Revert "Add more primops for atomic ops on byte arrays"
[ghc.git] / rts / Linker.c
1 /* -----------------------------------------------------------------------------
2 *
3 * (c) The GHC Team, 2000-2012
4 *
5 * RTS Object Linker
6 *
7 * ---------------------------------------------------------------------------*/
8
9 #if 0
10 #include "PosixSource.h"
11 #endif
12
13 /* Linux needs _GNU_SOURCE to get RTLD_DEFAULT from <dlfcn.h> and
14 MREMAP_MAYMOVE from <sys/mman.h>.
15 */
16 #if defined(__linux__) || defined(__GLIBC__)
17 #define _GNU_SOURCE 1
18 #endif
19
20 #include "Rts.h"
21 #include "HsFFI.h"
22
23 #include "sm/Storage.h"
24 #include "Stats.h"
25 #include "Hash.h"
26 #include "LinkerInternals.h"
27 #include "RtsUtils.h"
28 #include "Trace.h"
29 #include "StgPrimFloat.h" // for __int_encodeFloat etc.
30 #include "Proftimer.h"
31 #include "GetEnv.h"
32 #include "Stable.h"
33
34 #if !defined(mingw32_HOST_OS)
35 #include "posix/Signals.h"
36 #endif
37
38 // get protos for is*()
39 #include <ctype.h>
40
41 #ifdef HAVE_SYS_TYPES_H
42 #include <sys/types.h>
43 #endif
44
45 #include <inttypes.h>
46 #include <stdlib.h>
47 #include <string.h>
48 #include <stdio.h>
49 #include <assert.h>
50 #include <libgen.h>
51
52 #ifdef HAVE_SYS_STAT_H
53 #include <sys/stat.h>
54 #endif
55
56 #if defined(HAVE_DLFCN_H)
57 #include <dlfcn.h>
58 #endif
59
60 #if defined(cygwin32_HOST_OS)
61 #ifdef HAVE_DIRENT_H
62 #include <dirent.h>
63 #endif
64
65 #ifdef HAVE_SYS_TIME_H
66 #include <sys/time.h>
67 #endif
68 #include <regex.h>
69 #include <sys/fcntl.h>
70 #include <sys/termios.h>
71 #include <sys/utime.h>
72 #include <sys/utsname.h>
73 #include <sys/wait.h>
74 #endif
75
76 #if (defined(powerpc_HOST_ARCH) && defined(linux_HOST_OS)) \
77 || (!defined(powerpc_HOST_ARCH) && \
78 ( defined(linux_HOST_OS) || defined(freebsd_HOST_OS) || \
79 defined(dragonfly_HOST_OS) || defined(netbsd_HOST_OS ) || \
80 defined(openbsd_HOST_OS ) || defined(darwin_HOST_OS ) || \
81 defined(kfreebsdgnu_HOST_OS) || defined(gnu_HOST_OS)))
82 /* Don't use mmap on powerpc_HOST_ARCH as mmap doesn't support
83 * reallocating but we need to allocate jump islands just after each
84 * object images. Otherwise relative branches to jump islands can fail
85 * due to 24-bits displacement overflow.
86 */
87 #define USE_MMAP
88 #include <fcntl.h>
89 #include <sys/mman.h>
90
91 #ifdef HAVE_UNISTD_H
92 #include <unistd.h>
93 #endif
94
95 #endif
96
97
98 /* PowerPC has relative branch instructions with only 24 bit displacements
99 * and therefore needs jump islands contiguous with each object code module.
100 */
101 #if (defined(USE_MMAP) && defined(powerpc_HOST_ARCH) && defined(linux_HOST_OS))
102 #define USE_CONTIGUOUS_MMAP 1
103 #else
104 #define USE_CONTIGUOUS_MMAP 0
105 #endif
106
107 #if defined(linux_HOST_OS) || defined(solaris2_HOST_OS) || defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS) || defined(netbsd_HOST_OS) || defined(openbsd_HOST_OS) || defined(gnu_HOST_OS)
108 # define OBJFORMAT_ELF
109 # include <regex.h> // regex is already used by dlopen() so this is OK
110 // to use here without requiring an additional lib
111 #elif defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
112 # define OBJFORMAT_PEi386
113 # include <windows.h>
114 # include <math.h>
115 #elif defined(darwin_HOST_OS)
116 # define OBJFORMAT_MACHO
117 # include <regex.h>
118 # include <mach/machine.h>
119 # include <mach-o/fat.h>
120 # include <mach-o/loader.h>
121 # include <mach-o/nlist.h>
122 # include <mach-o/reloc.h>
123 #if !defined(HAVE_DLFCN_H)
124 # include <mach-o/dyld.h>
125 #endif
126 #if defined(powerpc_HOST_ARCH)
127 # include <mach-o/ppc/reloc.h>
128 #endif
129 #if defined(x86_64_HOST_ARCH)
130 # include <mach-o/x86_64/reloc.h>
131 #endif
132 #endif
133
134 #if defined(x86_64_HOST_ARCH) && defined(darwin_HOST_OS)
135 #define ALWAYS_PIC
136 #endif
137
138 #if defined(dragonfly_HOST_OS)
139 #include <sys/tls.h>
140 #endif
141
142 typedef struct _RtsSymbolInfo {
143 void *value;
144 const ObjectCode *owner;
145 HsBool weak;
146 } RtsSymbolInfo;
147
148 /* Hash table mapping symbol names to RtsSymbolInfo */
149 static /*Str*/HashTable *symhash;
150
151 /* List of currently loaded objects */
152 ObjectCode *objects = NULL; /* initially empty */
153
154 /* List of objects that have been unloaded via unloadObj(), but are waiting
155 to be actually freed via checkUnload() */
156 ObjectCode *unloaded_objects = NULL; /* initially empty */
157
158 /* Type of the initializer */
159 typedef void (*init_t) (int argc, char **argv, char **env);
160
161 static HsInt isAlreadyLoaded( pathchar *path );
162 static HsInt loadOc( ObjectCode* oc );
163 static ObjectCode* mkOc( pathchar *path, char *image, int imageSize,
164 char *archiveMemberName
165 #ifndef USE_MMAP
166 #ifdef darwin_HOST_OS
167 , int misalignment
168 #endif
169 #endif
170 );
171
172 // Use wchar_t for pathnames on Windows (#5697)
173 #if defined(mingw32_HOST_OS)
174 #define pathcmp wcscmp
175 #define pathlen wcslen
176 #define pathopen _wfopen
177 #define pathstat _wstat
178 #define struct_stat struct _stat
179 #define open wopen
180 #define WSTR(s) L##s
181 #else
182 #define pathcmp strcmp
183 #define pathlen strlen
184 #define pathopen fopen
185 #define pathstat stat
186 #define struct_stat struct stat
187 #define WSTR(s) s
188 #endif
189
190 static pathchar* pathdup(pathchar *path)
191 {
192 pathchar *ret;
193 #if defined(mingw32_HOST_OS)
194 ret = wcsdup(path);
195 #else
196 /* sigh, strdup() isn't a POSIX function, so do it the long way */
197 ret = stgMallocBytes( strlen(path)+1, "loadObj" );
198 strcpy(ret, path);
199 #endif
200 return ret;
201 }
202
203
204 #if defined(OBJFORMAT_ELF)
205 static int ocVerifyImage_ELF ( ObjectCode* oc );
206 static int ocGetNames_ELF ( ObjectCode* oc );
207 static int ocResolve_ELF ( ObjectCode* oc );
208 static int ocRunInit_ELF ( ObjectCode* oc );
209 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
210 static int ocAllocateSymbolExtras_ELF ( ObjectCode* oc );
211 #endif
212 #elif defined(OBJFORMAT_PEi386)
213 static int ocVerifyImage_PEi386 ( ObjectCode* oc );
214 static int ocGetNames_PEi386 ( ObjectCode* oc );
215 static int ocResolve_PEi386 ( ObjectCode* oc );
216 static int ocRunInit_PEi386 ( ObjectCode* oc );
217 static void *lookupSymbolInDLLs ( unsigned char *lbl );
218 static void zapTrailingAtSign ( unsigned char *sym );
219 static char *allocateImageAndTrampolines (
220 #if defined(x86_64_HOST_ARCH)
221 FILE* f, pathchar* arch_name, char* member_name,
222 #endif
223 int size );
224 #if defined(x86_64_HOST_ARCH)
225 static int ocAllocateSymbolExtras_PEi386 ( ObjectCode* oc );
226 static size_t makeSymbolExtra_PEi386( ObjectCode* oc, size_t, char* symbol );
227 #define PEi386_IMAGE_OFFSET 4
228 #else
229 #define PEi386_IMAGE_OFFSET 0
230 #endif
231 #elif defined(OBJFORMAT_MACHO)
232 static int ocVerifyImage_MachO ( ObjectCode* oc );
233 static int ocGetNames_MachO ( ObjectCode* oc );
234 static int ocResolve_MachO ( ObjectCode* oc );
235 static int ocRunInit_MachO ( ObjectCode* oc );
236
237 #ifndef USE_MMAP
238 static int machoGetMisalignment( FILE * );
239 #endif
240 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
241 static int ocAllocateSymbolExtras_MachO ( ObjectCode* oc );
242 #endif
243 #ifdef powerpc_HOST_ARCH
244 static void machoInitSymbolsWithoutUnderscore( void );
245 #endif
246 #endif
247
248 static void freeProddableBlocks (ObjectCode *oc);
249
250 /* on x86_64 we have a problem with relocating symbol references in
251 * code that was compiled without -fPIC. By default, the small memory
252 * model is used, which assumes that symbol references can fit in a
253 * 32-bit slot. The system dynamic linker makes this work for
254 * references to shared libraries by either (a) allocating a jump
255 * table slot for code references, or (b) moving the symbol at load
256 * time (and copying its contents, if necessary) for data references.
257 *
258 * We unfortunately can't tell whether symbol references are to code
259 * or data. So for now we assume they are code (the vast majority
260 * are), and allocate jump-table slots. Unfortunately this will
261 * SILENTLY generate crashing code for data references. This hack is
262 * enabled by X86_64_ELF_NONPIC_HACK.
263 *
264 * One workaround is to use shared Haskell libraries. This is
265 * coming. Another workaround is to keep the static libraries but
266 * compile them with -fPIC, because that will generate PIC references
267 * to data which can be relocated. The PIC code is still too green to
268 * do this systematically, though.
269 *
270 * See bug #781
271 * See thread http://www.haskell.org/pipermail/cvs-ghc/2007-September/038458.html
272 *
273 * Naming Scheme for Symbol Macros
274 *
275 * SymI_*: symbol is internal to the RTS. It resides in an object
276 * file/library that is statically.
277 * SymE_*: symbol is external to the RTS library. It might be linked
278 * dynamically.
279 *
280 * Sym*_HasProto : the symbol prototype is imported in an include file
281 * or defined explicitly
282 * Sym*_NeedsProto: the symbol is undefined and we add a dummy
283 * default proto extern void sym(void);
284 */
285 #define X86_64_ELF_NONPIC_HACK 1
286
287 /* Link objects into the lower 2Gb on x86_64. GHC assumes the
288 * small memory model on this architecture (see gcc docs,
289 * -mcmodel=small).
290 *
291 * MAP_32BIT not available on OpenBSD/amd64
292 */
293 #if defined(x86_64_HOST_ARCH) && defined(MAP_32BIT)
294 #define TRY_MAP_32BIT MAP_32BIT
295 #else
296 #define TRY_MAP_32BIT 0
297 #endif
298
299 /*
300 * Due to the small memory model (see above), on x86_64 we have to map
301 * all our non-PIC object files into the low 2Gb of the address space
302 * (why 2Gb and not 4Gb? Because all addresses must be reachable
303 * using a 32-bit signed PC-relative offset). On Linux we can do this
304 * using the MAP_32BIT flag to mmap(), however on other OSs
305 * (e.g. *BSD, see #2063, and also on Linux inside Xen, see #2512), we
306 * can't do this. So on these systems, we have to pick a base address
307 * in the low 2Gb of the address space and try to allocate memory from
308 * there.
309 *
310 * We pick a default address based on the OS, but also make this
311 * configurable via an RTS flag (+RTS -xm)
312 */
313 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
314
315 #if defined(MAP_32BIT)
316 // Try to use MAP_32BIT
317 #define MMAP_32BIT_BASE_DEFAULT 0
318 #else
319 // A guess: 1Gb.
320 #define MMAP_32BIT_BASE_DEFAULT 0x40000000
321 #endif
322
323 static void *mmap_32bit_base = (void *)MMAP_32BIT_BASE_DEFAULT;
324 #endif
325
326 /* MAP_ANONYMOUS is MAP_ANON on some systems, e.g. OpenBSD */
327 #if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
328 #define MAP_ANONYMOUS MAP_ANON
329 #endif
330
331 /* -----------------------------------------------------------------------------
332 * Built-in symbols from the RTS
333 */
334
335 typedef struct _RtsSymbolVal {
336 char *lbl;
337 void *addr;
338 } RtsSymbolVal;
339
340 #define Maybe_Stable_Names SymI_HasProto(stg_mkWeakzh) \
341 SymI_HasProto(stg_mkWeakNoFinalizzerzh) \
342 SymI_HasProto(stg_addCFinalizzerToWeakzh) \
343 SymI_HasProto(stg_makeStableNamezh) \
344 SymI_HasProto(stg_finalizzeWeakzh)
345
346 #if !defined (mingw32_HOST_OS)
347 #define RTS_POSIX_ONLY_SYMBOLS \
348 SymI_HasProto(__hscore_get_saved_termios) \
349 SymI_HasProto(__hscore_set_saved_termios) \
350 SymI_HasProto(shutdownHaskellAndSignal) \
351 SymI_HasProto(signal_handlers) \
352 SymI_HasProto(stg_sig_install) \
353 SymI_HasProto(rtsTimerSignal) \
354 SymI_HasProto(atexit) \
355 SymI_NeedsProto(nocldstop)
356 #endif
357
358 #if defined (cygwin32_HOST_OS)
359 #define RTS_MINGW_ONLY_SYMBOLS /**/
360 /* Don't have the ability to read import libs / archives, so
361 * we have to stupidly list a lot of what libcygwin.a
362 * exports; sigh.
363 */
364 #define RTS_CYGWIN_ONLY_SYMBOLS \
365 SymI_HasProto(regfree) \
366 SymI_HasProto(regexec) \
367 SymI_HasProto(regerror) \
368 SymI_HasProto(regcomp) \
369 SymI_HasProto(__errno) \
370 SymI_HasProto(access) \
371 SymI_HasProto(chmod) \
372 SymI_HasProto(chdir) \
373 SymI_HasProto(close) \
374 SymI_HasProto(creat) \
375 SymI_HasProto(dup) \
376 SymI_HasProto(dup2) \
377 SymI_HasProto(fstat) \
378 SymI_HasProto(fcntl) \
379 SymI_HasProto(getcwd) \
380 SymI_HasProto(getenv) \
381 SymI_HasProto(lseek) \
382 SymI_HasProto(open) \
383 SymI_HasProto(fpathconf) \
384 SymI_HasProto(pathconf) \
385 SymI_HasProto(stat) \
386 SymI_HasProto(pow) \
387 SymI_HasProto(tanh) \
388 SymI_HasProto(cosh) \
389 SymI_HasProto(sinh) \
390 SymI_HasProto(atan) \
391 SymI_HasProto(acos) \
392 SymI_HasProto(asin) \
393 SymI_HasProto(tan) \
394 SymI_HasProto(cos) \
395 SymI_HasProto(sin) \
396 SymI_HasProto(exp) \
397 SymI_HasProto(log) \
398 SymI_HasProto(sqrt) \
399 SymI_HasProto(localtime_r) \
400 SymI_HasProto(gmtime_r) \
401 SymI_HasProto(mktime) \
402 SymI_NeedsProto(_imp___tzname) \
403 SymI_HasProto(gettimeofday) \
404 SymI_HasProto(timezone) \
405 SymI_HasProto(tcgetattr) \
406 SymI_HasProto(tcsetattr) \
407 SymI_HasProto(memcpy) \
408 SymI_HasProto(memmove) \
409 SymI_HasProto(realloc) \
410 SymI_HasProto(malloc) \
411 SymI_HasProto(free) \
412 SymI_HasProto(fork) \
413 SymI_HasProto(lstat) \
414 SymI_HasProto(isatty) \
415 SymI_HasProto(mkdir) \
416 SymI_HasProto(opendir) \
417 SymI_HasProto(readdir) \
418 SymI_HasProto(rewinddir) \
419 SymI_HasProto(closedir) \
420 SymI_HasProto(link) \
421 SymI_HasProto(mkfifo) \
422 SymI_HasProto(pipe) \
423 SymI_HasProto(read) \
424 SymI_HasProto(rename) \
425 SymI_HasProto(rmdir) \
426 SymI_HasProto(select) \
427 SymI_HasProto(system) \
428 SymI_HasProto(write) \
429 SymI_HasProto(strcmp) \
430 SymI_HasProto(strcpy) \
431 SymI_HasProto(strncpy) \
432 SymI_HasProto(strerror) \
433 SymI_HasProto(sigaddset) \
434 SymI_HasProto(sigemptyset) \
435 SymI_HasProto(sigprocmask) \
436 SymI_HasProto(umask) \
437 SymI_HasProto(uname) \
438 SymI_HasProto(unlink) \
439 SymI_HasProto(utime) \
440 SymI_HasProto(waitpid)
441
442 #elif defined(mingw32_HOST_OS)
443 #define RTS_POSIX_ONLY_SYMBOLS /**/
444 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
445
446 #if HAVE_GETTIMEOFDAY
447 #define RTS_MINGW_GETTIMEOFDAY_SYM SymI_NeedsProto(gettimeofday)
448 #else
449 #define RTS_MINGW_GETTIMEOFDAY_SYM /**/
450 #endif
451
452 #if HAVE___MINGW_VFPRINTF
453 #define RTS___MINGW_VFPRINTF_SYM SymI_HasProto(__mingw_vfprintf)
454 #else
455 #define RTS___MINGW_VFPRINTF_SYM /**/
456 #endif
457
458 #if defined(i386_HOST_ARCH)
459 #define RTS_WIN32_ONLY(X) X
460 #else
461 #define RTS_WIN32_ONLY(X) /**/
462 #endif
463
464 #if defined(x86_64_HOST_ARCH)
465 #define RTS_WIN64_ONLY(X) X
466 #else
467 #define RTS_WIN64_ONLY(X) /**/
468 #endif
469
470 /* These are statically linked from the mingw libraries into the ghc
471 executable, so we have to employ this hack. */
472 #define RTS_MINGW_ONLY_SYMBOLS \
473 SymI_HasProto(stg_asyncReadzh) \
474 SymI_HasProto(stg_asyncWritezh) \
475 SymI_HasProto(stg_asyncDoProczh) \
476 SymI_HasProto(getWin32ProgArgv) \
477 SymI_HasProto(setWin32ProgArgv) \
478 SymI_HasProto(memset) \
479 SymI_HasProto(inet_ntoa) \
480 SymI_HasProto(inet_addr) \
481 SymI_HasProto(htonl) \
482 SymI_HasProto(recvfrom) \
483 SymI_HasProto(listen) \
484 SymI_HasProto(bind) \
485 SymI_HasProto(shutdown) \
486 SymI_HasProto(connect) \
487 SymI_HasProto(htons) \
488 SymI_HasProto(ntohs) \
489 SymI_HasProto(getservbyname) \
490 SymI_HasProto(getservbyport) \
491 SymI_HasProto(getprotobynumber) \
492 SymI_HasProto(getprotobyname) \
493 SymI_HasProto(gethostbyname) \
494 SymI_HasProto(gethostbyaddr) \
495 SymI_HasProto(gethostname) \
496 SymI_HasProto(strcpy) \
497 SymI_HasProto(strncpy) \
498 SymI_HasProto(abort) \
499 RTS_WIN32_ONLY(SymI_NeedsProto(_alloca)) \
500 SymI_HasProto(isxdigit) \
501 SymI_HasProto(isupper) \
502 SymI_HasProto(ispunct) \
