1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/sdl/debugger.cpp	Sat Mar 03 10:31:27 2012 -0600
     1.3 @@ -0,0 +1,1460 @@
     1.4 +// VisualBoyAdvance - Nintendo Gameboy/GameboyAdvance (TM) emulator.
     1.5 +// Copyright (C) 1999-2003 Forgotten
     1.6 +// Copyright (C) 2004 Forgotten and the VBA development team
     1.7 +
     1.8 +// This program is free software; you can redistribute it and/or modify
     1.9 +// it under the terms of the GNU General Public License as published by
    1.10 +// the Free Software Foundation; either version 2, or(at your option)
    1.11 +// any later version.
    1.12 +//
    1.13 +// This program is distributed in the hope that it will be useful,
    1.14 +// but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.15 +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    1.16 +// GNU General Public License for more details.
    1.17 +//
    1.18 +// You should have received a copy of the GNU General Public License
    1.19 +// along with this program; if not, write to the Free Software Foundation,
    1.20 +// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
    1.21 +
    1.22 +extern "C" {
    1.23 +#include <stdio.h>
    1.24 +#include <stdlib.h>
    1.25 +} // FIXME: should use c++ headers instead
    1.26 +
    1.27 +#include <string.h>
    1.28 +
    1.29 +#include "Port.h"
    1.30 +#include "gba/GBA.h"
    1.31 +#include "gba/GBAGlobals.h"
    1.32 +#include "gba/GBACheats.h"
    1.33 +#include "gba/armdis.h"
    1.34 +#include "gba/elf.h"
    1.35 +#include "common/System.h"
    1.36 +#include "exprNode.h"
    1.37 +
    1.38 +extern bool debugger;
    1.39 +extern int emulating;
    1.40 +
    1.41 +extern struct EmulatedSystem theEmulator;
    1.42 +
    1.43 +#define debuggerReadMemory(addr) \
    1.44 +  READ32LE((&map[(addr)>>24].address[(addr) & map[(addr)>>24].mask]))
    1.45 +
    1.46 +#define debuggerReadHalfWord(addr) \
    1.47 +  READ16LE((&map[(addr)>>24].address[(addr) & map[(addr)>>24].mask]))
    1.48 +
    1.49 +#define debuggerReadByte(addr) \
    1.50 +  map[(addr)>>24].address[(addr) & map[(addr)>>24].mask]
    1.51 +
    1.52 +#define debuggerWriteMemory(addr, value) \
    1.53 +  WRITE32LE(&map[(addr)>>24].address[(addr) & map[(addr)>>24].mask], value)
    1.54 +
    1.55 +#define debuggerWriteHalfWord(addr, value) \
    1.56 +  WRITE16LE(&map[(addr)>>24].address[(addr) & map[(addr)>>24].mask], value)
    1.57 +
    1.58 +#define debuggerWriteByte(addr, value) \
    1.59 +  map[(addr)>>24].address[(addr) & map[(addr)>>24].mask] = (value)
    1.60 +
    1.61 +struct breakpointInfo {
    1.62 +  u32 address;
    1.63 +  u32 value;
    1.64 +  int size;
    1.65 +};
    1.66 +
    1.67 +struct DebuggerCommand {
    1.68 +  const char *name;
    1.69 +  void (*function)(int,char **);
    1.70 +  const char *help;
    1.71 +  const char *syntax;
    1.72 +};
    1.73 +
    1.74 +void debuggerContinueAfterBreakpoint();
    1.75 +
    1.76 +void debuggerHelp(int,char **);
    1.77 +void debuggerNext(int,char **);
    1.78 +void debuggerContinue(int, char **);
    1.79 +void debuggerRegisters(int, char **);
    1.80 +void debuggerBreak(int, char **);
    1.81 +void debuggerBreakDelete(int, char **);
    1.82 +void debuggerBreakList(int, char **);
    1.83 +void debuggerBreakArm(int, char **);
    1.84 +void debuggerBreakWriteClear(int, char **);
    1.85 +void debuggerBreakThumb(int, char **);
    1.86 +void debuggerBreakWrite(int, char **);
    1.87 +void debuggerDebug(int, char **);
    1.88 +void debuggerDisassemble(int, char **);
    1.89 +void debuggerDisassembleArm(int, char **);
    1.90 +void debuggerDisassembleThumb(int, char **);
    1.91 +void debuggerEditByte(int, char **);
    1.92 +void debuggerEditHalfWord(int, char **);
    1.93 +void debuggerEdit(int, char **);
    1.94 +void debuggerIo(int, char **);
    1.95 +void debuggerLocals(int, char **);
    1.96 +void debuggerMemoryByte(int, char **);
    1.97 +void debuggerMemoryHalfWord(int, char **);
    1.98 +void debuggerMemory(int, char **);
    1.99 +void debuggerPrint(int, char **);
   1.100 +void debuggerQuit(int, char **);
   1.101 +void debuggerSetRadix(int, char **);
   1.102 +void debuggerSymbols(int, char **);
   1.103 +void debuggerVerbose(int, char **);
   1.104 +void debuggerWhere(int, char **);
   1.105 +
   1.106 +DebuggerCommand debuggerCommands[] = {
   1.107 +  { "?", debuggerHelp,        "Shows this help information. Type ? <command> for command help", "[<command>]" },
   1.108 +  { "ba", debuggerBreakArm,   "Adds an ARM breakpoint", "<address>" },
   1.109 +  { "bd", debuggerBreakDelete,"Deletes a breakpoint", "<number>" },
   1.110 +  { "bl", debuggerBreakList,  "Lists breakpoints" },
   1.111 +  { "bpw", debuggerBreakWrite, "Break on write", "<address> <size>" },
   1.112 +  { "bpwc", debuggerBreakWriteClear, "Clear break on write", NULL },
   1.113 +  { "break", debuggerBreak,    "Adds a breakpoint on the given function", "<function>|<line>|<file:line>" },
   1.114 +  { "bt", debuggerBreakThumb, "Adds a THUMB breakpoint", "<address>" },
   1.115 +  { "c", debuggerContinue,    "Continues execution" , NULL },
   1.116 +  { "d", debuggerDisassemble, "Disassembles instructions", "[<address> [<number>]]" },
   1.117 +  { "da", debuggerDisassembleArm, "Disassembles ARM instructions", "[<address> [<number>]]" },
   1.118 +  { "dt", debuggerDisassembleThumb, "Disassembles THUMB instructions", "[<address> [<number>]]" },
   1.119 +  { "eb", debuggerEditByte,   "Modify memory location (byte)", "<address> <hex value>" },
   1.120 +  { "eh", debuggerEditHalfWord,"Modify memory location (half-word)","<address> <hex value>" },
   1.121 +  { "ew", debuggerEdit,       "Modify memory location (word)", "<address> <hex value" },
   1.122 +  { "h", debuggerHelp,        "Shows this help information. Type h <command> for command help", "[<command>]" },
   1.123 +  { "io", debuggerIo,         "Show I/O registers status", "[video|video2|dma|timer|misc]" },
   1.124 +  { "locals", debuggerLocals, "Shows local variables", NULL },
   1.125 +  { "mb", debuggerMemoryByte, "Shows memory contents (bytes)", "<address>" },
   1.126 +  { "mh", debuggerMemoryHalfWord, "Shows memory contents (half-words)", "<address>"},
   1.127 +  { "mw", debuggerMemory,     "Shows memory contents (words)", "<address>" },
   1.128 +  { "n", debuggerNext,        "Executes the next instruction", "[<count>]" },
   1.129 +  { "print", debuggerPrint,   "Print the value of a expression (if known)", "[/x|/o|/d] <expression>" },
   1.130 +  { "q", debuggerQuit,        "Quits the emulator", NULL },
   1.131 +  { "r", debuggerRegisters,   "Shows ARM registers", NULL },
   1.132 +  { "radix", debuggerSetRadix,   "Sets the print radix", "<radix>" },
