Revert "rts/base: Fix #9423"
[ghc.git] / rts / Linker.c
1 /* -----------------------------------------------------------------------------
2 *
3 * (c) The GHC Team, 2000-2012
4 *
5 * RTS Object Linker
6 *
7 * ---------------------------------------------------------------------------*/
8
9 #if 0
10 #include "PosixSource.h"
11 #endif
12
13 /* Linux needs _GNU_SOURCE to get RTLD_DEFAULT from <dlfcn.h> and
14 MREMAP_MAYMOVE from <sys/mman.h>.
15 */
16 #if defined(__linux__) || defined(__GLIBC__)
17 #define _GNU_SOURCE 1
18 #endif
19
20 #include "Rts.h"
21 #include "HsFFI.h"
22
23 #include "sm/Storage.h"
24 #include "Stats.h"
25 #include "Hash.h"
26 #include "LinkerInternals.h"
27 #include "RtsUtils.h"
28 #include "Trace.h"
29 #include "StgPrimFloat.h" // for __int_encodeFloat etc.
30 #include "Proftimer.h"
31 #include "GetEnv.h"
32 #include "Stable.h"
33
34 #if !defined(mingw32_HOST_OS)
35 #include "posix/Signals.h"
36 #endif
37
38 // get protos for is*()
39 #include <ctype.h>
40
41 #ifdef HAVE_SYS_TYPES_H
42 #include <sys/types.h>
43 #endif
44
45 #include <inttypes.h>
46 #include <stdlib.h>
47 #include <string.h>
48 #include <stdio.h>
49 #include <assert.h>
50 #include <libgen.h>
51
52 #ifdef HAVE_SYS_STAT_H
53 #include <sys/stat.h>
54 #endif
55
56 #if defined(HAVE_DLFCN_H)
57 #include <dlfcn.h>
58 #endif
59
60 #if defined(cygwin32_HOST_OS)
61 #ifdef HAVE_DIRENT_H
62 #include <dirent.h>
63 #endif
64
65 #ifdef HAVE_SYS_TIME_H
66 #include <sys/time.h>
67 #endif
68 #include <regex.h>
69 #include <sys/fcntl.h>
70 #include <sys/termios.h>
71 #include <sys/utime.h>
72 #include <sys/utsname.h>
73 #include <sys/wait.h>
74 #endif
75
76 #if (defined(powerpc_HOST_ARCH) && defined(linux_HOST_OS)) \
77 || (!defined(powerpc_HOST_ARCH) && \
78 ( defined(linux_HOST_OS) || defined(freebsd_HOST_OS) || \
79 defined(dragonfly_HOST_OS) || defined(netbsd_HOST_OS ) || \
80 defined(openbsd_HOST_OS ) || defined(darwin_HOST_OS ) || \
81 defined(kfreebsdgnu_HOST_OS) || defined(gnu_HOST_OS)))
82 /* Don't use mmap on powerpc_HOST_ARCH as mmap doesn't support
83 * reallocating but we need to allocate jump islands just after each
84 * object images. Otherwise relative branches to jump islands can fail
85 * due to 24-bits displacement overflow.
86 */
87 #define USE_MMAP
88 #include <fcntl.h>
89 #include <sys/mman.h>
90
91 #ifdef HAVE_UNISTD_H
92 #include <unistd.h>
93 #endif
94
95 #endif
96
97
98 /* PowerPC has relative branch instructions with only 24 bit displacements
99 * and therefore needs jump islands contiguous with each object code module.
100 */
101 #if (defined(USE_MMAP) && defined(powerpc_HOST_ARCH) && defined(linux_HOST_OS))
102 #define USE_CONTIGUOUS_MMAP 1
103 #else
104 #define USE_CONTIGUOUS_MMAP 0
105 #endif
106
107 #if defined(linux_HOST_OS) || defined(solaris2_HOST_OS) || defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS) || defined(netbsd_HOST_OS) || defined(openbsd_HOST_OS) || defined(gnu_HOST_OS)
108 # define OBJFORMAT_ELF
109 # include <regex.h> // regex is already used by dlopen() so this is OK
110 // to use here without requiring an additional lib
111 #elif defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
112 # define OBJFORMAT_PEi386
113 # include <windows.h>
114 # include <math.h>
115 #elif defined(darwin_HOST_OS)
116 # define OBJFORMAT_MACHO
117 # include <regex.h>
118 # include <mach/machine.h>
119 # include <mach-o/fat.h>
120 # include <mach-o/loader.h>
121 # include <mach-o/nlist.h>
122 # include <mach-o/reloc.h>
123 #if !defined(HAVE_DLFCN_H)
124 # include <mach-o/dyld.h>
125 #endif
126 #if defined(powerpc_HOST_ARCH)
127 # include <mach-o/ppc/reloc.h>
128 #endif
129 #if defined(x86_64_HOST_ARCH)
130 # include <mach-o/x86_64/reloc.h>
131 #endif
132 #endif
133
134 #if defined(x86_64_HOST_ARCH) && defined(darwin_HOST_OS)
135 #define ALWAYS_PIC
136 #endif
137
138 #if defined(dragonfly_HOST_OS)
139 #include <sys/tls.h>
140 #endif
141
142 typedef struct _RtsSymbolInfo {
143 void *value;
144 const ObjectCode *owner;
145 HsBool weak;
146 } RtsSymbolInfo;
147
148 /* Hash table mapping symbol names to RtsSymbolInfo */
149 static /*Str*/HashTable *symhash;
150
151 /* List of currently loaded objects */
152 ObjectCode *objects = NULL; /* initially empty */
153
154 /* List of objects that have been unloaded via unloadObj(), but are waiting
155 to be actually freed via checkUnload() */
156 ObjectCode *unloaded_objects = NULL; /* initially empty */
157
158 /* Type of the initializer */
159 typedef void (*init_t) (int argc, char **argv, char **env);
160
161 static HsInt isAlreadyLoaded( pathchar *path );
162 static HsInt loadOc( ObjectCode* oc );
163 static ObjectCode* mkOc( pathchar *path, char *image, int imageSize,
164 char *archiveMemberName
165 #ifndef USE_MMAP
166 #ifdef darwin_HOST_OS
167 , int misalignment
168 #endif
169 #endif
170 );
171
172 // Use wchar_t for pathnames on Windows (#5697)
173 #if defined(mingw32_HOST_OS)
174 #define pathcmp wcscmp
175 #define pathlen wcslen
176 #define pathopen _wfopen
177 #define pathstat _wstat
178 #define struct_stat struct _stat
179 #define open wopen
180 #define WSTR(s) L##s
181 #else
182 #define pathcmp strcmp
183 #define pathlen strlen
184 #define pathopen fopen
185 #define pathstat stat
186 #define struct_stat struct stat
187 #define WSTR(s) s
188 #endif
189
190 static pathchar* pathdup(pathchar *path)
191 {
192 pathchar *ret;
193 #if defined(mingw32_HOST_OS)
194 ret = wcsdup(path);
195 #else
196 /* sigh, strdup() isn't a POSIX function, so do it the long way */
197 ret = stgMallocBytes( strlen(path)+1, "loadObj" );
198 strcpy(ret, path);
199 #endif
200 return ret;
201 }
202
203
204 #if defined(OBJFORMAT_ELF)
205 static int ocVerifyImage_ELF ( ObjectCode* oc );
206 static int ocGetNames_ELF ( ObjectCode* oc );
207 static int ocResolve_ELF ( ObjectCode* oc );
208 static int ocRunInit_ELF ( ObjectCode* oc );
209 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
210 static int ocAllocateSymbolExtras_ELF ( ObjectCode* oc );
211 #endif
212 #elif defined(OBJFORMAT_PEi386)
213 static int ocVerifyImage_PEi386 ( ObjectCode* oc );
214 static int ocGetNames_PEi386 ( ObjectCode* oc );
215 static int ocResolve_PEi386 ( ObjectCode* oc );
216 static int ocRunInit_PEi386 ( ObjectCode* oc );
217 static void *lookupSymbolInDLLs ( unsigned char *lbl );
218 static void zapTrailingAtSign ( unsigned char *sym );
219 static char *allocateImageAndTrampolines (
220 #if defined(x86_64_HOST_ARCH)
221 FILE* f, pathchar* arch_name, char* member_name,
222 #endif
223 int size );
224 #if defined(x86_64_HOST_ARCH)
225 static int ocAllocateSymbolExtras_PEi386 ( ObjectCode* oc );
226 static size_t makeSymbolExtra_PEi386( ObjectCode* oc, size_t, char* symbol );
227 #define PEi386_IMAGE_OFFSET 4
228 #else
229 #define PEi386_IMAGE_OFFSET 0
230 #endif
231 #elif defined(OBJFORMAT_MACHO)
232 static int ocVerifyImage_MachO ( ObjectCode* oc );
233 static int ocGetNames_MachO ( ObjectCode* oc );
234 static int ocResolve_MachO ( ObjectCode* oc );
235 static int ocRunInit_MachO ( ObjectCode* oc );
236
237 #ifndef USE_MMAP
238 static int machoGetMisalignment( FILE * );
239 #endif
240 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
241 static int ocAllocateSymbolExtras_MachO ( ObjectCode* oc );
242 #endif
243 #ifdef powerpc_HOST_ARCH
244 static void machoInitSymbolsWithoutUnderscore( void );
245 #endif
246 #endif
247
248 static void freeProddableBlocks (ObjectCode *oc);
249
250 /* on x86_64 we have a problem with relocating symbol references in
251 * code that was compiled without -fPIC. By default, the small memory
252 * model is used, which assumes that symbol references can fit in a
253 * 32-bit slot. The system dynamic linker makes this work for
254 * references to shared libraries by either (a) allocating a jump
255 * table slot for code references, or (b) moving the symbol at load
256 * time (and copying its contents, if necessary) for data references.
257 *
258 * We unfortunately can't tell whether symbol references are to code
259 * or data. So for now we assume they are code (the vast majority
260 * are), and allocate jump-table slots. Unfortunately this will
261 * SILENTLY generate crashing code for data references. This hack is
262 * enabled by X86_64_ELF_NONPIC_HACK.
263 *
264 * One workaround is to use shared Haskell libraries. This is
265 * coming. Another workaround is to keep the static libraries but
266 * compile them with -fPIC, because that will generate PIC references
267 * to data which can be relocated. The PIC code is still too green to
268 * do this systematically, though.
269 *
270 * See bug #781
271 * See thread http://www.haskell.org/pipermail/cvs-ghc/2007-September/038458.html
272 *
273 * Naming Scheme for Symbol Macros
274 *
275 * SymI_*: symbol is internal to the RTS. It resides in an object
276 * file/library that is statically.
277 * SymE_*: symbol is external to the RTS library. It might be linked
278 * dynamically.
279 *
280 * Sym*_HasProto : the symbol prototype is imported in an include file
281 * or defined explicitly
282 * Sym*_NeedsProto: the symbol is undefined and we add a dummy
283 * default proto extern void sym(void);
284 */
285 #define X86_64_ELF_NONPIC_HACK 1
286
287 /* Link objects into the lower 2Gb on x86_64. GHC assumes the
288 * small memory model on this architecture (see gcc docs,
289 * -mcmodel=small).
290 *
291 * MAP_32BIT not available on OpenBSD/amd64
292 */
293 #if defined(x86_64_HOST_ARCH) && defined(MAP_32BIT)
294 #define TRY_MAP_32BIT MAP_32BIT
295 #else
296 #define TRY_MAP_32BIT 0
297 #endif
298
299 /*
300 * Due to the small memory model (see above), on x86_64 we have to map
301 * all our non-PIC object files into the low 2Gb of the address space
302 * (why 2Gb and not 4Gb? Because all addresses must be reachable
303 * using a 32-bit signed PC-relative offset). On Linux we can do this
304 * using the MAP_32BIT flag to mmap(), however on other OSs
305 * (e.g. *BSD, see #2063, and also on Linux inside Xen, see #2512), we
306 * can't do this. So on these systems, we have to pick a base address
307 * in the low 2Gb of the address space and try to allocate memory from
308 * there.
309 *
310 * We pick a default address based on the OS, but also make this
311 * configurable via an RTS flag (+RTS -xm)
312 */
313 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
314
315 #if defined(MAP_32BIT)
316 // Try to use MAP_32BIT
317 #define MMAP_32BIT_BASE_DEFAULT 0
318 #else
319 // A guess: 1Gb.
320 #define MMAP_32BIT_BASE_DEFAULT 0x40000000
321 #endif
322
323 static void *mmap_32bit_base = (void *)MMAP_32BIT_BASE_DEFAULT;
324 #endif
325
326 /* MAP_ANONYMOUS is MAP_ANON on some systems, e.g. OpenBSD */
327 #if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
328 #define MAP_ANONYMOUS MAP_ANON
329 #endif
330
331 /* -----------------------------------------------------------------------------
332 * Built-in symbols from the RTS
333 */
334
335 typedef struct _RtsSymbolVal {
336 char *lbl;
337 void *addr;
338 } RtsSymbolVal;
339
340 #define Maybe_Stable_Names SymI_HasProto(stg_mkWeakzh) \
341 SymI_HasProto(stg_mkWeakNoFinalizzerzh) \
342 SymI_HasProto(stg_addCFinalizzerToWeakzh) \
343 SymI_HasProto(stg_makeStableNamezh) \
344 SymI_HasProto(stg_finalizzeWeakzh)
345
346 #if !defined (mingw32_HOST_OS)
347 #define RTS_POSIX_ONLY_SYMBOLS \
348 SymI_HasProto(__hscore_get_saved_termios) \
349 SymI_HasProto(__hscore_set_saved_termios) \
350 SymI_HasProto(shutdownHaskellAndSignal) \
351 SymI_HasProto(signal_handlers) \
352 SymI_HasProto(stg_sig_install) \
353 SymI_HasProto(rtsTimerSignal) \
354 SymI_HasProto(atexit) \
355 SymI_NeedsProto(nocldstop)
356 #endif
357
358 #if defined (cygwin32_HOST_OS)
359 #define RTS_MINGW_ONLY_SYMBOLS /**/
360 /* Don't have the ability to read import libs / archives, so
361 * we have to stupidly list a lot of what libcygwin.a
362 * exports; sigh.
363 */
364 #define RTS_CYGWIN_ONLY_SYMBOLS \
365 SymI_HasProto(regfree) \
366 SymI_HasProto(regexec) \
367 SymI_HasProto(regerror) \
368 SymI_HasProto(regcomp) \
369 SymI_HasProto(__errno) \
370 SymI_HasProto(access) \
371 SymI_HasProto(chmod) \
372 SymI_HasProto(chdir) \
373 SymI_HasProto(close) \
374 SymI_HasProto(creat) \
375 SymI_HasProto(dup) \
376 SymI_HasProto(dup2) \
377 SymI_HasProto(fstat) \
378 SymI_HasProto(fcntl) \
379 SymI_HasProto(getcwd) \
380 SymI_HasProto(getenv) \
381 SymI_HasProto(lseek) \
382 SymI_HasProto(open) \
383 SymI_HasProto(fpathconf) \
384 SymI_HasProto(pathconf) \
385 SymI_HasProto(stat) \
386 SymI_HasProto(pow) \
387 SymI_HasProto(tanh) \
388 SymI_HasProto(cosh) \
389 SymI_HasProto(sinh) \
390 SymI_HasProto(atan) \
391 SymI_HasProto(acos) \
392 SymI_HasProto(asin) \
393 SymI_HasProto(tan) \
394 SymI_HasProto(cos) \
395 SymI_HasProto(sin) \
396 SymI_HasProto(exp) \
397 SymI_HasProto(log) \
398 SymI_HasProto(sqrt) \
399 SymI_HasProto(localtime_r) \
400 SymI_HasProto(gmtime_r) \
401 SymI_HasProto(mktime) \
402 SymI_NeedsProto(_imp___tzname) \
403 SymI_HasProto(gettimeofday) \
404 SymI_HasProto(timezone) \
405 SymI_HasProto(tcgetattr) \
406 SymI_HasProto(tcsetattr) \
407 SymI_HasProto(memcpy) \
408 SymI_HasProto(memmove) \
409 SymI_HasProto(realloc) \
410 SymI_HasProto(malloc) \
411 SymI_HasProto(free) \
412 SymI_HasProto(fork) \
413 SymI_HasProto(lstat) \
414 SymI_HasProto(isatty) \
415 SymI_HasProto(mkdir) \
416 SymI_HasProto(opendir) \
417 SymI_HasProto(readdir) \
418 SymI_HasProto(rewinddir) \
419 SymI_HasProto(closedir) \
420 SymI_HasProto(link) \
421 SymI_HasProto(mkfifo) \
422 SymI_HasProto(pipe) \
423 SymI_HasProto(read) \
424 SymI_HasProto(rename) \
425 SymI_HasProto(rmdir) \
426 SymI_HasProto(select) \
427 SymI_HasProto(system) \
428 SymI_HasProto(write) \
429 SymI_HasProto(strcmp) \
430 SymI_HasProto(strcpy) \
431 SymI_HasProto(strncpy) \
432 SymI_HasProto(strerror) \
433 SymI_HasProto(sigaddset) \
434 SymI_HasProto(sigemptyset) \
435 SymI_HasProto(sigprocmask) \
436 SymI_HasProto(umask) \
437 SymI_HasProto(uname) \
438 SymI_HasProto(unlink) \
439 SymI_HasProto(utime) \
440 SymI_HasProto(waitpid)
441
442 #elif defined(mingw32_HOST_OS)
443 #define RTS_POSIX_ONLY_SYMBOLS /**/
444 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
445
446 #if HAVE_GETTIMEOFDAY
447 #define RTS_MINGW_GETTIMEOFDAY_SYM SymI_NeedsProto(gettimeofday)
448 #else
449 #define RTS_MINGW_GETTIMEOFDAY_SYM /**/
450 #endif
451
452 #if HAVE___MINGW_VFPRINTF
453 #define RTS___MINGW_VFPRINTF_SYM SymI_HasProto(__mingw_vfprintf)
454 #else
455 #define RTS___MINGW_VFPRINTF_SYM /**/
456 #endif
457
458 #if defined(i386_HOST_ARCH)
459 #define RTS_WIN32_ONLY(X) X
460 #else
461 #define RTS_WIN32_ONLY(X) /**/
462 #endif
463
464 #if defined(x86_64_HOST_ARCH)
465 #define RTS_WIN64_ONLY(X) X
466 #else
467 #define RTS_WIN64_ONLY(X) /**/
468 #endif
469
470 /* These are statically linked from the mingw libraries into the ghc
471 executable, so we have to employ this hack. */
472 #define RTS_MINGW_ONLY_SYMBOLS \
473 SymI_HasProto(stg_asyncReadzh) \
474 SymI_HasProto(stg_asyncWritezh) \
475 SymI_HasProto(stg_asyncDoProczh) \
476 SymI_HasProto(getWin32ProgArgv) \
477 SymI_HasProto(setWin32ProgArgv) \
478 SymI_HasProto(memset) \
479 SymI_HasProto(inet_ntoa) \
480 SymI_HasProto(inet_addr) \
481 SymI_HasProto(htonl) \
482 SymI_HasProto(recvfrom) \
483 SymI_HasProto(listen) \
484 SymI_HasProto(bind) \
485 SymI_HasProto(shutdown) \
486 SymI_HasProto(connect) \
487 SymI_HasProto(htons) \
488 SymI_HasProto(ntohs) \
489 SymI_HasProto(getservbyname) \
490 SymI_HasProto(getservbyport) \
491 SymI_HasProto(getprotobynumber) \
492 SymI_HasProto(getprotobyname) \
493 SymI_HasProto(gethostbyname) \
494 SymI_HasProto(gethostbyaddr) \
495 SymI_HasProto(gethostname) \
496 SymI_HasProto(strcpy) \
497 SymI_HasProto(strncpy) \
498 SymI_HasProto(abort) \
499 RTS_WIN32_ONLY(SymI_NeedsProto(_alloca)) \
500 SymI_HasProto(isxdigit) \
501 SymI_HasProto(isupper) \
502 SymI_HasProto(ispunct) \
503 SymI_HasProto(islower) \
504 SymI_HasProto(isspace) \
