Adding upstream version 1.21.8.upstream/1.21.8

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

1 files changed, 20 insertions, 0 deletions

diff --git a/src/runtime/mem_wasm.go b/src/runtime/mem_wasm.go
new file mode 100644
index 0000000..d9d3270
--- /dev/null
+++ b/src/runtime/mem_wasm.go
@@ -0,0 +1,20 @@
+// Copyright 2023 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 "unsafe"
+
+func sbrk(n uintptr) unsafe.Pointer {
+	grow := divRoundUp(n, physPageSize)
+	size := growMemory(int32(grow))
+	if size < 0 {
+		return nil
+	}
+	resetMemoryDataView()
+	return unsafe.Pointer(uintptr(size) * physPageSize)
+}
+
+// Implemented in src/runtime/sys_wasm.s
+func growMemory(pages int32) int32