Always pass vector values on the stack.
[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 "Stable.h"
31 #include "Proftimer.h"
32
33 #if !defined(mingw32_HOST_OS)
34 #include "posix/Signals.h"
35 #endif
36
37 // get protos for is*()
38 #include <ctype.h>
39
40 #ifdef HAVE_SYS_TYPES_H
41 #include <sys/types.h>
42 #endif
43
44 #include <inttypes.h>
45 #include <stdlib.h>
46 #include <string.h>
47 #include <stdio.h>
48 #include <assert.h>
49
50 #ifdef HAVE_SYS_STAT_H
51 #include <sys/stat.h>
52 #endif
53
54 #if defined(HAVE_DLFCN_H)
55 #include <dlfcn.h>
56 #endif
57
58 #if defined(cygwin32_HOST_OS)
59 #ifdef HAVE_DIRENT_H
60 #include <dirent.h>
61 #endif
62
63 #ifdef HAVE_SYS_TIME_H
64 #include <sys/time.h>
65 #endif
66 #include <regex.h>
67 #include <sys/fcntl.h>
68 #include <sys/termios.h>
69 #include <sys/utime.h>
70 #include <sys/utsname.h>
71 #include <sys/wait.h>
72 #endif
73
74 #if (defined(powerpc_HOST_ARCH) && defined(linux_HOST_OS)) \
75 || (!defined(powerpc_HOST_ARCH) && \
76 ( defined(linux_HOST_OS) || defined(freebsd_HOST_OS) || \
77 defined(dragonfly_HOST_OS) || defined(netbsd_HOST_OS ) || \
78 defined(openbsd_HOST_OS ) || defined(darwin_HOST_OS ) || \
79 defined(kfreebsdgnu_HOST_OS) || defined(gnu_HOST_OS)))
80 /* Don't use mmap on powerpc_HOST_ARCH as mmap doesn't support
81 * reallocating but we need to allocate jump islands just after each
82 * object images. Otherwise relative branches to jump islands can fail
83 * due to 24-bits displacement overflow.
84 */
85 #define USE_MMAP
86 #include <fcntl.h>
87 #include <sys/mman.h>
88
89 #ifdef HAVE_UNISTD_H
90 #include <unistd.h>
91 #endif
92
93 #endif
94
95
96 /* PowerPC has relative branch instructions with only 24 bit displacements
97 * and therefore needs jump islands contiguous with each object code module.
98 */
99 #if (defined(USE_MMAP) && defined(powerpc_HOST_ARCH) && defined(linux_HOST_OS))
100 #define USE_CONTIGUOUS_MMAP 1
101 #else
102 #define USE_CONTIGUOUS_MMAP 0
103 #endif
104
105 #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)
106 # define OBJFORMAT_ELF
107 # include <regex.h> // regex is already used by dlopen() so this is OK
108 // to use here without requiring an additional lib
109 #elif defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
110 # define OBJFORMAT_PEi386
111 # include <windows.h>
112 # include <math.h>
113 #elif defined(darwin_HOST_OS)
114 # define OBJFORMAT_MACHO
115 # include <regex.h>
116 # include <mach/machine.h>
117 # include <mach-o/fat.h>
118 # include <mach-o/loader.h>
119 # include <mach-o/nlist.h>
120 # include <mach-o/reloc.h>
121 #if !defined(HAVE_DLFCN_H)
122 # include <mach-o/dyld.h>
123 #endif
124 #if defined(powerpc_HOST_ARCH)
125 # include <mach-o/ppc/reloc.h>
126 #endif
127 #if defined(x86_64_HOST_ARCH)
128 # include <mach-o/x86_64/reloc.h>
129 #endif
130 #endif
131
132 #if defined(x86_64_HOST_ARCH) && defined(darwin_HOST_OS)
133 #define ALWAYS_PIC
134 #endif
135
136 #if defined(dragonfly_HOST_OS)
137 #include <sys/tls.h>
138 #endif
139
140 // Defining this as 'int' rather than 'const int' means that we don't get
141 // warnings like
142 // error: function might be possible candidate for attribute ‘noreturn’
143 // from gcc:
144 #ifdef DYNAMIC_BY_DEFAULT
145 int dynamicByDefault = 1;
146 #else
147 int dynamicByDefault = 0;
148 #endif
149
150 /* Hash table mapping symbol names to Symbol */
151 static /*Str*/HashTable *symhash;
152
153 /* Hash table mapping symbol names to StgStablePtr */
154 static /*Str*/HashTable *stablehash;
155
156 /* List of currently loaded objects */
157 ObjectCode *objects = NULL; /* initially empty */
158
159 static HsInt loadOc( ObjectCode* oc );
160 static ObjectCode* mkOc( pathchar *path, char *image, int imageSize,
161 char *archiveMemberName
162 #ifndef USE_MMAP
163 #ifdef darwin_HOST_OS
164 , int misalignment
165 #endif
166 #endif
167 );
168
169 // Use wchar_t for pathnames on Windows (#5697)
170 #if defined(mingw32_HOST_OS)
171 #define pathcmp wcscmp
172 #define pathlen wcslen
173 #define pathopen _wfopen
174 #define pathstat _wstat
175 #define struct_stat struct _stat
176 #define open wopen
177 #define WSTR(s) L##s
178 #define PATH_FMT "S"
179 #else
180 #define pathcmp strcmp
181 #define pathlen strlen
182 #define pathopen fopen
183 #define pathstat stat
184 #define struct_stat struct stat
185 #define WSTR(s) s
186 #define PATH_FMT "s"
187 #endif
188
189 static pathchar* pathdup(pathchar *path)
190 {
191 pathchar *ret;
192 #if defined(mingw32_HOST_OS)
193 ret = wcsdup(path);
194 #else
195 /* sigh, strdup() isn't a POSIX function, so do it the long way */
196 ret = stgMallocBytes( strlen(path)+1, "loadObj" );
197 strcpy(ret, path);
198 #endif
199 return ret;
200 }
201
202
203 #if defined(OBJFORMAT_ELF)
204 static int ocVerifyImage_ELF ( ObjectCode* oc );
205 static int ocGetNames_ELF ( ObjectCode* oc );
206 static int ocResolve_ELF ( ObjectCode* oc );
207 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
208 static int ocAllocateSymbolExtras_ELF ( ObjectCode* oc );
209 #endif
210 #elif defined(OBJFORMAT_PEi386)
211 static int ocVerifyImage_PEi386 ( ObjectCode* oc );
212 static int ocGetNames_PEi386 ( ObjectCode* oc );
213 static int ocResolve_PEi386 ( ObjectCode* oc );
214 static void *lookupSymbolInDLLs ( unsigned char *lbl );
215 static void zapTrailingAtSign ( unsigned char *sym );
216 #elif defined(OBJFORMAT_MACHO)
217 static int ocVerifyImage_MachO ( ObjectCode* oc );
218 static int ocGetNames_MachO ( ObjectCode* oc );
219 static int ocResolve_MachO ( ObjectCode* oc );
220
221 #ifndef USE_MMAP
222 static int machoGetMisalignment( FILE * );
223 #endif
224 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
225 static int ocAllocateSymbolExtras_MachO ( ObjectCode* oc );
226 #endif
227 #ifdef powerpc_HOST_ARCH
228 static void machoInitSymbolsWithoutUnderscore( void );
229 #endif
230 #endif
231
232 /* on x86_64 we have a problem with relocating symbol references in
233 * code that was compiled without -fPIC. By default, the small memory
234 * model is used, which assumes that symbol references can fit in a
235 * 32-bit slot. The system dynamic linker makes this work for
236 * references to shared libraries by either (a) allocating a jump
237 * table slot for code references, or (b) moving the symbol at load
238 * time (and copying its contents, if necessary) for data references.
239 *
240 * We unfortunately can't tell whether symbol references are to code
241 * or data. So for now we assume they are code (the vast majority
242 * are), and allocate jump-table slots. Unfortunately this will
243 * SILENTLY generate crashing code for data references. This hack is
244 * enabled by X86_64_ELF_NONPIC_HACK.
245 *
246 * One workaround is to use shared Haskell libraries. This is
247 * coming. Another workaround is to keep the static libraries but
248 * compile them with -fPIC, because that will generate PIC references
249 * to data which can be relocated. The PIC code is still too green to
250 * do this systematically, though.
251 *
252 * See bug #781
253 * See thread http://www.haskell.org/pipermail/cvs-ghc/2007-September/038458.html
254 *
255 * Naming Scheme for Symbol Macros
256 *
257 * SymI_*: symbol is internal to the RTS. It resides in an object
258 * file/library that is statically.
259 * SymE_*: symbol is external to the RTS library. It might be linked
260 * dynamically.
261 *
262 * Sym*_HasProto : the symbol prototype is imported in an include file
263 * or defined explicitly
264 * Sym*_NeedsProto: the symbol is undefined and we add a dummy
265 * default proto extern void sym(void);
266 */
267 #define X86_64_ELF_NONPIC_HACK 1
268
269 /* Link objects into the lower 2Gb on x86_64. GHC assumes the
270 * small memory model on this architecture (see gcc docs,
271 * -mcmodel=small).
272 *
273 * MAP_32BIT not available on OpenBSD/amd64
274 */
275 #if defined(x86_64_HOST_ARCH) && defined(MAP_32BIT)
276 #define TRY_MAP_32BIT MAP_32BIT
277 #else
278 #define TRY_MAP_32BIT 0
279 #endif
280
281 /*
282 * Due to the small memory model (see above), on x86_64 we have to map
283 * all our non-PIC object files into the low 2Gb of the address space
284 * (why 2Gb and not 4Gb? Because all addresses must be reachable
285 * using a 32-bit signed PC-relative offset). On Linux we can do this
286 * using the MAP_32BIT flag to mmap(), however on other OSs
287 * (e.g. *BSD, see #2063, and also on Linux inside Xen, see #2512), we
288 * can't do this. So on these systems, we have to pick a base address
289 * in the low 2Gb of the address space and try to allocate memory from
290 * there.
291 *
292 * We pick a default address based on the OS, but also make this
293 * configurable via an RTS flag (+RTS -xm)
294 */
295 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
296
297 #if defined(MAP_32BIT)
298 // Try to use MAP_32BIT
299 #define MMAP_32BIT_BASE_DEFAULT 0
300 #else
301 // A guess: 1Gb.
302 #define MMAP_32BIT_BASE_DEFAULT 0x40000000
303 #endif
304
305 static void *mmap_32bit_base = (void *)MMAP_32BIT_BASE_DEFAULT;
306 #endif
307
308 /* MAP_ANONYMOUS is MAP_ANON on some systems, e.g. OpenBSD */
309 #if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
310 #define MAP_ANONYMOUS MAP_ANON
311 #endif
312
313 /* -----------------------------------------------------------------------------
314 * Built-in symbols from the RTS
315 */
316
317 typedef struct _RtsSymbolVal {
318 char *lbl;
319 void *addr;
320 } RtsSymbolVal;
321
322 #define Maybe_Stable_Names SymI_HasProto(stg_mkWeakzh) \
323 SymI_HasProto(stg_mkWeakNoFinalizzerzh) \
324 SymI_HasProto(stg_mkWeakForeignEnvzh) \
325 SymI_HasProto(stg_makeStableNamezh) \
326 SymI_HasProto(stg_finalizzeWeakzh)
327
328 #if !defined (mingw32_HOST_OS)
329 #define RTS_POSIX_ONLY_SYMBOLS \
330 SymI_HasProto(__hscore_get_saved_termios) \
331 SymI_HasProto(__hscore_set_saved_termios) \
332 SymI_HasProto(shutdownHaskellAndSignal) \
333 SymI_HasProto(signal_handlers) \
334 SymI_HasProto(stg_sig_install) \
335 SymI_HasProto(rtsTimerSignal) \
336 SymI_HasProto(atexit) \
337 SymI_NeedsProto(nocldstop)
338 #endif
339
340 #if defined (cygwin32_HOST_OS)
341 #define RTS_MINGW_ONLY_SYMBOLS /**/
342 /* Don't have the ability to read import libs / archives, so
343 * we have to stupidly list a lot of what libcygwin.a
344 * exports; sigh.
345 */
346 #define RTS_CYGWIN_ONLY_SYMBOLS \
347 SymI_HasProto(regfree) \
348 SymI_HasProto(regexec) \
349 SymI_HasProto(regerror) \
350 SymI_HasProto(regcomp) \
351 SymI_HasProto(__errno) \
352 SymI_HasProto(access) \
353 SymI_HasProto(chmod) \
354 SymI_HasProto(chdir) \
355 SymI_HasProto(close) \
356 SymI_HasProto(creat) \
357 SymI_HasProto(dup) \
358 SymI_HasProto(dup2) \
359 SymI_HasProto(fstat) \
360 SymI_HasProto(fcntl) \
361 SymI_HasProto(getcwd) \
362 SymI_HasProto(getenv) \
363 SymI_HasProto(lseek) \
364 SymI_HasProto(open) \
365 SymI_HasProto(fpathconf) \
366 SymI_HasProto(pathconf) \
367 SymI_HasProto(stat) \
368 SymI_HasProto(pow) \
369 SymI_HasProto(tanh) \
370 SymI_HasProto(cosh) \
371 SymI_HasProto(sinh) \
372 SymI_HasProto(atan) \
373 SymI_HasProto(acos) \
374 SymI_HasProto(asin) \
375 SymI_HasProto(tan) \
376 SymI_HasProto(cos) \
377 SymI_HasProto(sin) \
378 SymI_HasProto(exp) \
379 SymI_HasProto(log) \
380 SymI_HasProto(sqrt) \
381 SymI_HasProto(localtime_r) \
382 SymI_HasProto(gmtime_r) \
383 SymI_HasProto(mktime) \
384 SymI_NeedsProto(_imp___tzname) \
385 SymI_HasProto(gettimeofday) \
386 SymI_HasProto(timezone) \
387 SymI_HasProto(tcgetattr) \
388 SymI_HasProto(tcsetattr) \
389 SymI_HasProto(memcpy) \
390 SymI_HasProto(memmove) \
391 SymI_HasProto(realloc) \
392 SymI_HasProto(malloc) \
393 SymI_HasProto(free) \
394 SymI_HasProto(fork) \
395 SymI_HasProto(lstat) \
396 SymI_HasProto(isatty) \
397 SymI_HasProto(mkdir) \
398 SymI_HasProto(opendir) \
399 SymI_HasProto(readdir) \
400 SymI_HasProto(rewinddir) \
401 SymI_HasProto(closedir) \
402 SymI_HasProto(link) \
403 SymI_HasProto(mkfifo) \
404 SymI_HasProto(pipe) \
405 SymI_HasProto(read) \
406 SymI_HasProto(rename) \
407 SymI_HasProto(rmdir) \
408 SymI_HasProto(select) \
409 SymI_HasProto(system) \
410 SymI_HasProto(write) \
411 SymI_HasProto(strcmp) \
412 SymI_HasProto(strcpy) \
413 SymI_HasProto(strncpy) \
414 SymI_HasProto(strerror) \
415 SymI_HasProto(sigaddset) \
416 SymI_HasProto(sigemptyset) \
417 SymI_HasProto(sigprocmask) \
418 SymI_HasProto(umask) \
419 SymI_HasProto(uname) \
420 SymI_HasProto(unlink) \
421 SymI_HasProto(utime) \
422 SymI_HasProto(waitpid)
423
424 #elif defined(mingw32_HOST_OS)
425 #define RTS_POSIX_ONLY_SYMBOLS /**/
426 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
427
428 #if HAVE_GETTIMEOFDAY
429 #define RTS_MINGW_GETTIMEOFDAY_SYM SymI_NeedsProto(gettimeofday)
430 #else
431 #define RTS_MINGW_GETTIMEOFDAY_SYM /**/
432 #endif
433
434 #if HAVE___MINGW_VFPRINTF
435 #define RTS___MINGW_VFPRINTF_SYM SymI_HasProto(__mingw_vfprintf)
436 #else
437 #define RTS___MINGW_VFPRINTF_SYM /**/
438 #endif
439
440 #if defined(i386_HOST_ARCH)
441 #define RTS_WIN32_ONLY(X) X
442 #else
443 #define RTS_WIN32_ONLY(X) /**/
444 #endif
445
446 #if defined(x86_64_HOST_ARCH)
447 #define RTS_WIN64_ONLY(X) X
448 #else
449 #define RTS_WIN64_ONLY(X) /**/
450 #endif
451
452 /* These are statically linked from the mingw libraries into the ghc
453 executable, so we have to employ this hack. */
454 #define RTS_MINGW_ONLY_SYMBOLS \
455 SymI_HasProto(stg_asyncReadzh) \
456 SymI_HasProto(stg_asyncWritezh) \
457 SymI_HasProto(stg_asyncDoProczh) \
458 SymI_HasProto(getWin32ProgArgv) \
459 SymI_HasProto(setWin32ProgArgv) \
460 SymI_HasProto(memset) \
461 SymI_HasProto(inet_ntoa) \
462 SymI_HasProto(inet_addr) \
463 SymI_HasProto(htonl) \
464 SymI_HasProto(recvfrom) \
465 SymI_HasProto(listen) \
466 SymI_HasProto(bind) \
467 SymI_HasProto(shutdown) \
468 SymI_HasProto(connect) \
469 SymI_HasProto(htons) \
470 SymI_HasProto(ntohs) \
471 SymI_HasProto(getservbyname) \
472 SymI_HasProto(getservbyport) \
473 SymI_HasProto(getprotobynumber) \
474 SymI_HasProto(getprotobyname) \
475 SymI_HasProto(gethostbyname) \
476 SymI_HasProto(gethostbyaddr) \
477 SymI_HasProto(gethostname) \
478 SymI_HasProto(strcpy) \
479 SymI_HasProto(strncpy) \
480 SymI_HasProto(abort) \
481 RTS_WIN32_ONLY(SymI_NeedsProto(_alloca)) \
482 SymI_HasProto(isxdigit) \
483 SymI_HasProto(isupper) \
484 SymI_HasProto(ispunct) \
485 SymI_HasProto(islower) \
486 SymI_HasProto(isspace) \
487 SymI_HasProto(isprint) \
488 SymI_HasProto(isdigit) \
489 SymI_HasProto(iscntrl) \
490 SymI_HasProto(isalpha) \
491 SymI_HasProto(isalnum) \
492 SymI_HasProto(isascii) \
493 RTS___MINGW_VFPRINTF_SYM \
494 SymI_HasProto(strcmp) \
495 SymI_HasProto(memmove) \
496 SymI_HasProto(realloc) \
497 SymI_HasProto(malloc) \
498 SymI_HasProto(pow) \
499 SymI_HasProto(tanh) \
500 SymI_HasProto(cosh) \
501 SymI_HasProto(sinh) \
502 SymI_HasProto(atan) \
503 SymI_HasProto(acos) \
504 SymI_HasProto(asin) \
505 SymI_HasProto(tan) \
506 SymI_HasProto(cos) \
507 SymI_HasProto(sin) \
508 SymI_HasProto(exp) \
509 SymI_HasProto(log) \
510 SymI_HasProto(sqrt) \
511 SymI_HasProto(powf) \
512 SymI_HasProto(tanhf) \
513 SymI_HasProto(coshf) \
514 SymI_HasProto(sinhf) \
515 SymI_HasProto(atanf) \
516 SymI_HasProto(acosf) \
517 SymI_HasProto(asinf) \
518 SymI_HasProto(tanf) \
519 SymI_HasProto(cosf) \
520 SymI_HasProto(sinf) \
521 SymI_HasProto(expf) \
522 SymI_HasProto(logf) \
523 SymI_HasProto(sqrtf) \
524 SymI_HasProto(erf) \
525 SymI_HasProto(erfc) \
526 SymI_HasProto(erff) \
527 SymI_HasProto(erfcf) \
528 SymI_HasProto(memcpy) \
529 SymI_HasProto(rts_InstallConsoleEvent) \
530 SymI_HasProto(rts_ConsoleHandlerDone) \
531 SymI_NeedsProto(mktime) \
