[PATCH v2 19/21] tools/perf: Convert to insn_decode()

[Borislav Petkov]

From: Borislav Petkov <b...@suse.de>

Simplify code, no functional changes.

Signed-off-by: Borislav Petkov <b...@suse.de>
Cc: Arnaldo Carvalho de Melo <a...@redhat.com>
---
 tools/perf/arch/x86/tests/insn-x86.c            |  9 ++++-----
 tools/perf/arch/x86/util/archinsn.c             |  9 +++++----
 .../intel-pt-decoder/intel-pt-insn-decoder.c    | 17 ++++++++++-------
 3 files changed, 19 insertions(+), 16 deletions(-)

diff --git a/tools/perf/arch/x86/tests/insn-x86.c 
b/tools/perf/arch/x86/tests/insn-x86.c
index 745f29adb14b..6c7970b3acb6 100644
--- a/tools/perf/arch/x86/tests/insn-x86.c
+++ b/tools/perf/arch/x86/tests/insn-x86.c
@@ -95,13 +95,12 @@ static int get_branch(const char *branch_str)
 static int test_data_item(struct test_data *dat, int x86_64)
 {
        struct intel_pt_insn intel_pt_insn;
+       int op, branch, ret;
        struct insn insn;
-       int op, branch;
 
-       insn_init(&insn, dat->data, MAX_INSN_SIZE, x86_64);
-       insn_get_length(&insn);
-
-       if (!insn_complete(&insn)) {
+       ret = insn_decode(&insn, dat->data, MAX_INSN_SIZE,
+                         x86_64 ? INSN_MODE_64 : INSN_MODE_32);
+       if (ret < 0) {
                pr_debug("Failed to decode: %s\n", dat->asm_rep);
                return -1;
        }
diff --git a/tools/perf/arch/x86/util/archinsn.c 
b/tools/perf/arch/x86/util/archinsn.c
index 3e6791531ca5..9fb12e8e67eb 100644
--- a/tools/perf/arch/x86/util/archinsn.c
+++ b/tools/perf/arch/x86/util/archinsn.c
@@ -11,7 +11,7 @@ void arch_fetch_insn(struct perf_sample *sample,
                     struct machine *machine)
 {
        struct insn insn;
-       int len;
+       int len, ret;
        bool is64bit = false;
 
        if (!sample->ip)
@@ -19,8 +19,9 @@ void arch_fetch_insn(struct perf_sample *sample,
        len = thread__memcpy(thread, machine, sample->insn, sample->ip, 
sizeof(sample->insn), &is64bit);
        if (len <= 0)
                return;
-       insn_init(&insn, sample->insn, len, is64bit);
-       insn_get_length(&insn);
-       if (insn_complete(&insn) && insn.length <= len)
+
+       ret = insn_decode(&insn, sample->insn, len,
+                         is64bit ? INSN_MODE_64 : INSN_MODE_32);
+       if (ret >= 0 && insn.length <= len)
                sample->insn_len = insn.length;
 }
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c 
b/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c
index fb8a3558d3d5..56b42545946e 100644
--- a/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c
@@ -158,11 +158,13 @@ int intel_pt_get_insn(const unsigned char *buf, size_t 
len, int x86_64,
                      struct intel_pt_insn *intel_pt_insn)
 {
        struct insn insn;
+       int ret;
 
-       insn_init(&insn, buf, len, x86_64);
-       insn_get_length(&insn);
-       if (!insn_complete(&insn) || insn.length > len)
+       ret = insn_decode(&insn, buf, len,
+                         x86_64 ? INSN_MODE_64 : INSN_MODE_32);
+       if (ret < 0 || insn.length > len)
                return -1;
+
        intel_pt_insn_decoder(&insn, intel_pt_insn);
        if (insn.length < INTEL_PT_INSN_BUF_SZ)
                memcpy(intel_pt_insn->buf, buf, insn.length);
@@ -183,12 +185,13 @@ const char *dump_insn(struct perf_insn *x, uint64_t ip 
__maybe_unused,
                      u8 *inbuf, int inlen, int *lenp)
 {
        struct insn insn;
-       int n, i;
+       int n, i, ret;
        int left;
 
-       insn_init(&insn, inbuf, inlen, x->is64bit);
-       insn_get_length(&insn);
-       if (!insn_complete(&insn) || insn.length > inlen)
+       ret = insn_decode(&insn, inbuf, inlen,
+                         x->is64bit ? INSN_MODE_64 : INSN_MODE_32);
+
+       if (ret < 0 || insn.length > inlen)
                return "<bad>";
        if (lenp)
                *lenp = insn.length;
-- 
2.29.2