linker: Fix indirect calls for x86_64 windows (#2283)
[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 "Proftimer.h"
31 #include "GetEnv.h"
32 #include "Stable.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 typedef struct _RtsSymbolInfo {
142 void *value;
143 const ObjectCode *owner;
144 HsBool weak;
145 } RtsSymbolInfo;
146
147 /* Hash table mapping symbol names to RtsSymbolInfo */
148 static /*Str*/HashTable *symhash;
149
150 /* List of currently loaded objects */
151 ObjectCode *objects = NULL; /* initially empty */
152
153 /* List of objects that have been unloaded via unloadObj(), but are waiting
154 to be actually freed via checkUnload() */
155 ObjectCode *unloaded_objects = NULL; /* initially empty */
156
157 /* Type of the initializer */
158 typedef void (*init_t) (int argc, char **argv, char **env);
159
160 static HsInt loadOc( ObjectCode* oc );
161 static ObjectCode* mkOc( pathchar *path, char *image, int imageSize,
162 char *archiveMemberName
163 #ifndef USE_MMAP
164 #ifdef darwin_HOST_OS
165 , int misalignment
166 #endif
167 #endif
168 );
169
170 // Use wchar_t for pathnames on Windows (#5697)
171 #if defined(mingw32_HOST_OS)
172 #define pathcmp wcscmp
173 #define pathlen wcslen
174 #define pathopen _wfopen
175 #define pathstat _wstat
176 #define struct_stat struct _stat
177 #define open wopen
178 #define WSTR(s) L##s
179 #else
180 #define pathcmp strcmp
181 #define pathlen strlen
182 #define pathopen fopen
183 #define pathstat stat
184 #define struct_stat struct stat
185 #define WSTR(s) s
186 #endif
187
188 static pathchar* pathdup(pathchar *path)
189 {
190 pathchar *ret;
191 #if defined(mingw32_HOST_OS)
192 ret = wcsdup(path);
193 #else
194 /* sigh, strdup() isn't a POSIX function, so do it the long way */
195 ret = stgMallocBytes( strlen(path)+1, "loadObj" );
196 strcpy(ret, path);
197 #endif
198 return ret;
199 }
200
201
202 #if defined(OBJFORMAT_ELF)
203 static int ocVerifyImage_ELF ( ObjectCode* oc );
204 static int ocGetNames_ELF ( ObjectCode* oc );
205 static int ocResolve_ELF ( ObjectCode* oc );
206 static int ocRunInit_ELF ( ObjectCode* oc );
207 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
208 static int ocAllocateSymbolExtras_ELF ( ObjectCode* oc );
209 #endif
210 #elif defined(OBJFORMAT_PEi386)
211 static int ocVerifyImage_PEi386 ( ObjectCode* oc );
212 static int ocGetNames_PEi386 ( ObjectCode* oc );
213 static int ocResolve_PEi386 ( ObjectCode* oc );
214 static int ocRunInit_PEi386 ( ObjectCode* oc );
215 static void *lookupSymbolInDLLs ( unsigned char *lbl );
216 static void zapTrailingAtSign ( unsigned char *sym );
217 static char *allocateImageAndTrampolines (
218 #if defined(x86_64_HOST_ARCH)
219 FILE* f, pathchar* arch_name, char* member_name,
220 #endif
221 int size );
222 #if defined(x86_64_HOST_ARCH)
223 static int ocAllocateSymbolExtras_PEi386 ( ObjectCode* oc );
224 static size_t makeSymbolExtra_PEi386( ObjectCode* oc, size_t, char* symbol );
225 #define PEi386_IMAGE_OFFSET 4
226 #else
227 #define PEi386_IMAGE_OFFSET 0
228 #endif
229 #elif defined(OBJFORMAT_MACHO)
230 static int ocVerifyImage_MachO ( ObjectCode* oc );
231 static int ocGetNames_MachO ( ObjectCode* oc );
232 static int ocResolve_MachO ( ObjectCode* oc );
233 static int ocRunInit_MachO ( ObjectCode* oc );
234
235 #ifndef USE_MMAP
236 static int machoGetMisalignment( FILE * );
237 #endif
238 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
239 static int ocAllocateSymbolExtras_MachO ( ObjectCode* oc );
240 #endif
241 #ifdef powerpc_HOST_ARCH
242 static void machoInitSymbolsWithoutUnderscore( void );
243 #endif
244 #endif
245
246 static void freeProddableBlocks (ObjectCode *oc);
247
248 /* on x86_64 we have a problem with relocating symbol references in
249 * code that was compiled without -fPIC. By default, the small memory
250 * model is used, which assumes that symbol references can fit in a
251 * 32-bit slot. The system dynamic linker makes this work for
252 * references to shared libraries by either (a) allocating a jump
253 * table slot for code references, or (b) moving the symbol at load
254 * time (and copying its contents, if necessary) for data references.
255 *
256 * We unfortunately can't tell whether symbol references are to code
257 * or data. So for now we assume they are code (the vast majority
258 * are), and allocate jump-table slots. Unfortunately this will
259 * SILENTLY generate crashing code for data references. This hack is
260 * enabled by X86_64_ELF_NONPIC_HACK.
261 *
262 * One workaround is to use shared Haskell libraries. This is
263 * coming. Another workaround is to keep the static libraries but
264 * compile them with -fPIC, because that will generate PIC references
265 * to data which can be relocated. The PIC code is still too green to
266 * do this systematically, though.
267 *
268 * See bug #781
269 * See thread http://www.haskell.org/pipermail/cvs-ghc/2007-September/038458.html
270 *
271 * Naming Scheme for Symbol Macros
272 *
273 * SymI_*: symbol is internal to the RTS. It resides in an object
274 * file/library that is statically.
275 * SymE_*: symbol is external to the RTS library. It might be linked
276 * dynamically.
277 *
278 * Sym*_HasProto : the symbol prototype is imported in an include file
279 * or defined explicitly
280 * Sym*_NeedsProto: the symbol is undefined and we add a dummy
281 * default proto extern void sym(void);
282 */
283 #define X86_64_ELF_NONPIC_HACK 1
284
285 /* Link objects into the lower 2Gb on x86_64. GHC assumes the
286 * small memory model on this architecture (see gcc docs,
287 * -mcmodel=small).
288 *
289 * MAP_32BIT not available on OpenBSD/amd64
290 */
291 #if defined(x86_64_HOST_ARCH) && defined(MAP_32BIT)
292 #define TRY_MAP_32BIT MAP_32BIT
293 #else
294 #define TRY_MAP_32BIT 0
295 #endif
296
297 /*
298 * Due to the small memory model (see above), on x86_64 we have to map
299 * all our non-PIC object files into the low 2Gb of the address space
300 * (why 2Gb and not 4Gb? Because all addresses must be reachable
301 * using a 32-bit signed PC-relative offset). On Linux we can do this
302 * using the MAP_32BIT flag to mmap(), however on other OSs
303 * (e.g. *BSD, see #2063, and also on Linux inside Xen, see #2512), we
304 * can't do this. So on these systems, we have to pick a base address
305 * in the low 2Gb of the address space and try to allocate memory from
306 * there.
307 *
308 * We pick a default address based on the OS, but also make this
309 * configurable via an RTS flag (+RTS -xm)
310 */
311 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
312
313 #if defined(MAP_32BIT)
314 // Try to use MAP_32BIT
315 #define MMAP_32BIT_BASE_DEFAULT 0
316 #else
317 // A guess: 1Gb.
318 #define MMAP_32BIT_BASE_DEFAULT 0x40000000
319 #endif
320
321 static void *mmap_32bit_base = (void *)MMAP_32BIT_BASE_DEFAULT;
322 #endif
323
324 /* MAP_ANONYMOUS is MAP_ANON on some systems, e.g. OpenBSD */
325 #if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
326 #define MAP_ANONYMOUS MAP_ANON
327 #endif
328
329 /* -----------------------------------------------------------------------------
330 * Built-in symbols from the RTS
331 */
332
333 typedef struct _RtsSymbolVal {
334 char *lbl;
335 void *addr;
336 } RtsSymbolVal;
337
338 #define Maybe_Stable_Names SymI_HasProto(stg_mkWeakzh) \
339 SymI_HasProto(stg_mkWeakNoFinalizzerzh) \
340 SymI_HasProto(stg_addCFinalizzerToWeakzh) \
341 SymI_HasProto(stg_makeStableNamezh) \
342 SymI_HasProto(stg_finalizzeWeakzh)
343
344 #if !defined (mingw32_HOST_OS)
345 #define RTS_POSIX_ONLY_SYMBOLS \
346 SymI_HasProto(__hscore_get_saved_termios) \
347 SymI_HasProto(__hscore_set_saved_termios) \
348 SymI_HasProto(shutdownHaskellAndSignal) \
349 SymI_HasProto(signal_handlers) \
350 SymI_HasProto(stg_sig_install) \
351 SymI_HasProto(rtsTimerSignal) \
352 SymI_HasProto(atexit) \
353 SymI_NeedsProto(nocldstop)
354 #endif
355
356 #if defined (cygwin32_HOST_OS)
357 #define RTS_MINGW_ONLY_SYMBOLS /**/
358 /* Don't have the ability to read import libs / archives, so
359 * we have to stupidly list a lot of what libcygwin.a
360 * exports; sigh.
361 */
362 #define RTS_CYGWIN_ONLY_SYMBOLS \
363 SymI_HasProto(regfree) \
364 SymI_HasProto(regexec) \
365 SymI_HasProto(regerror) \
366 SymI_HasProto(regcomp) \
367 SymI_HasProto(__errno) \
368 SymI_HasProto(access) \
369 SymI_HasProto(chmod) \
370 SymI_HasProto(chdir) \
371 SymI_HasProto(close) \
372 SymI_HasProto(creat) \
373 SymI_HasProto(dup) \
374 SymI_HasProto(dup2) \
375 SymI_HasProto(fstat) \
376 SymI_HasProto(fcntl) \
377 SymI_HasProto(getcwd) \
378 SymI_HasProto(getenv) \
379 SymI_HasProto(lseek) \
380 SymI_HasProto(open) \
381 SymI_HasProto(fpathconf) \
382 SymI_HasProto(pathconf) \
383 SymI_HasProto(stat) \
384 SymI_HasProto(pow) \
385 SymI_HasProto(tanh) \
386 SymI_HasProto(cosh) \
387 SymI_HasProto(sinh) \
388 SymI_HasProto(atan) \
389 SymI_HasProto(acos) \
390 SymI_HasProto(asin) \
391 SymI_HasProto(tan) \
392 SymI_HasProto(cos) \
393 SymI_HasProto(sin) \
394 SymI_HasProto(exp) \
395 SymI_HasProto(log) \
396 SymI_HasProto(sqrt) \
397 SymI_HasProto(localtime_r) \
398 SymI_HasProto(gmtime_r) \
399 SymI_HasProto(mktime) \
400 SymI_NeedsProto(_imp___tzname) \
401 SymI_HasProto(gettimeofday) \
402 SymI_HasProto(timezone) \
403 SymI_HasProto(tcgetattr) \
404 SymI_HasProto(tcsetattr) \
405 SymI_HasProto(memcpy) \
406 SymI_HasProto(memmove) \
407 SymI_HasProto(realloc) \
408 SymI_HasProto(malloc) \
409 SymI_HasProto(free) \
410 SymI_HasProto(fork) \
411 SymI_HasProto(lstat) \
412 SymI_HasProto(isatty) \
413 SymI_HasProto(mkdir) \
414 SymI_HasProto(opendir) \
415 SymI_HasProto(readdir) \
416 SymI_HasProto(rewinddir) \
417 SymI_HasProto(closedir) \
418 SymI_HasProto(link) \
419 SymI_HasProto(mkfifo) \
420 SymI_HasProto(pipe) \
421 SymI_HasProto(read) \
422 SymI_HasProto(rename) \
423 SymI_HasProto(rmdir) \
424 SymI_HasProto(select) \
425 SymI_HasProto(system) \
426 SymI_HasProto(write) \
427 SymI_HasProto(strcmp) \
428 SymI_HasProto(strcpy) \
429 SymI_HasProto(strncpy) \
430 SymI_HasProto(strerror) \
431 SymI_HasProto(sigaddset) \
432 SymI_HasProto(sigemptyset) \
433 SymI_HasProto(sigprocmask) \
434 SymI_HasProto(umask) \
435 SymI_HasProto(uname) \
436 SymI_HasProto(unlink) \
437 SymI_HasProto(utime) \
438 SymI_HasProto(waitpid)
439
440 #elif defined(mingw32_HOST_OS)
441 #define RTS_POSIX_ONLY_SYMBOLS /**/
442 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
443
444 #if HAVE_GETTIMEOFDAY
445 #define RTS_MINGW_GETTIMEOFDAY_SYM SymI_NeedsProto(gettimeofday)
446 #else
447 #define RTS_MINGW_GETTIMEOFDAY_SYM /**/
448 #endif
449
450 #if HAVE___MINGW_VFPRINTF
451 #define RTS___MINGW_VFPRINTF_SYM SymI_HasProto(__mingw_vfprintf)
452 #else
453 #define RTS___MINGW_VFPRINTF_SYM /**/
454 #endif
455
456 #if defined(i386_HOST_ARCH)
457 #define RTS_WIN32_ONLY(X) X
458 #else
459 #define RTS_WIN32_ONLY(X) /**/
460 #endif
461
462 #if defined(x86_64_HOST_ARCH)
463 #define RTS_WIN64_ONLY(X) X
464 #else
465 #define RTS_WIN64_ONLY(X) /**/
466 #endif
467
468 /* These are statically linked from the mingw libraries into the ghc
469 executable, so we have to employ this hack. */
470 #define RTS_MINGW_ONLY_SYMBOLS \
471 SymI_HasProto(stg_asyncReadzh) \
472 SymI_HasProto(stg_asyncWritezh) \
473 SymI_HasProto(stg_asyncDoProczh) \
474 SymI_HasProto(getWin32ProgArgv) \
475 SymI_HasProto(setWin32ProgArgv) \
476 SymI_HasProto(memset) \
477 SymI_HasProto(inet_ntoa) \
478 SymI_HasProto(inet_addr) \
479 SymI_HasProto(htonl) \
480 SymI_HasProto(recvfrom) \
481 SymI_HasProto(listen) \
482 SymI_HasProto(bind) \
483 SymI_HasProto(shutdown) \
484 SymI_HasProto(connect) \
485 SymI_HasProto(htons) \
486 SymI_HasProto(ntohs) \
487 SymI_HasProto(getservbyname) \
488 SymI_HasProto(getservbyport) \
489 SymI_HasProto(getprotobynumber) \
490 SymI_HasProto(getprotobyname) \
491 SymI_HasProto(gethostbyname) \
492 SymI_HasProto(gethostbyaddr) \
493 SymI_HasProto(gethostname) \
494 SymI_HasProto(strcpy) \
495 SymI_HasProto(strncpy) \
496 SymI_HasProto(abort) \
497 RTS_WIN32_ONLY(SymI_NeedsProto(_alloca)) \
498 SymI_HasProto(isxdigit) \
499 SymI_HasProto(isupper) \
500 SymI_HasProto(ispunct) \
501 SymI_HasProto(islower) \
502 SymI_HasProto(isspace) \
503 SymI_HasProto(isprint) \
504 SymI_HasProto(isdigit) \
505 SymI_HasProto(iscntrl) \
506 SymI_HasProto(isalpha) \
507 SymI_HasProto(isalnum) \
508 SymI_HasProto(isascii) \
509 RTS___MINGW_VFPRINTF_SYM \
510 SymI_HasProto(strcmp) \
511 SymI_HasProto(memmove) \
512 SymI_HasProto(realloc) \
513 SymI_HasProto(malloc) \
514 SymI_HasProto(pow) \
515 SymI_HasProto(tanh) \
516 SymI_HasProto(cosh) \
517 SymI_HasProto(sinh) \
518 SymI_HasProto(atan) \
519 SymI_HasProto(acos) \
520 SymI_HasProto(asin) \
521 SymI_HasProto(tan) \
522 SymI_HasProto(cos) \
523 SymI_HasProto(sin) \
524 SymI_HasProto(exp) \
525 SymI_HasProto(log) \
526 SymI_HasProto(sqrt) \
527 SymI_HasProto(powf) \
528 SymI_HasProto(tanhf) \
529 SymI_HasProto(coshf) \
530 SymI_HasProto(sinhf) \
531 SymI_HasProto(atanf) \
532 SymI_HasProto(acosf) \
533 SymI_HasProto(asinf) \
534 SymI_HasProto(tanf) \
535 SymI_HasProto(cosf) \
536 SymI_HasProto(sinf) \
537 SymI_HasProto(expf) \
538 SymI_HasProto(logf) \
539 SymI_HasProto(sqrtf) \
540 SymI_HasProto(erf) \
541 SymI_HasProto(erfc) \
542 SymI_HasProto(erff) \
543 SymI_HasProto(erfcf) \
544 SymI_HasProto(memcpy) \
545 SymI_HasProto(rts_InstallConsoleEvent) \
546 SymI_HasProto(rts_ConsoleHandlerDone) \
547 SymI_NeedsProto(mktime) \
548 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___timezone)) \
549 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___tzname)) \
550 RTS_WIN32_ONLY(SymI_NeedsProto(_imp__tzname)) \
551 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___iob)) \
552 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___osver)) \
553 SymI_NeedsProto(localtime) \
554 SymI_NeedsProto(gmtime) \
555 SymI_NeedsProto(opendir) \
556 SymI_NeedsProto(readdir) \
557 SymI_NeedsProto(rewinddir) \
558 RTS_WIN32_ONLY(SymI_NeedsProto(_imp____mb_cur_max)) \
559 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___pctype)) \
560 RTS_WIN32_ONLY(SymI_NeedsProto(__chkstk)) \
561 RTS_WIN64_ONLY(SymI_NeedsProto(__imp___iob_func)) \
562 RTS_WIN64_ONLY(SymI_NeedsProto(___chkstk_ms)) \
563 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_localeconv)) \
564 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_islower)) \
565 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isspace)) \
566 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isxdigit)) \
567 RTS_WIN64_ONLY(SymI_HasProto(close)) \
568 RTS_WIN64_ONLY(SymI_HasProto(read)) \
569 RTS_WIN64_ONLY(SymI_HasProto(dup)) \
570 RTS_WIN64_ONLY(SymI_HasProto(dup2)) \
571 RTS_WIN64_ONLY(SymI_HasProto(write)) \
572 SymI_NeedsProto(getpid) \
573 RTS_WIN64_ONLY(SymI_HasProto(access)) \
574 SymI_HasProto(chmod) \
575 RTS_WIN64_ONLY(SymI_HasProto(creat)) \
576 RTS_WIN64_ONLY(SymI_HasProto(umask)) \
577 SymI_HasProto(unlink) \
578 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__errno)) \
579 RTS_WIN64_ONLY(SymI_NeedsProto(ftruncate64)) \
580 RTS_WIN64_ONLY(SymI_HasProto(setmode)) \
581 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wstat64)) \
582 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__fstat64)) \
583 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wsopen)) \
584 RTS_WIN64_ONLY(SymI_HasProto(__imp__environ)) \
585 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileAttributesA)) \
586 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileInformationByHandle)) \
587 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileType)) \
588 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetLastError)) \
589 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceFrequency)) \
590 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceCounter)) \
591 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetTickCount)) \
592 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WaitForSingleObject)) \
593 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekConsoleInputA)) \
594 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ReadConsoleInputA)) \
595 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekNamedPipe)) \
596 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__isatty)) \
597 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_select)) \
598 RTS_WIN64_ONLY(SymI_HasProto(isatty)) \
599 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__get_osfhandle)) \
600 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetConsoleMode)) \
601 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetConsoleMode)) \
602 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FlushConsoleInputBuffer)) \
603 RTS_WIN64_ONLY(SymI_HasProto(free)) \
604 RTS_WIN64_ONLY(SymI_NeedsProto(raise)) \
605 RTS_WIN64_ONLY(SymI_NeedsProto(_getpid)) \
606 RTS_WIN64_ONLY(SymI_HasProto(getc)) \
607 RTS_WIN64_ONLY(SymI_HasProto(ungetc)) \
608 RTS_WIN64_ONLY(SymI_HasProto(puts)) \
609 RTS_WIN64_ONLY(SymI_HasProto(putc)) \
610 RTS_WIN64_ONLY(SymI_HasProto(putchar)) \
611 RTS_WIN64_ONLY(SymI_HasProto(fputc)) \
612 RTS_WIN64_ONLY(SymI_HasProto(fread)) \
613 RTS_WIN64_ONLY(SymI_HasProto(fwrite)) \
614 RTS_WIN64_ONLY(SymI_HasProto(ferror)) \
615 RTS_WIN64_ONLY(SymI_HasProto(printf)) \
616 RTS_WIN64_ONLY(SymI_HasProto(fprintf)) \
617 RTS_WIN64_ONLY(SymI_HasProto(sprintf)) \
618 RTS_WIN64_ONLY(SymI_HasProto(vsprintf)) \
619 RTS_WIN64_ONLY(SymI_HasProto(sscanf)) \
620 RTS_WIN64_ONLY(SymI_HasProto(ldexp)) \
621 RTS_WIN64_ONLY(SymI_HasProto(strlen)) \
622 RTS_WIN64_ONLY(SymI_HasProto(strnlen)) \
623 RTS_WIN64_ONLY(SymI_HasProto(strchr)) \
624 RTS_WIN64_ONLY(SymI_HasProto(strtol)) \
625 RTS_WIN64_ONLY(SymI_HasProto(strerror)) \
626 RTS_WIN64_ONLY(SymI_HasProto(memchr)) \
627 RTS_WIN64_ONLY(SymI_HasProto(memcmp)) \
628 RTS_WIN64_ONLY(SymI_HasProto(wcscpy)) \
629 RTS_WIN64_ONLY(SymI_HasProto(wcslen)) \
630 RTS_WIN64_ONLY(SymI_HasProto(_lseeki64)) \
631 RTS_WIN64_ONLY(SymI_HasProto(_wchmod)) \
632 RTS_WIN64_ONLY(SymI_HasProto(closesocket)) \
633 RTS_WIN64_ONLY(SymI_HasProto(send)) \