532 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___timezone)) \
533 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___tzname)) \
534 RTS_WIN32_ONLY(SymI_NeedsProto(_imp__tzname)) \
535 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___iob)) \
536 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___osver)) \
537 SymI_NeedsProto(localtime) \
538 SymI_NeedsProto(gmtime) \
539 SymI_NeedsProto(opendir) \
540 SymI_NeedsProto(readdir) \
541 SymI_NeedsProto(rewinddir) \
542 RTS_WIN32_ONLY(SymI_NeedsProto(_imp____mb_cur_max)) \
543 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___pctype)) \
544 RTS_WIN32_ONLY(SymI_NeedsProto(__chkstk)) \
545 RTS_WIN64_ONLY(SymI_NeedsProto(__imp___iob_func)) \
546 RTS_WIN64_ONLY(SymI_NeedsProto(___chkstk_ms)) \
547 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_localeconv)) \
548 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_islower)) \
549 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isspace)) \
550 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isxdigit)) \
551 RTS_WIN64_ONLY(SymI_HasProto(close)) \
552 RTS_WIN64_ONLY(SymI_HasProto(read)) \
553 RTS_WIN64_ONLY(SymI_HasProto(dup)) \
554 RTS_WIN64_ONLY(SymI_HasProto(dup2)) \
555 RTS_WIN64_ONLY(SymI_HasProto(write)) \
556 SymI_NeedsProto(getpid) \
557 RTS_WIN64_ONLY(SymI_HasProto(access)) \
558 SymI_HasProto(chmod) \
559 RTS_WIN64_ONLY(SymI_HasProto(creat)) \
560 RTS_WIN64_ONLY(SymI_HasProto(umask)) \
561 SymI_HasProto(unlink) \
562 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__errno)) \
563 RTS_WIN64_ONLY(SymI_NeedsProto(ftruncate64)) \
564 RTS_WIN64_ONLY(SymI_HasProto(setmode)) \
565 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wstat64)) \
566 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__fstat64)) \
567 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wsopen)) \
568 RTS_WIN64_ONLY(SymI_HasProto(__imp__environ)) \
569 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileAttributesA)) \
570 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileInformationByHandle)) \
571 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileType)) \
572 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetLastError)) \
573 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceFrequency)) \
574 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceCounter)) \
575 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetTickCount)) \
576 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WaitForSingleObject)) \
577 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekConsoleInputA)) \
578 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ReadConsoleInputA)) \
579 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekNamedPipe)) \
580 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__isatty)) \
581 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_select)) \
582 RTS_WIN64_ONLY(SymI_HasProto(isatty)) \
583 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__get_osfhandle)) \
584 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetConsoleMode)) \
585 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetConsoleMode)) \
586 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FlushConsoleInputBuffer)) \
587 RTS_WIN64_ONLY(SymI_HasProto(free)) \
588 RTS_WIN64_ONLY(SymI_NeedsProto(raise)) \
589 RTS_WIN64_ONLY(SymI_NeedsProto(_getpid)) \
590 RTS_WIN64_ONLY(SymI_HasProto(getc)) \
591 RTS_WIN64_ONLY(SymI_HasProto(ungetc)) \
592 RTS_WIN64_ONLY(SymI_HasProto(puts)) \
593 RTS_WIN64_ONLY(SymI_HasProto(putc)) \
594 RTS_WIN64_ONLY(SymI_HasProto(putchar)) \
595 RTS_WIN64_ONLY(SymI_HasProto(fputc)) \
596 RTS_WIN64_ONLY(SymI_HasProto(fread)) \
597 RTS_WIN64_ONLY(SymI_HasProto(fwrite)) \
598 RTS_WIN64_ONLY(SymI_HasProto(ferror)) \
599 RTS_WIN64_ONLY(SymI_HasProto(printf)) \
600 RTS_WIN64_ONLY(SymI_HasProto(fprintf)) \
601 RTS_WIN64_ONLY(SymI_HasProto(sprintf)) \
602 RTS_WIN64_ONLY(SymI_HasProto(vsprintf)) \
603 RTS_WIN64_ONLY(SymI_HasProto(sscanf)) \
604 RTS_WIN64_ONLY(SymI_HasProto(ldexp)) \
605 RTS_WIN64_ONLY(SymI_HasProto(strlen)) \
606 RTS_WIN64_ONLY(SymI_HasProto(strnlen)) \
607 RTS_WIN64_ONLY(SymI_HasProto(strchr)) \
608 RTS_WIN64_ONLY(SymI_HasProto(strtol)) \
609 RTS_WIN64_ONLY(SymI_HasProto(strerror)) \
610 RTS_WIN64_ONLY(SymI_HasProto(memchr)) \
611 RTS_WIN64_ONLY(SymI_HasProto(memcmp)) \
612 RTS_WIN64_ONLY(SymI_HasProto(wcscpy)) \
613 RTS_WIN64_ONLY(SymI_HasProto(wcslen)) \
614 RTS_WIN64_ONLY(SymI_HasProto(_lseeki64)) \
615 RTS_WIN64_ONLY(SymI_HasProto(_wchmod)) \
616 RTS_WIN64_ONLY(SymI_HasProto(closesocket)) \
617 RTS_WIN64_ONLY(SymI_HasProto(send)) \
618 RTS_WIN64_ONLY(SymI_HasProto(recv)) \
619 RTS_WIN64_ONLY(SymI_HasProto(bsearch)) \
620 RTS_WIN64_ONLY(SymI_HasProto(CommandLineToArgvW)) \
621 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmap)) \
622 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmapIndirect)) \
623 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleBitmap)) \
624 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBPatternBrushPt)) \
625 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBitmap)) \
626 RTS_WIN64_ONLY(SymI_HasProto(SetBitmapDimensionEx)) \
627 RTS_WIN64_ONLY(SymI_HasProto(GetBitmapDimensionEx)) \
628 RTS_WIN64_ONLY(SymI_HasProto(GetStockObject)) \
629 RTS_WIN64_ONLY(SymI_HasProto(GetObjectW)) \
630 RTS_WIN64_ONLY(SymI_HasProto(DeleteObject)) \
631 RTS_WIN64_ONLY(SymI_HasProto(SetDIBits)) \
632 RTS_WIN64_ONLY(SymI_HasProto(GetDIBits)) \
633 RTS_WIN64_ONLY(SymI_HasProto(CreateSolidBrush)) \
634 RTS_WIN64_ONLY(SymI_HasProto(CreateHatchBrush)) \
635 RTS_WIN64_ONLY(SymI_HasProto(CreatePatternBrush)) \
636 RTS_WIN64_ONLY(SymI_HasProto(CreateFontW)) \
637 RTS_WIN64_ONLY(SymI_HasProto(AngleArc)) \
638 RTS_WIN64_ONLY(SymI_HasProto(Arc)) \
639 RTS_WIN64_ONLY(SymI_HasProto(ArcTo)) \
640 RTS_WIN64_ONLY(SymI_HasProto(BeginPath)) \
641 RTS_WIN64_ONLY(SymI_HasProto(BitBlt)) \
642 RTS_WIN64_ONLY(SymI_HasProto(CancelDC)) \
643 RTS_WIN64_ONLY(SymI_HasProto(Chord)) \
644 RTS_WIN64_ONLY(SymI_HasProto(CloseFigure)) \
645 RTS_WIN64_ONLY(SymI_HasProto(CombineRgn)) \
646 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleDC)) \
647 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgn)) \
648 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgnIndirect)) \
649 RTS_WIN64_ONLY(SymI_HasProto(CreatePen)) \
650 RTS_WIN64_ONLY(SymI_HasProto(CreatePolygonRgn)) \
651 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgn)) \
652 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgnIndirect)) \
653 RTS_WIN64_ONLY(SymI_HasProto(CreateRoundRectRgn)) \
654 RTS_WIN64_ONLY(SymI_HasProto(DeleteDC)) \
655 RTS_WIN64_ONLY(SymI_HasProto(Ellipse)) \
656 RTS_WIN64_ONLY(SymI_HasProto(EndPath)) \
657 RTS_WIN64_ONLY(SymI_HasProto(EqualRgn)) \
658 RTS_WIN64_ONLY(SymI_HasProto(ExtSelectClipRgn)) \
659 RTS_WIN64_ONLY(SymI_HasProto(FillPath)) \
660 RTS_WIN64_ONLY(SymI_HasProto(FillRgn)) \
661 RTS_WIN64_ONLY(SymI_HasProto(FlattenPath)) \
662 RTS_WIN64_ONLY(SymI_HasProto(FrameRgn)) \
663 RTS_WIN64_ONLY(SymI_HasProto(GetArcDirection)) \
664 RTS_WIN64_ONLY(SymI_HasProto(GetBkColor)) \
665 RTS_WIN64_ONLY(SymI_HasProto(GetBkMode)) \
666 RTS_WIN64_ONLY(SymI_HasProto(GetBrushOrgEx)) \
667 RTS_WIN64_ONLY(SymI_HasProto(GetCurrentObject)) \
668 RTS_WIN64_ONLY(SymI_HasProto(GetDCOrgEx)) \
669 RTS_WIN64_ONLY(SymI_HasProto(GetGraphicsMode)) \
670 RTS_WIN64_ONLY(SymI_HasProto(GetMiterLimit)) \
671 RTS_WIN64_ONLY(SymI_HasProto(GetPolyFillMode)) \
672 RTS_WIN64_ONLY(SymI_HasProto(GetRgnBox)) \
673 RTS_WIN64_ONLY(SymI_HasProto(GetStretchBltMode)) \
674 RTS_WIN64_ONLY(SymI_HasProto(GetTextAlign)) \
675 RTS_WIN64_ONLY(SymI_HasProto(GetTextCharacterExtra)) \
676 RTS_WIN64_ONLY(SymI_HasProto(GetTextColor)) \
677 RTS_WIN64_ONLY(SymI_HasProto(GetTextExtentPoint32W)) \
678 RTS_WIN64_ONLY(SymI_HasProto(InvertRgn)) \
679 RTS_WIN64_ONLY(SymI_HasProto(LineTo)) \
680 RTS_WIN64_ONLY(SymI_HasProto(MaskBlt)) \
681 RTS_WIN64_ONLY(SymI_HasProto(MoveToEx)) \
682 RTS_WIN64_ONLY(SymI_HasProto(OffsetRgn)) \
683 RTS_WIN64_ONLY(SymI_HasProto(PaintRgn)) \
684 RTS_WIN64_ONLY(SymI_HasProto(PathToRegion)) \
685 RTS_WIN64_ONLY(SymI_HasProto(Pie)) \
686 RTS_WIN64_ONLY(SymI_HasProto(PlgBlt)) \
687 RTS_WIN64_ONLY(SymI_HasProto(PolyBezier)) \
688 RTS_WIN64_ONLY(SymI_HasProto(PolyBezierTo)) \
689 RTS_WIN64_ONLY(SymI_HasProto(Polygon)) \
690 RTS_WIN64_ONLY(SymI_HasProto(Polyline)) \
691 RTS_WIN64_ONLY(SymI_HasProto(PolylineTo)) \
692 RTS_WIN64_ONLY(SymI_HasProto(PtInRegion)) \
693 RTS_WIN64_ONLY(SymI_HasProto(Rectangle)) \
694 RTS_WIN64_ONLY(SymI_HasProto(RectInRegion)) \
695 RTS_WIN64_ONLY(SymI_HasProto(RestoreDC)) \
696 RTS_WIN64_ONLY(SymI_HasProto(RoundRect)) \
697 RTS_WIN64_ONLY(SymI_HasProto(SaveDC)) \
698 RTS_WIN64_ONLY(SymI_HasProto(SelectClipPath)) \
699 RTS_WIN64_ONLY(SymI_HasProto(SelectClipRgn)) \
700 RTS_WIN64_ONLY(SymI_HasProto(SelectObject)) \
701 RTS_WIN64_ONLY(SymI_HasProto(SelectPalette)) \
702 RTS_WIN64_ONLY(SymI_HasProto(SetArcDirection)) \
703 RTS_WIN64_ONLY(SymI_HasProto(SetBkColor)) \
704 RTS_WIN64_ONLY(SymI_HasProto(SetBkMode)) \
705 RTS_WIN64_ONLY(SymI_HasProto(SetBrushOrgEx)) \
706 RTS_WIN64_ONLY(SymI_HasProto(SetGraphicsMode)) \
707 RTS_WIN64_ONLY(SymI_HasProto(SetMiterLimit)) \
708 RTS_WIN64_ONLY(SymI_HasProto(SetPolyFillMode)) \
709 RTS_WIN64_ONLY(SymI_HasProto(SetStretchBltMode)) \
710 RTS_WIN64_ONLY(SymI_HasProto(SetTextAlign)) \
711 RTS_WIN64_ONLY(SymI_HasProto(SetTextCharacterExtra)) \
712 RTS_WIN64_ONLY(SymI_HasProto(SetTextColor)) \
713 RTS_WIN64_ONLY(SymI_HasProto(StretchBlt)) \
714 RTS_WIN64_ONLY(SymI_HasProto(StrokeAndFillPath)) \
715 RTS_WIN64_ONLY(SymI_HasProto(StrokePath)) \
716 RTS_WIN64_ONLY(SymI_HasProto(TextOutW)) \
717 RTS_WIN64_ONLY(SymI_HasProto(timeGetTime)) \
718 RTS_WIN64_ONLY(SymI_HasProto(WidenPath)) \
719 RTS_WIN64_ONLY(SymI_HasProto(GetFileSecurityW)) \
720 RTS_WIN64_ONLY(SymI_HasProto(RegCloseKey)) \
721 RTS_WIN64_ONLY(SymI_HasProto(RegConnectRegistryW)) \
722 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyExW)) \
723 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyW)) \
724 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteKeyW)) \
725 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteValueW)) \
726 RTS_WIN64_ONLY(SymI_HasProto(RegEnumKeyW)) \
727 RTS_WIN64_ONLY(SymI_HasProto(RegEnumValueW)) \
728 RTS_WIN64_ONLY(SymI_HasProto(RegFlushKey)) \
729 RTS_WIN64_ONLY(SymI_HasProto(RegLoadKeyW)) \
730 RTS_WIN64_ONLY(SymI_HasProto(RegNotifyChangeKeyValue)) \
731 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyExW)) \
732 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyW)) \
733 RTS_WIN64_ONLY(SymI_HasProto(RegQueryInfoKeyW)) \
734 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueExW)) \
735 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueW)) \
736 RTS_WIN64_ONLY(SymI_HasProto(RegReplaceKeyW)) \
737 RTS_WIN64_ONLY(SymI_HasProto(RegRestoreKeyW)) \
738 RTS_WIN64_ONLY(SymI_HasProto(RegSaveKeyW)) \
739 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueExW)) \
740 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueW)) \
741 RTS_WIN64_ONLY(SymI_HasProto(RegUnLoadKeyW)) \
742 RTS_WIN64_ONLY(SymI_NeedsProto(SHGetFolderPathW)) \
743 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetWindowLongPtrW)) \
744 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetWindowLongPtrW)) \
745 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_MenuItemFromPoint)) \
746 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPoint)) \
747 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPointEx)) \
748 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DeleteObject)) \
749 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_UnmapViewOfFile)) \
750 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CloseHandle)) \
751 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FreeLibrary)) \
752 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetMessageW)) \
753 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TranslateMessage)) \
754 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DispatchMessageW)) \
755 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DefWindowProcW)) \
756 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetDIBits)) \
757 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalAlloc)) \
758 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalFree)) \
759 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateFileW)) \
760 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WriteFile)) \
761 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateCompatibleBitmap)) \
762 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SelectObject)) \
763 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_Polygon)) \
764 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FormatMessageW)) \
765 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__localtime64)) \
766 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__tzname)) \
767 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__timezone)) \
768 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreatePipe)) \
769 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetHandleInformation)) \
770 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetStdHandle)) \
771 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetCurrentProcess)) \
772 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DuplicateHandle)) \
773 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateProcessW)) \
774 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TerminateProcess)) \
775 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__open_osfhandle)) \
776 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetExitCodeProcess)) \
777 RTS_MINGW_GETTIMEOFDAY_SYM \
778 SymI_NeedsProto(closedir)
779
780 #else
781 #define RTS_MINGW_ONLY_SYMBOLS /**/
782 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
783 #endif
784
785
786 #if defined(darwin_HOST_OS) && HAVE_PRINTF_LDBLSTUB
787 #define RTS_DARWIN_ONLY_SYMBOLS \
788 SymI_NeedsProto(asprintf$LDBLStub) \
789 SymI_NeedsProto(err$LDBLStub) \
790 SymI_NeedsProto(errc$LDBLStub) \
791 SymI_NeedsProto(errx$LDBLStub) \
792 SymI_NeedsProto(fprintf$LDBLStub) \
793 SymI_NeedsProto(fscanf$LDBLStub) \
794 SymI_NeedsProto(fwprintf$LDBLStub) \
795 SymI_NeedsProto(fwscanf$LDBLStub) \
796 SymI_NeedsProto(printf$LDBLStub) \
797 SymI_NeedsProto(scanf$LDBLStub) \
798 SymI_NeedsProto(snprintf$LDBLStub) \
799 SymI_NeedsProto(sprintf$LDBLStub) \
800 SymI_NeedsProto(sscanf$LDBLStub) \
801 SymI_NeedsProto(strtold$LDBLStub) \
802 SymI_NeedsProto(swprintf$LDBLStub) \
803 SymI_NeedsProto(swscanf$LDBLStub) \
804 SymI_NeedsProto(syslog$LDBLStub) \
805 SymI_NeedsProto(vasprintf$LDBLStub) \
806 SymI_NeedsProto(verr$LDBLStub) \
807 SymI_NeedsProto(verrc$LDBLStub) \
808 SymI_NeedsProto(verrx$LDBLStub) \
809 SymI_NeedsProto(vfprintf$LDBLStub) \
810 SymI_NeedsProto(vfscanf$LDBLStub) \
811 SymI_NeedsProto(vfwprintf$LDBLStub) \
812 SymI_NeedsProto(vfwscanf$LDBLStub) \
813 SymI_NeedsProto(vprintf$LDBLStub) \
814 SymI_NeedsProto(vscanf$LDBLStub) \
815 SymI_NeedsProto(vsnprintf$LDBLStub) \
816 SymI_NeedsProto(vsprintf$LDBLStub) \
817 SymI_NeedsProto(vsscanf$LDBLStub) \
818 SymI_NeedsProto(vswprintf$LDBLStub) \
819 SymI_NeedsProto(vswscanf$LDBLStub) \
820 SymI_NeedsProto(vsyslog$LDBLStub) \
821 SymI_NeedsProto(vwarn$LDBLStub) \
822 SymI_NeedsProto(vwarnc$LDBLStub) \
823 SymI_NeedsProto(vwarnx$LDBLStub) \
824 SymI_NeedsProto(vwprintf$LDBLStub) \
825 SymI_NeedsProto(vwscanf$LDBLStub) \
826 SymI_NeedsProto(warn$LDBLStub) \
827 SymI_NeedsProto(warnc$LDBLStub) \
828 SymI_NeedsProto(warnx$LDBLStub) \
