Add warning comment about Mach-O section name hack.
[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 #include "GetEnv.h"
33
34 #if !defined(mingw32_HOST_OS)
35 #include "posix/Signals.h"
36 #endif
37
38 // get protos for is*()
39 #include <ctype.h>
40
41 #ifdef HAVE_SYS_TYPES_H
42 #include <sys/types.h>
43 #endif
44
45 #include <inttypes.h>
46 #include <stdlib.h>
47 #include <string.h>
48 #include <stdio.h>
49 #include <assert.h>
50
51 #ifdef HAVE_SYS_STAT_H
52 #include <sys/stat.h>
53 #endif
54
55 #if defined(HAVE_DLFCN_H)
56 #include <dlfcn.h>
57 #endif
58
59 #if defined(cygwin32_HOST_OS)
60 #ifdef HAVE_DIRENT_H
61 #include <dirent.h>
62 #endif
63
64 #ifdef HAVE_SYS_TIME_H
65 #include <sys/time.h>
66 #endif
67 #include <regex.h>
68 #include <sys/fcntl.h>
69 #include <sys/termios.h>
70 #include <sys/utime.h>
71 #include <sys/utsname.h>
72 #include <sys/wait.h>
73 #endif
74
75 #if (defined(powerpc_HOST_ARCH) && defined(linux_HOST_OS)) \
76 || (!defined(powerpc_HOST_ARCH) && \
77 ( defined(linux_HOST_OS) || defined(freebsd_HOST_OS) || \
78 defined(dragonfly_HOST_OS) || defined(netbsd_HOST_OS ) || \
79 defined(openbsd_HOST_OS ) || defined(darwin_HOST_OS ) || \
80 defined(kfreebsdgnu_HOST_OS) || defined(gnu_HOST_OS)))
81 /* Don't use mmap on powerpc_HOST_ARCH as mmap doesn't support
82 * reallocating but we need to allocate jump islands just after each
83 * object images. Otherwise relative branches to jump islands can fail
84 * due to 24-bits displacement overflow.
85 */
86 #define USE_MMAP
87 #include <fcntl.h>
88 #include <sys/mman.h>
89
90 #ifdef HAVE_UNISTD_H
91 #include <unistd.h>
92 #endif
93
94 #endif
95
96
97 /* PowerPC has relative branch instructions with only 24 bit displacements
98 * and therefore needs jump islands contiguous with each object code module.
99 */
100 #if (defined(USE_MMAP) && defined(powerpc_HOST_ARCH) && defined(linux_HOST_OS))
101 #define USE_CONTIGUOUS_MMAP 1
102 #else
103 #define USE_CONTIGUOUS_MMAP 0
104 #endif
105
106 #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)
107 # define OBJFORMAT_ELF
108 # include <regex.h> // regex is already used by dlopen() so this is OK
109 // to use here without requiring an additional lib
110 #elif defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
111 # define OBJFORMAT_PEi386
112 # include <windows.h>
113 # include <math.h>
114 #elif defined(darwin_HOST_OS)
115 # define OBJFORMAT_MACHO
116 # include <regex.h>
117 # include <mach/machine.h>
118 # include <mach-o/fat.h>
119 # include <mach-o/loader.h>
120 # include <mach-o/nlist.h>
121 # include <mach-o/reloc.h>
122 #if !defined(HAVE_DLFCN_H)
123 # include <mach-o/dyld.h>
124 #endif
125 #if defined(powerpc_HOST_ARCH)
126 # include <mach-o/ppc/reloc.h>
127 #endif
128 #if defined(x86_64_HOST_ARCH)
129 # include <mach-o/x86_64/reloc.h>
130 #endif
131 #endif
132
133 #if defined(x86_64_HOST_ARCH) && defined(darwin_HOST_OS)
134 #define ALWAYS_PIC
135 #endif
136
137 #if defined(dragonfly_HOST_OS)
138 #include <sys/tls.h>
139 #endif
140
141 /* Hash table mapping symbol names to Symbol */
142 static /*Str*/HashTable *symhash;
143
144 /* Hash table mapping symbol names to StgStablePtr */
145 static /*Str*/HashTable *stablehash;
146
147 /* List of currently loaded objects */
148 ObjectCode *objects = NULL; /* initially empty */
149
150 /* List of objects that have been unloaded via unloadObj(), but are waiting
151 to be actually freed via checkUnload() */
152 ObjectCode *unloaded_objects = NULL; /* initially empty */
153
154 /* Type of the initializer */
155 typedef void (*init_t) (int argc, char **argv, char **env);
156
157 static HsInt loadOc( ObjectCode* oc );
158 static ObjectCode* mkOc( pathchar *path, char *image, int imageSize,
159 char *archiveMemberName
160 #ifndef USE_MMAP
161 #ifdef darwin_HOST_OS
162 , int misalignment
163 #endif
164 #endif
165 );
166
167 // Use wchar_t for pathnames on Windows (#5697)
168 #if defined(mingw32_HOST_OS)
169 #define pathcmp wcscmp
170 #define pathlen wcslen
171 #define pathopen _wfopen
172 #define pathstat _wstat
173 #define struct_stat struct _stat
174 #define open wopen
175 #define WSTR(s) L##s
176 #else
177 #define pathcmp strcmp
178 #define pathlen strlen
179 #define pathopen fopen
180 #define pathstat stat
181 #define struct_stat struct stat
182 #define WSTR(s) s
183 #endif
184
185 static pathchar* pathdup(pathchar *path)
186 {
187 pathchar *ret;
188 #if defined(mingw32_HOST_OS)
189 ret = wcsdup(path);
190 #else
191 /* sigh, strdup() isn't a POSIX function, so do it the long way */
192 ret = stgMallocBytes( strlen(path)+1, "loadObj" );
193 strcpy(ret, path);
194 #endif
195 return ret;
196 }
197
198
199 #if defined(OBJFORMAT_ELF)
200 static int ocVerifyImage_ELF ( ObjectCode* oc );
201 static int ocGetNames_ELF ( ObjectCode* oc );
202 static int ocResolve_ELF ( ObjectCode* oc );
203 static int ocRunInit_ELF ( ObjectCode* oc );
204 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
205 static int ocAllocateSymbolExtras_ELF ( ObjectCode* oc );
206 #endif
207 #elif defined(OBJFORMAT_PEi386)
208 static int ocVerifyImage_PEi386 ( ObjectCode* oc );
209 static int ocGetNames_PEi386 ( ObjectCode* oc );
210 static int ocResolve_PEi386 ( ObjectCode* oc );
211 static int ocRunInit_PEi386 ( ObjectCode* oc );
212 static void *lookupSymbolInDLLs ( unsigned char *lbl );
213 static void zapTrailingAtSign ( unsigned char *sym );
214 #elif defined(OBJFORMAT_MACHO)
215 static int ocVerifyImage_MachO ( ObjectCode* oc );
216 static int ocGetNames_MachO ( ObjectCode* oc );
217 static int ocResolve_MachO ( ObjectCode* oc );
218 static int ocRunInit_MachO ( ObjectCode* oc );
219
220 #ifndef USE_MMAP
221 static int machoGetMisalignment( FILE * );
222 #endif
223 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
224 static int ocAllocateSymbolExtras_MachO ( ObjectCode* oc );
225 #endif
226 #ifdef powerpc_HOST_ARCH
227 static void machoInitSymbolsWithoutUnderscore( void );
228 #endif
229 #endif
230
231 static void freeProddableBlocks (ObjectCode *oc);
232
233 /* on x86_64 we have a problem with relocating symbol references in
234 * code that was compiled without -fPIC. By default, the small memory
235 * model is used, which assumes that symbol references can fit in a
236 * 32-bit slot. The system dynamic linker makes this work for
237 * references to shared libraries by either (a) allocating a jump
238 * table slot for code references, or (b) moving the symbol at load
239 * time (and copying its contents, if necessary) for data references.
240 *
241 * We unfortunately can't tell whether symbol references are to code
242 * or data. So for now we assume they are code (the vast majority
243 * are), and allocate jump-table slots. Unfortunately this will
244 * SILENTLY generate crashing code for data references. This hack is
245 * enabled by X86_64_ELF_NONPIC_HACK.
246 *
247 * One workaround is to use shared Haskell libraries. This is
248 * coming. Another workaround is to keep the static libraries but
249 * compile them with -fPIC, because that will generate PIC references
250 * to data which can be relocated. The PIC code is still too green to
251 * do this systematically, though.
252 *
253 * See bug #781
254 * See thread http://www.haskell.org/pipermail/cvs-ghc/2007-September/038458.html
255 *
256 * Naming Scheme for Symbol Macros
257 *
258 * SymI_*: symbol is internal to the RTS. It resides in an object
259 * file/library that is statically.
260 * SymE_*: symbol is external to the RTS library. It might be linked
261 * dynamically.
262 *
263 * Sym*_HasProto : the symbol prototype is imported in an include file
264 * or defined explicitly
265 * Sym*_NeedsProto: the symbol is undefined and we add a dummy
266 * default proto extern void sym(void);
267 */
268 #define X86_64_ELF_NONPIC_HACK 1
269
270 /* Link objects into the lower 2Gb on x86_64. GHC assumes the
271 * small memory model on this architecture (see gcc docs,
272 * -mcmodel=small).
273 *
274 * MAP_32BIT not available on OpenBSD/amd64
275 */
276 #if defined(x86_64_HOST_ARCH) && defined(MAP_32BIT)
277 #define TRY_MAP_32BIT MAP_32BIT
278 #else
279 #define TRY_MAP_32BIT 0
280 #endif
281
282 /*
283 * Due to the small memory model (see above), on x86_64 we have to map
284 * all our non-PIC object files into the low 2Gb of the address space
285 * (why 2Gb and not 4Gb? Because all addresses must be reachable
286 * using a 32-bit signed PC-relative offset). On Linux we can do this
287 * using the MAP_32BIT flag to mmap(), however on other OSs
288 * (e.g. *BSD, see #2063, and also on Linux inside Xen, see #2512), we
289 * can't do this. So on these systems, we have to pick a base address
290 * in the low 2Gb of the address space and try to allocate memory from
291 * there.
292 *
293 * We pick a default address based on the OS, but also make this
294 * configurable via an RTS flag (+RTS -xm)
295 */
296 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
297
298 #if defined(MAP_32BIT)
299 // Try to use MAP_32BIT
300 #define MMAP_32BIT_BASE_DEFAULT 0
301 #else
302 // A guess: 1Gb.
303 #define MMAP_32BIT_BASE_DEFAULT 0x40000000
304 #endif
305
306 static void *mmap_32bit_base = (void *)MMAP_32BIT_BASE_DEFAULT;
307 #endif
308
309 /* MAP_ANONYMOUS is MAP_ANON on some systems, e.g. OpenBSD */
310 #if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
311 #define MAP_ANONYMOUS MAP_ANON
312 #endif
313
314 /* -----------------------------------------------------------------------------
315 * Built-in symbols from the RTS
316 */
317
318 typedef struct _RtsSymbolVal {
319 char *lbl;
320 void *addr;
321 } RtsSymbolVal;
322
323 #define Maybe_Stable_Names SymI_HasProto(stg_mkWeakzh) \
324 SymI_HasProto(stg_mkWeakNoFinalizzerzh) \
325 SymI_HasProto(stg_addCFinalizzerToWeakzh) \
326 SymI_HasProto(stg_makeStableNamezh) \
327 SymI_HasProto(stg_finalizzeWeakzh)
328
329 #if !defined (mingw32_HOST_OS)
330 #define RTS_POSIX_ONLY_SYMBOLS \
331 SymI_HasProto(__hscore_get_saved_termios) \
332 SymI_HasProto(__hscore_set_saved_termios) \
333 SymI_HasProto(shutdownHaskellAndSignal) \
334 SymI_HasProto(signal_handlers) \
335 SymI_HasProto(stg_sig_install) \
336 SymI_HasProto(rtsTimerSignal) \
337 SymI_HasProto(atexit) \
338 SymI_NeedsProto(nocldstop)
339 #endif
340
341 #if defined (cygwin32_HOST_OS)
342 #define RTS_MINGW_ONLY_SYMBOLS /**/
343 /* Don't have the ability to read import libs / archives, so
344 * we have to stupidly list a lot of what libcygwin.a
345 * exports; sigh.
346 */
347 #define RTS_CYGWIN_ONLY_SYMBOLS \
348 SymI_HasProto(regfree) \
349 SymI_HasProto(regexec) \
350 SymI_HasProto(regerror) \
351 SymI_HasProto(regcomp) \
352 SymI_HasProto(__errno) \
353 SymI_HasProto(access) \
354 SymI_HasProto(chmod) \
355 SymI_HasProto(chdir) \
356 SymI_HasProto(close) \
357 SymI_HasProto(creat) \
358 SymI_HasProto(dup) \
359 SymI_HasProto(dup2) \
360 SymI_HasProto(fstat) \
361 SymI_HasProto(fcntl) \
362 SymI_HasProto(getcwd) \
363 SymI_HasProto(getenv) \
364 SymI_HasProto(lseek) \
365 SymI_HasProto(open) \
366 SymI_HasProto(fpathconf) \
367 SymI_HasProto(pathconf) \
368 SymI_HasProto(stat) \
369 SymI_HasProto(pow) \
370 SymI_HasProto(tanh) \
371 SymI_HasProto(cosh) \
372 SymI_HasProto(sinh) \
373 SymI_HasProto(atan) \
374 SymI_HasProto(acos) \
375 SymI_HasProto(asin) \
376 SymI_HasProto(tan) \
377 SymI_HasProto(cos) \
378 SymI_HasProto(sin) \
379 SymI_HasProto(exp) \
380 SymI_HasProto(log) \
381 SymI_HasProto(sqrt) \
382 SymI_HasProto(localtime_r) \
383 SymI_HasProto(gmtime_r) \
384 SymI_HasProto(mktime) \
385 SymI_NeedsProto(_imp___tzname) \
386 SymI_HasProto(gettimeofday) \
387 SymI_HasProto(timezone) \
388 SymI_HasProto(tcgetattr) \
389 SymI_HasProto(tcsetattr) \
390 SymI_HasProto(memcpy) \
391 SymI_HasProto(memmove) \
392 SymI_HasProto(realloc) \
393 SymI_HasProto(malloc) \
394 SymI_HasProto(free) \
395 SymI_HasProto(fork) \
396 SymI_HasProto(lstat) \
397 SymI_HasProto(isatty) \
398 SymI_HasProto(mkdir) \
399 SymI_HasProto(opendir) \
400 SymI_HasProto(readdir) \
401 SymI_HasProto(rewinddir) \
402 SymI_HasProto(closedir) \
403 SymI_HasProto(link) \
404 SymI_HasProto(mkfifo) \
405 SymI_HasProto(pipe) \
406 SymI_HasProto(read) \
407 SymI_HasProto(rename) \
408 SymI_HasProto(rmdir) \
409 SymI_HasProto(select) \
410 SymI_HasProto(system) \
411 SymI_HasProto(write) \
412 SymI_HasProto(strcmp) \
413 SymI_HasProto(strcpy) \
414 SymI_HasProto(strncpy) \
415 SymI_HasProto(strerror) \
416 SymI_HasProto(sigaddset) \
417 SymI_HasProto(sigemptyset) \
418 SymI_HasProto(sigprocmask) \
419 SymI_HasProto(umask) \
420 SymI_HasProto(uname) \
421 SymI_HasProto(unlink) \
422 SymI_HasProto(utime) \
423 SymI_HasProto(waitpid)
424
425 #elif defined(mingw32_HOST_OS)
426 #define RTS_POSIX_ONLY_SYMBOLS /**/
427 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
428
429 #if HAVE_GETTIMEOFDAY
430 #define RTS_MINGW_GETTIMEOFDAY_SYM SymI_NeedsProto(gettimeofday)
431 #else
432 #define RTS_MINGW_GETTIMEOFDAY_SYM /**/
433 #endif
434
435 #if HAVE___MINGW_VFPRINTF
436 #define RTS___MINGW_VFPRINTF_SYM SymI_HasProto(__mingw_vfprintf)
437 #else
438 #define RTS___MINGW_VFPRINTF_SYM /**/
439 #endif
440
441 #if defined(i386_HOST_ARCH)
442 #define RTS_WIN32_ONLY(X) X
443 #else
444 #define RTS_WIN32_ONLY(X) /**/
445 #endif
446
447 #if defined(x86_64_HOST_ARCH)
448 #define RTS_WIN64_ONLY(X) X
449 #else
450 #define RTS_WIN64_ONLY(X) /**/
451 #endif
452
453 /* These are statically linked from the mingw libraries into the ghc
454 executable, so we have to employ this hack. */
455 #define RTS_MINGW_ONLY_SYMBOLS \
456 SymI_HasProto(stg_asyncReadzh) \
457 SymI_HasProto(stg_asyncWritezh) \
458 SymI_HasProto(stg_asyncDoProczh) \
459 SymI_HasProto(getWin32ProgArgv) \
460 SymI_HasProto(setWin32ProgArgv) \
461 SymI_HasProto(memset) \
462 SymI_HasProto(inet_ntoa) \
463 SymI_HasProto(inet_addr) \
464 SymI_HasProto(htonl) \
465 SymI_HasProto(recvfrom) \
466 SymI_HasProto(listen) \
467 SymI_HasProto(bind) \
468 SymI_HasProto(shutdown) \
469 SymI_HasProto(connect) \
470 SymI_HasProto(htons) \
471 SymI_HasProto(ntohs) \
472 SymI_HasProto(getservbyname) \
473 SymI_HasProto(getservbyport) \
474 SymI_HasProto(getprotobynumber) \
475 SymI_HasProto(getprotobyname) \
476 SymI_HasProto(gethostbyname) \
477 SymI_HasProto(gethostbyaddr) \
478 SymI_HasProto(gethostname) \
479 SymI_HasProto(strcpy) \
480 SymI_HasProto(strncpy) \
481 SymI_HasProto(abort) \
482 RTS_WIN32_ONLY(SymI_NeedsProto(_alloca)) \
483 SymI_HasProto(isxdigit) \
484 SymI_HasProto(isupper) \
485 SymI_HasProto(ispunct) \
486 SymI_HasProto(islower) \
487 SymI_HasProto(isspace) \
488 SymI_HasProto(isprint) \
489 SymI_HasProto(isdigit) \
490 SymI_HasProto(iscntrl) \
491 SymI_HasProto(isalpha) \
492 SymI_HasProto(isalnum) \
493 SymI_HasProto(isascii) \
494 RTS___MINGW_VFPRINTF_SYM \
495 SymI_HasProto(strcmp) \
496 SymI_HasProto(memmove) \
497 SymI_HasProto(realloc) \
498 SymI_HasProto(malloc) \
499 SymI_HasProto(pow) \
500 SymI_HasProto(tanh) \
501 SymI_HasProto(cosh) \
502 SymI_HasProto(sinh) \
503 SymI_HasProto(atan) \
504 SymI_HasProto(acos) \
505 SymI_HasProto(asin) \
506 SymI_HasProto(tan) \
507 SymI_HasProto(cos) \
508 SymI_HasProto(sin) \
509 SymI_HasProto(exp) \
510 SymI_HasProto(log) \
511 SymI_HasProto(sqrt) \
512 SymI_HasProto(powf) \
513 SymI_HasProto(tanhf) \
514 SymI_HasProto(coshf) \
515 SymI_HasProto(sinhf) \
516 SymI_HasProto(atanf) \
517 SymI_HasProto(acosf) \
518 SymI_HasProto(asinf) \
519 SymI_HasProto(tanf) \
520 SymI_HasProto(cosf) \
521 SymI_HasProto(sinf) \
522 SymI_HasProto(expf) \
523 SymI_HasProto(logf) \
524 SymI_HasProto(sqrtf) \
525 SymI_HasProto(erf) \
526 SymI_HasProto(erfc) \
527 SymI_HasProto(erff) \
528 SymI_HasProto(erfcf) \
529 SymI_HasProto(memcpy) \
530 SymI_HasProto(rts_InstallConsoleEvent) \
531 SymI_HasProto(rts_ConsoleHandlerDone) \
532 SymI_NeedsProto(mktime) \
533 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___timezone)) \
534 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___tzname)) \
535 RTS_WIN32_ONLY(SymI_NeedsProto(_imp__tzname)) \
