Grammar in comments
[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 #elif defined(OBJFORMAT_MACHO)
218 static int ocVerifyImage_MachO ( ObjectCode* oc );
219 static int ocGetNames_MachO ( ObjectCode* oc );
220 static int ocResolve_MachO ( ObjectCode* oc );
221 static int ocRunInit_MachO ( ObjectCode* oc );
222
223 #ifndef USE_MMAP
224 static int machoGetMisalignment( FILE * );
225 #endif
226 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
227 static int ocAllocateSymbolExtras_MachO ( ObjectCode* oc );
228 #endif
229 #ifdef powerpc_HOST_ARCH
230 static void machoInitSymbolsWithoutUnderscore( void );
231 #endif
232 #endif
233
234 static void freeProddableBlocks (ObjectCode *oc);
235
236 /* on x86_64 we have a problem with relocating symbol references in
237 * code that was compiled without -fPIC. By default, the small memory
238 * model is used, which assumes that symbol references can fit in a
239 * 32-bit slot. The system dynamic linker makes this work for
240 * references to shared libraries by either (a) allocating a jump
241 * table slot for code references, or (b) moving the symbol at load
242 * time (and copying its contents, if necessary) for data references.
243 *
244 * We unfortunately can't tell whether symbol references are to code
245 * or data. So for now we assume they are code (the vast majority
246 * are), and allocate jump-table slots. Unfortunately this will
247 * SILENTLY generate crashing code for data references. This hack is
248 * enabled by X86_64_ELF_NONPIC_HACK.
249 *
250 * One workaround is to use shared Haskell libraries. This is
251 * coming. Another workaround is to keep the static libraries but
252 * compile them with -fPIC, because that will generate PIC references
253 * to data which can be relocated. The PIC code is still too green to
254 * do this systematically, though.
255 *
256 * See bug #781
257 * See thread http://www.haskell.org/pipermail/cvs-ghc/2007-September/038458.html
258 *
259 * Naming Scheme for Symbol Macros
260 *
261 * SymI_*: symbol is internal to the RTS. It resides in an object
262 * file/library that is statically.
263 * SymE_*: symbol is external to the RTS library. It might be linked
264 * dynamically.
265 *
266 * Sym*_HasProto : the symbol prototype is imported in an include file
267 * or defined explicitly
268 * Sym*_NeedsProto: the symbol is undefined and we add a dummy
269 * default proto extern void sym(void);
270 */
271 #define X86_64_ELF_NONPIC_HACK 1
272
273 /* Link objects into the lower 2Gb on x86_64. GHC assumes the
274 * small memory model on this architecture (see gcc docs,
275 * -mcmodel=small).
276 *
277 * MAP_32BIT not available on OpenBSD/amd64
278 */
279 #if defined(x86_64_HOST_ARCH) && defined(MAP_32BIT)
280 #define TRY_MAP_32BIT MAP_32BIT
281 #else
282 #define TRY_MAP_32BIT 0
283 #endif
284
285 /*
286 * Due to the small memory model (see above), on x86_64 we have to map
287 * all our non-PIC object files into the low 2Gb of the address space
288 * (why 2Gb and not 4Gb? Because all addresses must be reachable
289 * using a 32-bit signed PC-relative offset). On Linux we can do this
290 * using the MAP_32BIT flag to mmap(), however on other OSs
291 * (e.g. *BSD, see #2063, and also on Linux inside Xen, see #2512), we
292 * can't do this. So on these systems, we have to pick a base address
293 * in the low 2Gb of the address space and try to allocate memory from
294 * there.
295 *
296 * We pick a default address based on the OS, but also make this
297 * configurable via an RTS flag (+RTS -xm)
298 */
299 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
300
301 #if defined(MAP_32BIT)
302 // Try to use MAP_32BIT
303 #define MMAP_32BIT_BASE_DEFAULT 0
304 #else
305 // A guess: 1Gb.
306 #define MMAP_32BIT_BASE_DEFAULT 0x40000000
307 #endif
308
309 static void *mmap_32bit_base = (void *)MMAP_32BIT_BASE_DEFAULT;
310 #endif
311
312 /* MAP_ANONYMOUS is MAP_ANON on some systems, e.g. OpenBSD */
313 #if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
314 #define MAP_ANONYMOUS MAP_ANON
315 #endif
316
317 /* -----------------------------------------------------------------------------
318 * Built-in symbols from the RTS
319 */
320
321 typedef struct _RtsSymbolVal {
322 char *lbl;
323 void *addr;
324 } RtsSymbolVal;
325
326 #define Maybe_Stable_Names SymI_HasProto(stg_mkWeakzh) \
327 SymI_HasProto(stg_mkWeakNoFinalizzerzh) \
328 SymI_HasProto(stg_addCFinalizzerToWeakzh) \
329 SymI_HasProto(stg_makeStableNamezh) \
330 SymI_HasProto(stg_finalizzeWeakzh)
331
332 #if !defined (mingw32_HOST_OS)
333 #define RTS_POSIX_ONLY_SYMBOLS \
334 SymI_HasProto(__hscore_get_saved_termios) \
335 SymI_HasProto(__hscore_set_saved_termios) \
336 SymI_HasProto(shutdownHaskellAndSignal) \
337 SymI_HasProto(signal_handlers) \
338 SymI_HasProto(stg_sig_install) \
339 SymI_HasProto(rtsTimerSignal) \
340 SymI_HasProto(atexit) \
341 SymI_NeedsProto(nocldstop)
342 #endif
343
344 #if defined (cygwin32_HOST_OS)
345 #define RTS_MINGW_ONLY_SYMBOLS /**/
346 /* Don't have the ability to read import libs / archives, so
347 * we have to stupidly list a lot of what libcygwin.a
348 * exports; sigh.
349 */
350 #define RTS_CYGWIN_ONLY_SYMBOLS \
351 SymI_HasProto(regfree) \
352 SymI_HasProto(regexec) \
353 SymI_HasProto(regerror) \
354 SymI_HasProto(regcomp) \
355 SymI_HasProto(__errno) \
356 SymI_HasProto(access) \
357 SymI_HasProto(chmod) \
358 SymI_HasProto(chdir) \
359 SymI_HasProto(close) \
360 SymI_HasProto(creat) \
361 SymI_HasProto(dup) \
362 SymI_HasProto(dup2) \
363 SymI_HasProto(fstat) \
364 SymI_HasProto(fcntl) \
365 SymI_HasProto(getcwd) \
366 SymI_HasProto(getenv) \
367 SymI_HasProto(lseek) \
368 SymI_HasProto(open) \
369 SymI_HasProto(fpathconf) \
370 SymI_HasProto(pathconf) \
371 SymI_HasProto(stat) \
372 SymI_HasProto(pow) \
373 SymI_HasProto(tanh) \
374 SymI_HasProto(cosh) \
375 SymI_HasProto(sinh) \
376 SymI_HasProto(atan) \
377 SymI_HasProto(acos) \
378 SymI_HasProto(asin) \
379 SymI_HasProto(tan) \
380 SymI_HasProto(cos) \
381 SymI_HasProto(sin) \
382 SymI_HasProto(exp) \
383 SymI_HasProto(log) \
384 SymI_HasProto(sqrt) \
385 SymI_HasProto(localtime_r) \
386 SymI_HasProto(gmtime_r) \
387 SymI_HasProto(mktime) \
388 SymI_NeedsProto(_imp___tzname) \
389 SymI_HasProto(gettimeofday) \
390 SymI_HasProto(timezone) \
391 SymI_HasProto(tcgetattr) \
392 SymI_HasProto(tcsetattr) \
393 SymI_HasProto(memcpy) \
394 SymI_HasProto(memmove) \
395 SymI_HasProto(realloc) \
396 SymI_HasProto(malloc) \
397 SymI_HasProto(free) \
398 SymI_HasProto(fork) \
399 SymI_HasProto(lstat) \
400 SymI_HasProto(isatty) \
401 SymI_HasProto(mkdir) \
402 SymI_HasProto(opendir) \
403 SymI_HasProto(readdir) \
404 SymI_HasProto(rewinddir) \
405 SymI_HasProto(closedir) \
406 SymI_HasProto(link) \
407 SymI_HasProto(mkfifo) \
408 SymI_HasProto(pipe) \
409 SymI_HasProto(read) \
410 SymI_HasProto(rename) \
411 SymI_HasProto(rmdir) \
412 SymI_HasProto(select) \
413 SymI_HasProto(system) \
414 SymI_HasProto(write) \
415 SymI_HasProto(strcmp) \
416 SymI_HasProto(strcpy) \
417 SymI_HasProto(strncpy) \
418 SymI_HasProto(strerror) \
419 SymI_HasProto(sigaddset) \
420 SymI_HasProto(sigemptyset) \
421 SymI_HasProto(sigprocmask) \
422 SymI_HasProto(umask) \
423 SymI_HasProto(uname) \
424 SymI_HasProto(unlink) \
425 SymI_HasProto(utime) \
426 SymI_HasProto(waitpid)
427
428 #elif defined(mingw32_HOST_OS)
429 #define RTS_POSIX_ONLY_SYMBOLS /**/
430 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
431
432 #if HAVE_GETTIMEOFDAY
433 #define RTS_MINGW_GETTIMEOFDAY_SYM SymI_NeedsProto(gettimeofday)
434 #else
435 #define RTS_MINGW_GETTIMEOFDAY_SYM /**/
436 #endif
437
438 #if HAVE___MINGW_VFPRINTF
439 #define RTS___MINGW_VFPRINTF_SYM SymI_HasProto(__mingw_vfprintf)
440 #else
441 #define RTS___MINGW_VFPRINTF_SYM /**/
442 #endif
443
444 #if defined(i386_HOST_ARCH)
445 #define RTS_WIN32_ONLY(X) X
446 #else
447 #define RTS_WIN32_ONLY(X) /**/
448 #endif
449
450 #if defined(x86_64_HOST_ARCH)
451 #define RTS_WIN64_ONLY(X) X
452 #else
453 #define RTS_WIN64_ONLY(X) /**/
454 #endif
455
456 /* These are statically linked from the mingw libraries into the ghc
457 executable, so we have to employ this hack. */
458 #define RTS_MINGW_ONLY_SYMBOLS \
459 SymI_HasProto(stg_asyncReadzh) \
460 SymI_HasProto(stg_asyncWritezh) \
461 SymI_HasProto(stg_asyncDoProczh) \
462 SymI_HasProto(getWin32ProgArgv) \
463 SymI_HasProto(setWin32ProgArgv) \
464 SymI_HasProto(memset) \
465 SymI_HasProto(inet_ntoa) \
466 SymI_HasProto(inet_addr) \
467 SymI_HasProto(htonl) \
468 SymI_HasProto(recvfrom) \
469 SymI_HasProto(listen) \
470 SymI_HasProto(bind) \
471 SymI_HasProto(shutdown) \
472 SymI_HasProto(connect) \
473 SymI_HasProto(htons) \
474 SymI_HasProto(ntohs) \
475 SymI_HasProto(getservbyname) \
476 SymI_HasProto(getservbyport) \
477 SymI_HasProto(getprotobynumber) \
478 SymI_HasProto(getprotobyname) \
479 SymI_HasProto(gethostbyname) \
480 SymI_HasProto(gethostbyaddr) \
481 SymI_HasProto(gethostname) \
482 SymI_HasProto(strcpy) \
483 SymI_HasProto(strncpy) \
484 SymI_HasProto(abort) \
485 RTS_WIN32_ONLY(SymI_NeedsProto(_alloca)) \
486 SymI_HasProto(isxdigit) \
487 SymI_HasProto(isupper) \
488 SymI_HasProto(ispunct) \
489 SymI_HasProto(islower) \
490 SymI_HasProto(isspace) \
491 SymI_HasProto(isprint) \
492 SymI_HasProto(isdigit) \
493 SymI_HasProto(iscntrl) \
494 SymI_HasProto(isalpha) \
495 SymI_HasProto(isalnum) \
496 SymI_HasProto(isascii) \
497 RTS___MINGW_VFPRINTF_SYM \
498 SymI_HasProto(strcmp) \
499 SymI_HasProto(memmove) \
500 SymI_HasProto(realloc) \
501 SymI_HasProto(malloc) \
502 SymI_HasProto(pow) \
503 SymI_HasProto(tanh) \
504 SymI_HasProto(cosh) \
505 SymI_HasProto(sinh) \
506 SymI_HasProto(atan) \
507 SymI_HasProto(acos) \
508 SymI_HasProto(asin) \
509 SymI_HasProto(tan) \
510 SymI_HasProto(cos) \
511 SymI_HasProto(sin) \
512 SymI_HasProto(exp) \
513 SymI_HasProto(log) \
514 SymI_HasProto(sqrt) \
515 SymI_HasProto(powf) \
516 SymI_HasProto(tanhf) \
517 SymI_HasProto(coshf) \
518 SymI_HasProto(sinhf) \
519 SymI_HasProto(atanf) \
520 SymI_HasProto(acosf) \
521 SymI_HasProto(asinf) \
522 SymI_HasProto(tanf) \
523 SymI_HasProto(cosf) \
524 SymI_HasProto(sinf) \
525 SymI_HasProto(expf) \
526 SymI_HasProto(logf) \
527 SymI_HasProto(sqrtf) \
528 SymI_HasProto(erf) \
529 SymI_HasProto(erfc) \
530 SymI_HasProto(erff) \
531 SymI_HasProto(erfcf) \
532 SymI_HasProto(memcpy) \
533 SymI_HasProto(rts_InstallConsoleEvent) \
534 SymI_HasProto(rts_ConsoleHandlerDone) \
535 SymI_NeedsProto(mktime) \
536 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___timezone)) \
537 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___tzname)) \
538 RTS_WIN32_ONLY(SymI_NeedsProto(_imp__tzname)) \
539 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___iob)) \
540 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___osver)) \
541 SymI_NeedsProto(localtime) \
542 SymI_NeedsProto(gmtime) \
543 SymI_NeedsProto(opendir) \
544 SymI_NeedsProto(readdir) \
545 SymI_NeedsProto(rewinddir) \
546 RTS_WIN32_ONLY(SymI_NeedsProto(_imp____mb_cur_max)) \
547 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___pctype)) \
548 RTS_WIN32_ONLY(SymI_NeedsProto(__chkstk)) \
549 RTS_WIN64_ONLY(SymI_NeedsProto(__imp___iob_func)) \
550 RTS_WIN64_ONLY(SymI_NeedsProto(___chkstk_ms)) \
551 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_localeconv)) \
552 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_islower)) \
553 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isspace)) \
554 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isxdigit)) \
555 RTS_WIN64_ONLY(SymI_HasProto(close)) \
556 RTS_WIN64_ONLY(SymI_HasProto(read)) \
557 RTS_WIN64_ONLY(SymI_HasProto(dup)) \
558 RTS_WIN64_ONLY(SymI_HasProto(dup2)) \
559 RTS_WIN64_ONLY(SymI_HasProto(write)) \
560 SymI_NeedsProto(getpid) \
561 RTS_WIN64_ONLY(SymI_HasProto(access)) \
562 SymI_HasProto(chmod) \
563 RTS_WIN64_ONLY(SymI_HasProto(creat)) \
564 RTS_WIN64_ONLY(SymI_HasProto(umask)) \
565 SymI_HasProto(unlink) \
566 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__errno)) \
567 RTS_WIN64_ONLY(SymI_NeedsProto(ftruncate64)) \
568 RTS_WIN64_ONLY(SymI_HasProto(setmode)) \
569 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wstat64)) \
570 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__fstat64)) \
571 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wsopen)) \
572 RTS_WIN64_ONLY(SymI_HasProto(__imp__environ)) \
573 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileAttributesA)) \
574 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileInformationByHandle)) \
575 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileType)) \
576 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetLastError)) \
577 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceFrequency)) \
578 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceCounter)) \
579 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetTickCount)) \
580 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WaitForSingleObject)) \
581 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekConsoleInputA)) \
582 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ReadConsoleInputA)) \
583 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekNamedPipe)) \
584 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__isatty)) \
585 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_select)) \
586 RTS_WIN64_ONLY(SymI_HasProto(isatty)) \
587 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__get_osfhandle)) \
588 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetConsoleMode)) \
589 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetConsoleMode)) \
590 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FlushConsoleInputBuffer)) \
591 RTS_WIN64_ONLY(SymI_HasProto(free)) \
592 RTS_WIN64_ONLY(SymI_NeedsProto(raise)) \
593 RTS_WIN64_ONLY(SymI_NeedsProto(_getpid)) \
594 RTS_WIN64_ONLY(SymI_HasProto(getc)) \
595 RTS_WIN64_ONLY(SymI_HasProto(ungetc)) \
596 RTS_WIN64_ONLY(SymI_HasProto(puts)) \
597 RTS_WIN64_ONLY(SymI_HasProto(putc)) \
598 RTS_WIN64_ONLY(SymI_HasProto(putchar)) \
599 RTS_WIN64_ONLY(SymI_HasProto(fputc)) \
600 RTS_WIN64_ONLY(SymI_HasProto(fread)) \
601 RTS_WIN64_ONLY(SymI_HasProto(fwrite)) \
602 RTS_WIN64_ONLY(SymI_HasProto(ferror)) \
603 RTS_WIN64_ONLY(SymI_HasProto(printf)) \
604 RTS_WIN64_ONLY(SymI_HasProto(fprintf)) \
605 RTS_WIN64_ONLY(SymI_HasProto(sprintf)) \
606 RTS_WIN64_ONLY(SymI_HasProto(vsprintf)) \
607 RTS_WIN64_ONLY(SymI_HasProto(sscanf)) \
608 RTS_WIN64_ONLY(SymI_HasProto(ldexp)) \
609 RTS_WIN64_ONLY(SymI_HasProto(strlen)) \
610 RTS_WIN64_ONLY(SymI_HasProto(strnlen)) \
611 RTS_WIN64_ONLY(SymI_HasProto(strchr)) \
612 RTS_WIN64_ONLY(SymI_HasProto(strtol)) \
613 RTS_WIN64_ONLY(SymI_HasProto(strerror)) \
614 RTS_WIN64_ONLY(SymI_HasProto(memchr)) \
615 RTS_WIN64_ONLY(SymI_HasProto(memcmp)) \
616 RTS_WIN64_ONLY(SymI_HasProto(wcscpy)) \
617 RTS_WIN64_ONLY(SymI_HasProto(wcslen)) \
618 RTS_WIN64_ONLY(SymI_HasProto(_lseeki64)) \
619 RTS_WIN64_ONLY(SymI_HasProto(_wchmod)) \
620 RTS_WIN64_ONLY(SymI_HasProto(closesocket)) \
621 RTS_WIN64_ONLY(SymI_HasProto(send)) \
622 RTS_WIN64_ONLY(SymI_HasProto(recv)) \
623 RTS_WIN64_ONLY(SymI_HasProto(bsearch)) \
624 RTS_WIN64_ONLY(SymI_HasProto(CommandLineToArgvW)) \
625 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmap)) \
626 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmapIndirect)) \
627 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleBitmap)) \
628 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBPatternBrushPt)) \
629 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBitmap)) \
630 RTS_WIN64_ONLY(SymI_HasProto(SetBitmapDimensionEx)) \
631 RTS_WIN64_ONLY(SymI_HasProto(GetBitmapDimensionEx)) \
632 RTS_WIN64_ONLY(SymI_HasProto(GetStockObject)) \
633 RTS_WIN64_ONLY(SymI_HasProto(GetObjectW)) \
634 RTS_WIN64_ONLY(SymI_HasProto(DeleteObject)) \
635 RTS_WIN64_ONLY(SymI_HasProto(SetDIBits)) \
636 RTS_WIN64_ONLY(SymI_HasProto(GetDIBits)) \
637 RTS_WIN64_ONLY(SymI_HasProto(CreateSolidBrush)) \
638 RTS_WIN64_ONLY(SymI_HasProto(CreateHatchBrush)) \
639 RTS_WIN64_ONLY(SymI_HasProto(CreatePatternBrush)) \
640 RTS_WIN64_ONLY(SymI_HasProto(CreateFontW)) \
641 RTS_WIN64_ONLY(SymI_HasProto(AngleArc)) \
642 RTS_WIN64_ONLY(SymI_HasProto(Arc)) \
643 RTS_WIN64_ONLY(SymI_HasProto(ArcTo)) \
644 RTS_WIN64_ONLY(SymI_HasProto(BeginPath)) \
645 RTS_WIN64_ONLY(SymI_HasProto(BitBlt)) \
646 RTS_WIN64_ONLY(SymI_HasProto(CancelDC)) \
647 RTS_WIN64_ONLY(SymI_HasProto(Chord)) \
648 RTS_WIN64_ONLY(SymI_HasProto(CloseFigure)) \
649 RTS_WIN64_ONLY(SymI_HasProto(CombineRgn)) \
