linux-kernel - [PATCH v2 2/2] arch/x86/tools/objdump

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Message-Id: <20220304031611.5763-3-samuelzeter@gmail.com>
Date:   Fri,  4 Mar 2022 14:16:11 +1100
From:   Sam Zeter <samuelzeter@...il.com>
To:     mhiramat@...nel.org, Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Samuel Zeter <samuelzeter@...il.com>,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: [PATCH v2 2/2] arch/x86/tools/objdump_reformat.awk: Allow for spaces

From: Samuel Zeter <samuelzeter@...il.com>

objdump and llvm-objdump have differing output formats. Specifically,
objump will format its output as: address:<tab>hex, whereas
llvm-objdump displays its output as address:<space>hex.

objdump_reformat.awk incorrectly handles this discrepancy due to
the unexpected space and as a result insn_decoder_test fails, as
its input is garbled.

The instruction line being tokenized now handles a space and colon,
or tab delimiter.

Signed-off-by: Samuel Zeter <samuelzeter@...il.com>
---
 arch/x86/tools/objdump_reformat.awk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/tools/objdump_reformat.awk b/arch/x86/tools/objdump_reformat.awk
index 276e572a6..a4120d907 100644
--- a/arch/x86/tools/objdump_reformat.awk
+++ b/arch/x86/tools/objdump_reformat.awk
@@ -22,7 +22,7 @@ BEGIN {
 }
 
 /^ *[0-9a-f]+:/ {
-	if (split($0, field, "\t") < 3) {
+	if (split($0, field, /: |\t/) < 3) {
 		# This is a continuation of the same insn.
 		prev_hex = prev_hex field[2]
 	} else {
-- 
2.35.1