Add rts_isDynamic to the linker symbol list
[ghc.git] / rts / Linker.c
1 /* -----------------------------------------------------------------------------
2 *
3 * (c) The GHC Team, 2000-2012
4 *
5 * RTS Object Linker
6 *
7 * ---------------------------------------------------------------------------*/
8
9 #if 0
10 #include "PosixSource.h"
11 #endif
12
13 /* Linux needs _GNU_SOURCE to get RTLD_DEFAULT from <dlfcn.h> and
14 MREMAP_MAYMOVE from <sys/mman.h>.
15 */
16 #if defined(__linux__) || defined(__GLIBC__)
17 #define _GNU_SOURCE 1
18 #endif
19
20 #include "Rts.h"
21 #include "HsFFI.h"
22
23 #include "sm/Storage.h"
24 #include "Stats.h"
25 #include "Hash.h"
26 #include "LinkerInternals.h"
27 #include "RtsUtils.h"
28 #include "Trace.h"
29 #include "StgPrimFloat.h" // for __int_encodeFloat etc.
30 #include "Stable.h"
31 #include "Proftimer.h"
32 #include "GetEnv.h"
33
34 #if !defined(mingw32_HOST_OS)
35 #include "posix/Signals.h"
36 #endif
37
38 // get protos for is*()
39 #include <ctype.h>
40
41 #ifdef HAVE_SYS_TYPES_H
42 #include <sys/types.h>
43 #endif
44
45 #include <inttypes.h>
46 #include <stdlib.h>
47 #include <string.h>
48 #include <stdio.h>
49 #include <assert.h>
50
51 #ifdef HAVE_SYS_STAT_H
52 #include <sys/stat.h>
53 #endif
54
55 #if defined(HAVE_DLFCN_H)
56 #include <dlfcn.h>
57 #endif
58
59 #if defined(cygwin32_HOST_OS)
60 #ifdef HAVE_DIRENT_H
61 #include <dirent.h>
62 #endif
63
64 #ifdef HAVE_SYS_TIME_H
65 #include <sys/time.h>
66 #endif
67 #include <regex.h>
68 #include <sys/fcntl.h>
69 #include <sys/termios.h>
70 #include <sys/utime.h>
71 #include <sys/utsname.h>
72 #include <sys/wait.h>
73 #endif
74
75 #if (defined(powerpc_HOST_ARCH) && defined(linux_HOST_OS)) \
76 || (!defined(powerpc_HOST_ARCH) && \
77 ( defined(linux_HOST_OS) || defined(freebsd_HOST_OS) || \
78 defined(dragonfly_HOST_OS) || defined(netbsd_HOST_OS ) || \
79 defined(openbsd_HOST_OS ) || defined(darwin_HOST_OS ) || \
80 defined(kfreebsdgnu_HOST_OS) || defined(gnu_HOST_OS)))
81 /* Don't use mmap on powerpc_HOST_ARCH as mmap doesn't support
82 * reallocating but we need to allocate jump islands just after each
83 * object images. Otherwise relative branches to jump islands can fail
84 * due to 24-bits displacement overflow.
85 */
86 #define USE_MMAP
87 #include <fcntl.h>
88 #include <sys/mman.h>
89
90 #ifdef HAVE_UNISTD_H
91 #include <unistd.h>
92 #endif
93
94 #endif
95
96
97 /* PowerPC has relative branch instructions with only 24 bit displacements
98 * and therefore needs jump islands contiguous with each object code module.
99 */
100 #if (defined(USE_MMAP) && defined(powerpc_HOST_ARCH) && defined(linux_HOST_OS))
101 #define USE_CONTIGUOUS_MMAP 1
102 #else
103 #define USE_CONTIGUOUS_MMAP 0
104 #endif
105
106 #if defined(linux_HOST_OS) || defined(solaris2_HOST_OS) || defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS) || defined(netbsd_HOST_OS) || defined(openbsd_HOST_OS) || defined(gnu_HOST_OS)
107 # define OBJFORMAT_ELF
108 # include <regex.h> // regex is already used by dlopen() so this is OK
109 // to use here without requiring an additional lib
110 #elif defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
111 # define OBJFORMAT_PEi386
112 # include <windows.h>
113 # include <math.h>
114 #elif defined(darwin_HOST_OS)
115 # define OBJFORMAT_MACHO
116 # include <regex.h>
117 # include <mach/machine.h>
118 # include <mach-o/fat.h>
119 # include <mach-o/loader.h>
120 # include <mach-o/nlist.h>
121 # include <mach-o/reloc.h>
122 #if !defined(HAVE_DLFCN_H)
123 # include <mach-o/dyld.h>
124 #endif
125 #if defined(powerpc_HOST_ARCH)
126 # include <mach-o/ppc/reloc.h>
127 #endif
128 #if defined(x86_64_HOST_ARCH)
129 # include <mach-o/x86_64/reloc.h>
130 #endif
131 #endif
132
133 #if defined(x86_64_HOST_ARCH) && defined(darwin_HOST_OS)
134 #define ALWAYS_PIC
135 #endif
136
137 #if defined(dragonfly_HOST_OS)
138 #include <sys/tls.h>
139 #endif
140
141 /* Hash table mapping symbol names to Symbol */
142 static /*Str*/HashTable *symhash;
143
144 /* Hash table mapping symbol names to StgStablePtr */
145 static /*Str*/HashTable *stablehash;
146
147 /* List of currently loaded objects */
148 ObjectCode *objects = NULL; /* initially empty */
149
150 /* List of objects that have been unloaded via unloadObj(), but are waiting
151 to be actually freed via checkUnload() */
152 ObjectCode *unloaded_objects = NULL; /* initially empty */
153
154 /* Type of the initializer */
155 typedef void (*init_t) (int argc, char **argv, char **env);
156
157 static HsInt loadOc( ObjectCode* oc );
158 static ObjectCode* mkOc( pathchar *path, char *image, int imageSize,
159 char *archiveMemberName
160 #ifndef USE_MMAP
161 #ifdef darwin_HOST_OS
162 , int misalignment
163 #endif
164 #endif
165 );
166
167 // Use wchar_t for pathnames on Windows (#5697)
168 #if defined(mingw32_HOST_OS)
169 #define pathcmp wcscmp
170 #define pathlen wcslen
171 #define pathopen _wfopen
172 #define pathstat _wstat
173 #define struct_stat struct _stat
174 #define open wopen
175 #define WSTR(s) L##s
176 #else
177 #define pathcmp strcmp
178 #define pathlen strlen
179 #define pathopen fopen
180 #define pathstat stat
181 #define struct_stat struct stat
182 #define WSTR(s) s
183 #endif
184
185 static pathchar* pathdup(pathchar *path)
186 {
187 pathchar *ret;
188 #if defined(mingw32_HOST_OS)
189 ret = wcsdup(path);
190 #else
191 /* sigh, strdup() isn't a POSIX function, so do it the long way */
192 ret = stgMallocBytes( strlen(path)+1, "loadObj" );
193 strcpy(ret, path);
194 #endif
195 return ret;
196 }
197
198
199 #if defined(OBJFORMAT_ELF)
200 static int ocVerifyImage_ELF ( ObjectCode* oc );
201 static int ocGetNames_ELF ( ObjectCode* oc );
202 static int ocResolve_ELF ( ObjectCode* oc );
203 static int ocRunInit_ELF ( ObjectCode* oc );
204 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
205 static int ocAllocateSymbolExtras_ELF ( ObjectCode* oc );
206 #endif
207 #elif defined(OBJFORMAT_PEi386)
208 static int ocVerifyImage_PEi386 ( ObjectCode* oc );
209 static int ocGetNames_PEi386 ( ObjectCode* oc );
210 static int ocResolve_PEi386 ( ObjectCode* oc );
211 static int ocRunInit_PEi386 ( ObjectCode* oc );
212 static void *lookupSymbolInDLLs ( unsigned char *lbl );
213 static void zapTrailingAtSign ( unsigned char *sym );
214 #elif defined(OBJFORMAT_MACHO)
215 static int ocVerifyImage_MachO ( ObjectCode* oc );
216 static int ocGetNames_MachO ( ObjectCode* oc );
217 static int ocResolve_MachO ( ObjectCode* oc );
218 static int ocRunInit_MachO ( ObjectCode* oc );
219
220 #ifndef USE_MMAP
221 static int machoGetMisalignment( FILE * );
222 #endif
223 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
224 static int ocAllocateSymbolExtras_MachO ( ObjectCode* oc );
225 #endif
226 #ifdef powerpc_HOST_ARCH
227 static void machoInitSymbolsWithoutUnderscore( void );
228 #endif
229 #endif
230
231 static void freeProddableBlocks (ObjectCode *oc);
232
233 /* on x86_64 we have a problem with relocating symbol references in
234 * code that was compiled without -fPIC. By default, the small memory
235 * model is used, which assumes that symbol references can fit in a
236 * 32-bit slot. The system dynamic linker makes this work for
237 * references to shared libraries by either (a) allocating a jump
238 * table slot for code references, or (b) moving the symbol at load
239 * time (and copying its contents, if necessary) for data references.
240 *
241 * We unfortunately can't tell whether symbol references are to code
242 * or data. So for now we assume they are code (the vast majority
243 * are), and allocate jump-table slots. Unfortunately this will
244 * SILENTLY generate crashing code for data references. This hack is
245 * enabled by X86_64_ELF_NONPIC_HACK.
246 *
247 * One workaround is to use shared Haskell libraries. This is
248 * coming. Another workaround is to keep the static libraries but
249 * compile them with -fPIC, because that will generate PIC references
250 * to data which can be relocated. The PIC code is still too green to
251 * do this systematically, though.
252 *
253 * See bug #781
254 * See thread http://www.haskell.org/pipermail/cvs-ghc/2007-September/038458.html
255 *
256 * Naming Scheme for Symbol Macros
257 *
258 * SymI_*: symbol is internal to the RTS. It resides in an object
259 * file/library that is statically.
260 * SymE_*: symbol is external to the RTS library. It might be linked
261 * dynamically.
262 *
263 * Sym*_HasProto : the symbol prototype is imported in an include file
264 * or defined explicitly
265 * Sym*_NeedsProto: the symbol is undefined and we add a dummy
266 * default proto extern void sym(void);
267 */
268 #define X86_64_ELF_NONPIC_HACK 1
269
270 /* Link objects into the lower 2Gb on x86_64. GHC assumes the
271 * small memory model on this architecture (see gcc docs,
272 * -mcmodel=small).
273 *
274 * MAP_32BIT not available on OpenBSD/amd64
275 */
276 #if defined(x86_64_HOST_ARCH) && defined(MAP_32BIT)
277 #define TRY_MAP_32BIT MAP_32BIT
278 #else
279 #define TRY_MAP_32BIT 0
280 #endif
281
282 /*
283 * Due to the small memory model (see above), on x86_64 we have to map
284 * all our non-PIC object files into the low 2Gb of the address space
285 * (why 2Gb and not 4Gb? Because all addresses must be reachable
286 * using a 32-bit signed PC-relative offset). On Linux we can do this
287 * using the MAP_32BIT flag to mmap(), however on other OSs
288 * (e.g. *BSD, see #2063, and also on Linux inside Xen, see #2512), we
289 * can't do this. So on these systems, we have to pick a base address
290 * in the low 2Gb of the address space and try to allocate memory from
291 * there.
292 *
293 * We pick a default address based on the OS, but also make this
294 * configurable via an RTS flag (+RTS -xm)
295 */
296 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
297
298 #if defined(MAP_32BIT)
299 // Try to use MAP_32BIT
300 #define MMAP_32BIT_BASE_DEFAULT 0
301 #else
302 // A guess: 1Gb.
303 #define MMAP_32BIT_BASE_DEFAULT 0x40000000
304 #endif
305
306 static void *mmap_32bit_base = (void *)MMAP_32BIT_BASE_DEFAULT;
307 #endif
308
309 /* MAP_ANONYMOUS is MAP_ANON on some systems, e.g. OpenBSD */
310 #if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
311 #define MAP_ANONYMOUS MAP_ANON
312 #endif
313
314 /* -----------------------------------------------------------------------------
315 * Built-in symbols from the RTS
316 */
317
318 typedef struct _RtsSymbolVal {
319 char *lbl;
320 void *addr;
321 } RtsSymbolVal;
322
323 #define Maybe_Stable_Names SymI_HasProto(stg_mkWeakzh) \
324 SymI_HasProto(stg_mkWeakNoFinalizzerzh) \
325 SymI_HasProto(stg_addCFinalizzerToWeakzh) \
326 SymI_HasProto(stg_makeStableNamezh) \
327 SymI_HasProto(stg_finalizzeWeakzh)
328
329 #if !defined (mingw32_HOST_OS)
330 #define RTS_POSIX_ONLY_SYMBOLS \
331 SymI_HasProto(__hscore_get_saved_termios) \
332 SymI_HasProto(__hscore_set_saved_termios) \
333 SymI_HasProto(shutdownHaskellAndSignal) \
334 SymI_HasProto(signal_handlers) \
335 SymI_HasProto(stg_sig_install) \
336 SymI_HasProto(rtsTimerSignal) \
337 SymI_HasProto(atexit) \
338 SymI_NeedsProto(nocldstop)
339 #endif
340
341 #if defined (cygwin32_HOST_OS)
342 #define RTS_MINGW_ONLY_SYMBOLS /**/
343 /* Don't have the ability to read import libs / archives, so
344 * we have to stupidly list a lot of what libcygwin.a
345 * exports; sigh.
346 */
347 #define RTS_CYGWIN_ONLY_SYMBOLS \
348 SymI_HasProto(regfree) \
349 SymI_HasProto(regexec) \
350 SymI_HasProto(regerror) \
351 SymI_HasProto(regcomp) \
352 SymI_HasProto(__errno) \
353 SymI_HasProto(access) \
354 SymI_HasProto(chmod) \
355 SymI_HasProto(chdir) \
356 SymI_HasProto(close) \
357 SymI_HasProto(creat) \
358 SymI_HasProto(dup) \
359 SymI_HasProto(dup2) \
360 SymI_HasProto(fstat) \
361 SymI_HasProto(fcntl) \
362 SymI_HasProto(getcwd) \
363 SymI_HasProto(getenv) \
364 SymI_HasProto(lseek) \
365 SymI_HasProto(open) \
366 SymI_HasProto(fpathconf) \
367 SymI_HasProto(pathconf) \
368 SymI_HasProto(stat) \
369 SymI_HasProto(pow) \
370 SymI_HasProto(tanh) \
371 SymI_HasProto(cosh) \
372 SymI_HasProto(sinh) \
373 SymI_HasProto(atan) \
374 SymI_HasProto(acos) \
375 SymI_HasProto(asin) \
376 SymI_HasProto(tan) \
377 SymI_HasProto(cos) \
378 SymI_HasProto(sin) \
379 SymI_HasProto(exp) \
380 SymI_HasProto(log) \
381 SymI_HasProto(sqrt) \
382 SymI_HasProto(localtime_r) \
383 SymI_HasProto(gmtime_r) \
384 SymI_HasProto(mktime) \
385 SymI_NeedsProto(_imp___tzname) \
386 SymI_HasProto(gettimeofday) \
387 SymI_HasProto(timezone) \
388 SymI_HasProto(tcgetattr) \
389 SymI_HasProto(tcsetattr) \
390 SymI_HasProto(memcpy) \
391 SymI_HasProto(memmove) \
392 SymI_HasProto(realloc) \
393 SymI_HasProto(malloc) \
394 SymI_HasProto(free) \
395 SymI_HasProto(fork) \
396 SymI_HasProto(lstat) \
397 SymI_HasProto(isatty) \
398 SymI_HasProto(mkdir) \
399 SymI_HasProto(opendir) \
400 SymI_HasProto(readdir) \
401 SymI_HasProto(rewinddir) \
402 SymI_HasProto(closedir) \
403 SymI_HasProto(link) \
404 SymI_HasProto(mkfifo) \
405 SymI_HasProto(pipe) \
406 SymI_HasProto(read) \
407 SymI_HasProto(rename) \
408 SymI_HasProto(rmdir) \
409 SymI_HasProto(select) \
410 SymI_HasProto(system) \
411 SymI_HasProto(write) \
412 SymI_HasProto(strcmp) \
413 SymI_HasProto(strcpy) \
414 SymI_HasProto(strncpy) \
415 SymI_HasProto(strerror) \
416 SymI_HasProto(sigaddset) \
417 SymI_HasProto(sigemptyset) \
418 SymI_HasProto(sigprocmask) \
419 SymI_HasProto(umask) \
420 SymI_HasProto(uname) \
421 SymI_HasProto(unlink) \
422 SymI_HasProto(utime) \
423 SymI_HasProto(waitpid)
424
425 #elif defined(mingw32_HOST_OS)
426 #define RTS_POSIX_ONLY_SYMBOLS /**/
427 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
428
429 #if HAVE_GETTIMEOFDAY
430 #define RTS_MINGW_GETTIMEOFDAY_SYM SymI_NeedsProto(gettimeofday)
431 #else
432 #define RTS_MINGW_GETTIMEOFDAY_SYM /**/
433 #endif
434
435 #if HAVE___MINGW_VFPRINTF
436 #define RTS___MINGW_VFPRINTF_SYM SymI_HasProto(__mingw_vfprintf)
437 #else
438 #define RTS___MINGW_VFPRINTF_SYM /**/
439 #endif
440
441 #if defined(i386_HOST_ARCH)
442 #define RTS_WIN32_ONLY(X) X
443 #else
444 #define RTS_WIN32_ONLY(X) /**/
445 #endif
446
447 #if defined(x86_64_HOST_ARCH)
448 #define RTS_WIN64_ONLY(X) X
449 #else
450 #define RTS_WIN64_ONLY(X) /**/
451 #endif
452
453 /* These are statically linked from the mingw libraries into the ghc
454 executable, so we have to employ this hack. */
455 #define RTS_MINGW_ONLY_SYMBOLS \
456 SymI_HasProto(stg_asyncReadzh) \
457 SymI_HasProto(stg_asyncWritezh) \
458 SymI_HasProto(stg_asyncDoProczh) \
459 SymI_HasProto(getWin32ProgArgv) \
460 SymI_HasProto(setWin32ProgArgv) \
461 SymI_HasProto(memset) \
462 SymI_HasProto(inet_ntoa) \
463 SymI_HasProto(inet_addr) \
464 SymI_HasProto(htonl) \
465 SymI_HasProto(recvfrom) \
466 SymI_HasProto(listen) \
467 SymI_HasProto(bind) \
468 SymI_HasProto(shutdown) \
469 SymI_HasProto(connect) \
470 SymI_HasProto(htons) \
471 SymI_HasProto(ntohs) \
472 SymI_HasProto(getservbyname) \
473 SymI_HasProto(getservbyport) \
474 SymI_HasProto(getprotobynumber) \
475 SymI_HasProto(getprotobyname) \
476 SymI_HasProto(gethostbyname) \
477 SymI_HasProto(gethostbyaddr) \
478 SymI_HasProto(gethostname) \
479 SymI_HasProto(strcpy) \
480 SymI_HasProto(strncpy) \
481 SymI_HasProto(abort) \
482 RTS_WIN32_ONLY(SymI_NeedsProto(_alloca)) \
483 SymI_HasProto(isxdigit) \
484 SymI_HasProto(isupper) \
485 SymI_HasProto(ispunct) \
486 SymI_HasProto(islower) \
487 SymI_HasProto(isspace) \
488 SymI_HasProto(isprint) \
489 SymI_HasProto(isdigit) \
490 SymI_HasProto(iscntrl) \
491 SymI_HasProto(isalpha) \
492 SymI_HasProto(isalnum) \
493 SymI_HasProto(isascii) \
494 RTS___MINGW_VFPRINTF_SYM \
495 SymI_HasProto(strcmp) \
496 SymI_HasProto(memmove) \
497 SymI_HasProto(realloc) \
498 SymI_HasProto(malloc) \
499 SymI_HasProto(pow) \
500 SymI_HasProto(tanh) \
501 SymI_HasProto(cosh) \
502 SymI_HasProto(sinh) \
503 SymI_HasProto(atan) \
504 SymI_HasProto(acos) \
505 SymI_HasProto(asin) \
506 SymI_HasProto(tan) \
507 SymI_HasProto(cos) \
508 SymI_HasProto(sin) \
509 SymI_HasProto(exp) \
510 SymI_HasProto(log) \
511 SymI_HasProto(sqrt) \
512 SymI_HasProto(powf) \
513 SymI_HasProto(tanhf) \
514 SymI_HasProto(coshf) \
515 SymI_HasProto(sinhf) \
516 SymI_HasProto(atanf) \
517 SymI_HasProto(acosf) \
518 SymI_HasProto(asinf) \
519 SymI_HasProto(tanf) \
