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.
5 This file is part of GDB.
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.
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.
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. */
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.
27 - Originally written by Daniel Mann at AMD for MiniMON and gdb 3.91.6.
29 file to gdb 3.95. I was unable to get this working on sun3os4
30 with termio, only with sgtty. Because we are only attempting to
31 use this module to debug our kernel, which is already loaded when
32 gdb is started up, I did not code up the file downloading facilities.
33 As a result this module has only the stubs to download files.
34 You should get tagged at compile time if you need to make any
36 - Daniel Mann at AMD took the 3.95 adaptions above and replaced
37 MiniMON interface with UDI-p interface. */
50 #include "29k-share/udi/udiproc.h"
54 /* access the register store directly, without going through
55 the normal handler functions. This avoids an extra data copy. */
58 extern int stop_soon_quietly; /* for wait_for_inferior */
59 extern struct value *call_function_by_hand();
60 static void udi_resume PARAMS ((int step, int sig));
61 static void udi_fetch_registers PARAMS ((int regno));
62 static void udi_load PARAMS ((char *args, int from_tty));
63 static void fetch_register PARAMS ((int regno));
64 static void udi_store_registers PARAMS ((int regno));
65 static int store_register PARAMS ((int regno));
66 static int regnum_to_srnum PARAMS ((int regno));
67 static void udi_close PARAMS ((int quitting));
68 static CPUSpace udi_memory_space PARAMS ((CORE_ADDR addr));
69 static int udi_write_inferior_memory PARAMS ((CORE_ADDR memaddr, char *myaddr,
71 static int udi_read_inferior_memory PARAMS ((CORE_ADDR memaddr, char *myaddr,
73 static void download PARAMS ((char *load_arg_string, int from_tty));
74 char CoffFileName[100] = "";
78 #define TYPE_UNKNOWN 0
82 static char *processor_name[] = { "Unknown", "Am29000", "Am29030", "Am29050" };
83 static int processor_type=TYPE_UNKNOWN;
84 #define FREEZE_MODE (read_register(CPS_REGNUM) && 0x400)
85 #define USE_SHADOW_PC ((processor_type == TYPE_A29050) && FREEZE_MODE)
87 #define LLOG_FILE "udi.log"
88 #if defined (LOG_FILE)
92 static int timeout = 5;
93 extern struct target_ops udi_ops; /* Forward declaration */
95 /* Special register enumeration.
98 /******************************************************************* UDI DATA*/
99 #define MAXDATA 2*1024 /* max UDI[read/write] byte size */
100 /* Descriptor for I/O to remote machine. Initialize it to -1 so that
101 udi_open knows that we don't have a file open when the program
104 UDISessionId udi_session_id = -1;
106 CPUOffset IMemStart = 0;
107 CPUSizeT IMemSize = 0;
108 CPUOffset DMemStart = 0;
109 CPUSizeT DMemSize = 0;
110 CPUOffset RMemStart = 0;
111 CPUSizeT RMemSize = 0;
115 UDIMemoryRange address_ranges[2]; /* Text and data */
116 UDIResource entry = {0, 0}; /* Entry point */
117 CPUSizeT stack_sizes[2]; /* Regular and memory stacks */
119 #define SBUF_MAX 1024 /* maximum size of string handling buffer */
122 typedef struct bkpt_entry_str
127 unsigned int BreakId;
129 #define BKPT_TABLE_SIZE 40
130 static bkpt_entry_t bkpt_table[BKPT_TABLE_SIZE];
131 extern char dfe_errmsg[]; /* error string */
133 /* Called when SIGALRM signal sent due to alarm() timeout. */
136 volatile int n_alarms;
143 printf ("udi_timer called\n");
147 #endif /* HAVE_TERMIO */
149 /* malloc'd name of the program on the remote system. */
150 static char *prog_name = NULL;
152 /* Number of SIGTRAPs we need to simulate. That is, the next
153 NEED_ARTIFICIAL_TRAP calls to udi_wait should just return
154 SIGTRAP without actually waiting for anything. */
156 /* This is called not only when we first attach, but also when the
157 user types "run" after having attached. */
160 udi_create_inferior (execfile, args, env)
169 if (prog_name != NULL)
171 prog_name = savestring (execfile, strlen (execfile));
173 else if (entry.Offset)
176 error ("No image loaded into target.");
178 if (udi_session_id < 0)
180 printf("UDI connection not open yet.\n");
184 inferior_pid = 40000;
187 download(execfile, 0);
189 args1 = alloca (strlen(execfile) + strlen(args) + 2);
191 strcpy (args1, execfile);
193 strcat (args1, args);
195 UDIInitializeProcess (address_ranges, /* ProcessMemory[] */
196 (UDIInt)2, /* NumberOfRanges */
197 entry, /* EntryPoint */
198 stack_sizes, /* *StackSizes */
199 (UDIInt)2, /* NumberOfStacks */
200 args1); /* ArgString */
202 init_wait_for_inferior ();
203 clear_proceed_status ();
210 pop_target (); /* Pop back to no-child state */
211 generic_mourn_inferior ();
214 /******************************************************************** UDI_OPEN
215 ** Open a connection to remote TIP.