536 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___iob)) \
537 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___osver)) \
538 SymI_NeedsProto(localtime) \
539 SymI_NeedsProto(gmtime) \
540 SymI_NeedsProto(opendir) \
541 SymI_NeedsProto(readdir) \
542 SymI_NeedsProto(rewinddir) \
543 RTS_WIN32_ONLY(SymI_NeedsProto(_imp____mb_cur_max)) \
544 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___pctype)) \
545 RTS_WIN32_ONLY(SymI_NeedsProto(__chkstk)) \
546 RTS_WIN64_ONLY(SymI_NeedsProto(__imp___iob_func)) \
547 RTS_WIN64_ONLY(SymI_NeedsProto(___chkstk_ms)) \
548 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_localeconv)) \
549 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_islower)) \
550 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isspace)) \
551 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isxdigit)) \
552 RTS_WIN64_ONLY(SymI_HasProto(close)) \
553 RTS_WIN64_ONLY(SymI_HasProto(read)) \
554 RTS_WIN64_ONLY(SymI_HasProto(dup)) \
555 RTS_WIN64_ONLY(SymI_HasProto(dup2)) \
556 RTS_WIN64_ONLY(SymI_HasProto(write)) \
557 SymI_NeedsProto(getpid) \
558 RTS_WIN64_ONLY(SymI_HasProto(access)) \
559 SymI_HasProto(chmod) \
560 RTS_WIN64_ONLY(SymI_HasProto(creat)) \
561 RTS_WIN64_ONLY(SymI_HasProto(umask)) \
562 SymI_HasProto(unlink) \
563 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__errno)) \
564 RTS_WIN64_ONLY(SymI_NeedsProto(ftruncate64)) \
565 RTS_WIN64_ONLY(SymI_HasProto(setmode)) \
566 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wstat64)) \
567 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__fstat64)) \
568 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wsopen)) \
569 RTS_WIN64_ONLY(SymI_HasProto(__imp__environ)) \
570 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileAttributesA)) \
571 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileInformationByHandle)) \
572 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileType)) \
573 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetLastError)) \
574 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceFrequency)) \
575 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceCounter)) \
576 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetTickCount)) \
577 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WaitForSingleObject)) \
578 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekConsoleInputA)) \
579 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ReadConsoleInputA)) \
580 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekNamedPipe)) \
581 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__isatty)) \
582 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_select)) \
583 RTS_WIN64_ONLY(SymI_HasProto(isatty)) \
584 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__get_osfhandle)) \
585 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetConsoleMode)) \
586 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetConsoleMode)) \
587 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FlushConsoleInputBuffer)) \
588 RTS_WIN64_ONLY(SymI_HasProto(free)) \
589 RTS_WIN64_ONLY(SymI_NeedsProto(raise)) \
590 RTS_WIN64_ONLY(SymI_NeedsProto(_getpid)) \
591 RTS_WIN64_ONLY(SymI_HasProto(getc)) \
592 RTS_WIN64_ONLY(SymI_HasProto(ungetc)) \
593 RTS_WIN64_ONLY(SymI_HasProto(puts)) \
594 RTS_WIN64_ONLY(SymI_HasProto(putc)) \
595 RTS_WIN64_ONLY(SymI_HasProto(putchar)) \
596 RTS_WIN64_ONLY(SymI_HasProto(fputc)) \
597 RTS_WIN64_ONLY(SymI_HasProto(fread)) \
598 RTS_WIN64_ONLY(SymI_HasProto(fwrite)) \
599 RTS_WIN64_ONLY(SymI_HasProto(ferror)) \
600 RTS_WIN64_ONLY(SymI_HasProto(printf)) \
601 RTS_WIN64_ONLY(SymI_HasProto(fprintf)) \
602 RTS_WIN64_ONLY(SymI_HasProto(sprintf)) \
603 RTS_WIN64_ONLY(SymI_HasProto(vsprintf)) \
604 RTS_WIN64_ONLY(SymI_HasProto(sscanf)) \
605 RTS_WIN64_ONLY(SymI_HasProto(ldexp)) \
606 RTS_WIN64_ONLY(SymI_HasProto(strlen)) \
607 RTS_WIN64_ONLY(SymI_HasProto(strnlen)) \
608 RTS_WIN64_ONLY(SymI_HasProto(strchr)) \
609 RTS_WIN64_ONLY(SymI_HasProto(strtol)) \
610 RTS_WIN64_ONLY(SymI_HasProto(strerror)) \
611 RTS_WIN64_ONLY(SymI_HasProto(memchr)) \
612 RTS_WIN64_ONLY(SymI_HasProto(memcmp)) \
613 RTS_WIN64_ONLY(SymI_HasProto(wcscpy)) \
614 RTS_WIN64_ONLY(SymI_HasProto(wcslen)) \
615 RTS_WIN64_ONLY(SymI_HasProto(_lseeki64)) \
616 RTS_WIN64_ONLY(SymI_HasProto(_wchmod)) \
617 RTS_WIN64_ONLY(SymI_HasProto(closesocket)) \
618 RTS_WIN64_ONLY(SymI_HasProto(send)) \
619 RTS_WIN64_ONLY(SymI_HasProto(recv)) \
620 RTS_WIN64_ONLY(SymI_HasProto(bsearch)) \
621 RTS_WIN64_ONLY(SymI_HasProto(CommandLineToArgvW)) \
622 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmap)) \
623 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmapIndirect)) \
624 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleBitmap)) \
625 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBPatternBrushPt)) \
626 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBitmap)) \
627 RTS_WIN64_ONLY(SymI_HasProto(SetBitmapDimensionEx)) \
628 RTS_WIN64_ONLY(SymI_HasProto(GetBitmapDimensionEx)) \
629 RTS_WIN64_ONLY(SymI_HasProto(GetStockObject)) \
630 RTS_WIN64_ONLY(SymI_HasProto(GetObjectW)) \
631 RTS_WIN64_ONLY(SymI_HasProto(DeleteObject)) \
632 RTS_WIN64_ONLY(SymI_HasProto(SetDIBits)) \
633 RTS_WIN64_ONLY(SymI_HasProto(GetDIBits)) \
634 RTS_WIN64_ONLY(SymI_HasProto(CreateSolidBrush)) \
635 RTS_WIN64_ONLY(SymI_HasProto(CreateHatchBrush)) \
636 RTS_WIN64_ONLY(SymI_HasProto(CreatePatternBrush)) \
637 RTS_WIN64_ONLY(SymI_HasProto(CreateFontW)) \
638 RTS_WIN64_ONLY(SymI_HasProto(AngleArc)) \
639 RTS_WIN64_ONLY(SymI_HasProto(Arc)) \
640 RTS_WIN64_ONLY(SymI_HasProto(ArcTo)) \
641 RTS_WIN64_ONLY(SymI_HasProto(BeginPath)) \
642 RTS_WIN64_ONLY(SymI_HasProto(BitBlt)) \
643 RTS_WIN64_ONLY(SymI_HasProto(CancelDC)) \
644 RTS_WIN64_ONLY(SymI_HasProto(Chord)) \
645 RTS_WIN64_ONLY(SymI_HasProto(CloseFigure)) \
646 RTS_WIN64_ONLY(SymI_HasProto(CombineRgn)) \
647 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleDC)) \
648 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgn)) \
649 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgnIndirect)) \
650 RTS_WIN64_ONLY(SymI_HasProto(CreatePen)) \
651 RTS_WIN64_ONLY(SymI_HasProto(CreatePolygonRgn)) \
652 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgn)) \
653 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgnIndirect)) \
654 RTS_WIN64_ONLY(SymI_HasProto(CreateRoundRectRgn)) \
655 RTS_WIN64_ONLY(SymI_HasProto(DeleteDC)) \
656 RTS_WIN64_ONLY(SymI_HasProto(Ellipse)) \
657 RTS_WIN64_ONLY(SymI_HasProto(EndPath)) \
658 RTS_WIN64_ONLY(SymI_HasProto(EqualRgn)) \
659 RTS_WIN64_ONLY(SymI_HasProto(ExtSelectClipRgn)) \
660 RTS_WIN64_ONLY(SymI_HasProto(FillPath)) \
661 RTS_WIN64_ONLY(SymI_HasProto(FillRgn)) \
662 RTS_WIN64_ONLY(SymI_HasProto(FlattenPath)) \
663 RTS_WIN64_ONLY(SymI_HasProto(FrameRgn)) \
664 RTS_WIN64_ONLY(SymI_HasProto(GetArcDirection)) \
665 RTS_WIN64_ONLY(SymI_HasProto(GetBkColor)) \
666 RTS_WIN64_ONLY(SymI_HasProto(GetBkMode)) \
667 RTS_WIN64_ONLY(SymI_HasProto(GetBrushOrgEx)) \
668 RTS_WIN64_ONLY(SymI_HasProto(GetCurrentObject)) \
669 RTS_WIN64_ONLY(SymI_HasProto(GetDCOrgEx)) \
670 RTS_WIN64_ONLY(SymI_HasProto(GetGraphicsMode)) \
671 RTS_WIN64_ONLY(SymI_HasProto(GetMiterLimit)) \
672 RTS_WIN64_ONLY(SymI_HasProto(GetPolyFillMode)) \
673 RTS_WIN64_ONLY(SymI_HasProto(GetRgnBox)) \
674 RTS_WIN64_ONLY(SymI_HasProto(GetStretchBltMode)) \
675 RTS_WIN64_ONLY(SymI_HasProto(GetTextAlign)) \
676 RTS_WIN64_ONLY(SymI_HasProto(GetTextCharacterExtra)) \
677 RTS_WIN64_ONLY(SymI_HasProto(GetTextColor)) \
678 RTS_WIN64_ONLY(SymI_HasProto(GetTextExtentPoint32W)) \
679 RTS_WIN64_ONLY(SymI_HasProto(InvertRgn)) \
680 RTS_WIN64_ONLY(SymI_HasProto(LineTo)) \
681 RTS_WIN64_ONLY(SymI_HasProto(MaskBlt)) \
682 RTS_WIN64_ONLY(SymI_HasProto(MoveToEx)) \
683 RTS_WIN64_ONLY(SymI_HasProto(OffsetRgn)) \
684 RTS_WIN64_ONLY(SymI_HasProto(PaintRgn)) \
685 RTS_WIN64_ONLY(SymI_HasProto(PathToRegion)) \
686 RTS_WIN64_ONLY(SymI_HasProto(Pie)) \
687 RTS_WIN64_ONLY(SymI_HasProto(PlgBlt)) \
688 RTS_WIN64_ONLY(SymI_HasProto(PolyBezier)) \
689 RTS_WIN64_ONLY(SymI_HasProto(PolyBezierTo)) \
690 RTS_WIN64_ONLY(SymI_HasProto(Polygon)) \
691 RTS_WIN64_ONLY(SymI_HasProto(Polyline)) \
692 RTS_WIN64_ONLY(SymI_HasProto(PolylineTo)) \
693 RTS_WIN64_ONLY(SymI_HasProto(PtInRegion)) \
694 RTS_WIN64_ONLY(SymI_HasProto(Rectangle)) \
695 RTS_WIN64_ONLY(SymI_HasProto(RectInRegion)) \
696 RTS_WIN64_ONLY(SymI_HasProto(RestoreDC)) \
697 RTS_WIN64_ONLY(SymI_HasProto(RoundRect)) \
698 RTS_WIN64_ONLY(SymI_HasProto(SaveDC)) \
699 RTS_WIN64_ONLY(SymI_HasProto(SelectClipPath)) \
700 RTS_WIN64_ONLY(SymI_HasProto(SelectClipRgn)) \
701 RTS_WIN64_ONLY(SymI_HasProto(SelectObject)) \
702 RTS_WIN64_ONLY(SymI_HasProto(SelectPalette)) \
703 RTS_WIN64_ONLY(SymI_HasProto(SetArcDirection)) \
704 RTS_WIN64_ONLY(SymI_HasProto(SetBkColor)) \
705 RTS_WIN64_ONLY(SymI_HasProto(SetBkMode)) \
706 RTS_WIN64_ONLY(SymI_HasProto(SetBrushOrgEx)) \
707 RTS_WIN64_ONLY(SymI_HasProto(SetGraphicsMode)) \
708 RTS_WIN64_ONLY(SymI_HasProto(SetMiterLimit)) \
709 RTS_WIN64_ONLY(SymI_HasProto(SetPolyFillMode)) \
710 RTS_WIN64_ONLY(SymI_HasProto(SetStretchBltMode)) \
711 RTS_WIN64_ONLY(SymI_HasProto(SetTextAlign)) \
712 RTS_WIN64_ONLY(SymI_HasProto(SetTextCharacterExtra)) \
713 RTS_WIN64_ONLY(SymI_HasProto(SetTextColor)) \
714 RTS_WIN64_ONLY(SymI_HasProto(StretchBlt)) \
715 RTS_WIN64_ONLY(SymI_HasProto(StrokeAndFillPath)) \
716 RTS_WIN64_ONLY(SymI_HasProto(StrokePath)) \
717 RTS_WIN64_ONLY(SymI_HasProto(TextOutW)) \
718 RTS_WIN64_ONLY(SymI_HasProto(timeGetTime)) \
719 RTS_WIN64_ONLY(SymI_HasProto(WidenPath)) \
720 RTS_WIN64_ONLY(SymI_HasProto(GetFileSecurityW)) \
721 RTS_WIN64_ONLY(SymI_HasProto(RegCloseKey)) \
722 RTS_WIN64_ONLY(SymI_HasProto(RegConnectRegistryW)) \
723 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyExW)) \
724 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyW)) \
725 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteKeyW)) \
726 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteValueW)) \
727 RTS_WIN64_ONLY(SymI_HasProto(RegEnumKeyW)) \
728 RTS_WIN64_ONLY(SymI_HasProto(RegEnumValueW)) \
729 RTS_WIN64_ONLY(SymI_HasProto(RegFlushKey)) \
730 RTS_WIN64_ONLY(SymI_HasProto(RegLoadKeyW)) \
731 RTS_WIN64_ONLY(SymI_HasProto(RegNotifyChangeKeyValue)) \
732 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyExW)) \
733 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyW)) \
734 RTS_WIN64_ONLY(SymI_HasProto(RegQueryInfoKeyW)) \
735 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueExW)) \
736 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueW)) \
737 RTS_WIN64_ONLY(SymI_HasProto(RegReplaceKeyW)) \
738 RTS_WIN64_ONLY(SymI_HasProto(RegRestoreKeyW)) \
739 RTS_WIN64_ONLY(SymI_HasProto(RegSaveKeyW)) \
740 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueExW)) \
741 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueW)) \
742 RTS_WIN64_ONLY(SymI_HasProto(RegUnLoadKeyW)) \
743 RTS_WIN64_ONLY(SymI_NeedsProto(SHGetFolderPathW)) \
744 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetWindowLongPtrW)) \
745 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetWindowLongPtrW)) \
746 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_MenuItemFromPoint)) \
747 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPoint)) \
748 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPointEx)) \
749 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DeleteObject)) \
750 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_UnmapViewOfFile)) \
751 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CloseHandle)) \
752 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FreeLibrary)) \
753 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetMessageW)) \
754 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TranslateMessage)) \
755 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DispatchMessageW)) \
756 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DefWindowProcW)) \
757 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetDIBits)) \
758 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalAlloc)) \
759 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalFree)) \
760 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateFileW)) \
761 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WriteFile)) \
762 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateCompatibleBitmap)) \
763 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SelectObject)) \
764 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_Polygon)) \
765 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FormatMessageW)) \
766 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__localtime64)) \
767 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__tzname)) \
768 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__timezone)) \
769 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreatePipe)) \
770 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetHandleInformation)) \
771 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetStdHandle)) \
772 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetCurrentProcess)) \
773 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DuplicateHandle)) \
774 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateProcessW)) \
775 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TerminateProcess)) \
776 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__open_osfhandle)) \
777 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetExitCodeProcess)) \
778 RTS_MINGW_GETTIMEOFDAY_SYM \
779 SymI_NeedsProto(closedir)
780
781 #else
782 #define RTS_MINGW_ONLY_SYMBOLS /**/
783 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
784 #endif
785
786
787 #if defined(darwin_HOST_OS) && HAVE_PRINTF_LDBLSTUB
788 #define RTS_DARWIN_ONLY_SYMBOLS \
789 SymI_NeedsProto(asprintf$LDBLStub) \
790 SymI_NeedsProto(err$LDBLStub) \
791 SymI_NeedsProto(errc$LDBLStub) \
792 SymI_NeedsProto(errx$LDBLStub) \
793 SymI_NeedsProto(fprintf$LDBLStub) \
794 SymI_NeedsProto(fscanf$LDBLStub) \
795 SymI_NeedsProto(fwprintf$LDBLStub) \
796 SymI_NeedsProto(fwscanf$LDBLStub) \
797 SymI_NeedsProto(printf$LDBLStub) \
798 SymI_NeedsProto(scanf$LDBLStub) \
799 SymI_NeedsProto(snprintf$LDBLStub) \
800 SymI_NeedsProto(sprintf$LDBLStub) \
801 SymI_NeedsProto(sscanf$LDBLStub) \
802 SymI_NeedsProto(strtold$LDBLStub) \
803 SymI_NeedsProto(swprintf$LDBLStub) \
804 SymI_NeedsProto(swscanf$LDBLStub) \
805 SymI_NeedsProto(syslog$LDBLStub) \
806 SymI_NeedsProto(vasprintf$LDBLStub) \
807 SymI_NeedsProto(verr$LDBLStub) \
808 SymI_NeedsProto(verrc$LDBLStub) \
809 SymI_NeedsProto(verrx$LDBLStub) \
810 SymI_NeedsProto(vfprintf$LDBLStub) \
811 SymI_NeedsProto(vfscanf$LDBLStub) \
812 SymI_NeedsProto(vfwprintf$LDBLStub) \
813 SymI_NeedsProto(vfwscanf$LDBLStub) \
814 SymI_NeedsProto(vprintf$LDBLStub) \
815 SymI_NeedsProto(vscanf$LDBLStub) \
816 SymI_NeedsProto(vsnprintf$LDBLStub) \
817 SymI_NeedsProto(vsprintf$LDBLStub) \
818 SymI_NeedsProto(vsscanf$LDBLStub) \
819 SymI_NeedsProto(vswprintf$LDBLStub) \
820 SymI_NeedsProto(vswscanf$LDBLStub) \
821 SymI_NeedsProto(vsyslog$LDBLStub) \
822 SymI_NeedsProto(vwarn$LDBLStub) \
823 SymI_NeedsProto(vwarnc$LDBLStub) \
824 SymI_NeedsProto(vwarnx$LDBLStub) \
825 SymI_NeedsProto(vwprintf$LDBLStub) \
826 SymI_NeedsProto(vwscanf$LDBLStub) \
827 SymI_NeedsProto(warn$LDBLStub) \
828 SymI_NeedsProto(warnc$LDBLStub) \
829 SymI_NeedsProto(warnx$LDBLStub) \
830 SymI_NeedsProto(wcstold$LDBLStub) \
831 SymI_NeedsProto(wprintf$LDBLStub) \
832 SymI_NeedsProto(wscanf$LDBLStub)
833 #else
834 #define RTS_DARWIN_ONLY_SYMBOLS
835 #endif
836
837 #ifndef SMP
838 # define MAIN_CAP_SYM SymI_HasProto(MainCapability)
839 #else
840 # define MAIN_CAP_SYM
841 #endif
842
843 #if !defined(mingw32_HOST_OS)
844 #define RTS_USER_SIGNALS_SYMBOLS \
845 SymI_HasProto(setIOManagerControlFd) \
846 SymI_HasProto(setIOManagerWakeupFd) \
847 SymI_HasProto(ioManagerWakeup) \
848 SymI_HasProto(blockUserSignals) \
849 SymI_HasProto(unblockUserSignals)