503 SymI_HasProto(islower) \
504 SymI_HasProto(isspace) \
505 SymI_HasProto(isprint) \
506 SymI_HasProto(isdigit) \
507 SymI_HasProto(iscntrl) \
508 SymI_HasProto(isalpha) \
509 SymI_HasProto(isalnum) \
510 SymI_HasProto(isascii) \
511 RTS___MINGW_VFPRINTF_SYM \
512 SymI_HasProto(strcmp) \
513 SymI_HasProto(memmove) \
514 SymI_HasProto(realloc) \
515 SymI_HasProto(malloc) \
516 SymI_HasProto(pow) \
517 SymI_HasProto(tanh) \
518 SymI_HasProto(cosh) \
519 SymI_HasProto(sinh) \
520 SymI_HasProto(atan) \
521 SymI_HasProto(acos) \
522 SymI_HasProto(asin) \
523 SymI_HasProto(tan) \
524 SymI_HasProto(cos) \
525 SymI_HasProto(sin) \
526 SymI_HasProto(exp) \
527 SymI_HasProto(log) \
528 SymI_HasProto(sqrt) \
529 SymI_HasProto(powf) \
530 SymI_HasProto(tanhf) \
531 SymI_HasProto(coshf) \
532 SymI_HasProto(sinhf) \
533 SymI_HasProto(atanf) \
534 SymI_HasProto(acosf) \
535 SymI_HasProto(asinf) \
536 SymI_HasProto(tanf) \
537 SymI_HasProto(cosf) \
538 SymI_HasProto(sinf) \
539 SymI_HasProto(expf) \
540 SymI_HasProto(logf) \
541 SymI_HasProto(sqrtf) \
542 SymI_HasProto(erf) \
543 SymI_HasProto(erfc) \
544 SymI_HasProto(erff) \
545 SymI_HasProto(erfcf) \
546 SymI_HasProto(memcpy) \
547 SymI_HasProto(rts_InstallConsoleEvent) \
548 SymI_HasProto(rts_ConsoleHandlerDone) \
549 SymI_NeedsProto(mktime) \
550 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___timezone)) \
551 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___tzname)) \
552 RTS_WIN32_ONLY(SymI_NeedsProto(_imp__tzname)) \
553 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___iob)) \
554 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___osver)) \
555 SymI_NeedsProto(localtime) \
556 SymI_NeedsProto(gmtime) \
557 SymI_NeedsProto(opendir) \
558 SymI_NeedsProto(readdir) \
559 SymI_NeedsProto(rewinddir) \
560 RTS_WIN32_ONLY(SymI_NeedsProto(_imp____mb_cur_max)) \
561 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___pctype)) \
562 RTS_WIN32_ONLY(SymI_NeedsProto(__chkstk)) \
563 RTS_WIN64_ONLY(SymI_NeedsProto(__imp___iob_func)) \
564 RTS_WIN64_ONLY(SymI_NeedsProto(___chkstk_ms)) \
565 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_localeconv)) \
566 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_islower)) \
567 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isspace)) \
568 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isxdigit)) \
569 RTS_WIN64_ONLY(SymI_HasProto(close)) \
570 RTS_WIN64_ONLY(SymI_HasProto(read)) \
571 RTS_WIN64_ONLY(SymI_HasProto(dup)) \
572 RTS_WIN64_ONLY(SymI_HasProto(dup2)) \
573 RTS_WIN64_ONLY(SymI_HasProto(write)) \
574 SymI_NeedsProto(getpid) \
575 RTS_WIN64_ONLY(SymI_HasProto(access)) \
576 SymI_HasProto(chmod) \
577 RTS_WIN64_ONLY(SymI_HasProto(creat)) \
578 RTS_WIN64_ONLY(SymI_HasProto(umask)) \
579 SymI_HasProto(unlink) \
580 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__errno)) \
581 RTS_WIN64_ONLY(SymI_NeedsProto(ftruncate64)) \
582 RTS_WIN64_ONLY(SymI_HasProto(setmode)) \
583 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wstat64)) \
584 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__fstat64)) \
585 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wsopen)) \
586 RTS_WIN64_ONLY(SymI_HasProto(__imp__environ)) \
587 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileAttributesA)) \
588 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileInformationByHandle)) \
589 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileType)) \
590 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetLastError)) \
591 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceFrequency)) \
592 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceCounter)) \
593 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetTickCount)) \
594 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WaitForSingleObject)) \
595 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekConsoleInputA)) \
596 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ReadConsoleInputA)) \
597 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekNamedPipe)) \
598 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__isatty)) \
599 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_select)) \
600 RTS_WIN64_ONLY(SymI_HasProto(isatty)) \
601 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__get_osfhandle)) \
602 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetConsoleMode)) \
603 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetConsoleMode)) \
604 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FlushConsoleInputBuffer)) \
605 RTS_WIN64_ONLY(SymI_HasProto(free)) \
606 RTS_WIN64_ONLY(SymI_NeedsProto(raise)) \
607 RTS_WIN64_ONLY(SymI_NeedsProto(_getpid)) \
608 RTS_WIN64_ONLY(SymI_HasProto(getc)) \
609 RTS_WIN64_ONLY(SymI_HasProto(ungetc)) \
610 RTS_WIN64_ONLY(SymI_HasProto(puts)) \
611 RTS_WIN64_ONLY(SymI_HasProto(putc)) \
612 RTS_WIN64_ONLY(SymI_HasProto(putchar)) \
613 RTS_WIN64_ONLY(SymI_HasProto(fputc)) \
614 RTS_WIN64_ONLY(SymI_HasProto(fread)) \
615 RTS_WIN64_ONLY(SymI_HasProto(fwrite)) \
616 RTS_WIN64_ONLY(SymI_HasProto(ferror)) \
617 RTS_WIN64_ONLY(SymI_HasProto(printf)) \
618 RTS_WIN64_ONLY(SymI_HasProto(fprintf)) \
619 RTS_WIN64_ONLY(SymI_HasProto(sprintf)) \
620 RTS_WIN64_ONLY(SymI_HasProto(vsprintf)) \
621 RTS_WIN64_ONLY(SymI_HasProto(sscanf)) \
622 RTS_WIN64_ONLY(SymI_HasProto(ldexp)) \
623 RTS_WIN64_ONLY(SymI_HasProto(strlen)) \
624 RTS_WIN64_ONLY(SymI_HasProto(strnlen)) \
625 RTS_WIN64_ONLY(SymI_HasProto(strchr)) \
626 RTS_WIN64_ONLY(SymI_HasProto(strtol)) \
627 RTS_WIN64_ONLY(SymI_HasProto(strerror)) \
628 RTS_WIN64_ONLY(SymI_HasProto(memchr)) \
629 RTS_WIN64_ONLY(SymI_HasProto(memcmp)) \
630 RTS_WIN64_ONLY(SymI_HasProto(wcscpy)) \
631 RTS_WIN64_ONLY(SymI_HasProto(wcslen)) \
632 RTS_WIN64_ONLY(SymI_HasProto(_lseeki64)) \
633 RTS_WIN64_ONLY(SymI_HasProto(_wchmod)) \
634 RTS_WIN64_ONLY(SymI_HasProto(closesocket)) \
635 RTS_WIN64_ONLY(SymI_HasProto(send)) \
636 RTS_WIN64_ONLY(SymI_HasProto(recv)) \
637 RTS_WIN64_ONLY(SymI_HasProto(bsearch)) \
638 RTS_WIN64_ONLY(SymI_HasProto(CommandLineToArgvW)) \
639 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmap)) \
640 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmapIndirect)) \
641 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleBitmap)) \
642 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBPatternBrushPt)) \
643 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBitmap)) \
644 RTS_WIN64_ONLY(SymI_HasProto(SetBitmapDimensionEx)) \
645 RTS_WIN64_ONLY(SymI_HasProto(GetBitmapDimensionEx)) \
646 RTS_WIN64_ONLY(SymI_HasProto(GetStockObject)) \
647 RTS_WIN64_ONLY(SymI_HasProto(GetObjectW)) \
648 RTS_WIN64_ONLY(SymI_HasProto(DeleteObject)) \
649 RTS_WIN64_ONLY(SymI_HasProto(SetDIBits)) \
650 RTS_WIN64_ONLY(SymI_HasProto(GetDIBits)) \
651 RTS_WIN64_ONLY(SymI_HasProto(CreateSolidBrush)) \
652 RTS_WIN64_ONLY(SymI_HasProto(CreateHatchBrush)) \
653 RTS_WIN64_ONLY(SymI_HasProto(CreatePatternBrush)) \
654 RTS_WIN64_ONLY(SymI_HasProto(CreateFontW)) \
655 RTS_WIN64_ONLY(SymI_HasProto(AngleArc)) \
656 RTS_WIN64_ONLY(SymI_HasProto(Arc)) \
657 RTS_WIN64_ONLY(SymI_HasProto(ArcTo)) \
658 RTS_WIN64_ONLY(SymI_HasProto(BeginPath)) \
659 RTS_WIN64_ONLY(SymI_HasProto(BitBlt)) \
660 RTS_WIN64_ONLY(SymI_HasProto(CancelDC)) \
661 RTS_WIN64_ONLY(SymI_HasProto(Chord)) \
662 RTS_WIN64_ONLY(SymI_HasProto(CloseFigure)) \
663 RTS_WIN64_ONLY(SymI_HasProto(CombineRgn)) \
664 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleDC)) \
665 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgn)) \
666 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgnIndirect)) \
667 RTS_WIN64_ONLY(SymI_HasProto(CreatePen)) \
668 RTS_WIN64_ONLY(SymI_HasProto(CreatePolygonRgn)) \
669 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgn)) \
670 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgnIndirect)) \
671 RTS_WIN64_ONLY(SymI_HasProto(CreateRoundRectRgn)) \
672 RTS_WIN64_ONLY(SymI_HasProto(DeleteDC)) \
673 RTS_WIN64_ONLY(SymI_HasProto(Ellipse)) \
674 RTS_WIN64_ONLY(SymI_HasProto(EndPath)) \
675 RTS_WIN64_ONLY(SymI_HasProto(EqualRgn)) \
676 RTS_WIN64_ONLY(SymI_HasProto(ExtSelectClipRgn)) \
677 RTS_WIN64_ONLY(SymI_HasProto(FillPath)) \
678 RTS_WIN64_ONLY(SymI_HasProto(FillRgn)) \
679 RTS_WIN64_ONLY(SymI_HasProto(FlattenPath)) \
680 RTS_WIN64_ONLY(SymI_HasProto(FrameRgn)) \
681 RTS_WIN64_ONLY(SymI_HasProto(GetArcDirection)) \
682 RTS_WIN64_ONLY(SymI_HasProto(GetBkColor)) \
683 RTS_WIN64_ONLY(SymI_HasProto(GetBkMode)) \
684 RTS_WIN64_ONLY(SymI_HasProto(GetBrushOrgEx)) \
685 RTS_WIN64_ONLY(SymI_HasProto(GetCurrentObject)) \
686 RTS_WIN64_ONLY(SymI_HasProto(GetDCOrgEx)) \
687 RTS_WIN64_ONLY(SymI_HasProto(GetGraphicsMode)) \
688 RTS_WIN64_ONLY(SymI_HasProto(GetMiterLimit)) \
689 RTS_WIN64_ONLY(SymI_HasProto(GetPolyFillMode)) \
690 RTS_WIN64_ONLY(SymI_HasProto(GetRgnBox)) \
691 RTS_WIN64_ONLY(SymI_HasProto(GetStretchBltMode)) \
692 RTS_WIN64_ONLY(SymI_HasProto(GetTextAlign)) \
693 RTS_WIN64_ONLY(SymI_HasProto(GetTextCharacterExtra)) \
694 RTS_WIN64_ONLY(SymI_HasProto(GetTextColor)) \
695 RTS_WIN64_ONLY(SymI_HasProto(GetTextExtentPoint32W)) \
696 RTS_WIN64_ONLY(SymI_HasProto(InvertRgn)) \
697 RTS_WIN64_ONLY(SymI_HasProto(LineTo)) \
698 RTS_WIN64_ONLY(SymI_HasProto(MaskBlt)) \
699 RTS_WIN64_ONLY(SymI_HasProto(MoveToEx)) \
700 RTS_WIN64_ONLY(SymI_HasProto(OffsetRgn)) \
701 RTS_WIN64_ONLY(SymI_HasProto(PaintRgn)) \
702 RTS_WIN64_ONLY(SymI_HasProto(PathToRegion)) \
703 RTS_WIN64_ONLY(SymI_HasProto(Pie)) \
704 RTS_WIN64_ONLY(SymI_HasProto(PlgBlt)) \
705 RTS_WIN64_ONLY(SymI_HasProto(PolyBezier)) \
706 RTS_WIN64_ONLY(SymI_HasProto(PolyBezierTo)) \
707 RTS_WIN64_ONLY(SymI_HasProto(Polygon)) \
708 RTS_WIN64_ONLY(SymI_HasProto(Polyline)) \
709 RTS_WIN64_ONLY(SymI_HasProto(PolylineTo)) \
710 RTS_WIN64_ONLY(SymI_HasProto(PtInRegion)) \
711 RTS_WIN64_ONLY(SymI_HasProto(Rectangle)) \
712 RTS_WIN64_ONLY(SymI_HasProto(RectInRegion)) \
713 RTS_WIN64_ONLY(SymI_HasProto(RestoreDC)) \
714 RTS_WIN64_ONLY(SymI_HasProto(RoundRect)) \
715 RTS_WIN64_ONLY(SymI_HasProto(SaveDC)) \
716 RTS_WIN64_ONLY(SymI_HasProto(SelectClipPath)) \
717 RTS_WIN64_ONLY(SymI_HasProto(SelectClipRgn)) \
718 RTS_WIN64_ONLY(SymI_HasProto(SelectObject)) \
719 RTS_WIN64_ONLY(SymI_HasProto(SelectPalette)) \
720 RTS_WIN64_ONLY(SymI_HasProto(SetArcDirection)) \
721 RTS_WIN64_ONLY(SymI_HasProto(SetBkColor)) \
722 RTS_WIN64_ONLY(SymI_HasProto(SetBkMode)) \
723 RTS_WIN64_ONLY(SymI_HasProto(SetBrushOrgEx)) \
724 RTS_WIN64_ONLY(SymI_HasProto(SetGraphicsMode)) \
725 RTS_WIN64_ONLY(SymI_HasProto(SetMiterLimit)) \
726 RTS_WIN64_ONLY(SymI_HasProto(SetPolyFillMode)) \
727 RTS_WIN64_ONLY(SymI_HasProto(SetStretchBltMode)) \
728 RTS_WIN64_ONLY(SymI_HasProto(SetTextAlign)) \
729 RTS_WIN64_ONLY(SymI_HasProto(SetTextCharacterExtra)) \
730 RTS_WIN64_ONLY(SymI_HasProto(SetTextColor)) \
731 RTS_WIN64_ONLY(SymI_HasProto(StretchBlt)) \
732 RTS_WIN64_ONLY(SymI_HasProto(StrokeAndFillPath)) \
733 RTS_WIN64_ONLY(SymI_HasProto(StrokePath)) \
734 RTS_WIN64_ONLY(SymI_HasProto(TextOutW)) \
735 RTS_WIN64_ONLY(SymI_HasProto(timeGetTime)) \
736 RTS_WIN64_ONLY(SymI_HasProto(WidenPath)) \
737 RTS_WIN64_ONLY(SymI_HasProto(GetFileSecurityW)) \
738 RTS_WIN64_ONLY(SymI_HasProto(RegCloseKey)) \
739 RTS_WIN64_ONLY(SymI_HasProto(RegConnectRegistryW)) \
740 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyExW)) \
741 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyW)) \
742 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteKeyW)) \
743 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteValueW)) \
744 RTS_WIN64_ONLY(SymI_HasProto(RegEnumKeyW)) \
745 RTS_WIN64_ONLY(SymI_HasProto(RegEnumValueW)) \
746 RTS_WIN64_ONLY(SymI_HasProto(RegFlushKey)) \
747 RTS_WIN64_ONLY(SymI_HasProto(RegLoadKeyW)) \
748 RTS_WIN64_ONLY(SymI_HasProto(RegNotifyChangeKeyValue)) \
749 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyExW)) \
750 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyW)) \
751 RTS_WIN64_ONLY(SymI_HasProto(RegQueryInfoKeyW)) \
752 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueExW)) \
753 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueW)) \
754 RTS_WIN64_ONLY(SymI_HasProto(RegReplaceKeyW)) \
755 RTS_WIN64_ONLY(SymI_HasProto(RegRestoreKeyW)) \
756 RTS_WIN64_ONLY(SymI_HasProto(RegSaveKeyW)) \
757 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueExW)) \
758 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueW)) \
759 RTS_WIN64_ONLY(SymI_HasProto(RegUnLoadKeyW)) \
760 RTS_WIN64_ONLY(SymI_NeedsProto(SHGetFolderPathW)) \
761 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetWindowLongPtrW)) \
762 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetWindowLongPtrW)) \
763 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_MenuItemFromPoint)) \
764 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPoint)) \
765 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPointEx)) \
766 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DeleteObject)) \
767 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_UnmapViewOfFile)) \
768 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CloseHandle)) \
769 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FreeLibrary)) \
770 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetMessageW)) \
771 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TranslateMessage)) \
772 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DispatchMessageW)) \
773 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DefWindowProcW)) \
774 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetDIBits)) \
775 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalAlloc)) \
776 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalFree)) \
777 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateFileW)) \
778 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WriteFile)) \
779 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateCompatibleBitmap)) \
780 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SelectObject)) \
781 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_Polygon)) \
782 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FormatMessageW)) \
783 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__localtime64)) \
784 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__tzname)) \
785 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__timezone)) \
786 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreatePipe)) \
787 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetHandleInformation)) \
788 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetStdHandle)) \
789 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetCurrentProcess)) \
790 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DuplicateHandle)) \
791 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateProcessW)) \
792 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TerminateProcess)) \
793 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__open_osfhandle)) \
794 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetExitCodeProcess)) \
795 RTS_MINGW_GETTIMEOFDAY_SYM \
796 SymI_NeedsProto(closedir)
797
798 #else
799 #define RTS_MINGW_ONLY_SYMBOLS /**/
800 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
801 #endif
802
803
804 #if defined(darwin_HOST_OS) && HAVE_PRINTF_LDBLSTUB
805 #define RTS_DARWIN_ONLY_SYMBOLS \
806 SymI_NeedsProto(asprintf$LDBLStub) \
807 SymI_NeedsProto(err$LDBLStub) \
808 SymI_NeedsProto(errc$LDBLStub) \
809 SymI_NeedsProto(errx$LDBLStub) \
810 SymI_NeedsProto(fprintf$LDBLStub) \
811 SymI_NeedsProto(fscanf$LDBLStub) \
812 SymI_NeedsProto(fwprintf$LDBLStub) \
813 SymI_NeedsProto(fwscanf$LDBLStub) \
814 SymI_NeedsProto(printf$LDBLStub) \
815 SymI_NeedsProto(scanf$LDBLStub) \
816 SymI_NeedsProto(snprintf$LDBLStub) \
817 SymI_NeedsProto(sprintf$LDBLStub) \
818 SymI_NeedsProto(sscanf$LDBLStub) \
819 SymI_NeedsProto(strtold$LDBLStub) \
820 SymI_NeedsProto(swprintf$LDBLStub) \
821 SymI_NeedsProto(swscanf$LDBLStub) \
