Make the linker more robust to errors
[ghc.git] / rts / Linker.c
1 /* -----------------------------------------------------------------------------
2 *
3 * (c) The GHC Team, 2000-2012
4 *
5 * RTS Object Linker
6 *
7 * ---------------------------------------------------------------------------*/
8
9 #if 0
10 #include "PosixSource.h"
11 #endif
12
13 /* Linux needs _GNU_SOURCE to get RTLD_DEFAULT from <dlfcn.h> and
14 MREMAP_MAYMOVE from <sys/mman.h>.
15 */
16 #if defined(__linux__) || defined(__GLIBC__)
17 #define _GNU_SOURCE 1
18 #endif
19
20 #include "Rts.h"
21 #include "HsFFI.h"
22
23 #include "sm/Storage.h"
24 #include "Stats.h"
25 #include "Hash.h"
26 #include "LinkerInternals.h"
27 #include "RtsUtils.h"
28 #include "Trace.h"
29 #include "StgPrimFloat.h" // for __int_encodeFloat etc.
30 #include "Proftimer.h"
31 #include "GetEnv.h"
32 #include "Stable.h"
33
34 #if !defined(mingw32_HOST_OS)
35 #include "posix/Signals.h"
36 #endif
37
38 // get protos for is*()
39 #include <ctype.h>
40
41 #ifdef HAVE_SYS_TYPES_H
42 #include <sys/types.h>
43 #endif
44
45 #include <inttypes.h>
46 #include <stdlib.h>
47 #include <string.h>
48 #include <stdio.h>
49 #include <assert.h>
50 #include <libgen.h>
51
52 #ifdef HAVE_SYS_STAT_H
53 #include <sys/stat.h>
54 #endif
55
56 #if defined(HAVE_DLFCN_H)
57 #include <dlfcn.h>
58 #endif
59
60 #if defined(cygwin32_HOST_OS)
61 #ifdef HAVE_DIRENT_H
62 #include <dirent.h>
63 #endif
64
65 #ifdef HAVE_SYS_TIME_H
66 #include <sys/time.h>
67 #endif
68 #include <regex.h>
69 #include <sys/fcntl.h>
70 #include <sys/termios.h>
71 #include <sys/utime.h>
72 #include <sys/utsname.h>
73 #include <sys/wait.h>
74 #endif
75
76 #if (defined(powerpc_HOST_ARCH) && defined(linux_HOST_OS)) \
77 || (!defined(powerpc_HOST_ARCH) && \
78 ( defined(linux_HOST_OS) || defined(freebsd_HOST_OS) || \
79 defined(dragonfly_HOST_OS) || defined(netbsd_HOST_OS ) || \
80 defined(openbsd_HOST_OS ) || defined(darwin_HOST_OS ) || \
81 defined(kfreebsdgnu_HOST_OS) || defined(gnu_HOST_OS)))
82 /* Don't use mmap on powerpc_HOST_ARCH as mmap doesn't support
83 * reallocating but we need to allocate jump islands just after each
84 * object images. Otherwise relative branches to jump islands can fail
85 * due to 24-bits displacement overflow.
86 */
87 #define USE_MMAP
88 #include <fcntl.h>
89 #include <sys/mman.h>
90
91 #ifdef HAVE_UNISTD_H
92 #include <unistd.h>
93 #endif
94
95 #endif
96
97
98 /* PowerPC has relative branch instructions with only 24 bit displacements
99 * and therefore needs jump islands contiguous with each object code module.
100 */
101 #if (defined(USE_MMAP) && defined(powerpc_HOST_ARCH) && defined(linux_HOST_OS))
102 #define USE_CONTIGUOUS_MMAP 1
103 #else
104 #define USE_CONTIGUOUS_MMAP 0
105 #endif
106
107 #if defined(linux_HOST_OS) || defined(solaris2_HOST_OS) || defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS) || defined(netbsd_HOST_OS) || defined(openbsd_HOST_OS) || defined(gnu_HOST_OS)
108 # define OBJFORMAT_ELF
109 # include <regex.h> // regex is already used by dlopen() so this is OK
110 // to use here without requiring an additional lib
111 #elif defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
112 # define OBJFORMAT_PEi386
113 # include <windows.h>
114 # include <math.h>
115 #elif defined(darwin_HOST_OS)
116 # define OBJFORMAT_MACHO
117 # include <regex.h>
118 # include <mach/machine.h>
119 # include <mach-o/fat.h>
120 # include <mach-o/loader.h>
121 # include <mach-o/nlist.h>
122 # include <mach-o/reloc.h>
123 #if !defined(HAVE_DLFCN_H)
124 # include <mach-o/dyld.h>
125 #endif
126 #if defined(powerpc_HOST_ARCH)
127 # include <mach-o/ppc/reloc.h>
128 #endif
129 #if defined(x86_64_HOST_ARCH)
130 # include <mach-o/x86_64/reloc.h>
131 #endif
132 #endif
133
134 #if defined(x86_64_HOST_ARCH) && defined(darwin_HOST_OS)
135 #define ALWAYS_PIC
136 #endif
137
138 #if defined(dragonfly_HOST_OS)
139 #include <sys/tls.h>
140 #endif
141
142 typedef struct _RtsSymbolInfo {
143 void *value;
144 const ObjectCode *owner;
145 HsBool weak;
146 } RtsSymbolInfo;
147
148 /* Hash table mapping symbol names to RtsSymbolInfo */
149 static /*Str*/HashTable *symhash;
150
151 /* List of currently loaded objects */
152 ObjectCode *objects = NULL; /* initially empty */
153
154 /* List of objects that have been unloaded via unloadObj(), but are waiting
155 to be actually freed via checkUnload() */
156 ObjectCode *unloaded_objects = NULL; /* initially empty */
157
158 /* Type of the initializer */
159 typedef void (*init_t) (int argc, char **argv, char **env);
160
161 static HsInt isAlreadyLoaded( pathchar *path );
162 static HsInt loadOc( ObjectCode* oc );
163 static ObjectCode* mkOc( pathchar *path, char *image, int imageSize,
164 char *archiveMemberName
165 #ifndef USE_MMAP
166 #ifdef darwin_HOST_OS
167 , int misalignment
168 #endif
169 #endif
170 );
171
172 // Use wchar_t for pathnames on Windows (#5697)
173 #if defined(mingw32_HOST_OS)
174 #define pathcmp wcscmp
175 #define pathlen wcslen
176 #define pathopen _wfopen
177 #define pathstat _wstat
178 #define struct_stat struct _stat
179 #define open wopen
180 #define WSTR(s) L##s
181 #else
182 #define pathcmp strcmp
183 #define pathlen strlen
184 #define pathopen fopen
185 #define pathstat stat
186 #define struct_stat struct stat
187 #define WSTR(s) s
188 #endif
189
190 static pathchar* pathdup(pathchar *path)
191 {
192 pathchar *ret;
193 #if defined(mingw32_HOST_OS)
194 ret = wcsdup(path);
195 #else
196 /* sigh, strdup() isn't a POSIX function, so do it the long way */
197 ret = stgMallocBytes( strlen(path)+1, "loadObj" );
198 strcpy(ret, path);
199 #endif
200 return ret;
201 }
202
203
204 #if defined(OBJFORMAT_ELF)
205 static int ocVerifyImage_ELF ( ObjectCode* oc );
206 static int ocGetNames_ELF ( ObjectCode* oc );
207 static int ocResolve_ELF ( ObjectCode* oc );
208 static int ocRunInit_ELF ( ObjectCode* oc );
209 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
210 static int ocAllocateSymbolExtras_ELF ( ObjectCode* oc );
211 #endif
212 #elif defined(OBJFORMAT_PEi386)
213 static int ocVerifyImage_PEi386 ( ObjectCode* oc );
214 static int ocGetNames_PEi386 ( ObjectCode* oc );
215 static int ocResolve_PEi386 ( ObjectCode* oc );
216 static int ocRunInit_PEi386 ( ObjectCode* oc );
217 static void *lookupSymbolInDLLs ( unsigned char *lbl );
218 static void zapTrailingAtSign ( unsigned char *sym );
219 static char *allocateImageAndTrampolines (
220 #if defined(x86_64_HOST_ARCH)
221 FILE* f, pathchar* arch_name, char* member_name,
222 #endif
223 int size );
224 #if defined(x86_64_HOST_ARCH)
225 static int ocAllocateSymbolExtras_PEi386 ( ObjectCode* oc );
226 static size_t makeSymbolExtra_PEi386( ObjectCode* oc, size_t, char* symbol );
227 #define PEi386_IMAGE_OFFSET 4
228 #else
229 #define PEi386_IMAGE_OFFSET 0
230 #endif
231 #elif defined(OBJFORMAT_MACHO)
232 static int ocVerifyImage_MachO ( ObjectCode* oc );
233 static int ocGetNames_MachO ( ObjectCode* oc );
234 static int ocResolve_MachO ( ObjectCode* oc );
235 static int ocRunInit_MachO ( ObjectCode* oc );
236
237 #ifndef USE_MMAP
238 static int machoGetMisalignment( FILE * );
239 #endif
240 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
241 static int ocAllocateSymbolExtras_MachO ( ObjectCode* oc );
242 #endif
243 #ifdef powerpc_HOST_ARCH
244 static void machoInitSymbolsWithoutUnderscore( void );
245 #endif
246 #endif
247
248 static void freeProddableBlocks (ObjectCode *oc);
249
250 /* on x86_64 we have a problem with relocating symbol references in
251 * code that was compiled without -fPIC. By default, the small memory
252 * model is used, which assumes that symbol references can fit in a
253 * 32-bit slot. The system dynamic linker makes this work for
254 * references to shared libraries by either (a) allocating a jump
255 * table slot for code references, or (b) moving the symbol at load
256 * time (and copying its contents, if necessary) for data references.
257 *
258 * We unfortunately can't tell whether symbol references are to code
259 * or data. So for now we assume they are code (the vast majority
260 * are), and allocate jump-table slots. Unfortunately this will
261 * SILENTLY generate crashing code for data references. This hack is
262 * enabled by X86_64_ELF_NONPIC_HACK.
263 *
264 * One workaround is to use shared Haskell libraries. This is
265 * coming. Another workaround is to keep the static libraries but
266 * compile them with -fPIC, because that will generate PIC references
267 * to data which can be relocated. The PIC code is still too green to
268 * do this systematically, though.
269 *
270 * See bug #781
271 * See thread http://www.haskell.org/pipermail/cvs-ghc/2007-September/038458.html
272 *
273 * Naming Scheme for Symbol Macros
274 *
275 * SymI_*: symbol is internal to the RTS. It resides in an object
276 * file/library that is statically.
277 * SymE_*: symbol is external to the RTS library. It might be linked
278 * dynamically.
279 *
280 * Sym*_HasProto : the symbol prototype is imported in an include file
281 * or defined explicitly
282 * Sym*_NeedsProto: the symbol is undefined and we add a dummy
283 * default proto extern void sym(void);
284 */
285 #define X86_64_ELF_NONPIC_HACK 1
286
287 /* Link objects into the lower 2Gb on x86_64. GHC assumes the
288 * small memory model on this architecture (see gcc docs,
289 * -mcmodel=small).
290 *
291 * MAP_32BIT not available on OpenBSD/amd64
292 */
293 #if defined(x86_64_HOST_ARCH) && defined(MAP_32BIT)
294 #define TRY_MAP_32BIT MAP_32BIT
295 #else
296 #define TRY_MAP_32BIT 0
297 #endif
298
299 /*
300 * Due to the small memory model (see above), on x86_64 we have to map
301 * all our non-PIC object files into the low 2Gb of the address space
302 * (why 2Gb and not 4Gb? Because all addresses must be reachable
303 * using a 32-bit signed PC-relative offset). On Linux we can do this
304 * using the MAP_32BIT flag to mmap(), however on other OSs
305 * (e.g. *BSD, see #2063, and also on Linux inside Xen, see #2512), we
306 * can't do this. So on these systems, we have to pick a base address
307 * in the low 2Gb of the address space and try to allocate memory from
308 * there.
309 *
310 * We pick a default address based on the OS, but also make this
311 * configurable via an RTS flag (+RTS -xm)
312 */
313 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
314
315 #if defined(MAP_32BIT)
316 // Try to use MAP_32BIT
317 #define MMAP_32BIT_BASE_DEFAULT 0
318 #else
319 // A guess: 1Gb.
320 #define MMAP_32BIT_BASE_DEFAULT 0x40000000
321 #endif
322
323 static void *mmap_32bit_base = (void *)MMAP_32BIT_BASE_DEFAULT;
324 #endif
325
326 /* MAP_ANONYMOUS is MAP_ANON on some systems, e.g. OpenBSD */
327 #if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
328 #define MAP_ANONYMOUS MAP_ANON
329 #endif
330
331 /* -----------------------------------------------------------------------------
332 * Built-in symbols from the RTS
333 */
334
335 typedef struct _RtsSymbolVal {
336 char *lbl;
337 void *addr;
338 } RtsSymbolVal;
339
340 #define Maybe_Stable_Names SymI_HasProto(stg_mkWeakzh) \
341 SymI_HasProto(stg_mkWeakNoFinalizzerzh) \
342 SymI_HasProto(stg_addCFinalizzerToWeakzh) \
343 SymI_HasProto(stg_makeStableNamezh) \
344 SymI_HasProto(stg_finalizzeWeakzh)
345
346 #if !defined (mingw32_HOST_OS)
347 #define RTS_POSIX_ONLY_SYMBOLS \
348 SymI_HasProto(__hscore_get_saved_termios) \
349 SymI_HasProto(__hscore_set_saved_termios) \
350 SymI_HasProto(shutdownHaskellAndSignal) \
351 SymI_HasProto(signal_handlers) \
352 SymI_HasProto(stg_sig_install) \
353 SymI_HasProto(rtsTimerSignal) \
354 SymI_HasProto(atexit) \
355 SymI_NeedsProto(nocldstop)
356 #endif
357
358 #if defined (cygwin32_HOST_OS)
359 #define RTS_MINGW_ONLY_SYMBOLS /**/
360 /* Don't have the ability to read import libs / archives, so
361 * we have to stupidly list a lot of what libcygwin.a
362 * exports; sigh.
363 */
364 #define RTS_CYGWIN_ONLY_SYMBOLS \
365 SymI_HasProto(regfree) \
366 SymI_HasProto(regexec) \
367 SymI_HasProto(regerror) \
368 SymI_HasProto(regcomp) \
369 SymI_HasProto(__errno) \
370 SymI_HasProto(access) \
371 SymI_HasProto(chmod) \
372 SymI_HasProto(chdir) \
373 SymI_HasProto(close) \
374 SymI_HasProto(creat) \
375 SymI_HasProto(dup) \
376 SymI_HasProto(dup2) \
377 SymI_HasProto(fstat) \
378 SymI_HasProto(fcntl) \
379 SymI_HasProto(getcwd) \
380 SymI_HasProto(getenv) \
381 SymI_HasProto(lseek) \
382 SymI_HasProto(open) \
383 SymI_HasProto(fpathconf) \
384 SymI_HasProto(pathconf) \
385 SymI_HasProto(stat) \
386 SymI_HasProto(pow) \
387 SymI_HasProto(tanh) \
388 SymI_HasProto(cosh) \
389 SymI_HasProto(sinh) \
390 SymI_HasProto(atan) \
391 SymI_HasProto(acos) \
392 SymI_HasProto(asin) \
393 SymI_HasProto(tan) \
394 SymI_HasProto(cos) \
395 SymI_HasProto(sin) \
396 SymI_HasProto(exp) \
397 SymI_HasProto(log) \
398 SymI_HasProto(sqrt) \
399 SymI_HasProto(localtime_r) \
400 SymI_HasProto(gmtime_r) \
401 SymI_HasProto(mktime) \
402 SymI_NeedsProto(_imp___tzname) \
403 SymI_HasProto(gettimeofday) \
404 SymI_HasProto(timezone) \
405 SymI_HasProto(tcgetattr) \
406 SymI_HasProto(tcsetattr) \
407 SymI_HasProto(memcpy) \
408 SymI_HasProto(memmove) \
409 SymI_HasProto(realloc) \
410 SymI_HasProto(malloc) \
411 SymI_HasProto(free) \
412 SymI_HasProto(fork) \
413 SymI_HasProto(lstat) \
414 SymI_HasProto(isatty) \
415 SymI_HasProto(mkdir) \
416 SymI_HasProto(opendir) \
417 SymI_HasProto(readdir) \
418 SymI_HasProto(rewinddir) \
419 SymI_HasProto(closedir) \
420 SymI_HasProto(link) \
421 SymI_HasProto(mkfifo) \
422 SymI_HasProto(pipe) \
423 SymI_HasProto(read) \
424 SymI_HasProto(rename) \
425 SymI_HasProto(rmdir) \
426 SymI_HasProto(select) \
427 SymI_HasProto(system) \
428 SymI_HasProto(write) \
429 SymI_HasProto(strcmp) \
430 SymI_HasProto(strcpy) \
431 SymI_HasProto(strncpy) \
432 SymI_HasProto(strerror) \
433 SymI_HasProto(sigaddset) \
434 SymI_HasProto(sigemptyset) \
435 SymI_HasProto(sigprocmask) \
436 SymI_HasProto(umask) \
437 SymI_HasProto(uname) \
438 SymI_HasProto(unlink) \
439 SymI_HasProto(utime) \
440 SymI_HasProto(waitpid)
441
442 #elif defined(mingw32_HOST_OS)
443 #define RTS_POSIX_ONLY_SYMBOLS /**/
444 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
445
446 #if HAVE_GETTIMEOFDAY
447 #define RTS_MINGW_GETTIMEOFDAY_SYM SymI_NeedsProto(gettimeofday)
448 #else
449 #define RTS_MINGW_GETTIMEOFDAY_SYM /**/
450 #endif
451
452 #if HAVE___MINGW_VFPRINTF
453 #define RTS___MINGW_VFPRINTF_SYM SymI_HasProto(__mingw_vfprintf)
454 #else
455 #define RTS___MINGW_VFPRINTF_SYM /**/
456 #endif
457
458 #if defined(i386_HOST_ARCH)
459 #define RTS_WIN32_ONLY(X) X
460 #else
461 #define RTS_WIN32_ONLY(X) /**/
462 #endif
463
464 #if defined(x86_64_HOST_ARCH)
465 #define RTS_WIN64_ONLY(X) X
466 #else
467 #define RTS_WIN64_ONLY(X) /**/
468 #endif
469
470 /* These are statically linked from the mingw libraries into the ghc
471 executable, so we have to employ this hack. */
472 #define RTS_MINGW_ONLY_SYMBOLS \
473 SymI_HasProto(stg_asyncReadzh) \
474 SymI_HasProto(stg_asyncWritezh) \
475 SymI_HasProto(stg_asyncDoProczh) \
476 SymI_HasProto(getWin32ProgArgv) \
477 SymI_HasProto(setWin32ProgArgv) \
478 SymI_HasProto(memset) \
479 SymI_HasProto(inet_ntoa) \
480 SymI_HasProto(inet_addr) \
481 SymI_HasProto(htonl) \
482 SymI_HasProto(recvfrom) \
483 SymI_HasProto(listen) \
484 SymI_HasProto(bind) \
485 SymI_HasProto(shutdown) \
486 SymI_HasProto(connect) \
487 SymI_HasProto(htons) \
488 SymI_HasProto(ntohs) \
489 SymI_HasProto(getservbyname) \
490 SymI_HasProto(getservbyport) \
491 SymI_HasProto(getprotobynumber) \
492 SymI_HasProto(getprotobyname) \
493 SymI_HasProto(gethostbyname) \
494 SymI_HasProto(gethostbyaddr) \
495 SymI_HasProto(gethostname) \
496 SymI_HasProto(strcpy) \
497 SymI_HasProto(strncpy) \
498 SymI_HasProto(abort) \
499 RTS_WIN32_ONLY(SymI_NeedsProto(_alloca)) \
500 SymI_HasProto(isxdigit) \
501 SymI_HasProto(isupper) \
502 SymI_HasProto(ispunct) \
503 SymI_HasProto(islower) \
504 SymI_HasProto(isspace) \
505 SymI_HasProto(isprint) \
506 SymI_HasProto(isdigit) \
