Fix windows build failure.
[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 pathchar* arch_name, char* member_name,
221 #if defined(x86_64_HOST_ARCH)
222 FILE* f,
223 #endif
224 int size );
225 #if defined(x86_64_HOST_ARCH)
226 static int ocAllocateSymbolExtras_PEi386 ( ObjectCode* oc );
227 static size_t makeSymbolExtra_PEi386( ObjectCode* oc, size_t, char* symbol );
228 #define PEi386_IMAGE_OFFSET 4
229 #else
230 #define PEi386_IMAGE_OFFSET 0
231 #endif
232 #elif defined(OBJFORMAT_MACHO)
233 static int ocVerifyImage_MachO ( ObjectCode* oc );
234 static int ocGetNames_MachO ( ObjectCode* oc );
235 static int ocResolve_MachO ( ObjectCode* oc );
236 static int ocRunInit_MachO ( ObjectCode* oc );
237
238 #ifndef USE_MMAP
239 static int machoGetMisalignment( FILE * );
240 #endif
241 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
242 static int ocAllocateSymbolExtras_MachO ( ObjectCode* oc );
243 #endif
244 #ifdef powerpc_HOST_ARCH
245 static void machoInitSymbolsWithoutUnderscore( void );
246 #endif
247 #endif
248
249 static void freeProddableBlocks (ObjectCode *oc);
250
251 /* on x86_64 we have a problem with relocating symbol references in
252 * code that was compiled without -fPIC. By default, the small memory
253 * model is used, which assumes that symbol references can fit in a
254 * 32-bit slot. The system dynamic linker makes this work for
255 * references to shared libraries by either (a) allocating a jump
256 * table slot for code references, or (b) moving the symbol at load
257 * time (and copying its contents, if necessary) for data references.
258 *
259 * We unfortunately can't tell whether symbol references are to code
260 * or data. So for now we assume they are code (the vast majority
261 * are), and allocate jump-table slots. Unfortunately this will
262 * SILENTLY generate crashing code for data references. This hack is
263 * enabled by X86_64_ELF_NONPIC_HACK.
264 *
265 * One workaround is to use shared Haskell libraries. This is
266 * coming. Another workaround is to keep the static libraries but
267 * compile them with -fPIC, because that will generate PIC references
268 * to data which can be relocated. The PIC code is still too green to
269 * do this systematically, though.
270 *
271 * See bug #781
272 * See thread http://www.haskell.org/pipermail/cvs-ghc/2007-September/038458.html
273 *
274 * Naming Scheme for Symbol Macros
275 *
276 * SymI_*: symbol is internal to the RTS. It resides in an object
277 * file/library that is statically.
278 * SymE_*: symbol is external to the RTS library. It might be linked
279 * dynamically.
280 *
281 * Sym*_HasProto : the symbol prototype is imported in an include file
282 * or defined explicitly
283 * Sym*_NeedsProto: the symbol is undefined and we add a dummy
284 * default proto extern void sym(void);
285 */
286 #define X86_64_ELF_NONPIC_HACK 1
287
288 /* Link objects into the lower 2Gb on x86_64. GHC assumes the
289 * small memory model on this architecture (see gcc docs,
290 * -mcmodel=small).
291 *
292 * MAP_32BIT not available on OpenBSD/amd64
293 */
294 #if defined(x86_64_HOST_ARCH) && defined(MAP_32BIT)
295 #define TRY_MAP_32BIT MAP_32BIT
296 #else
297 #define TRY_MAP_32BIT 0
298 #endif
299
300 /*
301 * Due to the small memory model (see above), on x86_64 we have to map
302 * all our non-PIC object files into the low 2Gb of the address space
303 * (why 2Gb and not 4Gb? Because all addresses must be reachable
304 * using a 32-bit signed PC-relative offset). On Linux we can do this
305 * using the MAP_32BIT flag to mmap(), however on other OSs
306 * (e.g. *BSD, see #2063, and also on Linux inside Xen, see #2512), we
307 * can't do this. So on these systems, we have to pick a base address
308 * in the low 2Gb of the address space and try to allocate memory from
309 * there.
310 *
311 * We pick a default address based on the OS, but also make this
312 * configurable via an RTS flag (+RTS -xm)
313 */
314 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
315
316 #if defined(MAP_32BIT)
317 // Try to use MAP_32BIT
318 #define MMAP_32BIT_BASE_DEFAULT 0
319 #else
320 // A guess: 1Gb.
321 #define MMAP_32BIT_BASE_DEFAULT 0x40000000
322 #endif
323
324 static void *mmap_32bit_base = (void *)MMAP_32BIT_BASE_DEFAULT;
325 #endif
326
327 /* MAP_ANONYMOUS is MAP_ANON on some systems, e.g. OpenBSD */
328 #if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
329 #define MAP_ANONYMOUS MAP_ANON
330 #endif
331
332 /* -----------------------------------------------------------------------------
333 * Built-in symbols from the RTS
334 */
335
336 typedef struct _RtsSymbolVal {
337 char *lbl;
338 void *addr;
339 } RtsSymbolVal;
340
341 #define Maybe_Stable_Names SymI_HasProto(stg_mkWeakzh) \
342 SymI_HasProto(stg_mkWeakNoFinalizzerzh) \
343 SymI_HasProto(stg_addCFinalizzerToWeakzh) \
344 SymI_HasProto(stg_makeStableNamezh) \
345 SymI_HasProto(stg_finalizzeWeakzh)
346
347 #if !defined (mingw32_HOST_OS)
348 #define RTS_POSIX_ONLY_SYMBOLS \
349 SymI_HasProto(__hscore_get_saved_termios) \
350 SymI_HasProto(__hscore_set_saved_termios) \
351 SymI_HasProto(shutdownHaskellAndSignal) \
352 SymI_HasProto(signal_handlers) \
353 SymI_HasProto(stg_sig_install) \
354 SymI_HasProto(rtsTimerSignal) \
355 SymI_HasProto(atexit) \
356 SymI_NeedsProto(nocldstop)
357 #endif
358
359 #if defined (cygwin32_HOST_OS)
360 #define RTS_MINGW_ONLY_SYMBOLS /**/
361 /* Don't have the ability to read import libs / archives, so
362 * we have to stupidly list a lot of what libcygwin.a
363 * exports; sigh.
364 */
365 #define RTS_CYGWIN_ONLY_SYMBOLS \
366 SymI_HasProto(regfree) \
367 SymI_HasProto(regexec) \
368 SymI_HasProto(regerror) \
369 SymI_HasProto(regcomp) \
370 SymI_HasProto(__errno) \
371 SymI_HasProto(access) \
372 SymI_HasProto(chmod) \
373 SymI_HasProto(chdir) \
374 SymI_HasProto(close) \
375 SymI_HasProto(creat) \
376 SymI_HasProto(dup) \
377 SymI_HasProto(dup2) \
378 SymI_HasProto(fstat) \
379 SymI_HasProto(fcntl) \
380 SymI_HasProto(getcwd) \
381 SymI_HasProto(getenv) \
382 SymI_HasProto(lseek) \
383 SymI_HasProto(open) \
384 SymI_HasProto(fpathconf) \
385 SymI_HasProto(pathconf) \
386 SymI_HasProto(stat) \
387 SymI_HasProto(pow) \
388 SymI_HasProto(tanh) \
389 SymI_HasProto(cosh) \
390 SymI_HasProto(sinh) \
391 SymI_HasProto(atan) \
392 SymI_HasProto(acos) \
393 SymI_HasProto(asin) \
394 SymI_HasProto(tan) \
395 SymI_HasProto(cos) \
396 SymI_HasProto(sin) \
397 SymI_HasProto(exp) \
398 SymI_HasProto(log) \
399 SymI_HasProto(sqrt) \
400 SymI_HasProto(localtime_r) \
401 SymI_HasProto(gmtime_r) \
402 SymI_HasProto(mktime) \
403 SymI_NeedsProto(_imp___tzname) \
404 SymI_HasProto(gettimeofday) \
405 SymI_HasProto(timezone) \
406 SymI_HasProto(tcgetattr) \
407 SymI_HasProto(tcsetattr) \
408 SymI_HasProto(memcpy) \
409 SymI_HasProto(memmove) \
410 SymI_HasProto(realloc) \
411 SymI_HasProto(malloc) \
412 SymI_HasProto(free) \
413 SymI_HasProto(fork) \
414 SymI_HasProto(lstat) \
415 SymI_HasProto(isatty) \
416 SymI_HasProto(mkdir) \
417 SymI_HasProto(opendir) \
418 SymI_HasProto(readdir) \
419 SymI_HasProto(rewinddir) \
420 SymI_HasProto(closedir) \
421 SymI_HasProto(link) \
422 SymI_HasProto(mkfifo) \
423 SymI_HasProto(pipe) \
424 SymI_HasProto(read) \
425 SymI_HasProto(rename) \
426 SymI_HasProto(rmdir) \
427 SymI_HasProto(select) \
428 SymI_HasProto(system) \
429 SymI_HasProto(write) \
430 SymI_HasProto(strcmp) \
431 SymI_HasProto(strcpy) \
432 SymI_HasProto(strncpy) \
433 SymI_HasProto(strerror) \
434 SymI_HasProto(sigaddset) \
435 SymI_HasProto(sigemptyset) \
436 SymI_HasProto(sigprocmask) \
437 SymI_HasProto(umask) \
438 SymI_HasProto(uname) \
439 SymI_HasProto(unlink) \
440 SymI_HasProto(utime) \
441 SymI_HasProto(waitpid)
442
443 #elif defined(mingw32_HOST_OS)
444 #define RTS_POSIX_ONLY_SYMBOLS /**/
445 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
446
447 #if HAVE_GETTIMEOFDAY
448 #define RTS_MINGW_GETTIMEOFDAY_SYM SymI_NeedsProto(gettimeofday)
449 #else
450 #define RTS_MINGW_GETTIMEOFDAY_SYM /**/
451 #endif
452
453 #if HAVE___MINGW_VFPRINTF
454 #define RTS___MINGW_VFPRINTF_SYM SymI_HasProto(__mingw_vfprintf)
455 #else
456 #define RTS___MINGW_VFPRINTF_SYM /**/
457 #endif
458
459 #if defined(i386_HOST_ARCH)
460 #define RTS_WIN32_ONLY(X) X
461 #else
462 #define RTS_WIN32_ONLY(X) /**/
463 #endif
464
465 #if defined(x86_64_HOST_ARCH)
466 #define RTS_WIN64_ONLY(X) X
467 #else
468 #define RTS_WIN64_ONLY(X) /**/
469 #endif
470
471 /* These are statically linked from the mingw libraries into the ghc
472 executable, so we have to employ this hack. */
473 #define RTS_MINGW_ONLY_SYMBOLS \
474 SymI_HasProto(stg_asyncReadzh) \
475 SymI_HasProto(stg_asyncWritezh) \
476 SymI_HasProto(stg_asyncDoProczh) \
477 SymI_HasProto(getWin32ProgArgv) \
478 SymI_HasProto(setWin32ProgArgv) \
479 SymI_HasProto(memset) \
480 SymI_HasProto(inet_ntoa) \
481 SymI_HasProto(inet_addr) \
482 SymI_HasProto(htonl) \
483 SymI_HasProto(recvfrom) \
484 SymI_HasProto(listen) \
485 SymI_HasProto(bind) \
486 SymI_HasProto(shutdown) \
487 SymI_HasProto(connect) \
488 SymI_HasProto(htons) \
489 SymI_HasProto(ntohs) \
490 SymI_HasProto(getservbyname) \
491 SymI_HasProto(getservbyport) \
492 SymI_HasProto(getprotobynumber) \
493 SymI_HasProto(getprotobyname) \
494 SymI_HasProto(gethostbyname) \
495 SymI_HasProto(gethostbyaddr) \
496 SymI_HasProto(gethostname) \
497 SymI_HasProto(strcpy) \
498 SymI_HasProto(strncpy) \
499 SymI_HasProto(abort) \
500 RTS_WIN32_ONLY(SymI_NeedsProto(_alloca)) \
501 SymI_HasProto(isxdigit) \
502 SymI_HasProto(isupper) \
503 SymI_HasProto(ispunct) \
504 SymI_HasProto(islower) \
505 SymI_HasProto(isspace) \
506 SymI_HasProto(isprint) \
507 SymI_HasProto(isdigit) \
508 SymI_HasProto(iscntrl) \
509 SymI_HasProto(isalpha) \
510 SymI_HasProto(isalnum) \
511 SymI_HasProto(isascii) \
512 RTS___MINGW_VFPRINTF_SYM \
513 SymI_HasProto(strcmp) \
514 SymI_HasProto(memmove) \
515 SymI_HasProto(realloc) \
516 SymI_HasProto(malloc) \
517 SymI_HasProto(pow) \
518 SymI_HasProto(tanh) \
519 SymI_HasProto(cosh) \
520 SymI_HasProto(sinh) \
521 SymI_HasProto(atan) \
522 SymI_HasProto(acos) \
523 SymI_HasProto(asin) \
524 SymI_HasProto(tan) \
525 SymI_HasProto(cos) \
526 SymI_HasProto(sin) \
527 SymI_HasProto(exp) \
528 SymI_HasProto(log) \
529 SymI_HasProto(sqrt) \
530 SymI_HasProto(powf) \
531 SymI_HasProto(tanhf) \
532 SymI_HasProto(coshf) \
533 SymI_HasProto(sinhf) \
534 SymI_HasProto(atanf) \
535 SymI_HasProto(acosf) \
536 SymI_HasProto(asinf) \
537 SymI_HasProto(tanf) \
538 SymI_HasProto(cosf) \
539 SymI_HasProto(sinf) \
540 SymI_HasProto(expf) \
541 SymI_HasProto(logf) \
542 SymI_HasProto(sqrtf) \
543 SymI_HasProto(erf) \
544 SymI_HasProto(erfc) \
545 SymI_HasProto(erff) \
546 SymI_HasProto(erfcf) \
547 SymI_HasProto(memcpy) \
548 SymI_HasProto(rts_InstallConsoleEvent) \
549 SymI_HasProto(rts_ConsoleHandlerDone) \
550 SymI_NeedsProto(mktime) \
551 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___timezone)) \
552 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___tzname)) \
553 RTS_WIN32_ONLY(SymI_NeedsProto(_imp__tzname)) \
554 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___iob)) \
555 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___osver)) \
556 SymI_NeedsProto(localtime) \
557 SymI_NeedsProto(gmtime) \
558 SymI_NeedsProto(opendir) \
559 SymI_NeedsProto(readdir) \
560 SymI_NeedsProto(rewinddir) \
561 RTS_WIN32_ONLY(SymI_NeedsProto(_imp____mb_cur_max)) \
562 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___pctype)) \
563 RTS_WIN32_ONLY(SymI_NeedsProto(__chkstk)) \
564 RTS_WIN64_ONLY(SymI_NeedsProto(__imp___iob_func)) \
565 RTS_WIN64_ONLY(SymI_NeedsProto(___chkstk_ms)) \
566 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_localeconv)) \
567 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_islower)) \
568 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isspace)) \
569 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isxdigit)) \
570 RTS_WIN64_ONLY(SymI_HasProto(close)) \
571 RTS_WIN64_ONLY(SymI_HasProto(read)) \
572 RTS_WIN64_ONLY(SymI_HasProto(dup)) \
573 RTS_WIN64_ONLY(SymI_HasProto(dup2)) \
574 RTS_WIN64_ONLY(SymI_HasProto(write)) \
575 SymI_NeedsProto(getpid) \
576 RTS_WIN64_ONLY(SymI_HasProto(access)) \
577 SymI_HasProto(chmod) \
578 RTS_WIN64_ONLY(SymI_HasProto(creat)) \
579 RTS_WIN64_ONLY(SymI_HasProto(umask)) \
580 SymI_HasProto(unlink) \
581 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__errno)) \
582 RTS_WIN64_ONLY(SymI_NeedsProto(ftruncate64)) \
583 RTS_WIN64_ONLY(SymI_HasProto(setmode)) \
584 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wstat64)) \
585 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__fstat64)) \
586 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wsopen)) \
587 RTS_WIN64_ONLY(SymI_HasProto(__imp__environ)) \
588 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileAttributesA)) \
589 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileInformationByHandle)) \
590 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileType)) \
591 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetLastError)) \
592 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceFrequency)) \
593 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceCounter)) \
594 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetTickCount)) \
595 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WaitForSingleObject)) \
596 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekConsoleInputA)) \
597 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ReadConsoleInputA)) \
598 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekNamedPipe)) \
599 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__isatty)) \
600 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_select)) \
601 RTS_WIN64_ONLY(SymI_HasProto(isatty)) \
602 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__get_osfhandle)) \
603 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetConsoleMode)) \
604 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetConsoleMode)) \
605 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FlushConsoleInputBuffer)) \
606 RTS_WIN64_ONLY(SymI_HasProto(free)) \
607 RTS_WIN64_ONLY(SymI_NeedsProto(raise)) \
608 RTS_WIN64_ONLY(SymI_NeedsProto(_getpid)) \
609 RTS_WIN64_ONLY(SymI_HasProto(getc)) \
610 RTS_WIN64_ONLY(SymI_HasProto(ungetc)) \
611 RTS_WIN64_ONLY(SymI_HasProto(puts)) \
612 RTS_WIN64_ONLY(SymI_HasProto(putc)) \
613 RTS_WIN64_ONLY(SymI_HasProto(putchar)) \
614 RTS_WIN64_ONLY(SymI_HasProto(fputc)) \
615 RTS_WIN64_ONLY(SymI_HasProto(fread)) \
616 RTS_WIN64_ONLY(SymI_HasProto(fwrite)) \
617 RTS_WIN64_ONLY(SymI_HasProto(ferror)) \
618 RTS_WIN64_ONLY(SymI_HasProto(printf)) \
619 RTS_WIN64_ONLY(SymI_HasProto(fprintf)) \
620 RTS_WIN64_ONLY(SymI_HasProto(sprintf)) \
621 RTS_WIN64_ONLY(SymI_HasProto(vsprintf)) \
622 RTS_WIN64_ONLY(SymI_HasProto(sscanf)) \
623 RTS_WIN64_ONLY(SymI_HasProto(ldexp)) \
624 RTS_WIN64_ONLY(SymI_HasProto(strlen)) \
625 RTS_WIN64_ONLY(SymI_HasProto(strnlen)) \
626 RTS_WIN64_ONLY(SymI_HasProto(strchr)) \
627 RTS_WIN64_ONLY(SymI_HasProto(strtol)) \
628 RTS_WIN64_ONLY(SymI_HasProto(strerror)) \
629 RTS_WIN64_ONLY(SymI_HasProto(memchr)) \
630 RTS_WIN64_ONLY(SymI_HasProto(memcmp)) \
631 RTS_WIN64_ONLY(SymI_HasProto(wcscpy)) \
632 RTS_WIN64_ONLY(SymI_HasProto(wcslen)) \
633 RTS_WIN64_ONLY(SymI_HasProto(_lseeki64)) \
634 RTS_WIN64_ONLY(SymI_HasProto(_wchmod)) \
635 RTS_WIN64_ONLY(SymI_HasProto(closesocket)) \
636 RTS_WIN64_ONLY(SymI_HasProto(send)) \
637 RTS_WIN64_ONLY(SymI_HasProto(recv)) \
638 RTS_WIN64_ONLY(SymI_HasProto(bsearch)) \
639 RTS_WIN64_ONLY(SymI_HasProto(CommandLineToArgvW)) \
640 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmap)) \
641 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmapIndirect)) \
642 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleBitmap)) \
643 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBPatternBrushPt)) \
644 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBitmap)) \
645 RTS_WIN64_ONLY(SymI_HasProto(SetBitmapDimensionEx)) \
646 RTS_WIN64_ONLY(SymI_HasProto(GetBitmapDimensionEx)) \
647 RTS_WIN64_ONLY(SymI_HasProto(GetStockObject)) \
648 RTS_WIN64_ONLY(SymI_HasProto(GetObjectW)) \
649 RTS_WIN64_ONLY(SymI_HasProto(DeleteObject)) \
650 RTS_WIN64_ONLY(SymI_HasProto(SetDIBits)) \
651 RTS_WIN64_ONLY(SymI_HasProto(GetDIBits)) \
652 RTS_WIN64_ONLY(SymI_HasProto(CreateSolidBrush)) \
653 RTS_WIN64_ONLY(SymI_HasProto(CreateHatchBrush)) \
654 RTS_WIN64_ONLY(SymI_HasProto(CreatePatternBrush)) \
655 RTS_WIN64_ONLY(SymI_HasProto(CreateFontW)) \
656 RTS_WIN64_ONLY(SymI_HasProto(AngleArc)) \
657 RTS_WIN64_ONLY(SymI_HasProto(Arc)) \
658 RTS_WIN64_ONLY(SymI_HasProto(ArcTo)) \
659 RTS_WIN64_ONLY(SymI_HasProto(BeginPath)) \
660 RTS_WIN64_ONLY(SymI_HasProto(BitBlt)) \
661 RTS_WIN64_ONLY(SymI_HasProto(CancelDC)) \
