Add PrimOp: casIntArray#. Modify casMutVar# for 'ticketed' style.
[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_GHC_PROGRAMS
145 int dynamicGhcPrograms = 1;
146 #else
147 int dynamicGhcPrograms = 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_addCFinalizzerToWeakzh) \
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_SINGLE_ctr) \
905 SymI_HasProto(ENT_STATIC_THK_MANY_ctr) \
906 SymI_HasProto(ENT_DYN_THK_SINGLE_ctr) \
907 SymI_HasProto(ENT_DYN_THK_MANY_ctr) \
908 SymI_HasProto(ENT_STATIC_FUN_DIRECT_ctr) \
909 SymI_HasProto(ENT_DYN_FUN_DIRECT_ctr) \
910 SymI_HasProto(ENT_STATIC_CON_ctr) \
911 SymI_HasProto(ENT_DYN_CON_ctr) \
912 SymI_HasProto(ENT_STATIC_IND_ctr) \
913 SymI_HasProto(ENT_DYN_IND_ctr) \
914 SymI_HasProto(ENT_PERM_IND_ctr) \
915 SymI_HasProto(ENT_PAP_ctr) \
916 SymI_HasProto(ENT_AP_ctr) \
917 SymI_HasProto(ENT_AP_STACK_ctr) \
918 SymI_HasProto(ENT_BH_ctr) \
919 SymI_HasProto(ENT_LNE_ctr) \
920 SymI_HasProto(UNKNOWN_CALL_ctr) \
921 SymI_HasProto(SLOW_CALL_fast_v16_ctr) \
922 SymI_HasProto(SLOW_CALL_fast_v_ctr) \
923 SymI_HasProto(SLOW_CALL_fast_f_ctr) \
924 SymI_HasProto(SLOW_CALL_fast_d_ctr) \
925 SymI_HasProto(SLOW_CALL_fast_l_ctr) \
926 SymI_HasProto(SLOW_CALL_fast_n_ctr) \
927 SymI_HasProto(SLOW_CALL_fast_p_ctr) \
928 SymI_HasProto(SLOW_CALL_fast_pv_ctr) \
929 SymI_HasProto(SLOW_CALL_fast_pp_ctr) \
930 SymI_HasProto(SLOW_CALL_fast_ppv_ctr) \
931 SymI_HasProto(SLOW_CALL_fast_ppp_ctr) \
932 SymI_HasProto(SLOW_CALL_fast_pppv_ctr) \
933 SymI_HasProto(SLOW_CALL_fast_pppp_ctr) \
934 SymI_HasProto(SLOW_CALL_fast_ppppp_ctr) \
935 SymI_HasProto(SLOW_CALL_fast_pppppp_ctr) \
936 SymI_HasProto(VERY_SLOW_CALL_ctr) \
937 SymI_HasProto(ticky_slow_call_unevald) \
938 SymI_HasProto(SLOW_CALL_ctr) \
939 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_ctr) \
940 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_CHUNKS_ctr) \
941 SymI_HasProto(KNOWN_CALL_ctr) \
942 SymI_HasProto(KNOWN_CALL_TOO_FEW_ARGS_ctr) \
943 SymI_HasProto(KNOWN_CALL_EXTRA_ARGS_ctr) \
944 SymI_HasProto(SLOW_CALL_FUN_TOO_FEW_ctr) \
945 SymI_HasProto(SLOW_CALL_FUN_CORRECT_ctr) \
946 SymI_HasProto(SLOW_CALL_FUN_TOO_MANY_ctr) \
947 SymI_HasProto(SLOW_CALL_PAP_TOO_FEW_ctr) \
948 SymI_HasProto(SLOW_CALL_PAP_CORRECT_ctr) \
949 SymI_HasProto(SLOW_CALL_PAP_TOO_MANY_ctr) \
950 SymI_HasProto(SLOW_CALL_UNEVALD_ctr) \
951 SymI_HasProto(UPDF_OMITTED_ctr) \
952 SymI_HasProto(UPDF_PUSHED_ctr) \
953 SymI_HasProto(CATCHF_PUSHED_ctr) \
954 SymI_HasProto(UPDF_RCC_PUSHED_ctr) \
955 SymI_HasProto(UPDF_RCC_OMITTED_ctr) \
956 SymI_HasProto(UPD_SQUEEZED_ctr) \
957 SymI_HasProto(UPD_CON_IN_NEW_ctr) \
958 SymI_HasProto(UPD_CON_IN_PLACE_ctr) \
959 SymI_HasProto(UPD_PAP_IN_NEW_ctr) \
960 SymI_HasProto(UPD_PAP_IN_PLACE_ctr) \
961 SymI_HasProto(ALLOC_HEAP_ctr) \
962 SymI_HasProto(ALLOC_HEAP_tot) \
963 SymI_HasProto(HEAP_CHK_ctr) \
964 SymI_HasProto(STK_CHK_ctr) \
965 SymI_HasProto(ALLOC_RTS_ctr) \
966 SymI_HasProto(ALLOC_RTS_tot) \
967 SymI_HasProto(ALLOC_FUN_ctr) \
968 SymI_HasProto(ALLOC_FUN_adm) \
969 SymI_HasProto(ALLOC_FUN_gds) \
970 SymI_HasProto(ALLOC_FUN_slp) \
971 SymI_HasProto(UPD_NEW_IND_ctr) \
972 SymI_HasProto(UPD_NEW_PERM_IND_ctr) \
973 SymI_HasProto(UPD_OLD_IND_ctr) \
974 SymI_HasProto(UPD_OLD_PERM_IND_ctr) \
975 SymI_HasProto(UPD_CAF_BH_UPDATABLE_ctr) \
976 SymI_HasProto(UPD_CAF_BH_SINGLE_ENTRY_ctr) \
977 SymI_HasProto(GC_SEL_ABANDONED_ctr) \
978 SymI_HasProto(GC_SEL_MINOR_ctr) \
979 SymI_HasProto(GC_SEL_MAJOR_ctr) \
980 SymI_HasProto(GC_FAILED_PROMOTION_ctr) \
981 SymI_HasProto(ALLOC_UP_THK_ctr) \
982 SymI_HasProto(ALLOC_SE_THK_ctr) \
983 SymI_HasProto(ALLOC_THK_adm) \
984 SymI_HasProto(ALLOC_THK_gds) \
985 SymI_HasProto(ALLOC_THK_slp) \
986 SymI_HasProto(ALLOC_CON_ctr) \
987 SymI_HasProto(ALLOC_CON_adm) \
988 SymI_HasProto(ALLOC_CON_gds) \
989 SymI_HasProto(ALLOC_CON_slp) \
990 SymI_HasProto(ALLOC_TUP_ctr) \
991 SymI_HasProto(ALLOC_TUP_adm) \
992 SymI_HasProto(ALLOC_TUP_gds) \
993 SymI_HasProto(ALLOC_TUP_slp) \
994 SymI_HasProto(ALLOC_BH_ctr) \
995 SymI_HasProto(ALLOC_BH_adm) \
996 SymI_HasProto(ALLOC_BH_gds) \
997 SymI_HasProto(ALLOC_BH_slp) \
998 SymI_HasProto(ALLOC_PRIM_ctr) \
999 SymI_HasProto(ALLOC_PRIM_adm) \
1000 SymI_HasProto(ALLOC_PRIM_gds) \
1001 SymI_HasProto(ALLOC_PRIM_slp) \
1002 SymI_HasProto(ALLOC_PAP_ctr) \
1003 SymI_HasProto(ALLOC_PAP_adm) \
1004 SymI_HasProto(ALLOC_PAP_gds) \
1005 SymI_HasProto(ALLOC_PAP_slp) \
1006 SymI_HasProto(ALLOC_TSO_ctr) \
1007 SymI_HasProto(ALLOC_TSO_adm) \
1008 SymI_HasProto(ALLOC_TSO_gds) \
1009 SymI_HasProto(ALLOC_TSO_slp) \
1010 SymI_HasProto(RET_NEW_ctr) \
1011 SymI_HasProto(RET_OLD_ctr) \
1012 SymI_HasProto(RET_UNBOXED_TUP_ctr) \
1013 SymI_HasProto(RET_SEMI_loads_avoided)
1014
1015
1016 // On most platforms, the garbage collector rewrites references
1017 // to small integer and char objects to a set of common, shared ones.
1018 //
1019 // We don't do this when compiling to Windows DLLs at the moment because
1020 // it doesn't support cross package data references well.
1021 //
1022 #if defined(COMPILING_WINDOWS_DLL)
1023 #define RTS_INTCHAR_SYMBOLS
1024 #else
1025 #define RTS_INTCHAR_SYMBOLS \
1026 SymI_HasProto(stg_CHARLIKE_closure) \
1027 SymI_HasProto(stg_INTLIKE_closure)
1028 #endif
1029
1030
1031 #define RTS_SYMBOLS \
1032 Maybe_Stable_Names \
1033 RTS_TICKY_SYMBOLS \
1034 SymI_HasProto(StgReturn) \
1035 SymI_HasProto(stg_gc_noregs) \
1036 SymI_HasProto(stg_ret_v_info) \
1037 SymI_HasProto(stg_ret_p_info) \
1038 SymI_HasProto(stg_ret_n_info) \
1039 SymI_HasProto(stg_ret_f_info) \
1040 SymI_HasProto(stg_ret_d_info) \
1041 SymI_HasProto(stg_ret_l_info) \
1042 SymI_HasProto(stg_gc_prim_p) \
1043 SymI_HasProto(stg_gc_prim_pp) \
1044 SymI_HasProto(stg_gc_prim_n) \
1045 SymI_HasProto(stg_enter_info) \
1046 SymI_HasProto(__stg_gc_enter_1) \
1047 SymI_HasProto(stg_gc_unpt_r1) \
1048 SymI_HasProto(stg_gc_unbx_r1) \
1049 SymI_HasProto(stg_gc_f1) \
1050 SymI_HasProto(stg_gc_d1) \
1051 SymI_HasProto(stg_gc_l1) \
1052 SymI_HasProto(stg_gc_pp) \
1053 SymI_HasProto(stg_gc_ppp) \
1054 SymI_HasProto(stg_gc_pppp) \
1055 SymI_HasProto(__stg_gc_fun) \
1056 SymI_HasProto(stg_gc_fun_info) \
1057 SymI_HasProto(stg_yield_noregs) \
1058 SymI_HasProto(stg_yield_to_interpreter) \
1059 SymI_HasProto(stg_block_noregs) \
1060 SymI_HasProto(stg_block_takemvar) \
1061 SymI_HasProto(stg_block_readmvar) \
1062 SymI_HasProto(stg_block_putmvar) \
1063 MAIN_CAP_SYM \
1064 SymI_HasProto(MallocFailHook) \
1065 SymI_HasProto(OnExitHook) \
1066 SymI_HasProto(OutOfHeapHook) \
1067 SymI_HasProto(StackOverflowHook) \
1068 SymI_HasProto(addDLL) \
1069 SymI_HasProto(__int_encodeDouble) \
1070 SymI_HasProto(__word_encodeDouble) \
1071 SymI_HasProto(__int_encodeFloat) \
1072 SymI_HasProto(__word_encodeFloat) \
1073 SymI_HasProto(stg_atomicallyzh) \
1074 SymI_HasProto(barf) \
1075 SymI_HasProto(debugBelch) \
1076 SymI_HasProto(errorBelch) \
1077 SymI_HasProto(sysErrorBelch) \
1078 SymI_HasProto(stg_getMaskingStatezh) \
1079 SymI_HasProto(stg_maskAsyncExceptionszh) \
1080 SymI_HasProto(stg_maskUninterruptiblezh) \
1081 SymI_HasProto(stg_catchzh) \
1082 SymI_HasProto(stg_catchRetryzh) \
1083 SymI_HasProto(stg_catchSTMzh) \
1084 SymI_HasProto(stg_checkzh) \
1085 SymI_HasProto(closure_flags) \
1086 SymI_HasProto(cmp_thread) \
1087 SymI_HasProto(createAdjustor) \
1088 SymI_HasProto(stg_decodeDoublezu2Intzh) \
1089 SymI_HasProto(stg_decodeFloatzuIntzh) \
1090 SymI_HasProto(defaultsHook) \
1091 SymI_HasProto(stg_delayzh) \
1092 SymI_HasProto(stg_deRefWeakzh) \
1093 SymI_HasProto(stg_deRefStablePtrzh) \
1094 SymI_HasProto(dirty_MUT_VAR) \
1095 SymI_HasProto(dirty_TVAR) \
1096 SymI_HasProto(stg_forkzh) \
1097 SymI_HasProto(stg_forkOnzh) \
1098 SymI_HasProto(forkProcess) \
1099 SymI_HasProto(forkOS_createThread) \
1100 SymI_HasProto(freeHaskellFunctionPtr) \
1101 SymI_HasProto(getOrSetGHCConcSignalSignalHandlerStore) \
1102 SymI_HasProto(getOrSetGHCConcWindowsPendingDelaysStore) \
1103 SymI_HasProto(getOrSetGHCConcWindowsIOManagerThreadStore) \
1104 SymI_HasProto(getOrSetGHCConcWindowsProddingStore) \
1105 SymI_HasProto(getOrSetSystemEventThreadEventManagerStore) \
1106 SymI_HasProto(getOrSetSystemEventThreadIOManagerThreadStore) \
1107 SymI_HasProto(getOrSetSystemTimerThreadEventManagerStore) \
1108 SymI_HasProto(getOrSetSystemTimerThreadIOManagerThreadStore) \
1109 SymI_HasProto(getOrSetLibHSghcFastStringTable) \
1110 SymI_HasProto(getGCStats) \
1111 SymI_HasProto(getGCStatsEnabled) \
1112 SymI_HasProto(genericRaise) \
1113 SymI_HasProto(getProgArgv) \
1114 SymI_HasProto(getFullProgArgv) \
1115 SymI_HasProto(getStablePtr) \
1116 SymI_HasProto(hs_init) \
1117 SymI_HasProto(hs_exit) \
1118 SymI_HasProto(hs_set_argv) \
1119 SymI_HasProto(hs_add_root) \
1120 SymI_HasProto(hs_perform_gc) \
1121 SymI_HasProto(hs_lock_stable_tables) \
1122 SymI_HasProto(hs_unlock_stable_tables) \
1123 SymI_HasProto(hs_free_stable_ptr) \
1124 SymI_HasProto(hs_free_stable_ptr_unsafe) \
1125 SymI_HasProto(hs_free_fun_ptr) \
1126 SymI_HasProto(hs_hpc_rootModule) \
1127 SymI_HasProto(hs_hpc_module) \
1128 SymI_HasProto(initLinker) \
1129 SymI_HasProto(stg_unpackClosurezh) \
1130 SymI_HasProto(stg_getApStackValzh) \
1131 SymI_HasProto(stg_getSparkzh) \
1132 SymI_HasProto(stg_numSparkszh) \
1133 SymI_HasProto(stg_isCurrentThreadBoundzh) \
1134 SymI_HasProto(stg_isEmptyMVarzh) \
1135 SymI_HasProto(stg_killThreadzh) \
1136 SymI_HasProto(loadArchive) \
1137 SymI_HasProto(loadObj) \
1138 SymI_HasProto(insertStableSymbol) \
1139 SymI_HasProto(insertSymbol) \
1140 SymI_HasProto(lookupSymbol) \
1141 SymI_HasProto(stg_makeStablePtrzh) \
1142 SymI_HasProto(stg_mkApUpd0zh) \
1143 SymI_HasProto(stg_myThreadIdzh) \
1144 SymI_HasProto(stg_labelThreadzh) \
1145 SymI_HasProto(stg_newArrayzh) \
1146 SymI_HasProto(stg_newArrayArrayzh) \
1147 SymI_HasProto(stg_casArrayzh) \
1148 SymI_HasProto(stg_newBCOzh) \
1149 SymI_HasProto(stg_newByteArrayzh) \
1150 SymI_HasProto(stg_casIntArrayzh) \
1151 SymI_HasProto_redirect(newCAF, newDynCAF) \
1152 SymI_HasProto(stg_newMVarzh) \
1153 SymI_HasProto(stg_newMutVarzh) \
1154 SymI_HasProto(stg_newTVarzh) \
1155 SymI_HasProto(stg_noDuplicatezh) \
1156 SymI_HasProto(stg_atomicModifyMutVarzh) \
1157 SymI_HasProto(stg_casMutVarzh) \
1158 SymI_HasProto(stg_newPinnedByteArrayzh) \
1159 SymI_HasProto(stg_newAlignedPinnedByteArrayzh) \
1160 SymI_HasProto(newSpark) \
1161 SymI_HasProto(performGC) \
1162 SymI_HasProto(performMajorGC) \
1163 SymI_HasProto(prog_argc) \
1164 SymI_HasProto(prog_argv) \
1165 SymI_HasProto(stg_putMVarzh) \