216 NAME is the socket domain used for communication with the TIP,
217 then a space and the socket name or TIP-host name.
218 '<udi_udi_config_id>' for example.
221 /* XXX - need cleanups for udiconnect for various failures!!! */
223 static char *udi_config_id;
225 udi_open (name, from_tty)
232 UDIMemoryRange KnownMemory[10];
233 UDIUInt32 ChipVersions[10];
234 UDIInt NumberOfRanges = 10;
235 UDIInt NumberOfChips = 10;
237 UDIUInt32 TIPId, TargetId, DFEId, DFE, TIP, DFEIPCId, TIPIPCId;
239 target_preopen(from_tty);
243 for (cnt = 0; cnt < BKPT_TABLE_SIZE; cnt++)
244 bkpt_table[cnt].Type = 0;
247 free (udi_config_id);
250 error("Usage: target udi config_id, where config_id appears in udi_soc file");
252 udi_config_id = strdup (strtok (name, " \t"));
254 if (UDIConnect (udi_config_id, &udi_session_id))
255 error("UDIConnect() failed: %s\n", dfe_errmsg);
257 push_target (&udi_ops);
260 #ifndef NO_SIGINTERRUPT
261 /* Cause SIGALRM's to make reads fail with EINTR instead of resuming
263 if (siginterrupt (SIGALRM, 1) != 0)
264 error ("udi_open: siginterrupt() %s", safe_strerror(errno));
267 /* Set up read timeout timer. */
268 if ((void (*)) signal (SIGALRM, udi_timer) == (void (*)) -1)
269 error ("udi_open: signal() %s", safe_strerror(errno));
272 #if defined (LOG_FILE)
273 log_file = fopen (LOG_FILE, "w");
274 if (log_file == NULL)
275 error ("udi_open: fopen(%s) %s", LOG_FILE, safe_strerror(errno));
278 ** Initialize target configuration structure (global)
280 if (UDIGetTargetConfig (KnownMemory, &NumberOfRanges,
281 ChipVersions, &NumberOfChips))
282 error ("UDIGetTargetConfig() failed");
283 if (NumberOfChips > 2)
284 fprintf(stderr,"Target has more than one processor\n");
285 for (cnt=0; cnt < NumberOfRanges; cnt++)
287 switch(KnownMemory[cnt].Space)
290 fprintf(stderr, "UDIGetTargetConfig() unknown memory space\n");
294 case UDI29KIROMSpace:
295 RMemStart = KnownMemory[cnt].Offset;
296 RMemSize = KnownMemory[cnt].Size;
298 case UDI29KIRAMSpace:
299 IMemStart = KnownMemory[cnt].Offset;
300 IMemSize = KnownMemory[cnt].Size;
302 case UDI29KDRAMSpace:
303 DMemStart = KnownMemory[cnt].Offset;
304 DMemSize = KnownMemory[cnt].Size;
309 /* Determine the processor revision level */
310 prl = (unsigned int)read_register (CFG_REGNUM) >> 24;
313 fprintf_filtered (stderr,
314 "Remote debugging Am29000 rev %c\n",'A'+(prl&0x1f));
315 processor_type = TYPE_A29000;
317 else if ((prl&0xe0) == 0x40) /* 29030 = 0x4* */
319 fprintf_filtered (stderr,
320 "Remote debugging Am2903* rev %c\n",'A'+(prl&0x1f));
321 processor_type = TYPE_A29030;
323 else if ((prl&0xe0) == 0x20) /* 29050 = 0x2* */
325 fprintf_filtered (stderr,
326 "Remote debugging Am29050 rev %c\n",'A'+(prl&0x1f));
327 processor_type = TYPE_A29050;
331 processor_type = TYPE_UNKNOWN;
332 fprintf_filtered (stderr,"WARNING: processor type unknown.\n");
334 if (UDICreateProcess (&PId))
335 fprintf(stderr, "UDICreateProcess() failed\n");
337 /* Print out some stuff, letting the user now what's going on */
338 if (UDICapabilities (&TIPId, &TargetId, DFEId, DFE, &TIP, &DFEIPCId,
340 error ("UDICapabilities() failed");
343 printf_filtered ("Remote debugging an %s connected via UDI socket,\n\
344 DFE-IPC version %x.%x.%x TIP-IPC version %x.%x.%x TIP version %x.%x.%x\n %s\n",
345 processor_name[processor_type],
346 (DFEIPCId>>8)&0xf, (DFEIPCId>>4)&0xf, DFEIPCId&0xf,
347 (TIPIPCId>>8)&0xf, (TIPIPCId>>4)&0xf, TIPIPCId&0xf,
348 (TargetId>>8)&0xf, (TargetId>>4)&0xf, TargetId&0xf,
353 /******************************************************************* UDI_CLOSE
354 Close the open connection to the TIP process.
355 Use this when you want to detach and do something else
358 udi_close (quitting) /*FIXME: how is quitting used */
361 if (udi_session_id < 0)
364 /* We should never get here if there isn't something valid in
367 if (UDIDisconnect (udi_session_id, UDITerminateSession))
368 error ("UDIDisconnect() failed in udi_close");
370 /* Do not try to close udi_session_id again, later in the program. */
374 #if defined (LOG_FILE)
375 if (ferror (log_file))
376 printf ("Error writing log file.\n");
377 if (fclose (log_file) != 0)
378 printf ("Error closing log file.\n");
381 printf_filtered (" Ending remote debugging\n");
384 /**************************************************************** UDI_ATACH */
385 /* Attach to a program that is already loaded and running
386 * Upon exiting the process's execution is stopped.
