Adding upstream version 1.21.8.upstream/1.21.8

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 37 insertions, 0 deletions

diff --git a/src/runtime/os_linux_generic.go b/src/runtime/os_linux_generic.go
new file mode 100644
index 0000000..15fafc1
--- /dev/null
+++ b/src/runtime/os_linux_generic.go
@@ -0,0 +1,37 @@
+// 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.
+
+//go:build !mips && !mipsle && !mips64 && !mips64le && !s390x && !ppc64 && linux
+
+package runtime
+
+const (
+	_SS_DISABLE  = 2
+	_NSIG        = 65
+	_SIG_BLOCK   = 0
+	_SIG_UNBLOCK = 1
+	_SIG_SETMASK = 2
+)
+
+// It's hard to tease out exactly how big a Sigset is, but
+// rt_sigprocmask crashes if we get it wrong, so if binaries
+// are running, this is right.
+type sigset [2]uint32
+
+var sigset_all = sigset{^uint32(0), ^uint32(0)}
+
+//go:nosplit
+//go:nowritebarrierrec
+func sigaddset(mask *sigset, i int) {
+	(*mask)[(i-1)/32] |= 1 << ((uint32(i) - 1) & 31)
+}
+
+func sigdelset(mask *sigset, i int) {
+	(*mask)[(i-1)/32] &^= 1 << ((uint32(i) - 1) & 31)
+}
+
+//go:nosplit
+func sigfillset(mask *uint64) {
+	*mask = ^uint64(0)
+}