// 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.

#define WIN32_LEAN_AND_MEAN

#include <windows.h>

#include <process.h>

#include <stdlib.h>

#include <stdio.h>

#include <errno.h>

#include "libcgo.h"

#include "libcgo_windows.h"

static unsigned long __stdcall threadentry(void*);

static void (*setg_gcc)(void*);

static DWORD *tls_g;

void

x_cgo_init(G *g, void (*setg)(void*), void **tlsg, void **tlsbase)

{

setg_gcc = setg;

tls_g = (DWORD *)tlsg;

}

void

_cgo_sys_thread_start(ThreadStart *ts)

{

_cgo_beginthread(threadentry, ts);

}

extern void crosscall1(void (*fn)(void), void (*setg_gcc)(void*), void *g);

static unsigned long

__stdcall

threadentry(void *v)

{

ThreadStart ts;

ts = *(ThreadStart*)v;

free(v);

// minit queries stack bounds from the OS.

/*

* Set specific keys in thread local storage.

*/

asm volatile (

"movl %0, %%fs:0(%1)\n" // MOVL tls0, 0(tls_g)(FS)

"movl %%fs:0(%1), %%eax\n" // MOVL 0(tls_g)(FS), tmp

"movl %2, 0(%%eax)\n" // MOVL g, 0(AX)

:: "r"(ts.tls), "r"(*tls_g), "r"(ts.g) : "%eax"

);

crosscall1(ts.fn, setg_gcc, ts.g);

return 0;

}