* [Bug 1881450] [NEW] Emulation of a math function fails for m68k Linux user mode
@ 2020-05-31 1:02 Ahmed Karaman
2020-05-31 1:09 ` [Bug 1881450] " Ahmed Karaman
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: Ahmed Karaman @ 2020-05-31 1:02 UTC (permalink / raw)
To: qemu-devel
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
--
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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
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug 1881450] Re: Emulation of a math function fails for m68k Linux user mode
2020-05-31 1:02 [Bug 1881450] [NEW] Emulation of a math function fails for m68k Linux user mode Ahmed Karaman
@ 2020-05-31 1:09 ` Ahmed Karaman
2020-05-31 6:49 ` Laurent Vivier
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Ahmed Karaman @ 2020-05-31 1:09 UTC (permalink / raw)
To: qemu-devel
** Attachment added: "math-example.c"
https://bugs.launchpad.net/qemu/+bug/1881450/+attachment/5378914/+files/math-example.c
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
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
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug 1881450] Re: Emulation of a math function fails for m68k Linux user mode
2020-05-31 1:02 [Bug 1881450] [NEW] Emulation of a math function fails for m68k Linux user mode Ahmed Karaman
2020-05-31 1:09 ` [Bug 1881450] " Ahmed Karaman
@ 2020-05-31 6:49 ` Laurent Vivier
2020-05-31 12:37 ` Laurent Vivier
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Laurent Vivier @ 2020-05-31 6:49 UTC (permalink / raw)
To: qemu-devel
** Changed in: qemu
Assignee: (unassigned) => Laurent Vivier (laurent-vivier)
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
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
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug 1881450] Re: Emulation of a math function fails for m68k Linux user mode
2020-05-31 1:02 [Bug 1881450] [NEW] Emulation of a math function fails for m68k Linux user mode Ahmed Karaman
2020-05-31 1:09 ` [Bug 1881450] " Ahmed Karaman
2020-05-31 6:49 ` Laurent Vivier
@ 2020-05-31 12:37 ` Laurent Vivier
2020-05-31 13:11 ` Laurent Vivier
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Laurent Vivier @ 2020-05-31 12:37 UTC (permalink / raw)
To: qemu-devel
Tracing gives me:
IN: expm1f
0x800005cc: fetoxm1x %fp2,%fp0
Disassembler disagrees with translator over instruction decoding
Please report this to qemu-devel@nongnu.org
(gdb) x/2hx 0x800005cc
0x800005cc: 0xf200 0x0808
The instruction is not implemented in qemu. I fix that.
--
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
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug 1881450] Re: Emulation of a math function fails for m68k Linux user mode
2020-05-31 1:02 [Bug 1881450] [NEW] Emulation of a math function fails for m68k Linux user mode Ahmed Karaman
` (2 preceding siblings ...)
2020-05-31 12:37 ` Laurent Vivier
@ 2020-05-31 13:11 ` Laurent Vivier
2020-05-31 13:13 ` Laurent Vivier
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Laurent Vivier @ 2020-05-31 13:11 UTC (permalink / raw)
To: qemu-devel
** Patch added: "0001-target-m68k-implement-opcode-fetoxm1x.patch"
https://bugs.launchpad.net/qemu/+bug/1881450/+attachment/5379012/+files/0001-target-m68k-implement-opcode-fetoxm1x.patch
--
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:
In Progress
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
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug 1881450] Re: Emulation of a math function fails for m68k Linux user mode
2020-05-31 1:02 [Bug 1881450] [NEW] Emulation of a math function fails for m68k Linux user mode Ahmed Karaman
` (3 preceding siblings ...)
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
6 siblings, 0 replies; 8+ messages in thread
From: Laurent Vivier @ 2020-05-31 13:13 UTC (permalink / raw)
To: qemu-devel
Fix available.
Execution doesn't fail anymore:
Profiling function expm1f():
Elapsed time: 41 ms
Control result: 71805.108342
Control result matches real hardware one:
Profiling function expm1f():
Elapsed time: 2152 ms
Control result: 71805.108342
** Changed in: qemu
Status: New => In Progress
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1881450
Title:
Emulation of a math function fails for m68k Linux user mode
Status in QEMU:
In Progress
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
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug 1881450] Re: Emulation of a math function fails for m68k Linux user mode
2020-05-31 1:02 [Bug 1881450] [NEW] Emulation of a math function fails for m68k Linux user mode Ahmed Karaman
` (4 preceding siblings ...)
2020-05-31 13:13 ` Laurent Vivier
@ 2020-06-02 18:27 ` Laurent Vivier
2020-08-20 14:58 ` Thomas Huth
6 siblings, 0 replies; 8+ messages in thread
From: Laurent Vivier @ 2020-06-02 18:27 UTC (permalink / raw)
To: qemu-devel
** Changed in: qemu
Status: In Progress => Fix Committed
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1881450
Title:
Emulation of a math function fails for m68k Linux user mode
Status in QEMU:
Fix Committed
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
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug 1881450] Re: Emulation of a math function fails for m68k Linux user mode
2020-05-31 1:02 [Bug 1881450] [NEW] Emulation of a math function fails for m68k Linux user mode Ahmed Karaman
` (5 preceding siblings ...)
2020-06-02 18:27 ` Laurent Vivier
@ 2020-08-20 14:58 ` Thomas Huth
6 siblings, 0 replies; 8+ messages in thread
From: Thomas Huth @ 2020-08-20 14:58 UTC (permalink / raw)
To: qemu-devel
Fixed here:
https://git.qemu.org/?p=qemu.git;a=commitdiff;h=250b1da35d579f423
** Changed in: qemu
Status: Fix Committed => Fix Released
--
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devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1881450
Title:
Emulation of a math function fails for m68k Linux user mode
Status in QEMU:
Fix Released
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
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2020-08-20 15:23 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-05-31 1:02 [Bug 1881450] [NEW] Emulation of a math function fails for m68k Linux user mode Ahmed Karaman
2020-05-31 1:09 ` [Bug 1881450] " 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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