Merge branch 'master' into atomics
[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 /* Hash table mapping symbol names to Symbol */
141 static /*Str*/HashTable *symhash;
142
143 /* Hash table mapping symbol names to StgStablePtr */
144 static /*Str*/HashTable *stablehash;
145
146 /* List of currently loaded objects */
147 ObjectCode *objects = NULL; /* initially empty */
148
149 /* List of objects that have been unloaded via unloadObj(), but are waiting
150 to be actually freed via checkUnload() */
151 ObjectCode *unloaded_objects = NULL; /* initially empty */
152
153 static HsInt loadOc( ObjectCode* oc );
154 static ObjectCode* mkOc( pathchar *path, char *image, int imageSize,
155 char *archiveMemberName
156 #ifndef USE_MMAP
157 #ifdef darwin_HOST_OS
158 , int misalignment
159 #endif
160 #endif
161 );
162
163 // Use wchar_t for pathnames on Windows (#5697)
164 #if defined(mingw32_HOST_OS)
165 #define pathcmp wcscmp
166 #define pathlen wcslen
167 #define pathopen _wfopen
168 #define pathstat _wstat
169 #define struct_stat struct _stat
170 #define open wopen
171 #define WSTR(s) L##s
172 #define PATH_FMT "S"
173 #else
174 #define pathcmp strcmp
175 #define pathlen strlen
176 #define pathopen fopen
177 #define pathstat stat
178 #define struct_stat struct stat
179 #define WSTR(s) s
180 #define PATH_FMT "s"
181 #endif
182
183 static pathchar* pathdup(pathchar *path)
184 {
185 pathchar *ret;
186 #if defined(mingw32_HOST_OS)
187 ret = wcsdup(path);
188 #else
189 /* sigh, strdup() isn't a POSIX function, so do it the long way */
190 ret = stgMallocBytes( strlen(path)+1, "loadObj" );
191 strcpy(ret, path);
192 #endif
193 return ret;
194 }
195
196
197 #if defined(OBJFORMAT_ELF)
198 static int ocVerifyImage_ELF ( ObjectCode* oc );
199 static int ocGetNames_ELF ( ObjectCode* oc );
200 static int ocResolve_ELF ( ObjectCode* oc );
201 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
202 static int ocAllocateSymbolExtras_ELF ( ObjectCode* oc );
203 #endif
204 #elif defined(OBJFORMAT_PEi386)
205 static int ocVerifyImage_PEi386 ( ObjectCode* oc );
206 static int ocGetNames_PEi386 ( ObjectCode* oc );
207 static int ocResolve_PEi386 ( ObjectCode* oc );
208 static void *lookupSymbolInDLLs ( unsigned char *lbl );
209 static void zapTrailingAtSign ( unsigned char *sym );
210 #elif defined(OBJFORMAT_MACHO)
211 static int ocVerifyImage_MachO ( ObjectCode* oc );
212 static int ocGetNames_MachO ( ObjectCode* oc );
213 static int ocResolve_MachO ( ObjectCode* oc );
214
215 #ifndef USE_MMAP
216 static int machoGetMisalignment( FILE * );
217 #endif
218 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
219 static int ocAllocateSymbolExtras_MachO ( ObjectCode* oc );
220 #endif
221 #ifdef powerpc_HOST_ARCH
222 static void machoInitSymbolsWithoutUnderscore( void );
223 #endif
224 #endif
225
226 static void freeProddableBlocks (ObjectCode *oc);
227
228 /* on x86_64 we have a problem with relocating symbol references in
229 * code that was compiled without -fPIC. By default, the small memory
230 * model is used, which assumes that symbol references can fit in a
231 * 32-bit slot. The system dynamic linker makes this work for
232 * references to shared libraries by either (a) allocating a jump
233 * table slot for code references, or (b) moving the symbol at load
234 * time (and copying its contents, if necessary) for data references.
235 *
236 * We unfortunately can't tell whether symbol references are to code
237 * or data. So for now we assume they are code (the vast majority
238 * are), and allocate jump-table slots. Unfortunately this will
239 * SILENTLY generate crashing code for data references. This hack is
240 * enabled by X86_64_ELF_NONPIC_HACK.
241 *
242 * One workaround is to use shared Haskell libraries. This is
243 * coming. Another workaround is to keep the static libraries but
244 * compile them with -fPIC, because that will generate PIC references
245 * to data which can be relocated. The PIC code is still too green to
246 * do this systematically, though.
247 *
248 * See bug #781
249 * See thread http://www.haskell.org/pipermail/cvs-ghc/2007-September/038458.html
250 *
251 * Naming Scheme for Symbol Macros
252 *
253 * SymI_*: symbol is internal to the RTS. It resides in an object
254 * file/library that is statically.
255 * SymE_*: symbol is external to the RTS library. It might be linked
256 * dynamically.
257 *
258 * Sym*_HasProto : the symbol prototype is imported in an include file
259 * or defined explicitly
260 * Sym*_NeedsProto: the symbol is undefined and we add a dummy
261 * default proto extern void sym(void);
262 */
263 #define X86_64_ELF_NONPIC_HACK 1
264
265 /* Link objects into the lower 2Gb on x86_64. GHC assumes the
266 * small memory model on this architecture (see gcc docs,
267 * -mcmodel=small).
268 *
269 * MAP_32BIT not available on OpenBSD/amd64
270 */
271 #if defined(x86_64_HOST_ARCH) && defined(MAP_32BIT)
272 #define TRY_MAP_32BIT MAP_32BIT
273 #else
274 #define TRY_MAP_32BIT 0
275 #endif
276
277 /*
278 * Due to the small memory model (see above), on x86_64 we have to map
279 * all our non-PIC object files into the low 2Gb of the address space
280 * (why 2Gb and not 4Gb? Because all addresses must be reachable
281 * using a 32-bit signed PC-relative offset). On Linux we can do this
282 * using the MAP_32BIT flag to mmap(), however on other OSs
283 * (e.g. *BSD, see #2063, and also on Linux inside Xen, see #2512), we
284 * can't do this. So on these systems, we have to pick a base address
285 * in the low 2Gb of the address space and try to allocate memory from
286 * there.
287 *
288 * We pick a default address based on the OS, but also make this
289 * configurable via an RTS flag (+RTS -xm)
290 */
291 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
292
293 #if defined(MAP_32BIT)
294 // Try to use MAP_32BIT
295 #define MMAP_32BIT_BASE_DEFAULT 0
296 #else
297 // A guess: 1Gb.
298 #define MMAP_32BIT_BASE_DEFAULT 0x40000000
299 #endif
300
301 static void *mmap_32bit_base = (void *)MMAP_32BIT_BASE_DEFAULT;
302 #endif
303
304 /* MAP_ANONYMOUS is MAP_ANON on some systems, e.g. OpenBSD */
305 #if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
306 #define MAP_ANONYMOUS MAP_ANON
307 #endif
308
309 /* -----------------------------------------------------------------------------
310 * Built-in symbols from the RTS
311 */
312
313 typedef struct _RtsSymbolVal {
314 char *lbl;
315 void *addr;
316 } RtsSymbolVal;
317
318 #define Maybe_Stable_Names SymI_HasProto(stg_mkWeakzh) \
319 SymI_HasProto(stg_mkWeakNoFinalizzerzh) \
320 SymI_HasProto(stg_addCFinalizzerToWeakzh) \
321 SymI_HasProto(stg_makeStableNamezh) \
322 SymI_HasProto(stg_finalizzeWeakzh)
323
324 #if !defined (mingw32_HOST_OS)
325 #define RTS_POSIX_ONLY_SYMBOLS \
326 SymI_HasProto(__hscore_get_saved_termios) \
327 SymI_HasProto(__hscore_set_saved_termios) \
328 SymI_HasProto(shutdownHaskellAndSignal) \
329 SymI_HasProto(signal_handlers) \
330 SymI_HasProto(stg_sig_install) \
331 SymI_HasProto(rtsTimerSignal) \
332 SymI_HasProto(atexit) \
333 SymI_NeedsProto(nocldstop)
334 #endif
335
336 #if defined (cygwin32_HOST_OS)
337 #define RTS_MINGW_ONLY_SYMBOLS /**/
338 /* Don't have the ability to read import libs / archives, so
339 * we have to stupidly list a lot of what libcygwin.a
340 * exports; sigh.
341 */
342 #define RTS_CYGWIN_ONLY_SYMBOLS \
343 SymI_HasProto(regfree) \
344 SymI_HasProto(regexec) \
345 SymI_HasProto(regerror) \
346 SymI_HasProto(regcomp) \
347 SymI_HasProto(__errno) \
348 SymI_HasProto(access) \
349 SymI_HasProto(chmod) \
350 SymI_HasProto(chdir) \
351 SymI_HasProto(close) \
352 SymI_HasProto(creat) \
353 SymI_HasProto(dup) \
354 SymI_HasProto(dup2) \
355 SymI_HasProto(fstat) \
356 SymI_HasProto(fcntl) \
357 SymI_HasProto(getcwd) \
358 SymI_HasProto(getenv) \
359 SymI_HasProto(lseek) \
360 SymI_HasProto(open) \
361 SymI_HasProto(fpathconf) \
362 SymI_HasProto(pathconf) \
363 SymI_HasProto(stat) \
364 SymI_HasProto(pow) \
365 SymI_HasProto(tanh) \
366 SymI_HasProto(cosh) \
367 SymI_HasProto(sinh) \
368 SymI_HasProto(atan) \
369 SymI_HasProto(acos) \
370 SymI_HasProto(asin) \
371 SymI_HasProto(tan) \
372 SymI_HasProto(cos) \
373 SymI_HasProto(sin) \
374 SymI_HasProto(exp) \
375 SymI_HasProto(log) \
376 SymI_HasProto(sqrt) \
377 SymI_HasProto(localtime_r) \
378 SymI_HasProto(gmtime_r) \
379 SymI_HasProto(mktime) \
380 SymI_NeedsProto(_imp___tzname) \
381 SymI_HasProto(gettimeofday) \
382 SymI_HasProto(timezone) \
383 SymI_HasProto(tcgetattr) \
384 SymI_HasProto(tcsetattr) \
385 SymI_HasProto(memcpy) \
386 SymI_HasProto(memmove) \
387 SymI_HasProto(realloc) \
388 SymI_HasProto(malloc) \
389 SymI_HasProto(free) \
390 SymI_HasProto(fork) \
391 SymI_HasProto(lstat) \
392 SymI_HasProto(isatty) \
393 SymI_HasProto(mkdir) \
394 SymI_HasProto(opendir) \
395 SymI_HasProto(readdir) \
396 SymI_HasProto(rewinddir) \
397 SymI_HasProto(closedir) \
398 SymI_HasProto(link) \
399 SymI_HasProto(mkfifo) \
400 SymI_HasProto(pipe) \
401 SymI_HasProto(read) \
402 SymI_HasProto(rename) \
403 SymI_HasProto(rmdir) \
404 SymI_HasProto(select) \
405 SymI_HasProto(system) \
406 SymI_HasProto(write) \
407 SymI_HasProto(strcmp) \
408 SymI_HasProto(strcpy) \
409 SymI_HasProto(strncpy) \
410 SymI_HasProto(strerror) \
411 SymI_HasProto(sigaddset) \
412 SymI_HasProto(sigemptyset) \
413 SymI_HasProto(sigprocmask) \
414 SymI_HasProto(umask) \
415 SymI_HasProto(uname) \
416 SymI_HasProto(unlink) \
417 SymI_HasProto(utime) \
418 SymI_HasProto(waitpid)
419
420 #elif defined(mingw32_HOST_OS)
421 #define RTS_POSIX_ONLY_SYMBOLS /**/
422 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
423
424 #if HAVE_GETTIMEOFDAY
425 #define RTS_MINGW_GETTIMEOFDAY_SYM SymI_NeedsProto(gettimeofday)
426 #else
427 #define RTS_MINGW_GETTIMEOFDAY_SYM /**/
428 #endif
429
430 #if HAVE___MINGW_VFPRINTF
431 #define RTS___MINGW_VFPRINTF_SYM SymI_HasProto(__mingw_vfprintf)
432 #else
433 #define RTS___MINGW_VFPRINTF_SYM /**/
434 #endif
435
436 #if defined(i386_HOST_ARCH)
437 #define RTS_WIN32_ONLY(X) X
438 #else
439 #define RTS_WIN32_ONLY(X) /**/
440 #endif
441
442 #if defined(x86_64_HOST_ARCH)
443 #define RTS_WIN64_ONLY(X) X
444 #else
445 #define RTS_WIN64_ONLY(X) /**/
446 #endif
447
448 /* These are statically linked from the mingw libraries into the ghc
449 executable, so we have to employ this hack. */
450 #define RTS_MINGW_ONLY_SYMBOLS \
451 SymI_HasProto(stg_asyncReadzh) \
452 SymI_HasProto(stg_asyncWritezh) \
453 SymI_HasProto(stg_asyncDoProczh) \
454 SymI_HasProto(getWin32ProgArgv) \
455 SymI_HasProto(setWin32ProgArgv) \
456 SymI_HasProto(memset) \
457 SymI_HasProto(inet_ntoa) \
458 SymI_HasProto(inet_addr) \
459 SymI_HasProto(htonl) \
460 SymI_HasProto(recvfrom) \
461 SymI_HasProto(listen) \
462 SymI_HasProto(bind) \
463 SymI_HasProto(shutdown) \
464 SymI_HasProto(connect) \
465 SymI_HasProto(htons) \
466 SymI_HasProto(ntohs) \
467 SymI_HasProto(getservbyname) \
468 SymI_HasProto(getservbyport) \
469 SymI_HasProto(getprotobynumber) \
470 SymI_HasProto(getprotobyname) \
471 SymI_HasProto(gethostbyname) \
472 SymI_HasProto(gethostbyaddr) \
473 SymI_HasProto(gethostname) \
474 SymI_HasProto(strcpy) \
475 SymI_HasProto(strncpy) \
476 SymI_HasProto(abort) \
477 RTS_WIN32_ONLY(SymI_NeedsProto(_alloca)) \
478 SymI_HasProto(isxdigit) \
479 SymI_HasProto(isupper) \
480 SymI_HasProto(ispunct) \
481 SymI_HasProto(islower) \
482 SymI_HasProto(isspace) \
483 SymI_HasProto(isprint) \
484 SymI_HasProto(isdigit) \
485 SymI_HasProto(iscntrl) \
486 SymI_HasProto(isalpha) \
487 SymI_HasProto(isalnum) \
488 SymI_HasProto(isascii) \
489 RTS___MINGW_VFPRINTF_SYM \
490 SymI_HasProto(strcmp) \
491 SymI_HasProto(memmove) \
492 SymI_HasProto(realloc) \
493 SymI_HasProto(malloc) \
494 SymI_HasProto(pow) \
495 SymI_HasProto(tanh) \
496 SymI_HasProto(cosh) \
497 SymI_HasProto(sinh) \
498 SymI_HasProto(atan) \
499 SymI_HasProto(acos) \
500 SymI_HasProto(asin) \
501 SymI_HasProto(tan) \
502 SymI_HasProto(cos) \
503 SymI_HasProto(sin) \
504 SymI_HasProto(exp) \
505 SymI_HasProto(log) \
506 SymI_HasProto(sqrt) \
507 SymI_HasProto(powf) \
508 SymI_HasProto(tanhf) \
509 SymI_HasProto(coshf) \
510 SymI_HasProto(sinhf) \
511 SymI_HasProto(atanf) \
512 SymI_HasProto(acosf) \
513 SymI_HasProto(asinf) \
514 SymI_HasProto(tanf) \
515 SymI_HasProto(cosf) \
516 SymI_HasProto(sinf) \
517 SymI_HasProto(expf) \
518 SymI_HasProto(logf) \
519 SymI_HasProto(sqrtf) \
520 SymI_HasProto(erf) \
521 SymI_HasProto(erfc) \
522 SymI_HasProto(erff) \
523 SymI_HasProto(erfcf) \
524 SymI_HasProto(memcpy) \
525 SymI_HasProto(rts_InstallConsoleEvent) \
526 SymI_HasProto(rts_ConsoleHandlerDone) \
527 SymI_NeedsProto(mktime) \
528 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___timezone)) \
529 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___tzname)) \
530 RTS_WIN32_ONLY(SymI_NeedsProto(_imp__tzname)) \
531 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___iob)) \
532 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___osver)) \
533 SymI_NeedsProto(localtime) \
534 SymI_NeedsProto(gmtime) \
535 SymI_NeedsProto(opendir) \
536 SymI_NeedsProto(readdir) \
537 SymI_NeedsProto(rewinddir) \
538 RTS_WIN32_ONLY(SymI_NeedsProto(_imp____mb_cur_max)) \
539 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___pctype)) \
540 RTS_WIN32_ONLY(SymI_NeedsProto(__chkstk)) \
541 RTS_WIN64_ONLY(SymI_NeedsProto(__imp___iob_func)) \
542 RTS_WIN64_ONLY(SymI_NeedsProto(___chkstk_ms)) \
543 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_localeconv)) \
544 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_islower)) \
545 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isspace)) \
546 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isxdigit)) \
547 RTS_WIN64_ONLY(SymI_HasProto(close)) \
548 RTS_WIN64_ONLY(SymI_HasProto(read)) \
549 RTS_WIN64_ONLY(SymI_HasProto(dup)) \
550 RTS_WIN64_ONLY(SymI_HasProto(dup2)) \
551 RTS_WIN64_ONLY(SymI_HasProto(write)) \
552 SymI_NeedsProto(getpid) \
553 RTS_WIN64_ONLY(SymI_HasProto(access)) \
554 SymI_HasProto(chmod) \
555 RTS_WIN64_ONLY(SymI_HasProto(creat)) \
556 RTS_WIN64_ONLY(SymI_HasProto(umask)) \
557 SymI_HasProto(unlink) \