505 SymI_HasProto(isprint) \
506 SymI_HasProto(isdigit) \
507 SymI_HasProto(iscntrl) \
508 SymI_HasProto(isalpha) \
509 SymI_HasProto(isalnum) \
510 SymI_HasProto(isascii) \
511 RTS___MINGW_VFPRINTF_SYM \
512 SymI_HasProto(strcmp) \
513 SymI_HasProto(memmove) \
514 SymI_HasProto(realloc) \
515 SymI_HasProto(malloc) \
516 SymI_HasProto(pow) \
517 SymI_HasProto(tanh) \
518 SymI_HasProto(cosh) \
519 SymI_HasProto(sinh) \
520 SymI_HasProto(atan) \
521 SymI_HasProto(acos) \
522 SymI_HasProto(asin) \
523 SymI_HasProto(tan) \
524 SymI_HasProto(cos) \
525 SymI_HasProto(sin) \
526 SymI_HasProto(exp) \
527 SymI_HasProto(log) \
528 SymI_HasProto(sqrt) \
529 SymI_HasProto(powf) \
530 SymI_HasProto(tanhf) \
531 SymI_HasProto(coshf) \
532 SymI_HasProto(sinhf) \
533 SymI_HasProto(atanf) \
534 SymI_HasProto(acosf) \
535 SymI_HasProto(asinf) \
536 SymI_HasProto(tanf) \
537 SymI_HasProto(cosf) \
538 SymI_HasProto(sinf) \
539 SymI_HasProto(expf) \
540 SymI_HasProto(logf) \
541 SymI_HasProto(sqrtf) \
542 SymI_HasProto(erf) \
543 SymI_HasProto(erfc) \
544 SymI_HasProto(erff) \
545 SymI_HasProto(erfcf) \
546 SymI_HasProto(memcpy) \
547 SymI_HasProto(rts_InstallConsoleEvent) \
548 SymI_HasProto(rts_ConsoleHandlerDone) \
549 SymI_NeedsProto(mktime) \
550 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___timezone)) \
551 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___tzname)) \
552 RTS_WIN32_ONLY(SymI_NeedsProto(_imp__tzname)) \
553 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___iob)) \
554 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___osver)) \
555 SymI_NeedsProto(localtime) \
556 SymI_NeedsProto(gmtime) \
557 SymI_NeedsProto(opendir) \
558 SymI_NeedsProto(readdir) \
559 SymI_NeedsProto(rewinddir) \
560 RTS_WIN32_ONLY(SymI_NeedsProto(_imp____mb_cur_max)) \
561 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___pctype)) \
562 RTS_WIN32_ONLY(SymI_NeedsProto(__chkstk)) \
563 RTS_WIN64_ONLY(SymI_NeedsProto(__imp___iob_func)) \
564 RTS_WIN64_ONLY(SymI_NeedsProto(___chkstk_ms)) \
565 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_localeconv)) \
566 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_islower)) \
567 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isspace)) \
568 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isxdigit)) \
569 RTS_WIN64_ONLY(SymI_HasProto(close)) \
570 RTS_WIN64_ONLY(SymI_HasProto(read)) \
571 RTS_WIN64_ONLY(SymI_HasProto(dup)) \
572 RTS_WIN64_ONLY(SymI_HasProto(dup2)) \
573 RTS_WIN64_ONLY(SymI_HasProto(write)) \
574 SymI_NeedsProto(getpid) \
575 RTS_WIN64_ONLY(SymI_HasProto(access)) \
576 SymI_HasProto(chmod) \
577 RTS_WIN64_ONLY(SymI_HasProto(creat)) \
578 RTS_WIN64_ONLY(SymI_HasProto(umask)) \
579 SymI_HasProto(unlink) \
580 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__errno)) \
581 RTS_WIN64_ONLY(SymI_NeedsProto(ftruncate64)) \
582 RTS_WIN64_ONLY(SymI_HasProto(setmode)) \
583 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wstat64)) \
584 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__fstat64)) \
585 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wsopen)) \
586 RTS_WIN64_ONLY(SymI_HasProto(__imp__environ)) \
587 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileAttributesA)) \
588 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileInformationByHandle)) \
589 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileType)) \
590 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetLastError)) \
591 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceFrequency)) \
592 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceCounter)) \
593 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetTickCount)) \
594 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WaitForSingleObject)) \
595 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekConsoleInputA)) \
596 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ReadConsoleInputA)) \
597 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekNamedPipe)) \
598 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__isatty)) \
599 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_select)) \
600 RTS_WIN64_ONLY(SymI_HasProto(isatty)) \
601 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__get_osfhandle)) \
602 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetConsoleMode)) \
603 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetConsoleMode)) \
604 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FlushConsoleInputBuffer)) \
605 RTS_WIN64_ONLY(SymI_HasProto(free)) \
606 RTS_WIN64_ONLY(SymI_NeedsProto(raise)) \
607 RTS_WIN64_ONLY(SymI_NeedsProto(_getpid)) \
608 RTS_WIN64_ONLY(SymI_HasProto(getc)) \
609 RTS_WIN64_ONLY(SymI_HasProto(ungetc)) \
610 RTS_WIN64_ONLY(SymI_HasProto(puts)) \
611 RTS_WIN64_ONLY(SymI_HasProto(putc)) \
612 RTS_WIN64_ONLY(SymI_HasProto(putchar)) \
613 RTS_WIN64_ONLY(SymI_HasProto(fputc)) \
614 RTS_WIN64_ONLY(SymI_HasProto(fread)) \
615 RTS_WIN64_ONLY(SymI_HasProto(fwrite)) \
616 RTS_WIN64_ONLY(SymI_HasProto(ferror)) \
617 RTS_WIN64_ONLY(SymI_HasProto(printf)) \
618 RTS_WIN64_ONLY(SymI_HasProto(fprintf)) \
619 RTS_WIN64_ONLY(SymI_HasProto(sprintf)) \
620 RTS_WIN64_ONLY(SymI_HasProto(vsprintf)) \
621 RTS_WIN64_ONLY(SymI_HasProto(sscanf)) \
622 RTS_WIN64_ONLY(SymI_HasProto(ldexp)) \
623 RTS_WIN64_ONLY(SymI_HasProto(strlen)) \
624 RTS_WIN64_ONLY(SymI_HasProto(strnlen)) \
625 RTS_WIN64_ONLY(SymI_HasProto(strchr)) \
626 RTS_WIN64_ONLY(SymI_HasProto(strtol)) \
627 RTS_WIN64_ONLY(SymI_HasProto(strerror)) \
628 RTS_WIN64_ONLY(SymI_HasProto(memchr)) \
629 RTS_WIN64_ONLY(SymI_HasProto(memcmp)) \
630 RTS_WIN64_ONLY(SymI_HasProto(wcscpy)) \
631 RTS_WIN64_ONLY(SymI_HasProto(wcslen)) \
632 RTS_WIN64_ONLY(SymI_HasProto(_lseeki64)) \
633 RTS_WIN64_ONLY(SymI_HasProto(_wchmod)) \
634 RTS_WIN64_ONLY(SymI_HasProto(closesocket)) \
635 RTS_WIN64_ONLY(SymI_HasProto(send)) \
636 RTS_WIN64_ONLY(SymI_HasProto(recv)) \
637 RTS_WIN64_ONLY(SymI_HasProto(bsearch)) \
638 RTS_WIN64_ONLY(SymI_HasProto(CommandLineToArgvW)) \
639 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmap)) \
640 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmapIndirect)) \
641 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleBitmap)) \
642 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBPatternBrushPt)) \
643 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBitmap)) \
644 RTS_WIN64_ONLY(SymI_HasProto(SetBitmapDimensionEx)) \
645 RTS_WIN64_ONLY(SymI_HasProto(GetBitmapDimensionEx)) \
646 RTS_WIN64_ONLY(SymI_HasProto(GetStockObject)) \
647 RTS_WIN64_ONLY(SymI_HasProto(GetObjectW)) \
648 RTS_WIN64_ONLY(SymI_HasProto(DeleteObject)) \
649 RTS_WIN64_ONLY(SymI_HasProto(SetDIBits)) \
650 RTS_WIN64_ONLY(SymI_HasProto(GetDIBits)) \
651 RTS_WIN64_ONLY(SymI_HasProto(CreateSolidBrush)) \
652 RTS_WIN64_ONLY(SymI_HasProto(CreateHatchBrush)) \
653 RTS_WIN64_ONLY(SymI_HasProto(CreatePatternBrush)) \
654 RTS_WIN64_ONLY(SymI_HasProto(CreateFontW)) \
655 RTS_WIN64_ONLY(SymI_HasProto(AngleArc)) \
656 RTS_WIN64_ONLY(SymI_HasProto(Arc)) \
657 RTS_WIN64_ONLY(SymI_HasProto(ArcTo)) \
658 RTS_WIN64_ONLY(SymI_HasProto(BeginPath)) \
659 RTS_WIN64_ONLY(SymI_HasProto(BitBlt)) \
660 RTS_WIN64_ONLY(SymI_HasProto(CancelDC)) \
661 RTS_WIN64_ONLY(SymI_HasProto(Chord)) \
662 RTS_WIN64_ONLY(SymI_HasProto(CloseFigure)) \
663 RTS_WIN64_ONLY(SymI_HasProto(CombineRgn)) \
664 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleDC)) \
665 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgn)) \
666 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgnIndirect)) \
667 RTS_WIN64_ONLY(SymI_HasProto(CreatePen)) \
668 RTS_WIN64_ONLY(SymI_HasProto(CreatePolygonRgn)) \
669 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgn)) \
670 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgnIndirect)) \
671 RTS_WIN64_ONLY(SymI_HasProto(CreateRoundRectRgn)) \
672 RTS_WIN64_ONLY(SymI_HasProto(DeleteDC)) \
673 RTS_WIN64_ONLY(SymI_HasProto(Ellipse)) \
674 RTS_WIN64_ONLY(SymI_HasProto(EndPath)) \
675 RTS_WIN64_ONLY(SymI_HasProto(EqualRgn)) \
676 RTS_WIN64_ONLY(SymI_HasProto(ExtSelectClipRgn)) \
677 RTS_WIN64_ONLY(SymI_HasProto(FillPath)) \
678 RTS_WIN64_ONLY(SymI_HasProto(FillRgn)) \
679 RTS_WIN64_ONLY(SymI_HasProto(FlattenPath)) \
680 RTS_WIN64_ONLY(SymI_HasProto(FrameRgn)) \
681 RTS_WIN64_ONLY(SymI_HasProto(GetArcDirection)) \
682 RTS_WIN64_ONLY(SymI_HasProto(GetBkColor)) \
683 RTS_WIN64_ONLY(SymI_HasProto(GetBkMode)) \
684 RTS_WIN64_ONLY(SymI_HasProto(GetBrushOrgEx)) \
685 RTS_WIN64_ONLY(SymI_HasProto(GetCurrentObject)) \
686 RTS_WIN64_ONLY(SymI_HasProto(GetDCOrgEx)) \
687 RTS_WIN64_ONLY(SymI_HasProto(GetGraphicsMode)) \
688 RTS_WIN64_ONLY(SymI_HasProto(GetMiterLimit)) \
689 RTS_WIN64_ONLY(SymI_HasProto(GetPolyFillMode)) \
690 RTS_WIN64_ONLY(SymI_HasProto(GetRgnBox)) \
691 RTS_WIN64_ONLY(SymI_HasProto(GetStretchBltMode)) \
692 RTS_WIN64_ONLY(SymI_HasProto(GetTextAlign)) \
693 RTS_WIN64_ONLY(SymI_HasProto(GetTextCharacterExtra)) \
694 RTS_WIN64_ONLY(SymI_HasProto(GetTextColor)) \
695 RTS_WIN64_ONLY(SymI_HasProto(GetTextExtentPoint32W)) \
696 RTS_WIN64_ONLY(SymI_HasProto(InvertRgn)) \
697 RTS_WIN64_ONLY(SymI_HasProto(LineTo)) \
698 RTS_WIN64_ONLY(SymI_HasProto(MaskBlt)) \
699 RTS_WIN64_ONLY(SymI_HasProto(MoveToEx)) \
700 RTS_WIN64_ONLY(SymI_HasProto(OffsetRgn)) \
701 RTS_WIN64_ONLY(SymI_HasProto(PaintRgn)) \
702 RTS_WIN64_ONLY(SymI_HasProto(PathToRegion)) \
703 RTS_WIN64_ONLY(SymI_HasProto(Pie)) \
704 RTS_WIN64_ONLY(SymI_HasProto(PlgBlt)) \
705 RTS_WIN64_ONLY(SymI_HasProto(PolyBezier)) \
706 RTS_WIN64_ONLY(SymI_HasProto(PolyBezierTo)) \
707 RTS_WIN64_ONLY(SymI_HasProto(Polygon)) \
708 RTS_WIN64_ONLY(SymI_HasProto(Polyline)) \
709 RTS_WIN64_ONLY(SymI_HasProto(PolylineTo)) \
710 RTS_WIN64_ONLY(SymI_HasProto(PtInRegion)) \
711 RTS_WIN64_ONLY(SymI_HasProto(Rectangle)) \
712 RTS_WIN64_ONLY(SymI_HasProto(RectInRegion)) \
713 RTS_WIN64_ONLY(SymI_HasProto(RestoreDC)) \
714 RTS_WIN64_ONLY(SymI_HasProto(RoundRect)) \
715 RTS_WIN64_ONLY(SymI_HasProto(SaveDC)) \
716 RTS_WIN64_ONLY(SymI_HasProto(SelectClipPath)) \
717 RTS_WIN64_ONLY(SymI_HasProto(SelectClipRgn)) \
718 RTS_WIN64_ONLY(SymI_HasProto(SelectObject)) \
719 RTS_WIN64_ONLY(SymI_HasProto(SelectPalette)) \
720 RTS_WIN64_ONLY(SymI_HasProto(SetArcDirection)) \
721 RTS_WIN64_ONLY(SymI_HasProto(SetBkColor)) \
722 RTS_WIN64_ONLY(SymI_HasProto(SetBkMode)) \
723 RTS_WIN64_ONLY(SymI_HasProto(SetBrushOrgEx)) \
724 RTS_WIN64_ONLY(SymI_HasProto(SetGraphicsMode)) \
725 RTS_WIN64_ONLY(SymI_HasProto(SetMiterLimit)) \
726 RTS_WIN64_ONLY(SymI_HasProto(SetPolyFillMode)) \
727 RTS_WIN64_ONLY(SymI_HasProto(SetStretchBltMode)) \
728 RTS_WIN64_ONLY(SymI_HasProto(SetTextAlign)) \
729 RTS_WIN64_ONLY(SymI_HasProto(SetTextCharacterExtra)) \
730 RTS_WIN64_ONLY(SymI_HasProto(SetTextColor)) \
731 RTS_WIN64_ONLY(SymI_HasProto(StretchBlt)) \
732 RTS_WIN64_ONLY(SymI_HasProto(StrokeAndFillPath)) \
733 RTS_WIN64_ONLY(SymI_HasProto(StrokePath)) \
734 RTS_WIN64_ONLY(SymI_HasProto(TextOutW)) \
735 RTS_WIN64_ONLY(SymI_HasProto(timeGetTime)) \
736 RTS_WIN64_ONLY(SymI_HasProto(WidenPath)) \
737 RTS_WIN64_ONLY(SymI_HasProto(GetFileSecurityW)) \
738 RTS_WIN64_ONLY(SymI_HasProto(RegCloseKey)) \
739 RTS_WIN64_ONLY(SymI_HasProto(RegConnectRegistryW)) \
740 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyExW)) \
741 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyW)) \
742 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteKeyW)) \
743 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteValueW)) \
744 RTS_WIN64_ONLY(SymI_HasProto(RegEnumKeyW)) \
745 RTS_WIN64_ONLY(SymI_HasProto(RegEnumValueW)) \
746 RTS_WIN64_ONLY(SymI_HasProto(RegFlushKey)) \
747 RTS_WIN64_ONLY(SymI_HasProto(RegLoadKeyW)) \
748 RTS_WIN64_ONLY(SymI_HasProto(RegNotifyChangeKeyValue)) \
749 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyExW)) \
750 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyW)) \
751 RTS_WIN64_ONLY(SymI_HasProto(RegQueryInfoKeyW)) \
752 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueExW)) \
753 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueW)) \
754 RTS_WIN64_ONLY(SymI_HasProto(RegReplaceKeyW)) \
755 RTS_WIN64_ONLY(SymI_HasProto(RegRestoreKeyW)) \
756 RTS_WIN64_ONLY(SymI_HasProto(RegSaveKeyW)) \
757 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueExW)) \
758 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueW)) \
759 RTS_WIN64_ONLY(SymI_HasProto(RegUnLoadKeyW)) \
760 RTS_WIN64_ONLY(SymI_NeedsProto(SHGetFolderPathW)) \
761 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetWindowLongPtrW)) \
762 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetWindowLongPtrW)) \
763 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_MenuItemFromPoint)) \
764 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPoint)) \
765 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPointEx)) \
766 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DeleteObject)) \
767 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_UnmapViewOfFile)) \
768 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CloseHandle)) \
769 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FreeLibrary)) \
770 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetMessageW)) \
771 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TranslateMessage)) \
772 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DispatchMessageW)) \
773 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DefWindowProcW)) \
774 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetDIBits)) \
775 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalAlloc)) \
776 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalFree)) \
777 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateFileW)) \
778 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WriteFile)) \
779 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateCompatibleBitmap)) \
780 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SelectObject)) \
781 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_Polygon)) \
782 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FormatMessageW)) \
783 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__localtime64)) \
784 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__tzname)) \
785 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__timezone)) \
786 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreatePipe)) \
787 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetHandleInformation)) \
788 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetStdHandle)) \
789 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetCurrentProcess)) \
790 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DuplicateHandle)) \
791 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateProcessW)) \
792 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TerminateProcess)) \
793 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__open_osfhandle)) \
794 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetExitCodeProcess)) \
795 RTS_MINGW_GETTIMEOFDAY_SYM \
796 SymI_NeedsProto(closedir)
797
798 #else
799 #define RTS_MINGW_ONLY_SYMBOLS /**/
800 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
801 #endif
802
803
804 #if defined(darwin_HOST_OS) && HAVE_PRINTF_LDBLSTUB
805 #define RTS_DARWIN_ONLY_SYMBOLS \
806 SymI_NeedsProto(asprintf$LDBLStub) \
807 SymI_NeedsProto(err$LDBLStub) \
808 SymI_NeedsProto(errc$LDBLStub) \
809 SymI_NeedsProto(errx$LDBLStub) \
810 SymI_NeedsProto(fprintf$LDBLStub) \
811 SymI_NeedsProto(fscanf$LDBLStub) \
812 SymI_NeedsProto(fwprintf$LDBLStub) \
813 SymI_NeedsProto(fwscanf$LDBLStub) \
814 SymI_NeedsProto(printf$LDBLStub) \
815 SymI_NeedsProto(scanf$LDBLStub) \
816 SymI_NeedsProto(snprintf$LDBLStub) \
817 SymI_NeedsProto(sprintf$LDBLStub) \
818 SymI_NeedsProto(sscanf$LDBLStub) \
819 SymI_NeedsProto(strtold$LDBLStub) \
820 SymI_NeedsProto(swprintf$LDBLStub) \
821 SymI_NeedsProto(swscanf$LDBLStub) \
822 SymI_NeedsProto(syslog$LDBLStub) \
823 SymI_NeedsProto(vasprintf$LDBLStub) \
