1 /* $OpenBSD: SYS.h,v 1.15 2006/01/05 22:13:55 kettenis Exp $ */ 2 3 /* 4 * Copyright (c) 1998-2002 Michael Shalayeff 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF MIND 22 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/syscall.h> 29 #include <machine/asm.h> 30 #undef _LOCORE 31 #define _LOCORE 32 #include <machine/frame.h> 33 #include <machine/vmparam.h> 34 #undef _LOCORE 35 36 #define SYSENTRY(x) !\ 37 LEAF_ENTRY(__CONCAT(_thread_sys_,x)) !\ 38 .weak x ! .set x, __CONCAT(_thread_sys_,x) 39 #define SYSEXIT(x) !\ 40 EXIT(__CONCAT(_thread_sys_,x)) 41 42 #define SYSCALL(x) !\ 43 stw rp, HPPA_FRAME_ERP(sr0,sp) !\ 44 ldil L%SYSCALLGATE, r1 !\ 45 ble 4(sr7, r1) !\ 46 ldi __CONCAT(SYS_,x), t1 !\ 47 .import __cerror, code !\ 48 comb,<> r0, t1, __cerror !\ 49 ldw HPPA_FRAME_ERP(sr0,sp), rp 50 51 #define PSEUDO(x,y) !\ 52 SYSENTRY(x) !\ 53 SYSCALL(y) !\ 54 bv r0(rp) !\ 55 nop !\ 56 SYSEXIT(x) 57 58 #define PSEUDO_NOERROR(x,y) !\ 59 SYSENTRY(x) !\ 60 stw rp, HPPA_FRAME_ERP(sr0,sp) !\ 61 ldil L%SYSCALLGATE, r1 !\ 62 ble 4(sr7, r1) !\ 63 ldi __CONCAT(SYS_,y), t1 !\ 64 ldw HPPA_FRAME_ERP(sr0,sp), rp !\ 65 bv r0(rp) !\ 66 nop !\ 67 SYSEXIT(x) 68 69 #define RSYSCALL(x) PSEUDO(x,x) 70 71