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         const unsigned char *DebugInterface::readRam(
  57                         unsigned int offset, unsigned int size) const {
  58
  59                 return mmu.readRam(offset, size);
  60         }
  61
  62         const unsigned char *DebugInterface::readFlash(
  63                         unsigned int offset, unsigned int size) const {
  64
  65                 return core.flash.read( offset, size );
  66         }
  67
  68         void DebugInterface::writeRam(unsigned char *data,
  69                         unsigned int offset, unsigned int size) {
  70
  71                 mmu.writeRam(data, offset, size);
  72         }
  73
  74         void DebugInterface::writeFlash(unsigned char *data,
  75                         unsigned int offset, unsigned int size) {
  76                 core.loadFlash(data, offset, size);
  77         }
  78
  79         const unsigned char *DebugInterface::readEeprom(
  80                         unsigned int /*offset*/, unsigned int /*size*/) const {
  81                 throw util::ImplementationException( "readEeprom: not yet implemented" );
  82         }
  83
  84         void DebugInterface::writeEeprom(unsigned char * /*data*/,
  85                         unsigned int /*offset*/, unsigned int /*size*/) {
  86                 throw util::ImplementationException( "writeEeprom: not yet implemented" );
  87         }
  88
  89         void DebugInterface::setReg(int reg, byte val) {
  90                 core.writeRegister(reg, val);
  91         }
  92
  93         void DebugInterface::setStatus(byte val) {
  94                 core.writeStatus( val );
  95         }
  96
  97         void DebugInterface::setStackPointer(word val) {
  98                 core.stack.setSP(val);
  99         }
 100
 101         void DebugInterface::setProgramCounter(dword val) {
 102                 core.PC = val >> 1;
 103         }
 104
 105         void DebugInterface::insertBreak(dword addr) {
 106                 breakPoints.push_back( addr );
 107         }
 108
 109         void DebugInterface::removeBreak(dword addr) {
 110                 std::remove(breakPoints.begin(), breakPoints.end(), addr);
 111         }
 112
 113         void DebugInterface::deleteAllBreakpoints() {
 114                 breakPoints.erase(breakPoints.begin(), breakPoints.end());
 115         }
 116
 117         bool DebugInterface::checkBreak(dword addr) {
 118                 if( breakPoints.end() != std::find(breakPoints.begin(), breakPoints.end(), addr)) {
 119                         if( ! breaked ) {
 120                                 breaked = true;
 121                         } else {
 122                                 breaked = false;
 123                         }
 124                 } else {
 125                         breaked = false;
 126                 }
 127
 128                 return breaked;
 129         }
 130
 131         bool DebugInterface::stepDone() const {
 132                 return (core.cpuCycles == 0);
 133         }
 134
 135         const std::string & DebugInterface::registerName(byte addr) const {
 136                 return mmu.registerName(addr);
 137         }
 138
 139         void DebugInterface::trace(std::ostream & ostr, dword addr) {
 140                 word opcode = core.flash.readWord( addr );
 141                 Instruction & instr = core.decoder.decode(opcode);
 142                 instr.trace(&core, ostr);
 143         }
 144
 145 }