634 RTS_WIN64_ONLY(SymI_HasProto(recv)) \
635 RTS_WIN64_ONLY(SymI_HasProto(bsearch)) \
636 RTS_WIN64_ONLY(SymI_HasProto(CommandLineToArgvW)) \
637 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmap)) \
638 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmapIndirect)) \
639 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleBitmap)) \
640 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBPatternBrushPt)) \
641 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBitmap)) \
642 RTS_WIN64_ONLY(SymI_HasProto(SetBitmapDimensionEx)) \
643 RTS_WIN64_ONLY(SymI_HasProto(GetBitmapDimensionEx)) \
644 RTS_WIN64_ONLY(SymI_HasProto(GetStockObject)) \
645 RTS_WIN64_ONLY(SymI_HasProto(GetObjectW)) \
646 RTS_WIN64_ONLY(SymI_HasProto(DeleteObject)) \
647 RTS_WIN64_ONLY(SymI_HasProto(SetDIBits)) \
648 RTS_WIN64_ONLY(SymI_HasProto(GetDIBits)) \
649 RTS_WIN64_ONLY(SymI_HasProto(CreateSolidBrush)) \
650 RTS_WIN64_ONLY(SymI_HasProto(CreateHatchBrush)) \
651 RTS_WIN64_ONLY(SymI_HasProto(CreatePatternBrush)) \
652 RTS_WIN64_ONLY(SymI_HasProto(CreateFontW)) \
653 RTS_WIN64_ONLY(SymI_HasProto(AngleArc)) \
654 RTS_WIN64_ONLY(SymI_HasProto(Arc)) \
655 RTS_WIN64_ONLY(SymI_HasProto(ArcTo)) \
656 RTS_WIN64_ONLY(SymI_HasProto(BeginPath)) \
657 RTS_WIN64_ONLY(SymI_HasProto(BitBlt)) \
658 RTS_WIN64_ONLY(SymI_HasProto(CancelDC)) \
659 RTS_WIN64_ONLY(SymI_HasProto(Chord)) \
660 RTS_WIN64_ONLY(SymI_HasProto(CloseFigure)) \
661 RTS_WIN64_ONLY(SymI_HasProto(CombineRgn)) \
662 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleDC)) \
663 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgn)) \
664 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgnIndirect)) \
665 RTS_WIN64_ONLY(SymI_HasProto(CreatePen)) \
666 RTS_WIN64_ONLY(SymI_HasProto(CreatePolygonRgn)) \
667 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgn)) \
668 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgnIndirect)) \
669 RTS_WIN64_ONLY(SymI_HasProto(CreateRoundRectRgn)) \
670 RTS_WIN64_ONLY(SymI_HasProto(DeleteDC)) \
671 RTS_WIN64_ONLY(SymI_HasProto(Ellipse)) \
672 RTS_WIN64_ONLY(SymI_HasProto(EndPath)) \
673 RTS_WIN64_ONLY(SymI_HasProto(EqualRgn)) \
674 RTS_WIN64_ONLY(SymI_HasProto(ExtSelectClipRgn)) \
675 RTS_WIN64_ONLY(SymI_HasProto(FillPath)) \
676 RTS_WIN64_ONLY(SymI_HasProto(FillRgn)) \
677 RTS_WIN64_ONLY(SymI_HasProto(FlattenPath)) \
678 RTS_WIN64_ONLY(SymI_HasProto(FrameRgn)) \
679 RTS_WIN64_ONLY(SymI_HasProto(GetArcDirection)) \
680 RTS_WIN64_ONLY(SymI_HasProto(GetBkColor)) \
681 RTS_WIN64_ONLY(SymI_HasProto(GetBkMode)) \
682 RTS_WIN64_ONLY(SymI_HasProto(GetBrushOrgEx)) \
683 RTS_WIN64_ONLY(SymI_HasProto(GetCurrentObject)) \
684 RTS_WIN64_ONLY(SymI_HasProto(GetDCOrgEx)) \
685 RTS_WIN64_ONLY(SymI_HasProto(GetGraphicsMode)) \
686 RTS_WIN64_ONLY(SymI_HasProto(GetMiterLimit)) \
687 RTS_WIN64_ONLY(SymI_HasProto(GetPolyFillMode)) \
688 RTS_WIN64_ONLY(SymI_HasProto(GetRgnBox)) \
689 RTS_WIN64_ONLY(SymI_HasProto(GetStretchBltMode)) \
690 RTS_WIN64_ONLY(SymI_HasProto(GetTextAlign)) \
691 RTS_WIN64_ONLY(SymI_HasProto(GetTextCharacterExtra)) \
692 RTS_WIN64_ONLY(SymI_HasProto(GetTextColor)) \
693 RTS_WIN64_ONLY(SymI_HasProto(GetTextExtentPoint32W)) \
694 RTS_WIN64_ONLY(SymI_HasProto(InvertRgn)) \
695 RTS_WIN64_ONLY(SymI_HasProto(LineTo)) \
696 RTS_WIN64_ONLY(SymI_HasProto(MaskBlt)) \
697 RTS_WIN64_ONLY(SymI_HasProto(MoveToEx)) \
698 RTS_WIN64_ONLY(SymI_HasProto(OffsetRgn)) \
699 RTS_WIN64_ONLY(SymI_HasProto(PaintRgn)) \
700 RTS_WIN64_ONLY(SymI_HasProto(PathToRegion)) \
701 RTS_WIN64_ONLY(SymI_HasProto(Pie)) \
702 RTS_WIN64_ONLY(SymI_HasProto(PlgBlt)) \
703 RTS_WIN64_ONLY(SymI_HasProto(PolyBezier)) \
704 RTS_WIN64_ONLY(SymI_HasProto(PolyBezierTo)) \
705 RTS_WIN64_ONLY(SymI_HasProto(Polygon)) \
706 RTS_WIN64_ONLY(SymI_HasProto(Polyline)) \
707 RTS_WIN64_ONLY(SymI_HasProto(PolylineTo)) \
708 RTS_WIN64_ONLY(SymI_HasProto(PtInRegion)) \
709 RTS_WIN64_ONLY(SymI_HasProto(Rectangle)) \
710 RTS_WIN64_ONLY(SymI_HasProto(RectInRegion)) \
711 RTS_WIN64_ONLY(SymI_HasProto(RestoreDC)) \
712 RTS_WIN64_ONLY(SymI_HasProto(RoundRect)) \
713 RTS_WIN64_ONLY(SymI_HasProto(SaveDC)) \
714 RTS_WIN64_ONLY(SymI_HasProto(SelectClipPath)) \
715 RTS_WIN64_ONLY(SymI_HasProto(SelectClipRgn)) \
716 RTS_WIN64_ONLY(SymI_HasProto(SelectObject)) \
717 RTS_WIN64_ONLY(SymI_HasProto(SelectPalette)) \
718 RTS_WIN64_ONLY(SymI_HasProto(SetArcDirection)) \
719 RTS_WIN64_ONLY(SymI_HasProto(SetBkColor)) \
720 RTS_WIN64_ONLY(SymI_HasProto(SetBkMode)) \
721 RTS_WIN64_ONLY(SymI_HasProto(SetBrushOrgEx)) \
722 RTS_WIN64_ONLY(SymI_HasProto(SetGraphicsMode)) \
723 RTS_WIN64_ONLY(SymI_HasProto(SetMiterLimit)) \
724 RTS_WIN64_ONLY(SymI_HasProto(SetPolyFillMode)) \
725 RTS_WIN64_ONLY(SymI_HasProto(SetStretchBltMode)) \
726 RTS_WIN64_ONLY(SymI_HasProto(SetTextAlign)) \
727 RTS_WIN64_ONLY(SymI_HasProto(SetTextCharacterExtra)) \
728 RTS_WIN64_ONLY(SymI_HasProto(SetTextColor)) \
729 RTS_WIN64_ONLY(SymI_HasProto(StretchBlt)) \
730 RTS_WIN64_ONLY(SymI_HasProto(StrokeAndFillPath)) \
731 RTS_WIN64_ONLY(SymI_HasProto(StrokePath)) \
732 RTS_WIN64_ONLY(SymI_HasProto(TextOutW)) \
733 RTS_WIN64_ONLY(SymI_HasProto(timeGetTime)) \
734 RTS_WIN64_ONLY(SymI_HasProto(WidenPath)) \
735 RTS_WIN64_ONLY(SymI_HasProto(GetFileSecurityW)) \
736 RTS_WIN64_ONLY(SymI_HasProto(RegCloseKey)) \
737 RTS_WIN64_ONLY(SymI_HasProto(RegConnectRegistryW)) \
738 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyExW)) \
739 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyW)) \
740 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteKeyW)) \
741 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteValueW)) \
742 RTS_WIN64_ONLY(SymI_HasProto(RegEnumKeyW)) \
743 RTS_WIN64_ONLY(SymI_HasProto(RegEnumValueW)) \
744 RTS_WIN64_ONLY(SymI_HasProto(RegFlushKey)) \
745 RTS_WIN64_ONLY(SymI_HasProto(RegLoadKeyW)) \
746 RTS_WIN64_ONLY(SymI_HasProto(RegNotifyChangeKeyValue)) \
747 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyExW)) \
748 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyW)) \
749 RTS_WIN64_ONLY(SymI_HasProto(RegQueryInfoKeyW)) \
750 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueExW)) \
751 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueW)) \
752 RTS_WIN64_ONLY(SymI_HasProto(RegReplaceKeyW)) \
753 RTS_WIN64_ONLY(SymI_HasProto(RegRestoreKeyW)) \
754 RTS_WIN64_ONLY(SymI_HasProto(RegSaveKeyW)) \
755 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueExW)) \
756 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueW)) \
757 RTS_WIN64_ONLY(SymI_HasProto(RegUnLoadKeyW)) \
758 RTS_WIN64_ONLY(SymI_NeedsProto(SHGetFolderPathW)) \
759 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetWindowLongPtrW)) \
760 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetWindowLongPtrW)) \
761 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_MenuItemFromPoint)) \
762 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPoint)) \
763 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPointEx)) \
764 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DeleteObject)) \
765 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_UnmapViewOfFile)) \
766 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CloseHandle)) \
767 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FreeLibrary)) \
768 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetMessageW)) \
769 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TranslateMessage)) \
770 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DispatchMessageW)) \
771 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DefWindowProcW)) \
772 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetDIBits)) \
773 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalAlloc)) \
774 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalFree)) \
775 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateFileW)) \
776 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WriteFile)) \
777 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateCompatibleBitmap)) \
778 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SelectObject)) \
779 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_Polygon)) \
780 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FormatMessageW)) \
781 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__localtime64)) \
782 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__tzname)) \
783 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__timezone)) \
784 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreatePipe)) \
785 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetHandleInformation)) \
786 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetStdHandle)) \
787 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetCurrentProcess)) \
788 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DuplicateHandle)) \
789 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateProcessW)) \
790 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TerminateProcess)) \
791 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__open_osfhandle)) \
792 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetExitCodeProcess)) \
793 RTS_MINGW_GETTIMEOFDAY_SYM \
794 SymI_NeedsProto(closedir)
795
796 #else
797 #define RTS_MINGW_ONLY_SYMBOLS /**/
798 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
799 #endif
800
801
802 #if defined(darwin_HOST_OS) && HAVE_PRINTF_LDBLSTUB
803 #define RTS_DARWIN_ONLY_SYMBOLS \
804 SymI_NeedsProto(asprintf$LDBLStub) \
805 SymI_NeedsProto(err$LDBLStub) \
806 SymI_NeedsProto(errc$LDBLStub) \
807 SymI_NeedsProto(errx$LDBLStub) \
808 SymI_NeedsProto(fprintf$LDBLStub) \
809 SymI_NeedsProto(fscanf$LDBLStub) \
810 SymI_NeedsProto(fwprintf$LDBLStub) \
811 SymI_NeedsProto(fwscanf$LDBLStub) \
812 SymI_NeedsProto(printf$LDBLStub) \
813 SymI_NeedsProto(scanf$LDBLStub) \
814 SymI_NeedsProto(snprintf$LDBLStub) \
815 SymI_NeedsProto(sprintf$LDBLStub) \
816 SymI_NeedsProto(sscanf$LDBLStub) \
817 SymI_NeedsProto(strtold$LDBLStub) \
818 SymI_NeedsProto(swprintf$LDBLStub) \
819 SymI_NeedsProto(swscanf$LDBLStub) \
820 SymI_NeedsProto(syslog$LDBLStub) \
821 SymI_NeedsProto(vasprintf$LDBLStub) \
822 SymI_NeedsProto(verr$LDBLStub) \
823 SymI_NeedsProto(verrc$LDBLStub) \
824 SymI_NeedsProto(verrx$LDBLStub) \
825 SymI_NeedsProto(vfprintf$LDBLStub) \
826 SymI_NeedsProto(vfscanf$LDBLStub) \
827 SymI_NeedsProto(vfwprintf$LDBLStub) \
828 SymI_NeedsProto(vfwscanf$LDBLStub) \
829 SymI_NeedsProto(vprintf$LDBLStub) \
830 SymI_NeedsProto(vscanf$LDBLStub) \
831 SymI_NeedsProto(vsnprintf$LDBLStub) \
832 SymI_NeedsProto(vsprintf$LDBLStub) \
833 SymI_NeedsProto(vsscanf$LDBLStub) \
834 SymI_NeedsProto(vswprintf$LDBLStub) \
835 SymI_NeedsProto(vswscanf$LDBLStub) \
836 SymI_NeedsProto(vsyslog$LDBLStub) \
837 SymI_NeedsProto(vwarn$LDBLStub) \
838 SymI_NeedsProto(vwarnc$LDBLStub) \
839 SymI_NeedsProto(vwarnx$LDBLStub) \
840 SymI_NeedsProto(vwprintf$LDBLStub) \
841 SymI_NeedsProto(vwscanf$LDBLStub) \
842 SymI_NeedsProto(warn$LDBLStub) \
843 SymI_NeedsProto(warnc$LDBLStub) \
844 SymI_NeedsProto(warnx$LDBLStub) \
845 SymI_NeedsProto(wcstold$LDBLStub) \
846 SymI_NeedsProto(wprintf$LDBLStub) \
847 SymI_NeedsProto(wscanf$LDBLStub)
848 #else
849 #define RTS_DARWIN_ONLY_SYMBOLS
850 #endif
851
852 #ifndef SMP
853 # define MAIN_CAP_SYM SymI_HasProto(MainCapability)
854 #else
855 # define MAIN_CAP_SYM
856 #endif
857
858 #if !defined(mingw32_HOST_OS)
859 #define RTS_USER_SIGNALS_SYMBOLS \
860 SymI_HasProto(setIOManagerControlFd) \
861 SymI_HasProto(setIOManagerWakeupFd) \
862 SymI_HasProto(ioManagerWakeup) \
863 SymI_HasProto(blockUserSignals) \
864 SymI_HasProto(unblockUserSignals)
865 #else
866 #define RTS_USER_SIGNALS_SYMBOLS \
867 SymI_HasProto(ioManagerWakeup) \
868 SymI_HasProto(sendIOManagerEvent) \
869 SymI_HasProto(readIOManagerEvent) \
870 SymI_HasProto(getIOManagerEvent) \
871 SymI_HasProto(console_handler)
872 #endif
873
874 #define RTS_LIBFFI_SYMBOLS \
875 SymE_NeedsProto(ffi_prep_cif) \
876 SymE_NeedsProto(ffi_call) \
877 SymE_NeedsProto(ffi_type_void) \
878 SymE_NeedsProto(ffi_type_float) \
879 SymE_NeedsProto(ffi_type_double) \
880 SymE_NeedsProto(ffi_type_sint64) \
881 SymE_NeedsProto(ffi_type_uint64) \
882 SymE_NeedsProto(ffi_type_sint32) \
883 SymE_NeedsProto(ffi_type_uint32) \
884 SymE_NeedsProto(ffi_type_sint16) \
885 SymE_NeedsProto(ffi_type_uint16) \
886 SymE_NeedsProto(ffi_type_sint8) \
887 SymE_NeedsProto(ffi_type_uint8) \
888 SymE_NeedsProto(ffi_type_pointer)
889
890 #ifdef TABLES_NEXT_TO_CODE
891 #define RTS_RET_SYMBOLS /* nothing */
892 #else
893 #define RTS_RET_SYMBOLS \
894 SymI_HasProto(stg_enter_ret) \
895 SymI_HasProto(stg_gc_fun_ret) \
896 SymI_HasProto(stg_ap_v_ret) \
897 SymI_HasProto(stg_ap_f_ret) \
898 SymI_HasProto(stg_ap_d_ret) \
899 SymI_HasProto(stg_ap_l_ret) \
900 SymI_HasProto(stg_ap_v16_ret) \
901 SymI_HasProto(stg_ap_v32_ret) \
902 SymI_HasProto(stg_ap_v64_ret) \
903 SymI_HasProto(stg_ap_n_ret) \
904 SymI_HasProto(stg_ap_p_ret) \
905 SymI_HasProto(stg_ap_pv_ret) \
906 SymI_HasProto(stg_ap_pp_ret) \
907 SymI_HasProto(stg_ap_ppv_ret) \
908 SymI_HasProto(stg_ap_ppp_ret) \
909 SymI_HasProto(stg_ap_pppv_ret) \
910 SymI_HasProto(stg_ap_pppp_ret) \
911 SymI_HasProto(stg_ap_ppppp_ret) \
912 SymI_HasProto(stg_ap_pppppp_ret)
913 #endif
914
915 /* Modules compiled with -ticky may mention ticky counters */
916 /* This list should marry up with the one in $(TOP)/includes/stg/Ticky.h */
917 #define RTS_TICKY_SYMBOLS \
918 SymI_NeedsProto(ticky_entry_ctrs) \
919 SymI_NeedsProto(top_ct) \
920 \
921 SymI_HasProto(ENT_VIA_NODE_ctr) \
922 SymI_HasProto(ENT_STATIC_THK_SINGLE_ctr) \
923 SymI_HasProto(ENT_STATIC_THK_MANY_ctr) \
924 SymI_HasProto(ENT_DYN_THK_SINGLE_ctr) \
925 SymI_HasProto(ENT_DYN_THK_MANY_ctr) \
926 SymI_HasProto(ENT_STATIC_FUN_DIRECT_ctr) \
927 SymI_HasProto(ENT_DYN_FUN_DIRECT_ctr) \
928 SymI_HasProto(ENT_STATIC_CON_ctr) \
929 SymI_HasProto(ENT_DYN_CON_ctr) \
930 SymI_HasProto(ENT_STATIC_IND_ctr) \
931 SymI_HasProto(ENT_DYN_IND_ctr) \
932 SymI_HasProto(ENT_PERM_IND_ctr) \
933 SymI_HasProto(ENT_PAP_ctr) \
934 SymI_HasProto(ENT_AP_ctr) \
935 SymI_HasProto(ENT_AP_STACK_ctr) \
936 SymI_HasProto(ENT_BH_ctr) \
937 SymI_HasProto(ENT_LNE_ctr) \
938 SymI_HasProto(UNKNOWN_CALL_ctr) \
939 SymI_HasProto(SLOW_CALL_fast_v16_ctr) \
940 SymI_HasProto(SLOW_CALL_fast_v_ctr) \
941 SymI_HasProto(SLOW_CALL_fast_f_ctr) \
942 SymI_HasProto(SLOW_CALL_fast_d_ctr) \
943 SymI_HasProto(SLOW_CALL_fast_l_ctr) \
944 SymI_HasProto(SLOW_CALL_fast_n_ctr) \
945 SymI_HasProto(SLOW_CALL_fast_p_ctr) \
946 SymI_HasProto(SLOW_CALL_fast_pv_ctr) \
947 SymI_HasProto(SLOW_CALL_fast_pp_ctr) \
948 SymI_HasProto(SLOW_CALL_fast_ppv_ctr) \
949 SymI_HasProto(SLOW_CALL_fast_ppp_ctr) \
950 SymI_HasProto(SLOW_CALL_fast_pppv_ctr) \
951 SymI_HasProto(SLOW_CALL_fast_pppp_ctr) \
952 SymI_HasProto(SLOW_CALL_fast_ppppp_ctr) \
953 SymI_HasProto(SLOW_CALL_fast_pppppp_ctr) \
954 SymI_HasProto(VERY_SLOW_CALL_ctr) \
955 SymI_HasProto(ticky_slow_call_unevald) \
956 SymI_HasProto(SLOW_CALL_ctr) \
957 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_ctr) \
958 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_CHUNKS_ctr) \
959 SymI_HasProto(KNOWN_CALL_ctr) \
960 SymI_HasProto(KNOWN_CALL_TOO_FEW_ARGS_ctr) \
961 SymI_HasProto(KNOWN_CALL_EXTRA_ARGS_ctr) \
962 SymI_HasProto(SLOW_CALL_FUN_TOO_FEW_ctr) \
963 SymI_HasProto(SLOW_CALL_FUN_CORRECT_ctr) \
964 SymI_HasProto(SLOW_CALL_FUN_TOO_MANY_ctr) \
965 SymI_HasProto(SLOW_CALL_PAP_TOO_FEW_ctr) \
966 SymI_HasProto(SLOW_CALL_PAP_CORRECT_ctr) \
967 SymI_HasProto(SLOW_CALL_PAP_TOO_MANY_ctr) \
968 SymI_HasProto(SLOW_CALL_UNEVALD_ctr) \
969 SymI_HasProto(UPDF_OMITTED_ctr) \
970 SymI_HasProto(UPDF_PUSHED_ctr) \
971 SymI_HasProto(CATCHF_PUSHED_ctr) \
972 SymI_HasProto(UPDF_RCC_PUSHED_ctr) \
973 SymI_HasProto(UPDF_RCC_OMITTED_ctr) \
974 SymI_HasProto(UPD_SQUEEZED_ctr) \
975 SymI_HasProto(UPD_CON_IN_NEW_ctr) \
976 SymI_HasProto(UPD_CON_IN_PLACE_ctr) \
977 SymI_HasProto(UPD_PAP_IN_NEW_ctr) \
978 SymI_HasProto(UPD_PAP_IN_PLACE_ctr) \
979 SymI_HasProto(ALLOC_HEAP_ctr) \
980 SymI_HasProto(ALLOC_HEAP_tot) \
981 SymI_HasProto(HEAP_CHK_ctr) \
982 SymI_HasProto(STK_CHK_ctr) \
983 SymI_HasProto(ALLOC_RTS_ctr) \
984 SymI_HasProto(ALLOC_RTS_tot) \
985 SymI_HasProto(ALLOC_FUN_ctr) \
986 SymI_HasProto(ALLOC_FUN_adm) \
987 SymI_HasProto(ALLOC_FUN_gds) \
988 SymI_HasProto(ALLOC_FUN_slp) \
989 SymI_HasProto(UPD_NEW_IND_ctr) \
990 SymI_HasProto(UPD_NEW_PERM_IND_ctr) \
991 SymI_HasProto(UPD_OLD_IND_ctr) \
992 SymI_HasProto(UPD_OLD_PERM_IND_ctr) \
993 SymI_HasProto(UPD_CAF_BH_UPDATABLE_ctr) \
994 SymI_HasProto(UPD_CAF_BH_SINGLE_ENTRY_ctr) \
995 SymI_HasProto(GC_SEL_ABANDONED_ctr) \
996 SymI_HasProto(GC_SEL_MINOR_ctr) \
997 SymI_HasProto(GC_SEL_MAJOR_ctr) \
998 SymI_HasProto(GC_FAILED_PROMOTION_ctr) \
999 SymI_HasProto(ALLOC_UP_THK_ctr) \
1000 SymI_HasProto(ALLOC_SE_THK_ctr) \
1001 SymI_HasProto(ALLOC_THK_adm) \
1002 SymI_HasProto(ALLOC_THK_gds) \
1003 SymI_HasProto(ALLOC_THK_slp) \
1004 SymI_HasProto(ALLOC_CON_ctr) \
1005 SymI_HasProto(ALLOC_CON_adm) \
1006 SymI_HasProto(ALLOC_CON_gds) \
1007 SymI_HasProto(ALLOC_CON_slp) \
1008 SymI_HasProto(ALLOC_TUP_ctr) \
1009 SymI_HasProto(ALLOC_TUP_adm) \
1010 SymI_HasProto(ALLOC_TUP_gds) \
1011 SymI_HasProto(ALLOC_TUP_slp) \
1012 SymI_HasProto(ALLOC_BH_ctr) \
1013 SymI_HasProto(ALLOC_BH_adm) \
1014 SymI_HasProto(ALLOC_BH_gds) \
1015 SymI_HasProto(ALLOC_BH_slp) \
1016 SymI_HasProto(ALLOC_PRIM_ctr) \
1017 SymI_HasProto(ALLOC_PRIM_adm) \
1018 SymI_HasProto(ALLOC_PRIM_gds) \
1019 SymI_HasProto(ALLOC_PRIM_slp) \
1020 SymI_HasProto(ALLOC_PAP_ctr) \
1021 SymI_HasProto(ALLOC_PAP_adm) \
1022 SymI_HasProto(ALLOC_PAP_gds) \
1023 SymI_HasProto(ALLOC_PAP_slp) \
1024 SymI_HasProto(ALLOC_TSO_ctr) \
1025 SymI_HasProto(ALLOC_TSO_adm) \
1026 SymI_HasProto(ALLOC_TSO_gds) \
1027 SymI_HasProto(ALLOC_TSO_slp) \
1028 SymI_HasProto(RET_NEW_ctr) \
1029 SymI_HasProto(RET_OLD_ctr) \
1030 SymI_HasProto(RET_UNBOXED_TUP_ctr) \
1031 SymI_HasProto(RET_SEMI_loads_avoided)
1032
1033
1034 // On most platforms, the garbage collector rewrites references
1035 // to small integer and char objects to a set of common, shared ones.