650 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleDC)) \
651 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgn)) \
652 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgnIndirect)) \
653 RTS_WIN64_ONLY(SymI_HasProto(CreatePen)) \
654 RTS_WIN64_ONLY(SymI_HasProto(CreatePolygonRgn)) \
655 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgn)) \
656 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgnIndirect)) \
657 RTS_WIN64_ONLY(SymI_HasProto(CreateRoundRectRgn)) \
658 RTS_WIN64_ONLY(SymI_HasProto(DeleteDC)) \
659 RTS_WIN64_ONLY(SymI_HasProto(Ellipse)) \
660 RTS_WIN64_ONLY(SymI_HasProto(EndPath)) \
661 RTS_WIN64_ONLY(SymI_HasProto(EqualRgn)) \
662 RTS_WIN64_ONLY(SymI_HasProto(ExtSelectClipRgn)) \
663 RTS_WIN64_ONLY(SymI_HasProto(FillPath)) \
664 RTS_WIN64_ONLY(SymI_HasProto(FillRgn)) \
665 RTS_WIN64_ONLY(SymI_HasProto(FlattenPath)) \
666 RTS_WIN64_ONLY(SymI_HasProto(FrameRgn)) \
667 RTS_WIN64_ONLY(SymI_HasProto(GetArcDirection)) \
668 RTS_WIN64_ONLY(SymI_HasProto(GetBkColor)) \
669 RTS_WIN64_ONLY(SymI_HasProto(GetBkMode)) \
670 RTS_WIN64_ONLY(SymI_HasProto(GetBrushOrgEx)) \
671 RTS_WIN64_ONLY(SymI_HasProto(GetCurrentObject)) \
672 RTS_WIN64_ONLY(SymI_HasProto(GetDCOrgEx)) \
673 RTS_WIN64_ONLY(SymI_HasProto(GetGraphicsMode)) \
674 RTS_WIN64_ONLY(SymI_HasProto(GetMiterLimit)) \
675 RTS_WIN64_ONLY(SymI_HasProto(GetPolyFillMode)) \
676 RTS_WIN64_ONLY(SymI_HasProto(GetRgnBox)) \
677 RTS_WIN64_ONLY(SymI_HasProto(GetStretchBltMode)) \
678 RTS_WIN64_ONLY(SymI_HasProto(GetTextAlign)) \
679 RTS_WIN64_ONLY(SymI_HasProto(GetTextCharacterExtra)) \
680 RTS_WIN64_ONLY(SymI_HasProto(GetTextColor)) \
681 RTS_WIN64_ONLY(SymI_HasProto(GetTextExtentPoint32W)) \
682 RTS_WIN64_ONLY(SymI_HasProto(InvertRgn)) \
683 RTS_WIN64_ONLY(SymI_HasProto(LineTo)) \
684 RTS_WIN64_ONLY(SymI_HasProto(MaskBlt)) \
685 RTS_WIN64_ONLY(SymI_HasProto(MoveToEx)) \
686 RTS_WIN64_ONLY(SymI_HasProto(OffsetRgn)) \
687 RTS_WIN64_ONLY(SymI_HasProto(PaintRgn)) \
688 RTS_WIN64_ONLY(SymI_HasProto(PathToRegion)) \
689 RTS_WIN64_ONLY(SymI_HasProto(Pie)) \
690 RTS_WIN64_ONLY(SymI_HasProto(PlgBlt)) \
691 RTS_WIN64_ONLY(SymI_HasProto(PolyBezier)) \
692 RTS_WIN64_ONLY(SymI_HasProto(PolyBezierTo)) \
693 RTS_WIN64_ONLY(SymI_HasProto(Polygon)) \
694 RTS_WIN64_ONLY(SymI_HasProto(Polyline)) \
695 RTS_WIN64_ONLY(SymI_HasProto(PolylineTo)) \
696 RTS_WIN64_ONLY(SymI_HasProto(PtInRegion)) \
697 RTS_WIN64_ONLY(SymI_HasProto(Rectangle)) \
698 RTS_WIN64_ONLY(SymI_HasProto(RectInRegion)) \
699 RTS_WIN64_ONLY(SymI_HasProto(RestoreDC)) \
700 RTS_WIN64_ONLY(SymI_HasProto(RoundRect)) \
701 RTS_WIN64_ONLY(SymI_HasProto(SaveDC)) \
702 RTS_WIN64_ONLY(SymI_HasProto(SelectClipPath)) \
703 RTS_WIN64_ONLY(SymI_HasProto(SelectClipRgn)) \
704 RTS_WIN64_ONLY(SymI_HasProto(SelectObject)) \
705 RTS_WIN64_ONLY(SymI_HasProto(SelectPalette)) \
706 RTS_WIN64_ONLY(SymI_HasProto(SetArcDirection)) \
707 RTS_WIN64_ONLY(SymI_HasProto(SetBkColor)) \
708 RTS_WIN64_ONLY(SymI_HasProto(SetBkMode)) \
709 RTS_WIN64_ONLY(SymI_HasProto(SetBrushOrgEx)) \
710 RTS_WIN64_ONLY(SymI_HasProto(SetGraphicsMode)) \
711 RTS_WIN64_ONLY(SymI_HasProto(SetMiterLimit)) \
712 RTS_WIN64_ONLY(SymI_HasProto(SetPolyFillMode)) \
713 RTS_WIN64_ONLY(SymI_HasProto(SetStretchBltMode)) \
714 RTS_WIN64_ONLY(SymI_HasProto(SetTextAlign)) \
715 RTS_WIN64_ONLY(SymI_HasProto(SetTextCharacterExtra)) \
716 RTS_WIN64_ONLY(SymI_HasProto(SetTextColor)) \
717 RTS_WIN64_ONLY(SymI_HasProto(StretchBlt)) \
718 RTS_WIN64_ONLY(SymI_HasProto(StrokeAndFillPath)) \
719 RTS_WIN64_ONLY(SymI_HasProto(StrokePath)) \
720 RTS_WIN64_ONLY(SymI_HasProto(TextOutW)) \
721 RTS_WIN64_ONLY(SymI_HasProto(timeGetTime)) \
722 RTS_WIN64_ONLY(SymI_HasProto(WidenPath)) \
723 RTS_WIN64_ONLY(SymI_HasProto(GetFileSecurityW)) \
724 RTS_WIN64_ONLY(SymI_HasProto(RegCloseKey)) \
725 RTS_WIN64_ONLY(SymI_HasProto(RegConnectRegistryW)) \
726 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyExW)) \
727 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyW)) \
728 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteKeyW)) \
729 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteValueW)) \
730 RTS_WIN64_ONLY(SymI_HasProto(RegEnumKeyW)) \
731 RTS_WIN64_ONLY(SymI_HasProto(RegEnumValueW)) \
732 RTS_WIN64_ONLY(SymI_HasProto(RegFlushKey)) \
733 RTS_WIN64_ONLY(SymI_HasProto(RegLoadKeyW)) \
734 RTS_WIN64_ONLY(SymI_HasProto(RegNotifyChangeKeyValue)) \
735 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyExW)) \
736 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyW)) \
737 RTS_WIN64_ONLY(SymI_HasProto(RegQueryInfoKeyW)) \
738 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueExW)) \
739 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueW)) \
740 RTS_WIN64_ONLY(SymI_HasProto(RegReplaceKeyW)) \
741 RTS_WIN64_ONLY(SymI_HasProto(RegRestoreKeyW)) \
742 RTS_WIN64_ONLY(SymI_HasProto(RegSaveKeyW)) \
743 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueExW)) \
744 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueW)) \
745 RTS_WIN64_ONLY(SymI_HasProto(RegUnLoadKeyW)) \
746 RTS_WIN64_ONLY(SymI_NeedsProto(SHGetFolderPathW)) \
747 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetWindowLongPtrW)) \
748 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetWindowLongPtrW)) \
749 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_MenuItemFromPoint)) \
750 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPoint)) \
751 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPointEx)) \
752 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DeleteObject)) \
753 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_UnmapViewOfFile)) \
754 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CloseHandle)) \
755 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FreeLibrary)) \
756 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetMessageW)) \
757 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TranslateMessage)) \
758 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DispatchMessageW)) \
759 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DefWindowProcW)) \
760 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetDIBits)) \
761 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalAlloc)) \
762 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalFree)) \
763 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateFileW)) \
764 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WriteFile)) \
765 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateCompatibleBitmap)) \
766 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SelectObject)) \
767 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_Polygon)) \
768 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FormatMessageW)) \
769 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__localtime64)) \
770 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__tzname)) \
771 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__timezone)) \
772 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreatePipe)) \
773 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetHandleInformation)) \
774 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetStdHandle)) \
775 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetCurrentProcess)) \
776 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DuplicateHandle)) \
777 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateProcessW)) \
778 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TerminateProcess)) \
779 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__open_osfhandle)) \
780 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetExitCodeProcess)) \
781 RTS_MINGW_GETTIMEOFDAY_SYM \
782 SymI_NeedsProto(closedir)
783
784 #else
785 #define RTS_MINGW_ONLY_SYMBOLS /**/
786 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
787 #endif
788
789
790 #if defined(darwin_HOST_OS) && HAVE_PRINTF_LDBLSTUB
791 #define RTS_DARWIN_ONLY_SYMBOLS \
792 SymI_NeedsProto(asprintf$LDBLStub) \
793 SymI_NeedsProto(err$LDBLStub) \
794 SymI_NeedsProto(errc$LDBLStub) \
795 SymI_NeedsProto(errx$LDBLStub) \
796 SymI_NeedsProto(fprintf$LDBLStub) \
797 SymI_NeedsProto(fscanf$LDBLStub) \
798 SymI_NeedsProto(fwprintf$LDBLStub) \
799 SymI_NeedsProto(fwscanf$LDBLStub) \
800 SymI_NeedsProto(printf$LDBLStub) \
801 SymI_NeedsProto(scanf$LDBLStub) \
802 SymI_NeedsProto(snprintf$LDBLStub) \
803 SymI_NeedsProto(sprintf$LDBLStub) \
804 SymI_NeedsProto(sscanf$LDBLStub) \
805 SymI_NeedsProto(strtold$LDBLStub) \
806 SymI_NeedsProto(swprintf$LDBLStub) \
807 SymI_NeedsProto(swscanf$LDBLStub) \
808 SymI_NeedsProto(syslog$LDBLStub) \
809 SymI_NeedsProto(vasprintf$LDBLStub) \
810 SymI_NeedsProto(verr$LDBLStub) \
811 SymI_NeedsProto(verrc$LDBLStub) \
812 SymI_NeedsProto(verrx$LDBLStub) \
813 SymI_NeedsProto(vfprintf$LDBLStub) \
814 SymI_NeedsProto(vfscanf$LDBLStub) \
815 SymI_NeedsProto(vfwprintf$LDBLStub) \
816 SymI_NeedsProto(vfwscanf$LDBLStub) \
817 SymI_NeedsProto(vprintf$LDBLStub) \
818 SymI_NeedsProto(vscanf$LDBLStub) \
819 SymI_NeedsProto(vsnprintf$LDBLStub) \
820 SymI_NeedsProto(vsprintf$LDBLStub) \
821 SymI_NeedsProto(vsscanf$LDBLStub) \
822 SymI_NeedsProto(vswprintf$LDBLStub) \
823 SymI_NeedsProto(vswscanf$LDBLStub) \
824 SymI_NeedsProto(vsyslog$LDBLStub) \
825 SymI_NeedsProto(vwarn$LDBLStub) \
826 SymI_NeedsProto(vwarnc$LDBLStub) \
827 SymI_NeedsProto(vwarnx$LDBLStub) \
828 SymI_NeedsProto(vwprintf$LDBLStub) \
829 SymI_NeedsProto(vwscanf$LDBLStub) \
830 SymI_NeedsProto(warn$LDBLStub) \
831 SymI_NeedsProto(warnc$LDBLStub) \
832 SymI_NeedsProto(warnx$LDBLStub) \
833 SymI_NeedsProto(wcstold$LDBLStub) \
834 SymI_NeedsProto(wprintf$LDBLStub) \
835 SymI_NeedsProto(wscanf$LDBLStub)
836 #else
837 #define RTS_DARWIN_ONLY_SYMBOLS
838 #endif
839
840 #ifndef SMP
841 # define MAIN_CAP_SYM SymI_HasProto(MainCapability)
842 #else
843 # define MAIN_CAP_SYM
844 #endif
845
846 #if !defined(mingw32_HOST_OS)
847 #define RTS_USER_SIGNALS_SYMBOLS \
848 SymI_HasProto(setIOManagerControlFd) \
849 SymI_HasProto(setIOManagerWakeupFd) \
850 SymI_HasProto(ioManagerWakeup) \
851 SymI_HasProto(blockUserSignals) \
852 SymI_HasProto(unblockUserSignals)
853 #else
854 #define RTS_USER_SIGNALS_SYMBOLS \
855 SymI_HasProto(ioManagerWakeup) \
856 SymI_HasProto(sendIOManagerEvent) \
857 SymI_HasProto(readIOManagerEvent) \
858 SymI_HasProto(getIOManagerEvent) \
859 SymI_HasProto(console_handler)
860 #endif
861
862 #define RTS_LIBFFI_SYMBOLS \
863 SymE_NeedsProto(ffi_prep_cif) \
864 SymE_NeedsProto(ffi_call) \
865 SymE_NeedsProto(ffi_type_void) \
866 SymE_NeedsProto(ffi_type_float) \
867 SymE_NeedsProto(ffi_type_double) \
868 SymE_NeedsProto(ffi_type_sint64) \
869 SymE_NeedsProto(ffi_type_uint64) \
870 SymE_NeedsProto(ffi_type_sint32) \
871 SymE_NeedsProto(ffi_type_uint32) \
872 SymE_NeedsProto(ffi_type_sint16) \
873 SymE_NeedsProto(ffi_type_uint16) \
874 SymE_NeedsProto(ffi_type_sint8) \
875 SymE_NeedsProto(ffi_type_uint8) \
876 SymE_NeedsProto(ffi_type_pointer)
877
878 #ifdef TABLES_NEXT_TO_CODE
879 #define RTS_RET_SYMBOLS /* nothing */
880 #else
881 #define RTS_RET_SYMBOLS \
882 SymI_HasProto(stg_enter_ret) \
883 SymI_HasProto(stg_gc_fun_ret) \
884 SymI_HasProto(stg_ap_v_ret) \
885 SymI_HasProto(stg_ap_f_ret) \
886 SymI_HasProto(stg_ap_d_ret) \
887 SymI_HasProto(stg_ap_l_ret) \
888 SymI_HasProto(stg_ap_v16_ret) \
889 SymI_HasProto(stg_ap_v32_ret) \
890 SymI_HasProto(stg_ap_v64_ret) \
891 SymI_HasProto(stg_ap_n_ret) \
892 SymI_HasProto(stg_ap_p_ret) \
893 SymI_HasProto(stg_ap_pv_ret) \
894 SymI_HasProto(stg_ap_pp_ret) \
895 SymI_HasProto(stg_ap_ppv_ret) \
896 SymI_HasProto(stg_ap_ppp_ret) \
897 SymI_HasProto(stg_ap_pppv_ret) \
898 SymI_HasProto(stg_ap_pppp_ret) \
899 SymI_HasProto(stg_ap_ppppp_ret) \
900 SymI_HasProto(stg_ap_pppppp_ret)
901 #endif
902
903 /* Modules compiled with -ticky may mention ticky counters */
904 /* This list should marry up with the one in $(TOP)/includes/stg/Ticky.h */
905 #define RTS_TICKY_SYMBOLS \
906 SymI_NeedsProto(ticky_entry_ctrs) \
907 SymI_NeedsProto(top_ct) \
908 \
909 SymI_HasProto(ENT_VIA_NODE_ctr) \
910 SymI_HasProto(ENT_STATIC_THK_SINGLE_ctr) \
911 SymI_HasProto(ENT_STATIC_THK_MANY_ctr) \
912 SymI_HasProto(ENT_DYN_THK_SINGLE_ctr) \
913 SymI_HasProto(ENT_DYN_THK_MANY_ctr) \
914 SymI_HasProto(ENT_STATIC_FUN_DIRECT_ctr) \
915 SymI_HasProto(ENT_DYN_FUN_DIRECT_ctr) \
916 SymI_HasProto(ENT_STATIC_CON_ctr) \
917 SymI_HasProto(ENT_DYN_CON_ctr) \
918 SymI_HasProto(ENT_STATIC_IND_ctr) \
919 SymI_HasProto(ENT_DYN_IND_ctr) \
920 SymI_HasProto(ENT_PERM_IND_ctr) \
921 SymI_HasProto(ENT_PAP_ctr) \
922 SymI_HasProto(ENT_AP_ctr) \
923 SymI_HasProto(ENT_AP_STACK_ctr) \
924 SymI_HasProto(ENT_BH_ctr) \
925 SymI_HasProto(ENT_LNE_ctr) \
926 SymI_HasProto(UNKNOWN_CALL_ctr) \
927 SymI_HasProto(SLOW_CALL_fast_v16_ctr) \
928 SymI_HasProto(SLOW_CALL_fast_v_ctr) \
929 SymI_HasProto(SLOW_CALL_fast_f_ctr) \
930 SymI_HasProto(SLOW_CALL_fast_d_ctr) \
931 SymI_HasProto(SLOW_CALL_fast_l_ctr) \
932 SymI_HasProto(SLOW_CALL_fast_n_ctr) \
933 SymI_HasProto(SLOW_CALL_fast_p_ctr) \
934 SymI_HasProto(SLOW_CALL_fast_pv_ctr) \
935 SymI_HasProto(SLOW_CALL_fast_pp_ctr) \
936 SymI_HasProto(SLOW_CALL_fast_ppv_ctr) \
937 SymI_HasProto(SLOW_CALL_fast_ppp_ctr) \
938 SymI_HasProto(SLOW_CALL_fast_pppv_ctr) \
939 SymI_HasProto(SLOW_CALL_fast_pppp_ctr) \
940 SymI_HasProto(SLOW_CALL_fast_ppppp_ctr) \
941 SymI_HasProto(SLOW_CALL_fast_pppppp_ctr) \
942 SymI_HasProto(VERY_SLOW_CALL_ctr) \
943 SymI_HasProto(ticky_slow_call_unevald) \
944 SymI_HasProto(SLOW_CALL_ctr) \
945 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_ctr) \
946 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_CHUNKS_ctr) \
947 SymI_HasProto(KNOWN_CALL_ctr) \
948 SymI_HasProto(KNOWN_CALL_TOO_FEW_ARGS_ctr) \
949 SymI_HasProto(KNOWN_CALL_EXTRA_ARGS_ctr) \
950 SymI_HasProto(SLOW_CALL_FUN_TOO_FEW_ctr) \
951 SymI_HasProto(SLOW_CALL_FUN_CORRECT_ctr) \
952 SymI_HasProto(SLOW_CALL_FUN_TOO_MANY_ctr) \
953 SymI_HasProto(SLOW_CALL_PAP_TOO_FEW_ctr) \
954 SymI_HasProto(SLOW_CALL_PAP_CORRECT_ctr) \
955 SymI_HasProto(SLOW_CALL_PAP_TOO_MANY_ctr) \
956 SymI_HasProto(SLOW_CALL_UNEVALD_ctr) \
957 SymI_HasProto(UPDF_OMITTED_ctr) \
958 SymI_HasProto(UPDF_PUSHED_ctr) \
959 SymI_HasProto(CATCHF_PUSHED_ctr) \
960 SymI_HasProto(UPDF_RCC_PUSHED_ctr) \
961 SymI_HasProto(UPDF_RCC_OMITTED_ctr) \
962 SymI_HasProto(UPD_SQUEEZED_ctr) \
963 SymI_HasProto(UPD_CON_IN_NEW_ctr) \
964 SymI_HasProto(UPD_CON_IN_PLACE_ctr) \
965 SymI_HasProto(UPD_PAP_IN_NEW_ctr) \
966 SymI_HasProto(UPD_PAP_IN_PLACE_ctr) \
967 SymI_HasProto(ALLOC_HEAP_ctr) \
968 SymI_HasProto(ALLOC_HEAP_tot) \
969 SymI_HasProto(HEAP_CHK_ctr) \
970 SymI_HasProto(STK_CHK_ctr) \
971 SymI_HasProto(ALLOC_RTS_ctr) \
972 SymI_HasProto(ALLOC_RTS_tot) \
973 SymI_HasProto(ALLOC_FUN_ctr) \
974 SymI_HasProto(ALLOC_FUN_adm) \
975 SymI_HasProto(ALLOC_FUN_gds) \
976 SymI_HasProto(ALLOC_FUN_slp) \
977 SymI_HasProto(UPD_NEW_IND_ctr) \
978 SymI_HasProto(UPD_NEW_PERM_IND_ctr) \
979 SymI_HasProto(UPD_OLD_IND_ctr) \
980 SymI_HasProto(UPD_OLD_PERM_IND_ctr) \
981 SymI_HasProto(UPD_CAF_BH_UPDATABLE_ctr) \
982 SymI_HasProto(UPD_CAF_BH_SINGLE_ENTRY_ctr) \
983 SymI_HasProto(GC_SEL_ABANDONED_ctr) \
984 SymI_HasProto(GC_SEL_MINOR_ctr) \
985 SymI_HasProto(GC_SEL_MAJOR_ctr) \
986 SymI_HasProto(GC_FAILED_PROMOTION_ctr) \
987 SymI_HasProto(ALLOC_UP_THK_ctr) \
988 SymI_HasProto(ALLOC_SE_THK_ctr) \
989 SymI_HasProto(ALLOC_THK_adm) \
990 SymI_HasProto(ALLOC_THK_gds) \
991 SymI_HasProto(ALLOC_THK_slp) \
992 SymI_HasProto(ALLOC_CON_ctr) \
993 SymI_HasProto(ALLOC_CON_adm) \
994 SymI_HasProto(ALLOC_CON_gds) \
995 SymI_HasProto(ALLOC_CON_slp) \
996 SymI_HasProto(ALLOC_TUP_ctr) \
997 SymI_HasProto(ALLOC_TUP_adm) \
998 SymI_HasProto(ALLOC_TUP_gds) \
999 SymI_HasProto(ALLOC_TUP_slp) \
1000 SymI_HasProto(ALLOC_BH_ctr) \
1001 SymI_HasProto(ALLOC_BH_adm) \
1002 SymI_HasProto(ALLOC_BH_gds) \
1003 SymI_HasProto(ALLOC_BH_slp) \
1004 SymI_HasProto(ALLOC_PRIM_ctr) \
1005 SymI_HasProto(ALLOC_PRIM_adm) \
1006 SymI_HasProto(ALLOC_PRIM_gds) \
1007 SymI_HasProto(ALLOC_PRIM_slp) \
1008 SymI_HasProto(ALLOC_PAP_ctr) \
1009 SymI_HasProto(ALLOC_PAP_adm) \
1010 SymI_HasProto(ALLOC_PAP_gds) \
1011 SymI_HasProto(ALLOC_PAP_slp) \
1012 SymI_HasProto(ALLOC_TSO_ctr) \
1013 SymI_HasProto(ALLOC_TSO_adm) \
1014 SymI_HasProto(ALLOC_TSO_gds) \
1015 SymI_HasProto(ALLOC_TSO_slp) \
1016 SymI_HasProto(RET_NEW_ctr) \
1017 SymI_HasProto(RET_OLD_ctr) \
1018 SymI_HasProto(RET_UNBOXED_TUP_ctr) \
1019 SymI_HasProto(RET_SEMI_loads_avoided)
1020
1021
1022 // On most platforms, the garbage collector rewrites references
1023 // to small integer and char objects to a set of common, shared ones.
