forked from emscripten-core/emscripten
-
Notifications
You must be signed in to change notification settings - Fork 1
/
emscripten.py
executable file
·1315 lines (1182 loc) · 56.3 KB
/
emscripten.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
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
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
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
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
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
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
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
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
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
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
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
716
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
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
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
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
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
989
990
991
992
993
994
995
996
997
998
999
1000
#!/usr/bin/env python2
'''
You should normally never use this! Use emcc instead.
This is a small wrapper script around the core JS compiler. This calls that
compiler with the settings given to it. It can also read data from C/C++
header files (so that the JS compiler can see the constants in those
headers, for the libc implementation in JS).
'''
import os, sys, json, optparse, subprocess, re, time, string, logging
from tools import shared
from tools import jsrun, cache as cache_module, tempfiles
from tools.response_file import read_response_file
from tools.shared import WINDOWS
__rootpath__ = os.path.abspath(os.path.dirname(__file__))
def path_from_root(*pathelems):
"""Returns the absolute path for which the given path elements are
relative to the emscripten root.
"""
return os.path.join(__rootpath__, *pathelems)
def get_configuration():
if hasattr(get_configuration, 'configuration'):
return get_configuration.configuration
configuration = shared.Configuration(environ=os.environ)
get_configuration.configuration = configuration
return configuration
STDERR_FILE = os.environ.get('EMCC_STDERR_FILE')
if STDERR_FILE:
STDERR_FILE = os.path.abspath(STDERR_FILE)
logging.info('logging stderr in js compiler phase into %s' % STDERR_FILE)
STDERR_FILE = open(STDERR_FILE, 'w')
def emscript(infile, settings, outfile, libraries=[], compiler_engine=None,
temp_files=None, DEBUG=None, DEBUG_CACHE=None):
"""Runs the emscripten LLVM-to-JS compiler.
Args:
infile: The path to the input LLVM assembly file.
settings: JSON-formatted settings that override the values
defined in src/settings.js.
outfile: The file where the output is written.
"""
assert settings['ASM_JS'], 'fastcomp is asm.js-only (mode 1 or 2)'
success = False
try:
# Overview:
# * Run LLVM backend to emit JS. JS includes function bodies, memory initializer,
# and various metadata
# * Run compiler.js on the metadata to emit the shell js code, pre/post-ambles,
# JS library dependencies, etc.
temp_js = temp_files.get('.4.js').name
backend_compiler = os.path.join(shared.LLVM_ROOT, 'llc')
backend_args = [backend_compiler, infile, '-march=js', '-filetype=asm', '-o', temp_js]
if settings['PRECISE_F32']:
backend_args += ['-emscripten-precise-f32']
if settings['USE_PTHREADS']:
backend_args += ['-emscripten-enable-pthreads']
if settings['WARN_UNALIGNED']:
backend_args += ['-emscripten-warn-unaligned']
if settings['RESERVED_FUNCTION_POINTERS'] > 0:
backend_args += ['-emscripten-reserved-function-pointers=%d' % settings['RESERVED_FUNCTION_POINTERS']]
if settings['ASSERTIONS'] > 0:
backend_args += ['-emscripten-assertions=%d' % settings['ASSERTIONS']]
if settings['ALIASING_FUNCTION_POINTERS'] == 0:
backend_args += ['-emscripten-no-aliasing-function-pointers']
if settings['EMULATED_FUNCTION_POINTERS']:
backend_args += ['-emscripten-emulated-function-pointers']
if settings['RELOCATABLE']:
backend_args += ['-emscripten-relocatable']
backend_args += ['-emscripten-global-base=0']
elif settings['GLOBAL_BASE'] >= 0:
backend_args += ['-emscripten-global-base=%d' % settings['GLOBAL_BASE']]
backend_args += ['-O' + str(settings['OPT_LEVEL'])]
if DEBUG:
logging.debug('emscript: llvm backend: ' + ' '.join(backend_args))
t = time.time()
shared.jsrun.timeout_run(subprocess.Popen(backend_args, stdout=subprocess.PIPE))
if DEBUG:
logging.debug(' emscript: llvm backend took %s seconds' % (time.time() - t))
t = time.time()
# Split up output
backend_output = open(temp_js).read()
#if DEBUG: print >> sys.stderr, backend_output
start_funcs_marker = '// EMSCRIPTEN_START_FUNCTIONS'
end_funcs_marker = '// EMSCRIPTEN_END_FUNCTIONS'
metadata_split_marker = '// EMSCRIPTEN_METADATA'
start_funcs = backend_output.index(start_funcs_marker)
end_funcs = backend_output.rindex(end_funcs_marker)
metadata_split = backend_output.rindex(metadata_split_marker)
funcs = backend_output[start_funcs+len(start_funcs_marker):end_funcs]
metadata_raw = backend_output[metadata_split+len(metadata_split_marker):]
#if DEBUG: print >> sys.stderr, "METAraw", metadata_raw
try:
metadata = json.loads(metadata_raw)
except Exception, e:
logging.error('emscript: failure to parse metadata output from compiler backend. raw output is: \n' + metadata_raw)
raise e
mem_init = backend_output[end_funcs+len(end_funcs_marker):metadata_split]
#if DEBUG: print >> sys.stderr, "FUNCS", funcs
#if DEBUG: print >> sys.stderr, "META", metadata
#if DEBUG: print >> sys.stderr, "meminit", mem_init
# if emulating pointer casts, force all tables to the size of the largest
if settings['EMULATE_FUNCTION_POINTER_CASTS']:
max_size = 0
for k, v in metadata['tables'].iteritems():
max_size = max(max_size, v.count(',')+1)
for k, v in metadata['tables'].iteritems():
curr = v.count(',')+1
if curr < max_size:
metadata['tables'][k] = v.replace(']', (',0'*(max_size - curr)) + ']')
if settings['SIDE_MODULE']:
for k in metadata['tables'].keys():
metadata['tables'][k] = metadata['tables'][k].replace('var FUNCTION_TABLE_', 'var SIDE_FUNCTION_TABLE_')
# function table masks
table_sizes = {}
for k, v in metadata['tables'].iteritems():
table_sizes[k] = str(v.count(',')) # undercounts by one, but that is what we want
#if settings['ASSERTIONS'] >= 2 and table_sizes[k] == 0:
# print >> sys.stderr, 'warning: no function pointers with signature ' + k + ', but there is a call, which will abort if it occurs (this can result from undefined behavior, check for compiler warnings on your source files and consider -Werror)'
funcs = re.sub(r"#FM_(\w+)#", lambda m: table_sizes[m.groups(0)[0]], funcs)
# fix +float into float.0, if not running js opts
if not settings['RUNNING_JS_OPTS']:
def fix_dot_zero(m):
num = m.group(3)