1166 SymI_HasProto(stg_raisezh) \
1167 SymI_HasProto(stg_raiseIOzh) \
1168 SymI_HasProto(stg_readTVarzh) \
1169 SymI_HasProto(stg_readTVarIOzh) \
1170 SymI_HasProto(resumeThread) \
1171 SymI_HasProto(setNumCapabilities) \
1172 SymI_HasProto(getNumberOfProcessors) \
1173 SymI_HasProto(resolveObjs) \
1174 SymI_HasProto(stg_retryzh) \
1175 SymI_HasProto(rts_apply) \
1176 SymI_HasProto(rts_checkSchedStatus) \
1177 SymI_HasProto(rts_eval) \
1178 SymI_HasProto(rts_evalIO) \
1179 SymI_HasProto(rts_evalLazyIO) \
1180 SymI_HasProto(rts_evalStableIO) \
1181 SymI_HasProto(rts_eval_) \
1182 SymI_HasProto(rts_getBool) \
1183 SymI_HasProto(rts_getChar) \
1184 SymI_HasProto(rts_getDouble) \
1185 SymI_HasProto(rts_getFloat) \
1186 SymI_HasProto(rts_getInt) \
1187 SymI_HasProto(rts_getInt8) \
1188 SymI_HasProto(rts_getInt16) \
1189 SymI_HasProto(rts_getInt32) \
1190 SymI_HasProto(rts_getInt64) \
1191 SymI_HasProto(rts_getPtr) \
1192 SymI_HasProto(rts_getFunPtr) \
1193 SymI_HasProto(rts_getStablePtr) \
1194 SymI_HasProto(rts_getThreadId) \
1195 SymI_HasProto(rts_getWord) \
1196 SymI_HasProto(rts_getWord8) \
1197 SymI_HasProto(rts_getWord16) \
1198 SymI_HasProto(rts_getWord32) \
1199 SymI_HasProto(rts_getWord64) \
1200 SymI_HasProto(rts_lock) \
1201 SymI_HasProto(rts_mkBool) \
1202 SymI_HasProto(rts_mkChar) \
1203 SymI_HasProto(rts_mkDouble) \
1204 SymI_HasProto(rts_mkFloat) \
1205 SymI_HasProto(rts_mkInt) \
1206 SymI_HasProto(rts_mkInt8) \
1207 SymI_HasProto(rts_mkInt16) \
1208 SymI_HasProto(rts_mkInt32) \
1209 SymI_HasProto(rts_mkInt64) \
1210 SymI_HasProto(rts_mkPtr) \
1211 SymI_HasProto(rts_mkFunPtr) \
1212 SymI_HasProto(rts_mkStablePtr) \
1213 SymI_HasProto(rts_mkString) \
1214 SymI_HasProto(rts_mkWord) \
1215 SymI_HasProto(rts_mkWord8) \
1216 SymI_HasProto(rts_mkWord16) \
1217 SymI_HasProto(rts_mkWord32) \
1218 SymI_HasProto(rts_mkWord64) \
1219 SymI_HasProto(rts_unlock) \
1220 SymI_HasProto(rts_unsafeGetMyCapability) \
1221 SymI_HasProto(rtsSupportsBoundThreads) \
1222 SymI_HasProto(rts_isProfiled) \
1223 SymI_HasProto(setProgArgv) \
1224 SymI_HasProto(startupHaskell) \
1225 SymI_HasProto(shutdownHaskell) \
1226 SymI_HasProto(shutdownHaskellAndExit) \
1227 SymI_HasProto(stable_name_table) \
1228 SymI_HasProto(stable_ptr_table) \
1229 SymI_HasProto(stackOverflow) \
1230 SymI_HasProto(stg_CAF_BLACKHOLE_info) \
1231 SymI_HasProto(stg_BLACKHOLE_info) \
1232 SymI_HasProto(__stg_EAGER_BLACKHOLE_info) \
1233 SymI_HasProto(stg_BLOCKING_QUEUE_CLEAN_info) \
1234 SymI_HasProto(stg_BLOCKING_QUEUE_DIRTY_info) \
1235 SymI_HasProto(startTimer) \
1236 SymI_HasProto(stg_MVAR_CLEAN_info) \
1237 SymI_HasProto(stg_MVAR_DIRTY_info) \
1238 SymI_HasProto(stg_TVAR_CLEAN_info) \
1239 SymI_HasProto(stg_TVAR_DIRTY_info) \
1240 SymI_HasProto(stg_IND_STATIC_info) \
1241 SymI_HasProto(stg_ARR_WORDS_info) \
1242 SymI_HasProto(stg_MUT_ARR_PTRS_DIRTY_info) \
1243 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN_info) \
1244 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN0_info) \
1245 SymI_HasProto(stg_WEAK_info) \
1246 SymI_HasProto(stg_ap_v_info) \
1247 SymI_HasProto(stg_ap_f_info) \
1248 SymI_HasProto(stg_ap_d_info) \
1249 SymI_HasProto(stg_ap_l_info) \
1250 SymI_HasProto(stg_ap_v16_info) \
1251 SymI_HasProto(stg_ap_n_info) \
1252 SymI_HasProto(stg_ap_p_info) \
1253 SymI_HasProto(stg_ap_pv_info) \
1254 SymI_HasProto(stg_ap_pp_info) \
1255 SymI_HasProto(stg_ap_ppv_info) \
1256 SymI_HasProto(stg_ap_ppp_info) \
1257 SymI_HasProto(stg_ap_pppv_info) \
1258 SymI_HasProto(stg_ap_pppp_info) \
1259 SymI_HasProto(stg_ap_ppppp_info) \
1260 SymI_HasProto(stg_ap_pppppp_info) \
1261 SymI_HasProto(stg_ap_0_fast) \
1262 SymI_HasProto(stg_ap_v_fast) \
1263 SymI_HasProto(stg_ap_f_fast) \
1264 SymI_HasProto(stg_ap_d_fast) \
1265 SymI_HasProto(stg_ap_l_fast) \
1266 SymI_HasProto(stg_ap_v16_fast) \
1267 SymI_HasProto(stg_ap_n_fast) \
1268 SymI_HasProto(stg_ap_p_fast) \
1269 SymI_HasProto(stg_ap_pv_fast) \
1270 SymI_HasProto(stg_ap_pp_fast) \
1271 SymI_HasProto(stg_ap_ppv_fast) \
1272 SymI_HasProto(stg_ap_ppp_fast) \
1273 SymI_HasProto(stg_ap_pppv_fast) \
1274 SymI_HasProto(stg_ap_pppp_fast) \
1275 SymI_HasProto(stg_ap_ppppp_fast) \
1276 SymI_HasProto(stg_ap_pppppp_fast) \
1277 SymI_HasProto(stg_ap_1_upd_info) \
1278 SymI_HasProto(stg_ap_2_upd_info) \
1279 SymI_HasProto(stg_ap_3_upd_info) \
1280 SymI_HasProto(stg_ap_4_upd_info) \
1281 SymI_HasProto(stg_ap_5_upd_info) \
1282 SymI_HasProto(stg_ap_6_upd_info) \
1283 SymI_HasProto(stg_ap_7_upd_info) \
1284 SymI_HasProto(stg_exit) \
1285 SymI_HasProto(stg_sel_0_upd_info) \
1286 SymI_HasProto(stg_sel_1_upd_info) \
1287 SymI_HasProto(stg_sel_2_upd_info) \
1288 SymI_HasProto(stg_sel_3_upd_info) \
1289 SymI_HasProto(stg_sel_4_upd_info) \
1290 SymI_HasProto(stg_sel_5_upd_info) \
1291 SymI_HasProto(stg_sel_6_upd_info) \
1292 SymI_HasProto(stg_sel_7_upd_info) \
1293 SymI_HasProto(stg_sel_8_upd_info) \
1294 SymI_HasProto(stg_sel_9_upd_info) \
1295 SymI_HasProto(stg_sel_10_upd_info) \
1296 SymI_HasProto(stg_sel_11_upd_info) \
1297 SymI_HasProto(stg_sel_12_upd_info) \
1298 SymI_HasProto(stg_sel_13_upd_info) \
1299 SymI_HasProto(stg_sel_14_upd_info) \
1300 SymI_HasProto(stg_sel_15_upd_info) \
1301 SymI_HasProto(stg_sel_0_noupd_info) \
1302 SymI_HasProto(stg_sel_1_noupd_info) \
1303 SymI_HasProto(stg_sel_2_noupd_info) \
1304 SymI_HasProto(stg_sel_3_noupd_info) \
1305 SymI_HasProto(stg_sel_4_noupd_info) \
1306 SymI_HasProto(stg_sel_5_noupd_info) \
1307 SymI_HasProto(stg_sel_6_noupd_info) \
1308 SymI_HasProto(stg_sel_7_noupd_info) \
1309 SymI_HasProto(stg_sel_8_noupd_info) \
1310 SymI_HasProto(stg_sel_9_noupd_info) \
1311 SymI_HasProto(stg_sel_10_noupd_info) \
1312 SymI_HasProto(stg_sel_11_noupd_info) \
1313 SymI_HasProto(stg_sel_12_noupd_info) \
1314 SymI_HasProto(stg_sel_13_noupd_info) \
1315 SymI_HasProto(stg_sel_14_noupd_info) \
1316 SymI_HasProto(stg_sel_15_noupd_info) \
1317 SymI_HasProto(stg_upd_frame_info) \
1318 SymI_HasProto(stg_bh_upd_frame_info) \
1319 SymI_HasProto(suspendThread) \
1320 SymI_HasProto(stg_takeMVarzh) \
1321 SymI_HasProto(stg_readMVarzh) \
1322 SymI_HasProto(stg_threadStatuszh) \
1323 SymI_HasProto(stg_tryPutMVarzh) \
1324 SymI_HasProto(stg_tryTakeMVarzh) \
1325 SymI_HasProto(stg_tryReadMVarzh) \
1326 SymI_HasProto(stg_unmaskAsyncExceptionszh) \
1327 SymI_HasProto(unloadObj) \
1328 SymI_HasProto(stg_unsafeThawArrayzh) \
1329 SymI_HasProto(stg_waitReadzh) \
1330 SymI_HasProto(stg_waitWritezh) \
1331 SymI_HasProto(stg_writeTVarzh) \
1332 SymI_HasProto(stg_yieldzh) \
1333 SymI_NeedsProto(stg_interp_constr_entry) \
1334 SymI_HasProto(stg_arg_bitmaps) \
1335 SymI_HasProto(large_alloc_lim) \
1336 SymI_HasProto(g0) \
1337 SymI_HasProto(allocate) \
1338 SymI_HasProto(allocateExec) \
1339 SymI_HasProto(freeExec) \
1340 SymI_HasProto(getAllocations) \
1341 SymI_HasProto(revertCAFs) \
1342 SymI_HasProto(RtsFlags) \
1343 SymI_NeedsProto(rts_breakpoint_io_action) \
1344 SymI_NeedsProto(rts_stop_next_breakpoint) \
1345 SymI_NeedsProto(rts_stop_on_exception) \
1346 SymI_HasProto(stopTimer) \
1347 SymI_HasProto(n_capabilities) \
1348 SymI_HasProto(enabled_capabilities) \
1349 SymI_HasProto(stg_traceCcszh) \
1350 SymI_HasProto(stg_traceEventzh) \
1351 SymI_HasProto(stg_traceMarkerzh) \
1352 SymI_HasProto(getMonotonicNSec) \
1353 SymI_HasProto(lockFile) \
1354 SymI_HasProto(unlockFile) \
1355 SymI_HasProto(startProfTimer) \
1356 SymI_HasProto(stopProfTimer) \
1357 RTS_USER_SIGNALS_SYMBOLS \
1358 RTS_INTCHAR_SYMBOLS
1359
1360
1361 // 64-bit support functions in libgcc.a
1362 #if defined(__GNUC__) && SIZEOF_VOID_P <= 4 && !defined(_ABIN32)
1363 #define RTS_LIBGCC_SYMBOLS \
1364 SymI_NeedsProto(__divdi3) \
1365 SymI_NeedsProto(__udivdi3) \
1366 SymI_NeedsProto(__moddi3) \
1367 SymI_NeedsProto(__umoddi3) \
1368 SymI_NeedsProto(__muldi3) \
1369 SymI_NeedsProto(__ashldi3) \
1370 SymI_NeedsProto(__ashrdi3) \
1371 SymI_NeedsProto(__lshrdi3) \
1372 SymI_NeedsProto(__fixunsdfdi)
1373 #else
1374 #define RTS_LIBGCC_SYMBOLS
1375 #endif
1376
1377 #if defined(darwin_HOST_OS) && defined(powerpc_HOST_ARCH)
1378 // Symbols that don't have a leading underscore
1379 // on Mac OS X. They have to receive special treatment,
1380 // see machoInitSymbolsWithoutUnderscore()
1381 #define RTS_MACHO_NOUNDERLINE_SYMBOLS \
1382 SymI_NeedsProto(saveFP) \
1383 SymI_NeedsProto(restFP)
1384 #endif
1385
1386 /* entirely bogus claims about types of these symbols */
1387 #define SymI_NeedsProto(vvv) extern void vvv(void);
1388 #if defined(COMPILING_WINDOWS_DLL)
1389 #define SymE_HasProto(vvv) SymE_HasProto(vvv);
1390 # if defined(x86_64_HOST_ARCH)
1391 # define SymE_NeedsProto(vvv) extern void __imp_ ## vvv (void);
1392 # else
1393 # define SymE_NeedsProto(vvv) extern void _imp__ ## vvv (void);
1394 # endif
1395 #else
1396 #define SymE_NeedsProto(vvv) SymI_NeedsProto(vvv);
1397 #define SymE_HasProto(vvv) SymI_HasProto(vvv)
1398 #endif
1399 #define SymI_HasProto(vvv) /**/
1400 #define SymI_HasProto_redirect(vvv,xxx) /**/
1401 RTS_SYMBOLS
1402 RTS_RET_SYMBOLS
1403 RTS_POSIX_ONLY_SYMBOLS
1404 RTS_MINGW_ONLY_SYMBOLS
1405 RTS_CYGWIN_ONLY_SYMBOLS
1406 RTS_DARWIN_ONLY_SYMBOLS
1407 RTS_LIBGCC_SYMBOLS
1408 RTS_LIBFFI_SYMBOLS
1409 #undef SymI_NeedsProto
1410 #undef SymI_HasProto
1411 #undef SymI_HasProto_redirect
1412 #undef SymE_HasProto
1413 #undef SymE_NeedsProto
1414
1415 #ifdef LEADING_UNDERSCORE
1416 #define MAYBE_LEADING_UNDERSCORE_STR(s) ("_" s)
1417 #else
1418 #define MAYBE_LEADING_UNDERSCORE_STR(s) (s)
1419 #endif
1420
1421 #define SymI_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1422 (void*)(&(vvv)) },
1423 #define SymE_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1424 (void*)DLL_IMPORT_DATA_REF(vvv) },
1425
1426 #define SymI_NeedsProto(vvv) SymI_HasProto(vvv)
1427 #define SymE_NeedsProto(vvv) SymE_HasProto(vvv)
1428
1429 // SymI_HasProto_redirect allows us to redirect references to one symbol to
1430 // another symbol. See newCAF/newDynCAF for an example.
1431 #define SymI_HasProto_redirect(vvv,xxx) \
1432 { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1433 (void*)(&(xxx)) },
1434
1435 static RtsSymbolVal rtsSyms[] = {
1436 RTS_SYMBOLS
1437 RTS_RET_SYMBOLS
1438 RTS_POSIX_ONLY_SYMBOLS
1439 RTS_MINGW_ONLY_SYMBOLS
1440 RTS_CYGWIN_ONLY_SYMBOLS
1441 RTS_DARWIN_ONLY_SYMBOLS
1442 RTS_LIBGCC_SYMBOLS
1443 RTS_LIBFFI_SYMBOLS
1444 #if defined(darwin_HOST_OS) && defined(i386_HOST_ARCH)
1445 // dyld stub code contains references to this,
1446 // but it should never be called because we treat
1447 // lazy pointers as nonlazy.
