Fix #8698 by properly handling long section names and reenabling .ctors handling
[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 #endif
1722
1723 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1724
1725 /* Suppose in ghci we load a temporary SO for a module containing
1726 f = 1
1727 and then modify the module, recompile, and load another temporary
1728 SO with
1729 f = 2
1730 Then as we don't unload the first SO, dlsym will find the
1731 f = 1
1732 symbol whereas we want the
1733 f = 2
1734 symbol. We therefore need to keep our own SO handle list, and
1735 try SOs in the right order. */
1736
1737 typedef
1738 struct _OpenedSO {
1739 struct _OpenedSO* next;
1740 void *handle;
1741 }
1742 OpenedSO;
1743
1744 /* A list thereof. */
1745 static OpenedSO* openedSOs = NULL;
1746
1747 static const char *
1748 internal_dlopen(const char *dll_name)
1749 {
1750 OpenedSO* o_so;
1751 void *hdl;
1752 const char *errmsg;
1753 char *errmsg_copy;
1754
1755 // omitted: RTLD_NOW
1756 // see http://www.haskell.org/pipermail/cvs-ghc/2007-September/038570.html
1757 IF_DEBUG(linker,
1758 debugBelch("internal_dlopen: dll_name = '%s'\n", dll_name));
1759
1760 //-------------- Begin critical section ------------------
1761 // This critical section is necessary because dlerror() is not
1762 // required to be reentrant (see POSIX -- IEEE Std 1003.1-2008)
1763 // Also, the error message returned must be copied to preserve it
1764 // (see POSIX also)
1765
1766 ACQUIRE_LOCK(&dl_mutex);
1767 hdl = dlopen(dll_name, RTLD_LAZY | RTLD_GLOBAL);
1768
1769 errmsg = NULL;
1770 if (hdl == NULL) {
1771 /* dlopen failed; return a ptr to the error msg. */
1772 errmsg = dlerror();
1773 if (errmsg == NULL) errmsg = "addDLL: unknown error";
1774 errmsg_copy = stgMallocBytes(strlen(errmsg)+1, "addDLL");
1775 strcpy(errmsg_copy, errmsg);
1776 errmsg = errmsg_copy;
1777 }
1778 o_so = stgMallocBytes(sizeof(OpenedSO), "addDLL");
1779 o_so->handle = hdl;
1780 o_so->next = openedSOs;
1781 openedSOs = o_so;
1782
1783 RELEASE_LOCK(&dl_mutex);
1784 //--------------- End critical section -------------------
1785
1786 return errmsg;
1787 }
1788
1789 static void *
1790 internal_dlsym(void *hdl, const char *symbol) {
1791 OpenedSO* o_so;
1792 void *v;
1793
1794 // We acquire dl_mutex as concurrent dl* calls may alter dlerror
1795 ACQUIRE_LOCK(&dl_mutex);
1796 dlerror();
1797 for (o_so = openedSOs; o_so != NULL; o_so = o_so->next) {
1798 v = dlsym(o_so->handle, symbol);
1799 if (dlerror() == NULL) {
1800 RELEASE_LOCK(&dl_mutex);
1801 return v;
1802 }
1803 }
1804 v = dlsym(hdl, symbol);
1805 RELEASE_LOCK(&dl_mutex);
1806 return v;
1807 }
1808 # endif
1809
1810 const char *
1811 addDLL( pathchar *dll_name )
1812 {
1813 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1814 /* ------------------- ELF DLL loader ------------------- */
1815
1816 #define NMATCH 5
1817 regmatch_t match[NMATCH];
1818 const char *errmsg;
1819 FILE* fp;
1820 size_t match_length;
1821 #define MAXLINE 1000
1822 char line[MAXLINE];
1823 int result;
1824
1825 initLinker();
1826
1827 IF_DEBUG(linker, debugBelch("addDLL: dll_name = '%s'\n", dll_name));
1828 errmsg = internal_dlopen(dll_name);
1829
1830 if (errmsg == NULL) {
1831 return NULL;
1832 }
1833
1834 // GHC Trac ticket #2615
1835 // On some systems (e.g., Gentoo Linux) dynamic files (e.g. libc.so)
1836 // contain linker scripts rather than ELF-format object code. This
1837 // code handles the situation by recognizing the real object code
1838 // file name given in the linker script.
1839 //
1840 // If an "invalid ELF header" error occurs, it is assumed that the
1841 // .so file contains a linker script instead of ELF object code.
1842 // In this case, the code looks for the GROUP ( ... ) linker
1843 // directive. If one is found, the first file name inside the
1844 // parentheses is treated as the name of a dynamic library and the
1845 // code attempts to dlopen that file. If this is also unsuccessful,
1846 // an error message is returned.
1847
1848 // see if the error message is due to an invalid ELF header
1849 IF_DEBUG(linker, debugBelch("errmsg = '%s'\n", errmsg));
1850 result = regexec(&re_invalid, errmsg, (size_t) NMATCH, match, 0);
1851 IF_DEBUG(linker, debugBelch("result = %i\n", result));
1852 if (result == 0) {
1853 // success -- try to read the named file as a linker script
1854 match_length = (size_t) stg_min((match[1].rm_eo - match[1].rm_so),
1855 MAXLINE-1);
1856 strncpy(line, (errmsg+(match[1].rm_so)),match_length);
1857 line[match_length] = '\0'; // make sure string is null-terminated
1858 IF_DEBUG(linker, debugBelch ("file name = '%s'\n", line));
1859 if ((fp = fopen(line, "r")) == NULL) {
1860 return errmsg; // return original error if open fails
1861 }
1862 // try to find a GROUP or INPUT ( ... ) command
1863 while (fgets(line, MAXLINE, fp) != NULL) {
1864 IF_DEBUG(linker, debugBelch("input line = %s", line));
1865 if (regexec(&re_realso, line, (size_t) NMATCH, match, 0) == 0) {
1866 // success -- try to dlopen the first named file
1867 IF_DEBUG(linker, debugBelch("match%s\n",""));
1868 line[match[2].rm_eo] = '\0';
1869 errmsg = internal_dlopen(line+match[2].rm_so);
1870 break;
1871 }
1872 // if control reaches here, no GROUP or INPUT ( ... ) directive
1873 // was found and the original error message is returned to the
1874 // caller
1875 }
1876 fclose(fp);
1877 }
1878 return errmsg;
1879
1880 # elif defined(OBJFORMAT_PEi386)
1881 /* ------------------- Win32 DLL loader ------------------- */
1882
1883 pathchar* buf;
1884 OpenedDLL* o_dll;
1885 HINSTANCE instance;
1886
1887 initLinker();
1888
1889 /* debugBelch("\naddDLL; dll_name = `%s'\n", dll_name); */
1890
1891 /* See if we've already got it, and ignore if so. */
1892 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
1893 if (0 == pathcmp(o_dll->name, dll_name))
1894 return NULL;
1895 }
1896
1897 /* The file name has no suffix (yet) so that we can try
1898 both foo.dll and foo.drv
1899
1900 The documentation for LoadLibrary says:
1901 If no file name extension is specified in the lpFileName
1902 parameter, the default library extension .dll is
1903 appended. However, the file name string can include a trailing
1904 point character (.) to indicate that the module name has no
1905 extension. */
1906
1907 buf = stgMallocBytes((pathlen(dll_name) + 10) * sizeof(wchar_t), "addDLL");
1908 swprintf(buf, L"%s.DLL", dll_name);
1909 instance = LoadLibraryW(buf);
1910 if (instance == NULL) {
1911 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1912 // KAA: allow loading of drivers (like winspool.drv)
1913 swprintf(buf, L"%s.DRV", dll_name);
1914 instance = LoadLibraryW(buf);
1915 if (instance == NULL) {
1916 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1917 // #1883: allow loading of unix-style libfoo.dll DLLs
1918 swprintf(buf, L"lib%s.DLL", dll_name);
1919 instance = LoadLibraryW(buf);
1920 if (instance == NULL) {
1921 goto error;
1922 }
1923 }
1924 }
1925 stgFree(buf);
1926
1927 /* Add this DLL to the list of DLLs in which to search for symbols. */
1928 o_dll = stgMallocBytes( sizeof(OpenedDLL), "addDLL" );
1929 o_dll->name = pathdup(dll_name);
1930 o_dll->instance = instance;
1931 o_dll->next = opened_dlls;
1932 opened_dlls = o_dll;
1933
1934 return NULL;
1935
1936 error:
1937 stgFree(buf);
1938 sysErrorBelch("%" PATH_FMT, dll_name);
1939
1940 /* LoadLibrary failed; return a ptr to the error msg. */
1941 return "addDLL: could not load DLL";
1942
1943 # else
1944 barf("addDLL: not implemented on this platform");
1945 # endif
1946 }
1947
1948 /* -----------------------------------------------------------------------------
1949 * insert a symbol in the hash table
1950 */
1951 void
1952 insertSymbol(pathchar* obj_name, char* key, void* data)
1953 {
1954 ghciInsertSymbolTable(obj_name, symhash, key, data, HS_BOOL_FALSE, NULL);
1955 }
1956
1957 /* -----------------------------------------------------------------------------
1958 * lookup a symbol in the hash table
1959 */
1960 void *
1961 lookupSymbol( char *lbl )
1962 {
1963 void *val;
1964 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s\n", lbl));
1965 initLinker() ;
1966 ASSERT(symhash != NULL);
1967
1968 if (!ghciLookupSymbolTable(symhash, lbl, &val)) {
1969 IF_DEBUG(linker, debugBelch("lookupSymbol: symbol not found\n"));
1970 # if defined(OBJFORMAT_ELF)
1971 return internal_dlsym(dl_prog_handle, lbl);
1972 # elif defined(OBJFORMAT_MACHO)
1973 # if HAVE_DLFCN_H
1974 /* On OS X 10.3 and later, we use dlsym instead of the old legacy
1975 interface.
1976
1977 HACK: On OS X, all symbols are prefixed with an underscore.
1978 However, dlsym wants us to omit the leading underscore from the
1979 symbol name -- the dlsym routine puts it back on before searching
1980 for the symbol. For now, we simply strip it off here (and ONLY
1981 here).
1982 */
1983 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s with dlsym\n", lbl));
1984 ASSERT(lbl[0] == '_');
1985 return internal_dlsym(dl_prog_handle, lbl + 1);
1986 # else
1987 if (NSIsSymbolNameDefined(lbl)) {
1988 NSSymbol symbol = NSLookupAndBindSymbol(lbl);
1989 return NSAddressOfSymbol(symbol);
1990 } else {
1991 return NULL;
1992 }
1993 # endif /* HAVE_DLFCN_H */
1994 # elif defined(OBJFORMAT_PEi386)
1995 void* sym;
1996
1997 sym = lookupSymbolInDLLs((unsigned char*)lbl);
1998 if (sym != NULL) { return sym; };
1999
2000 // Also try looking up the symbol without the @N suffix. Some
2001 // DLLs have the suffixes on their symbols, some don't.
