gdb/remote-udi.c

   1 /* Remote debugging interface for AMD 29k interfaced via UDI, for GDB.
   2    Copyright 1990, 1992 Free Software Foundation, Inc.
   3    Written by Daniel Mann.  Contributed by AMD.
   4
   5 This file is part of GDB.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21 /* This is like remote.c but uses the Universal Debug Interface (UDI) to
  22    talk to the target hardware (or simulator).  UDI is a TCP/IP based
  23    protocol; for hardware that doesn't run TCP, an interface adapter
  24    daemon talks UDI on one side, and talks to the hardware (typically
  25    over a serial port) on the other side.
  26
  27  - Originally written by Daniel Mann at AMD for MiniMON and gdb 3.91.6.
  28  - David Wood (wood@lab.ultra.nyu.edu) at New York University adapted this
  29         file to gdb 3.95.  I was unable to get this working on sun3os4
  30         with termio, only with sgtty.
  31  - Daniel Mann at AMD took the 3.95 adaptions above and replaced
  32         MiniMON interface with UDI-p interface.   */
  33
  34 #include "defs.h"
  35 #include "frame.h"
  36 #include "inferior.h"
  37 #include "wait.h"
  38 #include "value.h"
  39 #include <ctype.h>
  40 #include <fcntl.h>
  41 #include <signal.h>
  42 #include <errno.h>
  43 #include <string.h>
  44 #include "terminal.h"
  45 #include "target.h"
  46 #include "29k-share/udi/udiproc.h"
  47 #include "gdbcmd.h"
  48 #include "bfd.h"
  49 #include "gdbcore.h" /* For download function */
  50
  51 /* access the register store directly, without going through
  52    the normal handler functions. This avoids an extra data copy.  */
  53
  54 extern int stop_soon_quietly;           /* for wait_for_inferior */
  55 extern struct value *call_function_by_hand();
  56 static void udi_resume PARAMS ((int pid, int step, enum target_signal sig));
  57 static void udi_fetch_registers PARAMS ((int regno));
  58 static void udi_load PARAMS ((char *args, int from_tty));
  59 static void fetch_register PARAMS ((int regno));
  60 static void udi_store_registers PARAMS ((int regno));
  61 static int store_register PARAMS ((int regno));
  62 static int regnum_to_srnum PARAMS ((int regno));
  63 static void udi_close PARAMS ((int quitting));
  64 static CPUSpace udi_memory_space PARAMS ((CORE_ADDR addr));
  65 static int udi_write_inferior_memory PARAMS ((CORE_ADDR memaddr, char *myaddr,
  66                                               int len));
  67 static int udi_read_inferior_memory PARAMS ((CORE_ADDR memaddr, char *myaddr,
  68                                              int len));
  69 static void download PARAMS ((char *load_arg_string, int from_tty));
  70 char   CoffFileName[100] = "";
  71
  72 #define FREEZE_MODE     (read_register(CPS_REGNUM) & 0x400)
  73 #define USE_SHADOW_PC   ((processor_type == a29k_freeze_mode) && FREEZE_MODE)
  74
  75 static int timeout = 5;
  76 extern struct target_ops udi_ops;             /* Forward declaration */
  77
  78 /* Special register enumeration.
  79 */
  80
  81 /******************************************************************* UDI DATA*/
  82 #define MAXDATA         2*1024          /* max UDI[read/write] byte size */
  83 /* Descriptor for I/O to remote machine.  Initialize it to -1 so that
  84    udi_open knows that we don't have a file open when the program
  85    starts.  */
  86
  87 UDISessionId udi_session_id = -1;
  88 static char *udi_config_id;
  89
  90 CPUOffset IMemStart = 0;
  91 CPUSizeT IMemSize = 0;
  92 CPUOffset DMemStart = 0;
  93 CPUSizeT DMemSize = 0;
  94 CPUOffset RMemStart = 0;
  95 CPUSizeT RMemSize = 0;
  96 UDIUInt32 CPUPRL;
  97 UDIUInt32 CoProcPRL;
  98
  99 UDIMemoryRange address_ranges[2]; /* Text and data */
 100 UDIResource entry = {0, 0};     /* Entry point */
 101 CPUSizeT stack_sizes[2];        /* Regular and memory stacks */
 102
 103 #define SBUF_MAX        1024    /* maximum size of string handling buffer */
 104 char sbuf[SBUF_MAX];
 105
 106 typedef struct  bkpt_entry_str
 107 {
 108     UDIResource  Addr;
 109     UDIUInt32    PassCount;
 110     UDIBreakType Type;
 111     unsigned int BreakId;
 112 } bkpt_entry_t;
 113 #define         BKPT_TABLE_SIZE 40
 114 static bkpt_entry_t     bkpt_table[BKPT_TABLE_SIZE];
 115 extern  char    dfe_errmsg[];           /* error string */
 116
 117 /* malloc'd name of the program on the remote system.  */
 118 static char *prog_name = NULL;
 119
 120 /* This is called not only when we first attach, but also when the
 121    user types "run" after having attached.  */
 122
 123 static void
 124 udi_create_inferior (execfile, args, env)
 125      char *execfile;
 126      char *args;
 127      char **env;
 128 {
 129   char *args1;
 130
 131   if (execfile)
 132     {
 133       if (prog_name != NULL)
 134         free (prog_name);
 135       prog_name = savestring (execfile, strlen (execfile));
 136     }
 137   else if (entry.Offset)
 138     execfile = "";
 139   else
 140     error ("No image loaded into target.");
 141
 142   if (udi_session_id < 0)
 143     {
 144       /* If the TIP is not open, open it.  */
 145       if (UDIConnect (udi_config_id, &udi_session_id))
 146         error("UDIConnect() failed: %s\n", dfe_errmsg);
 147       /* We will need to download the program.  */
 148       entry.Offset = 0;
 149     }
 150
 151   inferior_pid = 40000;
 152
 153   if (!entry.Offset)
 154     download(execfile, 0);
 155
 156   args1 = alloca (strlen(execfile) + strlen(args) + 2);
 157
 158   if (execfile[0] == '\0')
 159
 160     /* It is empty.  We need to quote it somehow, or else the target
 161        will think there is no argument being passed here.  According
 162        to the UDI spec it is quoted "according to TIP OS rules" which
 163        I guess means quoting it like the Unix shell should work
 164        (sounds pretty bogus to me...).  In fact it doesn't work (with
 165        isstip anyway), but passing in two quotes as the argument seems
 166        like a reasonable enough behavior anyway (I guess).  */
 167
 168     strcpy (args1, "''");
 169   else
 170     strcpy (args1, execfile);
 171   strcat (args1, " ");
 172   strcat (args1, args);
 173
 174   UDIInitializeProcess (address_ranges,         /* ProcessMemory[] */
 175                         (UDIInt)2,              /* NumberOfRanges */
 176                         entry,                  /* EntryPoint */
 177                         stack_sizes,            /* *StackSizes */
 178                         (UDIInt)2,              /* NumberOfStacks */
 179                         args1);                 /* ArgString */
 180
 181   init_wait_for_inferior ();
 182   clear_proceed_status ();
 183   proceed (-1, TARGET_SIGNAL_DEFAULT, 0);
 184 }
 185
 186 static void
 187 udi_mourn()
 188 {
 189 #if 0
 190   /* Requiring "target udi" each time you run is a major pain.  I suspect
 191      this was just blindy copied from remote.c, in which "target" and
 192      "run" are combined.  Having a udi target without an inferior seems
 193      to work between "target udi" and "run", so why not now?  */
 194   pop_target ();                /* Pop back to no-child state */
 195 #endif
 196   /* But if we're going to want to run it again, we better remove the
 197      breakpoints...  */
 198   remove_breakpoints ();
 199   generic_mourn_inferior ();
 200 }
 201
 202 /******************************************************************** UDI_OPEN
 203 ** Open a connection to remote TIP.
 204    NAME is the socket domain used for communication with the TIP,
 205    then a space and the socket name or TIP-host name.
