 #include <unistd.h>
93 #endif
94
95 #endif
96
97
98 /* PowerPC has relative branch instructions with only 24 bit displacements
99 * and therefore needs jump islands contiguous with each object code module.
100 */
101 #if (defined(USE_MMAP) && defined(powerpc_HOST_ARCH) && defined(linux_HOST_OS))
102 #define USE_CONTIGUOUS_MMAP 1
103 #else
104 #define USE_CONTIGUOUS_MMAP 0
105 #endif
106
107 #if defined(linux_HOST_OS) || defined(solaris2_HOST_OS) || defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS) || defined(netbsd_HOST_OS) || defined(openbsd_HOST_OS) || defined(gnu_HOST_OS)
108 # define OBJFORMAT_ELF
109 # include <regex.h> // regex is already used by dlopen() so this is OK
110 // to use here without requiring an additional lib
111 #elif defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
112 # define OBJFORMAT_PEi386
113 # include <windows.h>
114 # include <math.h>
115 #elif defined(darwin_HOST_OS)
116 # define OBJFORMAT_MACHO
117 # include <regex.h>
118 # include <mach/machine.h>
119 # include <mach-o/fat.h>
120 # include <mach-o/loader.h>
121 # include <mach-o/nlist.h>
122 # include <mach-o/reloc.h>
123 #if !defined(HAVE_DLFCN_H)
124 # include <mach-o/dyld.h>
125 #endif
126 #if defined(powerpc_HOST_ARCH)
127 # include <mach-o/ppc/reloc.h>
128 #endif
129 #if defined(x86_64_HOST_ARCH)
130 # include <mach-o/x86_64/reloc.h>
131 #endif
132 #endif
133
134 #if defined(x86_64_HOST_ARCH) && defined(darwin_HOST_OS)
135 #define ALWAYS_PIC
136 #endif
137
138 #if defined(dragonfly_HOST_OS)
139 #include <sys/tls.h>
140 #endif
141
142 typedef struct _RtsSymbolInfo {
143 void *value;
144 const ObjectCode *owner;
145 HsBool weak;
146 } RtsSymbolInfo;
147
148 /* Hash table mapping symbol names to RtsSymbolInfo */
149 static /*Str*/HashTable *symhash;
150
151 /* List of currently loaded objects */
152 ObjectCode *objects = NULL; /* initially empty */
153
154 /* List of objects that have been unloaded via unloadObj(), but are waiting
155 to be actually freed via checkUnload() */
156 ObjectCode *unloaded_objects = NULL; /* initially empty */
157
158 /* Type of the initializer */
159 typedef void (*init_t) (int argc, char **argv, char **env);
160
161 static HsInt isAlreadyLoaded( pathchar *path );
162 static HsInt loadOc( ObjectCode* oc );
163 static ObjectCode* mkOc( pathchar *path, char *image, int imageSize,
164 char *archiveMemberName
165 #ifndef USE_MMAP
166 #ifdef darwin_HOST_OS
167 , int misalignment
168 #endif
169 #endif
170 );
171
172 // Use wchar_t for pathnames on Windows (#5697)
173 #if defined(mingw32_HOST_OS)
174 #define pathcmp wcscmp
175 #define pathlen wcslen
176 #define pathopen _wfopen
177 #define pathstat _wstat
178 #define struct_stat struct _stat
179 #define open wopen
180 #define WSTR(s) L##s
181 #else
182 #define pathcmp strcmp
183 #define pathlen strlen
184 #define pathopen fopen
185 #define pathstat stat
186 #define struct_stat struct stat
187 #define WSTR(s) s
188 #endif
189
190 static pathchar* pathdup(pathchar *path)
191 {
192 pathchar *ret;
193 #if defined(mingw32_HOST_OS)
194 ret = wcsdup(path);
195 #else
196 /* sigh, strdup() isn't a POSIX function, so do it the long way */
197 ret = stgMallocBytes( strlen(path)+1, "loadObj" );
198 strcpy(ret, path);
199 #endif
200 return ret;
201 }
202
203
204 #if defined(OBJFORMAT_ELF)
205 static int ocVerifyImage_ELF ( ObjectCode* oc );
206 static int ocGetNames_ELF ( ObjectCode* oc );
207 static int ocResolve_ELF ( ObjectCode* oc );
208 static int ocRunInit_ELF ( ObjectCode* oc );
209 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
210 static int ocAllocateSymbolExtras_ELF ( ObjectCode* oc );
211 #endif
212 #elif defined(OBJFORMAT_PEi386)
213 static int ocVerifyImage_PEi386 ( ObjectCode* oc );
214 static int ocGetNames_PEi386 ( ObjectCode* oc );
215 static int ocResolve_PEi386 ( ObjectCode* oc );
216 static int ocRunInit_PEi386 ( ObjectCode* oc );
217 static void *lookupSymbolInDLLs ( unsigned char *lbl );
218 static void zapTrailingAtSign ( unsigned char *sym );
219 static char *allocateImageAndTrampolines (
220 #if defined(x86_64_HOST_ARCH)
221 FILE* f, pathchar* arch_name, char* member_name,
222 #endif
223 int size );
224 #if defined(x86_64_HOST_ARCH)
225 static int ocAllocateSymbolExtras_PEi386 ( ObjectCode* oc );
226 static size_t makeSymbolExtra_PEi386( ObjectCode* oc, size_t, char* symbol );
227 #define PEi386_IMAGE_OFFSET 4
228 #else
229 #define PEi386_IMAGE_OFFSET 0
230 #endif
231 #elif defined(OBJFORMAT_MACHO)
232 static int ocVerifyImage_MachO ( ObjectCode* oc );
233 static int ocGetNames_MachO ( ObjectCode* oc );
234 static int ocResolve_MachO ( ObjectCode* oc );
235 static int ocRunInit_MachO ( ObjectCode* oc );
236
237 #ifndef USE_MMAP
238 static int machoGetMisalignment( FILE * );
239 #endif
240 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
241 static int ocAllocateSymbolExtras_MachO ( ObjectCode* oc );
242 #endif
243 #ifdef powerpc_HOST_ARCH
244 static void machoInitSymbolsWithoutUnderscore( void );
245 #endif
246 #endif
247
248 static void freeProddableBlocks (ObjectCode *oc);
249
250 /* on x86_64 we have a problem with relocating symbol references in
251 * code that was compiled without -fPIC. By default, the small memory
252 * model is used, which assumes that symbol references can fit in a
253 * 32-bit slot. The system dynamic linker makes this work for
254 * references to shared libraries by either (a) allocating a jump
255 * table slot for code references, or (b) moving the symbol at load
256 * time (and copying its contents, if necessary) for data references.
257 *
258 * We unfortunately can't tell whether symbol references are to code
259 * or data. So for now we assume they are code (the vast majority
260 * are), and allocate jump-table slots. Unfortunately this will
261 * SILENTLY generate crashing code for data references. This hack is
262 * enabled by X86_64_ELF_NONPIC_HACK.
263 *
264 * One workaround is to use shared Haskell libraries. This is
265 * coming. Another workaround is to keep the static libraries but
266 * compile them with -fPIC, because that will generate PIC references
267 * to data which can be relocated. The PIC code is still too green to
268 * do this systematically, though.
269 *
270 * See bug #781
271 * See thread http://www.haskell.org/pipermail/cvs-ghc/2007-September/038458.html
272 *
273 * Naming Scheme for Symbol Macros
274 *
275 * SymI_*: symbol is internal to the RTS. It resides in an object
276 * file/library that is statically.
277 * SymE_*: symbol is external to the RTS library. It might be linked
278 * dynamically.
279 *
280 * Sym*_HasProto : the symbol prototype is imported in an include file
281 * or defined explicitly
282 * Sym*_NeedsProto: the symbol is undefined and we add a dummy
283 * default proto extern void sym(void);
284 */
285 #define X86_64_ELF_NONPIC_HACK 1
286
287 /* Link objects into the lower 2Gb on x86_64. GHC assumes the
288 * small memory model on this architecture (see gcc docs,
289 * -mcmodel=small).
290 *
291 * MAP_32BIT not available on OpenBSD/amd64
292 */
293 #if defined(x86_64_HOST_ARCH) && defined(MAP_32BIT)
294 #define TRY_MAP_32BIT MAP_32BIT
295 #else
296 #define TRY_MAP_32BIT 0
297 #endif
298
299 /*
300 * Due to the small memory model (see above), on x86_64 we have to map
301 * all our non-PIC object files into the low 2Gb of the address space
302 * (why 2Gb and not 4Gb? Because all addresses must be reachable
303 * using a 32-bit signed PC-relative offset). On Linux we can do this
304 * using the MAP_32BIT flag to mmap(), however on other OSs
305 * (e.g. *BSD, see #2063, and also on Linux inside Xen, see #2512), we
306 * can't do this. So on these systems, we have to pick a base address
307 * in the low 2Gb of the address space and try to allocate memory from
308 * there.
309 *
310 * We pick a default address based on the OS, but also make this
311 * configurable via an RTS flag (+RTS -xm)
312 */
313 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
314
315 #if defined(MAP_32BIT)
316 // Try to use MAP_32BIT
317 #define MMAP_32BIT_BASE_DEFAULT 0
318 #else
319 // A guess: 1Gb.
320 #define MMAP_32BIT_BASE_DEFAULT 0x40000000
321 #endif
322
323 static void *mmap_32bit_base = (void *)MMAP_32BIT_BASE_DEFAULT;
324 #endif
325
326 /* MAP_ANONYMOUS is MAP_ANON on some systems, e.g. OpenBSD */
327 #if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
328 #define MAP_ANONYMOUS MAP_ANON
329 #endif
330
331 /* -----------------------------------------------------------------------------
332 * Built-in symbols from the RTS
333 */
334
335 typedef struct _RtsSymbolVal {
336 char *lbl;
337 void *addr;
338 } RtsSymbolVal;
339
340 #define Maybe_Stable_Names SymI_HasProto(stg_mkWeakzh) \
341 SymI_HasProto(stg_mkWeakNoFinalizzerzh) \
342 SymI_HasProto(stg_addCFinalizzerToWeakzh) \
343 SymI_HasProto(stg_makeStableNamezh) \
344 SymI_HasProto(stg_finalizzeWeakzh)
345
346 #if !defined (mingw32_HOST_OS)
347 #define RTS_POSIX_ONLY_SYMBOLS \
348 SymI_HasProto(__hscore_get_saved_termios) \
349 SymI_HasProto(__hscore_set_saved_termios) \
350 SymI_HasProto(shutdownHaskellAndSignal) \
351 SymI_HasProto(signal_handlers) \
352 SymI_HasProto(stg_sig_install) \
353 SymI_HasProto(rtsTimerSignal) \
354 SymI_HasProto(atexit) \
355 SymI_NeedsProto(nocldstop)
356 #endif
357
358 #if defined (cygwin32_HOST_OS)
359 #define RTS_MINGW_ONLY_SYMBOLS /**/
360 /* Don't have the ability to read import libs / archives, so
361 * we have to stupidly list a lot of what libcygwin.a
362 * exports; sigh.
363 */
364 #define RTS_CYGWIN_ONLY_SYMBOLS \
365 SymI_HasProto(regfree) \
366 SymI_HasProto(regexec) \
367 SymI_HasProto(regerror) \
368 SymI_HasProto(regcomp) \
369 SymI_HasProto(__errno) \
370 SymI_HasProto(access) \
371 SymI_HasProto(chmod) \
372 SymI_HasProto(chdir) \
373 SymI_HasProto(close) \
374 SymI_HasProto(creat) \
375 SymI_HasProto(dup) \
376 SymI_HasProto(dup2) \
377 SymI_HasProto(fstat) \
378 SymI_HasProto(fcntl) \
379 SymI_HasProto(getcwd) \
380 SymI_HasProto(getenv) \
381 SymI_HasProto(lseek) \
382 SymI_HasProto(open) \
383 SymI_HasProto(fpathconf) \
384 SymI_HasProto(pathconf) \
385 SymI_HasProto(stat) \
386 SymI_HasProto(pow) \
387 SymI_HasProto(tanh) \
388 SymI_HasProto(cosh) \
389 SymI_HasProto(sinh) \
390 SymI_HasProto(atan) \
391 SymI_HasProto(acos) \
392 SymI_HasProto(asin) \
393 SymI_HasProto(tan) \
394 SymI_HasProto(cos) \
395 SymI_HasProto(sin) \
396 SymI_HasProto(exp) \
397 SymI_HasProto(log) \
398 SymI_HasProto(sqrt) \
399 SymI_HasProto(localtime_r) \
400 SymI_HasProto(gmtime_r) \
401 SymI_HasProto(mktime) \
402 SymI_NeedsProto(_imp___tzname) \
403 SymI_HasProto(gettimeofday) \
404 SymI_HasProto(timezone) \
405 SymI_HasProto(tcgetattr) \
406 SymI_HasProto(tcsetattr) \
407 SymI_HasProto(memcpy) \
408 SymI_HasProto(memmove) \
409 SymI_HasProto(realloc) \
410 SymI_HasProto(malloc) \
411 SymI_HasProto(free) \
412 SymI_HasProto(fork) \
413 SymI_HasProto(lstat) \
414 SymI_HasProto(isatty) \
415 SymI_HasProto(mkdir) \
416 SymI_HasProto(opendir) \
417 SymI_HasProto(readdir) \
418 SymI_HasProto(rewinddir) \
419 SymI_HasProto(closedir) \
420 SymI_HasProto(link) \
421 SymI_HasProto(mkfifo) \
422 SymI_HasProto(pipe) \
423 SymI_HasProto(read) \
424 SymI_HasProto(rename) \
425 SymI_HasProto(rmdir) \
426 SymI_HasProto(select) \
427 SymI_HasProto(system) \
428 SymI_HasProto(write) \
429 SymI_HasProto(strcmp) \
430 SymI_HasProto(strcpy) \
431 SymI_HasProto(strncpy) \
432 SymI_HasProto(strerror) \
433 SymI_HasProto(sigaddset) \
434 SymI_HasProto(sigemptyset) \
435 SymI_HasProto(sigprocmask) \
436 SymI_HasProto(umask) \
437 SymI_HasProto(uname) \
438 SymI_HasProto(unlink) \
439 SymI_HasProto(utime) \
440 SymI_HasProto(waitpid)
441
442 #elif defined(mingw32_HOST_OS)
443 #define RTS_POSIX_ONLY_SYMBOLS /**/
444 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
445
446 #if HAVE_GETTIMEOFDAY
447 #define RTS_MINGW_GETTIMEOFDAY_SYM SymI_NeedsProto(gettimeofday)
448 #else
449 #define RTS_MINGW_GETTIMEOFDAY_SYM /**/
450 #endif
451
452 #if HAVE___MINGW_VFPRINTF
453 #define RTS___MINGW_VFPRINTF_SYM SymI_HasProto(__mingw_vfprintf)
454 #else
455 #define RTS___MINGW_VFPRINTF_SYM /**/
456 #endif
457
458 #if defined(i386_HOST_ARCH)
459 #define RTS_WIN32_ONLY(X) X
460 #else
461 #define RTS_WIN32_ONLY(X) /**/
462 #endif
463
464 #if defined(x86_64_HOST_ARCH)
465 #define RTS_WIN64_ONLY(X) X
466 #else
467 #define RTS_WIN64_ONLY(X) /**/
468 #endif
469
470 /* These are statically linked from the mingw libraries into the ghc
471 executable, so we have to employ this hack. */
472 #define RTS_MINGW_ONLY_SYMBOLS \
473 SymI_HasProto(stg_asyncReadzh) \
474 SymI_HasProto(stg_asyncWritezh) \
475 SymI_HasProto(stg_asyncDoProczh) \
476 SymI_HasProto(getWin32ProgArgv) \
477 SymI_HasProto(setWin32ProgArgv) \
478 SymI_HasProto(memset) \
479 SymI_HasProto(inet_ntoa) \
480 SymI_HasProto(inet_addr) \
481 SymI_HasProto(htonl) \
482 SymI_HasProto(recvfrom) \
483 SymI_HasProto(listen) \
484 SymI_HasProto(bind) \
485 SymI_HasProto(shutdown) \
486 SymI_HasProto(connect) \
487 SymI_HasProto(htons) \
488 SymI_HasProto(ntohs) \
489 SymI_HasProto(getservbyname) \
490 SymI_HasProto(getservbyport) \
491 SymI_HasProto(getprotobynumber) \
492 SymI_HasProto(getprotobyname) \
493 SymI_HasProto(gethostbyname) \
494 SymI_HasProto(gethostbyaddr) \
495 SymI_HasProto(gethostname) \
496 SymI_HasProto(strcpy) \
497 SymI_HasProto(strncpy) \
498 SymI_HasProto(abort) \
499 RTS_WIN32_ONLY(SymI_NeedsProto(_alloca)) \
500 SymI_HasProto(isxdigit) \
501 SymI_HasProto(isupper) \
502 SymI_HasProto(ispunct) \
503 SymI_HasProto(islower) \
504 SymI_HasProto(isspace) \
505 SymI_HasProto(isprint) \
506 SymI_HasProto(isdigit) \
507 SymI_HasProto(iscntrl) \
508 SymI_HasProto(isalpha) \
509 SymI_HasProto(isalnum) \
510 SymI_HasProto(isascii) \
511 RTS___MINGW_VFPRINTF_SYM \
512 SymI_HasProto(strcmp) \
513 SymI_HasProto(memmove) \
514 SymI_HasProto(realloc) \
515 SymI_HasProto(malloc) \
516 SymI_HasProto(pow) \
517 SymI_HasProto(tanh) \
518 SymI_HasProto(cosh) \
519 SymI_HasProto(sinh) \
520 SymI_HasProto(atan) \
521 SymI_HasProto(acos) \
522 SymI_HasProto(asin) \
523 SymI_HasProto(tan) \
524 SymI_HasProto(cos) \
525 SymI_HasProto(sin) \
526 SymI_HasProto(exp) \
527 SymI_HasProto(log) \
528 SymI_HasProto(sqrt) \
529 SymI_HasProto(powf) \
530 SymI_HasProto(tanhf) \
531 SymI_HasProto(coshf) \
532 SymI_HasProto(sinhf) \
533 SymI_HasProto(atanf) \
534 SymI_HasProto(acosf) \
535 SymI_HasProto(asinf) \
536 SymI_HasProto(tanf) \
537 SymI_HasProto(cosf) \
538 SymI_HasProto(sinf) \
539 SymI_HasProto(expf) \
540 SymI_HasProto(logf) \
541 SymI_HasProto(sqrtf) \
542 SymI_HasProto(erf) \
543 SymI_HasProto(erfc) \
544 SymI_HasProto(erff) \
545 SymI_HasProto(erfcf) \
546 SymI_HasProto(memcpy) \
547 SymI_HasProto(rts_InstallConsoleEvent) \
548 SymI_HasProto(rts_ConsoleHandlerDone) \
549 SymI_NeedsProto(mktime) \
550 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___timezone)) \
551 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___tzname)) \
552 RTS_WIN32_ONLY(SymI_NeedsProto(_imp__tzname)) \
553 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___iob)) \
554 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___osver)) \
555 SymI_NeedsProto(localtime) \
556 SymI_NeedsProto(gmtime) \
557 SymI_NeedsProto(opendir) \
558 SymI_NeedsProto(readdir) \
559 SymI_NeedsProto(rewinddir) \
560 RTS_WIN32_ONLY(SymI_NeedsProto(_imp____mb_cur_max)) \
561 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___pctype)) \
562 RTS_WIN32_ONLY(SymI_NeedsProto(__chkstk)) \
563 RTS_WIN64_ONLY(SymI_NeedsProto(__imp___iob_func)) \
564 RTS_WIN64_ONLY(SymI_NeedsProto(___chkstk_ms)) \
565 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_localeconv)) \