# TODO: handle 0x floats?
if num.find('.') < 0:
e = num.find('e');
if e < 0:
num += '.0'
else:
num = num[:e] + '.0' + num[e:]
return m.group(1) + m.group(2) + num
funcs = re.sub(r'([(=,+\-*/%<>:?] *)\+(-?)((0x)?[0-9a-f]*\.?[0-9]+([eE][-+]?[0-9]+)?)', lambda m: fix_dot_zero(m), funcs)
# js compiler
if DEBUG: logging.debug('emscript: js compiler glue')
# Settings changes
i64_funcs = ['i64Add', 'i64Subtract', '__muldi3', '__divdi3', '__udivdi3', '__remdi3', '__uremdi3']
for i64_func in i64_funcs:
if i64_func in metadata['declares']:
settings['PRECISE_I64_MATH'] = 2
break
metadata['declares'] = filter(lambda i64_func: i64_func not in ['getHigh32', 'setHigh32', '__muldi3', '__divdi3', '__remdi3', '__udivdi3', '__uremdi3'], metadata['declares']) # FIXME: do these one by one as normal js lib funcs
# Integrate info from backend
if settings['SIDE_MODULE']:
settings['DEFAULT_LIBRARY_FUNCS_TO_INCLUDE'] = [] # we don't need any JS library contents in side modules
settings['DEFAULT_LIBRARY_FUNCS_TO_INCLUDE'] = list(
set(settings['DEFAULT_LIBRARY_FUNCS_TO_INCLUDE'] + map(shared.JS.to_nice_ident, metadata['declares'])).difference(
map(lambda x: x[1:], metadata['implementedFunctions'])
)
) + map(lambda x: x[1:], metadata['externs'])
if metadata['simd']:
settings['SIMD'] = 1
if metadata['cantValidate'] and settings['ASM_JS'] != 2:
logging.warning('disabling asm.js validation due to use of non-supported features: ' + metadata['cantValidate'])
settings['ASM_JS'] = 2
settings['MAX_GLOBAL_ALIGN'] = metadata['maxGlobalAlign']
assert not (metadata['simd'] and settings['SPLIT_MEMORY']), 'SIMD is used, but not supported in SPLIT_MEMORY'
# Save settings to a file to work around v8 issue 1579
settings_file = temp_files.get('.txt').name
def save_settings():
global settings_text
settings_text = json.dumps(settings, sort_keys=True)
s = open(settings_file, 'w')
s.write(settings_text)
s.close()
save_settings()
# Call js compiler
if DEBUG: t = time.time()
out = jsrun.run_js(path_from_root('src', 'compiler.js'), compiler_engine,
[settings_file] + libraries, stdout=subprocess.PIPE, stderr=STDERR_FILE,
cwd=path_from_root('src'), error_limit=300)
assert '//FORWARDED_DATA:' in out, 'Did not receive forwarded data in pre output - process failed?'
glue, forwarded_data = out.split('//FORWARDED_DATA:')
if DEBUG:
logging.debug(' emscript: glue took %s seconds' % (time.time() - t))
t = time.time()
last_forwarded_json = forwarded_json = json.loads(forwarded_data)
# merge in information from llvm backend
last_forwarded_json['Functions']['tables'] = metadata['tables']
pre, post = glue.split('// EMSCRIPTEN_END_FUNCS')
#print >> sys.stderr, 'glue:', pre, '\n\n||||||||||||||||\n\n', post, '...............'
# memory and global initializers
global_initializers = str(', '.join(map(lambda i: '{ func: function() { %s() } }' % i, metadata['initializers'])))
if settings['SIMD'] == 1:
pre = open(path_from_root(os.path.join('src', 'ecmascript_simd.js'))).read() + '\n\n' + pre
staticbump = mem_init.count(',')+1
while staticbump % 16 != 0: staticbump += 1
pre = pre.replace('STATICTOP = STATIC_BASE + 0;', '''STATICTOP = STATIC_BASE + %d;%s
/* global initializers */ %s __ATINIT__.push(%s);
%s''' % (staticbump,
'assert(STATICTOP < SPLIT_MEMORY, "SPLIT_MEMORY size must be big enough so the entire static memory, need " + STATICTOP);' if settings['SPLIT_MEMORY'] else '',
'if (!ENVIRONMENT_IS_PTHREAD)' if settings['USE_PTHREADS'] else '',
global_initializers,
mem_init))
if settings['SIDE_MODULE']:
pre = pre.replace('Runtime.GLOBAL_BASE', 'gb').replace('{{{ STATIC_BUMP }}}', str(staticbump))
funcs_js = [funcs]
parts = pre.split('// ASM_LIBRARY FUNCTIONS\n')
if len(parts) > 1:
pre = parts[0]
funcs_js.append(parts[1])
# merge forwarded data
settings['EXPORTED_FUNCTIONS'] = forwarded_json['EXPORTED_FUNCTIONS']
all_exported_functions = set(shared.expand_response(settings['EXPORTED_FUNCTIONS'])) # both asm.js and otherwise
for additional_export in settings['DEFAULT_LIBRARY_FUNCS_TO_INCLUDE']: # additional functions to export from asm, if they are implemented
all_exported_functions.add('_' + additional_export)
if settings['EXPORT_FUNCTION_TABLES']:
for table in last_forwarded_json['Functions']['tables'].values():
for func in table.split('[')[1].split(']')[0].split(','):
if func[0] == '_':
all_exported_functions.add(func)
exported_implemented_functions = set(metadata['exports'])
export_bindings = settings['EXPORT_BINDINGS']
export_all = settings['EXPORT_ALL']
all_implemented = metadata['implementedFunctions'] + forwarded_json['Functions']['implementedFunctions'].keys() # XXX perf?