1036 //
1037 // We don't do this when compiling to Windows DLLs at the moment because
1038 // it doesn't support cross package data references well.
1039 //
1040 #if defined(COMPILING_WINDOWS_DLL)
1041 #define RTS_INTCHAR_SYMBOLS
1042 #else
1043 #define RTS_INTCHAR_SYMBOLS \
1044 SymI_HasProto(stg_CHARLIKE_closure) \
1045 SymI_HasProto(stg_INTLIKE_closure)
1046 #endif
1047
1048
1049 #define RTS_SYMBOLS \
1050 Maybe_Stable_Names \
1051 RTS_TICKY_SYMBOLS \
1052 SymI_HasProto(StgReturn) \
1053 SymI_HasProto(stg_gc_noregs) \
1054 SymI_HasProto(stg_ret_v_info) \
1055 SymI_HasProto(stg_ret_p_info) \
1056 SymI_HasProto(stg_ret_n_info) \
1057 SymI_HasProto(stg_ret_f_info) \
1058 SymI_HasProto(stg_ret_d_info) \
1059 SymI_HasProto(stg_ret_l_info) \
1060 SymI_HasProto(stg_gc_prim_p) \
1061 SymI_HasProto(stg_gc_prim_pp) \
1062 SymI_HasProto(stg_gc_prim_n) \
1063 SymI_HasProto(stg_enter_info) \
1064 SymI_HasProto(__stg_gc_enter_1) \
1065 SymI_HasProto(stg_gc_unpt_r1) \
1066 SymI_HasProto(stg_gc_unbx_r1) \
1067 SymI_HasProto(stg_gc_f1) \
1068 SymI_HasProto(stg_gc_d1) \
1069 SymI_HasProto(stg_gc_l1) \
1070 SymI_HasProto(stg_gc_pp) \
1071 SymI_HasProto(stg_gc_ppp) \
1072 SymI_HasProto(stg_gc_pppp) \
1073 SymI_HasProto(__stg_gc_fun) \
1074 SymI_HasProto(stg_gc_fun_info) \
1075 SymI_HasProto(stg_yield_noregs) \
1076 SymI_HasProto(stg_yield_to_interpreter) \
1077 SymI_HasProto(stg_block_noregs) \
1078 SymI_HasProto(stg_block_takemvar) \
1079 SymI_HasProto(stg_block_readmvar) \
1080 SymI_HasProto(stg_block_putmvar) \
1081 MAIN_CAP_SYM \
1082 SymI_HasProto(MallocFailHook) \
1083 SymI_HasProto(OnExitHook) \
1084 SymI_HasProto(OutOfHeapHook) \
1085 SymI_HasProto(StackOverflowHook) \
1086 SymI_HasProto(addDLL) \
1087 SymI_HasProto(__int_encodeDouble) \
1088 SymI_HasProto(__word_encodeDouble) \
1089 SymI_HasProto(__int_encodeFloat) \
1090 SymI_HasProto(__word_encodeFloat) \
1091 SymI_HasProto(stg_atomicallyzh) \
1092 SymI_HasProto(barf) \
1093 SymI_HasProto(debugBelch) \
1094 SymI_HasProto(errorBelch) \
1095 SymI_HasProto(sysErrorBelch) \
1096 SymI_HasProto(stg_getMaskingStatezh) \
1097 SymI_HasProto(stg_maskAsyncExceptionszh) \
1098 SymI_HasProto(stg_maskUninterruptiblezh) \
1099 SymI_HasProto(stg_catchzh) \
1100 SymI_HasProto(stg_catchRetryzh) \
1101 SymI_HasProto(stg_catchSTMzh) \
1102 SymI_HasProto(stg_checkzh) \
1103 SymI_HasProto(closure_flags) \
1104 SymI_HasProto(cmp_thread) \
1105 SymI_HasProto(createAdjustor) \
1106 SymI_HasProto(stg_decodeDoublezu2Intzh) \
1107 SymI_HasProto(stg_decodeFloatzuIntzh) \
1108 SymI_HasProto(defaultsHook) \
1109 SymI_HasProto(stg_delayzh) \
1110 SymI_HasProto(stg_deRefWeakzh) \
1111 SymI_HasProto(stg_deRefStablePtrzh) \
1112 SymI_HasProto(dirty_MUT_VAR) \
1113 SymI_HasProto(dirty_TVAR) \
1114 SymI_HasProto(stg_forkzh) \
1115 SymI_HasProto(stg_forkOnzh) \
1116 SymI_HasProto(forkProcess) \
1117 SymI_HasProto(forkOS_createThread) \
1118 SymI_HasProto(freeHaskellFunctionPtr) \
1119 SymI_HasProto(getOrSetGHCConcSignalSignalHandlerStore) \
1120 SymI_HasProto(getOrSetGHCConcWindowsPendingDelaysStore) \
1121 SymI_HasProto(getOrSetGHCConcWindowsIOManagerThreadStore) \
1122 SymI_HasProto(getOrSetGHCConcWindowsProddingStore) \
1123 SymI_HasProto(getOrSetSystemEventThreadEventManagerStore) \
1124 SymI_HasProto(getOrSetSystemEventThreadIOManagerThreadStore) \
1125 SymI_HasProto(getOrSetSystemTimerThreadEventManagerStore) \
1126 SymI_HasProto(getOrSetSystemTimerThreadIOManagerThreadStore) \
1127 SymI_HasProto(getOrSetLibHSghcFastStringTable) \
1128 SymI_HasProto(getGCStats) \
1129 SymI_HasProto(getGCStatsEnabled) \
1130 SymI_HasProto(genericRaise) \
1131 SymI_HasProto(getProgArgv) \
1132 SymI_HasProto(getFullProgArgv) \
1133 SymI_HasProto(getStablePtr) \
1134 SymI_HasProto(foreignExportStablePtr) \
1135 SymI_HasProto(hs_init) \
1136 SymI_HasProto(hs_exit) \
1137 SymI_HasProto(hs_set_argv) \
1138 SymI_HasProto(hs_add_root) \
1139 SymI_HasProto(hs_perform_gc) \
1140 SymI_HasProto(hs_lock_stable_tables) \
1141 SymI_HasProto(hs_unlock_stable_tables) \
1142 SymI_HasProto(hs_free_stable_ptr) \
1143 SymI_HasProto(hs_free_stable_ptr_unsafe) \
1144 SymI_HasProto(hs_free_fun_ptr) \
1145 SymI_HasProto(hs_hpc_rootModule) \
1146 SymI_HasProto(hs_hpc_module) \
1147 SymI_HasProto(initLinker) \
1148 SymI_HasProto(initLinker_) \
1149 SymI_HasProto(stg_unpackClosurezh) \
1150 SymI_HasProto(stg_getApStackValzh) \
1151 SymI_HasProto(stg_getSparkzh) \
1152 SymI_HasProto(stg_numSparkszh) \
1153 SymI_HasProto(stg_isCurrentThreadBoundzh) \
1154 SymI_HasProto(stg_isEmptyMVarzh) \
1155 SymI_HasProto(stg_killThreadzh) \
1156 SymI_HasProto(loadArchive) \
1157 SymI_HasProto(loadObj) \
1158 SymI_HasProto(insertSymbol) \
1159 SymI_HasProto(lookupSymbol) \
1160 SymI_HasProto(stg_makeStablePtrzh) \
1161 SymI_HasProto(stg_mkApUpd0zh) \
1162 SymI_HasProto(stg_myThreadIdzh) \
1163 SymI_HasProto(stg_labelThreadzh) \
1164 SymI_HasProto(stg_newArrayzh) \
1165 SymI_HasProto(stg_newArrayArrayzh) \
1166 SymI_HasProto(stg_casArrayzh) \
1167 SymI_HasProto(stg_newBCOzh) \
1168 SymI_HasProto(stg_newByteArrayzh) \
1169 SymI_HasProto(stg_casIntArrayzh) \
1170 SymI_HasProto(stg_fetchAddIntArrayzh) \
1171 SymI_HasProto(stg_newMVarzh) \
1172 SymI_HasProto(stg_newMutVarzh) \
1173 SymI_HasProto(stg_newTVarzh) \
1174 SymI_HasProto(stg_noDuplicatezh) \
1175 SymI_HasProto(stg_atomicModifyMutVarzh) \
1176 SymI_HasProto(stg_casMutVarzh) \
1177 SymI_HasProto(stg_newPinnedByteArrayzh) \
1178 SymI_HasProto(stg_newAlignedPinnedByteArrayzh) \
1179 SymI_HasProto(newSpark) \
1180 SymI_HasProto(performGC) \
1181 SymI_HasProto(performMajorGC) \
1182 SymI_HasProto(prog_argc) \
1183 SymI_HasProto(prog_argv) \
1184 SymI_HasProto(stg_putMVarzh) \
1185 SymI_HasProto(stg_raisezh) \
1186 SymI_HasProto(stg_raiseIOzh) \
1187 SymI_HasProto(stg_readTVarzh) \
1188 SymI_HasProto(stg_readTVarIOzh) \
1189 SymI_HasProto(resumeThread) \
1190 SymI_HasProto(setNumCapabilities) \
1191 SymI_HasProto(getNumberOfProcessors) \
1192 SymI_HasProto(resolveObjs) \
1193 SymI_HasProto(stg_retryzh) \
1194 SymI_HasProto(rts_apply) \
1195 SymI_HasProto(rts_checkSchedStatus) \
1196 SymI_HasProto(rts_eval) \
1197 SymI_HasProto(rts_evalIO) \
1198 SymI_HasProto(rts_evalLazyIO) \
1199 SymI_HasProto(rts_evalStableIO) \
1200 SymI_HasProto(rts_eval_) \
1201 SymI_HasProto(rts_getBool) \
1202 SymI_HasProto(rts_getChar) \
1203 SymI_HasProto(rts_getDouble) \
1204 SymI_HasProto(rts_getFloat) \
1205 SymI_HasProto(rts_getInt) \
1206 SymI_HasProto(rts_getInt8) \
1207 SymI_HasProto(rts_getInt16) \
1208 SymI_HasProto(rts_getInt32) \
1209 SymI_HasProto(rts_getInt64) \
1210 SymI_HasProto(rts_getPtr) \
1211 SymI_HasProto(rts_getFunPtr) \
1212 SymI_HasProto(rts_getStablePtr) \
1213 SymI_HasProto(rts_getThreadId) \
1214 SymI_HasProto(rts_getWord) \
1215 SymI_HasProto(rts_getWord8) \
1216 SymI_HasProto(rts_getWord16) \
1217 SymI_HasProto(rts_getWord32) \
1218 SymI_HasProto(rts_getWord64) \
1219 SymI_HasProto(rts_lock) \
1220 SymI_HasProto(rts_mkBool) \
1221 SymI_HasProto(rts_mkChar) \
1222 SymI_HasProto(rts_mkDouble) \
1223 SymI_HasProto(rts_mkFloat) \
1224 SymI_HasProto(rts_mkInt) \
1225 SymI_HasProto(rts_mkInt8) \
1226 SymI_HasProto(rts_mkInt16) \
1227 SymI_HasProto(rts_mkInt32) \
1228 SymI_HasProto(rts_mkInt64) \
1229 SymI_HasProto(rts_mkPtr) \
1230 SymI_HasProto(rts_mkFunPtr) \
1231 SymI_HasProto(rts_mkStablePtr) \
1232 SymI_HasProto(rts_mkString) \
1233 SymI_HasProto(rts_mkWord) \
1234 SymI_HasProto(rts_mkWord8) \
1235 SymI_HasProto(rts_mkWord16) \
1236 SymI_HasProto(rts_mkWord32) \
1237 SymI_HasProto(rts_mkWord64) \
1238 SymI_HasProto(rts_unlock) \
1239 SymI_HasProto(rts_unsafeGetMyCapability) \
1240 SymI_HasProto(rtsSupportsBoundThreads) \
1241 SymI_HasProto(rts_isProfiled) \
1242 SymI_HasProto(rts_isDynamic) \
1243 SymI_HasProto(setProgArgv) \
1244 SymI_HasProto(startupHaskell) \
1245 SymI_HasProto(shutdownHaskell) \
1246 SymI_HasProto(shutdownHaskellAndExit) \
1247 SymI_HasProto(stable_name_table) \
1248 SymI_HasProto(stable_ptr_table) \
1249 SymI_HasProto(stackOverflow) \
1250 SymI_HasProto(stg_CAF_BLACKHOLE_info) \
1251 SymI_HasProto(stg_BLACKHOLE_info) \
1252 SymI_HasProto(__stg_EAGER_BLACKHOLE_info) \
1253 SymI_HasProto(stg_BLOCKING_QUEUE_CLEAN_info) \
1254 SymI_HasProto(stg_BLOCKING_QUEUE_DIRTY_info) \
1255 SymI_HasProto(startTimer) \
1256 SymI_HasProto(stg_MVAR_CLEAN_info) \
1257 SymI_HasProto(stg_MVAR_DIRTY_info) \
1258 SymI_HasProto(stg_TVAR_CLEAN_info) \
1259 SymI_HasProto(stg_TVAR_DIRTY_info) \
1260 SymI_HasProto(stg_IND_STATIC_info) \
1261 SymI_HasProto(stg_ARR_WORDS_info) \
1262 SymI_HasProto(stg_MUT_ARR_PTRS_DIRTY_info) \
1263 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN_info) \
1264 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN0_info) \
1265 SymI_HasProto(stg_MUT_VAR_CLEAN_info) \
1266 SymI_HasProto(stg_MUT_VAR_DIRTY_info) \
1267 SymI_HasProto(stg_WEAK_info) \
1268 SymI_HasProto(stg_ap_v_info) \
1269 SymI_HasProto(stg_ap_f_info) \
1270 SymI_HasProto(stg_ap_d_info) \
1271 SymI_HasProto(stg_ap_l_info) \
1272 SymI_HasProto(stg_ap_v16_info) \
1273 SymI_HasProto(stg_ap_v32_info) \
1274 SymI_HasProto(stg_ap_v64_info) \
1275 SymI_HasProto(stg_ap_n_info) \
1276 SymI_HasProto(stg_ap_p_info) \
1277 SymI_HasProto(stg_ap_pv_info) \
1278 SymI_HasProto(stg_ap_pp_info) \
1279 SymI_HasProto(stg_ap_ppv_info) \
1280 SymI_HasProto(stg_ap_ppp_info) \
1281 SymI_HasProto(stg_ap_pppv_info) \
1282 SymI_HasProto(stg_ap_pppp_info) \
1283 SymI_HasProto(stg_ap_ppppp_info) \
1284 SymI_HasProto(stg_ap_pppppp_info) \
1285 SymI_HasProto(stg_ap_0_fast) \
1286 SymI_HasProto(stg_ap_v_fast) \
1287 SymI_HasProto(stg_ap_f_fast) \
1288 SymI_HasProto(stg_ap_d_fast) \
1289 SymI_HasProto(stg_ap_l_fast) \
1290 SymI_HasProto(stg_ap_v16_fast) \
1291 SymI_HasProto(stg_ap_v32_fast) \
1292 SymI_HasProto(stg_ap_v64_fast) \
1293 SymI_HasProto(stg_ap_n_fast) \
1294 SymI_HasProto(stg_ap_p_fast) \
1295 SymI_HasProto(stg_ap_pv_fast) \
1296 SymI_HasProto(stg_ap_pp_fast) \
1297 SymI_HasProto(stg_ap_ppv_fast) \
1298 SymI_HasProto(stg_ap_ppp_fast) \
1299 SymI_HasProto(stg_ap_pppv_fast) \
1300 SymI_HasProto(stg_ap_pppp_fast) \
1301 SymI_HasProto(stg_ap_ppppp_fast) \
1302 SymI_HasProto(stg_ap_pppppp_fast) \
1303 SymI_HasProto(stg_ap_1_upd_info) \
1304 SymI_HasProto(stg_ap_2_upd_info) \
1305 SymI_HasProto(stg_ap_3_upd_info) \
1306 SymI_HasProto(stg_ap_4_upd_info) \
1307 SymI_HasProto(stg_ap_5_upd_info) \
1308 SymI_HasProto(stg_ap_6_upd_info) \
1309 SymI_HasProto(stg_ap_7_upd_info) \
1310 SymI_HasProto(stg_exit) \
1311 SymI_HasProto(stg_sel_0_upd_info) \
1312 SymI_HasProto(stg_sel_1_upd_info) \
1313 SymI_HasProto(stg_sel_2_upd_info) \
1314 SymI_HasProto(stg_sel_3_upd_info) \
1315 SymI_HasProto(stg_sel_4_upd_info) \
1316 SymI_HasProto(stg_sel_5_upd_info) \
1317 SymI_HasProto(stg_sel_6_upd_info) \
1318 SymI_HasProto(stg_sel_7_upd_info) \
1319 SymI_HasProto(stg_sel_8_upd_info) \
1320 SymI_HasProto(stg_sel_9_upd_info) \
1321 SymI_HasProto(stg_sel_10_upd_info) \
1322 SymI_HasProto(stg_sel_11_upd_info) \
1323 SymI_HasProto(stg_sel_12_upd_info) \
1324 SymI_HasProto(stg_sel_13_upd_info) \
1325 SymI_HasProto(stg_sel_14_upd_info) \
1326 SymI_HasProto(stg_sel_15_upd_info) \
1327 SymI_HasProto(stg_sel_0_noupd_info) \
1328 SymI_HasProto(stg_sel_1_noupd_info) \
1329 SymI_HasProto(stg_sel_2_noupd_info) \
1330 SymI_HasProto(stg_sel_3_noupd_info) \
1331 SymI_HasProto(stg_sel_4_noupd_info) \
1332 SymI_HasProto(stg_sel_5_noupd_info) \
1333 SymI_HasProto(stg_sel_6_noupd_info) \
1334 SymI_HasProto(stg_sel_7_noupd_info) \
1335 SymI_HasProto(stg_sel_8_noupd_info) \
1336 SymI_HasProto(stg_sel_9_noupd_info) \
1337 SymI_HasProto(stg_sel_10_noupd_info) \
1338 SymI_HasProto(stg_sel_11_noupd_info) \
1339 SymI_HasProto(stg_sel_12_noupd_info) \
1340 SymI_HasProto(stg_sel_13_noupd_info) \
1341 SymI_HasProto(stg_sel_14_noupd_info) \
1342 SymI_HasProto(stg_sel_15_noupd_info) \
1343 SymI_HasProto(stg_upd_frame_info) \
1344 SymI_HasProto(stg_bh_upd_frame_info) \
1345 SymI_HasProto(suspendThread) \
1346 SymI_HasProto(stg_takeMVarzh) \
1347 SymI_HasProto(stg_readMVarzh) \
1348 SymI_HasProto(stg_threadStatuszh) \
1349 SymI_HasProto(stg_tryPutMVarzh) \
1350 SymI_HasProto(stg_tryTakeMVarzh) \
1351 SymI_HasProto(stg_tryReadMVarzh) \
1352 SymI_HasProto(stg_unmaskAsyncExceptionszh) \
1353 SymI_HasProto(unloadObj) \
1354 SymI_HasProto(stg_unsafeThawArrayzh) \
1355 SymI_HasProto(stg_waitReadzh) \
1356 SymI_HasProto(stg_waitWritezh) \
1357 SymI_HasProto(stg_writeTVarzh) \
1358 SymI_HasProto(stg_yieldzh) \
1359 SymI_NeedsProto(stg_interp_constr_entry) \
1360 SymI_HasProto(stg_arg_bitmaps) \
1361 SymI_HasProto(large_alloc_lim) \
1362 SymI_HasProto(g0) \
1363 SymI_HasProto(allocate) \
1364 SymI_HasProto(allocateExec) \
1365 SymI_HasProto(flushExec) \
1366 SymI_HasProto(freeExec) \
1367 SymI_HasProto(getAllocations) \
1368 SymI_HasProto(revertCAFs) \
1369 SymI_HasProto(RtsFlags) \
1370 SymI_NeedsProto(rts_breakpoint_io_action) \
1371 SymI_NeedsProto(rts_stop_next_breakpoint) \
1372 SymI_NeedsProto(rts_stop_on_exception) \
1373 SymI_HasProto(stopTimer) \
1374 SymI_HasProto(n_capabilities) \
1375 SymI_HasProto(enabled_capabilities) \
1376 SymI_HasProto(stg_traceCcszh) \
1377 SymI_HasProto(stg_traceEventzh) \
1378 SymI_HasProto(stg_traceMarkerzh) \
1379 SymI_HasProto(getMonotonicNSec) \
1380 SymI_HasProto(lockFile) \
1381 SymI_HasProto(unlockFile) \
1382 SymI_HasProto(startProfTimer) \
1383 SymI_HasProto(stopProfTimer) \
1384 SymI_HasProto(atomic_inc) \
1385 SymI_HasProto(atomic_dec) \
1386 RTS_USER_SIGNALS_SYMBOLS \
1387 RTS_INTCHAR_SYMBOLS
1388
1389
1390 // 64-bit support functions in libgcc.a
1391 #if defined(__GNUC__) && SIZEOF_VOID_P <= 4 && !defined(_ABIN32)
1392 #define RTS_LIBGCC_SYMBOLS \
1393 SymI_NeedsProto(__divdi3) \
1394 SymI_NeedsProto(__udivdi3) \
1395 SymI_NeedsProto(__moddi3) \
1396 SymI_NeedsProto(__umoddi3) \
1397 SymI_NeedsProto(__muldi3) \
1398 SymI_NeedsProto(__ashldi3) \
1399 SymI_NeedsProto(__ashrdi3) \
1400 SymI_NeedsProto(__lshrdi3) \
1401 SymI_NeedsProto(__fixunsdfdi)
1402 #else
1403 #define RTS_LIBGCC_SYMBOLS
1404 #endif
1405
1406 #if defined(darwin_HOST_OS) && defined(powerpc_HOST_ARCH)
1407 // Symbols that don't have a leading underscore