 206    '<udi_udi_config_id>' for example.
 207  */
 208
 209 /* XXX - need cleanups for udiconnect for various failures!!! */
 210
 211 static void
 212 udi_open (name, from_tty)
 213      char *name;
 214      int from_tty;
 215 {
 216   unsigned int prl;
 217   char *p;
 218   int cnt;
 219   UDIMemoryRange KnownMemory[10];
 220   UDIUInt32 ChipVersions[10];
 221   UDIInt NumberOfRanges = 10;
 222   UDIInt NumberOfChips = 10;
 223   UDIPId PId;
 224   UDIUInt32 TIPId, TargetId, DFEId, DFE, TIP, DFEIPCId, TIPIPCId;
 225
 226   target_preopen(from_tty);
 227
 228   entry.Offset = 0;
 229
 230   for (cnt = 0; cnt < BKPT_TABLE_SIZE; cnt++)
 231     bkpt_table[cnt].Type = 0;
 232
 233   if (udi_config_id)
 234     free (udi_config_id);
 235
 236   if (!name)
 237     error("Usage: target udi config_id, where config_id appears in udi_soc file");
 238
 239   udi_config_id = strdup (strtok (name, " \t"));
 240
 241   if (UDIConnect (udi_config_id, &udi_session_id))
 242     /* FIXME: Should set udi_session_id to -1 here.  */
 243     error("UDIConnect() failed: %s\n", dfe_errmsg);
 244
 245   push_target (&udi_ops);
 246
 247   /*
 248   ** Initialize target configuration structure (global)
 249   */
 250   if (UDIGetTargetConfig (KnownMemory, &NumberOfRanges,
 251                           ChipVersions, &NumberOfChips))
 252     error ("UDIGetTargetConfig() failed");
 253   if (NumberOfChips > 2)
 254     fprintf_unfiltered(gdb_stderr,"Target has more than one processor\n");
 255   for (cnt=0; cnt < NumberOfRanges; cnt++)
 256     {
 257       switch(KnownMemory[cnt].Space)
 258         {
 259         default:
 260           fprintf_unfiltered(gdb_stderr, "UDIGetTargetConfig() unknown memory space\n");
 261           break;
 262         case UDI29KCP_S:
 263           break;
 264         case UDI29KIROMSpace:
 265           RMemStart = KnownMemory[cnt].Offset;
 266           RMemSize = KnownMemory[cnt].Size;
 267           break;
 268         case UDI29KIRAMSpace:
 269           IMemStart = KnownMemory[cnt].Offset;
 270           IMemSize = KnownMemory[cnt].Size;
 271           break;
 272         case UDI29KDRAMSpace:
 273           DMemStart = KnownMemory[cnt].Offset;
 274           DMemSize = KnownMemory[cnt].Size;
 275           break;
 276         }
 277     }
 278
 279   a29k_get_processor_type ();
 280
 281   if (UDICreateProcess (&PId))
 282      fprintf_unfiltered(gdb_stderr, "UDICreateProcess() failed\n");
 283
 284   /* Print out some stuff, letting the user now what's going on */
 285   if (UDICapabilities (&TIPId, &TargetId, DFEId, DFE, &TIP, &DFEIPCId,
 286                        &TIPIPCId, sbuf))
 287     error ("UDICapabilities() failed");
 288   if (from_tty)
 289     {
 290       printf_filtered ("Connected via UDI socket,\n\
 291  DFE-IPC version %x.%x.%x  TIP-IPC version %x.%x.%x  TIP version %x.%x.%x\n %s\n",
 292                        (DFEIPCId>>8)&0xf, (DFEIPCId>>4)&0xf, DFEIPCId&0xf,
 293                        (TIPIPCId>>8)&0xf, (TIPIPCId>>4)&0xf, TIPIPCId&0xf,
 294                        (TargetId>>8)&0xf, (TargetId>>4)&0xf, TargetId&0xf,
 295                        sbuf);
 296     }
 297 }
 298
 299 /******************************************************************* UDI_CLOSE
 300    Close the open connection to the TIP process.
 301    Use this when you want to detach and do something else
 302    with your gdb.  */
 303 static void
 304 udi_close (quitting)    /*FIXME: how is quitting used */
 305      int quitting;
 306 {
 307   if (udi_session_id < 0)
 308     return;
 309
 310   /* We should never get here if there isn't something valid in
 311      udi_session_id.  */
 312
 313   if (UDIDisconnect (udi_session_id, UDITerminateSession))
 314     {
 315       if (quitting)
 316         warning ("UDIDisconnect() failed in udi_close");
 317       else
 318         error ("UDIDisconnect() failed in udi_close");
 319     }
 320
 321   /* Do not try to close udi_session_id again, later in the program.  */
 322   udi_session_id = -1;
 323   inferior_pid = 0;
 324
 325   printf_filtered ("  Ending remote debugging\n");
 326 }
 327
 328 /**************************************************************** UDI_ATACH */
 329 /* Attach to a program that is already loaded and running
 330  * Upon exiting the process's execution is stopped.
 331  */
 332 static void
 333 udi_attach (args, from_tty)
 334      char *args;
 335      int from_tty;
 336 {
 337   UDIResource   From;
 338   UDIInt32      PC_adds;
 339   UDICount      Count = 1;
 340   UDISizeT      Size = 4;
 341   UDICount      CountDone;
 342   UDIBool       HostEndian = 0;
 343   UDIError      err;
 344
 345   if (args == NULL)
 346     error_no_arg ("program to attach");
 347
 348   if (udi_session_id < 0)
 349       error ("UDI connection not opened yet, use the 'target udi' command.\n");
 350
 351   if (from_tty)
 352       printf_unfiltered ("Attaching to remote program %s...\n", prog_name);
 353
 354   UDIStop();
 355   From.Space = UDI29KSpecialRegs;
 356   From.Offset = 11;
 357   if (err = UDIRead(From, &PC_adds, Count, Size, &CountDone, HostEndian))
 358     error ("UDIRead failed in udi_attach");
 359   printf_unfiltered ("Remote process is now halted, pc1 = 0x%x.\n", PC_adds);
 360 }
 361 /************************************************************* UDI_DETACH */
 362 /* Terminate the open connection to the TIP process.
 363    Use this when you want to detach and do something else
 364    with your gdb.  Leave remote process running (with no breakpoints set). */
 365 static void
 366 udi_detach (args,from_tty)
 367      char *args;
 368      int from_tty;
 369 {
 370
 371   remove_breakpoints();         /* Just in case there were any left in */
 372
 373   if (UDIDisconnect (udi_session_id, UDIContinueSession))
 374     error ("UDIDisconnect() failed in udi_detach");
 375
 376   /* Don't try to UDIDisconnect it again in udi_close, which is called from
 377      pop_target.  */
 378   udi_session_id = -1;
 379   inferior_pid = 0;
 380
 381   pop_target();
 382
 383   if (from_tty)
 384     printf_unfiltered ("Detaching from TIP\n");
 385 }
 386
 387
 388 /****************************************************************** UDI_RESUME
 389 ** Tell the remote machine to resume.  */
 390
 391 static void
 392 udi_resume (pid, step, sig)
 393      int pid, step;
 394      enum target_signal sig;
 395 {
 396   UDIError tip_error;
 397   UDIUInt32 Steps = 1;
 398   UDIStepType StepType = UDIStepNatural;
 399   UDIRange Range;
 400
 401   if (step)                     /* step 1 instruction */
 402     {
 403       tip_error = UDIStep (Steps, StepType, Range);
 404       if (!tip_error)
 405         return;
 406
 407       fprintf_unfiltered (gdb_stderr,  "UDIStep() error = %d\n", tip_error);
 408       error ("failed in udi_resume");
 409     }
 410
 411   if (UDIExecute())
 412     error ("UDIExecute() failed in udi_resume");
 413 }
 414
 415 /******************************************************************** UDI_WAIT
 416 ** Wait until the remote machine stops, then return,
 417    storing status in STATUS just as `wait' would.  */
 418
 419 static int
 420 udi_wait (pid, status)
 421      int pid;
 422      struct target_waitstatus *status;
 423 {
 424   UDIInt32      MaxTime;
 425   UDIPId        PId;
 426   UDIInt32      StopReason;
 427   UDISizeT      CountDone;
 428   int           old_timeout = timeout;
 429   int           old_immediate_quit = immediate_quit;
 430   int           i;
 431
 432   status->kind = TARGET_WAITKIND_EXITED;
 433   status->value.integer = 0;
 434
 435 /* wait for message to arrive. It should be:
 436   If the target stops executing, udi_wait() should return.
 437 */
 438   timeout = 0;                  /* Wait indefinetly for a message */
 439   immediate_quit = 1;           /* Helps ability to QUIT */
 440
 441   while(1)
 442     {
 443       i = 0;
 444       MaxTime = UDIWaitForever;
 445       UDIWait(MaxTime, &PId, &StopReason);
 446       QUIT;                     /* Let user quit if they want */
 447
 448       switch (StopReason & UDIGrossState)
 449         {
 450         case UDIStdoutReady:
 451           if (UDIGetStdout (sbuf, (UDISizeT)SBUF_MAX, &CountDone))
 452             /* This is said to happen if the program tries to output
 453                a whole bunch of output (more than SBUF_MAX, I would
 454                guess).  It doesn't seem to happen with the simulator.  */
 455             warning ("UDIGetStdout() failed in udi_wait");
 456           fwrite (sbuf, 1, CountDone, gdb_stdout);
 457           gdb_flush(gdb_stdout);
 458           continue;
 459
 460         case UDIStderrReady:
 461           UDIGetStderr (sbuf, (UDISizeT)SBUF_MAX, &CountDone);
 462           fwrite (sbuf, 1, CountDone, gdb_stderr);
 463           gdb_flush(gdb_stderr);
 464           continue;
 465
 466         case UDIStdinNeeded:
 467           {
 468             int ch;
 469             i = 0;
 470             do
 471               {
 472                 ch = getchar ();
 473                 if (ch == EOF)
 474                   break;
 475                 sbuf[i++] = ch;
 476               } while (i < SBUF_MAX && ch != '\n');
 477             UDIPutStdin (sbuf, (UDISizeT)i, &CountDone);
 478             continue;
 479           }
 480
 481         case UDIRunning:
 482           /* In spite of the fact that we told UDIWait to wait forever, it will
 483              return spuriously sometimes.  */
 484         case UDIStdinModeX:
 485           continue;
 486         default:
 487           break;
 488         }
 489       break;
 490     }
 491
 492   switch (StopReason & UDIGrossState)
 493     {
 494     case UDITrapped:
 495       printf_unfiltered("Am290*0 received vector number %d\n", StopReason >> 24);
 496
 497       switch (StopReason >> 8)
 498         {
 499         case 0:                 /* Illegal opcode */
 500           printf_unfiltered("   (break point)\n");
 501           status->kind = TARGET_WAITKIND_STOPPED;
 502           status->value.sig = TARGET_SIGNAL_TRAP;
 503           break;
 504         case 1:                 /* Unaligned Access */
 505           status->kind = TARGET_WAITKIND_STOPPED;
 506           status->value.sig = TARGET_SIGNAL_BUS;
 507           break;
 508         case 3:
 509         case 4:
 510           status->kind = TARGET_WAITKIND_STOPPED;
 511           status->value.sig = TARGET_SIGNAL_FPE;
 512           break;
 513         case 5:                 /* Protection Violation */
 514           status->kind = TARGET_WAITKIND_STOPPED;
 515           /* Why not SEGV?  What is a Protection Violation?  */
 516           status->value.sig = TARGET_SIGNAL_ILL;
 517           break;
 518         case 6:
 519         case 7:
 520         case 8:                 /* User Instruction Mapping Miss */
 521         case 9:                 /* User Data Mapping Miss */
 522         case 10:                /* Supervisor Instruction Mapping Miss */
 523         case 11:                /* Supervisor Data Mapping Miss */
 524           status->kind = TARGET_WAITKIND_STOPPED;
 525           status->value.sig = TARGET_SIGNAL_SEGV;
 526           break;
 527         case 12:
 528         case 13:
 529           status->kind = TARGET_WAITKIND_STOPPED;
 530           status->value.sig = TARGET_SIGNAL_ILL;
 531           break;
 532         case 14:                /* Timer */
 533           status->kind = TARGET_WAITKIND_STOPPED;
 534           status->value.sig = TARGET_SIGNAL_ALRM;
 535           break;
 536         case 15:                /* Trace */
 537           status->kind = TARGET_WAITKIND_STOPPED;
 538           status->value.sig = TARGET_SIGNAL_TRAP;
 539           break;
 540         case 16:                /* INTR0 */
 541         case 17:                /* INTR1 */
 542         case 18:                /* INTR2 */
 543         case 19:                /* INTR3/Internal */
 544         case 20:                /* TRAP0 */
 545         case 21:                /* TRAP1 */
 546           status->kind = TARGET_WAITKIND_STOPPED;
 547           status->value.sig = TARGET_SIGNAL_INT;
 548           break;
 549         case 22:                /* Floating-Point Exception */
 550           status->kind = TARGET_WAITKIND_STOPPED;
 551           /* Why not FPE?  */
 552           status->value.sig = TARGET_SIGNAL_ILL;
 553           break;
 554         case 77:                /* assert 77 */
 555           status->kind = TARGET_WAITKIND_STOPPED;
 556           status->value.sig = TARGET_SIGNAL_TRAP;
 557           break;
 558         default:
 559           status->kind = TARGET_WAITKIND_EXITED;
 560           status->value.integer = 0;
 561         }
 562       break;
 563     case UDINotExecuting:
 564       status->kind = TARGET_WAITKIND_STOPPED;
 565       status->value.sig = TARGET_SIGNAL_TERM;
 566       break;
 567     case UDIStopped:
 568       status->kind = TARGET_WAITKIND_STOPPED;
 569       status->value.sig = TARGET_SIGNAL_TSTP;
 570       break;
 571     case UDIWarned:
 572       status->kind = TARGET_WAITKIND_STOPPED;
 573       status->value.sig = TARGET_SIGNAL_URG;
 574       break;
 575     case UDIStepped:
 576     case UDIBreak:
 577       status->kind = TARGET_WAITKIND_STOPPED;
 578       status->value.sig = TARGET_SIGNAL_TRAP;
 579       break;
 580     case UDIWaiting:
 581       status->kind = TARGET_WAITKIND_STOPPED;
 582       status->value.sig = TARGET_SIGNAL_STOP;
 583       break;
 584     case UDIHalted:
 585       status->kind = TARGET_WAITKIND_STOPPED;
 586       status->value.sig = TARGET_SIGNAL_KILL;
 587       break;
 588     case UDIExited:
 589     default:
 590       status->kind = TARGET_WAITKIND_EXITED;
 591       status->value.integer = 0;
 592     }
 593
 594   timeout = old_timeout;        /* Restore original timeout value */
 595   immediate_quit = old_immediate_quit;
 596   return inferior_pid;
 597 }
 598
 599 #if 0
 600 /* Handy for debugging */
 601 udi_pc()
 602 {
 603   UDIResource   From;
 604   UDIUInt32     *To;
 605   UDICount      Count;
 606   UDISizeT      Size = 4;
 607   UDICount      CountDone;
 608   UDIBool       HostEndian = 0;
 609   UDIError      err;
 610   int pc[2];
 611   unsigned long myregs[256];
 612   int i;
 613
 614   From.Space = UDI29KPC;
 615   From.Offset = 0;
 616   To = (UDIUInt32 *)pc;
 617   Count = 2;
 618
 619   err = UDIRead(From, To, Count, Size, &CountDone, HostEndian);
 620
 621   printf_unfiltered ("err = %d, CountDone = %d, pc[0] = 0x%x, pc[1] = 0x%x\n",
 622           err, CountDone, pc[0], pc[1]);
 623
 624   udi_fetch_registers(-1);
 625
 626   printf_unfiltered("other pc1 = 0x%x, pc0 = 0x%x\n", *(int *)&registers[4 * PC_REGNUM],
 627           *(int *)&registers[4 * NPC_REGNUM]);
 628
 629   /* Now, read all the registers globally */
 630
 631   From.Space = UDI29KGlobalRegs;
 632   From.Offset = 0;
 633   err = UDIRead(From, myregs, 256, 4, &CountDone, HostEndian);
 634
 635   printf ("err = %d, CountDone = %d\n", err, CountDone);
 636
 637   printf("\n");
 638
 639   for (i = 0; i < 256; i += 2)
 640     printf("%d:\t%#10x\t%11d\t%#10x\t%11d\n", i, myregs[i], myregs[i],
 641            myregs[i+1], myregs[i+1]);
 642   printf("\n");
 643
 644   return pc[0];
 645 }
 646 #endif
 647
 648 /********************************************************** UDI_FETCH_REGISTERS
 649  * Read a remote register 'regno'.
