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|
/* Remote debugging interface for AMD 29k interfaced via UDI, for GDB.
Copyright 1990, 1992 Free Software Foundation, Inc.
Written by Daniel Mann. Contributed by AMD.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* This is like remote.c but uses the Universal Debug Interface (UDI) to
talk to the target hardware (or simulator). UDI is a TCP/IP based
protocol; for hardware that doesn't run TCP, an interface adapter
daemon talks UDI on one side, and talks to the hardware (typically
over a serial port) on the other side.
- Originally written by Daniel Mann at AMD for MiniMON and gdb 3.91.6.
- David Wood (wood@lab.ultra.nyu.edu) at New York University adapted this
file to gdb 3.95. I was unable to get this working on sun3os4
with termio, only with sgtty. Because we are only attempting to
use this module to debug our kernel, which is already loaded when
gdb is started up, I did not code up the file downloading facilities.
As a result this module has only the stubs to download files.
You should get tagged at compile time if you need to make any
changes/additions.
- Daniel Mann at AMD took the 3.95 adaptions above and replaced
MiniMON interface with UDI-p interface. */
#include "defs.h"
#include "inferior.h"
#include "wait.h"
#include "value.h"
#include <ctype.h>
#include <fcntl.h>
#include <signal.h>
#include <errno.h>
#include <string.h>
#include "terminal.h"
#include "target.h"
#include "29k-share/udi/udiproc.h"
/* access the register store directly, without going through
the normal handler functions. This avoids an extra data copy
*/
/* #define DEBUG 1 /* */
#ifdef DEBUG
# define DENTER(NAME) (printf("Entering %s\n",NAME), fflush(stdout))
# define DEXIT(NAME) (printf("Exiting %s\n",NAME), fflush(stdout))
#else
# define DENTER(NAME)
# define DEXIT(NAME)
#endif
extern int stop_soon_quietly; /* for wait_for_inferior */
extern struct value *call_function_by_hand();
static void udi_resume();
static void udi_fetch_registers ();
static void udi_load();
static int fetch_register ();
static void udi_store_registers ();
static int store_register ();
static int regnum_to_srnum();
static void udi_close ();
static CPUSpace udi_memory_space();
static int udi_write_inferior_memory();
static int udi_read_inferior_memory();
char CoffFileName[100] = "";
/*
* Processor types.
*/
#define TYPE_UNKNOWN 0
#define TYPE_A29000 1
#define TYPE_A29030 2
#define TYPE_A29050 3
static char *processor_name[] = { "Unknown", "Am29000", "Am29030", "Am29050" };
static int processor_type=TYPE_UNKNOWN;
#define FREEZE_MODE (read_register(CPS_REGNUM) && 0x400)
#define USE_SHADOW_PC ((processor_type == TYPE_A29050) && FREEZE_MODE)
#define LLOG_FILE "udi.log"
#if defined (LOG_FILE)
FILE *log_file;
#endif
static int timeout = 5;
extern struct target_ops udi_ops; /* Forward declaration */
/* Special register enumeration.
*/
/******************************************************************* UDI DATA*/
#define MAXDATA 2*1024 /* max UDI[read/write] byte size */
/* Descriptor for I/O to remote machine. Initialize it to -1 so that
udi_open knows that we don't have a file open when the program
starts. */
UDISessionId udi_session_id = -1;
CPUOffset IMemStart = 0;
CPUSizeT IMemSize = 0;
CPUOffset DMemStart = 0;
CPUSizeT DMemSize = 0;
CPUOffset RMemStart = 0;
CPUSizeT RMemSize = 0;
UDIUInt32 CPUPRL;
UDIUInt32 CoProcPRL;
#define SBUF_MAX 1024 /* maximum size of string handling buffer */
char sbuf[SBUF_MAX];
typedef struct bkpt_entry_str
{
UDIResource Addr;
UDIUInt32 PassCount;
UDIBreakType Type;
unsigned int BreakId;
} bkpt_entry_t;
#define BKPT_TABLE_SIZE 40
static bkpt_entry_t bkpt_table[BKPT_TABLE_SIZE];
extern char dfe_errmsg[]; /* error string */
/*********************************************************** SIGNAL SUPPORT */
/* Called when SIGALRM signal sent due to alarm() timeout. */
#ifndef HAVE_TERMIO
#ifndef __STDC__
# ifndef volatile
# define volatile /**/
# endif
#endif
volatile int n_alarms;
static void
udi_timer ()
{
#if 0
if (kiodebug)
printf ("udi_timer called\n");
#endif
n_alarms++;
}
#endif /* HAVE_TERMIO */
/* malloc'd name of the program on the remote system. */
static char *prog_name = NULL;
/* Number of SIGTRAPs we need to simulate. That is, the next
NEED_ARTIFICIAL_TRAP calls to udi_wait should just return
SIGTRAP without actually waiting for anything. */
/******************************************************* UDI_CREATE_INFERIOR */
/* This is called not only when we first attach, but also when the
user types "run" after having attached. */
static void
udi_create_inferior (execfile, args, env)
char *execfile;
char *args;
char **env;
{
DENTER("udi_create_inferior()");
if (execfile)
{ if (prog_name != NULL)
free (prog_name);
prog_name = savestring (execfile, strlen (execfile));
}
if (prog_name == 0 /* || exec_bfd == 0 */ )
error ("No exec file specified");
if (udi_session_id < 0){
printf("UDI connection not open yet.\n");
return;
}
inferior_pid = 40000;
#if defined(ULTRA3) && defined(KERNEL_DEBUGGING)
/* On ultra3 (NYU) we assume the kernel is already running so there is
* no file to download
*/
#else
if(*args == '\0') args = prog_name;
udi_load(args, 0);
#endif /* !ULTRA3 */
/* We will get a task spawn event immediately. */
#ifdef NOTDEF /* start_remote() now does a wait without a resume
so don't use it*/
start_remote ();
#else
init_wait_for_inferior ();
clear_proceed_status ();
proceed(-1,-1,0);
#endif
DEXIT("udi_create_inferior()");
}
/******************************************************* UDI_MOURN_INFERIOR */
static void
udi_mourn()
{
DENTER("udi_mourn()");
pop_target (); /* Pop back to no-child state */
generic_mourn_inferior ();
DEXIT("udi_mourn()");
