libsyscall/wrappers/varargs_wrappers.s

   1 /*
   2  * Copyright (c) 2011-2013 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_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. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #ifdef __arm64__
  25
  26 #include "../custom/SYS.h"
  27 #include <mach/arm64/asm.h>
  28
  29 /*
  30  * Stubs are to handle the ARM64 ABI for variadic functions'
  31  * not matching the ABI used by the system call handler.
  32  */
  33
  34 /*
  35  *      sem_t* sem_open(const char *name, int oflag, ...);
  36  *      sem_t* __sem_open(const char *name, int oflag, int mode, int value);
  37  */
  38 MI_ENTRY_POINT(_sem_open)
  39         PUSH_FRAME
  40         ldp     x2, x3, [fp, #16]
  41         MI_CALL_EXTERNAL(___sem_open)
  42         POP_FRAME
  43         ret
  44
  45 /*
  46  *      int open(const char *name, int oflag, ...);
  47  *      int __open(const char *name, int oflag, int mode, int value);
  48  */
  49 MI_ENTRY_POINT(_open)
  50         PUSH_FRAME
  51         ldr     x2, [fp, #16]
  52         MI_CALL_EXTERNAL(___open)
  53         POP_FRAME
  54         ret
  55
  56 /*
  57  *      int open_nocancel(const char *name, int oflag, ...);
  58  *      int __open_nocancel(const char *name, int oflag, int mode);
  59  */
  60 MI_ENTRY_POINT(_open$NOCANCEL)
  61         PUSH_FRAME
  62         ldr     x2, [fp, #16]
  63         MI_CALL_EXTERNAL(___open_nocancel)
  64         POP_FRAME
  65         ret
  66
  67 /*
  68  *      int openat(int fd,const char *name, int oflag, ...);
  69  *      int __openat(int fd, const char *name, int oflag, int mode, int value);
  70  */
  71 MI_ENTRY_POINT(_openat)
  72         PUSH_FRAME
  73         ldr     x3, [fp, #16]
  74         MI_CALL_EXTERNAL(___openat)
  75         POP_FRAME
  76         ret
  77
  78 /*
  79  *      int openat_nocancel(int fd, const char *name, int oflag, ...);
  80  *      int __openat_nocancel(int fd, const char *name, int oflag, int mode);
  81  */
  82 MI_ENTRY_POINT(_openat$NOCANCEL)
  83         PUSH_FRAME
  84         ldr     x3, [fp, #16]
  85         MI_CALL_EXTERNAL(___openat_nocancel)
  86         POP_FRAME
  87         ret
  88
  89 /*
  90  * int shm_open(const char *, int, ...);
  91  * int __shm_open(const char*, int oflag, int mode);
  92  */
  93 MI_ENTRY_POINT(_shm_open)
  94         PUSH_FRAME
  95         ldr x2, [fp, #16]
  96         MI_CALL_EXTERNAL(___shm_open)
  97         POP_FRAME
  98         ret
  99
 100 /*
 101  * int msgsys(int, ...);
 102  * int __msgsys(int which, int a2, int a3, int a4, int a5);
 103  */
 104 MI_ENTRY_POINT(_msgsys)
 105         PUSH_FRAME
 106         ldp x1, x2, [fp, #16]
 107         ldp x3, x4, [fp, #32]
 108         MI_CALL_EXTERNAL(___msgsys)
 109         POP_FRAME
 110         ret
 111
 112 /*
 113  * int semsys(int, ...);
 114  * int __semsys(int which, int a2, int a3, int a4, int a5);
 115  */
 116 MI_ENTRY_POINT(_semsys)
 117         PUSH_FRAME
 118         ldp x1, x2, [fp, #16]
 119         ldp x3, x4, [fp, #32]
 120         MI_CALL_EXTERNAL(___semsys)
 121         POP_FRAME
 122         ret
 123
 124 /*
 125  * int  semctl(int, int, int, ...);
 126  * int __semctl(int semid, int semnum, int cmd, semun_t arg);
 127  */
 128  MI_ENTRY_POINT(_semctl)
 129         PUSH_FRAME
 130         ldr x3, [fp, #16]
 131         MI_CALL_EXTERNAL(___semctl)
 132         POP_FRAME
 133         ret
 134
 135 /*
 136  * int  shmsys(int, ...);
 137  * int __shmsys(int which, int a2, int a3, int a4);
 138  */
 139  MI_ENTRY_POINT(_shmsys)
 140         PUSH_FRAME
 141         ldp x1, x2, [fp, #16]
 142         ldr x3, [fp, #32]
 143         MI_CALL_EXTERNAL(___shmsys)
 144         POP_FRAME
 145         ret
 146
 147 #endif /* defined(__arm64__) */