Adding upstream version 1.21.8.upstream/1.21.8

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

1 files changed, 36 insertions, 0 deletions

diff --git a/src/runtime/sys_wasm.go b/src/runtime/sys_wasm.go
new file mode 100644
index 0000000..27f9432
--- /dev/null
+++ b/src/runtime/sys_wasm.go
@@ -0,0 +1,36 @@
+// Copyright 2018 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 runtime
+
+import (
+	"internal/goarch"
+	"runtime/internal/sys"
+	"unsafe"
+)
+
+type m0Stack struct {
+	_ [8192 * sys.StackGuardMultiplier]byte
+}
+
+var wasmStack m0Stack
+
+func wasmDiv()
+
+func wasmTruncS()
+func wasmTruncU()
+
+//go:wasmimport gojs runtime.wasmExit
+func wasmExit(code int32)
+
+// adjust Gobuf as it if executed a call to fn with context ctxt
+// and then stopped before the first instruction in fn.
+func gostartcall(buf *gobuf, fn, ctxt unsafe.Pointer) {
+	sp := buf.sp
+	sp -= goarch.PtrSize
+	*(*uintptr)(unsafe.Pointer(sp)) = buf.pc
+	buf.sp = sp
+	buf.pc = uintptr(fn)
+	buf.ctxt = ctxt
+}