Add support for 512-bit-wide vectors.
[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(hs_init) \
1120 SymI_HasProto(hs_exit) \
1121 SymI_HasProto(hs_set_argv) \
1122 SymI_HasProto(hs_add_root) \
1123 SymI_HasProto(hs_perform_gc) \
1124 SymI_HasProto(hs_lock_stable_tables) \
1125 SymI_HasProto(hs_unlock_stable_tables) \
1126 SymI_HasProto(hs_free_stable_ptr) \
1127 SymI_HasProto(hs_free_stable_ptr_unsafe) \
1128 SymI_HasProto(hs_free_fun_ptr) \
1129 SymI_HasProto(hs_hpc_rootModule) \
1130 SymI_HasProto(hs_hpc_module) \
1131 SymI_HasProto(initLinker) \
1132 SymI_HasProto(stg_unpackClosurezh) \
1133 SymI_HasProto(stg_getApStackValzh) \
1134 SymI_HasProto(stg_getSparkzh) \
1135 SymI_HasProto(stg_numSparkszh) \
1136 SymI_HasProto(stg_isCurrentThreadBoundzh) \
1137 SymI_HasProto(stg_isEmptyMVarzh) \
1138 SymI_HasProto(stg_killThreadzh) \
1139 SymI_HasProto(loadArchive) \
1140 SymI_HasProto(loadObj) \
1141 SymI_HasProto(insertStableSymbol) \
1142 SymI_HasProto(insertSymbol) \
1143 SymI_HasProto(lookupSymbol) \
1144 SymI_HasProto(stg_makeStablePtrzh) \
1145 SymI_HasProto(stg_mkApUpd0zh) \
1146 SymI_HasProto(stg_myThreadIdzh) \
1147 SymI_HasProto(stg_labelThreadzh) \
1148 SymI_HasProto(stg_newArrayzh) \
1149 SymI_HasProto(stg_newArrayArrayzh) \
1150 SymI_HasProto(stg_casArrayzh) \
1151 SymI_HasProto(stg_newBCOzh) \
1152 SymI_HasProto(stg_newByteArrayzh) \
1153 SymI_HasProto(stg_casIntArrayzh) \
1154 SymI_HasProto(stg_fetchAddIntArrayzh) \
1155 SymI_HasProto_redirect(newCAF, newDynCAF) \
1156 SymI_HasProto(stg_newMVarzh) \
1157 SymI_HasProto(stg_newMutVarzh) \
1158 SymI_HasProto(stg_newTVarzh) \
1159 SymI_HasProto(stg_noDuplicatezh) \
1160 SymI_HasProto(stg_atomicModifyMutVarzh) \
1161 SymI_HasProto(stg_casMutVarzh) \
1162 SymI_HasProto(stg_newPinnedByteArrayzh) \
1163 SymI_HasProto(stg_newAlignedPinnedByteArrayzh) \
1164 SymI_HasProto(newSpark) \
1165 SymI_HasProto(performGC) \
1166 SymI_HasProto(performMajorGC) \
1167 SymI_HasProto(prog_argc) \
1168 SymI_HasProto(prog_argv) \
1169 SymI_HasProto(stg_putMVarzh) \
1170 SymI_HasProto(stg_raisezh) \
1171 SymI_HasProto(stg_raiseIOzh) \
1172 SymI_HasProto(stg_readTVarzh) \
1173 SymI_HasProto(stg_readTVarIOzh) \
1174 SymI_HasProto(resumeThread) \
1175 SymI_HasProto(setNumCapabilities) \
1176 SymI_HasProto(getNumberOfProcessors) \
1177 SymI_HasProto(resolveObjs) \
1178 SymI_HasProto(stg_retryzh) \
1179 SymI_HasProto(rts_apply) \
1180 SymI_HasProto(rts_checkSchedStatus) \
1181 SymI_HasProto(rts_eval) \
1182 SymI_HasProto(rts_evalIO) \
1183 SymI_HasProto(rts_evalLazyIO) \
1184 SymI_HasProto(rts_evalStableIO) \
1185 SymI_HasProto(rts_eval_) \
1186 SymI_HasProto(rts_getBool) \
1187 SymI_HasProto(rts_getChar) \
1188 SymI_HasProto(rts_getDouble) \
1189 SymI_HasProto(rts_getFloat) \
1190 SymI_HasProto(rts_getInt) \
1191 SymI_HasProto(rts_getInt8) \
1192 SymI_HasProto(rts_getInt16) \
1193 SymI_HasProto(rts_getInt32) \
1194 SymI_HasProto(rts_getInt64) \
1195 SymI_HasProto(rts_getPtr) \
1196 SymI_HasProto(rts_getFunPtr) \
1197 SymI_HasProto(rts_getStablePtr) \
1198 SymI_HasProto(rts_getThreadId) \
1199 SymI_HasProto(rts_getWord) \
1200 SymI_HasProto(rts_getWord8) \
1201 SymI_HasProto(rts_getWord16) \
1202 SymI_HasProto(rts_getWord32) \
1203 SymI_HasProto(rts_getWord64) \
1204 SymI_HasProto(rts_lock) \
1205 SymI_HasProto(rts_mkBool) \
1206 SymI_HasProto(rts_mkChar) \
1207 SymI_HasProto(rts_mkDouble) \
1208 SymI_HasProto(rts_mkFloat) \
1209 SymI_HasProto(rts_mkInt) \
1210 SymI_HasProto(rts_mkInt8) \
1211 SymI_HasProto(rts_mkInt16) \
1212 SymI_HasProto(rts_mkInt32) \
1213 SymI_HasProto(rts_mkInt64) \
1214 SymI_HasProto(rts_mkPtr) \
1215 SymI_HasProto(rts_mkFunPtr) \
1216 SymI_HasProto(rts_mkStablePtr) \
1217 SymI_HasProto(rts_mkString) \
1218 SymI_HasProto(rts_mkWord) \
1219 SymI_HasProto(rts_mkWord8) \
1220 SymI_HasProto(rts_mkWord16) \
1221 SymI_HasProto(rts_mkWord32) \
1222 SymI_HasProto(rts_mkWord64) \
1223 SymI_HasProto(rts_unlock) \
1224 SymI_HasProto(rts_unsafeGetMyCapability) \
1225 SymI_HasProto(rtsSupportsBoundThreads) \
1226 SymI_HasProto(rts_isProfiled) \
1227 SymI_HasProto(setProgArgv) \
1228 SymI_HasProto(startupHaskell) \
1229 SymI_HasProto(shutdownHaskell) \
1230 SymI_HasProto(shutdownHaskellAndExit) \
1231 SymI_HasProto(stable_name_table) \
1232 SymI_HasProto(stable_ptr_table) \
1233 SymI_HasProto(stackOverflow) \
1234 SymI_HasProto(stg_CAF_BLACKHOLE_info) \
1235 SymI_HasProto(stg_BLACKHOLE_info) \
1236 SymI_HasProto(__stg_EAGER_BLACKHOLE_info) \
1237 SymI_HasProto(stg_BLOCKING_QUEUE_CLEAN_info) \
1238 SymI_HasProto(stg_BLOCKING_QUEUE_DIRTY_info) \
1239 SymI_HasProto(startTimer) \
1240 SymI_HasProto(stg_MVAR_CLEAN_info) \
1241 SymI_HasProto(stg_MVAR_DIRTY_info) \
1242 SymI_HasProto(stg_TVAR_CLEAN_info) \
1243 SymI_HasProto(stg_TVAR_DIRTY_info) \
1244 SymI_HasProto(stg_IND_STATIC_info) \
1245 SymI_HasProto(stg_ARR_WORDS_info) \
1246 SymI_HasProto(stg_MUT_ARR_PTRS_DIRTY_info) \
1247 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN_info) \
1248 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN0_info) \
1249 SymI_HasProto(stg_MUT_VAR_CLEAN_info) \
1250 SymI_HasProto(stg_MUT_VAR_DIRTY_info) \
1251 SymI_HasProto(stg_WEAK_info) \
1252 SymI_HasProto(stg_ap_v_info) \
1253 SymI_HasProto(stg_ap_f_info) \
1254 SymI_HasProto(stg_ap_d_info) \
1255 SymI_HasProto(stg_ap_l_info) \
1256 SymI_HasProto(stg_ap_v16_info) \
1257 SymI_HasProto(stg_ap_v32_info) \
1258 SymI_HasProto(stg_ap_v64_info) \
1259 SymI_HasProto(stg_ap_n_info) \
1260 SymI_HasProto(stg_ap_p_info) \
1261 SymI_HasProto(stg_ap_pv_info) \
1262 SymI_HasProto(stg_ap_pp_info) \
1263 SymI_HasProto(stg_ap_ppv_info) \
1264 SymI_HasProto(stg_ap_ppp_info) \
1265 SymI_HasProto(stg_ap_pppv_info) \
1266 SymI_HasProto(stg_ap_pppp_info) \
1267 SymI_HasProto(stg_ap_ppppp_info) \
1268 SymI_HasProto(stg_ap_pppppp_info) \
1269 SymI_HasProto(stg_ap_0_fast) \
1270 SymI_HasProto(stg_ap_v_fast) \
1271 SymI_HasProto(stg_ap_f_fast) \
1272 SymI_HasProto(stg_ap_d_fast) \
1273 SymI_HasProto(stg_ap_l_fast) \
1274 SymI_HasProto(stg_ap_v16_fast) \
1275 SymI_HasProto(stg_ap_v32_fast) \
1276 SymI_HasProto(stg_ap_v64_fast) \
1277 SymI_HasProto(stg_ap_n_fast) \
1278 SymI_HasProto(stg_ap_p_fast) \
1279 SymI_HasProto(stg_ap_pv_fast) \
1280 SymI_HasProto(stg_ap_pp_fast) \
1281 SymI_HasProto(stg_ap_ppv_fast) \
1282 SymI_HasProto(stg_ap_ppp_fast) \
1283 SymI_HasProto(stg_ap_pppv_fast) \
1284 SymI_HasProto(stg_ap_pppp_fast) \
1285 SymI_HasProto(stg_ap_ppppp_fast) \
1286 SymI_HasProto(stg_ap_pppppp_fast) \
1287 SymI_HasProto(stg_ap_1_upd_info) \
1288 SymI_HasProto(stg_ap_2_upd_info) \
1289 SymI_HasProto(stg_ap_3_upd_info) \
1290 SymI_HasProto(stg_ap_4_upd_info) \
1291 SymI_HasProto(stg_ap_5_upd_info) \
1292 SymI_HasProto(stg_ap_6_upd_info) \
1293 SymI_HasProto(stg_ap_7_upd_info) \
1294 SymI_HasProto(stg_exit) \
1295 SymI_HasProto(stg_sel_0_upd_info) \
1296 SymI_HasProto(stg_sel_1_upd_info) \
1297 SymI_HasProto(stg_sel_2_upd_info) \
1298 SymI_HasProto(stg_sel_3_upd_info) \
1299 SymI_HasProto(stg_sel_4_upd_info) \
1300 SymI_HasProto(stg_sel_5_upd_info) \
1301 SymI_HasProto(stg_sel_6_upd_info) \
1302 SymI_HasProto(stg_sel_7_upd_info) \
1303 SymI_HasProto(stg_sel_8_upd_info) \
1304 SymI_HasProto(stg_sel_9_upd_info) \
1305 SymI_HasProto(stg_sel_10_upd_info) \
1306 SymI_HasProto(stg_sel_11_upd_info) \
1307 SymI_HasProto(stg_sel_12_upd_info) \
1308 SymI_HasProto(stg_sel_13_upd_info) \
1309 SymI_HasProto(stg_sel_14_upd_info) \
1310 SymI_HasProto(stg_sel_15_upd_info) \
1311 SymI_HasProto(stg_sel_0_noupd_info) \
1312 SymI_HasProto(stg_sel_1_noupd_info) \
1313 SymI_HasProto(stg_sel_2_noupd_info) \
1314 SymI_HasProto(stg_sel_3_noupd_info) \
1315 SymI_HasProto(stg_sel_4_noupd_info) \
1316 SymI_HasProto(stg_sel_5_noupd_info) \
1317 SymI_HasProto(stg_sel_6_noupd_info) \
1318 SymI_HasProto(stg_sel_7_noupd_info) \
1319 SymI_HasProto(stg_sel_8_noupd_info) \
1320 SymI_HasProto(stg_sel_9_noupd_info) \
1321 SymI_HasProto(stg_sel_10_noupd_info) \
1322 SymI_HasProto(stg_sel_11_noupd_info) \
1323 SymI_HasProto(stg_sel_12_noupd_info) \
1324 SymI_HasProto(stg_sel_13_noupd_info) \
1325 SymI_HasProto(stg_sel_14_noupd_info) \
1326 SymI_HasProto(stg_sel_15_noupd_info) \
1327 SymI_HasProto(stg_upd_frame_info) \
1328 SymI_HasProto(stg_bh_upd_frame_info) \
1329 SymI_HasProto(suspendThread) \
1330 SymI_HasProto(stg_takeMVarzh) \
1331 SymI_HasProto(stg_readMVarzh) \
1332 SymI_HasProto(stg_threadStatuszh) \
1333 SymI_HasProto(stg_tryPutMVarzh) \
1334 SymI_HasProto(stg_tryTakeMVarzh) \
1335 SymI_HasProto(stg_tryReadMVarzh) \
1336 SymI_HasProto(stg_unmaskAsyncExceptionszh) \
1337 SymI_HasProto(unloadObj) \
1338 SymI_HasProto(stg_unsafeThawArrayzh) \
1339 SymI_HasProto(stg_waitReadzh) \
1340 SymI_HasProto(stg_waitWritezh) \
1341 SymI_HasProto(stg_writeTVarzh) \
1342 SymI_HasProto(stg_yieldzh) \
1343 SymI_NeedsProto(stg_interp_constr_entry) \
1344 SymI_HasProto(stg_arg_bitmaps) \
1345 SymI_HasProto(large_alloc_lim) \
1346 SymI_HasProto(g0) \
1347 SymI_HasProto(allocate) \
1348 SymI_HasProto(allocateExec) \
1349 SymI_HasProto(freeExec) \
1350 SymI_HasProto(getAllocations) \
1351 SymI_HasProto(revertCAFs) \
1352 SymI_HasProto(RtsFlags) \
1353 SymI_NeedsProto(rts_breakpoint_io_action) \
1354 SymI_NeedsProto(rts_stop_next_breakpoint) \
1355 SymI_NeedsProto(rts_stop_on_exception) \
1356 SymI_HasProto(stopTimer) \
1357 SymI_HasProto(n_capabilities) \
1358 SymI_HasProto(enabled_capabilities) \
1359 SymI_HasProto(stg_traceCcszh) \
1360 SymI_HasProto(stg_traceEventzh) \
1361 SymI_HasProto(stg_traceMarkerzh) \
1362 SymI_HasProto(getMonotonicNSec) \
1363 SymI_HasProto(lockFile) \
1364 SymI_HasProto(unlockFile) \
1365 SymI_HasProto(startProfTimer) \
1366 SymI_HasProto(stopProfTimer) \
1367 SymI_HasProto(atomic_inc) \
1368 SymI_HasProto(atomic_dec) \
1369 RTS_USER_SIGNALS_SYMBOLS \
1370 RTS_INTCHAR_SYMBOLS
1371
1372
1373 // 64-bit support functions in libgcc.a
1374 #if defined(__GNUC__) && SIZEOF_VOID_P <= 4 && !defined(_ABIN32)
1375 #define RTS_LIBGCC_SYMBOLS \
1376 SymI_NeedsProto(__divdi3) \
1377 SymI_NeedsProto(__udivdi3) \
1378 SymI_NeedsProto(__moddi3) \
1379 SymI_NeedsProto(__umoddi3) \
1380 SymI_NeedsProto(__muldi3) \
1381 SymI_NeedsProto(__ashldi3) \
1382 SymI_NeedsProto(__ashrdi3) \
1383 SymI_NeedsProto(__lshrdi3) \
1384 SymI_NeedsProto(__fixunsdfdi)
1385 #else
1386 #define RTS_LIBGCC_SYMBOLS
1387 #endif
1388
1389 #if defined(darwin_HOST_OS) && defined(powerpc_HOST_ARCH)
1390 // Symbols that don't have a leading underscore
1391 // on Mac OS X. They have to receive special treatment,
1392 // see machoInitSymbolsWithoutUnderscore()
1393 #define RTS_MACHO_NOUNDERLINE_SYMBOLS \
1394 SymI_NeedsProto(saveFP) \
1395 SymI_NeedsProto(restFP)
1396 #endif
1397
1398 /* entirely bogus claims about types of these symbols */
1399 #define SymI_NeedsProto(vvv) extern void vvv(void);
1400 #if defined(COMPILING_WINDOWS_DLL)
1401 #define SymE_HasProto(vvv) SymE_HasProto(vvv);
1402 # if defined(x86_64_HOST_ARCH)
1403 # define SymE_NeedsProto(vvv) extern void __imp_ ## vvv (void);
1404 # else