1024 //
1025 // We don't do this when compiling to Windows DLLs at the moment because
1026 // it doesn't support cross package data references well.
1027 //
1028 #if defined(COMPILING_WINDOWS_DLL)
1029 #define RTS_INTCHAR_SYMBOLS
1030 #else
1031 #define RTS_INTCHAR_SYMBOLS \
1032 SymI_HasProto(stg_CHARLIKE_closure) \
1033 SymI_HasProto(stg_INTLIKE_closure)
1034 #endif
1035
1036
1037 #define RTS_SYMBOLS \
1038 Maybe_Stable_Names \
1039 RTS_TICKY_SYMBOLS \
1040 SymI_HasProto(StgReturn) \
1041 SymI_HasProto(stg_gc_noregs) \
1042 SymI_HasProto(stg_ret_v_info) \
1043 SymI_HasProto(stg_ret_p_info) \
1044 SymI_HasProto(stg_ret_n_info) \
1045 SymI_HasProto(stg_ret_f_info) \
1046 SymI_HasProto(stg_ret_d_info) \
1047 SymI_HasProto(stg_ret_l_info) \
1048 SymI_HasProto(stg_gc_prim_p) \
1049 SymI_HasProto(stg_gc_prim_pp) \
1050 SymI_HasProto(stg_gc_prim_n) \
1051 SymI_HasProto(stg_enter_info) \
1052 SymI_HasProto(__stg_gc_enter_1) \
1053 SymI_HasProto(stg_gc_unpt_r1) \
1054 SymI_HasProto(stg_gc_unbx_r1) \
1055 SymI_HasProto(stg_gc_f1) \
1056 SymI_HasProto(stg_gc_d1) \
1057 SymI_HasProto(stg_gc_l1) \
1058 SymI_HasProto(stg_gc_pp) \
1059 SymI_HasProto(stg_gc_ppp) \
1060 SymI_HasProto(stg_gc_pppp) \
1061 SymI_HasProto(__stg_gc_fun) \
1062 SymI_HasProto(stg_gc_fun_info) \
1063 SymI_HasProto(stg_yield_noregs) \
1064 SymI_HasProto(stg_yield_to_interpreter) \
1065 SymI_HasProto(stg_block_noregs) \
1066 SymI_HasProto(stg_block_takemvar) \
1067 SymI_HasProto(stg_block_readmvar) \
1068 SymI_HasProto(stg_block_putmvar) \
1069 MAIN_CAP_SYM \
1070 SymI_HasProto(MallocFailHook) \
1071 SymI_HasProto(OnExitHook) \
1072 SymI_HasProto(OutOfHeapHook) \
1073 SymI_HasProto(StackOverflowHook) \
1074 SymI_HasProto(addDLL) \
1075 SymI_HasProto(__int_encodeDouble) \
1076 SymI_HasProto(__word_encodeDouble) \
1077 SymI_HasProto(__int_encodeFloat) \
1078 SymI_HasProto(__word_encodeFloat) \
1079 SymI_HasProto(stg_atomicallyzh) \
1080 SymI_HasProto(barf) \
1081 SymI_HasProto(debugBelch) \
1082 SymI_HasProto(errorBelch) \
1083 SymI_HasProto(sysErrorBelch) \
1084 SymI_HasProto(stg_getMaskingStatezh) \
1085 SymI_HasProto(stg_maskAsyncExceptionszh) \
1086 SymI_HasProto(stg_maskUninterruptiblezh) \
1087 SymI_HasProto(stg_catchzh) \
1088 SymI_HasProto(stg_catchRetryzh) \
1089 SymI_HasProto(stg_catchSTMzh) \
1090 SymI_HasProto(stg_checkzh) \
1091 SymI_HasProto(closure_flags) \
1092 SymI_HasProto(cmp_thread) \
1093 SymI_HasProto(createAdjustor) \
1094 SymI_HasProto(stg_decodeDoublezu2Intzh) \
1095 SymI_HasProto(stg_decodeFloatzuIntzh) \
1096 SymI_HasProto(defaultsHook) \
1097 SymI_HasProto(stg_delayzh) \
1098 SymI_HasProto(stg_deRefWeakzh) \
1099 SymI_HasProto(stg_deRefStablePtrzh) \
1100 SymI_HasProto(dirty_MUT_VAR) \
1101 SymI_HasProto(dirty_TVAR) \
1102 SymI_HasProto(stg_forkzh) \
1103 SymI_HasProto(stg_forkOnzh) \
1104 SymI_HasProto(forkProcess) \
1105 SymI_HasProto(forkOS_createThread) \
1106 SymI_HasProto(freeHaskellFunctionPtr) \
1107 SymI_HasProto(getOrSetGHCConcSignalSignalHandlerStore) \
1108 SymI_HasProto(getOrSetGHCConcWindowsPendingDelaysStore) \
1109 SymI_HasProto(getOrSetGHCConcWindowsIOManagerThreadStore) \
1110 SymI_HasProto(getOrSetGHCConcWindowsProddingStore) \
1111 SymI_HasProto(getOrSetSystemEventThreadEventManagerStore) \
1112 SymI_HasProto(getOrSetSystemEventThreadIOManagerThreadStore) \
1113 SymI_HasProto(getOrSetSystemTimerThreadEventManagerStore) \
1114 SymI_HasProto(getOrSetSystemTimerThreadIOManagerThreadStore) \
1115 SymI_HasProto(getOrSetLibHSghcFastStringTable) \
1116 SymI_HasProto(getGCStats) \
1117 SymI_HasProto(getGCStatsEnabled) \
1118 SymI_HasProto(genericRaise) \
1119 SymI_HasProto(getProgArgv) \
1120 SymI_HasProto(getFullProgArgv) \
1121 SymI_HasProto(getStablePtr) \
1122 SymI_HasProto(foreignExportStablePtr) \
1123 SymI_HasProto(hs_init) \
1124 SymI_HasProto(hs_exit) \
1125 SymI_HasProto(hs_set_argv) \
1126 SymI_HasProto(hs_add_root) \
1127 SymI_HasProto(hs_perform_gc) \
1128 SymI_HasProto(hs_lock_stable_tables) \
1129 SymI_HasProto(hs_unlock_stable_tables) \
1130 SymI_HasProto(hs_free_stable_ptr) \
1131 SymI_HasProto(hs_free_stable_ptr_unsafe) \
1132 SymI_HasProto(hs_free_fun_ptr) \
1133 SymI_HasProto(hs_hpc_rootModule) \
1134 SymI_HasProto(hs_hpc_module) \
1135 SymI_HasProto(initLinker) \
1136 SymI_HasProto(initLinker_) \
1137 SymI_HasProto(stg_unpackClosurezh) \
1138 SymI_HasProto(stg_getApStackValzh) \
1139 SymI_HasProto(stg_getSparkzh) \
1140 SymI_HasProto(stg_numSparkszh) \
1141 SymI_HasProto(stg_isCurrentThreadBoundzh) \
1142 SymI_HasProto(stg_isEmptyMVarzh) \
1143 SymI_HasProto(stg_killThreadzh) \
1144 SymI_HasProto(loadArchive) \
1145 SymI_HasProto(loadObj) \
1146 SymI_HasProto(insertSymbol) \
1147 SymI_HasProto(lookupSymbol) \
1148 SymI_HasProto(stg_makeStablePtrzh) \
1149 SymI_HasProto(stg_mkApUpd0zh) \
1150 SymI_HasProto(stg_myThreadIdzh) \
1151 SymI_HasProto(stg_labelThreadzh) \
1152 SymI_HasProto(stg_newArrayzh) \
1153 SymI_HasProto(stg_newArrayArrayzh) \
1154 SymI_HasProto(stg_casArrayzh) \
1155 SymI_HasProto(stg_newBCOzh) \
1156 SymI_HasProto(stg_newByteArrayzh) \
1157 SymI_HasProto(stg_casIntArrayzh) \
1158 SymI_HasProto(stg_fetchAddIntArrayzh) \
1159 SymI_HasProto(stg_newMVarzh) \
1160 SymI_HasProto(stg_newMutVarzh) \
1161 SymI_HasProto(stg_newTVarzh) \
1162 SymI_HasProto(stg_noDuplicatezh) \
1163 SymI_HasProto(stg_atomicModifyMutVarzh) \
1164 SymI_HasProto(stg_casMutVarzh) \
1165 SymI_HasProto(stg_newPinnedByteArrayzh) \
1166 SymI_HasProto(stg_newAlignedPinnedByteArrayzh) \
1167 SymI_HasProto(newSpark) \
1168 SymI_HasProto(performGC) \
1169 SymI_HasProto(performMajorGC) \
1170 SymI_HasProto(prog_argc) \
1171 SymI_HasProto(prog_argv) \
1172 SymI_HasProto(stg_putMVarzh) \
1173 SymI_HasProto(stg_raisezh) \
1174 SymI_HasProto(stg_raiseIOzh) \
1175 SymI_HasProto(stg_readTVarzh) \
1176 SymI_HasProto(stg_readTVarIOzh) \
1177 SymI_HasProto(resumeThread) \
1178 SymI_HasProto(setNumCapabilities) \
1179 SymI_HasProto(getNumberOfProcessors) \
1180 SymI_HasProto(resolveObjs) \
1181 SymI_HasProto(stg_retryzh) \
1182 SymI_HasProto(rts_apply) \
1183 SymI_HasProto(rts_checkSchedStatus) \
1184 SymI_HasProto(rts_eval) \
1185 SymI_HasProto(rts_evalIO) \
1186 SymI_HasProto(rts_evalLazyIO) \
1187 SymI_HasProto(rts_evalStableIO) \
1188 SymI_HasProto(rts_eval_) \
1189 SymI_HasProto(rts_getBool) \
1190 SymI_HasProto(rts_getChar) \
1191 SymI_HasProto(rts_getDouble) \
1192 SymI_HasProto(rts_getFloat) \
1193 SymI_HasProto(rts_getInt) \
1194 SymI_HasProto(rts_getInt8) \
1195 SymI_HasProto(rts_getInt16) \
1196 SymI_HasProto(rts_getInt32) \
1197 SymI_HasProto(rts_getInt64) \
1198 SymI_HasProto(rts_getPtr) \
1199 SymI_HasProto(rts_getFunPtr) \
1200 SymI_HasProto(rts_getStablePtr) \
1201 SymI_HasProto(rts_getThreadId) \
1202 SymI_HasProto(rts_getWord) \
1203 SymI_HasProto(rts_getWord8) \
1204 SymI_HasProto(rts_getWord16) \
1205 SymI_HasProto(rts_getWord32) \
1206 SymI_HasProto(rts_getWord64) \
1207 SymI_HasProto(rts_lock) \
1208 SymI_HasProto(rts_mkBool) \
1209 SymI_HasProto(rts_mkChar) \
1210 SymI_HasProto(rts_mkDouble) \
1211 SymI_HasProto(rts_mkFloat) \
1212 SymI_HasProto(rts_mkInt) \
1213 SymI_HasProto(rts_mkInt8) \
1214 SymI_HasProto(rts_mkInt16) \
1215 SymI_HasProto(rts_mkInt32) \
1216 SymI_HasProto(rts_mkInt64) \
1217 SymI_HasProto(rts_mkPtr) \
1218 SymI_HasProto(rts_mkFunPtr) \
1219 SymI_HasProto(rts_mkStablePtr) \
1220 SymI_HasProto(rts_mkString) \
1221 SymI_HasProto(rts_mkWord) \
1222 SymI_HasProto(rts_mkWord8) \
1223 SymI_HasProto(rts_mkWord16) \
1224 SymI_HasProto(rts_mkWord32) \
1225 SymI_HasProto(rts_mkWord64) \
1226 SymI_HasProto(rts_unlock) \
1227 SymI_HasProto(rts_unsafeGetMyCapability) \
1228 SymI_HasProto(rtsSupportsBoundThreads) \
1229 SymI_HasProto(rts_isProfiled) \
1230 SymI_HasProto(rts_isDynamic) \
1231 SymI_HasProto(setProgArgv) \
1232 SymI_HasProto(startupHaskell) \
1233 SymI_HasProto(shutdownHaskell) \
1234 SymI_HasProto(shutdownHaskellAndExit) \
1235 SymI_HasProto(stable_name_table) \
1236 SymI_HasProto(stable_ptr_table) \
1237 SymI_HasProto(stackOverflow) \
1238 SymI_HasProto(stg_CAF_BLACKHOLE_info) \
1239 SymI_HasProto(stg_BLACKHOLE_info) \
1240 SymI_HasProto(__stg_EAGER_BLACKHOLE_info) \
1241 SymI_HasProto(stg_BLOCKING_QUEUE_CLEAN_info) \
1242 SymI_HasProto(stg_BLOCKING_QUEUE_DIRTY_info) \
1243 SymI_HasProto(startTimer) \
1244 SymI_HasProto(stg_MVAR_CLEAN_info) \
1245 SymI_HasProto(stg_MVAR_DIRTY_info) \
1246 SymI_HasProto(stg_TVAR_CLEAN_info) \
1247 SymI_HasProto(stg_TVAR_DIRTY_info) \
1248 SymI_HasProto(stg_IND_STATIC_info) \
1249 SymI_HasProto(stg_ARR_WORDS_info) \
1250 SymI_HasProto(stg_MUT_ARR_PTRS_DIRTY_info) \
1251 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN_info) \
1252 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN0_info) \
1253 SymI_HasProto(stg_MUT_VAR_CLEAN_info) \
1254 SymI_HasProto(stg_MUT_VAR_DIRTY_info) \
1255 SymI_HasProto(stg_WEAK_info) \
1256 SymI_HasProto(stg_ap_v_info) \
1257 SymI_HasProto(stg_ap_f_info) \
1258 SymI_HasProto(stg_ap_d_info) \
1259 SymI_HasProto(stg_ap_l_info) \
1260 SymI_HasProto(stg_ap_v16_info) \
1261 SymI_HasProto(stg_ap_v32_info) \
1262 SymI_HasProto(stg_ap_v64_info) \
1263 SymI_HasProto(stg_ap_n_info) \
1264 SymI_HasProto(stg_ap_p_info) \
1265 SymI_HasProto(stg_ap_pv_info) \
1266 SymI_HasProto(stg_ap_pp_info) \
1267 SymI_HasProto(stg_ap_ppv_info) \
1268 SymI_HasProto(stg_ap_ppp_info) \
1269 SymI_HasProto(stg_ap_pppv_info) \
1270 SymI_HasProto(stg_ap_pppp_info) \
1271 SymI_HasProto(stg_ap_ppppp_info) \
1272 SymI_HasProto(stg_ap_pppppp_info) \
1273 SymI_HasProto(stg_ap_0_fast) \
1274 SymI_HasProto(stg_ap_v_fast) \
1275 SymI_HasProto(stg_ap_f_fast) \
1276 SymI_HasProto(stg_ap_d_fast) \
1277 SymI_HasProto(stg_ap_l_fast) \
1278 SymI_HasProto(stg_ap_v16_fast) \
1279 SymI_HasProto(stg_ap_v32_fast) \
1280 SymI_HasProto(stg_ap_v64_fast) \
1281 SymI_HasProto(stg_ap_n_fast) \
1282 SymI_HasProto(stg_ap_p_fast) \
1283 SymI_HasProto(stg_ap_pv_fast) \
1284 SymI_HasProto(stg_ap_pp_fast) \
1285 SymI_HasProto(stg_ap_ppv_fast) \
1286 SymI_HasProto(stg_ap_ppp_fast) \
1287 SymI_HasProto(stg_ap_pppv_fast) \
1288 SymI_HasProto(stg_ap_pppp_fast) \
1289 SymI_HasProto(stg_ap_ppppp_fast) \
1290 SymI_HasProto(stg_ap_pppppp_fast) \
1291 SymI_HasProto(stg_ap_1_upd_info) \
1292 SymI_HasProto(stg_ap_2_upd_info) \
1293 SymI_HasProto(stg_ap_3_upd_info) \
1294 SymI_HasProto(stg_ap_4_upd_info) \
1295 SymI_HasProto(stg_ap_5_upd_info) \
1296 SymI_HasProto(stg_ap_6_upd_info) \
1297 SymI_HasProto(stg_ap_7_upd_info) \
1298 SymI_HasProto(stg_exit) \
1299 SymI_HasProto(stg_sel_0_upd_info) \
1300 SymI_HasProto(stg_sel_1_upd_info) \
1301 SymI_HasProto(stg_sel_2_upd_info) \
1302 SymI_HasProto(stg_sel_3_upd_info) \
1303 SymI_HasProto(stg_sel_4_upd_info) \
1304 SymI_HasProto(stg_sel_5_upd_info) \
1305 SymI_HasProto(stg_sel_6_upd_info) \
1306 SymI_HasProto(stg_sel_7_upd_info) \
1307 SymI_HasProto(stg_sel_8_upd_info) \
1308 SymI_HasProto(stg_sel_9_upd_info) \
1309 SymI_HasProto(stg_sel_10_upd_info) \
1310 SymI_HasProto(stg_sel_11_upd_info) \
1311 SymI_HasProto(stg_sel_12_upd_info) \
1312 SymI_HasProto(stg_sel_13_upd_info) \
1313 SymI_HasProto(stg_sel_14_upd_info) \
1314 SymI_HasProto(stg_sel_15_upd_info) \
1315 SymI_HasProto(stg_sel_0_noupd_info) \
1316 SymI_HasProto(stg_sel_1_noupd_info) \
1317 SymI_HasProto(stg_sel_2_noupd_info) \
1318 SymI_HasProto(stg_sel_3_noupd_info) \
1319 SymI_HasProto(stg_sel_4_noupd_info) \
1320 SymI_HasProto(stg_sel_5_noupd_info) \
1321 SymI_HasProto(stg_sel_6_noupd_info) \
1322 SymI_HasProto(stg_sel_7_noupd_info) \
1323 SymI_HasProto(stg_sel_8_noupd_info) \
1324 SymI_HasProto(stg_sel_9_noupd_info) \
1325 SymI_HasProto(stg_sel_10_noupd_info) \
1326 SymI_HasProto(stg_sel_11_noupd_info) \
1327 SymI_HasProto(stg_sel_12_noupd_info) \
1328 SymI_HasProto(stg_sel_13_noupd_info) \
1329 SymI_HasProto(stg_sel_14_noupd_info) \
1330 SymI_HasProto(stg_sel_15_noupd_info) \
1331 SymI_HasProto(stg_upd_frame_info) \
1332 SymI_HasProto(stg_bh_upd_frame_info) \
1333 SymI_HasProto(suspendThread) \
1334 SymI_HasProto(stg_takeMVarzh) \
1335 SymI_HasProto(stg_readMVarzh) \
1336 SymI_HasProto(stg_threadStatuszh) \
1337 SymI_HasProto(stg_tryPutMVarzh) \
1338 SymI_HasProto(stg_tryTakeMVarzh) \
1339 SymI_HasProto(stg_tryReadMVarzh) \
1340 SymI_HasProto(stg_unmaskAsyncExceptionszh) \
1341 SymI_HasProto(unloadObj) \
1342 SymI_HasProto(stg_unsafeThawArrayzh) \
1343 SymI_HasProto(stg_waitReadzh) \
1344 SymI_HasProto(stg_waitWritezh) \
1345 SymI_HasProto(stg_writeTVarzh) \
1346 SymI_HasProto(stg_yieldzh) \
1347 SymI_NeedsProto(stg_interp_constr_entry) \
1348 SymI_HasProto(stg_arg_bitmaps) \
1349 SymI_HasProto(large_alloc_lim) \
1350 SymI_HasProto(g0) \
1351 SymI_HasProto(allocate) \
1352 SymI_HasProto(allocateExec) \
1353 SymI_HasProto(freeExec) \
1354 SymI_HasProto(getAllocations) \
1355 SymI_HasProto(revertCAFs) \
1356 SymI_HasProto(RtsFlags) \
1357 SymI_NeedsProto(rts_breakpoint_io_action) \
1358 SymI_NeedsProto(rts_stop_next_breakpoint) \
1359 SymI_NeedsProto(rts_stop_on_exception) \
1360 SymI_HasProto(stopTimer) \
1361 SymI_HasProto(n_capabilities) \
1362 SymI_HasProto(enabled_capabilities) \
1363 SymI_HasProto(stg_traceCcszh) \
1364 SymI_HasProto(stg_traceEventzh) \
1365 SymI_HasProto(stg_traceMarkerzh) \
1366 SymI_HasProto(getMonotonicNSec) \
1367 SymI_HasProto(lockFile) \
1368 SymI_HasProto(unlockFile) \
1369 SymI_HasProto(startProfTimer) \
1370 SymI_HasProto(stopProfTimer) \
1371 SymI_HasProto(atomic_inc) \
1372 SymI_HasProto(atomic_dec) \
1373 RTS_USER_SIGNALS_SYMBOLS \
1374 RTS_INTCHAR_SYMBOLS
1375
1376
1377 // 64-bit support functions in libgcc.a
1378 #if defined(__GNUC__) && SIZEOF_VOID_P <= 4 && !defined(_ABIN32)
1379 #define RTS_LIBGCC_SYMBOLS \
1380 SymI_NeedsProto(__divdi3) \
1381 SymI_NeedsProto(__udivdi3) \
1382 SymI_NeedsProto(__moddi3) \
1383 SymI_NeedsProto(__umoddi3) \
1384 SymI_NeedsProto(__muldi3) \
1385 SymI_NeedsProto(__ashldi3) \
1386 SymI_NeedsProto(__ashrdi3) \
1387 SymI_NeedsProto(__lshrdi3) \
1388 SymI_NeedsProto(__fixunsdfdi)
1389 #else
1390 #define RTS_LIBGCC_SYMBOLS
1391 #endif
1392
