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
|
/* -----------------------------------------------------------------------------
* Bytecode disassembler
*
* Copyright (c) 1994-2002.
*
* $RCSfile: Disassembler.c,v $
* $Revision: 1.29 $
* $Date: 2004/09/03 15:28:19 $
* ---------------------------------------------------------------------------*/
#if defined(DEBUG)
#include "PosixSource.h"
#include "Rts.h"
#include "RtsAPI.h"
#include "rts/Bytecodes.h"
#include "RtsUtils.h"
#include "Schedule.h"
#include "Printer.h"
#include "Disassembler.h"
#include "Interpreter.h"
/* --------------------------------------------------------------------------
* Disassembler
* ------------------------------------------------------------------------*/
int
disInstr ( StgBCO *bco, int pc )
{
int i;
StgWord16 instr;
StgWord16* instrs = (StgWord16*)(bco->instrs->payload);
StgArrBytes* literal_arr = bco->literals;
StgWord* literals = (StgWord*)(&literal_arr->payload[0]);
StgMutArrPtrs* ptrs_arr = bco->ptrs;
StgPtr* ptrs = (StgPtr*)(&ptrs_arr->payload[0]);
instr = instrs[pc++];
if (instr & bci_FLAG_LARGE_ARGS) {
debugBelch ("LARGE ");
}
#define BCO_NEXT instrs[pc++]
#define BCO_NEXT_32 (pc += 2)
#define BCO_READ_NEXT_32 (BCO_NEXT_32, (((StgWord) instrs[pc-2]) << 16) \
+ ( (StgWord) instrs[pc-1]))
#define BCO_NEXT_64 (pc += 4)
#define BCO_READ_NEXT_64 (BCO_NEXT_64, (((StgWord) instrs[pc-4]) << 48) \
+ (((StgWord) instrs[pc-3]) << 32) \
+ (((StgWord) instrs[pc-2]) << 16) \
+ ( (StgWord) instrs[pc-1]))
#if WORD_SIZE_IN_BITS == 32
#define BCO_NEXT_WORD BCO_NEXT_32
#define BCO_READ_NEXT_WORD BCO_READ_NEXT_32
#elif WORD_SIZE_IN_BITS == 64
#define BCO_NEXT_WORD BCO_NEXT_64
#define BCO_READ_NEXT_WORD BCO_READ_NEXT_64
#else
#error Cannot cope with WORD_SIZE_IN_BITS being nether 32 nor 64
#endif
#define BCO_GET_LARGE_ARG ((instr & bci_FLAG_LARGE_ARGS) ? BCO_READ_NEXT_WORD : BCO_NEXT)
switch (instr & 0xff) {
case bci_BRK_FUN:
debugBelch ("BRK_FUN " ); printPtr( ptrs[instrs[pc]] );
debugBelch (" %d ", instrs[pc+1]); printPtr( ptrs[instrs[pc+2]] );
CostCentre* cc = (CostCentre*)literals[instrs[pc+3]];
if (cc) {
debugBelch(" %s", cc->label);
}
debugBelch("\n");
pc += 4;
break;
case bci_SWIZZLE:
debugBelch("SWIZZLE stkoff %d by %d\n",
instrs[pc], (signed int)instrs[pc+1]);
pc += 2; break;
case bci_CCALL:
debugBelch("CCALL marshaller at 0x%" FMT_HexWord "\n",
literals[instrs[pc]] );
pc += 1; break;
case bci_STKCHECK: {
StgWord stk_words_reqd = BCO_GET_LARGE_ARG + 1;
debugBelch("STKCHECK %" FMT_Word "\n", (W_)stk_words_reqd );
break;
}
case bci_PUSH_L:
debugBelch("PUSH_L %d\n", instrs[pc] );
pc += 1; break;
case bci_PUSH_LL:
debugBelch("PUSH_LL %d %d\n", instrs[pc], instrs[pc+1] );
pc += 2; break;
case bci_PUSH_LLL:
debugBelch("PUSH_LLL %d %d %d\n", instrs[pc], instrs[pc+1],
instrs[pc+2] );
pc += 3; break;
case bci_PUSH8:
debugBelch("PUSH8 %d\n", instrs[pc] );
pc += 1; break;
case bci_PUSH16:
debugBelch("PUSH16 %d\n", instrs[pc] );
pc += 1; break;
case bci_PUSH32:
debugBelch("PUSH32 %d\n", instrs[pc] );
pc += 1; break;
case bci_PUSH8_W:
debugBelch("PUSH8_W %d\n", instrs[pc] );
pc += 1; break;
case bci_PUSH16_W:
debugBelch("PUSH16_W %d\n", instrs[pc] );
pc += 1; break;
case bci_PUSH32_W:
debugBelch("PUSH32_W %d\n", instrs[pc] );
pc += 1; break;
case bci_PUSH_G:
debugBelch("PUSH_G " ); printPtr( ptrs[instrs[pc]] );
debugBelch("\n" );
pc += 1; break;
case bci_PUSH_ALTS:
debugBelch("PUSH_ALTS " ); printPtr( ptrs[instrs[pc]] );
debugBelch("\n");
pc += 1; break;
case bci_PUSH_ALTS_P:
debugBelch("PUSH_ALTS_P " ); printPtr( ptrs[instrs[pc]] );
debugBelch("\n");
pc += 1; break;
case bci_PUSH_ALTS_N:
debugBelch("PUSH_ALTS_N " ); printPtr( ptrs[instrs[pc]] );
debugBelch("\n");
pc += 1; break;
case bci_PUSH_ALTS_F:
debugBelch("PUSH_ALTS_F " ); printPtr( ptrs[instrs[pc]] );
debugBelch("\n");
pc += 1; break;
case bci_PUSH_ALTS_D:
debugBelch("PUSH_ALTS_D " ); printPtr( ptrs[instrs[pc]] );
debugBelch("\n");
pc += 1; break;
case bci_PUSH_ALTS_L:
debugBelch("PUSH_ALTS_L " ); printPtr( ptrs[instrs[pc]] );
debugBelch("\n");
pc += 1; break;
case bci_PUSH_ALTS_V:
debugBelch("PUSH_ALTS_V " ); printPtr( ptrs[instrs[pc]] );
debugBelch("\n");
pc += 1; break;
case bci_PUSH_PAD8:
debugBelch("PUSH_PAD8\n");
pc += 1; break;
case bci_PUSH_PAD16:
debugBelch("PUSH_PAD16\n");
pc += 1; break;
case bci_PUSH_PAD32:
debugBelch("PUSH_PAD32\n");
pc += 1; break;
case bci_PUSH_UBX8:
debugBelch(
"PUSH_UBX8 0x%" FMT_HexWord8 "\n",
(StgWord8) literals[instrs[pc]] );
pc += 1; break;
case bci_PUSH_UBX16:
debugBelch(
"PUSH_UBX16 0x%" FMT_HexWord16 "\n",
(StgWord16) literals[instrs[pc]] );
pc += 1; break;
case bci_PUSH_UBX32:
debugBelch(
"PUSH_UBX32 0x%" FMT_HexWord32 "\n",
(StgWord32) literals[instrs[pc]] );
pc += 1; break;
case bci_PUSH_UBX:
debugBelch("PUSH_UBX ");
for (i = 0; i < instrs[pc+1]; i++)
debugBelch("0x%" FMT_HexWord " ", literals[i + instrs[pc]] );
debugBelch("\n");
pc += 2; break;
case bci_PUSH_APPLY_N:
debugBelch("PUSH_APPLY_N\n");
break;
case bci_PUSH_APPLY_V:
debugBelch("PUSH_APPLY_V\n");
break;
case bci_PUSH_APPLY_F:
debugBelch("PUSH_APPLY_F\n");
break;
case bci_PUSH_APPLY_D:
debugBelch("PUSH_APPLY_D\n");
break;
case bci_PUSH_APPLY_L:
debugBelch("PUSH_APPLY_L\n");
break;
case bci_PUSH_APPLY_P:
debugBelch("PUSH_APPLY_P\n");
break;
case bci_PUSH_APPLY_PP:
debugBelch("PUSH_APPLY_PP\n");
break;
case bci_PUSH_APPLY_PPP:
debugBelch("PUSH_APPLY_PPP\n");
break;
case bci_PUSH_APPLY_PPPP:
debugBelch("PUSH_APPLY_PPPP\n");
break;
case bci_PUSH_APPLY_PPPPP:
debugBelch("PUSH_APPLY_PPPPP\n");
break;
case bci_PUSH_APPLY_PPPPPP:
debugBelch("PUSH_APPLY_PPPPPP\n");
break;
case bci_SLIDE:
debugBelch("SLIDE %d down by %d\n", instrs[pc], instrs[pc+1] );
pc += 2; break;
case bci_ALLOC_AP:
debugBelch("ALLOC_AP %d words\n", instrs[pc] );
pc += 1; break;
case bci_ALLOC_AP_NOUPD:
debugBelch("ALLOC_AP_NOUPD %d words\n", instrs[pc] );
pc += 1; break;
case bci_ALLOC_PAP:
debugBelch("ALLOC_PAP %d arity, %d words\n",
instrs[pc], instrs[pc+1] );
pc += 2; break;