662 RTS_WIN64_ONLY(SymI_HasProto(Chord)) \
663 RTS_WIN64_ONLY(SymI_HasProto(CloseFigure)) \
664 RTS_WIN64_ONLY(SymI_HasProto(CombineRgn)) \
665 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleDC)) \
666 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgn)) \
667 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgnIndirect)) \
668 RTS_WIN64_ONLY(SymI_HasProto(CreatePen)) \
669 RTS_WIN64_ONLY(SymI_HasProto(CreatePolygonRgn)) \
670 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgn)) \
671 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgnIndirect)) \
672 RTS_WIN64_ONLY(SymI_HasProto(CreateRoundRectRgn)) \
673 RTS_WIN64_ONLY(SymI_HasProto(DeleteDC)) \
674 RTS_WIN64_ONLY(SymI_HasProto(Ellipse)) \
675 RTS_WIN64_ONLY(SymI_HasProto(EndPath)) \
676 RTS_WIN64_ONLY(SymI_HasProto(EqualRgn)) \
677 RTS_WIN64_ONLY(SymI_HasProto(ExtSelectClipRgn)) \
678 RTS_WIN64_ONLY(SymI_HasProto(FillPath)) \
679 RTS_WIN64_ONLY(SymI_HasProto(FillRgn)) \
680 RTS_WIN64_ONLY(SymI_HasProto(FlattenPath)) \
681 RTS_WIN64_ONLY(SymI_HasProto(FrameRgn)) \
682 RTS_WIN64_ONLY(SymI_HasProto(GetArcDirection)) \
683 RTS_WIN64_ONLY(SymI_HasProto(GetBkColor)) \
684 RTS_WIN64_ONLY(SymI_HasProto(GetBkMode)) \
685 RTS_WIN64_ONLY(SymI_HasProto(GetBrushOrgEx)) \
686 RTS_WIN64_ONLY(SymI_HasProto(GetCurrentObject)) \
687 RTS_WIN64_ONLY(SymI_HasProto(GetDCOrgEx)) \
688 RTS_WIN64_ONLY(SymI_HasProto(GetGraphicsMode)) \
689 RTS_WIN64_ONLY(SymI_HasProto(GetMiterLimit)) \
690 RTS_WIN64_ONLY(SymI_HasProto(GetPolyFillMode)) \
691 RTS_WIN64_ONLY(SymI_HasProto(GetRgnBox)) \
692 RTS_WIN64_ONLY(SymI_HasProto(GetStretchBltMode)) \
693 RTS_WIN64_ONLY(SymI_HasProto(GetTextAlign)) \
694 RTS_WIN64_ONLY(SymI_HasProto(GetTextCharacterExtra)) \
695 RTS_WIN64_ONLY(SymI_HasProto(GetTextColor)) \
696 RTS_WIN64_ONLY(SymI_HasProto(GetTextExtentPoint32W)) \
697 RTS_WIN64_ONLY(SymI_HasProto(InvertRgn)) \
698 RTS_WIN64_ONLY(SymI_HasProto(LineTo)) \
699 RTS_WIN64_ONLY(SymI_HasProto(MaskBlt)) \
700 RTS_WIN64_ONLY(SymI_HasProto(MoveToEx)) \
701 RTS_WIN64_ONLY(SymI_HasProto(OffsetRgn)) \
702 RTS_WIN64_ONLY(SymI_HasProto(PaintRgn)) \
703 RTS_WIN64_ONLY(SymI_HasProto(PathToRegion)) \
704 RTS_WIN64_ONLY(SymI_HasProto(Pie)) \
705 RTS_WIN64_ONLY(SymI_HasProto(PlgBlt)) \
706 RTS_WIN64_ONLY(SymI_HasProto(PolyBezier)) \
707 RTS_WIN64_ONLY(SymI_HasProto(PolyBezierTo)) \
708 RTS_WIN64_ONLY(SymI_HasProto(Polygon)) \
709 RTS_WIN64_ONLY(SymI_HasProto(Polyline)) \
710 RTS_WIN64_ONLY(SymI_HasProto(PolylineTo)) \
711 RTS_WIN64_ONLY(SymI_HasProto(PtInRegion)) \
712 RTS_WIN64_ONLY(SymI_HasProto(Rectangle)) \
713 RTS_WIN64_ONLY(SymI_HasProto(RectInRegion)) \
714 RTS_WIN64_ONLY(SymI_HasProto(RestoreDC)) \
715 RTS_WIN64_ONLY(SymI_HasProto(RoundRect)) \
716 RTS_WIN64_ONLY(SymI_HasProto(SaveDC)) \
717 RTS_WIN64_ONLY(SymI_HasProto(SelectClipPath)) \
718 RTS_WIN64_ONLY(SymI_HasProto(SelectClipRgn)) \
719 RTS_WIN64_ONLY(SymI_HasProto(SelectObject)) \
720 RTS_WIN64_ONLY(SymI_HasProto(SelectPalette)) \
721 RTS_WIN64_ONLY(SymI_HasProto(SetArcDirection)) \
722 RTS_WIN64_ONLY(SymI_HasProto(SetBkColor)) \
723 RTS_WIN64_ONLY(SymI_HasProto(SetBkMode)) \
724 RTS_WIN64_ONLY(SymI_HasProto(SetBrushOrgEx)) \
725 RTS_WIN64_ONLY(SymI_HasProto(SetGraphicsMode)) \
726 RTS_WIN64_ONLY(SymI_HasProto(SetMiterLimit)) \
727 RTS_WIN64_ONLY(SymI_HasProto(SetPolyFillMode)) \
728 RTS_WIN64_ONLY(SymI_HasProto(SetStretchBltMode)) \
729 RTS_WIN64_ONLY(SymI_HasProto(SetTextAlign)) \
730 RTS_WIN64_ONLY(SymI_HasProto(SetTextCharacterExtra)) \
731 RTS_WIN64_ONLY(SymI_HasProto(SetTextColor)) \
732 RTS_WIN64_ONLY(SymI_HasProto(StretchBlt)) \
733 RTS_WIN64_ONLY(SymI_HasProto(StrokeAndFillPath)) \
734 RTS_WIN64_ONLY(SymI_HasProto(StrokePath)) \
735 RTS_WIN64_ONLY(SymI_HasProto(TextOutW)) \
736 RTS_WIN64_ONLY(SymI_HasProto(timeGetTime)) \
737 RTS_WIN64_ONLY(SymI_HasProto(WidenPath)) \
738 RTS_WIN64_ONLY(SymI_HasProto(GetFileSecurityW)) \
739 RTS_WIN64_ONLY(SymI_HasProto(RegCloseKey)) \
740 RTS_WIN64_ONLY(SymI_HasProto(RegConnectRegistryW)) \
741 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyExW)) \
742 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyW)) \
743 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteKeyW)) \
744 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteValueW)) \
745 RTS_WIN64_ONLY(SymI_HasProto(RegEnumKeyW)) \
746 RTS_WIN64_ONLY(SymI_HasProto(RegEnumValueW)) \
747 RTS_WIN64_ONLY(SymI_HasProto(RegFlushKey)) \
748 RTS_WIN64_ONLY(SymI_HasProto(RegLoadKeyW)) \
749 RTS_WIN64_ONLY(SymI_HasProto(RegNotifyChangeKeyValue)) \
750 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyExW)) \
751 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyW)) \
752 RTS_WIN64_ONLY(SymI_HasProto(RegQueryInfoKeyW)) \
753 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueExW)) \
754 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueW)) \
755 RTS_WIN64_ONLY(SymI_HasProto(RegReplaceKeyW)) \
756 RTS_WIN64_ONLY(SymI_HasProto(RegRestoreKeyW)) \
757 RTS_WIN64_ONLY(SymI_HasProto(RegSaveKeyW)) \
758 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueExW)) \
759 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueW)) \
760 RTS_WIN64_ONLY(SymI_HasProto(RegUnLoadKeyW)) \
761 RTS_WIN64_ONLY(SymI_NeedsProto(SHGetFolderPathW)) \
762 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetWindowLongPtrW)) \
763 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetWindowLongPtrW)) \
764 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_MenuItemFromPoint)) \
765 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPoint)) \
766 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPointEx)) \
767 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DeleteObject)) \
768 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_UnmapViewOfFile)) \
769 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CloseHandle)) \
770 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FreeLibrary)) \
771 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetMessageW)) \
772 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TranslateMessage)) \
773 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DispatchMessageW)) \
774 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DefWindowProcW)) \
775 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetDIBits)) \
776 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalAlloc)) \
777 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalFree)) \
778 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateFileW)) \
779 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WriteFile)) \
780 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateCompatibleBitmap)) \
781 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SelectObject)) \
782 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_Polygon)) \
783 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FormatMessageW)) \
784 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__localtime64)) \
785 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__tzname)) \
786 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__timezone)) \
787 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreatePipe)) \
788 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetHandleInformation)) \
789 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetStdHandle)) \
790 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetCurrentProcess)) \
791 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DuplicateHandle)) \
792 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateProcessW)) \
793 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TerminateProcess)) \
794 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__open_osfhandle)) \
795 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetExitCodeProcess)) \
796 RTS_MINGW_GETTIMEOFDAY_SYM \
797 SymI_NeedsProto(closedir)
798
799 #else
800 #define RTS_MINGW_ONLY_SYMBOLS /**/
801 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
802 #endif
803
804
805 #if defined(darwin_HOST_OS) && HAVE_PRINTF_LDBLSTUB
806 #define RTS_DARWIN_ONLY_SYMBOLS \
807 SymI_NeedsProto(asprintf$LDBLStub) \
808 SymI_NeedsProto(err$LDBLStub) \
809 SymI_NeedsProto(errc$LDBLStub) \
810 SymI_NeedsProto(errx$LDBLStub) \
811 SymI_NeedsProto(fprintf$LDBLStub) \
812 SymI_NeedsProto(fscanf$LDBLStub) \
813 SymI_NeedsProto(fwprintf$LDBLStub) \
814 SymI_NeedsProto(fwscanf$LDBLStub) \
815 SymI_NeedsProto(printf$LDBLStub) \
816 SymI_NeedsProto(scanf$LDBLStub) \
817 SymI_NeedsProto(snprintf$LDBLStub) \
818 SymI_NeedsProto(sprintf$LDBLStub) \
819 SymI_NeedsProto(sscanf$LDBLStub) \
820 SymI_NeedsProto(strtold$LDBLStub) \
821 SymI_NeedsProto(swprintf$LDBLStub) \
822 SymI_NeedsProto(swscanf$LDBLStub) \
823 SymI_NeedsProto(syslog$LDBLStub) \
824 SymI_NeedsProto(vasprintf$LDBLStub) \
825 SymI_NeedsProto(verr$LDBLStub) \
826 SymI_NeedsProto(verrc$LDBLStub) \
827 SymI_NeedsProto(verrx$LDBLStub) \
828 SymI_NeedsProto(vfprintf$LDBLStub) \
829 SymI_NeedsProto(vfscanf$LDBLStub) \
830 SymI_NeedsProto(vfwprintf$LDBLStub) \
831 SymI_NeedsProto(vfwscanf$LDBLStub) \
832 SymI_NeedsProto(vprintf$LDBLStub) \
833 SymI_NeedsProto(vscanf$LDBLStub) \
834 SymI_NeedsProto(vsnprintf$LDBLStub) \
835 SymI_NeedsProto(vsprintf$LDBLStub) \
836 SymI_NeedsProto(vsscanf$LDBLStub) \
837 SymI_NeedsProto(vswprintf$LDBLStub) \
838 SymI_NeedsProto(vswscanf$LDBLStub) \
839 SymI_NeedsProto(vsyslog$LDBLStub) \
840 SymI_NeedsProto(vwarn$LDBLStub) \
841 SymI_NeedsProto(vwarnc$LDBLStub) \
842 SymI_NeedsProto(vwarnx$LDBLStub) \
843 SymI_NeedsProto(vwprintf$LDBLStub) \
844 SymI_NeedsProto(vwscanf$LDBLStub) \
845 SymI_NeedsProto(warn$LDBLStub) \
846 SymI_NeedsProto(warnc$LDBLStub) \
847 SymI_NeedsProto(warnx$LDBLStub) \
848 SymI_NeedsProto(wcstold$LDBLStub) \
849 SymI_NeedsProto(wprintf$LDBLStub) \
850 SymI_NeedsProto(wscanf$LDBLStub)
851 #else
852 #define RTS_DARWIN_ONLY_SYMBOLS
853 #endif
854
855 #ifndef SMP
856 # define MAIN_CAP_SYM SymI_HasProto(MainCapability)
857 #else
858 # define MAIN_CAP_SYM
859 #endif
860
861 #if !defined(mingw32_HOST_OS)
862 #define RTS_USER_SIGNALS_SYMBOLS \
863 SymI_HasProto(setIOManagerControlFd) \
864 SymI_HasProto(setTimerManagerControlFd) \
865 SymI_HasProto(setIOManagerWakeupFd) \
866 SymI_HasProto(ioManagerWakeup) \
867 SymI_HasProto(blockUserSignals) \
868 SymI_HasProto(unblockUserSignals)
869 #else
870 #define RTS_USER_SIGNALS_SYMBOLS \
871 SymI_HasProto(ioManagerWakeup) \
872 SymI_HasProto(sendIOManagerEvent) \
873 SymI_HasProto(readIOManagerEvent) \
874 SymI_HasProto(getIOManagerEvent) \
875 SymI_HasProto(console_handler)
876 #endif
877
878 #define RTS_LIBFFI_SYMBOLS \
879 SymE_NeedsProto(ffi_prep_cif) \
880 SymE_NeedsProto(ffi_call) \
881 SymE_NeedsProto(ffi_type_void) \
882 SymE_NeedsProto(ffi_type_float) \
883 SymE_NeedsProto(ffi_type_double) \
884 SymE_NeedsProto(ffi_type_sint64) \
885 SymE_NeedsProto(ffi_type_uint64) \
886 SymE_NeedsProto(ffi_type_sint32) \
887 SymE_NeedsProto(ffi_type_uint32) \
888 SymE_NeedsProto(ffi_type_sint16) \
889 SymE_NeedsProto(ffi_type_uint16) \
890 SymE_NeedsProto(ffi_type_sint8) \
891 SymE_NeedsProto(ffi_type_uint8) \
892 SymE_NeedsProto(ffi_type_pointer)
893
894 #ifdef TABLES_NEXT_TO_CODE
895 #define RTS_RET_SYMBOLS /* nothing */
896 #else
897 #define RTS_RET_SYMBOLS \
898 SymI_HasProto(stg_enter_ret) \
899 SymI_HasProto(stg_gc_fun_ret) \
900 SymI_HasProto(stg_ap_v_ret) \
901 SymI_HasProto(stg_ap_f_ret) \
902 SymI_HasProto(stg_ap_d_ret) \
903 SymI_HasProto(stg_ap_l_ret) \
904 SymI_HasProto(stg_ap_v16_ret) \
905 SymI_HasProto(stg_ap_v32_ret) \
906 SymI_HasProto(stg_ap_v64_ret) \
907 SymI_HasProto(stg_ap_n_ret) \
908 SymI_HasProto(stg_ap_p_ret) \
909 SymI_HasProto(stg_ap_pv_ret) \
910 SymI_HasProto(stg_ap_pp_ret) \
911 SymI_HasProto(stg_ap_ppv_ret) \
912 SymI_HasProto(stg_ap_ppp_ret) \
913 SymI_HasProto(stg_ap_pppv_ret) \
914 SymI_HasProto(stg_ap_pppp_ret) \
915 SymI_HasProto(stg_ap_ppppp_ret) \
916 SymI_HasProto(stg_ap_pppppp_ret)
917 #endif
918
919 /* Modules compiled with -ticky may mention ticky counters */
920 /* This list should marry up with the one in $(TOP)/includes/stg/Ticky.h */
921 #define RTS_TICKY_SYMBOLS \
922 SymI_NeedsProto(ticky_entry_ctrs) \
923 SymI_NeedsProto(top_ct) \
924 \
925 SymI_HasProto(ENT_VIA_NODE_ctr) \
926 SymI_HasProto(ENT_STATIC_THK_SINGLE_ctr) \
927 SymI_HasProto(ENT_STATIC_THK_MANY_ctr) \
928 SymI_HasProto(ENT_DYN_THK_SINGLE_ctr) \
929 SymI_HasProto(ENT_DYN_THK_MANY_ctr) \
930 SymI_HasProto(ENT_STATIC_FUN_DIRECT_ctr) \
931 SymI_HasProto(ENT_DYN_FUN_DIRECT_ctr) \
932 SymI_HasProto(ENT_STATIC_CON_ctr) \
933 SymI_HasProto(ENT_DYN_CON_ctr) \
934 SymI_HasProto(ENT_STATIC_IND_ctr) \
935 SymI_HasProto(ENT_DYN_IND_ctr) \
936 SymI_HasProto(ENT_PERM_IND_ctr) \
937 SymI_HasProto(ENT_PAP_ctr) \
938 SymI_HasProto(ENT_AP_ctr) \
939 SymI_HasProto(ENT_AP_STACK_ctr) \
940 SymI_HasProto(ENT_BH_ctr) \
941 SymI_HasProto(ENT_LNE_ctr) \
942 SymI_HasProto(UNKNOWN_CALL_ctr) \
943 SymI_HasProto(SLOW_CALL_fast_v16_ctr) \
944 SymI_HasProto(SLOW_CALL_fast_v_ctr) \
945 SymI_HasProto(SLOW_CALL_fast_f_ctr) \
946 SymI_HasProto(SLOW_CALL_fast_d_ctr) \
947 SymI_HasProto(SLOW_CALL_fast_l_ctr) \
948 SymI_HasProto(SLOW_CALL_fast_n_ctr) \
949 SymI_HasProto(SLOW_CALL_fast_p_ctr) \
950 SymI_HasProto(SLOW_CALL_fast_pv_ctr) \
951 SymI_HasProto(SLOW_CALL_fast_pp_ctr) \
952 SymI_HasProto(SLOW_CALL_fast_ppv_ctr) \
953 SymI_HasProto(SLOW_CALL_fast_ppp_ctr) \
954 SymI_HasProto(SLOW_CALL_fast_pppv_ctr) \
955 SymI_HasProto(SLOW_CALL_fast_pppp_ctr) \
956 SymI_HasProto(SLOW_CALL_fast_ppppp_ctr) \
957 SymI_HasProto(SLOW_CALL_fast_pppppp_ctr) \
958 SymI_HasProto(VERY_SLOW_CALL_ctr) \
959 SymI_HasProto(ticky_slow_call_unevald) \
960 SymI_HasProto(SLOW_CALL_ctr) \
961 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_ctr) \
962 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_CHUNKS_ctr) \
963 SymI_HasProto(KNOWN_CALL_ctr) \
964 SymI_HasProto(KNOWN_CALL_TOO_FEW_ARGS_ctr) \
965 SymI_HasProto(KNOWN_CALL_EXTRA_ARGS_ctr) \
966 SymI_HasProto(SLOW_CALL_FUN_TOO_FEW_ctr) \
967 SymI_HasProto(SLOW_CALL_FUN_CORRECT_ctr) \
968 SymI_HasProto(SLOW_CALL_FUN_TOO_MANY_ctr) \
969 SymI_HasProto(SLOW_CALL_PAP_TOO_FEW_ctr) \
970 SymI_HasProto(SLOW_CALL_PAP_CORRECT_ctr) \
971 SymI_HasProto(SLOW_CALL_PAP_TOO_MANY_ctr) \
972 SymI_HasProto(SLOW_CALL_UNEVALD_ctr) \
973 SymI_HasProto(UPDF_OMITTED_ctr) \
974 SymI_HasProto(UPDF_PUSHED_ctr) \
975 SymI_HasProto(CATCHF_PUSHED_ctr) \
976 SymI_HasProto(UPDF_RCC_PUSHED_ctr) \
977 SymI_HasProto(UPDF_RCC_OMITTED_ctr) \
978 SymI_HasProto(UPD_SQUEEZED_ctr) \
979 SymI_HasProto(UPD_CON_IN_NEW_ctr) \
980 SymI_HasProto(UPD_CON_IN_PLACE_ctr) \
981 SymI_HasProto(UPD_PAP_IN_NEW_ctr) \
982 SymI_HasProto(UPD_PAP_IN_PLACE_ctr) \
983 SymI_HasProto(ALLOC_HEAP_ctr) \
984 SymI_HasProto(ALLOC_HEAP_tot) \
985 SymI_HasProto(HEAP_CHK_ctr) \
986 SymI_HasProto(STK_CHK_ctr) \
987 SymI_HasProto(ALLOC_RTS_ctr) \
988 SymI_HasProto(ALLOC_RTS_tot) \
989 SymI_HasProto(ALLOC_FUN_ctr) \
990 SymI_HasProto(ALLOC_FUN_adm) \
991 SymI_HasProto(ALLOC_FUN_gds) \
992 SymI_HasProto(ALLOC_FUN_slp) \
993 SymI_HasProto(UPD_NEW_IND_ctr) \
994 SymI_HasProto(UPD_NEW_PERM_IND_ctr) \
995 SymI_HasProto(UPD_OLD_IND_ctr) \
996 SymI_HasProto(UPD_OLD_PERM_IND_ctr) \
997 SymI_HasProto(UPD_CAF_BH_UPDATABLE_ctr) \
998 SymI_HasProto(UPD_CAF_BH_SINGLE_ENTRY_ctr) \
999 SymI_HasProto(GC_SEL_ABANDONED_ctr) \
1000 SymI_HasProto(GC_SEL_MINOR_ctr) \
1001 SymI_HasProto(GC_SEL_MAJOR_ctr) \
1002 SymI_HasProto(GC_FAILED_PROMOTION_ctr) \
1003 SymI_HasProto(ALLOC_UP_THK_ctr) \
1004 SymI_HasProto(ALLOC_SE_THK_ctr) \
1005 SymI_HasProto(ALLOC_THK_adm) \
1006 SymI_HasProto(ALLOC_THK_gds) \
1007 SymI_HasProto(ALLOC_THK_slp) \
1008 SymI_HasProto(ALLOC_CON_ctr) \
1009 SymI_HasProto(ALLOC_CON_adm) \
1010 SymI_HasProto(ALLOC_CON_gds) \
1011 SymI_HasProto(ALLOC_CON_slp) \
1012 SymI_HasProto(ALLOC_TUP_ctr) \
1013 SymI_HasProto(ALLOC_TUP_adm) \
1014 SymI_HasProto(ALLOC_TUP_gds) \
1015 SymI_HasProto(ALLOC_TUP_slp) \
1016 SymI_HasProto(ALLOC_BH_ctr) \
1017 SymI_HasProto(ALLOC_BH_adm) \
1018 SymI_HasProto(ALLOC_BH_gds) \
1019 SymI_HasProto(ALLOC_BH_slp) \
1020 SymI_HasProto(ALLOC_PRIM_ctr) \
1021 SymI_HasProto(ALLOC_PRIM_adm) \
1022 SymI_HasProto(ALLOC_PRIM_gds) \
1023 SymI_HasProto(ALLOC_PRIM_slp) \
1024 SymI_HasProto(ALLOC_PAP_ctr) \
1025 SymI_HasProto(ALLOC_PAP_adm) \
1026 SymI_HasProto(ALLOC_PAP_gds) \
1027 SymI_HasProto(ALLOC_PAP_slp) \
1028 SymI_HasProto(ALLOC_TSO_ctr) \
1029 SymI_HasProto(ALLOC_TSO_adm) \
1030 SymI_HasProto(ALLOC_TSO_gds) \
1031 SymI_HasProto(ALLOC_TSO_slp) \
1032 SymI_HasProto(RET_NEW_ctr) \
1033 SymI_HasProto(RET_OLD_ctr) \
1034 SymI_HasProto(RET_UNBOXED_TUP_ctr) \
1035 SymI_HasProto(RET_SEMI_loads_avoided)
1036
1037
1038 // On most platforms, the garbage collector rewrites references
1039 // to small integer and char objects to a set of common, shared ones.