   1.133 +  { "symbols", debuggerSymbols, "List symbols", "[<symbol>]" },
   1.134 +#ifndef FINAL_VERSION
   1.135 +  { "trace", debuggerDebug,       "Sets the trace level", "<value>" },
   1.136 +#endif
   1.137 +#ifdef DEV_VERSION
   1.138 +  { "verbose", debuggerVerbose,     "Change verbose setting", "<value>" },
   1.139 +#endif
   1.140 +  { "where", debuggerWhere,   "Shows call chain", NULL },
   1.141 +  { NULL, NULL, NULL, NULL} // end marker
   1.142 +};
   1.143 +
   1.144 +breakpointInfo debuggerBreakpointList[100];
   1.145 +
   1.146 +int debuggerNumOfBreakpoints = 0;
   1.147 +bool debuggerAtBreakpoint = false;
   1.148 +int debuggerBreakpointNumber = 0;
   1.149 +int debuggerRadix = 0;
   1.150 +
   1.151 +void debuggerApplyBreakpoint(u32 address, int num, int size)
   1.152 +{
   1.153 +  if(size)
   1.154 +    debuggerWriteMemory(address, (u32)(0xe1200070 | 
   1.155 +                                       (num & 0xf) | 
   1.156 +                                       ((num<<4)&0xf0)));
   1.157 +  else
   1.158 +    debuggerWriteHalfWord(address, 
   1.159 +                          (u16)(0xbe00 | num));
   1.160 +}
   1.161 +
   1.162 +void debuggerDisableBreakpoints()
   1.163 +{
   1.164 +  for(int i = 0; i < debuggerNumOfBreakpoints; i++) {
   1.165 +    if(debuggerBreakpointList[i].size)
   1.166 +      debuggerWriteMemory(debuggerBreakpointList[i].address,
   1.167 +                          debuggerBreakpointList[i].value);
   1.168 +    else
   1.169 +      debuggerWriteHalfWord(debuggerBreakpointList[i].address,
   1.170 +                            debuggerBreakpointList[i].value);      
   1.171 +  }
   1.172 +}
   1.173 +
   1.174 +void debuggerEnableBreakpoints(bool skipPC)
   1.175 +{
   1.176 +  for(int i = 0; i < debuggerNumOfBreakpoints; i++) {
   1.177 +    if(debuggerBreakpointList[i].address == armNextPC && skipPC)
   1.178 +      continue;
   1.179 +
   1.180 +    debuggerApplyBreakpoint(debuggerBreakpointList[i].address,
   1.181 +                            i,
   1.182 +                            debuggerBreakpointList[i].size);
   1.183 +  }  
   1.184 +}
   1.185 +
   1.186 +void debuggerUsage(const char *cmd)
   1.187 +{
   1.188 +  for(int i = 0; ; i++) {
   1.189 +    if(debuggerCommands[i].name) {
   1.190 +      if(!strcmp(debuggerCommands[i].name, cmd)) {
   1.191 +        printf("%s %s\t%s\n", 
   1.192 +               debuggerCommands[i].name, 
   1.193 +               debuggerCommands[i].syntax ? debuggerCommands[i].syntax : "",
   1.194 +               debuggerCommands[i].help);
   1.195 +        break;
   1.196 +      }
   1.197 +    } else {
   1.198 +      printf("Unrecognized command '%s'.", cmd);
   1.199 +      break;
   1.200 +    }
   1.201 +  }  
   1.202 +}
   1.203 +
   1.204 +void debuggerPrintBaseType(Type *t, u32 value, u32 location,
   1.205 +                           LocationType type,
   1.206 +                           int bitSize, int bitOffset)
   1.207 +{
   1.208 +  if(bitSize) {
   1.209 +    if(bitOffset)
   1.210 +      value >>= ((t->size*8)-bitOffset-bitSize);
   1.211 +    value &= (1 << bitSize)-1;
   1.212 +  } else {
   1.213 +    if(t->size == 2)
   1.214 +      value &= 0xFFFF;
   1.215 +    else if(t->size == 1)
   1.216 +      value &= 0xFF;
   1.217 +  }
   1.218 +
   1.219 +  if(t->size == 8) {
   1.220 +    u64 value = 0;
   1.221 +    if(type == LOCATION_memory) {
   1.222 +      value = debuggerReadMemory(location) |
   1.223 +        ((u64)debuggerReadMemory(location+4)<<32);
   1.224 +    } else if(type == LOCATION_register) {
   1.225 +      value = reg[location].I | ((u64)reg[location+1].I << 32);
   1.226 +    }
   1.227 +    switch(t->encoding) {
   1.228 +    case DW_ATE_signed:
   1.229 +      switch(debuggerRadix) {
   1.230 +      case 0:
   1.231 +        printf("%lld", value);
   1.232 +        break;
   1.233 +      case 1:
   1.234 +        printf("0x%llx", value);
   1.235 +        break;
   1.236 +      case 2:
   1.237 +        printf("0%llo", value);
   1.238 +        break;
   1.239 +      }
   1.240 +      break;
   1.241 +    case DW_ATE_unsigned:
   1.242 +      switch(debuggerRadix) {
   1.243 +      case 0:
   1.244 +        printf("%llu", value);
   1.245 +        break;
   1.246 +      case 1:
   1.247 +        printf("0x%llx", value);
   1.248 +        break;
   1.249 +      case 2:
   1.250 +        printf("0%llo", value);
   1.251 +        break;
   1.252 +      }
   1.253 +      break;
   1.254 +    default:
   1.255 +      printf("Unknowing 64-bit encoding\n");
   1.256 +    }
   1.257 +    return;
   1.258 +  }
   1.259 +  
   1.260 +  switch(t->encoding) {
   1.261 +  case DW_ATE_boolean:
   1.262 +    if(value)
   1.263 +      printf("true");
   1.264 +    else
   1.265 +      printf("false");
   1.266 +    break;
   1.267 +  case DW_ATE_signed:
   1.268 +    switch(debuggerRadix) {
   1.269 +    case 0:
   1.270 +      printf("%d", value);
   1.271 +      break;
   1.272 +    case 1:
   1.273 +      printf("0x%x", value);
   1.274 +      break;
   1.275 +    case 2:
   1.276 +      printf("0%o", value);
   1.277 +      break;
   1.278 +    }
   1.279 +    break;
   1.280 +  case DW_ATE_unsigned:
   1.281 +  case DW_ATE_unsigned_char:
   1.282 +    switch(debuggerRadix) {
   1.283 +    case 0:
   1.284 +      printf("%u", value);
   1.285 +      break;
   1.286 +    case 1:
   1.287 +      printf("0x%x", value);
   1.288 +      break;
   1.289 +    case 2:
   1.290 +      printf("0%o", value);
   1.291 +      break;
   1.292 +    }
   1.293 +    break;
   1.294 +  default:
   1.295 +    printf("UNKNOWN BASE %d %08x", t->encoding, value);
   1.296 +  }
   1.297 +}
   1.298 +
   1.299 +char *debuggerPrintType(Type *t)
   1.300 +{
   1.301 +  char buffer[1024];  
   1.302 +  static char buffer2[1024];
   1.303 +  
   1.304 +  if(t->type == TYPE_pointer) {
   1.305 +    if(t->pointer)
   1.306 +      strcpy(buffer, debuggerPrintType(t->pointer));
   1.307 +    else
   1.308 +      strcpy(buffer, "void");
   1.309 +    sprintf(buffer2, "%s *", buffer);
   1.310 +    return buffer2;
   1.311 +  } else if(t->type == TYPE_reference) {
   1.312 +    strcpy(buffer, debuggerPrintType(t->pointer));
   1.313 +    sprintf(buffer2, "%s &", buffer);
   1.314 +    return buffer2;    
   1.315 +  }
   1.316 +  return t->name;
   1.317 +}
   1.318 +
   1.319 +void debuggerPrintValueInternal(Function *, Type *, ELFBlock *, int, int, u32);
   1.320 +void debuggerPrintValueInternal(Function *f, Type *t,
   1.321 +                                int bitSize, int bitOffset,
   1.322 +                                u32 objLocation, LocationType type);
   1.323 +
   1.324 +u32 debuggerGetValue(u32 location, LocationType type)
   1.325 +{
   1.326 +  switch(type) {
   1.327 +  case LOCATION_memory:
   1.328 +    return debuggerReadMemory(location);
   1.329 +  case LOCATION_register:
   1.330 +    return reg[location].I;
   1.331 +  case LOCATION_value:
   1.332 +    return location;
   1.333 +  }
   1.334 +  return 0;
   1.335 +}
   1.336 +
   1.337 +void debuggerPrintPointer(Type *t, u32 value)
   1.338 +{
   1.339 +  printf("(%s)0x%08x", debuggerPrintType(t), value);
   1.340 +}
   1.341 +
   1.342 +void debuggerPrintReference(Type *t, u32 value)
   1.343 +{
   1.344 +  printf("(%s)0x%08x", debuggerPrintType(t), value);
   1.345 +}
   1.346 +
   1.347 +void debuggerPrintFunction(Type *t, u32 value)
   1.348 +{
   1.349 +  printf("(%s)0x%08x", debuggerPrintType(t), value);
   1.350 +}
   1.351 +
   1.352 +void debuggerPrintArray(Type *t, u32 value)
   1.353 +{
   1.354 +  // todo
   1.355 +  printf("(%s[])0x%08x", debuggerPrintType(t->array->type), value);
   1.356 +}
   1.357 +
   1.358 +void debuggerPrintMember(Function *f,
   1.359 +                         Member *m,
   1.360 +                         u32 objLocation,
   1.361 +                         u32 location)
   1.362 +{
   1.363 +  int bitSize = m->bitSize;
   1.364 +  if(bitSize) {
   1.365 +    u32 value = 0;
   1.366 +    int off = m->bitOffset;
   1.367 +    int size = m->byteSize;
   1.368 +    u32 v = 0;
   1.369 +    if(size == 1)
   1.370 +      v = debuggerReadByte(location);
   1.371 +      else if(size == 2)
   1.372 +        v = debuggerReadHalfWord(location);
   1.373 +      else if(size == 4)
   1.374 +        v = debuggerReadMemory(location);
   1.375 +      
   1.376 +      while(bitSize) {
   1.377 +        int top = size*8 - off;
   1.378 +        int bot = top - bitSize;
   1.379 +        top--;
   1.380 +        if(bot >= 0) {
   1.381 +          value = (v >> (size*8 - bitSize - off)) & ((1 << bitSize)-1);
   1.382 +          bitSize = 0;
   1.383 +        } else {
   1.384 +          value |= (v & ((1 << top)-1)) << (bitSize - top);
   1.385 +          bitSize -= (top+1);
   1.386 +          location -= size;
   1.387 +          off = 0;
   1.388 +          if(size == 1)
   1.389 +            v = debuggerReadByte(location);
   1.390 +          else if(size == 2)
   1.391 +            v = debuggerReadHalfWord(location);
   1.392 +          else
   1.393 +            v = debuggerReadMemory(location);
   1.394 +        }
   1.395 +      }
   1.396 +      debuggerPrintBaseType(m->type, value, location, LOCATION_memory,
   1.397 +                            bitSize, 0);
   1.398 +    } else {
   1.399 +      debuggerPrintValueInternal(f, m->type, m->location, m->bitSize,
   1.400 +                                 m->bitOffset, objLocation);
   1.401 +    }  
   1.402 +}
   1.403 +
   1.404 +void debuggerPrintStructure(Function *f, Type *t, u32 objLocation)
   1.405 +{
   1.406 +  printf("{");
   1.407 +  int count = t->structure->memberCount;
   1.408 +  int i = 0;
   1.409 +  while(i < count) {
   1.410 +    Member *m = &t->structure->members[i];
   1.411 +    printf("%s=", m->name);
   1.412 +    LocationType type;
   1.413 +    u32 location = elfDecodeLocation(f, m->location, &type, objLocation);
   1.414 +    debuggerPrintMember(f, m, objLocation, location);
   1.415 +    i++;
   1.416 +    if(i < count)
   1.417 +      printf(",");
   1.418 +  }
   1.419 +  printf("}");
   1.420 +}
   1.421 +
   1.422 +void debuggerPrintUnion(Function *f, Type *t, u32 objLocation)
   1.423 +{
   1.424 +  // todo
   1.425 +  printf("{");
   1.426 +  int count = t->structure->memberCount;
   1.427 +  int i = 0;
   1.428 +  while(i < count) {
   1.429 +    Member *m = &t->structure->members[i];
   1.430 +    printf("%s=", m->name);
   1.431 +    debuggerPrintMember(f, m, objLocation, 0);
   1.432 +    i++;
   1.433 +    if(i < count)
   1.434 +      printf(",");
   1.435 +  }
   1.436 +  printf("}");
   1.437 +}
   1.438 +
   1.439 +void debuggerPrintEnum(Type *t, u32 value)
   1.440 +{
   1.441 +  int i;
   1.442 +  for(i = 0; i < t->enumeration->count; i++) {
   1.443 +    EnumMember *m = (EnumMember *)&t->enumeration->members[i];
   1.444 +    if(value == m->value) {
   1.445 +      puts(m->name);
   1.446 +      return;
   1.447 +    }
   1.448 +  }
   1.449 +  printf("(UNKNOWN VALUE) %d", value);
   1.450 +}
   1.451 +
   1.452 +void debuggerPrintValueInternal(Function *f, Type *t,
   1.453 +                                int bitSize, int bitOffset,
   1.454 +                                u32 objLocation, LocationType type)
   1.455 +{
   1.456 +  u32 value = debuggerGetValue(objLocation, type);
   1.457 +  if(!t) {
   1.458 +    printf("void");
   1.459 +    return;
   1.460 +  }
   1.461 +  switch(t->type) {
   1.462 +  case TYPE_base:
   1.463 +    debuggerPrintBaseType(t, value, objLocation, type, bitSize, bitOffset);
   1.464 +    break;
   1.465 +  case TYPE_pointer:
   1.466 +    debuggerPrintPointer(t, value);
   1.467 +    break;
   1.468 +  case TYPE_reference:
   1.469 +    debuggerPrintReference(t, value);
   1.470 +    break;
   1.471 +  case TYPE_function:
   1.472 +    debuggerPrintFunction(t, value);
   1.473 +    break;
   1.474 +  case TYPE_array:
   1.475 +    debuggerPrintArray(t, objLocation);
   1.476 +    break;
   1.477 +  case TYPE_struct:
   1.478 +    debuggerPrintStructure(f, t, objLocation);
   1.479 +    break;
   1.480 +  case TYPE_union:
   1.481 +    debuggerPrintUnion(f, t, objLocation);
   1.482 +    break;
   1.483 +  case TYPE_enum:
   1.484 +    debuggerPrintEnum(t, value);
   1.485 +    break;
   1.486 +  default:
   1.487 +    printf("%08x", value);
   1.488 +    break;
   1.489 +  }  
   1.490 +}
   1.491 +
   1.492 +void debuggerPrintValueInternal(Function *f, Type *t, ELFBlock *loc,
   1.493 +                                int bitSize, int bitOffset, u32 objLocation)
   1.494 +{
   1.495 +  LocationType type;  
   1.496 +  u32 location;
   1.497 +  if(loc) {
   1.498 +    if(objLocation)
   1.499 +      location = elfDecodeLocation(f, loc, &type, objLocation);
   1.500 +    else
   1.501 +      location = elfDecodeLocation(f, loc,&type);
   1.502 +  } else {
   1.503 +    location = objLocation;
   1.504 +    type = LOCATION_memory;
   1.505 +  }
   1.506 +
   1.507 +  debuggerPrintValueInternal(f, t, bitSize, bitOffset, location, type);
   1.508 +}
   1.509 +
   1.510 +void debuggerPrintValue(Function *f, Object *o)
   1.511 +{
   1.512 +  debuggerPrintValueInternal(f, o->type, o->location, 0, 0, 0);
   1.513 +  
   1.514 +  printf("\n");
   1.515 +}
   1.516 +
   1.517 +void debuggerSymbols(int argc, char **argv)
   1.518 +{
   1.519 +  int i = 0;
   1.520 +  u32 value;
   1.521 +  u32 size;
   1.522 +  int type;
   1.523 +  bool match = false;
   1.524 +  int matchSize = 0;
   1.525 +  char *matchStr = NULL;
   1.526 +  
   1.527 +  if(argc == 2) {
