mirror of
https://github.com/golang/go.git
synced 2025-12-08 06:10:04 +00:00
59 lines
1.2 KiB
C
59 lines
1.2 KiB
C
|
// 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 <pthread.h>
|
||
|
|
#include "libcgo.h"
|
||
|
|
|
||
|
|
static void* threadentry(void*);
|
||
|
|
|
||
|
|
void
|
||
|
|
xinitcgo(void)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
void (*initcgo)(void) = xinitcgo;
|
||
|
|
|
||
|
|
void
|
||
|
|
libcgo_sys_thread_start(ThreadStart *ts)
|
||
|
|
{
|
||
|
|
pthread_attr_t attr;
|
||
|
|
pthread_t p;
|
||
|
|
size_t size;
|
||
|
|
|
||
|
|
pthread_attr_init(&attr);
|
||
|
|
pthread_attr_getstacksize(&attr, &size);
|
||
|
|
ts->g->stackguard = size;
|
||
|
|
pthread_create(&p, &attr, threadentry, ts);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void*
|
||
|
|
threadentry(void *v)
|
||
|
|
{
|
||
|
|
ThreadStart ts;
|
||
|
|
|
||
|
|
ts = *(ThreadStart*)v;
|
||
|
|
free(v);
|
||
|
|
|
||
|
|
ts.g->stackbase = (uintptr)&ts;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* libcgo_sys_thread_start set stackguard to stack size;
|
||
|
|
* change to actual guard pointer.
|
||
|
|
*/
|
||
|
|
ts.g->stackguard = (uintptr)&ts - ts.g->stackguard + 4096;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Set specific keys. On Linux/ELF, the thread local storage
|
||
|
|
* is just before %fs:0. Our dynamic 6.out's reserve 16 bytes
|
||
|
|
* for the two words g and m at %fs:-16 and %fs:-8.
|
||
|
|
*/
|
||
|
|
asm volatile (
|
||
|
|
"movq %0, %%fs:-16\n" // MOVL g, -16(FS)
|
||
|
|
"movq %1, %%fs:-8\n" // MOVL m, -8(FS)
|
||
|
|
:: "r"(ts.g), "r"(ts.m)
|
||
|
|
);
|
||
|
|
crosscall_amd64(ts.fn);
|
||
|
|
return nil;
|
||
|
|
}
|