-/* Memory-access and commands for remote es1800 processes, for GDB.
- Copyright (C) 1988, 1992 Free Software Foundation, Inc.
-
- This file is added to GDB to make it possible to do debugging via an
- ES-1800 emulator. The code was originally written by Johan Holmberg
- TT/SJ Ericsson Telecom AB and later modified by Johan Henriksson
- TT/SJ. It was modified for gdb 4.0 by TX/DK Jan Nordenand by TX/DKG
- Harald Johansen.
-
-This file is part of GDB.
-
-GDB 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.
-
-GDB 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 GDB; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-
-/* Emulator communication protocol.
- All values are encoded in ascii hex digits.
-
- Request
-Command
-Reply
- read registers:
-DR<cr>
- - 0 - - 1 - - 2 - - 3 - - 4 - - 5 - -- 6 - - 7 -
-D = XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
-A = XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
- PC = XXXXXX SSP = XXXXXX USP = XXXXXX SR = XXXXXXXX
- >
-Each byte of register data is described by two hex digits.
-
- write regs
-D0=XXXXXXXX<cr>
- >D1=XXXXXXXX<cr>
- >D2=XXXXXXXX<cr>
- >D3=XXXXXXXX<cr>
- >D4=XXXXXXXX<cr>
- >D5=XXXXXXXX<cr>
- >D6=XXXXXXXX<cr>
- >D7=XXXXXXXX<cr>
- >A0=XXXXXXXX<cr>
- >A1=XXXXXXXX<cr>
- >A2=XXXXXXXX<cr>
- >A3=XXXXXXXX<cr>
- >A4=XXXXXXXX<cr>
- >A5=XXXXXXXX<cr>
- >A6=XXXXXXXX<cr>
- >A7=XXXXXXXX<cr>
- >SR=XXXXXXXX<cr>
- >PC=XXXXXX<cr>
- >
-Each byte of register data is described by two hex digits.
-
- read mem
-@.BAA..AA
-$FFFFFFXX
- >
-AA..AA is address, XXXXXXX is the contents
-
- write mem
- @.BAA..AA=$XXXXXXXX
- >
-AA..AA is address, XXXXXXXX is data
-
- cont
-PC=$AA..AA
- >RBK
-R>
-AA..AA is address to resume. If AA..AA is omitted, resume at same address.
-
- step
-PC=$AA..AA
- >STP
-R>
-AA..AA is address to resume. If AA..AA is omitted, resume at same address.
-
- kill req
-STP
- >
-*/
-
-
-#include <stdio.h>
-#include <signal.h>
-#include <sys/ioctl.h>
-#include <sys/file.h>
-#include <errno.h>
-#include <ctype.h>
-#include <string.h>
-#include <setjmp.h>
-#include <fcntl.h>
-#include "defs.h"
-#include "frame.h"
-#include "inferior.h"
-#include "target.h"
-#include "wait.h"
-#include "terminal.h"
-#include "command.h"
-
-#ifdef USG
-#include <sys/types.h>
-#include <sgtty.h>
-#endif
-
-#include <signal.h>
-
-/* External variables referenced. */
-
-extern bfd *exec_bfd;
-
-/* Prototypes for local functions */
-
-static void
-es1800_child_detach PARAMS ((char *, int));
-
-static void
-es1800_child_open PARAMS ((char *, int));
-
-static void
-es1800_transparent PARAMS ((char *, int));
-
-static void
-es1800_create_inferior PARAMS ((char *, char *, char **));
-
-static void
-es1800_load PARAMS ((char *, int));
-
-static void
-es1800_kill PARAMS ((void));
-
-static int
-verify_break PARAMS ((int));
-
-static int
-es1800_remove_breakpoint PARAMS ((CORE_ADDR, char *));
-
-static int
-es1800_insert_breakpoint PARAMS ((CORE_ADDR, char *));
-
-static void
-es1800_files_info PARAMS ((struct target_ops *));
-
-static int
-es1800_xfer_inferior_memory PARAMS ((CORE_ADDR, char *, int, int,
- struct target_ops *));
-
-static void
-es1800_prepare_to_store PARAMS ((void));
-
-static int
-es1800_wait PARAMS ((WAITTYPE *));
-
-static void
-es1800_resume PARAMS ((int, int));
-
-static void
-es1800_detach PARAMS ((char *, int));
-
-static void
-es1800_attach PARAMS ((char *, int));
-
-static int
-damn_b PARAMS ((char *));
-
-static void
-es1800_open PARAMS ((char *, int));
-
-static void
-es1800_timer PARAMS ((void));
-
-static void
-es1800_reset PARAMS ((char *));
-
-static void
-es1800_request_quit PARAMS ((void));
-
-static int
-readchar PARAMS ((void));
-
-static void
-expect PARAMS ((char *, int));
-
-static void
-expect_prompt PARAMS ((void));
-
-static void
-download PARAMS ((FILE *, int, int));
-
-#if 0
-static void
-bfd_copy PARAMS ((bfd *, bfd *));
-#endif
-
-static void
-get_break_addr PARAMS ((int, CORE_ADDR *));
-
-static int
-fromhex PARAMS ((int));
-
-static int
-tohex PARAMS ((int));
-
-static void
-es1800_close PARAMS ((int));
-
-static void
-es1800_fetch_registers PARAMS ((void));
-
-static void
-es1800_fetch_register PARAMS ((int));
-
-static void
-es1800_store_register PARAMS ((int));
-
-static void
-es1800_read_bytes PARAMS ((CORE_ADDR, char *, int));
-
-static void
-es1800_write_bytes PARAMS ((CORE_ADDR, char *, int));
-
-static void
-send_with_reply PARAMS ((char *, char *, int));
-
-static void
-send_command PARAMS ((char *));
-
-static void
-send PARAMS ((char *));
-
-static void
-getmessage PARAMS ((char *, int));
-
-static void
-es1800_mourn_inferior PARAMS ((void));
-
-static void
-es1800_create_break_insn PARAMS ((char *, int));
-
-static void
-es1800_init_break PARAMS ((char *, int));
-
-/* Local variables */
-
-#define LOG_FILE "es1800.log"
-#if defined (LOG_FILE)
-static FILE *log_file;
-#endif
-
-extern struct target_ops es1800_ops; /* Forward decl */
-extern struct target_ops es1800_child_ops; /* Forward decl */
-
-static int kiodebug;
-static int timeout = 100;
-static char *savename; /* Name of i/o device used */
-static TERMINAL es1800_sg_save; /* Save stty state */
-static int es1800_fc_save; /* Save fcntl state */
-
-/* indicates that the emulator uses 32-bit data-adress (68020-mode)
- instead of 24-bit (68000 -mode) */
-
-static int m68020;
-
-#define MODE (m68020 ? "M68020" : "M68000" )
-#define ES1800_BREAK_VEC (0xf)
-
-/* Descriptor for I/O to remote machine. Initialize it to -1 so that
- es1800_open knows that we don't have a file open when the program
- starts. */
-
-static int es1800_desc = -1;
-
-#define PBUFSIZ 1000
-#define HDRLEN sizeof("@.BAAAAAAAA=$VV\r")
-
-/* Maximum number of bytes to read/write at once. The value here
- is chosen to fill up a packet. */
-
-#define MAXBUFBYTES ((PBUFSIZ-150)*16/75 )
-
-static int es1800_break_vec = 0;
-static char es1800_break_insn[2];
-static long es1800_break_address;
-static void (*old_sigint)(); /* Old signal-handler for sigint */
-static jmp_buf interrupt;
-
-/* Local signalhandler to allow breaking tranfers or program run.
- Rely on global variables: old_sigint(), interrupt */
-
-static void
-es1800_request_quit ()
-{
- /* restore original signalhandler */
- signal (SIGINT, old_sigint);
- longjmp (interrupt, 1);
-}
-
-
-/* Reset emulator.
- Sending reset character(octal 32) to emulator.
