Linker.c 219 KB
Newer Older
1
2
/* -----------------------------------------------------------------------------
 *
3
 * (c) The GHC Team, 2000-2004
4
5
6
7
8
 *
 * RTS Object Linker
 *
 * ---------------------------------------------------------------------------*/

sof's avatar
sof committed
9
#if 0
10
#include "PosixSource.h"
sof's avatar
sof committed
11
#endif
12

13
/* Linux needs _GNU_SOURCE to get RTLD_DEFAULT from <dlfcn.h> and
14
15
   MREMAP_MAYMOVE from <sys/mman.h>.
 */
16
17
#if defined(__linux__)  || defined(__GLIBC__)
#define _GNU_SOURCE 1
18
19
#endif

20
21
#include "Rts.h"
#include "HsFFI.h"
Simon Marlow's avatar
Simon Marlow committed
22
23

#include "sm/Storage.h"
Simon Marlow's avatar
Simon Marlow committed
24
#include "Stats.h"
25
#include "Hash.h"
26
#include "LinkerInternals.h"
27
#include "RtsUtils.h"
28
#include "Trace.h"
Simon Marlow's avatar
Simon Marlow committed
29
30
31
32
33
34
#include "StgPrimFloat.h" // for __int_encodeFloat etc.
#include "Stable.h"

#if !defined(mingw32_HOST_OS)
#include "posix/Signals.h"
#endif
35

Simon Marlow's avatar
Simon Marlow committed
36
37
38
// get protos for is*()
#include <ctype.h>

39
#ifdef HAVE_SYS_TYPES_H
40
#include <sys/types.h>
41
42
#endif

Ian Lynagh's avatar
Ian Lynagh committed
43
#include <inttypes.h>
44
45
#include <stdlib.h>
#include <string.h>
46
47
#include <stdio.h>
#include <assert.h>
48

49
#ifdef HAVE_SYS_STAT_H
50
#include <sys/stat.h>
51
#endif
52

53
#if defined(HAVE_DLFCN_H)
54
#include <dlfcn.h>
55
#endif
56

57
#if defined(cygwin32_HOST_OS)
sof's avatar
sof committed
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
#ifdef HAVE_DIRENT_H
#include <dirent.h>
#endif

#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <regex.h>
#include <sys/fcntl.h>
#include <sys/termios.h>
#include <sys/utime.h>
#include <sys/utsname.h>
#include <sys/wait.h>
#endif

73
74
75
76
77
78
#if !defined(powerpc_HOST_ARCH) && \
    (   defined(linux_HOST_OS    ) || defined(freebsd_HOST_OS) || \
        defined(dragonfly_HOST_OS) || defined(netbsd_HOST_OS ) || \
        defined(openbsd_HOST_OS  ) || defined(darwin_HOST_OS ) || \
        defined(kfreebsdgnu_HOST_OS) )
/* Don't use mmap on powerpc_HOST_ARCH as mmap doesn't support
79
80
81
82
 * reallocating but we need to allocate jump islands just after each
 * object images. Otherwise relative branches to jump islands can fail
 * due to 24-bits displacement overflow.
 */
83
84
85
#define USE_MMAP
#include <fcntl.h>
#include <sys/mman.h>
dons's avatar
dons committed
86
87
88
89
90

#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

91
92
#endif

93
#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)
94
#  define OBJFORMAT_ELF
Ian Lynagh's avatar
Ian Lynagh committed
95
96
#  include <regex.h>    // regex is already used by dlopen() so this is OK
                        // to use here without requiring an additional lib
97
#elif defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
98
#  define OBJFORMAT_PEi386
99
#  include <windows.h>
sof's avatar
sof committed
100
#  include <math.h>
101
#elif defined(darwin_HOST_OS)
102
#  define OBJFORMAT_MACHO
103
#  include <regex.h>
Ian Lynagh's avatar
Ian Lynagh committed
104
105
#  include <mach/machine.h>
#  include <mach-o/fat.h>
106
107
108
#  include <mach-o/loader.h>
#  include <mach-o/nlist.h>
#  include <mach-o/reloc.h>
109
#if !defined(HAVE_DLFCN_H)
110
#  include <mach-o/dyld.h>
111
#endif
112
113
114
#if defined(powerpc_HOST_ARCH)
#  include <mach-o/ppc/reloc.h>
#endif
115
116
117
#if defined(x86_64_HOST_ARCH)
#  include <mach-o/x86_64/reloc.h>
#endif
118
119
#endif

120
121
122
123
#if defined(x86_64_HOST_ARCH) && defined(darwin_HOST_OS)
#define ALWAYS_PIC
#endif

124
/* Hash table mapping symbol names to Symbol */
125
static /*Str*/HashTable *symhash;
126

127
128
129
/* Hash table mapping symbol names to StgStablePtr */
static /*Str*/HashTable *stablehash;

130
/* List of currently loaded objects */
Ian Lynagh's avatar
Ian Lynagh committed
131
ObjectCode *objects = NULL;     /* initially empty */
132

133
static HsInt loadOc( ObjectCode* oc );
134
static ObjectCode* mkOc( pathchar *path, char *image, int imageSize,
135
                         char *archiveMemberName
136
137
138
139
140
141
142
#ifndef USE_MMAP
#ifdef darwin_HOST_OS
                       , int misalignment
#endif
#endif
                       );

143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
// Use wchar_t for pathnames on Windows (#5697)
#if defined(mingw32_HOST_OS)
#define pathcmp wcscmp
#define pathlen wcslen
#define pathopen _wfopen
#define pathstat _wstat
#define struct_stat struct _stat
#define open wopen
#define WSTR(s) L##s
#define PATH_FMT "S"
#else
#define pathcmp strcmp
#define pathlen strlen
#define pathopen fopen
#define pathstat stat
#define struct_stat struct stat
#define WSTR(s) s
#define PATH_FMT "s"
#endif

static pathchar* pathdup(pathchar *path)
{
    pathchar *ret;
#if defined(mingw32_HOST_OS)
    ret = wcsdup(path);
#else
    /* sigh, strdup() isn't a POSIX function, so do it the long way */
    ret = stgMallocBytes( strlen(path)+1, "loadObj" );
    strcpy(ret, path);
#endif
    return ret;
}


177
#if defined(OBJFORMAT_ELF)
178
179
180
static int ocVerifyImage_ELF    ( ObjectCode* oc );
static int ocGetNames_ELF       ( ObjectCode* oc );
static int ocResolve_ELF        ( ObjectCode* oc );
Ben Gamari's avatar
Ben Gamari committed
181
#if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
182
static int ocAllocateSymbolExtras_ELF ( ObjectCode* oc );
183
#endif
184
#elif defined(OBJFORMAT_PEi386)
185
186
187
static int ocVerifyImage_PEi386 ( ObjectCode* oc );
static int ocGetNames_PEi386    ( ObjectCode* oc );
static int ocResolve_PEi386     ( ObjectCode* oc );
188
189
static void *lookupSymbolInDLLs ( unsigned char *lbl );
static void zapTrailingAtSign   ( unsigned char *sym );
190
191
192
193
#elif defined(OBJFORMAT_MACHO)
static int ocVerifyImage_MachO    ( ObjectCode* oc );
static int ocGetNames_MachO       ( ObjectCode* oc );
static int ocResolve_MachO        ( ObjectCode* oc );
194

Ian Lynagh's avatar
Ian Lynagh committed
195
#ifndef USE_MMAP
196
static int machoGetMisalignment( FILE * );
Ian Lynagh's avatar
Ian Lynagh committed
197
#endif
198
199
200
#if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
static int ocAllocateSymbolExtras_MachO ( ObjectCode* oc );
#endif
201
#ifdef powerpc_HOST_ARCH
202
static void machoInitSymbolsWithoutUnderscore( void );
203
#endif
204
#endif
205

206
207
208
209
210
211
212
213
214
215
216
217
218
/* on x86_64 we have a problem with relocating symbol references in
 * code that was compiled without -fPIC.  By default, the small memory
 * model is used, which assumes that symbol references can fit in a
 * 32-bit slot.  The system dynamic linker makes this work for
 * references to shared libraries by either (a) allocating a jump
 * table slot for code references, or (b) moving the symbol at load
 * time (and copying its contents, if necessary) for data references.
 *
 * We unfortunately can't tell whether symbol references are to code
 * or data.  So for now we assume they are code (the vast majority
 * are), and allocate jump-table slots.  Unfortunately this will
 * SILENTLY generate crashing code for data references.  This hack is
 * enabled by X86_64_ELF_NONPIC_HACK.
Ian Lynagh's avatar
Ian Lynagh committed
219
 *
220
221
222
223
224
225
226
227
 * One workaround is to use shared Haskell libraries.  This is
 * coming.  Another workaround is to keep the static libraries but
 * compile them with -fPIC, because that will generate PIC references
 * to data which can be relocated.  The PIC code is still too green to
 * do this systematically, though.
 *
 * See bug #781
 * See thread http://www.haskell.org/pipermail/cvs-ghc/2007-September/038458.html
228
229
230
231
232
233
234
235
236
237
238
239
 *
 * Naming Scheme for Symbol Macros
 *
 * SymI_*: symbol is internal to the RTS. It resides in an object
 *         file/library that is statically.
 * SymE_*: symbol is external to the RTS library. It might be linked
 *         dynamically.
 *
 * Sym*_HasProto  : the symbol prototype is imported in an include file
 *                  or defined explicitly
 * Sym*_NeedsProto: the symbol is undefined and we add a dummy
 *                  default proto extern void sym(void);
240
241
 */
#define X86_64_ELF_NONPIC_HACK 1
242