507 SymI_HasProto(iscntrl) \
508 SymI_HasProto(isalpha) \
509 SymI_HasProto(isalnum) \
510 SymI_HasProto(isascii) \
511 RTS___MINGW_VFPRINTF_SYM \
512 SymI_HasProto(strcmp) \
513 SymI_HasProto(memmove) \
514 SymI_HasProto(realloc) \
515 SymI_HasProto(malloc) \
516 SymI_HasProto(pow) \
517 SymI_HasProto(tanh) \
518 SymI_HasProto(cosh) \
519 SymI_HasProto(sinh) \
520 SymI_HasProto(atan) \
521 SymI_HasProto(acos) \
522 SymI_HasProto(asin) \
523 SymI_HasProto(tan) \
524 SymI_HasProto(cos) \
525 SymI_HasProto(sin) \
526 SymI_HasProto(exp) \
527 SymI_HasProto(log) \
528 SymI_HasProto(sqrt) \
529 SymI_HasProto(powf) \
530 SymI_HasProto(tanhf) \
531 SymI_HasProto(coshf) \
532 SymI_HasProto(sinhf) \
533 SymI_HasProto(atanf) \
534 SymI_HasProto(acosf) \
535 SymI_HasProto(asinf) \
536 SymI_HasProto(tanf) \
537 SymI_HasProto(cosf) \
538 SymI_HasProto(sinf) \
539 SymI_HasProto(expf) \
540 SymI_HasProto(logf) \
541 SymI_HasProto(sqrtf) \
542 SymI_HasProto(erf) \
543 SymI_HasProto(erfc) \
544 SymI_HasProto(erff) \
545 SymI_HasProto(erfcf) \
546 SymI_HasProto(memcpy) \
547 SymI_HasProto(rts_InstallConsoleEvent) \
548 SymI_HasProto(rts_ConsoleHandlerDone) \
549 SymI_NeedsProto(mktime) \
550 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___timezone)) \
551 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___tzname)) \
552 RTS_WIN32_ONLY(SymI_NeedsProto(_imp__tzname)) \
553 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___iob)) \
554 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___osver)) \
555 SymI_NeedsProto(localtime) \
556 SymI_NeedsProto(gmtime) \
557 SymI_NeedsProto(opendir) \
558 SymI_NeedsProto(readdir) \
559 SymI_NeedsProto(rewinddir) \
560 RTS_WIN32_ONLY(SymI_NeedsProto(_imp____mb_cur_max)) \
561 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___pctype)) \
562 RTS_WIN32_ONLY(SymI_NeedsProto(__chkstk)) \
563 RTS_WIN64_ONLY(SymI_NeedsProto(__imp___iob_func)) \
564 RTS_WIN64_ONLY(SymI_NeedsProto(___chkstk_ms)) \
565 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_localeconv)) \
566 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_islower)) \
567 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isspace)) \
568 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isxdigit)) \
569 RTS_WIN64_ONLY(SymI_HasProto(close)) \
570 RTS_WIN64_ONLY(SymI_HasProto(read)) \
571 RTS_WIN64_ONLY(SymI_HasProto(dup)) \
572 RTS_WIN64_ONLY(SymI_HasProto(dup2)) \
573 RTS_WIN64_ONLY(SymI_HasProto(write)) \
574 SymI_NeedsProto(getpid) \
575 RTS_WIN64_ONLY(SymI_HasProto(access)) \
576 SymI_HasProto(chmod) \
577 RTS_WIN64_ONLY(SymI_HasProto(creat)) \
578 RTS_WIN64_ONLY(SymI_HasProto(umask)) \
579 SymI_HasProto(unlink) \
580 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__errno)) \
581 RTS_WIN64_ONLY(SymI_NeedsProto(ftruncate64)) \
582 RTS_WIN64_ONLY(SymI_HasProto(setmode)) \
583 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wstat64)) \
584 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__fstat64)) \
585 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wsopen)) \
586 RTS_WIN64_ONLY(SymI_HasProto(__imp__environ)) \
587 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileAttributesA)) \
588 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileInformationByHandle)) \
589 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileType)) \
590 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetLastError)) \
591 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceFrequency)) \
592 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceCounter)) \
593 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetTickCount)) \
594 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WaitForSingleObject)) \
595 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekConsoleInputA)) \
596 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ReadConsoleInputA)) \
597 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekNamedPipe)) \
598 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__isatty)) \
599 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_select)) \
600 RTS_WIN64_ONLY(SymI_HasProto(isatty)) \
601 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__get_osfhandle)) \
602 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetConsoleMode)) \
603 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetConsoleMode)) \
604 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FlushConsoleInputBuffer)) \
605 RTS_WIN64_ONLY(SymI_HasProto(free)) \
606 RTS_WIN64_ONLY(SymI_NeedsProto(raise)) \
607 RTS_WIN64_ONLY(SymI_NeedsProto(_getpid)) \
608 RTS_WIN64_ONLY(SymI_HasProto(getc)) \
609 RTS_WIN64_ONLY(SymI_HasProto(ungetc)) \
610 RTS_WIN64_ONLY(SymI_HasProto(puts)) \
611 RTS_WIN64_ONLY(SymI_HasProto(putc)) \
612 RTS_WIN64_ONLY(SymI_HasProto(putchar)) \
613 RTS_WIN64_ONLY(SymI_HasProto(fputc)) \
614 RTS_WIN64_ONLY(SymI_HasProto(fread)) \
615 RTS_WIN64_ONLY(SymI_HasProto(fwrite)) \
616 RTS_WIN64_ONLY(SymI_HasProto(ferror)) \
617 RTS_WIN64_ONLY(SymI_HasProto(printf)) \
618 RTS_WIN64_ONLY(SymI_HasProto(fprintf)) \
619 RTS_WIN64_ONLY(SymI_HasProto(sprintf)) \
620 RTS_WIN64_ONLY(SymI_HasProto(vsprintf)) \
621 RTS_WIN64_ONLY(SymI_HasProto(sscanf)) \
622 RTS_WIN64_ONLY(SymI_HasProto(ldexp)) \
623 RTS_WIN64_ONLY(SymI_HasProto(strlen)) \
624 RTS_WIN64_ONLY(SymI_HasProto(strnlen)) \
625 RTS_WIN64_ONLY(SymI_HasProto(strchr)) \
626 RTS_WIN64_ONLY(SymI_HasProto(strtol)) \
627 RTS_WIN64_ONLY(SymI_HasProto(strerror)) \
628 RTS_WIN64_ONLY(SymI_HasProto(memchr)) \
629 RTS_WIN64_ONLY(SymI_HasProto(memcmp)) \
630 RTS_WIN64_ONLY(SymI_HasProto(wcscpy)) \
631 RTS_WIN64_ONLY(SymI_HasProto(wcslen)) \
632 RTS_WIN64_ONLY(SymI_HasProto(_lseeki64)) \
633 RTS_WIN64_ONLY(SymI_HasProto(_wchmod)) \
634 RTS_WIN64_ONLY(SymI_HasProto(closesocket)) \
635 RTS_WIN64_ONLY(SymI_HasProto(send)) \
636 RTS_WIN64_ONLY(SymI_HasProto(recv)) \
637 RTS_WIN64_ONLY(SymI_HasProto(bsearch)) \
638 RTS_WIN64_ONLY(SymI_HasProto(CommandLineToArgvW)) \
639 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmap)) \
640 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmapIndirect)) \
641 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleBitmap)) \
642 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBPatternBrushPt)) \
643 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBitmap)) \
644 RTS_WIN64_ONLY(SymI_HasProto(SetBitmapDimensionEx)) \
645 RTS_WIN64_ONLY(SymI_HasProto(GetBitmapDimensionEx)) \
646 RTS_WIN64_ONLY(SymI_HasProto(GetStockObject)) \
647 RTS_WIN64_ONLY(SymI_HasProto(GetObjectW)) \
648 RTS_WIN64_ONLY(SymI_HasProto(DeleteObject)) \
649 RTS_WIN64_ONLY(SymI_HasProto(SetDIBits)) \
650 RTS_WIN64_ONLY(SymI_HasProto(GetDIBits)) \
651 RTS_WIN64_ONLY(SymI_HasProto(CreateSolidBrush)) \
652 RTS_WIN64_ONLY(SymI_HasProto(CreateHatchBrush)) \
653 RTS_WIN64_ONLY(SymI_HasProto(CreatePatternBrush)) \
654 RTS_WIN64_ONLY(SymI_HasProto(CreateFontW)) \
655 RTS_WIN64_ONLY(SymI_HasProto(AngleArc)) \
656 RTS_WIN64_ONLY(SymI_HasProto(Arc)) \
657 RTS_WIN64_ONLY(SymI_HasProto(ArcTo)) \
658 RTS_WIN64_ONLY(SymI_HasProto(BeginPath)) \
659 RTS_WIN64_ONLY(SymI_HasProto(BitBlt)) \
660 RTS_WIN64_ONLY(SymI_HasProto(CancelDC)) \
661 RTS_WIN64_ONLY(SymI_HasProto(Chord)) \
662 RTS_WIN64_ONLY(SymI_HasProto(CloseFigure)) \
663 RTS_WIN64_ONLY(SymI_HasProto(CombineRgn)) \
664 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleDC)) \
665 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgn)) \
666 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgnIndirect)) \
667 RTS_WIN64_ONLY(SymI_HasProto(CreatePen)) \
668 RTS_WIN64_ONLY(SymI_HasProto(CreatePolygonRgn)) \
669 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgn)) \
670 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgnIndirect)) \
671 RTS_WIN64_ONLY(SymI_HasProto(CreateRoundRectRgn)) \
672 RTS_WIN64_ONLY(SymI_HasProto(DeleteDC)) \
673 RTS_WIN64_ONLY(SymI_HasProto(Ellipse)) \
674 RTS_WIN64_ONLY(SymI_HasProto(EndPath)) \
675 RTS_WIN64_ONLY(SymI_HasProto(EqualRgn)) \
676 RTS_WIN64_ONLY(SymI_HasProto(ExtSelectClipRgn)) \
677 RTS_WIN64_ONLY(SymI_HasProto(FillPath)) \
678 RTS_WIN64_ONLY(SymI_HasProto(FillRgn)) \
679 RTS_WIN64_ONLY(SymI_HasProto(FlattenPath)) \
680 RTS_WIN64_ONLY(SymI_HasProto(FrameRgn)) \
681 RTS_WIN64_ONLY(SymI_HasProto(GetArcDirection)) \
682 RTS_WIN64_ONLY(SymI_HasProto(GetBkColor)) \
683 RTS_WIN64_ONLY(SymI_HasProto(GetBkMode)) \
684 RTS_WIN64_ONLY(SymI_HasProto(GetBrushOrgEx)) \
685 RTS_WIN64_ONLY(SymI_HasProto(GetCurrentObject)) \
686 RTS_WIN64_ONLY(SymI_HasProto(GetDCOrgEx)) \
687 RTS_WIN64_ONLY(SymI_HasProto(GetGraphicsMode)) \
688 RTS_WIN64_ONLY(SymI_HasProto(GetMiterLimit)) \
689 RTS_WIN64_ONLY(SymI_HasProto(GetPolyFillMode)) \
690 RTS_WIN64_ONLY(SymI_HasProto(GetRgnBox)) \
691 RTS_WIN64_ONLY(SymI_HasProto(GetStretchBltMode)) \
692 RTS_WIN64_ONLY(SymI_HasProto(GetTextAlign)) \
693 RTS_WIN64_ONLY(SymI_HasProto(GetTextCharacterExtra)) \
694 RTS_WIN64_ONLY(SymI_HasProto(GetTextColor)) \
695 RTS_WIN64_ONLY(SymI_HasProto(GetTextExtentPoint32W)) \
696 RTS_WIN64_ONLY(SymI_HasProto(InvertRgn)) \
697 RTS_WIN64_ONLY(SymI_HasProto(LineTo)) \
698 RTS_WIN64_ONLY(SymI_HasProto(MaskBlt)) \
699 RTS_WIN64_ONLY(SymI_HasProto(MoveToEx)) \
700 RTS_WIN64_ONLY(SymI_HasProto(OffsetRgn)) \
701 RTS_WIN64_ONLY(SymI_HasProto(PaintRgn)) \
702 RTS_WIN64_ONLY(SymI_HasProto(PathToRegion)) \
703 RTS_WIN64_ONLY(SymI_HasProto(Pie)) \
704 RTS_WIN64_ONLY(SymI_HasProto(PlgBlt)) \
705 RTS_WIN64_ONLY(SymI_HasProto(PolyBezier)) \
706 RTS_WIN64_ONLY(SymI_HasProto(PolyBezierTo)) \
707 RTS_WIN64_ONLY(SymI_HasProto(Polygon)) \
708 RTS_WIN64_ONLY(SymI_HasProto(Polyline)) \
709 RTS_WIN64_ONLY(SymI_HasProto(PolylineTo)) \
710 RTS_WIN64_ONLY(SymI_HasProto(PtInRegion)) \
711 RTS_WIN64_ONLY(SymI_HasProto(Rectangle)) \
712 RTS_WIN64_ONLY(SymI_HasProto(RectInRegion)) \
713 RTS_WIN64_ONLY(SymI_HasProto(RestoreDC)) \
714 RTS_WIN64_ONLY(SymI_HasProto(RoundRect)) \
715 RTS_WIN64_ONLY(SymI_HasProto(SaveDC)) \
716 RTS_WIN64_ONLY(SymI_HasProto(SelectClipPath)) \
717 RTS_WIN64_ONLY(SymI_HasProto(SelectClipRgn)) \
718 RTS_WIN64_ONLY(SymI_HasProto(SelectObject)) \
719 RTS_WIN64_ONLY(SymI_HasProto(SelectPalette)) \
720 RTS_WIN64_ONLY(SymI_HasProto(SetArcDirection)) \
721 RTS_WIN64_ONLY(SymI_HasProto(SetBkColor)) \
722 RTS_WIN64_ONLY(SymI_HasProto(SetBkMode)) \
723 RTS_WIN64_ONLY(SymI_HasProto(SetBrushOrgEx)) \
724 RTS_WIN64_ONLY(SymI_HasProto(SetGraphicsMode)) \
725 RTS_WIN64_ONLY(SymI_HasProto(SetMiterLimit)) \
726 RTS_WIN64_ONLY(SymI_HasProto(SetPolyFillMode)) \
727 RTS_WIN64_ONLY(SymI_HasProto(SetStretchBltMode)) \
728 RTS_WIN64_ONLY(SymI_HasProto(SetTextAlign)) \
729 RTS_WIN64_ONLY(SymI_HasProto(SetTextCharacterExtra)) \
730 RTS_WIN64_ONLY(SymI_HasProto(SetTextColor)) \
731 RTS_WIN64_ONLY(SymI_HasProto(StretchBlt)) \
732 RTS_WIN64_ONLY(SymI_HasProto(StrokeAndFillPath)) \
733 RTS_WIN64_ONLY(SymI_HasProto(StrokePath)) \
734 RTS_WIN64_ONLY(SymI_HasProto(TextOutW)) \
735 RTS_WIN64_ONLY(SymI_HasProto(timeGetTime)) \
736 RTS_WIN64_ONLY(SymI_HasProto(WidenPath)) \
737 RTS_WIN64_ONLY(SymI_HasProto(GetFileSecurityW)) \
738 RTS_WIN64_ONLY(SymI_HasProto(RegCloseKey)) \
739 RTS_WIN64_ONLY(SymI_HasProto(RegConnectRegistryW)) \
740 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyExW)) \
741 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyW)) \
742 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteKeyW)) \
743 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteValueW)) \
744 RTS_WIN64_ONLY(SymI_HasProto(RegEnumKeyW)) \
745 RTS_WIN64_ONLY(SymI_HasProto(RegEnumValueW)) \
746 RTS_WIN64_ONLY(SymI_HasProto(RegFlushKey)) \
747 RTS_WIN64_ONLY(SymI_HasProto(RegLoadKeyW)) \
748 RTS_WIN64_ONLY(SymI_HasProto(RegNotifyChangeKeyValue)) \
749 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyExW)) \
750 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyW)) \
751 RTS_WIN64_ONLY(SymI_HasProto(RegQueryInfoKeyW)) \
752 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueExW)) \
753 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueW)) \
754 RTS_WIN64_ONLY(SymI_HasProto(RegReplaceKeyW)) \
755 RTS_WIN64_ONLY(SymI_HasProto(RegRestoreKeyW)) \
756 RTS_WIN64_ONLY(SymI_HasProto(RegSaveKeyW)) \
757 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueExW)) \
758 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueW)) \
759 RTS_WIN64_ONLY(SymI_HasProto(RegUnLoadKeyW)) \
760 RTS_WIN64_ONLY(SymI_NeedsProto(SHGetFolderPathW)) \
761 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetWindowLongPtrW)) \
762 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetWindowLongPtrW)) \
763 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_MenuItemFromPoint)) \
764 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPoint)) \
765 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPointEx)) \
766 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DeleteObject)) \
767 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_UnmapViewOfFile)) \
768 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CloseHandle)) \
769 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FreeLibrary)) \
770 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetMessageW)) \
771 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TranslateMessage)) \
772 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DispatchMessageW)) \
773 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DefWindowProcW)) \
774 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetDIBits)) \
775 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalAlloc)) \
776 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalFree)) \
777 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateFileW)) \
778 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WriteFile)) \
779 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateCompatibleBitmap)) \
780 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SelectObject)) \
781 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_Polygon)) \
782 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FormatMessageW)) \
783 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__localtime64)) \
784 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__tzname)) \
785 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__timezone)) \
786 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreatePipe)) \
787 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetHandleInformation)) \
788 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetStdHandle)) \
789 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetCurrentProcess)) \
790 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DuplicateHandle)) \
791 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateProcessW)) \
792 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TerminateProcess)) \
793 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__open_osfhandle)) \
794 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetExitCodeProcess)) \
795 RTS_MINGW_GETTIMEOFDAY_SYM \
796 SymI_NeedsProto(closedir)
797
798 #else
799 #define RTS_MINGW_ONLY_SYMBOLS /**/
800 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
801 #endif
802
803
804 #if defined(darwin_HOST_OS) && HAVE_PRINTF_LDBLSTUB
805 #define RTS_DARWIN_ONLY_SYMBOLS \
806 SymI_NeedsProto(asprintf$LDBLStub) \
807 SymI_NeedsProto(err$LDBLStub) \
808 SymI_NeedsProto(errc$LDBLStub) \
809 SymI_NeedsProto(errx$LDBLStub) \
810 SymI_NeedsProto(fprintf$LDBLStub) \
811 SymI_NeedsProto(fscanf$LDBLStub) \
812 SymI_NeedsProto(fwprintf$LDBLStub) \
813 SymI_NeedsProto(fwscanf$LDBLStub) \
814 SymI_NeedsProto(printf$LDBLStub) \
815 SymI_NeedsProto(scanf$LDBLStub) \
816 SymI_NeedsProto(snprintf$LDBLStub) \
817 SymI_NeedsProto(sprintf$LDBLStub) \
818 SymI_NeedsProto(sscanf$LDBLStub) \
819 SymI_NeedsProto(strtold$LDBLStub) \
820 SymI_NeedsProto(swprintf$LDBLStub) \
821 SymI_NeedsProto(swscanf$LDBLStub) \
822 SymI_NeedsProto(syslog$LDBLStub) \
823 SymI_NeedsProto(vasprintf$LDBLStub) \
824 SymI_NeedsProto(verr$LDBLStub) \
825 SymI_NeedsProto(verrc$LDBLStub) \
826 SymI_NeedsProto(verrx$LDBLStub) \
827 SymI_NeedsProto(vfprintf$LDBLStub) \