566 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_islower)) \
567 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isspace)) \
568 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isxdigit)) \
569 RTS_WIN64_ONLY(SymI_HasProto(close)) \
570 RTS_WIN64_ONLY(SymI_HasProto(read)) \
571 RTS_WIN64_ONLY(SymI_HasProto(dup)) \
572 RTS_WIN64_ONLY(SymI_HasProto(dup2)) \
573 RTS_WIN64_ONLY(SymI_HasProto(write)) \
574 SymI_NeedsProto(getpid) \
575 RTS_WIN64_ONLY(SymI_HasProto(access)) \
576 SymI_HasProto(chmod) \
577 RTS_WIN64_ONLY(SymI_HasProto(creat)) \
578 RTS_WIN64_ONLY(SymI_HasProto(umask)) \
579 SymI_HasProto(unlink) \
580 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__errno)) \
581 RTS_WIN64_ONLY(SymI_NeedsProto(ftruncate64)) \
582 RTS_WIN64_ONLY(SymI_HasProto(setmode)) \
583 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wstat64)) \
584 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__fstat64)) \
585 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wsopen)) \
586 RTS_WIN64_ONLY(SymI_HasProto(__imp__environ)) \
587 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileAttributesA)) \
588 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileInformationByHandle)) \
589 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileType)) \
590 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetLastError)) \
591 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceFrequency)) \
592 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceCounter)) \
593 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetTickCount)) \
594 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WaitForSingleObject)) \
595 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekConsoleInputA)) \
596 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ReadConsoleInputA)) \
597 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekNamedPipe)) \
598 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__isatty)) \
599 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_select)) \
600 RTS_WIN64_ONLY(SymI_HasProto(isatty)) \
601 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__get_osfhandle)) \
602 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetConsoleMode)) \
603 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetConsoleMode)) \
604 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FlushConsoleInputBuffer)) \
605 RTS_WIN64_ONLY(SymI_HasProto(free)) \
606 RTS_WIN64_ONLY(SymI_NeedsProto(raise)) \
607 RTS_WIN64_ONLY(SymI_NeedsProto(_getpid)) \
608 RTS_WIN64_ONLY(SymI_HasProto(getc)) \
609 RTS_WIN64_ONLY(SymI_HasProto(ungetc)) \
610 RTS_WIN64_ONLY(SymI_HasProto(puts)) \
611 RTS_WIN64_ONLY(SymI_HasProto(putc)) \
612 RTS_WIN64_ONLY(SymI_HasProto(putchar)) \
613 RTS_WIN64_ONLY(SymI_HasProto(fputc)) \
614 RTS_WIN64_ONLY(SymI_HasProto(fread)) \
615 RTS_WIN64_ONLY(SymI_HasProto(fwrite)) \
616 RTS_WIN64_ONLY(SymI_HasProto(ferror)) \
617 RTS_WIN64_ONLY(SymI_HasProto(printf)) \
618 RTS_WIN64_ONLY(SymI_HasProto(fprintf)) \
619 RTS_WIN64_ONLY(SymI_HasProto(sprintf)) \
620 RTS_WIN64_ONLY(SymI_HasProto(vsprintf)) \
621 RTS_WIN64_ONLY(SymI_HasProto(sscanf)) \
622 RTS_WIN64_ONLY(SymI_HasProto(ldexp)) \
623 RTS_WIN64_ONLY(SymI_HasProto(strlen)) \
624 RTS_WIN64_ONLY(SymI_HasProto(strnlen)) \
625 RTS_WIN64_ONLY(SymI_HasProto(strchr)) \
626 RTS_WIN64_ONLY(SymI_HasProto(strtol)) \
627 RTS_WIN64_ONLY(SymI_HasProto(strerror)) \
628 RTS_WIN64_ONLY(SymI_HasProto(memchr)) \
629 RTS_WIN64_ONLY(SymI_HasProto(memcmp)) \
630 RTS_WIN64_ONLY(SymI_HasProto(wcscpy)) \
631 RTS_WIN64_ONLY(SymI_HasProto(wcslen)) \
632 RTS_WIN64_ONLY(SymI_HasProto(_lseeki64)) \
633 RTS_WIN64_ONLY(SymI_HasProto(_wchmod)) \
634 RTS_WIN64_ONLY(SymI_HasProto(closesocket)) \
635 RTS_WIN64_ONLY(SymI_HasProto(send)) \
636 RTS_WIN64_ONLY(SymI_HasProto(recv)) \
637 RTS_WIN64_ONLY(SymI_HasProto(bsearch)) \
638 RTS_WIN64_ONLY(SymI_HasProto(CommandLineToArgvW)) \
639 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmap)) \
640 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmapIndirect)) \
641 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleBitmap)) \
642 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBPatternBrushPt)) \
643 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBitmap)) \
644 RTS_WIN64_ONLY(SymI_HasProto(SetBitmapDimensionEx)) \
645 RTS_WIN64_ONLY(SymI_HasProto(GetBitmapDimensionEx)) \
646 RTS_WIN64_ONLY(SymI_HasProto(GetStockObject)) \
647 RTS_WIN64_ONLY(SymI_HasProto(GetObjectW)) \
648 RTS_WIN64_ONLY(SymI_HasProto(DeleteObject)) \
649 RTS_WIN64_ONLY(SymI_HasProto(SetDIBits)) \
650 RTS_WIN64_ONLY(SymI_HasProto(GetDIBits)) \
651 RTS_WIN64_ONLY(SymI_HasProto(CreateSolidBrush)) \
652 RTS_WIN64_ONLY(SymI_HasProto(CreateHatchBrush)) \
653 RTS_WIN64_ONLY(SymI_HasProto(CreatePatternBrush)) \
654 RTS_WIN64_ONLY(SymI_HasProto(CreateFontW)) \
655 RTS_WIN64_ONLY(SymI_HasProto(AngleArc)) \
656 RTS_WIN64_ONLY(SymI_HasProto(Arc)) \
657 RTS_WIN64_ONLY(SymI_HasProto(ArcTo)) \
658 RTS_WIN64_ONLY(SymI_HasProto(BeginPath)) \
659 RTS_WIN64_ONLY(SymI_HasProto(BitBlt)) \
660 RTS_WIN64_ONLY(SymI_HasProto(CancelDC)) \
661 RTS_WIN64_ONLY(SymI_HasProto(Chord)) \
662 RTS_WIN64_ONLY(SymI_HasProto(CloseFigure)) \
663 RTS_WIN64_ONLY(SymI_HasProto(CombineRgn)) \
664 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleDC)) \
665 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgn)) \
666 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgnIndirect)) \
667 RTS_WIN64_ONLY(SymI_HasProto(CreatePen)) \
668 RTS_WIN64_ONLY(SymI_HasProto(CreatePolygonRgn)) \
669 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgn)) \
670 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgnIndirect)) \
671 RTS_WIN64_ONLY(SymI_HasProto(CreateRoundRectRgn)) \
672 RTS_WIN64_ONLY(SymI_HasProto(DeleteDC)) \
673 RTS_WIN64_ONLY(SymI_HasProto(Ellipse)) \
674 RTS_WIN64_ONLY(SymI_HasProto(EndPath)) \
675 RTS_WIN64_ONLY(SymI_HasProto(EqualRgn)) \
676 RTS_WIN64_ONLY(SymI_HasProto(ExtSelectClipRgn)) \
677 RTS_WIN64_ONLY(SymI_HasProto(FillPath)) \
678 RTS_WIN64_ONLY(SymI_HasProto(FillRgn)) \
679 RTS_WIN64_ONLY(SymI_HasProto(FlattenPath)) \
680 RTS_WIN64_ONLY(SymI_HasProto(FrameRgn)) \
681 RTS_WIN64_ONLY(SymI_HasProto(GetArcDirection)) \
682 RTS_WIN64_ONLY(SymI_HasProto(GetBkColor)) \
683 RTS_WIN64_ONLY(SymI_HasProto(GetBkMode)) \
684 RTS_WIN64_ONLY(SymI_HasProto(GetBrushOrgEx)) \
685 RTS_WIN64_ONLY(SymI_HasProto(GetCurrentObject)) \
686 RTS_WIN64_ONLY(SymI_HasProto(GetDCOrgEx)) \
687 RTS_WIN64_ONLY(SymI_HasProto(GetGraphicsMode)) \
688 RTS_WIN64_ONLY(SymI_HasProto(GetMiterLimit)) \
689 RTS_WIN64_ONLY(SymI_HasProto(GetPolyFillMode)) \
690 RTS_WIN64_ONLY(SymI_HasProto(GetRgnBox)) \
691 RTS_WIN64_ONLY(SymI_HasProto(GetStretchBltMode)) \
692 RTS_WIN64_ONLY(SymI_HasProto(GetTextAlign)) \
693 RTS_WIN64_ONLY(SymI_HasProto(GetTextCharacterExtra)) \
694 RTS_WIN64_ONLY(SymI_HasProto(GetTextColor)) \
695 RTS_WIN64_ONLY(SymI_HasProto(GetTextExtentPoint32W)) \
696 RTS_WIN64_ONLY(SymI_HasProto(InvertRgn)) \
697 RTS_WIN64_ONLY(SymI_HasProto(LineTo)) \
698 RTS_WIN64_ONLY(SymI_HasProto(MaskBlt)) \
699 RTS_WIN64_ONLY(SymI_HasProto(MoveToEx)) \
700 RTS_WIN64_ONLY(SymI_HasProto(OffsetRgn)) \
701 RTS_WIN64_ONLY(SymI_HasProto(PaintRgn)) \
702 RTS_WIN64_ONLY(SymI_HasProto(PathToRegion)) \
703 RTS_WIN64_ONLY(SymI_HasProto(Pie)) \
704 RTS_WIN64_ONLY(SymI_HasProto(PlgBlt)) \
705 RTS_WIN64_ONLY(SymI_HasProto(PolyBezier)) \
706 RTS_WIN64_ONLY(SymI_HasProto(PolyBezierTo)) \
707 RTS_WIN64_ONLY(SymI_HasProto(Polygon)) \
708 RTS_WIN64_ONLY(SymI_HasProto(Polyline)) \
709 RTS_WIN64_ONLY(SymI_HasProto(PolylineTo)) \
710 RTS_WIN64_ONLY(SymI_HasProto(PtInRegion)) \
711 RTS_WIN64_ONLY(SymI_HasProto(Rectangle)) \
712 RTS_WIN64_ONLY(SymI_HasProto(RectInRegion)) \
713 RTS_WIN64_ONLY(SymI_HasProto(RestoreDC)) \
714 RTS_WIN64_ONLY(SymI_HasProto(RoundRect)) \
715 RTS_WIN64_ONLY(SymI_HasProto(SaveDC)) \
716 RTS_WIN64_ONLY(SymI_HasProto(SelectClipPath)) \
717 RTS_WIN64_ONLY(SymI_HasProto(SelectClipRgn)) \
718 RTS_WIN64_ONLY(SymI_HasProto(SelectObject)) \
719 RTS_WIN64_ONLY(SymI_HasProto(SelectPalette)) \
720 RTS_WIN64_ONLY(SymI_HasProto(SetArcDirection)) \
721 RTS_WIN64_ONLY(SymI_HasProto(SetBkColor)) \
722 RTS_WIN64_ONLY(SymI_HasProto(SetBkMode)) \
723 RTS_WIN64_ONLY(SymI_HasProto(SetBrushOrgEx)) \
724 RTS_WIN64_ONLY(SymI_HasProto(SetGraphicsMode)) \
725 RTS_WIN64_ONLY(SymI_HasProto(SetMiterLimit)) \
726 RTS_WIN64_ONLY(SymI_HasProto(SetPolyFillMode)) \
727 RTS_WIN64_ONLY(SymI_HasProto(SetStretchBltMode)) \
728 RTS_WIN64_ONLY(SymI_HasProto(SetTextAlign)) \
729 RTS_WIN64_ONLY(SymI_HasProto(SetTextCharacterExtra)) \
730 RTS_WIN64_ONLY(SymI_HasProto(SetTextColor)) \
731 RTS_WIN64_ONLY(SymI_HasProto(StretchBlt)) \
732 RTS_WIN64_ONLY(SymI_HasProto(StrokeAndFillPath)) \
733 RTS_WIN64_ONLY(SymI_HasProto(StrokePath)) \
734 RTS_WIN64_ONLY(SymI_HasProto(TextOutW)) \
735 RTS_WIN64_ONLY(SymI_HasProto(timeGetTime)) \
736 RTS_WIN64_ONLY(SymI_HasProto(WidenPath)) \
737 RTS_WIN64_ONLY(SymI_HasProto(GetFileSecurityW)) \
738 RTS_WIN64_ONLY(SymI_HasProto(RegCloseKey)) \
739 RTS_WIN64_ONLY(SymI_HasProto(RegConnectRegistryW)) \
740 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyExW)) \
741 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyW)) \
742 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteKeyW)) \
743 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteValueW)) \
744 RTS_WIN64_ONLY(SymI_HasProto(RegEnumKeyW)) \
745 RTS_WIN64_ONLY(SymI_HasProto(RegEnumValueW)) \
746 RTS_WIN64_ONLY(SymI_HasProto(RegFlushKey)) \
747 RTS_WIN64_ONLY(SymI_HasProto(RegLoadKeyW)) \
748 RTS_WIN64_ONLY(SymI_HasProto(RegNotifyChangeKeyValue)) \
749 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyExW)) \
750 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyW)) \
751 RTS_WIN64_ONLY(SymI_HasProto(RegQueryInfoKeyW)) \
752 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueExW)) \
753 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueW)) \
754 RTS_WIN64_ONLY(SymI_HasProto(RegReplaceKeyW)) \
755 RTS_WIN64_ONLY(SymI_HasProto(RegRestoreKeyW)) \
756 RTS_WIN64_ONLY(SymI_HasProto(RegSaveKeyW)) \
757 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueExW)) \
758 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueW)) \
759 RTS_WIN64_ONLY(SymI_HasProto(RegUnLoadKeyW)) \
760 RTS_WIN64_ONLY(SymI_NeedsProto(SHGetFolderPathW)) \
761 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetWindowLongPtrW)) \
762 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetWindowLongPtrW)) \
763 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_MenuItemFromPoint)) \
764 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPoint)) \
765 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPointEx)) \
766 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DeleteObject)) \
767 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_UnmapViewOfFile)) \
768 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CloseHandle)) \
769 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FreeLibrary)) \
770 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetMessageW)) \
771 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TranslateMessage)) \
772 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DispatchMessageW)) \
773 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DefWindowProcW)) \
774 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetDIBits)) \
775 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalAlloc)) \
776 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalFree)) \
777 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateFileW)) \
778 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WriteFile)) \
779 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateCompatibleBitmap)) \
780 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SelectObject)) \
781 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_Polygon)) \
782 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FormatMessageW)) \
783 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__localtime64)) \
784 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__tzname)) \
785 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__timezone)) \
786 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreatePipe)) \
787 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetHandleInformation)) \
788 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetStdHandle)) \
789 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetCurrentProcess)) \
790 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DuplicateHandle)) \
791 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateProcessW)) \
792 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TerminateProcess)) \
793 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__open_osfhandle)) \
794 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetExitCodeProcess)) \
795 RTS_MINGW_GETTIMEOFDAY_SYM \
796 SymI_NeedsProto(closedir)
797
798 #else
799 #define RTS_MINGW_ONLY_SYMBOLS /**/
800 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
801 #endif
802
803
804 #if defined(darwin_HOST_OS) && HAVE_PRINTF_LDBLSTUB
805 #define RTS_DARWIN_ONLY_SYMBOLS \
806 SymI_NeedsProto(asprintf$LDBLStub) \
807 SymI_NeedsProto(err$LDBLStub) \
808 SymI_NeedsProto(errc$LDBLStub) \
809 SymI_NeedsProto(errx$LDBLStub) \
810 SymI_NeedsProto(fprintf$LDBLStub) \
811 SymI_NeedsProto(fscanf$LDBLStub) \
812 SymI_NeedsProto(fwprintf$LDBLStub) \
813 SymI_NeedsProto(fwscanf$LDBLStub) \
814 SymI_NeedsProto(printf$LDBLStub) \
815 SymI_NeedsProto(scanf$LDBLStub) \
816 SymI_NeedsProto(snprintf$LDBLStub) \
817 SymI_NeedsProto(sprintf$LDBLStub) \
818 SymI_NeedsProto(sscanf$LDBLStub) \
819 SymI_NeedsProto(strtold$LDBLStub) \
820 SymI_NeedsProto(swprintf$LDBLStub) \
821 SymI_NeedsProto(swscanf$LDBLStub) \
822 SymI_NeedsProto(syslog$LDBLStub) \
823 SymI_NeedsProto(vasprintf$LDBLStub) \
824 SymI_NeedsProto(verr$LDBLStub) \
825 SymI_NeedsProto(verrc$LDBLStub) \
826 SymI_NeedsProto(verrx$LDBLStub) \
827 SymI_NeedsProto(vfprintf$LDBLStub) \
828 SymI_NeedsProto(vfscanf$LDBLStub) \
829 SymI_NeedsProto(vfwprintf$LDBLStub) \
830 SymI_NeedsProto(vfwscanf$LDBLStub) \
831 SymI_NeedsProto(vprintf$LDBLStub) \
832 SymI_NeedsProto(vscanf$LDBLStub) \
833 SymI_NeedsProto(vsnprintf$LDBLStub) \
834 SymI_NeedsProto(vsprintf$LDBLStub) \
835 SymI_NeedsProto(vsscanf$LDBLStub) \
836 SymI_NeedsProto(vswprintf$LDBLStub) \
837 SymI_NeedsProto(vswscanf$LDBLStub) \
838 SymI_NeedsProto(vsyslog$LDBLStub) \
839 SymI_NeedsProto(vwarn$LDBLStub) \
840 SymI_NeedsProto(vwarnc$LDBLStub) \
841 SymI_NeedsProto(vwarnx$LDBLStub) \
842 SymI_NeedsProto(vwprintf$LDBLStub) \
843 SymI_NeedsProto(vwscanf$LDBLStub) \
844 SymI_NeedsProto(warn$LDBLStub) \
845 SymI_NeedsProto(warnc$LDBLStub) \
846 SymI_NeedsProto(warnx$LDBLStub) \
847 SymI_NeedsProto(wcstold$LDBLStub) \
848 SymI_NeedsProto(wprintf$LDBLStub) \
849 SymI_NeedsProto(wscanf$LDBLStub)
850 #else
851 #define RTS_DARWIN_ONLY_SYMBOLS
852 #endif
853
854 #ifndef SMP
855 # define MAIN_CAP_SYM SymI_HasProto(MainCapability)
856 #else
857 # define MAIN_CAP_SYM
858 #endif
859
860 #if !defined(mingw32_HOST_OS)
861 #define RTS_USER_SIGNALS_SYMBOLS \
862 SymI_HasProto(setIOManagerControlFd) \
863 SymI_HasProto(setIOManagerWakeupFd) \
864 SymI_HasProto(ioManagerWakeup) \
865 SymI_HasProto(blockUserSignals) \
866 SymI_HasProto(unblockUserSignals)
867 #else
868 #define RTS_USER_SIGNALS_SYMBOLS \
869 SymI_HasProto(ioManagerWakeup) \
870 SymI_HasProto(sendIOManagerEvent) \
871 SymI_HasProto(readIOManagerEvent) \
872 SymI_HasProto(getIOManagerEvent) \
873 SymI_HasProto(console_handler)
874 #endif
875
876 #define RTS_LIBFFI_SYMBOLS \
877 SymE_NeedsProto(ffi_prep_cif) \
878 SymE_NeedsProto(ffi_call) \