822 SymI_NeedsProto(syslog$LDBLStub) \
823 SymI_NeedsProto(vasprintf$LDBLStub) \
824 SymI_NeedsProto(verr$LDBLStub) \
825 SymI_NeedsProto(verrc$LDBLStub) \
826 SymI_NeedsProto(verrx$LDBLStub) \
827 SymI_NeedsProto(vfprintf$LDBLStub) \
828 SymI_NeedsProto(vfscanf$LDBLStub) \
829 SymI_NeedsProto(vfwprintf$LDBLStub) \
830 SymI_NeedsProto(vfwscanf$LDBLStub) \
831 SymI_NeedsProto(vprintf$LDBLStub) \
832 SymI_NeedsProto(vscanf$LDBLStub) \
833 SymI_NeedsProto(vsnprintf$LDBLStub) \
834 SymI_NeedsProto(vsprintf$LDBLStub) \
835 SymI_NeedsProto(vsscanf$LDBLStub) \
836 SymI_NeedsProto(vswprintf$LDBLStub) \
837 SymI_NeedsProto(vswscanf$LDBLStub) \
838 SymI_NeedsProto(vsyslog$LDBLStub) \
839 SymI_NeedsProto(vwarn$LDBLStub) \
840 SymI_NeedsProto(vwarnc$LDBLStub) \
841 SymI_NeedsProto(vwarnx$LDBLStub) \
842 SymI_NeedsProto(vwprintf$LDBLStub) \
843 SymI_NeedsProto(vwscanf$LDBLStub) \
844 SymI_NeedsProto(warn$LDBLStub) \
845 SymI_NeedsProto(warnc$LDBLStub) \
846 SymI_NeedsProto(warnx$LDBLStub) \
847 SymI_NeedsProto(wcstold$LDBLStub) \
848 SymI_NeedsProto(wprintf$LDBLStub) \
849 SymI_NeedsProto(wscanf$LDBLStub)
850 #else
851 #define RTS_DARWIN_ONLY_SYMBOLS
852 #endif
853
854 #ifndef SMP
855 # define MAIN_CAP_SYM SymI_HasProto(MainCapability)
856 #else
857 # define MAIN_CAP_SYM
858 #endif
859
860 #if !defined(mingw32_HOST_OS)
861 #define RTS_USER_SIGNALS_SYMBOLS \
862 SymI_HasProto(setIOManagerControlFd) \
863 SymI_HasProto(setIOManagerWakeupFd) \
864 SymI_HasProto(ioManagerWakeup) \
865 SymI_HasProto(blockUserSignals) \
866 SymI_HasProto(unblockUserSignals)
867 #else
868 #define RTS_USER_SIGNALS_SYMBOLS \
869 SymI_HasProto(ioManagerWakeup) \
870 SymI_HasProto(sendIOManagerEvent) \
871 SymI_HasProto(readIOManagerEvent) \
872 SymI_HasProto(getIOManagerEvent) \
873 SymI_HasProto(console_handler)
874 #endif
875
876 #define RTS_LIBFFI_SYMBOLS \
877 SymE_NeedsProto(ffi_prep_cif) \
878 SymE_NeedsProto(ffi_call) \
879 SymE_NeedsProto(ffi_type_void) \
880 SymE_NeedsProto(ffi_type_float) \
881 SymE_NeedsProto(ffi_type_double) \
882 SymE_NeedsProto(ffi_type_sint64) \
883 SymE_NeedsProto(ffi_type_uint64) \
884 SymE_NeedsProto(ffi_type_sint32) \
885 SymE_NeedsProto(ffi_type_uint32) \
886 SymE_NeedsProto(ffi_type_sint16) \
887 SymE_NeedsProto(ffi_type_uint16) \
888 SymE_NeedsProto(ffi_type_sint8) \
889 SymE_NeedsProto(ffi_type_uint8) \
890 SymE_NeedsProto(ffi_type_pointer)
891
892 #ifdef TABLES_NEXT_TO_CODE
893 #define RTS_RET_SYMBOLS /* nothing */
894 #else
895 #define RTS_RET_SYMBOLS \
896 SymI_HasProto(stg_enter_ret) \
897 SymI_HasProto(stg_gc_fun_ret) \
898 SymI_HasProto(stg_ap_v_ret) \
899 SymI_HasProto(stg_ap_f_ret) \
900 SymI_HasProto(stg_ap_d_ret) \
901 SymI_HasProto(stg_ap_l_ret) \
902 SymI_HasProto(stg_ap_v16_ret) \
903 SymI_HasProto(stg_ap_v32_ret) \
904 SymI_HasProto(stg_ap_v64_ret) \
905 SymI_HasProto(stg_ap_n_ret) \
906 SymI_HasProto(stg_ap_p_ret) \
907 SymI_HasProto(stg_ap_pv_ret) \
908 SymI_HasProto(stg_ap_pp_ret) \
909 SymI_HasProto(stg_ap_ppv_ret) \
910 SymI_HasProto(stg_ap_ppp_ret) \
911 SymI_HasProto(stg_ap_pppv_ret) \
912 SymI_HasProto(stg_ap_pppp_ret) \
913 SymI_HasProto(stg_ap_ppppp_ret) \
914 SymI_HasProto(stg_ap_pppppp_ret)
915 #endif
916
917 /* Modules compiled with -ticky may mention ticky counters */
918 /* This list should marry up with the one in $(TOP)/includes/stg/Ticky.h */
919 #define RTS_TICKY_SYMBOLS \
920 SymI_NeedsProto(ticky_entry_ctrs) \
921 SymI_NeedsProto(top_ct) \
922 \
923 SymI_HasProto(ENT_VIA_NODE_ctr) \
924 SymI_HasProto(ENT_STATIC_THK_SINGLE_ctr) \
925 SymI_HasProto(ENT_STATIC_THK_MANY_ctr) \
926 SymI_HasProto(ENT_DYN_THK_SINGLE_ctr) \
927 SymI_HasProto(ENT_DYN_THK_MANY_ctr) \
928 SymI_HasProto(ENT_STATIC_FUN_DIRECT_ctr) \
929 SymI_HasProto(ENT_DYN_FUN_DIRECT_ctr) \
930 SymI_HasProto(ENT_STATIC_CON_ctr) \
931 SymI_HasProto(ENT_DYN_CON_ctr) \
932 SymI_HasProto(ENT_STATIC_IND_ctr) \
933 SymI_HasProto(ENT_DYN_IND_ctr) \
934 SymI_HasProto(ENT_PERM_IND_ctr) \
935 SymI_HasProto(ENT_PAP_ctr) \
936 SymI_HasProto(ENT_AP_ctr) \
937 SymI_HasProto(ENT_AP_STACK_ctr) \
938 SymI_HasProto(ENT_BH_ctr) \
939 SymI_HasProto(ENT_LNE_ctr) \
940 SymI_HasProto(UNKNOWN_CALL_ctr) \
941 SymI_HasProto(SLOW_CALL_fast_v16_ctr) \
942 SymI_HasProto(SLOW_CALL_fast_v_ctr) \
943 SymI_HasProto(SLOW_CALL_fast_f_ctr) \
944 SymI_HasProto(SLOW_CALL_fast_d_ctr) \
945 SymI_HasProto(SLOW_CALL_fast_l_ctr) \
946 SymI_HasProto(SLOW_CALL_fast_n_ctr) \
947 SymI_HasProto(SLOW_CALL_fast_p_ctr) \
948 SymI_HasProto(SLOW_CALL_fast_pv_ctr) \
949 SymI_HasProto(SLOW_CALL_fast_pp_ctr) \
950 SymI_HasProto(SLOW_CALL_fast_ppv_ctr) \
951 SymI_HasProto(SLOW_CALL_fast_ppp_ctr) \
952 SymI_HasProto(SLOW_CALL_fast_pppv_ctr) \
953 SymI_HasProto(SLOW_CALL_fast_pppp_ctr) \
954 SymI_HasProto(SLOW_CALL_fast_ppppp_ctr) \
955 SymI_HasProto(SLOW_CALL_fast_pppppp_ctr) \
956 SymI_HasProto(VERY_SLOW_CALL_ctr) \
957 SymI_HasProto(ticky_slow_call_unevald) \
958 SymI_HasProto(SLOW_CALL_ctr) \
959 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_ctr) \
960 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_CHUNKS_ctr) \
961 SymI_HasProto(KNOWN_CALL_ctr) \
962 SymI_HasProto(KNOWN_CALL_TOO_FEW_ARGS_ctr) \
963 SymI_HasProto(KNOWN_CALL_EXTRA_ARGS_ctr) \
964 SymI_HasProto(SLOW_CALL_FUN_TOO_FEW_ctr) \
965 SymI_HasProto(SLOW_CALL_FUN_CORRECT_ctr) \
966 SymI_HasProto(SLOW_CALL_FUN_TOO_MANY_ctr) \
967 SymI_HasProto(SLOW_CALL_PAP_TOO_FEW_ctr) \
968 SymI_HasProto(SLOW_CALL_PAP_CORRECT_ctr) \
969 SymI_HasProto(SLOW_CALL_PAP_TOO_MANY_ctr) \
970 SymI_HasProto(SLOW_CALL_UNEVALD_ctr) \
971 SymI_HasProto(UPDF_OMITTED_ctr) \
972 SymI_HasProto(UPDF_PUSHED_ctr) \
973 SymI_HasProto(CATCHF_PUSHED_ctr) \
974 SymI_HasProto(UPDF_RCC_PUSHED_ctr) \
975 SymI_HasProto(UPDF_RCC_OMITTED_ctr) \
976 SymI_HasProto(UPD_SQUEEZED_ctr) \
977 SymI_HasProto(UPD_CON_IN_NEW_ctr) \
978 SymI_HasProto(UPD_CON_IN_PLACE_ctr) \
979 SymI_HasProto(UPD_PAP_IN_NEW_ctr) \
980 SymI_HasProto(UPD_PAP_IN_PLACE_ctr) \
981 SymI_HasProto(ALLOC_HEAP_ctr) \
982 SymI_HasProto(ALLOC_HEAP_tot) \
983 SymI_HasProto(HEAP_CHK_ctr) \
984 SymI_HasProto(STK_CHK_ctr) \
985 SymI_HasProto(ALLOC_RTS_ctr) \
986 SymI_HasProto(ALLOC_RTS_tot) \
987 SymI_HasProto(ALLOC_FUN_ctr) \
988 SymI_HasProto(ALLOC_FUN_adm) \
989 SymI_HasProto(ALLOC_FUN_gds) \
990 SymI_HasProto(ALLOC_FUN_slp) \
991 SymI_HasProto(UPD_NEW_IND_ctr) \
992 SymI_HasProto(UPD_NEW_PERM_IND_ctr) \
993 SymI_HasProto(UPD_OLD_IND_ctr) \
994 SymI_HasProto(UPD_OLD_PERM_IND_ctr) \
995 SymI_HasProto(UPD_CAF_BH_UPDATABLE_ctr) \
996 SymI_HasProto(UPD_CAF_BH_SINGLE_ENTRY_ctr) \
997 SymI_HasProto(GC_SEL_ABANDONED_ctr) \
998 SymI_HasProto(GC_SEL_MINOR_ctr) \
999 SymI_HasProto(GC_SEL_MAJOR_ctr) \
1000 SymI_HasProto(GC_FAILED_PROMOTION_ctr) \
1001 SymI_HasProto(ALLOC_UP_THK_ctr) \
1002 SymI_HasProto(ALLOC_SE_THK_ctr) \
1003 SymI_HasProto(ALLOC_THK_adm) \
1004 SymI_HasProto(ALLOC_THK_gds) \
1005 SymI_HasProto(ALLOC_THK_slp) \
1006 SymI_HasProto(ALLOC_CON_ctr) \
1007 SymI_HasProto(ALLOC_CON_adm) \
1008 SymI_HasProto(ALLOC_CON_gds) \
1009 SymI_HasProto(ALLOC_CON_slp) \
1010 SymI_HasProto(ALLOC_TUP_ctr) \
1011 SymI_HasProto(ALLOC_TUP_adm) \
1012 SymI_HasProto(ALLOC_TUP_gds) \
1013 SymI_HasProto(ALLOC_TUP_slp) \
1014 SymI_HasProto(ALLOC_BH_ctr) \
1015 SymI_HasProto(ALLOC_BH_adm) \
1016 SymI_HasProto(ALLOC_BH_gds) \
1017 SymI_HasProto(ALLOC_BH_slp) \
1018 SymI_HasProto(ALLOC_PRIM_ctr) \
1019 SymI_HasProto(ALLOC_PRIM_adm) \
1020 SymI_HasProto(ALLOC_PRIM_gds) \
1021 SymI_HasProto(ALLOC_PRIM_slp) \
1022 SymI_HasProto(ALLOC_PAP_ctr) \
1023 SymI_HasProto(ALLOC_PAP_adm) \
1024 SymI_HasProto(ALLOC_PAP_gds) \
1025 SymI_HasProto(ALLOC_PAP_slp) \
1026 SymI_HasProto(ALLOC_TSO_ctr) \
1027 SymI_HasProto(ALLOC_TSO_adm) \
1028 SymI_HasProto(ALLOC_TSO_gds) \
1029 SymI_HasProto(ALLOC_TSO_slp) \
1030 SymI_HasProto(RET_NEW_ctr) \
1031 SymI_HasProto(RET_OLD_ctr) \
1032 SymI_HasProto(RET_UNBOXED_TUP_ctr) \
1033 SymI_HasProto(RET_SEMI_loads_avoided)
1034
1035
1036 // On most platforms, the garbage collector rewrites references
1037 // to small integer and char objects to a set of common, shared ones.
1038 //
1039 // We don't do this when compiling to Windows DLLs at the moment because
1040 // it doesn't support cross package data references well.
1041 //
1042 #if defined(COMPILING_WINDOWS_DLL)
1043 #define RTS_INTCHAR_SYMBOLS
1044 #else
1045 #define RTS_INTCHAR_SYMBOLS \
1046 SymI_HasProto(stg_CHARLIKE_closure) \
1047 SymI_HasProto(stg_INTLIKE_closure)
1048 #endif
1049
1050
1051 #define RTS_SYMBOLS \
1052 Maybe_Stable_Names \
1053 RTS_TICKY_SYMBOLS \
1054 SymI_HasProto(StgReturn) \
1055 SymI_HasProto(stg_gc_noregs) \
1056 SymI_HasProto(stg_ret_v_info) \
1057 SymI_HasProto(stg_ret_p_info) \
1058 SymI_HasProto(stg_ret_n_info) \
1059 SymI_HasProto(stg_ret_f_info) \
1060 SymI_HasProto(stg_ret_d_info) \
1061 SymI_HasProto(stg_ret_l_info) \
1062 SymI_HasProto(stg_gc_prim_p) \
1063 SymI_HasProto(stg_gc_prim_pp) \
1064 SymI_HasProto(stg_gc_prim_n) \
1065 SymI_HasProto(stg_enter_info) \
1066 SymI_HasProto(__stg_gc_enter_1) \
1067 SymI_HasProto(stg_gc_unpt_r1) \
1068 SymI_HasProto(stg_gc_unbx_r1) \
1069 SymI_HasProto(stg_gc_f1) \
1070 SymI_HasProto(stg_gc_d1) \
1071 SymI_HasProto(stg_gc_l1) \
1072 SymI_HasProto(stg_gc_pp) \
1073 SymI_HasProto(stg_gc_ppp) \
1074 SymI_HasProto(stg_gc_pppp) \
1075 SymI_HasProto(__stg_gc_fun) \
1076 SymI_HasProto(stg_gc_fun_info) \
1077 SymI_HasProto(stg_yield_noregs) \
1078 SymI_HasProto(stg_yield_to_interpreter) \
1079 SymI_HasProto(stg_block_noregs) \
1080 SymI_HasProto(stg_block_takemvar) \
1081 SymI_HasProto(stg_block_readmvar) \
1082 SymI_HasProto(stg_block_putmvar) \
1083 MAIN_CAP_SYM \
1084 SymI_HasProto(MallocFailHook) \
1085 SymI_HasProto(OnExitHook) \
1086 SymI_HasProto(OutOfHeapHook) \
1087 SymI_HasProto(StackOverflowHook) \
1088 SymI_HasProto(addDLL) \
1089 SymI_HasProto(__int_encodeDouble) \
1090 SymI_HasProto(__word_encodeDouble) \
1091 SymI_HasProto(__int_encodeFloat) \
1092 SymI_HasProto(__word_encodeFloat) \
1093 SymI_HasProto(stg_atomicallyzh) \
1094 SymI_HasProto(barf) \
1095 SymI_HasProto(debugBelch) \
1096 SymI_HasProto(errorBelch) \
1097 SymI_HasProto(sysErrorBelch) \
1098 SymI_HasProto(stg_getMaskingStatezh) \
1099 SymI_HasProto(stg_maskAsyncExceptionszh) \
1100 SymI_HasProto(stg_maskUninterruptiblezh) \
1101 SymI_HasProto(stg_catchzh) \
1102 SymI_HasProto(stg_catchRetryzh) \
1103 SymI_HasProto(stg_catchSTMzh) \
1104 SymI_HasProto(stg_checkzh) \
1105 SymI_HasProto(closure_flags) \
1106 SymI_HasProto(cmp_thread) \
1107 SymI_HasProto(createAdjustor) \
1108 SymI_HasProto(stg_decodeDoublezu2Intzh) \
1109 SymI_HasProto(stg_decodeFloatzuIntzh) \
1110 SymI_HasProto(defaultsHook) \
1111 SymI_HasProto(stg_delayzh) \
1112 SymI_HasProto(stg_deRefWeakzh) \
1113 SymI_HasProto(stg_deRefStablePtrzh) \
1114 SymI_HasProto(dirty_MUT_VAR) \
1115 SymI_HasProto(dirty_TVAR) \
1116 SymI_HasProto(stg_forkzh) \
1117 SymI_HasProto(stg_forkOnzh) \
1118 SymI_HasProto(forkProcess) \
1119 SymI_HasProto(forkOS_createThread) \
1120 SymI_HasProto(freeHaskellFunctionPtr) \
1121 SymI_HasProto(getOrSetGHCConcSignalSignalHandlerStore) \
1122 SymI_HasProto(getOrSetGHCConcWindowsPendingDelaysStore) \
1123 SymI_HasProto(getOrSetGHCConcWindowsIOManagerThreadStore) \
1124 SymI_HasProto(getOrSetGHCConcWindowsProddingStore) \
1125 SymI_HasProto(getOrSetSystemEventThreadEventManagerStore) \
1126 SymI_HasProto(getOrSetSystemEventThreadIOManagerThreadStore) \
1127 SymI_HasProto(getOrSetSystemTimerThreadEventManagerStore) \
1128 SymI_HasProto(getOrSetSystemTimerThreadIOManagerThreadStore) \
1129 SymI_HasProto(getOrSetLibHSghcFastStringTable) \
1130 SymI_HasProto(getGCStats) \
1131 SymI_HasProto(getGCStatsEnabled) \
1132 SymI_HasProto(genericRaise) \
1133 SymI_HasProto(getProgArgv) \
1134 SymI_HasProto(getFullProgArgv) \
1135 SymI_HasProto(getStablePtr) \
1136 SymI_HasProto(foreignExportStablePtr) \
1137 SymI_HasProto(hs_init) \
1138 SymI_HasProto(hs_exit) \
1139 SymI_HasProto(hs_set_argv) \
1140 SymI_HasProto(hs_add_root) \
1141 SymI_HasProto(hs_perform_gc) \
1142 SymI_HasProto(hs_lock_stable_tables) \
1143 SymI_HasProto(hs_unlock_stable_tables) \
1144 SymI_HasProto(hs_free_stable_ptr) \
1145 SymI_HasProto(hs_free_stable_ptr_unsafe) \
1146 SymI_HasProto(hs_free_fun_ptr) \
1147 SymI_HasProto(hs_hpc_rootModule) \
1148 SymI_HasProto(hs_hpc_module) \
1149 SymI_HasProto(initLinker) \
1150 SymI_HasProto(initLinker_) \
1151 SymI_HasProto(stg_unpackClosurezh) \
1152 SymI_HasProto(stg_getApStackValzh) \
1153 SymI_HasProto(stg_getSparkzh) \
1154 SymI_HasProto(stg_numSparkszh) \
1155 SymI_HasProto(stg_isCurrentThreadBoundzh) \
1156 SymI_HasProto(stg_isEmptyMVarzh) \
1157 SymI_HasProto(stg_killThreadzh) \
1158 SymI_HasProto(loadArchive) \
1159 SymI_HasProto(loadObj) \
1160 SymI_HasProto(insertSymbol) \
1161 SymI_HasProto(lookupSymbol) \
1162 SymI_HasProto(stg_makeStablePtrzh) \
1163 SymI_HasProto(stg_mkApUpd0zh) \
1164 SymI_HasProto(stg_myThreadIdzh) \
1165 SymI_HasProto(stg_labelThreadzh) \
1166 SymI_HasProto(stg_newArrayzh) \
1167 SymI_HasProto(stg_copyArrayzh) \
1168 SymI_HasProto(stg_copyMutableArrayzh) \
1169 SymI_HasProto(stg_copyArrayArrayzh) \
1170 SymI_HasProto(stg_copyMutableArrayArrayzh) \
1171 SymI_HasProto(stg_cloneArrayzh) \
1172 SymI_HasProto(stg_cloneMutableArrayzh) \
1173 SymI_HasProto(stg_freezzeArrayzh) \
1174 SymI_HasProto(stg_thawArrayzh) \
1175 SymI_HasProto(stg_newArrayArrayzh) \
1176 SymI_HasProto(stg_casArrayzh) \
1177 SymI_HasProto(stg_newSmallArrayzh) \
1178 SymI_HasProto(stg_unsafeThawSmallArrayzh) \
1179 SymI_HasProto(stg_cloneSmallArrayzh) \
1180 SymI_HasProto(stg_cloneSmallMutableArrayzh) \
1181 SymI_HasProto(stg_freezzeSmallArrayzh) \
1182 SymI_HasProto(stg_thawSmallArrayzh) \
1183 SymI_HasProto(stg_copySmallArrayzh) \
1184 SymI_HasProto(stg_copySmallMutableArrayzh) \
1185 SymI_HasProto(stg_casSmallArrayzh) \
1186 SymI_HasProto(stg_newBCOzh) \
1187 SymI_HasProto(stg_newByteArrayzh) \
1188 SymI_HasProto(stg_casIntArrayzh) \
1189 SymI_HasProto(stg_fetchAddIntArrayzh) \
1190 SymI_HasProto(stg_newMVarzh) \
1191 SymI_HasProto(stg_newMutVarzh) \
1192 SymI_HasProto(stg_newTVarzh) \
1193 SymI_HasProto(stg_noDuplicatezh) \
1194 SymI_HasProto(stg_atomicModifyMutVarzh) \
1195 SymI_HasProto(stg_casMutVarzh) \
1196 SymI_HasProto(stg_newPinnedByteArrayzh) \
1197 SymI_HasProto(stg_newAlignedPinnedByteArrayzh) \
1198 SymI_HasProto(newSpark) \
1199 SymI_HasProto(performGC) \
1200 SymI_HasProto(performMajorGC) \
1201 SymI_HasProto(prog_argc) \
1202 SymI_HasProto(prog_argv) \
1203 SymI_HasProto(stg_putMVarzh) \
1204 SymI_HasProto(stg_raisezh) \
1205 SymI_HasProto(stg_raiseIOzh) \
1206 SymI_HasProto(stg_readTVarzh) \
1207 SymI_HasProto(stg_readTVarIOzh) \
1208 SymI_HasProto(resumeThread) \
1209 SymI_HasProto(setNumCapabilities) \
1210 SymI_HasProto(getNumberOfProcessors) \
1211 SymI_HasProto(resolveObjs) \
1212 SymI_HasProto(stg_retryzh) \
1213 SymI_HasProto(rts_apply) \
1214 SymI_HasProto(rts_checkSchedStatus) \
1215 SymI_HasProto(rts_eval) \
1216 SymI_HasProto(rts_evalIO) \
1217 SymI_HasProto(rts_evalLazyIO) \
1218 SymI_HasProto(rts_evalStableIO) \
1219 SymI_HasProto(rts_eval_) \
1220 SymI_HasProto(rts_getBool) \
1221 SymI_HasProto(rts_getChar) \
1222 SymI_HasProto(rts_getDouble) \
1223 SymI_HasProto(rts_getFloat) \
1224 SymI_HasProto(rts_getInt) \
1225 SymI_HasProto(rts_getInt8) \
1226 SymI_HasProto(rts_getInt16) \
1227 SymI_HasProto(rts_getInt32) \
1228 SymI_HasProto(rts_getInt64) \
1229 SymI_HasProto(rts_getPtr) \
1230 SymI_HasProto(rts_getFunPtr) \
1231 SymI_HasProto(rts_getStablePtr) \
1232 SymI_HasProto(rts_getThreadId) \
1233 SymI_HasProto(rts_getWord) \
1234 SymI_HasProto(rts_getWord8) \
1235 SymI_HasProto(rts_getWord16) \
1236 SymI_HasProto(rts_getWord32) \
1237 SymI_HasProto(rts_getWord64) \
1238 SymI_HasProto(rts_lock) \
1239 SymI_HasProto(rts_mkBool) \
1240 SymI_HasProto(rts_mkChar) \
1241 SymI_HasProto(rts_mkDouble) \
1242 SymI_HasProto(rts_mkFloat) \
1243 SymI_HasProto(rts_mkInt) \
