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// Copyright 2014 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.
//go:build ppc64 || ppc64le
#include <pthread.h>
#include <string.h>
#include <signal.h>
#include "libcgo.h"
#include "libcgo_unix.h"
static void *threadentry(void*);
void (*x_cgo_inittls)(void **tlsg, void **tlsbase);
static void (*setg_gcc)(void*);
void
x_cgo_init(G *g, void (*setg)(void*), void **tlsbase)
{
setg_gcc = setg;
_cgo_set_stacklo(g, NULL);
}
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);
// Leave stacklo=0 and set stackhi=size; mstart will do the rest.
ts->g->stackhi = size;
err = _cgo_try_pthread_create(&p, &attr, threadentry, ts);
pthread_sigmask(SIG_SETMASK, &oset, nil);
if (err != 0) {
fatalf("pthread_create failed: %s", strerror(err));
}
}
extern void crosscall_ppc64(void (*fn)(void), void *g);
static void*
threadentry(void *v)
{
ThreadStart ts;
ts = *(ThreadStart*)v;
_cgo_tsan_acquire();
free(v);
_cgo_tsan_release();
// Save g for this thread in C TLS
setg_gcc((void*)ts.g);
crosscall_ppc64(ts.fn, (void*)ts.g);
return nil;
}