| // 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; |
| } |