for key in all_implemented:
if key in all_exported_functions or export_all or (export_bindings and key.startswith('_emscripten_bind')):
exported_implemented_functions.add(key)
implemented_functions = set(metadata['implementedFunctions'])
if settings['ASSERTIONS'] and settings.get('ORIGINAL_EXPORTED_FUNCTIONS'):
original_exports = settings['ORIGINAL_EXPORTED_FUNCTIONS']
if original_exports[0] == '@': original_exports = json.loads(open(original_exports[1:]).read())
for requested in original_exports:
# check if already implemented
# special-case malloc, EXPORTED by default for internal use, but we bake in a trivial allocator and warn at runtime if used in ASSERTIONS \
if requested not in all_implemented and \
requested != '_malloc' and \
(('function ' + requested.encode('utf-8')) not in pre): # could be a js library func
logging.warning('function requested to be exported, but not implemented: "%s"', requested)
asm_consts = [0]*len(metadata['asmConsts'])
for k, v in metadata['asmConsts'].iteritems():
const = v.encode('utf-8')
if const[0] == '"' and const[-1] == '"':
const = const[1:-1]
const = '{ ' + const + ' }'
args = []
arity = max(metadata['asmConstArities'][k])
for i in range(arity):
args.append('$' + str(i))
const = 'function(' + ', '.join(args ) + ') ' + const
asm_consts[int(k)] = const
flatten_list_of_lists = lambda outer: (item for inner in outer for item in inner)
asm_const_funcs = []
for arity in set(flatten_list_of_lists(metadata['asmConstArities'].values())):
forwarded_json['Functions']['libraryFunctions']['_emscripten_asm_const_%d' % arity] = 1
args = ['a%d' % i for i in range(arity)]
all_args = ['code'] + args
asm_const_funcs.append(r'''
function _emscripten_asm_const_%d(%s) {
return ASM_CONSTS[code](%s);
}''' % (arity, ', '.join(all_args), ', '.join(args)))
pre = pre.replace('// === Body ===', '// === Body ===\n' + '\nvar ASM_CONSTS = [' + ',\n '.join(asm_consts) + '];\n' + '\n'.join(asm_const_funcs) + '\n')
#if DEBUG: outfile.write('// pre\n')
outfile.write(pre)
pre = None
#if DEBUG: outfile.write('// funcs\n')
# when emulating function pointer casts, we need to know what is the target of each pointer
if settings['EMULATE_FUNCTION_POINTER_CASTS']:
function_pointer_targets = {}
for sig, table in last_forwarded_json['Functions']['tables'].iteritems():
start = table.index('[')
end = table.rindex(']')
body = table[start+1:end].split(',')
parsed = map(lambda x: x.strip(), body)
for i in range(len(parsed)):
if parsed[i] != '0':
assert i not in function_pointer_targets
function_pointer_targets[i] = [sig, str(parsed[i])]
# Move preAsms to their right place
def move_preasm(m):
contents = m.groups(0)[0]
outfile.write(contents + '\n')
return ''
if not settings['BOOTSTRAPPING_STRUCT_INFO'] and len(funcs_js) > 1:
funcs_js[1] = re.sub(r'/\* PRE_ASM \*/(.*)\n', lambda m: move_preasm(m), funcs_js[1])
class Counter:
i = 0
j = 0
if 'pre' in last_forwarded_json['Functions']['tables']:
pre_tables = last_forwarded_json['Functions']['tables']['pre']
del last_forwarded_json['Functions']['tables']['pre']
else:
pre_tables = ''
def unfloat(s):
return 'd' if s == 'f' else s # lower float to double for ffis
if settings['ASSERTIONS'] >= 2:
debug_tables = {}
def make_params(sig): return ','.join(['p%d' % p for p in range(len(sig)-1)])
def make_coerced_params(sig): return ','.join([shared.JS.make_coercion('p%d', unfloat(sig[p+1]), settings) % p for p in range(len(sig)-1)])
def make_coercions(sig): return ';'.join(['p%d = %s' % (p, shared.JS.make_coercion('p%d' % p, sig[p+1], settings)) for p in range(len(sig)-1)]) + ';'
def make_func(name, code, params, coercions): return 'function %s(%s) {\n %s %s\n}' % (name, params, coercions, code)
in_table = set()
def make_table(sig, raw):
params = make_params(sig)
coerced_params = make_coerced_params(sig)
coercions = make_coercions(sig)
def make_bad(target=None):
i = Counter.i
Counter.i += 1
if target is None: target = i
name = 'b' + str(i)
if not settings['ASSERTIONS']:
code = 'abort(%s);' % target
else:
code = 'nullFunc_' + sig + '(%d);' % target
if sig[0] != 'v':
code += 'return %s' % shared.JS.make_initializer(sig[0], settings) + ';'
return name, make_func(name, code, params, coercions)
bad, bad_func = make_bad() # the default bad func
if settings['ASSERTIONS'] <= 1:
Counter.pre = [bad_func]
else:
Counter.pre = []
start = raw.index('[')
end = raw.rindex(']')
body = raw[start+1:end].split(',')
if settings['EMULATED_FUNCTION_POINTERS']:
def receive(item):
if item == '0':
return item
else:
if item in all_implemented:
in_table.add(item)
return "asm['" + item + "']"
else:
return item # this is not implemented; it would normally be wrapped, but with emulation, we just use it directly outside
body = map(receive, body)
for j in range(settings['RESERVED_FUNCTION_POINTERS']):
curr = 'jsCall_%s_%s' % (sig, j)
body[settings['FUNCTION_POINTER_ALIGNMENT'] * (1 + j)] = curr
implemented_functions.add(curr)
Counter.j = 0
def fix_item(item):
j = Counter.j
Counter.j += 1
newline = Counter.j % 30 == 29
if item == '0':
if j > 0 and settings['EMULATE_FUNCTION_POINTER_CASTS'] and j in function_pointer_targets: # emulate all non-null pointer calls, if asked to
proper_sig, proper_target = function_pointer_targets[j]
if settings['EMULATED_FUNCTION_POINTERS']:
if proper_target in all_implemented:
proper_target = "asm['" + proper_target + "']"
def make_emulated_param(i):
if i >= len(sig): return shared.JS.make_initializer(proper_sig[i], settings) # extra param, just send a zero
return shared.JS.make_coercion('p%d' % (i-1), proper_sig[i], settings, convert_from=sig[i])
proper_code = proper_target + '(' + ','.join(map(lambda i: make_emulated_param(i+1), range(len(proper_sig)-1))) + ')'
if proper_sig[0] != 'v':
# proper sig has a return, which the wrapper may or may not use
proper_code = shared.JS.make_coercion(proper_code, proper_sig[0], settings)
if proper_sig[0] != sig[0]:
# first coercion ensured we call the target ok; this one ensures we return the right type in the wrapper
proper_code = shared.JS.make_coercion(proper_code, sig[0], settings, convert_from=proper_sig[0])
if sig[0] != 'v':
proper_code = 'return ' + proper_code
else:
# proper sig has no return, we may need a fake return
if sig[0] != 'v':
proper_code = 'return ' + shared.JS.make_initializer(sig[0], settings)
name = 'fpemu_%s_%d' % (sig, j)
wrapper = make_func(name, proper_code, params, coercions)
Counter.pre.append(wrapper)
return name if not newline else (name + '\n')
if settings['ASSERTIONS'] <= 1:
return bad if not newline else (bad + '\n')
else:
specific_bad, specific_bad_func = make_bad(j)
Counter.pre.append(specific_bad_func)
return specific_bad if not newline else (specific_bad + '\n')
clean_item = item.replace("asm['", '').replace("']", '')
if clean_item not in implemented_functions and not (settings['EMULATED_FUNCTION_POINTERS'] and not settings['RELOCATABLE']): # when emulating function pointers, we don't need wrappers
# but if relocating, then we also have the copies in-module, and do
# this is imported into asm, we must wrap it
call_ident = clean_item
if call_ident in metadata['redirects']: call_ident = metadata['redirects'][call_ident]
if not call_ident.startswith('_') and not call_ident.startswith('Math_'): call_ident = '_' + call_ident
code = call_ident + '(' + coerced_params + ')'
if sig[0] != 'v':
# ffis cannot return float
if sig[0] == 'f': code = '+' + code
code = 'return ' + shared.JS.make_coercion(code, sig[0], settings)
code += ';'
Counter.pre.append(make_func(clean_item + '__wrapper', code, params, coercions))
return clean_item + '__wrapper'
return item if not newline else (item + '\n')
if settings['ASSERTIONS'] >= 2:
debug_tables[sig] = body
body = ','.join(map(fix_item, body))
return ('\n'.join(Counter.pre), ''.join([raw[:start+1], body, raw[end:]]))
infos = [make_table(sig, raw) for sig, raw in last_forwarded_json['Functions']['tables'].iteritems()]
Counter.pre = []
function_tables_defs = '\n'.join([info[0] for info in infos]) + '\n'
function_tables_defs += '\n// EMSCRIPTEN_END_FUNCS\n'
function_tables_defs += '\n'.join([info[1] for info in infos])
asm_setup = ''
if settings['ASSERTIONS'] >= 2:
for sig in last_forwarded_json['Functions']['tables']:
asm_setup += '\nvar debug_table_' + sig + ' = ' + json.dumps(debug_tables[sig]) + ';'
maths = ['Math.' + func for func in ['floor', 'abs', 'sqrt', 'pow', 'cos', 'sin', 'tan', 'acos', 'asin', 'atan', 'atan2', 'exp', 'log', 'ceil', 'imul', 'min', 'clz32']]
simdfloattypes = []
simdinttypes = []
simdfuncs = ['check', 'add', 'sub', 'neg', 'mul',
'equal', 'lessThan', 'greaterThan',
'notEqual', 'lessThanOrEqual', 'greaterThanOrEqual',
'select', 'and', 'or', 'xor', 'not',
'splat', 'swizzle', 'shuffle',
'load', 'store', 'load1', 'store1', 'load2', 'store2', 'load3', 'store3',
'extractLane', 'replaceLane']
if metadata['simdInt8x16']:
simdinttypes += ['Int8x16']
simdfuncs += ['fromInt8x16Bits']
if metadata['simdInt16x8']:
simdinttypes += ['Int16x8']
simdfuncs += ['fromInt16x8Bits']
if metadata['simdInt32x4']:
simdinttypes += ['Int32x4']
simdfuncs += ['fromInt32x4', 'fromInt32x4Bits']
if metadata['simdFloat32x4']:
simdfloattypes += ['Float32x4']
simdfuncs += ['fromFloat32x4', 'fromFloat32x4Bits']
if metadata['simdFloat64x2']:
simdfloattypes += ['Float64x2']
simdfuncs += ['fromFloat64x2', 'fromFloat64x2Bits']
simdfloatfuncs = simdfuncs + ['div', 'min', 'max', 'minNum', 'maxNum', 'sqrt',
'abs', 'reciprocalApproximation', 'reciprocalSqrtApproximation'];
simdintfuncs = simdfuncs + ['shiftRightArithmeticByScalar',
'shiftRightLogicalByScalar',
'shiftLeftByScalar'];
simdtypes = simdfloattypes + simdinttypes
fundamentals = ['Math']
fundamentals += ['Int8Array', 'Int16Array', 'Int32Array', 'Uint8Array', 'Uint16Array', 'Uint32Array', 'Float32Array', 'Float64Array']
fundamentals += ['NaN', 'Infinity']
if metadata['simd']:
fundamentals += ['SIMD']
if settings['ALLOW_MEMORY_GROWTH']: fundamentals.append('byteLength')
math_envs = []
provide_fround = settings['PRECISE_F32'] or settings['SIMD']
if provide_fround: maths += ['Math.fround']
def get_function_pointer_error(sig):
if settings['ASSERTIONS'] <= 1:
extra = ' Module["printErr"]("Build with ASSERTIONS=2 for more info.");'
pointer = ' '
else:
pointer = ' \'" + x + "\' '
extra = ' Module["printErr"]("This pointer might make sense in another type signature: '
# sort signatures, attempting to show most likely related ones first
sigs = last_forwarded_json['Functions']['tables'].keys()
def keyfunc(other):
ret = 0
minlen = min(len(other), len(sig))
