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// 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.
// +build cgo
#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->stacklo = (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->stackhi = (uintptr)&ts;
ts.g->stacklo = (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)
:: "r"(ts.tls), "r"(ts.g) : "%eax"
);
crosscall_386(ts.fn);
}
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