879 SymE_NeedsProto(ffi_type_void) \
880 SymE_NeedsProto(ffi_type_float) \
881 SymE_NeedsProto(ffi_type_double) \
882 SymE_NeedsProto(ffi_type_sint64) \
883 SymE_NeedsProto(ffi_type_uint64) \
884 SymE_NeedsProto(ffi_type_sint32) \
885 SymE_NeedsProto(ffi_type_uint32) \
886 SymE_NeedsProto(ffi_type_sint16) \
887 SymE_NeedsProto(ffi_type_uint16) \
888 SymE_NeedsProto(ffi_type_sint8) \
889 SymE_NeedsProto(ffi_type_uint8) \
890 SymE_NeedsProto(ffi_type_pointer)
891
892 #ifdef TABLES_NEXT_TO_CODE
893 #define RTS_RET_SYMBOLS /* nothing */
894 #else
895 #define RTS_RET_SYMBOLS \
896 SymI_HasProto(stg_enter_ret) \
897 SymI_HasProto(stg_gc_fun_ret) \
898 SymI_HasProto(stg_ap_v_ret) \
899 SymI_HasProto(stg_ap_f_ret) \
900 SymI_HasProto(stg_ap_d_ret) \
901 SymI_HasProto(stg_ap_l_ret) \
902 SymI_HasProto(stg_ap_v16_ret) \
903 SymI_HasProto(stg_ap_v32_ret) \
904 SymI_HasProto(stg_ap_v64_ret) \
905 SymI_HasProto(stg_ap_n_ret) \
906 SymI_HasProto(stg_ap_p_ret) \
907 SymI_HasProto(stg_ap_pv_ret) \
908 SymI_HasProto(stg_ap_pp_ret) \
909 SymI_HasProto(stg_ap_ppv_ret) \
910 SymI_HasProto(stg_ap_ppp_ret) \
911 SymI_HasProto(stg_ap_pppv_ret) \
912 SymI_HasProto(stg_ap_pppp_ret) \
913 SymI_HasProto(stg_ap_ppppp_ret) \
914 SymI_HasProto(stg_ap_pppppp_ret)
915 #endif
916
917 /* Modules compiled with -ticky may mention ticky counters */
918 /* This list should marry up with the one in $(TOP)/includes/stg/Ticky.h */
919 #define RTS_TICKY_SYMBOLS \
920 SymI_NeedsProto(ticky_entry_ctrs) \
921 SymI_NeedsProto(top_ct) \
922 \
923 SymI_HasProto(ENT_VIA_NODE_ctr) \
924 SymI_HasProto(ENT_STATIC_THK_SINGLE_ctr) \
925 SymI_HasProto(ENT_STATIC_THK_MANY_ctr) \
926 SymI_HasProto(ENT_DYN_THK_SINGLE_ctr) \
927 SymI_HasProto(ENT_DYN_THK_MANY_ctr) \
928 SymI_HasProto(ENT_STATIC_FUN_DIRECT_ctr) \
929 SymI_HasProto(ENT_DYN_FUN_DIRECT_ctr) \
930 SymI_HasProto(ENT_STATIC_CON_ctr) \
931 SymI_HasProto(ENT_DYN_CON_ctr) \
932 SymI_HasProto(ENT_STATIC_IND_ctr) \
933 SymI_HasProto(ENT_DYN_IND_ctr) \
934 SymI_HasProto(ENT_PERM_IND_ctr) \
935 SymI_HasProto(ENT_PAP_ctr) \
936 SymI_HasProto(ENT_AP_ctr) \
937 SymI_HasProto(ENT_AP_STACK_ctr) \
938 SymI_HasProto(ENT_BH_ctr) \
939 SymI_HasProto(ENT_LNE_ctr) \
940 SymI_HasProto(UNKNOWN_CALL_ctr) \
941 SymI_HasProto(SLOW_CALL_fast_v16_ctr) \
942 SymI_HasProto(SLOW_CALL_fast_v_ctr) \
943 SymI_HasProto(SLOW_CALL_fast_f_ctr) \
944 SymI_HasProto(SLOW_CALL_fast_d_ctr) \
945 SymI_HasProto(SLOW_CALL_fast_l_ctr) \
946 SymI_HasProto(SLOW_CALL_fast_n_ctr) \
947 SymI_HasProto(SLOW_CALL_fast_p_ctr) \
948 SymI_HasProto(SLOW_CALL_fast_pv_ctr) \
949 SymI_HasProto(SLOW_CALL_fast_pp_ctr) \
950 SymI_HasProto(SLOW_CALL_fast_ppv_ctr) \
951 SymI_HasProto(SLOW_CALL_fast_ppp_ctr) \
952 SymI_HasProto(SLOW_CALL_fast_pppv_ctr) \
953 SymI_HasProto(SLOW_CALL_fast_pppp_ctr) \
954 SymI_HasProto(SLOW_CALL_fast_ppppp_ctr) \
955 SymI_HasProto(SLOW_CALL_fast_pppppp_ctr) \
956 SymI_HasProto(VERY_SLOW_CALL_ctr) \
957 SymI_HasProto(ticky_slow_call_unevald) \
958 SymI_HasProto(SLOW_CALL_ctr) \
959 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_ctr) \
960 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_CHUNKS_ctr) \
961 SymI_HasProto(KNOWN_CALL_ctr) \
962 SymI_HasProto(KNOWN_CALL_TOO_FEW_ARGS_ctr) \
963 SymI_HasProto(KNOWN_CALL_EXTRA_ARGS_ctr) \
964 SymI_HasProto(SLOW_CALL_FUN_TOO_FEW_ctr) \
965 SymI_HasProto(SLOW_CALL_FUN_CORRECT_ctr) \
966 SymI_HasProto(SLOW_CALL_FUN_TOO_MANY_ctr) \
967 SymI_HasProto(SLOW_CALL_PAP_TOO_FEW_ctr) \
968 SymI_HasProto(SLOW_CALL_PAP_CORRECT_ctr) \
969 SymI_HasProto(SLOW_CALL_PAP_TOO_MANY_ctr) \
970 SymI_HasProto(SLOW_CALL_UNEVALD_ctr) \
971 SymI_HasProto(UPDF_OMITTED_ctr) \
972 SymI_HasProto(UPDF_PUSHED_ctr) \
973 SymI_HasProto(CATCHF_PUSHED_ctr) \
974 SymI_HasProto(UPDF_RCC_PUSHED_ctr) \
975 SymI_HasProto(UPDF_RCC_OMITTED_ctr) \
976 SymI_HasProto(UPD_SQUEEZED_ctr) \
977 SymI_HasProto(UPD_CON_IN_NEW_ctr) \
978 SymI_HasProto(UPD_CON_IN_PLACE_ctr) \
979 SymI_HasProto(UPD_PAP_IN_NEW_ctr) \
980 SymI_HasProto(UPD_PAP_IN_PLACE_ctr) \
981 SymI_HasProto(ALLOC_HEAP_ctr) \
982 SymI_HasProto(ALLOC_HEAP_tot) \
983 SymI_HasProto(HEAP_CHK_ctr) \
984 SymI_HasProto(STK_CHK_ctr) \
985 SymI_HasProto(ALLOC_RTS_ctr) \
986 SymI_HasProto(ALLOC_RTS_tot) \
987 SymI_HasProto(ALLOC_FUN_ctr) \
988 SymI_HasProto(ALLOC_FUN_adm) \
989 SymI_HasProto(ALLOC_FUN_gds) \
990 SymI_HasProto(ALLOC_FUN_slp) \
991 SymI_HasProto(UPD_NEW_IND_ctr) \
992 SymI_HasProto(UPD_NEW_PERM_IND_ctr) \
993 SymI_HasProto(UPD_OLD_IND_ctr) \
994 SymI_HasProto(UPD_OLD_PERM_IND_ctr) \
995 SymI_HasProto(UPD_CAF_BH_UPDATABLE_ctr) \
996 SymI_HasProto(UPD_CAF_BH_SINGLE_ENTRY_ctr) \
997 SymI_HasProto(GC_SEL_ABANDONED_ctr) \
998 SymI_HasProto(GC_SEL_MINOR_ctr) \
999 SymI_HasProto(GC_SEL_MAJOR_ctr) \
1000 SymI_HasProto(GC_FAILED_PROMOTION_ctr) \
1001 SymI_HasProto(ALLOC_UP_THK_ctr) \
1002 SymI_HasProto(ALLOC_SE_THK_ctr) \
1003 SymI_HasProto(ALLOC_THK_adm) \
1004 SymI_HasProto(ALLOC_THK_gds) \
1005 SymI_HasProto(ALLOC_THK_slp) \
1006 SymI_HasProto(ALLOC_CON_ctr) \
1007 SymI_HasProto(ALLOC_CON_adm) \
1008 SymI_HasProto(ALLOC_CON_gds) \
1009 SymI_HasProto(ALLOC_CON_slp) \
1010 SymI_HasProto(ALLOC_TUP_ctr) \
1011 SymI_HasProto(ALLOC_TUP_adm) \
1012 SymI_HasProto(ALLOC_TUP_gds) \
1013 SymI_HasProto(ALLOC_TUP_slp) \
1014 SymI_HasProto(ALLOC_BH_ctr) \
1015 SymI_HasProto(ALLOC_BH_adm) \
1016 SymI_HasProto(ALLOC_BH_gds) \
1017 SymI_HasProto(ALLOC_BH_slp) \
1018 SymI_HasProto(ALLOC_PRIM_ctr) \
1019 SymI_HasProto(ALLOC_PRIM_adm) \
1020 SymI_HasProto(ALLOC_PRIM_gds) \
1021 SymI_HasProto(ALLOC_PRIM_slp) \
1022 SymI_HasProto(ALLOC_PAP_ctr) \
1023 SymI_HasProto(ALLOC_PAP_adm) \
1024 SymI_HasProto(ALLOC_PAP_gds) \
1025 SymI_HasProto(ALLOC_PAP_slp) \
1026 SymI_HasProto(ALLOC_TSO_ctr) \
1027 SymI_HasProto(ALLOC_TSO_adm) \
1028 SymI_HasProto(ALLOC_TSO_gds) \
1029 SymI_HasProto(ALLOC_TSO_slp) \
1030 SymI_HasProto(RET_NEW_ctr) \
1031 SymI_HasProto(RET_OLD_ctr) \
1032 SymI_HasProto(RET_UNBOXED_TUP_ctr) \
1033 SymI_HasProto(RET_SEMI_loads_avoided)
1034
1035
1036 // On most platforms, the garbage collector rewrites references
1037 // to small integer and char objects to a set of common, shared ones.
1038 //
1039 // We don't do this when compiling to Windows DLLs at the moment because
1040 // it doesn't support cross package data references well.
1041 //
1042 #if defined(COMPILING_WINDOWS_DLL)
1043 #define RTS_INTCHAR_SYMBOLS
1044 #else
1045 #define RTS_INTCHAR_SYMBOLS \
1046 SymI_HasProto(stg_CHARLIKE_closure) \
1047 SymI_HasProto(stg_INTLIKE_closure)
1048 #endif
1049
1050
1051 #define RTS_SYMBOLS \
1052 Maybe_Stable_Names \
1053 RTS_TICKY_SYMBOLS \
1054 SymI_HasProto(StgReturn) \
1055 SymI_HasProto(stg_gc_noregs) \
1056 SymI_HasProto(stg_ret_v_info) \
1057 SymI_HasProto(stg_ret_p_info) \
1058 SymI_HasProto(stg_ret_n_info) \
1059 SymI_HasProto(stg_ret_f_info) \
1060 SymI_HasProto(stg_ret_d_info) \
1061 SymI_HasProto(stg_ret_l_info) \
1062 SymI_HasProto(stg_gc_prim_p) \
1063 SymI_HasProto(stg_gc_prim_pp) \
1064 SymI_HasProto(stg_gc_prim_n) \
1065 SymI_HasProto(stg_enter_info) \
1066 SymI_HasProto(__stg_gc_enter_1) \
1067 SymI_HasProto(stg_gc_unpt_r1) \
1068 SymI_HasProto(stg_gc_unbx_r1) \
1069 SymI_HasProto(stg_gc_f1) \
1070 SymI_HasProto(stg_gc_d1) \
1071 SymI_HasProto(stg_gc_l1) \
1072 SymI_HasProto(stg_gc_pp) \
1073 SymI_HasProto(stg_gc_ppp) \
1074 SymI_HasProto(stg_gc_pppp) \
1075 SymI_HasProto(__stg_gc_fun) \
1076 SymI_HasProto(stg_gc_fun_info) \
1077 SymI_HasProto(stg_yield_noregs) \
1078 SymI_HasProto(stg_yield_to_interpreter) \
1079 SymI_HasProto(stg_block_noregs) \
1080 SymI_HasProto(stg_block_takemvar) \
1081 SymI_HasProto(stg_block_readmvar) \
1082 SymI_HasProto(stg_block_putmvar) \
1083 MAIN_CAP_SYM \
1084 SymI_HasProto(MallocFailHook) \
1085 SymI_HasProto(OnExitHook) \
1086 SymI_HasProto(OutOfHeapHook) \
1087 SymI_HasProto(StackOverflowHook) \
1088 SymI_HasProto(addDLL) \
1089 SymI_HasProto(__int_encodeDouble) \
1090 SymI_HasProto(__word_encodeDouble) \
1091 SymI_HasProto(__int_encodeFloat) \
1092 SymI_HasProto(__word_encodeFloat) \
1093 SymI_HasProto(stg_atomicallyzh) \
1094 SymI_HasProto(barf) \
1095 SymI_HasProto(debugBelch) \
1096 SymI_HasProto(errorBelch) \
1097 SymI_HasProto(sysErrorBelch) \
1098 SymI_HasProto(stg_getMaskingStatezh) \
1099 SymI_HasProto(stg_maskAsyncExceptionszh) \
1100 SymI_HasProto(stg_maskUninterruptiblezh) \
1101 SymI_HasProto(stg_catchzh) \
1102 SymI_HasProto(stg_catchRetryzh) \
1103 SymI_HasProto(stg_catchSTMzh) \
1104 SymI_HasProto(stg_checkzh) \
1105 SymI_HasProto(closure_flags) \
1106 SymI_HasProto(cmp_thread) \
1107 SymI_HasProto(createAdjustor) \
1108 SymI_HasProto(stg_decodeDoublezu2Intzh) \
1109 SymI_HasProto(stg_decodeFloatzuIntzh) \
1110 SymI_HasProto(defaultsHook) \
1111 SymI_HasProto(stg_delayzh) \
1112 SymI_HasProto(stg_deRefWeakzh) \
1113 SymI_HasProto(stg_deRefStablePtrzh) \
1114 SymI_HasProto(dirty_MUT_VAR) \
1115 SymI_HasProto(dirty_TVAR) \
1116 SymI_HasProto(stg_forkzh) \
1117 SymI_HasProto(stg_forkOnzh) \
1118 SymI_HasProto(forkProcess) \
1119 SymI_HasProto(forkOS_createThread) \
1120 SymI_HasProto(freeHaskellFunctionPtr) \
1121 SymI_HasProto(getOrSetGHCConcSignalSignalHandlerStore) \
1122 SymI_HasProto(getOrSetGHCConcWindowsPendingDelaysStore) \
1123 SymI_HasProto(getOrSetGHCConcWindowsIOManagerThreadStore) \
1124 SymI_HasProto(getOrSetGHCConcWindowsProddingStore) \
1125 SymI_HasProto(getOrSetSystemEventThreadEventManagerStore) \
1126 SymI_HasProto(getOrSetSystemEventThreadIOManagerThreadStore) \
1127 SymI_HasProto(getOrSetSystemTimerThreadEventManagerStore) \
1128 SymI_HasProto(getOrSetSystemTimerThreadIOManagerThreadStore) \
1129 SymI_HasProto(getOrSetLibHSghcFastStringTable) \
1130 SymI_HasProto(getGCStats) \
1131 SymI_HasProto(getGCStatsEnabled) \
1132 SymI_HasProto(genericRaise) \
1133 SymI_HasProto(getProgArgv) \
1134 SymI_HasProto(getFullProgArgv) \
1135 SymI_HasProto(getStablePtr) \
1136 SymI_HasProto(foreignExportStablePtr) \
1137 SymI_HasProto(hs_init) \
1138 SymI_HasProto(hs_exit) \
1139 SymI_HasProto(hs_set_argv) \
1140 SymI_HasProto(hs_add_root) \
1141 SymI_HasProto(hs_perform_gc) \
1142 SymI_HasProto(hs_lock_stable_tables) \
1143 SymI_HasProto(hs_unlock_stable_tables) \
1144 SymI_HasProto(hs_free_stable_ptr) \
1145 SymI_HasProto(hs_free_stable_ptr_unsafe) \
1146 SymI_HasProto(hs_free_fun_ptr) \
1147 SymI_HasProto(hs_hpc_rootModule) \
1148 SymI_HasProto(hs_hpc_module) \
1149 SymI_HasProto(initLinker) \
1150 SymI_HasProto(initLinker_) \
1151 SymI_HasProto(stg_unpackClosurezh) \
1152 SymI_HasProto(stg_getApStackValzh) \
1153 SymI_HasProto(stg_getSparkzh) \
1154 SymI_HasProto(stg_numSparkszh) \
1155 SymI_HasProto(stg_isCurrentThreadBoundzh) \
1156 SymI_HasProto(stg_isEmptyMVarzh) \
1157 SymI_HasProto(stg_killThreadzh) \
1158 SymI_HasProto(loadArchive) \
1159 SymI_HasProto(loadObj) \
1160 SymI_HasProto(insertSymbol) \
1161 SymI_HasProto(lookupSymbol) \
1162 SymI_HasProto(stg_makeStablePtrzh) \
1163 SymI_HasProto(stg_mkApUpd0zh) \
1164 SymI_HasProto(stg_myThreadIdzh) \
1165 SymI_HasProto(stg_labelThreadzh) \
1166 SymI_HasProto(stg_newArrayzh) \
1167 SymI_HasProto(stg_copyArrayzh) \
1168 SymI_HasProto(stg_copyMutableArrayzh) \
1169 SymI_HasProto(stg_copyArrayArrayzh) \
1170 SymI_HasProto(stg_copyMutableArrayArrayzh) \
1171 SymI_HasProto(stg_cloneArrayzh) \
1172 SymI_HasProto(stg_cloneMutableArrayzh) \
1173 SymI_HasProto(stg_freezzeArrayzh) \
1174 SymI_HasProto(stg_thawArrayzh) \
1175 SymI_HasProto(stg_newArrayArrayzh) \
1176 SymI_HasProto(stg_casArrayzh) \
1177 SymI_HasProto(stg_newSmallArrayzh) \
1178 SymI_HasProto(stg_unsafeThawSmallArrayzh) \
1179 SymI_HasProto(stg_cloneSmallArrayzh) \
1180 SymI_HasProto(stg_cloneSmallMutableArrayzh) \
1181 SymI_HasProto(stg_freezzeSmallArrayzh) \
1182 SymI_HasProto(stg_thawSmallArrayzh) \
1183 SymI_HasProto(stg_copySmallArrayzh) \
1184 SymI_HasProto(stg_copySmallMutableArrayzh) \
1185 SymI_HasProto(stg_casSmallArrayzh) \
1186 SymI_HasProto(stg_newBCOzh) \
1187 SymI_HasProto(stg_newByteArrayzh) \
1188 SymI_HasProto(stg_casIntArrayzh) \
1189 SymI_HasProto(stg_fetchAddIntArrayzh) \
1190 SymI_HasProto(stg_newMVarzh) \
1191 SymI_HasProto(stg_newMutVarzh) \
1192 SymI_HasProto(stg_newTVarzh) \
1193 SymI_HasProto(stg_noDuplicatezh) \
1194 SymI_HasProto(stg_atomicModifyMutVarzh) \
1195 SymI_HasProto(stg_casMutVarzh) \
1196 SymI_HasProto(stg_newPinnedByteArrayzh) \
1197 SymI_HasProto(stg_newAlignedPinnedByteArrayzh) \
1198 SymI_HasProto(newSpark) \
1199 SymI_HasProto(performGC) \
1200 SymI_HasProto(performMajorGC) \
1201 SymI_HasProto(prog_argc) \
1202 SymI_HasProto(prog_argv) \
1203 SymI_HasProto(stg_putMVarzh) \
1204 SymI_HasProto(stg_raisezh) \
1205 SymI_HasProto(stg_raiseIOzh) \
1206 SymI_HasProto(stg_readTVarzh) \
1207 SymI_HasProto(stg_readTVarIOzh) \
1208 SymI_HasProto(resumeThread) \
1209 SymI_HasProto(setNumCapabilities) \
1210 SymI_HasProto(getNumberOfProcessors) \
1211 SymI_HasProto(resolveObjs) \
1212 SymI_HasProto(stg_retryzh) \
1213 SymI_HasProto(rts_apply) \
1214 SymI_HasProto(rts_checkSchedStatus) \
1215 SymI_HasProto(rts_eval) \
1216 SymI_HasProto(rts_evalIO) \
1217 SymI_HasProto(rts_evalLazyIO) \
1218 SymI_HasProto(rts_evalStableIO) \
1219 SymI_HasProto(rts_eval_) \
1220 SymI_HasProto(rts_getBool) \
1221 SymI_HasProto(rts_getChar) \
1222 SymI_HasProto(rts_getDouble) \
1223 SymI_HasProto(rts_getFloat) \
1224 SymI_HasProto(rts_getInt) \
1225 SymI_HasProto(rts_getInt8) \
1226 SymI_HasProto(rts_getInt16) \
1227 SymI_HasProto(rts_getInt32) \
1228 SymI_HasProto(rts_getInt64) \
1229 SymI_HasProto(rts_getPtr) \
1230 SymI_HasProto(rts_getFunPtr) \
1231 SymI_HasProto(rts_getStablePtr) \
1232 SymI_HasProto(rts_getThreadId) \
1233 SymI_HasProto(rts_getWord) \
1234 SymI_HasProto(rts_getWord8) \
1235 SymI_HasProto(rts_getWord16) \
1236 SymI_HasProto(rts_getWord32) \
1237 SymI_HasProto(rts_getWord64) \
1238 SymI_HasProto(rts_lock) \
1239 SymI_HasProto(rts_mkBool) \
1240 SymI_HasProto(rts_mkChar) \
1241 SymI_HasProto(rts_mkDouble) \
1242 SymI_HasProto(rts_mkFloat) \
1243 SymI_HasProto(rts_mkInt) \
1244 SymI_HasProto(rts_mkInt8) \
1245 SymI_HasProto(rts_mkInt16) \
1246 SymI_HasProto(rts_mkInt32) \
1247 SymI_HasProto(rts_mkInt64) \
1248 SymI_HasProto(rts_mkPtr) \
1249 SymI_HasProto(rts_mkFunPtr) \
1250 SymI_HasProto(rts_mkStablePtr) \
1251 SymI_HasProto(rts_mkString) \
1252 SymI_HasProto(rts_mkWord) \
1253 SymI_HasProto(rts_mkWord8) \
1254 SymI_HasProto(rts_mkWord16) \
1255 SymI_HasProto(rts_mkWord32) \
1256 SymI_HasProto(rts_mkWord64) \
1257 SymI_HasProto(rts_unlock) \
1258 SymI_HasProto(rts_unsafeGetMyCapability) \
1259 SymI_HasProto(rtsSupportsBoundThreads) \
1260 SymI_HasProto(rts_isProfiled) \
1261 SymI_HasProto(rts_isDynamic) \
1262 SymI_HasProto(setProgArgv) \
1263 SymI_HasProto(startupHaskell) \
1264 SymI_HasProto(shutdownHaskell) \
1265 SymI_HasProto(shutdownHaskellAndExit) \
1266 SymI_HasProto(stable_name_table) \
1267 SymI_HasProto(stable_ptr_table) \
1268 SymI_HasProto(stackOverflow) \
1269 SymI_HasProto(stg_CAF_BLACKHOLE_info) \
1270 SymI_HasProto(stg_BLACKHOLE_info) \
1271 SymI_HasProto(__stg_EAGER_BLACKHOLE_info) \
1272 SymI_HasProto(stg_BLOCKING_QUEUE_CLEAN_info) \
1273 SymI_HasProto(stg_BLOCKING_QUEUE_DIRTY_info) \
1274 SymI_HasProto(startTimer) \
1275 SymI_HasProto(stg_MVAR_CLEAN_info) \
1276 SymI_HasProto(stg_MVAR_DIRTY_info) \
1277 SymI_HasProto(stg_TVAR_CLEAN_info) \
1278 SymI_HasProto(stg_TVAR_DIRTY_info) \
1279 SymI_HasProto(stg_IND_STATIC_info) \
1280 SymI_HasProto(stg_ARR_WORDS_info) \
1281 SymI_HasProto(stg_MUT_ARR_PTRS_DIRTY_info) \
1282 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN_info) \
1283 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN0_info) \
1284 SymI_HasProto(stg_SMALL_MUT_ARR_PTRS_DIRTY_info) \
1285 SymI_HasProto(stg_SMALL_MUT_ARR_PTRS_FROZEN_info) \
