gcc/libgo/runtime/go-caller.c
Ian Lance Taylor a3bc69c529 re PR go/46958 (ARM Go Does Not Compile (__builtin_return_address))
PR go/46958
	PR go/46965
Call __builtin_return_address with 0 rather than 1.

From-SVN: r168495
2011-01-05 00:07:59 +00:00

52 lines
1.0 KiB
C

/* 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;
}