1040 //
1041 // We don't do this when compiling to Windows DLLs at the moment because
1042 // it doesn't support cross package data references well.
1043 //
1044 #if defined(COMPILING_WINDOWS_DLL)
1045 #define RTS_INTCHAR_SYMBOLS
1046 #else
1047 #define RTS_INTCHAR_SYMBOLS \
1048 SymI_HasProto(stg_CHARLIKE_closure) \
1049 SymI_HasProto(stg_INTLIKE_closure)
1050 #endif
1051
1052
1053 #define RTS_SYMBOLS \
1054 Maybe_Stable_Names \
1055 RTS_TICKY_SYMBOLS \
1056 SymI_HasProto(StgReturn) \
1057 SymI_HasProto(stg_gc_noregs) \
1058 SymI_HasProto(stg_ret_v_info) \
1059 SymI_HasProto(stg_ret_p_info) \
1060 SymI_HasProto(stg_ret_n_info) \
1061 SymI_HasProto(stg_ret_f_info) \
1062 SymI_HasProto(stg_ret_d_info) \
1063 SymI_HasProto(stg_ret_l_info) \
1064 SymI_HasProto(stg_gc_prim_p) \
1065 SymI_HasProto(stg_gc_prim_pp) \
1066 SymI_HasProto(stg_gc_prim_n) \
1067 SymI_HasProto(stg_enter_info) \
1068 SymI_HasProto(__stg_gc_enter_1) \
1069 SymI_HasProto(stg_gc_unpt_r1) \
1070 SymI_HasProto(stg_gc_unbx_r1) \
1071 SymI_HasProto(stg_gc_f1) \
1072 SymI_HasProto(stg_gc_d1) \
1073 SymI_HasProto(stg_gc_l1) \
1074 SymI_HasProto(stg_gc_pp) \
1075 SymI_HasProto(stg_gc_ppp) \
1076 SymI_HasProto(stg_gc_pppp) \
1077 SymI_HasProto(__stg_gc_fun) \
1078 SymI_HasProto(stg_gc_fun_info) \
1079 SymI_HasProto(stg_yield_noregs) \
1080 SymI_HasProto(stg_yield_to_interpreter) \
1081 SymI_HasProto(stg_block_noregs) \
1082 SymI_HasProto(stg_block_takemvar) \
1083 SymI_HasProto(stg_block_readmvar) \
1084 SymI_HasProto(stg_block_putmvar) \
1085 MAIN_CAP_SYM \
1086 SymI_HasProto(MallocFailHook) \
1087 SymI_HasProto(OnExitHook) \
1088 SymI_HasProto(OutOfHeapHook) \
1089 SymI_HasProto(StackOverflowHook) \
1090 SymI_HasProto(addDLL) \
1091 SymI_HasProto(__int_encodeDouble) \
1092 SymI_HasProto(__word_encodeDouble) \
1093 SymI_HasProto(__int_encodeFloat) \
1094 SymI_HasProto(__word_encodeFloat) \
1095 SymI_HasProto(stg_atomicallyzh) \
1096 SymI_HasProto(barf) \
1097 SymI_HasProto(deRefStablePtr) \
1098 SymI_HasProto(debugBelch) \
1099 SymI_HasProto(errorBelch) \
1100 SymI_HasProto(sysErrorBelch) \
1101 SymI_HasProto(stg_getMaskingStatezh) \
1102 SymI_HasProto(stg_maskAsyncExceptionszh) \
1103 SymI_HasProto(stg_maskUninterruptiblezh) \
1104 SymI_HasProto(stg_catchzh) \
1105 SymI_HasProto(stg_catchRetryzh) \
1106 SymI_HasProto(stg_catchSTMzh) \
1107 SymI_HasProto(stg_checkzh) \
1108 SymI_HasProto(closure_flags) \
1109 SymI_HasProto(cmp_thread) \
1110 SymI_HasProto(createAdjustor) \
1111 SymI_HasProto(stg_decodeDoublezu2Intzh) \
1112 SymI_HasProto(stg_decodeDoublezuInt64zh) \
1113 SymI_HasProto(stg_decodeFloatzuIntzh) \
1114 SymI_HasProto(defaultsHook) \
1115 SymI_HasProto(stg_delayzh) \
1116 SymI_HasProto(stg_deRefWeakzh) \
1117 SymI_HasProto(stg_deRefStablePtrzh) \
1118 SymI_HasProto(dirty_MUT_VAR) \
1119 SymI_HasProto(dirty_TVAR) \
1120 SymI_HasProto(stg_forkzh) \
1121 SymI_HasProto(stg_forkOnzh) \
1122 SymI_HasProto(forkProcess) \
1123 SymI_HasProto(forkOS_createThread) \
1124 SymI_HasProto(freeHaskellFunctionPtr) \
1125 SymI_HasProto(getOrSetGHCConcSignalSignalHandlerStore) \
1126 SymI_HasProto(getOrSetGHCConcWindowsPendingDelaysStore) \
1127 SymI_HasProto(getOrSetGHCConcWindowsIOManagerThreadStore) \
1128 SymI_HasProto(getOrSetGHCConcWindowsProddingStore) \
1129 SymI_HasProto(getOrSetSystemEventThreadEventManagerStore) \
1130 SymI_HasProto(getOrSetSystemEventThreadIOManagerThreadStore) \
1131 SymI_HasProto(getOrSetSystemTimerThreadEventManagerStore) \
1132 SymI_HasProto(getOrSetSystemTimerThreadIOManagerThreadStore) \
1133 SymI_HasProto(getOrSetLibHSghcFastStringTable) \
1134 SymI_HasProto(getGCStats) \
1135 SymI_HasProto(getGCStatsEnabled) \
1136 SymI_HasProto(genericRaise) \
1137 SymI_HasProto(getProgArgv) \
1138 SymI_HasProto(getFullProgArgv) \
1139 SymI_HasProto(getStablePtr) \
1140 SymI_HasProto(foreignExportStablePtr) \
1141 SymI_HasProto(hs_init) \
1142 SymI_HasProto(hs_exit) \
1143 SymI_HasProto(hs_set_argv) \
1144 SymI_HasProto(hs_add_root) \
1145 SymI_HasProto(hs_perform_gc) \
1146 SymI_HasProto(hs_lock_stable_tables) \
1147 SymI_HasProto(hs_unlock_stable_tables) \
1148 SymI_HasProto(hs_free_stable_ptr) \
1149 SymI_HasProto(hs_free_stable_ptr_unsafe) \
1150 SymI_HasProto(hs_free_fun_ptr) \
1151 SymI_HasProto(hs_hpc_rootModule) \
1152 SymI_HasProto(hs_hpc_module) \
1153 SymI_HasProto(initLinker) \
1154 SymI_HasProto(initLinker_) \
1155 SymI_HasProto(stg_unpackClosurezh) \
1156 SymI_HasProto(stg_getApStackValzh) \
1157 SymI_HasProto(stg_getSparkzh) \
1158 SymI_HasProto(stg_numSparkszh) \
1159 SymI_HasProto(stg_isCurrentThreadBoundzh) \
1160 SymI_HasProto(stg_isEmptyMVarzh) \
1161 SymI_HasProto(stg_killThreadzh) \
1162 SymI_HasProto(loadArchive) \
1163 SymI_HasProto(loadObj) \
1164 SymI_HasProto(insertSymbol) \
1165 SymI_HasProto(lookupSymbol) \
1166 SymI_HasProto(stg_makeStablePtrzh) \
1167 SymI_HasProto(stg_mkApUpd0zh) \
1168 SymI_HasProto(stg_myThreadIdzh) \
1169 SymI_HasProto(stg_labelThreadzh) \
1170 SymI_HasProto(stg_newArrayzh) \
1171 SymI_HasProto(stg_copyArrayzh) \
1172 SymI_HasProto(stg_copyMutableArrayzh) \
1173 SymI_HasProto(stg_copyArrayArrayzh) \
1174 SymI_HasProto(stg_copyMutableArrayArrayzh) \
1175 SymI_HasProto(stg_cloneArrayzh) \
1176 SymI_HasProto(stg_cloneMutableArrayzh) \
1177 SymI_HasProto(stg_freezzeArrayzh) \
1178 SymI_HasProto(stg_thawArrayzh) \
1179 SymI_HasProto(stg_newArrayArrayzh) \
1180 SymI_HasProto(stg_casArrayzh) \
1181 SymI_HasProto(stg_newSmallArrayzh) \
1182 SymI_HasProto(stg_unsafeThawSmallArrayzh) \
1183 SymI_HasProto(stg_cloneSmallArrayzh) \
1184 SymI_HasProto(stg_cloneSmallMutableArrayzh) \
1185 SymI_HasProto(stg_freezzeSmallArrayzh) \
1186 SymI_HasProto(stg_thawSmallArrayzh) \
1187 SymI_HasProto(stg_copySmallArrayzh) \
1188 SymI_HasProto(stg_copySmallMutableArrayzh) \
1189 SymI_HasProto(stg_casSmallArrayzh) \
1190 SymI_HasProto(stg_newBCOzh) \
1191 SymI_HasProto(stg_newByteArrayzh) \
1192 SymI_HasProto(stg_casIntArrayzh) \
1193 SymI_HasProto(stg_newMVarzh) \
1194 SymI_HasProto(stg_newMutVarzh) \
1195 SymI_HasProto(stg_newTVarzh) \
1196 SymI_HasProto(stg_noDuplicatezh) \
1197 SymI_HasProto(stg_atomicModifyMutVarzh) \
1198 SymI_HasProto(stg_casMutVarzh) \
1199 SymI_HasProto(stg_newPinnedByteArrayzh) \
1200 SymI_HasProto(stg_newAlignedPinnedByteArrayzh) \
1201 SymI_HasProto(stg_shrinkMutableByteArrayzh) \
1202 SymI_HasProto(stg_resizzeMutableByteArrayzh) \
1203 SymI_HasProto(newSpark) \
1204 SymI_HasProto(performGC) \
1205 SymI_HasProto(performMajorGC) \
1206 SymI_HasProto(prog_argc) \
1207 SymI_HasProto(prog_argv) \
1208 SymI_HasProto(stg_putMVarzh) \
1209 SymI_HasProto(stg_raisezh) \
1210 SymI_HasProto(stg_raiseIOzh) \
1211 SymI_HasProto(stg_readTVarzh) \
1212 SymI_HasProto(stg_readTVarIOzh) \
1213 SymI_HasProto(resumeThread) \
1214 SymI_HasProto(setNumCapabilities) \
1215 SymI_HasProto(getNumberOfProcessors) \
1216 SymI_HasProto(resolveObjs) \
1217 SymI_HasProto(stg_retryzh) \
1218 SymI_HasProto(rts_apply) \
1219 SymI_HasProto(rts_checkSchedStatus) \
1220 SymI_HasProto(rts_eval) \
1221 SymI_HasProto(rts_evalIO) \
1222 SymI_HasProto(rts_evalLazyIO) \
1223 SymI_HasProto(rts_evalStableIO) \
1224 SymI_HasProto(rts_eval_) \
1225 SymI_HasProto(rts_getBool) \
1226 SymI_HasProto(rts_getChar) \
1227 SymI_HasProto(rts_getDouble) \
1228 SymI_HasProto(rts_getFloat) \
1229 SymI_HasProto(rts_getInt) \
1230 SymI_HasProto(rts_getInt8) \
1231 SymI_HasProto(rts_getInt16) \
1232 SymI_HasProto(rts_getInt32) \
1233 SymI_HasProto(rts_getInt64) \
1234 SymI_HasProto(rts_getPtr) \
1235 SymI_HasProto(rts_getFunPtr) \
1236 SymI_HasProto(rts_getStablePtr) \
1237 SymI_HasProto(rts_getThreadId) \
1238 SymI_HasProto(rts_getWord) \
1239 SymI_HasProto(rts_getWord8) \
1240 SymI_HasProto(rts_getWord16) \
1241 SymI_HasProto(rts_getWord32) \
1242 SymI_HasProto(rts_getWord64) \
1243 SymI_HasProto(rts_lock) \
1244 SymI_HasProto(rts_mkBool) \
1245 SymI_HasProto(rts_mkChar) \
1246 SymI_HasProto(rts_mkDouble) \
1247 SymI_HasProto(rts_mkFloat) \
1248 SymI_HasProto(rts_mkInt) \
1249 SymI_HasProto(rts_mkInt8) \
1250 SymI_HasProto(rts_mkInt16) \
1251 SymI_HasProto(rts_mkInt32) \
1252 SymI_HasProto(rts_mkInt64) \
1253 SymI_HasProto(rts_mkPtr) \
1254 SymI_HasProto(rts_mkFunPtr) \
1255 SymI_HasProto(rts_mkStablePtr) \
1256 SymI_HasProto(rts_mkString) \
1257 SymI_HasProto(rts_mkWord) \
1258 SymI_HasProto(rts_mkWord8) \
1259 SymI_HasProto(rts_mkWord16) \
1260 SymI_HasProto(rts_mkWord32) \
1261 SymI_HasProto(rts_mkWord64) \
1262 SymI_HasProto(rts_unlock) \
1263 SymI_HasProto(rts_unsafeGetMyCapability) \
1264 SymI_HasProto(rtsSupportsBoundThreads) \
1265 SymI_HasProto(rts_isProfiled) \
1266 SymI_HasProto(rts_isDynamic) \
1267 SymI_HasProto(setProgArgv) \
1268 SymI_HasProto(startupHaskell) \
1269 SymI_HasProto(shutdownHaskell) \
1270 SymI_HasProto(shutdownHaskellAndExit) \
1271 SymI_HasProto(stable_name_table) \
1272 SymI_HasProto(stable_ptr_table) \
1273 SymI_HasProto(stackOverflow) \
1274 SymI_HasProto(stg_CAF_BLACKHOLE_info) \
1275 SymI_HasProto(stg_BLACKHOLE_info) \
1276 SymI_HasProto(__stg_EAGER_BLACKHOLE_info) \
1277 SymI_HasProto(stg_BLOCKING_QUEUE_CLEAN_info) \
1278 SymI_HasProto(stg_BLOCKING_QUEUE_DIRTY_info) \
1279 SymI_HasProto(startTimer) \
1280 SymI_HasProto(stg_MVAR_CLEAN_info) \
1281 SymI_HasProto(stg_MVAR_DIRTY_info) \
1282 SymI_HasProto(stg_TVAR_CLEAN_info) \
1283 SymI_HasProto(stg_TVAR_DIRTY_info) \
1284 SymI_HasProto(stg_IND_STATIC_info) \
1285 SymI_HasProto(stg_ARR_WORDS_info) \
1286 SymI_HasProto(stg_MUT_ARR_PTRS_DIRTY_info) \
1287 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN_info) \
1288 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN0_info) \
1289 SymI_HasProto(stg_SMALL_MUT_ARR_PTRS_DIRTY_info) \
1290 SymI_HasProto(stg_SMALL_MUT_ARR_PTRS_FROZEN_info) \
1291 SymI_HasProto(stg_SMALL_MUT_ARR_PTRS_FROZEN0_info) \
1292 SymI_HasProto(stg_MUT_VAR_CLEAN_info) \
1293 SymI_HasProto(stg_MUT_VAR_DIRTY_info) \
1294 SymI_HasProto(stg_WEAK_info) \
1295 SymI_HasProto(stg_ap_v_info) \
1296 SymI_HasProto(stg_ap_f_info) \
1297 SymI_HasProto(stg_ap_d_info) \
1298 SymI_HasProto(stg_ap_l_info) \
1299 SymI_HasProto(stg_ap_v16_info) \
1300 SymI_HasProto(stg_ap_v32_info) \
1301 SymI_HasProto(stg_ap_v64_info) \
1302 SymI_HasProto(stg_ap_n_info) \
1303 SymI_HasProto(stg_ap_p_info) \
1304 SymI_HasProto(stg_ap_pv_info) \
1305 SymI_HasProto(stg_ap_pp_info) \
1306 SymI_HasProto(stg_ap_ppv_info) \
1307 SymI_HasProto(stg_ap_ppp_info) \
1308 SymI_HasProto(stg_ap_pppv_info) \
1309 SymI_HasProto(stg_ap_pppp_info) \
1310 SymI_HasProto(stg_ap_ppppp_info) \
1311 SymI_HasProto(stg_ap_pppppp_info) \
1312 SymI_HasProto(stg_ap_0_fast) \
1313 SymI_HasProto(stg_ap_v_fast) \
1314 SymI_HasProto(stg_ap_f_fast) \
1315 SymI_HasProto(stg_ap_d_fast) \
1316 SymI_HasProto(stg_ap_l_fast) \
1317 SymI_HasProto(stg_ap_v16_fast) \
1318 SymI_HasProto(stg_ap_v32_fast) \
1319 SymI_HasProto(stg_ap_v64_fast) \
1320 SymI_HasProto(stg_ap_n_fast) \
1321 SymI_HasProto(stg_ap_p_fast) \
1322 SymI_HasProto(stg_ap_pv_fast) \
1323 SymI_HasProto(stg_ap_pp_fast) \
1324 SymI_HasProto(stg_ap_ppv_fast) \
1325 SymI_HasProto(stg_ap_ppp_fast) \
1326 SymI_HasProto(stg_ap_pppv_fast) \
1327 SymI_HasProto(stg_ap_pppp_fast) \
1328 SymI_HasProto(stg_ap_ppppp_fast) \
1329 SymI_HasProto(stg_ap_pppppp_fast) \
1330 SymI_HasProto(stg_ap_1_upd_info) \
1331 SymI_HasProto(stg_ap_2_upd_info) \
1332 SymI_HasProto(stg_ap_3_upd_info) \
1333 SymI_HasProto(stg_ap_4_upd_info) \
1334 SymI_HasProto(stg_ap_5_upd_info) \
1335 SymI_HasProto(stg_ap_6_upd_info) \
1336 SymI_HasProto(stg_ap_7_upd_info) \
1337 SymI_HasProto(stg_exit) \
1338 SymI_HasProto(stg_sel_0_upd_info) \
1339 SymI_HasProto(stg_sel_1_upd_info) \
1340 SymI_HasProto(stg_sel_2_upd_info) \
1341 SymI_HasProto(stg_sel_3_upd_info) \
1342 SymI_HasProto(stg_sel_4_upd_info) \
1343 SymI_HasProto(stg_sel_5_upd_info) \
1344 SymI_HasProto(stg_sel_6_upd_info) \
1345 SymI_HasProto(stg_sel_7_upd_info) \
1346 SymI_HasProto(stg_sel_8_upd_info) \
1347 SymI_HasProto(stg_sel_9_upd_info) \
1348 SymI_HasProto(stg_sel_10_upd_info) \
1349 SymI_HasProto(stg_sel_11_upd_info) \
1350 SymI_HasProto(stg_sel_12_upd_info) \
1351 SymI_HasProto(stg_sel_13_upd_info) \
1352 SymI_HasProto(stg_sel_14_upd_info) \
1353 SymI_HasProto(stg_sel_15_upd_info) \
1354 SymI_HasProto(stg_sel_0_noupd_info) \
1355 SymI_HasProto(stg_sel_1_noupd_info) \
1356 SymI_HasProto(stg_sel_2_noupd_info) \
1357 SymI_HasProto(stg_sel_3_noupd_info) \
1358 SymI_HasProto(stg_sel_4_noupd_info) \
1359 SymI_HasProto(stg_sel_5_noupd_info) \
1360 SymI_HasProto(stg_sel_6_noupd_info) \
1361 SymI_HasProto(stg_sel_7_noupd_info) \
1362 SymI_HasProto(stg_sel_8_noupd_info) \
1363 SymI_HasProto(stg_sel_9_noupd_info) \
1364 SymI_HasProto(stg_sel_10_noupd_info) \
1365 SymI_HasProto(stg_sel_11_noupd_info) \
1366 SymI_HasProto(stg_sel_12_noupd_info) \
1367 SymI_HasProto(stg_sel_13_noupd_info) \
1368 SymI_HasProto(stg_sel_14_noupd_info) \
1369 SymI_HasProto(stg_sel_15_noupd_info) \
