MdePkg/Library/BaseLib/Ipf/AccessDbr.s

   1 /// @file
   2 ///  IPF specific Debug Breakpoint Registers accessing functions
   3 ///
   4 /// Copyright (c) 2006, Intel Corporation
   5 /// All rights reserved. This program and the accompanying materials
   6 /// are licensed and made available under the terms and conditions of the BSD License
   7 /// which accompanies this 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 /// Module Name: AccessDbr.s
  14 ///
  15 ///
  16
  17 //---------------------------------------------------------------------------------
  18 //++
  19 // AsmReadDbr
  20 //
  21 // This routine is used to Reads the current value of Data Breakpoint Register (DBR).
  22 //
  23 // Arguments :
  24 //
  25 // On Entry : The 8-bit DBR index to read.
  26 //
  27 // Return Value: The current value of DBR by Index.
  28 //
  29 //--
  30 //----------------------------------------------------------------------------------
  31 .text
  32 .type   AsmReadDbr, @function
  33 .proc   AsmReadDbr
  34 .regstk 1, 0, 0, 0
  35
  36 AsmReadDbr::
  37         mov             r8 = dbr[in0];;
  38         br.ret.dpnt     b0;;
  39 .endp   AsmReadDbr
  40
  41 //---------------------------------------------------------------------------------
  42 //++
  43 // AsmWriteDbr
  44 //
  45 // This routine is used to write the current value to Data Breakpoint Register (DBR).
  46 //
  47 // Arguments :
  48 //
  49 // On Entry : The 8-bit DBR index to read.
  50 //            The value should be written to DBR
  51 //
  52 // Return Value: The value written to DBR.
  53 //
  54 //--
  55 //----------------------------------------------------------------------------------
  56 .text
  57 .type   AsmWriteDbr, @function
  58 .proc   AsmWriteDbr
  59 .regstk 2, 0, 0, 0
  60
  61 AsmWriteDbr::
  62         mov             dbr[in0] = in1
  63         mov             r8 = in1;;
  64         srlz.d;;
  65         br.ret.dpnt     b0;;
  66 .endp   AsmWriteDbr
  67
  68
  69 //---------------------------------------------------------------------------------
  70 //++
  71 // AsmReadIbr
  72 //
  73 // This routine is used to Reads the current value of Instruction Breakpoint Register (IBR).
  74 //
  75 // Arguments :
  76 //
  77 // On Entry : The 8-bit IBR index.
  78 //
  79 // Return Value: The current value of IBR by Index.
  80 //
  81 //--
  82 //----------------------------------------------------------------------------------
  83 .text
  84 .type   AsmReadIbr, @function
  85 .proc   AsmReadIbr
  86 .regstk 1, 0, 0, 0
  87
  88 AsmReadIbr::
  89         mov             r8 = ibr[in0];;
  90         br.ret.dpnt     b0;;
  91 .endp   AsmReadIbr
  92
  93 //---------------------------------------------------------------------------------
  94 //++
  95 // AsmWriteIbr
  96 //
  97 // This routine is used to write the current value to Instruction Breakpoint Register (IBR).
  98 //
  99 // Arguments :
 100 //
 101 // On Entry : The 8-bit IBR index.
 102 //            The value should be written to IBR
 103 //
 104 // Return Value: The value written to IBR.
 105 //
 106 //--
 107 //----------------------------------------------------------------------------------
 108 .text
 109 .type   AsmWriteIbr, @function
 110 .proc   AsmWriteIbr
 111 .regstk 2, 0, 0, 0
 112
 113 AsmWriteIbr::
 114         mov             ibr[in0] = in1
 115         mov             r8 = in1;;
 116         srlz.i;;
 117         br.ret.dpnt     b0;;
 118 .endp   AsmWriteIbr