243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
/* Link objects into the lower 2Gb on x86_64.  GHC assumes the
 * small memory model on this architecture (see gcc docs,
 * -mcmodel=small).
 *
 * MAP_32BIT not available on OpenBSD/amd64
 */
#if defined(x86_64_HOST_ARCH) && defined(MAP_32BIT)
#define TRY_MAP_32BIT MAP_32BIT
#else
#define TRY_MAP_32BIT 0
#endif

/*
 * Due to the small memory model (see above), on x86_64 we have to map
 * all our non-PIC object files into the low 2Gb of the address space
 * (why 2Gb and not 4Gb?  Because all addresses must be reachable
 * using a 32-bit signed PC-relative offset). On Linux we can do this
 * using the MAP_32BIT flag to mmap(), however on other OSs
 * (e.g. *BSD, see #2063, and also on Linux inside Xen, see #2512), we
 * can't do this.  So on these systems, we have to pick a base address
 * in the low 2Gb of the address space and try to allocate memory from
 * there.
 *
 * We pick a default address based on the OS, but also make this
 * configurable via an RTS flag (+RTS -xm)
 */
269
#if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
270
271
272
273
274
275
276
277
278

#if defined(MAP_32BIT)
// Try to use MAP_32BIT
#define MMAP_32BIT_BASE_DEFAULT 0
#else
// A guess: 1Gb.
#define MMAP_32BIT_BASE_DEFAULT 0x40000000
#endif

Ian Lynagh's avatar
Ian Lynagh committed
279
static void *mmap_32bit_base = (void *)MMAP_32BIT_BASE_DEFAULT;
280
281
282
283
284
285
286
#endif

/* MAP_ANONYMOUS is MAP_ANON on some systems, e.g. OpenBSD */
#if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
#define MAP_ANONYMOUS MAP_ANON
#endif

287
288
289
290
/* -----------------------------------------------------------------------------
 * Built-in symbols from the RTS
 */

291
292
293
294
295
typedef struct _RtsSymbolVal {
    char   *lbl;
    void   *addr;
} RtsSymbolVal;

Ian Lynagh's avatar
Ian Lynagh committed
296
#define Maybe_Stable_Names      SymI_HasProto(stg_mkWeakzh)                     \
297
                                SymI_HasProto(stg_mkWeakNoFinalizzerzh)         \
Ian Lynagh's avatar
Ian Lynagh committed
298
299
300
                                SymI_HasProto(stg_mkWeakForeignEnvzh)           \
                                SymI_HasProto(stg_makeStableNamezh)             \
                                SymI_HasProto(stg_finalizzeWeakzh)
301

302
#if !defined (mingw32_HOST_OS)
303
#define RTS_POSIX_ONLY_SYMBOLS                  \
Ian Lynagh's avatar
Ian Lynagh committed
304
305
306
      SymI_HasProto(__hscore_get_saved_termios) \
      SymI_HasProto(__hscore_set_saved_termios) \
      SymI_HasProto(shutdownHaskellAndSignal)   \
Simon Marlow's avatar
Simon Marlow committed
307
308
      SymI_HasProto(lockFile)                   \
      SymI_HasProto(unlockFile)                 \
Ian Lynagh's avatar
Ian Lynagh committed
309
310
      SymI_HasProto(signal_handlers)            \
      SymI_HasProto(stg_sig_install)            \
311
      SymI_HasProto(rtsTimerSignal)             \
Simon Marlow's avatar
Simon Marlow committed
312
      SymI_HasProto(atexit)                     \
313
      SymI_NeedsProto(nocldstop)
sof's avatar
sof committed
314
#endif
315

316
#if defined (cygwin32_HOST_OS)
sof's avatar
sof committed
317
318
319
#define RTS_MINGW_ONLY_SYMBOLS /**/
/* Don't have the ability to read import libs / archives, so
 * we have to stupidly list a lot of what libcygwin.a
320
 * exports; sigh.
sof's avatar
sof committed
321
 */
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
#define RTS_CYGWIN_ONLY_SYMBOLS                          \
      SymI_HasProto(regfree)                             \
      SymI_HasProto(regexec)                             \
      SymI_HasProto(regerror)                            \
      SymI_HasProto(regcomp)                             \
      SymI_HasProto(__errno)                             \
      SymI_HasProto(access)                              \
      SymI_HasProto(chmod)                               \
      SymI_HasProto(chdir)                               \
      SymI_HasProto(close)                               \
      SymI_HasProto(creat)                               \
      SymI_HasProto(dup)                                 \
      SymI_HasProto(dup2)                                \
      SymI_HasProto(fstat)                               \
      SymI_HasProto(fcntl)                               \
      SymI_HasProto(getcwd)                              \
      SymI_HasProto(getenv)                              \
      SymI_HasProto(lseek)                               \
      SymI_HasProto(open)                                \
      SymI_HasProto(fpathconf)                           \
      SymI_HasProto(pathconf)                            \
      SymI_HasProto(stat)                                \
      SymI_HasProto(pow)                                 \
      SymI_HasProto(tanh)                                \
      SymI_HasProto(cosh)                                \
      SymI_HasProto(sinh)                                \
      SymI_HasProto(atan)                                \
      SymI_HasProto(acos)                                \
      SymI_HasProto(asin)                                \
      SymI_HasProto(tan)                                 \
      SymI_HasProto(cos)                                 \
      SymI_HasProto(sin)                                 \
      SymI_HasProto(exp)                                 \
      SymI_HasProto(log)                                 \
      SymI_HasProto(sqrt)                                \
      SymI_HasProto(localtime_r)                         \
      SymI_HasProto(gmtime_r)                            \
      SymI_HasProto(mktime)                              \
      SymI_NeedsProto(_imp___tzname)                     \
      SymI_HasProto(gettimeofday)                        \
      SymI_HasProto(timezone)                            \
      SymI_HasProto(tcgetattr)                           \
      SymI_HasProto(tcsetattr)                           \
      SymI_HasProto(memcpy)                              \
      SymI_HasProto(memmove)                             \
      SymI_HasProto(realloc)                             \
      SymI_HasProto(malloc)                              \
      SymI_HasProto(free)                                \
      SymI_HasProto(fork)                                \
      SymI_HasProto(lstat)                               \
      SymI_HasProto(isatty)                              \
      SymI_HasProto(mkdir)                               \
      SymI_HasProto(opendir)                             \
      SymI_HasProto(readdir)                             \
      SymI_HasProto(rewinddir)                           \
      SymI_HasProto(closedir)                            \
      SymI_HasProto(link)                                \
      SymI_HasProto(mkfifo)                              \
      SymI_HasProto(pipe)                                \
      SymI_HasProto(read)                                \
      SymI_HasProto(rename)                              \
      SymI_HasProto(rmdir)                               \
      SymI_HasProto(select)                              \
      SymI_HasProto(system)                              \
      SymI_HasProto(write)                               \
      SymI_HasProto(strcmp)                              \
      SymI_HasProto(strcpy)                              \
      SymI_HasProto(strncpy)                             \
      SymI_HasProto(strerror)                            \
      SymI_HasProto(sigaddset)                           \
      SymI_HasProto(sigemptyset)                         \
      SymI_HasProto(sigprocmask)                         \
      SymI_HasProto(umask)                               \
      SymI_HasProto(uname)                               \
      SymI_HasProto(unlink)                              \
      SymI_HasProto(utime)                               \
      SymI_HasProto(waitpid)
399

Ian Lynagh's avatar
Ian Lynagh committed
400
#elif defined(mingw32_HOST_OS)
sof's avatar
sof committed
401
402
#define RTS_POSIX_ONLY_SYMBOLS  /**/
#define RTS_CYGWIN_ONLY_SYMBOLS /**/
403

404
#if HAVE_GETTIMEOFDAY
405
#define RTS_MINGW_GETTIMEOFDAY_SYM SymI_NeedsProto(gettimeofday)
406
407
408
409
#else
#define RTS_MINGW_GETTIMEOFDAY_SYM /**/
#endif

410
411
412
413
414
415
#if HAVE___MINGW_VFPRINTF
#define RTS___MINGW_VFPRINTF_SYM SymI_HasProto(__mingw_vfprintf)
#else
#define RTS___MINGW_VFPRINTF_SYM /**/
#endif

Ian Lynagh's avatar
Ian Lynagh committed
416
#if defined(i386_HOST_ARCH)
417
#define RTS_WIN32_ONLY(X) X
Ian Lynagh's avatar
Ian Lynagh committed
418
#else
419
420
421
422
423
424
425
#define RTS_WIN32_ONLY(X) /**/
#endif

#if defined(x86_64_HOST_ARCH)
#define RTS_WIN64_ONLY(X) X
#else
#define RTS_WIN64_ONLY(X) /**/
Ian Lynagh's avatar
Ian Lynagh committed
426
427
#endif

