Mercurial > vba-linux

     1 #include <cstdlib>

     2 #include <cstdio>

     3 #include <cstring>

     4 

     5 #ifndef WIN32

     6 # include <unistd.h>

     7 # include <sys/socket.h>

     8 # include <netdb.h>

     9 # ifdef HAVE_NETINET_IN_H

    10 #  include <netinet/in.h>

    11 # endif // HAVE_NETINET_IN_H

    12 # ifdef HAVE_ARPA_INET_H

    13 #  include <arpa/inet.h>

    14 # else // ! HAVE_ARPA_INET_H

    15 #  define socklen_t int

    16 # endif // ! HAVE_ARPA_INET_H

    17 #else // WIN32

    18 # include "../win32/stdafx.h"

    19 # include <winsock.h>

    20 # include <io.h>

    21 # define socklen_t int

    22 # define close closesocket

    23 # define read _read

    24 # define write _write

    25 #endif // WIN32

    26 

    27 #include "GBA.h"

    28 #include "GBAGlobals.h"

    29 

    30 extern bool debugger;

    31 extern void CPUUpdateCPSR();

    32 #ifdef SDL

    33 extern void (*dbgMain)();

    34 extern void (*dbgSignal)(int, int);

    35 extern void debuggerMain();

    36 extern void debuggerSignal(int, int);

    37 #endif

    38 

    39 int  remotePort         = 55555;

    40 int  remoteSignal       = 5;

    41 int  remoteSocket       = -1;

    42 int  remoteListenSocket = -1;

    43 bool remoteConnected    = false;

    44 bool remoteResumed      = false;

    45 

    46 int  (*remoteSendFnc)(char *, int) = NULL;

    47 int  (*remoteRecvFnc)(char *, int) = NULL;

    48 bool (*remoteInitFnc)()    = NULL;

    49 void (*remoteCleanUpFnc)() = NULL;

    50 

    51 #if (defined WIN32 && !defined SDL)

    52 void remoteSetSockets(SOCKET l, SOCKET r)

    53 {

    54   remoteSocket       = r;

    55   remoteListenSocket = l;

    56 }

    57 

    58 #endif

    59 

    60 int remoteTcpSend(char *data, int len)

    61 {

    62   return send(remoteSocket, data, len, 0);

    63 }

    64 

    65 int remoteTcpRecv(char *data, int len)

    66 {

    67   return recv(remoteSocket, data, len, 0);

    68 }

    69 

    70 bool remoteTcpInit()

    71 {

    72   if (remoteSocket == -1)

    73     {

    74 #ifdef WIN32

    75       WSADATA wsaData;

    76       int     error = WSAStartup(MAKEWORD(1, 1), &wsaData);

    77 #endif // WIN32

    78       int s = socket(PF_INET, SOCK_STREAM, 0);

    79 

    80       remoteListenSocket = s;

    81 

    82       if (s < 0)

    83 	{

    84 	  fprintf(stderr, "Error opening socket\n");

    85 	  exit(-1);

    86 	}

    87       int tmp = 1;

    88       setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, sizeof(tmp));

    89 

    90       //    char hostname[256];

    91       //    gethostname(hostname, 256);

    92 

    93       //    hostent *ent = gethostbyname(hostname);

    94       //    unsigned long a = *((unsigned long *)ent->h_addr);

    95 

    96       sockaddr_in addr;

    97       addr.sin_family      = AF_INET;

    98       addr.sin_port        = htons(remotePort);

    99       addr.sin_addr.s_addr = htonl(0);

   100       int count = 0;

   101       while (count < 3)

   102 	{

   103 	  if (bind(s, (sockaddr *)&addr, sizeof(addr)))

   104 	    {

   105 	      addr.sin_port = htons(ntohs(addr.sin_port)+1);

   106 	    }

   107 	  else

   108 	    break;

   109 	}

   110       if (count == 3)

   111 	{

   112 	  fprintf(stderr, "Error binding \n");

   113 	  exit(-1);

   114 	}

   115 

   116       fprintf(stderr, "Listening for a connection at port %d\n",

   117 	      ntohs(addr.sin_port));

   118 

   119       if (listen(s, 1))

   120 	{

   121 	  fprintf(stderr, "Error listening\n");

   122 	  exit(-1);

   123 	}

   124 

   125 

   126 #ifdef WIN32

   127       int flag = 0;