520 SymI_HasProto(cosf) \
521 SymI_HasProto(sinf) \
522 SymI_HasProto(expf) \
523 SymI_HasProto(logf) \
524 SymI_HasProto(sqrtf) \
525 SymI_HasProto(erf) \
526 SymI_HasProto(erfc) \
527 SymI_HasProto(erff) \
528 SymI_HasProto(erfcf) \
529 SymI_HasProto(memcpy) \
530 SymI_HasProto(rts_InstallConsoleEvent) \
531 SymI_HasProto(rts_ConsoleHandlerDone) \
532 SymI_NeedsProto(mktime) \
533 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___timezone)) \
534 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___tzname)) \
535 RTS_WIN32_ONLY(SymI_NeedsProto(_imp__tzname)) \
536 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___iob)) \
537 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___osver)) \
538 SymI_NeedsProto(localtime) \
539 SymI_NeedsProto(gmtime) \
540 SymI_NeedsProto(opendir) \
541 SymI_NeedsProto(readdir) \
542 SymI_NeedsProto(rewinddir) \
543 RTS_WIN32_ONLY(SymI_NeedsProto(_imp____mb_cur_max)) \
544 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___pctype)) \
545 RTS_WIN32_ONLY(SymI_NeedsProto(__chkstk)) \
546 RTS_WIN64_ONLY(SymI_NeedsProto(__imp___iob_func)) \
547 RTS_WIN64_ONLY(SymI_NeedsProto(___chkstk_ms)) \
548 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_localeconv)) \
549 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_islower)) \
550 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isspace)) \
551 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isxdigit)) \
552 RTS_WIN64_ONLY(SymI_HasProto(close)) \
553 RTS_WIN64_ONLY(SymI_HasProto(read)) \
554 RTS_WIN64_ONLY(SymI_HasProto(dup)) \
555 RTS_WIN64_ONLY(SymI_HasProto(dup2)) \
556 RTS_WIN64_ONLY(SymI_HasProto(write)) \
557 SymI_NeedsProto(getpid) \
558 RTS_WIN64_ONLY(SymI_HasProto(access)) \
559 SymI_HasProto(chmod) \
560 RTS_WIN64_ONLY(SymI_HasProto(creat)) \
561 RTS_WIN64_ONLY(SymI_HasProto(umask)) \
562 SymI_HasProto(unlink) \
563 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__errno)) \
564 RTS_WIN64_ONLY(SymI_NeedsProto(ftruncate64)) \
565 RTS_WIN64_ONLY(SymI_HasProto(setmode)) \
566 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wstat64)) \
567 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__fstat64)) \
568 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wsopen)) \
569 RTS_WIN64_ONLY(SymI_HasProto(__imp__environ)) \
570 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileAttributesA)) \
571 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileInformationByHandle)) \
572 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileType)) \
573 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetLastError)) \
574 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceFrequency)) \
575 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceCounter)) \
576 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetTickCount)) \
577 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WaitForSingleObject)) \
578 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekConsoleInputA)) \
579 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ReadConsoleInputA)) \
580 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekNamedPipe)) \
581 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__isatty)) \
582 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_select)) \
583 RTS_WIN64_ONLY(SymI_HasProto(isatty)) \
584 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__get_osfhandle)) \
585 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetConsoleMode)) \
586 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetConsoleMode)) \
587 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FlushConsoleInputBuffer)) \
588 RTS_WIN64_ONLY(SymI_HasProto(free)) \
589 RTS_WIN64_ONLY(SymI_NeedsProto(raise)) \
590 RTS_WIN64_ONLY(SymI_NeedsProto(_getpid)) \
591 RTS_WIN64_ONLY(SymI_HasProto(getc)) \
592 RTS_WIN64_ONLY(SymI_HasProto(ungetc)) \
593 RTS_WIN64_ONLY(SymI_HasProto(puts)) \
594 RTS_WIN64_ONLY(SymI_HasProto(putc)) \
595 RTS_WIN64_ONLY(SymI_HasProto(putchar)) \
596 RTS_WIN64_ONLY(SymI_HasProto(fputc)) \
597 RTS_WIN64_ONLY(SymI_HasProto(fread)) \
598 RTS_WIN64_ONLY(SymI_HasProto(fwrite)) \
599 RTS_WIN64_ONLY(SymI_HasProto(ferror)) \
600 RTS_WIN64_ONLY(SymI_HasProto(printf)) \
601 RTS_WIN64_ONLY(SymI_HasProto(fprintf)) \
602 RTS_WIN64_ONLY(SymI_HasProto(sprintf)) \
603 RTS_WIN64_ONLY(SymI_HasProto(vsprintf)) \
604 RTS_WIN64_ONLY(SymI_HasProto(sscanf)) \
605 RTS_WIN64_ONLY(SymI_HasProto(ldexp)) \
606 RTS_WIN64_ONLY(SymI_HasProto(strlen)) \
607 RTS_WIN64_ONLY(SymI_HasProto(strnlen)) \
608 RTS_WIN64_ONLY(SymI_HasProto(strchr)) \
609 RTS_WIN64_ONLY(SymI_HasProto(strtol)) \
610 RTS_WIN64_ONLY(SymI_HasProto(strerror)) \
611 RTS_WIN64_ONLY(SymI_HasProto(memchr)) \
612 RTS_WIN64_ONLY(SymI_HasProto(memcmp)) \
613 RTS_WIN64_ONLY(SymI_HasProto(wcscpy)) \
614 RTS_WIN64_ONLY(SymI_HasProto(wcslen)) \
615 RTS_WIN64_ONLY(SymI_HasProto(_lseeki64)) \
616 RTS_WIN64_ONLY(SymI_HasProto(_wchmod)) \
617 RTS_WIN64_ONLY(SymI_HasProto(closesocket)) \
618 RTS_WIN64_ONLY(SymI_HasProto(send)) \
619 RTS_WIN64_ONLY(SymI_HasProto(recv)) \
620 RTS_WIN64_ONLY(SymI_HasProto(bsearch)) \
621 RTS_WIN64_ONLY(SymI_HasProto(CommandLineToArgvW)) \
622 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmap)) \
623 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmapIndirect)) \
624 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleBitmap)) \
625 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBPatternBrushPt)) \
626 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBitmap)) \
627 RTS_WIN64_ONLY(SymI_HasProto(SetBitmapDimensionEx)) \
628 RTS_WIN64_ONLY(SymI_HasProto(GetBitmapDimensionEx)) \
629 RTS_WIN64_ONLY(SymI_HasProto(GetStockObject)) \
630 RTS_WIN64_ONLY(SymI_HasProto(GetObjectW)) \
631 RTS_WIN64_ONLY(SymI_HasProto(DeleteObject)) \
632 RTS_WIN64_ONLY(SymI_HasProto(SetDIBits)) \
633 RTS_WIN64_ONLY(SymI_HasProto(GetDIBits)) \
634 RTS_WIN64_ONLY(SymI_HasProto(CreateSolidBrush)) \
635 RTS_WIN64_ONLY(SymI_HasProto(CreateHatchBrush)) \
636 RTS_WIN64_ONLY(SymI_HasProto(CreatePatternBrush)) \
637 RTS_WIN64_ONLY(SymI_HasProto(CreateFontW)) \
638 RTS_WIN64_ONLY(SymI_HasProto(AngleArc)) \
639 RTS_WIN64_ONLY(SymI_HasProto(Arc)) \
640 RTS_WIN64_ONLY(SymI_HasProto(ArcTo)) \
641 RTS_WIN64_ONLY(SymI_HasProto(BeginPath)) \
642 RTS_WIN64_ONLY(SymI_HasProto(BitBlt)) \
643 RTS_WIN64_ONLY(SymI_HasProto(CancelDC)) \
644 RTS_WIN64_ONLY(SymI_HasProto(Chord)) \
645 RTS_WIN64_ONLY(SymI_HasProto(CloseFigure)) \
646 RTS_WIN64_ONLY(SymI_HasProto(CombineRgn)) \
647 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleDC)) \
648 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgn)) \
649 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgnIndirect)) \
650 RTS_WIN64_ONLY(SymI_HasProto(CreatePen)) \
651 RTS_WIN64_ONLY(SymI_HasProto(CreatePolygonRgn)) \
652 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgn)) \
653 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgnIndirect)) \
654 RTS_WIN64_ONLY(SymI_HasProto(CreateRoundRectRgn)) \
655 RTS_WIN64_ONLY(SymI_HasProto(DeleteDC)) \
656 RTS_WIN64_ONLY(SymI_HasProto(Ellipse)) \
657 RTS_WIN64_ONLY(SymI_HasProto(EndPath)) \
658 RTS_WIN64_ONLY(SymI_HasProto(EqualRgn)) \
659 RTS_WIN64_ONLY(SymI_HasProto(ExtSelectClipRgn)) \
660 RTS_WIN64_ONLY(SymI_HasProto(FillPath)) \
661 RTS_WIN64_ONLY(SymI_HasProto(FillRgn)) \
662 RTS_WIN64_ONLY(SymI_HasProto(FlattenPath)) \
663 RTS_WIN64_ONLY(SymI_HasProto(FrameRgn)) \
664 RTS_WIN64_ONLY(SymI_HasProto(GetArcDirection)) \
665 RTS_WIN64_ONLY(SymI_HasProto(GetBkColor)) \
666 RTS_WIN64_ONLY(SymI_HasProto(GetBkMode)) \
667 RTS_WIN64_ONLY(SymI_HasProto(GetBrushOrgEx)) \
668 RTS_WIN64_ONLY(SymI_HasProto(GetCurrentObject)) \
669 RTS_WIN64_ONLY(SymI_HasProto(GetDCOrgEx)) \
670 RTS_WIN64_ONLY(SymI_HasProto(GetGraphicsMode)) \
671 RTS_WIN64_ONLY(SymI_HasProto(GetMiterLimit)) \
672 RTS_WIN64_ONLY(SymI_HasProto(GetPolyFillMode)) \
673 RTS_WIN64_ONLY(SymI_HasProto(GetRgnBox)) \
674 RTS_WIN64_ONLY(SymI_HasProto(GetStretchBltMode)) \
675 RTS_WIN64_ONLY(SymI_HasProto(GetTextAlign)) \
676 RTS_WIN64_ONLY(SymI_HasProto(GetTextCharacterExtra)) \
677 RTS_WIN64_ONLY(SymI_HasProto(GetTextColor)) \
678 RTS_WIN64_ONLY(SymI_HasProto(GetTextExtentPoint32W)) \
679 RTS_WIN64_ONLY(SymI_HasProto(InvertRgn)) \
680 RTS_WIN64_ONLY(SymI_HasProto(LineTo)) \
681 RTS_WIN64_ONLY(SymI_HasProto(MaskBlt)) \
682 RTS_WIN64_ONLY(SymI_HasProto(MoveToEx)) \
683 RTS_WIN64_ONLY(SymI_HasProto(OffsetRgn)) \
684 RTS_WIN64_ONLY(SymI_HasProto(PaintRgn)) \
685 RTS_WIN64_ONLY(SymI_HasProto(PathToRegion)) \
686 RTS_WIN64_ONLY(SymI_HasProto(Pie)) \
687 RTS_WIN64_ONLY(SymI_HasProto(PlgBlt)) \
688 RTS_WIN64_ONLY(SymI_HasProto(PolyBezier)) \
689 RTS_WIN64_ONLY(SymI_HasProto(PolyBezierTo)) \
690 RTS_WIN64_ONLY(SymI_HasProto(Polygon)) \
691 RTS_WIN64_ONLY(SymI_HasProto(Polyline)) \
692 RTS_WIN64_ONLY(SymI_HasProto(PolylineTo)) \
693 RTS_WIN64_ONLY(SymI_HasProto(PtInRegion)) \
694 RTS_WIN64_ONLY(SymI_HasProto(Rectangle)) \
695 RTS_WIN64_ONLY(SymI_HasProto(RectInRegion)) \
696 RTS_WIN64_ONLY(SymI_HasProto(RestoreDC)) \
697 RTS_WIN64_ONLY(SymI_HasProto(RoundRect)) \
698 RTS_WIN64_ONLY(SymI_HasProto(SaveDC)) \
699 RTS_WIN64_ONLY(SymI_HasProto(SelectClipPath)) \
700 RTS_WIN64_ONLY(SymI_HasProto(SelectClipRgn)) \
701 RTS_WIN64_ONLY(SymI_HasProto(SelectObject)) \
702 RTS_WIN64_ONLY(SymI_HasProto(SelectPalette)) \
703 RTS_WIN64_ONLY(SymI_HasProto(SetArcDirection)) \
704 RTS_WIN64_ONLY(SymI_HasProto(SetBkColor)) \
705 RTS_WIN64_ONLY(SymI_HasProto(SetBkMode)) \
706 RTS_WIN64_ONLY(SymI_HasProto(SetBrushOrgEx)) \
707 RTS_WIN64_ONLY(SymI_HasProto(SetGraphicsMode)) \
708 RTS_WIN64_ONLY(SymI_HasProto(SetMiterLimit)) \
709 RTS_WIN64_ONLY(SymI_HasProto(SetPolyFillMode)) \
710 RTS_WIN64_ONLY(SymI_HasProto(SetStretchBltMode)) \
711 RTS_WIN64_ONLY(SymI_HasProto(SetTextAlign)) \
712 RTS_WIN64_ONLY(SymI_HasProto(SetTextCharacterExtra)) \
713 RTS_WIN64_ONLY(SymI_HasProto(SetTextColor)) \
714 RTS_WIN64_ONLY(SymI_HasProto(StretchBlt)) \
715 RTS_WIN64_ONLY(SymI_HasProto(StrokeAndFillPath)) \
716 RTS_WIN64_ONLY(SymI_HasProto(StrokePath)) \
717 RTS_WIN64_ONLY(SymI_HasProto(TextOutW)) \
718 RTS_WIN64_ONLY(SymI_HasProto(timeGetTime)) \
719 RTS_WIN64_ONLY(SymI_HasProto(WidenPath)) \
720 RTS_WIN64_ONLY(SymI_HasProto(GetFileSecurityW)) \
721 RTS_WIN64_ONLY(SymI_HasProto(RegCloseKey)) \
722 RTS_WIN64_ONLY(SymI_HasProto(RegConnectRegistryW)) \
723 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyExW)) \
724 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyW)) \
725 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteKeyW)) \
726 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteValueW)) \
727 RTS_WIN64_ONLY(SymI_HasProto(RegEnumKeyW)) \
728 RTS_WIN64_ONLY(SymI_HasProto(RegEnumValueW)) \
729 RTS_WIN64_ONLY(SymI_HasProto(RegFlushKey)) \
730 RTS_WIN64_ONLY(SymI_HasProto(RegLoadKeyW)) \
731 RTS_WIN64_ONLY(SymI_HasProto(RegNotifyChangeKeyValue)) \
732 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyExW)) \
733 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyW)) \
734 RTS_WIN64_ONLY(SymI_HasProto(RegQueryInfoKeyW)) \
735 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueExW)) \
736 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueW)) \
737 RTS_WIN64_ONLY(SymI_HasProto(RegReplaceKeyW)) \
738 RTS_WIN64_ONLY(SymI_HasProto(RegRestoreKeyW)) \
739 RTS_WIN64_ONLY(SymI_HasProto(RegSaveKeyW)) \
740 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueExW)) \
741 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueW)) \
742 RTS_WIN64_ONLY(SymI_HasProto(RegUnLoadKeyW)) \
743 RTS_WIN64_ONLY(SymI_NeedsProto(SHGetFolderPathW)) \
744 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetWindowLongPtrW)) \
745 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetWindowLongPtrW)) \
746 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_MenuItemFromPoint)) \
747 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPoint)) \
748 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPointEx)) \
749 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DeleteObject)) \
750 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_UnmapViewOfFile)) \
751 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CloseHandle)) \
752 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FreeLibrary)) \
753 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetMessageW)) \
754 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TranslateMessage)) \
755 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DispatchMessageW)) \
756 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DefWindowProcW)) \
757 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetDIBits)) \
758 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalAlloc)) \
759 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalFree)) \
760 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateFileW)) \
761 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WriteFile)) \
762 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateCompatibleBitmap)) \
763 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SelectObject)) \
764 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_Polygon)) \
765 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FormatMessageW)) \
766 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__localtime64)) \
767 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__tzname)) \
768 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__timezone)) \
769 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreatePipe)) \
770 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetHandleInformation)) \
771 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetStdHandle)) \
772 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetCurrentProcess)) \
773 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DuplicateHandle)) \
774 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateProcessW)) \
775 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TerminateProcess)) \
776 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__open_osfhandle)) \
777 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetExitCodeProcess)) \
778 RTS_MINGW_GETTIMEOFDAY_SYM \
779 SymI_NeedsProto(closedir)
780
781 #else
782 #define RTS_MINGW_ONLY_SYMBOLS /**/
783 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
784 #endif
785
786
787 #if defined(darwin_HOST_OS) && HAVE_PRINTF_LDBLSTUB
788 #define RTS_DARWIN_ONLY_SYMBOLS \
789 SymI_NeedsProto(asprintf$LDBLStub) \
790 SymI_NeedsProto(err$LDBLStub) \
791 SymI_NeedsProto(errc$LDBLStub) \
792 SymI_NeedsProto(errx$LDBLStub) \
793 SymI_NeedsProto(fprintf$LDBLStub) \
794 SymI_NeedsProto(fscanf$LDBLStub) \
795 SymI_NeedsProto(fwprintf$LDBLStub) \
796 SymI_NeedsProto(fwscanf$LDBLStub) \
797 SymI_NeedsProto(printf$LDBLStub) \
798 SymI_NeedsProto(scanf$LDBLStub) \
799 SymI_NeedsProto(snprintf$LDBLStub) \
800 SymI_NeedsProto(sprintf$LDBLStub) \
801 SymI_NeedsProto(sscanf$LDBLStub) \
802 SymI_NeedsProto(strtold$LDBLStub) \
803 SymI_NeedsProto(swprintf$LDBLStub) \
804 SymI_NeedsProto(swscanf$LDBLStub) \
805 SymI_NeedsProto(syslog$LDBLStub) \
806 SymI_NeedsProto(vasprintf$LDBLStub) \
807 SymI_NeedsProto(verr$LDBLStub) \
808 SymI_NeedsProto(verrc$LDBLStub) \
809 SymI_NeedsProto(verrx$LDBLStub) \
810 SymI_NeedsProto(vfprintf$LDBLStub) \
811 SymI_NeedsProto(vfscanf$LDBLStub) \
812 SymI_NeedsProto(vfwprintf$LDBLStub) \
813 SymI_NeedsProto(vfwscanf$LDBLStub) \
814 SymI_NeedsProto(vprintf$LDBLStub) \
815 SymI_NeedsProto(vscanf$LDBLStub) \
816 SymI_NeedsProto(vsnprintf$LDBLStub) \
817 SymI_NeedsProto(vsprintf$LDBLStub) \
818 SymI_NeedsProto(vsscanf$LDBLStub) \
819 SymI_NeedsProto(vswprintf$LDBLStub) \
820 SymI_NeedsProto(vswscanf$LDBLStub) \
821 SymI_NeedsProto(vsyslog$LDBLStub) \
822 SymI_NeedsProto(vwarn$LDBLStub) \
823 SymI_NeedsProto(vwarnc$LDBLStub) \
824 SymI_NeedsProto(vwarnx$LDBLStub) \
825 SymI_NeedsProto(vwprintf$LDBLStub) \
826 SymI_NeedsProto(vwscanf$LDBLStub) \
827 SymI_NeedsProto(warn$LDBLStub) \
828 SymI_NeedsProto(warnc$LDBLStub) \
829 SymI_NeedsProto(warnx$LDBLStub) \
830 SymI_NeedsProto(wcstold$LDBLStub) \
831 SymI_NeedsProto(wprintf$LDBLStub) \
832 SymI_NeedsProto(wscanf$LDBLStub)
833 #else
834 #define RTS_DARWIN_ONLY_SYMBOLS
835 #endif
836
837 #ifndef SMP
838 # define MAIN_CAP_SYM SymI_HasProto(MainCapability)
839 #else
840 # define MAIN_CAP_SYM