- quit - return to '(esgdb)' prompt or continue */
-
-static void
-es1800_reset (quit)
- char *quit;
-{
- char buf[80];
-
- if (quit)
- {
- printf ("\nResetting emulator... ");
- }
- strcpy (buf, "\032");
- send (buf);
- expect_prompt ();
- if (quit)
- {
- error ("done\n");
- }
-}
-
-
-/* Called when SIGALRM signal sent due to alarm() timeout.
- Rely on global variables: timeout */
-
-#ifndef HAVE_TERMIO
-
-static void
-es1800_timer ()
-{
- if (kiodebug)
- {
- printf ("es1800_timer called\n");
- }
- alarm (timeout);
-}
-
-#endif /* HAVE_TERMIO */
-
-
-/* Open a connection to a remote debugger and push the new target
- onto the stack. Check if the emulator is responding and find out
- what kind of processor the emulator is connected to.
- Initiate the breakpoint handling in the emulator.
-
- name - the filename used for communication (ex. '/dev/tta')
- from_tty - says whether to be verbose or not */
-
-static void
-es1800_open (name, from_tty)
- char *name;
- int from_tty;
-{
- TERMINAL sg;
- char buf[PBUFSIZ];
- char *p;
- int i, fcflag;
- char *baudrate;
-
- m68020 = 0;
-
- if (!name) /* no device name given in target command */
- {
- error_no_arg ("serial port device name");
- }
- baudrate = baud_rate ? baud_rate : "19200"; /* default baudrate = 19200 */
-
- target_preopen (from_tty);
- es1800_close (0);
-
- /* open the device and configure it for communication */
-
-#ifndef DEBUG_STDIN
-
- es1800_desc = open (name, O_RDWR);
- if (es1800_desc < 0)
- {
- perror_with_name (name);
- }
- savename = savestring (name, strlen (name));
-
- if (ioctl (es1800_desc, TIOCGETP, &sg) == -1)
- {
- perror_with_name (name);
- }
- es1800_sg_save = sg;
-
- if ((fcflag = fcntl (es1800_desc, F_GETFL, 0)) == -1)
- {
- perror_with_name ("fcntl serial");
- }
- es1800_fc_save = fcflag;
-
- fcflag = (fcflag & (FREAD | FWRITE)); /* mask out any funny stuff */
- if (fcntl (es1800_desc, F_SETFL, fcflag) == -1)
- {
- perror_with_name ("fcntl serial");
- }
-
-#ifdef HAVE_TERMIO
- sg.c_cc[VMIN] = 0; /* read with timeout. */
- sg.c_cc[VTIME] = timeout * 10;
- sg.c_lflag &= ~(ICANON | ECHO);
- sg.c_cflag = (sg.c_cflag & ~CBAUD) | damn_b (baudrate);
-#else
- sg.sg_ispeed = damn_b (baudrate);
- sg.sg_ospeed = damn_b (baudrate);
- sg.sg_flags = CBREAK+TANDEM;
-#endif
-
- if ((ioctl (es1800_desc, TIOCSETP, &sg)) == -1)
- {
- perror ("es1800_open: error in ioctl");
- }
-
-#endif /* DEBUG_STDIN */
-
- push_target (&es1800_ops); /* Switch to using remote target now */
- if (from_tty)
- {
- printf ("Remote ES1800 debugging using %s\n", name);
- }
-
-#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 ("es1800_open: error in siginterrupt");
- }
-
-#endif /* NO_SIGINTERRUPT */
-
- /* Set up read timeout timer. */
-
- if ((void(*)()) signal (SIGALRM, es1800_timer) == (void(*)()) -1)
- {
- perror ("es1800_open: error in signal");
- }
-
-#endif /* HAVE_TERMIO */
-
-
-#if defined (LOG_FILE)
-
- log_file = fopen (LOG_FILE, "w");
- if (log_file == NULL)
- {
- perror_with_name (LOG_FILE);
- }
-
-#endif /* LOG_FILE */
-
- /* Hello? Are you there?, also check mode */
-
- /* send_with_reply( "DB 0 TO 1", buf, sizeof(buf)); */
- /* for (p = buf, i = 0; *p++ =='0';) */ /* count the number of zeros */
- /* i++; */
-
- send ("\032");
- getmessage (buf, sizeof (buf)); /* send reset character */
-
- if (from_tty)
- {
- printf ("Checking mode.... ");
- }
- /* m68020 = (i==8); */ /* if eight zeros then we are in m68020 mode */
-
- /* What kind of processor am i talking to ?*/
- p = buf;
- while (*p++ != '\n') {;}
- while (*p++ != '\n') {;}
- while (*p++ != '\n') {;}
- for (i = 0; i < 20; i++, p++) {;}
- m68020 = !strncmp (p, "68020", 5);
- if (from_tty)
- {
- printf ("You are in %s(%c%c%c%c%c)-mode\n", MODE, p[0], p[1], p[2],
- p[3], p[4]);
- }
-
- /* if no init_break statement is present in .gdb file we have to check
- whether to download a breakpoint routine or not */
-
-#if 0
- if ((es1800_break_vec == 0) || (verify_break (es1800_break_vec) != 0)
- && query ("No breakpoint routine in ES 1800 emulator!\nDownload a breakpoint routine to the emulator? "))
- {
- CORE_ADDR memaddress;
- printf ("Give the start address of the breakpoint routine: ");
- scanf ("%li", &memaddress);
- es1800_init_break ((es1800_break_vec ? es1800_break_vec :
- ES1800_BREAK_VEC), memaddress);
- }
-#endif
-
-}
-
-/* Close out all files and local state before this target loses control.
- quitting - are we quitting gdb now? */
-
-static void
-es1800_close (quitting)
- int quitting;
-{
- if (es1800_desc >= 0)
- {
- printf ("\nClosing connection to emulator...\n");
- ioctl (es1800_desc, TIOCSETP, &es1800_sg_save);
- fcntl (es1800_desc,F_SETFL, es1800_fc_save);
- close (es1800_desc);
- es1800_desc = -1;
- }
- if (savename != NULL)
- {
- free (savename);
- }
- savename = NULL;
-
-#if defined (LOG_FILE)
-
- if (log_file != NULL)
- {
- if (ferror (log_file))
- {
- printf ("Error writing log file.\n");
- }
- if (fclose (log_file) != 0)
- {
- printf ("Error closing log file.\n");
- }
- log_file = NULL;
- }
-
-#endif /* LOG_FILE */
-
-}
-
-/* damn_b()
-
- Translate baud rates from integers to damn B_codes. Unix should
- have outgrown this crap years ago, but even POSIX wouldn't buck it.
- rate - the baudrate given as a string
- return value: the baudrate as a B_code */
-
-#ifndef B19200
-# define B19200 EXTA
-#endif
-#ifndef B38400
-# define B38400 EXTB
-#endif
-
-struct
-{
- char *rate,
- damn_b;
-} baudtab[] = {
- {"0", B0},
- {"50", B50},
- {"75", B75},
- {"110", B110},
- {"134", B134},
- {"150", B150},
- {"200", B200},
- {"300", B300},
- {"600", B600},
- {"1200", B1200},
- {"1800", B1800},
- {"2400", B2400},
- {"4800", B4800},
- {"9600", B9600},
- {"19200", B19200},
- {"38400", B38400},
- {0, -1},
-};
-
-static int
-damn_b (rate)
- char *rate;
-{
- int i;
-
- for (i = 0; baudtab[i].rate != 0; i++)
- {
- if (STREQ (rate, baudtab[i].rate))
- {
- return (baudtab[i].damn_b);
- }
- }
- error ("Illegal baudrate");
-}
-
-
-/* Attaches to a process on the target side
- proc_id - the id of the process to be attached.
- from_tty - says whether to be verbose or not */
-
-static void
-es1800_attach (args, from_tty)
- char *args;
- int from_tty;
-{
- error ("Cannot attach to pid %s, this feature is not implemented yet.",
- args);
-}
-
-
-/* Takes a program previously attached to and detaches it.
- We better not have left any breakpoints
- in the program or it'll die when it hits one.
- Close the open connection to the remote debugger.
- Use this when you want to detach and do something else
- with your gdb.
