Looking at these files will get you started:
http://repo.m5sim.org/gem5/file/82ff928182c5/src/arch/mips/linux/process.cc
http://repo.m5sim.org/gem5/file/82ff928182c5/src/sim/syscall_emul.cc
This file has an example of that system call hooked up:
http://repo.m5sim.org/gem5/file/82ff928182c5/src/arch/arm/linux/process.cc
Gabe
Quoting xxx <[email protected]>:
Hi,
I try to use run openJPEG binary code on gems/MIPS_SE.
There is a fatal error that syscall llseek (#4140) unimplemented as the
following.
I am not sure the input format is not correct or the simulator doesn't
support openJPEG.
-----------------------------------------------------------------------------------------------------
Nilay [email protected] to gem5
show details 10:33 AM (3 hours ago)
- Show quoted text -
On Tue, July 12, 2011 8:52 am, xxx wrote:
Hi,
I try to use run openJPEG binary code on gems/MIPS_SE.
There is a fatal error that syscall llseek (#4140) unimplemented as the
following.
I am not sure the input format is not correct or the simulator doesn't
support openJPEG.
-----------------------------------------------------------------------------------------------------
[linjiah@localhost gem5]$ ./build/MIPS_SE/gem5.opt configs/example/se.py
--cmd ./benchmark/image_to_j2k --options="-i ./benchmark/Bretagne1.bmp
-o
./benchmark/Bretagne1.j2k"
gem5 Simulator System. http://gem5.org
gem5 is copyrighted software; use the --copyright option for details.
gem5 compiled Jul 10 2011 22:59:59
gem5 started Jul 11 2011 23:07:37
gem5 executing on localhost.localdomain
command line: ./build/MIPS_SE/gem5.opt configs/example/se.py --cmd
./benchmark/image_to_j2k --options=-i ./benchmark/Bretagne1.bmp -o
./benchmark/Bretagne1.j2k
Global frequency set at 1000000000000 ticks per second
0: system.remote_gdb.listener: listening for remote gdb #0 on port 7000
**** REAL SIMULATION ****
info: Entering event queue @ 0. Starting simulation...
info: Increasing stack size by one page.
info: Increasing stack size by one page.
info: Increasing stack size by one page.
info: Increasing stack size by one page.
info: Increasing stack size by one page.
warn: Syscall: open: cannot decode flags 0x2000
fatal: syscall llseek (#4140) unimplemented.
@ cycle 29788500
[unimplementedFunc:build/MIPS_SE/sim/syscall_emul.cc, line 83]
Memory Usage: 696248 KBytes
[linjiah@localhost gem5]$
The simulator does not support the system call llseek. The message at the
end is clear enough.
---------------------------------------------------------------------------------
How can I implement such a system call in gem5?
Can you give me some suggestion?
Thanks.
L.J
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