828 SymI_NeedsProto(vfscanf$LDBLStub) \
829 SymI_NeedsProto(vfwprintf$LDBLStub) \
830 SymI_NeedsProto(vfwscanf$LDBLStub) \
831 SymI_NeedsProto(vprintf$LDBLStub) \
832 SymI_NeedsProto(vscanf$LDBLStub) \
833 SymI_NeedsProto(vsnprintf$LDBLStub) \
834 SymI_NeedsProto(vsprintf$LDBLStub) \
835 SymI_NeedsProto(vsscanf$LDBLStub) \
836 SymI_NeedsProto(vswprintf$LDBLStub) \
837 SymI_NeedsProto(vswscanf$LDBLStub) \
838 SymI_NeedsProto(vsyslog$LDBLStub) \
839 SymI_NeedsProto(vwarn$LDBLStub) \
840 SymI_NeedsProto(vwarnc$LDBLStub) \
841 SymI_NeedsProto(vwarnx$LDBLStub) \
842 SymI_NeedsProto(vwprintf$LDBLStub) \
843 SymI_NeedsProto(vwscanf$LDBLStub) \
844 SymI_NeedsProto(warn$LDBLStub) \
845 SymI_NeedsProto(warnc$LDBLStub) \
846 SymI_NeedsProto(warnx$LDBLStub) \
847 SymI_NeedsProto(wcstold$LDBLStub) \
848 SymI_NeedsProto(wprintf$LDBLStub) \
849 SymI_NeedsProto(wscanf$LDBLStub)
850 #else
851 #define RTS_DARWIN_ONLY_SYMBOLS
852 #endif
853
854 #ifndef SMP
855 # define MAIN_CAP_SYM SymI_HasProto(MainCapability)
856 #else
857 # define MAIN_CAP_SYM
858 #endif
859
860 #if !defined(mingw32_HOST_OS)
861 #define RTS_USER_SIGNALS_SYMBOLS \
862 SymI_HasProto(setIOManagerControlFd) \
863 SymI_HasProto(setTimerManagerControlFd) \
864 SymI_HasProto(setIOManagerWakeupFd) \
865 SymI_HasProto(ioManagerWakeup) \
866 SymI_HasProto(blockUserSignals) \
867 SymI_HasProto(unblockUserSignals)
868 #else
869 #define RTS_USER_SIGNALS_SYMBOLS \
870 SymI_HasProto(ioManagerWakeup) \
871 SymI_HasProto(sendIOManagerEvent) \
872 SymI_HasProto(readIOManagerEvent) \
873 SymI_HasProto(getIOManagerEvent) \
874 SymI_HasProto(console_handler)
875 #endif
876
877 #define RTS_LIBFFI_SYMBOLS \
878 SymE_NeedsProto(ffi_prep_cif) \
879 SymE_NeedsProto(ffi_call) \
880 SymE_NeedsProto(ffi_type_void) \
881 SymE_NeedsProto(ffi_type_float) \
882 SymE_NeedsProto(ffi_type_double) \
883 SymE_NeedsProto(ffi_type_sint64) \
884 SymE_NeedsProto(ffi_type_uint64) \
885 SymE_NeedsProto(ffi_type_sint32) \
886 SymE_NeedsProto(ffi_type_uint32) \
887 SymE_NeedsProto(ffi_type_sint16) \
888 SymE_NeedsProto(ffi_type_uint16) \
889 SymE_NeedsProto(ffi_type_sint8) \
890 SymE_NeedsProto(ffi_type_uint8) \
891 SymE_NeedsProto(ffi_type_pointer)
892
893 #ifdef TABLES_NEXT_TO_CODE
894 #define RTS_RET_SYMBOLS /* nothing */
895 #else
896 #define RTS_RET_SYMBOLS \
897 SymI_HasProto(stg_enter_ret) \
898 SymI_HasProto(stg_gc_fun_ret) \
899 SymI_HasProto(stg_ap_v_ret) \
900 SymI_HasProto(stg_ap_f_ret) \
901 SymI_HasProto(stg_ap_d_ret) \
902 SymI_HasProto(stg_ap_l_ret) \
903 SymI_HasProto(stg_ap_v16_ret) \
904 SymI_HasProto(stg_ap_v32_ret) \
905 SymI_HasProto(stg_ap_v64_ret) \
906 SymI_HasProto(stg_ap_n_ret) \
907 SymI_HasProto(stg_ap_p_ret) \
908 SymI_HasProto(stg_ap_pv_ret) \
909 SymI_HasProto(stg_ap_pp_ret) \
910 SymI_HasProto(stg_ap_ppv_ret) \
911 SymI_HasProto(stg_ap_ppp_ret) \
912 SymI_HasProto(stg_ap_pppv_ret) \
913 SymI_HasProto(stg_ap_pppp_ret) \
914 SymI_HasProto(stg_ap_ppppp_ret) \
915 SymI_HasProto(stg_ap_pppppp_ret)
916 #endif
917
918 /* Modules compiled with -ticky may mention ticky counters */
919 /* This list should marry up with the one in $(TOP)/includes/stg/Ticky.h */
920 #define RTS_TICKY_SYMBOLS \
921 SymI_NeedsProto(ticky_entry_ctrs) \
922 SymI_NeedsProto(top_ct) \
923 \
924 SymI_HasProto(ENT_VIA_NODE_ctr) \
925 SymI_HasProto(ENT_STATIC_THK_SINGLE_ctr) \
926 SymI_HasProto(ENT_STATIC_THK_MANY_ctr) \
927 SymI_HasProto(ENT_DYN_THK_SINGLE_ctr) \
928 SymI_HasProto(ENT_DYN_THK_MANY_ctr) \
929 SymI_HasProto(ENT_STATIC_FUN_DIRECT_ctr) \
930 SymI_HasProto(ENT_DYN_FUN_DIRECT_ctr) \
931 SymI_HasProto(ENT_STATIC_CON_ctr) \
932 SymI_HasProto(ENT_DYN_CON_ctr) \
933 SymI_HasProto(ENT_STATIC_IND_ctr) \
934 SymI_HasProto(ENT_DYN_IND_ctr) \
935 SymI_HasProto(ENT_PERM_IND_ctr) \
936 SymI_HasProto(ENT_PAP_ctr) \
937 SymI_HasProto(ENT_AP_ctr) \
938 SymI_HasProto(ENT_AP_STACK_ctr) \
939 SymI_HasProto(ENT_BH_ctr) \
940 SymI_HasProto(ENT_LNE_ctr) \
941 SymI_HasProto(UNKNOWN_CALL_ctr) \
942 SymI_HasProto(SLOW_CALL_fast_v16_ctr) \
943 SymI_HasProto(SLOW_CALL_fast_v_ctr) \
944 SymI_HasProto(SLOW_CALL_fast_f_ctr) \
945 SymI_HasProto(SLOW_CALL_fast_d_ctr) \
946 SymI_HasProto(SLOW_CALL_fast_l_ctr) \
947 SymI_HasProto(SLOW_CALL_fast_n_ctr) \
948 SymI_HasProto(SLOW_CALL_fast_p_ctr) \
949 SymI_HasProto(SLOW_CALL_fast_pv_ctr) \
950 SymI_HasProto(SLOW_CALL_fast_pp_ctr) \
951 SymI_HasProto(SLOW_CALL_fast_ppv_ctr) \
952 SymI_HasProto(SLOW_CALL_fast_ppp_ctr) \
953 SymI_HasProto(SLOW_CALL_fast_pppv_ctr) \
954 SymI_HasProto(SLOW_CALL_fast_pppp_ctr) \
955 SymI_HasProto(SLOW_CALL_fast_ppppp_ctr) \
956 SymI_HasProto(SLOW_CALL_fast_pppppp_ctr) \
957 SymI_HasProto(VERY_SLOW_CALL_ctr) \
958 SymI_HasProto(ticky_slow_call_unevald) \
959 SymI_HasProto(SLOW_CALL_ctr) \
960 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_ctr) \
961 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_CHUNKS_ctr) \
962 SymI_HasProto(KNOWN_CALL_ctr) \
963 SymI_HasProto(KNOWN_CALL_TOO_FEW_ARGS_ctr) \
964 SymI_HasProto(KNOWN_CALL_EXTRA_ARGS_ctr) \
965 SymI_HasProto(SLOW_CALL_FUN_TOO_FEW_ctr) \
966 SymI_HasProto(SLOW_CALL_FUN_CORRECT_ctr) \
967 SymI_HasProto(SLOW_CALL_FUN_TOO_MANY_ctr) \
968 SymI_HasProto(SLOW_CALL_PAP_TOO_FEW_ctr) \
969 SymI_HasProto(SLOW_CALL_PAP_CORRECT_ctr) \
970 SymI_HasProto(SLOW_CALL_PAP_TOO_MANY_ctr) \
971 SymI_HasProto(SLOW_CALL_UNEVALD_ctr) \
972 SymI_HasProto(UPDF_OMITTED_ctr) \
973 SymI_HasProto(UPDF_PUSHED_ctr) \
974 SymI_HasProto(CATCHF_PUSHED_ctr) \
975 SymI_HasProto(UPDF_RCC_PUSHED_ctr) \
976 SymI_HasProto(UPDF_RCC_OMITTED_ctr) \
977 SymI_HasProto(UPD_SQUEEZED_ctr) \
978 SymI_HasProto(UPD_CON_IN_NEW_ctr) \
979 SymI_HasProto(UPD_CON_IN_PLACE_ctr) \
980 SymI_HasProto(UPD_PAP_IN_NEW_ctr) \
981 SymI_HasProto(UPD_PAP_IN_PLACE_ctr) \
982 SymI_HasProto(ALLOC_HEAP_ctr) \
983 SymI_HasProto(ALLOC_HEAP_tot) \
984 SymI_HasProto(HEAP_CHK_ctr) \
985 SymI_HasProto(STK_CHK_ctr) \
986 SymI_HasProto(ALLOC_RTS_ctr) \
987 SymI_HasProto(ALLOC_RTS_tot) \
988 SymI_HasProto(ALLOC_FUN_ctr) \
989 SymI_HasProto(ALLOC_FUN_adm) \
990 SymI_HasProto(ALLOC_FUN_gds) \
991 SymI_HasProto(ALLOC_FUN_slp) \
992 SymI_HasProto(UPD_NEW_IND_ctr) \
993 SymI_HasProto(UPD_NEW_PERM_IND_ctr) \
994 SymI_HasProto(UPD_OLD_IND_ctr) \
995 SymI_HasProto(UPD_OLD_PERM_IND_ctr) \
996 SymI_HasProto(UPD_CAF_BH_UPDATABLE_ctr) \
997 SymI_HasProto(UPD_CAF_BH_SINGLE_ENTRY_ctr) \
998 SymI_HasProto(GC_SEL_ABANDONED_ctr) \
999 SymI_HasProto(GC_SEL_MINOR_ctr) \
1000 SymI_HasProto(GC_SEL_MAJOR_ctr) \
1001 SymI_HasProto(GC_FAILED_PROMOTION_ctr) \
1002 SymI_HasProto(ALLOC_UP_THK_ctr) \
1003 SymI_HasProto(ALLOC_SE_THK_ctr) \
1004 SymI_HasProto(ALLOC_THK_adm) \
1005 SymI_HasProto(ALLOC_THK_gds) \
1006 SymI_HasProto(ALLOC_THK_slp) \
1007 SymI_HasProto(ALLOC_CON_ctr) \
1008 SymI_HasProto(ALLOC_CON_adm) \
1009 SymI_HasProto(ALLOC_CON_gds) \
1010 SymI_HasProto(ALLOC_CON_slp) \
1011 SymI_HasProto(ALLOC_TUP_ctr) \
1012 SymI_HasProto(ALLOC_TUP_adm) \
1013 SymI_HasProto(ALLOC_TUP_gds) \
1014 SymI_HasProto(ALLOC_TUP_slp) \
1015 SymI_HasProto(ALLOC_BH_ctr) \
1016 SymI_HasProto(ALLOC_BH_adm) \
1017 SymI_HasProto(ALLOC_BH_gds) \
1018 SymI_HasProto(ALLOC_BH_slp) \
1019 SymI_HasProto(ALLOC_PRIM_ctr) \
1020 SymI_HasProto(ALLOC_PRIM_adm) \
1021 SymI_HasProto(ALLOC_PRIM_gds) \
1022 SymI_HasProto(ALLOC_PRIM_slp) \
1023 SymI_HasProto(ALLOC_PAP_ctr) \
1024 SymI_HasProto(ALLOC_PAP_adm) \
1025 SymI_HasProto(ALLOC_PAP_gds) \
1026 SymI_HasProto(ALLOC_PAP_slp) \
1027 SymI_HasProto(ALLOC_TSO_ctr) \
1028 SymI_HasProto(ALLOC_TSO_adm) \
1029 SymI_HasProto(ALLOC_TSO_gds) \
1030 SymI_HasProto(ALLOC_TSO_slp) \
1031 SymI_HasProto(RET_NEW_ctr) \
1032 SymI_HasProto(RET_OLD_ctr) \
1033 SymI_HasProto(RET_UNBOXED_TUP_ctr) \
1034 SymI_HasProto(RET_SEMI_loads_avoided)
1035
1036
1037 // On most platforms, the garbage collector rewrites references
1038 // to small integer and char objects to a set of common, shared ones.
1039 //
1040 // We don't do this when compiling to Windows DLLs at the moment because
1041 // it doesn't support cross package data references well.
1042 //
1043 #if defined(COMPILING_WINDOWS_DLL)
1044 #define RTS_INTCHAR_SYMBOLS
1045 #else
1046 #define RTS_INTCHAR_SYMBOLS \
1047 SymI_HasProto(stg_CHARLIKE_static_closure) \
1048 SymI_HasProto(stg_INTLIKE_static_closure)
1049 #endif
1050
1051
1052 #define RTS_SYMBOLS \
1053 Maybe_Stable_Names \
1054 RTS_TICKY_SYMBOLS \
1055 SymI_HasProto(StgReturn) \
1056 SymI_HasProto(stg_gc_noregs) \
1057 SymI_HasProto(stg_ret_v_info) \
1058 SymI_HasProto(stg_ret_p_info) \
1059 SymI_HasProto(stg_ret_n_info) \
1060 SymI_HasProto(stg_ret_f_info) \
1061 SymI_HasProto(stg_ret_d_info) \
1062 SymI_HasProto(stg_ret_l_info) \
1063 SymI_HasProto(stg_gc_prim_p) \
1064 SymI_HasProto(stg_gc_prim_pp) \
1065 SymI_HasProto(stg_gc_prim_n) \
1066 SymI_HasProto(stg_enter_info) \
1067 SymI_HasProto(__stg_gc_enter_1) \
1068 SymI_HasProto(stg_gc_unpt_r1) \
1069 SymI_HasProto(stg_gc_unbx_r1) \
1070 SymI_HasProto(stg_gc_f1) \
1071 SymI_HasProto(stg_gc_d1) \
1072 SymI_HasProto(stg_gc_l1) \
1073 SymI_HasProto(stg_gc_pp) \
1074 SymI_HasProto(stg_gc_ppp) \
1075 SymI_HasProto(stg_gc_pppp) \
1076 SymI_HasProto(__stg_gc_fun) \
1077 SymI_HasProto(stg_gc_fun_info) \
1078 SymI_HasProto(stg_yield_noregs) \
1079 SymI_HasProto(stg_yield_to_interpreter) \
1080 SymI_HasProto(stg_block_noregs) \
1081 SymI_HasProto(stg_block_takemvar) \
1082 SymI_HasProto(stg_block_readmvar) \
1083 SymI_HasProto(stg_block_putmvar) \
1084 MAIN_CAP_SYM \
1085 SymI_HasProto(MallocFailHook) \
1086 SymI_HasProto(OnExitHook) \
1087 SymI_HasProto(OutOfHeapHook) \
1088 SymI_HasProto(StackOverflowHook) \
1089 SymI_HasProto(addDLL) \
1090 SymI_HasProto(__int_encodeDouble) \
1091 SymI_HasProto(__word_encodeDouble) \
1092 SymI_HasProto(__int_encodeFloat) \
1093 SymI_HasProto(__word_encodeFloat) \
1094 SymI_HasProto(stg_atomicallyzh) \
1095 SymI_HasProto(barf) \
1096 SymI_HasProto(deRefStablePtr) \
1097 SymI_HasProto(debugBelch) \
1098 SymI_HasProto(errorBelch) \
1099 SymI_HasProto(sysErrorBelch) \
1100 SymI_HasProto(stg_getMaskingStatezh) \
1101 SymI_HasProto(stg_maskAsyncExceptionszh) \
1102 SymI_HasProto(stg_maskUninterruptiblezh) \
1103 SymI_HasProto(stg_catchzh) \
1104 SymI_HasProto(stg_catchRetryzh) \
1105 SymI_HasProto(stg_catchSTMzh) \
1106 SymI_HasProto(stg_checkzh) \
1107 SymI_HasProto(closure_flags) \
1108 SymI_HasProto(cmp_thread) \
1109 SymI_HasProto(createAdjustor) \
1110 SymI_HasProto(stg_decodeDoublezu2Intzh) \
1111 SymI_HasProto(stg_decodeDoublezuInt64zh) \
1112 SymI_HasProto(stg_decodeFloatzuIntzh) \
1113 SymI_HasProto(defaultsHook) \
1114 SymI_HasProto(stg_delayzh) \
1115 SymI_HasProto(stg_deRefWeakzh) \
1116 SymI_HasProto(stg_deRefStablePtrzh) \
1117 SymI_HasProto(dirty_MUT_VAR) \
1118 SymI_HasProto(dirty_TVAR) \
1119 SymI_HasProto(stg_forkzh) \
1120 SymI_HasProto(stg_forkOnzh) \
1121 SymI_HasProto(forkProcess) \
1122 SymI_HasProto(forkOS_createThread) \
1123 SymI_HasProto(freeHaskellFunctionPtr) \
1124 SymI_HasProto(getOrSetGHCConcSignalSignalHandlerStore) \
1125 SymI_HasProto(getOrSetGHCConcWindowsPendingDelaysStore) \
1126 SymI_HasProto(getOrSetGHCConcWindowsIOManagerThreadStore) \
1127 SymI_HasProto(getOrSetGHCConcWindowsProddingStore) \
1128 SymI_HasProto(getOrSetSystemEventThreadEventManagerStore) \
1129 SymI_HasProto(getOrSetSystemEventThreadIOManagerThreadStore) \
1130 SymI_HasProto(getOrSetSystemTimerThreadEventManagerStore) \
1131 SymI_HasProto(getOrSetSystemTimerThreadIOManagerThreadStore) \
1132 SymI_HasProto(getOrSetLibHSghcFastStringTable) \
1133 SymI_HasProto(getGCStats) \
1134 SymI_HasProto(getGCStatsEnabled) \
1135 SymI_HasProto(genericRaise) \
1136 SymI_HasProto(getProgArgv) \
1137 SymI_HasProto(getFullProgArgv) \
1138 SymI_HasProto(getStablePtr) \
1139 SymI_HasProto(foreignExportStablePtr) \
1140 SymI_HasProto(hs_init) \
1141 SymI_HasProto(hs_exit) \
1142 SymI_HasProto(hs_set_argv) \
1143 SymI_HasProto(hs_add_root) \
1144 SymI_HasProto(hs_perform_gc) \
1145 SymI_HasProto(hs_lock_stable_tables) \
1146 SymI_HasProto(hs_unlock_stable_tables) \
1147 SymI_HasProto(hs_free_stable_ptr) \
1148 SymI_HasProto(hs_free_stable_ptr_unsafe) \
1149 SymI_HasProto(hs_free_fun_ptr) \
1150 SymI_HasProto(hs_hpc_rootModule) \
1151 SymI_HasProto(hs_hpc_module) \
1152 SymI_HasProto(initLinker) \
1153 SymI_HasProto(initLinker_) \
1154 SymI_HasProto(stg_unpackClosurezh) \
1155 SymI_HasProto(stg_getApStackValzh) \
1156 SymI_HasProto(stg_getSparkzh) \
1157 SymI_HasProto(stg_numSparkszh) \
1158 SymI_HasProto(stg_isCurrentThreadBoundzh) \
1159 SymI_HasProto(stg_isEmptyMVarzh) \
1160 SymI_HasProto(stg_killThreadzh) \
1161 SymI_HasProto(loadArchive) \
1162 SymI_HasProto(loadObj) \
1163 SymI_HasProto(insertSymbol) \
1164 SymI_HasProto(lookupSymbol) \
1165 SymI_HasProto(stg_makeStablePtrzh) \
1166 SymI_HasProto(stg_mkApUpd0zh) \
1167 SymI_HasProto(stg_myThreadIdzh) \
1168 SymI_HasProto(stg_labelThreadzh) \
1169 SymI_HasProto(stg_newArrayzh) \
1170 SymI_HasProto(stg_copyArrayzh) \
1171 SymI_HasProto(stg_copyMutableArrayzh) \
1172 SymI_HasProto(stg_copyArrayArrayzh) \
1173 SymI_HasProto(stg_copyMutableArrayArrayzh) \
1174 SymI_HasProto(stg_cloneArrayzh) \
1175 SymI_HasProto(stg_cloneMutableArrayzh) \
1176 SymI_HasProto(stg_freezzeArrayzh) \
1177 SymI_HasProto(stg_thawArrayzh) \
1178 SymI_HasProto(stg_newArrayArrayzh) \
1179 SymI_HasProto(stg_casArrayzh) \
1180 SymI_HasProto(stg_newSmallArrayzh) \
1181 SymI_HasProto(stg_unsafeThawSmallArrayzh) \
1182 SymI_HasProto(stg_cloneSmallArrayzh) \
1183 SymI_HasProto(stg_cloneSmallMutableArrayzh) \
1184 SymI_HasProto(stg_freezzeSmallArrayzh) \
1185 SymI_HasProto(stg_thawSmallArrayzh) \
1186 SymI_HasProto(stg_copySmallArrayzh) \
1187 SymI_HasProto(stg_copySmallMutableArrayzh) \
1188 SymI_HasProto(stg_casSmallArrayzh) \
1189 SymI_HasProto(stg_newBCOzh) \
1190 SymI_HasProto(stg_newByteArrayzh) \
1191 SymI_HasProto(stg_casIntArrayzh) \
1192 SymI_HasProto(stg_newMVarzh) \
1193 SymI_HasProto(stg_newMutVarzh) \
1194 SymI_HasProto(stg_newTVarzh) \
1195 SymI_HasProto(stg_noDuplicatezh) \
1196 SymI_HasProto(stg_atomicModifyMutVarzh) \
1197 SymI_HasProto(stg_casMutVarzh) \
1198 SymI_HasProto(stg_newPinnedByteArrayzh) \
1199 SymI_HasProto(stg_newAlignedPinnedByteArrayzh) \
1200 SymI_HasProto(stg_shrinkMutableByteArrayzh) \
1201 SymI_HasProto(stg_resizzeMutableByteArrayzh) \
1202 SymI_HasProto(newSpark) \
1203 SymI_HasProto(performGC) \
1204 SymI_HasProto(performMajorGC) \
1205 SymI_HasProto(prog_argc) \
1206 SymI_HasProto(prog_argv) \
1207 SymI_HasProto(stg_putMVarzh) \
1208 SymI_HasProto(stg_raisezh) \
1209 SymI_HasProto(stg_raiseIOzh) \
1210 SymI_HasProto(stg_readTVarzh) \
1211 SymI_HasProto(stg_readTVarIOzh) \
1212 SymI_HasProto(resumeThread) \
1213 SymI_HasProto(setNumCapabilities) \
1214 SymI_HasProto(getNumberOfProcessors) \
1215 SymI_HasProto(resolveObjs) \
1216 SymI_HasProto(stg_retryzh) \
1217 SymI_HasProto(rts_apply) \
1218 SymI_HasProto(rts_checkSchedStatus) \
1219 SymI_HasProto(rts_eval) \
1220 SymI_HasProto(rts_evalIO) \
1221 SymI_HasProto(rts_evalLazyIO) \
1222 SymI_HasProto(rts_evalStableIO) \
1223 SymI_HasProto(rts_eval_) \
1224 SymI_HasProto(rts_getBool) \
1225 SymI_HasProto(rts_getChar) \
1226 SymI_HasProto(rts_getDouble) \
1227 SymI_HasProto(rts_getFloat) \
1228 SymI_HasProto(rts_getInt) \
1229 SymI_HasProto(rts_getInt8) \
1230 SymI_HasProto(rts_getInt16) \
1231 SymI_HasProto(rts_getInt32) \
1232 SymI_HasProto(rts_getInt64) \
1233 SymI_HasProto(rts_getPtr) \
1234 SymI_HasProto(rts_getFunPtr) \
1235 SymI_HasProto(rts_getStablePtr) \
1236 SymI_HasProto(rts_getThreadId) \
1237 SymI_HasProto(rts_getWord) \
1238 SymI_HasProto(rts_getWord8) \
1239 SymI_HasProto(rts_getWord16) \
1240 SymI_HasProto(rts_getWord32) \
1241 SymI_HasProto(rts_getWord64) \
1242 SymI_HasProto(rts_lock) \
1243 SymI_HasProto(rts_mkBool) \
1244 SymI_HasProto(rts_mkChar) \
1245 SymI_HasProto(rts_mkDouble) \
1246 SymI_HasProto(rts_mkFloat) \
1247 SymI_HasProto(rts_mkInt) \
1248 SymI_HasProto(rts_mkInt8) \
1249 SymI_HasProto(rts_mkInt16) \
1250 SymI_HasProto(rts_mkInt32) \
1251 SymI_HasProto(rts_mkInt64) \
