diff options
Diffstat (limited to 'src/pkg/runtime/cgo/gcc_darwin_amd64.c')
-rw-r--r-- | src/pkg/runtime/cgo/gcc_darwin_amd64.c | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/src/pkg/runtime/cgo/gcc_darwin_amd64.c b/src/pkg/runtime/cgo/gcc_darwin_amd64.c deleted file mode 100644 index 65d381633..000000000 --- a/src/pkg/runtime/cgo/gcc_darwin_amd64.c +++ /dev/null @@ -1,135 +0,0 @@ -// 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 <string.h> /* for strerror */ -#include <pthread.h> -#include <signal.h> -#include "libcgo.h" - -static void* threadentry(void*); -static pthread_key_t k1, k2; - -#define magic1 (0x23581321345589ULL) - -static void -inittls(void) -{ - uint64 x, y; - pthread_key_t tofree[128], k; - int i, ntofree; - int havek1, havek2; - - /* - * Same logic, code as darwin_386.c:/inittls, except that words - * are 8 bytes long now, and the thread-local storage starts - * at 0x60 on Leopard / Snow Leopard. So the offsets are - * 0x60+8*0x108 = 0x8a0 and 0x60+8*0x109 = 0x8a8. - * - * The linker and runtime hard-code these constant offsets - * from %gs where we expect to find m and g. - * Known to ../../../cmd/6l/obj.c:/8a0 - * and to ../sys_darwin_amd64.s:/8a0 - * - * As disgusting as on the 386; same justification. - */ - havek1 = 0; - havek2 = 0; - ntofree = 0; - while(!havek1 || !havek2) { - if(pthread_key_create(&k, nil) < 0) { - fprintf(stderr, "runtime/cgo: pthread_key_create failed\n"); - abort(); - } - pthread_setspecific(k, (void*)magic1); - asm volatile("movq %%gs:0x8a0, %0" : "=r"(x)); - asm volatile("movq %%gs:0x8a8, %0" : "=r"(y)); - if(x == magic1) { - havek1 = 1; - k1 = k; - } else if(y == magic1) { - havek2 = 1; - k2 = k; - } else { - if(ntofree >= nelem(tofree)) { - fprintf(stderr, "runtime/cgo: could not obtain pthread_keys\n"); - fprintf(stderr, "\ttried"); - for(i=0; i<ntofree; i++) - fprintf(stderr, " %#x", (unsigned)tofree[i]); - fprintf(stderr, "\n"); - abort(); - } - tofree[ntofree++] = k; - } - pthread_setspecific(k, 0); - } - - /* - * We got the keys we wanted. Free the others. - */ - for(i=0; i<ntofree; i++) - pthread_key_delete(tofree[i]); -} - -void -x_cgo_init(G *g) -{ - pthread_attr_t attr; - size_t size; - - pthread_attr_init(&attr); - pthread_attr_getstacksize(&attr, &size); - g->stackguard = (uintptr)&attr - size + 4096; - pthread_attr_destroy(&attr); - - inittls(); -} - - -void -_cgo_sys_thread_start(ThreadStart *ts) -{ - pthread_attr_t attr; - sigset_t ign, oset; - pthread_t p; - size_t size; - int err; - - sigfillset(&ign); - pthread_sigmask(SIG_SETMASK, &ign, &oset); - - pthread_attr_init(&attr); - pthread_attr_getstacksize(&attr, &size); - ts->g->stackguard = size; - err = pthread_create(&p, &attr, threadentry, ts); - - pthread_sigmask(SIG_SETMASK, &oset, nil); - - if (err != 0) { - fprintf(stderr, "runtime/cgo: pthread_create failed: %s\n", strerror(err)); - abort(); - } -} - -static void* -threadentry(void *v) -{ - ThreadStart ts; - - ts = *(ThreadStart*)v; - free(v); - - ts.g->stackbase = (uintptr)&ts; - - /* - * _cgo_sys_thread_start set stackguard to stack size; - * change to actual guard pointer. - */ - ts.g->stackguard = (uintptr)&ts - ts.g->stackguard + 4096; - - pthread_setspecific(k1, (void*)ts.g); - pthread_setspecific(k2, (void*)ts.m); - - crosscall_amd64(ts.fn); - return nil; -} |