Add PrimOp fetchAddIntArray# plus supporting C function atomic_inc_by.
[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
33 #if !defined(mingw32_HOST_OS)
34 #include "posix/Signals.h"
35 #endif
36
37 // get protos for is*()
38 #include <ctype.h>
39
40 #ifdef HAVE_SYS_TYPES_H
41 #include <sys/types.h>
42 #endif
43
44 #include <inttypes.h>
45 #include <stdlib.h>
46 #include <string.h>
47 #include <stdio.h>
48 #include <assert.h>
49
50 #ifdef HAVE_SYS_STAT_H
51 #include <sys/stat.h>
52 #endif
53
54 #if defined(HAVE_DLFCN_H)
55 #include <dlfcn.h>
56 #endif
57
58 #if defined(cygwin32_HOST_OS)
59 #ifdef HAVE_DIRENT_H
60 #include <dirent.h>
61 #endif
62
63 #ifdef HAVE_SYS_TIME_H
64 #include <sys/time.h>
65 #endif
66 #include <regex.h>
67 #include <sys/fcntl.h>
68 #include <sys/termios.h>
69 #include <sys/utime.h>
70 #include <sys/utsname.h>
71 #include <sys/wait.h>
72 #endif
73
74 #if (defined(powerpc_HOST_ARCH) && defined(linux_HOST_OS)) \
75 || (!defined(powerpc_HOST_ARCH) && \
76 ( defined(linux_HOST_OS) || defined(freebsd_HOST_OS) || \
77 defined(dragonfly_HOST_OS) || defined(netbsd_HOST_OS ) || \
78 defined(openbsd_HOST_OS ) || defined(darwin_HOST_OS ) || \
79 defined(kfreebsdgnu_HOST_OS) || defined(gnu_HOST_OS)))
80 /* Don't use mmap on powerpc_HOST_ARCH as mmap doesn't support
81 * reallocating but we need to allocate jump islands just after each
82 * object images. Otherwise relative branches to jump islands can fail
83 * due to 24-bits displacement overflow.
84 */
85 #define USE_MMAP
86 #include <fcntl.h>
87 #include <sys/mman.h>
88
89 #ifdef HAVE_UNISTD_H
90 #include <unistd.h>
91 #endif
92
93 #endif
94
95
96 /* PowerPC has relative branch instructions with only 24 bit displacements
97 * and therefore needs jump islands contiguous with each object code module.
98 */
99 #if (defined(USE_MMAP) && defined(powerpc_HOST_ARCH) && defined(linux_HOST_OS))
100 #define USE_CONTIGUOUS_MMAP 1
101 #else
102 #define USE_CONTIGUOUS_MMAP 0
103 #endif
104
105 #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)
106 # define OBJFORMAT_ELF
107 # include <regex.h> // regex is already used by dlopen() so this is OK
108 // to use here without requiring an additional lib
109 #elif defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
110 # define OBJFORMAT_PEi386
111 # include <windows.h>
112 # include <math.h>
113 #elif defined(darwin_HOST_OS)
114 # define OBJFORMAT_MACHO
115 # include <regex.h>
116 # include <mach/machine.h>
117 # include <mach-o/fat.h>
118 # include <mach-o/loader.h>
119 # include <mach-o/nlist.h>
120 # include <mach-o/reloc.h>
121 #if !defined(HAVE_DLFCN_H)
122 # include <mach-o/dyld.h>
123 #endif
124 #if defined(powerpc_HOST_ARCH)
125 # include <mach-o/ppc/reloc.h>
126 #endif
127 #if defined(x86_64_HOST_ARCH)
128 # include <mach-o/x86_64/reloc.h>
129 #endif
130 #endif
131
132 #if defined(x86_64_HOST_ARCH) && defined(darwin_HOST_OS)
133 #define ALWAYS_PIC
134 #endif
135
136 #if defined(dragonfly_HOST_OS)
137 #include <sys/tls.h>
138 #endif
139
140 // Defining this as 'int' rather than 'const int' means that we don't get
141 // warnings like
142 // error: function might be possible candidate for attribute ‘noreturn’
143 // from gcc:
144 #ifdef DYNAMIC_GHC_PROGRAMS
145 int dynamicGhcPrograms = 1;
146 #else
147 int dynamicGhcPrograms = 0;
148 #endif
149
150 /* Hash table mapping symbol names to Symbol */
151 static /*Str*/HashTable *symhash;
152
153 /* Hash table mapping symbol names to StgStablePtr */
154 static /*Str*/HashTable *stablehash;
155
156 /* List of currently loaded objects */
157 ObjectCode *objects = NULL; /* initially empty */
158
159 static HsInt loadOc( ObjectCode* oc );
160 static ObjectCode* mkOc( pathchar *path, char *image, int imageSize,
161 char *archiveMemberName
162 #ifndef USE_MMAP
163 #ifdef darwin_HOST_OS
164 , int misalignment
165 #endif
166 #endif
167 );
168
169 // Use wchar_t for pathnames on Windows (#5697)
170 #if defined(mingw32_HOST_OS)
171 #define pathcmp wcscmp
172 #define pathlen wcslen
173 #define pathopen _wfopen
174 #define pathstat _wstat
175 #define struct_stat struct _stat
176 #define open wopen
177 #define WSTR(s) L##s
178 #define PATH_FMT "S"
179 #else
180 #define pathcmp strcmp
181 #define pathlen strlen
182 #define pathopen fopen
183 #define pathstat stat
184 #define struct_stat struct stat
185 #define WSTR(s) s
186 #define PATH_FMT "s"
187 #endif
188
189 static pathchar* pathdup(pathchar *path)
190 {
191 pathchar *ret;
192 #if defined(mingw32_HOST_OS)
193 ret = wcsdup(path);
194 #else
195 /* sigh, strdup() isn't a POSIX function, so do it the long way */
196 ret = stgMallocBytes( strlen(path)+1, "loadObj" );
197 strcpy(ret, path);
198 #endif
199 return ret;
200 }
201
202
203 #if defined(OBJFORMAT_ELF)
204 static int ocVerifyImage_ELF ( ObjectCode* oc );
205 static int ocGetNames_ELF ( ObjectCode* oc );
206 static int ocResolve_ELF ( ObjectCode* oc );
207 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
208 static int ocAllocateSymbolExtras_ELF ( ObjectCode* oc );
209 #endif
210 #elif defined(OBJFORMAT_PEi386)
211 static int ocVerifyImage_PEi386 ( ObjectCode* oc );
212 static int ocGetNames_PEi386 ( ObjectCode* oc );
213 static int ocResolve_PEi386 ( ObjectCode* oc );
214 static void *lookupSymbolInDLLs ( unsigned char *lbl );
215 static void zapTrailingAtSign ( unsigned char *sym );
216 #elif defined(OBJFORMAT_MACHO)
217 static int ocVerifyImage_MachO ( ObjectCode* oc );
218 static int ocGetNames_MachO ( ObjectCode* oc );
219 static int ocResolve_MachO ( ObjectCode* oc );
220
221 #ifndef USE_MMAP
222 static int machoGetMisalignment( FILE * );
223 #endif
224 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
225 static int ocAllocateSymbolExtras_MachO ( ObjectCode* oc );
226 #endif
227 #ifdef powerpc_HOST_ARCH
228 static void machoInitSymbolsWithoutUnderscore( void );
229 #endif
230 #endif
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 RTS_USER_SIGNALS_SYMBOLS \
1359 RTS_INTCHAR_SYMBOLS
1360
1361
1362 // 64-bit support functions in libgcc.a
1363 #if defined(__GNUC__) && SIZEOF_VOID_P <= 4 && !defined(_ABIN32)
1364 #define RTS_LIBGCC_SYMBOLS \
1365 SymI_NeedsProto(__divdi3) \
1366 SymI_NeedsProto(__udivdi3) \
1367 SymI_NeedsProto(__moddi3) \
1368 SymI_NeedsProto(__umoddi3) \
1369 SymI_NeedsProto(__muldi3) \
1370 SymI_NeedsProto(__ashldi3) \
1371 SymI_NeedsProto(__ashrdi3) \
1372 SymI_NeedsProto(__lshrdi3) \
1373 SymI_NeedsProto(__fixunsdfdi)
1374 #else
1375 #define RTS_LIBGCC_SYMBOLS
1376 #endif
1377
1378 #if defined(darwin_HOST_OS) && defined(powerpc_HOST_ARCH)
1379 // Symbols that don't have a leading underscore
1380 // on Mac OS X. They have to receive special treatment,
1381 // see machoInitSymbolsWithoutUnderscore()
1382 #define RTS_MACHO_NOUNDERLINE_SYMBOLS \
1383 SymI_NeedsProto(saveFP) \
1384 SymI_NeedsProto(restFP)
1385 #endif
1386
1387 /* entirely bogus claims about types of these symbols */
1388 #define SymI_NeedsProto(vvv) extern void vvv(void);
1389 #if defined(COMPILING_WINDOWS_DLL)
1390 #define SymE_HasProto(vvv) SymE_HasProto(vvv);
1391 # if defined(x86_64_HOST_ARCH)
1392 # define SymE_NeedsProto(vvv) extern void __imp_ ## vvv (void);
1393 # else
1394 # define SymE_NeedsProto(vvv) extern void _imp__ ## vvv (void);
1395 # endif
1396 #else
1397 #define SymE_NeedsProto(vvv) SymI_NeedsProto(vvv);
1398 #define SymE_HasProto(vvv) SymI_HasProto(vvv)
1399 #endif
1400 #define SymI_HasProto(vvv) /**/
1401 #define SymI_HasProto_redirect(vvv,xxx) /**/
1402 RTS_SYMBOLS
1403 RTS_RET_SYMBOLS
1404 RTS_POSIX_ONLY_SYMBOLS
1405 RTS_MINGW_ONLY_SYMBOLS
1406 RTS_CYGWIN_ONLY_SYMBOLS
1407 RTS_DARWIN_ONLY_SYMBOLS
1408 RTS_LIBGCC_SYMBOLS
1409 RTS_LIBFFI_SYMBOLS
1410 #undef SymI_NeedsProto
1411 #undef SymI_HasProto
1412 #undef SymI_HasProto_redirect
1413 #undef SymE_HasProto
1414 #undef SymE_NeedsProto
1415
1416 #ifdef LEADING_UNDERSCORE
1417 #define MAYBE_LEADING_UNDERSCORE_STR(s) ("_" s)
1418 #else
1419 #define MAYBE_LEADING_UNDERSCORE_STR(s) (s)
1420 #endif
1421
1422 #define SymI_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1423 (void*)(&(vvv)) },
1424 #define SymE_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1425 (void*)DLL_IMPORT_DATA_REF(vvv) },
1426
1427 #define SymI_NeedsProto(vvv) SymI_HasProto(vvv)
1428 #define SymE_NeedsProto(vvv) SymE_HasProto(vvv)
1429
1430 // SymI_HasProto_redirect allows us to redirect references to one symbol to
1431 // another symbol. See newCAF/newDynCAF for an example.
1432 #define SymI_HasProto_redirect(vvv,xxx) \
1433 { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1434 (void*)(&(xxx)) },
1435
1436 static RtsSymbolVal rtsSyms[] = {
1437 RTS_SYMBOLS
1438 RTS_RET_SYMBOLS
1439 RTS_POSIX_ONLY_SYMBOLS
1440 RTS_MINGW_ONLY_SYMBOLS
1441 RTS_CYGWIN_ONLY_SYMBOLS
1442 RTS_DARWIN_ONLY_SYMBOLS
1443 RTS_LIBGCC_SYMBOLS
1444 RTS_LIBFFI_SYMBOLS
1445 #if defined(darwin_HOST_OS) && defined(i386_HOST_ARCH)
1446 // dyld stub code contains references to this,
1447 // but it should never be called because we treat
1448 // lazy pointers as nonlazy.
1449 { "dyld_stub_binding_helper", (void*)0xDEADBEEF },
1450 #endif
1451 { 0, 0 } /* sentinel */
1452 };
1453
1454
1455 /* -----------------------------------------------------------------------------
1456 * Insert symbols into hash tables, checking for duplicates.