1286 SymI_HasProto(stg_SMALL_MUT_ARR_PTRS_FROZEN0_info) \
1287 SymI_HasProto(stg_MUT_VAR_CLEAN_info) \
1288 SymI_HasProto(stg_MUT_VAR_DIRTY_info) \
1289 SymI_HasProto(stg_WEAK_info) \
1290 SymI_HasProto(stg_ap_v_info) \
1291 SymI_HasProto(stg_ap_f_info) \
1292 SymI_HasProto(stg_ap_d_info) \
1293 SymI_HasProto(stg_ap_l_info) \
1294 SymI_HasProto(stg_ap_v16_info) \
1295 SymI_HasProto(stg_ap_v32_info) \
1296 SymI_HasProto(stg_ap_v64_info) \
1297 SymI_HasProto(stg_ap_n_info) \
1298 SymI_HasProto(stg_ap_p_info) \
1299 SymI_HasProto(stg_ap_pv_info) \
1300 SymI_HasProto(stg_ap_pp_info) \
1301 SymI_HasProto(stg_ap_ppv_info) \
1302 SymI_HasProto(stg_ap_ppp_info) \
1303 SymI_HasProto(stg_ap_pppv_info) \
1304 SymI_HasProto(stg_ap_pppp_info) \
1305 SymI_HasProto(stg_ap_ppppp_info) \
1306 SymI_HasProto(stg_ap_pppppp_info) \
1307 SymI_HasProto(stg_ap_0_fast) \
1308 SymI_HasProto(stg_ap_v_fast) \
1309 SymI_HasProto(stg_ap_f_fast) \
1310 SymI_HasProto(stg_ap_d_fast) \
1311 SymI_HasProto(stg_ap_l_fast) \
1312 SymI_HasProto(stg_ap_v16_fast) \
1313 SymI_HasProto(stg_ap_v32_fast) \
1314 SymI_HasProto(stg_ap_v64_fast) \
1315 SymI_HasProto(stg_ap_n_fast) \
1316 SymI_HasProto(stg_ap_p_fast) \
1317 SymI_HasProto(stg_ap_pv_fast) \
1318 SymI_HasProto(stg_ap_pp_fast) \
1319 SymI_HasProto(stg_ap_ppv_fast) \
1320 SymI_HasProto(stg_ap_ppp_fast) \
1321 SymI_HasProto(stg_ap_pppv_fast) \
1322 SymI_HasProto(stg_ap_pppp_fast) \
1323 SymI_HasProto(stg_ap_ppppp_fast) \
1324 SymI_HasProto(stg_ap_pppppp_fast) \
1325 SymI_HasProto(stg_ap_1_upd_info) \
1326 SymI_HasProto(stg_ap_2_upd_info) \
1327 SymI_HasProto(stg_ap_3_upd_info) \
1328 SymI_HasProto(stg_ap_4_upd_info) \
1329 SymI_HasProto(stg_ap_5_upd_info) \
1330 SymI_HasProto(stg_ap_6_upd_info) \
1331 SymI_HasProto(stg_ap_7_upd_info) \
1332 SymI_HasProto(stg_exit) \
1333 SymI_HasProto(stg_sel_0_upd_info) \
1334 SymI_HasProto(stg_sel_1_upd_info) \
1335 SymI_HasProto(stg_sel_2_upd_info) \
1336 SymI_HasProto(stg_sel_3_upd_info) \
1337 SymI_HasProto(stg_sel_4_upd_info) \
1338 SymI_HasProto(stg_sel_5_upd_info) \
1339 SymI_HasProto(stg_sel_6_upd_info) \
1340 SymI_HasProto(stg_sel_7_upd_info) \
1341 SymI_HasProto(stg_sel_8_upd_info) \
1342 SymI_HasProto(stg_sel_9_upd_info) \
1343 SymI_HasProto(stg_sel_10_upd_info) \
1344 SymI_HasProto(stg_sel_11_upd_info) \
1345 SymI_HasProto(stg_sel_12_upd_info) \
1346 SymI_HasProto(stg_sel_13_upd_info) \
1347 SymI_HasProto(stg_sel_14_upd_info) \
1348 SymI_HasProto(stg_sel_15_upd_info) \
1349 SymI_HasProto(stg_sel_0_noupd_info) \
1350 SymI_HasProto(stg_sel_1_noupd_info) \
1351 SymI_HasProto(stg_sel_2_noupd_info) \
1352 SymI_HasProto(stg_sel_3_noupd_info) \
1353 SymI_HasProto(stg_sel_4_noupd_info) \
1354 SymI_HasProto(stg_sel_5_noupd_info) \
1355 SymI_HasProto(stg_sel_6_noupd_info) \
1356 SymI_HasProto(stg_sel_7_noupd_info) \
1357 SymI_HasProto(stg_sel_8_noupd_info) \
1358 SymI_HasProto(stg_sel_9_noupd_info) \
1359 SymI_HasProto(stg_sel_10_noupd_info) \
1360 SymI_HasProto(stg_sel_11_noupd_info) \
1361 SymI_HasProto(stg_sel_12_noupd_info) \
1362 SymI_HasProto(stg_sel_13_noupd_info) \
1363 SymI_HasProto(stg_sel_14_noupd_info) \
1364 SymI_HasProto(stg_sel_15_noupd_info) \
1365 SymI_HasProto(stg_upd_frame_info) \
1366 SymI_HasProto(stg_bh_upd_frame_info) \
1367 SymI_HasProto(suspendThread) \
1368 SymI_HasProto(stg_takeMVarzh) \
1369 SymI_HasProto(stg_readMVarzh) \
1370 SymI_HasProto(stg_threadStatuszh) \
1371 SymI_HasProto(stg_tryPutMVarzh) \
1372 SymI_HasProto(stg_tryTakeMVarzh) \
1373 SymI_HasProto(stg_tryReadMVarzh) \
1374 SymI_HasProto(stg_unmaskAsyncExceptionszh) \
1375 SymI_HasProto(unloadObj) \
1376 SymI_HasProto(stg_unsafeThawArrayzh) \
1377 SymI_HasProto(stg_waitReadzh) \
1378 SymI_HasProto(stg_waitWritezh) \
1379 SymI_HasProto(stg_writeTVarzh) \
1380 SymI_HasProto(stg_yieldzh) \
1381 SymI_NeedsProto(stg_interp_constr_entry) \
1382 SymI_HasProto(stg_arg_bitmaps) \
1383 SymI_HasProto(large_alloc_lim) \
1384 SymI_HasProto(g0) \
1385 SymI_HasProto(allocate) \
1386 SymI_HasProto(allocateExec) \
1387 SymI_HasProto(flushExec) \
1388 SymI_HasProto(freeExec) \
1389 SymI_HasProto(getAllocations) \
1390 SymI_HasProto(revertCAFs) \
1391 SymI_HasProto(RtsFlags) \
1392 SymI_NeedsProto(rts_breakpoint_io_action) \
1393 SymI_NeedsProto(rts_stop_next_breakpoint) \
1394 SymI_NeedsProto(rts_stop_on_exception) \
1395 SymI_HasProto(stopTimer) \
1396 SymI_HasProto(n_capabilities) \
1397 SymI_HasProto(enabled_capabilities) \
1398 SymI_HasProto(stg_traceCcszh) \
1399 SymI_HasProto(stg_traceEventzh) \
1400 SymI_HasProto(stg_traceMarkerzh) \
1401 SymI_HasProto(getMonotonicNSec) \
1402 SymI_HasProto(lockFile) \
1403 SymI_HasProto(unlockFile) \
1404 SymI_HasProto(startProfTimer) \
1405 SymI_HasProto(stopProfTimer) \
1406 SymI_HasProto(atomic_inc) \
1407 SymI_HasProto(atomic_dec) \
1408 RTS_USER_SIGNALS_SYMBOLS \
1409 RTS_INTCHAR_SYMBOLS
1410
1411
1412 // 64-bit support functions in libgcc.a
1413 #if defined(__GNUC__) && SIZEOF_VOID_P <= 4 && !defined(_ABIN32)
1414 #define RTS_LIBGCC_SYMBOLS \
1415 SymI_NeedsProto(__divdi3) \
1416 SymI_NeedsProto(__udivdi3) \
1417 SymI_NeedsProto(__moddi3) \
1418 SymI_NeedsProto(__umoddi3) \
1419 SymI_NeedsProto(__muldi3) \
1420 SymI_NeedsProto(__ashldi3) \
1421 SymI_NeedsProto(__ashrdi3) \
1422 SymI_NeedsProto(__lshrdi3) \
1423 SymI_NeedsProto(__fixunsdfdi)
1424 #else
1425 #define RTS_LIBGCC_SYMBOLS
1426 #endif
1427
1428 #if defined(darwin_HOST_OS) && defined(powerpc_HOST_ARCH)
1429 // Symbols that don't have a leading underscore
1430 // on Mac OS X. They have to receive special treatment,
1431 // see machoInitSymbolsWithoutUnderscore()
1432 #define RTS_MACHO_NOUNDERLINE_SYMBOLS \
1433 SymI_NeedsProto(saveFP) \
1434 SymI_NeedsProto(restFP)
1435 #endif
1436
1437 /* entirely bogus claims about types of these symbols */
1438 #define SymI_NeedsProto(vvv) extern void vvv(void);
1439 #if defined(COMPILING_WINDOWS_DLL)
1440 #define SymE_HasProto(vvv) SymE_HasProto(vvv);
1441 # if defined(x86_64_HOST_ARCH)
1442 # define SymE_NeedsProto(vvv) extern void __imp_ ## vvv (void);
1443 # else
1444 # define SymE_NeedsProto(vvv) extern void _imp__ ## vvv (void);
1445 # endif
1446 #else
1447 #define SymE_NeedsProto(vvv) SymI_NeedsProto(vvv);
1448 #define SymE_HasProto(vvv) SymI_HasProto(vvv)
1449 #endif
1450 #define SymI_HasProto(vvv) /**/
1451 #define SymI_HasProto_redirect(vvv,xxx) /**/
1452 RTS_SYMBOLS
1453 RTS_RET_SYMBOLS
1454 RTS_POSIX_ONLY_SYMBOLS
1455 RTS_MINGW_ONLY_SYMBOLS
1456 RTS_CYGWIN_ONLY_SYMBOLS
1457 RTS_DARWIN_ONLY_SYMBOLS
1458 RTS_LIBGCC_SYMBOLS
1459 RTS_LIBFFI_SYMBOLS
1460 #undef SymI_NeedsProto
1461 #undef SymI_HasProto
1462 #undef SymI_HasProto_redirect
1463 #undef SymE_HasProto
1464 #undef SymE_NeedsProto
1465
1466 #ifdef LEADING_UNDERSCORE
1467 #define MAYBE_LEADING_UNDERSCORE_STR(s) ("_" s)
1468 #else
1469 #define MAYBE_LEADING_UNDERSCORE_STR(s) (s)
1470 #endif
1471
1472 #define SymI_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1473 (void*)(&(vvv)) },
1474 #define SymE_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1475 (void*)DLL_IMPORT_DATA_REF(vvv) },
1476
1477 #define SymI_NeedsProto(vvv) SymI_HasProto(vvv)
1478 #define SymE_NeedsProto(vvv) SymE_HasProto(vvv)
1479
1480 // SymI_HasProto_redirect allows us to redirect references to one symbol to
1481 // another symbol. See newCAF/newDynCAF for an example.
1482 #define SymI_HasProto_redirect(vvv,xxx) \
1483 { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1484 (void*)(&(xxx)) },
1485
1486 static RtsSymbolVal rtsSyms[] = {
1487 RTS_SYMBOLS
1488 RTS_RET_SYMBOLS
1489 RTS_POSIX_ONLY_SYMBOLS
1490 RTS_MINGW_ONLY_SYMBOLS
1491 RTS_CYGWIN_ONLY_SYMBOLS
1492 RTS_DARWIN_ONLY_SYMBOLS
1493 RTS_LIBGCC_SYMBOLS
1494 RTS_LIBFFI_SYMBOLS
1495 #if defined(darwin_HOST_OS) && defined(i386_HOST_ARCH)
1496 // dyld stub code contains references to this,
1497 // but it should never be called because we treat
1498 // lazy pointers as nonlazy.
1499 { "dyld_stub_binding_helper", (void*)0xDEADBEEF },
1500 #endif
1501 { 0, 0 } /* sentinel */
1502 };
1503
1504
1505 /* -----------------------------------------------------------------------------
1506 * Insert symbols into hash tables, checking for duplicates.
1507 */
1508
1509 static void ghciInsertSymbolTable(
1510 pathchar* obj_name,
1511 HashTable *table,
1512 char* key,
1513 void *data,
1514 HsBool weak,
1515 ObjectCode *owner)
1516 {
1517 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1518 if (!pinfo) /* new entry */
1519 {
1520 pinfo = stgMallocBytes(sizeof (*pinfo), "ghciInsertToSymbolTable");
1521 pinfo->value = data;
1522 pinfo->owner = owner;
1523 pinfo->weak = weak;
1524 insertStrHashTable(table, key, pinfo);
1525 return;
1526 } else if ((!pinfo->weak || pinfo->value) && weak) {
1527 return; /* duplicate weak symbol, throw it away */
1528 } else if (pinfo->weak) /* weak symbol is in the table */
1529 {
1530 /* override the weak definition with the non-weak one */
1531 pinfo->value = data;
1532 pinfo->owner = owner;
1533 pinfo->weak = HS_BOOL_FALSE;
1534 return;
1535 }
1536 debugBelch(
1537 "\n\n"
1538 "GHCi runtime linker: fatal error: I found a duplicate definition for symbol\n"
1539 " %s\n"
1540 "whilst processing object file\n"
1541 " %" PATH_FMT "\n"
1542 "This could be caused by:\n"
1543 " * Loading two different object files which export the same symbol\n"
1544 " * Specifying the same object file twice on the GHCi command line\n"
1545 " * An incorrect `package.conf' entry, causing some object to be\n"
1546 " loaded twice.\n"
1547 "GHCi cannot safely continue in this situation. Exiting now. Sorry.\n"
1548 "\n",
1549 (char*)key,
1550 obj_name
1551 );
1552 stg_exit(1);
1553 }
1554
1555 static HsBool ghciLookupSymbolTable(HashTable *table,
1556 const char *key, void **result)
1557 {
1558 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1559 if (!pinfo) {
1560 *result = NULL;
1561 return HS_BOOL_FALSE;
1562 }
1563 if (pinfo->weak)
1564 IF_DEBUG(linker, debugBelch("lookup: promoting %s\n", key));
1565 /* Once it's looked up, it can no longer be overridden */
1566 pinfo->weak = HS_BOOL_FALSE;
1567
1568 *result = pinfo->value;
1569 return HS_BOOL_TRUE;
1570 }
1571
1572 static void ghciRemoveSymbolTable(HashTable *table, const char *key,
1573 ObjectCode *owner)
1574 {
1575 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1576 if (!pinfo || owner != pinfo->owner) return;
1577 removeStrHashTable(table, key, NULL);
1578 stgFree(pinfo);
1579 }
1580 /* -----------------------------------------------------------------------------
1581 * initialize the object linker
1582 */
1583
1584
1585 static int linker_init_done = 0 ;
1586
1587 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1588 static void *dl_prog_handle;
1589 static regex_t re_invalid;
1590 static regex_t re_realso;
1591 #ifdef THREADED_RTS
1592 static Mutex dl_mutex; // mutex to protect dlopen/dlerror critical section
1593 #endif
1594 #endif
1595
1596 void initLinker (void)
1597 {
1598 // default to retaining CAFs for backwards compatibility. Most
1599 // users will want initLinker_(0): otherwise unloadObj() will not
1600 // be able to unload object files when they contain CAFs.
1601 initLinker_(1);
1602 }
1603
1604 void
1605 initLinker_ (int retain_cafs)
1606 {
1607 RtsSymbolVal *sym;
1608 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1609 int compileResult;
1610 #endif
1611
1612 IF_DEBUG(linker, debugBelch("initLinker: start\n"));
1613
1614 /* Make initLinker idempotent, so we can call it
1615 before every relevant operation; that means we
1616 don't need to initialise the linker separately */
1617 if (linker_init_done == 1) {
1618 IF_DEBUG(linker, debugBelch("initLinker: idempotent return\n"));
1619 return;
1620 } else {
1621 linker_init_done = 1;
1622 }
1623
1624 objects = NULL;
1625 unloaded_objects = NULL;
1626
1627 #if defined(THREADED_RTS) && (defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO))
1628 initMutex(&dl_mutex);
1629 #endif
1630 symhash = allocStrHashTable();
1631
1632 /* populate the symbol table with stuff from the RTS */
1633 for (sym = rtsSyms; sym->lbl != NULL; sym++) {
1634 ghciInsertSymbolTable(WSTR("(GHCi built-in symbols)"),
1635 symhash, sym->lbl, sym->addr, HS_BOOL_FALSE, NULL);
1636 IF_DEBUG(linker, debugBelch("initLinker: inserting rts symbol %s, %p\n", sym->lbl, sym->addr));
1637 }
1638 # if defined(OBJFORMAT_MACHO) && defined(powerpc_HOST_ARCH)
1639 machoInitSymbolsWithoutUnderscore();
1640 # endif
1641 /* GCC defines a special symbol __dso_handle which is resolved to NULL if
1642 referenced from a statically linked module. We need to mimic this, but
1643 we cannot use NULL because we use it to mean nonexistent symbols. So we
1644 use an arbitrary (hopefully unique) address here.
1645 */
1646 ghciInsertSymbolTable(WSTR("(GHCi special symbols)"),
1647 symhash, "__dso_handle", (void *)0x12345687, HS_BOOL_FALSE, NULL);
1648
1649 // Redurect newCAF to newDynCAF if retain_cafs is true.
1650 ghciInsertSymbolTable(WSTR("(GHCi built-in symbols)"), symhash,
1651 MAYBE_LEADING_UNDERSCORE_STR("newCAF"),
1652 retain_cafs ? newDynCAF : newCAF,
1653 HS_BOOL_FALSE, NULL);
1654
1655 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1656 # if defined(RTLD_DEFAULT)
1657 dl_prog_handle = RTLD_DEFAULT;
1658 # else
1659 dl_prog_handle = dlopen(NULL, RTLD_LAZY);
1660 # endif /* RTLD_DEFAULT */
1661
1662 compileResult = regcomp(&re_invalid,
1663 "(([^ \t()])+\\.so([^ \t:()])*):([ \t])*(invalid ELF header|file too short)",
1664 REG_EXTENDED);
1665 if (compileResult != 0) {
1666 barf("Compiling re_invalid failed");
1667 }
1668 compileResult = regcomp(&re_realso,
1669 "(GROUP|INPUT) *\\( *([^ )]+)",
1670 REG_EXTENDED);
1671 if (compileResult != 0) {
1672 barf("Compiling re_realso failed");
1673 }
1674 # endif
1675
1676 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1677 if (RtsFlags.MiscFlags.linkerMemBase != 0) {
1678 // User-override for mmap_32bit_base
1679 mmap_32bit_base = (void*)RtsFlags.MiscFlags.linkerMemBase;
1680 }
1681 #endif
1682
1683 #if defined(mingw32_HOST_OS)
1684 /*
1685 * These two libraries cause problems when added to the static link,
1686 * but are necessary for resolving symbols in GHCi, hence we load
1687 * them manually here.
1688 */
1689 addDLL(WSTR("msvcrt"));
1690 addDLL(WSTR("kernel32"));
1691 #endif
1692
1693 IF_DEBUG(linker, debugBelch("initLinker: done\n"));
1694 return;
1695 }
1696
1697 void
1698 exitLinker( void ) {
1699 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1700 if (linker_init_done == 1) {
1701 regfree(&re_invalid);
1702 regfree(&re_realso);
1703 #ifdef THREADED_RTS
1704 closeMutex(&dl_mutex);
1705 #endif
1706 }
1707 #endif
1708 }
1709
1710 /* -----------------------------------------------------------------------------
1711 * Loading DLL or .so dynamic libraries
1712 * -----------------------------------------------------------------------------
1713 *
1714 * Add a DLL from which symbols may be found. In the ELF case, just
1715 * do RTLD_GLOBAL-style add, so no further messing around needs to
1716 * happen in order that symbols in the loaded .so are findable --
1717 * lookupSymbol() will subsequently see them by dlsym on the program's
1718 * dl-handle. Returns NULL if success, otherwise ptr to an err msg.
1719 *
1720 * In the PEi386 case, open the DLLs and put handles to them in a
1721 * linked list. When looking for a symbol, try all handles in the
1722 * list. This means that we need to load even DLLs that are guaranteed
1723 * to be in the ghc.exe image already, just so we can get a handle
1724 * to give to loadSymbol, so that we can find the symbols. For such
1725 * libraries, the LoadLibrary call should be a no-op except for returning
1726 * the handle.
