1 files changed, 218 insertions, 0 deletions
diff --git a/src/pkg/syscall/syscall_linux_386.go b/src/pkg/syscall/syscall_linux_386.go
new file mode 100644
index 000000000..44891de87
--- /dev/null
+++ b/src/pkg/syscall/syscall_linux_386.go
@@ -0,0 +1,218 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package syscall
+
+import "unsafe"
+
+func Getpagesize() int { return 4096 }
+
+func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) }
+
+func NsecToTimespec(nsec int64) (ts Timespec) {
+	ts.Sec = int32(nsec / 1e9)
+	ts.Nsec = int32(nsec % 1e9)
+	return
+}
+
+func TimevalToNsec(tv Timeval) int64 { return int64(tv.Sec)*1e9 + int64(tv.Usec)*1e3 }
+
+func NsecToTimeval(nsec int64) (tv Timeval) {
+	nsec += 999 // round up to microsecond
+	tv.Sec = int32(nsec / 1e9)
+	tv.Usec = int32(nsec % 1e9 / 1e3)
+	return
+}
+
+// 64-bit file system and 32-bit uid calls
+// (386 default is 32-bit file system and 16-bit uid).
+//sys	Chown(path string, uid int, gid int) (errno int) = SYS_CHOWN32
+//sys	Fchown(fd int, uid int, gid int) (errno int) = SYS_FCHOWN32
+//sys	Fstat(fd int, stat *Stat_t) (errno int) = SYS_FSTAT64
+//sys	Ftruncate(fd int, length int64) (errno int) = SYS_FTRUNCATE64
+//sysnb	Getegid() (egid int) = SYS_GETEGID32
+//sysnb	Geteuid() (euid int) = SYS_GETEUID32
+//sysnb	Getgid() (gid int) = SYS_GETGID32
+//sysnb	Getuid() (uid int) = SYS_GETUID32
+//sys	Ioperm(from int, num int, on int) (errno int)
+//sys	Iopl(level int) (errno int)
+//sys	Lchown(path string, uid int, gid int) (errno int) = SYS_LCHOWN32
+//sys	Lstat(path string, stat *Stat_t) (errno int) = SYS_LSTAT64
+//sys	Pread(fd int, p []byte, offset int64) (n int, errno int) = SYS_PREAD64
+//sys	Pwrite(fd int, p []byte, offset int64) (n int, errno int) = SYS_PWRITE64
+//sys	Sendfile(outfd int, infd int, offset *int64, count int) (written int, errno int) = SYS_SENDFILE64
+//sys	Setfsgid(gid int) (errno int) = SYS_SETFSGID32
+//sys	Setfsuid(uid int) (errno int) = SYS_SETFSUID32
+//sysnb	Setgid(gid int) (errno int) = SYS_SETGID32
+//sysnb	Setregid(rgid int, egid int) (errno int) = SYS_SETREGID32
+//sysnb	Setresgid(rgid int, egid int, sgid int) (errno int) = SYS_SETRESGID32
+//sysnb	Setresuid(ruid int, euid int, suid int) (errno int) = SYS_SETRESUID32
+//sysnb	Setreuid(ruid int, euid int) (errno int) = SYS_SETREUID32
+//sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, errno int)
+//sys	Stat(path string, stat *Stat_t) (errno int) = SYS_STAT64
+//sys	SyncFileRange(fd int, off int64, n int64, flags int) (errno int)
+//sys	Truncate(path string, length int64) (errno int) = SYS_TRUNCATE64
+//sysnb	getgroups(n int, list *_Gid_t) (nn int, errno int) = SYS_GETGROUPS32
+//sysnb	setgroups(n int, list *_Gid_t) (errno int) = SYS_SETGROUPS32
+//sys	Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, errno int) = SYS__NEWSELECT
+
+//sys	mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, errno int)
+
+func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, errno int) {
+	page := uintptr(offset / 4096)
+	if offset != int64(page)*4096 {
+		return 0, EINVAL
+	}
+	return mmap2(addr, length, prot, flags, fd, page)
+}
+
+// Underlying system call writes to newoffset via pointer.
+// Implemented in assembly to avoid allocation.
+func Seek(fd int, offset int64, whence int) (newoffset int64, errno int)
+
+// Vsyscalls on amd64.
+//sysnb	Gettimeofday(tv *Timeval) (errno int)
+//sysnb	Time(t *Time_t) (tt Time_t, errno int)
+
+// On x86 Linux, all the socket calls go through an extra indirection,
+// I think because the 5-register system call interface can't handle
+// the 6-argument calls like sendto and recvfrom.  Instead the
+// arguments to the underlying system call are the number below
+// and a pointer to an array of uintptr.  We hide the pointer in the
+// socketcall assembly to avoid allocation on every system call.