829 SymI_NeedsProto(wcstold$LDBLStub) \
830 SymI_NeedsProto(wprintf$LDBLStub) \
831 SymI_NeedsProto(wscanf$LDBLStub)
832 #else
833 #define RTS_DARWIN_ONLY_SYMBOLS
834 #endif
835
836 #ifndef SMP
837 # define MAIN_CAP_SYM SymI_HasProto(MainCapability)
838 #else
839 # define MAIN_CAP_SYM
840 #endif
841
842 #if !defined(mingw32_HOST_OS)
843 #define RTS_USER_SIGNALS_SYMBOLS \
844 SymI_HasProto(setIOManagerControlFd) \
845 SymI_HasProto(setIOManagerWakeupFd) \
846 SymI_HasProto(ioManagerWakeup) \
847 SymI_HasProto(blockUserSignals) \
848 SymI_HasProto(unblockUserSignals)
849 #else
850 #define RTS_USER_SIGNALS_SYMBOLS \
851 SymI_HasProto(ioManagerWakeup) \
852 SymI_HasProto(sendIOManagerEvent) \
853 SymI_HasProto(readIOManagerEvent) \
854 SymI_HasProto(getIOManagerEvent) \
855 SymI_HasProto(console_handler)
856 #endif
857
858 #define RTS_LIBFFI_SYMBOLS \
859 SymE_NeedsProto(ffi_prep_cif) \
860 SymE_NeedsProto(ffi_call) \
861 SymE_NeedsProto(ffi_type_void) \
862 SymE_NeedsProto(ffi_type_float) \
863 SymE_NeedsProto(ffi_type_double) \
864 SymE_NeedsProto(ffi_type_sint64) \
865 SymE_NeedsProto(ffi_type_uint64) \
866 SymE_NeedsProto(ffi_type_sint32) \
867 SymE_NeedsProto(ffi_type_uint32) \
868 SymE_NeedsProto(ffi_type_sint16) \
869 SymE_NeedsProto(ffi_type_uint16) \
870 SymE_NeedsProto(ffi_type_sint8) \
871 SymE_NeedsProto(ffi_type_uint8) \
872 SymE_NeedsProto(ffi_type_pointer)
873
874 #ifdef TABLES_NEXT_TO_CODE
875 #define RTS_RET_SYMBOLS /* nothing */
876 #else
877 #define RTS_RET_SYMBOLS \
878 SymI_HasProto(stg_enter_ret) \
879 SymI_HasProto(stg_gc_fun_ret) \
880 SymI_HasProto(stg_ap_v_ret) \
881 SymI_HasProto(stg_ap_f_ret) \
882 SymI_HasProto(stg_ap_d_ret) \
883 SymI_HasProto(stg_ap_l_ret) \
884 SymI_HasProto(stg_ap_v16_ret) \
885 SymI_HasProto(stg_ap_n_ret) \
886 SymI_HasProto(stg_ap_p_ret) \
887 SymI_HasProto(stg_ap_pv_ret) \
888 SymI_HasProto(stg_ap_pp_ret) \
889 SymI_HasProto(stg_ap_ppv_ret) \
890 SymI_HasProto(stg_ap_ppp_ret) \
891 SymI_HasProto(stg_ap_pppv_ret) \
892 SymI_HasProto(stg_ap_pppp_ret) \
893 SymI_HasProto(stg_ap_ppppp_ret) \
894 SymI_HasProto(stg_ap_pppppp_ret)
895 #endif
896
897 /* Modules compiled with -ticky may mention ticky counters */
898 /* This list should marry up with the one in $(TOP)/includes/stg/Ticky.h */
899 #define RTS_TICKY_SYMBOLS \
900 SymI_NeedsProto(ticky_entry_ctrs) \
901 SymI_NeedsProto(top_ct) \
902 \
903 SymI_HasProto(ENT_VIA_NODE_ctr) \
904 SymI_HasProto(ENT_STATIC_THK_ctr) \
905 SymI_HasProto(ENT_DYN_THK_ctr) \
906 SymI_HasProto(ENT_STATIC_FUN_DIRECT_ctr) \
907 SymI_HasProto(ENT_DYN_FUN_DIRECT_ctr) \
908 SymI_HasProto(ENT_STATIC_CON_ctr) \
909 SymI_HasProto(ENT_DYN_CON_ctr) \
910 SymI_HasProto(ENT_STATIC_IND_ctr) \
911 SymI_HasProto(ENT_DYN_IND_ctr) \
912 SymI_HasProto(ENT_PERM_IND_ctr) \
913 SymI_HasProto(ENT_PAP_ctr) \
914 SymI_HasProto(ENT_AP_ctr) \
915 SymI_HasProto(ENT_AP_STACK_ctr) \
916 SymI_HasProto(ENT_BH_ctr) \
917 SymI_HasProto(UNKNOWN_CALL_ctr) \
918 SymI_HasProto(SLOW_CALL_v_ctr) \
919 SymI_HasProto(SLOW_CALL_f_ctr) \
920 SymI_HasProto(SLOW_CALL_d_ctr) \
921 SymI_HasProto(SLOW_CALL_l_ctr) \
922 SymI_HasProto(SLOW_CALL_n_ctr) \
923 SymI_HasProto(SLOW_CALL_p_ctr) \
924 SymI_HasProto(SLOW_CALL_pv_ctr) \
925 SymI_HasProto(SLOW_CALL_pp_ctr) \
926 SymI_HasProto(SLOW_CALL_ppv_ctr) \
927 SymI_HasProto(SLOW_CALL_ppp_ctr) \
928 SymI_HasProto(SLOW_CALL_pppv_ctr) \
929 SymI_HasProto(SLOW_CALL_pppp_ctr) \
930 SymI_HasProto(SLOW_CALL_ppppp_ctr) \
931 SymI_HasProto(SLOW_CALL_pppppp_ctr) \
932 SymI_HasProto(SLOW_CALL_OTHER_ctr) \
933 SymI_HasProto(ticky_slow_call_unevald) \
934 SymI_HasProto(SLOW_CALL_ctr) \
935 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_ctr) \
936 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_CHUNKS_ctr) \
937 SymI_HasProto(KNOWN_CALL_ctr) \
938 SymI_HasProto(KNOWN_CALL_TOO_FEW_ARGS_ctr) \
939 SymI_HasProto(KNOWN_CALL_EXTRA_ARGS_ctr) \
940 SymI_HasProto(SLOW_CALL_FUN_TOO_FEW_ctr) \
941 SymI_HasProto(SLOW_CALL_FUN_CORRECT_ctr) \
942 SymI_HasProto(SLOW_CALL_FUN_TOO_MANY_ctr) \
943 SymI_HasProto(SLOW_CALL_PAP_TOO_FEW_ctr) \
944 SymI_HasProto(SLOW_CALL_PAP_CORRECT_ctr) \
945 SymI_HasProto(SLOW_CALL_PAP_TOO_MANY_ctr) \
946 SymI_HasProto(SLOW_CALL_UNEVALD_ctr) \
947 SymI_HasProto(UPDF_OMITTED_ctr) \
948 SymI_HasProto(UPDF_PUSHED_ctr) \
949 SymI_HasProto(CATCHF_PUSHED_ctr) \
950 SymI_HasProto(UPDF_RCC_PUSHED_ctr) \
951 SymI_HasProto(UPDF_RCC_OMITTED_ctr) \
952 SymI_HasProto(UPD_SQUEEZED_ctr) \
953 SymI_HasProto(UPD_CON_IN_NEW_ctr) \
954 SymI_HasProto(UPD_CON_IN_PLACE_ctr) \
955 SymI_HasProto(UPD_PAP_IN_NEW_ctr) \
956 SymI_HasProto(UPD_PAP_IN_PLACE_ctr) \
957 SymI_HasProto(ALLOC_HEAP_ctr) \
958 SymI_HasProto(ALLOC_HEAP_tot) \
959 SymI_HasProto(ALLOC_FUN_ctr) \
960 SymI_HasProto(ALLOC_FUN_adm) \
961 SymI_HasProto(ALLOC_FUN_gds) \
962 SymI_HasProto(ALLOC_FUN_slp) \
963 SymI_HasProto(UPD_NEW_IND_ctr) \
964 SymI_HasProto(UPD_NEW_PERM_IND_ctr) \
965 SymI_HasProto(UPD_OLD_IND_ctr) \
966 SymI_HasProto(UPD_OLD_PERM_IND_ctr) \
967 SymI_HasProto(UPD_BH_UPDATABLE_ctr) \
968 SymI_HasProto(UPD_BH_SINGLE_ENTRY_ctr) \
969 SymI_HasProto(UPD_CAF_BH_UPDATABLE_ctr) \
970 SymI_HasProto(UPD_CAF_BH_SINGLE_ENTRY_ctr) \
971 SymI_HasProto(GC_SEL_ABANDONED_ctr) \
972 SymI_HasProto(GC_SEL_MINOR_ctr) \
973 SymI_HasProto(GC_SEL_MAJOR_ctr) \
974 SymI_HasProto(GC_FAILED_PROMOTION_ctr) \
975 SymI_HasProto(ALLOC_UP_THK_ctr) \
976 SymI_HasProto(ALLOC_SE_THK_ctr) \
977 SymI_HasProto(ALLOC_THK_adm) \
978 SymI_HasProto(ALLOC_THK_gds) \
979 SymI_HasProto(ALLOC_THK_slp) \
980 SymI_HasProto(ALLOC_CON_ctr) \
981 SymI_HasProto(ALLOC_CON_adm) \
982 SymI_HasProto(ALLOC_CON_gds) \
983 SymI_HasProto(ALLOC_CON_slp) \
984 SymI_HasProto(ALLOC_TUP_ctr) \
985 SymI_HasProto(ALLOC_TUP_adm) \
986 SymI_HasProto(ALLOC_TUP_gds) \
987 SymI_HasProto(ALLOC_TUP_slp) \
988 SymI_HasProto(ALLOC_BH_ctr) \
989 SymI_HasProto(ALLOC_BH_adm) \
990 SymI_HasProto(ALLOC_BH_gds) \
991 SymI_HasProto(ALLOC_BH_slp) \
992 SymI_HasProto(ALLOC_PRIM_ctr) \
993 SymI_HasProto(ALLOC_PRIM_adm) \
994 SymI_HasProto(ALLOC_PRIM_gds) \
995 SymI_HasProto(ALLOC_PRIM_slp) \
996 SymI_HasProto(ALLOC_PAP_ctr) \
997 SymI_HasProto(ALLOC_PAP_adm) \
998 SymI_HasProto(ALLOC_PAP_gds) \
999 SymI_HasProto(ALLOC_PAP_slp) \
1000 SymI_HasProto(ALLOC_TSO_ctr) \
1001 SymI_HasProto(ALLOC_TSO_adm) \
1002 SymI_HasProto(ALLOC_TSO_gds) \
1003 SymI_HasProto(ALLOC_TSO_slp) \
1004 SymI_HasProto(RET_NEW_ctr) \
1005 SymI_HasProto(RET_OLD_ctr) \
1006 SymI_HasProto(RET_UNBOXED_TUP_ctr) \
1007 SymI_HasProto(RET_SEMI_loads_avoided)
1008
1009
1010 // On most platforms, the garbage collector rewrites references
1011 // to small integer and char objects to a set of common, shared ones.
1012 //
1013 // We don't do this when compiling to Windows DLLs at the moment because
1014 // it doesn't support cross package data references well.
1015 //
1016 #if defined(COMPILING_WINDOWS_DLL)
1017 #define RTS_INTCHAR_SYMBOLS
1018 #else
1019 #define RTS_INTCHAR_SYMBOLS \
1020 SymI_HasProto(stg_CHARLIKE_closure) \
1021 SymI_HasProto(stg_INTLIKE_closure)
1022 #endif
1023
1024
1025 #define RTS_SYMBOLS \
1026 Maybe_Stable_Names \
1027 RTS_TICKY_SYMBOLS \
1028 SymI_HasProto(StgReturn) \
1029 SymI_HasProto(stg_gc_noregs) \
1030 SymI_HasProto(stg_ret_v_info) \
1031 SymI_HasProto(stg_ret_p_info) \
1032 SymI_HasProto(stg_ret_n_info) \
1033 SymI_HasProto(stg_ret_f_info) \
1034 SymI_HasProto(stg_ret_d_info) \
1035 SymI_HasProto(stg_ret_l_info) \
1036 SymI_HasProto(stg_gc_prim_p) \
1037 SymI_HasProto(stg_gc_prim_pp) \
1038 SymI_HasProto(stg_gc_prim_n) \
1039 SymI_HasProto(stg_enter_info) \
1040 SymI_HasProto(__stg_gc_enter_1) \
1041 SymI_HasProto(stg_gc_unpt_r1) \
1042 SymI_HasProto(stg_gc_unbx_r1) \
1043 SymI_HasProto(stg_gc_f1) \
1044 SymI_HasProto(stg_gc_d1) \
1045 SymI_HasProto(stg_gc_l1) \
1046 SymI_HasProto(stg_gc_pp) \
1047 SymI_HasProto(stg_gc_ppp) \
1048 SymI_HasProto(stg_gc_pppp) \
1049 SymI_HasProto(__stg_gc_fun) \
1050 SymI_HasProto(stg_gc_fun_info) \
1051 SymI_HasProto(stg_yield_noregs) \
1052 SymI_HasProto(stg_yield_to_interpreter) \
1053 SymI_HasProto(stg_block_noregs) \
1054 SymI_HasProto(stg_block_takemvar) \
1055 SymI_HasProto(stg_block_putmvar) \
1056 MAIN_CAP_SYM \
1057 SymI_HasProto(MallocFailHook) \
1058 SymI_HasProto(OnExitHook) \
1059 SymI_HasProto(OutOfHeapHook) \
1060 SymI_HasProto(StackOverflowHook) \
1061 SymI_HasProto(addDLL) \
1062 SymI_HasProto(__int_encodeDouble) \
1063 SymI_HasProto(__word_encodeDouble) \
1064 SymI_HasProto(__2Int_encodeDouble) \
1065 SymI_HasProto(__int_encodeFloat) \
1066 SymI_HasProto(__word_encodeFloat) \
1067 SymI_HasProto(stg_atomicallyzh) \
1068 SymI_HasProto(barf) \
1069 SymI_HasProto(debugBelch) \
1070 SymI_HasProto(errorBelch) \
1071 SymI_HasProto(sysErrorBelch) \
1072 SymI_HasProto(stg_getMaskingStatezh) \
1073 SymI_HasProto(stg_maskAsyncExceptionszh) \
1074 SymI_HasProto(stg_maskUninterruptiblezh) \
1075 SymI_HasProto(stg_catchzh) \
1076 SymI_HasProto(stg_catchRetryzh) \
1077 SymI_HasProto(stg_catchSTMzh) \
1078 SymI_HasProto(stg_checkzh) \
1079 SymI_HasProto(closure_flags) \
1080 SymI_HasProto(cmp_thread) \
1081 SymI_HasProto(createAdjustor) \
1082 SymI_HasProto(stg_decodeDoublezu2Intzh) \
1083 SymI_HasProto(stg_decodeFloatzuIntzh) \
1084 SymI_HasProto(defaultsHook) \
1085 SymI_HasProto(stg_delayzh) \
1086 SymI_HasProto(stg_deRefWeakzh) \
1087 SymI_HasProto(stg_deRefStablePtrzh) \
1088 SymI_HasProto(dirty_MUT_VAR) \
1089 SymI_HasProto(dirty_TVAR) \
1090 SymI_HasProto(stg_forkzh) \
1091 SymI_HasProto(stg_forkOnzh) \
1092 SymI_HasProto(forkProcess) \
1093 SymI_HasProto(forkOS_createThread) \
1094 SymI_HasProto(freeHaskellFunctionPtr) \
1095 SymI_HasProto(getOrSetGHCConcSignalSignalHandlerStore) \
1096 SymI_HasProto(getOrSetGHCConcWindowsPendingDelaysStore) \
1097 SymI_HasProto(getOrSetGHCConcWindowsIOManagerThreadStore) \
1098 SymI_HasProto(getOrSetGHCConcWindowsProddingStore) \
1099 SymI_HasProto(getOrSetSystemEventThreadEventManagerStore) \
1100 SymI_HasProto(getOrSetSystemEventThreadIOManagerThreadStore) \
1101 SymI_HasProto(getGCStats) \
1102 SymI_HasProto(getGCStatsEnabled) \
1103 SymI_HasProto(genSymZh) \
1104 SymI_HasProto(genericRaise) \
1105 SymI_HasProto(getProgArgv) \
1106 SymI_HasProto(getFullProgArgv) \
1107 SymI_HasProto(getStablePtr) \
1108 SymI_HasProto(hs_init) \
1109 SymI_HasProto(hs_exit) \
1110 SymI_HasProto(hs_set_argv) \
1111 SymI_HasProto(hs_add_root) \
1112 SymI_HasProto(hs_perform_gc) \
1113 SymI_HasProto(hs_free_stable_ptr) \
1114 SymI_HasProto(hs_free_fun_ptr) \
1115 SymI_HasProto(hs_hpc_rootModule) \
1116 SymI_HasProto(hs_hpc_module) \
1117 SymI_HasProto(initLinker) \
1118 SymI_HasProto(stg_unpackClosurezh) \
1119 SymI_HasProto(stg_getApStackValzh) \
1120 SymI_HasProto(stg_getSparkzh) \
1121 SymI_HasProto(stg_numSparkszh) \
1122 SymI_HasProto(stg_isCurrentThreadBoundzh) \
1123 SymI_HasProto(stg_isEmptyMVarzh) \
1124 SymI_HasProto(stg_killThreadzh) \
1125 SymI_HasProto(loadArchive) \
1126 SymI_HasProto(loadObj) \
1127 SymI_HasProto(insertStableSymbol) \
1128 SymI_HasProto(insertSymbol) \
1129 SymI_HasProto(lookupSymbol) \
1130 SymI_HasProto(stg_makeStablePtrzh) \
1131 SymI_HasProto(stg_mkApUpd0zh) \
1132 SymI_HasProto(stg_myThreadIdzh) \
1133 SymI_HasProto(stg_labelThreadzh) \
1134 SymI_HasProto(stg_newArrayzh) \
1135 SymI_HasProto(stg_newArrayArrayzh) \
1136 SymI_HasProto(stg_newBCOzh) \
1137 SymI_HasProto(stg_newByteArrayzh) \
1138 SymI_HasProto_redirect(newCAF, newDynCAF) \
1139 SymI_HasProto(stg_newMVarzh) \
1140 SymI_HasProto(stg_newMutVarzh) \
1141 SymI_HasProto(stg_newTVarzh) \
1142 SymI_HasProto(stg_noDuplicatezh) \
1143 SymI_HasProto(stg_atomicModifyMutVarzh) \
1144 SymI_HasProto(stg_casMutVarzh) \
1145 SymI_HasProto(stg_newPinnedByteArrayzh) \
1146 SymI_HasProto(stg_newAlignedPinnedByteArrayzh) \
1147 SymI_HasProto(newSpark) \
1148 SymI_HasProto(performGC) \
1149 SymI_HasProto(performMajorGC) \
1150 SymI_HasProto(prog_argc) \
1151 SymI_HasProto(prog_argv) \
1152 SymI_HasProto(stg_putMVarzh) \
1153 SymI_HasProto(stg_raisezh) \
1154 SymI_HasProto(stg_raiseIOzh) \
1155 SymI_HasProto(stg_readTVarzh) \
1156 SymI_HasProto(stg_readTVarIOzh) \
1157 SymI_HasProto(resumeThread) \
1158 SymI_HasProto(setNumCapabilities) \
1159 SymI_HasProto(getNumberOfProcessors) \
1160 SymI_HasProto(resolveObjs) \
1161 SymI_HasProto(stg_retryzh) \
1162 SymI_HasProto(rts_apply) \
1163 SymI_HasProto(rts_checkSchedStatus) \
1164 SymI_HasProto(rts_eval) \
1165 SymI_HasProto(rts_evalIO) \
1166 SymI_HasProto(rts_evalLazyIO) \
1167 SymI_HasProto(rts_evalStableIO) \
1168 SymI_HasProto(rts_eval_) \
1169 SymI_HasProto(rts_getBool) \
1170 SymI_HasProto(rts_getChar) \
1171 SymI_HasProto(rts_getDouble) \
1172 SymI_HasProto(rts_getFloat) \
1173 SymI_HasProto(rts_getInt) \
1174 SymI_HasProto(rts_getInt8) \
1175 SymI_HasProto(rts_getInt16) \
1176 SymI_HasProto(rts_getInt32) \
1177 SymI_HasProto(rts_getInt64) \
1178 SymI_HasProto(rts_getPtr) \
1179 SymI_HasProto(rts_getFunPtr) \
1180 SymI_HasProto(rts_getStablePtr) \
1181 SymI_HasProto(rts_getThreadId) \
1182 SymI_HasProto(rts_getWord) \
1183 SymI_HasProto(rts_getWord8) \
1184 SymI_HasProto(rts_getWord16) \
1185 SymI_HasProto(rts_getWord32) \
1186 SymI_HasProto(rts_getWord64) \
1187 SymI_HasProto(rts_lock) \
1188 SymI_HasProto(rts_mkBool) \
1189 SymI_HasProto(rts_mkChar) \
1190 SymI_HasProto(rts_mkDouble) \
1191 SymI_HasProto(rts_mkFloat) \
1192 SymI_HasProto(rts_mkInt) \
1193 SymI_HasProto(rts_mkInt8) \
1194 SymI_HasProto(rts_mkInt16) \
1195 SymI_HasProto(rts_mkInt32) \
1196 SymI_HasProto(rts_mkInt64) \
1197 SymI_HasProto(rts_mkPtr) \
1198 SymI_HasProto(rts_mkFunPtr) \
1199 SymI_HasProto(rts_mkStablePtr) \
1200 SymI_HasProto(rts_mkString) \
1201 SymI_HasProto(rts_mkWord) \
1202 SymI_HasProto(rts_mkWord8) \
1203 SymI_HasProto(rts_mkWord16) \
1204 SymI_HasProto(rts_mkWord32) \
1205 SymI_HasProto(rts_mkWord64) \
1206 SymI_HasProto(rts_unlock) \
1207 SymI_HasProto(rts_unsafeGetMyCapability) \
1208 SymI_HasProto(rtsSupportsBoundThreads) \
1209 SymI_HasProto(rts_isProfiled) \
1210 SymI_HasProto(setProgArgv) \
1211 SymI_HasProto(startupHaskell) \
1212 SymI_HasProto(shutdownHaskell) \
1213 SymI_HasProto(shutdownHaskellAndExit) \
1214 SymI_HasProto(stable_ptr_table) \
1215 SymI_HasProto(stackOverflow) \
1216 SymI_HasProto(stg_CAF_BLACKHOLE_info) \
1217 SymI_HasProto(stg_BLACKHOLE_info) \
1218 SymI_HasProto(__stg_EAGER_BLACKHOLE_info) \
1219 SymI_HasProto(stg_BLOCKING_QUEUE_CLEAN_info) \
1220 SymI_HasProto(stg_BLOCKING_QUEUE_DIRTY_info) \
1221 SymI_HasProto(startTimer) \
1222 SymI_HasProto(stg_MVAR_CLEAN_info) \
1223 SymI_HasProto(stg_MVAR_DIRTY_info) \
1224 SymI_HasProto(stg_TVAR_CLEAN_info) \
1225 SymI_HasProto(stg_TVAR_DIRTY_info) \
1226 SymI_HasProto(stg_IND_STATIC_info) \
1227 SymI_HasProto(stg_ARR_WORDS_info) \
1228 SymI_HasProto(stg_MUT_ARR_PTRS_DIRTY_info) \
1229 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN_info) \
1230 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN0_info) \
1231 SymI_HasProto(stg_WEAK_info) \
1232 SymI_HasProto(stg_ap_v_info) \
1233 SymI_HasProto(stg_ap_f_info) \
1234 SymI_HasProto(stg_ap_d_info) \
1235 SymI_HasProto(stg_ap_l_info) \
1236 SymI_HasProto(stg_ap_v16_info) \
1237 SymI_HasProto(stg_ap_n_info) \
1238 SymI_HasProto(stg_ap_p_info) \
1239 SymI_HasProto(stg_ap_pv_info) \
1240 SymI_HasProto(stg_ap_pp_info) \
1241 SymI_HasProto(stg_ap_ppv_info) \
1242 SymI_HasProto(stg_ap_ppp_info) \
1243 SymI_HasProto(stg_ap_pppv_info) \
1244 SymI_HasProto(stg_ap_pppp_info) \
1245 SymI_HasProto(stg_ap_ppppp_info) \
1246 SymI_HasProto(stg_ap_pppppp_info) \
1247 SymI_HasProto(stg_ap_0_fast) \
1248 SymI_HasProto(stg_ap_v_fast) \
1249 SymI_HasProto(stg_ap_f_fast) \