1727 *
1728 */
1729
1730 #if defined(OBJFORMAT_PEi386)
1731 /* A record for storing handles into DLLs. */
1732
1733 typedef
1734 struct _OpenedDLL {
1735 pathchar* name;
1736 struct _OpenedDLL* next;
1737 HINSTANCE instance;
1738 }
1739 OpenedDLL;
1740
1741 /* A list thereof. */
1742 static OpenedDLL* opened_dlls = NULL;
1743
1744 /* A record for storing indirectly linked functions from DLLs. */
1745 typedef
1746 struct _IndirectAddr {
1747 void* addr;
1748 struct _IndirectAddr* next;
1749 }
1750 IndirectAddr;
1751
1752 /* A list thereof. */
1753 static IndirectAddr* indirects = NULL;
1754
1755 #endif
1756
1757 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1758
1759 /* Suppose in ghci we load a temporary SO for a module containing
1760 f = 1
1761 and then modify the module, recompile, and load another temporary
1762 SO with
1763 f = 2
1764 Then as we don't unload the first SO, dlsym will find the
1765 f = 1
1766 symbol whereas we want the
1767 f = 2
1768 symbol. We therefore need to keep our own SO handle list, and
1769 try SOs in the right order. */
1770
1771 typedef
1772 struct _OpenedSO {
1773 struct _OpenedSO* next;
1774 void *handle;
1775 }
1776 OpenedSO;
1777
1778 /* A list thereof. */
1779 static OpenedSO* openedSOs = NULL;
1780
1781 static const char *
1782 internal_dlopen(const char *dll_name)
1783 {
1784 OpenedSO* o_so;
1785 void *hdl;
1786 const char *errmsg;
1787 char *errmsg_copy;
1788
1789 // omitted: RTLD_NOW
1790 // see http://www.haskell.org/pipermail/cvs-ghc/2007-September/038570.html
1791 IF_DEBUG(linker,
1792 debugBelch("internal_dlopen: dll_name = '%s'\n", dll_name));
1793
1794 //-------------- Begin critical section ------------------
1795 // This critical section is necessary because dlerror() is not
1796 // required to be reentrant (see POSIX -- IEEE Std 1003.1-2008)
1797 // Also, the error message returned must be copied to preserve it
1798 // (see POSIX also)
1799
1800 ACQUIRE_LOCK(&dl_mutex);
1801 hdl = dlopen(dll_name, RTLD_LAZY | RTLD_GLOBAL);
1802
1803 errmsg = NULL;
1804 if (hdl == NULL) {
1805 /* dlopen failed; return a ptr to the error msg. */
1806 errmsg = dlerror();
1807 if (errmsg == NULL) errmsg = "addDLL: unknown error";
1808 errmsg_copy = stgMallocBytes(strlen(errmsg)+1, "addDLL");
1809 strcpy(errmsg_copy, errmsg);
1810 errmsg = errmsg_copy;
1811 }
1812 o_so = stgMallocBytes(sizeof(OpenedSO), "addDLL");
1813 o_so->handle = hdl;
1814 o_so->next = openedSOs;
1815 openedSOs = o_so;
1816
1817 RELEASE_LOCK(&dl_mutex);
1818 //--------------- End critical section -------------------
1819
1820 return errmsg;
1821 }
1822
1823 static void *
1824 internal_dlsym(void *hdl, const char *symbol) {
1825 OpenedSO* o_so;
1826 void *v;
1827
1828 // We acquire dl_mutex as concurrent dl* calls may alter dlerror
1829 ACQUIRE_LOCK(&dl_mutex);
1830 dlerror();
1831 for (o_so = openedSOs; o_so != NULL; o_so = o_so->next) {
1832 v = dlsym(o_so->handle, symbol);
1833 if (dlerror() == NULL) {
1834 RELEASE_LOCK(&dl_mutex);
1835 return v;
1836 }
1837 }
1838 v = dlsym(hdl, symbol);
1839 RELEASE_LOCK(&dl_mutex);
1840 return v;
1841 }
1842 # endif
1843
1844 const char *
1845 addDLL( pathchar *dll_name )
1846 {
1847 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1848 /* ------------------- ELF DLL loader ------------------- */
1849
1850 #define NMATCH 5
1851 regmatch_t match[NMATCH];
1852 const char *errmsg;
1853 FILE* fp;
1854 size_t match_length;
1855 #define MAXLINE 1000
1856 char line[MAXLINE];
1857 int result;
1858
1859 initLinker();
1860
1861 IF_DEBUG(linker, debugBelch("addDLL: dll_name = '%s'\n", dll_name));
1862 errmsg = internal_dlopen(dll_name);
1863
1864 if (errmsg == NULL) {
1865 return NULL;
1866 }
1867
1868 // GHC Trac ticket #2615
1869 // On some systems (e.g., Gentoo Linux) dynamic files (e.g. libc.so)
1870 // contain linker scripts rather than ELF-format object code. This
1871 // code handles the situation by recognizing the real object code
1872 // file name given in the linker script.
1873 //
1874 // If an "invalid ELF header" error occurs, it is assumed that the
1875 // .so file contains a linker script instead of ELF object code.
1876 // In this case, the code looks for the GROUP ( ... ) linker
1877 // directive. If one is found, the first file name inside the
1878 // parentheses is treated as the name of a dynamic library and the
1879 // code attempts to dlopen that file. If this is also unsuccessful,
1880 // an error message is returned.
1881
1882 // see if the error message is due to an invalid ELF header
1883 IF_DEBUG(linker, debugBelch("errmsg = '%s'\n", errmsg));
1884 result = regexec(&re_invalid, errmsg, (size_t) NMATCH, match, 0);
1885 IF_DEBUG(linker, debugBelch("result = %i\n", result));
1886 if (result == 0) {
1887 // success -- try to read the named file as a linker script
1888 match_length = (size_t) stg_min((match[1].rm_eo - match[1].rm_so),
1889 MAXLINE-1);
1890 strncpy(line, (errmsg+(match[1].rm_so)),match_length);
1891 line[match_length] = '\0'; // make sure string is null-terminated
1892 IF_DEBUG(linker, debugBelch ("file name = '%s'\n", line));
1893 if ((fp = fopen(line, "r")) == NULL) {
1894 return errmsg; // return original error if open fails
1895 }
1896 // try to find a GROUP or INPUT ( ... ) command
1897 while (fgets(line, MAXLINE, fp) != NULL) {
1898 IF_DEBUG(linker, debugBelch("input line = %s", line));
1899 if (regexec(&re_realso, line, (size_t) NMATCH, match, 0) == 0) {
1900 // success -- try to dlopen the first named file
1901 IF_DEBUG(linker, debugBelch("match%s\n",""));
1902 line[match[2].rm_eo] = '\0';
1903 errmsg = internal_dlopen(line+match[2].rm_so);
1904 break;
1905 }
1906 // if control reaches here, no GROUP or INPUT ( ... ) directive
1907 // was found and the original error message is returned to the
1908 // caller
1909 }
1910 fclose(fp);
1911 }
1912 return errmsg;
1913
1914 # elif defined(OBJFORMAT_PEi386)
1915 /* ------------------- Win32 DLL loader ------------------- */
1916
1917 pathchar* buf;
1918 OpenedDLL* o_dll;
1919 HINSTANCE instance;
1920
1921 initLinker();
1922
1923 /* debugBelch("\naddDLL; dll_name = `%s'\n", dll_name); */
1924
1925 /* See if we've already got it, and ignore if so. */
1926 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
1927 if (0 == pathcmp(o_dll->name, dll_name))
1928 return NULL;
1929 }
1930
1931 /* The file name has no suffix (yet) so that we can try
1932 both foo.dll and foo.drv
1933
1934 The documentation for LoadLibrary says:
1935 If no file name extension is specified in the lpFileName
1936 parameter, the default library extension .dll is
1937 appended. However, the file name string can include a trailing
1938 point character (.) to indicate that the module name has no
1939 extension. */
1940
1941 buf = stgMallocBytes((pathlen(dll_name) + 10) * sizeof(wchar_t), "addDLL");
1942 swprintf(buf, L"%s.DLL", dll_name);
1943 instance = LoadLibraryW(buf);
1944 if (instance == NULL) {
1945 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1946 // KAA: allow loading of drivers (like winspool.drv)
1947 swprintf(buf, L"%s.DRV", dll_name);
1948 instance = LoadLibraryW(buf);
1949 if (instance == NULL) {
1950 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1951 // #1883: allow loading of unix-style libfoo.dll DLLs
1952 swprintf(buf, L"lib%s.DLL", dll_name);
1953 instance = LoadLibraryW(buf);
1954 if (instance == NULL) {
1955 goto error;
1956 }
1957 }
1958 }
1959 stgFree(buf);
1960
1961 /* Add this DLL to the list of DLLs in which to search for symbols. */
1962 o_dll = stgMallocBytes( sizeof(OpenedDLL), "addDLL" );
1963 o_dll->name = pathdup(dll_name);
1964 o_dll->instance = instance;
1965 o_dll->next = opened_dlls;
1966 opened_dlls = o_dll;
1967
1968 return NULL;
1969
1970 error:
1971 stgFree(buf);
1972 sysErrorBelch("%" PATH_FMT, dll_name);
1973
1974 /* LoadLibrary failed; return a ptr to the error msg. */
1975 return "addDLL: could not load DLL";
1976
1977 # else
1978 barf("addDLL: not implemented on this platform");
1979 # endif
1980 }
1981
1982 /* -----------------------------------------------------------------------------
1983 * insert a symbol in the hash table
1984 */
1985 void
1986 insertSymbol(pathchar* obj_name, char* key, void* data)
1987 {
1988 ghciInsertSymbolTable(obj_name, symhash, key, data, HS_BOOL_FALSE, NULL);
1989 }
1990
1991 /* -----------------------------------------------------------------------------
1992 * lookup a symbol in the hash table
1993 */
1994 void *
1995 lookupSymbol( char *lbl )
1996 {
1997 void *val;
1998 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s\n", lbl));
1999 initLinker() ;
2000 ASSERT(symhash != NULL);
2001
2002 if (!ghciLookupSymbolTable(symhash, lbl, &val)) {
2003 IF_DEBUG(linker, debugBelch("lookupSymbol: symbol not found\n"));
2004 # if defined(OBJFORMAT_ELF)
2005 return internal_dlsym(dl_prog_handle, lbl);
2006 # elif defined(OBJFORMAT_MACHO)
2007 # if HAVE_DLFCN_H
2008 /* On OS X 10.3 and later, we use dlsym instead of the old legacy
2009 interface.
2010
2011 HACK: On OS X, all symbols are prefixed with an underscore.
2012 However, dlsym wants us to omit the leading underscore from the
2013 symbol name -- the dlsym routine puts it back on before searching
2014 for the symbol. For now, we simply strip it off here (and ONLY
2015 here).
2016 */
2017 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s with dlsym\n", lbl));
2018 ASSERT(lbl[0] == '_');
2019 return internal_dlsym(dl_prog_handle, lbl + 1);
2020 # else
2021 if (NSIsSymbolNameDefined(lbl)) {
2022 NSSymbol symbol = NSLookupAndBindSymbol(lbl);
2023 return NSAddressOfSymbol(symbol);
2024 } else {
2025 return NULL;
2026 }
2027 # endif /* HAVE_DLFCN_H */
2028 # elif defined(OBJFORMAT_PEi386)
2029 void* sym;
2030
2031 sym = lookupSymbolInDLLs((unsigned char*)lbl);
2032 if (sym != NULL) { return sym; };
2033
2034 // Also try looking up the symbol without the @N suffix. Some
2035 // DLLs have the suffixes on their symbols, some don't.
2036 zapTrailingAtSign ( (unsigned char*)lbl );
2037 sym = lookupSymbolInDLLs((unsigned char*)lbl);
2038 if (sym != NULL) { return sym; };
2039 return NULL;
2040
2041 # else
2042 ASSERT(2+2 == 5);
2043 return NULL;
2044 # endif
2045 } else {
2046 IF_DEBUG(linker, debugBelch("lookupSymbol: value of %s is %p\n", lbl, val));
2047 return val;
2048 }
2049 }
2050
2051 /* -----------------------------------------------------------------------------
2052 Create a StablePtr for a foreign export. This is normally called by
2053 a C function with __attribute__((constructor)), which is generated
2054 by GHC and linked into the module.
2055
2056 If the object code is being loaded dynamically, then we remember
2057 which StablePtrs were allocated by the constructors and free them
2058 again in unloadObj().
2059 -------------------------------------------------------------------------- */
2060
2061 static ObjectCode *loading_obj = NULL;
2062
2063 StgStablePtr foreignExportStablePtr (StgPtr p)
2064 {
2065 ForeignExportStablePtr *fe_sptr;
2066 StgStablePtr *sptr;
2067
2068 sptr = getStablePtr(p);
2069
2070 if (loading_obj != NULL) {
2071 fe_sptr = stgMallocBytes(sizeof(ForeignExportStablePtr),
2072 "foreignExportStablePtr");
2073 fe_sptr->stable_ptr = sptr;
2074 fe_sptr->next = loading_obj->stable_ptrs;
2075 loading_obj->stable_ptrs = fe_sptr;
2076 }
2077
2078 return sptr;
2079 }
2080
2081
2082 /* -----------------------------------------------------------------------------
2083 * Debugging aid: look in GHCi's object symbol tables for symbols
2084 * within DELTA bytes of the specified address, and show their names.
2085 */
2086 #ifdef DEBUG
2087 void ghci_enquire ( char* addr );
2088
2089 void ghci_enquire ( char* addr )
2090 {
2091 int i;
2092 char* sym;
2093 char* a;
2094 const int DELTA = 64;
2095 ObjectCode* oc;
2096
2097 initLinker();
2098
2099 for (oc = objects; oc; oc = oc->next) {
2100 for (i = 0; i < oc->n_symbols; i++) {
2101 sym = oc->symbols[i];
2102 if (sym == NULL) continue;
2103 a = NULL;
2104 if (a == NULL) {
2105 ghciLookupSymbolTable(symhash, sym, (void **)&a);
2106 }
2107 if (a == NULL) {
2108 // debugBelch("ghci_enquire: can't find %s\n", sym);
2109 }
2110 else if (addr-DELTA <= a && a <= addr+DELTA) {
2111 debugBelch("%p + %3d == `%s'\n", addr, (int)(a - addr), sym);
2112 }
2113 }
2114 }
2115 }
2116 #endif
2117
2118 #ifdef USE_MMAP
2119 #define ROUND_UP(x,size) ((x + size - 1) & ~(size - 1))
2120
2121 static void *
2122 mmapForLinker (size_t bytes, nat flags, int fd)
2123 {
2124 void *map_addr = NULL;
2125 void *result;
2126 int pagesize, size;
2127 static nat fixed = 0;
2128
2129 IF_DEBUG(linker, debugBelch("mmapForLinker: start\n"));
2130 pagesize = getpagesize();
2131 size = ROUND_UP(bytes, pagesize);
2132
2133 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2134 mmap_again:
2135
2136 if (mmap_32bit_base != 0) {
2137 map_addr = mmap_32bit_base;
2138 }
2139 #endif
2140
2141 IF_DEBUG(linker, debugBelch("mmapForLinker: \tprotection %#0x\n", PROT_EXEC | PROT_READ | PROT_WRITE));
2142 IF_DEBUG(linker, debugBelch("mmapForLinker: \tflags %#0x\n", MAP_PRIVATE | TRY_MAP_32BIT | fixed | flags));
2143 result = mmap(map_addr, size, PROT_EXEC|PROT_READ|PROT_WRITE,
2144 MAP_PRIVATE|TRY_MAP_32BIT|fixed|flags, fd, 0);
2145
2146 if (result == MAP_FAILED) {
2147 sysErrorBelch("mmap %" FMT_Word " bytes at %p",(W_)size,map_addr);
2148 errorBelch("Try specifying an address with +RTS -xm<addr> -RTS");
2149 stg_exit(EXIT_FAILURE);
2150 }
2151
2152 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2153 if (mmap_32bit_base != 0) {
2154 if (result == map_addr) {
2155 mmap_32bit_base = (StgWord8*)map_addr + size;
2156 } else {
2157 if ((W_)result > 0x80000000) {
2158 // oops, we were given memory over 2Gb
2159 #if defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS)
2160 // Some platforms require MAP_FIXED. This is normally
2161 // a bad idea, because MAP_FIXED will overwrite
2162 // existing mappings.
2163 munmap(result,size);
2164 fixed = MAP_FIXED;
2165 goto mmap_again;
2166 #else
2167 barf("loadObj: failed to mmap() memory below 2Gb; asked for %lu bytes at %p. Try specifying an address with +RTS -xm<addr> -RTS", size, map_addr, result);
2168 #endif
2169 } else {
2170 // hmm, we were given memory somewhere else, but it's
2171 // still under 2Gb so we can use it. Next time, ask
2172 // for memory right after the place we just got some
2173 mmap_32bit_base = (StgWord8*)result + size;
2174 }
2175 }
2176 } else {
2177 if ((W_)result > 0x80000000) {
2178 // oops, we were given memory over 2Gb
2179 // ... try allocating memory somewhere else?;
2180 debugTrace(DEBUG_linker,"MAP_32BIT didn't work; gave us %lu bytes at 0x%p", bytes, result);
2181 munmap(result, size);
2182
2183 // Set a base address and try again... (guess: 1Gb)
2184 mmap_32bit_base = (void*)0x40000000;
2185 goto mmap_again;
2186 }
2187 }
2188 #endif
2189
2190 IF_DEBUG(linker, debugBelch("mmapForLinker: mapped %" FMT_Word " bytes starting at %p\n", (W_)size, result));
2191 IF_DEBUG(linker, debugBelch("mmapForLinker: done\n"));
2192 return result;
2193 }
2194 #endif // USE_MMAP
2195
2196
2197 void freeObjectCode (ObjectCode *oc)
2198 {
2199 #ifdef USE_MMAP
2200 int pagesize, size, r;
2201
2202 pagesize = getpagesize();
2203 size = ROUND_UP(oc->fileSize, pagesize);
2204
2205 r = munmap(oc->image, size);
2206 if (r == -1) {
2207 sysErrorBelch("munmap");
2208 }
2209
2210 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2211 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2212 if (!USE_CONTIGUOUS_MMAP)
2213 {
2214 munmap(oc->symbol_extras,
2215 ROUND_UP(sizeof(SymbolExtra) * oc->n_symbol_extras, pagesize));
2216 }
2217 #endif
2218 #endif
2219
2220 #else
2221
2222 #ifndef mingw32_HOST_OS
2223 stgFree(oc->image);
2224 #else
2225 VirtualFree(oc->image - PEi386_IMAGE_OFFSET, 0, MEM_RELEASE);
2226
2227 IndirectAddr *ia, *ia_next;
2228 ia = indirects;
2229 while (ia != NULL) {
2230 ia_next = ia->next;
2231 stgFree(ia);
2232 ia = ia_next;
2233 }
2234
2235 #endif
2236
2237 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2238 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2239 stgFree(oc->symbol_extras);
2240 #endif
2241 #endif
2242
2243 #endif
2244
2245 stgFree(oc->fileName);
2246 stgFree(oc->archiveMemberName);
2247 stgFree(oc);
2248 }
2249
2250
2251 static ObjectCode*
2252 mkOc( pathchar *path, char *image, int imageSize,
2253 char *archiveMemberName
2254 #ifndef USE_MMAP
2255 #ifdef darwin_HOST_OS
2256 , int misalignment
2257 #endif
2258 #endif
2259 ) {
2260 ObjectCode* oc;
2261
2262 IF_DEBUG(linker, debugBelch("mkOc: start\n"));
2263 oc = stgMallocBytes(sizeof(ObjectCode), "loadArchive(oc)");
2264
2265 # if defined(OBJFORMAT_ELF)
2266 oc->formatName = "ELF";
2267 # elif defined(OBJFORMAT_PEi386)
2268 oc->formatName = "PEi386";
2269 # elif defined(OBJFORMAT_MACHO)
2270 oc->formatName = "Mach-O";
2271 # else
2272 stgFree(oc);
2273 barf("loadObj: not implemented on this platform");
2274 # endif
2275
2276 oc->image = image;
2277 oc->fileName = pathdup(path);
2278
2279 if (archiveMemberName) {
2280 oc->archiveMemberName = stgMallocBytes( strlen(archiveMemberName)+1, "loadObj" );
2281 strcpy(oc->archiveMemberName, archiveMemberName);
2282 }
2283 else {
2284 oc->archiveMemberName = NULL;
2285 }
2286
2287 oc->fileSize = imageSize;
2288 oc->symbols = NULL;
2289 oc->sections = NULL;
2290 oc->proddables = NULL;
2291 oc->stable_ptrs = NULL;
2292
2293 #ifndef USE_MMAP
2294 #ifdef darwin_HOST_OS
2295 oc->misalignment = misalignment;
2296 #endif
2297 #endif
2298
2299 /* chain it onto the list of objects */
2300 oc->next = objects;
2301 objects = oc;
2302
2303 IF_DEBUG(linker, debugBelch("mkOc: done\n"));
2304 return oc;
2305 }
2306
2307 /* -----------------------------------------------------------------------------
2308 * Check if an object or archive is already loaded.
2309 *
2310 * Returns: 1 if the path is already loaded, 0 otherwise.