558 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__errno)) \
559 RTS_WIN64_ONLY(SymI_NeedsProto(ftruncate64)) \
560 RTS_WIN64_ONLY(SymI_HasProto(setmode)) \
561 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wstat64)) \
562 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__fstat64)) \
563 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wsopen)) \
564 RTS_WIN64_ONLY(SymI_HasProto(__imp__environ)) \
565 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileAttributesA)) \
566 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileInformationByHandle)) \
567 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileType)) \
568 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetLastError)) \
569 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceFrequency)) \
570 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceCounter)) \
571 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetTickCount)) \
572 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WaitForSingleObject)) \
573 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekConsoleInputA)) \
574 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ReadConsoleInputA)) \
575 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekNamedPipe)) \
576 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__isatty)) \
577 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_select)) \
578 RTS_WIN64_ONLY(SymI_HasProto(isatty)) \
579 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__get_osfhandle)) \
580 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetConsoleMode)) \
581 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetConsoleMode)) \
582 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FlushConsoleInputBuffer)) \
583 RTS_WIN64_ONLY(SymI_HasProto(free)) \
584 RTS_WIN64_ONLY(SymI_NeedsProto(raise)) \
585 RTS_WIN64_ONLY(SymI_NeedsProto(_getpid)) \
586 RTS_WIN64_ONLY(SymI_HasProto(getc)) \
587 RTS_WIN64_ONLY(SymI_HasProto(ungetc)) \
588 RTS_WIN64_ONLY(SymI_HasProto(puts)) \
589 RTS_WIN64_ONLY(SymI_HasProto(putc)) \
590 RTS_WIN64_ONLY(SymI_HasProto(putchar)) \
591 RTS_WIN64_ONLY(SymI_HasProto(fputc)) \
592 RTS_WIN64_ONLY(SymI_HasProto(fread)) \
593 RTS_WIN64_ONLY(SymI_HasProto(fwrite)) \
594 RTS_WIN64_ONLY(SymI_HasProto(ferror)) \
595 RTS_WIN64_ONLY(SymI_HasProto(printf)) \
596 RTS_WIN64_ONLY(SymI_HasProto(fprintf)) \
597 RTS_WIN64_ONLY(SymI_HasProto(sprintf)) \
598 RTS_WIN64_ONLY(SymI_HasProto(vsprintf)) \
599 RTS_WIN64_ONLY(SymI_HasProto(sscanf)) \
600 RTS_WIN64_ONLY(SymI_HasProto(ldexp)) \
601 RTS_WIN64_ONLY(SymI_HasProto(strlen)) \
602 RTS_WIN64_ONLY(SymI_HasProto(strnlen)) \
603 RTS_WIN64_ONLY(SymI_HasProto(strchr)) \
604 RTS_WIN64_ONLY(SymI_HasProto(strtol)) \
605 RTS_WIN64_ONLY(SymI_HasProto(strerror)) \
606 RTS_WIN64_ONLY(SymI_HasProto(memchr)) \
607 RTS_WIN64_ONLY(SymI_HasProto(memcmp)) \
608 RTS_WIN64_ONLY(SymI_HasProto(wcscpy)) \
609 RTS_WIN64_ONLY(SymI_HasProto(wcslen)) \
610 RTS_WIN64_ONLY(SymI_HasProto(_lseeki64)) \
611 RTS_WIN64_ONLY(SymI_HasProto(_wchmod)) \
612 RTS_WIN64_ONLY(SymI_HasProto(closesocket)) \
613 RTS_WIN64_ONLY(SymI_HasProto(send)) \
614 RTS_WIN64_ONLY(SymI_HasProto(recv)) \
615 RTS_WIN64_ONLY(SymI_HasProto(bsearch)) \
616 RTS_WIN64_ONLY(SymI_HasProto(CommandLineToArgvW)) \
617 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmap)) \
618 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmapIndirect)) \
619 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleBitmap)) \
620 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBPatternBrushPt)) \
621 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBitmap)) \
622 RTS_WIN64_ONLY(SymI_HasProto(SetBitmapDimensionEx)) \
623 RTS_WIN64_ONLY(SymI_HasProto(GetBitmapDimensionEx)) \
624 RTS_WIN64_ONLY(SymI_HasProto(GetStockObject)) \
625 RTS_WIN64_ONLY(SymI_HasProto(GetObjectW)) \
626 RTS_WIN64_ONLY(SymI_HasProto(DeleteObject)) \
627 RTS_WIN64_ONLY(SymI_HasProto(SetDIBits)) \
628 RTS_WIN64_ONLY(SymI_HasProto(GetDIBits)) \
629 RTS_WIN64_ONLY(SymI_HasProto(CreateSolidBrush)) \
630 RTS_WIN64_ONLY(SymI_HasProto(CreateHatchBrush)) \
631 RTS_WIN64_ONLY(SymI_HasProto(CreatePatternBrush)) \
632 RTS_WIN64_ONLY(SymI_HasProto(CreateFontW)) \
633 RTS_WIN64_ONLY(SymI_HasProto(AngleArc)) \
634 RTS_WIN64_ONLY(SymI_HasProto(Arc)) \
635 RTS_WIN64_ONLY(SymI_HasProto(ArcTo)) \
636 RTS_WIN64_ONLY(SymI_HasProto(BeginPath)) \
637 RTS_WIN64_ONLY(SymI_HasProto(BitBlt)) \
638 RTS_WIN64_ONLY(SymI_HasProto(CancelDC)) \
639 RTS_WIN64_ONLY(SymI_HasProto(Chord)) \
640 RTS_WIN64_ONLY(SymI_HasProto(CloseFigure)) \
641 RTS_WIN64_ONLY(SymI_HasProto(CombineRgn)) \
642 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleDC)) \
643 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgn)) \
644 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgnIndirect)) \
645 RTS_WIN64_ONLY(SymI_HasProto(CreatePen)) \
646 RTS_WIN64_ONLY(SymI_HasProto(CreatePolygonRgn)) \
647 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgn)) \
648 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgnIndirect)) \
649 RTS_WIN64_ONLY(SymI_HasProto(CreateRoundRectRgn)) \
650 RTS_WIN64_ONLY(SymI_HasProto(DeleteDC)) \
651 RTS_WIN64_ONLY(SymI_HasProto(Ellipse)) \
652 RTS_WIN64_ONLY(SymI_HasProto(EndPath)) \
653 RTS_WIN64_ONLY(SymI_HasProto(EqualRgn)) \
654 RTS_WIN64_ONLY(SymI_HasProto(ExtSelectClipRgn)) \
655 RTS_WIN64_ONLY(SymI_HasProto(FillPath)) \
656 RTS_WIN64_ONLY(SymI_HasProto(FillRgn)) \
657 RTS_WIN64_ONLY(SymI_HasProto(FlattenPath)) \
658 RTS_WIN64_ONLY(SymI_HasProto(FrameRgn)) \
659 RTS_WIN64_ONLY(SymI_HasProto(GetArcDirection)) \
660 RTS_WIN64_ONLY(SymI_HasProto(GetBkColor)) \
661 RTS_WIN64_ONLY(SymI_HasProto(GetBkMode)) \
662 RTS_WIN64_ONLY(SymI_HasProto(GetBrushOrgEx)) \
663 RTS_WIN64_ONLY(SymI_HasProto(GetCurrentObject)) \
664 RTS_WIN64_ONLY(SymI_HasProto(GetDCOrgEx)) \
665 RTS_WIN64_ONLY(SymI_HasProto(GetGraphicsMode)) \
666 RTS_WIN64_ONLY(SymI_HasProto(GetMiterLimit)) \
667 RTS_WIN64_ONLY(SymI_HasProto(GetPolyFillMode)) \
668 RTS_WIN64_ONLY(SymI_HasProto(GetRgnBox)) \
669 RTS_WIN64_ONLY(SymI_HasProto(GetStretchBltMode)) \
670 RTS_WIN64_ONLY(SymI_HasProto(GetTextAlign)) \
671 RTS_WIN64_ONLY(SymI_HasProto(GetTextCharacterExtra)) \
672 RTS_WIN64_ONLY(SymI_HasProto(GetTextColor)) \
673 RTS_WIN64_ONLY(SymI_HasProto(GetTextExtentPoint32W)) \
674 RTS_WIN64_ONLY(SymI_HasProto(InvertRgn)) \
675 RTS_WIN64_ONLY(SymI_HasProto(LineTo)) \
676 RTS_WIN64_ONLY(SymI_HasProto(MaskBlt)) \
677 RTS_WIN64_ONLY(SymI_HasProto(MoveToEx)) \
678 RTS_WIN64_ONLY(SymI_HasProto(OffsetRgn)) \
679 RTS_WIN64_ONLY(SymI_HasProto(PaintRgn)) \
680 RTS_WIN64_ONLY(SymI_HasProto(PathToRegion)) \
681 RTS_WIN64_ONLY(SymI_HasProto(Pie)) \
682 RTS_WIN64_ONLY(SymI_HasProto(PlgBlt)) \
683 RTS_WIN64_ONLY(SymI_HasProto(PolyBezier)) \
684 RTS_WIN64_ONLY(SymI_HasProto(PolyBezierTo)) \
685 RTS_WIN64_ONLY(SymI_HasProto(Polygon)) \
686 RTS_WIN64_ONLY(SymI_HasProto(Polyline)) \
687 RTS_WIN64_ONLY(SymI_HasProto(PolylineTo)) \
688 RTS_WIN64_ONLY(SymI_HasProto(PtInRegion)) \
689 RTS_WIN64_ONLY(SymI_HasProto(Rectangle)) \
690 RTS_WIN64_ONLY(SymI_HasProto(RectInRegion)) \
691 RTS_WIN64_ONLY(SymI_HasProto(RestoreDC)) \
692 RTS_WIN64_ONLY(SymI_HasProto(RoundRect)) \
693 RTS_WIN64_ONLY(SymI_HasProto(SaveDC)) \
694 RTS_WIN64_ONLY(SymI_HasProto(SelectClipPath)) \
695 RTS_WIN64_ONLY(SymI_HasProto(SelectClipRgn)) \
696 RTS_WIN64_ONLY(SymI_HasProto(SelectObject)) \
697 RTS_WIN64_ONLY(SymI_HasProto(SelectPalette)) \
698 RTS_WIN64_ONLY(SymI_HasProto(SetArcDirection)) \
699 RTS_WIN64_ONLY(SymI_HasProto(SetBkColor)) \
700 RTS_WIN64_ONLY(SymI_HasProto(SetBkMode)) \
701 RTS_WIN64_ONLY(SymI_HasProto(SetBrushOrgEx)) \
702 RTS_WIN64_ONLY(SymI_HasProto(SetGraphicsMode)) \
703 RTS_WIN64_ONLY(SymI_HasProto(SetMiterLimit)) \
704 RTS_WIN64_ONLY(SymI_HasProto(SetPolyFillMode)) \
705 RTS_WIN64_ONLY(SymI_HasProto(SetStretchBltMode)) \
706 RTS_WIN64_ONLY(SymI_HasProto(SetTextAlign)) \
707 RTS_WIN64_ONLY(SymI_HasProto(SetTextCharacterExtra)) \
708 RTS_WIN64_ONLY(SymI_HasProto(SetTextColor)) \
709 RTS_WIN64_ONLY(SymI_HasProto(StretchBlt)) \
710 RTS_WIN64_ONLY(SymI_HasProto(StrokeAndFillPath)) \
711 RTS_WIN64_ONLY(SymI_HasProto(StrokePath)) \
712 RTS_WIN64_ONLY(SymI_HasProto(TextOutW)) \
713 RTS_WIN64_ONLY(SymI_HasProto(timeGetTime)) \
714 RTS_WIN64_ONLY(SymI_HasProto(WidenPath)) \
715 RTS_WIN64_ONLY(SymI_HasProto(GetFileSecurityW)) \
716 RTS_WIN64_ONLY(SymI_HasProto(RegCloseKey)) \
717 RTS_WIN64_ONLY(SymI_HasProto(RegConnectRegistryW)) \
718 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyExW)) \
719 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyW)) \
720 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteKeyW)) \
721 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteValueW)) \
722 RTS_WIN64_ONLY(SymI_HasProto(RegEnumKeyW)) \
723 RTS_WIN64_ONLY(SymI_HasProto(RegEnumValueW)) \
724 RTS_WIN64_ONLY(SymI_HasProto(RegFlushKey)) \
725 RTS_WIN64_ONLY(SymI_HasProto(RegLoadKeyW)) \
726 RTS_WIN64_ONLY(SymI_HasProto(RegNotifyChangeKeyValue)) \
727 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyExW)) \
728 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyW)) \
729 RTS_WIN64_ONLY(SymI_HasProto(RegQueryInfoKeyW)) \
730 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueExW)) \
731 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueW)) \
732 RTS_WIN64_ONLY(SymI_HasProto(RegReplaceKeyW)) \
733 RTS_WIN64_ONLY(SymI_HasProto(RegRestoreKeyW)) \
734 RTS_WIN64_ONLY(SymI_HasProto(RegSaveKeyW)) \
735 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueExW)) \
736 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueW)) \
737 RTS_WIN64_ONLY(SymI_HasProto(RegUnLoadKeyW)) \
738 RTS_WIN64_ONLY(SymI_NeedsProto(SHGetFolderPathW)) \
739 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetWindowLongPtrW)) \
740 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetWindowLongPtrW)) \
741 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_MenuItemFromPoint)) \
742 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPoint)) \
743 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPointEx)) \
744 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DeleteObject)) \
745 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_UnmapViewOfFile)) \
746 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CloseHandle)) \
747 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FreeLibrary)) \
748 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetMessageW)) \
749 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TranslateMessage)) \
750 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DispatchMessageW)) \
751 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DefWindowProcW)) \
752 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetDIBits)) \
753 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalAlloc)) \
754 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalFree)) \
755 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateFileW)) \
756 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WriteFile)) \
757 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateCompatibleBitmap)) \
758 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SelectObject)) \
759 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_Polygon)) \
760 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FormatMessageW)) \
761 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__localtime64)) \
762 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__tzname)) \
763 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__timezone)) \
764 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreatePipe)) \
765 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetHandleInformation)) \
766 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetStdHandle)) \
767 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetCurrentProcess)) \
768 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DuplicateHandle)) \
769 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateProcessW)) \
770 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TerminateProcess)) \
771 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__open_osfhandle)) \
772 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetExitCodeProcess)) \
773 RTS_MINGW_GETTIMEOFDAY_SYM \
774 SymI_NeedsProto(closedir)
775
776 #else
777 #define RTS_MINGW_ONLY_SYMBOLS /**/
778 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
779 #endif
780
781
782 #if defined(darwin_HOST_OS) && HAVE_PRINTF_LDBLSTUB
783 #define RTS_DARWIN_ONLY_SYMBOLS \
784 SymI_NeedsProto(asprintf$LDBLStub) \
785 SymI_NeedsProto(err$LDBLStub) \
786 SymI_NeedsProto(errc$LDBLStub) \
787 SymI_NeedsProto(errx$LDBLStub) \
788 SymI_NeedsProto(fprintf$LDBLStub) \
789 SymI_NeedsProto(fscanf$LDBLStub) \
790 SymI_NeedsProto(fwprintf$LDBLStub) \
791 SymI_NeedsProto(fwscanf$LDBLStub) \
792 SymI_NeedsProto(printf$LDBLStub) \
793 SymI_NeedsProto(scanf$LDBLStub) \
794 SymI_NeedsProto(snprintf$LDBLStub) \
795 SymI_NeedsProto(sprintf$LDBLStub) \
796 SymI_NeedsProto(sscanf$LDBLStub) \
797 SymI_NeedsProto(strtold$LDBLStub) \
798 SymI_NeedsProto(swprintf$LDBLStub) \
799 SymI_NeedsProto(swscanf$LDBLStub) \
800 SymI_NeedsProto(syslog$LDBLStub) \
801 SymI_NeedsProto(vasprintf$LDBLStub) \
802 SymI_NeedsProto(verr$LDBLStub) \
803 SymI_NeedsProto(verrc$LDBLStub) \
804 SymI_NeedsProto(verrx$LDBLStub) \
805 SymI_NeedsProto(vfprintf$LDBLStub) \
806 SymI_NeedsProto(vfscanf$LDBLStub) \
807 SymI_NeedsProto(vfwprintf$LDBLStub) \
808 SymI_NeedsProto(vfwscanf$LDBLStub) \
809 SymI_NeedsProto(vprintf$LDBLStub) \
810 SymI_NeedsProto(vscanf$LDBLStub) \
811 SymI_NeedsProto(vsnprintf$LDBLStub) \
812 SymI_NeedsProto(vsprintf$LDBLStub) \
813 SymI_NeedsProto(vsscanf$LDBLStub) \
814 SymI_NeedsProto(vswprintf$LDBLStub) \
815 SymI_NeedsProto(vswscanf$LDBLStub) \
816 SymI_NeedsProto(vsyslog$LDBLStub) \
817 SymI_NeedsProto(vwarn$LDBLStub) \
818 SymI_NeedsProto(vwarnc$LDBLStub) \
819 SymI_NeedsProto(vwarnx$LDBLStub) \
820 SymI_NeedsProto(vwprintf$LDBLStub) \
821 SymI_NeedsProto(vwscanf$LDBLStub) \
822 SymI_NeedsProto(warn$LDBLStub) \
823 SymI_NeedsProto(warnc$LDBLStub) \
824 SymI_NeedsProto(warnx$LDBLStub) \
