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perf annotate: Mark jump instructions with no offset

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I.e. jumps that go to code outside the current function, that is denoted
in objdump -dS as:

   399f877a9f: jne    399f87bcf4 <_L_lock_5154>

I.e. without the + after the name of the current function, like in:

   399f877aa5: jmp    399f877ab2 <_int_free+0x412>

The browser will use that info to avoid drawing connectors to the start
of the function, since ops.target.addr was zero.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-xrn35g2mlawz1ydo1p73w3q6@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2012-04-25 14:16:03 -03:00
parent 44d1a3edfb
commit fb29fa58e3
2 changed files with 12 additions and 3 deletions
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7
tools/perf/util/annotate.c
View File

@ -75,10 +75,13 @@ static int jump__parse(struct ins_operands *ops)
{
const char *s = strchr(ops->raw, '+');
if (s++ == NULL)
return -1;
ops->target.addr = strtoll(ops->raw, NULL, 16);
if (s++ != NULL)
ops->target.offset = strtoll(s, NULL, 16);
else
ops->target.offset = UINT64_MAX;
return 0;
}

6
tools/perf/util/annotate.h
View File

@ -2,6 +2,7 @@
#define __PERF_ANNOTATE_H
#include <stdbool.h>
#include <stdint.h>
#include "types.h"
#include "symbol.h"
#include <linux/list.h>
@ -41,6 +42,11 @@ struct disasm_line {
struct ins_operands ops;
};
static inline bool disasm_line__has_offset(const struct disasm_line *dl)
{
return dl->ops.target.offset != UINT64_MAX;
}
void disasm_line__free(struct disasm_line *dl);
struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos);
size_t disasm__fprintf(struct list_head *head, FILE *fp);