1405 # define SymE_NeedsProto(vvv) extern void _imp__ ## vvv (void);
1406 # endif
1407 #else
1408 #define SymE_NeedsProto(vvv) SymI_NeedsProto(vvv);
1409 #define SymE_HasProto(vvv) SymI_HasProto(vvv)
1410 #endif
1411 #define SymI_HasProto(vvv) /**/
1412 #define SymI_HasProto_redirect(vvv,xxx) /**/
1413 RTS_SYMBOLS
1414 RTS_RET_SYMBOLS
1415 RTS_POSIX_ONLY_SYMBOLS
1416 RTS_MINGW_ONLY_SYMBOLS
1417 RTS_CYGWIN_ONLY_SYMBOLS
1418 RTS_DARWIN_ONLY_SYMBOLS
1419 RTS_LIBGCC_SYMBOLS
1420 RTS_LIBFFI_SYMBOLS
1421 #undef SymI_NeedsProto
1422 #undef SymI_HasProto
1423 #undef SymI_HasProto_redirect
1424 #undef SymE_HasProto
1425 #undef SymE_NeedsProto
1426
1427 #ifdef LEADING_UNDERSCORE
1428 #define MAYBE_LEADING_UNDERSCORE_STR(s) ("_" s)
1429 #else
1430 #define MAYBE_LEADING_UNDERSCORE_STR(s) (s)
1431 #endif
1432
1433 #define SymI_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1434 (void*)(&(vvv)) },
1435 #define SymE_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1436 (void*)DLL_IMPORT_DATA_REF(vvv) },
1437
1438 #define SymI_NeedsProto(vvv) SymI_HasProto(vvv)
1439 #define SymE_NeedsProto(vvv) SymE_HasProto(vvv)
1440
1441 // SymI_HasProto_redirect allows us to redirect references to one symbol to
1442 // another symbol. See newCAF/newDynCAF for an example.
1443 #define SymI_HasProto_redirect(vvv,xxx) \
1444 { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1445 (void*)(&(xxx)) },
1446
1447 static RtsSymbolVal rtsSyms[] = {
1448 RTS_SYMBOLS
1449 RTS_RET_SYMBOLS
1450 RTS_POSIX_ONLY_SYMBOLS
1451 RTS_MINGW_ONLY_SYMBOLS
1452 RTS_CYGWIN_ONLY_SYMBOLS
1453 RTS_DARWIN_ONLY_SYMBOLS
1454 RTS_LIBGCC_SYMBOLS
1455 RTS_LIBFFI_SYMBOLS
1456 #if defined(darwin_HOST_OS) && defined(i386_HOST_ARCH)
1457 // dyld stub code contains references to this,
1458 // but it should never be called because we treat
1459 // lazy pointers as nonlazy.
1460 { "dyld_stub_binding_helper", (void*)0xDEADBEEF },
1461 #endif
1462 { 0, 0 } /* sentinel */
1463 };
1464
1465
1466 /* -----------------------------------------------------------------------------
1467 * Insert symbols into hash tables, checking for duplicates.
1468 */
1469
1470 static void ghciInsertStrHashTable ( pathchar* obj_name,
1471 HashTable *table,
1472 char* key,
1473 void *data
1474 )
1475 {
1476 if (lookupHashTable(table, (StgWord)key) == NULL)
1477 {
1478 insertStrHashTable(table, (StgWord)key, data);
1479 return;
1480 }
1481 debugBelch(
1482 "\n\n"
1483 "GHCi runtime linker: fatal error: I found a duplicate definition for symbol\n"
1484 " %s\n"
1485 "whilst processing object file\n"
1486 " %" PATH_FMT "\n"
1487 "This could be caused by:\n"
1488 " * Loading two different object files which export the same symbol\n"
1489 " * Specifying the same object file twice on the GHCi command line\n"
1490 " * An incorrect `package.conf' entry, causing some object to be\n"
1491 " loaded twice.\n"
1492 "GHCi cannot safely continue in this situation. Exiting now. Sorry.\n"
1493 "\n",
1494 (char*)key,
1495 obj_name
1496 );
1497 stg_exit(1);
1498 }
1499 /* -----------------------------------------------------------------------------
1500 * initialize the object linker
1501 */
1502
1503
1504 static int linker_init_done = 0 ;
1505
1506 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1507 static void *dl_prog_handle;
1508 static regex_t re_invalid;
1509 static regex_t re_realso;
1510 #ifdef THREADED_RTS
1511 static Mutex dl_mutex; // mutex to protect dlopen/dlerror critical section
1512 #endif
1513 #endif
1514
1515 void
1516 initLinker( void )
1517 {
1518 RtsSymbolVal *sym;
1519 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1520 int compileResult;
1521 #endif
1522
1523 IF_DEBUG(linker, debugBelch("initLinker: start\n"));
1524
1525 /* Make initLinker idempotent, so we can call it
1526 before every relevant operation; that means we
1527 don't need to initialise the linker separately */
1528 if (linker_init_done == 1) {
1529 IF_DEBUG(linker, debugBelch("initLinker: idempotent return\n"));
1530 return;
1531 } else {
1532 linker_init_done = 1;
1533 }
1534
1535 objects = NULL;
1536 unloaded_objects = NULL;
1537
1538 #if defined(THREADED_RTS) && (defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO))
1539 initMutex(&dl_mutex);
1540 #endif
1541 stablehash = allocStrHashTable();
1542 symhash = allocStrHashTable();
1543
1544 /* populate the symbol table with stuff from the RTS */
1545 for (sym = rtsSyms; sym->lbl != NULL; sym++) {
1546 ghciInsertStrHashTable(WSTR("(GHCi built-in symbols)"),
1547 symhash, sym->lbl, sym->addr);
1548 IF_DEBUG(linker, debugBelch("initLinker: inserting rts symbol %s, %p\n", sym->lbl, sym->addr));
1549 }
1550 # if defined(OBJFORMAT_MACHO) && defined(powerpc_HOST_ARCH)
1551 machoInitSymbolsWithoutUnderscore();
1552 # endif
1553
1554 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1555 # if defined(RTLD_DEFAULT)
1556 dl_prog_handle = RTLD_DEFAULT;
1557 # else
1558 dl_prog_handle = dlopen(NULL, RTLD_LAZY);
1559 # endif /* RTLD_DEFAULT */
1560
1561 compileResult = regcomp(&re_invalid,
1562 "(([^ \t()])+\\.so([^ \t:()])*):([ \t])*(invalid ELF header|file too short)",
1563 REG_EXTENDED);
1564 if (compileResult != 0) {
1565 barf("Compiling re_invalid failed");
1566 }
1567 compileResult = regcomp(&re_realso,
1568 "(GROUP|INPUT) *\\( *([^ )]+)",
1569 REG_EXTENDED);
1570 if (compileResult != 0) {
1571 barf("Compiling re_realso failed");
1572 }
1573 # endif
1574
1575 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1576 if (RtsFlags.MiscFlags.linkerMemBase != 0) {
1577 // User-override for mmap_32bit_base
1578 mmap_32bit_base = (void*)RtsFlags.MiscFlags.linkerMemBase;
1579 }
1580 #endif
1581
1582 #if defined(mingw32_HOST_OS)
1583 /*
1584 * These two libraries cause problems when added to the static link,
1585 * but are necessary for resolving symbols in GHCi, hence we load
1586 * them manually here.
1587 */
1588 addDLL(WSTR("msvcrt"));
1589 addDLL(WSTR("kernel32"));
1590 #endif
1591
1592 IF_DEBUG(linker, debugBelch("initLinker: done\n"));
1593 return;
1594 }
1595
1596 void
1597 exitLinker( void ) {
1598 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1599 if (linker_init_done == 1) {
1600 regfree(&re_invalid);
1601 regfree(&re_realso);
1602 #ifdef THREADED_RTS
1603 closeMutex(&dl_mutex);
1604 #endif
1605 }
1606 #endif
1607 }
1608
1609 /* -----------------------------------------------------------------------------
1610 * Loading DLL or .so dynamic libraries
1611 * -----------------------------------------------------------------------------
1612 *
1613 * Add a DLL from which symbols may be found. In the ELF case, just
1614 * do RTLD_GLOBAL-style add, so no further messing around needs to
1615 * happen in order that symbols in the loaded .so are findable --
1616 * lookupSymbol() will subsequently see them by dlsym on the program's
1617 * dl-handle. Returns NULL if success, otherwise ptr to an err msg.
1618 *
1619 * In the PEi386 case, open the DLLs and put handles to them in a
1620 * linked list. When looking for a symbol, try all handles in the
1621 * list. This means that we need to load even DLLs that are guaranteed
1622 * to be in the ghc.exe image already, just so we can get a handle
1623 * to give to loadSymbol, so that we can find the symbols. For such
1624 * libraries, the LoadLibrary call should be a no-op except for returning
1625 * the handle.
1626 *
1627 */
1628
1629 #if defined(OBJFORMAT_PEi386)
1630 /* A record for storing handles into DLLs. */
1631
1632 typedef
1633 struct _OpenedDLL {
1634 pathchar* name;
1635 struct _OpenedDLL* next;
1636 HINSTANCE instance;
1637 }
1638 OpenedDLL;
1639
1640 /* A list thereof. */
1641 static OpenedDLL* opened_dlls = NULL;
1642 #endif
1643
1644 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1645
1646 /* Suppose in ghci we load a temporary SO for a module containing
1647 f = 1
1648 and then modify the module, recompile, and load another temporary
1649 SO with
1650 f = 2
1651 Then as we don't unload the first SO, dlsym will find the
1652 f = 1
1653 symbol whereas we want the
1654 f = 2
1655 symbol. We therefore need to keep our own SO handle list, and
1656 try SOs in the right order. */
1657
1658 typedef
1659 struct _OpenedSO {
1660 struct _OpenedSO* next;
1661 void *handle;
1662 }
1663 OpenedSO;
1664
1665 /* A list thereof. */
1666 static OpenedSO* openedSOs = NULL;
1667
1668 static const char *
1669 internal_dlopen(const char *dll_name)
1670 {
1671 OpenedSO* o_so;
1672 void *hdl;
1673 const char *errmsg;
1674 char *errmsg_copy;
1675
1676 // omitted: RTLD_NOW
1677 // see http://www.haskell.org/pipermail/cvs-ghc/2007-September/038570.html
1678 IF_DEBUG(linker,
1679 debugBelch("internal_dlopen: dll_name = '%s'\n", dll_name));
1680
1681 //-------------- Begin critical section ------------------
1682 // This critical section is necessary because dlerror() is not
1683 // required to be reentrant (see POSIX -- IEEE Std 1003.1-2008)
1684 // Also, the error message returned must be copied to preserve it
1685 // (see POSIX also)
1686
1687 ACQUIRE_LOCK(&dl_mutex);
1688 hdl = dlopen(dll_name, RTLD_LAZY | RTLD_GLOBAL);
1689
1690 errmsg = NULL;
1691 if (hdl == NULL) {
1692 /* dlopen failed; return a ptr to the error msg. */
1693 errmsg = dlerror();
1694 if (errmsg == NULL) errmsg = "addDLL: unknown error";
1695 errmsg_copy = stgMallocBytes(strlen(errmsg)+1, "addDLL");
1696 strcpy(errmsg_copy, errmsg);
1697 errmsg = errmsg_copy;
1698 }
1699 o_so = stgMallocBytes(sizeof(OpenedSO), "addDLL");
1700 o_so->handle = hdl;
1701 o_so->next = openedSOs;
1702 openedSOs = o_so;
1703
1704 RELEASE_LOCK(&dl_mutex);
1705 //--------------- End critical section -------------------
1706
1707 return errmsg;
1708 }
1709
1710 static void *
1711 internal_dlsym(void *hdl, const char *symbol) {
1712 OpenedSO* o_so;
1713 void *v;
1714
1715 // We acquire dl_mutex as concurrent dl* calls may alter dlerror
1716 ACQUIRE_LOCK(&dl_mutex);
1717 dlerror();
1718 for (o_so = openedSOs; o_so != NULL; o_so = o_so->next) {
1719 v = dlsym(o_so->handle, symbol);
1720 if (dlerror() == NULL) {
1721 RELEASE_LOCK(&dl_mutex);
1722 return v;
1723 }
1724 }
1725 v = dlsym(hdl, symbol);
1726 RELEASE_LOCK(&dl_mutex);
1727 return v;
1728 }
1729 # endif
1730
1731 const char *
1732 addDLL( pathchar *dll_name )
1733 {
1734 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1735 /* ------------------- ELF DLL loader ------------------- */
1736
1737 #define NMATCH 5
1738 regmatch_t match[NMATCH];
1739 const char *errmsg;
1740 FILE* fp;
1741 size_t match_length;
1742 #define MAXLINE 1000
1743 char line[MAXLINE];
1744 int result;
1745
1746 initLinker();
1747
1748 IF_DEBUG(linker, debugBelch("addDLL: dll_name = '%s'\n", dll_name));
1749 errmsg = internal_dlopen(dll_name);
1750
1751 if (errmsg == NULL) {
1752 return NULL;
1753 }
1754
1755 // GHC Trac ticket #2615
1756 // On some systems (e.g., Gentoo Linux) dynamic files (e.g. libc.so)
1757 // contain linker scripts rather than ELF-format object code. This
1758 // code handles the situation by recognizing the real object code
1759 // file name given in the linker script.
