perf annotate: Handle arm64 move instructions

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>

diff --git a/tools/perf/arch/arm64/annotate/instructions.c b/tools/perf/arch/arm64/annotate/instructions.c
index 6688977..76c6345 100644 (file)
--- 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 cee4e2f..de0dd66 100644 (file)
--- a/tools/perf/arch/s390/annotate/instructions.c
+++ b/tools/perf/arch/s390/annotate/instructions.c
@@ -100,8 +100,6 @@ out_free_source:
        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,