1252 SymI_HasProto(rts_mkPtr) \
1253 SymI_HasProto(rts_mkFunPtr) \
1254 SymI_HasProto(rts_mkStablePtr) \
1255 SymI_HasProto(rts_mkString) \
1256 SymI_HasProto(rts_mkWord) \
1257 SymI_HasProto(rts_mkWord8) \
1258 SymI_HasProto(rts_mkWord16) \
1259 SymI_HasProto(rts_mkWord32) \
1260 SymI_HasProto(rts_mkWord64) \
1261 SymI_HasProto(rts_unlock) \
1262 SymI_HasProto(rts_unsafeGetMyCapability) \
1263 SymI_HasProto(rtsSupportsBoundThreads) \
1264 SymI_HasProto(rts_isProfiled) \
1265 SymI_HasProto(rts_isDynamic) \
1266 SymI_HasProto(setProgArgv) \
1267 SymI_HasProto(startupHaskell) \
1268 SymI_HasProto(shutdownHaskell) \
1269 SymI_HasProto(shutdownHaskellAndExit) \
1270 SymI_HasProto(stable_name_table) \
1271 SymI_HasProto(stable_ptr_table) \
1272 SymI_HasProto(stackOverflow) \
1273 SymI_HasProto(stg_CAF_BLACKHOLE_info) \
1274 SymI_HasProto(stg_BLACKHOLE_info) \
1275 SymI_HasProto(__stg_EAGER_BLACKHOLE_info) \
1276 SymI_HasProto(stg_BLOCKING_QUEUE_CLEAN_info) \
1277 SymI_HasProto(stg_BLOCKING_QUEUE_DIRTY_info) \
1278 SymI_HasProto(startTimer) \
1279 SymI_HasProto(stg_MVAR_CLEAN_info) \
1280 SymI_HasProto(stg_MVAR_DIRTY_info) \
1281 SymI_HasProto(stg_TVAR_CLEAN_info) \
1282 SymI_HasProto(stg_TVAR_DIRTY_info) \
1283 SymI_HasProto(stg_IND_STATIC_info) \
1284 SymI_HasProto(stg_ARR_WORDS_info) \
1285 SymI_HasProto(stg_MUT_ARR_PTRS_DIRTY_info) \
1286 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN_info) \
1287 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN0_info) \
1288 SymI_HasProto(stg_SMALL_MUT_ARR_PTRS_DIRTY_info) \
1289 SymI_HasProto(stg_SMALL_MUT_ARR_PTRS_FROZEN_info) \
1290 SymI_HasProto(stg_SMALL_MUT_ARR_PTRS_FROZEN0_info) \
1291 SymI_HasProto(stg_MUT_VAR_CLEAN_info) \
1292 SymI_HasProto(stg_MUT_VAR_DIRTY_info) \
1293 SymI_HasProto(stg_WEAK_info) \
1294 SymI_HasProto(stg_ap_v_info) \
1295 SymI_HasProto(stg_ap_f_info) \
1296 SymI_HasProto(stg_ap_d_info) \
1297 SymI_HasProto(stg_ap_l_info) \
1298 SymI_HasProto(stg_ap_v16_info) \
1299 SymI_HasProto(stg_ap_v32_info) \
1300 SymI_HasProto(stg_ap_v64_info) \
1301 SymI_HasProto(stg_ap_n_info) \
1302 SymI_HasProto(stg_ap_p_info) \
1303 SymI_HasProto(stg_ap_pv_info) \
1304 SymI_HasProto(stg_ap_pp_info) \
1305 SymI_HasProto(stg_ap_ppv_info) \
1306 SymI_HasProto(stg_ap_ppp_info) \
1307 SymI_HasProto(stg_ap_pppv_info) \
1308 SymI_HasProto(stg_ap_pppp_info) \
1309 SymI_HasProto(stg_ap_ppppp_info) \
1310 SymI_HasProto(stg_ap_pppppp_info) \
1311 SymI_HasProto(stg_ap_0_fast) \
1312 SymI_HasProto(stg_ap_v_fast) \
1313 SymI_HasProto(stg_ap_f_fast) \
1314 SymI_HasProto(stg_ap_d_fast) \
1315 SymI_HasProto(stg_ap_l_fast) \
1316 SymI_HasProto(stg_ap_v16_fast) \
1317 SymI_HasProto(stg_ap_v32_fast) \
1318 SymI_HasProto(stg_ap_v64_fast) \
1319 SymI_HasProto(stg_ap_n_fast) \
1320 SymI_HasProto(stg_ap_p_fast) \
1321 SymI_HasProto(stg_ap_pv_fast) \
1322 SymI_HasProto(stg_ap_pp_fast) \
1323 SymI_HasProto(stg_ap_ppv_fast) \
1324 SymI_HasProto(stg_ap_ppp_fast) \
1325 SymI_HasProto(stg_ap_pppv_fast) \
1326 SymI_HasProto(stg_ap_pppp_fast) \
1327 SymI_HasProto(stg_ap_ppppp_fast) \
1328 SymI_HasProto(stg_ap_pppppp_fast) \
1329 SymI_HasProto(stg_ap_1_upd_info) \
1330 SymI_HasProto(stg_ap_2_upd_info) \
1331 SymI_HasProto(stg_ap_3_upd_info) \
1332 SymI_HasProto(stg_ap_4_upd_info) \
1333 SymI_HasProto(stg_ap_5_upd_info) \
1334 SymI_HasProto(stg_ap_6_upd_info) \
1335 SymI_HasProto(stg_ap_7_upd_info) \
1336 SymI_HasProto(stg_exit) \
1337 SymI_HasProto(stg_sel_0_upd_info) \
1338 SymI_HasProto(stg_sel_1_upd_info) \
1339 SymI_HasProto(stg_sel_2_upd_info) \
1340 SymI_HasProto(stg_sel_3_upd_info) \
1341 SymI_HasProto(stg_sel_4_upd_info) \
1342 SymI_HasProto(stg_sel_5_upd_info) \
1343 SymI_HasProto(stg_sel_6_upd_info) \
1344 SymI_HasProto(stg_sel_7_upd_info) \
1345 SymI_HasProto(stg_sel_8_upd_info) \
1346 SymI_HasProto(stg_sel_9_upd_info) \
1347 SymI_HasProto(stg_sel_10_upd_info) \
1348 SymI_HasProto(stg_sel_11_upd_info) \
1349 SymI_HasProto(stg_sel_12_upd_info) \
1350 SymI_HasProto(stg_sel_13_upd_info) \
1351 SymI_HasProto(stg_sel_14_upd_info) \
1352 SymI_HasProto(stg_sel_15_upd_info) \
1353 SymI_HasProto(stg_sel_0_noupd_info) \
1354 SymI_HasProto(stg_sel_1_noupd_info) \
1355 SymI_HasProto(stg_sel_2_noupd_info) \
1356 SymI_HasProto(stg_sel_3_noupd_info) \
1357 SymI_HasProto(stg_sel_4_noupd_info) \
1358 SymI_HasProto(stg_sel_5_noupd_info) \
1359 SymI_HasProto(stg_sel_6_noupd_info) \
1360 SymI_HasProto(stg_sel_7_noupd_info) \
1361 SymI_HasProto(stg_sel_8_noupd_info) \
1362 SymI_HasProto(stg_sel_9_noupd_info) \
1363 SymI_HasProto(stg_sel_10_noupd_info) \
1364 SymI_HasProto(stg_sel_11_noupd_info) \
1365 SymI_HasProto(stg_sel_12_noupd_info) \
1366 SymI_HasProto(stg_sel_13_noupd_info) \
1367 SymI_HasProto(stg_sel_14_noupd_info) \
1368 SymI_HasProto(stg_sel_15_noupd_info) \
1369 SymI_HasProto(stg_upd_frame_info) \
1370 SymI_HasProto(stg_bh_upd_frame_info) \
1371 SymI_HasProto(suspendThread) \
1372 SymI_HasProto(stg_takeMVarzh) \
1373 SymI_HasProto(stg_readMVarzh) \
1374 SymI_HasProto(stg_threadStatuszh) \
1375 SymI_HasProto(stg_tryPutMVarzh) \
1376 SymI_HasProto(stg_tryTakeMVarzh) \
1377 SymI_HasProto(stg_tryReadMVarzh) \
1378 SymI_HasProto(stg_unmaskAsyncExceptionszh) \
1379 SymI_HasProto(unloadObj) \
1380 SymI_HasProto(stg_unsafeThawArrayzh) \
1381 SymI_HasProto(stg_waitReadzh) \
1382 SymI_HasProto(stg_waitWritezh) \
1383 SymI_HasProto(stg_writeTVarzh) \
1384 SymI_HasProto(stg_yieldzh) \
1385 SymI_NeedsProto(stg_interp_constr_entry) \
1386 SymI_HasProto(stg_arg_bitmaps) \
1387 SymI_HasProto(large_alloc_lim) \
1388 SymI_HasProto(g0) \
1389 SymI_HasProto(allocate) \
1390 SymI_HasProto(allocateExec) \
1391 SymI_HasProto(flushExec) \
1392 SymI_HasProto(freeExec) \
1393 SymI_HasProto(getAllocations) \
1394 SymI_HasProto(revertCAFs) \
1395 SymI_HasProto(RtsFlags) \
1396 SymI_NeedsProto(rts_breakpoint_io_action) \
1397 SymI_NeedsProto(rts_stop_next_breakpoint) \
1398 SymI_NeedsProto(rts_stop_on_exception) \
1399 SymI_HasProto(stopTimer) \
1400 SymI_HasProto(n_capabilities) \
1401 SymI_HasProto(enabled_capabilities) \
1402 SymI_HasProto(stg_traceCcszh) \
1403 SymI_HasProto(stg_traceEventzh) \
1404 SymI_HasProto(stg_traceMarkerzh) \
1405 SymI_HasProto(getMonotonicNSec) \
1406 SymI_HasProto(lockFile) \
1407 SymI_HasProto(unlockFile) \
1408 SymI_HasProto(startProfTimer) \
1409 SymI_HasProto(stopProfTimer) \
1410 SymI_HasProto(atomic_inc) \
1411 SymI_HasProto(atomic_dec) \
1412 RTS_USER_SIGNALS_SYMBOLS \
1413 RTS_INTCHAR_SYMBOLS
1414
1415
1416 // 64-bit support functions in libgcc.a
1417 #if defined(__GNUC__) && SIZEOF_VOID_P <= 4 && !defined(_ABIN32)
1418 #define RTS_LIBGCC_SYMBOLS \
1419 SymI_NeedsProto(__divdi3) \
1420 SymI_NeedsProto(__udivdi3) \
1421 SymI_NeedsProto(__moddi3) \
1422 SymI_NeedsProto(__umoddi3) \
1423 SymI_NeedsProto(__muldi3) \
1424 SymI_NeedsProto(__ashldi3) \
1425 SymI_NeedsProto(__ashrdi3) \
1426 SymI_NeedsProto(__lshrdi3) \
1427 SymI_NeedsProto(__fixunsdfdi)
1428 #else
1429 #define RTS_LIBGCC_SYMBOLS
1430 #endif
1431
1432 #if defined(darwin_HOST_OS) && defined(powerpc_HOST_ARCH)
1433 // Symbols that don't have a leading underscore
1434 // on Mac OS X. They have to receive special treatment,
1435 // see machoInitSymbolsWithoutUnderscore()
1436 #define RTS_MACHO_NOUNDERLINE_SYMBOLS \
1437 SymI_NeedsProto(saveFP) \
1438 SymI_NeedsProto(restFP)
1439 #endif
1440
1441 /* entirely bogus claims about types of these symbols */
1442 #define SymI_NeedsProto(vvv) extern void vvv(void);
1443 #if defined(COMPILING_WINDOWS_DLL)
1444 #define SymE_HasProto(vvv) SymE_HasProto(vvv);
1445 # if defined(x86_64_HOST_ARCH)
1446 # define SymE_NeedsProto(vvv) extern void __imp_ ## vvv (void);
1447 # else
1448 # define SymE_NeedsProto(vvv) extern void _imp__ ## vvv (void);
1449 # endif
1450 #else
1451 #define SymE_NeedsProto(vvv) SymI_NeedsProto(vvv);
1452 #define SymE_HasProto(vvv) SymI_HasProto(vvv)
1453 #endif
1454 #define SymI_HasProto(vvv) /**/
1455 #define SymI_HasProto_redirect(vvv,xxx) /**/
1456 RTS_SYMBOLS
1457 RTS_RET_SYMBOLS
1458 RTS_POSIX_ONLY_SYMBOLS
1459 RTS_MINGW_ONLY_SYMBOLS
1460 RTS_CYGWIN_ONLY_SYMBOLS
1461 RTS_DARWIN_ONLY_SYMBOLS
1462 RTS_LIBGCC_SYMBOLS
1463 RTS_LIBFFI_SYMBOLS
1464 #undef SymI_NeedsProto
1465 #undef SymI_HasProto
1466 #undef SymI_HasProto_redirect
1467 #undef SymE_HasProto
1468 #undef SymE_NeedsProto
1469
1470 #ifdef LEADING_UNDERSCORE
1471 #define MAYBE_LEADING_UNDERSCORE_STR(s) ("_" s)
1472 #else
1473 #define MAYBE_LEADING_UNDERSCORE_STR(s) (s)
1474 #endif
1475
1476 #define SymI_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1477 (void*)(&(vvv)) },
1478 #define SymE_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1479 (void*)DLL_IMPORT_DATA_REF(vvv) },
1480
1481 #define SymI_NeedsProto(vvv) SymI_HasProto(vvv)
1482 #define SymE_NeedsProto(vvv) SymE_HasProto(vvv)
1483
1484 // SymI_HasProto_redirect allows us to redirect references to one symbol to
1485 // another symbol. See newCAF/newDynCAF for an example.
1486 #define SymI_HasProto_redirect(vvv,xxx) \
1487 { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1488 (void*)(&(xxx)) },
1489
1490 static RtsSymbolVal rtsSyms[] = {
1491 RTS_SYMBOLS
1492 RTS_RET_SYMBOLS
1493 RTS_POSIX_ONLY_SYMBOLS
1494 RTS_MINGW_ONLY_SYMBOLS
1495 RTS_CYGWIN_ONLY_SYMBOLS
1496 RTS_DARWIN_ONLY_SYMBOLS
1497 RTS_LIBGCC_SYMBOLS
1498 RTS_LIBFFI_SYMBOLS
1499 #if defined(darwin_HOST_OS) && defined(i386_HOST_ARCH)
1500 // dyld stub code contains references to this,
1501 // but it should never be called because we treat
1502 // lazy pointers as nonlazy.
1503 { "dyld_stub_binding_helper", (void*)0xDEADBEEF },
1504 #endif
1505 { 0, 0 } /* sentinel */
1506 };
1507
1508
1509 /* -----------------------------------------------------------------------------
1510 * Insert symbols into hash tables, checking for duplicates.
1511 *
1512 * Returns: 0 on failure, nonzero on success
1513 */
1514
1515 static int ghciInsertSymbolTable(
1516 pathchar* obj_name,
1517 HashTable *table,
1518 char* key,
1519 void *data,
1520 HsBool weak,
1521 ObjectCode *owner)
1522 {
1523 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1524 if (!pinfo) /* new entry */
1525 {
1526 pinfo = stgMallocBytes(sizeof (*pinfo), "ghciInsertToSymbolTable");
1527 pinfo->value = data;
1528 pinfo->owner = owner;
1529 pinfo->weak = weak;
1530 insertStrHashTable(table, key, pinfo);
1531 return 1;
1532 }
1533 else if ((!pinfo->weak || pinfo->value) && weak)
1534 {
1535 return 1; /* duplicate weak symbol, throw it away */
1536 }
1537 else if (pinfo->weak) /* weak symbol is in the table */
1538 {
1539 /* override the weak definition with the non-weak one */
1540 pinfo->value = data;
1541 pinfo->owner = owner;
1542 pinfo->weak = HS_BOOL_FALSE;
1543 return 1;
1544 }
1545 debugBelch(
1546 "GHC runtime linker: fatal error: I found a duplicate definition for symbol\n"
1547 " %s\n"
1548 "whilst processing object file\n"
1549 " %" PATH_FMT "\n"
1550 "This could be caused by:\n"
1551 " * Loading two different object files which export the same symbol\n"
1552 " * Specifying the same object file twice on the GHCi command line\n"
1553 " * An incorrect `package.conf' entry, causing some object to be\n"
1554 " loaded twice.\n",
1555 (char*)key,
1556 obj_name
1557 );
1558 return 0;
1559 }
1560
1561 static HsBool ghciLookupSymbolTable(HashTable *table,
1562 const char *key, void **result)
1563 {
1564 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1565 if (!pinfo) {
1566 *result = NULL;
1567 return HS_BOOL_FALSE;
1568 }
1569 if (pinfo->weak)
1570 IF_DEBUG(linker, debugBelch("lookup: promoting %s\n", key));
1571 /* Once it's looked up, it can no longer be overridden */
1572 pinfo->weak = HS_BOOL_FALSE;
1573
1574 *result = pinfo->value;
1575 return HS_BOOL_TRUE;
1576 }
1577
1578 static void ghciRemoveSymbolTable(HashTable *table, const char *key,
1579 ObjectCode *owner)
1580 {
1581 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1582 if (!pinfo || owner != pinfo->owner) return;
1583 removeStrHashTable(table, key, NULL);
1584 stgFree(pinfo);
1585 }
1586 /* -----------------------------------------------------------------------------
1587 * initialize the object linker
1588 */
1589
1590
1591 static int linker_init_done = 0 ;
1592
1593 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1594 static void *dl_prog_handle;
1595 static regex_t re_invalid;
1596 static regex_t re_realso;
1597 #ifdef THREADED_RTS
1598 static Mutex dl_mutex; // mutex to protect dlopen/dlerror critical section
1599 #endif
1600 #elif defined(OBJFORMAT_PEi386)
1601 void addDLLHandle(pathchar* dll_name, HINSTANCE instance);
1602 #endif
1603
1604 void initLinker (void)
1605 {
1606 // default to retaining CAFs for backwards compatibility. Most
1607 // users will want initLinker_(0): otherwise unloadObj() will not
1608 // be able to unload object files when they contain CAFs.
1609 initLinker_(1);
1610 }
1611
1612 void
1613 initLinker_ (int retain_cafs)
1614 {
1615 RtsSymbolVal *sym;
1616 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1617 int compileResult;
1618 #endif
1619
1620 IF_DEBUG(linker, debugBelch("initLinker: start\n"));
1621
1622 /* Make initLinker idempotent, so we can call it
1623 before every relevant operation; that means we
1624 don't need to initialise the linker separately */
1625 if (linker_init_done == 1) {
1626 IF_DEBUG(linker, debugBelch("initLinker: idempotent return\n"));
1627 return;
1628 } else {
1629 linker_init_done = 1;
1630 }
1631
1632 objects = NULL;
1633 unloaded_objects = NULL;
1634
1635 #if defined(THREADED_RTS) && (defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO))
1636 initMutex(&dl_mutex);
1637 #endif
1638 symhash = allocStrHashTable();
1639
1640 /* populate the symbol table with stuff from the RTS */
1641 for (sym = rtsSyms; sym->lbl != NULL; sym++) {
1642 if (! ghciInsertSymbolTable(WSTR("(GHCi built-in symbols)"),
1643 symhash, sym->lbl, sym->addr, HS_BOOL_FALSE, NULL)) {
1644 barf("ghciInsertSymbolTable failed");
1645 }
1646 IF_DEBUG(linker, debugBelch("initLinker: inserting rts symbol %s, %p\n", sym->lbl, sym->addr));
1647 }
1648 # if defined(OBJFORMAT_MACHO) && defined(powerpc_HOST_ARCH)
1649 machoInitSymbolsWithoutUnderscore();
1650 # endif
1651 /* GCC defines a special symbol __dso_handle which is resolved to NULL if
1652 referenced from a statically linked module. We need to mimic this, but
1653 we cannot use NULL because we use it to mean nonexistent symbols. So we
1654 use an arbitrary (hopefully unique) address here.
1655 */
1656 if (! ghciInsertSymbolTable(WSTR("(GHCi special symbols)"),
1657 symhash, "__dso_handle", (void *)0x12345687, HS_BOOL_FALSE, NULL)) {
1658 barf("ghciInsertSymbolTable failed");
1659 }
1660
1661 // Redurect newCAF to newDynCAF if retain_cafs is true.
1662 if (! ghciInsertSymbolTable(WSTR("(GHCi built-in symbols)"), symhash,
1663 MAYBE_LEADING_UNDERSCORE_STR("newCAF"),
1664 retain_cafs ? newDynCAF : newCAF,
1665 HS_BOOL_FALSE, NULL)) {
1666 barf("ghciInsertSymbolTable failed");
1667 }
1668
1669 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1670 # if defined(RTLD_DEFAULT)
1671 dl_prog_handle = RTLD_DEFAULT;
1672 # else
1673 dl_prog_handle = dlopen(NULL, RTLD_LAZY);
1674 # endif /* RTLD_DEFAULT */
1675
1676 compileResult = regcomp(&re_invalid,
1677 "(([^ \t()])+\\.so([^ \t:()])*):([ \t])*(invalid ELF header|file too short)",
1678 REG_EXTENDED);
1679 if (compileResult != 0) {
1680 barf("Compiling re_invalid failed");
1681 }
1682 compileResult = regcomp(&re_realso,
1683 "(GROUP|INPUT) *\\( *([^ )]+)",
1684 REG_EXTENDED);
1685 if (compileResult != 0) {
1686 barf("Compiling re_realso failed");
1687 }
1688 # endif
1689
1690 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1691 if (RtsFlags.MiscFlags.linkerMemBase != 0) {
1692 // User-override for mmap_32bit_base
1693 mmap_32bit_base = (void*)RtsFlags.MiscFlags.linkerMemBase;
1694 }
1695 #endif
1696
1697 #if defined(mingw32_HOST_OS)
1698 /*
1699 * These two libraries cause problems when added to the static link,
1700 * but are necessary for resolving symbols in GHCi, hence we load
1701 * them manually here.
