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URL https://opencores.org/ocsvn/eco32/eco32/trunk

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[/] [eco32/] [trunk/] [lcc/] [src/] [alpha.md] - Blame information for rev 236

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Line No. Rev Author Line
1 4 hellwig
%{
2
#define INTTMP ((0xff<<1)|(1<<22)|(1<<25)|(1<<27))
3
#define INTVAR (0x3f<<9)
4
#define FLTTMP ((0x3f<<10)|(0x1ff<<22))
5
#define FLTVAR (0xff<<2)
6
 
7
#define INTRET 0x00000001
8
#define FLTRET 0x00000003
9
 
10
#define readsreg(p) \
11
        (generic((p)->op)==INDIR && (p)->kids[0]->op==VREG+P)
12
#define setsrc(d) ((d) && (d)->x.regnode && \
13
        (d)->x.regnode->set == src->x.regnode->set && \
14
        (d)->x.regnode->mask&src->x.regnode->mask)
15
 
16
#define relink(a, b) ((b)->x.prev = (a), (a)->x.next = (b))
17
 
18
#include "c.h"
19
#define NODEPTR_TYPE Node
20
#define OP_LABEL(p) ((p)->op)
21
#define LEFT_CHILD(p) ((p)->kids[0])
22
#define RIGHT_CHILD(p) ((p)->kids[1])
23
#define STATE_LABEL(p) ((p)->x.state)
24
static void address(Symbol, Symbol, long);
25
static void blkfetch(int, int, int, int);
26
static void blkloop(int, int, int, int, int, int[]);
27
static void blkstore(int, int, int, int);
28
static void defaddress(Symbol);
29
static void defconst(int, int, Value);
30
static void defstring(int, char *);
31
static void defsymbol(Symbol);
32
static void doarg(Node);
33
static void emit2(Node);
34
static void export(Symbol);
35
static void clobber(Node);
36
static void function(Symbol, Symbol [], Symbol [], int);
37
static void global(Symbol);
38
static void import(Symbol);
39
static void local(Symbol);
40
static void progbeg(int, char **);
41
static void progend(void);
42
static void segment(int);
43
static void space(int);
44
static void target(Node);
45
static Symbol ireg[32], freg[32];
46
static Symbol iregw, fregw;
47
 
48
static int tmpregs[] = {4, 2, 3};
49
static Symbol blkreg;
50
 
51
static int cseg;
52
 
53
static char *currentfile;
54
 
55
%}
56
%start stmt
57
%term CNSTF4=4113
58
%term CNSTF8=8209
59
%term CNSTF16=16401
60
%term CNSTI1=1045
61
%term CNSTI2=2069
62
%term CNSTI4=4117
63
%term CNSTI8=8213
64
%term CNSTP4=4119
65
%term CNSTP8=8215
66
%term CNSTU1=1046
67
%term CNSTU2=2070
68
%term CNSTU4=4118
69
%term CNSTU8=8214
70
 
71
%term ARGB=41
72
%term ARGF4=4129
73
%term ARGF8=8225
74
%term ARGF16=16417
75
%term ARGI4=4133
76
%term ARGI8=8229
77
%term ARGP4=4135
78
%term ARGP8=8231
79
%term ARGU4=4134
80
%term ARGU8=8230
81
 
82
%term ASGNB=57
83
%term ASGNF4=4145
84
%term ASGNF8=8241
85
%term ASGNF16=16433
86
%term ASGNI1=1077
87
%term ASGNI2=2101
88
%term ASGNI4=4149
89
%term ASGNI8=8245
90
%term ASGNP4=4151
91
%term ASGNP8=8247
92
%term ASGNU1=1078
93
%term ASGNU2=2102
94
%term ASGNU4=4150
95
%term ASGNU8=8246
96
 
97
%term INDIRB=73
98
%term INDIRF4=4161
99
%term INDIRF8=8257
100
%term INDIRF16=16449
101
%term INDIRI1=1093
102
%term INDIRI2=2117
103
%term INDIRI4=4165
104
%term INDIRI8=8261
105
%term INDIRP4=4167
106
%term INDIRP8=8263
107
%term INDIRU1=1094
108
%term INDIRU2=2118
109
%term INDIRU4=4166
110
%term INDIRU8=8262
111
 
112
%term CVFF4=4209
113
%term CVFF8=8305
114
%term CVFF16=16497
115
%term CVFI4=4213
116
%term CVFI8=8309
117
 
118
%term CVIF4=4225
119
%term CVIF8=8321
120
%term CVIF16=16513
121
%term CVII1=1157
122
%term CVII2=2181
123
%term CVII4=4229
124
%term CVII8=8325
125
%term CVIU1=1158
126
%term CVIU2=2182
127
%term CVIU4=4230
128
%term CVIU8=8326
129
 
130
%term CVPP4=4247
131
%term CVPP8=8343
132
%term CVPP16=16535
133
%term CVPU4=4246
134
%term CVPU8=8342
135
 
136
%term CVUI1=1205
137
%term CVUI2=2229
138
%term CVUI4=4277
139
%term CVUI8=8373
140
%term CVUP4=4279
141
%term CVUP8=8375
142
%term CVUP16=16567
143
%term CVUU1=1206
144
%term CVUU2=2230
145
%term CVUU4=4278
146
%term CVUU8=8374
147
 
148
%term NEGF4=4289
149
%term NEGF8=8385
150
%term NEGF16=16577
151
%term NEGI4=4293
152
%term NEGI8=8389
153
 
154
%term CALLB=217
155
%term CALLF4=4305
156
%term CALLF8=8401
157
%term CALLF16=16593
158
%term CALLI4=4309
159
%term CALLI8=8405
160
%term CALLP4=4311
161
%term CALLP8=8407
162
%term CALLU4=4310
163
%term CALLU8=8406
164
%term CALLV=216
165
 
166
%term RETF4=4337
167
%term RETF8=8433
168
%term RETF16=16625
169
%term RETI4=4341
170
%term RETI8=8437
171
%term RETP4=4343
172
%term RETP8=8439
173
%term RETU4=4342
174
%term RETU8=8438
175
%term RETV=248
176
 
177
%term ADDRGP4=4359
178
%term ADDRGP8=8455
179
 
180
%term ADDRFP4=4375
181
%term ADDRFP8=8471
182
 
183
%term ADDRLP4=4391
184
%term ADDRLP8=8487
185
 
186
%term ADDF4=4401
187
%term ADDF8=8497
188
%term ADDF16=16689
189
%term ADDI4=4405
190
%term ADDI8=8501
191
%term ADDP4=4407
192
%term ADDP8=8503
193
%term ADDU4=4406
194
%term ADDU8=8502
195
 
196
%term SUBF4=4417
197
%term SUBF8=8513
198
%term SUBF16=16705
199
%term SUBI4=4421
200
%term SUBI8=8517
201
%term SUBP4=4423
202
%term SUBP8=8519
203
%term SUBU4=4422
204
%term SUBU8=8518
205
 
206
%term LSHI4=4437
207
%term LSHI8=8533
208
%term LSHU4=4438
209
%term LSHU8=8534
210
 