824 SymI_NeedsProto(verr$LDBLStub) \
825 SymI_NeedsProto(verrc$LDBLStub) \
826 SymI_NeedsProto(verrx$LDBLStub) \
827 SymI_NeedsProto(vfprintf$LDBLStub) \
828 SymI_NeedsProto(vfscanf$LDBLStub) \
829 SymI_NeedsProto(vfwprintf$LDBLStub) \
830 SymI_NeedsProto(vfwscanf$LDBLStub) \
831 SymI_NeedsProto(vprintf$LDBLStub) \
832 SymI_NeedsProto(vscanf$LDBLStub) \
833 SymI_NeedsProto(vsnprintf$LDBLStub) \
834 SymI_NeedsProto(vsprintf$LDBLStub) \
835 SymI_NeedsProto(vsscanf$LDBLStub) \
836 SymI_NeedsProto(vswprintf$LDBLStub) \
837 SymI_NeedsProto(vswscanf$LDBLStub) \
838 SymI_NeedsProto(vsyslog$LDBLStub) \
839 SymI_NeedsProto(vwarn$LDBLStub) \
840 SymI_NeedsProto(vwarnc$LDBLStub) \
841 SymI_NeedsProto(vwarnx$LDBLStub) \
842 SymI_NeedsProto(vwprintf$LDBLStub) \
843 SymI_NeedsProto(vwscanf$LDBLStub) \
844 SymI_NeedsProto(warn$LDBLStub) \
845 SymI_NeedsProto(warnc$LDBLStub) \
846 SymI_NeedsProto(warnx$LDBLStub) \
847 SymI_NeedsProto(wcstold$LDBLStub) \
848 SymI_NeedsProto(wprintf$LDBLStub) \
849 SymI_NeedsProto(wscanf$LDBLStub)
850 #else
851 #define RTS_DARWIN_ONLY_SYMBOLS
852 #endif
853
854 #ifndef SMP
855 # define MAIN_CAP_SYM SymI_HasProto(MainCapability)
856 #else
857 # define MAIN_CAP_SYM
858 #endif
859
860 #if !defined(mingw32_HOST_OS)
861 #define RTS_USER_SIGNALS_SYMBOLS \
862 SymI_HasProto(setIOManagerControlFd) \
863 SymI_HasProto(setIOManagerWakeupFd) \
864 SymI_HasProto(ioManagerWakeup) \
865 SymI_HasProto(blockUserSignals) \
866 SymI_HasProto(unblockUserSignals)
867 #else
868 #define RTS_USER_SIGNALS_SYMBOLS \
869 SymI_HasProto(ioManagerWakeup) \
870 SymI_HasProto(sendIOManagerEvent) \
871 SymI_HasProto(readIOManagerEvent) \
872 SymI_HasProto(getIOManagerEvent) \
873 SymI_HasProto(console_handler)
874 #endif
875
876 #define RTS_LIBFFI_SYMBOLS \
877 SymE_NeedsProto(ffi_prep_cif) \
878 SymE_NeedsProto(ffi_call) \
879 SymE_NeedsProto(ffi_type_void) \
880 SymE_NeedsProto(ffi_type_float) \
881 SymE_NeedsProto(ffi_type_double) \
882 SymE_NeedsProto(ffi_type_sint64) \
883 SymE_NeedsProto(ffi_type_uint64) \
884 SymE_NeedsProto(ffi_type_sint32) \
885 SymE_NeedsProto(ffi_type_uint32) \
886 SymE_NeedsProto(ffi_type_sint16) \
887 SymE_NeedsProto(ffi_type_uint16) \
888 SymE_NeedsProto(ffi_type_sint8) \
889 SymE_NeedsProto(ffi_type_uint8) \
890 SymE_NeedsProto(ffi_type_pointer)
891
892 #ifdef TABLES_NEXT_TO_CODE
893 #define RTS_RET_SYMBOLS /* nothing */
894 #else
895 #define RTS_RET_SYMBOLS \
896 SymI_HasProto(stg_enter_ret) \
897 SymI_HasProto(stg_gc_fun_ret) \
898 SymI_HasProto(stg_ap_v_ret) \
899 SymI_HasProto(stg_ap_f_ret) \
900 SymI_HasProto(stg_ap_d_ret) \
901 SymI_HasProto(stg_ap_l_ret) \
902 SymI_HasProto(stg_ap_v16_ret) \
903 SymI_HasProto(stg_ap_v32_ret) \
904 SymI_HasProto(stg_ap_v64_ret) \
905 SymI_HasProto(stg_ap_n_ret) \
906 SymI_HasProto(stg_ap_p_ret) \
907 SymI_HasProto(stg_ap_pv_ret) \
908 SymI_HasProto(stg_ap_pp_ret) \
909 SymI_HasProto(stg_ap_ppv_ret) \
910 SymI_HasProto(stg_ap_ppp_ret) \
911 SymI_HasProto(stg_ap_pppv_ret) \
912 SymI_HasProto(stg_ap_pppp_ret) \
913 SymI_HasProto(stg_ap_ppppp_ret) \
914 SymI_HasProto(stg_ap_pppppp_ret)
915 #endif
916
917 /* Modules compiled with -ticky may mention ticky counters */
918 /* This list should marry up with the one in $(TOP)/includes/stg/Ticky.h */
919 #define RTS_TICKY_SYMBOLS \
920 SymI_NeedsProto(ticky_entry_ctrs) \
921 SymI_NeedsProto(top_ct) \
922 \
923 SymI_HasProto(ENT_VIA_NODE_ctr) \
924 SymI_HasProto(ENT_STATIC_THK_SINGLE_ctr) \
925 SymI_HasProto(ENT_STATIC_THK_MANY_ctr) \
926 SymI_HasProto(ENT_DYN_THK_SINGLE_ctr) \
927 SymI_HasProto(ENT_DYN_THK_MANY_ctr) \
928 SymI_HasProto(ENT_STATIC_FUN_DIRECT_ctr) \
929 SymI_HasProto(ENT_DYN_FUN_DIRECT_ctr) \
930 SymI_HasProto(ENT_STATIC_CON_ctr) \
931 SymI_HasProto(ENT_DYN_CON_ctr) \
932 SymI_HasProto(ENT_STATIC_IND_ctr) \
933 SymI_HasProto(ENT_DYN_IND_ctr) \
934 SymI_HasProto(ENT_PERM_IND_ctr) \
935 SymI_HasProto(ENT_PAP_ctr) \
936 SymI_HasProto(ENT_AP_ctr) \
937 SymI_HasProto(ENT_AP_STACK_ctr) \
938 SymI_HasProto(ENT_BH_ctr) \
939 SymI_HasProto(ENT_LNE_ctr) \
940 SymI_HasProto(UNKNOWN_CALL_ctr) \
941 SymI_HasProto(SLOW_CALL_fast_v16_ctr) \
942 SymI_HasProto(SLOW_CALL_fast_v_ctr) \
943 SymI_HasProto(SLOW_CALL_fast_f_ctr) \
944 SymI_HasProto(SLOW_CALL_fast_d_ctr) \
945 SymI_HasProto(SLOW_CALL_fast_l_ctr) \
946 SymI_HasProto(SLOW_CALL_fast_n_ctr) \
947 SymI_HasProto(SLOW_CALL_fast_p_ctr) \
948 SymI_HasProto(SLOW_CALL_fast_pv_ctr) \
949 SymI_HasProto(SLOW_CALL_fast_pp_ctr) \
950 SymI_HasProto(SLOW_CALL_fast_ppv_ctr) \
951 SymI_HasProto(SLOW_CALL_fast_ppp_ctr) \
952 SymI_HasProto(SLOW_CALL_fast_pppv_ctr) \
953 SymI_HasProto(SLOW_CALL_fast_pppp_ctr) \
954 SymI_HasProto(SLOW_CALL_fast_ppppp_ctr) \
955 SymI_HasProto(SLOW_CALL_fast_pppppp_ctr) \
956 SymI_HasProto(VERY_SLOW_CALL_ctr) \
957 SymI_HasProto(ticky_slow_call_unevald) \
958 SymI_HasProto(SLOW_CALL_ctr) \
959 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_ctr) \
960 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_CHUNKS_ctr) \
961 SymI_HasProto(KNOWN_CALL_ctr) \
962 SymI_HasProto(KNOWN_CALL_TOO_FEW_ARGS_ctr) \
963 SymI_HasProto(KNOWN_CALL_EXTRA_ARGS_ctr) \
964 SymI_HasProto(SLOW_CALL_FUN_TOO_FEW_ctr) \
965 SymI_HasProto(SLOW_CALL_FUN_CORRECT_ctr) \
966 SymI_HasProto(SLOW_CALL_FUN_TOO_MANY_ctr) \
967 SymI_HasProto(SLOW_CALL_PAP_TOO_FEW_ctr) \
968 SymI_HasProto(SLOW_CALL_PAP_CORRECT_ctr) \
969 SymI_HasProto(SLOW_CALL_PAP_TOO_MANY_ctr) \
970 SymI_HasProto(SLOW_CALL_UNEVALD_ctr) \
971 SymI_HasProto(UPDF_OMITTED_ctr) \
972 SymI_HasProto(UPDF_PUSHED_ctr) \
973 SymI_HasProto(CATCHF_PUSHED_ctr) \
974 SymI_HasProto(UPDF_RCC_PUSHED_ctr) \
975 SymI_HasProto(UPDF_RCC_OMITTED_ctr) \
976 SymI_HasProto(UPD_SQUEEZED_ctr) \
977 SymI_HasProto(UPD_CON_IN_NEW_ctr) \
978 SymI_HasProto(UPD_CON_IN_PLACE_ctr) \
979 SymI_HasProto(UPD_PAP_IN_NEW_ctr) \
980 SymI_HasProto(UPD_PAP_IN_PLACE_ctr) \
981 SymI_HasProto(ALLOC_HEAP_ctr) \
982 SymI_HasProto(ALLOC_HEAP_tot) \
983 SymI_HasProto(HEAP_CHK_ctr) \
984 SymI_HasProto(STK_CHK_ctr) \
985 SymI_HasProto(ALLOC_RTS_ctr) \
986 SymI_HasProto(ALLOC_RTS_tot) \
987 SymI_HasProto(ALLOC_FUN_ctr) \
988 SymI_HasProto(ALLOC_FUN_adm) \
989 SymI_HasProto(ALLOC_FUN_gds) \
990 SymI_HasProto(ALLOC_FUN_slp) \
991 SymI_HasProto(UPD_NEW_IND_ctr) \
992 SymI_HasProto(UPD_NEW_PERM_IND_ctr) \
993 SymI_HasProto(UPD_OLD_IND_ctr) \
994 SymI_HasProto(UPD_OLD_PERM_IND_ctr) \
995 SymI_HasProto(UPD_CAF_BH_UPDATABLE_ctr) \
996 SymI_HasProto(UPD_CAF_BH_SINGLE_ENTRY_ctr) \
997 SymI_HasProto(GC_SEL_ABANDONED_ctr) \
998 SymI_HasProto(GC_SEL_MINOR_ctr) \
999 SymI_HasProto(GC_SEL_MAJOR_ctr) \
1000 SymI_HasProto(GC_FAILED_PROMOTION_ctr) \
1001 SymI_HasProto(ALLOC_UP_THK_ctr) \
1002 SymI_HasProto(ALLOC_SE_THK_ctr) \
1003 SymI_HasProto(ALLOC_THK_adm) \
1004 SymI_HasProto(ALLOC_THK_gds) \
1005 SymI_HasProto(ALLOC_THK_slp) \
1006 SymI_HasProto(ALLOC_CON_ctr) \
1007 SymI_HasProto(ALLOC_CON_adm) \
1008 SymI_HasProto(ALLOC_CON_gds) \
1009 SymI_HasProto(ALLOC_CON_slp) \
1010 SymI_HasProto(ALLOC_TUP_ctr) \
1011 SymI_HasProto(ALLOC_TUP_adm) \
1012 SymI_HasProto(ALLOC_TUP_gds) \
1013 SymI_HasProto(ALLOC_TUP_slp) \
1014 SymI_HasProto(ALLOC_BH_ctr) \
1015 SymI_HasProto(ALLOC_BH_adm) \
1016 SymI_HasProto(ALLOC_BH_gds) \
1017 SymI_HasProto(ALLOC_BH_slp) \
1018 SymI_HasProto(ALLOC_PRIM_ctr) \
1019 SymI_HasProto(ALLOC_PRIM_adm) \
1020 SymI_HasProto(ALLOC_PRIM_gds) \
1021 SymI_HasProto(ALLOC_PRIM_slp) \
1022 SymI_HasProto(ALLOC_PAP_ctr) \
1023 SymI_HasProto(ALLOC_PAP_adm) \
1024 SymI_HasProto(ALLOC_PAP_gds) \
1025 SymI_HasProto(ALLOC_PAP_slp) \
1026 SymI_HasProto(ALLOC_TSO_ctr) \
1027 SymI_HasProto(ALLOC_TSO_adm) \
1028 SymI_HasProto(ALLOC_TSO_gds) \
1029 SymI_HasProto(ALLOC_TSO_slp) \
1030 SymI_HasProto(RET_NEW_ctr) \
1031 SymI_HasProto(RET_OLD_ctr) \
1032 SymI_HasProto(RET_UNBOXED_TUP_ctr) \
1033 SymI_HasProto(RET_SEMI_loads_avoided)
1034
1035
1036 // On most platforms, the garbage collector rewrites references
1037 // to small integer and char objects to a set of common, shared ones.
1038 //
1039 // We don't do this when compiling to Windows DLLs at the moment because
1040 // it doesn't support cross package data references well.
1041 //
1042 #if defined(COMPILING_WINDOWS_DLL)
1043 #define RTS_INTCHAR_SYMBOLS
1044 #else
1045 #define RTS_INTCHAR_SYMBOLS \
1046 SymI_HasProto(stg_CHARLIKE_closure) \
1047 SymI_HasProto(stg_INTLIKE_closure)
1048 #endif
1049
1050
1051 #define RTS_SYMBOLS \
1052 Maybe_Stable_Names \
1053 RTS_TICKY_SYMBOLS \
1054 SymI_HasProto(StgReturn) \
1055 SymI_HasProto(stg_gc_noregs) \
1056 SymI_HasProto(stg_ret_v_info) \
1057 SymI_HasProto(stg_ret_p_info) \
1058 SymI_HasProto(stg_ret_n_info) \
1059 SymI_HasProto(stg_ret_f_info) \
1060 SymI_HasProto(stg_ret_d_info) \
1061 SymI_HasProto(stg_ret_l_info) \
1062 SymI_HasProto(stg_gc_prim_p) \
1063 SymI_HasProto(stg_gc_prim_pp) \
1064 SymI_HasProto(stg_gc_prim_n) \
1065 SymI_HasProto(stg_enter_info) \
1066 SymI_HasProto(__stg_gc_enter_1) \
1067 SymI_HasProto(stg_gc_unpt_r1) \
1068 SymI_HasProto(stg_gc_unbx_r1) \
1069 SymI_HasProto(stg_gc_f1) \
1070 SymI_HasProto(stg_gc_d1) \
1071 SymI_HasProto(stg_gc_l1) \
1072 SymI_HasProto(stg_gc_pp) \
1073 SymI_HasProto(stg_gc_ppp) \
1074 SymI_HasProto(stg_gc_pppp) \
1075 SymI_HasProto(__stg_gc_fun) \
1076 SymI_HasProto(stg_gc_fun_info) \
1077 SymI_HasProto(stg_yield_noregs) \
1078 SymI_HasProto(stg_yield_to_interpreter) \
1079 SymI_HasProto(stg_block_noregs) \
1080 SymI_HasProto(stg_block_takemvar) \
1081 SymI_HasProto(stg_block_readmvar) \
1082 SymI_HasProto(stg_block_putmvar) \
1083 MAIN_CAP_SYM \
1084 SymI_HasProto(MallocFailHook) \
1085 SymI_HasProto(OnExitHook) \
1086 SymI_HasProto(OutOfHeapHook) \
1087 SymI_HasProto(StackOverflowHook) \
1088 SymI_HasProto(addDLL) \
1089 SymI_HasProto(__int_encodeDouble) \
1090 SymI_HasProto(__word_encodeDouble) \
1091 SymI_HasProto(__int_encodeFloat) \
1092 SymI_HasProto(__word_encodeFloat) \
1093 SymI_HasProto(stg_atomicallyzh) \
1094 SymI_HasProto(barf) \
1095 SymI_HasProto(debugBelch) \
1096 SymI_HasProto(errorBelch) \
1097 SymI_HasProto(sysErrorBelch) \
1098 SymI_HasProto(stg_getMaskingStatezh) \
1099 SymI_HasProto(stg_maskAsyncExceptionszh) \
1100 SymI_HasProto(stg_maskUninterruptiblezh) \
1101 SymI_HasProto(stg_catchzh) \
1102 SymI_HasProto(stg_catchRetryzh) \
1103 SymI_HasProto(stg_catchSTMzh) \
1104 SymI_HasProto(stg_checkzh) \
1105 SymI_HasProto(closure_flags) \
1106 SymI_HasProto(cmp_thread) \
1107 SymI_HasProto(createAdjustor) \
1108 SymI_HasProto(stg_decodeDoublezu2Intzh) \
1109 SymI_HasProto(stg_decodeFloatzuIntzh) \
1110 SymI_HasProto(defaultsHook) \
1111 SymI_HasProto(stg_delayzh) \
1112 SymI_HasProto(stg_deRefWeakzh) \
1113 SymI_HasProto(stg_deRefStablePtrzh) \
1114 SymI_HasProto(dirty_MUT_VAR) \
1115 SymI_HasProto(dirty_TVAR) \
1116 SymI_HasProto(stg_forkzh) \
1117 SymI_HasProto(stg_forkOnzh) \
1118 SymI_HasProto(forkProcess) \
1119 SymI_HasProto(forkOS_createThread) \
1120 SymI_HasProto(freeHaskellFunctionPtr) \
1121 SymI_HasProto(getOrSetGHCConcSignalSignalHandlerStore) \
1122 SymI_HasProto(getOrSetGHCConcWindowsPendingDelaysStore) \
1123 SymI_HasProto(getOrSetGHCConcWindowsIOManagerThreadStore) \
1124 SymI_HasProto(getOrSetGHCConcWindowsProddingStore) \
1125 SymI_HasProto(getOrSetSystemEventThreadEventManagerStore) \
1126 SymI_HasProto(getOrSetSystemEventThreadIOManagerThreadStore) \
1127 SymI_HasProto(getOrSetSystemTimerThreadEventManagerStore) \
1128 SymI_HasProto(getOrSetSystemTimerThreadIOManagerThreadStore) \
1129 SymI_HasProto(getOrSetLibHSghcFastStringTable) \
1130 SymI_HasProto(getGCStats) \
1131 SymI_HasProto(getGCStatsEnabled) \
1132 SymI_HasProto(genericRaise) \
1133 SymI_HasProto(getProgArgv) \
1134 SymI_HasProto(getFullProgArgv) \
1135 SymI_HasProto(getStablePtr) \
1136 SymI_HasProto(foreignExportStablePtr) \
1137 SymI_HasProto(hs_init) \
1138 SymI_HasProto(hs_exit) \
1139 SymI_HasProto(hs_set_argv) \
1140 SymI_HasProto(hs_add_root) \
1141 SymI_HasProto(hs_perform_gc) \
1142 SymI_HasProto(hs_lock_stable_tables) \
1143 SymI_HasProto(hs_unlock_stable_tables) \
1144 SymI_HasProto(hs_free_stable_ptr) \
1145 SymI_HasProto(hs_free_stable_ptr_unsafe) \
1146 SymI_HasProto(hs_free_fun_ptr) \
1147 SymI_HasProto(hs_hpc_rootModule) \
1148 SymI_HasProto(hs_hpc_module) \
1149 SymI_HasProto(initLinker) \
1150 SymI_HasProto(initLinker_) \
1151 SymI_HasProto(stg_unpackClosurezh) \
1152 SymI_HasProto(stg_getApStackValzh) \
1153 SymI_HasProto(stg_getSparkzh) \
1154 SymI_HasProto(stg_numSparkszh) \
1155 SymI_HasProto(stg_isCurrentThreadBoundzh) \
1156 SymI_HasProto(stg_isEmptyMVarzh) \
1157 SymI_HasProto(stg_killThreadzh) \
1158 SymI_HasProto(loadArchive) \
1159 SymI_HasProto(loadObj) \
1160 SymI_HasProto(insertSymbol) \
1161 SymI_HasProto(lookupSymbol) \
1162 SymI_HasProto(stg_makeStablePtrzh) \
1163 SymI_HasProto(stg_mkApUpd0zh) \
1164 SymI_HasProto(stg_myThreadIdzh) \
1165 SymI_HasProto(stg_labelThreadzh) \
1166 SymI_HasProto(stg_newArrayzh) \
1167 SymI_HasProto(stg_copyArrayzh) \
1168 SymI_HasProto(stg_copyMutableArrayzh) \
1169 SymI_HasProto(stg_copyArrayArrayzh) \
1170 SymI_HasProto(stg_copyMutableArrayArrayzh) \
1171 SymI_HasProto(stg_cloneArrayzh) \
1172 SymI_HasProto(stg_cloneMutableArrayzh) \
1173 SymI_HasProto(stg_freezzeArrayzh) \
1174 SymI_HasProto(stg_thawArrayzh) \
1175 SymI_HasProto(stg_newArrayArrayzh) \
1176 SymI_HasProto(stg_casArrayzh) \
1177 SymI_HasProto(stg_newSmallArrayzh) \
1178 SymI_HasProto(stg_unsafeThawSmallArrayzh) \
1179 SymI_HasProto(stg_cloneSmallArrayzh) \
1180 SymI_HasProto(stg_cloneSmallMutableArrayzh) \
1181 SymI_HasProto(stg_freezzeSmallArrayzh) \
1182 SymI_HasProto(stg_thawSmallArrayzh) \
1183 SymI_HasProto(stg_copySmallArrayzh) \
1184 SymI_HasProto(stg_copySmallMutableArrayzh) \
1185 SymI_HasProto(stg_casSmallArrayzh) \
1186 SymI_HasProto(stg_newBCOzh) \
1187 SymI_HasProto(stg_newByteArrayzh) \
1188 SymI_HasProto(stg_casIntArrayzh) \
1189 SymI_HasProto(stg_newMVarzh) \
1190 SymI_HasProto(stg_newMutVarzh) \
1191 SymI_HasProto(stg_newTVarzh) \
1192 SymI_HasProto(stg_noDuplicatezh) \
1193 SymI_HasProto(stg_atomicModifyMutVarzh) \
1194 SymI_HasProto(stg_casMutVarzh) \
1195 SymI_HasProto(stg_newPinnedByteArrayzh) \
1196 SymI_HasProto(stg_newAlignedPinnedByteArrayzh) \
1197 SymI_HasProto(stg_shrinkMutableByteArrayzh) \
1198 SymI_HasProto(stg_resizzeMutableByteArrayzh) \
1199 SymI_HasProto(newSpark) \
1200 SymI_HasProto(performGC) \
1201 SymI_HasProto(performMajorGC) \
1202 SymI_HasProto(prog_argc) \
1203 SymI_HasProto(prog_argv) \
1204 SymI_HasProto(stg_putMVarzh) \
1205 SymI_HasProto(stg_raisezh) \
1206 SymI_HasProto(stg_raiseIOzh) \
1207 SymI_HasProto(stg_readTVarzh) \
1208 SymI_HasProto(stg_readTVarIOzh) \
1209 SymI_HasProto(resumeThread) \
1210 SymI_HasProto(setNumCapabilities) \
1211 SymI_HasProto(getNumberOfProcessors) \
1212 SymI_HasProto(resolveObjs) \
1213 SymI_HasProto(stg_retryzh) \
1214 SymI_HasProto(rts_apply) \
1215 SymI_HasProto(rts_checkSchedStatus) \
1216 SymI_HasProto(rts_eval) \
1217 SymI_HasProto(rts_evalIO) \
1218 SymI_HasProto(rts_evalLazyIO) \
1219 SymI_HasProto(rts_evalStableIO) \
1220 SymI_HasProto(rts_eval_) \
1221 SymI_HasProto(rts_getBool) \
1222 SymI_HasProto(rts_getChar) \
1223 SymI_HasProto(rts_getDouble) \
1224 SymI_HasProto(rts_getFloat) \
1225 SymI_HasProto(rts_getInt) \
1226 SymI_HasProto(rts_getInt8) \
1227 SymI_HasProto(rts_getInt16) \
1228 SymI_HasProto(rts_getInt32) \
1229 SymI_HasProto(rts_getInt64) \
1230 SymI_HasProto(rts_getPtr) \
1231 SymI_HasProto(rts_getFunPtr) \
1232 SymI_HasProto(rts_getStablePtr) \
1233 SymI_HasProto(rts_getThreadId) \
1234 SymI_HasProto(rts_getWord) \
1235 SymI_HasProto(rts_getWord8) \
1236 SymI_HasProto(rts_getWord16) \
1237 SymI_HasProto(rts_getWord32) \
1238 SymI_HasProto(rts_getWord64) \
1239 SymI_HasProto(rts_lock) \
1240 SymI_HasProto(rts_mkBool) \
1241 SymI_HasProto(rts_mkChar) \
1242 SymI_HasProto(rts_mkDouble) \
1243 SymI_HasProto(rts_mkFloat) \
1244 SymI_HasProto(rts_mkInt) \
1245 SymI_HasProto(rts_mkInt8) \
1246 SymI_HasProto(rts_mkInt16) \
