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Subject[PATCH 70/77] perf annotate: Handle arm64 move instructions
Date
From: Kim Phillips <kim.phillips@arm.com>

Add default handler for non-jump instructions. This really only has an
effect on instructions that compute a PC-relative address, such as
'adrp,' as seen in these couple of examples:

BEFORE: adrp x0, ffff20000aa11000 <kallsyms_token_index+0xce000>
AFTER: adrp x0, kallsyms_token_index+0xce000

BEFORE: adrp x23, ffff20000ae94000 <__per_cpu_load>
AFTER: adrp x23, __per_cpu_load

The implementation is identical to that of s390, but with a slight
adjustment for objdump whitespace propagation (arm64 objdump puts spaces
after commas, whereas s390's presumably doesn't).

The mov__scnprintf() declaration is moved from s390's to arm64's
instructions.c because arm64's gets included before s390's.

Committer testing:

Ran 'perf annotate --stdio2 > /tmp/{before,after}' no diff.

Signed-off-by: Kim Phillips <kim.phillips@arm.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20180827150807.304110d2e9919a17c832ca48@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/arch/arm64/annotate/instructions.c | 59 ++++++++++++++++++++++++++-
tools/perf/arch/s390/annotate/instructions.c | 2 -
2 files changed, 58 insertions(+), 3 deletions(-)

diff --git a/tools/perf/arch/arm64/annotate/instructions.c b/tools/perf/arch/arm64/annotate/instructions.c
index 6688977e4ac7..76c6345a57d5 100644
--- a/tools/perf/arch/arm64/annotate/instructions.c
+++ b/tools/perf/arch/arm64/annotate/instructions.c
@@ -8,6 +8,63 @@ struct arm64_annotate {
jump_insn;
};

+static int arm64_mov__parse(struct arch *arch __maybe_unused,
+ struct ins_operands *ops,
+ struct map_symbol *ms __maybe_unused)
+{
+ char *s = strchr(ops->raw, ','), *target, *endptr;
+
+ if (s == NULL)
+ return -1;
+
+ *s = '\0';
+ ops->source.raw = strdup(ops->raw);
+ *s = ',';
+
+ if (ops->source.raw == NULL)
+ return -1;
+
+ target = ++s;
+ ops->target.raw = strdup(target);
+ if (ops->target.raw == NULL)
+ goto out_free_source;
+
+ ops->target.addr = strtoull(target, &endptr, 16);
+ if (endptr == target)
+ goto out_free_target;
+
+ s = strchr(endptr, '<');
+ if (s == NULL)
+ goto out_free_target;
+ endptr = strchr(s + 1, '>');
+ if (endptr == NULL)
+ goto out_free_target;
+
+ *endptr = '\0';
+ *s = ' ';
+ ops->target.name = strdup(s);
+ *s = '<';
+ *endptr = '>';
+ if (ops->target.name == NULL)
+ goto out_free_target;
+
+ return 0;
+
+out_free_target:
+ zfree(&ops->target.raw);
+out_free_source:
+ zfree(&ops->source.raw);
+ return -1;
+}
+
+static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
+ struct ins_operands *ops);
+
+static struct ins_ops arm64_mov_ops = {
+ .parse = arm64_mov__parse,
+ .scnprintf = mov__scnprintf,
+};
+
static struct ins_ops *arm64__associate_instruction_ops(struct arch *arch, const char *name)
{
struct arm64_annotate *arm = arch->priv;
@@ -21,7 +78,7 @@ static struct ins_ops *arm64__associate_instruction_ops(struct arch *arch, const
else if (!strcmp(name, "ret"))
ops = &ret_ops;
else
- return NULL;
+ ops = &arm64_mov_ops;

arch__associate_ins_ops(arch, name, ops);
return ops;
diff --git a/tools/perf/arch/s390/annotate/instructions.c b/tools/perf/arch/s390/annotate/instructions.c
index cee4e2f7c057..de0dd66dbb48 100644
--- a/tools/perf/arch/s390/annotate/instructions.c
+++ b/tools/perf/arch/s390/annotate/instructions.c
@@ -100,8 +100,6 @@ static int s390_mov__parse(struct arch *arch __maybe_unused,
return -1;
}

-static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
- struct ins_operands *ops);

static struct ins_ops s390_mov_ops = {
.parse = s390_mov__parse,
--
2.14.4
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