}
/******************************************************************** UDI_OPEN
** Open a connection to remote TIP.
NAME is the socket domain used for communication with the TIP,
then a space and the socket name or TIP-host name.
'<udi_udi_config_id> [progname]' for example.
*/
/* XXX - need cleanups for udiconnect for various failures!!! */
static char *udi_config_id;
static void
udi_open (name, from_tty)
char *name;
int from_tty;
{
unsigned int prl;
char *p;
int cnt;
UDIMemoryRange KnownMemory[10];
UDIUInt32 ChipVersions[10];
UDIInt NumberOfRanges = 10;
UDIInt NumberOfChips = 10;
UDIPId PId;
UDIUInt32 TIPId, TargetId, DFEId, DFE, TIP, DFEIPCId, TIPIPCId;
DENTER("udi_open()");
target_preopen(from_tty);
/* Find the first whitespace character, it separates udi_config_id
from prog_name. */
if(!name) goto erroid;
for (p = name;
*p != '\0' && !isspace (*p); p++)
;
if (*p == '\0')
erroid:
error("Usage: target udi config_id progname, where config_id appears in udi_soc file");
udi_config_id = (char*)malloc (p - name + 1);
strncpy (udi_config_id, name, p - name);
udi_config_id[p - name] = '\0';
/* Skip over the whitespace after udi_config_id */
for (; isspace (*p); p++)
/*EMPTY*/;
if (prog_name != NULL)
free (prog_name);
prog_name = savestring (p, strlen (p));
if (UDIConnect(udi_config_id, &udi_session_id))
error("UDIConnect() failed: %s\n", dfe_errmsg);
push_target (&udi_ops);
#ifndef HAVE_TERMIO
#ifndef NO_SIGINTERRUPT
/* Cause SIGALRM's to make reads fail with EINTR instead of resuming
the read. */
if (siginterrupt (SIGALRM, 1) != 0)
error ("udi_open: siginterrupt() %s", safe_strerror(errno));
#endif
/* Set up read timeout timer. */
if ((void (*)) signal (SIGALRM, udi_timer) == (void (*)) -1)
error ("udi_open: signal() %s", safe_strerror(errno));
#endif
#if defined (LOG_FILE)
log_file = fopen (LOG_FILE, "w");
if (log_file == NULL)
error ("udi_open: fopen(%s) %s", LOG_FILE, safe_strerror(errno));
#endif
/*
** Initialize target configuration structure (global)
*/
if(UDIGetTargetConfig( KnownMemory, &NumberOfRanges,
ChipVersions, &NumberOfChips))
error ("UDIGetTargetConfig() failed");
if(NumberOfChips > 2)
fprintf(stderr,"Taret has more than one processor\n");
for(cnt=0; cnt<NumberOfRanges; cnt++)
{ switch(KnownMemory[cnt].Space)
{
default: fprintf(stderr, "UDIGetTargetConfig() unknown memory space\n");
break;
case UDI29KCP_S:
break;
case UDI29KIROMSpace:
RMemStart = KnownMemory[cnt].Offset;
RMemSize = KnownMemory[cnt].Size;
break;
case UDI29KIRAMSpace:
IMemStart = KnownMemory[cnt].Offset;
IMemSize = KnownMemory[cnt].Size;
break;
case UDI29KDRAMSpace:
DMemStart = KnownMemory[cnt].Offset;
DMemSize = KnownMemory[cnt].Size;
break;
}
}
/* Determine the processor revision level */
prl = (unsigned int)read_register(CFG_REGNUM) >> 24;
if ((prl&0xe0) == 0)
{ fprintf_filtered(stderr,
"Remote debugging Am29000 rev %c\n",'A'+(prl&0x1f));
processor_type = TYPE_A29000;
} else if ((prl&0xe0) == 0x40) /* 29030 = 0x4* */
{ fprintf_filtered(stderr,
"Remote debugging Am2903* rev %c\n",'A'+(prl&0x1f));
processor_type = TYPE_A29030;
} else if ((prl&0xe0) == 0x20) /* 29050 = 0x2* */
{ fprintf_filtered(stderr,
"Remote debugging Am29050 rev %c\n",'A'+(prl&0x1f));
processor_type = TYPE_A29050;
} else {
processor_type = TYPE_UNKNOWN;
fprintf_filtered(stderr,"WARNING: processor type unknown.\n");
}
if(UDICreateProcess(&PId))
fprintf(stderr, "UDICreateProcess() failed\n");
/* Print out some stuff, letting the user now what's going on */
if(UDICapabilities( &TIPId, &TargetId, DFEId, DFE, &TIP, &DFEIPCId,
&TIPIPCId, sbuf))
error ("UDICapabilities() failed");
if (from_tty) {
printf_filtered("Remote debugging an %s connected via UDI socket,\n\
DFE-IPC version %x.%x.%x TIP-IPC version %x.%x.%x TIP version %x.%x.%x\n %s\n",
processor_name[processor_type],
(DFEIPCId>>8)&0xf, (DFEIPCId>>4)&0xf, DFEIPCId&0xf,
(TIPIPCId>>8)&0xf, (TIPIPCId>>4)&0xf, TIPIPCId&0xf,
(TargetId>>8)&0xf, (TargetId>>4)&0xf, TargetId&0xf,
sbuf);
#ifdef ULTRA3
/* FIXME: can this restriction be removed? */
printf_filtered("Remote debugging using virtual addresses works only\n");
printf_filtered(" when virtual addresses map 1:1 to physical addresses.\n");
#endif
}
#ifdef ULTRA3
if (processor_type != TYPE_A29050) {
fprintf_filtered(stderr,
"Freeze-mode debugging can only be done on an Am29050,\n");
fprintf_filtered(stderr,
" unless GDB is being used with a 29K simulator.\n");
}
#endif
}
/******************************************************************* UDI_CLOSE
Close the open connection to the TIP process.