1393 #if defined(darwin_HOST_OS) && defined(powerpc_HOST_ARCH)
1394 // Symbols that don't have a leading underscore
1395 // on Mac OS X. They have to receive special treatment,
1396 // see machoInitSymbolsWithoutUnderscore()
1397 #define RTS_MACHO_NOUNDERLINE_SYMBOLS \
1398 SymI_NeedsProto(saveFP) \
1399 SymI_NeedsProto(restFP)
1400 #endif
1401
1402 /* entirely bogus claims about types of these symbols */
1403 #define SymI_NeedsProto(vvv) extern void vvv(void);
1404 #if defined(COMPILING_WINDOWS_DLL)
1405 #define SymE_HasProto(vvv) SymE_HasProto(vvv);
1406 # if defined(x86_64_HOST_ARCH)
1407 # define SymE_NeedsProto(vvv) extern void __imp_ ## vvv (void);
1408 # else
1409 # define SymE_NeedsProto(vvv) extern void _imp__ ## vvv (void);
1410 # endif
1411 #else
1412 #define SymE_NeedsProto(vvv) SymI_NeedsProto(vvv);
1413 #define SymE_HasProto(vvv) SymI_HasProto(vvv)
1414 #endif
1415 #define SymI_HasProto(vvv) /**/
1416 #define SymI_HasProto_redirect(vvv,xxx) /**/
1417 RTS_SYMBOLS
1418 RTS_RET_SYMBOLS
1419 RTS_POSIX_ONLY_SYMBOLS
1420 RTS_MINGW_ONLY_SYMBOLS
1421 RTS_CYGWIN_ONLY_SYMBOLS
1422 RTS_DARWIN_ONLY_SYMBOLS
1423 RTS_LIBGCC_SYMBOLS
1424 RTS_LIBFFI_SYMBOLS
1425 #undef SymI_NeedsProto
1426 #undef SymI_HasProto
1427 #undef SymI_HasProto_redirect
1428 #undef SymE_HasProto
1429 #undef SymE_NeedsProto
1430
1431 #ifdef LEADING_UNDERSCORE
1432 #define MAYBE_LEADING_UNDERSCORE_STR(s) ("_" s)
1433 #else
1434 #define MAYBE_LEADING_UNDERSCORE_STR(s) (s)
1435 #endif
1436
1437 #define SymI_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1438 (void*)(&(vvv)) },
1439 #define SymE_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1440 (void*)DLL_IMPORT_DATA_REF(vvv) },
1441
1442 #define SymI_NeedsProto(vvv) SymI_HasProto(vvv)
1443 #define SymE_NeedsProto(vvv) SymE_HasProto(vvv)
1444
1445 // SymI_HasProto_redirect allows us to redirect references to one symbol to
1446 // another symbol. See newCAF/newDynCAF for an example.
1447 #define SymI_HasProto_redirect(vvv,xxx) \
1448 { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1449 (void*)(&(xxx)) },
1450
1451 static RtsSymbolVal rtsSyms[] = {
1452 RTS_SYMBOLS
1453 RTS_RET_SYMBOLS
1454 RTS_POSIX_ONLY_SYMBOLS
1455 RTS_MINGW_ONLY_SYMBOLS
1456 RTS_CYGWIN_ONLY_SYMBOLS
1457 RTS_DARWIN_ONLY_SYMBOLS
1458 RTS_LIBGCC_SYMBOLS
1459 RTS_LIBFFI_SYMBOLS
1460 #if defined(darwin_HOST_OS) && defined(i386_HOST_ARCH)
1461 // dyld stub code contains references to this,
1462 // but it should never be called because we treat
1463 // lazy pointers as nonlazy.
1464 { "dyld_stub_binding_helper", (void*)0xDEADBEEF },
1465 #endif
1466 { 0, 0 } /* sentinel */
1467 };
1468
1469
1470 /* -----------------------------------------------------------------------------
1471 * Insert symbols into hash tables, checking for duplicates.
1472 */
1473
1474 static void ghciInsertSymbolTable(
1475 pathchar* obj_name,
1476 HashTable *table,
1477 char* key,
1478 void *data,
1479 HsBool weak,
1480 ObjectCode *owner)
1481 {
1482 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1483 if (!pinfo) /* new entry */
1484 {
1485 pinfo = stgMallocBytes(sizeof (*pinfo), "ghciInsertToSymbolTable");
1486 pinfo->value = data;
1487 pinfo->owner = owner;
1488 pinfo->weak = weak;
1489 insertStrHashTable(table, key, pinfo);
1490 return;
1491 } else if ((!pinfo->weak || pinfo->value) && weak) {
1492 return; /* duplicate weak symbol, throw it away */
1493 } else if (pinfo->weak) /* weak symbol is in the table */
1494 {
1495 /* override the weak definition with the non-weak one */
1496 pinfo->value = data;
1497 pinfo->owner = owner;
1498 pinfo->weak = HS_BOOL_FALSE;
1499 return;
1500 }
1501 debugBelch(
1502 "\n\n"
1503 "GHCi runtime linker: fatal error: I found a duplicate definition for symbol\n"
1504 " %s\n"
1505 "whilst processing object file\n"
1506 " %" PATH_FMT "\n"
1507 "This could be caused by:\n"
1508 " * Loading two different object files which export the same symbol\n"
1509 " * Specifying the same object file twice on the GHCi command line\n"
1510 " * An incorrect `package.conf' entry, causing some object to be\n"
1511 " loaded twice.\n"
1512 "GHCi cannot safely continue in this situation. Exiting now. Sorry.\n"
1513 "\n",
1514 (char*)key,
1515 obj_name
1516 );
1517 stg_exit(1);
1518 }
1519
1520 static HsBool ghciLookupSymbolTable(HashTable *table,
1521 const char *key, void **result)
1522 {
1523 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1524 if (!pinfo) {
1525 *result = NULL;
1526 return HS_BOOL_FALSE;
1527 }
1528 if (pinfo->weak)
1529 IF_DEBUG(linker, debugBelch("lookup: promoting %s\n", key));
1530 /* Once it's looked up, it can no longer be overridden */
1531 pinfo->weak = HS_BOOL_FALSE;
1532
1533 *result = pinfo->value;
1534 return HS_BOOL_TRUE;
1535 }
1536
1537 static void ghciRemoveSymbolTable(HashTable *table, const char *key,
1538 ObjectCode *owner)
1539 {
1540 RtsSymbolInfo *pinfo = lookupStrHashTable(table, key);
1541 if (!pinfo || owner != pinfo->owner) return;
1542 removeStrHashTable(table, key, NULL);
1543 stgFree(pinfo);
1544 }
1545 /* -----------------------------------------------------------------------------
1546 * initialize the object linker
1547 */
1548
1549
1550 static int linker_init_done = 0 ;
1551
1552 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1553 static void *dl_prog_handle;
1554 static regex_t re_invalid;
1555 static regex_t re_realso;
1556 #ifdef THREADED_RTS
1557 static Mutex dl_mutex; // mutex to protect dlopen/dlerror critical section
1558 #endif
1559 #endif
1560
1561 void initLinker (void)
1562 {
1563 // default to retaining CAFs for backwards compatibility. Most
1564 // users will want initLinker_(0): otherwise unloadObj() will not
1565 // be able to unload object files when they contain CAFs.
1566 initLinker_(1);
1567 }
1568
1569 void
1570 initLinker_ (int retain_cafs)
1571 {
1572 RtsSymbolVal *sym;
1573 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1574 int compileResult;
1575 #endif
1576
1577 IF_DEBUG(linker, debugBelch("initLinker: start\n"));
1578
1579 /* Make initLinker idempotent, so we can call it
1580 before every relevant operation; that means we
1581 don't need to initialise the linker separately */
1582 if (linker_init_done == 1) {
1583 IF_DEBUG(linker, debugBelch("initLinker: idempotent return\n"));
1584 return;
1585 } else {
1586 linker_init_done = 1;
1587 }
1588
1589 objects = NULL;
1590 unloaded_objects = NULL;
1591
1592 #if defined(THREADED_RTS) && (defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO))
1593 initMutex(&dl_mutex);
1594 #endif
1595 symhash = allocStrHashTable();
1596
1597 /* populate the symbol table with stuff from the RTS */
1598 for (sym = rtsSyms; sym->lbl != NULL; sym++) {
1599 ghciInsertSymbolTable(WSTR("(GHCi built-in symbols)"),
1600 symhash, sym->lbl, sym->addr, HS_BOOL_FALSE, NULL);
1601 IF_DEBUG(linker, debugBelch("initLinker: inserting rts symbol %s, %p\n", sym->lbl, sym->addr));
1602 }
1603 # if defined(OBJFORMAT_MACHO) && defined(powerpc_HOST_ARCH)
1604 machoInitSymbolsWithoutUnderscore();
1605 # endif
1606 /* GCC defines a special symbol __dso_handle which is resolved to NULL if
1607 referenced from a statically linked module. We need to mimic this, but
1608 we cannot use NULL because we use it to mean nonexistent symbols. So we
1609 use an arbitrary (hopefully unique) address here.
1610 */
1611 ghciInsertSymbolTable(WSTR("(GHCi special symbols)"),
1612 symhash, "__dso_handle", (void *)0x12345687, HS_BOOL_FALSE, NULL);
1613
1614 // Redurect newCAF to newDynCAF if retain_cafs is true.
1615 ghciInsertSymbolTable(WSTR("(GHCi built-in symbols)"), symhash,
1616 MAYBE_LEADING_UNDERSCORE_STR("newCAF"),
1617 retain_cafs ? newDynCAF : newCAF,
1618 HS_BOOL_FALSE, NULL);
1619
1620 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1621 # if defined(RTLD_DEFAULT)
1622 dl_prog_handle = RTLD_DEFAULT;
1623 # else
1624 dl_prog_handle = dlopen(NULL, RTLD_LAZY);
1625 # endif /* RTLD_DEFAULT */
1626
1627 compileResult = regcomp(&re_invalid,
1628 "(([^ \t()])+\\.so([^ \t:()])*):([ \t])*(invalid ELF header|file too short)",
1629 REG_EXTENDED);
1630 if (compileResult != 0) {
1631 barf("Compiling re_invalid failed");
1632 }
1633 compileResult = regcomp(&re_realso,
1634 "(GROUP|INPUT) *\\( *([^ )]+)",
1635 REG_EXTENDED);
1636 if (compileResult != 0) {
1637 barf("Compiling re_realso failed");
1638 }
1639 # endif
1640
1641 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1642 if (RtsFlags.MiscFlags.linkerMemBase != 0) {
1643 // User-override for mmap_32bit_base
1644 mmap_32bit_base = (void*)RtsFlags.MiscFlags.linkerMemBase;
1645 }
1646 #endif
1647
1648 #if defined(mingw32_HOST_OS)
1649 /*
1650 * These two libraries cause problems when added to the static link,
1651 * but are necessary for resolving symbols in GHCi, hence we load
1652 * them manually here.
1653 */
1654 addDLL(WSTR("msvcrt"));
1655 addDLL(WSTR("kernel32"));
1656 #endif
1657
1658 IF_DEBUG(linker, debugBelch("initLinker: done\n"));
1659 return;
1660 }
1661
1662 void
1663 exitLinker( void ) {
1664 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1665 if (linker_init_done == 1) {
1666 regfree(&re_invalid);
1667 regfree(&re_realso);
1668 #ifdef THREADED_RTS
1669 closeMutex(&dl_mutex);
1670 #endif
1671 }
1672 #endif
1673 }
1674
1675 /* -----------------------------------------------------------------------------
1676 * Loading DLL or .so dynamic libraries
1677 * -----------------------------------------------------------------------------
1678 *
1679 * Add a DLL from which symbols may be found. In the ELF case, just
1680 * do RTLD_GLOBAL-style add, so no further messing around needs to
1681 * happen in order that symbols in the loaded .so are findable --
1682 * lookupSymbol() will subsequently see them by dlsym on the program's
1683 * dl-handle. Returns NULL if success, otherwise ptr to an err msg.
1684 *
1685 * In the PEi386 case, open the DLLs and put handles to them in a
1686 * linked list. When looking for a symbol, try all handles in the
1687 * list. This means that we need to load even DLLs that are guaranteed
1688 * to be in the ghc.exe image already, just so we can get a handle
1689 * to give to loadSymbol, so that we can find the symbols. For such
1690 * libraries, the LoadLibrary call should be a no-op except for returning
1691 * the handle.
1692 *
1693 */
1694
1695 #if defined(OBJFORMAT_PEi386)
1696 /* A record for storing handles into DLLs. */
1697
1698 typedef
1699 struct _OpenedDLL {
1700 pathchar* name;
1701 struct _OpenedDLL* next;
1702 HINSTANCE instance;
1703 }
1704 OpenedDLL;
1705
1706 /* A list thereof. */
1707 static OpenedDLL* opened_dlls = NULL;
1708 #endif
1709
1710 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1711
1712 /* Suppose in ghci we load a temporary SO for a module containing
1713 f = 1
1714 and then modify the module, recompile, and load another temporary
1715 SO with
1716 f = 2
1717 Then as we don't unload the first SO, dlsym will find the
1718 f = 1
1719 symbol whereas we want the
1720 f = 2
1721 symbol. We therefore need to keep our own SO handle list, and
1722 try SOs in the right order. */
1723
1724 typedef
1725 struct _OpenedSO {
1726 struct _OpenedSO* next;
1727 void *handle;
1728 }
1729 OpenedSO;
1730
1731 /* A list thereof. */
1732 static OpenedSO* openedSOs = NULL;
1733
1734 static const char *
1735 internal_dlopen(const char *dll_name)
1736 {
1737 OpenedSO* o_so;
1738 void *hdl;
1739 const char *errmsg;
1740 char *errmsg_copy;
1741
1742 // omitted: RTLD_NOW
1743 // see http://www.haskell.org/pipermail/cvs-ghc/2007-September/038570.html
1744 IF_DEBUG(linker,
1745 debugBelch("internal_dlopen: dll_name = '%s'\n", dll_name));
1746
1747 //-------------- Begin critical section ------------------
1748 // This critical section is necessary because dlerror() is not
1749 // required to be reentrant (see POSIX -- IEEE Std 1003.1-2008)
1750 // Also, the error message returned must be copied to preserve it
1751 // (see POSIX also)
1752
1753 ACQUIRE_LOCK(&dl_mutex);
1754 hdl = dlopen(dll_name, RTLD_LAZY | RTLD_GLOBAL);
1755
1756 errmsg = NULL;
1757 if (hdl == NULL) {
1758 /* dlopen failed; return a ptr to the error msg. */
1759 errmsg = dlerror();
1760 if (errmsg == NULL) errmsg = "addDLL: unknown error";
1761 errmsg_copy = stgMallocBytes(strlen(errmsg)+1, "addDLL");
1762 strcpy(errmsg_copy, errmsg);
1763 errmsg = errmsg_copy;
1764 }
1765 o_so = stgMallocBytes(sizeof(OpenedSO), "addDLL");
1766 o_so->handle = hdl;
1767 o_so->next = openedSOs;
1768 openedSOs = o_so;
1769
1770 RELEASE_LOCK(&dl_mutex);
1771 //--------------- End critical section -------------------
1772
1773 return errmsg;
1774 }
1775
1776 static void *
1777 internal_dlsym(void *hdl, const char *symbol) {
1778 OpenedSO* o_so;
1779 void *v;
1780
1781 // We acquire dl_mutex as concurrent dl* calls may alter dlerror
1782 ACQUIRE_LOCK(&dl_mutex);
1783 dlerror();
1784 for (o_so = openedSOs; o_so != NULL; o_so = o_so->next) {
1785 v = dlsym(o_so->handle, symbol);
1786 if (dlerror() == NULL) {
1787 RELEASE_LOCK(&dl_mutex);
1788 return v;
1789 }
1790 }
1791 v = dlsym(hdl, symbol);
1792 RELEASE_LOCK(&dl_mutex);
1793 return v;
1794 }
1795 # endif
1796
1797 const char *
1798 addDLL( pathchar *dll_name )
1799 {
1800 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1801 /* ------------------- ELF DLL loader ------------------- */
1802
1803 #define NMATCH 5
1804 regmatch_t match[NMATCH];
1805 const char *errmsg;
1806 FILE* fp;
1807 size_t match_length;
1808 #define MAXLINE 1000
1809 char line[MAXLINE];
1810 int result;
1811
1812 initLinker();
1813
1814 IF_DEBUG(linker, debugBelch("addDLL: dll_name = '%s'\n", dll_name));
1815 errmsg = internal_dlopen(dll_name);
1816
1817 if (errmsg == NULL) {
1818 return NULL;
1819 }
1820
1821 // GHC Trac ticket #2615
1822 // On some systems (e.g., Gentoo Linux) dynamic files (e.g. libc.so)
1823 // contain linker scripts rather than ELF-format object code. This
1824 // code handles the situation by recognizing the real object code
1825 // file name given in the linker script.
