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http://reviews.gem5.org/r/3582/
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(Updated juil. 23, 2016, 1:15 après-midi)


Review request for Default.


Repository: gem5


Description (updated)
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syscall_emu: Corrected a bug on the syscall "read()".
Read() should not write anything when returning 0 (EOF).
This patch does not correct the same bug occuring for :

nbr_read=read(file, buf, nbytes) 

When nbr_read<nbytes, nbytes bytes are copied into the virtual
RAM instead of nbr_read. If buf is smaller than nbytes, a 
page fault occurs, even if buf is in fact bigger than nbr_read.


Diffs
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  src/sim/syscall_emul.cc cdb94f2332a6 

Diff: http://reviews.gem5.org/r/3582/diff/


Testing
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Works with CERE codelets (https://github.com/benchmark-subsetting/cere), 
correcting the issue when replacing dumps in memory.


Thanks,

Nicolas Derumigny

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