850 #else
851 #define RTS_USER_SIGNALS_SYMBOLS \
852 SymI_HasProto(ioManagerWakeup) \
853 SymI_HasProto(sendIOManagerEvent) \
854 SymI_HasProto(readIOManagerEvent) \
855 SymI_HasProto(getIOManagerEvent) \
856 SymI_HasProto(console_handler)
857 #endif
858
859 #define RTS_LIBFFI_SYMBOLS \
860 SymE_NeedsProto(ffi_prep_cif) \
861 SymE_NeedsProto(ffi_call) \
862 SymE_NeedsProto(ffi_type_void) \
863 SymE_NeedsProto(ffi_type_float) \
864 SymE_NeedsProto(ffi_type_double) \
865 SymE_NeedsProto(ffi_type_sint64) \
866 SymE_NeedsProto(ffi_type_uint64) \
867 SymE_NeedsProto(ffi_type_sint32) \
868 SymE_NeedsProto(ffi_type_uint32) \
869 SymE_NeedsProto(ffi_type_sint16) \
870 SymE_NeedsProto(ffi_type_uint16) \
871 SymE_NeedsProto(ffi_type_sint8) \
872 SymE_NeedsProto(ffi_type_uint8) \
873 SymE_NeedsProto(ffi_type_pointer)
874
875 #ifdef TABLES_NEXT_TO_CODE
876 #define RTS_RET_SYMBOLS /* nothing */
877 #else
878 #define RTS_RET_SYMBOLS \
879 SymI_HasProto(stg_enter_ret) \
880 SymI_HasProto(stg_gc_fun_ret) \
881 SymI_HasProto(stg_ap_v_ret) \
882 SymI_HasProto(stg_ap_f_ret) \
883 SymI_HasProto(stg_ap_d_ret) \
884 SymI_HasProto(stg_ap_l_ret) \
885 SymI_HasProto(stg_ap_v16_ret) \
886 SymI_HasProto(stg_ap_n_ret) \
887 SymI_HasProto(stg_ap_p_ret) \
888 SymI_HasProto(stg_ap_pv_ret) \
889 SymI_HasProto(stg_ap_pp_ret) \
890 SymI_HasProto(stg_ap_ppv_ret) \
891 SymI_HasProto(stg_ap_ppp_ret) \
892 SymI_HasProto(stg_ap_pppv_ret) \
893 SymI_HasProto(stg_ap_pppp_ret) \
894 SymI_HasProto(stg_ap_ppppp_ret) \
895 SymI_HasProto(stg_ap_pppppp_ret)
896 #endif
897
898 /* Modules compiled with -ticky may mention ticky counters */
899 /* This list should marry up with the one in $(TOP)/includes/stg/Ticky.h */
900 #define RTS_TICKY_SYMBOLS \
901 SymI_NeedsProto(ticky_entry_ctrs) \
902 SymI_NeedsProto(top_ct) \
903 \
904 SymI_HasProto(ENT_VIA_NODE_ctr) \
905 SymI_HasProto(ENT_STATIC_THK_SINGLE_ctr) \
906 SymI_HasProto(ENT_STATIC_THK_MANY_ctr) \
907 SymI_HasProto(ENT_DYN_THK_SINGLE_ctr) \
908 SymI_HasProto(ENT_DYN_THK_MANY_ctr) \
909 SymI_HasProto(ENT_STATIC_FUN_DIRECT_ctr) \
910 SymI_HasProto(ENT_DYN_FUN_DIRECT_ctr) \
911 SymI_HasProto(ENT_STATIC_CON_ctr) \
912 SymI_HasProto(ENT_DYN_CON_ctr) \
913 SymI_HasProto(ENT_STATIC_IND_ctr) \
914 SymI_HasProto(ENT_DYN_IND_ctr) \
915 SymI_HasProto(ENT_PERM_IND_ctr) \
916 SymI_HasProto(ENT_PAP_ctr) \
917 SymI_HasProto(ENT_AP_ctr) \
918 SymI_HasProto(ENT_AP_STACK_ctr) \
919 SymI_HasProto(ENT_BH_ctr) \
920 SymI_HasProto(ENT_LNE_ctr) \
921 SymI_HasProto(UNKNOWN_CALL_ctr) \
922 SymI_HasProto(SLOW_CALL_fast_v16_ctr) \
923 SymI_HasProto(SLOW_CALL_fast_v_ctr) \
924 SymI_HasProto(SLOW_CALL_fast_f_ctr) \
925 SymI_HasProto(SLOW_CALL_fast_d_ctr) \
926 SymI_HasProto(SLOW_CALL_fast_l_ctr) \
927 SymI_HasProto(SLOW_CALL_fast_n_ctr) \
928 SymI_HasProto(SLOW_CALL_fast_p_ctr) \
929 SymI_HasProto(SLOW_CALL_fast_pv_ctr) \
930 SymI_HasProto(SLOW_CALL_fast_pp_ctr) \
931 SymI_HasProto(SLOW_CALL_fast_ppv_ctr) \
932 SymI_HasProto(SLOW_CALL_fast_ppp_ctr) \
933 SymI_HasProto(SLOW_CALL_fast_pppv_ctr) \
934 SymI_HasProto(SLOW_CALL_fast_pppp_ctr) \
935 SymI_HasProto(SLOW_CALL_fast_ppppp_ctr) \
936 SymI_HasProto(SLOW_CALL_fast_pppppp_ctr) \
937 SymI_HasProto(VERY_SLOW_CALL_ctr) \
938 SymI_HasProto(ticky_slow_call_unevald) \
939 SymI_HasProto(SLOW_CALL_ctr) \
940 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_ctr) \
941 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_CHUNKS_ctr) \
942 SymI_HasProto(KNOWN_CALL_ctr) \
943 SymI_HasProto(KNOWN_CALL_TOO_FEW_ARGS_ctr) \
944 SymI_HasProto(KNOWN_CALL_EXTRA_ARGS_ctr) \
945 SymI_HasProto(SLOW_CALL_FUN_TOO_FEW_ctr) \
946 SymI_HasProto(SLOW_CALL_FUN_CORRECT_ctr) \
947 SymI_HasProto(SLOW_CALL_FUN_TOO_MANY_ctr) \
948 SymI_HasProto(SLOW_CALL_PAP_TOO_FEW_ctr) \
949 SymI_HasProto(SLOW_CALL_PAP_CORRECT_ctr) \
950 SymI_HasProto(SLOW_CALL_PAP_TOO_MANY_ctr) \
951 SymI_HasProto(SLOW_CALL_UNEVALD_ctr) \
952 SymI_HasProto(UPDF_OMITTED_ctr) \
953 SymI_HasProto(UPDF_PUSHED_ctr) \
954 SymI_HasProto(CATCHF_PUSHED_ctr) \
955 SymI_HasProto(UPDF_RCC_PUSHED_ctr) \
956 SymI_HasProto(UPDF_RCC_OMITTED_ctr) \
957 SymI_HasProto(UPD_SQUEEZED_ctr) \
958 SymI_HasProto(UPD_CON_IN_NEW_ctr) \
959 SymI_HasProto(UPD_CON_IN_PLACE_ctr) \
960 SymI_HasProto(UPD_PAP_IN_NEW_ctr) \
961 SymI_HasProto(UPD_PAP_IN_PLACE_ctr) \
962 SymI_HasProto(ALLOC_HEAP_ctr) \
963 SymI_HasProto(ALLOC_HEAP_tot) \
964 SymI_HasProto(HEAP_CHK_ctr) \
965 SymI_HasProto(STK_CHK_ctr) \
966 SymI_HasProto(ALLOC_RTS_ctr) \
967 SymI_HasProto(ALLOC_RTS_tot) \
968 SymI_HasProto(ALLOC_FUN_ctr) \
969 SymI_HasProto(ALLOC_FUN_adm) \
970 SymI_HasProto(ALLOC_FUN_gds) \
971 SymI_HasProto(ALLOC_FUN_slp) \
972 SymI_HasProto(UPD_NEW_IND_ctr) \
973 SymI_HasProto(UPD_NEW_PERM_IND_ctr) \
974 SymI_HasProto(UPD_OLD_IND_ctr) \
975 SymI_HasProto(UPD_OLD_PERM_IND_ctr) \
976 SymI_HasProto(UPD_CAF_BH_UPDATABLE_ctr) \
977 SymI_HasProto(UPD_CAF_BH_SINGLE_ENTRY_ctr) \
978 SymI_HasProto(GC_SEL_ABANDONED_ctr) \
979 SymI_HasProto(GC_SEL_MINOR_ctr) \
980 SymI_HasProto(GC_SEL_MAJOR_ctr) \
981 SymI_HasProto(GC_FAILED_PROMOTION_ctr) \
982 SymI_HasProto(ALLOC_UP_THK_ctr) \
983 SymI_HasProto(ALLOC_SE_THK_ctr) \
984 SymI_HasProto(ALLOC_THK_adm) \
985 SymI_HasProto(ALLOC_THK_gds) \
986 SymI_HasProto(ALLOC_THK_slp) \
987 SymI_HasProto(ALLOC_CON_ctr) \
988 SymI_HasProto(ALLOC_CON_adm) \
989 SymI_HasProto(ALLOC_CON_gds) \
990 SymI_HasProto(ALLOC_CON_slp) \
991 SymI_HasProto(ALLOC_TUP_ctr) \
992 SymI_HasProto(ALLOC_TUP_adm) \
993 SymI_HasProto(ALLOC_TUP_gds) \
994 SymI_HasProto(ALLOC_TUP_slp) \
995 SymI_HasProto(ALLOC_BH_ctr) \
996 SymI_HasProto(ALLOC_BH_adm) \
997 SymI_HasProto(ALLOC_BH_gds) \
998 SymI_HasProto(ALLOC_BH_slp) \
999 SymI_HasProto(ALLOC_PRIM_ctr) \
1000 SymI_HasProto(ALLOC_PRIM_adm) \
1001 SymI_HasProto(ALLOC_PRIM_gds) \
1002 SymI_HasProto(ALLOC_PRIM_slp) \
1003 SymI_HasProto(ALLOC_PAP_ctr) \
1004 SymI_HasProto(ALLOC_PAP_adm) \
1005 SymI_HasProto(ALLOC_PAP_gds) \
1006 SymI_HasProto(ALLOC_PAP_slp) \
1007 SymI_HasProto(ALLOC_TSO_ctr) \
1008 SymI_HasProto(ALLOC_TSO_adm) \
1009 SymI_HasProto(ALLOC_TSO_gds) \
1010 SymI_HasProto(ALLOC_TSO_slp) \
1011 SymI_HasProto(RET_NEW_ctr) \
1012 SymI_HasProto(RET_OLD_ctr) \
1013 SymI_HasProto(RET_UNBOXED_TUP_ctr) \
1014 SymI_HasProto(RET_SEMI_loads_avoided)
1015
1016
1017 // On most platforms, the garbage collector rewrites references
1018 // to small integer and char objects to a set of common, shared ones.
1019 //
1020 // We don't do this when compiling to Windows DLLs at the moment because
1021 // it doesn't support cross package data references well.
1022 //
1023 #if defined(COMPILING_WINDOWS_DLL)
1024 #define RTS_INTCHAR_SYMBOLS
1025 #else
1026 #define RTS_INTCHAR_SYMBOLS \
1027 SymI_HasProto(stg_CHARLIKE_closure) \
1028 SymI_HasProto(stg_INTLIKE_closure)
1029 #endif
1030
1031
1032 #define RTS_SYMBOLS \
1033 Maybe_Stable_Names \
1034 RTS_TICKY_SYMBOLS \
1035 SymI_HasProto(StgReturn) \
1036 SymI_HasProto(stg_gc_noregs) \
1037 SymI_HasProto(stg_ret_v_info) \
1038 SymI_HasProto(stg_ret_p_info) \
1039 SymI_HasProto(stg_ret_n_info) \
1040 SymI_HasProto(stg_ret_f_info) \
1041 SymI_HasProto(stg_ret_d_info) \
1042 SymI_HasProto(stg_ret_l_info) \
1043 SymI_HasProto(stg_gc_prim_p) \
1044 SymI_HasProto(stg_gc_prim_pp) \
1045 SymI_HasProto(stg_gc_prim_n) \
1046 SymI_HasProto(stg_enter_info) \
1047 SymI_HasProto(__stg_gc_enter_1) \
1048 SymI_HasProto(stg_gc_unpt_r1) \
1049 SymI_HasProto(stg_gc_unbx_r1) \
1050 SymI_HasProto(stg_gc_f1) \
1051 SymI_HasProto(stg_gc_d1) \
1052 SymI_HasProto(stg_gc_l1) \
1053 SymI_HasProto(stg_gc_pp) \
1054 SymI_HasProto(stg_gc_ppp) \
1055 SymI_HasProto(stg_gc_pppp) \
1056 SymI_HasProto(__stg_gc_fun) \
1057 SymI_HasProto(stg_gc_fun_info) \
1058 SymI_HasProto(stg_yield_noregs) \
1059 SymI_HasProto(stg_yield_to_interpreter) \
1060 SymI_HasProto(stg_block_noregs) \
1061 SymI_HasProto(stg_block_takemvar) \
1062 SymI_HasProto(stg_block_readmvar) \
1063 SymI_HasProto(stg_block_putmvar) \
1064 MAIN_CAP_SYM \
1065 SymI_HasProto(MallocFailHook) \
1066 SymI_HasProto(OnExitHook) \
1067 SymI_HasProto(OutOfHeapHook) \
1068 SymI_HasProto(StackOverflowHook) \
1069 SymI_HasProto(addDLL) \
1070 SymI_HasProto(__int_encodeDouble) \
1071 SymI_HasProto(__word_encodeDouble) \
1072 SymI_HasProto(__int_encodeFloat) \
1073 SymI_HasProto(__word_encodeFloat) \
1074 SymI_HasProto(stg_atomicallyzh) \
1075 SymI_HasProto(barf) \
1076 SymI_HasProto(debugBelch) \
1077 SymI_HasProto(errorBelch) \
1078 SymI_HasProto(sysErrorBelch) \
1079 SymI_HasProto(stg_getMaskingStatezh) \
1080 SymI_HasProto(stg_maskAsyncExceptionszh) \
1081 SymI_HasProto(stg_maskUninterruptiblezh) \
1082 SymI_HasProto(stg_catchzh) \
1083 SymI_HasProto(stg_catchRetryzh) \
1084 SymI_HasProto(stg_catchSTMzh) \
1085 SymI_HasProto(stg_checkzh) \
1086 SymI_HasProto(closure_flags) \
1087 SymI_HasProto(cmp_thread) \
1088 SymI_HasProto(createAdjustor) \
1089 SymI_HasProto(stg_decodeDoublezu2Intzh) \
1090 SymI_HasProto(stg_decodeFloatzuIntzh) \
1091 SymI_HasProto(defaultsHook) \
1092 SymI_HasProto(stg_delayzh) \
1093 SymI_HasProto(stg_deRefWeakzh) \
1094 SymI_HasProto(stg_deRefStablePtrzh) \
1095 SymI_HasProto(dirty_MUT_VAR) \
1096 SymI_HasProto(dirty_TVAR) \
1097 SymI_HasProto(stg_forkzh) \
1098 SymI_HasProto(stg_forkOnzh) \
1099 SymI_HasProto(forkProcess) \
1100 SymI_HasProto(forkOS_createThread) \
1101 SymI_HasProto(freeHaskellFunctionPtr) \
1102 SymI_HasProto(getOrSetGHCConcSignalSignalHandlerStore) \
1103 SymI_HasProto(getOrSetGHCConcWindowsPendingDelaysStore) \
1104 SymI_HasProto(getOrSetGHCConcWindowsIOManagerThreadStore) \
1105 SymI_HasProto(getOrSetGHCConcWindowsProddingStore) \
1106 SymI_HasProto(getOrSetSystemEventThreadEventManagerStore) \
1107 SymI_HasProto(getOrSetSystemEventThreadIOManagerThreadStore) \
1108 SymI_HasProto(getOrSetSystemTimerThreadEventManagerStore) \
1109 SymI_HasProto(getOrSetSystemTimerThreadIOManagerThreadStore) \
1110 SymI_HasProto(getOrSetLibHSghcFastStringTable) \
1111 SymI_HasProto(getGCStats) \
1112 SymI_HasProto(getGCStatsEnabled) \
1113 SymI_HasProto(genericRaise) \
1114 SymI_HasProto(getProgArgv) \
1115 SymI_HasProto(getFullProgArgv) \
1116 SymI_HasProto(getStablePtr) \
1117 SymI_HasProto(hs_init) \
1118 SymI_HasProto(hs_exit) \
1119 SymI_HasProto(hs_set_argv) \
1120 SymI_HasProto(hs_add_root) \
1121 SymI_HasProto(hs_perform_gc) \
1122 SymI_HasProto(hs_lock_stable_tables) \
1123 SymI_HasProto(hs_unlock_stable_tables) \
1124 SymI_HasProto(hs_free_stable_ptr) \
1125 SymI_HasProto(hs_free_stable_ptr_unsafe) \
1126 SymI_HasProto(hs_free_fun_ptr) \
1127 SymI_HasProto(hs_hpc_rootModule) \
1128 SymI_HasProto(hs_hpc_module) \
1129 SymI_HasProto(initLinker) \
1130 SymI_HasProto(stg_unpackClosurezh) \
1131 SymI_HasProto(stg_getApStackValzh) \
1132 SymI_HasProto(stg_getSparkzh) \
1133 SymI_HasProto(stg_numSparkszh) \
1134 SymI_HasProto(stg_isCurrentThreadBoundzh) \
1135 SymI_HasProto(stg_isEmptyMVarzh) \
1136 SymI_HasProto(stg_killThreadzh) \
1137 SymI_HasProto(loadArchive) \
1138 SymI_HasProto(loadObj) \
1139 SymI_HasProto(insertStableSymbol) \
1140 SymI_HasProto(insertSymbol) \
1141 SymI_HasProto(lookupSymbol) \
1142 SymI_HasProto(stg_makeStablePtrzh) \
1143 SymI_HasProto(stg_mkApUpd0zh) \
1144 SymI_HasProto(stg_myThreadIdzh) \
1145 SymI_HasProto(stg_labelThreadzh) \
1146 SymI_HasProto(stg_newArrayzh) \
1147 SymI_HasProto(stg_newArrayArrayzh) \
1148 SymI_HasProto(stg_casArrayzh) \
1149 SymI_HasProto(stg_newBCOzh) \
1150 SymI_HasProto(stg_newByteArrayzh) \
1151 SymI_HasProto(stg_casIntArrayzh) \
1152 SymI_HasProto(stg_fetchAddIntArrayzh) \
1153 SymI_HasProto_redirect(newCAF, newDynCAF) \
1154 SymI_HasProto(stg_newMVarzh) \
1155 SymI_HasProto(stg_newMutVarzh) \
1156 SymI_HasProto(stg_newTVarzh) \
1157 SymI_HasProto(stg_noDuplicatezh) \
1158 SymI_HasProto(stg_atomicModifyMutVarzh) \
1159 SymI_HasProto(stg_casMutVarzh) \
1160 SymI_HasProto(stg_newPinnedByteArrayzh) \
1161 SymI_HasProto(stg_newAlignedPinnedByteArrayzh) \
1162 SymI_HasProto(newSpark) \
1163 SymI_HasProto(performGC) \
1164 SymI_HasProto(performMajorGC) \
1165 SymI_HasProto(prog_argc) \
1166 SymI_HasProto(prog_argv) \
1167 SymI_HasProto(stg_putMVarzh) \
1168 SymI_HasProto(stg_raisezh) \
1169 SymI_HasProto(stg_raiseIOzh) \
1170 SymI_HasProto(stg_readTVarzh) \
1171 SymI_HasProto(stg_readTVarIOzh) \
1172 SymI_HasProto(resumeThread) \
1173 SymI_HasProto(setNumCapabilities) \
1174 SymI_HasProto(getNumberOfProcessors) \
1175 SymI_HasProto(resolveObjs) \
1176 SymI_HasProto(stg_retryzh) \
1177 SymI_HasProto(rts_apply) \
1178 SymI_HasProto(rts_checkSchedStatus) \
1179 SymI_HasProto(rts_eval) \
1180 SymI_HasProto(rts_evalIO) \
1181 SymI_HasProto(rts_evalLazyIO) \
1182 SymI_HasProto(rts_evalStableIO) \
1183 SymI_HasProto(rts_eval_) \
1184 SymI_HasProto(rts_getBool) \
1185 SymI_HasProto(rts_getChar) \
1186 SymI_HasProto(rts_getDouble) \
1187 SymI_HasProto(rts_getFloat) \
1188 SymI_HasProto(rts_getInt) \
1189 SymI_HasProto(rts_getInt8) \
1190 SymI_HasProto(rts_getInt16) \
1191 SymI_HasProto(rts_getInt32) \
1192 SymI_HasProto(rts_getInt64) \
1193 SymI_HasProto(rts_getPtr) \
1194 SymI_HasProto(rts_getFunPtr) \
1195 SymI_HasProto(rts_getStablePtr) \
1196 SymI_HasProto(rts_getThreadId) \
1197 SymI_HasProto(rts_getWord) \
1198 SymI_HasProto(rts_getWord8) \
1199 SymI_HasProto(rts_getWord16) \
1200 SymI_HasProto(rts_getWord32) \
1201 SymI_HasProto(rts_getWord64) \
1202 SymI_HasProto(rts_lock) \
1203 SymI_HasProto(rts_mkBool) \
1204 SymI_HasProto(rts_mkChar) \
1205 SymI_HasProto(rts_mkDouble) \
1206 SymI_HasProto(rts_mkFloat) \
1207 SymI_HasProto(rts_mkInt) \
1208 SymI_HasProto(rts_mkInt8) \
1209 SymI_HasProto(rts_mkInt16) \
1210 SymI_HasProto(rts_mkInt32) \
1211 SymI_HasProto(rts_mkInt64) \
1212 SymI_HasProto(rts_mkPtr) \
1213 SymI_HasProto(rts_mkFunPtr) \
1214 SymI_HasProto(rts_mkStablePtr) \
1215 SymI_HasProto(rts_mkString) \
1216 SymI_HasProto(rts_mkWord) \
1217 SymI_HasProto(rts_mkWord8) \
1218 SymI_HasProto(rts_mkWord16) \
1219 SymI_HasProto(rts_mkWord32) \
1220 SymI_HasProto(rts_mkWord64) \
1221 SymI_HasProto(rts_unlock) \
1222 SymI_HasProto(rts_unsafeGetMyCapability) \
1223 SymI_HasProto(rtsSupportsBoundThreads) \
1224 SymI_HasProto(rts_isProfiled) \
1225 SymI_HasProto(setProgArgv) \
1226 SymI_HasProto(startupHaskell) \
1227 SymI_HasProto(shutdownHaskell) \
1228 SymI_HasProto(shutdownHaskellAndExit) \
1229 SymI_HasProto(stable_name_table) \
1230 SymI_HasProto(stable_ptr_table) \
1231 SymI_HasProto(stackOverflow) \
1232 SymI_HasProto(stg_CAF_BLACKHOLE_info) \
1233 SymI_HasProto(stg_BLACKHOLE_info) \
1234 SymI_HasProto(__stg_EAGER_BLACKHOLE_info) \
1235 SymI_HasProto(stg_BLOCKING_QUEUE_CLEAN_info) \
1236 SymI_HasProto(stg_BLOCKING_QUEUE_DIRTY_info) \
1237 SymI_HasProto(startTimer) \
1238 SymI_HasProto(stg_MVAR_CLEAN_info) \
1239 SymI_HasProto(stg_MVAR_DIRTY_info) \
1240 SymI_HasProto(stg_TVAR_CLEAN_info) \
1241 SymI_HasProto(stg_TVAR_DIRTY_info) \
1242 SymI_HasProto(stg_IND_STATIC_info) \
1243 SymI_HasProto(stg_ARR_WORDS_info) \
1244 SymI_HasProto(stg_MUT_ARR_PTRS_DIRTY_info) \
1245 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN_info) \
1246 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN0_info) \
1247 SymI_HasProto(stg_MUT_VAR_CLEAN_info) \
1248 SymI_HasProto(stg_MUT_VAR_DIRTY_info) \
1249 SymI_HasProto(stg_WEAK_info) \
1250 SymI_HasProto(stg_ap_v_info) \
1251 SymI_HasProto(stg_ap_f_info) \
1252 SymI_HasProto(stg_ap_d_info) \
1253 SymI_HasProto(stg_ap_l_info) \
1254 SymI_HasProto(stg_ap_v16_info) \
1255 SymI_HasProto(stg_ap_n_info) \
1256 SymI_HasProto(stg_ap_p_info) \
1257 SymI_HasProto(stg_ap_pv_info) \
1258 SymI_HasProto(stg_ap_pp_info) \
1259 SymI_HasProto(stg_ap_ppv_info) \
1260 SymI_HasProto(stg_ap_ppp_info) \
1261 SymI_HasProto(stg_ap_pppv_info) \
1262 SymI_HasProto(stg_ap_pppp_info) \
1263 SymI_HasProto(stg_ap_ppppp_info) \
1264 SymI_HasProto(stg_ap_pppppp_info) \
1265 SymI_HasProto(stg_ap_0_fast) \
1266 SymI_HasProto(stg_ap_v_fast) \
1267 SymI_HasProto(stg_ap_f_fast) \
1268 SymI_HasProto(stg_ap_d_fast) \
1269 SymI_HasProto(stg_ap_l_fast) \