   1.528 +    match = true;
   1.529 +    matchSize = strlen(argv[1]);
   1.530 +    matchStr = argv[1];
   1.531 +  }
   1.532 +  printf("Symbol               Value    Size     Type   \n");
   1.533 +  printf("-------------------- -------  -------- -------\n");
   1.534 +  char *s = NULL;
   1.535 +  while((s = elfGetSymbol(i, &value, &size, &type))) {
   1.536 +    if(*s) {
   1.537 +      if(match) {
   1.538 +        if(strncmp(s, matchStr, matchSize) != 0) {
   1.539 +          i++;
   1.540 +          continue;
   1.541 +        }
   1.542 +      }
   1.543 +      const char *ts = "?";
   1.544 +      switch(type) {
   1.545 +      case 2:
   1.546 +        ts = "ARM";
   1.547 +        break;
   1.548 +      case 0x0d:
   1.549 +        ts = "THUMB";
   1.550 +        break;
   1.551 +      case 1:
   1.552 +        ts = "DATA";
   1.553 +        break;
   1.554 +      }
   1.555 +      printf("%-20s %08x %08x %-7s\n",
   1.556 +             s, value, size, ts);
   1.557 +    }
   1.558 +    i++;
   1.559 +  }
   1.560 +}
   1.561 +
   1.562 +void debuggerSetRadix(int argc, char **argv)
   1.563 +{
   1.564 +  if(argc != 2)
   1.565 +    debuggerUsage(argv[0]);
   1.566 +  else {
   1.567 +    int r = atoi(argv[1]);
   1.568 +
   1.569 +    bool error = false;
   1.570 +    switch(r) {
   1.571 +    case 10:
   1.572 +      debuggerRadix = 0;
   1.573 +      break;
   1.574 +    case 8:
   1.575 +      debuggerRadix = 2;
   1.576 +      break;
   1.577 +    case 16:
   1.578 +      debuggerRadix = 1;
   1.579 +      break;
   1.580 +    default:
   1.581 +      error = true;
   1.582 +      printf("Unknown radix %d. Valid values are 8, 10 and 16.\n", r);
   1.583 +      break;
   1.584 +    }
   1.585 +    if(!error)
   1.586 +      printf("Radix set to %d\n", r);
   1.587 +  }
   1.588 +}
   1.589 +
   1.590 +void debuggerPrint(int argc, char **argv)
   1.591 +{
   1.592 +  if(argc != 2 && argc != 3) {
   1.593 +    debuggerUsage(argv[0]);
   1.594 +  } else {
   1.595 +    u32 pc = armNextPC;
   1.596 +    Function *f = NULL;
   1.597 +    CompileUnit *u = NULL;
   1.598 +    
   1.599 +    elfGetCurrentFunction(pc,
   1.600 +                          &f, &u);
   1.601 +
   1.602 +    int oldRadix = debuggerRadix;
   1.603 +    if(argc == 3) {
   1.604 +      if(argv[1][0] == '/') {
   1.605 +        if(argv[1][1] == 'x')
   1.606 +          debuggerRadix = 1;
   1.607 +        else if(argv[1][1] == 'o')
   1.608 +          debuggerRadix = 2;
   1.609 +        else if(argv[1][1] == 'd')
   1.610 +          debuggerRadix = 0;
   1.611 +        else {
   1.612 +          printf("Unknown format %c\n", argv[1][1]);
   1.613 +          return;
   1.614 +        }
   1.615 +      } else {
   1.616 +        printf("Unknown option %s\n", argv[1]);
   1.617 +        return;
   1.618 +      }
   1.619 +    } 
   1.620 +    
   1.621 +    char *s = argc == 2 ? argv[1] : argv[2];
   1.622 +
   1.623 +    extern char *exprString;
   1.624 +    extern int exprCol;
   1.625 +    extern int yyparse();
   1.626 +    exprString = s;
   1.627 +    exprCol = 0;
   1.628 +    if(!yyparse()) {
   1.629 +      extern Node *result;
   1.630 +      if(result->resolve(result, f, u)) {
   1.631 +        if(result->member)
   1.632 +          debuggerPrintMember(f,
   1.633 +                              result->member,
   1.634 +                              result->objLocation,
   1.635 +                              result->location);
   1.636 +        else
   1.637 +          debuggerPrintValueInternal(f, result->type, 0, 0,
   1.638 +                                     result->location,
   1.639 +                                     result->locType);
   1.640 +        printf("\n");
   1.641 +      } else {
   1.642 +        printf("Error resolving expression\n");
   1.643 +      }
   1.644 +    } else {
   1.645 +      printf("Error parsing expression:\n");
   1.646 +      printf("%s\n", s);
   1.647 +      exprCol--;
   1.648 +      for(int i = 0; i < exprCol; i++)
   1.649 +        printf(" ");
   1.650 +      printf("^\n");
   1.651 +    }
   1.652 +    extern void exprCleanBuffer();
   1.653 +    exprCleanBuffer();
   1.654 +    exprNodeCleanUp();
   1.655 +    debuggerRadix = oldRadix;
   1.656 +  }
   1.657 +}
   1.658 +
   1.659 +void debuggerHelp(int n, char **args)
   1.660 +{
   1.661 +  if(n == 2) {
   1.662 +    debuggerUsage(args[1]);
   1.663 +  } else {
   1.664 +    for(int i = 0; ; i++) {
   1.665 +      if(debuggerCommands[i].name) {
   1.666 +        printf("%s\t%s\n", debuggerCommands[i].name, debuggerCommands[i].help);
   1.667 +      } else
   1.668 +        break;
   1.669 +    }
   1.670 +  }
   1.671 +}
   1.672 +
   1.673 +void debuggerDebug(int n, char **args)
   1.674 +{
   1.675 +  if(n == 2) {
   1.676 +    int v = 0;
   1.677 +    sscanf(args[1], "%d", &v);
   1.678 +    systemDebug = v;
   1.679 +    printf("Debug level set to %d\n", systemDebug);
   1.680 +  } else
   1.681 +    debuggerUsage("trace");      
   1.682 +}
   1.683 +
   1.684 +void debuggerVerbose(int n, char **args)
   1.685 +{
   1.686 +  if(n == 2) {
   1.687 +    int v = 0;
   1.688 +    sscanf(args[1], "%d", &v);
   1.689 +    systemVerbose = v;
   1.690 +    printf("Verbose level set to %d\n", systemVerbose);
   1.691 +  } else
   1.692 +    debuggerUsage("verbose");    
   1.693 +}
   1.694 +
   1.695 +void debuggerWhere(int n, char **args)
   1.696 +{
   1.697 +  void elfPrintCallChain(u32);
   1.698 +  elfPrintCallChain(armNextPC);
   1.699 +}
   1.700 +
   1.701 +void debuggerLocals(int n, char **args)
   1.702 +{
   1.703 +  Function *f = NULL;
   1.704 +  CompileUnit *u = NULL;
   1.705 +  u32 pc = armNextPC;
   1.706 +  if(elfGetCurrentFunction(pc,
   1.707 +                           &f, &u)) {
   1.708 +    Object *o = f->parameters;
   1.709 +    while(o) {
   1.710 +      printf("%s=", o->name);
   1.711 +      debuggerPrintValue(f, o);
   1.712 +      o = o->next;
   1.713 +    }
   1.714 +
   1.715 +    o = f->variables;
   1.716 +    while(o) {
   1.717 +      bool visible = o->startScope ? pc>=o->startScope : true;
   1.718 +      if(visible)
   1.719 +        visible = o->endScope ? pc < o->endScope : true;
   1.720 +      if(visible) {
   1.721 +        printf("%s=", o->name);
   1.722 +        debuggerPrintValue(f, o);
   1.723 +      }
   1.724 +      o = o->next;      
   1.725 +    }
   1.726 +  } else {
   1.727 +    printf("No information for current address\n");
   1.728 +  }  
   1.729 +}
   1.730 +
   1.731 +void debuggerNext(int n, char **args)
   1.732 +{
   1.733 +  int count = 1;
   1.734 +  if(n == 2) {
   1.735 +    sscanf(args[1], "%d", &count);
   1.736 +  }
   1.737 +  for(int i = 0; i < count; i++) {
   1.738 +    if(debuggerAtBreakpoint) {
   1.739 +      debuggerContinueAfterBreakpoint();