825 SymI_NeedsProto(wcstold$LDBLStub) \
826 SymI_NeedsProto(wprintf$LDBLStub) \
827 SymI_NeedsProto(wscanf$LDBLStub)
828 #else
829 #define RTS_DARWIN_ONLY_SYMBOLS
830 #endif
831
832 #ifndef SMP
833 # define MAIN_CAP_SYM SymI_HasProto(MainCapability)
834 #else
835 # define MAIN_CAP_SYM
836 #endif
837
838 #if !defined(mingw32_HOST_OS)
839 #define RTS_USER_SIGNALS_SYMBOLS \
840 SymI_HasProto(setIOManagerControlFd) \
841 SymI_HasProto(setIOManagerWakeupFd) \
842 SymI_HasProto(ioManagerWakeup) \
843 SymI_HasProto(blockUserSignals) \
844 SymI_HasProto(unblockUserSignals)
845 #else
846 #define RTS_USER_SIGNALS_SYMBOLS \
847 SymI_HasProto(ioManagerWakeup) \
848 SymI_HasProto(sendIOManagerEvent) \
849 SymI_HasProto(readIOManagerEvent) \
850 SymI_HasProto(getIOManagerEvent) \
851 SymI_HasProto(console_handler)
852 #endif
853
854 #define RTS_LIBFFI_SYMBOLS \
855 SymE_NeedsProto(ffi_prep_cif) \
856 SymE_NeedsProto(ffi_call) \
857 SymE_NeedsProto(ffi_type_void) \
858 SymE_NeedsProto(ffi_type_float) \
859 SymE_NeedsProto(ffi_type_double) \
860 SymE_NeedsProto(ffi_type_sint64) \
861 SymE_NeedsProto(ffi_type_uint64) \
862 SymE_NeedsProto(ffi_type_sint32) \
863 SymE_NeedsProto(ffi_type_uint32) \
864 SymE_NeedsProto(ffi_type_sint16) \
865 SymE_NeedsProto(ffi_type_uint16) \
866 SymE_NeedsProto(ffi_type_sint8) \
867 SymE_NeedsProto(ffi_type_uint8) \
868 SymE_NeedsProto(ffi_type_pointer)
869
870 #ifdef TABLES_NEXT_TO_CODE
871 #define RTS_RET_SYMBOLS /* nothing */
872 #else
873 #define RTS_RET_SYMBOLS \
874 SymI_HasProto(stg_enter_ret) \
875 SymI_HasProto(stg_gc_fun_ret) \
876 SymI_HasProto(stg_ap_v_ret) \
877 SymI_HasProto(stg_ap_f_ret) \
878 SymI_HasProto(stg_ap_d_ret) \
879 SymI_HasProto(stg_ap_l_ret) \
880 SymI_HasProto(stg_ap_v16_ret) \
881 SymI_HasProto(stg_ap_n_ret) \
882 SymI_HasProto(stg_ap_p_ret) \
883 SymI_HasProto(stg_ap_pv_ret) \
884 SymI_HasProto(stg_ap_pp_ret) \
885 SymI_HasProto(stg_ap_ppv_ret) \
886 SymI_HasProto(stg_ap_ppp_ret) \
887 SymI_HasProto(stg_ap_pppv_ret) \
888 SymI_HasProto(stg_ap_pppp_ret) \
889 SymI_HasProto(stg_ap_ppppp_ret) \
890 SymI_HasProto(stg_ap_pppppp_ret)
891 #endif
892
893 /* Modules compiled with -ticky may mention ticky counters */
894 /* This list should marry up with the one in $(TOP)/includes/stg/Ticky.h */
895 #define RTS_TICKY_SYMBOLS \
896 SymI_NeedsProto(ticky_entry_ctrs) \
897 SymI_NeedsProto(top_ct) \
898 \
899 SymI_HasProto(ENT_VIA_NODE_ctr) \
900 SymI_HasProto(ENT_STATIC_THK_SINGLE_ctr) \
901 SymI_HasProto(ENT_STATIC_THK_MANY_ctr) \
902 SymI_HasProto(ENT_DYN_THK_SINGLE_ctr) \
903 SymI_HasProto(ENT_DYN_THK_MANY_ctr) \
904 SymI_HasProto(ENT_STATIC_FUN_DIRECT_ctr) \
905 SymI_HasProto(ENT_DYN_FUN_DIRECT_ctr) \
906 SymI_HasProto(ENT_STATIC_CON_ctr) \
907 SymI_HasProto(ENT_DYN_CON_ctr) \
908 SymI_HasProto(ENT_STATIC_IND_ctr) \
909 SymI_HasProto(ENT_DYN_IND_ctr) \
910 SymI_HasProto(ENT_PERM_IND_ctr) \
911 SymI_HasProto(ENT_PAP_ctr) \
912 SymI_HasProto(ENT_AP_ctr) \
913 SymI_HasProto(ENT_AP_STACK_ctr) \
914 SymI_HasProto(ENT_BH_ctr) \
915 SymI_HasProto(ENT_LNE_ctr) \
916 SymI_HasProto(UNKNOWN_CALL_ctr) \
917 SymI_HasProto(SLOW_CALL_fast_v16_ctr) \
918 SymI_HasProto(SLOW_CALL_fast_v_ctr) \
919 SymI_HasProto(SLOW_CALL_fast_f_ctr) \
920 SymI_HasProto(SLOW_CALL_fast_d_ctr) \
921 SymI_HasProto(SLOW_CALL_fast_l_ctr) \
922 SymI_HasProto(SLOW_CALL_fast_n_ctr) \
923 SymI_HasProto(SLOW_CALL_fast_p_ctr) \
924 SymI_HasProto(SLOW_CALL_fast_pv_ctr) \
925 SymI_HasProto(SLOW_CALL_fast_pp_ctr) \
926 SymI_HasProto(SLOW_CALL_fast_ppv_ctr) \
927 SymI_HasProto(SLOW_CALL_fast_ppp_ctr) \
928 SymI_HasProto(SLOW_CALL_fast_pppv_ctr) \
929 SymI_HasProto(SLOW_CALL_fast_pppp_ctr) \
930 SymI_HasProto(SLOW_CALL_fast_ppppp_ctr) \
931 SymI_HasProto(SLOW_CALL_fast_pppppp_ctr) \
932 SymI_HasProto(VERY_SLOW_CALL_ctr) \
933 SymI_HasProto(ticky_slow_call_unevald) \
934 SymI_HasProto(SLOW_CALL_ctr) \
935 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_ctr) \
936 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_CHUNKS_ctr) \
937 SymI_HasProto(KNOWN_CALL_ctr) \
938 SymI_HasProto(KNOWN_CALL_TOO_FEW_ARGS_ctr) \
939 SymI_HasProto(KNOWN_CALL_EXTRA_ARGS_ctr) \
940 SymI_HasProto(SLOW_CALL_FUN_TOO_FEW_ctr) \
941 SymI_HasProto(SLOW_CALL_FUN_CORRECT_ctr) \
942 SymI_HasProto(SLOW_CALL_FUN_TOO_MANY_ctr) \
943 SymI_HasProto(SLOW_CALL_PAP_TOO_FEW_ctr) \
944 SymI_HasProto(SLOW_CALL_PAP_CORRECT_ctr) \
945 SymI_HasProto(SLOW_CALL_PAP_TOO_MANY_ctr) \
946 SymI_HasProto(SLOW_CALL_UNEVALD_ctr) \
947 SymI_HasProto(UPDF_OMITTED_ctr) \
948 SymI_HasProto(UPDF_PUSHED_ctr) \
949 SymI_HasProto(CATCHF_PUSHED_ctr) \
950 SymI_HasProto(UPDF_RCC_PUSHED_ctr) \
951 SymI_HasProto(UPDF_RCC_OMITTED_ctr) \
952 SymI_HasProto(UPD_SQUEEZED_ctr) \
953 SymI_HasProto(UPD_CON_IN_NEW_ctr) \
954 SymI_HasProto(UPD_CON_IN_PLACE_ctr) \
955 SymI_HasProto(UPD_PAP_IN_NEW_ctr) \
956 SymI_HasProto(UPD_PAP_IN_PLACE_ctr) \
957 SymI_HasProto(ALLOC_HEAP_ctr) \
958 SymI_HasProto(ALLOC_HEAP_tot) \
959 SymI_HasProto(HEAP_CHK_ctr) \
960 SymI_HasProto(STK_CHK_ctr) \
961 SymI_HasProto(ALLOC_RTS_ctr) \
962 SymI_HasProto(ALLOC_RTS_tot) \
963 SymI_HasProto(ALLOC_FUN_ctr) \
964 SymI_HasProto(ALLOC_FUN_adm) \
965 SymI_HasProto(ALLOC_FUN_gds) \
966 SymI_HasProto(ALLOC_FUN_slp) \
967 SymI_HasProto(UPD_NEW_IND_ctr) \
968 SymI_HasProto(UPD_NEW_PERM_IND_ctr) \
969 SymI_HasProto(UPD_OLD_IND_ctr) \
970 SymI_HasProto(UPD_OLD_PERM_IND_ctr) \
971 SymI_HasProto(UPD_CAF_BH_UPDATABLE_ctr) \
972 SymI_HasProto(UPD_CAF_BH_SINGLE_ENTRY_ctr) \
973 SymI_HasProto(GC_SEL_ABANDONED_ctr) \
974 SymI_HasProto(GC_SEL_MINOR_ctr) \
975 SymI_HasProto(GC_SEL_MAJOR_ctr) \
976 SymI_HasProto(GC_FAILED_PROMOTION_ctr) \
977 SymI_HasProto(ALLOC_UP_THK_ctr) \
978 SymI_HasProto(ALLOC_SE_THK_ctr) \
979 SymI_HasProto(ALLOC_THK_adm) \
980 SymI_HasProto(ALLOC_THK_gds) \
981 SymI_HasProto(ALLOC_THK_slp) \
982 SymI_HasProto(ALLOC_CON_ctr) \
983 SymI_HasProto(ALLOC_CON_adm) \
984 SymI_HasProto(ALLOC_CON_gds) \
985 SymI_HasProto(ALLOC_CON_slp) \
986 SymI_HasProto(ALLOC_TUP_ctr) \
987 SymI_HasProto(ALLOC_TUP_adm) \
988 SymI_HasProto(ALLOC_TUP_gds) \
989 SymI_HasProto(ALLOC_TUP_slp) \
990 SymI_HasProto(ALLOC_BH_ctr) \
991 SymI_HasProto(ALLOC_BH_adm) \
992 SymI_HasProto(ALLOC_BH_gds) \
993 SymI_HasProto(ALLOC_BH_slp) \
994 SymI_HasProto(ALLOC_PRIM_ctr) \
995 SymI_HasProto(ALLOC_PRIM_adm) \
996 SymI_HasProto(ALLOC_PRIM_gds) \
997 SymI_HasProto(ALLOC_PRIM_slp) \
998 SymI_HasProto(ALLOC_PAP_ctr) \
999 SymI_HasProto(ALLOC_PAP_adm) \
1000 SymI_HasProto(ALLOC_PAP_gds) \
1001 SymI_HasProto(ALLOC_PAP_slp) \
1002 SymI_HasProto(ALLOC_TSO_ctr) \
1003 SymI_HasProto(ALLOC_TSO_adm) \
1004 SymI_HasProto(ALLOC_TSO_gds) \
1005 SymI_HasProto(ALLOC_TSO_slp) \
1006 SymI_HasProto(RET_NEW_ctr) \
1007 SymI_HasProto(RET_OLD_ctr) \
1008 SymI_HasProto(RET_UNBOXED_TUP_ctr) \
1009 SymI_HasProto(RET_SEMI_loads_avoided)
1010
1011
1012 // On most platforms, the garbage collector rewrites references
1013 // to small integer and char objects to a set of common, shared ones.
1014 //
1015 // We don't do this when compiling to Windows DLLs at the moment because
1016 // it doesn't support cross package data references well.
1017 //
1018 #if defined(COMPILING_WINDOWS_DLL)
1019 #define RTS_INTCHAR_SYMBOLS
1020 #else
1021 #define RTS_INTCHAR_SYMBOLS \
1022 SymI_HasProto(stg_CHARLIKE_closure) \
1023 SymI_HasProto(stg_INTLIKE_closure)
1024 #endif
1025
1026
1027 #define RTS_SYMBOLS \
1028 Maybe_Stable_Names \
1029 RTS_TICKY_SYMBOLS \
1030 SymI_HasProto(StgReturn) \
1031 SymI_HasProto(stg_gc_noregs) \
1032 SymI_HasProto(stg_ret_v_info) \
1033 SymI_HasProto(stg_ret_p_info) \
1034 SymI_HasProto(stg_ret_n_info) \
1035 SymI_HasProto(stg_ret_f_info) \
1036 SymI_HasProto(stg_ret_d_info) \
1037 SymI_HasProto(stg_ret_l_info) \
1038 SymI_HasProto(stg_gc_prim_p) \
1039 SymI_HasProto(stg_gc_prim_pp) \
1040 SymI_HasProto(stg_gc_prim_n) \
1041 SymI_HasProto(stg_enter_info) \
1042 SymI_HasProto(__stg_gc_enter_1) \
1043 SymI_HasProto(stg_gc_unpt_r1) \
1044 SymI_HasProto(stg_gc_unbx_r1) \
1045 SymI_HasProto(stg_gc_f1) \
1046 SymI_HasProto(stg_gc_d1) \
1047 SymI_HasProto(stg_gc_l1) \
1048 SymI_HasProto(stg_gc_pp) \
1049 SymI_HasProto(stg_gc_ppp) \
1050 SymI_HasProto(stg_gc_pppp) \
1051 SymI_HasProto(__stg_gc_fun) \
1052 SymI_HasProto(stg_gc_fun_info) \
1053 SymI_HasProto(stg_yield_noregs) \
1054 SymI_HasProto(stg_yield_to_interpreter) \
1055 SymI_HasProto(stg_block_noregs) \
1056 SymI_HasProto(stg_block_takemvar) \
1057 SymI_HasProto(stg_block_readmvar) \
1058 SymI_HasProto(stg_block_putmvar) \
1059 MAIN_CAP_SYM \
1060 SymI_HasProto(MallocFailHook) \
1061 SymI_HasProto(OnExitHook) \
1062 SymI_HasProto(OutOfHeapHook) \
1063 SymI_HasProto(StackOverflowHook) \
1064 SymI_HasProto(addDLL) \
1065 SymI_HasProto(__int_encodeDouble) \
1066 SymI_HasProto(__word_encodeDouble) \
1067 SymI_HasProto(__int_encodeFloat) \
1068 SymI_HasProto(__word_encodeFloat) \
1069 SymI_HasProto(stg_atomicallyzh) \
1070 SymI_HasProto(barf) \
1071 SymI_HasProto(debugBelch) \
1072 SymI_HasProto(errorBelch) \
1073 SymI_HasProto(sysErrorBelch) \
1074 SymI_HasProto(stg_getMaskingStatezh) \
1075 SymI_HasProto(stg_maskAsyncExceptionszh) \
1076 SymI_HasProto(stg_maskUninterruptiblezh) \
1077 SymI_HasProto(stg_catchzh) \
1078 SymI_HasProto(stg_catchRetryzh) \
1079 SymI_HasProto(stg_catchSTMzh) \
1080 SymI_HasProto(stg_checkzh) \
1081 SymI_HasProto(closure_flags) \
1082 SymI_HasProto(cmp_thread) \
1083 SymI_HasProto(createAdjustor) \
1084 SymI_HasProto(stg_decodeDoublezu2Intzh) \
1085 SymI_HasProto(stg_decodeFloatzuIntzh) \
1086 SymI_HasProto(defaultsHook) \
1087 SymI_HasProto(stg_delayzh) \
1088 SymI_HasProto(stg_deRefWeakzh) \
1089 SymI_HasProto(stg_deRefStablePtrzh) \
1090 SymI_HasProto(dirty_MUT_VAR) \
1091 SymI_HasProto(dirty_TVAR) \
1092 SymI_HasProto(stg_forkzh) \
1093 SymI_HasProto(stg_forkOnzh) \
1094 SymI_HasProto(forkProcess) \
1095 SymI_HasProto(forkOS_createThread) \
1096 SymI_HasProto(freeHaskellFunctionPtr) \
1097 SymI_HasProto(getOrSetGHCConcSignalSignalHandlerStore) \
1098 SymI_HasProto(getOrSetGHCConcWindowsPendingDelaysStore) \
1099 SymI_HasProto(getOrSetGHCConcWindowsIOManagerThreadStore) \
1100 SymI_HasProto(getOrSetGHCConcWindowsProddingStore) \
1101 SymI_HasProto(getOrSetSystemEventThreadEventManagerStore) \
1102 SymI_HasProto(getOrSetSystemEventThreadIOManagerThreadStore) \
1103 SymI_HasProto(getOrSetSystemTimerThreadEventManagerStore) \
1104 SymI_HasProto(getOrSetSystemTimerThreadIOManagerThreadStore) \
1105 SymI_HasProto(getOrSetLibHSghcFastStringTable) \
1106 SymI_HasProto(getGCStats) \
1107 SymI_HasProto(getGCStatsEnabled) \
1108 SymI_HasProto(genericRaise) \
1109 SymI_HasProto(getProgArgv) \
1110 SymI_HasProto(getFullProgArgv) \
1111 SymI_HasProto(getStablePtr) \
1112 SymI_HasProto(hs_init) \
1113 SymI_HasProto(hs_exit) \
1114 SymI_HasProto(hs_set_argv) \
1115 SymI_HasProto(hs_add_root) \
1116 SymI_HasProto(hs_perform_gc) \
1117 SymI_HasProto(hs_lock_stable_tables) \
1118 SymI_HasProto(hs_unlock_stable_tables) \
1119 SymI_HasProto(hs_free_stable_ptr) \
1120 SymI_HasProto(hs_free_stable_ptr_unsafe) \
1121 SymI_HasProto(hs_free_fun_ptr) \
1122 SymI_HasProto(hs_hpc_rootModule) \
1123 SymI_HasProto(hs_hpc_module) \
1124 SymI_HasProto(initLinker) \
1125 SymI_HasProto(stg_unpackClosurezh) \
1126 SymI_HasProto(stg_getApStackValzh) \
1127 SymI_HasProto(stg_getSparkzh) \
1128 SymI_HasProto(stg_numSparkszh) \
1129 SymI_HasProto(stg_isCurrentThreadBoundzh) \
1130 SymI_HasProto(stg_isEmptyMVarzh) \
1131 SymI_HasProto(stg_killThreadzh) \
1132 SymI_HasProto(loadArchive) \
1133 SymI_HasProto(loadObj) \
1134 SymI_HasProto(insertStableSymbol) \
1135 SymI_HasProto(insertSymbol) \
1136 SymI_HasProto(lookupSymbol) \
1137 SymI_HasProto(stg_makeStablePtrzh) \
1138 SymI_HasProto(stg_mkApUpd0zh) \
1139 SymI_HasProto(stg_myThreadIdzh) \
1140 SymI_HasProto(stg_labelThreadzh) \
1141 SymI_HasProto(stg_newArrayzh) \
1142 SymI_HasProto(stg_newArrayArrayzh) \
1143 SymI_HasProto(stg_casArrayzh) \
1144 SymI_HasProto(stg_newBCOzh) \
1145 SymI_HasProto(stg_newByteArrayzh) \
1146 SymI_HasProto(stg_casIntArrayzh) \
1147 SymI_HasProto(stg_fetchAddIntArrayzh) \
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_readMVarzh) \
1319 SymI_HasProto(stg_threadStatuszh) \
1320 SymI_HasProto(stg_tryPutMVarzh) \
1321 SymI_HasProto(stg_tryTakeMVarzh) \
1322 SymI_HasProto(stg_tryReadMVarzh) \
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 objects = NULL;
1521 unloaded_objects = NULL;
1522
1523 #if defined(THREADED_RTS) && (defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO))
1524 initMutex(&dl_mutex);
1525 #endif
1526 stablehash = allocStrHashTable();
1527 symhash = allocStrHashTable();
1528
1529 /* populate the symbol table with stuff from the RTS */
1530 for (sym = rtsSyms; sym->lbl != NULL; sym++) {
1531 ghciInsertStrHashTable(WSTR("(GHCi built-in symbols)"),
1532 symhash, sym->lbl, sym->addr);
1533 IF_DEBUG(linker, debugBelch("initLinker: inserting rts symbol %s, %p\n", sym->lbl, sym->addr));
1534 }
1535 # if defined(OBJFORMAT_MACHO) && defined(powerpc_HOST_ARCH)
1536 machoInitSymbolsWithoutUnderscore();
1537 # endif
1538
1539 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1540 # if defined(RTLD_DEFAULT)
1541 dl_prog_handle = RTLD_DEFAULT;
1542 # else
1543 dl_prog_handle = dlopen(NULL, RTLD_LAZY);
1544 # endif /* RTLD_DEFAULT */
1545
1546 compileResult = regcomp(&re_invalid,
1547 "(([^ \t()])+\\.so([^ \t:()])*):([ \t])*(invalid ELF header|file too short)",
1548 REG_EXTENDED);
1549 if (compileResult != 0) {
1550 barf("Compiling re_invalid failed");
1551 }
1552 compileResult = regcomp(&re_realso,
1553 "(GROUP|INPUT) *\\( *([^ )]+)",
1554 REG_EXTENDED);
1555 if (compileResult != 0) {
1556 barf("Compiling re_realso failed");
1557 }
1558 # endif
1559
1560 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1561 if (RtsFlags.MiscFlags.linkerMemBase != 0) {
1562 // User-override for mmap_32bit_base
1563 mmap_32bit_base = (void*)RtsFlags.MiscFlags.linkerMemBase;
1564 }
1565 #endif
1566
1567 #if defined(mingw32_HOST_OS)
1568 /*
1569 * These two libraries cause problems when added to the static link,
1570 * but are necessary for resolving symbols in GHCi, hence we load
1571 * them manually here.