389 udi_attach (args, from_tty)
398 UDIBool HostEndian = 0;
401 if (udi_session_id < 0)
402 error ("UDI connection not opened yet, use the 'target udi' command.\n");
405 printf ("Attaching to remote program %s...\n", prog_name);
409 From.Offset = UDI29KSpecialRegs;
410 if (err = UDIRead(From, &PC_adds, Count, Size, &CountDone, HostEndian))
411 error ("UDIRead failed in udi_attach");
412 printf ("Remote process is now halted, pc1 = 0x%x.\n", PC_adds);
414 /************************************************************* UDI_DETACH */
415 /* Terminate the open connection to the TIP process.
416 Use this when you want to detach and do something else
417 with your gdb. Leave remote process running (with no breakpoints set). */
419 udi_detach (args,from_tty)
424 remove_breakpoints(); /* Just in case there were any left in */
426 if (UDIDisconnect (udi_session_id, UDIContinueSession))
427 error ("UDIDisconnect() failed in udi_detach");
429 pop_target(); /* calls udi_close to do the real work */
432 printf ("Ending remote debugging\n");
436 /****************************************************************** UDI_RESUME
437 ** Tell the remote machine to resume. */
440 udi_resume (step, sig)
445 UDIStepType StepType = UDIStepNatural;
448 if (step) /* step 1 instruction */
450 tip_error = UDIStep (Steps, StepType, Range);
454 fprintf (stderr, "UDIStep() error = %d\n", tip_error);
455 error ("failed in udi_resume");
459 error ("UDIExecute() failed in udi_resume");
462 /******************************************************************** UDI_WAIT
463 ** Wait until the remote machine stops, then return,
464 storing status in STATUS just as `wait' would. */
474 int old_timeout = timeout;
475 int old_immediate_quit = immediate_quit;
478 WSETEXIT ((*status), 0);
480 /* wait for message to arrive. It should be:
481 If the target stops executing, udi_wait() should return.
483 timeout = 0; /* Wait indefinetly for a message */
484 immediate_quit = 1; /* Helps ability to QUIT */
489 MaxTime = UDIWaitForever;
490 UDIWait(MaxTime, &PId, &StopReason);
491 QUIT; /* Let user quit if they want */
493 switch (StopReason & UDIGrossState)
496 if (UDIGetStdout (sbuf, (UDISizeT)SBUF_MAX, &CountDone))
497 error ("UDIGetStdin() failed in udi_wait");
498 fwrite (sbuf, 1, CountDone, stdout);
502 UDIGetStderr (sbuf, (UDISizeT)SBUF_MAX, &CountDone);
503 fwrite (sbuf, 1, CountDone, stderr);
507 printf("DEBUG: stdin requested ... continue\n");
508 /* UDIPutStdin(sbuf, (UDISizeT)i, &CountDone); */
511 /* In spite of the fact that we told UDIWait to wait forever, it will
512 return spuriously sometimes. */
521 switch (StopReason & UDIGrossState)
524 printf("Am290*0 received vector number %d\n", StopReason >> 24);
526 switch (StopReason >> 8)
528 case 0: /* Illegal opcode */
529 printf(" (break point)\n");
530 WSETSTOP ((*status), SIGTRAP);
532 case 1: /* Unaligned Access */
533 WSETSTOP ((*status), SIGBUS);
537 WSETSTOP ((*status), SIGFPE);
539 case 5: /* Protection Violation */
540 WSETSTOP ((*status), SIGILL);
544 case 8: /* User Instruction Mapping Miss */
545 case 9: /* User Data Mapping Miss */
546 case 10: /* Supervisor Instruction Mapping Miss */
547 case 11: /* Supervisor Data Mapping Miss */
548 WSETSTOP ((*status), SIGSEGV);
552 WSETSTOP ((*status), SIGILL);
555 WSETSTOP ((*status), SIGALRM);
558 WSETSTOP ((*status), SIGTRAP);
563 case 19: /* INTR3/Internal */
566 WSETSTOP ((*status), SIGINT);
568 case 22: /* Floating-Point Exception */
569 WSETSTOP ((*status), SIGILL);
571 case 77: /* assert 77 */
572 WSETSTOP ((*status), SIGTRAP);
575 WSETEXIT ((*status), 0);
578 case UDINotExecuting:
579 WSETSTOP ((*status), SIGTERM);
582 WSETSTOP ((*status), SIGTSTP);
585 WSETSTOP ((*status), SIGLOST);
589 WSETSTOP ((*status), SIGTRAP);
592 WSETSTOP ((*status), SIGSTOP);
595 WSETSTOP ((*status), SIGKILL);
599 WSETEXIT ((*status), 0);
602 timeout = old_timeout; /* Restore original timeout value */
603 immediate_quit = old_immediate_quit;
607 /********************************************************** UDI_FETCH_REGISTERS
608 * Read a remote register 'regno'.