2311 */
2312 static HsInt
2313 isAlreadyLoaded( pathchar *path )
2314 {
2315 ObjectCode *o;
2316 for (o = objects; o; o = o->next) {
2317 if (0 == pathcmp(o->fileName, path)) {
2318 return 1; /* already loaded */
2319 }
2320 }
2321 return 0; /* not loaded yet */
2322 }
2323
2324 HsInt
2325 loadArchive( pathchar *path )
2326 {
2327 ObjectCode* oc;
2328 char *image;
2329 int memberSize;
2330 FILE *f;
2331 int n;
2332 size_t thisFileNameSize;
2333 char *fileName;
2334 size_t fileNameSize;
2335 int isObject, isGnuIndex, isThin;
2336 char tmp[20];
2337 char *gnuFileIndex;
2338 int gnuFileIndexSize;
2339 #if defined(darwin_HOST_OS)
2340 int i;
2341 uint32_t nfat_arch, nfat_offset, cputype, cpusubtype;
2342 #if defined(i386_HOST_ARCH)
2343 const uint32_t mycputype = CPU_TYPE_X86;
2344 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_ALL;
2345 #elif defined(x86_64_HOST_ARCH)
2346 const uint32_t mycputype = CPU_TYPE_X86_64;
2347 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_64_ALL;
2348 #elif defined(powerpc_HOST_ARCH)
2349 const uint32_t mycputype = CPU_TYPE_POWERPC;
2350 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2351 #elif defined(powerpc64_HOST_ARCH)
2352 const uint32_t mycputype = CPU_TYPE_POWERPC64;
2353 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2354 #else
2355 #error Unknown Darwin architecture
2356 #endif
2357 #if !defined(USE_MMAP)
2358 int misalignment;
2359 #endif
2360 #endif
2361
2362 initLinker();
2363
2364 IF_DEBUG(linker, debugBelch("loadArchive: start\n"));
2365 IF_DEBUG(linker, debugBelch("loadArchive: Loading archive `%" PATH_FMT" '\n", path));
2366
2367 /* Check that we haven't already loaded this archive.
2368 Ignore requests to load multiple times */
2369 if (isAlreadyLoaded(path)) {
2370 IF_DEBUG(linker,
2371 debugBelch("ignoring repeated load of %" PATH_FMT "\n", path));
2372 return 1; /* success */
2373 }
2374
2375 gnuFileIndex = NULL;
2376 gnuFileIndexSize = 0;
2377
2378 fileNameSize = 32;
2379 fileName = stgMallocBytes(fileNameSize, "loadArchive(fileName)");
2380
2381 isThin = 0;
2382
2383 f = pathopen(path, WSTR("rb"));
2384 if (!f)
2385 barf("loadObj: can't read `%s'", path);
2386
2387 /* Check if this is an archive by looking for the magic "!<arch>\n"
2388 * string. Usually, if this fails, we barf and quit. On Darwin however,
2389 * we may have a fat archive, which contains archives for more than
2390 * one architecture. Fat archives start with the magic number 0xcafebabe,
2391 * always stored big endian. If we find a fat_header, we scan through
2392 * the fat_arch structs, searching through for one for our host
2393 * architecture. If a matching struct is found, we read the offset
2394 * of our archive data (nfat_offset) and seek forward nfat_offset bytes
2395 * from the start of the file.
2396 *
2397 * A subtlety is that all of the members of the fat_header and fat_arch
2398 * structs are stored big endian, so we need to call byte order
2399 * conversion functions.
2400 *
2401 * If we find the appropriate architecture in a fat archive, we gobble
2402 * its magic "!<arch>\n" string and continue processing just as if
2403 * we had a single architecture archive.
2404 */
2405
2406 n = fread ( tmp, 1, 8, f );
2407 if (n != 8)
2408 barf("loadArchive: Failed reading header from `%s'", path);
2409 if (strncmp(tmp, "!<arch>\n", 8) == 0) {}
2410 #if !defined(mingw32_HOST_OS)
2411 /* See Note [thin archives on Windows] */
2412 else if (strncmp(tmp, "!<thin>\n", 8) == 0) {
2413 isThin = 1;
2414 }
2415 #endif
2416 #if defined(darwin_HOST_OS)
2417 /* Not a standard archive, look for a fat archive magic number: */
2418 else if (ntohl(*(uint32_t *)tmp) == FAT_MAGIC) {
2419 nfat_arch = ntohl(*(uint32_t *)(tmp + 4));
2420 IF_DEBUG(linker, debugBelch("loadArchive: found a fat archive containing %d architectures\n", nfat_arch));
2421 nfat_offset = 0;
2422
2423 for (i = 0; i < (int)nfat_arch; i++) {
2424 /* search for the right arch */
2425 n = fread( tmp, 1, 20, f );
2426 if (n != 8)
2427 barf("loadArchive: Failed reading arch from `%s'", path);
2428 cputype = ntohl(*(uint32_t *)tmp);
2429 cpusubtype = ntohl(*(uint32_t *)(tmp + 4));
2430
2431 if (cputype == mycputype && cpusubtype == mycpusubtype) {
2432 IF_DEBUG(linker, debugBelch("loadArchive: found my archive in a fat archive\n"));
2433 nfat_offset = ntohl(*(uint32_t *)(tmp + 8));
2434 break;
2435 }
2436 }
2437
2438 if (nfat_offset == 0) {
2439 barf ("loadArchive: searched %d architectures, but no host arch found", (int)nfat_arch);
2440 }
2441 else {
2442 n = fseek( f, nfat_offset, SEEK_SET );
2443 if (n != 0)
2444 barf("loadArchive: Failed to seek to arch in `%s'", path);
2445 n = fread ( tmp, 1, 8, f );
2446 if (n != 8)
2447 barf("loadArchive: Failed reading header from `%s'", path);
2448 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2449 barf("loadArchive: couldn't find archive in `%s' at offset %d", path, nfat_offset);
2450 }
2451 }
2452 }
2453 else {
2454 barf("loadArchive: Neither an archive, nor a fat archive: `%s'", path);
2455 }
2456 #else
2457 else {
2458 barf("loadArchive: Not an archive: `%s'", path);
2459 }
2460 #endif
2461
2462 IF_DEBUG(linker, debugBelch("loadArchive: loading archive contents\n"));
2463
2464 while(1) {
2465 n = fread ( fileName, 1, 16, f );
2466 if (n != 16) {
2467 if (feof(f)) {
2468 IF_DEBUG(linker, debugBelch("loadArchive: EOF while reading from '%" PATH_FMT "'\n", path));
2469 break;
2470 }
2471 else {
2472 barf("loadArchive: Failed reading file name from `%s'", path);
2473 }
2474 }
2475
2476 #if defined(darwin_HOST_OS)
2477 if (strncmp(fileName, "!<arch>\n", 8) == 0) {
2478 IF_DEBUG(linker, debugBelch("loadArchive: found the start of another archive, breaking\n"));
2479 break;
2480 }
2481 #endif
2482
2483 n = fread ( tmp, 1, 12, f );
2484 if (n != 12)
2485 barf("loadArchive: Failed reading mod time from `%s'", path);
2486 n = fread ( tmp, 1, 6, f );
2487 if (n != 6)
2488 barf("loadArchive: Failed reading owner from `%s'", path);
2489 n = fread ( tmp, 1, 6, f );
2490 if (n != 6)
2491 barf("loadArchive: Failed reading group from `%s'", path);
2492 n = fread ( tmp, 1, 8, f );
2493 if (n != 8)
2494 barf("loadArchive: Failed reading mode from `%s'", path);
2495 n = fread ( tmp, 1, 10, f );
2496 if (n != 10)
2497 barf("loadArchive: Failed reading size from `%s'", path);
2498 tmp[10] = '\0';
2499 for (n = 0; isdigit(tmp[n]); n++);
2500 tmp[n] = '\0';
2501 memberSize = atoi(tmp);
2502
2503 IF_DEBUG(linker, debugBelch("loadArchive: size of this archive member is %d\n", memberSize));
2504 n = fread ( tmp, 1, 2, f );
2505 if (n != 2)
2506 barf("loadArchive: Failed reading magic from `%s'", path);
2507 if (strncmp(tmp, "\x60\x0A", 2) != 0)
2508 barf("loadArchive: Failed reading magic from `%s' at %ld. Got %c%c",
2509 path, ftell(f), tmp[0], tmp[1]);
2510
2511 isGnuIndex = 0;
2512 /* Check for BSD-variant large filenames */
2513 if (0 == strncmp(fileName, "#1/", 3)) {
2514 fileName[16] = '\0';
2515 if (isdigit(fileName[3])) {
2516 for (n = 4; isdigit(fileName[n]); n++);
2517 fileName[n] = '\0';
2518 thisFileNameSize = atoi(fileName + 3);
2519 memberSize -= thisFileNameSize;
2520 if (thisFileNameSize >= fileNameSize) {
2521 /* Double it to avoid potentially continually
2522 increasing it by 1 */
2523 fileNameSize = thisFileNameSize * 2;
2524 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2525 }
2526 n = fread ( fileName, 1, thisFileNameSize, f );
2527 if (n != (int)thisFileNameSize) {
2528 barf("loadArchive: Failed reading filename from `%s'",
2529 path);
2530 }
2531 fileName[thisFileNameSize] = 0;
2532
2533 /* On OS X at least, thisFileNameSize is the size of the
2534 fileName field, not the length of the fileName
2535 itself. */
2536 thisFileNameSize = strlen(fileName);
2537 }
2538 else {
2539 barf("loadArchive: BSD-variant filename size not found while reading filename from `%s'", path);
2540 }
2541 }
2542 /* Check for GNU file index file */
2543 else if (0 == strncmp(fileName, "//", 2)) {
2544 fileName[0] = '\0';
2545 thisFileNameSize = 0;
2546 isGnuIndex = 1;
2547 }
2548 /* Check for a file in the GNU file index */
2549 else if (fileName[0] == '/') {
2550 if (isdigit(fileName[1])) {
2551 int i;
2552
2553 for (n = 2; isdigit(fileName[n]); n++);
2554 fileName[n] = '\0';
2555 n = atoi(fileName + 1);
2556
2557 if (gnuFileIndex == NULL) {
2558 barf("loadArchive: GNU-variant filename without an index while reading from `%s'", path);
2559 }
2560 if (n < 0 || n > gnuFileIndexSize) {
2561 barf("loadArchive: GNU-variant filename offset %d out of range [0..%d] while reading filename from `%s'", n, gnuFileIndexSize, path);
2562 }
2563 if (n != 0 && gnuFileIndex[n - 1] != '\n') {
2564 barf("loadArchive: GNU-variant filename offset %d invalid (range [0..%d]) while reading filename from `%s'", n, gnuFileIndexSize, path);
2565 }
2566 for (i = n; gnuFileIndex[i] != '\n'; i++);
2567 thisFileNameSize = i - n - 1;
2568 if (thisFileNameSize >= fileNameSize) {
2569 /* Double it to avoid potentially continually
2570 increasing it by 1 */
2571 fileNameSize = thisFileNameSize * 2;
2572 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2573 }
2574 memcpy(fileName, gnuFileIndex + n, thisFileNameSize);
2575 fileName[thisFileNameSize] = '\0';
2576 }
2577 else if (fileName[1] == ' ') {
2578 fileName[0] = '\0';
2579 thisFileNameSize = 0;
2580 }
2581 else {
2582 barf("loadArchive: GNU-variant filename offset not found while reading filename from `%s'", path);
2583 }
2584 }
2585 /* Finally, the case where the filename field actually contains
2586 the filename */
2587 else {
2588 /* GNU ar terminates filenames with a '/', this allowing
2589 spaces in filenames. So first look to see if there is a
2590 terminating '/'. */
2591 for (thisFileNameSize = 0;
2592 thisFileNameSize < 16;
2593 thisFileNameSize++) {
2594 if (fileName[thisFileNameSize] == '/') {
2595 fileName[thisFileNameSize] = '\0';
2596 break;
2597 }
2598 }
2599 /* If we didn't find a '/', then a space teminates the
2600 filename. Note that if we don't find one, then
2601 thisFileNameSize ends up as 16, and we already have the
2602 '\0' at the end. */
2603 if (thisFileNameSize == 16) {
2604 for (thisFileNameSize = 0;
2605 thisFileNameSize < 16;
2606 thisFileNameSize++) {
2607 if (fileName[thisFileNameSize] == ' ') {
2608 fileName[thisFileNameSize] = '\0';
2609 break;
2610 }
2611 }
2612 }
2613 }
2614
2615 IF_DEBUG(linker,
2616 debugBelch("loadArchive: Found member file `%s'\n", fileName));
2617
2618 isObject = thisFileNameSize >= 2
2619 && fileName[thisFileNameSize - 2] == '.'
2620 && fileName[thisFileNameSize - 1] == 'o';
2621
2622 IF_DEBUG(linker, debugBelch("loadArchive: \tthisFileNameSize = %d\n", (int)thisFileNameSize));
2623 IF_DEBUG(linker, debugBelch("loadArchive: \tisObject = %d\n", isObject));
2624
2625 if (isObject) {
2626 char *archiveMemberName;
2627
2628 IF_DEBUG(linker, debugBelch("loadArchive: Member is an object file...loading...\n"));
2629
2630 /* We can't mmap from the archive directly, as object
2631 files need to be 8-byte aligned but files in .ar
2632 archives are 2-byte aligned. When possible we use mmap
2633 to get some anonymous memory, as on 64-bit platforms if
2634 we use malloc then we can be given memory above 2^32.
2635 In the mmap case we're probably wasting lots of space;
2636 we could do better. */
2637 #if defined(USE_MMAP)
2638 image = mmapForLinker(memberSize, MAP_ANONYMOUS, -1);
2639 #elif defined(mingw32_HOST_OS)
2640 // TODO: We would like to use allocateExec here, but allocateExec
2641 // cannot currently allocate blocks large enough.
2642 image = allocateImageAndTrampolines(
2643 #if defined(x86_64_HOST_ARCH)
2644 f, path, fileName,
2645 #endif
2646 memberSize);
2647 #elif defined(darwin_HOST_OS)
2648 /* See loadObj() */
2649 misalignment = machoGetMisalignment(f);
2650 image = stgMallocBytes(memberSize + misalignment, "loadArchive(image)");
2651 image += misalignment;
2652 #else
2653 image = stgMallocBytes(memberSize, "loadArchive(image)");
2654 #endif
2655
2656 #if !defined(mingw32_HOST_OS)
2657 /*
2658 * Note [thin archives on Windows]
2659 * This doesn't compile on Windows because it assumes
2660 * char* pathnames, and we use wchar_t* on Windows. It's
2661 * not trivial to fix, so I'm leaving it disabled on
2662 * Windows for now --SDM
2663 */
2664 if (isThin) {
2665 FILE *member;
2666 char *pathCopy, *dirName, *memberPath;
2667
2668 /* Allocate and setup the dirname of the archive. We'll need
2669 this to locate the thin member */
2670 pathCopy = stgMallocBytes(strlen(path) + 1, "loadArchive(file)");
2671 strcpy(pathCopy, path);
2672 dirName = dirname(pathCopy);
2673
2674 /* Append the relative member name to the dirname. This should be
2675 be the full path to the actual thin member. */
2676 memberPath = stgMallocBytes(
2677 strlen(path) + 1 + strlen(fileName) + 1, "loadArchive(file)");
2678 strcpy(memberPath, dirName);
2679 memberPath[strlen(dirName)] = '/';
2680 strcpy(memberPath + strlen(dirName) + 1, fileName);
2681
2682 member = pathopen(memberPath, WSTR("rb"));
2683 if (!member)
2684 barf("loadObj: can't read `%s'", path);
2685
2686 n = fread ( image, 1, memberSize, member );
2687 if (n != memberSize) {
2688 barf("loadArchive: error whilst reading `%s'", fileName);
2689 }
2690
2691 fclose(member);
2692 stgFree(memberPath);
2693 stgFree(pathCopy);
2694 }
2695 else
2696 #endif
2697 {
2698 n = fread ( image, 1, memberSize, f );
2699 if (n != memberSize) {
2700 barf("loadArchive: error whilst reading `%s'", path);
2701 }
2702 }
2703
2704 archiveMemberName = stgMallocBytes(pathlen(path) + thisFileNameSize + 3,
2705 "loadArchive(file)");
2706 sprintf(archiveMemberName, "%" PATH_FMT "(%.*s)",
2707 path, (int)thisFileNameSize, fileName);
2708
2709 oc = mkOc(path, image, memberSize, archiveMemberName
2710 #ifndef USE_MMAP
2711 #ifdef darwin_HOST_OS
2712 , misalignment
2713 #endif
2714 #endif
2715 );
2716
2717 stgFree(archiveMemberName);
2718
2719 if (0 == loadOc(oc)) {
2720 stgFree(fileName);
2721 return 0;
2722 }
2723 }
2724 else if (isGnuIndex) {
2725 if (gnuFileIndex != NULL) {
2726 barf("loadArchive: GNU-variant index found, but already have an index, while reading filename from `%s'", path);
2727 }
2728 IF_DEBUG(linker, debugBelch("loadArchive: Found GNU-variant file index\n"));
2729 #ifdef USE_MMAP
2730 gnuFileIndex = mmapForLinker(memberSize + 1, MAP_ANONYMOUS, -1);
2731 #else
2732 gnuFileIndex = stgMallocBytes(memberSize + 1, "loadArchive(image)");
2733 #endif
2734 n = fread ( gnuFileIndex, 1, memberSize, f );
2735 if (n != memberSize) {
2736 barf("loadArchive: error whilst reading `%s'", path);
2737 }
2738 gnuFileIndex[memberSize] = '/';
2739 gnuFileIndexSize = memberSize;
2740 }
2741 else {
2742 IF_DEBUG(linker, debugBelch("loadArchive: '%s' does not appear to be an object file\n", fileName));
2743 if (!isThin || thisFileNameSize == 0) {
2744 n = fseek(f, memberSize, SEEK_CUR);
2745 if (n != 0)
2746 barf("loadArchive: error whilst seeking by %d in `%s'",
2747 memberSize, path);
2748 }
2749 }
2750
2751 /* .ar files are 2-byte aligned */
2752 if (!(isThin && thisFileNameSize > 0) && memberSize % 2) {
2753 IF_DEBUG(linker, debugBelch("loadArchive: trying to read one pad byte\n"));
2754 n = fread ( tmp, 1, 1, f );
2755 if (n != 1) {
2756 if (feof(f)) {
2757 IF_DEBUG(linker, debugBelch("loadArchive: found EOF while reading one pad byte\n"));
2758 break;
2759 }
2760 else {
2761 barf("loadArchive: Failed reading padding from `%s'", path);
2762 }
2763 }
2764 IF_DEBUG(linker, debugBelch("loadArchive: successfully read one pad byte\n"));
2765 }
2766 IF_DEBUG(linker, debugBelch("loadArchive: reached end of archive loading while loop\n"));
2767 }
2768
2769 fclose(f);
2770
2771 stgFree(fileName);
2772 if (gnuFileIndex != NULL) {
2773 #ifdef USE_MMAP
2774 munmap(gnuFileIndex, gnuFileIndexSize + 1);
2775 #else
2776 stgFree(gnuFileIndex);
2777 #endif
2778 }
2779
2780 IF_DEBUG(linker, debugBelch("loadArchive: done\n"));
2781 return 1;
2782 }
2783
2784 /* -----------------------------------------------------------------------------
2785 * Load an obj (populate the global symbol table, but don't resolve yet)
2786 *
2787 * Returns: 1 if ok, 0 on error.
2788 */
2789 HsInt
2790 loadObj( pathchar *path )
2791 {
2792 ObjectCode* oc;
2793 char *image;
2794 int fileSize;
2795 struct_stat st;
2796 int r;
2797 #ifdef USE_MMAP
2798 int fd;
2799 #else
2800 FILE *f;
2801 # if defined(darwin_HOST_OS)
2802 int misalignment;
2803 # endif
2804 #endif
2805 IF_DEBUG(linker, debugBelch("loadObj %" PATH_FMT "\n", path));
2806
2807 initLinker();
2808
2809 /* debugBelch("loadObj %s\n", path ); */
2810
2811 /* Check that we haven't already loaded this object.
2812 Ignore requests to load multiple times */
2813 if (isAlreadyLoaded(path)) {
2814 IF_DEBUG(linker,
2815 debugBelch("ignoring repeated load of %" PATH_FMT "\n", path));
2816 return 1; /* success */
2817 }
2818
2819 r = pathstat(path, &st);
2820 if (r == -1) {
2821 IF_DEBUG(linker, debugBelch("File doesn't exist\n"));
2822 return 0;
2823 }
2824
2825 fileSize = st.st_size;
2826
2827 #ifdef USE_MMAP
2828 /* On many architectures malloc'd memory isn't executable, so we need to use mmap. */
2829
2830 #if defined(openbsd_HOST_OS)
2831 fd = open(path, O_RDONLY, S_IRUSR);
2832 #else
2833 fd = open(path, O_RDONLY);
2834 #endif
2835 if (fd == -1)
2836 barf("loadObj: can't open `%s'", path);
2837
2838 image = mmapForLinker(fileSize, 0, fd);
2839
2840 close(fd);
2841
2842 #else /* !USE_MMAP */
2843 /* load the image into memory */
2844 f = pathopen(path, WSTR("rb"));
2845 if (!f)
2846 barf("loadObj: can't read `%" PATH_FMT "'", path);
2847
2848 # if defined(mingw32_HOST_OS)
2849 // TODO: We would like to use allocateExec here, but allocateExec
2850 // cannot currently allocate blocks large enough.
2851 image = allocateImageAndTrampolines(
2852 #if defined(x86_64_HOST_ARCH)
2853 f, path, "itself",
2854 #endif
2855 fileSize);
2856 # elif defined(darwin_HOST_OS)
2857 // In a Mach-O .o file, all sections can and will be misaligned
2858 // if the total size of the headers is not a multiple of the
2859 // desired alignment. This is fine for .o files that only serve
2860 // as input for the static linker, but it's not fine for us,
2861 // as SSE (used by gcc for floating point) and Altivec require
2862 // 16-byte alignment.