1370 SymI_HasProto(stg_upd_frame_info) \
1371 SymI_HasProto(stg_bh_upd_frame_info) \
1372 SymI_HasProto(suspendThread) \
1373 SymI_HasProto(stg_takeMVarzh) \
1374 SymI_HasProto(stg_readMVarzh) \
1375 SymI_HasProto(stg_threadStatuszh) \
1376 SymI_HasProto(stg_tryPutMVarzh) \
1377 SymI_HasProto(stg_tryTakeMVarzh) \
1378 SymI_HasProto(stg_tryReadMVarzh) \
1379 SymI_HasProto(stg_unmaskAsyncExceptionszh) \
1380 SymI_HasProto(unloadObj) \
1381 SymI_HasProto(stg_unsafeThawArrayzh) \
1382 SymI_HasProto(stg_waitReadzh) \
1383 SymI_HasProto(stg_waitWritezh) \
1384 SymI_HasProto(stg_writeTVarzh) \
1385 SymI_HasProto(stg_yieldzh) \
1386 SymI_NeedsProto(stg_interp_constr_entry) \
1387 SymI_HasProto(stg_arg_bitmaps) \
1388 SymI_HasProto(large_alloc_lim) \
1389 SymI_HasProto(g0) \
1390 SymI_HasProto(allocate) \
1391 SymI_HasProto(allocateExec) \
1392 SymI_HasProto(flushExec) \
1393 SymI_HasProto(freeExec) \
1394 SymI_HasProto(getAllocations) \
1395 SymI_HasProto(revertCAFs) \
1396 SymI_HasProto(RtsFlags) \
1397 SymI_NeedsProto(rts_breakpoint_io_action) \
1398 SymI_NeedsProto(rts_stop_next_breakpoint) \
1399 SymI_NeedsProto(rts_stop_on_exception) \
1400 SymI_HasProto(stopTimer) \
1401 SymI_HasProto(n_capabilities) \
1402 SymI_HasProto(enabled_capabilities) \
1403 SymI_HasProto(stg_traceCcszh) \
1404 SymI_HasProto(stg_traceEventzh) \
1405 SymI_HasProto(stg_traceMarkerzh) \
1406 SymI_HasProto(getMonotonicNSec) \
1407 SymI_HasProto(lockFile) \
1408 SymI_HasProto(unlockFile) \
1409 SymI_HasProto(startProfTimer) \
1410 SymI_HasProto(stopProfTimer) \
1411 SymI_HasProto(atomic_inc) \
1412 SymI_HasProto(atomic_dec) \
1413 RTS_USER_SIGNALS_SYMBOLS \
1414 RTS_INTCHAR_SYMBOLS
1415
1416
1417 // 64-bit support functions in libgcc.a
1418 #if defined(__GNUC__) && SIZEOF_VOID_P <= 4 && !defined(_ABIN32)
1419 #define RTS_LIBGCC_SYMBOLS \
1420 SymI_NeedsProto(__divdi3) \
1421 SymI_NeedsProto(__udivdi3) \
1422 SymI_NeedsProto(__moddi3) \
1423 SymI_NeedsProto(__umoddi3) \
1424 SymI_NeedsProto(__muldi3) \
1425 SymI_NeedsProto(__ashldi3) \
1426 SymI_NeedsProto(__ashrdi3) \
1427 SymI_NeedsProto(__lshrdi3) \
1428 SymI_NeedsProto(__fixunsdfdi)
1429 #else
1430 #define RTS_LIBGCC_SYMBOLS
1431 #endif
1432
1433 #if defined(darwin_HOST_OS) && defined(powerpc_HOST_ARCH)
1434 // Symbols that don't have a leading underscore
1435 // on Mac OS X. They have to receive special treatment,
1436 // see machoInitSymbolsWithoutUnderscore()
1437 #define RTS_MACHO_NOUNDERLINE_SYMBOLS \
1438 SymI_NeedsProto(saveFP) \
1439 SymI_NeedsProto(restFP)
1440 #endif
1441
1442 /* entirely bogus claims about types of these symbols */
1443 #define SymI_NeedsProto(vvv) extern void vvv(void);
1444 #if defined(COMPILING_WINDOWS_DLL)
1445 #define SymE_HasProto(vvv) SymE_HasProto(vvv);
1446 # if defined(x86_64_HOST_ARCH)
1447 # define SymE_NeedsProto(vvv) extern void __imp_ ## vvv (void);
1448 # else
1449 # define SymE_NeedsProto(vvv) extern void _imp__ ## vvv (void);
1450 # endif
1451 #else
1452 #define SymE_NeedsProto(vvv) SymI_NeedsProto(vvv);
1453 #define SymE_HasProto(vvv) SymI_HasProto(vvv)
1454 #endif
1455 #define SymI_HasProto(vvv) /**/
1456 #define SymI_HasProto_redirect(vvv,xxx) /**/
1457 RTS_SYMBOLS
1458 RTS_RET_SYMBOLS
1459 RTS_POSIX_ONLY_SYMBOLS
1460 RTS_MINGW_ONLY_SYMBOLS
1461 RTS_CYGWIN_ONLY_SYMBOLS
1462 RTS_DARWIN_ONLY_SYMBOLS
1463 RTS_LIBGCC_SYMBOLS
1464 RTS_LIBFFI_SYMBOLS
1465 #undef SymI_NeedsProto
1466 #undef SymI_HasProto
1467 #undef SymI_HasProto_redirect
1468 #undef SymE_HasProto
1469 #undef SymE_NeedsProto
1470
1471 #ifdef LEADING_UNDERSCORE
1472 #define MAYBE_LEADING_UNDERSCORE_STR(s) ("_" s)
1473 #else
1474 #define MAYBE_LEADING_UNDERSCORE_STR(s) (s)
1475 #endif
1476
1477 #define SymI_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1478 (void*)(&(vvv)) },
1479 #define SymE_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1480 (void*)DLL_IMPORT_DATA_REF(vvv) },
1481
1482 #define SymI_NeedsProto(vvv) SymI_HasProto(vvv)
1483 #define SymE_NeedsProto(vvv) SymE_HasProto(vvv)
1484
1485 // SymI_HasProto_redirect allows us to redirect references to one symbol to
1486 // another symbol. See newCAF/newDynCAF for an example.
1487 #define SymI_HasProto_redirect(vvv,xxx) \
1488 { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1489 (void*)(&(xxx)) },
1490
1491 static RtsSymbolVal rtsSyms[] = {
1492 RTS_SYMBOLS
1493 RTS_RET_SYMBOLS
1494 RTS_POSIX_ONLY_SYMBOLS
1495 RTS_MINGW_ONLY_SYMBOLS
1496 RTS_CYGWIN_ONLY_SYMBOLS
1497 RTS_DARWIN_ONLY_SYMBOLS
1498 RTS_LIBGCC_SYMBOLS
1499 RTS_LIBFFI_SYMBOLS
1500 #if defined(darwin_HOST_OS) && defined(i386_HOST_ARCH)
1501 // dyld stub code contains references to this,
1502 // but it should never be called because we treat
1503 // lazy pointers as nonlazy.
1504 { "dyld_stub_binding_helper", (void*)0xDEADBEEF },
1505 #endif
1506 { 0, 0 } /* sentinel */
1507 };
1508
1509
1510 /* -----------------------------------------------------------------------------
1511 * Insert symbols into hash tables, checking for duplicates.
1512 *
1513 * Returns: 0 on failure, nonzero on success
1514 */
1515
1516 static int ghciInsertSymbolTable(
1517 pathchar* obj_name,
1518 HashTable *table,
1519 char* key,
1520 void *data,
1521 HsBool weak,
1522 ObjectCode *owner)
1523 {
1524 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1525 if (!pinfo) /* new entry */
1526 {
1527 pinfo = stgMallocBytes(sizeof (*pinfo), "ghciInsertToSymbolTable");
1528 pinfo->value = data;
1529 pinfo->owner = owner;
1530 pinfo->weak = weak;
1531 insertStrHashTable(table, key, pinfo);
1532 return 1;
1533 }
1534 else if ((!pinfo->weak || pinfo->value) && weak)
1535 {
1536 return 1; /* duplicate weak symbol, throw it away */
1537 }
1538 else if (pinfo->weak) /* weak symbol is in the table */
1539 {
1540 /* override the weak definition with the non-weak one */
1541 pinfo->value = data;
1542 pinfo->owner = owner;
1543 pinfo->weak = HS_BOOL_FALSE;
1544 return 1;
1545 }
1546 debugBelch(
1547 "GHC runtime linker: fatal error: I found a duplicate definition for symbol\n"
1548 " %s\n"
1549 "whilst processing object file\n"
1550 " %" PATH_FMT "\n"
1551 "This could be caused by:\n"
1552 " * Loading two different object files which export the same symbol\n"
1553 " * Specifying the same object file twice on the GHCi command line\n"
1554 " * An incorrect `package.conf' entry, causing some object to be\n"
1555 " loaded twice.\n",
1556 (char*)key,
1557 obj_name
1558 );
1559 return 0;
1560 }
1561
1562 static HsBool ghciLookupSymbolTable(HashTable *table,
1563 const char *key, void **result)
1564 {
1565 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1566 if (!pinfo) {
1567 *result = NULL;
1568 return HS_BOOL_FALSE;
1569 }
1570 if (pinfo->weak)
1571 IF_DEBUG(linker, debugBelch("lookup: promoting %s\n", key));
1572 /* Once it's looked up, it can no longer be overridden */
1573 pinfo->weak = HS_BOOL_FALSE;
1574
1575 *result = pinfo->value;
1576 return HS_BOOL_TRUE;
1577 }
1578
1579 static void ghciRemoveSymbolTable(HashTable *table, const char *key,
1580 ObjectCode *owner)
1581 {
1582 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1583 if (!pinfo || owner != pinfo->owner) return;
1584 removeStrHashTable(table, key, NULL);
1585 stgFree(pinfo);
1586 }
1587 /* -----------------------------------------------------------------------------
1588 * initialize the object linker
1589 */
1590
1591
1592 static int linker_init_done = 0 ;
1593
1594 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1595 static void *dl_prog_handle;
1596 static regex_t re_invalid;
1597 static regex_t re_realso;
1598 #ifdef THREADED_RTS
1599 static Mutex dl_mutex; // mutex to protect dlopen/dlerror critical section
1600 #endif
1601 #elif defined(OBJFORMAT_PEi386)
1602 void addDLLHandle(pathchar* dll_name, HINSTANCE instance);
1603 #endif
1604
1605 void initLinker (void)
1606 {
1607 // default to retaining CAFs for backwards compatibility. Most
1608 // users will want initLinker_(0): otherwise unloadObj() will not
1609 // be able to unload object files when they contain CAFs.
1610 initLinker_(1);
1611 }
1612
1613 void
1614 initLinker_ (int retain_cafs)
1615 {
1616 RtsSymbolVal *sym;
1617 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1618 int compileResult;
1619 #endif
1620
1621 IF_DEBUG(linker, debugBelch("initLinker: start\n"));
1622
1623 /* Make initLinker idempotent, so we can call it
1624 before every relevant operation; that means we
1625 don't need to initialise the linker separately */
1626 if (linker_init_done == 1) {
1627 IF_DEBUG(linker, debugBelch("initLinker: idempotent return\n"));
1628 return;
1629 } else {
1630 linker_init_done = 1;
1631 }
1632
1633 objects = NULL;
1634 unloaded_objects = NULL;
1635
1636 #if defined(THREADED_RTS) && (defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO))
1637 initMutex(&dl_mutex);
1638 #endif
1639 symhash = allocStrHashTable();
1640
1641 /* populate the symbol table with stuff from the RTS */
1642 for (sym = rtsSyms; sym->lbl != NULL; sym++) {
1643 if (! ghciInsertSymbolTable(WSTR("(GHCi built-in symbols)"),
1644 symhash, sym->lbl, sym->addr, HS_BOOL_FALSE, NULL)) {
1645 barf("ghciInsertSymbolTable failed");
1646 }
1647 IF_DEBUG(linker, debugBelch("initLinker: inserting rts symbol %s, %p\n", sym->lbl, sym->addr));
1648 }
1649 # if defined(OBJFORMAT_MACHO) && defined(powerpc_HOST_ARCH)
1650 machoInitSymbolsWithoutUnderscore();
1651 # endif
1652 /* GCC defines a special symbol __dso_handle which is resolved to NULL if
1653 referenced from a statically linked module. We need to mimic this, but
1654 we cannot use NULL because we use it to mean nonexistent symbols. So we
1655 use an arbitrary (hopefully unique) address here.
1656 */
1657 if (! ghciInsertSymbolTable(WSTR("(GHCi special symbols)"),
1658 symhash, "__dso_handle", (void *)0x12345687, HS_BOOL_FALSE, NULL)) {
1659 barf("ghciInsertSymbolTable failed");
1660 }
1661
1662 // Redurect newCAF to newDynCAF if retain_cafs is true.
1663 if (! ghciInsertSymbolTable(WSTR("(GHCi built-in symbols)"), symhash,
1664 MAYBE_LEADING_UNDERSCORE_STR("newCAF"),
1665 retain_cafs ? newDynCAF : newCAF,
1666 HS_BOOL_FALSE, NULL)) {
1667 barf("ghciInsertSymbolTable failed");
1668 }
1669
1670 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1671 # if defined(RTLD_DEFAULT)
1672 dl_prog_handle = RTLD_DEFAULT;
1673 # else
1674 dl_prog_handle = dlopen(NULL, RTLD_LAZY);
1675 # endif /* RTLD_DEFAULT */
1676
1677 compileResult = regcomp(&re_invalid,
1678 "(([^ \t()])+\\.so([^ \t:()])*):([ \t])*(invalid ELF header|file too short)",
1679 REG_EXTENDED);
1680 if (compileResult != 0) {
1681 barf("Compiling re_invalid failed");
1682 }
1683 compileResult = regcomp(&re_realso,
1684 "(GROUP|INPUT) *\\( *([^ )]+)",
1685 REG_EXTENDED);
1686 if (compileResult != 0) {
1687 barf("Compiling re_realso failed");
1688 }
1689 # endif
1690
1691 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1692 if (RtsFlags.MiscFlags.linkerMemBase != 0) {
1693 // User-override for mmap_32bit_base
1694 mmap_32bit_base = (void*)RtsFlags.MiscFlags.linkerMemBase;
1695 }
1696 #endif
1697
1698 #if defined(mingw32_HOST_OS)
1699 /*
1700 * These two libraries cause problems when added to the static link,
1701 * but are necessary for resolving symbols in GHCi, hence we load
1702 * them manually here.
1703 */
1704 addDLL(WSTR("msvcrt"));
1705 addDLL(WSTR("kernel32"));
1706 addDLLHandle(WSTR("*.exe"), GetModuleHandle(NULL));
1707 #endif
1708
1709 IF_DEBUG(linker, debugBelch("initLinker: done\n"));
1710 return;
1711 }
1712
1713 void
1714 exitLinker( void ) {
1715 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1716 if (linker_init_done == 1) {
1717 regfree(&re_invalid);
1718 regfree(&re_realso);
1719 #ifdef THREADED_RTS
1720 closeMutex(&dl_mutex);
1721 #endif
1722 }
1723 #endif
1724 if (linker_init_done == 1) {
1725 freeHashTable(symhash, free);
1726 }
1727 }
1728
1729 /* -----------------------------------------------------------------------------
1730 * Loading DLL or .so dynamic libraries
1731 * -----------------------------------------------------------------------------
1732 *
1733 * Add a DLL from which symbols may be found. In the ELF case, just
1734 * do RTLD_GLOBAL-style add, so no further messing around needs to
1735 * happen in order that symbols in the loaded .so are findable --
1736 * lookupSymbol() will subsequently see them by dlsym on the program's
1737 * dl-handle. Returns NULL if success, otherwise ptr to an err msg.
1738 *
1739 * In the PEi386 case, open the DLLs and put handles to them in a
1740 * linked list. When looking for a symbol, try all handles in the
1741 * list. This means that we need to load even DLLs that are guaranteed
1742 * to be in the ghc.exe image already, just so we can get a handle
1743 * to give to loadSymbol, so that we can find the symbols. For such
1744 * libraries, the LoadLibrary call should be a no-op except for returning
1745 * the handle.
