ntoskrnl/ex/powerpc/ioport.s

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS kernel
   4  * FILE:            ntoskrnl/ex/powerpc/ioport.s
   5  * PURPOSE:         FASTCALL Interlocked Functions
   6  * PROGRAMMERS:     Alex Ionescu (alex@relsoft.net)
   7  */
   8
   9 /* INCLUDES ******************************************************************/
  10
  11 #include <ndk/asm.h>
  12
  13 /* GLOBALS *******************************************************************/
  14
  15 .globl READ_REGISTER_UCHAR
  16 .globl READ_REGISTER_USHORT
  17 .globl READ_REGISTER_ULONG
  18 .globl READ_REGISTER_BUFFER_UCHAR
  19 .globl READ_REGISTER_BUFFER_USHORT
  20 .globl READ_REGISTER_BUFFER_ULONG
  21 .globl WRITE_REGISTER_UCHAR
  22 .globl WRITE_REGISTER_USHORT
  23 .globl WRITE_REGISTER_ULONG
  24 .globl WRITE_REGISTER_BUFFER_UCHAR
  25 .globl WRITE_REGISTER_BUFFER_USHORT
  26 .globl WRITE_REGISTER_BUFFER_ULONG
  27
  28 /* FUNCTIONS *****************************************************************/
  29
  30 READ_REGISTER_UCHAR:
  31         /* Return the requested memory location */
  32         sync
  33         eieio
  34         lbz 3,0(3)
  35         blr
  36
  37 READ_REGISTER_USHORT:
  38         /* Return the requested memory location */
  39         sync
  40         eieio
  41         lhz 3,0(3)
  42         blr
  43
  44 READ_REGISTER_ULONG:
  45         /* Return the requested memory location */
  46         sync
  47         eieio
  48         lwz 3,0(3)
  49         blr
  50
  51 READ_REGISTER_BUFFER_UCHAR:
  52 1:
  53         cmpwi 0,5,0
  54         beq 2f
  55
  56         lbz 0,0(4)
  57         stb 0,0(3)
  58
  59         addi 3,3,1
  60         addi 4,4,1
  61         subi 5,5,1
  62         b 1b
  63 2:
  64         eieio
  65         sync
  66         blr
  67
  68 READ_REGISTER_BUFFER_USHORT:
  69 1:
  70         cmpwi 0,5,0
  71         beq 2f
  72
  73         lhz 0,0(4)
  74         sth 0,0(3)
  75
  76         addi 3,3,2
  77         addi 4,4,2
  78         subi 5,5,2
  79         b 1b
  80 2:
  81         eieio
  82         sync
  83         blr
  84
  85 READ_REGISTER_BUFFER_ULONG:
  86 1:
  87         cmpwi 0,5,0
  88         beq 2f
  89
  90         lwz 0,0(4)
  91         stw 0,0(3)
  92
  93         addi 3,3,4
  94         addi 4,4,4
  95         subi 5,5,4
  96         b 1b
  97 2:
  98         eieio
  99         sync
 100         blr
 101
 102 WRITE_REGISTER_UCHAR:
 103         stb 4,0(3)
 104         eieio
 105         sync
 106         blr
 107
 108 WRITE_REGISTER_USHORT:
 109         sth 4,0(3)
 110         eieio
 111         sync
 112         blr
 113
 114 WRITE_REGISTER_ULONG:
 115         stw 4,0(3)
 116         eieio
 117         sync
 118         blr
 119
 120 WRITE_REGISTER_BUFFER_UCHAR:
 121         sync
 122         eieio
 123 1:
 124         cmpwi 0,5,0
 125         beq 2f
 126
 127         lbz 0,0(4)
 128         stb 0,0(3)
 129
 130         addi 3,3,1
 131         addi 4,4,1
 132         subi 5,5,1
 133         b 1b
 134 2:
 135         blr
 136
 137 WRITE_REGISTER_BUFFER_USHORT:
 138         sync
 139         eieio
 140 1:
 141         cmpwi 0,5,0
 142         beq 2f
 143
 144         lhz 0,0(4)
 145         sth 0,0(3)
 146
 147         addi 3,3,2
 148         addi 4,4,2
 149         subi 5,5,2
 150         b 1b
 151 2:
 152         blr
 153
 154 WRITE_REGISTER_BUFFER_ULONG:
 155         sync
 156         eieio
 157 1:
 158         cmpwi 0,5,0
 159         beq 2f
 160
 161         lwz 0,0(4)
 162         stw 0,0(3)
 163
 164         addi 3,3,4
 165         addi 4,4,4
 166         subi 5,5,4
 167         b 1b
 168 2:
 169         blr
 170
 171 /* EOF */