// 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.

#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

#define nil ((void*)0)
#define nelem(x) (sizeof(x)/sizeof((x)[0]))

typedef uint32_t uint32;
typedef uintptr_t uintptr;

/*
 * The beginning of the per-goroutine structure,
 * as defined in ../pkg/runtime/runtime.h.
 * Just enough to edit these two fields.
 */
typedef struct G G;
struct G
{
	uintptr stackguard;
	uintptr stackbase;
};

/*
 * Arguments to the libcgo_thread_start call.
 * Also known to ../pkg/runtime/runtime.h.
 */
typedef struct ThreadStart ThreadStart;
struct ThreadStart
{
	uintptr m;
	G *g;
	void (*fn)(void);
};

/*
 * Called by 5c/6c/8c world.
 * Makes a local copy of the ThreadStart and
 * calls libcgo_sys_thread_start(ts).
 */
void libcgo_thread_start(ThreadStart *ts);

/*
 * Creates the new operating system thread (OS, arch dependent).
 */
void libcgo_sys_thread_start(ThreadStart *ts);

/*
 * Call fn in the 6c world, with m and g
 * set to the given parameters.
 */
void crosscall_amd64(uintptr m, G *g, void (*fn)(void));

/*
 * Call fn in the 8c world.
 */
void crosscall_386(void (*fn)(void));