[PATCH 2/3] perf annotate: Parse x86 SIB addressing properly

From: Namhyung Kim
Date: Thu May 11 2023 - 02:27:38 EST


When the source argument of mov instruction is look like below, it didn't
parse the whole operand and just stopped at the first comma.

mov (%rbx,%rax,1),%rcx

Fix it by checking the parentheses and move it to the closing one.

Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
---
tools/perf/util/annotate.c | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index ca9f0add68f4..6053ddf9c32d 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -550,6 +550,19 @@ static int mov__parse(struct arch *arch, struct ins_operands *ops, struct map_sy
return -1;

*s = '\0';
+
+ /*
+ * x86 SIB addressing has something like 0x8(%rax, %rcx, 1)
+ * then it needs to have the closing parenthesis.
+ */
+ if (strchr(ops->raw, '(')) {
+ *s = ',';
+ s = strchr(ops->raw, ')');
+ if (s == NULL || s[1] != ',')
+ return -1;
+ *++s = '\0';
+ }
+
ops->source.raw = strdup(ops->raw);
*s = ',';

--
2.40.1.521.gf1e218fcd8-goog