1448 { "dyld_stub_binding_helper", (void*)0xDEADBEEF },
1449 #endif
1450 { 0, 0 } /* sentinel */
1451 };
1452
1453
1454 /* -----------------------------------------------------------------------------
1455 * Insert symbols into hash tables, checking for duplicates.
1456 */
1457
1458 static void ghciInsertStrHashTable ( pathchar* obj_name,
1459 HashTable *table,
1460 char* key,
1461 void *data
1462 )
1463 {
1464 if (lookupHashTable(table, (StgWord)key) == NULL)
1465 {
1466 insertStrHashTable(table, (StgWord)key, data);
1467 return;
1468 }
1469 debugBelch(
1470 "\n\n"
1471 "GHCi runtime linker: fatal error: I found a duplicate definition for symbol\n"
1472 " %s\n"
1473 "whilst processing object file\n"
1474 " %" PATH_FMT "\n"
1475 "This could be caused by:\n"
1476 " * Loading two different object files which export the same symbol\n"
1477 " * Specifying the same object file twice on the GHCi command line\n"
1478 " * An incorrect `package.conf' entry, causing some object to be\n"
1479 " loaded twice.\n"
1480 "GHCi cannot safely continue in this situation. Exiting now. Sorry.\n"
1481 "\n",
1482 (char*)key,
1483 obj_name
1484 );
1485 stg_exit(1);
1486 }
1487 /* -----------------------------------------------------------------------------
1488 * initialize the object linker
1489 */
1490
1491
1492 static int linker_init_done = 0 ;
1493
1494 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1495 static void *dl_prog_handle;
1496 static regex_t re_invalid;
1497 static regex_t re_realso;
1498 #ifdef THREADED_RTS
1499 static Mutex dl_mutex; // mutex to protect dlopen/dlerror critical section
1500 #endif
1501 #endif
1502
1503 void
1504 initLinker( void )
1505 {
1506 RtsSymbolVal *sym;
1507 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1508 int compileResult;
1509 #endif
1510
1511 IF_DEBUG(linker, debugBelch("initLinker: start\n"));
1512
1513 /* Make initLinker idempotent, so we can call it
1514 before every relevant operation; that means we
1515 don't need to initialise the linker separately */
1516 if (linker_init_done == 1) {
1517 IF_DEBUG(linker, debugBelch("initLinker: idempotent return\n"));
1518 return;
1519 } else {
1520 linker_init_done = 1;
1521 }
1522
1523 #if defined(THREADED_RTS) && (defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO))
1524 initMutex(&dl_mutex);
1525 #endif
1526 stablehash = allocStrHashTable();
1527 symhash = allocStrHashTable();
1528
1529 /* populate the symbol table with stuff from the RTS */
1530 for (sym = rtsSyms; sym->lbl != NULL; sym++) {
1531 ghciInsertStrHashTable(WSTR("(GHCi built-in symbols)"),
1532 symhash, sym->lbl, sym->addr);
1533 IF_DEBUG(linker, debugBelch("initLinker: inserting rts symbol %s, %p\n", sym->lbl, sym->addr));
1534 }
1535 # if defined(OBJFORMAT_MACHO) && defined(powerpc_HOST_ARCH)
1536 machoInitSymbolsWithoutUnderscore();
1537 # endif
1538
1539 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1540 # if defined(RTLD_DEFAULT)
1541 dl_prog_handle = RTLD_DEFAULT;
1542 # else
1543 dl_prog_handle = dlopen(NULL, RTLD_LAZY);
1544 # endif /* RTLD_DEFAULT */
1545
1546 compileResult = regcomp(&re_invalid,
1547 "(([^ \t()])+\\.so([^ \t:()])*):([ \t])*(invalid ELF header|file too short)",
1548 REG_EXTENDED);
1549 if (compileResult != 0) {
1550 barf("Compiling re_invalid failed");
1551 }
1552 compileResult = regcomp(&re_realso,
1553 "(GROUP|INPUT) *\\( *([^ )]+)",
1554 REG_EXTENDED);
1555 if (compileResult != 0) {
1556 barf("Compiling re_realso failed");
1557 }
1558 # endif
1559
1560 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1561 if (RtsFlags.MiscFlags.linkerMemBase != 0) {
1562 // User-override for mmap_32bit_base
1563 mmap_32bit_base = (void*)RtsFlags.MiscFlags.linkerMemBase;
1564 }
1565 #endif
1566
1567 #if defined(mingw32_HOST_OS)
1568 /*
1569 * These two libraries cause problems when added to the static link,
1570 * but are necessary for resolving symbols in GHCi, hence we load
1571 * them manually here.
1572 */
1573 addDLL(WSTR("msvcrt"));
1574 addDLL(WSTR("kernel32"));
1575 #endif
1576
1577 IF_DEBUG(linker, debugBelch("initLinker: done\n"));
1578 return;
1579 }
1580
1581 void
1582 exitLinker( void ) {
1583 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1584 if (linker_init_done == 1) {
1585 regfree(&re_invalid);
1586 regfree(&re_realso);
1587 #ifdef THREADED_RTS
1588 closeMutex(&dl_mutex);
1589 #endif
1590 }
1591 #endif
1592 }
1593
1594 /* -----------------------------------------------------------------------------
1595 * Loading DLL or .so dynamic libraries
1596 * -----------------------------------------------------------------------------
1597 *
1598 * Add a DLL from which symbols may be found. In the ELF case, just
1599 * do RTLD_GLOBAL-style add, so no further messing around needs to
1600 * happen in order that symbols in the loaded .so are findable --
1601 * lookupSymbol() will subsequently see them by dlsym on the program's
1602 * dl-handle. Returns NULL if success, otherwise ptr to an err msg.
1603 *
1604 * In the PEi386 case, open the DLLs and put handles to them in a
1605 * linked list. When looking for a symbol, try all handles in the
1606 * list. This means that we need to load even DLLs that are guaranteed
1607 * to be in the ghc.exe image already, just so we can get a handle
1608 * to give to loadSymbol, so that we can find the symbols. For such
1609 * libraries, the LoadLibrary call should be a no-op except for returning
1610 * the handle.
1611 *
1612 */
1613
1614 #if defined(OBJFORMAT_PEi386)
1615 /* A record for storing handles into DLLs. */
1616
1617 typedef
1618 struct _OpenedDLL {
1619 pathchar* name;
1620 struct _OpenedDLL* next;
1621 HINSTANCE instance;
1622 }
1623 OpenedDLL;
1624
1625 /* A list thereof. */
1626 static OpenedDLL* opened_dlls = NULL;
1627 #endif
1628
1629 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1630
1631 /* Suppose in ghci we load a temporary SO for a module containing
1632 f = 1
1633 and then modify the module, recompile, and load another temporary
1634 SO with
1635 f = 2
1636 Then as we don't unload the first SO, dlsym will find the
1637 f = 1
1638 symbol whereas we want the
1639 f = 2
1640 symbol. We therefore need to keep our own SO handle list, and
1641 try SOs in the right order. */
1642
1643 typedef
1644 struct _OpenedSO {
1645 struct _OpenedSO* next;
1646 void *handle;
1647 }
1648 OpenedSO;
1649
1650 /* A list thereof. */
1651 static OpenedSO* openedSOs = NULL;
1652
1653 static const char *
1654 internal_dlopen(const char *dll_name)
1655 {
1656 OpenedSO* o_so;
1657 void *hdl;
1658 const char *errmsg;
1659 char *errmsg_copy;
1660
1661 // omitted: RTLD_NOW
1662 // see http://www.haskell.org/pipermail/cvs-ghc/2007-September/038570.html
1663 IF_DEBUG(linker,
1664 debugBelch("internal_dlopen: dll_name = '%s'\n", dll_name));
1665
1666 //-------------- Begin critical section ------------------
1667 // This critical section is necessary because dlerror() is not
1668 // required to be reentrant (see POSIX -- IEEE Std 1003.1-2008)
1669 // Also, the error message returned must be copied to preserve it
1670 // (see POSIX also)
1671
1672 ACQUIRE_LOCK(&dl_mutex);
1673 hdl = dlopen(dll_name, RTLD_LAZY | RTLD_GLOBAL);
1674
1675 errmsg = NULL;
1676 if (hdl == NULL) {
1677 /* dlopen failed; return a ptr to the error msg. */
1678 errmsg = dlerror();
1679 if (errmsg == NULL) errmsg = "addDLL: unknown error";
1680 errmsg_copy = stgMallocBytes(strlen(errmsg)+1, "addDLL");
1681 strcpy(errmsg_copy, errmsg);
1682 errmsg = errmsg_copy;
1683 }
1684 o_so = stgMallocBytes(sizeof(OpenedSO), "addDLL");
1685 o_so->handle = hdl;
1686 o_so->next = openedSOs;
1687 openedSOs = o_so;
1688
1689 RELEASE_LOCK(&dl_mutex);
1690 //--------------- End critical section -------------------
1691
1692 return errmsg;
1693 }
1694
1695 static void *
1696 internal_dlsym(void *hdl, const char *symbol) {
1697 OpenedSO* o_so;
1698 void *v;
1699
1700 // We acquire dl_mutex as concurrent dl* calls may alter dlerror
1701 ACQUIRE_LOCK(&dl_mutex);
1702 dlerror();
1703 for (o_so = openedSOs; o_so != NULL; o_so = o_so->next) {
1704 v = dlsym(o_so->handle, symbol);
1705 if (dlerror() == NULL) {
1706 RELEASE_LOCK(&dl_mutex);
1707 return v;
1708 }
1709 }
1710 v = dlsym(hdl, symbol)
1711 RELEASE_LOCK(&dl_mutex);
1712 return v;
1713 }
1714 # endif
1715
1716 const char *
1717 addDLL( pathchar *dll_name )
1718 {
1719 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1720 /* ------------------- ELF DLL loader ------------------- */
1721
1722 #define NMATCH 5
1723 regmatch_t match[NMATCH];
1724 const char *errmsg;
1725 FILE* fp;
1726 size_t match_length;
1727 #define MAXLINE 1000
1728 char line[MAXLINE];
1729 int result;
1730
1731 initLinker();
1732
1733 IF_DEBUG(linker, debugBelch("addDLL: dll_name = '%s'\n", dll_name));
1734 errmsg = internal_dlopen(dll_name);
1735
1736 if (errmsg == NULL) {
1737 return NULL;
1738 }
1739
1740 // GHC Trac ticket #2615
1741 // On some systems (e.g., Gentoo Linux) dynamic files (e.g. libc.so)
1742 // contain linker scripts rather than ELF-format object code. This
1743 // code handles the situation by recognizing the real object code
1744 // file name given in the linker script.
1745 //
1746 // If an "invalid ELF header" error occurs, it is assumed that the
1747 // .so file contains a linker script instead of ELF object code.
1748 // In this case, the code looks for the GROUP ( ... ) linker
1749 // directive. If one is found, the first file name inside the
1750 // parentheses is treated as the name of a dynamic library and the
1751 // code attempts to dlopen that file. If this is also unsuccessful,
1752 // an error message is returned.
1753
1754 // see if the error message is due to an invalid ELF header
1755 IF_DEBUG(linker, debugBelch("errmsg = '%s'\n", errmsg));
1756 result = regexec(&re_invalid, errmsg, (size_t) NMATCH, match, 0);
1757 IF_DEBUG(linker, debugBelch("result = %i\n", result));
1758 if (result == 0) {
1759 // success -- try to read the named file as a linker script
1760 match_length = (size_t) stg_min((match[1].rm_eo - match[1].rm_so),
1761 MAXLINE-1);
1762 strncpy(line, (errmsg+(match[1].rm_so)),match_length);
1763 line[match_length] = '\0'; // make sure string is null-terminated
1764 IF_DEBUG(linker, debugBelch ("file name = '%s'\n", line));
1765 if ((fp = fopen(line, "r")) == NULL) {
1766 return errmsg; // return original error if open fails
1767 }
1768 // try to find a GROUP or INPUT ( ... ) command
1769 while (fgets(line, MAXLINE, fp) != NULL) {
1770 IF_DEBUG(linker, debugBelch("input line = %s", line));
1771 if (regexec(&re_realso, line, (size_t) NMATCH, match, 0) == 0) {
1772 // success -- try to dlopen the first named file
1773 IF_DEBUG(linker, debugBelch("match%s\n",""));
1774 line[match[2].rm_eo] = '\0';
1775 errmsg = internal_dlopen(line+match[2].rm_so);
1776 break;
1777 }
1778 // if control reaches here, no GROUP or INPUT ( ... ) directive
1779 // was found and the original error message is returned to the
1780 // caller
1781 }
1782 fclose(fp);
1783 }
1784 return errmsg;
1785
1786 # elif defined(OBJFORMAT_PEi386)
1787 /* ------------------- Win32 DLL loader ------------------- */
1788
1789 pathchar* buf;
1790 OpenedDLL* o_dll;
1791 HINSTANCE instance;
1792
1793 initLinker();
1794
1795 /* debugBelch("\naddDLL; dll_name = `%s'\n", dll_name); */
1796
1797 /* See if we've already got it, and ignore if so. */
1798 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
1799 if (0 == pathcmp(o_dll->name, dll_name))
1800 return NULL;
1801 }
1802
1803 /* The file name has no suffix (yet) so that we can try
1804 both foo.dll and foo.drv
1805
1806 The documentation for LoadLibrary says:
1807 If no file name extension is specified in the lpFileName
1808 parameter, the default library extension .dll is
1809 appended. However, the file name string can include a trailing
1810 point character (.) to indicate that the module name has no
1811 extension. */
1812
1813 buf = stgMallocBytes((pathlen(dll_name) + 10) * sizeof(wchar_t), "addDLL");
1814 swprintf(buf, L"%s.DLL", dll_name);
1815 instance = LoadLibraryW(buf);
1816 if (instance == NULL) {
1817 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1818 // KAA: allow loading of drivers (like winspool.drv)
1819 swprintf(buf, L"%s.DRV", dll_name);
1820 instance = LoadLibraryW(buf);
1821 if (instance == NULL) {
1822 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1823 // #1883: allow loading of unix-style libfoo.dll DLLs
1824 swprintf(buf, L"lib%s.DLL", dll_name);
1825 instance = LoadLibraryW(buf);
1826 if (instance == NULL) {
1827 goto error;
1828 }
1829 }
1830 }
1831 stgFree(buf);
1832
1833 /* Add this DLL to the list of DLLs in which to search for symbols. */
1834 o_dll = stgMallocBytes( sizeof(OpenedDLL), "addDLL" );
1835 o_dll->name = pathdup(dll_name);
1836 o_dll->instance = instance;
1837 o_dll->next = opened_dlls;
1838 opened_dlls = o_dll;
1839
1840 return NULL;
1841
1842 error:
1843 stgFree(buf);
1844 sysErrorBelch("%" PATH_FMT, dll_name);
1845
1846 /* LoadLibrary failed; return a ptr to the error msg. */
1847 return "addDLL: could not load DLL";
1848
1849 # else
1850 barf("addDLL: not implemented on this platform");
1851 # endif
1852 }
1853
1854 /* -----------------------------------------------------------------------------
1855 * insert a stable symbol in the hash table
1856 */
1857
1858 void
1859 insertStableSymbol(pathchar* obj_name, char* key, StgPtr p)
1860 {
1861 ghciInsertStrHashTable(obj_name, stablehash, key, getStablePtr(p));
1862 }
1863
1864
1865 /* -----------------------------------------------------------------------------
1866 * insert a symbol in the hash table
1867 */
1868 void
1869 insertSymbol(pathchar* obj_name, char* key, void* data)
1870 {
1871 ghciInsertStrHashTable(obj_name, symhash, key, data);
1872 }
1873
1874 /* -----------------------------------------------------------------------------
1875 * lookup a symbol in the hash table
1876 */
1877 void *
1878 lookupSymbol( char *lbl )
1879 {
1880 void *val;
1881 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s\n", lbl));
1882 initLinker() ;
1883 ASSERT(symhash != NULL);
1884 val = lookupStrHashTable(symhash, lbl);
1885
1886 if (val == NULL) {
1887 IF_DEBUG(linker, debugBelch("lookupSymbol: symbol not found\n"));
1888 # if defined(OBJFORMAT_ELF)
1889 return internal_dlsym(dl_prog_handle, lbl);
1890 # elif defined(OBJFORMAT_MACHO)
1891 # if HAVE_DLFCN_H
1892 /* On OS X 10.3 and later, we use dlsym instead of the old legacy
1893 interface.