1247 SymI_HasProto(rts_mkInt32) \
1248 SymI_HasProto(rts_mkInt64) \
1249 SymI_HasProto(rts_mkPtr) \
1250 SymI_HasProto(rts_mkFunPtr) \
1251 SymI_HasProto(rts_mkStablePtr) \
1252 SymI_HasProto(rts_mkString) \
1253 SymI_HasProto(rts_mkWord) \
1254 SymI_HasProto(rts_mkWord8) \
1255 SymI_HasProto(rts_mkWord16) \
1256 SymI_HasProto(rts_mkWord32) \
1257 SymI_HasProto(rts_mkWord64) \
1258 SymI_HasProto(rts_unlock) \
1259 SymI_HasProto(rts_unsafeGetMyCapability) \
1260 SymI_HasProto(rtsSupportsBoundThreads) \
1261 SymI_HasProto(rts_isProfiled) \
1262 SymI_HasProto(rts_isDynamic) \
1263 SymI_HasProto(setProgArgv) \
1264 SymI_HasProto(startupHaskell) \
1265 SymI_HasProto(shutdownHaskell) \
1266 SymI_HasProto(shutdownHaskellAndExit) \
1267 SymI_HasProto(stable_name_table) \
1268 SymI_HasProto(stable_ptr_table) \
1269 SymI_HasProto(stackOverflow) \
1270 SymI_HasProto(stg_CAF_BLACKHOLE_info) \
1271 SymI_HasProto(stg_BLACKHOLE_info) \
1272 SymI_HasProto(__stg_EAGER_BLACKHOLE_info) \
1273 SymI_HasProto(stg_BLOCKING_QUEUE_CLEAN_info) \
1274 SymI_HasProto(stg_BLOCKING_QUEUE_DIRTY_info) \
1275 SymI_HasProto(startTimer) \
1276 SymI_HasProto(stg_MVAR_CLEAN_info) \
1277 SymI_HasProto(stg_MVAR_DIRTY_info) \
1278 SymI_HasProto(stg_TVAR_CLEAN_info) \
1279 SymI_HasProto(stg_TVAR_DIRTY_info) \
1280 SymI_HasProto(stg_IND_STATIC_info) \
1281 SymI_HasProto(stg_ARR_WORDS_info) \
1282 SymI_HasProto(stg_MUT_ARR_PTRS_DIRTY_info) \
1283 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN_info) \
1284 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN0_info) \
1285 SymI_HasProto(stg_SMALL_MUT_ARR_PTRS_DIRTY_info) \
1286 SymI_HasProto(stg_SMALL_MUT_ARR_PTRS_FROZEN_info) \
1287 SymI_HasProto(stg_SMALL_MUT_ARR_PTRS_FROZEN0_info) \
1288 SymI_HasProto(stg_MUT_VAR_CLEAN_info) \
1289 SymI_HasProto(stg_MUT_VAR_DIRTY_info) \
1290 SymI_HasProto(stg_WEAK_info) \
1291 SymI_HasProto(stg_ap_v_info) \
1292 SymI_HasProto(stg_ap_f_info) \
1293 SymI_HasProto(stg_ap_d_info) \
1294 SymI_HasProto(stg_ap_l_info) \
1295 SymI_HasProto(stg_ap_v16_info) \
1296 SymI_HasProto(stg_ap_v32_info) \
1297 SymI_HasProto(stg_ap_v64_info) \
1298 SymI_HasProto(stg_ap_n_info) \
1299 SymI_HasProto(stg_ap_p_info) \
1300 SymI_HasProto(stg_ap_pv_info) \
1301 SymI_HasProto(stg_ap_pp_info) \
1302 SymI_HasProto(stg_ap_ppv_info) \
1303 SymI_HasProto(stg_ap_ppp_info) \
1304 SymI_HasProto(stg_ap_pppv_info) \
1305 SymI_HasProto(stg_ap_pppp_info) \
1306 SymI_HasProto(stg_ap_ppppp_info) \
1307 SymI_HasProto(stg_ap_pppppp_info) \
1308 SymI_HasProto(stg_ap_0_fast) \
1309 SymI_HasProto(stg_ap_v_fast) \
1310 SymI_HasProto(stg_ap_f_fast) \
1311 SymI_HasProto(stg_ap_d_fast) \
1312 SymI_HasProto(stg_ap_l_fast) \
1313 SymI_HasProto(stg_ap_v16_fast) \
1314 SymI_HasProto(stg_ap_v32_fast) \
1315 SymI_HasProto(stg_ap_v64_fast) \
1316 SymI_HasProto(stg_ap_n_fast) \
1317 SymI_HasProto(stg_ap_p_fast) \
1318 SymI_HasProto(stg_ap_pv_fast) \
1319 SymI_HasProto(stg_ap_pp_fast) \
1320 SymI_HasProto(stg_ap_ppv_fast) \
1321 SymI_HasProto(stg_ap_ppp_fast) \
1322 SymI_HasProto(stg_ap_pppv_fast) \
1323 SymI_HasProto(stg_ap_pppp_fast) \
1324 SymI_HasProto(stg_ap_ppppp_fast) \
1325 SymI_HasProto(stg_ap_pppppp_fast) \
1326 SymI_HasProto(stg_ap_1_upd_info) \
1327 SymI_HasProto(stg_ap_2_upd_info) \
1328 SymI_HasProto(stg_ap_3_upd_info) \
1329 SymI_HasProto(stg_ap_4_upd_info) \
1330 SymI_HasProto(stg_ap_5_upd_info) \
1331 SymI_HasProto(stg_ap_6_upd_info) \
1332 SymI_HasProto(stg_ap_7_upd_info) \
1333 SymI_HasProto(stg_exit) \
1334 SymI_HasProto(stg_sel_0_upd_info) \
1335 SymI_HasProto(stg_sel_1_upd_info) \
1336 SymI_HasProto(stg_sel_2_upd_info) \
1337 SymI_HasProto(stg_sel_3_upd_info) \
1338 SymI_HasProto(stg_sel_4_upd_info) \
1339 SymI_HasProto(stg_sel_5_upd_info) \
1340 SymI_HasProto(stg_sel_6_upd_info) \
1341 SymI_HasProto(stg_sel_7_upd_info) \
1342 SymI_HasProto(stg_sel_8_upd_info) \
1343 SymI_HasProto(stg_sel_9_upd_info) \
1344 SymI_HasProto(stg_sel_10_upd_info) \
1345 SymI_HasProto(stg_sel_11_upd_info) \
1346 SymI_HasProto(stg_sel_12_upd_info) \
1347 SymI_HasProto(stg_sel_13_upd_info) \
1348 SymI_HasProto(stg_sel_14_upd_info) \
1349 SymI_HasProto(stg_sel_15_upd_info) \
1350 SymI_HasProto(stg_sel_0_noupd_info) \
1351 SymI_HasProto(stg_sel_1_noupd_info) \
1352 SymI_HasProto(stg_sel_2_noupd_info) \
1353 SymI_HasProto(stg_sel_3_noupd_info) \
1354 SymI_HasProto(stg_sel_4_noupd_info) \
1355 SymI_HasProto(stg_sel_5_noupd_info) \
1356 SymI_HasProto(stg_sel_6_noupd_info) \
1357 SymI_HasProto(stg_sel_7_noupd_info) \
1358 SymI_HasProto(stg_sel_8_noupd_info) \
1359 SymI_HasProto(stg_sel_9_noupd_info) \
1360 SymI_HasProto(stg_sel_10_noupd_info) \
1361 SymI_HasProto(stg_sel_11_noupd_info) \
1362 SymI_HasProto(stg_sel_12_noupd_info) \
1363 SymI_HasProto(stg_sel_13_noupd_info) \
1364 SymI_HasProto(stg_sel_14_noupd_info) \
1365 SymI_HasProto(stg_sel_15_noupd_info) \
1366 SymI_HasProto(stg_upd_frame_info) \
1367 SymI_HasProto(stg_bh_upd_frame_info) \
1368 SymI_HasProto(suspendThread) \
1369 SymI_HasProto(stg_takeMVarzh) \
1370 SymI_HasProto(stg_readMVarzh) \
1371 SymI_HasProto(stg_threadStatuszh) \
1372 SymI_HasProto(stg_tryPutMVarzh) \
1373 SymI_HasProto(stg_tryTakeMVarzh) \
1374 SymI_HasProto(stg_tryReadMVarzh) \
1375 SymI_HasProto(stg_unmaskAsyncExceptionszh) \
1376 SymI_HasProto(unloadObj) \
1377 SymI_HasProto(stg_unsafeThawArrayzh) \
1378 SymI_HasProto(stg_waitReadzh) \
1379 SymI_HasProto(stg_waitWritezh) \
1380 SymI_HasProto(stg_writeTVarzh) \
1381 SymI_HasProto(stg_yieldzh) \
1382 SymI_NeedsProto(stg_interp_constr_entry) \
1383 SymI_HasProto(stg_arg_bitmaps) \
1384 SymI_HasProto(large_alloc_lim) \
1385 SymI_HasProto(g0) \
1386 SymI_HasProto(allocate) \
1387 SymI_HasProto(allocateExec) \
1388 SymI_HasProto(flushExec) \
1389 SymI_HasProto(freeExec) \
1390 SymI_HasProto(getAllocations) \
1391 SymI_HasProto(revertCAFs) \
1392 SymI_HasProto(RtsFlags) \
1393 SymI_NeedsProto(rts_breakpoint_io_action) \
1394 SymI_NeedsProto(rts_stop_next_breakpoint) \
1395 SymI_NeedsProto(rts_stop_on_exception) \
1396 SymI_HasProto(stopTimer) \
1397 SymI_HasProto(n_capabilities) \
1398 SymI_HasProto(enabled_capabilities) \
1399 SymI_HasProto(stg_traceCcszh) \
1400 SymI_HasProto(stg_traceEventzh) \
1401 SymI_HasProto(stg_traceMarkerzh) \
1402 SymI_HasProto(getMonotonicNSec) \
1403 SymI_HasProto(lockFile) \
1404 SymI_HasProto(unlockFile) \
1405 SymI_HasProto(startProfTimer) \
1406 SymI_HasProto(stopProfTimer) \
1407 SymI_HasProto(atomic_inc) \
1408 SymI_HasProto(atomic_dec) \
1409 RTS_USER_SIGNALS_SYMBOLS \
1410 RTS_INTCHAR_SYMBOLS
1411
1412
1413 // 64-bit support functions in libgcc.a
1414 #if defined(__GNUC__) && SIZEOF_VOID_P <= 4 && !defined(_ABIN32)
1415 #define RTS_LIBGCC_SYMBOLS \
1416 SymI_NeedsProto(__divdi3) \
1417 SymI_NeedsProto(__udivdi3) \
1418 SymI_NeedsProto(__moddi3) \
1419 SymI_NeedsProto(__umoddi3) \
1420 SymI_NeedsProto(__muldi3) \
1421 SymI_NeedsProto(__ashldi3) \
1422 SymI_NeedsProto(__ashrdi3) \
1423 SymI_NeedsProto(__lshrdi3) \
1424 SymI_NeedsProto(__fixunsdfdi)
1425 #else
1426 #define RTS_LIBGCC_SYMBOLS
1427 #endif
1428
1429 #if defined(darwin_HOST_OS) && defined(powerpc_HOST_ARCH)
1430 // Symbols that don't have a leading underscore
1431 // on Mac OS X. They have to receive special treatment,
1432 // see machoInitSymbolsWithoutUnderscore()
1433 #define RTS_MACHO_NOUNDERLINE_SYMBOLS \
1434 SymI_NeedsProto(saveFP) \
1435 SymI_NeedsProto(restFP)
1436 #endif
1437
1438 /* entirely bogus claims about types of these symbols */
1439 #define SymI_NeedsProto(vvv) extern void vvv(void);
1440 #if defined(COMPILING_WINDOWS_DLL)
1441 #define SymE_HasProto(vvv) SymE_HasProto(vvv);
1442 # if defined(x86_64_HOST_ARCH)
1443 # define SymE_NeedsProto(vvv) extern void __imp_ ## vvv (void);
1444 # else
1445 # define SymE_NeedsProto(vvv) extern void _imp__ ## vvv (void);
1446 # endif
1447 #else
1448 #define SymE_NeedsProto(vvv) SymI_NeedsProto(vvv);
1449 #define SymE_HasProto(vvv) SymI_HasProto(vvv)
1450 #endif
1451 #define SymI_HasProto(vvv) /**/
1452 #define SymI_HasProto_redirect(vvv,xxx) /**/
1453 RTS_SYMBOLS
1454 RTS_RET_SYMBOLS
1455 RTS_POSIX_ONLY_SYMBOLS
1456 RTS_MINGW_ONLY_SYMBOLS
1457 RTS_CYGWIN_ONLY_SYMBOLS
1458 RTS_DARWIN_ONLY_SYMBOLS
1459 RTS_LIBGCC_SYMBOLS
1460 RTS_LIBFFI_SYMBOLS
1461 #undef SymI_NeedsProto
1462 #undef SymI_HasProto
1463 #undef SymI_HasProto_redirect
1464 #undef SymE_HasProto
1465 #undef SymE_NeedsProto
1466
1467 #ifdef LEADING_UNDERSCORE
1468 #define MAYBE_LEADING_UNDERSCORE_STR(s) ("_" s)
1469 #else
1470 #define MAYBE_LEADING_UNDERSCORE_STR(s) (s)
1471 #endif
1472
1473 #define SymI_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1474 (void*)(&(vvv)) },
1475 #define SymE_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1476 (void*)DLL_IMPORT_DATA_REF(vvv) },
1477
1478 #define SymI_NeedsProto(vvv) SymI_HasProto(vvv)
1479 #define SymE_NeedsProto(vvv) SymE_HasProto(vvv)
1480
1481 // SymI_HasProto_redirect allows us to redirect references to one symbol to
1482 // another symbol. See newCAF/newDynCAF for an example.
1483 #define SymI_HasProto_redirect(vvv,xxx) \
1484 { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1485 (void*)(&(xxx)) },
1486
1487 static RtsSymbolVal rtsSyms[] = {
1488 RTS_SYMBOLS
1489 RTS_RET_SYMBOLS
1490 RTS_POSIX_ONLY_SYMBOLS
1491 RTS_MINGW_ONLY_SYMBOLS
1492 RTS_CYGWIN_ONLY_SYMBOLS
1493 RTS_DARWIN_ONLY_SYMBOLS
1494 RTS_LIBGCC_SYMBOLS
1495 RTS_LIBFFI_SYMBOLS
1496 #if defined(darwin_HOST_OS) && defined(i386_HOST_ARCH)
1497 // dyld stub code contains references to this,
1498 // but it should never be called because we treat
1499 // lazy pointers as nonlazy.
1500 { "dyld_stub_binding_helper", (void*)0xDEADBEEF },
1501 #endif
1502 { 0, 0 } /* sentinel */
1503 };
1504
1505
1506 /* -----------------------------------------------------------------------------
1507 * Insert symbols into hash tables, checking for duplicates.
1508 */
1509
1510 static void ghciInsertSymbolTable(
1511 pathchar* obj_name,
1512 HashTable *table,
1513 char* key,
1514 void *data,
1515 HsBool weak,
1516 ObjectCode *owner)
1517 {
1518 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1519 if (!pinfo) /* new entry */
1520 {
1521 pinfo = stgMallocBytes(sizeof (*pinfo), "ghciInsertToSymbolTable");
1522 pinfo->value = data;
1523 pinfo->owner = owner;
1524 pinfo->weak = weak;
1525 insertStrHashTable(table, key, pinfo);
1526 return;
1527 } else if ((!pinfo->weak || pinfo->value) && weak) {
1528 return; /* duplicate weak symbol, throw it away */
1529 } else if (pinfo->weak) /* weak symbol is in the table */
1530 {
1531 /* override the weak definition with the non-weak one */
1532 pinfo->value = data;
1533 pinfo->owner = owner;
1534 pinfo->weak = HS_BOOL_FALSE;
1535 return;
1536 }
1537 debugBelch(
1538 "\n\n"
1539 "GHCi runtime linker: fatal error: I found a duplicate definition for symbol\n"
1540 " %s\n"
1541 "whilst processing object file\n"
1542 " %" PATH_FMT "\n"
1543 "This could be caused by:\n"
1544 " * Loading two different object files which export the same symbol\n"
1545 " * Specifying the same object file twice on the GHCi command line\n"
1546 " * An incorrect `package.conf' entry, causing some object to be\n"
1547 " loaded twice.\n"
1548 "GHCi cannot safely continue in this situation. Exiting now. Sorry.\n"
1549 "\n",
1550 (char*)key,
1551 obj_name
1552 );
1553 stg_exit(1);
1554 }
1555
1556 static HsBool ghciLookupSymbolTable(HashTable *table,
1557 const char *key, void **result)
1558 {
1559 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1560 if (!pinfo) {
1561 *result = NULL;
1562 return HS_BOOL_FALSE;
1563 }
1564 if (pinfo->weak)
1565 IF_DEBUG(linker, debugBelch("lookup: promoting %s\n", key));
1566 /* Once it's looked up, it can no longer be overridden */
1567 pinfo->weak = HS_BOOL_FALSE;
1568
1569 *result = pinfo->value;
1570 return HS_BOOL_TRUE;
1571 }
1572
1573 static void ghciRemoveSymbolTable(HashTable *table, const char *key,
1574 ObjectCode *owner)
1575 {
1576 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1577 if (!pinfo || owner != pinfo->owner) return;
1578 removeStrHashTable(table, key, NULL);
1579 stgFree(pinfo);
1580 }
1581 /* -----------------------------------------------------------------------------
1582 * initialize the object linker
1583 */
1584
1585
1586 static int linker_init_done = 0 ;
1587
1588 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1589 static void *dl_prog_handle;
1590 static regex_t re_invalid;
1591 static regex_t re_realso;
1592 #ifdef THREADED_RTS
1593 static Mutex dl_mutex; // mutex to protect dlopen/dlerror critical section
1594 #endif
1595 #elif defined(OBJFORMAT_PEi386)
1596 void addDLLHandle(pathchar* dll_name, HINSTANCE instance);
1597 #endif
1598
1599 void initLinker (void)
1600 {
1601 // default to retaining CAFs for backwards compatibility. Most
1602 // users will want initLinker_(0): otherwise unloadObj() will not
1603 // be able to unload object files when they contain CAFs.
1604 initLinker_(1);
1605 }
1606
1607 void
1608 initLinker_ (int retain_cafs)
1609 {
1610 RtsSymbolVal *sym;
1611 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1612 int compileResult;
1613 #endif
1614
1615 IF_DEBUG(linker, debugBelch("initLinker: start\n"));
1616
1617 /* Make initLinker idempotent, so we can call it
1618 before every relevant operation; that means we
1619 don't need to initialise the linker separately */
1620 if (linker_init_done == 1) {
1621 IF_DEBUG(linker, debugBelch("initLinker: idempotent return\n"));
1622 return;
1623 } else {
1624 linker_init_done = 1;
1625 }
1626
1627 objects = NULL;
1628 unloaded_objects = NULL;
1629
1630 #if defined(THREADED_RTS) && (defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO))
1631 initMutex(&dl_mutex);
1632 #endif
1633 symhash = allocStrHashTable();
1634
1635 /* populate the symbol table with stuff from the RTS */
1636 for (sym = rtsSyms; sym->lbl != NULL; sym++) {
1637 ghciInsertSymbolTable(WSTR("(GHCi built-in symbols)"),
1638 symhash, sym->lbl, sym->addr, HS_BOOL_FALSE, NULL);
1639 IF_DEBUG(linker, debugBelch("initLinker: inserting rts symbol %s, %p\n", sym->lbl, sym->addr));
1640 }
1641 # if defined(OBJFORMAT_MACHO) && defined(powerpc_HOST_ARCH)
1642 machoInitSymbolsWithoutUnderscore();
1643 # endif
1644 /* GCC defines a special symbol __dso_handle which is resolved to NULL if
1645 referenced from a statically linked module. We need to mimic this, but
1646 we cannot use NULL because we use it to mean nonexistent symbols. So we
1647 use an arbitrary (hopefully unique) address here.
1648 */
1649 ghciInsertSymbolTable(WSTR("(GHCi special symbols)"),
1650 symhash, "__dso_handle", (void *)0x12345687, HS_BOOL_FALSE, NULL);
1651
1652 // Redurect newCAF to newDynCAF if retain_cafs is true.
1653 ghciInsertSymbolTable(WSTR("(GHCi built-in symbols)"), symhash,
1654 MAYBE_LEADING_UNDERSCORE_STR("newCAF"),
1655 retain_cafs ? newDynCAF : newCAF,
1656 HS_BOOL_FALSE, NULL);
1657
1658 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1659 # if defined(RTLD_DEFAULT)
1660 dl_prog_handle = RTLD_DEFAULT;
1661 # else
1662 dl_prog_handle = dlopen(NULL, RTLD_LAZY);
1663 # endif /* RTLD_DEFAULT */
1664
1665 compileResult = regcomp(&re_invalid,
1666 "(([^ \t()])+\\.so([^ \t:()])*):([ \t])*(invalid ELF header|file too short)",
1667 REG_EXTENDED);
1668 if (compileResult != 0) {
1669 barf("Compiling re_invalid failed");
1670 }
1671 compileResult = regcomp(&re_realso,
1672 "(GROUP|INPUT) *\\( *([^ )]+)",
1673 REG_EXTENDED);
1674 if (compileResult != 0) {
1675 barf("Compiling re_realso failed");
1676 }
1677 # endif
1678
1679 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1680 if (RtsFlags.MiscFlags.linkerMemBase != 0) {
1681 // User-override for mmap_32bit_base
1682 mmap_32bit_base = (void*)RtsFlags.MiscFlags.linkerMemBase;
1683 }
1684 #endif
1685
1686 #if defined(mingw32_HOST_OS)
1687 /*
1688 * These two libraries cause problems when added to the static link,
1689 * but are necessary for resolving symbols in GHCi, hence we load
1690 * them manually here.