211
%term MODI4=4453
212
%term MODI8=8549
213
%term MODU4=4454
214
%term MODU8=8550
215
 
216
%term RSHI4=4469
217
%term RSHI8=8565
218
%term RSHU4=4470
219
%term RSHU8=8566
220
 
221
%term BANDI4=4485
222
%term BANDI8=8581
223
%term BANDU4=4486
224
%term BANDU8=8582
225
 
226
%term BCOMI4=4501
227
%term BCOMI8=8597
228
%term BCOMU4=4502
229
%term BCOMU8=8598
230
 
231
%term BORI4=4517
232
%term BORI8=8613
233
%term BORU4=4518
234
%term BORU8=8614
235
 
236
%term BXORI4=4533
237
%term BXORI8=8629
238
%term BXORU4=4534
239
%term BXORU8=8630
240
 
241
%term DIVF4=4545
242
%term DIVF8=8641
243
%term DIVF16=16833
244
%term DIVI4=4549
245
%term DIVI8=8645
246
%term DIVU4=4550
247
%term DIVU8=8646
248
 
249
%term MULF4=4561
250
%term MULF8=8657
251
%term MULF16=16849
252
%term MULI4=4565
253
%term MULI8=8661
254
%term MULU4=4566
255
%term MULU8=8662
256
 
257
%term EQF4=4577
258
%term EQF8=8673
259
%term EQF16=16865
260
%term EQI4=4581
261
%term EQI8=8677
262
%term EQU4=4582
263
%term EQU8=8678
264
 
265
%term GEF4=4593
266
%term GEF8=8689
267
%term GEI4=4597
268
%term GEI8=8693
269
%term GEI16=16885
270
%term GEU4=4598
271
%term GEU8=8694
272
 
273
%term GTF4=4609
274
%term GTF8=8705
275
%term GTF16=16897
276
%term GTI4=4613
277
%term GTI8=8709
278
%term GTU4=4614
279
%term GTU8=8710
280
 
281
%term LEF4=4625
282
%term LEF8=8721
283
%term LEF16=16913
284
%term LEI4=4629
285
%term LEI8=8725
286
%term LEU4=4630
287
%term LEU8=8726
288
 
289
%term LTF4=4641
290
%term LTF8=8737
291
%term LTF16=16929
292
%term LTI4=4645
293
%term LTI8=8741
294
%term LTU4=4646
295
%term LTU8=8742
296
 
297
%term NEF4=4657
298
%term NEF8=8753
299
%term NEF16=16945
300
%term NEI4=4661
301
%term NEI8=8757
302
%term NEU4=4662
303
%term NEU8=8758
304
 
305
%term JUMPV=584
306
 
307
%term LABELV=600
308
 
309
%term LOADB=233
310
%term LOADF4=4321
311
%term LOADF8=8417
312
%term LOADF16=16609
313
%term LOADI1=1253
314
%term LOADI2=2277
315
%term LOADI4=4325
316
%term LOADI8=8421
317
%term LOADP4=4327
318
%term LOADP8=8423
319
%term LOADU1=1254
320
%term LOADU2=2278
321
%term LOADU4=4326
322
%term LOADU8=8422
323
 
324
%term VREGP=711
325
%%
326
reg:  INDIRI1(VREGP)     "# read register\n"
327
reg:  INDIRU1(VREGP)     "# read register\n"
328
 
329
reg:  INDIRI2(VREGP)     "# read register\n"
330
reg:  INDIRU2(VREGP)     "# read register\n"
331
 
332
reg:  INDIRF4(VREGP)     "# read register\n"
333
reg:  INDIRI4(VREGP)     "# read register\n"
334
reg:  INDIRP4(VREGP)     "# read register\n"
335
reg:  INDIRU4(VREGP)     "# read register\n"
336
 
337
reg:  INDIRF8(VREGP)     "# read register\n"
338
reg:  INDIRI8(VREGP)     "# read register\n"
339
reg:  INDIRP8(VREGP)     "# read register\n"
340
reg:  INDIRU8(VREGP)     "# read register\n"
341
 
342
stmt: ASGNI1(VREGP,reg)  "# write register\n"
343
stmt: ASGNU1(VREGP,reg)  "# write register\n"
344
 
345
stmt: ASGNI2(VREGP,reg)  "# write register\n"
346
stmt: ASGNU2(VREGP,reg)  "# write register\n"
347
 
348
stmt: ASGNF4(VREGP,reg)  "# write register\n"
349
stmt: ASGNI4(VREGP,reg)  "# write register\n"
350
stmt: ASGNP4(VREGP,reg)  "# write register\n"
351
stmt: ASGNU4(VREGP,reg)  "# write register\n"
352
 
353
stmt: ASGNF8(VREGP,reg)  "# write register\n"
354
stmt: ASGNI8(VREGP,reg)  "# write register\n"
355
stmt: ASGNP8(VREGP,reg)  "# write register\n"
356
stmt: ASGNU8(VREGP,reg)  "# write register\n"
357
con: CNSTI1  "%a"
358
con: CNSTU1  "%a"
359
 
360
con: CNSTI2  "%a"
361
con: CNSTU2  "%a"
362
 
363
con: CNSTI4  "%a"
364
con: CNSTU4  "%a"
365
con: CNSTP4  "%a"
366
 
367
con: CNSTI8  "%a"
368
con: CNSTU8  "%a"
369
con: CNSTP8  "%a"
370
stmt: reg  ""
371
acon: con     "%0"
372
acon: ADDRGP8  "%a"
373
 
374
addr: ADDI4(reg,acon)  "%1($%0)"
375
addr: ADDI8(reg,acon)  "%1($%0)"
376
addr: ADDU8(reg,acon)  "%1($%0)"
377
addr: ADDP8(reg,acon)  "%1($%0)"
378
 
379
addr: acon  "%0"
380
addr: reg   "($%0)"
381
 
382
addr: ADDRFP8  "%a+%F($sp)"
383
addr: ADDRLP8  "%a+%F($sp)"
384
 
385
reg: addr  "lda $%c,%0\n"  1
386
 
387
reg: CNSTI1  "# reg\n"  range(a, 0, 0)
388
reg: CNSTI2  "# reg\n"  range(a, 0, 0)
389
reg: CNSTI4  "# reg\n"  range(a, 0, 0)
390
reg: CNSTI8  "# reg\n"  range(a, 0, 0)
391
reg: CNSTU1  "# reg\n"  range(a, 0, 0)
392
reg: CNSTU2  "# reg\n"  range(a, 0, 0)
393
reg: CNSTU4  "# reg\n"  range(a, 0, 0)
394
reg: CNSTU8  "# reg\n"  range(a, 0, 0)
395
reg: CNSTP8  "# reg\n"  range(a, 0, 0)
396
 
397
stmt: ASGNI1(addr,reg)  "stb $%1,%0\n"  1
398
stmt: ASGNU1(addr,reg)  "stb $%1,%0\n"  1
399
stmt: ASGNI2(addr,reg)  "stw $%1,%0\n"  1
400
stmt: ASGNU2(addr,reg)  "stw $%1,%0\n"  1
401
 