1894
1895 HACK: On OS X, all symbols are prefixed with an underscore.
1896 However, dlsym wants us to omit the leading underscore from the
1897 symbol name -- the dlsym routine puts it back on before searching
1898 for the symbol. For now, we simply strip it off here (and ONLY
1899 here).
1900 */
1901 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s with dlsym\n", lbl));
1902 ASSERT(lbl[0] == '_');
1903 return internal_dlsym(dl_prog_handle, lbl + 1);
1904 # else
1905 if (NSIsSymbolNameDefined(lbl)) {
1906 NSSymbol symbol = NSLookupAndBindSymbol(lbl);
1907 return NSAddressOfSymbol(symbol);
1908 } else {
1909 return NULL;
1910 }
1911 # endif /* HAVE_DLFCN_H */
1912 # elif defined(OBJFORMAT_PEi386)
1913 void* sym;
1914
1915 sym = lookupSymbolInDLLs((unsigned char*)lbl);
1916 if (sym != NULL) { return sym; };
1917
1918 // Also try looking up the symbol without the @N suffix. Some
1919 // DLLs have the suffixes on their symbols, some don't.
1920 zapTrailingAtSign ( (unsigned char*)lbl );
1921 sym = lookupSymbolInDLLs((unsigned char*)lbl);
1922 if (sym != NULL) { return sym; };
1923 return NULL;
1924
1925 # else
1926 ASSERT(2+2 == 5);
1927 return NULL;
1928 # endif
1929 } else {
1930 IF_DEBUG(linker, debugBelch("lookupSymbol: value of %s is %p\n", lbl, val));
1931 return val;
1932 }
1933 }
1934
1935 /* -----------------------------------------------------------------------------
1936 * Debugging aid: look in GHCi's object symbol tables for symbols
1937 * within DELTA bytes of the specified address, and show their names.
1938 */
1939 #ifdef DEBUG
1940 void ghci_enquire ( char* addr );
1941
1942 void ghci_enquire ( char* addr )
1943 {
1944 int i;
1945 char* sym;
1946 char* a;
1947 const int DELTA = 64;
1948 ObjectCode* oc;
1949
1950 initLinker();
1951
1952 for (oc = objects; oc; oc = oc->next) {
1953 for (i = 0; i < oc->n_symbols; i++) {
1954 sym = oc->symbols[i];
1955 if (sym == NULL) continue;
1956 a = NULL;
1957 if (a == NULL) {
1958 a = lookupStrHashTable(symhash, sym);
1959 }
1960 if (a == NULL) {
1961 // debugBelch("ghci_enquire: can't find %s\n", sym);
1962 }
1963 else if (addr-DELTA <= a && a <= addr+DELTA) {
1964 debugBelch("%p + %3d == `%s'\n", addr, (int)(a - addr), sym);
1965 }
1966 }
1967 }
1968 }
1969 #endif
1970
1971 #ifdef USE_MMAP
1972 #define ROUND_UP(x,size) ((x + size - 1) & ~(size - 1))
1973
1974 static void *
1975 mmapForLinker (size_t bytes, nat flags, int fd)
1976 {
1977 void *map_addr = NULL;
1978 void *result;
1979 int pagesize, size;
1980 static nat fixed = 0;
1981
1982 IF_DEBUG(linker, debugBelch("mmapForLinker: start\n"));
1983 pagesize = getpagesize();
1984 size = ROUND_UP(bytes, pagesize);
1985
1986 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1987 mmap_again:
1988
1989 if (mmap_32bit_base != 0) {
1990 map_addr = mmap_32bit_base;
1991 }
1992 #endif
1993
1994 IF_DEBUG(linker, debugBelch("mmapForLinker: \tprotection %#0x\n", PROT_EXEC | PROT_READ | PROT_WRITE));
1995 IF_DEBUG(linker, debugBelch("mmapForLinker: \tflags %#0x\n", MAP_PRIVATE | TRY_MAP_32BIT | fixed | flags));
1996 result = mmap(map_addr, size, PROT_EXEC|PROT_READ|PROT_WRITE,
1997 MAP_PRIVATE|TRY_MAP_32BIT|fixed|flags, fd, 0);
1998
1999 if (result == MAP_FAILED) {
2000 sysErrorBelch("mmap %" FMT_Word " bytes at %p",(W_)size,map_addr);
2001 errorBelch("Try specifying an address with +RTS -xm<addr> -RTS");
2002 stg_exit(EXIT_FAILURE);
2003 }
2004
2005 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2006 if (mmap_32bit_base != 0) {
2007 if (result == map_addr) {
2008 mmap_32bit_base = (StgWord8*)map_addr + size;
2009 } else {
2010 if ((W_)result > 0x80000000) {
2011 // oops, we were given memory over 2Gb
2012 #if defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS)
2013 // Some platforms require MAP_FIXED. This is normally
2014 // a bad idea, because MAP_FIXED will overwrite
2015 // existing mappings.
2016 munmap(result,size);
2017 fixed = MAP_FIXED;
2018 goto mmap_again;
2019 #else
2020 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);
2021 #endif
2022 } else {
2023 // hmm, we were given memory somewhere else, but it's
2024 // still under 2Gb so we can use it. Next time, ask
2025 // for memory right after the place we just got some
2026 mmap_32bit_base = (StgWord8*)result + size;
2027 }
2028 }
2029 } else {
2030 if ((W_)result > 0x80000000) {
2031 // oops, we were given memory over 2Gb
2032 // ... try allocating memory somewhere else?;
2033 debugTrace(DEBUG_linker,"MAP_32BIT didn't work; gave us %lu bytes at 0x%p", bytes, result);
2034 munmap(result, size);
2035
2036 // Set a base address and try again... (guess: 1Gb)
2037 mmap_32bit_base = (void*)0x40000000;
2038 goto mmap_again;
2039 }
2040 }
2041 #endif
2042
2043 IF_DEBUG(linker, debugBelch("mmapForLinker: mapped %" FMT_Word " bytes starting at %p\n", (W_)size, result));
2044 IF_DEBUG(linker, debugBelch("mmapForLinker: done\n"));
2045 return result;
2046 }
2047 #endif // USE_MMAP
2048
2049 static ObjectCode*
2050 mkOc( pathchar *path, char *image, int imageSize,
2051 char *archiveMemberName
2052 #ifndef USE_MMAP
2053 #ifdef darwin_HOST_OS
2054 , int misalignment
2055 #endif
2056 #endif
2057 ) {
2058 ObjectCode* oc;
2059
2060 IF_DEBUG(linker, debugBelch("mkOc: start\n"));
2061 oc = stgMallocBytes(sizeof(ObjectCode), "loadArchive(oc)");
2062
2063 # if defined(OBJFORMAT_ELF)
2064 oc->formatName = "ELF";
2065 # elif defined(OBJFORMAT_PEi386)
2066 oc->formatName = "PEi386";
2067 # elif defined(OBJFORMAT_MACHO)
2068 oc->formatName = "Mach-O";
2069 # else
2070 stgFree(oc);
2071 barf("loadObj: not implemented on this platform");
2072 # endif
2073
2074 oc->image = image;
2075 oc->fileName = pathdup(path);
2076
2077 if (archiveMemberName) {
2078 oc->archiveMemberName = stgMallocBytes( strlen(archiveMemberName)+1, "loadObj" );
2079 strcpy(oc->archiveMemberName, archiveMemberName);
2080 }
2081 else {
2082 oc->archiveMemberName = NULL;
2083 }
2084
2085 oc->fileSize = imageSize;
2086 oc->symbols = NULL;
2087 oc->sections = NULL;
2088 oc->proddables = NULL;
2089
2090 #ifndef USE_MMAP
2091 #ifdef darwin_HOST_OS
2092 oc->misalignment = misalignment;
2093 #endif
2094 #endif
2095
2096 /* chain it onto the list of objects */
2097 oc->next = objects;
2098 objects = oc;
2099
2100 IF_DEBUG(linker, debugBelch("mkOc: done\n"));
2101 return oc;
2102 }
2103
2104 HsInt
2105 loadArchive( pathchar *path )
2106 {
2107 ObjectCode* oc;
2108 char *image;
2109 int memberSize;
2110 FILE *f;
2111 int n;
2112 size_t thisFileNameSize;
2113 char *fileName;
2114 size_t fileNameSize;
2115 int isObject, isGnuIndex;
2116 char tmp[20];
2117 char *gnuFileIndex;
2118 int gnuFileIndexSize;
2119 #if defined(darwin_HOST_OS)
2120 int i;
2121 uint32_t nfat_arch, nfat_offset, cputype, cpusubtype;
2122 #if defined(i386_HOST_ARCH)
2123 const uint32_t mycputype = CPU_TYPE_X86;
2124 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_ALL;
2125 #elif defined(x86_64_HOST_ARCH)
2126 const uint32_t mycputype = CPU_TYPE_X86_64;
2127 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_64_ALL;
2128 #elif defined(powerpc_HOST_ARCH)
2129 const uint32_t mycputype = CPU_TYPE_POWERPC;
2130 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2131 #elif defined(powerpc64_HOST_ARCH)
2132 const uint32_t mycputype = CPU_TYPE_POWERPC64;
2133 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2134 #else
2135 #error Unknown Darwin architecture
2136 #endif
2137 #if !defined(USE_MMAP)
2138 int misalignment;
2139 #endif
2140 #endif
2141
2142 IF_DEBUG(linker, debugBelch("loadArchive: start\n"));
2143 IF_DEBUG(linker, debugBelch("loadArchive: Loading archive `%" PATH_FMT" '\n", path));
2144
2145 if (dynamicGhcPrograms) {
2146 barf("loadArchive called, but using dynamic GHC (%s)", path);
2147 }
2148
2149 gnuFileIndex = NULL;
2150 gnuFileIndexSize = 0;
2151
2152 fileNameSize = 32;
2153 fileName = stgMallocBytes(fileNameSize, "loadArchive(fileName)");
2154
2155 f = pathopen(path, WSTR("rb"));
2156 if (!f)
2157 barf("loadObj: can't read `%s'", path);
2158
2159 /* Check if this is an archive by looking for the magic "!<arch>\n"
2160 * string. Usually, if this fails, we barf and quit. On Darwin however,
2161 * we may have a fat archive, which contains archives for more than
2162 * one architecture. Fat archives start with the magic number 0xcafebabe,
2163 * always stored big endian. If we find a fat_header, we scan through
2164 * the fat_arch structs, searching through for one for our host
2165 * architecture. If a matching struct is found, we read the offset
2166 * of our archive data (nfat_offset) and seek forward nfat_offset bytes
2167 * from the start of the file.
2168 *
2169 * A subtlety is that all of the members of the fat_header and fat_arch
2170 * structs are stored big endian, so we need to call byte order
2171 * conversion functions.
2172 *
2173 * If we find the appropriate architecture in a fat archive, we gobble
2174 * its magic "!<arch>\n" string and continue processing just as if
2175 * we had a single architecture archive.
2176 */
2177
2178 n = fread ( tmp, 1, 8, f );
2179 if (n != 8)
2180 barf("loadArchive: Failed reading header from `%s'", path);
2181 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2182
2183 #if defined(darwin_HOST_OS)
2184 /* Not a standard archive, look for a fat archive magic number: */
2185 if (ntohl(*(uint32_t *)tmp) == FAT_MAGIC) {
2186 nfat_arch = ntohl(*(uint32_t *)(tmp + 4));
2187 IF_DEBUG(linker, debugBelch("loadArchive: found a fat archive containing %d architectures\n", nfat_arch));
2188 nfat_offset = 0;
2189
2190 for (i = 0; i < (int)nfat_arch; i++) {
2191 /* search for the right arch */
2192 n = fread( tmp, 1, 20, f );
2193 if (n != 8)
2194 barf("loadArchive: Failed reading arch from `%s'", path);
2195 cputype = ntohl(*(uint32_t *)tmp);
2196 cpusubtype = ntohl(*(uint32_t *)(tmp + 4));
2197
2198 if (cputype == mycputype && cpusubtype == mycpusubtype) {
2199 IF_DEBUG(linker, debugBelch("loadArchive: found my archive in a fat archive\n"));
2200 nfat_offset = ntohl(*(uint32_t *)(tmp + 8));
2201 break;
2202 }
2203 }
2204
2205 if (nfat_offset == 0) {
2206 barf ("loadArchive: searched %d architectures, but no host arch found", (int)nfat_arch);
2207 }
2208 else {
2209 n = fseek( f, nfat_offset, SEEK_SET );
2210 if (n != 0)
2211 barf("loadArchive: Failed to seek to arch in `%s'", path);
2212 n = fread ( tmp, 1, 8, f );
2213 if (n != 8)
2214 barf("loadArchive: Failed reading header from `%s'", path);
2215 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2216 barf("loadArchive: couldn't find archive in `%s' at offset %d", path, nfat_offset);
2217 }
2218 }
2219 }
2220 else {
2221 barf("loadArchive: Neither an archive, nor a fat archive: `%s'", path);
2222 }
2223
2224 #else
2225 barf("loadArchive: Not an archive: `%s'", path);
2226 #endif
2227 }
2228
2229 IF_DEBUG(linker, debugBelch("loadArchive: loading archive contents\n"));
2230
2231 while(1) {
2232 n = fread ( fileName, 1, 16, f );
2233 if (n != 16) {
2234 if (feof(f)) {
2235 IF_DEBUG(linker, debugBelch("loadArchive: EOF while reading from '%" PATH_FMT "'\n", path));
2236 break;
2237 }
2238 else {
2239 barf("loadArchive: Failed reading file name from `%s'", path);
2240 }
2241 }
2242
2243 #if defined(darwin_HOST_OS)
2244 if (strncmp(fileName, "!<arch>\n", 8) == 0) {
2245 IF_DEBUG(linker, debugBelch("loadArchive: found the start of another archive, breaking\n"));
2246 break;
2247 }
2248 #endif
2249
2250 n = fread ( tmp, 1, 12, f );
2251 if (n != 12)
2252 barf("loadArchive: Failed reading mod time from `%s'", path);
2253 n = fread ( tmp, 1, 6, f );
2254 if (n != 6)
2255 barf("loadArchive: Failed reading owner from `%s'", path);
2256 n = fread ( tmp, 1, 6, f );
2257 if (n != 6)
2258 barf("loadArchive: Failed reading group from `%s'", path);
2259 n = fread ( tmp, 1, 8, f );
2260 if (n != 8)
2261 barf("loadArchive: Failed reading mode from `%s'", path);
2262 n = fread ( tmp, 1, 10, f );
2263 if (n != 10)
2264 barf("loadArchive: Failed reading size from `%s'", path);
2265 tmp[10] = '\0';
2266 for (n = 0; isdigit(tmp[n]); n++);
2267 tmp[n] = '\0';
2268 memberSize = atoi(tmp);
2269
2270 IF_DEBUG(linker, debugBelch("loadArchive: size of this archive member is %d\n", memberSize));
2271 n = fread ( tmp, 1, 2, f );
2272 if (n != 2)
2273 barf("loadArchive: Failed reading magic from `%s'", path);
2274 if (strncmp(tmp, "\x60\x0A", 2) != 0)
2275 barf("loadArchive: Failed reading magic from `%s' at %ld. Got %c%c",
2276 path, ftell(f), tmp[0], tmp[1]);
2277
2278 isGnuIndex = 0;
2279 /* Check for BSD-variant large filenames */
2280 if (0 == strncmp(fileName, "#1/", 3)) {
2281 fileName[16] = '\0';
2282 if (isdigit(fileName[3])) {
2283 for (n = 4; isdigit(fileName[n]); n++);
2284 fileName[n] = '\0';
2285 thisFileNameSize = atoi(fileName + 3);
2286 memberSize -= thisFileNameSize;
2287 if (thisFileNameSize >= fileNameSize) {
2288 /* Double it to avoid potentially continually
2289 increasing it by 1 */
2290 fileNameSize = thisFileNameSize * 2;
2291 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2292 }
2293 n = fread ( fileName, 1, thisFileNameSize, f );
2294 if (n != (int)thisFileNameSize) {
2295 barf("loadArchive: Failed reading filename from `%s'",
2296 path);
2297 }
2298 fileName[thisFileNameSize] = 0;
2299
2300 /* On OS X at least, thisFileNameSize is the size of the
2301 fileName field, not the length of the fileName
2302 itself. */
2303 thisFileNameSize = strlen(fileName);
2304 }
2305 else {
2306 barf("loadArchive: BSD-variant filename size not found while reading filename from `%s'", path);
2307 }
2308 }
2309 /* Check for GNU file index file */
2310 else if (0 == strncmp(fileName, "//", 2)) {
2311 fileName[0] = '\0';
2312 thisFileNameSize = 0;
2313 isGnuIndex = 1;
2314 }
2315 /* Check for a file in the GNU file index */
2316 else if (fileName[0] == '/') {
2317 if (isdigit(fileName[1])) {
2318 int i;
2319
2320 for (n = 2; isdigit(fileName[n]); n++);
2321 fileName[n] = '\0';
2322 n = atoi(fileName + 1);
2323
2324 if (gnuFileIndex == NULL) {
2325 barf("loadArchive: GNU-variant filename without an index while reading from `%s'", path);
2326 }
2327 if (n < 0 || n > gnuFileIndexSize) {
2328 barf("loadArchive: GNU-variant filename offset %d out of range [0..%d] while reading filename from `%s'", n, gnuFileIndexSize, path);
2329 }
2330 if (n != 0 && gnuFileIndex[n - 1] != '\n') {
2331 barf("loadArchive: GNU-variant filename offset %d invalid (range [0..%d]) while reading filename from `%s'", n, gnuFileIndexSize, path);
2332 }
2333 for (i = n; gnuFileIndex[i] != '/'; i++);
2334 thisFileNameSize = i - n;
2335 if (thisFileNameSize >= fileNameSize) {
2336 /* Double it to avoid potentially continually
2337 increasing it by 1 */
2338 fileNameSize = thisFileNameSize * 2;
2339 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2340 }
2341 memcpy(fileName, gnuFileIndex + n, thisFileNameSize);
2342 fileName[thisFileNameSize] = '\0';
2343 }
2344 else if (fileName[1] == ' ') {
2345 fileName[0] = '\0';
2346 thisFileNameSize = 0;
2347 }
2348 else {
2349 barf("loadArchive: GNU-variant filename offset not found while reading filename from `%s'", path);
2350 }
2351 }
2352 /* Finally, the case where the filename field actually contains
2353 the filename */
2354 else {
2355 /* GNU ar terminates filenames with a '/', this allowing
2356 spaces in filenames. So first look to see if there is a
2357 terminating '/'. */
2358 for (thisFileNameSize = 0;
2359 thisFileNameSize < 16;
2360 thisFileNameSize++) {
2361 if (fileName[thisFileNameSize] == '/') {
2362 fileName[thisFileNameSize] = '\0';
2363 break;
2364 }
2365 }
2366 /* If we didn't find a '/', then a space teminates the
2367 filename. Note that if we don't find one, then
2368 thisFileNameSize ends up as 16, and we already have the
2369 '\0' at the end. */
2370 if (thisFileNameSize == 16) {
2371 for (thisFileNameSize = 0;
2372 thisFileNameSize < 16;
2373 thisFileNameSize++) {
2374 if (fileName[thisFileNameSize] == ' ') {
2375 fileName[thisFileNameSize] = '\0';
2376 break;
2377 }
2378 }
2379 }
2380 }
2381
2382 IF_DEBUG(linker,
2383 debugBelch("loadArchive: Found member file `%s'\n", fileName));
2384
2385 isObject = thisFileNameSize >= 2
2386 && fileName[thisFileNameSize - 2] == '.'