-
- args - arguments given to the 'detach' command
- from_tty - says whether to be verbose or not */
-
-static void
-es1800_detach (args, from_tty)
- char *args;
- int from_tty;
-{
- if (args)
- {
- error ("Argument given to \"detach\" when remotely debugging.");
- }
- pop_target ();
- if (from_tty)
- {
- printf ("Ending es1800 remote debugging.\n");
- }
-}
-
-
-/* Tell the remote machine to resume.
- step - single-step or run free
- siggnal - the signal value to be given to the target (0 = no signal) */
-
-static void
-es1800_resume (step, siggnal)
- int step;
- int siggnal;
-{
- char buf[PBUFSIZ];
-
- if (siggnal)
- {
- error ("Can't send signals to a remote system.");
- }
- if (step)
- {
- strcpy (buf,"STP\r");
- send (buf);
- }
- else
- {
- send_command ("RBK");
- }
-}
-
-/* Wait until the remote machine stops, then return,
- storing status in STATUS just as `wait' would.
- status - */
-
-static int
-es1800_wait (status)
- WAITTYPE *status;
-{
- unsigned char buf[PBUFSIZ];
- int old_timeout = timeout;
-
- WSETEXIT ((*status), 0);
- timeout = 0; /* Don't time out -- user program is running. */
- if (!setjmp (interrupt))
- {
- old_sigint = signal (SIGINT, es1800_request_quit);
- while (1)
- {
- getmessage (buf, sizeof(buf));
- if (strncmp ( buf, "\r\n* BREAK *", 11) == 0)
- {
- WSETSTOP ((*status), SIGTRAP);
- send_command ("STP"); /* Restore stack and PC and such */
- if (m68020)
- {
- send_command ("STP");
- }
- break;
- }
- if (strncmp (buf, "STP\r\n ", 6) == 0)
- {
- WSETSTOP ((*status), SIGTRAP);
- break;
- }
- if (buf[strlen (buf) - 2] == 'R')
- {
- printf ("Unexpected emulator reply: \n%s\n", buf);
- }
- else
- {
- printf ("Unexpected stop: \n%s\n", buf);
- WSETSTOP ((*status), SIGQUIT);
- break;
- }
- }
- }
- else
- {
- fflush (stdin);
- printf ("\nStopping emulator...");
- if (!setjmp (interrupt))
- {
- old_sigint = signal (SIGINT, es1800_request_quit);
- send_command ("STP");
- printf (" emulator stopped\n");
- WSETSTOP ((*status), SIGINT);
- }
- else
- {
- fflush (stdin);
- es1800_reset ((char*) 1);
- }
- }
- signal (SIGINT, old_sigint);
- timeout = old_timeout;
- return (0);
-}
-
-
-/* Fetch register values from remote machine.
- regno - the register to be fetched (fetch all registers if -1) */
-
-static void
-es1800_fetch_register (regno)
- int regno;
-{
- char buf[PBUFSIZ];
- int k;
- int r;
- char *p;
- static char regtab[18][4] =
- {
- "D0 ", "D1 ", "D2 ", "D3 ", "D4 ", "D5 ", "D6 ", "D7 ",
- "A0 ", "A1 ", "A2 ", "A3 ", "A4 ", "A5 ", "A6 ", "SSP",
- "SR ", "PC "
- };
-
- if ((regno < 15) || (regno == 16) || (regno == 17))
- {
- r = regno * 4;
- send_with_reply (regtab[regno], buf, sizeof (buf));
- p = buf;
- for (k = 0; k < 4; k++)
- {
- if ((p[k*2 + 1] == 0) || (p[k*2 + 2] == 0))
- {
- error ("Emulator reply is too short: %s", buf);
- }
- registers[r++] = (fromhex (p[k*2 + 1]) * 16) + fromhex (p[k*2 + 2]);
- }
- }
- else
- {
- es1800_fetch_registers ();
- }
-}
-
-/* Read the remote registers into REGISTERS.
- Always fetches all registers. */
-
-static void
-es1800_fetch_registers ()
-{
- char buf[PBUFSIZ];
- char SR_buf[PBUFSIZ];
- int i;
- int k;
- int r;
- char *p;
-
- send_with_reply ("DR", buf, sizeof (buf));
-
- /* Reply is edited to a string that describes registers byte by byte,
- each byte encoded as two hex characters. */
-
- p = buf;
- r = 0;
-
- /* parsing row one - D0-D7-registers */
-
- while (*p++ != '\n') {;}
- for (i = 4; i < 70; i += (i == 39 ? 3 : 1))
- {
- for (k = 0; k < 4; k++)
- {
- if (p[i+0] == 0 || p[i+1] == 0)
- {
- error ("Emulator reply is too short: %s", buf);
- }
- registers[r++] = (fromhex (p[i+0]) * 16) + fromhex (p[i+1]);
- i += 2;
- }
- }
- p += i;
-
- /* parsing row two - A0-A6-registers */
-
- while (*p++ != '\n') {;}
- for (i = 4; i < 61; i += (i == 39 ? 3 : 1))
- {
- for (k = 0; k < 4; k++)
- {
- if (p[i+0] == 0 || p[i+1] == 0)
- {
- error ("Emulator reply is too short: %s", buf);
- }
- registers[r++] = (fromhex (p[i+0])) * 16 + fromhex (p[i+1]);
- i += 2;
- }
- }
- p += i;
-
- while (*p++ != '\n') {;}
-
- /* fetch SSP-, SR- and PC-registers */
-
- /* first - check STATUS-word and decide which stackpointer to use */
-
- send_with_reply ("SR", SR_buf, sizeof (SR_buf));
- p = SR_buf;
- p += 5;
-
- if (m68020)
- {
- if (*p == '3') /* use masterstackpointer MSP */
- {
- send_with_reply ("MSP", buf, sizeof (buf));
- }
- else if (*p == '2') /* use interruptstackpointer ISP */
- {
- send_with_reply ("ISP", buf, sizeof (buf));
- }
- else /* use userstackpointer USP */
- {
- send_with_reply ("USP", buf, sizeof (buf));
- }
- p = buf;
- for (k = 0; k<4; k++)
- {
- if (p[k*2+1] == 0 || p[k*2+2] == 0)
- {
- error ("Emulator reply is too short: %s", buf);
- }
- registers[r++] = fromhex (buf[k*2+1]) * 16 + fromhex (buf[k*2+2]);
- }
-
- p = SR_buf;
- for (k = 0; k < 4; k++)
- {
- if (p[k*2+1] == 0 || p[k*2+2] == 0)
- {
- error ("Emulator reply is too short: %s", buf);
- }
- registers[r++] =
- fromhex (SR_buf[k*2+1]) * 16 + fromhex (SR_buf[k*2+2]);
- }
- send_with_reply ("PC", buf, sizeof (buf));
- p = buf;
- for (k = 0; k<4; k++)
- {
- if (p[k*2+1] == 0 || p[k*2+2] == 0)
- {
- error ("Emulator reply is too short: %s", buf);
- }
- registers[r++] = fromhex (buf[k*2+1]) * 16 + fromhex (buf[k*2+2]);
- }
- }
- else /* 68000-mode */
- {
- if (*p == '2') /* use supervisorstackpointer SSP */
- {
- send_with_reply ("SSP", buf, sizeof (buf));
- }
- else /* use userstackpointer USP */
- {
- send_with_reply ("USP", buf, sizeof (buf));
- }
-
- /* fetch STACKPOINTER */
-
- p = buf;
- for (k = 0; k < 4; k++)
- {
- if (p[k*2 + 1] == 0 || p[k*2 + 2] == 0)
- {
- error ("Emulator reply is too short: %s", buf);
- }
- registers[r++] = fromhex (buf[k*2+1]) * 16 + fromhex (buf[k*2+2]);
- }
-
- /* fetch STATUS */
-
- p = SR_buf;
- for (k = 0; k < 4; k++)
- {
- if (p[k*2+1] == 0 || p[k*2+2] == 0)
- {
- error ("Emulator reply is too short: %s", buf);
- }
- registers[r++] =
- fromhex (SR_buf[k*2+1]) * 16 + fromhex (SR_buf[k*2+2]);
- }
-
- /* fetch PC */
-
- send_with_reply ("PC", buf, sizeof (buf));
- p = buf;
- for (k = 0; k < 4; k++)
- {
- if (p[k*2+1] == 0 || p[k*2+2] == 0)
- {
- error ("Emulator reply is too short: %s", buf);
- }
- registers[r++] = fromhex (buf[k*2+1]) * 16 + fromhex (buf[k*2+2]);
- }
- }
-}
-
-/* Store register value, located in REGISTER, on the target processor.
