EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ipf/AccessDbr.s

   1 /// Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
   2 /// This program and the accompanying materials
   3 /// are licensed and made available under the terms and conditions of the BSD License
   4 /// which accompanies this distribution.  The full text of the license may be found at
   5 /// http://opensource.org/licenses/bsd-license.php
   6 ///
   7 /// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
   8 /// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
   9 ///
  10 /// Module Name: AccessDbr.s
  11 ///
  12 ///
  13 ///  IPF specific Debug Breakpoint Registers accessing functions
  14 ///
  15
  16 //---------------------------------------------------------------------------------
  17 //++
  18 // AsmReadDbr
  19 //
  20 // This routine is used to Reads the current value of Data Breakpoint Register (DBR).
  21 //
  22 // Arguments :
  23 //
  24 // On Entry : The 8-bit DBR index to read.
  25 //
  26 // Return Value: The current value of DBR by Index.
  27 //
  28 //--
  29 //----------------------------------------------------------------------------------
  30 .text
  31 .type   AsmReadDbr, @function
  32 .proc   AsmReadDbr
  33 .regstk 1, 0, 0, 0
  34
  35 AsmReadDbr::
  36         mov             r8 = dbr[in0];;
  37         br.ret.dpnt     b0;;
  38 .endp   AsmReadDbr
  39
  40 //---------------------------------------------------------------------------------
  41 //++
  42 // AsmWriteDbr
  43 //
  44 // This routine is used to write the current value to Data Breakpoint Register (DBR).
  45 //
  46 // Arguments :
  47 //
  48 // On Entry : The 8-bit DBR index to read.
  49 //            The value should be written to DBR
  50 //
  51 // Return Value: The value written to DBR.
  52 //
  53 //--
  54 //----------------------------------------------------------------------------------
  55 .text
  56 .type   AsmWriteDbr, @function
  57 .proc   AsmWriteDbr
  58 .regstk 2, 0, 0, 0
  59
  60 AsmWriteDbr::
  61         mov             dbr[in0] = in1
  62         mov             r8 = in1;;
  63         srlz.d;;
  64         br.ret.dpnt     b0;;
  65 .endp   AsmWriteDbr
  66
  67
  68 //---------------------------------------------------------------------------------
  69 //++
  70 // AsmReadIbr
  71 //
  72 // This routine is used to Reads the current value of Instruction Breakpoint Register (IBR).
  73 //
  74 // Arguments :
  75 //
  76 // On Entry : The 8-bit IBR index.
  77 //
  78 // Return Value: The current value of IBR by Index.
  79 //
  80 //--
  81 //----------------------------------------------------------------------------------
  82 .text
  83 .type   AsmReadIbr, @function
  84 .proc   AsmReadIbr
  85 .regstk 1, 0, 0, 0
  86
  87 AsmReadIbr::
  88         mov             r8 = ibr[in0];;
  89         br.ret.dpnt     b0;;
  90 .endp   AsmReadIbr
  91
  92 //---------------------------------------------------------------------------------
  93 //++
  94 // AsmWriteIbr
  95 //
  96 // This routine is used to write the current value to Instruction Breakpoint Register (IBR).
  97 //
  98 // Arguments :
  99 //
 100 // On Entry : The 8-bit IBR index.
 101 //            The value should be written to IBR
 102 //
 103 // Return Value: The value written to IBR.
 104 //
 105 //--
 106 //----------------------------------------------------------------------------------
 107 .text
 108 .type   AsmWriteIbr, @function
 109 .proc   AsmWriteIbr
 110 .regstk 2, 0, 0, 0
 111
 112 AsmWriteIbr::
 113         mov             ibr[in0] = in1
 114         mov             r8 = in1;;
 115         srlz.i;;
 116         br.ret.dpnt     b0;;
 117 .endp   AsmWriteIbr