diff options
Diffstat (limited to 'src/runtime/internal/syscall/syscall_linux.go')
| -rw-r--r-- | src/runtime/internal/syscall/syscall_linux.go | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/src/runtime/internal/syscall/syscall_linux.go b/src/runtime/internal/syscall/syscall_linux.go deleted file mode 100644 index cb88659394..0000000000 --- a/src/runtime/internal/syscall/syscall_linux.go +++ /dev/null @@ -1,67 +0,0 @@ -// Copyright 2022 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 provides the syscall primitives required for the runtime. -package syscall - -import ( - "unsafe" -) - -// TODO(https://go.dev/issue/51087): This package is incomplete and currently -// only contains very minimal support for Linux. - -// Syscall6 calls system call number 'num' with arguments a1-6. -func Syscall6(num, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, errno uintptr) - -// syscall_RawSyscall6 is a push linkname to export Syscall6 as -// syscall.RawSyscall6. -// -// //go:uintptrkeepalive because the uintptr argument may be converted pointers -// that need to be kept alive in the caller (this is implied for Syscall6 since -// it has no body). -// -// //go:nosplit because stack copying does not account for uintptrkeepalive, so -// the stack must not grow. Stack copying cannot blindly assume that all -// uintptr arguments are pointers, because some values may look like pointers, -// but not really be pointers, and adjusting their value would break the call. -// -// This is a separate wrapper because we can't export one function as two -// names. The assembly implementations name themselves Syscall6 would not be -// affected by a linkname. -// -//go:uintptrkeepalive -//go:nosplit -//go:linkname syscall_RawSyscall6 syscall.RawSyscall6 -func syscall_RawSyscall6(num, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, errno uintptr) { - return Syscall6(num, a1, a2, a3, a4, a5, a6) -} - -func EpollCreate1(flags int32) (fd int32, errno uintptr) { - r1, _, e := Syscall6(SYS_EPOLL_CREATE1, uintptr(flags), 0, 0, 0, 0, 0) - return int32(r1), e -} - -var _zero uintptr - -func EpollWait(epfd int32, events []EpollEvent, maxev, waitms int32) (n int32, errno uintptr) { - var ev unsafe.Pointer - if len(events) > 0 { - ev = unsafe.Pointer(&events[0]) - } else { - ev = unsafe.Pointer(&_zero) - } - r1, _, e := Syscall6(SYS_EPOLL_PWAIT, uintptr(epfd), uintptr(ev), uintptr(maxev), uintptr(waitms), 0, 0) - return int32(r1), e -} - -func EpollCtl(epfd, op, fd int32, event *EpollEvent) (errno uintptr) { - _, _, e := Syscall6(SYS_EPOLL_CTL, uintptr(epfd), uintptr(op), uintptr(fd), uintptr(unsafe.Pointer(event)), 0, 0) - return e -} - -func Eventfd(initval, flags int32) (fd int32, errno uintptr) { - r1, _, e := Syscall6(SYS_EVENTFD2, uintptr(initval), uintptr(flags), 0, 0, 0, 0) - return int32(r1), e -} |
