text: // 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 "libcgo.h"
  
  static void threadentry(void*);
  
  /* 1MB is default stack size for 32-bit Windows.
     Allocation granularity on Windows is typically 64 KB.
     The constant is also hardcoded in cmd/ld/pe.c (keep synchronized). */
  #define STACKSIZE (1*1024*1024)
  
  void
  x_cgo_init(G *g)
  {
  	int tmp;
  	g->stackguard = (uintptr)&tmp - STACKSIZE + 8*1024;
  }
  
  
  void
  _cgo_sys_thread_start(ThreadStart *ts)
  {
  	uintptr_t thandle;
  
  	thandle = _beginthread(threadentry, 0, ts);
  	if(thandle == -1) {
  		fprintf(stderr, "runtime: failed to create new OS thread (%d)\n", errno);
  		abort();
  	}
  }
  
  static void
  threadentry(void *v)
  {
  	ThreadStart ts;
  
  	ts = *(ThreadStart*)v;
  	free(v);
  
  	ts.g->stackbase = (uintptr)&ts;
  	ts.g->stackguard = (uintptr)&ts - STACKSIZE + 8*1024;
  
  	/*
  	 * Set specific keys in thread local storage.
  	 */
  	asm volatile (
  		"movl %0, %%fs:0x14\n"	// MOVL tls0, 0x14(FS)
  		"movl %%fs:0x14, %%eax\n"	// MOVL 0x14(FS), tmp
  		"movl %1, 0(%%eax)\n"	// MOVL g, 0(FS)
  		"movl %2, 4(%%eax)\n"	// MOVL m, 4(FS)
  		:: "r"(ts.tls), "r"(ts.g), "r"(ts.m) : "%eax"
  	);
  	
  	crosscall_386(ts.fn);
  }
  