1691 */
1692 addDLL(WSTR("msvcrt"));
1693 addDLL(WSTR("kernel32"));
1694 addDLLHandle(WSTR("*.exe"), GetModuleHandle(NULL));
1695 #endif
1696
1697 IF_DEBUG(linker, debugBelch("initLinker: done\n"));
1698 return;
1699 }
1700
1701 void
1702 exitLinker( void ) {
1703 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1704 if (linker_init_done == 1) {
1705 regfree(&re_invalid);
1706 regfree(&re_realso);
1707 #ifdef THREADED_RTS
1708 closeMutex(&dl_mutex);
1709 #endif
1710 }
1711 #endif
1712 }
1713
1714 /* -----------------------------------------------------------------------------
1715 * Loading DLL or .so dynamic libraries
1716 * -----------------------------------------------------------------------------
1717 *
1718 * Add a DLL from which symbols may be found. In the ELF case, just
1719 * do RTLD_GLOBAL-style add, so no further messing around needs to
1720 * happen in order that symbols in the loaded .so are findable --
1721 * lookupSymbol() will subsequently see them by dlsym on the program's
1722 * dl-handle. Returns NULL if success, otherwise ptr to an err msg.
1723 *
1724 * In the PEi386 case, open the DLLs and put handles to them in a
1725 * linked list. When looking for a symbol, try all handles in the
1726 * list. This means that we need to load even DLLs that are guaranteed
1727 * to be in the ghc.exe image already, just so we can get a handle
1728 * to give to loadSymbol, so that we can find the symbols. For such
1729 * libraries, the LoadLibrary call should be a no-op except for returning
1730 * the handle.
1731 *
1732 */
1733
1734 #if defined(OBJFORMAT_PEi386)
1735 /* A record for storing handles into DLLs. */
1736
1737 typedef
1738 struct _OpenedDLL {
1739 pathchar* name;
1740 struct _OpenedDLL* next;
1741 HINSTANCE instance;
1742 }
1743 OpenedDLL;
1744
1745 /* A list thereof. */
1746 static OpenedDLL* opened_dlls = NULL;
1747
1748 /* A record for storing indirectly linked functions from DLLs. */
1749 typedef
1750 struct _IndirectAddr {
1751 void* addr;
1752 struct _IndirectAddr* next;
1753 }
1754 IndirectAddr;
1755
1756 /* A list thereof. */
1757 static IndirectAddr* indirects = NULL;
1758
1759 /* Adds a DLL instance to the list of DLLs in which to search for symbols. */
1760 void addDLLHandle(pathchar* dll_name, HINSTANCE instance) {
1761 OpenedDLL* o_dll;
1762 o_dll = stgMallocBytes( sizeof(OpenedDLL), "addDLLHandle" );
1763 o_dll->name = dll_name ? pathdup(dll_name) : NULL;
1764 o_dll->instance = instance;
1765 o_dll->next = opened_dlls;
1766 opened_dlls = o_dll;
1767 }
1768
1769 #endif
1770
1771 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1772
1773 /* Suppose in ghci we load a temporary SO for a module containing
1774 f = 1
1775 and then modify the module, recompile, and load another temporary
1776 SO with
1777 f = 2
1778 Then as we don't unload the first SO, dlsym will find the
1779 f = 1
1780 symbol whereas we want the
1781 f = 2
1782 symbol. We therefore need to keep our own SO handle list, and
1783 try SOs in the right order. */
1784
1785 typedef
1786 struct _OpenedSO {
1787 struct _OpenedSO* next;
1788 void *handle;
1789 }
1790 OpenedSO;
1791
1792 /* A list thereof. */
1793 static OpenedSO* openedSOs = NULL;
1794
1795 static const char *
1796 internal_dlopen(const char *dll_name)
1797 {
1798 OpenedSO* o_so;
1799 void *hdl;
1800 const char *errmsg;
1801 char *errmsg_copy;
1802
1803 // omitted: RTLD_NOW
1804 // see http://www.haskell.org/pipermail/cvs-ghc/2007-September/038570.html
1805 IF_DEBUG(linker,
1806 debugBelch("internal_dlopen: dll_name = '%s'\n", dll_name));
1807
1808 //-------------- Begin critical section ------------------
1809 // This critical section is necessary because dlerror() is not
1810 // required to be reentrant (see POSIX -- IEEE Std 1003.1-2008)
1811 // Also, the error message returned must be copied to preserve it
1812 // (see POSIX also)
1813
1814 ACQUIRE_LOCK(&dl_mutex);
1815 hdl = dlopen(dll_name, RTLD_LAZY | RTLD_GLOBAL);
1816
1817 errmsg = NULL;
1818 if (hdl == NULL) {
1819 /* dlopen failed; return a ptr to the error msg. */
1820 errmsg = dlerror();
1821 if (errmsg == NULL) errmsg = "addDLL: unknown error";
1822 errmsg_copy = stgMallocBytes(strlen(errmsg)+1, "addDLL");
1823 strcpy(errmsg_copy, errmsg);
1824 errmsg = errmsg_copy;
1825 }
1826 o_so = stgMallocBytes(sizeof(OpenedSO), "addDLL");
1827 o_so->handle = hdl;
1828 o_so->next = openedSOs;
1829 openedSOs = o_so;
1830
1831 RELEASE_LOCK(&dl_mutex);
1832 //--------------- End critical section -------------------
1833
1834 return errmsg;
1835 }
1836
1837 static void *
1838 internal_dlsym(void *hdl, const char *symbol) {
1839 OpenedSO* o_so;
1840 void *v;
1841
1842 // We acquire dl_mutex as concurrent dl* calls may alter dlerror
1843 ACQUIRE_LOCK(&dl_mutex);
1844 dlerror();
1845 for (o_so = openedSOs; o_so != NULL; o_so = o_so->next) {
1846 v = dlsym(o_so->handle, symbol);
1847 if (dlerror() == NULL) {
1848 RELEASE_LOCK(&dl_mutex);
1849 return v;
1850 }
1851 }
1852 v = dlsym(hdl, symbol);
1853 RELEASE_LOCK(&dl_mutex);
1854 return v;
1855 }
1856 # endif
1857
1858 const char *
1859 addDLL( pathchar *dll_name )
1860 {
1861 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1862 /* ------------------- ELF DLL loader ------------------- */
1863
1864 #define NMATCH 5
1865 regmatch_t match[NMATCH];
1866 const char *errmsg;
1867 FILE* fp;
1868 size_t match_length;
1869 #define MAXLINE 1000
1870 char line[MAXLINE];
1871 int result;
1872
1873 initLinker();
1874
1875 IF_DEBUG(linker, debugBelch("addDLL: dll_name = '%s'\n", dll_name));
1876 errmsg = internal_dlopen(dll_name);
1877
1878 if (errmsg == NULL) {
1879 return NULL;
1880 }
1881
1882 // GHC Trac ticket #2615
1883 // On some systems (e.g., Gentoo Linux) dynamic files (e.g. libc.so)
1884 // contain linker scripts rather than ELF-format object code. This
1885 // code handles the situation by recognizing the real object code
1886 // file name given in the linker script.
1887 //
1888 // If an "invalid ELF header" error occurs, it is assumed that the
1889 // .so file contains a linker script instead of ELF object code.
1890 // In this case, the code looks for the GROUP ( ... ) linker
1891 // directive. If one is found, the first file name inside the
1892 // parentheses is treated as the name of a dynamic library and the
1893 // code attempts to dlopen that file. If this is also unsuccessful,
1894 // an error message is returned.
1895
1896 // see if the error message is due to an invalid ELF header
1897 IF_DEBUG(linker, debugBelch("errmsg = '%s'\n", errmsg));
1898 result = regexec(&re_invalid, errmsg, (size_t) NMATCH, match, 0);
1899 IF_DEBUG(linker, debugBelch("result = %i\n", result));
1900 if (result == 0) {
1901 // success -- try to read the named file as a linker script
1902 match_length = (size_t) stg_min((match[1].rm_eo - match[1].rm_so),
1903 MAXLINE-1);
1904 strncpy(line, (errmsg+(match[1].rm_so)),match_length);
1905 line[match_length] = '\0'; // make sure string is null-terminated
1906 IF_DEBUG(linker, debugBelch ("file name = '%s'\n", line));
1907 if ((fp = fopen(line, "r")) == NULL) {
1908 return errmsg; // return original error if open fails
1909 }
1910 // try to find a GROUP or INPUT ( ... ) command
1911 while (fgets(line, MAXLINE, fp) != NULL) {
1912 IF_DEBUG(linker, debugBelch("input line = %s", line));
1913 if (regexec(&re_realso, line, (size_t) NMATCH, match, 0) == 0) {
1914 // success -- try to dlopen the first named file
1915 IF_DEBUG(linker, debugBelch("match%s\n",""));
1916 line[match[2].rm_eo] = '\0';
1917 stgFree((void*)errmsg); // Free old message before creating new one
1918 errmsg = internal_dlopen(line+match[2].rm_so);
1919 break;
1920 }
1921 // if control reaches here, no GROUP or INPUT ( ... ) directive
1922 // was found and the original error message is returned to the
1923 // caller
1924 }
1925 fclose(fp);
1926 }
1927 return errmsg;
1928
1929 # elif defined(OBJFORMAT_PEi386)
1930 /* ------------------- Win32 DLL loader ------------------- */
1931
1932 pathchar* buf;
1933 OpenedDLL* o_dll;
1934 HINSTANCE instance;
1935
1936 initLinker();
1937
1938 /* debugBelch("\naddDLL; dll_name = `%s'\n", dll_name); */
1939
1940 /* See if we've already got it, and ignore if so. */
1941 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
1942 if (0 == pathcmp(o_dll->name, dll_name))
1943 return NULL;
1944 }
1945
1946 /* The file name has no suffix (yet) so that we can try
1947 both foo.dll and foo.drv
1948
1949 The documentation for LoadLibrary says:
1950 If no file name extension is specified in the lpFileName
1951 parameter, the default library extension .dll is
1952 appended. However, the file name string can include a trailing
1953 point character (.) to indicate that the module name has no
1954 extension. */
1955
1956 buf = stgMallocBytes((pathlen(dll_name) + 10) * sizeof(wchar_t), "addDLL");
1957 swprintf(buf, L"%s.DLL", dll_name);
1958 instance = LoadLibraryW(buf);
1959 if (instance == NULL) {
1960 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1961 // KAA: allow loading of drivers (like winspool.drv)
1962 swprintf(buf, L"%s.DRV", dll_name);
1963 instance = LoadLibraryW(buf);
1964 if (instance == NULL) {
1965 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1966 // #1883: allow loading of unix-style libfoo.dll DLLs
1967 swprintf(buf, L"lib%s.DLL", dll_name);
1968 instance = LoadLibraryW(buf);
1969 if (instance == NULL) {
1970 goto error;
1971 }
1972 }
1973 }
1974 stgFree(buf);
1975
1976 addDLLHandle(dll_name, instance);
1977
1978 return NULL;
1979
1980 error:
1981 stgFree(buf);
1982 sysErrorBelch("%" PATH_FMT, dll_name);
1983
1984 /* LoadLibrary failed; return a ptr to the error msg. */
1985 return "addDLL: could not load DLL";
1986
1987 # else
1988 barf("addDLL: not implemented on this platform");
1989 # endif
1990 }
1991
1992 /* -----------------------------------------------------------------------------
1993 * insert a symbol in the hash table
1994 */
1995 void
1996 insertSymbol(pathchar* obj_name, char* key, void* data)
1997 {
1998 ghciInsertSymbolTable(obj_name, symhash, key, data, HS_BOOL_FALSE, NULL);
1999 }
2000
2001 /* -----------------------------------------------------------------------------
2002 * lookup a symbol in the hash table
2003 */
2004 void *
2005 lookupSymbol( char *lbl )
2006 {
2007 void *val;
2008 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s\n", lbl));
2009 initLinker() ;
2010 ASSERT(symhash != NULL);
2011
2012 if (!ghciLookupSymbolTable(symhash, lbl, &val)) {
2013 IF_DEBUG(linker, debugBelch("lookupSymbol: symbol not found\n"));
2014 # if defined(OBJFORMAT_ELF)
2015 return internal_dlsym(dl_prog_handle, lbl);
2016 # elif defined(OBJFORMAT_MACHO)
2017 # if HAVE_DLFCN_H
2018 /* On OS X 10.3 and later, we use dlsym instead of the old legacy
2019 interface.
2020
2021 HACK: On OS X, all symbols are prefixed with an underscore.
2022 However, dlsym wants us to omit the leading underscore from the
2023 symbol name -- the dlsym routine puts it back on before searching
2024 for the symbol. For now, we simply strip it off here (and ONLY
2025 here).
2026 */
2027 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s with dlsym\n", lbl));
2028 ASSERT(lbl[0] == '_');
2029 return internal_dlsym(dl_prog_handle, lbl + 1);
2030 # else
2031 if (NSIsSymbolNameDefined(lbl)) {
2032 NSSymbol symbol = NSLookupAndBindSymbol(lbl);
2033 return NSAddressOfSymbol(symbol);
2034 } else {
2035 return NULL;
2036 }
2037 # endif /* HAVE_DLFCN_H */
2038 # elif defined(OBJFORMAT_PEi386)
2039 void* sym;
2040
2041 sym = lookupSymbolInDLLs((unsigned char*)lbl);
2042 if (sym != NULL) { return sym; };
2043
2044 // Also try looking up the symbol without the @N suffix. Some
2045 // DLLs have the suffixes on their symbols, some don't.
2046 zapTrailingAtSign ( (unsigned char*)lbl );
2047 sym = lookupSymbolInDLLs((unsigned char*)lbl);
2048 if (sym != NULL) { return sym; };
2049 return NULL;
2050
2051 # else
2052 ASSERT(2+2 == 5);
2053 return NULL;
2054 # endif
2055 } else {
2056 IF_DEBUG(linker, debugBelch("lookupSymbol: value of %s is %p\n", lbl, val));
2057 return val;
2058 }
2059 }
2060
2061 /* -----------------------------------------------------------------------------
2062 Create a StablePtr for a foreign export. This is normally called by
2063 a C function with __attribute__((constructor)), which is generated
2064 by GHC and linked into the module.
2065
2066 If the object code is being loaded dynamically, then we remember
2067 which StablePtrs were allocated by the constructors and free them
2068 again in unloadObj().
2069 -------------------------------------------------------------------------- */
2070
2071 static ObjectCode *loading_obj = NULL;
2072
2073 StgStablePtr foreignExportStablePtr (StgPtr p)
2074 {
2075 ForeignExportStablePtr *fe_sptr;
2076 StgStablePtr *sptr;
2077
2078 sptr = getStablePtr(p);
2079
2080 if (loading_obj != NULL) {
2081 fe_sptr = stgMallocBytes(sizeof(ForeignExportStablePtr),
2082 "foreignExportStablePtr");
2083 fe_sptr->stable_ptr = sptr;
2084 fe_sptr->next = loading_obj->stable_ptrs;
2085 loading_obj->stable_ptrs = fe_sptr;
2086 }
2087
2088 return sptr;
2089 }
2090
2091
2092 /* -----------------------------------------------------------------------------
2093 * Debugging aid: look in GHCi's object symbol tables for symbols
2094 * within DELTA bytes of the specified address, and show their names.
2095 */
2096 #ifdef DEBUG
2097 void ghci_enquire ( char* addr );
2098
2099 void ghci_enquire ( char* addr )
2100 {
2101 int i;
2102 char* sym;
2103 char* a;
2104 const int DELTA = 64;
2105 ObjectCode* oc;
2106
2107 initLinker();
2108
2109 for (oc = objects; oc; oc = oc->next) {
2110 for (i = 0; i < oc->n_symbols; i++) {
2111 sym = oc->symbols[i];
2112 if (sym == NULL) continue;
2113 a = NULL;
2114 if (a == NULL) {
2115 ghciLookupSymbolTable(symhash, sym, (void **)&a);
2116 }
2117 if (a == NULL) {
2118 // debugBelch("ghci_enquire: can't find %s\n", sym);
2119 }
2120 else if (addr-DELTA <= a && a <= addr+DELTA) {
2121 debugBelch("%p + %3d == `%s'\n", addr, (int)(a - addr), sym);
2122 }
2123 }
2124 }
2125 }
2126 #endif
2127
2128 #ifdef USE_MMAP
2129 #define ROUND_UP(x,size) ((x + size - 1) & ~(size - 1))
2130
2131 static void *
2132 mmapForLinker (size_t bytes, nat flags, int fd)
2133 {
2134 void *map_addr = NULL;
2135 void *result;
2136 int pagesize, size;
2137 static nat fixed = 0;
2138
2139 IF_DEBUG(linker, debugBelch("mmapForLinker: start\n"));
2140 pagesize = getpagesize();
2141 size = ROUND_UP(bytes, pagesize);
2142
2143 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2144 mmap_again:
2145
2146 if (mmap_32bit_base != 0) {
2147 map_addr = mmap_32bit_base;
2148 }
2149 #endif
2150
2151 IF_DEBUG(linker, debugBelch("mmapForLinker: \tprotection %#0x\n", PROT_EXEC | PROT_READ | PROT_WRITE));
2152 IF_DEBUG(linker, debugBelch("mmapForLinker: \tflags %#0x\n", MAP_PRIVATE | TRY_MAP_32BIT | fixed | flags));
2153 result = mmap(map_addr, size, PROT_EXEC|PROT_READ|PROT_WRITE,
2154 MAP_PRIVATE|TRY_MAP_32BIT|fixed|flags, fd, 0);
2155
2156 if (result == MAP_FAILED) {
2157 sysErrorBelch("mmap %" FMT_Word " bytes at %p",(W_)size,map_addr);
2158 errorBelch("Try specifying an address with +RTS -xm<addr> -RTS");
2159 stg_exit(EXIT_FAILURE);
2160 }
2161
2162 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2163 if (mmap_32bit_base != 0) {
2164 if (result == map_addr) {
2165 mmap_32bit_base = (StgWord8*)map_addr + size;
2166 } else {
2167 if ((W_)result > 0x80000000) {
2168 // oops, we were given memory over 2Gb
2169 #if defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS)
2170 // Some platforms require MAP_FIXED. This is normally
2171 // a bad idea, because MAP_FIXED will overwrite
2172 // existing mappings.
2173 munmap(result,size);
2174 fixed = MAP_FIXED;
2175 goto mmap_again;
2176 #else
2177 barf("loadObj: failed to mmap() memory below 2Gb; asked for %lu bytes at %p. Try specifying an address with +RTS -xm<addr> -RTS", size, map_addr, result);
2178 #endif
2179 } else {
2180 // hmm, we were given memory somewhere else, but it's
2181 // still under 2Gb so we can use it. Next time, ask
2182 // for memory right after the place we just got some
2183 mmap_32bit_base = (StgWord8*)result + size;
2184 }
2185 }
2186 } else {
2187 if ((W_)result > 0x80000000) {
2188 // oops, we were given memory over 2Gb
2189 // ... try allocating memory somewhere else?;
2190 debugTrace(DEBUG_linker,"MAP_32BIT didn't work; gave us %lu bytes at 0x%p", bytes, result);
2191 munmap(result, size);
2192
2193 // Set a base address and try again... (guess: 1Gb)
2194 mmap_32bit_base = (void*)0x40000000;
2195 goto mmap_again;
2196 }
2197 }
2198 #endif
2199
2200 IF_DEBUG(linker, debugBelch("mmapForLinker: mapped %" FMT_Word " bytes starting at %p\n", (W_)size, result));
2201 IF_DEBUG(linker, debugBelch("mmapForLinker: done\n"));
2202 return result;
2203 }
2204 #endif // USE_MMAP
2205
2206
2207 void freeObjectCode (ObjectCode *oc)
2208 {
2209 #ifdef USE_MMAP
2210 int pagesize, size, r;
2211
2212 pagesize = getpagesize();
2213 size = ROUND_UP(oc->fileSize, pagesize);
2214
2215 r = munmap(oc->image, size);
2216 if (r == -1) {
2217 sysErrorBelch("munmap");
2218 }
2219
2220 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2221 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2222 if (!USE_CONTIGUOUS_MMAP)
2223 {
2224 munmap(oc->symbol_extras,
2225 ROUND_UP(sizeof(SymbolExtra) * oc->n_symbol_extras, pagesize));
2226 }
2227 #endif
2228 #endif
2229
2230 #else
2231
2232 #ifndef mingw32_HOST_OS
2233 stgFree(oc->image);
2234 #else
2235 VirtualFree(oc->image - PEi386_IMAGE_OFFSET, 0, MEM_RELEASE);
2236
2237 IndirectAddr *ia, *ia_next;
2238 ia = indirects;
2239 while (ia != NULL) {
2240 ia_next = ia->next;
2241 stgFree(ia);
2242 ia = ia_next;
2243 }
2244
2245 #endif
2246
2247 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2248 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2249 stgFree(oc->symbol_extras);
2250 #endif
2251 #endif
2252
2253 #endif
2254
2255 stgFree(oc->fileName);
2256 stgFree(oc->archiveMemberName);
2257 stgFree(oc);
2258 }
2259
2260
2261 static ObjectCode*
2262 mkOc( pathchar *path, char *image, int imageSize,
2263 char *archiveMemberName
2264 #ifndef USE_MMAP
2265 #ifdef darwin_HOST_OS
2266 , int misalignment
2267 #endif
2268 #endif
2269 ) {
2270 ObjectCode* oc;
2271
2272 IF_DEBUG(linker, debugBelch("mkOc: start\n"));
2273 oc = stgMallocBytes(sizeof(ObjectCode), "loadArchive(oc)");
2274
2275 # if defined(OBJFORMAT_ELF)
2276 oc->formatName = "ELF";
2277 # elif defined(OBJFORMAT_PEi386)
2278 oc->formatName = "PEi386";
2279 # elif defined(OBJFORMAT_MACHO)
2280 oc->formatName = "Mach-O";
2281 # else
2282 stgFree(oc);
2283 barf("loadObj: not implemented on this platform");
2284 # endif
2285
2286 oc->image = image;
2287 oc->fileName = pathdup(path);
2288
2289 if (archiveMemberName) {
2290 oc->archiveMemberName = stgMallocBytes( strlen(archiveMemberName)+1, "loadObj" );
2291 strcpy(oc->archiveMemberName, archiveMemberName);
2292 }
2293 else {
2294 oc->archiveMemberName = NULL;
2295 }
2296
2297 oc->fileSize = imageSize;
2298 oc->symbols = NULL;
2299 oc->sections = NULL;
2300 oc->proddables = NULL;
2301 oc->stable_ptrs = NULL;
2302
2303 #ifndef USE_MMAP
2304 #ifdef darwin_HOST_OS
2305 oc->misalignment = misalignment;
2306 #endif
2307 #endif
2308
2309 /* chain it onto the list of objects */
2310 oc->next = objects;
2311 objects = oc;
2312
2313 IF_DEBUG(linker, debugBelch("mkOc: done\n"));
2314 return oc;
2315 }
2316
2317 /* -----------------------------------------------------------------------------
2318 * Check if an object or archive is already loaded.