2002 zapTrailingAtSign ( (unsigned char*)lbl );
2003 sym = lookupSymbolInDLLs((unsigned char*)lbl);
2004 if (sym != NULL) { return sym; };
2005 return NULL;
2006
2007 # else
2008 ASSERT(2+2 == 5);
2009 return NULL;
2010 # endif
2011 } else {
2012 IF_DEBUG(linker, debugBelch("lookupSymbol: value of %s is %p\n", lbl, val));
2013 return val;
2014 }
2015 }
2016
2017 /* -----------------------------------------------------------------------------
2018 Create a StablePtr for a foreign export. This is normally called by
2019 a C function with __attribute__((constructor)), which is generated
2020 by GHC and linked into the module.
2021
2022 If the object code is being loaded dynamically, then we remember
2023 which StablePtrs were allocated by the constructors and free them
2024 again in unloadObj().
2025 -------------------------------------------------------------------------- */
2026
2027 static ObjectCode *loading_obj = NULL;
2028
2029 StgStablePtr foreignExportStablePtr (StgPtr p)
2030 {
2031 ForeignExportStablePtr *fe_sptr;
2032 StgStablePtr *sptr;
2033
2034 sptr = getStablePtr(p);
2035
2036 if (loading_obj != NULL) {
2037 fe_sptr = stgMallocBytes(sizeof(ForeignExportStablePtr),
2038 "foreignExportStablePtr");
2039 fe_sptr->stable_ptr = sptr;
2040 fe_sptr->next = loading_obj->stable_ptrs;
2041 loading_obj->stable_ptrs = fe_sptr;
2042 }
2043
2044 return sptr;
2045 }
2046
2047
2048 /* -----------------------------------------------------------------------------
2049 * Debugging aid: look in GHCi's object symbol tables for symbols
2050 * within DELTA bytes of the specified address, and show their names.
2051 */
2052 #ifdef DEBUG
2053 void ghci_enquire ( char* addr );
2054
2055 void ghci_enquire ( char* addr )
2056 {
2057 int i;
2058 char* sym;
2059 char* a;
2060 const int DELTA = 64;
2061 ObjectCode* oc;
2062
2063 initLinker();
2064
2065 for (oc = objects; oc; oc = oc->next) {
2066 for (i = 0; i < oc->n_symbols; i++) {
2067 sym = oc->symbols[i];
2068 if (sym == NULL) continue;
2069 a = NULL;
2070 if (a == NULL) {
2071 ghciLookupSymbolTable(symhash, sym, (void **)&a);
2072 }
2073 if (a == NULL) {
2074 // debugBelch("ghci_enquire: can't find %s\n", sym);
2075 }
2076 else if (addr-DELTA <= a && a <= addr+DELTA) {
2077 debugBelch("%p + %3d == `%s'\n", addr, (int)(a - addr), sym);
2078 }
2079 }
2080 }
2081 }
2082 #endif
2083
2084 #ifdef USE_MMAP
2085 #define ROUND_UP(x,size) ((x + size - 1) & ~(size - 1))
2086
2087 static void *
2088 mmapForLinker (size_t bytes, nat flags, int fd)
2089 {
2090 void *map_addr = NULL;
2091 void *result;
2092 int pagesize, size;
2093 static nat fixed = 0;
2094
2095 IF_DEBUG(linker, debugBelch("mmapForLinker: start\n"));
2096 pagesize = getpagesize();
2097 size = ROUND_UP(bytes, pagesize);
2098
2099 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2100 mmap_again:
2101
2102 if (mmap_32bit_base != 0) {
2103 map_addr = mmap_32bit_base;
2104 }
2105 #endif
2106
2107 IF_DEBUG(linker, debugBelch("mmapForLinker: \tprotection %#0x\n", PROT_EXEC | PROT_READ | PROT_WRITE));
2108 IF_DEBUG(linker, debugBelch("mmapForLinker: \tflags %#0x\n", MAP_PRIVATE | TRY_MAP_32BIT | fixed | flags));
2109 result = mmap(map_addr, size, PROT_EXEC|PROT_READ|PROT_WRITE,
2110 MAP_PRIVATE|TRY_MAP_32BIT|fixed|flags, fd, 0);
2111
2112 if (result == MAP_FAILED) {
2113 sysErrorBelch("mmap %" FMT_Word " bytes at %p",(W_)size,map_addr);
2114 errorBelch("Try specifying an address with +RTS -xm<addr> -RTS");
2115 stg_exit(EXIT_FAILURE);
2116 }
2117
2118 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2119 if (mmap_32bit_base != 0) {
2120 if (result == map_addr) {
2121 mmap_32bit_base = (StgWord8*)map_addr + size;
2122 } else {
2123 if ((W_)result > 0x80000000) {
2124 // oops, we were given memory over 2Gb
2125 #if defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS)
2126 // Some platforms require MAP_FIXED. This is normally
2127 // a bad idea, because MAP_FIXED will overwrite
2128 // existing mappings.
2129 munmap(result,size);
2130 fixed = MAP_FIXED;
2131 goto mmap_again;
2132 #else
2133 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);
2134 #endif
2135 } else {
2136 // hmm, we were given memory somewhere else, but it's
2137 // still under 2Gb so we can use it. Next time, ask
2138 // for memory right after the place we just got some
2139 mmap_32bit_base = (StgWord8*)result + size;
2140 }
2141 }
2142 } else {
2143 if ((W_)result > 0x80000000) {
2144 // oops, we were given memory over 2Gb
2145 // ... try allocating memory somewhere else?;
2146 debugTrace(DEBUG_linker,"MAP_32BIT didn't work; gave us %lu bytes at 0x%p", bytes, result);
2147 munmap(result, size);
2148
2149 // Set a base address and try again... (guess: 1Gb)
2150 mmap_32bit_base = (void*)0x40000000;
2151 goto mmap_again;
2152 }
2153 }
2154 #endif
2155
2156 IF_DEBUG(linker, debugBelch("mmapForLinker: mapped %" FMT_Word " bytes starting at %p\n", (W_)size, result));
2157 IF_DEBUG(linker, debugBelch("mmapForLinker: done\n"));
2158 return result;
2159 }
2160 #endif // USE_MMAP
2161
2162
2163 void freeObjectCode (ObjectCode *oc)
2164 {
2165 #ifdef USE_MMAP
2166 int pagesize, size, r;
2167
2168 pagesize = getpagesize();
2169 size = ROUND_UP(oc->fileSize, pagesize);
2170
2171 r = munmap(oc->image, size);
2172 if (r == -1) {
2173 sysErrorBelch("munmap");
2174 }
2175
2176 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2177 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2178 if (!USE_CONTIGUOUS_MMAP)
2179 {
2180 munmap(oc->symbol_extras,
2181 ROUND_UP(sizeof(SymbolExtra) * oc->n_symbol_extras, pagesize));
2182 }
2183 #endif
2184 #endif
2185
2186 #else
2187
2188 #ifndef mingw32_HOST_OS
2189 stgFree(oc->image);
2190 #else
2191 VirtualFree(oc->image - PEi386_IMAGE_OFFSET, 0, MEM_RELEASE);
2192 #endif
2193
2194 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2195 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2196 stgFree(oc->symbol_extras);
2197 #endif
2198 #endif
2199
2200 #endif
2201
2202 stgFree(oc->fileName);
2203 stgFree(oc->archiveMemberName);
2204 stgFree(oc);
2205 }
2206
2207
2208 static ObjectCode*
2209 mkOc( pathchar *path, char *image, int imageSize,
2210 char *archiveMemberName
2211 #ifndef USE_MMAP
2212 #ifdef darwin_HOST_OS
2213 , int misalignment
2214 #endif
2215 #endif
2216 ) {
2217 ObjectCode* oc;
2218
2219 IF_DEBUG(linker, debugBelch("mkOc: start\n"));
2220 oc = stgMallocBytes(sizeof(ObjectCode), "loadArchive(oc)");
2221
2222 # if defined(OBJFORMAT_ELF)
2223 oc->formatName = "ELF";
2224 # elif defined(OBJFORMAT_PEi386)
2225 oc->formatName = "PEi386";
2226 # elif defined(OBJFORMAT_MACHO)
2227 oc->formatName = "Mach-O";
2228 # else
2229 stgFree(oc);
2230 barf("loadObj: not implemented on this platform");
2231 # endif
2232
2233 oc->image = image;
2234 oc->fileName = pathdup(path);
2235
2236 if (archiveMemberName) {
2237 oc->archiveMemberName = stgMallocBytes( strlen(archiveMemberName)+1, "loadObj" );
2238 strcpy(oc->archiveMemberName, archiveMemberName);
2239 }
2240 else {
2241 oc->archiveMemberName = NULL;
2242 }
2243
2244 oc->fileSize = imageSize;
2245 oc->symbols = NULL;
2246 oc->sections = NULL;
2247 oc->proddables = NULL;
2248 oc->stable_ptrs = NULL;
2249
2250 #ifndef USE_MMAP
2251 #ifdef darwin_HOST_OS
2252 oc->misalignment = misalignment;
2253 #endif
2254 #endif
2255
2256 /* chain it onto the list of objects */
2257 oc->next = objects;
2258 objects = oc;
2259
2260 IF_DEBUG(linker, debugBelch("mkOc: done\n"));
2261 return oc;
2262 }
2263
2264 HsInt
2265 loadArchive( pathchar *path )
2266 {
2267 ObjectCode* oc;
2268 char *image;
2269 int memberSize;
2270 FILE *f;
2271 int n;
2272 size_t thisFileNameSize;
2273 char *fileName;
2274 size_t fileNameSize;
2275 int isObject, isGnuIndex;
2276 char tmp[20];
2277 char *gnuFileIndex;
2278 int gnuFileIndexSize;
2279 #if defined(darwin_HOST_OS)
2280 int i;
2281 uint32_t nfat_arch, nfat_offset, cputype, cpusubtype;
2282 #if defined(i386_HOST_ARCH)
2283 const uint32_t mycputype = CPU_TYPE_X86;
2284 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_ALL;
2285 #elif defined(x86_64_HOST_ARCH)
2286 const uint32_t mycputype = CPU_TYPE_X86_64;
2287 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_64_ALL;
2288 #elif defined(powerpc_HOST_ARCH)
2289 const uint32_t mycputype = CPU_TYPE_POWERPC;
2290 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2291 #elif defined(powerpc64_HOST_ARCH)
2292 const uint32_t mycputype = CPU_TYPE_POWERPC64;
2293 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2294 #else
2295 #error Unknown Darwin architecture
2296 #endif
2297 #if !defined(USE_MMAP)
2298 int misalignment;
2299 #endif
2300 #endif
2301
2302 IF_DEBUG(linker, debugBelch("loadArchive: start\n"));
2303 IF_DEBUG(linker, debugBelch("loadArchive: Loading archive `%" PATH_FMT" '\n", path));
2304
2305 gnuFileIndex = NULL;
2306 gnuFileIndexSize = 0;
2307
2308 fileNameSize = 32;
2309 fileName = stgMallocBytes(fileNameSize, "loadArchive(fileName)");
2310
2311 f = pathopen(path, WSTR("rb"));
2312 if (!f)
2313 barf("loadObj: can't read `%s'", path);
2314
2315 /* Check if this is an archive by looking for the magic "!<arch>\n"
2316 * string. Usually, if this fails, we barf and quit. On Darwin however,
2317 * we may have a fat archive, which contains archives for more than
2318 * one architecture. Fat archives start with the magic number 0xcafebabe,
2319 * always stored big endian. If we find a fat_header, we scan through
2320 * the fat_arch structs, searching through for one for our host
2321 * architecture. If a matching struct is found, we read the offset
2322 * of our archive data (nfat_offset) and seek forward nfat_offset bytes
2323 * from the start of the file.