- regno - the register-number of the register to store
- (-1 means store them all)
- FIXME: Return errno value. */
-
-static void
-es1800_store_register(regno)
- int regno;
-{
-
- static char regtab[18][4] =
- {
- "D0 ", "D1 ", "D2 ", "D3 ", "D4 ", "D5 ", "D6 ", "D7 ",
- "A0 ", "A1 ", "A2 ", "A3 ", "A4 ", "A5 ", "A6 ", "SSP",
- "SR ", "PC "
- };
-
- char buf[PBUFSIZ];
- char SR_buf[PBUFSIZ];
- char stack_pointer[4];
- char *p;
- int i;
- int j;
- int k;
- unsigned char *r;
-
- r = (unsigned char *) registers;
-
- if (regno == -1) /* write all registers */
- {
- j = 0;
- k = 18;
- }
- else /* write one register */
- {
- j = regno;
- k = regno+1;
- r += regno * 4;
- }
-
- if ((regno == -1) || (regno == 15))
- {
- /* fetch current status */
- send_with_reply ("SR", SR_buf, sizeof (SR_buf));
- p = SR_buf;
- p += 5;
- if (m68020)
- {
- if (*p == '3') /* use masterstackpointer MSP */
- {
- strcpy (stack_pointer,"MSP");
- }
- else
- {
- if (*p == '2') /* use interruptstackpointer ISP */
- {
- strcpy (stack_pointer,"ISP");
- }
- else
- {
- strcpy (stack_pointer,"USP"); /* use userstackpointer USP */
- }
- }
- }
- else /* 68000-mode */
- {
- if (*p == '2') /* use supervisorstackpointer SSP */
- {
- strcpy (stack_pointer,"SSP");
- }
- else
- {
- strcpy (stack_pointer,"USP");/* use userstackpointer USP */
- }
- }
- strcpy (regtab[15],stack_pointer);
- }
-
- for (i = j; i<k; i++)
- {
- buf[0] = regtab[i][0];
- buf[1] = regtab[i][1];
- buf[2] = regtab[i][2];
- buf[3] = '=';
- buf[4] = '$';
- buf[5] = tohex ((*r >> 4) & 0x0f);
- buf[6] = tohex (*r++ & 0x0f);
- buf[7] = tohex ((*r >> 4) & 0x0f);
- buf[8] = tohex (*r++ & 0x0f);
- buf[9] = tohex ((*r >> 4) & 0x0f);
- buf[10] = tohex (*r++ & 0x0f);
- buf[11] = tohex ((*r >> 4) & 0x0f);
- buf[12] = tohex (*r++ & 0x0f);
- buf[13] = 0;
-
- send_with_reply (buf, buf, sizeof (buf)); /* FIXME, reply not used? */
- }
-}
-
-
-/* Prepare to store registers. */
-
-static void
-es1800_prepare_to_store ()
-{
- /* Do nothing, since we can store individual regs */
-}
-
-/* Convert hex digit A to a number. */
-
-static int
-fromhex (a)
- int a;
-{
- if (a >= '0' && a <= '9')
- {
- return a - '0';
- }
- else if (a >= 'a' && a <= 'f')
- {
- return a - 'a' + 10;
- }
- else if (a >= 'A' && a <= 'F')
- {
- return a - 'A' + 10;
- }
- else
- {
- error ("Reply contains invalid hex digit");
- }
- return (-1);
-}
-
-
-/* Convert number NIB to a hex digit. */
-
-static int
-tohex (nib)
- int nib;
-{
- if (nib < 10)
- {
- return ('0' + nib);
- }
- else
- {
- return ('A' + nib - 10);
- }
-}
-
-/* Read or write LEN bytes from inferior memory at MEMADDR, transferring
- to or from debugger address MYADDR. Write to inferior if WRITE is
- nonzero. Returns length of data written or read; 0 for error.
-
- memaddr - the target's address
- myaddr - gdb's address
- len - number of bytes
- write - write if != 0 otherwise read */
-
-static int
-es1800_xfer_inferior_memory (memaddr, myaddr, len, write, tops)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
- int write;
- struct target_ops *tops; /* Unused */
-{
- int origlen = len;
- int xfersize;
-
- while (len > 0)
- {
- xfersize = len > MAXBUFBYTES ? MAXBUFBYTES : len;
- if (write)
- {
- es1800_write_bytes (memaddr, myaddr, xfersize);
- }
- else
- {
- es1800_read_bytes (memaddr, myaddr, xfersize);
- }
- memaddr += xfersize;
- myaddr += xfersize;
- len -= xfersize;
- }
- return (origlen); /* no error possible */
-}
-
-
-/* Write memory data directly to the emulator.
- This does not inform the data cache; the data cache uses this.
- MEMADDR is the address in the remote memory space.
- MYADDR is the address of the buffer in our space.
- LEN is the number of bytes.
-
- memaddr - the target's address
- myaddr - gdb's address
- len - number of bytes */
-
-static void
-es1800_write_bytes (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
-{
- char buf[PBUFSIZ];
- int i;
- char *p;
-
- p = myaddr;
- for (i = 0; i < len; i++)
- {
- sprintf (buf, "@.B$%x=$%x", memaddr+i, (*p++) & 0xff);
- send_with_reply (buf, buf, sizeof (buf)); /* FIXME send_command? */
- }
-}
-
-
-/* Read memory data directly from the emulator.
- This does not use the data cache; the data cache uses this.
-
- memaddr - the target's address
- myaddr - gdb's address
- len - number of bytes */
-
-static void
-es1800_read_bytes (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
-{
- static int DB_tab[16] = {8,11,14,17,20,23,26,29,34,37,40,43,46,49,52,55};
- char buf[PBUFSIZ];
- int i;
- int low_addr;
- char *p;
- char *b;
-
- if (len > PBUFSIZ / 2 - 1)
- {
- abort ();
- }
-
- if (len == 1) /* The emulator does not like expressions like: */
- {
- len = 2; /* DB.B $20018 TO $20018 */
- }
-
- /* Reply describes registers byte by byte, each byte encoded as two hex
- characters. */
-
- sprintf (buf, "DB.B $%x TO $%x", memaddr, memaddr+len-1);
- send_with_reply (buf, buf, sizeof (buf));
- b = buf;
- low_addr = memaddr&0x0f;
- for (i = low_addr; i < low_addr + len; i++)
- {
- if ((!(i % 16)) && i)
- { /* if (i = 16,32,48) */
- while (*p++!='\n') {;}
- b = p;
- }
- p = b + DB_tab[i%16] + (m68020 ? 2 : 0);
- if (p[0] == 32 || p[1] == 32)
- {
- error ("Emulator reply is too short: %s", buf);
- }
- myaddr[i-low_addr] = fromhex (p[0]) * 16 + fromhex (p[1]);
- }
-}
-
-/* Information about the current target */
-
-static void
-es1800_files_info (tops)
- struct target_ops *tops; /* Unused */
-{
- printf ("ES1800 Attached to %s at %d baud in %s mode\n", savename, 19200,
- MODE);
-}
-
-
-/* We read the contents of the target location and stash it,
- then overwrite it with a breakpoint instruction.
-
- addr - is the target location in the target machine.
- contents_cache - is a pointer to memory allocated for saving the target contents.
- It is guaranteed by the caller to be long enough to save sizeof
- BREAKPOINT bytes.
