1 /* $NetBSD: SYS.h,v 1.8 2002/01/14 00:55:55 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1994, 1995 Carnegie-Mellon University. 5 * All rights reserved. 6 * 7 * Author: Chris G. Demetriou 8 * 9 * Permission to use, copy, modify and distribute this software and 10 * its documentation is hereby granted, provided that both the copyright 11 * notice and this permission notice appear in all copies of the 12 * software, derivative works or modified versions, and any portions 13 * thereof, and that both notices appear in supporting documentation. 14 * 15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 16 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 17 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 18 * 19 * Carnegie Mellon requests users of this software to return to 20 * 21 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 22 * School of Computer Science 23 * Carnegie Mellon University 24 * Pittsburgh PA 15213-3890 25 * 26 * any improvements or extensions that they make and grant Carnegie the 27 * rights to redistribute these changes. 28 */ 29 30 #include <machine/asm.h> 31 #include <sys/syscall.h> 32 33 34 #define CALLSYS_ERROR(name) \ 35 CALLSYS_NOERROR(name); \ 36 br gp, LLABEL(name,0); \ 37 LLABEL(name,0): \ 38 LDGP(gp); \ 39 beq a3, LLABEL(name,1); \ 40 jmp zero, __cerror; \ 41 LLABEL(name,1): 42 43 44 #define SYSCALL(name) \ 45 LEAF(name,0); /* XXX # of args? */ \ 46 CALLSYS_ERROR(name) 47 48 #define SYSCALL_NOERROR(name) \ 49 LEAF(name,0); /* XXX # of args? */ \ 50 CALLSYS_NOERROR(name) 51 52 #define PSEUDO(label,name) \ 53 LEAF(label,0); /* XXX # of args? */ \ 54 CALLSYS_ERROR(name); \ 55 RET; \ 56 END(label); 57 58 #define PSEUDO_NOERROR(label,name) \ 59 LEAF(label,0); /* XXX # of args? */ \ 60 CALLSYS_NOERROR(name); \ 61 RET; \ 62 END(label); 63 64 #define RSYSCALL(name) \ 65 SYSCALL(name); \ 66 RET; \ 67 END(name) 68 69 #define RSYSCALL_NOERROR(name) \ 70 SYSCALL_NOERROR(name); \ 71 RET; \ 72 END(name) 73 74 #define WSYSCALL(weak,strong) \ 75 WEAK_ALIAS(weak,strong); \ 76 PSEUDO(strong,weak) 77