2319 *
2320 * Returns: 1 if the path is already loaded, 0 otherwise.
2321 */
2322 static HsInt
2323 isAlreadyLoaded( pathchar *path )
2324 {
2325 ObjectCode *o;
2326 for (o = objects; o; o = o->next) {
2327 if (0 == pathcmp(o->fileName, path)) {
2328 return 1; /* already loaded */
2329 }
2330 }
2331 return 0; /* not loaded yet */
2332 }
2333
2334 HsInt
2335 loadArchive( pathchar *path )
2336 {
2337 ObjectCode* oc;
2338 char *image;
2339 int memberSize;
2340 FILE *f;
2341 int n;
2342 size_t thisFileNameSize;
2343 char *fileName;
2344 size_t fileNameSize;
2345 int isObject, isGnuIndex, isThin;
2346 char tmp[20];
2347 char *gnuFileIndex;
2348 int gnuFileIndexSize;
2349 #if defined(darwin_HOST_OS)
2350 int i;
2351 uint32_t nfat_arch, nfat_offset, cputype, cpusubtype;
2352 #if defined(i386_HOST_ARCH)
2353 const uint32_t mycputype = CPU_TYPE_X86;
2354 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_ALL;
2355 #elif defined(x86_64_HOST_ARCH)
2356 const uint32_t mycputype = CPU_TYPE_X86_64;
2357 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_64_ALL;
2358 #elif defined(powerpc_HOST_ARCH)
2359 const uint32_t mycputype = CPU_TYPE_POWERPC;
2360 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2361 #elif defined(powerpc64_HOST_ARCH)
2362 const uint32_t mycputype = CPU_TYPE_POWERPC64;
2363 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2364 #else
2365 #error Unknown Darwin architecture
2366 #endif
2367 #if !defined(USE_MMAP)
2368 int misalignment;
2369 #endif
2370 #endif
2371
2372 initLinker();
2373
2374 IF_DEBUG(linker, debugBelch("loadArchive: start\n"));
2375 IF_DEBUG(linker, debugBelch("loadArchive: Loading archive `%" PATH_FMT" '\n", path));
2376
2377 /* Check that we haven't already loaded this archive.
2378 Ignore requests to load multiple times */
2379 if (isAlreadyLoaded(path)) {
2380 IF_DEBUG(linker,
2381 debugBelch("ignoring repeated load of %" PATH_FMT "\n", path));
2382 return 1; /* success */
2383 }
2384
2385 gnuFileIndex = NULL;
2386 gnuFileIndexSize = 0;
2387
2388 fileNameSize = 32;
2389 fileName = stgMallocBytes(fileNameSize, "loadArchive(fileName)");
2390
2391 isThin = 0;
2392
2393 f = pathopen(path, WSTR("rb"));
2394 if (!f)
2395 barf("loadObj: can't read `%s'", path);
2396
2397 /* Check if this is an archive by looking for the magic "!<arch>\n"
2398 * string. Usually, if this fails, we barf and quit. On Darwin however,
2399 * we may have a fat archive, which contains archives for more than
2400 * one architecture. Fat archives start with the magic number 0xcafebabe,
2401 * always stored big endian. If we find a fat_header, we scan through
2402 * the fat_arch structs, searching through for one for our host
2403 * architecture. If a matching struct is found, we read the offset
2404 * of our archive data (nfat_offset) and seek forward nfat_offset bytes
2405 * from the start of the file.
2406 *
2407 * A subtlety is that all of the members of the fat_header and fat_arch
2408 * structs are stored big endian, so we need to call byte order
2409 * conversion functions.
2410 *
2411 * If we find the appropriate architecture in a fat archive, we gobble
2412 * its magic "!<arch>\n" string and continue processing just as if
2413 * we had a single architecture archive.
2414 */
2415
2416 n = fread ( tmp, 1, 8, f );
2417 if (n != 8)
2418 barf("loadArchive: Failed reading header from `%s'", path);
2419 if (strncmp(tmp, "!<arch>\n", 8) == 0) {}
2420 #if !defined(mingw32_HOST_OS)
2421 /* See Note [thin archives on Windows] */
2422 else if (strncmp(tmp, "!<thin>\n", 8) == 0) {
2423 isThin = 1;
2424 }
2425 #endif
2426 #if defined(darwin_HOST_OS)
2427 /* Not a standard archive, look for a fat archive magic number: */
2428 else if (ntohl(*(uint32_t *)tmp) == FAT_MAGIC) {
2429 nfat_arch = ntohl(*(uint32_t *)(tmp + 4));
2430 IF_DEBUG(linker, debugBelch("loadArchive: found a fat archive containing %d architectures\n", nfat_arch));
2431 nfat_offset = 0;
2432
2433 for (i = 0; i < (int)nfat_arch; i++) {
2434 /* search for the right arch */
2435 n = fread( tmp, 1, 20, f );
2436 if (n != 8)
2437 barf("loadArchive: Failed reading arch from `%s'", path);
2438 cputype = ntohl(*(uint32_t *)tmp);
2439 cpusubtype = ntohl(*(uint32_t *)(tmp + 4));
2440
2441 if (cputype == mycputype && cpusubtype == mycpusubtype) {
2442 IF_DEBUG(linker, debugBelch("loadArchive: found my archive in a fat archive\n"));
2443 nfat_offset = ntohl(*(uint32_t *)(tmp + 8));
2444 break;
2445 }
2446 }
2447
2448 if (nfat_offset == 0) {
2449 barf ("loadArchive: searched %d architectures, but no host arch found", (int)nfat_arch);
2450 }
2451 else {
2452 n = fseek( f, nfat_offset, SEEK_SET );
2453 if (n != 0)
2454 barf("loadArchive: Failed to seek to arch in `%s'", path);
2455 n = fread ( tmp, 1, 8, f );
2456 if (n != 8)
2457 barf("loadArchive: Failed reading header from `%s'", path);
2458 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2459 barf("loadArchive: couldn't find archive in `%s' at offset %d", path, nfat_offset);
2460 }
2461 }
2462 }
2463 else {
2464 barf("loadArchive: Neither an archive, nor a fat archive: `%s'", path);
2465 }
2466 #else
2467 else {
2468 barf("loadArchive: Not an archive: `%s'", path);
2469 }
2470 #endif
2471
2472 IF_DEBUG(linker, debugBelch("loadArchive: loading archive contents\n"));
2473
2474 while(1) {
2475 n = fread ( fileName, 1, 16, f );
2476 if (n != 16) {
2477 if (feof(f)) {
2478 IF_DEBUG(linker, debugBelch("loadArchive: EOF while reading from '%" PATH_FMT "'\n", path));
2479 break;
2480 }
2481 else {
2482 barf("loadArchive: Failed reading file name from `%s'", path);
2483 }
2484 }
2485
2486 #if defined(darwin_HOST_OS)
2487 if (strncmp(fileName, "!<arch>\n", 8) == 0) {
2488 IF_DEBUG(linker, debugBelch("loadArchive: found the start of another archive, breaking\n"));
2489 break;
2490 }
2491 #endif
2492
2493 n = fread ( tmp, 1, 12, f );
2494 if (n != 12)
2495 barf("loadArchive: Failed reading mod time from `%s'", path);
2496 n = fread ( tmp, 1, 6, f );
2497 if (n != 6)
2498 barf("loadArchive: Failed reading owner from `%s'", path);
2499 n = fread ( tmp, 1, 6, f );
2500 if (n != 6)
2501 barf("loadArchive: Failed reading group from `%s'", path);
2502 n = fread ( tmp, 1, 8, f );
2503 if (n != 8)
2504 barf("loadArchive: Failed reading mode from `%s'", path);
2505 n = fread ( tmp, 1, 10, f );
2506 if (n != 10)
2507 barf("loadArchive: Failed reading size from `%s'", path);
2508 tmp[10] = '\0';
2509 for (n = 0; isdigit(tmp[n]); n++);
2510 tmp[n] = '\0';
2511 memberSize = atoi(tmp);
2512
2513 IF_DEBUG(linker, debugBelch("loadArchive: size of this archive member is %d\n", memberSize));
2514 n = fread ( tmp, 1, 2, f );
2515 if (n != 2)
2516 barf("loadArchive: Failed reading magic from `%s'", path);
2517 if (strncmp(tmp, "\x60\x0A", 2) != 0)
2518 barf("loadArchive: Failed reading magic from `%s' at %ld. Got %c%c",
2519 path, ftell(f), tmp[0], tmp[1]);
2520
2521 isGnuIndex = 0;
2522 /* Check for BSD-variant large filenames */
2523 if (0 == strncmp(fileName, "#1/", 3)) {
2524 fileName[16] = '\0';
2525 if (isdigit(fileName[3])) {
2526 for (n = 4; isdigit(fileName[n]); n++);
2527 fileName[n] = '\0';
2528 thisFileNameSize = atoi(fileName + 3);
2529 memberSize -= thisFileNameSize;
2530 if (thisFileNameSize >= fileNameSize) {
2531 /* Double it to avoid potentially continually
2532 increasing it by 1 */
2533 fileNameSize = thisFileNameSize * 2;
2534 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2535 }
2536 n = fread ( fileName, 1, thisFileNameSize, f );
2537 if (n != (int)thisFileNameSize) {
2538 barf("loadArchive: Failed reading filename from `%s'",
2539 path);
2540 }
2541 fileName[thisFileNameSize] = 0;
2542
2543 /* On OS X at least, thisFileNameSize is the size of the
2544 fileName field, not the length of the fileName
2545 itself. */
2546 thisFileNameSize = strlen(fileName);
2547 }
2548 else {
2549 barf("loadArchive: BSD-variant filename size not found while reading filename from `%s'", path);
2550 }
2551 }
2552 /* Check for GNU file index file */
2553 else if (0 == strncmp(fileName, "//", 2)) {
2554 fileName[0] = '\0';
2555 thisFileNameSize = 0;
2556 isGnuIndex = 1;
2557 }
2558 /* Check for a file in the GNU file index */
2559 else if (fileName[0] == '/') {
2560 if (isdigit(fileName[1])) {
2561 int i;
2562
2563 for (n = 2; isdigit(fileName[n]); n++);
2564 fileName[n] = '\0';
2565 n = atoi(fileName + 1);
2566
2567 if (gnuFileIndex == NULL) {
2568 barf("loadArchive: GNU-variant filename without an index while reading from `%s'", path);
2569 }
2570 if (n < 0 || n > gnuFileIndexSize) {
2571 barf("loadArchive: GNU-variant filename offset %d out of range [0..%d] while reading filename from `%s'", n, gnuFileIndexSize, path);
2572 }
2573 if (n != 0 && gnuFileIndex[n - 1] != '\n') {
2574 barf("loadArchive: GNU-variant filename offset %d invalid (range [0..%d]) while reading filename from `%s'", n, gnuFileIndexSize, path);
2575 }
2576 for (i = n; gnuFileIndex[i] != '\n'; i++);
2577 thisFileNameSize = i - n - 1;
2578 if (thisFileNameSize >= fileNameSize) {
2579 /* Double it to avoid potentially continually
2580 increasing it by 1 */
2581 fileNameSize = thisFileNameSize * 2;
2582 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2583 }
2584 memcpy(fileName, gnuFileIndex + n, thisFileNameSize);
2585 fileName[thisFileNameSize] = '\0';
2586 }
2587 else if (fileName[1] == ' ') {
2588 fileName[0] = '\0';
2589 thisFileNameSize = 0;
2590 }
2591 else {
2592 barf("loadArchive: GNU-variant filename offset not found while reading filename from `%s'", path);
2593 }
2594 }
2595 /* Finally, the case where the filename field actually contains
2596 the filename */
2597 else {
2598 /* GNU ar terminates filenames with a '/', this allowing
2599 spaces in filenames. So first look to see if there is a
2600 terminating '/'. */
2601 for (thisFileNameSize = 0;
2602 thisFileNameSize < 16;
2603 thisFileNameSize++) {
2604 if (fileName[thisFileNameSize] == '/') {
2605 fileName[thisFileNameSize] = '\0';
2606 break;
2607 }
2608 }
2609 /* If we didn't find a '/', then a space teminates the
2610 filename. Note that if we don't find one, then
2611 thisFileNameSize ends up as 16, and we already have the
2612 '\0' at the end. */
2613 if (thisFileNameSize == 16) {
2614 for (thisFileNameSize = 0;
2615 thisFileNameSize < 16;
2616 thisFileNameSize++) {
2617 if (fileName[thisFileNameSize] == ' ') {
2618 fileName[thisFileNameSize] = '\0';
2619 break;
2620 }
2621 }
2622 }
2623 }
2624
2625 IF_DEBUG(linker,
2626 debugBelch("loadArchive: Found member file `%s'\n", fileName));
2627
2628 isObject = thisFileNameSize >= 2
2629 && fileName[thisFileNameSize - 2] == '.'
2630 && fileName[thisFileNameSize - 1] == 'o';
2631
2632 IF_DEBUG(linker, debugBelch("loadArchive: \tthisFileNameSize = %d\n", (int)thisFileNameSize));
2633 IF_DEBUG(linker, debugBelch("loadArchive: \tisObject = %d\n", isObject));
2634
2635 if (isObject) {
2636 char *archiveMemberName;
2637
2638 IF_DEBUG(linker, debugBelch("loadArchive: Member is an object file...loading...\n"));
2639
2640 /* We can't mmap from the archive directly, as object
2641 files need to be 8-byte aligned but files in .ar
2642 archives are 2-byte aligned. When possible we use mmap
2643 to get some anonymous memory, as on 64-bit platforms if
2644 we use malloc then we can be given memory above 2^32.
2645 In the mmap case we're probably wasting lots of space;
2646 we could do better. */
2647 #if defined(USE_MMAP)
2648 image = mmapForLinker(memberSize, MAP_ANONYMOUS, -1);
2649 #elif defined(mingw32_HOST_OS)
2650 // TODO: We would like to use allocateExec here, but allocateExec
2651 // cannot currently allocate blocks large enough.
2652 image = allocateImageAndTrampolines(
2653 #if defined(x86_64_HOST_ARCH)
2654 f, path, fileName,
2655 #endif
2656 memberSize);
2657 #elif defined(darwin_HOST_OS)
2658 /* See loadObj() */
2659 misalignment = machoGetMisalignment(f);
2660 image = stgMallocBytes(memberSize + misalignment, "loadArchive(image)");
2661 image += misalignment;
2662 #else
2663 image = stgMallocBytes(memberSize, "loadArchive(image)");
2664 #endif
2665
2666 #if !defined(mingw32_HOST_OS)
2667 /*
2668 * Note [thin archives on Windows]
2669 * This doesn't compile on Windows because it assumes
2670 * char* pathnames, and we use wchar_t* on Windows. It's
2671 * not trivial to fix, so I'm leaving it disabled on
2672 * Windows for now --SDM
2673 */
2674 if (isThin) {
2675 FILE *member;
2676 char *pathCopy, *dirName, *memberPath;
2677
2678 /* Allocate and setup the dirname of the archive. We'll need
2679 this to locate the thin member */
2680 pathCopy = stgMallocBytes(strlen(path) + 1, "loadArchive(file)");
2681 strcpy(pathCopy, path);
2682 dirName = dirname(pathCopy);
2683
2684 /* Append the relative member name to the dirname. This should be
2685 be the full path to the actual thin member. */
2686 memberPath = stgMallocBytes(
2687 strlen(path) + 1 + strlen(fileName) + 1, "loadArchive(file)");
2688 strcpy(memberPath, dirName);
2689 memberPath[strlen(dirName)] = '/';
2690 strcpy(memberPath + strlen(dirName) + 1, fileName);
2691
2692 member = pathopen(memberPath, WSTR("rb"));
2693 if (!member)
2694 barf("loadObj: can't read `%s'", path);
2695
2696 n = fread ( image, 1, memberSize, member );
2697 if (n != memberSize) {
2698 barf("loadArchive: error whilst reading `%s'", fileName);
2699 }
2700
2701 fclose(member);
2702 stgFree(memberPath);
2703 stgFree(pathCopy);
2704 }
2705 else
2706 #endif
2707 {
2708 n = fread ( image, 1, memberSize, f );
2709 if (n != memberSize) {
2710 barf("loadArchive: error whilst reading `%s'", path);
2711 }
2712 }
2713
2714 archiveMemberName = stgMallocBytes(pathlen(path) + thisFileNameSize + 3,
2715 "loadArchive(file)");
2716 sprintf(archiveMemberName, "%" PATH_FMT "(%.*s)",
2717 path, (int)thisFileNameSize, fileName);
2718
2719 oc = mkOc(path, image, memberSize, archiveMemberName
2720 #ifndef USE_MMAP
2721 #ifdef darwin_HOST_OS
2722 , misalignment
2723 #endif
2724 #endif
2725 );
2726
2727 stgFree(archiveMemberName);
2728
2729 if (0 == loadOc(oc)) {
2730 stgFree(fileName);
2731 fclose(f);
2732 return 0;
2733 }
2734 }
2735 else if (isGnuIndex) {
2736 if (gnuFileIndex != NULL) {
2737 barf("loadArchive: GNU-variant index found, but already have an index, while reading filename from `%s'", path);
2738 }
2739 IF_DEBUG(linker, debugBelch("loadArchive: Found GNU-variant file index\n"));
2740 #ifdef USE_MMAP
2741 gnuFileIndex = mmapForLinker(memberSize + 1, MAP_ANONYMOUS, -1);
2742 #else
2743 gnuFileIndex = stgMallocBytes(memberSize + 1, "loadArchive(image)");
2744 #endif
2745 n = fread ( gnuFileIndex, 1, memberSize, f );
2746 if (n != memberSize) {
2747 barf("loadArchive: error whilst reading `%s'", path);
2748 }
2749 gnuFileIndex[memberSize] = '/';
2750 gnuFileIndexSize = memberSize;
2751 }
2752 else {
2753 IF_DEBUG(linker, debugBelch("loadArchive: '%s' does not appear to be an object file\n", fileName));
2754 if (!isThin || thisFileNameSize == 0) {
2755 n = fseek(f, memberSize, SEEK_CUR);
2756 if (n != 0)
2757 barf("loadArchive: error whilst seeking by %d in `%s'",
2758 memberSize, path);
2759 }
2760 }
2761
2762 /* .ar files are 2-byte aligned */
2763 if (!(isThin && thisFileNameSize > 0) && memberSize % 2) {
2764 IF_DEBUG(linker, debugBelch("loadArchive: trying to read one pad byte\n"));
2765 n = fread ( tmp, 1, 1, f );
2766 if (n != 1) {
2767 if (feof(f)) {
2768 IF_DEBUG(linker, debugBelch("loadArchive: found EOF while reading one pad byte\n"));
2769 break;
2770 }
2771 else {
2772 barf("loadArchive: Failed reading padding from `%s'", path);
2773 }
2774 }
2775 IF_DEBUG(linker, debugBelch("loadArchive: successfully read one pad byte\n"));
2776 }
2777 IF_DEBUG(linker, debugBelch("loadArchive: reached end of archive loading while loop\n"));
2778 }
2779
2780 fclose(f);
2781
2782 stgFree(fileName);
2783 if (gnuFileIndex != NULL) {
2784 #ifdef USE_MMAP
2785 munmap(gnuFileIndex, gnuFileIndexSize + 1);
2786 #else
2787 stgFree(gnuFileIndex);
2788 #endif
2789 }
2790
2791 IF_DEBUG(linker, debugBelch("loadArchive: done\n"));
2792 return 1;
2793 }
2794
2795 /* -----------------------------------------------------------------------------
2796 * Load an obj (populate the global symbol table, but don't resolve yet)
2797 *
2798 * Returns: 1 if ok, 0 on error.
2799 */
2800 HsInt
2801 loadObj( pathchar *path )
2802 {
2803 ObjectCode* oc;
2804 char *image;
2805 int fileSize;
2806 struct_stat st;
2807 int r;
2808 #ifdef USE_MMAP
2809 int fd;
2810 #else
2811 FILE *f;
2812 # if defined(darwin_HOST_OS)
2813 int misalignment;
2814 # endif
2815 #endif
2816 IF_DEBUG(linker, debugBelch("loadObj %" PATH_FMT "\n", path));
2817
2818 initLinker();
2819
2820 /* debugBelch("loadObj %s\n", path ); */
2821
2822 /* Check that we haven't already loaded this object.