case bci_MKAP:
debugBelch("MKAP %d words, %d stkoff\n", instrs[pc+1],
instrs[pc] );
pc += 2; break;
case bci_MKPAP:
debugBelch("MKPAP %d words, %d stkoff\n", instrs[pc+1],
instrs[pc] );
pc += 2; break;
case bci_UNPACK:
debugBelch("UNPACK %d\n", instrs[pc] );
pc += 1; break;
case bci_PACK:
debugBelch("PACK %d words with itbl ", instrs[pc+1] );
printPtr( (StgPtr)literals[instrs[pc]] );
debugBelch("\n");
pc += 2; break;
case bci_TESTLT_I: {
unsigned int discr = BCO_NEXT;
int failto = BCO_GET_LARGE_ARG;
debugBelch("TESTLT_I %" FMT_Int ", fail to %d\n", literals[discr], failto);
break;
}
case bci_TESTEQ_I:
debugBelch("TESTEQ_I %" FMT_Int ", fail to %d\n", literals[instrs[pc]],
instrs[pc+1]);
pc += 2; break;
case bci_TESTLT_F:
debugBelch("TESTLT_F %" FMT_Int ", fail to %d\n", literals[instrs[pc]],
instrs[pc+1]);
pc += 2; break;
case bci_TESTEQ_F:
debugBelch("TESTEQ_F %" FMT_Int ", fail to %d\n", literals[instrs[pc]],
instrs[pc+1]);
pc += 2; break;
case bci_TESTLT_D:
debugBelch("TESTLT_D %" FMT_Int ", fail to %d\n", literals[instrs[pc]],
instrs[pc+1]);
pc += 2; break;
case bci_TESTEQ_D:
debugBelch("TESTEQ_D %" FMT_Int ", fail to %d\n", literals[instrs[pc]],
instrs[pc+1]);
pc += 2; break;
case bci_TESTLT_P:
debugBelch("TESTLT_P %d, fail to %d\n", instrs[pc],
instrs[pc+1]);
pc += 2; break;
case bci_TESTEQ_P:
debugBelch("TESTEQ_P %d, fail to %d\n", instrs[pc],
instrs[pc+1]);
pc += 2; break;
case bci_CASEFAIL:
debugBelch("CASEFAIL\n" );
break;
case bci_JMP:
debugBelch("JMP to %d\n", instrs[pc]);
pc += 1; break;
case bci_ENTER:
debugBelch("ENTER\n");
break;
case bci_RETURN:
debugBelch("RETURN\n" );
break;
case bci_RETURN_P:
debugBelch("RETURN_P\n" );
break;
case bci_RETURN_N:
debugBelch("RETURN_N\n" );
break;
case bci_RETURN_F:
debugBelch("RETURN_F\n" );
break;
case bci_RETURN_D:
debugBelch("RETURN_D\n" );
break;
case bci_RETURN_L:
debugBelch("RETURN_L\n" );
break;
case bci_RETURN_V:
debugBelch("RETURN_V\n" );
break;
default:
barf("disInstr: unknown opcode %u", (unsigned int) instr);
}
return pc;
}
/* Something of a kludge .. how do we know where the end of the insn
array is, since it isn't recorded anywhere? Answer: the first
short is the number of bytecodes which follow it.
See GHC.CoreToByteCode.linkBCO.insns_arr for construction ...
*/
void disassemble( StgBCO *bco )
{
uint32_t i, j;
StgWord16* instrs = (StgWord16*)(bco->instrs->payload);
StgMutArrPtrs* ptrs = bco->ptrs;
uint32_t nbcs = (uint32_t)(bco->instrs->bytes / sizeof(StgWord16));
uint32_t pc = 1;
debugBelch("BCO\n" );
pc = 0;
while (pc < nbcs) {
debugBelch("\t%2d: ", pc );
pc = disInstr ( bco, pc );
}
debugBelch("INSTRS:\n " );
j = 16;
for (i = 0; i < nbcs; i++) {
debugBelch("%3d ", (int)instrs[i] );
j--;
if (j == 0) { j = 16; debugBelch("\n "); };
}
debugBelch("\n");
debugBelch("PTRS:\n " );
j = 8;
for (i = 0; i < ptrs->ptrs; i++) {
debugBelch("%8p ", ptrs->payload[i] );
j--;
if (j == 0) { j = 8; debugBelch("\n "); };
}
debugBelch("\n");
debugBelch("\n");
}
#endif /* DEBUG */
|
