1/* 2 * Copyright (c) 1999-2007 Apple 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/* Copyright (c) 1992 NeXT Computer, Inc. All rights reserved. */ 29 30#include "SYS.h" 31 32#if defined(__i386__) 33 34LEAF(___syscall, 0) 35 popl %ecx // ret addr 36 popl %eax // syscall number 37 pushl %ecx 38 UNIX_SYSCALL_TRAP 39 movl (%esp),%edx // add one element to stack so 40 pushl %ecx // caller "pop" will work 41 jnb 2f 42 BRANCH_EXTERN(tramp_cerror) 432: 44END(___syscall) 45 46#elif defined(__x86_64__) 47 48// For x86-64, the kernel slides the argument list for us. 49// The number of arguments here is variable, but our macros ignore 50// that value anyway. 51__SYSCALL(___syscall, syscall, 0); 52 53#else 54#error Unsupported architecture 55#endif 56