2387 && fileName[thisFileNameSize - 1] == 'o';
2388
2389 IF_DEBUG(linker, debugBelch("loadArchive: \tthisFileNameSize = %d\n", (int)thisFileNameSize));
2390 IF_DEBUG(linker, debugBelch("loadArchive: \tisObject = %d\n", isObject));
2391
2392 if (isObject) {
2393 char *archiveMemberName;
2394
2395 IF_DEBUG(linker, debugBelch("loadArchive: Member is an object file...loading...\n"));
2396
2397 /* We can't mmap from the archive directly, as object
2398 files need to be 8-byte aligned but files in .ar
2399 archives are 2-byte aligned. When possible we use mmap
2400 to get some anonymous memory, as on 64-bit platforms if
2401 we use malloc then we can be given memory above 2^32.
2402 In the mmap case we're probably wasting lots of space;
2403 we could do better. */
2404 #if defined(USE_MMAP)
2405 image = mmapForLinker(memberSize, MAP_ANONYMOUS, -1);
2406 #elif defined(mingw32_HOST_OS)
2407 // TODO: We would like to use allocateExec here, but allocateExec
2408 // cannot currently allocate blocks large enough.
2409 {
2410 int offset;
2411 #if defined(x86_64_HOST_ARCH)
2412 /* We get back 8-byte aligned memory (is that guaranteed?), but
2413 the offsets to the sections within the file are all 4 mod 8
2414 (is that guaranteed?). We therefore need to offset the image
2415 by 4, so that all the pointers are 8-byte aligned, so that
2416 pointer tagging works. */
2417 offset = 4;
2418 #else
2419 offset = 0;
2420 #endif
2421 image = VirtualAlloc(NULL, memberSize + offset,
2422 MEM_RESERVE | MEM_COMMIT,
2423 PAGE_EXECUTE_READWRITE);
2424 image += offset;
2425 }
2426 #elif defined(darwin_HOST_OS)
2427 /* See loadObj() */
2428 misalignment = machoGetMisalignment(f);
2429 image = stgMallocBytes(memberSize + misalignment, "loadArchive(image)");
2430 image += misalignment;
2431 #else
2432 image = stgMallocBytes(memberSize, "loadArchive(image)");
2433 #endif
2434 n = fread ( image, 1, memberSize, f );
2435 if (n != memberSize) {
2436 barf("loadArchive: error whilst reading `%s'", path);
2437 }
2438
2439 archiveMemberName = stgMallocBytes(pathlen(path) + thisFileNameSize + 3,
2440 "loadArchive(file)");
2441 sprintf(archiveMemberName, "%" PATH_FMT "(%.*s)",
2442 path, (int)thisFileNameSize, fileName);
2443
2444 oc = mkOc(path, image, memberSize, archiveMemberName
2445 #ifndef USE_MMAP
2446 #ifdef darwin_HOST_OS
2447 , misalignment
2448 #endif
2449 #endif
2450 );
2451
2452 stgFree(archiveMemberName);
2453
2454 if (0 == loadOc(oc)) {
2455 stgFree(fileName);
2456 return 0;
2457 }
2458 }
2459 else if (isGnuIndex) {
2460 if (gnuFileIndex != NULL) {
2461 barf("loadArchive: GNU-variant index found, but already have an index, while reading filename from `%s'", path);
2462 }
2463 IF_DEBUG(linker, debugBelch("loadArchive: Found GNU-variant file index\n"));
2464 #ifdef USE_MMAP
2465 gnuFileIndex = mmapForLinker(memberSize + 1, MAP_ANONYMOUS, -1);
2466 #else
2467 gnuFileIndex = stgMallocBytes(memberSize + 1, "loadArchive(image)");
2468 #endif
2469 n = fread ( gnuFileIndex, 1, memberSize, f );
2470 if (n != memberSize) {
2471 barf("loadArchive: error whilst reading `%s'", path);
2472 }
2473 gnuFileIndex[memberSize] = '/';
2474 gnuFileIndexSize = memberSize;
2475 }
2476 else {
2477 IF_DEBUG(linker, debugBelch("loadArchive: '%s' does not appear to be an object file\n", fileName));
2478 n = fseek(f, memberSize, SEEK_CUR);
2479 if (n != 0)
2480 barf("loadArchive: error whilst seeking by %d in `%s'",
2481 memberSize, path);
2482 }
2483
2484 /* .ar files are 2-byte aligned */
2485 if (memberSize % 2) {
2486 IF_DEBUG(linker, debugBelch("loadArchive: trying to read one pad byte\n"));
2487 n = fread ( tmp, 1, 1, f );
2488 if (n != 1) {
2489 if (feof(f)) {
2490 IF_DEBUG(linker, debugBelch("loadArchive: found EOF while reading one pad byte\n"));
2491 break;
2492 }
2493 else {
2494 barf("loadArchive: Failed reading padding from `%s'", path);
2495 }
2496 }
2497 IF_DEBUG(linker, debugBelch("loadArchive: successfully read one pad byte\n"));
2498 }
2499 IF_DEBUG(linker, debugBelch("loadArchive: reached end of archive loading while loop\n"));
2500 }
2501
2502 fclose(f);
2503
2504 stgFree(fileName);
2505 if (gnuFileIndex != NULL) {
2506 #ifdef USE_MMAP
2507 munmap(gnuFileIndex, gnuFileIndexSize + 1);
2508 #else
2509 stgFree(gnuFileIndex);
2510 #endif
2511 }
2512
2513 IF_DEBUG(linker, debugBelch("loadArchive: done\n"));
2514 return 1;
2515 }
2516
2517 /* -----------------------------------------------------------------------------
2518 * Load an obj (populate the global symbol table, but don't resolve yet)
2519 *
2520 * Returns: 1 if ok, 0 on error.
2521 */
2522 HsInt
2523 loadObj( pathchar *path )
2524 {
2525 ObjectCode* oc;
2526 char *image;
2527 int fileSize;
2528 struct_stat st;
2529 int r;
2530 #ifdef USE_MMAP
2531 int fd;
2532 #else
2533 FILE *f;
2534 # if defined(darwin_HOST_OS)
2535 int misalignment;
2536 # endif
2537 #endif
2538 IF_DEBUG(linker, debugBelch("loadObj %" PATH_FMT "\n", path));
2539
2540 if (dynamicGhcPrograms) {
2541 barf("loadObj called, but using dynamic GHC (%s)", path);
2542 }
2543
2544 initLinker();
2545
2546 /* debugBelch("loadObj %s\n", path ); */
2547
2548 /* Check that we haven't already loaded this object.
2549 Ignore requests to load multiple times */
2550 {
2551 ObjectCode *o;
2552 int is_dup = 0;
2553 for (o = objects; o; o = o->next) {
2554 if (0 == pathcmp(o->fileName, path)) {
2555 is_dup = 1;
2556 break; /* don't need to search further */
2557 }
2558 }
2559 if (is_dup) {
2560 IF_DEBUG(linker, debugBelch(
2561 "GHCi runtime linker: warning: looks like you're trying to load the\n"
2562 "same object file twice:\n"
2563 " %" PATH_FMT "\n"
2564 "GHCi will ignore this, but be warned.\n"
2565 , path));
2566 return 1; /* success */
2567 }
2568 }
2569
2570 r = pathstat(path, &st);
2571 if (r == -1) {
2572 IF_DEBUG(linker, debugBelch("File doesn't exist\n"));
2573 return 0;
2574 }
2575
2576 fileSize = st.st_size;
2577
2578 #ifdef USE_MMAP
2579 /* On many architectures malloc'd memory isn't executable, so we need to use mmap. */
2580
2581 #if defined(openbsd_HOST_OS)
2582 fd = open(path, O_RDONLY, S_IRUSR);
2583 #else
2584 fd = open(path, O_RDONLY);
2585 #endif
2586 if (fd == -1)
2587 barf("loadObj: can't open `%s'", path);
2588
2589 image = mmapForLinker(fileSize, 0, fd);
2590
2591 close(fd);
2592
2593 #else /* !USE_MMAP */
2594 /* load the image into memory */
2595 f = pathopen(path, WSTR("rb"));
2596 if (!f)
2597 barf("loadObj: can't read `%" PATH_FMT "'", path);
2598
2599 # if defined(mingw32_HOST_OS)
2600 // TODO: We would like to use allocateExec here, but allocateExec
2601 // cannot currently allocate blocks large enough.
2602 {
2603 int offset;
2604 #if defined(x86_64_HOST_ARCH)
2605 /* We get back 8-byte aligned memory (is that guaranteed?), but
2606 the offsets to the sections within the file are all 4 mod 8
2607 (is that guaranteed?). We therefore need to offset the image
2608 by 4, so that all the pointers are 8-byte aligned, so that
2609 pointer tagging works. */
2610 offset = 4;
2611 #else
2612 offset = 0;
2613 #endif
2614 image = VirtualAlloc(NULL, fileSize + offset, MEM_RESERVE | MEM_COMMIT,
2615 PAGE_EXECUTE_READWRITE);
2616 image += offset;
2617 }
2618 # elif defined(darwin_HOST_OS)
2619 // In a Mach-O .o file, all sections can and will be misaligned
2620 // if the total size of the headers is not a multiple of the
2621 // desired alignment. This is fine for .o files that only serve
2622 // as input for the static linker, but it's not fine for us,
2623 // as SSE (used by gcc for floating point) and Altivec require
2624 // 16-byte alignment.
2625 // We calculate the correct alignment from the header before
2626 // reading the file, and then we misalign image on purpose so
2627 // that the actual sections end up aligned again.
2628 misalignment = machoGetMisalignment(f);
2629 image = stgMallocBytes(fileSize + misalignment, "loadObj(image)");
2630 image += misalignment;
2631 # else
2632 image = stgMallocBytes(fileSize, "loadObj(image)");
2633 # endif
2634
2635 {
2636 int n;
2637 n = fread ( image, 1, fileSize, f );
2638 if (n != fileSize)
2639 barf("loadObj: error whilst reading `%s'", path);
2640 }
2641 fclose(f);
2642 #endif /* USE_MMAP */
2643
2644 oc = mkOc(path, image, fileSize, NULL
2645 #ifndef USE_MMAP
2646 #ifdef darwin_HOST_OS
2647 , misalignment
2648 #endif
2649 #endif
2650 );
2651
2652 return loadOc(oc);
2653 }
2654
2655 static HsInt
2656 loadOc( ObjectCode* oc ) {
2657 int r;
2658
2659 IF_DEBUG(linker, debugBelch("loadOc: start\n"));
2660
2661 # if defined(OBJFORMAT_MACHO) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH))
2662 r = ocAllocateSymbolExtras_MachO ( oc );
2663 if (!r) {
2664 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_MachO failed\n"));
2665 return r;
2666 }
2667 # elif defined(OBJFORMAT_ELF) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH))
2668 r = ocAllocateSymbolExtras_ELF ( oc );
2669 if (!r) {
2670 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_ELF failed\n"));
2671 return r;
2672 }
2673 #endif
2674
2675 /* verify the in-memory image */
2676 # if defined(OBJFORMAT_ELF)
2677 r = ocVerifyImage_ELF ( oc );
2678 # elif defined(OBJFORMAT_PEi386)
2679 r = ocVerifyImage_PEi386 ( oc );
2680 # elif defined(OBJFORMAT_MACHO)
2681 r = ocVerifyImage_MachO ( oc );
2682 # else
2683 barf("loadObj: no verify method");
2684 # endif
2685 if (!r) {
2686 IF_DEBUG(linker, debugBelch("loadOc: ocVerifyImage_* failed\n"));
2687 return r;
2688 }
2689
2690 /* build the symbol list for this image */
2691 # if defined(OBJFORMAT_ELF)
2692 r = ocGetNames_ELF ( oc );
2693 # elif defined(OBJFORMAT_PEi386)
2694 r = ocGetNames_PEi386 ( oc );
2695 # elif defined(OBJFORMAT_MACHO)
2696 r = ocGetNames_MachO ( oc );
2697 # else
2698 barf("loadObj: no getNames method");
2699 # endif
2700 if (!r) {
2701 IF_DEBUG(linker, debugBelch("loadOc: ocGetNames_* failed\n"));
2702 return r;
2703 }
2704
2705 /* loaded, but not resolved yet */
2706 oc->status = OBJECT_LOADED;
2707 IF_DEBUG(linker, debugBelch("loadOc: done.\n"));
2708
2709 return 1;
2710 }
2711
2712 /* -----------------------------------------------------------------------------
2713 * resolve all the currently unlinked objects in memory
2714 *
2715 * Returns: 1 if ok, 0 on error.
