1// Copyright 2011 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5package runtime
6
7import "internal/abi"
8
9func cgoSigtramp()
10
11//go:nosplit
12//go:nowritebarrierrec
13func setsig(i uint32, fn uintptr) {
14	var sa sigactiont
15	sa.sa_flags = _SA_SIGINFO | _SA_ONSTACK | _SA_RESTART
16	sa.sa_mask = sigset_all
17	if fn == abi.FuncPCABIInternal(sighandler) { // abi.FuncPCABIInternal(sighandler) matches the callers in signal_unix.go
18		if iscgo {
19			fn = abi.FuncPCABI0(cgoSigtramp)
20		} else {
21			fn = abi.FuncPCABI0(sigtramp)
22		}
23	}
24	sa.sa_handler = fn
25	sigaction(i, &sa, nil)
26}
27