diff options
Diffstat (limited to 'REORG.TODO/sysdeps/unix/sysv/linux/i386/dl-sysdep.h')
| -rw-r--r-- | REORG.TODO/sysdeps/unix/sysv/linux/i386/dl-sysdep.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/i386/dl-sysdep.h b/REORG.TODO/sysdeps/unix/sysv/linux/i386/dl-sysdep.h new file mode 100644 index 0000000000..8a3af5e27b --- /dev/null +++ b/REORG.TODO/sysdeps/unix/sysv/linux/i386/dl-sysdep.h @@ -0,0 +1,46 @@ +/* System-specific settings for dynamic linker code. i386 version. + Copyright (C) 2002-2017 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 + <http://www.gnu.org/licenses/>. */ + +#ifndef _LINUX_I386_DL_SYSDEP_H + +#include_next <dl-sysdep.h> + +/* Traditionally system calls have been made using int $0x80. A + second method was introduced which, if possible, will use the + sysenter/syscall instructions. To signal the presence and where to + find the code the kernel passes an AT_SYSINFO value in the + auxiliary vector to the application. */ +#define NEED_DL_SYSINFO 1 + +#ifndef __ASSEMBLER__ +extern void _dl_sysinfo_int80 (void) attribute_hidden; +# define DL_SYSINFO_DEFAULT (uintptr_t) _dl_sysinfo_int80 +# define DL_SYSINFO_IMPLEMENTATION \ + asm (".text\n\t" \ + ".type _dl_sysinfo_int80,@function\n\t" \ + ".hidden _dl_sysinfo_int80\n" \ + CFI_STARTPROC "\n" \ + "_dl_sysinfo_int80:\n\t" \ + "int $0x80;\n\t" \ + "ret;\n\t" \ + CFI_ENDPROC "\n" \ + ".size _dl_sysinfo_int80,.-_dl_sysinfo_int80\n\t" \ + ".previous"); +#endif + +#endif /* dl-sysdep.h */ |