2863 // We calculate the correct alignment from the header before
2864 // reading the file, and then we misalign image on purpose so
2865 // that the actual sections end up aligned again.
2866 misalignment = machoGetMisalignment(f);
2867 image = stgMallocBytes(fileSize + misalignment, "loadObj(image)");
2868 image += misalignment;
2869 # else
2870 image = stgMallocBytes(fileSize, "loadObj(image)");
2871 # endif
2872
2873 {
2874 int n;
2875 n = fread ( image, 1, fileSize, f );
2876 if (n != fileSize)
2877 barf("loadObj: error whilst reading `%s'", path);
2878 }
2879 fclose(f);
2880 #endif /* USE_MMAP */
2881
2882 oc = mkOc(path, image, fileSize, NULL
2883 #ifndef USE_MMAP
2884 #ifdef darwin_HOST_OS
2885 , misalignment
2886 #endif
2887 #endif
2888 );
2889
2890 return loadOc(oc);
2891 }
2892
2893 static HsInt
2894 loadOc( ObjectCode* oc ) {
2895 int r;
2896
2897 IF_DEBUG(linker, debugBelch("loadOc: start\n"));
2898
2899 # if defined(OBJFORMAT_MACHO) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH))
2900 r = ocAllocateSymbolExtras_MachO ( oc );
2901 if (!r) {
2902 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_MachO failed\n"));
2903 return r;
2904 }
2905 # elif defined(OBJFORMAT_ELF) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH))
2906 r = ocAllocateSymbolExtras_ELF ( oc );
2907 if (!r) {
2908 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_ELF failed\n"));
2909 return r;
2910 }
2911 # elif defined(OBJFORMAT_PEi386) && defined(x86_64_HOST_ARCH)
2912 ocAllocateSymbolExtras_PEi386 ( oc );
2913 #endif
2914
2915 /* verify the in-memory image */
2916 # if defined(OBJFORMAT_ELF)
2917 r = ocVerifyImage_ELF ( oc );
2918 # elif defined(OBJFORMAT_PEi386)
2919 r = ocVerifyImage_PEi386 ( oc );
2920 # elif defined(OBJFORMAT_MACHO)
2921 r = ocVerifyImage_MachO ( oc );
2922 # else
2923 barf("loadObj: no verify method");
2924 # endif
2925 if (!r) {
2926 IF_DEBUG(linker, debugBelch("loadOc: ocVerifyImage_* failed\n"));
2927 return r;
2928 }
2929
2930 /* build the symbol list for this image */
2931 # if defined(OBJFORMAT_ELF)
2932 r = ocGetNames_ELF ( oc );
2933 # elif defined(OBJFORMAT_PEi386)
2934 r = ocGetNames_PEi386 ( oc );
2935 # elif defined(OBJFORMAT_MACHO)
2936 r = ocGetNames_MachO ( oc );
2937 # else
2938 barf("loadObj: no getNames method");
2939 # endif
2940 if (!r) {
2941 IF_DEBUG(linker, debugBelch("loadOc: ocGetNames_* failed\n"));
2942 return r;
2943 }
2944
2945 /* loaded, but not resolved yet */
2946 oc->status = OBJECT_LOADED;
2947 IF_DEBUG(linker, debugBelch("loadOc: done.\n"));
2948
2949 return 1;
2950 }
2951
2952 /* -----------------------------------------------------------------------------
2953 * resolve all the currently unlinked objects in memory
2954 *
2955 * Returns: 1 if ok, 0 on error.
2956 */
2957 HsInt
2958 resolveObjs( void )
2959 {
2960 ObjectCode *oc;
2961 int r;
2962
2963 IF_DEBUG(linker, debugBelch("resolveObjs: start\n"));
2964 initLinker();
2965
2966 for (oc = objects; oc; oc = oc->next) {
2967 if (oc->status != OBJECT_RESOLVED) {
2968 # if defined(OBJFORMAT_ELF)
2969 r = ocResolve_ELF ( oc );
2970 # elif defined(OBJFORMAT_PEi386)
2971 r = ocResolve_PEi386 ( oc );
2972 # elif defined(OBJFORMAT_MACHO)
2973 r = ocResolve_MachO ( oc );
2974 # else
2975 barf("resolveObjs: not implemented on this platform");
2976 # endif
2977 if (!r) { return r; }
2978
2979 // run init/init_array/ctors/mod_init_func
2980
2981 loading_obj = oc; // tells foreignExportStablePtr what to do
2982 #if defined(OBJFORMAT_ELF)
2983 r = ocRunInit_ELF ( oc );
2984 #elif defined(OBJFORMAT_PEi386)
2985 r = ocRunInit_PEi386 ( oc );
2986 #elif defined(OBJFORMAT_MACHO)
2987 r = ocRunInit_MachO ( oc );
2988 #else
2989 barf("resolveObjs: initializers not implemented on this platform");
2990 #endif
2991 loading_obj = NULL;
2992
2993 if (!r) { return r; }
2994
2995 oc->status = OBJECT_RESOLVED;
2996 }
2997 }
2998 IF_DEBUG(linker, debugBelch("resolveObjs: done\n"));
2999 return 1;
3000 }
3001
3002 /* -----------------------------------------------------------------------------
3003 * delete an object from the pool
3004 */
3005 HsInt
3006 unloadObj( pathchar *path )
3007 {
3008 ObjectCode *oc, *prev, *next;
3009 HsBool unloadedAnyObj = HS_BOOL_FALSE;
3010
3011 ASSERT(symhash != NULL);
3012 ASSERT(objects != NULL);
3013
3014 initLinker();
3015
3016 IF_DEBUG(linker, debugBelch("unloadObj: %" PATH_FMT "\n", path));
3017
3018 prev = NULL;
3019 for (oc = objects; oc; oc = next) {
3020 next = oc->next; // oc might be freed
3021
3022 if (!pathcmp(oc->fileName,path)) {
3023
3024 /* Remove all the mappings for the symbols within this
3025 * object..
3026 */
3027 {
3028 int i;
3029 for (i = 0; i < oc->n_symbols; i++) {
3030 if (oc->symbols[i] != NULL) {
3031 ghciRemoveSymbolTable(symhash, oc->symbols[i], oc);
3032 }
3033 }
3034 }
3035
3036 if (prev == NULL) {
3037 objects = oc->next;
3038 } else {
3039 prev->next = oc->next;
3040 }
3041 oc->next = unloaded_objects;
3042 unloaded_objects = oc;
3043
3044 // The data itself and a few other bits (oc->fileName,
3045 // oc->archiveMemberName) are kept until freeObjectCode(),
3046 // which is only called when it has been determined that
3047 // it is safe to unload the object.
3048 stgFree(oc->symbols);
3049
3050 {
3051 Section *s, *nexts;
3052
3053 for (s = oc->sections; s != NULL; s = nexts) {
3054 nexts = s->next;
3055 stgFree(s);
3056 }
3057 }
3058
3059 freeProddableBlocks(oc);
3060
3061 // Release any StablePtrs that were created when this
3062 // object module was initialized.
3063 {
3064 ForeignExportStablePtr *fe_ptr, *next;
3065
3066 for (fe_ptr = oc->stable_ptrs; fe_ptr != NULL; fe_ptr = next) {
3067 next = fe_ptr->next;
3068 freeStablePtr(fe_ptr->stable_ptr);
3069 stgFree(fe_ptr);
3070 }
3071 }
3072
3073 oc->status = OBJECT_UNLOADED;
3074
3075 /* This could be a member of an archive so continue
3076 * unloading other members. */
3077 unloadedAnyObj = HS_BOOL_TRUE;
3078 } else {
3079 prev = oc;
3080 }
3081 }
3082
3083 if (unloadedAnyObj) {
3084 return 1;
3085 }
3086 else {
3087 errorBelch("unloadObj: can't find `%" PATH_FMT "' to unload", path);
3088 return 0;
3089 }
3090 }
3091
3092 /* -----------------------------------------------------------------------------
3093 * Sanity checking. For each ObjectCode, maintain a list of address ranges
3094 * which may be prodded during relocation, and abort if we try and write
3095 * outside any of these.
3096 */
3097 static void
3098 addProddableBlock ( ObjectCode* oc, void* start, int size )
3099 {
3100 ProddableBlock* pb
3101 = stgMallocBytes(sizeof(ProddableBlock), "addProddableBlock");
3102
3103 IF_DEBUG(linker, debugBelch("addProddableBlock: %p %p %d\n", oc, start, size));
3104 ASSERT(size > 0);
3105 pb->start = start;
3106 pb->size = size;
3107 pb->next = oc->proddables;
3108 oc->proddables = pb;
3109 }
3110
3111 static void
3112 checkProddableBlock (ObjectCode *oc, void *addr, size_t size )
3113 {
3114 ProddableBlock* pb;
3115
3116 for (pb = oc->proddables; pb != NULL; pb = pb->next) {
3117 char* s = (char*)(pb->start);
3118 char* e = s + pb->size;
3119 char* a = (char*)addr;
3120 if (a >= s && (a+size) <= e) return;
3121 }
3122 barf("checkProddableBlock: invalid fixup in runtime linker: %p", addr);
3123 }
3124
3125 static void freeProddableBlocks (ObjectCode *oc)
3126 {
3127 ProddableBlock *pb, *next;
3128
3129 for (pb = oc->proddables; pb != NULL; pb = next) {
3130 next = pb->next;
3131 stgFree(pb);
3132 }
3133 oc->proddables = NULL;
3134 }
3135
3136 /* -----------------------------------------------------------------------------
3137 * Section management.
3138 */
3139 static void
3140 addSection ( ObjectCode* oc, SectionKind kind,
3141 void* start, void* end )
3142 {
3143 Section* s = stgMallocBytes(sizeof(Section), "addSection");
3144 s->start = start;
3145 s->end = end;
3146 s->kind = kind;
3147 s->next = oc->sections;
3148 oc->sections = s;
3149
3150 IF_DEBUG(linker, debugBelch("addSection: %p-%p (size %lld), kind %d\n",
3151 start, ((char*)end)-1, ((long long)(size_t)end) - ((long long)(size_t)start) + 1, kind ));
3152 }
3153
3154
3155 /* --------------------------------------------------------------------------
3156 * Symbol Extras.
3157 * This is about allocating a small chunk of memory for every symbol in the
3158 * object file. We make sure that the SymboLExtras are always "in range" of
3159 * limited-range PC-relative instructions on various platforms by allocating
3160 * them right next to the object code itself.
3161 */
3162
3163 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3164 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3165
3166 /*
3167 ocAllocateSymbolExtras
3168
3169 Allocate additional space at the end of the object file image to make room
3170 for jump islands (powerpc, x86_64, arm) and GOT entries (x86_64).
3171
3172 PowerPC relative branch instructions have a 24 bit displacement field.
3173 As PPC code is always 4-byte-aligned, this yields a +-32MB range.
3174 If a particular imported symbol is outside this range, we have to redirect
3175 the jump to a short piece of new code that just loads the 32bit absolute
3176 address and jumps there.
3177 On x86_64, PC-relative jumps and PC-relative accesses to the GOT are limited
3178 to 32 bits (+-2GB).
3179
3180 This function just allocates space for one SymbolExtra for every
3181 undefined symbol in the object file. The code for the jump islands is
3182 filled in by makeSymbolExtra below.
3183 */
3184
3185 static int ocAllocateSymbolExtras( ObjectCode* oc, int count, int first )
3186 {
3187 #ifdef USE_MMAP
3188 int pagesize, n, m;
3189 #endif
3190 int aligned;
3191 #ifndef USE_MMAP
3192 int misalignment = 0;
3193 #ifdef darwin_HOST_OS
3194 misalignment = oc->misalignment;
3195 #endif
3196 #endif
3197
3198 if( count > 0 )
3199 {
3200 // round up to the nearest 4
3201 aligned = (oc->fileSize + 3) & ~3;
3202
3203 #ifdef USE_MMAP
3204 pagesize = getpagesize();
3205 n = ROUND_UP( oc->fileSize, pagesize );
3206 m = ROUND_UP( aligned + sizeof (SymbolExtra) * count, pagesize );
3207
3208 /* we try to use spare space at the end of the last page of the
3209 * image for the jump islands, but if there isn't enough space
3210 * then we have to map some (anonymously, remembering MAP_32BIT).
3211 */
3212 if( m > n ) // we need to allocate more pages
3213 {
3214 if (USE_CONTIGUOUS_MMAP)
3215 {
3216 /* Keep image and symbol_extras contiguous */
3217 void *new = mmapForLinker(n + (sizeof(SymbolExtra) * count),
3218 MAP_ANONYMOUS, -1);
3219 if (new)
3220 {
3221 memcpy(new, oc->image, oc->fileSize);
3222 munmap(oc->image, n);
3223 oc->image = new;
3224 oc->fileSize = n + (sizeof(SymbolExtra) * count);
3225 oc->symbol_extras = (SymbolExtra *) (oc->image + n);
3226 }
3227 else
3228 oc->symbol_extras = NULL;
3229 }
3230 else
3231 {
3232 oc->symbol_extras = mmapForLinker(sizeof(SymbolExtra) * count,
3233 MAP_ANONYMOUS, -1);
3234 }
3235 }
3236 else
3237 {
3238 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3239 }
3240 #else
3241 oc->image -= misalignment;
3242 oc->image = stgReallocBytes( oc->image,
3243 misalignment +
3244 aligned + sizeof (SymbolExtra) * count,
3245 "ocAllocateSymbolExtras" );
3246 oc->image += misalignment;
3247
3248 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3249 #endif /* USE_MMAP */
3250
3251 memset( oc->symbol_extras, 0, sizeof (SymbolExtra) * count );
3252 }
3253 else
3254 oc->symbol_extras = NULL;
3255
3256 oc->first_symbol_extra = first;
3257 oc->n_symbol_extras = count;
3258
3259 return 1;
3260 }
3261
3262 #endif
3263 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3264
3265 #if defined(arm_HOST_ARCH)
3266
3267 static void
3268 ocFlushInstructionCache( ObjectCode *oc )
3269 {
3270 // Object code
3271 __clear_cache(oc->image, oc->image + oc->fileSize);
3272 // Jump islands
3273 __clear_cache(oc->symbol_extras, &oc->symbol_extras[oc->n_symbol_extras]);
3274 }
3275
3276 #endif
3277
3278 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3279 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3280
3281 static SymbolExtra* makeSymbolExtra( ObjectCode* oc,
3282 unsigned long symbolNumber,
3283 unsigned long target )
3284 {
3285 SymbolExtra *extra;
3286
3287 ASSERT( symbolNumber >= oc->first_symbol_extra
3288 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3289
3290 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3291
3292 #ifdef powerpc_HOST_ARCH
3293 // lis r12, hi16(target)
3294 extra->jumpIsland.lis_r12 = 0x3d80;
3295 extra->jumpIsland.hi_addr = target >> 16;
3296
3297 // ori r12, r12, lo16(target)
3298 extra->jumpIsland.ori_r12_r12 = 0x618c;
3299 extra->jumpIsland.lo_addr = target & 0xffff;
3300
3301 // mtctr r12
3302 extra->jumpIsland.mtctr_r12 = 0x7d8903a6;
3303
3304 // bctr
3305 extra->jumpIsland.bctr = 0x4e800420;
3306 #endif
3307 #ifdef x86_64_HOST_ARCH
3308 // jmp *-14(%rip)
3309 static uint8_t jmp[] = { 0xFF, 0x25, 0xF2, 0xFF, 0xFF, 0xFF };
3310 extra->addr = target;
3311 memcpy(extra->jumpIsland, jmp, 6);
3312 #endif
3313
3314 return extra;
3315 }
3316
3317 #endif
3318 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3319
3320 #ifdef arm_HOST_ARCH
3321 static SymbolExtra* makeArmSymbolExtra( ObjectCode* oc,
3322 unsigned long symbolNumber,
3323 unsigned long target,
3324 int fromThumb,
3325 int toThumb )
3326 {
3327 SymbolExtra *extra;
3328
3329 ASSERT( symbolNumber >= oc->first_symbol_extra
3330 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3331
3332 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3333
3334 // Make sure instruction mode bit is set properly
3335 if (toThumb)
3336 target |= 1;
3337 else
3338 target &= ~1;
3339
3340 if (!fromThumb) {
3341 // In ARM encoding:
3342 // movw r12, #0
3343 // movt r12, #0
3344 // bx r12
3345 uint32_t code[] = { 0xe300c000, 0xe340c000, 0xe12fff1c };
3346
3347 // Patch lower half-word into movw
3348 code[0] |= ((target>>12) & 0xf) << 16;
3349 code[0] |= target & 0xfff;
3350 // Patch upper half-word into movt
3351 target >>= 16;
3352 code[1] |= ((target>>12) & 0xf) << 16;
3353 code[1] |= target & 0xfff;
3354
3355 memcpy(extra->jumpIsland, code, 12);
3356
3357 } else {
3358 // In Thumb encoding:
3359 // movw r12, #0
3360 // movt r12, #0
3361 // bx r12
3362 uint16_t code[] = { 0xf240, 0x0c00,
3363 0xf2c0, 0x0c00,
3364 0x4760 };
3365
3366 // Patch lower half-word into movw
3367 code[0] |= (target>>12) & 0xf;
3368 code[0] |= ((target>>11) & 0x1) << 10;
3369 code[1] |= ((target>>8) & 0x7) << 12;
3370 code[1] |= target & 0xff;
3371 // Patch upper half-word into movt
3372 target >>= 16;
3373 code[2] |= (target>>12) & 0xf;
3374 code[2] |= ((target>>11) & 0x1) << 10;
3375 code[3] |= ((target>>8) & 0x7) << 12;
3376 code[3] |= target & 0xff;
3377
3378 memcpy(extra->jumpIsland, code, 10);
3379 }
3380
3381 return extra;
3382 }
3383 #endif // arm_HOST_ARCH
3384
3385 /* --------------------------------------------------------------------------
3386 * PowerPC specifics (instruction cache flushing)
3387 * ------------------------------------------------------------------------*/
3388
3389 #ifdef powerpc_HOST_ARCH
3390 /*
3391 ocFlushInstructionCache
3392
3393 Flush the data & instruction caches.
3394 Because the PPC has split data/instruction caches, we have to
3395 do that whenever we modify code at runtime.
3396 */
3397
3398 static void
3399 ocFlushInstructionCacheFrom(void* begin, size_t length)
3400 {
3401 size_t n = (length + 3) / 4;
3402 unsigned long* p = begin;
3403
3404 while (n--)
3405 {
3406 __asm__ volatile ( "dcbf 0,%0\n\t"
3407 "sync\n\t"
3408 "icbi 0,%0"
3409 :
3410 : "r" (p)
3411 );
3412 p++;
3413 }
3414 __asm__ volatile ( "sync\n\t"
3415 "isync"
3416 );
3417 }
3418
3419 static void
3420 ocFlushInstructionCache( ObjectCode *oc )
3421 {
3422 /* The main object code */
3423 ocFlushInstructionCacheFrom(oc->image
3424 #ifdef darwin_HOST_OS
3425 + oc->misalignment
3426 #endif
3427 , oc->fileSize);
3428
3429 /* Jump Islands */
3430 ocFlushInstructionCacheFrom(oc->symbol_extras, sizeof(SymbolExtra) * oc->n_symbol_extras);
3431 }
3432 #endif /* powerpc_HOST_ARCH */
3433
3434
3435 /* --------------------------------------------------------------------------
3436 * PEi386 specifics (Win32 targets)
3437 * ------------------------------------------------------------------------*/
3438
3439 /* The information for this linker comes from
3440 Microsoft Portable Executable
3441 and Common Object File Format Specification
3442 revision 5.1 January 1998
3443 which SimonM says comes from the MS Developer Network CDs.
3444
3445 It can be found there (on older CDs), but can also be found
3446 online at:
3447
3448 http://www.microsoft.com/hwdev/hardware/PECOFF.asp
3449
3450 (this is Rev 6.0 from February 1999).
3451
3452 Things move, so if that fails, try searching for it via
3453
3454 http://www.google.com/search?q=PE+COFF+specification
3455
3456 The ultimate reference for the PE format is the Winnt.h
3457 header file that comes with the Platform SDKs; as always,
3458 implementations will drift wrt their documentation.
3459
3460 A good background article on the PE format is Matt Pietrek's
3461 March 1994 article in Microsoft System Journal (MSJ)
3462 (Vol.9, No. 3): "Peering Inside the PE: A Tour of the
3463 Win32 Portable Executable File Format." The info in there
3464 has recently been updated in a two part article in
3465 MSDN magazine, issues Feb and March 2002,
3466 "Inside Windows: An In-Depth Look into the Win32 Portable
3467 Executable File Format"
3468
3469 John Levine's book "Linkers and Loaders" contains useful
3470 info on PE too.
