bcopy_page.S

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*      $NetBSD: bcopy_page.S,v 1.7 2003/10/13 21:03:13 scw Exp $       */
    2 
    3 /*-
    4  * Copyright (c) 1995 Scott Stevens
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. All advertising materials mentioning features or use of this software
   16  *    must display the following acknowledgement:
   17  *      This product includes software developed by Scott Stevens.
   18  * 4. The name of the author may not be used to endorse or promote products
   19  *    derived from this software without specific prior written permission.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   31  *
   32  * RiscBSD kernel project
   33  *
   34  * bcopy_page.S
   35  *
   36  * page optimised bcopy and bzero routines
   37  *
   38  * Created      : 08/04/95
   39  */
   40 
   41 #include <machine/asm.h>
   42 
   43 __FBSDID("$FreeBSD$");
   44 
   45 #include "assym.inc"
   46 
   47 
   48 /*
   49  * armv5e version of bcopy_page
   50  */
   51 ENTRY(bcopy_page)
   52         pld     [r0]
   53         stmfd   sp!, {r4, r5}
   54         _SAVE({r4, r5})
   55         mov     ip, #32
   56         ldr     r2, [r0], #0x04         /* 0x00 */
   57         ldr     r3, [r0], #0x04         /* 0x04 */
   58 1:      pld     [r0, #0x18]             /* Prefetch 0x20 */
   59         ldr     r4, [r0], #0x04         /* 0x08 */
   60         ldr     r5, [r0], #0x04         /* 0x0c */
   61         strd    r2, [r1], #0x08
   62         ldr     r2, [r0], #0x04         /* 0x10 */
   63         ldr     r3, [r0], #0x04         /* 0x14 */
   64         strd    r4, [r1], #0x08
   65         ldr     r4, [r0], #0x04         /* 0x18 */
   66         ldr     r5, [r0], #0x04         /* 0x1c */
   67         strd    r2, [r1], #0x08
   68         ldr     r2, [r0], #0x04         /* 0x20 */
   69         ldr     r3, [r0], #0x04         /* 0x24 */
   70         pld     [r0, #0x18]             /* Prefetch 0x40 */
   71         strd    r4, [r1], #0x08
   72         ldr     r4, [r0], #0x04         /* 0x28 */
   73         ldr     r5, [r0], #0x04         /* 0x2c */
   74         strd    r2, [r1], #0x08
   75         ldr     r2, [r0], #0x04         /* 0x30 */
   76         ldr     r3, [r0], #0x04         /* 0x34 */
   77         strd    r4, [r1], #0x08
   78         ldr     r4, [r0], #0x04         /* 0x38 */
   79         ldr     r5, [r0], #0x04         /* 0x3c */
   80         strd    r2, [r1], #0x08
   81         ldr     r2, [r0], #0x04         /* 0x40 */
   82         ldr     r3, [r0], #0x04         /* 0x44 */
   83         pld     [r0, #0x18]             /* Prefetch 0x60 */
   84         strd    r4, [r1], #0x08
   85         ldr     r4, [r0], #0x04         /* 0x48 */
   86         ldr     r5, [r0], #0x04         /* 0x4c */
   87         strd    r2, [r1], #0x08
   88         ldr     r2, [r0], #0x04         /* 0x50 */
   89         ldr     r3, [r0], #0x04         /* 0x54 */
   90         strd    r4, [r1], #0x08
   91         ldr     r4, [r0], #0x04         /* 0x58 */
   92         ldr     r5, [r0], #0x04         /* 0x5c */
   93         strd    r2, [r1], #0x08
   94         ldr     r2, [r0], #0x04         /* 0x60 */
   95         ldr     r3, [r0], #0x04         /* 0x64 */
   96         pld     [r0, #0x18]             /* Prefetch 0x80 */
   97         strd    r4, [r1], #0x08
   98         ldr     r4, [r0], #0x04         /* 0x68 */
   99         ldr     r5, [r0], #0x04         /* 0x6c */
  100         strd    r2, [r1], #0x08
  101         ldr     r2, [r0], #0x04         /* 0x70 */
  102         ldr     r3, [r0], #0x04         /* 0x74 */
  103         strd    r4, [r1], #0x08
  104         ldr     r4, [r0], #0x04         /* 0x78 */
  105         ldr     r5, [r0], #0x04         /* 0x7c */
  106         strd    r2, [r1], #0x08
  107         subs    ip, ip, #0x01
  108         ldrgt   r2, [r0], #0x04         /* 0x80 */
  109         ldrgt   r3, [r0], #0x04         /* 0x84 */
  110         strd    r4, [r1], #0x08
  111         bgt     1b
  112         ldmfd   sp!, {r4, r5}
  113         RET
  114 END(bcopy_page)
  115 
  116 /*
  117  * armv5e version of bzero_page
  118  */
  119 ENTRY(bzero_page)
  120         mov     r1, #PAGE_SIZE
  121         mov     r2, #0
  122         mov     r3, #0
  123 1:      strd    r2, [r0], #8            /* 32 */
  124         strd    r2, [r0], #8
  125         strd    r2, [r0], #8
  126         strd    r2, [r0], #8
  127         strd    r2, [r0], #8            /* 64 */
  128         strd    r2, [r0], #8
  129         strd    r2, [r0], #8
  130         strd    r2, [r0], #8
  131         strd    r2, [r0], #8            /* 96 */
  132         strd    r2, [r0], #8
  133         strd    r2, [r0], #8
  134         strd    r2, [r0], #8
  135         strd    r2, [r0], #8            /* 128 */
  136         strd    r2, [r0], #8
  137         strd    r2, [r0], #8
  138         strd    r2, [r0], #8
  139         subs    r1, r1, #128
  140         bne     1b
  141         RET
  142 END(bzero_page)

Cache object: 885db1956a3c61b7a1254be142bc181b

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/arm/arm/bcopy_page.S

FreeBSD/Linux Kernel Cross Reference
sys/arm/arm/bcopy_page.S