402
stmt: ASGNI4(addr,reg)  "stl $%1,%0\n"  1
403
stmt: ASGNU4(addr,reg)  "stl $%1,%0\n"  1
404
stmt: ASGNI8(addr,reg)  "stq $%1,%0\n"  1
405
stmt: ASGNU8(addr,reg)  "stq $%1,%0\n"  1
406
stmt: ASGNP8(addr,reg)  "stq $%1,%0\n"  1
407
 
408
reg:  INDIRI1(reg)   "ldb $%c,($%0)\n"  1
409
reg:  INDIRI2(reg)   "ldw $%c,($%0)\n"  1
410
reg:  INDIRI4(addr)  "ldl $%c,%0\n"  1
411
reg:  INDIRI8(addr)  "ldq $%c,%0\n"  1
412
reg:  INDIRP8(addr)  "ldq $%c,%0\n"  1
413
reg:  INDIRU1(reg)   "ldbu $%c,($%0)\n"  1
414
reg:  INDIRU2(reg)   "ldwu $%c,($%0)\n"  1
415
reg:  INDIRU4(addr)  "ldl $%c,%0\nzap $%c,240,$%c\n"  2
416
reg:  INDIRU8(addr)  "ldq $%c,%0\n"  1
417
 
418
reg:  CVII4(INDIRI1(reg))   "ldb $%c,($%0)\n"  1
419
reg:  CVII8(INDIRI1(reg))   "ldb $%c,($%0)\n"  1
420
reg:  CVII4(INDIRI2(reg))   "ldw $%c,($%0)\n"  1
421
reg:  CVII8(INDIRI2(reg))   "ldw $%c,($%0)\n"  1
422
reg:  CVII8(INDIRI4(addr))  "ldl $%c,%0\n"  1
423
 
424
reg:  CVUU4(INDIRU1(reg))   "ldbu $%c,($%0)\n"  1
425
reg:  CVUU8(INDIRU1(reg))   "ldbu $%c,($%0)\n"  1
426
reg:  CVUU4(INDIRU2(reg))   "ldwu $%c,($%0)\n"  1
427
reg:  CVUU8(INDIRU2(reg))   "ldwu $%c,($%0)\n"  1
428
reg:  CVUU8(INDIRU4(addr))  "ldl $%c,%0\nzap $%c,240,$%c\n"  2
429
 
430
reg:  CVUI4(INDIRU1(reg))   "ldbu $%c,($%0)\n"  1
431
reg:  CVUI8(INDIRU1(reg))   "ldbu $%c,($%0)\n"  1
432
reg:  CVUI4(INDIRU2(reg))   "ldwu $%c,($%0)\n"  1
433
reg:  CVUI8(INDIRU2(reg))   "ldwu $%c,($%0)\n"  1
434
reg:  CVUI8(INDIRU4(addr))  "ldl $%c,%0\nzap $%c,240,$%c\n"  2
435
 
436
reg:  CVIU8(reg)  "mov $%0,$%c\n"  move(a)
437
 
438
reg:  INDIRF4(addr)     "lds $f%c,%0\n"  1
439
reg:  INDIRF8(addr)     "ldt $f%c,%0\n"  1
440
stmt: ASGNF4(addr,reg)  "sts $f%1,%0\n"  1
441
stmt: ASGNF8(addr,reg)  "stt $f%1,%0\n"  1
442
 
443
reg: MULI4(reg,rc)  "mull $%0,%1,$%c\n"   1
444
reg: MULI8(reg,rc)  "mulq $%0,%1,$%c\n"   1
445
reg: MULU4(reg,rc)  "mull $%0,%1,$%c\nzap $%c,240,$%c\n"  2
446
reg: MULU8(reg,rc)  "mulq $%0,%1,$%c\n"   1
447
 
448
reg: DIVI4(reg,rc)  "divl $%0,%1,$%c\n"   1
449
reg: DIVI8(reg,rc)  "divq $%0,%1,$%c\n"   1
450
reg: DIVU4(reg,rc)  "divlu $%0,%1,$%c\n"  1
451
reg: DIVU8(reg,rc)  "divqu $%0,%1,$%c\n"  1
452
reg: MODI4(reg,rc)  "reml $%0,%1,$%c\n"   1
453
reg: MODI8(reg,rc)  "remq $%0,%1,$%c\n"   1
454
reg: MODU4(reg,rc)  "remlu $%0,%1,$%c\n"  1
455
reg: MODU8(reg,rc)  "remqu $%0,%1,$%c\n"  1
456
 
457
rc:  con            "%0"
458
rc:  reg            "$%0"
459
 
460
reg: ADDI4(reg,rc)   "addl $%0,%1,$%c\n"  1
461
reg: ADDI8(reg,rc)   "addq $%0,%1,$%c\n"  1
462
reg: ADDP8(reg,rc)   "addq $%0,%1,$%c\n"  1
463
reg: ADDU4(reg,rc)   "addl $%0,%1,$%c\nzap $%c,240,$%c\n"  2
464
reg: ADDU8(reg,rc)   "addq $%0,%1,$%c\n"  1
465
reg: SUBI4(reg,rc)   "subl $%0,%1,$%c\n"  1
466
reg: SUBI8(reg,rc)   "subq $%0,%1,$%c\n"  1
467
reg: SUBP8(reg,rc)   "subq $%0,%1,$%c\n"  1
468
reg: SUBU4(reg,rc)   "subl $%0,%1,$%c\nzap $%c,240,$%c\n"  2
469
reg: SUBU8(reg,rc)   "subq $%0,%1,$%c\n"  1
470
 
471
reg: BANDI4(reg,rc)  "and $%0,%1,$%c\naddl $%c,0,$%c\n"   2
472
reg: BANDI8(reg,rc)  "and $%0,%1,$%c\n"   1
473
reg: BANDU4(reg,rc)  "and $%0,%1,$%c\n"   1
474
reg: BANDU8(reg,rc)  "and $%0,%1,$%c\n"   1
475
reg: BORI4(reg,rc)   "or $%0,%1,$%c\naddl $%c,0,$%c\n"   2
476
reg: BORI8(reg,rc)   "or $%0,%1,$%c\n"    1
477
reg: BORU4(reg,rc)   "or $%0,%1,$%c\n"    1
478
reg: BORU8(reg,rc)   "or $%0,%1,$%c\n"    1
479
reg: BXORI4(reg,rc)  "xor $%0,%1,$%c\naddl $%c,0,$%c\n"   2
480
reg: BXORI8(reg,rc)  "xor $%0,%1,$%c\n"   1
481
reg: BXORU4(reg,rc)  "xor $%0,%1,$%c\n"   1
482
reg: BXORU8(reg,rc)  "xor $%0,%1,$%c\n"   1
483
 
484
rc6: CNSTI4         "%a"  range(a,0,63)
485
rc6: CNSTI8         "%a"  range(a,0,63)
486
rc6: reg            "$%0"
487
 
