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author | Stu Grossman <grossman@cygnus> | 1992-04-24 05:48:30 +0000 |
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committer | Stu Grossman <grossman@cygnus> | 1992-04-24 05:48:30 +0000 |
commit | 9bddba9ad7f5e1ae0fb1f2f826f5767de303bf4c (patch) | |
tree | 76d7cb424914fc47290e06901961975aa3d2d913 | |
parent | 850b104079c793890237ab5e10cee19abd4058a1 (diff) | |
download | gdb-9bddba9ad7f5e1ae0fb1f2f826f5767de303bf4c.zip gdb-9bddba9ad7f5e1ae0fb1f2f826f5767de303bf4c.tar.gz gdb-9bddba9ad7f5e1ae0fb1f2f826f5767de303bf4c.tar.bz2 |
29K/UDI remote debugger interface.
-rw-r--r-- | gdb/remote-udi.c | 1346 |
1 files changed, 1346 insertions, 0 deletions
diff --git a/gdb/remote-udi.c b/gdb/remote-udi.c new file mode 100644 index 0000000..d1233f4 --- /dev/null +++ b/gdb/remote-udi.c @@ -0,0 +1,1346 @@ +/* + - Remote debugging interface for Am290*0 running MiniMON monitor, for GDB. + This is like remote.c but expects MiniMON to be running on the Am29000 + target hardware. + - Originally written by Daniel Mann at AMD for 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. + + Copyright (C) 1990 Free Software Foundation, Inc. + +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 1, 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; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + + +#include <stdio.h> +#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 "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 char register_valid[]; +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 MAX_BKPT 40 +bkpt_entry_t bkpt_table[MAX_BKPT]; +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; + } + +#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. + */ + +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()"); + + /* 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 (udi_session_id >= 0) + close (udi_session_id); + + if(UDIConnect(udi_config_id, &udi_session_id)) + fprintf(stderr, "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) + perror ("udi_open: error in siginterrupt"); +#endif + + /* Set up read timeout timer. */ + if ((void (*)) signal (SIGALRM, udi_timer) == (void (*)) -1) + perror ("udi_open: error in signal"); +#endif + +#if defined (LOG_FILE) + log_file = fopen (LOG_FILE, "w"); + if (log_file == NULL) + perror (LOG_FILE); +#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; + +#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 ("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; + } + DENTER("udi_fetch_registers()"); + +/* 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"); + else register_valid[4 * GR1_REGNUM] = 1; + +#if defined(GR64_REGNUM) /* Read gr64-127 */ +/* Global Registers gr64-gr95 */ + From.Space = UDI29KGlobalRegs; + From.Offset = 64; + To = ®isters[4 * GR64_REGNUM]; + Count = 32; + if(UDIRead(From, To, Count, Size, &CountDone, HostEndian)) + error("UDIRead() failed in udi_fetch_registers"); + else for(i = 4 * GR64_REGNUM; i < 4*GR64_REGNUM + 32; i++) +#endif /* GR64_REGNUM */ + +/* Global Registers gr96-gr127 */ + From.Space = UDI29KGlobalRegs; + From.Offset = 64; + To = (UDIUInt32*)®isters[4 * GR96_REGNUM]; + Count = 32; + if(UDIRead(From, To, Count, Size, &CountDone, HostEndian)) + error("UDIRead() failed in udi_fetch_registers"); + else for(i = 4 * GR96_REGNUM; i < 4*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"); + else for(i = 4 * LR0_REGNUM; i < 4*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"); + else for(i = 4 * SR_REGNUM(0); i < 4*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*/ + if (USE_SHADOW_PC) /* Let regno_to_srnum() handle the register number */ + { 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"); + else for(i = 4 * SR_REGNUM(128); i < 