I tried using fork() function in a program and I got errors. I ran on
SPARC_SE and X86_SE
Following are the results generated:
X86
[wiz...@dungeon m5]$ build/X86_SE/m5.debug configs/example/forkmm.py
...
**** REAL SIMULATION ****
info: Entering event queue @ 0. Starting simulation...
warn: instruction 'fnstcw_Mw' unimplemented
<<
For more information see: http://www.m5sim.org/warn/437d5238
warn: instruction 'fldcw_Mw' unimplemented
<<
For more information see: http://www.m5sim.org/warn/437d5238
warn: This sys_clone implementation assumes flags
CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD (0x10f00),
and may not work correctly with given flags 0x1200011
For more information see: http://www.m5sim.org/warn/8e4189bc
fatal: Called sys_clone, but no unallocated thread contexts found!
@ cycle 1579435500
[cloneFunc:build/X86_SE/sim/syscall_emul.cc, line 835]
Memory Usage: 732336 KBytes
For more information see: http://www.m5sim.org/fatal/d4b6f1ba
SPARC64
[wiz...@dungeon m5]$ build/SPARC_SE/m5.debug configs/example/forkmm.py
**** REAL SIMULATION ****
info: Entering event queue @ 0. Starting simulation...
fatal: syscall fork (#2) unimplemented.
<<
@ cycle 913047500
[unimplementedFunc:build/SPARC_SE/sim/syscall_emul.cc, line 82]
Memory Usage: 733416 KBytes
For more information see: http://www.m5sim.org/fatal/be2b42f
Correct me if I am wrong to say it is because fork implementation is
missing in sparc and some problem with its implementation in x86. Now
I wanted to test for multiple processes in multiprocessor environment
but if I can't fork then how can i engage all the processors. Can
pthread be used in SE mode??
--
Sudhanshu([email protected], [email protected] &
[email protected])
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