841 #endif
842
843 #if !defined(mingw32_HOST_OS)
844 #define RTS_USER_SIGNALS_SYMBOLS \
845 SymI_HasProto(setIOManagerControlFd) \
846 SymI_HasProto(setIOManagerWakeupFd) \
847 SymI_HasProto(ioManagerWakeup) \
848 SymI_HasProto(blockUserSignals) \
849 SymI_HasProto(unblockUserSignals)
850 #else
851 #define RTS_USER_SIGNALS_SYMBOLS \
852 SymI_HasProto(ioManagerWakeup) \
853 SymI_HasProto(sendIOManagerEvent) \
854 SymI_HasProto(readIOManagerEvent) \
855 SymI_HasProto(getIOManagerEvent) \
856 SymI_HasProto(console_handler)
857 #endif
858
859 #define RTS_LIBFFI_SYMBOLS \
860 SymE_NeedsProto(ffi_prep_cif) \
861 SymE_NeedsProto(ffi_call) \
862 SymE_NeedsProto(ffi_type_void) \
863 SymE_NeedsProto(ffi_type_float) \
864 SymE_NeedsProto(ffi_type_double) \
865 SymE_NeedsProto(ffi_type_sint64) \
866 SymE_NeedsProto(ffi_type_uint64) \
867 SymE_NeedsProto(ffi_type_sint32) \
868 SymE_NeedsProto(ffi_type_uint32) \
869 SymE_NeedsProto(ffi_type_sint16) \
870 SymE_NeedsProto(ffi_type_uint16) \
871 SymE_NeedsProto(ffi_type_sint8) \
872 SymE_NeedsProto(ffi_type_uint8) \
873 SymE_NeedsProto(ffi_type_pointer)
874
875 #ifdef TABLES_NEXT_TO_CODE
876 #define RTS_RET_SYMBOLS /* nothing */
877 #else
878 #define RTS_RET_SYMBOLS \
879 SymI_HasProto(stg_enter_ret) \
880 SymI_HasProto(stg_gc_fun_ret) \
881 SymI_HasProto(stg_ap_v_ret) \
882 SymI_HasProto(stg_ap_f_ret) \
883 SymI_HasProto(stg_ap_d_ret) \
884 SymI_HasProto(stg_ap_l_ret) \
885 SymI_HasProto(stg_ap_v16_ret) \
886 SymI_HasProto(stg_ap_v32_ret) \
887 SymI_HasProto(stg_ap_v64_ret) \
888 SymI_HasProto(stg_ap_n_ret) \
889 SymI_HasProto(stg_ap_p_ret) \
890 SymI_HasProto(stg_ap_pv_ret) \
891 SymI_HasProto(stg_ap_pp_ret) \
892 SymI_HasProto(stg_ap_ppv_ret) \
893 SymI_HasProto(stg_ap_ppp_ret) \
894 SymI_HasProto(stg_ap_pppv_ret) \
895 SymI_HasProto(stg_ap_pppp_ret) \
896 SymI_HasProto(stg_ap_ppppp_ret) \
897 SymI_HasProto(stg_ap_pppppp_ret)
898 #endif
899
900 /* Modules compiled with -ticky may mention ticky counters */
901 /* This list should marry up with the one in $(TOP)/includes/stg/Ticky.h */
902 #define RTS_TICKY_SYMBOLS \
903 SymI_NeedsProto(ticky_entry_ctrs) \
904 SymI_NeedsProto(top_ct) \
905 \
906 SymI_HasProto(ENT_VIA_NODE_ctr) \
907 SymI_HasProto(ENT_STATIC_THK_SINGLE_ctr) \
908 SymI_HasProto(ENT_STATIC_THK_MANY_ctr) \
909 SymI_HasProto(ENT_DYN_THK_SINGLE_ctr) \
910 SymI_HasProto(ENT_DYN_THK_MANY_ctr) \
911 SymI_HasProto(ENT_STATIC_FUN_DIRECT_ctr) \
912 SymI_HasProto(ENT_DYN_FUN_DIRECT_ctr) \
913 SymI_HasProto(ENT_STATIC_CON_ctr) \
914 SymI_HasProto(ENT_DYN_CON_ctr) \
915 SymI_HasProto(ENT_STATIC_IND_ctr) \
916 SymI_HasProto(ENT_DYN_IND_ctr) \
917 SymI_HasProto(ENT_PERM_IND_ctr) \
918 SymI_HasProto(ENT_PAP_ctr) \
919 SymI_HasProto(ENT_AP_ctr) \
920 SymI_HasProto(ENT_AP_STACK_ctr) \
921 SymI_HasProto(ENT_BH_ctr) \
922 SymI_HasProto(ENT_LNE_ctr) \
923 SymI_HasProto(UNKNOWN_CALL_ctr) \
924 SymI_HasProto(SLOW_CALL_fast_v16_ctr) \
925 SymI_HasProto(SLOW_CALL_fast_v_ctr) \
926 SymI_HasProto(SLOW_CALL_fast_f_ctr) \
927 SymI_HasProto(SLOW_CALL_fast_d_ctr) \
928 SymI_HasProto(SLOW_CALL_fast_l_ctr) \
929 SymI_HasProto(SLOW_CALL_fast_n_ctr) \
930 SymI_HasProto(SLOW_CALL_fast_p_ctr) \
931 SymI_HasProto(SLOW_CALL_fast_pv_ctr) \
932 SymI_HasProto(SLOW_CALL_fast_pp_ctr) \
933 SymI_HasProto(SLOW_CALL_fast_ppv_ctr) \
934 SymI_HasProto(SLOW_CALL_fast_ppp_ctr) \
935 SymI_HasProto(SLOW_CALL_fast_pppv_ctr) \
936 SymI_HasProto(SLOW_CALL_fast_pppp_ctr) \
937 SymI_HasProto(SLOW_CALL_fast_ppppp_ctr) \
938 SymI_HasProto(SLOW_CALL_fast_pppppp_ctr) \
939 SymI_HasProto(VERY_SLOW_CALL_ctr) \
940 SymI_HasProto(ticky_slow_call_unevald) \
941 SymI_HasProto(SLOW_CALL_ctr) \
942 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_ctr) \
943 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_CHUNKS_ctr) \
944 SymI_HasProto(KNOWN_CALL_ctr) \
945 SymI_HasProto(KNOWN_CALL_TOO_FEW_ARGS_ctr) \
946 SymI_HasProto(KNOWN_CALL_EXTRA_ARGS_ctr) \
947 SymI_HasProto(SLOW_CALL_FUN_TOO_FEW_ctr) \
948 SymI_HasProto(SLOW_CALL_FUN_CORRECT_ctr) \
949 SymI_HasProto(SLOW_CALL_FUN_TOO_MANY_ctr) \
950 SymI_HasProto(SLOW_CALL_PAP_TOO_FEW_ctr) \
951 SymI_HasProto(SLOW_CALL_PAP_CORRECT_ctr) \
952 SymI_HasProto(SLOW_CALL_PAP_TOO_MANY_ctr) \
953 SymI_HasProto(SLOW_CALL_UNEVALD_ctr) \
954 SymI_HasProto(UPDF_OMITTED_ctr) \
955 SymI_HasProto(UPDF_PUSHED_ctr) \
956 SymI_HasProto(CATCHF_PUSHED_ctr) \
957 SymI_HasProto(UPDF_RCC_PUSHED_ctr) \
958 SymI_HasProto(UPDF_RCC_OMITTED_ctr) \
959 SymI_HasProto(UPD_SQUEEZED_ctr) \
960 SymI_HasProto(UPD_CON_IN_NEW_ctr) \
961 SymI_HasProto(UPD_CON_IN_PLACE_ctr) \
962 SymI_HasProto(UPD_PAP_IN_NEW_ctr) \
963 SymI_HasProto(UPD_PAP_IN_PLACE_ctr) \
964 SymI_HasProto(ALLOC_HEAP_ctr) \
965 SymI_HasProto(ALLOC_HEAP_tot) \
966 SymI_HasProto(HEAP_CHK_ctr) \
967 SymI_HasProto(STK_CHK_ctr) \
968 SymI_HasProto(ALLOC_RTS_ctr) \
969 SymI_HasProto(ALLOC_RTS_tot) \
970 SymI_HasProto(ALLOC_FUN_ctr) \
971 SymI_HasProto(ALLOC_FUN_adm) \
972 SymI_HasProto(ALLOC_FUN_gds) \
973 SymI_HasProto(ALLOC_FUN_slp) \
974 SymI_HasProto(UPD_NEW_IND_ctr) \
975 SymI_HasProto(UPD_NEW_PERM_IND_ctr) \
976 SymI_HasProto(UPD_OLD_IND_ctr) \
977 SymI_HasProto(UPD_OLD_PERM_IND_ctr) \
978 SymI_HasProto(UPD_CAF_BH_UPDATABLE_ctr) \
979 SymI_HasProto(UPD_CAF_BH_SINGLE_ENTRY_ctr) \
980 SymI_HasProto(GC_SEL_ABANDONED_ctr) \
981 SymI_HasProto(GC_SEL_MINOR_ctr) \
982 SymI_HasProto(GC_SEL_MAJOR_ctr) \
983 SymI_HasProto(GC_FAILED_PROMOTION_ctr) \
984 SymI_HasProto(ALLOC_UP_THK_ctr) \
985 SymI_HasProto(ALLOC_SE_THK_ctr) \
986 SymI_HasProto(ALLOC_THK_adm) \
987 SymI_HasProto(ALLOC_THK_gds) \
988 SymI_HasProto(ALLOC_THK_slp) \
989 SymI_HasProto(ALLOC_CON_ctr) \
990 SymI_HasProto(ALLOC_CON_adm) \
991 SymI_HasProto(ALLOC_CON_gds) \
992 SymI_HasProto(ALLOC_CON_slp) \
993 SymI_HasProto(ALLOC_TUP_ctr) \
994 SymI_HasProto(ALLOC_TUP_adm) \
995 SymI_HasProto(ALLOC_TUP_gds) \
996 SymI_HasProto(ALLOC_TUP_slp) \
997 SymI_HasProto(ALLOC_BH_ctr) \
998 SymI_HasProto(ALLOC_BH_adm) \
999 SymI_HasProto(ALLOC_BH_gds) \
1000 SymI_HasProto(ALLOC_BH_slp) \
1001 SymI_HasProto(ALLOC_PRIM_ctr) \
1002 SymI_HasProto(ALLOC_PRIM_adm) \
1003 SymI_HasProto(ALLOC_PRIM_gds) \
1004 SymI_HasProto(ALLOC_PRIM_slp) \
1005 SymI_HasProto(ALLOC_PAP_ctr) \
1006 SymI_HasProto(ALLOC_PAP_adm) \
1007 SymI_HasProto(ALLOC_PAP_gds) \
1008 SymI_HasProto(ALLOC_PAP_slp) \
1009 SymI_HasProto(ALLOC_TSO_ctr) \
1010 SymI_HasProto(ALLOC_TSO_adm) \
1011 SymI_HasProto(ALLOC_TSO_gds) \
1012 SymI_HasProto(ALLOC_TSO_slp) \
1013 SymI_HasProto(RET_NEW_ctr) \
1014 SymI_HasProto(RET_OLD_ctr) \
1015 SymI_HasProto(RET_UNBOXED_TUP_ctr) \
1016 SymI_HasProto(RET_SEMI_loads_avoided)
1017
1018
1019 // On most platforms, the garbage collector rewrites references
1020 // to small integer and char objects to a set of common, shared ones.
1021 //
1022 // We don't do this when compiling to Windows DLLs at the moment because
1023 // it doesn't support cross package data references well.
1024 //
1025 #if defined(COMPILING_WINDOWS_DLL)
1026 #define RTS_INTCHAR_SYMBOLS
1027 #else
1028 #define RTS_INTCHAR_SYMBOLS \
1029 SymI_HasProto(stg_CHARLIKE_closure) \
1030 SymI_HasProto(stg_INTLIKE_closure)
1031 #endif
1032
1033
1034 #define RTS_SYMBOLS \
1035 Maybe_Stable_Names \
1036 RTS_TICKY_SYMBOLS \
1037 SymI_HasProto(StgReturn) \
1038 SymI_HasProto(stg_gc_noregs) \
1039 SymI_HasProto(stg_ret_v_info) \
1040 SymI_HasProto(stg_ret_p_info) \
1041 SymI_HasProto(stg_ret_n_info) \
1042 SymI_HasProto(stg_ret_f_info) \
1043 SymI_HasProto(stg_ret_d_info) \
1044 SymI_HasProto(stg_ret_l_info) \
1045 SymI_HasProto(stg_gc_prim_p) \
1046 SymI_HasProto(stg_gc_prim_pp) \
1047 SymI_HasProto(stg_gc_prim_n) \
1048 SymI_HasProto(stg_enter_info) \
1049 SymI_HasProto(__stg_gc_enter_1) \
1050 SymI_HasProto(stg_gc_unpt_r1) \
1051 SymI_HasProto(stg_gc_unbx_r1) \
1052 SymI_HasProto(stg_gc_f1) \
1053 SymI_HasProto(stg_gc_d1) \
1054 SymI_HasProto(stg_gc_l1) \
1055 SymI_HasProto(stg_gc_pp) \
1056 SymI_HasProto(stg_gc_ppp) \
1057 SymI_HasProto(stg_gc_pppp) \
1058 SymI_HasProto(__stg_gc_fun) \
1059 SymI_HasProto(stg_gc_fun_info) \
1060 SymI_HasProto(stg_yield_noregs) \
1061 SymI_HasProto(stg_yield_to_interpreter) \
1062 SymI_HasProto(stg_block_noregs) \
1063 SymI_HasProto(stg_block_takemvar) \
1064 SymI_HasProto(stg_block_readmvar) \
1065 SymI_HasProto(stg_block_putmvar) \
1066 MAIN_CAP_SYM \
1067 SymI_HasProto(MallocFailHook) \
1068 SymI_HasProto(OnExitHook) \
1069 SymI_HasProto(OutOfHeapHook) \
1070 SymI_HasProto(StackOverflowHook) \
1071 SymI_HasProto(addDLL) \
1072 SymI_HasProto(__int_encodeDouble) \
1073 SymI_HasProto(__word_encodeDouble) \
1074 SymI_HasProto(__int_encodeFloat) \
1075 SymI_HasProto(__word_encodeFloat) \
1076 SymI_HasProto(stg_atomicallyzh) \
1077 SymI_HasProto(barf) \
1078 SymI_HasProto(debugBelch) \
1079 SymI_HasProto(errorBelch) \
1080 SymI_HasProto(sysErrorBelch) \
1081 SymI_HasProto(stg_getMaskingStatezh) \
1082 SymI_HasProto(stg_maskAsyncExceptionszh) \
1083 SymI_HasProto(stg_maskUninterruptiblezh) \
1084 SymI_HasProto(stg_catchzh) \
1085 SymI_HasProto(stg_catchRetryzh) \
1086 SymI_HasProto(stg_catchSTMzh) \
1087 SymI_HasProto(stg_checkzh) \
1088 SymI_HasProto(closure_flags) \
1089 SymI_HasProto(cmp_thread) \
1090 SymI_HasProto(createAdjustor) \
1091 SymI_HasProto(stg_decodeDoublezu2Intzh) \
1092 SymI_HasProto(stg_decodeFloatzuIntzh) \
1093 SymI_HasProto(defaultsHook) \
1094 SymI_HasProto(stg_delayzh) \
1095 SymI_HasProto(stg_deRefWeakzh) \
1096 SymI_HasProto(stg_deRefStablePtrzh) \
1097 SymI_HasProto(dirty_MUT_VAR) \
1098 SymI_HasProto(dirty_TVAR) \
1099 SymI_HasProto(stg_forkzh) \
1100 SymI_HasProto(stg_forkOnzh) \
1101 SymI_HasProto(forkProcess) \
1102 SymI_HasProto(forkOS_createThread) \
1103 SymI_HasProto(freeHaskellFunctionPtr) \
1104 SymI_HasProto(getOrSetGHCConcSignalSignalHandlerStore) \
1105 SymI_HasProto(getOrSetGHCConcWindowsPendingDelaysStore) \
1106 SymI_HasProto(getOrSetGHCConcWindowsIOManagerThreadStore) \
1107 SymI_HasProto(getOrSetGHCConcWindowsProddingStore) \
1108 SymI_HasProto(getOrSetSystemEventThreadEventManagerStore) \
1109 SymI_HasProto(getOrSetSystemEventThreadIOManagerThreadStore) \
1110 SymI_HasProto(getOrSetSystemTimerThreadEventManagerStore) \
1111 SymI_HasProto(getOrSetSystemTimerThreadIOManagerThreadStore) \
1112 SymI_HasProto(getOrSetLibHSghcFastStringTable) \
1113 SymI_HasProto(getGCStats) \
1114 SymI_HasProto(getGCStatsEnabled) \
1115 SymI_HasProto(genericRaise) \
1116 SymI_HasProto(getProgArgv) \
1117 SymI_HasProto(getFullProgArgv) \
1118 SymI_HasProto(getStablePtr) \
1119 SymI_HasProto(foreignExportStablePtr) \
1120 SymI_HasProto(hs_init) \
1121 SymI_HasProto(hs_exit) \
1122 SymI_HasProto(hs_set_argv) \
1123 SymI_HasProto(hs_add_root) \
1124 SymI_HasProto(hs_perform_gc) \
1125 SymI_HasProto(hs_lock_stable_tables) \
1126 SymI_HasProto(hs_unlock_stable_tables) \
1127 SymI_HasProto(hs_free_stable_ptr) \
1128 SymI_HasProto(hs_free_stable_ptr_unsafe) \
1129 SymI_HasProto(hs_free_fun_ptr) \
1130 SymI_HasProto(hs_hpc_rootModule) \
1131 SymI_HasProto(hs_hpc_module) \
1132 SymI_HasProto(initLinker) \
1133 SymI_HasProto(stg_unpackClosurezh) \
1134 SymI_HasProto(stg_getApStackValzh) \
1135 SymI_HasProto(stg_getSparkzh) \
1136 SymI_HasProto(stg_numSparkszh) \
1137 SymI_HasProto(stg_isCurrentThreadBoundzh) \
1138 SymI_HasProto(stg_isEmptyMVarzh) \
1139 SymI_HasProto(stg_killThreadzh) \
1140 SymI_HasProto(loadArchive) \
1141 SymI_HasProto(loadObj) \
1142 SymI_HasProto(insertStableSymbol) \
1143 SymI_HasProto(insertSymbol) \
1144 SymI_HasProto(lookupSymbol) \
1145 SymI_HasProto(stg_makeStablePtrzh) \
1146 SymI_HasProto(stg_mkApUpd0zh) \
1147 SymI_HasProto(stg_myThreadIdzh) \
1148 SymI_HasProto(stg_labelThreadzh) \
1149 SymI_HasProto(stg_newArrayzh) \
1150 SymI_HasProto(stg_newArrayArrayzh) \
1151 SymI_HasProto(stg_casArrayzh) \
1152 SymI_HasProto(stg_newBCOzh) \
1153 SymI_HasProto(stg_newByteArrayzh) \
1154 SymI_HasProto(stg_casIntArrayzh) \
1155 SymI_HasProto(stg_fetchAddIntArrayzh) \
1156 SymI_HasProto_redirect(newCAF, newDynCAF) \
1157 SymI_HasProto(stg_newMVarzh) \
1158 SymI_HasProto(stg_newMutVarzh) \
1159 SymI_HasProto(stg_newTVarzh) \
1160 SymI_HasProto(stg_noDuplicatezh) \
1161 SymI_HasProto(stg_atomicModifyMutVarzh) \
1162 SymI_HasProto(stg_casMutVarzh) \
1163 SymI_HasProto(stg_newPinnedByteArrayzh) \
1164 SymI_HasProto(stg_newAlignedPinnedByteArrayzh) \
1165 SymI_HasProto(newSpark) \
1166 SymI_HasProto(performGC) \
1167 SymI_HasProto(performMajorGC) \
1168 SymI_HasProto(prog_argc) \
1169 SymI_HasProto(prog_argv) \
1170 SymI_HasProto(stg_putMVarzh) \
1171 SymI_HasProto(stg_raisezh) \
1172 SymI_HasProto(stg_raiseIOzh) \
1173 SymI_HasProto(stg_readTVarzh) \
1174 SymI_HasProto(stg_readTVarIOzh) \
1175 SymI_HasProto(resumeThread) \
1176 SymI_HasProto(setNumCapabilities) \
1177 SymI_HasProto(getNumberOfProcessors) \
1178 SymI_HasProto(resolveObjs) \
1179 SymI_HasProto(stg_retryzh) \
1180 SymI_HasProto(rts_apply) \
1181 SymI_HasProto(rts_checkSchedStatus) \
1182 SymI_HasProto(rts_eval) \
1183 SymI_HasProto(rts_evalIO) \
1184 SymI_HasProto(rts_evalLazyIO) \
1185 SymI_HasProto(rts_evalStableIO) \
1186 SymI_HasProto(rts_eval_) \
1187 SymI_HasProto(rts_getBool) \
1188 SymI_HasProto(rts_getChar) \
1189 SymI_HasProto(rts_getDouble) \
1190 SymI_HasProto(rts_getFloat) \
1191 SymI_HasProto(rts_getInt) \
1192 SymI_HasProto(rts_getInt8) \
1193 SymI_HasProto(rts_getInt16) \
1194 SymI_HasProto(rts_getInt32) \
1195 SymI_HasProto(rts_getInt64) \
1196 SymI_HasProto(rts_getPtr) \
1197 SymI_HasProto(rts_getFunPtr) \
1198 SymI_HasProto(rts_getStablePtr) \
1199 SymI_HasProto(rts_getThreadId) \
1200 SymI_HasProto(rts_getWord) \
1201 SymI_HasProto(rts_getWord8) \
1202 SymI_HasProto(rts_getWord16) \
1203 SymI_HasProto(rts_getWord32) \
1204 SymI_HasProto(rts_getWord64) \
1205 SymI_HasProto(rts_lock) \
1206 SymI_HasProto(rts_mkBool) \
1207 SymI_HasProto(rts_mkChar) \
1208 SymI_HasProto(rts_mkDouble) \
1209 SymI_HasProto(rts_mkFloat) \
1210 SymI_HasProto(rts_mkInt) \
1211 SymI_HasProto(rts_mkInt8) \
1212 SymI_HasProto(rts_mkInt16) \
1213 SymI_HasProto(rts_mkInt32) \
1214 SymI_HasProto(rts_mkInt64) \
1215 SymI_HasProto(rts_mkPtr) \
1216 SymI_HasProto(rts_mkFunPtr) \
1217 SymI_HasProto(rts_mkStablePtr) \
1218 SymI_HasProto(rts_mkString) \
1219 SymI_HasProto(rts_mkWord) \
1220 SymI_HasProto(rts_mkWord8) \
1221 SymI_HasProto(rts_mkWord16) \
1222 SymI_HasProto(rts_mkWord32) \
1223 SymI_HasProto(rts_mkWord64) \
1224 SymI_HasProto(rts_unlock) \
1225 SymI_HasProto(rts_unsafeGetMyCapability) \
1226 SymI_HasProto(rtsSupportsBoundThreads) \
1227 SymI_HasProto(rts_isProfiled) \
1228 SymI_HasProto(rts_isDynamic) \
1229 SymI_HasProto(setProgArgv) \
1230 SymI_HasProto(startupHaskell) \
1231 SymI_HasProto(shutdownHaskell) \
1232 SymI_HasProto(shutdownHaskellAndExit) \
1233 SymI_HasProto(stable_name_table) \
1234 SymI_HasProto(stable_ptr_table) \
1235 SymI_HasProto(stackOverflow) \
1236 SymI_HasProto(stg_CAF_BLACKHOLE_info) \
1237 SymI_HasProto(stg_BLACKHOLE_info) \
1238 SymI_HasProto(__stg_EAGER_BLACKHOLE_info) \
1239 SymI_HasProto(stg_BLOCKING_QUEUE_CLEAN_info) \
1240 SymI_HasProto(stg_BLOCKING_QUEUE_DIRTY_info) \
1241 SymI_HasProto(startTimer) \
1242 SymI_HasProto(stg_MVAR_CLEAN_info) \
1243 SymI_HasProto(stg_MVAR_DIRTY_info) \
1244 SymI_HasProto(stg_TVAR_CLEAN_info) \
1245 SymI_HasProto(stg_TVAR_DIRTY_info) \
1246 SymI_HasProto(stg_IND_STATIC_info) \
1247 SymI_HasProto(stg_ARR_WORDS_info) \
1248 SymI_HasProto(stg_MUT_ARR_PTRS_DIRTY_info) \
1249 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN_info) \
1250 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN0_info) \
1251 SymI_HasProto(stg_MUT_VAR_CLEAN_info) \
1252 SymI_HasProto(stg_MUT_VAR_DIRTY_info) \
1253 SymI_HasProto(stg_WEAK_info) \
1254 SymI_HasProto(stg_ap_v_info) \
1255 SymI_HasProto(stg_ap_f_info) \
1256 SymI_HasProto(stg_ap_d_info) \
1257 SymI_HasProto(stg_ap_l_info) \
1258 SymI_HasProto(stg_ap_v16_info) \
1259 SymI_HasProto(stg_ap_v32_info) \
1260 SymI_HasProto(stg_ap_v64_info) \
1261 SymI_HasProto(stg_ap_n_info) \
1262 SymI_HasProto(stg_ap_p_info) \
1263 SymI_HasProto(stg_ap_pv_info) \
1264 SymI_HasProto(stg_ap_pp_info) \
1265 SymI_HasProto(stg_ap_ppv_info) \
1266 SymI_HasProto(stg_ap_ppp_info) \
1267 SymI_HasProto(stg_ap_pppv_info) \
1268 SymI_HasProto(stg_ap_pppp_info) \
1269 SymI_HasProto(stg_ap_ppppp_info) \