1746 *
1747 */
1748
1749 #if defined(OBJFORMAT_PEi386)
1750 /* A record for storing handles into DLLs. */
1751
1752 typedef
1753 struct _OpenedDLL {
1754 pathchar* name;
1755 struct _OpenedDLL* next;
1756 HINSTANCE instance;
1757 }
1758 OpenedDLL;
1759
1760 /* A list thereof. */
1761 static OpenedDLL* opened_dlls = NULL;
1762
1763 /* A record for storing indirectly linked functions from DLLs. */
1764 typedef
1765 struct _IndirectAddr {
1766 void* addr;
1767 struct _IndirectAddr* next;
1768 }
1769 IndirectAddr;
1770
1771 /* A list thereof. */
1772 static IndirectAddr* indirects = NULL;
1773
1774 /* Adds a DLL instance to the list of DLLs in which to search for symbols. */
1775 void addDLLHandle(pathchar* dll_name, HINSTANCE instance) {
1776 OpenedDLL* o_dll;
1777 o_dll = stgMallocBytes( sizeof(OpenedDLL), "addDLLHandle" );
1778 o_dll->name = dll_name ? pathdup(dll_name) : NULL;
1779 o_dll->instance = instance;
1780 o_dll->next = opened_dlls;
1781 opened_dlls = o_dll;
1782 }
1783
1784 #endif
1785
1786 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1787
1788 /* Suppose in ghci we load a temporary SO for a module containing
1789 f = 1
1790 and then modify the module, recompile, and load another temporary
1791 SO with
1792 f = 2
1793 Then as we don't unload the first SO, dlsym will find the
1794 f = 1
1795 symbol whereas we want the
1796 f = 2
1797 symbol. We therefore need to keep our own SO handle list, and
1798 try SOs in the right order. */
1799
1800 typedef
1801 struct _OpenedSO {
1802 struct _OpenedSO* next;
1803 void *handle;
1804 }
1805 OpenedSO;
1806
1807 /* A list thereof. */
1808 static OpenedSO* openedSOs = NULL;
1809
1810 static const char *
1811 internal_dlopen(const char *dll_name)
1812 {
1813 OpenedSO* o_so;
1814 void *hdl;
1815 const char *errmsg;
1816 char *errmsg_copy;
1817
1818 // omitted: RTLD_NOW
1819 // see http://www.haskell.org/pipermail/cvs-ghc/2007-September/038570.html
1820 IF_DEBUG(linker,
1821 debugBelch("internal_dlopen: dll_name = '%s'\n", dll_name));
1822
1823 //-------------- Begin critical section ------------------
1824 // This critical section is necessary because dlerror() is not
1825 // required to be reentrant (see POSIX -- IEEE Std 1003.1-2008)
1826 // Also, the error message returned must be copied to preserve it
1827 // (see POSIX also)
1828
1829 ACQUIRE_LOCK(&dl_mutex);
1830 hdl = dlopen(dll_name, RTLD_LAZY | RTLD_GLOBAL);
1831
1832 errmsg = NULL;
1833 if (hdl == NULL) {
1834 /* dlopen failed; return a ptr to the error msg. */
1835 errmsg = dlerror();
1836 if (errmsg == NULL) errmsg = "addDLL: unknown error";
1837 errmsg_copy = stgMallocBytes(strlen(errmsg)+1, "addDLL");
1838 strcpy(errmsg_copy, errmsg);
1839 errmsg = errmsg_copy;
1840 }
1841 o_so = stgMallocBytes(sizeof(OpenedSO), "addDLL");
1842 o_so->handle = hdl;
1843 o_so->next = openedSOs;
1844 openedSOs = o_so;
1845
1846 RELEASE_LOCK(&dl_mutex);
1847 //--------------- End critical section -------------------
1848
1849 return errmsg;
1850 }
1851
1852 static void *
1853 internal_dlsym(void *hdl, const char *symbol) {
1854 OpenedSO* o_so;
1855 void *v;
1856
1857 // We acquire dl_mutex as concurrent dl* calls may alter dlerror
1858 ACQUIRE_LOCK(&dl_mutex);
1859 dlerror();
1860 for (o_so = openedSOs; o_so != NULL; o_so = o_so->next) {
1861 v = dlsym(o_so->handle, symbol);
1862 if (dlerror() == NULL) {
1863 RELEASE_LOCK(&dl_mutex);
1864 return v;
1865 }
1866 }
1867 v = dlsym(hdl, symbol);
1868 RELEASE_LOCK(&dl_mutex);
1869 return v;
1870 }
1871 # endif
1872
1873 const char *
1874 addDLL( pathchar *dll_name )
1875 {
1876 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1877 /* ------------------- ELF DLL loader ------------------- */
1878
1879 #define NMATCH 5
1880 regmatch_t match[NMATCH];
1881 const char *errmsg;
1882 FILE* fp;
1883 size_t match_length;
1884 #define MAXLINE 1000
1885 char line[MAXLINE];
1886 int result;
1887
1888 initLinker();
1889
1890 IF_DEBUG(linker, debugBelch("addDLL: dll_name = '%s'\n", dll_name));
1891 errmsg = internal_dlopen(dll_name);
1892
1893 if (errmsg == NULL) {
1894 return NULL;
1895 }
1896
1897 // GHC Trac ticket #2615
1898 // On some systems (e.g., Gentoo Linux) dynamic files (e.g. libc.so)
1899 // contain linker scripts rather than ELF-format object code. This
1900 // code handles the situation by recognizing the real object code
1901 // file name given in the linker script.
1902 //
1903 // If an "invalid ELF header" error occurs, it is assumed that the
1904 // .so file contains a linker script instead of ELF object code.
1905 // In this case, the code looks for the GROUP ( ... ) linker
1906 // directive. If one is found, the first file name inside the
1907 // parentheses is treated as the name of a dynamic library and the
1908 // code attempts to dlopen that file. If this is also unsuccessful,
1909 // an error message is returned.
1910
1911 // see if the error message is due to an invalid ELF header
1912 IF_DEBUG(linker, debugBelch("errmsg = '%s'\n", errmsg));
1913 result = regexec(&re_invalid, errmsg, (size_t) NMATCH, match, 0);
1914 IF_DEBUG(linker, debugBelch("result = %i\n", result));
1915 if (result == 0) {
1916 // success -- try to read the named file as a linker script
1917 match_length = (size_t) stg_min((match[1].rm_eo - match[1].rm_so),
1918 MAXLINE-1);
1919 strncpy(line, (errmsg+(match[1].rm_so)),match_length);
1920 line[match_length] = '\0'; // make sure string is null-terminated
1921 IF_DEBUG(linker, debugBelch ("file name = '%s'\n", line));
1922 if ((fp = fopen(line, "r")) == NULL) {
1923 return errmsg; // return original error if open fails
1924 }
1925 // try to find a GROUP or INPUT ( ... ) command
1926 while (fgets(line, MAXLINE, fp) != NULL) {
1927 IF_DEBUG(linker, debugBelch("input line = %s", line));
1928 if (regexec(&re_realso, line, (size_t) NMATCH, match, 0) == 0) {
1929 // success -- try to dlopen the first named file
1930 IF_DEBUG(linker, debugBelch("match%s\n",""));
1931 line[match[2].rm_eo] = '\0';
1932 stgFree((void*)errmsg); // Free old message before creating new one
1933 errmsg = internal_dlopen(line+match[2].rm_so);
1934 break;
1935 }
1936 // if control reaches here, no GROUP or INPUT ( ... ) directive
1937 // was found and the original error message is returned to the
1938 // caller
1939 }
1940 fclose(fp);
1941 }
1942 return errmsg;
1943
1944 # elif defined(OBJFORMAT_PEi386)
1945 /* ------------------- Win32 DLL loader ------------------- */
1946
1947 pathchar* buf;
1948 OpenedDLL* o_dll;
1949 HINSTANCE instance;
1950
1951 initLinker();
1952
1953 /* debugBelch("\naddDLL; dll_name = `%s'\n", dll_name); */
1954
1955 /* See if we've already got it, and ignore if so. */
1956 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
1957 if (0 == pathcmp(o_dll->name, dll_name))
1958 return NULL;
1959 }
1960
1961 /* The file name has no suffix (yet) so that we can try
1962 both foo.dll and foo.drv
1963
1964 The documentation for LoadLibrary says:
1965 If no file name extension is specified in the lpFileName
1966 parameter, the default library extension .dll is
1967 appended. However, the file name string can include a trailing
1968 point character (.) to indicate that the module name has no
1969 extension. */
1970
1971 buf = stgMallocBytes((pathlen(dll_name) + 10) * sizeof(wchar_t), "addDLL");
1972 swprintf(buf, L"%s.DLL", dll_name);
1973 instance = LoadLibraryW(buf);
1974 if (instance == NULL) {
1975 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1976 // KAA: allow loading of drivers (like winspool.drv)
1977 swprintf(buf, L"%s.DRV", dll_name);
1978 instance = LoadLibraryW(buf);
1979 if (instance == NULL) {
1980 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1981 // #1883: allow loading of unix-style libfoo.dll DLLs
1982 swprintf(buf, L"lib%s.DLL", dll_name);
1983 instance = LoadLibraryW(buf);
1984 if (instance == NULL) {
1985 goto error;
1986 }
1987 }
1988 }
1989 stgFree(buf);
1990
1991 addDLLHandle(dll_name, instance);
1992
1993 return NULL;
1994
1995 error:
1996 stgFree(buf);
1997 sysErrorBelch("%" PATH_FMT, dll_name);
1998
1999 /* LoadLibrary failed; return a ptr to the error msg. */
2000 return "addDLL: could not load DLL";
2001
2002 # else
2003 barf("addDLL: not implemented on this platform");
2004 # endif
2005 }
2006
2007 /* -----------------------------------------------------------------------------
2008 * insert a symbol in the hash table
2009 *
2010 * Returns: 0 on failure, nozero on success
2011 */
2012 HsInt insertSymbol(pathchar* obj_name, char* key, void* data)
2013 {
2014 return ghciInsertSymbolTable(obj_name, symhash, key, data, HS_BOOL_FALSE, NULL);
2015 }
2016
2017 /* -----------------------------------------------------------------------------
2018 * lookup a symbol in the hash table
2019 */
2020 void *
2021 lookupSymbol( char *lbl )
2022 {
2023 void *val;
2024 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s\n", lbl));
2025 initLinker() ;
2026 ASSERT(symhash != NULL);
2027
2028 if (!ghciLookupSymbolTable(symhash, lbl, &val)) {
2029 IF_DEBUG(linker, debugBelch("lookupSymbol: symbol not found\n"));
2030 # if defined(OBJFORMAT_ELF)
2031 return internal_dlsym(dl_prog_handle, lbl);
2032 # elif defined(OBJFORMAT_MACHO)
2033 # if HAVE_DLFCN_H
2034 /* On OS X 10.3 and later, we use dlsym instead of the old legacy
2035 interface.
2036
2037 HACK: On OS X, all symbols are prefixed with an underscore.
2038 However, dlsym wants us to omit the leading underscore from the
2039 symbol name -- the dlsym routine puts it back on before searching
2040 for the symbol. For now, we simply strip it off here (and ONLY
2041 here).
2042 */
2043 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s with dlsym\n", lbl));
2044 ASSERT(lbl[0] == '_');
2045 return internal_dlsym(dl_prog_handle, lbl + 1);
2046 # else
2047 if (NSIsSymbolNameDefined(lbl)) {
2048 NSSymbol symbol = NSLookupAndBindSymbol(lbl);
2049 return NSAddressOfSymbol(symbol);
2050 } else {
2051 return NULL;
2052 }
2053 # endif /* HAVE_DLFCN_H */
2054 # elif defined(OBJFORMAT_PEi386)
2055 void* sym;
2056
2057 sym = lookupSymbolInDLLs((unsigned char*)lbl);
2058 if (sym != NULL) { return sym; };
2059
2060 // Also try looking up the symbol without the @N suffix. Some
2061 // DLLs have the suffixes on their symbols, some don't.
2062 zapTrailingAtSign ( (unsigned char*)lbl );
2063 sym = lookupSymbolInDLLs((unsigned char*)lbl);
2064 if (sym != NULL) { return sym; };
2065 return NULL;
2066
2067 # else
2068 ASSERT(2+2 == 5);
2069 return NULL;
2070 # endif
2071 } else {
2072 IF_DEBUG(linker, debugBelch("lookupSymbol: value of %s is %p\n", lbl, val));
2073 return val;
2074 }
2075 }
2076
2077 /* -----------------------------------------------------------------------------
2078 Create a StablePtr for a foreign export. This is normally called by
2079 a C function with __attribute__((constructor)), which is generated
2080 by GHC and linked into the module.
2081
2082 If the object code is being loaded dynamically, then we remember
2083 which StablePtrs were allocated by the constructors and free them
2084 again in unloadObj().
2085 -------------------------------------------------------------------------- */
2086
2087 static ObjectCode *loading_obj = NULL;
2088
2089 StgStablePtr foreignExportStablePtr (StgPtr p)
2090 {
2091 ForeignExportStablePtr *fe_sptr;
2092 StgStablePtr *sptr;
2093
2094 sptr = getStablePtr(p);
2095
2096 if (loading_obj != NULL) {
2097 fe_sptr = stgMallocBytes(sizeof(ForeignExportStablePtr),
2098 "foreignExportStablePtr");
2099 fe_sptr->stable_ptr = sptr;
2100 fe_sptr->next = loading_obj->stable_ptrs;
2101 loading_obj->stable_ptrs = fe_sptr;
2102 }
2103
2104 return sptr;
2105 }
2106
2107
2108 /* -----------------------------------------------------------------------------
2109 * Debugging aid: look in GHCi's object symbol tables for symbols
2110 * within DELTA bytes of the specified address, and show their names.
2111 */
2112 #ifdef DEBUG
2113 void ghci_enquire ( char* addr );
2114
2115 void ghci_enquire ( char* addr )
2116 {
2117 int i;
2118 char* sym;
2119 char* a;
2120 const int DELTA = 64;
2121 ObjectCode* oc;
2122
2123 initLinker();
2124
2125 for (oc = objects; oc; oc = oc->next) {
2126 for (i = 0; i < oc->n_symbols; i++) {
2127 sym = oc->symbols[i];
2128 if (sym == NULL) continue;
2129 a = NULL;
2130 if (a == NULL) {
2131 ghciLookupSymbolTable(symhash, sym, (void **)&a);
2132 }
2133 if (a == NULL) {
2134 // debugBelch("ghci_enquire: can't find %s\n", sym);
2135 }
2136 else if (addr-DELTA <= a && a <= addr+DELTA) {
2137 debugBelch("%p + %3d == `%s'\n", addr, (int)(a - addr), sym);
2138 }
2139 }
2140 }
2141 }
2142 #endif
2143
2144 #ifdef USE_MMAP
2145 #define ROUND_UP(x,size) ((x + size - 1) & ~(size - 1))
2146
2147 //
2148 // Returns NULL on failure.
2149 //
2150 static void * mmapForLinker (size_t bytes, nat flags, int fd)
2151 {
2152 void *map_addr = NULL;
2153 void *result;
2154 int pagesize;
2155 StgWord size;
2156 static nat fixed = 0;
2157
2158 IF_DEBUG(linker, debugBelch("mmapForLinker: start\n"));
2159 pagesize = getpagesize();
2160 size = ROUND_UP(bytes, pagesize);
2161
2162 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2163 mmap_again:
2164
2165 if (mmap_32bit_base != 0) {
2166 map_addr = mmap_32bit_base;
2167 }
2168 #endif
2169
2170 IF_DEBUG(linker,
2171 debugBelch("mmapForLinker: \tprotection %#0x\n",
2172 PROT_EXEC | PROT_READ | PROT_WRITE));
2173 IF_DEBUG(linker,
2174 debugBelch("mmapForLinker: \tflags %#0x\n",
2175 MAP_PRIVATE | TRY_MAP_32BIT | fixed | flags));
2176
2177 result = mmap(map_addr, size,
2178 PROT_EXEC|PROT_READ|PROT_WRITE,
2179 MAP_PRIVATE|TRY_MAP_32BIT|fixed|flags, fd, 0);
2180
2181 if (result == MAP_FAILED) {
2182 sysErrorBelch("mmap %" FMT_Word " bytes at %p",(W_)size,map_addr);
2183 errorBelch("Try specifying an address with +RTS -xm<addr> -RTS");
2184 return NULL;
2185 }
2186
2187 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2188 if (mmap_32bit_base != 0) {
2189 if (result == map_addr) {
2190 mmap_32bit_base = (StgWord8*)map_addr + size;
2191 } else {
2192 if ((W_)result > 0x80000000) {
2193 // oops, we were given memory over 2Gb
2194 munmap(result,size);
2195 #if defined(freebsd_HOST_OS) || \
2196 defined(kfreebsdgnu_HOST_OS) || \
2197 defined(dragonfly_HOST_OS)
2198 // Some platforms require MAP_FIXED. This is normally
2199 // a bad idea, because MAP_FIXED will overwrite
2200 // existing mappings.
2201 fixed = MAP_FIXED;
2202 goto mmap_again;
2203 #else
2204 errorBelch("loadObj: failed to mmap() memory below 2Gb; "
2205 "asked for %lu bytes at %p. "
2206 "Try specifying an address with +RTS -xm<addr> -RTS",
2207 size, map_addr);
2208 return NULL;
2209 #endif
2210 } else {
2211 // hmm, we were given memory somewhere else, but it's
2212 // still under 2Gb so we can use it. Next time, ask
2213 // for memory right after the place we just got some
2214 mmap_32bit_base = (StgWord8*)result + size;
2215 }
2216 }
2217 } else {
2218 if ((W_)result > 0x80000000) {
2219 // oops, we were given memory over 2Gb
2220 // ... try allocating memory somewhere else?;
2221 debugTrace(DEBUG_linker,
2222 "MAP_32BIT didn't work; gave us %lu bytes at 0x%p",
2223 bytes, result);
2224 munmap(result, size);
2225
2226 // Set a base address and try again... (guess: 1Gb)
2227 mmap_32bit_base = (void*)0x40000000;
2228 goto mmap_again;
2229 }
2230 }
2231 #endif
2232
2233 IF_DEBUG(linker,
2234 debugBelch("mmapForLinker: mapped %" FMT_Word
2235 " bytes starting at %p\n", (W_)size, result));
2236 IF_DEBUG(linker,
2237 debugBelch("mmapForLinker: done\n"));
2238
2239 return result;
2240 }
2241 #endif // USE_MMAP
2242
2243 static void removeOcSymbols (ObjectCode *oc)
2244 {
2245 if (oc->symbols == NULL) return;
2246
2247 /* Remove all the mappings for the symbols within this object..
2248 */
2249 int i;
2250 for (i = 0; i < oc->n_symbols; i++) {
2251 if (oc->symbols[i] != NULL) {
2252 ghciRemoveSymbolTable(symhash, oc->symbols[i], oc);
2253 }
2254 }
2255 }
2256
2257 /*
2258 * freeObjectCode() releases all the pieces of an ObjectCode. It is called by
2259 * the GC when a previously unloaded ObjectCode has been determined to be
2260 * unused, and when an error occurs during loadObj().
2261 */
2262 void freeObjectCode (ObjectCode *oc)
2263 {
2264 if (oc->symbols != NULL) {
2265 stgFree(oc->symbols);
2266 oc->symbols = NULL;
2267 }
2268
2269 {
2270 Section *s, *nexts;
2271
2272 for (s = oc->sections; s != NULL; s = nexts) {
2273 nexts = s->next;
2274 stgFree(s);
2275 }
2276 }
2277
2278 freeProddableBlocks(oc);
2279
2280 #ifdef USE_MMAP
2281 int pagesize, size, r;
2282
2283 pagesize = getpagesize();
2284 size = ROUND_UP(oc->fileSize, pagesize);
2285
2286 r = munmap(oc->image, size);
2287 if (r == -1) {
2288 sysErrorBelch("munmap");
2289 }
2290
2291 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2292 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2293 if (!USE_CONTIGUOUS_MMAP && oc->symbol_extras != NULL)
2294 {
2295 munmap(oc->symbol_extras,
2296 ROUND_UP(sizeof(SymbolExtra) * oc->n_symbol_extras, pagesize));
2297 }
2298 #endif
2299 #endif
2300
2301 #else
2302
2303 #ifndef mingw32_HOST_OS
2304 stgFree(oc->image);
2305 #else
2306 VirtualFree(oc->image - PEi386_IMAGE_OFFSET, 0, MEM_RELEASE);
2307
2308 IndirectAddr *ia, *ia_next;
2309 ia = indirects;
2310 while (ia != NULL) {
2311 ia_next = ia->next;
2312 stgFree(ia);
2313 ia = ia_next;
2314 }
2315
2316 #endif
2317
2318 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2319 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2320 stgFree(oc->symbol_extras);
2321 #endif
2322 #endif
2323
2324 #endif
2325
2326 stgFree(oc->fileName);
2327 stgFree(oc->archiveMemberName);
2328 stgFree(oc);
2329 }
2330
2331
2332 static ObjectCode*
2333 mkOc( pathchar *path, char *image, int imageSize,
2334 char *archiveMemberName
2335 #ifndef USE_MMAP
2336 #ifdef darwin_HOST_OS
2337 , int misalignment
2338 #endif
2339 #endif
2340 ) {
2341 ObjectCode* oc;
2342
2343 IF_DEBUG(linker, debugBelch("mkOc: start\n"));
2344 oc = stgMallocBytes(sizeof(ObjectCode), "mkOc(oc)");
2345
2346 # if defined(OBJFORMAT_ELF)
2347 oc->formatName = "ELF";
2348 # elif defined(OBJFORMAT_PEi386)
2349 oc->formatName = "PEi386";
2350 # elif defined(OBJFORMAT_MACHO)
2351 oc->formatName = "Mach-O";
2352 # else
2353 stgFree(oc);
2354 barf("loadObj: not implemented on this platform");
2355 # endif
2356
2357 oc->image = image;
2358 oc->fileName = pathdup(path);
2359
2360 if (archiveMemberName) {
2361 oc->archiveMemberName = stgMallocBytes( strlen(archiveMemberName)+1, "loadObj" );
2362 strcpy(oc->archiveMemberName, archiveMemberName);
2363 }
2364 else {
2365 oc->archiveMemberName = NULL;
2366 }
2367
2368 oc->fileSize = imageSize;
2369 oc->symbols = NULL;
2370 oc->sections = NULL;
2371 oc->proddables = NULL;
2372 oc->stable_ptrs = NULL;
2373 #if powerpc_HOST_ARCH || x86_64_HOST_ARCH || arm_HOST_ARCH
2374 oc->symbol_extras = NULL;
2375 #endif
2376
2377 #ifndef USE_MMAP
2378 #ifdef darwin_HOST_OS
2379 oc->misalignment = misalignment;
2380 #endif
2381 #endif
2382
2383 /* chain it onto the list of objects */
2384 oc->next = NULL;
2385
2386 IF_DEBUG(linker, debugBelch("mkOc: done\n"));
2387 return oc;
2388 }
2389
2390 /* -----------------------------------------------------------------------------
2391 * Check if an object or archive is already loaded.