Use this when you want to detach and do something else
with your gdb. */
static void
udi_close (quitting) /*FIXME: how is quitting used */
int quitting;
{
int Terminate = -1;
DENTER("udi_close()");
if (udi_session_id < 0)
error ("Can't close udi connection: not debugging remotely.");
/* We should never get here if there isn't something valid in
udi_session_id.
if(UDIDisconnect(udi_stream, Terminate);)
error ("UDIDisconnect() failed in udi_close");
/* Do not try to close udi_session_id again, later in the program. */
udi_session_id = -1;
inferior_pid = 0;
#if defined (LOG_FILE)
if (ferror (log_file))
printf ("Error writing log file.\n");
if (fclose (log_file) != 0)
printf ("Error closing log file.\n");
#endif
printf_filtered (" Ending remote debugging\n");
DEXIT("udi_close()");
}
/**************************************************************** UDI_ATACH */
/* Attach to a program that is already loaded and running
* Upon exiting the process's execution is stopped.
*/
static void
udi_attach (args, from_tty)
char *args;
int from_tty;
{
UDIResource From;
UDIInt32 PC_adds;
UDICount Count = 1;
UDISizeT Size = 4;
UDICount CountDone;
UDIBool HostEndian = 0;
DENTER("udi_attach()");
if (udi_session_id < 0)
printf ("UDI connection not opened yet, use the 'target udi' command.\n");
if (from_tty)
printf ("Attaching to remote program %s...\n", prog_name);
mark_breakpoints_out ();
UDIStop();
From.Space = 11;
From.Offset = UDI29KSpecialRegs;
if(UDIRead(From, &PC_adds, Count, Size, &CountDone, HostEndian))
error ("UDIRead failed in udi_attach");
printf ("Remote process is now halted, pc1 = 0x%x.\n", PC_adds);
DEXIT("udi_attach()");
}
/************************************************************* UDI_DETACH */
/* Terminate the open connection to the TIP process.
Use this when you want to detach and do something else
with your gdb. Leave remote process running (with no breakpoints set). */
static void
udi_detach (args,from_tty)
char *args;
int from_tty;
{
DENTER("udi_dettach()");
remove_breakpoints(); /* Just in case there were any left in */
if(UDIDisconnect(udi_session_id))
error ("UDIDisconnect() failed in udi_detach");
pop_target(); /* calls udi_close to do the real work */
if (from_tty)
printf ("Ending remote debugging\n");
DEXIT("udi_dettach()");
}
/****************************************************************** UDI_RESUME
** Tell the remote machine to resume. */
static void
udi_resume (step, sig)
int step, sig;
{
UDIError tip_error;
UDIUInt32 Steps = 1;
UDIStepType StepType = UDIStepNatural;
UDIRange Range;
DENTER("udi_resume()");
if (step) /* step 1 instruction */
{ tip_error = tip_error = UDIStep(Steps, StepType, Range);
if(tip_error)fprintf(stderr, "UDIStep() error = %d\n", tip_error);
if(tip_error)error ("failed in udi_resume");
}
else
{ if(UDIExecute())
error ("UDIExecute() failed in udi_resume");
}
DEXIT("udi_resume()");
}
/******************************************************************** UDI_WAIT
** Wait until the remote machine stops, then return,
storing status in STATUS just as `wait' would. */
static int
udi_wait (status)
WAITTYPE *status;
{
UDIInt32 MaxTime;
UDIPId PId;
UDIInt32 StopReason;
UDISizeT CountDone;
int old_timeout = timeout;
int old_immediate_quit = immediate_quit;
int i;
DENTER("udi_wait()");
WSETEXIT ((*status), 0);
/* wait for message to arrive. It should be:
If the target stops executing, udi_wait() should return.