-
- FIXME: This size is target_arch dependent and should be available in
- the target_arch transfer vector, if we ever have one... */
-
-static int
-es1800_insert_breakpoint (addr, contents_cache)
- CORE_ADDR addr;
- char *contents_cache;
-{
- int val;
-
- val = target_read_memory (addr, contents_cache, sizeof (es1800_break_insn));
-
- if (val == 0)
- {
- val = target_write_memory (addr, es1800_break_insn,
- sizeof (es1800_break_insn));
- }
-
- return (val);
-}
-
-
-/* Write back the stashed instruction
-
- addr - is the target location in the target machine.
- contents_cache - is a pointer to memory allocated for saving the target contents.
- It is guaranteed by the caller to be long enough to save sizeof
- BREAKPOINT bytes. */
-
-static int
-es1800_remove_breakpoint (addr, contents_cache)
- CORE_ADDR addr;
- char *contents_cache;
-{
-
- return (target_write_memory (addr, contents_cache,
- sizeof (es1800_break_insn)));
-}
-
-/* create_break_insn ()
- Primitive datastructures containing the es1800 breakpoint instruction */
-
-static void
-es1800_create_break_insn (ins, vec)
- char *ins;
- int vec;
-{
- if (vec == 15)
- {
- ins[0] = 0x4e;
- ins[1] = 0x4f;
- }
-}
-
-
-/* verify_break ()
- Seach for breakpoint routine in emulator memory.
- returns non-zero on failure
- vec - trap vector used for breakpoints */
-
-static int
-verify_break (vec)
- int vec;
-{
- CORE_ADDR memaddress;
- char buf[8];
- char *instr = "NqNqNqNs"; /* breakpoint routine */
- int status;
-
- get_break_addr (vec, &memaddress);
-
- if (memaddress)
- {
- status = target_read_memory (memaddress, buf, 8);
- if (status != 0)
- {
- memory_error (status, memaddress);
- }
- return (STRCMP (instr, buf));
- }
- return (-1);
-}
-
-
-/* get_break_addr ()
- find address of breakpint routine
- vec - trap vector used for breakpoints
- addrp - store the address here */
-
-static void
-get_break_addr (vec, addrp)
- int vec;
- CORE_ADDR *addrp;
-{
- CORE_ADDR memaddress = 0;
- int status;
- int k;
- char buf[PBUFSIZ];
- char base_addr[4];
- char *p;
-
- if (m68020)
- {
- send_with_reply ("VBR ", buf, sizeof (buf));
- p = buf;
- for (k = 0; k < 4; k++)
- {
- if ((p[k*2 + 1] == 0) || (p[k*2 + 2] == 0))
- {
- error ("Emulator reply is too short: %s", buf);
- }
- base_addr[k] = (fromhex (p[k*2 + 1]) * 16) + fromhex (p[k*2 + 2]);
- }
- /* base addr of exception vector table */
- memaddress = *((CORE_ADDR *) base_addr);
- }
-
- memaddress += (vec + 32) * 4; /* address of trap vector */
- status = target_read_memory (memaddress, (char *) addrp, 4);
- if (status != 0)
- {
- memory_error (status, memaddress);
- }
-}
-
-
-/* Kill an inferior process */
-
-static void
-es1800_kill ()
-{
- if (inferior_pid != 0)
- {
- inferior_pid = 0;
- es1800_mourn_inferior ();
- }
-}
-
-
-/* Load a file to the ES1800 emulator.
- Converts the file from a.out format into Extended Tekhex format
- before the file is loaded.
- Also loads the trap routine, and sets the ES1800 breakpoint on it
- filename - the a.out to be loaded
- from_tty - says whether to be verbose or not
- FIXME Uses emulator overlay memory for trap routine */
-
-static void
-es1800_load (filename, from_tty)
- char *filename;
- int from_tty;
-{
-
- FILE *instream;
- char loadname[15];
- char buf[160];
- struct cleanup *old_chain;
- int es1800_load_format = 5;
-
- if (es1800_desc < 0)
- {
- printf ("No emulator attached, type emulator-command first\n");
- return;
- }
-
- filename = tilde_expand (filename);
- make_cleanup (free, filename);
-
- switch (es1800_load_format)
- {
- case 2: /* Extended Tekhex */
- if (from_tty)
- {
- printf ("Converting \"%s\" to Extended Tekhex Format\n", filename);
- }
- sprintf (buf, "tekhex %s", filename);
- system (buf);
- sprintf (loadname, "out.hex");
- break;
-
- case 5: /* Motorola S-rec */
- if (from_tty)
- {
- printf ("Converting \"%s\" to Motorola S-record format\n",
- filename);
- }
- /* in the future the source code in copy (part of binutils-1.93) will
- be included in this file */
- sprintf (buf,
- "copy -s \"a.out-sunos-big\" -d \"srec\" %s /tmp/out.hex",
- filename);
- system (buf);
- sprintf (loadname, "/tmp/out.hex");
- break;
-
- default:
- error ("Downloading format not defined\n");
- }
-
- mark_breakpoints_out ();
- inferior_pid = 0;
- if (from_tty)
- {
- printf ("Downloading \"%s\" to the ES 1800\n",filename);
- }
- if ((instream = fopen (loadname, "r")) == NULL)
- {
- perror_with_name ("fopen:");
- }
-
- old_chain = make_cleanup (fclose, instream);
- immediate_quit++;
-
- es1800_reset (0);
-
- download (instream, from_tty, es1800_load_format);
-
- /* if breakpoint routine is not present anymore we have to check
- whether to download a new breakpoint routine or not */
-
- if ((verify_break (es1800_break_vec) != 0)
- && query ("No breakpoint routine in ES 1800 emulator!\nDownload a breakpoint routine to the emulator? "))
- {
- char buf[128];
- printf ("Using break vector 0x%x\n", es1800_break_vec);
- sprintf (buf, "0x%x ", es1800_break_vec);
- printf ("Give the start address of the breakpoint routine: ");
- fgets (buf + strlen (buf), sizeof (buf) - strlen (buf), stdin);
- es1800_init_break (buf, 0);
- }
-
- do_cleanups (old_chain);
- expect_prompt ();
- readchar (); /* FIXME I am getting a ^G = 7 after the prompt */
- printf ("\n");
-
- if (fclose (instream) == EOF)
- {
- ;
- }
-
- if (es1800_load_format != 2)
- {
- sprintf (buf, "/usr/bin/rm %s", loadname);
- system (buf);
- }
-
- symbol_file_command (filename, from_tty); /* reading symbol table */
- immediate_quit--;
-}
-
-#if 0
-
-#define NUMCPYBYTES 20
-
-static void
-bfd_copy (from_bfd, to_bfd)
- bfd *from_bfd;
- bfd *to_bfd;
-{
- asection *p, *new;
- int i;
- char buf[NUMCPYBYTES];
-
- for (p = from_bfd->sections; p != NULL; p = p->next)
- {
- printf (" Copying section %s. Size = %x.\n", p->name, p->_cooked_size);
- printf (" vma = %x, offset = %x, output_sec = %x\n",
- p->vma, p->output_offset, p->output_section);
- new = bfd_make_section (to_bfd, p->name);
- if (p->_cooked_size &&
- !bfd_set_section_size (to_bfd, new, p->_cooked_size))
- {
- error ("Wrong BFD size!\n");
- }
- if (!bfd_set_section_flags (to_bfd, new, p->flags))
- {
- error ("bfd_set_section_flags");
- }
- new->vma = p->vma;
-
- for (i = 0; (i + NUMCPYBYTES) < p->_cooked_size ; i += NUMCPYBYTES)
- {
- if (!bfd_get_section_contents (from_bfd, p, (PTR) buf, (file_ptr) i,
- (bfd_size_type) NUMCPYBYTES))
- {
- error ("bfd_get_section_contents\n");
- }
- if (!bfd_set_section_contents (to_bfd, new, (PTR) buf, (file_ptr) i,
- (bfd_size_type) NUMCPYBYTES))
- {
- error ("bfd_set_section_contents\n");
- }
- }
- bfd_get_section_contents (from_bfd, p, (PTR) buf, (file_ptr) i,
- (bfd_size_type) (p->_cooked_size - i));
- bfd_set_section_contents (to_bfd, new, (PTR) buf,(file_ptr) i,
- (bfd_size_type) (p->_cooked_size - i));
- }
-}
-
-#endif
-
-/* Start an process on the es1800 and set inferior_pid to the new
- process' pid.
