1 /*- 2 * Copyright (c) 2014 Andrew Turner 3 * Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com> 4 * All rights reserved. 5 * 6 * Portions of this software were developed by SRI International and the 7 * University of Cambridge Computer Laboratory under DARPA/AFRL contract 8 * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme. 9 * 10 * Portions of this software were developed by the University of Cambridge 11 * Computer Laboratory as part of the CTSRD Project, with support from the 12 * UK Higher Education Innovation Fund (HEIF). 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/syscall.h> 37 #include <machine/asm.h> 38 39 #define _SYSCALL(name) \ 40 li t0, SYS_ ## name; \ 41 ecall 42 43 #ifndef _SYSCALL_BODY 44 #define _SYSCALL_BODY(name) \ 45 _SYSCALL(name); \ 46 bnez t0, 1f; \ 47 ret; \ 48 1: la t1, cerror; \ 49 jr t1 50 #endif 51 52 #define PSEUDO(name) \ 53 ENTRY(__sys_##name); \ 54 WEAK_REFERENCE(__sys_##name, _##name); \ 55 _SYSCALL_BODY(name); \ 56 END(__sys_##name) 57 58 #define RSYSCALL(name) \ 59 ENTRY(__sys_##name); \ 60 WEAK_REFERENCE(__sys_##name, name); \ 61 WEAK_REFERENCE(__sys_##name, _##name); \ 62 _SYSCALL_BODY(name); \ 63 END(__sys_##name) 64