1 /* $OpenBSD: SYS.h,v 1.5 2011/04/04 12:42:39 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 #include <arm/swi.h> 41 42 #ifdef __STDC__ 43 #define SYSENTRY(x) \ 44 .weak _C_LABEL(x); \ 45 _C_LABEL(x) = _C_LABEL(_thread_sys_ ## x); \ 46 ENTRY(_thread_sys_ ## x) 47 #else /* ! __STDC__ */ 48 #define SYSENTRY(x) \ 49 .weak _C_LABEL(x); \ 50 _C_LABEL(x) = _C_LABEL(_thread_sys_/**/x); \ 51 ENTRY(_thread_sys_/**/x) 52 #endif /* ! __STDC__ */ 53 54 #ifdef __STDC__ 55 #define SYSTRAP(x) \ 56 ldr r12, =SYS_ ## x; \ 57 swi SWI_OS_NETBSD | SYS_ ## x 58 #else 59 #define SYSTRAP(x) \ 60 ldr r12, =SYS_/**/x; \ 61 swi SWI_OS_NETBSD | SYS_/**/x 62 #endif 63 64 #ifdef __ELF__ 65 #define CERROR _C_LABEL(__cerror) 66 #define _CERROR _C_LABEL(___cerror) 67 #define CURBRK _C_LABEL(__curbrk) 68 #else 69 #define CERROR _ASM_LABEL(cerror) 70 #define CURBRK _ASM_LABEL(curbrk) 71 #endif 72 73 #define _SYSCALL_NOERROR(x,y) \ 74 SYSENTRY(x); \ 75 SYSTRAP(y) 76 77 #define _SYSCALL(x, y) \ 78 _SYSCALL_NOERROR(x,y); \ 79 bcs PIC_SYM(CERROR, PLT) 80 81 #define SYSCALL_NOERROR(x) \ 82 _SYSCALL_NOERROR(x,x) 83 84 #define SYSCALL(x) \ 85 _SYSCALL(x,x) 86 87 88 #define PSEUDO_NOERROR(x,y) \ 89 _SYSCALL_NOERROR(x,y); \ 90 mov r15, r14 91 92 #define PSEUDO(x,y) \ 93 _SYSCALL(x,y); \ 94 mov r15, r14 95 96 97 #define RSYSCALL_NOERROR(x) \ 98 PSEUDO_NOERROR(x,x) 99 100 #define RSYSCALL(x) \ 101 PSEUDO(x,x) 102 103 .globl CERROR 104