2392 *
2393 * Returns: 1 if the path is already loaded, 0 otherwise.
2394 */
2395 static HsInt
2396 isAlreadyLoaded( pathchar *path )
2397 {
2398 ObjectCode *o;
2399 for (o = objects; o; o = o->next) {
2400 if (0 == pathcmp(o->fileName, path)) {
2401 return 1; /* already loaded */
2402 }
2403 }
2404 return 0; /* not loaded yet */
2405 }
2406
2407 HsInt
2408 loadArchive( pathchar *path )
2409 {
2410 ObjectCode* oc;
2411 char *image;
2412 int memberSize;
2413 FILE *f;
2414 int n;
2415 size_t thisFileNameSize;
2416 char *fileName;
2417 size_t fileNameSize;
2418 int isObject, isGnuIndex, isThin;
2419 char tmp[20];
2420 char *gnuFileIndex;
2421 int gnuFileIndexSize;
2422 #if defined(darwin_HOST_OS)
2423 int i;
2424 uint32_t nfat_arch, nfat_offset, cputype, cpusubtype;
2425 #if defined(i386_HOST_ARCH)
2426 const uint32_t mycputype = CPU_TYPE_X86;
2427 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_ALL;
2428 #elif defined(x86_64_HOST_ARCH)
2429 const uint32_t mycputype = CPU_TYPE_X86_64;
2430 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_64_ALL;
2431 #elif defined(powerpc_HOST_ARCH)
2432 const uint32_t mycputype = CPU_TYPE_POWERPC;
2433 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2434 #elif defined(powerpc64_HOST_ARCH)
2435 const uint32_t mycputype = CPU_TYPE_POWERPC64;
2436 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2437 #else
2438 #error Unknown Darwin architecture
2439 #endif
2440 #if !defined(USE_MMAP)
2441 int misalignment;
2442 #endif
2443 #endif
2444
2445 /* TODO: don't call barf() on error, instead return an error code, freeing
2446 * all resources correctly. This function is pretty complex, so it needs
2447 * to be refactored to make this practical. */
2448
2449 initLinker();
2450
2451 IF_DEBUG(linker, debugBelch("loadArchive: start\n"));
2452 IF_DEBUG(linker, debugBelch("loadArchive: Loading archive `%" PATH_FMT" '\n", path));
2453
2454 /* Check that we haven't already loaded this archive.
2455 Ignore requests to load multiple times */
2456 if (isAlreadyLoaded(path)) {
2457 IF_DEBUG(linker,
2458 debugBelch("ignoring repeated load of %" PATH_FMT "\n", path));
2459 return 1; /* success */
2460 }
2461
2462 gnuFileIndex = NULL;
2463 gnuFileIndexSize = 0;
2464
2465 fileNameSize = 32;
2466 fileName = stgMallocBytes(fileNameSize, "loadArchive(fileName)");
2467
2468 isThin = 0;
2469
2470 f = pathopen(path, WSTR("rb"));
2471 if (!f)
2472 barf("loadObj: can't read `%s'", path);
2473
2474 /* Check if this is an archive by looking for the magic "!<arch>\n"
2475 * string. Usually, if this fails, we barf and quit. On Darwin however,
2476 * we may have a fat archive, which contains archives for more than
2477 * one architecture. Fat archives start with the magic number 0xcafebabe,
2478 * always stored big endian. If we find a fat_header, we scan through
2479 * the fat_arch structs, searching through for one for our host
2480 * architecture. If a matching struct is found, we read the offset
2481 * of our archive data (nfat_offset) and seek forward nfat_offset bytes
2482 * from the start of the file.
2483 *
2484 * A subtlety is that all of the members of the fat_header and fat_arch
2485 * structs are stored big endian, so we need to call byte order
2486 * conversion functions.
2487 *
2488 * If we find the appropriate architecture in a fat archive, we gobble
2489 * its magic "!<arch>\n" string and continue processing just as if
2490 * we had a single architecture archive.
2491 */
2492
2493 n = fread ( tmp, 1, 8, f );
2494 if (n != 8)
2495 barf("loadArchive: Failed reading header from `%s'", path);
2496 if (strncmp(tmp, "!<arch>\n", 8) == 0) {}
2497 #if !defined(mingw32_HOST_OS)
2498 /* See Note [thin archives on Windows] */
2499 else if (strncmp(tmp, "!<thin>\n", 8) == 0) {
2500 isThin = 1;
2501 }
2502 #endif
2503 #if defined(darwin_HOST_OS)
2504 /* Not a standard archive, look for a fat archive magic number: */
2505 else if (ntohl(*(uint32_t *)tmp) == FAT_MAGIC) {
2506 nfat_arch = ntohl(*(uint32_t *)(tmp + 4));
2507 IF_DEBUG(linker, debugBelch("loadArchive: found a fat archive containing %d architectures\n", nfat_arch));
2508 nfat_offset = 0;
2509
2510 for (i = 0; i < (int)nfat_arch; i++) {
2511 /* search for the right arch */
2512 n = fread( tmp, 1, 20, f );
2513 if (n != 8)
2514 barf("loadArchive: Failed reading arch from `%s'", path);
2515 cputype = ntohl(*(uint32_t *)tmp);
2516 cpusubtype = ntohl(*(uint32_t *)(tmp + 4));
2517
2518 if (cputype == mycputype && cpusubtype == mycpusubtype) {
2519 IF_DEBUG(linker, debugBelch("loadArchive: found my archive in a fat archive\n"));
2520 nfat_offset = ntohl(*(uint32_t *)(tmp + 8));
2521 break;
2522 }
2523 }
2524
2525 if (nfat_offset == 0) {
2526 barf ("loadArchive: searched %d architectures, but no host arch found", (int)nfat_arch);
2527 }
2528 else {
2529 n = fseek( f, nfat_offset, SEEK_SET );
2530 if (n != 0)
2531 barf("loadArchive: Failed to seek to arch in `%s'", path);
2532 n = fread ( tmp, 1, 8, f );
2533 if (n != 8)
2534 barf("loadArchive: Failed reading header from `%s'", path);
2535 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2536 barf("loadArchive: couldn't find archive in `%s' at offset %d", path, nfat_offset);
2537 }
2538 }
2539 }
2540 else {
2541 barf("loadArchive: Neither an archive, nor a fat archive: `%s'", path);
2542 }
2543 #else
2544 else {
2545 barf("loadArchive: Not an archive: `%s'", path);
2546 }
2547 #endif
2548
2549 IF_DEBUG(linker, debugBelch("loadArchive: loading archive contents\n"));
2550
2551 while(1) {
2552 n = fread ( fileName, 1, 16, f );
2553 if (n != 16) {
2554 if (feof(f)) {
2555 IF_DEBUG(linker, debugBelch("loadArchive: EOF while reading from '%" PATH_FMT "'\n", path));
2556 break;
2557 }
2558 else {
2559 barf("loadArchive: Failed reading file name from `%s'", path);
2560 }
2561 }
2562
2563 #if defined(darwin_HOST_OS)
2564 if (strncmp(fileName, "!<arch>\n", 8) == 0) {
2565 IF_DEBUG(linker, debugBelch("loadArchive: found the start of another archive, breaking\n"));
2566 break;
2567 }
2568 #endif
2569
2570 n = fread ( tmp, 1, 12, f );
2571 if (n != 12)
2572 barf("loadArchive: Failed reading mod time from `%s'", path);
2573 n = fread ( tmp, 1, 6, f );
2574 if (n != 6)
2575 barf("loadArchive: Failed reading owner from `%s'", path);
2576 n = fread ( tmp, 1, 6, f );
2577 if (n != 6)
2578 barf("loadArchive: Failed reading group from `%s'", path);
2579 n = fread ( tmp, 1, 8, f );
2580 if (n != 8)
2581 barf("loadArchive: Failed reading mode from `%s'", path);
2582 n = fread ( tmp, 1, 10, f );
2583 if (n != 10)
2584 barf("loadArchive: Failed reading size from `%s'", path);
2585 tmp[10] = '\0';
2586 for (n = 0; isdigit(tmp[n]); n++);
2587 tmp[n] = '\0';
2588 memberSize = atoi(tmp);
2589
2590 IF_DEBUG(linker, debugBelch("loadArchive: size of this archive member is %d\n", memberSize));
2591 n = fread ( tmp, 1, 2, f );
2592 if (n != 2)
2593 barf("loadArchive: Failed reading magic from `%s'", path);
2594 if (strncmp(tmp, "\x60\x0A", 2) != 0)
2595 barf("loadArchive: Failed reading magic from `%s' at %ld. Got %c%c",
2596 path, ftell(f), tmp[0], tmp[1]);
2597
2598 isGnuIndex = 0;
2599 /* Check for BSD-variant large filenames */
2600 if (0 == strncmp(fileName, "#1/", 3)) {
2601 fileName[16] = '\0';
2602 if (isdigit(fileName[3])) {
2603 for (n = 4; isdigit(fileName[n]); n++);
2604 fileName[n] = '\0';
2605 thisFileNameSize = atoi(fileName + 3);
2606 memberSize -= thisFileNameSize;
2607 if (thisFileNameSize >= fileNameSize) {
2608 /* Double it to avoid potentially continually
2609 increasing it by 1 */
2610 fileNameSize = thisFileNameSize * 2;
2611 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2612 }
2613 n = fread ( fileName, 1, thisFileNameSize, f );
2614 if (n != (int)thisFileNameSize) {
2615 barf("loadArchive: Failed reading filename from `%s'",
2616 path);
2617 }
2618 fileName[thisFileNameSize] = 0;
2619
2620 /* On OS X at least, thisFileNameSize is the size of the
2621 fileName field, not the length of the fileName
2622 itself. */
2623 thisFileNameSize = strlen(fileName);
2624 }
2625 else {
2626 barf("loadArchive: BSD-variant filename size not found while reading filename from `%s'", path);
2627 }
2628 }
2629 /* Check for GNU file index file */
2630 else if (0 == strncmp(fileName, "//", 2)) {
2631 fileName[0] = '\0';
2632 thisFileNameSize = 0;
2633 isGnuIndex = 1;
2634 }
2635 /* Check for a file in the GNU file index */
2636 else if (fileName[0] == '/') {
2637 if (isdigit(fileName[1])) {
2638 int i;
2639
2640 for (n = 2; isdigit(fileName[n]); n++);
2641 fileName[n] = '\0';
2642 n = atoi(fileName + 1);
2643
2644 if (gnuFileIndex == NULL) {
2645 barf("loadArchive: GNU-variant filename without an index while reading from `%s'", path);
2646 }
2647 if (n < 0 || n > gnuFileIndexSize) {
2648 barf("loadArchive: GNU-variant filename offset %d out of range [0..%d] while reading filename from `%s'", n, gnuFileIndexSize, path);
2649 }
2650 if (n != 0 && gnuFileIndex[n - 1] != '\n') {
2651 barf("loadArchive: GNU-variant filename offset %d invalid (range [0..%d]) while reading filename from `%s'", n, gnuFileIndexSize, path);
2652 }
2653 for (i = n; gnuFileIndex[i] != '\n'; i++);
2654 thisFileNameSize = i - n - 1;
2655 if (thisFileNameSize >= fileNameSize) {
2656 /* Double it to avoid potentially continually
2657 increasing it by 1 */
2658 fileNameSize = thisFileNameSize * 2;
2659 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2660 }
2661 memcpy(fileName, gnuFileIndex + n, thisFileNameSize);
2662 fileName[thisFileNameSize] = '\0';
2663 }
2664 else if (fileName[1] == ' ') {
2665 fileName[0] = '\0';
2666 thisFileNameSize = 0;
2667 }
2668 else {
2669 barf("loadArchive: GNU-variant filename offset not found while reading filename from `%s'", path);
2670 }
2671 }
2672 /* Finally, the case where the filename field actually contains
2673 the filename */
2674 else {
2675 /* GNU ar terminates filenames with a '/', this allowing
2676 spaces in filenames. So first look to see if there is a
2677 terminating '/'. */
2678 for (thisFileNameSize = 0;
2679 thisFileNameSize < 16;
2680 thisFileNameSize++) {
2681 if (fileName[thisFileNameSize] == '/') {
2682 fileName[thisFileNameSize] = '\0';
2683 break;
2684 }
2685 }
2686 /* If we didn't find a '/', then a space teminates the
2687 filename. Note that if we don't find one, then
2688 thisFileNameSize ends up as 16, and we already have the
2689 '\0' at the end. */
2690 if (thisFileNameSize == 16) {
2691 for (thisFileNameSize = 0;
2692 thisFileNameSize < 16;
2693 thisFileNameSize++) {
2694 if (fileName[thisFileNameSize] == ' ') {
2695 fileName[thisFileNameSize] = '\0';
2696 break;
2697 }
2698 }
2699 }
2700 }
2701
2702 IF_DEBUG(linker,
2703 debugBelch("loadArchive: Found member file `%s'\n", fileName));
2704
2705 isObject = thisFileNameSize >= 2
2706 && fileName[thisFileNameSize - 2] == '.'
2707 && fileName[thisFileNameSize - 1] == 'o';
2708
2709 IF_DEBUG(linker, debugBelch("loadArchive: \tthisFileNameSize = %d\n", (int)thisFileNameSize));
2710 IF_DEBUG(linker, debugBelch("loadArchive: \tisObject = %d\n", isObject));
2711
2712 if (isObject) {
2713 char *archiveMemberName;
2714
2715 IF_DEBUG(linker, debugBelch("loadArchive: Member is an object file...loading...\n"));
2716
2717 /* We can't mmap from the archive directly, as object
2718 files need to be 8-byte aligned but files in .ar
2719 archives are 2-byte aligned. When possible we use mmap
2720 to get some anonymous memory, as on 64-bit platforms if
2721 we use malloc then we can be given memory above 2^32.
2722 In the mmap case we're probably wasting lots of space;
2723 we could do better. */
2724 #if defined(USE_MMAP)
2725 image = mmapForLinker(memberSize, MAP_ANONYMOUS, -1);
2726 #elif defined(mingw32_HOST_OS)
2727 // TODO: We would like to use allocateExec here, but allocateExec
2728 // cannot currently allocate blocks large enough.
2729 image = allocateImageAndTrampolines(path, fileName,
2730 #if defined(x86_64_HOST_ARCH)
2731 f,
2732 #endif
2733 memberSize);
2734 #elif defined(darwin_HOST_OS)
2735 /* See loadObj() */
2736 misalignment = machoGetMisalignment(f);
2737 image = stgMallocBytes(memberSize + misalignment, "loadArchive(image)");
2738 image += misalignment;
2739 #else
2740 image = stgMallocBytes(memberSize, "loadArchive(image)");
2741 #endif
2742
2743 #if !defined(mingw32_HOST_OS)
2744 /*
2745 * Note [thin archives on Windows]
2746 * This doesn't compile on Windows because it assumes
2747 * char* pathnames, and we use wchar_t* on Windows. It's
2748 * not trivial to fix, so I'm leaving it disabled on
2749 * Windows for now --SDM
2750 */
2751 if (isThin) {
2752 FILE *member;
2753 char *pathCopy, *dirName, *memberPath;
2754
2755 /* Allocate and setup the dirname of the archive. We'll need
2756 this to locate the thin member */
2757 pathCopy = stgMallocBytes(strlen(path) + 1, "loadArchive(file)");
2758 strcpy(pathCopy, path);
2759 dirName = dirname(pathCopy);
2760
2761 /* Append the relative member name to the dirname. This should be
2762 be the full path to the actual thin member. */
2763 memberPath = stgMallocBytes(
2764 strlen(path) + 1 + strlen(fileName) + 1, "loadArchive(file)");
2765 strcpy(memberPath, dirName);
2766 memberPath[strlen(dirName)] = '/';
2767 strcpy(memberPath + strlen(dirName) + 1, fileName);
2768
2769 member = pathopen(memberPath, WSTR("rb"));
2770 if (!member)
2771 barf("loadObj: can't read `%s'", path);
2772
2773 n = fread ( image, 1, memberSize, member );
2774 if (n != memberSize) {
2775 barf("loadArchive: error whilst reading `%s'", fileName);
2776 }
2777
2778 fclose(member);
2779 stgFree(memberPath);
2780 stgFree(pathCopy);
2781 }
2782 else
2783 #endif
2784 {
2785 n = fread ( image, 1, memberSize, f );
2786 if (n != memberSize) {
2787 barf("loadArchive: error whilst reading `%s'", path);
2788 }
2789 }
2790
2791 archiveMemberName = stgMallocBytes(pathlen(path) + thisFileNameSize + 3,
2792 "loadArchive(file)");
2793 sprintf(archiveMemberName, "%" PATH_FMT "(%.*s)",
2794 path, (int)thisFileNameSize, fileName);
2795
2796 oc = mkOc(path, image, memberSize, archiveMemberName
2797 #ifndef USE_MMAP
2798 #ifdef darwin_HOST_OS
2799 , misalignment
2800 #endif
2801 #endif
2802 );
2803
2804 stgFree(archiveMemberName);
2805
2806 if (0 == loadOc(oc)) {
2807 stgFree(fileName);
2808 fclose(f);
2809 return 0;
2810 } else {
2811 oc->next = objects;
2812 objects = oc;
2813 }
2814 }
2815 else if (isGnuIndex) {
2816 if (gnuFileIndex != NULL) {
2817 barf("loadArchive: GNU-variant index found, but already have an index, while reading filename from `%s'", path);
2818 }
2819 IF_DEBUG(linker, debugBelch("loadArchive: Found GNU-variant file index\n"));
2820 #ifdef USE_MMAP
2821 gnuFileIndex = mmapForLinker(memberSize + 1, MAP_ANONYMOUS, -1);
2822 #else
2823 gnuFileIndex = stgMallocBytes(memberSize + 1, "loadArchive(image)");
2824 #endif
2825 n = fread ( gnuFileIndex, 1, memberSize, f );
2826 if (n != memberSize) {
2827 barf("loadArchive: error whilst reading `%s'", path);
2828 }
2829 gnuFileIndex[memberSize] = '/';
2830 gnuFileIndexSize = memberSize;
2831 }
2832 else {
2833 IF_DEBUG(linker, debugBelch("loadArchive: '%s' does not appear to be an object file\n", fileName));
2834 if (!isThin || thisFileNameSize == 0) {
2835 n = fseek(f, memberSize, SEEK_CUR);
2836 if (n != 0)
2837 barf("loadArchive: error whilst seeking by %d in `%s'",
2838 memberSize, path);
2839 }
2840 }
2841
2842 /* .ar files are 2-byte aligned */
2843 if (!(isThin && thisFileNameSize > 0) && memberSize % 2) {
2844 IF_DEBUG(linker, debugBelch("loadArchive: trying to read one pad byte\n"));
2845 n = fread ( tmp, 1, 1, f );
2846 if (n != 1) {
2847 if (feof(f)) {
2848 IF_DEBUG(linker, debugBelch("loadArchive: found EOF while reading one pad byte\n"));
2849 break;
2850 }
2851 else {
2852 barf("loadArchive: Failed reading padding from `%s'", path);
2853 }
2854 }
2855 IF_DEBUG(linker, debugBelch("loadArchive: successfully read one pad byte\n"));
2856 }
2857 IF_DEBUG(linker, debugBelch("loadArchive: reached end of archive loading while loop\n"));
2858 }
2859
2860 fclose(f);
2861
2862 stgFree(fileName);
2863 if (gnuFileIndex != NULL) {
2864 #ifdef USE_MMAP
2865 munmap(gnuFileIndex, gnuFileIndexSize + 1);
2866 #else
2867 stgFree(gnuFileIndex);
2868 #endif
2869 }
2870
2871 IF_DEBUG(linker, debugBelch("loadArchive: done\n"));
2872 return 1;
2873 }
2874
2875 /* -----------------------------------------------------------------------------
2876 * Load an obj (populate the global symbol table, but don't resolve yet)
2877 *
2878 * Returns: 1 if ok, 0 on error.
2879 */
2880 HsInt
2881 loadObj( pathchar *path )
2882 {
2883 ObjectCode* oc;
2884 char *image;
2885 int fileSize;
2886 struct_stat st;
2887 int r;
2888 #ifdef USE_MMAP
2889 int fd;
2890 #else
2891 FILE *f;
2892 # if defined(darwin_HOST_OS)
2893 int misalignment;
2894 # endif
2895 #endif
2896 IF_DEBUG(linker, debugBelch("loadObj %" PATH_FMT "\n", path));
2897
2898 initLinker();
2899
2900 /* debugBelch("loadObj %s\n", path ); */
2901
2902 /* Check that we haven't already loaded this object.