 650  * If regno==-1 then read all the registers.
 651  */
 652 static void
 653 udi_fetch_registers (regno)
 654 int     regno;
 655 {
 656   UDIResource   From;
 657   UDIUInt32     *To;
 658   UDICount      Count;
 659   UDISizeT      Size = 4;
 660   UDICount      CountDone;
 661   UDIBool       HostEndian = 0;
 662   UDIError      err;
 663   int           i;
 664
 665   if (regno >= 0)  {
 666     fetch_register(regno);
 667     return;
 668   }
 669
 670 /* Gr1/rsp */
 671
 672   From.Space = UDI29KGlobalRegs;
 673   From.Offset = 1;
 674   To = (UDIUInt32 *)&registers[4 * GR1_REGNUM];
 675   Count = 1;
 676   if (err = UDIRead(From, To, Count, Size, &CountDone, HostEndian))
 677     error("UDIRead() failed in udi_fetch_registers");
 678
 679   register_valid[GR1_REGNUM] = 1;
 680
 681 #if defined(GR64_REGNUM)        /* Read gr64-127 */
 682
 683 /* Global Registers gr64-gr95 */
 684
 685   From.Space = UDI29KGlobalRegs;
 686   From.Offset = 64;
 687   To = (UDIUInt32 *)&registers[4 * GR64_REGNUM];
 688   Count = 32;
 689   if (err = UDIRead(From, To, Count, Size, &CountDone, HostEndian))
 690     error("UDIRead() failed in udi_fetch_registers");
 691
 692   for (i = GR64_REGNUM; i < GR64_REGNUM + 32; i++)
 693     register_valid[i] = 1;
 694
 695 #endif  /*  GR64_REGNUM */
 696
 697 /* Global Registers gr96-gr127 */
 698
 699   From.Space = UDI29KGlobalRegs;
 700   From.Offset = 96;
 701   To = (UDIUInt32 *)&registers[4 * GR96_REGNUM];
 702   Count = 32;
 703   if (err = UDIRead(From, To, Count, Size, &CountDone, HostEndian))
 704     error("UDIRead() failed in udi_fetch_registers");
 705
 706   for (i = GR96_REGNUM; i < GR96_REGNUM + 32; i++)
 707     register_valid[i] = 1;
 708
 709 /* Local Registers */
 710
 711   From.Space = UDI29KLocalRegs;
 712   From.Offset = 0;
 713   To = (UDIUInt32 *)&registers[4 * LR0_REGNUM];
 714   Count = 128;
 715   if (err = UDIRead(From, To, Count, Size, &CountDone, HostEndian))
 716     error("UDIRead() failed in udi_fetch_registers");
 717
 718   for (i = LR0_REGNUM; i < LR0_REGNUM + 128; i++)
 719     register_valid[i] = 1;
 720
 721 /* Protected Special Registers */
 722
 723   From.Space = UDI29KSpecialRegs;
 724   From.Offset = 0;
 725   To = (UDIUInt32 *)&registers[4 * SR_REGNUM(0)];
 726   Count = 15;
 727   if (err = UDIRead(From, To, Count, Size, &CountDone, HostEndian))
 728     error("UDIRead() failed in udi_fetch_registers");
 729
 730   for (i = SR_REGNUM(0); i < SR_REGNUM(0) + 15; i++)
 731     register_valid[i] = 1;
 732
 733   if (USE_SHADOW_PC) {  /* Let regno_to_srnum() handle the register number */
 734     fetch_register(NPC_REGNUM);
 735     fetch_register(PC_REGNUM);
 736     fetch_register(PC2_REGNUM);
 737
 738 /* Unprotected Special Registers sr128-sr135 */
 739
 740     From.Space = UDI29KSpecialRegs;
 741     From.Offset = 128;
 742     To = (UDIUInt32 *)&registers[4 * SR_REGNUM(128)];
 743     Count = 135-128 + 1;
 744     if (err = UDIRead(From, To, Count, Size, &CountDone, HostEndian))
 745       error("UDIRead() failed in udi_fetch_registers");
 746
 747     for (i = SR_REGNUM(128); i < SR_REGNUM(128) + 135-128+1; i++)
 748       register_valid[i] = 1;
 749   }
 750
 751   if (remote_debug)
 752     {
 753       printf_unfiltered("Fetching all registers\n");
 754       printf_unfiltered("Fetching PC0 = 0x%x, PC1 = 0x%x, PC2 = 0x%x\n",
 755              read_register(NPC_REGNUM), read_register(PC_REGNUM),
 756              read_register(PC2_REGNUM));
 757     }
 758
 759   /* There doesn't seem to be any way to get these.  */
 760   {
 761     int val = -1;
 762     supply_register (FPE_REGNUM, (char *) &val);
 763     supply_register (INTE_REGNUM, (char *) &val);
 764     supply_register (FPS_REGNUM, (char *) &val);
 765     supply_register (EXO_REGNUM, (char *) &val);
 766   }
 767 }
 768
 769
 770 /********************************************************* UDI_STORE_REGISTERS
 771 ** Store register regno into the target.
 772  * If regno==-1 then store all the registers.