3471 */
3472
3473
3474 #if defined(OBJFORMAT_PEi386)
3475
3476
3477
3478 typedef unsigned char UChar;
3479 typedef unsigned short UInt16;
3480 typedef unsigned int UInt32;
3481 typedef int Int32;
3482 typedef unsigned long long int UInt64;
3483
3484
3485 typedef
3486 struct {
3487 UInt16 Machine;
3488 UInt16 NumberOfSections;
3489 UInt32 TimeDateStamp;
3490 UInt32 PointerToSymbolTable;
3491 UInt32 NumberOfSymbols;
3492 UInt16 SizeOfOptionalHeader;
3493 UInt16 Characteristics;
3494 }
3495 COFF_header;
3496
3497 #define sizeof_COFF_header 20
3498
3499
3500 typedef
3501 struct {
3502 UChar Name[8];
3503 UInt32 VirtualSize;
3504 UInt32 VirtualAddress;
3505 UInt32 SizeOfRawData;
3506 UInt32 PointerToRawData;
3507 UInt32 PointerToRelocations;
3508 UInt32 PointerToLinenumbers;
3509 UInt16 NumberOfRelocations;
3510 UInt16 NumberOfLineNumbers;
3511 UInt32 Characteristics;
3512 }
3513 COFF_section;
3514
3515 #define sizeof_COFF_section 40
3516
3517
3518 typedef
3519 struct {
3520 UChar Name[8];
3521 UInt32 Value;
3522 UInt16 SectionNumber;
3523 UInt16 Type;
3524 UChar StorageClass;
3525 UChar NumberOfAuxSymbols;
3526 }
3527 COFF_symbol;
3528
3529 #define sizeof_COFF_symbol 18
3530
3531
3532 typedef
3533 struct {
3534 UInt32 VirtualAddress;
3535 UInt32 SymbolTableIndex;
3536 UInt16 Type;
3537 }
3538 COFF_reloc;
3539
3540 #define sizeof_COFF_reloc 10
3541
3542
3543 /* From PE spec doc, section 3.3.2 */
3544 /* Note use of MYIMAGE_* since IMAGE_* are already defined in
3545 windows.h -- for the same purpose, but I want to know what I'm
3546 getting, here. */
3547 #define MYIMAGE_FILE_RELOCS_STRIPPED 0x0001
3548 #define MYIMAGE_FILE_EXECUTABLE_IMAGE 0x0002
3549 #define MYIMAGE_FILE_DLL 0x2000
3550 #define MYIMAGE_FILE_SYSTEM 0x1000
3551 #define MYIMAGE_FILE_BYTES_REVERSED_HI 0x8000
3552 #define MYIMAGE_FILE_BYTES_REVERSED_LO 0x0080
3553 #define MYIMAGE_FILE_32BIT_MACHINE 0x0100
3554
3555 /* From PE spec doc, section 5.4.2 and 5.4.4 */
3556 #define MYIMAGE_SYM_CLASS_EXTERNAL 2
3557 #define MYIMAGE_SYM_CLASS_STATIC 3
3558 #define MYIMAGE_SYM_UNDEFINED 0
3559
3560 /* From PE spec doc, section 4.1 */
3561 #define MYIMAGE_SCN_CNT_CODE 0x00000020
3562 #define MYIMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
3563 #define MYIMAGE_SCN_LNK_NRELOC_OVFL 0x01000000
3564
3565 /* From PE spec doc, section 5.2.1 */
3566 #define MYIMAGE_REL_I386_DIR32 0x0006
3567 #define MYIMAGE_REL_I386_REL32 0x0014
3568
3569 /* We assume file pointer is right at the
3570 beginning of COFF object.
3571 */
3572 static char *
3573 allocateImageAndTrampolines (
3574 #if defined(x86_64_HOST_ARCH)
3575 FILE* f, pathchar* arch_name, char* member_name,
3576 #endif
3577 int size )
3578 {
3579 char* image;
3580 #if defined(x86_64_HOST_ARCH)
3581 /* PeCoff contains number of symbols right in it's header, so
3582 we can reserve the room for symbolExtras right here. */
3583 COFF_header hdr;
3584 size_t n;
3585
3586 n = fread ( &hdr, 1, sizeof_COFF_header, f );
3587 if (n != sizeof( COFF_header ))
3588 barf("getNumberOfSymbols: error whilst reading `%s' header in `%S'",
3589 member_name, arch_name);
3590 fseek( f, -sizeof_COFF_header, SEEK_CUR );
3591
3592 /* We get back 8-byte aligned memory (is that guaranteed?), but
3593 the offsets to the sections within the file are all 4 mod 8
3594 (is that guaranteed?). We therefore need to offset the image
3595 by 4, so that all the pointers are 8-byte aligned, so that
3596 pointer tagging works. */
3597 /* For 32-bit case we don't need this, hence we use macro PEi386_IMAGE_OFFSET,
3598 which equals to 4 for 64-bit case and 0 for 32-bit case. */
3599 /* We allocate trampolines area for all symbols right behind
3600 image data, aligned on 8. */
3601 size = ((PEi386_IMAGE_OFFSET + size + 0x7) & ~0x7)
3602 + hdr.NumberOfSymbols * sizeof(SymbolExtra);
3603 #endif
3604 image = VirtualAlloc(NULL, size,
3605 MEM_RESERVE | MEM_COMMIT,
3606 PAGE_EXECUTE_READWRITE);
3607 return image + PEi386_IMAGE_OFFSET;
3608 }
3609
3610 /* We use myindex to calculate array addresses, rather than
3611 simply doing the normal subscript thing. That's because
3612 some of the above structs have sizes which are not
3613 a whole number of words. GCC rounds their sizes up to a
3614 whole number of words, which means that the address calcs
3615 arising from using normal C indexing or pointer arithmetic
3616 are just plain wrong. Sigh.
3617 */
3618 static UChar *
3619 myindex ( int scale, void* base, int index )
3620 {
3621 return
3622 ((UChar*)base) + scale * index;
3623 }
3624
3625
3626 static void
3627 printName ( UChar* name, UChar* strtab )
3628 {
3629 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3630 UInt32 strtab_offset = * (UInt32*)(name+4);
3631 debugBelch("%s", strtab + strtab_offset );
3632 } else {
3633 int i;
3634 for (i = 0; i < 8; i++) {
3635 if (name[i] == 0) break;
3636 debugBelch("%c", name[i] );
3637 }
3638 }
3639 }
3640
3641
3642 static void
3643 copyName ( UChar* name, UChar* strtab, UChar* dst, int dstSize )
3644 {
3645 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3646 UInt32 strtab_offset = * (UInt32*)(name+4);
3647 strncpy ( (char*)dst, (char*)strtab+strtab_offset, dstSize );
3648 dst[dstSize-1] = 0;
3649 } else {
3650 int i = 0;
3651 while (1) {
3652 if (i >= 8) break;
3653 if (name[i] == 0) break;
3654 dst[i] = name[i];
3655 i++;
3656 }
3657 dst[i] = 0;
3658 }
3659 }
3660
3661
3662 static UChar *
3663 cstring_from_COFF_symbol_name ( UChar* name, UChar* strtab )
3664 {
3665 UChar* newstr;
3666 /* If the string is longer than 8 bytes, look in the
3667 string table for it -- this will be correctly zero terminated.
3668 */
3669 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3670 UInt32 strtab_offset = * (UInt32*)(name+4);
3671 return ((UChar*)strtab) + strtab_offset;
3672 }
3673 /* Otherwise, if shorter than 8 bytes, return the original,
3674 which by defn is correctly terminated.
3675 */
3676 if (name[7]==0) return name;
3677 /* The annoying case: 8 bytes. Copy into a temporary
3678 (XXX which is never freed ...)
3679 */
3680 newstr = stgMallocBytes(9, "cstring_from_COFF_symbol_name");
3681 ASSERT(newstr);
3682 strncpy((char*)newstr,(char*)name,8);
3683 newstr[8] = 0;
3684 return newstr;
3685 }
3686
3687 /* Getting the name of a section is mildly tricky, so we make a
3688 function for it. Sadly, in one case we have to copy the string
3689 (when it is exactly 8 bytes long there's no trailing '\0'), so for
3690 consistency we *always* copy the string; the caller must free it
3691 */
3692 static char *
3693 cstring_from_section_name (UChar* name, UChar* strtab)
3694 {
3695 char *newstr;
3696
3697 if (name[0]=='/') {
3698 int strtab_offset = strtol((char*)name+1,NULL,10);
3699 int len = strlen(((char*)strtab) + strtab_offset);
3700
3701 newstr = stgMallocBytes(len+1, "cstring_from_section_symbol_name");
3702 strcpy((char*)newstr, (char*)((UChar*)strtab) + strtab_offset);
3703 return newstr;
3704 }
3705 else
3706 {
3707 newstr = stgMallocBytes(9, "cstring_from_section_symbol_name");
3708 ASSERT(newstr);
3709 strncpy((char*)newstr,(char*)name,8);
3710 newstr[8] = 0;
3711 return newstr;
3712 }
3713 }
3714
3715 /* Just compares the short names (first 8 chars) */
3716 static COFF_section *
3717 findPEi386SectionCalled ( ObjectCode* oc, UChar* name, UChar* strtab )
3718 {
3719 int i;
3720 rtsBool long_name = rtsFalse;
3721 COFF_header* hdr
3722 = (COFF_header*)(oc->image);
3723 COFF_section* sectab
3724 = (COFF_section*) (
3725 ((UChar*)(oc->image))
3726 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3727 );
3728 // String is longer than 8 bytes, swap in the proper
3729 // (NULL-terminated) version, and make a note that this
3730 // is a long name.
3731 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3732 UInt32 strtab_offset = * (UInt32*)(name+4);
3733 name = ((UChar*)strtab) + strtab_offset;
3734 long_name = rtsTrue;
3735 }
3736 for (i = 0; i < hdr->NumberOfSections; i++) {
3737 UChar* n1;
3738 UChar* n2;
3739 COFF_section* section_i
3740 = (COFF_section*)
3741 myindex ( sizeof_COFF_section, sectab, i );
3742 n1 = (UChar*) &(section_i->Name);
3743 n2 = name;
3744 // Long section names are prefixed with a slash, see
3745 // also cstring_from_section_name
3746 if (n1[0] == '/' && long_name) {
3747 // Long name check
3748 // We don't really want to make an assumption that the string
3749 // table indexes are the same, so we'll do a proper check.
3750 int n1_strtab_offset = strtol((char*)n1+1,NULL,10);
3751 n1 = (UChar*) (((char*)strtab) + n1_strtab_offset);
3752 if (0==strcmp((const char*)n1, (const char*)n2)) {
3753 return section_i;
3754 }
3755 } else if (n1[0] != '/' && !long_name) {
3756 // Short name check
3757 if (n1[0]==n2[0] && n1[1]==n2[1] && n1[2]==n2[2] &&
3758 n1[3]==n2[3] && n1[4]==n2[4] && n1[5]==n2[5] &&
3759 n1[6]==n2[6] && n1[7]==n2[7]) {
3760 return section_i;
3761 }
3762 } else {
3763 // guaranteed to mismatch, because we never attempt to link
3764 // in an executable where the section name may be truncated
3765 }
3766 }
3767
3768 return NULL;
3769 }
3770
3771 static void
3772 zapTrailingAtSign ( UChar* sym )
3773 {
3774 # define my_isdigit(c) ((c) >= '0' && (c) <= '9')
3775 int i, j;
3776 if (sym[0] == 0) return;
3777 i = 0;
3778 while (sym[i] != 0) i++;
3779 i--;
3780 j = i;
3781 while (j > 0 && my_isdigit(sym[j])) j--;
3782 if (j > 0 && sym[j] == '@' && j != i) sym[j] = 0;
3783 # undef my_isdigit
3784 }
3785
3786 static void *
3787 lookupSymbolInDLLs ( UChar *lbl )
3788 {
3789 OpenedDLL* o_dll;
3790 void *sym;
3791
3792 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
3793 /* debugBelch("look in %s for %s\n", o_dll->name, lbl); */
3794
3795 if (lbl[0] == '_') {
3796 /* HACK: if the name has an initial underscore, try stripping
3797 it off & look that up first. I've yet to verify whether there's
3798 a Rule that governs whether an initial '_' *should always* be
3799 stripped off when mapping from import lib name to the DLL name.
3800 */
3801 sym = GetProcAddress(o_dll->instance, (char*)(lbl+1));
3802 if (sym != NULL) {
3803 /*debugBelch("found %s in %s\n", lbl+1,o_dll->name);*/
3804 return sym;
3805 }
3806 }
3807
3808 /* Ticket #2283.
3809 Long description: http://support.microsoft.com/kb/132044
3810 tl;dr:
3811 If C/C++ compiler sees __declspec(dllimport) ... foo ...
3812 it generates call *__imp_foo, and __imp_foo here has exactly
3813 the same semantics as in __imp_foo = GetProcAddress(..., "foo")
3814 */
3815 if (sym == NULL && strncmp ((const char*)lbl, "__imp_", 6) == 0) {
3816 sym = GetProcAddress(o_dll->instance, (char*)(lbl+6));
3817 if (sym != NULL) {
3818 IndirectAddr* ret;
3819 ret = stgMallocBytes( sizeof(IndirectAddr), "lookupSymbolInDLLs" );
3820 ret->addr = sym;
3821 ret->next = indirects;
3822 indirects = ret;
3823 errorBelch("warning: %s from %S is linked instead of %s",
3824 (char*)(lbl+6), o_dll->name, (char*)lbl);
3825 return (void*) & ret->addr;
3826 }
3827 }
3828
3829 sym = GetProcAddress(o_dll->instance, (char*)lbl);
3830 if (sym != NULL) {
3831 /*debugBelch("found %s in %s\n", lbl,o_dll->name);*/
3832 return sym;
3833 }
3834 }
3835 return NULL;
3836 }
3837
3838
3839 static int
3840 ocVerifyImage_PEi386 ( ObjectCode* oc )
3841 {
3842 int i;
3843 UInt32 j, noRelocs;
3844 COFF_header* hdr;
3845 COFF_section* sectab;
3846 COFF_symbol* symtab;
3847 UChar* strtab;
3848 /* debugBelch("\nLOADING %s\n", oc->fileName); */
3849 hdr = (COFF_header*)(oc->image);
3850 sectab = (COFF_section*) (
3851 ((UChar*)(oc->image))
3852 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3853 );
3854 symtab = (COFF_symbol*) (
3855 ((UChar*)(oc->image))
3856 + hdr->PointerToSymbolTable
3857 );
3858 strtab = ((UChar*)symtab)
3859 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3860
3861 #if defined(i386_HOST_ARCH)
3862 if (hdr->Machine != 0x14c) {
3863 errorBelch("%" PATH_FMT ": Not x86 PEi386", oc->fileName);
3864 return 0;
3865 }
3866 #elif defined(x86_64_HOST_ARCH)
3867 if (hdr->Machine != 0x8664) {
3868 errorBelch("%" PATH_FMT ": Not x86_64 PEi386", oc->fileName);
3869 return 0;
3870 }
3871 #else
3872 errorBelch("PEi386 not supported on this arch");
3873 #endif
3874
3875 if (hdr->SizeOfOptionalHeader != 0) {
3876 errorBelch("%" PATH_FMT ": PEi386 with nonempty optional header", oc->fileName);
3877 return 0;
3878 }
3879 if ( /* (hdr->Characteristics & MYIMAGE_FILE_RELOCS_STRIPPED) || */
3880 (hdr->Characteristics & MYIMAGE_FILE_EXECUTABLE_IMAGE) ||
3881 (hdr->Characteristics & MYIMAGE_FILE_DLL) ||
3882 (hdr->Characteristics & MYIMAGE_FILE_SYSTEM) ) {
3883 errorBelch("%" PATH_FMT ": Not a PEi386 object file", oc->fileName);
3884 return 0;
3885 }
3886 if ( (hdr->Characteristics & MYIMAGE_FILE_BYTES_REVERSED_HI)
3887 /* || !(hdr->Characteristics & MYIMAGE_FILE_32BIT_MACHINE) */ ) {
3888 errorBelch("%" PATH_FMT ": Invalid PEi386 word size or endiannness: %d",
3889 oc->fileName,
3890 (int)(hdr->Characteristics));
3891 return 0;
3892 }
3893 /* If the string table size is way crazy, this might indicate that
3894 there are more than 64k relocations, despite claims to the
3895 contrary. Hence this test. */
3896 /* debugBelch("strtab size %d\n", * (UInt32*)strtab); */
3897 #if 0
3898 if ( (*(UInt32*)strtab) > 600000 ) {
3899 /* Note that 600k has no special significance other than being
3900 big enough to handle the almost-2MB-sized lumps that
3901 constitute HSwin32*.o. */
3902 debugBelch("PEi386 object has suspiciously large string table; > 64k relocs?");
3903 return 0;
3904 }
3905 #endif
3906
3907 /* No further verification after this point; only debug printing. */
3908 i = 0;
3909 IF_DEBUG(linker, i=1);
3910 if (i == 0) return 1;
3911
3912 debugBelch( "sectab offset = %" FMT_Int "\n", ((UChar*)sectab) - ((UChar*)hdr) );
3913 debugBelch( "symtab offset = %" FMT_Int "\n", ((UChar*)symtab) - ((UChar*)hdr) );
3914 debugBelch( "strtab offset = %" FMT_Int "\n", ((UChar*)strtab) - ((UChar*)hdr) );
3915
3916 debugBelch("\n" );
3917 debugBelch( "Machine: 0x%x\n", (UInt32)(hdr->Machine) );
3918 debugBelch( "# sections: %d\n", (UInt32)(hdr->NumberOfSections) );
3919 debugBelch( "time/date: 0x%x\n", (UInt32)(hdr->TimeDateStamp) );
3920 debugBelch( "symtab offset: %d\n", (UInt32)(hdr->PointerToSymbolTable) );
3921 debugBelch( "# symbols: %d\n", (UInt32)(hdr->NumberOfSymbols) );
3922 debugBelch( "sz of opt hdr: %d\n", (UInt32)(hdr->SizeOfOptionalHeader) );
3923 debugBelch( "characteristics: 0x%x\n", (UInt32)(hdr->Characteristics) );
3924
3925 /* Print the section table. */
3926 debugBelch("\n" );
3927 for (i = 0; i < hdr->NumberOfSections; i++) {
3928 COFF_reloc* reltab;
3929 COFF_section* sectab_i
3930 = (COFF_section*)
3931 myindex ( sizeof_COFF_section, sectab, i );
3932 debugBelch(
3933 "\n"
3934 "section %d\n"
3935 " name `",
3936 i
3937 );
3938 printName ( sectab_i->Name, strtab );
3939 debugBelch(
3940 "'\n"
3941 " vsize %d\n"
3942 " vaddr %d\n"
3943 " data sz %d\n"
3944 " data off %d\n"
3945 " num rel %d\n"
3946 " off rel %d\n"
3947 " ptr raw 0x%x\n",
3948 sectab_i->VirtualSize,
3949 sectab_i->VirtualAddress,
3950 sectab_i->SizeOfRawData,
3951 sectab_i->PointerToRawData,
3952 sectab_i->NumberOfRelocations,
3953 sectab_i->PointerToRelocations,
3954 sectab_i->PointerToRawData
3955 );
3956 reltab = (COFF_reloc*) (
3957 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
3958 );
3959
3960 if ( sectab_i->Characteristics & MYIMAGE_SCN_LNK_NRELOC_OVFL ) {
3961 /* If the relocation field (a short) has overflowed, the
3962 * real count can be found in the first reloc entry.
3963 *
3964 * See Section 4.1 (last para) of the PE spec (rev6.0).
3965 */
3966 COFF_reloc* rel = (COFF_reloc*)
3967 myindex ( sizeof_COFF_reloc, reltab, 0 );
3968 noRelocs = rel->VirtualAddress;
3969 j = 1;
3970 } else {
3971 noRelocs = sectab_i->NumberOfRelocations;
3972 j = 0;
3973 }
3974
3975 for (; j < noRelocs; j++) {
3976 COFF_symbol* sym;
3977 COFF_reloc* rel = (COFF_reloc*)
3978 myindex ( sizeof_COFF_reloc, reltab, j );
3979 debugBelch(
3980 " type 0x%-4x vaddr 0x%-8x name `",
3981 (UInt32)rel->Type,
3982 rel->VirtualAddress );
3983 sym = (COFF_symbol*)
3984 myindex ( sizeof_COFF_symbol, symtab, rel->SymbolTableIndex );
3985 /* Hmm..mysterious looking offset - what's it for? SOF */
3986 printName ( sym->Name, strtab -10 );
3987 debugBelch("'\n" );
3988 }
3989
3990 debugBelch("\n" );
3991 }
3992 debugBelch("\n" );
3993 debugBelch("string table has size 0x%x\n", * (UInt32*)strtab );
3994 debugBelch("---START of string table---\n");
3995 for (i = 4; i < *(Int32*)strtab; i++) {
3996 if (strtab[i] == 0)
3997 debugBelch("\n"); else
3998 debugBelch("%c", strtab[i] );
3999 }
4000 debugBelch("--- END of string table---\n");
4001
4002 debugBelch("\n" );
4003 i = 0;
4004 while (1) {
4005 COFF_symbol* symtab_i;
4006 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
4007 symtab_i = (COFF_symbol*)
4008 myindex ( sizeof_COFF_symbol, symtab, i );
4009 debugBelch(
4010 "symbol %d\n"
4011 " name `",
4012 i
4013 );
4014 printName ( symtab_i->Name, strtab );
4015 debugBelch(
4016 "'\n"
4017 " value 0x%x\n"
4018 " 1+sec# %d\n"
4019 " type 0x%x\n"
4020 " sclass 0x%x\n"
4021 " nAux %d\n",
4022 symtab_i->Value,
4023 (Int32)(symtab_i->SectionNumber),
4024 (UInt32)symtab_i->Type,
4025 (UInt32)symtab_i->StorageClass,
4026 (UInt32)symtab_i->NumberOfAuxSymbols
4027 );