1244 SymI_HasProto(rts_mkInt8) \
1245 SymI_HasProto(rts_mkInt16) \
1246 SymI_HasProto(rts_mkInt32) \
1247 SymI_HasProto(rts_mkInt64) \
1248 SymI_HasProto(rts_mkPtr) \
1249 SymI_HasProto(rts_mkFunPtr) \
1250 SymI_HasProto(rts_mkStablePtr) \
1251 SymI_HasProto(rts_mkString) \
1252 SymI_HasProto(rts_mkWord) \
1253 SymI_HasProto(rts_mkWord8) \
1254 SymI_HasProto(rts_mkWord16) \
1255 SymI_HasProto(rts_mkWord32) \
1256 SymI_HasProto(rts_mkWord64) \
1257 SymI_HasProto(rts_unlock) \
1258 SymI_HasProto(rts_unsafeGetMyCapability) \
1259 SymI_HasProto(rtsSupportsBoundThreads) \
1260 SymI_HasProto(rts_isProfiled) \
1261 SymI_HasProto(rts_isDynamic) \
1262 SymI_HasProto(setProgArgv) \
1263 SymI_HasProto(startupHaskell) \
1264 SymI_HasProto(shutdownHaskell) \
1265 SymI_HasProto(shutdownHaskellAndExit) \
1266 SymI_HasProto(stable_name_table) \
1267 SymI_HasProto(stable_ptr_table) \
1268 SymI_HasProto(stackOverflow) \
1269 SymI_HasProto(stg_CAF_BLACKHOLE_info) \
1270 SymI_HasProto(stg_BLACKHOLE_info) \
1271 SymI_HasProto(__stg_EAGER_BLACKHOLE_info) \
1272 SymI_HasProto(stg_BLOCKING_QUEUE_CLEAN_info) \
1273 SymI_HasProto(stg_BLOCKING_QUEUE_DIRTY_info) \
1274 SymI_HasProto(startTimer) \
1275 SymI_HasProto(stg_MVAR_CLEAN_info) \
1276 SymI_HasProto(stg_MVAR_DIRTY_info) \
1277 SymI_HasProto(stg_TVAR_CLEAN_info) \
1278 SymI_HasProto(stg_TVAR_DIRTY_info) \
1279 SymI_HasProto(stg_IND_STATIC_info) \
1280 SymI_HasProto(stg_ARR_WORDS_info) \
1281 SymI_HasProto(stg_MUT_ARR_PTRS_DIRTY_info) \
1282 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN_info) \
1283 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN0_info) \
1284 SymI_HasProto(stg_SMALL_MUT_ARR_PTRS_DIRTY_info) \
1285 SymI_HasProto(stg_SMALL_MUT_ARR_PTRS_FROZEN_info) \
1286 SymI_HasProto(stg_SMALL_MUT_ARR_PTRS_FROZEN0_info) \
1287 SymI_HasProto(stg_MUT_VAR_CLEAN_info) \
1288 SymI_HasProto(stg_MUT_VAR_DIRTY_info) \
1289 SymI_HasProto(stg_WEAK_info) \
1290 SymI_HasProto(stg_ap_v_info) \
1291 SymI_HasProto(stg_ap_f_info) \
1292 SymI_HasProto(stg_ap_d_info) \
1293 SymI_HasProto(stg_ap_l_info) \
1294 SymI_HasProto(stg_ap_v16_info) \
1295 SymI_HasProto(stg_ap_v32_info) \
1296 SymI_HasProto(stg_ap_v64_info) \
1297 SymI_HasProto(stg_ap_n_info) \
1298 SymI_HasProto(stg_ap_p_info) \
1299 SymI_HasProto(stg_ap_pv_info) \
1300 SymI_HasProto(stg_ap_pp_info) \
1301 SymI_HasProto(stg_ap_ppv_info) \
1302 SymI_HasProto(stg_ap_ppp_info) \
1303 SymI_HasProto(stg_ap_pppv_info) \
1304 SymI_HasProto(stg_ap_pppp_info) \
1305 SymI_HasProto(stg_ap_ppppp_info) \
1306 SymI_HasProto(stg_ap_pppppp_info) \
1307 SymI_HasProto(stg_ap_0_fast) \
1308 SymI_HasProto(stg_ap_v_fast) \
1309 SymI_HasProto(stg_ap_f_fast) \
1310 SymI_HasProto(stg_ap_d_fast) \
1311 SymI_HasProto(stg_ap_l_fast) \
1312 SymI_HasProto(stg_ap_v16_fast) \
1313 SymI_HasProto(stg_ap_v32_fast) \
1314 SymI_HasProto(stg_ap_v64_fast) \
1315 SymI_HasProto(stg_ap_n_fast) \
1316 SymI_HasProto(stg_ap_p_fast) \
1317 SymI_HasProto(stg_ap_pv_fast) \
1318 SymI_HasProto(stg_ap_pp_fast) \
1319 SymI_HasProto(stg_ap_ppv_fast) \
1320 SymI_HasProto(stg_ap_ppp_fast) \
1321 SymI_HasProto(stg_ap_pppv_fast) \
1322 SymI_HasProto(stg_ap_pppp_fast) \
1323 SymI_HasProto(stg_ap_ppppp_fast) \
1324 SymI_HasProto(stg_ap_pppppp_fast) \
1325 SymI_HasProto(stg_ap_1_upd_info) \
1326 SymI_HasProto(stg_ap_2_upd_info) \
1327 SymI_HasProto(stg_ap_3_upd_info) \
1328 SymI_HasProto(stg_ap_4_upd_info) \
1329 SymI_HasProto(stg_ap_5_upd_info) \
1330 SymI_HasProto(stg_ap_6_upd_info) \
1331 SymI_HasProto(stg_ap_7_upd_info) \
1332 SymI_HasProto(stg_exit) \
1333 SymI_HasProto(stg_sel_0_upd_info) \
1334 SymI_HasProto(stg_sel_1_upd_info) \
1335 SymI_HasProto(stg_sel_2_upd_info) \
1336 SymI_HasProto(stg_sel_3_upd_info) \
1337 SymI_HasProto(stg_sel_4_upd_info) \
1338 SymI_HasProto(stg_sel_5_upd_info) \
1339 SymI_HasProto(stg_sel_6_upd_info) \
1340 SymI_HasProto(stg_sel_7_upd_info) \
1341 SymI_HasProto(stg_sel_8_upd_info) \
1342 SymI_HasProto(stg_sel_9_upd_info) \
1343 SymI_HasProto(stg_sel_10_upd_info) \
1344 SymI_HasProto(stg_sel_11_upd_info) \
1345 SymI_HasProto(stg_sel_12_upd_info) \
1346 SymI_HasProto(stg_sel_13_upd_info) \
1347 SymI_HasProto(stg_sel_14_upd_info) \
1348 SymI_HasProto(stg_sel_15_upd_info) \
1349 SymI_HasProto(stg_sel_0_noupd_info) \
1350 SymI_HasProto(stg_sel_1_noupd_info) \
1351 SymI_HasProto(stg_sel_2_noupd_info) \
1352 SymI_HasProto(stg_sel_3_noupd_info) \
1353 SymI_HasProto(stg_sel_4_noupd_info) \
1354 SymI_HasProto(stg_sel_5_noupd_info) \
1355 SymI_HasProto(stg_sel_6_noupd_info) \
1356 SymI_HasProto(stg_sel_7_noupd_info) \
1357 SymI_HasProto(stg_sel_8_noupd_info) \
1358 SymI_HasProto(stg_sel_9_noupd_info) \
1359 SymI_HasProto(stg_sel_10_noupd_info) \
1360 SymI_HasProto(stg_sel_11_noupd_info) \
1361 SymI_HasProto(stg_sel_12_noupd_info) \
1362 SymI_HasProto(stg_sel_13_noupd_info) \
1363 SymI_HasProto(stg_sel_14_noupd_info) \
1364 SymI_HasProto(stg_sel_15_noupd_info) \
1365 SymI_HasProto(stg_upd_frame_info) \
1366 SymI_HasProto(stg_bh_upd_frame_info) \
1367 SymI_HasProto(suspendThread) \
1368 SymI_HasProto(stg_takeMVarzh) \
1369 SymI_HasProto(stg_readMVarzh) \
1370 SymI_HasProto(stg_threadStatuszh) \
1371 SymI_HasProto(stg_tryPutMVarzh) \
1372 SymI_HasProto(stg_tryTakeMVarzh) \
1373 SymI_HasProto(stg_tryReadMVarzh) \
1374 SymI_HasProto(stg_unmaskAsyncExceptionszh) \
1375 SymI_HasProto(unloadObj) \
1376 SymI_HasProto(stg_unsafeThawArrayzh) \
1377 SymI_HasProto(stg_waitReadzh) \
1378 SymI_HasProto(stg_waitWritezh) \
1379 SymI_HasProto(stg_writeTVarzh) \
1380 SymI_HasProto(stg_yieldzh) \
1381 SymI_NeedsProto(stg_interp_constr_entry) \
1382 SymI_HasProto(stg_arg_bitmaps) \
1383 SymI_HasProto(large_alloc_lim) \
1384 SymI_HasProto(g0) \
1385 SymI_HasProto(allocate) \
1386 SymI_HasProto(allocateExec) \
1387 SymI_HasProto(flushExec) \
1388 SymI_HasProto(freeExec) \
1389 SymI_HasProto(getAllocations) \
1390 SymI_HasProto(revertCAFs) \
1391 SymI_HasProto(RtsFlags) \
1392 SymI_NeedsProto(rts_breakpoint_io_action) \
1393 SymI_NeedsProto(rts_stop_next_breakpoint) \
1394 SymI_NeedsProto(rts_stop_on_exception) \
1395 SymI_HasProto(stopTimer) \
1396 SymI_HasProto(n_capabilities) \
1397 SymI_HasProto(enabled_capabilities) \
1398 SymI_HasProto(stg_traceCcszh) \
1399 SymI_HasProto(stg_traceEventzh) \
1400 SymI_HasProto(stg_traceMarkerzh) \
1401 SymI_HasProto(getMonotonicNSec) \
1402 SymI_HasProto(lockFile) \
1403 SymI_HasProto(unlockFile) \
1404 SymI_HasProto(startProfTimer) \
1405 SymI_HasProto(stopProfTimer) \
1406 SymI_HasProto(atomic_inc) \
1407 SymI_HasProto(atomic_dec) \
1408 RTS_USER_SIGNALS_SYMBOLS \
1409 RTS_INTCHAR_SYMBOLS
1410
1411
1412 // 64-bit support functions in libgcc.a
1413 #if defined(__GNUC__) && SIZEOF_VOID_P <= 4 && !defined(_ABIN32)
1414 #define RTS_LIBGCC_SYMBOLS \
1415 SymI_NeedsProto(__divdi3) \
1416 SymI_NeedsProto(__udivdi3) \
1417 SymI_NeedsProto(__moddi3) \
1418 SymI_NeedsProto(__umoddi3) \
1419 SymI_NeedsProto(__muldi3) \
1420 SymI_NeedsProto(__ashldi3) \
1421 SymI_NeedsProto(__ashrdi3) \
1422 SymI_NeedsProto(__lshrdi3) \
1423 SymI_NeedsProto(__fixunsdfdi)
1424 #else
1425 #define RTS_LIBGCC_SYMBOLS
1426 #endif
1427
1428 #if defined(darwin_HOST_OS) && defined(powerpc_HOST_ARCH)
1429 // Symbols that don't have a leading underscore
1430 // on Mac OS X. They have to receive special treatment,
1431 // see machoInitSymbolsWithoutUnderscore()
1432 #define RTS_MACHO_NOUNDERLINE_SYMBOLS \
1433 SymI_NeedsProto(saveFP) \
1434 SymI_NeedsProto(restFP)
1435 #endif
1436
1437 /* entirely bogus claims about types of these symbols */
1438 #define SymI_NeedsProto(vvv) extern void vvv(void);
1439 #if defined(COMPILING_WINDOWS_DLL)
1440 #define SymE_HasProto(vvv) SymE_HasProto(vvv);
1441 # if defined(x86_64_HOST_ARCH)
1442 # define SymE_NeedsProto(vvv) extern void __imp_ ## vvv (void);
1443 # else
1444 # define SymE_NeedsProto(vvv) extern void _imp__ ## vvv (void);
1445 # endif
1446 #else
1447 #define SymE_NeedsProto(vvv) SymI_NeedsProto(vvv);
1448 #define SymE_HasProto(vvv) SymI_HasProto(vvv)
1449 #endif
1450 #define SymI_HasProto(vvv) /**/
1451 #define SymI_HasProto_redirect(vvv,xxx) /**/
1452 RTS_SYMBOLS
1453 RTS_RET_SYMBOLS
1454 RTS_POSIX_ONLY_SYMBOLS
1455 RTS_MINGW_ONLY_SYMBOLS
1456 RTS_CYGWIN_ONLY_SYMBOLS
1457 RTS_DARWIN_ONLY_SYMBOLS
1458 RTS_LIBGCC_SYMBOLS
1459 RTS_LIBFFI_SYMBOLS
1460 #undef SymI_NeedsProto
1461 #undef SymI_HasProto
1462 #undef SymI_HasProto_redirect
1463 #undef SymE_HasProto
1464 #undef SymE_NeedsProto
1465
1466 #ifdef LEADING_UNDERSCORE
1467 #define MAYBE_LEADING_UNDERSCORE_STR(s) ("_" s)
1468 #else
1469 #define MAYBE_LEADING_UNDERSCORE_STR(s) (s)
1470 #endif
1471
1472 #define SymI_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1473 (void*)(&(vvv)) },
1474 #define SymE_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1475 (void*)DLL_IMPORT_DATA_REF(vvv) },
1476
1477 #define SymI_NeedsProto(vvv) SymI_HasProto(vvv)
1478 #define SymE_NeedsProto(vvv) SymE_HasProto(vvv)
1479
1480 // SymI_HasProto_redirect allows us to redirect references to one symbol to
1481 // another symbol. See newCAF/newDynCAF for an example.
1482 #define SymI_HasProto_redirect(vvv,xxx) \
1483 { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1484 (void*)(&(xxx)) },
1485
1486 static RtsSymbolVal rtsSyms[] = {
1487 RTS_SYMBOLS
1488 RTS_RET_SYMBOLS
1489 RTS_POSIX_ONLY_SYMBOLS
1490 RTS_MINGW_ONLY_SYMBOLS
1491 RTS_CYGWIN_ONLY_SYMBOLS
1492 RTS_DARWIN_ONLY_SYMBOLS
1493 RTS_LIBGCC_SYMBOLS
1494 RTS_LIBFFI_SYMBOLS
1495 #if defined(darwin_HOST_OS) && defined(i386_HOST_ARCH)
1496 // dyld stub code contains references to this,
1497 // but it should never be called because we treat
1498 // lazy pointers as nonlazy.
1499 { "dyld_stub_binding_helper", (void*)0xDEADBEEF },
1500 #endif
1501 { 0, 0 } /* sentinel */
1502 };
1503
1504
1505 /* -----------------------------------------------------------------------------
1506 * Insert symbols into hash tables, checking for duplicates.
1507 */
1508
1509 static void ghciInsertSymbolTable(
1510 pathchar* obj_name,
1511 HashTable *table,
1512 char* key,
1513 void *data,
1514 HsBool weak,
1515 ObjectCode *owner)
1516 {
1517 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1518 if (!pinfo) /* new entry */
1519 {
1520 pinfo = stgMallocBytes(sizeof (*pinfo), "ghciInsertToSymbolTable");
1521 pinfo->value = data;
1522 pinfo->owner = owner;
1523 pinfo->weak = weak;
1524 insertStrHashTable(table, key, pinfo);
1525 return;
1526 } else if ((!pinfo->weak || pinfo->value) && weak) {
1527 return; /* duplicate weak symbol, throw it away */
1528 } else if (pinfo->weak) /* weak symbol is in the table */
1529 {
1530 /* override the weak definition with the non-weak one */
1531 pinfo->value = data;
1532 pinfo->owner = owner;
1533 pinfo->weak = HS_BOOL_FALSE;
1534 return;
1535 }
1536 debugBelch(
1537 "\n\n"
1538 "GHCi runtime linker: fatal error: I found a duplicate definition for symbol\n"
1539 " %s\n"
1540 "whilst processing object file\n"
1541 " %" PATH_FMT "\n"
1542 "This could be caused by:\n"
1543 " * Loading two different object files which export the same symbol\n"
1544 " * Specifying the same object file twice on the GHCi command line\n"
1545 " * An incorrect `package.conf' entry, causing some object to be\n"
1546 " loaded twice.\n"
1547 "GHCi cannot safely continue in this situation. Exiting now. Sorry.\n"
1548 "\n",
1549 (char*)key,
1550 obj_name
1551 );
1552 stg_exit(1);
1553 }
1554
1555 static HsBool ghciLookupSymbolTable(HashTable *table,
1556 const char *key, void **result)
1557 {
1558 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1559 if (!pinfo) {
1560 *result = NULL;
1561 return HS_BOOL_FALSE;
1562 }
1563 if (pinfo->weak)
1564 IF_DEBUG(linker, debugBelch("lookup: promoting %s\n", key));
1565 /* Once it's looked up, it can no longer be overridden */
1566 pinfo->weak = HS_BOOL_FALSE;
1567
1568 *result = pinfo->value;
1569 return HS_BOOL_TRUE;
1570 }
1571
1572 static void ghciRemoveSymbolTable(HashTable *table, const char *key,
1573 ObjectCode *owner)
1574 {
1575 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1576 if (!pinfo || owner != pinfo->owner) return;
1577 removeStrHashTable(table, key, NULL);
1578 stgFree(pinfo);
1579 }
1580 /* -----------------------------------------------------------------------------
1581 * initialize the object linker
1582 */
1583
1584
1585 static int linker_init_done = 0 ;
1586
1587 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1588 static void *dl_prog_handle;
1589 static regex_t re_invalid;
1590 static regex_t re_realso;
1591 #ifdef THREADED_RTS
1592 static Mutex dl_mutex; // mutex to protect dlopen/dlerror critical section
1593 #endif
1594 #endif
1595
1596 void initLinker (void)
1597 {
1598 // default to retaining CAFs for backwards compatibility. Most
1599 // users will want initLinker_(0): otherwise unloadObj() will not
1600 // be able to unload object files when they contain CAFs.
1601 initLinker_(1);
1602 }
1603
1604 void
1605 initLinker_ (int retain_cafs)
1606 {
1607 RtsSymbolVal *sym;
1608 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1609 int compileResult;
1610 #endif
1611
1612 IF_DEBUG(linker, debugBelch("initLinker: start\n"));
1613
1614 /* Make initLinker idempotent, so we can call it
1615 before every relevant operation; that means we
1616 don't need to initialise the linker separately */
1617 if (linker_init_done == 1) {
1618 IF_DEBUG(linker, debugBelch("initLinker: idempotent return\n"));
1619 return;
1620 } else {
1621 linker_init_done = 1;
1622 }
1623
1624 objects = NULL;
1625 unloaded_objects = NULL;
1626
1627 #if defined(THREADED_RTS) && (defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO))
1628 initMutex(&dl_mutex);
1629 #endif
1630 symhash = allocStrHashTable();
1631
1632 /* populate the symbol table with stuff from the RTS */
1633 for (sym = rtsSyms; sym->lbl != NULL; sym++) {
1634 ghciInsertSymbolTable(WSTR("(GHCi built-in symbols)"),
1635 symhash, sym->lbl, sym->addr, HS_BOOL_FALSE, NULL);
1636 IF_DEBUG(linker, debugBelch("initLinker: inserting rts symbol %s, %p\n", sym->lbl, sym->addr));
1637 }
1638 # if defined(OBJFORMAT_MACHO) && defined(powerpc_HOST_ARCH)
1639 machoInitSymbolsWithoutUnderscore();
1640 # endif
1641 /* GCC defines a special symbol __dso_handle which is resolved to NULL if
1642 referenced from a statically linked module. We need to mimic this, but
1643 we cannot use NULL because we use it to mean nonexistent symbols. So we
1644 use an arbitrary (hopefully unique) address here.
1645 */
1646 ghciInsertSymbolTable(WSTR("(GHCi special symbols)"),
1647 symhash, "__dso_handle", (void *)0x12345687, HS_BOOL_FALSE, NULL);
1648
1649 // Redurect newCAF to newDynCAF if retain_cafs is true.
1650 ghciInsertSymbolTable(WSTR("(GHCi built-in symbols)"), symhash,
1651 MAYBE_LEADING_UNDERSCORE_STR("newCAF"),
1652 retain_cafs ? newDynCAF : newCAF,
1653 HS_BOOL_FALSE, NULL);
1654
1655 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1656 # if defined(RTLD_DEFAULT)
1657 dl_prog_handle = RTLD_DEFAULT;
1658 # else
1659 dl_prog_handle = dlopen(NULL, RTLD_LAZY);
1660 # endif /* RTLD_DEFAULT */
1661
1662 compileResult = regcomp(&re_invalid,
1663 "(([^ \t()])+\\.so([^ \t:()])*):([ \t])*(invalid ELF header|file too short)",
1664 REG_EXTENDED);
1665 if (compileResult != 0) {
1666 barf("Compiling re_invalid failed");
1667 }
1668 compileResult = regcomp(&re_realso,
1669 "(GROUP|INPUT) *\\( *([^ )]+)",
1670 REG_EXTENDED);
1671 if (compileResult != 0) {
1672 barf("Compiling re_realso failed");
1673 }
1674 # endif
1675
1676 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1677 if (RtsFlags.MiscFlags.linkerMemBase != 0) {
1678 // User-override for mmap_32bit_base
1679 mmap_32bit_base = (void*)RtsFlags.MiscFlags.linkerMemBase;
1680 }
1681 #endif
1682
1683 #if defined(mingw32_HOST_OS)
1684 /*
1685 * These two libraries cause problems when added to the static link,
1686 * but are necessary for resolving symbols in GHCi, hence we load
1687 * them manually here.