1250 SymI_HasProto(stg_ap_d_fast) \
1251 SymI_HasProto(stg_ap_l_fast) \
1252 SymI_HasProto(stg_ap_v16_fast) \
1253 SymI_HasProto(stg_ap_n_fast) \
1254 SymI_HasProto(stg_ap_p_fast) \
1255 SymI_HasProto(stg_ap_pv_fast) \
1256 SymI_HasProto(stg_ap_pp_fast) \
1257 SymI_HasProto(stg_ap_ppv_fast) \
1258 SymI_HasProto(stg_ap_ppp_fast) \
1259 SymI_HasProto(stg_ap_pppv_fast) \
1260 SymI_HasProto(stg_ap_pppp_fast) \
1261 SymI_HasProto(stg_ap_ppppp_fast) \
1262 SymI_HasProto(stg_ap_pppppp_fast) \
1263 SymI_HasProto(stg_ap_1_upd_info) \
1264 SymI_HasProto(stg_ap_2_upd_info) \
1265 SymI_HasProto(stg_ap_3_upd_info) \
1266 SymI_HasProto(stg_ap_4_upd_info) \
1267 SymI_HasProto(stg_ap_5_upd_info) \
1268 SymI_HasProto(stg_ap_6_upd_info) \
1269 SymI_HasProto(stg_ap_7_upd_info) \
1270 SymI_HasProto(stg_exit) \
1271 SymI_HasProto(stg_sel_0_upd_info) \
1272 SymI_HasProto(stg_sel_10_upd_info) \
1273 SymI_HasProto(stg_sel_11_upd_info) \
1274 SymI_HasProto(stg_sel_12_upd_info) \
1275 SymI_HasProto(stg_sel_13_upd_info) \
1276 SymI_HasProto(stg_sel_14_upd_info) \
1277 SymI_HasProto(stg_sel_15_upd_info) \
1278 SymI_HasProto(stg_sel_1_upd_info) \
1279 SymI_HasProto(stg_sel_2_upd_info) \
1280 SymI_HasProto(stg_sel_3_upd_info) \
1281 SymI_HasProto(stg_sel_4_upd_info) \
1282 SymI_HasProto(stg_sel_5_upd_info) \
1283 SymI_HasProto(stg_sel_6_upd_info) \
1284 SymI_HasProto(stg_sel_7_upd_info) \
1285 SymI_HasProto(stg_sel_8_upd_info) \
1286 SymI_HasProto(stg_sel_9_upd_info) \
1287 SymI_HasProto(stg_upd_frame_info) \
1288 SymI_HasProto(stg_bh_upd_frame_info) \
1289 SymI_HasProto(suspendThread) \
1290 SymI_HasProto(stg_takeMVarzh) \
1291 SymI_HasProto(stg_threadStatuszh) \
1292 SymI_HasProto(stg_tryPutMVarzh) \
1293 SymI_HasProto(stg_tryTakeMVarzh) \
1294 SymI_HasProto(stg_unmaskAsyncExceptionszh) \
1295 SymI_HasProto(unloadObj) \
1296 SymI_HasProto(stg_unsafeThawArrayzh) \
1297 SymI_HasProto(stg_waitReadzh) \
1298 SymI_HasProto(stg_waitWritezh) \
1299 SymI_HasProto(stg_writeTVarzh) \
1300 SymI_HasProto(stg_yieldzh) \
1301 SymI_NeedsProto(stg_interp_constr_entry) \
1302 SymI_HasProto(stg_arg_bitmaps) \
1303 SymI_HasProto(large_alloc_lim) \
1304 SymI_HasProto(g0) \
1305 SymI_HasProto(allocate) \
1306 SymI_HasProto(allocateExec) \
1307 SymI_HasProto(freeExec) \
1308 SymI_HasProto(getAllocations) \
1309 SymI_HasProto(revertCAFs) \
1310 SymI_HasProto(RtsFlags) \
1311 SymI_NeedsProto(rts_breakpoint_io_action) \
1312 SymI_NeedsProto(rts_stop_next_breakpoint) \
1313 SymI_NeedsProto(rts_stop_on_exception) \
1314 SymI_HasProto(stopTimer) \
1315 SymI_HasProto(n_capabilities) \
1316 SymI_HasProto(enabled_capabilities) \
1317 SymI_HasProto(stg_traceCcszh) \
1318 SymI_HasProto(stg_traceEventzh) \
1319 SymI_HasProto(stg_traceMarkerzh) \
1320 SymI_HasProto(getMonotonicNSec) \
1321 SymI_HasProto(lockFile) \
1322 SymI_HasProto(unlockFile) \
1323 SymI_HasProto(startProfTimer) \
1324 SymI_HasProto(stopProfTimer) \
1325 RTS_USER_SIGNALS_SYMBOLS \
1326 RTS_INTCHAR_SYMBOLS
1327
1328
1329 // 64-bit support functions in libgcc.a
1330 #if defined(__GNUC__) && SIZEOF_VOID_P <= 4 && !defined(_ABIN32)
1331 #define RTS_LIBGCC_SYMBOLS \
1332 SymI_NeedsProto(__divdi3) \
1333 SymI_NeedsProto(__udivdi3) \
1334 SymI_NeedsProto(__moddi3) \
1335 SymI_NeedsProto(__umoddi3) \
1336 SymI_NeedsProto(__muldi3) \
1337 SymI_NeedsProto(__ashldi3) \
1338 SymI_NeedsProto(__ashrdi3) \
1339 SymI_NeedsProto(__lshrdi3) \
1340 SymI_NeedsProto(__fixunsdfdi)
1341 #else
1342 #define RTS_LIBGCC_SYMBOLS
1343 #endif
1344
1345 #if defined(darwin_HOST_OS) && defined(powerpc_HOST_ARCH)
1346 // Symbols that don't have a leading underscore
1347 // on Mac OS X. They have to receive special treatment,
1348 // see machoInitSymbolsWithoutUnderscore()
1349 #define RTS_MACHO_NOUNDERLINE_SYMBOLS \
1350 SymI_NeedsProto(saveFP) \
1351 SymI_NeedsProto(restFP)
1352 #endif
1353
1354 /* entirely bogus claims about types of these symbols */
1355 #define SymI_NeedsProto(vvv) extern void vvv(void);
1356 #if defined(COMPILING_WINDOWS_DLL)
1357 #define SymE_HasProto(vvv) SymE_HasProto(vvv);
1358 # if defined(x86_64_HOST_ARCH)
1359 # define SymE_NeedsProto(vvv) extern void __imp_ ## vvv (void);
1360 # else
1361 # define SymE_NeedsProto(vvv) extern void _imp__ ## vvv (void);
1362 # endif
1363 #else
1364 #define SymE_NeedsProto(vvv) SymI_NeedsProto(vvv);
1365 #define SymE_HasProto(vvv) SymI_HasProto(vvv)
1366 #endif
1367 #define SymI_HasProto(vvv) /**/
1368 #define SymI_HasProto_redirect(vvv,xxx) /**/
1369 RTS_SYMBOLS
1370 RTS_RET_SYMBOLS
1371 RTS_POSIX_ONLY_SYMBOLS
1372 RTS_MINGW_ONLY_SYMBOLS
1373 RTS_CYGWIN_ONLY_SYMBOLS
1374 RTS_DARWIN_ONLY_SYMBOLS
1375 RTS_LIBGCC_SYMBOLS
1376 RTS_LIBFFI_SYMBOLS
1377 #undef SymI_NeedsProto
1378 #undef SymI_HasProto
1379 #undef SymI_HasProto_redirect
1380 #undef SymE_HasProto
1381 #undef SymE_NeedsProto
1382
1383 #ifdef LEADING_UNDERSCORE
1384 #define MAYBE_LEADING_UNDERSCORE_STR(s) ("_" s)
1385 #else
1386 #define MAYBE_LEADING_UNDERSCORE_STR(s) (s)
1387 #endif
1388
1389 #define SymI_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1390 (void*)(&(vvv)) },
1391 #define SymE_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1392 (void*)DLL_IMPORT_DATA_REF(vvv) },
1393
1394 #define SymI_NeedsProto(vvv) SymI_HasProto(vvv)
1395 #define SymE_NeedsProto(vvv) SymE_HasProto(vvv)
1396
1397 // SymI_HasProto_redirect allows us to redirect references to one symbol to
1398 // another symbol. See newCAF/newDynCAF for an example.
1399 #define SymI_HasProto_redirect(vvv,xxx) \
1400 { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1401 (void*)(&(xxx)) },
1402
1403 static RtsSymbolVal rtsSyms[] = {
1404 RTS_SYMBOLS
1405 RTS_RET_SYMBOLS
1406 RTS_POSIX_ONLY_SYMBOLS
1407 RTS_MINGW_ONLY_SYMBOLS
1408 RTS_CYGWIN_ONLY_SYMBOLS
1409 RTS_DARWIN_ONLY_SYMBOLS
1410 RTS_LIBGCC_SYMBOLS
1411 RTS_LIBFFI_SYMBOLS
1412 #if defined(darwin_HOST_OS) && defined(i386_HOST_ARCH)
1413 // dyld stub code contains references to this,
1414 // but it should never be called because we treat
1415 // lazy pointers as nonlazy.
1416 { "dyld_stub_binding_helper", (void*)0xDEADBEEF },
1417 #endif
1418 { 0, 0 } /* sentinel */
1419 };
1420
1421
1422 /* -----------------------------------------------------------------------------
1423 * Insert symbols into hash tables, checking for duplicates.
1424 */
1425
1426 static void ghciInsertStrHashTable ( pathchar* obj_name,
1427 HashTable *table,
1428 char* key,
1429 void *data
1430 )
1431 {
1432 if (lookupHashTable(table, (StgWord)key) == NULL)
1433 {
1434 insertStrHashTable(table, (StgWord)key, data);
1435 return;
1436 }
1437 debugBelch(
1438 "\n\n"
1439 "GHCi runtime linker: fatal error: I found a duplicate definition for symbol\n"
1440 " %s\n"
1441 "whilst processing object file\n"
1442 " %" PATH_FMT "\n"
1443 "This could be caused by:\n"
1444 " * Loading two different object files which export the same symbol\n"
1445 " * Specifying the same object file twice on the GHCi command line\n"
1446 " * An incorrect `package.conf' entry, causing some object to be\n"
1447 " loaded twice.\n"
1448 "GHCi cannot safely continue in this situation. Exiting now. Sorry.\n"
1449 "\n",
1450 (char*)key,
1451 obj_name
1452 );
1453 stg_exit(1);
1454 }
1455 /* -----------------------------------------------------------------------------
1456 * initialize the object linker
1457 */
1458
1459
1460 static int linker_init_done = 0 ;
1461
1462 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1463 static void *dl_prog_handle;
1464 static regex_t re_invalid;
1465 static regex_t re_realso;
1466 #ifdef THREADED_RTS
1467 static Mutex dl_mutex; // mutex to protect dlopen/dlerror critical section
1468 #endif
1469 #endif
1470
1471 void
1472 initLinker( void )
1473 {
1474 RtsSymbolVal *sym;
1475 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1476 int compileResult;
1477 #endif
1478
1479 IF_DEBUG(linker, debugBelch("initLinker: start\n"));
1480
1481 /* Make initLinker idempotent, so we can call it
1482 before every relevant operation; that means we
1483 don't need to initialise the linker separately */
1484 if (linker_init_done == 1) {
1485 IF_DEBUG(linker, debugBelch("initLinker: idempotent return\n"));
1486 return;
1487 } else {
1488 linker_init_done = 1;
1489 }
1490
1491 #if defined(THREADED_RTS) && (defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO))
1492 initMutex(&dl_mutex);
1493 #endif
1494 stablehash = allocStrHashTable();
1495 symhash = allocStrHashTable();
1496
1497 /* populate the symbol table with stuff from the RTS */
1498 for (sym = rtsSyms; sym->lbl != NULL; sym++) {
1499 ghciInsertStrHashTable(WSTR("(GHCi built-in symbols)"),
1500 symhash, sym->lbl, sym->addr);
1501 IF_DEBUG(linker, debugBelch("initLinker: inserting rts symbol %s, %p\n", sym->lbl, sym->addr));
1502 }
1503 # if defined(OBJFORMAT_MACHO) && defined(powerpc_HOST_ARCH)
1504 machoInitSymbolsWithoutUnderscore();
1505 # endif
1506
1507 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1508 # if defined(RTLD_DEFAULT)
1509 dl_prog_handle = RTLD_DEFAULT;
1510 # else
1511 dl_prog_handle = dlopen(NULL, RTLD_LAZY);
1512 # endif /* RTLD_DEFAULT */
1513
1514 compileResult = regcomp(&re_invalid,
1515 "(([^ \t()])+\\.so([^ \t:()])*):([ \t])*(invalid ELF header|file too short)",
1516 REG_EXTENDED);
1517 if (compileResult != 0) {
1518 barf("Compiling re_invalid failed");
1519 }
1520 compileResult = regcomp(&re_realso,
1521 "(GROUP|INPUT) *\\( *([^ )]+)",
1522 REG_EXTENDED);
1523 if (compileResult != 0) {
1524 barf("Compiling re_realso failed");
1525 }
1526 # endif
1527
1528 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1529 if (RtsFlags.MiscFlags.linkerMemBase != 0) {
1530 // User-override for mmap_32bit_base
1531 mmap_32bit_base = (void*)RtsFlags.MiscFlags.linkerMemBase;
1532 }
1533 #endif
1534
1535 #if defined(mingw32_HOST_OS)
1536 /*
1537 * These two libraries cause problems when added to the static link,
1538 * but are necessary for resolving symbols in GHCi, hence we load
1539 * them manually here.
1540 */
1541 addDLL(WSTR("msvcrt"));
1542 addDLL(WSTR("kernel32"));
1543 #endif
1544
1545 IF_DEBUG(linker, debugBelch("initLinker: done\n"));
1546 return;
1547 }
1548
1549 void
1550 exitLinker( void ) {
1551 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1552 if (linker_init_done == 1) {
1553 regfree(&re_invalid);
1554 regfree(&re_realso);
1555 #ifdef THREADED_RTS
1556 closeMutex(&dl_mutex);
1557 #endif
1558 }
1559 #endif
1560 }
1561
1562 /* -----------------------------------------------------------------------------
1563 * Loading DLL or .so dynamic libraries
1564 * -----------------------------------------------------------------------------
1565 *
1566 * Add a DLL from which symbols may be found. In the ELF case, just
1567 * do RTLD_GLOBAL-style add, so no further messing around needs to
1568 * happen in order that symbols in the loaded .so are findable --
1569 * lookupSymbol() will subsequently see them by dlsym on the program's
1570 * dl-handle. Returns NULL if success, otherwise ptr to an err msg.
1571 *
1572 * In the PEi386 case, open the DLLs and put handles to them in a
1573 * linked list. When looking for a symbol, try all handles in the
1574 * list. This means that we need to load even DLLs that are guaranteed
1575 * to be in the ghc.exe image already, just so we can get a handle
1576 * to give to loadSymbol, so that we can find the symbols. For such
1577 * libraries, the LoadLibrary call should be a no-op except for returning
1578 * the handle.
1579 *
1580 */
1581
1582 #if defined(OBJFORMAT_PEi386)
1583 /* A record for storing handles into DLLs. */
1584
1585 typedef
1586 struct _OpenedDLL {
1587 pathchar* name;
1588 struct _OpenedDLL* next;
1589 HINSTANCE instance;
1590 }
1591 OpenedDLL;
1592
1593 /* A list thereof. */
1594 static OpenedDLL* opened_dlls = NULL;
1595 #endif
1596
1597 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1598
1599 /* Suppose in ghci we load a temporary SO for a module containing
1600 f = 1
1601 and then modify the module, recompile, and load another temporary
1602 SO with
1603 f = 2
1604 Then as we don't unload the first SO, dlsym will find the
1605 f = 1
1606 symbol whereas we want the
1607 f = 2
1608 symbol. We therefore need to keep our own SO handle list, and
1609 try SOs in the right order. */
1610
1611 typedef
1612 struct _OpenedSO {
1613 struct _OpenedSO* next;
1614 void *handle;
1615 }
1616 OpenedSO;
1617
1618 /* A list thereof. */
1619 static OpenedSO* openedSOs = NULL;
1620
1621 static const char *
1622 internal_dlopen(const char *dll_name)
1623 {
1624 OpenedSO* o_so;
1625 void *hdl;
1626 const char *errmsg;
1627 char *errmsg_copy;
1628
1629 // omitted: RTLD_NOW
1630 // see http://www.haskell.org/pipermail/cvs-ghc/2007-September/038570.html
1631 IF_DEBUG(linker,
1632 debugBelch("internal_dlopen: dll_name = '%s'\n", dll_name));
1633
1634 //-------------- Begin critical section ------------------
1635 // This critical section is necessary because dlerror() is not
1636 // required to be reentrant (see POSIX -- IEEE Std 1003.1-2008)
1637 // Also, the error message returned must be copied to preserve it
1638 // (see POSIX also)
1639
1640 ACQUIRE_LOCK(&dl_mutex);
1641 hdl = dlopen(dll_name, RTLD_LAZY | RTLD_GLOBAL);
1642
1643 errmsg = NULL;
1644 if (hdl == NULL) {
1645 /* dlopen failed; return a ptr to the error msg. */
1646 errmsg = dlerror();
1647 if (errmsg == NULL) errmsg = "addDLL: unknown error";
1648 errmsg_copy = stgMallocBytes(strlen(errmsg)+1, "addDLL");
1649 strcpy(errmsg_copy, errmsg);
1650 errmsg = errmsg_copy;
1651 }
1652 o_so = stgMallocBytes(sizeof(OpenedSO), "addDLL");
1653 o_so->handle = hdl;
1654 o_so->next = openedSOs;
1655 openedSOs = o_so;
1656
1657 RELEASE_LOCK(&dl_mutex);
1658 //--------------- End critical section -------------------
1659
1660 return errmsg;
1661 }
1662
1663 static void *
1664 internal_dlsym(void *hdl, const char *symbol) {
1665 OpenedSO* o_so;
1666 void *v;
1667
1668 // We acquire dl_mutex as concurrent dl* calls may alter dlerror
1669 ACQUIRE_LOCK(&dl_mutex);
1670 dlerror();
1671 for (o_so = openedSOs; o_so != NULL; o_so = o_so->next) {
1672 v = dlsym(o_so->handle, symbol);
1673 if (dlerror() == NULL) {
1674 RELEASE_LOCK(&dl_mutex);
1675 return v;
1676 }
1677 }
1678 v = dlsym(hdl, symbol)
1679 RELEASE_LOCK(&dl_mutex);
1680 return v;
1681 }
1682 # endif
1683
1684 const char *
1685 addDLL( pathchar *dll_name )
1686 {
1687 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1688 /* ------------------- ELF DLL loader ------------------- */
1689
1690 #define NMATCH 5
1691 regmatch_t match[NMATCH];
1692 const char *errmsg;
1693 FILE* fp;
1694 size_t match_length;
1695 #define MAXLINE 1000
1696 char line[MAXLINE];
1697 int result;
1698
1699 initLinker();
1700
1701 IF_DEBUG(linker, debugBelch("addDLL: dll_name = '%s'\n", dll_name));
1702 errmsg = internal_dlopen(dll_name);
1703
1704 if (errmsg == NULL) {
1705 return NULL;
1706 }
1707
1708 // GHC Trac ticket #2615
1709 // On some systems (e.g., Gentoo Linux) dynamic files (e.g. libc.so)
1710 // contain linker scripts rather than ELF-format object code. This
1711 // code handles the situation by recognizing the real object code
1712 // file name given in the linker script.
1713 //
1714 // If an "invalid ELF header" error occurs, it is assumed that the
1715 // .so file contains a linker script instead of ELF object code.
1716 // In this case, the code looks for the GROUP ( ... ) linker
1717 // directive. If one is found, the first file name inside the
1718 // parentheses is treated as the name of a dynamic library and the
1719 // code attempts to dlopen that file. If this is also unsuccessful,
1720 // an error message is returned.