1408 // on Mac OS X. They have to receive special treatment,
1409 // see machoInitSymbolsWithoutUnderscore()
1410 #define RTS_MACHO_NOUNDERLINE_SYMBOLS \
1411 SymI_NeedsProto(saveFP) \
1412 SymI_NeedsProto(restFP)
1413 #endif
1414
1415 /* entirely bogus claims about types of these symbols */
1416 #define SymI_NeedsProto(vvv) extern void vvv(void);
1417 #if defined(COMPILING_WINDOWS_DLL)
1418 #define SymE_HasProto(vvv) SymE_HasProto(vvv);
1419 # if defined(x86_64_HOST_ARCH)
1420 # define SymE_NeedsProto(vvv) extern void __imp_ ## vvv (void);
1421 # else
1422 # define SymE_NeedsProto(vvv) extern void _imp__ ## vvv (void);
1423 # endif
1424 #else
1425 #define SymE_NeedsProto(vvv) SymI_NeedsProto(vvv);
1426 #define SymE_HasProto(vvv) SymI_HasProto(vvv)
1427 #endif
1428 #define SymI_HasProto(vvv) /**/
1429 #define SymI_HasProto_redirect(vvv,xxx) /**/
1430 RTS_SYMBOLS
1431 RTS_RET_SYMBOLS
1432 RTS_POSIX_ONLY_SYMBOLS
1433 RTS_MINGW_ONLY_SYMBOLS
1434 RTS_CYGWIN_ONLY_SYMBOLS
1435 RTS_DARWIN_ONLY_SYMBOLS
1436 RTS_LIBGCC_SYMBOLS
1437 RTS_LIBFFI_SYMBOLS
1438 #undef SymI_NeedsProto
1439 #undef SymI_HasProto
1440 #undef SymI_HasProto_redirect
1441 #undef SymE_HasProto
1442 #undef SymE_NeedsProto
1443
1444 #ifdef LEADING_UNDERSCORE
1445 #define MAYBE_LEADING_UNDERSCORE_STR(s) ("_" s)
1446 #else
1447 #define MAYBE_LEADING_UNDERSCORE_STR(s) (s)
1448 #endif
1449
1450 #define SymI_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1451 (void*)(&(vvv)) },
1452 #define SymE_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1453 (void*)DLL_IMPORT_DATA_REF(vvv) },
1454
1455 #define SymI_NeedsProto(vvv) SymI_HasProto(vvv)
1456 #define SymE_NeedsProto(vvv) SymE_HasProto(vvv)
1457
1458 // SymI_HasProto_redirect allows us to redirect references to one symbol to
1459 // another symbol. See newCAF/newDynCAF for an example.
1460 #define SymI_HasProto_redirect(vvv,xxx) \
1461 { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1462 (void*)(&(xxx)) },
1463
1464 static RtsSymbolVal rtsSyms[] = {
1465 RTS_SYMBOLS
1466 RTS_RET_SYMBOLS
1467 RTS_POSIX_ONLY_SYMBOLS
1468 RTS_MINGW_ONLY_SYMBOLS
1469 RTS_CYGWIN_ONLY_SYMBOLS
1470 RTS_DARWIN_ONLY_SYMBOLS
1471 RTS_LIBGCC_SYMBOLS
1472 RTS_LIBFFI_SYMBOLS
1473 #if defined(darwin_HOST_OS) && defined(i386_HOST_ARCH)
1474 // dyld stub code contains references to this,
1475 // but it should never be called because we treat
1476 // lazy pointers as nonlazy.
1477 { "dyld_stub_binding_helper", (void*)0xDEADBEEF },
1478 #endif
1479 { 0, 0 } /* sentinel */
1480 };
1481
1482
1483 /* -----------------------------------------------------------------------------
1484 * Insert symbols into hash tables, checking for duplicates.
1485 */
1486
1487 static void ghciInsertSymbolTable(
1488 pathchar* obj_name,
1489 HashTable *table,
1490 char* key,
1491 void *data,
1492 HsBool weak,
1493 ObjectCode *owner)
1494 {
1495 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1496 if (!pinfo) /* new entry */
1497 {
1498 pinfo = stgMallocBytes(sizeof (*pinfo), "ghciInsertToSymbolTable");
1499 pinfo->value = data;
1500 pinfo->owner = owner;
1501 pinfo->weak = weak;
1502 insertStrHashTable(table, key, pinfo);
1503 return;
1504 } else if ((!pinfo->weak || pinfo->value) && weak) {
1505 return; /* duplicate weak symbol, throw it away */
1506 } else if (pinfo->weak) /* weak symbol is in the table */
1507 {
1508 /* override the weak definition with the non-weak one */
1509 pinfo->value = data;
1510 pinfo->owner = owner;
1511 pinfo->weak = HS_BOOL_FALSE;
1512 return;
1513 }
1514 debugBelch(
1515 "\n\n"
1516 "GHCi runtime linker: fatal error: I found a duplicate definition for symbol\n"
1517 " %s\n"
1518 "whilst processing object file\n"
1519 " %" PATH_FMT "\n"
1520 "This could be caused by:\n"
1521 " * Loading two different object files which export the same symbol\n"
1522 " * Specifying the same object file twice on the GHCi command line\n"
1523 " * An incorrect `package.conf' entry, causing some object to be\n"
1524 " loaded twice.\n"
1525 "GHCi cannot safely continue in this situation. Exiting now. Sorry.\n"
1526 "\n",
1527 (char*)key,
1528 obj_name
1529 );
1530 stg_exit(1);
1531 }
1532
1533 static HsBool ghciLookupSymbolTable(HashTable *table,
1534 const char *key, void **result)
1535 {
1536 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1537 if (!pinfo) {
1538 *result = NULL;
1539 return HS_BOOL_FALSE;
1540 }
1541 if (pinfo->weak)
1542 IF_DEBUG(linker, debugBelch("lookup: promoting %s\n", key));
1543 /* Once it's looked up, it can no longer be overridden */
1544 pinfo->weak = HS_BOOL_FALSE;
1545
1546 *result = pinfo->value;
1547 return HS_BOOL_TRUE;
1548 }
1549
1550 static void ghciRemoveSymbolTable(HashTable *table, const char *key,
1551 ObjectCode *owner)
1552 {
1553 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1554 if (!pinfo || owner != pinfo->owner) return;
1555 removeStrHashTable(table, key, NULL);
1556 stgFree(pinfo);
1557 }
1558 /* -----------------------------------------------------------------------------
1559 * initialize the object linker
1560 */
1561
1562
1563 static int linker_init_done = 0 ;
1564
1565 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1566 static void *dl_prog_handle;
1567 static regex_t re_invalid;
1568 static regex_t re_realso;
1569 #ifdef THREADED_RTS
1570 static Mutex dl_mutex; // mutex to protect dlopen/dlerror critical section
1571 #endif
1572 #endif
1573
1574 void initLinker (void)
1575 {
1576 // default to retaining CAFs for backwards compatibility. Most
1577 // users will want initLinker_(0): otherwise unloadObj() will not
1578 // be able to unload object files when they contain CAFs.
1579 initLinker_(1);
1580 }
1581
1582 void
1583 initLinker_ (int retain_cafs)
1584 {
1585 RtsSymbolVal *sym;
1586 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1587 int compileResult;
1588 #endif
1589
1590 IF_DEBUG(linker, debugBelch("initLinker: start\n"));
1591
1592 /* Make initLinker idempotent, so we can call it
1593 before every relevant operation; that means we
1594 don't need to initialise the linker separately */
1595 if (linker_init_done == 1) {
1596 IF_DEBUG(linker, debugBelch("initLinker: idempotent return\n"));
1597 return;
1598 } else {
1599 linker_init_done = 1;
1600 }
1601
1602 objects = NULL;
1603 unloaded_objects = NULL;
1604
1605 #if defined(THREADED_RTS) && (defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO))
1606 initMutex(&dl_mutex);
1607 #endif
1608 symhash = allocStrHashTable();
1609
1610 /* populate the symbol table with stuff from the RTS */
1611 for (sym = rtsSyms; sym->lbl != NULL; sym++) {
1612 ghciInsertSymbolTable(WSTR("(GHCi built-in symbols)"),
1613 symhash, sym->lbl, sym->addr, HS_BOOL_FALSE, NULL);
1614 IF_DEBUG(linker, debugBelch("initLinker: inserting rts symbol %s, %p\n", sym->lbl, sym->addr));
1615 }
1616 # if defined(OBJFORMAT_MACHO) && defined(powerpc_HOST_ARCH)
1617 machoInitSymbolsWithoutUnderscore();
1618 # endif
1619 /* GCC defines a special symbol __dso_handle which is resolved to NULL if
1620 referenced from a statically linked module. We need to mimic this, but
1621 we cannot use NULL because we use it to mean nonexistent symbols. So we
1622 use an arbitrary (hopefully unique) address here.
1623 */
1624 ghciInsertSymbolTable(WSTR("(GHCi special symbols)"),
1625 symhash, "__dso_handle", (void *)0x12345687, HS_BOOL_FALSE, NULL);
1626
1627 // Redurect newCAF to newDynCAF if retain_cafs is true.
1628 ghciInsertSymbolTable(WSTR("(GHCi built-in symbols)"), symhash,
1629 MAYBE_LEADING_UNDERSCORE_STR("newCAF"),
1630 retain_cafs ? newDynCAF : newCAF,
1631 HS_BOOL_FALSE, NULL);
1632
1633 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1634 # if defined(RTLD_DEFAULT)
1635 dl_prog_handle = RTLD_DEFAULT;
1636 # else
1637 dl_prog_handle = dlopen(NULL, RTLD_LAZY);
1638 # endif /* RTLD_DEFAULT */
1639
1640 compileResult = regcomp(&re_invalid,
1641 "(([^ \t()])+\\.so([^ \t:()])*):([ \t])*(invalid ELF header|file too short)",
1642 REG_EXTENDED);
1643 if (compileResult != 0) {
1644 barf("Compiling re_invalid failed");
1645 }
1646 compileResult = regcomp(&re_realso,
1647 "(GROUP|INPUT) *\\( *([^ )]+)",
1648 REG_EXTENDED);
1649 if (compileResult != 0) {
1650 barf("Compiling re_realso failed");
1651 }
1652 # endif
1653
1654 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1655 if (RtsFlags.MiscFlags.linkerMemBase != 0) {
1656 // User-override for mmap_32bit_base
1657 mmap_32bit_base = (void*)RtsFlags.MiscFlags.linkerMemBase;
1658 }
1659 #endif
1660
1661 #if defined(mingw32_HOST_OS)
1662 /*
1663 * These two libraries cause problems when added to the static link,
1664 * but are necessary for resolving symbols in GHCi, hence we load
1665 * them manually here.
1666 */
1667 addDLL(WSTR("msvcrt"));
1668 addDLL(WSTR("kernel32"));
1669 #endif
1670
1671 IF_DEBUG(linker, debugBelch("initLinker: done\n"));
1672 return;
1673 }
1674
1675 void
1676 exitLinker( void ) {
1677 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1678 if (linker_init_done == 1) {
1679 regfree(&re_invalid);
1680 regfree(&re_realso);
1681 #ifdef THREADED_RTS
1682 closeMutex(&dl_mutex);
1683 #endif
1684 }
1685 #endif
1686 }
1687
1688 /* -----------------------------------------------------------------------------
1689 * Loading DLL or .so dynamic libraries
1690 * -----------------------------------------------------------------------------
1691 *
1692 * Add a DLL from which symbols may be found. In the ELF case, just
1693 * do RTLD_GLOBAL-style add, so no further messing around needs to
1694 * happen in order that symbols in the loaded .so are findable --
1695 * lookupSymbol() will subsequently see them by dlsym on the program's
1696 * dl-handle. Returns NULL if success, otherwise ptr to an err msg.
1697 *
1698 * In the PEi386 case, open the DLLs and put handles to them in a
1699 * linked list. When looking for a symbol, try all handles in the
1700 * list. This means that we need to load even DLLs that are guaranteed
1701 * to be in the ghc.exe image already, just so we can get a handle
1702 * to give to loadSymbol, so that we can find the symbols. For such
1703 * libraries, the LoadLibrary call should be a no-op except for returning
1704 * the handle.
1705 *
1706 */
1707
1708 #if defined(OBJFORMAT_PEi386)
1709 /* A record for storing handles into DLLs. */
1710
1711 typedef
1712 struct _OpenedDLL {
1713 pathchar* name;
1714 struct _OpenedDLL* next;
1715 HINSTANCE instance;
1716 }
1717 OpenedDLL;
1718
1719 /* A list thereof. */
1720 static OpenedDLL* opened_dlls = NULL;
1721
1722 /* A record for storing indirectly linked functions from DLLs. */
1723 typedef
1724 struct _IndirectAddr {
1725 void* addr;
1726 struct _IndirectAddr* next;
1727 }
1728 IndirectAddr;
1729
1730 /* A list thereof. */
1731 static IndirectAddr* indirects = NULL;
1732
1733 #endif
1734
1735 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1736
1737 /* Suppose in ghci we load a temporary SO for a module containing
1738 f = 1
1739 and then modify the module, recompile, and load another temporary
1740 SO with
1741 f = 2
1742 Then as we don't unload the first SO, dlsym will find the
1743 f = 1
1744 symbol whereas we want the
1745 f = 2
1746 symbol. We therefore need to keep our own SO handle list, and
1747 try SOs in the right order. */
1748
1749 typedef
1750 struct _OpenedSO {
1751 struct _OpenedSO* next;
1752 void *handle;
1753 }
1754 OpenedSO;
1755
1756 /* A list thereof. */
1757 static OpenedSO* openedSOs = NULL;
1758
1759 static const char *
1760 internal_dlopen(const char *dll_name)
1761 {
1762 OpenedSO* o_so;
1763 void *hdl;
1764 const char *errmsg;
1765 char *errmsg_copy;
1766
1767 // omitted: RTLD_NOW
1768 // see http://www.haskell.org/pipermail/cvs-ghc/2007-September/038570.html
1769 IF_DEBUG(linker,
1770 debugBelch("internal_dlopen: dll_name = '%s'\n", dll_name));
1771
1772 //-------------- Begin critical section ------------------
1773 // This critical section is necessary because dlerror() is not
1774 // required to be reentrant (see POSIX -- IEEE Std 1003.1-2008)
1775 // Also, the error message returned must be copied to preserve it
1776 // (see POSIX also)
1777
1778 ACQUIRE_LOCK(&dl_mutex);
1779 hdl = dlopen(dll_name, RTLD_LAZY | RTLD_GLOBAL);
1780
1781 errmsg = NULL;
1782 if (hdl == NULL) {
1783 /* dlopen failed; return a ptr to the error msg. */
1784 errmsg = dlerror();
1785 if (errmsg == NULL) errmsg = "addDLL: unknown error";
1786 errmsg_copy = stgMallocBytes(strlen(errmsg)+1, "addDLL");
1787 strcpy(errmsg_copy, errmsg);
1788 errmsg = errmsg_copy;
1789 }
1790 o_so = stgMallocBytes(sizeof(OpenedSO), "addDLL");
1791 o_so->handle = hdl;
1792 o_so->next = openedSOs;
1793 openedSOs = o_so;
1794
1795 RELEASE_LOCK(&dl_mutex);
1796 //--------------- End critical section -------------------
1797
1798 return errmsg;
1799 }
1800
1801 static void *
1802 internal_dlsym(void *hdl, const char *symbol) {
1803 OpenedSO* o_so;
1804 void *v;
1805
1806 // We acquire dl_mutex as concurrent dl* calls may alter dlerror
1807 ACQUIRE_LOCK(&dl_mutex);
1808 dlerror();
1809 for (o_so = openedSOs; o_so != NULL; o_so = o_so->next) {
1810 v = dlsym(o_so->handle, symbol);
1811 if (dlerror() == NULL) {
1812 RELEASE_LOCK(&dl_mutex);
1813 return v;
1814 }
1815 }
1816 v = dlsym(hdl, symbol);
1817 RELEASE_LOCK(&dl_mutex);
1818 return v;
1819 }
1820 # endif
1821
1822 const char *
1823 addDLL( pathchar *dll_name )
1824 {
1825 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1826 /* ------------------- ELF DLL loader ------------------- */
1827
1828 #define NMATCH 5
1829 regmatch_t match[NMATCH];
1830 const char *errmsg;
1831 FILE* fp;
1832 size_t match_length;
1833 #define MAXLINE 1000
1834 char line[MAXLINE];
1835 int result;
1836
1837 initLinker();
1838
1839 IF_DEBUG(linker, debugBelch("addDLL: dll_name = '%s'\n", dll_name));
1840 errmsg = internal_dlopen(dll_name);
1841
1842 if (errmsg == NULL) {
1843 return NULL;
1844 }
1845
1846 // GHC Trac ticket #2615
1847 // On some systems (e.g., Gentoo Linux) dynamic files (e.g. libc.so)
1848 // contain linker scripts rather than ELF-format object code. This
1849 // code handles the situation by recognizing the real object code
1850 // file name given in the linker script.