1270 SymI_HasProto(stg_ap_v16_fast) \
1271 SymI_HasProto(stg_ap_n_fast) \
1272 SymI_HasProto(stg_ap_p_fast) \
1273 SymI_HasProto(stg_ap_pv_fast) \
1274 SymI_HasProto(stg_ap_pp_fast) \
1275 SymI_HasProto(stg_ap_ppv_fast) \
1276 SymI_HasProto(stg_ap_ppp_fast) \
1277 SymI_HasProto(stg_ap_pppv_fast) \
1278 SymI_HasProto(stg_ap_pppp_fast) \
1279 SymI_HasProto(stg_ap_ppppp_fast) \
1280 SymI_HasProto(stg_ap_pppppp_fast) \
1281 SymI_HasProto(stg_ap_1_upd_info) \
1282 SymI_HasProto(stg_ap_2_upd_info) \
1283 SymI_HasProto(stg_ap_3_upd_info) \
1284 SymI_HasProto(stg_ap_4_upd_info) \
1285 SymI_HasProto(stg_ap_5_upd_info) \
1286 SymI_HasProto(stg_ap_6_upd_info) \
1287 SymI_HasProto(stg_ap_7_upd_info) \
1288 SymI_HasProto(stg_exit) \
1289 SymI_HasProto(stg_sel_0_upd_info) \
1290 SymI_HasProto(stg_sel_1_upd_info) \
1291 SymI_HasProto(stg_sel_2_upd_info) \
1292 SymI_HasProto(stg_sel_3_upd_info) \
1293 SymI_HasProto(stg_sel_4_upd_info) \
1294 SymI_HasProto(stg_sel_5_upd_info) \
1295 SymI_HasProto(stg_sel_6_upd_info) \
1296 SymI_HasProto(stg_sel_7_upd_info) \
1297 SymI_HasProto(stg_sel_8_upd_info) \
1298 SymI_HasProto(stg_sel_9_upd_info) \
1299 SymI_HasProto(stg_sel_10_upd_info) \
1300 SymI_HasProto(stg_sel_11_upd_info) \
1301 SymI_HasProto(stg_sel_12_upd_info) \
1302 SymI_HasProto(stg_sel_13_upd_info) \
1303 SymI_HasProto(stg_sel_14_upd_info) \
1304 SymI_HasProto(stg_sel_15_upd_info) \
1305 SymI_HasProto(stg_sel_0_noupd_info) \
1306 SymI_HasProto(stg_sel_1_noupd_info) \
1307 SymI_HasProto(stg_sel_2_noupd_info) \
1308 SymI_HasProto(stg_sel_3_noupd_info) \
1309 SymI_HasProto(stg_sel_4_noupd_info) \
1310 SymI_HasProto(stg_sel_5_noupd_info) \
1311 SymI_HasProto(stg_sel_6_noupd_info) \
1312 SymI_HasProto(stg_sel_7_noupd_info) \
1313 SymI_HasProto(stg_sel_8_noupd_info) \
1314 SymI_HasProto(stg_sel_9_noupd_info) \
1315 SymI_HasProto(stg_sel_10_noupd_info) \
1316 SymI_HasProto(stg_sel_11_noupd_info) \
1317 SymI_HasProto(stg_sel_12_noupd_info) \
1318 SymI_HasProto(stg_sel_13_noupd_info) \
1319 SymI_HasProto(stg_sel_14_noupd_info) \
1320 SymI_HasProto(stg_sel_15_noupd_info) \
1321 SymI_HasProto(stg_upd_frame_info) \
1322 SymI_HasProto(stg_bh_upd_frame_info) \
1323 SymI_HasProto(suspendThread) \
1324 SymI_HasProto(stg_takeMVarzh) \
1325 SymI_HasProto(stg_readMVarzh) \
1326 SymI_HasProto(stg_threadStatuszh) \
1327 SymI_HasProto(stg_tryPutMVarzh) \
1328 SymI_HasProto(stg_tryTakeMVarzh) \
1329 SymI_HasProto(stg_tryReadMVarzh) \
1330 SymI_HasProto(stg_unmaskAsyncExceptionszh) \
1331 SymI_HasProto(unloadObj) \
1332 SymI_HasProto(stg_unsafeThawArrayzh) \
1333 SymI_HasProto(stg_waitReadzh) \
1334 SymI_HasProto(stg_waitWritezh) \
1335 SymI_HasProto(stg_writeTVarzh) \
1336 SymI_HasProto(stg_yieldzh) \
1337 SymI_NeedsProto(stg_interp_constr_entry) \
1338 SymI_HasProto(stg_arg_bitmaps) \
1339 SymI_HasProto(large_alloc_lim) \
1340 SymI_HasProto(g0) \
1341 SymI_HasProto(allocate) \
1342 SymI_HasProto(allocateExec) \
1343 SymI_HasProto(freeExec) \
1344 SymI_HasProto(getAllocations) \
1345 SymI_HasProto(revertCAFs) \
1346 SymI_HasProto(RtsFlags) \
1347 SymI_NeedsProto(rts_breakpoint_io_action) \
1348 SymI_NeedsProto(rts_stop_next_breakpoint) \
1349 SymI_NeedsProto(rts_stop_on_exception) \
1350 SymI_HasProto(stopTimer) \
1351 SymI_HasProto(n_capabilities) \
1352 SymI_HasProto(enabled_capabilities) \
1353 SymI_HasProto(stg_traceCcszh) \
1354 SymI_HasProto(stg_traceEventzh) \
1355 SymI_HasProto(stg_traceMarkerzh) \
1356 SymI_HasProto(getMonotonicNSec) \
1357 SymI_HasProto(lockFile) \
1358 SymI_HasProto(unlockFile) \
1359 SymI_HasProto(startProfTimer) \
1360 SymI_HasProto(stopProfTimer) \
1361 SymI_HasProto(atomic_inc) \
1362 SymI_HasProto(atomic_dec) \
1363 RTS_USER_SIGNALS_SYMBOLS \
1364 RTS_INTCHAR_SYMBOLS
1365
1366
1367 // 64-bit support functions in libgcc.a
1368 #if defined(__GNUC__) && SIZEOF_VOID_P <= 4 && !defined(_ABIN32)
1369 #define RTS_LIBGCC_SYMBOLS \
1370 SymI_NeedsProto(__divdi3) \
1371 SymI_NeedsProto(__udivdi3) \
1372 SymI_NeedsProto(__moddi3) \
1373 SymI_NeedsProto(__umoddi3) \
1374 SymI_NeedsProto(__muldi3) \
1375 SymI_NeedsProto(__ashldi3) \
1376 SymI_NeedsProto(__ashrdi3) \
1377 SymI_NeedsProto(__lshrdi3) \
1378 SymI_NeedsProto(__fixunsdfdi)
1379 #else
1380 #define RTS_LIBGCC_SYMBOLS
1381 #endif
1382
1383 #if defined(darwin_HOST_OS) && defined(powerpc_HOST_ARCH)
1384 // Symbols that don't have a leading underscore
1385 // on Mac OS X. They have to receive special treatment,
1386 // see machoInitSymbolsWithoutUnderscore()
1387 #define RTS_MACHO_NOUNDERLINE_SYMBOLS \
1388 SymI_NeedsProto(saveFP) \
1389 SymI_NeedsProto(restFP)
1390 #endif
1391
1392 /* entirely bogus claims about types of these symbols */
1393 #define SymI_NeedsProto(vvv) extern void vvv(void);
1394 #if defined(COMPILING_WINDOWS_DLL)
1395 #define SymE_HasProto(vvv) SymE_HasProto(vvv);
1396 # if defined(x86_64_HOST_ARCH)
1397 # define SymE_NeedsProto(vvv) extern void __imp_ ## vvv (void);
1398 # else
1399 # define SymE_NeedsProto(vvv) extern void _imp__ ## vvv (void);
1400 # endif
1401 #else
1402 #define SymE_NeedsProto(vvv) SymI_NeedsProto(vvv);
1403 #define SymE_HasProto(vvv) SymI_HasProto(vvv)
1404 #endif
1405 #define SymI_HasProto(vvv) /**/
1406 #define SymI_HasProto_redirect(vvv,xxx) /**/
1407 RTS_SYMBOLS
1408 RTS_RET_SYMBOLS
1409 RTS_POSIX_ONLY_SYMBOLS
1410 RTS_MINGW_ONLY_SYMBOLS
1411 RTS_CYGWIN_ONLY_SYMBOLS
1412 RTS_DARWIN_ONLY_SYMBOLS
1413 RTS_LIBGCC_SYMBOLS
1414 RTS_LIBFFI_SYMBOLS
1415 #undef SymI_NeedsProto
1416 #undef SymI_HasProto
1417 #undef SymI_HasProto_redirect
1418 #undef SymE_HasProto
1419 #undef SymE_NeedsProto
1420
1421 #ifdef LEADING_UNDERSCORE
1422 #define MAYBE_LEADING_UNDERSCORE_STR(s) ("_" s)
1423 #else
1424 #define MAYBE_LEADING_UNDERSCORE_STR(s) (s)
1425 #endif
1426
1427 #define SymI_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1428 (void*)(&(vvv)) },
1429 #define SymE_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1430 (void*)DLL_IMPORT_DATA_REF(vvv) },
1431
1432 #define SymI_NeedsProto(vvv) SymI_HasProto(vvv)
1433 #define SymE_NeedsProto(vvv) SymE_HasProto(vvv)
1434
1435 // SymI_HasProto_redirect allows us to redirect references to one symbol to
1436 // another symbol. See newCAF/newDynCAF for an example.
1437 #define SymI_HasProto_redirect(vvv,xxx) \
1438 { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1439 (void*)(&(xxx)) },
1440
1441 static RtsSymbolVal rtsSyms[] = {
1442 RTS_SYMBOLS
1443 RTS_RET_SYMBOLS
1444 RTS_POSIX_ONLY_SYMBOLS
1445 RTS_MINGW_ONLY_SYMBOLS
1446 RTS_CYGWIN_ONLY_SYMBOLS
1447 RTS_DARWIN_ONLY_SYMBOLS
1448 RTS_LIBGCC_SYMBOLS
1449 RTS_LIBFFI_SYMBOLS
1450 #if defined(darwin_HOST_OS) && defined(i386_HOST_ARCH)
1451 // dyld stub code contains references to this,
1452 // but it should never be called because we treat
1453 // lazy pointers as nonlazy.
1454 { "dyld_stub_binding_helper", (void*)0xDEADBEEF },
1455 #endif
1456 { 0, 0 } /* sentinel */
1457 };
1458
1459
1460 /* -----------------------------------------------------------------------------
1461 * Insert symbols into hash tables, checking for duplicates.
1462 */
1463
1464 static void ghciInsertStrHashTable ( pathchar* obj_name,
1465 HashTable *table,
1466 char* key,
1467 void *data
1468 )
1469 {
1470 if (lookupHashTable(table, (StgWord)key) == NULL)
1471 {
1472 insertStrHashTable(table, (StgWord)key, data);
1473 return;
1474 }
1475 debugBelch(
1476 "\n\n"
1477 "GHCi runtime linker: fatal error: I found a duplicate definition for symbol\n"
1478 " %s\n"
1479 "whilst processing object file\n"
1480 " %" PATH_FMT "\n"
1481 "This could be caused by:\n"
1482 " * Loading two different object files which export the same symbol\n"
1483 " * Specifying the same object file twice on the GHCi command line\n"
1484 " * An incorrect `package.conf' entry, causing some object to be\n"
1485 " loaded twice.\n"
1486 "GHCi cannot safely continue in this situation. Exiting now. Sorry.\n"
1487 "\n",
1488 (char*)key,
1489 obj_name
1490 );
1491 stg_exit(1);
1492 }
1493 /* -----------------------------------------------------------------------------
1494 * initialize the object linker
1495 */
1496
1497
1498 static int linker_init_done = 0 ;
1499
1500 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1501 static void *dl_prog_handle;
1502 static regex_t re_invalid;
1503 static regex_t re_realso;
1504 #ifdef THREADED_RTS
1505 static Mutex dl_mutex; // mutex to protect dlopen/dlerror critical section
1506 #endif
1507 #endif
1508
1509 void
1510 initLinker( void )
1511 {
1512 RtsSymbolVal *sym;
1513 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1514 int compileResult;
1515 #endif
1516
1517 IF_DEBUG(linker, debugBelch("initLinker: start\n"));
1518
1519 /* Make initLinker idempotent, so we can call it
1520 before every relevant operation; that means we
1521 don't need to initialise the linker separately */
1522 if (linker_init_done == 1) {
1523 IF_DEBUG(linker, debugBelch("initLinker: idempotent return\n"));
1524 return;
1525 } else {
1526 linker_init_done = 1;
1527 }
1528
1529 objects = NULL;
1530 unloaded_objects = NULL;
1531
1532 #if defined(THREADED_RTS) && (defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO))
1533 initMutex(&dl_mutex);
1534 #endif
1535 stablehash = allocStrHashTable();
1536 symhash = allocStrHashTable();
1537
1538 /* populate the symbol table with stuff from the RTS */
1539 for (sym = rtsSyms; sym->lbl != NULL; sym++) {
1540 ghciInsertStrHashTable(WSTR("(GHCi built-in symbols)"),
1541 symhash, sym->lbl, sym->addr);
1542 IF_DEBUG(linker, debugBelch("initLinker: inserting rts symbol %s, %p\n", sym->lbl, sym->addr));
1543 }
1544 # if defined(OBJFORMAT_MACHO) && defined(powerpc_HOST_ARCH)
1545 machoInitSymbolsWithoutUnderscore();
1546 # endif
1547
1548 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1549 # if defined(RTLD_DEFAULT)
1550 dl_prog_handle = RTLD_DEFAULT;
1551 # else
1552 dl_prog_handle = dlopen(NULL, RTLD_LAZY);
1553 # endif /* RTLD_DEFAULT */
1554
1555 compileResult = regcomp(&re_invalid,
1556 "(([^ \t()])+\\.so([^ \t:()])*):([ \t])*(invalid ELF header|file too short)",
1557 REG_EXTENDED);
1558 if (compileResult != 0) {
1559 barf("Compiling re_invalid failed");
1560 }
1561 compileResult = regcomp(&re_realso,
1562 "(GROUP|INPUT) *\\( *([^ )]+)",
1563 REG_EXTENDED);
1564 if (compileResult != 0) {
1565 barf("Compiling re_realso failed");
1566 }
1567 # endif
1568
1569 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1570 if (RtsFlags.MiscFlags.linkerMemBase != 0) {
1571 // User-override for mmap_32bit_base
1572 mmap_32bit_base = (void*)RtsFlags.MiscFlags.linkerMemBase;
1573 }
1574 #endif
1575
1576 #if defined(mingw32_HOST_OS)
1577 /*
1578 * These two libraries cause problems when added to the static link,
1579 * but are necessary for resolving symbols in GHCi, hence we load
1580 * them manually here.
1581 */
1582 addDLL(WSTR("msvcrt"));
1583 addDLL(WSTR("kernel32"));
1584 #endif
1585
1586 IF_DEBUG(linker, debugBelch("initLinker: done\n"));
1587 return;
1588 }
1589
1590 void
1591 exitLinker( void ) {
1592 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1593 if (linker_init_done == 1) {
1594 regfree(&re_invalid);
1595 regfree(&re_realso);
1596 #ifdef THREADED_RTS
1597 closeMutex(&dl_mutex);
1598 #endif
1599 }
1600 #endif
1601 }
1602
1603 /* -----------------------------------------------------------------------------
1604 * Loading DLL or .so dynamic libraries
1605 * -----------------------------------------------------------------------------
1606 *
1607 * Add a DLL from which symbols may be found. In the ELF case, just
1608 * do RTLD_GLOBAL-style add, so no further messing around needs to
1609 * happen in order that symbols in the loaded .so are findable --
1610 * lookupSymbol() will subsequently see them by dlsym on the program's
1611 * dl-handle. Returns NULL if success, otherwise ptr to an err msg.
1612 *
1613 * In the PEi386 case, open the DLLs and put handles to them in a
1614 * linked list. When looking for a symbol, try all handles in the
1615 * list. This means that we need to load even DLLs that are guaranteed
1616 * to be in the ghc.exe image already, just so we can get a handle
1617 * to give to loadSymbol, so that we can find the symbols. For such
1618 * libraries, the LoadLibrary call should be a no-op except for returning
1619 * the handle.
1620 *
1621 */
1622
1623 #if defined(OBJFORMAT_PEi386)
1624 /* A record for storing handles into DLLs. */
1625
1626 typedef
1627 struct _OpenedDLL {
1628 pathchar* name;
1629 struct _OpenedDLL* next;
1630 HINSTANCE instance;
1631 }
1632 OpenedDLL;
1633
1634 /* A list thereof. */
1635 static OpenedDLL* opened_dlls = NULL;
1636 #endif
1637
1638 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1639
1640 /* Suppose in ghci we load a temporary SO for a module containing
1641 f = 1
1642 and then modify the module, recompile, and load another temporary
1643 SO with
1644 f = 2
1645 Then as we don't unload the first SO, dlsym will find the
1646 f = 1
1647 symbol whereas we want the
1648 f = 2
1649 symbol. We therefore need to keep our own SO handle list, and
1650 try SOs in the right order. */
1651
1652 typedef
1653 struct _OpenedSO {
1654 struct _OpenedSO* next;
1655 void *handle;
1656 }
1657 OpenedSO;
1658
1659 /* A list thereof. */
1660 static OpenedSO* openedSOs = NULL;
1661
1662 static const char *
1663 internal_dlopen(const char *dll_name)
1664 {
1665 OpenedSO* o_so;
1666 void *hdl;
1667 const char *errmsg;
1668 char *errmsg_copy;
1669
1670 // omitted: RTLD_NOW
1671 // see http://www.haskell.org/pipermail/cvs-ghc/2007-September/038570.html
1672 IF_DEBUG(linker,
1673 debugBelch("internal_dlopen: dll_name = '%s'\n", dll_name));
1674
1675 //-------------- Begin critical section ------------------
1676 // This critical section is necessary because dlerror() is not
1677 // required to be reentrant (see POSIX -- IEEE Std 1003.1-2008)
1678 // Also, the error message returned must be copied to preserve it
1679 // (see POSIX also)
1680
1681 ACQUIRE_LOCK(&dl_mutex);
1682 hdl = dlopen(dll_name, RTLD_LAZY | RTLD_GLOBAL);
1683
1684 errmsg = NULL;
1685 if (hdl == NULL) {
1686 /* dlopen failed; return a ptr to the error msg. */
1687 errmsg = dlerror();
1688 if (errmsg == NULL) errmsg = "addDLL: unknown error";
1689 errmsg_copy = stgMallocBytes(strlen(errmsg)+1, "addDLL");
1690 strcpy(errmsg_copy, errmsg);
1691 errmsg = errmsg_copy;
1692 }
1693 o_so = stgMallocBytes(sizeof(OpenedSO), "addDLL");
1694 o_so->handle = hdl;
1695 o_so->next = openedSOs;
1696 openedSOs = o_so;
1697
1698 RELEASE_LOCK(&dl_mutex);
1699 //--------------- End critical section -------------------
1700
1701 return errmsg;
1702 }
1703
1704 static void *
1705 internal_dlsym(void *hdl, const char *symbol) {
1706 OpenedSO* o_so;
1707 void *v;
1708
1709 // We acquire dl_mutex as concurrent dl* calls may alter dlerror
1710 ACQUIRE_LOCK(&dl_mutex);
1711 dlerror();
1712 for (o_so = openedSOs; o_so != NULL; o_so = o_so->next) {
1713 v = dlsym(o_so->handle, symbol);
1714 if (dlerror() == NULL) {
1715 RELEASE_LOCK(&dl_mutex);
1716 return v;
1717 }
1718 }
1719 v = dlsym(hdl, symbol);
1720 RELEASE_LOCK(&dl_mutex);
1721 return v;
1722 }
1723 # endif
1724
1725 const char *
1726 addDLL( pathchar *dll_name )
1727 {
1728 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1729 /* ------------------- ELF DLL loader ------------------- */
1730
1731 #define NMATCH 5
1732 regmatch_t match[NMATCH];
1733 const char *errmsg;
1734 FILE* fp;
1735 size_t match_length;
1736 #define MAXLINE 1000
1737 char line[MAXLINE];
1738 int result;
1739
1740 initLinker();
1741
1742 IF_DEBUG(linker, debugBelch("addDLL: dll_name = '%s'\n", dll_name));
1743 errmsg = internal_dlopen(dll_name);
1744
1745 if (errmsg == NULL) {
1746 return NULL;
1747 }
1748
1749 // GHC Trac ticket #2615
1750 // On some systems (e.g., Gentoo Linux) dynamic files (e.g. libc.so)
1751 // contain linker scripts rather than ELF-format object code. This
1752 // code handles the situation by recognizing the real object code
1753 // file name given in the linker script.