2823 Ignore requests to load multiple times */
2824
2825 if (isAlreadyLoaded(path)) {
2826 IF_DEBUG(linker,
2827 debugBelch("ignoring repeated load of %" PATH_FMT "\n", path));
2828 return 1; /* success */
2829 }
2830
2831 r = pathstat(path, &st);
2832 if (r == -1) {
2833 IF_DEBUG(linker, debugBelch("File doesn't exist\n"));
2834 return 0;
2835 }
2836
2837 fileSize = st.st_size;
2838
2839 #ifdef USE_MMAP
2840 /* On many architectures malloc'd memory isn't executable, so we need to use mmap. */
2841
2842 #if defined(openbsd_HOST_OS)
2843 /* coverity[toctou] */
2844 fd = open(path, O_RDONLY, S_IRUSR);
2845 #else
2846 /* coverity[toctou] */
2847 fd = open(path, O_RDONLY);
2848 #endif
2849 if (fd == -1)
2850 barf("loadObj: can't open `%s'", path);
2851
2852 image = mmapForLinker(fileSize, 0, fd);
2853
2854 close(fd);
2855
2856 #else /* !USE_MMAP */
2857 /* load the image into memory */
2858 /* coverity[toctou] */
2859 f = pathopen(path, WSTR("rb"));
2860 if (!f)
2861 barf("loadObj: can't read `%" PATH_FMT "'", path);
2862
2863 # if defined(mingw32_HOST_OS)
2864 // TODO: We would like to use allocateExec here, but allocateExec
2865 // cannot currently allocate blocks large enough.
2866 image = allocateImageAndTrampolines(
2867 #if defined(x86_64_HOST_ARCH)
2868 f, path, "itself",
2869 #endif
2870 fileSize);
2871 # elif defined(darwin_HOST_OS)
2872 // In a Mach-O .o file, all sections can and will be misaligned
2873 // if the total size of the headers is not a multiple of the
2874 // desired alignment. This is fine for .o files that only serve
2875 // as input for the static linker, but it's not fine for us,
2876 // as SSE (used by gcc for floating point) and Altivec require
2877 // 16-byte alignment.
2878 // We calculate the correct alignment from the header before
2879 // reading the file, and then we misalign image on purpose so
2880 // that the actual sections end up aligned again.
2881 misalignment = machoGetMisalignment(f);
2882 image = stgMallocBytes(fileSize + misalignment, "loadObj(image)");
2883 image += misalignment;
2884 # else
2885 image = stgMallocBytes(fileSize, "loadObj(image)");
2886 # endif
2887
2888 {
2889 int n;
2890 n = fread ( image, 1, fileSize, f );
2891 if (n != fileSize)
2892 barf("loadObj: error whilst reading `%s'", path);
2893 }
2894 fclose(f);
2895 #endif /* USE_MMAP */
2896
2897 oc = mkOc(path, image, fileSize, NULL
2898 #ifndef USE_MMAP
2899 #ifdef darwin_HOST_OS
2900 , misalignment
2901 #endif
2902 #endif
2903 );
2904
2905 return loadOc(oc);
2906 }
2907
2908 static HsInt
2909 loadOc( ObjectCode* oc ) {
2910 int r;
2911
2912 IF_DEBUG(linker, debugBelch("loadOc: start\n"));
2913
2914 # if defined(OBJFORMAT_MACHO) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH))
2915 r = ocAllocateSymbolExtras_MachO ( oc );
2916 if (!r) {
2917 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_MachO failed\n"));
2918 return r;
2919 }
2920 # elif defined(OBJFORMAT_ELF) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH))
2921 r = ocAllocateSymbolExtras_ELF ( oc );
2922 if (!r) {
2923 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_ELF failed\n"));
2924 return r;
2925 }
2926 # elif defined(OBJFORMAT_PEi386) && defined(x86_64_HOST_ARCH)
2927 ocAllocateSymbolExtras_PEi386 ( oc );
2928 #endif
2929
2930 /* verify the in-memory image */
2931 # if defined(OBJFORMAT_ELF)
2932 r = ocVerifyImage_ELF ( oc );
2933 # elif defined(OBJFORMAT_PEi386)
2934 r = ocVerifyImage_PEi386 ( oc );
2935 # elif defined(OBJFORMAT_MACHO)
2936 r = ocVerifyImage_MachO ( oc );
2937 # else
2938 barf("loadObj: no verify method");
2939 # endif
2940 if (!r) {
2941 IF_DEBUG(linker, debugBelch("loadOc: ocVerifyImage_* failed\n"));
2942 return r;
2943 }
2944
2945 /* build the symbol list for this image */
2946 # if defined(OBJFORMAT_ELF)
2947 r = ocGetNames_ELF ( oc );
2948 # elif defined(OBJFORMAT_PEi386)
2949 r = ocGetNames_PEi386 ( oc );
2950 # elif defined(OBJFORMAT_MACHO)
2951 r = ocGetNames_MachO ( oc );
2952 # else
2953 barf("loadObj: no getNames method");
2954 # endif
2955 if (!r) {
2956 IF_DEBUG(linker, debugBelch("loadOc: ocGetNames_* failed\n"));
2957 return r;
2958 }
2959
2960 /* loaded, but not resolved yet */
2961 oc->status = OBJECT_LOADED;
2962 IF_DEBUG(linker, debugBelch("loadOc: done.\n"));
2963
2964 return 1;
2965 }
2966
2967 /* -----------------------------------------------------------------------------
2968 * resolve all the currently unlinked objects in memory
2969 *
2970 * Returns: 1 if ok, 0 on error.
2971 */
2972 HsInt
2973 resolveObjs( void )
2974 {
2975 ObjectCode *oc;
2976 int r;
2977
2978 IF_DEBUG(linker, debugBelch("resolveObjs: start\n"));
2979 initLinker();
2980
2981 for (oc = objects; oc; oc = oc->next) {
2982 if (oc->status != OBJECT_RESOLVED) {
2983 # if defined(OBJFORMAT_ELF)
2984 r = ocResolve_ELF ( oc );
2985 # elif defined(OBJFORMAT_PEi386)
2986 r = ocResolve_PEi386 ( oc );
2987 # elif defined(OBJFORMAT_MACHO)
2988 r = ocResolve_MachO ( oc );
2989 # else
2990 barf("resolveObjs: not implemented on this platform");
2991 # endif
2992 if (!r) { return r; }
2993
2994 // run init/init_array/ctors/mod_init_func
2995
2996 loading_obj = oc; // tells foreignExportStablePtr what to do
2997 #if defined(OBJFORMAT_ELF)
2998 r = ocRunInit_ELF ( oc );
2999 #elif defined(OBJFORMAT_PEi386)
3000 r = ocRunInit_PEi386 ( oc );
3001 #elif defined(OBJFORMAT_MACHO)
3002 r = ocRunInit_MachO ( oc );
3003 #else
3004 barf("resolveObjs: initializers not implemented on this platform");
3005 #endif
3006 loading_obj = NULL;
3007
3008 if (!r) { return r; }
3009
3010 oc->status = OBJECT_RESOLVED;
3011 }
3012 }
3013 IF_DEBUG(linker, debugBelch("resolveObjs: done\n"));
3014 return 1;
3015 }
3016
3017 /* -----------------------------------------------------------------------------
3018 * delete an object from the pool
3019 */
3020 HsInt
3021 unloadObj( pathchar *path )
3022 {
3023 ObjectCode *oc, *prev, *next;
3024 HsBool unloadedAnyObj = HS_BOOL_FALSE;
3025
3026 ASSERT(symhash != NULL);
3027 ASSERT(objects != NULL);
3028
3029 initLinker();
3030
3031 IF_DEBUG(linker, debugBelch("unloadObj: %" PATH_FMT "\n", path));
3032
3033 prev = NULL;
3034 for (oc = objects; oc; oc = next) {
3035 next = oc->next; // oc might be freed
3036
3037 if (!pathcmp(oc->fileName,path)) {
3038
3039 /* Remove all the mappings for the symbols within this
3040 * object..
3041 */
3042 {
3043 int i;
3044 for (i = 0; i < oc->n_symbols; i++) {
3045 if (oc->symbols[i] != NULL) {
3046 ghciRemoveSymbolTable(symhash, oc->symbols[i], oc);
3047 }
3048 }
3049 }
3050
3051 if (prev == NULL) {
3052 objects = oc->next;
3053 } else {
3054 prev->next = oc->next;
3055 }
3056 oc->next = unloaded_objects;
3057 unloaded_objects = oc;
3058
3059 // The data itself and a few other bits (oc->fileName,
3060 // oc->archiveMemberName) are kept until freeObjectCode(),
3061 // which is only called when it has been determined that
3062 // it is safe to unload the object.
3063 stgFree(oc->symbols);
3064
3065 {
3066 Section *s, *nexts;
3067
3068 for (s = oc->sections; s != NULL; s = nexts) {
3069 nexts = s->next;
3070 stgFree(s);
3071 }
3072 }
3073
3074 freeProddableBlocks(oc);
3075
3076 // Release any StablePtrs that were created when this
3077 // object module was initialized.
3078 {
3079 ForeignExportStablePtr *fe_ptr, *next;
3080
3081 for (fe_ptr = oc->stable_ptrs; fe_ptr != NULL; fe_ptr = next) {
3082 next = fe_ptr->next;
3083 freeStablePtr(fe_ptr->stable_ptr);
3084 stgFree(fe_ptr);
3085 }
3086 }
3087
3088 oc->status = OBJECT_UNLOADED;
3089
3090 /* This could be a member of an archive so continue
3091 * unloading other members. */
3092 unloadedAnyObj = HS_BOOL_TRUE;
3093 } else {
3094 prev = oc;
3095 }
3096 }
3097
3098 if (unloadedAnyObj) {
3099 return 1;
3100 }
3101 else {
3102 errorBelch("unloadObj: can't find `%" PATH_FMT "' to unload", path);
3103 return 0;
3104 }
3105 }
3106
3107 /* -----------------------------------------------------------------------------
3108 * Sanity checking. For each ObjectCode, maintain a list of address ranges
3109 * which may be prodded during relocation, and abort if we try and write
3110 * outside any of these.
3111 */
3112 static void
3113 addProddableBlock ( ObjectCode* oc, void* start, int size )
3114 {
3115 ProddableBlock* pb
3116 = stgMallocBytes(sizeof(ProddableBlock), "addProddableBlock");
3117
3118 IF_DEBUG(linker, debugBelch("addProddableBlock: %p %p %d\n", oc, start, size));
3119 ASSERT(size > 0);
3120 pb->start = start;
3121 pb->size = size;
3122 pb->next = oc->proddables;
3123 oc->proddables = pb;
3124 }
3125
3126 static void
3127 checkProddableBlock (ObjectCode *oc, void *addr, size_t size )
3128 {
3129 ProddableBlock* pb;
3130
3131 for (pb = oc->proddables; pb != NULL; pb = pb->next) {
3132 char* s = (char*)(pb->start);
3133 char* e = s + pb->size;
3134 char* a = (char*)addr;
3135 if (a >= s && (a+size) <= e) return;
3136 }
3137 barf("checkProddableBlock: invalid fixup in runtime linker: %p", addr);
3138 }
3139
3140 static void freeProddableBlocks (ObjectCode *oc)
3141 {
3142 ProddableBlock *pb, *next;
3143
3144 for (pb = oc->proddables; pb != NULL; pb = next) {
3145 next = pb->next;
3146 stgFree(pb);
3147 }
3148 oc->proddables = NULL;
3149 }
3150
3151 /* -----------------------------------------------------------------------------
3152 * Section management.
3153 */
3154 static void
3155 addSection ( ObjectCode* oc, SectionKind kind,
3156 void* start, void* end )
3157 {
3158 Section* s = stgMallocBytes(sizeof(Section), "addSection");
3159 s->start = start;
3160 s->end = end;
3161 s->kind = kind;
3162 s->next = oc->sections;
3163 oc->sections = s;
3164
3165 IF_DEBUG(linker, debugBelch("addSection: %p-%p (size %lld), kind %d\n",
3166 start, ((char*)end)-1, ((long long)(size_t)end) - ((long long)(size_t)start) + 1, kind ));
3167 }
3168
3169
3170 /* --------------------------------------------------------------------------
3171 * Symbol Extras.
3172 * This is about allocating a small chunk of memory for every symbol in the
3173 * object file. We make sure that the SymboLExtras are always "in range" of
3174 * limited-range PC-relative instructions on various platforms by allocating
3175 * them right next to the object code itself.
3176 */
3177
3178 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3179 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3180
3181 /*
3182 ocAllocateSymbolExtras
3183
3184 Allocate additional space at the end of the object file image to make room
3185 for jump islands (powerpc, x86_64, arm) and GOT entries (x86_64).
3186
3187 PowerPC relative branch instructions have a 24 bit displacement field.
3188 As PPC code is always 4-byte-aligned, this yields a +-32MB range.
3189 If a particular imported symbol is outside this range, we have to redirect
3190 the jump to a short piece of new code that just loads the 32bit absolute
3191 address and jumps there.
3192 On x86_64, PC-relative jumps and PC-relative accesses to the GOT are limited
3193 to 32 bits (+-2GB).
3194
3195 This function just allocates space for one SymbolExtra for every
3196 undefined symbol in the object file. The code for the jump islands is
3197 filled in by makeSymbolExtra below.
3198 */
3199
3200 static int ocAllocateSymbolExtras( ObjectCode* oc, int count, int first )
3201 {
3202 #ifdef USE_MMAP
3203 int pagesize, n, m;
3204 #endif
3205 int aligned;
3206 #ifndef USE_MMAP
3207 int misalignment = 0;
3208 #ifdef darwin_HOST_OS
3209 misalignment = oc->misalignment;
3210 #endif
3211 #endif
3212
3213 if( count > 0 )
3214 {
3215 // round up to the nearest 4
3216 aligned = (oc->fileSize + 3) & ~3;
3217
3218 #ifdef USE_MMAP
3219 pagesize = getpagesize();
3220 n = ROUND_UP( oc->fileSize, pagesize );
3221 m = ROUND_UP( aligned + sizeof (SymbolExtra) * count, pagesize );
3222
3223 /* we try to use spare space at the end of the last page of the
3224 * image for the jump islands, but if there isn't enough space
3225 * then we have to map some (anonymously, remembering MAP_32BIT).
3226 */
3227 if( m > n ) // we need to allocate more pages
3228 {
3229 if (USE_CONTIGUOUS_MMAP)
3230 {
3231 /* Keep image and symbol_extras contiguous */
3232 void *new = mmapForLinker(n + (sizeof(SymbolExtra) * count),
3233 MAP_ANONYMOUS, -1);
3234 if (new)
3235 {
3236 memcpy(new, oc->image, oc->fileSize);
3237 munmap(oc->image, n);
3238 oc->image = new;
3239 oc->fileSize = n + (sizeof(SymbolExtra) * count);
3240 oc->symbol_extras = (SymbolExtra *) (oc->image + n);
3241 }
3242 else
3243 oc->symbol_extras = NULL;
3244 }
3245 else
3246 {
3247 oc->symbol_extras = mmapForLinker(sizeof(SymbolExtra) * count,
3248 MAP_ANONYMOUS, -1);
3249 }
3250 }
3251 else
3252 {
3253 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3254 }
3255 #else
3256 oc->image -= misalignment;
3257 oc->image = stgReallocBytes( oc->image,
3258 misalignment +
3259 aligned + sizeof (SymbolExtra) * count,
3260 "ocAllocateSymbolExtras" );
3261 oc->image += misalignment;
3262
3263 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3264 #endif /* USE_MMAP */
3265
3266 memset( oc->symbol_extras, 0, sizeof (SymbolExtra) * count );
3267 }
3268 else
3269 oc->symbol_extras = NULL;
3270
3271 oc->first_symbol_extra = first;
3272 oc->n_symbol_extras = count;
3273
3274 return 1;
3275 }
3276
3277 #endif
3278 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3279
3280 #if defined(arm_HOST_ARCH)
3281
3282 static void
3283 ocFlushInstructionCache( ObjectCode *oc )
3284 {
3285 // Object code
3286 __clear_cache(oc->image, oc->image + oc->fileSize);
3287 // Jump islands
3288 __clear_cache(oc->symbol_extras, &oc->symbol_extras[oc->n_symbol_extras]);
3289 }
3290
3291 #endif
3292
3293 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3294 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3295
3296 static SymbolExtra* makeSymbolExtra( ObjectCode* oc,
3297 unsigned long symbolNumber,
3298 unsigned long target )
3299 {
3300 SymbolExtra *extra;
3301
3302 ASSERT( symbolNumber >= oc->first_symbol_extra
3303 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3304
3305 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3306
3307 #ifdef powerpc_HOST_ARCH
3308 // lis r12, hi16(target)
3309 extra->jumpIsland.lis_r12 = 0x3d80;
3310 extra->jumpIsland.hi_addr = target >> 16;
3311
3312 // ori r12, r12, lo16(target)
3313 extra->jumpIsland.ori_r12_r12 = 0x618c;
3314 extra->jumpIsland.lo_addr = target & 0xffff;
3315
3316 // mtctr r12
3317 extra->jumpIsland.mtctr_r12 = 0x7d8903a6;
3318
3319 // bctr
3320 extra->jumpIsland.bctr = 0x4e800420;
3321 #endif
3322 #ifdef x86_64_HOST_ARCH
3323 // jmp *-14(%rip)
3324 static uint8_t jmp[] = { 0xFF, 0x25, 0xF2, 0xFF, 0xFF, 0xFF };
3325 extra->addr = target;
3326 memcpy(extra->jumpIsland, jmp, 6);
3327 #endif
3328
3329 return extra;
3330 }
3331
3332 #endif
3333 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3334
3335 #ifdef arm_HOST_ARCH
3336 static SymbolExtra* makeArmSymbolExtra( ObjectCode* oc,
3337 unsigned long symbolNumber,
3338 unsigned long target,
3339 int fromThumb,
3340 int toThumb )
3341 {
3342 SymbolExtra *extra;
3343
3344 ASSERT( symbolNumber >= oc->first_symbol_extra
3345 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3346
3347 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3348
3349 // Make sure instruction mode bit is set properly
3350 if (toThumb)
3351 target |= 1;
3352 else
3353 target &= ~1;
3354
3355 if (!fromThumb) {
3356 // In ARM encoding:
3357 // movw r12, #0
3358 // movt r12, #0
3359 // bx r12
3360 uint32_t code[] = { 0xe300c000, 0xe340c000, 0xe12fff1c };
3361
3362 // Patch lower half-word into movw
3363 code[0] |= ((target>>12) & 0xf) << 16;
3364 code[0] |= target & 0xfff;
3365 // Patch upper half-word into movt
3366 target >>= 16;
3367 code[1] |= ((target>>12) & 0xf) << 16;
3368 code[1] |= target & 0xfff;
3369
3370 memcpy(extra->jumpIsland, code, 12);
3371
3372 } else {
3373 // In Thumb encoding:
3374 // movw r12, #0
3375 // movt r12, #0
3376 // bx r12
3377 uint16_t code[] = { 0xf240, 0x0c00,
3378 0xf2c0, 0x0c00,
3379 0x4760 };
3380
3381 // Patch lower half-word into movw
3382 code[0] |= (target>>12) & 0xf;
3383 code[0] |= ((target>>11) & 0x1) << 10;
3384 code[1] |= ((target>>8) & 0x7) << 12;
3385 code[1] |= target & 0xff;
3386 // Patch upper half-word into movt
3387 target >>= 16;
3388 code[2] |= (target>>12) & 0xf;
3389 code[2] |= ((target>>11) & 0x1) << 10;
3390 code[3] |= ((target>>8) & 0x7) << 12;
3391 code[3] |= target & 0xff;
3392
3393 memcpy(extra->jumpIsland, code, 10);
3394 }
3395
3396 return extra;
3397 }
3398 #endif // arm_HOST_ARCH
3399
3400 /* --------------------------------------------------------------------------
3401 * PowerPC specifics (instruction cache flushing)
3402 * ------------------------------------------------------------------------*/
3403
3404 #ifdef powerpc_HOST_ARCH
3405 /*
3406 ocFlushInstructionCache
3407
3408 Flush the data & instruction caches.
3409 Because the PPC has split data/instruction caches, we have to
3410 do that whenever we modify code at runtime.
3411 */
3412
3413 static void
3414 ocFlushInstructionCacheFrom(void* begin, size_t length)
3415 {
3416 size_t n = (length + 3) / 4;
3417 unsigned long* p = begin;
3418
3419 while (n--)
3420 {
3421 __asm__ volatile ( "dcbf 0,%0\n\t"
3422 "sync\n\t"
3423 "icbi 0,%0"
3424 :
3425 : "r" (p)
3426 );
3427 p++;
3428 }
3429 __asm__ volatile ( "sync\n\t"
3430 "isync"
3431 );
3432 }
3433
3434 static void
3435 ocFlushInstructionCache( ObjectCode *oc )
3436 {
3437 /* The main object code */
3438 ocFlushInstructionCacheFrom(oc->image
3439 #ifdef darwin_HOST_OS
3440 + oc->misalignment
3441 #endif
3442 , oc->fileSize);
3443
3444 /* Jump Islands */
3445 ocFlushInstructionCacheFrom(oc->symbol_extras, sizeof(SymbolExtra) * oc->n_symbol_extras);
3446 }
3447 #endif /* powerpc_HOST_ARCH */
3448
3449
3450 /* --------------------------------------------------------------------------
3451 * PEi386 specifics (Win32 targets)
3452 * ------------------------------------------------------------------------*/
3453
3454 /* The information for this linker comes from
3455 Microsoft Portable Executable
3456 and Common Object File Format Specification
3457 revision 5.1 January 1998
3458 which SimonM says comes from the MS Developer Network CDs.
3459
3460 It can be found there (on older CDs), but can also be found
3461 online at:
3462
3463 http://www.microsoft.com/hwdev/hardware/PECOFF.asp
3464
3465 (this is Rev 6.0 from February 1999).
3466
3467 Things move, so if that fails, try searching for it via
3468
3469 http://www.google.com/search?q=PE+COFF+specification
3470
3471 The ultimate reference for the PE format is the Winnt.h
3472 header file that comes with the Platform SDKs; as always,
3473 implementations will drift wrt their documentation.