609 * If regno==-1 then read all the registers.
612 udi_fetch_registers (regno)
620 UDIBool HostEndian = 0;
625 fetch_register(regno);
631 From.Space = UDI29KGlobalRegs;
633 To = (UDIUInt32 *)®isters[4 * GR1_REGNUM];
635 if (err = UDIRead(From, To, Count, Size, &CountDone, HostEndian))
636 error("UDIRead() failed in udi_fetch_registers");
638 register_valid[GR1_REGNUM] = 1;
640 #if defined(GR64_REGNUM) /* Read gr64-127 */
642 /* Global Registers gr64-gr95 */
644 From.Space = UDI29KGlobalRegs;
646 To = (UDIUInt32 *)®isters[4 * GR64_REGNUM];
648 if (err = UDIRead(From, To, Count, Size, &CountDone, HostEndian))
649 error("UDIRead() failed in udi_fetch_registers");
651 for (i = GR64_REGNUM; i < GR64_REGNUM + 32; i++)
652 register_valid[i] = 1;
654 #endif /* GR64_REGNUM */
656 /* Global Registers gr96-gr127 */
658 From.Space = UDI29KGlobalRegs;
660 To = (UDIUInt32 *)®isters[4 * GR96_REGNUM];
662 if (err = UDIRead(From, To, Count, Size, &CountDone, HostEndian))
663 error("UDIRead() failed in udi_fetch_registers");
665 for (i = GR96_REGNUM; i < GR96_REGNUM + 32; i++)
666 register_valid[i] = 1;
668 /* Local Registers */
670 From.Space = UDI29KLocalRegs;
672 To = (UDIUInt32 *)®isters[4 * LR0_REGNUM];
674 if (err = UDIRead(From, To, Count, Size, &CountDone, HostEndian))
675 error("UDIRead() failed in udi_fetch_registers");
677 for (i = LR0_REGNUM; i < LR0_REGNUM + 128; i++)
678 register_valid[i] = 1;
680 /* Protected Special Registers */
682 From.Space = UDI29KSpecialRegs;
684 To = (UDIUInt32 *)®isters[4 * SR_REGNUM(0)];
686 if (err = UDIRead(From, To, Count, Size, &CountDone, HostEndian))
687 error("UDIRead() failed in udi_fetch_registers");
689 for (i = SR_REGNUM(0); i < SR_REGNUM(0) + 15; i++)
690 register_valid[i] = 1;
692 if (USE_SHADOW_PC) { /* Let regno_to_srnum() handle the register number */
693 fetch_register(NPC_REGNUM);
694 fetch_register(PC_REGNUM);
695 fetch_register(PC2_REGNUM);
697 /* Unprotected Special Registers sr128-sr135 */
699 From.Space = UDI29KSpecialRegs;
701 To = (UDIUInt32 *)®isters[4 * SR_REGNUM(128)];
703 if (err = UDIRead(From, To, Count, Size, &CountDone, HostEndian))
704 error("UDIRead() failed in udi_fetch_registers");
706 for (i = SR_REGNUM(128); i < SR_REGNUM(128) + 135-128+1; i++)
707 register_valid[i] = 1;
712 printf("Fetching all registers\n");
713 printf("Fetching PC0 = 0x%x, PC1 = 0x%x, PC2 = 0x%x\n",
714 read_register(NPC_REGNUM), read_register(PC_REGNUM),
715 read_register(PC2_REGNUM));
718 /* There doesn't seem to be any way to get these. */
721 supply_register (FPE_REGNUM, (char *) &val);
722 supply_register (INTE_REGNUM, (char *) &val);
723 supply_register (FPS_REGNUM, (char *) &val);
724 supply_register (EXO_REGNUM, (char *) &val);
729 /********************************************************* UDI_STORE_REGISTERS
730 ** Store register regno into the target.
731 * If regno==-1 then store all the registers.