1760 //
1761 // If an "invalid ELF header" error occurs, it is assumed that the
1762 // .so file contains a linker script instead of ELF object code.
1763 // In this case, the code looks for the GROUP ( ... ) linker
1764 // directive. If one is found, the first file name inside the
1765 // parentheses is treated as the name of a dynamic library and the
1766 // code attempts to dlopen that file. If this is also unsuccessful,
1767 // an error message is returned.
1768
1769 // see if the error message is due to an invalid ELF header
1770 IF_DEBUG(linker, debugBelch("errmsg = '%s'\n", errmsg));
1771 result = regexec(&re_invalid, errmsg, (size_t) NMATCH, match, 0);
1772 IF_DEBUG(linker, debugBelch("result = %i\n", result));
1773 if (result == 0) {
1774 // success -- try to read the named file as a linker script
1775 match_length = (size_t) stg_min((match[1].rm_eo - match[1].rm_so),
1776 MAXLINE-1);
1777 strncpy(line, (errmsg+(match[1].rm_so)),match_length);
1778 line[match_length] = '\0'; // make sure string is null-terminated
1779 IF_DEBUG(linker, debugBelch ("file name = '%s'\n", line));
1780 if ((fp = fopen(line, "r")) == NULL) {
1781 return errmsg; // return original error if open fails
1782 }
1783 // try to find a GROUP or INPUT ( ... ) command
1784 while (fgets(line, MAXLINE, fp) != NULL) {
1785 IF_DEBUG(linker, debugBelch("input line = %s", line));
1786 if (regexec(&re_realso, line, (size_t) NMATCH, match, 0) == 0) {
1787 // success -- try to dlopen the first named file
1788 IF_DEBUG(linker, debugBelch("match%s\n",""));
1789 line[match[2].rm_eo] = '\0';
1790 errmsg = internal_dlopen(line+match[2].rm_so);
1791 break;
1792 }
1793 // if control reaches here, no GROUP or INPUT ( ... ) directive
1794 // was found and the original error message is returned to the
1795 // caller
1796 }
1797 fclose(fp);
1798 }
1799 return errmsg;
1800
1801 # elif defined(OBJFORMAT_PEi386)
1802 /* ------------------- Win32 DLL loader ------------------- */
1803
1804 pathchar* buf;
1805 OpenedDLL* o_dll;
1806 HINSTANCE instance;
1807
1808 initLinker();
1809
1810 /* debugBelch("\naddDLL; dll_name = `%s'\n", dll_name); */
1811
1812 /* See if we've already got it, and ignore if so. */
1813 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
1814 if (0 == pathcmp(o_dll->name, dll_name))
1815 return NULL;
1816 }
1817
1818 /* The file name has no suffix (yet) so that we can try
1819 both foo.dll and foo.drv
1820
1821 The documentation for LoadLibrary says:
1822 If no file name extension is specified in the lpFileName
1823 parameter, the default library extension .dll is
1824 appended. However, the file name string can include a trailing
1825 point character (.) to indicate that the module name has no
1826 extension. */
1827
1828 buf = stgMallocBytes((pathlen(dll_name) + 10) * sizeof(wchar_t), "addDLL");
1829 swprintf(buf, L"%s.DLL", dll_name);
1830 instance = LoadLibraryW(buf);
1831 if (instance == NULL) {
1832 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1833 // KAA: allow loading of drivers (like winspool.drv)
1834 swprintf(buf, L"%s.DRV", dll_name);
1835 instance = LoadLibraryW(buf);
1836 if (instance == NULL) {
1837 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1838 // #1883: allow loading of unix-style libfoo.dll DLLs
1839 swprintf(buf, L"lib%s.DLL", dll_name);
1840 instance = LoadLibraryW(buf);
1841 if (instance == NULL) {
1842 goto error;
1843 }
1844 }
1845 }
1846 stgFree(buf);
1847
1848 /* Add this DLL to the list of DLLs in which to search for symbols. */
1849 o_dll = stgMallocBytes( sizeof(OpenedDLL), "addDLL" );
1850 o_dll->name = pathdup(dll_name);
1851 o_dll->instance = instance;
1852 o_dll->next = opened_dlls;
1853 opened_dlls = o_dll;
1854
1855 return NULL;
1856
1857 error:
1858 stgFree(buf);
1859 sysErrorBelch("%" PATH_FMT, dll_name);
1860
1861 /* LoadLibrary failed; return a ptr to the error msg. */
1862 return "addDLL: could not load DLL";
1863
1864 # else
1865 barf("addDLL: not implemented on this platform");
1866 # endif
1867 }
1868
1869 /* -----------------------------------------------------------------------------
1870 * insert a stable symbol in the hash table
1871 */
1872
1873 void
1874 insertStableSymbol(pathchar* obj_name, char* key, StgPtr p)
1875 {
1876 ghciInsertStrHashTable(obj_name, stablehash, key, getStablePtr(p));
1877 }
1878
1879
1880 /* -----------------------------------------------------------------------------
1881 * insert a symbol in the hash table
1882 */
1883 void
1884 insertSymbol(pathchar* obj_name, char* key, void* data)
1885 {
1886 ghciInsertStrHashTable(obj_name, symhash, key, data);
1887 }
1888
1889 /* -----------------------------------------------------------------------------
1890 * lookup a symbol in the hash table
1891 */
1892 void *
1893 lookupSymbol( char *lbl )
1894 {
1895 void *val;
1896 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s\n", lbl));
1897 initLinker() ;
1898 ASSERT(symhash != NULL);
1899 val = lookupStrHashTable(symhash, lbl);
1900
1901 if (val == NULL) {
1902 IF_DEBUG(linker, debugBelch("lookupSymbol: symbol not found\n"));
1903 # if defined(OBJFORMAT_ELF)
1904 return internal_dlsym(dl_prog_handle, lbl);
1905 # elif defined(OBJFORMAT_MACHO)
1906 # if HAVE_DLFCN_H
1907 /* On OS X 10.3 and later, we use dlsym instead of the old legacy
1908 interface.
1909
1910 HACK: On OS X, all symbols are prefixed with an underscore.
1911 However, dlsym wants us to omit the leading underscore from the
1912 symbol name -- the dlsym routine puts it back on before searching
1913 for the symbol. For now, we simply strip it off here (and ONLY
1914 here).
1915 */
1916 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s with dlsym\n", lbl));
1917 ASSERT(lbl[0] == '_');
1918 return internal_dlsym(dl_prog_handle, lbl + 1);
1919 # else
1920 if (NSIsSymbolNameDefined(lbl)) {
1921 NSSymbol symbol = NSLookupAndBindSymbol(lbl);
1922 return NSAddressOfSymbol(symbol);
1923 } else {
1924 return NULL;
1925 }
1926 # endif /* HAVE_DLFCN_H */
1927 # elif defined(OBJFORMAT_PEi386)
1928 void* sym;
1929
1930 sym = lookupSymbolInDLLs((unsigned char*)lbl);
1931 if (sym != NULL) { return sym; };
1932
1933 // Also try looking up the symbol without the @N suffix. Some
1934 // DLLs have the suffixes on their symbols, some don't.
1935 zapTrailingAtSign ( (unsigned char*)lbl );
1936 sym = lookupSymbolInDLLs((unsigned char*)lbl);
1937 if (sym != NULL) { return sym; };
1938 return NULL;
1939
1940 # else
1941 ASSERT(2+2 == 5);
1942 return NULL;
1943 # endif
1944 } else {
1945 IF_DEBUG(linker, debugBelch("lookupSymbol: value of %s is %p\n", lbl, val));
1946 return val;
1947 }
1948 }
1949
1950 /* -----------------------------------------------------------------------------
1951 * Debugging aid: look in GHCi's object symbol tables for symbols
1952 * within DELTA bytes of the specified address, and show their names.
1953 */
1954 #ifdef DEBUG
1955 void ghci_enquire ( char* addr );
1956
1957 void ghci_enquire ( char* addr )
1958 {
1959 int i;
1960 char* sym;
1961 char* a;
1962 const int DELTA = 64;
1963 ObjectCode* oc;
1964
1965 initLinker();
1966
1967 for (oc = objects; oc; oc = oc->next) {
1968 for (i = 0; i < oc->n_symbols; i++) {
1969 sym = oc->symbols[i];
1970 if (sym == NULL) continue;
1971 a = NULL;
1972 if (a == NULL) {
1973 a = lookupStrHashTable(symhash, sym);
1974 }
1975 if (a == NULL) {
1976 // debugBelch("ghci_enquire: can't find %s\n", sym);
1977 }
1978 else if (addr-DELTA <= a && a <= addr+DELTA) {
1979 debugBelch("%p + %3d == `%s'\n", addr, (int)(a - addr), sym);
1980 }
1981 }
1982 }
1983 }
1984 #endif
1985
1986 #ifdef USE_MMAP
1987 #define ROUND_UP(x,size) ((x + size - 1) & ~(size - 1))
1988
1989 static void *
1990 mmapForLinker (size_t bytes, nat flags, int fd)
1991 {
1992 void *map_addr = NULL;
1993 void *result;
1994 int pagesize, size;
1995 static nat fixed = 0;
1996
1997 IF_DEBUG(linker, debugBelch("mmapForLinker: start\n"));
1998 pagesize = getpagesize();
1999 size = ROUND_UP(bytes, pagesize);
2000
2001 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2002 mmap_again:
2003
2004 if (mmap_32bit_base != 0) {
2005 map_addr = mmap_32bit_base;
2006 }
2007 #endif
2008
2009 IF_DEBUG(linker, debugBelch("mmapForLinker: \tprotection %#0x\n", PROT_EXEC | PROT_READ | PROT_WRITE));
2010 IF_DEBUG(linker, debugBelch("mmapForLinker: \tflags %#0x\n", MAP_PRIVATE | TRY_MAP_32BIT | fixed | flags));
2011 result = mmap(map_addr, size, PROT_EXEC|PROT_READ|PROT_WRITE,
2012 MAP_PRIVATE|TRY_MAP_32BIT|fixed|flags, fd, 0);
2013
2014 if (result == MAP_FAILED) {
2015 sysErrorBelch("mmap %" FMT_Word " bytes at %p",(W_)size,map_addr);
2016 errorBelch("Try specifying an address with +RTS -xm<addr> -RTS");
2017 stg_exit(EXIT_FAILURE);
2018 }
2019
2020 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2021 if (mmap_32bit_base != 0) {
2022 if (result == map_addr) {
2023 mmap_32bit_base = (StgWord8*)map_addr + size;
2024 } else {
2025 if ((W_)result > 0x80000000) {
2026 // oops, we were given memory over 2Gb
2027 #if defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS)
2028 // Some platforms require MAP_FIXED. This is normally
2029 // a bad idea, because MAP_FIXED will overwrite
2030 // existing mappings.