1851 //
1852 // If an "invalid ELF header" error occurs, it is assumed that the
1853 // .so file contains a linker script instead of ELF object code.
1854 // In this case, the code looks for the GROUP ( ... ) linker
1855 // directive. If one is found, the first file name inside the
1856 // parentheses is treated as the name of a dynamic library and the
1857 // code attempts to dlopen that file. If this is also unsuccessful,
1858 // an error message is returned.
1859
1860 // see if the error message is due to an invalid ELF header
1861 IF_DEBUG(linker, debugBelch("errmsg = '%s'\n", errmsg));
1862 result = regexec(&re_invalid, errmsg, (size_t) NMATCH, match, 0);
1863 IF_DEBUG(linker, debugBelch("result = %i\n", result));
1864 if (result == 0) {
1865 // success -- try to read the named file as a linker script
1866 match_length = (size_t) stg_min((match[1].rm_eo - match[1].rm_so),
1867 MAXLINE-1);
1868 strncpy(line, (errmsg+(match[1].rm_so)),match_length);
1869 line[match_length] = '\0'; // make sure string is null-terminated
1870 IF_DEBUG(linker, debugBelch ("file name = '%s'\n", line));
1871 if ((fp = fopen(line, "r")) == NULL) {
1872 return errmsg; // return original error if open fails
1873 }
1874 // try to find a GROUP or INPUT ( ... ) command
1875 while (fgets(line, MAXLINE, fp) != NULL) {
1876 IF_DEBUG(linker, debugBelch("input line = %s", line));
1877 if (regexec(&re_realso, line, (size_t) NMATCH, match, 0) == 0) {
1878 // success -- try to dlopen the first named file
1879 IF_DEBUG(linker, debugBelch("match%s\n",""));
1880 line[match[2].rm_eo] = '\0';
1881 errmsg = internal_dlopen(line+match[2].rm_so);
1882 break;
1883 }
1884 // if control reaches here, no GROUP or INPUT ( ... ) directive
1885 // was found and the original error message is returned to the
1886 // caller
1887 }
1888 fclose(fp);
1889 }
1890 return errmsg;
1891
1892 # elif defined(OBJFORMAT_PEi386)
1893 /* ------------------- Win32 DLL loader ------------------- */
1894
1895 pathchar* buf;
1896 OpenedDLL* o_dll;
1897 HINSTANCE instance;
1898
1899 initLinker();
1900
1901 /* debugBelch("\naddDLL; dll_name = `%s'\n", dll_name); */
1902
1903 /* See if we've already got it, and ignore if so. */
1904 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
1905 if (0 == pathcmp(o_dll->name, dll_name))
1906 return NULL;
1907 }
1908
1909 /* The file name has no suffix (yet) so that we can try
1910 both foo.dll and foo.drv
1911
1912 The documentation for LoadLibrary says:
1913 If no file name extension is specified in the lpFileName
1914 parameter, the default library extension .dll is
1915 appended. However, the file name string can include a trailing
1916 point character (.) to indicate that the module name has no
1917 extension. */
1918
1919 buf = stgMallocBytes((pathlen(dll_name) + 10) * sizeof(wchar_t), "addDLL");
1920 swprintf(buf, L"%s.DLL", dll_name);
1921 instance = LoadLibraryW(buf);
1922 if (instance == NULL) {
1923 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1924 // KAA: allow loading of drivers (like winspool.drv)
1925 swprintf(buf, L"%s.DRV", dll_name);
1926 instance = LoadLibraryW(buf);
1927 if (instance == NULL) {
1928 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1929 // #1883: allow loading of unix-style libfoo.dll DLLs
1930 swprintf(buf, L"lib%s.DLL", dll_name);
1931 instance = LoadLibraryW(buf);
1932 if (instance == NULL) {
1933 goto error;
1934 }
1935 }
1936 }
1937 stgFree(buf);
1938
1939 /* Add this DLL to the list of DLLs in which to search for symbols. */
1940 o_dll = stgMallocBytes( sizeof(OpenedDLL), "addDLL" );
1941 o_dll->name = pathdup(dll_name);
1942 o_dll->instance = instance;
1943 o_dll->next = opened_dlls;
1944 opened_dlls = o_dll;
1945
1946 return NULL;
1947
1948 error:
1949 stgFree(buf);
1950 sysErrorBelch("%" PATH_FMT, dll_name);
1951
1952 /* LoadLibrary failed; return a ptr to the error msg. */
1953 return "addDLL: could not load DLL";
1954
1955 # else
1956 barf("addDLL: not implemented on this platform");
1957 # endif
1958 }
1959
1960 /* -----------------------------------------------------------------------------
1961 * insert a symbol in the hash table
1962 */
1963 void
1964 insertSymbol(pathchar* obj_name, char* key, void* data)
1965 {
1966 ghciInsertSymbolTable(obj_name, symhash, key, data, HS_BOOL_FALSE, NULL);
1967 }
1968
1969 /* -----------------------------------------------------------------------------
1970 * lookup a symbol in the hash table
1971 */
1972 void *
1973 lookupSymbol( char *lbl )
1974 {
1975 void *val;
1976 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s\n", lbl));
1977 initLinker() ;
1978 ASSERT(symhash != NULL);
1979
1980 if (!ghciLookupSymbolTable(symhash, lbl, &val)) {
1981 IF_DEBUG(linker, debugBelch("lookupSymbol: symbol not found\n"));
1982 # if defined(OBJFORMAT_ELF)
1983 return internal_dlsym(dl_prog_handle, lbl);
1984 # elif defined(OBJFORMAT_MACHO)
1985 # if HAVE_DLFCN_H
1986 /* On OS X 10.3 and later, we use dlsym instead of the old legacy
1987 interface.
1988
1989 HACK: On OS X, all symbols are prefixed with an underscore.
1990 However, dlsym wants us to omit the leading underscore from the
1991 symbol name -- the dlsym routine puts it back on before searching
1992 for the symbol. For now, we simply strip it off here (and ONLY
1993 here).
1994 */
1995 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s with dlsym\n", lbl));
1996 ASSERT(lbl[0] == '_');
1997 return internal_dlsym(dl_prog_handle, lbl + 1);
1998 # else
1999 if (NSIsSymbolNameDefined(lbl)) {
2000 NSSymbol symbol = NSLookupAndBindSymbol(lbl);
2001 return NSAddressOfSymbol(symbol);
2002 } else {
2003 return NULL;
2004 }
2005 # endif /* HAVE_DLFCN_H */
2006 # elif defined(OBJFORMAT_PEi386)
2007 void* sym;
2008
2009 sym = lookupSymbolInDLLs((unsigned char*)lbl);
2010 if (sym != NULL) { return sym; };
2011
2012 // Also try looking up the symbol without the @N suffix. Some
2013 // DLLs have the suffixes on their symbols, some don't.
2014 zapTrailingAtSign ( (unsigned char*)lbl );
2015 sym = lookupSymbolInDLLs((unsigned char*)lbl);
2016 if (sym != NULL) { return sym; };
2017 return NULL;
2018
2019 # else
2020 ASSERT(2+2 == 5);
2021 return NULL;
2022 # endif
2023 } else {
2024 IF_DEBUG(linker, debugBelch("lookupSymbol: value of %s is %p\n", lbl, val));
2025 return val;
2026 }
2027 }
2028
2029 /* -----------------------------------------------------------------------------
2030 Create a StablePtr for a foreign export. This is normally called by
2031 a C function with __attribute__((constructor)), which is generated
2032 by GHC and linked into the module.
2033
2034 If the object code is being loaded dynamically, then we remember
2035 which StablePtrs were allocated by the constructors and free them
2036 again in unloadObj().
2037 -------------------------------------------------------------------------- */
2038
2039 static ObjectCode *loading_obj = NULL;
2040
2041 StgStablePtr foreignExportStablePtr (StgPtr p)
2042 {
2043 ForeignExportStablePtr *fe_sptr;
2044 StgStablePtr *sptr;
2045
2046 sptr = getStablePtr(p);
2047
2048 if (loading_obj != NULL) {
2049 fe_sptr = stgMallocBytes(sizeof(ForeignExportStablePtr),
2050 "foreignExportStablePtr");
2051 fe_sptr->stable_ptr = sptr;
2052 fe_sptr->next = loading_obj->stable_ptrs;
2053 loading_obj->stable_ptrs = fe_sptr;
2054 }
2055
2056 return sptr;
2057 }
2058
2059
2060 /* -----------------------------------------------------------------------------
2061 * Debugging aid: look in GHCi's object symbol tables for symbols
2062 * within DELTA bytes of the specified address, and show their names.
2063 */
2064 #ifdef DEBUG
2065 void ghci_enquire ( char* addr );
2066
2067 void ghci_enquire ( char* addr )
2068 {
2069 int i;
2070 char* sym;
2071 char* a;
2072 const int DELTA = 64;
2073 ObjectCode* oc;
2074
2075 initLinker();
2076
2077 for (oc = objects; oc; oc = oc->next) {
2078 for (i = 0; i < oc->n_symbols; i++) {
2079 sym = oc->symbols[i];
2080 if (sym == NULL) continue;
2081 a = NULL;
2082 if (a == NULL) {
2083 ghciLookupSymbolTable(symhash, sym, (void **)&a);
2084 }
2085 if (a == NULL) {
2086 // debugBelch("ghci_enquire: can't find %s\n", sym);
2087 }
2088 else if (addr-DELTA <= a && a <= addr+DELTA) {
2089 debugBelch("%p + %3d == `%s'\n", addr, (int)(a - addr), sym);
2090 }
2091 }
2092 }
2093 }
2094 #endif
2095
2096 #ifdef USE_MMAP
2097 #define ROUND_UP(x,size) ((x + size - 1) & ~(size - 1))
2098
2099 static void *
2100 mmapForLinker (size_t bytes, nat flags, int fd)
2101 {
2102 void *map_addr = NULL;
2103 void *result;
2104 int pagesize, size;
2105 static nat fixed = 0;
2106
2107 IF_DEBUG(linker, debugBelch("mmapForLinker: start\n"));
2108 pagesize = getpagesize();
2109 size = ROUND_UP(bytes, pagesize);
2110
2111 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2112 mmap_again:
2113
2114 if (mmap_32bit_base != 0) {
2115 map_addr = mmap_32bit_base;
2116 }
2117 #endif
2118
2119 IF_DEBUG(linker, debugBelch("mmapForLinker: \tprotection %#0x\n", PROT_EXEC | PROT_READ | PROT_WRITE));
2120 IF_DEBUG(linker, debugBelch("mmapForLinker: \tflags %#0x\n", MAP_PRIVATE | TRY_MAP_32BIT | fixed | flags));
2121 result = mmap(map_addr, size, PROT_EXEC|PROT_READ|PROT_WRITE,
2122 MAP_PRIVATE|TRY_MAP_32BIT|fixed|flags, fd, 0);
2123
2124 if (result == MAP_FAILED) {
2125 sysErrorBelch("mmap %" FMT_Word " bytes at %p",(W_)size,map_addr);
2126 errorBelch("Try specifying an address with +RTS -xm<addr> -RTS");
2127 stg_exit(EXIT_FAILURE);
2128 }
2129
2130 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2131 if (mmap_32bit_base != 0) {
2132 if (result == map_addr) {
2133 mmap_32bit_base = (StgWord8*)map_addr + size;
2134 } else {
2135 if ((W_)result > 0x80000000) {
2136 // oops, we were given memory over 2Gb
2137 #if defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS)
2138 // Some platforms require MAP_FIXED. This is normally
2139 // a bad idea, because MAP_FIXED will overwrite
2140 // existing mappings.
2141 munmap(result,size);
2142 fixed = MAP_FIXED;
2143 goto mmap_again;
2144 #else
2145 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);
2146 #endif
2147 } else {
2148 // hmm, we were given memory somewhere else, but it's
2149 // still under 2Gb so we can use it. Next time, ask
2150 // for memory right after the place we just got some
2151 mmap_32bit_base = (StgWord8*)result + size;
2152 }
2153 }
2154 } else {
2155 if ((W_)result > 0x80000000) {
2156 // oops, we were given memory over 2Gb
2157 // ... try allocating memory somewhere else?;
2158 debugTrace(DEBUG_linker,"MAP_32BIT didn't work; gave us %lu bytes at 0x%p", bytes, result);
2159 munmap(result, size);
2160
2161 // Set a base address and try again... (guess: 1Gb)
2162 mmap_32bit_base = (void*)0x40000000;
2163 goto mmap_again;
2164 }
2165 }
2166 #endif
2167
2168 IF_DEBUG(linker, debugBelch("mmapForLinker: mapped %" FMT_Word " bytes starting at %p\n", (W_)size, result));
2169 IF_DEBUG(linker, debugBelch("mmapForLinker: done\n"));
2170 return result;
2171 }
2172 #endif // USE_MMAP
2173
2174
2175 void freeObjectCode (ObjectCode *oc)
2176 {
2177 #ifdef USE_MMAP
2178 int pagesize, size, r;
2179
2180 pagesize = getpagesize();
2181 size = ROUND_UP(oc->fileSize, pagesize);
2182
2183 r = munmap(oc->image, size);
2184 if (r == -1) {
2185 sysErrorBelch("munmap");
2186 }
2187
2188 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2189 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2190 if (!USE_CONTIGUOUS_MMAP)
2191 {
2192 munmap(oc->symbol_extras,
2193 ROUND_UP(sizeof(SymbolExtra) * oc->n_symbol_extras, pagesize));
2194 }
2195 #endif
2196 #endif
2197
2198 #else
2199
2200 #ifndef mingw32_HOST_OS
2201 stgFree(oc->image);
2202 #else
2203 VirtualFree(oc->image - PEi386_IMAGE_OFFSET, 0, MEM_RELEASE);
2204
2205 IndirectAddr *ia, *ia_next;
2206 ia = indirects;
2207 while (ia != NULL) {
2208 ia_next = ia->next;
2209 stgFree(ia);
2210 ia = ia_next;
2211 }
2212
2213 #endif
2214
2215 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2216 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2217 stgFree(oc->symbol_extras);
2218 #endif
2219 #endif
2220
2221 #endif
2222
2223 stgFree(oc->fileName);
2224 stgFree(oc->archiveMemberName);
2225 stgFree(oc);
2226 }
2227
2228
2229 static ObjectCode*
2230 mkOc( pathchar *path, char *image, int imageSize,
2231 char *archiveMemberName
2232 #ifndef USE_MMAP
2233 #ifdef darwin_HOST_OS
2234 , int misalignment
2235 #endif
2236 #endif
2237 ) {
2238 ObjectCode* oc;
2239
2240 IF_DEBUG(linker, debugBelch("mkOc: start\n"));
2241 oc = stgMallocBytes(sizeof(ObjectCode), "loadArchive(oc)");
2242
2243 # if defined(OBJFORMAT_ELF)
2244 oc->formatName = "ELF";
2245 # elif defined(OBJFORMAT_PEi386)
2246 oc->formatName = "PEi386";
2247 # elif defined(OBJFORMAT_MACHO)
2248 oc->formatName = "Mach-O";
2249 # else
2250 stgFree(oc);
2251 barf("loadObj: not implemented on this platform");
2252 # endif
2253
2254 oc->image = image;
2255 oc->fileName = pathdup(path);
2256
2257 if (archiveMemberName) {
2258 oc->archiveMemberName = stgMallocBytes( strlen(archiveMemberName)+1, "loadObj" );
2259 strcpy(oc->archiveMemberName, archiveMemberName);
2260 }
2261 else {
2262 oc->archiveMemberName = NULL;
2263 }
2264
2265 oc->fileSize = imageSize;
2266 oc->symbols = NULL;
2267 oc->sections = NULL;
2268 oc->proddables = NULL;
2269 oc->stable_ptrs = NULL;
2270
2271 #ifndef USE_MMAP
2272 #ifdef darwin_HOST_OS
2273 oc->misalignment = misalignment;
2274 #endif
2275 #endif
2276
2277 /* chain it onto the list of objects */
2278 oc->next = objects;
2279 objects = oc;
2280
2281 IF_DEBUG(linker, debugBelch("mkOc: done\n"));
2282 return oc;
2283 }
2284
2285 HsInt
2286 loadArchive( pathchar *path )
2287 {
2288 ObjectCode* oc;
2289 char *image;
2290 int memberSize;
2291 FILE *f;
2292 int n;
2293 size_t thisFileNameSize;
2294 char *fileName;
2295 size_t fileNameSize;
2296 int isObject, isGnuIndex;
2297 char tmp[20];
2298 char *gnuFileIndex;
2299 int gnuFileIndexSize;
2300 #if defined(darwin_HOST_OS)
2301 int i;
2302 uint32_t nfat_arch, nfat_offset, cputype, cpusubtype;
2303 #if defined(i386_HOST_ARCH)
2304 const uint32_t mycputype = CPU_TYPE_X86;
2305 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_ALL;
2306 #elif defined(x86_64_HOST_ARCH)
2307 const uint32_t mycputype = CPU_TYPE_X86_64;
2308 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_64_ALL;
2309 #elif defined(powerpc_HOST_ARCH)
2310 const uint32_t mycputype = CPU_TYPE_POWERPC;
2311 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2312 #elif defined(powerpc64_HOST_ARCH)
2313 const uint32_t mycputype = CPU_TYPE_POWERPC64;
2314 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2315 #else
2316 #error Unknown Darwin architecture
2317 #endif
2318 #if !defined(USE_MMAP)
2319 int misalignment;
2320 #endif
2321 #endif
2322
2323 IF_DEBUG(linker, debugBelch("loadArchive: start\n"));
2324 IF_DEBUG(linker, debugBelch("loadArchive: Loading archive `%" PATH_FMT" '\n", path));
2325
2326 gnuFileIndex = NULL;
2327 gnuFileIndexSize = 0;
2328
2329 fileNameSize = 32;
2330 fileName = stgMallocBytes(fileNameSize, "loadArchive(fileName)");
2331
2332 f = pathopen(path, WSTR("rb"));
2333 if (!f)
2334 barf("loadObj: can't read `%s'", path);
2335
2336 /* Check if this is an archive by looking for the magic "!<arch>\n"
2337 * string. Usually, if this fails, we barf and quit. On Darwin however,
2338 * we may have a fat archive, which contains archives for more than
2339 * one architecture. Fat archives start with the magic number 0xcafebabe,
2340 * always stored big endian. If we find a fat_header, we scan through
2341 * the fat_arch structs, searching through for one for our host
2342 * architecture. If a matching struct is found, we read the offset
2343 * of our archive data (nfat_offset) and seek forward nfat_offset bytes
2344 * from the start of the file.
2345 *
2346 * A subtlety is that all of the members of the fat_header and fat_arch
2347 * structs are stored big endian, so we need to call byte order
2348 * conversion functions.
2349 *
2350 * If we find the appropriate architecture in a fat archive, we gobble
2351 * its magic "!<arch>\n" string and continue processing just as if
2352 * we had a single architecture archive.
