/* Define symbols used by rseq. Copyright (C) 2024-2025 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ #include <sysdep.h> #if __WORDSIZE == 64 #define RSEQ_OFFSET_SIZE 8 #else #define RSEQ_OFFSET_SIZE 4 #endif /* Some targets define a macro to denote the zero register. */ #undef zero /* Define 3 symbols: '__rseq_size' is public const and then '_rseq_size' and '__GI___rseq_size' (both aliases of '__rseq_size') are hidden, '_rseq_size' is writable for internal use by the dynamic linker which will initialize the value the symbols point to before copy relocations take place. */ .globl __rseq_size .type __rseq_size, %object .size __rseq_size, 4 .hidden __GI___rseq_size .globl __GI___rseq_size .type __GI___rseq_size, %object .size __GI___rseq_size, 4 .hidden _rseq_size .globl _rseq_size .type _rseq_size, %object .size _rseq_size, 4 .section .data.rel.ro .balign 4 __rseq_size: __GI___rseq_size: _rseq_size: .zero 4 /* Define 3 symbols: '__rseq_offset' is public const and then '_rseq_offset' and '__GI___rseq_offset' (both aliases of '__rseq_offset') are hidden, '_rseq_offset' is writable for internal use by the dynamic linker which will initialize the value the symbols point to before copy relocations take place. */ .globl __rseq_offset .type __rseq_offset, %object .size __rseq_offset, RSEQ_OFFSET_SIZE .hidden __GI___rseq_offset .globl __GI___rseq_offset .type __GI___rseq_offset, %object .size __GI___rseq_offset, RSEQ_OFFSET_SIZE .hidden _rseq_offset .globl _rseq_offset .type _rseq_offset, %object .size _rseq_offset, RSEQ_OFFSET_SIZE .section .data.rel.ro .balign RSEQ_OFFSET_SIZE __rseq_offset: __GI___rseq_offset: _rseq_offset: .zero RSEQ_OFFSET_SIZE