1754 //
1755 // If an "invalid ELF header" error occurs, it is assumed that the
1756 // .so file contains a linker script instead of ELF object code.
1757 // In this case, the code looks for the GROUP ( ... ) linker
1758 // directive. If one is found, the first file name inside the
1759 // parentheses is treated as the name of a dynamic library and the
1760 // code attempts to dlopen that file. If this is also unsuccessful,
1761 // an error message is returned.
1762
1763 // see if the error message is due to an invalid ELF header
1764 IF_DEBUG(linker, debugBelch("errmsg = '%s'\n", errmsg));
1765 result = regexec(&re_invalid, errmsg, (size_t) NMATCH, match, 0);
1766 IF_DEBUG(linker, debugBelch("result = %i\n", result));
1767 if (result == 0) {
1768 // success -- try to read the named file as a linker script
1769 match_length = (size_t) stg_min((match[1].rm_eo - match[1].rm_so),
1770 MAXLINE-1);
1771 strncpy(line, (errmsg+(match[1].rm_so)),match_length);
1772 line[match_length] = '\0'; // make sure string is null-terminated
1773 IF_DEBUG(linker, debugBelch ("file name = '%s'\n", line));
1774 if ((fp = fopen(line, "r")) == NULL) {
1775 return errmsg; // return original error if open fails
1776 }
1777 // try to find a GROUP or INPUT ( ... ) command
1778 while (fgets(line, MAXLINE, fp) != NULL) {
1779 IF_DEBUG(linker, debugBelch("input line = %s", line));
1780 if (regexec(&re_realso, line, (size_t) NMATCH, match, 0) == 0) {
1781 // success -- try to dlopen the first named file
1782 IF_DEBUG(linker, debugBelch("match%s\n",""));
1783 line[match[2].rm_eo] = '\0';
1784 errmsg = internal_dlopen(line+match[2].rm_so);
1785 break;
1786 }
1787 // if control reaches here, no GROUP or INPUT ( ... ) directive
1788 // was found and the original error message is returned to the
1789 // caller
1790 }
1791 fclose(fp);
1792 }
1793 return errmsg;
1794
1795 # elif defined(OBJFORMAT_PEi386)
1796 /* ------------------- Win32 DLL loader ------------------- */
1797
1798 pathchar* buf;
1799 OpenedDLL* o_dll;
1800 HINSTANCE instance;
1801
1802 initLinker();
1803
1804 /* debugBelch("\naddDLL; dll_name = `%s'\n", dll_name); */
1805
1806 /* See if we've already got it, and ignore if so. */
1807 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
1808 if (0 == pathcmp(o_dll->name, dll_name))
1809 return NULL;
1810 }
1811
1812 /* The file name has no suffix (yet) so that we can try
1813 both foo.dll and foo.drv
1814
1815 The documentation for LoadLibrary says:
1816 If no file name extension is specified in the lpFileName
1817 parameter, the default library extension .dll is
1818 appended. However, the file name string can include a trailing
1819 point character (.) to indicate that the module name has no
1820 extension. */
1821
1822 buf = stgMallocBytes((pathlen(dll_name) + 10) * sizeof(wchar_t), "addDLL");
1823 swprintf(buf, L"%s.DLL", dll_name);
1824 instance = LoadLibraryW(buf);
1825 if (instance == NULL) {
1826 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1827 // KAA: allow loading of drivers (like winspool.drv)
1828 swprintf(buf, L"%s.DRV", dll_name);
1829 instance = LoadLibraryW(buf);
1830 if (instance == NULL) {
1831 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1832 // #1883: allow loading of unix-style libfoo.dll DLLs
1833 swprintf(buf, L"lib%s.DLL", dll_name);
1834 instance = LoadLibraryW(buf);
1835 if (instance == NULL) {
1836 goto error;
1837 }
1838 }
1839 }
1840 stgFree(buf);
1841
1842 /* Add this DLL to the list of DLLs in which to search for symbols. */
1843 o_dll = stgMallocBytes( sizeof(OpenedDLL), "addDLL" );
1844 o_dll->name = pathdup(dll_name);
1845 o_dll->instance = instance;
1846 o_dll->next = opened_dlls;
1847 opened_dlls = o_dll;
1848
1849 return NULL;
1850
1851 error:
1852 stgFree(buf);
1853 sysErrorBelch("%" PATH_FMT, dll_name);
1854
1855 /* LoadLibrary failed; return a ptr to the error msg. */
1856 return "addDLL: could not load DLL";
1857
1858 # else
1859 barf("addDLL: not implemented on this platform");
1860 # endif
1861 }
1862
1863 /* -----------------------------------------------------------------------------
1864 * insert a stable symbol in the hash table
1865 */
1866
1867 void
1868 insertStableSymbol(pathchar* obj_name, char* key, StgPtr p)
1869 {
1870 ghciInsertStrHashTable(obj_name, stablehash, key, getStablePtr(p));
1871 }
1872
1873
1874 /* -----------------------------------------------------------------------------
1875 * insert a symbol in the hash table
1876 */
1877 void
1878 insertSymbol(pathchar* obj_name, char* key, void* data)
1879 {
1880 ghciInsertStrHashTable(obj_name, symhash, key, data);
1881 }
1882
1883 /* -----------------------------------------------------------------------------
1884 * lookup a symbol in the hash table
1885 */
1886 void *
1887 lookupSymbol( char *lbl )
1888 {
1889 void *val;
1890 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s\n", lbl));
1891 initLinker() ;
1892 ASSERT(symhash != NULL);
1893 val = lookupStrHashTable(symhash, lbl);
1894
1895 if (val == NULL) {
1896 IF_DEBUG(linker, debugBelch("lookupSymbol: symbol not found\n"));
1897 # if defined(OBJFORMAT_ELF)
1898 return internal_dlsym(dl_prog_handle, lbl);
1899 # elif defined(OBJFORMAT_MACHO)
1900 # if HAVE_DLFCN_H
1901 /* On OS X 10.3 and later, we use dlsym instead of the old legacy
1902 interface.
1903
1904 HACK: On OS X, all symbols are prefixed with an underscore.
1905 However, dlsym wants us to omit the leading underscore from the
1906 symbol name -- the dlsym routine puts it back on before searching
1907 for the symbol. For now, we simply strip it off here (and ONLY
1908 here).
1909 */
1910 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s with dlsym\n", lbl));
1911 ASSERT(lbl[0] == '_');
1912 return internal_dlsym(dl_prog_handle, lbl + 1);
1913 # else
1914 if (NSIsSymbolNameDefined(lbl)) {
1915 NSSymbol symbol = NSLookupAndBindSymbol(lbl);
1916 return NSAddressOfSymbol(symbol);
1917 } else {
1918 return NULL;
1919 }
1920 # endif /* HAVE_DLFCN_H */
1921 # elif defined(OBJFORMAT_PEi386)
1922 void* sym;
1923
1924 sym = lookupSymbolInDLLs((unsigned char*)lbl);
1925 if (sym != NULL) { return sym; };
1926
1927 // Also try looking up the symbol without the @N suffix. Some
1928 // DLLs have the suffixes on their symbols, some don't.
1929 zapTrailingAtSign ( (unsigned char*)lbl );
1930 sym = lookupSymbolInDLLs((unsigned char*)lbl);
1931 if (sym != NULL) { return sym; };
1932 return NULL;
1933
1934 # else
1935 ASSERT(2+2 == 5);
1936 return NULL;
1937 # endif
1938 } else {
1939 IF_DEBUG(linker, debugBelch("lookupSymbol: value of %s is %p\n", lbl, val));
1940 return val;
1941 }
1942 }
1943
1944 /* -----------------------------------------------------------------------------
1945 * Debugging aid: look in GHCi's object symbol tables for symbols
1946 * within DELTA bytes of the specified address, and show their names.
1947 */
1948 #ifdef DEBUG
1949 void ghci_enquire ( char* addr );
1950
1951 void ghci_enquire ( char* addr )
1952 {
1953 int i;
1954 char* sym;
1955 char* a;
1956 const int DELTA = 64;
1957 ObjectCode* oc;
1958
1959 initLinker();
1960
1961 for (oc = objects; oc; oc = oc->next) {
1962 for (i = 0; i < oc->n_symbols; i++) {
1963 sym = oc->symbols[i];
1964 if (sym == NULL) continue;
1965 a = NULL;
1966 if (a == NULL) {
1967 a = lookupStrHashTable(symhash, sym);
1968 }
1969 if (a == NULL) {
1970 // debugBelch("ghci_enquire: can't find %s\n", sym);
1971 }
1972 else if (addr-DELTA <= a && a <= addr+DELTA) {
1973 debugBelch("%p + %3d == `%s'\n", addr, (int)(a - addr), sym);
1974 }
1975 }
1976 }
1977 }
1978 #endif
1979
1980 #ifdef USE_MMAP
1981 #define ROUND_UP(x,size) ((x + size - 1) & ~(size - 1))
1982
1983 static void *
1984 mmapForLinker (size_t bytes, nat flags, int fd)
1985 {
1986 void *map_addr = NULL;
1987 void *result;
1988 int pagesize, size;
1989 static nat fixed = 0;
1990
1991 IF_DEBUG(linker, debugBelch("mmapForLinker: start\n"));
1992 pagesize = getpagesize();
1993 size = ROUND_UP(bytes, pagesize);
1994
1995 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1996 mmap_again:
1997
1998 if (mmap_32bit_base != 0) {
1999 map_addr = mmap_32bit_base;
2000 }
2001 #endif
2002
2003 IF_DEBUG(linker, debugBelch("mmapForLinker: \tprotection %#0x\n", PROT_EXEC | PROT_READ | PROT_WRITE));
2004 IF_DEBUG(linker, debugBelch("mmapForLinker: \tflags %#0x\n", MAP_PRIVATE | TRY_MAP_32BIT | fixed | flags));
2005 result = mmap(map_addr, size, PROT_EXEC|PROT_READ|PROT_WRITE,
2006 MAP_PRIVATE|TRY_MAP_32BIT|fixed|flags, fd, 0);
2007
2008 if (result == MAP_FAILED) {
2009 sysErrorBelch("mmap %" FMT_Word " bytes at %p",(W_)size,map_addr);
2010 errorBelch("Try specifying an address with +RTS -xm<addr> -RTS");
2011 stg_exit(EXIT_FAILURE);
2012 }
2013
2014 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2015 if (mmap_32bit_base != 0) {
2016 if (result == map_addr) {
2017 mmap_32bit_base = (StgWord8*)map_addr + size;
2018 } else {
2019 if ((W_)result > 0x80000000) {
2020 // oops, we were given memory over 2Gb
2021 #if defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS)
2022 // Some platforms require MAP_FIXED. This is normally
2023 // a bad idea, because MAP_FIXED will overwrite
2024 // existing mappings.
2025 munmap(result,size);
2026 fixed = MAP_FIXED;
2027 goto mmap_again;
2028 #else
2029 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);
2030 #endif
2031 } else {
2032 // hmm, we were given memory somewhere else, but it's
2033 // still under 2Gb so we can use it. Next time, ask
2034 // for memory right after the place we just got some
2035 mmap_32bit_base = (StgWord8*)result + size;
2036 }
2037 }
2038 } else {
2039 if ((W_)result > 0x80000000) {
2040 // oops, we were given memory over 2Gb
2041 // ... try allocating memory somewhere else?;
2042 debugTrace(DEBUG_linker,"MAP_32BIT didn't work; gave us %lu bytes at 0x%p", bytes, result);
2043 munmap(result, size);
2044
2045 // Set a base address and try again... (guess: 1Gb)
2046 mmap_32bit_base = (void*)0x40000000;
2047 goto mmap_again;
2048 }
2049 }
2050 #endif
2051
2052 IF_DEBUG(linker, debugBelch("mmapForLinker: mapped %" FMT_Word " bytes starting at %p\n", (W_)size, result));
2053 IF_DEBUG(linker, debugBelch("mmapForLinker: done\n"));
2054 return result;
2055 }
2056 #endif // USE_MMAP
2057
2058
2059 void freeObjectCode (ObjectCode *oc)
2060 {
2061 #ifdef USE_MMAP
2062 int pagesize, size, r;
2063
2064 pagesize = getpagesize();
2065 size = ROUND_UP(oc->fileSize, pagesize);
2066
2067 r = munmap(oc->image, size);
2068 if (r == -1) {
2069 sysErrorBelch("munmap");
2070 }
2071
2072 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2073 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2074 if (!USE_CONTIGUOUS_MMAP)
2075 {
2076 munmap(oc->symbol_extras,
2077 ROUND_UP(sizeof(SymbolExtra) * oc->n_symbol_extras, pagesize));
2078 }
2079 #endif
2080 #endif
2081
2082 #else
2083
2084 stgFree(oc->image);
2085
2086 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2087 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2088 stgFree(oc->symbol_extras);
2089 #endif
2090 #endif
2091
2092 #endif
2093
2094 stgFree(oc->fileName);
2095 stgFree(oc->archiveMemberName);
2096 stgFree(oc);
2097 }
2098
2099
2100 static ObjectCode*
2101 mkOc( pathchar *path, char *image, int imageSize,
2102 char *archiveMemberName
2103 #ifndef USE_MMAP
2104 #ifdef darwin_HOST_OS
2105 , int misalignment
2106 #endif
2107 #endif
2108 ) {
2109 ObjectCode* oc;
2110
2111 IF_DEBUG(linker, debugBelch("mkOc: start\n"));
2112 oc = stgMallocBytes(sizeof(ObjectCode), "loadArchive(oc)");
2113
2114 # if defined(OBJFORMAT_ELF)
2115 oc->formatName = "ELF";
2116 # elif defined(OBJFORMAT_PEi386)
2117 oc->formatName = "PEi386";
2118 # elif defined(OBJFORMAT_MACHO)
2119 oc->formatName = "Mach-O";
2120 # else
2121 stgFree(oc);
2122 barf("loadObj: not implemented on this platform");
2123 # endif
2124
2125 oc->image = image;
2126 oc->fileName = pathdup(path);
2127
2128 if (archiveMemberName) {
2129 oc->archiveMemberName = stgMallocBytes( strlen(archiveMemberName)+1, "loadObj" );
2130 strcpy(oc->archiveMemberName, archiveMemberName);
2131 }
2132 else {
2133 oc->archiveMemberName = NULL;
2134 }
2135
2136 oc->fileSize = imageSize;
2137 oc->symbols = NULL;
2138 oc->sections = NULL;
2139 oc->proddables = NULL;
2140
2141 #ifndef USE_MMAP
2142 #ifdef darwin_HOST_OS
2143 oc->misalignment = misalignment;
2144 #endif
2145 #endif
2146
2147 /* chain it onto the list of objects */
2148 oc->next = objects;
2149 objects = oc;
2150
2151 IF_DEBUG(linker, debugBelch("mkOc: done\n"));
2152 return oc;
2153 }
2154
2155 HsInt
2156 loadArchive( pathchar *path )
2157 {
2158 ObjectCode* oc;
2159 char *image;
2160 int memberSize;
2161 FILE *f;
2162 int n;
2163 size_t thisFileNameSize;
2164 char *fileName;
2165 size_t fileNameSize;
2166 int isObject, isGnuIndex;
2167 char tmp[20];
2168 char *gnuFileIndex;
2169 int gnuFileIndexSize;
2170 #if defined(darwin_HOST_OS)
2171 int i;
2172 uint32_t nfat_arch, nfat_offset, cputype, cpusubtype;
2173 #if defined(i386_HOST_ARCH)
2174 const uint32_t mycputype = CPU_TYPE_X86;
2175 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_ALL;
2176 #elif defined(x86_64_HOST_ARCH)
2177 const uint32_t mycputype = CPU_TYPE_X86_64;
2178 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_64_ALL;
2179 #elif defined(powerpc_HOST_ARCH)
2180 const uint32_t mycputype = CPU_TYPE_POWERPC;
2181 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2182 #elif defined(powerpc64_HOST_ARCH)
2183 const uint32_t mycputype = CPU_TYPE_POWERPC64;
2184 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2185 #else
2186 #error Unknown Darwin architecture
2187 #endif
2188 #if !defined(USE_MMAP)
2189 int misalignment;
2190 #endif
2191 #endif
2192
2193 IF_DEBUG(linker, debugBelch("loadArchive: start\n"));
2194 IF_DEBUG(linker, debugBelch("loadArchive: Loading archive `%" PATH_FMT" '\n", path));
2195
2196 gnuFileIndex = NULL;
2197 gnuFileIndexSize = 0;
2198
2199 fileNameSize = 32;
2200 fileName = stgMallocBytes(fileNameSize, "loadArchive(fileName)");
2201
2202 f = pathopen(path, WSTR("rb"));
2203 if (!f)
2204 barf("loadObj: can't read `%s'", path);
2205
2206 /* Check if this is an archive by looking for the magic "!<arch>\n"
2207 * string. Usually, if this fails, we barf and quit. On Darwin however,
2208 * we may have a fat archive, which contains archives for more than
2209 * one architecture. Fat archives start with the magic number 0xcafebabe,
2210 * always stored big endian. If we find a fat_header, we scan through
2211 * the fat_arch structs, searching through for one for our host
2212 * architecture. If a matching struct is found, we read the offset
2213 * of our archive data (nfat_offset) and seek forward nfat_offset bytes
2214 * from the start of the file.
2215 *
2216 * A subtlety is that all of the members of the fat_header and fat_arch
2217 * structs are stored big endian, so we need to call byte order
2218 * conversion functions.
2219 *
2220 * If we find the appropriate architecture in a fat archive, we gobble
2221 * its magic "!<arch>\n" string and continue processing just as if
2222 * we had a single architecture archive.
