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Subject[PATCH v2] perf annotate mips: Add perf arch instructions annotate handlers
Date
From: Dengcheng Zhu <dzhu@wavecomp.com>

Support the MIPS architecture using the ins_ops association
method. With this patch, perf-annotate can work well on MIPS.

Testing it with a perf.data file collected on a mips machine:
$./perf annotate -i perf.data

: Disassembly of section .text:
:
: 00000000000be6a0 <get_next_seq>:
: get_next_seq():
0.00 : be6a0: lw v0,0(a0)
0.00 : be6a4: daddiu sp,sp,-128
0.00 : be6a8: ld a7,72(a0)
0.00 : be6ac: gssq s5,s4,80(sp)
0.00 : be6b0: gssq s1,s0,48(sp)
0.00 : be6b4: gssq s8,gp,112(sp)
0.00 : be6b8: gssq s7,s6,96(sp)
0.00 : be6bc: gssq s3,s2,64(sp)
0.00 : be6c0: sd a3,0(sp)
0.00 : be6c4: move s0,a0
0.00 : be6c8: sd v0,32(sp)
0.00 : be6cc: sd a5,8(sp)
0.00 : be6d0: sd zero,8(a0)
0.00 : be6d4: sd a6,16(sp)
0.00 : be6d8: ld s2,48(a0)
8.53 : be6dc: ld s1,40(a0)
9.42 : be6e0: ld v1,32(a0)
0.00 : be6e4: nop
0.00 : be6e8: ld s4,24(a0)
0.00 : be6ec: ld s5,16(a0)
0.00 : be6f0: sd a7,40(sp)
10.11 : be6f4: ld s6,64(a0)

...

The original patch link:
https://lore.kernel.org/patchwork/patch/1180480/

Signed-off-by: Dengcheng Zhu <dzhu@wavecomp.com>
Signed-off-by: Peng Fan <fanpeng@loongson.cn>

[fanpeng@loongson.cn: Add missing "bgtzl", "bltzl",
"bgezl", "blezl", "beql" and "bnel" for pre-R6processors]
---
tools/perf/arch/mips/Build | 2 +-
tools/perf/arch/mips/annotate/instructions.c | 46 ++++++++++++++++++++++++++++
tools/perf/util/annotate.c | 8 +++++
3 files changed, 55 insertions(+), 1 deletion(-)
create mode 100644 tools/perf/arch/mips/annotate/instructions.c

diff --git a/tools/perf/arch/mips/Build b/tools/perf/arch/mips/Build
index 1bb8bf6..e4e5f33 100644
--- a/tools/perf/arch/mips/Build
+++ b/tools/perf/arch/mips/Build
@@ -1 +1 @@
-# empty
+perf-y += util/
diff --git a/tools/perf/arch/mips/annotate/instructions.c b/tools/perf/arch/mips/annotate/instructions.c
new file mode 100644
index 0000000..340993f
--- /dev/null
+++ b/tools/perf/arch/mips/annotate/instructions.c
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0
+
+static
+struct ins_ops *mips__associate_ins_ops(struct arch *arch, const char *name)
+{
+ struct ins_ops *ops = NULL;
+
+ if (!strncmp(name, "bal", 3) ||
+ !strncmp(name, "bgezal", 6) ||
+ !strncmp(name, "bltzal", 6) ||
+ !strncmp(name, "bgtzal", 6) ||
+ !strncmp(name, "blezal", 6) ||
+ !strncmp(name, "beqzal", 6) ||
+ !strncmp(name, "bnezal", 6) ||
+ !strncmp(name, "bgtzl", 5) ||
+ !strncmp(name, "bltzl", 5) ||
+ !strncmp(name, "bgezl", 5) ||
+ !strncmp(name, "blezl", 5) ||
+ !strncmp(name, "jialc", 5) ||
+ !strncmp(name, "beql", 4) ||
+ !strncmp(name, "bnel", 4) ||
+ !strncmp(name, "jal", 3))
+ ops = &call_ops;
+ else if (!strncmp(name, "jr", 2))
+ ops = &ret_ops;
+ else if (name[0] == 'j' || name[0] == 'b')
+ ops = &jump_ops;
+ else
+ return NULL;
+
+ arch__associate_ins_ops(arch, name, ops);
+
+ return ops;
+}
+
+static
+int mips__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
+{
+ if (!arch->initialized) {
+ arch->associate_instruction_ops = mips__associate_ins_ops;
+ arch->initialized = true;
+ arch->objdump.comment_char = '#';
+ }
+
+ return 0;
+}
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 0a1fcf7..80a4a3d 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -152,6 +152,7 @@ static int arch__associate_ins_ops(struct arch* arch, const char *name, struct i
#include "arch/arm/annotate/instructions.c"
#include "arch/arm64/annotate/instructions.c"
#include "arch/csky/annotate/instructions.c"
+#include "arch/mips/annotate/instructions.c"
#include "arch/x86/annotate/instructions.c"
#include "arch/powerpc/annotate/instructions.c"
#include "arch/s390/annotate/instructions.c"
@@ -175,6 +176,13 @@ static struct arch architectures[] = {
.init = csky__annotate_init,
},
{
+ .name = "mips",
+ .init = mips__annotate_init,
+ .objdump = {
+ .comment_char = '#',
+ },
+ },
+ {
.name = "x86",
.init = x86__annotate_init,
.instructions = x86__instructions,
--
2.1.0
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