   128       ioctlsocket(s, FIONBIO, (unsigned long *)&flag);

   129 #endif // WIN32

   130 

   131       socklen_t len = sizeof(addr);

   132 

   133       int s2 = accept(s, (sockaddr *)&addr, &len);

   134       if (s2 > 0)

   135 	{

   136 	  fprintf(stderr, "Got a connection from %s %d\n",

   137 		  inet_ntoa((in_addr)addr.sin_addr),

   138 		  ntohs(addr.sin_port));

   139 	}

   140       else

   141 	{

   142 #ifdef WIN32

   143 	  int error = WSAGetLastError();

   144 #endif // WIN32

   145 	}

   146       char dummy;

   147       recv(s2, &dummy, 1, 0);

   148       if (dummy != '+')

   149 	{

   150 	  fprintf(stderr, "ACK not received\n");

   151 	  exit(-1);

   152 	}

   153       remoteSocket = s2;

   154       //    close(s);

   155     }

   156   return true;

   157 }

   158 

   159 void remoteTcpCleanUp()

   160 {

   161   if (remoteSocket > 0)

   162     {

   163       fprintf(stderr, "Closing remote socket\n");

   164       close(remoteSocket);

   165       remoteSocket = -1;

   166     }

   167   if (remoteListenSocket > 0)

   168     {

   169       fprintf(stderr, "Closing listen socket\n");

   170       close(remoteListenSocket);

   171       remoteListenSocket = -1;

   172     }

   173 }

   174 

   175 int remotePipeSend(char *data, int len)

   176 {

   177   int res = write(1, data, len);

   178   return res;

   179 }

   180 

   181 int remotePipeRecv(char *data, int len)

   182 {

   183   int res = read(0, data, len);

   184   return res;

   185 }

   186 

   187 bool remotePipeInit()

   188 {

   189   char dummy;

   190   read(0, &dummy, 1);

   191   if (dummy != '+')

   192     {

   193       fprintf(stderr, "ACK not received\n");

   194       exit(-1);

   195     }

   196 

   197   return true;

   198 }

   199 

   200 void remotePipeCleanUp()

   201 {}

   202 

   203 void remoteSetPort(int port)

   204 {

   205   remotePort = port;

   206 }

   207 

   208 void remoteSetProtocol(int p)

   209 {

   210   if (p == 0)

   211     {

   212       remoteSendFnc    = remoteTcpSend;

   213       remoteRecvFnc    = remoteTcpRecv;

   214       remoteInitFnc    = remoteTcpInit;

   215       remoteCleanUpFnc = remoteTcpCleanUp;

   216     }

   217   else

   218     {

   219       remoteSendFnc    = remotePipeSend;

   220       remoteRecvFnc    = remotePipeRecv;

   221       remoteInitFnc    = remotePipeInit;

   222       remoteCleanUpFnc = remotePipeCleanUp;

   223     }

   224 }

   225 

   226 void remoteInit()

   227 {

   228   if (remoteInitFnc)

   229     remoteInitFnc();

   230 }

   231 

   232 void remotePutPacket(char *packet)

   233 {

   234   char *hex = "0123456789abcdef";

   235   char  buffer[1024];

   236 

   237   int count = strlen(packet);

   238 

   239   unsigned char csum = 0;

   240 

   241   char *p = buffer;

   242   *p++ = '$';

   243 

   244   for (int i = 0; i < count; i++)

   245     {

   246       csum += packet[i];

   247       *p++  = packet[i];

   248     }

   249   *p++ = '#';

   250   *p++ = hex[csum>>4];

   251   *p++ = hex[csum & 15];

   252   *p++ = 0;

   253   //  printf("Sending %s\n", buffer);

   254   remoteSendFnc(buffer, count + 4);

   255 

   256   char c = 0;

   257   remoteRecvFnc(&c, 1);

   258   /*

   259     if(c == '+')

   260     printf("ACK\n");

   261     else if(c=='-')

   262     printf("NACK\n");

   263   */

   264 }

   265 

   266 void remoteOutput(char *s, u32 addr)

   267 {

   268   char buffer[16384];

   269 

   270   char *d = buffer;

   271   *d++ = 'O';

   272 

   273   if (s)

   274     {

   275       char c = *s++;

   276       while (c)

   277 	{

   278 	  sprintf(d, "%02x", c);

   279 	  d += 2;

   280 	  c  = *s++;