428
429
/* These are statically linked from the mingw libraries into the ghc
   executable, so we have to employ this hack. */
430
#define RTS_MINGW_ONLY_SYMBOLS                           \
Ian Lynagh's avatar
Ian Lynagh committed
431
432
433
      SymI_HasProto(stg_asyncReadzh)                     \
      SymI_HasProto(stg_asyncWritezh)                    \
      SymI_HasProto(stg_asyncDoProczh)                   \
434
435
      SymI_HasProto(getWin32ProgArgv)                    \
      SymI_HasProto(setWin32ProgArgv)                    \
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
      SymI_HasProto(memset)                              \
      SymI_HasProto(inet_ntoa)                           \
      SymI_HasProto(inet_addr)                           \
      SymI_HasProto(htonl)                               \
      SymI_HasProto(recvfrom)                            \
      SymI_HasProto(listen)                              \
      SymI_HasProto(bind)                                \
      SymI_HasProto(shutdown)                            \
      SymI_HasProto(connect)                             \
      SymI_HasProto(htons)                               \
      SymI_HasProto(ntohs)                               \
      SymI_HasProto(getservbyname)                       \
      SymI_HasProto(getservbyport)                       \
      SymI_HasProto(getprotobynumber)                    \
      SymI_HasProto(getprotobyname)                      \
      SymI_HasProto(gethostbyname)                       \
      SymI_HasProto(gethostbyaddr)                       \
      SymI_HasProto(gethostname)                         \
      SymI_HasProto(strcpy)                              \
      SymI_HasProto(strncpy)                             \
      SymI_HasProto(abort)                               \
457
      RTS_WIN32_ONLY(SymI_NeedsProto(_alloca))           \
Ian Lynagh's avatar
Ian Lynagh committed
458
459
460
461
462
463
464
465
466
467
468
      SymI_HasProto(isxdigit)                            \
      SymI_HasProto(isupper)                             \
      SymI_HasProto(ispunct)                             \
      SymI_HasProto(islower)                             \
      SymI_HasProto(isspace)                             \
      SymI_HasProto(isprint)                             \
      SymI_HasProto(isdigit)                             \
      SymI_HasProto(iscntrl)                             \
      SymI_HasProto(isalpha)                             \
      SymI_HasProto(isalnum)                             \
      SymI_HasProto(isascii)                             \
469
      RTS___MINGW_VFPRINTF_SYM                           \
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
      SymI_HasProto(strcmp)                              \
      SymI_HasProto(memmove)                             \
      SymI_HasProto(realloc)                             \
      SymI_HasProto(malloc)                              \
      SymI_HasProto(pow)                                 \
      SymI_HasProto(tanh)                                \
      SymI_HasProto(cosh)                                \
      SymI_HasProto(sinh)                                \
      SymI_HasProto(atan)                                \
      SymI_HasProto(acos)                                \
      SymI_HasProto(asin)                                \
      SymI_HasProto(tan)                                 \
      SymI_HasProto(cos)                                 \
      SymI_HasProto(sin)                                 \
      SymI_HasProto(exp)                                 \
      SymI_HasProto(log)                                 \
      SymI_HasProto(sqrt)                                \
      SymI_HasProto(powf)                                \
      SymI_HasProto(tanhf)                               \
      SymI_HasProto(coshf)                               \
      SymI_HasProto(sinhf)                               \
      SymI_HasProto(atanf)                               \
      SymI_HasProto(acosf)                               \
      SymI_HasProto(asinf)                               \
      SymI_HasProto(tanf)                                \
      SymI_HasProto(cosf)                                \
      SymI_HasProto(sinf)                                \
      SymI_HasProto(expf)                                \
      SymI_HasProto(logf)                                \
      SymI_HasProto(sqrtf)                               \
Ian Lynagh's avatar
Ian Lynagh committed
500
      SymI_HasProto(erf)                                 \
501
502
503
      SymI_HasProto(erfc)                                \
      SymI_HasProto(erff)                                \
      SymI_HasProto(erfcf)                               \
504
505
506
507
      SymI_HasProto(memcpy)                              \
      SymI_HasProto(rts_InstallConsoleEvent)             \
      SymI_HasProto(rts_ConsoleHandlerDone)              \
      SymI_NeedsProto(mktime)                            \
508
509
510
511
512
      RTS_WIN32_ONLY(SymI_NeedsProto(_imp___timezone))   \
      RTS_WIN32_ONLY(SymI_NeedsProto(_imp___tzname))     \
      RTS_WIN32_ONLY(SymI_NeedsProto(_imp__tzname))      \
      RTS_WIN32_ONLY(SymI_NeedsProto(_imp___iob))        \
      RTS_WIN32_ONLY(SymI_NeedsProto(_imp___osver))      \
513
514
515
516
517
      SymI_NeedsProto(localtime)                         \
      SymI_NeedsProto(gmtime)                            \
      SymI_NeedsProto(opendir)                           \
      SymI_NeedsProto(readdir)                           \
      SymI_NeedsProto(rewinddir)                         \
518
519
520
      RTS_WIN32_ONLY(SymI_NeedsProto(_imp____mb_cur_max)) \
      RTS_WIN32_ONLY(SymI_NeedsProto(_imp___pctype))     \
      RTS_WIN32_ONLY(SymI_NeedsProto(__chkstk))          \
521
522
523
524
525
526
      SymI_NeedsProto(__imp___iob_func)                  \
      SymI_NeedsProto(___chkstk_ms)                      \
      SymI_NeedsProto(__imp_localeconv)                  \
      SymI_NeedsProto(__imp_islower)                     \
      SymI_NeedsProto(__imp_isspace)                     \
      SymI_NeedsProto(__imp_isxdigit)                    \
527
528
529
530
531
      RTS_WIN64_ONLY(SymI_HasProto(close))               \
      RTS_WIN64_ONLY(SymI_HasProto(read))                \
      RTS_WIN64_ONLY(SymI_HasProto(dup))                 \
      RTS_WIN64_ONLY(SymI_HasProto(dup2))                \
      RTS_WIN64_ONLY(SymI_HasProto(write))               \
Ian Lynagh's avatar
Ian Lynagh committed
532
      SymI_NeedsProto(getpid)                            \
533
      RTS_WIN64_ONLY(SymI_HasProto(access))              \
Ian Lynagh's avatar
Ian Lynagh committed
534
      SymI_HasProto(chmod)                               \
535
536
      RTS_WIN64_ONLY(SymI_HasProto(creat))               \
      RTS_WIN64_ONLY(SymI_HasProto(umask))               \
Ian Lynagh's avatar
Ian Lynagh committed
537
      SymI_HasProto(unlink)                              \
538
539
      SymI_NeedsProto(__imp__errno)                      \
      SymI_NeedsProto(ftruncate64)                       \
540
      RTS_WIN64_ONLY(SymI_HasProto(setmode))             \
541
542
543
      SymI_NeedsProto(__imp__wstat64)                    \
      SymI_NeedsProto(__imp__fstat64)                    \
      SymI_NeedsProto(__imp__wsopen)                     \
544
      RTS_WIN64_ONLY(SymI_HasProto(__imp__environ))      \
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
      SymI_NeedsProto(__imp_GetFileType)                 \
      SymI_NeedsProto(__imp_GetLastError)                \
      SymI_NeedsProto(__imp_QueryPerformanceFrequency)   \
      SymI_NeedsProto(__imp_QueryPerformanceCounter)     \
      SymI_NeedsProto(__imp_GetTickCount)                \
      SymI_NeedsProto(__imp_WaitForSingleObject)         \
      SymI_NeedsProto(__imp_PeekConsoleInputA)           \
      SymI_NeedsProto(__imp_ReadConsoleInputA)           \
      SymI_NeedsProto(__imp_PeekNamedPipe)               \
      SymI_NeedsProto(__imp__isatty)                     \
      SymI_NeedsProto(__imp_select)                      \
      RTS_WIN64_ONLY(SymI_HasProto(isatty))              \
      SymI_NeedsProto(__imp__get_osfhandle)              \
      SymI_NeedsProto(__imp_GetConsoleMode)              \
      SymI_NeedsProto(__imp_SetConsoleMode)              \
      SymI_NeedsProto(__imp_FlushConsoleInputBuffer)     \
Ian Lynagh's avatar
Ian Lynagh committed
561
      RTS_MINGW_GETTIMEOFDAY_SYM                         \
562
      SymI_NeedsProto(closedir)
Ian Lynagh's avatar
Ian Lynagh committed
563
564
565
566

#else
#define RTS_MINGW_ONLY_SYMBOLS /**/
#define RTS_CYGWIN_ONLY_SYMBOLS /**/
567
#endif
568

569

570
#if defined(darwin_HOST_OS) && HAVE_PRINTF_LDBLSTUB
Ian Lynagh's avatar
Ian Lynagh committed
571
#define RTS_DARWIN_ONLY_SYMBOLS                             \
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
     SymI_NeedsProto(asprintf$LDBLStub)                     \
     SymI_NeedsProto(err$LDBLStub)                          \
     SymI_NeedsProto(errc$LDBLStub)                         \
     SymI_NeedsProto(errx$LDBLStub)                         \
     SymI_NeedsProto(fprintf$LDBLStub)                      \
     SymI_NeedsProto(fscanf$LDBLStub)                       \
     SymI_NeedsProto(fwprintf$LDBLStub)                     \
     SymI_NeedsProto(fwscanf$LDBLStub)                      \
     SymI_NeedsProto(printf$LDBLStub)                       \
     SymI_NeedsProto(scanf$LDBLStub)                        \
     SymI_NeedsProto(snprintf$LDBLStub)                     \
     SymI_NeedsProto(sprintf$LDBLStub)                      \
     SymI_NeedsProto(sscanf$LDBLStub)                       \
     SymI_NeedsProto(strtold$LDBLStub)                      \
     SymI_NeedsProto(swprintf$LDBLStub)                     \
     SymI_NeedsProto(swscanf$LDBLStub)                      \
     SymI_NeedsProto(syslog$LDBLStub)                       \
     SymI_NeedsProto(vasprintf$LDBLStub)                    \
     SymI_NeedsProto(verr$LDBLStub)                         \
     SymI_NeedsProto(verrc$LDBLStub)                        \
     SymI_NeedsProto(verrx$LDBLStub)                        \
     SymI_NeedsProto(vfprintf$LDBLStub)                     \
     SymI_NeedsProto(vfscanf$LDBLStub)                      \
     SymI_NeedsProto(vfwprintf$LDBLStub)                    \
     SymI_NeedsProto(vfwscanf$LDBLStub)                     \
     SymI_NeedsProto(vprintf$LDBLStub)                      \
     SymI_NeedsProto(vscanf$LDBLStub)                       \
     SymI_NeedsProto(vsnprintf$LDBLStub)                    \
     SymI_NeedsProto(vsprintf$LDBLStub)                     \
     SymI_NeedsProto(vsscanf$LDBLStub)                      \
     SymI_NeedsProto(vswprintf$LDBLStub)                    \
     SymI_NeedsProto(vswscanf$LDBLStub)                     \
     SymI_NeedsProto(vsyslog$LDBLStub)                      \
     SymI_NeedsProto(vwarn$LDBLStub)                        \
     SymI_NeedsProto(vwarnc$LDBLStub)                       \
     SymI_NeedsProto(vwarnx$LDBLStub)                       \
     SymI_NeedsProto(vwprintf$LDBLStub)                     \
     SymI_NeedsProto(vwscanf$LDBLStub)                      \
     SymI_NeedsProto(warn$LDBLStub)                         \
     SymI_NeedsProto(warnc$LDBLStub)                        \
     SymI_NeedsProto(warnx$LDBLStub)                        \
     SymI_NeedsProto(wcstold$LDBLStub)                      \
     SymI_NeedsProto(wprintf$LDBLStub)                      \
     SymI_NeedsProto(wscanf$LDBLStub)
616
617
618
619
#else
#define RTS_DARWIN_ONLY_SYMBOLS
#endif