- execfile - the file to run
- args - arguments passed to the program
- env - the environment vector to pass */
-
-static void
-es1800_create_inferior (execfile, args, env)
- char *execfile;
- char *args;
- char **env;
-{
- int entry_pt;
- int pid;
-#if 0
- struct expression *expr;
- register struct cleanup *old_chain = 0;
- register value val;
-#endif
-
- if (args && *args)
- {
- error ("Can't pass arguments to remote ES1800 process");
- }
-
-#if 0
- if (query ("Use 'start' as entry point? "))
- {
- expr = parse_c_expression ("start");
- old_chain = make_cleanup (free_current_contents, &expr);
- val = evaluate_expression (expr);
- entry_pt = (val->location).address;
- }
- else
- {
- printf ("Enter the program's entry point (in hexadecimal): ");
- scanf ("%x", &entry_pt);
- }
-#endif
-
- if (execfile == 0 || exec_bfd == 0)
- {
- error ("No exec file specified");
- }
-
- entry_pt = (int) bfd_get_start_address (exec_bfd);
-
- pid = 42;
-
- /* Now that we have a child process, make it our target. */
-
- push_target (&es1800_child_ops);
-
- /* The "process" (board) is already stopped awaiting our commands, and
- the program is already downloaded. We just set its PC and go. */
-
- inferior_pid = pid; /* Needed for wait_for_inferior below */
-
- clear_proceed_status ();
-
- /* Tell wait_for_inferior that we've started a new process. */
-
- init_wait_for_inferior ();
-
- /* Set up the "saved terminal modes" of the inferior
- based on what modes we are starting it with. */
-
- target_terminal_init ();
-
- /* Install inferior's terminal modes. */
-
- target_terminal_inferior ();
-
- /* remote_start (args); */
- /* trap_expected = 0; */
- /* insert_step_breakpoint (); FIXME, do we need this? */
-
- proceed ((CORE_ADDR) entry_pt, -1, 0); /* Let 'er rip... */
-
-}
-
-
-/* The process has died, clean up. */
-
-static void
-es1800_mourn_inferior ()
-{
- remove_breakpoints ();
- unpush_target (&es1800_child_ops);
- generic_mourn_inferior (); /* Do all the proper things now */
-}
-
-/* ES1800-protocol specific routines */
-
-/* Keep discarding input from the remote system, until STRING is found.
- Let the user break out immediately.
- string - the string to expect
- nowait - break out if string not the emulator's first respond otherwise
- read until string is found (== 0) */
-
-static void
-expect (string, nowait)
- char *string;
- int nowait;
-{
- char c;
- char *p = string;
-
- immediate_quit++;
- while (1)
- {
- c = readchar ();
- if (isalpha (c))
- {
- c = toupper (c);
- }
- if (c == toupper (*p))
- {
- p++;
- if (*p == '\0')
- {
- immediate_quit--;
- return;
- }
- }
- else if (!nowait)
- {
- p = string;
- }
- else
- {
- printf ("\'%s\' expected\n" , string);
- printf ("char %d is %d", p - string, c);
- error ("\n" );
- }
- }
-}
-
-/* Keep discarding input until we see the prompt. */
-
-static void
-expect_prompt ()
-{
- expect (">", 0);
-}
-
-
-/* Read one character */
-
-#ifdef DEBUG_STDIN
-
-/* read from stdin */
-
-static int
-readchar ()
-{
- char buf[1];
-
- buf[0] = '\0';
- printf ("readchar, give one character\n");
- read (0, buf, 1);
-
-#if defined (LOG_FILE)
- putc (buf[0] & 0x7f, log_file);
-#endif
-
- return (buf[0] & 0x7f);
-}
-
-#else /* !DEBUG_STDIN */
-
-/* Read a character from the remote system, doing all the fancy
- timeout stuff. */
-
-static int
-readchar ()
-{
- char buf[1];
-
- buf[0] = '\0';
-
-#ifdef HAVE_TERMIO
-
- /* termio does the timeout for us. */
- read (es1800_desc, buf, 1);
-
-#else
-
- alarm (timeout);
- while (read (es1800_desc, buf, 1) != 1)
- {
- if (errno == EINTR)
- {
- error ("Timeout reading from remote system.");
- }
- else if (errno != EWOULDBLOCK)
- {
- perror_with_name ("remote read");
- }
- }
- alarm (0);
-#endif
-
-#if defined (LOG_FILE)
- putc (buf[0] & 0x7f, log_file);
- fflush (log_file);
-#endif
-
- return (buf[0] & 0x7f);
-}
-
-#endif /* DEBUG_STDIN */
-
-
-/* Send a command to the emulator and save the reply.
- Report an error if we get an error reply.
- string - the es1800 command
- buf - containing the emulator reply on return
- len - size of buf */
-
-static void
-send_with_reply (string, buf, len)
- char *string, *buf;
- int len;
-{
- send (string);
- write (es1800_desc, "\r", 1);
-
-#ifndef DEBUG_STDIN
- expect (string, 1);
- expect ("\r\n", 0);
-#endif
-
- getmessage (buf, len);
-}
-
-
-/* Send the command in STR to the emulator adding \r. check
- the echo for consistency.
- string - the es1800 command */
-
-static void
-send_command (string)
- char *string;
-{
- send (string);
- write (es1800_desc, "\r", 1);
-
-#ifndef DEBUG_STDIN
- expect (string, 0);
- expect_prompt ();
-#endif
-
-}
-
-/* Send a string
- string - the es1800 command */
-
-static void
-send (string)
- char *string;
-{
- if (kiodebug)
- {
- fprintf (stderr, "Sending: %s\n", string);
- }
- write (es1800_desc, string, strlen (string));
-}
-
-
-/* Read a message from the emulator and store it in BUF.
