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
|
/*
* Copyright © 2014 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 "brw_cfg.h"
#include "brw_eu.h"
#include "common/gen_debug.h"
#include "intel_asm_annotation.h"
#include "compiler/nir/nir.h"
__attribute__((weak)) void nir_print_instr(const nir_instr *instr, FILE *fp) {}
void
dump_assembly(void *assembly, int num_annotations, struct annotation *annotation,
const struct gen_device_info *devinfo)
{
const char *last_annotation_string = NULL;
const void *last_annotation_ir = NULL;
for (int i = 0; i < num_annotations; i++) {
int start_offset = annotation[i].offset;
int end_offset = annotation[i + 1].offset;
if (annotation[i].block_start) {
fprintf(stderr, " START B%d", annotation[i].block_start->num);
foreach_list_typed(struct bblock_link, predecessor_link, link,
&annotation[i].block_start->parents) {
struct bblock_t *predecessor_block = predecessor_link->block;
fprintf(stderr, " <-B%d", predecessor_block->num);
}
fprintf(stderr, " (%u cycles)\n", annotation[i].block_start->cycle_count);
}
if (last_annotation_ir != annotation[i].ir) {
last_annotation_ir = annotation[i].ir;
if (last_annotation_ir) {
fprintf(stderr, " ");
nir_print_instr(annotation[i].ir, stderr);
fprintf(stderr, "\n");
}
}
if (last_annotation_string != annotation[i].annotation) {
last_annotation_string = annotation[i].annotation;
if (last_annotation_string)
fprintf(stderr, " %s\n", last_annotation_string);
}
brw_disassemble(devinfo, assembly, start_offset, end_offset, stderr);
if (annotation[i].error) {
fputs(annotation[i].error, stderr);
}
if (annotation[i].block_end) {
fprintf(stderr, " END B%d", annotation[i].block_end->num);
foreach_list_typed(struct bblock_link, successor_link, link,
&annotation[i].block_end->children) {
struct bblock_t *successor_block = successor_link->block;
fprintf(stderr, " ->B%d", successor_block->num);
}
fprintf(stderr, "\n");
}
}
fprintf(stderr, "\n");
}
static bool
annotation_array_ensure_space(struct annotation_info *annotation)
{
if (annotation->ann_size <= annotation->ann_count) {
int old_size = annotation->ann_size;
annotation->ann_size = MAX2(1024, annotation->ann_size * 2);
annotation->ann = reralloc(annotation->mem_ctx, annotation->ann,
struct annotation, annotation->ann_size);
if (!annotation->ann)
return false;
memset(annotation->ann + old_size, 0,
(annotation->ann_size - old_size) * sizeof(struct annotation));
}
return true;
}
void annotate(const struct gen_device_info *devinfo,
struct annotation_info *annotation, const struct cfg_t *cfg,
struct backend_instruction *inst, unsigned offset)
{
if (annotation->mem_ctx == NULL)
annotation->mem_ctx = ralloc_context(NULL);
if (!annotation_array_ensure_space(annotation))
return;
struct annotation *ann = &annotation->ann[annotation->ann_count++];
ann->offset = offset;
if ((INTEL_DEBUG & DEBUG_ANNOTATION) != 0) {
ann->ir = inst->ir;
ann->annotation = inst->annotation;
}
if (bblock_start(cfg->blocks[annotation->cur_block]) == inst) {
ann->block_start = cfg->blocks[annotation->cur_block];
}
/* There is no hardware DO instruction on Gen6+, so since DO always
* starts a basic block, we need to set the .block_start of the next
* instruction's annotation with a pointer to the bblock started by
* the DO.
*
* There's also only complication from emitting an annotation without
* a corresponding hardware instruction to disassemble.
*/
if (devinfo->gen >= 6 && inst->opcode == BRW_OPCODE_DO) {
annotation->ann_count--;
}
if (bblock_end(cfg->blocks[annotation->cur_block]) == inst) {
ann->block_end = cfg->blocks[annotation->cur_block];
annotation->cur_block++;
}
}
void
annotation_finalize(struct annotation_info *annotation,
unsigned next_inst_offset)
{
if (!annotation->ann_count)
return;
if (annotation->ann_count == annotation->ann_size) {
annotation->ann = reralloc(annotation->mem_ctx, annotation->ann,
struct annotation, annotation->ann_size + 1);
}
annotation->ann[annotation->ann_count].offset = next_inst_offset;
}
void
annotation_insert_error(struct annotation_info *annotation, unsigned offset,
const char *error)
{
if (!annotation->ann_count)
return;
/* We may have to split an annotation, so ensure we have enough space
* allocated for that case up front.
*/
if (!annotation_array_ensure_space(annotation))
return;
assume(annotation->ann_count > 0);
for (int i = 0; i < annotation->ann_count; i++) {
struct annotation *cur = &annotation->ann[i];
struct annotation *next = &annotation->ann[i + 1];
if (next->offset <= offset)
continue;
if (offset + sizeof(brw_inst) != next->offset) {
memmove(next, cur,
(annotation->ann_count - i + 2) * sizeof(struct annotation));
cur->error = NULL;
cur->error_length = 0;
cur->block_end = NULL;
next->offset = offset + sizeof(brw_inst);
next->block_start = NULL;
annotation->ann_count++;
}
if (cur->error)
ralloc_strcat(&cur->error, error);
else
cur->error = ralloc_strdup(annotation->mem_ctx, error);
return;
}
}
|