2223 */
2224
2225 n = fread ( tmp, 1, 8, f );
2226 if (n != 8)
2227 barf("loadArchive: Failed reading header from `%s'", path);
2228 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2229
2230 #if defined(darwin_HOST_OS)
2231 /* Not a standard archive, look for a fat archive magic number: */
2232 if (ntohl(*(uint32_t *)tmp) == FAT_MAGIC) {
2233 nfat_arch = ntohl(*(uint32_t *)(tmp + 4));
2234 IF_DEBUG(linker, debugBelch("loadArchive: found a fat archive containing %d architectures\n", nfat_arch));
2235 nfat_offset = 0;
2236
2237 for (i = 0; i < (int)nfat_arch; i++) {
2238 /* search for the right arch */
2239 n = fread( tmp, 1, 20, f );
2240 if (n != 8)
2241 barf("loadArchive: Failed reading arch from `%s'", path);
2242 cputype = ntohl(*(uint32_t *)tmp);
2243 cpusubtype = ntohl(*(uint32_t *)(tmp + 4));
2244
2245 if (cputype == mycputype && cpusubtype == mycpusubtype) {
2246 IF_DEBUG(linker, debugBelch("loadArchive: found my archive in a fat archive\n"));
2247 nfat_offset = ntohl(*(uint32_t *)(tmp + 8));
2248 break;
2249 }
2250 }
2251
2252 if (nfat_offset == 0) {
2253 barf ("loadArchive: searched %d architectures, but no host arch found", (int)nfat_arch);
2254 }
2255 else {
2256 n = fseek( f, nfat_offset, SEEK_SET );
2257 if (n != 0)
2258 barf("loadArchive: Failed to seek to arch in `%s'", path);
2259 n = fread ( tmp, 1, 8, f );
2260 if (n != 8)
2261 barf("loadArchive: Failed reading header from `%s'", path);
2262 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2263 barf("loadArchive: couldn't find archive in `%s' at offset %d", path, nfat_offset);
2264 }
2265 }
2266 }
2267 else {
2268 barf("loadArchive: Neither an archive, nor a fat archive: `%s'", path);
2269 }
2270
2271 #else
2272 barf("loadArchive: Not an archive: `%s'", path);
2273 #endif
2274 }
2275
2276 IF_DEBUG(linker, debugBelch("loadArchive: loading archive contents\n"));
2277
2278 while(1) {
2279 n = fread ( fileName, 1, 16, f );
2280 if (n != 16) {
2281 if (feof(f)) {
2282 IF_DEBUG(linker, debugBelch("loadArchive: EOF while reading from '%" PATH_FMT "'\n", path));
2283 break;
2284 }
2285 else {
2286 barf("loadArchive: Failed reading file name from `%s'", path);
2287 }
2288 }
2289
2290 #if defined(darwin_HOST_OS)
2291 if (strncmp(fileName, "!<arch>\n", 8) == 0) {
2292 IF_DEBUG(linker, debugBelch("loadArchive: found the start of another archive, breaking\n"));
2293 break;
2294 }
2295 #endif
2296
2297 n = fread ( tmp, 1, 12, f );
2298 if (n != 12)
2299 barf("loadArchive: Failed reading mod time from `%s'", path);
2300 n = fread ( tmp, 1, 6, f );
2301 if (n != 6)
2302 barf("loadArchive: Failed reading owner from `%s'", path);
2303 n = fread ( tmp, 1, 6, f );
2304 if (n != 6)
2305 barf("loadArchive: Failed reading group from `%s'", path);
2306 n = fread ( tmp, 1, 8, f );
2307 if (n != 8)
2308 barf("loadArchive: Failed reading mode from `%s'", path);
2309 n = fread ( tmp, 1, 10, f );
2310 if (n != 10)
2311 barf("loadArchive: Failed reading size from `%s'", path);
2312 tmp[10] = '\0';
2313 for (n = 0; isdigit(tmp[n]); n++);
2314 tmp[n] = '\0';
2315 memberSize = atoi(tmp);
2316
2317 IF_DEBUG(linker, debugBelch("loadArchive: size of this archive member is %d\n", memberSize));
2318 n = fread ( tmp, 1, 2, f );
2319 if (n != 2)
2320 barf("loadArchive: Failed reading magic from `%s'", path);
2321 if (strncmp(tmp, "\x60\x0A", 2) != 0)
2322 barf("loadArchive: Failed reading magic from `%s' at %ld. Got %c%c",
2323 path, ftell(f), tmp[0], tmp[1]);
2324
2325 isGnuIndex = 0;
2326 /* Check for BSD-variant large filenames */
2327 if (0 == strncmp(fileName, "#1/", 3)) {
2328 fileName[16] = '\0';
2329 if (isdigit(fileName[3])) {
2330 for (n = 4; isdigit(fileName[n]); n++);
2331 fileName[n] = '\0';
2332 thisFileNameSize = atoi(fileName + 3);
2333 memberSize -= thisFileNameSize;
2334 if (thisFileNameSize >= fileNameSize) {
2335 /* Double it to avoid potentially continually
2336 increasing it by 1 */
2337 fileNameSize = thisFileNameSize * 2;
2338 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2339 }
2340 n = fread ( fileName, 1, thisFileNameSize, f );
2341 if (n != (int)thisFileNameSize) {
2342 barf("loadArchive: Failed reading filename from `%s'",
2343 path);
2344 }
2345 fileName[thisFileNameSize] = 0;
2346
2347 /* On OS X at least, thisFileNameSize is the size of the
2348 fileName field, not the length of the fileName
2349 itself. */
2350 thisFileNameSize = strlen(fileName);
2351 }
2352 else {
2353 barf("loadArchive: BSD-variant filename size not found while reading filename from `%s'", path);
2354 }
2355 }
2356 /* Check for GNU file index file */
2357 else if (0 == strncmp(fileName, "//", 2)) {
2358 fileName[0] = '\0';
2359 thisFileNameSize = 0;
2360 isGnuIndex = 1;
2361 }
2362 /* Check for a file in the GNU file index */
2363 else if (fileName[0] == '/') {
2364 if (isdigit(fileName[1])) {
2365 int i;
2366
2367 for (n = 2; isdigit(fileName[n]); n++);
2368 fileName[n] = '\0';
2369 n = atoi(fileName + 1);
2370
2371 if (gnuFileIndex == NULL) {
2372 barf("loadArchive: GNU-variant filename without an index while reading from `%s'", path);
2373 }
2374 if (n < 0 || n > gnuFileIndexSize) {
2375 barf("loadArchive: GNU-variant filename offset %d out of range [0..%d] while reading filename from `%s'", n, gnuFileIndexSize, path);
2376 }
2377 if (n != 0 && gnuFileIndex[n - 1] != '\n') {
2378 barf("loadArchive: GNU-variant filename offset %d invalid (range [0..%d]) while reading filename from `%s'", n, gnuFileIndexSize, path);
2379 }
2380 for (i = n; gnuFileIndex[i] != '/'; i++);
2381 thisFileNameSize = i - n;
2382 if (thisFileNameSize >= fileNameSize) {
2383 /* Double it to avoid potentially continually
2384 increasing it by 1 */
2385 fileNameSize = thisFileNameSize * 2;
2386 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2387 }
2388 memcpy(fileName, gnuFileIndex + n, thisFileNameSize);
2389 fileName[thisFileNameSize] = '\0';
2390 }
2391 else if (fileName[1] == ' ') {
2392 fileName[0] = '\0';
2393 thisFileNameSize = 0;
2394 }
2395 else {
2396 barf("loadArchive: GNU-variant filename offset not found while reading filename from `%s'", path);
2397 }
2398 }
2399 /* Finally, the case where the filename field actually contains
2400 the filename */
2401 else {
2402 /* GNU ar terminates filenames with a '/', this allowing
2403 spaces in filenames. So first look to see if there is a
2404 terminating '/'. */
2405 for (thisFileNameSize = 0;
2406 thisFileNameSize < 16;
2407 thisFileNameSize++) {
2408 if (fileName[thisFileNameSize] == '/') {
2409 fileName[thisFileNameSize] = '\0';
2410 break;
2411 }
2412 }
2413 /* If we didn't find a '/', then a space teminates the
2414 filename. Note that if we don't find one, then
2415 thisFileNameSize ends up as 16, and we already have the
2416 '\0' at the end. */
2417 if (thisFileNameSize == 16) {
2418 for (thisFileNameSize = 0;
2419 thisFileNameSize < 16;
2420 thisFileNameSize++) {
2421 if (fileName[thisFileNameSize] == ' ') {
2422 fileName[thisFileNameSize] = '\0';
2423 break;
2424 }
2425 }
2426 }
2427 }
2428
2429 IF_DEBUG(linker,
2430 debugBelch("loadArchive: Found member file `%s'\n", fileName));
2431
2432 isObject = thisFileNameSize >= 2
2433 && fileName[thisFileNameSize - 2] == '.'
2434 && fileName[thisFileNameSize - 1] == 'o';
2435
2436 IF_DEBUG(linker, debugBelch("loadArchive: \tthisFileNameSize = %d\n", (int)thisFileNameSize));
2437 IF_DEBUG(linker, debugBelch("loadArchive: \tisObject = %d\n", isObject));
2438
2439 if (isObject) {
2440 char *archiveMemberName;
2441
2442 IF_DEBUG(linker, debugBelch("loadArchive: Member is an object file...loading...\n"));
2443
2444 /* We can't mmap from the archive directly, as object
2445 files need to be 8-byte aligned but files in .ar
2446 archives are 2-byte aligned. When possible we use mmap
2447 to get some anonymous memory, as on 64-bit platforms if
2448 we use malloc then we can be given memory above 2^32.
2449 In the mmap case we're probably wasting lots of space;
2450 we could do better. */
2451 #if defined(USE_MMAP)
2452 image = mmapForLinker(memberSize, MAP_ANONYMOUS, -1);
2453 #elif defined(mingw32_HOST_OS)
2454 // TODO: We would like to use allocateExec here, but allocateExec
2455 // cannot currently allocate blocks large enough.
2456 {
2457 int offset;
2458 #if defined(x86_64_HOST_ARCH)
2459 /* We get back 8-byte aligned memory (is that guaranteed?), but
2460 the offsets to the sections within the file are all 4 mod 8
2461 (is that guaranteed?). We therefore need to offset the image
2462 by 4, so that all the pointers are 8-byte aligned, so that
2463 pointer tagging works. */
2464 offset = 4;
2465 #else
2466 offset = 0;
2467 #endif
2468 image = VirtualAlloc(NULL, memberSize + offset,
2469 MEM_RESERVE | MEM_COMMIT,
2470 PAGE_EXECUTE_READWRITE);
2471 image += offset;
2472 }
2473 #elif defined(darwin_HOST_OS)
2474 /* See loadObj() */
2475 misalignment = machoGetMisalignment(f);
2476 image = stgMallocBytes(memberSize + misalignment, "loadArchive(image)");
2477 image += misalignment;
2478 #else
2479 image = stgMallocBytes(memberSize, "loadArchive(image)");
2480 #endif
2481 n = fread ( image, 1, memberSize, f );
2482 if (n != memberSize) {
2483 barf("loadArchive: error whilst reading `%s'", path);
2484 }
2485
2486 archiveMemberName = stgMallocBytes(pathlen(path) + thisFileNameSize + 3,
2487 "loadArchive(file)");
2488 sprintf(archiveMemberName, "%" PATH_FMT "(%.*s)",
2489 path, (int)thisFileNameSize, fileName);
2490
2491 oc = mkOc(path, image, memberSize, archiveMemberName
2492 #ifndef USE_MMAP
2493 #ifdef darwin_HOST_OS
2494 , misalignment
2495 #endif
2496 #endif
2497 );
2498
2499 stgFree(archiveMemberName);
2500
2501 if (0 == loadOc(oc)) {
2502 stgFree(fileName);
2503 return 0;
2504 }
2505 }
2506 else if (isGnuIndex) {
2507 if (gnuFileIndex != NULL) {
2508 barf("loadArchive: GNU-variant index found, but already have an index, while reading filename from `%s'", path);
2509 }
2510 IF_DEBUG(linker, debugBelch("loadArchive: Found GNU-variant file index\n"));
2511 #ifdef USE_MMAP
2512 gnuFileIndex = mmapForLinker(memberSize + 1, MAP_ANONYMOUS, -1);
2513 #else
2514 gnuFileIndex = stgMallocBytes(memberSize + 1, "loadArchive(image)");
2515 #endif
2516 n = fread ( gnuFileIndex, 1, memberSize, f );
2517 if (n != memberSize) {
2518 barf("loadArchive: error whilst reading `%s'", path);
2519 }
2520 gnuFileIndex[memberSize] = '/';
2521 gnuFileIndexSize = memberSize;
2522 }
2523 else {
2524 IF_DEBUG(linker, debugBelch("loadArchive: '%s' does not appear to be an object file\n", fileName));
2525 n = fseek(f, memberSize, SEEK_CUR);
2526 if (n != 0)
2527 barf("loadArchive: error whilst seeking by %d in `%s'",
2528 memberSize, path);
2529 }
2530
2531 /* .ar files are 2-byte aligned */
2532 if (memberSize % 2) {
2533 IF_DEBUG(linker, debugBelch("loadArchive: trying to read one pad byte\n"));
2534 n = fread ( tmp, 1, 1, f );
2535 if (n != 1) {
2536 if (feof(f)) {
2537 IF_DEBUG(linker, debugBelch("loadArchive: found EOF while reading one pad byte\n"));
2538 break;
2539 }
2540 else {
2541 barf("loadArchive: Failed reading padding from `%s'", path);
2542 }
2543 }
2544 IF_DEBUG(linker, debugBelch("loadArchive: successfully read one pad byte\n"));
2545 }
2546 IF_DEBUG(linker, debugBelch("loadArchive: reached end of archive loading while loop\n"));
2547 }
2548
2549 fclose(f);
2550
2551 stgFree(fileName);
2552 if (gnuFileIndex != NULL) {
2553 #ifdef USE_MMAP
2554 munmap(gnuFileIndex, gnuFileIndexSize + 1);
2555 #else
2556 stgFree(gnuFileIndex);
2557 #endif
2558 }
2559
2560 IF_DEBUG(linker, debugBelch("loadArchive: done\n"));
2561 return 1;
2562 }
2563
2564 /* -----------------------------------------------------------------------------
2565 * Load an obj (populate the global symbol table, but don't resolve yet)
2566 *
2567 * Returns: 1 if ok, 0 on error.
2568 */
2569 HsInt
2570 loadObj( pathchar *path )
2571 {
2572 ObjectCode* oc;
2573 char *image;
2574 int fileSize;
2575 struct_stat st;
2576 int r;
2577 #ifdef USE_MMAP
2578 int fd;
2579 #else
2580 FILE *f;
2581 # if defined(darwin_HOST_OS)
2582 int misalignment;
2583 # endif
2584 #endif
2585 IF_DEBUG(linker, debugBelch("loadObj %" PATH_FMT "\n", path));
2586
2587 initLinker();
2588
2589 /* debugBelch("loadObj %s\n", path ); */
2590
2591 /* Check that we haven't already loaded this object.
2592 Ignore requests to load multiple times */
2593 {
2594 ObjectCode *o;
2595 int is_dup = 0;
2596 for (o = objects; o; o = o->next) {
2597 if (0 == pathcmp(o->fileName, path)) {
2598 is_dup = 1;
2599 break; /* don't need to search further */
2600 }
2601 }
2602 if (is_dup) {
2603 IF_DEBUG(linker, debugBelch(
2604 "GHCi runtime linker: warning: looks like you're trying to load the\n"
2605 "same object file twice:\n"
2606 " %" PATH_FMT "\n"
2607 "GHCi will ignore this, but be warned.\n"
2608 , path));
2609 return 1; /* success */
2610 }
2611 }
2612
2613 r = pathstat(path, &st);
2614 if (r == -1) {
2615 IF_DEBUG(linker, debugBelch("File doesn't exist\n"));
2616 return 0;
2617 }
2618
2619 fileSize = st.st_size;
2620
2621 #ifdef USE_MMAP
2622 /* On many architectures malloc'd memory isn't executable, so we need to use mmap. */
2623
2624 #if defined(openbsd_HOST_OS)
2625 fd = open(path, O_RDONLY, S_IRUSR);
2626 #else
2627 fd = open(path, O_RDONLY);
2628 #endif
2629 if (fd == -1)
2630 barf("loadObj: can't open `%s'", path);
2631
2632 image = mmapForLinker(fileSize, 0, fd);
2633
2634 close(fd);
2635
2636 #else /* !USE_MMAP */
2637 /* load the image into memory */
2638 f = pathopen(path, WSTR("rb"));
2639 if (!f)
2640 barf("loadObj: can't read `%" PATH_FMT "'", path);
2641
2642 # if defined(mingw32_HOST_OS)
2643 // TODO: We would like to use allocateExec here, but allocateExec
2644 // cannot currently allocate blocks large enough.
2645 {
2646 int offset;
2647 #if defined(x86_64_HOST_ARCH)
2648 /* We get back 8-byte aligned memory (is that guaranteed?), but
2649 the offsets to the sections within the file are all 4 mod 8
2650 (is that guaranteed?). We therefore need to offset the image
2651 by 4, so that all the pointers are 8-byte aligned, so that
2652 pointer tagging works. */
2653 offset = 4;
2654 #else
2655 offset = 0;
2656 #endif
2657 image = VirtualAlloc(NULL, fileSize + offset, MEM_RESERVE | MEM_COMMIT,
2658 PAGE_EXECUTE_READWRITE);
2659 image += offset;
2660 }
2661 # elif defined(darwin_HOST_OS)
2662 // In a Mach-O .o file, all sections can and will be misaligned
2663 // if the total size of the headers is not a multiple of the
2664 // desired alignment. This is fine for .o files that only serve
2665 // as input for the static linker, but it's not fine for us,
2666 // as SSE (used by gcc for floating point) and Altivec require
2667 // 16-byte alignment.
2668 // We calculate the correct alignment from the header before
2669 // reading the file, and then we misalign image on purpose so
2670 // that the actual sections end up aligned again.
2671 misalignment = machoGetMisalignment(f);
2672 image = stgMallocBytes(fileSize + misalignment, "loadObj(image)");
2673 image += misalignment;
2674 # else
2675 image = stgMallocBytes(fileSize, "loadObj(image)");
2676 # endif
2677
2678 {
2679 int n;
2680 n = fread ( image, 1, fileSize, f );
2681 if (n != fileSize)
2682 barf("loadObj: error whilst reading `%s'", path);
2683 }
2684 fclose(f);
2685 #endif /* USE_MMAP */
2686
2687 oc = mkOc(path, image, fileSize, NULL
2688 #ifndef USE_MMAP
2689 #ifdef darwin_HOST_OS
2690 , misalignment
2691 #endif
2692 #endif
2693 );
2694
2695 return loadOc(oc);
2696 }
2697
2698 static HsInt
2699 loadOc( ObjectCode* oc ) {
2700 int r;
2701
2702 IF_DEBUG(linker, debugBelch("loadOc: start\n"));
2703
2704 # if defined(OBJFORMAT_MACHO) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH))
2705 r = ocAllocateSymbolExtras_MachO ( oc );
2706 if (!r) {
2707 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_MachO failed\n"));
2708 return r;
2709 }
2710 # elif defined(OBJFORMAT_ELF) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH))
2711 r = ocAllocateSymbolExtras_ELF ( oc );
2712 if (!r) {
2713 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_ELF failed\n"));
2714 return r;
2715 }
2716 #endif
2717
2718 /* verify the in-memory image */
2719 # if defined(OBJFORMAT_ELF)
2720 r = ocVerifyImage_ELF ( oc );
2721 # elif defined(OBJFORMAT_PEi386)
2722 r = ocVerifyImage_PEi386 ( oc );
2723 # elif defined(OBJFORMAT_MACHO)
2724 r = ocVerifyImage_MachO ( oc );
2725 # else
2726 barf("loadObj: no verify method");
2727 # endif
2728 if (!r) {
2729 IF_DEBUG(linker, debugBelch("loadOc: ocVerifyImage_* failed\n"));
2730 return r;
2731 }
2732
2733 /* build the symbol list for this image */
2734 # if defined(OBJFORMAT_ELF)
2735 r = ocGetNames_ELF ( oc );
2736 # elif defined(OBJFORMAT_PEi386)
2737 r = ocGetNames_PEi386 ( oc );
2738 # elif defined(OBJFORMAT_MACHO)
2739 r = ocGetNames_MachO ( oc );
2740 # else
2741 barf("loadObj: no getNames method");
2742 # endif
2743 if (!r) {
2744 IF_DEBUG(linker, debugBelch("loadOc: ocGetNames_* failed\n"));
2745 return r;
2746 }
2747
2748 /* loaded, but not resolved yet */
2749 oc->status = OBJECT_LOADED;
2750 IF_DEBUG(linker, debugBelch("loadOc: done.\n"));
2751
2752 return 1;
2753 }
2754
2755 /* -----------------------------------------------------------------------------
2756 * resolve all the currently unlinked objects in memory
2757 *
2758 * Returns: 1 if ok, 0 on error.
2759 */
2760 HsInt
2761 resolveObjs( void )
2762 {
2763 ObjectCode *oc;
2764 int r;
2765
2766 IF_DEBUG(linker, debugBelch("resolveObjs: start\n"));
2767 initLinker();
2768
2769 for (oc = objects; oc; oc = oc->next) {
2770 if (oc->status != OBJECT_RESOLVED) {
2771 # if defined(OBJFORMAT_ELF)
2772 r = ocResolve_ELF ( oc );
2773 # elif defined(OBJFORMAT_PEi386)
2774 r = ocResolve_PEi386 ( oc );
2775 # elif defined(OBJFORMAT_MACHO)
2776 r = ocResolve_MachO ( oc );
2777 # else
2778 barf("resolveObjs: not implemented on this platform");
2779 # endif
2780 if (!r) { return r; }
2781
2782 // run init/init_array/ctors/mod_init_func
2783 #if defined(OBJFORMAT_ELF)
2784 r = ocRunInit_ELF ( oc );
2785 #elif defined(OBJFORMAT_PEi386)
2786 r = ocRunInit_PEi386 ( oc );
2787 #elif defined(OBJFORMAT_MACHO)
2788 r = ocRunInit_MachO ( oc );
2789 #else
2790 barf("resolveObjs: initializers not implemented on this platform");
2791 #endif
2792 if (!r) { return r; }
2793
2794 oc->status = OBJECT_RESOLVED;
2795 }
2796 }
2797 IF_DEBUG(linker, debugBelch("resolveObjs: done\n"));
2798 return 1;
2799 }
2800
2801 /* -----------------------------------------------------------------------------
2802 * delete an object from the pool
2803 */
2804 HsInt
2805 unloadObj( pathchar *path )
2806 {
2807 ObjectCode *oc, *prev, *next;
2808 HsBool unloadedAnyObj = HS_BOOL_FALSE;
2809
2810 ASSERT(symhash != NULL);
2811 ASSERT(objects != NULL);
2812
2813 initLinker();
2814
2815 IF_DEBUG(linker, debugBelch("unloadObj: %" PATH_FMT "\n", path));
2816
2817 prev = NULL;
2818 for (oc = objects; oc; prev = oc, oc = next) {
2819 next = oc->next;
2820
2821 if (!pathcmp(oc->fileName,path)) {
2822
2823 /* Remove all the mappings for the symbols within this
2824 * object..
2825 */
2826 {
2827 int i;
2828 for (i = 0; i < oc->n_symbols; i++) {
2829 if (oc->symbols[i] != NULL) {
2830 removeStrHashTable(symhash, oc->symbols[i], NULL);
2831 }
2832 }
2833 }
2834
2835 if (prev == NULL) {
2836 objects = oc->next;
2837 } else {
2838 prev->next = oc->next;
2839 }
2840 oc->next = unloaded_objects;
2841 unloaded_objects = oc;
2842
2843 // The data itself and a few other bits (oc->fileName,
2844 // oc->archiveMemberName) are kept until freeObjectCode(),
2845 // which is only called when it has been determined that
2846 // it is safe to unload the object.
2847 stgFree(oc->symbols);
2848
2849 {
2850 Section *s, *nexts;
2851
2852 for (s = oc->sections; s != NULL; s = nexts) {
2853 nexts = s->next;
2854 stgFree(s);
2855 }
2856 }
2857
2858 freeProddableBlocks(oc);
2859
2860 oc->status = OBJECT_UNLOADED;
2861
2862 /* This could be a member of an archive so continue
2863 * unloading other members. */
2864 unloadedAnyObj = HS_BOOL_TRUE;
2865 }
2866 }
2867
2868 if (unloadedAnyObj) {
2869 return 1;
2870 }
2871 else {
2872 errorBelch("unloadObj: can't find `%" PATH_FMT "' to unload", path);
2873 return 0;
2874 }
2875 }
2876
2877 /* -----------------------------------------------------------------------------
2878 * Sanity checking. For each ObjectCode, maintain a list of address ranges
2879 * which may be prodded during relocation, and abort if we try and write
2880 * outside any of these.