maxlen = min(len(other), len(sig))
if other.startswith(sig) or sig.startswith(other): ret -= 1000 # prioritize prefixes, could be dropped params
ret -= 133*difflib.SequenceMatcher(a=other, b=sig).ratio() # prioritize on diff similarity
ret += 15*abs(len(other) - len(sig))/float(maxlen) # deprioritize the bigger the length difference is
for i in range(minlen):
if other[i] == sig[i]: ret -= 5/float(maxlen) # prioritize on identically-placed params
ret += 20*len(other) # deprioritize on length
return ret
sigs.sort(key=keyfunc)
for other in sigs:
if other != sig:
extra += other + ': " + debug_table_' + other + '[x] + " '
extra += '"); '
return 'Module["printErr"]("Invalid function pointer' + pointer + 'called with signature \'' + sig + '\'. ' + \
'Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? ' + \
'Or calling a function with an incorrect type, which will fail? ' + \
'(it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)' + \
'"); ' + extra
basic_funcs = ['abort', 'assert'] + [m.replace('.', '_') for m in math_envs]
asm_safe_heap = settings['SAFE_HEAP'] and not settings['SAFE_HEAP_LOG'] and not settings['RELOCATABLE'] # optimized safe heap in asm, when we can
if settings['SAFE_HEAP']:
if asm_safe_heap:
basic_funcs += ['segfault', 'alignfault', 'ftfault']
else:
basic_funcs += ['SAFE_HEAP_LOAD', 'SAFE_HEAP_LOAD_D', 'SAFE_HEAP_STORE', 'SAFE_HEAP_STORE_D', 'SAFE_FT_MASK']
if settings['ASSERTIONS']:
if settings['ASSERTIONS'] >= 2: import difflib
for sig in last_forwarded_json['Functions']['tables'].iterkeys():
basic_funcs += ['nullFunc_' + sig]
asm_setup += '\nfunction nullFunc_' + sig + '(x) { ' + get_function_pointer_error(sig) + 'abort(x) }\n'
basic_vars = ['STACKTOP', 'STACK_MAX', 'tempDoublePtr', 'ABORT']
basic_float_vars = []
if settings['SAFE_HEAP']: basic_vars += ['DYNAMICTOP']
if metadata.get('preciseI64MathUsed'):
basic_vars += ['cttz_i8']
else:
if forwarded_json['Functions']['libraryFunctions'].get('_llvm_cttz_i32'):
basic_vars += ['cttz_i8']
if settings['RELOCATABLE']:
basic_vars += ['gb', 'fb']
if not settings['SIDE_MODULE']:
asm_setup += 'var gb = Runtime.GLOBAL_BASE, fb = 0;\n'
asm_runtime_funcs = ['stackAlloc', 'stackSave', 'stackRestore', 'establishStackSpace', 'setThrew']
if not settings['RELOCATABLE']:
asm_runtime_funcs += ['setTempRet0', 'getTempRet0']
else:
basic_funcs += ['setTempRet0', 'getTempRet0']
asm_setup += 'var setTempRet0 = Runtime.setTempRet0, getTempRet0 = Runtime.getTempRet0;\n'
# See if we need ASYNCIFY functions
# We might not need them even if ASYNCIFY is enabled
need_asyncify = '_emscripten_alloc_async_context' in exported_implemented_functions
if need_asyncify:
basic_vars += ['___async', '___async_unwind', '___async_retval', '___async_cur_frame']
asm_runtime_funcs += ['setAsync']
if settings.get('EMTERPRETIFY'):
asm_runtime_funcs += ['emterpret']
if settings.get('EMTERPRETIFY_ASYNC'):
asm_runtime_funcs += ['setAsyncState', 'emtStackSave', 'emtStackRestore']
if settings['SAFE_HEAP']:
asm_runtime_funcs += ['setDynamicTop']
# function tables
if not settings['EMULATED_FUNCTION_POINTERS']:
function_tables = ['dynCall_' + table for table in last_forwarded_json['Functions']['tables']]
else:
function_tables = []
function_tables_impls = []
for sig in last_forwarded_json['Functions']['tables'].iterkeys():
args = ','.join(['a' + str(i) for i in range(1, len(sig))])
arg_coercions = ' '.join(['a' + str(i) + '=' + shared.JS.make_coercion('a' + str(i), sig[i], settings) + ';' for i in range(1, len(sig))])
coerced_args = ','.join([shared.JS.make_coercion('a' + str(i), sig[i], settings) for i in range(1, len(sig))])
ret = ('return ' if sig[0] != 'v' else '') + shared.JS.make_coercion('FUNCTION_TABLE_%s[index&{{{ FTM_%s }}}](%s)' % (sig, sig, coerced_args), sig[0], settings)
if not settings['EMULATED_FUNCTION_POINTERS']:
function_tables_impls.append('''
function dynCall_%s(index%s%s) {
index = index|0;
%s
%s;
}
''' % (sig, ',' if len(sig) > 1 else '', args, arg_coercions, ret))
else:
function_tables_impls.append('''
var dynCall_%s = ftCall_%s;
''' % (sig, sig))
ffi_args = ','.join([shared.JS.make_coercion('a' + str(i), sig[i], settings, ffi_arg=True) for i in range(1, len(sig))])
for i in range(settings['RESERVED_FUNCTION_POINTERS']):
jsret = ('return ' if sig[0] != 'v' else '') + shared.JS.make_coercion('jsCall_%s(%d%s%s)' % (sig, i, ',' if ffi_args else '', ffi_args), sig[0], settings, ffi_result=True)
function_tables_impls.append('''
function jsCall_%s_%s(%s) {
%s
%s;
}
''' % (sig, i, args, arg_coercions, jsret))
shared.Settings.copy(settings)
asm_setup += '\n' + shared.JS.make_invoke(sig) + '\n'
basic_funcs.append('invoke_%s' % sig)
if settings.get('RESERVED_FUNCTION_POINTERS'):
asm_setup += '\n' + shared.JS.make_jscall(sig) + '\n'
basic_funcs.append('jsCall_%s' % sig)
if settings.get('EMULATED_FUNCTION_POINTERS'):
args = ['a%d' % i for i in range(len(sig)-1)]
full_args = ['x'] + args
table_access = 'FUNCTION_TABLE_' + sig
if settings['SIDE_MODULE']:
table_access = 'parentModule["' + table_access + '"]' # side module tables were merged into the parent, we need to access the global one
prelude = '''
if (x < 0 || x >= %s.length) { Module.printErr("Function table mask error (out of range)"); %s ; abort(x) }''' % (table_access, get_function_pointer_error(sig))