1826 //
1827 // If an "invalid ELF header" error occurs, it is assumed that the
1828 // .so file contains a linker script instead of ELF object code.
1829 // In this case, the code looks for the GROUP ( ... ) linker
1830 // directive. If one is found, the first file name inside the
1831 // parentheses is treated as the name of a dynamic library and the
1832 // code attempts to dlopen that file. If this is also unsuccessful,
1833 // an error message is returned.
1834
1835 // see if the error message is due to an invalid ELF header
1836 IF_DEBUG(linker, debugBelch("errmsg = '%s'\n", errmsg));
1837 result = regexec(&re_invalid, errmsg, (size_t) NMATCH, match, 0);
1838 IF_DEBUG(linker, debugBelch("result = %i\n", result));
1839 if (result == 0) {
1840 // success -- try to read the named file as a linker script
1841 match_length = (size_t) stg_min((match[1].rm_eo - match[1].rm_so),
1842 MAXLINE-1);
1843 strncpy(line, (errmsg+(match[1].rm_so)),match_length);
1844 line[match_length] = '\0'; // make sure string is null-terminated
1845 IF_DEBUG(linker, debugBelch ("file name = '%s'\n", line));
1846 if ((fp = fopen(line, "r")) == NULL) {
1847 return errmsg; // return original error if open fails
1848 }
1849 // try to find a GROUP or INPUT ( ... ) command
1850 while (fgets(line, MAXLINE, fp) != NULL) {
1851 IF_DEBUG(linker, debugBelch("input line = %s", line));
1852 if (regexec(&re_realso, line, (size_t) NMATCH, match, 0) == 0) {
1853 // success -- try to dlopen the first named file
1854 IF_DEBUG(linker, debugBelch("match%s\n",""));
1855 line[match[2].rm_eo] = '\0';
1856 errmsg = internal_dlopen(line+match[2].rm_so);
1857 break;
1858 }
1859 // if control reaches here, no GROUP or INPUT ( ... ) directive
1860 // was found and the original error message is returned to the
1861 // caller
1862 }
1863 fclose(fp);
1864 }
1865 return errmsg;
1866
1867 # elif defined(OBJFORMAT_PEi386)
1868 /* ------------------- Win32 DLL loader ------------------- */
1869
1870 pathchar* buf;
1871 OpenedDLL* o_dll;
1872 HINSTANCE instance;
1873
1874 initLinker();
1875
1876 /* debugBelch("\naddDLL; dll_name = `%s'\n", dll_name); */
1877
1878 /* See if we've already got it, and ignore if so. */
1879 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
1880 if (0 == pathcmp(o_dll->name, dll_name))
1881 return NULL;
1882 }
1883
1884 /* The file name has no suffix (yet) so that we can try
1885 both foo.dll and foo.drv
1886
1887 The documentation for LoadLibrary says:
1888 If no file name extension is specified in the lpFileName
1889 parameter, the default library extension .dll is
1890 appended. However, the file name string can include a trailing
1891 point character (.) to indicate that the module name has no
1892 extension. */
1893
1894 buf = stgMallocBytes((pathlen(dll_name) + 10) * sizeof(wchar_t), "addDLL");
1895 swprintf(buf, L"%s.DLL", dll_name);
1896 instance = LoadLibraryW(buf);
1897 if (instance == NULL) {
1898 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1899 // KAA: allow loading of drivers (like winspool.drv)
1900 swprintf(buf, L"%s.DRV", dll_name);
1901 instance = LoadLibraryW(buf);
1902 if (instance == NULL) {
1903 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1904 // #1883: allow loading of unix-style libfoo.dll DLLs
1905 swprintf(buf, L"lib%s.DLL", dll_name);
1906 instance = LoadLibraryW(buf);
1907 if (instance == NULL) {
1908 goto error;
1909 }
1910 }
1911 }
1912 stgFree(buf);
1913
1914 /* Add this DLL to the list of DLLs in which to search for symbols. */
1915 o_dll = stgMallocBytes( sizeof(OpenedDLL), "addDLL" );
1916 o_dll->name = pathdup(dll_name);
1917 o_dll->instance = instance;
1918 o_dll->next = opened_dlls;
1919 opened_dlls = o_dll;
1920
1921 return NULL;
1922
1923 error:
1924 stgFree(buf);
1925 sysErrorBelch("%" PATH_FMT, dll_name);
1926
1927 /* LoadLibrary failed; return a ptr to the error msg. */
1928 return "addDLL: could not load DLL";
1929
1930 # else
1931 barf("addDLL: not implemented on this platform");
1932 # endif
1933 }
1934
1935 /* -----------------------------------------------------------------------------
1936 * insert a symbol in the hash table
1937 */
1938 void
1939 insertSymbol(pathchar* obj_name, char* key, void* data)
1940 {
1941 ghciInsertSymbolTable(obj_name, symhash, key, data, HS_BOOL_FALSE, NULL);
1942 }
1943
1944 /* -----------------------------------------------------------------------------
1945 * lookup a symbol in the hash table
1946 */
1947 void *
1948 lookupSymbol( char *lbl )
1949 {
1950 void *val;
1951 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s\n", lbl));
1952 initLinker() ;
1953 ASSERT(symhash != NULL);
1954
1955 if (!ghciLookupSymbolTable(symhash, lbl, &val)) {
1956 IF_DEBUG(linker, debugBelch("lookupSymbol: symbol not found\n"));
1957 # if defined(OBJFORMAT_ELF)
1958 return internal_dlsym(dl_prog_handle, lbl);
1959 # elif defined(OBJFORMAT_MACHO)
1960 # if HAVE_DLFCN_H
1961 /* On OS X 10.3 and later, we use dlsym instead of the old legacy
1962 interface.
1963
1964 HACK: On OS X, all symbols are prefixed with an underscore.
1965 However, dlsym wants us to omit the leading underscore from the
1966 symbol name -- the dlsym routine puts it back on before searching
1967 for the symbol. For now, we simply strip it off here (and ONLY
1968 here).
1969 */
1970 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s with dlsym\n", lbl));
1971 ASSERT(lbl[0] == '_');
1972 return internal_dlsym(dl_prog_handle, lbl + 1);
1973 # else
1974 if (NSIsSymbolNameDefined(lbl)) {
1975 NSSymbol symbol = NSLookupAndBindSymbol(lbl);
1976 return NSAddressOfSymbol(symbol);
1977 } else {
1978 return NULL;
1979 }
1980 # endif /* HAVE_DLFCN_H */
1981 # elif defined(OBJFORMAT_PEi386)
1982 void* sym;
1983
1984 sym = lookupSymbolInDLLs((unsigned char*)lbl);
1985 if (sym != NULL) { return sym; };
1986
1987 // Also try looking up the symbol without the @N suffix. Some
1988 // DLLs have the suffixes on their symbols, some don't.
1989 zapTrailingAtSign ( (unsigned char*)lbl );
1990 sym = lookupSymbolInDLLs((unsigned char*)lbl);
1991 if (sym != NULL) { return sym; };
1992 return NULL;
1993
1994 # else
1995 ASSERT(2+2 == 5);
1996 return NULL;
1997 # endif
1998 } else {
1999 IF_DEBUG(linker, debugBelch("lookupSymbol: value of %s is %p\n", lbl, val));
2000 return val;
2001 }
2002 }
2003
2004 /* -----------------------------------------------------------------------------
2005 Create a StablePtr for a foreign export. This is normally called by
2006 a C function with __attribute__((constructor)), which is generated
2007 by GHC and linked into the module.
2008
2009 If the object code is being loaded dynamically, then we remember
2010 which StablePtrs were allocated by the constructors and free them
2011 again in unloadObj().
2012 -------------------------------------------------------------------------- */
2013
2014 static ObjectCode *loading_obj = NULL;
2015
2016 StgStablePtr foreignExportStablePtr (StgPtr p)
2017 {
2018 ForeignExportStablePtr *fe_sptr;
2019 StgStablePtr *sptr;
2020
2021 sptr = getStablePtr(p);
2022
2023 if (loading_obj != NULL) {
2024 fe_sptr = stgMallocBytes(sizeof(ForeignExportStablePtr),
2025 "foreignExportStablePtr");
2026 fe_sptr->stable_ptr = sptr;
2027 fe_sptr->next = loading_obj->stable_ptrs;
2028 loading_obj->stable_ptrs = fe_sptr;
2029 }
2030
2031 return sptr;
2032 }
2033
2034
2035 /* -----------------------------------------------------------------------------
2036 * Debugging aid: look in GHCi's object symbol tables for symbols
2037 * within DELTA bytes of the specified address, and show their names.
2038 */
2039 #ifdef DEBUG
2040 void ghci_enquire ( char* addr );
2041
2042 void ghci_enquire ( char* addr )
2043 {
2044 int i;
2045 char* sym;
2046 char* a;
2047 const int DELTA = 64;
2048 ObjectCode* oc;
2049
2050 initLinker();
2051
2052 for (oc = objects; oc; oc = oc->next) {
2053 for (i = 0; i < oc->n_symbols; i++) {
2054 sym = oc->symbols[i];
2055 if (sym == NULL) continue;
2056 a = NULL;
2057 if (a == NULL) {
2058 ghciLookupSymbolTable(symhash, sym, (void **)&a);
2059 }
2060 if (a == NULL) {
2061 // debugBelch("ghci_enquire: can't find %s\n", sym);
2062 }
2063 else if (addr-DELTA <= a && a <= addr+DELTA) {
2064 debugBelch("%p + %3d == `%s'\n", addr, (int)(a - addr), sym);
2065 }
2066 }
2067 }
2068 }
2069 #endif
2070
2071 #ifdef USE_MMAP
2072 #define ROUND_UP(x,size) ((x + size - 1) & ~(size - 1))
2073
2074 static void *
2075 mmapForLinker (size_t bytes, nat flags, int fd)
2076 {
2077 void *map_addr = NULL;
2078 void *result;
2079 int pagesize, size;
2080 static nat fixed = 0;
2081
2082 IF_DEBUG(linker, debugBelch("mmapForLinker: start\n"));
2083 pagesize = getpagesize();
2084 size = ROUND_UP(bytes, pagesize);
2085
2086 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2087 mmap_again:
2088
2089 if (mmap_32bit_base != 0) {
2090 map_addr = mmap_32bit_base;
2091 }
2092 #endif
2093
2094 IF_DEBUG(linker, debugBelch("mmapForLinker: \tprotection %#0x\n", PROT_EXEC | PROT_READ | PROT_WRITE));
2095 IF_DEBUG(linker, debugBelch("mmapForLinker: \tflags %#0x\n", MAP_PRIVATE | TRY_MAP_32BIT | fixed | flags));
2096 result = mmap(map_addr, size, PROT_EXEC|PROT_READ|PROT_WRITE,
2097 MAP_PRIVATE|TRY_MAP_32BIT|fixed|flags, fd, 0);
2098
2099 if (result == MAP_FAILED) {
2100 sysErrorBelch("mmap %" FMT_Word " bytes at %p",(W_)size,map_addr);
2101 errorBelch("Try specifying an address with +RTS -xm<addr> -RTS");
2102 stg_exit(EXIT_FAILURE);
2103 }
2104
2105 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2106 if (mmap_32bit_base != 0) {
2107 if (result == map_addr) {
2108 mmap_32bit_base = (StgWord8*)map_addr + size;
2109 } else {
2110 if ((W_)result > 0x80000000) {
2111 // oops, we were given memory over 2Gb
2112 #if defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS)
2113 // Some platforms require MAP_FIXED. This is normally
2114 // a bad idea, because MAP_FIXED will overwrite
2115 // existing mappings.
2116 munmap(result,size);
2117 fixed = MAP_FIXED;
2118 goto mmap_again;
2119 #else
2120 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);
2121 #endif
2122 } else {
2123 // hmm, we were given memory somewhere else, but it's
2124 // still under 2Gb so we can use it. Next time, ask
2125 // for memory right after the place we just got some
2126 mmap_32bit_base = (StgWord8*)result + size;
2127 }
2128 }
2129 } else {
2130 if ((W_)result > 0x80000000) {
2131 // oops, we were given memory over 2Gb
2132 // ... try allocating memory somewhere else?;
2133 debugTrace(DEBUG_linker,"MAP_32BIT didn't work; gave us %lu bytes at 0x%p", bytes, result);
2134 munmap(result, size);
2135
2136 // Set a base address and try again... (guess: 1Gb)
2137 mmap_32bit_base = (void*)0x40000000;
2138 goto mmap_again;
2139 }
2140 }
2141 #endif
2142
2143 IF_DEBUG(linker, debugBelch("mmapForLinker: mapped %" FMT_Word " bytes starting at %p\n", (W_)size, result));
2144 IF_DEBUG(linker, debugBelch("mmapForLinker: done\n"));
2145 return result;
2146 }
2147 #endif // USE_MMAP
2148
2149
2150 void freeObjectCode (ObjectCode *oc)
2151 {
2152 #ifdef USE_MMAP
2153 int pagesize, size, r;
2154
2155 pagesize = getpagesize();
2156 size = ROUND_UP(oc->fileSize, pagesize);
2157
2158 r = munmap(oc->image, size);
2159 if (r == -1) {
2160 sysErrorBelch("munmap");
2161 }
2162
2163 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2164 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2165 if (!USE_CONTIGUOUS_MMAP)
2166 {
2167 munmap(oc->symbol_extras,
2168 ROUND_UP(sizeof(SymbolExtra) * oc->n_symbol_extras, pagesize));
2169 }
2170 #endif
2171 #endif
2172
2173 #else
2174
2175 stgFree(oc->image);
2176
2177 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2178 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2179 stgFree(oc->symbol_extras);
2180 #endif
2181 #endif
2182
2183 #endif
2184
2185 stgFree(oc->fileName);
2186 stgFree(oc->archiveMemberName);
2187 stgFree(oc);
2188 }
2189
2190
2191 static ObjectCode*
2192 mkOc( pathchar *path, char *image, int imageSize,
2193 char *archiveMemberName
2194 #ifndef USE_MMAP
2195 #ifdef darwin_HOST_OS
2196 , int misalignment
2197 #endif
2198 #endif
2199 ) {
2200 ObjectCode* oc;
2201
2202 IF_DEBUG(linker, debugBelch("mkOc: start\n"));
2203 oc = stgMallocBytes(sizeof(ObjectCode), "loadArchive(oc)");
2204
2205 # if defined(OBJFORMAT_ELF)
2206 oc->formatName = "ELF";
2207 # elif defined(OBJFORMAT_PEi386)
2208 oc->formatName = "PEi386";
2209 # elif defined(OBJFORMAT_MACHO)
2210 oc->formatName = "Mach-O";
2211 # else
2212 stgFree(oc);
2213 barf("loadObj: not implemented on this platform");
2214 # endif
2215
2216 oc->image = image;
2217 oc->fileName = pathdup(path);
2218
2219 if (archiveMemberName) {
2220 oc->archiveMemberName = stgMallocBytes( strlen(archiveMemberName)+1, "loadObj" );
2221 strcpy(oc->archiveMemberName, archiveMemberName);
2222 }
2223 else {
2224 oc->archiveMemberName = NULL;
2225 }
2226
2227 oc->fileSize = imageSize;
2228 oc->symbols = NULL;
2229 oc->sections = NULL;
2230 oc->proddables = NULL;
2231 oc->stable_ptrs = NULL;
2232
2233 #ifndef USE_MMAP
2234 #ifdef darwin_HOST_OS
2235 oc->misalignment = misalignment;
2236 #endif
2237 #endif
2238
2239 /* chain it onto the list of objects */
2240 oc->next = objects;
2241 objects = oc;
2242
2243 IF_DEBUG(linker, debugBelch("mkOc: done\n"));
2244 return oc;
2245 }
2246
2247 HsInt
2248 loadArchive( pathchar *path )
2249 {
2250 ObjectCode* oc;
2251 char *image;
2252 int memberSize;
2253 FILE *f;
2254 int n;
2255 size_t thisFileNameSize;
2256 char *fileName;
2257 size_t fileNameSize;
2258 int isObject, isGnuIndex;
2259 char tmp[20];
2260 char *gnuFileIndex;
2261 int gnuFileIndexSize;
2262 #if defined(darwin_HOST_OS)
2263 int i;
2264 uint32_t nfat_arch, nfat_offset, cputype, cpusubtype;
2265 #if defined(i386_HOST_ARCH)
2266 const uint32_t mycputype = CPU_TYPE_X86;
2267 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_ALL;
2268 #elif defined(x86_64_HOST_ARCH)
2269 const uint32_t mycputype = CPU_TYPE_X86_64;
2270 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_64_ALL;
2271 #elif defined(powerpc_HOST_ARCH)
2272 const uint32_t mycputype = CPU_TYPE_POWERPC;
2273 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2274 #elif defined(powerpc64_HOST_ARCH)
2275 const uint32_t mycputype = CPU_TYPE_POWERPC64;
2276 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2277 #else
2278 #error Unknown Darwin architecture
2279 #endif
2280 #if !defined(USE_MMAP)
2281 int misalignment;
2282 #endif
2283 #endif
2284
2285 IF_DEBUG(linker, debugBelch("loadArchive: start\n"));
2286 IF_DEBUG(linker, debugBelch("loadArchive: Loading archive `%" PATH_FMT" '\n", path));
2287
2288 gnuFileIndex = NULL;
2289 gnuFileIndexSize = 0;
2290
2291 fileNameSize = 32;
2292 fileName = stgMallocBytes(fileNameSize, "loadArchive(fileName)");
2293
2294 f = pathopen(path, WSTR("rb"));
2295 if (!f)
2296 barf("loadObj: can't read `%s'", path);
2297
2298 /* Check if this is an archive by looking for the magic "!<arch>\n"
2299 * string. Usually, if this fails, we barf and quit. On Darwin however,
2300 * we may have a fat archive, which contains archives for more than
2301 * one architecture. Fat archives start with the magic number 0xcafebabe,
2302 * always stored big endian. If we find a fat_header, we scan through
2303 * the fat_arch structs, searching through for one for our host
2304 * architecture. If a matching struct is found, we read the offset
2305 * of our archive data (nfat_offset) and seek forward nfat_offset bytes
2306 * from the start of the file.
2307 *
2308 * A subtlety is that all of the members of the fat_header and fat_arch
2309 * structs are stored big endian, so we need to call byte order
2310 * conversion functions.
2311 *
2312 * If we find the appropriate architecture in a fat archive, we gobble
2313 * its magic "!<arch>\n" string and continue processing just as if
2314 * we had a single architecture archive.
