From: Ahmed Karaman <1881450@bugs.launchpad.net>
To: qemu-devel@nongnu.org
Subject: [Bug 1881450] [NEW] Emulation of a math function fails for m68k Linux user mode
Date: Sun, 31 May 2020 01:02:33 -0000 [thread overview]
Message-ID: <159088695339.29529.1797786788240960646.malonedeb@chaenomeles.canonical.com> (raw)
Public bug reported:
Please check the attached math-example.c file.
When running the m68k executable under QEMU, it results in an
"Illegal instruction" error.
Other targets don't produce this error.
Steps to reproduce the bug:
1. Download the math-example.c attached file.
2. Compile it by running:
m68k-linux-gnu-gcc -O2 -static math-example.c -o math-example-m68k -lm
3. Run the executable with QEMU:
/build/qemu-5.0.0/build-gcc/m68k-linux-user/qemu-m68k math-example-m68k
The output of execution is:
Profiling function expm1f():
qemu: uncaught target signal 4 (Illegal instruction) - core dumped
Illegal instruction (core dumped)
Output when running on other targets:
Profiling function expm1f():
Elapsed time: 47 ms
Control result: 71804.953125
** Affects: qemu
Importance: Undecided
Status: New
** Tags: m68k
** Attachment added: "Emulating the expm1f() function."
https://bugs.launchpad.net/bugs/1881450/+attachment/5378913/+files/math-example.c
** Description changed:
Please check the attached math-example.c file.
- When running the m68k executable under QEMU, it results in an "Illegal instruction" error.
+ When running the m68k executable under QEMU, it results in an
+ "Illegal instruction" error.
Other targets don't produce this error.
Steps to reproduce the bug:
1. Download the math-example.c attached file.
2. Compile it by running:
- m68k-linux-gnu-gcc -O2 -static math-example.c -o math-example-m68k -lm
+ m68k-linux-gnu-gcc -O2 -static math-example.c -o math-example-m68k -lm
3. Run the executable with QEMU:
- /build/qemu-5.0.0/build-gcc/m68k-linux-user/qemu-m68k math-example-m68k
+ /build/qemu-5.0.0/build-gcc/m68k-linux-user/qemu-m68k math-example-m68k
The output of execution is:
- Profiling function expm1f():
- qemu: uncaught target signal 4 (Illegal instruction) - core dumped
- Illegal instruction (core dumped)
+ Profiling function expm1f():
+ qemu: uncaught target signal 4 (Illegal instruction) - core dumped
+ Illegal instruction (core dumped)
- Expected output:
- Profiling function expm1f():
- Elapsed time: 47 ms
- Control result: 71804.953125
+ Output when running on other targets:
+ Profiling function expm1f():
+ Elapsed time: 47 ms
+ Control result: 71804.953125
** Attachment removed: "math-example.c"
https://bugs.launchpad.net/qemu/+bug/1881450/+attachment/5378913/+files/math-example.c
--
You received this bug notification because you are a member of qemu-
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https://bugs.launchpad.net/bugs/1881450
Title:
Emulation of a math function fails for m68k Linux user mode
Status in QEMU:
New
Bug description:
Please check the attached math-example.c file.
When running the m68k executable under QEMU, it results in an
"Illegal instruction" error.
Other targets don't produce this error.
Steps to reproduce the bug:
1. Download the math-example.c attached file.
2. Compile it by running:
m68k-linux-gnu-gcc -O2 -static math-example.c -o math-example-m68k -lm
3. Run the executable with QEMU:
/build/qemu-5.0.0/build-gcc/m68k-linux-user/qemu-m68k math-example-m68k
The output of execution is:
Profiling function expm1f():
qemu: uncaught target signal 4 (Illegal instruction) - core dumped
Illegal instruction (core dumped)
Output when running on other targets:
Profiling function expm1f():
Elapsed time: 47 ms
Control result: 71804.953125
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1881450/+subscriptions
next reply other threads:[~2020-05-31 1:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-31 1:02 Ahmed Karaman [this message]
2020-05-31 1:09 ` [Bug 1881450] Re: Emulation of a math function fails for m68k Linux user mode Ahmed Karaman
2020-05-31 6:49 ` Laurent Vivier
2020-05-31 12:37 ` Laurent Vivier
2020-05-31 13:11 ` Laurent Vivier
2020-05-31 13:13 ` Laurent Vivier
2020-06-02 18:27 ` Laurent Vivier
2020-08-20 14:58 ` Thomas Huth
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