2324 *
2325 * A subtlety is that all of the members of the fat_header and fat_arch
2326 * structs are stored big endian, so we need to call byte order
2327 * conversion functions.
2328 *
2329 * If we find the appropriate architecture in a fat archive, we gobble
2330 * its magic "!<arch>\n" string and continue processing just as if
2331 * we had a single architecture archive.
2332 */
2333
2334 n = fread ( tmp, 1, 8, f );
2335 if (n != 8)
2336 barf("loadArchive: Failed reading header from `%s'", path);
2337 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2338
2339 #if defined(darwin_HOST_OS)
2340 /* Not a standard archive, look for a fat archive magic number: */
2341 if (ntohl(*(uint32_t *)tmp) == FAT_MAGIC) {
2342 nfat_arch = ntohl(*(uint32_t *)(tmp + 4));
2343 IF_DEBUG(linker, debugBelch("loadArchive: found a fat archive containing %d architectures\n", nfat_arch));
2344 nfat_offset = 0;
2345
2346 for (i = 0; i < (int)nfat_arch; i++) {
2347 /* search for the right arch */
2348 n = fread( tmp, 1, 20, f );
2349 if (n != 8)
2350 barf("loadArchive: Failed reading arch from `%s'", path);
2351 cputype = ntohl(*(uint32_t *)tmp);
2352 cpusubtype = ntohl(*(uint32_t *)(tmp + 4));
2353
2354 if (cputype == mycputype && cpusubtype == mycpusubtype) {
2355 IF_DEBUG(linker, debugBelch("loadArchive: found my archive in a fat archive\n"));
2356 nfat_offset = ntohl(*(uint32_t *)(tmp + 8));
2357 break;
2358 }
2359 }
2360
2361 if (nfat_offset == 0) {
2362 barf ("loadArchive: searched %d architectures, but no host arch found", (int)nfat_arch);
2363 }
2364 else {
2365 n = fseek( f, nfat_offset, SEEK_SET );
2366 if (n != 0)
2367 barf("loadArchive: Failed to seek to arch in `%s'", path);
2368 n = fread ( tmp, 1, 8, f );
2369 if (n != 8)
2370 barf("loadArchive: Failed reading header from `%s'", path);
2371 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2372 barf("loadArchive: couldn't find archive in `%s' at offset %d", path, nfat_offset);
2373 }
2374 }
2375 }
2376 else {
2377 barf("loadArchive: Neither an archive, nor a fat archive: `%s'", path);
2378 }
2379
2380 #else
2381 barf("loadArchive: Not an archive: `%s'", path);
2382 #endif
2383 }
2384
2385 IF_DEBUG(linker, debugBelch("loadArchive: loading archive contents\n"));
2386
2387 while(1) {
2388 n = fread ( fileName, 1, 16, f );
2389 if (n != 16) {
2390 if (feof(f)) {
2391 IF_DEBUG(linker, debugBelch("loadArchive: EOF while reading from '%" PATH_FMT "'\n", path));
2392 break;
2393 }
2394 else {
2395 barf("loadArchive: Failed reading file name from `%s'", path);
2396 }
2397 }
2398
2399 #if defined(darwin_HOST_OS)
2400 if (strncmp(fileName, "!<arch>\n", 8) == 0) {
2401 IF_DEBUG(linker, debugBelch("loadArchive: found the start of another archive, breaking\n"));
2402 break;
2403 }
2404 #endif
2405
2406 n = fread ( tmp, 1, 12, f );
2407 if (n != 12)
2408 barf("loadArchive: Failed reading mod time from `%s'", path);
2409 n = fread ( tmp, 1, 6, f );
2410 if (n != 6)
2411 barf("loadArchive: Failed reading owner from `%s'", path);
2412 n = fread ( tmp, 1, 6, f );
2413 if (n != 6)
2414 barf("loadArchive: Failed reading group from `%s'", path);
2415 n = fread ( tmp, 1, 8, f );
2416 if (n != 8)
2417 barf("loadArchive: Failed reading mode from `%s'", path);
2418 n = fread ( tmp, 1, 10, f );
2419 if (n != 10)
2420 barf("loadArchive: Failed reading size from `%s'", path);
2421 tmp[10] = '\0';
2422 for (n = 0; isdigit(tmp[n]); n++);
2423 tmp[n] = '\0';
2424 memberSize = atoi(tmp);
2425
2426 IF_DEBUG(linker, debugBelch("loadArchive: size of this archive member is %d\n", memberSize));
2427 n = fread ( tmp, 1, 2, f );
2428 if (n != 2)
2429 barf("loadArchive: Failed reading magic from `%s'", path);
2430 if (strncmp(tmp, "\x60\x0A", 2) != 0)
2431 barf("loadArchive: Failed reading magic from `%s' at %ld. Got %c%c",
2432 path, ftell(f), tmp[0], tmp[1]);
2433
2434 isGnuIndex = 0;
2435 /* Check for BSD-variant large filenames */
2436 if (0 == strncmp(fileName, "#1/", 3)) {
2437 fileName[16] = '\0';
2438 if (isdigit(fileName[3])) {
2439 for (n = 4; isdigit(fileName[n]); n++);
2440 fileName[n] = '\0';
2441 thisFileNameSize = atoi(fileName + 3);
2442 memberSize -= thisFileNameSize;
2443 if (thisFileNameSize >= fileNameSize) {
2444 /* Double it to avoid potentially continually
2445 increasing it by 1 */
2446 fileNameSize = thisFileNameSize * 2;
2447 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2448 }
2449 n = fread ( fileName, 1, thisFileNameSize, f );
2450 if (n != (int)thisFileNameSize) {
2451 barf("loadArchive: Failed reading filename from `%s'",
2452 path);
2453 }
2454 fileName[thisFileNameSize] = 0;
2455
2456 /* On OS X at least, thisFileNameSize is the size of the
2457 fileName field, not the length of the fileName
2458 itself. */
2459 thisFileNameSize = strlen(fileName);
2460 }
2461 else {
2462 barf("loadArchive: BSD-variant filename size not found while reading filename from `%s'", path);
2463 }
2464 }
2465 /* Check for GNU file index file */
2466 else if (0 == strncmp(fileName, "//", 2)) {
2467 fileName[0] = '\0';
2468 thisFileNameSize = 0;
2469 isGnuIndex = 1;
2470 }
2471 /* Check for a file in the GNU file index */
2472 else if (fileName[0] == '/') {
2473 if (isdigit(fileName[1])) {
2474 int i;
2475
2476 for (n = 2; isdigit(fileName[n]); n++);
2477 fileName[n] = '\0';
2478 n = atoi(fileName + 1);
2479
2480 if (gnuFileIndex == NULL) {
2481 barf("loadArchive: GNU-variant filename without an index while reading from `%s'", path);
2482 }
2483 if (n < 0 || n > gnuFileIndexSize) {
2484 barf("loadArchive: GNU-variant filename offset %d out of range [0..%d] while reading filename from `%s'", n, gnuFileIndexSize, path);
2485 }
2486 if (n != 0 && gnuFileIndex[n - 1] != '\n') {
2487 barf("loadArchive: GNU-variant filename offset %d invalid (range [0..%d]) while reading filename from `%s'", n, gnuFileIndexSize, path);
2488 }
2489 for (i = n; gnuFileIndex[i] != '/'; i++);
2490 thisFileNameSize = i - n;
2491 if (thisFileNameSize >= fileNameSize) {
2492 /* Double it to avoid potentially continually
2493 increasing it by 1 */
2494 fileNameSize = thisFileNameSize * 2;
2495 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2496 }
2497 memcpy(fileName, gnuFileIndex + n, thisFileNameSize);
2498 fileName[thisFileNameSize] = '\0';
2499 }
2500 else if (fileName[1] == ' ') {
2501 fileName[0] = '\0';
2502 thisFileNameSize = 0;
2503 }
2504 else {
2505 barf("loadArchive: GNU-variant filename offset not found while reading filename from `%s'", path);
2506 }
2507 }
2508 /* Finally, the case where the filename field actually contains
2509 the filename */
2510 else {
2511 /* GNU ar terminates filenames with a '/', this allowing
2512 spaces in filenames. So first look to see if there is a
2513 terminating '/'. */
2514 for (thisFileNameSize = 0;
2515 thisFileNameSize < 16;
2516 thisFileNameSize++) {
2517 if (fileName[thisFileNameSize] == '/') {
2518 fileName[thisFileNameSize] = '\0';
2519 break;
2520 }
2521 }
2522 /* If we didn't find a '/', then a space teminates the
2523 filename. Note that if we don't find one, then
2524 thisFileNameSize ends up as 16, and we already have the
2525 '\0' at the end. */
2526 if (thisFileNameSize == 16) {
2527 for (thisFileNameSize = 0;
2528 thisFileNameSize < 16;
2529 thisFileNameSize++) {
2530 if (fileName[thisFileNameSize] == ' ') {
2531 fileName[thisFileNameSize] = '\0';
2532 break;
2533 }
2534 }
2535 }
2536 }
2537
2538 IF_DEBUG(linker,
2539 debugBelch("loadArchive: Found member file `%s'\n", fileName));
2540
2541 isObject = thisFileNameSize >= 2
2542 && fileName[thisFileNameSize - 2] == '.'
2543 && fileName[thisFileNameSize - 1] == 'o';
2544
2545 IF_DEBUG(linker, debugBelch("loadArchive: \tthisFileNameSize = %d\n", (int)thisFileNameSize));
2546 IF_DEBUG(linker, debugBelch("loadArchive: \tisObject = %d\n", isObject));
2547
2548 if (isObject) {
2549 char *archiveMemberName;
2550
2551 IF_DEBUG(linker, debugBelch("loadArchive: Member is an object file...loading...\n"));
2552
2553 /* We can't mmap from the archive directly, as object
2554 files need to be 8-byte aligned but files in .ar
2555 archives are 2-byte aligned. When possible we use mmap
2556 to get some anonymous memory, as on 64-bit platforms if
2557 we use malloc then we can be given memory above 2^32.
2558 In the mmap case we're probably wasting lots of space;
2559 we could do better. */
2560 #if defined(USE_MMAP)
2561 image = mmapForLinker(memberSize, MAP_ANONYMOUS, -1);
2562 #elif defined(mingw32_HOST_OS)
2563 // TODO: We would like to use allocateExec here, but allocateExec
2564 // cannot currently allocate blocks large enough.