488
reg: LSHI4(reg,rc6)  "sll $%0,%1,$%c\naddl $%c,0,$%c\n"   2
489
reg: LSHI8(reg,rc6)  "sll $%0,%1,$%c\n"  1
490
reg: LSHU4(reg,rc6)  "sll $%0,%1,$%c\nzap $%c,240,$%c\n"  2
491
reg: LSHU8(reg,rc6)  "sll $%0,%1,$%c\n"  1
492
reg: RSHI4(reg,rc6)  "sra $%0,%1,$%c\naddl $%c,0,$%c\n"   2
493
reg: RSHI8(reg,rc6)  "sra $%0,%1,$%c\n"  1
494
reg: RSHU4(reg,rc6)  "srl $%0,%1,$%c\n"  1
495
reg: RSHU8(reg,rc6)  "srl $%0,%1,$%c\n"  1
496
 
497
reg: BCOMI4(reg)  "not $%0,$%c\naddl $%c,0,$%c\n"   2
498
reg: BCOMU4(reg)  "not $%0,$%c\nzap $%c,240,$%c\n"  2
499
reg: BCOMI8(reg)  "not $%0,$%c\n"   1
500
reg: BCOMU8(reg)  "not $%0,$%c\n"   1
501
reg: NEGI4(reg)   "negl $%0,$%c\n"  1
502
reg: NEGI8(reg)   "negq $%0,$%c\n"  1
503
reg: LOADI1(reg)  "mov $%0,$%c\n"  move(a)
504
reg: LOADI2(reg)  "mov $%0,$%c\n"  move(a)
505
reg: LOADI4(reg)  "mov $%0,$%c\n"  move(a)
506
reg: LOADI8(reg)  "mov $%0,$%c\n"  move(a)
507
reg: LOADP8(reg)  "mov $%0,$%c\n"  move(a)
508
reg: LOADU1(reg)  "mov $%0,$%c\n"  move(a)
509
reg: LOADU2(reg)  "mov $%0,$%c\n"  move(a)
510
reg: LOADU4(reg)  "mov $%0,$%c\n"  move(a)
511
reg: LOADU8(reg)  "mov $%0,$%c\n"  move(a)
512
 
513
reg: ADDF4(reg,reg)  "adds $f%0,$f%1,$f%c\n"  1
514
reg: ADDF8(reg,reg)  "addt $f%0,$f%1,$f%c\n"  1
515
reg: DIVF4(reg,reg)  "divs $f%0,$f%1,$f%c\n"  1
516
reg: DIVF8(reg,reg)  "divt $f%0,$f%1,$f%c\n"  1
517
reg: MULF4(reg,reg)  "muls $f%0,$f%1,$f%c\n"  1
518
reg: MULF8(reg,reg)  "mult $f%0,$f%1,$f%c\n"  1
519
reg: SUBF4(reg,reg)  "subs $f%0,$f%1,$f%c\n"  1
520
reg: SUBF8(reg,reg)  "subt $f%0,$f%1,$f%c\n"  1
521
reg: LOADF4(reg)     "fmov $f%0,$f%c\n"       move(a)
522
reg: LOADF8(reg)     "fmov $f%0,$f%c\n"       move(a)
523
reg: NEGF4(reg)      "negs $f%0,$f%c\n"       1
524
reg: NEGF8(reg)      "negt $f%0,$f%c\n"       1
525
reg: CVII4(reg)  "sll $%0,8*(8-%a),$%c\nsra $%c,8*(8-%a),$%c\n"  2
526
reg: CVII8(reg)  "sll $%0,8*(8-%a),$%c\nsra $%c,8*(8-%a),$%c\n"  2
527
reg: CVUI4(reg)  "and $%0,(1<<(8*%a))-1,$%c\n"  1
528
reg: CVUI8(reg)  "and $%0,(1<<(8*%a))-1,$%c\n"  1
529
reg: CVUU4(reg)  "and $%0,(1<<(8*%a))-1,$%c\n"  1
530
reg: CVUU8(reg)  "and $%0,(1<<(8*%a))-1,$%c\n"  1
531
 
532
reg: CVUP8(reg)  "and $%0,(1<<(8*%a))-1,$%c\n"  1
533
 
534
reg: CVFF4(reg)  "cvtts $f%0,$f%c\n"  1
535
reg: CVFF8(reg)  "cvtst $f%0,$f%c\n"  1
536
 
537
reg: CVIF4(reg)  "stq $%0,-56+%F($sp)\nldt $%f%c,-56+%F($sp)\ncvtqs $f%c,$f%c\n"  3
538
reg: CVIF8(reg)  "stq $%0,-56+%F($sp)\nldt $%f%c,-56+%F($sp)\ncvtqt $f%c,$f%c\n"  3
539
reg: CVIF4(INDIRI4(addr))  "lds $f%c,%0\ncvtlq $f%c,$f%c\ncvtqs $f%c,$f%c\n"  3
540
reg: CVIF4(INDIRI8(addr))  "ldt $f%c,%0\ncvtqs $f%c,$f%c\n"  2
541
reg: CVIF8(INDIRI4(addr))  "lds $f%c,%0\ncvtlq $f%c,$f%c\ncvtqt $f%c,$f%c\n"  3
542
reg: CVIF8(INDIRI8(addr))  "ldt $f%c,%0\ncvtqt $f%c,$f%c\n"  2
543
 
544
reg: CVFI4(reg)  "cvttqc $f%0,$f1\ncvtql $f1,$f1\nsts $f1,-56+%F($sp)\nldl $%c,-56+%F($sp)\n"  4
545
reg: CVFI8(reg)  "cvttqc $f%0,$f1\nstt $f1,-56+%F($sp)\nldq $%c,-56+%F($sp)\n"  3
546
 