2031 munmap(result,size);
2032 fixed = MAP_FIXED;
2033 goto mmap_again;
2034 #else
2035 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);
2036 #endif
2037 } else {
2038 // hmm, we were given memory somewhere else, but it's
2039 // still under 2Gb so we can use it. Next time, ask
2040 // for memory right after the place we just got some
2041 mmap_32bit_base = (StgWord8*)result + size;
2042 }
2043 }
2044 } else {
2045 if ((W_)result > 0x80000000) {
2046 // oops, we were given memory over 2Gb
2047 // ... try allocating memory somewhere else?;
2048 debugTrace(DEBUG_linker,"MAP_32BIT didn't work; gave us %lu bytes at 0x%p", bytes, result);
2049 munmap(result, size);
2050
2051 // Set a base address and try again... (guess: 1Gb)
2052 mmap_32bit_base = (void*)0x40000000;
2053 goto mmap_again;
2054 }
2055 }
2056 #endif
2057
2058 IF_DEBUG(linker, debugBelch("mmapForLinker: mapped %" FMT_Word " bytes starting at %p\n", (W_)size, result));
2059 IF_DEBUG(linker, debugBelch("mmapForLinker: done\n"));
2060 return result;
2061 }
2062 #endif // USE_MMAP
2063
2064
2065 void freeObjectCode (ObjectCode *oc)
2066 {
2067 #ifdef USE_MMAP
2068 int pagesize, size, r;
2069
2070 pagesize = getpagesize();
2071 size = ROUND_UP(oc->fileSize, pagesize);
2072
2073 r = munmap(oc->image, size);
2074 if (r == -1) {
2075 sysErrorBelch("munmap");
2076 }
2077
2078 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2079 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2080 if (!USE_CONTIGUOUS_MMAP)
2081 {
2082 munmap(oc->symbol_extras,
2083 ROUND_UP(sizeof(SymbolExtra) * oc->n_symbol_extras, pagesize));
2084 }
2085 #endif
2086 #endif
2087
2088 #else
2089
2090 stgFree(oc->image);
2091
2092 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2093 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2094 stgFree(oc->symbol_extras);
2095 #endif
2096 #endif
2097
2098 #endif
2099
2100 stgFree(oc->fileName);
2101 stgFree(oc->archiveMemberName);
2102 stgFree(oc);
2103 }
2104
2105
2106 static ObjectCode*
2107 mkOc( pathchar *path, char *image, int imageSize,
2108 char *archiveMemberName
2109 #ifndef USE_MMAP
2110 #ifdef darwin_HOST_OS
2111 , int misalignment
2112 #endif
2113 #endif
2114 ) {
2115 ObjectCode* oc;
2116
2117 IF_DEBUG(linker, debugBelch("mkOc: start\n"));
2118 oc = stgMallocBytes(sizeof(ObjectCode), "loadArchive(oc)");
2119
2120 # if defined(OBJFORMAT_ELF)
2121 oc->formatName = "ELF";
2122 # elif defined(OBJFORMAT_PEi386)
2123 oc->formatName = "PEi386";
2124 # elif defined(OBJFORMAT_MACHO)
2125 oc->formatName = "Mach-O";
2126 # else
2127 stgFree(oc);
2128 barf("loadObj: not implemented on this platform");
2129 # endif
2130
2131 oc->image = image;
2132 oc->fileName = pathdup(path);
2133
2134 if (archiveMemberName) {
2135 oc->archiveMemberName = stgMallocBytes( strlen(archiveMemberName)+1, "loadObj" );
2136 strcpy(oc->archiveMemberName, archiveMemberName);
2137 }
2138 else {
2139 oc->archiveMemberName = NULL;
2140 }
2141
2142 oc->fileSize = imageSize;
2143 oc->symbols = NULL;
2144 oc->sections = NULL;
2145 oc->proddables = NULL;
2146
2147 #ifndef USE_MMAP
2148 #ifdef darwin_HOST_OS
2149 oc->misalignment = misalignment;
2150 #endif
2151 #endif
2152
2153 /* chain it onto the list of objects */
2154 oc->next = objects;
2155 objects = oc;
2156
2157 IF_DEBUG(linker, debugBelch("mkOc: done\n"));
2158 return oc;
2159 }
2160
2161 HsInt
2162 loadArchive( pathchar *path )
2163 {
2164 ObjectCode* oc;
2165 char *image;
2166 int memberSize;
2167 FILE *f;
2168 int n;
2169 size_t thisFileNameSize;
2170 char *fileName;
2171 size_t fileNameSize;
2172 int isObject, isGnuIndex;
2173 char tmp[20];
2174 char *gnuFileIndex;
2175 int gnuFileIndexSize;
2176 #if defined(darwin_HOST_OS)
2177 int i;
2178 uint32_t nfat_arch, nfat_offset, cputype, cpusubtype;
2179 #if defined(i386_HOST_ARCH)
2180 const uint32_t mycputype = CPU_TYPE_X86;
2181 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_ALL;
2182 #elif defined(x86_64_HOST_ARCH)
2183 const uint32_t mycputype = CPU_TYPE_X86_64;
2184 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_64_ALL;
2185 #elif defined(powerpc_HOST_ARCH)
2186 const uint32_t mycputype = CPU_TYPE_POWERPC;
2187 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2188 #elif defined(powerpc64_HOST_ARCH)
2189 const uint32_t mycputype = CPU_TYPE_POWERPC64;
2190 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2191 #else
2192 #error Unknown Darwin architecture
2193 #endif
2194 #if !defined(USE_MMAP)
2195 int misalignment;
2196 #endif
2197 #endif
2198
2199 IF_DEBUG(linker, debugBelch("loadArchive: start\n"));
2200 IF_DEBUG(linker, debugBelch("loadArchive: Loading archive `%" PATH_FMT" '\n", path));
2201
2202 gnuFileIndex = NULL;
2203 gnuFileIndexSize = 0;
2204
2205 fileNameSize = 32;
2206 fileName = stgMallocBytes(fileNameSize, "loadArchive(fileName)");
2207
2208 f = pathopen(path, WSTR("rb"));
2209 if (!f)
2210 barf("loadObj: can't read `%s'", path);
2211
2212 /* Check if this is an archive by looking for the magic "!<arch>\n"
2213 * string. Usually, if this fails, we barf and quit. On Darwin however,
2214 * we may have a fat archive, which contains archives for more than
2215 * one architecture. Fat archives start with the magic number 0xcafebabe,
2216 * always stored big endian. If we find a fat_header, we scan through
2217 * the fat_arch structs, searching through for one for our host
2218 * architecture. If a matching struct is found, we read the offset
2219 * of our archive data (nfat_offset) and seek forward nfat_offset bytes
2220 * from the start of the file.
2221 *
2222 * A subtlety is that all of the members of the fat_header and fat_arch
2223 * structs are stored big endian, so we need to call byte order
2224 * conversion functions.
2225 *
2226 * If we find the appropriate architecture in a fat archive, we gobble
2227 * its magic "!<arch>\n" string and continue processing just as if
2228 * we had a single architecture archive.
2229 */
2230
2231 n = fread ( tmp, 1, 8, f );
2232 if (n != 8)
2233 barf("loadArchive: Failed reading header from `%s'", path);
2234 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2235
2236 #if defined(darwin_HOST_OS)
2237 /* Not a standard archive, look for a fat archive magic number: */
2238 if (ntohl(*(uint32_t *)tmp) == FAT_MAGIC) {
2239 nfat_arch = ntohl(*(uint32_t *)(tmp + 4));
2240 IF_DEBUG(linker, debugBelch("loadArchive: found a fat archive containing %d architectures\n", nfat_arch));
2241 nfat_offset = 0;
2242
2243 for (i = 0; i < (int)nfat_arch; i++) {
2244 /* search for the right arch */
2245 n = fread( tmp, 1, 20, f );
2246 if (n != 8)
2247 barf("loadArchive: Failed reading arch from `%s'", path);
2248 cputype = ntohl(*(uint32_t *)tmp);
2249 cpusubtype = ntohl(*(uint32_t *)(tmp + 4));
2250
2251 if (cputype == mycputype && cpusubtype == mycpusubtype) {
2252 IF_DEBUG(linker, debugBelch("loadArchive: found my archive in a fat archive\n"));
2253 nfat_offset = ntohl(*(uint32_t *)(tmp + 8));
2254 break;
2255 }
2256 }
2257
2258 if (nfat_offset == 0) {
2259 barf ("loadArchive: searched %d architectures, but no host arch found", (int)nfat_arch);
2260 }
2261 else {
2262 n = fseek( f, nfat_offset, SEEK_SET );
2263 if (n != 0)
2264 barf("loadArchive: Failed to seek to arch in `%s'", path);
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 barf("loadArchive: couldn't find archive in `%s' at offset %d", path, nfat_offset);
2270 }
2271 }
2272 }
2273 else {
2274 barf("loadArchive: Neither an archive, nor a fat archive: `%s'", path);
2275 }
2276
2277 #else
2278 barf("loadArchive: Not an archive: `%s'", path);
2279 #endif
2280 }
2281
2282 IF_DEBUG(linker, debugBelch("loadArchive: loading archive contents\n"));
2283
2284 while(1) {
2285 n = fread ( fileName, 1, 16, f );
2286 if (n != 16) {
2287 if (feof(f)) {
2288 IF_DEBUG(linker, debugBelch("loadArchive: EOF while reading from '%" PATH_FMT "'\n", path));
2289 break;
2290 }
2291 else {
2292 barf("loadArchive: Failed reading file name from `%s'", path);
2293 }
2294 }
2295
2296 #if defined(darwin_HOST_OS)
2297 if (strncmp(fileName, "!<arch>\n", 8) == 0) {
2298 IF_DEBUG(linker, debugBelch("loadArchive: found the start of another archive, breaking\n"));
2299 break;
2300 }
2301 #endif
2302
2303 n = fread ( tmp, 1, 12, f );
2304 if (n != 12)
2305 barf("loadArchive: Failed reading mod time from `%s'", path);
2306 n = fread ( tmp, 1, 6, f );
2307 if (n != 6)
2308 barf("loadArchive: Failed reading owner from `%s'", path);
2309 n = fread ( tmp, 1, 6, f );
2310 if (n != 6)
2311 barf("loadArchive: Failed reading group from `%s'", path);
2312 n = fread ( tmp, 1, 8, f );
2313 if (n != 8)
2314 barf("loadArchive: Failed reading mode from `%s'", path);
2315 n = fread ( tmp, 1, 10, f );
2316 if (n != 10)
2317 barf("loadArchive: Failed reading size from `%s'", path);
2318 tmp[10] = '\0';
2319 for (n = 0; isdigit(tmp[n]); n++);
2320 tmp[n] = '\0';
2321 memberSize = atoi(tmp);
2322
2323 IF_DEBUG(linker, debugBelch("loadArchive: size of this archive member is %d\n", memberSize));
2324 n = fread ( tmp, 1, 2, f );
2325 if (n != 2)
2326 barf("loadArchive: Failed reading magic from `%s'", path);
2327 if (strncmp(tmp, "\x60\x0A", 2) != 0)
2328 barf("loadArchive: Failed reading magic from `%s' at %ld. Got %c%c",
2329 path, ftell(f), tmp[0], tmp[1]);
2330
2331 isGnuIndex = 0;
2332 /* Check for BSD-variant large filenames */
2333 if (0 == strncmp(fileName, "#1/", 3)) {
2334 fileName[16] = '\0';
2335 if (isdigit(fileName[3])) {
2336 for (n = 4; isdigit(fileName[n]); n++);
2337 fileName[n] = '\0';
2338 thisFileNameSize = atoi(fileName + 3);
2339 memberSize -= thisFileNameSize;
2340 if (thisFileNameSize >= fileNameSize) {
2341 /* Double it to avoid potentially continually
2342 increasing it by 1 */
2343 fileNameSize = thisFileNameSize * 2;
2344 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2345 }
2346 n = fread ( fileName, 1, thisFileNameSize, f );
2347 if (n != (int)thisFileNameSize) {
2348 barf("loadArchive: Failed reading filename from `%s'",
2349 path);
2350 }
2351 fileName[thisFileNameSize] = 0;
2352
2353 /* On OS X at least, thisFileNameSize is the size of the
2354 fileName field, not the length of the fileName
2355 itself. */
2356 thisFileNameSize = strlen(fileName);
2357 }
2358 else {
2359 barf("loadArchive: BSD-variant filename size not found while reading filename from `%s'", path);
2360 }
2361 }
2362 /* Check for GNU file index file */
2363 else if (0 == strncmp(fileName, "//", 2)) {
2364 fileName[0] = '\0';
2365 thisFileNameSize = 0;
2366 isGnuIndex = 1;
2367 }
2368 /* Check for a file in the GNU file index */
2369 else if (fileName[0] == '/') {
2370 if (isdigit(fileName[1])) {
2371 int i;
2372
2373 for (n = 2; isdigit(fileName[n]); n++);
2374 fileName[n] = '\0';
2375 n = atoi(fileName + 1);
2376
2377 if (gnuFileIndex == NULL) {
2378 barf("loadArchive: GNU-variant filename without an index while reading from `%s'", path);
2379 }
2380 if (n < 0 || n > gnuFileIndexSize) {
2381 barf("loadArchive: GNU-variant filename offset %d out of range [0..%d] while reading filename from `%s'", n, gnuFileIndexSize, path);
2382 }
2383 if (n != 0 && gnuFileIndex[n - 1] != '\n') {
2384 barf("loadArchive: GNU-variant filename offset %d invalid (range [0..%d]) while reading filename from `%s'", n, gnuFileIndexSize, path);
2385 }
2386 for (i = n; gnuFileIndex[i] != '/'; i++);
2387 thisFileNameSize = i - n;
2388 if (thisFileNameSize >= fileNameSize) {
2389 /* Double it to avoid potentially continually
2390 increasing it by 1 */
2391 fileNameSize = thisFileNameSize * 2;
2392 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2393 }
2394 memcpy(fileName, gnuFileIndex + n, thisFileNameSize);
2395 fileName[thisFileNameSize] = '\0';
2396 }
2397 else if (fileName[1] == ' ') {
2398 fileName[0] = '\0';
2399 thisFileNameSize = 0;
2400 }
2401 else {
2402 barf("loadArchive: GNU-variant filename offset not found while reading filename from `%s'", path);
2403 }
2404 }
2405 /* Finally, the case where the filename field actually contains
2406 the filename */
2407 else {
2408 /* GNU ar terminates filenames with a '/', this allowing
2409 spaces in filenames. So first look to see if there is a
2410 terminating '/'. */
2411 for (thisFileNameSize = 0;
2412 thisFileNameSize < 16;
2413 thisFileNameSize++) {
2414 if (fileName[thisFileNameSize] == '/') {
2415 fileName[thisFileNameSize] = '\0';
2416 break;
2417 }
2418 }
2419 /* If we didn't find a '/', then a space teminates the
2420 filename. Note that if we don't find one, then
2421 thisFileNameSize ends up as 16, and we already have the
2422 '\0' at the end. */
2423 if (thisFileNameSize == 16) {
2424 for (thisFileNameSize = 0;
2425 thisFileNameSize < 16;
2426 thisFileNameSize++) {
2427 if (fileName[thisFileNameSize] == ' ') {
2428 fileName[thisFileNameSize] = '\0';
2429 break;
2430 }
2431 }
2432 }
2433 }
2434
2435 IF_DEBUG(linker,
2436 debugBelch("loadArchive: Found member file `%s'\n", fileName));
2437
2438 isObject = thisFileNameSize >= 2
2439 && fileName[thisFileNameSize - 2] == '.'
2440 && fileName[thisFileNameSize - 1] == 'o';
2441
2442 IF_DEBUG(linker, debugBelch("loadArchive: \tthisFileNameSize = %d\n", (int)thisFileNameSize));
2443 IF_DEBUG(linker, debugBelch("loadArchive: \tisObject = %d\n", isObject));
2444
2445 if (isObject) {
2446 char *archiveMemberName;
2447
2448 IF_DEBUG(linker, debugBelch("loadArchive: Member is an object file...loading...\n"));
2449
2450 /* We can't mmap from the archive directly, as object
2451 files need to be 8-byte aligned but files in .ar
2452 archives are 2-byte aligned. When possible we use mmap
2453 to get some anonymous memory, as on 64-bit platforms if
2454 we use malloc then we can be given memory above 2^32.
2455 In the mmap case we're probably wasting lots of space;
2456 we could do better. */
2457 #if defined(USE_MMAP)
2458 image = mmapForLinker(memberSize, MAP_ANONYMOUS, -1);
2459 #elif defined(mingw32_HOST_OS)
2460 // TODO: We would like to use allocateExec here, but allocateExec
2461 // cannot currently allocate blocks large enough.