2315 */
2316
2317 n = fread ( tmp, 1, 8, f );
2318 if (n != 8)
2319 barf("loadArchive: Failed reading header from `%s'", path);
2320 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2321
2322 #if defined(darwin_HOST_OS)
2323 /* Not a standard archive, look for a fat archive magic number: */
2324 if (ntohl(*(uint32_t *)tmp) == FAT_MAGIC) {
2325 nfat_arch = ntohl(*(uint32_t *)(tmp + 4));
2326 IF_DEBUG(linker, debugBelch("loadArchive: found a fat archive containing %d architectures\n", nfat_arch));
2327 nfat_offset = 0;
2328
2329 for (i = 0; i < (int)nfat_arch; i++) {
2330 /* search for the right arch */
2331 n = fread( tmp, 1, 20, f );
2332 if (n != 8)
2333 barf("loadArchive: Failed reading arch from `%s'", path);
2334 cputype = ntohl(*(uint32_t *)tmp);
2335 cpusubtype = ntohl(*(uint32_t *)(tmp + 4));
2336
2337 if (cputype == mycputype && cpusubtype == mycpusubtype) {
2338 IF_DEBUG(linker, debugBelch("loadArchive: found my archive in a fat archive\n"));
2339 nfat_offset = ntohl(*(uint32_t *)(tmp + 8));
2340 break;
2341 }
2342 }
2343
2344 if (nfat_offset == 0) {
2345 barf ("loadArchive: searched %d architectures, but no host arch found", (int)nfat_arch);
2346 }
2347 else {
2348 n = fseek( f, nfat_offset, SEEK_SET );
2349 if (n != 0)
2350 barf("loadArchive: Failed to seek to arch in `%s'", path);
2351 n = fread ( tmp, 1, 8, f );
2352 if (n != 8)
2353 barf("loadArchive: Failed reading header from `%s'", path);
2354 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2355 barf("loadArchive: couldn't find archive in `%s' at offset %d", path, nfat_offset);
2356 }
2357 }
2358 }
2359 else {
2360 barf("loadArchive: Neither an archive, nor a fat archive: `%s'", path);
2361 }
2362
2363 #else
2364 barf("loadArchive: Not an archive: `%s'", path);
2365 #endif
2366 }
2367
2368 IF_DEBUG(linker, debugBelch("loadArchive: loading archive contents\n"));
2369
2370 while(1) {
2371 n = fread ( fileName, 1, 16, f );
2372 if (n != 16) {
2373 if (feof(f)) {
2374 IF_DEBUG(linker, debugBelch("loadArchive: EOF while reading from '%" PATH_FMT "'\n", path));
2375 break;
2376 }
2377 else {
2378 barf("loadArchive: Failed reading file name from `%s'", path);
2379 }
2380 }
2381
2382 #if defined(darwin_HOST_OS)
2383 if (strncmp(fileName, "!<arch>\n", 8) == 0) {
2384 IF_DEBUG(linker, debugBelch("loadArchive: found the start of another archive, breaking\n"));
2385 break;
2386 }
2387 #endif
2388
2389 n = fread ( tmp, 1, 12, f );
2390 if (n != 12)
2391 barf("loadArchive: Failed reading mod time from `%s'", path);
2392 n = fread ( tmp, 1, 6, f );
2393 if (n != 6)
2394 barf("loadArchive: Failed reading owner from `%s'", path);
2395 n = fread ( tmp, 1, 6, f );
2396 if (n != 6)
2397 barf("loadArchive: Failed reading group from `%s'", path);
2398 n = fread ( tmp, 1, 8, f );
2399 if (n != 8)
2400 barf("loadArchive: Failed reading mode from `%s'", path);
2401 n = fread ( tmp, 1, 10, f );
2402 if (n != 10)
2403 barf("loadArchive: Failed reading size from `%s'", path);
2404 tmp[10] = '\0';
2405 for (n = 0; isdigit(tmp[n]); n++);
2406 tmp[n] = '\0';
2407 memberSize = atoi(tmp);
2408
2409 IF_DEBUG(linker, debugBelch("loadArchive: size of this archive member is %d\n", memberSize));
2410 n = fread ( tmp, 1, 2, f );
2411 if (n != 2)
2412 barf("loadArchive: Failed reading magic from `%s'", path);
2413 if (strncmp(tmp, "\x60\x0A", 2) != 0)
2414 barf("loadArchive: Failed reading magic from `%s' at %ld. Got %c%c",
2415 path, ftell(f), tmp[0], tmp[1]);
2416
2417 isGnuIndex = 0;
2418 /* Check for BSD-variant large filenames */
2419 if (0 == strncmp(fileName, "#1/", 3)) {
2420 fileName[16] = '\0';
2421 if (isdigit(fileName[3])) {
2422 for (n = 4; isdigit(fileName[n]); n++);
2423 fileName[n] = '\0';
2424 thisFileNameSize = atoi(fileName + 3);
2425 memberSize -= thisFileNameSize;
2426 if (thisFileNameSize >= fileNameSize) {
2427 /* Double it to avoid potentially continually
2428 increasing it by 1 */
2429 fileNameSize = thisFileNameSize * 2;
2430 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2431 }
2432 n = fread ( fileName, 1, thisFileNameSize, f );
2433 if (n != (int)thisFileNameSize) {
2434 barf("loadArchive: Failed reading filename from `%s'",
2435 path);
2436 }
2437 fileName[thisFileNameSize] = 0;
2438
2439 /* On OS X at least, thisFileNameSize is the size of the
2440 fileName field, not the length of the fileName
2441 itself. */
2442 thisFileNameSize = strlen(fileName);
2443 }
2444 else {
2445 barf("loadArchive: BSD-variant filename size not found while reading filename from `%s'", path);
2446 }
2447 }
2448 /* Check for GNU file index file */
2449 else if (0 == strncmp(fileName, "//", 2)) {
2450 fileName[0] = '\0';
2451 thisFileNameSize = 0;
2452 isGnuIndex = 1;
2453 }
2454 /* Check for a file in the GNU file index */
2455 else if (fileName[0] == '/') {
2456 if (isdigit(fileName[1])) {
2457 int i;
2458
2459 for (n = 2; isdigit(fileName[n]); n++);
2460 fileName[n] = '\0';
2461 n = atoi(fileName + 1);
2462
2463 if (gnuFileIndex == NULL) {
2464 barf("loadArchive: GNU-variant filename without an index while reading from `%s'", path);
2465 }
2466 if (n < 0 || n > gnuFileIndexSize) {
2467 barf("loadArchive: GNU-variant filename offset %d out of range [0..%d] while reading filename from `%s'", n, gnuFileIndexSize, path);
2468 }
2469 if (n != 0 && gnuFileIndex[n - 1] != '\n') {
2470 barf("loadArchive: GNU-variant filename offset %d invalid (range [0..%d]) while reading filename from `%s'", n, gnuFileIndexSize, path);
2471 }
2472 for (i = n; gnuFileIndex[i] != '/'; i++);
2473 thisFileNameSize = i - n;
2474 if (thisFileNameSize >= fileNameSize) {
2475 /* Double it to avoid potentially continually
2476 increasing it by 1 */
2477 fileNameSize = thisFileNameSize * 2;
2478 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2479 }
2480 memcpy(fileName, gnuFileIndex + n, thisFileNameSize);
2481 fileName[thisFileNameSize] = '\0';
2482 }
2483 else if (fileName[1] == ' ') {
2484 fileName[0] = '\0';
2485 thisFileNameSize = 0;
2486 }
2487 else {
2488 barf("loadArchive: GNU-variant filename offset not found while reading filename from `%s'", path);
2489 }
2490 }
2491 /* Finally, the case where the filename field actually contains
2492 the filename */
2493 else {
2494 /* GNU ar terminates filenames with a '/', this allowing
2495 spaces in filenames. So first look to see if there is a
2496 terminating '/'. */
2497 for (thisFileNameSize = 0;
2498 thisFileNameSize < 16;
2499 thisFileNameSize++) {
2500 if (fileName[thisFileNameSize] == '/') {
2501 fileName[thisFileNameSize] = '\0';
2502 break;
2503 }
2504 }
2505 /* If we didn't find a '/', then a space teminates the
2506 filename. Note that if we don't find one, then
2507 thisFileNameSize ends up as 16, and we already have the
2508 '\0' at the end. */
2509 if (thisFileNameSize == 16) {
2510 for (thisFileNameSize = 0;
2511 thisFileNameSize < 16;
2512 thisFileNameSize++) {
2513 if (fileName[thisFileNameSize] == ' ') {
2514 fileName[thisFileNameSize] = '\0';
2515 break;
2516 }
2517 }
2518 }
2519 }
2520
2521 IF_DEBUG(linker,
2522 debugBelch("loadArchive: Found member file `%s'\n", fileName));
2523
2524 isObject = thisFileNameSize >= 2
2525 && fileName[thisFileNameSize - 2] == '.'
2526 && fileName[thisFileNameSize - 1] == 'o';
2527
2528 IF_DEBUG(linker, debugBelch("loadArchive: \tthisFileNameSize = %d\n", (int)thisFileNameSize));
2529 IF_DEBUG(linker, debugBelch("loadArchive: \tisObject = %d\n", isObject));
2530
2531 if (isObject) {
2532 char *archiveMemberName;
2533
2534 IF_DEBUG(linker, debugBelch("loadArchive: Member is an object file...loading...\n"));
2535
2536 /* We can't mmap from the archive directly, as object
2537 files need to be 8-byte aligned but files in .ar
2538 archives are 2-byte aligned. When possible we use mmap
2539 to get some anonymous memory, as on 64-bit platforms if
2540 we use malloc then we can be given memory above 2^32.
2541 In the mmap case we're probably wasting lots of space;
2542 we could do better. */
2543 #if defined(USE_MMAP)
2544 image = mmapForLinker(memberSize, MAP_ANONYMOUS, -1);
2545 #elif defined(mingw32_HOST_OS)
2546 // TODO: We would like to use allocateExec here, but allocateExec
2547 // cannot currently allocate blocks large enough.
2548 {
2549 int offset;
2550 #if defined(x86_64_HOST_ARCH)
2551 /* We get back 8-byte aligned memory (is that guaranteed?), but
2552 the offsets to the sections within the file are all 4 mod 8
2553 (is that guaranteed?). We therefore need to offset the image
2554 by 4, so that all the pointers are 8-byte aligned, so that
2555 pointer tagging works. */
2556 offset = 4;
2557 #else
2558 offset = 0;
2559 #endif
2560 image = VirtualAlloc(NULL, memberSize + offset,
2561 MEM_RESERVE | MEM_COMMIT,
2562 PAGE_EXECUTE_READWRITE);
2563 image += offset;
2564 }
2565 #elif defined(darwin_HOST_OS)
2566 /* See loadObj() */
2567 misalignment = machoGetMisalignment(f);
2568 image = stgMallocBytes(memberSize + misalignment, "loadArchive(image)");
2569 image += misalignment;
2570 #else
2571 image = stgMallocBytes(memberSize, "loadArchive(image)");
2572 #endif
2573 n = fread ( image, 1, memberSize, f );
2574 if (n != memberSize) {
2575 barf("loadArchive: error whilst reading `%s'", path);
2576 }
2577
2578 archiveMemberName = stgMallocBytes(pathlen(path) + thisFileNameSize + 3,
2579 "loadArchive(file)");
2580 sprintf(archiveMemberName, "%" PATH_FMT "(%.*s)",
2581 path, (int)thisFileNameSize, fileName);
2582
2583 oc = mkOc(path, image, memberSize, archiveMemberName
2584 #ifndef USE_MMAP
2585 #ifdef darwin_HOST_OS
2586 , misalignment
2587 #endif
2588 #endif
2589 );
2590
2591 stgFree(archiveMemberName);
2592
2593 if (0 == loadOc(oc)) {
2594 stgFree(fileName);
2595 return 0;
2596 }
2597 }
2598 else if (isGnuIndex) {
2599 if (gnuFileIndex != NULL) {
2600 barf("loadArchive: GNU-variant index found, but already have an index, while reading filename from `%s'", path);
2601 }
2602 IF_DEBUG(linker, debugBelch("loadArchive: Found GNU-variant file index\n"));
2603 #ifdef USE_MMAP
2604 gnuFileIndex = mmapForLinker(memberSize + 1, MAP_ANONYMOUS, -1);
2605 #else
2606 gnuFileIndex = stgMallocBytes(memberSize + 1, "loadArchive(image)");
2607 #endif
2608 n = fread ( gnuFileIndex, 1, memberSize, f );
2609 if (n != memberSize) {
2610 barf("loadArchive: error whilst reading `%s'", path);
2611 }
2612 gnuFileIndex[memberSize] = '/';
2613 gnuFileIndexSize = memberSize;
2614 }
2615 else {
2616 IF_DEBUG(linker, debugBelch("loadArchive: '%s' does not appear to be an object file\n", fileName));
2617 n = fseek(f, memberSize, SEEK_CUR);
2618 if (n != 0)
2619 barf("loadArchive: error whilst seeking by %d in `%s'",
2620 memberSize, path);
2621 }
2622
2623 /* .ar files are 2-byte aligned */
2624 if (memberSize % 2) {
2625 IF_DEBUG(linker, debugBelch("loadArchive: trying to read one pad byte\n"));
2626 n = fread ( tmp, 1, 1, f );
2627 if (n != 1) {
2628 if (feof(f)) {
2629 IF_DEBUG(linker, debugBelch("loadArchive: found EOF while reading one pad byte\n"));
2630 break;
2631 }
2632 else {
2633 barf("loadArchive: Failed reading padding from `%s'", path);
2634 }
2635 }
2636 IF_DEBUG(linker, debugBelch("loadArchive: successfully read one pad byte\n"));
2637 }
2638 IF_DEBUG(linker, debugBelch("loadArchive: reached end of archive loading while loop\n"));
2639 }
2640
2641 fclose(f);
2642
2643 stgFree(fileName);
2644 if (gnuFileIndex != NULL) {
2645 #ifdef USE_MMAP
2646 munmap(gnuFileIndex, gnuFileIndexSize + 1);
2647 #else
2648 stgFree(gnuFileIndex);
2649 #endif
2650 }
2651
2652 IF_DEBUG(linker, debugBelch("loadArchive: done\n"));
2653 return 1;
2654 }
2655
2656 /* -----------------------------------------------------------------------------
2657 * Load an obj (populate the global symbol table, but don't resolve yet)
2658 *
2659 * Returns: 1 if ok, 0 on error.
2660 */
2661 HsInt
2662 loadObj( pathchar *path )
2663 {
2664 ObjectCode* oc;
2665 char *image;
2666 int fileSize;
2667 struct_stat st;
2668 int r;
2669 #ifdef USE_MMAP
2670 int fd;
2671 #else
2672 FILE *f;
2673 # if defined(darwin_HOST_OS)
2674 int misalignment;
2675 # endif
2676 #endif
2677 IF_DEBUG(linker, debugBelch("loadObj %" PATH_FMT "\n", path));
2678
2679 initLinker();
2680
2681 /* debugBelch("loadObj %s\n", path ); */
2682
2683 /* Check that we haven't already loaded this object.
2684 Ignore requests to load multiple times */
2685 {
2686 ObjectCode *o;
2687 int is_dup = 0;
2688 for (o = objects; o; o = o->next) {
2689 if (0 == pathcmp(o->fileName, path)) {
2690 is_dup = 1;
2691 break; /* don't need to search further */
2692 }
2693 }
2694 if (is_dup) {
2695 IF_DEBUG(linker, debugBelch(
2696 "GHCi runtime linker: warning: looks like you're trying to load the\n"
2697 "same object file twice:\n"
2698 " %" PATH_FMT "\n"
2699 "GHCi will ignore this, but be warned.\n"
2700 , path));
2701 return 1; /* success */
2702 }
2703 }
2704
2705 r = pathstat(path, &st);
2706 if (r == -1) {
2707 IF_DEBUG(linker, debugBelch("File doesn't exist\n"));
2708 return 0;
2709 }
2710
2711 fileSize = st.st_size;
2712
2713 #ifdef USE_MMAP
2714 /* On many architectures malloc'd memory isn't executable, so we need to use mmap. */
2715
2716 #if defined(openbsd_HOST_OS)
2717 fd = open(path, O_RDONLY, S_IRUSR);
2718 #else
2719 fd = open(path, O_RDONLY);
2720 #endif
2721 if (fd == -1)
2722 barf("loadObj: can't open `%s'", path);
2723
2724 image = mmapForLinker(fileSize, 0, fd);
2725
2726 close(fd);
2727
2728 #else /* !USE_MMAP */
2729 /* load the image into memory */
2730 f = pathopen(path, WSTR("rb"));
2731 if (!f)
2732 barf("loadObj: can't read `%" PATH_FMT "'", path);
2733
2734 # if defined(mingw32_HOST_OS)
2735 // TODO: We would like to use allocateExec here, but allocateExec
2736 // cannot currently allocate blocks large enough.
2737 {
2738 int offset;
2739 #if defined(x86_64_HOST_ARCH)
2740 /* We get back 8-byte aligned memory (is that guaranteed?), but
2741 the offsets to the sections within the file are all 4 mod 8
2742 (is that guaranteed?). We therefore need to offset the image
2743 by 4, so that all the pointers are 8-byte aligned, so that
2744 pointer tagging works. */
2745 offset = 4;
2746 #else
2747 offset = 0;
2748 #endif
2749 image = VirtualAlloc(NULL, fileSize + offset, MEM_RESERVE | MEM_COMMIT,
2750 PAGE_EXECUTE_READWRITE);
2751 image += offset;
2752 }
2753 # elif defined(darwin_HOST_OS)
2754 // In a Mach-O .o file, all sections can and will be misaligned
2755 // if the total size of the headers is not a multiple of the
2756 // desired alignment. This is fine for .o files that only serve
2757 // as input for the static linker, but it's not fine for us,
2758 // as SSE (used by gcc for floating point) and Altivec require
2759 // 16-byte alignment.
2760 // We calculate the correct alignment from the header before
2761 // reading the file, and then we misalign image on purpose so
2762 // that the actual sections end up aligned again.
2763 misalignment = machoGetMisalignment(f);
2764 image = stgMallocBytes(fileSize + misalignment, "loadObj(image)");
2765 image += misalignment;
2766 # else
2767 image = stgMallocBytes(fileSize, "loadObj(image)");
2768 # endif
2769
2770 {
2771 int n;
2772 n = fread ( image, 1, fileSize, f );
2773 if (n != fileSize)
2774 barf("loadObj: error whilst reading `%s'", path);
2775 }
2776 fclose(f);
2777 #endif /* USE_MMAP */
2778
2779 oc = mkOc(path, image, fileSize, NULL
2780 #ifndef USE_MMAP
2781 #ifdef darwin_HOST_OS
2782 , misalignment
2783 #endif
2784 #endif
2785 );
2786
2787 return loadOc(oc);
2788 }
2789
2790 static HsInt
2791 loadOc( ObjectCode* oc ) {
2792 int r;
2793
2794 IF_DEBUG(linker, debugBelch("loadOc: start\n"));
2795
2796 # if defined(OBJFORMAT_MACHO) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH))
2797 r = ocAllocateSymbolExtras_MachO ( oc );
2798 if (!r) {
2799 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_MachO failed\n"));
2800 return r;
2801 }
2802 # elif defined(OBJFORMAT_ELF) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH))
2803 r = ocAllocateSymbolExtras_ELF ( oc );
2804 if (!r) {
2805 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_ELF failed\n"));
2806 return r;
2807 }
2808 #endif
2809
2810 /* verify the in-memory image */
2811 # if defined(OBJFORMAT_ELF)
2812 r = ocVerifyImage_ELF ( oc );
2813 # elif defined(OBJFORMAT_PEi386)
2814 r = ocVerifyImage_PEi386 ( oc );
2815 # elif defined(OBJFORMAT_MACHO)
2816 r = ocVerifyImage_MachO ( oc );
2817 # else
2818 barf("loadObj: no verify method");
2819 # endif
2820 if (!r) {
2821 IF_DEBUG(linker, debugBelch("loadOc: ocVerifyImage_* failed\n"));
2822 return r;
2823 }
2824
2825 /* build the symbol list for this image */
2826 # if defined(OBJFORMAT_ELF)
2827 r = ocGetNames_ELF ( oc );
2828 # elif defined(OBJFORMAT_PEi386)
2829 r = ocGetNames_PEi386 ( oc );
2830 # elif defined(OBJFORMAT_MACHO)
2831 r = ocGetNames_MachO ( oc );
2832 # else
2833 barf("loadObj: no getNames method");
2834 # endif
2835 if (!r) {
2836 IF_DEBUG(linker, debugBelch("loadOc: ocGetNames_* failed\n"));
2837 return r;
2838 }
2839
2840 /* loaded, but not resolved yet */
2841 oc->status = OBJECT_LOADED;
2842 IF_DEBUG(linker, debugBelch("loadOc: done.\n"));
2843
2844 return 1;
2845 }
2846
2847 /* -----------------------------------------------------------------------------
2848 * resolve all the currently unlinked objects in memory
2849 *
2850 * Returns: 1 if ok, 0 on error.
2851 */
2852 HsInt
2853 resolveObjs( void )
2854 {
2855 ObjectCode *oc;
2856 int r;
2857
2858 IF_DEBUG(linker, debugBelch("resolveObjs: start\n"));
2859 initLinker();
2860
2861 for (oc = objects; oc; oc = oc->next) {
2862 if (oc->status != OBJECT_RESOLVED) {
2863 # if defined(OBJFORMAT_ELF)
2864 r = ocResolve_ELF ( oc );
2865 # elif defined(OBJFORMAT_PEi386)
2866 r = ocResolve_PEi386 ( oc );
2867 # elif defined(OBJFORMAT_MACHO)
2868 r = ocResolve_MachO ( oc );
2869 # else
2870 barf("resolveObjs: not implemented on this platform");
2871 # endif
2872 if (!r) { return r; }
2873
2874 // run init/init_array/ctors/mod_init_func
2875
2876 loading_obj = oc; // tells foreignExportStablePtr what to do
2877 #if defined(OBJFORMAT_ELF)
2878 r = ocRunInit_ELF ( oc );
2879 #elif defined(OBJFORMAT_PEi386)
2880 r = ocRunInit_PEi386 ( oc );
2881 #elif defined(OBJFORMAT_MACHO)
2882 r = ocRunInit_MachO ( oc );
2883 #else
2884 barf("resolveObjs: initializers not implemented on this platform");
2885 #endif
2886 loading_obj = NULL;
2887
2888 if (!r) { return r; }
2889
2890 oc->status = OBJECT_RESOLVED;
2891 }
2892 }
2893 IF_DEBUG(linker, debugBelch("resolveObjs: done\n"));
2894 return 1;
2895 }
2896
2897 /* -----------------------------------------------------------------------------
2898 * delete an object from the pool
2899 */
2900 HsInt
2901 unloadObj( pathchar *path )
2902 {
2903 ObjectCode *oc, *prev, *next;
2904 HsBool unloadedAnyObj = HS_BOOL_FALSE;
2905
2906 ASSERT(symhash != NULL);
2907 ASSERT(objects != NULL);
2908
2909 initLinker();
2910
2911 IF_DEBUG(linker, debugBelch("unloadObj: %" PATH_FMT "\n", path));
2912
2913 prev = NULL;
2914 for (oc = objects; oc; prev = oc, oc = next) {
2915 next = oc->next;
2916
2917 if (!pathcmp(oc->fileName,path)) {
2918
2919 /* Remove all the mappings for the symbols within this
2920 * object..
