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authorChristian Borntraeger <borntraeger@de.ibm.com>2017-04-06 09:51:52 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2017-04-11 15:23:40 -0300
commitd9f8dfa9baf9b6ae1f2f84f887176558ecde5268 (patch)
treee8ac1e09d7c16fb53a3d4525d23d74206add0748 /tools/perf/arch/s390
parente77852b32d6d4430c68c38aaf73efe5650fa25af (diff)
downloadlinux-d9f8dfa9baf9b6ae1f2f84f887176558ecde5268.tar.bz2
perf annotate s390: Implement jump types for perf annotate
Implement simple detection for all kind of jumps and branches. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Andreas Krebbel <krebbel@linux.vnet.ibm.com> Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-s390 <linux-s390@vger.kernel.org> Cc: stable@kernel.org # v4.10+ Link: http://lkml.kernel.org/r/1491465112-45819-3-git-send-email-borntraeger@de.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/arch/s390')
-rw-r--r--tools/perf/arch/s390/annotate/instructions.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/tools/perf/arch/s390/annotate/instructions.c b/tools/perf/arch/s390/annotate/instructions.c
new file mode 100644
index 000000000000..745b4b1b8b21
--- /dev/null
+++ b/tools/perf/arch/s390/annotate/instructions.c
@@ -0,0 +1,30 @@
+static struct ins_ops *s390__associate_ins_ops(struct arch *arch, const char *name)
+{
+ struct ins_ops *ops = NULL;
+
+ /* catch all kind of jumps */
+ if (strchr(name, 'j') ||
+ !strncmp(name, "bct", 3) ||
+ !strncmp(name, "br", 2))
+ ops = &jump_ops;
+ /* override call/returns */
+ if (!strcmp(name, "bras") ||
+ !strcmp(name, "brasl") ||
+ !strcmp(name, "basr"))
+ ops = &call_ops;
+ if (!strcmp(name, "br"))
+ ops = &ret_ops;
+
+ arch__associate_ins_ops(arch, name, ops);
+ return ops;
+}
+
+static int s390__annotate_init(struct arch *arch)
+{
+ if (!arch->initialized) {
+ arch->initialized = true;
+ arch->associate_instruction_ops = s390__associate_ins_ops;
+ }
+
+ return 0;
+}