 773  */
 774
 775 static void
 776 udi_store_registers (regno)
 777 int regno;
 778 {
 779   UDIUInt32     *From;
 780   UDIResource   To;
 781   UDICount      Count;
 782   UDISizeT      Size = 4;
 783   UDICount      CountDone;
 784   UDIBool       HostEndian = 0;
 785
 786   if (regno >= 0)
 787     {
 788       store_register(regno);
 789       return;
 790     }
 791
 792   if (remote_debug)
 793     {
 794       printf_unfiltered("Storing all registers\n");
 795       printf_unfiltered("PC0 = 0x%x, PC1 = 0x%x, PC2 = 0x%x\n", read_register(NPC_REGNUM),
 796              read_register(PC_REGNUM), read_register(PC2_REGNUM));
 797     }
 798
 799 /* Gr1/rsp */
 800
 801   From = (UDIUInt32 *)&registers[4 * GR1_REGNUM];
 802   To.Space = UDI29KGlobalRegs;
 803   To.Offset = 1;
 804   Count = 1;
 805   if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
 806     error("UDIWrite() failed in udi_store_regisetrs");
 807
 808 #if defined(GR64_REGNUM)
 809
 810 /* Global registers gr64-gr95 */
 811
 812   From = (UDIUInt32 *)&registers[4 * GR64_REGNUM];
 813   To.Space = UDI29KGlobalRegs;
 814   To.Offset = 64;
 815   Count = 32;
 816   if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
 817     error("UDIWrite() failed in udi_store_regisetrs");
 818
 819 #endif  /* GR64_REGNUM */
 820
 821 /* Global registers gr96-gr127 */
 822
 823   From = (UDIUInt32 *)&registers[4 * GR96_REGNUM];
 824   To.Space = UDI29KGlobalRegs;
 825   To.Offset = 96;
 826   Count = 32;
 827   if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
 828     error("UDIWrite() failed in udi_store_regisetrs");
 829
 830 /* Local Registers */
 831
 832   From = (UDIUInt32 *)&registers[4 * LR0_REGNUM];
 833   To.Space = UDI29KLocalRegs;
 834   To.Offset = 0;
 835   Count = 128;
 836   if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
 837     error("UDIWrite() failed in udi_store_regisetrs");
 838
 839
 840 /* Protected Special Registers */ /* VAB through TMR */
 841
 842   From = (UDIUInt32 *)&registers[4 * SR_REGNUM(0)];
 843   To.Space = UDI29KSpecialRegs;
 844   To.Offset = 0;
 845   Count = 10;
 846   if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
 847     error("UDIWrite() failed in udi_store_regisetrs");
 848
 849 /* PC0, PC1, PC2 possibly as shadow registers */
 850
 851   From = (UDIUInt32 *)&registers[4 * SR_REGNUM(10)];
 852   To.Space = UDI29KSpecialRegs;
 853   Count = 3;
 854   if (USE_SHADOW_PC)
 855     To.Offset = 20;                             /* SPC0 */
 856   else
 857     To.Offset = 10;                             /* PC0 */
 858   if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
 859     error("UDIWrite() failed in udi_store_regisetrs");
 860
 861 /* PC1 via UDI29KPC */
 862
 863   From = (UDIUInt32 *)&registers[4 * PC_REGNUM];
 864   To.Space = UDI29KPC;
 865   To.Offset = 0;                                /* PC1 */
 866   Count = 1;
 867   if (UDIWrite (From, To, Count, Size, &CountDone, HostEndian))
 868     error ("UDIWrite() failed in udi_store_regisetrs");
 869
 870   /* LRU and MMU */
 871
 872   From = (UDIUInt32 *)&registers[4 * SR_REGNUM(13)];
 873   To.Space = UDI29KSpecialRegs;
 874   To.Offset = 13;
 875   Count = 2;
 876   if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
 877     error("UDIWrite() failed in udi_store_regisetrs");
 878
 879 /* Unprotected Special Registers */
 880
 881   From = (UDIUInt32 *)&registers[4 * SR_REGNUM(128)];
 882   To.Space = UDI29KSpecialRegs;
 883   To.Offset = 128;
 884   Count = 135-128 +1;
 885   if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
 886     error("UDIWrite() failed in udi_store_regisetrs");
 887
 888   registers_changed ();
 889 }
 890
 891 /****************************************************** UDI_PREPARE_TO_STORE */
 892 /* Get ready to modify the registers array.  On machines which store
 893    individual registers, this doesn't need to do anything.  On machines
 894    which store all the registers in one fell swoop, this makes sure
 895    that registers contains all the registers from the program being
 896    debugged.  */
 897
 898 static void
 899 udi_prepare_to_store ()
 900 {
 901   /* Do nothing, since we can store individual regs */
 902 }
 903
 904 /********************************************************** TRANSLATE_ADDR */
 905 static CORE_ADDR
 906 translate_addr(addr)
 907 CORE_ADDR addr;
 908 {
 909 #if defined(ULTRA3) && defined(KERNEL_DEBUGGING)
 910         /* Check for a virtual address in the kernel */
 911         /* Assume physical address of ublock is in  paddr_u register */
 912         /* FIXME: doesn't work for user virtual addresses */
 913         if (addr >= UVADDR) {
 914                 /* PADDR_U register holds the physical address of the ublock */
 915                 CORE_ADDR i = (CORE_ADDR)read_register(PADDR_U_REGNUM);
 916                 return(i + addr - (CORE_ADDR)UVADDR);
 917         } else {
 918                 return(addr);
 919         }
 920 #else
 921         return(addr);
 922 #endif
 923 }
 924 /************************************************* UDI_XFER_INFERIOR_MEMORY */
 925 /* FIXME!  Merge these two.  */
 926 static int
 927 udi_xfer_inferior_memory (memaddr, myaddr, len, write)
 928      CORE_ADDR memaddr;
 929      char *myaddr;
 930      int len;
 931      int write;
 932 {
 933
 934   memaddr = translate_addr(memaddr);
 935
 936   if (write)
 937     return udi_write_inferior_memory (memaddr, myaddr, len);
 938   else
 939     return udi_read_inferior_memory (memaddr, myaddr, len);
 940 }
 941
 942 /********************************************************** UDI_FILES_INFO */
 943 static void
 944 udi_files_info ()
 945 {
 946   printf_unfiltered ("\tAttached to UDI socket to %s", udi_config_id);
 947   if (prog_name != NULL)
 948     printf_unfiltered ("and running program %s", prog_name);
 949   printf_unfiltered (".\n");
 950 }
 951
 952 /**************************************************** UDI_INSERT_BREAKPOINT */
 953 static int
 954 udi_insert_breakpoint (addr, contents_cache)
 955      CORE_ADDR addr;
 956      char *contents_cache;
 957 {
 958   int cnt;
 959   UDIError err;
 960
 961   for (cnt = 0; cnt < BKPT_TABLE_SIZE; cnt++)
 962     if (bkpt_table[cnt].Type == 0) /* Find first free slot */
 963       break;
 964
 965   if(cnt >= BKPT_TABLE_SIZE)
 966     error("Too many breakpoints set");
 967
 968   bkpt_table[cnt].Addr.Offset = addr;
 969   bkpt_table[cnt].Addr.Space  = UDI29KIRAMSpace;
 970   bkpt_table[cnt].PassCount = 1;
 971   bkpt_table[cnt].Type = UDIBreakFlagExecute;
 972
 973   err = UDISetBreakpoint(bkpt_table[cnt].Addr,
 974                          bkpt_table[cnt].PassCount,
 975                          bkpt_table[cnt].Type,
 976                          &bkpt_table[cnt].BreakId);
 977
 978   if (err == 0) return 0;               /* Success */
 979
 980   bkpt_table[cnt].Type = 0;
 981   error("UDISetBreakpoint returned error code %d\n", err);
 982 }
 983
 984 /**************************************************** UDI_REMOVE_BREAKPOINT */
 985 static int
 986 udi_remove_breakpoint (addr, contents_cache)
 987      CORE_ADDR addr;
 988      char *contents_cache;
 989 {
 990   int cnt;
 991   UDIError err;
 992
 993   for (cnt = 0; cnt < BKPT_TABLE_SIZE; cnt++)
 994     if (bkpt_table[cnt].Addr.Offset == addr) /* Find matching breakpoint */
 995       break;
 996
 997   if(cnt >= BKPT_TABLE_SIZE)
 998     error("Can't find breakpoint in table");
 999
1000   bkpt_table[cnt].Type = 0;
1001
1002   err = UDIClearBreakpoint(bkpt_table[cnt].BreakId);
1003   if (err == 0) return 0;       /* Success */
1004
1005   error("UDIClearBreakpoint returned error code %d\n", err);
1006 }
1007
1008 static void
1009 udi_kill(arg,from_tty)
1010      char *arg;
1011      int from_tty;
1012 {
1013
1014 #if 0
1015 /*
1016 UDIStop does not really work as advertised.  It causes the TIP to close it's
1017 connection, which usually results in GDB dying with a SIGPIPE.  For now, we
1018 just invoke udi_close, which seems to get things right.
1019 */
1020   UDIStop();
1021
1022   udi_session_id = -1;
1023   inferior_pid = 0;
1024
1025   if (from_tty)
1026     printf_unfiltered("Target has been stopped.");
1027 #endif /* 0 */
1028 #if 0
1029   udi_close(0);
1030   pop_target();
1031 #endif /* 0 */
1032
1033   /* Keep the target around, e.g. so "run" can do the right thing when
1034      we are already debugging something.  */
1035
1036   if (UDIDisconnect (udi_session_id, UDITerminateSession))
1037     {
1038       warning ("UDIDisconnect() failed");
1039     }
1040
1041   /* Do not try to close udi_session_id again, later in the program.  */
1042   udi_session_id = -1;
1043   inferior_pid = 0;
1044 }
1045
1046 /*
1047    Load a program into the target.  Args are: `program {options}'.  The options
1048    are used to control loading of the program, and are NOT passed onto the
1049    loaded code as arguments.  (You need to use the `run' command to do that.)