1457 */
1458
1459 static void ghciInsertStrHashTable ( pathchar* obj_name,
1460 HashTable *table,
1461 char* key,
1462 void *data
1463 )
1464 {
1465 if (lookupHashTable(table, (StgWord)key) == NULL)
1466 {
1467 insertStrHashTable(table, (StgWord)key, data);
1468 return;
1469 }
1470 debugBelch(
1471 "\n\n"
1472 "GHCi runtime linker: fatal error: I found a duplicate definition for symbol\n"
1473 " %s\n"
1474 "whilst processing object file\n"
1475 " %" PATH_FMT "\n"
1476 "This could be caused by:\n"
1477 " * Loading two different object files which export the same symbol\n"
1478 " * Specifying the same object file twice on the GHCi command line\n"
1479 " * An incorrect `package.conf' entry, causing some object to be\n"
1480 " loaded twice.\n"
1481 "GHCi cannot safely continue in this situation. Exiting now. Sorry.\n"
1482 "\n",
1483 (char*)key,
1484 obj_name
1485 );
1486 stg_exit(1);
1487 }
1488 /* -----------------------------------------------------------------------------
1489 * initialize the object linker
1490 */
1491
1492
1493 static int linker_init_done = 0 ;
1494
1495 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1496 static void *dl_prog_handle;
1497 static regex_t re_invalid;
1498 static regex_t re_realso;
1499 #ifdef THREADED_RTS
1500 static Mutex dl_mutex; // mutex to protect dlopen/dlerror critical section
1501 #endif
1502 #endif
1503
1504 void
1505 initLinker( void )
1506 {
1507 RtsSymbolVal *sym;
1508 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1509 int compileResult;
1510 #endif
1511
1512 IF_DEBUG(linker, debugBelch("initLinker: start\n"));
1513
1514 /* Make initLinker idempotent, so we can call it
1515 before every relevant operation; that means we
1516 don't need to initialise the linker separately */
1517 if (linker_init_done == 1) {
1518 IF_DEBUG(linker, debugBelch("initLinker: idempotent return\n"));
1519 return;
1520 } else {
1521 linker_init_done = 1;
1522 }
1523
1524 #if defined(THREADED_RTS) && (defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO))
1525 initMutex(&dl_mutex);
1526 #endif
1527 stablehash = allocStrHashTable();
1528 symhash = allocStrHashTable();
1529
1530 /* populate the symbol table with stuff from the RTS */
1531 for (sym = rtsSyms; sym->lbl != NULL; sym++) {
1532 ghciInsertStrHashTable(WSTR("(GHCi built-in symbols)"),
1533 symhash, sym->lbl, sym->addr);
1534 IF_DEBUG(linker, debugBelch("initLinker: inserting rts symbol %s, %p\n", sym->lbl, sym->addr));
1535 }
1536 # if defined(OBJFORMAT_MACHO) && defined(powerpc_HOST_ARCH)
1537 machoInitSymbolsWithoutUnderscore();
1538 # endif
1539
1540 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1541 # if defined(RTLD_DEFAULT)
1542 dl_prog_handle = RTLD_DEFAULT;
1543 # else
1544 dl_prog_handle = dlopen(NULL, RTLD_LAZY);
1545 # endif /* RTLD_DEFAULT */
1546
1547 compileResult = regcomp(&re_invalid,
1548 "(([^ \t()])+\\.so([^ \t:()])*):([ \t])*(invalid ELF header|file too short)",
1549 REG_EXTENDED);
1550 if (compileResult != 0) {
1551 barf("Compiling re_invalid failed");
1552 }
1553 compileResult = regcomp(&re_realso,
1554 "(GROUP|INPUT) *\\( *([^ )]+)",
1555 REG_EXTENDED);
1556 if (compileResult != 0) {
1557 barf("Compiling re_realso failed");
1558 }
1559 # endif
1560
1561 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1562 if (RtsFlags.MiscFlags.linkerMemBase != 0) {
1563 // User-override for mmap_32bit_base
1564 mmap_32bit_base = (void*)RtsFlags.MiscFlags.linkerMemBase;
1565 }
1566 #endif
1567
1568 #if defined(mingw32_HOST_OS)
1569 /*
1570 * These two libraries cause problems when added to the static link,
1571 * but are necessary for resolving symbols in GHCi, hence we load
1572 * them manually here.
1573 */
1574 addDLL(WSTR("msvcrt"));
1575 addDLL(WSTR("kernel32"));
1576 #endif
1577
1578 IF_DEBUG(linker, debugBelch("initLinker: done\n"));
1579 return;
1580 }
1581
1582 void
1583 exitLinker( void ) {
1584 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1585 if (linker_init_done == 1) {
1586 regfree(&re_invalid);
1587 regfree(&re_realso);
1588 #ifdef THREADED_RTS
1589 closeMutex(&dl_mutex);
1590 #endif
1591 }
1592 #endif
1593 }
1594
1595 /* -----------------------------------------------------------------------------
1596 * Loading DLL or .so dynamic libraries
1597 * -----------------------------------------------------------------------------
1598 *
1599 * Add a DLL from which symbols may be found. In the ELF case, just
1600 * do RTLD_GLOBAL-style add, so no further messing around needs to
1601 * happen in order that symbols in the loaded .so are findable --
1602 * lookupSymbol() will subsequently see them by dlsym on the program's
1603 * dl-handle. Returns NULL if success, otherwise ptr to an err msg.
1604 *
1605 * In the PEi386 case, open the DLLs and put handles to them in a
1606 * linked list. When looking for a symbol, try all handles in the
1607 * list. This means that we need to load even DLLs that are guaranteed
1608 * to be in the ghc.exe image already, just so we can get a handle
1609 * to give to loadSymbol, so that we can find the symbols. For such
1610 * libraries, the LoadLibrary call should be a no-op except for returning
1611 * the handle.
1612 *
1613 */
1614
1615 #if defined(OBJFORMAT_PEi386)
1616 /* A record for storing handles into DLLs. */
1617
1618 typedef
1619 struct _OpenedDLL {
1620 pathchar* name;
1621 struct _OpenedDLL* next;
1622 HINSTANCE instance;
1623 }
1624 OpenedDLL;
1625
1626 /* A list thereof. */
1627 static OpenedDLL* opened_dlls = NULL;
1628 #endif
1629
1630 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1631
1632 /* Suppose in ghci we load a temporary SO for a module containing
1633 f = 1
1634 and then modify the module, recompile, and load another temporary
1635 SO with
1636 f = 2
1637 Then as we don't unload the first SO, dlsym will find the
1638 f = 1
1639 symbol whereas we want the
1640 f = 2
1641 symbol. We therefore need to keep our own SO handle list, and
1642 try SOs in the right order. */
1643
1644 typedef
1645 struct _OpenedSO {
1646 struct _OpenedSO* next;
1647 void *handle;
1648 }
1649 OpenedSO;
1650
1651 /* A list thereof. */
1652 static OpenedSO* openedSOs = NULL;
1653
1654 static const char *
1655 internal_dlopen(const char *dll_name)
1656 {
1657 OpenedSO* o_so;
1658 void *hdl;
1659 const char *errmsg;
1660 char *errmsg_copy;
1661
1662 // omitted: RTLD_NOW
1663 // see http://www.haskell.org/pipermail/cvs-ghc/2007-September/038570.html
1664 IF_DEBUG(linker,
1665 debugBelch("internal_dlopen: dll_name = '%s'\n", dll_name));
1666
1667 //-------------- Begin critical section ------------------
1668 // This critical section is necessary because dlerror() is not
1669 // required to be reentrant (see POSIX -- IEEE Std 1003.1-2008)
1670 // Also, the error message returned must be copied to preserve it
1671 // (see POSIX also)
1672
1673 ACQUIRE_LOCK(&dl_mutex);
1674 hdl = dlopen(dll_name, RTLD_LAZY | RTLD_GLOBAL);
1675
1676 errmsg = NULL;
1677 if (hdl == NULL) {
1678 /* dlopen failed; return a ptr to the error msg. */
1679 errmsg = dlerror();
1680 if (errmsg == NULL) errmsg = "addDLL: unknown error";
1681 errmsg_copy = stgMallocBytes(strlen(errmsg)+1, "addDLL");
1682 strcpy(errmsg_copy, errmsg);
1683 errmsg = errmsg_copy;
1684 }
1685 o_so = stgMallocBytes(sizeof(OpenedSO), "addDLL");
1686 o_so->handle = hdl;
1687 o_so->next = openedSOs;
1688 openedSOs = o_so;
1689
1690 RELEASE_LOCK(&dl_mutex);
1691 //--------------- End critical section -------------------
1692
1693 return errmsg;
1694 }
1695
1696 static void *
1697 internal_dlsym(void *hdl, const char *symbol) {
1698 OpenedSO* o_so;
1699 void *v;
1700
1701 // We acquire dl_mutex as concurrent dl* calls may alter dlerror
1702 ACQUIRE_LOCK(&dl_mutex);
1703 dlerror();
1704 for (o_so = openedSOs; o_so != NULL; o_so = o_so->next) {
1705 v = dlsym(o_so->handle, symbol);
1706 if (dlerror() == NULL) {
1707 RELEASE_LOCK(&dl_mutex);
1708 return v;
1709 }
1710 }
1711 v = dlsym(hdl, symbol)
1712 RELEASE_LOCK(&dl_mutex);
1713 return v;
1714 }
1715 # endif
1716
1717 const char *
1718 addDLL( pathchar *dll_name )
1719 {
1720 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1721 /* ------------------- ELF DLL loader ------------------- */
1722
1723 #define NMATCH 5
1724 regmatch_t match[NMATCH];
1725 const char *errmsg;
1726 FILE* fp;
1727 size_t match_length;
1728 #define MAXLINE 1000
1729 char line[MAXLINE];
1730 int result;
1731
1732 initLinker();
1733
1734 IF_DEBUG(linker, debugBelch("addDLL: dll_name = '%s'\n", dll_name));
1735 errmsg = internal_dlopen(dll_name);
1736
1737 if (errmsg == NULL) {
1738 return NULL;
1739 }
1740
1741 // GHC Trac ticket #2615
1742 // On some systems (e.g., Gentoo Linux) dynamic files (e.g. libc.so)
1743 // contain linker scripts rather than ELF-format object code. This
1744 // code handles the situation by recognizing the real object code
1745 // file name given in the linker script.
1746 //
1747 // If an "invalid ELF header" error occurs, it is assumed that the
1748 // .so file contains a linker script instead of ELF object code.
1749 // In this case, the code looks for the GROUP ( ... ) linker
1750 // directive. If one is found, the first file name inside the
1751 // parentheses is treated as the name of a dynamic library and the
1752 // code attempts to dlopen that file. If this is also unsuccessful,
1753 // an error message is returned.
1754
1755 // see if the error message is due to an invalid ELF header
1756 IF_DEBUG(linker, debugBelch("errmsg = '%s'\n", errmsg));
1757 result = regexec(&re_invalid, errmsg, (size_t) NMATCH, match, 0);
1758 IF_DEBUG(linker, debugBelch("result = %i\n", result));
1759 if (result == 0) {
1760 // success -- try to read the named file as a linker script
1761 match_length = (size_t) stg_min((match[1].rm_eo - match[1].rm_so),
1762 MAXLINE-1);
1763 strncpy(line, (errmsg+(match[1].rm_so)),match_length);
1764 line[match_length] = '\0'; // make sure string is null-terminated
1765 IF_DEBUG(linker, debugBelch ("file name = '%s'\n", line));
1766 if ((fp = fopen(line, "r")) == NULL) {
1767 return errmsg; // return original error if open fails
1768 }
1769 // try to find a GROUP or INPUT ( ... ) command
1770 while (fgets(line, MAXLINE, fp) != NULL) {
1771 IF_DEBUG(linker, debugBelch("input line = %s", line));
1772 if (regexec(&re_realso, line, (size_t) NMATCH, match, 0) == 0) {
1773 // success -- try to dlopen the first named file
1774 IF_DEBUG(linker, debugBelch("match%s\n",""));
1775 line[match[2].rm_eo] = '\0';
1776 errmsg = internal_dlopen(line+match[2].rm_so);
1777 break;
1778 }
1779 // if control reaches here, no GROUP or INPUT ( ... ) directive
1780 // was found and the original error message is returned to the
1781 // caller
1782 }
1783 fclose(fp);
1784 }
1785 return errmsg;
1786
1787 # elif defined(OBJFORMAT_PEi386)
1788 /* ------------------- Win32 DLL loader ------------------- */
1789
1790 pathchar* buf;
1791 OpenedDLL* o_dll;
1792 HINSTANCE instance;
1793
1794 initLinker();
1795
1796 /* debugBelch("\naddDLL; dll_name = `%s'\n", dll_name); */
1797
1798 /* See if we've already got it, and ignore if so. */
1799 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
1800 if (0 == pathcmp(o_dll->name, dll_name))
1801 return NULL;
1802 }
1803
1804 /* The file name has no suffix (yet) so that we can try
1805 both foo.dll and foo.drv
1806
1807 The documentation for LoadLibrary says:
1808 If no file name extension is specified in the lpFileName
1809 parameter, the default library extension .dll is
1810 appended. However, the file name string can include a trailing
1811 point character (.) to indicate that the module name has no
1812 extension. */
1813
1814 buf = stgMallocBytes((pathlen(dll_name) + 10) * sizeof(wchar_t), "addDLL");
1815 swprintf(buf, L"%s.DLL", dll_name);
1816 instance = LoadLibraryW(buf);
1817 if (instance == NULL) {
1818 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1819 // KAA: allow loading of drivers (like winspool.drv)
1820 swprintf(buf, L"%s.DRV", dll_name);
1821 instance = LoadLibraryW(buf);
1822 if (instance == NULL) {
1823 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1824 // #1883: allow loading of unix-style libfoo.dll DLLs
1825 swprintf(buf, L"lib%s.DLL", dll_name);
1826 instance = LoadLibraryW(buf);
1827 if (instance == NULL) {
1828 goto error;
1829 }
1830 }
1831 }
1832 stgFree(buf);
1833
1834 /* Add this DLL to the list of DLLs in which to search for symbols. */
1835 o_dll = stgMallocBytes( sizeof(OpenedDLL), "addDLL" );
1836 o_dll->name = pathdup(dll_name);
1837 o_dll->instance = instance;
1838 o_dll->next = opened_dlls;
1839 opened_dlls = o_dll;
1840
1841 return NULL;
1842
1843 error:
1844 stgFree(buf);
1845 sysErrorBelch("%" PATH_FMT, dll_name);
1846
1847 /* LoadLibrary failed; return a ptr to the error msg. */
1848 return "addDLL: could not load DLL";
1849
1850 # else
1851 barf("addDLL: not implemented on this platform");
1852 # endif
1853 }
1854
1855 /* -----------------------------------------------------------------------------
1856 * insert a stable symbol in the hash table
1857 */
1858
1859 void
1860 insertStableSymbol(pathchar* obj_name, char* key, StgPtr p)
1861 {
1862 ghciInsertStrHashTable(obj_name, stablehash, key, getStablePtr(p));
1863 }
1864
1865
1866 /* -----------------------------------------------------------------------------
1867 * insert a symbol in the hash table
1868 */
1869 void
1870 insertSymbol(pathchar* obj_name, char* key, void* data)
1871 {
1872 ghciInsertStrHashTable(obj_name, symhash, key, data);
1873 }
1874
1875 /* -----------------------------------------------------------------------------
1876 * lookup a symbol in the hash table
1877 */
1878 void *
1879 lookupSymbol( char *lbl )
1880 {
1881 void *val;
1882 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s\n", lbl));
1883 initLinker() ;
1884 ASSERT(symhash != NULL);
1885 val = lookupStrHashTable(symhash, lbl);
1886
1887 if (val == NULL) {
1888 IF_DEBUG(linker, debugBelch("lookupSymbol: symbol not found\n"));
1889 # if defined(OBJFORMAT_ELF)
1890 return internal_dlsym(dl_prog_handle, lbl);
1891 # elif defined(OBJFORMAT_MACHO)
1892 # if HAVE_DLFCN_H
1893 /* On OS X 10.3 and later, we use dlsym instead of the old legacy
1894 interface.
