1 /* $OpenBSD: SYS.h,v 1.9 2015/04/07 01:27:06 guenther Exp $ */ 2 /* $NetBSD: SYS.h,v 1.8 2003/08/07 16:42:02 agc Exp $ */ 3 4 /*- 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * William Jolitz. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 * from: @(#)SYS.h 5.5 (Berkeley) 5/7/91 36 */ 37 38 #include <machine/asm.h> 39 #include <sys/syscall.h> 40 41 #define SYSENTRY(x) \ 42 .weak _C_LABEL(x); \ 43 _C_LABEL(x) = _C_LABEL(_thread_sys_ ## x); \ 44 ENTRY(_thread_sys_ ## x) 45 #define SYSENTRY_HIDDEN(x) \ 46 ENTRY(_thread_sys_ ## x) 47 48 #define SYSTRAP(x) \ 49 ldr r12, =SYS_ ## x; \ 50 swi 0 51 52 #define CERROR _C_LABEL(__cerror) 53 #define _CERROR _C_LABEL(___cerror) 54 #define CURBRK _C_LABEL(__curbrk) 55 56 #define _SYSCALL_NOERROR(x,y) \ 57 SYSENTRY(x); \ 58 SYSTRAP(y) 59 #define _SYSCALL_HIDDEN_NOERROR(x,y) \ 60 SYSENTRY_HIDDEN(x); \ 61 SYSTRAP(y) 62 63 #define _SYSCALL(x, y) \ 64 _SYSCALL_NOERROR(x,y); \ 65 bcs PIC_SYM(CERROR, PLT) 66 #define _SYSCALL_HIDDEN(x, y) \ 67 _SYSCALL_HIDDEN_NOERROR(x,y); \ 68 bcs PIC_SYM(CERROR, PLT) 69 70 #define SYSCALL_NOERROR(x) \ 71 _SYSCALL_NOERROR(x,x) 72 73 #define SYSCALL(x) \ 74 _SYSCALL(x,x) 75 76 77 #define PSEUDO_NOERROR(x,y) \ 78 _SYSCALL_NOERROR(x,y); \ 79 mov r15, r14 80 81 #define PSEUDO(x,y) \ 82 _SYSCALL(x,y); \ 83 mov r15, r14 84 #define PSEUDO_HIDDEN(x,y) \ 85 _SYSCALL_HIDDEN(x,y); \ 86 mov r15, r14 87 88 89 #define RSYSCALL_NOERROR(x) \ 90 PSEUDO_NOERROR(x,x) 91 92 #define RSYSCALL(x) \ 93 PSEUDO(x,x) 94 #define RSYSCALL_HIDDEN(x) \ 95 PSEUDO_HIDDEN(x,x) 96 97 .globl CERROR 98