sof's avatar
sof committed
620
#ifndef SMP
621
# define MAIN_CAP_SYM SymI_HasProto(MainCapability)
sof's avatar
sof committed
622
623
624
#else
# define MAIN_CAP_SYM
#endif
625

sof's avatar
sof committed
626
#if !defined(mingw32_HOST_OS)
Ian Lynagh's avatar
Ian Lynagh committed
627
#define RTS_USER_SIGNALS_SYMBOLS        \
628
   SymI_HasProto(setIOManagerControlFd) \
Ian Lynagh's avatar
Ian Lynagh committed
629
630
631
   SymI_HasProto(setIOManagerWakeupFd)  \
   SymI_HasProto(ioManagerWakeup)       \
   SymI_HasProto(blockUserSignals)      \
632
   SymI_HasProto(unblockUserSignals)
sof's avatar
sof committed
633
#else
Ian Lynagh's avatar
Ian Lynagh committed
634
635
636
637
638
#define RTS_USER_SIGNALS_SYMBOLS        \
   SymI_HasProto(ioManagerWakeup)       \
   SymI_HasProto(sendIOManagerEvent)    \
   SymI_HasProto(readIOManagerEvent)    \
   SymI_HasProto(getIOManagerEvent)     \
639
   SymI_HasProto(console_handler)
sof's avatar
sof committed
640
641
#endif

642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
#define RTS_LIBFFI_SYMBOLS                                  \
     SymE_NeedsProto(ffi_prep_cif)                          \
     SymE_NeedsProto(ffi_call)                              \
     SymE_NeedsProto(ffi_type_void)                         \
     SymE_NeedsProto(ffi_type_float)                        \
     SymE_NeedsProto(ffi_type_double)                       \
     SymE_NeedsProto(ffi_type_sint64)                       \
     SymE_NeedsProto(ffi_type_uint64)                       \
     SymE_NeedsProto(ffi_type_sint32)                       \
     SymE_NeedsProto(ffi_type_uint32)                       \
     SymE_NeedsProto(ffi_type_sint16)                       \
     SymE_NeedsProto(ffi_type_uint16)                       \
     SymE_NeedsProto(ffi_type_sint8)                        \
     SymE_NeedsProto(ffi_type_uint8)                        \
     SymE_NeedsProto(ffi_type_pointer)
657

658
659
660
#ifdef TABLES_NEXT_TO_CODE
#define RTS_RET_SYMBOLS /* nothing */
#else
Ian Lynagh's avatar
Ian Lynagh committed
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
#define RTS_RET_SYMBOLS                                 \
      SymI_HasProto(stg_enter_ret)                      \
      SymI_HasProto(stg_gc_fun_ret)                     \
      SymI_HasProto(stg_ap_v_ret)                       \
      SymI_HasProto(stg_ap_f_ret)                       \
      SymI_HasProto(stg_ap_d_ret)                       \
      SymI_HasProto(stg_ap_l_ret)                       \
      SymI_HasProto(stg_ap_n_ret)                       \
      SymI_HasProto(stg_ap_p_ret)                       \
      SymI_HasProto(stg_ap_pv_ret)                      \
      SymI_HasProto(stg_ap_pp_ret)                      \
      SymI_HasProto(stg_ap_ppv_ret)                     \
      SymI_HasProto(stg_ap_ppp_ret)                     \
      SymI_HasProto(stg_ap_pppv_ret)                    \
      SymI_HasProto(stg_ap_pppp_ret)                    \
      SymI_HasProto(stg_ap_ppppp_ret)                   \
677
      SymI_HasProto(stg_ap_pppppp_ret)
678
679
#endif

680
681
/* Modules compiled with -ticky may mention ticky counters */
/* This list should marry up with the one in $(TOP)/includes/stg/Ticky.h */
Ian Lynagh's avatar
Ian Lynagh committed
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
#define RTS_TICKY_SYMBOLS                               \
      SymI_NeedsProto(ticky_entry_ctrs)                 \
      SymI_NeedsProto(top_ct)                           \
                                                        \
      SymI_HasProto(ENT_VIA_NODE_ctr)                   \
      SymI_HasProto(ENT_STATIC_THK_ctr)                 \
      SymI_HasProto(ENT_DYN_THK_ctr)                    \
      SymI_HasProto(ENT_STATIC_FUN_DIRECT_ctr)          \
      SymI_HasProto(ENT_DYN_FUN_DIRECT_ctr)             \
      SymI_HasProto(ENT_STATIC_CON_ctr)                 \
      SymI_HasProto(ENT_DYN_CON_ctr)                    \
      SymI_HasProto(ENT_STATIC_IND_ctr)                 \
      SymI_HasProto(ENT_DYN_IND_ctr)                    \
      SymI_HasProto(ENT_PERM_IND_ctr)                   \
      SymI_HasProto(ENT_PAP_ctr)                        \
      SymI_HasProto(ENT_AP_ctr)                         \
      SymI_HasProto(ENT_AP_STACK_ctr)                   \
      SymI_HasProto(ENT_BH_ctr)                         \
      SymI_HasProto(UNKNOWN_CALL_ctr)                   \
      SymI_HasProto(SLOW_CALL_v_ctr)                    \
      SymI_HasProto(SLOW_CALL_f_ctr)                    \
      SymI_HasProto(SLOW_CALL_d_ctr)                    \
      SymI_HasProto(SLOW_CALL_l_ctr)                    \
      SymI_HasProto(SLOW_CALL_n_ctr)                    \
      SymI_HasProto(SLOW_CALL_p_ctr)                    \
      SymI_HasProto(SLOW_CALL_pv_ctr)                   \
      SymI_HasProto(SLOW_CALL_pp_ctr)                   \
      SymI_HasProto(SLOW_CALL_ppv_ctr)                  \
      SymI_HasProto(SLOW_CALL_ppp_ctr)                  \
      SymI_HasProto(SLOW_CALL_pppv_ctr)                 \
      SymI_HasProto(SLOW_CALL_pppp_ctr)                 \
      SymI_HasProto(SLOW_CALL_ppppp_ctr)                \
      SymI_HasProto(SLOW_CALL_pppppp_ctr)               \
      SymI_HasProto(SLOW_CALL_OTHER_ctr)                \
716
      SymI_HasProto(ticky_slow_call_unevald)            \
Ian Lynagh's avatar
Ian Lynagh committed
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
      SymI_HasProto(SLOW_CALL_ctr)                      \
      SymI_HasProto(MULTI_CHUNK_SLOW_CALL_ctr)          \
      SymI_HasProto(MULTI_CHUNK_SLOW_CALL_CHUNKS_ctr)   \
      SymI_HasProto(KNOWN_CALL_ctr)                     \
      SymI_HasProto(KNOWN_CALL_TOO_FEW_ARGS_ctr)        \
      SymI_HasProto(KNOWN_CALL_EXTRA_ARGS_ctr)          \
      SymI_HasProto(SLOW_CALL_FUN_TOO_FEW_ctr)          \
      SymI_HasProto(SLOW_CALL_FUN_CORRECT_ctr)          \
      SymI_HasProto(SLOW_CALL_FUN_TOO_MANY_ctr)         \
      SymI_HasProto(SLOW_CALL_PAP_TOO_FEW_ctr)          \
      SymI_HasProto(SLOW_CALL_PAP_CORRECT_ctr)          \
      SymI_HasProto(SLOW_CALL_PAP_TOO_MANY_ctr)         \
      SymI_HasProto(SLOW_CALL_UNEVALD_ctr)              \
      SymI_HasProto(UPDF_OMITTED_ctr)                   \
      SymI_HasProto(UPDF_PUSHED_ctr)                    \
      SymI_HasProto(CATCHF_PUSHED_ctr)                  \
      SymI_HasProto(UPDF_RCC_PUSHED_ctr)                \
      SymI_HasProto(UPDF_RCC_OMITTED_ctr)               \
      SymI_HasProto(UPD_SQUEEZED_ctr)                   \
      SymI_HasProto(UPD_CON_IN_NEW_ctr)                 \
      SymI_HasProto(UPD_CON_IN_PLACE_ctr)               \
      SymI_HasProto(UPD_PAP_IN_NEW_ctr)                 \
      SymI_HasProto(UPD_PAP_IN_PLACE_ctr)               \
      SymI_HasProto(ALLOC_HEAP_ctr)                     \
      SymI_HasProto(ALLOC_HEAP_tot)                     \
      SymI_HasProto(ALLOC_FUN_ctr)                      \
      SymI_HasProto(ALLOC_FUN_adm)                      \
      SymI_HasProto(ALLOC_FUN_gds)                      \
      SymI_HasProto(ALLOC_FUN_slp)                      \
      SymI_HasProto(UPD_NEW_IND_ctr)                    \
      SymI_HasProto(UPD_NEW_PERM_IND_ctr)               \
      SymI_HasProto(UPD_OLD_IND_ctr)                    \
      SymI_HasProto(UPD_OLD_PERM_IND_ctr)               \
      SymI_HasProto(UPD_BH_UPDATABLE_ctr)               \
      SymI_HasProto(UPD_BH_SINGLE_ENTRY_ctr)            \
      SymI_HasProto(UPD_CAF_BH_UPDATABLE_ctr)           \
      SymI_HasProto(UPD_CAF_BH_SINGLE_ENTRY_ctr)        \
      SymI_HasProto(GC_SEL_ABANDONED_ctr)               \
      SymI_HasProto(GC_SEL_MINOR_ctr)                   \
      SymI_HasProto(GC_SEL_MAJOR_ctr)                   \
      SymI_HasProto(GC_FAILED_PROMOTION_ctr)            \
      SymI_HasProto(ALLOC_UP_THK_ctr)                   \
      SymI_HasProto(ALLOC_SE_THK_ctr)                   \
      SymI_HasProto(ALLOC_THK_adm)                      \
      SymI_HasProto(ALLOC_THK_gds)                      \
      SymI_HasProto(ALLOC_THK_slp)                      \
      SymI_HasProto(ALLOC_CON_ctr)                      \
      SymI_HasProto(ALLOC_CON_adm)                      \
      SymI_HasProto(ALLOC_CON_gds)                      \
      SymI_HasProto(ALLOC_CON_slp)                      \
      SymI_HasProto(ALLOC_TUP_ctr)                      \
      SymI_HasProto(ALLOC_TUP_adm)                      \
      SymI_HasProto(ALLOC_TUP_gds)                      \
      SymI_HasProto(ALLOC_TUP_slp)                      \
      SymI_HasProto(ALLOC_BH_ctr)                       \
      SymI_HasProto(ALLOC_BH_adm)                       \
      SymI_HasProto(ALLOC_BH_gds)                       \
      SymI_HasProto(ALLOC_BH_slp)                       \
      SymI_HasProto(ALLOC_PRIM_ctr)                     \
      SymI_HasProto(ALLOC_PRIM_adm)                     \
      SymI_HasProto(ALLOC_PRIM_gds)                     \
      SymI_HasProto(ALLOC_PRIM_slp)                     \
      SymI_HasProto(ALLOC_PAP_ctr)                      \
      SymI_HasProto(ALLOC_PAP_adm)                      \
      SymI_HasProto(ALLOC_PAP_gds)                      \
      SymI_HasProto(ALLOC_PAP_slp)                      \
      SymI_HasProto(ALLOC_TSO_ctr)                      \
      SymI_HasProto(ALLOC_TSO_adm)                      \
      SymI_HasProto(ALLOC_TSO_gds)                      \
      SymI_HasProto(ALLOC_TSO_slp)                      \
      SymI_HasProto(RET_NEW_ctr)                        \
      SymI_HasProto(RET_OLD_ctr)                        \
      SymI_HasProto(RET_UNBOXED_TUP_ctr)                \
790
791
792
      SymI_HasProto(RET_SEMI_loads_avoided)