1895
1896 HACK: On OS X, all symbols are prefixed with an underscore.
1897 However, dlsym wants us to omit the leading underscore from the
1898 symbol name -- the dlsym routine puts it back on before searching
1899 for the symbol. For now, we simply strip it off here (and ONLY
1900 here).
1901 */
1902 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s with dlsym\n", lbl));
1903 ASSERT(lbl[0] == '_');
1904 return internal_dlsym(dl_prog_handle, lbl + 1);
1905 # else
1906 if (NSIsSymbolNameDefined(lbl)) {
1907 NSSymbol symbol = NSLookupAndBindSymbol(lbl);
1908 return NSAddressOfSymbol(symbol);
1909 } else {
1910 return NULL;
1911 }
1912 # endif /* HAVE_DLFCN_H */
1913 # elif defined(OBJFORMAT_PEi386)
1914 void* sym;
1915
1916 sym = lookupSymbolInDLLs((unsigned char*)lbl);
1917 if (sym != NULL) { return sym; };
1918
1919 // Also try looking up the symbol without the @N suffix. Some
1920 // DLLs have the suffixes on their symbols, some don't.
1921 zapTrailingAtSign ( (unsigned char*)lbl );
1922 sym = lookupSymbolInDLLs((unsigned char*)lbl);
1923 if (sym != NULL) { return sym; };
1924 return NULL;
1925
1926 # else
1927 ASSERT(2+2 == 5);
1928 return NULL;
1929 # endif
1930 } else {
1931 IF_DEBUG(linker, debugBelch("lookupSymbol: value of %s is %p\n", lbl, val));
1932 return val;
1933 }
1934 }
1935
1936 /* -----------------------------------------------------------------------------
1937 * Debugging aid: look in GHCi's object symbol tables for symbols
1938 * within DELTA bytes of the specified address, and show their names.
1939 */
1940 #ifdef DEBUG
1941 void ghci_enquire ( char* addr );
1942
1943 void ghci_enquire ( char* addr )
1944 {
1945 int i;
1946 char* sym;
1947 char* a;
1948 const int DELTA = 64;
1949 ObjectCode* oc;
1950
1951 initLinker();
1952
1953 for (oc = objects; oc; oc = oc->next) {
1954 for (i = 0; i < oc->n_symbols; i++) {
1955 sym = oc->symbols[i];
1956 if (sym == NULL) continue;
1957 a = NULL;
1958 if (a == NULL) {
1959 a = lookupStrHashTable(symhash, sym);
1960 }
1961 if (a == NULL) {
1962 // debugBelch("ghci_enquire: can't find %s\n", sym);
1963 }
1964 else if (addr-DELTA <= a && a <= addr+DELTA) {
1965 debugBelch("%p + %3d == `%s'\n", addr, (int)(a - addr), sym);
1966 }
1967 }
1968 }
1969 }
1970 #endif
1971
1972 #ifdef USE_MMAP
1973 #define ROUND_UP(x,size) ((x + size - 1) & ~(size - 1))
1974
1975 static void *
1976 mmapForLinker (size_t bytes, nat flags, int fd)
1977 {
1978 void *map_addr = NULL;
1979 void *result;
1980 int pagesize, size;
1981 static nat fixed = 0;
1982
1983 IF_DEBUG(linker, debugBelch("mmapForLinker: start\n"));
1984 pagesize = getpagesize();
1985 size = ROUND_UP(bytes, pagesize);
1986
1987 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1988 mmap_again:
1989
1990 if (mmap_32bit_base != 0) {
1991 map_addr = mmap_32bit_base;
1992 }
1993 #endif
1994
1995 IF_DEBUG(linker, debugBelch("mmapForLinker: \tprotection %#0x\n", PROT_EXEC | PROT_READ | PROT_WRITE));
1996 IF_DEBUG(linker, debugBelch("mmapForLinker: \tflags %#0x\n", MAP_PRIVATE | TRY_MAP_32BIT | fixed | flags));
1997 result = mmap(map_addr, size, PROT_EXEC|PROT_READ|PROT_WRITE,
1998 MAP_PRIVATE|TRY_MAP_32BIT|fixed|flags, fd, 0);
1999
2000 if (result == MAP_FAILED) {
2001 sysErrorBelch("mmap %" FMT_Word " bytes at %p",(W_)size,map_addr);
2002 errorBelch("Try specifying an address with +RTS -xm<addr> -RTS");
2003 stg_exit(EXIT_FAILURE);
2004 }
2005
2006 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2007 if (mmap_32bit_base != 0) {
2008 if (result == map_addr) {
2009 mmap_32bit_base = (StgWord8*)map_addr + size;
2010 } else {
2011 if ((W_)result > 0x80000000) {
2012 // oops, we were given memory over 2Gb
2013 #if defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS)
2014 // Some platforms require MAP_FIXED. This is normally
2015 // a bad idea, because MAP_FIXED will overwrite
2016 // existing mappings.
2017 munmap(result,size);
2018 fixed = MAP_FIXED;
2019 goto mmap_again;
2020 #else
2021 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);
2022 #endif
2023 } else {
2024 // hmm, we were given memory somewhere else, but it's
2025 // still under 2Gb so we can use it. Next time, ask
2026 // for memory right after the place we just got some
2027 mmap_32bit_base = (StgWord8*)result + size;
2028 }
2029 }
2030 } else {
2031 if ((W_)result > 0x80000000) {
2032 // oops, we were given memory over 2Gb
2033 // ... try allocating memory somewhere else?;
2034 debugTrace(DEBUG_linker,"MAP_32BIT didn't work; gave us %lu bytes at 0x%p", bytes, result);
2035 munmap(result, size);
2036
2037 // Set a base address and try again... (guess: 1Gb)
2038 mmap_32bit_base = (void*)0x40000000;
2039 goto mmap_again;
2040 }
2041 }
2042 #endif
2043
2044 IF_DEBUG(linker, debugBelch("mmapForLinker: mapped %" FMT_Word " bytes starting at %p\n", (W_)size, result));
2045 IF_DEBUG(linker, debugBelch("mmapForLinker: done\n"));
2046 return result;
2047 }
2048 #endif // USE_MMAP
2049
2050 static ObjectCode*
2051 mkOc( pathchar *path, char *image, int imageSize,
2052 char *archiveMemberName
2053 #ifndef USE_MMAP
2054 #ifdef darwin_HOST_OS
2055 , int misalignment
2056 #endif
2057 #endif
2058 ) {
2059 ObjectCode* oc;
2060
2061 IF_DEBUG(linker, debugBelch("mkOc: start\n"));
2062 oc = stgMallocBytes(sizeof(ObjectCode), "loadArchive(oc)");
2063
2064 # if defined(OBJFORMAT_ELF)
2065 oc->formatName = "ELF";
2066 # elif defined(OBJFORMAT_PEi386)
2067 oc->formatName = "PEi386";
2068 # elif defined(OBJFORMAT_MACHO)
2069 oc->formatName = "Mach-O";
2070 # else
2071 stgFree(oc);
2072 barf("loadObj: not implemented on this platform");
2073 # endif
2074
2075 oc->image = image;
2076 oc->fileName = pathdup(path);
2077
2078 if (archiveMemberName) {
2079 oc->archiveMemberName = stgMallocBytes( strlen(archiveMemberName)+1, "loadObj" );
2080 strcpy(oc->archiveMemberName, archiveMemberName);
2081 }
2082 else {
2083 oc->archiveMemberName = NULL;
2084 }
2085
2086 oc->fileSize = imageSize;
2087 oc->symbols = NULL;
2088 oc->sections = NULL;
2089 oc->proddables = NULL;
2090
2091 #ifndef USE_MMAP
2092 #ifdef darwin_HOST_OS
2093 oc->misalignment = misalignment;
2094 #endif
2095 #endif
2096
2097 /* chain it onto the list of objects */
2098 oc->next = objects;
2099 objects = oc;
2100
2101 IF_DEBUG(linker, debugBelch("mkOc: done\n"));
2102 return oc;
2103 }
2104
2105 HsInt
2106 loadArchive( pathchar *path )
2107 {
2108 ObjectCode* oc;
2109 char *image;
2110 int memberSize;
2111 FILE *f;
2112 int n;
2113 size_t thisFileNameSize;
2114 char *fileName;
2115 size_t fileNameSize;
2116 int isObject, isGnuIndex;
2117 char tmp[20];
2118 char *gnuFileIndex;
2119 int gnuFileIndexSize;
2120 #if defined(darwin_HOST_OS)
2121 int i;
2122 uint32_t nfat_arch, nfat_offset, cputype, cpusubtype;
2123 #if defined(i386_HOST_ARCH)
2124 const uint32_t mycputype = CPU_TYPE_X86;
2125 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_ALL;
2126 #elif defined(x86_64_HOST_ARCH)
2127 const uint32_t mycputype = CPU_TYPE_X86_64;
2128 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_64_ALL;
2129 #elif defined(powerpc_HOST_ARCH)
2130 const uint32_t mycputype = CPU_TYPE_POWERPC;
2131 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2132 #elif defined(powerpc64_HOST_ARCH)
2133 const uint32_t mycputype = CPU_TYPE_POWERPC64;
2134 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2135 #else
2136 #error Unknown Darwin architecture
2137 #endif
2138 #if !defined(USE_MMAP)
2139 int misalignment;
2140 #endif
2141 #endif
2142
2143 IF_DEBUG(linker, debugBelch("loadArchive: start\n"));
2144 IF_DEBUG(linker, debugBelch("loadArchive: Loading archive `%" PATH_FMT" '\n", path));
2145
2146 if (dynamicGhcPrograms) {
2147 barf("loadArchive called, but using dynamic GHC (%s)", path);
2148 }
2149
2150 gnuFileIndex = NULL;
2151 gnuFileIndexSize = 0;
2152
2153 fileNameSize = 32;
2154 fileName = stgMallocBytes(fileNameSize, "loadArchive(fileName)");
2155
2156 f = pathopen(path, WSTR("rb"));
2157 if (!f)
2158 barf("loadObj: can't read `%s'", path);
2159
2160 /* Check if this is an archive by looking for the magic "!<arch>\n"
2161 * string. Usually, if this fails, we barf and quit. On Darwin however,
2162 * we may have a fat archive, which contains archives for more than
2163 * one architecture. Fat archives start with the magic number 0xcafebabe,
2164 * always stored big endian. If we find a fat_header, we scan through
2165 * the fat_arch structs, searching through for one for our host
2166 * architecture. If a matching struct is found, we read the offset
2167 * of our archive data (nfat_offset) and seek forward nfat_offset bytes
2168 * from the start of the file.
2169 *
2170 * A subtlety is that all of the members of the fat_header and fat_arch
2171 * structs are stored big endian, so we need to call byte order
2172 * conversion functions.
2173 *
2174 * If we find the appropriate architecture in a fat archive, we gobble
2175 * its magic "!<arch>\n" string and continue processing just as if
2176 * we had a single architecture archive.