2921 */
2922 {
2923 int i;
2924 for (i = 0; i < oc->n_symbols; i++) {
2925 if (oc->symbols[i] != NULL) {
2926 ghciRemoveSymbolTable(symhash, oc->symbols[i], oc);
2927 }
2928 }
2929 }
2930
2931 if (prev == NULL) {
2932 objects = oc->next;
2933 } else {
2934 prev->next = oc->next;
2935 }
2936 oc->next = unloaded_objects;
2937 unloaded_objects = oc;
2938
2939 // The data itself and a few other bits (oc->fileName,
2940 // oc->archiveMemberName) are kept until freeObjectCode(),
2941 // which is only called when it has been determined that
2942 // it is safe to unload the object.
2943 stgFree(oc->symbols);
2944
2945 {
2946 Section *s, *nexts;
2947
2948 for (s = oc->sections; s != NULL; s = nexts) {
2949 nexts = s->next;
2950 stgFree(s);
2951 }
2952 }
2953
2954 freeProddableBlocks(oc);
2955
2956 // Release any StablePtrs that were created when this
2957 // object module was initialized.
2958 {
2959 ForeignExportStablePtr *fe_ptr, *next;
2960
2961 for (fe_ptr = oc->stable_ptrs; fe_ptr != NULL; fe_ptr = next) {
2962 next = fe_ptr->next;
2963 freeStablePtr(fe_ptr->stable_ptr);
2964 stgFree(fe_ptr);
2965 }
2966 }
2967
2968 oc->status = OBJECT_UNLOADED;
2969
2970 /* This could be a member of an archive so continue
2971 * unloading other members. */
2972 unloadedAnyObj = HS_BOOL_TRUE;
2973 }
2974 }
2975
2976 if (unloadedAnyObj) {
2977 return 1;
2978 }
2979 else {
2980 errorBelch("unloadObj: can't find `%" PATH_FMT "' to unload", path);
2981 return 0;
2982 }
2983 }
2984
2985 /* -----------------------------------------------------------------------------
2986 * Sanity checking. For each ObjectCode, maintain a list of address ranges
2987 * which may be prodded during relocation, and abort if we try and write
2988 * outside any of these.
2989 */
2990 static void
2991 addProddableBlock ( ObjectCode* oc, void* start, int size )
2992 {
2993 ProddableBlock* pb
2994 = stgMallocBytes(sizeof(ProddableBlock), "addProddableBlock");
2995
2996 IF_DEBUG(linker, debugBelch("addProddableBlock: %p %p %d\n", oc, start, size));
2997 ASSERT(size > 0);
2998 pb->start = start;
2999 pb->size = size;
3000 pb->next = oc->proddables;
3001 oc->proddables = pb;
3002 }
3003
3004 static void
3005 checkProddableBlock (ObjectCode *oc, void *addr, size_t size )
3006 {
3007 ProddableBlock* pb;
3008
3009 for (pb = oc->proddables; pb != NULL; pb = pb->next) {
3010 char* s = (char*)(pb->start);
3011 char* e = s + pb->size;
3012 char* a = (char*)addr;
3013 if (a >= s && (a+size) <= e) return;
3014 }
3015 barf("checkProddableBlock: invalid fixup in runtime linker: %p", addr);
3016 }
3017
3018 static void freeProddableBlocks (ObjectCode *oc)
3019 {
3020 ProddableBlock *pb, *next;
3021
3022 for (pb = oc->proddables; pb != NULL; pb = next) {
3023 next = pb->next;
3024 stgFree(pb);
3025 }
3026 oc->proddables = NULL;
3027 }
3028
3029 /* -----------------------------------------------------------------------------
3030 * Section management.
3031 */
3032 static void
3033 addSection ( ObjectCode* oc, SectionKind kind,
3034 void* start, void* end )
3035 {
3036 Section* s = stgMallocBytes(sizeof(Section), "addSection");
3037 s->start = start;
3038 s->end = end;
3039 s->kind = kind;
3040 s->next = oc->sections;
3041 oc->sections = s;
3042
3043 IF_DEBUG(linker, debugBelch("addSection: %p-%p (size %lld), kind %d\n",
3044 start, ((char*)end)-1, ((long long)(size_t)end) - ((long long)(size_t)start) + 1, kind ));
3045 }
3046
3047
3048 /* --------------------------------------------------------------------------
3049 * Symbol Extras.
3050 * This is about allocating a small chunk of memory for every symbol in the
3051 * object file. We make sure that the SymboLExtras are always "in range" of
3052 * limited-range PC-relative instructions on various platforms by allocating
3053 * them right next to the object code itself.
3054 */
3055
3056 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3057 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3058
3059 /*
3060 ocAllocateSymbolExtras
3061
3062 Allocate additional space at the end of the object file image to make room
3063 for jump islands (powerpc, x86_64, arm) and GOT entries (x86_64).
3064
3065 PowerPC relative branch instructions have a 24 bit displacement field.
3066 As PPC code is always 4-byte-aligned, this yields a +-32MB range.
3067 If a particular imported symbol is outside this range, we have to redirect
3068 the jump to a short piece of new code that just loads the 32bit absolute
3069 address and jumps there.
3070 On x86_64, PC-relative jumps and PC-relative accesses to the GOT are limited
3071 to 32 bits (+-2GB).
3072
3073 This function just allocates space for one SymbolExtra for every
3074 undefined symbol in the object file. The code for the jump islands is
3075 filled in by makeSymbolExtra below.
3076 */
3077
3078 static int ocAllocateSymbolExtras( ObjectCode* oc, int count, int first )
3079 {
3080 #ifdef USE_MMAP
3081 int pagesize, n, m;
3082 #endif
3083 int aligned;
3084 #ifndef USE_MMAP
3085 int misalignment = 0;
3086 #ifdef darwin_HOST_OS
3087 misalignment = oc->misalignment;
3088 #endif
3089 #endif
3090
3091 if( count > 0 )
3092 {
3093 // round up to the nearest 4
3094 aligned = (oc->fileSize + 3) & ~3;
3095
3096 #ifdef USE_MMAP
3097 pagesize = getpagesize();
3098 n = ROUND_UP( oc->fileSize, pagesize );
3099 m = ROUND_UP( aligned + sizeof (SymbolExtra) * count, pagesize );
3100
3101 /* we try to use spare space at the end of the last page of the
3102 * image for the jump islands, but if there isn't enough space
3103 * then we have to map some (anonymously, remembering MAP_32BIT).
3104 */
3105 if( m > n ) // we need to allocate more pages
3106 {
3107 if (USE_CONTIGUOUS_MMAP)
3108 {
3109 /* Keep image and symbol_extras contiguous */
3110 void *new = mmapForLinker(n + (sizeof(SymbolExtra) * count),
3111 MAP_ANONYMOUS, -1);
3112 if (new)
3113 {
3114 memcpy(new, oc->image, oc->fileSize);
3115 munmap(oc->image, n);
3116 oc->image = new;
3117 oc->fileSize = n + (sizeof(SymbolExtra) * count);
3118 oc->symbol_extras = (SymbolExtra *) (oc->image + n);
3119 }
3120 else
3121 oc->symbol_extras = NULL;
3122 }
3123 else
3124 {
3125 oc->symbol_extras = mmapForLinker(sizeof(SymbolExtra) * count,
3126 MAP_ANONYMOUS, -1);
3127 }
3128 }
3129 else
3130 {
3131 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3132 }
3133 #else
3134 oc->image -= misalignment;
3135 oc->image = stgReallocBytes( oc->image,
3136 misalignment +
3137 aligned + sizeof (SymbolExtra) * count,
3138 "ocAllocateSymbolExtras" );
3139 oc->image += misalignment;
3140
3141 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3142 #endif /* USE_MMAP */
3143
3144 memset( oc->symbol_extras, 0, sizeof (SymbolExtra) * count );
3145 }
3146 else
3147 oc->symbol_extras = NULL;
3148
3149 oc->first_symbol_extra = first;
3150 oc->n_symbol_extras = count;
3151
3152 return 1;
3153 }
3154
3155 #endif
3156 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3157
3158 #if defined(arm_HOST_ARCH)
3159
3160 static void
3161 ocFlushInstructionCache( ObjectCode *oc )
3162 {
3163 // Object code
3164 __clear_cache(oc->image, oc->image + oc->fileSize);
3165 // Jump islands
3166 __clear_cache(oc->symbol_extras, &oc->symbol_extras[oc->n_symbol_extras]);
3167 }
3168
3169 #endif
3170
3171 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3172 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3173
3174 static SymbolExtra* makeSymbolExtra( ObjectCode* oc,
3175 unsigned long symbolNumber,
3176 unsigned long target )
3177 {
3178 SymbolExtra *extra;
3179
3180 ASSERT( symbolNumber >= oc->first_symbol_extra
3181 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3182
3183 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3184
3185 #ifdef powerpc_HOST_ARCH
3186 // lis r12, hi16(target)
3187 extra->jumpIsland.lis_r12 = 0x3d80;
3188 extra->jumpIsland.hi_addr = target >> 16;
3189
3190 // ori r12, r12, lo16(target)
3191 extra->jumpIsland.ori_r12_r12 = 0x618c;
3192 extra->jumpIsland.lo_addr = target & 0xffff;
3193
3194 // mtctr r12
3195 extra->jumpIsland.mtctr_r12 = 0x7d8903a6;
3196
3197 // bctr
3198 extra->jumpIsland.bctr = 0x4e800420;
3199 #endif
3200 #ifdef x86_64_HOST_ARCH
3201 // jmp *-14(%rip)
3202 static uint8_t jmp[] = { 0xFF, 0x25, 0xF2, 0xFF, 0xFF, 0xFF };
3203 extra->addr = target;
3204 memcpy(extra->jumpIsland, jmp, 6);
3205 #endif
3206
3207 return extra;
3208 }
3209
3210 #endif
3211 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3212
3213 #ifdef arm_HOST_ARCH
3214 static SymbolExtra* makeArmSymbolExtra( ObjectCode* oc,
3215 unsigned long symbolNumber,
3216 unsigned long target,
3217 int fromThumb,
3218 int toThumb )
3219 {
3220 SymbolExtra *extra;
3221
3222 ASSERT( symbolNumber >= oc->first_symbol_extra
3223 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3224
3225 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3226
3227 // Make sure instruction mode bit is set properly
3228 if (toThumb)
3229 target |= 1;
3230 else
3231 target &= ~1;
3232
3233 if (!fromThumb) {
3234 // In ARM encoding:
3235 // movw r12, #0
3236 // movt r12, #0
3237 // bx r12
3238 uint32_t code[] = { 0xe300c000, 0xe340c000, 0xe12fff1c };
3239
3240 // Patch lower half-word into movw
3241 code[0] |= ((target>>12) & 0xf) << 16;
3242 code[0] |= target & 0xfff;
3243 // Patch upper half-word into movt
3244 target >>= 16;
3245 code[1] |= ((target>>12) & 0xf) << 16;
3246 code[1] |= target & 0xfff;
3247
3248 memcpy(extra->jumpIsland, code, 12);
3249
3250 } else {
3251 // In Thumb encoding:
3252 // movw r12, #0
3253 // movt r12, #0
3254 // bx r12
3255 uint16_t code[] = { 0xf240, 0x0c00,
3256 0xf2c0, 0x0c00,
3257 0x4760 };
3258
3259 // Patch lower half-word into movw
3260 code[0] |= (target>>12) & 0xf;
3261 code[0] |= ((target>>11) & 0x1) << 10;
3262 code[1] |= ((target>>8) & 0x7) << 12;
3263 code[1] |= target & 0xff;
3264 // Patch upper half-word into movt
3265 target >>= 16;
3266 code[2] |= (target>>12) & 0xf;
3267 code[2] |= ((target>>11) & 0x1) << 10;
3268 code[3] |= ((target>>8) & 0x7) << 12;
3269 code[3] |= target & 0xff;
3270
3271 memcpy(extra->jumpIsland, code, 10);
3272 }
3273
3274 return extra;
3275 }
3276 #endif // arm_HOST_ARCH
3277
3278 /* --------------------------------------------------------------------------
3279 * PowerPC specifics (instruction cache flushing)
3280 * ------------------------------------------------------------------------*/
3281
3282 #ifdef powerpc_HOST_ARCH
3283 /*
3284 ocFlushInstructionCache
3285
3286 Flush the data & instruction caches.
3287 Because the PPC has split data/instruction caches, we have to
3288 do that whenever we modify code at runtime.
3289 */
3290
3291 static void
3292 ocFlushInstructionCacheFrom(void* begin, size_t length)
3293 {
3294 size_t n = (length + 3) / 4;
3295 unsigned long* p = begin;
3296
3297 while (n--)
3298 {
3299 __asm__ volatile ( "dcbf 0,%0\n\t"
3300 "sync\n\t"
3301 "icbi 0,%0"
3302 :
3303 : "r" (p)
3304 );
3305 p++;
3306 }
3307 __asm__ volatile ( "sync\n\t"
3308 "isync"
3309 );
3310 }
3311
3312 static void
3313 ocFlushInstructionCache( ObjectCode *oc )
3314 {
3315 /* The main object code */
3316 ocFlushInstructionCacheFrom(oc->image
3317 #ifdef darwin_HOST_OS
3318 + oc->misalignment
3319 #endif
3320 , oc->fileSize);
3321
3322 /* Jump Islands */
3323 ocFlushInstructionCacheFrom(oc->symbol_extras, sizeof(SymbolExtra) * oc->n_symbol_extras);
3324 }
3325 #endif /* powerpc_HOST_ARCH */
3326
3327
3328 /* --------------------------------------------------------------------------
3329 * PEi386 specifics (Win32 targets)
3330 * ------------------------------------------------------------------------*/
3331
3332 /* The information for this linker comes from
3333 Microsoft Portable Executable
3334 and Common Object File Format Specification
3335 revision 5.1 January 1998
3336 which SimonM says comes from the MS Developer Network CDs.
3337
3338 It can be found there (on older CDs), but can also be found
3339 online at:
3340
3341 http://www.microsoft.com/hwdev/hardware/PECOFF.asp
3342
3343 (this is Rev 6.0 from February 1999).
3344
3345 Things move, so if that fails, try searching for it via
3346
3347 http://www.google.com/search?q=PE+COFF+specification
3348
3349 The ultimate reference for the PE format is the Winnt.h
3350 header file that comes with the Platform SDKs; as always,
3351 implementations will drift wrt their documentation.
3352
3353 A good background article on the PE format is Matt Pietrek's
3354 March 1994 article in Microsoft System Journal (MSJ)
3355 (Vol.9, No. 3): "Peering Inside the PE: A Tour of the
3356 Win32 Portable Executable File Format." The info in there
3357 has recently been updated in a two part article in
3358 MSDN magazine, issues Feb and March 2002,
3359 "Inside Windows: An In-Depth Look into the Win32 Portable
3360 Executable File Format"
3361
3362 John Levine's book "Linkers and Loaders" contains useful
3363 info on PE too.
3364 */
3365
3366
3367 #if defined(OBJFORMAT_PEi386)
3368
3369
3370
3371 typedef unsigned char UChar;
3372 typedef unsigned short UInt16;
3373 typedef unsigned int UInt32;
3374 typedef int Int32;
3375 typedef unsigned long long int UInt64;
3376
3377
3378 typedef
3379 struct {
3380 UInt16 Machine;
3381 UInt16 NumberOfSections;
3382 UInt32 TimeDateStamp;
3383 UInt32 PointerToSymbolTable;
3384 UInt32 NumberOfSymbols;
3385 UInt16 SizeOfOptionalHeader;
3386 UInt16 Characteristics;
3387 }
3388 COFF_header;
3389
3390 #define sizeof_COFF_header 20
3391
3392
3393 typedef
3394 struct {
3395 UChar Name[8];
3396 UInt32 VirtualSize;
3397 UInt32 VirtualAddress;
3398 UInt32 SizeOfRawData;
3399 UInt32 PointerToRawData;
3400 UInt32 PointerToRelocations;
3401 UInt32 PointerToLinenumbers;
3402 UInt16 NumberOfRelocations;
3403 UInt16 NumberOfLineNumbers;
3404 UInt32 Characteristics;
3405 }
3406 COFF_section;
3407
3408 #define sizeof_COFF_section 40
3409
3410
3411 typedef
3412 struct {
3413 UChar Name[8];
3414 UInt32 Value;
3415 UInt16 SectionNumber;
3416 UInt16 Type;
3417 UChar StorageClass;
3418 UChar NumberOfAuxSymbols;
3419 }
3420 COFF_symbol;
3421
3422 #define sizeof_COFF_symbol 18
3423
3424
3425 typedef
3426 struct {
3427 UInt32 VirtualAddress;
3428 UInt32 SymbolTableIndex;
3429 UInt16 Type;
3430 }
3431 COFF_reloc;
3432
3433 #define sizeof_COFF_reloc 10
3434
3435
3436 /* From PE spec doc, section 3.3.2 */
3437 /* Note use of MYIMAGE_* since IMAGE_* are already defined in
3438 windows.h -- for the same purpose, but I want to know what I'm
3439 getting, here. */
3440 #define MYIMAGE_FILE_RELOCS_STRIPPED 0x0001
3441 #define MYIMAGE_FILE_EXECUTABLE_IMAGE 0x0002
3442 #define MYIMAGE_FILE_DLL 0x2000
3443 #define MYIMAGE_FILE_SYSTEM 0x1000
3444 #define MYIMAGE_FILE_BYTES_REVERSED_HI 0x8000
3445 #define MYIMAGE_FILE_BYTES_REVERSED_LO 0x0080
3446 #define MYIMAGE_FILE_32BIT_MACHINE 0x0100
3447
3448 /* From PE spec doc, section 5.4.2 and 5.4.4 */
3449 #define MYIMAGE_SYM_CLASS_EXTERNAL 2
3450 #define MYIMAGE_SYM_CLASS_STATIC 3
3451 #define MYIMAGE_SYM_UNDEFINED 0
3452
3453 /* From PE spec doc, section 4.1 */
3454 #define MYIMAGE_SCN_CNT_CODE 0x00000020
3455 #define MYIMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
3456 #define MYIMAGE_SCN_LNK_NRELOC_OVFL 0x01000000
3457
3458 /* From PE spec doc, section 5.2.1 */
3459 #define MYIMAGE_REL_I386_DIR32 0x0006
3460 #define MYIMAGE_REL_I386_REL32 0x0014
3461
3462
3463 /* We use myindex to calculate array addresses, rather than
3464 simply doing the normal subscript thing. That's because
3465 some of the above structs have sizes which are not
3466 a whole number of words. GCC rounds their sizes up to a
3467 whole number of words, which means that the address calcs
3468 arising from using normal C indexing or pointer arithmetic
3469 are just plain wrong. Sigh.
3470 */
3471 static UChar *
3472 myindex ( int scale, void* base, int index )
3473 {
3474 return
3475 ((UChar*)base) + scale * index;
3476 }
3477
3478
3479 static void
3480 printName ( UChar* name, UChar* strtab )
3481 {
3482 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3483 UInt32 strtab_offset = * (UInt32*)(name+4);
3484 debugBelch("%s", strtab + strtab_offset );
3485 } else {
3486 int i;
3487 for (i = 0; i < 8; i++) {
3488 if (name[i] == 0) break;
3489 debugBelch("%c", name[i] );
3490 }
3491 }
3492 }
3493
3494
3495 static void
3496 copyName ( UChar* name, UChar* strtab, UChar* dst, int dstSize )
3497 {
3498 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3499 UInt32 strtab_offset = * (UInt32*)(name+4);
3500 strncpy ( (char*)dst, (char*)strtab+strtab_offset, dstSize );
3501 dst[dstSize-1] = 0;
3502 } else {
3503 int i = 0;
3504 while (1) {
3505 if (i >= 8) break;
3506 if (name[i] == 0) break;
3507 dst[i] = name[i];
3508 i++;
3509 }
3510 dst[i] = 0;
3511 }
3512 }
3513
3514
3515 static UChar *
3516 cstring_from_COFF_symbol_name ( UChar* name, UChar* strtab )
3517 {
3518 UChar* newstr;
3519 /* If the string is longer than 8 bytes, look in the
3520 string table for it -- this will be correctly zero terminated.
