mirror of
https://github.com/golang/go
synced 2024-10-04 20:21:22 -06:00
9569c67a6b
R=hectorchu, alex.brainman CC=golang-dev https://golang.org/cl/5519054
60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include "libcgo.h"
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static void *threadentry(void*);
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/* 1MB is default stack size for 32-bit Windows.
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Allocation granularity on Windows is typically 64 KB.
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The constant is also hardcoded in cmd/ld/pe.c (keep synchronized). */
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#define STACKSIZE (1*1024*1024)
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static void
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xinitcgo(G *g)
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{
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int tmp;
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g->stackguard = (uintptr)&tmp - STACKSIZE + 8*1024;
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}
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void (*initcgo)(G*) = xinitcgo;
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void
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libcgo_sys_thread_start(ThreadStart *ts)
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{
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_beginthread(threadentry, 0, ts);
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}
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static void*
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threadentry(void *v)
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{
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ThreadStart ts;
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void *tls0;
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ts = *(ThreadStart*)v;
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free(v);
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ts.g->stackbase = (uintptr)&ts;
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ts.g->stackguard = (uintptr)&ts - STACKSIZE + 8*1024;
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/*
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* Set specific keys in thread local storage.
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*/
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tls0 = (void*)LocalAlloc(LPTR, 32);
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asm volatile (
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"movl %0, %%fs:0x14\n" // MOVL tls0, 0x14(FS)
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"movl %%fs:0x14, %%eax\n" // MOVL 0x14(FS), tmp
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"movl %1, 0(%%eax)\n" // MOVL g, 0(FS)
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"movl %2, 4(%%eax)\n" // MOVL m, 4(FS)
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:: "r"(tls0), "r"(ts.g), "r"(ts.m) : "%eax"
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);
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crosscall_386(ts.fn);
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LocalFree(tls0);
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return nil;
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}
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