1572 */
1573 addDLL(WSTR("msvcrt"));
1574 addDLL(WSTR("kernel32"));
1575 #endif
1576
1577 IF_DEBUG(linker, debugBelch("initLinker: done\n"));
1578 return;
1579 }
1580
1581 void
1582 exitLinker( void ) {
1583 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1584 if (linker_init_done == 1) {
1585 regfree(&re_invalid);
1586 regfree(&re_realso);
1587 #ifdef THREADED_RTS
1588 closeMutex(&dl_mutex);
1589 #endif
1590 }
1591 #endif
1592 }
1593
1594 /* -----------------------------------------------------------------------------
1595 * Loading DLL or .so dynamic libraries
1596 * -----------------------------------------------------------------------------
1597 *
1598 * Add a DLL from which symbols may be found. In the ELF case, just
1599 * do RTLD_GLOBAL-style add, so no further messing around needs to
1600 * happen in order that symbols in the loaded .so are findable --
1601 * lookupSymbol() will subsequently see them by dlsym on the program's
1602 * dl-handle. Returns NULL if success, otherwise ptr to an err msg.
1603 *
1604 * In the PEi386 case, open the DLLs and put handles to them in a
1605 * linked list. When looking for a symbol, try all handles in the
1606 * list. This means that we need to load even DLLs that are guaranteed
1607 * to be in the ghc.exe image already, just so we can get a handle
1608 * to give to loadSymbol, so that we can find the symbols. For such
1609 * libraries, the LoadLibrary call should be a no-op except for returning
1610 * the handle.
1611 *
1612 */
1613
1614 #if defined(OBJFORMAT_PEi386)
1615 /* A record for storing handles into DLLs. */
1616
1617 typedef
1618 struct _OpenedDLL {
1619 pathchar* name;
1620 struct _OpenedDLL* next;
1621 HINSTANCE instance;
1622 }
1623 OpenedDLL;
1624
1625 /* A list thereof. */
1626 static OpenedDLL* opened_dlls = NULL;
1627 #endif
1628
1629 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1630
1631 /* Suppose in ghci we load a temporary SO for a module containing
1632 f = 1
1633 and then modify the module, recompile, and load another temporary
1634 SO with
1635 f = 2
1636 Then as we don't unload the first SO, dlsym will find the
1637 f = 1
1638 symbol whereas we want the
1639 f = 2
1640 symbol. We therefore need to keep our own SO handle list, and
1641 try SOs in the right order. */
1642
1643 typedef
1644 struct _OpenedSO {
1645 struct _OpenedSO* next;
1646 void *handle;
1647 }
1648 OpenedSO;
1649
1650 /* A list thereof. */
1651 static OpenedSO* openedSOs = NULL;
1652
1653 static const char *
1654 internal_dlopen(const char *dll_name)
1655 {
1656 OpenedSO* o_so;
1657 void *hdl;
1658 const char *errmsg;
1659 char *errmsg_copy;
1660
1661 // omitted: RTLD_NOW
1662 // see http://www.haskell.org/pipermail/cvs-ghc/2007-September/038570.html
1663 IF_DEBUG(linker,
1664 debugBelch("internal_dlopen: dll_name = '%s'\n", dll_name));
1665
1666 //-------------- Begin critical section ------------------
1667 // This critical section is necessary because dlerror() is not
1668 // required to be reentrant (see POSIX -- IEEE Std 1003.1-2008)
1669 // Also, the error message returned must be copied to preserve it
1670 // (see POSIX also)
1671
1672 ACQUIRE_LOCK(&dl_mutex);
1673 hdl = dlopen(dll_name, RTLD_LAZY | RTLD_GLOBAL);
1674
1675 errmsg = NULL;
1676 if (hdl == NULL) {
1677 /* dlopen failed; return a ptr to the error msg. */
1678 errmsg = dlerror();
1679 if (errmsg == NULL) errmsg = "addDLL: unknown error";
1680 errmsg_copy = stgMallocBytes(strlen(errmsg)+1, "addDLL");
1681 strcpy(errmsg_copy, errmsg);
1682 errmsg = errmsg_copy;
1683 }
1684 o_so = stgMallocBytes(sizeof(OpenedSO), "addDLL");
1685 o_so->handle = hdl;
1686 o_so->next = openedSOs;
1687 openedSOs = o_so;
1688
1689 RELEASE_LOCK(&dl_mutex);
1690 //--------------- End critical section -------------------
1691
1692 return errmsg;
1693 }
1694
1695 static void *
1696 internal_dlsym(void *hdl, const char *symbol) {
1697 OpenedSO* o_so;
1698 void *v;
1699
1700 // We acquire dl_mutex as concurrent dl* calls may alter dlerror
1701 ACQUIRE_LOCK(&dl_mutex);
1702 dlerror();
1703 for (o_so = openedSOs; o_so != NULL; o_so = o_so->next) {
1704 v = dlsym(o_so->handle, symbol);
1705 if (dlerror() == NULL) {
1706 RELEASE_LOCK(&dl_mutex);
1707 return v;
1708 }
1709 }
1710 v = dlsym(hdl, symbol)
1711 RELEASE_LOCK(&dl_mutex);
1712 return v;
1713 }
1714 # endif
1715
1716 const char *
1717 addDLL( pathchar *dll_name )
1718 {
1719 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1720 /* ------------------- ELF DLL loader ------------------- */
1721
1722 #define NMATCH 5
1723 regmatch_t match[NMATCH];
1724 const char *errmsg;
1725 FILE* fp;
1726 size_t match_length;
1727 #define MAXLINE 1000
1728 char line[MAXLINE];
1729 int result;
1730
1731 initLinker();
1732
1733 IF_DEBUG(linker, debugBelch("addDLL: dll_name = '%s'\n", dll_name));
1734 errmsg = internal_dlopen(dll_name);
1735
1736 if (errmsg == NULL) {
1737 return NULL;
1738 }
1739
1740 // GHC Trac ticket #2615
1741 // On some systems (e.g., Gentoo Linux) dynamic files (e.g. libc.so)
1742 // contain linker scripts rather than ELF-format object code. This
1743 // code handles the situation by recognizing the real object code
1744 // file name given in the linker script.
1745 //
1746 // If an "invalid ELF header" error occurs, it is assumed that the
1747 // .so file contains a linker script instead of ELF object code.
1748 // In this case, the code looks for the GROUP ( ... ) linker
1749 // directive. If one is found, the first file name inside the
1750 // parentheses is treated as the name of a dynamic library and the
1751 // code attempts to dlopen that file. If this is also unsuccessful,
1752 // an error message is returned.
1753
1754 // see if the error message is due to an invalid ELF header
1755 IF_DEBUG(linker, debugBelch("errmsg = '%s'\n", errmsg));
1756 result = regexec(&re_invalid, errmsg, (size_t) NMATCH, match, 0);
1757 IF_DEBUG(linker, debugBelch("result = %i\n", result));
1758 if (result == 0) {
1759 // success -- try to read the named file as a linker script
1760 match_length = (size_t) stg_min((match[1].rm_eo - match[1].rm_so),
1761 MAXLINE-1);
1762 strncpy(line, (errmsg+(match[1].rm_so)),match_length);
1763 line[match_length] = '\0'; // make sure string is null-terminated
1764 IF_DEBUG(linker, debugBelch ("file name = '%s'\n", line));
1765 if ((fp = fopen(line, "r")) == NULL) {
1766 return errmsg; // return original error if open fails
1767 }
1768 // try to find a GROUP or INPUT ( ... ) command
1769 while (fgets(line, MAXLINE, fp) != NULL) {
1770 IF_DEBUG(linker, debugBelch("input line = %s", line));
1771 if (regexec(&re_realso, line, (size_t) NMATCH, match, 0) == 0) {
1772 // success -- try to dlopen the first named file
1773 IF_DEBUG(linker, debugBelch("match%s\n",""));
1774 line[match[2].rm_eo] = '\0';
1775 errmsg = internal_dlopen(line+match[2].rm_so);
1776 break;
1777 }
1778 // if control reaches here, no GROUP or INPUT ( ... ) directive
1779 // was found and the original error message is returned to the
1780 // caller
1781 }
1782 fclose(fp);
1783 }
1784 return errmsg;
1785
1786 # elif defined(OBJFORMAT_PEi386)
1787 /* ------------------- Win32 DLL loader ------------------- */
1788
1789 pathchar* buf;
1790 OpenedDLL* o_dll;
1791 HINSTANCE instance;
1792
1793 initLinker();
1794
1795 /* debugBelch("\naddDLL; dll_name = `%s'\n", dll_name); */
1796
1797 /* See if we've already got it, and ignore if so. */
1798 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
1799 if (0 == pathcmp(o_dll->name, dll_name))
1800 return NULL;
1801 }
1802
1803 /* The file name has no suffix (yet) so that we can try
1804 both foo.dll and foo.drv
1805
1806 The documentation for LoadLibrary says:
1807 If no file name extension is specified in the lpFileName
1808 parameter, the default library extension .dll is
1809 appended. However, the file name string can include a trailing
1810 point character (.) to indicate that the module name has no
1811 extension. */
1812
1813 buf = stgMallocBytes((pathlen(dll_name) + 10) * sizeof(wchar_t), "addDLL");
1814 swprintf(buf, L"%s.DLL", dll_name);
1815 instance = LoadLibraryW(buf);
1816 if (instance == NULL) {
1817 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1818 // KAA: allow loading of drivers (like winspool.drv)
1819 swprintf(buf, L"%s.DRV", dll_name);
1820 instance = LoadLibraryW(buf);
1821 if (instance == NULL) {
1822 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1823 // #1883: allow loading of unix-style libfoo.dll DLLs
1824 swprintf(buf, L"lib%s.DLL", dll_name);
1825 instance = LoadLibraryW(buf);
1826 if (instance == NULL) {
1827 goto error;
1828 }
1829 }
1830 }
1831 stgFree(buf);
1832
1833 /* Add this DLL to the list of DLLs in which to search for symbols. */
1834 o_dll = stgMallocBytes( sizeof(OpenedDLL), "addDLL" );
1835 o_dll->name = pathdup(dll_name);
1836 o_dll->instance = instance;
1837 o_dll->next = opened_dlls;
1838 opened_dlls = o_dll;
1839
1840 return NULL;
1841
1842 error:
1843 stgFree(buf);
1844 sysErrorBelch("%" PATH_FMT, dll_name);
1845
1846 /* LoadLibrary failed; return a ptr to the error msg. */
1847 return "addDLL: could not load DLL";
1848
1849 # else
1850 barf("addDLL: not implemented on this platform");
1851 # endif
1852 }
1853
1854 /* -----------------------------------------------------------------------------
1855 * insert a stable symbol in the hash table
1856 */
1857
1858 void
1859 insertStableSymbol(pathchar* obj_name, char* key, StgPtr p)
1860 {
1861 ghciInsertStrHashTable(obj_name, stablehash, key, getStablePtr(p));
1862 }
1863
1864
1865 /* -----------------------------------------------------------------------------
1866 * insert a symbol in the hash table
1867 */
1868 void
1869 insertSymbol(pathchar* obj_name, char* key, void* data)
1870 {
1871 ghciInsertStrHashTable(obj_name, symhash, key, data);
1872 }
1873
1874 /* -----------------------------------------------------------------------------
1875 * lookup a symbol in the hash table
1876 */
1877 void *
1878 lookupSymbol( char *lbl )
1879 {
1880 void *val;
1881 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s\n", lbl));
1882 initLinker() ;
1883 ASSERT(symhash != NULL);
1884 val = lookupStrHashTable(symhash, lbl);
1885
1886 if (val == NULL) {
1887 IF_DEBUG(linker, debugBelch("lookupSymbol: symbol not found\n"));
1888 # if defined(OBJFORMAT_ELF)
1889 return internal_dlsym(dl_prog_handle, lbl);
1890 # elif defined(OBJFORMAT_MACHO)
1891 # if HAVE_DLFCN_H
1892 /* On OS X 10.3 and later, we use dlsym instead of the old legacy
1893 interface.
1894
1895 HACK: On OS X, all symbols are prefixed with an underscore.
1896 However, dlsym wants us to omit the leading underscore from the
1897 symbol name -- the dlsym routine puts it back on before searching
1898 for the symbol. For now, we simply strip it off here (and ONLY
1899 here).
1900 */
1901 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s with dlsym\n", lbl));
1902 ASSERT(lbl[0] == '_');
1903 return internal_dlsym(dl_prog_handle, lbl + 1);
1904 # else
1905 if (NSIsSymbolNameDefined(lbl)) {
1906 NSSymbol symbol = NSLookupAndBindSymbol(lbl);
1907 return NSAddressOfSymbol(symbol);
1908 } else {
1909 return NULL;
1910 }
1911 # endif /* HAVE_DLFCN_H */
1912 # elif defined(OBJFORMAT_PEi386)
1913 void* sym;
1914
1915 sym = lookupSymbolInDLLs((unsigned char*)lbl);
1916 if (sym != NULL) { return sym; };
1917
1918 // Also try looking up the symbol without the @N suffix. Some
1919 // DLLs have the suffixes on their symbols, some don't.
1920 zapTrailingAtSign ( (unsigned char*)lbl );
1921 sym = lookupSymbolInDLLs((unsigned char*)lbl);
1922 if (sym != NULL) { return sym; };
1923 return NULL;
1924
1925 # else
1926 ASSERT(2+2 == 5);
1927 return NULL;
1928 # endif
1929 } else {
1930 IF_DEBUG(linker, debugBelch("lookupSymbol: value of %s is %p\n", lbl, val));
1931 return val;
1932 }
1933 }
1934
1935 /* -----------------------------------------------------------------------------
1936 * Debugging aid: look in GHCi's object symbol tables for symbols
1937 * within DELTA bytes of the specified address, and show their names.
1938 */
1939 #ifdef DEBUG
1940 void ghci_enquire ( char* addr );
1941
1942 void ghci_enquire ( char* addr )
1943 {
1944 int i;
1945 char* sym;
1946 char* a;
1947 const int DELTA = 64;
1948 ObjectCode* oc;
1949
1950 initLinker();
1951
1952 for (oc = objects; oc; oc = oc->next) {
1953 for (i = 0; i < oc->n_symbols; i++) {
1954 sym = oc->symbols[i];
1955 if (sym == NULL) continue;
1956 a = NULL;
1957 if (a == NULL) {
1958 a = lookupStrHashTable(symhash, sym);
1959 }
1960 if (a == NULL) {
1961 // debugBelch("ghci_enquire: can't find %s\n", sym);
1962 }
1963 else if (addr-DELTA <= a && a <= addr+DELTA) {
1964 debugBelch("%p + %3d == `%s'\n", addr, (int)(a - addr), sym);
1965 }
1966 }
1967 }
1968 }
1969 #endif
1970
1971 #ifdef USE_MMAP
1972 #define ROUND_UP(x,size) ((x + size - 1) & ~(size - 1))
1973
1974 static void *
1975 mmapForLinker (size_t bytes, nat flags, int fd)
1976 {
1977 void *map_addr = NULL;
1978 void *result;
1979 int pagesize, size;
1980 static nat fixed = 0;
1981
1982 IF_DEBUG(linker, debugBelch("mmapForLinker: start\n"));
1983 pagesize = getpagesize();
1984 size = ROUND_UP(bytes, pagesize);
1985
1986 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1987 mmap_again:
1988
1989 if (mmap_32bit_base != 0) {
1990 map_addr = mmap_32bit_base;
1991 }
1992 #endif
1993
1994 IF_DEBUG(linker, debugBelch("mmapForLinker: \tprotection %#0x\n", PROT_EXEC | PROT_READ | PROT_WRITE));
1995 IF_DEBUG(linker, debugBelch("mmapForLinker: \tflags %#0x\n", MAP_PRIVATE | TRY_MAP_32BIT | fixed | flags));
1996 result = mmap(map_addr, size, PROT_EXEC|PROT_READ|PROT_WRITE,
1997 MAP_PRIVATE|TRY_MAP_32BIT|fixed|flags, fd, 0);
1998
1999 if (result == MAP_FAILED) {
2000 sysErrorBelch("mmap %" FMT_Word " bytes at %p",(W_)size,map_addr);
2001 errorBelch("Try specifying an address with +RTS -xm<addr> -RTS");
2002 stg_exit(EXIT_FAILURE);
2003 }
2004
2005 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2006 if (mmap_32bit_base != 0) {
2007 if (result == map_addr) {
2008 mmap_32bit_base = (StgWord8*)map_addr + size;
2009 } else {
2010 if ((W_)result > 0x80000000) {
2011 // oops, we were given memory over 2Gb
2012 #if defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS)
2013 // Some platforms require MAP_FIXED. This is normally
2014 // a bad idea, because MAP_FIXED will overwrite
2015 // existing mappings.