1050
1051    The options are:
1052                 -ms %d  Set mem stack size to %d
1053                 -rs %d  Set regular stack size to %d
1054                 -i      send init info (default)
1055                 -noi    don't send init info
1056                 -[tT]   Load Text section
1057                 -[dD]   Load Data section
1058                 -[bB]   Load BSS section
1059                 -[lL]   Load Lit section
1060   */
1061
1062 static void
1063 download(load_arg_string, from_tty)
1064      char *load_arg_string;
1065      int from_tty;
1066 {
1067 #define DEFAULT_MEM_STACK_SIZE          0x6000
1068 #define DEFAULT_REG_STACK_SIZE          0x2000
1069
1070   char *token;
1071   char *filename;
1072   asection *section;
1073   bfd *pbfd;
1074   UDIError err;
1075   int load_text = 1, load_data = 1, load_bss = 1, load_lit = 1;
1076
1077   address_ranges[0].Space = UDI29KIRAMSpace;
1078   address_ranges[0].Offset = 0xffffffff;
1079   address_ranges[0].Size = 0;
1080
1081   address_ranges[1].Space = UDI29KDRAMSpace;
1082   address_ranges[1].Offset = 0xffffffff;
1083   address_ranges[1].Size = 0;
1084
1085   stack_sizes[0] = DEFAULT_REG_STACK_SIZE;
1086   stack_sizes[1] = DEFAULT_MEM_STACK_SIZE;
1087
1088   dont_repeat ();
1089
1090   filename = strtok(load_arg_string, " \t");
1091   if (!filename)
1092     error ("Must specify at least a file name with the load command");
1093
1094   filename = tilde_expand (filename);
1095   make_cleanup (free, filename);
1096
1097   while (token = strtok (NULL, " \t"))
1098     {
1099       if (token[0] == '-')
1100         {
1101           token++;
1102
1103           if (STREQ (token, "ms"))
1104             stack_sizes[1] = atol (strtok (NULL, " \t"));
1105           else if (STREQ (token, "rs"))
1106             stack_sizes[0] = atol (strtok (NULL, " \t"));
1107           else
1108             {
1109               load_text = load_data = load_bss = load_lit = 0;
1110
1111               while (*token)
1112                 {
1113                   switch (*token++)
1114                     {
1115                     case 't':
1116                     case 'T':
1117                       load_text = 1;
1118                       break;
1119                     case 'd':
1120                     case 'D':
1121                       load_data = 1;
1122                       break;
1123                     case 'b':
1124                     case 'B':
1125                       load_bss = 1;
1126                       break;
1127                     case 'l':
1128                     case 'L':
1129                       load_lit = 1;
1130                       break;
1131                     default:
1132                       error ("Unknown UDI load option -%s", token-1);
1133                     }
1134                 }
1135             }
1136         }
1137     }
1138
1139   pbfd = bfd_openr (filename, gnutarget);
1140
1141   if (!pbfd)
1142     /* FIXME: should be using bfd_errmsg, not assuming it was
1143        bfd_error_system_call.  */
1144     perror_with_name (filename);
1145
1146   /* FIXME: should be checking for errors from bfd_close (for one thing,
1147      on error it does not free all the storage associated with the
1148      bfd).  */
1149   make_cleanup (bfd_close, pbfd);
1150
1151   QUIT;
1152   immediate_quit++;
1153
1154   if (!bfd_check_format (pbfd, bfd_object))
1155     error ("It doesn't seem to be an object file");
1156
1157   for (section = pbfd->sections; section; section = section->next)
1158     {
1159       if (bfd_get_section_flags (pbfd, section) & SEC_ALLOC)
1160         {
1161           UDIResource To;
1162           UDICount Count;
1163           unsigned long section_size, section_end;
1164           const char *section_name;
1165
1166           section_name = bfd_get_section_name (pbfd, section);
1167           if (STREQ (section_name, ".text") && !load_text)
1168             continue;
1169           else if (STREQ (section_name, ".data") && !load_data)
1170             continue;
1171           else if (STREQ (section_name, ".bss") && !load_bss)
1172             continue;
1173           else if (STREQ (section_name, ".lit") && !load_lit)
1174             continue;
1175
1176           To.Offset = bfd_get_section_vma (pbfd, section);
1177           section_size = bfd_section_size (pbfd, section);
1178           section_end = To.Offset + section_size;
1179
1180           if (section_size == 0)
1181             /* This is needed at least in the BSS case, where the code
1182                below starts writing before it even checks the size.  */
1183             continue;
1184
1185           printf_unfiltered("[Loading section %s at %x (%d bytes)]\n",
1186                  section_name,
1187                  To.Offset,
1188                  section_size);
1189
1190           if (bfd_get_section_flags (pbfd, section) & SEC_CODE)
1191             {
1192               To.Space = UDI29KIRAMSpace;
1193
1194               address_ranges[0].Offset = min (address_ranges[0].Offset,
1195                                               To.Offset);
1196               address_ranges[0].Size = max (address_ranges[0].Size,
1197                                             section_end
1198                                             - address_ranges[0].Offset);
1199             }
1200           else
1201             {
1202               To.Space = UDI29KDRAMSpace;
1203
1204               address_ranges[1].Offset = min (address_ranges[1].Offset,
1205                                               To.Offset);
1206               address_ranges[1].Size = max (address_ranges[1].Size,
1207                                             section_end
1208                                             - address_ranges[1].Offset);
1209             }
1210
1211           if (bfd_get_section_flags (pbfd, section) & SEC_LOAD) /* Text, data or lit */
1212             {
1213               file_ptr fptr;
1214
1215               fptr = 0;
1216
1217               while (section_size > 0)
1218                 {
1219                   char buffer[1024];
1220
1221                   Count = min (section_size, 1024);
1222
1223                   bfd_get_section_contents (pbfd, section, buffer, fptr,
1224                                             Count);
1225
1226                   err = UDIWrite ((UDIHostMemPtr)buffer, /* From */
1227                                   To,                   /* To */
1228                                   Count,                /* Count */
1229                                   (UDISizeT)1,          /* Size */
1230                                   &Count,               /* CountDone */
1231                                   (UDIBool)0);          /* HostEndian */
1232                   if (err)
1233                     error ("UDIWrite failed, error = %d", err);
1234
1235                   To.Offset += Count;
1236                   fptr += Count;
1237                   section_size -= Count;
1238                 }
1239             }
1240           else                  /* BSS */
1241             {
1242               UDIResource From;
1243               unsigned long zero = 0;
1244
1245               /* Write a zero byte at the vma */
1246               /* FIXME: Broken for sections of 1-3 bytes (we test for
1247                  zero above).  */
1248               err = UDIWrite ((UDIHostMemPtr)&zero,     /* From */
1249                               To,                       /* To */
1250                               (UDICount)1,              /* Count */
1251                               (UDISizeT)4,              /* Size */
1252                               &Count,                   /* CountDone */
1253                               (UDIBool)0);              /* HostEndian */
1254               if (err)
1255                 error ("UDIWrite failed, error = %d", err);
1256
1257               From = To;
1258               To.Offset+=4;
1259
1260               /* Now, duplicate it for the length of the BSS */
1261               err = UDICopy (From,                      /* From */
1262                              To,                        /* To */
1263                              (UDICount)(section_size/4 - 1), /* Count */
1264                              (UDISizeT)4,               /* Size */
1265                              &Count,                    /* CountDone */
1266                              (UDIBool)1);               /* Direction */
1267               if (err)
1268                 {
1269                   char message[100];
1270                   int xerr;
1271
1272                   xerr = UDIGetErrorMsg(err, 100, message, &Count);
1273                   if (!xerr)
1274                     fprintf_unfiltered (gdb_stderr, "Error is %s\n", message);
1275                   else
1276                     fprintf_unfiltered (gdb_stderr, "xerr is %d\n", xerr);
1277                   error ("UDICopy failed, error = %d", err);
1278                 }
1279             }
1280
1281         }
1282     }
1283
1284   entry.Space = UDI29KIRAMSpace;
1285   entry.Offset = bfd_get_start_address (pbfd);
1286
1287   immediate_quit--;
1288 }
1289
1290 /* User interface to download an image into the remote target.  See download()
1291  * for details on args.