2565 image = allocateImageAndTrampolines(
2566 #if defined(x86_64_HOST_ARCH)
2567 f, path, fileName,
2568 #endif
2569 memberSize);
2570 #elif defined(darwin_HOST_OS)
2571 /* See loadObj() */
2572 misalignment = machoGetMisalignment(f);
2573 image = stgMallocBytes(memberSize + misalignment, "loadArchive(image)");
2574 image += misalignment;
2575 #else
2576 image = stgMallocBytes(memberSize, "loadArchive(image)");
2577 #endif
2578 n = fread ( image, 1, memberSize, f );
2579 if (n != memberSize) {
2580 barf("loadArchive: error whilst reading `%s'", path);
2581 }
2582
2583 archiveMemberName = stgMallocBytes(pathlen(path) + thisFileNameSize + 3,
2584 "loadArchive(file)");
2585 sprintf(archiveMemberName, "%" PATH_FMT "(%.*s)",
2586 path, (int)thisFileNameSize, fileName);
2587
2588 oc = mkOc(path, image, memberSize, archiveMemberName
2589 #ifndef USE_MMAP
2590 #ifdef darwin_HOST_OS
2591 , misalignment
2592 #endif
2593 #endif
2594 );
2595
2596 stgFree(archiveMemberName);
2597
2598 if (0 == loadOc(oc)) {
2599 stgFree(fileName);
2600 return 0;
2601 }
2602 }
2603 else if (isGnuIndex) {
2604 if (gnuFileIndex != NULL) {
2605 barf("loadArchive: GNU-variant index found, but already have an index, while reading filename from `%s'", path);
2606 }
2607 IF_DEBUG(linker, debugBelch("loadArchive: Found GNU-variant file index\n"));
2608 #ifdef USE_MMAP
2609 gnuFileIndex = mmapForLinker(memberSize + 1, MAP_ANONYMOUS, -1);
2610 #else
2611 gnuFileIndex = stgMallocBytes(memberSize + 1, "loadArchive(image)");
2612 #endif
2613 n = fread ( gnuFileIndex, 1, memberSize, f );
2614 if (n != memberSize) {
2615 barf("loadArchive: error whilst reading `%s'", path);
2616 }
2617 gnuFileIndex[memberSize] = '/';
2618 gnuFileIndexSize = memberSize;
2619 }
2620 else {
2621 IF_DEBUG(linker, debugBelch("loadArchive: '%s' does not appear to be an object file\n", fileName));
2622 n = fseek(f, memberSize, SEEK_CUR);
2623 if (n != 0)
2624 barf("loadArchive: error whilst seeking by %d in `%s'",
2625 memberSize, path);
2626 }
2627
2628 /* .ar files are 2-byte aligned */
2629 if (memberSize % 2) {
2630 IF_DEBUG(linker, debugBelch("loadArchive: trying to read one pad byte\n"));
2631 n = fread ( tmp, 1, 1, f );
2632 if (n != 1) {
2633 if (feof(f)) {
2634 IF_DEBUG(linker, debugBelch("loadArchive: found EOF while reading one pad byte\n"));
2635 break;
2636 }
2637 else {
2638 barf("loadArchive: Failed reading padding from `%s'", path);
2639 }
2640 }
2641 IF_DEBUG(linker, debugBelch("loadArchive: successfully read one pad byte\n"));
2642 }
2643 IF_DEBUG(linker, debugBelch("loadArchive: reached end of archive loading while loop\n"));
2644 }
2645
2646 fclose(f);
2647
2648 stgFree(fileName);
2649 if (gnuFileIndex != NULL) {
2650 #ifdef USE_MMAP
2651 munmap(gnuFileIndex, gnuFileIndexSize + 1);
2652 #else
2653 stgFree(gnuFileIndex);
2654 #endif
2655 }
2656
2657 IF_DEBUG(linker, debugBelch("loadArchive: done\n"));
2658 return 1;
2659 }
2660
2661 /* -----------------------------------------------------------------------------
2662 * Load an obj (populate the global symbol table, but don't resolve yet)
2663 *
2664 * Returns: 1 if ok, 0 on error.
2665 */
2666 HsInt
2667 loadObj( pathchar *path )
2668 {
2669 ObjectCode* oc;
2670 char *image;
2671 int fileSize;
2672 struct_stat st;
2673 int r;
2674 #ifdef USE_MMAP
2675 int fd;
2676 #else
2677 FILE *f;
2678 # if defined(darwin_HOST_OS)
2679 int misalignment;
2680 # endif
2681 #endif
2682 IF_DEBUG(linker, debugBelch("loadObj %" PATH_FMT "\n", path));
2683
2684 initLinker();
2685
2686 /* debugBelch("loadObj %s\n", path ); */
2687
2688 /* Check that we haven't already loaded this object.
2689 Ignore requests to load multiple times */
2690 {
2691 ObjectCode *o;
2692 int is_dup = 0;
2693 for (o = objects; o; o = o->next) {
2694 if (0 == pathcmp(o->fileName, path)) {
2695 is_dup = 1;
2696 break; /* don't need to search further */
2697 }
2698 }
2699 if (is_dup) {
2700 IF_DEBUG(linker, debugBelch(
2701 "GHCi runtime linker: warning: looks like you're trying to load the\n"
2702 "same object file twice:\n"
2703 " %" PATH_FMT "\n"
2704 "GHCi will ignore this, but be warned.\n"
2705 , path));
2706 return 1; /* success */
2707 }
2708 }
2709
2710 r = pathstat(path, &st);
2711 if (r == -1) {
2712 IF_DEBUG(linker, debugBelch("File doesn't exist\n"));
2713 return 0;
2714 }
2715
2716 fileSize = st.st_size;
2717
2718 #ifdef USE_MMAP
2719 /* On many architectures malloc'd memory isn't executable, so we need to use mmap. */
2720
2721 #if defined(openbsd_HOST_OS)
2722 fd = open(path, O_RDONLY, S_IRUSR);
2723 #else
2724 fd = open(path, O_RDONLY);
2725 #endif
2726 if (fd == -1)
2727 barf("loadObj: can't open `%s'", path);
2728
2729 image = mmapForLinker(fileSize, 0, fd);
2730
2731 close(fd);
2732
2733 #else /* !USE_MMAP */
2734 /* load the image into memory */
2735 f = pathopen(path, WSTR("rb"));
2736 if (!f)
2737 barf("loadObj: can't read `%" PATH_FMT "'", path);
2738
2739 # if defined(mingw32_HOST_OS)
2740 // TODO: We would like to use allocateExec here, but allocateExec
2741 // cannot currently allocate blocks large enough.
2742 image = allocateImageAndTrampolines(
2743 #if defined(x86_64_HOST_ARCH)
2744 f, path, "itself",
2745 #endif
2746 fileSize);
2747 # elif defined(darwin_HOST_OS)
2748 // In a Mach-O .o file, all sections can and will be misaligned
2749 // if the total size of the headers is not a multiple of the
2750 // desired alignment. This is fine for .o files that only serve
2751 // as input for the static linker, but it's not fine for us,
2752 // as SSE (used by gcc for floating point) and Altivec require
2753 // 16-byte alignment.
2754 // We calculate the correct alignment from the header before
2755 // reading the file, and then we misalign image on purpose so
2756 // that the actual sections end up aligned again.
2757 misalignment = machoGetMisalignment(f);
2758 image = stgMallocBytes(fileSize + misalignment, "loadObj(image)");
2759 image += misalignment;
2760 # else
2761 image = stgMallocBytes(fileSize, "loadObj(image)");
2762 # endif
2763
2764 {
2765 int n;
2766 n = fread ( image, 1, fileSize, f );
2767 if (n != fileSize)
2768 barf("loadObj: error whilst reading `%s'", path);
2769 }
2770 fclose(f);
2771 #endif /* USE_MMAP */
2772
2773 oc = mkOc(path, image, fileSize, NULL
2774 #ifndef USE_MMAP
2775 #ifdef darwin_HOST_OS
2776 , misalignment
2777 #endif
2778 #endif
2779 );
2780
2781 return loadOc(oc);
2782 }
2783
2784 static HsInt
2785 loadOc( ObjectCode* oc ) {
2786 int r;
2787
2788 IF_DEBUG(linker, debugBelch("loadOc: start\n"));
2789
2790 # if defined(OBJFORMAT_MACHO) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH))
2791 r = ocAllocateSymbolExtras_MachO ( oc );
2792 if (!r) {
2793 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_MachO failed\n"));
2794 return r;
2795 }
2796 # elif defined(OBJFORMAT_ELF) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH))
2797 r = ocAllocateSymbolExtras_ELF ( oc );
2798 if (!r) {
2799 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_ELF failed\n"));
2800 return r;
2801 }
2802 # elif defined(OBJFORMAT_PEi386) && defined(x86_64_HOST_ARCH)
2803 ocAllocateSymbolExtras_PEi386 ( oc );
2804 #endif
2805
2806 /* verify the in-memory image */
2807 # if defined(OBJFORMAT_ELF)
2808 r = ocVerifyImage_ELF ( oc );
2809 # elif defined(OBJFORMAT_PEi386)
2810 r = ocVerifyImage_PEi386 ( oc );
2811 # elif defined(OBJFORMAT_MACHO)
2812 r = ocVerifyImage_MachO ( oc );
2813 # else
2814 barf("loadObj: no verify method");
2815 # endif
2816 if (!r) {
2817 IF_DEBUG(linker, debugBelch("loadOc: ocVerifyImage_* failed\n"));
2818 return r;
2819 }
2820
2821 /* build the symbol list for this image */
2822 # if defined(OBJFORMAT_ELF)
2823 r = ocGetNames_ELF ( oc );
2824 # elif defined(OBJFORMAT_PEi386)
2825 r = ocGetNames_PEi386 ( oc );
2826 # elif defined(OBJFORMAT_MACHO)
2827 r = ocGetNames_MachO ( oc );
2828 # else
2829 barf("loadObj: no getNames method");
2830 # endif
2831 if (!r) {
2832 IF_DEBUG(linker, debugBelch("loadOc: ocGetNames_* failed\n"));
2833 return r;
2834 }
2835
2836 /* loaded, but not resolved yet */
2837 oc->status = OBJECT_LOADED;
2838 IF_DEBUG(linker, debugBelch("loadOc: done.\n"));
2839
2840 return 1;
2841 }
2842
2843 /* -----------------------------------------------------------------------------
2844 * resolve all the currently unlinked objects in memory
2845 *
2846 * Returns: 1 if ok, 0 on error.