   1.740 +      debuggerEnableBreakpoints(false);
   1.741 +    } else 
   1.742 +      theEmulator.emuMain(1);
   1.743 +  }
   1.744 +  debuggerDisableBreakpoints();
   1.745 +  Function *f = NULL;
   1.746 +  CompileUnit *u = NULL;
   1.747 +  u32 a = armNextPC;
   1.748 +  if(elfGetCurrentFunction(a, &f, &u)) {
   1.749 +    char *file;
   1.750 +    int line = elfFindLine(u, f, a, &file);
   1.751 +    
   1.752 +    printf("File %s, function %s, line %d\n", file, f->name,
   1.753 +           line);
   1.754 +  }
   1.755 +  debuggerRegisters(0, NULL);
   1.756 +}
   1.757 +
   1.758 +void debuggerContinue(int n, char **args)
   1.759 +{
   1.760 +  if(debuggerAtBreakpoint)
   1.761 +    debuggerContinueAfterBreakpoint();
   1.762 +  debuggerEnableBreakpoints(false);
   1.763 +  debugger = false;
   1.764 +}
   1.765 +
   1.766 +void debuggerSignal(int sig,int number)
   1.767 +{
   1.768 +  switch(sig) {
   1.769 +  case 4:
   1.770 +    {
   1.771 +      printf("Illegal instruction at %08x\n", armNextPC);
   1.772 +      debugger = true;
   1.773 +    }
   1.774 +    break;
   1.775 +  case 5:
   1.776 +    {
   1.777 +      printf("Breakpoint %d reached\n", number);
   1.778 +      debugger = true;
   1.779 +      debuggerAtBreakpoint = true;
   1.780 +      debuggerBreakpointNumber = number;
   1.781 +      debuggerDisableBreakpoints();
   1.782 +      
   1.783 +      Function *f = NULL;
   1.784 +      CompileUnit *u = NULL;
   1.785 +      
   1.786 +      if(elfGetCurrentFunction(armNextPC, &f, &u)) {
   1.787 +        char *file;
   1.788 +        int line = elfFindLine(u,f,armNextPC,&file);
   1.789 +        printf("File %s, function %s, line %d\n", file, f->name,
   1.790 +               line);
   1.791 +      }
   1.792 +    }
   1.793 +    break;
   1.794 +  default:
   1.795 +    printf("Unknown signal %d\n", sig);
   1.796 +    break;
   1.797 +  }
   1.798 +}
   1.799 +
   1.800 +void debuggerBreakList(int, char **)
   1.801 +{
   1.802 +  printf("Num Address  Type  Symbol\n");
   1.803 +  printf("--- -------- ----- ------\n");
   1.804 +  for(int i = 0; i < debuggerNumOfBreakpoints; i++) {
   1.805 +    printf("%3d %08x %s %s\n",i, debuggerBreakpointList[i].address,
   1.806 +           debuggerBreakpointList[i].size ? "ARM" : "THUMB",
   1.807 +           elfGetAddressSymbol(debuggerBreakpointList[i].address));
   1.808 +  }
   1.809 +}
   1.810 +
   1.811 +void debuggerBreakDelete(int n, char **args)
   1.812 +{
   1.813 +  if(n == 2) {
   1.814 +    int n = 0;
   1.815 +    sscanf(args[1], "%d", &n);
   1.816 +    printf("Deleting breakpoint %d (%d)\n", n, debuggerNumOfBreakpoints);
   1.817 +    if(n >= 0 && n < debuggerNumOfBreakpoints) {
   1.818 +      n++;
   1.819 +      if(n < debuggerNumOfBreakpoints) {
   1.820 +        for(int i = n; i < debuggerNumOfBreakpoints; i++) {
   1.821 +          debuggerBreakpointList[i-1].address = 
   1.822 +            debuggerBreakpointList[i].address;
   1.823 +          debuggerBreakpointList[i-1].value = 
   1.824 +            debuggerBreakpointList[i].value;
   1.825 +          debuggerBreakpointList[i-1].size = 
   1.826 +            debuggerBreakpointList[i].size;
   1.827 +        }
   1.828 +      }
   1.829 +      debuggerNumOfBreakpoints--;
   1.830 +    }
   1.831 +  } else
   1.832 +    debuggerUsage("bd");    
   1.833 +}
   1.834 +
   1.835 +void debuggerBreak(int n, char **args)
   1.836 +{
   1.837 +  if(n == 2) {
   1.838 +    u32 address = 0;
   1.839 +    u32 value = 0;
   1.840 +    int type = 0;
   1.841 +    char *s = args[1];
   1.842 +    char c = *s;
   1.843 +    if(strchr(s, ':')) {
   1.844 +      char *name = s;
   1.845 +      char *l = strchr(s, ':');
   1.846 +      *l++ = 0;
   1.847 +      int line = atoi(l);
   1.848 +
   1.849 +      u32 addr;
   1.850 +      Function *f;
   1.851 +      CompileUnit *u;
   1.852 +      
   1.853 +      if(elfFindLineInModule(&addr, name, line)) {
   1.854 +        if(elfGetCurrentFunction(addr, &f, &u)) {
   1.855 +          u32 addr2;
   1.856 +          if(elfGetSymbolAddress(f->name, &addr2, &value, &type)) {
   1.857 +            address = addr;
   1.858 +          } else {
   1.859 +            printf("Unable to get function symbol data\n");
   1.860 +            return;
   1.861 +          }
   1.862 +        } else {
   1.863 +          printf("Unable to find function for address\n");
   1.864 +          return;
   1.865 +        }
   1.866 +      } else {
   1.867 +        printf("Unable to find module or line\n");
   1.868 +        return;
   1.869 +      }
   1.870 +    } else if(c >= '0' && c <= '9') {
   1.871 +      int line = atoi(s);
   1.872 +      Function *f;
   1.873 +      CompileUnit *u;
   1.874 +      u32 addr;
   1.875 +      
   1.876 +      if(elfGetCurrentFunction(armNextPC, &f, &u)) {
   1.877 +        if(elfFindLineInUnit(&addr, u, line)) {
   1.878 +          if(elfGetCurrentFunction(addr, &f, &u)) {
   1.879 +            u32 addr2;
   1.880 +            if(elfGetSymbolAddress(f->name, &addr2, &value, &type)) {
   1.881 +              address = addr;
   1.882 +            } else {
   1.883 +              printf("Unable to get function symbol data\n");
   1.884 +              return;
   1.885 +            }
   1.886 +          } else {
   1.887 +            printf("Unable to find function for address\n");
   1.888 +            return;
   1.889 +          }
   1.890 +        } else {
   1.891 +          printf("Unable to find line\n");
   1.892 +          return;
   1.893 +        }
   1.894 +      } else {
   1.895 +        printf("Cannot find current function\n");
   1.896 +        return;
   1.897 +      }
   1.898 +    } else {
   1.899 +      if(!elfGetSymbolAddress(s, &address, &value, &type)) {
   1.900 +        printf("Function %s not found\n", args[1]);
   1.901 +        return;
   1.902 +      }
   1.903 +    }
   1.904 +    if(type == 0x02 || type == 0x0d) {
   1.905 +      int i = debuggerNumOfBreakpoints;
   1.906 +      int size = 0;
   1.907 +      if(type == 2)
   1.908 +        size = 1;
   1.909 +      debuggerBreakpointList[i].address = address;
   1.910 +      debuggerBreakpointList[i].value = type == 0x02 ?
   1.911 +        debuggerReadMemory(address) : debuggerReadHalfWord(address);
   1.912 +      debuggerBreakpointList[i].size = size;
   1.913 +      //      debuggerApplyBreakpoint(address, i, size);
   1.914 +      debuggerNumOfBreakpoints++;
   1.915 +      if(size)
   1.916 +        printf("Added ARM breakpoint at %08x\n", address);        
   1.917 +      else
   1.918 +        printf("Added THUMB breakpoint at %08x\n", address);
   1.919 +    } else {
   1.920 +      printf("%s is not a function symbol\n", args[1]); 
   1.921 +    }
   1.922 +  } else
