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
|
'''
Processes an LLVM assembly (.ll) file, adding debugging information.
You can then run the .ll file in the LLVM interpreter (lli) and
compare that to the output when compiled using emscripten.
Warning: You probably want to compile with SKIP_STACK_IN_SMALL=0! Otherwise
there may be weird errors.
'''
import os, sys, re
ALLOW_POINTERS = False
ALLOW_MISC = True
MEMCPY = False
MEMCPY2 = False
NO_DLMALLOC = True
POSTAMBLE = '''
@.emscripten.autodebug.str = private constant [10 x i8] c"AD:%d,%d\\0A\\00", align 1 ; [#uses=1]
@.emscripten.autodebug.str.f = private constant [11 x i8] c"AD:%d,%lf\\0A\\00", align 1 ; [#uses=1]
@.emscripten.autodebug.str.64 = private constant [13 x i8] c"AD:%d,%d,%d\\0A\\00", align 1 ; [#uses=1]
; [#uses=1]
define void @emscripten_autodebug_i64(i32 %line, i64 %value) {
entry:
%0 = trunc i64 %value to i32
%1 = lshr i64 %value, 32
%2 = trunc i64 %1 to i32
%3 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([13 x i8]* @.emscripten.autodebug.str.64, i32 0, i32 0), i32 %line, i32 %0, i32 %2) ; [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
; [#uses=1]
define void @emscripten_autodebug_i32(i32 %line, i32 %value) {
entry:
%0 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([10 x i8]* @.emscripten.autodebug.str, i32 0, i32 0), i32 %line, i32 %value) ; [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
; [#uses=1]
define void @emscripten_autodebug_i16(i32 %line, i16 %value) {
entry:
%0 = zext i16 %value to i32 ; [#uses=1]
%1 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([10 x i8]* @.emscripten.autodebug.str, i32 0, i32 0), i32 %line, i32 %0) ; [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
; [#uses=1]
define void @emscripten_autodebug_i8(i32 %line, i8 %value) {
entry:
%0 = zext i8 %value to i32 ; [#uses=1]
%1 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([10 x i8]* @.emscripten.autodebug.str, i32 0, i32 0), i32 %line, i32 %0) ; [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
; [#uses=1]
define void @emscripten_autodebug_float(i32 %line, float %value) {
entry:
%0 = fpext float %value to double ; [#uses=1]
%1 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([11 x i8]* @.emscripten.autodebug.str.f, i32 0, i32 0), i32 %line, double %0) ; [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
; [#uses=1]
define void @emscripten_autodebug_double(i32 %line, double %value) {
entry:
%0 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([11 x i8]* @.emscripten.autodebug.str.f, i32 0, i32 0), i32 %line, double %value) ; [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
'''
POSTAMBLE_NEW = '''
@.emscripten.autodebug.str = private constant [10 x i8] c"AD:%d,%d\\0A\\00", align 1 ; [#uses=1]
@.emscripten.autodebug.str.2 = private constant [13 x i8] c"AD:%d,%d,%d\\0A\\00", align 1 ; [#uses=1]
@.emscripten.autodebug.str.f = private constant [11 x i8] c"AD:%d,%lf\\0A\\00", align 1 ; [#uses=1]
; [#uses=1]
define void @emscripten_autodebug_i64(i32 %line, i64 %value) {
%1 = trunc i64 %value to i32
%2 = lshr i64 %value, 32
%3 = trunc i64 %2 to i32
%4 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([13 x i8]* @.emscripten.autodebug.str.2, i32 0, i32 0), i32 %line, i32 %1, i32 %3) ; [#uses=0]
ret void
}
; [#uses=1]
define void @emscripten_autodebug_i32(i32 %line, i32 %value) {
%1 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([10 x i8]* @.emscripten.autodebug.str, i32 0, i32 0), i32 %line, i32 %value) ; [#uses=0]
ret void
}
; [#uses=1]
define void @emscripten_autodebug_i16(i32 %line, i16 %value) {
%1 = zext i16 %value to i32 ; [#uses=1]
%2 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([10 x i8]* @.emscripten.autodebug.str, i32 0, i32 0), i32 %line, i32 %1) ; [#uses=0]
ret void
}
; [#uses=1]
define void @emscripten_autodebug_i8(i32 %line, i8 %value) {
%1 = zext i8 %value to i32 ; [#uses=1]
%2 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([10 x i8]* @.emscripten.autodebug.str, i32 0, i32 0), i32 %line, i32 %1) ; [#uses=0]
ret void
}
; [#uses=1]
define void @emscripten_autodebug_float(i32 %line, float %value) {
%1 = fpext float %value to double ; [#uses=1]
%2 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([11 x i8]* @.emscripten.autodebug.str.f, i32 0, i32 0), i32 %line, double %1) ; [#uses=0]
ret void
}
; [#uses=1]
define void @emscripten_autodebug_double(i32 %line, double %value) {
%1 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([11 x i8]* @.emscripten.autodebug.str.f, i32 0, i32 0), i32 %line, double %value) ; [#uses=0]
ret void
}
'''
filename, ofilename = sys.argv[1], sys.argv[2]
f = open(filename, 'r')
data = f.read()
f.close()
if 'declare i32 @printf(' not in data:
POSTAMBLE += '''
; [#uses=1]
declare i32 @printf(i8*, ...)