2847 */
2848 HsInt
2849 resolveObjs( void )
2850 {
2851 ObjectCode *oc;
2852 int r;
2853
2854 IF_DEBUG(linker, debugBelch("resolveObjs: start\n"));
2855 initLinker();
2856
2857 for (oc = objects; oc; oc = oc->next) {
2858 if (oc->status != OBJECT_RESOLVED) {
2859 # if defined(OBJFORMAT_ELF)
2860 r = ocResolve_ELF ( oc );
2861 # elif defined(OBJFORMAT_PEi386)
2862 r = ocResolve_PEi386 ( oc );
2863 # elif defined(OBJFORMAT_MACHO)
2864 r = ocResolve_MachO ( oc );
2865 # else
2866 barf("resolveObjs: not implemented on this platform");
2867 # endif
2868 if (!r) { return r; }
2869
2870 // run init/init_array/ctors/mod_init_func
2871
2872 loading_obj = oc; // tells foreignExportStablePtr what to do
2873 #if defined(OBJFORMAT_ELF)
2874 r = ocRunInit_ELF ( oc );
2875 #elif defined(OBJFORMAT_PEi386)
2876 r = ocRunInit_PEi386 ( oc );
2877 #elif defined(OBJFORMAT_MACHO)
2878 r = ocRunInit_MachO ( oc );
2879 #else
2880 barf("resolveObjs: initializers not implemented on this platform");
2881 #endif
2882 loading_obj = NULL;
2883
2884 if (!r) { return r; }
2885
2886 oc->status = OBJECT_RESOLVED;
2887 }
2888 }
2889 IF_DEBUG(linker, debugBelch("resolveObjs: done\n"));
2890 return 1;
2891 }
2892
2893 /* -----------------------------------------------------------------------------
2894 * delete an object from the pool
2895 */
2896 HsInt
2897 unloadObj( pathchar *path )
2898 {
2899 ObjectCode *oc, *prev, *next;
2900 HsBool unloadedAnyObj = HS_BOOL_FALSE;
2901
2902 ASSERT(symhash != NULL);
2903 ASSERT(objects != NULL);
2904
2905 initLinker();
2906
2907 IF_DEBUG(linker, debugBelch("unloadObj: %" PATH_FMT "\n", path));
2908
2909 prev = NULL;
2910 for (oc = objects; oc; prev = oc, oc = next) {
2911 next = oc->next;
2912
2913 if (!pathcmp(oc->fileName,path)) {
2914
2915 /* Remove all the mappings for the symbols within this
2916 * object..
2917 */
2918 {
2919 int i;
2920 for (i = 0; i < oc->n_symbols; i++) {
2921 if (oc->symbols[i] != NULL) {
2922 ghciRemoveSymbolTable(symhash, oc->symbols[i], oc);
2923 }
2924 }
2925 }
2926
2927 if (prev == NULL) {
2928 objects = oc->next;
2929 } else {
2930 prev->next = oc->next;
2931 }
2932 oc->next = unloaded_objects;
2933 unloaded_objects = oc;
2934
2935 // The data itself and a few other bits (oc->fileName,
2936 // oc->archiveMemberName) are kept until freeObjectCode(),
2937 // which is only called when it has been determined that
2938 // it is safe to unload the object.
2939 stgFree(oc->symbols);
2940
2941 {
2942 Section *s, *nexts;
2943
2944 for (s = oc->sections; s != NULL; s = nexts) {
2945 nexts = s->next;
2946 stgFree(s);
2947 }
2948 }
2949
2950 freeProddableBlocks(oc);
2951
2952 // Release any StablePtrs that were created when this
2953 // object module was initialized.
2954 {
2955 ForeignExportStablePtr *fe_ptr, *next;
2956
2957 for (fe_ptr = oc->stable_ptrs; fe_ptr != NULL; fe_ptr = next) {
2958 next = fe_ptr->next;
2959 freeStablePtr(fe_ptr->stable_ptr);
2960 stgFree(fe_ptr);
2961 }
2962 }
2963
2964 oc->status = OBJECT_UNLOADED;
2965
2966 /* This could be a member of an archive so continue
2967 * unloading other members. */
2968 unloadedAnyObj = HS_BOOL_TRUE;
2969 }
2970 }
2971
2972 if (unloadedAnyObj) {
2973 return 1;
2974 }
2975 else {
2976 errorBelch("unloadObj: can't find `%" PATH_FMT "' to unload", path);
2977 return 0;
2978 }
2979 }
2980
2981 /* -----------------------------------------------------------------------------
2982 * Sanity checking. For each ObjectCode, maintain a list of address ranges
2983 * which may be prodded during relocation, and abort if we try and write
2984 * outside any of these.
2985 */
2986 static void
2987 addProddableBlock ( ObjectCode* oc, void* start, int size )
2988 {
2989 ProddableBlock* pb
2990 = stgMallocBytes(sizeof(ProddableBlock), "addProddableBlock");
2991
2992 IF_DEBUG(linker, debugBelch("addProddableBlock: %p %p %d\n", oc, start, size));
2993 ASSERT(size > 0);
2994 pb->start = start;
2995 pb->size = size;
2996 pb->next = oc->proddables;
2997 oc->proddables = pb;
2998 }
2999
3000 static void
3001 checkProddableBlock (ObjectCode *oc, void *addr, size_t size )
3002 {
3003 ProddableBlock* pb;
3004
3005 for (pb = oc->proddables; pb != NULL; pb = pb->next) {
3006 char* s = (char*)(pb->start);
3007 char* e = s + pb->size;
3008 char* a = (char*)addr;
3009 if (a >= s && (a+size) <= e) return;
3010 }
3011 barf("checkProddableBlock: invalid fixup in runtime linker: %p", addr);
3012 }
3013
3014 static void freeProddableBlocks (ObjectCode *oc)
3015 {
3016 ProddableBlock *pb, *next;
3017
3018 for (pb = oc->proddables; pb != NULL; pb = next) {
3019 next = pb->next;
3020 stgFree(pb);
3021 }
3022 oc->proddables = NULL;
3023 }
3024
3025 /* -----------------------------------------------------------------------------
3026 * Section management.
3027 */
3028 static void
3029 addSection ( ObjectCode* oc, SectionKind kind,
3030 void* start, void* end )
3031 {
3032 Section* s = stgMallocBytes(sizeof(Section), "addSection");
3033 s->start = start;
3034 s->end = end;
3035 s->kind = kind;
3036 s->next = oc->sections;
3037 oc->sections = s;
3038
3039 IF_DEBUG(linker, debugBelch("addSection: %p-%p (size %lld), kind %d\n",
3040 start, ((char*)end)-1, ((long long)(size_t)end) - ((long long)(size_t)start) + 1, kind ));
3041 }
3042
3043
3044 /* --------------------------------------------------------------------------
3045 * Symbol Extras.
3046 * This is about allocating a small chunk of memory for every symbol in the
3047 * object file. We make sure that the SymboLExtras are always "in range" of
3048 * limited-range PC-relative instructions on various platforms by allocating
3049 * them right next to the object code itself.
3050 */
3051
3052 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3053 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3054
3055 /*
3056 ocAllocateSymbolExtras
3057
3058 Allocate additional space at the end of the object file image to make room
3059 for jump islands (powerpc, x86_64, arm) and GOT entries (x86_64).
3060
3061 PowerPC relative branch instructions have a 24 bit displacement field.
3062 As PPC code is always 4-byte-aligned, this yields a +-32MB range.
3063 If a particular imported symbol is outside this range, we have to redirect
3064 the jump to a short piece of new code that just loads the 32bit absolute
3065 address and jumps there.
3066 On x86_64, PC-relative jumps and PC-relative accesses to the GOT are limited
3067 to 32 bits (+-2GB).
3068
3069 This function just allocates space for one SymbolExtra for every
3070 undefined symbol in the object file. The code for the jump islands is
3071 filled in by makeSymbolExtra below.
3072 */
3073
3074 static int ocAllocateSymbolExtras( ObjectCode* oc, int count, int first )
3075 {
3076 #ifdef USE_MMAP
3077 int pagesize, n, m;
3078 #endif
3079 int aligned;
3080 #ifndef USE_MMAP
3081 int misalignment = 0;
3082 #ifdef darwin_HOST_OS
3083 misalignment = oc->misalignment;
3084 #endif
3085 #endif
3086
3087 if( count > 0 )
3088 {
3089 // round up to the nearest 4
3090 aligned = (oc->fileSize + 3) & ~3;
3091
3092 #ifdef USE_MMAP
3093 pagesize = getpagesize();
3094 n = ROUND_UP( oc->fileSize, pagesize );
3095 m = ROUND_UP( aligned + sizeof (SymbolExtra) * count, pagesize );
3096
3097 /* we try to use spare space at the end of the last page of the
3098 * image for the jump islands, but if there isn't enough space
3099 * then we have to map some (anonymously, remembering MAP_32BIT).
