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