2177 */
2178
2179 n = fread ( tmp, 1, 8, f );
2180 if (n != 8)
2181 barf("loadArchive: Failed reading header from `%s'", path);
2182 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2183
2184 #if defined(darwin_HOST_OS)
2185 /* Not a standard archive, look for a fat archive magic number: */
2186 if (ntohl(*(uint32_t *)tmp) == FAT_MAGIC) {
2187 nfat_arch = ntohl(*(uint32_t *)(tmp + 4));
2188 IF_DEBUG(linker, debugBelch("loadArchive: found a fat archive containing %d architectures\n", nfat_arch));
2189 nfat_offset = 0;
2190
2191 for (i = 0; i < (int)nfat_arch; i++) {
2192 /* search for the right arch */
2193 n = fread( tmp, 1, 20, f );
2194 if (n != 8)
2195 barf("loadArchive: Failed reading arch from `%s'", path);
2196 cputype = ntohl(*(uint32_t *)tmp);
2197 cpusubtype = ntohl(*(uint32_t *)(tmp + 4));
2198
2199 if (cputype == mycputype && cpusubtype == mycpusubtype) {
2200 IF_DEBUG(linker, debugBelch("loadArchive: found my archive in a fat archive\n"));
2201 nfat_offset = ntohl(*(uint32_t *)(tmp + 8));
2202 break;
2203 }
2204 }
2205
2206 if (nfat_offset == 0) {
2207 barf ("loadArchive: searched %d architectures, but no host arch found", (int)nfat_arch);
2208 }
2209 else {
2210 n = fseek( f, nfat_offset, SEEK_SET );
2211 if (n != 0)
2212 barf("loadArchive: Failed to seek to arch in `%s'", path);
2213 n = fread ( tmp, 1, 8, f );
2214 if (n != 8)
2215 barf("loadArchive: Failed reading header from `%s'", path);
2216 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2217 barf("loadArchive: couldn't find archive in `%s' at offset %d", path, nfat_offset);
2218 }
2219 }
2220 }
2221 else {
2222 barf("loadArchive: Neither an archive, nor a fat archive: `%s'", path);
2223 }
2224
2225 #else
2226 barf("loadArchive: Not an archive: `%s'", path);
2227 #endif
2228 }
2229
2230 IF_DEBUG(linker, debugBelch("loadArchive: loading archive contents\n"));
2231
2232 while(1) {
2233 n = fread ( fileName, 1, 16, f );
2234 if (n != 16) {
2235 if (feof(f)) {
2236 IF_DEBUG(linker, debugBelch("loadArchive: EOF while reading from '%" PATH_FMT "'\n", path));
2237 break;
2238 }
2239 else {
2240 barf("loadArchive: Failed reading file name from `%s'", path);
2241 }
2242 }
2243
2244 #if defined(darwin_HOST_OS)
2245 if (strncmp(fileName, "!<arch>\n", 8) == 0) {
2246 IF_DEBUG(linker, debugBelch("loadArchive: found the start of another archive, breaking\n"));
2247 break;
2248 }
2249 #endif
2250
2251 n = fread ( tmp, 1, 12, f );
2252 if (n != 12)
2253 barf("loadArchive: Failed reading mod time from `%s'", path);
2254 n = fread ( tmp, 1, 6, f );
2255 if (n != 6)
2256 barf("loadArchive: Failed reading owner from `%s'", path);
2257 n = fread ( tmp, 1, 6, f );
2258 if (n != 6)
2259 barf("loadArchive: Failed reading group from `%s'", path);
2260 n = fread ( tmp, 1, 8, f );
2261 if (n != 8)
2262 barf("loadArchive: Failed reading mode from `%s'", path);
2263 n = fread ( tmp, 1, 10, f );
2264 if (n != 10)
2265 barf("loadArchive: Failed reading size from `%s'", path);
2266 tmp[10] = '\0';
2267 for (n = 0; isdigit(tmp[n]); n++);
2268 tmp[n] = '\0';
2269 memberSize = atoi(tmp);
2270
2271 IF_DEBUG(linker, debugBelch("loadArchive: size of this archive member is %d\n", memberSize));
2272 n = fread ( tmp, 1, 2, f );
2273 if (n != 2)
2274 barf("loadArchive: Failed reading magic from `%s'", path);
2275 if (strncmp(tmp, "\x60\x0A", 2) != 0)
2276 barf("loadArchive: Failed reading magic from `%s' at %ld. Got %c%c",
2277 path, ftell(f), tmp[0], tmp[1]);
2278
2279 isGnuIndex = 0;
2280 /* Check for BSD-variant large filenames */
2281 if (0 == strncmp(fileName, "#1/", 3)) {
2282 fileName[16] = '\0';
2283 if (isdigit(fileName[3])) {
2284 for (n = 4; isdigit(fileName[n]); n++);
2285 fileName[n] = '\0';
2286 thisFileNameSize = atoi(fileName + 3);
2287 memberSize -= thisFileNameSize;
2288 if (thisFileNameSize >= fileNameSize) {
2289 /* Double it to avoid potentially continually
2290 increasing it by 1 */
2291 fileNameSize = thisFileNameSize * 2;
2292 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2293 }
2294 n = fread ( fileName, 1, thisFileNameSize, f );
2295 if (n != (int)thisFileNameSize) {
2296 barf("loadArchive: Failed reading filename from `%s'",
2297 path);
2298 }
2299 fileName[thisFileNameSize] = 0;
2300
2301 /* On OS X at least, thisFileNameSize is the size of the
2302 fileName field, not the length of the fileName
2303 itself. */
2304 thisFileNameSize = strlen(fileName);
2305 }
2306 else {
2307 barf("loadArchive: BSD-variant filename size not found while reading filename from `%s'", path);
2308 }
2309 }
2310 /* Check for GNU file index file */
2311 else if (0 == strncmp(fileName, "//", 2)) {
2312 fileName[0] = '\0';
2313 thisFileNameSize = 0;
2314 isGnuIndex = 1;
2315 }
2316 /* Check for a file in the GNU file index */
2317 else if (fileName[0] == '/') {
2318 if (isdigit(fileName[1])) {
2319 int i;
2320
2321 for (n = 2; isdigit(fileName[n]); n++);
2322 fileName[n] = '\0';
2323 n = atoi(fileName + 1);
2324
2325 if (gnuFileIndex == NULL) {
2326 barf("loadArchive: GNU-variant filename without an index while reading from `%s'", path);
2327 }
2328 if (n < 0 || n > gnuFileIndexSize) {
2329 barf("loadArchive: GNU-variant filename offset %d out of range [0..%d] while reading filename from `%s'", n, gnuFileIndexSize, path);
2330 }
2331 if (n != 0 && gnuFileIndex[n - 1] != '\n') {
2332 barf("loadArchive: GNU-variant filename offset %d invalid (range [0..%d]) while reading filename from `%s'", n, gnuFileIndexSize, path);
2333 }
2334 for (i = n; gnuFileIndex[i] != '/'; i++);
2335 thisFileNameSize = i - n;
2336 if (thisFileNameSize >= fileNameSize) {
2337 /* Double it to avoid potentially continually
2338 increasing it by 1 */
2339 fileNameSize = thisFileNameSize * 2;
2340 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2341 }
2342 memcpy(fileName, gnuFileIndex + n, thisFileNameSize);
2343 fileName[thisFileNameSize] = '\0';
2344 }
2345 else if (fileName[1] == ' ') {
2346 fileName[0] = '\0';
2347 thisFileNameSize = 0;
2348 }
2349 else {
2350 barf("loadArchive: GNU-variant filename offset not found while reading filename from `%s'", path);
2351 }
2352 }
2353 /* Finally, the case where the filename field actually contains
2354 the filename */
2355 else {
2356 /* GNU ar terminates filenames with a '/', this allowing
2357 spaces in filenames. So first look to see if there is a
2358 terminating '/'. */
2359 for (thisFileNameSize = 0;
2360 thisFileNameSize < 16;
2361 thisFileNameSize++) {
2362 if (fileName[thisFileNameSize] == '/') {
2363 fileName[thisFileNameSize] = '\0';
2364 break;
2365 }
2366 }
2367 /* If we didn't find a '/', then a space teminates the
2368 filename. Note that if we don't find one, then
2369 thisFileNameSize ends up as 16, and we already have the
2370 '\0' at the end. */
2371 if (thisFileNameSize == 16) {
2372 for (thisFileNameSize = 0;
2373 thisFileNameSize < 16;
2374 thisFileNameSize++) {
2375 if (fileName[thisFileNameSize] == ' ') {
2376 fileName[thisFileNameSize] = '\0';
2377 break;
2378 }
2379 }
2380 }
2381 }
2382
2383 IF_DEBUG(linker,
2384 debugBelch("loadArchive: Found member file `%s'\n", fileName));
2385
2386 isObject = thisFileNameSize >= 2
2387 && fileName[thisFileNameSize - 2] == '.'
2388 && fileName[thisFileNameSize - 1] == 'o';
2389
2390 IF_DEBUG(linker, debugBelch("loadArchive: \tthisFileNameSize = %d\n", (int)thisFileNameSize));
2391 IF_DEBUG(linker, debugBelch("loadArchive: \tisObject = %d\n", isObject));
2392
2393 if (isObject) {
2394 char *archiveMemberName;
2395
2396 IF_DEBUG(linker, debugBelch("loadArchive: Member is an object file...loading...\n"));
2397
2398 /* We can't mmap from the archive directly, as object
2399 files need to be 8-byte aligned but files in .ar
2400 archives are 2-byte aligned. When possible we use mmap
2401 to get some anonymous memory, as on 64-bit platforms if
2402 we use malloc then we can be given memory above 2^32.
2403 In the mmap case we're probably wasting lots of space;
2404 we could do better. */
2405 #if defined(USE_MMAP)
2406 image = mmapForLinker(memberSize, MAP_ANONYMOUS, -1);
2407 #elif defined(mingw32_HOST_OS)
2408 // TODO: We would like to use allocateExec here, but allocateExec
2409 // cannot currently allocate blocks large enough.
2410 {
2411 int offset;
2412 #if defined(x86_64_HOST_ARCH)
2413 /* We get back 8-byte aligned memory (is that guaranteed?), but
2414 the offsets to the sections within the file are all 4 mod 8
2415 (is that guaranteed?). We therefore need to offset the image
2416 by 4, so that all the pointers are 8-byte aligned, so that
2417 pointer tagging works. */
2418 offset = 4;
2419 #else
2420 offset = 0;
2421 #endif
2422 image = VirtualAlloc(NULL, memberSize + offset,
2423 MEM_RESERVE | MEM_COMMIT,
2424 PAGE_EXECUTE_READWRITE);
2425 image += offset;
2426 }
2427 #elif defined(darwin_HOST_OS)
2428 /* See loadObj() */
2429 misalignment = machoGetMisalignment(f);
2430 image = stgMallocBytes(memberSize + misalignment, "loadArchive(image)");
2431 image += misalignment;
2432 #else
2433 image = stgMallocBytes(memberSize, "loadArchive(image)");
2434 #endif
2435 n = fread ( image, 1, memberSize, f );
2436 if (n != memberSize) {
2437 barf("loadArchive: error whilst reading `%s'", path);
2438 }
2439
2440 archiveMemberName = stgMallocBytes(pathlen(path) + thisFileNameSize + 3,
2441 "loadArchive(file)");
2442 sprintf(archiveMemberName, "%" PATH_FMT "(%.*s)",
2443 path, (int)thisFileNameSize, fileName);
2444
2445 oc = mkOc(path, image, memberSize, archiveMemberName
2446 #ifndef USE_MMAP
2447 #ifdef darwin_HOST_OS
2448 , misalignment
2449 #endif
2450 #endif
2451 );
2452
2453 stgFree(archiveMemberName);
2454
2455 if (0 == loadOc(oc)) {
2456 stgFree(fileName);
2457 return 0;
2458 }
2459 }
2460 else if (isGnuIndex) {
2461 if (gnuFileIndex != NULL) {
2462 barf("loadArchive: GNU-variant index found, but already have an index, while reading filename from `%s'", path);
2463 }
2464 IF_DEBUG(linker, debugBelch("loadArchive: Found GNU-variant file index\n"));
2465 #ifdef USE_MMAP
2466 gnuFileIndex = mmapForLinker(memberSize + 1, MAP_ANONYMOUS, -1);
2467 #else
2468 gnuFileIndex = stgMallocBytes(memberSize + 1, "loadArchive(image)");
2469 #endif
2470 n = fread ( gnuFileIndex, 1, memberSize, f );
2471 if (n != memberSize) {
2472 barf("loadArchive: error whilst reading `%s'", path);
2473 }
2474 gnuFileIndex[memberSize] = '/';
2475 gnuFileIndexSize = memberSize;
2476 }
2477 else {
2478 IF_DEBUG(linker, debugBelch("loadArchive: '%s' does not appear to be an object file\n", fileName));
2479 n = fseek(f, memberSize, SEEK_CUR);
2480 if (n != 0)
2481 barf("loadArchive: error whilst seeking by %d in `%s'",
2482 memberSize, path);
2483 }
2484
2485 /* .ar files are 2-byte aligned */
2486 if (memberSize % 2) {
2487 IF_DEBUG(linker, debugBelch("loadArchive: trying to read one pad byte\n"));
2488 n = fread ( tmp, 1, 1, f );
2489 if (n != 1) {
2490 if (feof(f)) {
2491 IF_DEBUG(linker, debugBelch("loadArchive: found EOF while reading one pad byte\n"));
2492 break;
2493 }
2494 else {
2495 barf("loadArchive: Failed reading padding from `%s'", path);
2496 }
2497 }
2498 IF_DEBUG(linker, debugBelch("loadArchive: successfully read one pad byte\n"));
2499 }
2500 IF_DEBUG(linker, debugBelch("loadArchive: reached end of archive loading while loop\n"));
2501 }
2502
2503 fclose(f);
2504
2505 stgFree(fileName);
2506 if (gnuFileIndex != NULL) {
2507 #ifdef USE_MMAP
2508 munmap(gnuFileIndex, gnuFileIndexSize + 1);
2509 #else
2510 stgFree(gnuFileIndex);
2511 #endif
2512 }
2513
2514 IF_DEBUG(linker, debugBelch("loadArchive: done\n"));
2515 return 1;
2516 }
2517
2518 /* -----------------------------------------------------------------------------
2519 * Load an obj (populate the global symbol table, but don't resolve yet)
2520 *
2521 * Returns: 1 if ok, 0 on error.
2522 */
2523 HsInt
2524 loadObj( pathchar *path )
2525 {
2526 ObjectCode* oc;
2527 char *image;
2528 int fileSize;
2529 struct_stat st;
2530 int r;
2531 #ifdef USE_MMAP
2532 int fd;
2533 #else
2534 FILE *f;
2535 # if defined(darwin_HOST_OS)
2536 int misalignment;
2537 # endif
2538 #endif
2539 IF_DEBUG(linker, debugBelch("loadObj %" PATH_FMT "\n", path));
2540
2541 if (dynamicGhcPrograms) {
2542 barf("loadObj called, but using dynamic GHC (%s)", path);
2543 }
2544
2545 initLinker();
2546
2547 /* debugBelch("loadObj %s\n", path ); */
2548
2549 /* Check that we haven't already loaded this object.