*/
timeout = 0; /* Wait indefinetly for a message */
immediate_quit = 1; /* Helps ability to QUIT */
while(1)
{
i = 0;
MaxTime = UDIWaitForever;
UDIWait(MaxTime, &PId, &StopReason);
QUIT; /* Let user quit if they want */
switch (StopReason & 0xff)
{
default:
goto halted;
case UDIStdoutReady:
if(UDIGetStdout(sbuf, (UDISizeT)SBUF_MAX, &CountDone))
error("UDIGetStdin() failed in udi_wait");
while(CountDone--)putc(sbuf[i++], stdout);
fflush(stdout);
break;
case UDIStderrReady:
UDIGetStderr(sbuf, (UDISizeT)SBUF_MAX, &CountDone);
while(CountDone--)putc(sbuf[i++], stderr);
fflush(stderr);
fflush(stderr);
break;
case UDIStdinNeeded:
printf("DEBUG: stdin requested ... continue\n");
/* UDIPutStdin(sbuf, (UDISizeT)i, &CountDone); */
break;
case UDIStdinModeX:
break;
}
continue;
}
halted:
if (StopReason & 0xff == UDITrapped ) /* lower 8-bits == 0 */
{
if (StopReason >> 24 == 0)
{ printf("Am290*0 received vector number 0 (break point)\n");
WSETSTOP ((*status), SIGTRAP);
}
else if (StopReason >> 24 == 1)
{ printf("Am290*0 received vector 1\n");
WSETSTOP ((*status), SIGBUS);
}
else if (StopReason >> 24 == 3
|| StopReason >> 24 == 4)
{ printf("Am290*0 received vector number %d\n",
StopReason >> 24);
WSETSTOP ((*status), SIGFPE);
}
else if (StopReason >> 24 == 5)
{ printf("Am290*0 received vector number %d\n",
StopReason >> 24);
WSETSTOP ((*status), SIGILL);
}
else if (StopReason >> 24 >= 6
&& StopReason >> 24 <= 11)
{ printf("Am290*0 received vector number %d\n",
StopReason >> 24);
WSETSTOP ((*status), SIGSEGV);
}
else if (StopReason >> 24 == 12
|| StopReason >> 24 == 13)
{ printf("Am290*0 received vector number %d\n",
StopReason >> 24);
WSETSTOP ((*status), SIGILL);
}
else if ((StopReason & 0xff) == 14)
{ printf("Am290*0 received vector number %d\n",
StopReason >> 24);
WSETSTOP ((*status), SIGALRM);
}
else if ((StopReason & 0xff) == 15)
WSETSTOP ((*status), SIGTRAP);
else if ((StopReason >> 24) >= 16
&& (StopReason >> 24) <= 21)
{ printf("Am290*0 received vector number %d\n",
StopReason >> 24);
WSETSTOP ((*status), SIGINT);
}
else if ((StopReason & 0xff) == 22)
{ printf("Am290*0 received vector number %d\n",
StopReason >> 24);
WSETSTOP ((*status), SIGILL);
}
else if ((StopReason & 0xff) == 77)
WSETSTOP ((*status), SIGTRAP);
else
exit:
WSETEXIT ((*status), 0);
}
else if ((StopReason & 0xff) == UDIBreak)
WSETSTOP ((*status), SIGTRAP);
else if ((StopReason & 0xff) == UDINotExecuting)
WSETSTOP ((*status), SIGTERM);
else if ((StopReason & 0xff) == UDIRunning)
WSETSTOP ((*status), SIGILL);
else if ((StopReason & 0xff) == UDIStopped)
WSETSTOP ((*status), SIGTSTP);
else if ((StopReason & 0xff) == UDIWarned)
WSETSTOP ((*status), SIGLOST);
else if ((StopReason & 0xff) == UDIStepped)
WSETSTOP ((*status), SIGTRAP);
else if ((StopReason & 0xff) == UDIWaiting)
WSETSTOP ((*status), SIGSTOP);
else if ((StopReason & 0xff) == UDIHalted)
WSETSTOP ((*status), SIGKILL);
else
WSETEXIT ((*status), 0);
timeout = old_timeout; /* Restore original timeout value */
immediate_quit = old_immediate_quit;
DEXIT("udi_wait()");
return 0;
}
/********************************************************** UDI_FETCH_REGISTERS
* Read a remote register 'regno'.
* If regno==-1 then read all the registers.
