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Subject[tip:perf/core] perf annotate: Add csky support
Commit-ID:  aa23aa55166c2865ac430168c4b9d405cf8c6980
Gitweb: https://git.kernel.org/tip/aa23aa55166c2865ac430168c4b9d405cf8c6980
Author: Mao Han <han_mao@c-sky.com>
AuthorDate: Wed, 26 Jun 2019 14:52:19 +0800
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Mon, 1 Jul 2019 22:50:41 -0300

perf annotate: Add csky support

This patch add basic arch initialization and instruction associate
support for the csky CPU architecture.

E.g.:

$ perf annotate --stdio2
Samples: 161 of event 'cpu-clock:pppH', 4000 Hz, Event count (approx.):
40250000, [percent: local period]
test_4() /usr/lib/perf-test/callchain_test
Percent

Disassembly of section .text:

00008420 <test_4>:
test_4():
subi sp, sp, 4
st.w r8, (sp, 0x0)
mov r8, sp
subi sp, sp, 8
subi r3, r8, 4
movi r2, 0
st.w r2, (r3, 0x0)
↓ br 2e
100.00 14: subi r3, r8, 4
ld.w r2, (r3, 0x0)
subi r3, r8, 8
st.w r2, (r3, 0x0)
subi r3, r8, 4
ld.w r3, (r3, 0x0)
addi r2, r3, 1
subi r3, r8, 4
st.w r2, (r3, 0x0)
2e: subi r3, r8, 4
ld.w r2, (r3, 0x0)
lrw r3, 0x98967f // 8598 <main+0x28>
cmplt r3, r2
↑ bf 14
mov r0, r0
mov r0, r0
mov sp, r8
ld.w r8, (sp, 0x0)
addi sp, sp, 4
← rts

Signed-off-by: Mao Han <han_mao@c-sky.com>
Acked-by: Guo Ren <guoren@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-csky@vger.kernel.org
Link: http://lkml.kernel.org/r/d874d7782d9acdad5d98f2f5c4a6fb26fbe41c5d.1561531557.git.han_mao@c-sky.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/arch/csky/annotate/instructions.c | 48 ++++++++++++++++++++++++++++
tools/perf/util/annotate.c | 5 +++
2 files changed, 53 insertions(+)

diff --git a/tools/perf/arch/csky/annotate/instructions.c b/tools/perf/arch/csky/annotate/instructions.c
new file mode 100644
index 000000000000..5337bfb7d5fc
--- /dev/null
+++ b/tools/perf/arch/csky/annotate/instructions.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd.
+
+#include <linux/compiler.h>
+
+static struct ins_ops *csky__associate_ins_ops(struct arch *arch,
+ const char *name)
+{
+ struct ins_ops *ops = NULL;
+
+ /* catch all kind of jumps */
+ if (!strcmp(name, "bt") ||
+ !strcmp(name, "bf") ||
+ !strcmp(name, "bez") ||
+ !strcmp(name, "bnez") ||
+ !strcmp(name, "bnezad") ||
+ !strcmp(name, "bhsz") ||
+ !strcmp(name, "bhz") ||
+ !strcmp(name, "blsz") ||
+ !strcmp(name, "blz") ||
+ !strcmp(name, "br") ||
+ !strcmp(name, "jmpi") ||
+ !strcmp(name, "jmp"))
+ ops = &jump_ops;
+
+ /* catch function call */
+ if (!strcmp(name, "bsr") ||
+ !strcmp(name, "jsri") ||
+ !strcmp(name, "jsr"))
+ ops = &call_ops;
+
+ /* catch function return */
+ if (!strcmp(name, "rts"))
+ ops = &ret_ops;
+
+ if (ops)
+ arch__associate_ins_ops(arch, name, ops);
+ return ops;
+}
+
+static int csky__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
+{
+ arch->initialized = true;
+ arch->objdump.comment_char = '/';
+ arch->associate_instruction_ops = csky__associate_ins_ops;
+
+ return 0;
+}
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 2d08c4b62c63..ec7aaf31c2b2 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -145,6 +145,7 @@ static int arch__associate_ins_ops(struct arch* arch, const char *name, struct i
#include "arch/arc/annotate/instructions.c"
#include "arch/arm/annotate/instructions.c"
#include "arch/arm64/annotate/instructions.c"
+#include "arch/csky/annotate/instructions.c"
#include "arch/x86/annotate/instructions.c"
#include "arch/powerpc/annotate/instructions.c"
#include "arch/s390/annotate/instructions.c"
@@ -163,6 +164,10 @@ static struct arch architectures[] = {
.name = "arm64",
.init = arm64__annotate_init,
},
+ {
+ .name = "csky",
+ .init = csky__annotate_init,
+ },
{
.name = "x86",
.init = x86__annotate_init,
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