547
stmt: LABELV  "%a:\n"
548
 
549
stmt: JUMPV(acon)  "br %0\n"   1
550
stmt: JUMPV(reg)   "jmp ($%0)\n"  1
551
 
552
stmt: EQI4(reg,rc6)  "cmpeq $%0,%1,$23\nbne $23,%a\n"   2
553
stmt: EQU4(reg,rc6)  "cmpeq $%0,%1,$23\nbne $23,%a\n"   2
554
stmt: EQI8(reg,rc6)  "cmpeq $%0,%1,$23\nbne $23,%a\n"   2
555
stmt: EQU8(reg,rc6)  "cmpeq $%0,%1,$23\nbne $23,%a\n"   2
556
stmt: NEI4(reg,rc6)  "cmpeq $%0,%1,$23\nbeq $23,%a\n"   2
557
stmt: NEU4(reg,rc6)  "cmpeq $%0,%1,$23\nbeq $23,%a\n"   2
558
stmt: NEI8(reg,rc6)  "cmpeq $%0,%1,$23\nbeq $23,%a\n"   2
559
stmt: NEU8(reg,rc6)  "cmpeq $%0,%1,$23\nbeq $23,%a\n"   2
560
stmt: GEI4(reg,rc6)  "cmplt $%0,%1,$23\nbeq $23,%a\n"   2
561
stmt: GEI8(reg,rc6)  "cmplt $%0,%1,$23\nbeq $23,%a\n"   2
562
stmt: GEU4(reg,rc6)  "cmpult $%0,%1,$23\nbeq $23,%a\n"  1
563
stmt: GEU8(reg,rc6)  "cmpult $%0,%1,$23\nbeq $23,%a\n"  1
564
stmt: GTI4(reg,rc6)  "cmple $%0,%1,$23\nbeq $23,%a\n"   2
565
stmt: GTI8(reg,rc6)  "cmple $%0,%1,$23\nbeq $23,%a\n"   2
566
stmt: GTU4(reg,rc6)  "cmpule $%0,%1,$23\nbeq $23,%a\n"  1
567
stmt: GTU8(reg,rc6)  "cmpule $%0,%1,$23\nbeq $23,%a\n"  1
568
stmt: LEI4(reg,rc6)  "cmple $%0,%1,$23\nbne $23,%a\n"   2
569
stmt: LEI8(reg,rc6)  "cmple $%0,%1,$23\nbne $23,%a\n"   2
570
stmt: LEU4(reg,rc6)  "cmpule $%0,%1,$23\nbne $23,%a\n"  2
571
stmt: LEU8(reg,rc6)  "cmpule $%0,%1,$23\nbne $23,%a\n"  2
572
stmt: LTI4(reg,rc6)  "cmplt $%0,%1,$23\nbne $23,%a\n"   2
573
stmt: LTI8(reg,rc6)  "cmplt $%0,%1,$23\nbne $23,%a\n"   2
574
stmt: LTU4(reg,rc6)  "cmpult $%0,%1,$23\nbne $23,%a\n"  2
575
stmt: LTU8(reg,rc6)  "cmpult $%0,%1,$23\nbne $23,%a\n"  2
576
 
577
stmt: EQF4(reg,reg)  "cmpteq $f%0,$f%1,$f1\nfbne $f1,%a\n"  2
578
stmt: EQF8(reg,reg)  "cmpteq $f%0,$f%1,$f1\nfbne $f1,%a\n"  2
579
stmt: LEF4(reg,reg)  "cmptle $f%0,$f%1,$f1\nfbne $f1,%a\n"  2
580
stmt: LEF8(reg,reg)  "cmptle $f%0,$f%1,$f1\nfbne $f1,%a\n"  2
581
stmt: LTF4(reg,reg)  "cmptlt $f%0,$f%1,$f1\nfbne $f1,%a\n"  2
582
stmt: LTF8(reg,reg)  "cmptlt $f%0,$f%1,$f1\nfbne $f1,%a\n"  2
583
 
584
stmt: NEF4(reg,reg)  "cmpteq $f%0,$f%1,$f1\nfbeq $f1,%a\n"  2
585
stmt: NEF8(reg,reg)  "cmpteq $f%0,$f%1,$f1\nfbeq $f1,%a\n"  2
586
stmt: GEF4(reg,reg)  "cmptlt $f%0,$f%1,$f1\nfbeq $f1,%a\n"  2
587
stmt: GEF8(reg,reg)  "cmptlt $f%0,$f%1,$f1\nfbeq $f1,%a\n"  2
588
stmt: GTF4(reg,reg)  "cmptle $f%0,$f%1,$f1\nfbeq $f1,%a\n"  2
589
stmt: GTF8(reg,reg)  "cmptle $f%0,$f%1,$f1\nfbeq $f1,%a\n"  2
590
 
591
ar:   ADDRGP8     "%a"
592
ar:   reg    "($%0)"
593
 
594
reg:  CALLF4(ar)  "jsr $26,%0\nldgp $gp,0($26)\n"  2
595
reg:  CALLF8(ar)  "jsr $26,%0\nldgp $gp,0($26)\n"  2
596
reg:  CALLI4(ar)  "jsr $26,%0\nldgp $gp,0($26)\n"  2
597
reg:  CALLI8(ar)  "jsr $26,%0\nldgp $gp,0($26)\n"  2
598
reg:  CALLP8(ar)  "jsr $26,%0\nldgp $gp,0($26)\n"  2
599
reg:  CALLU4(ar)  "jsr $26,%0\nldgp $gp,0($26)\n"  2
600
reg:  CALLU8(ar)  "jsr $26,%0\nldgp $gp,0($26)\n"  2
601
stmt: CALLV(ar)  "jsr $26,%0\nldgp $gp,0($26)\n"  2
602
 
603
stmt: RETF4(reg)  "# ret\n"  1
604
stmt: RETF8(reg)  "# ret\n"  1
605
stmt: RETI4(reg)  "# ret\n"  1
606
stmt: RETU4(reg)  "# ret\n"  1
607
stmt: RETI8(reg)  "# ret\n"  1
608
stmt: RETU8(reg)  "# ret\n"  1
609
stmt: RETP8(reg)  "# ret\n"  1
610
stmt: RETV(reg)   "# ret\n"  1
611
 
612
stmt: ARGF4(reg)  "# arg\n"  1
613
stmt: ARGF8(reg)  "# arg\n"  1
614
stmt: ARGI4(reg)  "# arg\n"  1
615
stmt: ARGI8(reg)  "# arg\n"  1
616
stmt: ARGP8(reg)  "# arg\n"  1
617
stmt: ARGU4(reg)  "# arg\n"  1
618
stmt: ARGU8(reg)  "# arg\n"  1
619
 
620
stmt: ARGB(INDIRB(reg))       "# argb %0\n"      1
621
stmt: ASGNB(reg,INDIRB(reg))  "# asgnb %0 %1\n"  1
622
 
623
%%
624
static void progend(void){}
625
 
626
static void progbeg(int argc, char *argv[]) {
627
        int i;
628
 
629
        {
630
                union {
631
                        char c;
632
                        int i;
633
                } u;
634
                u.i = 0;
635
                u.c = 1;
636
                swap = ((int)(u.i == 1)) != IR->little_endian;
637
        }
638
        parseflags(argc, argv);
639
 
640
        for (i = 0; i < 32; i++)
641
                freg[i] = mkreg("%d", i, 1, FREG);
642
        for (i = 0; i < 32; i++)
643
                ireg[i]  = mkreg("%d", i, 1, IREG);
644
        ireg[29]->x.name = "gp";
645
        ireg[30]->x.name = "sp";
646
        fregw = mkwildcard(freg);
647
        iregw = mkwildcard(ireg);
648
 
649
        tmask[IREG] = INTTMP; tmask[FREG] = FLTTMP;
650
        vmask[IREG] = INTVAR; vmask[FREG] = FLTVAR;
651
 
652
        blkreg = mkreg("1", 1, 0xf, IREG);
653
 
654
}
655
 
656
static Symbol rmap(int opk) {
657
        switch (optype(opk)) {
658
        case I: case U: case P: case B:
659
                return iregw;
660
        case F:
661
                return fregw;
662
        default:
663
                return 0;
664
        }
665
}
666
 
667
static Symbol argreg(int offset, int ty) {
668
        if (offset >= 48)
669
                return NULL;
670
        else if (ty == F)
671
                return freg[(offset/8) + 16];
672
        else
673
                return ireg[(offset/8) + 16];
674
}
675
 