2353 */
2354
2355 n = fread ( tmp, 1, 8, f );
2356 if (n != 8)
2357 barf("loadArchive: Failed reading header from `%s'", path);
2358 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2359
2360 #if defined(darwin_HOST_OS)
2361 /* Not a standard archive, look for a fat archive magic number: */
2362 if (ntohl(*(uint32_t *)tmp) == FAT_MAGIC) {
2363 nfat_arch = ntohl(*(uint32_t *)(tmp + 4));
2364 IF_DEBUG(linker, debugBelch("loadArchive: found a fat archive containing %d architectures\n", nfat_arch));
2365 nfat_offset = 0;
2366
2367 for (i = 0; i < (int)nfat_arch; i++) {
2368 /* search for the right arch */
2369 n = fread( tmp, 1, 20, f );
2370 if (n != 8)
2371 barf("loadArchive: Failed reading arch from `%s'", path);
2372 cputype = ntohl(*(uint32_t *)tmp);
2373 cpusubtype = ntohl(*(uint32_t *)(tmp + 4));
2374
2375 if (cputype == mycputype && cpusubtype == mycpusubtype) {
2376 IF_DEBUG(linker, debugBelch("loadArchive: found my archive in a fat archive\n"));
2377 nfat_offset = ntohl(*(uint32_t *)(tmp + 8));
2378 break;
2379 }
2380 }
2381
2382 if (nfat_offset == 0) {
2383 barf ("loadArchive: searched %d architectures, but no host arch found", (int)nfat_arch);
2384 }
2385 else {
2386 n = fseek( f, nfat_offset, SEEK_SET );
2387 if (n != 0)
2388 barf("loadArchive: Failed to seek to arch in `%s'", path);
2389 n = fread ( tmp, 1, 8, f );
2390 if (n != 8)
2391 barf("loadArchive: Failed reading header from `%s'", path);
2392 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2393 barf("loadArchive: couldn't find archive in `%s' at offset %d", path, nfat_offset);
2394 }
2395 }
2396 }
2397 else {
2398 barf("loadArchive: Neither an archive, nor a fat archive: `%s'", path);
2399 }
2400
2401 #else
2402 barf("loadArchive: Not an archive: `%s'", path);
2403 #endif
2404 }
2405
2406 IF_DEBUG(linker, debugBelch("loadArchive: loading archive contents\n"));
2407
2408 while(1) {
2409 n = fread ( fileName, 1, 16, f );
2410 if (n != 16) {
2411 if (feof(f)) {
2412 IF_DEBUG(linker, debugBelch("loadArchive: EOF while reading from '%" PATH_FMT "'\n", path));
2413 break;
2414 }
2415 else {
2416 barf("loadArchive: Failed reading file name from `%s'", path);
2417 }
2418 }
2419
2420 #if defined(darwin_HOST_OS)
2421 if (strncmp(fileName, "!<arch>\n", 8) == 0) {
2422 IF_DEBUG(linker, debugBelch("loadArchive: found the start of another archive, breaking\n"));
2423 break;
2424 }
2425 #endif
2426
2427 n = fread ( tmp, 1, 12, f );
2428 if (n != 12)
2429 barf("loadArchive: Failed reading mod time from `%s'", path);
2430 n = fread ( tmp, 1, 6, f );
2431 if (n != 6)
2432 barf("loadArchive: Failed reading owner from `%s'", path);
2433 n = fread ( tmp, 1, 6, f );
2434 if (n != 6)
2435 barf("loadArchive: Failed reading group from `%s'", path);
2436 n = fread ( tmp, 1, 8, f );
2437 if (n != 8)
2438 barf("loadArchive: Failed reading mode from `%s'", path);
2439 n = fread ( tmp, 1, 10, f );
2440 if (n != 10)
2441 barf("loadArchive: Failed reading size from `%s'", path);
2442 tmp[10] = '\0';
2443 for (n = 0; isdigit(tmp[n]); n++);
2444 tmp[n] = '\0';
2445 memberSize = atoi(tmp);
2446
2447 IF_DEBUG(linker, debugBelch("loadArchive: size of this archive member is %d\n", memberSize));
2448 n = fread ( tmp, 1, 2, f );
2449 if (n != 2)
2450 barf("loadArchive: Failed reading magic from `%s'", path);
2451 if (strncmp(tmp, "\x60\x0A", 2) != 0)
2452 barf("loadArchive: Failed reading magic from `%s' at %ld. Got %c%c",
2453 path, ftell(f), tmp[0], tmp[1]);
2454
2455 isGnuIndex = 0;
2456 /* Check for BSD-variant large filenames */
2457 if (0 == strncmp(fileName, "#1/", 3)) {
2458 fileName[16] = '\0';
2459 if (isdigit(fileName[3])) {
2460 for (n = 4; isdigit(fileName[n]); n++);
2461 fileName[n] = '\0';
2462 thisFileNameSize = atoi(fileName + 3);
2463 memberSize -= thisFileNameSize;
2464 if (thisFileNameSize >= fileNameSize) {
2465 /* Double it to avoid potentially continually
2466 increasing it by 1 */
2467 fileNameSize = thisFileNameSize * 2;
2468 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2469 }
2470 n = fread ( fileName, 1, thisFileNameSize, f );
2471 if (n != (int)thisFileNameSize) {
2472 barf("loadArchive: Failed reading filename from `%s'",
2473 path);
2474 }
2475 fileName[thisFileNameSize] = 0;
2476
2477 /* On OS X at least, thisFileNameSize is the size of the
2478 fileName field, not the length of the fileName
2479 itself. */
2480 thisFileNameSize = strlen(fileName);
2481 }
2482 else {
2483 barf("loadArchive: BSD-variant filename size not found while reading filename from `%s'", path);
2484 }
2485 }
2486 /* Check for GNU file index file */
2487 else if (0 == strncmp(fileName, "//", 2)) {
2488 fileName[0] = '\0';
2489 thisFileNameSize = 0;
2490 isGnuIndex = 1;
2491 }
2492 /* Check for a file in the GNU file index */
2493 else if (fileName[0] == '/') {
2494 if (isdigit(fileName[1])) {
2495 int i;
2496
2497 for (n = 2; isdigit(fileName[n]); n++);
2498 fileName[n] = '\0';
2499 n = atoi(fileName + 1);
2500
2501 if (gnuFileIndex == NULL) {
2502 barf("loadArchive: GNU-variant filename without an index while reading from `%s'", path);
2503 }
2504 if (n < 0 || n > gnuFileIndexSize) {
2505 barf("loadArchive: GNU-variant filename offset %d out of range [0..%d] while reading filename from `%s'", n, gnuFileIndexSize, path);
2506 }
2507 if (n != 0 && gnuFileIndex[n - 1] != '\n') {
2508 barf("loadArchive: GNU-variant filename offset %d invalid (range [0..%d]) while reading filename from `%s'", n, gnuFileIndexSize, path);
2509 }
2510 for (i = n; gnuFileIndex[i] != '/'; i++);
2511 thisFileNameSize = i - n;
2512 if (thisFileNameSize >= fileNameSize) {
2513 /* Double it to avoid potentially continually
2514 increasing it by 1 */
2515 fileNameSize = thisFileNameSize * 2;
2516 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2517 }
2518 memcpy(fileName, gnuFileIndex + n, thisFileNameSize);
2519 fileName[thisFileNameSize] = '\0';
2520 }
2521 else if (fileName[1] == ' ') {
2522 fileName[0] = '\0';
2523 thisFileNameSize = 0;
2524 }
2525 else {
2526 barf("loadArchive: GNU-variant filename offset not found while reading filename from `%s'", path);
2527 }
2528 }
2529 /* Finally, the case where the filename field actually contains
2530 the filename */
2531 else {
2532 /* GNU ar terminates filenames with a '/', this allowing
2533 spaces in filenames. So first look to see if there is a
2534 terminating '/'. */
2535 for (thisFileNameSize = 0;
2536 thisFileNameSize < 16;
2537 thisFileNameSize++) {
2538 if (fileName[thisFileNameSize] == '/') {
2539 fileName[thisFileNameSize] = '\0';
2540 break;
2541 }
2542 }
2543 /* If we didn't find a '/', then a space teminates the
2544 filename. Note that if we don't find one, then
2545 thisFileNameSize ends up as 16, and we already have the
2546 '\0' at the end. */
2547 if (thisFileNameSize == 16) {
2548 for (thisFileNameSize = 0;
2549 thisFileNameSize < 16;
2550 thisFileNameSize++) {
2551 if (fileName[thisFileNameSize] == ' ') {
2552 fileName[thisFileNameSize] = '\0';
2553 break;
2554 }
2555 }
2556 }
2557 }
2558
2559 IF_DEBUG(linker,
2560 debugBelch("loadArchive: Found member file `%s'\n", fileName));
2561
2562 isObject = thisFileNameSize >= 2
2563 && fileName[thisFileNameSize - 2] == '.'
2564 && fileName[thisFileNameSize - 1] == 'o';
2565
2566 IF_DEBUG(linker, debugBelch("loadArchive: \tthisFileNameSize = %d\n", (int)thisFileNameSize));
2567 IF_DEBUG(linker, debugBelch("loadArchive: \tisObject = %d\n", isObject));
2568
2569 if (isObject) {
2570 char *archiveMemberName;
2571
2572 IF_DEBUG(linker, debugBelch("loadArchive: Member is an object file...loading...\n"));
2573
2574 /* We can't mmap from the archive directly, as object
2575 files need to be 8-byte aligned but files in .ar
2576 archives are 2-byte aligned. When possible we use mmap
2577 to get some anonymous memory, as on 64-bit platforms if
2578 we use malloc then we can be given memory above 2^32.
2579 In the mmap case we're probably wasting lots of space;
2580 we could do better. */
2581 #if defined(USE_MMAP)
2582 image = mmapForLinker(memberSize, MAP_ANONYMOUS, -1);
2583 #elif defined(mingw32_HOST_OS)
2584 // TODO: We would like to use allocateExec here, but allocateExec
2585 // cannot currently allocate blocks large enough.
2586 image = allocateImageAndTrampolines(
2587 #if defined(x86_64_HOST_ARCH)
2588 f, path, fileName,
2589 #endif
2590 memberSize);
2591 #elif defined(darwin_HOST_OS)
2592 /* See loadObj() */
2593 misalignment = machoGetMisalignment(f);
2594 image = stgMallocBytes(memberSize + misalignment, "loadArchive(image)");
2595 image += misalignment;
2596 #else
2597 image = stgMallocBytes(memberSize, "loadArchive(image)");
2598 #endif
2599 n = fread ( image, 1, memberSize, f );
2600 if (n != memberSize) {
2601 barf("loadArchive: error whilst reading `%s'", path);
2602 }
2603
2604 archiveMemberName = stgMallocBytes(pathlen(path) + thisFileNameSize + 3,
2605 "loadArchive(file)");
2606 sprintf(archiveMemberName, "%" PATH_FMT "(%.*s)",
2607 path, (int)thisFileNameSize, fileName);
2608
2609 oc = mkOc(path, image, memberSize, archiveMemberName
2610 #ifndef USE_MMAP
2611 #ifdef darwin_HOST_OS
2612 , misalignment
2613 #endif
2614 #endif
2615 );
2616
2617 stgFree(archiveMemberName);
2618
2619 if (0 == loadOc(oc)) {
2620 stgFree(fileName);
2621 return 0;
2622 }
2623 }
2624 else if (isGnuIndex) {
2625 if (gnuFileIndex != NULL) {
2626 barf("loadArchive: GNU-variant index found, but already have an index, while reading filename from `%s'", path);
2627 }
2628 IF_DEBUG(linker, debugBelch("loadArchive: Found GNU-variant file index\n"));
2629 #ifdef USE_MMAP
2630 gnuFileIndex = mmapForLinker(memberSize + 1, MAP_ANONYMOUS, -1);
2631 #else
2632 gnuFileIndex = stgMallocBytes(memberSize + 1, "loadArchive(image)");
2633 #endif
2634 n = fread ( gnuFileIndex, 1, memberSize, f );
2635 if (n != memberSize) {
2636 barf("loadArchive: error whilst reading `%s'", path);
2637 }
2638 gnuFileIndex[memberSize] = '/';
2639 gnuFileIndexSize = memberSize;
2640 }
2641 else {
2642 IF_DEBUG(linker, debugBelch("loadArchive: '%s' does not appear to be an object file\n", fileName));
2643 n = fseek(f, memberSize, SEEK_CUR);
2644 if (n != 0)
2645 barf("loadArchive: error whilst seeking by %d in `%s'",
2646 memberSize, path);
2647 }
2648
2649 /* .ar files are 2-byte aligned */
2650 if (memberSize % 2) {
2651 IF_DEBUG(linker, debugBelch("loadArchive: trying to read one pad byte\n"));
2652 n = fread ( tmp, 1, 1, f );
2653 if (n != 1) {
2654 if (feof(f)) {
2655 IF_DEBUG(linker, debugBelch("loadArchive: found EOF while reading one pad byte\n"));
2656 break;
2657 }
2658 else {
2659 barf("loadArchive: Failed reading padding from `%s'", path);
2660 }
2661 }
2662 IF_DEBUG(linker, debugBelch("loadArchive: successfully read one pad byte\n"));
2663 }
2664 IF_DEBUG(linker, debugBelch("loadArchive: reached end of archive loading while loop\n"));
2665 }
2666
2667 fclose(f);
2668
2669 stgFree(fileName);
2670 if (gnuFileIndex != NULL) {
2671 #ifdef USE_MMAP
2672 munmap(gnuFileIndex, gnuFileIndexSize + 1);
2673 #else
2674 stgFree(gnuFileIndex);
2675 #endif
2676 }
2677
2678 IF_DEBUG(linker, debugBelch("loadArchive: done\n"));
2679 return 1;
2680 }
2681
2682 /* -----------------------------------------------------------------------------
2683 * Load an obj (populate the global symbol table, but don't resolve yet)
2684 *
2685 * Returns: 1 if ok, 0 on error.
2686 */
2687 HsInt
2688 loadObj( pathchar *path )
2689 {
2690 ObjectCode* oc;
2691 char *image;
2692 int fileSize;
2693 struct_stat st;
2694 int r;
2695 #ifdef USE_MMAP
2696 int fd;
2697 #else
2698 FILE *f;
2699 # if defined(darwin_HOST_OS)
2700 int misalignment;
2701 # endif
2702 #endif
2703 IF_DEBUG(linker, debugBelch("loadObj %" PATH_FMT "\n", path));
2704
2705 initLinker();
2706
2707 /* debugBelch("loadObj %s\n", path ); */
2708
2709 /* Check that we haven't already loaded this object.
2710 Ignore requests to load multiple times */
2711 {
2712 ObjectCode *o;
2713 int is_dup = 0;
2714 for (o = objects; o; o = o->next) {
2715 if (0 == pathcmp(o->fileName, path)) {
2716 is_dup = 1;
2717 break; /* don't need to search further */
2718 }
2719 }
2720 if (is_dup) {
2721 IF_DEBUG(linker, debugBelch(
2722 "GHCi runtime linker: warning: looks like you're trying to load the\n"
2723 "same object file twice:\n"
2724 " %" PATH_FMT "\n"
2725 "GHCi will ignore this, but be warned.\n"
2726 , path));
2727 return 1; /* success */
2728 }
2729 }
2730
2731 r = pathstat(path, &st);
2732 if (r == -1) {
2733 IF_DEBUG(linker, debugBelch("File doesn't exist\n"));
2734 return 0;
2735 }
2736
2737 fileSize = st.st_size;
2738
2739 #ifdef USE_MMAP
2740 /* On many architectures malloc'd memory isn't executable, so we need to use mmap. */
2741
2742 #if defined(openbsd_HOST_OS)
2743 fd = open(path, O_RDONLY, S_IRUSR);
2744 #else
2745 fd = open(path, O_RDONLY);
2746 #endif
2747 if (fd == -1)
2748 barf("loadObj: can't open `%s'", path);
2749
2750 image = mmapForLinker(fileSize, 0, fd);
2751
2752 close(fd);
2753
2754 #else /* !USE_MMAP */
2755 /* load the image into memory */
2756 f = pathopen(path, WSTR("rb"));
2757 if (!f)
2758 barf("loadObj: can't read `%" PATH_FMT "'", path);
2759
2760 # if defined(mingw32_HOST_OS)
2761 // TODO: We would like to use allocateExec here, but allocateExec
2762 // cannot currently allocate blocks large enough.
2763 image = allocateImageAndTrampolines(
2764 #if defined(x86_64_HOST_ARCH)
2765 f, path, "itself",
2766 #endif
2767 fileSize);
2768 # elif defined(darwin_HOST_OS)
2769 // In a Mach-O .o file, all sections can and will be misaligned
2770 // if the total size of the headers is not a multiple of the
2771 // desired alignment. This is fine for .o files that only serve
2772 // as input for the static linker, but it's not fine for us,
2773 // as SSE (used by gcc for floating point) and Altivec require
2774 // 16-byte alignment.
2775 // We calculate the correct alignment from the header before
2776 // reading the file, and then we misalign image on purpose so
2777 // that the actual sections end up aligned again.
2778 misalignment = machoGetMisalignment(f);
2779 image = stgMallocBytes(fileSize + misalignment, "loadObj(image)");
2780 image += misalignment;
2781 # else
2782 image = stgMallocBytes(fileSize, "loadObj(image)");
2783 # endif
2784
2785 {
2786 int n;
2787 n = fread ( image, 1, fileSize, f );
2788 if (n != fileSize)
2789 barf("loadObj: error whilst reading `%s'", path);
2790 }
2791 fclose(f);
2792 #endif /* USE_MMAP */
2793
2794 oc = mkOc(path, image, fileSize, NULL
2795 #ifndef USE_MMAP
2796 #ifdef darwin_HOST_OS
2797 , misalignment
2798 #endif
2799 #endif
2800 );
2801
2802 return loadOc(oc);
2803 }
2804
2805 static HsInt
2806 loadOc( ObjectCode* oc ) {
2807 int r;
2808
2809 IF_DEBUG(linker, debugBelch("loadOc: start\n"));
2810
2811 # if defined(OBJFORMAT_MACHO) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH))
2812 r = ocAllocateSymbolExtras_MachO ( oc );
2813 if (!r) {
2814 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_MachO failed\n"));
2815 return r;
2816 }
2817 # elif defined(OBJFORMAT_ELF) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH))
2818 r = ocAllocateSymbolExtras_ELF ( oc );
2819 if (!r) {
2820 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_ELF failed\n"));
2821 return r;
2822 }
2823 # elif defined(OBJFORMAT_PEi386) && defined(x86_64_HOST_ARCH)
2824 ocAllocateSymbolExtras_PEi386 ( oc );
2825 #endif
2826
2827 /* verify the in-memory image */
2828 # if defined(OBJFORMAT_ELF)
2829 r = ocVerifyImage_ELF ( oc );
2830 # elif defined(OBJFORMAT_PEi386)
2831 r = ocVerifyImage_PEi386 ( oc );
2832 # elif defined(OBJFORMAT_MACHO)
2833 r = ocVerifyImage_MachO ( oc );
2834 # else
2835 barf("loadObj: no verify method");
2836 # endif
2837 if (!r) {
2838 IF_DEBUG(linker, debugBelch("loadOc: ocVerifyImage_* failed\n"));
2839 return r;
2840 }
2841
2842 /* build the symbol list for this image */
2843 # if defined(OBJFORMAT_ELF)
2844 r = ocGetNames_ELF ( oc );
2845 # elif defined(OBJFORMAT_PEi386)
2846 r = ocGetNames_PEi386 ( oc );
2847 # elif defined(OBJFORMAT_MACHO)
2848 r = ocGetNames_MachO ( oc );
2849 # else
2850 barf("loadObj: no getNames method");
2851 # endif
2852 if (!r) {
2853 IF_DEBUG(linker, debugBelch("loadOc: ocGetNames_* failed\n"));
2854 return r;
2855 }
2856
2857 /* loaded, but not resolved yet */
2858 oc->status = OBJECT_LOADED;
2859 IF_DEBUG(linker, debugBelch("loadOc: done.\n"));
2860
2861 return 1;
2862 }
2863
2864 /* -----------------------------------------------------------------------------
2865 * resolve all the currently unlinked objects in memory
2866 *
2867 * Returns: 1 if ok, 0 on error.
