| | 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 | |
| | 34 | LEAF(___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(cerror) |
| | 43 | 2: |
| | 44 | END(___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 |
projects / apple / xnu.git / blame_incremental