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x86, sim: add some syscalls to X86

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this patch adds an implementation for the pwrite64 syscall and
enables it for x86_64, and enables fstatfs for x86_64.
This commit is contained in:
Tony Gutierrez 2016-08-04 12:32:21 -04:00
parent 8eb9cf8e94
commit 0b68475b10
2 changed files with 24 additions and 2 deletions
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4
src/arch/x86/linux/process.cc
View file

@ -236,7 +236,7 @@ static SyscallDesc syscallDescs64[] = {
/* 15 */ SyscallDesc("rt_sigreturn", unimplementedFunc),
/* 16 */ SyscallDesc("ioctl", ioctlFunc<X86Linux64>),
/* 17 */ SyscallDesc("pread64", unimplementedFunc),
/* 18 */ SyscallDesc("pwrite64", unimplementedFunc),
/* 18 */ SyscallDesc("pwrite64", pwrite64Func<X86Linux64>),
/* 19 */ SyscallDesc("readv", unimplementedFunc),
/* 20 */ SyscallDesc("writev", writevFunc<X86Linux64>),
/* 21 */ SyscallDesc("access", ignoreFunc),
@ -356,7 +356,7 @@ static SyscallDesc syscallDescs64[] = {
/* 135 */ SyscallDesc("personality", unimplementedFunc),
/* 136 */ SyscallDesc("ustat", unimplementedFunc),
/* 137 */ SyscallDesc("statfs", unimplementedFunc),
/* 138 */ SyscallDesc("fstatfs", unimplementedFunc),
/* 138 */ SyscallDesc("fstatfs", fstatfsFunc<X86Linux64>),
/* 139 */ SyscallDesc("sysfs", unimplementedFunc),
/* 140 */ SyscallDesc("getpriority", unimplementedFunc),
/* 141 */ SyscallDesc("setpriority", unimplementedFunc),

22
src/sim/syscall_emul.hh
View file

@ -1389,6 +1389,28 @@ mmapImpl(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc,
return start;
}
template <class OS>
SyscallReturn
pwrite64Func(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
int index = 0;
int tgt_fd = p->getSyscallArg(tc, index);
Addr bufPtr = p->getSyscallArg(tc, index);
int nbytes = p->getSyscallArg(tc, index);
int offset = p->getSyscallArg(tc, index);
int sim_fd = p->getSimFD(tgt_fd);
if (sim_fd < 0)
return -EBADF;
BufferArg bufArg(bufPtr, nbytes);
bufArg.copyIn(tc->getMemProxy());
int bytes_written = pwrite64(sim_fd, bufArg.bufferPtr(), nbytes, offset);
return (bytes_written == -1) ? -errno : bytes_written;
}
/// Target mmap() handler.
template <class OS>
SyscallReturn