1270 SymI_HasProto(stg_ap_pppppp_info) \
1271 SymI_HasProto(stg_ap_0_fast) \
1272 SymI_HasProto(stg_ap_v_fast) \
1273 SymI_HasProto(stg_ap_f_fast) \
1274 SymI_HasProto(stg_ap_d_fast) \
1275 SymI_HasProto(stg_ap_l_fast) \
1276 SymI_HasProto(stg_ap_v16_fast) \
1277 SymI_HasProto(stg_ap_v32_fast) \
1278 SymI_HasProto(stg_ap_v64_fast) \
1279 SymI_HasProto(stg_ap_n_fast) \
1280 SymI_HasProto(stg_ap_p_fast) \
1281 SymI_HasProto(stg_ap_pv_fast) \
1282 SymI_HasProto(stg_ap_pp_fast) \
1283 SymI_HasProto(stg_ap_ppv_fast) \
1284 SymI_HasProto(stg_ap_ppp_fast) \
1285 SymI_HasProto(stg_ap_pppv_fast) \
1286 SymI_HasProto(stg_ap_pppp_fast) \
1287 SymI_HasProto(stg_ap_ppppp_fast) \
1288 SymI_HasProto(stg_ap_pppppp_fast) \
1289 SymI_HasProto(stg_ap_1_upd_info) \
1290 SymI_HasProto(stg_ap_2_upd_info) \
1291 SymI_HasProto(stg_ap_3_upd_info) \
1292 SymI_HasProto(stg_ap_4_upd_info) \
1293 SymI_HasProto(stg_ap_5_upd_info) \
1294 SymI_HasProto(stg_ap_6_upd_info) \
1295 SymI_HasProto(stg_ap_7_upd_info) \
1296 SymI_HasProto(stg_exit) \
1297 SymI_HasProto(stg_sel_0_upd_info) \
1298 SymI_HasProto(stg_sel_1_upd_info) \
1299 SymI_HasProto(stg_sel_2_upd_info) \
1300 SymI_HasProto(stg_sel_3_upd_info) \
1301 SymI_HasProto(stg_sel_4_upd_info) \
1302 SymI_HasProto(stg_sel_5_upd_info) \
1303 SymI_HasProto(stg_sel_6_upd_info) \
1304 SymI_HasProto(stg_sel_7_upd_info) \
1305 SymI_HasProto(stg_sel_8_upd_info) \
1306 SymI_HasProto(stg_sel_9_upd_info) \
1307 SymI_HasProto(stg_sel_10_upd_info) \
1308 SymI_HasProto(stg_sel_11_upd_info) \
1309 SymI_HasProto(stg_sel_12_upd_info) \
1310 SymI_HasProto(stg_sel_13_upd_info) \
1311 SymI_HasProto(stg_sel_14_upd_info) \
1312 SymI_HasProto(stg_sel_15_upd_info) \
1313 SymI_HasProto(stg_sel_0_noupd_info) \
1314 SymI_HasProto(stg_sel_1_noupd_info) \
1315 SymI_HasProto(stg_sel_2_noupd_info) \
1316 SymI_HasProto(stg_sel_3_noupd_info) \
1317 SymI_HasProto(stg_sel_4_noupd_info) \
1318 SymI_HasProto(stg_sel_5_noupd_info) \
1319 SymI_HasProto(stg_sel_6_noupd_info) \
1320 SymI_HasProto(stg_sel_7_noupd_info) \
1321 SymI_HasProto(stg_sel_8_noupd_info) \
1322 SymI_HasProto(stg_sel_9_noupd_info) \
1323 SymI_HasProto(stg_sel_10_noupd_info) \
1324 SymI_HasProto(stg_sel_11_noupd_info) \
1325 SymI_HasProto(stg_sel_12_noupd_info) \
1326 SymI_HasProto(stg_sel_13_noupd_info) \
1327 SymI_HasProto(stg_sel_14_noupd_info) \
1328 SymI_HasProto(stg_sel_15_noupd_info) \
1329 SymI_HasProto(stg_upd_frame_info) \
1330 SymI_HasProto(stg_bh_upd_frame_info) \
1331 SymI_HasProto(suspendThread) \
1332 SymI_HasProto(stg_takeMVarzh) \
1333 SymI_HasProto(stg_readMVarzh) \
1334 SymI_HasProto(stg_threadStatuszh) \
1335 SymI_HasProto(stg_tryPutMVarzh) \
1336 SymI_HasProto(stg_tryTakeMVarzh) \
1337 SymI_HasProto(stg_tryReadMVarzh) \
1338 SymI_HasProto(stg_unmaskAsyncExceptionszh) \
1339 SymI_HasProto(unloadObj) \
1340 SymI_HasProto(stg_unsafeThawArrayzh) \
1341 SymI_HasProto(stg_waitReadzh) \
1342 SymI_HasProto(stg_waitWritezh) \
1343 SymI_HasProto(stg_writeTVarzh) \
1344 SymI_HasProto(stg_yieldzh) \
1345 SymI_NeedsProto(stg_interp_constr_entry) \
1346 SymI_HasProto(stg_arg_bitmaps) \
1347 SymI_HasProto(large_alloc_lim) \
1348 SymI_HasProto(g0) \
1349 SymI_HasProto(allocate) \
1350 SymI_HasProto(allocateExec) \
1351 SymI_HasProto(freeExec) \
1352 SymI_HasProto(getAllocations) \
1353 SymI_HasProto(revertCAFs) \
1354 SymI_HasProto(RtsFlags) \
1355 SymI_NeedsProto(rts_breakpoint_io_action) \
1356 SymI_NeedsProto(rts_stop_next_breakpoint) \
1357 SymI_NeedsProto(rts_stop_on_exception) \
1358 SymI_HasProto(stopTimer) \
1359 SymI_HasProto(n_capabilities) \
1360 SymI_HasProto(enabled_capabilities) \
1361 SymI_HasProto(stg_traceCcszh) \
1362 SymI_HasProto(stg_traceEventzh) \
1363 SymI_HasProto(stg_traceMarkerzh) \
1364 SymI_HasProto(getMonotonicNSec) \
1365 SymI_HasProto(lockFile) \
1366 SymI_HasProto(unlockFile) \
1367 SymI_HasProto(startProfTimer) \
1368 SymI_HasProto(stopProfTimer) \
1369 SymI_HasProto(atomic_inc) \
1370 SymI_HasProto(atomic_dec) \
1371 RTS_USER_SIGNALS_SYMBOLS \
1372 RTS_INTCHAR_SYMBOLS
1373
1374
1375 // 64-bit support functions in libgcc.a
1376 #if defined(__GNUC__) && SIZEOF_VOID_P <= 4 && !defined(_ABIN32)
1377 #define RTS_LIBGCC_SYMBOLS \
1378 SymI_NeedsProto(__divdi3) \
1379 SymI_NeedsProto(__udivdi3) \
1380 SymI_NeedsProto(__moddi3) \
1381 SymI_NeedsProto(__umoddi3) \
1382 SymI_NeedsProto(__muldi3) \
1383 SymI_NeedsProto(__ashldi3) \
1384 SymI_NeedsProto(__ashrdi3) \
1385 SymI_NeedsProto(__lshrdi3) \
1386 SymI_NeedsProto(__fixunsdfdi)
1387 #else
1388 #define RTS_LIBGCC_SYMBOLS
1389 #endif
1390
1391 #if defined(darwin_HOST_OS) && defined(powerpc_HOST_ARCH)
1392 // Symbols that don't have a leading underscore
1393 // on Mac OS X. They have to receive special treatment,
1394 // see machoInitSymbolsWithoutUnderscore()
1395 #define RTS_MACHO_NOUNDERLINE_SYMBOLS \
1396 SymI_NeedsProto(saveFP) \
1397 SymI_NeedsProto(restFP)
1398 #endif
1399
1400 /* entirely bogus claims about types of these symbols */
1401 #define SymI_NeedsProto(vvv) extern void vvv(void);
1402 #if defined(COMPILING_WINDOWS_DLL)
1403 #define SymE_HasProto(vvv) SymE_HasProto(vvv);
1404 # if defined(x86_64_HOST_ARCH)
1405 # define SymE_NeedsProto(vvv) extern void __imp_ ## vvv (void);
1406 # else
1407 # define SymE_NeedsProto(vvv) extern void _imp__ ## vvv (void);
1408 # endif
1409 #else
1410 #define SymE_NeedsProto(vvv) SymI_NeedsProto(vvv);
1411 #define SymE_HasProto(vvv) SymI_HasProto(vvv)
1412 #endif
1413 #define SymI_HasProto(vvv) /**/
1414 #define SymI_HasProto_redirect(vvv,xxx) /**/
1415 RTS_SYMBOLS
1416 RTS_RET_SYMBOLS
1417 RTS_POSIX_ONLY_SYMBOLS
1418 RTS_MINGW_ONLY_SYMBOLS
1419 RTS_CYGWIN_ONLY_SYMBOLS
1420 RTS_DARWIN_ONLY_SYMBOLS
1421 RTS_LIBGCC_SYMBOLS
1422 RTS_LIBFFI_SYMBOLS
1423 #undef SymI_NeedsProto
1424 #undef SymI_HasProto
1425 #undef SymI_HasProto_redirect
1426 #undef SymE_HasProto
1427 #undef SymE_NeedsProto
1428
1429 #ifdef LEADING_UNDERSCORE
1430 #define MAYBE_LEADING_UNDERSCORE_STR(s) ("_" s)
1431 #else
1432 #define MAYBE_LEADING_UNDERSCORE_STR(s) (s)
1433 #endif
1434
1435 #define SymI_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1436 (void*)(&(vvv)) },
1437 #define SymE_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1438 (void*)DLL_IMPORT_DATA_REF(vvv) },
1439
1440 #define SymI_NeedsProto(vvv) SymI_HasProto(vvv)
1441 #define SymE_NeedsProto(vvv) SymE_HasProto(vvv)
1442
1443 // SymI_HasProto_redirect allows us to redirect references to one symbol to
1444 // another symbol. See newCAF/newDynCAF for an example.
1445 #define SymI_HasProto_redirect(vvv,xxx) \
1446 { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1447 (void*)(&(xxx)) },
1448
1449 static RtsSymbolVal rtsSyms[] = {
1450 RTS_SYMBOLS
1451 RTS_RET_SYMBOLS
1452 RTS_POSIX_ONLY_SYMBOLS
1453 RTS_MINGW_ONLY_SYMBOLS
1454 RTS_CYGWIN_ONLY_SYMBOLS
1455 RTS_DARWIN_ONLY_SYMBOLS
1456 RTS_LIBGCC_SYMBOLS
1457 RTS_LIBFFI_SYMBOLS
1458 #if defined(darwin_HOST_OS) && defined(i386_HOST_ARCH)
1459 // dyld stub code contains references to this,
1460 // but it should never be called because we treat
1461 // lazy pointers as nonlazy.
1462 { "dyld_stub_binding_helper", (void*)0xDEADBEEF },
1463 #endif
1464 { 0, 0 } /* sentinel */
1465 };
1466
1467
1468 /* -----------------------------------------------------------------------------
1469 * Insert symbols into hash tables, checking for duplicates.
1470 */
1471
1472 static void ghciInsertStrHashTable ( pathchar* obj_name,
1473 HashTable *table,
1474 char* key,
1475 void *data
1476 )
1477 {
1478 if (lookupHashTable(table, (StgWord)key) == NULL)
1479 {
1480 insertStrHashTable(table, (StgWord)key, data);
1481 return;
1482 }
1483 debugBelch(
1484 "\n\n"
1485 "GHCi runtime linker: fatal error: I found a duplicate definition for symbol\n"
1486 " %s\n"
1487 "whilst processing object file\n"
1488 " %" PATH_FMT "\n"
1489 "This could be caused by:\n"
1490 " * Loading two different object files which export the same symbol\n"
1491 " * Specifying the same object file twice on the GHCi command line\n"
1492 " * An incorrect `package.conf' entry, causing some object to be\n"
1493 " loaded twice.\n"
1494 "GHCi cannot safely continue in this situation. Exiting now. Sorry.\n"
1495 "\n",
1496 (char*)key,
1497 obj_name
1498 );
1499 stg_exit(1);
1500 }
1501 /* -----------------------------------------------------------------------------
1502 * initialize the object linker
1503 */
1504
1505
1506 static int linker_init_done = 0 ;
1507
1508 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1509 static void *dl_prog_handle;
1510 static regex_t re_invalid;
1511 static regex_t re_realso;
1512 #ifdef THREADED_RTS
1513 static Mutex dl_mutex; // mutex to protect dlopen/dlerror critical section
1514 #endif
1515 #endif
1516
1517 void
1518 initLinker( void )
1519 {
1520 RtsSymbolVal *sym;
1521 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1522 int compileResult;
1523 #endif
1524
1525 IF_DEBUG(linker, debugBelch("initLinker: start\n"));
1526
1527 /* Make initLinker idempotent, so we can call it
1528 before every relevant operation; that means we
1529 don't need to initialise the linker separately */
1530 if (linker_init_done == 1) {
1531 IF_DEBUG(linker, debugBelch("initLinker: idempotent return\n"));
1532 return;
1533 } else {
1534 linker_init_done = 1;
1535 }
1536
1537 objects = NULL;
1538 unloaded_objects = NULL;
1539
1540 #if defined(THREADED_RTS) && (defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO))
1541 initMutex(&dl_mutex);
1542 #endif
1543 stablehash = allocStrHashTable();
1544 symhash = allocStrHashTable();
1545
1546 /* populate the symbol table with stuff from the RTS */
1547 for (sym = rtsSyms; sym->lbl != NULL; sym++) {
1548 ghciInsertStrHashTable(WSTR("(GHCi built-in symbols)"),
1549 symhash, sym->lbl, sym->addr);
1550 IF_DEBUG(linker, debugBelch("initLinker: inserting rts symbol %s, %p\n", sym->lbl, sym->addr));
1551 }
1552 # if defined(OBJFORMAT_MACHO) && defined(powerpc_HOST_ARCH)
1553 machoInitSymbolsWithoutUnderscore();
1554 # endif
1555
1556 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1557 # if defined(RTLD_DEFAULT)
1558 dl_prog_handle = RTLD_DEFAULT;
1559 # else
1560 dl_prog_handle = dlopen(NULL, RTLD_LAZY);
1561 # endif /* RTLD_DEFAULT */
1562
1563 compileResult = regcomp(&re_invalid,
1564 "(([^ \t()])+\\.so([^ \t:()])*):([ \t])*(invalid ELF header|file too short)",
1565 REG_EXTENDED);
1566 if (compileResult != 0) {
1567 barf("Compiling re_invalid failed");
1568 }
1569 compileResult = regcomp(&re_realso,
1570 "(GROUP|INPUT) *\\( *([^ )]+)",
1571 REG_EXTENDED);
1572 if (compileResult != 0) {
1573 barf("Compiling re_realso failed");
1574 }
1575 # endif
1576
1577 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1578 if (RtsFlags.MiscFlags.linkerMemBase != 0) {
1579 // User-override for mmap_32bit_base
1580 mmap_32bit_base = (void*)RtsFlags.MiscFlags.linkerMemBase;
1581 }
1582 #endif
1583
1584 #if defined(mingw32_HOST_OS)
1585 /*
1586 * These two libraries cause problems when added to the static link,
1587 * but are necessary for resolving symbols in GHCi, hence we load
1588 * them manually here.
1589 */
1590 addDLL(WSTR("msvcrt"));
1591 addDLL(WSTR("kernel32"));
1592 #endif
1593
1594 IF_DEBUG(linker, debugBelch("initLinker: done\n"));
1595 return;
1596 }
1597
1598 void
1599 exitLinker( void ) {
1600 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1601 if (linker_init_done == 1) {
1602 regfree(&re_invalid);
1603 regfree(&re_realso);
1604 #ifdef THREADED_RTS
1605 closeMutex(&dl_mutex);
1606 #endif
1607 }
1608 #endif
1609 }
1610
1611 /* -----------------------------------------------------------------------------
1612 * Loading DLL or .so dynamic libraries
1613 * -----------------------------------------------------------------------------
1614 *
1615 * Add a DLL from which symbols may be found. In the ELF case, just
1616 * do RTLD_GLOBAL-style add, so no further messing around needs to
1617 * happen in order that symbols in the loaded .so are findable --
1618 * lookupSymbol() will subsequently see them by dlsym on the program's
1619 * dl-handle. Returns NULL if success, otherwise ptr to an err msg.
1620 *
1621 * In the PEi386 case, open the DLLs and put handles to them in a
1622 * linked list. When looking for a symbol, try all handles in the
1623 * list. This means that we need to load even DLLs that are guaranteed
1624 * to be in the ghc.exe image already, just so we can get a handle
1625 * to give to loadSymbol, so that we can find the symbols. For such
1626 * libraries, the LoadLibrary call should be a no-op except for returning
1627 * the handle.
1628 *
1629 */
1630
1631 #if defined(OBJFORMAT_PEi386)
1632 /* A record for storing handles into DLLs. */
1633
1634 typedef
1635 struct _OpenedDLL {
1636 pathchar* name;
1637 struct _OpenedDLL* next;
1638 HINSTANCE instance;
1639 }
1640 OpenedDLL;
1641
1642 /* A list thereof. */
1643 static OpenedDLL* opened_dlls = NULL;
1644 #endif
1645
1646 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1647
1648 /* Suppose in ghci we load a temporary SO for a module containing
1649 f = 1
1650 and then modify the module, recompile, and load another temporary
1651 SO with
1652 f = 2
1653 Then as we don't unload the first SO, dlsym will find the
1654 f = 1
1655 symbol whereas we want the
1656 f = 2
1657 symbol. We therefore need to keep our own SO handle list, and
1658 try SOs in the right order. */
1659
1660 typedef
1661 struct _OpenedSO {
1662 struct _OpenedSO* next;
1663 void *handle;
1664 }
1665 OpenedSO;
1666
1667 /* A list thereof. */
1668 static OpenedSO* openedSOs = NULL;
1669
1670 static const char *
1671 internal_dlopen(const char *dll_name)
1672 {
1673 OpenedSO* o_so;
1674 void *hdl;
1675 const char *errmsg;
1676 char *errmsg_copy;
1677
1678 // omitted: RTLD_NOW
1679 // see http://www.haskell.org/pipermail/cvs-ghc/2007-September/038570.html
1680 IF_DEBUG(linker,
1681 debugBelch("internal_dlopen: dll_name = '%s'\n", dll_name));
1682
1683 //-------------- Begin critical section ------------------
1684 // This critical section is necessary because dlerror() is not
1685 // required to be reentrant (see POSIX -- IEEE Std 1003.1-2008)
1686 // Also, the error message returned must be copied to preserve it
1687 // (see POSIX also)
1688
1689 ACQUIRE_LOCK(&dl_mutex);
1690 hdl = dlopen(dll_name, RTLD_LAZY | RTLD_GLOBAL);
1691
1692 errmsg = NULL;
1693 if (hdl == NULL) {
1694 /* dlopen failed; return a ptr to the error msg. */
1695 errmsg = dlerror();
1696 if (errmsg == NULL) errmsg = "addDLL: unknown error";
1697 errmsg_copy = stgMallocBytes(strlen(errmsg)+1, "addDLL");
1698 strcpy(errmsg_copy, errmsg);
1699 errmsg = errmsg_copy;
1700 }
1701 o_so = stgMallocBytes(sizeof(OpenedSO), "addDLL");
1702 o_so->handle = hdl;
1703 o_so->next = openedSOs;
1704 openedSOs = o_so;
1705
1706 RELEASE_LOCK(&dl_mutex);
1707 //--------------- End critical section -------------------
1708
1709 return errmsg;
1710 }
1711
1712 static void *
1713 internal_dlsym(void *hdl, const char *symbol) {
1714 OpenedSO* o_so;
1715 void *v;
1716
1717 // We acquire dl_mutex as concurrent dl* calls may alter dlerror
1718 ACQUIRE_LOCK(&dl_mutex);
1719 dlerror();
1720 for (o_so = openedSOs; o_so != NULL; o_so = o_so->next) {
1721 v = dlsym(o_so->handle, symbol);
1722 if (dlerror() == NULL) {
1723 RELEASE_LOCK(&dl_mutex);
1724 return v;
1725 }
1726 }
1727 v = dlsym(hdl, symbol);
1728 RELEASE_LOCK(&dl_mutex);
1729 return v;
1730 }
1731 # endif
1732
1733 const char *
1734 addDLL( pathchar *dll_name )
1735 {
1736 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1737 /* ------------------- ELF DLL loader ------------------- */
1738
1739 #define NMATCH 5
1740 regmatch_t match[NMATCH];
1741 const char *errmsg;
1742 FILE* fp;
1743 size_t match_length;
1744 #define MAXLINE 1000
1745 char line[MAXLINE];
1746 int result;
1747
1748 initLinker();
1749
1750 IF_DEBUG(linker, debugBelch("addDLL: dll_name = '%s'\n", dll_name));
1751 errmsg = internal_dlopen(dll_name);
1752
1753 if (errmsg == NULL) {
1754 return NULL;
1755 }
1756
1757 // GHC Trac ticket #2615
1758 // On some systems (e.g., Gentoo Linux) dynamic files (e.g. libc.so)
1759 // contain linker scripts rather than ELF-format object code. This
1760 // code handles the situation by recognizing the real object code
1761 // file name given in the linker script.