676
static void target(Node p) {
677
        assert(p);
678
        switch (specific(p->op)) {
679
        case CNST+I: case CNST+U: case CNST+P:
680
                if (range(p, 0, 0) == 0) {
681
                        setreg(p, ireg[31]);
682
                        p->x.registered = 1;
683
                }
684
                break;
685
        case CNST+F:
686
                if (p->syms[0]->u.c.v.d == 0) {
687
                        setreg(p, freg[31]);
688
                        p->x.registered = 1;
689
                }
690
                break;
691
 
692
        case CALL+V:
693
                rtarget(p, 0, ireg[27]);
694
                break;
695
        case CALL+F:
696
                rtarget(p, 0, ireg[27]);
697
                setreg(p, freg[0]);
698
                break;
699
        case CALL+I: case CALL+P: case CALL+U:
700
                rtarget(p, 0, ireg[27]);
701
                setreg(p, ireg[0]);
702
                break;
703
        case RET+F:
704
                rtarget(p, 0, freg[0]);
705
                break;
706
        case RET+I: case RET+U: case RET+P:
707
                rtarget(p, 0, ireg[0]);
708
                break;
709
 
710
        case ARG+F: case ARG+I: case ARG+P: case ARG+U: {
711
                Symbol q = argreg(p->syms[2]->u.c.v.i, optype(p->op));
712
                if (q)
713
                        rtarget(p, 0, q);
714
                break;
715
                }
716
 
717
 
718
        case ASGN+B: rtarget(p->kids[1], 0, blkreg); break;
719
        case ARG+B:  rtarget(p->kids[0], 0, blkreg); break;
720
 
721
        }
722
}
723
 
724
static void clobber(Node p) {
725
        assert(p);
726
        switch (specific(p->op)) {
727
        case ASGN+I: case ASGN+U:
728
                if (opsize(p->op) <= 2)
729
                        spill(1<<24, IREG, p);
730
                break;
731
 
732
        case DIV+I: case DIV+U: case MOD+I: case MOD+U:
733
                spill(((1<<27)|(3<<24))&~p->syms[RX]->x.regnode->mask, IREG, p);
734
                break;
735
 
736
        case CALL+F:
737
                spill(INTTMP | INTRET, IREG, p);
738
                spill(FLTTMP,          FREG, p);
739
                break;
740
        case CALL+I: case CALL+P: case CALL+U:
741
                spill(INTTMP,          IREG, p);
742
                spill(FLTTMP | FLTRET, FREG, p);
743
                break;
744
        case CALL+V:
745
                spill(INTTMP | INTRET, IREG, p);
746
                spill(FLTTMP | FLTRET, FREG, p);
747
                break;
748
 
749
        }
750
}
751
 
752
static void emit2(Node p) {
753
        int dst, n, src, sz, ty;
754
        static int ty0;
755
        Symbol q;
756
 
757
        switch (specific(p->op)) {
758
        case ARG+F: case ARG+I: case ARG+P: case ARG+U:
759
                ty = optype(p->op);
760
                sz = opsize(p->op);
761
                q = argreg(p->syms[2]->u.c.v.i, ty);
762
                src = getregnum(p->x.kids[0]);
763
                if (q)
764
                        break;
765
                else if (ty == F && sz == 4)
766
                        print("sts $f%d,%d($sp)\n", src, p->syms[2]->u.c.v.i - 48);
767
                else if (ty == F && sz == 8)
768
                        print("stt $f%d,%d($sp)\n", src, p->syms[2]->u.c.v.i - 48);
769
                else if (sz == 4)
770
                        print("stq $%d,%d($sp)\n", src, p->syms[2]->u.c.v.i - 48);
771
                else if (sz == 8)
772
                        print("stq $%d,%d($sp)\n", src, p->syms[2]->u.c.v.i - 48);
773
                else
774
                        assert(0);
775
                break;
776
 
777
        case ASGN+B:
778
                dalign = salign = p->syms[1]->u.c.v.i;
779
                blkcopy(getregnum(p->x.kids[0]), 0,
780
                        getregnum(p->x.kids[1]), 0,
781
                        p->syms[0]->u.c.v.i, tmpregs);
782
                break;
783
 
784
 
785
        case ARG+B: {
786
                int doff = p->syms[2]->u.c.v.i, soff = 0, sreg = getregnum(p->x.kids[0]);
787
                dalign = 8;
788
                salign = p->syms[1]->u.c.v.i;
789
                n = p->syms[0]->u.c.v.i;
790
                for ( ; doff <= 40 && n > 0; doff += 8) {
791
                        print("uldq $%d,%d($%d)\n", (doff/8)+16, soff, sreg);
792
                        soff += 8;
793
                        n -= 8;
794
                }
795
                if (n > 0)
796
                        blkcopy(30, doff - 48, sreg, soff, n, tmpregs);
797
                break;
798
                }
799
 
800
        }
801
}
802
 
803
static void doarg(Node p) {
804
        p->syms[2] = intconst(mkactual(8, roundup(p->syms[0]->u.c.v.i,8)));
805
}
806
 
807
static void local(Symbol p) {
808
        if (askregvar(p, rmap(ttob(p->type))) == 0)
809
                mkauto(p);
810
}
811
 
812
static int bitcount(unsigned mask) {
813
        unsigned i, n = 0;
814
 
815
        for (i = 1; i; i <<= 1)
816
                if (mask&i)
817
                        n++;
818
        return n;
819
}
820
 
821
static void function(Symbol f, Symbol caller[], Symbol callee[], int ncalls) {
822
        int i, sizeargs, saved, sizefsave, sizeisave, varargs;
823
        Symbol r, argregs[6];
824
 
825
        usedmask[0] = usedmask[1] = 0;
826
        freemask[0] = freemask[1] = ~(unsigned)0;
827
        maxargoffset = offset = maxoffset = 0;
828
 
829
        for (i = 0; callee[i]; i++)
830
                ;
831
        varargs = variadic(f->type)
832
                || i > 0 && strcmp(callee[i-1]->name, "va_alist") == 0;
833
        if (varargs)
834
                sizeargs = 2*48;
835
        else
836
                sizeargs = 48;
837
 
838
        for (i = 0; callee[i]; i++) {
839
                Symbol p = callee[i];
840
                Symbol q = caller[i];
841
                assert(q);
842
                if (isfloat(p->type) && varargs) {
843
                        p->x.offset = q->x.offset = offset - 2*48;
844
                        p->x.name = q->x.name = stringd(offset - 2*48);
845
                } else {
846
                        p->x.offset = q->x.offset = offset - 48;
847
                        p->x.name = q->x.name = stringd(offset - 48);
848
                }
849
                offset = roundup(offset, q->type->align);
850
                r = argreg(offset, optype(ttob(q->type)));
851
                if (i < 6)
852
                        argregs[i] = r;
853
                offset = roundup(offset + q->type->size, 8);
854
                if (varargs)
855
                        p->sclass = AUTO;
856
                else if (r && ncalls == 0 && !isstruct(q->type) && !p->addressed
857
) {
858
                        p->sclass = q->sclass = REGISTER;
859
                        askregvar(p, r);
860
                        assert(p->x.regnode && p->x.regnode->vbl == p);
861
                        q->x = p->x;
862
                        q->type = p->type;
863
                } else if (askregvar(p, rmap(ttob(p->type)))
864
                           && r != NULL /*
865
                           && (isint(p->type) || p->type == q->type) */
866
) {
867
                        assert(q->sclass != REGISTER);
868
                        p->sclass = q->sclass = REGISTER;
869
                        q->type = p->type;
870
                }
871
 