2462 {
2463 int offset;
2464 #if defined(x86_64_HOST_ARCH)
2465 /* We get back 8-byte aligned memory (is that guaranteed?), but
2466 the offsets to the sections within the file are all 4 mod 8
2467 (is that guaranteed?). We therefore need to offset the image
2468 by 4, so that all the pointers are 8-byte aligned, so that
2469 pointer tagging works. */
2470 offset = 4;
2471 #else
2472 offset = 0;
2473 #endif
2474 image = VirtualAlloc(NULL, memberSize + offset,
2475 MEM_RESERVE | MEM_COMMIT,
2476 PAGE_EXECUTE_READWRITE);
2477 image += offset;
2478 }
2479 #elif defined(darwin_HOST_OS)
2480 /* See loadObj() */
2481 misalignment = machoGetMisalignment(f);
2482 image = stgMallocBytes(memberSize + misalignment, "loadArchive(image)");
2483 image += misalignment;
2484 #else
2485 image = stgMallocBytes(memberSize, "loadArchive(image)");
2486 #endif
2487 n = fread ( image, 1, memberSize, f );
2488 if (n != memberSize) {
2489 barf("loadArchive: error whilst reading `%s'", path);
2490 }
2491
2492 archiveMemberName = stgMallocBytes(pathlen(path) + thisFileNameSize + 3,
2493 "loadArchive(file)");
2494 sprintf(archiveMemberName, "%" PATH_FMT "(%.*s)",
2495 path, (int)thisFileNameSize, fileName);
2496
2497 oc = mkOc(path, image, memberSize, archiveMemberName
2498 #ifndef USE_MMAP
2499 #ifdef darwin_HOST_OS
2500 , misalignment
2501 #endif
2502 #endif
2503 );
2504
2505 stgFree(archiveMemberName);
2506
2507 if (0 == loadOc(oc)) {
2508 stgFree(fileName);
2509 return 0;
2510 }
2511 }
2512 else if (isGnuIndex) {
2513 if (gnuFileIndex != NULL) {
2514 barf("loadArchive: GNU-variant index found, but already have an index, while reading filename from `%s'", path);
2515 }
2516 IF_DEBUG(linker, debugBelch("loadArchive: Found GNU-variant file index\n"));
2517 #ifdef USE_MMAP
2518 gnuFileIndex = mmapForLinker(memberSize + 1, MAP_ANONYMOUS, -1);
2519 #else
2520 gnuFileIndex = stgMallocBytes(memberSize + 1, "loadArchive(image)");
2521 #endif
2522 n = fread ( gnuFileIndex, 1, memberSize, f );
2523 if (n != memberSize) {
2524 barf("loadArchive: error whilst reading `%s'", path);
2525 }
2526 gnuFileIndex[memberSize] = '/';
2527 gnuFileIndexSize = memberSize;
2528 }
2529 else {
2530 IF_DEBUG(linker, debugBelch("loadArchive: '%s' does not appear to be an object file\n", fileName));
2531 n = fseek(f, memberSize, SEEK_CUR);
2532 if (n != 0)
2533 barf("loadArchive: error whilst seeking by %d in `%s'",
2534 memberSize, path);
2535 }
2536
2537 /* .ar files are 2-byte aligned */
2538 if (memberSize % 2) {
2539 IF_DEBUG(linker, debugBelch("loadArchive: trying to read one pad byte\n"));
2540 n = fread ( tmp, 1, 1, f );
2541 if (n != 1) {
2542 if (feof(f)) {
2543 IF_DEBUG(linker, debugBelch("loadArchive: found EOF while reading one pad byte\n"));
2544 break;
2545 }
2546 else {
2547 barf("loadArchive: Failed reading padding from `%s'", path);
2548 }
2549 }
2550 IF_DEBUG(linker, debugBelch("loadArchive: successfully read one pad byte\n"));
2551 }
2552 IF_DEBUG(linker, debugBelch("loadArchive: reached end of archive loading while loop\n"));
2553 }
2554
2555 fclose(f);
2556
2557 stgFree(fileName);
2558 if (gnuFileIndex != NULL) {
2559 #ifdef USE_MMAP
2560 munmap(gnuFileIndex, gnuFileIndexSize + 1);
2561 #else
2562 stgFree(gnuFileIndex);
2563 #endif
2564 }
2565
2566 IF_DEBUG(linker, debugBelch("loadArchive: done\n"));
2567 return 1;
2568 }
2569
2570 /* -----------------------------------------------------------------------------
2571 * Load an obj (populate the global symbol table, but don't resolve yet)
2572 *
2573 * Returns: 1 if ok, 0 on error.
2574 */
2575 HsInt
2576 loadObj( pathchar *path )
2577 {
2578 ObjectCode* oc;
2579 char *image;
2580 int fileSize;
2581 struct_stat st;
2582 int r;
2583 #ifdef USE_MMAP
2584 int fd;
2585 #else
2586 FILE *f;
2587 # if defined(darwin_HOST_OS)
2588 int misalignment;
2589 # endif
2590 #endif
2591 IF_DEBUG(linker, debugBelch("loadObj %" PATH_FMT "\n", path));
2592
2593 initLinker();
2594
2595 /* debugBelch("loadObj %s\n", path ); */
2596
2597 /* Check that we haven't already loaded this object.
2598 Ignore requests to load multiple times */
2599 {
2600 ObjectCode *o;
2601 int is_dup = 0;
2602 for (o = objects; o; o = o->next) {
2603 if (0 == pathcmp(o->fileName, path)) {
2604 is_dup = 1;
2605 break; /* don't need to search further */
2606 }
2607 }
2608 if (is_dup) {
2609 IF_DEBUG(linker, debugBelch(
2610 "GHCi runtime linker: warning: looks like you're trying to load the\n"
2611 "same object file twice:\n"
2612 " %" PATH_FMT "\n"
2613 "GHCi will ignore this, but be warned.\n"
2614 , path));
2615 return 1; /* success */
2616 }
2617 }
2618
2619 r = pathstat(path, &st);
2620 if (r == -1) {
2621 IF_DEBUG(linker, debugBelch("File doesn't exist\n"));
2622 return 0;
2623 }
2624
2625 fileSize = st.st_size;
2626
2627 #ifdef USE_MMAP
2628 /* On many architectures malloc'd memory isn't executable, so we need to use mmap. */
2629
2630 #if defined(openbsd_HOST_OS)
2631 fd = open(path, O_RDONLY, S_IRUSR);
2632 #else
2633 fd = open(path, O_RDONLY);
2634 #endif
2635 if (fd == -1)
2636 barf("loadObj: can't open `%s'", path);
2637
2638 image = mmapForLinker(fileSize, 0, fd);
2639
2640 close(fd);
2641
2642 #else /* !USE_MMAP */
2643 /* load the image into memory */
2644 f = pathopen(path, WSTR("rb"));
2645 if (!f)
2646 barf("loadObj: can't read `%" PATH_FMT "'", path);
2647
2648 # if defined(mingw32_HOST_OS)
2649 // TODO: We would like to use allocateExec here, but allocateExec
2650 // cannot currently allocate blocks large enough.
2651 {
2652 int offset;
2653 #if defined(x86_64_HOST_ARCH)
2654 /* We get back 8-byte aligned memory (is that guaranteed?), but
2655 the offsets to the sections within the file are all 4 mod 8
2656 (is that guaranteed?). We therefore need to offset the image
2657 by 4, so that all the pointers are 8-byte aligned, so that
2658 pointer tagging works. */
2659 offset = 4;
2660 #else
2661 offset = 0;
2662 #endif
2663 image = VirtualAlloc(NULL, fileSize + offset, MEM_RESERVE | MEM_COMMIT,
2664 PAGE_EXECUTE_READWRITE);
2665 image += offset;
2666 }
2667 # elif defined(darwin_HOST_OS)
2668 // In a Mach-O .o file, all sections can and will be misaligned
2669 // if the total size of the headers is not a multiple of the
2670 // desired alignment. This is fine for .o files that only serve
2671 // as input for the static linker, but it's not fine for us,
2672 // as SSE (used by gcc for floating point) and Altivec require
2673 // 16-byte alignment.
2674 // We calculate the correct alignment from the header before
2675 // reading the file, and then we misalign image on purpose so
2676 // that the actual sections end up aligned again.
2677 misalignment = machoGetMisalignment(f);
2678 image = stgMallocBytes(fileSize + misalignment, "loadObj(image)");
2679 image += misalignment;
2680 # else
2681 image = stgMallocBytes(fileSize, "loadObj(image)");
2682 # endif
2683
2684 {
2685 int n;
2686 n = fread ( image, 1, fileSize, f );
2687 if (n != fileSize)
2688 barf("loadObj: error whilst reading `%s'", path);
2689 }
2690 fclose(f);
2691 #endif /* USE_MMAP */
2692
2693 oc = mkOc(path, image, fileSize, NULL
2694 #ifndef USE_MMAP
2695 #ifdef darwin_HOST_OS
2696 , misalignment
2697 #endif
2698 #endif
2699 );
2700
2701 return loadOc(oc);
2702 }
2703
2704 static HsInt
2705 loadOc( ObjectCode* oc ) {
2706 int r;
2707
2708 IF_DEBUG(linker, debugBelch("loadOc: start\n"));
2709
2710 # if defined(OBJFORMAT_MACHO) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH))
2711 r = ocAllocateSymbolExtras_MachO ( oc );
2712 if (!r) {
2713 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_MachO failed\n"));
2714 return r;
2715 }
2716 # elif defined(OBJFORMAT_ELF) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH))
2717 r = ocAllocateSymbolExtras_ELF ( oc );
2718 if (!r) {
2719 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_ELF failed\n"));
2720 return r;
2721 }
2722 #endif
2723
2724 /* verify the in-memory image */
2725 # if defined(OBJFORMAT_ELF)
2726 r = ocVerifyImage_ELF ( oc );
2727 # elif defined(OBJFORMAT_PEi386)
2728 r = ocVerifyImage_PEi386 ( oc );
2729 # elif defined(OBJFORMAT_MACHO)
2730 r = ocVerifyImage_MachO ( oc );
2731 # else
2732 barf("loadObj: no verify method");
2733 # endif
2734 if (!r) {
2735 IF_DEBUG(linker, debugBelch("loadOc: ocVerifyImage_* failed\n"));
2736 return r;
2737 }
2738
2739 /* build the symbol list for this image */
2740 # if defined(OBJFORMAT_ELF)
2741 r = ocGetNames_ELF ( oc );
2742 # elif defined(OBJFORMAT_PEi386)
2743 r = ocGetNames_PEi386 ( oc );
2744 # elif defined(OBJFORMAT_MACHO)
2745 r = ocGetNames_MachO ( oc );
2746 # else
2747 barf("loadObj: no getNames method");
2748 # endif
2749 if (!r) {
2750 IF_DEBUG(linker, debugBelch("loadOc: ocGetNames_* failed\n"));
2751 return r;
2752 }
2753
2754 /* loaded, but not resolved yet */
2755 oc->status = OBJECT_LOADED;
2756 IF_DEBUG(linker, debugBelch("loadOc: done.\n"));
2757
2758 return 1;
2759 }
2760
2761 /* -----------------------------------------------------------------------------
2762 * resolve all the currently unlinked objects in memory
2763 *
2764 * Returns: 1 if ok, 0 on error.
2765 */
2766 HsInt
2767 resolveObjs( void )
2768 {
2769 ObjectCode *oc;
2770 int r;
2771
2772 IF_DEBUG(linker, debugBelch("resolveObjs: start\n"));
2773 initLinker();
2774
2775 for (oc = objects; oc; oc = oc->next) {
2776 if (oc->status != OBJECT_RESOLVED) {
2777 # if defined(OBJFORMAT_ELF)
2778 r = ocResolve_ELF ( oc );
2779 # elif defined(OBJFORMAT_PEi386)
2780 r = ocResolve_PEi386 ( oc );
2781 # elif defined(OBJFORMAT_MACHO)
2782 r = ocResolve_MachO ( oc );
2783 # else
2784 barf("resolveObjs: not implemented on this platform");
2785 # endif
2786 if (!r) { return r; }
2787
2788 // run init/init_array/ctors/mod_init_func
2789 #if defined(OBJFORMAT_ELF)
2790 r = ocRunInit_ELF ( oc );
2791 #elif defined(OBJFORMAT_PEi386)
2792 r = ocRunInit_PEi386 ( oc );
2793 #elif defined(OBJFORMAT_MACHO)
2794 r = ocRunInit_MachO ( oc );
2795 #else
2796 barf("resolveObjs: initializers not implemented on this platform");
2797 #endif
2798 if (!r) { return r; }
2799
2800 oc->status = OBJECT_RESOLVED;
2801 }
2802 }
2803 IF_DEBUG(linker, debugBelch("resolveObjs: done\n"));
2804 return 1;
2805 }
2806
2807 /* -----------------------------------------------------------------------------
2808 * delete an object from the pool
2809 */
2810 HsInt
2811 unloadObj( pathchar *path )
2812 {
2813 ObjectCode *oc, *prev, *next;
2814 HsBool unloadedAnyObj = HS_BOOL_FALSE;
2815
2816 ASSERT(symhash != NULL);
2817 ASSERT(objects != NULL);
2818
2819 initLinker();
2820
2821 IF_DEBUG(linker, debugBelch("unloadObj: %" PATH_FMT "\n", path));
2822
2823 prev = NULL;
2824 for (oc = objects; oc; prev = oc, oc = next) {
2825 next = oc->next;
2826
2827 if (!pathcmp(oc->fileName,path)) {
2828
2829 /* Remove all the mappings for the symbols within this
2830 * object..
2831 */
2832 {
2833 int i;
2834 for (i = 0; i < oc->n_symbols; i++) {
2835 if (oc->symbols[i] != NULL) {
2836 removeStrHashTable(symhash, oc->symbols[i], NULL);
2837 }
2838 }
2839 }
2840
2841 if (prev == NULL) {
2842 objects = oc->next;
2843 } else {
2844 prev->next = oc->next;
2845 }
2846 oc->next = unloaded_objects;
2847 unloaded_objects = oc;
2848
2849 // The data itself and a few other bits (oc->fileName,
2850 // oc->archiveMemberName) are kept until freeObjectCode(),
2851 // which is only called when it has been determined that
2852 // it is safe to unload the object.
