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
|
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include "common.h"
#include "vm.h"
#include "test.h"
#include "weewasm.h"
#include "illegal.h"
#include "ir.h"
#include "disass.h"
#define OUT(...) fprintf(stdout, __VA_ARGS__)
// Returns the string name of a section code.
const char* section_name(byte code) {
switch (code) {
case WASM_SECT_TYPE: return "type";
case WASM_SECT_IMPORT: return "import";
case WASM_SECT_FUNCTION: return "function";
case WASM_SECT_TABLE: return "table";
case WASM_SECT_MEMORY: return "memory";
case WASM_SECT_GLOBAL: return "global";
case WASM_SECT_EXPORT: return "export";
case WASM_SECT_START: return "start";
case WASM_SECT_ELEMENT: return "element";
case WASM_SECT_CODE: return "code";
case WASM_SECT_DATA: return "data";
case 0: return "custom";
default:
return "unknown";
}
}
// Returns a constant that represents the type code.
const char* type_name(uint32_t code) {
switch (code) {
case WASM_TYPE_I32: return "i32";
case WASM_TYPE_I64: return "<!illegal i64>";
case WASM_TYPE_F32: return "<!illegal f32>";
case WASM_TYPE_F64: return "f64";
case WASM_TYPE_V128: return "<!illegal v128>";
case WASM_TYPE_EXTERNREF: return "externref";
case WASM_TYPE_FUNCREF: return "funcref";
default: return "<!unknown type>";
}
}
// Returns a constant that represents a type declaration code.
const char* type_decl_name(uint32_t code) {
if (code == 0x60) return "sig";
else return "<!unknown type decl>";
}
// Returns the name of an import kind.
const char* import_kind_name(uint32_t code) {
switch (code) {
case WASM_IMPORT_FUNC: return "func";
case WASM_IMPORT_TABLE: return "table";
case WASM_IMPORT_MEMORY: return "memory";
case WASM_IMPORT_GLOBAL: return "global";
default: return "<!unknown import kind>";
}
}
// Prints data as hexadecimal.
void print_data(buffer_t* buf, uint32_t count) {
OUT("\n");
for (uint32_t i = 0; i < count && buf->ptr < buf->end; i++) {
byte b = read_u8(buf);
OUT(" %02X", b);
if (i % 16 == 15) OUT("\n");
}
OUT("\n");
}
// Metadata for disassembling bytecode.
typedef struct {
const char* mnemonic;
int immkind;
int illegal;
} opcode_imm_t;
#define IMM_NONE 0
#define IMM_BLOCKT 1
#define IMM_LABEL 2
#define IMM_LABELS 3
#define IMM_FUNC 4
#define IMM_SIG_TABLE 5
#define IMM_LOCAL 6
#define IMM_GLOBAL 7
#define IMM_TABLE 8
#define IMM_MEMARG 9
#define IMM_I32 10
#define IMM_F64 11
#define IMM_MEMORY 12
#define IMM_TAG 13
#define IMM_I64 14