793
// On most platforms, the garbage collector rewrites references
Ian Lynagh's avatar
Ian Lynagh committed
794
//      to small integer and char objects to a set of common, shared ones.
795
796
//
// We don't do this when compiling to Windows DLLs at the moment because
Ian Lynagh's avatar
Ian Lynagh committed
797
//      it doesn't support cross package data references well.
798
//
Ian Lynagh's avatar
Ian Lynagh committed
799
#if defined(__PIC__) && defined(mingw32_HOST_OS) && defined(i386_HOST_ARCH)
800
801
#define RTS_INTCHAR_SYMBOLS
#else
Ian Lynagh's avatar
Ian Lynagh committed
802
803
804
#define RTS_INTCHAR_SYMBOLS                             \
      SymI_HasProto(stg_CHARLIKE_closure)               \
      SymI_HasProto(stg_INTLIKE_closure)
805
806
807
#endif


Ian Lynagh's avatar
Ian Lynagh committed
808
809
#define RTS_SYMBOLS                                     \
      Maybe_Stable_Names                                \
810
      RTS_TICKY_SYMBOLS                                 \
Ian Lynagh's avatar
Ian Lynagh committed
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
      SymI_HasProto(StgReturn)                          \
      SymI_HasProto(stg_enter_info)                     \
      SymI_HasProto(stg_gc_void_info)                   \
      SymI_HasProto(__stg_gc_enter_1)                   \
      SymI_HasProto(stg_gc_noregs)                      \
      SymI_HasProto(stg_gc_unpt_r1_info)                \
      SymI_HasProto(stg_gc_unpt_r1)                     \
      SymI_HasProto(stg_gc_unbx_r1_info)                \
      SymI_HasProto(stg_gc_unbx_r1)                     \
      SymI_HasProto(stg_gc_f1_info)                     \
      SymI_HasProto(stg_gc_f1)                          \
      SymI_HasProto(stg_gc_d1_info)                     \
      SymI_HasProto(stg_gc_d1)                          \
      SymI_HasProto(stg_gc_l1_info)                     \
      SymI_HasProto(stg_gc_l1)                          \
      SymI_HasProto(__stg_gc_fun)                       \
      SymI_HasProto(stg_gc_fun_info)                    \
      SymI_HasProto(stg_gc_gen)                         \
      SymI_HasProto(stg_gc_gen_info)                    \
      SymI_HasProto(stg_gc_gen_hp)                      \
      SymI_HasProto(stg_gc_ut)                          \
      SymI_HasProto(stg_gen_yield)                      \
      SymI_HasProto(stg_yield_noregs)                   \
      SymI_HasProto(stg_yield_to_interpreter)           \
      SymI_HasProto(stg_gen_block)                      \
      SymI_HasProto(stg_block_noregs)                   \
      SymI_HasProto(stg_block_1)                        \
      SymI_HasProto(stg_block_takemvar)                 \
      SymI_HasProto(stg_block_putmvar)                  \
840
      MAIN_CAP_SYM                                      \
Ian Lynagh's avatar
Ian Lynagh committed
841
842
843
844
845
846
847
848
849
850
851
852
853
854
      SymI_HasProto(MallocFailHook)                     \
      SymI_HasProto(OnExitHook)                         \
      SymI_HasProto(OutOfHeapHook)                      \
      SymI_HasProto(StackOverflowHook)                  \
      SymI_HasProto(addDLL)                             \
      SymI_HasProto(__int_encodeDouble)                 \
      SymI_HasProto(__word_encodeDouble)                \
      SymI_HasProto(__2Int_encodeDouble)                \
      SymI_HasProto(__int_encodeFloat)                  \
      SymI_HasProto(__word_encodeFloat)                 \
      SymI_HasProto(stg_atomicallyzh)                   \
      SymI_HasProto(barf)                               \
      SymI_HasProto(debugBelch)                         \
      SymI_HasProto(errorBelch)                         \
Simon Marlow's avatar
Simon Marlow committed
855
      SymI_HasProto(sysErrorBelch)                      \
Ian Lynagh's avatar
Ian Lynagh committed
856
857
858
859
860
861
      SymI_HasProto(stg_getMaskingStatezh)              \
      SymI_HasProto(stg_maskAsyncExceptionszh)          \
      SymI_HasProto(stg_maskUninterruptiblezh)          \
      SymI_HasProto(stg_catchzh)                        \
      SymI_HasProto(stg_catchRetryzh)                   \
      SymI_HasProto(stg_catchSTMzh)                     \
862
      SymI_HasProto(stg_checkzh)                        \
863
      SymI_HasProto(closure_flags)                      \
Ian Lynagh's avatar
Ian Lynagh committed
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
      SymI_HasProto(cmp_thread)                         \
      SymI_HasProto(createAdjustor)                     \
      SymI_HasProto(stg_decodeDoublezu2Intzh)           \
      SymI_HasProto(stg_decodeFloatzuIntzh)             \
      SymI_HasProto(defaultsHook)                       \
      SymI_HasProto(stg_delayzh)                        \
      SymI_HasProto(stg_deRefWeakzh)                    \
      SymI_HasProto(stg_deRefStablePtrzh)               \
      SymI_HasProto(dirty_MUT_VAR)                      \
      SymI_HasProto(stg_forkzh)                         \
      SymI_HasProto(stg_forkOnzh)                       \
      SymI_HasProto(forkProcess)                        \
      SymI_HasProto(forkOS_createThread)                \
      SymI_HasProto(freeHaskellFunctionPtr)             \
      SymI_HasProto(getOrSetGHCConcSignalSignalHandlerStore)            \
      SymI_HasProto(getOrSetGHCConcWindowsPendingDelaysStore)           \
      SymI_HasProto(getOrSetGHCConcWindowsIOManagerThreadStore)         \
      SymI_HasProto(getOrSetGHCConcWindowsProddingStore)                \
      SymI_HasProto(getOrSetSystemEventThreadEventManagerStore)         \
      SymI_HasProto(getOrSetSystemEventThreadIOManagerThreadStore)      \
884
      SymI_HasProto(getGCStats)                         \
Ian Lynagh's avatar
Ian Lynagh committed
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
      SymI_HasProto(genSymZh)                           \
      SymI_HasProto(genericRaise)                       \
      SymI_HasProto(getProgArgv)                        \
      SymI_HasProto(getFullProgArgv)                    \
      SymI_HasProto(getStablePtr)                       \
      SymI_HasProto(hs_init)                            \
      SymI_HasProto(hs_exit)                            \
      SymI_HasProto(hs_set_argv)                        \
      SymI_HasProto(hs_add_root)                        \
      SymI_HasProto(hs_perform_gc)                      \
      SymI_HasProto(hs_free_stable_ptr)                 \
      SymI_HasProto(hs_free_fun_ptr)                    \
      SymI_HasProto(hs_hpc_rootModule)                  \
      SymI_HasProto(hs_hpc_module)                      \
      SymI_HasProto(initLinker)                         \
900
901
902
      SymI_HasProto(stg_unpackClosurezh)                \
      SymI_HasProto(stg_getApStackValzh)                \
      SymI_HasProto(stg_getSparkzh)                     \
Simon Marlow's avatar
Simon Marlow committed
903
      SymI_HasProto(stg_numSparkszh)                    \
Ian Lynagh's avatar
Ian Lynagh committed
904
905
906
907
908
909
910
911
912
913
914
      SymI_HasProto(stg_isCurrentThreadBoundzh)         \
      SymI_HasProto(stg_isEmptyMVarzh)                  \
      SymI_HasProto(stg_killThreadzh)                   \
      SymI_HasProto(loadArchive)                        \
      SymI_HasProto(loadObj)                            \
      SymI_HasProto(insertStableSymbol)                 \
      SymI_HasProto(insertSymbol)                       \
      SymI_HasProto(lookupSymbol)                       \
      SymI_HasProto(stg_makeStablePtrzh)                \
      SymI_HasProto(stg_mkApUpd0zh)                     \
      SymI_HasProto(stg_myThreadIdzh)                   \
915
      SymI_HasProto(stg_labelThreadzh)                  \
Ian Lynagh's avatar
Ian Lynagh committed
916
      SymI_HasProto(stg_newArrayzh)                     \
917
      SymI_HasProto(stg_newArrayArrayzh)                     \
Ian Lynagh's avatar
Ian Lynagh committed
918
919
920
921
922
923
924
925
      SymI_HasProto(stg_newBCOzh)                       \
      SymI_HasProto(stg_newByteArrayzh)                 \
      SymI_HasProto_redirect(newCAF, newDynCAF)         \
      SymI_HasProto(stg_newMVarzh)                      \
      SymI_HasProto(stg_newMutVarzh)                    \
      SymI_HasProto(stg_newTVarzh)                      \
      SymI_HasProto(stg_noDuplicatezh)                  \
      SymI_HasProto(stg_atomicModifyMutVarzh)           \
Simon Marlow's avatar
Simon Marlow committed
926
      SymI_HasProto(stg_casMutVarzh)                    \
Ian Lynagh's avatar
Ian Lynagh committed
927
928
929
930
931
932
933
934
935
936
937
938
939
      SymI_HasProto(stg_newPinnedByteArrayzh)           \
      SymI_HasProto(stg_newAlignedPinnedByteArrayzh)    \
      SymI_HasProto(newSpark)                           \
      SymI_HasProto(performGC)                          \
      SymI_HasProto(performMajorGC)                     \
      SymI_HasProto(prog_argc)                          \
      SymI_HasProto(prog_argv)                          \
      SymI_HasProto(stg_putMVarzh)                      \
      SymI_HasProto(stg_raisezh)                        \
      SymI_HasProto(stg_raiseIOzh)                      \
      SymI_HasProto(stg_readTVarzh)                     \
      SymI_HasProto(stg_readTVarIOzh)                   \
      SymI_HasProto(resumeThread)                       \
940
      SymI_HasProto(setNumCapabilities)                 \
941
      SymI_HasProto(getNumberOfProcessors)              \
942
      SymI_HasProto(resolveObjs)                        \
943
      SymI_HasProto(stg_retryzh)                        \
