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[Qemu-devel] [Bug 1725267] Re: armeb regression since qemu version 2.8
From: |
Thomas Huth |
Subject: |
[Qemu-devel] [Bug 1725267] Re: armeb regression since qemu version 2.8 |
Date: |
Fri, 15 Dec 2017 15:47:56 -0000 |
https://git.qemu.org/?p=qemu.git;a=commitdiff;h=3448d47b3172015006b7
** Changed in: qemu
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1725267
Title:
armeb regression since qemu version 2.8
Status in QEMU:
Fix Released
Bug description:
Hi,
I have noticed a regression when I upgraded from qemu-armeb 2.7 to
2.8, and the problem is still present with version 2.10.1.
I am using qemu for GCC validation, noticed problems with testcases
involving atomics, I'm attaching here atomic-exchange-4.exe.
# with 2.7:
$ qemu-armeb -cpu any -R 0 -L $PWD -E LD_LIBRARY_PATH=$PWD/lib
$PWD/atomic-exchange-4.exe
$ echo $?
0
# with 2.8, 2.10.1:
$ qemu-armeb -cpu any -R 0 -L $PWD -E LD_LIBRARY_PATH=$PWD/lib
$PWD/atomic-exchange-4.exe
qemu: uncaught target signal 6 (Aborted) - core dumped
Aborted (core dumped)
$ echo $?
134
The source code is gcc/testsuite/gcc.dg/atomic-exchange-4.c
Running with -d in_asm shows a difference early in the startup code:
IN: _dl_sysdep_start
[...]
0x40a17790: 908ff103 addls pc, pc, r3, lsl #2
and then the next address is not the same with qemu 2.7 and 2.10.1
I hope you have enough data/information to reproduce and confirm/fix
the problem.
Thanks
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