#define IMM_F32 15
#define IMM_REFNULLT 16
#define IMM_VALTS 17
#define IMM_PCDELTA 18
#define IMM_PCDELTAS 19
opcode_imm_t opcode_imm_table[256] = {
[WASM_OP_UNREACHABLE] = {"unreachable" },
[WASM_OP_NOP] = {"nop" },
[WASM_OP_BLOCK] = {"block", IMM_BLOCKT },
[WASM_OP_LOOP] = {"loop", IMM_BLOCKT },
[WASM_OP_IF] = {"if", IMM_BLOCKT },
[WASM_OP_ELSE] = {"else" },
[WASM_OP_END] = {"end" },
[WASM_OP_BR] = {"br", IMM_LABEL },
[WASM_OP_BR_IF] = {"br_if", IMM_LABEL },
[WASM_OP_BR_TABLE] = {"br_table", IMM_LABELS },
[WASM_OP_RETURN] = {"return" },
[WASM_OP_CALL] = {"call", IMM_FUNC },
[WASM_OP_CALL_INDIRECT] = {"call_indirect", IMM_SIG_TABLE },
[WASM_OP_DROP] = {"drop" },
[WASM_OP_SELECT] = {"select" },
[WASM_OP_LOCAL_GET] = {"local.get", IMM_LOCAL },
[WASM_OP_LOCAL_SET] = {"local.set", IMM_LOCAL },
[WASM_OP_LOCAL_TEE] = {"local.tee", IMM_LOCAL },
[WASM_OP_GLOBAL_GET] = {"global.get", IMM_GLOBAL },
[WASM_OP_GLOBAL_SET] = {"global.set", IMM_GLOBAL },
[WASM_OP_TABLE_GET] = {"table.get", IMM_TABLE },
[WASM_OP_TABLE_SET] = {"table.set", IMM_TABLE },
[WASM_OP_I32_LOAD] = {"i32.load", IMM_MEMARG },
[WASM_OP_F64_LOAD] = {"f64.load", IMM_MEMARG },
[WASM_OP_I32_LOAD8_S] = {"i32.load8_s", IMM_MEMARG },
[WASM_OP_I32_LOAD8_U] = {"i32.load8_u", IMM_MEMARG },
[WASM_OP_I32_LOAD16_S] = {"i32.load16_s", IMM_MEMARG },
[WASM_OP_I32_LOAD16_U] = {"i32.load16_u", IMM_MEMARG },
[WASM_OP_I32_STORE] = {"i32.store", IMM_MEMARG },
[WASM_OP_F64_STORE] = {"f64.store", IMM_MEMARG },
[WASM_OP_I32_STORE8] = {"i32.store8", IMM_MEMARG },
[WASM_OP_I32_STORE16] = {"i32.store16", IMM_MEMARG },
[WASM_OP_I32_CONST] = {"i32.const", IMM_I32 },
[WASM_OP_F64_CONST] = {"f64.const", IMM_F64 },
[WASM_OP_I32_EQZ] = {"i32.eqz" },
[WASM_OP_I32_EQ] = {"i32.eq" },
[WASM_OP_I32_NE] = {"i32.ne" },
[WASM_OP_I32_LT_S] = {"i32.lt_s" },
[WASM_OP_I32_LT_U] = {"i32.lt_u" },
[WASM_OP_I32_GT_S] = {"i32.gt_s" },
[WASM_OP_I32_GT_U] = {"i32.gt_u" },
[WASM_OP_I32_LE_S] = {"i32.le_s" },
[WASM_OP_I32_LE_U] = {"i32.le_u" },
[WASM_OP_I32_GE_S] = {"i32.ge_s" },
[WASM_OP_I32_GE_U] = {"i32.ge_u" },
[WASM_OP_F64_EQ] = {"f64.eq" },
[WASM_OP_F64_NE] = {"f64.ne" },
[WASM_OP_F64_LT] = {"f64.lt" },
[WASM_OP_F64_GT] = {"f64.gt" },
[WASM_OP_F64_LE] = {"f64.le" },
[WASM_OP_F64_GE] = {"f64.ge" },
[WASM_OP_I32_CLZ] = {"i32.clz" },
[WASM_OP_I32_CTZ] = {"i32.ctz" },
[WASM_OP_I32_POPCNT] = {"i32.popcnt" },
[WASM_OP_I32_ADD] = {"i32.add" },
[WASM_OP_I32_SUB] = {"i32.sub" },
[WASM_OP_I32_MUL] = {"i32.mul" },
