linux-kernel - [tip: x86/core] tools/objtool: Convert to insn

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Message-ID: <161582326501.398.15990602451576196663.tip-bot2@tip-bot2>
Date:   Mon, 15 Mar 2021 15:47:45 -0000
From:   "tip-bot2 for Borislav Petkov" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Borislav Petkov <bp@...e.de>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: x86/core] tools/objtool: Convert to insn_decode()

The following commit has been merged into the x86/core branch of tip:

Commit-ID:     c7e41b099be40112d53daccef8553e99e455e0d6
Gitweb:        https://git.kernel.org/tip/c7e41b099be40112d53daccef8553e99e455e0d6
Author:        Borislav Petkov <bp@...e.de>
AuthorDate:    Fri, 20 Nov 2020 17:37:06 +01:00
Committer:     Borislav Petkov <bp@...e.de>
CommitterDate: Mon, 15 Mar 2021 12:10:41 +01:00

tools/objtool: Convert to insn_decode()

Simplify code, no functional changes.

Signed-off-by: Borislav Petkov <bp@...e.de>
Link: https://lkml.kernel.org/r/20210304174237.31945-18-bp@alien8.de
---
 tools/objtool/arch/x86/decode.c |  9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/tools/objtool/arch/x86/decode.c b/tools/objtool/arch/x86/decode.c
index 549813c..8380d0b 100644
--- a/tools/objtool/arch/x86/decode.c
+++ b/tools/objtool/arch/x86/decode.c
@@ -90,7 +90,7 @@ int arch_decode_instruction(const struct elf *elf, const struct section *sec,
 			    struct list_head *ops_list)
 {
 	struct insn insn;
-	int x86_64, sign;
+	int x86_64, sign, ret;
 	unsigned char op1, op2, rex = 0, rex_b = 0, rex_r = 0, rex_w = 0,
 		      rex_x = 0, modrm = 0, modrm_mod = 0, modrm_rm = 0,
 		      modrm_reg = 0, sib = 0;
@@ -101,10 +101,9 @@ int arch_decode_instruction(const struct elf *elf, const struct section *sec,
 	if (x86_64 == -1)
 		return -1;
 
-	insn_init(&insn, sec->data->d_buf + offset, maxlen, x86_64);
-	insn_get_length(&insn);
-
-	if (!insn_complete(&insn)) {
+	ret = insn_decode(&insn, sec->data->d_buf + offset, maxlen,
+			  x86_64 ? INSN_MODE_64 : INSN_MODE_32);
+	if (ret < 0) {
 		WARN("can't decode instruction at %s:0x%lx", sec->name, offset);
 		return -1;
 	}