3100 */
3101 if( m > n ) // we need to allocate more pages
3102 {
3103 if (USE_CONTIGUOUS_MMAP)
3104 {
3105 /* Keep image and symbol_extras contiguous */
3106 void *new = mmapForLinker(n + (sizeof(SymbolExtra) * count),
3107 MAP_ANONYMOUS, -1);
3108 if (new)
3109 {
3110 memcpy(new, oc->image, oc->fileSize);
3111 munmap(oc->image, n);
3112 oc->image = new;
3113 oc->fileSize = n + (sizeof(SymbolExtra) * count);
3114 oc->symbol_extras = (SymbolExtra *) (oc->image + n);
3115 }
3116 else
3117 oc->symbol_extras = NULL;
3118 }
3119 else
3120 {
3121 oc->symbol_extras = mmapForLinker(sizeof(SymbolExtra) * count,
3122 MAP_ANONYMOUS, -1);
3123 }
3124 }
3125 else
3126 {
3127 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3128 }
3129 #else
3130 oc->image -= misalignment;
3131 oc->image = stgReallocBytes( oc->image,
3132 misalignment +
3133 aligned + sizeof (SymbolExtra) * count,
3134 "ocAllocateSymbolExtras" );
3135 oc->image += misalignment;
3136
3137 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3138 #endif /* USE_MMAP */
3139
3140 memset( oc->symbol_extras, 0, sizeof (SymbolExtra) * count );
3141 }
3142 else
3143 oc->symbol_extras = NULL;
3144
3145 oc->first_symbol_extra = first;
3146 oc->n_symbol_extras = count;
3147
3148 return 1;
3149 }
3150
3151 #endif
3152 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3153
3154 #if defined(arm_HOST_ARCH)
3155
3156 static void
3157 ocFlushInstructionCache( ObjectCode *oc )
3158 {
3159 // Object code
3160 __clear_cache(oc->image, oc->image + oc->fileSize);
3161 // Jump islands
3162 __clear_cache(oc->symbol_extras, &oc->symbol_extras[oc->n_symbol_extras]);
3163 }
3164
3165 #endif
3166
3167 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3168 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3169
3170 static SymbolExtra* makeSymbolExtra( ObjectCode* oc,
3171 unsigned long symbolNumber,
3172 unsigned long target )
3173 {
3174 SymbolExtra *extra;
3175
3176 ASSERT( symbolNumber >= oc->first_symbol_extra
3177 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3178
3179 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3180
3181 #ifdef powerpc_HOST_ARCH
3182 // lis r12, hi16(target)
3183 extra->jumpIsland.lis_r12 = 0x3d80;
3184 extra->jumpIsland.hi_addr = target >> 16;
3185
3186 // ori r12, r12, lo16(target)
3187 extra->jumpIsland.ori_r12_r12 = 0x618c;
3188 extra->jumpIsland.lo_addr = target & 0xffff;
3189
3190 // mtctr r12
3191 extra->jumpIsland.mtctr_r12 = 0x7d8903a6;
3192
3193 // bctr
3194 extra->jumpIsland.bctr = 0x4e800420;
3195 #endif
3196 #ifdef x86_64_HOST_ARCH
3197 // jmp *-14(%rip)
3198 static uint8_t jmp[] = { 0xFF, 0x25, 0xF2, 0xFF, 0xFF, 0xFF };
3199 extra->addr = target;
3200 memcpy(extra->jumpIsland, jmp, 6);
3201 #endif
3202
3203 return extra;
3204 }
3205
3206 #endif
3207 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3208
3209 #ifdef arm_HOST_ARCH
3210 static SymbolExtra* makeArmSymbolExtra( ObjectCode* oc,
3211 unsigned long symbolNumber,
3212 unsigned long target,
3213 int fromThumb,
3214 int toThumb )
3215 {
3216 SymbolExtra *extra;
3217
3218 ASSERT( symbolNumber >= oc->first_symbol_extra
3219 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3220
3221 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3222
3223 // Make sure instruction mode bit is set properly
3224 if (toThumb)
3225 target |= 1;
3226 else
3227 target &= ~1;
3228
3229 if (!fromThumb) {
3230 // In ARM encoding:
3231 // movw r12, #0
3232 // movt r12, #0
3233 // bx r12
3234 uint32_t code[] = { 0xe300c000, 0xe340c000, 0xe12fff1c };
3235
3236 // Patch lower half-word into movw
3237 code[0] |= ((target>>12) & 0xf) << 16;
3238 code[0] |= target & 0xfff;
3239 // Patch upper half-word into movt
3240 target >>= 16;
3241 code[1] |= ((target>>12) & 0xf) << 16;
3242 code[1] |= target & 0xfff;
3243
3244 memcpy(extra->jumpIsland, code, 12);
3245
3246 } else {
3247 // In Thumb encoding:
3248 // movw r12, #0
3249 // movt r12, #0
3250 // bx r12
3251 uint16_t code[] = { 0xf240, 0x0c00,
3252 0xf2c0, 0x0c00,
3253 0x4760 };
3254
3255 // Patch lower half-word into movw
3256 code[0] |= (target>>12) & 0xf;
3257 code[0] |= ((target>>11) & 0x1) << 10;
3258 code[1] |= ((target>>8) & 0x7) << 12;
3259 code[1] |= target & 0xff;
3260 // Patch upper half-word into movt
3261 target >>= 16;
3262 code[2] |= (target>>12) & 0xf;
3263 code[2] |= ((target>>11) & 0x1) << 10;
3264 code[3] |= ((target>>8) & 0x7) << 12;
3265 code[3] |= target & 0xff;
3266
3267 memcpy(extra->jumpIsland, code, 10);
3268 }
3269
3270 return extra;
3271 }
3272 #endif // arm_HOST_ARCH
3273
3274 /* --------------------------------------------------------------------------
3275 * PowerPC specifics (instruction cache flushing)
3276 * ------------------------------------------------------------------------*/
3277
3278 #ifdef powerpc_HOST_ARCH
3279 /*
3280 ocFlushInstructionCache
3281
3282 Flush the data & instruction caches.
3283 Because the PPC has split data/instruction caches, we have to
3284 do that whenever we modify code at runtime.
3285 */
3286
3287 static void
3288 ocFlushInstructionCacheFrom(void* begin, size_t length)
3289 {
3290 size_t n = (length + 3) / 4;
3291 unsigned long* p = begin;
3292
3293 while (n--)
3294 {
3295 __asm__ volatile ( "dcbf 0,%0\n\t"
3296 "sync\n\t"
3297 "icbi 0,%0"
3298 :
3299 : "r" (p)
3300 );
3301 p++;
3302 }
3303 __asm__ volatile ( "sync\n\t"
3304 "isync"
3305 );
3306 }
3307
3308 static void
3309 ocFlushInstructionCache( ObjectCode *oc )
3310 {
3311 /* The main object code */
3312 ocFlushInstructionCacheFrom(oc->image
3313 #ifdef darwin_HOST_OS
3314 + oc->misalignment
3315 #endif
3316 , oc->fileSize);
3317
3318 /* Jump Islands */
3319 ocFlushInstructionCacheFrom(oc->symbol_extras, sizeof(SymbolExtra) * oc->n_symbol_extras);
3320 }
3321 #endif /* powerpc_HOST_ARCH */
3322
3323
3324 /* --------------------------------------------------------------------------
3325 * PEi386 specifics (Win32 targets)
3326 * ------------------------------------------------------------------------*/
3327
3328 /* The information for this linker comes from
3329 Microsoft Portable Executable
3330 and Common Object File Format Specification
3331 revision 5.1 January 1998
3332 which SimonM says comes from the MS Developer Network CDs.
3333
3334 It can be found there (on older CDs), but can also be found
3335 online at:
3336
3337 http://www.microsoft.com/hwdev/hardware/PECOFF.asp
3338
3339 (this is Rev 6.0 from February 1999).
3340
3341 Things move, so if that fails, try searching for it via
3342
3343 http://www.google.com/search?q=PE+COFF+specification
3344
3345 The ultimate reference for the PE format is the Winnt.h
3346 header file that comes with the Platform SDKs; as always,
3347 implementations will drift wrt their documentation.
3348
3349 A good background article on the PE format is Matt Pietrek's
3350 March 1994 article in Microsoft System Journal (MSJ)
3351 (Vol.9, No. 3): "Peering Inside the PE: A Tour of the
3352 Win32 Portable Executable File Format." The info in there
3353 has recently been updated in a two part article in
3354 MSDN magazine, issues Feb and March 2002,
3355 "Inside Windows: An In-Depth Look into the Win32 Portable
3356 Executable File Format"
3357
3358 John Levine's book "Linkers and Loaders" contains useful
3359 info on PE too.
3360 */
3361
3362
3363 #if defined(OBJFORMAT_PEi386)
3364
3365
3366
3367 typedef unsigned char UChar;
3368 typedef unsigned short UInt16;
3369 typedef unsigned int UInt32;
3370 typedef int Int32;
3371 typedef unsigned long long int UInt64;
3372
3373
3374 typedef
3375 struct {
3376 UInt16 Machine;
3377 UInt16 NumberOfSections;
3378 UInt32 TimeDateStamp;
3379 UInt32 PointerToSymbolTable;
3380 UInt32 NumberOfSymbols;
3381 UInt16 SizeOfOptionalHeader;
3382 UInt16 Characteristics;
3383 }
3384 COFF_header;
3385
3386 #define sizeof_COFF_header 20
3387
3388
3389 typedef
3390 struct {
3391 UChar Name[8];
3392 UInt32 VirtualSize;
3393 UInt32 VirtualAddress;
3394 UInt32 SizeOfRawData;
3395 UInt32 PointerToRawData;
3396 UInt32 PointerToRelocations;
3397 UInt32 PointerToLinenumbers;
3398 UInt16 NumberOfRelocations;
3399 UInt16 NumberOfLineNumbers;
3400 UInt32 Characteristics;
3401 }
3402 COFF_section;
3403
3404 #define sizeof_COFF_section 40
3405
3406
3407 typedef
3408 struct {
3409 UChar Name[8];
3410 UInt32 Value;
3411 UInt16 SectionNumber;
3412 UInt16 Type;
3413 UChar StorageClass;
3414 UChar NumberOfAuxSymbols;
3415 }
3416 COFF_symbol;
3417
3418 #define sizeof_COFF_symbol 18
3419
3420
3421 typedef
3422 struct {
3423 UInt32 VirtualAddress;
3424 UInt32 SymbolTableIndex;
3425 UInt16 Type;
3426 }
3427 COFF_reloc;
3428
3429 #define sizeof_COFF_reloc 10
3430
3431
3432 /* From PE spec doc, section 3.3.2 */
3433 /* Note use of MYIMAGE_* since IMAGE_* are already defined in
3434 windows.h -- for the same purpose, but I want to know what I'm
3435 getting, here. */
3436 #define MYIMAGE_FILE_RELOCS_STRIPPED 0x0001
3437 #define MYIMAGE_FILE_EXECUTABLE_IMAGE 0x0002
3438 #define MYIMAGE_FILE_DLL 0x2000
3439 #define MYIMAGE_FILE_SYSTEM 0x1000
3440 #define MYIMAGE_FILE_BYTES_REVERSED_HI 0x8000
3441 #define MYIMAGE_FILE_BYTES_REVERSED_LO 0x0080
3442 #define MYIMAGE_FILE_32BIT_MACHINE 0x0100
3443
3444 /* From PE spec doc, section 5.4.2 and 5.4.4 */
3445 #define MYIMAGE_SYM_CLASS_EXTERNAL 2
3446 #define MYIMAGE_SYM_CLASS_STATIC 3
3447 #define MYIMAGE_SYM_UNDEFINED 0
3448
3449 /* From PE spec doc, section 4.1 */
3450 #define MYIMAGE_SCN_CNT_CODE 0x00000020
3451 #define MYIMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
3452 #define MYIMAGE_SCN_LNK_NRELOC_OVFL 0x01000000
3453
3454 /* From PE spec doc, section 5.2.1 */
3455 #define MYIMAGE_REL_I386_DIR32 0x0006
3456 #define MYIMAGE_REL_I386_REL32 0x0014
3457
3458 /* We assume file pointer is right at the
3459 beginning of COFF object.
3460 */
3461 static char *
3462 allocateImageAndTrampolines (
3463 #if defined(x86_64_HOST_ARCH)
3464 FILE* f, pathchar* arch_name, char* member_name,
3465 #endif
3466 int size )
3467 {
3468 char* image;
3469 #if defined(x86_64_HOST_ARCH)
3470 /* PeCoff contains number of symbols right in it's header, so
3471 we can reserve the room for symbolExtras right here. */
3472 COFF_header hdr;
3473 size_t n;
3474
3475 n = fread ( &hdr, 1, sizeof_COFF_header, f );
3476 if (n != sizeof( COFF_header ))
3477 barf("getNumberOfSymbols: error whilst reading `%s' header in `%S'",
3478 member_name, arch_name);
3479 fseek( f, -sizeof_COFF_header, SEEK_CUR );
3480
3481 /* We get back 8-byte aligned memory (is that guaranteed?), but
3482 the offsets to the sections within the file are all 4 mod 8
3483 (is that guaranteed?). We therefore need to offset the image
3484 by 4, so that all the pointers are 8-byte aligned, so that
3485 pointer tagging works. */
3486 /* For 32-bit case we don't need this, hence we use macro PEi386_IMAGE_OFFSET,
3487 which equals to 4 for 64-bit case and 0 for 32-bit case. */
3488 /* We allocate trampolines area for all symbols right behind
3489 image data, aligned on 8. */
3490 size = ((PEi386_IMAGE_OFFSET + size + 0x7) & ~0x7)
3491 + hdr.NumberOfSymbols * sizeof(SymbolExtra);
3492 #endif
3493 image = VirtualAlloc(NULL, size,
3494 MEM_RESERVE | MEM_COMMIT,
3495 PAGE_EXECUTE_READWRITE);
3496 return image + PEi386_IMAGE_OFFSET;
3497 }
3498
3499 /* We use myindex to calculate array addresses, rather than
3500 simply doing the normal subscript thing. That's because
3501 some of the above structs have sizes which are not
3502 a whole number of words. GCC rounds their sizes up to a
3503 whole number of words, which means that the address calcs
3504 arising from using normal C indexing or pointer arithmetic
3505 are just plain wrong. Sigh.
