UefiCpuPkg/CpuIo2Dxe/X64/IoFifo.nasm

   1 ;------------------------------------------------------------------------------
   2 ;
   3 ; Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
   4 ;
   5 ; This program and the accompanying materials are licensed and made available
   6 ; under the terms and conditions of the BSD License which accompanies this
   7 ; distribution.  The full text of the license may be found at
   8 ; http://opensource.org/licenses/bsd-license.php.
   9 ;
  10 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12 ;
  13 ;------------------------------------------------------------------------------
  14
  15     DEFAULT REL
  16     SECTION .text
  17
  18 ;------------------------------------------------------------------------------
  19 ;  VOID
  20 ;  EFIAPI
  21 ;  IoReadFifo8 (
  22 ;    IN UINTN                  Port,              // rcx
  23 ;    IN UINTN                  Size,              // rdx
  24 ;    IN VOID                   *Buffer            // r8
  25 ;    );
  26 ;------------------------------------------------------------------------------
  27 global ASM_PFX(IoReadFifo8)
  28 ASM_PFX(IoReadFifo8):
  29     cld
  30     xchg    rcx, rdx
  31     xchg    rdi, r8             ; rdi: buffer address; r8: save rdi
  32 rep insb
  33     mov     rdi, r8             ; restore rdi
  34     ret
  35
  36 ;------------------------------------------------------------------------------
  37 ;  VOID
  38 ;  EFIAPI
  39 ;  IoReadFifo16 (
  40 ;    IN UINTN                  Port,              // rcx
  41 ;    IN UINTN                  Size,              // rdx
  42 ;    IN VOID                   *Buffer            // r8
  43 ;    );
  44 ;------------------------------------------------------------------------------
  45 global ASM_PFX(IoReadFifo16)
  46 ASM_PFX(IoReadFifo16):
  47     cld
  48     xchg    rcx, rdx
  49     xchg    rdi, r8             ; rdi: buffer address; r8: save rdi
  50 rep insw
  51     mov     rdi, r8             ; restore rdi
  52     ret
  53
  54 ;------------------------------------------------------------------------------
  55 ;  VOID
  56 ;  EFIAPI
  57 ;  IoReadFifo32 (
  58 ;    IN UINTN                  Port,              // rcx
  59 ;    IN UINTN                  Size,              // rdx
  60 ;    IN VOID                   *Buffer            // r8
  61 ;    );
  62 ;------------------------------------------------------------------------------
  63 global ASM_PFX(IoReadFifo32)
  64 ASM_PFX(IoReadFifo32):
  65     cld
  66     xchg    rcx, rdx
  67     xchg    rdi, r8             ; rdi: buffer address; r8: save rdi
  68 rep insd
  69     mov     rdi, r8             ; restore rdi
  70     ret
  71
  72 ;------------------------------------------------------------------------------
  73 ;  VOID
  74 ;  EFIAPI
  75 ;  IoWriteFifo8 (
  76 ;    IN UINTN                  Port,              // rcx
  77 ;    IN UINTN                  Size,              // rdx
  78 ;    IN VOID                   *Buffer            // r8
  79 ;    );
  80 ;------------------------------------------------------------------------------
  81 global ASM_PFX(IoWriteFifo8)
  82 ASM_PFX(IoWriteFifo8):
  83     cld
  84     xchg    rcx, rdx
  85     xchg    rsi, r8             ; rsi: buffer address; r8: save rsi
  86 rep outsb
  87     mov     rsi, r8             ; restore rsi
  88     ret
  89
  90 ;------------------------------------------------------------------------------
  91 ;  VOID
  92 ;  EFIAPI
  93 ;  IoWriteFifo16 (
  94 ;    IN UINTN                  Port,              // rcx
  95 ;    IN UINTN                  Size,              // rdx
  96 ;    IN VOID                   *Buffer            // r8
  97 ;    );
  98 ;------------------------------------------------------------------------------
  99 global ASM_PFX(IoWriteFifo16)
 100 ASM_PFX(IoWriteFifo16):
 101     cld
 102     xchg    rcx, rdx
 103     xchg    rsi, r8             ; rsi: buffer address; r8: save rsi
 104 rep outsw
 105     mov     rsi, r8             ; restore rsi
 106     ret
 107
 108 ;------------------------------------------------------------------------------
 109 ;  VOID
 110 ;  EFIAPI
 111 ;  IoWriteFifo32 (
 112 ;    IN UINTN                  Port,              // rcx
 113 ;    IN UINTN                  Size,              // rdx
 114 ;    IN VOID                   *Buffer            // r8
 115 ;    );
 116 ;------------------------------------------------------------------------------
 117 global ASM_PFX(IoWriteFifo32)
 118 ASM_PFX(IoWriteFifo32):
 119     cld
 120     xchg    rcx, rdx
 121     xchg    rsi, r8             ; rsi: buffer address; r8: save rsi
 122 rep outsd
 123     mov     rsi, r8             ; restore rsi
 124     ret
 125