2853 stgFree(oc->symbols);
2854
2855 {
2856 Section *s, *nexts;
2857
2858 for (s = oc->sections; s != NULL; s = nexts) {
2859 nexts = s->next;
2860 stgFree(s);
2861 }
2862 }
2863
2864 freeProddableBlocks(oc);
2865
2866 oc->status = OBJECT_UNLOADED;
2867
2868 /* This could be a member of an archive so continue
2869 * unloading other members. */
2870 unloadedAnyObj = HS_BOOL_TRUE;
2871 }
2872 }
2873
2874 if (unloadedAnyObj) {
2875 return 1;
2876 }
2877 else {
2878 errorBelch("unloadObj: can't find `%" PATH_FMT "' to unload", path);
2879 return 0;
2880 }
2881 }
2882
2883 /* -----------------------------------------------------------------------------
2884 * Sanity checking. For each ObjectCode, maintain a list of address ranges
2885 * which may be prodded during relocation, and abort if we try and write
2886 * outside any of these.
2887 */
2888 static void
2889 addProddableBlock ( ObjectCode* oc, void* start, int size )
2890 {
2891 ProddableBlock* pb
2892 = stgMallocBytes(sizeof(ProddableBlock), "addProddableBlock");
2893
2894 IF_DEBUG(linker, debugBelch("addProddableBlock: %p %p %d\n", oc, start, size));
2895 ASSERT(size > 0);
2896 pb->start = start;
2897 pb->size = size;
2898 pb->next = oc->proddables;
2899 oc->proddables = pb;
2900 }
2901
2902 static void
2903 checkProddableBlock (ObjectCode *oc, void *addr, size_t size )
2904 {
2905 ProddableBlock* pb;
2906
2907 for (pb = oc->proddables; pb != NULL; pb = pb->next) {
2908 char* s = (char*)(pb->start);
2909 char* e = s + pb->size;
2910 char* a = (char*)addr;
2911 if (a >= s && (a+size) <= e) return;
2912 }
2913 barf("checkProddableBlock: invalid fixup in runtime linker: %p", addr);
2914 }
2915
2916 static void freeProddableBlocks (ObjectCode *oc)
2917 {
2918 ProddableBlock *pb, *next;
2919
2920 for (pb = oc->proddables; pb != NULL; pb = next) {
2921 next = pb->next;
2922 stgFree(pb);
2923 }
2924 oc->proddables = NULL;
2925 }
2926
2927 /* -----------------------------------------------------------------------------
2928 * Section management.
2929 */
2930 static void
2931 addSection ( ObjectCode* oc, SectionKind kind,
2932 void* start, void* end )
2933 {
2934 Section* s = stgMallocBytes(sizeof(Section), "addSection");
2935 s->start = start;
2936 s->end = end;
2937 s->kind = kind;
2938 s->next = oc->sections;
2939 oc->sections = s;
2940
2941 IF_DEBUG(linker, debugBelch("addSection: %p-%p (size %lld), kind %d\n",
2942 start, ((char*)end)-1, ((long long)(size_t)end) - ((long long)(size_t)start) + 1, kind ));
2943 }
2944
2945
2946 /* --------------------------------------------------------------------------
2947 * Symbol Extras.
2948 * This is about allocating a small chunk of memory for every symbol in the
2949 * object file. We make sure that the SymboLExtras are always "in range" of
2950 * limited-range PC-relative instructions on various platforms by allocating
2951 * them right next to the object code itself.
2952 */
2953
2954 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2955 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2956
2957 /*
2958 ocAllocateSymbolExtras
2959
2960 Allocate additional space at the end of the object file image to make room
2961 for jump islands (powerpc, x86_64, arm) and GOT entries (x86_64).
2962
2963 PowerPC relative branch instructions have a 24 bit displacement field.
2964 As PPC code is always 4-byte-aligned, this yields a +-32MB range.
2965 If a particular imported symbol is outside this range, we have to redirect
2966 the jump to a short piece of new code that just loads the 32bit absolute
2967 address and jumps there.
2968 On x86_64, PC-relative jumps and PC-relative accesses to the GOT are limited
2969 to 32 bits (+-2GB).
2970
2971 This function just allocates space for one SymbolExtra for every
2972 undefined symbol in the object file. The code for the jump islands is
2973 filled in by makeSymbolExtra below.
2974 */
2975
2976 static int ocAllocateSymbolExtras( ObjectCode* oc, int count, int first )
2977 {
2978 #ifdef USE_MMAP
2979 int pagesize, n, m;
2980 #endif
2981 int aligned;
2982 #ifndef USE_MMAP
2983 int misalignment = 0;
2984 #ifdef darwin_HOST_OS
2985 misalignment = oc->misalignment;
2986 #endif
2987 #endif
2988
2989 if( count > 0 )
2990 {
2991 // round up to the nearest 4
2992 aligned = (oc->fileSize + 3) & ~3;
2993
2994 #ifdef USE_MMAP
2995 pagesize = getpagesize();
2996 n = ROUND_UP( oc->fileSize, pagesize );
2997 m = ROUND_UP( aligned + sizeof (SymbolExtra) * count, pagesize );
2998
2999 /* we try to use spare space at the end of the last page of the
3000 * image for the jump islands, but if there isn't enough space
3001 * then we have to map some (anonymously, remembering MAP_32BIT).
3002 */
3003 if( m > n ) // we need to allocate more pages
3004 {
3005 if (USE_CONTIGUOUS_MMAP)
3006 {
3007 /* Keep image and symbol_extras contiguous */
3008 void *new = mmapForLinker(n + (sizeof(SymbolExtra) * count),
3009 MAP_ANONYMOUS, -1);
3010 if (new)
3011 {
3012 memcpy(new, oc->image, oc->fileSize);
3013 munmap(oc->image, n);
3014 oc->image = new;
3015 oc->fileSize = n + (sizeof(SymbolExtra) * count);
3016 oc->symbol_extras = (SymbolExtra *) (oc->image + n);
3017 }
3018 else
3019 oc->symbol_extras = NULL;
3020 }
3021 else
3022 {
3023 oc->symbol_extras = mmapForLinker(sizeof(SymbolExtra) * count,
3024 MAP_ANONYMOUS, -1);
3025 }
3026 }
3027 else
3028 {
3029 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3030 }
3031 #else
3032 oc->image -= misalignment;
3033 oc->image = stgReallocBytes( oc->image,
3034 misalignment +
3035 aligned + sizeof (SymbolExtra) * count,
3036 "ocAllocateSymbolExtras" );
3037 oc->image += misalignment;
3038
3039 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
3040 #endif /* USE_MMAP */
3041
3042 memset( oc->symbol_extras, 0, sizeof (SymbolExtra) * count );
3043 }
3044 else
3045 oc->symbol_extras = NULL;
3046
3047 oc->first_symbol_extra = first;
3048 oc->n_symbol_extras = count;
3049
3050 return 1;
3051 }
3052
3053 #endif
3054 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
3055
3056 #if defined(arm_HOST_ARCH)
3057
3058 static void
3059 ocFlushInstructionCache( ObjectCode *oc )
3060 {
3061 // Object code
3062 __clear_cache(oc->image, oc->image + oc->fileSize);
3063 // Jump islands
3064 __clear_cache(oc->symbol_extras, &oc->symbol_extras[oc->n_symbol_extras]);
3065 }
3066
3067 #endif
3068
3069 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3070 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
3071
3072 static SymbolExtra* makeSymbolExtra( ObjectCode* oc,
3073 unsigned long symbolNumber,
3074 unsigned long target )
3075 {
3076 SymbolExtra *extra;
3077
3078 ASSERT( symbolNumber >= oc->first_symbol_extra
3079 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3080
3081 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3082
3083 #ifdef powerpc_HOST_ARCH
3084 // lis r12, hi16(target)
3085 extra->jumpIsland.lis_r12 = 0x3d80;
3086 extra->jumpIsland.hi_addr = target >> 16;
3087
3088 // ori r12, r12, lo16(target)
3089 extra->jumpIsland.ori_r12_r12 = 0x618c;
3090 extra->jumpIsland.lo_addr = target & 0xffff;
3091
3092 // mtctr r12
3093 extra->jumpIsland.mtctr_r12 = 0x7d8903a6;
3094
3095 // bctr
3096 extra->jumpIsland.bctr = 0x4e800420;
3097 #endif
3098 #ifdef x86_64_HOST_ARCH
3099 // jmp *-14(%rip)
3100 static uint8_t jmp[] = { 0xFF, 0x25, 0xF2, 0xFF, 0xFF, 0xFF };
3101 extra->addr = target;
3102 memcpy(extra->jumpIsland, jmp, 6);
3103 #endif
3104
3105 return extra;
3106 }
3107
3108 #endif
3109 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3110
3111 #ifdef arm_HOST_ARCH
3112 static SymbolExtra* makeArmSymbolExtra( ObjectCode* oc,
3113 unsigned long symbolNumber,
3114 unsigned long target,
3115 int fromThumb,
3116 int toThumb )
3117 {
3118 SymbolExtra *extra;
3119
3120 ASSERT( symbolNumber >= oc->first_symbol_extra
3121 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3122
3123 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3124
3125 // Make sure instruction mode bit is set properly
3126 if (toThumb)
3127 target |= 1;
3128 else
3129 target &= ~1;
3130
3131 if (!fromThumb) {
3132 // In ARM encoding:
3133 // movw r12, #0
3134 // movt r12, #0
3135 // bx r12
3136 uint32_t code[] = { 0xe300c000, 0xe340c000, 0xe12fff1c };
3137
3138 // Patch lower half-word into movw
3139 code[0] |= ((target>>12) & 0xf) << 16;
3140 code[0] |= target & 0xfff;
3141 // Patch upper half-word into movt
3142 target >>= 16;
3143 code[1] |= ((target>>12) & 0xf) << 16;
3144 code[1] |= target & 0xfff;
3145
3146 memcpy(extra->jumpIsland, code, 12);
3147
3148 } else {
3149 // In Thumb encoding:
3150 // movw r12, #0
3151 // movt r12, #0
3152 // bx r12
3153 uint16_t code[] = { 0xf240, 0x0c00,
3154 0xf2c0, 0x0c00,
3155 0x4760 };
3156
3157 // Patch lower half-word into movw
3158 code[0] |= (target>>12) & 0xf;
3159 code[0] |= ((target>>11) & 0x1) << 10;
3160 code[1] |= ((target>>8) & 0x7) << 12;
3161 code[1] |= target & 0xff;
3162 // Patch upper half-word into movt
3163 target >>= 16;
3164 code[2] |= (target>>12) & 0xf;
3165 code[2] |= ((target>>11) & 0x1) << 10;
3166 code[3] |= ((target>>8) & 0x7) << 12;
3167 code[3] |= target & 0xff;
3168
3169 memcpy(extra->jumpIsland, code, 10);
3170 }
3171
3172 return extra;
3173 }
3174 #endif // arm_HOST_ARCH
3175
3176 /* --------------------------------------------------------------------------
3177 * PowerPC specifics (instruction cache flushing)
3178 * ------------------------------------------------------------------------*/
3179
3180 #ifdef powerpc_HOST_ARCH
3181 /*
3182 ocFlushInstructionCache
3183
3184 Flush the data & instruction caches.
3185 Because the PPC has split data/instruction caches, we have to
3186 do that whenever we modify code at runtime.
3187 */
3188
3189 static void
3190 ocFlushInstructionCacheFrom(void* begin, size_t length)
3191 {
3192 size_t n = (length + 3) / 4;
3193 unsigned long* p = begin;
3194
3195 while (n--)
3196 {
3197 __asm__ volatile ( "dcbf 0,%0\n\t"
3198 "sync\n\t"
3199 "icbi 0,%0"
3200 :
3201 : "r" (p)
3202 );
3203 p++;
3204 }
3205 __asm__ volatile ( "sync\n\t"
3206 "isync"
3207 );
3208 }
3209
3210 static void
3211 ocFlushInstructionCache( ObjectCode *oc )
3212 {
3213 /* The main object code */
3214 ocFlushInstructionCacheFrom(oc->image
3215 #ifdef darwin_HOST_OS
3216 + oc->misalignment
3217 #endif
3218 , oc->fileSize);
3219
3220 /* Jump Islands */
3221 ocFlushInstructionCacheFrom(oc->symbol_extras, sizeof(SymbolExtra) * oc->n_symbol_extras);
3222 }
3223 #endif /* powerpc_HOST_ARCH */
3224
3225
3226 /* --------------------------------------------------------------------------
3227 * PEi386 specifics (Win32 targets)
3228 * ------------------------------------------------------------------------*/
3229
3230 /* The information for this linker comes from
3231 Microsoft Portable Executable
3232 and Common Object File Format Specification
3233 revision 5.1 January 1998
3234 which SimonM says comes from the MS Developer Network CDs.
3235
3236 It can be found there (on older CDs), but can also be found
3237 online at:
3238
3239 http://www.microsoft.com/hwdev/hardware/PECOFF.asp
3240
3241 (this is Rev 6.0 from February 1999).
3242
3243 Things move, so if that fails, try searching for it via
3244
3245 http://www.google.com/search?q=PE+COFF+specification
3246
3247 The ultimate reference for the PE format is the Winnt.h
3248 header file that comes with the Platform SDKs; as always,
3249 implementations will drift wrt their documentation.
3250
3251 A good background article on the PE format is Matt Pietrek's
3252 March 1994 article in Microsoft System Journal (MSJ)
3253 (Vol.9, No. 3): "Peering Inside the PE: A Tour of the
3254 Win32 Portable Executable File Format." The info in there
3255 has recently been updated in a two part article in
3256 MSDN magazine, issues Feb and March 2002,
3257 "Inside Windows: An In-Depth Look into the Win32 Portable
3258 Executable File Format"
3259
3260 John Levine's book "Linkers and Loaders" contains useful
3261 info on PE too.
