perf annotate mips: Add perf arch instructions annotate handlers

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>
Cc: Dengcheng Zhu <dzhu@wavecomp.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Xuefeng Li <lixuefeng@loongson.cn>
Cc: linux-mips@vger.kernel.org
[ fanpeng@loongson.cn: Add missing "bgtzl", "bltzl", "bgezl", "blezl", "beql" and "bnel" for pre-R6processors ]
Signed-off-by: Peng Fan <fanpeng@loongson.cn>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/arch/mips/Build b/tools/perf/arch/mips/Build
index 1bb8bf6d7fd4c8d09aea89b47de20fb8bbb61626..e4e5f33c84d862aaba8e05ded73e0c336d6e90bd 100644 (file)
--- 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 (file)
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 6c8575e182ed10a78b8e6476250ccf6be1b7c4d0..e52053a6ad425c6525ed2517ab87391091a44619 100644 (file)
--- 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"
@@ -174,6 +175,13 @@ static struct arch architectures[] = {
                .name = "csky",
                .init = csky__annotate_init,
        },
+       {
+               .name = "mips",
+               .init = mips__annotate_init,
+               .objdump = {
+                       .comment_char = '#',
+               },
+       },
        {
                .name = "x86",
                .init = x86__annotate_init,