git://sourceware.org / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 2c923c36 | 1 | /* Copyright (C) 2001, 2002, 2003, 2005 Free Software Foundation, Inc. |
| 9a197dcc RM |
2 | This file is part of the GNU C Library. |
| 3 | ||
| 4 | The GNU C Library is free software; you can redistribute it and/or | |
| 5 | modify it under the terms of the GNU Lesser General Public | |
| 6 | License as published by the Free Software Foundation; either | |
| 7 | version 2.1 of the License, or (at your option) any later version. | |
| 8 | ||
| 9 | The GNU C Library is distributed in the hope that it will be useful, | |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 | Lesser General Public License for more details. | |
| 13 | ||
| 14 | You should have received a copy of the GNU Lesser General Public | |
| 15 | License along with the GNU C Library; if not, write to the Free | |
| 16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
| 17 | 02111-1307 USA. */ | |
| 18 | ||
| 9a197dcc | 19 | #include <sysdep.h> |
| 9a197dcc | 20 | |
| a334319f UD |
21 | #include <sys/asm.h> |
| 22 | ||
| 2c923c36 AJ |
23 | /* Usage: |
| 24 | long syscall (syscall_number, arg1, arg2, arg3, arg4, arg5, arg6, arg7) | |
| a334319f | 25 | |
| 2c923c36 | 26 | We need to do some arg shifting, syscall_number will be in v0. */ |
| a334319f UD |
27 | |
| 28 | ||
| 29 | .text | |
| 2c923c36 AJ |
30 | NESTED (syscall, SZREG, ra) |
| 31 | .mask 0x00010000, -SZREG | |
| 32 | .fmask 0x00000000, 0 | |
| 33 | PTR_ADDIU sp, -SZREG | |
| 34 | REG_S s0, (sp) | |
| 35 | ||
| 36 | move s0, a0 | |
| a334319f UD |
37 | move a0, a1 /* shift arg1 - arg7. */ |
| 38 | move a1, a2 | |
| 39 | move a2, a3 | |
| 40 | move a3, a4 | |
| 41 | move a4, a5 | |
| 42 | move a5, a6 | |
| 43 | move a6, a7 | |
| 0ecb606c | 44 | |
| 2c923c36 | 45 | move v0, s0 /* Syscall number -> v0 */ |
| a334319f | 46 | syscall /* Do the system call. */ |
| 2c923c36 AJ |
47 | |
| 48 | REG_L s0, (sp) | |
| 49 | PTR_ADDIU sp, SZREG | |
| a334319f | 50 | bne a3, zero, L(error) |
| 0ecb606c | 51 | |
| a334319f | 52 | ret |
| 0ecb606c | 53 | |
| a334319f | 54 | L(error): |
| 2c923c36 AJ |
55 | SETUP_GP64 (a0, syscall) |
| 56 | PTR_LA t9, __syscall_error | |
| 57 | RESTORE_GP64 | |
| a334319f | 58 | jr t9 |
| 0ecb606c | 59 | |
| 2c923c36 | 60 | END (syscall) |