2903 Ignore requests to load multiple times */
2904
2905 if (isAlreadyLoaded(path)) {
2906 IF_DEBUG(linker,
2907 debugBelch("ignoring repeated load of %" PATH_FMT "\n", path));
2908 return 1; /* success */
2909 }
2910
2911 r = pathstat(path, &st);
2912 if (r == -1) {
2913 IF_DEBUG(linker, debugBelch("File doesn't exist\n"));
2914 return 0;
2915 }
2916
2917 fileSize = st.st_size;
2918
2919 #ifdef USE_MMAP
2920 /* On many architectures malloc'd memory isn't executable, so we need to use mmap. */
2921
2922 #if defined(openbsd_HOST_OS)
2923 /* coverity[toctou] */
2924 fd = open(path, O_RDONLY, S_IRUSR);
2925 #else
2926 /* coverity[toctou] */
2927 fd = open(path, O_RDONLY);
2928 #endif
2929 if (fd == -1) {
2930 errorBelch("loadObj: can't open `%s'", path);
2931 return 0;
2932 }
2933
2934 image = mmapForLinker(fileSize, 0, fd);
2935 close(fd);
2936 if (image == NULL) return 0;
2937
2938 #else /* !USE_MMAP */
2939 /* load the image into memory */
2940 /* coverity[toctou] */
2941 f = pathopen(path, WSTR("rb"));
2942 if (!f) {
2943 errorBelch("loadObj: can't read `%" PATH_FMT "'", path);
2944 return 0;
2945 }
2946
2947 # if defined(mingw32_HOST_OS)
2948 // TODO: We would like to use allocateExec here, but allocateExec
2949 // cannot currently allocate blocks large enough.
2950 image = allocateImageAndTrampolines(path, "itself",
2951 #if defined(x86_64_HOST_ARCH)
2952 f,
2953 #endif
2954 fileSize);
2955 if (image == NULL) {
2956 fclose(f);
2957 return 0;
2958 }
2959 # elif defined(darwin_HOST_OS)
2960 // In a Mach-O .o file, all sections can and will be misaligned
2961 // if the total size of the headers is not a multiple of the
2962 // desired alignment. This is fine for .o files that only serve
2963 // as input for the static linker, but it's not fine for us,
2964 // as SSE (used by gcc for floating point) and Altivec require
2965 // 16-byte alignment.
2966 // We calculate the correct alignment from the header before
2967 // reading the file, and then we misalign image on purpose so
2968 // that the actual sections end up aligned again.
2969 misalignment = machoGetMisalignment(f);
2970 image = stgMallocBytes(fileSize + misalignment, "loadObj(image)");
2971 image += misalignment;
2972 # else
2973 image = stgMallocBytes(fileSize, "loadObj(image)");
2974 # endif
2975
2976 {
2977 int n;
2978 n = fread ( image, 1, fileSize, f );
2979 fclose(f);
2980 if (n != fileSize) {
2981 errorBelch("loadObj: error whilst reading `%" PATH_FMT "'", path);
2982 stgFree(image);
2983 return 0;
2984 }
2985 }
2986 #endif /* USE_MMAP */
2987
2988 oc = mkOc(path, image, fileSize, NULL
2989 #ifndef USE_MMAP
2990 #ifdef darwin_HOST_OS
2991 , misalignment
2992 #endif
2993 #endif
2994 );
2995
2996 if (! loadOc(oc)) {
2997 // failed; free everything we've allocated
2998 removeOcSymbols(oc);
2999 freeObjectCode(oc);
3000 return 0;
3001 }
3002
3003 oc->next = objects;
3004 objects = oc;
3005 return 1;
3006 }
3007
3008 static HsInt
3009 loadOc( ObjectCode* oc ) {
3010 int r;
3011
3012 IF_DEBUG(linker, debugBelch("loadOc: start\n"));
3013
3014 /* verify the in-memory image */
3015 # if defined(OBJFORMAT_ELF)
3016 r = ocVerifyImage_ELF ( oc );
3017 # elif defined(OBJFORMAT_PEi386)
3018 r = ocVerifyImage_PEi386 ( oc );
3019 # elif defined(OBJFORMAT_MACHO)
3020 r = ocVerifyImage_MachO ( oc );
3021 # else
3022 barf("loadObj: no verify method");
3023 # endif
3024 if (!r) {
3025 IF_DEBUG(linker, debugBelch("loadOc: ocVerifyImage_* failed\n"));
3026 return r;
3027 }
3028
3029 # if defined(OBJFORMAT_MACHO) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH))
3030 r = ocAllocateSymbolExtras_MachO ( oc );
3031 if (!r) {
3032 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_MachO failed\n"));
3033 return r;
3034 }
3035 # elif defined(OBJFORMAT_ELF) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH))
3036 r = ocAllocateSymbolExtras_ELF ( oc );
3037 if (!r) {
3038 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_ELF failed\n"));
3039 return r;
3040 }
3041 # elif defined(OBJFORMAT_PEi386) && defined(x86_64_HOST_ARCH)
3042 ocAllocateSymbolExtras_PEi386 ( oc );
3043 #endif
3044
3045 /* build the symbol list for this image */
3046 # if defined(OBJFORMAT_ELF)
3047 r = ocGetNames_ELF ( oc );
3048 # elif defined(OBJFORMAT_PEi386)
3049 r = ocGetNames_PEi386 ( oc );
3050 # elif defined(OBJFORMAT_MACHO)
3051 r = ocGetNames_MachO ( oc );
3052 # else
3053 barf("loadObj: no getNames method");
3054 # endif
3055 if (!r) {
3056 IF_DEBUG(linker, debugBelch("loadOc: ocGetNames_* failed\n"));
3057 return r;
3058 }
3059
3060 /* loaded, but not resolved yet */
3061 oc->status = OBJECT_LOADED;
3062 IF_DEBUG(linker, debugBelch("loadOc: done.\n"));
3063
3064 return 1;
3065 }
3066
3067 /* -----------------------------------------------------------------------------
3068 * resolve all the currently unlinked objects in memory
3069 *
3070 * Returns: 1 if ok, 0 on error.
3071 */
3072 HsInt
3073 resolveObjs( void )
3074 {
3075 ObjectCode *oc;
3076 int r;
3077
3078 IF_DEBUG(linker, debugBelch("resolveObjs: start\n"));
3079 initLinker();
3080
3081 for (oc = objects; oc; oc = oc->next) {
3082 if (oc->status != OBJECT_RESOLVED) {
3083 # if defined(OBJFORMAT_ELF)
3084 r = ocResolve_ELF ( oc );
3085 # elif defined(OBJFORMAT_PEi386)
3086 r = ocResolve_PEi386 ( oc );
3087 # elif defined(OBJFORMAT_MACHO)
3088 r = ocResolve_MachO ( oc );
3089 # else
3090 barf("resolveObjs: not implemented on this platform");
3091 # endif
3092 if (!r) { return r; }
3093
3094 // run init/init_array/ctors/mod_init_func
3095
3096 loading_obj = oc; // tells foreignExportStablePtr what to do
3097 #if defined(OBJFORMAT_ELF)
3098 r = ocRunInit_ELF ( oc );
3099 #elif defined(OBJFORMAT_PEi386)
3100 r = ocRunInit_PEi386 ( oc );
3101 #elif defined(OBJFORMAT_MACHO)
3102 r = ocRunInit_MachO ( oc );
3103 #else
3104 barf("resolveObjs: initializers not implemented on this platform");
3105 #endif
3106 loading_obj = NULL;
3107
3108 if (!r) { return r; }
3109
3110 oc->status = OBJECT_RESOLVED;
3111 }
3112 }
3113 IF_DEBUG(linker, debugBelch("resolveObjs: done\n"));
3114 return 1;
3115 }
3116
3117 /* -----------------------------------------------------------------------------
3118 * delete an object from the pool
3119 */
3120 HsInt
3121 unloadObj( pathchar *path )
3122 {
3123 ObjectCode *oc, *prev, *next;
3124 HsBool unloadedAnyObj = HS_BOOL_FALSE;
3125
3126 ASSERT(symhash != NULL);
3127 ASSERT(objects != NULL);
3128
3129 initLinker();
3130
3131 IF_DEBUG(linker, debugBelch("unloadObj: %" PATH_FMT "\n", path));
3132
3133 prev = NULL;
3134 for (oc = objects; oc; oc = next) {
3135 next = oc->next; // oc might be freed
3136
3137 if (!pathcmp(oc->fileName,path)) {
3138
3139 removeOcSymbols(oc);
3140
3141 if (prev == NULL) {
3142 objects = oc->next;
3143 } else {
3144 prev->next = oc->next;
3145 }
3146 oc->next = unloaded_objects;
3147 unloaded_objects = oc;
3148
3149 // Release any StablePtrs that were created when this
3150 // object module was initialized.
3151 {
3152 ForeignExportStablePtr *fe_ptr, *next;
3153
3154 for (fe_ptr = oc->stable_ptrs; fe_ptr != NULL; fe_ptr = next) {
3155 next = fe_ptr->next;
3156 freeStablePtr(fe_ptr->stable_ptr);
3157 stgFree(fe_ptr);
3158 }
3159 }
3160
3161 oc->status = OBJECT_UNLOADED;
3162
3163 /* This could be a member of an archive so continue
3164 * unloading other members. */
3165 unloadedAnyObj = HS_BOOL_TRUE;
3166 } else {
3167 prev = oc;
3168 }
3169 }
3170
3171 if (unloadedAnyObj) {
3172 return 1;
3173 }
3174 else {
3175 errorBelch("unloadObj: can't find `%" PATH_FMT "' to unload", path);
3176 return 0;
3177 }
3178 }
3179
3180 /* -----------------------------------------------------------------------------
3181 * Sanity checking. For each ObjectCode, maintain a list of address ranges
3182 * which may be prodded during relocation, and abort if we try and write
3183 * outside any of these.
3184 */
3185 static void
3186 addProddableBlock ( ObjectCode* oc, void* start, int size )
3187 {
3188 ProddableBlock* pb
3189 = stgMallocBytes(sizeof(ProddableBlock), "addProddableBlock");
3190
3191 IF_DEBUG(linker, debugBelch("addProddableBlock: %p %p %d\n", oc, start, size));
3192 ASSERT(size > 0);
3193 pb->start = start;
3194 pb->size = size;
3195 pb->next = oc->proddables;
3196 oc->proddables = pb;
3197 }
3198
3199 static void
3200 checkProddableBlock (ObjectCode *oc, void *addr, size_t size )
3201 {
3202 ProddableBlock* pb;
3203
3204 for (pb = oc->proddables; pb != NULL; pb = pb->next) {
3205 char* s = (char*)(pb->start);
3206 char* e = s + pb->size;
3207 char* a = (char*)addr;
3208 if (a >= s && (a+size) <= e) return;
3209 }
3210 barf("checkProddableBlock: invalid fixup in runtime linker: %p", addr);
3211 }
3212
3213 static void freeProddableBlocks (ObjectCode *oc)
3214 {
3215 ProddableBlock *pb, *next;
3216
3217 for (pb = oc->proddables; pb != NULL; pb = next) {
3218 next = pb->next;
3219 stgFree(pb);
3220 }
3221 oc->proddables = NULL;
3222 }
3223
3224 /* -----------------------------------------------------------------------------
3225 * Section management.
3226 */
3227 static void
3228 addSection ( ObjectCode* oc, SectionKind kind,
3229 void* start, void* end )
3230 {
3231 Section* s = stgMallocBytes(sizeof(Section), "addSection");
3232 s->start = start;
3233 s->end = end;
3234 s->kind = kind;
3235 s->next = oc->sections;
3236 oc->sections = s;
3237
3238 IF_DEBUG(linker, debugBelch("addSection: %p-%p (size %lld), kind %d\n",
3239 start, ((char*)end)-1, ((long long)(size_t)end) - ((long long)(size_t)start) + 1, kind ));
3240 }
3241
3242
3243 /* --------------------------------------------------------------------------
3244 * Symbol Extras.
3245 * This is about allocating a small chunk of memory for every symbol in the
3246 * object file. We make sure that the SymboLExtras are always "in range" of
3247 * limited-range PC-relative instructions on various platforms by allocating
3248 * them right next to the object code itself.
3249 */
3250
3251 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3252 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3253
3254 /*
3255 ocAllocateSymbolExtras
3256
3257 Allocate additional space at the end of the object file image to make room
3258 for jump islands (powerpc, x86_64, arm) and GOT entries (x86_64).
3259
3260 PowerPC relative branch instructions have a 24 bit displacement field.
3261 As PPC code is always 4-byte-aligned, this yields a +-32MB range.
3262 If a particular imported symbol is outside this range, we have to redirect
3263 the jump to a short piece of new code that just loads the 32bit absolute
3264 address and jumps there.
3265 On x86_64, PC-relative jumps and PC-relative accesses to the GOT are limited
3266 to 32 bits (+-2GB).
3267
3268 This function just allocates space for one SymbolExtra for every
3269 undefined symbol in the object file. The code for the jump islands is
3270 filled in by makeSymbolExtra below.
3271 */
3272
3273 static int ocAllocateSymbolExtras( ObjectCode* oc, int count, int first )
3274 {
3275 #ifdef USE_MMAP
3276 int pagesize, n, m;
3277 #endif
3278 int aligned;
3279 #ifndef USE_MMAP
3280 int misalignment = 0;
3281 #ifdef darwin_HOST_OS
3282 misalignment = oc->misalignment;
3283 #endif
3284 #endif
3285
3286 if( count > 0 )
3287 {
3288 // round up to the nearest 4
3289 aligned = (oc->fileSize + 3) & ~3;
3290
3291 #ifdef USE_MMAP
3292 pagesize = getpagesize();
3293 n = ROUND_UP( oc->fileSize, pagesize );
3294 m = ROUND_UP( aligned + sizeof (SymbolExtra) * count, pagesize );
3295
3296 /* we try to use spare space at the end of the last page of the
3297 * image for the jump islands, but if there isn't enough space
3298 * then we have to map some (anonymously, remembering MAP_32BIT).
3299 */
3300 if( m > n ) // we need to allocate more pages
3301 {
3302 if (USE_CONTIGUOUS_MMAP)
3303 {
3304 /* Keep image and symbol_extras contiguous */
3305 void *new = mmapForLinker(n + (sizeof(SymbolExtra) * count),
3306 MAP_ANONYMOUS, -1);
3307 if (new)
3308 {
3309 memcpy(new, oc->image, oc->fileSize);
3310 munmap(oc->image, n);
3311 oc->image = new;
3312 oc->fileSize = n + (sizeof(SymbolExtra) * count);
3313 oc->symbol_extras = (SymbolExtra *) (oc->image + n);
3314 }
3315 else {
3316 oc->symbol_extras = NULL;
3317 return 0;
3318 }
3319 }
3320 else
3321 {
3322 oc->symbol_extras = mmapForLinker(sizeof(SymbolExtra) * count,
3323 MAP_ANONYMOUS, -1);
3324 if (oc->symbol_extras == NULL) return 0;
3325 }
3326 }
3327 else
3328 {
3329 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3330 }
3331 #else
3332 oc->image -= misalignment;
3333 oc->image = stgReallocBytes( oc->image,
3334 misalignment +
3335 aligned + sizeof (SymbolExtra) * count,
3336 "ocAllocateSymbolExtras" );
3337 oc->image += misalignment;
3338
3339 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3340 #endif /* USE_MMAP */
3341
3342 memset( oc->symbol_extras, 0, sizeof (SymbolExtra) * count );
3343 }
3344 else
3345 oc->symbol_extras = NULL;
3346
3347 oc->first_symbol_extra = first;
3348 oc->n_symbol_extras = count;
3349
3350 return 1;
3351 }
3352
3353 #endif
3354 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3355
3356 #if defined(arm_HOST_ARCH)
3357
3358 static void
3359 ocFlushInstructionCache( ObjectCode *oc )
3360 {
3361 // Object code
3362 __clear_cache(oc->image, oc->image + oc->fileSize);
3363 // Jump islands
3364 __clear_cache(oc->symbol_extras, &oc->symbol_extras[oc->n_symbol_extras]);
3365 }
3366
3367 #endif
3368
3369 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3370 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3371
3372 static SymbolExtra* makeSymbolExtra( ObjectCode* oc,
3373 unsigned long symbolNumber,
3374 unsigned long target )
3375 {
3376 SymbolExtra *extra;
3377
3378 ASSERT( symbolNumber >= oc->first_symbol_extra
3379 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3380
3381 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3382
3383 #ifdef powerpc_HOST_ARCH
3384 // lis r12, hi16(target)
3385 extra->jumpIsland.lis_r12 = 0x3d80;
3386 extra->jumpIsland.hi_addr = target >> 16;
3387
3388 // ori r12, r12, lo16(target)
3389 extra->jumpIsland.ori_r12_r12 = 0x618c;
3390 extra->jumpIsland.lo_addr = target & 0xffff;
3391
3392 // mtctr r12
3393 extra->jumpIsland.mtctr_r12 = 0x7d8903a6;
3394
3395 // bctr
3396 extra->jumpIsland.bctr = 0x4e800420;
3397 #endif
3398 #ifdef x86_64_HOST_ARCH
3399 // jmp *-14(%rip)
3400 static uint8_t jmp[] = { 0xFF, 0x25, 0xF2, 0xFF, 0xFF, 0xFF };
3401 extra->addr = target;
3402 memcpy(extra->jumpIsland, jmp, 6);
3403 #endif
3404
3405 return extra;
3406 }
3407
3408 #endif
3409 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3410
3411 #ifdef arm_HOST_ARCH
3412 static SymbolExtra* makeArmSymbolExtra( ObjectCode* oc,
3413 unsigned long symbolNumber,
3414 unsigned long target,
3415 int fromThumb,
3416 int toThumb )
3417 {
3418 SymbolExtra *extra;
3419
3420 ASSERT( symbolNumber >= oc->first_symbol_extra
3421 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3422
3423 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3424
3425 // Make sure instruction mode bit is set properly
3426 if (toThumb)
3427 target |= 1;
3428 else
3429 target &= ~1;
3430
3431 if (!fromThumb) {
3432 // In ARM encoding:
3433 // movw r12, #0
3434 // movt r12, #0
3435 // bx r12
3436 uint32_t code[] = { 0xe300c000, 0xe340c000, 0xe12fff1c };
3437
3438 // Patch lower half-word into movw
3439 code[0] |= ((target>>12) & 0xf) << 16;
3440 code[0] |= target & 0xfff;
3441 // Patch upper half-word into movt
3442 target >>= 16;
3443 code[1] |= ((target>>12) & 0xf) << 16;
3444 code[1] |= target & 0xfff;
3445
3446 memcpy(extra->jumpIsland, code, 12);
3447
3448 } else {
3449 // In Thumb encoding:
3450 // movw r12, #0
3451 // movt r12, #0
3452 // bx r12
3453 uint16_t code[] = { 0xf240, 0x0c00,
3454 0xf2c0, 0x0c00,
3455 0x4760 };
3456
3457 // Patch lower half-word into movw
3458 code[0] |= (target>>12) & 0xf;
3459 code[0] |= ((target>>11) & 0x1) << 10;
3460 code[1] |= ((target>>8) & 0x7) << 12;
3461 code[1] |= target & 0xff;
3462 // Patch upper half-word into movt
3463 target >>= 16;
3464 code[2] |= (target>>12) & 0xf;
3465 code[2] |= ((target>>11) & 0x1) << 10;
3466 code[3] |= ((target>>8) & 0x7) << 12;
3467 code[3] |= target & 0xff;
3468
3469 memcpy(extra->jumpIsland, code, 10);
3470 }
3471
3472 return extra;
3473 }
3474 #endif // arm_HOST_ARCH
3475
3476 /* --------------------------------------------------------------------------
3477 * PowerPC specifics (instruction cache flushing)
3478 * ------------------------------------------------------------------------*/
3479
3480 #ifdef powerpc_HOST_ARCH
3481 /*
3482 ocFlushInstructionCache
3483
3484 Flush the data & instruction caches.
3485 Because the PPC has split data/instruction caches, we have to
3486 do that whenever we modify code at runtime.