3262 */
3263
3264
3265 #if defined(OBJFORMAT_PEi386)
3266
3267
3268
3269 typedef unsigned char UChar;
3270 typedef unsigned short UInt16;
3271 typedef unsigned int UInt32;
3272 typedef int Int32;
3273 typedef unsigned long long int UInt64;
3274
3275
3276 typedef
3277 struct {
3278 UInt16 Machine;
3279 UInt16 NumberOfSections;
3280 UInt32 TimeDateStamp;
3281 UInt32 PointerToSymbolTable;
3282 UInt32 NumberOfSymbols;
3283 UInt16 SizeOfOptionalHeader;
3284 UInt16 Characteristics;
3285 }
3286 COFF_header;
3287
3288 #define sizeof_COFF_header 20
3289
3290
3291 typedef
3292 struct {
3293 UChar Name[8];
3294 UInt32 VirtualSize;
3295 UInt32 VirtualAddress;
3296 UInt32 SizeOfRawData;
3297 UInt32 PointerToRawData;
3298 UInt32 PointerToRelocations;
3299 UInt32 PointerToLinenumbers;
3300 UInt16 NumberOfRelocations;
3301 UInt16 NumberOfLineNumbers;
3302 UInt32 Characteristics;
3303 }
3304 COFF_section;
3305
3306 #define sizeof_COFF_section 40
3307
3308
3309 typedef
3310 struct {
3311 UChar Name[8];
3312 UInt32 Value;
3313 UInt16 SectionNumber;
3314 UInt16 Type;
3315 UChar StorageClass;
3316 UChar NumberOfAuxSymbols;
3317 }
3318 COFF_symbol;
3319
3320 #define sizeof_COFF_symbol 18
3321
3322
3323 typedef
3324 struct {
3325 UInt32 VirtualAddress;
3326 UInt32 SymbolTableIndex;
3327 UInt16 Type;
3328 }
3329 COFF_reloc;
3330
3331 #define sizeof_COFF_reloc 10
3332
3333
3334 /* From PE spec doc, section 3.3.2 */
3335 /* Note use of MYIMAGE_* since IMAGE_* are already defined in
3336 windows.h -- for the same purpose, but I want to know what I'm
3337 getting, here. */
3338 #define MYIMAGE_FILE_RELOCS_STRIPPED 0x0001
3339 #define MYIMAGE_FILE_EXECUTABLE_IMAGE 0x0002
3340 #define MYIMAGE_FILE_DLL 0x2000
3341 #define MYIMAGE_FILE_SYSTEM 0x1000
3342 #define MYIMAGE_FILE_BYTES_REVERSED_HI 0x8000
3343 #define MYIMAGE_FILE_BYTES_REVERSED_LO 0x0080
3344 #define MYIMAGE_FILE_32BIT_MACHINE 0x0100
3345
3346 /* From PE spec doc, section 5.4.2 and 5.4.4 */
3347 #define MYIMAGE_SYM_CLASS_EXTERNAL 2
3348 #define MYIMAGE_SYM_CLASS_STATIC 3
3349 #define MYIMAGE_SYM_UNDEFINED 0
3350
3351 /* From PE spec doc, section 4.1 */
3352 #define MYIMAGE_SCN_CNT_CODE 0x00000020
3353 #define MYIMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
3354 #define MYIMAGE_SCN_LNK_NRELOC_OVFL 0x01000000
3355
3356 /* From PE spec doc, section 5.2.1 */
3357 #define MYIMAGE_REL_I386_DIR32 0x0006
3358 #define MYIMAGE_REL_I386_REL32 0x0014
3359
3360
3361 /* We use myindex to calculate array addresses, rather than
3362 simply doing the normal subscript thing. That's because
3363 some of the above structs have sizes which are not
3364 a whole number of words. GCC rounds their sizes up to a
3365 whole number of words, which means that the address calcs
3366 arising from using normal C indexing or pointer arithmetic
3367 are just plain wrong. Sigh.
3368 */
3369 static UChar *
3370 myindex ( int scale, void* base, int index )
3371 {
3372 return
3373 ((UChar*)base) + scale * index;
3374 }
3375
3376
3377 static void
3378 printName ( UChar* name, UChar* strtab )
3379 {
3380 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3381 UInt32 strtab_offset = * (UInt32*)(name+4);
3382 debugBelch("%s", strtab + strtab_offset );
3383 } else {
3384 int i;
3385 for (i = 0; i < 8; i++) {
3386 if (name[i] == 0) break;
3387 debugBelch("%c", name[i] );
3388 }
3389 }
3390 }
3391
3392
3393 static void
3394 copyName ( UChar* name, UChar* strtab, UChar* dst, int dstSize )
3395 {
3396 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3397 UInt32 strtab_offset = * (UInt32*)(name+4);
3398 strncpy ( (char*)dst, (char*)strtab+strtab_offset, dstSize );
3399 dst[dstSize-1] = 0;
3400 } else {
3401 int i = 0;
3402 while (1) {
3403 if (i >= 8) break;
3404 if (name[i] == 0) break;
3405 dst[i] = name[i];
3406 i++;
3407 }
3408 dst[i] = 0;
3409 }
3410 }
3411
3412
3413 static UChar *
3414 cstring_from_COFF_symbol_name ( UChar* name, UChar* strtab )
3415 {
3416 UChar* newstr;
3417 /* If the string is longer than 8 bytes, look in the
3418 string table for it -- this will be correctly zero terminated.
3419 */
3420 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3421 UInt32 strtab_offset = * (UInt32*)(name+4);
3422 return ((UChar*)strtab) + strtab_offset;
3423 }
3424 /* Otherwise, if shorter than 8 bytes, return the original,
3425 which by defn is correctly terminated.
3426 */
3427 if (name[7]==0) return name;
3428 /* The annoying case: 8 bytes. Copy into a temporary
3429 (XXX which is never freed ...)
3430 */
3431 newstr = stgMallocBytes(9, "cstring_from_COFF_symbol_name");
3432 ASSERT(newstr);
3433 strncpy((char*)newstr,(char*)name,8);
3434 newstr[8] = 0;
3435 return newstr;
3436 }
3437
3438 /* Getting the name of a section is mildly tricky, so we make a
3439 function for it. Sadly, in one case we have to copy the string
3440 (when it is exactly 8 bytes long there's no trailing '\0'), so for
3441 consistency we *always* copy the string; the caller must free it
3442 */
3443 static char *
3444 cstring_from_section_name (UChar* name, UChar* strtab)
3445 {
3446 char *newstr;
3447
3448 if (name[0]=='/') {
3449 int strtab_offset = strtol((char*)name+1,NULL,10);
3450 int len = strlen(((char*)strtab) + strtab_offset);
3451
3452 newstr = stgMallocBytes(len+1, "cstring_from_section_symbol_name");
3453 strcpy((char*)newstr, (char*)((UChar*)strtab) + strtab_offset);
3454 return newstr;
3455 }
3456 else
3457 {
3458 newstr = stgMallocBytes(9, "cstring_from_section_symbol_name");
3459 ASSERT(newstr);
3460 strncpy((char*)newstr,(char*)name,8);
3461 newstr[8] = 0;
3462 return newstr;
3463 }
3464 }
3465
3466 /* Just compares the short names (first 8 chars) */
3467 static COFF_section *
3468 findPEi386SectionCalled ( ObjectCode* oc, UChar* name )
3469 {
3470 int i;
3471 COFF_header* hdr
3472 = (COFF_header*)(oc->image);
3473 COFF_section* sectab
3474 = (COFF_section*) (
3475 ((UChar*)(oc->image))
3476 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3477 );
3478 for (i = 0; i < hdr->NumberOfSections; i++) {
3479 UChar* n1;
3480 UChar* n2;
3481 COFF_section* section_i
3482 = (COFF_section*)
3483 myindex ( sizeof_COFF_section, sectab, i );
3484 n1 = (UChar*) &(section_i->Name);
3485 n2 = name;
3486 if (n1[0]==n2[0] && n1[1]==n2[1] && n1[2]==n2[2] &&
3487 n1[3]==n2[3] && n1[4]==n2[4] && n1[5]==n2[5] &&
3488 n1[6]==n2[6] && n1[7]==n2[7])
3489 return section_i;
3490 }
3491
3492 return NULL;
3493 }
3494
3495 static void
3496 zapTrailingAtSign ( UChar* sym )
3497 {
3498 # define my_isdigit(c) ((c) >= '0' && (c) <= '9')
3499 int i, j;
3500 if (sym[0] == 0) return;
3501 i = 0;
3502 while (sym[i] != 0) i++;
3503 i--;
3504 j = i;
3505 while (j > 0 && my_isdigit(sym[j])) j--;
3506 if (j > 0 && sym[j] == '@' && j != i) sym[j] = 0;
3507 # undef my_isdigit
3508 }
3509
3510 static void *
3511 lookupSymbolInDLLs ( UChar *lbl )
3512 {
3513 OpenedDLL* o_dll;
3514 void *sym;
3515
3516 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
3517 /* debugBelch("look in %s for %s\n", o_dll->name, lbl); */
3518
3519 if (lbl[0] == '_') {
3520 /* HACK: if the name has an initial underscore, try stripping
3521 it off & look that up first. I've yet to verify whether there's
3522 a Rule that governs whether an initial '_' *should always* be
3523 stripped off when mapping from import lib name to the DLL name.
3524 */
3525 sym = GetProcAddress(o_dll->instance, (char*)(lbl+1));
3526 if (sym != NULL) {
3527 /*debugBelch("found %s in %s\n", lbl+1,o_dll->name);*/
3528 return sym;
3529 }
3530 }
3531 sym = GetProcAddress(o_dll->instance, (char*)lbl);
3532 if (sym != NULL) {
3533 /*debugBelch("found %s in %s\n", lbl,o_dll->name);*/
3534 return sym;
3535 }
3536 }
3537 return NULL;
3538 }
3539
3540
3541 static int
3542 ocVerifyImage_PEi386 ( ObjectCode* oc )
3543 {
3544 int i;
3545 UInt32 j, noRelocs;
3546 COFF_header* hdr;
3547 COFF_section* sectab;
3548 COFF_symbol* symtab;
3549 UChar* strtab;
3550 /* debugBelch("\nLOADING %s\n", oc->fileName); */
3551 hdr = (COFF_header*)(oc->image);
3552 sectab = (COFF_section*) (
3553 ((UChar*)(oc->image))
3554 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3555 );
3556 symtab = (COFF_symbol*) (
3557 ((UChar*)(oc->image))
3558 + hdr->PointerToSymbolTable
3559 );
3560 strtab = ((UChar*)symtab)
3561 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3562
3563 #if defined(i386_HOST_ARCH)
3564 if (hdr->Machine != 0x14c) {
3565 errorBelch("%" PATH_FMT ": Not x86 PEi386", oc->fileName);
3566 return 0;
3567 }
3568 #elif defined(x86_64_HOST_ARCH)
3569 if (hdr->Machine != 0x8664) {
3570 errorBelch("%" PATH_FMT ": Not x86_64 PEi386", oc->fileName);
3571 return 0;
3572 }
3573 #else
3574 errorBelch("PEi386 not supported on this arch");
3575 #endif
3576
3577 if (hdr->SizeOfOptionalHeader != 0) {
3578 errorBelch("%" PATH_FMT ": PEi386 with nonempty optional header", oc->fileName);
3579 return 0;
3580 }
3581 if ( /* (hdr->Characteristics & MYIMAGE_FILE_RELOCS_STRIPPED) || */
3582 (hdr->Characteristics & MYIMAGE_FILE_EXECUTABLE_IMAGE) ||
3583 (hdr->Characteristics & MYIMAGE_FILE_DLL) ||
3584 (hdr->Characteristics & MYIMAGE_FILE_SYSTEM) ) {
3585 errorBelch("%" PATH_FMT ": Not a PEi386 object file", oc->fileName);
3586 return 0;
3587 }
3588 if ( (hdr->Characteristics & MYIMAGE_FILE_BYTES_REVERSED_HI)
3589 /* || !(hdr->Characteristics & MYIMAGE_FILE_32BIT_MACHINE) */ ) {
3590 errorBelch("%" PATH_FMT ": Invalid PEi386 word size or endiannness: %d",
3591 oc->fileName,
3592 (int)(hdr->Characteristics));
3593 return 0;
3594 }
3595 /* If the string table size is way crazy, this might indicate that
3596 there are more than 64k relocations, despite claims to the
3597 contrary. Hence this test. */
3598 /* debugBelch("strtab size %d\n", * (UInt32*)strtab); */
3599 #if 0
3600 if ( (*(UInt32*)strtab) > 600000 ) {
3601 /* Note that 600k has no special significance other than being
3602 big enough to handle the almost-2MB-sized lumps that
3603 constitute HSwin32*.o. */
3604 debugBelch("PEi386 object has suspiciously large string table; > 64k relocs?");
3605 return 0;
3606 }
3607 #endif
3608
3609 /* No further verification after this point; only debug printing. */
3610 i = 0;
3611 IF_DEBUG(linker, i=1);
3612 if (i == 0) return 1;
3613
3614 debugBelch( "sectab offset = %" FMT_Int "\n", ((UChar*)sectab) - ((UChar*)hdr) );
3615 debugBelch( "symtab offset = %" FMT_Int "\n", ((UChar*)symtab) - ((UChar*)hdr) );
3616 debugBelch( "strtab offset = %" FMT_Int "\n", ((UChar*)strtab) - ((UChar*)hdr) );
3617
3618 debugBelch("\n" );
3619 debugBelch( "Machine: 0x%x\n", (UInt32)(hdr->Machine) );
3620 debugBelch( "# sections: %d\n", (UInt32)(hdr->NumberOfSections) );
3621 debugBelch( "time/date: 0x%x\n", (UInt32)(hdr->TimeDateStamp) );
3622 debugBelch( "symtab offset: %d\n", (UInt32)(hdr->PointerToSymbolTable) );
3623 debugBelch( "# symbols: %d\n", (UInt32)(hdr->NumberOfSymbols) );
3624 debugBelch( "sz of opt hdr: %d\n", (UInt32)(hdr->SizeOfOptionalHeader) );
3625 debugBelch( "characteristics: 0x%x\n", (UInt32)(hdr->Characteristics) );
3626
3627 /* Print the section table. */
3628 debugBelch("\n" );
3629 for (i = 0; i < hdr->NumberOfSections; i++) {
3630 COFF_reloc* reltab;
3631 COFF_section* sectab_i
3632 = (COFF_section*)
3633 myindex ( sizeof_COFF_section, sectab, i );
3634 debugBelch(
3635 "\n"
3636 "section %d\n"
3637 " name `",
3638 i
3639 );
3640 printName ( sectab_i->Name, strtab );
3641 debugBelch(
3642 "'\n"
3643 " vsize %d\n"
3644 " vaddr %d\n"
3645 " data sz %d\n"
3646 " data off %d\n"
3647 " num rel %d\n"
3648 " off rel %d\n"
3649 " ptr raw 0x%x\n",
3650 sectab_i->VirtualSize,
3651 sectab_i->VirtualAddress,
3652 sectab_i->SizeOfRawData,
3653 sectab_i->PointerToRawData,
3654 sectab_i->NumberOfRelocations,
3655 sectab_i->PointerToRelocations,
3656 sectab_i->PointerToRawData
3657 );
3658 reltab = (COFF_reloc*) (
3659 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
3660 );
3661
3662 if ( sectab_i->Characteristics & MYIMAGE_SCN_LNK_NRELOC_OVFL ) {
3663 /* If the relocation field (a short) has overflowed, the
3664 * real count can be found in the first reloc entry.