2716 */
2717 HsInt
2718 resolveObjs( void )
2719 {
2720 ObjectCode *oc;
2721 int r;
2722
2723 IF_DEBUG(linker, debugBelch("resolveObjs: start\n"));
2724 initLinker();
2725
2726 for (oc = objects; oc; oc = oc->next) {
2727 if (oc->status != OBJECT_RESOLVED) {
2728 # if defined(OBJFORMAT_ELF)
2729 r = ocResolve_ELF ( oc );
2730 # elif defined(OBJFORMAT_PEi386)
2731 r = ocResolve_PEi386 ( oc );
2732 # elif defined(OBJFORMAT_MACHO)
2733 r = ocResolve_MachO ( oc );
2734 # else
2735 barf("resolveObjs: not implemented on this platform");
2736 # endif
2737 if (!r) { return r; }
2738 oc->status = OBJECT_RESOLVED;
2739 }
2740 }
2741 IF_DEBUG(linker, debugBelch("resolveObjs: done\n"));
2742 return 1;
2743 }
2744
2745 /* -----------------------------------------------------------------------------
2746 * delete an object from the pool
2747 */
2748 HsInt
2749 unloadObj( pathchar *path )
2750 {
2751 ObjectCode *oc, *prev;
2752 HsBool unloadedAnyObj = HS_BOOL_FALSE;
2753
2754 ASSERT(symhash != NULL);
2755 ASSERT(objects != NULL);
2756
2757 initLinker();
2758
2759 prev = NULL;
2760 for (oc = objects; oc; prev = oc, oc = oc->next) {
2761 if (!pathcmp(oc->fileName,path)) {
2762
2763 /* Remove all the mappings for the symbols within this
2764 * object..
2765 */
2766 {
2767 int i;
2768 for (i = 0; i < oc->n_symbols; i++) {
2769 if (oc->symbols[i] != NULL) {
2770 removeStrHashTable(symhash, oc->symbols[i], NULL);
2771 }
2772 }
2773 }
2774
2775 if (prev == NULL) {
2776 objects = oc->next;
2777 } else {
2778 prev->next = oc->next;
2779 }
2780
2781 // We're going to leave this in place, in case there are
2782 // any pointers from the heap into it:
2783 // #ifdef mingw32_HOST_OS
2784 // If uncommenting, note that currently oc->image is
2785 // not the right address to free on Win64, as we added
2786 // 4 bytes of padding at the start
2787 // VirtualFree(oc->image);
2788 // #else
2789 // stgFree(oc->image);
2790 // #endif
2791 stgFree(oc->fileName);
2792 stgFree(oc->archiveMemberName);
2793 stgFree(oc->symbols);
2794 stgFree(oc->sections);
2795 stgFree(oc);
2796
2797 /* This could be a member of an archive so continue
2798 * unloading other members. */
2799 unloadedAnyObj = HS_BOOL_TRUE;
2800 }
2801 }
2802
2803 if (unloadedAnyObj) {
2804 return 1;
2805 }
2806 else {
2807 errorBelch("unloadObj: can't find `%" PATH_FMT "' to unload", path);
2808 return 0;
2809 }
2810 }
2811
2812 /* -----------------------------------------------------------------------------
2813 * Sanity checking. For each ObjectCode, maintain a list of address ranges
2814 * which may be prodded during relocation, and abort if we try and write
2815 * outside any of these.
2816 */
2817 static void
2818 addProddableBlock ( ObjectCode* oc, void* start, int size )
2819 {
2820 ProddableBlock* pb
2821 = stgMallocBytes(sizeof(ProddableBlock), "addProddableBlock");
2822
2823 IF_DEBUG(linker, debugBelch("addProddableBlock: %p %p %d\n", oc, start, size));
2824 ASSERT(size > 0);
2825 pb->start = start;
2826 pb->size = size;
2827 pb->next = oc->proddables;
2828 oc->proddables = pb;
2829 }
2830
2831 static void
2832 checkProddableBlock (ObjectCode *oc, void *addr, size_t size )
2833 {
2834 ProddableBlock* pb;
2835
2836 for (pb = oc->proddables; pb != NULL; pb = pb->next) {
2837 char* s = (char*)(pb->start);
2838 char* e = s + pb->size;
2839 char* a = (char*)addr;
2840 if (a >= s && (a+size) <= e) return;
2841 }
2842 barf("checkProddableBlock: invalid fixup in runtime linker: %p", addr);
2843 }
2844
2845 /* -----------------------------------------------------------------------------
2846 * Section management.
2847 */
2848 static void
2849 addSection ( ObjectCode* oc, SectionKind kind,
2850 void* start, void* end )
2851 {
2852 Section* s = stgMallocBytes(sizeof(Section), "addSection");
2853 s->start = start;
2854 s->end = end;
2855 s->kind = kind;
2856 s->next = oc->sections;
2857 oc->sections = s;
2858
2859 IF_DEBUG(linker, debugBelch("addSection: %p-%p (size %lld), kind %d\n",
2860 start, ((char*)end)-1, ((long long)(size_t)end) - ((long long)(size_t)start) + 1, kind ));
2861 }
2862
2863
2864 /* --------------------------------------------------------------------------
2865 * Symbol Extras.
2866 * This is about allocating a small chunk of memory for every symbol in the
2867 * object file. We make sure that the SymboLExtras are always "in range" of
2868 * limited-range PC-relative instructions on various platforms by allocating
2869 * them right next to the object code itself.
2870 */
2871
2872 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2873 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2874
2875 /*
2876 ocAllocateSymbolExtras
2877
2878 Allocate additional space at the end of the object file image to make room
2879 for jump islands (powerpc, x86_64, arm) and GOT entries (x86_64).
2880
2881 PowerPC relative branch instructions have a 24 bit displacement field.
2882 As PPC code is always 4-byte-aligned, this yields a +-32MB range.
2883 If a particular imported symbol is outside this range, we have to redirect
2884 the jump to a short piece of new code that just loads the 32bit absolute
2885 address and jumps there.
2886 On x86_64, PC-relative jumps and PC-relative accesses to the GOT are limited
2887 to 32 bits (+-2GB).
2888
2889 This function just allocates space for one SymbolExtra for every
2890 undefined symbol in the object file. The code for the jump islands is
2891 filled in by makeSymbolExtra below.
2892 */
2893
2894 static int ocAllocateSymbolExtras( ObjectCode* oc, int count, int first )
2895 {
2896 #ifdef USE_MMAP
2897 int pagesize, n, m;
2898 #endif
2899 int aligned;
2900 #ifndef USE_MMAP
2901 int misalignment = 0;
2902 #ifdef darwin_HOST_OS
2903 misalignment = oc->misalignment;
2904 #endif
2905 #endif
2906
2907 if( count > 0 )
2908 {
2909 // round up to the nearest 4
2910 aligned = (oc->fileSize + 3) & ~3;
2911
2912 #ifdef USE_MMAP
2913 pagesize = getpagesize();
2914 n = ROUND_UP( oc->fileSize, pagesize );
2915 m = ROUND_UP( aligned + sizeof (SymbolExtra) * count, pagesize );
2916
2917 /* we try to use spare space at the end of the last page of the
2918 * image for the jump islands, but if there isn't enough space
2919 * then we have to map some (anonymously, remembering MAP_32BIT).
2920 */
2921 if( m > n ) // we need to allocate more pages
2922 {
2923 if (USE_CONTIGUOUS_MMAP)
2924 {
2925 /* Keep image and symbol_extras contiguous */
2926 void *new = mmapForLinker(n + (sizeof(SymbolExtra) * count),
2927 MAP_ANONYMOUS, -1);
2928 if (new)
2929 {
2930 memcpy(new, oc->image, oc->fileSize);
2931 munmap(oc->image, n);
2932 oc->image = new;
2933 oc->symbol_extras = (SymbolExtra *) (oc->image + n);
2934 }
2935 else
2936 oc->symbol_extras = NULL;
2937 }
2938 else
2939 {
2940 oc->symbol_extras = mmapForLinker(sizeof(SymbolExtra) * count,
2941 MAP_ANONYMOUS, -1);
2942 }
2943 }
2944 else
2945 {
2946 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
2947 }
2948 #else
2949 oc->image -= misalignment;
2950 oc->image = stgReallocBytes( oc->image,
2951 misalignment +
2952 aligned + sizeof (SymbolExtra) * count,
2953 "ocAllocateSymbolExtras" );
2954 oc->image += misalignment;
2955
2956 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
2957 #endif /* USE_MMAP */
2958
2959 memset( oc->symbol_extras, 0, sizeof (SymbolExtra) * count );
2960 }
2961 else
2962 oc->symbol_extras = NULL;
2963
2964 oc->first_symbol_extra = first;
2965 oc->n_symbol_extras = count;
2966
2967 return 1;
2968 }
2969
2970 #endif
2971 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2972
2973 #if defined(arm_HOST_ARCH)
2974
2975 static void
2976 ocFlushInstructionCache( ObjectCode *oc )
2977 {
2978 // Object code
2979 __clear_cache(oc->image, oc->image + oc->fileSize);
2980 // Jump islands
2981 __clear_cache(oc->symbol_extras, &oc->symbol_extras[oc->n_symbol_extras]);
2982 }
2983
2984 #endif
2985
2986 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
2987 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2988
2989 static SymbolExtra* makeSymbolExtra( ObjectCode* oc,
2990 unsigned long symbolNumber,
2991 unsigned long target )
2992 {
2993 SymbolExtra *extra;
2994
2995 ASSERT( symbolNumber >= oc->first_symbol_extra
2996 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
2997
2998 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
2999
3000 #ifdef powerpc_HOST_ARCH
3001 // lis r12, hi16(target)
3002 extra->jumpIsland.lis_r12 = 0x3d80;
3003 extra->jumpIsland.hi_addr = target >> 16;
3004
3005 // ori r12, r12, lo16(target)
3006 extra->jumpIsland.ori_r12_r12 = 0x618c;
3007 extra->jumpIsland.lo_addr = target & 0xffff;
3008
3009 // mtctr r12
3010 extra->jumpIsland.mtctr_r12 = 0x7d8903a6;
3011
3012 // bctr
3013 extra->jumpIsland.bctr = 0x4e800420;
3014 #endif
3015 #ifdef x86_64_HOST_ARCH
3016 // jmp *-14(%rip)
3017 static uint8_t jmp[] = { 0xFF, 0x25, 0xF2, 0xFF, 0xFF, 0xFF };
3018 extra->addr = target;
3019 memcpy(extra->jumpIsland, jmp, 6);
3020 #endif
3021
3022 return extra;
3023 }
3024
3025 #endif
3026 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3027
3028 #ifdef arm_HOST_ARCH
3029 static SymbolExtra* makeArmSymbolExtra( ObjectCode* oc,
3030 unsigned long symbolNumber,
3031 unsigned long target,
3032 int fromThumb,
3033 int toThumb )
3034 {
3035 SymbolExtra *extra;
3036
3037 ASSERT( symbolNumber >= oc->first_symbol_extra
3038 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3039
3040 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3041
3042 // Make sure instruction mode bit is set properly
3043 if (toThumb)
3044 target |= 1;
3045 else
3046 target &= ~1;
3047
3048 if (!fromThumb) {
3049 // In ARM encoding:
3050 // movw r12, #0
3051 // movt r12, #0
3052 // bx r12
3053 uint32_t code[] = { 0xe300c000, 0xe340c000, 0xe12fff1c };
3054
3055 // Patch lower half-word into movw
3056 code[0] |= ((target>>12) & 0xf) << 16;
3057 code[0] |= target & 0xfff;
3058 // Patch upper half-word into movt
3059 target >>= 16;
3060 code[1] |= ((target>>12) & 0xf) << 16;
3061 code[1] |= target & 0xfff;
3062
3063 memcpy(extra->jumpIsland, code, 12);
3064
3065 } else {
3066 // In Thumb encoding:
3067 // movw r12, #0
3068 // movt r12, #0
3069 // bx r12
3070 uint16_t code[] = { 0xf240, 0x0c00,
3071 0xf2c0, 0x0c00,
3072 0x4760 };
3073
3074 // Patch lower half-word into movw
3075 code[0] |= (target>>12) & 0xf;
3076 code[0] |= ((target>>11) & 0x1) << 10;
3077 code[1] |= ((target>>8) & 0x7) << 12;
3078 code[1] |= target & 0xff;
3079 // Patch upper half-word into movt
3080 target >>= 16;
3081 code[2] |= (target>>12) & 0xf;
3082 code[2] |= ((target>>11) & 0x1) << 10;
3083 code[3] |= ((target>>8) & 0x7) << 12;
3084 code[3] |= target & 0xff;
3085
3086 memcpy(extra->jumpIsland, code, 10);
3087 }
3088
3089 return extra;
3090 }
3091 #endif // arm_HOST_ARCH
3092
3093 /* --------------------------------------------------------------------------
3094 * PowerPC specifics (instruction cache flushing)
3095 * ------------------------------------------------------------------------*/
3096
3097 #ifdef powerpc_HOST_ARCH
3098 /*
3099 ocFlushInstructionCache
3100
3101 Flush the data & instruction caches.
3102 Because the PPC has split data/instruction caches, we have to
3103 do that whenever we modify code at runtime.
3104 */
3105
3106 static void
3107 ocFlushInstructionCacheFrom(void* begin, size_t length)
3108 {
3109 size_t n = (length + 3) / 4;
3110 unsigned long* p = begin;
3111
3112 while (n--)
3113 {
3114 __asm__ volatile ( "dcbf 0,%0\n\t"
3115 "sync\n\t"
3116 "icbi 0,%0"
3117 :
3118 : "r" (p)
3119 );
3120 p++;
3121 }
3122 __asm__ volatile ( "sync\n\t"
3123 "isync"
3124 );
3125 }
3126
3127 static void
3128 ocFlushInstructionCache( ObjectCode *oc )
3129 {
3130 /* The main object code */
3131 ocFlushInstructionCacheFrom(oc->image
3132 #ifdef darwin_HOST_OS
3133 + oc->misalignment
3134 #endif
3135 , oc->fileSize);
3136
3137 /* Jump Islands */
3138 ocFlushInstructionCacheFrom(oc->symbol_extras, sizeof(SymbolExtra) * oc->n_symbol_extras);
3139 }
3140 #endif /* powerpc_HOST_ARCH */
3141
3142
3143 /* --------------------------------------------------------------------------
3144 * PEi386 specifics (Win32 targets)
3145 * ------------------------------------------------------------------------*/
3146
3147 /* The information for this linker comes from
3148 Microsoft Portable Executable
3149 and Common Object File Format Specification
3150 revision 5.1 January 1998
3151 which SimonM says comes from the MS Developer Network CDs.
3152
3153 It can be found there (on older CDs), but can also be found
3154 online at:
3155
3156 http://www.microsoft.com/hwdev/hardware/PECOFF.asp
3157
3158 (this is Rev 6.0 from February 1999).
3159
3160 Things move, so if that fails, try searching for it via
3161
3162 http://www.google.com/search?q=PE+COFF+specification
3163
3164 The ultimate reference for the PE format is the Winnt.h
3165 header file that comes with the Platform SDKs; as always,
3166 implementations will drift wrt their documentation.
3167
3168 A good background article on the PE format is Matt Pietrek's
3169 March 1994 article in Microsoft System Journal (MSJ)
3170 (Vol.9, No. 3): "Peering Inside the PE: A Tour of the
3171 Win32 Portable Executable File Format." The info in there
3172 has recently been updated in a two part article in
3173 MSDN magazine, issues Feb and March 2002,
3174 "Inside Windows: An In-Depth Look into the Win32 Portable
3175 Executable File Format"
3176
3177 John Levine's book "Linkers and Loaders" contains useful
3178 info on PE too.