   1.923 +    debuggerUsage("break");  
   1.924 +}
   1.925 +
   1.926 +void debuggerBreakThumb(int n, char **args)
   1.927 +{
   1.928 +  if(n == 2) {
   1.929 +    u32 address = 0;
   1.930 +    sscanf(args[1],"%x", &address);
   1.931 +    int i = debuggerNumOfBreakpoints;
   1.932 +    debuggerBreakpointList[i].address = address;
   1.933 +    debuggerBreakpointList[i].value = debuggerReadHalfWord(address);
   1.934 +    debuggerBreakpointList[i].size = 0;
   1.935 +    //    debuggerApplyBreakpoint(address, i, 0);
   1.936 +    debuggerNumOfBreakpoints++;
   1.937 +    printf("Added THUMB breakpoint at %08x\n", address);
   1.938 +  } else
   1.939 +    debuggerUsage("bt");    
   1.940 +}
   1.941 +
   1.942 +void debuggerBreakArm(int n, char **args)
   1.943 +{
   1.944 +  if(n == 2) {
   1.945 +    u32 address = 0;
   1.946 +    sscanf(args[1],"%x", &address);
   1.947 +    int i = debuggerNumOfBreakpoints;
   1.948 +    debuggerBreakpointList[i].address = address;
   1.949 +    debuggerBreakpointList[i].value = debuggerReadMemory(address);
   1.950 +    debuggerBreakpointList[i].size = 1;
   1.951 +    //    debuggerApplyBreakpoint(address, i, 1);
   1.952 +    debuggerNumOfBreakpoints++;
   1.953 +    printf("Added ARM breakpoint at %08x\n", address);
   1.954 +  } else
   1.955 +    debuggerUsage("ba");
   1.956 +}
   1.957 +
   1.958 +void debuggerBreakOnWrite(u32 *mem, u32 oldvalue, u32 value, int size)
   1.959 +{
   1.960 +  u32 address = 0;
   1.961 +  if(mem >= (u32*)&workRAM[0] && mem <= (u32*)&workRAM[0x3ffff])
   1.962 +    address = 0x2000000 + ((u64)mem - (u64)&workRAM[0]);
   1.963 +  else
   1.964 +    address = 0x3000000 + ((u64)mem - (u64)&internalRAM[0]);
   1.965 +
   1.966 +  if(size == 2)
   1.967 +    printf("Breakpoint (on write) address %08x old:%08x new:%08x\n", 
   1.968 +           address, oldvalue, value);
   1.969 +  else if(size == 1)
   1.970 +    printf("Breakpoint (on write) address %08x old:%04x new:%04x\n", 
   1.971 +           address, (u16)oldvalue,(u16)value);
   1.972 +  else
   1.973 +    printf("Breakpoint (on write) address %08x old:%02x new:%02x\n", 
   1.974 +           address, (u8)oldvalue, (u8)value);
   1.975 +  debugger = true;
   1.976 +}
   1.977 +
   1.978 +void debuggerBreakWriteClear(int n, char **args)
   1.979 +{
   1.980 +  memset(freezeWorkRAM, false, 0x40000);
   1.981 +  memset(freezeInternalRAM, false, 0x8000);
   1.982 +  printf("Cleared all break on write\n");
   1.983 +}
   1.984 +
   1.985 +void debuggerBreakWrite(int n, char **args)
   1.986 +{
   1.987 +  if(n == 3) {
   1.988 +    if(cheatsNumber != 0) {
   1.989 +      printf("Cheats are enabled. Cannot continue.\n");
   1.990 +      return;
   1.991 +    }
   1.992 +    u32 address = 0;
   1.993 +    sscanf(args[1], "%x", &address);
   1.994 +    int n = 0;
   1.995 +    sscanf(args[2], "%d", &n);
   1.996 +    
   1.997 +    if(address < 0x2000000 || address > 0x3007fff) {
   1.998 +      printf("Invalid address: %08x\n", address);
   1.999 +      return;
  1.1000 +    }
  1.1001 +    
  1.1002 +    if(address > 0x203ffff && address < 0x3000000) {
  1.1003 +      printf("Invalid address: %08x\n", address);
  1.1004 +      return;
  1.1005 +    }
  1.1006 +
  1.1007 +    u32 final = address + n;
  1.1008 +
  1.1009 +    if(address < 0x2040000 && final > 0x2040000) {
  1.1010 +      printf("Invalid byte count: %d\n", n);
  1.1011 +      return;
  1.1012 +    } else if(address < 0x3008000 && final > 0x3008000) {
  1.1013 +      printf("Invalid byte count: %d\n", n);
  1.1014 +      return;
  1.1015 +    }
  1.1016 +    printf("Added break on write at %08x for %d bytes\n", address, n);
  1.1017 +    for(int i = 0; i < n; i++) {
  1.1018 +      if((address >> 24) == 2)
  1.1019 +        freezeWorkRAM[address & 0x3ffff] = true;
  1.1020 +      else
  1.1021 +        freezeInternalRAM[address & 0x7fff] = true;
  1.1022 +      address++;
  1.1023 +    }
  1.1024 +  } else
  1.1025 +    debuggerUsage("bpw");    
  1.1026 +}
  1.1027 +
  1.1028 +void debuggerDisassembleArm(int n, char **args)
  1.1029 +{
  1.1030 +  char buffer[80];
  1.1031 +  u32 pc = reg[15].I;
  1.1032 +  pc -= 4;
  1.1033 +  int count = 20;
  1.1034 +  if(n >= 2) {
  1.1035 +    sscanf(args[1], "%x", &pc);
  1.1036 +  }
  1.1037 +  if(pc & 3) {
  1.1038 +    printf("Misaligned address %08x\n", pc);
  1.1039 +    pc &= 0xfffffffc;
  1.1040 +  }
  1.1041 +  if(n >= 3) {
  1.1042 +    sscanf(args[2], "%d", &count);
  1.1043 +  }
  1.1044 +  int i = 0;
  1.1045 +  int len = 0;
  1.1046 +  char format[30];
  1.1047 +  for(i = 0; i < count; i++) {
  1.1048 +    int l = strlen(elfGetAddressSymbol(pc+4*i));
  1.1049 +    if(l > len)
  1.1050 +      len = l;
  1.1051 +  }
  1.1052 +  sprintf(format, "%%08x %%-%ds %%s\n", len);
  1.1053 +  for(i = 0; i < count; i++) {
  1.1054 +    u32 addr = pc;
  1.1055 +    pc += disArm(pc, buffer, 2);
  1.1056 +    printf(format, addr, elfGetAddressSymbol(addr), buffer);
  1.1057 +  }
  1.1058 +}
  1.1059 +
  1.1060 +void debuggerDisassembleThumb(int n, char **args)
  1.1061 +{
  1.1062 +  char buffer[80];
  1.1063 +  u32 pc = reg[15].I;
  1.1064 +  pc -= 2;
  1.1065 +  int count = 20;
  1.1066 +  if(n >= 2) {
  1.1067 +    sscanf(args[1], "%x", &pc);
  1.1068 +  }
  1.1069 +  if(pc & 1) {
  1.1070 +    printf("Misaligned address %08x\n", pc);
  1.1071 +    pc &= 0xfffffffe;
  1.1072 +  }
  1.1073 +  if(n >= 3) {
  1.1074 +    sscanf(args[2], "%d", &count);
  1.1075 +  }
  1.1076 +
  1.1077 +  int i = 0;
  1.1078 +  int len = 0;
  1.1079 +  char format[30];
  1.1080 +  for(i = 0; i < count; i++) {
  1.1081 +    int l = strlen(elfGetAddressSymbol(pc+2*i));
  1.1082 +    if(l > len)
  1.1083 +      len = l;
  1.1084 +  }
  1.1085 +  sprintf(format, "%%08x %%-%ds %%s\n", len);  
  1.1086 +  
  1.1087 +  for(i = 0; i < count; i++) {
  1.1088 +    u32 addr = pc;
  1.1089 +    pc += disThumb(pc, buffer, 2);
  1.1090 +    printf(format, addr, elfGetAddressSymbol(addr), buffer);
  1.1091 +  }
  1.1092 +}
  1.1093 +
  1.1094 +void debuggerDisassemble(int n, char **args)
  1.1095 +{
  1.1096 +  if(armState)
  1.1097 +    debuggerDisassembleArm(n, args);
  1.1098 +  else
  1.1099 +    debuggerDisassembleThumb(n, args);
  1.1100 +}
  1.1101 +
  1.1102 +void debuggerContinueAfterBreakpoint()
  1.1103 +{
  1.1104 +  printf("Continuing after breakpoint\n");
  1.1105 +  debuggerEnableBreakpoints(true);
  1.1106 +  theEmulator.emuMain(1);
  1.1107 +  debuggerAtBreakpoint = false;
  1.1108 +}
  1.1109 +
  1.1110 +void debuggerRegisters(int, char **)
  1.1111 +{
  1.1112 +  char *command[3];
  1.1113 +  char buffer[10];
  1.1114 +
  1.1115 +  printf("R00=%08x R04=%08x R08=%08x R12=%08x\n",
  1.1116 +         reg[0].I, reg[4].I, reg[8].I, reg[12].I);
  1.1117 +  printf("R01=%08x R05=%08x R09=%08x R13=%08x\n",
