| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License.. |
| |
| //! Global constructor/destructor support |
| |
| /// global_ctors_object is the base macro of implementing constructors. |
| /// |
| /// global_ctors_object registers functions to the `.init_array` section |
| /// of the generated enclave binary. On the first ecall of enclave's execution, |
| /// SGX would execute these registered functions and thus initialize data |
| /// structures. |
| #[macro_export] |
| macro_rules! global_ctors_object { |
| ($var_name:ident, $func_name:ident = $func:block) => { |
| cfg_if! { |
| if #[cfg(target_os = "linux")] { |
| #[link_section = ".init_array"] |
| #[no_mangle] |
| pub static $var_name: fn() = $func_name; |
| } else if #[cfg(target_os = "windows")] { |
| #[no_mangle] |
| pub static $var_name: fn() = $func_name; |
| } else if #[cfg(target_os = "macos")] { |
| #[no_mangle] |
| pub static $var_name: fn() = $func_name; |
| } else { |
| |
| } |
| } |
| #[no_mangle] |
| pub fn $func_name() { |
| { |
| $func |
| }; |
| } |
| }; |
| } |
| |
| #[macro_export] |
| macro_rules! global_dtors_object { |
| ($var_name:ident, $func_name:ident = $func:block) => { |
| cfg_if! { |
| if #[cfg(target_os = "linux")] { |
| #[link_section = ".fini_array"] |
| #[no_mangle] |
| pub static $var_name: fn() = $func_name; |
| } else if #[cfg(target_os = "windows")] { |
| #[no_mangle] |
| pub static $var_name: fn() = $func_name; |
| } else if #[cfg(target_os = "macos")] { |
| #[no_mangle] |
| pub static $var_name: fn() = $func_name; |
| } else { |
| |
| } |
| } |
| #[no_mangle] |
| pub fn $func_name() { |
| { |
| $func |
| }; |
| } |
| }; |
| } |