Ian Lynagh's avatar
Ian Lynagh committed
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
      SymI_HasProto(rts_apply)                          \
      SymI_HasProto(rts_checkSchedStatus)               \
      SymI_HasProto(rts_eval)                           \
      SymI_HasProto(rts_evalIO)                         \
      SymI_HasProto(rts_evalLazyIO)                     \
      SymI_HasProto(rts_evalStableIO)                   \
      SymI_HasProto(rts_eval_)                          \
      SymI_HasProto(rts_getBool)                        \
      SymI_HasProto(rts_getChar)                        \
      SymI_HasProto(rts_getDouble)                      \
      SymI_HasProto(rts_getFloat)                       \
      SymI_HasProto(rts_getInt)                         \
      SymI_HasProto(rts_getInt8)                        \
      SymI_HasProto(rts_getInt16)                       \
      SymI_HasProto(rts_getInt32)                       \
      SymI_HasProto(rts_getInt64)                       \
      SymI_HasProto(rts_getPtr)                         \
      SymI_HasProto(rts_getFunPtr)                      \
      SymI_HasProto(rts_getStablePtr)                   \
      SymI_HasProto(rts_getThreadId)                    \
      SymI_HasProto(rts_getWord)                        \
      SymI_HasProto(rts_getWord8)                       \
      SymI_HasProto(rts_getWord16)                      \
      SymI_HasProto(rts_getWord32)                      \
      SymI_HasProto(rts_getWord64)                      \
      SymI_HasProto(rts_lock)                           \
      SymI_HasProto(rts_mkBool)                         \
      SymI_HasProto(rts_mkChar)                         \
      SymI_HasProto(rts_mkDouble)                       \
      SymI_HasProto(rts_mkFloat)                        \
      SymI_HasProto(rts_mkInt)                          \
      SymI_HasProto(rts_mkInt8)                         \
      SymI_HasProto(rts_mkInt16)                        \
      SymI_HasProto(rts_mkInt32)                        \
      SymI_HasProto(rts_mkInt64)                        \
      SymI_HasProto(rts_mkPtr)                          \
      SymI_HasProto(rts_mkFunPtr)                       \
      SymI_HasProto(rts_mkStablePtr)                    \
      SymI_HasProto(rts_mkString)                       \
      SymI_HasProto(rts_mkWord)                         \
      SymI_HasProto(rts_mkWord8)                        \
      SymI_HasProto(rts_mkWord16)                       \
      SymI_HasProto(rts_mkWord32)                       \
      SymI_HasProto(rts_mkWord64)                       \
      SymI_HasProto(rts_unlock)                         \
989
      SymI_HasProto(rts_unsafeGetMyCapability)          \
Ian Lynagh's avatar
Ian Lynagh committed
990
      SymI_HasProto(rtsSupportsBoundThreads)            \
991
      SymI_HasProto(rts_isProfiled)                     \
Ian Lynagh's avatar
Ian Lynagh committed
992
993
994
995
996
997
998
999
1000
      SymI_HasProto(setProgArgv)                        \
      SymI_HasProto(startupHaskell)                     \
      SymI_HasProto(shutdownHaskell)                    \
      SymI_HasProto(shutdownHaskellAndExit)             \
      SymI_HasProto(stable_ptr_table)                   \
      SymI_HasProto(stackOverflow)                      \
      SymI_HasProto(stg_CAF_BLACKHOLE_info)             \
      SymI_HasProto(stg_BLACKHOLE_info)                 \
      SymI_HasProto(__stg_EAGER_BLACKHOLE_info)         \
1001
      SymI_HasProto(stg_BLOCKING_QUEUE_CLEAN_info)      \
Ian Lynagh's avatar
Ian Lynagh committed
1002
      SymI_HasProto(stg_BLOCKING_QUEUE_DIRTY_info)      \
1003
      SymI_HasProto(startTimer)                         \
Ian Lynagh's avatar
Ian Lynagh committed
1004
1005
1006
      SymI_HasProto(stg_MVAR_CLEAN_info)                \
      SymI_HasProto(stg_MVAR_DIRTY_info)                \
      SymI_HasProto(stg_IND_STATIC_info)                \
1007
      SymI_HasProto(stg_ARR_WORDS_info)                 \
Ian Lynagh's avatar
Ian Lynagh committed
1008
1009
1010
      SymI_HasProto(stg_MUT_ARR_PTRS_DIRTY_info)        \
      SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN_info)       \
      SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN0_info)      \
1011
      SymI_HasProto(stg_WEAK_info)                      \
Ian Lynagh's avatar
Ian Lynagh committed
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
      SymI_HasProto(stg_ap_v_info)                      \
      SymI_HasProto(stg_ap_f_info)                      \
      SymI_HasProto(stg_ap_d_info)                      \
      SymI_HasProto(stg_ap_l_info)                      \
      SymI_HasProto(stg_ap_n_info)                      \
      SymI_HasProto(stg_ap_p_info)                      \
      SymI_HasProto(stg_ap_pv_info)                     \
      SymI_HasProto(stg_ap_pp_info)                     \
      SymI_HasProto(stg_ap_ppv_info)                    \
      SymI_HasProto(stg_ap_ppp_info)                    \
      SymI_HasProto(stg_ap_pppv_info)                   \
      SymI_HasProto(stg_ap_pppp_info)                   \
      SymI_HasProto(stg_ap_ppppp_info)                  \
      SymI_HasProto(stg_ap_pppppp_info)                 \
      SymI_HasProto(stg_ap_0_fast)                      \
      SymI_HasProto(stg_ap_v_fast)                      \
      SymI_HasProto(stg_ap_f_fast)                      \
      SymI_HasProto(stg_ap_d_fast)                      \
      SymI_HasProto(stg_ap_l_fast)                      \
      SymI_HasProto(stg_ap_n_fast)                      \
      SymI_HasProto(stg_ap_p_fast)                      \
      SymI_HasProto(stg_ap_pv_fast)                     \
      SymI_HasProto(stg_ap_pp_fast)                     \
      SymI_HasProto(stg_ap_ppv_fast)                    \
      SymI_HasProto(stg_ap_ppp_fast)                    \
      SymI_HasProto(stg_ap_pppv_fast)                   \
      SymI_HasProto(stg_ap_pppp_fast)                   \
      SymI_HasProto(stg_ap_ppppp_fast)                  \
      SymI_HasProto(stg_ap_pppppp_fast)                 \
      SymI_HasProto(stg_ap_1_upd_info)                  \
      SymI_HasProto(stg_ap_2_upd_info)                  \
      SymI_HasProto(stg_ap_3_upd_info)                  \
      SymI_HasProto(stg_ap_4_upd_info)                  \
      SymI_HasProto(stg_ap_5_upd_info)                  \
      SymI_HasProto(stg_ap_6_upd_info)                  \
      SymI_HasProto(stg_ap_7_upd_info)                  \
      SymI_HasProto(stg_exit)                           \
      SymI_HasProto(stg_sel_0_upd_info)                 \
      SymI_HasProto(stg_sel_10_upd_info)                \
      SymI_HasProto(stg_sel_11_upd_info)                \
      SymI_HasProto(stg_sel_12_upd_info)                \
      SymI_HasProto(stg_sel_13_upd_info)                \
      SymI_HasProto(stg_sel_14_upd_info)                \
      SymI_HasProto(stg_sel_15_upd_info)                \
      SymI_HasProto(stg_sel_1_upd_info)                 \
      SymI_HasProto(stg_sel_2_upd_info)                 \
      SymI_HasProto(stg_sel_3_upd_info)                 \
      SymI_HasProto(stg_sel_4_upd_info)                 \
      SymI_HasProto(stg_sel_5_upd_info)                 \
      SymI_HasProto(stg_sel_6_upd_info)                 \
      SymI_HasProto(stg_sel_7_upd_info)                 \
      SymI_HasProto(stg_sel_8_upd_info)                 \
      SymI_HasProto(stg_sel_9_upd_info)                 \
      SymI_HasProto(stg_upd_frame_info)                 \
      SymI_HasProto(stg_bh_upd_frame_info)              \
      SymI_HasProto(suspendThread)                      \
      SymI_HasProto(stg_takeMVarzh)                     \
      SymI_HasProto(stg_threadStatuszh)                 \
      SymI_HasProto(stg_tryPutMVarzh)                   \
      SymI_HasProto(stg_tryTakeMVarzh)                  \
      SymI_HasProto(stg_unmaskAsyncExceptionszh)        \
1073
      SymI_HasProto(unloadObj)                          \
Ian Lynagh's avatar
Ian Lynagh committed
1074
1075
1076
1077
      SymI_HasProto(stg_unsafeThawArrayzh)              \
      SymI_HasProto(stg_waitReadzh)                     \
      SymI_HasProto(stg_waitWritezh)                    \
      SymI_HasProto(stg_writeTVarzh)                    \
1078
      SymI_HasProto(stg_yieldzh)                        \
1079
      SymI_NeedsProto(stg_interp_constr_entry)          \
1080
      SymI_HasProto(stg_arg_bitmaps)                    \
1081
      SymI_HasProto(large_alloc_lim)                    \
Simon Marlow's avatar
Simon Marlow committed
1082
      SymI_HasProto(g0)                                 \
1083
      SymI_HasProto(allocate)                           \
Ian Lynagh's avatar
Ian Lynagh committed
1084
1085
      SymI_HasProto(allocateExec)                       \
      SymI_HasProto(freeExec)                           \
1086
1087
1088
      SymI_HasProto(getAllocations)                     \
      SymI_HasProto(revertCAFs)                         \
      SymI_HasProto(RtsFlags)                           \
Ian Lynagh's avatar
Ian Lynagh committed
1089
1090
1091
1092
1093
      SymI_NeedsProto(rts_breakpoint_io_action)         \
      SymI_NeedsProto(rts_stop_next_breakpoint)         \
      SymI_NeedsProto(rts_stop_on_exception)            \
      SymI_HasProto(stopTimer)                          \
      SymI_HasProto(n_capabilities)                     \
1094
      SymI_HasProto(stg_traceCcszh)                     \
1095
      SymI_HasProto(stg_traceEventzh)                   \
Ian Lynagh's avatar
Ian Lynagh committed
1096
      RTS_USER_SIGNALS_SYMBOLS                          \
1097
      RTS_INTCHAR_SYMBOLS
1098