[WASM_OP_I32_DIV_S] = {"i32.div_s" },
[WASM_OP_I32_DIV_U] = {"i32.div_u" },
[WASM_OP_I32_REM_S] = {"i32.rem_s" },
[WASM_OP_I32_REM_U] = {"i32.rem_u" },
[WASM_OP_I32_AND] = {"i32.and" },
[WASM_OP_I32_OR] = {"i32.or" },
[WASM_OP_I32_XOR] = {"i32.xor" },
[WASM_OP_I32_SHL] = {"i32.shl" },
[WASM_OP_I32_SHR_S] = {"i32.shr_s" },
[WASM_OP_I32_SHR_U] = {"i32.shr_u" },
[WASM_OP_I32_ROTL] = {"i32.rotl" },
[WASM_OP_I32_ROTR] = {"i32.rotr" },
[WASM_OP_F64_ADD] = {"f64.add" },
[WASM_OP_F64_SUB] = {"f64.sub" },
[WASM_OP_F64_MUL] = {"f64.mul" },
[WASM_OP_F64_DIV] = {"f64.div" },
[WASM_OP_I32_TRUNC_F64_S] = {"i32.trunc_f64_s" },
[WASM_OP_I32_TRUNC_F64_U] = {"i32.trunc_f64_u" },
[WASM_OP_F64_CONVERT_I32_S] = {"f64.convert_i32_s" },
[WASM_OP_F64_CONVERT_I32_U] = {"f64.convert_i32_u" },
[WASM_OP_I32_EXTEND8_S] = {"i32.extend8_s" },
[WASM_OP_I32_EXTEND16_S] = {"i32.extend16_s" },
[WASM_OP_JMP] = {"jmp", IMM_PCDELTA },
[WASM_OP_JMP_IF] = {"jmp_if", IMM_PCDELTA },
[WASM_OP_JMP_TABLE] = {"jmp_table", IMM_PCDELTAS },
// illegal bytecodes
[WASM_OP_TRY] = {"try", IMM_BLOCKT, -1},
[WASM_OP_CATCH] = {"catch", IMM_TAG, -1},
[WASM_OP_THROW] = {"throw", IMM_TAG, -1},
[WASM_OP_RETHROW] = {"rethrow", IMM_NONE, -1},
[WASM_OP_RETURN_CALL] = {"return_call", IMM_FUNC, -1},
[WASM_OP_RETURN_CALL_INDIRECT]= {"return_call_indirect", IMM_SIG_TABLE, -1},
[WASM_OP_CALL_REF] = {"call_ref", IMM_NONE, -1},
[WASM_OP_RETURN_CALL_REF] = {"return_call_ref", IMM_NONE, -1},
[WASM_OP_DELEGATE] = {"delegate", IMM_NONE, -1},
[WASM_OP_CATCH_ALL] = {"catch_all", IMM_NONE, -1},
[WASM_OP_SELECT_T] = {"select", IMM_VALTS, -1},
[WASM_OP_I64_LOAD] = {"i64.load", IMM_MEMARG, -1},
[WASM_OP_F32_LOAD] = {"f32.load", IMM_MEMARG, -1},
[WASM_OP_I64_LOAD8_S] = {"i64.load8_s", IMM_MEMARG, -1},
[WASM_OP_I64_LOAD8_U] = {"i64.load8_u", IMM_MEMARG, -1},
[WASM_OP_I64_LOAD16_S] = {"i64.load16_s", IMM_MEMARG, -1},
[WASM_OP_I64_LOAD16_U] = {"i64.load16_u", IMM_MEMARG, -1},
[WASM_OP_I64_LOAD32_S] = {"i64.load32_s", IMM_MEMARG, -1},
[WASM_OP_I64_LOAD32_U] = {"i64.load32_u", IMM_MEMARG, -1},
[WASM_OP_I64_STORE] = {"i64.store", IMM_MEMARG, -1},
[WASM_OP_F32_STORE] = {"f32.store", IMM_MEMARG, -1},
[WASM_OP_I64_STORE8] = {"i64.store8", IMM_MEMARG, -1},
[WASM_OP_I64_STORE16] = {"i64.store16", IMM_MEMARG, -1},
[WASM_OP_I64_STORE32] = {"i64.store32", IMM_MEMARG, -1},
[WASM_OP_MEMORY_SIZE] = {"memory.size", IMM_MEMORY, -1},
[WASM_OP_MEMORY_GROW] = {"memory.grow", IMM_MEMORY, -1},
[WASM_OP_I64_CONST] = {"i64.const", IMM_I64, -1},
