projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 2d21ac55 A |
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 | ||
| 6d2010ae | 32 | #if defined(__i386__) |
| 2d21ac55 A |
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 | |
| 39236c6e | 42 | BRANCH_EXTERN(tramp_cerror) |
| 2d21ac55 A |
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. | |
| 6d2010ae | 51 | __SYSCALL(___syscall, syscall, 0); |
| 2d21ac55 | 52 | |
| 5ba3f43e A |
53 | #elif defined(__arm__) |
| 54 | ||
| 55 | __SYSCALL(___syscall, syscall, 7) | |
| 56 | ||
| 57 | #elif defined(__arm64__) | |
| 58 | ||
| 59 | /* | |
| 60 | * Ignore nominal number of arguments: just pop from stack and let the kernel | |
| 61 | * interpret. | |
| 62 | */ | |
| 63 | #include <mach/arm64/asm.h> | |
| 64 | MI_ENTRY_POINT(___syscall) | |
| 65 | ldp x1, x2, [sp] | |
| 66 | ldp x3, x4, [sp, #16] | |
| 67 | ldp x5, x6, [sp, #32] | |
| 68 | ldr x7, [sp, #48] | |
| 69 | DO_SYSCALL(SYS_syscall, cerror) | |
| 70 | ret | |
| 2d21ac55 A |
71 | #else |
| 72 | #error Unsupported architecture | |
| 73 | #endif |