1099

1100
1101
// 64-bit support functions in libgcc.a
#if defined(__GNUC__) && SIZEOF_VOID_P <= 4
Ian Lynagh's avatar
Ian Lynagh committed
1102
#define RTS_LIBGCC_SYMBOLS                             \
1103
1104
1105
      SymI_NeedsProto(__divdi3)                        \
      SymI_NeedsProto(__udivdi3)                       \
      SymI_NeedsProto(__moddi3)                        \
Ian Lynagh's avatar
Ian Lynagh committed
1106
1107
1108
1109
      SymI_NeedsProto(__umoddi3)                       \
      SymI_NeedsProto(__muldi3)                        \
      SymI_NeedsProto(__ashldi3)                       \
      SymI_NeedsProto(__ashrdi3)                       \
1110
1111
      SymI_NeedsProto(__lshrdi3)                       \
      SymI_NeedsProto(__fixunsdfdi)
1112
1113
1114
1115
#else
#define RTS_LIBGCC_SYMBOLS
#endif

1116
#if defined(darwin_HOST_OS) && defined(powerpc_HOST_ARCH)
1117
1118
1119
      // Symbols that don't have a leading underscore
      // on Mac OS X. They have to receive special treatment,
      // see machoInitSymbolsWithoutUnderscore()
Ian Lynagh's avatar
Ian Lynagh committed
1120
1121
#define RTS_MACHO_NOUNDERLINE_SYMBOLS                   \
      SymI_NeedsProto(saveFP)                           \
1122
      SymI_NeedsProto(restFP)
1123
#endif
1124
1125

/* entirely bogus claims about types of these symbols */
1126
#define SymI_NeedsProto(vvv)  extern void vvv(void);
Ian Lynagh's avatar
Ian Lynagh committed
1127
#if defined(__PIC__) && defined(mingw32_HOST_OS) && defined(i386_HOST_ARCH)
1128
1129
#define SymE_HasProto(vvv)    SymE_HasProto(vvv);
#define SymE_NeedsProto(vvv)    extern void _imp__ ## vvv (void);
1130
#else
1131
1132
#define SymE_NeedsProto(vvv)  SymI_NeedsProto(vvv);
#define SymE_HasProto(vvv)    SymI_HasProto(vvv)
1133
#endif
1134
1135
#define SymI_HasProto(vvv) /**/
#define SymI_HasProto_redirect(vvv,xxx) /**/
1136
RTS_SYMBOLS
1137
RTS_RET_SYMBOLS
1138
RTS_POSIX_ONLY_SYMBOLS
1139
RTS_MINGW_ONLY_SYMBOLS
sof's avatar
sof committed
1140
RTS_CYGWIN_ONLY_SYMBOLS
1141
RTS_DARWIN_ONLY_SYMBOLS
1142
RTS_LIBGCC_SYMBOLS
1143
RTS_LIBFFI_SYMBOLS
1144
1145
1146
1147
1148
#undef SymI_NeedsProto
#undef SymI_HasProto
#undef SymI_HasProto_redirect
#undef SymE_HasProto
#undef SymE_NeedsProto
1149
1150
1151
1152
1153
1154
1155

#ifdef LEADING_UNDERSCORE
#define MAYBE_LEADING_UNDERSCORE_STR(s) ("_" s)
#else
#define MAYBE_LEADING_UNDERSCORE_STR(s) (s)
#endif

1156
#define SymI_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1157
                    (void*)(&(vvv)) },
1158
#define SymE_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
Ian Lynagh's avatar
Ian Lynagh committed
1159
            (void*)DLL_IMPORT_DATA_REF(vvv) },
1160

1161
1162
1163
1164
#define SymI_NeedsProto(vvv) SymI_HasProto(vvv)
#define SymE_NeedsProto(vvv) SymE_HasProto(vvv)

// SymI_HasProto_redirect allows us to redirect references to one symbol to
1165
// another symbol.  See newCAF/newDynCAF for an example.
Ian Lynagh's avatar
Ian Lynagh committed
1166
#define SymI_HasProto_redirect(vvv,xxx)   \
1167
1168
1169
    { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
      (void*)(&(xxx)) },

1170
static RtsSymbolVal rtsSyms[] = {
1171
      RTS_SYMBOLS
1172
      RTS_RET_SYMBOLS
1173
      RTS_POSIX_ONLY_SYMBOLS
1174
      RTS_MINGW_ONLY_SYMBOLS
sof's avatar
sof committed
1175
      RTS_CYGWIN_ONLY_SYMBOLS
1176
      RTS_DARWIN_ONLY_SYMBOLS
1177
      RTS_LIBGCC_SYMBOLS
1178
      RTS_LIBFFI_SYMBOLS
1179
1180
1181
1182
#if defined(darwin_HOST_OS) && defined(i386_HOST_ARCH)
      // dyld stub code contains references to this,
      // but it should never be called because we treat
      // lazy pointers as nonlazy.
1183
      { "dyld_stub_binding_helper", (void*)0xDEADBEEF },
1184
#endif
1185
1186
1187
      { 0, 0 } /* sentinel */
};

