-
Notifications
You must be signed in to change notification settings - Fork 2
/
Copy pathavx-builder.c
455 lines (369 loc) · 13.6 KB
/
avx-builder.c
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
/*
* Copyright © 2016 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include <stddef.h>
#include <string.h>
#include "ksim.h"
#include "avx-builder.h"
static void *shader_pool, *shader_end;
const size_t shader_pool_size = 64 * 1024;
static void *constant_pool;
const size_t constant_pool_size = 8192;
uint32_t constant_pool_index;
void
reset_shader_pool(void)
{
if (shader_pool == NULL) {
int fd = memfd_create("jit", MFD_CLOEXEC);
ftruncate(fd, shader_pool_size);
shader_pool = mmap(NULL, shader_pool_size,
PROT_WRITE | PROT_READ | PROT_EXEC,
MAP_SHARED, fd, 0);
close(fd);
}
constant_pool = shader_pool;
constant_pool_index = 0;
shader_end = shader_pool + constant_pool_size;
}
void *
get_const_data(size_t size, size_t align)
{
int offset = align_u64(constant_pool_index, align);
constant_pool_index = offset + size;
ksim_assert(offset + size <= constant_pool_size);
return constant_pool + offset;
}
static int
builder_disasm_printf(void *_bld, const char *fmt, ...)
{
struct builder *bld = _bld;
va_list va;
int length;
va_start(va, fmt);
length = vsnprintf(bld->disasm_output + bld->disasm_length,
sizeof(bld->disasm_output) - bld->disasm_length, fmt, va);
va_end(va);
bld->disasm_length += length;
return length;
}
void
builder_init(struct builder *bld)
{
bld->shader = align_ptr(shader_end, 64);
bld->p = (uint8_t *) bld->shader;
bld->disasm_tail = bld->p - (uint8_t *) shader_pool;
init_disassemble_info(&bld->info, bld, builder_disasm_printf);
bld->info.arch = bfd_arch_i386;
bld->info.mach = bfd_mach_x86_64;
bld->info.buffer_vma = 0;
bld->info.buffer_length = shader_pool_size;
bld->info.buffer = shader_pool;
bld->info.section = NULL;
disassemble_init_for_target(&bld->info);
bld->disasm_fn =
disassembler(bld->info.arch,
FALSE, bld->info.mach, NULL);
}
shader_t
builder_finish(struct builder *bld)
{
shader_end = bld->p;
ksim_assert(shader_end - shader_pool < shader_pool_size);
return bld->shader;
}
bool
builder_disasm(struct builder *bld)
{
const int end = bld->p - (uint8_t *) shader_pool;
bld->disasm_length = 0;
if (bld->disasm_tail < end) {
bld->disasm_last = bld->disasm_tail;
bld->disasm_length += snprintf(bld->disasm_output + bld->disasm_length,
sizeof(bld->disasm_output) - bld->disasm_length,
"%08x ", bld->disasm_tail);
bld->disasm_tail +=
bld->disasm_fn(bld->disasm_tail, &bld->info);
return true;
} else {
return false;
}
}
void
builder_align(struct builder *bld)
{
int len = (-(intptr_t) bld->p) & 15;
static const uint8_t nops[][10] = {
{ },
{ 0x90 },
{ 0x66, 0x90},
{ 0x0f, 0x1f, 0x00 },
{ 0x0f, 0x1f, 0x40, 0x00 },
{ 0x0f, 0x1f, 0x44, 0x00, 0x00, },
{ 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00},
{ 0x0f, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00,},
{ 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,},
{ 0x66, 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00 },
};
if (len >= 9) {
memcpy(bld->p, nops[9], 9);
bld->p += 9;
len -= 9;
}
memcpy(bld->p, nops[len], len);
bld->p += len;
}
#ifdef TEST_AVX_BUILDER
uint32_t trace_mask = 0;
uint32_t breakpoint_mask = 0;
FILE *trace_file;
static void
test_fail(struct builder *bld, const char *fmt, ...)