1721
1722 // see if the error message is due to an invalid ELF header
1723 IF_DEBUG(linker, debugBelch("errmsg = '%s'\n", errmsg));
1724 result = regexec(&re_invalid, errmsg, (size_t) NMATCH, match, 0);
1725 IF_DEBUG(linker, debugBelch("result = %i\n", result));
1726 if (result == 0) {
1727 // success -- try to read the named file as a linker script
1728 match_length = (size_t) stg_min((match[1].rm_eo - match[1].rm_so),
1729 MAXLINE-1);
1730 strncpy(line, (errmsg+(match[1].rm_so)),match_length);
1731 line[match_length] = '\0'; // make sure string is null-terminated
1732 IF_DEBUG(linker, debugBelch ("file name = '%s'\n", line));
1733 if ((fp = fopen(line, "r")) == NULL) {
1734 return errmsg; // return original error if open fails
1735 }
1736 // try to find a GROUP or INPUT ( ... ) command
1737 while (fgets(line, MAXLINE, fp) != NULL) {
1738 IF_DEBUG(linker, debugBelch("input line = %s", line));
1739 if (regexec(&re_realso, line, (size_t) NMATCH, match, 0) == 0) {
1740 // success -- try to dlopen the first named file
1741 IF_DEBUG(linker, debugBelch("match%s\n",""));
1742 line[match[2].rm_eo] = '\0';
1743 errmsg = internal_dlopen(line+match[2].rm_so);
1744 break;
1745 }
1746 // if control reaches here, no GROUP or INPUT ( ... ) directive
1747 // was found and the original error message is returned to the
1748 // caller
1749 }
1750 fclose(fp);
1751 }
1752 return errmsg;
1753
1754 # elif defined(OBJFORMAT_PEi386)
1755 /* ------------------- Win32 DLL loader ------------------- */
1756
1757 pathchar* buf;
1758 OpenedDLL* o_dll;
1759 HINSTANCE instance;
1760
1761 initLinker();
1762
1763 /* debugBelch("\naddDLL; dll_name = `%s'\n", dll_name); */
1764
1765 /* See if we've already got it, and ignore if so. */
1766 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
1767 if (0 == pathcmp(o_dll->name, dll_name))
1768 return NULL;
1769 }
1770
1771 /* The file name has no suffix (yet) so that we can try
1772 both foo.dll and foo.drv
1773
1774 The documentation for LoadLibrary says:
1775 If no file name extension is specified in the lpFileName
1776 parameter, the default library extension .dll is
1777 appended. However, the file name string can include a trailing
1778 point character (.) to indicate that the module name has no
1779 extension. */
1780
1781 buf = stgMallocBytes((pathlen(dll_name) + 10) * sizeof(wchar_t), "addDLL");
1782 swprintf(buf, L"%s.DLL", dll_name);
1783 instance = LoadLibraryW(buf);
1784 if (instance == NULL) {
1785 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1786 // KAA: allow loading of drivers (like winspool.drv)
1787 swprintf(buf, L"%s.DRV", dll_name);
1788 instance = LoadLibraryW(buf);
1789 if (instance == NULL) {
1790 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1791 // #1883: allow loading of unix-style libfoo.dll DLLs
1792 swprintf(buf, L"lib%s.DLL", dll_name);
1793 instance = LoadLibraryW(buf);
1794 if (instance == NULL) {
1795 goto error;
1796 }
1797 }
1798 }
1799 stgFree(buf);
1800
1801 /* Add this DLL to the list of DLLs in which to search for symbols. */
1802 o_dll = stgMallocBytes( sizeof(OpenedDLL), "addDLL" );
1803 o_dll->name = pathdup(dll_name);
1804 o_dll->instance = instance;
1805 o_dll->next = opened_dlls;
1806 opened_dlls = o_dll;
1807
1808 return NULL;
1809
1810 error:
1811 stgFree(buf);
1812 sysErrorBelch("%" PATH_FMT, dll_name);
1813
1814 /* LoadLibrary failed; return a ptr to the error msg. */
1815 return "addDLL: could not load DLL";
1816
1817 # else
1818 barf("addDLL: not implemented on this platform");
1819 # endif
1820 }
1821
1822 /* -----------------------------------------------------------------------------
1823 * insert a stable symbol in the hash table
1824 */
1825
1826 void
1827 insertStableSymbol(pathchar* obj_name, char* key, StgPtr p)
1828 {
1829 ghciInsertStrHashTable(obj_name, stablehash, key, getStablePtr(p));
1830 }
1831
1832
1833 /* -----------------------------------------------------------------------------
1834 * insert a symbol in the hash table
1835 */
1836 void
1837 insertSymbol(pathchar* obj_name, char* key, void* data)
1838 {
1839 ghciInsertStrHashTable(obj_name, symhash, key, data);
1840 }
1841
1842 /* -----------------------------------------------------------------------------
1843 * lookup a symbol in the hash table
1844 */
1845 void *
1846 lookupSymbol( char *lbl )
1847 {
1848 void *val;
1849 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s\n", lbl));
1850 initLinker() ;
1851 ASSERT(symhash != NULL);
1852 val = lookupStrHashTable(symhash, lbl);
1853
1854 if (val == NULL) {
1855 IF_DEBUG(linker, debugBelch("lookupSymbol: symbol not found\n"));
1856 # if defined(OBJFORMAT_ELF)
1857 return internal_dlsym(dl_prog_handle, lbl);
1858 # elif defined(OBJFORMAT_MACHO)
1859 # if HAVE_DLFCN_H
1860 /* On OS X 10.3 and later, we use dlsym instead of the old legacy
1861 interface.
1862
1863 HACK: On OS X, all symbols are prefixed with an underscore.
1864 However, dlsym wants us to omit the leading underscore from the
1865 symbol name -- the dlsym routine puts it back on before searching
1866 for the symbol. For now, we simply strip it off here (and ONLY
1867 here).
1868 */
1869 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s with dlsym\n", lbl));
1870 ASSERT(lbl[0] == '_');
1871 return internal_dlsym(dl_prog_handle, lbl + 1);
1872 # else
1873 if (NSIsSymbolNameDefined(lbl)) {
1874 NSSymbol symbol = NSLookupAndBindSymbol(lbl);
1875 return NSAddressOfSymbol(symbol);
1876 } else {
1877 return NULL;
1878 }
1879 # endif /* HAVE_DLFCN_H */
1880 # elif defined(OBJFORMAT_PEi386)
1881 void* sym;
1882
1883 sym = lookupSymbolInDLLs((unsigned char*)lbl);
1884 if (sym != NULL) { return sym; };
1885
1886 // Also try looking up the symbol without the @N suffix. Some
1887 // DLLs have the suffixes on their symbols, some don't.
1888 zapTrailingAtSign ( (unsigned char*)lbl );
1889 sym = lookupSymbolInDLLs((unsigned char*)lbl);
1890 if (sym != NULL) { return sym; };
1891 return NULL;
1892
1893 # else
1894 ASSERT(2+2 == 5);
1895 return NULL;
1896 # endif
1897 } else {
1898 IF_DEBUG(linker, debugBelch("lookupSymbol: value of %s is %p\n", lbl, val));
1899 return val;
1900 }
1901 }
1902
1903 /* -----------------------------------------------------------------------------
1904 * Debugging aid: look in GHCi's object symbol tables for symbols
1905 * within DELTA bytes of the specified address, and show their names.
1906 */
1907 #ifdef DEBUG
1908 void ghci_enquire ( char* addr );
1909
1910 void ghci_enquire ( char* addr )
1911 {
1912 int i;
1913 char* sym;
1914 char* a;
1915 const int DELTA = 64;
1916 ObjectCode* oc;
1917
1918 initLinker();
1919
1920 for (oc = objects; oc; oc = oc->next) {
1921 for (i = 0; i < oc->n_symbols; i++) {
1922 sym = oc->symbols[i];
1923 if (sym == NULL) continue;
1924 a = NULL;
1925 if (a == NULL) {
1926 a = lookupStrHashTable(symhash, sym);
1927 }
1928 if (a == NULL) {
1929 // debugBelch("ghci_enquire: can't find %s\n", sym);
1930 }
1931 else if (addr-DELTA <= a && a <= addr+DELTA) {
1932 debugBelch("%p + %3d == `%s'\n", addr, (int)(a - addr), sym);
1933 }
1934 }
1935 }
1936 }
1937 #endif
1938
1939 #ifdef USE_MMAP
1940 #define ROUND_UP(x,size) ((x + size - 1) & ~(size - 1))
1941
1942 static void *
1943 mmapForLinker (size_t bytes, nat flags, int fd)
1944 {
1945 void *map_addr = NULL;
1946 void *result;
1947 int pagesize, size;
1948 static nat fixed = 0;
1949
1950 IF_DEBUG(linker, debugBelch("mmapForLinker: start\n"));
1951 pagesize = getpagesize();
1952 size = ROUND_UP(bytes, pagesize);
1953
1954 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1955 mmap_again:
1956
1957 if (mmap_32bit_base != 0) {
1958 map_addr = mmap_32bit_base;
1959 }
1960 #endif
1961
1962 IF_DEBUG(linker, debugBelch("mmapForLinker: \tprotection %#0x\n", PROT_EXEC | PROT_READ | PROT_WRITE));
1963 IF_DEBUG(linker, debugBelch("mmapForLinker: \tflags %#0x\n", MAP_PRIVATE | TRY_MAP_32BIT | fixed | flags));
1964 result = mmap(map_addr, size, PROT_EXEC|PROT_READ|PROT_WRITE,
1965 MAP_PRIVATE|TRY_MAP_32BIT|fixed|flags, fd, 0);
1966
1967 if (result == MAP_FAILED) {
1968 sysErrorBelch("mmap %" FMT_Word " bytes at %p",(W_)size,map_addr);
1969 errorBelch("Try specifying an address with +RTS -xm<addr> -RTS");
1970 stg_exit(EXIT_FAILURE);
1971 }
1972
1973 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1974 if (mmap_32bit_base != 0) {
1975 if (result == map_addr) {
1976 mmap_32bit_base = (StgWord8*)map_addr + size;
1977 } else {
1978 if ((W_)result > 0x80000000) {
1979 // oops, we were given memory over 2Gb
1980 #if defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS)
1981 // Some platforms require MAP_FIXED. This is normally
1982 // a bad idea, because MAP_FIXED will overwrite
1983 // existing mappings.
1984 munmap(result,size);
1985 fixed = MAP_FIXED;
1986 goto mmap_again;
1987 #else
1988 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);
1989 #endif
1990 } else {
1991 // hmm, we were given memory somewhere else, but it's
1992 // still under 2Gb so we can use it. Next time, ask
1993 // for memory right after the place we just got some
1994 mmap_32bit_base = (StgWord8*)result + size;
1995 }
1996 }
1997 } else {
1998 if ((W_)result > 0x80000000) {
1999 // oops, we were given memory over 2Gb
2000 // ... try allocating memory somewhere else?;
2001 debugTrace(DEBUG_linker,"MAP_32BIT didn't work; gave us %lu bytes at 0x%p", bytes, result);
2002 munmap(result, size);
2003
2004 // Set a base address and try again... (guess: 1Gb)
2005 mmap_32bit_base = (void*)0x40000000;
2006 goto mmap_again;
2007 }
2008 }
2009 #endif
2010
2011 IF_DEBUG(linker, debugBelch("mmapForLinker: mapped %" FMT_Word " bytes starting at %p\n", (W_)size, result));
2012 IF_DEBUG(linker, debugBelch("mmapForLinker: done\n"));
2013 return result;
2014 }
2015 #endif // USE_MMAP
2016
2017 static ObjectCode*
2018 mkOc( pathchar *path, char *image, int imageSize,
2019 char *archiveMemberName
2020 #ifndef USE_MMAP
2021 #ifdef darwin_HOST_OS
2022 , int misalignment
2023 #endif
2024 #endif
2025 ) {
2026 ObjectCode* oc;
2027
2028 IF_DEBUG(linker, debugBelch("mkOc: start\n"));
2029 oc = stgMallocBytes(sizeof(ObjectCode), "loadArchive(oc)");
2030
2031 # if defined(OBJFORMAT_ELF)
2032 oc->formatName = "ELF";
2033 # elif defined(OBJFORMAT_PEi386)
2034 oc->formatName = "PEi386";
2035 # elif defined(OBJFORMAT_MACHO)
2036 oc->formatName = "Mach-O";
2037 # else
2038 stgFree(oc);
2039 barf("loadObj: not implemented on this platform");
2040 # endif
2041
2042 oc->image = image;
2043 oc->fileName = pathdup(path);
2044
2045 if (archiveMemberName) {
2046 oc->archiveMemberName = stgMallocBytes( strlen(archiveMemberName)+1, "loadObj" );
2047 strcpy(oc->archiveMemberName, archiveMemberName);
2048 }
2049 else {
2050 oc->archiveMemberName = NULL;
2051 }
2052
2053 oc->fileSize = imageSize;
2054 oc->symbols = NULL;
2055 oc->sections = NULL;
2056 oc->proddables = NULL;
2057
2058 #ifndef USE_MMAP
2059 #ifdef darwin_HOST_OS
2060 oc->misalignment = misalignment;
2061 #endif
2062 #endif
2063
2064 /* chain it onto the list of objects */
2065 oc->next = objects;
2066 objects = oc;
2067
2068 IF_DEBUG(linker, debugBelch("mkOc: done\n"));
2069 return oc;
2070 }
2071
2072 HsInt
2073 loadArchive( pathchar *path )
2074 {
2075 ObjectCode* oc;
2076 char *image;
2077 int memberSize;
2078 FILE *f;
2079 int n;
2080 size_t thisFileNameSize;
2081 char *fileName;
2082 size_t fileNameSize;
2083 int isObject, isGnuIndex;
2084 char tmp[20];
2085 char *gnuFileIndex;
2086 int gnuFileIndexSize;
2087 #if defined(darwin_HOST_OS)
2088 int i;
2089 uint32_t nfat_arch, nfat_offset, cputype, cpusubtype;
2090 #if defined(i386_HOST_ARCH)
2091 const uint32_t mycputype = CPU_TYPE_X86;
2092 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_ALL;
2093 #elif defined(x86_64_HOST_ARCH)
2094 const uint32_t mycputype = CPU_TYPE_X86_64;
2095 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_64_ALL;
2096 #elif defined(powerpc_HOST_ARCH)
2097 const uint32_t mycputype = CPU_TYPE_POWERPC;
2098 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2099 #elif defined(powerpc64_HOST_ARCH)
2100 const uint32_t mycputype = CPU_TYPE_POWERPC64;
2101 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2102 #else
2103 #error Unknown Darwin architecture
2104 #endif
2105 #if !defined(USE_MMAP)
2106 int misalignment;
2107 #endif
2108 #endif
2109
2110 IF_DEBUG(linker, debugBelch("loadArchive: start\n"));
2111 IF_DEBUG(linker, debugBelch("loadArchive: Loading archive `%" PATH_FMT" '\n", path));
2112
2113 if (dynamicByDefault) {
2114 barf("loadArchive called, but using dynlibs by default (%s)", path);
2115 }
2116
2117 gnuFileIndex = NULL;
2118 gnuFileIndexSize = 0;
2119
2120 fileNameSize = 32;
2121 fileName = stgMallocBytes(fileNameSize, "loadArchive(fileName)");
2122
2123 f = pathopen(path, WSTR("rb"));
2124 if (!f)
2125 barf("loadObj: can't read `%s'", path);
2126
2127 /* Check if this is an archive by looking for the magic "!<arch>\n"
2128 * string. Usually, if this fails, we barf and quit. On Darwin however,
2129 * we may have a fat archive, which contains archives for more than
2130 * one architecture. Fat archives start with the magic number 0xcafebabe,
2131 * always stored big endian. If we find a fat_header, we scan through
2132 * the fat_arch structs, searching through for one for our host
2133 * architecture. If a matching struct is found, we read the offset
2134 * of our archive data (nfat_offset) and seek forward nfat_offset bytes
2135 * from the start of the file.
2136 *
2137 * A subtlety is that all of the members of the fat_header and fat_arch
2138 * structs are stored big endian, so we need to call byte order
2139 * conversion functions.
2140 *
2141 * If we find the appropriate architecture in a fat archive, we gobble
2142 * its magic "!<arch>\n" string and continue processing just as if
2143 * we had a single architecture archive.
2144 */
2145
2146 n = fread ( tmp, 1, 8, f );
2147 if (n != 8)
2148 barf("loadArchive: Failed reading header from `%s'", path);
2149 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2150
2151 #if defined(darwin_HOST_OS)
2152 /* Not a standard archive, look for a fat archive magic number: */
2153 if (ntohl(*(uint32_t *)tmp) == FAT_MAGIC) {
2154 nfat_arch = ntohl(*(uint32_t *)(tmp + 4));
2155 IF_DEBUG(linker, debugBelch("loadArchive: found a fat archive containing %d architectures\n", nfat_arch));
2156 nfat_offset = 0;
2157
2158 for (i = 0; i < (int)nfat_arch; i++) {
2159 /* search for the right arch */
2160 n = fread( tmp, 1, 20, f );
2161 if (n != 8)
2162 barf("loadArchive: Failed reading arch from `%s'", path);
2163 cputype = ntohl(*(uint32_t *)tmp);
2164 cpusubtype = ntohl(*(uint32_t *)(tmp + 4));
2165
2166 if (cputype == mycputype && cpusubtype == mycpusubtype) {
2167 IF_DEBUG(linker, debugBelch("loadArchive: found my archive in a fat archive\n"));
2168 nfat_offset = ntohl(*(uint32_t *)(tmp + 8));
2169 break;
2170 }
2171 }
2172
2173 if (nfat_offset == 0) {
2174 barf ("loadArchive: searched %d architectures, but no host arch found", (int)nfat_arch);
2175 }
2176 else {
2177 n = fseek( f, nfat_offset, SEEK_SET );
2178 if (n != 0)
2179 barf("loadArchive: Failed to seek to arch in `%s'", path);
2180 n = fread ( tmp, 1, 8, f );
2181 if (n != 8)
2182 barf("loadArchive: Failed reading header from `%s'", path);
2183 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2184 barf("loadArchive: couldn't find archive in `%s' at offset %d", path, nfat_offset);
2185 }
2186 }
2187 }
2188 else {
2189 barf("loadArchive: Neither an archive, nor a fat archive: `%s'", path);
2190 }
2191
2192 #else
2193 barf("loadArchive: Not an archive: `%s'", path);
2194 #endif
2195 }
2196
2197 IF_DEBUG(linker, debugBelch("loadArchive: loading archive contents\n"));
2198
2199 while(1) {
2200 n = fread ( fileName, 1, 16, f );
2201 if (n != 16) {
2202 if (feof(f)) {
2203 IF_DEBUG(linker, debugBelch("loadArchive: EOF while reading from '%" PATH_FMT "'\n", path));
2204 break;
2205 }
2206 else {
2207 barf("loadArchive: Failed reading file name from `%s'", path);
2208 }
2209 }
2210
2211 #if defined(darwin_HOST_OS)
2212 if (strncmp(fileName, "!<arch>\n", 8) == 0) {
2213 IF_DEBUG(linker, debugBelch("loadArchive: found the start of another archive, breaking\n"));
2214 break;
2215 }
2216 #endif
2217
2218 n = fread ( tmp, 1, 12, f );
2219 if (n != 12)
2220 barf("loadArchive: Failed reading mod time from `%s'", path);
2221 n = fread ( tmp, 1, 6, f );
2222 if (n != 6)
2223 barf("loadArchive: Failed reading owner from `%s'", path);
2224 n = fread ( tmp, 1, 6, f );
2225 if (n != 6)
2226 barf("loadArchive: Failed reading group from `%s'", path);
2227 n = fread ( tmp, 1, 8, f );
2228 if (n != 8)
2229 barf("loadArchive: Failed reading mode from `%s'", path);
2230 n = fread ( tmp, 1, 10, f );
2231 if (n != 10)
2232 barf("loadArchive: Failed reading size from `%s'", path);
2233 tmp[10] = '\0';
2234 for (n = 0; isdigit(tmp[n]); n++);
2235 tmp[n] = '\0';
2236 memberSize = atoi(tmp);
2237
2238 IF_DEBUG(linker, debugBelch("loadArchive: size of this archive member is %d\n", memberSize));
2239 n = fread ( tmp, 1, 2, f );
2240 if (n != 2)
2241 barf("loadArchive: Failed reading magic from `%s'", path);
2242 if (strncmp(tmp, "\x60\x0A", 2) != 0)
2243 barf("loadArchive: Failed reading magic from `%s' at %ld. Got %c%c",
2244 path, ftell(f), tmp[0], tmp[1]);
2245
2246 isGnuIndex = 0;
2247 /* Check for BSD-variant large filenames */
2248 if (0 == strncmp(fileName, "#1/", 3)) {
2249 fileName[16] = '\0';
2250 if (isdigit(fileName[3])) {
2251 for (n = 4; isdigit(fileName[n]); n++);
2252 fileName[n] = '\0';
2253 thisFileNameSize = atoi(fileName + 3);
2254 memberSize -= thisFileNameSize;
2255 if (thisFileNameSize >= fileNameSize) {
2256 /* Double it to avoid potentially continually
2257 increasing it by 1 */
2258 fileNameSize = thisFileNameSize * 2;
2259 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2260 }
2261 n = fread ( fileName, 1, thisFileNameSize, f );
2262 if (n != (int)thisFileNameSize) {
2263 barf("loadArchive: Failed reading filename from `%s'",
2264 path);
2265 }
2266 fileName[thisFileNameSize] = 0;
2267
2268 /* On OS X at least, thisFileNameSize is the size of the
2269 fileName field, not the length of the fileName
2270 itself. */
2271 thisFileNameSize = strlen(fileName);
2272 }
2273 else {
2274 barf("loadArchive: BSD-variant filename size not found while reading filename from `%s'", path);
2275 }
2276 }
2277 /* Check for GNU file index file */
2278 else if (0 == strncmp(fileName, "//", 2)) {
2279 fileName[0] = '\0';
2280 thisFileNameSize = 0;
2281 isGnuIndex = 1;
2282 }
2283 /* Check for a file in the GNU file index */
2284 else if (fileName[0] == '/') {
2285 if (isdigit(fileName[1])) {
2286 int i;
2287
2288 for (n = 2; isdigit(fileName[n]); n++);
2289 fileName[n] = '\0';
2290 n = atoi(fileName + 1);
2291
2292 if (gnuFileIndex == NULL) {
2293 barf("loadArchive: GNU-variant filename without an index while reading from `%s'", path);
2294 }
2295 if (n < 0 || n > gnuFileIndexSize) {
2296 barf("loadArchive: GNU-variant filename offset %d out of range [0..%d] while reading filename from `%s'", n, gnuFileIndexSize, path);
2297 }
2298 if (n != 0 && gnuFileIndex[n - 1] != '\n') {
2299 barf("loadArchive: GNU-variant filename offset %d invalid (range [0..%d]) while reading filename from `%s'", n, gnuFileIndexSize, path);
2300 }
2301 for (i = n; gnuFileIndex[i] != '/'; i++);
2302 thisFileNameSize = i - n;
2303 if (thisFileNameSize >= fileNameSize) {
2304 /* Double it to avoid potentially continually
2305 increasing it by 1 */
2306 fileNameSize = thisFileNameSize * 2;
2307 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2308 }
2309 memcpy(fileName, gnuFileIndex + n, thisFileNameSize);
2310 fileName[thisFileNameSize] = '\0';
2311 }
2312 else if (fileName[1] == ' ') {
2313 fileName[0] = '\0';
2314 thisFileNameSize = 0;
2315 }
2316 else {
2317 barf("loadArchive: GNU-variant filename offset not found while reading filename from `%s'", path);
2318 }
2319 }
2320 /* Finally, the case where the filename field actually contains
2321 the filename */
2322 else {
2323 /* GNU ar terminates filenames with a '/', this allowing
2324 spaces in filenames. So first look to see if there is a
2325 terminating '/'. */
2326 for (thisFileNameSize = 0;
2327 thisFileNameSize < 16;
2328 thisFileNameSize++) {
2329 if (fileName[thisFileNameSize] == '/') {
2330 fileName[thisFileNameSize] = '\0';
2331 break;
2332 }
2333 }
2334 /* If we didn't find a '/', then a space teminates the
2335 filename. Note that if we don't find one, then
2336 thisFileNameSize ends up as 16, and we already have the
2337 '\0' at the end. */
2338 if (thisFileNameSize == 16) {
2339 for (thisFileNameSize = 0;
2340 thisFileNameSize < 16;
2341 thisFileNameSize++) {
2342 if (fileName[thisFileNameSize] == ' ') {
2343 fileName[thisFileNameSize] = '\0';
2344 break;
2345 }
2346 }
2347 }
2348 }
2349
2350 IF_DEBUG(linker,
2351 debugBelch("loadArchive: Found member file `%s'\n", fileName));
2352
2353 isObject = thisFileNameSize >= 2
2354 && fileName[thisFileNameSize - 2] == '.'
