| /* Support code for fibers and multithreading. |
| Copyright (C) 2019-2021 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify it under |
| the terms of the GNU General Public License as published by the Free |
| Software Foundation; either version 3, or (at your option) any later |
| version. |
| |
| GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
| WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| for more details. |
| |
| Under Section 7 of GPL version 3, you are granted additional |
| permissions described in the GCC Runtime Library Exception, version |
| 3.1, as published by the Free Software Foundation. |
| |
| You should have received a copy of the GNU General Public License and |
| a copy of the GCC Runtime Library Exception along with this program; |
| see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #if (__linux__ || __FreeBSD__ || __NetBSD__ || __OpenBSD__ || __DragonFly__) && __ELF__ |
| /* |
| * Mark the resulting object file as not requiring execution permissions on |
| * stack memory. The absence of this section would mark the whole resulting |
| * library as requiring an executable stack, making it impossible to |
| * dynamically load druntime on several Linux platforms where this is |
| * forbidden due to security policies. |
| */ |
| .section .note.GNU-stack,"",%progbits |
| #endif |
| |
| /* Let preprocessor tell us if C symbols have a prefix: __USER_LABEL_PREFIX__ */ |
| #ifdef __USER_LABEL_PREFIX__ |
| #define __CONCAT2(a, b) a ## b |
| #define __CONCAT(a, b) __CONCAT2(a, b) |
| #define CSYM(name) __CONCAT(__USER_LABEL_PREFIX__, name) |
| #else |
| #define CSYM(name) name |
| #endif |