1702 */
1703 addDLL(WSTR("msvcrt"));
1704 addDLL(WSTR("kernel32"));
1705 addDLLHandle(WSTR("*.exe"), GetModuleHandle(NULL));
1706 #endif
1707
1708 IF_DEBUG(linker, debugBelch("initLinker: done\n"));
1709 return;
1710 }
1711
1712 void
1713 exitLinker( void ) {
1714 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1715 if (linker_init_done == 1) {
1716 regfree(&re_invalid);
1717 regfree(&re_realso);
1718 #ifdef THREADED_RTS
1719 closeMutex(&dl_mutex);
1720 #endif
1721 }
1722 #endif
1723 if (linker_init_done == 1) {
1724 freeHashTable(symhash, free);
1725 }
1726 }
1727
1728 /* -----------------------------------------------------------------------------
1729 * Loading DLL or .so dynamic libraries
1730 * -----------------------------------------------------------------------------
1731 *
1732 * Add a DLL from which symbols may be found. In the ELF case, just
1733 * do RTLD_GLOBAL-style add, so no further messing around needs to
1734 * happen in order that symbols in the loaded .so are findable --
1735 * lookupSymbol() will subsequently see them by dlsym on the program's
1736 * dl-handle. Returns NULL if success, otherwise ptr to an err msg.
1737 *
1738 * In the PEi386 case, open the DLLs and put handles to them in a
1739 * linked list. When looking for a symbol, try all handles in the
1740 * list. This means that we need to load even DLLs that are guaranteed
1741 * to be in the ghc.exe image already, just so we can get a handle
1742 * to give to loadSymbol, so that we can find the symbols. For such
1743 * libraries, the LoadLibrary call should be a no-op except for returning
1744 * the handle.
1745 *
1746 */
1747
1748 #if defined(OBJFORMAT_PEi386)
1749 /* A record for storing handles into DLLs. */
1750
1751 typedef
1752 struct _OpenedDLL {
1753 pathchar* name;
1754 struct _OpenedDLL* next;
1755 HINSTANCE instance;
1756 }
1757 OpenedDLL;
1758
1759 /* A list thereof. */
1760 static OpenedDLL* opened_dlls = NULL;
1761
1762 /* A record for storing indirectly linked functions from DLLs. */
1763 typedef
1764 struct _IndirectAddr {
1765 void* addr;
1766 struct _IndirectAddr* next;
1767 }
1768 IndirectAddr;
1769
1770 /* A list thereof. */
1771 static IndirectAddr* indirects = NULL;
1772
1773 /* Adds a DLL instance to the list of DLLs in which to search for symbols. */
1774 void addDLLHandle(pathchar* dll_name, HINSTANCE instance) {
1775 OpenedDLL* o_dll;
1776 o_dll = stgMallocBytes( sizeof(OpenedDLL), "addDLLHandle" );
1777 o_dll->name = dll_name ? pathdup(dll_name) : NULL;
1778 o_dll->instance = instance;
1779 o_dll->next = opened_dlls;
1780 opened_dlls = o_dll;
1781 }
1782
1783 #endif
1784
1785 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1786
1787 /* Suppose in ghci we load a temporary SO for a module containing
1788 f = 1
1789 and then modify the module, recompile, and load another temporary
1790 SO with
1791 f = 2
1792 Then as we don't unload the first SO, dlsym will find the
1793 f = 1
1794 symbol whereas we want the
1795 f = 2
1796 symbol. We therefore need to keep our own SO handle list, and
1797 try SOs in the right order. */
1798
1799 typedef
1800 struct _OpenedSO {
1801 struct _OpenedSO* next;
1802 void *handle;
1803 }
1804 OpenedSO;
1805
1806 /* A list thereof. */
1807 static OpenedSO* openedSOs = NULL;
1808
1809 static const char *
1810 internal_dlopen(const char *dll_name)
1811 {
1812 OpenedSO* o_so;
1813 void *hdl;
1814 const char *errmsg;
1815 char *errmsg_copy;
1816
1817 // omitted: RTLD_NOW
1818 // see http://www.haskell.org/pipermail/cvs-ghc/2007-September/038570.html
1819 IF_DEBUG(linker,
1820 debugBelch("internal_dlopen: dll_name = '%s'\n", dll_name));
1821
1822 //-------------- Begin critical section ------------------
1823 // This critical section is necessary because dlerror() is not
1824 // required to be reentrant (see POSIX -- IEEE Std 1003.1-2008)
1825 // Also, the error message returned must be copied to preserve it
1826 // (see POSIX also)
1827
1828 ACQUIRE_LOCK(&dl_mutex);
1829 hdl = dlopen(dll_name, RTLD_LAZY | RTLD_GLOBAL);
1830
1831 errmsg = NULL;
1832 if (hdl == NULL) {
1833 /* dlopen failed; return a ptr to the error msg. */
1834 errmsg = dlerror();
1835 if (errmsg == NULL) errmsg = "addDLL: unknown error";
1836 errmsg_copy = stgMallocBytes(strlen(errmsg)+1, "addDLL");
1837 strcpy(errmsg_copy, errmsg);
1838 errmsg = errmsg_copy;
1839 }
1840 o_so = stgMallocBytes(sizeof(OpenedSO), "addDLL");
1841 o_so->handle = hdl;
1842 o_so->next = openedSOs;
1843 openedSOs = o_so;
1844
1845 RELEASE_LOCK(&dl_mutex);
1846 //--------------- End critical section -------------------
1847
1848 return errmsg;
1849 }
1850
1851 static void *
1852 internal_dlsym(void *hdl, const char *symbol) {
1853 OpenedSO* o_so;
1854 void *v;
1855
1856 // We acquire dl_mutex as concurrent dl* calls may alter dlerror
1857 ACQUIRE_LOCK(&dl_mutex);
1858 dlerror();
1859 for (o_so = openedSOs; o_so != NULL; o_so = o_so->next) {
1860 v = dlsym(o_so->handle, symbol);
1861 if (dlerror() == NULL) {
1862 RELEASE_LOCK(&dl_mutex);
1863 return v;
1864 }
1865 }
1866 v = dlsym(hdl, symbol);
1867 RELEASE_LOCK(&dl_mutex);
1868 return v;
1869 }
1870 # endif
1871
1872 const char *
1873 addDLL( pathchar *dll_name )
1874 {
1875 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1876 /* ------------------- ELF DLL loader ------------------- */
1877
1878 #define NMATCH 5
1879 regmatch_t match[NMATCH];
1880 const char *errmsg;
1881 FILE* fp;
1882 size_t match_length;
1883 #define MAXLINE 1000
1884 char line[MAXLINE];
1885 int result;
1886
1887 initLinker();
1888
1889 IF_DEBUG(linker, debugBelch("addDLL: dll_name = '%s'\n", dll_name));
1890 errmsg = internal_dlopen(dll_name);
1891
1892 if (errmsg == NULL) {
1893 return NULL;
1894 }
1895
1896 // GHC Trac ticket #2615
1897 // On some systems (e.g., Gentoo Linux) dynamic files (e.g. libc.so)
1898 // contain linker scripts rather than ELF-format object code. This
1899 // code handles the situation by recognizing the real object code
1900 // file name given in the linker script.
1901 //
1902 // If an "invalid ELF header" error occurs, it is assumed that the
1903 // .so file contains a linker script instead of ELF object code.
1904 // In this case, the code looks for the GROUP ( ... ) linker
1905 // directive. If one is found, the first file name inside the
1906 // parentheses is treated as the name of a dynamic library and the
1907 // code attempts to dlopen that file. If this is also unsuccessful,
1908 // an error message is returned.
1909
1910 // see if the error message is due to an invalid ELF header
1911 IF_DEBUG(linker, debugBelch("errmsg = '%s'\n", errmsg));
1912 result = regexec(&re_invalid, errmsg, (size_t) NMATCH, match, 0);
1913 IF_DEBUG(linker, debugBelch("result = %i\n", result));
1914 if (result == 0) {
1915 // success -- try to read the named file as a linker script
1916 match_length = (size_t) stg_min((match[1].rm_eo - match[1].rm_so),
1917 MAXLINE-1);
1918 strncpy(line, (errmsg+(match[1].rm_so)),match_length);
1919 line[match_length] = '\0'; // make sure string is null-terminated
1920 IF_DEBUG(linker, debugBelch ("file name = '%s'\n", line));
1921 if ((fp = fopen(line, "r")) == NULL) {
1922 return errmsg; // return original error if open fails
1923 }
1924 // try to find a GROUP or INPUT ( ... ) command
1925 while (fgets(line, MAXLINE, fp) != NULL) {
1926 IF_DEBUG(linker, debugBelch("input line = %s", line));
1927 if (regexec(&re_realso, line, (size_t) NMATCH, match, 0) == 0) {
1928 // success -- try to dlopen the first named file
1929 IF_DEBUG(linker, debugBelch("match%s\n",""));
1930 line[match[2].rm_eo] = '\0';
1931 stgFree((void*)errmsg); // Free old message before creating new one
1932 errmsg = internal_dlopen(line+match[2].rm_so);
1933 break;
1934 }
1935 // if control reaches here, no GROUP or INPUT ( ... ) directive
1936 // was found and the original error message is returned to the
1937 // caller
1938 }
1939 fclose(fp);
1940 }
1941 return errmsg;
1942
1943 # elif defined(OBJFORMAT_PEi386)
1944 /* ------------------- Win32 DLL loader ------------------- */
1945
1946 pathchar* buf;
1947 OpenedDLL* o_dll;
1948 HINSTANCE instance;
1949
1950 initLinker();
1951
1952 /* debugBelch("\naddDLL; dll_name = `%s'\n", dll_name); */
1953
1954 /* See if we've already got it, and ignore if so. */
1955 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
1956 if (0 == pathcmp(o_dll->name, dll_name))
1957 return NULL;
1958 }
1959
1960 /* The file name has no suffix (yet) so that we can try
1961 both foo.dll and foo.drv
1962
1963 The documentation for LoadLibrary says:
1964 If no file name extension is specified in the lpFileName
1965 parameter, the default library extension .dll is
1966 appended. However, the file name string can include a trailing
1967 point character (.) to indicate that the module name has no
1968 extension. */
1969
1970 buf = stgMallocBytes((pathlen(dll_name) + 10) * sizeof(wchar_t), "addDLL");
1971 swprintf(buf, L"%s.DLL", dll_name);
1972 instance = LoadLibraryW(buf);
1973 if (instance == NULL) {
1974 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1975 // KAA: allow loading of drivers (like winspool.drv)
1976 swprintf(buf, L"%s.DRV", dll_name);
1977 instance = LoadLibraryW(buf);
1978 if (instance == NULL) {
1979 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1980 // #1883: allow loading of unix-style libfoo.dll DLLs
1981 swprintf(buf, L"lib%s.DLL", dll_name);
1982 instance = LoadLibraryW(buf);
1983 if (instance == NULL) {
1984 goto error;
1985 }
1986 }
1987 }
1988 stgFree(buf);
1989
1990 addDLLHandle(dll_name, instance);
1991
1992 return NULL;
1993
1994 error:
1995 stgFree(buf);
1996 sysErrorBelch("%" PATH_FMT, dll_name);
1997
1998 /* LoadLibrary failed; return a ptr to the error msg. */
1999 return "addDLL: could not load DLL";
2000
2001 # else
2002 barf("addDLL: not implemented on this platform");
2003 # endif
2004 }
2005
2006 /* -----------------------------------------------------------------------------
2007 * insert a symbol in the hash table
2008 *
2009 * Returns: 0 on failure, nozero on success
2010 */
2011 HsInt insertSymbol(pathchar* obj_name, char* key, void* data)
2012 {
2013 return ghciInsertSymbolTable(obj_name, symhash, key, data, HS_BOOL_FALSE, NULL);
2014 }
2015
2016 /* -----------------------------------------------------------------------------
2017 * lookup a symbol in the hash table
2018 */
2019 void *
2020 lookupSymbol( char *lbl )
2021 {
2022 void *val;
2023 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s\n", lbl));
2024 initLinker() ;
2025 ASSERT(symhash != NULL);
2026
2027 if (!ghciLookupSymbolTable(symhash, lbl, &val)) {
2028 IF_DEBUG(linker, debugBelch("lookupSymbol: symbol not found\n"));
2029 # if defined(OBJFORMAT_ELF)
2030 return internal_dlsym(dl_prog_handle, lbl);
2031 # elif defined(OBJFORMAT_MACHO)
2032 # if HAVE_DLFCN_H
2033 /* On OS X 10.3 and later, we use dlsym instead of the old legacy
2034 interface.
2035
2036 HACK: On OS X, all symbols are prefixed with an underscore.
2037 However, dlsym wants us to omit the leading underscore from the
2038 symbol name -- the dlsym routine puts it back on before searching
2039 for the symbol. For now, we simply strip it off here (and ONLY
2040 here).
2041 */
2042 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s with dlsym\n", lbl));
2043 ASSERT(lbl[0] == '_');
2044 return internal_dlsym(dl_prog_handle, lbl + 1);
2045 # else
2046 if (NSIsSymbolNameDefined(lbl)) {
2047 NSSymbol symbol = NSLookupAndBindSymbol(lbl);
2048 return NSAddressOfSymbol(symbol);
2049 } else {
2050 return NULL;
2051 }
2052 # endif /* HAVE_DLFCN_H */
2053 # elif defined(OBJFORMAT_PEi386)
2054 void* sym;
2055
2056 sym = lookupSymbolInDLLs((unsigned char*)lbl);
2057 if (sym != NULL) { return sym; };
2058
2059 // Also try looking up the symbol without the @N suffix. Some
2060 // DLLs have the suffixes on their symbols, some don't.
2061 zapTrailingAtSign ( (unsigned char*)lbl );
2062 sym = lookupSymbolInDLLs((unsigned char*)lbl);
2063 if (sym != NULL) { return sym; };
2064 return NULL;
2065
2066 # else
2067 ASSERT(2+2 == 5);
2068 return NULL;
2069 # endif
2070 } else {
2071 IF_DEBUG(linker, debugBelch("lookupSymbol: value of %s is %p\n", lbl, val));
2072 return val;
2073 }
2074 }
2075
2076 /* -----------------------------------------------------------------------------
2077 Create a StablePtr for a foreign export. This is normally called by
2078 a C function with __attribute__((constructor)), which is generated
2079 by GHC and linked into the module.
2080
2081 If the object code is being loaded dynamically, then we remember
2082 which StablePtrs were allocated by the constructors and free them
2083 again in unloadObj().
2084 -------------------------------------------------------------------------- */
2085
2086 static ObjectCode *loading_obj = NULL;
2087
2088 StgStablePtr foreignExportStablePtr (StgPtr p)
2089 {
2090 ForeignExportStablePtr *fe_sptr;
2091 StgStablePtr *sptr;
2092
2093 sptr = getStablePtr(p);
2094
2095 if (loading_obj != NULL) {
2096 fe_sptr = stgMallocBytes(sizeof(ForeignExportStablePtr),
2097 "foreignExportStablePtr");
2098 fe_sptr->stable_ptr = sptr;
2099 fe_sptr->next = loading_obj->stable_ptrs;
2100 loading_obj->stable_ptrs = fe_sptr;
2101 }
2102
2103 return sptr;
2104 }
2105
2106
2107 /* -----------------------------------------------------------------------------
2108 * Debugging aid: look in GHCi's object symbol tables for symbols
2109 * within DELTA bytes of the specified address, and show their names.
2110 */
2111 #ifdef DEBUG
2112 void ghci_enquire ( char* addr );
2113
2114 void ghci_enquire ( char* addr )
2115 {
2116 int i;
2117 char* sym;
2118 char* a;
2119 const int DELTA = 64;
2120 ObjectCode* oc;
2121
2122 initLinker();
2123
2124 for (oc = objects; oc; oc = oc->next) {
2125 for (i = 0; i < oc->n_symbols; i++) {
2126 sym = oc->symbols[i];
2127 if (sym == NULL) continue;
2128 a = NULL;
2129 if (a == NULL) {
2130 ghciLookupSymbolTable(symhash, sym, (void **)&a);
2131 }
2132 if (a == NULL) {
2133 // debugBelch("ghci_enquire: can't find %s\n", sym);
2134 }
2135 else if (addr-DELTA <= a && a <= addr+DELTA) {
2136 debugBelch("%p + %3d == `%s'\n", addr, (int)(a - addr), sym);
2137 }
2138 }
2139 }
2140 }
2141 #endif
2142
2143 #ifdef USE_MMAP
2144 #define ROUND_UP(x,size) ((x + size - 1) & ~(size - 1))
2145
2146 //
2147 // Returns NULL on failure.
2148 //
2149 static void * mmapForLinker (size_t bytes, nat flags, int fd)
2150 {
2151 void *map_addr = NULL;
2152 void *result;
2153 int pagesize;
2154 StgWord size;
2155 static nat fixed = 0;
2156
2157 IF_DEBUG(linker, debugBelch("mmapForLinker: start\n"));
2158 pagesize = getpagesize();
2159 size = ROUND_UP(bytes, pagesize);
2160
2161 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2162 mmap_again:
2163
2164 if (mmap_32bit_base != 0) {
2165 map_addr = mmap_32bit_base;
2166 }
2167 #endif
2168
2169 IF_DEBUG(linker,
2170 debugBelch("mmapForLinker: \tprotection %#0x\n",
2171 PROT_EXEC | PROT_READ | PROT_WRITE));
2172 IF_DEBUG(linker,
2173 debugBelch("mmapForLinker: \tflags %#0x\n",
2174 MAP_PRIVATE | TRY_MAP_32BIT | fixed | flags));
2175
2176 result = mmap(map_addr, size,
2177 PROT_EXEC|PROT_READ|PROT_WRITE,
2178 MAP_PRIVATE|TRY_MAP_32BIT|fixed|flags, fd, 0);
2179
2180 if (result == MAP_FAILED) {
2181 sysErrorBelch("mmap %" FMT_Word " bytes at %p",(W_)size,map_addr);
2182 errorBelch("Try specifying an address with +RTS -xm<addr> -RTS");
2183 return NULL;
2184 }
2185
2186 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2187 if (mmap_32bit_base != 0) {
2188 if (result == map_addr) {
2189 mmap_32bit_base = (StgWord8*)map_addr + size;
2190 } else {
2191 if ((W_)result > 0x80000000) {
2192 // oops, we were given memory over 2Gb
2193 munmap(result,size);
2194 #if defined(freebsd_HOST_OS) || \
2195 defined(kfreebsdgnu_HOST_OS) || \
2196 defined(dragonfly_HOST_OS)
2197 // Some platforms require MAP_FIXED. This is normally
2198 // a bad idea, because MAP_FIXED will overwrite
2199 // existing mappings.
2200 fixed = MAP_FIXED;
2201 goto mmap_again;
2202 #else
2203 errorBelch("loadObj: failed to mmap() memory below 2Gb; "
2204 "asked for %lu bytes at %p. "
2205 "Try specifying an address with +RTS -xm<addr> -RTS",
2206 size, map_addr);
2207 return NULL;
2208 #endif
2209 } else {
2210 // hmm, we were given memory somewhere else, but it's
2211 // still under 2Gb so we can use it. Next time, ask
2212 // for memory right after the place we just got some
2213 mmap_32bit_base = (StgWord8*)result + size;
2214 }
2215 }
2216 } else {
2217 if ((W_)result > 0x80000000) {
2218 // oops, we were given memory over 2Gb
2219 // ... try allocating memory somewhere else?;
2220 debugTrace(DEBUG_linker,
2221 "MAP_32BIT didn't work; gave us %lu bytes at 0x%p",
2222 bytes, result);
2223 munmap(result, size);
2224
2225 // Set a base address and try again... (guess: 1Gb)
2226 mmap_32bit_base = (void*)0x40000000;
2227 goto mmap_again;
2228 }
2229 }
2230 #endif
2231
2232 IF_DEBUG(linker,
2233 debugBelch("mmapForLinker: mapped %" FMT_Word
2234 " bytes starting at %p\n", (W_)size, result));
2235 IF_DEBUG(linker,
2236 debugBelch("mmapForLinker: done\n"));
2237
2238 return result;
2239 }
2240 #endif // USE_MMAP
2241
2242 static void removeOcSymbols (ObjectCode *oc)
2243 {
2244 if (oc->symbols == NULL) return;
2245
2246 /* Remove all the mappings for the symbols within this object..
2247 */
2248 int i;
2249 for (i = 0; i < oc->n_symbols; i++) {
2250 if (oc->symbols[i] != NULL) {
2251 ghciRemoveSymbolTable(symhash, oc->symbols[i], oc);
2252 }
2253 }
2254 }
2255
2256 /*
2257 * freeObjectCode() releases all the pieces of an ObjectCode. It is called by
2258 * the GC when a previously unloaded ObjectCode has been determined to be
2259 * unused, and when an error occurs during loadObj().
