From 38ab60132b0d477e19d841daed701b491c20b465 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 1 Apr 2024 14:08:03 -0700 Subject: perf script: Support 32bit code under 64bit OS with capstone Use the DSO to resolve whether an IP is 32bit or 64bit and use that to configure capstone to the correct mode. This allows to correctly disassemble 32bit code under a 64bit OS. % cat > loop.c volatile int var; int main(void) { int i; for (i = 0; i < 100000; i++) var++; } % gcc -m32 -o loop loop.c % perf record -e cycles:u ./loop % perf script -F +disasm loop 82665 1833176.618023: 1 cycles:u: f7eed500 _start+0x0 (/usr/lib/ld-linux.so.2) movl %esp, %eax loop 82665 1833176.618029: 1 cycles:u: f7eed500 _start+0x0 (/usr/lib/ld-linux.so.2) movl %esp, %eax loop 82665 1833176.618031: 7 cycles:u: f7eed500 _start+0x0 (/usr/lib/ld-linux.so.2) movl %esp, %eax loop 82665 1833176.618034: 91 cycles:u: f7eed500 _start+0x0 (/usr/lib/ld-linux.so.2) movl %esp, %eax loop 82665 1833176.618036: 1242 cycles:u: f7eed500 _start+0x0 (/usr/lib/ld-linux.so.2) movl %esp, %eax Reviewed-by: Adrian Hunter Acked-by: Thomas Richter Signed-off-by: Andi Kleen Link: https://lore.kernel.org/r/20240401210925.209671-2-ak@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-script.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'tools/perf/builtin-script.c') diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 6a274e27b108..a711bedace47 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -1517,7 +1517,8 @@ void script_fetch_insn(struct perf_sample *sample, struct thread *thread, static int perf_sample__fprintf_insn(struct perf_sample *sample, struct perf_event_attr *attr, struct thread *thread, - struct machine *machine, FILE *fp) + struct machine *machine, FILE *fp, + struct addr_location *al) { int printed = 0; @@ -1531,7 +1532,7 @@ static int perf_sample__fprintf_insn(struct perf_sample *sample, } if (PRINT_FIELD(DISASM) && sample->insn_len) { printed += fprintf(fp, "\t\t"); - printed += sample__fprintf_insn_asm(sample, thread, machine, fp); + printed += sample__fprintf_insn_asm(sample, thread, machine, fp, al); } if (PRINT_FIELD(BRSTACKINSN) || PRINT_FIELD(BRSTACKINSNLEN)) printed += perf_sample__fprintf_brstackinsn(sample, thread, attr, machine, fp); @@ -1606,7 +1607,7 @@ static int perf_sample__fprintf_bts(struct perf_sample *sample, if (print_srcline_last) printed += map__fprintf_srcline(al->map, al->addr, "\n ", fp); - printed += perf_sample__fprintf_insn(sample, attr, thread, machine, fp); + printed += perf_sample__fprintf_insn(sample, attr, thread, machine, fp, al); printed += fprintf(fp, "\n"); if (PRINT_FIELD(SRCCODE)) { int ret = map__fprintf_srccode(al->map, al->addr, stdout, @@ -2259,7 +2260,7 @@ static void process_event(struct perf_script *script, if (evsel__is_bpf_output(evsel) && PRINT_FIELD(BPF_OUTPUT)) perf_sample__fprintf_bpf_output(sample, fp); - perf_sample__fprintf_insn(sample, attr, thread, machine, fp); + perf_sample__fprintf_insn(sample, attr, thread, machine, fp, al); if (PRINT_FIELD(PHYS_ADDR)) fprintf(fp, "%16" PRIx64, sample->phys_addr); -- cgit v1.2.3