mirror of
https://github.com/golang/go
synced 2024-11-25 22:17:58 -07:00
133a158bd8
better mach binaries. cgo working on darwin+linux amd64+386. eliminated context switches - pi is 30x faster. add libcgo to build. on snow leopard: - non-cgo binaries work; all tests pass. - cgo binaries work on amd64 but not 386. R=r DELTA=2031 (1316 added, 626 deleted, 89 changed) OCL=35264 CL=35304
58 lines
1.1 KiB
C
58 lines
1.1 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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#include <pthread.h>
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#include "libcgo.h"
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static void *threadentry(void*);
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void
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initcgo(void)
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{
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}
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void
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libcgo_sys_thread_start(ThreadStart *ts)
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{
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pthread_attr_t attr;
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pthread_t p;
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size_t size;
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pthread_attr_init(&attr);
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pthread_attr_getstacksize(&attr, &size);
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ts->g->stackguard = size;
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pthread_create(&p, &attr, threadentry, 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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ts = *(ThreadStart*)v;
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free(v);
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ts.g->stackbase = (uintptr)&ts;
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/*
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* libcgo_sys_thread_start set stackguard to stack size;
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* change to actual guard pointer.
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*/
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ts.g->stackguard = (uintptr)&ts - ts.g->stackguard + 4096;
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/*
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* Set specific keys. On Linux/ELF, the thread local storage
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* is just before %gs:0. Our dynamic 8.out's reserve 8 bytes
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* for the two words g and m at %gs:-8 and %gs:-4.
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*/
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asm volatile (
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"movl %0, %%gs:-8\n" // MOVL g, -8(GS)
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"movl %1, %%gs:-4\n" // MOVL m, -4(GS)
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:: "r"(ts.g), "r"(ts.m)
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);
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crosscall_386(ts.fn);
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return nil;
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}
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