   281 	}

   282     }

   283   else

   284     {

   285       char c = debuggerReadByte(addr);

   286       addr++;

   287       while (c)

   288 	{

   289 	  sprintf(d, "%02x", c);

   290 	  d += 2;

   291 	  c  = debuggerReadByte(addr);

   292 	  addr++;

   293 	}

   294     }

   295   remotePutPacket(buffer);

   296   //  fprintf(stderr, "Output sent %s\n", buffer);

   297 }

   298 

   299 void remoteSendSignal()

   300 {

   301   char buffer[1024];

   302   sprintf(buffer, "S%02x", remoteSignal);

   303   remotePutPacket(buffer);

   304 }

   305 

   306 void remoteSendStatus()

   307 {

   308   char buffer[1024];

   309   sprintf(buffer, "T%02x", remoteSignal);

   310   char *s = buffer;

   311   s += 3;

   312   for (int i = 0; i < 15; i++)

   313     {

   314       u32 v = reg[i].I;

   315       sprintf(s, "%02x:%02x%02x%02x%02x;", i,

   316 	      (v & 255),

   317 	      (v >> 8) & 255,

   318 	      (v >> 16) & 255,

   319 	      (v >> 24) & 255);

   320       s += 12;

   321     }

   322   u32 v = armNextPC;

   323   sprintf(s, "0f:%02x%02x%02x%02x;", (v & 255),

   324 	  (v >> 8) & 255,

   325 	  (v >> 16) & 255,

   326 	  (v >> 24) & 255);

   327   s += 12;

   328   CPUUpdateCPSR();

   329   v = reg[16].I;

   330   sprintf(s, "19:%02x%02x%02x%02x;", (v & 255),

   331 	  (v >> 8) & 255,

   332 	  (v >> 16) & 255,

   333 	  (v >> 24) & 255);

   334   s += 12;

   335   *s = 0;

   336   //  printf("Sending %s\n", buffer);

   337   remotePutPacket(buffer);

   338 }

   339 

   340 void remoteBinaryWrite(char *p)

   341 {

   342   u32 address;

   343   int count;

   344   sscanf(p, "%x,%x:", &address, &count);

   345   //  printf("Binary write for %08x %d\n", address, count);

   346 

   347   p = strchr(p, ':');

   348   p++;

   349   for (int i = 0; i < count; i++)

   350     {

   351       u8 b = *p++;

   352       switch (b)

   353 	{

   354 	case 0x7d:

   355 	  b = *p++;

   356 	  debuggerWriteByte(address, (b^0x20));

   357 	  address++;

   358 	  break;

   359 	default:

   360 	  debuggerWriteByte(address, b);

   361 	  address++;

   362 	  break;

   363 	}

   364     }

   365   //  printf("ROM is %08x\n", debuggerReadMemory(0x8000254));

   366   remotePutPacket("OK");

   367 }

   368 

   369 void remoteMemoryWrite(char *p)

   370 {

   371   u32 address;

   372   int count;

   373   sscanf(p, "%x,%x:", &address, &count);

   374   //  printf("Memory write for %08x %d\n", address, count);

   375 

   376   p = strchr(p, ':');

   377   p++;

   378   for (int i = 0; i < count; i++)

   379     {

   380       u8   v = 0;

   381       char c = *p++;

   382       if (c <= '9')

   383 	v = (c - '0') << 4;

   384       else

   385 	v = (c + 10 - 'a') << 4;

   386       c = *p++;

   387       if (c <= '9')

   388 	v += (c - '0');

   389       else

   390 	v += (c + 10 - 'a');

   391       debuggerWriteByte(address, v);

   392       address++;

   393     }

   394   //  printf("ROM is %08x\n", debuggerReadMemory(0x8000254));

   395   remotePutPacket("OK");

   396 }

   397 

   398 void remoteMemoryRead(char *p)

   399 {

   400   u32 address;

   401   int count;

   402   sscanf(p, "%x,%x:", &address, &count);

   403   //  printf("Memory read for %08x %d\n", address, count);

   404 

   405   char buffer[1024];

   406 

   407   char *s = buffer;

   408   for (int i = 0; i < count; i++)

   409     {

   410       u8 b = debuggerReadByte(address);

   411       sprintf(s, "%02x", b);

   412       address++;

   413       s += 2;

   414     }

   415   *s = 0;

   416   remotePutPacket(buffer);