4*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 (INT_REGNUM, (char *) &val); + supply_register (FPS_REGNUM, (char *) &val); + supply_register (EXO_REGNUM, (char *) &val); + } + + DEXIT("udi_fetch_registerS()"); +} + + +/********************************************************* 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; + } + + DENTER("udi_store_registers()"); + +/* 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 (); + DEXIT("udi_store_registers() failed in udi_store_regisetrs"); +} + +/****************************************************** 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 = 0; + DENTER("udi_insert_breakpoint()"); + + while( cnt < MAX_BKPT) /* find BKPT slot in table */ + if( !(bkpt_table[cnt].Type) ) + break; + else cnt++; + if(cnt >= MAX_BKPT) + { error("Too many breakpoints set"); + DEXIT("udi_insert_breakpoint() failure"); + return 1; /* Failure */ + } + bkpt_table[cnt].Addr.Offset = addr; + bkpt_table[cnt].Addr.Space = UDI29KIRAMSpace; + bkpt_table[cnt].PassCount = 1; + bkpt_table[cnt].Type = UDIBreakFlagExecute; + + if( UDISetBreakpoint(bkpt_table[cnt].Addr, + bkpt_table[cnt].PassCount, + bkpt_table[cnt].Type, + &bkpt_table[cnt].BreakId) ) + { error("UDISetBreakpoint() failed in udi_insert_breakpoint"); + bkpt_table[cnt].Type = 0; + DEXIT("udi_insert_breakpoint() failure"); + return 1; /* Failure */ + } else + { DEXIT("udi_insert_breakpoint() success"); + return 0; /* Success */ + } +} + +/**************************************************** UDI_REMOVE_BREAKPOINT */ +static int +udi_remove_breakpoint (addr, contents_cache) + CORE_ADDR addr; + char *contents_cache; +{ + int cnt = 0; + DENTER("udi_remove_breakpoint()"); + + while( cnt < MAX_BKPT) /* find BKPT slot in table */ + if(bkpt_table[cnt].Addr.Offset = addr ) break; + else cnt++; + if(cnt >= MAX_BKPT) + { error("Can't find breakpoint in table"); + DEXIT("udi_remove_breakpoint() failure"); + return 1; /* Failure */ + } + bkpt_table[cnt].Type = 0; + + if ( !UDIClearBreakpoint(bkpt_table[cnt].BreakId)) { + DEXIT("udi_remove_breakpoint()"); + return 0; /* Success */ + } else { + DEXIT("udi_remove_breakpoint()"); + error("UDIClearBreakpoint() failed in udi_remove_breakpoint"); + return 1; /* Failure */ + } +} + + +/***************************************************************** 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("Kernel not killed, but left in current state.\n"); + printf("Use detach to leave kernel running.\n"); + } +#else + UDIStop(); + 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; + + DENTER("udi_fetch_register()"); + + if (regno == GR1_REGNUM) + { From.Space = UDI29KGlobalRegs; + From.Offset = 1; + result = UDIRead(From, &To, Count, Size, &CountDone, HostEndian); + } + else if (regno >= GR96_REGNUM && regno < GR96_REGNUM + 32) + { From.Space = UDI29KGlobalRegs; + From.Offset = (regno - GR96_REGNUM) + 96;; + result = UDIRead(From, &To, Count, Size, &CountDone, HostEndian); + } +#if defined(GR64_REGNUM) + else if (regno >= GR64_REGNUM && regno < GR64_REGNUM + 32 ) + { From.Space = UDI29KGlobalRegs; + From.Offset = (regno - GR64_REGNUM) + 64; + result = UDIRead(From, &To, Count, Size, &CountDone, HostEndian); + } +#endif /* GR64_REGNUM */ + else if (regno >= LR0_REGNUM && regno < LR0_REGNUM + 128) + { From.Space = UDI29KLocalRegs; + From.Offset = (regno - LR0_REGNUM); + result = UDIRead(From, &To, Count, Size, &CountDone, HostEndian); + } + 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); + result = UDIRead(From, &To, Count, Size, &CountDone, HostEndian); + } + DEXIT("udi_fetch_register()"); + if(result) + { result = -1; + 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 INT_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 Am290*0 using 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 |