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