   417 }

   418 

   419 void remoteStepOverRange(char *p)

   420 {

   421   u32 address;

   422   u32 final;

   423   sscanf(p, "%x,%x", &address, &final);

   424 

   425   remotePutPacket("OK");

   426 

   427   remoteResumed = true;

   428   do

   429     {

   430       CPULoop(1);

   431       if (debugger)

   432 	break;

   433     }

   434   while (armNextPC >= address && armNextPC < final);

   435 

   436   remoteResumed = false;

   437 

   438   remoteSendStatus();

   439 }

   440 

   441 void remoteWriteWatch(char *p, bool active)

   442 {

   443   u32 address;

   444   int count;

   445   sscanf(p, ",%x,%x#", &address, &count);

   446 

   447   fprintf(stderr, "Write watch for %08x %d\n", address, count);

   448 

   449   if (address < 0x2000000 || address > 0x3007fff)

   450     {

   451       remotePutPacket("E01");

   452       return;

   453     }

   454 

   455   if (address > 0x203ffff && address < 0x3000000)

   456     {

   457       remotePutPacket("E01");

   458       return;

   459     }

   460 

   461   u32 final = address + count;

   462 

   463   if (address < 0x2040000 && final > 0x2040000)

   464     {

   465       remotePutPacket("E01");

   466       return;

   467     }

   468   else if (address < 0x3008000 && final > 0x3008000)

   469     {

   470       remotePutPacket("E01");

   471       return;

   472     }

   473 

   474   for (int i = 0; i < count; i++)

   475     {

   476       if ((address >> 24) == 2)

   477 	freezeWorkRAM[address & 0x3ffff] = active;

   478       else

   479 	freezeInternalRAM[address & 0x7fff] = active;

   480       address++;

   481     }

   482 

   483   remotePutPacket("OK");

   484 }

   485 

   486 void remoteReadRegisters(char *p)

   487 {

   488   char buffer[1024];

   489 

   490   char *s = buffer;

   491   int   i;

   492   // regular registers

   493   for (i = 0; i < 15; i++)

   494     {

   495       u32 v = reg[i].I;

   496       sprintf(s, "%02x%02x%02x%02x",  v & 255, (v >> 8) & 255,

   497 	      (v >> 16) & 255, (v >> 24) & 255);

   498       s += 8;

   499     }

   500   // PC

   501   u32 pc = armNextPC;

   502   sprintf(s, "%02x%02x%02x%02x", pc & 255, (pc >> 8) & 255,

   503 	  (pc >> 16) & 255, (pc >> 24) & 255);

   504   s += 8;

   505 

   506   // floating point registers (24-bit)

   507   for (i = 0; i < 8; i++)

   508     {

   509       sprintf(s, "000000000000000000000000");

   510       s += 24;

   511     }

   512 

   513   // FP status register

   514   sprintf(s, "00000000");

   515   s += 8;

   516   // CPSR

   517   CPUUpdateCPSR();

   518   u32 v = reg[16].I;

   519   sprintf(s, "%02x%02x%02x%02x",  v & 255, (v >> 8) & 255,

   520 	  (v >> 16) & 255, (v >> 24) & 255);

   521   s += 8;

   522   *s = 0;

   523   remotePutPacket(buffer);

   524 }

   525 

   526 void remoteWriteRegister(char *p)

   527 {

   528   int r;

   529 

   530   sscanf(p, "%x=", &r);

   531 

   532   p = strchr(p, '=');

   533   p++;

   534 

   535   char c = *p++;

   536 

   537   u32 v = 0;

   538 

   539   u8 data[4] = {0, 0, 0, 0};

   540 

   541   int i = 0;

   542 

   543   while (c != '#')

   544     {

   545       u8 b = 0;

   546       if (c <= '9')

   547 	b = (c - '0') << 4;

   548       else

   549 	b = (c + 10 - 'a') << 4;

   550       c = *p++;

   551       if (c <= '9')

   552 	b += (c - '0');

   553       else

   554 	b += (c + 10 - 'a');

   555       data[i++] = b;

   556       c         = *p++;

   557     }

   558 

   559   v = data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);

   560 

   561   //  printf("Write register %d=%08x\n", r, v);

   562   reg[r].I = v;

   563   if (r == 15)

   564     {

   565       armNextPC = v;

   566       if (armState)

   567 	reg[15].I = v + 4;

   568       else

   569 	reg[15].I = v + 2;