3474
3475 A good background article on the PE format is Matt Pietrek's
3476 March 1994 article in Microsoft System Journal (MSJ)
3477 (Vol.9, No. 3): "Peering Inside the PE: A Tour of the
3478 Win32 Portable Executable File Format." The info in there
3479 has recently been updated in a two part article in
3480 MSDN magazine, issues Feb and March 2002,
3481 "Inside Windows: An In-Depth Look into the Win32 Portable
3482 Executable File Format"
3483
3484 John Levine's book "Linkers and Loaders" contains useful
3485 info on PE too.
3486 */
3487
3488
3489 #if defined(OBJFORMAT_PEi386)
3490
3491
3492
3493 typedef unsigned char UChar;
3494 typedef unsigned short UInt16;
3495 typedef unsigned int UInt32;
3496 typedef int Int32;
3497 typedef unsigned long long int UInt64;
3498
3499
3500 typedef
3501 struct {
3502 UInt16 Machine;
3503 UInt16 NumberOfSections;
3504 UInt32 TimeDateStamp;
3505 UInt32 PointerToSymbolTable;
3506 UInt32 NumberOfSymbols;
3507 UInt16 SizeOfOptionalHeader;
3508 UInt16 Characteristics;
3509 }
3510 COFF_header;
3511
3512 #define sizeof_COFF_header 20
3513
3514
3515 typedef
3516 struct {
3517 UChar Name[8];
3518 UInt32 VirtualSize;
3519 UInt32 VirtualAddress;
3520 UInt32 SizeOfRawData;
3521 UInt32 PointerToRawData;
3522 UInt32 PointerToRelocations;
3523 UInt32 PointerToLinenumbers;
3524 UInt16 NumberOfRelocations;
3525 UInt16 NumberOfLineNumbers;
3526 UInt32 Characteristics;
3527 }
3528 COFF_section;
3529
3530 #define sizeof_COFF_section 40
3531
3532
3533 typedef
3534 struct {
3535 UChar Name[8];
3536 UInt32 Value;
3537 UInt16 SectionNumber;
3538 UInt16 Type;
3539 UChar StorageClass;
3540 UChar NumberOfAuxSymbols;
3541 }
3542 COFF_symbol;
3543
3544 #define sizeof_COFF_symbol 18
3545
3546
3547 typedef
3548 struct {
3549 UInt32 VirtualAddress;
3550 UInt32 SymbolTableIndex;
3551 UInt16 Type;
3552 }
3553 COFF_reloc;
3554
3555 #define sizeof_COFF_reloc 10
3556
3557
3558 /* From PE spec doc, section 3.3.2 */
3559 /* Note use of MYIMAGE_* since IMAGE_* are already defined in
3560 windows.h -- for the same purpose, but I want to know what I'm
3561 getting, here. */
3562 #define MYIMAGE_FILE_RELOCS_STRIPPED 0x0001
3563 #define MYIMAGE_FILE_EXECUTABLE_IMAGE 0x0002
3564 #define MYIMAGE_FILE_DLL 0x2000
3565 #define MYIMAGE_FILE_SYSTEM 0x1000
3566 #define MYIMAGE_FILE_BYTES_REVERSED_HI 0x8000
3567 #define MYIMAGE_FILE_BYTES_REVERSED_LO 0x0080
3568 #define MYIMAGE_FILE_32BIT_MACHINE 0x0100
3569
3570 /* From PE spec doc, section 5.4.2 and 5.4.4 */
3571 #define MYIMAGE_SYM_CLASS_EXTERNAL 2
3572 #define MYIMAGE_SYM_CLASS_STATIC 3
3573 #define MYIMAGE_SYM_UNDEFINED 0
3574
3575 /* From PE spec doc, section 4.1 */
3576 #define MYIMAGE_SCN_CNT_CODE 0x00000020
3577 #define MYIMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
3578 #define MYIMAGE_SCN_LNK_NRELOC_OVFL 0x01000000
3579
3580 /* From PE spec doc, section 5.2.1 */
3581 #define MYIMAGE_REL_I386_DIR32 0x0006
3582 #define MYIMAGE_REL_I386_REL32 0x0014
3583
3584 /* We assume file pointer is right at the
3585 beginning of COFF object.
3586 */
3587 static char *
3588 allocateImageAndTrampolines (
3589 #if defined(x86_64_HOST_ARCH)
3590 FILE* f, pathchar* arch_name, char* member_name,
3591 #endif
3592 int size )
3593 {
3594 char* image;
3595 #if defined(x86_64_HOST_ARCH)
3596 /* PeCoff contains number of symbols right in it's header, so
3597 we can reserve the room for symbolExtras right here. */
3598 COFF_header hdr;
3599 size_t n;
3600
3601 n = fread ( &hdr, 1, sizeof_COFF_header, f );
3602 if (n != sizeof( COFF_header ))
3603 barf("getNumberOfSymbols: error whilst reading `%s' header in `%S'",
3604 member_name, arch_name);
3605 fseek( f, -sizeof_COFF_header, SEEK_CUR );
3606
3607 /* We get back 8-byte aligned memory (is that guaranteed?), but
3608 the offsets to the sections within the file are all 4 mod 8
3609 (is that guaranteed?). We therefore need to offset the image
3610 by 4, so that all the pointers are 8-byte aligned, so that
3611 pointer tagging works. */
3612 /* For 32-bit case we don't need this, hence we use macro PEi386_IMAGE_OFFSET,
3613 which equals to 4 for 64-bit case and 0 for 32-bit case. */
3614 /* We allocate trampolines area for all symbols right behind
3615 image data, aligned on 8. */
3616 size = ((PEi386_IMAGE_OFFSET + size + 0x7) & ~0x7)
3617 + hdr.NumberOfSymbols * sizeof(SymbolExtra);
3618 #endif
3619 image = VirtualAlloc(NULL, size,
3620 MEM_RESERVE | MEM_COMMIT,
3621 PAGE_EXECUTE_READWRITE);
3622 return image + PEi386_IMAGE_OFFSET;
3623 }
3624
3625 /* We use myindex to calculate array addresses, rather than
3626 simply doing the normal subscript thing. That's because
3627 some of the above structs have sizes which are not
3628 a whole number of words. GCC rounds their sizes up to a
3629 whole number of words, which means that the address calcs
3630 arising from using normal C indexing or pointer arithmetic
3631 are just plain wrong. Sigh.
3632 */
3633 static UChar *
3634 myindex ( int scale, void* base, int index )
3635 {
3636 return
3637 ((UChar*)base) + scale * index;
3638 }
3639
3640
3641 static void
3642 printName ( UChar* name, UChar* strtab )
3643 {
3644 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3645 UInt32 strtab_offset = * (UInt32*)(name+4);
3646 debugBelch("%s", strtab + strtab_offset );
3647 } else {
3648 int i;
3649 for (i = 0; i < 8; i++) {
3650 if (name[i] == 0) break;
3651 debugBelch("%c", name[i] );
3652 }
3653 }
3654 }
3655
3656
3657 static void
3658 copyName ( UChar* name, UChar* strtab, UChar* dst, int dstSize )
3659 {
3660 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3661 UInt32 strtab_offset = * (UInt32*)(name+4);
3662 strncpy ( (char*)dst, (char*)strtab+strtab_offset, dstSize );
3663 dst[dstSize-1] = 0;
3664 } else {
3665 int i = 0;
3666 while (1) {
3667 if (i >= 8) break;
3668 if (name[i] == 0) break;
3669 dst[i] = name[i];
3670 i++;
3671 }
3672 dst[i] = 0;
3673 }
3674 }
3675
3676
3677 static UChar *
3678 cstring_from_COFF_symbol_name ( UChar* name, UChar* strtab )
3679 {
3680 UChar* newstr;
3681 /* If the string is longer than 8 bytes, look in the
3682 string table for it -- this will be correctly zero terminated.
3683 */
3684 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3685 UInt32 strtab_offset = * (UInt32*)(name+4);
3686 return ((UChar*)strtab) + strtab_offset;
3687 }
3688 /* Otherwise, if shorter than 8 bytes, return the original,
3689 which by defn is correctly terminated.
3690 */
3691 if (name[7]==0) return name;
3692 /* The annoying case: 8 bytes. Copy into a temporary
3693 (XXX which is never freed ...)
3694 */
3695 newstr = stgMallocBytes(9, "cstring_from_COFF_symbol_name");
3696 ASSERT(newstr);
3697 strncpy((char*)newstr,(char*)name,8);
3698 newstr[8] = 0;
3699 return newstr;
3700 }
3701
3702 /* Getting the name of a section is mildly tricky, so we make a
3703 function for it. Sadly, in one case we have to copy the string
3704 (when it is exactly 8 bytes long there's no trailing '\0'), so for
3705 consistency we *always* copy the string; the caller must free it
3706 */
3707 static char *
3708 cstring_from_section_name (UChar* name, UChar* strtab)
3709 {
3710 char *newstr;
3711
3712 if (name[0]=='/') {
3713 int strtab_offset = strtol((char*)name+1,NULL,10);
3714 int len = strlen(((char*)strtab) + strtab_offset);
3715
3716 newstr = stgMallocBytes(len+1, "cstring_from_section_symbol_name");
3717 strcpy((char*)newstr, (char*)((UChar*)strtab) + strtab_offset);
3718 return newstr;
3719 }
3720 else
3721 {
3722 newstr = stgMallocBytes(9, "cstring_from_section_symbol_name");
3723 ASSERT(newstr);
3724 strncpy((char*)newstr,(char*)name,8);
3725 newstr[8] = 0;
3726 return newstr;
3727 }
3728 }
3729
3730 /* Just compares the short names (first 8 chars) */
3731 static COFF_section *
3732 findPEi386SectionCalled ( ObjectCode* oc, UChar* name, UChar* strtab )
3733 {
3734 int i;
3735 rtsBool long_name = rtsFalse;
3736 COFF_header* hdr
3737 = (COFF_header*)(oc->image);
3738 COFF_section* sectab
3739 = (COFF_section*) (
3740 ((UChar*)(oc->image))
3741 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3742 );
3743 // String is longer than 8 bytes, swap in the proper
3744 // (NULL-terminated) version, and make a note that this
3745 // is a long name.
3746 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3747 UInt32 strtab_offset = * (UInt32*)(name+4);
3748 name = ((UChar*)strtab) + strtab_offset;
3749 long_name = rtsTrue;
3750 }
3751 for (i = 0; i < hdr->NumberOfSections; i++) {
3752 UChar* n1;
3753 UChar* n2;
3754 COFF_section* section_i
3755 = (COFF_section*)
3756 myindex ( sizeof_COFF_section, sectab, i );
3757 n1 = (UChar*) &(section_i->Name);
3758 n2 = name;
3759 // Long section names are prefixed with a slash, see
3760 // also cstring_from_section_name
3761 if (n1[0] == '/' && long_name) {
3762 // Long name check
3763 // We don't really want to make an assumption that the string
3764 // table indexes are the same, so we'll do a proper check.
3765 int n1_strtab_offset = strtol((char*)n1+1,NULL,10);
3766 n1 = (UChar*) (((char*)strtab) + n1_strtab_offset);
3767 if (0==strcmp((const char*)n1, (const char*)n2)) {
3768 return section_i;
3769 }
3770 } else if (n1[0] != '/' && !long_name) {
3771 // Short name check
3772 if (n1[0]==n2[0] && n1[1]==n2[1] && n1[2]==n2[2] &&
3773 n1[3]==n2[3] && n1[4]==n2[4] && n1[5]==n2[5] &&
3774 n1[6]==n2[6] && n1[7]==n2[7]) {
3775 return section_i;
3776 }
3777 } else {
3778 // guaranteed to mismatch, because we never attempt to link
3779 // in an executable where the section name may be truncated
3780 }
3781 }
3782
3783 return NULL;
3784 }
3785
3786 static void
3787 zapTrailingAtSign ( UChar* sym )
3788 {
3789 # define my_isdigit(c) ((c) >= '0' && (c) <= '9')
3790 int i, j;
3791 if (sym[0] == 0) return;
3792 i = 0;
3793 while (sym[i] != 0) i++;
3794 i--;
3795 j = i;
3796 while (j > 0 && my_isdigit(sym[j])) j--;
3797 if (j > 0 && sym[j] == '@' && j != i) sym[j] = 0;
3798 # undef my_isdigit
3799 }
3800
3801 static void *
3802 lookupSymbolInDLLs ( UChar *lbl )
3803 {
3804 OpenedDLL* o_dll;
3805 void *sym;
3806
3807 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
3808 /* debugBelch("look in %s for %s\n", o_dll->name, lbl); */
3809
3810 if (lbl[0] == '_') {
3811 /* HACK: if the name has an initial underscore, try stripping
3812 it off & look that up first. I've yet to verify whether there's
3813 a Rule that governs whether an initial '_' *should always* be
3814 stripped off when mapping from import lib name to the DLL name.
3815 */
3816 sym = GetProcAddress(o_dll->instance, (char*)(lbl+1));
3817 if (sym != NULL) {
3818 /*debugBelch("found %s in %s\n", lbl+1,o_dll->name);*/
3819 return sym;
3820 }
3821 }
3822
3823 /* Ticket #2283.
3824 Long description: http://support.microsoft.com/kb/132044
3825 tl;dr:
3826 If C/C++ compiler sees __declspec(dllimport) ... foo ...
3827 it generates call *__imp_foo, and __imp_foo here has exactly
3828 the same semantics as in __imp_foo = GetProcAddress(..., "foo")
3829 */
3830 if (sym == NULL && strncmp ((const char*)lbl, "__imp_", 6) == 0) {
3831 sym = GetProcAddress(o_dll->instance, (char*)(lbl+6));
3832 if (sym != NULL) {
3833 IndirectAddr* ret;
3834 ret = stgMallocBytes( sizeof(IndirectAddr), "lookupSymbolInDLLs" );
3835 ret->addr = sym;
3836 ret->next = indirects;
3837 indirects = ret;
3838 errorBelch("warning: %s from %S is linked instead of %s",
3839 (char*)(lbl+6), o_dll->name, (char*)lbl);
3840 return (void*) & ret->addr;
3841 }
3842 }
3843
3844 sym = GetProcAddress(o_dll->instance, (char*)lbl);
3845 if (sym != NULL) {
3846 /*debugBelch("found %s in %s\n", lbl,o_dll->name);*/
3847 return sym;
3848 }
3849 }
3850 return NULL;
3851 }
3852
3853
3854 static int
3855 ocVerifyImage_PEi386 ( ObjectCode* oc )
3856 {
3857 int i;
3858 UInt32 j, noRelocs;
3859 COFF_header* hdr;
3860 COFF_section* sectab;
3861 COFF_symbol* symtab;
3862 UChar* strtab;
3863 /* debugBelch("\nLOADING %s\n", oc->fileName); */
3864 hdr = (COFF_header*)(oc->image);
3865 sectab = (COFF_section*) (
3866 ((UChar*)(oc->image))
3867 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3868 );
3869 symtab = (COFF_symbol*) (
3870 ((UChar*)(oc->image))
3871 + hdr->PointerToSymbolTable
3872 );
3873 strtab = ((UChar*)symtab)
3874 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3875
3876 #if defined(i386_HOST_ARCH)
3877 if (hdr->Machine != 0x14c) {
3878 errorBelch("%" PATH_FMT ": Not x86 PEi386", oc->fileName);
3879 return 0;
3880 }
3881 #elif defined(x86_64_HOST_ARCH)
3882 if (hdr->Machine != 0x8664) {
3883 errorBelch("%" PATH_FMT ": Not x86_64 PEi386", oc->fileName);
3884 return 0;
3885 }
3886 #else
3887 errorBelch("PEi386 not supported on this arch");
3888 #endif
3889
3890 if (hdr->SizeOfOptionalHeader != 0) {
3891 errorBelch("%" PATH_FMT ": PEi386 with nonempty optional header", oc->fileName);
3892 return 0;
3893 }
3894 if ( /* (hdr->Characteristics & MYIMAGE_FILE_RELOCS_STRIPPED) || */
3895 (hdr->Characteristics & MYIMAGE_FILE_EXECUTABLE_IMAGE) ||
3896 (hdr->Characteristics & MYIMAGE_FILE_DLL) ||
3897 (hdr->Characteristics & MYIMAGE_FILE_SYSTEM) ) {
3898 errorBelch("%" PATH_FMT ": Not a PEi386 object file", oc->fileName);
3899 return 0;
3900 }
3901 if ( (hdr->Characteristics & MYIMAGE_FILE_BYTES_REVERSED_HI)
3902 /* || !(hdr->Characteristics & MYIMAGE_FILE_32BIT_MACHINE) */ ) {
3903 errorBelch("%" PATH_FMT ": Invalid PEi386 word size or endiannness: %d",
3904 oc->fileName,
3905 (int)(hdr->Characteristics));
3906 return 0;
3907 }
3908 /* If the string table size is way crazy, this might indicate that
3909 there are more than 64k relocations, despite claims to the
3910 contrary. Hence this test. */
3911 /* debugBelch("strtab size %d\n", * (UInt32*)strtab); */
3912 #if 0
3913 if ( (*(UInt32*)strtab) > 600000 ) {
3914 /* Note that 600k has no special significance other than being
3915 big enough to handle the almost-2MB-sized lumps that
3916 constitute HSwin32*.o. */
3917 debugBelch("PEi386 object has suspiciously large string table; > 64k relocs?");
3918 return 0;
3919 }
3920 #endif
3921
3922 /* No further verification after this point; only debug printing. */
3923 i = 0;
3924 IF_DEBUG(linker, i=1);
3925 if (i == 0) return 1;
3926
3927 debugBelch( "sectab offset = %" FMT_Int "\n", ((UChar*)sectab) - ((UChar*)hdr) );
3928 debugBelch( "symtab offset = %" FMT_Int "\n", ((UChar*)symtab) - ((UChar*)hdr) );
3929 debugBelch( "strtab offset = %" FMT_Int "\n", ((UChar*)strtab) - ((UChar*)hdr) );
3930
3931 debugBelch("\n" );
3932 debugBelch( "Machine: 0x%x\n", (UInt32)(hdr->Machine) );
3933 debugBelch( "# sections: %d\n", (UInt32)(hdr->NumberOfSections) );
3934 debugBelch( "time/date: 0x%x\n", (UInt32)(hdr->TimeDateStamp) );
3935 debugBelch( "symtab offset: %d\n", (UInt32)(hdr->PointerToSymbolTable) );
3936 debugBelch( "# symbols: %d\n", (UInt32)(hdr->NumberOfSymbols) );
3937 debugBelch( "sz of opt hdr: %d\n", (UInt32)(hdr->SizeOfOptionalHeader) );
3938 debugBelch( "characteristics: 0x%x\n", (UInt32)(hdr->Characteristics) );
3939
3940 /* Print the section table. */
3941 debugBelch("\n" );
3942 for (i = 0; i < hdr->NumberOfSections; i++) {
3943 COFF_reloc* reltab;
3944 COFF_section* sectab_i
3945 = (COFF_section*)
3946 myindex ( sizeof_COFF_section, sectab, i );
3947 debugBelch(
3948 "\n"
3949 "section %d\n"
3950 " name `",
3951 i
3952 );
3953 printName ( sectab_i->Name, strtab );
3954 debugBelch(
3955 "'\n"
3956 " vsize %d\n"
3957 " vaddr %d\n"
3958 " data sz %d\n"
3959 " data off %d\n"
3960 " num rel %d\n"
3961 " off rel %d\n"
3962 " ptr raw 0x%x\n",
3963 sectab_i->VirtualSize,
3964 sectab_i->VirtualAddress,
3965 sectab_i->SizeOfRawData,
3966 sectab_i->PointerToRawData,
3967 sectab_i->NumberOfRelocations,
3968 sectab_i->PointerToRelocations,
3969 sectab_i->PointerToRawData
3970 );
3971 reltab = (COFF_reloc*) (
3972 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
3973 );
3974
3975 if ( sectab_i->Characteristics & MYIMAGE_SCN_LNK_NRELOC_OVFL ) {
3976 /* If the relocation field (a short) has overflowed, the
3977 * real count can be found in the first reloc entry.
3978 *
3979 * See Section 4.1 (last para) of the PE spec (rev6.0).
3980 */
3981 COFF_reloc* rel = (COFF_reloc*)
3982 myindex ( sizeof_COFF_reloc, reltab, 0 );
3983 noRelocs = rel->VirtualAddress;
3984 j = 1;
3985 } else {
3986 noRelocs = sectab_i->NumberOfRelocations;
3987 j = 0;
3988 }
3989
3990 for (; j < noRelocs; j++) {
3991 COFF_symbol* sym;
3992 COFF_reloc* rel = (COFF_reloc*)
3993 myindex ( sizeof_COFF_reloc, reltab, j );
3994 debugBelch(
3995 " type 0x%-4x vaddr 0x%-8x name `",
3996 (UInt32)rel->Type,
3997 rel->VirtualAddress );
3998 sym = (COFF_symbol*)
3999 myindex ( sizeof_COFF_symbol, symtab, rel->SymbolTableIndex );
4000 /* Hmm..mysterious looking offset - what's it for? SOF */
4001 printName ( sym->Name, strtab -10 );
4002 debugBelch("'\n" );
4003 }
4004
4005 debugBelch("\n" );
4006 }
4007 debugBelch("\n" );
4008 debugBelch("string table has size 0x%x\n", * (UInt32*)strtab );
4009 debugBelch("---START of string table---\n");
4010 for (i = 4; i < *(Int32*)strtab; i++) {
4011 if (strtab[i] == 0)
4012 debugBelch("\n"); else
4013 debugBelch("%c", strtab[i] );
4014 }
4015 debugBelch("--- END of string table---\n");
4016
4017 debugBelch("\n" );
4018 i = 0;
4019 while (1) {
4020 COFF_symbol* symtab_i;
4021 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
4022 symtab_i = (COFF_symbol*)
4023 myindex ( sizeof_COFF_symbol, symtab, i );
4024 debugBelch(
4025 "symbol %d\n"
4026 " name `",
4027 i
4028