asm_setup += '''
function ftCall_%s(%s) {%s
return %s[x](%s);
}
''' % (sig, ', '.join(full_args), prelude, table_access, ', '.join(args))
basic_funcs.append('ftCall_%s' % sig)
if settings.get('RELOCATABLE'):
params = ','.join(['ptr'] + ['p%d' % p for p in range(len(sig)-1)])
coerced_params = ','.join([shared.JS.make_coercion('ptr', 'i', settings)] + [shared.JS.make_coercion('p%d', unfloat(sig[p+1]), settings) % p for p in range(len(sig)-1)])
coercions = ';'.join(['ptr = ptr | 0'] + ['p%d = %s' % (p, shared.JS.make_coercion('p%d' % p, unfloat(sig[p+1]), settings)) for p in range(len(sig)-1)]) + ';'
mini_coerced_params = ','.join([shared.JS.make_coercion('p%d', sig[p+1], settings) % p for p in range(len(sig)-1)])
maybe_return = '' if sig[0] == 'v' else 'return'
final_return = maybe_return + ' ' + shared.JS.make_coercion('ftCall_' + sig + '(' + coerced_params + ')', unfloat(sig[0]), settings) + ';'
if settings['EMULATED_FUNCTION_POINTERS'] == 1:
body = final_return
else:
body = 'if (((ptr|0) >= (fb|0)) & ((ptr|0) < (fb + {{{ FTM_' + sig + ' }}} | 0))) { ' + maybe_return + ' ' + shared.JS.make_coercion('FUNCTION_TABLE_' + sig + '[(ptr-fb)&{{{ FTM_' + sig + ' }}}](' + mini_coerced_params + ')', sig[0], settings, ffi_arg=True) + '; ' + ('return;' if sig[0] == 'v' else '') + ' }' + final_return
funcs_js.append(make_func('mftCall_' + sig, body, params, coercions) + '\n')
def quote(prop):
if settings['USE_CLOSURE_COMPILER'] == 2:
return "'" + prop + "'"
else:
return prop
def access_quote(prop):
if settings['USE_CLOSURE_COMPILER'] == 2:
return "['" + prop + "']"
else:
return '.' + prop
# calculate exports
exported_implemented_functions = list(exported_implemented_functions) + metadata['initializers']
exported_implemented_functions.append('runPostSets')
if settings['ALLOW_MEMORY_GROWTH']:
exported_implemented_functions.append('_emscripten_replace_memory')
all_exported = exported_implemented_functions + asm_runtime_funcs + function_tables
exported_implemented_functions = list(set(exported_implemented_functions))
if settings['EMULATED_FUNCTION_POINTERS']:
all_exported = list(set(all_exported).union(in_table))
exports = []
for export in all_exported:
exports.append(quote(export) + ": " + export)
exports = '{ ' + ', '.join(exports) + ' }'
# calculate globals
try:
del forwarded_json['Variables']['globals']['_llvm_global_ctors'] # not a true variable
except:
pass
if not settings['RELOCATABLE']:
global_vars = metadata['externs']
else:
global_vars = [] # linkable code accesses globals through function calls
global_funcs = list(set([key for key, value in forwarded_json['Functions']['libraryFunctions'].iteritems() if value != 2]).difference(set(global_vars)).difference(implemented_functions))
if settings['RELOCATABLE']:
global_funcs += ['g$' + extern for extern in metadata['externs']]
side = 'parent' if settings['SIDE_MODULE'] else ''
def check(extern):
if settings['ASSERTIONS']: return 'assert(' + side + 'Module["' + extern + '"], "external function \'' + extern + '\' is missing. perhaps a side module was not linked in? if this symbol was expected to arrive from a system library, try to build the MAIN_MODULE with EMCC_FORCE_STDLIBS=1 in the environment");'
return ''
for extern in metadata['externs']:
asm_setup += 'var g$' + extern + ' = function() { ' + check(extern) + ' return ' + side + 'Module["' + extern + '"] };\n'
def math_fix(g):
return g if not g.startswith('Math_') else g.split('_')[1]
asm_global_funcs = ''.join([' var ' + g.replace('.', '_') + '=global' + access_quote(g) + ';\n' for g in maths]);
asm_global_funcs += ''.join([' var ' + g + '=env' + access_quote(math_fix(g)) + ';\n' for g in basic_funcs + global_funcs])
if metadata['simd']:
def string_contains_any(s, str_list):
for sub in str_list:
if sub in s:
return True
return False
nonexisting_simd_symbols = ['Int32x4_fromInt32x4', 'Float32x4_fromFloat32x4']
asm_global_funcs += ''.join([' var SIMD_' + ty + '=global' + access_quote('SIMD') + access_quote(ty) + ';\n' for ty in simdtypes])
simd_int_symbols = [' var SIMD_' + ty + '_' + g + '=SIMD_' + ty + access_quote(g) + ';\n' for ty in simdinttypes for g in simdintfuncs]
simd_int_symbols = filter(lambda x: not string_contains_any(x, nonexisting_simd_symbols), simd_int_symbols)
asm_global_funcs += ''.join(simd_int_symbols)
simd_float_symbols = [' var SIMD_' + ty + '_' + g + '=SIMD_' + ty + access_quote(g) + ';\n' for ty in simdfloattypes for g in simdfloatfuncs]
simd_float_symbols = filter(lambda x: not string_contains_any(x, nonexisting_simd_symbols), simd_float_symbols)
asm_global_funcs += ''.join(simd_float_symbols)
# Unofficial, Bool64x2 does not yet exist, but needed for Float64x2 comparisons.
if metadata['simdFloat64x2']:
asm_global_funcs += ' var SIMD_Int32x4_fromBool64x2Bits = global.SIMD.Int32x4.fromBool64x2Bits;\n';
if settings['USE_PTHREADS']:
# asm_global_funcs += ''.join([' var Atomics_' + ty + '=global' + access_quote('Atomics') + access_quote(ty) + ';\n' for ty in ['load', 'store', 'exchange', 'compareExchange', 'add', 'sub', 'and', 'or', 'xor', 'fence']])
# TODO: Once bug https://bugzilla.mozilla.org/show_bug.cgi?id=1141986 is implemented, replace the following line with the above one!
