42 lines
1.4 KiB
C
42 lines
1.4 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2012 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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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 License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#if defined __x86_64__ && defined __ILP32__
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/* The x32 ABI defines all of its syscalls with bit 30 set, which causes
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issues when attempting to use syscalls as simple indices into an array.
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Instead, use the syscall id & ~SYSCALL_MASK as the index, and | the
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internal id with the syscall mask as needed.
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*/
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#include <asm/unistd.h>
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#define SYSCALL_TO_INDEX(x) ((x) & ~__X32_SYSCALL_BIT)
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#define INDEX_TO_SYSCALL(x) ((x) | __X32_SYSCALL_BIT)
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#else
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#define SYSCALL_TO_INDEX(x) (x)
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#define INDEX_TO_SYSCALL(x) (x)
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#endif
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const char *syscall_to_name(int id);
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int syscall_from_name(const char *name);
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int syscall_max(void);
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