2260 */
2261 void freeObjectCode (ObjectCode *oc)
2262 {
2263 if (oc->symbols != NULL) {
2264 stgFree(oc->symbols);
2265 oc->symbols = NULL;
2266 }
2267
2268 {
2269 Section *s, *nexts;
2270
2271 for (s = oc->sections; s != NULL; s = nexts) {
2272 nexts = s->next;
2273 stgFree(s);
2274 }
2275 }
2276
2277 freeProddableBlocks(oc);
2278
2279 #ifdef USE_MMAP
2280 int pagesize, size, r;
2281
2282 pagesize = getpagesize();
2283 size = ROUND_UP(oc->fileSize, pagesize);
2284
2285 r = munmap(oc->image, size);
2286 if (r == -1) {
2287 sysErrorBelch("munmap");
2288 }
2289
2290 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2291 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2292 if (!USE_CONTIGUOUS_MMAP && oc->symbol_extras != NULL)
2293 {
2294 munmap(oc->symbol_extras,
2295 ROUND_UP(sizeof(SymbolExtra) * oc->n_symbol_extras, pagesize));
2296 }
2297 #endif
2298 #endif
2299
2300 #else
2301
2302 #ifndef mingw32_HOST_OS
2303 stgFree(oc->image);
2304 #else
2305 VirtualFree(oc->image - PEi386_IMAGE_OFFSET, 0, MEM_RELEASE);
2306
2307 IndirectAddr *ia, *ia_next;
2308 ia = indirects;
2309 while (ia != NULL) {
2310 ia_next = ia->next;
2311 stgFree(ia);
2312 ia = ia_next;
2313 }
2314
2315 #endif
2316
2317 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2318 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2319 stgFree(oc->symbol_extras);
2320 #endif
2321 #endif
2322
2323 #endif
2324
2325 stgFree(oc->fileName);
2326 stgFree(oc->archiveMemberName);
2327 stgFree(oc);
2328 }
2329
2330
2331 static ObjectCode*
2332 mkOc( pathchar *path, char *image, int imageSize,
2333 char *archiveMemberName
2334 #ifndef USE_MMAP
2335 #ifdef darwin_HOST_OS
2336 , int misalignment
2337 #endif
2338 #endif
2339 ) {
2340 ObjectCode* oc;
2341
2342 IF_DEBUG(linker, debugBelch("mkOc: start\n"));
2343 oc = stgMallocBytes(sizeof(ObjectCode), "mkOc(oc)");
2344
2345 # if defined(OBJFORMAT_ELF)
2346 oc->formatName = "ELF";
2347 # elif defined(OBJFORMAT_PEi386)
2348 oc->formatName = "PEi386";
2349 # elif defined(OBJFORMAT_MACHO)
2350 oc->formatName = "Mach-O";
2351 # else
2352 stgFree(oc);
2353 barf("loadObj: not implemented on this platform");
2354 # endif
2355
2356 oc->image = image;
2357 oc->fileName = pathdup(path);
2358
2359 if (archiveMemberName) {
2360 oc->archiveMemberName = stgMallocBytes( strlen(archiveMemberName)+1, "loadObj" );
2361 strcpy(oc->archiveMemberName, archiveMemberName);
2362 }
2363 else {
2364 oc->archiveMemberName = NULL;
2365 }
2366
2367 oc->fileSize = imageSize;
2368 oc->symbols = NULL;
2369 oc->sections = NULL;
2370 oc->proddables = NULL;
2371 oc->stable_ptrs = NULL;
2372 oc->symbol_extras = NULL;
2373
2374 #ifndef USE_MMAP
2375 #ifdef darwin_HOST_OS
2376 oc->misalignment = misalignment;
2377 #endif
2378 #endif
2379
2380 /* chain it onto the list of objects */
2381 oc->next = NULL;
2382
2383 IF_DEBUG(linker, debugBelch("mkOc: done\n"));
2384 return oc;
2385 }
2386
2387 /* -----------------------------------------------------------------------------
2388 * Check if an object or archive is already loaded.
2389 *
2390 * Returns: 1 if the path is already loaded, 0 otherwise.
2391 */
2392 static HsInt
2393 isAlreadyLoaded( pathchar *path )
2394 {
2395 ObjectCode *o;
2396 for (o = objects; o; o = o->next) {
2397 if (0 == pathcmp(o->fileName, path)) {
2398 return 1; /* already loaded */
2399 }
2400 }
2401 return 0; /* not loaded yet */
2402 }
2403
2404 HsInt
2405 loadArchive( pathchar *path )
2406 {
2407 ObjectCode* oc;
2408 char *image;
2409 int memberSize;
2410 FILE *f;
2411 int n;
2412 size_t thisFileNameSize;
2413 char *fileName;
2414 size_t fileNameSize;
2415 int isObject, isGnuIndex, isThin;
2416 char tmp[20];
2417 char *gnuFileIndex;
2418 int gnuFileIndexSize;
2419 #if defined(darwin_HOST_OS)
2420 int i;
2421 uint32_t nfat_arch, nfat_offset, cputype, cpusubtype;
2422 #if defined(i386_HOST_ARCH)
2423 const uint32_t mycputype = CPU_TYPE_X86;
2424 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_ALL;
2425 #elif defined(x86_64_HOST_ARCH)
2426 const uint32_t mycputype = CPU_TYPE_X86_64;
2427 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_64_ALL;
2428 #elif defined(powerpc_HOST_ARCH)
2429 const uint32_t mycputype = CPU_TYPE_POWERPC;
2430 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2431 #elif defined(powerpc64_HOST_ARCH)
2432 const uint32_t mycputype = CPU_TYPE_POWERPC64;
2433 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2434 #else
2435 #error Unknown Darwin architecture
2436 #endif
2437 #if !defined(USE_MMAP)
2438 int misalignment;
2439 #endif
2440 #endif
2441
2442 /* TODO: don't call barf() on error, instead return an error code, freeing
2443 * all resources correctly. This function is pretty complex, so it needs
2444 * to be refactored to make this practical. */
2445
2446 initLinker();
2447
2448 IF_DEBUG(linker, debugBelch("loadArchive: start\n"));
2449 IF_DEBUG(linker, debugBelch("loadArchive: Loading archive `%" PATH_FMT" '\n", path));
2450
2451 /* Check that we haven't already loaded this archive.
2452 Ignore requests to load multiple times */
2453 if (isAlreadyLoaded(path)) {
2454 IF_DEBUG(linker,
2455 debugBelch("ignoring repeated load of %" PATH_FMT "\n", path));
2456 return 1; /* success */
2457 }
2458
2459 gnuFileIndex = NULL;
2460 gnuFileIndexSize = 0;
2461
2462 fileNameSize = 32;
2463 fileName = stgMallocBytes(fileNameSize, "loadArchive(fileName)");
2464
2465 isThin = 0;
2466
2467 f = pathopen(path, WSTR("rb"));
2468 if (!f)
2469 barf("loadObj: can't read `%s'", path);
2470
2471 /* Check if this is an archive by looking for the magic "!<arch>\n"
2472 * string. Usually, if this fails, we barf and quit. On Darwin however,
2473 * we may have a fat archive, which contains archives for more than
2474 * one architecture. Fat archives start with the magic number 0xcafebabe,
2475 * always stored big endian. If we find a fat_header, we scan through
2476 * the fat_arch structs, searching through for one for our host
2477 * architecture. If a matching struct is found, we read the offset
2478 * of our archive data (nfat_offset) and seek forward nfat_offset bytes
2479 * from the start of the file.
2480 *
2481 * A subtlety is that all of the members of the fat_header and fat_arch
2482 * structs are stored big endian, so we need to call byte order
2483 * conversion functions.
2484 *
2485 * If we find the appropriate architecture in a fat archive, we gobble
2486 * its magic "!<arch>\n" string and continue processing just as if
2487 * we had a single architecture archive.
2488 */
2489
2490 n = fread ( tmp, 1, 8, f );
2491 if (n != 8)
2492 barf("loadArchive: Failed reading header from `%s'", path);
2493 if (strncmp(tmp, "!<arch>\n", 8) == 0) {}
2494 #if !defined(mingw32_HOST_OS)
2495 /* See Note [thin archives on Windows] */
2496 else if (strncmp(tmp, "!<thin>\n", 8) == 0) {
2497 isThin = 1;
2498 }
2499 #endif
2500 #if defined(darwin_HOST_OS)
2501 /* Not a standard archive, look for a fat archive magic number: */
2502 else if (ntohl(*(uint32_t *)tmp) == FAT_MAGIC) {
2503 nfat_arch = ntohl(*(uint32_t *)(tmp + 4));
2504 IF_DEBUG(linker, debugBelch("loadArchive: found a fat archive containing %d architectures\n", nfat_arch));
2505 nfat_offset = 0;
2506
2507 for (i = 0; i < (int)nfat_arch; i++) {
2508 /* search for the right arch */
2509 n = fread( tmp, 1, 20, f );
2510 if (n != 8)
2511 barf("loadArchive: Failed reading arch from `%s'", path);
2512 cputype = ntohl(*(uint32_t *)tmp);
2513 cpusubtype = ntohl(*(uint32_t *)(tmp + 4));
2514
2515 if (cputype == mycputype && cpusubtype == mycpusubtype) {
2516 IF_DEBUG(linker, debugBelch("loadArchive: found my archive in a fat archive\n"));
2517 nfat_offset = ntohl(*(uint32_t *)(tmp + 8));
2518 break;
2519 }
2520 }
2521
2522 if (nfat_offset == 0) {
2523 barf ("loadArchive: searched %d architectures, but no host arch found", (int)nfat_arch);
2524 }
2525 else {
2526 n = fseek( f, nfat_offset, SEEK_SET );
2527 if (n != 0)
2528 barf("loadArchive: Failed to seek to arch in `%s'", path);
2529 n = fread ( tmp, 1, 8, f );
2530 if (n != 8)
2531 barf("loadArchive: Failed reading header from `%s'", path);
2532 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2533 barf("loadArchive: couldn't find archive in `%s' at offset %d", path, nfat_offset);
2534 }
2535 }
2536 }
2537 else {
2538 barf("loadArchive: Neither an archive, nor a fat archive: `%s'", path);
2539 }
2540 #else
2541 else {
2542 barf("loadArchive: Not an archive: `%s'", path);
2543 }
2544 #endif
2545
2546 IF_DEBUG(linker, debugBelch("loadArchive: loading archive contents\n"));
2547
2548 while(1) {
2549 n = fread ( fileName, 1, 16, f );
2550 if (n != 16) {
2551 if (feof(f)) {
2552 IF_DEBUG(linker, debugBelch("loadArchive: EOF while reading from '%" PATH_FMT "'\n", path));
2553 break;
2554 }
2555 else {
2556 barf("loadArchive: Failed reading file name from `%s'", path);
2557 }
2558 }
2559
2560 #if defined(darwin_HOST_OS)
2561 if (strncmp(fileName, "!<arch>\n", 8) == 0) {
2562 IF_DEBUG(linker, debugBelch("loadArchive: found the start of another archive, breaking\n"));
2563 break;
2564 }
2565 #endif
2566
2567 n = fread ( tmp, 1, 12, f );
2568 if (n != 12)
2569 barf("loadArchive: Failed reading mod time from `%s'", path);
2570 n = fread ( tmp, 1, 6, f );
2571 if (n != 6)
2572 barf("loadArchive: Failed reading owner from `%s'", path);
2573 n = fread ( tmp, 1, 6, f );
2574 if (n != 6)
2575 barf("loadArchive: Failed reading group from `%s'", path);
2576 n = fread ( tmp, 1, 8, f );
2577 if (n != 8)
2578 barf("loadArchive: Failed reading mode from `%s'", path);
2579 n = fread ( tmp, 1, 10, f );
2580 if (n != 10)
2581 barf("loadArchive: Failed reading size from `%s'", path);
2582 tmp[10] = '\0';
2583 for (n = 0; isdigit(tmp[n]); n++);
2584 tmp[n] = '\0';
2585 memberSize = atoi(tmp);
2586
2587 IF_DEBUG(linker, debugBelch("loadArchive: size of this archive member is %d\n", memberSize));
2588 n = fread ( tmp, 1, 2, f );
2589 if (n != 2)
2590 barf("loadArchive: Failed reading magic from `%s'", path);
2591 if (strncmp(tmp, "\x60\x0A", 2) != 0)
2592 barf("loadArchive: Failed reading magic from `%s' at %ld. Got %c%c",
2593 path, ftell(f), tmp[0], tmp[1]);
2594
2595 isGnuIndex = 0;
2596 /* Check for BSD-variant large filenames */
2597 if (0 == strncmp(fileName, "#1/", 3)) {
2598 fileName[16] = '\0';
2599 if (isdigit(fileName[3])) {
2600 for (n = 4; isdigit(fileName[n]); n++);
2601 fileName[n] = '\0';
2602 thisFileNameSize = atoi(fileName + 3);
2603 memberSize -= thisFileNameSize;
2604 if (thisFileNameSize >= fileNameSize) {
2605 /* Double it to avoid potentially continually
2606 increasing it by 1 */
2607 fileNameSize = thisFileNameSize * 2;
2608 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2609 }
2610 n = fread ( fileName, 1, thisFileNameSize, f );
2611 if (n != (int)thisFileNameSize) {
2612 barf("loadArchive: Failed reading filename from `%s'",
2613 path);
2614 }
2615 fileName[thisFileNameSize] = 0;
2616
2617 /* On OS X at least, thisFileNameSize is the size of the
2618 fileName field, not the length of the fileName
2619 itself. */
2620 thisFileNameSize = strlen(fileName);
2621 }
2622 else {
2623 barf("loadArchive: BSD-variant filename size not found while reading filename from `%s'", path);
2624 }
2625 }
2626 /* Check for GNU file index file */
2627 else if (0 == strncmp(fileName, "//", 2)) {
2628 fileName[0] = '\0';
2629 thisFileNameSize = 0;
2630 isGnuIndex = 1;
2631 }
2632 /* Check for a file in the GNU file index */
2633 else if (fileName[0] == '/') {
2634 if (isdigit(fileName[1])) {
2635 int i;
2636
2637 for (n = 2; isdigit(fileName[n]); n++);
2638 fileName[n] = '\0';
2639 n = atoi(fileName + 1);
2640
2641 if (gnuFileIndex == NULL) {
2642 barf("loadArchive: GNU-variant filename without an index while reading from `%s'", path);
2643 }
2644 if (n < 0 || n > gnuFileIndexSize) {
2645 barf("loadArchive: GNU-variant filename offset %d out of range [0..%d] while reading filename from `%s'", n, gnuFileIndexSize, path);
2646 }
2647 if (n != 0 && gnuFileIndex[n - 1] != '\n') {
2648 barf("loadArchive: GNU-variant filename offset %d invalid (range [0..%d]) while reading filename from `%s'", n, gnuFileIndexSize, path);
2649 }
2650 for (i = n; gnuFileIndex[i] != '\n'; i++);
2651 thisFileNameSize = i - n - 1;
2652 if (thisFileNameSize >= fileNameSize) {
2653 /* Double it to avoid potentially continually
2654 increasing it by 1 */
2655 fileNameSize = thisFileNameSize * 2;
2656 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2657 }
2658 memcpy(fileName, gnuFileIndex + n, thisFileNameSize);
2659 fileName[thisFileNameSize] = '\0';
2660 }
2661 else if (fileName[1] == ' ') {
2662 fileName[0] = '\0';
2663 thisFileNameSize = 0;
2664 }
2665 else {
2666 barf("loadArchive: GNU-variant filename offset not found while reading filename from `%s'", path);
2667 }
2668 }
2669 /* Finally, the case where the filename field actually contains
2670 the filename */
2671 else {
2672 /* GNU ar terminates filenames with a '/', this allowing
2673 spaces in filenames. So first look to see if there is a
2674 terminating '/'. */
2675 for (thisFileNameSize = 0;
2676 thisFileNameSize < 16;
2677 thisFileNameSize++) {
2678 if (fileName[thisFileNameSize] == '/') {
2679 fileName[thisFileNameSize] = '\0';
2680 break;
2681 }
2682 }
2683 /* If we didn't find a '/', then a space teminates the
2684 filename. Note that if we don't find one, then
2685 thisFileNameSize ends up as 16, and we already have the
2686 '\0' at the end. */
2687 if (thisFileNameSize == 16) {
2688 for (thisFileNameSize = 0;
2689 thisFileNameSize < 16;
2690 thisFileNameSize++) {
2691 if (fileName[thisFileNameSize] == ' ') {
2692 fileName[thisFileNameSize] = '\0';
2693 break;
2694 }
2695 }
2696 }
2697 }
2698
2699 IF_DEBUG(linker,
2700 debugBelch("loadArchive: Found member file `%s'\n", fileName));
2701
2702 isObject = thisFileNameSize >= 2
2703 && fileName[thisFileNameSize - 2] == '.'
2704 && fileName[thisFileNameSize - 1] == 'o';
2705
2706 IF_DEBUG(linker, debugBelch("loadArchive: \tthisFileNameSize = %d\n", (int)thisFileNameSize));
2707 IF_DEBUG(linker, debugBelch("loadArchive: \tisObject = %d\n", isObject));
2708
2709 if (isObject) {
2710 char *archiveMemberName;
2711
2712 IF_DEBUG(linker, debugBelch("loadArchive: Member is an object file...loading...\n"));
2713
2714 /* We can't mmap from the archive directly, as object
2715 files need to be 8-byte aligned but files in .ar
2716 archives are 2-byte aligned. When possible we use mmap
2717 to get some anonymous memory, as on 64-bit platforms if
2718 we use malloc then we can be given memory above 2^32.
2719 In the mmap case we're probably wasting lots of space;
2720 we could do better. */
2721 #if defined(USE_MMAP)
2722 image = mmapForLinker(memberSize, MAP_ANONYMOUS, -1);
2723 #elif defined(mingw32_HOST_OS)
2724 // TODO: We would like to use allocateExec here, but allocateExec
2725 // cannot currently allocate blocks large enough.
2726 image = allocateImageAndTrampolines(
2727 #if defined(x86_64_HOST_ARCH)
2728 f, path, fileName,
2729 #endif
2730 memberSize);
2731 #elif defined(darwin_HOST_OS)
2732 /* See loadObj() */
2733 misalignment = machoGetMisalignment(f);
2734 image = stgMallocBytes(memberSize + misalignment, "loadArchive(image)");
2735 image += misalignment;
2736 #else
2737 image = stgMallocBytes(memberSize, "loadArchive(image)");
2738 #endif
2739
2740 #if !defined(mingw32_HOST_OS)
2741 /*
2742 * Note [thin archives on Windows]
2743 * This doesn't compile on Windows because it assumes
2744 * char* pathnames, and we use wchar_t* on Windows. It's
2745 * not trivial to fix, so I'm leaving it disabled on
2746 * Windows for now --SDM
2747 */
2748 if (isThin) {
2749 FILE *member;
2750 char *pathCopy, *dirName, *memberPath;
2751
2752 /* Allocate and setup the dirname of the archive. We'll need
2753 this to locate the thin member */
2754 pathCopy = stgMallocBytes(strlen(path) + 1, "loadArchive(file)");
2755 strcpy(pathCopy, path);
2756 dirName = dirname(pathCopy);
2757
2758 /* Append the relative member name to the dirname. This should be
2759 be the full path to the actual thin member. */
2760 memberPath = stgMallocBytes(
2761 strlen(path) + 1 + strlen(fileName) + 1, "loadArchive(file)");
2762 strcpy(memberPath, dirName);
2763 memberPath[strlen(dirName)] = '/';
2764 strcpy(memberPath + strlen(dirName) + 1, fileName);
2765
2766 member = pathopen(memberPath, WSTR("rb"));
2767 if (!member)
2768 barf("loadObj: can't read `%s'", path);
2769
2770 n = fread ( image, 1, memberSize, member );
2771 if (n != memberSize) {
2772 barf("loadArchive: error whilst reading `%s'", fileName);
2773 }
2774
2775 fclose(member);
2776 stgFree(memberPath);
2777 stgFree(pathCopy);
2778 }
2779 else
2780 #endif
2781 {
2782 n = fread ( image, 1, memberSize, f );
2783 if (n != memberSize) {
2784 barf("loadArchive: error whilst reading `%s'", path);
2785 }
2786 }
2787
2788 archiveMemberName = stgMallocBytes(pathlen(path) + thisFileNameSize + 3,
2789 "loadArchive(file)");
2790 sprintf(archiveMemberName, "%" PATH_FMT "(%.*s)",
2791 path, (int)thisFileNameSize, fileName);
2792
2793 oc = mkOc(path, image, memberSize, archiveMemberName
2794 #ifndef USE_MMAP
2795 #ifdef darwin_HOST_OS
2796 , misalignment
2797 #endif
2798 #endif
2799 );
2800
2801 stgFree(archiveMemberName);
2802
2803 if (0 == loadOc(oc)) {
2804 stgFree(fileName);
2805 fclose(f);
2806 return 0;
2807 } else {
2808 oc->next = objects;
2809 objects = oc;
2810 }
2811 }
2812 else if (isGnuIndex) {
2813 if (gnuFileIndex != NULL) {
2814 barf("loadArchive: GNU-variant index found, but already have an index, while reading filename from `%s'", path);
2815 }
2816 IF_DEBUG(linker, debugBelch("loadArchive: Found GNU-variant file index\n"));
2817 #ifdef USE_MMAP
2818 gnuFileIndex = mmapForLinker(memberSize + 1, MAP_ANONYMOUS, -1);
2819 #else
2820 gnuFileIndex = stgMallocBytes(memberSize + 1, "loadArchive(image)");
2821 #endif
2822 n = fread ( gnuFileIndex, 1, memberSize, f );
2823 if (n != memberSize) {
2824 barf("loadArchive: error whilst reading `%s'", path);
2825 }
2826 gnuFileIndex[memberSize] = '/';
2827 gnuFileIndexSize = memberSize;
2828 }
2829 else {
2830 IF_DEBUG(linker, debugBelch("loadArchive: '%s' does not appear to be an object file\n", fileName));
2831 if (!isThin || thisFileNameSize == 0) {
2832 n = fseek(f, memberSize, SEEK_CUR);
2833 if (n != 0)
2834 barf("loadArchive: error whilst seeking by %d in `%s'",
2835 memberSize, path);
2836 }
2837 }
2838
2839 /* .ar files are 2-byte aligned */
2840 if (!(isThin && thisFileNameSize > 0) && memberSize % 2) {
2841 IF_DEBUG(linker, debugBelch("loadArchive: trying to read one pad byte\n"));
2842 n = fread ( tmp, 1, 1, f );
2843 if (n != 1) {
2844 if (feof(f)) {
2845 IF_DEBUG(linker, debugBelch("loadArchive: found EOF while reading one pad byte\n"));
2846 break;
2847 }
2848 else {
2849 barf("loadArchive: Failed reading padding from `%s'", path);
2850 }
2851 }
2852 IF_DEBUG(linker, debugBelch("loadArchive: successfully read one pad byte\n"));
2853 }
2854 IF_DEBUG(linker, debugBelch("loadArchive: reached end of archive loading while loop\n"));
2855 }
2856
2857 fclose(f);
2858
2859 stgFree(fileName);
2860 if (gnuFileIndex != NULL) {
2861 #ifdef USE_MMAP
2862 munmap(gnuFileIndex, gnuFileIndexSize + 1);
2863 #else
2864 stgFree(gnuFileIndex);
2865 #endif
2866 }
2867
2868 IF_DEBUG(linker, debugBelch("loadArchive: done\n"));
2869 return 1;
2870 }
2871
2872 /* -----------------------------------------------------------------------------
2873 * Load an obj (populate the global symbol table, but don't resolve yet)
2874 *
2875 * Returns: 1 if ok, 0 on error.