'''
POSTAMBLE_NEW += '''
; [#uses=1]
declare i32 @printf(i8*, ...)
'''
LLVM_STYLE_OLD = '<label>' not in data and 'entry:' in data
if not LLVM_STYLE_OLD:
POSTAMBLE = POSTAMBLE_NEW
if MEMCPY:
POSTAMBLE = '''
@.emscripten.memcpy.str = private constant [7 x i8] c"MC:%d\\0A\\00", align 1 ; [#uses=1]
''' + POSTAMBLE + '''
; [#uses=1]
define void @emscripten_memcpy(i8* %destination, i8* %source, i32 %num, i32 %whati, i1 %sthis) nounwind {
entry:
%destination.addr = alloca i8*, align 4 ; [#uses=3]
%source.addr = alloca i8*, align 4 ; [#uses=2]
%num.addr = alloca i32, align 4 ; [#uses=3]
%i = alloca i32, align 4 ; [#uses=5]
%src = alloca i8*, align 4 ; [#uses=5]
%dst = alloca i8*, align 4 ; [#uses=4]
store i8* %destination, i8** %destination.addr, align 4
store i8* %source, i8** %source.addr, align 4
store i32 %num, i32* %num.addr, align 4
%tmp = load i8** %source.addr, align 4 ; [#uses=1]
store i8* %tmp, i8** %src, align 4
%tmp2 = load i8** %destination.addr, align 4 ; [#uses=1]
store i8* %tmp2, i8** %dst, align 4
store i32 0, i32* %i, align 4
%tmp31 = load i32* %i, align 4 ; [#uses=1]
%tmp42 = load i32* %num.addr, align 4 ; [#uses=1]
%cmp3 = icmp ult i32 %tmp31, %tmp42 ; [#uses=1]
br i1 %cmp3, label %for.body, label %for.end
for.body: ; preds = %for.body, %entry
%tmp5 = load i8** %src, align 4 ; [#uses=1]
%tmp6 = load i8* %tmp5 ; [#uses=1]
%conv = zext i8 %tmp6 to i32 ; [#uses=1]
%call = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([7 x i8]* @.emscripten.memcpy.str, i32 0, i32 0), i32 %conv); [#uses=0]
%tmp7 = load i8** %src, align 4 ; [#uses=1]
%tmp8 = load i8* %tmp7 ; [#uses=1]
%tmp9 = load i8** %dst, align 4 ; [#uses=1]
store i8 %tmp8, i8* %tmp9
%tmp10 = load i32* %i, align 4 ; [#uses=1]
%inc = add i32 %tmp10, 1 ; [#uses=1]
store i32 %inc, i32* %i, align 4
%tmp11 = load i8** %src, align 4 ; [#uses=1]
%incdec.ptr = getelementptr inbounds i8* %tmp11, i32 1 ; [#uses=1]
store i8* %incdec.ptr, i8** %src, align 4
%tmp12 = load i8** %dst, align 4 ; [#uses=1]
%incdec.ptr13 = getelementptr inbounds i8* %tmp12, i32 1 ; [#uses=1]
store i8* %incdec.ptr13, i8** %dst, align 4
%tmp3 = load i32* %i, align 4 ; [#uses=1]
%tmp4 = load i32* %num.addr, align 4 ; [#uses=1]
%cmp = icmp ult i32 %tmp3, %tmp4 ; [#uses=1]
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
%tmp14 = load i8** %destination.addr, align 4 ; [#uses=1]
ret void
}
'''
lines_added = 0
lines = data.split('\n')
in_func = False
added_entry = False
for i in range(len(lines)):
if MEMCPY:
if not lines[i].startswith('declare void'):
lines[i] = lines[i].replace('@llvm.memcpy.p0i8.p0i8.i32', '@emscripten_memcpy')
try:
pre = ''
if lines[i].startswith('define '):