3506 */
3507 static UChar *
3508 myindex ( int scale, void* base, int index )
3509 {
3510 return
3511 ((UChar*)base) + scale * index;
3512 }
3513
3514
3515 static void
3516 printName ( UChar* name, UChar* strtab )
3517 {
3518 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3519 UInt32 strtab_offset = * (UInt32*)(name+4);
3520 debugBelch("%s", strtab + strtab_offset );
3521 } else {
3522 int i;
3523 for (i = 0; i < 8; i++) {
3524 if (name[i] == 0) break;
3525 debugBelch("%c", name[i] );
3526 }
3527 }
3528 }
3529
3530
3531 static void
3532 copyName ( UChar* name, UChar* strtab, UChar* dst, int dstSize )
3533 {
3534 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3535 UInt32 strtab_offset = * (UInt32*)(name+4);
3536 strncpy ( (char*)dst, (char*)strtab+strtab_offset, dstSize );
3537 dst[dstSize-1] = 0;
3538 } else {
3539 int i = 0;
3540 while (1) {
3541 if (i >= 8) break;
3542 if (name[i] == 0) break;
3543 dst[i] = name[i];
3544 i++;
3545 }
3546 dst[i] = 0;
3547 }
3548 }
3549
3550
3551 static UChar *
3552 cstring_from_COFF_symbol_name ( UChar* name, UChar* strtab )
3553 {
3554 UChar* newstr;
3555 /* If the string is longer than 8 bytes, look in the
3556 string table for it -- this will be correctly zero terminated.
3557 */
3558 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3559 UInt32 strtab_offset = * (UInt32*)(name+4);
3560 return ((UChar*)strtab) + strtab_offset;
3561 }
3562 /* Otherwise, if shorter than 8 bytes, return the original,
3563 which by defn is correctly terminated.
3564 */
3565 if (name[7]==0) return name;
3566 /* The annoying case: 8 bytes. Copy into a temporary
3567 (XXX which is never freed ...)
3568 */
3569 newstr = stgMallocBytes(9, "cstring_from_COFF_symbol_name");
3570 ASSERT(newstr);
3571 strncpy((char*)newstr,(char*)name,8);
3572 newstr[8] = 0;
3573 return newstr;
3574 }
3575
3576 /* Getting the name of a section is mildly tricky, so we make a
3577 function for it. Sadly, in one case we have to copy the string
3578 (when it is exactly 8 bytes long there's no trailing '\0'), so for
3579 consistency we *always* copy the string; the caller must free it
3580 */
3581 static char *
3582 cstring_from_section_name (UChar* name, UChar* strtab)
3583 {
3584 char *newstr;
3585
3586 if (name[0]=='/') {
3587 int strtab_offset = strtol((char*)name+1,NULL,10);
3588 int len = strlen(((char*)strtab) + strtab_offset);
3589
3590 newstr = stgMallocBytes(len+1, "cstring_from_section_symbol_name");
3591 strcpy((char*)newstr, (char*)((UChar*)strtab) + strtab_offset);
3592 return newstr;
3593 }
3594 else
3595 {
3596 newstr = stgMallocBytes(9, "cstring_from_section_symbol_name");
3597 ASSERT(newstr);
3598 strncpy((char*)newstr,(char*)name,8);
3599 newstr[8] = 0;
3600 return newstr;
3601 }
3602 }
3603
3604 /* Just compares the short names (first 8 chars) */
3605 static COFF_section *
3606 findPEi386SectionCalled ( ObjectCode* oc, UChar* name, UChar* strtab )
3607 {
3608 int i;
3609 rtsBool long_name = rtsFalse;
3610 COFF_header* hdr
3611 = (COFF_header*)(oc->image);
3612 COFF_section* sectab
3613 = (COFF_section*) (
3614 ((UChar*)(oc->image))
3615 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3616 );
3617 // String is longer than 8 bytes, swap in the proper
3618 // (NULL-terminated) version, and make a note that this
3619 // is a long name.
3620 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3621 UInt32 strtab_offset = * (UInt32*)(name+4);
3622 name = ((UChar*)strtab) + strtab_offset;
3623 long_name = rtsTrue;
3624 }
3625 for (i = 0; i < hdr->NumberOfSections; i++) {
3626 UChar* n1;
3627 UChar* n2;
3628 COFF_section* section_i
3629 = (COFF_section*)
3630 myindex ( sizeof_COFF_section, sectab, i );
3631 n1 = (UChar*) &(section_i->Name);
3632 n2 = name;
3633 // Long section names are prefixed with a slash, see
3634 // also cstring_from_section_name
3635 if (n1[0] == '/' && long_name) {
3636 // Long name check
3637 // We don't really want to make an assumption that the string
3638 // table indexes are the same, so we'll do a proper check.
3639 int n1_strtab_offset = strtol((char*)n1+1,NULL,10);
3640 n1 = (UChar*) (((char*)strtab) + n1_strtab_offset);
3641 if (0==strcmp((const char*)n1, (const char*)n2)) {
3642 return section_i;
3643 }
3644 } else if (n1[0] != '/' && !long_name) {
3645 // Short name check
3646 if (n1[0]==n2[0] && n1[1]==n2[1] && n1[2]==n2[2] &&
3647 n1[3]==n2[3] && n1[4]==n2[4] && n1[5]==n2[5] &&
3648 n1[6]==n2[6] && n1[7]==n2[7]) {
3649 return section_i;
3650 }
3651 } else {
3652 // guaranteed to mismatch, because we never attempt to link
3653 // in an executable where the section name may be truncated
3654 }
3655 }
3656
3657 return NULL;
3658 }
3659
3660 static void
3661 zapTrailingAtSign ( UChar* sym )
3662 {
3663 # define my_isdigit(c) ((c) >= '0' && (c) <= '9')
3664 int i, j;
3665 if (sym[0] == 0) return;
3666 i = 0;
3667 while (sym[i] != 0) i++;
3668 i--;
3669 j = i;
3670 while (j > 0 && my_isdigit(sym[j])) j--;
3671 if (j > 0 && sym[j] == '@' && j != i) sym[j] = 0;
3672 # undef my_isdigit
3673 }
3674
3675 static void *
3676 lookupSymbolInDLLs ( UChar *lbl )
3677 {
3678 OpenedDLL* o_dll;
3679 void *sym;
3680
3681 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
3682 /* debugBelch("look in %s for %s\n", o_dll->name, lbl); */
3683
3684 if (lbl[0] == '_') {
3685 /* HACK: if the name has an initial underscore, try stripping
3686 it off & look that up first. I've yet to verify whether there's
3687 a Rule that governs whether an initial '_' *should always* be
3688 stripped off when mapping from import lib name to the DLL name.
3689 */
3690 sym = GetProcAddress(o_dll->instance, (char*)(lbl+1));
3691 if (sym != NULL) {
3692 /*debugBelch("found %s in %s\n", lbl+1,o_dll->name);*/
3693 return sym;
3694 }
3695 }
3696
3697 /* Ticket #2283.
3698 Long description: http://support.microsoft.com/kb/132044
3699 tl;dr:
3700 If C/C++ compiler sees __declspec(dllimport) ... foo ...
3701 it generates call __imp_foo, and __imp_foo here has exactly
3702 the same semantics as in __imp_foo = GetProcAddress(..., "foo")
3703 */
3704 if (sym == NULL && strncmp ((const char*)lbl, "__imp_", 6) == 0) {
3705 sym = GetProcAddress(o_dll->instance, (char*)(lbl+6));
3706 if (sym != NULL) {
3707 errorBelch("warning: %s from %S is linked instead of %s",
3708 (char*)(lbl+6), o_dll->name, (char*)lbl);
3709 return sym;
3710 }
3711 }
3712
3713 sym = GetProcAddress(o_dll->instance, (char*)lbl);
3714 if (sym != NULL) {
3715 /*debugBelch("found %s in %s\n", lbl,o_dll->name);*/
3716 return sym;
3717 }
3718 }
3719 return NULL;
3720 }
3721
3722
3723 static int
3724 ocVerifyImage_PEi386 ( ObjectCode* oc )
3725 {
3726 int i;
3727 UInt32 j, noRelocs;
3728 COFF_header* hdr;
3729 COFF_section* sectab;
3730 COFF_symbol* symtab;
3731 UChar* strtab;
3732 /* debugBelch("\nLOADING %s\n", oc->fileName); */
3733 hdr = (COFF_header*)(oc->image);
3734 sectab = (COFF_section*) (
3735 ((UChar*)(oc->image))
3736 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3737 );
3738 symtab = (COFF_symbol*) (
3739 ((UChar*)(oc->image))
3740 + hdr->PointerToSymbolTable
3741 );
3742 strtab = ((UChar*)symtab)
3743 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3744
3745 #if defined(i386_HOST_ARCH)
3746 if (hdr->Machine != 0x14c) {
3747 errorBelch("%" PATH_FMT ": Not x86 PEi386", oc->fileName);
3748 return 0;
3749 }
3750 #elif defined(x86_64_HOST_ARCH)
3751 if (hdr->Machine != 0x8664) {
3752 errorBelch("%" PATH_FMT ": Not x86_64 PEi386", oc->fileName);
3753 return 0;
3754 }
3755 #else
3756 errorBelch("PEi386 not supported on this arch");
3757 #endif
3758
3759 if (hdr->SizeOfOptionalHeader != 0) {
3760 errorBelch("%" PATH_FMT ": PEi386 with nonempty optional header", oc->fileName);
3761 return 0;
3762 }
3763 if ( /* (hdr->Characteristics & MYIMAGE_FILE_RELOCS_STRIPPED) || */
3764 (hdr->Characteristics & MYIMAGE_FILE_EXECUTABLE_IMAGE) ||
3765 (hdr->Characteristics & MYIMAGE_FILE_DLL) ||
3766 (hdr->Characteristics & MYIMAGE_FILE_SYSTEM) ) {
3767 errorBelch("%" PATH_FMT ": Not a PEi386 object file", oc->fileName);
3768 return 0;
3769 }
3770 if ( (hdr->Characteristics & MYIMAGE_FILE_BYTES_REVERSED_HI)
3771 /* || !(hdr->Characteristics & MYIMAGE_FILE_32BIT_MACHINE) */ ) {
3772 errorBelch("%" PATH_FMT ": Invalid PEi386 word size or endiannness: %d",
3773 oc->fileName,
3774 (int)(hdr->Characteristics));
3775 return 0;
3776 }
3777 /* If the string table size is way crazy, this might indicate that
3778 there are more than 64k relocations, despite claims to the
3779 contrary. Hence this test. */
3780 /* debugBelch("strtab size %d\n", * (UInt32*)strtab); */
3781 #if 0
3782 if ( (*(UInt32*)strtab) > 600000 ) {
3783 /* Note that 600k has no special significance other than being
3784 big enough to handle the almost-2MB-sized lumps that
3785 constitute HSwin32*.o. */
3786 debugBelch("PEi386 object has suspiciously large string table; > 64k relocs?");
3787 return 0;
3788 }
3789 #endif
3790
3791 /* No further verification after this point; only debug printing. */
3792 i = 0;
3793 IF_DEBUG(linker, i=1);
3794 if (i == 0) return 1;
3795
3796 debugBelch( "sectab offset = %" FMT_Int "\n", ((UChar*)sectab) - ((UChar*)hdr) );
3797 debugBelch( "symtab offset = %" FMT_Int "\n", ((UChar*)symtab) - ((UChar*)hdr) );
3798 debugBelch( "strtab offset = %" FMT_Int "\n", ((UChar*)strtab) - ((UChar*)hdr) );
3799
3800 debugBelch("\n" );
3801 debugBelch( "Machine: 0x%x\n", (UInt32)(hdr->Machine) );
3802 debugBelch( "# sections: %d\n", (UInt32)(hdr->NumberOfSections) );
3803 debugBelch( "time/date: 0x%x\n", (UInt32)(hdr->TimeDateStamp) );
3804 debugBelch( "symtab offset: %d\n", (UInt32)(hdr->PointerToSymbolTable) );
3805 debugBelch( "# symbols: %d\n", (UInt32)(hdr->NumberOfSymbols) );
3806 debugBelch( "sz of opt hdr: %d\n", (UInt32)(hdr->SizeOfOptionalHeader) );
3807 debugBelch( "characteristics: 0x%x\n", (UInt32)(hdr->Characteristics) );
3808
3809 /* Print the section table. */
3810 debugBelch("\n" );
3811 for (i = 0; i < hdr->NumberOfSections; i++) {
3812 COFF_reloc* reltab;
3813 COFF_section* sectab_i
3814 = (COFF_section*)
3815 myindex ( sizeof_COFF_section, sectab, i );
3816 debugBelch(
3817 "\n"
3818 "section %d\n"
3819 " name `",
3820 i
3821 );
3822 printName ( sectab_i->Name, strtab );
3823 debugBelch(
3824 "'\n"
3825 " vsize %d\n"
3826 " vaddr %d\n"
3827 " data sz %d\n"
3828 " data off %d\n"
3829 " num rel %d\n"
3830 " off rel %d\n"
3831 " ptr raw 0x%x\n",
3832 sectab_i->VirtualSize,
3833 sectab_i->VirtualAddress,
3834 sectab_i->SizeOfRawData,
3835 sectab_i->PointerToRawData,
3836 sectab_i->NumberOfRelocations,
3837 sectab_i->PointerToRelocations,
3838 sectab_i->PointerToRawData
3839 );
3840 reltab = (COFF_reloc*) (
3841 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
3842 );
3843
3844 if ( sectab_i->Characteristics & MYIMAGE_SCN_LNK_NRELOC_OVFL ) {
3845 /* If the relocation field (a short) has overflowed, the
3846 * real count can be found in the first reloc entry.
3847 *
3848 * See Section 4.1 (last para) of the PE spec (rev6.0).
3849 */
3850 COFF_reloc* rel = (COFF_reloc*)
3851 myindex ( sizeof_COFF_reloc, reltab, 0 );
3852 noRelocs = rel->VirtualAddress;
3853 j = 1;
3854 } else {
3855 noRelocs = sectab_i->NumberOfRelocations;
3856 j = 0;
3857 }
3858
3859 for (; j < noRelocs; j++) {
3860 COFF_symbol* sym;
3861 COFF_reloc* rel = (COFF_reloc*)
3862 myindex ( sizeof_COFF_reloc, reltab, j );
3863 debugBelch(
3864 " type 0x%-4x vaddr 0x%-8x name `",
3865 (UInt32)rel->Type,
3866 rel->VirtualAddress );
3867 sym = (COFF_symbol*)
3868 myindex ( sizeof_COFF_symbol, symtab, rel->SymbolTableIndex );
3869 /* Hmm..mysterious looking offset - what's it for? SOF */
3870 printName ( sym->Name, strtab -10 );
3871 debugBelch("'\n" );
3872 }
3873
3874 debugBelch("\n" );
3875 }
3876 debugBelch("\n" );
3877 debugBelch("string table has size 0x%x\n", * (UInt32*)strtab );
3878 debugBelch("---START of string table---\n");
3879 for (i = 4; i < *(Int32*)strtab; i++) {
3880 if (strtab[i] == 0)
3881 debugBelch("\n"); else
3882 debugBelch("%c", strtab[i] );
3883 }
3884 debugBelch("--- END of string table---\n");
3885
3886 debugBelch("\n" );
3887 i = 0;
3888 while (1) {
3889 COFF_symbol* symtab_i;
3890 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
3891 symtab_i = (COFF_symbol*)
3892 myindex ( sizeof_COFF_symbol, symtab, i );
3893 debugBelch(
3894 "symbol %d\n"
3895 " name `",
3896 i
3897 );
3898 printName ( symtab_i->Name, strtab );
3899 debugBelch(
3900 "'\n"
3901 " value 0x%x\n"
3902 " 1+sec# %d\n"
3903 " type 0x%x\n"
3904 " sclass 0x%x\n"
3905 " nAux %d\n",
3906 symtab_i->Value,
3907 (Int32)(symtab_i->SectionNumber),
3908 (UInt32)symtab_i->Type,
3909 (UInt32)symtab_i->StorageClass,
3910 (UInt32)symtab_i->NumberOfAuxSymbols
3911 );
3912 i += symtab_i->NumberOfAuxSymbols;
3913 i++;
3914 }
3915
3916 debugBelch("\n" );
3917 return 1;
3918 }
3919
3920
3921 static int
3922 ocGetNames_PEi386 ( ObjectCode* oc )
3923 {
3924 COFF_header* hdr;
3925 COFF_section* sectab;
3926 COFF_symbol* symtab;
3927 UChar* strtab;
3928
3929 UChar* sname;
3930 void* addr;
3931 int i;
3932
3933 hdr = (COFF_header*)(oc->image);
3934 sectab = (COFF_section*) (
3935 ((UChar*)(oc->image))
3936 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3937 );
3938 symtab = (COFF_symbol*) (
3939 ((UChar*)(oc->image))
3940 + hdr->PointerToSymbolTable
3941 );
3942 strtab = ((UChar*)(oc->image))
3943 + hdr->PointerToSymbolTable
3944 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3945
3946 /* Allocate space for any (local, anonymous) .bss sections. */
3947
3948 for (i = 0; i < hdr->NumberOfSections; i++) {
3949 UInt32 bss_sz;
3950 UChar* zspace;
3951 COFF_section* sectab_i
3952 = (COFF_section*)
3953 myindex ( sizeof_COFF_section, sectab, i );
3954
3955 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3956
3957 if (0 != strcmp(secname, ".bss")) {
3958 stgFree(secname);
3959 continue;
3960 }
3961
3962 stgFree(secname);
3963
3964 /* sof 10/05: the PE spec text isn't too clear regarding what
3965 * the SizeOfRawData field is supposed to hold for object
3966 * file sections containing just uninitialized data -- for executables,
3967 * it is supposed to be zero; unclear what it's supposed to be
3968 * for object files. However, VirtualSize is guaranteed to be
3969 * zero for object files, which definitely suggests that SizeOfRawData
3970 * will be non-zero (where else would the size of this .bss section be
3971 * stored?) Looking at the COFF_section info for incoming object files,
3972 * this certainly appears to be the case.
3973 *
3974 * => I suspect we've been incorrectly handling .bss sections in (relocatable)
3975 * object files up until now. This turned out to bite us with ghc-6.4.1's use
3976 * of gcc-3.4.x, which has started to emit initially-zeroed-out local 'static'
3977 * variable decls into the .bss section. (The specific function in Q which
3978 * triggered this is libraries/base/cbits/dirUtils.c:__hscore_getFolderPath())
3979 */
3980 if (sectab_i->VirtualSize == 0 && sectab_i->SizeOfRawData == 0) continue;
3981 /* This is a non-empty .bss section. Allocate zeroed space for
3982 it, and set its PointerToRawData field such that oc->image +
3983 PointerToRawData == addr_of_zeroed_space. */
3984 bss_sz = sectab_i->VirtualSize;
3985 if ( bss_sz < sectab_i->SizeOfRawData) { bss_sz = sectab_i->SizeOfRawData; }
3986 zspace = stgCallocBytes(1, bss_sz, "ocGetNames_PEi386(anonymous bss)");
3987 sectab_i->PointerToRawData = ((UChar*)zspace) - ((UChar*)(oc->image));
3988 addProddableBlock(oc, zspace, bss_sz);
3989 /* debugBelch("BSS anon section at 0x%x\n", zspace); */
3990 }
3991
3992 /* Copy section information into the ObjectCode. */
3993
3994 for (i = 0; i < hdr->NumberOfSections; i++) {
3995 UChar* start;
3996 UChar* end;
3997 UInt32 sz;
3998
3999 SectionKind kind
4000 = SECTIONKIND_OTHER;
4001 COFF_section* sectab_i
4002 = (COFF_section*)
4003 myindex ( sizeof_COFF_section, sectab, i );
4004
4005 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
4006
4007 IF_DEBUG(linker, debugBelch("section name = %s\n", secname ));
4008
4009 # if 0
4010 /* I'm sure this is the Right Way to do it. However, the
4011 alternative of testing the sectab_i->Name field seems to
4012 work ok with Cygwin.
4013
4014 EZY: We should strongly consider using this style, because
4015 it lets us pick up sections that should be added (e.g.
4016 for a while the linker did not work due to missing .eh_frame
4017 in this section.)
4018 */
4019 if (sectab_i->Characteristics & MYIMAGE_SCN_CNT_CODE ||
4020 sectab_i->Characteristics & MYIMAGE_SCN_CNT_INITIALIZED_DATA)
4021 kind = SECTIONKIND_CODE_OR_RODATA;
4022 # endif
4023
4024 if (0==strcmp(".text",(char*)secname) ||
4025 0==strcmp(".text.startup",(char*)secname) ||
4026 0==strcmp(".rdata",(char*)secname)||
4027 0==strcmp(".eh_frame", (char*)secname)||