  1.1118 +         reg[1].I, reg[5].I, reg[9].I, reg[13].I);
  1.1119 +  printf("R02=%08x R06=%08x R10=%08x R14=%08x\n",
  1.1120 +         reg[2].I, reg[6].I, reg[10].I, reg[14].I);
  1.1121 +  printf("R03=%08x R07=%08x R11=%08x R15=%08x\n",
  1.1122 +         reg[3].I, reg[7].I, reg[11].I, reg[15].I);
  1.1123 +  printf("CPSR=%08x (%c%c%c%c%c%c%c Mode: %02x)\n",
  1.1124 +         reg[16].I,
  1.1125 +         (N_FLAG ? 'N' : '.'),
  1.1126 +         (Z_FLAG ? 'Z' : '.'),
  1.1127 +         (C_FLAG ? 'C' : '.'),
  1.1128 +         (V_FLAG ? 'V' : '.'),
  1.1129 +         (armIrqEnable ? '.' : 'I'),
  1.1130 +         ((!(reg[16].I & 0x40)) ? '.' : 'F'),
  1.1131 +         (armState ? '.' : 'T'),
  1.1132 +         armMode);
  1.1133 +  sprintf(buffer,"%08x", armState ? reg[15].I - 4 : reg[15].I - 2);
  1.1134 +  command[0]=const_cast<char *>("m");
  1.1135 +  command[1]=buffer;
  1.1136 +  command[2]=const_cast<char *>("1");
  1.1137 +  debuggerDisassemble(3, command);
  1.1138 +}
  1.1139 +
  1.1140 +void debuggerIoVideo()
  1.1141 +{
  1.1142 +  printf("DISPCNT  = %04x\n", DISPCNT);
  1.1143 +  printf("DISPSTAT = %04x\n", DISPSTAT);
  1.1144 +  printf("VCOUNT   = %04x\n", VCOUNT);
  1.1145 +  printf("BG0CNT   = %04x\n", BG0CNT);
  1.1146 +  printf("BG1CNT   = %04x\n", BG1CNT);
  1.1147 +  printf("BG2CNT   = %04x\n", BG2CNT);
  1.1148 +  printf("BG3CNT   = %04x\n", BG3CNT);
  1.1149 +  printf("WIN0H    = %04x\n", WIN0H);
  1.1150 +  printf("WIN0V    = %04x\n", WIN0V);
  1.1151 +  printf("WIN1H    = %04x\n", WIN1H);
  1.1152 +  printf("WIN1V    = %04x\n", WIN1V);
  1.1153 +  printf("WININ    = %04x\n", WININ);
  1.1154 +  printf("WINOUT   = %04x\n", WINOUT);
  1.1155 +  printf("MOSAIC   = %04x\n", MOSAIC);
  1.1156 +  printf("BLDMOD   = %04x\n", BLDMOD);
  1.1157 +  printf("COLEV    = %04x\n", COLEV);
  1.1158 +  printf("COLY     = %04x\n", COLY);
  1.1159 +}
  1.1160 +
  1.1161 +void debuggerIoVideo2()
  1.1162 +{
  1.1163 +  printf("BG0HOFS  = %04x\n", BG0HOFS);
  1.1164 +  printf("BG0VOFS  = %04x\n", BG0VOFS);
  1.1165 +  printf("BG1HOFS  = %04x\n", BG1HOFS);
  1.1166 +  printf("BG1VOFS  = %04x\n", BG1VOFS);
  1.1167 +  printf("BG2HOFS  = %04x\n", BG2HOFS);
  1.1168 +  printf("BG2VOFS  = %04x\n", BG2VOFS);
  1.1169 +  printf("BG3HOFS  = %04x\n", BG3HOFS);
  1.1170 +  printf("BG3VOFS  = %04x\n", BG3VOFS);
  1.1171 +  printf("BG2PA    = %04x\n", BG2PA);
  1.1172 +  printf("BG2PB    = %04x\n", BG2PB);
  1.1173 +  printf("BG2PC    = %04x\n", BG2PC);
  1.1174 +  printf("BG2PD    = %04x\n", BG2PD);
  1.1175 +  printf("BG2X     = %08x\n", (BG2X_H<<16)|BG2X_L);
  1.1176 +  printf("BG2Y     = %08x\n", (BG2Y_H<<16)|BG2Y_L);
  1.1177 +  printf("BG3PA    = %04x\n", BG3PA);
  1.1178 +  printf("BG3PB    = %04x\n", BG3PB);
  1.1179 +  printf("BG3PC    = %04x\n", BG3PC);
  1.1180 +  printf("BG3PD    = %04x\n", BG3PD);
  1.1181 +  printf("BG3X     = %08x\n", (BG3X_H<<16)|BG3X_L);
  1.1182 +  printf("BG3Y     = %08x\n", (BG3Y_H<<16)|BG3Y_L);
  1.1183 +}
  1.1184 +
  1.1185 +void debuggerIoDMA()
  1.1186 +{
  1.1187 +  printf("DM0SAD   = %08x\n", (DM0SAD_H<<16)|DM0SAD_L);
  1.1188 +  printf("DM0DAD   = %08x\n", (DM0DAD_H<<16)|DM0DAD_L);
  1.1189 +  printf("DM0CNT   = %08x\n", (DM0CNT_H<<16)|DM0CNT_L);  
  1.1190 +  printf("DM1SAD   = %08x\n", (DM1SAD_H<<16)|DM1SAD_L);
  1.1191 +  printf("DM1DAD   = %08x\n", (DM1DAD_H<<16)|DM1DAD_L);
  1.1192 +  printf("DM1CNT   = %08x\n", (DM1CNT_H<<16)|DM1CNT_L);  
  1.1193 +  printf("DM2SAD   = %08x\n", (DM2SAD_H<<16)|DM2SAD_L);
  1.1194 +  printf("DM2DAD   = %08x\n", (DM2DAD_H<<16)|DM2DAD_L);
  1.1195 +  printf("DM2CNT   = %08x\n", (DM2CNT_H<<16)|DM2CNT_L);  
  1.1196 +  printf("DM3SAD   = %08x\n", (DM3SAD_H<<16)|DM3SAD_L);
  1.1197 +  printf("DM3DAD   = %08x\n", (DM3DAD_H<<16)|DM3DAD_L);
  1.1198 +  printf("DM3CNT   = %08x\n", (DM3CNT_H<<16)|DM3CNT_L);    
  1.1199 +}
  1.1200 +
  1.1201 +void debuggerIoTimer()
  1.1202 +{
  1.1203 +  printf("TM0D     = %04x\n", TM0D);
  1.1204 +  printf("TM0CNT   = %04x\n", TM0CNT);
  1.1205 +  printf("TM1D     = %04x\n", TM1D);
  1.1206 +  printf("TM1CNT   = %04x\n", TM1CNT);
  1.1207 +  printf("TM2D     = %04x\n", TM2D);
  1.1208 +  printf("TM2CNT   = %04x\n", TM2CNT);
  1.1209 +  printf("TM3D     = %04x\n", TM3D);
  1.1210 +  printf("TM3CNT   = %04x\n", TM3CNT);
  1.1211 +}
  1.1212 +
  1.1213 +void debuggerIoMisc()
  1.1214 +{
  1.1215 +  printf("P1       = %04x\n", P1);  
  1.1216 +  printf("IE       = %04x\n", IE);
  1.1217 +  printf("IF       = %04x\n", IF);
  1.1218 +  printf("IME      = %04x\n", IME);
  1.1219 +}
  1.1220 +
  1.1221 +void debuggerIo(int n, char **args)
  1.1222 +{
  1.1223 +  if(n == 1) {
  1.1224 +    debuggerIoVideo();
  1.1225 +    return;
  1.1226 +  }
  1.1227 +  if(!strcmp(args[1], "video"))
  1.1228 +    debuggerIoVideo();
  1.1229 +  else if(!strcmp(args[1], "video2"))
  1.1230 +    debuggerIoVideo2();
  1.1231 +  else if(!strcmp(args[1], "dma"))
  1.1232 +    debuggerIoDMA();
  1.1233 +  else if(!strcmp(args[1], "timer"))
  1.1234 +    debuggerIoTimer();
  1.1235 +  else if(!strcmp(args[1], "misc"))
  1.1236 +    debuggerIoMisc();
  1.1237 +  else printf("Unrecognized option %s\n", args[1]);
  1.1238 +}
  1.1239 +
  1.1240 +void debuggerEditByte(int n, char **args)
  1.1241 +{
  1.1242 +  if(n == 3) {
  1.1243 +    u32 address;
  1.1244 +    u32 byte;
  1.1245 +    sscanf(args[1], "%x", &address);
  1.1246 +    sscanf(args[2], "%x", &byte);
  1.1247 +    debuggerWriteByte(address, (u8)byte);
  1.1248 +  } else
  1.1249 +    debuggerUsage("eb");    
  1.1250 +}
  1.1251 +
  1.1252 +void debuggerEditHalfWord(int n, char **args)
  1.1253 +{
  1.1254 +  if(n == 3) {
  1.1255 +    u32 address;
  1.1256 +    u32 byte;
  1.1257 +    sscanf(args[1], "%x", &address);
  1.1258 +    if(address & 1) {
  1.1259 +      printf("Error: address must be half-word aligned\n");
  1.1260 +      return;
  1.1261 +    }
  1.1262 +    sscanf(args[2], "%x", &byte);
  1.1263 +    debuggerWriteHalfWord(address, (u16)byte);
  1.1264 +  } else
  1.1265 +    debuggerUsage("eh");        
  1.1266 +}
  1.1267 +
  1.1268 +void debuggerEdit(int n, char **args)
  1.1269 +{
  1.1270 +  if(n == 3) {
  1.1271 +    u32 address;
  1.1272 +    u32 byte;
  1.1273 +    sscanf(args[1], "%x", &address);
  1.1274 +    if(address & 3) {
  1.1275 +      printf("Error: address must be word aligned\n");
  1.1276 +      return;
  1.1277 +    }
  1.1278 +    sscanf(args[2], "%x", &byte);
  1.1279 +    debuggerWriteMemory(address, (u32)byte);
  1.1280 +  } else
  1.1281 +    debuggerUsage("ew");    
  1.1282 +}
  1.1283 +
  1.1284 +
  1.1285 +#define ASCII(c) (c) < 32 ? '.' : (c) > 127 ? '.' : (c)
  1.1286 +
  1.1287 +void debuggerMemoryByte(int n, char **args)
  1.1288 +{
  1.1289 +  if(n == 2) {
  1.1290 +    u32 addr = 0;