872
        }
873
        assert(!caller[i]);
874
 
875
        offset = sizeargs + 8;
876
        gencode(caller, callee);
877
        usedmask[IREG] &= ~(INTTMP|(0x3f<<16)|INTRET);
878
        usedmask[FREG] &= ~(FLTTMP|(0x3f<<16)|FLTRET);
879
        if (ncalls || usedmask[IREG] || usedmask[FREG])
880
                usedmask[IREG] |= 1<<26;
881
        sizefsave = 8*bitcount(usedmask[FREG]);
882
        sizeisave = 8*bitcount(usedmask[IREG]);
883
        if (maxargoffset > 48)
884
                maxargoffset -= 48;
885
        else
886
                maxargoffset = 0;
887
        if (maxoffset < sizeargs)
888
                maxoffset = sizeargs;
889
        framesize = roundup(maxargoffset + sizefsave + sizeisave + maxoffset, 16);
890
        segment(CODE);
891
        print(".ent %s\n", f->x.name);
892
        print("%s:\n", f->x.name);
893
        print("ldgp $gp,0($27)\n");
894
        i = maxargoffset + sizefsave - framesize;
895
        if (framesize > 0)
896
                print("lda $sp,%d($sp)\n", -framesize);
897
        if (usedmask[FREG])
898
                print(".fmask 0x%x,%d\n", usedmask[FREG], i - 8);
899
        if (usedmask[IREG])
900
                print(".mask 0x%x,%d\n",  usedmask[IREG], i + sizeisave - 8);
901
        print(".frame $sp,%d,$26,%d\n", framesize, sizeargs);
902
 
903
        saved = maxargoffset;
904
        for (i = 2; i <= 9; i++)
905
                if (usedmask[FREG]&(1<
906
                        print("stt $f%d,%d($sp)\n", i, saved);
907
                        saved += 8;
908
                }
909
 
910
        for (i = 9; i <= 26; i++)
911
                if (usedmask[IREG]&(1<
912
                        print("stq $%d,%d($sp)\n", i, saved);
913
                        saved += 8;
914
                }
915
        for (i = 0; i < 6 && callee[i]; i++) {
916
                r = argregs[i];
917
                if (r && r->x.regnode != callee[i]->x.regnode) {
918
                        Symbol out = callee[i];
919
                        Symbol in  = caller[i];
920
                        int rn = r->x.regnode->number;
921
                        int rs = r->x.regnode->set;
922
                        int tyin = ttob(in->type);
923
 
924
                        assert(out && in && r && r->x.regnode);
925
                        assert(out->sclass != REGISTER || out->x.regnode);
926
                        if (out->sclass == REGISTER) {
927
                                if (rs == FREG)
928
                                        print("fmov $f%d,$f%d\n", rn, out->x.regnode->number);
929
                                else
930
                                        print("mov $%d,$%d\n", rn, out->x.regnode->number);
931
 
932
                        } else {
933
                                int off = in->x.offset + framesize;
934
                                if (rs == FREG && tyin == F+sizeop(8))
935
                                        print("stt $f%d,%d($sp)\n", rn, off);
936
                                else if (rs == FREG && tyin == F+sizeop(4))
937
                                        print("sts $f%d,%d($sp)\n", rn, off);
938
                                else {
939
                                        int i, n = (in->type->size + 7)/8;
940
                                        for (i = rn; i < rn+n && i <= 21; i++)
941
                                                print("stq $%d,%d($sp)\n", i, off + (i-rn)*8);
942
                                }
943
 
944
                        }
945
 
946
                }
947
        }
948
        if (varargs && callee[i-1]) {
949
                i = callee[i-1]->x.offset + roundup(callee[i-1]->type->size, 8);
950
                for (i = (48+i)/8; i < 6; i++) {
951
                        print("stq $%d,%d($sp)\n",  i + 16, framesize -   48 + 8*i);
952
                        print("stt $f%d,%d($sp)\n", i + 16, framesize - 2*48 + 8*i);
953
                }
954
        }
955
        print(".prologue 1\n");
956
 
957
        emitcode();
958
        saved = maxargoffset;
959
        for (i = 2; i <= 9; i++)
960
                if (usedmask[FREG]&(1<
961
                        print("ldt $f%d,%d($sp)\n", i, saved);
962
                        saved += 8;
963
                }
964
        for (i = 9; i <= 26; i++)
965
                if (usedmask[IREG]&(1<
966
                        print("ldq $%d,%d($sp)\n", i, saved);
967
                        saved += 8;
968
                }
969
        if (framesize > 0)
970
                print("lda $sp,%d($sp)\n", framesize);
971
        print("ret\n");
972
        print(".end %s\n", f->x.name);
973
 
974
}
975
 
976
static void defconst(int suffix, int size, Value v) {
977
        if (suffix == F && size == 4) {
978
                float f = v.d;
979
                print(".long 0x%x\n", *(unsigned *)&f);
980
        } else if (suffix == F && size == 8) {
981
                double d = v.d;
982
                unsigned *p = (unsigned *)&d;
983
                print(".long 0x%x\n.long 0x%x\n", p[swap], p[!swap]);
984
        } else if (suffix == P)
985
                print(".quad 0x%X\n", v.p);
986
        else if (size == 1)
987
                print(".byte 0x%x\n", suffix == I ? v.i : v.u);
988
        else if (size == 2)
989
                print(".word 0x%x\n", suffix == I ? v.i&0xFFFF : v.u&0xFFFF);
990
        else if (size == 4)
991
                print(".long 0x%x\n", suffix == I ? v.i : v.u);
992
        else if (size == 8)
993
                print(".quad 0x%X\n", suffix == I ? v.i : v.u);
994
 
995
}
996
 
997
static void defaddress(Symbol p) {
998
        print(".quad %s\n", p->x.name);
999
}
1000
 
1001
static void defstring(int n, char *str) {
1002
        char *s;
1003
 
1004
        for (s = str; s < str + n; s++)
1005
                print(".byte %d\n", (*s)&0377);
1006
}
1007
 
1008
static void export(Symbol p) {
1009
        print(".globl %s\n", p->x.name);
1010
}
1011
 
1012
static void import(Symbol p) {
1013
        if (!isfunc(p->type))
1014
                print(".extern %s %d\n", p->name, p->type->size);
1015
}
1016
 