1762 //
1763 // If an "invalid ELF header" error occurs, it is assumed that the
1764 // .so file contains a linker script instead of ELF object code.
1765 // In this case, the code looks for the GROUP ( ... ) linker
1766 // directive. If one is found, the first file name inside the
1767 // parentheses is treated as the name of a dynamic library and the
1768 // code attempts to dlopen that file. If this is also unsuccessful,
1769 // an error message is returned.
1770
1771 // see if the error message is due to an invalid ELF header
1772 IF_DEBUG(linker, debugBelch("errmsg = '%s'\n", errmsg));
1773 result = regexec(&re_invalid, errmsg, (size_t) NMATCH, match, 0);
1774 IF_DEBUG(linker, debugBelch("result = %i\n", result));
1775 if (result == 0) {
1776 // success -- try to read the named file as a linker script
1777 match_length = (size_t) stg_min((match[1].rm_eo - match[1].rm_so),
1778 MAXLINE-1);
1779 strncpy(line, (errmsg+(match[1].rm_so)),match_length);
1780 line[match_length] = '\0'; // make sure string is null-terminated
1781 IF_DEBUG(linker, debugBelch ("file name = '%s'\n", line));
1782 if ((fp = fopen(line, "r")) == NULL) {
1783 return errmsg; // return original error if open fails
1784 }
1785 // try to find a GROUP or INPUT ( ... ) command
1786 while (fgets(line, MAXLINE, fp) != NULL) {
1787 IF_DEBUG(linker, debugBelch("input line = %s", line));
1788 if (regexec(&re_realso, line, (size_t) NMATCH, match, 0) == 0) {
1789 // success -- try to dlopen the first named file
1790 IF_DEBUG(linker, debugBelch("match%s\n",""));
1791 line[match[2].rm_eo] = '\0';
1792 errmsg = internal_dlopen(line+match[2].rm_so);
1793 break;
1794 }
1795 // if control reaches here, no GROUP or INPUT ( ... ) directive
1796 // was found and the original error message is returned to the
1797 // caller
1798 }
1799 fclose(fp);
1800 }
1801 return errmsg;
1802
1803 # elif defined(OBJFORMAT_PEi386)
1804 /* ------------------- Win32 DLL loader ------------------- */
1805
1806 pathchar* buf;
1807 OpenedDLL* o_dll;
1808 HINSTANCE instance;
1809
1810 initLinker();
1811
1812 /* debugBelch("\naddDLL; dll_name = `%s'\n", dll_name); */
1813
1814 /* See if we've already got it, and ignore if so. */
1815 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
1816 if (0 == pathcmp(o_dll->name, dll_name))
1817 return NULL;
1818 }
1819
1820 /* The file name has no suffix (yet) so that we can try
1821 both foo.dll and foo.drv
1822
1823 The documentation for LoadLibrary says:
1824 If no file name extension is specified in the lpFileName
1825 parameter, the default library extension .dll is
1826 appended. However, the file name string can include a trailing
1827 point character (.) to indicate that the module name has no
1828 extension. */
1829
1830 buf = stgMallocBytes((pathlen(dll_name) + 10) * sizeof(wchar_t), "addDLL");
1831 swprintf(buf, L"%s.DLL", dll_name);
1832 instance = LoadLibraryW(buf);
1833 if (instance == NULL) {
1834 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1835 // KAA: allow loading of drivers (like winspool.drv)
1836 swprintf(buf, L"%s.DRV", dll_name);
1837 instance = LoadLibraryW(buf);
1838 if (instance == NULL) {
1839 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1840 // #1883: allow loading of unix-style libfoo.dll DLLs
1841 swprintf(buf, L"lib%s.DLL", dll_name);
1842 instance = LoadLibraryW(buf);
1843 if (instance == NULL) {
1844 goto error;
1845 }
1846 }
1847 }
1848 stgFree(buf);
1849
1850 /* Add this DLL to the list of DLLs in which to search for symbols. */
1851 o_dll = stgMallocBytes( sizeof(OpenedDLL), "addDLL" );
1852 o_dll->name = pathdup(dll_name);
1853 o_dll->instance = instance;
1854 o_dll->next = opened_dlls;
1855 opened_dlls = o_dll;
1856
1857 return NULL;
1858
1859 error:
1860 stgFree(buf);
1861 sysErrorBelch("%" PATH_FMT, dll_name);
1862
1863 /* LoadLibrary failed; return a ptr to the error msg. */
1864 return "addDLL: could not load DLL";
1865
1866 # else
1867 barf("addDLL: not implemented on this platform");
1868 # endif
1869 }
1870
1871 /* -----------------------------------------------------------------------------
1872 * insert a stable symbol in the hash table
1873 */
1874
1875 void
1876 insertStableSymbol(pathchar* obj_name, char* key, StgPtr p)
1877 {
1878 ghciInsertStrHashTable(obj_name, stablehash, key, getStablePtr(p));
1879 }
1880
1881
1882 /* -----------------------------------------------------------------------------
1883 * insert a symbol in the hash table
1884 */
1885 void
1886 insertSymbol(pathchar* obj_name, char* key, void* data)
1887 {
1888 ghciInsertStrHashTable(obj_name, symhash, key, data);
1889 }
1890
1891 /* -----------------------------------------------------------------------------
1892 * lookup a symbol in the hash table
1893 */
1894 void *
1895 lookupSymbol( char *lbl )
1896 {
1897 void *val;
1898 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s\n", lbl));
1899 initLinker() ;
1900 ASSERT(symhash != NULL);
1901 val = lookupStrHashTable(symhash, lbl);
1902
1903 if (val == NULL) {
1904 IF_DEBUG(linker, debugBelch("lookupSymbol: symbol not found\n"));
1905 # if defined(OBJFORMAT_ELF)
1906 return internal_dlsym(dl_prog_handle, lbl);
1907 # elif defined(OBJFORMAT_MACHO)
1908 # if HAVE_DLFCN_H
1909 /* On OS X 10.3 and later, we use dlsym instead of the old legacy
1910 interface.
1911
1912 HACK: On OS X, all symbols are prefixed with an underscore.
1913 However, dlsym wants us to omit the leading underscore from the
1914 symbol name -- the dlsym routine puts it back on before searching
1915 for the symbol. For now, we simply strip it off here (and ONLY
1916 here).
1917 */
1918 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s with dlsym\n", lbl));
1919 ASSERT(lbl[0] == '_');
1920 return internal_dlsym(dl_prog_handle, lbl + 1);
1921 # else
1922 if (NSIsSymbolNameDefined(lbl)) {
1923 NSSymbol symbol = NSLookupAndBindSymbol(lbl);
1924 return NSAddressOfSymbol(symbol);
1925 } else {
1926 return NULL;
1927 }
1928 # endif /* HAVE_DLFCN_H */
1929 # elif defined(OBJFORMAT_PEi386)
1930 void* sym;
1931
1932 sym = lookupSymbolInDLLs((unsigned char*)lbl);
1933 if (sym != NULL) { return sym; };
1934
1935 // Also try looking up the symbol without the @N suffix. Some
1936 // DLLs have the suffixes on their symbols, some don't.
1937 zapTrailingAtSign ( (unsigned char*)lbl );
1938 sym = lookupSymbolInDLLs((unsigned char*)lbl);
1939 if (sym != NULL) { return sym; };
1940 return NULL;
1941
1942 # else
1943 ASSERT(2+2 == 5);
1944 return NULL;
1945 # endif
1946 } else {
1947 IF_DEBUG(linker, debugBelch("lookupSymbol: value of %s is %p\n", lbl, val));
1948 return val;
1949 }
1950 }
1951
1952 /* -----------------------------------------------------------------------------
1953 Create a StablePtr for a foreign export. This is normally called by
1954 a C function with __attribute__((constructor)), which is generated
1955 by GHC and linked into the module.
1956
1957 If the object code is being loaded dynamically, then we remember
1958 which StablePtrs were allocated by the constructors and free them
1959 again in unloadObj().
1960 -------------------------------------------------------------------------- */
1961
1962 static ObjectCode *loading_obj = NULL;
1963
1964 StgStablePtr foreignExportStablePtr (StgPtr p)
1965 {
1966 ForeignExportStablePtr *fe_sptr;
1967 StgStablePtr *sptr;
1968
1969 sptr = getStablePtr(p);
1970
1971 if (loading_obj != NULL) {
1972 fe_sptr = stgMallocBytes(sizeof(ForeignExportStablePtr),
1973 "foreignExportStablePtr");
1974 fe_sptr->stable_ptr = sptr;
1975 fe_sptr->next = loading_obj->stable_ptrs;
1976 loading_obj->stable_ptrs = fe_sptr;
1977 }
1978
1979 return sptr;
1980 }
1981
1982
1983 /* -----------------------------------------------------------------------------
1984 * Debugging aid: look in GHCi's object symbol tables for symbols
1985 * within DELTA bytes of the specified address, and show their names.
1986 */
1987 #ifdef DEBUG
1988 void ghci_enquire ( char* addr );
1989
1990 void ghci_enquire ( char* addr )
1991 {
1992 int i;
1993 char* sym;
1994 char* a;
1995 const int DELTA = 64;
1996 ObjectCode* oc;
1997
1998 initLinker();
1999
2000 for (oc = objects; oc; oc = oc->next) {
2001 for (i = 0; i < oc->n_symbols; i++) {
2002 sym = oc->symbols[i];
2003 if (sym == NULL) continue;
2004 a = NULL;
2005 if (a == NULL) {
2006 a = lookupStrHashTable(symhash, sym);
2007 }
2008 if (a == NULL) {
2009 // debugBelch("ghci_enquire: can't find %s\n", sym);
2010 }
2011 else if (addr-DELTA <= a && a <= addr+DELTA) {
2012 debugBelch("%p + %3d == `%s'\n", addr, (int)(a - addr), sym);
2013 }
2014 }
2015 }
2016 }
2017 #endif
2018
2019 #ifdef USE_MMAP
2020 #define ROUND_UP(x,size) ((x + size - 1) & ~(size - 1))
2021
2022 static void *
2023 mmapForLinker (size_t bytes, nat flags, int fd)
2024 {
2025 void *map_addr = NULL;
2026 void *result;
2027 int pagesize, size;
2028 static nat fixed = 0;
2029
2030 IF_DEBUG(linker, debugBelch("mmapForLinker: start\n"));
2031 pagesize = getpagesize();
2032 size = ROUND_UP(bytes, pagesize);
2033
2034 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2035 mmap_again:
2036
2037 if (mmap_32bit_base != 0) {
2038 map_addr = mmap_32bit_base;
2039 }
2040 #endif
2041
2042 IF_DEBUG(linker, debugBelch("mmapForLinker: \tprotection %#0x\n", PROT_EXEC | PROT_READ | PROT_WRITE));
2043 IF_DEBUG(linker, debugBelch("mmapForLinker: \tflags %#0x\n", MAP_PRIVATE | TRY_MAP_32BIT | fixed | flags));
2044 result = mmap(map_addr, size, PROT_EXEC|PROT_READ|PROT_WRITE,
2045 MAP_PRIVATE|TRY_MAP_32BIT|fixed|flags, fd, 0);
2046
2047 if (result == MAP_FAILED) {
2048 sysErrorBelch("mmap %" FMT_Word " bytes at %p",(W_)size,map_addr);
2049 errorBelch("Try specifying an address with +RTS -xm<addr> -RTS");
2050 stg_exit(EXIT_FAILURE);
2051 }
2052
2053 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2054 if (mmap_32bit_base != 0) {
2055 if (result == map_addr) {
2056 mmap_32bit_base = (StgWord8*)map_addr + size;
2057 } else {
2058 if ((W_)result > 0x80000000) {
2059 // oops, we were given memory over 2Gb
2060 #if defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS)
2061 // Some platforms require MAP_FIXED. This is normally
2062 // a bad idea, because MAP_FIXED will overwrite
2063 // existing mappings.
2064 munmap(result,size);
2065 fixed = MAP_FIXED;
2066 goto mmap_again;
2067 #else
2068 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);
2069 #endif
2070 } else {
2071 // hmm, we were given memory somewhere else, but it's
2072 // still under 2Gb so we can use it. Next time, ask
2073 // for memory right after the place we just got some
2074 mmap_32bit_base = (StgWord8*)result + size;
2075 }
2076 }
2077 } else {
2078 if ((W_)result > 0x80000000) {
2079 // oops, we were given memory over 2Gb
2080 // ... try allocating memory somewhere else?;
2081 debugTrace(DEBUG_linker,"MAP_32BIT didn't work; gave us %lu bytes at 0x%p", bytes, result);
2082 munmap(result, size);
2083
2084 // Set a base address and try again... (guess: 1Gb)
2085 mmap_32bit_base = (void*)0x40000000;
2086 goto mmap_again;
2087 }
2088 }
2089 #endif
2090
2091 IF_DEBUG(linker, debugBelch("mmapForLinker: mapped %" FMT_Word " bytes starting at %p\n", (W_)size, result));
2092 IF_DEBUG(linker, debugBelch("mmapForLinker: done\n"));
2093 return result;
2094 }
2095 #endif // USE_MMAP
2096
2097
2098 void freeObjectCode (ObjectCode *oc)
2099 {
2100 #ifdef USE_MMAP
2101 int pagesize, size, r;
2102
2103 pagesize = getpagesize();
2104 size = ROUND_UP(oc->fileSize, pagesize);
2105
2106 r = munmap(oc->image, size);
2107 if (r == -1) {
2108 sysErrorBelch("munmap");
2109 }
2110
2111 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2112 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2113 if (!USE_CONTIGUOUS_MMAP)
2114 {
2115 munmap(oc->symbol_extras,
2116 ROUND_UP(sizeof(SymbolExtra) * oc->n_symbol_extras, pagesize));
2117 }
2118 #endif
2119 #endif
2120
2121 #else
2122
2123 stgFree(oc->image);
2124
2125 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2126 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2127 stgFree(oc->symbol_extras);
2128 #endif
2129 #endif
2130
2131 #endif
2132
2133 stgFree(oc->fileName);
2134 stgFree(oc->archiveMemberName);
2135 stgFree(oc);
2136 }
2137
2138
2139 static ObjectCode*
2140 mkOc( pathchar *path, char *image, int imageSize,
2141 char *archiveMemberName
2142 #ifndef USE_MMAP
2143 #ifdef darwin_HOST_OS
2144 , int misalignment
2145 #endif
2146 #endif
2147 ) {
2148 ObjectCode* oc;
2149
2150 IF_DEBUG(linker, debugBelch("mkOc: start\n"));
2151 oc = stgMallocBytes(sizeof(ObjectCode), "loadArchive(oc)");
2152
2153 # if defined(OBJFORMAT_ELF)
2154 oc->formatName = "ELF";
2155 # elif defined(OBJFORMAT_PEi386)
2156 oc->formatName = "PEi386";
2157 # elif defined(OBJFORMAT_MACHO)
2158 oc->formatName = "Mach-O";
2159 # else
2160 stgFree(oc);
2161 barf("loadObj: not implemented on this platform");
2162 # endif
2163
2164 oc->image = image;
2165 oc->fileName = pathdup(path);
2166
2167 if (archiveMemberName) {
2168 oc->archiveMemberName = stgMallocBytes( strlen(archiveMemberName)+1, "loadObj" );
2169 strcpy(oc->archiveMemberName, archiveMemberName);
2170 }
2171 else {
2172 oc->archiveMemberName = NULL;
2173 }
2174
2175 oc->fileSize = imageSize;
2176 oc->symbols = NULL;
2177 oc->sections = NULL;
2178 oc->proddables = NULL;
2179 oc->stable_ptrs = NULL;
2180
2181 #ifndef USE_MMAP
2182 #ifdef darwin_HOST_OS
2183 oc->misalignment = misalignment;
2184 #endif
2185 #endif
2186
2187 /* chain it onto the list of objects */
2188 oc->next = objects;
2189 objects = oc;
2190
2191 IF_DEBUG(linker, debugBelch("mkOc: done\n"));
2192 return oc;
2193 }
2194
2195 HsInt
2196 loadArchive( pathchar *path )
2197 {
2198 ObjectCode* oc;
2199 char *image;
2200 int memberSize;
2201 FILE *f;
2202 int n;
2203 size_t thisFileNameSize;
2204 char *fileName;
2205 size_t fileNameSize;
2206 int isObject, isGnuIndex;
2207 char tmp[20];
2208 char *gnuFileIndex;
2209 int gnuFileIndexSize;
2210 #if defined(darwin_HOST_OS)
2211 int i;
2212 uint32_t nfat_arch, nfat_offset, cputype, cpusubtype;
2213 #if defined(i386_HOST_ARCH)
2214 const uint32_t mycputype = CPU_TYPE_X86;
2215 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_ALL;
2216 #elif defined(x86_64_HOST_ARCH)
2217 const uint32_t mycputype = CPU_TYPE_X86_64;
2218 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_64_ALL;
2219 #elif defined(powerpc_HOST_ARCH)
2220 const uint32_t mycputype = CPU_TYPE_POWERPC;
2221 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2222 #elif defined(powerpc64_HOST_ARCH)
2223 const uint32_t mycputype = CPU_TYPE_POWERPC64;
2224 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2225 #else
2226 #error Unknown Darwin architecture
2227 #endif
2228 #if !defined(USE_MMAP)
2229 int misalignment;
2230 #endif
2231 #endif
2232
2233 IF_DEBUG(linker, debugBelch("loadArchive: start\n"));
2234 IF_DEBUG(linker, debugBelch("loadArchive: Loading archive `%" PATH_FMT" '\n", path));
2235
2236 gnuFileIndex = NULL;
2237 gnuFileIndexSize = 0;
2238
2239 fileNameSize = 32;
2240 fileName = stgMallocBytes(fileNameSize, "loadArchive(fileName)");
2241
2242 f = pathopen(path, WSTR("rb"));
2243 if (!f)
2244 barf("loadObj: can't read `%s'", path);
2245
2246 /* Check if this is an archive by looking for the magic "!<arch>\n"
2247 * string. Usually, if this fails, we barf and quit. On Darwin however,
2248 * we may have a fat archive, which contains archives for more than
2249 * one architecture. Fat archives start with the magic number 0xcafebabe,
2250 * always stored big endian. If we find a fat_header, we scan through
2251 * the fat_arch structs, searching through for one for our host
2252 * architecture. If a matching struct is found, we read the offset
2253 * of our archive data (nfat_offset) and seek forward nfat_offset bytes
2254 * from the start of the file.
2255 *
2256 * A subtlety is that all of the members of the fat_header and fat_arch
2257 * structs are stored big endian, so we need to call byte order
2258 * conversion functions.
2259 *
2260 * If we find the appropriate architecture in a fat archive, we gobble
2261 * its magic "!<arch>\n" string and continue processing just as if
2262 * we had a single architecture archive.
