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[Bug binutils/13965] New: for arm binary of ARM NEON, "objdump -d" produ
From: |
seanmaopub at gmail dot com |
Subject: |
[Bug binutils/13965] New: for arm binary of ARM NEON, "objdump -d" produces wrong use vshll instruction |
Date: |
Tue, 10 Apr 2012 09:07:40 +0000 |
http://sourceware.org/bugzilla/show_bug.cgi?id=13965
Bug #: 13965
Summary: for arm binary of ARM NEON, "objdump -d" produces
wrong use vshll instruction
Product: binutils
Version: 2.21
Status: NEW
Severity: critical
Priority: P2
Component: binutils
AssignedTo: address@hidden
ReportedBy: address@hidden
Classification: Unclassified
My platform is ubuntu 11.04 for ARM with binutils v2.21.0.20110327
$ objdump -d sobelI.o |grep vshl
b80: f3890a10 vshll.u8 d0, q0, #1
f3c: f3892a16 vshll.u8 d2, q3, #1
f44: f3892a16 vshll.u8 d2, q3, #1
However, the correct result should be as dumped by fromelf of ARM RVCT 4.0
>fromelf -c --text sobelI.o |find "VSHL"
0x00000b80: f3890a10 .... VSHLL.U8 q0,d0,#1
0x00000f3c: f3892a16 .*.. VSHLL.U8 q1,d6,#1
0x00000f44: f3892a16 .*.. VSHLL.U8 q1,d6,#1
I tried some other ARM toolchains, such newest version of CodeBench Lite
Edition, they all produced the wrong result as above.
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- [Bug binutils/13965] New: for arm binary of ARM NEON, "objdump -d" produces wrong use vshll instruction,
seanmaopub at gmail dot com <=