1688 */
1689 addDLL(WSTR("msvcrt"));
1690 addDLL(WSTR("kernel32"));
1691 #endif
1692
1693 IF_DEBUG(linker, debugBelch("initLinker: done\n"));
1694 return;
1695 }
1696
1697 void
1698 exitLinker( void ) {
1699 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1700 if (linker_init_done == 1) {
1701 regfree(&re_invalid);
1702 regfree(&re_realso);
1703 #ifdef THREADED_RTS
1704 closeMutex(&dl_mutex);
1705 #endif
1706 }
1707 #endif
1708 }
1709
1710 /* -----------------------------------------------------------------------------
1711 * Loading DLL or .so dynamic libraries
1712 * -----------------------------------------------------------------------------
1713 *
1714 * Add a DLL from which symbols may be found. In the ELF case, just
1715 * do RTLD_GLOBAL-style add, so no further messing around needs to
1716 * happen in order that symbols in the loaded .so are findable --
1717 * lookupSymbol() will subsequently see them by dlsym on the program's
1718 * dl-handle. Returns NULL if success, otherwise ptr to an err msg.
1719 *
1720 * In the PEi386 case, open the DLLs and put handles to them in a
1721 * linked list. When looking for a symbol, try all handles in the
1722 * list. This means that we need to load even DLLs that are guaranteed
1723 * to be in the ghc.exe image already, just so we can get a handle
1724 * to give to loadSymbol, so that we can find the symbols. For such
1725 * libraries, the LoadLibrary call should be a no-op except for returning
1726 * the handle.
1727 *
1728 */
1729
1730 #if defined(OBJFORMAT_PEi386)
1731 /* A record for storing handles into DLLs. */
1732
1733 typedef
1734 struct _OpenedDLL {
1735 pathchar* name;
1736 struct _OpenedDLL* next;
1737 HINSTANCE instance;
1738 }
1739 OpenedDLL;
1740
1741 /* A list thereof. */
1742 static OpenedDLL* opened_dlls = NULL;
1743
1744 /* A record for storing indirectly linked functions from DLLs. */
1745 typedef
1746 struct _IndirectAddr {
1747 void* addr;
1748 struct _IndirectAddr* next;
1749 }
1750 IndirectAddr;
1751
1752 /* A list thereof. */
1753 static IndirectAddr* indirects = NULL;
1754
1755 #endif
1756
1757 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1758
1759 /* Suppose in ghci we load a temporary SO for a module containing
1760 f = 1
1761 and then modify the module, recompile, and load another temporary
1762 SO with
1763 f = 2
1764 Then as we don't unload the first SO, dlsym will find the
1765 f = 1
1766 symbol whereas we want the
1767 f = 2
1768 symbol. We therefore need to keep our own SO handle list, and
1769 try SOs in the right order. */
1770
1771 typedef
1772 struct _OpenedSO {
1773 struct _OpenedSO* next;
1774 void *handle;
1775 }
1776 OpenedSO;
1777
1778 /* A list thereof. */
1779 static OpenedSO* openedSOs = NULL;
1780
1781 static const char *
1782 internal_dlopen(const char *dll_name)
1783 {
1784 OpenedSO* o_so;
1785 void *hdl;
1786 const char *errmsg;
1787 char *errmsg_copy;
1788
1789 // omitted: RTLD_NOW
1790 // see http://www.haskell.org/pipermail/cvs-ghc/2007-September/038570.html
1791 IF_DEBUG(linker,
1792 debugBelch("internal_dlopen: dll_name = '%s'\n", dll_name));
1793
1794 //-------------- Begin critical section ------------------
1795 // This critical section is necessary because dlerror() is not
1796 // required to be reentrant (see POSIX -- IEEE Std 1003.1-2008)
1797 // Also, the error message returned must be copied to preserve it
1798 // (see POSIX also)
1799
1800 ACQUIRE_LOCK(&dl_mutex);
1801 hdl = dlopen(dll_name, RTLD_LAZY|RTLD_LOCAL); /* see Note [RTLD_LOCAL] */
1802
1803 errmsg = NULL;
1804 if (hdl == NULL) {
1805 /* dlopen failed; return a ptr to the error msg. */
1806 errmsg = dlerror();
1807 if (errmsg == NULL) errmsg = "addDLL: unknown error";
1808 errmsg_copy = stgMallocBytes(strlen(errmsg)+1, "addDLL");
1809 strcpy(errmsg_copy, errmsg);
1810 errmsg = errmsg_copy;
1811 } else {
1812 o_so = stgMallocBytes(sizeof(OpenedSO), "addDLL");
1813 o_so->handle = hdl;
1814 o_so->next = openedSOs;
1815 openedSOs = o_so;
1816 }
1817
1818 RELEASE_LOCK(&dl_mutex);
1819 //--------------- End critical section -------------------
1820
1821 return errmsg;
1822 }
1823
1824 /*
1825 Note [RTLD_LOCAL]
1826
1827 In GHCi we want to be able to override previous .so's with newly
1828 loaded .so's when we recompile something. This further implies that
1829 when we look up a symbol in internal_dlsym() we have to iterate
1830 through the loaded libraries (in order from most recently loaded to
1831 oldest) looking up the symbol in each one until we find it.
1832
1833 However, this can cause problems for some symbols that are copied
1834 by the linker into the executable image at runtime - see #8935 for a
1835 lengthy discussion. To solve that problem we need to look up
1836 symbols in the main executable *first*, before attempting to look
1837 them up in the loaded .so's. But in order to make that work, we
1838 have to always call dlopen with RTLD_LOCAL, so that the loaded
1839 libraries don't populate the global symbol table.
1840 */
1841
1842 static void *
1843 internal_dlsym(const char *symbol) {
1844 OpenedSO* o_so;
1845 void *v;
1846
1847 // We acquire dl_mutex as concurrent dl* calls may alter dlerror
1848 ACQUIRE_LOCK(&dl_mutex);
1849 dlerror();
1850 // look in program first
1851 v = dlsym(dl_prog_handle, symbol);
1852 if (dlerror() == NULL) {
1853 RELEASE_LOCK(&dl_mutex);
1854 return v;
1855 }
1856
1857 for (o_so = openedSOs; o_so != NULL; o_so = o_so->next) {
1858 v = dlsym(o_so->handle, symbol);
1859 if (dlerror() == NULL) {
1860 RELEASE_LOCK(&dl_mutex);
1861 return v;
1862 }
1863 }
1864 RELEASE_LOCK(&dl_mutex);
1865 return v;
1866 }
1867 # endif
1868
1869 const char *
1870 addDLL( pathchar *dll_name )
1871 {
1872 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1873 /* ------------------- ELF DLL loader ------------------- */
1874
1875 #define NMATCH 5
1876 regmatch_t match[NMATCH];
1877 const char *errmsg;
1878 FILE* fp;
1879 size_t match_length;
1880 #define MAXLINE 1000
1881 char line[MAXLINE];
1882 int result;
1883
1884 initLinker();
1885
1886 IF_DEBUG(linker, debugBelch("addDLL: dll_name = '%s'\n", dll_name));
1887 errmsg = internal_dlopen(dll_name);
1888
1889 if (errmsg == NULL) {
1890 return NULL;
1891 }
1892
1893 // GHC Trac ticket #2615
1894 // On some systems (e.g., Gentoo Linux) dynamic files (e.g. libc.so)
1895 // contain linker scripts rather than ELF-format object code. This
1896 // code handles the situation by recognizing the real object code
1897 // file name given in the linker script.
1898 //
1899 // If an "invalid ELF header" error occurs, it is assumed that the
1900 // .so file contains a linker script instead of ELF object code.
1901 // In this case, the code looks for the GROUP ( ... ) linker
1902 // directive. If one is found, the first file name inside the
1903 // parentheses is treated as the name of a dynamic library and the
1904 // code attempts to dlopen that file. If this is also unsuccessful,
1905 // an error message is returned.
1906
1907 // see if the error message is due to an invalid ELF header
1908 IF_DEBUG(linker, debugBelch("errmsg = '%s'\n", errmsg));
1909 result = regexec(&re_invalid, errmsg, (size_t) NMATCH, match, 0);
1910 IF_DEBUG(linker, debugBelch("result = %i\n", result));
1911 if (result == 0) {
1912 // success -- try to read the named file as a linker script
1913 match_length = (size_t) stg_min((match[1].rm_eo - match[1].rm_so),
1914 MAXLINE-1);
1915 strncpy(line, (errmsg+(match[1].rm_so)),match_length);
1916 line[match_length] = '\0'; // make sure string is null-terminated
1917 IF_DEBUG(linker, debugBelch ("file name = '%s'\n", line));
1918 if ((fp = fopen(line, "r")) == NULL) {
1919 return errmsg; // return original error if open fails
1920 }
1921 // try to find a GROUP or INPUT ( ... ) command
1922 while (fgets(line, MAXLINE, fp) != NULL) {
1923 IF_DEBUG(linker, debugBelch("input line = %s", line));
1924 if (regexec(&re_realso, line, (size_t) NMATCH, match, 0) == 0) {
1925 // success -- try to dlopen the first named file
1926 IF_DEBUG(linker, debugBelch("match%s\n",""));
1927 line[match[2].rm_eo] = '\0';
1928 stgFree((void*)errmsg); // Free old message before creating new one
1929 errmsg = internal_dlopen(line+match[2].rm_so);
1930 break;
1931 }
1932 // if control reaches here, no GROUP or INPUT ( ... ) directive
1933 // was found and the original error message is returned to the
1934 // caller
1935 }
1936 fclose(fp);
1937 }
1938 return errmsg;
1939
1940 # elif defined(OBJFORMAT_PEi386)
1941 /* ------------------- Win32 DLL loader ------------------- */
1942
1943 pathchar* buf;
1944 OpenedDLL* o_dll;
1945 HINSTANCE instance;
1946
1947 initLinker();
1948
1949 /* debugBelch("\naddDLL; dll_name = `%s'\n", dll_name); */
1950
1951 /* See if we've already got it, and ignore if so. */
1952 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
1953 if (0 == pathcmp(o_dll->name, dll_name))
1954 return NULL;
1955 }
1956
1957 /* The file name has no suffix (yet) so that we can try
1958 both foo.dll and foo.drv
1959
1960 The documentation for LoadLibrary says:
1961 If no file name extension is specified in the lpFileName
1962 parameter, the default library extension .dll is
1963 appended. However, the file name string can include a trailing
1964 point character (.) to indicate that the module name has no
1965 extension. */
1966
1967 buf = stgMallocBytes((pathlen(dll_name) + 10) * sizeof(wchar_t), "addDLL");
1968 swprintf(buf, L"%s.DLL", dll_name);
1969 instance = LoadLibraryW(buf);
1970 if (instance == NULL) {
1971 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1972 // KAA: allow loading of drivers (like winspool.drv)
1973 swprintf(buf, L"%s.DRV", dll_name);
1974 instance = LoadLibraryW(buf);
1975 if (instance == NULL) {
1976 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1977 // #1883: allow loading of unix-style libfoo.dll DLLs
1978 swprintf(buf, L"lib%s.DLL", dll_name);
1979 instance = LoadLibraryW(buf);
1980 if (instance == NULL) {
1981 goto error;
1982 }
1983 }
1984 }
1985 stgFree(buf);
1986
1987 /* Add this DLL to the list of DLLs in which to search for symbols. */
1988 o_dll = stgMallocBytes( sizeof(OpenedDLL), "addDLL" );
1989 o_dll->name = pathdup(dll_name);
1990 o_dll->instance = instance;
1991 o_dll->next = opened_dlls;
1992 opened_dlls = o_dll;
1993
1994 return NULL;
1995
1996 error:
1997 stgFree(buf);
1998 sysErrorBelch("%" PATH_FMT, dll_name);
1999
2000 /* LoadLibrary failed; return a ptr to the error msg. */
2001 return "addDLL: could not load DLL";
2002
2003 # else
2004 barf("addDLL: not implemented on this platform");
2005 # endif
2006 }
2007
2008 /* -----------------------------------------------------------------------------
2009 * insert a symbol in the hash table
2010 */
2011 void
2012 insertSymbol(pathchar* obj_name, char* key, void* data)
2013 {
2014 ghciInsertSymbolTable(obj_name, symhash, key, data, HS_BOOL_FALSE, NULL);
2015 }
2016
2017 /* -----------------------------------------------------------------------------
2018 * lookup a symbol in the hash table
2019 */
2020 void *
2021 lookupSymbol( char *lbl )
2022 {
2023 void *val;
2024 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s\n", lbl));
2025 initLinker() ;
2026 ASSERT(symhash != NULL);
2027
2028 if (!ghciLookupSymbolTable(symhash, lbl, &val)) {
2029 IF_DEBUG(linker, debugBelch("lookupSymbol: symbol not found\n"));
2030 # if defined(OBJFORMAT_ELF)
2031 return internal_dlsym(lbl);
2032 # elif defined(OBJFORMAT_MACHO)
2033 # if HAVE_DLFCN_H
2034 /* On OS X 10.3 and later, we use dlsym instead of the old legacy
2035 interface.
2036
2037 HACK: On OS X, all symbols are prefixed with an underscore.
2038 However, dlsym wants us to omit the leading underscore from the
2039 symbol name -- the dlsym routine puts it back on before searching
2040 for the symbol. For now, we simply strip it off here (and ONLY
2041 here).
2042 */
2043 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s with dlsym\n", lbl));
2044 ASSERT(lbl[0] == '_');
2045 return internal_dlsym(lbl + 1);
2046 # else
2047 if (NSIsSymbolNameDefined(lbl)) {
2048 NSSymbol symbol = NSLookupAndBindSymbol(lbl);
2049 return NSAddressOfSymbol(symbol);
2050 } else {
2051 return NULL;
2052 }
2053 # endif /* HAVE_DLFCN_H */
2054 # elif defined(OBJFORMAT_PEi386)
2055 void* sym;
2056
2057 sym = lookupSymbolInDLLs((unsigned char*)lbl);
2058 if (sym != NULL) { return sym; };
2059
2060 // Also try looking up the symbol without the @N suffix. Some
2061 // DLLs have the suffixes on their symbols, some don't.
2062 zapTrailingAtSign ( (unsigned char*)lbl );
2063 sym = lookupSymbolInDLLs((unsigned char*)lbl);
2064 if (sym != NULL) { return sym; };
2065 return NULL;
2066
2067 # else
2068 ASSERT(2+2 == 5);
2069 return NULL;
2070 # endif
2071 } else {
2072 IF_DEBUG(linker, debugBelch("lookupSymbol: value of %s is %p\n", lbl, val));
2073 return val;
2074 }
2075 }
2076
2077 /* -----------------------------------------------------------------------------
2078 Create a StablePtr for a foreign export. This is normally called by
2079 a C function with __attribute__((constructor)), which is generated
2080 by GHC and linked into the module.
2081
2082 If the object code is being loaded dynamically, then we remember
2083 which StablePtrs were allocated by the constructors and free them
2084 again in unloadObj().
2085 -------------------------------------------------------------------------- */
2086
2087 static ObjectCode *loading_obj = NULL;
2088
2089 StgStablePtr foreignExportStablePtr (StgPtr p)
2090 {
2091 ForeignExportStablePtr *fe_sptr;
2092 StgStablePtr *sptr;
2093
2094 sptr = getStablePtr(p);
2095
2096 if (loading_obj != NULL) {
2097 fe_sptr = stgMallocBytes(sizeof(ForeignExportStablePtr),
2098 "foreignExportStablePtr");
2099 fe_sptr->stable_ptr = sptr;
2100 fe_sptr->next = loading_obj->stable_ptrs;
2101 loading_obj->stable_ptrs = fe_sptr;
2102 }
2103
2104 return sptr;
2105 }
2106
2107
2108 /* -----------------------------------------------------------------------------
2109 * Debugging aid: look in GHCi's object symbol tables for symbols
2110 * within DELTA bytes of the specified address, and show their names.
2111 */
2112 #ifdef DEBUG
2113 void ghci_enquire ( char* addr );
2114
2115 void ghci_enquire ( char* addr )
2116 {
2117 int i;
2118 char* sym;
2119 char* a;
2120 const int DELTA = 64;
2121 ObjectCode* oc;
2122
2123 initLinker();
2124
2125 for (oc = objects; oc; oc = oc->next) {
2126 for (i = 0; i < oc->n_symbols; i++) {
2127 sym = oc->symbols[i];
2128 if (sym == NULL) continue;
2129 a = NULL;
2130 if (a == NULL) {
2131 ghciLookupSymbolTable(symhash, sym, (void **)&a);
2132 }
2133 if (a == NULL) {
2134 // debugBelch("ghci_enquire: can't find %s\n", sym);
2135 }
2136 else if (addr-DELTA <= a && a <= addr+DELTA) {
2137 debugBelch("%p + %3d == `%s'\n", addr, (int)(a - addr), sym);
2138 }
2139 }
2140 }
2141 }
2142 #endif
2143
2144 #ifdef USE_MMAP
2145 #define ROUND_UP(x,size) ((x + size - 1) & ~(size - 1))
2146
2147 static void *
2148 mmapForLinker (size_t bytes, nat flags, int fd)
2149 {
2150 void *map_addr = NULL;
2151 void *result;
2152 int pagesize, size;
2153 static nat fixed = 0;
2154
2155 IF_DEBUG(linker, debugBelch("mmapForLinker: start\n"));
2156 pagesize = getpagesize();
2157 size = ROUND_UP(bytes, pagesize);
2158
2159 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2160 mmap_again:
2161
2162 if (mmap_32bit_base != 0) {
2163 map_addr = mmap_32bit_base;
2164 }
2165 #endif
2166
2167 IF_DEBUG(linker, debugBelch("mmapForLinker: \tprotection %#0x\n", PROT_EXEC | PROT_READ | PROT_WRITE));
2168 IF_DEBUG(linker, debugBelch("mmapForLinker: \tflags %#0x\n", MAP_PRIVATE | TRY_MAP_32BIT | fixed | flags));
2169 result = mmap(map_addr, size, PROT_EXEC|PROT_READ|PROT_WRITE,
2170 MAP_PRIVATE|TRY_MAP_32BIT|fixed|flags, fd, 0);
2171
2172 if (result == MAP_FAILED) {
2173 sysErrorBelch("mmap %" FMT_Word " bytes at %p",(W_)size,map_addr);
2174 errorBelch("Try specifying an address with +RTS -xm<addr> -RTS");
2175 stg_exit(EXIT_FAILURE);
2176 }
2177
2178 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2179 if (mmap_32bit_base != 0) {
2180 if (result == map_addr) {
2181 mmap_32bit_base = (StgWord8*)map_addr + size;
2182 } else {
2183 if ((W_)result > 0x80000000) {
2184 // oops, we were given memory over 2Gb
2185 #if defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS)
2186 // Some platforms require MAP_FIXED. This is normally
2187 // a bad idea, because MAP_FIXED will overwrite
2188 // existing mappings.
2189 munmap(result,size);
2190 fixed = MAP_FIXED;
2191 goto mmap_again;
2192 #else
2193 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);
2194 #endif
2195 } else {
2196 // hmm, we were given memory somewhere else, but it's
2197 // still under 2Gb so we can use it. Next time, ask
2198 // for memory right after the place we just got some
2199 mmap_32bit_base = (StgWord8*)result + size;
2200 }
2201 }
2202 } else {
2203 if ((W_)result > 0x80000000) {
2204 // oops, we were given memory over 2Gb
2205 // ... try allocating memory somewhere else?;
2206 debugTrace(DEBUG_linker,"MAP_32BIT didn't work; gave us %lu bytes at 0x%p", bytes, result);
2207 munmap(result, size);
2208
2209 // Set a base address and try again... (guess: 1Gb)
2210 mmap_32bit_base = (void*)0x40000000;
2211 goto mmap_again;
2212 }
2213 }
2214 #endif
2215
2216 IF_DEBUG(linker, debugBelch("mmapForLinker: mapped %" FMT_Word " bytes starting at %p\n", (W_)size, result));
2217 IF_DEBUG(linker, debugBelch("mmapForLinker: done\n"));
2218 return result;
2219 }
2220 #endif // USE_MMAP
2221
2222
2223 void freeObjectCode (ObjectCode *oc)
2224 {
2225 #ifdef USE_MMAP
2226 int pagesize, size, r;
2227
2228 pagesize = getpagesize();
2229 size = ROUND_UP(oc->fileSize, pagesize);
2230
2231 r = munmap(oc->image, size);
2232 if (r == -1) {
2233 sysErrorBelch("munmap");
2234 }
2235
2236 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2237 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2238 if (!USE_CONTIGUOUS_MMAP)
2239 {
2240 munmap(oc->symbol_extras,
2241 ROUND_UP(sizeof(SymbolExtra) * oc->n_symbol_extras, pagesize));
2242 }
2243 #endif
2244 #endif
2245
2246 #else
2247
2248 #ifndef mingw32_HOST_OS
2249 stgFree(oc->image);
2250 #else
2251 VirtualFree(oc->image - PEi386_IMAGE_OFFSET, 0, MEM_RELEASE);
2252
2253 IndirectAddr *ia, *ia_next;
2254 ia = indirects;
2255 while (ia != NULL) {
2256 ia_next = ia->next;
2257 stgFree(ia);
2258 ia = ia_next;
2259 }
2260
2261 #endif
2262
2263 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2264 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2265 stgFree(oc->symbol_extras);
2266 #endif
2267 #endif
2268
2269 #endif
2270
2271 stgFree(oc->fileName);
2272 stgFree(oc->archiveMemberName);
2273 stgFree(oc);
2274 }
2275
2276
2277 static ObjectCode*
2278 mkOc( pathchar *path, char *image, int imageSize,
2279 char *archiveMemberName
2280 #ifndef USE_MMAP
2281 #ifdef darwin_HOST_OS
2282 , int misalignment
2283 #endif
2284 #endif
2285 ) {
2286 ObjectCode* oc;
2287
2288 IF_DEBUG(linker, debugBelch("mkOc: start\n"));
2289 oc = stgMallocBytes(sizeof(ObjectCode), "loadArchive(oc)");
2290
2291 # if defined(OBJFORMAT_ELF)
2292 oc->formatName = "ELF";
2293 # elif defined(OBJFORMAT_PEi386)
2294 oc->formatName = "PEi386";
2295 # elif defined(OBJFORMAT_MACHO)
2296 oc->formatName = "Mach-O";
2297 # else
2298 stgFree(oc);
2299 barf("loadObj: not implemented on this platform");
2300 # endif
2301
2302 oc->image = image;
2303 oc->fileName = pathdup(path);
2304
2305 if (archiveMemberName) {
2306 oc->archiveMemberName = stgMallocBytes( strlen(archiveMemberName)+1, "loadObj" );
2307 strcpy(oc->archiveMemberName, archiveMemberName);
2308 }
2309 else {
2310 oc->archiveMemberName = NULL;
2311 }
2312
2313 oc->fileSize = imageSize;
2314 oc->symbols = NULL;
2315 oc->sections = NULL;
2316 oc->proddables = NULL;
2317 oc->stable_ptrs = NULL;
2318
2319 #ifndef USE_MMAP
2320 #ifdef darwin_HOST_OS
2321 oc->misalignment = misalignment;
2322 #endif
2323 #endif
2324
2325 /* chain it onto the list of objects */
2326 oc->next = objects;
2327 objects = oc;
2328
2329 IF_DEBUG(linker, debugBelch("mkOc: done\n"));
2330 return oc;
2331 }
2332
2333 /* -----------------------------------------------------------------------------
2334 * Check if an object or archive is already loaded.