2550 Ignore requests to load multiple times */
2551 {
2552 ObjectCode *o;
2553 int is_dup = 0;
2554 for (o = objects; o; o = o->next) {
2555 if (0 == pathcmp(o->fileName, path)) {
2556 is_dup = 1;
2557 break; /* don't need to search further */
2558 }
2559 }
2560 if (is_dup) {
2561 IF_DEBUG(linker, debugBelch(
2562 "GHCi runtime linker: warning: looks like you're trying to load the\n"
2563 "same object file twice:\n"
2564 " %" PATH_FMT "\n"
2565 "GHCi will ignore this, but be warned.\n"
2566 , path));
2567 return 1; /* success */
2568 }
2569 }
2570
2571 r = pathstat(path, &st);
2572 if (r == -1) {
2573 IF_DEBUG(linker, debugBelch("File doesn't exist\n"));
2574 return 0;
2575 }
2576
2577 fileSize = st.st_size;
2578
2579 #ifdef USE_MMAP
2580 /* On many architectures malloc'd memory isn't executable, so we need to use mmap. */
2581
2582 #if defined(openbsd_HOST_OS)
2583 fd = open(path, O_RDONLY, S_IRUSR);
2584 #else
2585 fd = open(path, O_RDONLY);
2586 #endif
2587 if (fd == -1)
2588 barf("loadObj: can't open `%s'", path);
2589
2590 image = mmapForLinker(fileSize, 0, fd);
2591
2592 close(fd);
2593
2594 #else /* !USE_MMAP */
2595 /* load the image into memory */
2596 f = pathopen(path, WSTR("rb"));
2597 if (!f)
2598 barf("loadObj: can't read `%" PATH_FMT "'", path);
2599
2600 # if defined(mingw32_HOST_OS)
2601 // TODO: We would like to use allocateExec here, but allocateExec
2602 // cannot currently allocate blocks large enough.
2603 {
2604 int offset;
2605 #if defined(x86_64_HOST_ARCH)
2606 /* We get back 8-byte aligned memory (is that guaranteed?), but
2607 the offsets to the sections within the file are all 4 mod 8
2608 (is that guaranteed?). We therefore need to offset the image
2609 by 4, so that all the pointers are 8-byte aligned, so that
2610 pointer tagging works. */
2611 offset = 4;
2612 #else
2613 offset = 0;
2614 #endif
2615 image = VirtualAlloc(NULL, fileSize + offset, MEM_RESERVE | MEM_COMMIT,
2616 PAGE_EXECUTE_READWRITE);
2617 image += offset;
2618 }
2619 # elif defined(darwin_HOST_OS)
2620 // In a Mach-O .o file, all sections can and will be misaligned
2621 // if the total size of the headers is not a multiple of the
2622 // desired alignment. This is fine for .o files that only serve
2623 // as input for the static linker, but it's not fine for us,
2624 // as SSE (used by gcc for floating point) and Altivec require
2625 // 16-byte alignment.
2626 // We calculate the correct alignment from the header before
2627 // reading the file, and then we misalign image on purpose so
2628 // that the actual sections end up aligned again.
2629 misalignment = machoGetMisalignment(f);
2630 image = stgMallocBytes(fileSize + misalignment, "loadObj(image)");
2631 image += misalignment;
2632 # else
2633 image = stgMallocBytes(fileSize, "loadObj(image)");
2634 # endif
2635
2636 {
2637 int n;
2638 n = fread ( image, 1, fileSize, f );
2639 if (n != fileSize)
2640 barf("loadObj: error whilst reading `%s'", path);
2641 }
2642 fclose(f);
2643 #endif /* USE_MMAP */
2644
2645 oc = mkOc(path, image, fileSize, NULL
2646 #ifndef USE_MMAP
2647 #ifdef darwin_HOST_OS
2648 , misalignment
2649 #endif
2650 #endif
2651 );
2652
2653 return loadOc(oc);
2654 }
2655
2656 static HsInt
2657 loadOc( ObjectCode* oc ) {
2658 int r;
2659
2660 IF_DEBUG(linker, debugBelch("loadOc: start\n"));
2661
2662 # if defined(OBJFORMAT_MACHO) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH))
2663 r = ocAllocateSymbolExtras_MachO ( oc );
2664 if (!r) {
2665 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_MachO failed\n"));
2666 return r;
2667 }
2668 # elif defined(OBJFORMAT_ELF) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH))
2669 r = ocAllocateSymbolExtras_ELF ( oc );
2670 if (!r) {
2671 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_ELF failed\n"));
2672 return r;
2673 }
2674 #endif
2675
2676 /* verify the in-memory image */
2677 # if defined(OBJFORMAT_ELF)
2678 r = ocVerifyImage_ELF ( oc );
2679 # elif defined(OBJFORMAT_PEi386)
2680 r = ocVerifyImage_PEi386 ( oc );
2681 # elif defined(OBJFORMAT_MACHO)
2682 r = ocVerifyImage_MachO ( oc );
2683 # else
2684 barf("loadObj: no verify method");
2685 # endif
2686 if (!r) {
2687 IF_DEBUG(linker, debugBelch("loadOc: ocVerifyImage_* failed\n"));
2688 return r;
2689 }
2690
2691 /* build the symbol list for this image */
2692 # if defined(OBJFORMAT_ELF)
2693 r = ocGetNames_ELF ( oc );
2694 # elif defined(OBJFORMAT_PEi386)
2695 r = ocGetNames_PEi386 ( oc );
2696 # elif defined(OBJFORMAT_MACHO)
2697 r = ocGetNames_MachO ( oc );
2698 # else
2699 barf("loadObj: no getNames method");
2700 # endif
2701 if (!r) {
2702 IF_DEBUG(linker, debugBelch("loadOc: ocGetNames_* failed\n"));
2703 return r;
2704 }
2705
2706 /* loaded, but not resolved yet */
2707 oc->status = OBJECT_LOADED;
2708 IF_DEBUG(linker, debugBelch("loadOc: done.\n"));
2709
2710 return 1;
2711 }
2712
2713 /* -----------------------------------------------------------------------------
2714 * resolve all the currently unlinked objects in memory
2715 *
2716 * Returns: 1 if ok, 0 on error.
2717 */
2718 HsInt
2719 resolveObjs( void )
2720 {
2721 ObjectCode *oc;
2722 int r;
2723
2724 IF_DEBUG(linker, debugBelch("resolveObjs: start\n"));
2725 initLinker();
2726
2727 for (oc = objects; oc; oc = oc->next) {
2728 if (oc->status != OBJECT_RESOLVED) {
2729 # if defined(OBJFORMAT_ELF)
2730 r = ocResolve_ELF ( oc );
2731 # elif defined(OBJFORMAT_PEi386)
2732 r = ocResolve_PEi386 ( oc );
2733 # elif defined(OBJFORMAT_MACHO)
2734 r = ocResolve_MachO ( oc );
2735 # else
2736 barf("resolveObjs: not implemented on this platform");
2737 # endif
2738 if (!r) { return r; }
2739 oc->status = OBJECT_RESOLVED;
2740 }
2741 }
2742 IF_DEBUG(linker, debugBelch("resolveObjs: done\n"));
2743 return 1;
2744 }
2745
2746 /* -----------------------------------------------------------------------------
2747 * delete an object from the pool
2748 */
2749 HsInt
2750 unloadObj( pathchar *path )
2751 {
2752 ObjectCode *oc, *prev;
2753 HsBool unloadedAnyObj = HS_BOOL_FALSE;
2754
2755 ASSERT(symhash != NULL);
2756 ASSERT(objects != NULL);
2757
2758 initLinker();
2759
2760 prev = NULL;
2761 for (oc = objects; oc; prev = oc, oc = oc->next) {
2762 if (!pathcmp(oc->fileName,path)) {
2763
2764 /* Remove all the mappings for the symbols within this
2765 * object..
2766 */
2767 {
2768 int i;
2769 for (i = 0; i < oc->n_symbols; i++) {
2770 if (oc->symbols[i] != NULL) {
2771 removeStrHashTable(symhash, oc->symbols[i], NULL);
2772 }
2773 }
2774 }
2775
2776 if (prev == NULL) {
2777 objects = oc->next;
2778 } else {
2779 prev->next = oc->next;
2780 }
2781
2782 // We're going to leave this in place, in case there are
2783 // any pointers from the heap into it:
2784 // #ifdef mingw32_HOST_OS
2785 // If uncommenting, note that currently oc->image is
2786 // not the right address to free on Win64, as we added
2787 // 4 bytes of padding at the start
2788 // VirtualFree(oc->image);
2789 // #else
2790 // stgFree(oc->image);
2791 // #endif
2792 stgFree(oc->fileName);
2793 stgFree(oc->archiveMemberName);
2794 stgFree(oc->symbols);
2795 stgFree(oc->sections);
2796 stgFree(oc);
2797
2798 /* This could be a member of an archive so continue
2799 * unloading other members. */
2800 unloadedAnyObj = HS_BOOL_TRUE;
2801 }
2802 }
2803
2804 if (unloadedAnyObj) {
2805 return 1;
2806 }
2807 else {
2808 errorBelch("unloadObj: can't find `%" PATH_FMT "' to unload", path);
2809 return 0;
2810 }
2811 }
2812
2813 /* -----------------------------------------------------------------------------
2814 * Sanity checking. For each ObjectCode, maintain a list of address ranges
2815 * which may be prodded during relocation, and abort if we try and write
2816 * outside any of these.
2817 */
2818 static void
2819 addProddableBlock ( ObjectCode* oc, void* start, int size )
2820 {
2821 ProddableBlock* pb
2822 = stgMallocBytes(sizeof(ProddableBlock), "addProddableBlock");
2823
2824 IF_DEBUG(linker, debugBelch("addProddableBlock: %p %p %d\n", oc, start, size));
2825 ASSERT(size > 0);
2826 pb->start = start;
2827 pb->size = size;
2828 pb->next = oc->proddables;
2829 oc->proddables = pb;
2830 }
2831
2832 static void
2833 checkProddableBlock (ObjectCode *oc, void *addr, size_t size )
2834 {
2835 ProddableBlock* pb;
2836
2837 for (pb = oc->proddables; pb != NULL; pb = pb->next) {
2838 char* s = (char*)(pb->start);
2839 char* e = s + pb->size;
2840 char* a = (char*)addr;
2841 if (a >= s && (a+size) <= e) return;
2842 }
2843 barf("checkProddableBlock: invalid fixup in runtime linker: %p", addr);
2844 }
2845
2846 /* -----------------------------------------------------------------------------
2847 * Section management.
2848 */
2849 static void
2850 addSection ( ObjectCode* oc, SectionKind kind,
2851 void* start, void* end )
2852 {
2853 Section* s = stgMallocBytes(sizeof(Section), "addSection");
2854 s->start = start;
2855 s->end = end;
2856 s->kind = kind;
2857 s->next = oc->sections;
2858 oc->sections = s;
2859
2860 IF_DEBUG(linker, debugBelch("addSection: %p-%p (size %lld), kind %d\n",
2861 start, ((char*)end)-1, ((long long)(size_t)end) - ((long long)(size_t)start) + 1, kind ));
2862 }
2863
2864
2865 /* --------------------------------------------------------------------------
2866 * Symbol Extras.
2867 * This is about allocating a small chunk of memory for every symbol in the
2868 * object file. We make sure that the SymboLExtras are always "in range" of
2869 * limited-range PC-relative instructions on various platforms by allocating
2870 * them right next to the object code itself.
2871 */
2872
2873 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2874 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2875
2876 /*
2877 ocAllocateSymbolExtras
2878
2879 Allocate additional space at the end of the object file image to make room
2880 for jump islands (powerpc, x86_64, arm) and GOT entries (x86_64).
2881
2882 PowerPC relative branch instructions have a 24 bit displacement field.
2883 As PPC code is always 4-byte-aligned, this yields a +-32MB range.
2884 If a particular imported symbol is outside this range, we have to redirect
2885 the jump to a short piece of new code that just loads the 32bit absolute
2886 address and jumps there.
2887 On x86_64, PC-relative jumps and PC-relative accesses to the GOT are limited
2888 to 32 bits (+-2GB).
2889
2890 This function just allocates space for one SymbolExtra for every
2891 undefined symbol in the object file. The code for the jump islands is
2892 filled in by makeSymbolExtra below.
2893 */
2894
2895 static int ocAllocateSymbolExtras( ObjectCode* oc, int count, int first )
2896 {
2897 #ifdef USE_MMAP
2898 int pagesize, n, m;
2899 #endif
2900 int aligned;
2901 #ifndef USE_MMAP
2902 int misalignment = 0;
2903 #ifdef darwin_HOST_OS
2904 misalignment = oc->misalignment;
2905 #endif
2906 #endif
2907
2908 if( count > 0 )
2909 {
2910 // round up to the nearest 4
2911 aligned = (oc->fileSize + 3) & ~3;
2912
2913 #ifdef USE_MMAP
2914 pagesize = getpagesize();
2915 n = ROUND_UP( oc->fileSize, pagesize );
2916 m = ROUND_UP( aligned + sizeof (SymbolExtra) * count, pagesize );
2917
2918 /* we try to use spare space at the end of the last page of the
2919 * image for the jump islands, but if there isn't enough space
2920 * then we have to map some (anonymously, remembering MAP_32BIT).
