ppc/sys/ppc_gettimeofday.s

   1 /*
   2  * Copyright (c) 1999-2003 Apple Computer, 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 /* Copyright 1998 Apple Computer, Inc. */
  24
  25 #include "SYS.h"
  26
  27 #define __APPLE_API_PRIVATE
  28 #include <machine/cpu_capabilities.h>
  29 #undef  __APPLE_API_PRIVATE
  30
  31 MI_ENTRY_POINT(___commpage_gettimeofday)
  32     ba  _COMM_PAGE_GETTIMEOFDAY
  33
  34
  35 /* This syscall is special cased: the timeval is returned in r3/r4.
  36  * Note also that the "seconds" field of the timeval is a long, so
  37  * it's size is mode dependent.
  38  */
  39 MI_ENTRY_POINT(___ppc_gettimeofday)
  40     mr      r12,r3              // save ptr to timeval
  41     SYSCALL_NONAME(gettimeofday,0)
  42         mr.     r12,r12             // was timeval ptr null?
  43         beq     3f
  44         stg     r3,0(r12)           // "stw" in 32-bit mode, "std" in 64-bit mode
  45         stw     r4,GPR_BYTES(r12)
  46         li      r3,0
  47 3:
  48         blr
  49