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[Qemu-devel] [Bug 547227] Re: qemu-system-m68k does not accept "notw %d"
From: |
Natalia Portillo |
Subject: |
[Qemu-devel] [Bug 547227] Re: qemu-system-m68k does not accept "notw %d" instruction |
Date: |
Wed, 02 Jun 2010 13:09:40 -0000 |
As of QEMU 0.12.3, it only emulates ColdFire processors.
Coldfire no longer implement notw, only notl instruction, so this
behaviour is expected.
** Changed in: qemu
Status: New => Invalid
--
qemu-system-m68k does not accept "notw %d" instruction
https://bugs.launchpad.net/bugs/547227
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Status in QEMU: Invalid
Bug description:
The notw and notb instructions does not work with latest version of
qemu-system-m68k. I've tried both 0.12.3 and the latest git version compiled
about an hour ago, both running on Arch Linux. The executable fails with the
following output:
> qemu-system-m68k -nographic -M an5206 -kernel test.elf
qemu: fatal: Illegal instruction: 4640 @ 00000006
D0 = 00000000 A0 = 00000000 F0 = 0000000000000000 ( 0)
D1 = 00000000 A1 = 00000000 F1 = 0000000000000000 ( 0)
D2 = 00000000 A2 = 00000000 F2 = 0000000000000000 ( 0)
D3 = 00000000 A3 = 00000000 F3 = 0000000000000000 ( 0)
D4 = 00000000 A4 = 00000000 F4 = 0000000000000000 ( 0)
D5 = 00000000 A5 = 00000000 F5 = 0000000000000000 ( 0)
D6 = 00000000 A6 = 00000000 F6 = 0000000000000000 ( 0)
D7 = 00000000 A7 = 00000000 F7 = 0000000000000000 ( 0)
PC = 00000000 SR = 2700 ----- FPRESULT = 0
zsh: abort qemu-system-m68k -nographic -M an5206 -kernel test.elf
I've attached the test.elf file, which produces the bug. It contains the
following:
> m68k-elf-objdump -m 68000 -D test.elf
test.elf: file format elf32-m68k
Disassembly of section .text:
00000000 <start>:
0: 4e71 nop
2: 4e71 nop
4: 4e71 nop
6: 4640 notw %d0
00000008 <loop>:
8: 6000 fffe braw 8 <loop>
It works when removing the not instruction. There might be other non-working
instructions, I've only tested a few.
Hope you'll get the bug fixed. Thanks.
- [Qemu-devel] [Bug 547227] Re: qemu-system-m68k does not accept "notw %d" instruction,
Natalia Portillo <=