*/
static void
udi_fetch_registers (regno)
int regno;
{
UDIResource From;
UDIUInt32 *To;
UDICount Count;
UDISizeT Size = 4;
UDICount CountDone;
UDIBool HostEndian = 0;
int i;
if (regno >= 0) {
fetch_register(regno);
return;
}
/* Gr1/rsp */
From.Space = UDI29KGlobalRegs;
From.Offset = 1;
To = (UDIUInt32 *)®isters[4 * GR1_REGNUM];
Count = 1;
if (UDIRead(From, To, Count, Size, &CountDone, HostEndian))
error("UDIRead() failed in udi_fetch_registers");
register_valid[GR1_REGNUM] = 1;
#if defined(GR64_REGNUM) /* Read gr64-127 */
/* Global Registers gr64-gr95 */
From.Space = UDI29KGlobalRegs;
From.Offset = 64;
To = (UDIUInt32 *)®isters[4 * GR64_REGNUM];
Count = 32;
if (UDIRead(From, To, Count, Size, &CountDone, HostEndian))
error("UDIRead() failed in udi_fetch_registers");
for (i = GR64_REGNUM; i < GR64_REGNUM + 32; i++)
register_valid[i] = 1;
#endif /* GR64_REGNUM */
/* Global Registers gr96-gr127 */
From.Space = UDI29KGlobalRegs;
From.Offset = 96;
To = (UDIUInt32 *)®isters[4 * GR96_REGNUM];
Count = 32;
if (UDIRead(From, To, Count, Size, &CountDone, HostEndian))
error("UDIRead() failed in udi_fetch_registers");
for (i = GR96_REGNUM; i < GR96_REGNUM + 32; i++)
register_valid[i] = 1;
/* Local Registers */
From.Space = UDI29KLocalRegs;
From.Offset = 0;
To = (UDIUInt32 *)®isters[4 * LR0_REGNUM];
Count = 128;
if (UDIRead(From, To, Count, Size, &CountDone, HostEndian))
error("UDIRead() failed in udi_fetch_registers");
for (i = LR0_REGNUM; i < LR0_REGNUM + 128; i++)
register_valid[i] = 1;
/* Protected Special Registers */
From.Space = UDI29KSpecialRegs;
From.Offset = 0;
To = (UDIUInt32 *)®isters[4 * SR_REGNUM(0)];
Count = 15;
if (UDIRead(From, To, Count, Size, &CountDone, HostEndian))
error("UDIRead() failed in udi_fetch_registers");
for (i = SR_REGNUM(0); i < SR_REGNUM(0) + 15; i++)
register_valid[i] = 1;
if (USE_SHADOW_PC) { /* Let regno_to_srnum() handle the register number */
fetch_register(NPC_REGNUM);
fetch_register(PC_REGNUM);
fetch_register(PC2_REGNUM);
/* Unprotected Special Registers sr128-sr135 */
From.Space = UDI29KSpecialRegs;
From.Offset = 128;
To = (UDIUInt32 *)®isters[4 * SR_REGNUM(128)];
Count = 135-128 + 1;
if (UDIRead(From, To, Count, Size, &CountDone, HostEndian))
error("UDIRead() failed in udi_fetch_registers");
for (i = SR_REGNUM(128); i < SR_REGNUM(128) + 135-128+1; i++)
register_valid[i] = 1;
}
/* There doesn't seem to be any way to get these. */
{
int val = -1;
supply_register (FPE_REGNUM, (char *) &val);
supply_register (INTE_REGNUM, (char *) &val);
supply_register (FPS_REGNUM, (char *) &val);
supply_register (EXO_REGNUM, (char *) &val);
}
}
/********************************************************* UDI_STORE_REGISTERS
** Store register regno into the target.
* If regno==-1 then store all the registers.
*/
static void
udi_store_registers (regno)
int regno;
{
UDIUInt32 *From;
UDIResource To;
UDICount Count;
UDISizeT Size = 4;
UDICount CountDone;
UDIBool HostEndian = 0;
if (regno >= 0)
{
store_register(regno);
return;
}
/* Gr1/rsp */
From = (UDIUInt32 *)®isters[4 * GR1_REGNUM];
To.Space = UDI29KGlobalRegs;
To.Offset = 1;
Count = 1;
if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
error("UDIWrite() failed in udi_store_regisetrs");
#if defined(GR64_REGNUM)
/* Global registers gr64-gr95 */
From = (UDIUInt32 *)®isters[4 * GR64_REGNUM];
To.Space = UDI29KGlobalRegs;
To.Offset = 64;
Count = 32;
if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
error("UDIWrite() failed in udi_store_regisetrs");
#endif /* GR64_REGNUM */
/* Global registers gr96-gr127 */
From = (UDIUInt32 *)®isters[4 * GR96_REGNUM];
To.Space = UDI29KGlobalRegs;
To.Offset = 96;
Count = 32;
if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
error("UDIWrite() failed in udi_store_regisetrs");
/* Local Registers */
From = (UDIUInt32 *)®isters[4 * LR0_REGNUM];
To.Space = UDI29KLocalRegs;
To.Offset = 0;
Count = 128;
if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
error("UDIWrite() failed in udi_store_regisetrs");
/* Protected Special Registers */ /* VAB through TMR */
From = (UDIUInt32 *)®isters[4 * SR_REGNUM(0)];
To.Space = UDI29KSpecialRegs;
To.Offset = 0;
Count = 10;
if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
error("UDIWrite() failed in udi_store_regisetrs");
/* PC0, PC1, PC2 possibly as shadow registers */
From = (UDIUInt32 *)®isters[4 * SR_REGNUM(10)];