2881 */
2882 static void
2883 addProddableBlock ( ObjectCode* oc, void* start, int size )
2884 {
2885 ProddableBlock* pb
2886 = stgMallocBytes(sizeof(ProddableBlock), "addProddableBlock");
2887
2888 IF_DEBUG(linker, debugBelch("addProddableBlock: %p %p %d\n", oc, start, size));
2889 ASSERT(size > 0);
2890 pb->start = start;
2891 pb->size = size;
2892 pb->next = oc->proddables;
2893 oc->proddables = pb;
2894 }
2895
2896 static void
2897 checkProddableBlock (ObjectCode *oc, void *addr, size_t size )
2898 {
2899 ProddableBlock* pb;
2900
2901 for (pb = oc->proddables; pb != NULL; pb = pb->next) {
2902 char* s = (char*)(pb->start);
2903 char* e = s + pb->size;
2904 char* a = (char*)addr;
2905 if (a >= s && (a+size) <= e) return;
2906 }
2907 barf("checkProddableBlock: invalid fixup in runtime linker: %p", addr);
2908 }
2909
2910 static void freeProddableBlocks (ObjectCode *oc)
2911 {
2912 ProddableBlock *pb, *next;
2913
2914 for (pb = oc->proddables; pb != NULL; pb = next) {
2915 next = pb->next;
2916 stgFree(pb);
2917 }
2918 oc->proddables = NULL;
2919 }
2920
2921 /* -----------------------------------------------------------------------------
2922 * Section management.
2923 */
2924 static void
2925 addSection ( ObjectCode* oc, SectionKind kind,
2926 void* start, void* end )
2927 {
2928 Section* s = stgMallocBytes(sizeof(Section), "addSection");
2929 s->start = start;
2930 s->end = end;
2931 s->kind = kind;
2932 s->next = oc->sections;
2933 oc->sections = s;
2934
2935 IF_DEBUG(linker, debugBelch("addSection: %p-%p (size %lld), kind %d\n",
2936 start, ((char*)end)-1, ((long long)(size_t)end) - ((long long)(size_t)start) + 1, kind ));
2937 }
2938
2939
2940 /* --------------------------------------------------------------------------
2941 * Symbol Extras.
2942 * This is about allocating a small chunk of memory for every symbol in the
2943 * object file. We make sure that the SymboLExtras are always "in range" of
2944 * limited-range PC-relative instructions on various platforms by allocating
2945 * them right next to the object code itself.
2946 */
2947
2948 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2949 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2950
2951 /*
2952 ocAllocateSymbolExtras
2953
2954 Allocate additional space at the end of the object file image to make room
2955 for jump islands (powerpc, x86_64, arm) and GOT entries (x86_64).
2956
2957 PowerPC relative branch instructions have a 24 bit displacement field.
2958 As PPC code is always 4-byte-aligned, this yields a +-32MB range.
2959 If a particular imported symbol is outside this range, we have to redirect
2960 the jump to a short piece of new code that just loads the 32bit absolute
2961 address and jumps there.
2962 On x86_64, PC-relative jumps and PC-relative accesses to the GOT are limited
2963 to 32 bits (+-2GB).
2964
2965 This function just allocates space for one SymbolExtra for every
2966 undefined symbol in the object file. The code for the jump islands is
2967 filled in by makeSymbolExtra below.
2968 */
2969
2970 static int ocAllocateSymbolExtras( ObjectCode* oc, int count, int first )
2971 {
2972 #ifdef USE_MMAP
2973 int pagesize, n, m;
2974 #endif
2975 int aligned;
2976 #ifndef USE_MMAP
2977 int misalignment = 0;
2978 #ifdef darwin_HOST_OS
2979 misalignment = oc->misalignment;
2980 #endif
2981 #endif
2982
2983 if( count > 0 )
2984 {
2985 // round up to the nearest 4
2986 aligned = (oc->fileSize + 3) & ~3;
2987
2988 #ifdef USE_MMAP
2989 pagesize = getpagesize();
2990 n = ROUND_UP( oc->fileSize, pagesize );
2991 m = ROUND_UP( aligned + sizeof (SymbolExtra) * count, pagesize );
2992
2993 /* we try to use spare space at the end of the last page of the
2994 * image for the jump islands, but if there isn't enough space
2995 * then we have to map some (anonymously, remembering MAP_32BIT).
2996 */
2997 if( m > n ) // we need to allocate more pages
2998 {
2999 if (USE_CONTIGUOUS_MMAP)
3000 {
3001 /* Keep image and symbol_extras contiguous */
3002 void *new = mmapForLinker(n + (sizeof(SymbolExtra) * count),
3003 MAP_ANONYMOUS, -1);
3004 if (new)
3005 {
3006 memcpy(new, oc->image, oc->fileSize);
3007 munmap(oc->image, n);
3008 oc->image = new;
3009 oc->fileSize = n + (sizeof(SymbolExtra) * count);
3010 oc->symbol_extras = (SymbolExtra *) (oc->image + n);
3011 }
3012 else
3013 oc->symbol_extras = NULL;
3014 }
3015 else
3016 {
3017 oc->symbol_extras = mmapForLinker(sizeof(SymbolExtra) * count,
3018 MAP_ANONYMOUS, -1);
3019 }
3020 }
3021 else
3022 {
3023 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3024 }
3025 #else
3026 oc->image -= misalignment;
3027 oc->image = stgReallocBytes( oc->image,
3028 misalignment +
3029 aligned + sizeof (SymbolExtra) * count,
3030 "ocAllocateSymbolExtras" );
3031 oc->image += misalignment;
3032
3033 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3034 #endif /* USE_MMAP */
3035
3036 memset( oc->symbol_extras, 0, sizeof (SymbolExtra) * count );
3037 }
3038 else
3039 oc->symbol_extras = NULL;
3040
3041 oc->first_symbol_extra = first;
3042 oc->n_symbol_extras = count;
3043
3044 return 1;
3045 }
3046
3047 #endif
3048 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3049
3050 #if defined(arm_HOST_ARCH)
3051
3052 static void
3053 ocFlushInstructionCache( ObjectCode *oc )
3054 {
3055 // Object code
3056 __clear_cache(oc->image, oc->image + oc->fileSize);
3057 // Jump islands
3058 __clear_cache(oc->symbol_extras, &oc->symbol_extras[oc->n_symbol_extras]);
3059 }
3060
3061 #endif
3062
3063 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3064 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3065
3066 static SymbolExtra* makeSymbolExtra( ObjectCode* oc,
3067 unsigned long symbolNumber,
3068 unsigned long target )
3069 {
3070 SymbolExtra *extra;
3071
3072 ASSERT( symbolNumber >= oc->first_symbol_extra
3073 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3074
3075 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3076
3077 #ifdef powerpc_HOST_ARCH
3078 // lis r12, hi16(target)
3079 extra->jumpIsland.lis_r12 = 0x3d80;
3080 extra->jumpIsland.hi_addr = target >> 16;
3081
3082 // ori r12, r12, lo16(target)
3083 extra->jumpIsland.ori_r12_r12 = 0x618c;
3084 extra->jumpIsland.lo_addr = target & 0xffff;
3085
3086 // mtctr r12
3087 extra->jumpIsland.mtctr_r12 = 0x7d8903a6;
3088
3089 // bctr
3090 extra->jumpIsland.bctr = 0x4e800420;
3091 #endif
3092 #ifdef x86_64_HOST_ARCH
3093 // jmp *-14(%rip)
3094 static uint8_t jmp[] = { 0xFF, 0x25, 0xF2, 0xFF, 0xFF, 0xFF };
3095 extra->addr = target;
3096 memcpy(extra->jumpIsland, jmp, 6);
3097 #endif
3098
3099 return extra;
3100 }
3101
3102 #endif
3103 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3104
3105 #ifdef arm_HOST_ARCH
3106 static SymbolExtra* makeArmSymbolExtra( ObjectCode* oc,
3107 unsigned long symbolNumber,
3108 unsigned long target,
3109 int fromThumb,
3110 int toThumb )
3111 {
3112 SymbolExtra *extra;
3113
3114 ASSERT( symbolNumber >= oc->first_symbol_extra
3115 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3116
3117 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3118
3119 // Make sure instruction mode bit is set properly
3120 if (toThumb)
3121 target |= 1;
3122 else
3123 target &= ~1;
3124
3125 if (!fromThumb) {
3126 // In ARM encoding:
3127 // movw r12, #0
3128 // movt r12, #0
3129 // bx r12
3130 uint32_t code[] = { 0xe300c000, 0xe340c000, 0xe12fff1c };
3131
3132 // Patch lower half-word into movw
3133 code[0] |= ((target>>12) & 0xf) << 16;
3134 code[0] |= target & 0xfff;
3135 // Patch upper half-word into movt
3136 target >>= 16;
3137 code[1] |= ((target>>12) & 0xf) << 16;
3138 code[1] |= target & 0xfff;
3139
3140 memcpy(extra->jumpIsland, code, 12);
3141
3142 } else {
3143 // In Thumb encoding:
3144 // movw r12, #0
3145 // movt r12, #0
3146 // bx r12
3147 uint16_t code[] = { 0xf240, 0x0c00,
3148 0xf2c0, 0x0c00,
3149 0x4760 };
3150
3151 // Patch lower half-word into movw
3152 code[0] |= (target>>12) & 0xf;
3153 code[0] |= ((target>>11) & 0x1) << 10;
3154 code[1] |= ((target>>8) & 0x7) << 12;
3155 code[1] |= target & 0xff;
3156 // Patch upper half-word into movt
3157 target >>= 16;
3158 code[2] |= (target>>12) & 0xf;
3159 code[2] |= ((target>>11) & 0x1) << 10;
3160 code[3] |= ((target>>8) & 0x7) << 12;
3161 code[3] |= target & 0xff;
3162
3163 memcpy(extra->jumpIsland, code, 10);
3164 }
3165
3166 return extra;
3167 }
3168 #endif // arm_HOST_ARCH
3169
3170 /* --------------------------------------------------------------------------
3171 * PowerPC specifics (instruction cache flushing)
3172 * ------------------------------------------------------------------------*/
3173
3174 #ifdef powerpc_HOST_ARCH
3175 /*
3176 ocFlushInstructionCache
3177
3178 Flush the data & instruction caches.
3179 Because the PPC has split data/instruction caches, we have to
3180 do that whenever we modify code at runtime.
3181 */
3182
3183 static void
3184 ocFlushInstructionCacheFrom(void* begin, size_t length)
3185 {
3186 size_t n = (length + 3) / 4;
3187 unsigned long* p = begin;
3188
3189 while (n--)
3190 {
3191 __asm__ volatile ( "dcbf 0,%0\n\t"
3192 "sync\n\t"
3193 "icbi 0,%0"
3194 :
3195 : "r" (p)
3196 );
3197 p++;
3198 }
3199 __asm__ volatile ( "sync\n\t"
3200 "isync"
3201 );
3202 }
3203
3204 static void
3205 ocFlushInstructionCache( ObjectCode *oc )
3206 {
3207 /* The main object code */
3208 ocFlushInstructionCacheFrom(oc->image
3209 #ifdef darwin_HOST_OS
3210 + oc->misalignment
3211 #endif
3212 , oc->fileSize);
3213
3214 /* Jump Islands */
3215 ocFlushInstructionCacheFrom(oc->symbol_extras, sizeof(SymbolExtra) * oc->n_symbol_extras);
3216 }
3217 #endif /* powerpc_HOST_ARCH */
3218
3219
3220 /* --------------------------------------------------------------------------
3221 * PEi386 specifics (Win32 targets)
3222 * ------------------------------------------------------------------------*/
3223
3224 /* The information for this linker comes from
3225 Microsoft Portable Executable
3226 and Common Object File Format Specification
3227 revision 5.1 January 1998
3228 which SimonM says comes from the MS Developer Network CDs.
3229
3230 It can be found there (on older CDs), but can also be found
3231 online at:
3232
3233 http://www.microsoft.com/hwdev/hardware/PECOFF.asp
3234
3235 (this is Rev 6.0 from February 1999).
3236
3237 Things move, so if that fails, try searching for it via
3238
3239 http://www.google.com/search?q=PE+COFF+specification
3240
3241 The ultimate reference for the PE format is the Winnt.h
3242 header file that comes with the Platform SDKs; as always,
3243 implementations will drift wrt their documentation.
3244
3245 A good background article on the PE format is Matt Pietrek's
3246 March 1994 article in Microsoft System Journal (MSJ)
3247 (Vol.9, No. 3): "Peering Inside the PE: A Tour of the
3248 Win32 Portable Executable File Format." The info in there
3249 has recently been updated in a two part article in
3250 MSDN magazine, issues Feb and March 2002,
3251 "Inside Windows: An In-Depth Look into the Win32 Portable
3252 Executable File Format"
3253
3254 John Levine's book "Linkers and Loaders" contains useful
3255 info on PE too.
3256 */
3257
3258
3259 #if defined(OBJFORMAT_PEi386)
3260
3261
3262
3263 typedef unsigned char UChar;
3264 typedef unsigned short UInt16;
3265 typedef unsigned int UInt32;
3266 typedef int Int32;
3267 typedef unsigned long long int UInt64;
3268
3269
3270 typedef
3271 struct {
3272 UInt16 Machine;
3273 UInt16 NumberOfSections;
3274 UInt32 TimeDateStamp;
3275 UInt32 PointerToSymbolTable;
3276 UInt32 NumberOfSymbols;
3277 UInt16 SizeOfOptionalHeader;
3278 UInt16 Characteristics;
3279 }
3280 COFF_header;
3281
3282 #define sizeof_COFF_header 20
3283
3284
3285 typedef
3286 struct {
3287 UChar Name[8];
3288 UInt32 VirtualSize;
3289 UInt32 VirtualAddress;
3290 UInt32 SizeOfRawData;
3291 UInt32 PointerToRawData;
3292 UInt32 PointerToRelocations;
3293 UInt32 PointerToLinenumbers;
3294 UInt16 NumberOfRelocations;
3295 UInt16 NumberOfLineNumbers;
3296 UInt32 Characteristics;
3297 }
3298 COFF_section;
3299
3300 #define sizeof_COFF_section 40
3301
3302
3303 typedef
3304 struct {
3305 UChar Name[8];
3306 UInt32 Value;
3307 UInt16 SectionNumber;
3308 UInt16 Type;
3309 UChar StorageClass;
3310 UChar NumberOfAuxSymbols;
3311 }
3312 COFF_symbol;
3313
3314 #define sizeof_COFF_symbol 18
3315
3316
3317 typedef
3318 struct {
3319 UInt32 VirtualAddress;
3320 UInt32 SymbolTableIndex;
3321 UInt16 Type;
3322 }
3323 COFF_reloc;
3324
3325 #define sizeof_COFF_reloc 10
3326
3327
3328 /* From PE spec doc, section 3.3.2 */
3329 /* Note use of MYIMAGE_* since IMAGE_* are already defined in
3330 windows.h -- for the same purpose, but I want to know what I'm
3331 getting, here. */
3332 #define MYIMAGE_FILE_RELOCS_STRIPPED 0x0001
3333 #define MYIMAGE_FILE_EXECUTABLE_IMAGE 0x0002
3334 #define MYIMAGE_FILE_DLL 0x2000
3335 #define MYIMAGE_FILE_SYSTEM 0x1000
3336 #define MYIMAGE_FILE_BYTES_REVERSED_HI 0x8000
3337 #define MYIMAGE_FILE_BYTES_REVERSED_LO 0x0080
3338 #define MYIMAGE_FILE_32BIT_MACHINE 0x0100
3339
3340 /* From PE spec doc, section 5.4.2 and 5.4.4 */
3341 #define MYIMAGE_SYM_CLASS_EXTERNAL 2
3342 #define MYIMAGE_SYM_CLASS_STATIC 3
3343 #define MYIMAGE_SYM_UNDEFINED 0
3344
3345 /* From PE spec doc, section 4.1 */
3346 #define MYIMAGE_SCN_CNT_CODE 0x00000020
3347 #define MYIMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
3348 #define MYIMAGE_SCN_LNK_NRELOC_OVFL 0x01000000
3349
3350 /* From PE spec doc, section 5.2.1 */
3351 #define MYIMAGE_REL_I386_DIR32 0x0006
3352 #define MYIMAGE_REL_I386_REL32 0x0014
3353
3354
3355 /* We use myindex to calculate array addresses, rather than
3356 simply doing the normal subscript thing. That's because
3357 some of the above structs have sizes which are not
3358 a whole number of words. GCC rounds their sizes up to a
3359 whole number of words, which means that the address calcs
3360 arising from using normal C indexing or pointer arithmetic
3361 are just plain wrong. Sigh.
3362 */
3363 static UChar *
3364 myindex ( int scale, void* base, int index )
3365 {
3366 return
3367 ((UChar*)base) + scale * index;
3368 }
3369
3370
3371 static void
3372 printName ( UChar* name, UChar* strtab )
3373 {
3374 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3375 UInt32 strtab_offset = * (UInt32*)(name+4);
3376 debugBelch("%s", strtab + strtab_offset );
3377 } else {
3378 int i;
3379 for (i = 0; i < 8; i++) {
3380 if (name[i] == 0) break;
3381 debugBelch("%c", name[i] );
3382 }
3383 }
3384 }
3385
3386
3387 static void
3388 copyName ( UChar* name, UChar* strtab, UChar* dst, int dstSize )
3389 {
3390 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3391 UInt32 strtab_offset = * (UInt32*)(name+4);
3392 strncpy ( (char*)dst, (char*)strtab+strtab_offset, dstSize );
3393 dst[dstSize-1] = 0;
3394 } else {
3395 int i = 0;
3396 while (1) {
3397 if (i >= 8) break;
3398 if (name[i] == 0) break;
3399 dst[i] = name[i];
3400 i++;
3401 }
3402 dst[i] = 0;
3403 }
3404 }
3405
3406
3407 static UChar *
3408 cstring_from_COFF_symbol_name ( UChar* name, UChar* strtab )
3409 {
3410 UChar* newstr;
3411 /* If the string is longer than 8 bytes, look in the
3412 string table for it -- this will be correctly zero terminated.
3413 */
3414 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3415 UInt32 strtab_offset = * (UInt32*)(name+4);
3416 return ((UChar*)strtab) + strtab_offset;
3417 }
3418 /* Otherwise, if shorter than 8 bytes, return the original,
3419 which by defn is correctly terminated.
3420 */
3421 if (name[7]==0) return name;
3422 /* The annoying case: 8 bytes. Copy into a temporary
3423 (XXX which is never freed ...)
3424 */
3425 newstr = stgMallocBytes(9, "cstring_from_COFF_symbol_name");
3426 ASSERT(newstr);
3427 strncpy((char*)newstr,(char*)name,8);
3428 newstr[8] = 0;
3429 return newstr;
3430 }
3431
3432 /* Getting the name of a section is mildly tricky, so we make a
3433 function for it. Sadly, in one case we have to copy the string
3434 (when it is exactly 8 bytes long there's no trailing '\0'), so for
3435 consistency we *always* copy the string; the caller must free it
3436 */
3437 static char *
3438 cstring_from_section_name (UChar* name, UChar* strtab)
3439 {
3440 char *newstr;
3441
3442 if (name[0]=='/') {
3443 int strtab_offset = strtol((char*)name+1,NULL,10);
3444 int len = strlen(((char*)strtab) + strtab_offset);
3445
3446 newstr = stgMallocBytes(len+1, "cstring_from_section_symbol_name");
3447 strcpy((char*)newstr, (char*)((UChar*)strtab) + strtab_offset);
3448 return newstr;
3449 }
3450 else
3451 {
3452 newstr = stgMallocBytes(9, "cstring_from_section_symbol_name");
3453 ASSERT(newstr);
3454 strncpy((char*)newstr,(char*)name,8);
3455 newstr[8] = 0;
3456 return newstr;
3457 }
3458 }
3459
3460 /* Just compares the short names (first 8 chars) */
3461 static COFF_section *
3462 findPEi386SectionCalled ( ObjectCode* oc, UChar* name )
3463 {
3464 int i;
3465 COFF_header* hdr
3466 = (COFF_header*)(oc->image);
3467 COFF_section* sectab
3468 = (COFF_section*) (
3469 ((UChar*)(oc->image))
3470 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3471 );
3472 for (i = 0; i < hdr->NumberOfSections; i++) {
3473 UChar* n1;
3474 UChar* n2;
3475 COFF_section* section_i
3476 = (COFF_section*)
3477 myindex ( sizeof_COFF_section, sectab, i );
3478 n1 = (UChar*) &(section_i->Name);
3479 n2 = name;
3480 if (n1[0]==n2[0] && n1[1]==n2[1] && n1[2]==n2[2] &&
3481 n1[3]==n2[3] && n1[4]==n2[4] && n1[5]==n2[5] &&
3482 n1[6]==n2[6] && n1[7]==n2[7])
3483 return section_i;
3484 }
3485
3486 return NULL;
3487 }
3488
3489 static void
3490 zapTrailingAtSign ( UChar* sym )
3491 {
3492 # define my_isdigit(c) ((c) >= '0' && (c) <= '9')
3493 int i, j;
3494 if (sym[0] == 0) return;
3495 i = 0;
3496 while (sym[i] != 0) i++;
3497 i--;
3498 j = i;
3499 while (j > 0 && my_isdigit(sym[j])) j--;
3500 if (j > 0 && sym[j] == '@' && j != i) sym[j] = 0;
3501 # undef my_isdigit
3502 }
3503
3504 static void *
3505 lookupSymbolInDLLs ( UChar *lbl )
3506 {
3507 OpenedDLL* o_dll;
3508 void *sym;
3509
3510 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
3511 /* debugBelch("look in %s for %s\n", o_dll->name, lbl); */
3512
3513 if (lbl[0] == '_') {
3514 /* HACK: if the name has an initial underscore, try stripping
3515 it off & look that up first. I've yet to verify whether there's
3516 a Rule that governs whether an initial '_' *should always* be
3517 stripped off when mapping from import lib name to the DLL name.