2921 */
2922 if( m > n ) // we need to allocate more pages
2923 {
2924 if (USE_CONTIGUOUS_MMAP)
2925 {
2926 /* Keep image and symbol_extras contiguous */
2927 void *new = mmapForLinker(n + (sizeof(SymbolExtra) * count),
2928 MAP_ANONYMOUS, -1);
2929 if (new)
2930 {
2931 memcpy(new, oc->image, oc->fileSize);
2932 munmap(oc->image, n);
2933 oc->image = new;
2934 oc->symbol_extras = (SymbolExtra *) (oc->image + n);
2935 }
2936 else
2937 oc->symbol_extras = NULL;
2938 }
2939 else
2940 {
2941 oc->symbol_extras = mmapForLinker(sizeof(SymbolExtra) * count,
2942 MAP_ANONYMOUS, -1);
2943 }
2944 }
2945 else
2946 {
2947 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
2948 }
2949 #else
2950 oc->image -= misalignment;
2951 oc->image = stgReallocBytes( oc->image,
2952 misalignment +
2953 aligned + sizeof (SymbolExtra) * count,
2954 "ocAllocateSymbolExtras" );
2955 oc->image += misalignment;
2956
2957 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
2958 #endif /* USE_MMAP */
2959
2960 memset( oc->symbol_extras, 0, sizeof (SymbolExtra) * count );
2961 }
2962 else
2963 oc->symbol_extras = NULL;
2964
2965 oc->first_symbol_extra = first;
2966 oc->n_symbol_extras = count;
2967
2968 return 1;
2969 }
2970
2971 #endif
2972 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2973
2974 #if defined(arm_HOST_ARCH)
2975
2976 static void
2977 ocFlushInstructionCache( ObjectCode *oc )
2978 {
2979 // Object code
2980 __clear_cache(oc->image, oc->image + oc->fileSize);
2981 // Jump islands
2982 __clear_cache(oc->symbol_extras, &oc->symbol_extras[oc->n_symbol_extras]);
2983 }
2984
2985 #endif
2986
2987 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
2988 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2989
2990 static SymbolExtra* makeSymbolExtra( ObjectCode* oc,
2991 unsigned long symbolNumber,
2992 unsigned long target )
2993 {
2994 SymbolExtra *extra;
2995
2996 ASSERT( symbolNumber >= oc->first_symbol_extra
2997 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
2998
2999 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3000
3001 #ifdef powerpc_HOST_ARCH
3002 // lis r12, hi16(target)
3003 extra->jumpIsland.lis_r12 = 0x3d80;
3004 extra->jumpIsland.hi_addr = target >> 16;
3005
3006 // ori r12, r12, lo16(target)
3007 extra->jumpIsland.ori_r12_r12 = 0x618c;
3008 extra->jumpIsland.lo_addr = target & 0xffff;
3009
3010 // mtctr r12
3011 extra->jumpIsland.mtctr_r12 = 0x7d8903a6;
3012
3013 // bctr
3014 extra->jumpIsland.bctr = 0x4e800420;
3015 #endif
3016 #ifdef x86_64_HOST_ARCH
3017 // jmp *-14(%rip)
3018 static uint8_t jmp[] = { 0xFF, 0x25, 0xF2, 0xFF, 0xFF, 0xFF };
3019 extra->addr = target;
3020 memcpy(extra->jumpIsland, jmp, 6);
3021 #endif
3022
3023 return extra;
3024 }
3025
3026 #endif
3027 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3028
3029 #ifdef arm_HOST_ARCH
3030 static SymbolExtra* makeArmSymbolExtra( ObjectCode* oc,
3031 unsigned long symbolNumber,
3032 unsigned long target,
3033 int fromThumb,
3034 int toThumb )
3035 {
3036 SymbolExtra *extra;
3037
3038 ASSERT( symbolNumber >= oc->first_symbol_extra
3039 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3040
3041 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3042
3043 // Make sure instruction mode bit is set properly
3044 if (toThumb)
3045 target |= 1;
3046 else
3047 target &= ~1;
3048
3049 if (!fromThumb) {
3050 // In ARM encoding:
3051 // movw r12, #0
3052 // movt r12, #0
3053 // bx r12
3054 uint32_t code[] = { 0xe300c000, 0xe340c000, 0xe12fff1c };
3055
3056 // Patch lower half-word into movw
3057 code[0] |= ((target>>12) & 0xf) << 16;
3058 code[0] |= target & 0xfff;
3059 // Patch upper half-word into movt
3060 target >>= 16;
3061 code[1] |= ((target>>12) & 0xf) << 16;
3062 code[1] |= target & 0xfff;
3063
3064 memcpy(extra->jumpIsland, code, 12);
3065
3066 } else {
3067 // In Thumb encoding:
3068 // movw r12, #0
3069 // movt r12, #0
3070 // bx r12
3071 uint16_t code[] = { 0xf240, 0x0c00,
3072 0xf2c0, 0x0c00,
3073 0x4760 };
3074
3075 // Patch lower half-word into movw
3076 code[0] |= (target>>12) & 0xf;
3077 code[0] |= ((target>>11) & 0x1) << 10;
3078 code[1] |= ((target>>8) & 0x7) << 12;
3079 code[1] |= target & 0xff;
3080 // Patch upper half-word into movt
3081 target >>= 16;
3082 code[2] |= (target>>12) & 0xf;
3083 code[2] |= ((target>>11) & 0x1) << 10;
3084 code[3] |= ((target>>8) & 0x7) << 12;
3085 code[3] |= target & 0xff;
3086
3087 memcpy(extra->jumpIsland, code, 10);
3088 }
3089
3090 return extra;
3091 }
3092 #endif // arm_HOST_ARCH
3093
3094 /* --------------------------------------------------------------------------
3095 * PowerPC specifics (instruction cache flushing)
3096 * ------------------------------------------------------------------------*/
3097
3098 #ifdef powerpc_HOST_ARCH
3099 /*
3100 ocFlushInstructionCache
3101
3102 Flush the data & instruction caches.
3103 Because the PPC has split data/instruction caches, we have to
3104 do that whenever we modify code at runtime.
3105 */
3106
3107 static void
3108 ocFlushInstructionCacheFrom(void* begin, size_t length)
3109 {
3110 size_t n = (length + 3) / 4;
3111 unsigned long* p = begin;
3112
3113 while (n--)
3114 {
3115 __asm__ volatile ( "dcbf 0,%0\n\t"
3116 "sync\n\t"
3117 "icbi 0,%0"
3118 :
3119 : "r" (p)
3120 );
3121 p++;
3122 }
3123 __asm__ volatile ( "sync\n\t"
3124 "isync"
3125 );
3126 }
3127
3128 static void
3129 ocFlushInstructionCache( ObjectCode *oc )
3130 {
3131 /* The main object code */
3132 ocFlushInstructionCacheFrom(oc->image
3133 #ifdef darwin_HOST_OS
3134 + oc->misalignment
3135 #endif
3136 , oc->fileSize);
3137
3138 /* Jump Islands */
3139 ocFlushInstructionCacheFrom(oc->symbol_extras, sizeof(SymbolExtra) * oc->n_symbol_extras);
3140 }
3141 #endif /* powerpc_HOST_ARCH */
3142
3143
3144 /* --------------------------------------------------------------------------
3145 * PEi386 specifics (Win32 targets)
3146 * ------------------------------------------------------------------------*/
3147
3148 /* The information for this linker comes from
3149 Microsoft Portable Executable
3150 and Common Object File Format Specification
3151 revision 5.1 January 1998
3152 which SimonM says comes from the MS Developer Network CDs.
3153
3154 It can be found there (on older CDs), but can also be found
3155 online at:
3156
3157 http://www.microsoft.com/hwdev/hardware/PECOFF.asp
3158
3159 (this is Rev 6.0 from February 1999).
3160
3161 Things move, so if that fails, try searching for it via
3162
3163 http://www.google.com/search?q=PE+COFF+specification
3164
3165 The ultimate reference for the PE format is the Winnt.h
3166 header file that comes with the Platform SDKs; as always,
3167 implementations will drift wrt their documentation.
3168
3169 A good background article on the PE format is Matt Pietrek's
3170 March 1994 article in Microsoft System Journal (MSJ)
3171 (Vol.9, No. 3): "Peering Inside the PE: A Tour of the
3172 Win32 Portable Executable File Format." The info in there
3173 has recently been updated in a two part article in
3174 MSDN magazine, issues Feb and March 2002,
3175 "Inside Windows: An In-Depth Look into the Win32 Portable
3176 Executable File Format"
3177
3178 John Levine's book "Linkers and Loaders" contains useful
3179 info on PE too.
3180 */
3181
3182
3183 #if defined(OBJFORMAT_PEi386)
3184
3185
3186
3187 typedef unsigned char UChar;
3188 typedef unsigned short UInt16;
3189 typedef unsigned int UInt32;
3190 typedef int Int32;
3191 typedef unsigned long long int UInt64;
3192
3193
3194 typedef
3195 struct {
3196 UInt16 Machine;
3197 UInt16 NumberOfSections;
3198 UInt32 TimeDateStamp;
3199 UInt32 PointerToSymbolTable;
3200 UInt32 NumberOfSymbols;
3201 UInt16 SizeOfOptionalHeader;
3202 UInt16 Characteristics;
3203 }
3204 COFF_header;
3205
3206 #define sizeof_COFF_header 20
3207
3208
3209 typedef
3210 struct {
3211 UChar Name[8];
3212 UInt32 VirtualSize;
3213 UInt32 VirtualAddress;
3214 UInt32 SizeOfRawData;
3215 UInt32 PointerToRawData;
3216 UInt32 PointerToRelocations;
3217 UInt32 PointerToLinenumbers;
3218 UInt16 NumberOfRelocations;
3219 UInt16 NumberOfLineNumbers;
3220 UInt32 Characteristics;
3221 }
3222 COFF_section;
3223
3224 #define sizeof_COFF_section 40
3225
3226
3227 typedef
3228 struct {
3229 UChar Name[8];
3230 UInt32 Value;
3231 UInt16 SectionNumber;
3232 UInt16 Type;
3233 UChar StorageClass;
3234 UChar NumberOfAuxSymbols;
3235 }
3236 COFF_symbol;
3237
3238 #define sizeof_COFF_symbol 18
3239
3240
3241 typedef
3242 struct {
3243 UInt32 VirtualAddress;
3244 UInt32 SymbolTableIndex;
3245 UInt16 Type;
3246 }
3247 COFF_reloc;
3248
3249 #define sizeof_COFF_reloc 10
3250
3251
3252 /* From PE spec doc, section 3.3.2 */
3253 /* Note use of MYIMAGE_* since IMAGE_* are already defined in
3254 windows.h -- for the same purpose, but I want to know what I'm
3255 getting, here. */
3256 #define MYIMAGE_FILE_RELOCS_STRIPPED 0x0001
3257 #define MYIMAGE_FILE_EXECUTABLE_IMAGE 0x0002
3258 #define MYIMAGE_FILE_DLL 0x2000
3259 #define MYIMAGE_FILE_SYSTEM 0x1000
3260 #define MYIMAGE_FILE_BYTES_REVERSED_HI 0x8000
3261 #define MYIMAGE_FILE_BYTES_REVERSED_LO 0x0080
3262 #define MYIMAGE_FILE_32BIT_MACHINE 0x0100
3263
3264 /* From PE spec doc, section 5.4.2 and 5.4.4 */
3265 #define MYIMAGE_SYM_CLASS_EXTERNAL 2
3266 #define MYIMAGE_SYM_CLASS_STATIC 3
3267 #define MYIMAGE_SYM_UNDEFINED 0
3268
3269 /* From PE spec doc, section 4.1 */
3270 #define MYIMAGE_SCN_CNT_CODE 0x00000020
3271 #define MYIMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
3272 #define MYIMAGE_SCN_LNK_NRELOC_OVFL 0x01000000
3273
3274 /* From PE spec doc, section 5.2.1 */
3275 #define MYIMAGE_REL_I386_DIR32 0x0006
3276 #define MYIMAGE_REL_I386_REL32 0x0014
3277
3278
3279 /* We use myindex to calculate array addresses, rather than
3280 simply doing the normal subscript thing. That's because
3281 some of the above structs have sizes which are not
3282 a whole number of words. GCC rounds their sizes up to a
3283 whole number of words, which means that the address calcs
3284 arising from using normal C indexing or pointer arithmetic
3285 are just plain wrong. Sigh.
3286 */
3287 static UChar *
3288 myindex ( int scale, void* base, int index )
3289 {
3290 return
3291 ((UChar*)base) + scale * index;
3292 }
3293
3294
3295 static void
3296 printName ( UChar* name, UChar* strtab )
3297 {
3298 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3299 UInt32 strtab_offset = * (UInt32*)(name+4);
3300 debugBelch("%s", strtab + strtab_offset );
3301 } else {
3302 int i;
3303 for (i = 0; i < 8; i++) {
3304 if (name[i] == 0) break;
3305 debugBelch("%c", name[i] );
3306 }
3307 }
3308 }
3309
3310
3311 static void
3312 copyName ( UChar* name, UChar* strtab, UChar* dst, int dstSize )
3313 {
3314 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3315 UInt32 strtab_offset = * (UInt32*)(name+4);
3316 strncpy ( (char*)dst, (char*)strtab+strtab_offset, dstSize );
3317 dst[dstSize-1] = 0;
3318 } else {
3319 int i = 0;
3320 while (1) {
3321 if (i >= 8) break;
3322 if (name[i] == 0) break;
3323 dst[i] = name[i];
3324 i++;
3325 }
3326 dst[i] = 0;
3327 }
3328 }
3329
3330
3331 static UChar *
3332 cstring_from_COFF_symbol_name ( UChar* name, UChar* strtab )
3333 {
3334 UChar* newstr;
3335 /* If the string is longer than 8 bytes, look in the
3336 string table for it -- this will be correctly zero terminated.
3337 */
3338 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3339 UInt32 strtab_offset = * (UInt32*)(name+4);
3340 return ((UChar*)strtab) + strtab_offset;
3341 }
3342 /* Otherwise, if shorter than 8 bytes, return the original,
3343 which by defn is correctly terminated.