2016 munmap(result,size);
2017 fixed = MAP_FIXED;
2018 goto mmap_again;
2019 #else
2020 barf("loadObj: failed to mmap() memory below 2Gb; asked for %lu bytes at %p. Try specifying an address with +RTS -xm<addr> -RTS", size, map_addr, result);
2021 #endif
2022 } else {
2023 // hmm, we were given memory somewhere else, but it's
2024 // still under 2Gb so we can use it. Next time, ask
2025 // for memory right after the place we just got some
2026 mmap_32bit_base = (StgWord8*)result + size;
2027 }
2028 }
2029 } else {
2030 if ((W_)result > 0x80000000) {
2031 // oops, we were given memory over 2Gb
2032 // ... try allocating memory somewhere else?;
2033 debugTrace(DEBUG_linker,"MAP_32BIT didn't work; gave us %lu bytes at 0x%p", bytes, result);
2034 munmap(result, size);
2035
2036 // Set a base address and try again... (guess: 1Gb)
2037 mmap_32bit_base = (void*)0x40000000;
2038 goto mmap_again;
2039 }
2040 }
2041 #endif
2042
2043 IF_DEBUG(linker, debugBelch("mmapForLinker: mapped %" FMT_Word " bytes starting at %p\n", (W_)size, result));
2044 IF_DEBUG(linker, debugBelch("mmapForLinker: done\n"));
2045 return result;
2046 }
2047 #endif // USE_MMAP
2048
2049
2050 void freeObjectCode (ObjectCode *oc)
2051 {
2052 #ifdef USE_MMAP
2053 int pagesize, size, r;
2054
2055 pagesize = getpagesize();
2056 size = ROUND_UP(oc->fileSize, pagesize);
2057
2058 r = munmap(oc->image, size);
2059 if (r == -1) {
2060 sysErrorBelch("munmap");
2061 }
2062
2063 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2064 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2065 if (!USE_CONTIGUOUS_MMAP)
2066 {
2067 munmap(oc->symbol_extras,
2068 ROUND_UP(sizeof(SymbolExtra) * oc->n_symbol_extras, pagesize));
2069 }
2070 #endif
2071 #endif
2072
2073 #else
2074
2075 stgFree(oc->image);
2076
2077 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2078 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2079 stgFree(oc->symbol_extras);
2080 #endif
2081 #endif
2082
2083 #endif
2084
2085 stgFree(oc->fileName);
2086 stgFree(oc->archiveMemberName);
2087 stgFree(oc);
2088 }
2089
2090
2091 static ObjectCode*
2092 mkOc( pathchar *path, char *image, int imageSize,
2093 char *archiveMemberName
2094 #ifndef USE_MMAP
2095 #ifdef darwin_HOST_OS
2096 , int misalignment
2097 #endif
2098 #endif
2099 ) {
2100 ObjectCode* oc;
2101
2102 IF_DEBUG(linker, debugBelch("mkOc: start\n"));
2103 oc = stgMallocBytes(sizeof(ObjectCode), "loadArchive(oc)");
2104
2105 # if defined(OBJFORMAT_ELF)
2106 oc->formatName = "ELF";
2107 # elif defined(OBJFORMAT_PEi386)
2108 oc->formatName = "PEi386";
2109 # elif defined(OBJFORMAT_MACHO)
2110 oc->formatName = "Mach-O";
2111 # else
2112 stgFree(oc);
2113 barf("loadObj: not implemented on this platform");
2114 # endif
2115
2116 oc->image = image;
2117 oc->fileName = pathdup(path);
2118
2119 if (archiveMemberName) {
2120 oc->archiveMemberName = stgMallocBytes( strlen(archiveMemberName)+1, "loadObj" );
2121 strcpy(oc->archiveMemberName, archiveMemberName);
2122 }
2123 else {
2124 oc->archiveMemberName = NULL;
2125 }
2126
2127 oc->fileSize = imageSize;
2128 oc->symbols = NULL;
2129 oc->sections = NULL;
2130 oc->proddables = NULL;
2131
2132 #ifndef USE_MMAP
2133 #ifdef darwin_HOST_OS
2134 oc->misalignment = misalignment;
2135 #endif
2136 #endif
2137
2138 /* chain it onto the list of objects */
2139 oc->next = objects;
2140 objects = oc;
2141
2142 IF_DEBUG(linker, debugBelch("mkOc: done\n"));
2143 return oc;
2144 }
2145
2146 HsInt
2147 loadArchive( pathchar *path )
2148 {
2149 ObjectCode* oc;
2150 char *image;
2151 int memberSize;
2152 FILE *f;
2153 int n;
2154 size_t thisFileNameSize;
2155 char *fileName;
2156 size_t fileNameSize;
2157 int isObject, isGnuIndex;
2158 char tmp[20];
2159 char *gnuFileIndex;
2160 int gnuFileIndexSize;
2161 #if defined(darwin_HOST_OS)
2162 int i;
2163 uint32_t nfat_arch, nfat_offset, cputype, cpusubtype;
2164 #if defined(i386_HOST_ARCH)
2165 const uint32_t mycputype = CPU_TYPE_X86;
2166 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_ALL;
2167 #elif defined(x86_64_HOST_ARCH)
2168 const uint32_t mycputype = CPU_TYPE_X86_64;
2169 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_64_ALL;
2170 #elif defined(powerpc_HOST_ARCH)
2171 const uint32_t mycputype = CPU_TYPE_POWERPC;
2172 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2173 #elif defined(powerpc64_HOST_ARCH)
2174 const uint32_t mycputype = CPU_TYPE_POWERPC64;
2175 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2176 #else
2177 #error Unknown Darwin architecture
2178 #endif
2179 #if !defined(USE_MMAP)
2180 int misalignment;
2181 #endif
2182 #endif
2183
2184 IF_DEBUG(linker, debugBelch("loadArchive: start\n"));
2185 IF_DEBUG(linker, debugBelch("loadArchive: Loading archive `%" PATH_FMT" '\n", path));
2186
2187 gnuFileIndex = NULL;
2188 gnuFileIndexSize = 0;
2189
2190 fileNameSize = 32;
2191 fileName = stgMallocBytes(fileNameSize, "loadArchive(fileName)");
2192
2193 f = pathopen(path, WSTR("rb"));
2194 if (!f)
2195 barf("loadObj: can't read `%s'", path);
2196
2197 /* Check if this is an archive by looking for the magic "!<arch>\n"
2198 * string. Usually, if this fails, we barf and quit. On Darwin however,
2199 * we may have a fat archive, which contains archives for more than
2200 * one architecture. Fat archives start with the magic number 0xcafebabe,
2201 * always stored big endian. If we find a fat_header, we scan through
2202 * the fat_arch structs, searching through for one for our host
2203 * architecture. If a matching struct is found, we read the offset
2204 * of our archive data (nfat_offset) and seek forward nfat_offset bytes
2205 * from the start of the file.
2206 *
2207 * A subtlety is that all of the members of the fat_header and fat_arch
2208 * structs are stored big endian, so we need to call byte order
2209 * conversion functions.
2210 *
2211 * If we find the appropriate architecture in a fat archive, we gobble
2212 * its magic "!<arch>\n" string and continue processing just as if
2213 * we had a single architecture archive.
2214 */
2215
2216 n = fread ( tmp, 1, 8, f );
2217 if (n != 8)
2218 barf("loadArchive: Failed reading header from `%s'", path);
2219 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2220
2221 #if defined(darwin_HOST_OS)
2222 /* Not a standard archive, look for a fat archive magic number: */
2223 if (ntohl(*(uint32_t *)tmp) == FAT_MAGIC) {
2224 nfat_arch = ntohl(*(uint32_t *)(tmp + 4));
2225 IF_DEBUG(linker, debugBelch("loadArchive: found a fat archive containing %d architectures\n", nfat_arch));
2226 nfat_offset = 0;
2227
2228 for (i = 0; i < (int)nfat_arch; i++) {
2229 /* search for the right arch */
2230 n = fread( tmp, 1, 20, f );
2231 if (n != 8)
2232 barf("loadArchive: Failed reading arch from `%s'", path);
2233 cputype = ntohl(*(uint32_t *)tmp);
2234 cpusubtype = ntohl(*(uint32_t *)(tmp + 4));
2235
2236 if (cputype == mycputype && cpusubtype == mycpusubtype) {
2237 IF_DEBUG(linker, debugBelch("loadArchive: found my archive in a fat archive\n"));
2238 nfat_offset = ntohl(*(uint32_t *)(tmp + 8));
2239 break;
2240 }
2241 }
2242
2243 if (nfat_offset == 0) {
2244 barf ("loadArchive: searched %d architectures, but no host arch found", (int)nfat_arch);
2245 }
2246 else {
2247 n = fseek( f, nfat_offset, SEEK_SET );
2248 if (n != 0)
2249 barf("loadArchive: Failed to seek to arch in `%s'", path);
2250 n = fread ( tmp, 1, 8, f );
2251 if (n != 8)
2252 barf("loadArchive: Failed reading header from `%s'", path);
2253 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2254 barf("loadArchive: couldn't find archive in `%s' at offset %d", path, nfat_offset);
2255 }
2256 }
2257 }
2258 else {
2259 barf("loadArchive: Neither an archive, nor a fat archive: `%s'", path);
2260 }
2261
2262 #else
2263 barf("loadArchive: Not an archive: `%s'", path);
2264 #endif
2265 }
2266
2267 IF_DEBUG(linker, debugBelch("loadArchive: loading archive contents\n"));
2268
2269 while(1) {
2270 n = fread ( fileName, 1, 16, f );
2271 if (n != 16) {
2272 if (feof(f)) {
2273 IF_DEBUG(linker, debugBelch("loadArchive: EOF while reading from '%" PATH_FMT "'\n", path));
2274 break;
2275 }
2276 else {
2277 barf("loadArchive: Failed reading file name from `%s'", path);
2278 }
2279 }
2280
2281 #if defined(darwin_HOST_OS)
2282 if (strncmp(fileName, "!<arch>\n", 8) == 0) {
2283 IF_DEBUG(linker, debugBelch("loadArchive: found the start of another archive, breaking\n"));
2284 break;
2285 }
2286 #endif
2287
2288 n = fread ( tmp, 1, 12, f );
2289 if (n != 12)
2290 barf("loadArchive: Failed reading mod time from `%s'", path);
2291 n = fread ( tmp, 1, 6, f );
2292 if (n != 6)
2293 barf("loadArchive: Failed reading owner from `%s'", path);
2294 n = fread ( tmp, 1, 6, f );
2295 if (n != 6)
2296 barf("loadArchive: Failed reading group from `%s'", path);
2297 n = fread ( tmp, 1, 8, f );
2298 if (n != 8)
2299 barf("loadArchive: Failed reading mode from `%s'", path);
2300 n = fread ( tmp, 1, 10, f );
2301 if (n != 10)
2302 barf("loadArchive: Failed reading size from `%s'", path);
2303 tmp[10] = '\0';
2304 for (n = 0; isdigit(tmp[n]); n++);
2305 tmp[n] = '\0';
2306 memberSize = atoi(tmp);
2307
2308 IF_DEBUG(linker, debugBelch("loadArchive: size of this archive member is %d\n", memberSize));
2309 n = fread ( tmp, 1, 2, f );
2310 if (n != 2)
2311 barf("loadArchive: Failed reading magic from `%s'", path);
2312 if (strncmp(tmp, "\x60\x0A", 2) != 0)
2313 barf("loadArchive: Failed reading magic from `%s' at %ld. Got %c%c",
2314 path, ftell(f), tmp[0], tmp[1]);
2315
2316 isGnuIndex = 0;
2317 /* Check for BSD-variant large filenames */
2318 if (0 == strncmp(fileName, "#1/", 3)) {
2319 fileName[16] = '\0';
2320 if (isdigit(fileName[3])) {
2321 for (n = 4; isdigit(fileName[n]); n++);
2322 fileName[n] = '\0';
2323 thisFileNameSize = atoi(fileName + 3);
2324 memberSize -= thisFileNameSize;
2325 if (thisFileNameSize >= fileNameSize) {
2326 /* Double it to avoid potentially continually
2327 increasing it by 1 */
2328 fileNameSize = thisFileNameSize * 2;
2329 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2330 }
2331 n = fread ( fileName, 1, thisFileNameSize, f );
2332 if (n != (int)thisFileNameSize) {
2333 barf("loadArchive: Failed reading filename from `%s'",
2334 path);
2335 }
2336 fileName[thisFileNameSize] = 0;
2337
2338 /* On OS X at least, thisFileNameSize is the size of the
2339 fileName field, not the length of the fileName
2340 itself. */
2341 thisFileNameSize = strlen(fileName);
2342 }
2343 else {
2344 barf("loadArchive: BSD-variant filename size not found while reading filename from `%s'", path);
2345 }
2346 }
2347 /* Check for GNU file index file */
2348 else if (0 == strncmp(fileName, "//", 2)) {
2349 fileName[0] = '\0';
2350 thisFileNameSize = 0;
2351 isGnuIndex = 1;
2352 }
2353 /* Check for a file in the GNU file index */
2354 else if (fileName[0] == '/') {
2355 if (isdigit(fileName[1])) {
2356 int i;
2357
2358 for (n = 2; isdigit(fileName[n]); n++);
2359 fileName[n] = '\0';
2360 n = atoi(fileName + 1);
2361
2362 if (gnuFileIndex == NULL) {
2363 barf("loadArchive: GNU-variant filename without an index while reading from `%s'", path);
2364 }
2365 if (n < 0 || n > gnuFileIndexSize) {
2366 barf("loadArchive: GNU-variant filename offset %d out of range [0..%d] while reading filename from `%s'", n, gnuFileIndexSize, path);
2367 }
2368 if (n != 0 && gnuFileIndex[n - 1] != '\n') {
2369 barf("loadArchive: GNU-variant filename offset %d invalid (range [0..%d]) while reading filename from `%s'", n, gnuFileIndexSize, path);
2370 }
2371 for (i = n; gnuFileIndex[i] != '/'; i++);
2372 thisFileNameSize = i - n;
2373 if (thisFileNameSize >= fileNameSize) {
2374 /* Double it to avoid potentially continually
2375 increasing it by 1 */
2376 fileNameSize = thisFileNameSize * 2;
2377 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2378 }
2379 memcpy(fileName, gnuFileIndex + n, thisFileNameSize);
2380 fileName[thisFileNameSize] = '\0';
2381 }
2382 else if (fileName[1] == ' ') {
2383 fileName[0] = '\0';
2384 thisFileNameSize = 0;
2385 }
2386 else {
2387 barf("loadArchive: GNU-variant filename offset not found while reading filename from `%s'", path);
2388 }
2389 }
2390 /* Finally, the case where the filename field actually contains
2391 the filename */
2392 else {
2393 /* GNU ar terminates filenames with a '/', this allowing
2394 spaces in filenames. So first look to see if there is a
2395 terminating '/'. */
2396 for (thisFileNameSize = 0;
2397 thisFileNameSize < 16;
2398 thisFileNameSize++) {
2399 if (fileName[thisFileNameSize] == '/') {
2400 fileName[thisFileNameSize] = '\0';
2401 break;
2402 }
2403 }
2404 /* If we didn't find a '/', then a space teminates the
2405 filename. Note that if we don't find one, then
2406 thisFileNameSize ends up as 16, and we already have the
2407 '\0' at the end. */
2408 if (thisFileNameSize == 16) {
2409 for (thisFileNameSize = 0;
2410 thisFileNameSize < 16;
2411 thisFileNameSize++) {
2412 if (fileName[thisFileNameSize] == ' ') {
2413 fileName[thisFileNameSize] = '\0';
2414 break;
2415 }
2416 }
2417 }
2418 }
2419
2420 IF_DEBUG(linker,
2421 debugBelch("loadArchive: Found member file `%s'\n", fileName));
2422
2423 isObject = thisFileNameSize >= 2
2424 && fileName[thisFileNameSize - 2] == '.'
2425 && fileName[thisFileNameSize - 1] == 'o';
2426
2427 IF_DEBUG(linker, debugBelch("loadArchive: \tthisFileNameSize = %d\n", (int)thisFileNameSize));
2428 IF_DEBUG(linker, debugBelch("loadArchive: \tisObject = %d\n", isObject));
2429
2430 if (isObject) {
2431 char *archiveMemberName;
2432
2433 IF_DEBUG(linker, debugBelch("loadArchive: Member is an object file...loading...\n"));
2434
2435 /* We can't mmap from the archive directly, as object
2436 files need to be 8-byte aligned but files in .ar
2437 archives are 2-byte aligned. When possible we use mmap
2438 to get some anonymous memory, as on 64-bit platforms if
2439 we use malloc then we can be given memory above 2^32.
2440 In the mmap case we're probably wasting lots of space;
2441 we could do better. */
2442 #if defined(USE_MMAP)
2443 image = mmapForLinker(memberSize, MAP_ANONYMOUS, -1);
2444 #elif defined(mingw32_HOST_OS)
2445 // TODO: We would like to use allocateExec here, but allocateExec
2446 // cannot currently allocate blocks large enough.
2447 {
2448 int offset;
2449 #if defined(x86_64_HOST_ARCH)
2450 /* We get back 8-byte aligned memory (is that guaranteed?), but
2451 the offsets to the sections within the file are all 4 mod 8
2452 (is that guaranteed?). We therefore need to offset the image
2453 by 4, so that all the pointers are 8-byte aligned, so that
2454 pointer tagging works. */
2455 offset = 4;
2456 #else
2457 offset = 0;
2458 #endif
2459 image = VirtualAlloc(NULL, memberSize + offset,
2460 MEM_RESERVE | MEM_COMMIT,
2461 PAGE_EXECUTE_READWRITE);
2462 image += offset;
2463 }
2464 #elif defined(darwin_HOST_OS)
2465 /* See loadObj() */
2466 misalignment = machoGetMisalignment(f);
2467 image = stgMallocBytes(memberSize + misalignment, "loadArchive(image)");
2468 image += misalignment;
2469 #else
2470 image = stgMallocBytes(memberSize, "loadArchive(image)");
2471 #endif
2472 n = fread ( image, 1, memberSize, f );
2473 if (n != memberSize) {
2474 barf("loadArchive: error whilst reading `%s'", path);
2475 }
2476
2477 archiveMemberName = stgMallocBytes(pathlen(path) + thisFileNameSize + 3,
2478 "loadArchive(file)");
2479 sprintf(archiveMemberName, "%" PATH_FMT "(%.*s)",
2480 path, (int)thisFileNameSize, fileName);
2481
2482 oc = mkOc(path, image, memberSize, archiveMemberName
2483 #ifndef USE_MMAP
2484 #ifdef darwin_HOST_OS
2485 , misalignment
2486 #endif
2487 #endif
2488 );
2489
2490 stgFree(archiveMemberName);
2491
2492 if (0 == loadOc(oc)) {
2493 stgFree(fileName);
2494 return 0;
2495 }
2496 }
2497 else if (isGnuIndex) {
2498 if (gnuFileIndex != NULL) {
2499 barf("loadArchive: GNU-variant index found, but already have an index, while reading filename from `%s'", path);
2500 }
2501 IF_DEBUG(linker, debugBelch("loadArchive: Found GNU-variant file index\n"));
2502 #ifdef USE_MMAP
2503 gnuFileIndex = mmapForLinker(memberSize + 1, MAP_ANONYMOUS, -1);
2504 #else
2505 gnuFileIndex = stgMallocBytes(memberSize + 1, "loadArchive(image)");
2506 #endif
2507 n = fread ( gnuFileIndex, 1, memberSize, f );
2508 if (n != memberSize) {
2509 barf("loadArchive: error whilst reading `%s'", path);
2510 }
2511 gnuFileIndex[memberSize] = '/';
2512 gnuFileIndexSize = memberSize;
2513 }
2514 else {
2515 IF_DEBUG(linker, debugBelch("loadArchive: '%s' does not appear to be an object file\n", fileName));
2516 n = fseek(f, memberSize, SEEK_CUR);
2517 if (n != 0)
2518 barf("loadArchive: error whilst seeking by %d in `%s'",
2519 memberSize, path);
2520 }
2521
2522 /* .ar files are 2-byte aligned */
2523 if (memberSize % 2) {
2524 IF_DEBUG(linker, debugBelch("loadArchive: trying to read one pad byte\n"));
2525 n = fread ( tmp, 1, 1, f );
2526 if (n != 1) {
2527 if (feof(f)) {
2528 IF_DEBUG(linker, debugBelch("loadArchive: found EOF while reading one pad byte\n"));
2529 break;
2530 }
2531 else {
2532 barf("loadArchive: Failed reading padding from `%s'", path);
2533 }
2534 }
2535 IF_DEBUG(linker, debugBelch("loadArchive: successfully read one pad byte\n"));
2536 }
2537 IF_DEBUG(linker, debugBelch("loadArchive: reached end of archive loading while loop\n"));
2538 }
2539
2540 fclose(f);
2541
2542 stgFree(fileName);
2543 if (gnuFileIndex != NULL) {
2544 #ifdef USE_MMAP
2545 munmap(gnuFileIndex, gnuFileIndexSize + 1);
2546 #else
2547 stgFree(gnuFileIndex);
2548 #endif
2549 }
2550
2551 IF_DEBUG(linker, debugBelch("loadArchive: done\n"));
2552 return 1;
2553 }
2554
2555 /* -----------------------------------------------------------------------------
2556 * Load an obj (populate the global symbol table, but don't resolve yet)
2557 *
2558 * Returns: 1 if ok, 0 on error.