To.Space = UDI29KSpecialRegs;
Count = 3;
if (USE_SHADOW_PC)
To.Offset = 20; /* SPC0 */
else
To.Offset = 10; /* PC0 */
if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
error("UDIWrite() failed in udi_store_regisetrs");
/* LRU and MMU */
From = (UDIUInt32 *)®isters[4 * SR_REGNUM(13)];
To.Space = UDI29KSpecialRegs;
To.Offset = 13;
Count = 2;
if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
error("UDIWrite() failed in udi_store_regisetrs");
/* Unprotected Special Registers */
From = (UDIUInt32 *)®isters[4 * SR_REGNUM(128)];
To.Space = UDI29KSpecialRegs;
To.Offset = 128;
Count = 135-128 +1;
if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
error("UDIWrite() failed in udi_store_regisetrs");
registers_changed ();
}
/****************************************************** UDI_PREPARE_TO_STORE */
/* Get ready to modify the registers array. On machines which store
individual registers, this doesn't need to do anything. On machines
which store all the registers in one fell swoop, this makes sure
that registers contains all the registers from the program being
debugged. */
static void
udi_prepare_to_store ()
{
/* Do nothing, since we can store individual regs */
}
/********************************************************** TRANSLATE_ADDR */
static CORE_ADDR
translate_addr(addr)
CORE_ADDR addr;
{
#if defined(ULTRA3) && defined(KERNEL_DEBUGGING)
/* Check for a virtual address in the kernel */
/* Assume physical address of ublock is in paddr_u register */
/* FIXME: doesn't work for user virtual addresses */
if (addr >= UVADDR) {
/* PADDR_U register holds the physical address of the ublock */
CORE_ADDR i = (CORE_ADDR)read_register(PADDR_U_REGNUM);
return(i + addr - (CORE_ADDR)UVADDR);
} else {
return(addr);
}
#else
return(addr);
#endif
}
/************************************************* UDI_XFER_INFERIOR_MEMORY */
/* FIXME! Merge these two. */
static int
udi_xfer_inferior_memory (memaddr, myaddr, len, write)
CORE_ADDR memaddr;
char *myaddr;
int len;
int write;
{
memaddr = translate_addr(memaddr);
if (write)
return udi_write_inferior_memory (memaddr, myaddr, len);
else
return udi_read_inferior_memory (memaddr, myaddr, len);
}
/********************************************************** UDI_FILES_INFO */
static void
udi_files_info ()
{
printf ("\tAttached to UDI socket to %s and running program %s.\n",
udi_config_id, prog_name);
}
/**************************************************** UDI_INSERT_BREAKPOINT */
static int
udi_insert_breakpoint (addr, contents_cache)
CORE_ADDR addr;
char *contents_cache;
{
int cnt;
UDIError err;
for (cnt = 0; cnt < BKPT_TABLE_SIZE; cnt++)
if (bkpt_table[cnt].Type == 0) /* Find first free slot */
break;
if(cnt >= BKPT_TABLE_SIZE)
error("Too many breakpoints set");
bkpt_table[cnt].Addr.Offset = addr;
bkpt_table[cnt].Addr.Space = UDI29KIRAMSpace;
bkpt_table[cnt].PassCount = 1;
bkpt_table[cnt].Type = UDIBreakFlagExecute;
err = UDISetBreakpoint(bkpt_table[cnt].Addr,
bkpt_table[cnt].PassCount,
bkpt_table[cnt].Type,
&bkpt_table[cnt].BreakId);
if (err == 0) return 0; /* Success */
bkpt_table[cnt].Type = 0;
error("UDISetBreakpoint returned error code %d\n", err);
}
/**************************************************** UDI_REMOVE_BREAKPOINT */
static int
udi_remove_breakpoint (addr, contents_cache)
CORE_ADDR addr;
char *contents_cache;
{
int cnt;
UDIError err;
for (cnt = 0; cnt < BKPT_TABLE_SIZE; cnt++)
if (bkpt_table[cnt].Addr.Offset == addr) /* Find matching breakpoint */
break;
if(cnt >= BKPT_TABLE_SIZE)
error("Can't find breakpoint in table");
bkpt_table[cnt].Type = 0;
err = UDIClearBreakpoint(bkpt_table[cnt].BreakId);
if (err == 0) return 0; /* Success */
error("UDIClearBreakpoint returned error code %d\n", err);
}
/***************************************************************** UDI_KILL */
static void
udi_kill(arg,from_tty)
char *arg;
int from_tty;
{
char buf[4];
DENTER("udi_kill()");
#if defined(ULTRA3) && defined(KERNEL_DEBUGGING)
/* We don't ever kill the kernel */
if (from_tty) {
printf_filtered("Kernel not killed, but left in current state.\n");
printf_filtered("Use detach to leave kernel running.\n");
}
#else
UDIStop();
inferior_pid = 0;
if (from_tty) {
printf("Target has been stopped.");
}
pop_target();
#endif
DEXIT("udi_kill()");
}
/***************************************************************** UDI_LOAD */
/*
* Load a program into the target.
