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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-12-06 23:07:13 +0000 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-12-07 18:13:00 -0300 |
| commit | cfef25b8daf7e4b49c84e174a904af9d89dc7c46 (patch) | |
| tree | 53148198f44c9a68efd82fca60133d0ba4903406 /tools/perf | |
| parent | c8280cec2a196f2ffea83dd755b17eb020ca1b83 (diff) | |
| download | op-kernel-dev-cfef25b8daf7e4b49c84e174a904af9d89dc7c46.zip op-kernel-dev-cfef25b8daf7e4b49c84e174a904af9d89dc7c46.tar.gz | |
perf annotate: ARM support
Add basic support to parse ARM assembly.
This:
* enables perf to correctly show the disassembly, rather than chopping
some constants off at the '#' (which is not a comment character on
ARM).
* allows perf to identify ARM instructions that branch to other parts
within the same function, thereby properly annotating them.
* allows perf to identify function calls, allowing called functions to
be followed in the annotated view.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Will Deacon <will.deacon@arm.com>
Link: http://lkml.kernel.org/n/tip-owp1uj0nmcgfrlppfyeetuyf@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/util/annotate.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index 1dd1949..b795b69 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -65,6 +65,11 @@ static int call__parse(struct ins_operands *ops) name++; +#ifdef __arm__ + if (strchr(name, '+')) + return -1; +#endif + tok = strchr(name, '>'); if (tok == NULL) return -1; @@ -246,7 +251,11 @@ static int mov__parse(struct ins_operands *ops) return -1; target = ++s; +#ifdef __arm__ + comment = strchr(s, ';'); +#else comment = strchr(s, '#'); +#endif if (comment != NULL) s = comment - 1; @@ -354,6 +363,20 @@ static struct ins instructions[] = { { .name = "addq", .ops = &mov_ops, }, { .name = "addw", .ops = &mov_ops, }, { .name = "and", .ops = &mov_ops, }, +#ifdef __arm__ + { .name = "b", .ops = &jump_ops, }, // might also be a call + { .name = "bcc", .ops = &jump_ops, }, + { .name = "bcs", .ops = &jump_ops, }, + { .name = "beq", .ops = &jump_ops, }, + { .name = "bge", .ops = &jump_ops, }, + { .name = "bgt", .ops = &jump_ops, }, + { .name = "bhi", .ops = &jump_ops, }, + { .name = "bl", .ops = &call_ops, }, + { .name = "blt", .ops = &jump_ops, }, + { .name = "bls", .ops = &jump_ops, }, + { .name = "blx", .ops = &call_ops, }, + { .name = "bne", .ops = &jump_ops, }, +#endif { .name = "bts", .ops = &mov_ops, }, { .name = "call", .ops = &call_ops, }, { .name = "callq", .ops = &call_ops, }, |