2263 */
2264
2265 n = fread ( tmp, 1, 8, f );
2266 if (n != 8)
2267 barf("loadArchive: Failed reading header from `%s'", path);
2268 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2269
2270 #if defined(darwin_HOST_OS)
2271 /* Not a standard archive, look for a fat archive magic number: */
2272 if (ntohl(*(uint32_t *)tmp) == FAT_MAGIC) {
2273 nfat_arch = ntohl(*(uint32_t *)(tmp + 4));
2274 IF_DEBUG(linker, debugBelch("loadArchive: found a fat archive containing %d architectures\n", nfat_arch));
2275 nfat_offset = 0;
2276
2277 for (i = 0; i < (int)nfat_arch; i++) {
2278 /* search for the right arch */
2279 n = fread( tmp, 1, 20, f );
2280 if (n != 8)
2281 barf("loadArchive: Failed reading arch from `%s'", path);
2282 cputype = ntohl(*(uint32_t *)tmp);
2283 cpusubtype = ntohl(*(uint32_t *)(tmp + 4));
2284
2285 if (cputype == mycputype && cpusubtype == mycpusubtype) {
2286 IF_DEBUG(linker, debugBelch("loadArchive: found my archive in a fat archive\n"));
2287 nfat_offset = ntohl(*(uint32_t *)(tmp + 8));
2288 break;
2289 }
2290 }
2291
2292 if (nfat_offset == 0) {
2293 barf ("loadArchive: searched %d architectures, but no host arch found", (int)nfat_arch);
2294 }
2295 else {
2296 n = fseek( f, nfat_offset, SEEK_SET );
2297 if (n != 0)
2298 barf("loadArchive: Failed to seek to arch in `%s'", path);
2299 n = fread ( tmp, 1, 8, f );
2300 if (n != 8)
2301 barf("loadArchive: Failed reading header from `%s'", path);
2302 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2303 barf("loadArchive: couldn't find archive in `%s' at offset %d", path, nfat_offset);
2304 }
2305 }
2306 }
2307 else {
2308 barf("loadArchive: Neither an archive, nor a fat archive: `%s'", path);
2309 }
2310
2311 #else
2312 barf("loadArchive: Not an archive: `%s'", path);
2313 #endif
2314 }
2315
2316 IF_DEBUG(linker, debugBelch("loadArchive: loading archive contents\n"));
2317
2318 while(1) {
2319 n = fread ( fileName, 1, 16, f );
2320 if (n != 16) {
2321 if (feof(f)) {
2322 IF_DEBUG(linker, debugBelch("loadArchive: EOF while reading from '%" PATH_FMT "'\n", path));
2323 break;
2324 }
2325 else {
2326 barf("loadArchive: Failed reading file name from `%s'", path);
2327 }
2328 }
2329
2330 #if defined(darwin_HOST_OS)
2331 if (strncmp(fileName, "!<arch>\n", 8) == 0) {
2332 IF_DEBUG(linker, debugBelch("loadArchive: found the start of another archive, breaking\n"));
2333 break;
2334 }
2335 #endif
2336
2337 n = fread ( tmp, 1, 12, f );
2338 if (n != 12)
2339 barf("loadArchive: Failed reading mod time from `%s'", path);
2340 n = fread ( tmp, 1, 6, f );
2341 if (n != 6)
2342 barf("loadArchive: Failed reading owner from `%s'", path);
2343 n = fread ( tmp, 1, 6, f );
2344 if (n != 6)
2345 barf("loadArchive: Failed reading group from `%s'", path);
2346 n = fread ( tmp, 1, 8, f );
2347 if (n != 8)
2348 barf("loadArchive: Failed reading mode from `%s'", path);
2349 n = fread ( tmp, 1, 10, f );
2350 if (n != 10)
2351 barf("loadArchive: Failed reading size from `%s'", path);
2352 tmp[10] = '\0';
2353 for (n = 0; isdigit(tmp[n]); n++);
2354 tmp[n] = '\0';
2355 memberSize = atoi(tmp);
2356
2357 IF_DEBUG(linker, debugBelch("loadArchive: size of this archive member is %d\n", memberSize));
2358 n = fread ( tmp, 1, 2, f );
2359 if (n != 2)
2360 barf("loadArchive: Failed reading magic from `%s'", path);
2361 if (strncmp(tmp, "\x60\x0A", 2) != 0)
2362 barf("loadArchive: Failed reading magic from `%s' at %ld. Got %c%c",
2363 path, ftell(f), tmp[0], tmp[1]);
2364
2365 isGnuIndex = 0;
2366 /* Check for BSD-variant large filenames */
2367 if (0 == strncmp(fileName, "#1/", 3)) {
2368 fileName[16] = '\0';
2369 if (isdigit(fileName[3])) {
2370 for (n = 4; isdigit(fileName[n]); n++);
2371 fileName[n] = '\0';
2372 thisFileNameSize = atoi(fileName + 3);
2373 memberSize -= thisFileNameSize;
2374 if (thisFileNameSize >= fileNameSize) {
2375 /* Double it to avoid potentially continually
2376 increasing it by 1 */
2377 fileNameSize = thisFileNameSize * 2;
2378 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2379 }
2380 n = fread ( fileName, 1, thisFileNameSize, f );
2381 if (n != (int)thisFileNameSize) {
2382 barf("loadArchive: Failed reading filename from `%s'",
2383 path);
2384 }
2385 fileName[thisFileNameSize] = 0;
2386
2387 /* On OS X at least, thisFileNameSize is the size of the
2388 fileName field, not the length of the fileName
2389 itself. */
2390 thisFileNameSize = strlen(fileName);
2391 }
2392 else {
2393 barf("loadArchive: BSD-variant filename size not found while reading filename from `%s'", path);
2394 }
2395 }
2396 /* Check for GNU file index file */
2397 else if (0 == strncmp(fileName, "//", 2)) {
2398 fileName[0] = '\0';
2399 thisFileNameSize = 0;
2400 isGnuIndex = 1;
2401 }
2402 /* Check for a file in the GNU file index */
2403 else if (fileName[0] == '/') {
2404 if (isdigit(fileName[1])) {
2405 int i;
2406
2407 for (n = 2; isdigit(fileName[n]); n++);
2408 fileName[n] = '\0';
2409 n = atoi(fileName + 1);
2410
2411 if (gnuFileIndex == NULL) {
2412 barf("loadArchive: GNU-variant filename without an index while reading from `%s'", path);
2413 }
2414 if (n < 0 || n > gnuFileIndexSize) {
2415 barf("loadArchive: GNU-variant filename offset %d out of range [0..%d] while reading filename from `%s'", n, gnuFileIndexSize, path);
2416 }
2417 if (n != 0 && gnuFileIndex[n - 1] != '\n') {
2418 barf("loadArchive: GNU-variant filename offset %d invalid (range [0..%d]) while reading filename from `%s'", n, gnuFileIndexSize, path);
2419 }
2420 for (i = n; gnuFileIndex[i] != '/'; i++);
2421 thisFileNameSize = i - n;
2422 if (thisFileNameSize >= fileNameSize) {
2423 /* Double it to avoid potentially continually
2424 increasing it by 1 */
2425 fileNameSize = thisFileNameSize * 2;
2426 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2427 }
2428 memcpy(fileName, gnuFileIndex + n, thisFileNameSize);
2429 fileName[thisFileNameSize] = '\0';
2430 }
2431 else if (fileName[1] == ' ') {
2432 fileName[0] = '\0';
2433 thisFileNameSize = 0;
2434 }
2435 else {
2436 barf("loadArchive: GNU-variant filename offset not found while reading filename from `%s'", path);
2437 }
2438 }
2439 /* Finally, the case where the filename field actually contains
2440 the filename */
2441 else {
2442 /* GNU ar terminates filenames with a '/', this allowing
2443 spaces in filenames. So first look to see if there is a
2444 terminating '/'. */
2445 for (thisFileNameSize = 0;
2446 thisFileNameSize < 16;
2447 thisFileNameSize++) {
2448 if (fileName[thisFileNameSize] == '/') {
2449 fileName[thisFileNameSize] = '\0';
2450 break;
2451 }
2452 }
2453 /* If we didn't find a '/', then a space teminates the
2454 filename. Note that if we don't find one, then
2455 thisFileNameSize ends up as 16, and we already have the
2456 '\0' at the end. */
2457 if (thisFileNameSize == 16) {
2458 for (thisFileNameSize = 0;
2459 thisFileNameSize < 16;
2460 thisFileNameSize++) {
2461 if (fileName[thisFileNameSize] == ' ') {
2462 fileName[thisFileNameSize] = '\0';
2463 break;
2464 }
2465 }
2466 }
2467 }
2468
2469 IF_DEBUG(linker,
2470 debugBelch("loadArchive: Found member file `%s'\n", fileName));
2471
2472 isObject = thisFileNameSize >= 2
2473 && fileName[thisFileNameSize - 2] == '.'
2474 && fileName[thisFileNameSize - 1] == 'o';
2475
2476 IF_DEBUG(linker, debugBelch("loadArchive: \tthisFileNameSize = %d\n", (int)thisFileNameSize));
2477 IF_DEBUG(linker, debugBelch("loadArchive: \tisObject = %d\n", isObject));
2478
2479 if (isObject) {
2480 char *archiveMemberName;
2481
2482 IF_DEBUG(linker, debugBelch("loadArchive: Member is an object file...loading...\n"));
2483
2484 /* We can't mmap from the archive directly, as object
2485 files need to be 8-byte aligned but files in .ar
2486 archives are 2-byte aligned. When possible we use mmap
2487 to get some anonymous memory, as on 64-bit platforms if
2488 we use malloc then we can be given memory above 2^32.
2489 In the mmap case we're probably wasting lots of space;
2490 we could do better. */
2491 #if defined(USE_MMAP)
2492 image = mmapForLinker(memberSize, MAP_ANONYMOUS, -1);
2493 #elif defined(mingw32_HOST_OS)
2494 // TODO: We would like to use allocateExec here, but allocateExec
2495 // cannot currently allocate blocks large enough.
2496 {
2497 int offset;
2498 #if defined(x86_64_HOST_ARCH)
2499 /* We get back 8-byte aligned memory (is that guaranteed?), but
2500 the offsets to the sections within the file are all 4 mod 8
2501 (is that guaranteed?). We therefore need to offset the image
2502 by 4, so that all the pointers are 8-byte aligned, so that
2503 pointer tagging works. */
2504 offset = 4;
2505 #else
2506 offset = 0;
2507 #endif
2508 image = VirtualAlloc(NULL, memberSize + offset,
2509 MEM_RESERVE | MEM_COMMIT,
2510 PAGE_EXECUTE_READWRITE);
2511 image += offset;
2512 }
2513 #elif defined(darwin_HOST_OS)
2514 /* See loadObj() */
2515 misalignment = machoGetMisalignment(f);
2516 image = stgMallocBytes(memberSize + misalignment, "loadArchive(image)");
2517 image += misalignment;
2518 #else
2519 image = stgMallocBytes(memberSize, "loadArchive(image)");
2520 #endif
2521 n = fread ( image, 1, memberSize, f );
2522 if (n != memberSize) {
2523 barf("loadArchive: error whilst reading `%s'", path);
2524 }
2525
2526 archiveMemberName = stgMallocBytes(pathlen(path) + thisFileNameSize + 3,
2527 "loadArchive(file)");
2528 sprintf(archiveMemberName, "%" PATH_FMT "(%.*s)",
2529 path, (int)thisFileNameSize, fileName);
2530
2531 oc = mkOc(path, image, memberSize, archiveMemberName
2532 #ifndef USE_MMAP
2533 #ifdef darwin_HOST_OS
2534 , misalignment
2535 #endif
2536 #endif
2537 );
2538
2539 stgFree(archiveMemberName);
2540
2541 if (0 == loadOc(oc)) {
2542 stgFree(fileName);
2543 return 0;
2544 }
2545 }
2546 else if (isGnuIndex) {
2547 if (gnuFileIndex != NULL) {
2548 barf("loadArchive: GNU-variant index found, but already have an index, while reading filename from `%s'", path);
2549 }
2550 IF_DEBUG(linker, debugBelch("loadArchive: Found GNU-variant file index\n"));
2551 #ifdef USE_MMAP
2552 gnuFileIndex = mmapForLinker(memberSize + 1, MAP_ANONYMOUS, -1);
2553 #else
2554 gnuFileIndex = stgMallocBytes(memberSize + 1, "loadArchive(image)");
2555 #endif
2556 n = fread ( gnuFileIndex, 1, memberSize, f );
2557 if (n != memberSize) {
2558 barf("loadArchive: error whilst reading `%s'", path);
2559 }
2560 gnuFileIndex[memberSize] = '/';
2561 gnuFileIndexSize = memberSize;
2562 }
2563 else {
2564 IF_DEBUG(linker, debugBelch("loadArchive: '%s' does not appear to be an object file\n", fileName));
2565 n = fseek(f, memberSize, SEEK_CUR);
2566 if (n != 0)
2567 barf("loadArchive: error whilst seeking by %d in `%s'",
2568 memberSize, path);
2569 }
2570
2571 /* .ar files are 2-byte aligned */
2572 if (memberSize % 2) {
2573 IF_DEBUG(linker, debugBelch("loadArchive: trying to read one pad byte\n"));
2574 n = fread ( tmp, 1, 1, f );
2575 if (n != 1) {
2576 if (feof(f)) {
2577 IF_DEBUG(linker, debugBelch("loadArchive: found EOF while reading one pad byte\n"));
2578 break;
2579 }
2580 else {
2581 barf("loadArchive: Failed reading padding from `%s'", path);
2582 }
2583 }
2584 IF_DEBUG(linker, debugBelch("loadArchive: successfully read one pad byte\n"));
2585 }
2586 IF_DEBUG(linker, debugBelch("loadArchive: reached end of archive loading while loop\n"));
2587 }
2588
2589 fclose(f);
2590
2591 stgFree(fileName);
2592 if (gnuFileIndex != NULL) {
2593 #ifdef USE_MMAP
2594 munmap(gnuFileIndex, gnuFileIndexSize + 1);
2595 #else
2596 stgFree(gnuFileIndex);
2597 #endif
2598 }
2599
2600 IF_DEBUG(linker, debugBelch("loadArchive: done\n"));
2601 return 1;
2602 }
2603
2604 /* -----------------------------------------------------------------------------
2605 * Load an obj (populate the global symbol table, but don't resolve yet)
2606 *
2607 * Returns: 1 if ok, 0 on error.
2608 */
2609 HsInt
2610 loadObj( pathchar *path )
2611 {
2612 ObjectCode* oc;
2613 char *image;
2614 int fileSize;
2615 struct_stat st;
2616 int r;
2617 #ifdef USE_MMAP
2618 int fd;
2619 #else
2620 FILE *f;
2621 # if defined(darwin_HOST_OS)
2622 int misalignment;
2623 # endif
2624 #endif
2625 IF_DEBUG(linker, debugBelch("loadObj %" PATH_FMT "\n", path));
2626
2627 initLinker();
2628
2629 /* debugBelch("loadObj %s\n", path ); */
2630
2631 /* Check that we haven't already loaded this object.
2632 Ignore requests to load multiple times */
2633 {
2634 ObjectCode *o;
2635 int is_dup = 0;
2636 for (o = objects; o; o = o->next) {
2637 if (0 == pathcmp(o->fileName, path)) {
2638 is_dup = 1;
2639 break; /* don't need to search further */
2640 }
2641 }
2642 if (is_dup) {
2643 IF_DEBUG(linker, debugBelch(
2644 "GHCi runtime linker: warning: looks like you're trying to load the\n"
2645 "same object file twice:\n"
2646 " %" PATH_FMT "\n"
2647 "GHCi will ignore this, but be warned.\n"
2648 , path));
2649 return 1; /* success */
2650 }
2651 }
2652
2653 r = pathstat(path, &st);
2654 if (r == -1) {
2655 IF_DEBUG(linker, debugBelch("File doesn't exist\n"));
2656 return 0;
2657 }
2658
2659 fileSize = st.st_size;
2660
2661 #ifdef USE_MMAP
2662 /* On many architectures malloc'd memory isn't executable, so we need to use mmap. */
2663
2664 #if defined(openbsd_HOST_OS)
2665 fd = open(path, O_RDONLY, S_IRUSR);
2666 #else
2667 fd = open(path, O_RDONLY);
2668 #endif
2669 if (fd == -1)
2670 barf("loadObj: can't open `%s'", path);
2671
2672 image = mmapForLinker(fileSize, 0, fd);
2673
2674 close(fd);
2675
2676 #else /* !USE_MMAP */
2677 /* load the image into memory */
2678 f = pathopen(path, WSTR("rb"));
2679 if (!f)
2680 barf("loadObj: can't read `%" PATH_FMT "'", path);
2681
2682 # if defined(mingw32_HOST_OS)
2683 // TODO: We would like to use allocateExec here, but allocateExec
2684 // cannot currently allocate blocks large enough.
2685 {
2686 int offset;
2687 #if defined(x86_64_HOST_ARCH)
2688 /* We get back 8-byte aligned memory (is that guaranteed?), but
2689 the offsets to the sections within the file are all 4 mod 8
2690 (is that guaranteed?). We therefore need to offset the image
2691 by 4, so that all the pointers are 8-byte aligned, so that
2692 pointer tagging works. */
2693 offset = 4;
2694 #else
2695 offset = 0;
2696 #endif
2697 image = VirtualAlloc(NULL, fileSize + offset, MEM_RESERVE | MEM_COMMIT,
2698 PAGE_EXECUTE_READWRITE);
2699 image += offset;
2700 }
2701 # elif defined(darwin_HOST_OS)
2702 // In a Mach-O .o file, all sections can and will be misaligned
2703 // if the total size of the headers is not a multiple of the
2704 // desired alignment. This is fine for .o files that only serve
2705 // as input for the static linker, but it's not fine for us,
2706 // as SSE (used by gcc for floating point) and Altivec require
2707 // 16-byte alignment.
2708 // We calculate the correct alignment from the header before
2709 // reading the file, and then we misalign image on purpose so
2710 // that the actual sections end up aligned again.
2711 misalignment = machoGetMisalignment(f);
2712 image = stgMallocBytes(fileSize + misalignment, "loadObj(image)");
2713 image += misalignment;
2714 # else
2715 image = stgMallocBytes(fileSize, "loadObj(image)");
2716 # endif
2717
2718 {
2719 int n;
2720 n = fread ( image, 1, fileSize, f );
2721 if (n != fileSize)
2722 barf("loadObj: error whilst reading `%s'", path);
2723 }
2724 fclose(f);
2725 #endif /* USE_MMAP */
2726
2727 oc = mkOc(path, image, fileSize, NULL
2728 #ifndef USE_MMAP
2729 #ifdef darwin_HOST_OS
2730 , misalignment
2731 #endif
2732 #endif
2733 );
2734
2735 return loadOc(oc);
2736 }
2737
2738 static HsInt
2739 loadOc( ObjectCode* oc ) {
2740 int r;
2741
2742 IF_DEBUG(linker, debugBelch("loadOc: start\n"));
2743
2744 # if defined(OBJFORMAT_MACHO) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH))
2745 r = ocAllocateSymbolExtras_MachO ( oc );
2746 if (!r) {
2747 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_MachO failed\n"));
2748 return r;
2749 }
2750 # elif defined(OBJFORMAT_ELF) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH))
2751 r = ocAllocateSymbolExtras_ELF ( oc );
2752 if (!r) {
2753 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_ELF failed\n"));
2754 return r;
2755 }
2756 #endif
2757
2758 /* verify the in-memory image */
2759 # if defined(OBJFORMAT_ELF)
2760 r = ocVerifyImage_ELF ( oc );
2761 # elif defined(OBJFORMAT_PEi386)
2762 r = ocVerifyImage_PEi386 ( oc );
2763 # elif defined(OBJFORMAT_MACHO)
2764 r = ocVerifyImage_MachO ( oc );
2765 # else
2766 barf("loadObj: no verify method");
2767 # endif
2768 if (!r) {
2769 IF_DEBUG(linker, debugBelch("loadOc: ocVerifyImage_* failed\n"));
2770 return r;
2771 }
2772
2773 /* build the symbol list for this image */
2774 # if defined(OBJFORMAT_ELF)
2775 r = ocGetNames_ELF ( oc );
2776 # elif defined(OBJFORMAT_PEi386)
2777 r = ocGetNames_PEi386 ( oc );
2778 # elif defined(OBJFORMAT_MACHO)
2779 r = ocGetNames_MachO ( oc );
2780 # else
2781 barf("loadObj: no getNames method");
2782 # endif
2783 if (!r) {
2784 IF_DEBUG(linker, debugBelch("loadOc: ocGetNames_* failed\n"));
2785 return r;
2786 }
2787
2788 /* loaded, but not resolved yet */
2789 oc->status = OBJECT_LOADED;
2790 IF_DEBUG(linker, debugBelch("loadOc: done.\n"));
2791
2792 return 1;
2793 }
2794
2795 /* -----------------------------------------------------------------------------
2796 * resolve all the currently unlinked objects in memory
2797 *
2798 * Returns: 1 if ok, 0 on error.
2799 */
2800 HsInt
2801 resolveObjs( void )
2802 {
2803 ObjectCode *oc;
2804 int r;
2805
2806 IF_DEBUG(linker, debugBelch("resolveObjs: start\n"));
2807 initLinker();
2808
2809 for (oc = objects; oc; oc = oc->next) {
2810 if (oc->status != OBJECT_RESOLVED) {
2811 # if defined(OBJFORMAT_ELF)
2812 r = ocResolve_ELF ( oc );
2813 # elif defined(OBJFORMAT_PEi386)
2814 r = ocResolve_PEi386 ( oc );
2815 # elif defined(OBJFORMAT_MACHO)
2816 r = ocResolve_MachO ( oc );
2817 # else
2818 barf("resolveObjs: not implemented on this platform");
2819 # endif
2820 if (!r) { return r; }
2821
2822 // run init/init_array/ctors/mod_init_func
2823
2824 loading_obj = oc; // tells foreignExportStablePtr what to do
2825 #if defined(OBJFORMAT_ELF)
2826 r = ocRunInit_ELF ( oc );
2827 #elif defined(OBJFORMAT_PEi386)
2828 r = ocRunInit_PEi386 ( oc );
2829 #elif defined(OBJFORMAT_MACHO)
2830 r = ocRunInit_MachO ( oc );
2831 #else
2832 barf("resolveObjs: initializers not implemented on this platform");
2833 #endif
2834 loading_obj = NULL;
2835
2836 if (!r) { return r; }
2837
2838 oc->status = OBJECT_RESOLVED;
2839 }
2840 }
2841 IF_DEBUG(linker, debugBelch("resolveObjs: done\n"));
2842 return 1;
2843 }
2844
2845 /* -----------------------------------------------------------------------------
2846 * delete an object from the pool
2847 */
2848 HsInt
2849 unloadObj( pathchar *path )
2850 {
2851 ObjectCode *oc, *prev, *next;
2852 HsBool unloadedAnyObj = HS_BOOL_FALSE;
2853
2854 ASSERT(symhash != NULL);
2855 ASSERT(objects != NULL);
2856
2857 initLinker();
2858
2859 IF_DEBUG(linker, debugBelch("unloadObj: %" PATH_FMT "\n", path));
2860
2861 prev = NULL;
2862 for (oc = objects; oc; prev = oc, oc = next) {
2863 next = oc->next;
2864
2865 if (!pathcmp(oc->fileName,path)) {
2866
2867 /* Remove all the mappings for the symbols within this
2868 * object..