3344 */
3345 if (name[7]==0) return name;
3346 /* The annoying case: 8 bytes. Copy into a temporary
3347 (XXX which is never freed ...)
3348 */
3349 newstr = stgMallocBytes(9, "cstring_from_COFF_symbol_name");
3350 ASSERT(newstr);
3351 strncpy((char*)newstr,(char*)name,8);
3352 newstr[8] = 0;
3353 return newstr;
3354 }
3355
3356 /* Getting the name of a section is mildly tricky, so we make a
3357 function for it. Sadly, in one case we have to copy the string
3358 (when it is exactly 8 bytes long there's no trailing '\0'), so for
3359 consistency we *always* copy the string; the caller must free it
3360 */
3361 static char *
3362 cstring_from_section_name (UChar* name, UChar* strtab)
3363 {
3364 char *newstr;
3365
3366 if (name[0]=='/') {
3367 int strtab_offset = strtol((char*)name+1,NULL,10);
3368 int len = strlen(((char*)strtab) + strtab_offset);
3369
3370 newstr = stgMallocBytes(len+1, "cstring_from_section_symbol_name");
3371 strcpy((char*)newstr, (char*)((UChar*)strtab) + strtab_offset);
3372 return newstr;
3373 }
3374 else
3375 {
3376 newstr = stgMallocBytes(9, "cstring_from_section_symbol_name");
3377 ASSERT(newstr);
3378 strncpy((char*)newstr,(char*)name,8);
3379 newstr[8] = 0;
3380 return newstr;
3381 }
3382 }
3383
3384 /* Just compares the short names (first 8 chars) */
3385 static COFF_section *
3386 findPEi386SectionCalled ( ObjectCode* oc, UChar* name )
3387 {
3388 int i;
3389 COFF_header* hdr
3390 = (COFF_header*)(oc->image);
3391 COFF_section* sectab
3392 = (COFF_section*) (
3393 ((UChar*)(oc->image))
3394 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3395 );
3396 for (i = 0; i < hdr->NumberOfSections; i++) {
3397 UChar* n1;
3398 UChar* n2;
3399 COFF_section* section_i
3400 = (COFF_section*)
3401 myindex ( sizeof_COFF_section, sectab, i );
3402 n1 = (UChar*) &(section_i->Name);
3403 n2 = name;
3404 if (n1[0]==n2[0] && n1[1]==n2[1] && n1[2]==n2[2] &&
3405 n1[3]==n2[3] && n1[4]==n2[4] && n1[5]==n2[5] &&
3406 n1[6]==n2[6] && n1[7]==n2[7])
3407 return section_i;
3408 }
3409
3410 return NULL;
3411 }
3412
3413 static void
3414 zapTrailingAtSign ( UChar* sym )
3415 {
3416 # define my_isdigit(c) ((c) >= '0' && (c) <= '9')
3417 int i, j;
3418 if (sym[0] == 0) return;
3419 i = 0;
3420 while (sym[i] != 0) i++;
3421 i--;
3422 j = i;
3423 while (j > 0 && my_isdigit(sym[j])) j--;
3424 if (j > 0 && sym[j] == '@' && j != i) sym[j] = 0;
3425 # undef my_isdigit
3426 }
3427
3428 static void *
3429 lookupSymbolInDLLs ( UChar *lbl )
3430 {
3431 OpenedDLL* o_dll;
3432 void *sym;
3433
3434 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
3435 /* debugBelch("look in %s for %s\n", o_dll->name, lbl); */
3436
3437 if (lbl[0] == '_') {
3438 /* HACK: if the name has an initial underscore, try stripping
3439 it off & look that up first. I've yet to verify whether there's
3440 a Rule that governs whether an initial '_' *should always* be
3441 stripped off when mapping from import lib name to the DLL name.
3442 */
3443 sym = GetProcAddress(o_dll->instance, (char*)(lbl+1));
3444 if (sym != NULL) {
3445 /*debugBelch("found %s in %s\n", lbl+1,o_dll->name);*/
3446 return sym;
3447 }
3448 }
3449 sym = GetProcAddress(o_dll->instance, (char*)lbl);
3450 if (sym != NULL) {
3451 /*debugBelch("found %s in %s\n", lbl,o_dll->name);*/
3452 return sym;
3453 }
3454 }
3455 return NULL;
3456 }
3457
3458
3459 static int
3460 ocVerifyImage_PEi386 ( ObjectCode* oc )
3461 {
3462 int i;
3463 UInt32 j, noRelocs;
3464 COFF_header* hdr;
3465 COFF_section* sectab;
3466 COFF_symbol* symtab;
3467 UChar* strtab;
3468 /* debugBelch("\nLOADING %s\n", oc->fileName); */
3469 hdr = (COFF_header*)(oc->image);
3470 sectab = (COFF_section*) (
3471 ((UChar*)(oc->image))
3472 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3473 );
3474 symtab = (COFF_symbol*) (
3475 ((UChar*)(oc->image))
3476 + hdr->PointerToSymbolTable
3477 );
3478 strtab = ((UChar*)symtab)
3479 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3480
3481 #if defined(i386_HOST_ARCH)
3482 if (hdr->Machine != 0x14c) {
3483 errorBelch("%" PATH_FMT ": Not x86 PEi386", oc->fileName);
3484 return 0;
3485 }
3486 #elif defined(x86_64_HOST_ARCH)
3487 if (hdr->Machine != 0x8664) {
3488 errorBelch("%" PATH_FMT ": Not x86_64 PEi386", oc->fileName);
3489 return 0;
3490 }
3491 #else
3492 errorBelch("PEi386 not supported on this arch");
3493 #endif
3494
3495 if (hdr->SizeOfOptionalHeader != 0) {
3496 errorBelch("%" PATH_FMT ": PEi386 with nonempty optional header", oc->fileName);
3497 return 0;
3498 }
3499 if ( /* (hdr->Characteristics & MYIMAGE_FILE_RELOCS_STRIPPED) || */
3500 (hdr->Characteristics & MYIMAGE_FILE_EXECUTABLE_IMAGE) ||
3501 (hdr->Characteristics & MYIMAGE_FILE_DLL) ||
3502 (hdr->Characteristics & MYIMAGE_FILE_SYSTEM) ) {
3503 errorBelch("%" PATH_FMT ": Not a PEi386 object file", oc->fileName);
3504 return 0;
3505 }
3506 if ( (hdr->Characteristics & MYIMAGE_FILE_BYTES_REVERSED_HI)
3507 /* || !(hdr->Characteristics & MYIMAGE_FILE_32BIT_MACHINE) */ ) {
3508 errorBelch("%" PATH_FMT ": Invalid PEi386 word size or endiannness: %d",
3509 oc->fileName,
3510 (int)(hdr->Characteristics));
3511 return 0;
3512 }
3513 /* If the string table size is way crazy, this might indicate that
3514 there are more than 64k relocations, despite claims to the
3515 contrary. Hence this test. */
3516 /* debugBelch("strtab size %d\n", * (UInt32*)strtab); */
3517 #if 0
3518 if ( (*(UInt32*)strtab) > 600000 ) {
3519 /* Note that 600k has no special significance other than being
3520 big enough to handle the almost-2MB-sized lumps that
3521 constitute HSwin32*.o. */
3522 debugBelch("PEi386 object has suspiciously large string table; > 64k relocs?");
3523 return 0;
3524 }
3525 #endif
3526
3527 /* No further verification after this point; only debug printing. */
3528 i = 0;
3529 IF_DEBUG(linker, i=1);
3530 if (i == 0) return 1;
3531
3532 debugBelch( "sectab offset = %" FMT_Int "\n", ((UChar*)sectab) - ((UChar*)hdr) );
3533 debugBelch( "symtab offset = %" FMT_Int "\n", ((UChar*)symtab) - ((UChar*)hdr) );
3534 debugBelch( "strtab offset = %" FMT_Int "\n", ((UChar*)strtab) - ((UChar*)hdr) );
3535
3536 debugBelch("\n" );
3537 debugBelch( "Machine: 0x%x\n", (UInt32)(hdr->Machine) );
3538 debugBelch( "# sections: %d\n", (UInt32)(hdr->NumberOfSections) );
3539 debugBelch( "time/date: 0x%x\n", (UInt32)(hdr->TimeDateStamp) );
3540 debugBelch( "symtab offset: %d\n", (UInt32)(hdr->PointerToSymbolTable) );
3541 debugBelch( "# symbols: %d\n", (UInt32)(hdr->NumberOfSymbols) );
3542 debugBelch( "sz of opt hdr: %d\n", (UInt32)(hdr->SizeOfOptionalHeader) );
3543 debugBelch( "characteristics: 0x%x\n", (UInt32)(hdr->Characteristics) );
3544
3545 /* Print the section table. */
3546 debugBelch("\n" );
3547 for (i = 0; i < hdr->NumberOfSections; i++) {
3548 COFF_reloc* reltab;
3549 COFF_section* sectab_i
3550 = (COFF_section*)
3551 myindex ( sizeof_COFF_section, sectab, i );
3552 debugBelch(
3553 "\n"
3554 "section %d\n"
3555 " name `",
3556 i
3557 );
3558 printName ( sectab_i->Name, strtab );
3559 debugBelch(
3560 "'\n"
3561 " vsize %d\n"
3562 " vaddr %d\n"
3563 " data sz %d\n"
3564 " data off %d\n"
3565 " num rel %d\n"
3566 " off rel %d\n"
3567 " ptr raw 0x%x\n",
3568 sectab_i->VirtualSize,
3569 sectab_i->VirtualAddress,
3570 sectab_i->SizeOfRawData,
3571 sectab_i->PointerToRawData,
3572 sectab_i->NumberOfRelocations,
3573 sectab_i->PointerToRelocations,
3574 sectab_i->PointerToRawData
3575 );
3576 reltab = (COFF_reloc*) (
3577 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
3578 );
3579
3580 if ( sectab_i->Characteristics & MYIMAGE_SCN_LNK_NRELOC_OVFL ) {
3581 /* If the relocation field (a short) has overflowed, the
3582 * real count can be found in the first reloc entry.
3583 *
3584 * See Section 4.1 (last para) of the PE spec (rev6.0).
3585 */
3586 COFF_reloc* rel = (COFF_reloc*)
3587 myindex ( sizeof_COFF_reloc, reltab, 0 );
3588 noRelocs = rel->VirtualAddress;
3589 j = 1;
3590 } else {
3591 noRelocs = sectab_i->NumberOfRelocations;
3592 j = 0;
3593 }
3594
3595 for (; j < noRelocs; j++) {
3596 COFF_symbol* sym;
3597 COFF_reloc* rel = (COFF_reloc*)
3598 myindex ( sizeof_COFF_reloc, reltab, j );
3599 debugBelch(
3600 " type 0x%-4x vaddr 0x%-8x name `",
3601 (UInt32)rel->Type,
3602 rel->VirtualAddress );
3603 sym = (COFF_symbol*)
3604 myindex ( sizeof_COFF_symbol, symtab, rel->SymbolTableIndex );
3605 /* Hmm..mysterious looking offset - what's it for? SOF */
3606 printName ( sym->Name, strtab -10 );
3607 debugBelch("'\n" );
3608 }
3609
3610 debugBelch("\n" );
3611 }
3612 debugBelch("\n" );
3613 debugBelch("string table has size 0x%x\n", * (UInt32*)strtab );
3614 debugBelch("---START of string table---\n");
3615 for (i = 4; i < *(Int32*)strtab; i++) {
3616 if (strtab[i] == 0)
3617 debugBelch("\n"); else
3618 debugBelch("%c", strtab[i] );
3619 }
3620 debugBelch("--- END of string table---\n");
3621
3622 debugBelch("\n" );
3623 i = 0;
3624 while (1) {
3625 COFF_symbol* symtab_i;
3626 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
3627 symtab_i = (COFF_symbol*)
3628 myindex ( sizeof_COFF_symbol, symtab, i );
3629 debugBelch(
3630 "symbol %d\n"
3631 " name `",
3632 i
3633 );
3634 printName ( symtab_i->Name, strtab );
3635 debugBelch(
3636 "'\n"
3637 " value 0x%x\n"
3638 " 1+sec# %d\n"
3639 " type 0x%x\n"
3640 " sclass 0x%x\n"
3641 " nAux %d\n",
3642 symtab_i->Value,
3643 (Int32)(symtab_i->SectionNumber),
3644 (UInt32)symtab_i->Type,
3645 (UInt32)symtab_i->StorageClass,
3646 (UInt32)symtab_i->NumberOfAuxSymbols
3647 );
3648 i += symtab_i->NumberOfAuxSymbols;
3649 i++;
3650 }
3651
3652 debugBelch("\n" );
3653 return 1;
3654 }
3655
3656
3657 static int
3658 ocGetNames_PEi386 ( ObjectCode* oc )
3659 {
3660 COFF_header* hdr;
3661 COFF_section* sectab;
3662 COFF_symbol* symtab;
3663 UChar* strtab;
3664
3665 UChar* sname;
3666 void* addr;
3667 int i;
3668
3669 hdr = (COFF_header*)(oc->image);
3670 sectab = (COFF_section*) (
3671 ((UChar*)(oc->image))
3672 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3673 );
3674 symtab = (COFF_symbol*) (
3675 ((UChar*)(oc->image))
3676 + hdr->PointerToSymbolTable
3677 );
3678 strtab = ((UChar*)(oc->image))
3679 + hdr->PointerToSymbolTable
3680 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3681
3682 /* Allocate space for any (local, anonymous) .bss sections. */
3683
3684 for (i = 0; i < hdr->NumberOfSections; i++) {
3685 UInt32 bss_sz;
3686 UChar* zspace;
3687 COFF_section* sectab_i
3688 = (COFF_section*)
3689 myindex ( sizeof_COFF_section, sectab, i );
3690
3691 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3692
3693 if (0 != strcmp(secname, ".bss")) {
3694 stgFree(secname);
3695 continue;
3696 }
3697
3698 stgFree(secname);
3699
3700 /* sof 10/05: the PE spec text isn't too clear regarding what
3701 * the SizeOfRawData field is supposed to hold for object
3702 * file sections containing just uninitialized data -- for executables,
3703 * it is supposed to be zero; unclear what it's supposed to be
3704 * for object files. However, VirtualSize is guaranteed to be
3705 * zero for object files, which definitely suggests that SizeOfRawData
3706 * will be non-zero (where else would the size of this .bss section be
3707 * stored?) Looking at the COFF_section info for incoming object files,
3708 * this certainly appears to be the case.
