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libcgo: set g, m in thread local storage for windows 386.

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R=rsc
CC=golang-dev, vcc
https://golang.org/cl/2216051
This commit is contained in:
Wei Guangjing 2010-09-27 09:44:56 -04:00 committed by Russ Cox
parent f2db47d427
commit 6a624fa5f5
1 changed files with 23 additions and 13 deletions
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36
src/libcgo/windows_386.c
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@ -20,26 +20,36 @@ initcgo(void)
void void
libcgo_sys_thread_start(ThreadStart *ts) libcgo_sys_thread_start(ThreadStart *ts)
{ {
ts->g->stackguard = STACKSIZE; ts->g->stackguard = STACKSIZE;
_beginthread(threadentry, STACKSIZE, ts); _beginthread(threadentry, STACKSIZE, ts);
} }
static void* static void*
threadentry(void *v) threadentry(void *v)
{ {
ThreadStart ts; ThreadStart ts;
ts = *(ThreadStart*)v; ts = *(ThreadStart*)v;
free(v); free(v);
ts.g->stackbase = (uintptr)&ts; ts.g->stackbase = (uintptr)&ts;
/* /*
* libcgo_sys_thread_start set stackguard to stack size; * libcgo_sys_thread_start set stackguard to stack size;
* change to actual guard pointer. * change to actual guard pointer.
*/ */
ts.g->stackguard = (uintptr)&ts - ts.g->stackguard + 4096; ts.g->stackguard = (uintptr)&ts - ts.g->stackguard + 4096;
crosscall_386(ts.fn); /*
return nil; * Set specific keys in thread local storage.
*/
asm volatile (
"MOVL %%fs:0x2c, %%eax\n" // MOVL 0x24(FS), tmp
"movl %0, 0(%%eax)\n" // MOVL g, 0(FS)
"movl %1, 4(%%eax)\n" // MOVL m, 4(FS)
:: "r"(ts.g), "r"(ts.m) : "%eax"
);
crosscall_386(ts.fn);
return nil;
} }