1 // Copyright 2016 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 // +build cgo 6 // +build linux 7 // +build mips64 mips64le 8 9 #include <pthread.h> 10 #include <string.h> 11 #include <signal.h> 12 #include "libcgo.h" 13 #include "libcgo_unix.h" 14 15 static void *threadentry(void*); 16 17 void (*x_cgo_inittls)(void **tlsg, void **tlsbase); 18 void (*setg_gcc)(void*); 19 20 void 21 _cgo_sys_thread_start(ThreadStart *ts) 22 { 23 pthread_attr_t attr; 24 sigset_t ign, oset; 25 pthread_t p; 26 size_t size; 27 int err; 28 29 sigfillset(&ign); 30 pthread_sigmask(SIG_SETMASK, &ign, &oset); 31 32 // Not sure why the memset is necessary here, 33 // but without it, we get a bogus stack size 34 // out of pthread_attr_getstacksize. C'est la Linux. 35 memset(&attr, 0, sizeof attr); 36 pthread_attr_init(&attr); 37 size = 0; 38 pthread_attr_getstacksize(&attr, &size); 39 // Leave stacklo=0 and set stackhi=size; mstart will do the rest. 40 ts->g->stackhi = size; 41 err = _cgo_try_pthread_create(&p, &attr, threadentry, ts); 42 43 pthread_sigmask(SIG_SETMASK, &oset, nil); 44 45 if (err != 0) { 46 fatalf("pthread_create failed: %s", strerror(err)); 47 } 48 } 49 50 extern void crosscall1(void (*fn)(void), void (*setg_gcc)(void*), void *g); 51 static void* 52 threadentry(void *v) 53 { 54 ThreadStart ts; 55 56 ts = *(ThreadStart*)v; 57 free(v); 58 59 crosscall1(ts.fn, setg_gcc, (void*)ts.g); 60 return nil; 61 } 62 63 void 64 x_cgo_init(G *g, void (*setg)(void*), void **tlsg, void **tlsbase) 65 { 66 pthread_attr_t attr; 67 size_t size; 68 69 setg_gcc = setg; 70 pthread_attr_init(&attr); 71 pthread_attr_getstacksize(&attr, &size); 72 g->stacklo = (uintptr)&attr - size + 4096; 73 pthread_attr_destroy(&attr); 74 75 if (x_cgo_inittls) { 76 x_cgo_inittls(tlsg, tlsbase); 77 } 78 } 79