*/
static void
udi_load(arg_string,from_tty)
char *arg_string;
int from_tty;
{
#define MAX_TOKENS 25
#define BUFFER_SIZE 256
int token_count;
char *token[MAX_TOKENS];
char cmd_line[BUFFER_SIZE];
dont_repeat ();
#if defined(KERNEL_DEBUGGING) && defined(ULTRA3)
printf("The kernel had better be loaded already! Loading not done.\n");
#else
if (arg_string == 0)
error ("The load command takes a file name");
arg_string = tilde_expand (arg_string);
sprintf(cmd_line,"y %s %s", prog_name, arg_string);
token_count = 0;
token[0] = cmd_line;
if (cmd_line[0] != '\0')
{ token[token_count] = strtok(cmd_line, " \t,;\n\r");
if (token[token_count] != NULL)
{ do {
token_count = token_count + 1;
token[token_count] = strtok((char *) NULL, " \t,;\n\r");
} while ((token[token_count] != NULL) &&
(token_count < MAX_TOKENS));
}
else
*token[0] = '\0';
}
make_cleanup (free, arg_string);
QUIT;
immediate_quit++;
if(yank_cmd(token, token_count))
error("Failure when tring to load program");
immediate_quit--;
symbol_file_add (arg_string, from_tty, 0, 0, 0, 0);/*DEBUG need to add text_addr */
#endif
}
/*************************************************** UDI_WRITE_INFERIOR_MEMORY
** Copy LEN bytes of data from debugger memory at MYADDR
to inferior's memory at MEMADDR. Returns number of bytes written. */
static int
udi_write_inferior_memory (memaddr, myaddr, len)
CORE_ADDR memaddr;
char *myaddr;
int len;
{
int nwritten = 0;
UDIUInt32 *From;
UDIResource To;
UDICount Count;
UDISizeT Size = 1;
UDICount CountDone = 0;
UDIBool HostEndian = 0;
/* DENTER("udi_write_inferior_memory()"); */
To.Space = udi_memory_space(memaddr);
From = (UDIUInt32*)myaddr;
while (nwritten < len)
{ Count = len - nwritten;
if (Count > MAXDATA) Count = MAXDATA;
To.Offset = memaddr + nwritten;
if(UDIWrite(From, To, Count, Size, &CountDone, HostEndian))
{ error("UDIWrite() failed in udi_write_inferrior_memory");
break;
}
else
{ nwritten += CountDone;
From += CountDone;
}
}
/* DEXIT("udi_write_inferior_memory()"); */
return(nwritten);
}
/**************************************************** UDI_READ_INFERIOR_MEMORY
** Read LEN bytes from inferior memory at MEMADDR. Put the result
at debugger address MYADDR. Returns number of bytes read. */
static int
udi_read_inferior_memory(memaddr, myaddr, len)
CORE_ADDR memaddr;
char *myaddr;
int len;
{
int nread = 0;
UDIResource From;
UDIUInt32 *To;
UDICount Count;
UDISizeT Size = 1;
UDICount CountDone = 0;
UDIBool HostEndian = 0;
/* DENTER("udi_read_inferior_memory()"); */
From.Space = udi_memory_space(memaddr);
To = (UDIUInt32*)myaddr;
while (nread < len)
{ Count = len - nread;
if (Count > MAXDATA) Count = MAXDATA;
From.Offset = memaddr + nread;
if(UDIRead(From, To, Count, Size, &CountDone, HostEndian))
{ error("UDIWrite() failed in udi_read_inferrior_memory");
break;
}
else
{ nread += CountDone;
To += CountDone;
}
}
return(nread);
}
/********************************************************************* WARNING
*/
udi_warning(num)
int num;
{
error ("ERROR while loading program into remote TIP: $d\n", num);
}
/*****************************************************************************/
/* Fetch a single register indicatated by 'regno'.
* Returns 0/-1 on success/failure.
*/
static int
fetch_register (regno)
int regno;
{
UDIResource From;
UDIUInt32 To;
UDICount Count = 1;
UDISizeT Size = 4;
UDICount CountDone;
UDIBool HostEndian = 0;
int result;
if (regno == GR1_REGNUM)
{
From.Space = UDI29KGlobalRegs;
From.Offset = 1;
}
else if (regno >= GR96_REGNUM && regno < GR96_REGNUM + 32)
{
From.Space = UDI29KGlobalRegs;
From.Offset = (regno - GR96_REGNUM) + 96;;
}
#if defined(GR64_REGNUM)
else if (regno >= GR64_REGNUM && regno < GR64_REGNUM + 32 )
{
From.Space = UDI29KGlobalRegs;
From.Offset = (regno - GR64_REGNUM) + 64;
}
#endif /* GR64_REGNUM */
else if (regno >= LR0_REGNUM && regno < LR0_REGNUM + 128)
{
From.Space = UDI29KLocalRegs;
From.Offset = (regno - LR0_REGNUM);
}
else if (regno>=FPE_REGNUM && regno<=EXO_REGNUM)
{
int val = -1;
supply_register(160 + (regno - FPE_REGNUM),(char *) &val);
return 0; /* Pretend Success */
}
else
{
From.Space = UDI29KSpecialRegs;
From.Offset = regnum_to_srnum(regno);
}
if (UDIRead(From, &To, Count, Size, &CountDone, HostEndian))
error("UDIRead() failed in udi_fetch_registers");
supply_register(regno, (char *) &To);
return result;
}
/*****************************************************************************/
/* Store a single register indicated by 'regno'.
* Returns 0/-1 on success/failure.
*/
static int
store_register (regno)
int regno;
{
int result;
UDIUInt32 From;
UDIResource To;
UDICount Count = 1;
UDISizeT Size = 4;
UDICount CountDone;
UDIBool HostEndian = 0;
DENTER("store_register()");
From = read_register (regno); /* get data value */
if (regno == GR1_REGNUM)
{ To.Space = UDI29KGlobalRegs;
To.Offset = 1;
result = UDIWrite(&From, To, Count, Size, &CountDone, HostEndian);
/* Setting GR1 changes the numbers of all the locals, so invalidate the
* register cache. Do this *after* calling read_register, because we want
* read_register to return the value that write_register has just stuffed
* into the registers array, not the value of the register fetched from
* the inferior.