  1.1291 +    sscanf(args[1], "%x", &addr);
  1.1292 +    for(int ii = 0; ii < 16; ii++) {
  1.1293 +      int a = debuggerReadByte(addr);
  1.1294 +      int b = debuggerReadByte(addr+1);
  1.1295 +      int c = debuggerReadByte(addr+2);
  1.1296 +      int d = debuggerReadByte(addr+3);
  1.1297 +      int e = debuggerReadByte(addr+4);
  1.1298 +      int f = debuggerReadByte(addr+5);
  1.1299 +      int g = debuggerReadByte(addr+6);
  1.1300 +      int h = debuggerReadByte(addr+7);
  1.1301 +      int i = debuggerReadByte(addr+8);
  1.1302 +      int j = debuggerReadByte(addr+9);
  1.1303 +      int k = debuggerReadByte(addr+10);
  1.1304 +      int l = debuggerReadByte(addr+11);
  1.1305 +      int m = debuggerReadByte(addr+12);
  1.1306 +      int n = debuggerReadByte(addr+13);
  1.1307 +      int o = debuggerReadByte(addr+14);
  1.1308 +      int p = debuggerReadByte(addr+15);
  1.1309 +      
  1.1310 +      printf("%08x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c\n",
  1.1311 +             addr,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,
  1.1312 +             ASCII(a),ASCII(b),ASCII(c),ASCII(d),
  1.1313 +             ASCII(e),ASCII(f),ASCII(g),ASCII(h),
  1.1314 +             ASCII(i),ASCII(j),ASCII(k),ASCII(l),
  1.1315 +             ASCII(m),ASCII(n),ASCII(o),ASCII(p));
  1.1316 +      addr += 16;
  1.1317 +    }
  1.1318 +  } else
  1.1319 +    debuggerUsage("mb");    
  1.1320 +}
  1.1321 +
  1.1322 +void debuggerMemoryHalfWord(int n, char **args)
  1.1323 +{
  1.1324 +  if(n == 2) {
  1.1325 +    u32 addr = 0;
  1.1326 +    sscanf(args[1], "%x", &addr);
  1.1327 +    addr = addr & 0xfffffffe;
  1.1328 +    for(int ii = 0; ii < 16; ii++) {
  1.1329 +      int a = debuggerReadByte(addr);
  1.1330 +      int b = debuggerReadByte(addr+1);
  1.1331 +      int c = debuggerReadByte(addr+2);
  1.1332 +      int d = debuggerReadByte(addr+3);
  1.1333 +      int e = debuggerReadByte(addr+4);
  1.1334 +      int f = debuggerReadByte(addr+5);
  1.1335 +      int g = debuggerReadByte(addr+6);
  1.1336 +      int h = debuggerReadByte(addr+7);
  1.1337 +      int i = debuggerReadByte(addr+8);
  1.1338 +      int j = debuggerReadByte(addr+9);
  1.1339 +      int k = debuggerReadByte(addr+10);
  1.1340 +      int l = debuggerReadByte(addr+11);
  1.1341 +      int m = debuggerReadByte(addr+12);
  1.1342 +      int n = debuggerReadByte(addr+13);
  1.1343 +      int o = debuggerReadByte(addr+14);
  1.1344 +      int p = debuggerReadByte(addr+15);
  1.1345 +      
  1.1346 +      printf("%08x %02x%02x %02x%02x %02x%02x %02x%02x %02x%02x %02x%02x %02x%02x %02x%02x %c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c\n",
  1.1347 +             addr,b,a,d,c,f,e,h,g,j,i,l,k,n,m,p,o,
  1.1348 +             ASCII(a),ASCII(b),ASCII(c),ASCII(d),
  1.1349 +             ASCII(e),ASCII(f),ASCII(g),ASCII(h),
  1.1350 +             ASCII(i),ASCII(j),ASCII(k),ASCII(l),
  1.1351 +             ASCII(m),ASCII(n),ASCII(o),ASCII(p));
  1.1352 +      addr += 16;
  1.1353 +    }
  1.1354 +  } else
  1.1355 +    debuggerUsage("mh");    
  1.1356 +}
  1.1357 +
  1.1358 +void debuggerMemory(int n, char **args)
  1.1359 +{
  1.1360 +  if(n == 2) {
  1.1361 +    u32 addr = 0;
  1.1362 +    sscanf(args[1], "%x", &addr);
  1.1363 +    addr = addr & 0xfffffffc;
  1.1364 +    for(int ii = 0; ii < 16; ii++) {
  1.1365 +      int a = debuggerReadByte(addr);
  1.1366 +      int b = debuggerReadByte(addr+1);
  1.1367 +      int c = debuggerReadByte(addr+2);
  1.1368 +      int d = debuggerReadByte(addr+3);
  1.1369 +
  1.1370 +      int e = debuggerReadByte(addr+4);
  1.1371 +      int f = debuggerReadByte(addr+5);
  1.1372 +      int g = debuggerReadByte(addr+6);
  1.1373 +      int h = debuggerReadByte(addr+7);
  1.1374 +
  1.1375 +      int i = debuggerReadByte(addr+8);
  1.1376 +      int j = debuggerReadByte(addr+9);
  1.1377 +      int k = debuggerReadByte(addr+10);
  1.1378 +      int l = debuggerReadByte(addr+11);
  1.1379 +
  1.1380 +      int m = debuggerReadByte(addr+12);
  1.1381 +      int n = debuggerReadByte(addr+13);
  1.1382 +      int o = debuggerReadByte(addr+14);
  1.1383 +      int p = debuggerReadByte(addr+15);
  1.1384 +      
  1.1385 +      printf("%08x %02x%02x%02x%02x %02x%02x%02x%02x %02x%02x%02x%02x %02x%02x%02x%02x %c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c\n",
  1.1386 +             addr,d,c,b,a,h,g,f,e,l,k,j,i,p,o,n,m,
  1.1387 +             ASCII(a),ASCII(b),ASCII(c),ASCII(d),
  1.1388 +             ASCII(e),ASCII(f),ASCII(g),ASCII(h),
  1.1389 +             ASCII(i),ASCII(j),ASCII(k),ASCII(l),
  1.1390 +             ASCII(m),ASCII(n),ASCII(o),ASCII(p));
  1.1391 +      addr += 16;
  1.1392 +    }
  1.1393 +  } else
  1.1394 +    debuggerUsage("mw");    
  1.1395 +}
  1.1396 +
  1.1397 +void debuggerQuit(int, char **)
  1.1398 +{
  1.1399 +  char buffer[10];
  1.1400 +  printf("Are you sure you want to quit (y/n)? ");
  1.1401 +  fgets(buffer, 1024, stdin);
  1.1402 +  
  1.1403 +  if(buffer[0] == 'y' || buffer[0] == 'Y') {
  1.1404 +    debugger = false;
  1.1405 +    emulating = false;
  1.1406 +  }
  1.1407 +}
  1.1408 +
  1.1409 +void debuggerOutput(char *s, u32 addr)
  1.1410 +{
  1.1411 +  if(s)
  1.1412 +    puts(s);
  1.1413 +  else {
  1.1414 +    char c;
  1.1415 +
  1.1416 +    c = debuggerReadByte(addr);
  1.1417 +    addr++;
  1.1418 +    while(c) {
  1.1419 +      putchar(c);
  1.1420 +      c = debuggerReadByte(addr);
  1.1421 +      addr++;
  1.1422 +    }
  1.1423 +  }
  1.1424 +}
  1.1425 +
  1.1426 +void debuggerMain()
  1.1427 +{
  1.1428 +  char buffer[1024];
  1.1429 +  char *commands[10];
  1.1430 +  int commandCount = 0;
  1.1431 +  
  1.1432 +  if(theEmulator.emuUpdateCPSR)
  1.1433 +    theEmulator.emuUpdateCPSR();
  1.1434 +  debuggerRegisters(0, NULL);
  1.1435 +  
  1.1436 +  while(debugger) {
  1.1437 +    systemSoundPause();
  1.1438 +    printf("debugger> ");
  1.1439 +    commandCount = 0;
  1.1440 +    char *s = fgets(buffer, 1024, stdin);
  1.1441 +
  1.1442 +    commands[0] = strtok(s, " \t\n");
  1.1443 +    if(commands[0] == NULL)
  1.1444 +      continue;
  1.1445 +    commandCount++;
  1.1446 +    while((s = strtok(NULL, " \t\n"))) {
  1.1447 +      commands[commandCount++] = s;
  1.1448 +      if(commandCount == 10)
  1.1449 +        break;
  1.1450 +    }
  1.1451 +
  1.1452 +    for(int j = 0; ; j++) {
  1.1453 +      if(debuggerCommands[j].name == NULL) {
  1.1454 +        printf("Unrecognized command %s. Type h for help.\n", commands[0]);
  1.1455 +        break;
  1.1456 +      }
  1.1457 +      if(!strcmp(commands[0], debuggerCommands[j].name)) {
  1.1458 +        debuggerCommands[j].function(commandCount, commands);
  1.1459 +        break;
  1.1460 +      }
  1.1461 +    } 
  1.1462 +  }
  1.1463 +}