735 udi_store_registers (regno)
743 UDIBool HostEndian = 0;
747 store_register(regno);
753 printf("Storing all registers\n");
754 printf("PC0 = 0x%x, PC1 = 0x%x, PC2 = 0x%x\n", read_register(NPC_REGNUM),
755 read_register(PC_REGNUM), read_register(PC2_REGNUM));
760 From = (UDIUInt32 *)®isters[4 * GR1_REGNUM];
761 To.Space = UDI29KGlobalRegs;
764 if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
765 error("UDIWrite() failed in udi_store_regisetrs");
767 #if defined(GR64_REGNUM)
769 /* Global registers gr64-gr95 */
771 From = (UDIUInt32 *)®isters[4 * GR64_REGNUM];
772 To.Space = UDI29KGlobalRegs;
775 if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
776 error("UDIWrite() failed in udi_store_regisetrs");
778 #endif /* GR64_REGNUM */
780 /* Global registers gr96-gr127 */
782 From = (UDIUInt32 *)®isters[4 * GR96_REGNUM];
783 To.Space = UDI29KGlobalRegs;
786 if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
787 error("UDIWrite() failed in udi_store_regisetrs");
789 /* Local Registers */
791 From = (UDIUInt32 *)®isters[4 * LR0_REGNUM];
792 To.Space = UDI29KLocalRegs;
795 if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
796 error("UDIWrite() failed in udi_store_regisetrs");
799 /* Protected Special Registers */ /* VAB through TMR */
801 From = (UDIUInt32 *)®isters[4 * SR_REGNUM(0)];
802 To.Space = UDI29KSpecialRegs;
805 if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
806 error("UDIWrite() failed in udi_store_regisetrs");
808 /* PC0, PC1, PC2 possibly as shadow registers */
810 From = (UDIUInt32 *)®isters[4 * SR_REGNUM(10)];
811 To.Space = UDI29KSpecialRegs;
814 To.Offset = 20; /* SPC0 */
816 To.Offset = 10; /* PC0 */
817 if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
818 error("UDIWrite() failed in udi_store_regisetrs");
822 From = (UDIUInt32 *)®isters[4 * SR_REGNUM(13)];
823 To.Space = UDI29KSpecialRegs;
826 if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
827 error("UDIWrite() failed in udi_store_regisetrs");
829 /* Unprotected Special Registers */
831 From = (UDIUInt32 *)®isters[4 * SR_REGNUM(128)];
832 To.Space = UDI29KSpecialRegs;
835 if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
836 error("UDIWrite() failed in udi_store_regisetrs");
838 registers_changed ();
841 /****************************************************** UDI_PREPARE_TO_STORE */
842 /* Get ready to modify the registers array. On machines which store
843 individual registers, this doesn't need to do anything. On machines
844 which store all the registers in one fell swoop, this makes sure
845 that registers contains all the registers from the program being
849 udi_prepare_to_store ()
851 /* Do nothing, since we can store individual regs */
854 /********************************************************** TRANSLATE_ADDR */
859 #if defined(ULTRA3) && defined(KERNEL_DEBUGGING)
860 /* Check for a virtual address in the kernel */
861 /* Assume physical address of ublock is in paddr_u register */
862 /* FIXME: doesn't work for user virtual addresses */
863 if (addr >= UVADDR) {
864 /* PADDR_U register holds the physical address of the ublock */
865 CORE_ADDR i = (CORE_ADDR)read_register(PADDR_U_REGNUM);
866 return(i + addr - (CORE_ADDR)UVADDR);
874 /************************************************* UDI_XFER_INFERIOR_MEMORY */
875 /* FIXME! Merge these two. */
877 udi_xfer_inferior_memory (memaddr, myaddr, len, write)
884 memaddr = translate_addr(memaddr);
887 return udi_write_inferior_memory (memaddr, myaddr, len);
889 return udi_read_inferior_memory (memaddr, myaddr, len);
892 /********************************************************** UDI_FILES_INFO */
896 printf ("\tAttached to UDI socket to %s and running program %s.\n",
897 udi_config_id, prog_name);
900 /**************************************************** UDI_INSERT_BREAKPOINT */
902 udi_insert_breakpoint (addr, contents_cache)
904 char *contents_cache;
909 for (cnt = 0; cnt < BKPT_TABLE_SIZE; cnt++)
910 if (bkpt_table[cnt].Type == 0) /* Find first free slot */
913 if(cnt >= BKPT_TABLE_SIZE)
914 error("Too many breakpoints set");
916 bkpt_table[cnt].Addr.Offset = addr;
917 bkpt_table[cnt].Addr.Space = UDI29KIRAMSpace;
918 bkpt_table[cnt].PassCount = 1;
919 bkpt_table[cnt].Type = UDIBreakFlagExecute;
921 err = UDISetBreakpoint(bkpt_table[cnt].Addr,
922 bkpt_table[cnt].PassCount,
923 bkpt_table[cnt].Type,
924 &bkpt_table[cnt].BreakId);
926 if (err == 0) return 0; /* Success */
928 bkpt_table[cnt].Type = 0;
929 error("UDISetBreakpoint returned error code %d\n", err);
932 /**************************************************** UDI_REMOVE_BREAKPOINT */
934 udi_remove_breakpoint (addr, contents_cache)
936 char *contents_cache;
941 for (cnt = 0; cnt < BKPT_TABLE_SIZE; cnt++)
942 if (bkpt_table[cnt].Addr.Offset == addr) /* Find matching breakpoint */
945 if(cnt >= BKPT_TABLE_SIZE)
946 error("Can't find breakpoint in table");
948 bkpt_table[cnt].Type = 0;
950 err = UDIClearBreakpoint(bkpt_table[cnt].BreakId);
951 if (err == 0) return 0; /* Success */
953 error("UDIClearBreakpoint returned error code %d\n", err);
957 udi_kill(arg,from_tty)
964 UDIStop does not really work as advertised. It causes the TIP to close it's
965 connection, which usually results in GDB dying with a SIGPIPE. For now, we
966 just invoke udi_close, which seems to get things right.
974 printf("Target has been stopped.");
982 Load a program into the target. Args are: `program {options}'. The options
983 are used to control loading of the program, and are NOT passed onto the
984 loaded code as arguments. (You need to use the `run' command to do that.)