{
const uint8_t *code = (uint8_t *) bld->shader;
const int size = bld->p - code;
va_list va;
va_start(va, fmt);
vprintf(fmt, va);
va_end(va);
for (int i = 0; i < size; i++)
printf("%02x ", code[i]);
printf("%s\n", bld->disasm_output);
exit(EXIT_FAILURE);
}
static void
check_reg_imm_emit_function(const char *fmt,
void (*func)(struct builder *bld, int reg, int imm), int delta)
{
const int imm = 100;
struct builder bld;
for (int reg = 0; reg < 16; reg++) {
int count, actual_reg, actual_imm;
reset_shader_pool();
builder_init(&bld);
func(&bld, reg, imm);
builder_disasm(&bld);
count = sscanf(bld.disasm_output + 10, fmt, &actual_reg, &actual_imm);
if (count != 2 || reg != actual_reg || imm - delta != actual_imm)
test_fail(&bld, "fmt='%s' reg=%d imm=%d:\n ", fmt, reg, imm);
}
}
static void
check_unop_emit_function(const char *fmt,
void (*func)(struct builder *bld, int dst))
{
struct builder bld;
for (int dst = 0; dst < 16; dst++) {
int count, actual_dst;
reset_shader_pool();
builder_init(&bld);
func(&bld, dst);
builder_disasm(&bld);
count = sscanf(bld.disasm_output + 10, fmt, &actual_dst);
if (count != 1 || dst != actual_dst)
test_fail(&bld, "fmt='%s' dst=%d:\n ", fmt, dst);
}
}
static void
check_binop_emit_function(const char *fmt,
void (*func)(struct builder *bld, int dst, int src))
{
struct builder bld;
for (int dst = 0; dst < 16; dst++) {
for (int src = 0; src < 16; src++) {
int count, actual_dst, actual_src;
reset_shader_pool();
builder_init(&bld);
func(&bld, dst, src);
builder_disasm(&bld);
count = sscanf(bld.disasm_output + 10, fmt,
&actual_src, &actual_dst);
if (count != 2 ||
dst != actual_dst || src != actual_src)
test_fail(&bld, "fmt='%s' dst=%d src=%d:\n ", fmt, dst, src);
}
}
}
static void
check_triop_emit_function(const char *fmt,
void (*func)(struct builder *bld, int dst, int src0, int src1))
{
struct builder bld;
for (int dst = 0; dst < 16; dst++)
for (int src0 = 0; src0 < 16; src0++)
for (int src1 = 0; src1 < 16; src1++) {
int count, actual_dst, actual_src0, actual_src1;
reset_shader_pool();
builder_init(&bld);
func(&bld, dst, src0, src1);
builder_disasm(&bld);
count = sscanf(bld.disasm_output + 10,
fmt, &actual_src0, &actual_src1, &actual_dst);
if (count != 3 ||
dst != actual_dst || src0 != actual_src0 || src1 != actual_src1)
test_fail(&bld, "fmt='%s' dst=%d src0=%d src1=%d:\n ",
fmt, dst, src0, src1);
}
}
static void
check_quadop_emit_function(const char *fmt,
void (*func)(struct builder *bld, int dst, int mask, int src0, int src1))
{
struct builder bld;
for (int dst = 0; dst < 16; dst++)
for (int mask = 0; mask < 16; mask++)
for (int src0 = 0; src0 < 16; src0++)
for (int src1 = 0; src1 < 16; src1++) {
int count, actual_dst, actual_mask;
int actual_src0, actual_src1;
reset_shader_pool();
builder_init(&bld);
func(&bld, dst, mask, src0, src1);
builder_disasm(&bld);
count = sscanf(bld.disasm_output + 10,
fmt, &actual_mask,
&actual_src0, &actual_src1, &actual_dst);
if (count != 4 ||
dst != actual_dst || mask != actual_mask ||
src0 != actual_src0 || src1 != actual_src1)
test_fail(&bld, "fmt='%s' dst=%d src0=%d src1=%d:\n ",
fmt, dst, src0, src1);
}
}
static inline void