2355 && fileName[thisFileNameSize - 1] == 'o';
2356
2357 IF_DEBUG(linker, debugBelch("loadArchive: \tthisFileNameSize = %d\n", (int)thisFileNameSize));
2358 IF_DEBUG(linker, debugBelch("loadArchive: \tisObject = %d\n", isObject));
2359
2360 if (isObject) {
2361 char *archiveMemberName;
2362
2363 IF_DEBUG(linker, debugBelch("loadArchive: Member is an object file...loading...\n"));
2364
2365 /* We can't mmap from the archive directly, as object
2366 files need to be 8-byte aligned but files in .ar
2367 archives are 2-byte aligned. When possible we use mmap
2368 to get some anonymous memory, as on 64-bit platforms if
2369 we use malloc then we can be given memory above 2^32.
2370 In the mmap case we're probably wasting lots of space;
2371 we could do better. */
2372 #if defined(USE_MMAP)
2373 image = mmapForLinker(memberSize, MAP_ANONYMOUS, -1);
2374 #elif defined(mingw32_HOST_OS)
2375 // TODO: We would like to use allocateExec here, but allocateExec
2376 // cannot currently allocate blocks large enough.
2377 {
2378 int offset;
2379 #if defined(x86_64_HOST_ARCH)
2380 /* We get back 8-byte aligned memory (is that guaranteed?), but
2381 the offsets to the sections within the file are all 4 mod 8
2382 (is that guaranteed?). We therefore need to offset the image
2383 by 4, so that all the pointers are 8-byte aligned, so that
2384 pointer tagging works. */
2385 offset = 4;
2386 #else
2387 offset = 0;
2388 #endif
2389 image = VirtualAlloc(NULL, memberSize + offset,
2390 MEM_RESERVE | MEM_COMMIT,
2391 PAGE_EXECUTE_READWRITE);
2392 image += offset;
2393 }
2394 #elif defined(darwin_HOST_OS)
2395 /* See loadObj() */
2396 misalignment = machoGetMisalignment(f);
2397 image = stgMallocBytes(memberSize + misalignment, "loadArchive(image)");
2398 image += misalignment;
2399 #else
2400 image = stgMallocBytes(memberSize, "loadArchive(image)");
2401 #endif
2402 n = fread ( image, 1, memberSize, f );
2403 if (n != memberSize) {
2404 barf("loadArchive: error whilst reading `%s'", path);
2405 }
2406
2407 archiveMemberName = stgMallocBytes(pathlen(path) + thisFileNameSize + 3,
2408 "loadArchive(file)");
2409 sprintf(archiveMemberName, "%" PATH_FMT "(%.*s)",
2410 path, (int)thisFileNameSize, fileName);
2411
2412 oc = mkOc(path, image, memberSize, archiveMemberName
2413 #ifndef USE_MMAP
2414 #ifdef darwin_HOST_OS
2415 , misalignment
2416 #endif
2417 #endif
2418 );
2419
2420 stgFree(archiveMemberName);
2421
2422 if (0 == loadOc(oc)) {
2423 stgFree(fileName);
2424 return 0;
2425 }
2426 }
2427 else if (isGnuIndex) {
2428 if (gnuFileIndex != NULL) {
2429 barf("loadArchive: GNU-variant index found, but already have an index, while reading filename from `%s'", path);
2430 }
2431 IF_DEBUG(linker, debugBelch("loadArchive: Found GNU-variant file index\n"));
2432 #ifdef USE_MMAP
2433 gnuFileIndex = mmapForLinker(memberSize + 1, MAP_ANONYMOUS, -1);
2434 #else
2435 gnuFileIndex = stgMallocBytes(memberSize + 1, "loadArchive(image)");
2436 #endif
2437 n = fread ( gnuFileIndex, 1, memberSize, f );
2438 if (n != memberSize) {
2439 barf("loadArchive: error whilst reading `%s'", path);
2440 }
2441 gnuFileIndex[memberSize] = '/';
2442 gnuFileIndexSize = memberSize;
2443 }
2444 else {
2445 IF_DEBUG(linker, debugBelch("loadArchive: '%s' does not appear to be an object file\n", fileName));
2446 n = fseek(f, memberSize, SEEK_CUR);
2447 if (n != 0)
2448 barf("loadArchive: error whilst seeking by %d in `%s'",
2449 memberSize, path);
2450 }
2451
2452 /* .ar files are 2-byte aligned */
2453 if (memberSize % 2) {
2454 IF_DEBUG(linker, debugBelch("loadArchive: trying to read one pad byte\n"));
2455 n = fread ( tmp, 1, 1, f );
2456 if (n != 1) {
2457 if (feof(f)) {
2458 IF_DEBUG(linker, debugBelch("loadArchive: found EOF while reading one pad byte\n"));
2459 break;
2460 }
2461 else {
2462 barf("loadArchive: Failed reading padding from `%s'", path);
2463 }
2464 }
2465 IF_DEBUG(linker, debugBelch("loadArchive: successfully read one pad byte\n"));
2466 }
2467 IF_DEBUG(linker, debugBelch("loadArchive: reached end of archive loading while loop\n"));
2468 }
2469
2470 fclose(f);
2471
2472 stgFree(fileName);
2473 if (gnuFileIndex != NULL) {
2474 #ifdef USE_MMAP
2475 munmap(gnuFileIndex, gnuFileIndexSize + 1);
2476 #else
2477 stgFree(gnuFileIndex);
2478 #endif
2479 }
2480
2481 IF_DEBUG(linker, debugBelch("loadArchive: done\n"));
2482 return 1;
2483 }
2484
2485 /* -----------------------------------------------------------------------------
2486 * Load an obj (populate the global symbol table, but don't resolve yet)
2487 *
2488 * Returns: 1 if ok, 0 on error.
2489 */
2490 HsInt
2491 loadObj( pathchar *path )
2492 {
2493 ObjectCode* oc;
2494 char *image;
2495 int fileSize;
2496 struct_stat st;
2497 int r;
2498 #ifdef USE_MMAP
2499 int fd;
2500 #else
2501 FILE *f;
2502 # if defined(darwin_HOST_OS)
2503 int misalignment;
2504 # endif
2505 #endif
2506 IF_DEBUG(linker, debugBelch("loadObj %" PATH_FMT "\n", path));
2507
2508 if (dynamicByDefault) {
2509 barf("loadObj called, but using dynlibs by default (%s)", path);
2510 }
2511
2512 initLinker();
2513
2514 /* debugBelch("loadObj %s\n", path ); */
2515
2516 /* Check that we haven't already loaded this object.
2517 Ignore requests to load multiple times */
2518 {
2519 ObjectCode *o;
2520 int is_dup = 0;
2521 for (o = objects; o; o = o->next) {
2522 if (0 == pathcmp(o->fileName, path)) {
2523 is_dup = 1;
2524 break; /* don't need to search further */
2525 }
2526 }
2527 if (is_dup) {
2528 IF_DEBUG(linker, debugBelch(
2529 "GHCi runtime linker: warning: looks like you're trying to load the\n"
2530 "same object file twice:\n"
2531 " %" PATH_FMT "\n"
2532 "GHCi will ignore this, but be warned.\n"
2533 , path));
2534 return 1; /* success */
2535 }
2536 }
2537
2538 r = pathstat(path, &st);
2539 if (r == -1) {
2540 IF_DEBUG(linker, debugBelch("File doesn't exist\n"));
2541 return 0;
2542 }
2543
2544 fileSize = st.st_size;
2545
2546 #ifdef USE_MMAP
2547 /* On many architectures malloc'd memory isn't executable, so we need to use mmap. */
2548
2549 #if defined(openbsd_HOST_OS)
2550 fd = open(path, O_RDONLY, S_IRUSR);
2551 #else
2552 fd = open(path, O_RDONLY);
2553 #endif
2554 if (fd == -1)
2555 barf("loadObj: can't open `%s'", path);
2556
2557 image = mmapForLinker(fileSize, 0, fd);
2558
2559 close(fd);
2560
2561 #else /* !USE_MMAP */
2562 /* load the image into memory */
2563 f = pathopen(path, WSTR("rb"));
2564 if (!f)
2565 barf("loadObj: can't read `%" PATH_FMT "'", path);
2566
2567 # if defined(mingw32_HOST_OS)
2568 // TODO: We would like to use allocateExec here, but allocateExec
2569 // cannot currently allocate blocks large enough.
2570 {
2571 int offset;
2572 #if defined(x86_64_HOST_ARCH)
2573 /* We get back 8-byte aligned memory (is that guaranteed?), but
2574 the offsets to the sections within the file are all 4 mod 8
2575 (is that guaranteed?). We therefore need to offset the image
2576 by 4, so that all the pointers are 8-byte aligned, so that
2577 pointer tagging works. */
2578 offset = 4;
2579 #else
2580 offset = 0;
2581 #endif
2582 image = VirtualAlloc(NULL, fileSize + offset, MEM_RESERVE | MEM_COMMIT,
2583 PAGE_EXECUTE_READWRITE);
2584 image += offset;
2585 }
2586 # elif defined(darwin_HOST_OS)
2587 // In a Mach-O .o file, all sections can and will be misaligned
2588 // if the total size of the headers is not a multiple of the
2589 // desired alignment. This is fine for .o files that only serve
2590 // as input for the static linker, but it's not fine for us,
2591 // as SSE (used by gcc for floating point) and Altivec require
2592 // 16-byte alignment.
2593 // We calculate the correct alignment from the header before
2594 // reading the file, and then we misalign image on purpose so
2595 // that the actual sections end up aligned again.
2596 misalignment = machoGetMisalignment(f);
2597 image = stgMallocBytes(fileSize + misalignment, "loadObj(image)");
2598 image += misalignment;
2599 # else
2600 image = stgMallocBytes(fileSize, "loadObj(image)");
2601 # endif
2602
2603 {
2604 int n;
2605 n = fread ( image, 1, fileSize, f );
2606 if (n != fileSize)
2607 barf("loadObj: error whilst reading `%s'", path);
2608 }
2609 fclose(f);
2610 #endif /* USE_MMAP */
2611
2612 oc = mkOc(path, image, fileSize, NULL
2613 #ifndef USE_MMAP
2614 #ifdef darwin_HOST_OS
2615 , misalignment
2616 #endif
2617 #endif
2618 );
2619
2620 return loadOc(oc);
2621 }
2622
2623 static HsInt
2624 loadOc( ObjectCode* oc ) {
2625 int r;
2626
2627 IF_DEBUG(linker, debugBelch("loadOc: start\n"));
2628
2629 # if defined(OBJFORMAT_MACHO) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH))
2630 r = ocAllocateSymbolExtras_MachO ( oc );
2631 if (!r) {
2632 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_MachO failed\n"));
2633 return r;
2634 }
2635 # elif defined(OBJFORMAT_ELF) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH))
2636 r = ocAllocateSymbolExtras_ELF ( oc );
2637 if (!r) {
2638 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_ELF failed\n"));
2639 return r;
2640 }
2641 #endif
2642
2643 /* verify the in-memory image */
2644 # if defined(OBJFORMAT_ELF)
2645 r = ocVerifyImage_ELF ( oc );
2646 # elif defined(OBJFORMAT_PEi386)
2647 r = ocVerifyImage_PEi386 ( oc );
2648 # elif defined(OBJFORMAT_MACHO)
2649 r = ocVerifyImage_MachO ( oc );
2650 # else
2651 barf("loadObj: no verify method");
2652 # endif
2653 if (!r) {
2654 IF_DEBUG(linker, debugBelch("loadOc: ocVerifyImage_* failed\n"));
2655 return r;
2656 }
2657
2658 /* build the symbol list for this image */
2659 # if defined(OBJFORMAT_ELF)
2660 r = ocGetNames_ELF ( oc );
2661 # elif defined(OBJFORMAT_PEi386)
2662 r = ocGetNames_PEi386 ( oc );
2663 # elif defined(OBJFORMAT_MACHO)
2664 r = ocGetNames_MachO ( oc );
2665 # else
2666 barf("loadObj: no getNames method");
2667 # endif
2668 if (!r) {
2669 IF_DEBUG(linker, debugBelch("loadOc: ocGetNames_* failed\n"));
2670 return r;
2671 }
2672
2673 /* loaded, but not resolved yet */
2674 oc->status = OBJECT_LOADED;
2675 IF_DEBUG(linker, debugBelch("loadOc: done.\n"));
2676
2677 return 1;
2678 }
2679
2680 /* -----------------------------------------------------------------------------
2681 * resolve all the currently unlinked objects in memory
2682 *
2683 * Returns: 1 if ok, 0 on error.
2684 */
2685 HsInt
2686 resolveObjs( void )
2687 {
2688 ObjectCode *oc;
2689 int r;
2690
2691 IF_DEBUG(linker, debugBelch("resolveObjs: start\n"));
2692 initLinker();
2693
2694 for (oc = objects; oc; oc = oc->next) {
2695 if (oc->status != OBJECT_RESOLVED) {
2696 # if defined(OBJFORMAT_ELF)
2697 r = ocResolve_ELF ( oc );
2698 # elif defined(OBJFORMAT_PEi386)
2699 r = ocResolve_PEi386 ( oc );
2700 # elif defined(OBJFORMAT_MACHO)
2701 r = ocResolve_MachO ( oc );
2702 # else
2703 barf("resolveObjs: not implemented on this platform");
2704 # endif
2705 if (!r) { return r; }
2706 oc->status = OBJECT_RESOLVED;
2707 }
2708 }
2709 IF_DEBUG(linker, debugBelch("resolveObjs: done\n"));
2710 return 1;
2711 }
2712
2713 /* -----------------------------------------------------------------------------
2714 * delete an object from the pool
2715 */
2716 HsInt
2717 unloadObj( pathchar *path )
2718 {
2719 ObjectCode *oc, *prev;
2720 HsBool unloadedAnyObj = HS_BOOL_FALSE;
2721
2722 ASSERT(symhash != NULL);
2723 ASSERT(objects != NULL);
2724
2725 initLinker();
2726
2727 prev = NULL;
2728 for (oc = objects; oc; prev = oc, oc = oc->next) {
2729 if (!pathcmp(oc->fileName,path)) {
2730
2731 /* Remove all the mappings for the symbols within this
2732 * object..
2733 */
2734 {
2735 int i;
2736 for (i = 0; i < oc->n_symbols; i++) {
2737 if (oc->symbols[i] != NULL) {
2738 removeStrHashTable(symhash, oc->symbols[i], NULL);
2739 }
2740 }
2741 }
2742
2743 if (prev == NULL) {
2744 objects = oc->next;
2745 } else {
2746 prev->next = oc->next;
2747 }
2748
2749 // We're going to leave this in place, in case there are
2750 // any pointers from the heap into it:
2751 // #ifdef mingw32_HOST_OS
2752 // If uncommenting, note that currently oc->image is
2753 // not the right address to free on Win64, as we added
2754 // 4 bytes of padding at the start
2755 // VirtualFree(oc->image);
2756 // #else
2757 // stgFree(oc->image);
2758 // #endif
2759 stgFree(oc->fileName);
2760 stgFree(oc->archiveMemberName);
2761 stgFree(oc->symbols);
2762 stgFree(oc->sections);
2763 stgFree(oc);
2764
2765 /* This could be a member of an archive so continue
2766 * unloading other members. */
2767 unloadedAnyObj = HS_BOOL_TRUE;
2768 }
2769 }
2770
2771 if (unloadedAnyObj) {
2772 return 1;
2773 }
2774 else {
2775 errorBelch("unloadObj: can't find `%" PATH_FMT "' to unload", path);
2776 return 0;
2777 }
2778 }
2779
2780 /* -----------------------------------------------------------------------------
2781 * Sanity checking. For each ObjectCode, maintain a list of address ranges
2782 * which may be prodded during relocation, and abort if we try and write
2783 * outside any of these.
2784 */
2785 static void
2786 addProddableBlock ( ObjectCode* oc, void* start, int size )
2787 {
2788 ProddableBlock* pb
2789 = stgMallocBytes(sizeof(ProddableBlock), "addProddableBlock");
2790
2791 IF_DEBUG(linker, debugBelch("addProddableBlock: %p %p %d\n", oc, start, size));
2792 ASSERT(size > 0);
2793 pb->start = start;
2794 pb->size = size;
2795 pb->next = oc->proddables;
2796 oc->proddables = pb;
2797 }
2798
2799 static void
2800 checkProddableBlock (ObjectCode *oc, void *addr, size_t size )
2801 {
2802 ProddableBlock* pb;
2803
2804 for (pb = oc->proddables; pb != NULL; pb = pb->next) {
2805 char* s = (char*)(pb->start);
2806 char* e = s + pb->size;
2807 char* a = (char*)addr;
2808 if (a >= s && (a+size) <= e) return;
2809 }
2810 barf("checkProddableBlock: invalid fixup in runtime linker: %p", addr);
2811 }
2812
2813 /* -----------------------------------------------------------------------------
2814 * Section management.
2815 */
2816 static void
2817 addSection ( ObjectCode* oc, SectionKind kind,
2818 void* start, void* end )
2819 {
2820 Section* s = stgMallocBytes(sizeof(Section), "addSection");
2821 s->start = start;
2822 s->end = end;
2823 s->kind = kind;
2824 s->next = oc->sections;
2825 oc->sections = s;
2826
2827 IF_DEBUG(linker, debugBelch("addSection: %p-%p (size %lld), kind %d\n",
2828 start, ((char*)end)-1, ((long long)(size_t)end) - ((long long)(size_t)start) + 1, kind ));
2829 }
2830
2831
2832 /* --------------------------------------------------------------------------
2833 * Symbol Extras.
2834 * This is about allocating a small chunk of memory for every symbol in the
2835 * object file. We make sure that the SymboLExtras are always "in range" of
2836 * limited-range PC-relative instructions on various platforms by allocating
2837 * them right next to the object code itself.
2838 */
2839
2840 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2841 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2842
2843 /*
2844 ocAllocateSymbolExtras
2845
2846 Allocate additional space at the end of the object file image to make room
2847 for jump islands (powerpc, x86_64, arm) and GOT entries (x86_64).
2848
2849 PowerPC relative branch instructions have a 24 bit displacement field.
2850 As PPC code is always 4-byte-aligned, this yields a +-32MB range.
2851 If a particular imported symbol is outside this range, we have to redirect
2852 the jump to a short piece of new code that just loads the 32bit absolute
2853 address and jumps there.
2854 On x86_64, PC-relative jumps and PC-relative accesses to the GOT are limited
2855 to 32 bits (+-2GB).
2856
2857 This function just allocates space for one SymbolExtra for every
2858 undefined symbol in the object file. The code for the jump islands is
2859 filled in by makeSymbolExtra below.
2860 */
2861
2862 static int ocAllocateSymbolExtras( ObjectCode* oc, int count, int first )
2863 {
2864 #ifdef USE_MMAP
2865 int pagesize, n, m;
2866 #endif
2867 int aligned;
2868 #ifndef USE_MMAP
2869 int misalignment = 0;
2870 #ifdef darwin_HOST_OS
2871 misalignment = oc->misalignment;
2872 #endif
2873 #endif
2874
2875 if( count > 0 )
2876 {
2877 // round up to the nearest 4
2878 aligned = (oc->fileSize + 3) & ~3;
2879
2880 #ifdef USE_MMAP
2881 pagesize = getpagesize();
2882 n = ROUND_UP( oc->fileSize, pagesize );
2883 m = ROUND_UP( aligned + sizeof (SymbolExtra) * count, pagesize );
2884
2885 /* we try to use spare space at the end of the last page of the
2886 * image for the jump islands, but if there isn't enough space
2887 * then we have to map some (anonymously, remembering MAP_32BIT).