*/
registers_changed ();
}
#if defined(GR64_REGNUM)
else if (regno >= GR64_REGNUM && regno < GR64_REGNUM + 32 )
{ To.Space = UDI29KGlobalRegs;
To.Offset = (regno - GR64_REGNUM) + 64;
result = UDIWrite(&From, To, Count, Size, &CountDone, HostEndian);
}
#endif /* GR64_REGNUM */
else if (regno >= GR96_REGNUM && regno < GR96_REGNUM + 32)
{ To.Space = UDI29KGlobalRegs;
To.Offset = (regno - GR96_REGNUM) + 96;
result = UDIWrite(&From, To, Count, Size, &CountDone, HostEndian);
}
else if (regno >= LR0_REGNUM && regno < LR0_REGNUM + 128)
{ To.Space = UDI29KLocalRegs;
To.Offset = (regno - LR0_REGNUM);
result = UDIWrite(&From, To, Count, Size, &CountDone, HostEndian);
}
else if (regno>=FPE_REGNUM && regno<=EXO_REGNUM)
{
return 0; /* Pretend Success */
}
else /* An unprotected or protected special register */
{ To.Space = UDI29KSpecialRegs;
To.Offset = regnum_to_srnum(regno);
result = UDIWrite(&From, To, Count, Size, &CountDone, HostEndian);
}
DEXIT("store_register()");
if(result)
{ result = -1;
error("UDIWrite() failed in store_registers");
}
return result;
}
/********************************************************** REGNUM_TO_SRNUM */
/*
* Convert a gdb special register number to a 29000 special register number.
*/
static int
regnum_to_srnum(regno)
int regno;
{
switch(regno) {
case VAB_REGNUM: return(0);
case OPS_REGNUM: return(1);
case CPS_REGNUM: return(2);
case CFG_REGNUM: return(3);
case CHA_REGNUM: return(4);
case CHD_REGNUM: return(5);
case CHC_REGNUM: return(6);
case RBP_REGNUM: return(7);
case TMC_REGNUM: return(8);
case TMR_REGNUM: return(9);
case NPC_REGNUM: return(USE_SHADOW_PC ? (20) : (10));
case PC_REGNUM: return(USE_SHADOW_PC ? (21) : (11));
case PC2_REGNUM: return(USE_SHADOW_PC ? (22) : (12));
case MMU_REGNUM: return(13);
case LRU_REGNUM: return(14);
case IPC_REGNUM: return(128);
case IPA_REGNUM: return(129);
case IPB_REGNUM: return(130);
case Q_REGNUM: return(131);
case ALU_REGNUM: return(132);
case BP_REGNUM: return(133);
case FC_REGNUM: return(134);
case CR_REGNUM: return(135);
case FPE_REGNUM: return(160);
case INTE_REGNUM: return(161);
case FPS_REGNUM: return(162);
case EXO_REGNUM:return(164);
default:
return(255); /* Failure ? */
}
}
/****************************************************************************/
/*
* Determine the Target memory space qualifier based on the addr.
* FIXME: Can't distinguis I_ROM/D_ROM.
* FIXME: Doesn't know anything about I_CACHE/D_CACHE.
*/
static CPUSpace
udi_memory_space(addr)
CORE_ADDR *addr;
{
UDIUInt32 tstart = IMemStart;
UDIUInt32 tend = tstart + IMemSize;
UDIUInt32 dstart = DMemStart;
UDIUInt32 dend = tstart + DMemSize;
UDIUInt32 rstart = RMemStart;
UDIUInt32 rend = tstart + RMemSize;
if (((UDIUInt32)addr >= tstart) && ((UDIUInt32)addr < tend)) {
return UDI29KIRAMSpace;
} else if (((UDIUInt32)addr >= dstart) && ((UDIUInt32)addr < dend)) {
return UDI29KDRAMSpace;
} else if (((UDIUInt32)addr >= rstart) && ((UDIUInt32)addr < rend)) {
/* FIXME: how do we determine between D_ROM and I_ROM */
return UDI29KIROMSpace;
} else /* FIXME: what do me do now? */
return UDI29KDRAMSpace; /* Hmmm! */
}
/*********************************************************************** STUBS
*/
void convert16() {;}
void convert32() {;}
FILE* EchoFile = 0; /* used for debugging */
int QuietMode = 0; /* used for debugging */
/****************************************************************************/
/*
* Define the target subroutine names
*/
static struct target_ops udi_ops = {
"udi", "Remote UDI connected TIP",
"Remote debug an AMD 29k using UDI socket connection to TIP process",
udi_open, udi_close,
udi_attach, udi_detach, udi_resume, udi_wait,
udi_fetch_registers, udi_store_registers,
udi_prepare_to_store, 0, 0, /* conv_to, conv_from */
udi_xfer_inferior_memory,
udi_files_info,
udi_insert_breakpoint, udi_remove_breakpoint, /* Breakpoints */
0, 0, 0, 0, 0, /* Terminal handling */
udi_kill, /* FIXME, kill */
udi_load,
0, /* lookup_symbol */
udi_create_inferior, /* create_inferior */
udi_mourn, /* mourn_inferior FIXME */
process_stratum, 0, /* next */
1, 1, 1, 1, 1, /* all mem, mem, stack, regs, exec */
0, 0, /* Section pointers */
OPS_MAGIC, /* Always the last thing */
};
void _initialize_remote_udi()
{
add_target (&udi_ops);
}
#ifdef NO_HIF_SUPPORT
service_HIF(msg)
union msg_t *msg;
{
return(0); /* Emulate a failure */
}
#endif
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