emit_vpgatherdd_scale1(struct builder *bld, int dst, int index, int mask)
{
builder_emit_vpgatherdd(bld, dst, index, mask, 1, 0);
}
static inline void
emit_vpgatherdd_scale2(struct builder *bld, int dst, int index, int mask)
{
builder_emit_vpgatherdd(bld, dst, index, mask, 2, 0);
}
static inline void
emit_vpgatherdd_scale4(struct builder *bld, int dst, int index, int mask)
{
builder_emit_vpgatherdd(bld, dst, index, mask, 4, 0);
}
static inline void
emit_vpgatherdd_scale1_offset24(struct builder *bld, int dst, int index, int mask)
{
builder_emit_vpgatherdd(bld, dst, index, mask, 1, 24);
}
static inline void
emit_vpmaskmovd(struct builder *bld, int mask, int src)
{
builder_emit_vpmaskmovd(bld, mask, src, 0x300);
}
static inline void
emit_vmovdqa_from_rax(struct builder *bld, int dst)
{
builder_emit_vmovdqa_from_rax(bld, dst, 0);
}
static inline void
emit_vmovdqa_to_rax(struct builder *bld, int src)
{
builder_emit_vmovdqa_from_rax(bld, src, 0);
}
static void
emit_vpmaskmovd_to_rax(struct builder *bld, int src, int mask)
{
builder_emit_vpmaskmovd_to_rax(bld, src, mask, 0);
}
static void
emit_vpmaskmovd_to_rax_20(struct builder *bld, int src, int mask)
{
builder_emit_vpmaskmovd_to_rax(bld, src, mask, 20);
}
static void
emit_vpmaskmovd_to_rax_500(struct builder *bld, int src, int mask)
{
builder_emit_vpmaskmovd_to_rax(bld, src, mask, 500);
}
int main(int argc, char *argv[])
{
check_reg_imm_emit_function("vpbroadcastd 0x%2$x(%%rip),%%ymm%1$d",
builder_emit_vpbroadcastd_rip_relative, 9);
check_reg_imm_emit_function("vmovdqa 0x%2$x(%%rdi),%%ymm%1$d",
builder_emit_m256i_load, 0);
check_reg_imm_emit_function("vmovdqa %%ymm%1$d,0x%2$x(%%rdi)",
builder_emit_m256i_store, 0);
check_reg_imm_emit_function("vmovdqa 0x%2$x(%%rdi),%%xmm%1$d",
builder_emit_m128i_load, 0);
check_reg_imm_emit_function("vmovdqa %%xmm%1$d,0x%2$x(%%rdi)",
builder_emit_m128i_store, 0);
check_reg_imm_emit_function("vpbroadcastd 0x%2$x(%%rdi),%%ymm%1$d",
builder_emit_vpbroadcastd, 0);
check_reg_imm_emit_function("vmovdqa 0x%2$x(%%rip),%%ymm%1$d",
builder_emit_m256i_load_rip_relative, 8);
check_reg_imm_emit_function("vmovd %%xmm%1$d, 0x%2$x(%%rdi)",
builder_emit_u32_store, 0);
check_triop_emit_function("vpaddd %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vpaddd);
check_triop_emit_function("vpsubd %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vpsubd);
check_triop_emit_function("vpmulld %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vpmulld);
check_triop_emit_function("vaddps %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vaddps);
check_triop_emit_function("vmulps %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vmulps);
check_triop_emit_function("vdivps %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vdivps);
check_triop_emit_function("vsubps %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vsubps);
check_triop_emit_function("vpand %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vpand);
check_triop_emit_function("vpandn %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vpandn);
check_triop_emit_function("vpxor %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vpxor);