2559 */
2560 HsInt
2561 loadObj( pathchar *path )
2562 {
2563 ObjectCode* oc;
2564 char *image;
2565 int fileSize;
2566 struct_stat st;
2567 int r;
2568 #ifdef USE_MMAP
2569 int fd;
2570 #else
2571 FILE *f;
2572 # if defined(darwin_HOST_OS)
2573 int misalignment;
2574 # endif
2575 #endif
2576 IF_DEBUG(linker, debugBelch("loadObj %" PATH_FMT "\n", path));
2577
2578 initLinker();
2579
2580 /* debugBelch("loadObj %s\n", path ); */
2581
2582 /* Check that we haven't already loaded this object.
2583 Ignore requests to load multiple times */
2584 {
2585 ObjectCode *o;
2586 int is_dup = 0;
2587 for (o = objects; o; o = o->next) {
2588 if (0 == pathcmp(o->fileName, path)) {
2589 is_dup = 1;
2590 break; /* don't need to search further */
2591 }
2592 }
2593 if (is_dup) {
2594 IF_DEBUG(linker, debugBelch(
2595 "GHCi runtime linker: warning: looks like you're trying to load the\n"
2596 "same object file twice:\n"
2597 " %" PATH_FMT "\n"
2598 "GHCi will ignore this, but be warned.\n"
2599 , path));
2600 return 1; /* success */
2601 }
2602 }
2603
2604 r = pathstat(path, &st);
2605 if (r == -1) {
2606 IF_DEBUG(linker, debugBelch("File doesn't exist\n"));
2607 return 0;
2608 }
2609
2610 fileSize = st.st_size;
2611
2612 #ifdef USE_MMAP
2613 /* On many architectures malloc'd memory isn't executable, so we need to use mmap. */
2614
2615 #if defined(openbsd_HOST_OS)
2616 fd = open(path, O_RDONLY, S_IRUSR);
2617 #else
2618 fd = open(path, O_RDONLY);
2619 #endif
2620 if (fd == -1)
2621 barf("loadObj: can't open `%s'", path);
2622
2623 image = mmapForLinker(fileSize, 0, fd);
2624
2625 close(fd);
2626
2627 #else /* !USE_MMAP */
2628 /* load the image into memory */
2629 f = pathopen(path, WSTR("rb"));
2630 if (!f)
2631 barf("loadObj: can't read `%" PATH_FMT "'", path);
2632
2633 # if defined(mingw32_HOST_OS)
2634 // TODO: We would like to use allocateExec here, but allocateExec
2635 // cannot currently allocate blocks large enough.
2636 {
2637 int offset;
2638 #if defined(x86_64_HOST_ARCH)
2639 /* We get back 8-byte aligned memory (is that guaranteed?), but
2640 the offsets to the sections within the file are all 4 mod 8
2641 (is that guaranteed?). We therefore need to offset the image
2642 by 4, so that all the pointers are 8-byte aligned, so that
2643 pointer tagging works. */
2644 offset = 4;
2645 #else
2646 offset = 0;
2647 #endif
2648 image = VirtualAlloc(NULL, fileSize + offset, MEM_RESERVE | MEM_COMMIT,
2649 PAGE_EXECUTE_READWRITE);
2650 image += offset;
2651 }
2652 # elif defined(darwin_HOST_OS)
2653 // In a Mach-O .o file, all sections can and will be misaligned
2654 // if the total size of the headers is not a multiple of the
2655 // desired alignment. This is fine for .o files that only serve
2656 // as input for the static linker, but it's not fine for us,
2657 // as SSE (used by gcc for floating point) and Altivec require
2658 // 16-byte alignment.
2659 // We calculate the correct alignment from the header before
2660 // reading the file, and then we misalign image on purpose so
2661 // that the actual sections end up aligned again.
2662 misalignment = machoGetMisalignment(f);
2663 image = stgMallocBytes(fileSize + misalignment, "loadObj(image)");
2664 image += misalignment;
2665 # else
2666 image = stgMallocBytes(fileSize, "loadObj(image)");
2667 # endif
2668
2669 {
2670 int n;
2671 n = fread ( image, 1, fileSize, f );
2672 if (n != fileSize)
2673 barf("loadObj: error whilst reading `%s'", path);
2674 }
2675 fclose(f);
2676 #endif /* USE_MMAP */
2677
2678 oc = mkOc(path, image, fileSize, NULL
2679 #ifndef USE_MMAP
2680 #ifdef darwin_HOST_OS
2681 , misalignment
2682 #endif
2683 #endif
2684 );
2685
2686 return loadOc(oc);
2687 }
2688
2689 static HsInt
2690 loadOc( ObjectCode* oc ) {
2691 int r;
2692
2693 IF_DEBUG(linker, debugBelch("loadOc: start\n"));
2694
2695 # if defined(OBJFORMAT_MACHO) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH))
2696 r = ocAllocateSymbolExtras_MachO ( oc );
2697 if (!r) {
2698 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_MachO failed\n"));
2699 return r;
2700 }
2701 # elif defined(OBJFORMAT_ELF) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH))
2702 r = ocAllocateSymbolExtras_ELF ( oc );
2703 if (!r) {
2704 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_ELF failed\n"));
2705 return r;
2706 }
2707 #endif
2708
2709 /* verify the in-memory image */
2710 # if defined(OBJFORMAT_ELF)
2711 r = ocVerifyImage_ELF ( oc );
2712 # elif defined(OBJFORMAT_PEi386)
2713 r = ocVerifyImage_PEi386 ( oc );
2714 # elif defined(OBJFORMAT_MACHO)
2715 r = ocVerifyImage_MachO ( oc );
2716 # else
2717 barf("loadObj: no verify method");
2718 # endif
2719 if (!r) {
2720 IF_DEBUG(linker, debugBelch("loadOc: ocVerifyImage_* failed\n"));
2721 return r;
2722 }
2723
2724 /* build the symbol list for this image */
2725 # if defined(OBJFORMAT_ELF)
2726 r = ocGetNames_ELF ( oc );
2727 # elif defined(OBJFORMAT_PEi386)
2728 r = ocGetNames_PEi386 ( oc );
2729 # elif defined(OBJFORMAT_MACHO)
2730 r = ocGetNames_MachO ( oc );
2731 # else
2732 barf("loadObj: no getNames method");
2733 # endif
2734 if (!r) {
2735 IF_DEBUG(linker, debugBelch("loadOc: ocGetNames_* failed\n"));
2736 return r;
2737 }
2738
2739 /* loaded, but not resolved yet */
2740 oc->status = OBJECT_LOADED;
2741 IF_DEBUG(linker, debugBelch("loadOc: done.\n"));
2742
2743 return 1;
2744 }
2745
2746 /* -----------------------------------------------------------------------------
2747 * resolve all the currently unlinked objects in memory
2748 *
2749 * Returns: 1 if ok, 0 on error.
2750 */
2751 HsInt
2752 resolveObjs( void )
2753 {
2754 ObjectCode *oc;
2755 int r;
2756
2757 IF_DEBUG(linker, debugBelch("resolveObjs: start\n"));
2758 initLinker();
2759
2760 for (oc = objects; oc; oc = oc->next) {
2761 if (oc->status != OBJECT_RESOLVED) {
2762 # if defined(OBJFORMAT_ELF)
2763 r = ocResolve_ELF ( oc );
2764 # elif defined(OBJFORMAT_PEi386)
2765 r = ocResolve_PEi386 ( oc );
2766 # elif defined(OBJFORMAT_MACHO)
2767 r = ocResolve_MachO ( oc );
2768 # else
2769 barf("resolveObjs: not implemented on this platform");
2770 # endif
2771 if (!r) { return r; }
2772 oc->status = OBJECT_RESOLVED;
2773 }
2774 }
2775 IF_DEBUG(linker, debugBelch("resolveObjs: done\n"));
2776 return 1;
2777 }
2778
2779 /* -----------------------------------------------------------------------------
2780 * delete an object from the pool
2781 */
2782 HsInt
2783 unloadObj( pathchar *path )
2784 {
2785 ObjectCode *oc, *prev, *next;
2786 HsBool unloadedAnyObj = HS_BOOL_FALSE;
2787
2788 ASSERT(symhash != NULL);
2789 ASSERT(objects != NULL);
2790
2791 initLinker();
2792
2793 IF_DEBUG(linker, debugBelch("unloadObj: %s\n", path));
2794
2795 prev = NULL;
2796 for (oc = objects; oc; prev = oc, oc = next) {
2797 next = oc->next;
2798
2799 if (!pathcmp(oc->fileName,path)) {
2800
2801 /* Remove all the mappings for the symbols within this
2802 * object..
2803 */
2804 {
2805 int i;
2806 for (i = 0; i < oc->n_symbols; i++) {
2807 if (oc->symbols[i] != NULL) {
2808 removeStrHashTable(symhash, oc->symbols[i], NULL);
2809 }
2810 }
2811 }
2812
2813 if (prev == NULL) {
2814 objects = oc->next;
2815 } else {
2816 prev->next = oc->next;
2817 }
2818 oc->next = unloaded_objects;
2819 unloaded_objects = oc;
2820
2821 // The data itself and a few other bits (oc->fileName,
2822 // oc->archiveMemberName) are kept until freeObjectCode(),
2823 // which is only called when it has been determined that
2824 // it is safe to unload the object.
2825 stgFree(oc->symbols);
2826
2827 {
2828 Section *s, *nexts;
2829
2830 for (s = oc->sections; s != NULL; s = nexts) {
2831 nexts = s->next;
2832 stgFree(s);
2833 }
2834 }
2835
2836 freeProddableBlocks(oc);
2837
2838 oc->status = OBJECT_UNLOADED;
2839
2840 /* This could be a member of an archive so continue
2841 * unloading other members. */
2842 unloadedAnyObj = HS_BOOL_TRUE;
2843 }
2844 }
2845
2846 if (unloadedAnyObj) {
2847 return 1;
2848 }
2849 else {
2850 errorBelch("unloadObj: can't find `%" PATH_FMT "' to unload", path);
2851 return 0;
2852 }
2853 }
2854
2855 /* -----------------------------------------------------------------------------
2856 * Sanity checking. For each ObjectCode, maintain a list of address ranges
2857 * which may be prodded during relocation, and abort if we try and write
2858 * outside any of these.
2859 */
2860 static void
2861 addProddableBlock ( ObjectCode* oc, void* start, int size )
2862 {
2863 ProddableBlock* pb
2864 = stgMallocBytes(sizeof(ProddableBlock), "addProddableBlock");
2865
2866 IF_DEBUG(linker, debugBelch("addProddableBlock: %p %p %d\n", oc, start, size));
2867 ASSERT(size > 0);
2868 pb->start = start;
2869 pb->size = size;
2870 pb->next = oc->proddables;
2871 oc->proddables = pb;
2872 }
2873
2874 static void
2875 checkProddableBlock (ObjectCode *oc, void *addr, size_t size )
2876 {
2877 ProddableBlock* pb;
2878
2879 for (pb = oc->proddables; pb != NULL; pb = pb->next) {
2880 char* s = (char*)(pb->start);
2881 char* e = s + pb->size;
2882 char* a = (char*)addr;
2883 if (a >= s && (a+size) <= e) return;
2884 }
2885 barf("checkProddableBlock: invalid fixup in runtime linker: %p", addr);
2886 }
2887
2888 static void freeProddableBlocks (ObjectCode *oc)
2889 {
2890 ProddableBlock *pb, *next;
2891
2892 for (pb = oc->proddables; pb != NULL; pb = next) {
2893 next = pb->next;
2894 stgFree(pb);
2895 }
2896 oc->proddables = NULL;
2897 }
2898
2899 /* -----------------------------------------------------------------------------
2900 * Section management.
2901 */
2902 static void
2903 addSection ( ObjectCode* oc, SectionKind kind,
2904 void* start, void* end )
2905 {
2906 Section* s = stgMallocBytes(sizeof(Section), "addSection");
2907 s->start = start;
2908 s->end = end;
2909 s->kind = kind;
2910 s->next = oc->sections;
2911 oc->sections = s;
2912
2913 IF_DEBUG(linker, debugBelch("addSection: %p-%p (size %lld), kind %d\n",
2914 start, ((char*)end)-1, ((long long)(size_t)end) - ((long long)(size_t)start) + 1, kind ));
2915 }
2916
2917
2918 /* --------------------------------------------------------------------------
2919 * Symbol Extras.
2920 * This is about allocating a small chunk of memory for every symbol in the
2921 * object file. We make sure that the SymboLExtras are always "in range" of
2922 * limited-range PC-relative instructions on various platforms by allocating
2923 * them right next to the object code itself.
2924 */
2925
2926 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2927 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2928
2929 /*
2930 ocAllocateSymbolExtras
2931
2932 Allocate additional space at the end of the object file image to make room
2933 for jump islands (powerpc, x86_64, arm) and GOT entries (x86_64).
2934
2935 PowerPC relative branch instructions have a 24 bit displacement field.
2936 As PPC code is always 4-byte-aligned, this yields a +-32MB range.
2937 If a particular imported symbol is outside this range, we have to redirect
2938 the jump to a short piece of new code that just loads the 32bit absolute
2939 address and jumps there.
2940 On x86_64, PC-relative jumps and PC-relative accesses to the GOT are limited
2941 to 32 bits (+-2GB).
2942
2943 This function just allocates space for one SymbolExtra for every
2944 undefined symbol in the object file. The code for the jump islands is
2945 filled in by makeSymbolExtra below.
2946 */
2947
2948 static int ocAllocateSymbolExtras( ObjectCode* oc, int count, int first )
2949 {
2950 #ifdef USE_MMAP
2951 int pagesize, n, m;
2952 #endif
2953 int aligned;
2954 #ifndef USE_MMAP
2955 int misalignment = 0;
2956 #ifdef darwin_HOST_OS
2957 misalignment = oc->misalignment;
2958 #endif
2959 #endif
2960
2961 if( count > 0 )
2962 {
2963 // round up to the nearest 4
2964 aligned = (oc->fileSize + 3) & ~3;
2965
2966 #ifdef USE_MMAP
2967 pagesize = getpagesize();
2968 n = ROUND_UP( oc->fileSize, pagesize );
2969 m = ROUND_UP( aligned + sizeof (SymbolExtra) * count, pagesize );
2970
2971 /* we try to use spare space at the end of the last page of the
2972 * image for the jump islands, but if there isn't enough space
2973 * then we have to map some (anonymously, remembering MAP_32BIT).
