1/* 2 * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* 29 * @OSF_COPYRIGHT@ 30 */ 31/* 32 * Mach Operating System 33 * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University 34 * All Rights Reserved. 35 * 36 * Permission to use, copy, modify and distribute this software and its 37 * documentation is hereby granted, provided that both the copyright 38 * notice and this permission notice appear in all copies of the 39 * software, derivative works or modified versions, and any portions 40 * thereof, and that both notices appear in supporting documentation. 41 * 42 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 43 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 44 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 45 * 46 * Carnegie Mellon requests users of this software to return to 47 * 48 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 49 * School of Computer Science 50 * Carnegie Mellon University 51 * Pittsburgh PA 15213-3890 52 * 53 * any improvements or extensions that they make and grant Carnegie Mellon 54 * the rights to redistribute these changes. 55 */ 56 57#ifdef PRIVATE 58 59#ifndef _MACH_ARM_SYSCALL_SW_H_ 60#define _MACH_ARM_SYSCALL_SW_H_ 61 62#define mach_syscall0to4_int(num) \ 63 mov r12, #(num) ; \ 64 swi #0x80 ; \ 65 bx lr 66 67#define mach_syscall5_int(num) \ 68 mov r12, sp ; \ 69 stmfd sp!,{r4-r5} ; \ 70 ldr r4, [r12] ; \ 71 mov r12, #(num) ; \ 72 swi #0x80 ; \ 73 ldmfd sp!,{r4-r5} ; \ 74 bx lr 75 76#define mach_syscall_large_int(num, save_regs, arg_regs)\ 77 mov r12, sp ; \ 78 stmfd sp!,{save_regs} ; \ 79 ldmia r12,{arg_regs} ; \ 80 mov r12, #(num) ; \ 81 swi #0x80 ; \ 82 ldmfd sp!,{save_regs} ; \ 83 bx lr 84 85#define COMMA , 86 87#define _mach_sys_0(num) mach_syscall0to4_int(num) 88#define _mach_sys_1(num) mach_syscall0to4_int(num) 89#define _mach_sys_2(num) mach_syscall0to4_int(num) 90#define _mach_sys_3(num) mach_syscall0to4_int(num) 91#define _mach_sys_4(num) mach_syscall0to4_int(num) 92#define _mach_sys_5(num) mach_syscall5_int(num) 93#define _mach_sys_6(num) mach_syscall_large_int(num, r4-r5, r4-r5) 94#define _mach_sys_7(num) mach_syscall_large_int(num, r4-r6 COMMA r8, r4-r6) 95#define _mach_sys_8(num) mach_syscall_large_int(num, r4-r6 COMMA r8, r4-r6 COMMA r8) 96#define _mach_sys_9(num) mach_syscall_large_int(num, r4-r6 COMMA r8, r4-r6 COMMA r8) 97 98/* select the appropriate syscall code, based on the number of arguments */ 99#define _mach_sys(num, args) _mach_sys_##args(num) 100 101#define kernel_trap(trap_name, trap_number, nargs) \ 102 .globl _##trap_name ; \ 103 .align 2 ; \ 104 .text ; \ 105_##trap_name: ; \ 106 _mach_sys(trap_number, nargs) 107 108#endif /* _MACH_ARM_SYSCALL_SW_H_ */ 109 110#endif /* PRIVATE */ 111