2335 *
2336 * Returns: 1 if the path is already loaded, 0 otherwise.
2337 */
2338 static HsInt
2339 isAlreadyLoaded( pathchar *path )
2340 {
2341 ObjectCode *o;
2342 for (o = objects; o; o = o->next) {
2343 if (0 == pathcmp(o->fileName, path)) {
2344 return 1; /* already loaded */
2345 }
2346 }
2347 return 0; /* not loaded yet */
2348 }
2349
2350 HsInt
2351 loadArchive( pathchar *path )
2352 {
2353 ObjectCode* oc;
2354 char *image;
2355 int memberSize;
2356 FILE *f;
2357 int n;
2358 size_t thisFileNameSize;
2359 char *fileName;
2360 size_t fileNameSize;
2361 int isObject, isGnuIndex, isThin;
2362 char tmp[20];
2363 char *gnuFileIndex;
2364 int gnuFileIndexSize;
2365 #if defined(darwin_HOST_OS)
2366 int i;
2367 uint32_t nfat_arch, nfat_offset, cputype, cpusubtype;
2368 #if defined(i386_HOST_ARCH)
2369 const uint32_t mycputype = CPU_TYPE_X86;
2370 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_ALL;
2371 #elif defined(x86_64_HOST_ARCH)
2372 const uint32_t mycputype = CPU_TYPE_X86_64;
2373 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_64_ALL;
2374 #elif defined(powerpc_HOST_ARCH)
2375 const uint32_t mycputype = CPU_TYPE_POWERPC;
2376 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2377 #elif defined(powerpc64_HOST_ARCH)
2378 const uint32_t mycputype = CPU_TYPE_POWERPC64;
2379 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2380 #else
2381 #error Unknown Darwin architecture
2382 #endif
2383 #if !defined(USE_MMAP)
2384 int misalignment;
2385 #endif
2386 #endif
2387
2388 initLinker();
2389
2390 IF_DEBUG(linker, debugBelch("loadArchive: start\n"));
2391 IF_DEBUG(linker, debugBelch("loadArchive: Loading archive `%" PATH_FMT" '\n", path));
2392
2393 /* Check that we haven't already loaded this archive.
2394 Ignore requests to load multiple times */
2395 if (isAlreadyLoaded(path)) {
2396 IF_DEBUG(linker,
2397 debugBelch("ignoring repeated load of %" PATH_FMT "\n", path));
2398 return 1; /* success */
2399 }
2400
2401 gnuFileIndex = NULL;
2402 gnuFileIndexSize = 0;
2403
2404 fileNameSize = 32;
2405 fileName = stgMallocBytes(fileNameSize, "loadArchive(fileName)");
2406
2407 isThin = 0;
2408
2409 f = pathopen(path, WSTR("rb"));
2410 if (!f)
2411 barf("loadObj: can't read `%s'", path);
2412
2413 /* Check if this is an archive by looking for the magic "!<arch>\n"
2414 * string. Usually, if this fails, we barf and quit. On Darwin however,
2415 * we may have a fat archive, which contains archives for more than
2416 * one architecture. Fat archives start with the magic number 0xcafebabe,
2417 * always stored big endian. If we find a fat_header, we scan through
2418 * the fat_arch structs, searching through for one for our host
2419 * architecture. If a matching struct is found, we read the offset
2420 * of our archive data (nfat_offset) and seek forward nfat_offset bytes
2421 * from the start of the file.
2422 *
2423 * A subtlety is that all of the members of the fat_header and fat_arch
2424 * structs are stored big endian, so we need to call byte order
2425 * conversion functions.
2426 *
2427 * If we find the appropriate architecture in a fat archive, we gobble
2428 * its magic "!<arch>\n" string and continue processing just as if
2429 * we had a single architecture archive.
2430 */
2431
2432 n = fread ( tmp, 1, 8, f );
2433 if (n != 8)
2434 barf("loadArchive: Failed reading header from `%s'", path);
2435 if (strncmp(tmp, "!<arch>\n", 8) == 0) {}
2436 #if !defined(mingw32_HOST_OS)
2437 /* See Note [thin archives on Windows] */
2438 else if (strncmp(tmp, "!<thin>\n", 8) == 0) {
2439 isThin = 1;
2440 }
2441 #endif
2442 #if defined(darwin_HOST_OS)
2443 /* Not a standard archive, look for a fat archive magic number: */
2444 else if (ntohl(*(uint32_t *)tmp) == FAT_MAGIC) {
2445 nfat_arch = ntohl(*(uint32_t *)(tmp + 4));
2446 IF_DEBUG(linker, debugBelch("loadArchive: found a fat archive containing %d architectures\n", nfat_arch));
2447 nfat_offset = 0;
2448
2449 for (i = 0; i < (int)nfat_arch; i++) {
2450 /* search for the right arch */
2451 n = fread( tmp, 1, 20, f );
2452 if (n != 8)
2453 barf("loadArchive: Failed reading arch from `%s'", path);
2454 cputype = ntohl(*(uint32_t *)tmp);
2455 cpusubtype = ntohl(*(uint32_t *)(tmp + 4));
2456
2457 if (cputype == mycputype && cpusubtype == mycpusubtype) {
2458 IF_DEBUG(linker, debugBelch("loadArchive: found my archive in a fat archive\n"));
2459 nfat_offset = ntohl(*(uint32_t *)(tmp + 8));
2460 break;
2461 }
2462 }
2463
2464 if (nfat_offset == 0) {
2465 barf ("loadArchive: searched %d architectures, but no host arch found", (int)nfat_arch);
2466 }
2467 else {
2468 n = fseek( f, nfat_offset, SEEK_SET );
2469 if (n != 0)
2470 barf("loadArchive: Failed to seek to arch in `%s'", path);
2471 n = fread ( tmp, 1, 8, f );
2472 if (n != 8)
2473 barf("loadArchive: Failed reading header from `%s'", path);
2474 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2475 barf("loadArchive: couldn't find archive in `%s' at offset %d", path, nfat_offset);
2476 }
2477 }
2478 }
2479 else {
2480 barf("loadArchive: Neither an archive, nor a fat archive: `%s'", path);
2481 }
2482 #else
2483 else {
2484 barf("loadArchive: Not an archive: `%s'", path);
2485 }
2486 #endif
2487
2488 IF_DEBUG(linker, debugBelch("loadArchive: loading archive contents\n"));
2489
2490 while(1) {
2491 n = fread ( fileName, 1, 16, f );
2492 if (n != 16) {
2493 if (feof(f)) {
2494 IF_DEBUG(linker, debugBelch("loadArchive: EOF while reading from '%" PATH_FMT "'\n", path));
2495 break;
2496 }
2497 else {
2498 barf("loadArchive: Failed reading file name from `%s'", path);
2499 }
2500 }
2501
2502 #if defined(darwin_HOST_OS)
2503 if (strncmp(fileName, "!<arch>\n", 8) == 0) {
2504 IF_DEBUG(linker, debugBelch("loadArchive: found the start of another archive, breaking\n"));
2505 break;
2506 }
2507 #endif
2508
2509 n = fread ( tmp, 1, 12, f );
2510 if (n != 12)
2511 barf("loadArchive: Failed reading mod time from `%s'", path);
2512 n = fread ( tmp, 1, 6, f );
2513 if (n != 6)
2514 barf("loadArchive: Failed reading owner from `%s'", path);
2515 n = fread ( tmp, 1, 6, f );
2516 if (n != 6)
2517 barf("loadArchive: Failed reading group from `%s'", path);
2518 n = fread ( tmp, 1, 8, f );
2519 if (n != 8)
2520 barf("loadArchive: Failed reading mode from `%s'", path);
2521 n = fread ( tmp, 1, 10, f );
2522 if (n != 10)
2523 barf("loadArchive: Failed reading size from `%s'", path);
2524 tmp[10] = '\0';
2525 for (n = 0; isdigit(tmp[n]); n++);
2526 tmp[n] = '\0';
2527 memberSize = atoi(tmp);
2528
2529 IF_DEBUG(linker, debugBelch("loadArchive: size of this archive member is %d\n", memberSize));
2530 n = fread ( tmp, 1, 2, f );
2531 if (n != 2)
2532 barf("loadArchive: Failed reading magic from `%s'", path);
2533 if (strncmp(tmp, "\x60\x0A", 2) != 0)
2534 barf("loadArchive: Failed reading magic from `%s' at %ld. Got %c%c",
2535 path, ftell(f), tmp[0], tmp[1]);
2536
2537 isGnuIndex = 0;
2538 /* Check for BSD-variant large filenames */
2539 if (0 == strncmp(fileName, "#1/", 3)) {
2540 fileName[16] = '\0';
2541 if (isdigit(fileName[3])) {
2542 for (n = 4; isdigit(fileName[n]); n++);
2543 fileName[n] = '\0';
2544 thisFileNameSize = atoi(fileName + 3);
2545 memberSize -= thisFileNameSize;
2546 if (thisFileNameSize >= fileNameSize) {
2547 /* Double it to avoid potentially continually
2548 increasing it by 1 */
2549 fileNameSize = thisFileNameSize * 2;
2550 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2551 }
2552 n = fread ( fileName, 1, thisFileNameSize, f );
2553 if (n != (int)thisFileNameSize) {
2554 barf("loadArchive: Failed reading filename from `%s'",
2555 path);
2556 }
2557 fileName[thisFileNameSize] = 0;
2558
2559 /* On OS X at least, thisFileNameSize is the size of the
2560 fileName field, not the length of the fileName
2561 itself. */
2562 thisFileNameSize = strlen(fileName);
2563 }
2564 else {
2565 barf("loadArchive: BSD-variant filename size not found while reading filename from `%s'", path);
2566 }
2567 }
2568 /* Check for GNU file index file */
2569 else if (0 == strncmp(fileName, "//", 2)) {
2570 fileName[0] = '\0';
2571 thisFileNameSize = 0;
2572 isGnuIndex = 1;
2573 }
2574 /* Check for a file in the GNU file index */
2575 else if (fileName[0] == '/') {
2576 if (isdigit(fileName[1])) {
2577 int i;
2578
2579 for (n = 2; isdigit(fileName[n]); n++);
2580 fileName[n] = '\0';
2581 n = atoi(fileName + 1);
2582
2583 if (gnuFileIndex == NULL) {
2584 barf("loadArchive: GNU-variant filename without an index while reading from `%s'", path);
2585 }
2586 if (n < 0 || n > gnuFileIndexSize) {
2587 barf("loadArchive: GNU-variant filename offset %d out of range [0..%d] while reading filename from `%s'", n, gnuFileIndexSize, path);
2588 }
2589 if (n != 0 && gnuFileIndex[n - 1] != '\n') {
2590 barf("loadArchive: GNU-variant filename offset %d invalid (range [0..%d]) while reading filename from `%s'", n, gnuFileIndexSize, path);
2591 }
2592 for (i = n; gnuFileIndex[i] != '\n'; i++);
2593 thisFileNameSize = i - n - 1;
2594 if (thisFileNameSize >= fileNameSize) {
2595 /* Double it to avoid potentially continually
2596 increasing it by 1 */
2597 fileNameSize = thisFileNameSize * 2;
2598 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2599 }
2600 memcpy(fileName, gnuFileIndex + n, thisFileNameSize);
2601 fileName[thisFileNameSize] = '\0';
2602 }
2603 else if (fileName[1] == ' ') {
2604 fileName[0] = '\0';
2605 thisFileNameSize = 0;
2606 }
2607 else {
2608 barf("loadArchive: GNU-variant filename offset not found while reading filename from `%s'", path);
2609 }
2610 }
2611 /* Finally, the case where the filename field actually contains
2612 the filename */
2613 else {
2614 /* GNU ar terminates filenames with a '/', this allowing
2615 spaces in filenames. So first look to see if there is a
2616 terminating '/'. */
2617 for (thisFileNameSize = 0;
2618 thisFileNameSize < 16;
2619 thisFileNameSize++) {
2620 if (fileName[thisFileNameSize] == '/') {
2621 fileName[thisFileNameSize] = '\0';
2622 break;
2623 }
2624 }
2625 /* If we didn't find a '/', then a space teminates the
2626 filename. Note that if we don't find one, then
2627 thisFileNameSize ends up as 16, and we already have the
2628 '\0' at the end. */
2629 if (thisFileNameSize == 16) {
2630 for (thisFileNameSize = 0;
2631 thisFileNameSize < 16;
2632 thisFileNameSize++) {
2633 if (fileName[thisFileNameSize] == ' ') {
2634 fileName[thisFileNameSize] = '\0';
2635 break;
2636 }
2637 }
2638 }
2639 }
2640
2641 IF_DEBUG(linker,
2642 debugBelch("loadArchive: Found member file `%s'\n", fileName));
2643
2644 isObject = thisFileNameSize >= 2
2645 && fileName[thisFileNameSize - 2] == '.'
2646 && fileName[thisFileNameSize - 1] == 'o';
2647
2648 IF_DEBUG(linker, debugBelch("loadArchive: \tthisFileNameSize = %d\n", (int)thisFileNameSize));
2649 IF_DEBUG(linker, debugBelch("loadArchive: \tisObject = %d\n", isObject));
2650
2651 if (isObject) {
2652 char *archiveMemberName;
2653
2654 IF_DEBUG(linker, debugBelch("loadArchive: Member is an object file...loading...\n"));
2655
2656 /* We can't mmap from the archive directly, as object
2657 files need to be 8-byte aligned but files in .ar
2658 archives are 2-byte aligned. When possible we use mmap
2659 to get some anonymous memory, as on 64-bit platforms if
2660 we use malloc then we can be given memory above 2^32.
2661 In the mmap case we're probably wasting lots of space;
2662 we could do better. */
2663 #if defined(USE_MMAP)
2664 image = mmapForLinker(memberSize, MAP_ANONYMOUS, -1);
2665 #elif defined(mingw32_HOST_OS)
2666 // TODO: We would like to use allocateExec here, but allocateExec
2667 // cannot currently allocate blocks large enough.
2668 image = allocateImageAndTrampolines(
2669 #if defined(x86_64_HOST_ARCH)
2670 f, path, fileName,
2671 #endif
2672 memberSize);
2673 #elif defined(darwin_HOST_OS)
2674 /* See loadObj() */
2675 misalignment = machoGetMisalignment(f);
2676 image = stgMallocBytes(memberSize + misalignment, "loadArchive(image)");
2677 image += misalignment;
2678 #else
2679 image = stgMallocBytes(memberSize, "loadArchive(image)");
2680 #endif
2681
2682 #if !defined(mingw32_HOST_OS)
2683 /*
2684 * Note [thin archives on Windows]
2685 * This doesn't compile on Windows because it assumes
2686 * char* pathnames, and we use wchar_t* on Windows. It's
2687 * not trivial to fix, so I'm leaving it disabled on
2688 * Windows for now --SDM
2689 */
2690 if (isThin) {
2691 FILE *member;
2692 char *pathCopy, *dirName, *memberPath;
2693
2694 /* Allocate and setup the dirname of the archive. We'll need
2695 this to locate the thin member */
2696 pathCopy = stgMallocBytes(strlen(path) + 1, "loadArchive(file)");
2697 strcpy(pathCopy, path);
2698 dirName = dirname(pathCopy);
2699
2700 /* Append the relative member name to the dirname. This should be
2701 be the full path to the actual thin member. */
2702 memberPath = stgMallocBytes(
2703 strlen(path) + 1 + strlen(fileName) + 1, "loadArchive(file)");
2704 strcpy(memberPath, dirName);
2705 memberPath[strlen(dirName)] = '/';
2706 strcpy(memberPath + strlen(dirName) + 1, fileName);
2707
2708 member = pathopen(memberPath, WSTR("rb"));
2709 if (!member)
2710 barf("loadObj: can't read `%s'", path);
2711
2712 n = fread ( image, 1, memberSize, member );
2713 if (n != memberSize) {
2714 barf("loadArchive: error whilst reading `%s'", fileName);
2715 }
2716
2717 fclose(member);
2718 stgFree(memberPath);
2719 stgFree(pathCopy);
2720 }
2721 else
2722 #endif
2723 {
2724 n = fread ( image, 1, memberSize, f );
2725 if (n != memberSize) {
2726 barf("loadArchive: error whilst reading `%s'", path);
2727 }
2728 }
2729
2730 archiveMemberName = stgMallocBytes(pathlen(path) + thisFileNameSize + 3,
2731 "loadArchive(file)");
2732 sprintf(archiveMemberName, "%" PATH_FMT "(%.*s)",
2733 path, (int)thisFileNameSize, fileName);
2734
2735 oc = mkOc(path, image, memberSize, archiveMemberName
2736 #ifndef USE_MMAP
2737 #ifdef darwin_HOST_OS
2738 , misalignment
2739 #endif
2740 #endif
2741 );
2742
2743 stgFree(archiveMemberName);
2744
2745 if (0 == loadOc(oc)) {
2746 stgFree(fileName);
2747 fclose(f);
2748 return 0;
2749 }
2750 }
2751 else if (isGnuIndex) {
2752 if (gnuFileIndex != NULL) {
2753 barf("loadArchive: GNU-variant index found, but already have an index, while reading filename from `%s'", path);
2754 }
2755 IF_DEBUG(linker, debugBelch("loadArchive: Found GNU-variant file index\n"));
2756 #ifdef USE_MMAP
2757 gnuFileIndex = mmapForLinker(memberSize + 1, MAP_ANONYMOUS, -1);
2758 #else
2759 gnuFileIndex = stgMallocBytes(memberSize + 1, "loadArchive(image)");
2760 #endif
2761 n = fread ( gnuFileIndex, 1, memberSize, f );
2762 if (n != memberSize) {
2763 barf("loadArchive: error whilst reading `%s'", path);
2764 }
2765 gnuFileIndex[memberSize] = '/';
2766 gnuFileIndexSize = memberSize;
2767 }
2768 else {
2769 IF_DEBUG(linker, debugBelch("loadArchive: '%s' does not appear to be an object file\n", fileName));
2770 if (!isThin || thisFileNameSize == 0) {
2771 n = fseek(f, memberSize, SEEK_CUR);
2772 if (n != 0)
2773 barf("loadArchive: error whilst seeking by %d in `%s'",
2774 memberSize, path);
2775 }
2776 }
2777
2778 /* .ar files are 2-byte aligned */
2779 if (!(isThin && thisFileNameSize > 0) && memberSize % 2) {
2780 IF_DEBUG(linker, debugBelch("loadArchive: trying to read one pad byte\n"));
2781 n = fread ( tmp, 1, 1, f );
2782 if (n != 1) {
2783 if (feof(f)) {
2784 IF_DEBUG(linker, debugBelch("loadArchive: found EOF while reading one pad byte\n"));
2785 break;
2786 }
2787 else {
2788 barf("loadArchive: Failed reading padding from `%s'", path);
2789 }
2790 }
2791 IF_DEBUG(linker, debugBelch("loadArchive: successfully read one pad byte\n"));
2792 }
2793 IF_DEBUG(linker, debugBelch("loadArchive: reached end of archive loading while loop\n"));
2794 }
2795
2796 fclose(f);
2797
2798 stgFree(fileName);
2799 if (gnuFileIndex != NULL) {
2800 #ifdef USE_MMAP
2801 munmap(gnuFileIndex, gnuFileIndexSize + 1);
2802 #else
2803 stgFree(gnuFileIndex);
2804 #endif
2805 }
2806
2807 IF_DEBUG(linker, debugBelch("loadArchive: done\n"));
2808 return 1;
2809 }
2810
2811 /* -----------------------------------------------------------------------------
2812 * Load an obj (populate the global symbol table, but don't resolve yet)
2813 *
2814 * Returns: 1 if ok, 0 on error.
2815 */
2816 HsInt
2817 loadObj( pathchar *path )
2818 {
2819 ObjectCode* oc;
2820 char *image;
2821 int fileSize;
2822 struct_stat st;
2823 int r;
2824 #ifdef USE_MMAP
2825 int fd;
2826 #else
2827 FILE *f;
2828 # if defined(darwin_HOST_OS)
2829 int misalignment;
2830 # endif
2831 #endif
2832 IF_DEBUG(linker, debugBelch("loadObj %" PATH_FMT "\n", path));
2833
2834 initLinker();
2835
2836 /* debugBelch("loadObj %s\n", path ); */
2837
2838 /* Check that we haven't already loaded this object.
