arch/powerpc/cpu/mpc5xxx/io.S

   1 /*
   2  *  Copyright (C) 1998  Dan Malek <dmalek@jlc.net>
   3  *  Copyright (C) 1999  Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
   4  *  Copyright (C) 2001  Sysgo Real-Time Solutions, GmbH <www.elinos.com>
   5  *                      Andreas Heppel <aheppel@sysgo.de>
   6  *  Copyright (C) 2003  Wolfgang Denk <wd@denx.de>
   7  *
   8  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11 #include <config.h>
  12 #include <ppc_asm.tmpl>
  13
  14 /* ------------------------------------------------------------------------------- */
  15 /*  Function:     in8 */
  16 /*  Description:  Input 8 bits */
  17 /* ------------------------------------------------------------------------------- */
  18         .globl  in8
  19 in8:
  20         lbz     r3,0(r3)
  21         sync
  22         blr
  23
  24 /* ------------------------------------------------------------------------------- */
  25 /*  Function:     in16 */
  26 /*  Description:  Input 16 bits */
  27 /* ------------------------------------------------------------------------------- */
  28         .globl  in16
  29 in16:
  30         lhz     r3,0(r3)
  31         sync
  32         blr
  33
  34 /* ------------------------------------------------------------------------------- */
  35 /*  Function:     in16r */
  36 /*  Description:  Input 16 bits and byte reverse */
  37 /* ------------------------------------------------------------------------------- */
  38         .globl  in16r
  39 in16r:
  40         lhbrx   r3,0,r3
  41         sync
  42         blr
  43
  44 /* ------------------------------------------------------------------------------- */
  45 /*  Function:     in32 */
  46 /*  Description:  Input 32 bits */
  47 /* ------------------------------------------------------------------------------- */
  48         .globl  in32
  49 in32:
  50         lwz     3,0(3)
  51         sync
  52         blr
  53
  54 /* ------------------------------------------------------------------------------- */
  55 /*  Function:     in32r */
  56 /*  Description:  Input 32 bits and byte reverse */
  57 /* ------------------------------------------------------------------------------- */
  58     .globl  in32r
  59 in32r:
  60         lwbrx   r3,0,r3
  61         sync
  62         blr
  63
  64 /* ------------------------------------------------------------------------------- */
  65 /*  Function:     out8 */
  66 /*  Description:  Output 8 bits */
  67 /* ------------------------------------------------------------------------------- */
  68         .globl  out8
  69 out8:
  70         stb     r4,0(r3)
  71         sync
  72         blr
  73
  74 /* ------------------------------------------------------------------------------- */
  75 /*  Function:     out16 */
  76 /*  Description:  Output 16 bits */
  77 /* ------------------------------------------------------------------------------- */
  78         .globl  out16
  79 out16:
  80         sth     r4,0(r3)
  81         sync
  82         blr
  83
  84 /* ------------------------------------------------------------------------------- */
  85 /*  Function:     out16r */
  86 /*  Description:  Byte reverse and output 16 bits */
  87 /* ------------------------------------------------------------------------------- */
  88         .globl  out16r
  89 out16r:
  90         sthbrx  r4,0,r3
  91         sync
  92         blr
  93
  94 /* ------------------------------------------------------------------------------- */
  95 /*  Function:     out32 */
  96 /*  Description:  Output 32 bits */
  97 /* ------------------------------------------------------------------------------- */
  98         .globl  out32
  99 out32:
 100         stw     r4,0(r3)
 101         sync
 102         blr
 103
 104 /* ------------------------------------------------------------------------------- */
 105 /*  Function:     out32r */
 106 /*  Description:  Byte reverse and output 32 bits */
 107 /* ------------------------------------------------------------------------------- */
 108         .globl  out32r
 109 out32r:
 110         stwbrx  r4,0,r3
 111         sync
 112         blr