987 -ms %d Set mem stack size to %d
988 -rs %d Set regular stack size to %d
989 -i send init info (default)
990 -noi don't send init info
991 -[tT] Load Text section
992 -[dD] Load Data section
993 -[bB] Load BSS section
994 -[lL] Load Lit section
998 download(load_arg_string, from_tty)
999 char *load_arg_string;
1002 #define DEFAULT_MEM_STACK_SIZE 0x6000
1003 #define DEFAULT_REG_STACK_SIZE 0x2000
1010 int load_text = 1, load_data = 1, load_bss = 1, load_lit = 1;
1012 address_ranges[0].Space = UDI29KIRAMSpace;
1013 address_ranges[0].Offset = 0xffffffff;
1014 address_ranges[0].Size = 0;
1016 address_ranges[1].Space = UDI29KDRAMSpace;
1017 address_ranges[1].Offset = 0xffffffff;
1018 address_ranges[1].Size = 0;
1020 stack_sizes[0] = DEFAULT_REG_STACK_SIZE;
1021 stack_sizes[1] = DEFAULT_MEM_STACK_SIZE;
1025 filename = strtok(load_arg_string, " \t");
1027 error ("Must specify at least a file name with the load command");
1029 filename = tilde_expand (filename);
1030 make_cleanup (free, filename);
1032 while (token = strtok (NULL, " \t"))
1034 if (token[0] == '-')
1038 if (strcmp (token, "ms") == 0)
1039 stack_sizes[1] = atol (strtok (NULL, " \t"));
1040 else if (strcmp (token, "rs") == 0)
1041 stack_sizes[0] = atol (strtok (NULL, " \t"));
1044 load_text = load_data = load_bss = load_lit = 0;
1067 error ("Unknown UDI load option -%s", token-1);
1074 pbfd = bfd_openr (filename, 0);
1077 perror_with_name (filename);
1079 make_cleanup (bfd_close, pbfd);
1084 if (!bfd_check_format (pbfd, bfd_object))
1085 error ("It doesn't seem to be an object file");
1087 for (section = pbfd->sections; section; section = section->next)
1089 if (bfd_get_section_flags (pbfd, section) & SEC_ALLOC)
1093 unsigned long section_size, section_end;
1094 const char *section_name;
1096 section_name = bfd_get_section_name (pbfd, section);
1097 if (strcmp (section_name, ".text") == 0 && !load_text)
1099 else if (strcmp (section_name, ".data") == 0 && !load_data)
1101 else if (strcmp (section_name, ".bss") == 0 && !load_bss)
1103 else if (strcmp (section_name, ".lit") == 0 && !load_lit)
1106 To.Offset = bfd_get_section_vma (pbfd, section);
1107 section_size = bfd_section_size (pbfd, section);
1108 section_end = To.Offset + section_size;
1110 printf("[Loading section %s at %x (%d bytes)]\n",
1115 if (bfd_get_section_flags (pbfd, section) & SEC_CODE)
1117 To.Space = UDI29KIRAMSpace;
1119 address_ranges[0].Offset = min (address_ranges[0].Offset,
1121 address_ranges[0].Size = max (address_ranges[0].Size,
1123 - address_ranges[0].Offset);
1127 To.Space = UDI29KDRAMSpace;
1129 address_ranges[1].Offset = min (address_ranges[1].Offset,
1131 address_ranges[1].Size = max (address_ranges[1].Size,
1133 - address_ranges[1].Offset);
1136 if (bfd_get_section_flags (pbfd, section) & SEC_LOAD) /* Text, data or lit */
1142 while (section_size > 0)
1146 Count = min (section_size, 1024);
1148 bfd_get_section_contents (pbfd, section, buffer, fptr,
1151 err = UDIWrite ((UDIHostMemPtr)buffer, /* From */
1154 (UDISizeT)1, /* Size */
1155 &Count, /* CountDone */
1156 (UDIBool)0); /* HostEndian */
1158 error ("UDIWrite failed, error = %d", err);
1162 section_size -= Count;
1168 unsigned long zero = 0;
1170 /* Write a zero byte at the vma */
1171 err = UDIWrite ((UDIHostMemPtr)&zero, /* From */
1173 (UDICount)1, /* Count */
1174 (UDISizeT)4, /* Size */
1175 &Count, /* CountDone */
1176 (UDIBool)0); /* HostEndian */
1178 error ("UDIWrite failed, error = %d", err);
1183 /* Now, duplicate it for the length of the BSS */
1184 err = UDICopy (From, /* From */
1186 (UDICount)(section_size/4 - 1), /* Count */
1187 (UDISizeT)4, /* Size */
1188 &Count, /* CountDone */
1189 (UDIBool)1); /* Direction */
1195 xerr = UDIGetErrorMsg(err, 100, message, &Count);
1197 fprintf (stderr, "Error is %s\n", message);
1199 fprintf (stderr, "xerr is %d\n", xerr);
1200 error ("UDICopy failed, error = %d", err);
1207 entry.Space = UDI29KIRAMSpace;
1208 entry.Offset = bfd_get_start_address (pbfd);
1213 /* User interface to download an image into the remote target. See download()
1214 * for details on args.
