tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Instruction binary disassembler based on capstone.
4 *
5 * Author(s): Changbin Du <changbin.du@huawei.com>
6 */
7#include <inttypes.h>
8#include <string.h>
9#include <stdbool.h>
10#include "capstone.h"
11#include "debug.h"
12#include "sample.h"
13#include "symbol.h"
14#include "machine.h"
15#include "thread.h"
16#include "print_insn.h"
17#include "dump-insn.h"
18#include "map.h"
19#include "dso.h"
20
21size_t sample__fprintf_insn_raw(struct perf_sample *sample, FILE *fp)
22{
23 int printed = 0;
24
25 for (int i = 0; i < sample->insn_len; i++) {
26 printed += fprintf(fp, "%02x", (unsigned char)sample->insn[i]);
27 if (sample->insn_len - i > 1)
28 printed += fprintf(fp, " ");
29 }
30 return printed;
31}
32
33static bool is64bitip(struct machine *machine, struct addr_location *al)
34{
35 const struct dso *dso = al->map ? map__dso(al->map) : NULL;
36
37 if (dso)
38 return dso__is_64_bit(dso);
39
40 return machine__is(machine, "x86_64") ||
41 machine__normalized_is(machine, "arm64") ||
42 machine__normalized_is(machine, "s390");
43}
44
45ssize_t fprintf_insn_asm(struct machine *machine, struct thread *thread, u8 cpumode,
46 bool is64bit, const uint8_t *code, size_t code_size,
47 uint64_t ip, int *lenp, int print_opts, FILE *fp)
48{
49 return capstone__fprintf_insn_asm(machine, thread, cpumode, is64bit, code, code_size,
50 ip, lenp, print_opts, fp);
51}
52
53size_t sample__fprintf_insn_asm(struct perf_sample *sample, struct thread *thread,
54 struct machine *machine, FILE *fp,
55 struct addr_location *al)
56{
57 bool is64bit = is64bitip(machine, al);
58 ssize_t printed;
59
60 printed = fprintf_insn_asm(machine, thread, sample->cpumode, is64bit,
61 (uint8_t *)sample->insn, sample->insn_len,
62 sample->ip, NULL, 0, fp);
63 if (printed < 0)
64 return sample__fprintf_insn_raw(sample, fp);
65
66 return printed;
67}