diff options
author | Rob Pike <r@golang.org> | 2009-06-09 09:53:44 -0700 |
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committer | Rob Pike <r@golang.org> | 2009-06-09 09:53:44 -0700 |
commit | 7249ea4df2b4f12a4e7ed446f270cea87e4ffd34 (patch) | |
tree | 7032a11d0cac2ae4d3e90f7a189b575b5a50f848 /src/pkg/syscall/syscall_linux_386.go | |
parent | acf6ef7a82b3fe61516a1bac4563706552bdf078 (diff) | |
download | golang-7249ea4df2b4f12a4e7ed446f270cea87e4ffd34.tar.gz |
mv src/lib to src/pkg
tests: all.bash passes, gobuild still works, godoc still works.
R=rsc
OCL=30096
CL=30102
Diffstat (limited to 'src/pkg/syscall/syscall_linux_386.go')
-rw-r--r-- | src/pkg/syscall/syscall_linux_386.go | 100 |
1 files changed, 100 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..9bf3f9cf0 --- /dev/null +++ b/src/pkg/syscall/syscall_linux_386.go @@ -0,0 +1,100 @@ +// 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 ( + "syscall"; + "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; +} + +// 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 accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, errno int) { + fd, errno = socketcall(_SOCKET, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0); + return; +} + +func bind(s int, addr uintptr, addrlen _Socklen) (errno int) { + var _ int; + _, errno = socketcall(_BIND, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0); + return; +} + +func connect(s int, addr uintptr, addrlen _Socklen) (errno int) { + var _ 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 = socketcall(_SOCKET, uintptr(domain), uintptr(typ), uintptr(proto), 0, 0, 0); + return; +} + +func setsockopt(s int, level int, name int, val uintptr, vallen int) (errno int) { + var _ int; + _, errno = socketcall(_SETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(vallen), 0); + return; +} + +func Listen(s int, n int) (errno int) { + var _ int; + _, errno = socketcall(_LISTEN, uintptr(s), uintptr(n), 0, 0, 0, 0); + return; +} + |