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
|
/*
* 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 <stdlib.h>
#include "compiler/brw_inst.h"
#include "compiler/brw_eu.h"
#include "gen_disasm.h"
uint64_t INTEL_DEBUG;
struct gen_disasm {
struct gen_device_info devinfo;
};
static bool
is_send(uint32_t opcode)
{
return (opcode == BRW_OPCODE_SEND ||
opcode == BRW_OPCODE_SENDC ||
opcode == BRW_OPCODE_SENDS ||
opcode == BRW_OPCODE_SENDSC );
}
static int
gen_disasm_find_end(struct gen_disasm *disasm, void *assembly, int start)
{
struct gen_device_info *devinfo = &disasm->devinfo;
int offset = start;
/* This loop exits when send-with-EOT or when opcode is 0 */
while (true) {
brw_inst *insn = assembly + offset;
if (brw_inst_cmpt_control(devinfo, insn)) {
offset += 8;
} else {
offset += 16;
}
/* Simplistic, but efficient way to terminate disasm */
uint32_t opcode = brw_inst_opcode(devinfo, insn);
if (opcode == 0 || (is_send(opcode) && brw_inst_eot(devinfo, insn))) {
break;
}
}
return offset;
}
void
gen_disasm_disassemble(struct gen_disasm *disasm, void *assembly,
int start, FILE *out)
{
struct gen_device_info *devinfo = &disasm->devinfo;
int end = gen_disasm_find_end(disasm, assembly, start);
/* Make a dummy annotation structure that brw_validate_instructions
* can work from.
*/
struct annotation_info annotation_info = {
.ann_count = 1,
.ann_size = 2,
};
annotation_info.mem_ctx = ralloc_context(NULL);
annotation_info.ann = rzalloc_array(annotation_info.mem_ctx,
struct annotation,
annotation_info.ann_size);
annotation_info.ann[0].offset = start;
annotation_info.ann[1].offset = end;
brw_validate_instructions(devinfo, assembly, start, end, &annotation_info);
struct annotation *annotation = annotation_info.ann;
for (int i = 0; i < annotation_info.ann_count; i++) {
int start_offset = annotation[i].offset;
int end_offset = annotation[i + 1].offset;
brw_disassemble(devinfo, assembly, start_offset, end_offset, out);
if (annotation[i].error) {
fputs(annotation[i].error, out);
}
}
ralloc_free(annotation_info.mem_ctx);
}
struct gen_disasm *
gen_disasm_create(int pciid)
{
struct gen_disasm *gd;
gd = malloc(sizeof *gd);
if (gd == NULL)
return NULL;
if (!gen_get_device_info(pciid, &gd->devinfo)) {
free(gd);
return NULL;
}
brw_init_compaction_tables(&gd->devinfo);
return gd;
}
void
gen_disasm_destroy(struct gen_disasm *disasm)
{
free(disasm);
}
|
