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author | Florian Weimer <fweimer@redhat.com> | 2020-02-18 14:42:41 +0100 |
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committer | Florian Weimer <fweimer@redhat.com> | 2020-02-18 15:12:25 +0100 |
commit | f4349837d93b4dfe9ba09791e280ee2d6c99919f (patch) | |
tree | 2d9b57dc8a2b38bc369e0e0f89232046d8be38ca /sysdeps/x86/elf-initfini.h | |
parent | 6e05978f0c30e52420e086cc3156655471e6fb0a (diff) | |
download | glibc-f4349837d93b4dfe9ba09791e280ee2d6c99919f.tar.gz glibc-f4349837d93b4dfe9ba09791e280ee2d6c99919f.tar.xz glibc-f4349837d93b4dfe9ba09791e280ee2d6c99919f.zip |
Introduce <elf-initfini.h> and ELF_INITFINI for all architectures
This supersedes the init_array sysdeps directory. It allows us to check for ELF_INITFINI in both C and assembler code, and skip DT_INIT and DT_FINI processing completely on newer architectures. A new header file is needed because <dl-machine.h> is incompatible with assembler code. <sysdep.h> is compatible with assembler code, but it cannot be included in all assembler files because on some architectures, it redefines register names, and some assembler files conflict with that. <elf-initfini.h> is replicated for legacy architectures which need DT_INIT/DT_FINI support. New architectures follow the generic default and disable it.
Diffstat (limited to 'sysdeps/x86/elf-initfini.h')
-rw-r--r-- | sysdeps/x86/elf-initfini.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/sysdeps/x86/elf-initfini.h b/sysdeps/x86/elf-initfini.h new file mode 100644 index 0000000000..7a48ebda92 --- /dev/null +++ b/sysdeps/x86/elf-initfini.h @@ -0,0 +1,20 @@ +/* Determine DT_INIT/DT_FINI support in the dynamic loader. x86 version. + Copyright (C) 2020 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/>. */ + +/* Enable DT_INIT/DT_FINI support. */ +#define ELF_INITFINI 1 |