2869 */
2870 {
2871 int i;
2872 for (i = 0; i < oc->n_symbols; i++) {
2873 if (oc->symbols[i] != NULL) {
2874 removeStrHashTable(symhash, oc->symbols[i], NULL);
2875 }
2876 }
2877 }
2878
2879 if (prev == NULL) {
2880 objects = oc->next;
2881 } else {
2882 prev->next = oc->next;
2883 }
2884 oc->next = unloaded_objects;
2885 unloaded_objects = oc;
2886
2887 // The data itself and a few other bits (oc->fileName,
2888 // oc->archiveMemberName) are kept until freeObjectCode(),
2889 // which is only called when it has been determined that
2890 // it is safe to unload the object.
2891 stgFree(oc->symbols);
2892
2893 {
2894 Section *s, *nexts;
2895
2896 for (s = oc->sections; s != NULL; s = nexts) {
2897 nexts = s->next;
2898 stgFree(s);
2899 }
2900 }
2901
2902 freeProddableBlocks(oc);
2903
2904 // Release any StablePtrs that were created when this
2905 // object module was initialized.
2906 {
2907 ForeignExportStablePtr *fe_ptr, *next;
2908
2909 for (fe_ptr = oc->stable_ptrs; fe_ptr != NULL; fe_ptr = next) {
2910 next = fe_ptr->next;
2911 freeStablePtr(fe_ptr->stable_ptr);
2912 stgFree(fe_ptr);
2913 }
2914 }
2915
2916 oc->status = OBJECT_UNLOADED;
2917
2918 /* This could be a member of an archive so continue
2919 * unloading other members. */
2920 unloadedAnyObj = HS_BOOL_TRUE;
2921 }
2922 }
2923
2924 if (unloadedAnyObj) {
2925 return 1;
2926 }
2927 else {
2928 errorBelch("unloadObj: can't find `%" PATH_FMT "' to unload", path);
2929 return 0;
2930 }
2931 }
2932
2933 /* -----------------------------------------------------------------------------
2934 * Sanity checking. For each ObjectCode, maintain a list of address ranges
2935 * which may be prodded during relocation, and abort if we try and write
2936 * outside any of these.
2937 */
2938 static void
2939 addProddableBlock ( ObjectCode* oc, void* start, int size )
2940 {
2941 ProddableBlock* pb
2942 = stgMallocBytes(sizeof(ProddableBlock), "addProddableBlock");
2943
2944 IF_DEBUG(linker, debugBelch("addProddableBlock: %p %p %d\n", oc, start, size));
2945 ASSERT(size > 0);
2946 pb->start = start;
2947 pb->size = size;
2948 pb->next = oc->proddables;
2949 oc->proddables = pb;
2950 }
2951
2952 static void
2953 checkProddableBlock (ObjectCode *oc, void *addr, size_t size )
2954 {
2955 ProddableBlock* pb;
2956
2957 for (pb = oc->proddables; pb != NULL; pb = pb->next) {
2958 char* s = (char*)(pb->start);
2959 char* e = s + pb->size;
2960 char* a = (char*)addr;
2961 if (a >= s && (a+size) <= e) return;
2962 }
2963 barf("checkProddableBlock: invalid fixup in runtime linker: %p", addr);
2964 }
2965
2966 static void freeProddableBlocks (ObjectCode *oc)
2967 {
2968 ProddableBlock *pb, *next;
2969
2970 for (pb = oc->proddables; pb != NULL; pb = next) {
2971 next = pb->next;
2972 stgFree(pb);
2973 }
2974 oc->proddables = NULL;
2975 }
2976
2977 /* -----------------------------------------------------------------------------
2978 * Section management.
2979 */
2980 static void
2981 addSection ( ObjectCode* oc, SectionKind kind,
2982 void* start, void* end )
2983 {
2984 Section* s = stgMallocBytes(sizeof(Section), "addSection");
2985 s->start = start;
2986 s->end = end;
2987 s->kind = kind;
2988 s->next = oc->sections;
2989 oc->sections = s;
2990
2991 IF_DEBUG(linker, debugBelch("addSection: %p-%p (size %lld), kind %d\n",
2992 start, ((char*)end)-1, ((long long)(size_t)end) - ((long long)(size_t)start) + 1, kind ));
2993 }
2994
2995
2996 /* --------------------------------------------------------------------------
2997 * Symbol Extras.
2998 * This is about allocating a small chunk of memory for every symbol in the
2999 * object file. We make sure that the SymboLExtras are always "in range" of
3000 * limited-range PC-relative instructions on various platforms by allocating
3001 * them right next to the object code itself.
3002 */
3003
3004 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3005 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3006
3007 /*
3008 ocAllocateSymbolExtras
3009
3010 Allocate additional space at the end of the object file image to make room
3011 for jump islands (powerpc, x86_64, arm) and GOT entries (x86_64).
3012
3013 PowerPC relative branch instructions have a 24 bit displacement field.
3014 As PPC code is always 4-byte-aligned, this yields a +-32MB range.
3015 If a particular imported symbol is outside this range, we have to redirect
3016 the jump to a short piece of new code that just loads the 32bit absolute
3017 address and jumps there.
3018 On x86_64, PC-relative jumps and PC-relative accesses to the GOT are limited
3019 to 32 bits (+-2GB).
3020
3021 This function just allocates space for one SymbolExtra for every
3022 undefined symbol in the object file. The code for the jump islands is
3023 filled in by makeSymbolExtra below.
3024 */
3025
3026 static int ocAllocateSymbolExtras( ObjectCode* oc, int count, int first )
3027 {
3028 #ifdef USE_MMAP
3029 int pagesize, n, m;
3030 #endif
3031 int aligned;
3032 #ifndef USE_MMAP
3033 int misalignment = 0;
3034 #ifdef darwin_HOST_OS
3035 misalignment = oc->misalignment;
3036 #endif
3037 #endif
3038
3039 if( count > 0 )
3040 {
3041 // round up to the nearest 4
3042 aligned = (oc->fileSize + 3) & ~3;
3043
3044 #ifdef USE_MMAP
3045 pagesize = getpagesize();
3046 n = ROUND_UP( oc->fileSize, pagesize );
3047 m = ROUND_UP( aligned + sizeof (SymbolExtra) * count, pagesize );
3048
3049 /* we try to use spare space at the end of the last page of the
3050 * image for the jump islands, but if there isn't enough space
3051 * then we have to map some (anonymously, remembering MAP_32BIT).
3052 */
3053 if( m > n ) // we need to allocate more pages
3054 {
3055 if (USE_CONTIGUOUS_MMAP)
3056 {
3057 /* Keep image and symbol_extras contiguous */
3058 void *new = mmapForLinker(n + (sizeof(SymbolExtra) * count),
3059 MAP_ANONYMOUS, -1);
3060 if (new)
3061 {
3062 memcpy(new, oc->image, oc->fileSize);
3063 munmap(oc->image, n);
3064 oc->image = new;
3065 oc->fileSize = n + (sizeof(SymbolExtra) * count);
3066 oc->symbol_extras = (SymbolExtra *) (oc->image + n);
3067 }
3068 else
3069 oc->symbol_extras = NULL;
3070 }
3071 else
3072 {
3073 oc->symbol_extras = mmapForLinker(sizeof(SymbolExtra) * count,
3074 MAP_ANONYMOUS, -1);
3075 }
3076 }
3077 else
3078 {
3079 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3080 }
3081 #else
3082 oc->image -= misalignment;
3083 oc->image = stgReallocBytes( oc->image,
3084 misalignment +
3085 aligned + sizeof (SymbolExtra) * count,
3086 "ocAllocateSymbolExtras" );
3087 oc->image += misalignment;
3088
3089 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3090 #endif /* USE_MMAP */
3091
3092 memset( oc->symbol_extras, 0, sizeof (SymbolExtra) * count );
3093 }
3094 else
3095 oc->symbol_extras = NULL;
3096
3097 oc->first_symbol_extra = first;
3098 oc->n_symbol_extras = count;
3099
3100 return 1;
3101 }
3102
3103 #endif
3104 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3105
3106 #if defined(arm_HOST_ARCH)
3107
3108 static void
3109 ocFlushInstructionCache( ObjectCode *oc )
3110 {
3111 // Object code
3112 __clear_cache(oc->image, oc->image + oc->fileSize);
3113 // Jump islands
3114 __clear_cache(oc->symbol_extras, &oc->symbol_extras[oc->n_symbol_extras]);
3115 }
3116
3117 #endif
3118
3119 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3120 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3121
3122 static SymbolExtra* makeSymbolExtra( ObjectCode* oc,
3123 unsigned long symbolNumber,
3124 unsigned long target )
3125 {
3126 SymbolExtra *extra;
3127
3128 ASSERT( symbolNumber >= oc->first_symbol_extra
3129 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3130
3131 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3132
3133 #ifdef powerpc_HOST_ARCH
3134 // lis r12, hi16(target)
3135 extra->jumpIsland.lis_r12 = 0x3d80;
3136 extra->jumpIsland.hi_addr = target >> 16;
3137
3138 // ori r12, r12, lo16(target)
3139 extra->jumpIsland.ori_r12_r12 = 0x618c;
3140 extra->jumpIsland.lo_addr = target & 0xffff;
3141
3142 // mtctr r12
3143 extra->jumpIsland.mtctr_r12 = 0x7d8903a6;
3144
3145 // bctr
3146 extra->jumpIsland.bctr = 0x4e800420;
3147 #endif
3148 #ifdef x86_64_HOST_ARCH
3149 // jmp *-14(%rip)
3150 static uint8_t jmp[] = { 0xFF, 0x25, 0xF2, 0xFF, 0xFF, 0xFF };
3151 extra->addr = target;
3152 memcpy(extra->jumpIsland, jmp, 6);
3153 #endif
3154
3155 return extra;
3156 }
3157
3158 #endif
3159 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3160
3161 #ifdef arm_HOST_ARCH
3162 static SymbolExtra* makeArmSymbolExtra( ObjectCode* oc,
3163 unsigned long symbolNumber,
3164 unsigned long target,
3165 int fromThumb,
3166 int toThumb )
3167 {
3168 SymbolExtra *extra;
3169
3170 ASSERT( symbolNumber >= oc->first_symbol_extra
3171 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3172
3173 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3174
3175 // Make sure instruction mode bit is set properly
3176 if (toThumb)
3177 target |= 1;
3178 else
3179 target &= ~1;
3180
3181 if (!fromThumb) {
3182 // In ARM encoding:
3183 // movw r12, #0
3184 // movt r12, #0
3185 // bx r12
3186 uint32_t code[] = { 0xe300c000, 0xe340c000, 0xe12fff1c };
3187
3188 // Patch lower half-word into movw
3189 code[0] |= ((target>>12) & 0xf) << 16;
3190 code[0] |= target & 0xfff;
3191 // Patch upper half-word into movt
3192 target >>= 16;
3193 code[1] |= ((target>>12) & 0xf) << 16;
3194 code[1] |= target & 0xfff;
3195
3196 memcpy(extra->jumpIsland, code, 12);
3197
3198 } else {
3199 // In Thumb encoding:
3200 // movw r12, #0
3201 // movt r12, #0
3202 // bx r12
3203 uint16_t code[] = { 0xf240, 0x0c00,
3204 0xf2c0, 0x0c00,
3205 0x4760 };
3206
3207 // Patch lower half-word into movw
3208 code[0] |= (target>>12) & 0xf;
3209 code[0] |= ((target>>11) & 0x1) << 10;
3210 code[1] |= ((target>>8) & 0x7) << 12;
3211 code[1] |= target & 0xff;
3212 // Patch upper half-word into movt
3213 target >>= 16;
3214 code[2] |= (target>>12) & 0xf;
3215 code[2] |= ((target>>11) & 0x1) << 10;
3216 code[3] |= ((target>>8) & 0x7) << 12;
3217 code[3] |= target & 0xff;
3218
3219 memcpy(extra->jumpIsland, code, 10);
3220 }
3221
3222 return extra;
3223 }
3224 #endif // arm_HOST_ARCH
3225
3226 /* --------------------------------------------------------------------------
3227 * PowerPC specifics (instruction cache flushing)
3228 * ------------------------------------------------------------------------*/
3229
3230 #ifdef powerpc_HOST_ARCH
3231 /*
3232 ocFlushInstructionCache
3233
3234 Flush the data & instruction caches.
3235 Because the PPC has split data/instruction caches, we have to
3236 do that whenever we modify code at runtime.
3237 */
3238
3239 static void
3240 ocFlushInstructionCacheFrom(void* begin, size_t length)
3241 {
3242 size_t n = (length + 3) / 4;
3243 unsigned long* p = begin;
3244
3245 while (n--)
3246 {
3247 __asm__ volatile ( "dcbf 0,%0\n\t"
3248 "sync\n\t"
3249 "icbi 0,%0"
3250 :
3251 : "r" (p)
3252 );
3253 p++;
3254 }
3255 __asm__ volatile ( "sync\n\t"
3256 "isync"
3257 );
3258 }
3259
3260 static void
3261 ocFlushInstructionCache( ObjectCode *oc )
3262 {
3263 /* The main object code */
3264 ocFlushInstructionCacheFrom(oc->image
3265 #ifdef darwin_HOST_OS
3266 + oc->misalignment
3267 #endif
3268 , oc->fileSize);
3269
3270 /* Jump Islands */
3271 ocFlushInstructionCacheFrom(oc->symbol_extras, sizeof(SymbolExtra) * oc->n_symbol_extras);
3272 }
3273 #endif /* powerpc_HOST_ARCH */
3274
3275
3276 /* --------------------------------------------------------------------------
3277 * PEi386 specifics (Win32 targets)
3278 * ------------------------------------------------------------------------*/
3279
3280 /* The information for this linker comes from
3281 Microsoft Portable Executable
3282 and Common Object File Format Specification
3283 revision 5.1 January 1998
3284 which SimonM says comes from the MS Developer Network CDs.
3285
3286 It can be found there (on older CDs), but can also be found
3287 online at:
3288
3289 http://www.microsoft.com/hwdev/hardware/PECOFF.asp
3290
3291 (this is Rev 6.0 from February 1999).
3292
3293 Things move, so if that fails, try searching for it via
3294
3295 http://www.google.com/search?q=PE+COFF+specification
3296
3297 The ultimate reference for the PE format is the Winnt.h
3298 header file that comes with the Platform SDKs; as always,
3299 implementations will drift wrt their documentation.
3300
3301 A good background article on the PE format is Matt Pietrek's
3302 March 1994 article in Microsoft System Journal (MSJ)
3303 (Vol.9, No. 3): "Peering Inside the PE: A Tour of the
3304 Win32 Portable Executable File Format." The info in there
3305 has recently been updated in a two part article in
3306 MSDN magazine, issues Feb and March 2002,
3307 "Inside Windows: An In-Depth Look into the Win32 Portable
3308 Executable File Format"
3309
3310 John Levine's book "Linkers and Loaders" contains useful
3311 info on PE too.
3312 */
3313
3314
3315 #if defined(OBJFORMAT_PEi386)
3316
3317
3318
3319 typedef unsigned char UChar;
3320 typedef unsigned short UInt16;
3321 typedef unsigned int UInt32;
3322 typedef int Int32;
3323 typedef unsigned long long int UInt64;
3324
3325
3326 typedef
3327 struct {
3328 UInt16 Machine;
3329 UInt16 NumberOfSections;
3330 UInt32 TimeDateStamp;
3331 UInt32 PointerToSymbolTable;
3332 UInt32 NumberOfSymbols;
3333 UInt16 SizeOfOptionalHeader;
3334 UInt16 Characteristics;
3335 }
3336 COFF_header;
3337
3338 #define sizeof_COFF_header 20
3339
3340
3341 typedef
3342 struct {
3343 UChar Name[8];
3344 UInt32 VirtualSize;
3345 UInt32 VirtualAddress;
3346 UInt32 SizeOfRawData;
3347 UInt32 PointerToRawData;
3348 UInt32 PointerToRelocations;
3349 UInt32 PointerToLinenumbers;
3350 UInt16 NumberOfRelocations;
3351 UInt16 NumberOfLineNumbers;
3352 UInt32 Characteristics;
3353 }
3354 COFF_section;
3355
3356 #define sizeof_COFF_section 40
3357
3358
3359 typedef
3360 struct {
3361 UChar Name[8];
3362 UInt32 Value;
3363 UInt16 SectionNumber;
3364 UInt16 Type;
3365 UChar StorageClass;
3366 UChar NumberOfAuxSymbols;
3367 }
3368 COFF_symbol;
3369
3370 #define sizeof_COFF_symbol 18
3371
3372
3373 typedef
3374 struct {
3375 UInt32 VirtualAddress;
3376 UInt32 SymbolTableIndex;
3377 UInt16 Type;
3378 }
3379 COFF_reloc;
3380
3381 #define sizeof_COFF_reloc 10
3382
3383
3384 /* From PE spec doc, section 3.3.2 */
3385 /* Note use of MYIMAGE_* since IMAGE_* are already defined in
3386 windows.h -- for the same purpose, but I want to know what I'm
3387 getting, here. */
3388 #define MYIMAGE_FILE_RELOCS_STRIPPED 0x0001
3389 #define MYIMAGE_FILE_EXECUTABLE_IMAGE 0x0002
3390 #define MYIMAGE_FILE_DLL 0x2000
3391 #define MYIMAGE_FILE_SYSTEM 0x1000
3392 #define MYIMAGE_FILE_BYTES_REVERSED_HI 0x8000
3393 #define MYIMAGE_FILE_BYTES_REVERSED_LO 0x0080
3394 #define MYIMAGE_FILE_32BIT_MACHINE 0x0100
3395
3396 /* From PE spec doc, section 5.4.2 and 5.4.4 */
3397 #define MYIMAGE_SYM_CLASS_EXTERNAL 2
3398 #define MYIMAGE_SYM_CLASS_STATIC 3
3399 #define MYIMAGE_SYM_UNDEFINED 0
3400
3401 /* From PE spec doc, section 4.1 */
3402 #define MYIMAGE_SCN_CNT_CODE 0x00000020
3403 #define MYIMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
3404 #define MYIMAGE_SCN_LNK_NRELOC_OVFL 0x01000000
3405
3406 /* From PE spec doc, section 5.2.1 */
3407 #define MYIMAGE_REL_I386_DIR32 0x0006
3408 #define MYIMAGE_REL_I386_REL32 0x0014
3409
3410
3411 /* We use myindex to calculate array addresses, rather than
3412 simply doing the normal subscript thing. That's because
3413 some of the above structs have sizes which are not
3414 a whole number of words. GCC rounds their sizes up to a
3415 whole number of words, which means that the address calcs
3416 arising from using normal C indexing or pointer arithmetic
3417 are just plain wrong. Sigh.
3418 */
3419 static UChar *
3420 myindex ( int scale, void* base, int index )
3421 {
3422 return
3423 ((UChar*)base) + scale * index;
3424 }
3425
3426
3427 static void
3428 printName ( UChar* name, UChar* strtab )
3429 {
3430 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3431 UInt32 strtab_offset = * (UInt32*)(name+4);
3432 debugBelch("%s", strtab + strtab_offset );
3433 } else {
3434 int i;
3435 for (i = 0; i < 8; i++) {
3436 if (name[i] == 0) break;
3437 debugBelch("%c", name[i] );
3438 }
3439 }
3440 }
3441
3442
3443 static void
3444 copyName ( UChar* name, UChar* strtab, UChar* dst, int dstSize )
3445 {
3446 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3447 UInt32 strtab_offset = * (UInt32*)(name+4);
3448 strncpy ( (char*)dst, (char*)strtab+strtab_offset, dstSize );
3449 dst[dstSize-1] = 0;
3450 } else {
3451 int i = 0;
3452 while (1) {
3453 if (i >= 8) break;
3454 if (name[i] == 0) break;
3455 dst[i] = name[i];
3456 i++;
3457 }
3458 dst[i] = 0;
3459 }
3460 }
3461
3462
3463 static UChar *
3464 cstring_from_COFF_symbol_name ( UChar* name, UChar* strtab )
3465 {
3466 UChar* newstr;
3467 /* If the string is longer than 8 bytes, look in the
3468 string table for it -- this will be correctly zero terminated.
3469 */
3470 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3471 UInt32 strtab_offset = * (UInt32*)(name+4);
3472 return ((UChar*)strtab) + strtab_offset;
3473 }
3474 /* Otherwise, if shorter than 8 bytes, return the original,
3475 which by defn is correctly terminated.
3476 */
3477 if (name[7]==0) return name;
3478 /* The annoying case: 8 bytes. Copy into a temporary
3479 (XXX which is never freed ...)
