From 4480d6a9272cdf90ff958163fcdc3819216e8889 Mon Sep 17 00:00:00 2001 From: Rahul Chaudhry Date: Wed, 25 Nov 2015 17:31:57 -0800 Subject: [PATCH] runtime/cgo: define x_cgo_inittls() for android/arm64. On android, runtime.tls_g is a normal variable. TLS offset is computed in x_cgo_inittls. Change-Id: I64cfd3543040776dcdf73cad8dba54fc6aaf6f35 Reviewed-on: https://go-review.googlesource.com/17245 Reviewed-by: David Crawshaw --- src/runtime/cgo/gcc_android_arm64.c | 38 +++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 src/runtime/cgo/gcc_android_arm64.c diff --git a/src/runtime/cgo/gcc_android_arm64.c b/src/runtime/cgo/gcc_android_arm64.c new file mode 100644 index 0000000000..5d4cefee60 --- /dev/null +++ b/src/runtime/cgo/gcc_android_arm64.c @@ -0,0 +1,38 @@ +// Copyright 2015 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 +#include +#include +#include +#include "libcgo.h" + +#define magic1 (0x23581321345589ULL) + +// inittls allocates a thread-local storage slot for g. +// +// It finds the first available slot using pthread_key_create and uses +// it as the offset value for runtime.tlsg. +static void +inittls(void **tlsg, void **tlsbase) +{ + pthread_key_t k; + int i, err; + + err = pthread_key_create(&k, nil); + if(err != 0) { + fatalf("pthread_key_create failed: %d", err); + } + pthread_setspecific(k, (void*)magic1); + for (i=0; i