runtime: record argument size in assembly functions
I have not done the system call stubs in sys_*.s.
I hope to avoid that, because those do not block, so those
frames will not appear in stack traces during garbage
collection.
R=golang-dev, dvyukov, khr
CC=golang-dev
https://golang.org/cl/11360043
diff --git a/src/pkg/runtime/funcdata.h b/src/pkg/runtime/funcdata.h
new file mode 100644
index 0000000..8fcadcb
--- /dev/null
+++ b/src/pkg/runtime/funcdata.h
@@ -0,0 +1,13 @@
+// Copyright 2013 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.
+
+// This file defines the IDs for PCDATA and FUNCDATA instructions
+// in Go binaries. It is included by both C and assembly, so it must
+// be written using #defines. It is included by the runtime package
+// as well as the compilers.
+
+#define PCDATA_ArgSize 0
+
+// To be used in assembly.
+#define ARGSIZE(n) PCDATA $PCDATA_ArgSize, $n