3480 */
3481 newstr = stgMallocBytes(9, "cstring_from_COFF_symbol_name");
3482 ASSERT(newstr);
3483 strncpy((char*)newstr,(char*)name,8);
3484 newstr[8] = 0;
3485 return newstr;
3486 }
3487
3488 /* Getting the name of a section is mildly tricky, so we make a
3489 function for it. Sadly, in one case we have to copy the string
3490 (when it is exactly 8 bytes long there's no trailing '\0'), so for
3491 consistency we *always* copy the string; the caller must free it
3492 */
3493 static char *
3494 cstring_from_section_name (UChar* name, UChar* strtab)
3495 {
3496 char *newstr;
3497
3498 if (name[0]=='/') {
3499 int strtab_offset = strtol((char*)name+1,NULL,10);
3500 int len = strlen(((char*)strtab) + strtab_offset);
3501
3502 newstr = stgMallocBytes(len+1, "cstring_from_section_symbol_name");
3503 strcpy((char*)newstr, (char*)((UChar*)strtab) + strtab_offset);
3504 return newstr;
3505 }
3506 else
3507 {
3508 newstr = stgMallocBytes(9, "cstring_from_section_symbol_name");
3509 ASSERT(newstr);
3510 strncpy((char*)newstr,(char*)name,8);
3511 newstr[8] = 0;
3512 return newstr;
3513 }
3514 }
3515
3516 /* Just compares the short names (first 8 chars) */
3517 static COFF_section *
3518 findPEi386SectionCalled ( ObjectCode* oc, UChar* name )
3519 {
3520 int i;
3521 COFF_header* hdr
3522 = (COFF_header*)(oc->image);
3523 COFF_section* sectab
3524 = (COFF_section*) (
3525 ((UChar*)(oc->image))
3526 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3527 );
3528 for (i = 0; i < hdr->NumberOfSections; i++) {
3529 UChar* n1;
3530 UChar* n2;
3531 COFF_section* section_i
3532 = (COFF_section*)
3533 myindex ( sizeof_COFF_section, sectab, i );
3534 n1 = (UChar*) &(section_i->Name);
3535 n2 = name;
3536 if (n1[0]==n2[0] && n1[1]==n2[1] && n1[2]==n2[2] &&
3537 n1[3]==n2[3] && n1[4]==n2[4] && n1[5]==n2[5] &&
3538 n1[6]==n2[6] && n1[7]==n2[7])
3539 return section_i;
3540 }
3541
3542 return NULL;
3543 }
3544
3545 static void
3546 zapTrailingAtSign ( UChar* sym )
3547 {
3548 # define my_isdigit(c) ((c) >= '0' && (c) <= '9')
3549 int i, j;
3550 if (sym[0] == 0) return;
3551 i = 0;
3552 while (sym[i] != 0) i++;
3553 i--;
3554 j = i;
3555 while (j > 0 && my_isdigit(sym[j])) j--;
3556 if (j > 0 && sym[j] == '@' && j != i) sym[j] = 0;
3557 # undef my_isdigit
3558 }
3559
3560 static void *
3561 lookupSymbolInDLLs ( UChar *lbl )
3562 {
3563 OpenedDLL* o_dll;
3564 void *sym;
3565
3566 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
3567 /* debugBelch("look in %s for %s\n", o_dll->name, lbl); */
3568
3569 if (lbl[0] == '_') {
3570 /* HACK: if the name has an initial underscore, try stripping
3571 it off & look that up first. I've yet to verify whether there's
3572 a Rule that governs whether an initial '_' *should always* be
3573 stripped off when mapping from import lib name to the DLL name.
3574 */
3575 sym = GetProcAddress(o_dll->instance, (char*)(lbl+1));
3576 if (sym != NULL) {
3577 /*debugBelch("found %s in %s\n", lbl+1,o_dll->name);*/
3578 return sym;
3579 }
3580 }
3581 sym = GetProcAddress(o_dll->instance, (char*)lbl);
3582 if (sym != NULL) {
3583 /*debugBelch("found %s in %s\n", lbl,o_dll->name);*/
3584 return sym;
3585 }
3586 }
3587 return NULL;
3588 }
3589
3590
3591 static int
3592 ocVerifyImage_PEi386 ( ObjectCode* oc )
3593 {
3594 int i;
3595 UInt32 j, noRelocs;
3596 COFF_header* hdr;
3597 COFF_section* sectab;
3598 COFF_symbol* symtab;
3599 UChar* strtab;
3600 /* debugBelch("\nLOADING %s\n", oc->fileName); */
3601 hdr = (COFF_header*)(oc->image);
3602 sectab = (COFF_section*) (
3603 ((UChar*)(oc->image))
3604 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3605 );
3606 symtab = (COFF_symbol*) (
3607 ((UChar*)(oc->image))
3608 + hdr->PointerToSymbolTable
3609 );
3610 strtab = ((UChar*)symtab)
3611 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3612
3613 #if defined(i386_HOST_ARCH)
3614 if (hdr->Machine != 0x14c) {
3615 errorBelch("%" PATH_FMT ": Not x86 PEi386", oc->fileName);
3616 return 0;
3617 }
3618 #elif defined(x86_64_HOST_ARCH)
3619 if (hdr->Machine != 0x8664) {
3620 errorBelch("%" PATH_FMT ": Not x86_64 PEi386", oc->fileName);
3621 return 0;
3622 }
3623 #else
3624 errorBelch("PEi386 not supported on this arch");
3625 #endif
3626
3627 if (hdr->SizeOfOptionalHeader != 0) {
3628 errorBelch("%" PATH_FMT ": PEi386 with nonempty optional header", oc->fileName);
3629 return 0;
3630 }
3631 if ( /* (hdr->Characteristics & MYIMAGE_FILE_RELOCS_STRIPPED) || */
3632 (hdr->Characteristics & MYIMAGE_FILE_EXECUTABLE_IMAGE) ||
3633 (hdr->Characteristics & MYIMAGE_FILE_DLL) ||
3634 (hdr->Characteristics & MYIMAGE_FILE_SYSTEM) ) {
3635 errorBelch("%" PATH_FMT ": Not a PEi386 object file", oc->fileName);
3636 return 0;
3637 }
3638 if ( (hdr->Characteristics & MYIMAGE_FILE_BYTES_REVERSED_HI)
3639 /* || !(hdr->Characteristics & MYIMAGE_FILE_32BIT_MACHINE) */ ) {
3640 errorBelch("%" PATH_FMT ": Invalid PEi386 word size or endiannness: %d",
3641 oc->fileName,
3642 (int)(hdr->Characteristics));
3643 return 0;
3644 }
3645 /* If the string table size is way crazy, this might indicate that
3646 there are more than 64k relocations, despite claims to the
3647 contrary. Hence this test. */
3648 /* debugBelch("strtab size %d\n", * (UInt32*)strtab); */
3649 #if 0
3650 if ( (*(UInt32*)strtab) > 600000 ) {
3651 /* Note that 600k has no special significance other than being
3652 big enough to handle the almost-2MB-sized lumps that
3653 constitute HSwin32*.o. */
3654 debugBelch("PEi386 object has suspiciously large string table; > 64k relocs?");
3655 return 0;
3656 }
3657 #endif
3658
3659 /* No further verification after this point; only debug printing. */
3660 i = 0;
3661 IF_DEBUG(linker, i=1);
3662 if (i == 0) return 1;
3663
3664 debugBelch( "sectab offset = %" FMT_Int "\n", ((UChar*)sectab) - ((UChar*)hdr) );
3665 debugBelch( "symtab offset = %" FMT_Int "\n", ((UChar*)symtab) - ((UChar*)hdr) );
3666 debugBelch( "strtab offset = %" FMT_Int "\n", ((UChar*)strtab) - ((UChar*)hdr) );
3667
3668 debugBelch("\n" );
3669 debugBelch( "Machine: 0x%x\n", (UInt32)(hdr->Machine) );
3670 debugBelch( "# sections: %d\n", (UInt32)(hdr->NumberOfSections) );
3671 debugBelch( "time/date: 0x%x\n", (UInt32)(hdr->TimeDateStamp) );
3672 debugBelch( "symtab offset: %d\n", (UInt32)(hdr->PointerToSymbolTable) );
3673 debugBelch( "# symbols: %d\n", (UInt32)(hdr->NumberOfSymbols) );
3674 debugBelch( "sz of opt hdr: %d\n", (UInt32)(hdr->SizeOfOptionalHeader) );
3675 debugBelch( "characteristics: 0x%x\n", (UInt32)(hdr->Characteristics) );
3676
3677 /* Print the section table. */
3678 debugBelch("\n" );
3679 for (i = 0; i < hdr->NumberOfSections; i++) {
3680 COFF_reloc* reltab;
3681 COFF_section* sectab_i
3682 = (COFF_section*)
3683 myindex ( sizeof_COFF_section, sectab, i );
3684 debugBelch(
3685 "\n"
3686 "section %d\n"
3687 " name `",
3688 i
3689 );
3690 printName ( sectab_i->Name, strtab );
3691 debugBelch(
3692 "'\n"
3693 " vsize %d\n"
3694 " vaddr %d\n"
3695 " data sz %d\n"
3696 " data off %d\n"
3697 " num rel %d\n"
3698 " off rel %d\n"
3699 " ptr raw 0x%x\n",
3700 sectab_i->VirtualSize,
3701 sectab_i->VirtualAddress,
3702 sectab_i->SizeOfRawData,
3703 sectab_i->PointerToRawData,
3704 sectab_i->NumberOfRelocations,
3705 sectab_i->PointerToRelocations,
3706 sectab_i->PointerToRawData
3707 );
3708 reltab = (COFF_reloc*) (
3709 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
3710 );
3711
3712 if ( sectab_i->Characteristics & MYIMAGE_SCN_LNK_NRELOC_OVFL ) {
3713 /* If the relocation field (a short) has overflowed, the
3714 * real count can be found in the first reloc entry.
3715 *
3716 * See Section 4.1 (last para) of the PE spec (rev6.0).
3717 */
3718 COFF_reloc* rel = (COFF_reloc*)
3719 myindex ( sizeof_COFF_reloc, reltab, 0 );
3720 noRelocs = rel->VirtualAddress;
3721 j = 1;
3722 } else {
3723 noRelocs = sectab_i->NumberOfRelocations;
3724 j = 0;
3725 }
3726
3727 for (; j < noRelocs; j++) {
3728 COFF_symbol* sym;
3729 COFF_reloc* rel = (COFF_reloc*)
3730 myindex ( sizeof_COFF_reloc, reltab, j );
3731 debugBelch(
3732 " type 0x%-4x vaddr 0x%-8x name `",
3733 (UInt32)rel->Type,
3734 rel->VirtualAddress );
3735 sym = (COFF_symbol*)
3736 myindex ( sizeof_COFF_symbol, symtab, rel->SymbolTableIndex );
3737 /* Hmm..mysterious looking offset - what's it for? SOF */
3738 printName ( sym->Name, strtab -10 );
3739 debugBelch("'\n" );
3740 }
3741
3742 debugBelch("\n" );
3743 }
3744 debugBelch("\n" );
3745 debugBelch("string table has size 0x%x\n", * (UInt32*)strtab );
3746 debugBelch("---START of string table---\n");
3747 for (i = 4; i < *(Int32*)strtab; i++) {
3748 if (strtab[i] == 0)
3749 debugBelch("\n"); else
3750 debugBelch("%c", strtab[i] );
3751 }
3752 debugBelch("--- END of string table---\n");
3753
3754 debugBelch("\n" );
3755 i = 0;
3756 while (1) {
3757 COFF_symbol* symtab_i;
3758 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
3759 symtab_i = (COFF_symbol*)
3760 myindex ( sizeof_COFF_symbol, symtab, i );
3761 debugBelch(
3762 "symbol %d\n"
3763 " name `",
3764 i
3765 );
3766 printName ( symtab_i->Name, strtab );
3767 debugBelch(
3768 "'\n"
3769 " value 0x%x\n"
3770 " 1+sec# %d\n"
3771 " type 0x%x\n"
3772 " sclass 0x%x\n"
3773 " nAux %d\n",
3774 symtab_i->Value,
3775 (Int32)(symtab_i->SectionNumber),
3776 (UInt32)symtab_i->Type,
3777 (UInt32)symtab_i->StorageClass,
3778 (UInt32)symtab_i->NumberOfAuxSymbols
3779 );
3780 i += symtab_i->NumberOfAuxSymbols;
3781 i++;
3782 }
3783
3784 debugBelch("\n" );
3785 return 1;
3786 }
3787
3788
3789 static int
3790 ocGetNames_PEi386 ( ObjectCode* oc )
3791 {
3792 COFF_header* hdr;
3793 COFF_section* sectab;
3794 COFF_symbol* symtab;
3795 UChar* strtab;
3796
3797 UChar* sname;
3798 void* addr;
3799 int i;
3800
3801 hdr = (COFF_header*)(oc->image);
3802 sectab = (COFF_section*) (
3803 ((UChar*)(oc->image))
3804 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3805 );
3806 symtab = (COFF_symbol*) (
3807 ((UChar*)(oc->image))
3808 + hdr->PointerToSymbolTable
3809 );
3810 strtab = ((UChar*)(oc->image))
3811 + hdr->PointerToSymbolTable
3812 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3813
3814 /* Allocate space for any (local, anonymous) .bss sections. */
3815
3816 for (i = 0; i < hdr->NumberOfSections; i++) {
3817 UInt32 bss_sz;
3818 UChar* zspace;
3819 COFF_section* sectab_i
3820 = (COFF_section*)
3821 myindex ( sizeof_COFF_section, sectab, i );
3822
3823 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3824
3825 if (0 != strcmp(secname, ".bss")) {
3826 stgFree(secname);
3827 continue;
3828 }
3829
3830 stgFree(secname);
3831
3832 /* sof 10/05: the PE spec text isn't too clear regarding what
3833 * the SizeOfRawData field is supposed to hold for object
3834 * file sections containing just uninitialized data -- for executables,
3835 * it is supposed to be zero; unclear what it's supposed to be
3836 * for object files. However, VirtualSize is guaranteed to be
3837 * zero for object files, which definitely suggests that SizeOfRawData
3838 * will be non-zero (where else would the size of this .bss section be
3839 * stored?) Looking at the COFF_section info for incoming object files,
3840 * this certainly appears to be the case.
3841 *
3842 * => I suspect we've been incorrectly handling .bss sections in (relocatable)
3843 * object files up until now. This turned out to bite us with ghc-6.4.1's use
3844 * of gcc-3.4.x, which has started to emit initially-zeroed-out local 'static'
3845 * variable decls into the .bss section. (The specific function in Q which
3846 * triggered this is libraries/base/cbits/dirUtils.c:__hscore_getFolderPath())
3847 */
3848 if (sectab_i->VirtualSize == 0 && sectab_i->SizeOfRawData == 0) continue;
3849 /* This is a non-empty .bss section. Allocate zeroed space for
3850 it, and set its PointerToRawData field such that oc->image +
3851 PointerToRawData == addr_of_zeroed_space. */
3852 bss_sz = sectab_i->VirtualSize;
3853 if ( bss_sz < sectab_i->SizeOfRawData) { bss_sz = sectab_i->SizeOfRawData; }
3854 zspace = stgCallocBytes(1, bss_sz, "ocGetNames_PEi386(anonymous bss)");
3855 sectab_i->PointerToRawData = ((UChar*)zspace) - ((UChar*)(oc->image));
3856 addProddableBlock(oc, zspace, bss_sz);
3857 /* debugBelch("BSS anon section at 0x%x\n", zspace); */
3858 }
3859
3860 /* Copy section information into the ObjectCode. */
3861
3862 for (i = 0; i < hdr->NumberOfSections; i++) {
3863 UChar* start;
3864 UChar* end;
3865 UInt32 sz;
3866
3867 SectionKind kind
3868 = SECTIONKIND_OTHER;
3869 COFF_section* sectab_i
3870 = (COFF_section*)
3871 myindex ( sizeof_COFF_section, sectab, i );
3872
3873 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3874
3875 IF_DEBUG(linker, debugBelch("section name = %s\n", secname ));
3876
3877 # if 0
3878 /* I'm sure this is the Right Way to do it. However, the
3879 alternative of testing the sectab_i->Name field seems to
3880 work ok with Cygwin.
3881
3882 EZY: We should strongly consider using this style, because
3883 it lets us pick up sections that should be added (e.g.
3884 for a while the linker did not work due to missing .eh_frame
3885 in this section.)
3886 */
3887 if (sectab_i->Characteristics & MYIMAGE_SCN_CNT_CODE ||
3888 sectab_i->Characteristics & MYIMAGE_SCN_CNT_INITIALIZED_DATA)
3889 kind = SECTIONKIND_CODE_OR_RODATA;
3890 # endif
3891
3892 if (0==strcmp(".text",(char*)secname) ||
3893 0==strcmp(".text.startup",(char*)secname) ||
3894 0==strcmp(".rdata",(char*)secname)||
3895 0==strcmp(".eh_frame", (char*)secname)||
3896 0==strcmp(".rodata",(char*)secname))
3897 kind = SECTIONKIND_CODE_OR_RODATA;
3898 if (0==strcmp(".data",(char*)secname) ||
3899 0==strcmp(".bss",(char*)secname))
3900 kind = SECTIONKIND_RWDATA;
3901 if (0==strcmp(".ctors", (char*)secname))
3902 kind = SECTIONKIND_INIT_ARRAY;
3903
3904 ASSERT(sectab_i->SizeOfRawData == 0 || sectab_i->VirtualSize == 0);
3905 sz = sectab_i->SizeOfRawData;
3906 if (sz < sectab_i->VirtualSize) sz = sectab_i->VirtualSize;
3907
3908 start = ((UChar*)(oc->image)) + sectab_i->PointerToRawData;
3909 end = start + sz - 1;
3910
3911 if (kind == SECTIONKIND_OTHER
3912 /* Ignore sections called which contain stabs debugging
3913 information. */
3914 && 0 != strcmp(".stab", (char*)secname)
3915 && 0 != strcmp(".stabstr", (char*)secname)
3916 /* Ignore sections called which contain exception information. */
3917 && 0 != strcmp(".pdata", (char*)secname)
3918 && 0 != strcmp(".xdata", (char*)secname)
3919 /* ignore section generated from .ident */
3920 && 0!= strncmp(".debug", (char*)secname, 6)
3921 /* ignore unknown section that appeared in gcc 3.4.5(?) */
3922 && 0!= strcmp(".reloc", (char*)secname)
3923 && 0 != strcmp(".rdata$zzz", (char*)secname)
3924 /* ignore linker directive sections */
3925 && 0 != strcmp(".drectve", (char*)secname)
3926 ) {
3927 errorBelch("Unknown PEi386 section name `%s' (while processing: %" PATH_FMT")", secname, oc->fileName);
3928 stgFree(secname);
3929 return 0;
3930 }
3931
3932 if (kind != SECTIONKIND_OTHER && end >= start) {
3933 if ((((size_t)(start)) % sizeof(void *)) != 0) {
3934 barf("Misaligned section: %p", start);
3935 }
3936
3937 addSection(oc, kind, start, end);
3938 addProddableBlock(oc, start, end - start + 1);
3939 }
3940
3941 stgFree(secname);
3942 }
3943
3944 /* Copy exported symbols into the ObjectCode. */
3945
3946 oc->n_symbols = hdr->NumberOfSymbols;
3947 oc->symbols = stgMallocBytes(oc->n_symbols * sizeof(char*),
3948 "ocGetNames_PEi386(oc->symbols)");
3949 /* Call me paranoid; I don't care. */
3950 for (i = 0; i < oc->n_symbols; i++)
3951 oc->symbols[i] = NULL;
3952
3953 i = 0;
3954 while (1) {
3955 COFF_symbol* symtab_i;
3956 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
3957 symtab_i = (COFF_symbol*)
3958 myindex ( sizeof_COFF_symbol, symtab, i );
3959
3960 addr = NULL;
3961
3962 if (symtab_i->StorageClass == MYIMAGE_SYM_CLASS_EXTERNAL
3963 && symtab_i->SectionNumber != MYIMAGE_SYM_UNDEFINED) {
3964 /* This symbol is global and defined, viz, exported */
3965 /* for MYIMAGE_SYMCLASS_EXTERNAL
3966 && !MYIMAGE_SYM_UNDEFINED,
3967 the address of the symbol is:
3968 address of relevant section + offset in section
3969 */
3970 COFF_section* sectabent
3971 = (COFF_section*) myindex ( sizeof_COFF_section,
3972 sectab,
3973 symtab_i->SectionNumber-1 );
3974 addr = ((UChar*)(oc->image))
3975 + (sectabent->PointerToRawData
3976 + symtab_i->Value);
3977 }
3978 else
3979 if (symtab_i->SectionNumber == MYIMAGE_SYM_UNDEFINED
3980 && symtab_i->Value > 0) {
3981 /* This symbol isn't in any section at all, ie, global bss.
3982 Allocate zeroed space for it. */
3983 addr = stgCallocBytes(1, symtab_i->Value,
3984 "ocGetNames_PEi386(non-anonymous bss)");
3985 addSection(oc, SECTIONKIND_RWDATA, addr,
3986 ((UChar*)addr) + symtab_i->Value - 1);
3987 addProddableBlock(oc, addr, symtab_i->Value);
3988 /* debugBelch("BSS section at 0x%x\n", addr); */
3989 }
3990
3991 if (addr != NULL ) {
3992 sname = cstring_from_COFF_symbol_name ( symtab_i->Name, strtab );
3993 /* debugBelch("addSymbol %p `%s \n", addr,sname); */
3994 IF_DEBUG(linker, debugBelch("addSymbol %p `%s'\n", addr,sname);)
3995 ASSERT(i >= 0 && i < oc->n_symbols);
3996 /* cstring_from_COFF_symbol_name always succeeds. */
3997 oc->symbols[i] = (char*)sname;
3998 ghciInsertStrHashTable(oc->fileName, symhash, (char*)sname, addr);
3999 } else {
4000 # if 0
4001 debugBelch(
4002 "IGNORING symbol %d\n"
4003 " name `",
4004 i
4005 );
4006 printName ( symtab_i->Name, strtab );
4007 debugBelch(
4008 "'\n"
4009 " value 0x%x\n"
4010 " 1+sec# %d\n"
4011 " type 0x%x\n"
4012 " sclass 0x%x\n"
4013 " nAux %d\n",
4014 symtab_i->Value,
4015 (Int32)(symtab_i->SectionNumber),
4016 (UInt32)symtab_i->Type,
4017 (UInt32)symtab_i->StorageClass,
4018 (UInt32)symtab_i->NumberOfAuxSymbols
4019 );
4020 # endif