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-rw-r--r--libgo/runtime/go-caller.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/libgo/runtime/go-caller.c b/libgo/runtime/go-caller.c
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+++ b/libgo/runtime/go-caller.c
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+/* go-caller.c -- runtime.Caller and runtime.FuncForPC for Go.
+
+ 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. */
+
+/* Implement runtime.Caller. */
+
+#include <stdint.h>
+
+#include "go-string.h"
+
+/* The values returned by runtime.Caller. */
+
+struct caller_ret
+{
+ uintptr_t pc;
+ struct __go_string file;
+ int line;
+ _Bool ok;
+};
+
+/* Implement runtime.Caller. */
+
+struct caller_ret Caller (int n) asm ("libgo_runtime.runtime.Caller");
+
+struct caller_ret
+Caller (int n __attribute__ ((unused)))
+{
+ struct caller_ret ret;
+
+ /* A proper implementation needs to dig through the debugging
+ information. */
+ ret.pc = (uint64_t) (uintptr_t) __builtin_return_address (0);
+ ret.file.__data = NULL;
+ ret.file.__length = 0;
+ ret.line = 0;
+ ret.ok = 0;
+
+ return ret;
+}
+
+/* Implement runtime.FuncForPC. */
+
+void *FuncForPC (uintptr_t) asm ("libgo_runtime.runtime.FuncForPC");
+
+void *
+FuncForPC(uintptr_t pc __attribute__ ((unused)))
+{
+ return NULL;
+}