2876 */
2877 HsInt
2878 loadObj( pathchar *path )
2879 {
2880 ObjectCode* oc;
2881 char *image;
2882 int fileSize;
2883 struct_stat st;
2884 int r;
2885 #ifdef USE_MMAP
2886 int fd;
2887 #else
2888 FILE *f;
2889 # if defined(darwin_HOST_OS)
2890 int misalignment;
2891 # endif
2892 #endif
2893 IF_DEBUG(linker, debugBelch("loadObj %" PATH_FMT "\n", path));
2894
2895 initLinker();
2896
2897 /* debugBelch("loadObj %s\n", path ); */
2898
2899 /* Check that we haven't already loaded this object.
2900 Ignore requests to load multiple times */
2901
2902 if (isAlreadyLoaded(path)) {
2903 IF_DEBUG(linker,
2904 debugBelch("ignoring repeated load of %" PATH_FMT "\n", path));
2905 return 1; /* success */
2906 }
2907
2908 r = pathstat(path, &st);
2909 if (r == -1) {
2910 IF_DEBUG(linker, debugBelch("File doesn't exist\n"));
2911 return 0;
2912 }
2913
2914 fileSize = st.st_size;
2915
2916 #ifdef USE_MMAP
2917 /* On many architectures malloc'd memory isn't executable, so we need to use mmap. */
2918
2919 #if defined(openbsd_HOST_OS)
2920 /* coverity[toctou] */
2921 fd = open(path, O_RDONLY, S_IRUSR);
2922 #else
2923 /* coverity[toctou] */
2924 fd = open(path, O_RDONLY);
2925 #endif
2926 if (fd == -1) {
2927 errorBelch("loadObj: can't open `%s'", path);
2928 return 0;
2929 }
2930
2931 image = mmapForLinker(fileSize, 0, fd);
2932 close(fd);
2933 if (image == NULL) return 0;
2934
2935 #else /* !USE_MMAP */
2936 /* load the image into memory */
2937 /* coverity[toctou] */
2938 f = pathopen(path, WSTR("rb"));
2939 if (!f) {
2940 errorBelch("loadObj: can't read `%" PATH_FMT "'", path);
2941 return 0;
2942 }
2943
2944 # if defined(mingw32_HOST_OS)
2945 // TODO: We would like to use allocateExec here, but allocateExec
2946 // cannot currently allocate blocks large enough.
2947 image = allocateImageAndTrampolines(
2948 #if defined(x86_64_HOST_ARCH)
2949 f, path, "itself",
2950 #endif
2951 fileSize);
2952 if (image == NULL) {
2953 fclose(f);
2954 return 0;
2955 }
2956 # elif defined(darwin_HOST_OS)
2957 // In a Mach-O .o file, all sections can and will be misaligned
2958 // if the total size of the headers is not a multiple of the
2959 // desired alignment. This is fine for .o files that only serve
2960 // as input for the static linker, but it's not fine for us,
2961 // as SSE (used by gcc for floating point) and Altivec require
2962 // 16-byte alignment.
2963 // We calculate the correct alignment from the header before
2964 // reading the file, and then we misalign image on purpose so
2965 // that the actual sections end up aligned again.
2966 misalignment = machoGetMisalignment(f);
2967 image = stgMallocBytes(fileSize + misalignment, "loadObj(image)");
2968 image += misalignment;
2969 # else
2970 image = stgMallocBytes(fileSize, "loadObj(image)");
2971 # endif
2972
2973 {
2974 int n;
2975 n = fread ( image, 1, fileSize, f );
2976 fclose(f);
2977 if (n != fileSize) {
2978 errorBelch("loadObj: error whilst reading `%" PATH_FMT "'", path);
2979 stgFree(image);
2980 return 0;
2981 }
2982 }
2983 #endif /* USE_MMAP */
2984
2985 oc = mkOc(path, image, fileSize, NULL
2986 #ifndef USE_MMAP
2987 #ifdef darwin_HOST_OS
2988 , misalignment
2989 #endif
2990 #endif
2991 );
2992
2993 if (! loadOc(oc)) {
2994 // failed; free everything we've allocated
2995 removeOcSymbols(oc);
2996 freeObjectCode(oc);
2997 return 0;
2998 }
2999
3000 oc->next = objects;
3001 objects = oc;
3002 return 1;
3003 }
3004
3005 static HsInt
3006 loadOc( ObjectCode* oc ) {
3007 int r;
3008
3009 IF_DEBUG(linker, debugBelch("loadOc: start\n"));
3010
3011 /* verify the in-memory image */
3012 # if defined(OBJFORMAT_ELF)
3013 r = ocVerifyImage_ELF ( oc );
3014 # elif defined(OBJFORMAT_PEi386)
3015 r = ocVerifyImage_PEi386 ( oc );
3016 # elif defined(OBJFORMAT_MACHO)
3017 r = ocVerifyImage_MachO ( oc );
3018 # else
3019 barf("loadObj: no verify method");
3020 # endif
3021 if (!r) {
3022 IF_DEBUG(linker, debugBelch("loadOc: ocVerifyImage_* failed\n"));
3023 return r;
3024 }
3025
3026 # if defined(OBJFORMAT_MACHO) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH))
3027 r = ocAllocateSymbolExtras_MachO ( oc );
3028 if (!r) {
3029 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_MachO failed\n"));
3030 return r;
3031 }
3032 # elif defined(OBJFORMAT_ELF) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH))
3033 r = ocAllocateSymbolExtras_ELF ( oc );
3034 if (!r) {
3035 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_ELF failed\n"));
3036 return r;
3037 }
3038 # elif defined(OBJFORMAT_PEi386) && defined(x86_64_HOST_ARCH)
3039 ocAllocateSymbolExtras_PEi386 ( oc );
3040 #endif
3041
3042 /* build the symbol list for this image */
3043 # if defined(OBJFORMAT_ELF)
3044 r = ocGetNames_ELF ( oc );
3045 # elif defined(OBJFORMAT_PEi386)
3046 r = ocGetNames_PEi386 ( oc );
3047 # elif defined(OBJFORMAT_MACHO)
3048 r = ocGetNames_MachO ( oc );
3049 # else
3050 barf("loadObj: no getNames method");
3051 # endif
3052 if (!r) {
3053 IF_DEBUG(linker, debugBelch("loadOc: ocGetNames_* failed\n"));
3054 return r;
3055 }
3056
3057 /* loaded, but not resolved yet */
3058 oc->status = OBJECT_LOADED;
3059 IF_DEBUG(linker, debugBelch("loadOc: done.\n"));
3060
3061 return 1;
3062 }
3063
3064 /* -----------------------------------------------------------------------------
3065 * resolve all the currently unlinked objects in memory
3066 *
3067 * Returns: 1 if ok, 0 on error.
3068 */
3069 HsInt
3070 resolveObjs( void )
3071 {
3072 ObjectCode *oc;
3073 int r;
3074
3075 IF_DEBUG(linker, debugBelch("resolveObjs: start\n"));
3076 initLinker();
3077
3078 for (oc = objects; oc; oc = oc->next) {
3079 if (oc->status != OBJECT_RESOLVED) {
3080 # if defined(OBJFORMAT_ELF)
3081 r = ocResolve_ELF ( oc );
3082 # elif defined(OBJFORMAT_PEi386)
3083 r = ocResolve_PEi386 ( oc );
3084 # elif defined(OBJFORMAT_MACHO)
3085 r = ocResolve_MachO ( oc );
3086 # else
3087 barf("resolveObjs: not implemented on this platform");
3088 # endif
3089 if (!r) { return r; }
3090
3091 // run init/init_array/ctors/mod_init_func
3092
3093 loading_obj = oc; // tells foreignExportStablePtr what to do
3094 #if defined(OBJFORMAT_ELF)
3095 r = ocRunInit_ELF ( oc );
3096 #elif defined(OBJFORMAT_PEi386)
3097 r = ocRunInit_PEi386 ( oc );
3098 #elif defined(OBJFORMAT_MACHO)
3099 r = ocRunInit_MachO ( oc );
3100 #else
3101 barf("resolveObjs: initializers not implemented on this platform");
3102 #endif
3103 loading_obj = NULL;
3104
3105 if (!r) { return r; }
3106
3107 oc->status = OBJECT_RESOLVED;
3108 }
3109 }
3110 IF_DEBUG(linker, debugBelch("resolveObjs: done\n"));
3111 return 1;
3112 }
3113
3114 /* -----------------------------------------------------------------------------
3115 * delete an object from the pool
3116 */
3117 HsInt
3118 unloadObj( pathchar *path )
3119 {
3120 ObjectCode *oc, *prev, *next;
3121 HsBool unloadedAnyObj = HS_BOOL_FALSE;
3122
3123 ASSERT(symhash != NULL);
3124 ASSERT(objects != NULL);
3125
3126 initLinker();
3127
3128 IF_DEBUG(linker, debugBelch("unloadObj: %" PATH_FMT "\n", path));
3129
3130 prev = NULL;
3131 for (oc = objects; oc; oc = next) {
3132 next = oc->next; // oc might be freed
3133
3134 if (!pathcmp(oc->fileName,path)) {
3135
3136 removeOcSymbols(oc);
3137
3138 if (prev == NULL) {
3139 objects = oc->next;
3140 } else {
3141 prev->next = oc->next;
3142 }
3143 oc->next = unloaded_objects;
3144 unloaded_objects = oc;
3145
3146 // Release any StablePtrs that were created when this
3147 // object module was initialized.
3148 {
3149 ForeignExportStablePtr *fe_ptr, *next;
3150
3151 for (fe_ptr = oc->stable_ptrs; fe_ptr != NULL; fe_ptr = next) {
3152 next = fe_ptr->next;
3153 freeStablePtr(fe_ptr->stable_ptr);
3154 stgFree(fe_ptr);
3155 }
3156 }
3157
3158 oc->status = OBJECT_UNLOADED;
3159
3160 /* This could be a member of an archive so continue
3161 * unloading other members. */
3162 unloadedAnyObj = HS_BOOL_TRUE;
3163 } else {
3164 prev = oc;
3165 }
3166 }
3167
3168 if (unloadedAnyObj) {
3169 return 1;
3170 }
3171 else {
3172 errorBelch("unloadObj: can't find `%" PATH_FMT "' to unload", path);
3173 return 0;
3174 }
3175 }
3176
3177 /* -----------------------------------------------------------------------------
3178 * Sanity checking. For each ObjectCode, maintain a list of address ranges
3179 * which may be prodded during relocation, and abort if we try and write
3180 * outside any of these.
3181 */
3182 static void
3183 addProddableBlock ( ObjectCode* oc, void* start, int size )
3184 {
3185 ProddableBlock* pb
3186 = stgMallocBytes(sizeof(ProddableBlock), "addProddableBlock");
3187
3188 IF_DEBUG(linker, debugBelch("addProddableBlock: %p %p %d\n", oc, start, size));
3189 ASSERT(size > 0);
3190 pb->start = start;
3191 pb->size = size;
3192 pb->next = oc->proddables;
3193 oc->proddables = pb;
3194 }
3195
3196 static void
3197 checkProddableBlock (ObjectCode *oc, void *addr, size_t size )
3198 {
3199 ProddableBlock* pb;
3200
3201 for (pb = oc->proddables; pb != NULL; pb = pb->next) {
3202 char* s = (char*)(pb->start);
3203 char* e = s + pb->size;
3204 char* a = (char*)addr;
3205 if (a >= s && (a+size) <= e) return;
3206 }
3207 barf("checkProddableBlock: invalid fixup in runtime linker: %p", addr);
3208 }
3209
3210 static void freeProddableBlocks (ObjectCode *oc)
3211 {
3212 ProddableBlock *pb, *next;
3213
3214 for (pb = oc->proddables; pb != NULL; pb = next) {
3215 next = pb->next;
3216 stgFree(pb);
3217 }
3218 oc->proddables = NULL;
3219 }
3220
3221 /* -----------------------------------------------------------------------------
3222 * Section management.
3223 */
3224 static void
3225 addSection ( ObjectCode* oc, SectionKind kind,
3226 void* start, void* end )
3227 {
3228 Section* s = stgMallocBytes(sizeof(Section), "addSection");
3229 s->start = start;
3230 s->end = end;
3231 s->kind = kind;
3232 s->next = oc->sections;
3233 oc->sections = s;
3234
3235 IF_DEBUG(linker, debugBelch("addSection: %p-%p (size %lld), kind %d\n",
3236 start, ((char*)end)-1, ((long long)(size_t)end) - ((long long)(size_t)start) + 1, kind ));
3237 }
3238
3239
3240 /* --------------------------------------------------------------------------
3241 * Symbol Extras.
3242 * This is about allocating a small chunk of memory for every symbol in the
3243 * object file. We make sure that the SymboLExtras are always "in range" of
3244 * limited-range PC-relative instructions on various platforms by allocating
3245 * them right next to the object code itself.
3246 */
3247
3248 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3249 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3250
3251 /*
3252 ocAllocateSymbolExtras
3253
3254 Allocate additional space at the end of the object file image to make room
3255 for jump islands (powerpc, x86_64, arm) and GOT entries (x86_64).
3256
3257 PowerPC relative branch instructions have a 24 bit displacement field.
3258 As PPC code is always 4-byte-aligned, this yields a +-32MB range.
3259 If a particular imported symbol is outside this range, we have to redirect
3260 the jump to a short piece of new code that just loads the 32bit absolute
3261 address and jumps there.
3262 On x86_64, PC-relative jumps and PC-relative accesses to the GOT are limited
3263 to 32 bits (+-2GB).
3264
3265 This function just allocates space for one SymbolExtra for every
3266 undefined symbol in the object file. The code for the jump islands is
3267 filled in by makeSymbolExtra below.
3268 */
3269
3270 static int ocAllocateSymbolExtras( ObjectCode* oc, int count, int first )
3271 {
3272 #ifdef USE_MMAP
3273 int pagesize, n, m;
3274 #endif
3275 int aligned;
3276 #ifndef USE_MMAP
3277 int misalignment = 0;
3278 #ifdef darwin_HOST_OS
3279 misalignment = oc->misalignment;
3280 #endif
3281 #endif
3282
3283 if( count > 0 )
3284 {
3285 // round up to the nearest 4
3286 aligned = (oc->fileSize + 3) & ~3;
3287
3288 #ifdef USE_MMAP
3289 pagesize = getpagesize();
3290 n = ROUND_UP( oc->fileSize, pagesize );
3291 m = ROUND_UP( aligned + sizeof (SymbolExtra) * count, pagesize );
3292
3293 /* we try to use spare space at the end of the last page of the
3294 * image for the jump islands, but if there isn't enough space
3295 * then we have to map some (anonymously, remembering MAP_32BIT).
3296 */
3297 if( m > n ) // we need to allocate more pages
3298 {
3299 if (USE_CONTIGUOUS_MMAP)
3300 {
3301 /* Keep image and symbol_extras contiguous */
3302 void *new = mmapForLinker(n + (sizeof(SymbolExtra) * count),
3303 MAP_ANONYMOUS, -1);
3304 if (new)
3305 {
3306 memcpy(new, oc->image, oc->fileSize);
3307 munmap(oc->image, n);
3308 oc->image = new;
3309 oc->fileSize = n + (sizeof(SymbolExtra) * count);
3310 oc->symbol_extras = (SymbolExtra *) (oc->image + n);
3311 }
3312 else {
3313 oc->symbol_extras = NULL;
3314 return 0;
3315 }
3316 }
3317 else
3318 {
3319 oc->symbol_extras = mmapForLinker(sizeof(SymbolExtra) * count,
3320 MAP_ANONYMOUS, -1);
3321 if (oc->symbol_extras == NULL) return 0;
3322 }
3323 }
3324 else
3325 {
3326 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3327 }
3328 #else
3329 oc->image -= misalignment;
3330 oc->image = stgReallocBytes( oc->image,
3331 misalignment +
3332 aligned + sizeof (SymbolExtra) * count,
3333 "ocAllocateSymbolExtras" );
3334 oc->image += misalignment;
3335
3336 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3337 #endif /* USE_MMAP */
3338
3339 memset( oc->symbol_extras, 0, sizeof (SymbolExtra) * count );
3340 }
3341 else
3342 oc->symbol_extras = NULL;
3343
3344 oc->first_symbol_extra = first;
3345 oc->n_symbol_extras = count;
3346
3347 return 1;
3348 }
3349
3350 #endif
3351 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3352
3353 #if defined(arm_HOST_ARCH)
3354
3355 static void
3356 ocFlushInstructionCache( ObjectCode *oc )
3357 {
3358 // Object code
3359 __clear_cache(oc->image, oc->image + oc->fileSize);
3360 // Jump islands
3361 __clear_cache(oc->symbol_extras, &oc->symbol_extras[oc->n_symbol_extras]);
3362 }
3363
3364 #endif
3365
3366 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3367 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3368
3369 static SymbolExtra* makeSymbolExtra( ObjectCode* oc,
3370 unsigned long symbolNumber,
3371 unsigned long target )
3372 {
3373 SymbolExtra *extra;
3374
3375 ASSERT( symbolNumber >= oc->first_symbol_extra
3376 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3377
3378 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3379
3380 #ifdef powerpc_HOST_ARCH
3381 // lis r12, hi16(target)
3382 extra->jumpIsland.lis_r12 = 0x3d80;
3383 extra->jumpIsland.hi_addr = target >> 16;
3384
3385 // ori r12, r12, lo16(target)
3386 extra->jumpIsland.ori_r12_r12 = 0x618c;
3387 extra->jumpIsland.lo_addr = target & 0xffff;
3388
3389 // mtctr r12
3390 extra->jumpIsland.mtctr_r12 = 0x7d8903a6;
3391
3392 // bctr
3393 extra->jumpIsland.bctr = 0x4e800420;
3394 #endif
3395 #ifdef x86_64_HOST_ARCH
3396 // jmp *-14(%rip)
3397 static uint8_t jmp[] = { 0xFF, 0x25, 0xF2, 0xFF, 0xFF, 0xFF };
3398 extra->addr = target;
3399 memcpy(extra->jumpIsland, jmp, 6);
3400 #endif
3401
3402 return extra;
3403 }
3404
3405 #endif
3406 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3407
3408 #ifdef arm_HOST_ARCH
3409 static SymbolExtra* makeArmSymbolExtra( ObjectCode* oc,
3410 unsigned long symbolNumber,
3411 unsigned long target,
3412 int fromThumb,
3413 int toThumb )
3414 {
3415 SymbolExtra *extra;
3416
3417 ASSERT( symbolNumber >= oc->first_symbol_extra
3418 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3419
3420 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3421
3422 // Make sure instruction mode bit is set properly
3423 if (toThumb)
3424 target |= 1;
3425 else
3426 target &= ~1;
3427
3428 if (!fromThumb) {
3429 // In ARM encoding:
3430 // movw r12, #0
3431 // movt r12, #0
3432 // bx r12
3433 uint32_t code[] = { 0xe300c000, 0xe340c000, 0xe12fff1c };
3434
3435 // Patch lower half-word into movw
3436 code[0] |= ((target>>12) & 0xf) << 16;
3437 code[0] |= target & 0xfff;
3438 // Patch upper half-word into movt
3439 target >>= 16;
3440 code[1] |= ((target>>12) & 0xf) << 16;
3441 code[1] |= target & 0xfff;
3442
3443 memcpy(extra->jumpIsland, code, 12);
3444
3445 } else {
3446 // In Thumb encoding:
3447 // movw r12, #0
3448 // movt r12, #0
3449 // bx r12
3450 uint16_t code[] = { 0xf240, 0x0c00,
3451 0xf2c0, 0x0c00,
3452 0x4760 };
3453
3454 // Patch lower half-word into movw
3455 code[0] |= (target>>12) & 0xf;
3456 code[0] |= ((target>>11) & 0x1) << 10;
3457 code[1] |= ((target>>8) & 0x7) << 12;
3458 code[1] |= target & 0xff;
3459 // Patch upper half-word into movt
3460 target >>= 16;
3461 code[2] |= (target>>12) & 0xf;
3462 code[2] |= ((target>>11) & 0x1) << 10;
3463 code[3] |= ((target>>8) & 0x7) << 12;
3464 code[3] |= target & 0xff;
3465
3466 memcpy(extra->jumpIsland, code, 10);
3467 }
3468
3469 return extra;
3470 }
3471 #endif // arm_HOST_ARCH
3472
3473 /* --------------------------------------------------------------------------
3474 * PowerPC specifics (instruction cache flushing)
3475 * ------------------------------------------------------------------------*/
3476
3477 #ifdef powerpc_HOST_ARCH
3478 /*
3479 ocFlushInstructionCache
3480
3481 Flush the data & instruction caches.
3482 Because the PPC has split data/instruction caches, we have to
3483 do that whenever we modify code at runtime.