1292  */
1293
1294 static void
1295 udi_load(args, from_tty)
1296      char *args;
1297      int from_tty;
1298 {
1299   download (args, from_tty);
1300
1301   symbol_file_add (strtok (args, " \t"), from_tty, 0, 0, 0, 0);
1302
1303   /* Getting new symbols may change our opinion about what is
1304      frameless.  */
1305   reinit_frame_cache ();
1306 }
1307
1308 /*************************************************** UDI_WRITE_INFERIOR_MEMORY
1309 ** Copy LEN bytes of data from debugger memory at MYADDR
1310    to inferior's memory at MEMADDR.  Returns number of bytes written.  */
1311 static int
1312 udi_write_inferior_memory (memaddr, myaddr, len)
1313      CORE_ADDR memaddr;
1314      char *myaddr;
1315      int len;
1316 {
1317   int           nwritten = 0;
1318   UDIUInt32     *From;
1319   UDIResource   To;
1320   UDICount      Count;
1321   UDISizeT      Size = 1;
1322   UDICount      CountDone = 0;
1323   UDIBool       HostEndian = 0;
1324
1325   To.Space = udi_memory_space(memaddr);
1326   From = (UDIUInt32*)myaddr;
1327
1328   while (nwritten < len)
1329   {     Count = len - nwritten;
1330         if (Count > MAXDATA) Count = MAXDATA;
1331         To.Offset = memaddr + nwritten;
1332         if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
1333         {  error("UDIWrite() failed in udi_write_inferior_memory");
1334            break;
1335         }
1336         else
1337         {  nwritten += CountDone;
1338            From += CountDone;
1339         }
1340   }
1341   return(nwritten);
1342 }
1343
1344 /**************************************************** UDI_READ_INFERIOR_MEMORY
1345 ** Read LEN bytes from inferior memory at MEMADDR.  Put the result
1346    at debugger address MYADDR.  Returns number of bytes read.  */
1347 static int
1348 udi_read_inferior_memory(memaddr, myaddr, len)
1349      CORE_ADDR memaddr;
1350      char *myaddr;
1351      int len;
1352 {
1353   int           nread = 0;
1354   UDIResource   From;
1355   UDIUInt32     *To;
1356   UDICount      Count;
1357   UDISizeT      Size = 1;
1358   UDICount      CountDone = 0;
1359   UDIBool       HostEndian = 0;
1360   UDIError      err;
1361
1362   From.Space = udi_memory_space(memaddr);
1363   To = (UDIUInt32*)myaddr;
1364
1365   while (nread < len)
1366   {     Count = len - nread;
1367         if (Count > MAXDATA) Count = MAXDATA;
1368         From.Offset = memaddr + nread;
1369         if(err = UDIRead(From, To, Count, Size, &CountDone, HostEndian))
1370         {  error("UDIRead() failed in udi_read_inferior_memory");
1371            break;
1372         }
1373         else
1374         {  nread += CountDone;
1375            To += CountDone;
1376         }
1377   }
1378   return(nread);
1379 }
1380
1381 /********************************************************************* WARNING
1382 */
1383 udi_warning(num)
1384 int     num;
1385 {
1386     error ("ERROR while loading program into remote TIP: $d\n", num);
1387 }
1388
1389
1390 /*****************************************************************************/
1391 /* Fetch a single register indicatated by 'regno'.
1392  * Returns 0/-1 on success/failure.
1393  */
1394 static void
1395 fetch_register (regno)
1396      int regno;
1397 {
1398   UDIResource   From;
1399   UDIUInt32     To;
1400   UDICount      Count = 1;
1401   UDISizeT      Size = 4;
1402   UDICount      CountDone;
1403   UDIBool       HostEndian = 0;
1404   UDIError      err;
1405   int           result;
1406
1407   if (regno == GR1_REGNUM)
1408     {
1409       From.Space = UDI29KGlobalRegs;
1410       From.Offset = 1;
1411     }
1412   else if (regno >= GR96_REGNUM && regno < GR96_REGNUM + 32)
1413     {
1414       From.Space = UDI29KGlobalRegs;
1415       From.Offset = (regno - GR96_REGNUM) + 96;;
1416     }
1417
1418 #if defined(GR64_REGNUM)
1419
1420   else if (regno >= GR64_REGNUM && regno < GR64_REGNUM + 32 )
1421     {
1422       From.Space = UDI29KGlobalRegs;
1423       From.Offset = (regno - GR64_REGNUM) + 64;
1424     }
1425
1426 #endif  /* GR64_REGNUM */
1427
1428   else if (regno >= LR0_REGNUM && regno < LR0_REGNUM + 128)
1429     {
1430       From.Space = UDI29KLocalRegs;
1431       From.Offset = (regno - LR0_REGNUM);
1432     }
1433   else if (regno>=FPE_REGNUM && regno<=EXO_REGNUM)
1434     {
1435       int val = -1;
1436       supply_register(160 + (regno - FPE_REGNUM),(char *) &val);
1437       return;           /* Pretend Success */
1438     }
1439   else
1440     {
1441       From.Space = UDI29KSpecialRegs;
1442       From.Offset = regnum_to_srnum(regno);
1443     }
1444
1445   if (err = UDIRead(From, &To, Count, Size, &CountDone, HostEndian))
1446     error("UDIRead() failed in udi_fetch_registers");
1447
1448   supply_register(regno, (char *) &To);
1449
1450   if (remote_debug)
1451     printf_unfiltered("Fetching register %s = 0x%x\n", reg_names[regno], To);
1452 }
1453 /*****************************************************************************/
1454 /* Store a single register indicated by 'regno'.
1455  * Returns 0/-1 on success/failure.
1456  */
1457 static int
1458 store_register (regno)
1459      int regno;
1460 {
1461   int           result;
1462   UDIUInt32     From;
1463   UDIResource   To;
1464   UDICount      Count = 1;
1465   UDISizeT      Size = 4;
1466   UDICount      CountDone;
1467   UDIBool       HostEndian = 0;
1468
1469   From =  read_register (regno);        /* get data value */
1470
1471   if (remote_debug)
1472     printf_unfiltered("Storing register %s = 0x%x\n", reg_names[regno], From);
1473
1474   if (regno == GR1_REGNUM)
1475     {
1476       To.Space = UDI29KGlobalRegs;
1477       To.Offset = 1;
1478       result = UDIWrite(&From, To, Count, Size, &CountDone, HostEndian);
1479       /* Setting GR1 changes the numbers of all the locals, so invalidate the
1480        * register cache.  Do this *after* calling read_register, because we want
1481        * read_register to return the value that write_register has just stuffed
1482        * into the registers array, not the value of the register fetched from
1483        * the inferior.