[WASM_OP_F32_CONST] = {"f32.const", IMM_F32, -1},
[WASM_OP_I64_EQZ] = {"i64.eqz", IMM_NONE, -1},
[WASM_OP_I64_EQ] = {"i64.eq", IMM_NONE, -1},
[WASM_OP_I64_NE] = {"i64.ne", IMM_NONE, -1},
[WASM_OP_I64_LT_S] = {"i64.lt_s", IMM_NONE, -1},
[WASM_OP_I64_LT_U] = {"i64.lt_u", IMM_NONE, -1},
[WASM_OP_I64_GT_S] = {"i64.gt_s", IMM_NONE, -1},
[WASM_OP_I64_GT_U] = {"i64.gt_u", IMM_NONE, -1},
[WASM_OP_I64_LE_S] = {"i64.le_s", IMM_NONE, -1},
[WASM_OP_I64_LE_U] = {"i64.le_u", IMM_NONE, -1},
[WASM_OP_I64_GE_S] = {"i64.ge_s", IMM_NONE, -1},
[WASM_OP_I64_GE_U] = {"i64.ge_u", IMM_NONE, -1},
[WASM_OP_F32_EQ] = {"f32.eq", IMM_NONE, -1},
[WASM_OP_F32_NE] = {"f32.ne", IMM_NONE, -1},
[WASM_OP_F32_LT] = {"f32.lt", IMM_NONE, -1},
[WASM_OP_F32_GT] = {"f32.gt", IMM_NONE, -1},
[WASM_OP_F32_LE] = {"f32.le", IMM_NONE, -1},
[WASM_OP_F32_GE] = {"f32.ge", IMM_NONE, -1},
[WASM_OP_I64_CLZ] = {"i64.clz", IMM_NONE, -1},
[WASM_OP_I64_CTZ] = {"i64.ctz", IMM_NONE, -1},
[WASM_OP_I64_POPCNT] = {"i64.popcnt", IMM_NONE, -1},
[WASM_OP_I64_ADD] = {"i64.add", IMM_NONE, -1},
[WASM_OP_I64_SUB] = {"i64.sub", IMM_NONE, -1},
[WASM_OP_I64_MUL] = {"i64.mul", IMM_NONE, -1},
[WASM_OP_I64_DIV_S] = {"i64.div_s", IMM_NONE, -1},
[WASM_OP_I64_DIV_U] = {"i64.div_u", IMM_NONE, -1},
[WASM_OP_I64_REM_S] = {"i64.rem_s", IMM_NONE, -1},
[WASM_OP_I64_REM_U] = {"i64.rem_u", IMM_NONE, -1},
[WASM_OP_I64_AND] = {"i64.and", IMM_NONE, -1},
[WASM_OP_I64_OR] = {"i64.or", IMM_NONE, -1},
[WASM_OP_I64_XOR] = {"i64.xor", IMM_NONE, -1},
[WASM_OP_I64_SHL] = {"i64.shl", IMM_NONE, -1},
[WASM_OP_I64_SHR_S] = {"i64.shr_s", IMM_NONE, -1},
[WASM_OP_I64_SHR_U] = {"i64.shr_u", IMM_NONE, -1},
[WASM_OP_I64_ROTL] = {"i64.rotl", IMM_NONE, -1},
[WASM_OP_I64_ROTR] = {"i64.rotr", IMM_NONE, -1},
[WASM_OP_F32_ABS] = {"f32.abs", IMM_NONE, -1},
[WASM_OP_F32_NEG] = {"f32.neg", IMM_NONE, -1},
[WASM_OP_F32_CEIL] = {"f32.ceil", IMM_NONE, -1},
[WASM_OP_F32_FLOOR] = {"f32.floor", IMM_NONE, -1},
[WASM_OP_F32_TRUNC] = {"f32.trunc", IMM_NONE, -1},
[WASM_OP_F32_NEAREST] = {"f32.nearest", IMM_NONE, -1},
[WASM_OP_F32_SQRT] = {"f32.sqrt", IMM_NONE, -1},
[WASM_OP_F32_ADD] = {"f32.add", IMM_NONE, -1},
[WASM_OP_F32_SUB] = {"f32.sub", IMM_NONE, -1},
[WASM_OP_F32_MUL] = {"f32.mul", IMM_NONE, -1},
[WASM_OP_F32_DIV] = {"f32.div", IMM_NONE, -1},
[WASM_OP_F32_MIN] = {"f32.min", IMM_NONE, -1},
[WASM_OP_F32_MAX] = {"f32.max", IMM_NONE, -1},
[WASM_OP_F32_COPYSIGN] = {"f32.copysign", IMM_NONE, -1},
[WASM_OP_F64_ABS] = {"f64.abs", IMM_NONE, -1},