2868 */
2869 HsInt
2870 resolveObjs( void )
2871 {
2872 ObjectCode *oc;
2873 int r;
2874
2875 IF_DEBUG(linker, debugBelch("resolveObjs: start\n"));
2876 initLinker();
2877
2878 for (oc = objects; oc; oc = oc->next) {
2879 if (oc->status != OBJECT_RESOLVED) {
2880 # if defined(OBJFORMAT_ELF)
2881 r = ocResolve_ELF ( oc );
2882 # elif defined(OBJFORMAT_PEi386)
2883 r = ocResolve_PEi386 ( oc );
2884 # elif defined(OBJFORMAT_MACHO)
2885 r = ocResolve_MachO ( oc );
2886 # else
2887 barf("resolveObjs: not implemented on this platform");
2888 # endif
2889 if (!r) { return r; }
2890
2891 // run init/init_array/ctors/mod_init_func
2892
2893 loading_obj = oc; // tells foreignExportStablePtr what to do
2894 #if defined(OBJFORMAT_ELF)
2895 r = ocRunInit_ELF ( oc );
2896 #elif defined(OBJFORMAT_PEi386)
2897 r = ocRunInit_PEi386 ( oc );
2898 #elif defined(OBJFORMAT_MACHO)
2899 r = ocRunInit_MachO ( oc );
2900 #else
2901 barf("resolveObjs: initializers not implemented on this platform");
2902 #endif
2903 loading_obj = NULL;
2904
2905 if (!r) { return r; }
2906
2907 oc->status = OBJECT_RESOLVED;
2908 }
2909 }
2910 IF_DEBUG(linker, debugBelch("resolveObjs: done\n"));
2911 return 1;
2912 }
2913
2914 /* -----------------------------------------------------------------------------
2915 * delete an object from the pool
2916 */
2917 HsInt
2918 unloadObj( pathchar *path )
2919 {
2920 ObjectCode *oc, *prev, *next;
2921 HsBool unloadedAnyObj = HS_BOOL_FALSE;
2922
2923 ASSERT(symhash != NULL);
2924 ASSERT(objects != NULL);
2925
2926 initLinker();
2927
2928 IF_DEBUG(linker, debugBelch("unloadObj: %" PATH_FMT "\n", path));
2929
2930 prev = NULL;
2931 for (oc = objects; oc; prev = oc, oc = next) {
2932 next = oc->next;
2933
2934 if (!pathcmp(oc->fileName,path)) {
2935
2936 /* Remove all the mappings for the symbols within this
2937 * object..
2938 */
2939 {
2940 int i;
2941 for (i = 0; i < oc->n_symbols; i++) {
2942 if (oc->symbols[i] != NULL) {
2943 ghciRemoveSymbolTable(symhash, oc->symbols[i], oc);
2944 }
2945 }
2946 }
2947
2948 if (prev == NULL) {
2949 objects = oc->next;
2950 } else {
2951 prev->next = oc->next;
2952 }
2953 oc->next = unloaded_objects;
2954 unloaded_objects = oc;
2955
2956 // The data itself and a few other bits (oc->fileName,
2957 // oc->archiveMemberName) are kept until freeObjectCode(),
2958 // which is only called when it has been determined that
2959 // it is safe to unload the object.
2960 stgFree(oc->symbols);
2961
2962 {
2963 Section *s, *nexts;
2964
2965 for (s = oc->sections; s != NULL; s = nexts) {
2966 nexts = s->next;
2967 stgFree(s);
2968 }
2969 }
2970
2971 freeProddableBlocks(oc);
2972
2973 // Release any StablePtrs that were created when this
2974 // object module was initialized.
2975 {
2976 ForeignExportStablePtr *fe_ptr, *next;
2977
2978 for (fe_ptr = oc->stable_ptrs; fe_ptr != NULL; fe_ptr = next) {
2979 next = fe_ptr->next;
2980 freeStablePtr(fe_ptr->stable_ptr);
2981 stgFree(fe_ptr);
2982 }
2983 }
2984
2985 oc->status = OBJECT_UNLOADED;
2986
2987 /* This could be a member of an archive so continue
2988 * unloading other members. */
2989 unloadedAnyObj = HS_BOOL_TRUE;
2990 }
2991 }
2992
2993 if (unloadedAnyObj) {
2994 return 1;
2995 }
2996 else {
2997 errorBelch("unloadObj: can't find `%" PATH_FMT "' to unload", path);
2998 return 0;
2999 }
3000 }
3001
3002 /* -----------------------------------------------------------------------------
3003 * Sanity checking. For each ObjectCode, maintain a list of address ranges
3004 * which may be prodded during relocation, and abort if we try and write
3005 * outside any of these.
3006 */
3007 static void
3008 addProddableBlock ( ObjectCode* oc, void* start, int size )
3009 {
3010 ProddableBlock* pb
3011 = stgMallocBytes(sizeof(ProddableBlock), "addProddableBlock");
3012
3013 IF_DEBUG(linker, debugBelch("addProddableBlock: %p %p %d\n", oc, start, size));
3014 ASSERT(size > 0);
3015 pb->start = start;
3016 pb->size = size;
3017 pb->next = oc->proddables;
3018 oc->proddables = pb;
3019 }
3020
3021 static void
3022 checkProddableBlock (ObjectCode *oc, void *addr, size_t size )
3023 {
3024 ProddableBlock* pb;
3025
3026 for (pb = oc->proddables; pb != NULL; pb = pb->next) {
3027 char* s = (char*)(pb->start);
3028 char* e = s + pb->size;
3029 char* a = (char*)addr;
3030 if (a >= s && (a+size) <= e) return;
3031 }
3032 barf("checkProddableBlock: invalid fixup in runtime linker: %p", addr);
3033 }
3034
3035 static void freeProddableBlocks (ObjectCode *oc)
3036 {
3037 ProddableBlock *pb, *next;
3038
3039 for (pb = oc->proddables; pb != NULL; pb = next) {
3040 next = pb->next;
3041 stgFree(pb);
3042 }
3043 oc->proddables = NULL;
3044 }
3045
3046 /* -----------------------------------------------------------------------------
3047 * Section management.
3048 */
3049 static void
3050 addSection ( ObjectCode* oc, SectionKind kind,
3051 void* start, void* end )
3052 {
3053 Section* s = stgMallocBytes(sizeof(Section), "addSection");
3054 s->start = start;
3055 s->end = end;
3056 s->kind = kind;
3057 s->next = oc->sections;
3058 oc->sections = s;
3059
3060 IF_DEBUG(linker, debugBelch("addSection: %p-%p (size %lld), kind %d\n",
3061 start, ((char*)end)-1, ((long long)(size_t)end) - ((long long)(size_t)start) + 1, kind ));
3062 }
3063
3064
3065 /* --------------------------------------------------------------------------
3066 * Symbol Extras.
3067 * This is about allocating a small chunk of memory for every symbol in the
3068 * object file. We make sure that the SymboLExtras are always "in range" of
3069 * limited-range PC-relative instructions on various platforms by allocating
3070 * them right next to the object code itself.
3071 */
3072
3073 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3074 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3075
3076 /*
3077 ocAllocateSymbolExtras
3078
3079 Allocate additional space at the end of the object file image to make room
3080 for jump islands (powerpc, x86_64, arm) and GOT entries (x86_64).
3081
3082 PowerPC relative branch instructions have a 24 bit displacement field.
3083 As PPC code is always 4-byte-aligned, this yields a +-32MB range.
3084 If a particular imported symbol is outside this range, we have to redirect
3085 the jump to a short piece of new code that just loads the 32bit absolute
3086 address and jumps there.
3087 On x86_64, PC-relative jumps and PC-relative accesses to the GOT are limited
3088 to 32 bits (+-2GB).
3089
3090 This function just allocates space for one SymbolExtra for every
3091 undefined symbol in the object file. The code for the jump islands is
3092 filled in by makeSymbolExtra below.
3093 */
3094
3095 static int ocAllocateSymbolExtras( ObjectCode* oc, int count, int first )
3096 {
3097 #ifdef USE_MMAP
3098 int pagesize, n, m;
3099 #endif
3100 int aligned;
3101 #ifndef USE_MMAP
3102 int misalignment = 0;
3103 #ifdef darwin_HOST_OS
3104 misalignment = oc->misalignment;
3105 #endif
3106 #endif
3107
3108 if( count > 0 )
3109 {
3110 // round up to the nearest 4
3111 aligned = (oc->fileSize + 3) & ~3;
3112
3113 #ifdef USE_MMAP
3114 pagesize = getpagesize();
3115 n = ROUND_UP( oc->fileSize, pagesize );
3116 m = ROUND_UP( aligned + sizeof (SymbolExtra) * count, pagesize );
3117
3118 /* we try to use spare space at the end of the last page of the
3119 * image for the jump islands, but if there isn't enough space
3120 * then we have to map some (anonymously, remembering MAP_32BIT).
3121 */
3122 if( m > n ) // we need to allocate more pages
3123 {
3124 if (USE_CONTIGUOUS_MMAP)
3125 {
3126 /* Keep image and symbol_extras contiguous */
3127 void *new = mmapForLinker(n + (sizeof(SymbolExtra) * count),
3128 MAP_ANONYMOUS, -1);
3129 if (new)
3130 {
3131 memcpy(new, oc->image, oc->fileSize);
3132 munmap(oc->image, n);
3133 oc->image = new;
3134 oc->fileSize = n + (sizeof(SymbolExtra) * count);
3135 oc->symbol_extras = (SymbolExtra *) (oc->image + n);
3136 }
3137 else
3138 oc->symbol_extras = NULL;
3139 }
3140 else
3141 {
3142 oc->symbol_extras = mmapForLinker(sizeof(SymbolExtra) * count,
3143 MAP_ANONYMOUS, -1);
3144 }
3145 }
3146 else
3147 {
3148 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3149 }
3150 #else
3151 oc->image -= misalignment;
3152 oc->image = stgReallocBytes( oc->image,
3153 misalignment +
3154 aligned + sizeof (SymbolExtra) * count,
3155 "ocAllocateSymbolExtras" );
3156 oc->image += misalignment;
3157
3158 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3159 #endif /* USE_MMAP */
3160
3161 memset( oc->symbol_extras, 0, sizeof (SymbolExtra) * count );
3162 }
3163 else
3164 oc->symbol_extras = NULL;
3165
3166 oc->first_symbol_extra = first;
3167 oc->n_symbol_extras = count;
3168
3169 return 1;
3170 }
3171
3172 #endif
3173 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3174
3175 #if defined(arm_HOST_ARCH)
3176
3177 static void
3178 ocFlushInstructionCache( ObjectCode *oc )
3179 {
3180 // Object code
3181 __clear_cache(oc->image, oc->image + oc->fileSize);
3182 // Jump islands
3183 __clear_cache(oc->symbol_extras, &oc->symbol_extras[oc->n_symbol_extras]);
3184 }
3185
3186 #endif
3187
3188 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3189 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3190
3191 static SymbolExtra* makeSymbolExtra( ObjectCode* oc,
3192 unsigned long symbolNumber,
3193 unsigned long target )
3194 {
3195 SymbolExtra *extra;
3196
3197 ASSERT( symbolNumber >= oc->first_symbol_extra
3198 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3199
3200 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3201
3202 #ifdef powerpc_HOST_ARCH
3203 // lis r12, hi16(target)
3204 extra->jumpIsland.lis_r12 = 0x3d80;
3205 extra->jumpIsland.hi_addr = target >> 16;
3206
3207 // ori r12, r12, lo16(target)
3208 extra->jumpIsland.ori_r12_r12 = 0x618c;
3209 extra->jumpIsland.lo_addr = target & 0xffff;
3210
3211 // mtctr r12
3212 extra->jumpIsland.mtctr_r12 = 0x7d8903a6;
3213
3214 // bctr
3215 extra->jumpIsland.bctr = 0x4e800420;
3216 #endif
3217 #ifdef x86_64_HOST_ARCH
3218 // jmp *-14(%rip)
3219 static uint8_t jmp[] = { 0xFF, 0x25, 0xF2, 0xFF, 0xFF, 0xFF };
3220 extra->addr = target;
3221 memcpy(extra->jumpIsland, jmp, 6);
3222 #endif
3223
3224 return extra;
3225 }
3226
3227 #endif
3228 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3229
3230 #ifdef arm_HOST_ARCH
3231 static SymbolExtra* makeArmSymbolExtra( ObjectCode* oc,
3232 unsigned long symbolNumber,
3233 unsigned long target,
3234 int fromThumb,
3235 int toThumb )
3236 {
3237 SymbolExtra *extra;
3238
3239 ASSERT( symbolNumber >= oc->first_symbol_extra
3240 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3241
3242 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3243
3244 // Make sure instruction mode bit is set properly
3245 if (toThumb)
3246 target |= 1;
3247 else
3248 target &= ~1;
3249
3250 if (!fromThumb) {
3251 // In ARM encoding:
3252 // movw r12, #0
3253 // movt r12, #0
3254 // bx r12
3255 uint32_t code[] = { 0xe300c000, 0xe340c000, 0xe12fff1c };
3256
3257 // Patch lower half-word into movw
3258 code[0] |= ((target>>12) & 0xf) << 16;
3259 code[0] |= target & 0xfff;
3260 // Patch upper half-word into movt
3261 target >>= 16;
3262 code[1] |= ((target>>12) & 0xf) << 16;
3263 code[1] |= target & 0xfff;
3264
3265 memcpy(extra->jumpIsland, code, 12);
3266
3267 } else {
3268 // In Thumb encoding:
3269 // movw r12, #0
3270 // movt r12, #0
3271 // bx r12
3272 uint16_t code[] = { 0xf240, 0x0c00,
3273 0xf2c0, 0x0c00,
3274 0x4760 };
3275
3276 // Patch lower half-word into movw
3277 code[0] |= (target>>12) & 0xf;
3278 code[0] |= ((target>>11) & 0x1) << 10;
3279 code[1] |= ((target>>8) & 0x7) << 12;
3280 code[1] |= target & 0xff;
3281 // Patch upper half-word into movt
3282 target >>= 16;
3283 code[2] |= (target>>12) & 0xf;
3284 code[2] |= ((target>>11) & 0x1) << 10;
3285 code[3] |= ((target>>8) & 0x7) << 12;
3286 code[3] |= target & 0xff;
3287
3288 memcpy(extra->jumpIsland, code, 10);
3289 }
3290
3291 return extra;
3292 }
3293 #endif // arm_HOST_ARCH
3294
3295 /* --------------------------------------------------------------------------
3296 * PowerPC specifics (instruction cache flushing)
3297 * ------------------------------------------------------------------------*/
3298
3299 #ifdef powerpc_HOST_ARCH
3300 /*
3301 ocFlushInstructionCache
3302
3303 Flush the data & instruction caches.
3304 Because the PPC has split data/instruction caches, we have to
3305 do that whenever we modify code at runtime.
3306 */
3307
3308 static void
3309 ocFlushInstructionCacheFrom(void* begin, size_t length)
3310 {
3311 size_t n = (length + 3) / 4;
3312 unsigned long* p = begin;
3313
3314 while (n--)
3315 {
3316 __asm__ volatile ( "dcbf 0,%0\n\t"
3317 "sync\n\t"
3318 "icbi 0,%0"
3319 :
3320 : "r" (p)
3321 );
3322 p++;
3323 }
3324 __asm__ volatile ( "sync\n\t"
3325 "isync"
3326 );
3327 }
3328
3329 static void
3330 ocFlushInstructionCache( ObjectCode *oc )
3331 {
3332 /* The main object code */
3333 ocFlushInstructionCacheFrom(oc->image
3334 #ifdef darwin_HOST_OS
3335 + oc->misalignment
3336 #endif
3337 , oc->fileSize);
3338
3339 /* Jump Islands */
3340 ocFlushInstructionCacheFrom(oc->symbol_extras, sizeof(SymbolExtra) * oc->n_symbol_extras);
3341 }
3342 #endif /* powerpc_HOST_ARCH */
3343
3344
3345 /* --------------------------------------------------------------------------
3346 * PEi386 specifics (Win32 targets)
3347 * ------------------------------------------------------------------------*/
3348
3349 /* The information for this linker comes from
3350 Microsoft Portable Executable
3351 and Common Object File Format Specification
3352 revision 5.1 January 1998
3353 which SimonM says comes from the MS Developer Network CDs.
3354
3355 It can be found there (on older CDs), but can also be found
3356 online at:
3357
3358 http://www.microsoft.com/hwdev/hardware/PECOFF.asp
3359
3360 (this is Rev 6.0 from February 1999).
3361
3362 Things move, so if that fails, try searching for it via
3363
3364 http://www.google.com/search?q=PE+COFF+specification
3365
3366 The ultimate reference for the PE format is the Winnt.h
3367 header file that comes with the Platform SDKs; as always,
3368 implementations will drift wrt their documentation.
3369
3370 A good background article on the PE format is Matt Pietrek's
3371 March 1994 article in Microsoft System Journal (MSJ)
3372 (Vol.9, No. 3): "Peering Inside the PE: A Tour of the
3373 Win32 Portable Executable File Format." The info in there
3374 has recently been updated in a two part article in
3375 MSDN magazine, issues Feb and March 2002,
3376 "Inside Windows: An In-Depth Look into the Win32 Portable
3377 Executable File Format"
3378
3379 John Levine's book "Linkers and Loaders" contains useful
3380 info on PE too.
3381 */
3382
3383
3384 #if defined(OBJFORMAT_PEi386)
3385
3386
3387
3388 typedef unsigned char UChar;
3389 typedef unsigned short UInt16;
3390 typedef unsigned int UInt32;
3391 typedef int Int32;
3392 typedef unsigned long long int UInt64;
3393
3394
3395 typedef
3396 struct {
3397 UInt16 Machine;
3398 UInt16 NumberOfSections;
3399 UInt32 TimeDateStamp;
3400 UInt32 PointerToSymbolTable;
3401 UInt32 NumberOfSymbols;
3402 UInt16 SizeOfOptionalHeader;
3403 UInt16 Characteristics;
3404 }
3405 COFF_header;
3406
3407 #define sizeof_COFF_header 20
3408
3409
3410 typedef
3411 struct {
3412 UChar Name[8];
3413 UInt32 VirtualSize;
3414 UInt32 VirtualAddress;
3415 UInt32 SizeOfRawData;
3416 UInt32 PointerToRawData;
3417 UInt32 PointerToRelocations;
3418 UInt32 PointerToLinenumbers;
3419 UInt16 NumberOfRelocations;
3420 UInt16 NumberOfLineNumbers;
3421 UInt32 Characteristics;
3422 }
3423 COFF_section;
3424
3425 #define sizeof_COFF_section 40
3426
3427
3428 typedef
3429 struct {
3430 UChar Name[8];
3431 UInt32 Value;
3432 UInt16 SectionNumber;
3433 UInt16 Type;
3434 UChar StorageClass;
3435 UChar NumberOfAuxSymbols;
3436 }
3437 COFF_symbol;
3438
3439 #define sizeof_COFF_symbol 18
3440
3441
3442 typedef
3443 struct {
3444 UInt32 VirtualAddress;
3445 UInt32 SymbolTableIndex;
3446 UInt16 Type;
3447 }
3448 COFF_reloc;
3449
3450 #define sizeof_COFF_reloc 10
3451
3452
3453 /* From PE spec doc, section 3.3.2 */
3454 /* Note use of MYIMAGE_* since IMAGE_* are already defined in
3455 windows.h -- for the same purpose, but I want to know what I'm
3456 getting, here. */
3457 #define MYIMAGE_FILE_RELOCS_STRIPPED 0x0001
3458 #define MYIMAGE_FILE_EXECUTABLE_IMAGE 0x0002
3459 #define MYIMAGE_FILE_DLL 0x2000
3460 #define MYIMAGE_FILE_SYSTEM 0x1000
3461 #define MYIMAGE_FILE_BYTES_REVERSED_HI 0x8000
3462 #define MYIMAGE_FILE_BYTES_REVERSED_LO 0x0080
3463 #define MYIMAGE_FILE_32BIT_MACHINE 0x0100
3464
3465 /* From PE spec doc, section 5.4.2 and 5.4.4 */
3466 #define MYIMAGE_SYM_CLASS_EXTERNAL 2
3467 #define MYIMAGE_SYM_CLASS_STATIC 3
3468 #define MYIMAGE_SYM_UNDEFINED 0
3469
3470 /* From PE spec doc, section 4.1 */
3471 #define MYIMAGE_SCN_CNT_CODE 0x00000020
3472 #define MYIMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
3473 #define MYIMAGE_SCN_LNK_NRELOC_OVFL 0x01000000
3474
3475 /* From PE spec doc, section 5.2.1 */
3476 #define MYIMAGE_REL_I386_DIR32 0x0006
3477 #define MYIMAGE_REL_I386_REL32 0x0014
3478
3479 /* We assume file pointer is right at the
3480 beginning of COFF object.
3481 */
3482 static char *
3483 allocateImageAndTrampolines (
3484 #if defined(x86_64_HOST_ARCH)
3485 FILE* f, pathchar* arch_name, char* member_name,
3486 #endif
3487 int size )
3488 {
3489 char* image;
3490 #if defined(x86_64_HOST_ARCH)
3491 /* PeCoff contains number of symbols right in it's header, so
3492 we can reserve the room for symbolExtras right here. */
3493 COFF_header hdr;
3494 size_t n;
3495
3496 n = fread ( &hdr, 1, sizeof_COFF_header, f );
3497 if (n != sizeof( COFF_header ))
3498 barf("getNumberOfSymbols: error whilst reading `%s' header in `%S'",
3499 member_name, arch_name);
3500 fseek( f, -sizeof_COFF_header, SEEK_CUR );
3501
3502 /* We get back 8-byte aligned memory (is that guaranteed?), but
3503 the offsets to the sections within the file are all 4 mod 8
3504 (is that guaranteed?). We therefore need to offset the image
3505 by 4, so that all the pointers are 8-byte aligned, so that
3506 pointer tagging works. */
3507 /* For 32-bit case we don't need this, hence we use macro PEi386_IMAGE_OFFSET,
3508 which equals to 4 for 64-bit case and 0 for 32-bit case. */
3509 /* We allocate trampolines area for all symbols right behind
3510 image data, aligned on 8. */
3511 size = ((PEi386_IMAGE_OFFSET + size + 0x7) & ~0x7)
3512 + hdr.NumberOfSymbols * sizeof(SymbolExtra);
3513 #endif
3514 image = VirtualAlloc(NULL, size,
3515 MEM_RESERVE | MEM_COMMIT,
3516 PAGE_EXECUTE_READWRITE);
3517 return image + PEi386_IMAGE_OFFSET;
3518 }
3519
3520 /* We use myindex to calculate array addresses, rather than
3521 simply doing the normal subscript thing. That's because
3522 some of the above structs have sizes which are not
3523 a whole number of words. GCC rounds their sizes up to a
3524 whole number of words, which means that the address calcs
3525 arising from using normal C indexing or pointer arithmetic
3526 are just plain wrong. Sigh.
