| /* Copyright (C) 2001-2014 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> |
| |
| #include <sys/asm.h> |
| |
| /* Usage: |
| long syscall (syscall_number, arg1, arg2, arg3, arg4, arg5, arg6, arg7) |
| |
| We need to do some arg shifting, syscall_number will be in v0. */ |
| |
| |
| .text |
| NESTED (syscall, SZREG, ra) |
| .mask 0x00010000, -SZREG |
| .fmask 0x00000000, 0 |
| PTR_ADDIU sp, -SZREG |
| cfi_adjust_cfa_offset (SZREG) |
| REG_S s0, (sp) |
| cfi_rel_offset (s0, 0) |
| |
| move s0, a0 |
| move a0, a1 /* shift arg1 - arg7. */ |
| move a1, a2 |
| move a2, a3 |
| move a3, a4 |
| move a4, a5 |
| move a5, a6 |
| move a6, a7 |
| |
| move v0, s0 /* Syscall number -> v0 */ |
| syscall /* Do the system call. */ |
| |
| REG_L s0, (sp) |
| cfi_restore (s0) |
| PTR_ADDIU sp, SZREG |
| cfi_adjust_cfa_offset (-SZREG) |
| bne a3, zero, L(error) |
| |
| ret |
| |
| L(error): |
| SETUP_GP64_REG (a0, syscall) |
| PTR_LA t9, __syscall_error |
| RESTORE_GP64_REG |
| jr t9 |
| |
| END (syscall) |