3179 */
3180
3181
3182 #if defined(OBJFORMAT_PEi386)
3183
3184
3185
3186 typedef unsigned char UChar;
3187 typedef unsigned short UInt16;
3188 typedef unsigned int UInt32;
3189 typedef int Int32;
3190 typedef unsigned long long int UInt64;
3191
3192
3193 typedef
3194 struct {
3195 UInt16 Machine;
3196 UInt16 NumberOfSections;
3197 UInt32 TimeDateStamp;
3198 UInt32 PointerToSymbolTable;
3199 UInt32 NumberOfSymbols;
3200 UInt16 SizeOfOptionalHeader;
3201 UInt16 Characteristics;
3202 }
3203 COFF_header;
3204
3205 #define sizeof_COFF_header 20
3206
3207
3208 typedef
3209 struct {
3210 UChar Name[8];
3211 UInt32 VirtualSize;
3212 UInt32 VirtualAddress;
3213 UInt32 SizeOfRawData;
3214 UInt32 PointerToRawData;
3215 UInt32 PointerToRelocations;
3216 UInt32 PointerToLinenumbers;
3217 UInt16 NumberOfRelocations;
3218 UInt16 NumberOfLineNumbers;
3219 UInt32 Characteristics;
3220 }
3221 COFF_section;
3222
3223 #define sizeof_COFF_section 40
3224
3225
3226 typedef
3227 struct {
3228 UChar Name[8];
3229 UInt32 Value;
3230 UInt16 SectionNumber;
3231 UInt16 Type;
3232 UChar StorageClass;
3233 UChar NumberOfAuxSymbols;
3234 }
3235 COFF_symbol;
3236
3237 #define sizeof_COFF_symbol 18
3238
3239
3240 typedef
3241 struct {
3242 UInt32 VirtualAddress;
3243 UInt32 SymbolTableIndex;
3244 UInt16 Type;
3245 }
3246 COFF_reloc;
3247
3248 #define sizeof_COFF_reloc 10
3249
3250
3251 /* From PE spec doc, section 3.3.2 */
3252 /* Note use of MYIMAGE_* since IMAGE_* are already defined in
3253 windows.h -- for the same purpose, but I want to know what I'm
3254 getting, here. */
3255 #define MYIMAGE_FILE_RELOCS_STRIPPED 0x0001
3256 #define MYIMAGE_FILE_EXECUTABLE_IMAGE 0x0002
3257 #define MYIMAGE_FILE_DLL 0x2000
3258 #define MYIMAGE_FILE_SYSTEM 0x1000
3259 #define MYIMAGE_FILE_BYTES_REVERSED_HI 0x8000
3260 #define MYIMAGE_FILE_BYTES_REVERSED_LO 0x0080
3261 #define MYIMAGE_FILE_32BIT_MACHINE 0x0100
3262
3263 /* From PE spec doc, section 5.4.2 and 5.4.4 */
3264 #define MYIMAGE_SYM_CLASS_EXTERNAL 2
3265 #define MYIMAGE_SYM_CLASS_STATIC 3
3266 #define MYIMAGE_SYM_UNDEFINED 0
3267
3268 /* From PE spec doc, section 4.1 */
3269 #define MYIMAGE_SCN_CNT_CODE 0x00000020
3270 #define MYIMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
3271 #define MYIMAGE_SCN_LNK_NRELOC_OVFL 0x01000000
3272
3273 /* From PE spec doc, section 5.2.1 */
3274 #define MYIMAGE_REL_I386_DIR32 0x0006
3275 #define MYIMAGE_REL_I386_REL32 0x0014
3276
3277
3278 /* We use myindex to calculate array addresses, rather than
3279 simply doing the normal subscript thing. That's because
3280 some of the above structs have sizes which are not
3281 a whole number of words. GCC rounds their sizes up to a
3282 whole number of words, which means that the address calcs
3283 arising from using normal C indexing or pointer arithmetic
3284 are just plain wrong. Sigh.
3285 */
3286 static UChar *
3287 myindex ( int scale, void* base, int index )
3288 {
3289 return
3290 ((UChar*)base) + scale * index;
3291 }
3292
3293
3294 static void
3295 printName ( UChar* name, UChar* strtab )
3296 {
3297 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3298 UInt32 strtab_offset = * (UInt32*)(name+4);
3299 debugBelch("%s", strtab + strtab_offset );
3300 } else {
3301 int i;
3302 for (i = 0; i < 8; i++) {
3303 if (name[i] == 0) break;
3304 debugBelch("%c", name[i] );
3305 }
3306 }
3307 }
3308
3309
3310 static void
3311 copyName ( UChar* name, UChar* strtab, UChar* dst, int dstSize )
3312 {
3313 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3314 UInt32 strtab_offset = * (UInt32*)(name+4);
3315 strncpy ( (char*)dst, (char*)strtab+strtab_offset, dstSize );
3316 dst[dstSize-1] = 0;
3317 } else {
3318 int i = 0;
3319 while (1) {
3320 if (i >= 8) break;
3321 if (name[i] == 0) break;
3322 dst[i] = name[i];
3323 i++;
3324 }
3325 dst[i] = 0;
3326 }
3327 }
3328
3329
3330 static UChar *
3331 cstring_from_COFF_symbol_name ( UChar* name, UChar* strtab )
3332 {
3333 UChar* newstr;
3334 /* If the string is longer than 8 bytes, look in the
3335 string table for it -- this will be correctly zero terminated.
3336 */
3337 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3338 UInt32 strtab_offset = * (UInt32*)(name+4);
3339 return ((UChar*)strtab) + strtab_offset;
3340 }
3341 /* Otherwise, if shorter than 8 bytes, return the original,
3342 which by defn is correctly terminated.
3343 */
3344 if (name[7]==0) return name;
3345 /* The annoying case: 8 bytes. Copy into a temporary
3346 (XXX which is never freed ...)
3347 */
3348 newstr = stgMallocBytes(9, "cstring_from_COFF_symbol_name");
3349 ASSERT(newstr);
3350 strncpy((char*)newstr,(char*)name,8);
3351 newstr[8] = 0;
3352 return newstr;
3353 }
3354
3355 /* Getting the name of a section is mildly tricky, so we make a
3356 function for it. Sadly, in one case we have to copy the string
3357 (when it is exactly 8 bytes long there's no trailing '\0'), so for
3358 consistency we *always* copy the string; the caller must free it
3359 */
3360 static char *
3361 cstring_from_section_name (UChar* name, UChar* strtab)
3362 {
3363 char *newstr;
3364
3365 if (name[0]=='/') {
3366 int strtab_offset = strtol((char*)name+1,NULL,10);
3367 int len = strlen(((char*)strtab) + strtab_offset);
3368
3369 newstr = stgMallocBytes(len+1, "cstring_from_section_symbol_name");
3370 strcpy((char*)newstr, (char*)((UChar*)strtab) + strtab_offset);
3371 return newstr;
3372 }
3373 else
3374 {
3375 newstr = stgMallocBytes(9, "cstring_from_section_symbol_name");
3376 ASSERT(newstr);
3377 strncpy((char*)newstr,(char*)name,8);
3378 newstr[8] = 0;
3379 return newstr;
3380 }
3381 }
3382
3383 /* Just compares the short names (first 8 chars) */
3384 static COFF_section *
3385 findPEi386SectionCalled ( ObjectCode* oc, UChar* name )
3386 {
3387 int i;
3388 COFF_header* hdr
3389 = (COFF_header*)(oc->image);
3390 COFF_section* sectab
3391 = (COFF_section*) (
3392 ((UChar*)(oc->image))
3393 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3394 );
3395 for (i = 0; i < hdr->NumberOfSections; i++) {
3396 UChar* n1;
3397 UChar* n2;
3398 COFF_section* section_i
3399 = (COFF_section*)
3400 myindex ( sizeof_COFF_section, sectab, i );
3401 n1 = (UChar*) &(section_i->Name);
3402 n2 = name;
3403 if (n1[0]==n2[0] && n1[1]==n2[1] && n1[2]==n2[2] &&
3404 n1[3]==n2[3] && n1[4]==n2[4] && n1[5]==n2[5] &&
3405 n1[6]==n2[6] && n1[7]==n2[7])
3406 return section_i;
3407 }
3408
3409 return NULL;
3410 }
3411
3412 static void
3413 zapTrailingAtSign ( UChar* sym )
3414 {
3415 # define my_isdigit(c) ((c) >= '0' && (c) <= '9')
3416 int i, j;
3417 if (sym[0] == 0) return;
3418 i = 0;
3419 while (sym[i] != 0) i++;
3420 i--;
3421 j = i;
3422 while (j > 0 && my_isdigit(sym[j])) j--;
3423 if (j > 0 && sym[j] == '@' && j != i) sym[j] = 0;
3424 # undef my_isdigit
3425 }
3426
3427 static void *
3428 lookupSymbolInDLLs ( UChar *lbl )
3429 {
3430 OpenedDLL* o_dll;
3431 void *sym;
3432
3433 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
3434 /* debugBelch("look in %s for %s\n", o_dll->name, lbl); */
3435
3436 if (lbl[0] == '_') {
3437 /* HACK: if the name has an initial underscore, try stripping
3438 it off & look that up first. I've yet to verify whether there's
3439 a Rule that governs whether an initial '_' *should always* be
3440 stripped off when mapping from import lib name to the DLL name.
3441 */
3442 sym = GetProcAddress(o_dll->instance, (char*)(lbl+1));
3443 if (sym != NULL) {
3444 /*debugBelch("found %s in %s\n", lbl+1,o_dll->name);*/
3445 return sym;
3446 }
3447 }
3448 sym = GetProcAddress(o_dll->instance, (char*)lbl);
3449 if (sym != NULL) {
3450 /*debugBelch("found %s in %s\n", lbl,o_dll->name);*/
3451 return sym;
3452 }
3453 }
3454 return NULL;
3455 }
3456
3457
3458 static int
3459 ocVerifyImage_PEi386 ( ObjectCode* oc )
3460 {
3461 int i;
3462 UInt32 j, noRelocs;
3463 COFF_header* hdr;
3464 COFF_section* sectab;
3465 COFF_symbol* symtab;
3466 UChar* strtab;
3467 /* debugBelch("\nLOADING %s\n", oc->fileName); */
3468 hdr = (COFF_header*)(oc->image);
3469 sectab = (COFF_section*) (
3470 ((UChar*)(oc->image))
3471 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3472 );
3473 symtab = (COFF_symbol*) (
3474 ((UChar*)(oc->image))
3475 + hdr->PointerToSymbolTable
3476 );
3477 strtab = ((UChar*)symtab)
3478 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3479
3480 #if defined(i386_HOST_ARCH)
3481 if (hdr->Machine != 0x14c) {
3482 errorBelch("%" PATH_FMT ": Not x86 PEi386", oc->fileName);
3483 return 0;
3484 }
3485 #elif defined(x86_64_HOST_ARCH)
3486 if (hdr->Machine != 0x8664) {
3487 errorBelch("%" PATH_FMT ": Not x86_64 PEi386", oc->fileName);
3488 return 0;
3489 }
3490 #else
3491 errorBelch("PEi386 not supported on this arch");
3492 #endif
3493
3494 if (hdr->SizeOfOptionalHeader != 0) {
3495 errorBelch("%" PATH_FMT ": PEi386 with nonempty optional header", oc->fileName);
3496 return 0;
3497 }
3498 if ( /* (hdr->Characteristics & MYIMAGE_FILE_RELOCS_STRIPPED) || */
3499 (hdr->Characteristics & MYIMAGE_FILE_EXECUTABLE_IMAGE) ||
3500 (hdr->Characteristics & MYIMAGE_FILE_DLL) ||
3501 (hdr->Characteristics & MYIMAGE_FILE_SYSTEM) ) {
3502 errorBelch("%" PATH_FMT ": Not a PEi386 object file", oc->fileName);
3503 return 0;
3504 }
3505 if ( (hdr->Characteristics & MYIMAGE_FILE_BYTES_REVERSED_HI)
3506 /* || !(hdr->Characteristics & MYIMAGE_FILE_32BIT_MACHINE) */ ) {
3507 errorBelch("%" PATH_FMT ": Invalid PEi386 word size or endiannness: %d",
3508 oc->fileName,
3509 (int)(hdr->Characteristics));
3510 return 0;
3511 }
3512 /* If the string table size is way crazy, this might indicate that
3513 there are more than 64k relocations, despite claims to the
3514 contrary. Hence this test. */
3515 /* debugBelch("strtab size %d\n", * (UInt32*)strtab); */
3516 #if 0
3517 if ( (*(UInt32*)strtab) > 600000 ) {
3518 /* Note that 600k has no special significance other than being
3519 big enough to handle the almost-2MB-sized lumps that
3520 constitute HSwin32*.o. */
3521 debugBelch("PEi386 object has suspiciously large string table; > 64k relocs?");
3522 return 0;
3523 }
3524 #endif
3525
3526 /* No further verification after this point; only debug printing. */
3527 i = 0;
3528 IF_DEBUG(linker, i=1);
3529 if (i == 0) return 1;
3530
3531 debugBelch( "sectab offset = %" FMT_Int "\n", ((UChar*)sectab) - ((UChar*)hdr) );
3532 debugBelch( "symtab offset = %" FMT_Int "\n", ((UChar*)symtab) - ((UChar*)hdr) );
3533 debugBelch( "strtab offset = %" FMT_Int "\n", ((UChar*)strtab) - ((UChar*)hdr) );
3534
3535 debugBelch("\n" );
3536 debugBelch( "Machine: 0x%x\n", (UInt32)(hdr->Machine) );
3537 debugBelch( "# sections: %d\n", (UInt32)(hdr->NumberOfSections) );
3538 debugBelch( "time/date: 0x%x\n", (UInt32)(hdr->TimeDateStamp) );
3539 debugBelch( "symtab offset: %d\n", (UInt32)(hdr->PointerToSymbolTable) );
3540 debugBelch( "# symbols: %d\n", (UInt32)(hdr->NumberOfSymbols) );
3541 debugBelch( "sz of opt hdr: %d\n", (UInt32)(hdr->SizeOfOptionalHeader) );
3542 debugBelch( "characteristics: 0x%x\n", (UInt32)(hdr->Characteristics) );
3543
3544 /* Print the section table. */
3545 debugBelch("\n" );
3546 for (i = 0; i < hdr->NumberOfSections; i++) {
3547 COFF_reloc* reltab;
3548 COFF_section* sectab_i
3549 = (COFF_section*)
3550 myindex ( sizeof_COFF_section, sectab, i );
3551 debugBelch(
3552 "\n"
3553 "section %d\n"
3554 " name `",
3555 i
3556 );
3557 printName ( sectab_i->Name, strtab );
3558 debugBelch(
3559 "'\n"
3560 " vsize %d\n"
3561 " vaddr %d\n"
3562 " data sz %d\n"
3563 " data off %d\n"
3564 " num rel %d\n"
3565 " off rel %d\n"
3566 " ptr raw 0x%x\n",
3567 sectab_i->VirtualSize,
3568 sectab_i->VirtualAddress,
3569 sectab_i->SizeOfRawData,
3570 sectab_i->PointerToRawData,
3571 sectab_i->NumberOfRelocations,
3572 sectab_i->PointerToRelocations,
3573 sectab_i->PointerToRawData
3574 );
3575 reltab = (COFF_reloc*) (
3576 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
3577 );
3578
3579 if ( sectab_i->Characteristics & MYIMAGE_SCN_LNK_NRELOC_OVFL ) {
3580 /* If the relocation field (a short) has overflowed, the
3581 * real count can be found in the first reloc entry.
3582 *
3583 * See Section 4.1 (last para) of the PE spec (rev6.0).