1218 udi_load(args, from_tty)
1222 download (args, from_tty);
1224 symbol_file_add (strtok (args, " \t"), from_tty, 0, 0, 0, 0);
1227 /*************************************************** UDI_WRITE_INFERIOR_MEMORY
1228 ** Copy LEN bytes of data from debugger memory at MYADDR
1229 to inferior's memory at MEMADDR. Returns number of bytes written. */
1231 udi_write_inferior_memory (memaddr, myaddr, len)
1241 UDICount CountDone = 0;
1242 UDIBool HostEndian = 0;
1244 To.Space = udi_memory_space(memaddr);
1245 From = (UDIUInt32*)myaddr;
1247 while (nwritten < len)
1248 { Count = len - nwritten;
1249 if (Count > MAXDATA) Count = MAXDATA;
1250 To.Offset = memaddr + nwritten;
1251 if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
1252 { error("UDIWrite() failed in udi_write_inferrior_memory");
1256 { nwritten += CountDone;
1263 /**************************************************** UDI_READ_INFERIOR_MEMORY
1264 ** Read LEN bytes from inferior memory at MEMADDR. Put the result
1265 at debugger address MYADDR. Returns number of bytes read. */
1267 udi_read_inferior_memory(memaddr, myaddr, len)
1277 UDICount CountDone = 0;
1278 UDIBool HostEndian = 0;
1281 From.Space = udi_memory_space(memaddr);
1282 To = (UDIUInt32*)myaddr;
1285 { Count = len - nread;
1286 if (Count > MAXDATA) Count = MAXDATA;
1287 From.Offset = memaddr + nread;
1288 if(err = UDIRead(From, To, Count, Size, &CountDone, HostEndian))
1289 { error("UDIRead() failed in udi_read_inferrior_memory");
1293 { nread += CountDone;
1300 /********************************************************************* WARNING
1305 error ("ERROR while loading program into remote TIP: $d\n", num);
1309 /*****************************************************************************/
1310 /* Fetch a single register indicatated by 'regno'.
1311 * Returns 0/-1 on success/failure.
1314 fetch_register (regno)
1322 UDIBool HostEndian = 0;
1326 if (regno == GR1_REGNUM)
1328 From.Space = UDI29KGlobalRegs;
1331 else if (regno >= GR96_REGNUM && regno < GR96_REGNUM + 32)
1333 From.Space = UDI29KGlobalRegs;
1334 From.Offset = (regno - GR96_REGNUM) + 96;;
1337 #if defined(GR64_REGNUM)
1339 else if (regno >= GR64_REGNUM && regno < GR64_REGNUM + 32 )
1341 From.Space = UDI29KGlobalRegs;
1342 From.Offset = (regno - GR64_REGNUM) + 64;
1345 #endif /* GR64_REGNUM */
1347 else if (regno >= LR0_REGNUM && regno < LR0_REGNUM + 128)
1349 From.Space = UDI29KLocalRegs;
1350 From.Offset = (regno - LR0_REGNUM);
1352 else if (regno>=FPE_REGNUM && regno<=EXO_REGNUM)
1355 supply_register(160 + (regno - FPE_REGNUM),(char *) &val);
1356 return; /* Pretend Success */
1360 From.Space = UDI29KSpecialRegs;
1361 From.Offset = regnum_to_srnum(regno);
1364 if (err = UDIRead(From, &To, Count, Size, &CountDone, HostEndian))
1365 error("UDIRead() failed in udi_fetch_registers");
1367 supply_register(regno, (char *) &To);
1370 printf("Fetching register %s = 0x%x\n", reg_names[regno], To);
1372 /*****************************************************************************/
1373 /* Store a single register indicated by 'regno'.
1374 * Returns 0/-1 on success/failure.
1377 store_register (regno)
1386 UDIBool HostEndian = 0;
1388 From = read_register (regno); /* get data value */
1391 printf("Storing register %s = 0x%x\n", reg_names[regno], From);
1393 if (regno == GR1_REGNUM)
1394 { To.Space = UDI29KGlobalRegs;
1396 result = UDIWrite(&From, To, Count, Size, &CountDone, HostEndian);
1397 /* Setting GR1 changes the numbers of all the locals, so invalidate the
1398 * register cache. Do this *after* calling read_register, because we want
1399 * read_register to return the value that write_register has just stuffed
1400 * into the registers array, not the value of the register fetched from
1403 registers_changed ();
1405 #if defined(GR64_REGNUM)
1406 else if (regno >= GR64_REGNUM && regno < GR64_REGNUM + 32 )
1407 { To.Space = UDI29KGlobalRegs;
1408 To.Offset = (regno - GR64_REGNUM) + 64;
1409 result = UDIWrite(&From, To, Count, Size, &CountDone, HostEndian);
1411 #endif /* GR64_REGNUM */
1412 else if (regno >= GR96_REGNUM && regno < GR96_REGNUM + 32)
1413 { To.Space = UDI29KGlobalRegs;
1414 To.Offset = (regno - GR96_REGNUM) + 96;
1415 result = UDIWrite(&From, To, Count, Size, &CountDone, HostEndian);
1417 else if (regno >= LR0_REGNUM && regno < LR0_REGNUM + 128)
1418 { To.Space = UDI29KLocalRegs;
1419 To.Offset = (regno - LR0_REGNUM);
1420 result = UDIWrite(&From, To, Count, Size, &CountDone, HostEndian);
1422 else if (regno>=FPE_REGNUM && regno<=EXO_REGNUM)
1424 return 0; /* Pretend Success */
1426 else /* An unprotected or protected special register */
1427 { To.Space = UDI29KSpecialRegs;
1428 To.Offset = regnum_to_srnum(regno);
1429 result = UDIWrite(&From, To, Count, Size, &CountDone, HostEndian);
1434 error("UDIWrite() failed in store_registers");
1438 /********************************************************** REGNUM_TO_SRNUM */
1440 * Convert a gdb special register number to a 29000 special register number.
