// 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 #include "libcgo.h" static void *threadentry(void*); void initcgo(void) { } 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 %gs:0. Our dynamic 8.out's reserve 8 bytes * for the two words g and m at %gs:-8 and %gs:-4. */ asm volatile ( "movl %0, %%gs:-8\n" // MOVL g, -8(GS) "movl %1, %%gs:-4\n" // MOVL m, -4(GS) :: "r"(ts.g), "r"(ts.m) ); crosscall_386(ts.fn); return nil; }