2974 */
2975 if( m > n ) // we need to allocate more pages
2976 {
2977 if (USE_CONTIGUOUS_MMAP)
2978 {
2979 /* Keep image and symbol_extras contiguous */
2980 void *new = mmapForLinker(n + (sizeof(SymbolExtra) * count),
2981 MAP_ANONYMOUS, -1);
2982 if (new)
2983 {
2984 memcpy(new, oc->image, oc->fileSize);
2985 munmap(oc->image, n);
2986 oc->image = new;
2987 oc->fileSize = n + (sizeof(SymbolExtra) * count);
2988 oc->symbol_extras = (SymbolExtra *) (oc->image + n);
2989 }
2990 else
2991 oc->symbol_extras = NULL;
2992 }
2993 else
2994 {
2995 oc->symbol_extras = mmapForLinker(sizeof(SymbolExtra) * count,
2996 MAP_ANONYMOUS, -1);
2997 }
2998 }
2999 else
3000 {
3001 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3002 }
3003 #else
3004 oc->image -= misalignment;
3005 oc->image = stgReallocBytes( oc->image,
3006 misalignment +
3007 aligned + sizeof (SymbolExtra) * count,
3008 "ocAllocateSymbolExtras" );
3009 oc->image += misalignment;
3010
3011 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3012 #endif /* USE_MMAP */
3013
3014 memset( oc->symbol_extras, 0, sizeof (SymbolExtra) * count );
3015 }
3016 else
3017 oc->symbol_extras = NULL;
3018
3019 oc->first_symbol_extra = first;
3020 oc->n_symbol_extras = count;
3021
3022 return 1;
3023 }
3024
3025 #endif
3026 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3027
3028 #if defined(arm_HOST_ARCH)
3029
3030 static void
3031 ocFlushInstructionCache( ObjectCode *oc )
3032 {
3033 // Object code
3034 __clear_cache(oc->image, oc->image + oc->fileSize);
3035 // Jump islands
3036 __clear_cache(oc->symbol_extras, &oc->symbol_extras[oc->n_symbol_extras]);
3037 }
3038
3039 #endif
3040
3041 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3042 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3043
3044 static SymbolExtra* makeSymbolExtra( ObjectCode* oc,
3045 unsigned long symbolNumber,
3046 unsigned long target )
3047 {
3048 SymbolExtra *extra;
3049
3050 ASSERT( symbolNumber >= oc->first_symbol_extra
3051 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3052
3053 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3054
3055 #ifdef powerpc_HOST_ARCH
3056 // lis r12, hi16(target)
3057 extra->jumpIsland.lis_r12 = 0x3d80;
3058 extra->jumpIsland.hi_addr = target >> 16;
3059
3060 // ori r12, r12, lo16(target)
3061 extra->jumpIsland.ori_r12_r12 = 0x618c;
3062 extra->jumpIsland.lo_addr = target & 0xffff;
3063
3064 // mtctr r12
3065 extra->jumpIsland.mtctr_r12 = 0x7d8903a6;
3066
3067 // bctr
3068 extra->jumpIsland.bctr = 0x4e800420;
3069 #endif
3070 #ifdef x86_64_HOST_ARCH
3071 // jmp *-14(%rip)
3072 static uint8_t jmp[] = { 0xFF, 0x25, 0xF2, 0xFF, 0xFF, 0xFF };
3073 extra->addr = target;
3074 memcpy(extra->jumpIsland, jmp, 6);
3075 #endif
3076
3077 return extra;
3078 }
3079
3080 #endif
3081 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3082
3083 #ifdef arm_HOST_ARCH
3084 static SymbolExtra* makeArmSymbolExtra( ObjectCode* oc,
3085 unsigned long symbolNumber,
3086 unsigned long target,
3087 int fromThumb,
3088 int toThumb )
3089 {
3090 SymbolExtra *extra;
3091
3092 ASSERT( symbolNumber >= oc->first_symbol_extra
3093 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3094
3095 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3096
3097 // Make sure instruction mode bit is set properly
3098 if (toThumb)
3099 target |= 1;
3100 else
3101 target &= ~1;
3102
3103 if (!fromThumb) {
3104 // In ARM encoding:
3105 // movw r12, #0
3106 // movt r12, #0
3107 // bx r12
3108 uint32_t code[] = { 0xe300c000, 0xe340c000, 0xe12fff1c };
3109
3110 // Patch lower half-word into movw
3111 code[0] |= ((target>>12) & 0xf) << 16;
3112 code[0] |= target & 0xfff;
3113 // Patch upper half-word into movt
3114 target >>= 16;
3115 code[1] |= ((target>>12) & 0xf) << 16;
3116 code[1] |= target & 0xfff;
3117
3118 memcpy(extra->jumpIsland, code, 12);
3119
3120 } else {
3121 // In Thumb encoding:
3122 // movw r12, #0
3123 // movt r12, #0
3124 // bx r12
3125 uint16_t code[] = { 0xf240, 0x0c00,
3126 0xf2c0, 0x0c00,
3127 0x4760 };
3128
3129 // Patch lower half-word into movw
3130 code[0] |= (target>>12) & 0xf;
3131 code[0] |= ((target>>11) & 0x1) << 10;
3132 code[1] |= ((target>>8) & 0x7) << 12;
3133 code[1] |= target & 0xff;
3134 // Patch upper half-word into movt
3135 target >>= 16;
3136 code[2] |= (target>>12) & 0xf;
3137 code[2] |= ((target>>11) & 0x1) << 10;
3138 code[3] |= ((target>>8) & 0x7) << 12;
3139 code[3] |= target & 0xff;
3140
3141 memcpy(extra->jumpIsland, code, 10);
3142 }
3143
3144 return extra;
3145 }
3146 #endif // arm_HOST_ARCH
3147
3148 /* --------------------------------------------------------------------------
3149 * PowerPC specifics (instruction cache flushing)
3150 * ------------------------------------------------------------------------*/
3151
3152 #ifdef powerpc_HOST_ARCH
3153 /*
3154 ocFlushInstructionCache
3155
3156 Flush the data & instruction caches.
3157 Because the PPC has split data/instruction caches, we have to
3158 do that whenever we modify code at runtime.
3159 */
3160
3161 static void
3162 ocFlushInstructionCacheFrom(void* begin, size_t length)
3163 {
3164 size_t n = (length + 3) / 4;
3165 unsigned long* p = begin;
3166
3167 while (n--)
3168 {
3169 __asm__ volatile ( "dcbf 0,%0\n\t"
3170 "sync\n\t"
3171 "icbi 0,%0"
3172 :
3173 : "r" (p)
3174 );
3175 p++;
3176 }
3177 __asm__ volatile ( "sync\n\t"
3178 "isync"
3179 );
3180 }
3181
3182 static void
3183 ocFlushInstructionCache( ObjectCode *oc )
3184 {
3185 /* The main object code */
3186 ocFlushInstructionCacheFrom(oc->image
3187 #ifdef darwin_HOST_OS
3188 + oc->misalignment
3189 #endif
3190 , oc->fileSize);
3191
3192 /* Jump Islands */
3193 ocFlushInstructionCacheFrom(oc->symbol_extras, sizeof(SymbolExtra) * oc->n_symbol_extras);
3194 }
3195 #endif /* powerpc_HOST_ARCH */
3196
3197
3198 /* --------------------------------------------------------------------------
3199 * PEi386 specifics (Win32 targets)
3200 * ------------------------------------------------------------------------*/
3201
3202 /* The information for this linker comes from
3203 Microsoft Portable Executable
3204 and Common Object File Format Specification
3205 revision 5.1 January 1998
3206 which SimonM says comes from the MS Developer Network CDs.
3207
3208 It can be found there (on older CDs), but can also be found
3209 online at:
3210
3211 http://www.microsoft.com/hwdev/hardware/PECOFF.asp
3212
3213 (this is Rev 6.0 from February 1999).
3214
3215 Things move, so if that fails, try searching for it via
3216
3217 http://www.google.com/search?q=PE+COFF+specification
3218
3219 The ultimate reference for the PE format is the Winnt.h
3220 header file that comes with the Platform SDKs; as always,
3221 implementations will drift wrt their documentation.
3222
3223 A good background article on the PE format is Matt Pietrek's
3224 March 1994 article in Microsoft System Journal (MSJ)
3225 (Vol.9, No. 3): "Peering Inside the PE: A Tour of the
3226 Win32 Portable Executable File Format." The info in there
3227 has recently been updated in a two part article in
3228 MSDN magazine, issues Feb and March 2002,
3229 "Inside Windows: An In-Depth Look into the Win32 Portable
3230 Executable File Format"
3231
3232 John Levine's book "Linkers and Loaders" contains useful
3233 info on PE too.
3234 */
3235
3236
3237 #if defined(OBJFORMAT_PEi386)
3238
3239
3240
3241 typedef unsigned char UChar;
3242 typedef unsigned short UInt16;
3243 typedef unsigned int UInt32;
3244 typedef int Int32;
3245 typedef unsigned long long int UInt64;
3246
3247
3248 typedef
3249 struct {
3250 UInt16 Machine;
3251 UInt16 NumberOfSections;
3252 UInt32 TimeDateStamp;
3253 UInt32 PointerToSymbolTable;
3254 UInt32 NumberOfSymbols;
3255 UInt16 SizeOfOptionalHeader;
3256 UInt16 Characteristics;
3257 }
3258 COFF_header;
3259
3260 #define sizeof_COFF_header 20
3261
3262
3263 typedef
3264 struct {
3265 UChar Name[8];
3266 UInt32 VirtualSize;
3267 UInt32 VirtualAddress;
3268 UInt32 SizeOfRawData;
3269 UInt32 PointerToRawData;
3270 UInt32 PointerToRelocations;
3271 UInt32 PointerToLinenumbers;
3272 UInt16 NumberOfRelocations;
3273 UInt16 NumberOfLineNumbers;
3274 UInt32 Characteristics;
3275 }
3276 COFF_section;
3277
3278 #define sizeof_COFF_section 40
3279
3280
3281 typedef
3282 struct {
3283 UChar Name[8];
3284 UInt32 Value;
3285 UInt16 SectionNumber;
3286 UInt16 Type;
3287 UChar StorageClass;
3288 UChar NumberOfAuxSymbols;
3289 }
3290 COFF_symbol;
3291
3292 #define sizeof_COFF_symbol 18
3293
3294
3295 typedef
3296 struct {
3297 UInt32 VirtualAddress;
3298 UInt32 SymbolTableIndex;
3299 UInt16 Type;
3300 }
3301 COFF_reloc;
3302
3303 #define sizeof_COFF_reloc 10
3304
3305
3306 /* From PE spec doc, section 3.3.2 */
3307 /* Note use of MYIMAGE_* since IMAGE_* are already defined in
3308 windows.h -- for the same purpose, but I want to know what I'm
3309 getting, here. */
3310 #define MYIMAGE_FILE_RELOCS_STRIPPED 0x0001
3311 #define MYIMAGE_FILE_EXECUTABLE_IMAGE 0x0002
3312 #define MYIMAGE_FILE_DLL 0x2000
3313 #define MYIMAGE_FILE_SYSTEM 0x1000
3314 #define MYIMAGE_FILE_BYTES_REVERSED_HI 0x8000
3315 #define MYIMAGE_FILE_BYTES_REVERSED_LO 0x0080
3316 #define MYIMAGE_FILE_32BIT_MACHINE 0x0100
3317
3318 /* From PE spec doc, section 5.4.2 and 5.4.4 */
3319 #define MYIMAGE_SYM_CLASS_EXTERNAL 2
3320 #define MYIMAGE_SYM_CLASS_STATIC 3
3321 #define MYIMAGE_SYM_UNDEFINED 0
3322
3323 /* From PE spec doc, section 4.1 */
3324 #define MYIMAGE_SCN_CNT_CODE 0x00000020
3325 #define MYIMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
3326 #define MYIMAGE_SCN_LNK_NRELOC_OVFL 0x01000000
3327
3328 /* From PE spec doc, section 5.2.1 */
3329 #define MYIMAGE_REL_I386_DIR32 0x0006
3330 #define MYIMAGE_REL_I386_REL32 0x0014
3331
3332
3333 /* We use myindex to calculate array addresses, rather than
3334 simply doing the normal subscript thing. That's because
3335 some of the above structs have sizes which are not
3336 a whole number of words. GCC rounds their sizes up to a
3337 whole number of words, which means that the address calcs
3338 arising from using normal C indexing or pointer arithmetic
3339 are just plain wrong. Sigh.
3340 */
3341 static UChar *
3342 myindex ( int scale, void* base, int index )
3343 {
3344 return
3345 ((UChar*)base) + scale * index;
3346 }
3347
3348
3349 static void
3350 printName ( UChar* name, UChar* strtab )
3351 {
3352 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3353 UInt32 strtab_offset = * (UInt32*)(name+4);
3354 debugBelch("%s", strtab + strtab_offset );
3355 } else {
3356 int i;
3357 for (i = 0; i < 8; i++) {
3358 if (name[i] == 0) break;
3359 debugBelch("%c", name[i] );
3360 }
3361 }
3362 }
3363
3364
3365 static void
3366 copyName ( UChar* name, UChar* strtab, UChar* dst, int dstSize )
3367 {
3368 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3369 UInt32 strtab_offset = * (UInt32*)(name+4);
3370 strncpy ( (char*)dst, (char*)strtab+strtab_offset, dstSize );
3371 dst[dstSize-1] = 0;
3372 } else {
3373 int i = 0;
3374 while (1) {
3375 if (i >= 8) break;
3376 if (name[i] == 0) break;
3377 dst[i] = name[i];
3378 i++;
3379 }
3380 dst[i] = 0;
3381 }
3382 }
3383
3384
3385 static UChar *
3386 cstring_from_COFF_symbol_name ( UChar* name, UChar* strtab )
3387 {
3388 UChar* newstr;
3389 /* If the string is longer than 8 bytes, look in the
3390 string table for it -- this will be correctly zero terminated.
3391 */
3392 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3393 UInt32 strtab_offset = * (UInt32*)(name+4);
3394 return ((UChar*)strtab) + strtab_offset;
3395 }
3396 /* Otherwise, if shorter than 8 bytes, return the original,
3397 which by defn is correctly terminated.
3398 */
3399 if (name[7]==0) return name;
3400 /* The annoying case: 8 bytes. Copy into a temporary
3401 (XXX which is never freed ...)
3402 */
3403 newstr = stgMallocBytes(9, "cstring_from_COFF_symbol_name");
3404 ASSERT(newstr);
3405 strncpy((char*)newstr,(char*)name,8);
3406 newstr[8] = 0;
3407 return newstr;
3408 }
3409
3410 /* Getting the name of a section is mildly tricky, so we make a
3411 function for it. Sadly, in one case we have to copy the string
3412 (when it is exactly 8 bytes long there's no trailing '\0'), so for
3413 consistency we *always* copy the string; the caller must free it
3414 */
3415 static char *
3416 cstring_from_section_name (UChar* name, UChar* strtab)
3417 {
3418 char *newstr;
3419
3420 if (name[0]=='/') {
3421 int strtab_offset = strtol((char*)name+1,NULL,10);
3422 int len = strlen(((char*)strtab) + strtab_offset);
3423
3424 newstr = stgMallocBytes(len+1, "cstring_from_section_symbol_name");
3425 strcpy((char*)newstr, (char*)((UChar*)strtab) + strtab_offset);
3426 return newstr;
3427 }
3428 else
3429 {
3430 newstr = stgMallocBytes(9, "cstring_from_section_symbol_name");
3431 ASSERT(newstr);
3432 strncpy((char*)newstr,(char*)name,8);
3433 newstr[8] = 0;
3434 return newstr;
3435 }
3436 }
3437
3438 /* Just compares the short names (first 8 chars) */
3439 static COFF_section *
3440 findPEi386SectionCalled ( ObjectCode* oc, UChar* name )
3441 {
3442 int i;
3443 COFF_header* hdr
3444 = (COFF_header*)(oc->image);
3445 COFF_section* sectab
3446 = (COFF_section*) (
3447 ((UChar*)(oc->image))
3448 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3449 );
3450 for (i = 0; i < hdr->NumberOfSections; i++) {
3451 UChar* n1;
3452 UChar* n2;
3453 COFF_section* section_i
3454 = (COFF_section*)
3455 myindex ( sizeof_COFF_section, sectab, i );
3456 n1 = (UChar*) &(section_i->Name);
3457 n2 = name;
3458 if (n1[0]==n2[0] && n1[1]==n2[1] && n1[2]==n2[2] &&
3459 n1[3]==n2[3] && n1[4]==n2[4] && n1[5]==n2[5] &&
3460 n1[6]==n2[6] && n1[7]==n2[7])
3461 return section_i;
3462 }
3463
3464 return NULL;
3465 }
3466
3467 static void
3468 zapTrailingAtSign ( UChar* sym )
3469 {
3470 # define my_isdigit(c) ((c) >= '0' && (c) <= '9')
3471 int i, j;
3472 if (sym[0] == 0) return;
3473 i = 0;
3474 while (sym[i] != 0) i++;
3475 i--;
3476 j = i;
3477 while (j > 0 && my_isdigit(sym[j])) j--;
3478 if (j > 0 && sym[j] == '@' && j != i) sym[j] = 0;
3479 # undef my_isdigit
3480 }
3481
3482 static void *
3483 lookupSymbolInDLLs ( UChar *lbl )
3484 {
3485 OpenedDLL* o_dll;
3486 void *sym;
3487
3488 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
3489 /* debugBelch("look in %s for %s\n", o_dll->name, lbl); */
3490
3491 if (lbl[0] == '_') {
3492 /* HACK: if the name has an initial underscore, try stripping
3493 it off & look that up first. I've yet to verify whether there's
3494 a Rule that governs whether an initial '_' *should always* be
3495 stripped off when mapping from import lib name to the DLL name.