2839 Ignore requests to load multiple times */
2840
2841 if (isAlreadyLoaded(path)) {
2842 IF_DEBUG(linker,
2843 debugBelch("ignoring repeated load of %" PATH_FMT "\n", path));
2844 return 1; /* success */
2845 }
2846
2847 r = pathstat(path, &st);
2848 if (r == -1) {
2849 IF_DEBUG(linker, debugBelch("File doesn't exist\n"));
2850 return 0;
2851 }
2852
2853 fileSize = st.st_size;
2854
2855 #ifdef USE_MMAP
2856 /* On many architectures malloc'd memory isn't executable, so we need to use mmap. */
2857
2858 #if defined(openbsd_HOST_OS)
2859 /* coverity[toctou] */
2860 fd = open(path, O_RDONLY, S_IRUSR);
2861 #else
2862 /* coverity[toctou] */
2863 fd = open(path, O_RDONLY);
2864 #endif
2865 if (fd == -1)
2866 barf("loadObj: can't open `%s'", path);
2867
2868 image = mmapForLinker(fileSize, 0, fd);
2869
2870 close(fd);
2871
2872 #else /* !USE_MMAP */
2873 /* load the image into memory */
2874 /* coverity[toctou] */
2875 f = pathopen(path, WSTR("rb"));
2876 if (!f)
2877 barf("loadObj: can't read `%" PATH_FMT "'", path);
2878
2879 # if defined(mingw32_HOST_OS)
2880 // TODO: We would like to use allocateExec here, but allocateExec
2881 // cannot currently allocate blocks large enough.
2882 image = allocateImageAndTrampolines(
2883 #if defined(x86_64_HOST_ARCH)
2884 f, path, "itself",
2885 #endif
2886 fileSize);
2887 # elif defined(darwin_HOST_OS)
2888 // In a Mach-O .o file, all sections can and will be misaligned
2889 // if the total size of the headers is not a multiple of the
2890 // desired alignment. This is fine for .o files that only serve
2891 // as input for the static linker, but it's not fine for us,
2892 // as SSE (used by gcc for floating point) and Altivec require
2893 // 16-byte alignment.
2894 // We calculate the correct alignment from the header before
2895 // reading the file, and then we misalign image on purpose so
2896 // that the actual sections end up aligned again.
2897 misalignment = machoGetMisalignment(f);
2898 image = stgMallocBytes(fileSize + misalignment, "loadObj(image)");
2899 image += misalignment;
2900 # else
2901 image = stgMallocBytes(fileSize, "loadObj(image)");
2902 # endif
2903
2904 {
2905 int n;
2906 n = fread ( image, 1, fileSize, f );
2907 if (n != fileSize)
2908 barf("loadObj: error whilst reading `%s'", path);
2909 }
2910 fclose(f);
2911 #endif /* USE_MMAP */
2912
2913 oc = mkOc(path, image, fileSize, NULL
2914 #ifndef USE_MMAP
2915 #ifdef darwin_HOST_OS
2916 , misalignment
2917 #endif
2918 #endif
2919 );
2920
2921 return loadOc(oc);
2922 }
2923
2924 static HsInt
2925 loadOc( ObjectCode* oc ) {
2926 int r;
2927
2928 IF_DEBUG(linker, debugBelch("loadOc: start\n"));
2929
2930 # if defined(OBJFORMAT_MACHO) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH))
2931 r = ocAllocateSymbolExtras_MachO ( oc );
2932 if (!r) {
2933 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_MachO failed\n"));
2934 return r;
2935 }
2936 # elif defined(OBJFORMAT_ELF) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH))
2937 r = ocAllocateSymbolExtras_ELF ( oc );
2938 if (!r) {
2939 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_ELF failed\n"));
2940 return r;
2941 }
2942 # elif defined(OBJFORMAT_PEi386) && defined(x86_64_HOST_ARCH)
2943 ocAllocateSymbolExtras_PEi386 ( oc );
2944 #endif
2945
2946 /* verify the in-memory image */
2947 # if defined(OBJFORMAT_ELF)
2948 r = ocVerifyImage_ELF ( oc );
2949 # elif defined(OBJFORMAT_PEi386)
2950 r = ocVerifyImage_PEi386 ( oc );
2951 # elif defined(OBJFORMAT_MACHO)
2952 r = ocVerifyImage_MachO ( oc );
2953 # else
2954 barf("loadObj: no verify method");
2955 # endif
2956 if (!r) {
2957 IF_DEBUG(linker, debugBelch("loadOc: ocVerifyImage_* failed\n"));
2958 return r;
2959 }
2960
2961 /* build the symbol list for this image */
2962 # if defined(OBJFORMAT_ELF)
2963 r = ocGetNames_ELF ( oc );
2964 # elif defined(OBJFORMAT_PEi386)
2965 r = ocGetNames_PEi386 ( oc );
2966 # elif defined(OBJFORMAT_MACHO)
2967 r = ocGetNames_MachO ( oc );
2968 # else
2969 barf("loadObj: no getNames method");
2970 # endif
2971 if (!r) {
2972 IF_DEBUG(linker, debugBelch("loadOc: ocGetNames_* failed\n"));
2973 return r;
2974 }
2975
2976 /* loaded, but not resolved yet */
2977 oc->status = OBJECT_LOADED;
2978 IF_DEBUG(linker, debugBelch("loadOc: done.\n"));
2979
2980 return 1;
2981 }
2982
2983 /* -----------------------------------------------------------------------------
2984 * resolve all the currently unlinked objects in memory
2985 *
2986 * Returns: 1 if ok, 0 on error.
2987 */
2988 HsInt
2989 resolveObjs( void )
2990 {
2991 ObjectCode *oc;
2992 int r;
2993
2994 IF_DEBUG(linker, debugBelch("resolveObjs: start\n"));
2995 initLinker();
2996
2997 for (oc = objects; oc; oc = oc->next) {
2998 if (oc->status != OBJECT_RESOLVED) {
2999 # if defined(OBJFORMAT_ELF)
3000 r = ocResolve_ELF ( oc );
3001 # elif defined(OBJFORMAT_PEi386)
3002 r = ocResolve_PEi386 ( oc );
3003 # elif defined(OBJFORMAT_MACHO)
3004 r = ocResolve_MachO ( oc );
3005 # else
3006 barf("resolveObjs: not implemented on this platform");
3007 # endif
3008 if (!r) { return r; }
3009
3010 // run init/init_array/ctors/mod_init_func
3011
3012 loading_obj = oc; // tells foreignExportStablePtr what to do
3013 #if defined(OBJFORMAT_ELF)
3014 r = ocRunInit_ELF ( oc );
3015 #elif defined(OBJFORMAT_PEi386)
3016 r = ocRunInit_PEi386 ( oc );
3017 #elif defined(OBJFORMAT_MACHO)
3018 r = ocRunInit_MachO ( oc );
3019 #else
3020 barf("resolveObjs: initializers not implemented on this platform");
3021 #endif
3022 loading_obj = NULL;
3023
3024 if (!r) { return r; }
3025
3026 oc->status = OBJECT_RESOLVED;
3027 }
3028 }
3029 IF_DEBUG(linker, debugBelch("resolveObjs: done\n"));
3030 return 1;
3031 }
3032
3033 /* -----------------------------------------------------------------------------
3034 * delete an object from the pool
3035 */
3036 HsInt
3037 unloadObj( pathchar *path )
3038 {
3039 ObjectCode *oc, *prev, *next;
3040 HsBool unloadedAnyObj = HS_BOOL_FALSE;
3041
3042 ASSERT(symhash != NULL);
3043 ASSERT(objects != NULL);
3044
3045 initLinker();
3046
3047 IF_DEBUG(linker, debugBelch("unloadObj: %" PATH_FMT "\n", path));
3048
3049 prev = NULL;
3050 for (oc = objects; oc; oc = next) {
3051 next = oc->next; // oc might be freed
3052
3053 if (!pathcmp(oc->fileName,path)) {
3054
3055 /* Remove all the mappings for the symbols within this
3056 * object..
3057 */
3058 {
3059 int i;
3060 for (i = 0; i < oc->n_symbols; i++) {
3061 if (oc->symbols[i] != NULL) {
3062 ghciRemoveSymbolTable(symhash, oc->symbols[i], oc);
3063 }
3064 }
3065 }
3066
3067 if (prev == NULL) {
3068 objects = oc->next;
3069 } else {
3070 prev->next = oc->next;
3071 }
3072 oc->next = unloaded_objects;
3073 unloaded_objects = oc;
3074
3075 // The data itself and a few other bits (oc->fileName,
3076 // oc->archiveMemberName) are kept until freeObjectCode(),
3077 // which is only called when it has been determined that
3078 // it is safe to unload the object.
3079 stgFree(oc->symbols);
3080
3081 {
3082 Section *s, *nexts;
3083
3084 for (s = oc->sections; s != NULL; s = nexts) {
3085 nexts = s->next;
3086 stgFree(s);
3087 }
3088 }
3089
3090 freeProddableBlocks(oc);
3091
3092 // Release any StablePtrs that were created when this
3093 // object module was initialized.
3094 {
3095 ForeignExportStablePtr *fe_ptr, *next;
3096
3097 for (fe_ptr = oc->stable_ptrs; fe_ptr != NULL; fe_ptr = next) {
3098 next = fe_ptr->next;
3099 freeStablePtr(fe_ptr->stable_ptr);
3100 stgFree(fe_ptr);
3101 }
3102 }
3103
3104 oc->status = OBJECT_UNLOADED;
3105
3106 /* This could be a member of an archive so continue
3107 * unloading other members. */
3108 unloadedAnyObj = HS_BOOL_TRUE;
3109 } else {
3110 prev = oc;
3111 }
3112 }
3113
3114 if (unloadedAnyObj) {
3115 return 1;
3116 }
3117 else {
3118 errorBelch("unloadObj: can't find `%" PATH_FMT "' to unload", path);
3119 return 0;
3120 }
3121 }
3122
3123 /* -----------------------------------------------------------------------------
3124 * Sanity checking. For each ObjectCode, maintain a list of address ranges
3125 * which may be prodded during relocation, and abort if we try and write
3126 * outside any of these.
3127 */
3128 static void
3129 addProddableBlock ( ObjectCode* oc, void* start, int size )
3130 {
3131 ProddableBlock* pb
3132 = stgMallocBytes(sizeof(ProddableBlock), "addProddableBlock");
3133
3134 IF_DEBUG(linker, debugBelch("addProddableBlock: %p %p %d\n", oc, start, size));
3135 ASSERT(size > 0);
3136 pb->start = start;
3137 pb->size = size;
3138 pb->next = oc->proddables;
3139 oc->proddables = pb;
3140 }
3141
3142 static void
3143 checkProddableBlock (ObjectCode *oc, void *addr, size_t size )
3144 {
3145 ProddableBlock* pb;
3146
3147 for (pb = oc->proddables; pb != NULL; pb = pb->next) {
3148 char* s = (char*)(pb->start);
3149 char* e = s + pb->size;
3150 char* a = (char*)addr;
3151 if (a >= s && (a+size) <= e) return;
3152 }
3153 barf("checkProddableBlock: invalid fixup in runtime linker: %p", addr);
3154 }
3155
3156 static void freeProddableBlocks (ObjectCode *oc)
3157 {
3158 ProddableBlock *pb, *next;
3159
3160 for (pb = oc->proddables; pb != NULL; pb = next) {
3161 next = pb->next;
3162 stgFree(pb);
3163 }
3164 oc->proddables = NULL;
3165 }
3166
3167 /* -----------------------------------------------------------------------------
3168 * Section management.
3169 */
3170 static void
3171 addSection ( ObjectCode* oc, SectionKind kind,
3172 void* start, void* end )
3173 {
3174 Section* s = stgMallocBytes(sizeof(Section), "addSection");
3175 s->start = start;
3176 s->end = end;
3177 s->kind = kind;
3178 s->next = oc->sections;
3179 oc->sections = s;
3180
3181 IF_DEBUG(linker, debugBelch("addSection: %p-%p (size %lld), kind %d\n",
3182 start, ((char*)end)-1, ((long long)(size_t)end) - ((long long)(size_t)start) + 1, kind ));
3183 }
3184
3185
3186 /* --------------------------------------------------------------------------
3187 * Symbol Extras.
3188 * This is about allocating a small chunk of memory for every symbol in the
3189 * object file. We make sure that the SymboLExtras are always "in range" of
3190 * limited-range PC-relative instructions on various platforms by allocating
3191 * them right next to the object code itself.
3192 */
3193
3194 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3195 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3196
3197 /*
3198 ocAllocateSymbolExtras
3199
3200 Allocate additional space at the end of the object file image to make room
3201 for jump islands (powerpc, x86_64, arm) and GOT entries (x86_64).
3202
3203 PowerPC relative branch instructions have a 24 bit displacement field.
3204 As PPC code is always 4-byte-aligned, this yields a +-32MB range.
3205 If a particular imported symbol is outside this range, we have to redirect
3206 the jump to a short piece of new code that just loads the 32bit absolute
3207 address and jumps there.
3208 On x86_64, PC-relative jumps and PC-relative accesses to the GOT are limited
3209 to 32 bits (+-2GB).
3210
3211 This function just allocates space for one SymbolExtra for every
3212 undefined symbol in the object file. The code for the jump islands is
3213 filled in by makeSymbolExtra below.
3214 */
3215
3216 static int ocAllocateSymbolExtras( ObjectCode* oc, int count, int first )
3217 {
3218 #ifdef USE_MMAP
3219 int pagesize, n, m;
3220 #endif
3221 int aligned;
3222 #ifndef USE_MMAP
3223 int misalignment = 0;
3224 #ifdef darwin_HOST_OS
3225 misalignment = oc->misalignment;
3226 #endif
3227 #endif
3228
3229 if( count > 0 )
3230 {
3231 // round up to the nearest 4
3232 aligned = (oc->fileSize + 3) & ~3;
3233
3234 #ifdef USE_MMAP
3235 pagesize = getpagesize();
3236 n = ROUND_UP( oc->fileSize, pagesize );
3237 m = ROUND_UP( aligned + sizeof (SymbolExtra) * count, pagesize );
3238
3239 /* we try to use spare space at the end of the last page of the
3240 * image for the jump islands, but if there isn't enough space
3241 * then we have to map some (anonymously, remembering MAP_32BIT).
3242 */
3243 if( m > n ) // we need to allocate more pages
3244 {
3245 if (USE_CONTIGUOUS_MMAP)
3246 {
3247 /* Keep image and symbol_extras contiguous */
3248 void *new = mmapForLinker(n + (sizeof(SymbolExtra) * count),
3249 MAP_ANONYMOUS, -1);
3250 if (new)
3251 {
3252 memcpy(new, oc->image, oc->fileSize);
3253 munmap(oc->image, n);
3254 oc->image = new;
3255 oc->fileSize = n + (sizeof(SymbolExtra) * count);
3256 oc->symbol_extras = (SymbolExtra *) (oc->image + n);
3257 }
3258 else
3259 oc->symbol_extras = NULL;
3260 }
3261 else
3262 {
3263 oc->symbol_extras = mmapForLinker(sizeof(SymbolExtra) * count,
3264 MAP_ANONYMOUS, -1);
3265 }
3266 }
3267 else
3268 {
3269 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3270 }
3271 #else
3272 oc->image -= misalignment;
3273 oc->image = stgReallocBytes( oc->image,
3274 misalignment +
3275 aligned + sizeof (SymbolExtra) * count,
3276 "ocAllocateSymbolExtras" );
3277 oc->image += misalignment;
3278
3279 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3280 #endif /* USE_MMAP */
3281
3282 memset( oc->symbol_extras, 0, sizeof (SymbolExtra) * count );
3283 }
3284 else
3285 oc->symbol_extras = NULL;
3286
3287 oc->first_symbol_extra = first;
3288 oc->n_symbol_extras = count;
3289
3290 return 1;
3291 }
3292
3293 #endif
3294 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3295
3296 #if defined(arm_HOST_ARCH)
3297
3298 static void
3299 ocFlushInstructionCache( ObjectCode *oc )
3300 {
3301 // Object code
3302 __clear_cache(oc->image, oc->image + oc->fileSize);
3303 // Jump islands
3304 __clear_cache(oc->symbol_extras, &oc->symbol_extras[oc->n_symbol_extras]);
3305 }
3306
3307 #endif
3308
3309 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3310 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3311
3312 static SymbolExtra* makeSymbolExtra( ObjectCode* oc,
3313 unsigned long symbolNumber,
3314 unsigned long target )
3315 {
3316 SymbolExtra *extra;
3317
3318 ASSERT( symbolNumber >= oc->first_symbol_extra
3319 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3320
3321 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3322
3323 #ifdef powerpc_HOST_ARCH
3324 // lis r12, hi16(target)
3325 extra->jumpIsland.lis_r12 = 0x3d80;
3326 extra->jumpIsland.hi_addr = target >> 16;
3327
3328 // ori r12, r12, lo16(target)
3329 extra->jumpIsland.ori_r12_r12 = 0x618c;
3330 extra->jumpIsland.lo_addr = target & 0xffff;
3331
3332 // mtctr r12
3333 extra->jumpIsland.mtctr_r12 = 0x7d8903a6;
3334
3335 // bctr
3336 extra->jumpIsland.bctr = 0x4e800420;
3337 #endif
3338 #ifdef x86_64_HOST_ARCH
3339 // jmp *-14(%rip)
3340 static uint8_t jmp[] = { 0xFF, 0x25, 0xF2, 0xFF, 0xFF, 0xFF };
3341 extra->addr = target;
3342 memcpy(extra->jumpIsland, jmp, 6);
3343 #endif
3344
3345 return extra;
3346 }
3347
3348 #endif
3349 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3350
3351 #ifdef arm_HOST_ARCH
3352 static SymbolExtra* makeArmSymbolExtra( ObjectCode* oc,
3353 unsigned long symbolNumber,
3354 unsigned long target,
3355 int fromThumb,
3356 int toThumb )
3357 {
3358 SymbolExtra *extra;
3359
3360 ASSERT( symbolNumber >= oc->first_symbol_extra
3361 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3362
3363 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3364
3365 // Make sure instruction mode bit is set properly
3366 if (toThumb)
3367 target |= 1;
3368 else
3369 target &= ~1;
3370
3371 if (!fromThumb) {
3372 // In ARM encoding:
3373 // movw r12, #0
3374 // movt r12, #0
3375 // bx r12
3376 uint32_t code[] = { 0xe300c000, 0xe340c000, 0xe12fff1c };
3377
3378 // Patch lower half-word into movw
3379 code[0] |= ((target>>12) & 0xf) << 16;
3380 code[0] |= target & 0xfff;
3381 // Patch upper half-word into movt
3382 target >>= 16;
3383 code[1] |= ((target>>12) & 0xf) << 16;
3384 code[1] |= target & 0xfff;
3385
3386 memcpy(extra->jumpIsland, code, 12);
3387
3388 } else {
3389 // In Thumb encoding:
3390 // movw r12, #0
3391 // movt r12, #0
3392 // bx r12
3393 uint16_t code[] = { 0xf240, 0x0c00,
3394 0xf2c0, 0x0c00,
3395 0x4760 };
3396
3397 // Patch lower half-word into movw
3398 code[0] |= (target>>12) & 0xf;
3399 code[0] |= ((target>>11) & 0x1) << 10;
3400 code[1] |= ((target>>8) & 0x7) << 12;
3401 code[1] |= target & 0xff;
3402 // Patch upper half-word into movt
3403 target >>= 16;
3404 code[2] |= (target>>12) & 0xf;
3405 code[2] |= ((target>>11) & 0x1) << 10;
3406 code[3] |= ((target>>8) & 0x7) << 12;
3407 code[3] |= target & 0xff;
3408
3409 memcpy(extra->jumpIsland, code, 10);
3410 }
3411
3412 return extra;
3413 }
3414 #endif // arm_HOST_ARCH
3415
3416 /* --------------------------------------------------------------------------
3417 * PowerPC specifics (instruction cache flushing)
3418 * ------------------------------------------------------------------------*/
3419
3420 #ifdef powerpc_HOST_ARCH
3421 /*
3422 ocFlushInstructionCache
3423
3424 Flush the data & instruction caches.
3425 Because the PPC has split data/instruction caches, we have to
3426 do that whenever we modify code at runtime.
3427 */
3428
3429 static void
3430 ocFlushInstructionCacheFrom(void* begin, size_t length)
3431 {
3432 size_t n = (length + 3) / 4;
3433 unsigned long* p = begin;
3434
3435 while (n--)
3436 {
3437 __asm__ volatile ( "dcbf 0,%0\n\t"
3438 "sync\n\t"
3439 "icbi 0,%0"
3440 :
3441 : "r" (p)
3442 );
3443 p++;
3444 }
3445 __asm__ volatile ( "sync\n\t"
3446 "isync"
3447 );
3448 }
3449
3450 static void
3451 ocFlushInstructionCache( ObjectCode *oc )
3452 {
3453 /* The main object code */
3454 ocFlushInstructionCacheFrom(oc->image
3455 #ifdef darwin_HOST_OS
3456 + oc->misalignment
3457 #endif
3458 , oc->fileSize);
3459
3460 /* Jump Islands */
3461 ocFlushInstructionCacheFrom(oc->symbol_extras, sizeof(SymbolExtra) * oc->n_symbol_extras);
3462 }
3463 #endif /* powerpc_HOST_ARCH */
3464
3465
3466 /* --------------------------------------------------------------------------
3467 * PEi386 specifics (Win32 targets)
3468 * ------------------------------------------------------------------------*/
3469
3470 /* The information for this linker comes from
3471 Microsoft Portable Executable
3472 and Common Object File Format Specification
3473 revision 5.1 January 1998
3474 which SimonM says comes from the MS Developer Network CDs.
3475
3476 It can be found there (on older CDs), but can also be found
3477 online at:
3478
3479 http://www.microsoft.com/hwdev/hardware/PECOFF.asp
3480
3481 (this is Rev 6.0 from February 1999).