1443 regnum_to_srnum(regno)
1447 case VAB_REGNUM: return(0);
1448 case OPS_REGNUM: return(1);
1449 case CPS_REGNUM: return(2);
1450 case CFG_REGNUM: return(3);
1451 case CHA_REGNUM: return(4);
1452 case CHD_REGNUM: return(5);
1453 case CHC_REGNUM: return(6);
1454 case RBP_REGNUM: return(7);
1455 case TMC_REGNUM: return(8);
1456 case TMR_REGNUM: return(9);
1457 case NPC_REGNUM: return(USE_SHADOW_PC ? (20) : (10));
1458 case PC_REGNUM: return(USE_SHADOW_PC ? (21) : (11));
1459 case PC2_REGNUM: return(USE_SHADOW_PC ? (22) : (12));
1460 case MMU_REGNUM: return(13);
1461 case LRU_REGNUM: return(14);
1462 case IPC_REGNUM: return(128);
1463 case IPA_REGNUM: return(129);
1464 case IPB_REGNUM: return(130);
1465 case Q_REGNUM: return(131);
1466 case ALU_REGNUM: return(132);
1467 case BP_REGNUM: return(133);
1468 case FC_REGNUM: return(134);
1469 case CR_REGNUM: return(135);
1470 case FPE_REGNUM: return(160);
1471 case INTE_REGNUM: return(161);
1472 case FPS_REGNUM: return(162);
1473 case EXO_REGNUM:return(164);
1475 return(255); /* Failure ? */
1478 /****************************************************************************/
1480 * Determine the Target memory space qualifier based on the addr.
1481 * FIXME: Can't distinguis I_ROM/D_ROM.
1482 * FIXME: Doesn't know anything about I_CACHE/D_CACHE.
1485 udi_memory_space(addr)
1488 UDIUInt32 tstart = IMemStart;
1489 UDIUInt32 tend = tstart + IMemSize;
1490 UDIUInt32 dstart = DMemStart;
1491 UDIUInt32 dend = tstart + DMemSize;
1492 UDIUInt32 rstart = RMemStart;
1493 UDIUInt32 rend = tstart + RMemSize;
1495 if (((UDIUInt32)addr >= tstart) && ((UDIUInt32)addr < tend)) {
1496 return UDI29KIRAMSpace;
1497 } else if (((UDIUInt32)addr >= dstart) && ((UDIUInt32)addr < dend)) {
1498 return UDI29KDRAMSpace;
1499 } else if (((UDIUInt32)addr >= rstart) && ((UDIUInt32)addr < rend)) {
1500 /* FIXME: how do we determine between D_ROM and I_ROM */
1501 return UDI29KIROMSpace;
1502 } else /* FIXME: what do me do now? */
1503 return UDI29KDRAMSpace; /* Hmmm! */
1505 /*********************************************************************** STUBS
1508 void convert16() {;}
1509 void convert32() {;}
1510 FILE* EchoFile = 0; /* used for debugging */
1511 int QuietMode = 0; /* used for debugging */
1513 /****************************************************************************/
1515 * Define the target subroutine names
1517 static struct target_ops udi_ops = {
1519 "Remote UDI connected TIP",
1520 "Remote debug an AMD 29k using UDI socket connection to TIP process",
1527 udi_fetch_registers,
1528 udi_store_registers,
1529 udi_prepare_to_store,
1530 udi_xfer_inferior_memory,
1532 udi_insert_breakpoint,
1533 udi_remove_breakpoint,
1534 0, /* termial_init */
1535 0, /* terminal_inferior */
1536 0, /* terminal_ours_for_output */
1537 0, /* terminal_ours */
1538 0, /* terminal_info */
1539 udi_kill, /* FIXME, kill */
1541 0, /* lookup_symbol */
1542 udi_create_inferior,
1543 udi_mourn, /* mourn_inferior FIXME */
1545 0, /* notice_signals */
1548 1, /* has_all_memory */
1551 1, /* has_registers */
1552 1, /* has_execution */
1554 0, /* sections_end */
1555 OPS_MAGIC, /* Always the last thing */
1558 void _initialize_remote_udi()
1560 add_target (&udi_ops);
1562 add_set_cmd ("remotedebug", no_class, var_boolean,
1564 "Set debugging of UDI I/O.\n\
1565 When enabled, debugging info is displayed.",
1570 #ifdef NO_HIF_SUPPORT
1574 return(0); /* Emulate a failure */