[PATCH 4/8] perf annotate: Augment lock instruction output
From: Arnaldo Carvalho de Melo
Date: Sat May 12 2012 - 15:55:37 EST
From: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
It just chops off the 'lock' and uses the ins__find, etc machinery to
call instruction specific parsers/beautifiers.
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-4913ba2dzakz5rivgumosqbh@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/annotate.c | 127 ++++++++++++++++++++++++++++++++++----------
tools/perf/util/annotate.h | 16 ++++--
2 files changed, 109 insertions(+), 34 deletions(-)
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index a6109dc..1dce098 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -18,6 +18,9 @@
const char *disassembler_style;
+static struct ins *ins__find(const char *name);
+static int disasm_line__parse(char *line, char **namep, char **rawp);
+
static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
struct ins_operands *ops)
{
@@ -147,6 +150,53 @@ static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
return 0;
}
+static int lock__parse(struct ins_operands *ops)
+{
+ char *name;
+
+ ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
+ if (ops->locked.ops == NULL)
+ return 0;
+
+ if (disasm_line__parse(ops->raw, &name, &ops->locked.ops->raw) < 0)
+ goto out_free_ops;
+
+ ops->locked.ins = ins__find(name);
+ if (ops->locked.ins == NULL)
+ goto out_free_ops;
+
+ if (!ops->locked.ins->ops)
+ return 0;
+
+ if (ops->locked.ins->ops->parse)
+ ops->locked.ins->ops->parse(ops->locked.ops);
+
+ return 0;
+
+out_free_ops:
+ free(ops->locked.ops);
+ ops->locked.ops = NULL;
+ return 0;
+}
+
+static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
+ struct ins_operands *ops)
+{
+ int printed;
+
+ if (ops->locked.ins == NULL)
+ return ins__raw_scnprintf(ins, bf, size, ops);
+
+ printed = scnprintf(bf, size, "%-6.6s ", ins->name);
+ return printed + ins__scnprintf(ops->locked.ins, bf + printed,
+ size - printed, ops->locked.ops);
+}
+
+static struct ins_ops lock_ops = {
+ .parse = lock__parse,
+ .scnprintf = lock__scnprintf,
+};
+
static int mov__parse(struct ins_operands *ops)
{
char *s = strchr(ops->raw, ','), *target, *comment, prev;
@@ -265,6 +315,7 @@ static struct ins instructions[] = {
{ .name = "addq", .ops = &mov_ops, },
{ .name = "addw", .ops = &mov_ops, },
{ .name = "and", .ops = &mov_ops, },
+ { .name = "bts", .ops = &mov_ops, },
{ .name = "call", .ops = &call_ops, },
{ .name = "callq", .ops = &call_ops, },
{ .name = "cmp", .ops = &mov_ops, },
@@ -314,6 +365,7 @@ static struct ins instructions[] = {
{ .name = "js", .ops = &jump_ops, },
{ .name = "jz", .ops = &jump_ops, },
{ .name = "lea", .ops = &mov_ops, },
+ { .name = "lock", .ops = &lock_ops, },
{ .name = "mov", .ops = &mov_ops, },
{ .name = "movb", .ops = &mov_ops, },
{ .name = "movdqa",.ops = &mov_ops, },
@@ -330,6 +382,7 @@ static struct ins instructions[] = {
{ .name = "test", .ops = &mov_ops, },
{ .name = "testb", .ops = &mov_ops, },
{ .name = "testl", .ops = &mov_ops, },
+ { .name = "xadd", .ops = &mov_ops, },
};
static int ins__cmp(const void *name, const void *insp)
@@ -420,6 +473,44 @@ static void disasm_line__init_ins(struct disasm_line *dl)
dl->ins->ops->parse(&dl->ops);
}
+static int disasm_line__parse(char *line, char **namep, char **rawp)
+{
+ char *name = line, tmp;
+
+ while (isspace(name[0]))
+ ++name;
+
+ if (name[0] == '\0')
+ return -1;
+
+ *rawp = name + 1;
+
+ while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
+ ++*rawp;
+
+ tmp = (*rawp)[0];
+ (*rawp)[0] = '\0';
+ *namep = strdup(name);
+
+ if (*namep == NULL)
+ goto out_free_name;
+
+ (*rawp)[0] = tmp;
+
+ if ((*rawp)[0] != '\0') {
+ (*rawp)++;
+ while (isspace((*rawp)[0]))
+ ++(*rawp);
+ }
+
+ return 0;
+
+out_free_name:
+ free(*namep);
+ *namep = NULL;
+ return -1;
+}
+
static struct disasm_line *disasm_line__new(s64 offset, char *line, size_t privsize)
{
struct disasm_line *dl = zalloc(sizeof(*dl) + privsize);
@@ -431,35 +522,9 @@ static struct disasm_line *disasm_line__new(s64 offset, char *line, size_t privs
goto out_delete;
if (offset != -1) {
- char *name = dl->line, tmp;
-
- while (isspace(name[0]))
- ++name;
-
- if (name[0] == '\0')
- goto out_delete;
-
- dl->ops.raw = name + 1;
-
- while (dl->ops.raw[0] != '\0' &&
- !isspace(dl->ops.raw[0]))
- ++dl->ops.raw;
-
- tmp = dl->ops.raw[0];
- dl->ops.raw[0] = '\0';
- dl->name = strdup(name);
-
- if (dl->name == NULL)
+ if (disasm_line__parse(dl->line, &dl->name, &dl->ops.raw) < 0)
goto out_free_line;
- dl->ops.raw[0] = tmp;
-
- if (dl->ops.raw[0] != '\0') {
- dl->ops.raw++;
- while (isspace(dl->ops.raw[0]))
- ++dl->ops.raw;
- }
-
disasm_line__init_ins(dl);
}
}
@@ -477,8 +542,12 @@ void disasm_line__free(struct disasm_line *dl)
{
free(dl->line);
free(dl->name);
- free(dl->ops.source.raw);
- free(dl->ops.source.name);
+ if (dl->ins && dl->ins->ops == &lock_ops) {
+ free(dl->ops.locked.ops);
+ } else {
+ free(dl->ops.source.raw);
+ free(dl->ops.source.name);
+ }
free(dl->ops.target.raw);
free(dl->ops.target.name);
free(dl);
diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h
index 066d31d..b79d326 100644
--- a/tools/perf/util/annotate.h
+++ b/tools/perf/util/annotate.h
@@ -18,11 +18,17 @@ struct ins_operands {
u64 addr;
u64 offset;
} target;
- struct {
- char *raw;
- char *name;
- u64 addr;
- } source;
+ union {
+ struct {
+ char *raw;
+ char *name;
+ u64 addr;
+ } source;
+ struct {
+ struct ins *ins;
+ struct ins_operands *ops;
+ } locked;
+ };
};
struct ins_ops {
--
1.7.9.2.358.g22243
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/