in_func = True
if NO_DLMALLOC and ('@malloc(' in lines[i] or '@free(' in lines[i] or '@sys_alloc(' in lines[i] or '@segment_holding(' in lines[i] or '@init_top(' in lines[i] or '@add_segment(' in lines[i] or '@tmalloc_small(' in lines[i]):
in_func = False
if in_func:
added_entry = False
elif lines[i].startswith('}'):
in_func = False
elif in_func and not added_entry and ' = alloca' not in lines[i] and lines[i].startswith(' '):
# This is a good place to mark entry to this function
added_entry = True
index = i+1+lines_added
pre = ' call void @emscripten_autodebug_i32(i32 -1, i32 %d)' % index
elif in_func and lines[i].startswith(' ret '):
# This is a good place to mark entry to this function
index = i+1+lines_added
pre = ' call void @emscripten_autodebug_i32(i32 -2, i32 %d)' % index
if in_func:
m = re.match(' store (?P<type>i64|i32|i16|i8|float|double|%?[\w\.\*]+) (?P<var>%?[\w.+_]+), .*', lines[i])
if m:
index = i+1+lines_added
if m.group('type') in ['i8', 'i16', 'i32', 'i64', 'float', 'double']:
lines[i] += '\n call void @emscripten_autodebug_%s(i32 %d, %s %s)' % (m.group('type'), index, m.group('type'), m.group('var'))
lines_added += 1
elif ALLOW_POINTERS and m.group('type').endswith('*') and m.group('type').count('*') == 1:
lines[i] += '\n %%ead.%d = ptrtoint %s %s to i32' % (index, m.group('type'), m.group('var'))
lines[i] += '\n call void @emscripten_autodebug_i32(i32 %d, i32 %%ead.%d)' % (index, index)
lines_added += 2
continue
m = re.match(' %(?P<var>[\w_.]+) = load (?P<type>i64|i32|i16|i8|float|double+)\* [^(].*.*', lines[i])
if m:
index = i+1+lines_added
lines[i] += '\n call void @emscripten_autodebug_%s(i32 %d, %s %%%s)' % (m.group('type'), index, m.group('type'), m.group('var'))
lines_added += 1
continue
if ALLOW_MISC:
# call is risky - return values can be i32 (i8*) (i16)
m = re.match(' %(?P<var>[\w_.]+) = (mul|add) (nsw )?(?P<type>i64|i32|i16|i8|float|double+) .*', lines[i])
if m:
index = i+1+lines_added
lines[i] += '\n call void @emscripten_autodebug_%s(i32 %d, %s %%%s)' % (m.group('type'), index, m.group('type'), m.group('var'))
lines_added += 1
continue
if MEMCPY2:
m = re.match(' call void @llvm\.memcpy\.p0i8\.p0i8\.i32\(i8\* %(?P<dst>[\w_.]+), i8\* %(?P<src>[\w_.]+), i32 8, i32 (?P<align>\d+),.*', lines[i])
if m:
index = i+1+lines_added
lines[i] += '\n %%adtemp%d = load i8* %%%s, align 1' % (index, m.group('src')) + \
'\n call void @emscripten_autodebug_i8(i32 %d, i8 %%adtemp%d)' % (index, index)
lines_added += 3
continue
finally:
if len(pre) > 0:
lines[i] = pre + '\n' + lines[i]
lines_added += 1
f = open(ofilename, 'w')
f.write('\n'.join(lines) + '\n' + POSTAMBLE + '\n')
f.close()
print 'Success.'
|