asm_global_funcs += ''.join([' var Atomics_' + ty + '=global' + access_quote('Atomics') + access_quote(ty) + ';\n' for ty in ['load', 'store', 'compareExchange', 'add', 'sub', 'and', 'or', 'xor', 'fence']])
asm_global_vars = ''.join([' var ' + g + '=env' + access_quote(g) + '|0;\n' for g in basic_vars + global_vars])
# sent data
the_global = '{ ' + ', '.join(['"' + math_fix(s) + '": ' + s for s in fundamentals]) + ' }'
sending = '{ ' + ', '.join(['"' + math_fix(s) + '": ' + s for s in basic_funcs + global_funcs + basic_vars + basic_float_vars + global_vars]) + ' }'
# received
receiving = ''
if settings['ASSERTIONS']:
# assert on the runtime being in a valid state when calling into compiled code. The only exceptions are
# some support code
receiving = '\n'.join(['var real_' + s + ' = asm["' + s + '"]; asm["' + s + '''"] = function() {
assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
return real_''' + s + '''.apply(null, arguments);
};
''' for s in exported_implemented_functions if s not in ['_memcpy', '_memset', 'runPostSets', '_emscripten_replace_memory']])
if not settings['SWAPPABLE_ASM_MODULE']:
receiving += ';\n'.join(['var ' + s + ' = Module["' + s + '"] = asm["' + s + '"]' for s in exported_implemented_functions + function_tables])
else:
receiving += 'Module["asm"] = asm;\n' + ';\n'.join(['var ' + s + ' = Module["' + s + '"] = function() { return Module["asm"]["' + s + '"].apply(null, arguments) }' for s in exported_implemented_functions + function_tables])
receiving += ';\n'
if settings['EXPORT_FUNCTION_TABLES']:
for table in last_forwarded_json['Functions']['tables'].values():
tableName = table.split()[1]
table = table.replace('var ' + tableName, 'var ' + tableName + ' = Module["' + tableName + '"]')
receiving += table + '\n'
# finalize
if DEBUG: logging.debug('asm text sizes' + str([map(len, funcs_js), len(asm_setup), len(asm_global_vars), len(asm_global_funcs), len(pre_tables), len('\n'.join(function_tables_impls)), len(function_tables_defs.replace('\n', '\n ')), len(exports), len(the_global), len(sending), len(receiving)]))
final_function_tables = '\n'.join(function_tables_impls) + '\n' + function_tables_defs
if settings.get('EMULATED_FUNCTION_POINTERS'):
asm_setup += '\n' + '\n'.join(function_tables_impls) + '\n'
receiving += '\n' + function_tables_defs.replace('// EMSCRIPTEN_END_FUNCS\n', '') + '\n' + ''.join(['Module["dynCall_%s"] = dynCall_%s\n' % (sig, sig) for sig in last_forwarded_json['Functions']['tables']])
for sig in last_forwarded_json['Functions']['tables'].keys():
name = 'FUNCTION_TABLE_' + sig
fullname = name if not settings['SIDE_MODULE'] else ('SIDE_' + name)
receiving += 'Module["' + name + '"] = ' + fullname + ';\n'
final_function_tables = final_function_tables.replace("asm['", '').replace("']", '').replace('var SIDE_FUNCTION_TABLE_', 'var FUNCTION_TABLE_').replace('var dynCall_', '//')
if settings['RELOCATABLE']:
receiving += '''
var NAMED_GLOBALS = { %s };
for (var named in NAMED_GLOBALS) {
Module['_' + named] = gb + NAMED_GLOBALS[named];
}
Module['NAMED_GLOBALS'] = NAMED_GLOBALS;
''' % ', '.join('"' + k + '": ' + str(v) for k, v in metadata['namedGlobals'].iteritems())
receiving += ''.join(["Module['%s'] = Module['%s']\n" % (k, v) for k, v in metadata['aliases'].iteritems()])
if settings['USE_PTHREADS']:
shared_array_buffer = '''if (typeof SharedArrayBuffer !== 'undefined') Module.asmGlobalArg['Atomics'] = Atomics;
if (typeof SharedInt8Array !== 'undefined') Module.asmGlobalArg['SharedInt8Array'] = SharedInt8Array;
if (typeof SharedInt16Array !== 'undefined') Module.asmGlobalArg['SharedInt16Array'] = SharedInt16Array;
if (typeof SharedInt32Array !== 'undefined') Module.asmGlobalArg['SharedInt32Array'] = SharedInt32Array;
if (typeof SharedUint8Array !== 'undefined') Module.asmGlobalArg['SharedUint8Array'] = SharedUint8Array;
if (typeof SharedUint16Array !== 'undefined') Module.asmGlobalArg['SharedUint16Array'] = SharedUint16Array;
if (typeof SharedUint32Array !== 'undefined') Module.asmGlobalArg['SharedUint32Array'] = SharedUint32Array;
if (typeof SharedFloat32Array !== 'undefined') Module.asmGlobalArg['SharedFloat32Array'] = SharedFloat32Array;
if (typeof SharedFloat64Array !== 'undefined') Module.asmGlobalArg['SharedFloat64Array'] = SharedFloat64Array;
'''
else:
shared_array_buffer = ''
first_in_asm = ''
if settings['SPLIT_MEMORY']:
if not settings['SAFE_SPLIT_MEMORY']:
first_in_asm += '''
function get8(ptr) {
ptr = ptr | 0;
return HEAP8s[ptr >> SPLIT_MEMORY_BITS][ptr & SPLIT_MEMORY_MASK] | 0;
}
function get16(ptr) {
ptr = ptr | 0;
return HEAP16s[ptr >> SPLIT_MEMORY_BITS][(ptr & SPLIT_MEMORY_MASK) >> 1] | 0;
}
function get32(ptr) {
ptr = ptr | 0;
return HEAP32s[ptr >> SPLIT_MEMORY_BITS][(ptr & SPLIT_MEMORY_MASK) >> 2] | 0;
}
function getU8(ptr) {
ptr = ptr | 0;
return HEAPU8s[ptr >> SPLIT_MEMORY_BITS][(ptr & SPLIT_MEMORY_MASK) >> 0] | 0;
}
function getU16(ptr) {
ptr = ptr | 0;
return HEAPU16s[ptr >> SPLIT_MEMORY_BITS][(ptr & SPLIT_MEMORY_MASK) >> 1] | 0;
}
function getU32(ptr) {
ptr = ptr | 0;
return HEAPU32s[ptr >> SPLIT_MEMORY_BITS][(ptr & SPLIT_MEMORY_MASK) >> 2] | 0;
}
function getF32(ptr) {
ptr = ptr | 0;
return +HEAPF32s[ptr >> SPLIT_MEMORY_BITS][(ptr & SPLIT_MEMORY_MASK) >> 2]; // TODO: fround when present
}
function getF64(ptr) {
ptr = ptr | 0;
return +HEAPF64s[ptr >> SPLIT_MEMORY_BITS][(ptr & SPLIT_MEMORY_MASK) >> 3];
}
function set8(ptr, value) {
ptr = ptr | 0;