2888 */
2889 if( m > n ) // we need to allocate more pages
2890 {
2891 if (USE_CONTIGUOUS_MMAP)
2892 {
2893 /* Keep image and symbol_extras contiguous */
2894 void *new = mmapForLinker(n + (sizeof(SymbolExtra) * count),
2895 MAP_ANONYMOUS, -1);
2896 if (new)
2897 {
2898 memcpy(new, oc->image, oc->fileSize);
2899 munmap(oc->image, n);
2900 oc->image = new;
2901 oc->symbol_extras = (SymbolExtra *) (oc->image + n);
2902 }
2903 else
2904 oc->symbol_extras = NULL;
2905 }
2906 else
2907 {
2908 oc->symbol_extras = mmapForLinker(sizeof(SymbolExtra) * count,
2909 MAP_ANONYMOUS, -1);
2910 }
2911 }
2912 else
2913 {
2914 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
2915 }
2916 #else
2917 oc->image -= misalignment;
2918 oc->image = stgReallocBytes( oc->image,
2919 misalignment +
2920 aligned + sizeof (SymbolExtra) * count,
2921 "ocAllocateSymbolExtras" );
2922 oc->image += misalignment;
2923
2924 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
2925 #endif /* USE_MMAP */
2926
2927 memset( oc->symbol_extras, 0, sizeof (SymbolExtra) * count );
2928 }
2929 else
2930 oc->symbol_extras = NULL;
2931
2932 oc->first_symbol_extra = first;
2933 oc->n_symbol_extras = count;
2934
2935 return 1;
2936 }
2937
2938 #endif
2939 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2940
2941 #if defined(arm_HOST_ARCH)
2942
2943 static void
2944 ocFlushInstructionCache( ObjectCode *oc )
2945 {
2946 // Object code
2947 __clear_cache(oc->image, oc->image + oc->fileSize);
2948 // Jump islands
2949 __clear_cache(oc->symbol_extras, &oc->symbol_extras[oc->n_symbol_extras]);
2950 }
2951
2952 #endif
2953
2954 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
2955 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2956
2957 static SymbolExtra* makeSymbolExtra( ObjectCode* oc,
2958 unsigned long symbolNumber,
2959 unsigned long target )
2960 {
2961 SymbolExtra *extra;
2962
2963 ASSERT( symbolNumber >= oc->first_symbol_extra
2964 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
2965
2966 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
2967
2968 #ifdef powerpc_HOST_ARCH
2969 // lis r12, hi16(target)
2970 extra->jumpIsland.lis_r12 = 0x3d80;
2971 extra->jumpIsland.hi_addr = target >> 16;
2972
2973 // ori r12, r12, lo16(target)
2974 extra->jumpIsland.ori_r12_r12 = 0x618c;
2975 extra->jumpIsland.lo_addr = target & 0xffff;
2976
2977 // mtctr r12
2978 extra->jumpIsland.mtctr_r12 = 0x7d8903a6;
2979
2980 // bctr
2981 extra->jumpIsland.bctr = 0x4e800420;
2982 #endif
2983 #ifdef x86_64_HOST_ARCH
2984 // jmp *-14(%rip)
2985 static uint8_t jmp[] = { 0xFF, 0x25, 0xF2, 0xFF, 0xFF, 0xFF };
2986 extra->addr = target;
2987 memcpy(extra->jumpIsland, jmp, 6);
2988 #endif
2989
2990 return extra;
2991 }
2992
2993 #endif
2994 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
2995
2996 #ifdef arm_HOST_ARCH
2997 static SymbolExtra* makeArmSymbolExtra( ObjectCode* oc,
2998 unsigned long symbolNumber,
2999 unsigned long target,
3000 int fromThumb,
3001 int toThumb )
3002 {
3003 SymbolExtra *extra;
3004
3005 ASSERT( symbolNumber >= oc->first_symbol_extra
3006 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3007
3008 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3009
3010 // Make sure instruction mode bit is set properly
3011 if (toThumb)
3012 target |= 1;
3013 else
3014 target &= ~1;
3015
3016 if (!fromThumb) {
3017 // In ARM encoding:
3018 // movw r12, #0
3019 // movt r12, #0
3020 // bx r12
3021 uint32_t code[] = { 0xe300c000, 0xe340c000, 0xe12fff1c };
3022
3023 // Patch lower half-word into movw
3024 code[0] |= ((target>>12) & 0xf) << 16;
3025 code[0] |= target & 0xfff;
3026 // Patch upper half-word into movt
3027 target >>= 16;
3028 code[1] |= ((target>>12) & 0xf) << 16;
3029 code[1] |= target & 0xfff;
3030
3031 memcpy(extra->jumpIsland, code, 12);
3032
3033 } else {
3034 // In Thumb encoding:
3035 // movw r12, #0
3036 // movt r12, #0
3037 // bx r12
3038 uint16_t code[] = { 0xf240, 0x0c00,
3039 0xf2c0, 0x0c00,
3040 0x4760 };
3041
3042 // Patch lower half-word into movw
3043 code[0] |= (target>>12) & 0xf;
3044 code[0] |= ((target>>11) & 0x1) << 10;
3045 code[1] |= ((target>>8) & 0x7) << 12;
3046 code[1] |= target & 0xff;
3047 // Patch upper half-word into movt
3048 target >>= 16;
3049 code[2] |= (target>>12) & 0xf;
3050 code[2] |= ((target>>11) & 0x1) << 10;
3051 code[3] |= ((target>>8) & 0x7) << 12;
3052 code[3] |= target & 0xff;
3053
3054 memcpy(extra->jumpIsland, code, 10);
3055 }
3056
3057 return extra;
3058 }
3059 #endif // arm_HOST_ARCH
3060
3061 /* --------------------------------------------------------------------------
3062 * PowerPC specifics (instruction cache flushing)
3063 * ------------------------------------------------------------------------*/
3064
3065 #ifdef powerpc_HOST_ARCH
3066 /*
3067 ocFlushInstructionCache
3068
3069 Flush the data & instruction caches.
3070 Because the PPC has split data/instruction caches, we have to
3071 do that whenever we modify code at runtime.
3072 */
3073
3074 static void
3075 ocFlushInstructionCacheFrom(void* begin, size_t length)
3076 {
3077 size_t n = (length + 3) / 4;
3078 unsigned long* p = begin;
3079
3080 while (n--)
3081 {
3082 __asm__ volatile ( "dcbf 0,%0\n\t"
3083 "sync\n\t"
3084 "icbi 0,%0"
3085 :
3086 : "r" (p)
3087 );
3088 p++;
3089 }
3090 __asm__ volatile ( "sync\n\t"
3091 "isync"
3092 );
3093 }
3094
3095 static void
3096 ocFlushInstructionCache( ObjectCode *oc )
3097 {
3098 /* The main object code */
3099 ocFlushInstructionCacheFrom(oc->image
3100 #ifdef darwin_HOST_OS
3101 + oc->misalignment
3102 #endif
3103 , oc->fileSize);
3104
3105 /* Jump Islands */
3106 ocFlushInstructionCacheFrom(oc->symbol_extras, sizeof(SymbolExtra) * oc->n_symbol_extras);
3107 }
3108 #endif /* powerpc_HOST_ARCH */
3109
3110
3111 /* --------------------------------------------------------------------------
3112 * PEi386 specifics (Win32 targets)
3113 * ------------------------------------------------------------------------*/
3114
3115 /* The information for this linker comes from
3116 Microsoft Portable Executable
3117 and Common Object File Format Specification
3118 revision 5.1 January 1998
3119 which SimonM says comes from the MS Developer Network CDs.
3120
3121 It can be found there (on older CDs), but can also be found
3122 online at:
3123
3124 http://www.microsoft.com/hwdev/hardware/PECOFF.asp
3125
3126 (this is Rev 6.0 from February 1999).
3127
3128 Things move, so if that fails, try searching for it via
3129
3130 http://www.google.com/search?q=PE+COFF+specification
3131
3132 The ultimate reference for the PE format is the Winnt.h
3133 header file that comes with the Platform SDKs; as always,
3134 implementations will drift wrt their documentation.
3135
3136 A good background article on the PE format is Matt Pietrek's
3137 March 1994 article in Microsoft System Journal (MSJ)
3138 (Vol.9, No. 3): "Peering Inside the PE: A Tour of the
3139 Win32 Portable Executable File Format." The info in there
3140 has recently been updated in a two part article in
3141 MSDN magazine, issues Feb and March 2002,
3142 "Inside Windows: An In-Depth Look into the Win32 Portable
3143 Executable File Format"
3144
3145 John Levine's book "Linkers and Loaders" contains useful
3146 info on PE too.
3147 */
3148
3149
3150 #if defined(OBJFORMAT_PEi386)
3151
3152
3153
3154 typedef unsigned char UChar;
3155 typedef unsigned short UInt16;
3156 typedef unsigned int UInt32;
3157 typedef int Int32;
3158 typedef unsigned long long int UInt64;
3159
3160
3161 typedef
3162 struct {
3163 UInt16 Machine;
3164 UInt16 NumberOfSections;
3165 UInt32 TimeDateStamp;
3166 UInt32 PointerToSymbolTable;
3167 UInt32 NumberOfSymbols;
3168 UInt16 SizeOfOptionalHeader;
3169 UInt16 Characteristics;
3170 }
3171 COFF_header;
3172
3173 #define sizeof_COFF_header 20
3174
3175
3176 typedef
3177 struct {
3178 UChar Name[8];
3179 UInt32 VirtualSize;
3180 UInt32 VirtualAddress;
3181 UInt32 SizeOfRawData;
3182 UInt32 PointerToRawData;
3183 UInt32 PointerToRelocations;
3184 UInt32 PointerToLinenumbers;
3185 UInt16 NumberOfRelocations;
3186 UInt16 NumberOfLineNumbers;
3187 UInt32 Characteristics;
3188 }
3189 COFF_section;
3190
3191 #define sizeof_COFF_section 40
3192
3193
3194 typedef
3195 struct {
3196 UChar Name[8];
3197 UInt32 Value;
3198 UInt16 SectionNumber;
3199 UInt16 Type;
3200 UChar StorageClass;
3201 UChar NumberOfAuxSymbols;
3202 }
3203 COFF_symbol;
3204
3205 #define sizeof_COFF_symbol 18
3206
3207
3208 typedef
3209 struct {
3210 UInt32 VirtualAddress;
3211 UInt32 SymbolTableIndex;
3212 UInt16 Type;
3213 }
3214 COFF_reloc;
3215
3216 #define sizeof_COFF_reloc 10
3217
3218
3219 /* From PE spec doc, section 3.3.2 */
3220 /* Note use of MYIMAGE_* since IMAGE_* are already defined in
3221 windows.h -- for the same purpose, but I want to know what I'm
3222 getting, here. */
3223 #define MYIMAGE_FILE_RELOCS_STRIPPED 0x0001
3224 #define MYIMAGE_FILE_EXECUTABLE_IMAGE 0x0002
3225 #define MYIMAGE_FILE_DLL 0x2000
3226 #define MYIMAGE_FILE_SYSTEM 0x1000
3227 #define MYIMAGE_FILE_BYTES_REVERSED_HI 0x8000
3228 #define MYIMAGE_FILE_BYTES_REVERSED_LO 0x0080
3229 #define MYIMAGE_FILE_32BIT_MACHINE 0x0100
3230
3231 /* From PE spec doc, section 5.4.2 and 5.4.4 */
3232 #define MYIMAGE_SYM_CLASS_EXTERNAL 2
3233 #define MYIMAGE_SYM_CLASS_STATIC 3
3234 #define MYIMAGE_SYM_UNDEFINED 0
3235
3236 /* From PE spec doc, section 4.1 */
3237 #define MYIMAGE_SCN_CNT_CODE 0x00000020
3238 #define MYIMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
3239 #define MYIMAGE_SCN_LNK_NRELOC_OVFL 0x01000000
3240
3241 /* From PE spec doc, section 5.2.1 */
3242 #define MYIMAGE_REL_I386_DIR32 0x0006
3243 #define MYIMAGE_REL_I386_REL32 0x0014
3244
3245
3246 /* We use myindex to calculate array addresses, rather than
3247 simply doing the normal subscript thing. That's because
3248 some of the above structs have sizes which are not
3249 a whole number of words. GCC rounds their sizes up to a
3250 whole number of words, which means that the address calcs
3251 arising from using normal C indexing or pointer arithmetic
3252 are just plain wrong. Sigh.
3253 */
3254 static UChar *
3255 myindex ( int scale, void* base, int index )
3256 {
3257 return
3258 ((UChar*)base) + scale * index;
3259 }
3260
3261
3262 static void
3263 printName ( UChar* name, UChar* strtab )
3264 {
3265 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3266 UInt32 strtab_offset = * (UInt32*)(name+4);
3267 debugBelch("%s", strtab + strtab_offset );
3268 } else {
3269 int i;
3270 for (i = 0; i < 8; i++) {
3271 if (name[i] == 0) break;
3272 debugBelch("%c", name[i] );
3273 }
3274 }
3275 }
3276
3277
3278 static void
3279 copyName ( UChar* name, UChar* strtab, UChar* dst, int dstSize )
3280 {
3281 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3282 UInt32 strtab_offset = * (UInt32*)(name+4);
3283 strncpy ( (char*)dst, (char*)strtab+strtab_offset, dstSize );
3284 dst[dstSize-1] = 0;
3285 } else {
3286 int i = 0;
3287 while (1) {
3288 if (i >= 8) break;
3289 if (name[i] == 0) break;
3290 dst[i] = name[i];
3291 i++;
3292 }
3293 dst[i] = 0;
3294 }
3295 }
3296
3297
3298 static UChar *
3299 cstring_from_COFF_symbol_name ( UChar* name, UChar* strtab )
3300 {
3301 UChar* newstr;
3302 /* If the string is longer than 8 bytes, look in the
3303 string table for it -- this will be correctly zero terminated.
3304 */
3305 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3306 UInt32 strtab_offset = * (UInt32*)(name+4);
3307 return ((UChar*)strtab) + strtab_offset;
3308 }
3309 /* Otherwise, if shorter than 8 bytes, return the original,
3310 which by defn is correctly terminated.
3311 */
3312 if (name[7]==0) return name;
3313 /* The annoying case: 8 bytes. Copy into a temporary
3314 (XXX which is never freed ...)
3315 */
3316 newstr = stgMallocBytes(9, "cstring_from_COFF_symbol_name");
3317 ASSERT(newstr);
3318 strncpy((char*)newstr,(char*)name,8);
3319 newstr[8] = 0;
3320 return newstr;
3321 }
3322
3323 /* Getting the name of a section is mildly tricky, so we make a
3324 function for it. Sadly, in one case we have to copy the string
3325 (when it is exactly 8 bytes long there's no trailing '\0'), so for
3326 consistency we *always* copy the string; the caller must free it
3327 */
3328 static char *
3329 cstring_from_section_name (UChar* name, UChar* strtab)
3330 {
3331 char *newstr;
3332
3333 if (name[0]=='/') {
3334 int strtab_offset = strtol((char*)name+1,NULL,10);
3335 int len = strlen(((char*)strtab) + strtab_offset);
3336
3337 newstr = stgMallocBytes(len+1, "cstring_from_section_symbol_name");
3338 strcpy((char*)newstr, (char*)((UChar*)strtab) + strtab_offset);
3339 return newstr;
3340 }
3341 else
3342 {
3343 newstr = stgMallocBytes(9, "cstring_from_section_symbol_name");
3344 ASSERT(newstr);
3345 strncpy((char*)newstr,(char*)name,8);
3346 newstr[8] = 0;
3347 return newstr;
3348 }
3349 }
3350
3351 /* Just compares the short names (first 8 chars) */
3352 static COFF_section *
3353 findPEi386SectionCalled ( ObjectCode* oc, UChar* name )
3354 {
3355 int i;
3356 COFF_header* hdr
3357 = (COFF_header*)(oc->image);
3358 COFF_section* sectab
3359 = (COFF_section*) (
3360 ((UChar*)(oc->image))
3361 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3362 );
3363 for (i = 0; i < hdr->NumberOfSections; i++) {
3364 UChar* n1;
3365 UChar* n2;
3366 COFF_section* section_i
3367 = (COFF_section*)
3368 myindex ( sizeof_COFF_section, sectab, i );
3369 n1 = (UChar*) &(section_i->Name);
3370 n2 = name;
3371 if (n1[0]==n2[0] && n1[1]==n2[1] && n1[2]==n2[2] &&
3372 n1[3]==n2[3] && n1[4]==n2[4] && n1[5]==n2[5] &&
3373 n1[6]==n2[6] && n1[7]==n2[7])
3374 return section_i;
3375 }
3376
3377 return NULL;
3378 }
3379
3380 static void
3381 zapTrailingAtSign ( UChar* sym )
3382 {
3383 # define my_isdigit(c) ((c) >= '0' && (c) <= '9')
3384 int i, j;
3385 if (sym[0] == 0) return;
3386 i = 0;
3387 while (sym[i] != 0) i++;
3388 i--;
3389 j = i;
3390 while (j > 0 && my_isdigit(sym[j])) j--;
3391 if (j > 0 && sym[j] == '@' && j != i) sym[j] = 0;
3392 # undef my_isdigit
3393 }
3394
3395 static void *
3396 lookupSymbolInDLLs ( UChar *lbl )
3397 {
3398 OpenedDLL* o_dll;
3399 void *sym;
3400
3401 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
3402 /* debugBelch("look in %s for %s\n", o_dll->name, lbl); */
3403
3404 if (lbl[0] == '_') {
3405 /* HACK: if the name has an initial underscore, try stripping
3406 it off & look that up first. I've yet to verify whether there's
3407 a Rule that governs whether an initial '_' *should always* be
3408 stripped off when mapping from import lib name to the DLL name.
3409 */
3410 sym = GetProcAddress(o_dll->instance, (char*)(lbl+1));
3411 if (sym != NULL) {
3412 /*debugBelch("found %s in %s\n", lbl+1,o_dll->name);*/
3413 return sym;
3414 }
3415 }
3416 sym = GetProcAddress(o_dll->instance, (char*)lbl);
3417 if (sym != NULL) {
3418 /*debugBelch("found %s in %s\n", lbl,o_dll->name);*/
3419 return sym;
3420 }
3421 }
3422 return NULL;
3423 }
3424
3425
3426 static int
3427 ocVerifyImage_PEi386 ( ObjectCode* oc )
3428 {
3429 int i;
3430 UInt32 j, noRelocs;
3431 COFF_header* hdr;
3432 COFF_section* sectab;
3433 COFF_symbol* symtab;
3434 UChar* strtab;
3435 /* debugBelch("\nLOADING %s\n", oc->fileName); */
3436 hdr = (COFF_header*)(oc->image);
3437 sectab = (COFF_section*) (
3438 ((UChar*)(oc->image))
3439 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3440 );
3441 symtab = (COFF_symbol*) (
3442 ((UChar*)(oc->image))
3443 + hdr->PointerToSymbolTable
3444 );
3445 strtab = ((UChar*)symtab)
3446 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3447
3448 #if defined(i386_HOST_ARCH)
3449 if (hdr->Machine != 0x14c) {
3450 errorBelch("%" PATH_FMT ": Not x86 PEi386", oc->fileName);
3451 return 0;
3452 }
3453 #elif defined(x86_64_HOST_ARCH)
3454 if (hdr->Machine != 0x8664) {
3455 errorBelch("%" PATH_FMT ": Not x86_64 PEi386", oc->fileName);
3456 return 0;
3457 }
3458 #else
3459 errorBelch("PEi386 not supported on this arch");
3460 #endif
3461
3462 if (hdr->SizeOfOptionalHeader != 0) {
3463 errorBelch("%" PATH_FMT ": PEi386 with nonempty optional header", oc->fileName);
3464 return 0;
3465 }
3466 if ( /* (hdr->Characteristics & MYIMAGE_FILE_RELOCS_STRIPPED) || */
3467 (hdr->Characteristics & MYIMAGE_FILE_EXECUTABLE_IMAGE) ||
3468 (hdr->Characteristics & MYIMAGE_FILE_DLL) ||
3469 (hdr->Characteristics & MYIMAGE_FILE_SYSTEM) ) {
3470 errorBelch("%" PATH_FMT ": Not a PEi386 object file", oc->fileName);
3471 return 0;
3472 }
3473 if ( (hdr->Characteristics & MYIMAGE_FILE_BYTES_REVERSED_HI)
3474 /* || !(hdr->Characteristics & MYIMAGE_FILE_32BIT_MACHINE) */ ) {
3475 errorBelch("%" PATH_FMT ": Invalid PEi386 word size or endiannness: %d",
3476 oc->fileName,
3477 (int)(hdr->Characteristics));
3478 return 0;
3479 }
3480 /* If the string table size is way crazy, this might indicate that
3481 there are more than 64k relocations, despite claims to the
3482 contrary. Hence this test. */
3483 /* debugBelch("strtab size %d\n", * (UInt32*)strtab); */
3484 #if 0
3485 if ( (*(UInt32*)strtab) > 600000 ) {
3486 /* Note that 600k has no special significance other than being
3487 big enough to handle the almost-2MB-sized lumps that
3488 constitute HSwin32*.o. */
3489 debugBelch("PEi386 object has suspiciously large string table; > 64k relocs?");
3490 return 0;
3491 }
3492 #endif
3493
3494 /* No further verification after this point; only debug printing. */
3495 i = 0;
3496 IF_DEBUG(linker, i=1);
3497 if (i == 0) return 1;
3498
3499 debugBelch( "sectab offset = %" FMT_Int "\n", ((UChar*)sectab) - ((UChar*)hdr) );
3500 debugBelch( "symtab offset = %" FMT_Int "\n", ((UChar*)symtab) - ((UChar*)hdr) );
3501 debugBelch( "strtab offset = %" FMT_Int "\n", ((UChar*)strtab) - ((UChar*)hdr) );
3502
3503 debugBelch("\n" );
3504 debugBelch( "Machine: 0x%x\n", (UInt32)(hdr->Machine) );
3505 debugBelch( "# sections: %d\n", (UInt32)(hdr->NumberOfSections) );
3506 debugBelch( "time/date: 0x%x\n", (UInt32)(hdr->TimeDateStamp) );
3507 debugBelch( "symtab offset: %d\n", (UInt32)(hdr->PointerToSymbolTable) );
3508 debugBelch( "# symbols: %d\n", (UInt32)(hdr->NumberOfSymbols) );
3509 debugBelch( "sz of opt hdr: %d\n", (UInt32)(hdr->SizeOfOptionalHeader) );
3510 debugBelch( "characteristics: 0x%x\n", (UInt32)(hdr->Characteristics) );
3511
3512 /* Print the section table. */
3513 debugBelch("\n" );
3514 for (i = 0; i < hdr->NumberOfSections; i++) {
3515 COFF_reloc* reltab;
3516 COFF_section* sectab_i
3517 = (COFF_section*)
3518 myindex ( sizeof_COFF_section, sectab, i );
3519 debugBelch(
3520 "\n"
3521 "section %d\n"
3522 " name `",
3523 i
3524 );
3525 printName ( sectab_i->Name, strtab );
3526 debugBelch(
3527 "'\n"
3528 " vsize %d\n"
3529 " vaddr %d\n"
3530 " data sz %d\n"
3531 " data off %d\n"
3532 " num rel %d\n"
3533 " off rel %d\n"
3534 " ptr raw 0x%x\n",
3535 sectab_i->VirtualSize,
3536 sectab_i->VirtualAddress,
3537 sectab_i->SizeOfRawData,
3538 sectab_i->PointerToRawData,
3539 sectab_i->NumberOfRelocations,
3540 sectab_i->PointerToRelocations,
3541 sectab_i->PointerToRawData
3542 );
3543 reltab = (COFF_reloc*) (
3544 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
3545 );
3546
3547 if ( sectab_i->Characteristics & MYIMAGE_SCN_LNK_NRELOC_OVFL ) {
3548 /* If the relocation field (a short) has overflowed, the
3549 * real count can be found in the first reloc entry.
