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