| /* Copyright (C) 2005-2014 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> |
| |
| /* syscall (int nr, ...) |
| |
| AArch64 system calls take between 0 and 7 arguments. On entry here nr |
| is in w0 and any other system call arguments are in register x1..x7. |
| |
| For kernel entry we need to move the system call nr to x8 then |
| load the remaining arguments to register. */ |
| |
| ENTRY (syscall) |
| uxtw x8, w0 |
| mov x0, x1 |
| mov x1, x2 |
| mov x2, x3 |
| mov x3, x4 |
| mov x4, x5 |
| mov x5, x6 |
| mov x6, x7 |
| svc 0x0 |
| cmn x0, #4095 |
| b.cs 1f |
| RET |
| 1: |
| b SYSCALL_ERROR |
| PSEUDO_END (syscall) |
