1 /*
2 * Copyright © 2014 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 #include <stdlib.h>
25
26 #include "brw_context.h"
27 #include "brw_inst.h"
28 #include "brw_eu.h"
29
30 #include "gen_disasm.h"
31
32 uint64_t INTEL_DEBUG;
33
34 struct gen_disasm {
35 struct gen_device_info devinfo;
36 };
37
38 static bool
is_send(uint32_t opcode)39 is_send(uint32_t opcode)
40 {
41 return (opcode == BRW_OPCODE_SEND ||
42 opcode == BRW_OPCODE_SENDC ||
43 opcode == BRW_OPCODE_SENDS ||
44 opcode == BRW_OPCODE_SENDSC );
45 }
46
47 void
gen_disasm_disassemble(struct gen_disasm * disasm,void * assembly,int start,FILE * out)48 gen_disasm_disassemble(struct gen_disasm *disasm, void *assembly,
49 int start, FILE *out)
50 {
51 struct gen_device_info *devinfo = &disasm->devinfo;
52 bool dump_hex = false;
53 int offset = start;
54
55 /* This loop exits when send-with-EOT or when opcode is 0 */
56 while (true) {
57 brw_inst *insn = assembly + offset;
58 brw_inst uncompacted;
59 bool compacted = brw_inst_cmpt_control(devinfo, insn);
60 if (0)
61 fprintf(out, "0x%08x: ", offset);
62
63 if (compacted) {
64 brw_compact_inst *compacted = (void *)insn;
65 if (dump_hex) {
66 fprintf(out, "0x%08x 0x%08x ",
67 ((uint32_t *)insn)[1],
68 ((uint32_t *)insn)[0]);
69 }
70
71 brw_uncompact_instruction(devinfo, &uncompacted, compacted);
72 insn = &uncompacted;
73 offset += 8;
74 } else {
75 if (dump_hex) {
76 fprintf(out, "0x%08x 0x%08x 0x%08x 0x%08x ",
77 ((uint32_t *)insn)[3],
78 ((uint32_t *)insn)[2],
79 ((uint32_t *)insn)[1],
80 ((uint32_t *)insn)[0]);
81 }
82 offset += 16;
83 }
84
85 brw_disassemble_inst(out, devinfo, insn, compacted);
86
87 /* Simplistic, but efficient way to terminate disasm */
88 uint32_t opcode = brw_inst_opcode(devinfo, insn);
89 if (opcode == 0 || (is_send(opcode) && brw_inst_eot(devinfo, insn))) {
90 break;
91 }
92 }
93 }
94
95 struct gen_disasm *
gen_disasm_create(int pciid)96 gen_disasm_create(int pciid)
97 {
98 struct gen_disasm *gd;
99
100 gd = malloc(sizeof *gd);
101 if (gd == NULL)
102 return NULL;
103
104 if (!gen_get_device_info(pciid, &gd->devinfo)) {
105 free(gd);
106 return NULL;
107 }
108
109 brw_init_compaction_tables(&gd->devinfo);
110
111 return gd;
112 }
113
114 void
gen_disasm_destroy(struct gen_disasm * disasm)115 gen_disasm_destroy(struct gen_disasm *disasm)
116 {
117 free(disasm);
118 }
119