- buf - containing the emulator reply on return
- len - size of buf */
-
-static void
-getmessage (buf, len)
- char *buf;
- int len;
-{
- char *bp;
- int c;
- int prompt_found = 0;
- extern kiodebug;
-
-#if defined (LOG_FILE)
- /* This is a convenient place to do this. The idea is to do it often
- enough that we never lose much data if we terminate abnormally. */
- fflush (log_file);
-#endif
-
- bp = buf;
- c = readchar ();
- do
- {
- if (c)
- {
- if (len-- < 2) /* char and terminaling NULL */
- {
- error ("input buffer overrun\n");
- }
- *bp++ = c;
- }
- c = readchar ();
- if ((c == '>') && (*(bp - 1) == ' '))
- {
- prompt_found = 1;
- }
- }
- while (!prompt_found);
- *bp = 0;
-
- if (kiodebug)
- {
- fprintf (stderr,"message received :%s\n", buf);
- }
-}
-
-static void
-download (instream, from_tty, format)
-FILE *instream;
- int from_tty;
- int format;
-{
- char c;
- char buf[160];
- int i = 0;
-
- send_command ("SET #2,$1A"); /* reset char = ^Z */
- send_command ("SET #3,$11,$13"); /* XON XOFF */
- if (format == 2)
- {
- send_command ("SET #26,#2");
- }
- else
- {
- send_command ("SET #26,#5"); /* Format=Extended Tekhex */
- }
- send_command ("DFB = $10");
- send_command ("PUR");
- send_command ("CES");
- send ("DNL\r");
- expect ("DNL", 1);
- if (from_tty)
- {
- printf (" 0 records loaded...\r");
- }
- while (fgets (buf, 160, instream))
- {
- send (buf);
- if (from_tty)
- {
- printf ("%5d\b\b\b\b\b",++i);
- fflush (stdout);
- }
- if ((c = readchar ()) != 006)
- {
- error ("expected ACK");
- }
- }
- if (from_tty)
- {
- printf ("- All");
- }
-}
-
-/* Additional commands */
-
-/* Talk directly to the emulator
- FIXME, uses busy wait, and is SUNOS (or at least BSD) specific */
-
-/*ARGSUSED*/
-static void
-es1800_transparent (args, from_tty)
- char *args;
- int from_tty;
-{
- int console;
- struct sgttyb modebl;
- int fcflag;
- int cc;
- struct sgttyb console_mode_save;
- int console_fc_save;
- int es1800_fc_save;
- int inputcnt = 80;
- char inputbuf[80];
- int consolecnt = 0;
- char consolebuf[80];
- int es1800_cnt = 0;
- char es1800_buf[80];
- int i;
-
- dont_repeat ();
- if (es1800_desc < 0)
- {
- printf ("No emulator attached, type emulator-command first\n");
- return;
- }
-
- printf ("\n");
- printf ("You are now communicating directly with the ES 1800 emulator.\n");
- printf ("To leave this mode (transparent mode), press ^E.\n");
- printf ("\n");
- printf (" >");
- fflush (stdout);
-
- if ((console = open ("/dev/tty", O_RDWR)) == -1)
- {
- perror_with_name ("/dev/tty:");
- }
-
- if ((fcflag = fcntl (console, F_GETFL, 0)) == -1)
- {
- perror_with_name ("fcntl console");
- }
-
- console_fc_save = fcflag;
- fcflag = fcflag | FNDELAY;
-
- if (fcntl (console, F_SETFL, fcflag) == -1)
- {
- perror_with_name ("fcntl console");
- }
-
- if (ioctl (console, TIOCGETP, &modebl))
- {
- perror_with_name ("ioctl console");
- }
-
- console_mode_save = modebl;
- modebl.sg_flags = RAW;
-
- if (ioctl (console, TIOCSETP, &modebl))
- {
- perror_with_name ("ioctl console");
- }
-
- if ((fcflag = fcntl (es1800_desc, F_GETFL, 0)) == -1)
- {
- perror_with_name ("fcntl serial");
- }
-
- es1800_fc_save = fcflag;
- fcflag = fcflag | FNDELAY;
-
- if (fcntl (es1800_desc, F_SETFL, fcflag) == -1)
- {
- perror_with_name ("fcntl serial");
- }
-
- while (1)
- {
- cc = read (console, inputbuf, inputcnt);
- if (cc != -1)
- {
- if ((*inputbuf & 0x7f) == 0x05)
- {
- break;
- }
- for (i = 0; i < cc; )
- {
- es1800_buf[es1800_cnt++] = inputbuf[i++];
- }
- if ((cc = write (es1800_desc, es1800_buf, es1800_cnt)) == -1)
- {
- perror_with_name ("FEL! read:");
- }
- es1800_cnt -= cc;
- if (es1800_cnt && cc)
- {
- for (i = 0; i < es1800_cnt; i++)
- {
- es1800_buf[i] = es1800_buf[cc+i];
- }
- }
- }
- else if (errno != EWOULDBLOCK)
- {
- perror_with_name ("FEL! read:");
- }
-
- cc = read (es1800_desc,inputbuf,inputcnt);
- if (cc != -1)
- {
- for (i = 0; i < cc; )
- {
- consolebuf[consolecnt++] = inputbuf[i++];
- }
- if ((cc = write (console,consolebuf,consolecnt)) == -1)
- {
- perror_with_name ("FEL! write:");
- }
- consolecnt -= cc;
- if (consolecnt && cc)
- {
- for (i = 0; i < consolecnt; i++)
- {
- consolebuf[i] = consolebuf[cc+i];
- }
- }
- }
- else if (errno != EWOULDBLOCK)
- {
- perror_with_name ("FEL! read:");
- }
- }
-
- console_fc_save = console_fc_save & !FNDELAY;
- if (fcntl (console, F_SETFL, console_fc_save) == -1)
- {
- perror_with_name ("FEL! fcntl");
- }
-
- if (ioctl (console, TIOCSETP, &console_mode_save))
- {
- perror_with_name ("FEL! ioctl");
- }
-
- close (console);
-
- if (fcntl (es1800_desc, F_SETFL, es1800_fc_save) == -1)
- {
- perror_with_name ("FEL! fcntl");
- }
-
- printf ("\n");
-
-}
-
-static void
-es1800_init_break (args, from_tty)
- char *args;
- int from_tty;
-{
- CORE_ADDR memaddress = 0;
- char buf[PBUFSIZ];
- char base_addr[4];
- char *space_index;
- char *p;
- int k;
-
- if (args == NULL)
- {
- error_no_arg ("a trap vector");
- }
-
- if (!(space_index = strchr (args, ' ')))
- {
- error ("Two arguments needed (trap vector and address of break routine).\n");
- }
-
- *space_index = '\0';
-
- es1800_break_vec = strtol (args, (char **) NULL, 0);
- es1800_break_address = parse_and_eval_address (space_index + 1);
-
- es1800_create_break_insn (es1800_break_insn, es1800_break_vec);
-
- if (m68020)
- {
- send_with_reply ("VBR ", buf, sizeof (buf));
- p = buf;
- for (k = 0; k < 4; k++)
- {
- if ((p[k*2 + 1] == 0) || (p[k*2 + 2] == 0))
- {
- error ("Emulator reply is too short: %s", buf);
- }
- base_addr[k] = (fromhex (p[k*2 + 1]) * 16) + fromhex (p[k*2 + 2]);
- }
- /* base addr of exception vector table */
- memaddress = *((CORE_ADDR *) base_addr);
- }
-
- memaddress += (es1800_break_vec + 32) * 4; /* address of trap vector */
-
- sprintf (buf, "@.L%lx=$%lx", memaddress, es1800_break_address);
- send_command (buf); /* set the address of the break routine in the */
- /* trap vector */
-
- sprintf (buf, "@.L%lx=$4E714E71", es1800_break_address); /* NOP; NOP */
- send_command (buf);
- sprintf (buf, "@.L%lx=$4E714E73", es1800_break_address + 4); /* NOP; RTE */
- send_command (buf);
-
- sprintf (buf, "AC2=$%lx", es1800_break_address + 4);
- /* breakpoint at es1800-break_address */
- send_command (buf);
- send_command ("WHEN AC2 THEN BRK"); /* ie in exception routine */
-
- if (from_tty)
- {
- printf ("Breakpoint (trap $%x) routine at address: %lx\n",
- es1800_break_vec, es1800_break_address);
- }
-}
-
-static void
-es1800_child_open (arg, from_tty)
- char *arg;
- int from_tty;
-{
- error ("Use the \"run\" command to start a child process.");
-}
-
-static void
-es1800_child_detach (args, from_tty)
- char *args;
- int from_tty;
-{
- if (args)
- {
- error ("Argument given to \"detach\" when remotely debugging.");
- }
-
- pop_target ();
- if (from_tty)
- {
- printf ("Ending debugging the process %d.\n", inferior_pid);
- }
-}
-
-
-/* Define the target subroutine names */
-
-static struct target_ops es1800_ops =
-{
- "es1800", /* to_shortname */
- /* to_longname */
- "Remote serial target in ES1800-emulator protocol",
- /* to_doc */
- "Remote debugging on the es1800 emulator via a serial line.\n\
-Specify the serial device it is connected to (e.g. /dev/ttya).",
- es1800_open, /* to_open */
- es1800_close, /* to_close */
- es1800_attach, /* to_attach */
- es1800_detach, /* to_detach */
- es1800_resume, /* to_resume */
- NULL, /* to_wait */
- NULL, /* to_fetch_registers */
- NULL, /* to_store_registers */