3709 *
3710 * => I suspect we've been incorrectly handling .bss sections in (relocatable)
3711 * object files up until now. This turned out to bite us with ghc-6.4.1's use
3712 * of gcc-3.4.x, which has started to emit initially-zeroed-out local 'static'
3713 * variable decls into to the .bss section. (The specific function in Q which
3714 * triggered this is libraries/base/cbits/dirUtils.c:__hscore_getFolderPath())
3715 */
3716 if (sectab_i->VirtualSize == 0 && sectab_i->SizeOfRawData == 0) continue;
3717 /* This is a non-empty .bss section. Allocate zeroed space for
3718 it, and set its PointerToRawData field such that oc->image +
3719 PointerToRawData == addr_of_zeroed_space. */
3720 bss_sz = sectab_i->VirtualSize;
3721 if ( bss_sz < sectab_i->SizeOfRawData) { bss_sz = sectab_i->SizeOfRawData; }
3722 zspace = stgCallocBytes(1, bss_sz, "ocGetNames_PEi386(anonymous bss)");
3723 sectab_i->PointerToRawData = ((UChar*)zspace) - ((UChar*)(oc->image));
3724 addProddableBlock(oc, zspace, bss_sz);
3725 /* debugBelch("BSS anon section at 0x%x\n", zspace); */
3726 }
3727
3728 /* Copy section information into the ObjectCode. */
3729
3730 for (i = 0; i < hdr->NumberOfSections; i++) {
3731 UChar* start;
3732 UChar* end;
3733 UInt32 sz;
3734
3735 SectionKind kind
3736 = SECTIONKIND_OTHER;
3737 COFF_section* sectab_i
3738 = (COFF_section*)
3739 myindex ( sizeof_COFF_section, sectab, i );
3740
3741 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3742
3743 IF_DEBUG(linker, debugBelch("section name = %s\n", secname ));
3744
3745 # if 0
3746 /* I'm sure this is the Right Way to do it. However, the
3747 alternative of testing the sectab_i->Name field seems to
3748 work ok with Cygwin.
3749 */
3750 if (sectab_i->Characteristics & MYIMAGE_SCN_CNT_CODE ||
3751 sectab_i->Characteristics & MYIMAGE_SCN_CNT_INITIALIZED_DATA)
3752 kind = SECTIONKIND_CODE_OR_RODATA;
3753 # endif
3754
3755 if (0==strcmp(".text",(char*)secname) ||
3756 0==strcmp(".text.startup",(char*)secname) ||
3757 0==strcmp(".rdata",(char*)secname)||
3758 0==strcmp(".rodata",(char*)secname))
3759 kind = SECTIONKIND_CODE_OR_RODATA;
3760 if (0==strcmp(".data",(char*)secname) ||
3761 0==strcmp(".bss",(char*)secname))
3762 kind = SECTIONKIND_RWDATA;
3763
3764 ASSERT(sectab_i->SizeOfRawData == 0 || sectab_i->VirtualSize == 0);
3765 sz = sectab_i->SizeOfRawData;
3766 if (sz < sectab_i->VirtualSize) sz = sectab_i->VirtualSize;
3767
3768 start = ((UChar*)(oc->image)) + sectab_i->PointerToRawData;
3769 end = start + sz - 1;
3770
3771 if (kind == SECTIONKIND_OTHER
3772 /* Ignore sections called which contain stabs debugging
3773 information. */
3774 && 0 != strcmp(".stab", (char*)secname)
3775 && 0 != strcmp(".stabstr", (char*)secname)
3776 /* Ignore sections called which contain exception information. */
3777 && 0 != strcmp(".pdata", (char*)secname)
3778 && 0 != strcmp(".xdata", (char*)secname)
3779 /* ignore constructor section for now */
3780 && 0 != strcmp(".ctors", (char*)secname)
3781 /* ignore section generated from .ident */
3782 && 0!= strncmp(".debug", (char*)secname, 6)
3783 /* ignore unknown section that appeared in gcc 3.4.5(?) */
3784 && 0!= strcmp(".reloc", (char*)secname)
3785 && 0 != strcmp(".rdata$zzz", (char*)secname)
3786 ) {
3787 errorBelch("Unknown PEi386 section name `%s' (while processing: %" PATH_FMT")", secname, oc->fileName);
3788 stgFree(secname);
3789 return 0;
3790 }
3791
3792 if (kind != SECTIONKIND_OTHER && end >= start) {
3793 if ((((size_t)(start)) % sizeof(void *)) != 0) {
3794 barf("Misaligned section: %p", start);
3795 }
3796
3797 addSection(oc, kind, start, end);
3798 addProddableBlock(oc, start, end - start + 1);
3799 }
3800
3801 stgFree(secname);
3802 }
3803
3804 /* Copy exported symbols into the ObjectCode. */
3805
3806 oc->n_symbols = hdr->NumberOfSymbols;
3807 oc->symbols = stgMallocBytes(oc->n_symbols * sizeof(char*),
3808 "ocGetNames_PEi386(oc->symbols)");
3809 /* Call me paranoid; I don't care. */
3810 for (i = 0; i < oc->n_symbols; i++)
3811 oc->symbols[i] = NULL;
3812
3813 i = 0;
3814 while (1) {
3815 COFF_symbol* symtab_i;
3816 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
3817 symtab_i = (COFF_symbol*)
3818 myindex ( sizeof_COFF_symbol, symtab, i );
3819
3820 addr = NULL;
3821
3822 if (symtab_i->StorageClass == MYIMAGE_SYM_CLASS_EXTERNAL
3823 && symtab_i->SectionNumber != MYIMAGE_SYM_UNDEFINED) {
3824 /* This symbol is global and defined, viz, exported */
3825 /* for MYIMAGE_SYMCLASS_EXTERNAL
3826 && !MYIMAGE_SYM_UNDEFINED,
3827 the address of the symbol is:
3828 address of relevant section + offset in section
3829 */
3830 COFF_section* sectabent
3831 = (COFF_section*) myindex ( sizeof_COFF_section,
3832 sectab,
3833 symtab_i->SectionNumber-1 );
3834 addr = ((UChar*)(oc->image))
3835 + (sectabent->PointerToRawData
3836 + symtab_i->Value);
3837 }
3838 else
3839 if (symtab_i->SectionNumber == MYIMAGE_SYM_UNDEFINED
3840 && symtab_i->Value > 0) {
3841 /* This symbol isn't in any section at all, ie, global bss.
3842 Allocate zeroed space for it. */
3843 addr = stgCallocBytes(1, symtab_i->Value,
3844 "ocGetNames_PEi386(non-anonymous bss)");
3845 addSection(oc, SECTIONKIND_RWDATA, addr,
3846 ((UChar*)addr) + symtab_i->Value - 1);
3847 addProddableBlock(oc, addr, symtab_i->Value);
3848 /* debugBelch("BSS section at 0x%x\n", addr); */
3849 }
3850
3851 if (addr != NULL ) {
3852 sname = cstring_from_COFF_symbol_name ( symtab_i->Name, strtab );
3853 /* debugBelch("addSymbol %p `%s \n", addr,sname); */
3854 IF_DEBUG(linker, debugBelch("addSymbol %p `%s'\n", addr,sname);)
3855 ASSERT(i >= 0 && i < oc->n_symbols);
3856 /* cstring_from_COFF_symbol_name always succeeds. */
3857 oc->symbols[i] = (char*)sname;
3858 ghciInsertStrHashTable(oc->fileName, symhash, (char*)sname, addr);
3859 } else {
3860 # if 0
3861 debugBelch(
3862 "IGNORING symbol %d\n"
3863 " name `",
3864 i
3865 );
3866 printName ( symtab_i->Name, strtab );
3867 debugBelch(
3868 "'\n"
3869 " value 0x%x\n"
3870 " 1+sec# %d\n"
3871 " type 0x%x\n"
3872 " sclass 0x%x\n"
3873 " nAux %d\n",
3874 symtab_i->Value,
3875 (Int32)(symtab_i->SectionNumber),
3876 (UInt32)symtab_i->Type,
3877 (UInt32)symtab_i->StorageClass,
3878 (UInt32)symtab_i->NumberOfAuxSymbols
3879 );
3880 # endif
3881 }
3882
3883 i += symtab_i->NumberOfAuxSymbols;
3884 i++;
3885 }
3886
3887 return 1;
3888 }
3889
3890
3891 static int
3892 ocResolve_PEi386 ( ObjectCode* oc )
3893 {
3894 COFF_header* hdr;
3895 COFF_section* sectab;
3896 COFF_symbol* symtab;
3897 UChar* strtab;
3898
3899 UInt32 A;
3900 size_t S;
3901 void * pP;
3902
3903 int i;
3904 UInt32 j, noRelocs;
3905
3906 /* ToDo: should be variable-sized? But is at least safe in the
3907 sense of buffer-overrun-proof. */
3908 UChar symbol[1000];
3909 /* debugBelch("resolving for %s\n", oc->fileName); */
3910
3911 hdr = (COFF_header*)(oc->image);
3912 sectab = (COFF_section*) (
3913 ((UChar*)(oc->image))
3914 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3915 );
3916 symtab = (COFF_symbol*) (
3917 ((UChar*)(oc->image))
3918 + hdr->PointerToSymbolTable
3919 );
3920 strtab = ((UChar*)(oc->image))
3921 + hdr->PointerToSymbolTable
3922 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3923
3924 for (i = 0; i < hdr->NumberOfSections; i++) {
3925 COFF_section* sectab_i
3926 = (COFF_section*)
3927 myindex ( sizeof_COFF_section, sectab, i );
3928 COFF_reloc* reltab
3929 = (COFF_reloc*) (
3930 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
3931 );
3932
3933 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3934
3935 /* Ignore sections called which contain stabs debugging
3936 information. */
3937 if (0 == strcmp(".stab", (char*)secname)
3938 || 0 == strcmp(".stabstr", (char*)secname)
3939 || 0 == strcmp(".pdata", (char*)secname)
3940 || 0 == strcmp(".xdata", (char*)secname)
3941 || 0 == strcmp(".ctors", (char*)secname)
3942 || 0 == strncmp(".debug", (char*)secname, 6)
3943 || 0 == strcmp(".rdata$zzz", (char*)secname)) {
3944 stgFree(secname);
3945 continue;
3946 }
3947
3948 stgFree(secname);
3949
3950 if ( sectab_i->Characteristics & MYIMAGE_SCN_LNK_NRELOC_OVFL ) {
3951 /* If the relocation field (a short) has overflowed, the
3952 * real count can be found in the first reloc entry.
3953 *
3954 * See Section 4.1 (last para) of the PE spec (rev6.0).
3955 *
3956 * Nov2003 update: the GNU linker still doesn't correctly
3957 * handle the generation of relocatable object files with
3958 * overflown relocations. Hence the output to warn of potential
3959 * troubles.
3960 */
3961 COFF_reloc* rel = (COFF_reloc*)
3962 myindex ( sizeof_COFF_reloc, reltab, 0 );
3963 noRelocs = rel->VirtualAddress;
3964
3965 /* 10/05: we now assume (and check for) a GNU ld that is capable
3966 * of handling object files with (>2^16) of relocs.
3967 */
3968 #if 0
3969 debugBelch("WARNING: Overflown relocation field (# relocs found: %u)\n",
3970 noRelocs);
3971 #endif
3972 j = 1;
3973 } else {
3974 noRelocs = sectab_i->NumberOfRelocations;
3975 j = 0;
3976 }
3977
3978 for (; j < noRelocs; j++) {
3979 COFF_symbol* sym;
3980 COFF_reloc* reltab_j
3981 = (COFF_reloc*)
3982 myindex ( sizeof_COFF_reloc, reltab, j );
3983
3984 /* the location to patch */
3985 pP = (
3986 ((UChar*)(oc->image))
3987 + (sectab_i->PointerToRawData
3988 + reltab_j->VirtualAddress
3989 - sectab_i->VirtualAddress )
3990 );
3991 /* the existing contents of pP */
3992 A = *(UInt32*)pP;
3993 /* the symbol to connect to */
3994 sym = (COFF_symbol*)
3995 myindex ( sizeof_COFF_symbol,
3996 symtab, reltab_j->SymbolTableIndex );
3997 IF_DEBUG(linker,
3998 debugBelch(
3999 "reloc sec %2d num %3d: type 0x%-4x "
4000 "vaddr 0x%-8x name `",
4001 i, j,
4002 (UInt32)reltab_j->Type,
4003 reltab_j->VirtualAddress );
4004 printName ( sym->Name, strtab );
4005 debugBelch("'\n" ));
4006
4007 if (sym->StorageClass == MYIMAGE_SYM_CLASS_STATIC) {
4008 COFF_section* section_sym
4009 = findPEi386SectionCalled ( oc, sym->Name );
4010 if (!section_sym) {
4011 errorBelch("%" PATH_FMT ": can't find section `%s'", oc->fileName, sym->Name);
4012 return 0;
4013 }
4014