3518 */
3519 sym = GetProcAddress(o_dll->instance, (char*)(lbl+1));
3520 if (sym != NULL) {
3521 /*debugBelch("found %s in %s\n", lbl+1,o_dll->name);*/
3522 return sym;
3523 }
3524 }
3525 sym = GetProcAddress(o_dll->instance, (char*)lbl);
3526 if (sym != NULL) {
3527 /*debugBelch("found %s in %s\n", lbl,o_dll->name);*/
3528 return sym;
3529 }
3530 }
3531 return NULL;
3532 }
3533
3534
3535 static int
3536 ocVerifyImage_PEi386 ( ObjectCode* oc )
3537 {
3538 int i;
3539 UInt32 j, noRelocs;
3540 COFF_header* hdr;
3541 COFF_section* sectab;
3542 COFF_symbol* symtab;
3543 UChar* strtab;
3544 /* debugBelch("\nLOADING %s\n", oc->fileName); */
3545 hdr = (COFF_header*)(oc->image);
3546 sectab = (COFF_section*) (
3547 ((UChar*)(oc->image))
3548 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3549 );
3550 symtab = (COFF_symbol*) (
3551 ((UChar*)(oc->image))
3552 + hdr->PointerToSymbolTable
3553 );
3554 strtab = ((UChar*)symtab)
3555 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3556
3557 #if defined(i386_HOST_ARCH)
3558 if (hdr->Machine != 0x14c) {
3559 errorBelch("%" PATH_FMT ": Not x86 PEi386", oc->fileName);
3560 return 0;
3561 }
3562 #elif defined(x86_64_HOST_ARCH)
3563 if (hdr->Machine != 0x8664) {
3564 errorBelch("%" PATH_FMT ": Not x86_64 PEi386", oc->fileName);
3565 return 0;
3566 }
3567 #else
3568 errorBelch("PEi386 not supported on this arch");
3569 #endif
3570
3571 if (hdr->SizeOfOptionalHeader != 0) {
3572 errorBelch("%" PATH_FMT ": PEi386 with nonempty optional header", oc->fileName);
3573 return 0;
3574 }
3575 if ( /* (hdr->Characteristics & MYIMAGE_FILE_RELOCS_STRIPPED) || */
3576 (hdr->Characteristics & MYIMAGE_FILE_EXECUTABLE_IMAGE) ||
3577 (hdr->Characteristics & MYIMAGE_FILE_DLL) ||
3578 (hdr->Characteristics & MYIMAGE_FILE_SYSTEM) ) {
3579 errorBelch("%" PATH_FMT ": Not a PEi386 object file", oc->fileName);
3580 return 0;
3581 }
3582 if ( (hdr->Characteristics & MYIMAGE_FILE_BYTES_REVERSED_HI)
3583 /* || !(hdr->Characteristics & MYIMAGE_FILE_32BIT_MACHINE) */ ) {
3584 errorBelch("%" PATH_FMT ": Invalid PEi386 word size or endiannness: %d",
3585 oc->fileName,
3586 (int)(hdr->Characteristics));
3587 return 0;
3588 }
3589 /* If the string table size is way crazy, this might indicate that
3590 there are more than 64k relocations, despite claims to the
3591 contrary. Hence this test. */
3592 /* debugBelch("strtab size %d\n", * (UInt32*)strtab); */
3593 #if 0
3594 if ( (*(UInt32*)strtab) > 600000 ) {
3595 /* Note that 600k has no special significance other than being
3596 big enough to handle the almost-2MB-sized lumps that
3597 constitute HSwin32*.o. */
3598 debugBelch("PEi386 object has suspiciously large string table; > 64k relocs?");
3599 return 0;
3600 }
3601 #endif
3602
3603 /* No further verification after this point; only debug printing. */
3604 i = 0;
3605 IF_DEBUG(linker, i=1);
3606 if (i == 0) return 1;
3607
3608 debugBelch( "sectab offset = %" FMT_Int "\n", ((UChar*)sectab) - ((UChar*)hdr) );
3609 debugBelch( "symtab offset = %" FMT_Int "\n", ((UChar*)symtab) - ((UChar*)hdr) );
3610 debugBelch( "strtab offset = %" FMT_Int "\n", ((UChar*)strtab) - ((UChar*)hdr) );
3611
3612 debugBelch("\n" );
3613 debugBelch( "Machine: 0x%x\n", (UInt32)(hdr->Machine) );
3614 debugBelch( "# sections: %d\n", (UInt32)(hdr->NumberOfSections) );
3615 debugBelch( "time/date: 0x%x\n", (UInt32)(hdr->TimeDateStamp) );
3616 debugBelch( "symtab offset: %d\n", (UInt32)(hdr->PointerToSymbolTable) );
3617 debugBelch( "# symbols: %d\n", (UInt32)(hdr->NumberOfSymbols) );
3618 debugBelch( "sz of opt hdr: %d\n", (UInt32)(hdr->SizeOfOptionalHeader) );
3619 debugBelch( "characteristics: 0x%x\n", (UInt32)(hdr->Characteristics) );
3620
3621 /* Print the section table. */
3622 debugBelch("\n" );
3623 for (i = 0; i < hdr->NumberOfSections; i++) {
3624 COFF_reloc* reltab;
3625 COFF_section* sectab_i
3626 = (COFF_section*)
3627 myindex ( sizeof_COFF_section, sectab, i );
3628 debugBelch(
3629 "\n"
3630 "section %d\n"
3631 " name `",
3632 i
3633 );
3634 printName ( sectab_i->Name, strtab );
3635 debugBelch(
3636 "'\n"
3637 " vsize %d\n"
3638 " vaddr %d\n"
3639 " data sz %d\n"
3640 " data off %d\n"
3641 " num rel %d\n"
3642 " off rel %d\n"
3643 " ptr raw 0x%x\n",
3644 sectab_i->VirtualSize,
3645 sectab_i->VirtualAddress,
3646 sectab_i->SizeOfRawData,
3647 sectab_i->PointerToRawData,
3648 sectab_i->NumberOfRelocations,
3649 sectab_i->PointerToRelocations,
3650 sectab_i->PointerToRawData
3651 );
3652 reltab = (COFF_reloc*) (
3653 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
3654 );
3655
3656 if ( sectab_i->Characteristics & MYIMAGE_SCN_LNK_NRELOC_OVFL ) {
3657 /* If the relocation field (a short) has overflowed, the
3658 * real count can be found in the first reloc entry.
3659 *
3660 * See Section 4.1 (last para) of the PE spec (rev6.0).
3661 */
3662 COFF_reloc* rel = (COFF_reloc*)
3663 myindex ( sizeof_COFF_reloc, reltab, 0 );
3664 noRelocs = rel->VirtualAddress;
3665 j = 1;
3666 } else {
3667 noRelocs = sectab_i->NumberOfRelocations;
3668 j = 0;
3669 }
3670
3671 for (; j < noRelocs; j++) {
3672 COFF_symbol* sym;
3673 COFF_reloc* rel = (COFF_reloc*)
3674 myindex ( sizeof_COFF_reloc, reltab, j );
3675 debugBelch(
3676 " type 0x%-4x vaddr 0x%-8x name `",
3677 (UInt32)rel->Type,
3678 rel->VirtualAddress );
3679 sym = (COFF_symbol*)
3680 myindex ( sizeof_COFF_symbol, symtab, rel->SymbolTableIndex );
3681 /* Hmm..mysterious looking offset - what's it for? SOF */
3682 printName ( sym->Name, strtab -10 );
3683 debugBelch("'\n" );
3684 }
3685
3686 debugBelch("\n" );
3687 }
3688 debugBelch("\n" );
3689 debugBelch("string table has size 0x%x\n", * (UInt32*)strtab );
3690 debugBelch("---START of string table---\n");
3691 for (i = 4; i < *(Int32*)strtab; i++) {
3692 if (strtab[i] == 0)
3693 debugBelch("\n"); else
3694 debugBelch("%c", strtab[i] );
3695 }
3696 debugBelch("--- END of string table---\n");
3697
3698 debugBelch("\n" );
3699 i = 0;
3700 while (1) {
3701 COFF_symbol* symtab_i;
3702 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
3703 symtab_i = (COFF_symbol*)
3704 myindex ( sizeof_COFF_symbol, symtab, i );
3705 debugBelch(
3706 "symbol %d\n"
3707 " name `",
3708 i
3709 );
3710 printName ( symtab_i->Name, strtab );
3711 debugBelch(
3712 "'\n"
3713 " value 0x%x\n"
3714 " 1+sec# %d\n"
3715 " type 0x%x\n"
3716 " sclass 0x%x\n"
3717 " nAux %d\n",
3718 symtab_i->Value,
3719 (Int32)(symtab_i->SectionNumber),
3720 (UInt32)symtab_i->Type,
3721 (UInt32)symtab_i->StorageClass,
3722 (UInt32)symtab_i->NumberOfAuxSymbols
3723 );
3724 i += symtab_i->NumberOfAuxSymbols;
3725 i++;
3726 }
3727
3728 debugBelch("\n" );
3729 return 1;
3730 }
3731
3732
3733 static int
3734 ocGetNames_PEi386 ( ObjectCode* oc )
3735 {
3736 COFF_header* hdr;
3737 COFF_section* sectab;
3738 COFF_symbol* symtab;
3739 UChar* strtab;
3740
3741 UChar* sname;
3742 void* addr;
3743 int i;
3744
3745 hdr = (COFF_header*)(oc->image);
3746 sectab = (COFF_section*) (
3747 ((UChar*)(oc->image))
3748 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3749 );
3750 symtab = (COFF_symbol*) (
3751 ((UChar*)(oc->image))
3752 + hdr->PointerToSymbolTable
3753 );
3754 strtab = ((UChar*)(oc->image))
3755 + hdr->PointerToSymbolTable
3756 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3757
3758 /* Allocate space for any (local, anonymous) .bss sections. */
3759
3760 for (i = 0; i < hdr->NumberOfSections; i++) {
3761 UInt32 bss_sz;
3762 UChar* zspace;
3763 COFF_section* sectab_i
3764 = (COFF_section*)
3765 myindex ( sizeof_COFF_section, sectab, i );
3766
3767 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3768
3769 if (0 != strcmp(secname, ".bss")) {
3770 stgFree(secname);
3771 continue;
3772 }
3773
3774 stgFree(secname);
3775
3776 /* sof 10/05: the PE spec text isn't too clear regarding what
3777 * the SizeOfRawData field is supposed to hold for object
3778 * file sections containing just uninitialized data -- for executables,
3779 * it is supposed to be zero; unclear what it's supposed to be
3780 * for object files. However, VirtualSize is guaranteed to be
3781 * zero for object files, which definitely suggests that SizeOfRawData
3782 * will be non-zero (where else would the size of this .bss section be
3783 * stored?) Looking at the COFF_section info for incoming object files,
3784 * this certainly appears to be the case.
3785 *
3786 * => I suspect we've been incorrectly handling .bss sections in (relocatable)
3787 * object files up until now. This turned out to bite us with ghc-6.4.1's use
3788 * of gcc-3.4.x, which has started to emit initially-zeroed-out local 'static'
3789 * variable decls into the .bss section. (The specific function in Q which
3790 * triggered this is libraries/base/cbits/dirUtils.c:__hscore_getFolderPath())
3791 */
3792 if (sectab_i->VirtualSize == 0 && sectab_i->SizeOfRawData == 0) continue;
3793 /* This is a non-empty .bss section. Allocate zeroed space for
3794 it, and set its PointerToRawData field such that oc->image +
3795 PointerToRawData == addr_of_zeroed_space. */
3796 bss_sz = sectab_i->VirtualSize;
3797 if ( bss_sz < sectab_i->SizeOfRawData) { bss_sz = sectab_i->SizeOfRawData; }
3798 zspace = stgCallocBytes(1, bss_sz, "ocGetNames_PEi386(anonymous bss)");
3799 sectab_i->PointerToRawData = ((UChar*)zspace) - ((UChar*)(oc->image));
3800 addProddableBlock(oc, zspace, bss_sz);
3801 /* debugBelch("BSS anon section at 0x%x\n", zspace); */
3802 }
3803
3804 /* Copy section information into the ObjectCode. */
3805
3806 for (i = 0; i < hdr->NumberOfSections; i++) {
3807 UChar* start;
3808 UChar* end;
3809 UInt32 sz;
3810
3811 SectionKind kind
3812 = SECTIONKIND_OTHER;
3813 COFF_section* sectab_i
3814 = (COFF_section*)
3815 myindex ( sizeof_COFF_section, sectab, i );
3816
3817 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3818
3819 IF_DEBUG(linker, debugBelch("section name = %s\n", secname ));
3820
3821 # if 0
3822 /* I'm sure this is the Right Way to do it. However, the
3823 alternative of testing the sectab_i->Name field seems to
3824 work ok with Cygwin.
3825
3826 EZY: We should strongly consider using this style, because
3827 it lets us pick up sections that should be added (e.g.
3828 for a while the linker did not work due to missing .eh_frame
3829 in this section.)
3830 */
3831 if (sectab_i->Characteristics & MYIMAGE_SCN_CNT_CODE ||
3832 sectab_i->Characteristics & MYIMAGE_SCN_CNT_INITIALIZED_DATA)
3833 kind = SECTIONKIND_CODE_OR_RODATA;
3834 # endif
3835
3836 if (0==strcmp(".text",(char*)secname) ||
3837 0==strcmp(".text.startup",(char*)secname) ||
3838 0==strcmp(".rdata",(char*)secname)||
3839 0==strcmp(".eh_frame", (char*)secname)||
3840 0==strcmp(".rodata",(char*)secname))
3841 kind = SECTIONKIND_CODE_OR_RODATA;
3842 if (0==strcmp(".data",(char*)secname) ||
3843 0==strcmp(".bss",(char*)secname))
3844 kind = SECTIONKIND_RWDATA;
3845 if (0==strcmp(".ctors", (char*)secname))
3846 kind = SECTIONKIND_INIT_ARRAY;
3847
3848 ASSERT(sectab_i->SizeOfRawData == 0 || sectab_i->VirtualSize == 0);
3849 sz = sectab_i->SizeOfRawData;
3850 if (sz < sectab_i->VirtualSize) sz = sectab_i->VirtualSize;
3851
3852 start = ((UChar*)(oc->image)) + sectab_i->PointerToRawData;
3853 end = start + sz - 1;
3854
3855 if (kind == SECTIONKIND_OTHER
3856 /* Ignore sections called which contain stabs debugging
3857 information. */
3858 && 0 != strcmp(".stab", (char*)secname)
3859 && 0 != strcmp(".stabstr", (char*)secname)
3860 /* Ignore sections called which contain exception information. */
3861 && 0 != strcmp(".pdata", (char*)secname)
3862 && 0 != strcmp(".xdata", (char*)secname)
3863 /* ignore section generated from .ident */
3864 && 0!= strncmp(".debug", (char*)secname, 6)
3865 /* ignore unknown section that appeared in gcc 3.4.5(?) */
3866 && 0!= strcmp(".reloc", (char*)secname)
3867 && 0 != strcmp(".rdata$zzz", (char*)secname)
3868 /* ignore linker directive sections */
3869 && 0 != strcmp(".drectve", (char*)secname)
3870 ) {
3871 errorBelch("Unknown PEi386 section name `%s' (while processing: %" PATH_FMT")", secname, oc->fileName);
3872 stgFree(secname);
3873 return 0;
3874 }
3875
3876 if (kind != SECTIONKIND_OTHER && end >= start) {
3877 if ((((size_t)(start)) % sizeof(void *)) != 0) {
3878 barf("Misaligned section: %p", start);
3879 }
3880
3881 addSection(oc, kind, start, end);
3882 addProddableBlock(oc, start, end - start + 1);
3883 }
3884
3885 stgFree(secname);
3886 }
3887
3888 /* Copy exported symbols into the ObjectCode. */
3889
3890 oc->n_symbols = hdr->NumberOfSymbols;
3891 oc->symbols = stgMallocBytes(oc->n_symbols * sizeof(char*),
3892 "ocGetNames_PEi386(oc->symbols)");
3893 /* Call me paranoid; I don't care. */
3894 for (i = 0; i < oc->n_symbols; i++)
3895 oc->symbols[i] = NULL;
3896
3897 i = 0;
3898 while (1) {
3899 COFF_symbol* symtab_i;
3900 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
3901 symtab_i = (COFF_symbol*)
3902 myindex ( sizeof_COFF_symbol, symtab, i );
3903
3904 addr = NULL;
3905
3906 if (symtab_i->StorageClass == MYIMAGE_SYM_CLASS_EXTERNAL
3907 && symtab_i->SectionNumber != MYIMAGE_SYM_UNDEFINED) {
3908 /* This symbol is global and defined, viz, exported */
3909 /* for MYIMAGE_SYMCLASS_EXTERNAL
3910 && !MYIMAGE_SYM_UNDEFINED,
3911 the address of the symbol is:
3912 address of relevant section + offset in section
3913 */
3914 COFF_section* sectabent
3915 = (COFF_section*) myindex ( sizeof_COFF_section,
3916 sectab,
3917 symtab_i->SectionNumber-1 );
3918 addr = ((UChar*)(oc->image))
3919 + (sectabent->PointerToRawData
3920 + symtab_i->Value);
3921 }
3922 else
3923 if (symtab_i->SectionNumber == MYIMAGE_SYM_UNDEFINED
3924 && symtab_i->Value > 0) {
3925 /* This symbol isn't in any section at all, ie, global bss.
3926 Allocate zeroed space for it. */
3927 addr = stgCallocBytes(1, symtab_i->Value,
3928 "ocGetNames_PEi386(non-anonymous bss)");
3929 addSection(oc, SECTIONKIND_RWDATA, addr,
3930 ((UChar*)addr) + symtab_i->Value - 1);
3931 addProddableBlock(oc, addr, symtab_i->Value);
3932 /* debugBelch("BSS section at 0x%x\n", addr); */
3933 }
3934
3935 if (addr != NULL ) {
3936 sname = cstring_from_COFF_symbol_name ( symtab_i->Name, strtab );
3937 /* debugBelch("addSymbol %p `%s \n", addr,sname); */
3938 IF_DEBUG(linker, debugBelch("addSymbol %p `%s'\n", addr,sname);)
3939 ASSERT(i >= 0 && i < oc->n_symbols);
3940 /* cstring_from_COFF_symbol_name always succeeds. */
3941 oc->symbols[i] = (char*)sname;
3942 ghciInsertStrHashTable(oc->fileName, symhash, (char*)sname, addr);
3943 } else {
3944 # if 0
3945 debugBelch(
3946 "IGNORING symbol %d\n"
3947 " name `",
3948 i
3949 );
3950 printName ( symtab_i->Name, strtab );
3951 debugBelch(
3952 "'\n"
3953 " value 0x%x\n"
3954 " 1+sec# %d\n"
3955 " type 0x%x\n"
3956 " sclass 0x%x\n"
3957 " nAux %d\n",
3958 symtab_i->Value,
3959 (Int32)(symtab_i->SectionNumber),
3960 (UInt32)symtab_i->Type,
3961 (UInt32)symtab_i->StorageClass,
3962 (UInt32)symtab_i->NumberOfAuxSymbols
3963 );
3964 # endif
3965 }
3966
3967 i += symtab_i->NumberOfAuxSymbols;
3968 i++;
3969 }
3970
3971 return 1;
3972 }
3973
3974
3975 static int
3976 ocResolve_PEi386 ( ObjectCode* oc )
3977 {
3978 COFF_header* hdr;
3979 COFF_section* sectab;
3980 COFF_symbol* symtab;
3981 UChar* strtab;
3982
3983 UInt32 A;
3984 size_t S;
3985 void * pP;
3986
3987 int i;
3988 UInt32 j, noRelocs;
3989
3990 /* ToDo: should be variable-sized? But is at least safe in the
3991 sense of buffer-overrun-proof. */
3992 UChar symbol[1000];
3993 /* debugBelch("resolving for %s\n", oc->fileName); */
3994
3995 hdr = (COFF_header*)(oc->image);
3996 sectab = (COFF_section*) (
3997 ((UChar*)(oc->image))
3998 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3999 );
4000 symtab = (COFF_symbol*) (
4001 ((UChar*)(oc->image))
4002 + hdr->PointerToSymbolTable
4003 );
4004 strtab = ((UChar*)(oc->image))
4005 + hdr->PointerToSymbolTable
4006 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
4007
4008 for (i = 0; i < hdr->NumberOfSections; i++) {
4009 COFF_section* sectab_i
4010 = (COFF_section*)
4011 myindex ( sizeof_COFF_section, sectab, i );
4012 COFF_reloc* reltab
4013 = (COFF_reloc*) (
4014 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
4015 );
4016
4017 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
4018
4019 /* Ignore sections called which contain stabs debugging
4020 information. */
4021 if (0 == strcmp(