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47 lines
1.8 KiB
C
47 lines
1.8 KiB
C
/* System-specific settings for dynamic linker code. i386 version.
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Copyright (C) 2002-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _LINUX_I386_DL_SYSDEP_H
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#include_next <dl-sysdep.h>
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/* Traditionally system calls have been made using int $0x80. A
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second method was introduced which, if possible, will use the
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sysenter/syscall instructions. To signal the presence and where to
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find the code the kernel passes an AT_SYSINFO value in the
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auxiliary vector to the application. */
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#define NEED_DL_SYSINFO 1
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#ifndef __ASSEMBLER__
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extern void _dl_sysinfo_int80 (void) attribute_hidden;
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# define DL_SYSINFO_DEFAULT (uintptr_t) _dl_sysinfo_int80
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# define DL_SYSINFO_IMPLEMENTATION \
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asm (".text\n\t" \
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".type _dl_sysinfo_int80,@function\n\t" \
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".hidden _dl_sysinfo_int80\n" \
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CFI_STARTPROC "\n" \
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"_dl_sysinfo_int80:\n\t" \
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"int $0x80;\n\t" \
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"ret;\n\t" \
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CFI_ENDPROC "\n" \
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".size _dl_sysinfo_int80,.-_dl_sysinfo_int80\n\t" \
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".previous");
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#endif
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#endif /* dl-sysdep.h */
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