3482
3483 Things move, so if that fails, try searching for it via
3484
3485 http://www.google.com/search?q=PE+COFF+specification
3486
3487 The ultimate reference for the PE format is the Winnt.h
3488 header file that comes with the Platform SDKs; as always,
3489 implementations will drift wrt their documentation.
3490
3491 A good background article on the PE format is Matt Pietrek's
3492 March 1994 article in Microsoft System Journal (MSJ)
3493 (Vol.9, No. 3): "Peering Inside the PE: A Tour of the
3494 Win32 Portable Executable File Format." The info in there
3495 has recently been updated in a two part article in
3496 MSDN magazine, issues Feb and March 2002,
3497 "Inside Windows: An In-Depth Look into the Win32 Portable
3498 Executable File Format"
3499
3500 John Levine's book "Linkers and Loaders" contains useful
3501 info on PE too.
3502 */
3503
3504
3505 #if defined(OBJFORMAT_PEi386)
3506
3507
3508
3509 typedef unsigned char UChar;
3510 typedef unsigned short UInt16;
3511 typedef unsigned int UInt32;
3512 typedef int Int32;
3513 typedef unsigned long long int UInt64;
3514
3515
3516 typedef
3517 struct {
3518 UInt16 Machine;
3519 UInt16 NumberOfSections;
3520 UInt32 TimeDateStamp;
3521 UInt32 PointerToSymbolTable;
3522 UInt32 NumberOfSymbols;
3523 UInt16 SizeOfOptionalHeader;
3524 UInt16 Characteristics;
3525 }
3526 COFF_header;
3527
3528 #define sizeof_COFF_header 20
3529
3530
3531 typedef
3532 struct {
3533 UChar Name[8];
3534 UInt32 VirtualSize;
3535 UInt32 VirtualAddress;
3536 UInt32 SizeOfRawData;
3537 UInt32 PointerToRawData;
3538 UInt32 PointerToRelocations;
3539 UInt32 PointerToLinenumbers;
3540 UInt16 NumberOfRelocations;
3541 UInt16 NumberOfLineNumbers;
3542 UInt32 Characteristics;
3543 }
3544 COFF_section;
3545
3546 #define sizeof_COFF_section 40
3547
3548
3549 typedef
3550 struct {
3551 UChar Name[8];
3552 UInt32 Value;
3553 UInt16 SectionNumber;
3554 UInt16 Type;
3555 UChar StorageClass;
3556 UChar NumberOfAuxSymbols;
3557 }
3558 COFF_symbol;
3559
3560 #define sizeof_COFF_symbol 18
3561
3562
3563 typedef
3564 struct {
3565 UInt32 VirtualAddress;
3566 UInt32 SymbolTableIndex;
3567 UInt16 Type;
3568 }
3569 COFF_reloc;
3570
3571 #define sizeof_COFF_reloc 10
3572
3573
3574 /* From PE spec doc, section 3.3.2 */
3575 /* Note use of MYIMAGE_* since IMAGE_* are already defined in
3576 windows.h -- for the same purpose, but I want to know what I'm
3577 getting, here. */
3578 #define MYIMAGE_FILE_RELOCS_STRIPPED 0x0001
3579 #define MYIMAGE_FILE_EXECUTABLE_IMAGE 0x0002
3580 #define MYIMAGE_FILE_DLL 0x2000
3581 #define MYIMAGE_FILE_SYSTEM 0x1000
3582 #define MYIMAGE_FILE_BYTES_REVERSED_HI 0x8000
3583 #define MYIMAGE_FILE_BYTES_REVERSED_LO 0x0080
3584 #define MYIMAGE_FILE_32BIT_MACHINE 0x0100
3585
3586 /* From PE spec doc, section 5.4.2 and 5.4.4 */
3587 #define MYIMAGE_SYM_CLASS_EXTERNAL 2
3588 #define MYIMAGE_SYM_CLASS_STATIC 3
3589 #define MYIMAGE_SYM_UNDEFINED 0
3590
3591 /* From PE spec doc, section 4.1 */
3592 #define MYIMAGE_SCN_CNT_CODE 0x00000020
3593 #define MYIMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
3594 #define MYIMAGE_SCN_LNK_NRELOC_OVFL 0x01000000
3595
3596 /* From PE spec doc, section 5.2.1 */
3597 #define MYIMAGE_REL_I386_DIR32 0x0006
3598 #define MYIMAGE_REL_I386_REL32 0x0014
3599
3600 /* We assume file pointer is right at the
3601 beginning of COFF object.
3602 */
3603 static char *
3604 allocateImageAndTrampolines (
3605 #if defined(x86_64_HOST_ARCH)
3606 FILE* f, pathchar* arch_name, char* member_name,
3607 #endif
3608 int size )
3609 {
3610 char* image;
3611 #if defined(x86_64_HOST_ARCH)
3612 /* PeCoff contains number of symbols right in it's header, so
3613 we can reserve the room for symbolExtras right here. */
3614 COFF_header hdr;
3615 size_t n;
3616
3617 n = fread ( &hdr, 1, sizeof_COFF_header, f );
3618 if (n != sizeof( COFF_header ))
3619 barf("getNumberOfSymbols: error whilst reading `%s' header in `%S'",
3620 member_name, arch_name);
3621 fseek( f, -sizeof_COFF_header, SEEK_CUR );
3622
3623 /* We get back 8-byte aligned memory (is that guaranteed?), but
3624 the offsets to the sections within the file are all 4 mod 8
3625 (is that guaranteed?). We therefore need to offset the image
3626 by 4, so that all the pointers are 8-byte aligned, so that
3627 pointer tagging works. */
3628 /* For 32-bit case we don't need this, hence we use macro PEi386_IMAGE_OFFSET,
3629 which equals to 4 for 64-bit case and 0 for 32-bit case. */
3630 /* We allocate trampolines area for all symbols right behind
3631 image data, aligned on 8. */
3632 size = ((PEi386_IMAGE_OFFSET + size + 0x7) & ~0x7)
3633 + hdr.NumberOfSymbols * sizeof(SymbolExtra);
3634 #endif
3635 image = VirtualAlloc(NULL, size,
3636 MEM_RESERVE | MEM_COMMIT,
3637 PAGE_EXECUTE_READWRITE);
3638 return image + PEi386_IMAGE_OFFSET;
3639 }
3640
3641 /* We use myindex to calculate array addresses, rather than
3642 simply doing the normal subscript thing. That's because
3643 some of the above structs have sizes which are not
3644 a whole number of words. GCC rounds their sizes up to a
3645 whole number of words, which means that the address calcs
3646 arising from using normal C indexing or pointer arithmetic
3647 are just plain wrong. Sigh.
3648 */
3649 static UChar *
3650 myindex ( int scale, void* base, int index )
3651 {
3652 return
3653 ((UChar*)base) + scale * index;
3654 }
3655
3656
3657 static void
3658 printName ( UChar* name, UChar* strtab )
3659 {
3660 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3661 UInt32 strtab_offset = * (UInt32*)(name+4);
3662 debugBelch("%s", strtab + strtab_offset );
3663 } else {
3664 int i;
3665 for (i = 0; i < 8; i++) {
3666 if (name[i] == 0) break;
3667 debugBelch("%c", name[i] );
3668 }
3669 }
3670 }
3671
3672
3673 static void
3674 copyName ( UChar* name, UChar* strtab, UChar* dst, int dstSize )
3675 {
3676 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3677 UInt32 strtab_offset = * (UInt32*)(name+4);
3678 strncpy ( (char*)dst, (char*)strtab+strtab_offset, dstSize );
3679 dst[dstSize-1] = 0;
3680 } else {
3681 int i = 0;
3682 while (1) {
3683 if (i >= 8) break;
3684 if (name[i] == 0) break;
3685 dst[i] = name[i];
3686 i++;
3687 }
3688 dst[i] = 0;
3689 }
3690 }
3691
3692
3693 static UChar *
3694 cstring_from_COFF_symbol_name ( UChar* name, UChar* strtab )
3695 {
3696 UChar* newstr;
3697 /* If the string is longer than 8 bytes, look in the
3698 string table for it -- this will be correctly zero terminated.
3699 */
3700 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3701 UInt32 strtab_offset = * (UInt32*)(name+4);
3702 return ((UChar*)strtab) + strtab_offset;
3703 }
3704 /* Otherwise, if shorter than 8 bytes, return the original,
3705 which by defn is correctly terminated.
3706 */
3707 if (name[7]==0) return name;
3708 /* The annoying case: 8 bytes. Copy into a temporary
3709 (XXX which is never freed ...)
3710 */
3711 newstr = stgMallocBytes(9, "cstring_from_COFF_symbol_name");
3712 ASSERT(newstr);
3713 strncpy((char*)newstr,(char*)name,8);
3714 newstr[8] = 0;
3715 return newstr;
3716 }
3717
3718 /* Getting the name of a section is mildly tricky, so we make a
3719 function for it. Sadly, in one case we have to copy the string
3720 (when it is exactly 8 bytes long there's no trailing '\0'), so for
3721 consistency we *always* copy the string; the caller must free it
3722 */
3723 static char *
3724 cstring_from_section_name (UChar* name, UChar* strtab)
3725 {
3726 char *newstr;
3727
3728 if (name[0]=='/') {
3729 int strtab_offset = strtol((char*)name+1,NULL,10);
3730 int len = strlen(((char*)strtab) + strtab_offset);
3731
3732 newstr = stgMallocBytes(len+1, "cstring_from_section_symbol_name");
3733 strcpy((char*)newstr, (char*)((UChar*)strtab) + strtab_offset);
3734 return newstr;
3735 }
3736 else
3737 {
3738 newstr = stgMallocBytes(9, "cstring_from_section_symbol_name");
3739 ASSERT(newstr);
3740 strncpy((char*)newstr,(char*)name,8);
3741 newstr[8] = 0;
3742 return newstr;
3743 }
3744 }
3745
3746 /* Just compares the short names (first 8 chars) */
3747 static COFF_section *
3748 findPEi386SectionCalled ( ObjectCode* oc, UChar* name, UChar* strtab )
3749 {
3750 int i;
3751 rtsBool long_name = rtsFalse;
3752 COFF_header* hdr
3753 = (COFF_header*)(oc->image);
3754 COFF_section* sectab
3755 = (COFF_section*) (
3756 ((UChar*)(oc->image))
3757 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3758 );
3759 // String is longer than 8 bytes, swap in the proper
3760 // (NULL-terminated) version, and make a note that this
3761 // is a long name.
3762 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3763 UInt32 strtab_offset = * (UInt32*)(name+4);
3764 name = ((UChar*)strtab) + strtab_offset;
3765 long_name = rtsTrue;
3766 }
3767 for (i = 0; i < hdr->NumberOfSections; i++) {
3768 UChar* n1;
3769 UChar* n2;
3770 COFF_section* section_i
3771 = (COFF_section*)
3772 myindex ( sizeof_COFF_section, sectab, i );
3773 n1 = (UChar*) &(section_i->Name);
3774 n2 = name;
3775 // Long section names are prefixed with a slash, see
3776 // also cstring_from_section_name
3777 if (n1[0] == '/' && long_name) {
3778 // Long name check
3779 // We don't really want to make an assumption that the string
3780 // table indexes are the same, so we'll do a proper check.
3781 int n1_strtab_offset = strtol((char*)n1+1,NULL,10);
3782 n1 = (UChar*) (((char*)strtab) + n1_strtab_offset);
3783 if (0==strcmp((const char*)n1, (const char*)n2)) {
3784 return section_i;
3785 }
3786 } else if (n1[0] != '/' && !long_name) {
3787 // Short name check
3788 if (n1[0]==n2[0] && n1[1]==n2[1] && n1[2]==n2[2] &&
3789 n1[3]==n2[3] && n1[4]==n2[4] && n1[5]==n2[5] &&
3790 n1[6]==n2[6] && n1[7]==n2[7]) {
3791 return section_i;
3792 }
3793 } else {
3794 // guaranteed to mismatch, because we never attempt to link
3795 // in an executable where the section name may be truncated
3796 }
3797 }
3798
3799 return NULL;
3800 }
3801
3802 static void
3803 zapTrailingAtSign ( UChar* sym )
3804 {
3805 # define my_isdigit(c) ((c) >= '0' && (c) <= '9')
3806 int i, j;
3807 if (sym[0] == 0) return;
3808 i = 0;
3809 while (sym[i] != 0) i++;
3810 i--;
3811 j = i;
3812 while (j > 0 && my_isdigit(sym[j])) j--;
3813 if (j > 0 && sym[j] == '@' && j != i) sym[j] = 0;
3814 # undef my_isdigit
3815 }
3816
3817 static void *
3818 lookupSymbolInDLLs ( UChar *lbl )
3819 {
3820 OpenedDLL* o_dll;
3821 void *sym;
3822
3823 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
3824 /* debugBelch("look in %s for %s\n", o_dll->name, lbl); */
3825
3826 if (lbl[0] == '_') {
3827 /* HACK: if the name has an initial underscore, try stripping
3828 it off & look that up first. I've yet to verify whether there's
3829 a Rule that governs whether an initial '_' *should always* be
3830 stripped off when mapping from import lib name to the DLL name.
3831 */
3832 sym = GetProcAddress(o_dll->instance, (char*)(lbl+1));
3833 if (sym != NULL) {
3834 /*debugBelch("found %s in %s\n", lbl+1,o_dll->name);*/
3835 return sym;
3836 }
3837 }
3838
3839 /* Ticket #2283.
3840 Long description: http://support.microsoft.com/kb/132044
3841 tl;dr:
3842 If C/C++ compiler sees __declspec(dllimport) ... foo ...
3843 it generates call *__imp_foo, and __imp_foo here has exactly
3844 the same semantics as in __imp_foo = GetProcAddress(..., "foo")
3845 */
3846 if (sym == NULL && strncmp ((const char*)lbl, "__imp_", 6) == 0) {
3847 sym = GetProcAddress(o_dll->instance, (char*)(lbl+6));
3848 if (sym != NULL) {
3849 IndirectAddr* ret;
3850 ret = stgMallocBytes( sizeof(IndirectAddr), "lookupSymbolInDLLs" );
3851 ret->addr = sym;
3852 ret->next = indirects;
3853 indirects = ret;
3854 errorBelch("warning: %s from %S is linked instead of %s",
3855 (char*)(lbl+6), o_dll->name, (char*)lbl);
3856 return (void*) & ret->addr;
3857 }
3858 }
3859
3860 sym = GetProcAddress(o_dll->instance, (char*)lbl);
3861 if (sym != NULL) {
3862 /*debugBelch("found %s in %s\n", lbl,o_dll->name);*/
3863 return sym;
3864 }
3865 }
3866 return NULL;
3867 }
3868
3869
3870 static int
3871 ocVerifyImage_PEi386 ( ObjectCode* oc )
3872 {
3873 int i;
3874 UInt32 j, noRelocs;
3875 COFF_header* hdr;
3876 COFF_section* sectab;
3877 COFF_symbol* symtab;
3878 UChar* strtab;
3879 /* debugBelch("\nLOADING %s\n", oc->fileName); */
3880 hdr = (COFF_header*)(oc->image);
3881 sectab = (COFF_section*) (
3882 ((UChar*)(oc->image))
3883 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3884 );
3885 symtab = (COFF_symbol*) (
3886 ((UChar*)(oc->image))
3887 + hdr->PointerToSymbolTable
3888 );
3889 strtab = ((UChar*)symtab)
3890 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3891
3892 #if defined(i386_HOST_ARCH)
3893 if (hdr->Machine != 0x14c) {
3894 errorBelch("%" PATH_FMT ": Not x86 PEi386", oc->fileName);
3895 return 0;
3896 }
3897 #elif defined(x86_64_HOST_ARCH)
3898 if (hdr->Machine != 0x8664) {
3899 errorBelch("%" PATH_FMT ": Not x86_64 PEi386", oc->fileName);
3900 return 0;
3901 }
3902 #else
3903 errorBelch("PEi386 not supported on this arch");
3904 #endif
3905
3906 if (hdr->SizeOfOptionalHeader != 0) {
3907 errorBelch("%" PATH_FMT ": PEi386 with nonempty optional header", oc->fileName);
3908 return 0;
3909 }
3910 if ( /* (hdr->Characteristics & MYIMAGE_FILE_RELOCS_STRIPPED) || */
3911 (hdr->Characteristics & MYIMAGE_FILE_EXECUTABLE_IMAGE) ||
3912 (hdr->Characteristics & MYIMAGE_FILE_DLL) ||
3913 (hdr->Characteristics & MYIMAGE_FILE_SYSTEM) ) {
3914 errorBelch("%" PATH_FMT ": Not a PEi386 object file", oc->fileName);
3915 return 0;
3916 }
3917 if ( (hdr->Characteristics & MYIMAGE_FILE_BYTES_REVERSED_HI)
3918 /* || !(hdr->Characteristics & MYIMAGE_FILE_32BIT_MACHINE) */ ) {
3919 errorBelch("%" PATH_FMT ": Invalid PEi386 word size or endiannness: %d",
3920 oc->fileName,
3921 (int)(hdr->Characteristics));
3922 return 0;
3923 }
3924 /* If the string table size is way crazy, this might indicate that
3925 there are more than 64k relocations, despite claims to the
3926 contrary. Hence this test. */
3927 /* debugBelch("strtab size %d\n", * (UInt32*)strtab); */
3928 #if 0
3929 if ( (*(UInt32*)strtab) > 600000 ) {
3930 /* Note that 600k has no special significance other than being
3931 big enough to handle the almost-2MB-sized lumps that
3932 constitute HSwin32*.o. */
3933 debugBelch("PEi386 object has suspiciously large string table; > 64k relocs?");
3934 return 0;
3935 }
3936 #endif
3937
3938 /* No further verification after this point; only debug printing. */
3939 i = 0;
3940 IF_DEBUG(linker, i=1);
3941 if (i == 0) return 1;
3942
3943 debugBelch( "sectab offset = %" FMT_Int "\n", ((UChar*)sectab) - ((UChar*)hdr) );
3944 debugBelch( "symtab offset = %" FMT_Int "\n", ((UChar*)symtab) - ((UChar*)hdr) );
3945 debugBelch( "strtab offset = %" FMT_Int "\n", ((UChar*)strtab) - ((UChar*)hdr) );
3946
3947 debugBelch("\n" );
3948 debugBelch( "Machine: 0x%x\n", (UInt32)(hdr->Machine) );
3949 debugBelch( "# sections: %d\n", (UInt32)(hdr->NumberOfSections) );
3950 debugBelch( "time/date: 0x%x\n", (UInt32)(hdr->TimeDateStamp) );
3951 debugBelch( "symtab offset: %d\n", (UInt32)(hdr->PointerToSymbolTable) );
3952 debugBelch( "# symbols: %d\n", (UInt32)(hdr->NumberOfSymbols) );
3953 debugBelch( "sz of opt hdr: %d\n", (UInt32)(hdr->SizeOfOptionalHeader) );
3954 debugBelch( "characteristics: 0x%x\n", (UInt32)(hdr->Characteristics) );
3955
3956 /* Print the section table. */
3957 debugBelch("\n" );
3958 for (i = 0; i < hdr->NumberOfSections; i++) {
3959 COFF_reloc* reltab;
3960 COFF_section* sectab_i
3961 = (COFF_section*)
3962 myindex ( sizeof_COFF_section, sectab, i );
3963 debugBelch(
3964 "\n"
3965 "section %d\n"
3966 " name `",
3967 i
3968 );
3969 printName ( sectab_i->Name, strtab );
3970 debugBelch(
3971 "'\n"
3972 " vsize %d\n"
3973 " vaddr %d\n"
3974 " data sz %d\n"
3975 " data off %d\n"
3976 " num rel %d\n"
3977 " off rel %d\n"
3978 " ptr raw 0x%x\n",
3979 sectab_i->VirtualSize,
3980 sectab_i->VirtualAddress,
3981 sectab_i->SizeOfRawData,
3982 sectab_i->PointerToRawData,
3983 sectab_i->NumberOfRelocations,
3984 sectab_i->PointerToRelocations,
3985 sectab_i->PointerToRawData
3986 );
3987 reltab = (COFF_reloc*) (
3988 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
3989 );
3990
3991 if ( sectab_i->Characteristics & MYIMAGE_SCN_LNK_NRELOC_OVFL ) {
3992 /* If the relocation field (a short) has overflowed, the
3993 * real count can be found in the first reloc entry.
3994 *
3995 * See Section 4.1 (last para) of the PE spec (rev6.0).
3996 */
3997 COFF_reloc* rel = (COFF_reloc*)
3998 myindex ( sizeof_COFF_reloc, reltab, 0 );
3999 noRelocs = rel->VirtualAddress;
4000 j = 1;
4001 } else {
4002 noRelocs = sectab_i->NumberOfRelocations;
4003 j = 0;
4004 }
4005
4006 for (; j < noRelocs; j++) {
4007 COFF_symbol* sym;
4008 COFF_reloc* rel = (COFF_reloc*)
4009 myindex ( sizeof_COFF_reloc, reltab, j );
4010 debugBelch(
4011 " type 0x%-4x vaddr 0x%-8x name `",
4012 (UInt32)rel->Type,
4013 rel->VirtualAddress );
4014 sym = (COFF_symbol*)
4015 myindex ( sizeof_COFF_symbol, symtab, rel->SymbolTableIndex );
4016 /* Hmm..mysterious looking offset - what's it for? SOF */
4017 printName ( sym->Name, strtab -10 );
4018 debugBelch("'\n" );
4019 }
4020
4021 debugBelch("\n" );
4022 }
4023 debugBelch("\n" );
4024 debugBelch("string table has size 0x%x\n", * (UInt32*)strtab );
4025 debugBelch("---START of string table---\n");
4026 for (i = 4; i < *(Int32*)strtab; i++) {
4027 if (strtab[i] == 0)
4028 debugBelch("\n"); else
4029 debugBelch("%c", strtab[i] );
4030 }
4031 debugBelch("--- END of string table---\n");
4032
4033 debugBelch(&qu