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arm: add access syscall for ARM SE mode

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This patch adds the "access" syscall for ARM SE as required by some spec2006
benchmarks.
This commit is contained in:
Mitch Hayenga 2013-01-08 08:54:07 -05:00
parent c7dbd5e768
commit 4a752b1655
3 changed files with 22 additions and 1 deletions
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2
src/arch/arm/linux/process.cc
View file

@ -108,7 +108,7 @@ SyscallDesc ArmLinuxProcess::syscallDescs[] = {
/* 30 */ SyscallDesc("utime", unimplementedFunc),
/* 31 */ SyscallDesc("unused#31", unimplementedFunc),
/* 32 */ SyscallDesc("unused#32", unimplementedFunc),
/* 33 */ SyscallDesc("access", unimplementedFunc),
/* 33 */ SyscallDesc("access", accessFunc),
/* 34 */ SyscallDesc("nice", unimplementedFunc),
/* 35 */ SyscallDesc("unused#35", unimplementedFunc),
/* 36 */ SyscallDesc("sync", unimplementedFunc),

17
src/sim/syscall_emul.cc
View file

@ -851,3 +851,20 @@ cloneFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
}
}
SyscallReturn
accessFunc(SyscallDesc *desc, int callnum, LiveProcess *p, ThreadContext *tc)
{
int index = 0;
string path;
if (!tc->getMemProxy().tryReadString(path, p->getSyscallArg(tc, index)))
return (TheISA::IntReg)-EFAULT;
// Adjust path for current working directory
path = p->fullPath(path);
mode_t mode = p->getSyscallArg(tc, index);
int result = access(path.c_str(), mode);
return (result == -1) ? -errno : result;
}

4
src/sim/syscall_emul.hh
View file

@ -335,6 +335,10 @@ SyscallReturn getegidFunc(SyscallDesc *desc, int num,
SyscallReturn cloneFunc(SyscallDesc *desc, int num,
LiveProcess *p, ThreadContext *tc);
/// Target access() handler
SyscallReturn accessFunc(SyscallDesc *desc, int num,
LiveProcess *p, ThreadContext *tc);
/// Futex system call
/// Implemented by Daniel Sanchez
/// Used by printf's in multi-threaded apps