1017
static void defsymbol(Symbol p) {
1018
        if (p->scope >= LOCAL && p->sclass == STATIC)
1019
                p->x.name = stringf("L.%d", genlabel(1));
1020
        else if (p->generated)
1021
                p->x.name = stringf("L.%s", p->name);
1022
        else
1023
                assert(p->scope != CONSTANTS || isint(p->type) || isptr(p->type)),
1024
                p->x.name = p->name;
1025
}
1026
 
1027
static void address(Symbol q, Symbol p, long n) {
1028
        if (p->scope == GLOBAL
1029
        || p->sclass == STATIC || p->sclass == EXTERN)
1030
                q->x.name = stringf("%s%s%D", p->x.name,
1031
                        n >= 0 ? "+" : "", n);
1032
        else {
1033
                assert(n <= INT_MAX && n >= INT_MIN);
1034
                q->x.offset = p->x.offset + n;
1035
                q->x.name = stringd(q->x.offset);
1036
        }
1037
}
1038
 
1039
static void global(Symbol p) {
1040
        if (p->u.seg == DATA || p->u.seg == LIT) {
1041
                assert(p->type->align <= 8);
1042
                print(".align %c\n", ".01.2...3"[p->type->align]);
1043
                print("%s:\n", p->x.name);
1044
        } else if (p->sclass == STATIC || Aflag >= 2)
1045
                print(".lcomm %s,%d\n", p->x.name, p->type->size);
1046
        else
1047
                print( ".comm %s,%d\n", p->x.name, p->type->size);
1048
}
1049
 
1050
static void segment(int n) {
1051
        cseg = n;
1052
        switch (n) {
1053
        case DATA: print(".sdata\n"); break;
1054
        case CODE: print(".text\n");  break;
1055
        case LIT:  print(".rdata\n"); break;
1056
        }
1057
}
1058
 
1059
static void space(int n) {
1060
        if (cseg != BSS)
1061
                print(".space %d\n", n);
1062
}
1063
 
1064
static void blkloop(int dreg, int doff, int sreg, int soff, int size, int tmps[]) {
1065
        int lab = genlabel(1);
1066
 
1067
        print("addq $%d,%d,$%d\n",   sreg, size&~7, sreg);
1068
        print("addq $%d,%d,$%d\n",   dreg, size&~7, tmps[2]);
1069
        blkcopy(tmps[2], doff, sreg, soff, size&7, tmps);
1070
        print("L.%d:\n", lab);
1071
        print("addq $%d,%d,$%d\n",    sreg, -8, sreg);
1072
        print("addq $%d,%d,$%d\n", tmps[2], -8, tmps[2]);
1073
        blkcopy(tmps[2], doff, sreg, soff, 8, tmps);
1074
        print("cmpult $%d,$%d,$23\nbne $23,L.%d\n", dreg, tmps[2], lab);
1075
}
1076
 
1077
static void blkfetch(int size, int off, int reg, int tmp) {
1078
        assert(size == 1 || size == 2 || size == 4 || size == 8);
1079
        if (size == 1)
1080
                print("ldb $%d,%d($%d)\n",  tmp, off, reg);
1081
        else if (size == 2)
1082
                print("ldw $%d,%d($%d)\n",  tmp, off, reg);
1083
        else if (salign >= size && size == 4)
1084
                print("ldl $%d,%d($%d)\n",  tmp, off, reg);
1085
        else if (salign >= size && size == 8)
1086
                print("ldq $%d,%d($%d)\n",  tmp, off, reg);
1087
        else if (size == 4)
1088
                print("uldl $%d,%d($%d)\n", tmp, off, reg);
1089
        else
1090
                print("uldq $%d,%d($%d)\n", tmp, off, reg);
1091
}
1092
 
1093
static void blkstore(int size, int off, int reg, int tmp) {
1094
        assert(size == 1 || size == 2 || size == 4 || size == 8);
1095
        if (size == 1)
1096
                print("stb $%d,%d($%d)\n",  tmp, off, reg);
1097
        else if (size == 2)
1098
                print("stw $%d,%d($%d)\n",  tmp, off, reg);
1099
        else if (dalign >= size && size == 4)
1100
                print("stl $%d,%d($%d)\n",  tmp, off, reg);
1101
        else if (dalign >= size && size == 8)
1102
                print("stq $%d,%d($%d)\n",  tmp, off, reg);
1103
        else if (size == 4)
1104
                print("ustl $%d,%d($%d)\n", tmp, off, reg);
1105
        else
1106
                print("ustq $%d,%d($%d)\n", tmp, off, reg);
1107
}
1108
 
1109
/* stabinit - initialize stab output */
1110
static void stabinit(char *file, int argc, char *argv[]) {
1111
        if (file) {
1112
                print(".file 2,\"%s\"\n", file);
1113
                currentfile = file;
1114
        }
1115
}
1116
 
1117
/* stabline - emit stab entry for source coordinate *cp */
1118
static void stabline(Coordinate *cp) {
1119
        if (cp->file && cp->file != currentfile) {
1120
                print(".file 2,\"%s\"\n", cp->file);
1121
                currentfile = cp->file;
1122
        }
1123
        print(".loc 2,%d\n", cp->y);
1124
}
1125
 
1126
/* stabsym - output a stab entry for symbol p */
1127
static void stabsym(Symbol p) {
1128
        if (p == cfunc && IR->stabline)
1129
                (*IR->stabline)(&p->src);
1130
}
1131
Interface alphaIR = {
1132
        1, 1, 0,  /* char */
1133
        2, 2, 0,  /* short */
1134
        4, 4, 0,  /* int */
1135
        8, 8, 0,  /* long */
1136
        8, 8, 0,  /* long long */
1137
        4, 4, 1,  /* float */
1138
        8, 8, 1,  /* double */
1139
        8, 8, 1,  /* long double */
1140
        8, 8, 0,  /* T * */
1141
        0, 1, 0,  /* struct */
1142
 
1143
        1,      /* little_endian */
1144
        0,  /* mulops_calls */
1145
        0,  /* wants_callb */
1146
        1,  /* wants_argb */
1147
        1,  /* left_to_right */
1148
        0,  /* wants_dag */
1149
        0,  /* unsigned_char */
1150
        address,
1151
        blockbeg,
1152
        blockend,
1153
        defaddress,
1154
        defconst,
1155
        defstring,
1156
        defsymbol,
1157
        emit,
1158
        export,
1159
        function,
1160
        gen,
1161
        global,
1162
        import,
1163
        local,
1164
        progbeg,
1165
        progend,
1166
        segment,
1167
        space,
1168
        0, 0, 0, stabinit, stabline, stabsym, 0,
1169
        {
1170
                1,      /* max_unaligned_load */
1171
                rmap,
1172
                blkfetch, blkstore, blkloop,
1173
                _label,
1174
                _rule,
1175
                _nts,
1176
                _kids,
1177
                _string,
1178
                _templates,
1179
                _isinstruction,
1180
                _ntname,
1181
                emit2,
1182
                doarg,
1183
                target,
1184
                clobber,
1185
 
1186
        }
1187
 
1188
};
1189
 
1190
 
1191
static char rcsid[] = "$Id: alpha.md,v 1.1 2002/08/28 23:12:41 drh Exp $";
1192
 

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