3521 */
3522 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3523 UInt32 strtab_offset = * (UInt32*)(name+4);
3524 return ((UChar*)strtab) + strtab_offset;
3525 }
3526 /* Otherwise, if shorter than 8 bytes, return the original,
3527 which by defn is correctly terminated.
3528 */
3529 if (name[7]==0) return name;
3530 /* The annoying case: 8 bytes. Copy into a temporary
3531 (XXX which is never freed ...)
3532 */
3533 newstr = stgMallocBytes(9, "cstring_from_COFF_symbol_name");
3534 ASSERT(newstr);
3535 strncpy((char*)newstr,(char*)name,8);
3536 newstr[8] = 0;
3537 return newstr;
3538 }
3539
3540 /* Getting the name of a section is mildly tricky, so we make a
3541 function for it. Sadly, in one case we have to copy the string
3542 (when it is exactly 8 bytes long there's no trailing '\0'), so for
3543 consistency we *always* copy the string; the caller must free it
3544 */
3545 static char *
3546 cstring_from_section_name (UChar* name, UChar* strtab)
3547 {
3548 char *newstr;
3549
3550 if (name[0]=='/') {
3551 int strtab_offset = strtol((char*)name+1,NULL,10);
3552 int len = strlen(((char*)strtab) + strtab_offset);
3553
3554 newstr = stgMallocBytes(len+1, "cstring_from_section_symbol_name");
3555 strcpy((char*)newstr, (char*)((UChar*)strtab) + strtab_offset);
3556 return newstr;
3557 }
3558 else
3559 {
3560 newstr = stgMallocBytes(9, "cstring_from_section_symbol_name");
3561 ASSERT(newstr);
3562 strncpy((char*)newstr,(char*)name,8);
3563 newstr[8] = 0;
3564 return newstr;
3565 }
3566 }
3567
3568 /* Just compares the short names (first 8 chars) */
3569 static COFF_section *
3570 findPEi386SectionCalled ( ObjectCode* oc, UChar* name )
3571 {
3572 int i;
3573 COFF_header* hdr
3574 = (COFF_header*)(oc->image);
3575 COFF_section* sectab
3576 = (COFF_section*) (
3577 ((UChar*)(oc->image))
3578 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3579 );
3580 for (i = 0; i < hdr->NumberOfSections; i++) {
3581 UChar* n1;
3582 UChar* n2;
3583 COFF_section* section_i
3584 = (COFF_section*)
3585 myindex ( sizeof_COFF_section, sectab, i );
3586 n1 = (UChar*) &(section_i->Name);
3587 n2 = name;
3588 if (n1[0]==n2[0] && n1[1]==n2[1] && n1[2]==n2[2] &&
3589 n1[3]==n2[3] && n1[4]==n2[4] && n1[5]==n2[5] &&
3590 n1[6]==n2[6] && n1[7]==n2[7])
3591 return section_i;
3592 }
3593
3594 return NULL;
3595 }
3596
3597 static void
3598 zapTrailingAtSign ( UChar* sym )
3599 {
3600 # define my_isdigit(c) ((c) >= '0' && (c) <= '9')
3601 int i, j;
3602 if (sym[0] == 0) return;
3603 i = 0;
3604 while (sym[i] != 0) i++;
3605 i--;
3606 j = i;
3607 while (j > 0 && my_isdigit(sym[j])) j--;
3608 if (j > 0 && sym[j] == '@' && j != i) sym[j] = 0;
3609 # undef my_isdigit
3610 }
3611
3612 static void *
3613 lookupSymbolInDLLs ( UChar *lbl )
3614 {
3615 OpenedDLL* o_dll;
3616 void *sym;
3617
3618 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
3619 /* debugBelch("look in %s for %s\n", o_dll->name, lbl); */
3620
3621 if (lbl[0] == '_') {
3622 /* HACK: if the name has an initial underscore, try stripping
3623 it off & look that up first. I've yet to verify whether there's
3624 a Rule that governs whether an initial '_' *should always* be
3625 stripped off when mapping from import lib name to the DLL name.
3626 */
3627 sym = GetProcAddress(o_dll->instance, (char*)(lbl+1));
3628 if (sym != NULL) {
3629 /*debugBelch("found %s in %s\n", lbl+1,o_dll->name);*/
3630 return sym;
3631 }
3632 }
3633 sym = GetProcAddress(o_dll->instance, (char*)lbl);
3634 if (sym != NULL) {
3635 /*debugBelch("found %s in %s\n", lbl,o_dll->name);*/
3636 return sym;
3637 }
3638 }
3639 return NULL;
3640 }
3641
3642
3643 static int
3644 ocVerifyImage_PEi386 ( ObjectCode* oc )
3645 {
3646 int i;
3647 UInt32 j, noRelocs;
3648 COFF_header* hdr;
3649 COFF_section* sectab;
3650 COFF_symbol* symtab;
3651 UChar* strtab;
3652 /* debugBelch("\nLOADING %s\n", oc->fileName); */
3653 hdr = (COFF_header*)(oc->image);
3654 sectab = (COFF_section*) (
3655 ((UChar*)(oc->image))
3656 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3657 );
3658 symtab = (COFF_symbol*) (
3659 ((UChar*)(oc->image))
3660 + hdr->PointerToSymbolTable
3661 );
3662 strtab = ((UChar*)symtab)
3663 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3664
3665 #if defined(i386_HOST_ARCH)
3666 if (hdr->Machine != 0x14c) {
3667 errorBelch("%" PATH_FMT ": Not x86 PEi386", oc->fileName);
3668 return 0;
3669 }
3670 #elif defined(x86_64_HOST_ARCH)
3671 if (hdr->Machine != 0x8664) {
3672 errorBelch("%" PATH_FMT ": Not x86_64 PEi386", oc->fileName);
3673 return 0;
3674 }
3675 #else
3676 errorBelch("PEi386 not supported on this arch");
3677 #endif
3678
3679 if (hdr->SizeOfOptionalHeader != 0) {
3680 errorBelch("%" PATH_FMT ": PEi386 with nonempty optional header", oc->fileName);
3681 return 0;
3682 }
3683 if ( /* (hdr->Characteristics & MYIMAGE_FILE_RELOCS_STRIPPED) || */
3684 (hdr->Characteristics & MYIMAGE_FILE_EXECUTABLE_IMAGE) ||
3685 (hdr->Characteristics & MYIMAGE_FILE_DLL) ||
3686 (hdr->Characteristics & MYIMAGE_FILE_SYSTEM) ) {
3687 errorBelch("%" PATH_FMT ": Not a PEi386 object file", oc->fileName);
3688 return 0;
3689 }
3690 if ( (hdr->Characteristics & MYIMAGE_FILE_BYTES_REVERSED_HI)
3691 /* || !(hdr->Characteristics & MYIMAGE_FILE_32BIT_MACHINE) */ ) {
3692 errorBelch("%" PATH_FMT ": Invalid PEi386 word size or endiannness: %d",
3693 oc->fileName,
3694 (int)(hdr->Characteristics));
3695 return 0;
3696 }
3697 /* If the string table size is way crazy, this might indicate that
3698 there are more than 64k relocations, despite claims to the
3699 contrary. Hence this test. */
3700 /* debugBelch("strtab size %d\n", * (UInt32*)strtab); */
3701 #if 0
3702 if ( (*(UInt32*)strtab) > 600000 ) {
3703 /* Note that 600k has no special significance other than being
3704 big enough to handle the almost-2MB-sized lumps that
3705 constitute HSwin32*.o. */
3706 debugBelch("PEi386 object has suspiciously large string table; > 64k relocs?");
3707 return 0;
3708 }
3709 #endif
3710
3711 /* No further verification after this point; only debug printing. */
3712 i = 0;
3713 IF_DEBUG(linker, i=1);
3714 if (i == 0) return 1;
3715
3716 debugBelch( "sectab offset = %" FMT_Int "\n", ((UChar*)sectab) - ((UChar*)hdr) );
3717 debugBelch( "symtab offset = %" FMT_Int "\n", ((UChar*)symtab) - ((UChar*)hdr) );
3718 debugBelch( "strtab offset = %" FMT_Int "\n", ((UChar*)strtab) - ((UChar*)hdr) );
3719
3720 debugBelch("\n" );
3721 debugBelch( "Machine: 0x%x\n", (UInt32)(hdr->Machine) );
3722 debugBelch( "# sections: %d\n", (UInt32)(hdr->NumberOfSections) );
3723 debugBelch( "time/date: 0x%x\n", (UInt32)(hdr->TimeDateStamp) );
3724 debugBelch( "symtab offset: %d\n", (UInt32)(hdr->PointerToSymbolTable) );
3725 debugBelch( "# symbols: %d\n", (UInt32)(hdr->NumberOfSymbols) );
3726 debugBelch( "sz of opt hdr: %d\n", (UInt32)(hdr->SizeOfOptionalHeader) );
3727 debugBelch( "characteristics: 0x%x\n", (UInt32)(hdr->Characteristics) );
3728
3729 /* Print the section table. */
3730 debugBelch("\n" );
3731 for (i = 0; i < hdr->NumberOfSections; i++) {
3732 COFF_reloc* reltab;
3733 COFF_section* sectab_i
3734 = (COFF_section*)
3735 myindex ( sizeof_COFF_section, sectab, i );
3736 debugBelch(
3737 "\n"
3738 "section %d\n"
3739 " name `",
3740 i
3741 );
3742 printName ( sectab_i->Name, strtab );
3743 debugBelch(
3744 "'\n"
3745 " vsize %d\n"
3746 " vaddr %d\n"
3747 " data sz %d\n"
3748 " data off %d\n"
3749 " num rel %d\n"
3750 " off rel %d\n"
3751 " ptr raw 0x%x\n",
3752 sectab_i->VirtualSize,
3753 sectab_i->VirtualAddress,
3754 sectab_i->SizeOfRawData,
3755 sectab_i->PointerToRawData,
3756 sectab_i->NumberOfRelocations,
3757 sectab_i->PointerToRelocations,
3758 sectab_i->PointerToRawData
3759 );
3760 reltab = (COFF_reloc*) (
3761 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
3762 );
3763
3764 if ( sectab_i->Characteristics & MYIMAGE_SCN_LNK_NRELOC_OVFL ) {
3765 /* If the relocation field (a short) has overflowed, the
3766 * real count can be found in the first reloc entry.
3767 *
3768 * See Section 4.1 (last para) of the PE spec (rev6.0).
3769 */
3770 COFF_reloc* rel = (COFF_reloc*)
3771 myindex ( sizeof_COFF_reloc, reltab, 0 );
3772 noRelocs = rel->VirtualAddress;
3773 j = 1;
3774 } else {
3775 noRelocs = sectab_i->NumberOfRelocations;
3776 j = 0;
3777 }
3778
3779 for (; j < noRelocs; j++) {
3780 COFF_symbol* sym;
3781 COFF_reloc* rel = (COFF_reloc*)
3782 myindex ( sizeof_COFF_reloc, reltab, j );
3783 debugBelch(
3784 " type 0x%-4x vaddr 0x%-8x name `",
3785 (UInt32)rel->Type,
3786 rel->VirtualAddress );
3787 sym = (COFF_symbol*)
3788 myindex ( sizeof_COFF_symbol, symtab, rel->SymbolTableIndex );
3789 /* Hmm..mysterious looking offset - what's it for? SOF */
3790 printName ( sym->Name, strtab -10 );
3791 debugBelch("'\n" );
3792 }
3793
3794 debugBelch("\n" );
3795 }
3796 debugBelch("\n" );
3797 debugBelch("string table has size 0x%x\n", * (UInt32*)strtab );
3798 debugBelch("---START of string table---\n");
3799 for (i = 4; i < *(Int32*)strtab; i++) {
3800 if (strtab[i] == 0)
3801 debugBelch("\n"); else
3802 debugBelch("%c", strtab[i] );
3803 }
3804 debugBelch("--- END of string table---\n");
3805
3806 debugBelch("\n" );
3807 i = 0;
3808 while (1) {
3809 COFF_symbol* symtab_i;
3810 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
3811 symtab_i = (COFF_symbol*)
3812 myindex ( sizeof_COFF_symbol, symtab, i );
3813 debugBelch(
3814 "symbol %d\n"
3815 " name `",
3816 i
3817 );
3818 printName ( symtab_i->Name, strtab );
3819 debugBelch(
3820 "'\n"
3821 " value 0x%x\n"
3822 " 1+sec# %d\n"
3823 " type 0x%x\n"
3824 " sclass 0x%x\n"
3825 " nAux %d\n",
3826 symtab_i->Value,
3827 (Int32)(symtab_i->SectionNumber),
3828 (UInt32)symtab_i->Type,
3829 (UInt32)symtab_i->StorageClass,
3830 (UInt32)symtab_i->NumberOfAuxSymbols
3831 );
3832 i += symtab_i->NumberOfAuxSymbols;
3833 i++;
3834 }
3835
3836 debugBelch("\n" );
3837 return 1;
3838 }
3839
3840
3841 static int
3842 ocGetNames_PEi386 ( ObjectCode* oc )
3843 {
3844 COFF_header* hdr;
3845 COFF_section* sectab;
3846 COFF_symbol* symtab;
3847 UChar* strtab;
3848
3849 UChar* sname;
3850 void* addr;
3851 int i;
3852
3853 hdr = (COFF_header*)(oc->image);
3854 sectab = (COFF_section*) (
3855 ((UChar*)(oc->image))
3856 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3857 );
3858 symtab = (COFF_symbol*) (
3859 ((UChar*)(oc->image))
3860 + hdr->PointerToSymbolTable
3861 );
3862 strtab = ((UChar*)(oc->image))
3863 + hdr->PointerToSymbolTable
3864 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3865
3866 /* Allocate space for any (local, anonymous) .bss sections. */
3867
3868 for (i = 0; i < hdr->NumberOfSections; i++) {
3869 UInt32 bss_sz;
3870 UChar* zspace;
3871 COFF_section* sectab_i
3872 = (COFF_section*)
3873 myindex ( sizeof_COFF_section, sectab, i );
3874
3875 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3876
3877 if (0 != strcmp(secname, ".bss")) {
3878 stgFree(secname);
3879 continue;
3880 }
3881
3882 stgFree(secname);
3883
3884 /* sof 10/05: the PE spec text isn't too clear regarding what
3885 * the SizeOfRawData field is supposed to hold for object
3886 * file sections containing just uninitialized data -- for executables,
3887 * it is supposed to be zero; unclear what it's supposed to be
3888 * for object files. However, VirtualSize is guaranteed to be
3889 * zero for object files, which definitely suggests that SizeOfRawData
3890 * will be non-zero (where else would the size of this .bss section be
3891 * stored?) Looking at the COFF_section info for incoming object files,
3892 * this certainly appears to be the case.
3893 *
3894 * => I suspect we've been incorrectly handling .bss sections in (relocatable)
3895 * object files up until now. This turned out to bite us with ghc-6.4.1's use
3896 * of gcc-3.4.x, which has started to emit initially-zeroed-out local 'static'
3897 * variable decls into the .bss section. (The specific function in Q which
3898 * triggered this is libraries/base/cbits/dirUtils.c:__hscore_getFolderPath())
3899 */
3900 if (sectab_i->VirtualSize == 0 && sectab_i->SizeOfRawData == 0) continue;
3901 /* This is a non-empty .bss section. Allocate zeroed space for
3902 it, and set its PointerToRawData field such that oc->image +
3903 PointerToRawData == addr_of_zeroed_space. */
3904 bss_sz = sectab_i->VirtualSize;
3905 if ( bss_sz < sectab_i->SizeOfRawData) { bss_sz = sectab_i->SizeOfRawData; }
3906 zspace = stgCallocBytes(1, bss_sz, "ocGetNames_PEi386(anonymous bss)");
3907 sectab_i->PointerToRawData = ((UChar*)zspace) - ((UChar*)(oc->image));
3908 addProddableBlock(oc, zspace, bss_sz);
3909 /* debugBelch("BSS anon section at 0x%x\n", zspace); */
3910 }
3911
3912 /* Copy section information into the ObjectCode. */
3913
3914 for (i = 0; i < hdr->NumberOfSections; i++) {
3915 UChar* start;
3916 UChar* end;
3917 UInt32 sz;
3918
3919 SectionKind kind
3920 = SECTIONKIND_OTHER;
3921 COFF_section* sectab_i
3922 = (COFF_section*)
3923 myindex ( sizeof_COFF_section, sectab, i );
3924
3925 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3926
3927 IF_DEBUG(linker, debugBelch("section name = %s\n", secname ));
3928
3929 # if 0
3930 /* I'm sure this is the Right Way to do it. However, the
3931 alternative of testing the sectab_i->Name field seems to
3932 work ok with Cygwin.
3933
3934 EZY: We should strongly consider using this style, because
3935 it lets us pick up sections that should be added (e.g.
3936 for a while the linker did not work due to missing .eh_frame
3937 in this section.)
3938 */
3939 if (sectab_i->Characteristics & MYIMAGE_SCN_CNT_CODE ||
3940 sectab_i->Characteristics & MYIMAGE_SCN_CNT_INITIALIZED_DATA)
3941 kind = SECTIONKIND_CODE_OR_RODATA;
3942 # endif
3943
3944 if (0==strcmp(".text",(char*)secname) ||
3945 0==strcmp(".text.startup",(char*)secname) ||
3946 0==strcmp(".rdata",(char*)secname)||
3947 0==strcmp(".eh_frame", (char*)secname)||
3948 0==strcmp(".rodata",(char*)secname))
3949 kind = SECTIONKIND_CODE_OR_RODATA;
3950 if (0==strcmp(".data",(char*)secname) ||
3951 0==strcmp(".bss",(char*)secname))
3952 kind = SECTIONKIND_RWDATA;
3953 if (0==strcmp(".ctors", (char*)secname))
3954 kind = SECTIONKIND_INIT_ARRAY;
3955
3956 ASSERT(sectab_i->SizeOfRawData == 0 || sectab_i->VirtualSize == 0);
3957 sz = sectab_i->SizeOfRawData;
3958 if (sz < sectab_i->VirtualSize) sz = sectab_i->VirtualSize;
3959
3960 start = ((UChar*)(oc->image)) + sectab_i->PointerToRawData;
3961 end = start + sz - 1;
3962
3963 if (kind == SECTIONKIND_OTHER
3964 /* Ignore sections called which contain stabs debugging
3965 information. */
3966 && 0 != strcmp(".stab", (char*)secname)
3967 && 0 != strcmp(".stabstr", (char*)secname)
3968 /* Ignore sections called which contain exception information. */
3969 && 0 != strcmp(".pdata", (char*)secname)
3970 && 0 != strcmp(".xdata", (char*)secname)
3971 /* ignore section generated from .ident */
3972 && 0!= strncmp(".debug", (char*)secname, 6)
3973 /* ignore unknown section that appeared in gcc 3.4.5(?) */
3974 && 0!= strcmp(".reloc", (char*)secname)
3975 && 0 != strcmp(".rdata$zzz", (char*)secname)
3976 /* ignore linker directive sections */
3977 && 0 != strcmp(".drectve", (char*)secname)
3978 ) {
3979 errorBelch("Unknown PEi386 section name `%s' (while processing: %" PATH_FMT")", secname, oc->fileName);
3980 stgFree(secname);
3981 return 0;
3982 }
3983
3984 if (kind != SECTIONKIND_OTHER && end >= start) {
3985 if ((((size_t)(start)) % sizeof(void *)) != 0) {
3986 barf("Misaligned section: %p", start);
3987 }
3988
3989 addSection(oc, kind, start, end);
3990 addProddableBlock(oc, start, end - start + 1);
3991 }
3992
3993 stgFree(secname);
3994 }
3995
3996 /* Copy exported symbols into the ObjectCode. */
3997
3998 oc->n_symbols = hdr->NumberOfSymbols;
3999 oc->symbols = stgMallocBytes(oc->n_symbols * sizeof(char*),
4000 "ocGetNames_PEi386(oc->symbols)");
4001 /* Call me paranoid; I don't care. */
4002 for (i = 0; i < oc->n_symbols; i++)
4003 oc->symbols[i] = NULL;
4004
4005 i = 0;
4006 while (1) {
4007 COFF_symbol* symtab_i;
4008 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
4009 symtab_i = (COFF_symbol*)
4010 myindex ( sizeof_COFF_symbol, symtab, i );
4011
4012 addr = NULL;
4013
4014 if (symtab_i->StorageClass == MYIMAGE_SYM_CLASS_EXTERNAL
4015 && symtab_i->SectionNumber != MYIMAGE_SYM_UNDEFINED) {
4016 /* This symbol is global and defined, viz, exported */
4017 /* for MYIMAGE_SYMCLASS_EXTERNAL
4018 && !MYIMAGE_SYM_UNDEFINED,
4019 the address of the symbol is:
4020 address of relevant section + offset in section
4021 */