src/DebugInterface.cpp

   1 /*
   2  *      avr-sim: An atmel AVR simulator
   3  *  Copyright (C) 2008  Tom Haber
   4  *
   5  *  This program is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include "DebugInterface.h"
  20 #include "Core.h"
  21 #include "Device.h"
  22 #include "Instruction.h"
  23 #include "AccessViolation.h"
  24 #include "ImplementationException.h"
  25
  26 #include <algorithm>
  27
  28 #define mmu core.mmu
  29
  30 namespace avr {
  31         DebugInterface::DebugInterface(Device & dev, Core & core)
  32                 : dev(dev), core(core), breaked(false) {
  33                 core.setDebugInterface(this);
  34         }
  35
  36         DebugInterface::~DebugInterface() {
  37                 core.setDebugInterface(0);
  38         }
  39
  40         byte DebugInterface::reg(int reg) const {
  41                 return core.readRegister(reg);
  42         }
  43
  44         byte DebugInterface::status() const {
  45                 return core.readStatus();
  46         }
  47
  48         word DebugInterface::stackPointer() const {
  49                 return core.stack.getSP();
  50         }
  51
  52         dword DebugInterface::programCounter() const {
  53                 return (core.PC << 1);
  54         }
  55
  56         bool DebugInterface::isRegister(unsigned int offset) const {
  57                 return mmu.isRegister(offset);
  58         }
  59
  60         byte DebugInterface::readRegister(unsigned int offset) const {
  61                 return mmu.readByte(offset);
  62         }
  63
  64         const unsigned char *DebugInterface::readRam(
  65                         unsigned int offset, unsigned int size) const {
  66
  67                 return mmu.readRam(offset, size);
  68         }
  69
  70         const unsigned char *DebugInterface::readFlash(
  71                         unsigned int offset, unsigned int size) const {
  72
  73                 return core.flash.read( offset, size );
  74         }
  75
  76         void DebugInterface::writeRam(unsigned char *data,
  77                         unsigned int offset, unsigned int size) {
  78
  79                 mmu.writeRam(data, offset, size);
  80         }
  81
  82         void DebugInterface::writeFlash(unsigned char *data,
  83                         unsigned int offset, unsigned int size) {
  84                 core.loadFlash(data, offset, size);
  85         }
  86
  87         const unsigned char *DebugInterface::readEeprom(
  88                         unsigned int /*offset*/, unsigned int /*size*/) const {
  89                 throw util::ImplementationException( "readEeprom: not yet implemented" );
  90         }
  91
  92         void DebugInterface::writeEeprom(unsigned char * /*data*/,
  93                         unsigned int /*offset*/, unsigned int /*size*/) {
  94                 throw util::ImplementationException( "writeEeprom: not yet implemented" );
  95         }
  96
  97         void DebugInterface::setReg(int reg, byte val) {
  98                 core.writeRegister(reg, val);
  99         }
 100
 101         void DebugInterface::setStatus(byte val) {
 102                 core.writeStatus( val );
 103         }
 104
 105         void DebugInterface::setStackPointer(word val) {
 106                 core.stack.setSP(val);
 107         }
 108
 109         void DebugInterface::setProgramCounter(dword val) {
 110                 core.PC = val >> 1;
 111         }
 112
 113         void DebugInterface::insertBreak(dword addr) {
 114                 breakPoints.push_back( addr );
 115         }
 116
 117         void DebugInterface::removeBreak(dword addr) {
 118                 std::remove(breakPoints.begin(), breakPoints.end(), addr);
 119         }
 120
 121         void DebugInterface::deleteAllBreakpoints() {
 122                 breakPoints.erase(breakPoints.begin(), breakPoints.end());
 123         }
 124
 125         bool DebugInterface::checkBreak(dword addr) {
 126                 if( breakPoints.end() != std::find(breakPoints.begin(), breakPoints.end(), addr)) {
 127                         if( ! breaked ) {
 128                                 breaked = true;
 129                         } else {
 130                                 breaked = false;
 131                         }
 132                 } else {
 133                         breaked = false;
 134                 }
 135
 136                 return breaked;
 137         }
 138
 139         bool DebugInterface::stepDone() const {
 140                 return (core.cpuCycles == 0);
 141         }
 142
 143         const std::string & DebugInterface::registerName(byte addr) const {
 144                 return mmu.registerName(addr);
 145         }
 146
 147         void DebugInterface::trace(std::ostream & ostr, dword addr) {
 148                 word opcode = core.flash.readWord( addr );
 149                 Instruction & instr = core.decoder.decode(opcode);
 150                 instr.trace(&core, ostr);
 151         }
 152
 153 }