3487 */
3488
3489 static void
3490 ocFlushInstructionCacheFrom(void* begin, size_t length)
3491 {
3492 size_t n = (length + 3) / 4;
3493 unsigned long* p = begin;
3494
3495 while (n--)
3496 {
3497 __asm__ volatile ( "dcbf 0,%0\n\t"
3498 "sync\n\t"
3499 "icbi 0,%0"
3500 :
3501 : "r" (p)
3502 );
3503 p++;
3504 }
3505 __asm__ volatile ( "sync\n\t"
3506 "isync"
3507 );
3508 }
3509
3510 static void
3511 ocFlushInstructionCache( ObjectCode *oc )
3512 {
3513 /* The main object code */
3514 ocFlushInstructionCacheFrom(oc->image
3515 #ifdef darwin_HOST_OS
3516 + oc->misalignment
3517 #endif
3518 , oc->fileSize);
3519
3520 /* Jump Islands */
3521 ocFlushInstructionCacheFrom(oc->symbol_extras, sizeof(SymbolExtra) * oc->n_symbol_extras);
3522 }
3523 #endif /* powerpc_HOST_ARCH */
3524
3525
3526 /* --------------------------------------------------------------------------
3527 * PEi386 specifics (Win32 targets)
3528 * ------------------------------------------------------------------------*/
3529
3530 /* The information for this linker comes from
3531 Microsoft Portable Executable
3532 and Common Object File Format Specification
3533 revision 5.1 January 1998
3534 which SimonM says comes from the MS Developer Network CDs.
3535
3536 It can be found there (on older CDs), but can also be found
3537 online at:
3538
3539 http://www.microsoft.com/hwdev/hardware/PECOFF.asp
3540
3541 (this is Rev 6.0 from February 1999).
3542
3543 Things move, so if that fails, try searching for it via
3544
3545 http://www.google.com/search?q=PE+COFF+specification
3546
3547 The ultimate reference for the PE format is the Winnt.h
3548 header file that comes with the Platform SDKs; as always,
3549 implementations will drift wrt their documentation.
3550
3551 A good background article on the PE format is Matt Pietrek's
3552 March 1994 article in Microsoft System Journal (MSJ)
3553 (Vol.9, No. 3): "Peering Inside the PE: A Tour of the
3554 Win32 Portable Executable File Format." The info in there
3555 has recently been updated in a two part article in
3556 MSDN magazine, issues Feb and March 2002,
3557 "Inside Windows: An In-Depth Look into the Win32 Portable
3558 Executable File Format"
3559
3560 John Levine's book "Linkers and Loaders" contains useful
3561 info on PE too.
3562 */
3563
3564
3565 #if defined(OBJFORMAT_PEi386)
3566
3567
3568
3569 typedef unsigned char UChar;
3570 typedef unsigned short UInt16;
3571 typedef unsigned int UInt32;
3572 typedef int Int32;
3573 typedef unsigned long long int UInt64;
3574
3575
3576 typedef
3577 struct {
3578 UInt16 Machine;
3579 UInt16 NumberOfSections;
3580 UInt32 TimeDateStamp;
3581 UInt32 PointerToSymbolTable;
3582 UInt32 NumberOfSymbols;
3583 UInt16 SizeOfOptionalHeader;
3584 UInt16 Characteristics;
3585 }
3586 COFF_header;
3587
3588 #define sizeof_COFF_header 20
3589
3590
3591 typedef
3592 struct {
3593 UChar Name[8];
3594 UInt32 VirtualSize;
3595 UInt32 VirtualAddress;
3596 UInt32 SizeOfRawData;
3597 UInt32 PointerToRawData;
3598 UInt32 PointerToRelocations;
3599 UInt32 PointerToLinenumbers;
3600 UInt16 NumberOfRelocations;
3601 UInt16 NumberOfLineNumbers;
3602 UInt32 Characteristics;
3603 }
3604 COFF_section;
3605
3606 #define sizeof_COFF_section 40
3607
3608
3609 typedef
3610 struct {
3611 UChar Name[8];
3612 UInt32 Value;
3613 UInt16 SectionNumber;
3614 UInt16 Type;
3615 UChar StorageClass;
3616 UChar NumberOfAuxSymbols;
3617 }
3618 COFF_symbol;
3619
3620 #define sizeof_COFF_symbol 18
3621
3622
3623 typedef
3624 struct {
3625 UInt32 VirtualAddress;
3626 UInt32 SymbolTableIndex;
3627 UInt16 Type;
3628 }
3629 COFF_reloc;
3630
3631 #define sizeof_COFF_reloc 10
3632
3633
3634 /* From PE spec doc, section 3.3.2 */
3635 /* Note use of MYIMAGE_* since IMAGE_* are already defined in
3636 windows.h -- for the same purpose, but I want to know what I'm
3637 getting, here. */
3638 #define MYIMAGE_FILE_RELOCS_STRIPPED 0x0001
3639 #define MYIMAGE_FILE_EXECUTABLE_IMAGE 0x0002
3640 #define MYIMAGE_FILE_DLL 0x2000
3641 #define MYIMAGE_FILE_SYSTEM 0x1000
3642 #define MYIMAGE_FILE_BYTES_REVERSED_HI 0x8000
3643 #define MYIMAGE_FILE_BYTES_REVERSED_LO 0x0080
3644 #define MYIMAGE_FILE_32BIT_MACHINE 0x0100
3645
3646 /* From PE spec doc, section 5.4.2 and 5.4.4 */
3647 #define MYIMAGE_SYM_CLASS_EXTERNAL 2
3648 #define MYIMAGE_SYM_CLASS_STATIC 3
3649 #define MYIMAGE_SYM_UNDEFINED 0
3650
3651 /* From PE spec doc, section 4.1 */
3652 #define MYIMAGE_SCN_CNT_CODE 0x00000020
3653 #define MYIMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
3654 #define MYIMAGE_SCN_LNK_NRELOC_OVFL 0x01000000
3655
3656 /* From PE spec doc, section 5.2.1 */
3657 #define MYIMAGE_REL_I386_DIR32 0x0006
3658 #define MYIMAGE_REL_I386_REL32 0x0014
3659
3660 static int verifyCOFFHeader ( COFF_header *hdr, pathchar *filename);
3661
3662 /* We assume file pointer is right at the
3663 beginning of COFF object.
3664 */
3665 static char *
3666 allocateImageAndTrampolines (
3667 pathchar* arch_name, char* member_name,
3668 #if defined(x86_64_HOST_ARCH)
3669 FILE* f,
3670 #endif
3671 int size )
3672 {
3673 char* image;
3674 #if defined(x86_64_HOST_ARCH)
3675 /* PeCoff contains number of symbols right in it's header, so
3676 we can reserve the room for symbolExtras right here. */
3677 COFF_header hdr;
3678 size_t n;
3679
3680 n = fread ( &hdr, 1, sizeof_COFF_header, f );
3681 if (n != sizeof( COFF_header )) {
3682 errorBelch("getNumberOfSymbols: error whilst reading `%s' header in `%S'",
3683 member_name, arch_name);
3684 return NULL;
3685 }
3686 fseek( f, -sizeof_COFF_header, SEEK_CUR );
3687
3688 if (!verifyCOFFHeader(&hdr, arch_name)) {
3689 return 0;
3690 }
3691
3692 /* We get back 8-byte aligned memory (is that guaranteed?), but
3693 the offsets to the sections within the file are all 4 mod 8
3694 (is that guaranteed?). We therefore need to offset the image
3695 by 4, so that all the pointers are 8-byte aligned, so that
3696 pointer tagging works. */
3697 /* For 32-bit case we don't need this, hence we use macro PEi386_IMAGE_OFFSET,
3698 which equals to 4 for 64-bit case and 0 for 32-bit case. */
3699 /* We allocate trampolines area for all symbols right behind
3700 image data, aligned on 8. */
3701 size = ((PEi386_IMAGE_OFFSET + size + 0x7) & ~0x7)
3702 + hdr.NumberOfSymbols * sizeof(SymbolExtra);
3703 #endif
3704 image = VirtualAlloc(NULL, size,
3705 MEM_RESERVE | MEM_COMMIT,
3706 PAGE_EXECUTE_READWRITE);
3707
3708 if (image == NULL) {
3709 errorBelch("%" PATH_FMT ": failed to allocate memory for image",
3710 arch_name);
3711 return NULL;
3712 }
3713
3714 return image + PEi386_IMAGE_OFFSET;
3715 }
3716
3717 /* We use myindex to calculate array addresses, rather than
3718 simply doing the normal subscript thing. That's because
3719 some of the above structs have sizes which are not
3720 a whole number of words. GCC rounds their sizes up to a
3721 whole number of words, which means that the address calcs
3722 arising from using normal C indexing or pointer arithmetic
3723 are just plain wrong. Sigh.
3724 */
3725 static UChar *
3726 myindex ( int scale, void* base, int index )
3727 {
3728 return
3729 ((UChar*)base) + scale * index;
3730 }
3731
3732
3733 static void
3734 printName ( UChar* name, UChar* strtab )
3735 {
3736 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3737 UInt32 strtab_offset = * (UInt32*)(name+4);
3738 debugBelch("%s", strtab + strtab_offset );
3739 } else {
3740 int i;
3741 for (i = 0; i < 8; i++) {
3742 if (name[i] == 0) break;
3743 debugBelch("%c", name[i] );
3744 }
3745 }
3746 }
3747
3748
3749 static void
3750 copyName ( UChar* name, UChar* strtab, UChar* dst, int dstSize )
3751 {
3752 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3753 UInt32 strtab_offset = * (UInt32*)(name+4);
3754 strncpy ( (char*)dst, (char*)strtab+strtab_offset, dstSize );
3755 dst[dstSize-1] = 0;
3756 } else {
3757 int i = 0;
3758 while (1) {
3759 if (i >= 8) break;
3760 if (name[i] == 0) break;
3761 dst[i] = name[i];
3762 i++;
3763 }
3764 dst[i] = 0;
3765 }
3766 }
3767
3768
3769 static UChar *
3770 cstring_from_COFF_symbol_name ( UChar* name, UChar* strtab )
3771 {
3772 UChar* newstr;
3773 /* If the string is longer than 8 bytes, look in the
3774 string table for it -- this will be correctly zero terminated.
3775 */
3776 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3777 UInt32 strtab_offset = * (UInt32*)(name+4);
3778 return ((UChar*)strtab) + strtab_offset;
3779 }
3780 /* Otherwise, if shorter than 8 bytes, return the original,
3781 which by defn is correctly terminated.
3782 */
3783 if (name[7]==0) return name;
3784 /* The annoying case: 8 bytes. Copy into a temporary
3785 (XXX which is never freed ...)
3786 */
3787 newstr = stgMallocBytes(9, "cstring_from_COFF_symbol_name");
3788 ASSERT(newstr);
3789 strncpy((char*)newstr,(char*)name,8);
3790 newstr[8] = 0;
3791 return newstr;
3792 }
3793
3794 /* Getting the name of a section is mildly tricky, so we make a
3795 function for it. Sadly, in one case we have to copy the string
3796 (when it is exactly 8 bytes long there's no trailing '\0'), so for
3797 consistency we *always* copy the string; the caller must free it
3798 */
3799 static char *
3800 cstring_from_section_name (UChar* name, UChar* strtab)
3801 {
3802 char *newstr;
3803
3804 if (name[0]=='/') {
3805 int strtab_offset = strtol((char*)name+1,NULL,10);
3806 int len = strlen(((char*)strtab) + strtab_offset);
3807
3808 newstr = stgMallocBytes(len+1, "cstring_from_section_symbol_name");
3809 strcpy((char*)newstr, (char*)((UChar*)strtab) + strtab_offset);
3810 return newstr;
3811 }
3812 else
3813 {
3814 newstr = stgMallocBytes(9, "cstring_from_section_symbol_name");
3815 ASSERT(newstr);
3816 strncpy((char*)newstr,(char*)name,8);
3817 newstr[8] = 0;
3818 return newstr;
3819 }
3820 }
3821
3822 /* Just compares the short names (first 8 chars) */
3823 static COFF_section *
3824 findPEi386SectionCalled ( ObjectCode* oc, UChar* name, UChar* strtab )
3825 {
3826 int i;
3827 rtsBool long_name = rtsFalse;
3828 COFF_header* hdr
3829 = (COFF_header*)(oc->image);
3830 COFF_section* sectab
3831 = (COFF_section*) (
3832 ((UChar*)(oc->image))
3833 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3834 );
3835 // String is longer than 8 bytes, swap in the proper
3836 // (NULL-terminated) version, and make a note that this
3837 // is a long name.
3838 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3839 UInt32 strtab_offset = * (UInt32*)(name+4);
3840 name = ((UChar*)strtab) + strtab_offset;
3841 long_name = rtsTrue;
3842 }
3843 for (i = 0; i < hdr->NumberOfSections; i++) {
3844 UChar* n1;
3845 UChar* n2;
3846 COFF_section* section_i
3847 = (COFF_section*)
3848 myindex ( sizeof_COFF_section, sectab, i );
3849 n1 = (UChar*) &(section_i->Name);
3850 n2 = name;
3851 // Long section names are prefixed with a slash, see
3852 // also cstring_from_section_name
3853 if (n1[0] == '/' && long_name) {
3854 // Long name check
3855 // We don't really want to make an assumption that the string
3856 // table indexes are the same, so we'll do a proper check.
3857 int n1_strtab_offset = strtol((char*)n1+1,NULL,10);
3858 n1 = (UChar*) (((char*)strtab) + n1_strtab_offset);
3859 if (0==strcmp((const char*)n1, (const char*)n2)) {
3860 return section_i;
3861 }
3862 } else if (n1[0] != '/' && !long_name) {
3863 // Short name check
3864 if (n1[0]==n2[0] && n1[1]==n2[1] && n1[2]==n2[2] &&
3865 n1[3]==n2[3] && n1[4]==n2[4] && n1[5]==n2[5] &&
3866 n1[6]==n2[6] && n1[7]==n2[7]) {
3867 return section_i;
3868 }
3869 } else {
3870 // guaranteed to mismatch, because we never attempt to link
3871 // in an executable where the section name may be truncated
3872 }
3873 }
3874
3875 return NULL;
3876 }
3877
3878 static void
3879 zapTrailingAtSign ( UChar* sym )
3880 {
3881 # define my_isdigit(c) ((c) >= '0' && (c) <= '9')
3882 int i, j;
3883 if (sym[0] == 0) return;
3884 i = 0;
3885 while (sym[i] != 0) i++;
3886 i--;
3887 j = i;
3888 while (j > 0 && my_isdigit(sym[j])) j--;
3889 if (j > 0 && sym[j] == '@' && j != i) sym[j] = 0;
3890 # undef my_isdigit
3891 }
3892
3893 static void *
3894 lookupSymbolInDLLs ( UChar *lbl )
3895 {
3896 OpenedDLL* o_dll;
3897 void *sym;
3898
3899 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
3900 /* debugBelch("look in %s for %s\n", o_dll->name, lbl); */
3901
3902 if (lbl[0] == '_') {
3903 /* HACK: if the name has an initial underscore, try stripping
3904 it off & look that up first. I've yet to verify whether there's
3905 a Rule that governs whether an initial '_' *should always* be
3906 stripped off when mapping from import lib name to the DLL name.
3907 */
3908 sym = GetProcAddress(o_dll->instance, (char*)(lbl+1));
3909 if (sym != NULL) {
3910 /*debugBelch("found %s in %s\n", lbl+1,o_dll->name);*/
3911 return sym;
3912 }
3913 }
3914
3915 /* Ticket #2283.
3916 Long description: http://support.microsoft.com/kb/132044
3917 tl;dr:
3918 If C/C++ compiler sees __declspec(dllimport) ... foo ...
3919 it generates call *__imp_foo, and __imp_foo here has exactly
3920 the same semantics as in __imp_foo = GetProcAddress(..., "foo")
3921 */
3922 if (sym == NULL && strncmp ((const char*)lbl, "__imp_", 6) == 0) {
3923 sym = GetProcAddress(o_dll->instance, (char*)(lbl+6));
3924 if (sym != NULL) {
3925 IndirectAddr* ret;
3926 ret = stgMallocBytes( sizeof(IndirectAddr), "lookupSymbolInDLLs" );
3927 ret->addr = sym;
3928 ret->next = indirects;
3929 indirects = ret;
3930 errorBelch("warning: %s from %S is linked instead of %s",
3931 (char*)(lbl+6), o_dll->name, (char*)lbl);
3932 return (void*) & ret->addr;
3933 }
3934 }
3935
3936 sym = GetProcAddress(o_dll->instance, (char*)lbl);
3937 if (sym != NULL) {
3938 /*debugBelch("found %s in %s\n", lbl,o_dll->name);*/
3939 return sym;
3940 }
3941 }
3942 return NULL;
3943 }
3944
3945 static int
3946 verifyCOFFHeader (COFF_header *hdr, pathchar *fileName)
3947 {
3948 #if defined(i386_HOST_ARCH)
3949 if (hdr->Machine != 0x14c) {
3950 errorBelch("%" PATH_FMT ": Not x86 PEi386", fileName);
3951 return 0;
3952 }
3953 #elif defined(x86_64_HOST_ARCH)
3954 if (hdr->Machine != 0x8664) {
3955 errorBelch("%" PATH_FMT ": Not x86_64 PEi386", fileName);
3956 return 0;
3957 }
3958 #else
3959 errorBelch("PEi386 not supported on this arch");
3960 #endif
3961
3962 if (hdr->SizeOfOptionalHeader != 0) {
3963 errorBelch("%" PATH_FMT ": PEi386 with nonempty optional header",
3964 fileName);
3965 return 0;
3966 }
3967 if ( /* (hdr->Characteristics & MYIMAGE_FILE_RELOCS_STRIPPED) || */
3968 (hdr->Characteristics & MYIMAGE_FILE_EXECUTABLE_IMAGE) ||
3969 (hdr->Characteristics & MYIMAGE_FILE_DLL) ||
3970 (hdr->Characteristics & MYIMAGE_FILE_SYSTEM) ) {
3971 errorBelch("%" PATH_FMT ": Not a PEi386 object file", fileName);
3972 return 0;
3973 }
3974 if ( (hdr->Characteristics & MYIMAGE_FILE_BYTES_REVERSED_HI)
3975 /* || !(hdr->Characteristics & MYIMAGE_FILE_32BIT_MACHINE) */ ) {
3976 errorBelch("%" PATH_FMT ": Invalid PEi386 word size or endiannness: %d",
3977 fileName,
3978 (int)(hdr->Characteristics));
3979 return 0;
3980 }
3981 return 1;
3982 }
3983
3984 static int
3985 ocVerifyImage_PEi386 ( ObjectCode* oc )
3986 {
3987 int i;
3988 UInt32 j, noRelocs;
3989 COFF_header* hdr;
3990 COFF_section* sectab;
3991 COFF_symbol* symtab;
3992 UChar* strtab;
3993 /* debugBelch("\nLOADING %s\n", oc->fileName); */
3994 hdr = (COFF_header*)(oc->image);
3995 sectab = (COFF_section*) (
3996 ((UChar*)(oc->image))
3997 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3998 );
3999 symtab = (COFF_symbol*) (
4000 ((UChar*)(oc->image))
4001 + hdr->PointerToSymbolTable
4002 );
4003 strtab = ((UChar*)symtab)
4004 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
4005
4006 if (!verifyCOFFHeader(hdr, oc->fileName)) {
4007 return 0;
4008 }
4009
4010 /* If the string table size is way crazy, this might indicate that
4011 there are more than 64k relocations, despite claims to the
4012 contrary. Hence this test. */
4013 /* debugBelch("strtab size %d\n", * (UInt32*)strtab); */
4014 #if 0
4015 if ( (*(UInt32*)strtab) > 600000 ) {
4016 /* Note that 600k has no special significance other than being
4017 big enough to handle the almost-2MB-sized lumps that
4018 constitute HSwin32*.o. */
4019 debugBelch("PEi386 object has suspiciously large string table; > 64k relocs?");
4020 return 0;
4021 }
4022 #endif
4023
4024 /* No further verification after this point; only debug printing. */
4025 i = 0;
4026 IF_DEBUG(linker, i=1);
4027 if (i == 0) return 1;
4028
4029 debugBelch( "sectab offset = %" FMT_Int "\n", ((UChar*)sectab) - ((UChar*)hdr) );
4030 debugBelch( "symtab offset = %" FMT_Int "\n", ((UChar*)symtab) - ((UChar*)hdr) );
4031 debugBelch( "strtab offset = %" FMT_Int "\n", ((UChar*)strtab) - ((UChar*)hdr) );
4032
4033 debugBelch("\n" );
4034 debugBelch( "Machine: 0x%x\n", (UInt32)(hdr->Machine) );
4035 debugBelch( "# sections: %d\n", (UInt32)(hdr->NumberOfSections) );
4036 debugBelch( "time/date: 0x%x\n", (UInt32)(hdr->TimeDateStamp) );
4037 debugBelch( "symtab offset: %d\n", (UInt32)(hdr->PointerToSymbolTable) );
4038 debugBelch( "# symbols: %d\n", (UInt32)(hdr->NumberOfSymbols) );
4039 debugBelch( "sz of opt hdr: %d\n", (UInt32)(hdr->SizeOfOptionalHeader) );
4040 debugBelch( "characteristics: 0x%x\n", (UInt32)(hdr->Characteristics) );
4041
4042 /* Print the section table. */
4043 debugBelch("\n" );
4044 for (i = 0; i < hdr->NumberOfSections; i++) {