value = value | 0;
HEAP8s[ptr >> SPLIT_MEMORY_BITS][ptr & SPLIT_MEMORY_MASK] = value;
}
function set16(ptr, value) {
ptr = ptr | 0;
value = value | 0;
HEAP16s[ptr >> SPLIT_MEMORY_BITS][(ptr & SPLIT_MEMORY_MASK) >> 1] = value;
}
function set32(ptr, value) {
ptr = ptr | 0;
value = value | 0;
HEAP32s[ptr >> SPLIT_MEMORY_BITS][(ptr & SPLIT_MEMORY_MASK) >> 2] = value;
}
function setU8(ptr, value) {
ptr = ptr | 0;
value = value | 0;
HEAPU8s[ptr >> SPLIT_MEMORY_BITS][(ptr & SPLIT_MEMORY_MASK) >> 0] = value;
}
function setU16(ptr, value) {
ptr = ptr | 0;
value = value | 0;
HEAPU16s[ptr >> SPLIT_MEMORY_BITS][(ptr & SPLIT_MEMORY_MASK) >> 1] = value;
}
function setU32(ptr, value) {
ptr = ptr | 0;
value = value | 0;
HEAPU32s[ptr >> SPLIT_MEMORY_BITS][(ptr & SPLIT_MEMORY_MASK) >> 2] = value;
}
function setF32(ptr, value) {
ptr = ptr | 0;
value = +value;
HEAPF32s[ptr >> SPLIT_MEMORY_BITS][(ptr & SPLIT_MEMORY_MASK) >> 2] = value;
}
function setF64(ptr, value) {
ptr = ptr | 0;
value = +value;
HEAPF64s[ptr >> SPLIT_MEMORY_BITS][(ptr & SPLIT_MEMORY_MASK) >> 3] = value;
}
'''
first_in_asm += 'buffer = new ArrayBuffer(32); // fake\n'
funcs_js = ['''
%s
Module%s = %s;
%s
Module%s = %s;
// EMSCRIPTEN_START_ASM
var asm = (function(global, env, buffer) {
%s
%s
%s
''' % (asm_setup,
access_quote('asmGlobalArg'), the_global,
shared_array_buffer,
access_quote('asmLibraryArg'), sending,
"'use asm';" if not metadata.get('hasInlineJS') and settings['ASM_JS'] == 1 else "'almost asm';",
first_in_asm,
'''
var HEAP8 = new global%s(buffer);
var HEAP16 = new global%s(buffer);
var HEAP32 = new global%s(buffer);
var HEAPU8 = new global%s(buffer);
var HEAPU16 = new global%s(buffer);
var HEAPU32 = new global%s(buffer);
var HEAPF32 = new global%s(buffer);
var HEAPF64 = new global%s(buffer);
''' % (access_quote('SharedInt8Array' if settings['USE_PTHREADS'] else 'Int8Array'),
access_quote('SharedInt16Array' if settings['USE_PTHREADS'] else 'Int16Array'),
access_quote('SharedInt32Array' if settings['USE_PTHREADS'] else 'Int32Array'),
access_quote('SharedUint8Array' if settings['USE_PTHREADS'] else 'Uint8Array'),
access_quote('SharedUint16Array' if settings['USE_PTHREADS'] else 'Uint16Array'),
access_quote('SharedUint32Array' if settings['USE_PTHREADS'] else 'Uint32Array'),
access_quote('SharedFloat32Array' if settings['USE_PTHREADS'] else 'Float32Array'),
access_quote('SharedFloat64Array' if settings['USE_PTHREADS'] else 'Float64Array'))
if not settings['ALLOW_MEMORY_GROWTH'] else '''
var Int8View = global%s;
var Int16View = global%s;
var Int32View = global%s;
var Uint8View = global%s;
var Uint16View = global%s;
var Uint32View = global%s;
var Float32View = global%s;
var Float64View = global%s;
var HEAP8 = new Int8View(buffer);
var HEAP16 = new Int16View(buffer);
var HEAP32 = new Int32View(buffer);
var HEAPU8 = new Uint8View(buffer);
var HEAPU16 = new Uint16View(buffer);
var HEAPU32 = new Uint32View(buffer);
var HEAPF32 = new Float32View(buffer);
var HEAPF64 = new Float64View(buffer);
var byteLength = global.byteLength;
''' % (access_quote('Int8Array'),
access_quote('Int16Array'),
access_quote('Int32Array'),
access_quote('Uint8Array'),
access_quote('Uint16Array'),
access_quote('Uint32Array'),
access_quote('Float32Array'),
access_quote('Float64Array'))) + '\n' + asm_global_vars + ('''
var __THREW__ = 0;
var threwValue = 0;
var setjmpId = 0;
var undef = 0;
var nan = global%s, inf = global%s;
var tempInt = 0, tempBigInt = 0, tempBigIntP = 0, tempBigIntS = 0, tempBigIntR = 0.0, tempBigIntI = 0, tempBigIntD = 0, tempValue = 0, tempDouble = 0.0;
''' % (access_quote('NaN'), access_quote('Infinity'))) + ''.join(['''
var tempRet%d = 0;''' % i for i in range(10)]) + '\n' + asm_global_funcs] + \
[' var tempFloat = %s;\n' % ('Math_fround(0)' if provide_fround else '0.0')] + \
[' var asyncState = 0;\n' if settings.get('EMTERPRETIFY_ASYNC') else ''] + \
([' const f0 = Math_fround(0);\n'] if provide_fround else []) + \
['' if not settings['ALLOW_MEMORY_GROWTH'] else '''
function _emscripten_replace_memory(newBuffer) {
if ((byteLength(newBuffer) & 0xffffff || byteLength(newBuffer) <= 0xffffff) || byteLength(newBuffer) > 0x80000000) return false;
HEAP8 = new Int8View(newBuffer);
HEAP16 = new Int16View(newBuffer);
HEAP32 = new Int32View(newBuffer);
HEAPU8 = new Uint8View(newBuffer);
HEAPU16 = new Uint16View(newBuffer);
HEAPU32 = new Uint32View(newBuffer);
HEAPF32 = new Float32View(newBuffer);
HEAPF64 = new Float64View(newBuffer);
buffer = newBuffer;
return true;
}
'''] + ['''
// EMSCRIPTEN_START_FUNCS
function stackAlloc(size) {
size = size|0;
var ret = 0;
ret = STACKTOP;
STACKTOP = (STACKTOP + size)|0;
STACKTOP = (STACKTOP + 15)&-16;
''' + ('if ((STACKTOP|0) >= (STACK_MAX|0)) abort();\n' if settings['ASSERTIONS'] else '') + '''
return ret|0;
}
function stackSave() {
return STACKTOP|0;
}
function stackRestore(top) {
top = top|0;
STACKTOP = top;
}
function establishStackSpace(stackBase, stackMax) {
stackBase = stackBase|0;
stackMax = stackMax|0;
STACKTOP = stackBase;
STACK_MAX = stackMax;
}
''' + ('''
function setAsync() {
___async = 1;
}''' if need_asyncify else '') + ('''
function emterpret(pc) { // this will be replaced when the emterpreter code is generated; adding it here allows validation until then
pc = pc | 0;
assert(0);
}
''' if settings['EMTERPRETIFY'] else '') + ('''
function setAsyncState(x) {
x = x | 0;
asyncState = x;
}
function emtStackSave() {
return EMTSTACKTOP|0;
}