3665 *
3666 * See Section 4.1 (last para) of the PE spec (rev6.0).
3667 */
3668 COFF_reloc* rel = (COFF_reloc*)
3669 myindex ( sizeof_COFF_reloc, reltab, 0 );
3670 noRelocs = rel->VirtualAddress;
3671 j = 1;
3672 } else {
3673 noRelocs = sectab_i->NumberOfRelocations;
3674 j = 0;
3675 }
3676
3677 for (; j < noRelocs; j++) {
3678 COFF_symbol* sym;
3679 COFF_reloc* rel = (COFF_reloc*)
3680 myindex ( sizeof_COFF_reloc, reltab, j );
3681 debugBelch(
3682 " type 0x%-4x vaddr 0x%-8x name `",
3683 (UInt32)rel->Type,
3684 rel->VirtualAddress );
3685 sym = (COFF_symbol*)
3686 myindex ( sizeof_COFF_symbol, symtab, rel->SymbolTableIndex );
3687 /* Hmm..mysterious looking offset - what's it for? SOF */
3688 printName ( sym->Name, strtab -10 );
3689 debugBelch("'\n" );
3690 }
3691
3692 debugBelch("\n" );
3693 }
3694 debugBelch("\n" );
3695 debugBelch("string table has size 0x%x\n", * (UInt32*)strtab );
3696 debugBelch("---START of string table---\n");
3697 for (i = 4; i < *(Int32*)strtab; i++) {
3698 if (strtab[i] == 0)
3699 debugBelch("\n"); else
3700 debugBelch("%c", strtab[i] );
3701 }
3702 debugBelch("--- END of string table---\n");
3703
3704 debugBelch("\n" );
3705 i = 0;
3706 while (1) {
3707 COFF_symbol* symtab_i;
3708 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
3709 symtab_i = (COFF_symbol*)
3710 myindex ( sizeof_COFF_symbol, symtab, i );
3711 debugBelch(
3712 "symbol %d\n"
3713 " name `",
3714 i
3715 );
3716 printName ( symtab_i->Name, strtab );
3717 debugBelch(
3718 "'\n"
3719 " value 0x%x\n"
3720 " 1+sec# %d\n"
3721 " type 0x%x\n"
3722 " sclass 0x%x\n"
3723 " nAux %d\n",
3724 symtab_i->Value,
3725 (Int32)(symtab_i->SectionNumber),
3726 (UInt32)symtab_i->Type,
3727 (UInt32)symtab_i->StorageClass,
3728 (UInt32)symtab_i->NumberOfAuxSymbols
3729 );
3730 i += symtab_i->NumberOfAuxSymbols;
3731 i++;
3732 }
3733
3734 debugBelch("\n" );
3735 return 1;
3736 }
3737
3738
3739 static int
3740 ocGetNames_PEi386 ( ObjectCode* oc )
3741 {
3742 COFF_header* hdr;
3743 COFF_section* sectab;
3744 COFF_symbol* symtab;
3745 UChar* strtab;
3746
3747 UChar* sname;
3748 void* addr;
3749 int i;
3750
3751 hdr = (COFF_header*)(oc->image);
3752 sectab = (COFF_section*) (
3753 ((UChar*)(oc->image))
3754 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3755 );
3756 symtab = (COFF_symbol*) (
3757 ((UChar*)(oc->image))
3758 + hdr->PointerToSymbolTable
3759 );
3760 strtab = ((UChar*)(oc->image))
3761 + hdr->PointerToSymbolTable
3762 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3763
3764 /* Allocate space for any (local, anonymous) .bss sections. */
3765
3766 for (i = 0; i < hdr->NumberOfSections; i++) {
3767 UInt32 bss_sz;
3768 UChar* zspace;
3769 COFF_section* sectab_i
3770 = (COFF_section*)
3771 myindex ( sizeof_COFF_section, sectab, i );
3772
3773 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3774
3775 if (0 != strcmp(secname, ".bss")) {
3776 stgFree(secname);
3777 continue;
3778 }
3779
3780 stgFree(secname);
3781
3782 /* sof 10/05: the PE spec text isn't too clear regarding what
3783 * the SizeOfRawData field is supposed to hold for object
3784 * file sections containing just uninitialized data -- for executables,
3785 * it is supposed to be zero; unclear what it's supposed to be
3786 * for object files. However, VirtualSize is guaranteed to be
3787 * zero for object files, which definitely suggests that SizeOfRawData
3788 * will be non-zero (where else would the size of this .bss section be
3789 * stored?) Looking at the COFF_section info for incoming object files,
3790 * this certainly appears to be the case.
3791 *
3792 * => I suspect we've been incorrectly handling .bss sections in (relocatable)
3793 * object files up until now. This turned out to bite us with ghc-6.4.1's use
3794 * of gcc-3.4.x, which has started to emit initially-zeroed-out local 'static'
3795 * variable decls into the .bss section. (The specific function in Q which
3796 * triggered this is libraries/base/cbits/dirUtils.c:__hscore_getFolderPath())
3797 */
3798 if (sectab_i->VirtualSize == 0 && sectab_i->SizeOfRawData == 0) continue;
3799 /* This is a non-empty .bss section. Allocate zeroed space for
3800 it, and set its PointerToRawData field such that oc->image +
3801 PointerToRawData == addr_of_zeroed_space. */
3802 bss_sz = sectab_i->VirtualSize;
3803 if ( bss_sz < sectab_i->SizeOfRawData) { bss_sz = sectab_i->SizeOfRawData; }
3804 zspace = stgCallocBytes(1, bss_sz, "ocGetNames_PEi386(anonymous bss)");
3805 sectab_i->PointerToRawData = ((UChar*)zspace) - ((UChar*)(oc->image));
3806 addProddableBlock(oc, zspace, bss_sz);
3807 /* debugBelch("BSS anon section at 0x%x\n", zspace); */
3808 }
3809
3810 /* Copy section information into the ObjectCode. */
3811
3812 for (i = 0; i < hdr->NumberOfSections; i++) {
3813 UChar* start;
3814 UChar* end;
3815 UInt32 sz;
3816
3817 SectionKind kind
3818 = SECTIONKIND_OTHER;
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_DEBUG(linker, debugBelch("section name = %s\n", secname ));
3826
3827 # if 0
3828 /* I'm sure this is the Right Way to do it. However, the
3829 alternative of testing the sectab_i->Name field seems to
3830 work ok with Cygwin.
3831
3832 EZY: We should strongly consider using this style, because
3833 it lets us pick up sections that should be added (e.g.
3834 for a while the linker did not work due to missing .eh_frame
3835 in this section.)
3836 */
3837 if (sectab_i->Characteristics & MYIMAGE_SCN_CNT_CODE ||
3838 sectab_i->Characteristics & MYIMAGE_SCN_CNT_INITIALIZED_DATA)
3839 kind = SECTIONKIND_CODE_OR_RODATA;
3840 # endif
3841
3842 if (0==strcmp(".text",(char*)secname) ||
3843 0==strcmp(".text.startup",(char*)secname) ||
3844 0==strcmp(".rdata",(char*)secname)||
3845 0==strcmp(".eh_frame", (char*)secname)||
3846 0==strcmp(".rodata",(char*)secname))
3847 kind = SECTIONKIND_CODE_OR_RODATA;
3848 if (0==strcmp(".data",(char*)secname) ||
3849 0==strcmp(".bss",(char*)secname))
3850 kind = SECTIONKIND_RWDATA;
3851 if (0==strcmp(".ctors", (char*)secname))
3852 kind = SECTIONKIND_INIT_ARRAY;
3853
3854 ASSERT(sectab_i->SizeOfRawData == 0 || sectab_i->VirtualSize == 0);
3855 sz = sectab_i->SizeOfRawData;
3856 if (sz < sectab_i->VirtualSize) sz = sectab_i->VirtualSize;
3857
3858 start = ((UChar*)(oc->image)) + sectab_i->PointerToRawData;
3859 end = start + sz - 1;
3860
3861 if (kind == SECTIONKIND_OTHER
3862 /* Ignore sections called which contain stabs debugging
3863 information. */
3864 && 0 != strcmp(".stab", (char*)secname)
3865 && 0 != strcmp(".stabstr", (char*)secname)
3866 /* Ignore sections called which contain exception information. */
3867 && 0 != strcmp(".pdata", (char*)secname)
3868 && 0 != strcmp(".xdata", (char*)secname)
3869 /* ignore section generated from .ident */
3870 && 0!= strncmp(".debug", (char*)secname, 6)
3871 /* ignore unknown section that appeared in gcc 3.4.5(?) */
3872 && 0!= strcmp(".reloc", (char*)secname)
3873 && 0 != strcmp(".rdata$zzz", (char*)secname)
3874 /* ignore linker directive sections */
3875 && 0 != strcmp(".drectve", (char*)secname)
3876 ) {
3877 errorBelch("Unknown PEi386 section name `%s' (while processing: %" PATH_FMT")", secname, oc->fileName);
3878 stgFree(secname);
3879 return 0;
3880 }
3881
3882 if (kind != SECTIONKIND_OTHER && end >= start) {
3883 if ((((size_t)(start)) % sizeof(void *)) != 0) {
3884 barf("Misaligned section: %p", start);
3885 }
3886
3887 addSection(oc, kind, start, end);
3888 addProddableBlock(oc, start, end - start + 1);
3889 }
3890
3891 stgFree(secname);
3892 }
3893
3894 /* Copy exported symbols into the ObjectCode. */
3895
3896 oc->n_symbols = hdr->NumberOfSymbols;
3897 oc->symbols = stgMallocBytes(oc->n_symbols * sizeof(char*),
3898 "ocGetNames_PEi386(oc->symbols)");
3899 /* Call me paranoid; I don't care. */
3900 for (i = 0; i < oc->n_symbols; i++)
3901 oc->symbols[i] = NULL;
3902
3903 i = 0;
3904 while (1) {
3905 COFF_symbol* symtab_i;
3906 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
3907 symtab_i = (COFF_symbol*)
3908 myindex ( sizeof_COFF_symbol, symtab, i );
3909
3910 addr = NULL;
3911
3912 if (symtab_i->StorageClass == MYIMAGE_SYM_CLASS_EXTERNAL
3913 && symtab_i->SectionNumber != MYIMAGE_SYM_UNDEFINED) {
3914 /* This symbol is global and defined, viz, exported */
3915 /* for MYIMAGE_SYMCLASS_EXTERNAL
3916 && !MYIMAGE_SYM_UNDEFINED,
3917 the address of the symbol is:
3918 address of relevant section + offset in section
3919 */
3920 COFF_section* sectabent
3921 = (COFF_section*) myindex ( sizeof_COFF_section,
3922 sectab,
3923 symtab_i->SectionNumber-1 );
3924 addr = ((UChar*)(oc->image))
3925 + (sectabent->PointerToRawData
3926 + symtab_i->Value);
3927 }
3928 else
3929 if (symtab_i->SectionNumber == MYIMAGE_SYM_UNDEFINED
3930 && symtab_i->Value > 0) {
3931 /* This symbol isn't in any section at all, ie, global bss.
3932 Allocate zeroed space for it. */
3933 addr = stgCallocBytes(1, symtab_i->Value,
3934 "ocGetNames_PEi386(non-anonymous bss)");
3935 addSection(oc, SECTIONKIND_RWDATA, addr,
3936 ((UChar*)addr) + symtab_i->Value - 1);
3937 addProddableBlock(oc, addr, symtab_i->Value);
3938 /* debugBelch("BSS section at 0x%x\n", addr); */
3939 }
3940
3941 if (addr != NULL ) {
3942 sname = cstring_from_COFF_symbol_name ( symtab_i->Name, strtab );
3943 /* debugBelch("addSymbol %p `%s \n", addr,sname); */
3944 IF_DEBUG(linker, debugBelch("addSymbol %p `%s'\n", addr,sname);)
3945 ASSERT(i >= 0 && i < oc->n_symbols);
3946 /* cstring_from_COFF_symbol_name always succeeds. */
3947 oc->symbols[i] = (char*)sname;
3948 ghciInsertStrHashTable(oc->fileName, symhash, (char*)sname, addr);
3949 } else {
3950 # if 0
3951 debugBelch(
3952 "IGNORING symbol %d\n"
3953 " name `",
3954 i
3955 );
3956 printName ( symtab_i->Name, strtab );
3957 debugBelch(
3958 "'\n"
3959 " value 0x%x\n"
3960 " 1+sec# %d\n"
3961 " type 0x%x\n"
3962 " sclass 0x%x\n"
3963 " nAux %d\n",
3964 symtab_i->Value,
3965 (Int32)(symtab_i->SectionNumber),
3966 (UInt32)symtab_i->Type,
3967 (UInt32)symtab_i->StorageClass,
3968 (UInt32)symtab_i->NumberOfAuxSymbols
3969 );
3970 # endif
3971 }
3972
3973 i += symtab_i->NumberOfAuxSymbols;
3974 i++;
3975 }
3976
3977 return 1;
3978 }
3979
3980
3981 static int
3982 ocResolve_PEi386 ( ObjectCode* oc )
3983 {
3984 COFF_header* hdr;
3985 COFF_section* sectab;
3986 COFF_symbol* symtab;
3987 UChar* strtab;
3988
3989 UInt32 A;
3990 size_t S;
3991 void * pP;
3992
3993 int i;
3994 UInt32 j, noRelocs;
3995
3996 /* ToDo: should be variable-sized? But is at least safe in the
3997 sense of buffer-overrun-proof. */
3998 UChar symbol[1000];
3999 /* debugBelch("resolving for %s\n", oc->fileName); */
4000
4001 hdr = (COFF_header*)(oc->image);
4002 sectab = (COFF_section*) (
4003 ((UChar*)(oc->image))
4004 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
4005 );
4006 symtab = (COFF_symbol*) (
4007 ((UChar*)(oc->image))
4008 + hdr->PointerToSymbolTable
4009 );
4010 strtab = ((UChar*)(oc->image))
4011 + hdr->PointerToSymbolTable
4012 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
4013
4014 for (i = 0; i < hdr->NumberOfSections; i++) {
4015 COFF_section* sectab_i
4016 = (COFF_section*)
4017 myindex ( sizeof_COFF_section, sectab, i );
4018 COFF_reloc* reltab
4019 = (COFF_reloc*) (
4020 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
4021 );