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d812044688
Support capstone output for the '-F +brstackinsn' branch dump.
The new output is enabled with the new field 'brstackdisasm'.
This was possible before with --xed, but now also allow it for users
that don't have xed using the builtin capstone support.
Before:
perf record -b emacs -Q --batch '()'
perf script -F +brstackinsn
...
emacs 55778 1814366.755945: 151564 cycles:P: 7f0ab2d17192 intel_check_word.constprop.0+0x162 (/usr/lib64/ld-linux-x86-64.s> intel_check_word.constprop.0+237:
00007f0ab2d1711d insn: 75 e6 # PRED 3 cycles [3]
00007f0ab2d17105 insn: 73 51
00007f0ab2d17107 insn: 48 89 c1
00007f0ab2d1710a insn: 48 39 ca
00007f0ab2d1710d insn: 73 96
00007f0ab2d1710f insn: 48 8d 04 11
00007f0ab2d17113 insn: 48 d1 e8
00007f0ab2d17116 insn: 49 8d 34 c1
00007f0ab2d1711a insn: 44 3a 06
00007f0ab2d1711d insn: 75 e6 # PRED 3 cycles [6] 3.00 IPC
00007f0ab2d17105 insn: 73 51 # PRED 1 cycles [7] 1.00 IPC
00007f0ab2d17158 insn: 48 8d 50 01
00007f0ab2d1715c insn: eb 92 # PRED 1 cycles [8] 2.00 IPC
00007f0ab2d170f0 insn: 48 39 ca
00007f0ab2d170f3 insn: 73 b0 # PRED 1 cycles [9] 2.00 IPC
After (perf must be compiled with capstone):
perf script -F +brstackdisasm
...
emacs 55778 1814366.755945: 151564 cycles:P: 7f0ab2d17192 intel_check_word.constprop.0+0x162 (/usr/lib64/ld-linux-x86-64.s> intel_check_word.constprop.0+237:
00007f0ab2d1711d jne intel_check_word.constprop.0+0xd5 # PRED 3 cycles [3]
00007f0ab2d17105 jae intel_check_word.constprop.0+0x128
00007f0ab2d17107 movq %rax, %rcx
00007f0ab2d1710a cmpq %rcx, %rdx
00007f0ab2d1710d jae intel_check_word.constprop.0+0x75
00007f0ab2d1710f leaq (%rcx, %rdx), %rax
00007f0ab2d17113 shrq $1, %rax
00007f0ab2d17116 leaq (%r9, %rax, 8), %rsi
00007f0ab2d1711a cmpb (%rsi), %r8b
00007f0ab2d1711d jne intel_check_word.constprop.0+0xd5 # PRED 3 cycles [6] 3.00 IPC
00007f0ab2d17105 jae intel_check_word.constprop.0+0x128 # PRED 1 cycles [7] 1.00 IPC
00007f0ab2d17158 leaq 1(%rax), %rdx
00007f0ab2d1715c jmp intel_check_word.constprop.0+0xc0 # PRED 1 cycles [8] 2.00 IPC
00007f0ab2d170f0 cmpq %rcx, %rdx
00007f0ab2d170f3 jae intel_check_word.constprop.0+0x75 # PRED 1 cycles [9] 2.00 IPC
Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: https://lore.kernel.org/r/20240401210925.209671-3-ak@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
26 lines
528 B
C
26 lines
528 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_DUMP_INSN_H
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#define __PERF_DUMP_INSN_H 1
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#define MAXINSN 15
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#include <linux/types.h>
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struct thread;
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struct perf_insn {
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/* Initialized by callers: */
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struct thread *thread;
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struct machine *machine;
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u8 cpumode;
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bool is64bit;
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int cpu;
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/* Temporary */
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char out[256];
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};
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const char *dump_insn(struct perf_insn *x, u64 ip,
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u8 *inbuf, int inlen, int *lenp);
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int arch_is_branch(const unsigned char *buf, size_t len, int x86_64);
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#endif
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