bcopyinout.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: bcopyinout.S,v 1.11 2003/10/13 21:22:40 scw Exp $      */
    2 
    3 /*-
    4  * Copyright (c) 2002 Wasabi Systems, Inc.
    5  * All rights reserved.
    6  *
    7  * Written by Allen Briggs for Wasabi Systems, Inc.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 3. All advertising materials mentioning features or use of this software
   18  *    must display the following acknowledgement:
   19  *      This product includes software developed for the NetBSD Project by
   20  *      Wasabi Systems, Inc.
   21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
   22  *    or promote products derived from this software without specific prior
   23  *    written permission.
   24  *
   25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
   26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
   29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   35  * POSSIBILITY OF SUCH DAMAGE.
   36  */
   37 
   38 
   39 #include "assym.inc"
   40 
   41 #include <machine/asm.h>
   42 #include <sys/errno.h>
   43 
   44 .L_arm_memcpy:
   45         .word   _C_LABEL(_arm_memcpy)
   46 .L_min_memcpy_size:
   47         .word   _C_LABEL(_min_memcpy_size)
   48 
   49 __FBSDID("$FreeBSD$");
   50 #include <arm/arm/bcopyinout_xscale.S>
   51 
   52 /*
   53  * int badaddr_read_1(const uint8_t *src, uint8_t *dest)
   54  *
   55  * Copies a single 8-bit value from src to dest, returning 0 on success,
   56  * else EFAULT if a page fault occurred.
   57  */
   58 ENTRY(badaddr_read_1)
   59         GET_PCB(r2)
   60         ldr     r2, [r2]
   61 
   62         ldr     ip, [r2, #PCB_ONFAULT]
   63         adr     r3, 1f
   64         str     r3, [r2, #PCB_ONFAULT]
   65         nop
   66         nop
   67         nop
   68         ldrb    r3, [r0]
   69         nop
   70         nop
   71         nop
   72         strb    r3, [r1]
   73         mov     r0, #0          /* No fault */
   74 1:      str     ip, [r2, #PCB_ONFAULT]
   75         RET
   76 END(badaddr_read_1)
   77 
   78 /*
   79  * int badaddr_read_2(const uint16_t *src, uint16_t *dest)
   80  *
   81  * Copies a single 16-bit value from src to dest, returning 0 on success,
   82  * else EFAULT if a page fault occurred.
   83  */
   84 ENTRY(badaddr_read_2)
   85         GET_PCB(r2)
   86         ldr     r2, [r2]
   87 
   88         ldr     ip, [r2, #PCB_ONFAULT]
   89         adr     r3, 1f
   90         str     r3, [r2, #PCB_ONFAULT]
   91         nop
   92         nop
   93         nop
   94         ldrh    r3, [r0]
   95         nop
   96         nop
   97         nop
   98         strh    r3, [r1]
   99         mov     r0, #0          /* No fault */
  100 1:      str     ip, [r2, #PCB_ONFAULT]
  101         RET
  102 END(badaddr_read_2)
  103 
  104 /*
  105  * int badaddr_read_4(const uint32_t *src, uint32_t *dest)
  106  *
  107  * Copies a single 32-bit value from src to dest, returning 0 on success,
  108  * else EFAULT if a page fault occurred.
  109  */
  110 ENTRY(badaddr_read_4)
  111         GET_PCB(r2)
  112         ldr     r2, [r2]
  113 
  114         ldr     ip, [r2, #PCB_ONFAULT]
  115         adr     r3, 1f
  116         str     r3, [r2, #PCB_ONFAULT]
  117         nop
  118         nop
  119         nop
  120         ldr     r3, [r0]
  121         nop
  122         nop
  123         nop
  124         str     r3, [r1]
  125         mov     r0, #0          /* No fault */
  126 1:      str     ip, [r2, #PCB_ONFAULT]
  127         RET
  128 END(badaddr_read_4)
  129

Cache object: 6bbb004400d2860e9ede5b9f4ae1a9f1

[ 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/bcopyinout.S

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