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[Qemu-devel] [Bug 1590336] [NEW] qemu-arm does not reject vrintz on non-
From: |
Christophe Lyon |
Subject: |
[Qemu-devel] [Bug 1590336] [NEW] qemu-arm does not reject vrintz on non-v8 cpu |
Date: |
Wed, 08 Jun 2016 09:12:17 -0000 |
Public bug reported:
Hello,
It seems that qemu-arm does not reject some v8-only instructions as it
should, but executes them "correctly".
For instance, while compiling/running some of the GCC ARM instrinsics tests, we
noticed that
vrintz should be rejected on cortex-a9 for instance, while it is executed as if
the instruction was supported.
objdump says:
1074c: f3fa05a0 vrintz.f32 d16, d16
and qemu -d in_asm says:
0x0001074c: f3fa05a0 vabal.u<illegal width 64> q8, d26, d16
The problem is still present in qemu-2.6.0
** Affects: qemu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1590336
Title:
qemu-arm does not reject vrintz on non-v8 cpu
Status in QEMU:
New
Bug description:
Hello,
It seems that qemu-arm does not reject some v8-only instructions as it
should, but executes them "correctly".
For instance, while compiling/running some of the GCC ARM instrinsics tests,
we noticed that
vrintz should be rejected on cortex-a9 for instance, while it is executed as
if the instruction was supported.
objdump says:
1074c: f3fa05a0 vrintz.f32 d16, d16
and qemu -d in_asm says:
0x0001074c: f3fa05a0 vabal.u<illegal width 64> q8, d26, d16
The problem is still present in qemu-2.6.0
To manage notifications about this bug go to:
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- [Qemu-devel] [Bug 1590336] [NEW] qemu-arm does not reject vrintz on non-v8 cpu,
Christophe Lyon <=