3484 */
3485
3486 static void
3487 ocFlushInstructionCacheFrom(void* begin, size_t length)
3488 {
3489 size_t n = (length + 3) / 4;
3490 unsigned long* p = begin;
3491
3492 while (n--)
3493 {
3494 __asm__ volatile ( "dcbf 0,%0\n\t"
3495 "sync\n\t"
3496 "icbi 0,%0"
3497 :
3498 : "r" (p)
3499 );
3500 p++;
3501 }
3502 __asm__ volatile ( "sync\n\t"
3503 "isync"
3504 );
3505 }
3506
3507 static void
3508 ocFlushInstructionCache( ObjectCode *oc )
3509 {
3510 /* The main object code */
3511 ocFlushInstructionCacheFrom(oc->image
3512 #ifdef darwin_HOST_OS
3513 + oc->misalignment
3514 #endif
3515 , oc->fileSize);
3516
3517 /* Jump Islands */
3518 ocFlushInstructionCacheFrom(oc->symbol_extras, sizeof(SymbolExtra) * oc->n_symbol_extras);
3519 }
3520 #endif /* powerpc_HOST_ARCH */
3521
3522
3523 /* --------------------------------------------------------------------------
3524 * PEi386 specifics (Win32 targets)
3525 * ------------------------------------------------------------------------*/
3526
3527 /* The information for this linker comes from
3528 Microsoft Portable Executable
3529 and Common Object File Format Specification
3530 revision 5.1 January 1998
3531 which SimonM says comes from the MS Developer Network CDs.
3532
3533 It can be found there (on older CDs), but can also be found
3534 online at:
3535
3536 http://www.microsoft.com/hwdev/hardware/PECOFF.asp
3537
3538 (this is Rev 6.0 from February 1999).
3539
3540 Things move, so if that fails, try searching for it via
3541
3542 http://www.google.com/search?q=PE+COFF+specification
3543
3544 The ultimate reference for the PE format is the Winnt.h
3545 header file that comes with the Platform SDKs; as always,
3546 implementations will drift wrt their documentation.
3547
3548 A good background article on the PE format is Matt Pietrek's
3549 March 1994 article in Microsoft System Journal (MSJ)
3550 (Vol.9, No. 3): "Peering Inside the PE: A Tour of the
3551 Win32 Portable Executable File Format." The info in there
3552 has recently been updated in a two part article in
3553 MSDN magazine, issues Feb and March 2002,
3554 "Inside Windows: An In-Depth Look into the Win32 Portable
3555 Executable File Format"
3556
3557 John Levine's book "Linkers and Loaders" contains useful
3558 info on PE too.
3559 */
3560
3561
3562 #if defined(OBJFORMAT_PEi386)
3563
3564
3565
3566 typedef unsigned char UChar;
3567 typedef unsigned short UInt16;
3568 typedef unsigned int UInt32;
3569 typedef int Int32;
3570 typedef unsigned long long int UInt64;
3571
3572
3573 typedef
3574 struct {
3575 UInt16 Machine;
3576 UInt16 NumberOfSections;
3577 UInt32 TimeDateStamp;
3578 UInt32 PointerToSymbolTable;
3579 UInt32 NumberOfSymbols;
3580 UInt16 SizeOfOptionalHeader;
3581 UInt16 Characteristics;
3582 }
3583 COFF_header;
3584
3585 #define sizeof_COFF_header 20
3586
3587
3588 typedef
3589 struct {
3590 UChar Name[8];
3591 UInt32 VirtualSize;
3592 UInt32 VirtualAddress;
3593 UInt32 SizeOfRawData;
3594 UInt32 PointerToRawData;
3595 UInt32 PointerToRelocations;
3596 UInt32 PointerToLinenumbers;
3597 UInt16 NumberOfRelocations;
3598 UInt16 NumberOfLineNumbers;
3599 UInt32 Characteristics;
3600 }
3601 COFF_section;
3602
3603 #define sizeof_COFF_section 40
3604
3605
3606 typedef
3607 struct {
3608 UChar Name[8];
3609 UInt32 Value;
3610 UInt16 SectionNumber;
3611 UInt16 Type;
3612 UChar StorageClass;
3613 UChar NumberOfAuxSymbols;
3614 }
3615 COFF_symbol;
3616
3617 #define sizeof_COFF_symbol 18
3618
3619
3620 typedef
3621 struct {
3622 UInt32 VirtualAddress;
3623 UInt32 SymbolTableIndex;
3624 UInt16 Type;
3625 }
3626 COFF_reloc;
3627
3628 #define sizeof_COFF_reloc 10
3629
3630
3631 /* From PE spec doc, section 3.3.2 */
3632 /* Note use of MYIMAGE_* since IMAGE_* are already defined in
3633 windows.h -- for the same purpose, but I want to know what I'm
3634 getting, here. */
3635 #define MYIMAGE_FILE_RELOCS_STRIPPED 0x0001
3636 #define MYIMAGE_FILE_EXECUTABLE_IMAGE 0x0002
3637 #define MYIMAGE_FILE_DLL 0x2000
3638 #define MYIMAGE_FILE_SYSTEM 0x1000
3639 #define MYIMAGE_FILE_BYTES_REVERSED_HI 0x8000
3640 #define MYIMAGE_FILE_BYTES_REVERSED_LO 0x0080
3641 #define MYIMAGE_FILE_32BIT_MACHINE 0x0100
3642
3643 /* From PE spec doc, section 5.4.2 and 5.4.4 */
3644 #define MYIMAGE_SYM_CLASS_EXTERNAL 2
3645 #define MYIMAGE_SYM_CLASS_STATIC 3
3646 #define MYIMAGE_SYM_UNDEFINED 0
3647
3648 /* From PE spec doc, section 4.1 */
3649 #define MYIMAGE_SCN_CNT_CODE 0x00000020
3650 #define MYIMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
3651 #define MYIMAGE_SCN_LNK_NRELOC_OVFL 0x01000000
3652
3653 /* From PE spec doc, section 5.2.1 */
3654 #define MYIMAGE_REL_I386_DIR32 0x0006
3655 #define MYIMAGE_REL_I386_REL32 0x0014
3656
3657 static int verifyCOFFHeader ( COFF_header *hdr, pathchar *filename);
3658
3659 /* We assume file pointer is right at the
3660 beginning of COFF object.
3661 */
3662 static char *
3663 allocateImageAndTrampolines (
3664 #if defined(x86_64_HOST_ARCH)
3665 FILE* f, pathchar* arch_name, char* member_name,
3666 #endif
3667 int size )
3668 {
3669 char* image;
3670 #if defined(x86_64_HOST_ARCH)
3671 /* PeCoff contains number of symbols right in it's header, so
3672 we can reserve the room for symbolExtras right here. */
3673 COFF_header hdr;
3674 size_t n;
3675
3676 n = fread ( &hdr, 1, sizeof_COFF_header, f );
3677 if (n != sizeof( COFF_header )) {
3678 errorBelch("getNumberOfSymbols: error whilst reading `%s' header in `%S'",
3679 member_name, arch_name);
3680 return NULL;
3681 }
3682 fseek( f, -sizeof_COFF_header, SEEK_CUR );
3683
3684 if (!verifyCOFFHeader(&hdr, arch_name)) {
3685 return 0;
3686 }
3687
3688 /* We get back 8-byte aligned memory (is that guaranteed?), but
3689 the offsets to the sections within the file are all 4 mod 8
3690 (is that guaranteed?). We therefore need to offset the image
3691 by 4, so that all the pointers are 8-byte aligned, so that
3692 pointer tagging works. */
3693 /* For 32-bit case we don't need this, hence we use macro PEi386_IMAGE_OFFSET,
3694 which equals to 4 for 64-bit case and 0 for 32-bit case. */
3695 /* We allocate trampolines area for all symbols right behind
3696 image data, aligned on 8. */
3697 size = ((PEi386_IMAGE_OFFSET + size + 0x7) & ~0x7)
3698 + hdr.NumberOfSymbols * sizeof(SymbolExtra);
3699 #endif
3700 image = VirtualAlloc(NULL, size,
3701 MEM_RESERVE | MEM_COMMIT,
3702 PAGE_EXECUTE_READWRITE);
3703
3704 if (image == NULL) {
3705 errorBelch("%" PATH_FMT ": failed to allocate memory for image",
3706 arch_name);
3707 return NULL;
3708 }
3709
3710 return image + PEi386_IMAGE_OFFSET;
3711 }
3712
3713 /* We use myindex to calculate array addresses, rather than
3714 simply doing the normal subscript thing. That's because
3715 some of the above structs have sizes which are not
3716 a whole number of words. GCC rounds their sizes up to a
3717 whole number of words, which means that the address calcs
3718 arising from using normal C indexing or pointer arithmetic
3719 are just plain wrong. Sigh.
3720 */
3721 static UChar *
3722 myindex ( int scale, void* base, int index )
3723 {
3724 return
3725 ((UChar*)base) + scale * index;
3726 }
3727
3728
3729 static void
3730 printName ( UChar* name, UChar* strtab )
3731 {
3732 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3733 UInt32 strtab_offset = * (UInt32*)(name+4);
3734 debugBelch("%s", strtab + strtab_offset );
3735 } else {
3736 int i;
3737 for (i = 0; i < 8; i++) {
3738 if (name[i] == 0) break;
3739 debugBelch("%c", name[i] );
3740 }
3741 }
3742 }
3743
3744
3745 static void
3746 copyName ( UChar* name, UChar* strtab, UChar* dst, int dstSize )
3747 {
3748 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3749 UInt32 strtab_offset = * (UInt32*)(name+4);
3750 strncpy ( (char*)dst, (char*)strtab+strtab_offset, dstSize );
3751 dst[dstSize-1] = 0;
3752 } else {
3753 int i = 0;
3754 while (1) {
3755 if (i >= 8) break;
3756 if (name[i] == 0) break;
3757 dst[i] = name[i];
3758 i++;
3759 }
3760 dst[i] = 0;
3761 }
3762 }
3763
3764
3765 static UChar *
3766 cstring_from_COFF_symbol_name ( UChar* name, UChar* strtab )
3767 {
3768 UChar* newstr;
3769 /* If the string is longer than 8 bytes, look in the
3770 string table for it -- this will be correctly zero terminated.
3771 */
3772 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3773 UInt32 strtab_offset = * (UInt32*)(name+4);
3774 return ((UChar*)strtab) + strtab_offset;
3775 }
3776 /* Otherwise, if shorter than 8 bytes, return the original,
3777 which by defn is correctly terminated.
3778 */
3779 if (name[7]==0) return name;
3780 /* The annoying case: 8 bytes. Copy into a temporary
3781 (XXX which is never freed ...)
3782 */
3783 newstr = stgMallocBytes(9, "cstring_from_COFF_symbol_name");
3784 ASSERT(newstr);
3785 strncpy((char*)newstr,(char*)name,8);
3786 newstr[8] = 0;
3787 return newstr;
3788 }
3789
3790 /* Getting the name of a section is mildly tricky, so we make a
3791 function for it. Sadly, in one case we have to copy the string
3792 (when it is exactly 8 bytes long there's no trailing '\0'), so for
3793 consistency we *always* copy the string; the caller must free it
3794 */
3795 static char *
3796 cstring_from_section_name (UChar* name, UChar* strtab)
3797 {
3798 char *newstr;
3799
3800 if (name[0]=='/') {
3801 int strtab_offset = strtol((char*)name+1,NULL,10);
3802 int len = strlen(((char*)strtab) + strtab_offset);
3803
3804 newstr = stgMallocBytes(len+1, "cstring_from_section_symbol_name");
3805 strcpy((char*)newstr, (char*)((UChar*)strtab) + strtab_offset);
3806 return newstr;
3807 }
3808 else
3809 {
3810 newstr = stgMallocBytes(9, "cstring_from_section_symbol_name");
3811 ASSERT(newstr);
3812 strncpy((char*)newstr,(char*)name,8);
3813 newstr[8] = 0;
3814 return newstr;
3815 }
3816 }
3817
3818 /* Just compares the short names (first 8 chars) */
3819 static COFF_section *
3820 findPEi386SectionCalled ( ObjectCode* oc, UChar* name, UChar* strtab )
3821 {
3822 int i;
3823 rtsBool long_name = rtsFalse;
3824 COFF_header* hdr
3825 = (COFF_header*)(oc->image);
3826 COFF_section* sectab
3827 = (COFF_section*) (
3828 ((UChar*)(oc->image))
3829 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3830 );
3831 // String is longer than 8 bytes, swap in the proper
3832 // (NULL-terminated) version, and make a note that this
3833 // is a long name.
3834 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3835 UInt32 strtab_offset = * (UInt32*)(name+4);
3836 name = ((UChar*)strtab) + strtab_offset;
3837 long_name = rtsTrue;
3838 }
3839 for (i = 0; i < hdr->NumberOfSections; i++) {
3840 UChar* n1;
3841 UChar* n2;
3842 COFF_section* section_i
3843 = (COFF_section*)
3844 myindex ( sizeof_COFF_section, sectab, i );
3845 n1 = (UChar*) &(section_i->Name);
3846 n2 = name;
3847 // Long section names are prefixed with a slash, see
3848 // also cstring_from_section_name
3849 if (n1[0] == '/' && long_name) {
3850 // Long name check
3851 // We don't really want to make an assumption that the string
3852 // table indexes are the same, so we'll do a proper check.
3853 int n1_strtab_offset = strtol((char*)n1+1,NULL,10);
3854 n1 = (UChar*) (((char*)strtab) + n1_strtab_offset);
3855 if (0==strcmp((const char*)n1, (const char*)n2)) {
3856 return section_i;
3857 }
3858 } else if (n1[0] != '/' && !long_name) {
3859 // Short name check
3860 if (n1[0]==n2[0] && n1[1]==n2[1] && n1[2]==n2[2] &&
3861 n1[3]==n2[3] && n1[4]==n2[4] && n1[5]==n2[5] &&
3862 n1[6]==n2[6] && n1[7]==n2[7]) {
3863 return section_i;
3864 }
3865 } else {
3866 // guaranteed to mismatch, because we never attempt to link
3867 // in an executable where the section name may be truncated
3868 }
3869 }
3870
3871 return NULL;
3872 }
3873
3874 static void
3875 zapTrailingAtSign ( UChar* sym )
3876 {
3877 # define my_isdigit(c) ((c) >= '0' && (c) <= '9')
3878 int i, j;
3879 if (sym[0] == 0) return;
3880 i = 0;
3881 while (sym[i] != 0) i++;
3882 i--;
3883 j = i;
3884 while (j > 0 && my_isdigit(sym[j])) j--;
3885 if (j > 0 && sym[j] == '@' && j != i) sym[j] = 0;
3886 # undef my_isdigit
3887 }
3888
3889 static void *
3890 lookupSymbolInDLLs ( UChar *lbl )
3891 {
3892 OpenedDLL* o_dll;
3893 void *sym;
3894
3895 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
3896 /* debugBelch("look in %s for %s\n", o_dll->name, lbl); */
3897
3898 if (lbl[0] == '_') {
3899 /* HACK: if the name has an initial underscore, try stripping
3900 it off & look that up first. I've yet to verify whether there's
3901 a Rule that governs whether an initial '_' *should always* be
3902 stripped off when mapping from import lib name to the DLL name.
3903 */
3904 sym = GetProcAddress(o_dll->instance, (char*)(lbl+1));
3905 if (sym != NULL) {
3906 /*debugBelch("found %s in %s\n", lbl+1,o_dll->name);*/
3907 return sym;
3908 }
3909 }
3910
3911 /* Ticket #2283.
3912 Long description: http://support.microsoft.com/kb/132044
3913 tl;dr:
3914 If C/C++ compiler sees __declspec(dllimport) ... foo ...
3915 it generates call *__imp_foo, and __imp_foo here has exactly
3916 the same semantics as in __imp_foo = GetProcAddress(..., "foo")
3917 */
3918 if (sym == NULL && strncmp ((const char*)lbl, "__imp_", 6) == 0) {
3919 sym = GetProcAddress(o_dll->instance, (char*)(lbl+6));
3920 if (sym != NULL) {
3921 IndirectAddr* ret;
3922 ret = stgMallocBytes( sizeof(IndirectAddr), "lookupSymbolInDLLs" );
3923 ret->addr = sym;
3924 ret->next = indirects;
3925 indirects = ret;
3926 errorBelch("warning: %s from %S is linked instead of %s",
3927 (char*)(lbl+6), o_dll->name, (char*)lbl);
3928 return (void*) & ret->addr;
3929 }
3930 }
3931
3932 sym = GetProcAddress(o_dll->instance, (char*)lbl);
3933 if (sym != NULL) {
3934 /*debugBelch("found %s in %s\n", lbl,o_dll->name);*/
3935 return sym;
3936 }
3937 }
3938 return NULL;
3939 }
3940
3941 static int
3942 verifyCOFFHeader (COFF_header *hdr, pathchar *fileName)
3943 {
3944 #if defined(i386_HOST_ARCH)
3945 if (hdr->Machine != 0x14c) {
3946 errorBelch("%" PATH_FMT ": Not x86 PEi386", fileName);
3947 return 0;
3948 }
3949 #elif defined(x86_64_HOST_ARCH)
3950 if (hdr->Machine != 0x8664) {
3951 errorBelch("%" PATH_FMT ": Not x86_64 PEi386", fileName);
3952 return 0;
3953 }
3954 #else
3955 errorBelch("PEi386 not supported on this arch");
3956 #endif
3957
3958 if (hdr->SizeOfOptionalHeader != 0) {
3959 errorBelch("%" PATH_FMT ": PEi386 with nonempty optional header",
3960 fileName);
3961 return 0;
3962 }
3963 if ( /* (hdr->Characteristics & MYIMAGE_FILE_RELOCS_STRIPPED) || */
3964 (hdr->Characteristics & MYIMAGE_FILE_EXECUTABLE_IMAGE) ||
3965 (hdr->Characteristics & MYIMAGE_FILE_DLL) ||
3966 (hdr->Characteristics & MYIMAGE_FILE_SYSTEM) ) {
3967 errorBelch("%" PATH_FMT ": Not a PEi386 object file", fileName);
3968 return 0;
3969 }
3970 if ( (hdr->Characteristics & MYIMAGE_FILE_BYTES_REVERSED_HI)
3971 /* || !(hdr->Characteristics & MYIMAGE_FILE_32BIT_MACHINE) */ ) {
3972 errorBelch("%" PATH_FMT ": Invalid PEi386 word size or endiannness: %d",
3973 fileName,
3974 (int)(hdr->Characteristics));
3975 return 0;
3976 }
3977 return 1;
3978 }
3979
3980 static int
3981 ocVerifyImage_PEi386 ( ObjectCode* oc )
3982 {
3983 int i;
3984 UInt32 j, noRelocs;
3985 COFF_header* hdr;
3986 COFF_section* sectab;
3987 COFF_symbol* symtab;
3988 UChar* strtab;
3989 /* debugBelch("\nLOADING %s\n", oc->fileName); */
3990 hdr = (COFF_header*)(oc->image);
3991 sectab = (COFF_section*) (
3992 ((UChar*)(oc->image))
3993 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3994 );
3995 symtab = (COFF_symbol*) (
3996 ((UChar*)(oc->image))
3997 + hdr->PointerToSymbolTable
3998 );
3999 strtab = ((UChar*)symtab)
4000 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
4001
4002 if (!verifyCOFFHeader(hdr, oc->fileName)) {
4003 return 0;
4004 }
4005
4006 /* If the string table size is way crazy, this might indicate that
4007 there are more than 64k relocations, despite claims to the
4008 contrary. Hence this test. */
4009 /* debugBelch("strtab size %d\n", * (UInt32*)strtab); */
4010 #if 0
4011 if ( (*(UInt32*)strtab) > 600000 ) {
4012 /* Note that 600k has no special significance other than being
4013 big enough to handle the almost-2MB-sized lumps that
4014 constitute HSwin32*.o. */
4015 debugBelch("PEi386 object has suspiciously large string table; > 64k relocs?");
4016 return 0;
4017 }
4018 #endif
4019
4020 /* No further verification after this point; only debug printing. */
4021 i = 0;
4022 IF_DEBUG(linker, i=1);
4023 if (i == 0) return 1;
4024
4025 debugBelch( "sectab offset = %" FMT_Int "\n", ((UChar*)sectab) - ((UChar*)hdr) );
4026 debugBelch( "symtab offset = %" FMT_Int "\n", ((UChar*)symtab) - ((UChar*)hdr) );
4027 debugBelch( "strtab offset = %" FMT_Int "\n", ((UChar*)strtab) - ((UChar*)hdr) );
4028
4029 debugBelch("\n" );
4030 debugBelch( "Machine: 0x%x\n", (UInt32)(hdr->Machine) );
4031 debugBelch( "# sections: %d\n", (UInt32)(hdr->NumberOfSections) );
4032 debugBelch( "time/date: 0x%x\n", (UInt32)(hdr->TimeDateStamp) );
4033 debugBelch( "symtab offset: %d\n", (UInt32)(hdr->PointerToSymbolTable) );
4034 debugBelch( "# symbols: %d\n", (UInt32)(hdr->NumberOfSymbols) );
4035 debugBelch( "sz of opt hdr: %d\n", (UInt32)(hdr->SizeOfOptionalHeader) );
4036 debugBelch( "characteristics: 0x%x\n", (UInt32)(hdr->Characteristics) );
4037
4038 /* Print the section table. */
4039 debugBelch("\n" );
4040 for (i = 0; i < hdr->NumberOfSections; i++) {
4041 COFF_reloc* reltab;
4042 COFF_section* sectab_i
4043 = (COFF_section*)