/packages/palmunits/src/m68khwr.pp

  1(******************************************************************************
  2 *
  3 * Copyright (c) 1995-2000 Palm, Inc. or its subsidiaries.
  4 * All rights reserved.
  5 *
  6 * File: M68KHwr.h
  7 *
  8 * Release: Palm OS SDK 4.0 (63220)
  9 *
 10 * Description:
 11 *    Pilot debugger remote hardware/system info
 12 *
 13 * History:
 14 *    1/18/95  RM - Created by Ron Marianetti
 15 *
 16 *****************************************************************************)
 17
 18unit m68khwr;
 19
 20interface
 21
 22uses palmos;
 23
 24(***********************************************************************
 25 * Breakpoint words we use
 26 ***********************************************************************)
 27
 28const
 29  m68kTrapInstr      = $4E40;
 30  m68kTrapVectorMask = $000F;
 31
 32(***********************************************************************
 33 * 68000 Exception Vector table
 34 ***********************************************************************)
 35
 36type
 37  M68KExcTableType = record
 38    initStack: UInt32;                   // initial stack pointer
 39    initPC: UInt32;                      // initial PC
 40
 41    busErr: UInt32;                      // 08
 42    addressErr: UInt32;                  // 0C
 43    illegalInstr: UInt32;                // 10
 44    divideByZero: UInt32;                // 14
 45    chk: UInt32;                         // 18
 46    trap: UInt32;                        // 1C
 47    privilege: UInt32;                   // 20
 48    trace: UInt32;                       // 24
 49    aTrap: UInt32;                       // 28
 50    fTrap: UInt32;                       // 2C
 51    reserved12: UInt32;                  // 30
 52    coproc: UInt32;                      // 34
 53    formatErr: UInt32;                   // 38
 54    unitializedInt: UInt32;              // 3C
 55
 56    reserved: array [0..7] of UInt32;    // 40-5C
 57
 58    spuriousInt: UInt32;                 // 60
 59    autoVec1: UInt32;                    // 64
 60    autoVec2: UInt32;                    // 68
 61    autoVec3: UInt32;                    // 6C
 62    autoVec4: UInt32;                    // 70
 63    autoVec5: UInt32;                    // 74
 64    autoVec6: UInt32;                    // 78
 65    autoVec7: UInt32;                    // 7C
 66
 67    trapN: array [0..15] of UInt32;      // 80 - BC
 68
 69    unassigned: array [0..15] of UInt32; // C0 - FC
 70  end;
 71
 72(**************************************************************************************
 73 *  structure for the Motorolla 68000 processor registers (variables).
 74 *
 75 *  WARNING:
 76 *  This structure is used as the body of the 'read regs' command response
 77 *  packet.  Any changes to it will require changes in the nub's code.
 78 *
 79 **************************************************************************************)
 80
 81  M68KRegsType = record
 82    d: array [0..7] of UInt32; // data registers
 83    a: array [0..7] of UInt32; // address registers
 84    usp: UInt32;               // user stack pointer
 85    ssp: UInt32;               // supervisor stack pointer
 86    pc: UInt32;                // program counter
 87    sr: UInt16;                // status register
 88  end;
 89
 90(**************************************************************************************
 91 *  bit masks for testing M68000 status register fields
 92 **************************************************************************************)
 93
 94// trace mode
 95const
 96  m68kSrTraceMask = $08000;
 97  m68kSrTraceBit  = 15;
 98
 99// supervisor state
100  m68kSrSupervisorMask = $02000;
101
102// interrupt mask
103  m68kSrInterruptMask   = $00700;
104  m68kSrInterruptOffset = 8;      // offset for right-shifting interrupt mask
105
106// condition codes
107  m68kSrExtendMask   = $00010;
108  m68kSrNegativeMask = $00008;
109  m68kSrZeroMask     = $00004;
110  m68kSrOverflowMask = $00002;
111  m68kSrCarryMask    = $00001;
112
113implementation
114
115end.