3550 *
3551 * See Section 4.1 (last para) of the PE spec (rev6.0).
3552 */
3553 COFF_reloc* rel = (COFF_reloc*)
3554 myindex ( sizeof_COFF_reloc, reltab, 0 );
3555 noRelocs = rel->VirtualAddress;
3556 j = 1;
3557 } else {
3558 noRelocs = sectab_i->NumberOfRelocations;
3559 j = 0;
3560 }
3561
3562 for (; j < noRelocs; j++) {
3563 COFF_symbol* sym;
3564 COFF_reloc* rel = (COFF_reloc*)
3565 myindex ( sizeof_COFF_reloc, reltab, j );
3566 debugBelch(
3567 " type 0x%-4x vaddr 0x%-8x name `",
3568 (UInt32)rel->Type,
3569 rel->VirtualAddress );
3570 sym = (COFF_symbol*)
3571 myindex ( sizeof_COFF_symbol, symtab, rel->SymbolTableIndex );
3572 /* Hmm..mysterious looking offset - what's it for? SOF */
3573 printName ( sym->Name, strtab -10 );
3574 debugBelch("'\n" );
3575 }
3576
3577 debugBelch("\n" );
3578 }
3579 debugBelch("\n" );
3580 debugBelch("string table has size 0x%x\n", * (UInt32*)strtab );
3581 debugBelch("---START of string table---\n");
3582 for (i = 4; i < *(Int32*)strtab; i++) {
3583 if (strtab[i] == 0)
3584 debugBelch("\n"); else
3585 debugBelch("%c", strtab[i] );
3586 }
3587 debugBelch("--- END of string table---\n");
3588
3589 debugBelch("\n" );
3590 i = 0;
3591 while (1) {
3592 COFF_symbol* symtab_i;
3593 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
3594 symtab_i = (COFF_symbol*)
3595 myindex ( sizeof_COFF_symbol, symtab, i );
3596 debugBelch(
3597 "symbol %d\n"
3598 " name `",
3599 i
3600 );
3601 printName ( symtab_i->Name, strtab );
3602 debugBelch(
3603 "'\n"
3604 " value 0x%x\n"
3605 " 1+sec# %d\n"
3606 " type 0x%x\n"
3607 " sclass 0x%x\n"
3608 " nAux %d\n",
3609 symtab_i->Value,
3610 (Int32)(symtab_i->SectionNumber),
3611 (UInt32)symtab_i->Type,
3612 (UInt32)symtab_i->StorageClass,
3613 (UInt32)symtab_i->NumberOfAuxSymbols
3614 );
3615 i += symtab_i->NumberOfAuxSymbols;
3616 i++;
3617 }
3618
3619 debugBelch("\n" );
3620 return 1;
3621 }
3622
3623
3624 static int
3625 ocGetNames_PEi386 ( ObjectCode* oc )
3626 {
3627 COFF_header* hdr;
3628 COFF_section* sectab;
3629 COFF_symbol* symtab;
3630 UChar* strtab;
3631
3632 UChar* sname;
3633 void* addr;
3634 int i;
3635
3636 hdr = (COFF_header*)(oc->image);
3637 sectab = (COFF_section*) (
3638 ((UChar*)(oc->image))
3639 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3640 );
3641 symtab = (COFF_symbol*) (
3642 ((UChar*)(oc->image))
3643 + hdr->PointerToSymbolTable
3644 );
3645 strtab = ((UChar*)(oc->image))
3646 + hdr->PointerToSymbolTable
3647 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3648
3649 /* Allocate space for any (local, anonymous) .bss sections. */
3650
3651 for (i = 0; i < hdr->NumberOfSections; i++) {
3652 UInt32 bss_sz;
3653 UChar* zspace;
3654 COFF_section* sectab_i
3655 = (COFF_section*)
3656 myindex ( sizeof_COFF_section, sectab, i );
3657
3658 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3659
3660 if (0 != strcmp(secname, ".bss")) {
3661 stgFree(secname);
3662 continue;
3663 }
3664
3665 stgFree(secname);
3666
3667 /* sof 10/05: the PE spec text isn't too clear regarding what
3668 * the SizeOfRawData field is supposed to hold for object
3669 * file sections containing just uninitialized data -- for executables,
3670 * it is supposed to be zero; unclear what it's supposed to be
3671 * for object files. However, VirtualSize is guaranteed to be
3672 * zero for object files, which definitely suggests that SizeOfRawData
3673 * will be non-zero (where else would the size of this .bss section be
3674 * stored?) Looking at the COFF_section info for incoming object files,
3675 * this certainly appears to be the case.
3676 *
3677 * => I suspect we've been incorrectly handling .bss sections in (relocatable)
3678 * object files up until now. This turned out to bite us with ghc-6.4.1's use
3679 * of gcc-3.4.x, which has started to emit initially-zeroed-out local 'static'
3680 * variable decls into to the .bss section. (The specific function in Q which
3681 * triggered this is libraries/base/cbits/dirUtils.c:__hscore_getFolderPath())
3682 */
3683 if (sectab_i->VirtualSize == 0 && sectab_i->SizeOfRawData == 0) continue;
3684 /* This is a non-empty .bss section. Allocate zeroed space for
3685 it, and set its PointerToRawData field such that oc->image +
3686 PointerToRawData == addr_of_zeroed_space. */
3687 bss_sz = sectab_i->VirtualSize;
3688 if ( bss_sz < sectab_i->SizeOfRawData) { bss_sz = sectab_i->SizeOfRawData; }
3689 zspace = stgCallocBytes(1, bss_sz, "ocGetNames_PEi386(anonymous bss)");
3690 sectab_i->PointerToRawData = ((UChar*)zspace) - ((UChar*)(oc->image));
3691 addProddableBlock(oc, zspace, bss_sz);
3692 /* debugBelch("BSS anon section at 0x%x\n", zspace); */
3693 }
3694
3695 /* Copy section information into the ObjectCode. */
3696
3697 for (i = 0; i < hdr->NumberOfSections; i++) {
3698 UChar* start;
3699 UChar* end;
3700 UInt32 sz;
3701
3702 SectionKind kind
3703 = SECTIONKIND_OTHER;
3704 COFF_section* sectab_i
3705 = (COFF_section*)
3706 myindex ( sizeof_COFF_section, sectab, i );
3707
3708 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3709
3710 IF_DEBUG(linker, debugBelch("section name = %s\n", secname ));
3711
3712 # if 0
3713 /* I'm sure this is the Right Way to do it. However, the
3714 alternative of testing the sectab_i->Name field seems to
3715 work ok with Cygwin.
3716 */
3717 if (sectab_i->Characteristics & MYIMAGE_SCN_CNT_CODE ||
3718 sectab_i->Characteristics & MYIMAGE_SCN_CNT_INITIALIZED_DATA)
3719 kind = SECTIONKIND_CODE_OR_RODATA;
3720 # endif
3721
3722 if (0==strcmp(".text",(char*)secname) ||
3723 0==strcmp(".text.startup",(char*)secname) ||
3724 0==strcmp(".rdata",(char*)secname)||
3725 0==strcmp(".rodata",(char*)secname))
3726 kind = SECTIONKIND_CODE_OR_RODATA;
3727 if (0==strcmp(".data",(char*)secname) ||
3728 0==strcmp(".bss",(char*)secname))
3729 kind = SECTIONKIND_RWDATA;
3730
3731 ASSERT(sectab_i->SizeOfRawData == 0 || sectab_i->VirtualSize == 0);
3732 sz = sectab_i->SizeOfRawData;
3733 if (sz < sectab_i->VirtualSize) sz = sectab_i->VirtualSize;
3734
3735 start = ((UChar*)(oc->image)) + sectab_i->PointerToRawData;
3736 end = start + sz - 1;
3737
3738 if (kind == SECTIONKIND_OTHER
3739 /* Ignore sections called which contain stabs debugging
3740 information. */
3741 && 0 != strcmp(".stab", (char*)secname)
3742 && 0 != strcmp(".stabstr", (char*)secname)
3743 /* Ignore sections called which contain exception information. */
3744 && 0 != strcmp(".pdata", (char*)secname)
3745 && 0 != strcmp(".xdata", (char*)secname)
3746 /* ignore constructor section for now */
3747 && 0 != strcmp(".ctors", (char*)secname)
3748 /* ignore section generated from .ident */
3749 && 0!= strncmp(".debug", (char*)secname, 6)
3750 /* ignore unknown section that appeared in gcc 3.4.5(?) */
3751 && 0!= strcmp(".reloc", (char*)secname)
3752 && 0 != strcmp(".rdata$zzz", (char*)secname)
3753 ) {
3754 errorBelch("Unknown PEi386 section name `%s' (while processing: %" PATH_FMT")", secname, oc->fileName);
3755 stgFree(secname);
3756 return 0;
3757 }
3758
3759 if (kind != SECTIONKIND_OTHER && end >= start) {
3760 if ((((size_t)(start)) % sizeof(void *)) != 0) {
3761 barf("Misaligned section: %p", start);
3762 }
3763
3764 addSection(oc, kind, start, end);
3765 addProddableBlock(oc, start, end - start + 1);
3766 }
3767
3768 stgFree(secname);
3769 }
3770
3771 /* Copy exported symbols into the ObjectCode. */
3772
3773 oc->n_symbols = hdr->NumberOfSymbols;
3774 oc->symbols = stgMallocBytes(oc->n_symbols * sizeof(char*),
3775 "ocGetNames_PEi386(oc->symbols)");
3776 /* Call me paranoid; I don't care. */
3777 for (i = 0; i < oc->n_symbols; i++)
3778 oc->symbols[i] = NULL;
3779
3780 i = 0;
3781 while (1) {
3782 COFF_symbol* symtab_i;
3783 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
3784 symtab_i = (COFF_symbol*)
3785 myindex ( sizeof_COFF_symbol, symtab, i );
3786
3787 addr = NULL;
3788
3789 if (symtab_i->StorageClass == MYIMAGE_SYM_CLASS_EXTERNAL
3790 && symtab_i->SectionNumber != MYIMAGE_SYM_UNDEFINED) {
3791 /* This symbol is global and defined, viz, exported */
3792 /* for MYIMAGE_SYMCLASS_EXTERNAL
3793 && !MYIMAGE_SYM_UNDEFINED,
3794 the address of the symbol is:
3795 address of relevant section + offset in section
3796 */
3797 COFF_section* sectabent
3798 = (COFF_section*) myindex ( sizeof_COFF_section,
3799 sectab,
3800 symtab_i->SectionNumber-1 );
3801 addr = ((UChar*)(oc->image))
3802 + (sectabent->PointerToRawData
3803 + symtab_i->Value);
3804 }
3805 else
3806 if (symtab_i->SectionNumber == MYIMAGE_SYM_UNDEFINED
3807 && symtab_i->Value > 0) {
3808 /* This symbol isn't in any section at all, ie, global bss.
3809 Allocate zeroed space for it. */
3810 addr = stgCallocBytes(1, symtab_i->Value,
3811 "ocGetNames_PEi386(non-anonymous bss)");
3812 addSection(oc, SECTIONKIND_RWDATA, addr,
3813 ((UChar*)addr) + symtab_i->Value - 1);
3814 addProddableBlock(oc, addr, symtab_i->Value);
3815 /* debugBelch("BSS section at 0x%x\n", addr); */
3816 }
3817
3818 if (addr != NULL ) {
3819 sname = cstring_from_COFF_symbol_name ( symtab_i->Name, strtab );
3820 /* debugBelch("addSymbol %p `%s \n", addr,sname); */
3821 IF_DEBUG(linker, debugBelch("addSymbol %p `%s'\n", addr,sname);)
3822 ASSERT(i >= 0 && i < oc->n_symbols);
3823 /* cstring_from_COFF_symbol_name always succeeds. */
3824 oc->symbols[i] = (char*)sname;
3825 ghciInsertStrHashTable(oc->fileName, symhash, (char*)sname, addr);
3826 } else {
3827 # if 0
3828 debugBelch(
3829 "IGNORING symbol %d\n"
3830 " name `",
3831 i
3832 );
3833 printName ( symtab_i->Name, strtab );
3834 debugBelch(
3835 "'\n"
3836 " value 0x%x\n"
3837 " 1+sec# %d\n"
3838 " type 0x%x\n"
3839 " sclass 0x%x\n"
3840 " nAux %d\n",
3841 symtab_i->Value,
3842 (Int32)(symtab_i->SectionNumber),
3843 (UInt32)symtab_i->Type,
3844 (UInt32)symtab_i->StorageClass,
3845 (UInt32)symtab_i->NumberOfAuxSymbols
3846 );
3847 # endif
3848 }
3849
3850 i += symtab_i->NumberOfAuxSymbols;
3851 i++;
3852 }
3853
3854 return 1;
3855 }
3856
3857
3858 static int
3859 ocResolve_PEi386 ( ObjectCode* oc )
3860 {
3861 COFF_header* hdr;
3862 COFF_section* sectab;
3863 COFF_symbol* symtab;
3864 UChar* strtab;
3865
3866 UInt32 A;
3867 size_t S;
3868 void * pP;
3869
3870 int i;
3871 UInt32 j, noRelocs;
3872
3873 /* ToDo: should be variable-sized? But is at least safe in the
3874 sense of buffer-overrun-proof. */
3875 UChar symbol[1000];
3876 /* debugBelch("resolving for %s\n", oc->fileName); */
3877
3878 hdr = (COFF_header*)(oc->image);
3879 sectab = (COFF_section*) (
3880 ((UChar*)(oc->image))
3881 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3882 );
3883 symtab = (COFF_symbol*) (
3884 ((UChar*)(oc->image))
3885 + hdr->PointerToSymbolTable
3886 );
3887 strtab = ((UChar*)(oc->image))
3888 + hdr->PointerToSymbolTable
3889 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3890
3891 for (i = 0; i < hdr->NumberOfSections; i++) {
3892 COFF_section* sectab_i
3893 = (COFF_section*)
3894 myindex ( sizeof_COFF_section, sectab, i );
3895 COFF_reloc* reltab
3896 = (COFF_reloc*) (
3897 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
3898 );
3899
3900 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3901
3902 /* Ignore sections called which contain stabs debugging
3903 information. */
3904 if (0 == strcmp(".stab", (char*)secname)
3905 || 0 == strcmp(".stabstr", (char*)secname)
3906 || 0 == strcmp(".pdata", (char*)secname)
3907 || 0 == strcmp(".xdata", (char*)secname)
3908 || 0 == strcmp(".ctors", (char*)secname)
3909 || 0 == strncmp(".debug", (char*)secname, 6)
3910 || 0 == strcmp(".rdata$zzz", (char*)secname)) {
3911 stgFree(secname);
3912 continue;
3913 }
3914
3915 stgFree(secname);
3916
3917 if ( sectab_i->Characteristics & MYIMAGE_SCN_LNK_NRELOC_OVFL ) {
3918 /* If the relocation field (a short) has overflowed, the
3919 * real count can be found in the first reloc entry.
3920 *
3921 * See Section 4.1 (last para) of the PE spec (rev6.0).
3922 *
3923 * Nov2003 update: the GNU linker still doesn't correctly
3924 * handle the generation of relocatable object files with
3925 * overflown relocations. Hence the output to warn of potential
3926 * troubles.
3927 */
3928 COFF_reloc* rel = (COFF_reloc*)
3929 myindex ( sizeof_COFF_reloc, reltab, 0 );
3930 noRelocs = rel->VirtualAddress;
3931
3932 /* 10/05: we now assume (and check for) a GNU ld that is capable
3933 * of handling object files with (>2^16) of relocs.
3934 */
3935 #if 0
3936 debugBelch("WARNING: Overflown relocation field (# relocs found: %u)\n",
3937 noRelocs);
3938 #endif
3939 j = 1;
3940 } else {
3941 noRelocs = sectab_i->NumberOfRelocations;
3942 j = 0;
3943 }
3944
3945 for (; j < noRelocs; j++) {
3946 COFF_symbol* sym;
3947 COFF_reloc* reltab_j
3948 = (COFF_reloc*)
3949 myindex ( sizeof_COFF_reloc, reltab, j );
3950
3951 /* the location to patch */
3952 pP = (
3953 ((UChar*)(oc->image))
3954 + (sectab_i->PointerToRawData
3955 + reltab_j->VirtualAddress
3956 - sectab_i->VirtualAddress )
3957 );
3958 /* the existing contents of pP */
3959 A = *(UInt32*)pP;
3960 /* the symbol to connect to */
3961 sym = (COFF_symbol*)
3962 myindex ( sizeof_COFF_symbol,
3963 symtab, reltab_j->SymbolTableIndex );
3964 IF_DEBUG(linker,
3965 debugBelch(
3966 "reloc sec %2d num %3d: type 0x%-4x "
3967 "vaddr 0x%-8x name `",
3968 i, j,
3969 (UInt32)reltab_j->Type,
3970 reltab_j->VirtualAddress );
3971 printName ( sym->Name, strtab );
3972 debugBelch("'\n" ));
3973
3974 if (sym->StorageClass == MYIMAGE_SYM_CLASS_STATIC) {
3975 COFF_section* section_sym
3976 = findPEi386SectionCalled ( oc, sym->Name );
3977 if (!section_sym) {
3978 errorBelch("%" PATH_FMT ": can't find section `%s'", oc->fileName, sym->Name);
3979 return 0;
3980 }
3981 S = ((size_t)(oc->image))
3982 + ((size_t)(section_sym->PointerToRawData))
3983 + ((size_t)(sym->Value));
3984 } else {
3985 copyName ( sym->Name, strtab, symbol, 1000-1 );
3986 S = (size_t) lookupSymbol( (char*)symbol );
3987 if ((void*)S != NULL) goto foundit;
3988 errorBelch("%" PATH_FMT ": unknown symbol `%s'", oc->fileName, symbol);
3989 return 0;
3990 foundit:;
3991 }
3992 /* All supported relocations write at least 4 bytes */
3993 checkProddableBlock(oc, pP, 4);
3994 switch (reltab_j->Type) {
3995 #if defined(i386_HOST_ARCH)
3996 case MYIMAGE_REL_I386_DIR32:
3997 *(UInt32 *)pP = ((UInt32)S) + A;
3998 break;
3999 case MYIMAGE_REL_I386_REL32:
4000 /* Tricky. We have to insert a displacement at
4001 pP which, when added to the PC for the _next_
4002 insn, gives the address of the target (S).
4003 Problem is to know the address of the next insn
4004 when we only know pP. We assume that this
4005 literal field is always the last in the insn,
4006 so that the address of the next insn is pP+4
4007 -- hence the constant 4.
4008 Also I don't know if A should be added, but so
4009 far it has always been zero.
4010