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- /* syscall - indirect system call.
- Copyright (C) 2005-2019 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/>. */
- #include <sysdep.h>
- /* We don't need a special syscall to implement syscall(). It won't work
- reliably with 64-bit arguments (but that is true on many modern platforms).
- */
- ENTRY (syscall)
- mov r2, r4
- mov r4, r5
- mov r5, r6
- mov r6, r7
- ldw r7, 0(sp)
- ldw r8, 4(sp)
- ldw r9, 8(sp)
- trap
- bne r7, zero, SYSCALL_ERROR_LABEL
- ret
- PSEUDO_END (syscall)
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