3496 */
3497 sym = GetProcAddress(o_dll->instance, (char*)(lbl+1));
3498 if (sym != NULL) {
3499 /*debugBelch("found %s in %s\n", lbl+1,o_dll->name);*/
3500 return sym;
3501 }
3502 }
3503 sym = GetProcAddress(o_dll->instance, (char*)lbl);
3504 if (sym != NULL) {
3505 /*debugBelch("found %s in %s\n", lbl,o_dll->name);*/
3506 return sym;
3507 }
3508 }
3509 return NULL;
3510 }
3511
3512
3513 static int
3514 ocVerifyImage_PEi386 ( ObjectCode* oc )
3515 {
3516 int i;
3517 UInt32 j, noRelocs;
3518 COFF_header* hdr;
3519 COFF_section* sectab;
3520 COFF_symbol* symtab;
3521 UChar* strtab;
3522 /* debugBelch("\nLOADING %s\n", oc->fileName); */
3523 hdr = (COFF_header*)(oc->image);
3524 sectab = (COFF_section*) (
3525 ((UChar*)(oc->image))
3526 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3527 );
3528 symtab = (COFF_symbol*) (
3529 ((UChar*)(oc->image))
3530 + hdr->PointerToSymbolTable
3531 );
3532 strtab = ((UChar*)symtab)
3533 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3534
3535 #if defined(i386_HOST_ARCH)
3536 if (hdr->Machine != 0x14c) {
3537 errorBelch("%" PATH_FMT ": Not x86 PEi386", oc->fileName);
3538 return 0;
3539 }
3540 #elif defined(x86_64_HOST_ARCH)
3541 if (hdr->Machine != 0x8664) {
3542 errorBelch("%" PATH_FMT ": Not x86_64 PEi386", oc->fileName);
3543 return 0;
3544 }
3545 #else
3546 errorBelch("PEi386 not supported on this arch");
3547 #endif
3548
3549 if (hdr->SizeOfOptionalHeader != 0) {
3550 errorBelch("%" PATH_FMT ": PEi386 with nonempty optional header", oc->fileName);
3551 return 0;
3552 }
3553 if ( /* (hdr->Characteristics & MYIMAGE_FILE_RELOCS_STRIPPED) || */
3554 (hdr->Characteristics & MYIMAGE_FILE_EXECUTABLE_IMAGE) ||
3555 (hdr->Characteristics & MYIMAGE_FILE_DLL) ||
3556 (hdr->Characteristics & MYIMAGE_FILE_SYSTEM) ) {
3557 errorBelch("%" PATH_FMT ": Not a PEi386 object file", oc->fileName);
3558 return 0;
3559 }
3560 if ( (hdr->Characteristics & MYIMAGE_FILE_BYTES_REVERSED_HI)
3561 /* || !(hdr->Characteristics & MYIMAGE_FILE_32BIT_MACHINE) */ ) {
3562 errorBelch("%" PATH_FMT ": Invalid PEi386 word size or endiannness: %d",
3563 oc->fileName,
3564 (int)(hdr->Characteristics));
3565 return 0;
3566 }
3567 /* If the string table size is way crazy, this might indicate that
3568 there are more than 64k relocations, despite claims to the
3569 contrary. Hence this test. */
3570 /* debugBelch("strtab size %d\n", * (UInt32*)strtab); */
3571 #if 0
3572 if ( (*(UInt32*)strtab) > 600000 ) {
3573 /* Note that 600k has no special significance other than being
3574 big enough to handle the almost-2MB-sized lumps that
3575 constitute HSwin32*.o. */
3576 debugBelch("PEi386 object has suspiciously large string table; > 64k relocs?");
3577 return 0;
3578 }
3579 #endif
3580
3581 /* No further verification after this point; only debug printing. */
3582 i = 0;
3583 IF_DEBUG(linker, i=1);
3584 if (i == 0) return 1;
3585
3586 debugBelch( "sectab offset = %" FMT_Int "\n", ((UChar*)sectab) - ((UChar*)hdr) );
3587 debugBelch( "symtab offset = %" FMT_Int "\n", ((UChar*)symtab) - ((UChar*)hdr) );
3588 debugBelch( "strtab offset = %" FMT_Int "\n", ((UChar*)strtab) - ((UChar*)hdr) );
3589
3590 debugBelch("\n" );
3591 debugBelch( "Machine: 0x%x\n", (UInt32)(hdr->Machine) );
3592 debugBelch( "# sections: %d\n", (UInt32)(hdr->NumberOfSections) );
3593 debugBelch( "time/date: 0x%x\n", (UInt32)(hdr->TimeDateStamp) );
3594 debugBelch( "symtab offset: %d\n", (UInt32)(hdr->PointerToSymbolTable) );
3595 debugBelch( "# symbols: %d\n", (UInt32)(hdr->NumberOfSymbols) );
3596 debugBelch( "sz of opt hdr: %d\n", (UInt32)(hdr->SizeOfOptionalHeader) );
3597 debugBelch( "characteristics: 0x%x\n", (UInt32)(hdr->Characteristics) );
3598
3599 /* Print the section table. */
3600 debugBelch("\n" );
3601 for (i = 0; i < hdr->NumberOfSections; i++) {
3602 COFF_reloc* reltab;
3603 COFF_section* sectab_i
3604 = (COFF_section*)
3605 myindex ( sizeof_COFF_section, sectab, i );
3606 debugBelch(
3607 "\n"
3608 "section %d\n"
3609 " name `",
3610 i
3611 );
3612 printName ( sectab_i->Name, strtab );
3613 debugBelch(
3614 "'\n"
3615 " vsize %d\n"
3616 " vaddr %d\n"
3617 " data sz %d\n"
3618 " data off %d\n"
3619 " num rel %d\n"
3620 " off rel %d\n"
3621 " ptr raw 0x%x\n",
3622 sectab_i->VirtualSize,
3623 sectab_i->VirtualAddress,
3624 sectab_i->SizeOfRawData,
3625 sectab_i->PointerToRawData,
3626 sectab_i->NumberOfRelocations,
3627 sectab_i->PointerToRelocations,
3628 sectab_i->PointerToRawData
3629 );
3630 reltab = (COFF_reloc*) (
3631 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
3632 );
3633
3634 if ( sectab_i->Characteristics & MYIMAGE_SCN_LNK_NRELOC_OVFL ) {
3635 /* If the relocation field (a short) has overflowed, the
3636 * real count can be found in the first reloc entry.
3637 *
3638 * See Section 4.1 (last para) of the PE spec (rev6.0).
3639 */
3640 COFF_reloc* rel = (COFF_reloc*)
3641 myindex ( sizeof_COFF_reloc, reltab, 0 );
3642 noRelocs = rel->VirtualAddress;
3643 j = 1;
3644 } else {
3645 noRelocs = sectab_i->NumberOfRelocations;
3646 j = 0;
3647 }
3648
3649 for (; j < noRelocs; j++) {
3650 COFF_symbol* sym;
3651 COFF_reloc* rel = (COFF_reloc*)
3652 myindex ( sizeof_COFF_reloc, reltab, j );
3653 debugBelch(
3654 " type 0x%-4x vaddr 0x%-8x name `",
3655 (UInt32)rel->Type,
3656 rel->VirtualAddress );
3657 sym = (COFF_symbol*)
3658 myindex ( sizeof_COFF_symbol, symtab, rel->SymbolTableIndex );
3659 /* Hmm..mysterious looking offset - what's it for? SOF */
3660 printName ( sym->Name, strtab -10 );
3661 debugBelch("'\n" );
3662 }
3663
3664 debugBelch("\n" );
3665 }
3666 debugBelch("\n" );
3667 debugBelch("string table has size 0x%x\n", * (UInt32*)strtab );
3668 debugBelch("---START of string table---\n");
3669 for (i = 4; i < *(Int32*)strtab; i++) {
3670 if (strtab[i] == 0)
3671 debugBelch("\n"); else
3672 debugBelch("%c", strtab[i] );
3673 }
3674 debugBelch("--- END of string table---\n");
3675
3676 debugBelch("\n" );
3677 i = 0;
3678 while (1) {
3679 COFF_symbol* symtab_i;
3680 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
3681 symtab_i = (COFF_symbol*)
3682 myindex ( sizeof_COFF_symbol, symtab, i );
3683 debugBelch(
3684 "symbol %d\n"
3685 " name `",
3686 i
3687 );
3688 printName ( symtab_i->Name, strtab );
3689 debugBelch(
3690 "'\n"
3691 " value 0x%x\n"
3692 " 1+sec# %d\n"
3693 " type 0x%x\n"
3694 " sclass 0x%x\n"
3695 " nAux %d\n",
3696 symtab_i->Value,
3697 (Int32)(symtab_i->SectionNumber),
3698 (UInt32)symtab_i->Type,
3699 (UInt32)symtab_i->StorageClass,
3700 (UInt32)symtab_i->NumberOfAuxSymbols
3701 );
3702 i += symtab_i->NumberOfAuxSymbols;
3703 i++;
3704 }
3705
3706 debugBelch("\n" );
3707 return 1;
3708 }
3709
3710
3711 static int
3712 ocGetNames_PEi386 ( ObjectCode* oc )
3713 {
3714 COFF_header* hdr;
3715 COFF_section* sectab;
3716 COFF_symbol* symtab;
3717 UChar* strtab;
3718
3719 UChar* sname;
3720 void* addr;
3721 int i;
3722
3723 hdr = (COFF_header*)(oc->image);
3724 sectab = (COFF_section*) (
3725 ((UChar*)(oc->image))
3726 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3727 );
3728 symtab = (COFF_symbol*) (
3729 ((UChar*)(oc->image))
3730 + hdr->PointerToSymbolTable
3731 );
3732 strtab = ((UChar*)(oc->image))
3733 + hdr->PointerToSymbolTable
3734 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3735
3736 /* Allocate space for any (local, anonymous) .bss sections. */
3737
3738 for (i = 0; i < hdr->NumberOfSections; i++) {
3739 UInt32 bss_sz;
3740 UChar* zspace;
3741 COFF_section* sectab_i
3742 = (COFF_section*)
3743 myindex ( sizeof_COFF_section, sectab, i );
3744
3745 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3746
3747 if (0 != strcmp(secname, ".bss")) {
3748 stgFree(secname);
3749 continue;
3750 }
3751
3752 stgFree(secname);
3753
3754 /* sof 10/05: the PE spec text isn't too clear regarding what
3755 * the SizeOfRawData field is supposed to hold for object
3756 * file sections containing just uninitialized data -- for executables,
3757 * it is supposed to be zero; unclear what it's supposed to be
3758 * for object files. However, VirtualSize is guaranteed to be
3759 * zero for object files, which definitely suggests that SizeOfRawData
3760 * will be non-zero (where else would the size of this .bss section be
3761 * stored?) Looking at the COFF_section info for incoming object files,
3762 * this certainly appears to be the case.
3763 *
3764 * => I suspect we've been incorrectly handling .bss sections in (relocatable)
3765 * object files up until now. This turned out to bite us with ghc-6.4.1's use
3766 * of gcc-3.4.x, which has started to emit initially-zeroed-out local 'static'
3767 * variable decls into the .bss section. (The specific function in Q which
3768 * triggered this is libraries/base/cbits/dirUtils.c:__hscore_getFolderPath())
3769 */
3770 if (sectab_i->VirtualSize == 0 && sectab_i->SizeOfRawData == 0) continue;
3771 /* This is a non-empty .bss section. Allocate zeroed space for
3772 it, and set its PointerToRawData field such that oc->image +
3773 PointerToRawData == addr_of_zeroed_space. */
3774 bss_sz = sectab_i->VirtualSize;
3775 if ( bss_sz < sectab_i->SizeOfRawData) { bss_sz = sectab_i->SizeOfRawData; }
3776 zspace = stgCallocBytes(1, bss_sz, "ocGetNames_PEi386(anonymous bss)");
3777 sectab_i->PointerToRawData = ((UChar*)zspace) - ((UChar*)(oc->image));
3778 addProddableBlock(oc, zspace, bss_sz);
3779 /* debugBelch("BSS anon section at 0x%x\n", zspace); */
3780 }
3781
3782 /* Copy section information into the ObjectCode. */
3783
3784 for (i = 0; i < hdr->NumberOfSections; i++) {
3785 UChar* start;
3786 UChar* end;
3787 UInt32 sz;
3788
3789 SectionKind kind
3790 = SECTIONKIND_OTHER;
3791 COFF_section* sectab_i
3792 = (COFF_section*)
3793 myindex ( sizeof_COFF_section, sectab, i );
3794
3795 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3796
3797 IF_DEBUG(linker, debugBelch("section name = %s\n", secname ));
3798
3799 # if 0
3800 /* I'm sure this is the Right Way to do it. However, the
3801 alternative of testing the sectab_i->Name field seems to
3802 work ok with Cygwin.
3803 */
3804 if (sectab_i->Characteristics & MYIMAGE_SCN_CNT_CODE ||
3805 sectab_i->Characteristics & MYIMAGE_SCN_CNT_INITIALIZED_DATA)
3806 kind = SECTIONKIND_CODE_OR_RODATA;
3807 # endif
3808
3809 if (0==strcmp(".text",(char*)secname) ||
3810 0==strcmp(".text.startup",(char*)secname) ||
3811 0==strcmp(".rdata",(char*)secname)||
3812 0==strcmp(".rodata",(char*)secname))
3813 kind = SECTIONKIND_CODE_OR_RODATA;
3814 if (0==strcmp(".data",(char*)secname) ||
3815 0==strcmp(".bss",(char*)secname))
3816 kind = SECTIONKIND_RWDATA;
3817
3818 ASSERT(sectab_i->SizeOfRawData == 0 || sectab_i->VirtualSize == 0);
3819 sz = sectab_i->SizeOfRawData;
3820 if (sz < sectab_i->VirtualSize) sz = sectab_i->VirtualSize;
3821
3822 start = ((UChar*)(oc->image)) + sectab_i->PointerToRawData;
3823 end = start + sz - 1;
3824
3825 if (kind == SECTIONKIND_OTHER
3826 /* Ignore sections called which contain stabs debugging
3827 information. */
3828 && 0 != strcmp(".stab", (char*)secname)
3829 && 0 != strcmp(".stabstr", (char*)secname)
3830 /* Ignore sections called which contain exception information. */
3831 && 0 != strcmp(".pdata", (char*)secname)
3832 && 0 != strcmp(".xdata", (char*)secname)
3833 /* ignore constructor section for now */
3834 && 0 != strcmp(".ctors", (char*)secname)
3835 /* ignore section generated from .ident */
3836 && 0!= strncmp(".debug", (char*)secname, 6)
3837 /* ignore unknown section that appeared in gcc 3.4.5(?) */
3838 && 0!= strcmp(".reloc", (char*)secname)
3839 && 0 != strcmp(".rdata$zzz", (char*)secname)
3840 ) {
3841 errorBelch("Unknown PEi386 section name `%s' (while processing: %" PATH_FMT")", secname, oc->fileName);
3842 stgFree(secname);
3843 return 0;
3844 }
3845
3846 if (kind != SECTIONKIND_OTHER && end >= start) {
3847 if ((((size_t)(start)) % sizeof(void *)) != 0) {
3848 barf("Misaligned section: %p", start);
3849 }
3850
3851 addSection(oc, kind, start, end);
3852 addProddableBlock(oc, start, end - start + 1);
3853 }
3854
3855 stgFree(secname);
3856 }
3857
3858 /* Copy exported symbols into the ObjectCode. */
3859
3860 oc->n_symbols = hdr->NumberOfSymbols;
3861 oc->symbols = stgMallocBytes(oc->n_symbols * sizeof(char*),
3862 "ocGetNames_PEi386(oc->symbols)");
3863 /* Call me paranoid; I don't care. */
3864 for (i = 0; i < oc->n_symbols; i++)
3865 oc->symbols[i] = NULL;
3866
3867 i = 0;
3868 while (1) {
3869 COFF_symbol* symtab_i;
3870 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
3871 symtab_i = (COFF_symbol*)
3872 myindex ( sizeof_COFF_symbol, symtab, i );
3873
3874 addr = NULL;
3875
3876 if (symtab_i->StorageClass == MYIMAGE_SYM_CLASS_EXTERNAL
3877 && symtab_i->SectionNumber != MYIMAGE_SYM_UNDEFINED) {
3878 /* This symbol is global and defined, viz, exported */
3879 /* for MYIMAGE_SYMCLASS_EXTERNAL
3880 && !MYIMAGE_SYM_UNDEFINED,
3881 the address of the symbol is:
3882 address of relevant section + offset in section
3883 */
3884 COFF_section* sectabent
3885 = (COFF_section*) myindex ( sizeof_COFF_section,
3886 sectab,
3887 symtab_i->SectionNumber-1 );
3888 addr = ((UChar*)(oc->image))
3889 + (sectabent->PointerToRawData
3890 + symtab_i->Value);
3891 }
3892 else
3893 if (symtab_i->SectionNumber == MYIMAGE_SYM_UNDEFINED
3894 && symtab_i->Value > 0) {
3895 /* This symbol isn't in any section at all, ie, global bss.
3896 Allocate zeroed space for it. */
3897 addr = stgCallocBytes(1, symtab_i->Value,
3898 "ocGetNames_PEi386(non-anonymous bss)");
3899 addSection(oc, SECTIONKIND_RWDATA, addr,
3900 ((UChar*)addr) + symtab_i->Value - 1);
3901 addProddableBlock(oc, addr, symtab_i->Value);
3902 /* debugBelch("BSS section at 0x%x\n", addr); */
3903 }
3904
3905 if (addr != NULL ) {
3906 sname = cstring_from_COFF_symbol_name ( symtab_i->Name, strtab );
3907 /* debugBelch("addSymbol %p `%s \n", addr,sname); */
3908 IF_DEBUG(linker, debugBelch("addSymbol %p `%s'\n", addr,sname);)
3909 ASSERT(i >= 0 && i < oc->n_symbols);
3910 /* cstring_from_COFF_symbol_name always succeeds. */
3911 oc->symbols[i] = (char*)sname;
3912 ghciInsertStrHashTable(oc->fileName, symhash, (char*)sname, addr);
3913 } else {
3914 # if 0
3915 debugBelch(
3916 "IGNORING symbol %d\n"
3917 " name `",
3918 i
3919 );
3920 printName ( symtab_i->Name, strtab );
3921 debugBelch(
3922 "'\n"
3923 " value 0x%x\n"
3924 " 1+sec# %d\n"
3925 " type 0x%x\n"
3926 " sclass 0x%x\n"
3927 " nAux %d\n",
3928 symtab_i->Value,
3929 (Int32)(symtab_i->SectionNumber),
3930 (UInt32)symtab_i->Type,
3931 (UInt32)symtab_i->StorageClass,
3932 (UInt32)symtab_i->NumberOfAuxSymbols
3933 );
3934 # endif
3935 }
3936
3937 i += symtab_i->NumberOfAuxSymbols;
3938 i++;
3939 }
3940
3941 return 1;
3942 }
3943
3944
3945 static int
3946 ocResolve_PEi386 ( ObjectCode* oc )
3947 {
3948 COFF_header* hdr;
3949 COFF_section* sectab;
3950 COFF_symbol* symtab;
3951 UChar* strtab;
3952
3953 UInt32 A;
3954 size_t S;
3955 void * pP;
3956
3957 int i;
3958 UInt32 j, noRelocs;
3959
3960 /* ToDo: should be variable-sized? But is at least safe in the
3961 sense of buffer-overrun-proof. */
3962 UChar symbol[1000];
3963 /* debugBelch("resolving for %s\n", oc->fileName); */
3964
3965 hdr = (COFF_header*)(oc->image);
3966 sectab = (COFF_section*) (
3967 ((UChar*)(oc->image))
3968 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3969 );
3970 symtab = (COFF_symbol*) (
3971 ((UChar*)(oc->image))
3972 + hdr->PointerToSymbolTable
3973 );
3974 strtab = ((UChar*)(oc->image))
3975 + hdr->PointerToSymbolTable
3976 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3977
3978 for (i = 0; i < hdr->NumberOfSections; i++) {
3979 COFF_section* sectab_i
3980 = (COFF_section*)
3981 myindex ( sizeof_COFF_section, sectab, i );
3982 COFF_reloc* reltab
3983 = (COFF_reloc*) (
3984 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
3985 );
3986
3987 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3988
3989 /* Ignore sections called which contain stabs debugging
3990 information. */
3991 if (0 == strcmp(".stab", (char*)secname)
3992 || 0 == strcmp(".stabstr", (char*)secname)
3993 || 0 == strcmp(".pdata", (char*)secname)
3994 || 0 == strcmp(".xdata", (char*)secname)
3995 || 0 == strcmp(".ctors", (char*)secname)
3996 || 0 == strncmp(".debug", (char*)secname, 6)
3997 || 0 == strcmp(".rdata$zzz", (char*)secname)) {
3998 stgFree(secname);
3999 continue;
4000 }
4001
4002 stgFree(secname);
4003
4004 if ( sectab_i->Characteristics & MYIMAGE_SCN_LNK_NRELOC_OVFL ) {
4005 /* If the relocation field (a short) has overflowed, the
4006 * real count can be found in the first reloc entry.
4007 *
4008 * See Section 4.1 (last para) of the PE spec (rev6.0).
4009 *
4010 * Nov2003 update: the GNU linker still doesn't correctly
4011 * handle the generation of relocatable object files with
4012 * overflown relocations. Hence the output to warn of potential
4013 * troubles.
4014 */
4015 COFF_reloc* rel = (COFF_reloc*)
4016 myindex ( sizeof_COFF_reloc, reltab, 0 );
4017 noRelocs = rel->VirtualAddress;
4018