1// Copyright 2009 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
5//go:build netbsd
6
7#include <string.h>
8#include <signal.h>
9
10static void
11threadentry_platform(void)
12{
13 // On NetBSD, a new thread inherits the signal stack of the
14 // creating thread. That confuses minit, so we remove that
15 // signal stack here before calling the regular mstart. It's
16 // a bit baroque to remove a signal stack here only to add one
17 // in minit, but it's a simple change that keeps NetBSD
18 // working like other OS's. At this point all signals are
19 // blocked, so there is no race.
20 stack_t ss;
21 memset(&ss, 0, sizeof ss);
22 ss.ss_flags = SS_DISABLE;
23 sigaltstack(&ss, NULL);
24}
25
26void (*x_cgo_threadentry_platform)(void) = threadentry_platform;
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