3527 */
3528 static UChar *
3529 myindex ( int scale, void* base, int index )
3530 {
3531 return
3532 ((UChar*)base) + scale * index;
3533 }
3534
3535
3536 static void
3537 printName ( UChar* name, UChar* strtab )
3538 {
3539 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3540 UInt32 strtab_offset = * (UInt32*)(name+4);
3541 debugBelch("%s", strtab + strtab_offset );
3542 } else {
3543 int i;
3544 for (i = 0; i < 8; i++) {
3545 if (name[i] == 0) break;
3546 debugBelch("%c", name[i] );
3547 }
3548 }
3549 }
3550
3551
3552 static void
3553 copyName ( UChar* name, UChar* strtab, UChar* dst, int dstSize )
3554 {
3555 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3556 UInt32 strtab_offset = * (UInt32*)(name+4);
3557 strncpy ( (char*)dst, (char*)strtab+strtab_offset, dstSize );
3558 dst[dstSize-1] = 0;
3559 } else {
3560 int i = 0;
3561 while (1) {
3562 if (i >= 8) break;
3563 if (name[i] == 0) break;
3564 dst[i] = name[i];
3565 i++;
3566 }
3567 dst[i] = 0;
3568 }
3569 }
3570
3571
3572 static UChar *
3573 cstring_from_COFF_symbol_name ( UChar* name, UChar* strtab )
3574 {
3575 UChar* newstr;
3576 /* If the string is longer than 8 bytes, look in the
3577 string table for it -- this will be correctly zero terminated.
3578 */
3579 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3580 UInt32 strtab_offset = * (UInt32*)(name+4);
3581 return ((UChar*)strtab) + strtab_offset;
3582 }
3583 /* Otherwise, if shorter than 8 bytes, return the original,
3584 which by defn is correctly terminated.
3585 */
3586 if (name[7]==0) return name;
3587 /* The annoying case: 8 bytes. Copy into a temporary
3588 (XXX which is never freed ...)
3589 */
3590 newstr = stgMallocBytes(9, "cstring_from_COFF_symbol_name");
3591 ASSERT(newstr);
3592 strncpy((char*)newstr,(char*)name,8);
3593 newstr[8] = 0;
3594 return newstr;
3595 }
3596
3597 /* Getting the name of a section is mildly tricky, so we make a
3598 function for it. Sadly, in one case we have to copy the string
3599 (when it is exactly 8 bytes long there's no trailing '\0'), so for
3600 consistency we *always* copy the string; the caller must free it
3601 */
3602 static char *
3603 cstring_from_section_name (UChar* name, UChar* strtab)
3604 {
3605 char *newstr;
3606
3607 if (name[0]=='/') {
3608 int strtab_offset = strtol((char*)name+1,NULL,10);
3609 int len = strlen(((char*)strtab) + strtab_offset);
3610
3611 newstr = stgMallocBytes(len+1, "cstring_from_section_symbol_name");
3612 strcpy((char*)newstr, (char*)((UChar*)strtab) + strtab_offset);
3613 return newstr;
3614 }
3615 else
3616 {
3617 newstr = stgMallocBytes(9, "cstring_from_section_symbol_name");
3618 ASSERT(newstr);
3619 strncpy((char*)newstr,(char*)name,8);
3620 newstr[8] = 0;
3621 return newstr;
3622 }
3623 }
3624
3625 /* Just compares the short names (first 8 chars) */
3626 static COFF_section *
3627 findPEi386SectionCalled ( ObjectCode* oc, UChar* name, UChar* strtab )
3628 {
3629 int i;
3630 rtsBool long_name = rtsFalse;
3631 COFF_header* hdr
3632 = (COFF_header*)(oc->image);
3633 COFF_section* sectab
3634 = (COFF_section*) (
3635 ((UChar*)(oc->image))
3636 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3637 );
3638 // String is longer than 8 bytes, swap in the proper
3639 // (NULL-terminated) version, and make a note that this
3640 // is a long name.
3641 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3642 UInt32 strtab_offset = * (UInt32*)(name+4);
3643 name = ((UChar*)strtab) + strtab_offset;
3644 long_name = rtsTrue;
3645 }
3646 for (i = 0; i < hdr->NumberOfSections; i++) {
3647 UChar* n1;
3648 UChar* n2;
3649 COFF_section* section_i
3650 = (COFF_section*)
3651 myindex ( sizeof_COFF_section, sectab, i );
3652 n1 = (UChar*) &(section_i->Name);
3653 n2 = name;
3654 // Long section names are prefixed with a slash, see
3655 // also cstring_from_section_name
3656 if (n1[0] == '/' && long_name) {
3657 // Long name check
3658 // We don't really want to make an assumption that the string
3659 // table indexes are the same, so we'll do a proper check.
3660 int n1_strtab_offset = strtol((char*)n1+1,NULL,10);
3661 n1 = (UChar*) (((char*)strtab) + n1_strtab_offset);
3662 if (0==strcmp((const char*)n1, (const char*)n2)) {
3663 return section_i;
3664 }
3665 } else if (n1[0] != '/' && !long_name) {
3666 // Short name check
3667 if (n1[0]==n2[0] && n1[1]==n2[1] && n1[2]==n2[2] &&
3668 n1[3]==n2[3] && n1[4]==n2[4] && n1[5]==n2[5] &&
3669 n1[6]==n2[6] && n1[7]==n2[7]) {
3670 return section_i;
3671 }
3672 } else {
3673 // guaranteed to mismatch, because we never attempt to link
3674 // in an executable where the section name may be truncated
3675 }
3676 }
3677
3678 return NULL;
3679 }
3680
3681 static void
3682 zapTrailingAtSign ( UChar* sym )
3683 {
3684 # define my_isdigit(c) ((c) >= '0' && (c) <= '9')
3685 int i, j;
3686 if (sym[0] == 0) return;
3687 i = 0;
3688 while (sym[i] != 0) i++;
3689 i--;
3690 j = i;
3691 while (j > 0 && my_isdigit(sym[j])) j--;
3692 if (j > 0 && sym[j] == '@' && j != i) sym[j] = 0;
3693 # undef my_isdigit
3694 }
3695
3696 static void *
3697 lookupSymbolInDLLs ( UChar *lbl )
3698 {
3699 OpenedDLL* o_dll;
3700 void *sym;
3701
3702 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
3703 /* debugBelch("look in %s for %s\n", o_dll->name, lbl); */
3704
3705 if (lbl[0] == '_') {
3706 /* HACK: if the name has an initial underscore, try stripping
3707 it off & look that up first. I've yet to verify whether there's
3708 a Rule that governs whether an initial '_' *should always* be
3709 stripped off when mapping from import lib name to the DLL name.
3710 */
3711 sym = GetProcAddress(o_dll->instance, (char*)(lbl+1));
3712 if (sym != NULL) {
3713 /*debugBelch("found %s in %s\n", lbl+1,o_dll->name);*/
3714 return sym;
3715 }
3716 }
3717
3718 /* Ticket #2283.
3719 Long description: http://support.microsoft.com/kb/132044
3720 tl;dr:
3721 If C/C++ compiler sees __declspec(dllimport) ... foo ...
3722 it generates call *__imp_foo, and __imp_foo here has exactly
3723 the same semantics as in __imp_foo = GetProcAddress(..., "foo")
3724 */
3725 if (sym == NULL && strncmp ((const char*)lbl, "__imp_", 6) == 0) {
3726 sym = GetProcAddress(o_dll->instance, (char*)(lbl+6));
3727 if (sym != NULL) {
3728 IndirectAddr* ret;
3729 ret = stgMallocBytes( sizeof(IndirectAddr), "lookupSymbolInDLLs" );
3730 ret->addr = sym;
3731 ret->next = indirects;
3732 indirects = ret;
3733 errorBelch("warning: %s from %S is linked instead of %s",
3734 (char*)(lbl+6), o_dll->name, (char*)lbl);
3735 return (void*) & ret->addr;
3736 }
3737 }
3738
3739 sym = GetProcAddress(o_dll->instance, (char*)lbl);
3740 if (sym != NULL) {
3741 /*debugBelch("found %s in %s\n", lbl,o_dll->name);*/
3742 return sym;
3743 }
3744 }
3745 return NULL;
3746 }
3747
3748
3749 static int
3750 ocVerifyImage_PEi386 ( ObjectCode* oc )
3751 {
3752 int i;
3753 UInt32 j, noRelocs;
3754 COFF_header* hdr;
3755 COFF_section* sectab;
3756 COFF_symbol* symtab;
3757 UChar* strtab;
3758 /* debugBelch("\nLOADING %s\n", oc->fileName); */
3759 hdr = (COFF_header*)(oc->image);
3760 sectab = (COFF_section*) (
3761 ((UChar*)(oc->image))
3762 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3763 );
3764 symtab = (COFF_symbol*) (
3765 ((UChar*)(oc->image))
3766 + hdr->PointerToSymbolTable
3767 );
3768 strtab = ((UChar*)symtab)
3769 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3770
3771 #if defined(i386_HOST_ARCH)
3772 if (hdr->Machine != 0x14c) {
3773 errorBelch("%" PATH_FMT ": Not x86 PEi386", oc->fileName);
3774 return 0;
3775 }
3776 #elif defined(x86_64_HOST_ARCH)
3777 if (hdr->Machine != 0x8664) {
3778 errorBelch("%" PATH_FMT ": Not x86_64 PEi386", oc->fileName);
3779 return 0;
3780 }
3781 #else
3782 errorBelch("PEi386 not supported on this arch");
3783 #endif
3784
3785 if (hdr->SizeOfOptionalHeader != 0) {
3786 errorBelch("%" PATH_FMT ": PEi386 with nonempty optional header", oc->fileName);
3787 return 0;
3788 }
3789 if ( /* (hdr->Characteristics & MYIMAGE_FILE_RELOCS_STRIPPED) || */
3790 (hdr->Characteristics & MYIMAGE_FILE_EXECUTABLE_IMAGE) ||
3791 (hdr->Characteristics & MYIMAGE_FILE_DLL) ||
3792 (hdr->Characteristics & MYIMAGE_FILE_SYSTEM) ) {
3793 errorBelch("%" PATH_FMT ": Not a PEi386 object file", oc->fileName);
3794 return 0;
3795 }
3796 if ( (hdr->Characteristics & MYIMAGE_FILE_BYTES_REVERSED_HI)
3797 /* || !(hdr->Characteristics & MYIMAGE_FILE_32BIT_MACHINE) */ ) {
3798 errorBelch("%" PATH_FMT ": Invalid PEi386 word size or endiannness: %d",
3799 oc->fileName,
3800 (int)(hdr->Characteristics));
3801 return 0;
3802 }
3803 /* If the string table size is way crazy, this might indicate that
3804 there are more than 64k relocations, despite claims to the
3805 contrary. Hence this test. */
3806 /* debugBelch("strtab size %d\n", * (UInt32*)strtab); */
3807 #if 0
3808 if ( (*(UInt32*)strtab) > 600000 ) {
3809 /* Note that 600k has no special significance other than being
3810 big enough to handle the almost-2MB-sized lumps that
3811 constitute HSwin32*.o. */
3812 debugBelch("PEi386 object has suspiciously large string table; > 64k relocs?");
3813 return 0;
3814 }
3815 #endif
3816
3817 /* No further verification after this point; only debug printing. */
3818 i = 0;
3819 IF_DEBUG(linker, i=1);
3820 if (i == 0) return 1;
3821
3822 debugBelch( "sectab offset = %" FMT_Int "\n", ((UChar*)sectab) - ((UChar*)hdr) );
3823 debugBelch( "symtab offset = %" FMT_Int "\n", ((UChar*)symtab) - ((UChar*)hdr) );
3824 debugBelch( "strtab offset = %" FMT_Int "\n", ((UChar*)strtab) - ((UChar*)hdr) );
3825
3826 debugBelch("\n" );
3827 debugBelch( "Machine: 0x%x\n", (UInt32)(hdr->Machine) );
3828 debugBelch( "# sections: %d\n", (UInt32)(hdr->NumberOfSections) );
3829 debugBelch( "time/date: 0x%x\n", (UInt32)(hdr->TimeDateStamp) );
3830 debugBelch( "symtab offset: %d\n", (UInt32)(hdr->PointerToSymbolTable) );
3831 debugBelch( "# symbols: %d\n", (UInt32)(hdr->NumberOfSymbols) );
3832 debugBelch( "sz of opt hdr: %d\n", (UInt32)(hdr->SizeOfOptionalHeader) );
3833 debugBelch( "characteristics: 0x%x\n", (UInt32)(hdr->Characteristics) );
3834
3835 /* Print the section table. */
3836 debugBelch("\n" );
3837 for (i = 0; i < hdr->NumberOfSections; i++) {
3838 COFF_reloc* reltab;
3839 COFF_section* sectab_i
3840 = (COFF_section*)
3841 myindex ( sizeof_COFF_section, sectab, i );
3842 debugBelch(
3843 "\n"
3844 "section %d\n"
3845 " name `",
3846 i
3847 );
3848 printName ( sectab_i->Name, strtab );
3849 debugBelch(
3850 "'\n"
3851 " vsize %d\n"
3852 " vaddr %d\n"
3853 " data sz %d\n"
3854 " data off %d\n"
3855 " num rel %d\n"
3856 " off rel %d\n"
3857 " ptr raw 0x%x\n",
3858 sectab_i->VirtualSize,
3859 sectab_i->VirtualAddress,
3860 sectab_i->SizeOfRawData,
3861 sectab_i->PointerToRawData,
3862 sectab_i->NumberOfRelocations,
3863 sectab_i->PointerToRelocations,
3864 sectab_i->PointerToRawData
3865 );
3866 reltab = (COFF_reloc*) (
3867 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
3868 );
3869
3870 if ( sectab_i->Characteristics & MYIMAGE_SCN_LNK_NRELOC_OVFL ) {
3871 /* If the relocation field (a short) has overflowed, the
3872 * real count can be found in the first reloc entry.
3873 *
3874 * See Section 4.1 (last para) of the PE spec (rev6.0).
3875 */
3876 COFF_reloc* rel = (COFF_reloc*)
3877 myindex ( sizeof_COFF_reloc, reltab, 0 );
3878 noRelocs = rel->VirtualAddress;
3879 j = 1;
3880 } else {
3881 noRelocs = sectab_i->NumberOfRelocations;
3882 j = 0;
3883 }
3884
3885 for (; j < noRelocs; j++) {
3886 COFF_symbol* sym;
3887 COFF_reloc* rel = (COFF_reloc*)
3888 myindex ( sizeof_COFF_reloc, reltab, j );
3889 debugBelch(
3890 " type 0x%-4x vaddr 0x%-8x name `",
3891 (UInt32)rel->Type,
3892 rel->VirtualAddress );
3893 sym = (COFF_symbol*)
3894 myindex ( sizeof_COFF_symbol, symtab, rel->SymbolTableIndex );
3895 /* Hmm..mysterious looking offset - what's it for? SOF */
3896 printName ( sym->Name, strtab -10 );
3897 debugBelch("'\n" );
3898 }
3899
3900 debugBelch("\n" );
3901 }
3902 debugBelch("\n" );
3903 debugBelch("string table has size 0x%x\n", * (UInt32*)strtab );
3904 debugBelch("---START of string table---\n");
3905 for (i = 4; i < *(Int32*)strtab; i++) {
3906 if (strtab[i] == 0)
3907 debugBelch("\n"); else
3908 debugBelch("%c", strtab[i] );
3909 }
3910 debugBelch("--- END of string table---\n");
3911
3912 debugBelch("\n" );
3913 i = 0;
3914 while (1) {
3915 COFF_symbol* symtab_i;
3916 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
3917 symtab_i = (COFF_symbol*)
3918 myindex ( sizeof_COFF_symbol, symtab, i );
3919 debugBelch(
3920 "symbol %d\n"
3921 " name `",
3922 i
3923 );
3924 printName ( symtab_i->Name, strtab );
3925 debugBelch(
3926 "'\n"
3927 " value 0x%x\n"
3928 " 1+sec# %d\n"
3929 " type 0x%x\n"
3930 " sclass 0x%x\n"
3931 " nAux %d\n",
3932 symtab_i->Value,
3933 (Int32)(symtab_i->SectionNumber),
3934 (UInt32)symtab_i->Type,
3935 (UInt32)symtab_i->StorageClass,
3936 (UInt32)symtab_i->NumberOfAuxSymbols
3937 );
3938 i += symtab_i->NumberOfAuxSymbols;
3939 i++;
3940 }
3941
3942 debugBelch("\n" );
3943 return 1;
3944 }
3945
3946
3947 static int
3948 ocGetNames_PEi386 ( ObjectCode* oc )
3949 {
3950 COFF_header* hdr;
3951 COFF_section* sectab;
3952 COFF_symbol* symtab;
3953 UChar* strtab;
3954
3955 UChar* sname;
3956 void* addr;
3957 int i;
3958
3959 hdr = (COFF_header*)(oc->image);
3960 sectab = (COFF_section*) (
3961 ((UChar*)(oc->image))
3962 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3963 );
3964 symtab = (COFF_symbol*) (
3965 ((UChar*)(oc->image))
3966 + hdr->PointerToSymbolTable
3967 );
3968 strtab = ((UChar*)(oc->image))
3969 + hdr->PointerToSymbolTable
3970 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3971
3972 /* Allocate space for any (local, anonymous) .bss sections. */
3973
3974 for (i = 0; i < hdr->NumberOfSections; i++) {
3975 UInt32 bss_sz;
3976 UChar* zspace;
3977 COFF_section* sectab_i
3978 = (COFF_section*)
3979 myindex ( sizeof_COFF_section, sectab, i );
3980
3981 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3982
3983 if (0 != strcmp(secname, ".bss")) {
3984 stgFree(secname);
3985 continue;
3986 }
3987
3988 stgFree(secname);
3989
3990 /* sof 10/05: the PE spec text isn't too clear regarding what
3991 * the SizeOfRawData field is supposed to hold for object
3992 * file sections containing just uninitialized data -- for executables,
3993 * it is supposed to be zero; unclear what it's supposed to be
3994 * for object files. However, VirtualSize is guaranteed to be
3995 * zero for object files, which definitely suggests that SizeOfRawData
3996 * will be non-zero (where else would the size of this .bss section be
3997 * stored?) Looking at the COFF_section info for incoming object files,
3998 * this certainly appears to be the case.
3999 *
4000 * => I suspect we've been incorrectly handling .bss sections in (relocatable)
4001 * object files up until now. This turned out to bite us with ghc-6.4.1's use
4002 * of gcc-3.4.x, which has started to emit initially-zeroed-out local 'static'
4003 * variable decls into the .bss section. (The specific function in Q which
4004 * triggered this is libraries/base/cbits/dirUtils.c:__hscore_getFolderPath())
4005 */
4006 if (sectab_i->VirtualSize == 0 && sectab_i->SizeOfRawData == 0) continue;
4007 /* This is a non-empty .bss section. Allocate zeroed space for
4008 it, and set its PointerToRawData field such that oc->image +
4009 PointerToRawData == addr_of_zeroed_space. */
4010 bss_sz = sectab_i->VirtualSize;
4011 if ( bss_sz < sectab_i->SizeOfRawData) { bss_sz = sectab_i->SizeOfRawData; }
4012 zspace = stgCallocBytes(1, bss_sz, "ocGetNames_PEi386(anonymous bss)");
4013 sectab_i->PointerToRawData = ((UChar*)zspace) - ((UChar*)(oc->image));
4014 addProddableBlock(oc, zspace, bss_sz);
4015 /* debugBelch("BSS anon section at 0x%x\n", zspace); */
4016 }
4017
4018 /* Copy section information into the ObjectCode. */
4019
4020 for (i = 0; i < hdr->NumberOfSections; i++) {
4021 UChar* start;
4022 UChar* end;
4023 UInt32 sz;
4024
4025 SectionKind kind
4026 = SECTIONKIND_OTHER;
4027 COFF_section* sectab_i
4028 = (COFF_section*)
4029 myindex ( sizeof_COFF_section, sectab, i );
4030
4031 char *secname = cstring_from_section_name(sectab_i->Name, strtab);