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 1.5 2011/04/04 12:42:39 guenther 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 #ifdef __STDC__ 42 # define __ENTRY(p,x) ENTRY(p ## x) 43 44 # define __DO_SYSCALL(x) \ 45 li v0,SYS_ ## x; \ 46 syscall 47 48 # define __LEAF2(p,x,sz) LEAF(p ## x, sz) \ 49 WEAK_ALIAS(x, p ## x); 50 51 # define __END2(p,x) END(p ## x) 52 53 # define __CLABEL2(p,x) _C_LABEL(p ## x) 54 #else 55 # define __ENTRY(p,x) ENTRY(p/**/x) 56 57 # define __DO_SYSCALL(x) \ 58 li v0,SYS_/**/x; \ 59 syscall 60 61 # define __LEAF2(p,x,sz) LEAF(p/**/x, sz) \ 62 WEAK_ALIAS(x, p/**/x); 63 64 # define __END2(p,x) END(p/**/x) 65 66 # define __CLABEL2(p,x) _C_LABEL(p/**/x) 67 #endif 68 69 #define __PSEUDO_NOERROR(p,x,y) \ 70 __LEAF2(p,x, 0); \ 71 __DO_SYSCALL(y); \ 72 j ra; \ 73 __END2(p,x) 74 75 #define __PSEUDO(p,x,y) \ 76 __LEAF2(p,x,32); \ 77 PTR_SUBU sp,32; \ 78 SETUP_GP64(16,__CLABEL2(p,x)); \ 79 __DO_SYSCALL(y); \ 80 bne a3,zero,err; \ 81 RESTORE_GP64; \ 82 PTR_ADDU sp,32; \ 83 j ra; \ 84 err: LA t9,CERROR; \ 85 RESTORE_GP64; \ 86 PTR_ADDU sp,32; \ 87 jr t9; \ 88 __END2(p,x) 89 90 91 #define RSYSCALL(x) __PSEUDO(_thread_sys_,x,x) 92 #define PSEUDO(x,y) __PSEUDO(_thread_sys_,x,y) 93 #define PSEUDO_NOERROR(x,y) __PSEUDO_NOERROR(_thread_sys_,x,y) 94 95 #define SYSLEAF(x, sz) __LEAF2(_thread_sys_,x, sz) 96 #define SYSEND(x) __END2(_thread_sys_,x) 97 98