[WASM_OP_F64_NEG] = {"f64.neg", IMM_NONE, -1},
[WASM_OP_F64_CEIL] = {"f64.ceil", IMM_NONE, -1},
[WASM_OP_F64_FLOOR] = {"f64.floor", IMM_NONE, -1},
[WASM_OP_F64_TRUNC] = {"f64.trunc", IMM_NONE, -1},
[WASM_OP_F64_NEAREST] = {"f64.nearest", IMM_NONE, -1},
[WASM_OP_F64_SQRT] = {"f64.sqrt", IMM_NONE, -1},
[WASM_OP_F64_MIN] = {"f64.min", IMM_NONE, -1},
[WASM_OP_F64_MAX] = {"f64.max", IMM_NONE, -1},
[WASM_OP_F64_COPYSIGN] = {"f64.copysign", IMM_NONE, -1},
[WASM_OP_I32_WRAP_I64] = {"i32.wrap_i64", IMM_NONE, -1},
[WASM_OP_I32_TRUNC_F32_S] = {"i32.trunc_f32_s", IMM_NONE, -1},
[WASM_OP_I32_TRUNC_F32_U] = {"i32.trunc_f32_u", IMM_NONE, -1},
[WASM_OP_I64_EXTEND_I32_S] = {"i64.extend_i32_s", IMM_NONE, -1},
[WASM_OP_I64_EXTEND_I32_U] = {"i64.extend_i32_u", IMM_NONE, -1},
[WASM_OP_I64_TRUNC_F32_S] = {"i64.trunc_f32_s", IMM_NONE, -1},
[WASM_OP_I64_TRUNC_F32_U] = {"i64.trunc_f32_u", IMM_NONE, -1},
[WASM_OP_I64_TRUNC_F64_S] = {"i64.trunc_f64_s", IMM_NONE, -1},
[WASM_OP_I64_TRUNC_F64_U] = {"i64.trunc_f64_u", IMM_NONE, -1},
[WASM_OP_F32_CONVERT_I32_S] = {"f32.convert_i32_s", IMM_NONE, -1},
[WASM_OP_F32_CONVERT_I32_U] = {"f32.convert_i32_u", IMM_NONE, -1},
[WASM_OP_F32_CONVERT_I64_S] = {"f32.convert_i64_s", IMM_NONE, -1},
[WASM_OP_F32_CONVERT_I64_U] = {"f32.convert_i64_u", IMM_NONE, -1},
[WASM_OP_F64_CONVERT_I64_S] = {"f64.convert_i64_s" , IMM_NONE, -1},
[WASM_OP_F64_CONVERT_I64_U] = {"f64.convert_i64_u" , IMM_NONE, -1},
[WASM_OP_F32_DEMOTE_F64] = {"f32.demote_f64", IMM_NONE, -1},
[WASM_OP_F64_PROMOTE_F32] = {"f64.promote_f32", IMM_NONE, -1},
[WASM_OP_I32_REINTERPRET_F32] = {"i32.reinterpret_f32", IMM_NONE, -1},
[WASM_OP_I64_REINTERPRET_F64] = {"i64.reinterpret_f64", IMM_NONE, -1},
[WASM_OP_F32_REINTERPRET_I32] = {"f32.reinterpret_i32", IMM_NONE, -1},
[WASM_OP_F64_REINTERPRET_I64] = {"f64.reinterpret_i64", IMM_NONE, -1},
[WASM_OP_I64_EXTEND8_S] = {"i64.extend8_s", IMM_NONE, -1},
[WASM_OP_I64_EXTEND16_S] = {"i64.extend16_s", IMM_NONE, -1},
[WASM_OP_I64_EXTEND32_S] = {"i64.extend32_s", IMM_NONE, -1},
[WASM_OP_REF_NULL] = {"ref.null", IMM_REFNULLT, -1},
[WASM_OP_REF_IS_NULL] = {"ref.is_null", IMM_NONE, -1},
[WASM_OP_REF_FUNC] = {"ref.func", IMM_FUNC, -1},
[WASM_OP_REF_AS_NON_NULL] = {"ref.as_non_null", IMM_NONE, -1},
[WASM_OP_BR_ON_NULL] = {"br_on_null", IMM_LABEL, -1},
[WASM_OP_REF_EQ] = {"ref.eq", IMM_NONE, -1},
[WASM_OP_BR_ON_NON_NULL] = {"br_on_non_null", IMM_LABEL, -1},
};
#define PRINT(...) do { if(print) fprintf(stdout, __VA_ARGS__); } while(0)