1188

1189
1190
1191
/* -----------------------------------------------------------------------------
 * Insert symbols into hash tables, checking for duplicates.
 */
1192

1193
static void ghciInsertStrHashTable ( pathchar* obj_name,
1194
                                     HashTable *table,
1195
                                     char* key,
1196
                                     void *data
Ian Lynagh's avatar
Ian Lynagh committed
1197
                                   )
1198
{
Simon Marlow's avatar
Simon Marlow committed
1199
1200
   if (lookupHashTable(table, (StgWord)key) == NULL)
   {
1201
1202
      insertStrHashTable(table, (StgWord)key, data);
      return;
Simon Marlow's avatar
Simon Marlow committed
1203
1204
   }
   debugBelch(
1205
1206
1207
1208
      "\n\n"
      "GHCi runtime linker: fatal error: I found a duplicate definition for symbol\n"
      "   %s\n"
      "whilst processing object file\n"
1209
      "   %" PATH_FMT "\n"
1210
1211
1212
1213
1214
1215
1216
1217
1218
      "This could be caused by:\n"
      "   * Loading two different object files which export the same symbol\n"
      "   * Specifying the same object file twice on the GHCi command line\n"
      "   * An incorrect `package.conf' entry, causing some object to be\n"
      "     loaded twice.\n"
      "GHCi cannot safely continue in this situation.  Exiting now.  Sorry.\n"
      "\n",
      (char*)key,
      obj_name
Simon Marlow's avatar
Simon Marlow committed
1219
   );
1220
   stg_exit(1);
1221
}
1222
1223
1224
/* -----------------------------------------------------------------------------
 * initialize the object linker
 */
1225
1226
1227
1228


static int linker_init_done = 0 ;

1229
#if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1230
static void *dl_prog_handle;
1231
1232
1233
1234
1235
static regex_t re_invalid;
static regex_t re_realso;
#ifdef THREADED_RTS
static Mutex dl_mutex; // mutex to protect dlopen/dlerror critical section
#endif
1236
#endif
1237
1238
1239
1240

void
initLinker( void )
{
1241
    RtsSymbolVal *sym;
Simon Marlow's avatar
Simon Marlow committed
1242
#if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1243
    int compileResult;
Simon Marlow's avatar
Simon Marlow committed
1244
#endif
1245

1246
1247
    IF_DEBUG(linker, debugBelch("initLinker: start\n"));

1248
1249
1250
    /* Make initLinker idempotent, so we can call it
       before evey relevant operation; that means we
       don't need to initialise the linker separately */
Ian Lynagh's avatar
Ian Lynagh committed
1251
1252
1253
    if (linker_init_done == 1) {
        IF_DEBUG(linker, debugBelch("initLinker: idempotent return\n"));
        return;
1254
1255
    } else {
        linker_init_done = 1;
1256
1257
    }

Simon Marlow's avatar
Simon Marlow committed
1258
#if defined(THREADED_RTS) && (defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO))
1259
1260
    initMutex(&dl_mutex);
#endif
1261
    stablehash = allocStrHashTable();
1262
1263
1264
1265
    symhash = allocStrHashTable();

    /* populate the symbol table with stuff from the RTS */
    for (sym = rtsSyms; sym->lbl != NULL; sym++) {
1266
        ghciInsertStrHashTable(WSTR("(GHCi built-in symbols)"),
1267
                               symhash, sym->lbl, sym->addr);
Ian Lynagh's avatar
Ian Lynagh committed
1268
        IF_DEBUG(linker, debugBelch("initLinker: inserting rts symbol %s, %p\n", sym->lbl, sym->addr));
1269
    }
1270
#   if defined(OBJFORMAT_MACHO) && defined(powerpc_HOST_ARCH)
1271
1272
1273
    machoInitSymbolsWithoutUnderscore();
#   endif

1274
#   if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1275
#   if defined(RTLD_DEFAULT)
1276
1277
    dl_prog_handle = RTLD_DEFAULT;
#   else
1278
    dl_prog_handle = dlopen(NULL, RTLD_LAZY);
1279
#   endif /* RTLD_DEFAULT */
1280
1281

    compileResult = regcomp(&re_invalid,
1282
           "(([^ \t()])+\\.so([^ \t:()])*):([ \t])*(invalid ELF header|file too short)",
1283
           REG_EXTENDED);
Ian Lynagh's avatar
Ian Lynagh committed
1284
1285
1286
    if (compileResult != 0) {
        barf("Compiling re_invalid failed");
    }
1287
    compileResult = regcomp(&re_realso,
1288
           "(GROUP|INPUT) *\\( *([^ )]+)",
1289
           REG_EXTENDED);
Ian Lynagh's avatar
Ian Lynagh committed
1290
1291
1292
    if (compileResult != 0) {
        barf("Compiling re_realso failed");
    }
1293
#   endif
1294

1295
#if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1296
1297
1298
1299
1300
    if (RtsFlags.MiscFlags.linkerMemBase != 0) {
        // User-override for mmap_32bit_base
        mmap_32bit_base = (void*)RtsFlags.MiscFlags.linkerMemBase;
    }
#endif
1301
1302
1303
1304
1305
1306
1307

#if defined(mingw32_HOST_OS)
    /*
     * These two libraries cause problems when added to the static link,
     * but are necessary for resolving symbols in GHCi, hence we load
     * them manually here.
     */
1308
1309
    addDLL(WSTR("msvcrt"));
    addDLL(WSTR("kernel32"));
1310
#endif
1311
1312
1313

    IF_DEBUG(linker, debugBelch("initLinker: done\n"));
    return;
1314
1315
}

1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
void
exitLinker( void ) {
#if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
   if (linker_init_done == 1) {
      regfree(&re_invalid);
      regfree(&re_realso);
#ifdef THREADED_RTS
      closeMutex(&dl_mutex);
#endif
   }
#endif
}

1329
/* -----------------------------------------------------------------------------
1330
1331
1332
 *                  Loading DLL or .so dynamic libraries
 * -----------------------------------------------------------------------------
 *
1333
1334
1335
1336
 * Add a DLL from which symbols may be found.  In the ELF case, just
 * do RTLD_GLOBAL-style add, so no further messing around needs to
 * happen in order that symbols in the loaded .so are findable --
 * lookupSymbol() will subsequently see them by dlsym on the program's
1337
1338
 * dl-handle.  Returns NULL if success, otherwise ptr to an err msg.
 *
1339
 * In the PEi386 case, open the DLLs and put handles to them in a
1340
 * linked list.  When looking for a symbol, try all handles in the
1341
1342
1343
1344
1345
 * list.  This means that we need to load even DLLs that are guaranteed
 * to be in the ghc.exe image already, just so we can get a handle
 * to give to loadSymbol, so that we can find the symbols.  For such
 * libraries, the LoadLibrary call should be a no-op except for returning
 * the handle.
1346
 *
1347
 */
1348
1349
1350
1351
1352
1353

#if defined(OBJFORMAT_PEi386)
/* A record for storing handles into DLLs. */

typedef
   struct _OpenedDLL {
1354
      pathchar*          name;
1355
1356
      struct _OpenedDLL* next;
      HINSTANCE instance;
1357
   }
1358
1359
1360
1361
1362
1363
   OpenedDLL;

/* A list thereof. */
static OpenedDLL* opened_dlls = NULL;
#endif

1364
#  if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1365

1366
static const char *
1367
1368
1369
internal_dlopen(const char *dll_name)
{
   void *hdl;
1370
1371
   const char *errmsg;
   char *errmsg_copy;
1372

1373
1374
   // omitted: RTLD_NOW
   // see http://www.haskell.org/pipermail/cvs-ghc/2007-September/038570.html
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
   IF_DEBUG(linker,
      debugBelch("internal_dlopen: dll_name = '%s'\n", dll_name));

   //-------------- Begin critical section ------------------
   // This critical section is necessary because dlerror() is not
   // required to be reentrant (see POSIX -- IEEE Std 1003.1-2008)
   // Also, the error message returned must be copied to preserve it
   // (see POSIX also)

   ACQUIRE_LOCK(&dl_mutex);
   hdl = dlopen(dll_name, RTLD_LAZY | RTLD_GLOBAL);
dons's avatar
dons committed
1386

1387
   errmsg = NULL;
1388
1389
1390
1391
   if (hdl == NULL) {
      /* dlopen failed; return a ptr to the error msg. */
      errmsg = dlerror();
      if (errmsg == NULL) errmsg = "addDLL: unknown error";
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
      errmsg_copy = stgMallocBytes(strlen(errmsg)+1, "addDLL");
      strcpy(errmsg_copy, errmsg);
      errmsg = errmsg_copy;
   }
   RELEASE_LOCK(&dl_mutex);
   //--------------- End critical section -------------------

   return errmsg;
}
#  endif

const char *
1404
addDLL( pathchar *dll_name )
1405
1406
1407
1408
1409
1410
{
#  if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
   /* ------------------- ELF DLL loader ------------------- */

#define NMATCH 5
   regmatch_t match[NMATCH];
1411
   const char *errmsg;
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
   FILE* fp;
   size_t match_length;
#define MAXLINE 1000
   char line[MAXLINE];
   int result;

   initLinker();

   IF_DEBUG(linker, debugBelch("addDLL: dll_name = '%s'\n", dll_name));
   errmsg = internal_dlopen(dll_name);

   if (errmsg == NULL) {