1 /*- 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Ralph Campbell. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $OpenBSD: SYS.h,v 1.6 2014/06/04 20:13:49 matthew Exp $ 33 */ 34 35 #include <sys/syscall.h> 36 #include <machine/asm.h> 37 38 #define CERROR _C_LABEL(__cerror) 39 #define _CERROR _C_LABEL(___cerror) 40 41 # define __ENTRY(p,x) ENTRY(p ## x) 42 43 # define __DO_SYSCALL(x) \ 44 li v0,SYS_ ## x; \ 45 syscall 46 47 # define __LEAF2(p,x,sz) LEAF(p ## x, sz) \ 48 WEAK_ALIAS(x, p ## x); 49 50 # define __END2(p,x) END(p ## x) 51 52 # define __CLABEL2(p,x) _C_LABEL(p ## x) 53 54 #define __PSEUDO_NOERROR(p,x,y) \ 55 __LEAF2(p,x, 0); \ 56 __DO_SYSCALL(y); \ 57 j ra; \ 58 __END2(p,x) 59 60 #define __PSEUDO(p,x,y) \ 61 __LEAF2(p,x,32); \ 62 PTR_SUBU sp,32; \ 63 SETUP_GP64(16,__CLABEL2(p,x)); \ 64 __DO_SYSCALL(y); \ 65 bne a3,zero,err; \ 66 RESTORE_GP64; \ 67 PTR_ADDU sp,32; \ 68 j ra; \ 69 err: LA t9,CERROR; \ 70 RESTORE_GP64; \ 71 PTR_ADDU sp,32; \ 72 jr t9; \ 73 __END2(p,x) 74 75 76 #define RSYSCALL(x) __PSEUDO(_thread_sys_,x,x) 77 #define PSEUDO(x,y) __PSEUDO(_thread_sys_,x,y) 78 #define PSEUDO_NOERROR(x,y) __PSEUDO_NOERROR(_thread_sys_,x,y) 79 80 #define SYSLEAF(x, sz) __LEAF2(_thread_sys_,x, sz) 81 #define SYSEND(x) __END2(_thread_sys_,x) 82 83