| /* |
| |
| Copyright (c) 2005, 2009 Red Hat Incorporated. |
| All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions are met: |
| |
| Redistributions of source code must retain the above copyright |
| notice, this list of conditions and the following disclaimer. |
| |
| Redistributions in binary form must reproduce the above copyright |
| notice, this list of conditions and the following disclaimer in the |
| documentation and/or other materials provided with the distribution. |
| |
| The name of Red Hat Incorporated may not be used to endorse |
| or promote products derived from this software without specific |
| prior written permission. |
| |
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| DISCLAIMED. IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY |
| DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| */ |
| |
| #include "syscall.h" |
| |
| /* This mixture of C pre-processor macros and assembler |
| macros is to get around the fact that the RX assembler |
| does not support a line separator character. */ |
| |
| #define SYS__exit SYS_exit |
| |
| .macro syscall_body number |
| /* We use interrupt 255 as a system call, |
| with the call number in r5. */ |
| mov # \number, r5 |
| int # 255 |
| rts |
| .endm |
| |
| |
| .macro do_syscall name number |
| __\name: |
| .global __\name |
| _\name: |
| .weak _\name |
| syscall_body \number |
| .endm |
| |
| |
| #define S(name) do_syscall name SYS_##name |
| #define SYSCALL(number) syscall_body number |