1484        */
1485       registers_changed ();
1486     }
1487 #if defined(GR64_REGNUM)
1488   else if (regno >= GR64_REGNUM && regno < GR64_REGNUM + 32 )
1489     {
1490       To.Space = UDI29KGlobalRegs;
1491       To.Offset = (regno - GR64_REGNUM) + 64;
1492       result = UDIWrite(&From, To, Count, Size, &CountDone, HostEndian);
1493     }
1494 #endif  /* GR64_REGNUM */
1495   else if (regno >= GR96_REGNUM && regno < GR96_REGNUM + 32)
1496     {
1497       To.Space = UDI29KGlobalRegs;
1498       To.Offset = (regno - GR96_REGNUM) + 96;
1499       result = UDIWrite(&From, To, Count, Size, &CountDone, HostEndian);
1500     }
1501   else if (regno >= LR0_REGNUM && regno < LR0_REGNUM + 128)
1502     {
1503       To.Space = UDI29KLocalRegs;
1504       To.Offset = (regno - LR0_REGNUM);
1505       result = UDIWrite(&From, To, Count, Size, &CountDone, HostEndian);
1506     }
1507   else if (regno >= FPE_REGNUM && regno <= EXO_REGNUM)
1508     return 0;           /* Pretend Success */
1509   else if (regno == PC_REGNUM)
1510     {
1511       /* PC1 via UDI29KPC */
1512
1513       To.Space = UDI29KPC;
1514       To.Offset = 0;            /* PC1 */
1515       result = UDIWrite (&From, To, Count, Size, &CountDone, HostEndian);
1516
1517       /* Writing to this loc actually changes the values of pc0 & pc1 */
1518
1519       register_valid[PC_REGNUM] = 0; /* pc1 */
1520       register_valid[NPC_REGNUM] = 0; /* pc0 */
1521     }
1522   else  /* An unprotected or protected special register */
1523     {
1524       To.Space = UDI29KSpecialRegs;
1525       To.Offset = regnum_to_srnum(regno);
1526       result = UDIWrite(&From, To, Count, Size, &CountDone, HostEndian);
1527     }
1528
1529   if (result != 0)
1530     error("UDIWrite() failed in store_registers");
1531
1532   return 0;
1533 }
1534 /********************************************************** REGNUM_TO_SRNUM */
1535 /*
1536  * Convert a gdb special register number to a 29000 special register number.
1537  */
1538 static int
1539 regnum_to_srnum(regno)
1540 int     regno;
1541 {
1542         switch(regno) {
1543                 case VAB_REGNUM: return(0);
1544                 case OPS_REGNUM: return(1);
1545                 case CPS_REGNUM: return(2);
1546                 case CFG_REGNUM: return(3);
1547                 case CHA_REGNUM: return(4);
1548                 case CHD_REGNUM: return(5);
1549                 case CHC_REGNUM: return(6);
1550                 case RBP_REGNUM: return(7);
1551                 case TMC_REGNUM: return(8);
1552                 case TMR_REGNUM: return(9);
1553                 case NPC_REGNUM: return(USE_SHADOW_PC ? (20) : (10));
1554                 case PC_REGNUM:  return(USE_SHADOW_PC ? (21) : (11));
1555                 case PC2_REGNUM: return(USE_SHADOW_PC ? (22) : (12));
1556                 case MMU_REGNUM: return(13);
1557                 case LRU_REGNUM: return(14);
1558                 case IPC_REGNUM: return(128);
1559                 case IPA_REGNUM: return(129);
1560                 case IPB_REGNUM: return(130);
1561                 case Q_REGNUM:   return(131);
1562                 case ALU_REGNUM: return(132);
1563                 case BP_REGNUM:  return(133);
1564                 case FC_REGNUM:  return(134);
1565                 case CR_REGNUM:  return(135);
1566                 case FPE_REGNUM: return(160);
1567                 case INTE_REGNUM: return(161);
1568                 case FPS_REGNUM: return(162);
1569                 case EXO_REGNUM:return(164);
1570                 default:
1571                         return(255);    /* Failure ? */
1572         }
1573 }
1574 /****************************************************************************/
1575 /*
1576  * Determine the Target memory space qualifier based on the addr.
1577  * FIXME: Can't distinguis I_ROM/D_ROM.
1578  * FIXME: Doesn't know anything about I_CACHE/D_CACHE.
1579  */
1580 static CPUSpace
1581 udi_memory_space(addr)
1582 CORE_ADDR       addr;
1583 {
1584         UDIUInt32 tstart = IMemStart;
1585         UDIUInt32 tend   = tstart + IMemSize;
1586         UDIUInt32 dstart = DMemStart;
1587         UDIUInt32 dend   = tstart + DMemSize;
1588         UDIUInt32 rstart = RMemStart;
1589         UDIUInt32 rend   = tstart + RMemSize;
1590
1591         if (((UDIUInt32)addr >= tstart) && ((UDIUInt32)addr < tend)) {
1592                 return UDI29KIRAMSpace;
1593         } else if (((UDIUInt32)addr >= dstart) && ((UDIUInt32)addr < dend)) {
1594                 return UDI29KDRAMSpace;
1595         } else if (((UDIUInt32)addr >= rstart) && ((UDIUInt32)addr < rend)) {
1596                 /* FIXME: how do we determine between D_ROM and I_ROM */
1597                 return UDI29KIROMSpace;
1598         } else  /* FIXME: what do me do now? */
1599                 return UDI29KDRAMSpace; /* Hmmm! */
1600 }
1601 /*********************************************************************** STUBS
1602 */
1603
1604 void  convert16() {;}
1605 void  convert32() {;}
1606 GDB_FILE * EchoFile = 0;                /* used for debugging */
1607 int   QuietMode = 0;            /* used for debugging */
1608 \f
1609 #ifdef NO_HIF_SUPPORT
1610 service_HIF(msg)
1611      union msg_t *msg;
1612 {
1613   return(0);                    /* Emulate a failure */
1614 }
1615 #endif
1616 \f
1617 /* Target_ops vector.  Not static because there does not seem to be
1618    any portable way to do a forward declaration of a static variable.
1619    The RS/6000 doesn't like "extern" followed by "static"; SunOS
1620    /bin/cc doesn't like "static" twice.  */
1621
1622 struct target_ops udi_ops = {
1623         "udi",
1624         "Remote UDI connected TIP",
1625         "Remote debug an AMD 29k using UDI socket connection to TIP process.\n\
1626 Arguments are\n\
1627 `configuration-id AF_INET hostname port-number'\n\
1628     To connect via the network, where hostname and port-number specify the\n\
1629     host and port where you can connect via UDI.\n\
1630     configuration-id is unused.\n\
1631 \n\
1632 `configuration-id AF_UNIX socket-name tip-program'\n\
1633     To connect using a local connection to the \"tip.exe\" program which is\n\
1634     supplied by AMD.  If socket-name specifies an AF_UNIX socket then the\n\
1635     tip program must already be started; connect to it using that socket.\n\
1636     If not, start up tip-program, which should be the name of the tip\n\
1637     program.  If appropriate, the PATH environment variable is searched.\n\
1638     configuration-id is unused.\n\
1639 \n\
1640 `configuration-id'\n\
1641     Look up the configuration in ./udi_soc or /etc/udi_soc, which\n\
1642     are files containing lines in the above formats.  configuration-id is\n\
1643     used to pick which line of the file to use.",
1644         udi_open,
1645         udi_close,
1646         udi_attach,
1647         udi_detach,
1648         udi_resume,
1649         udi_wait,
1650         udi_fetch_registers,
1651         udi_store_registers,
1652         udi_prepare_to_store,
1653         udi_xfer_inferior_memory,
1654         udi_files_info,
1655         udi_insert_breakpoint,
1656         udi_remove_breakpoint,
1657         0,                      /* termial_init */
1658         0,                      /* terminal_inferior */
1659         0,                      /* terminal_ours_for_output */
1660         0,                      /* terminal_ours */
1661         0,                      /* terminal_info */
1662         udi_kill,               /* FIXME, kill */
1663         udi_load,
1664         0,                      /* lookup_symbol */
1665         udi_create_inferior,
1666         udi_mourn,              /* mourn_inferior FIXME */
1667         0,                      /* can_run */
1668         0,                      /* notice_signals */
1669         0,                      /* to_stop */
1670         process_stratum,
1671         0,                      /* next */
1672         1,                      /* has_all_memory */
1673         1,                      /* has_memory */
1674         1,                      /* has_stack */
1675         1,                      /* has_registers */
1676         1,                      /* has_execution */
1677         0,                      /* sections */
1678         0,                      /* sections_end */
1679         OPS_MAGIC,              /* Always the last thing */
1680 };
1681
1682 void
1683 _initialize_remote_udi ()
1684 {
1685   add_target (&udi_ops);
1686 }