3584 */
3585 COFF_reloc* rel = (COFF_reloc*)
3586 myindex ( sizeof_COFF_reloc, reltab, 0 );
3587 noRelocs = rel->VirtualAddress;
3588 j = 1;
3589 } else {
3590 noRelocs = sectab_i->NumberOfRelocations;
3591 j = 0;
3592 }
3593
3594 for (; j < noRelocs; j++) {
3595 COFF_symbol* sym;
3596 COFF_reloc* rel = (COFF_reloc*)
3597 myindex ( sizeof_COFF_reloc, reltab, j );
3598 debugBelch(
3599 " type 0x%-4x vaddr 0x%-8x name `",
3600 (UInt32)rel->Type,
3601 rel->VirtualAddress );
3602 sym = (COFF_symbol*)
3603 myindex ( sizeof_COFF_symbol, symtab, rel->SymbolTableIndex );
3604 /* Hmm..mysterious looking offset - what's it for? SOF */
3605 printName ( sym->Name, strtab -10 );
3606 debugBelch("'\n" );
3607 }
3608
3609 debugBelch("\n" );
3610 }
3611 debugBelch("\n" );
3612 debugBelch("string table has size 0x%x\n", * (UInt32*)strtab );
3613 debugBelch("---START of string table---\n");
3614 for (i = 4; i < *(Int32*)strtab; i++) {
3615 if (strtab[i] == 0)
3616 debugBelch("\n"); else
3617 debugBelch("%c", strtab[i] );
3618 }
3619 debugBelch("--- END of string table---\n");
3620
3621 debugBelch("\n" );
3622 i = 0;
3623 while (1) {
3624 COFF_symbol* symtab_i;
3625 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
3626 symtab_i = (COFF_symbol*)
3627 myindex ( sizeof_COFF_symbol, symtab, i );
3628 debugBelch(
3629 "symbol %d\n"
3630 " name `",
3631 i
3632 );
3633 printName ( symtab_i->Name, strtab );
3634 debugBelch(
3635 "'\n"
3636 " value 0x%x\n"
3637 " 1+sec# %d\n"
3638 " type 0x%x\n"
3639 " sclass 0x%x\n"
3640 " nAux %d\n",
3641 symtab_i->Value,
3642 (Int32)(symtab_i->SectionNumber),
3643 (UInt32)symtab_i->Type,
3644 (UInt32)symtab_i->StorageClass,
3645 (UInt32)symtab_i->NumberOfAuxSymbols
3646 );
3647 i += symtab_i->NumberOfAuxSymbols;
3648 i++;
3649 }
3650
3651 debugBelch("\n" );
3652 return 1;
3653 }
3654
3655
3656 static int
3657 ocGetNames_PEi386 ( ObjectCode* oc )
3658 {
3659 COFF_header* hdr;
3660 COFF_section* sectab;
3661 COFF_symbol* symtab;
3662 UChar* strtab;
3663
3664 UChar* sname;
3665 void* addr;
3666 int i;
3667
3668 hdr = (COFF_header*)(oc->image);
3669 sectab = (COFF_section*) (
3670 ((UChar*)(oc->image))
3671 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3672 );
3673 symtab = (COFF_symbol*) (
3674 ((UChar*)(oc->image))
3675 + hdr->PointerToSymbolTable
3676 );
3677 strtab = ((UChar*)(oc->image))
3678 + hdr->PointerToSymbolTable
3679 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3680
3681 /* Allocate space for any (local, anonymous) .bss sections. */
3682
3683 for (i = 0; i < hdr->NumberOfSections; i++) {
3684 UInt32 bss_sz;
3685 UChar* zspace;
3686 COFF_section* sectab_i
3687 = (COFF_section*)
3688 myindex ( sizeof_COFF_section, sectab, i );
3689
3690 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3691
3692 if (0 != strcmp(secname, ".bss")) {
3693 stgFree(secname);
3694 continue;
3695 }
3696
3697 stgFree(secname);
3698
3699 /* sof 10/05: the PE spec text isn't too clear regarding what
3700 * the SizeOfRawData field is supposed to hold for object
3701 * file sections containing just uninitialized data -- for executables,
3702 * it is supposed to be zero; unclear what it's supposed to be
3703 * for object files. However, VirtualSize is guaranteed to be
3704 * zero for object files, which definitely suggests that SizeOfRawData
3705 * will be non-zero (where else would the size of this .bss section be
3706 * stored?) Looking at the COFF_section info for incoming object files,
3707 * this certainly appears to be the case.
3708 *
3709 * => I suspect we've been incorrectly handling .bss sections in (relocatable)
3710 * object files up until now. This turned out to bite us with ghc-6.4.1's use
3711 * of gcc-3.4.x, which has started to emit initially-zeroed-out local 'static'
3712 * variable decls into to the .bss section. (The specific function in Q which
3713 * triggered this is libraries/base/cbits/dirUtils.c:__hscore_getFolderPath())
3714 */
3715 if (sectab_i->VirtualSize == 0 && sectab_i->SizeOfRawData == 0) continue;
3716 /* This is a non-empty .bss section. Allocate zeroed space for
3717 it, and set its PointerToRawData field such that oc->image +
3718 PointerToRawData == addr_of_zeroed_space. */
3719 bss_sz = sectab_i->VirtualSize;
3720 if ( bss_sz < sectab_i->SizeOfRawData) { bss_sz = sectab_i->SizeOfRawData; }
3721 zspace = stgCallocBytes(1, bss_sz, "ocGetNames_PEi386(anonymous bss)");
3722 sectab_i->PointerToRawData = ((UChar*)zspace) - ((UChar*)(oc->image));
3723 addProddableBlock(oc, zspace, bss_sz);
3724 /* debugBelch("BSS anon section at 0x%x\n", zspace); */
3725 }
3726
3727 /* Copy section information into the ObjectCode. */
3728
3729 for (i = 0; i < hdr->NumberOfSections; i++) {
3730 UChar* start;
3731 UChar* end;
3732 UInt32 sz;
3733
3734 SectionKind kind
3735 = SECTIONKIND_OTHER;
3736 COFF_section* sectab_i
3737 = (COFF_section*)
3738 myindex ( sizeof_COFF_section, sectab, i );
3739
3740 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3741
3742 IF_DEBUG(linker, debugBelch("section name = %s\n", secname ));
3743
3744 # if 0
3745 /* I'm sure this is the Right Way to do it. However, the
3746 alternative of testing the sectab_i->Name field seems to
3747 work ok with Cygwin.
3748 */
3749 if (sectab_i->Characteristics & MYIMAGE_SCN_CNT_CODE ||
3750 sectab_i->Characteristics & MYIMAGE_SCN_CNT_INITIALIZED_DATA)
3751 kind = SECTIONKIND_CODE_OR_RODATA;
3752 # endif
3753
3754 if (0==strcmp(".text",(char*)secname) ||
3755 0==strcmp(".text.startup",(char*)secname) ||
3756 0==strcmp(".rdata",(char*)secname)||
3757 0==strcmp(".rodata",(char*)secname))
3758 kind = SECTIONKIND_CODE_OR_RODATA;
3759 if (0==strcmp(".data",(char*)secname) ||
3760 0==strcmp(".bss",(char*)secname))
3761 kind = SECTIONKIND_RWDATA;
3762
3763 ASSERT(sectab_i->SizeOfRawData == 0 || sectab_i->VirtualSize == 0);
3764 sz = sectab_i->SizeOfRawData;
3765 if (sz < sectab_i->VirtualSize) sz = sectab_i->VirtualSize;
3766
3767 start = ((UChar*)(oc->image)) + sectab_i->PointerToRawData;
3768 end = start + sz - 1;
3769
3770 if (kind == SECTIONKIND_OTHER
3771 /* Ignore sections called which contain stabs debugging
3772 information. */
3773 && 0 != strcmp(".stab", (char*)secname)
3774 && 0 != strcmp(".stabstr", (char*)secname)
3775 /* Ignore sections called which contain exception information. */
3776 && 0 != strcmp(".pdata", (char*)secname)
3777 && 0 != strcmp(".xdata", (char*)secname)
3778 /* ignore constructor section for now */
3779 && 0 != strcmp(".ctors", (char*)secname)
3780 /* ignore section generated from .ident */
3781 && 0!= strncmp(".debug", (char*)secname, 6)
3782 /* ignore unknown section that appeared in gcc 3.4.5(?) */
3783 && 0!= strcmp(".reloc", (char*)secname)
3784 && 0 != strcmp(".rdata$zzz", (char*)secname)
3785 ) {
3786 errorBelch("Unknown PEi386 section name `%s' (while processing: %" PATH_FMT")", secname, oc->fileName);
3787 stgFree(secname);
3788 return 0;
3789 }
3790
3791 if (kind != SECTIONKIND_OTHER && end >= start) {
3792 if ((((size_t)(start)) % sizeof(void *)) != 0) {
3793 barf("Misaligned section: %p", start);
3794 }
3795
3796 addSection(oc, kind, start, end);
3797 addProddableBlock(oc, start, end - start + 1);
3798 }
3799
3800 stgFree(secname);
3801 }
3802
3803 /* Copy exported symbols into the ObjectCode. */
3804
3805 oc->n_symbols = hdr->NumberOfSymbols;
3806 oc->symbols = stgMallocBytes(oc->n_symbols * sizeof(char*),
3807 "ocGetNames_PEi386(oc->symbols)");
3808 /* Call me paranoid; I don't care. */
3809 for (i = 0; i < oc->n_symbols; i++)
3810 oc->symbols[i] = NULL;
3811
3812 i = 0;
3813 while (1) {
3814 COFF_symbol* symtab_i;
3815 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
3816 symtab_i = (COFF_symbol*)
3817 myindex ( sizeof_COFF_symbol, symtab, i );
3818
3819 addr = NULL;
3820
3821 if (symtab_i->StorageClass == MYIMAGE_SYM_CLASS_EXTERNAL
3822 && symtab_i->SectionNumber != MYIMAGE_SYM_UNDEFINED) {
3823 /* This symbol is global and defined, viz, exported */
3824 /* for MYIMAGE_SYMCLASS_EXTERNAL
3825 && !MYIMAGE_SYM_UNDEFINED,
3826 the address of the symbol is:
3827 address of relevant section + offset in section
3828 */
3829 COFF_section* sectabent
3830 = (COFF_section*) myindex ( sizeof_COFF_section,
3831 sectab,
3832 symtab_i->SectionNumber-1 );
3833 addr = ((UChar*)(oc->image))
3834 + (sectabent->PointerToRawData
3835 + symtab_i->Value);
3836 }
3837 else
3838 if (symtab_i->SectionNumber == MYIMAGE_SYM_UNDEFINED
3839 && symtab_i->Value > 0) {
3840 /* This symbol isn't in any section at all, ie, global bss.
3841 Allocate zeroed space for it. */
3842 addr = stgCallocBytes(1, symtab_i->Value,
3843 "ocGetNames_PEi386(non-anonymous bss)");
3844 addSection(oc, SECTIONKIND_RWDATA, addr,
3845 ((UChar*)addr) + symtab_i->Value - 1);
3846 addProddableBlock(oc, addr, symtab_i->Value);
3847 /* debugBelch("BSS section at 0x%x\n", addr); */
3848 }
3849
3850 if (addr != NULL ) {
3851 sname = cstring_from_COFF_symbol_name ( symtab_i->Name, strtab );
3852 /* debugBelch("addSymbol %p `%s \n", addr,sname); */
3853 IF_DEBUG(linker, debugBelch("addSymbol %p `%s'\n", addr,sname);)
3854 ASSERT(i >= 0 && i < oc->n_symbols);
3855 /* cstring_from_COFF_symbol_name always succeeds. */
3856 oc->symbols[i] = (char*)sname;
3857 ghciInsertStrHashTable(oc->fileName, symhash, (char*)sname, addr);
3858 } else {
3859 # if 0
3860 debugBelch(
3861 "IGNORING symbol %d\n"
3862 " name `",
3863 i
3864 );
3865 printName ( symtab_i->Name, strtab );
3866 debugBelch(
3867 "'\n"
3868 " value 0x%x\n"
3869 " 1+sec# %d\n"
3870 " type 0x%x\n"
3871 " sclass 0x%x\n"
3872 " nAux %d\n",
3873 symtab_i->Value,
3874 (Int32)(symtab_i->SectionNumber),
3875 (UInt32)symtab_i->Type,
3876 (UInt32)symtab_i->StorageClass,
3877 (UInt32)symtab_i->NumberOfAuxSymbols
3878 );
3879 # endif
3880 }
3881
3882 i += symtab_i->NumberOfAuxSymbols;
3883 i++;
3884 }
3885
3886 return 1;
3887 }
3888
3889
3890 static int
3891 ocResolve_PEi386 ( ObjectCode* oc )
3892 {
3893 COFF_header* hdr;
3894 COFF_section* sectab;
3895 COFF_symbol* symtab;
3896 UChar* strtab;
3897
3898 UInt32 A;
3899 size_t S;
3900 void * pP;
3901
3902 int i;
3903 UInt32 j, noRelocs;
3904
3905 /* ToDo: should be variable-sized? But is at least safe in the
3906 sense of buffer-overrun-proof. */
3907 UChar symbol[1000];
3908 /* debugBelch("resolving for %s\n", oc->fileName); */
3909
3910 hdr = (COFF_header*)(oc->image);
3911 sectab = (COFF_section*) (
3912 ((UChar*)(oc->image))
3913 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3914 );
3915 symtab = (COFF_symbol*) (
3916 ((UChar*)(oc->image))
3917 + hdr->PointerToSymbolTable
3918 );
3919 strtab = ((UChar*)(oc->image))
3920 + hdr->PointerToSymbolTable
3921 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3922
3923 for (i = 0; i < hdr->NumberOfSections; i++) {
3924 COFF_section* sectab_i
3925 = (COFF_section*)
3926 myindex ( sizeof_COFF_section, sectab, i );
3927 COFF_reloc* reltab
3928 = (COFF_reloc*) (
3929 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
3930 );
3931
3932 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3933
3934 /* Ignore sections called which contain stabs debugging
3935 information. */
3936 if (0 == strcmp(".stab", (char*)secname)
3937 || 0 == strcmp(".stabstr", (char*)secname)
3938 || 0 == strcmp(".pdata", (char*)secname)
3939 || 0 == strcmp(".xdata", (char*)secname)
3940 || 0 == strcmp(".ctors", (char*)secname)
3941 || 0 == strncmp(".debug", (char*)secname, 6)
3942 || 0 == strcmp(".rdata$zzz", (char*)secname)) {
3943 stgFree(secname);
3944 continue;
3945 }
3946
3947 stgFree(secname);
3948
3949 if ( sectab_i->Characteristics & MYIMAGE_SCN_LNK_NRELOC_OVFL ) {
3950 /* If the relocation field (a short) has overflowed, the
3951 * real count can be found in the first reloc entry.
3952 *
3953 * See Section 4.1 (last para) of the PE spec (rev6.0).
3954 *
3955 * Nov2003 update: the GNU linker still doesn't correctly
3956 * handle the generation of relocatable object files with
3957 * overflown relocations. Hence the output to warn of potential
3958 * troubles.
3959 */
3960 COFF_reloc* rel = (COFF_reloc*)
3961 myindex ( sizeof_COFF_reloc, reltab, 0 );
3962 noRelocs = rel->VirtualAddress;
3963
3964 /* 10/05: we now assume (and check for) a GNU ld that is capable
3965 * of handling object files with (>2^16) of relocs.
3966 */
3967 #if 0
3968 debugBelch("WARNING: Overflown relocation field (# relocs found: %u)\n",
3969 noRelocs);
3970 #endif
3971 j = 1;
3972 } else {
3973 noRelocs = sectab_i->NumberOfRelocations;
3974 j = 0;
3975 }
3976
3977 for (; j < noRelocs; j++) {
3978 COFF_symbol* sym;
3979 COFF_reloc* reltab_j
3980 = (COFF_reloc*)
3981 myindex ( sizeof_COFF_reloc, reltab, j );
3982
3983 /* the location to patch */
3984 pP = (
3985 ((UChar*)(oc->image))
3986 + (sectab_i->PointerToRawData
3987 + reltab_j->VirtualAddress
3988 - sectab_i->VirtualAddress )
3989 );
3990 /* the existing contents of pP */
3991 A = *(UInt32*)pP;
3992 /* the symbol to connect to */
3993 sym = (COFF_symbol*)
3994 myindex ( sizeof_COFF_symbol,
3995 symtab, reltab_j->SymbolTableIndex );
3996 IF_DEBUG(linker,
3997 debugBelch(
3998 "reloc sec %2d num %3d: type 0x%-4x "
3999 "vaddr 0x%-8x name `",
4000 i, j,
4001 (UInt32)reltab_j->Type,
4002 reltab_j->VirtualAddress );
4003 printName ( sym->Name, strtab );
4004 debugBelch("'\n" ));
4005
4006 if (sym->StorageClass == MYIMAGE_SYM_CLASS_STATIC) {
4007 COFF_section* section_sym
4008 = findPEi386SectionCalled ( oc, sym->Name );
4009 if (!section_sym) {
4010 errorBelch("%" PATH_FMT ": can't find section `%s'", oc->fileName, sym->Name);
4011 return 0;
4012 }
4013 S = ((size_t)(oc->image))