   570     }

   571   remotePutPacket("OK");

   572 }

   573 

   574 void remoteStubMain()

   575 {

   576   if (!debugger)

   577     return;

   578 

   579   if (remoteResumed)

   580     {

   581       remoteSendStatus();

   582       remoteResumed = false;

   583     }

   584 

   585   while (true)

   586     {

   587       char buffer[1024];

   588       int  res = remoteRecvFnc(buffer, 1024);

   589 

   590       if (res == -1)

   591 	{

   592 	  fprintf(stderr, "GDB connection lost\n");

   593 #ifdef SDL

   594 	  dbgMain   = debuggerMain;

   595 	  dbgSignal = debuggerSignal;

   596 #endif

   597 	  debugger = false;

   598 	  break;

   599 	}

   600 

   601       //    fprintf(stderr, "Received %s\n", buffer);

   602       char *p  = buffer;

   603       char  c  = *p++;

   604       char  pp = '+';

   605       remoteSendFnc(&pp, 1);

   606 

   607       if (c != '$')

   608 	continue;

   609       c = *p++;

   610       switch (c)

   611 	{

   612 	case '?':

   613 	  remoteSendSignal();

   614 	  break;

   615 	case 'D':

   616 	  remotePutPacket("OK");

   617 #ifdef SDL

   618 	  dbgMain   = debuggerMain;

   619 	  dbgSignal = debuggerSignal;

   620 #endif

   621 	  remoteResumed = true;

   622 	  debugger      = false;

   623 	  return;

   624 	case 'e':

   625 	  remoteStepOverRange(p);

   626 	  break;

   627 	case 'k':

   628 	  remotePutPacket("OK");

   629 #ifdef SDL

   630 	  dbgMain   = debuggerMain;

   631 	  dbgSignal = debuggerSignal;

   632 #endif

   633 	  debugger  = false;

   634 	  emulating = false;

   635 	  return;

   636 	case 'C':

   637 	  remoteResumed = true;

   638 	  debugger      = false;

   639 	  return;

   640 	case 'c':

   641 	  remoteResumed = true;

   642 	  debugger      = false;

   643 	  return;

   644 	case 's':

   645 	  remoteResumed = true;

   646 	  remoteSignal  = 5;

   647 	  CPULoop(1);

   648 	  if (remoteResumed)

   649 	    {

   650 	      remoteResumed = false;

   651 	      remoteSendStatus();

   652 	    }

   653 	  break;

   654 	case 'g':

   655 	  remoteReadRegisters(p);

   656 	  break;

   657 	case 'P':

   658 	  remoteWriteRegister(p);

   659 	  break;

   660 	case 'M':

   661 	  remoteMemoryWrite(p);

   662 	  break;

   663 	case 'm':

   664 	  remoteMemoryRead(p);

   665 	  break;

   666 	case 'X':

   667 	  remoteBinaryWrite(p);

   668 	  break;

   669 	case 'H':

   670 	  remotePutPacket("OK");

   671 	  break;

   672 	case 'q':

   673 	  remotePutPacket("");

   674 	  break;

   675 	case 'Z':

   676 	  if (*p++ == '2')

   677 	    {

   678 	      remoteWriteWatch(p, true);

   679 	    }

   680 	  else

   681 	    remotePutPacket("");

   682 	  break;

   683 	case 'z':

   684 	  if (*p++ == '2')

   685 	    {

   686 	      remoteWriteWatch(p, false);

   687 	    }

   688 	  else

   689 	    remotePutPacket("");

   690 	  break;

   691 	default:

   692 	  {

   693 	    *(strchr(p, '#') + 3) = 0;

   694 	    fprintf(stderr, "Unknown packet %s\n", --p);

   695 	    remotePutPacket("");

   696 	    break;

   697 	  }

   698 	}

   699     }

   700 }

   701 

   702 void remoteStubSignal(int sig, int number)

   703 {

   704   remoteSignal  = sig;

   705   remoteResumed = false;

   706   remoteSendStatus();

   707   debugger = true;

   708 }

   709 

   710 void remoteCleanUp()

   711 {

   712   if (remoteCleanUpFnc)

   713     remoteCleanUpFnc();

   714 }

   715
author	Robert McIntyre <rlm@mit.edu>
date	Sun, 04 Mar 2012 16:56:20 -0600
parents	ecd30c5e2f5a
children	8870086b716c