check_triop_emit_function("vpor %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vpor);
check_triop_emit_function("vpsrlvd %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vpsrlvd);
check_triop_emit_function("vpsravd %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vpsravd);
check_triop_emit_function("vpsllvd %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vpsllvd);
check_triop_emit_function("vfmadd132ps %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vfmadd132ps);
check_triop_emit_function("vfmadd231ps %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vfmadd231ps);
check_triop_emit_function("vfnmadd132ps %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vfnmadd132ps);
check_triop_emit_function("vfnmadd231ps %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vfnmadd231ps);
check_triop_emit_function("vpgatherdd %%ymm%2$d,(%%rax,%%ymm%1$d,1),%%ymm%3$d", emit_vpgatherdd_scale1);
check_triop_emit_function("vpgatherdd %%ymm%2$d,(%%rax,%%ymm%1$d,2),%%ymm%3$d", emit_vpgatherdd_scale2);
check_triop_emit_function("vpgatherdd %%ymm%2$d,(%%rax,%%ymm%1$d,4),%%ymm%3$d", emit_vpgatherdd_scale4);
check_triop_emit_function("vpgatherdd %%ymm%2$d,0x18(%%rax,%%ymm%1$d,1),%%ymm%3$d", emit_vpgatherdd_scale1_offset24);
check_triop_emit_function("vpsrld $0x%2$x,%%ymm%1$d,%%ymm%3$d", builder_emit_vpsrld);
check_triop_emit_function("vpslld $0x%2$x,%%ymm%1$d,%%ymm%3$d", builder_emit_vpslld);
check_binop_emit_function("vpabsd %%ymm%d,%%ymm%d", builder_emit_vpabsd);
check_binop_emit_function("vrsqrtps %%ymm%d,%%ymm%d", builder_emit_vrsqrtps);
check_binop_emit_function("vsqrtps %%ymm%d,%%ymm%d", builder_emit_vsqrtps);
check_binop_emit_function("vrcpps %%ymm%d,%%ymm%d", builder_emit_vrcpps);
check_binop_emit_function("vpmaskmovd %%ymm%2$d,%%ymm%1$d,0x300(%%rdi)", emit_vpmaskmovd);
check_binop_emit_function("vpmovsxwd %%xmm%d,%%ymm%d", builder_emit_vpmovsxwd);
check_binop_emit_function("vpmovzxwd %%xmm%d,%%ymm%d", builder_emit_vpmovzxwd);
check_binop_emit_function("vmovdqa %%ymm%d,%%ymm%d", builder_emit_vmovdqa);
check_binop_emit_function("vpmaskmovd %%ymm%2$d,%%ymm%1$d,(%%rax)", emit_vpmaskmovd_to_rax);
check_binop_emit_function("vpmaskmovd %%ymm%2$d,%%ymm%1$d,20(%%rax)", emit_vpmaskmovd_to_rax_20);
check_binop_emit_function("vpmaskmovd %%ymm%2$d,%%ymm%1$d,500(%%rax)", emit_vpmaskmovd_to_rax_500);
/* check_triop_emit_function("vcmpps", builder_emit_vcmpps); */
check_triop_emit_function("vmaxps %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vmaxps);
check_triop_emit_function("vminps %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vminps);
check_triop_emit_function("vpcmpgtd %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vpcmpgtd);
check_triop_emit_function("vpcmpeqd %%ymm%d,%%ymm%d,%%ymm%d", builder_emit_vpcmpeqd);
check_quadop_emit_function("vpblendvb %%ymm%d,%%ymm%d,%%ymm%d,%%ymm%d",
builder_emit_vpblendvb);
check_unop_emit_function("vmovdqa (%%rax),%%ymm%d", emit_vmovdqa_from_rax);
#if 0
/* xmm regs */
check_triop_emit_function("vpackssdw", builder_emit_vpackssdw);
#endif
/* builder_emit_vextractf128 */
return EXIT_SUCCESS;
}
#endif