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sim: fix out-of-bounds error in syscall_desc

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Brandon Potter 2017-02-17 12:01:50 -05:00
parent a854373d59
commit 96f8ff5702
1 changed files with 3 additions and 2 deletions
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5
src/sim/syscall_desc.cc
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@ -49,10 +49,11 @@ SyscallDesc::doSyscall(int callnum, LiveProcess *process, ThreadContext *tc)
/**
* Step through the first six parameters for the system call and
* retrieve their values. Note that index is incremented as a
* side-effect of the calling method.
* side-effect of the getSyscallArg method which is why the LHS
* needs the "-1".
*/
for (int index = 0; index < 6; )
arg[index] = process->getSyscallArg(tc, index);
arg[index - 1] = process->getSyscallArg(tc, index);
/**
* Linux supports up to six system call arguments through registers