+
+const (
+	// see linux/net.h
+	_SOCKET      = 1
+	_BIND        = 2
+	_CONNECT     = 3
+	_LISTEN      = 4
+	_ACCEPT      = 5
+	_GETSOCKNAME = 6
+	_GETPEERNAME = 7
+	_SOCKETPAIR  = 8
+	_SEND        = 9
+	_RECV        = 10
+	_SENDTO      = 11
+	_RECVFROM    = 12
+	_SHUTDOWN    = 13
+	_SETSOCKOPT  = 14
+	_GETSOCKOPT  = 15
+	_SENDMSG     = 16
+	_RECVMSG     = 17
+)
+
+func socketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (n int, errno int)
+func rawsocketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (n int, errno int)
+
+func accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, errno int) {
+	fd, errno = socketcall(_ACCEPT, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0)
+	return
+}
+
+func getsockname(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (errno int) {
+	_, errno = rawsocketcall(_GETSOCKNAME, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0)
+	return
+}
+
+func getpeername(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (errno int) {
+	_, errno = rawsocketcall(_GETPEERNAME, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0)
+	return
+}
+
+func socketpair(domain int, typ int, flags int, fd *[2]int) (errno int) {
+	_, errno = rawsocketcall(_SOCKETPAIR, uintptr(domain), uintptr(typ), uintptr(flags), uintptr(unsafe.Pointer(fd)), 0, 0)
+	return
+}
+
+func bind(s int, addr uintptr, addrlen _Socklen) (errno int) {
+	_, errno = socketcall(_BIND, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0)
+	return
+}
+
+func connect(s int, addr uintptr, addrlen _Socklen) (errno int) {
+	_, errno = socketcall(_CONNECT, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0)
+	return
+}
+
+func socket(domain int, typ int, proto int) (fd int, errno int) {
+	fd, errno = rawsocketcall(_SOCKET, uintptr(domain), uintptr(typ), uintptr(proto), 0, 0, 0)
+	return
+}
+
+func getsockopt(s int, level int, name int, val uintptr, vallen *_Socklen) (errno int) {
+	_, errno = socketcall(_GETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen)), 0)
+	return
+}
+
+func setsockopt(s int, level int, name int, val uintptr, vallen uintptr) (errno int) {
+	_, errno = socketcall(_SETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), val, vallen, 0)
+	return
+}
+
+func recvfrom(s int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, errno int) {
+	var base uintptr
+	if len(p) > 0 {
+		base = uintptr(unsafe.Pointer(&p[0]))
+	}
+	n, errno = socketcall(_RECVFROM, uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(unsafe.Pointer(from)), uintptr(unsafe.Pointer(fromlen)))
+	return
+}
+
+func sendto(s int, p []byte, flags int, to uintptr, addrlen _Socklen) (errno int) {
+	var base uintptr
+	if len(p) > 0 {
+		base = uintptr(unsafe.Pointer(&p[0]))
+	}
+	_, errno = socketcall(_SENDTO, uintptr(s), base, uintptr(len(p)), uintptr(flags), to, uintptr(addrlen))
+	return
+}
+
+func recvmsg(s int, msg *Msghdr, flags int) (n int, errno int) {
+	n, errno = socketcall(_RECVMSG, uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags), 0, 0, 0)
+	return
+}
+
+func sendmsg(s int, msg *Msghdr, flags int) (errno int) {
+	_, errno = socketcall(_SENDMSG, uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags), 0, 0, 0)
+	return
+}
+
+func Listen(s int, n int) (errno int) {
+	_, errno = socketcall(_LISTEN, uintptr(s), uintptr(n), 0, 0, 0, 0)
+	return
+}
+
+func Shutdown(s, how int) (errno int) {
+	_, errno = socketcall(_SHUTDOWN, uintptr(s), uintptr(how), 0, 0, 0, 0)
+	return
+}
+
+func Fstatfs(fd int, buf *Statfs_t) (errno int) {
+	_, _, e1 := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
+	errno = int(e1)
+	return
+}
+
+func Statfs(path string, buf *Statfs_t) (errno int) {
+	_, _, e1 := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(StringBytePtr(path))), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
+	errno = int(e1)
+	return
+}
+
+func (r *PtraceRegs) PC() uint64 { return uint64(uint32(r.Eip)) }
+
+func (r *PtraceRegs) SetPC(pc uint64) { r.Eip = int32(pc) }
+
+func (iov *Iovec) SetLen(length int) {
+	iov.Len = uint32(length)
+}
+
+func (msghdr *Msghdr) SetControllen(length int) {
+	msghdr.Controllen = uint32(length)
+}
+
+func (cmsg *Cmsghdr) SetLen(length int) {
+	cmsg.Len = uint32(length)
+}