| /* Support code for fibers and multithreading. | |
| Copyright (C) 2019-2025 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 |