const char* bytecode_name(byte code) {
opcode_imm_t* entry = &opcode_imm_table[code];
if (entry->mnemonic == NULL) return "<unknown>";
return entry->mnemonic;
}
void do_bytecode(int print, buffer_t* buf) {
for (int i = 0; i < g_indent; i++) PRINT(" ");
byte code = read_u8(buf);
opcode_imm_t* entry = &opcode_imm_table[code];
if (entry->mnemonic == NULL) {
PRINT("<!illegal bytecode %02X>", code);
} else if (entry->illegal) {
PRINT("<!illegal %s>", entry->mnemonic);
} else {
PRINT("%s", entry->mnemonic);
}
switch (entry->immkind) {
case IMM_LABEL: // fallthru
case IMM_FUNC: // fallthru
case IMM_LOCAL: // fallthru
case IMM_GLOBAL: // fallthru
case IMM_MEMORY: // fallthru
case IMM_TAG: // fallthru
case IMM_REFNULLT:
case IMM_TABLE: {
uint32_t imm = read_u32leb(buf);
PRINT(" %u", imm);
break;
}
case IMM_NONE: break;
case IMM_BLOCKT: {
int32_t imm = read_i32leb(buf);
if (imm != -64) {
PRINT(" <!illegal blocktype %d>", imm);
}
break;
}
case IMM_LABELS: {
uint32_t count = read_u32leb(buf);
PRINT(" %u", count);
for (uint32_t i = 0; i <= count && buf->ptr < buf->end; i++) {
uint32_t lbl = read_u32leb(buf);
PRINT(" %u", lbl);
}
break;
}
case IMM_SIG_TABLE: {
uint32_t sig = read_u32leb(buf);
PRINT(" %d", sig);
uint32_t tbl = read_u32leb(buf);
if (tbl != 0) {
PRINT(" <!illegal table %d>", tbl);
}
break;
}
case IMM_MEMARG: {
byte b = read_u8(buf);
uint32_t offset = read_u32leb(buf);
PRINT(" %u", offset);
break;
}
case IMM_I32: {
int32_t imm = read_i32leb(buf);
PRINT(" %d", imm);
break;
}
case IMM_F64: {
if (buf->end - buf->ptr >= 8) {
uint64_t val = *((uint64_t*)buf->ptr);
PRINT(" %016" PRIx64, val);
buf->ptr += 8;
} else {
PRINT(" <!invalid f64>");
}
break;
}
case IMM_I64: {
ssize_t leblen = 0;
if (buf->ptr >= buf->end) break;
int64_t imm = decode_i64leb(buf->ptr, buf->end, &leblen);
if (leblen <= 0) buf->ptr = buf->end; // force failure
else buf->ptr += leblen;
PRINT(" %" PRId64 "", imm);
break;
}
case IMM_F32: {
for (int i = 0; i < 4; i++) {
byte b = read_u8(buf);
PRINT(" %02X", b);
}
break;
}
case IMM_VALTS: {
int32_t tcode = read_i32leb(buf);
PRINT(" %s", type_name(tcode));
break;
}
default: break;
}
PRINT("\n");
}
void skip_bytecode(buffer_t* buf) {
do_bytecode(0, buf);
}
void print_bytecode(buffer_t* buf) {
do_bytecode(1, buf);
}
void skip_local_decls(buffer_t* buf) {
uint32_t cnt = read_u32leb(buf);
for (uint32_t i = 0; i < cnt; i++) {
uint32_t cnt = read_u32leb(buf);
int32_t type = read_i32leb(buf);
}
}
|