- es1800_prepare_to_store, /* to_prepare_to_store */
- es1800_xfer_inferior_memory, /* to_xfer_memory */
- es1800_files_info, /* to_files_info */
- es1800_insert_breakpoint, /* to_insert_breakpoint */
- es1800_remove_breakpoint, /* to_remove_breakpoint */
- NULL, /* to_terminal_init */
- NULL, /* to_terminal_inferior */
- NULL, /* to_terminal_ours_for_output */
- NULL, /* to_terminal_ours */
- NULL, /* to_terminal_info */
- NULL, /* to_kill */
- es1800_load, /* to_load */
- NULL, /* to_lookup_symbol */
- es1800_create_inferior, /* to_create_inferior */
- NULL, /* to_mourn_inferior */
- 0, /* to_can_run */
- 0, /* notice_signals */
- core_stratum, /* to_stratum */
- 0, /* to_next */
- 0, /* to_has_all_memory */
- 1, /* to_has_memory */
- 0, /* to_has_stack */
- 0, /* to_has_registers */
- 0, /* to_has_execution */
- NULL, /* to_sections */
- NULL, /* to_sections_end */
- OPS_MAGIC /* to_magic (always last) */
-};
-
-/* Define the target subroutine names */
-
-static struct target_ops es1800_child_ops =
-{
- "es1800_process", /* to_shortname */
- /* to_longname */
- "Remote serial target in ES1800-emulator protocol",
- /* to_doc */
- "Remote debugging on the es1800 emulator via a serial line.\n\
-Specify the serial device it is connected to (e.g. /dev/ttya).",
- es1800_child_open, /* to_open */
- NULL, /* to_close */
- es1800_attach, /* to_attach */
- es1800_child_detach, /* to_detach */
- es1800_resume, /* to_resume */
- es1800_wait, /* to_wait */
- es1800_fetch_register, /* to_fetch_registers */
- es1800_store_register, /* to_store_registers */
- es1800_prepare_to_store, /* to_prepare_to_store */
- es1800_xfer_inferior_memory, /* to_xfer_memory */
- es1800_files_info, /* to_files_info */
- es1800_insert_breakpoint, /* to_insert_breakpoint */
- es1800_remove_breakpoint, /* to_remove_breakpoint */
- NULL, /* to_terminal_init */
- NULL, /* to_terminal_inferior */
- NULL, /* to_terminal_ours_for_output */
- NULL, /* to_terminal_ours */
- NULL, /* to_terminal_info */
- es1800_kill, /* to_kill */
- es1800_load, /* to_load */
- NULL, /* to_lookup_symbol */
- es1800_create_inferior, /* to_create_inferior */
- es1800_mourn_inferior, /* to_mourn_inferior */
- 0, /* to_can_run */
- 0, /* notice_signals */
- process_stratum, /* to_stratum */
- 0, /* to_next */
- 1, /* to_has_all_memory */
- 1, /* to_has_memory */
- 1, /* to_has_stack */
- 1, /* to_has_registers */
- 1, /* to_has_execution */
- NULL, /* to_sections */
- NULL, /* to_sections_end */
- OPS_MAGIC /* to_magic (always last) */
-};
-
-/* _initialize_es1800 () */
-
-void
-_initialize_es1800 ()
-{
- add_target (&es1800_ops);
- add_target (&es1800_child_ops);
- add_com ("transparent", class_support, es1800_transparent,
- "Start transparent communication with the ES 1800 emulator.");
- add_com ("init_break", class_support, es1800_init_break,
- "Download break routine and initialize break facility on ES 1800");
-}
-/* Remote debugging interface for Tandem ST2000 phone switch, for GDB.
- Copyright 1990, 1991, 1992 Free Software Foundation, Inc.
- Contributed by Cygnus Support. Written by Jim Kingdon for Cygnus.
-
-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 file was derived from remote-eb.c, which did a similar job, but for
- an AMD-29K running EBMON. That file was in turn derived from remote.c
- as mentioned in the following comment (left in for comic relief):
-
- "This is like remote.c but is for an esoteric situation--
- having an a29k board in a PC hooked up to a unix machine with
- a serial line, and running ctty com1 on the PC, through which
- the unix machine can run ebmon. Not to mention that the PC
- has PC/NFS, so it can access the same executables that gdb can,
- over the net in real time."
-
- In reality, this module talks to a debug monitor called 'STDEBUG', which
- runs in a phone switch. We communicate with STDEBUG via either a direct
- serial line, or a TCP (or possibly TELNET) stream to a terminal multiplexor,
- which in turn talks to the phone switch. */
-
-#include "defs.h"
-#include "gdbcore.h"
-#include "target.h"
-#include "wait.h"
-#include <varargs.h>
-#include <signal.h>
-#include <string.h>
-#include <sys/types.h>
-#include "serial.h"
-
-extern struct target_ops st2000_ops; /* Forward declaration */
-
-static void st2000_close();
-static void st2000_fetch_register();
-static void st2000_store_register();
-
-#define LOG_FILE "st2000.log"
-#if defined (LOG_FILE)
-FILE *log_file;
-#endif
-
-static int timeout = 24;
-
-/* Descriptor for I/O to remote machine. Initialize it to -1 so that
- st2000_open knows that we don't have a file open when the program
- starts. */
-
-static serial_t st2000_desc;
-
-/* Send data to stdebug. Works just like printf. */
-
-static void
-printf_stdebug(va_alist)
- va_dcl
-{
- va_list args;
- char *pattern;
- char buf[200];
-
- va_start(args);
-
- pattern = va_arg(args, char *);
-
- vsprintf(buf, pattern, args);
- if (SERIAL_WRITE(st2000_desc, buf, strlen(buf)))
- fprintf(stderr, "SERIAL_WRITE failed: %s\n", safe_strerror(errno));
-}
-
-/* Read a character from the remote system, doing all the fancy timeout
- stuff. */
-
-static int
-readchar(timeout)
- int timeout;
-{
- int c;
-
- c = SERIAL_READCHAR(st2000_desc, timeout);
-
-#ifdef LOG_FILE
- putc(c & 0x7f, log_file);
-#endif
-
- if (c >= 0)
- return c & 0x7f;
-
- if (c == SERIAL_TIMEOUT)
- {
- if (timeout == 0)
- return c; /* Polls shouldn't generate timeout errors */
-
- error("Timeout reading from remote system.");
- }
-
- perror_with_name("remote-st2000");
-}
-
-/* Scan input from the remote system, until STRING is found. If DISCARD is
- non-zero, then discard non-matching input, else print it out.
- Let the user break out immediately. */
-static void
-expect(string, discard)
- char *string;
- int discard;
-{
- char *p = string;
- int c;
-
- immediate_quit = 1;
- while (1)
- {
- c = readchar(timeout);
- if (c == *p++)
- {
- if (*p == '\0')
- {
- immediate_quit = 0;
- return;
- }
- }
- else
- {
- if (!discard)
- {
- fwrite(string, 1, (p - 1) - string, stdout);
- putchar((char)c);
- fflush(stdout);
- }
- p = string;
- }
- }
-}
-
-/* Keep discarding input until we see the STDEBUG prompt.
-
- The convention for dealing with the prompt is that you
- o give your command
- o *then* wait for the prompt.
-
- Thus the last thing that a procedure does with the serial line
- will be an expect_prompt(). Exception: st2000_resume does not
- wait for the prompt, because the terminal is being handed over
- to the inferior. However, the next thing which happens after that
- is a st2000_wait which does wait for the prompt.
- Note that this includes abnormal exit, e.g. error(). This is
- necessary to prevent getting into states from which we can't
- recover. */
-static void
-expect_prompt(discard)
- int discard;
-{
-#if defined (LOG_FILE)
- /* This is a convenient place to do this. The idea is to do it often
- enough that we never lose much data if we terminate abnormally. */
- fflush(log_file);
-#endif
- expect ("dbug> ", discard);
-}
-
-/* Get a hex digit from the remote system & return its value.
- If ignore_space is nonzero, ignore spaces (not newline, tab, etc). */
-static int
-get_hex_digit(ignore_space)
- int ignore_space;
-{
- int ch;
- while (1)
- {
- ch = readchar(timeout);
- if (ch >= '0' && ch <= '9')
- return ch - '0';
- else if (ch >= 'A' && ch <= 'F')
- return ch - 'A' + 10;
- else if (ch >= 'a' && ch <= 'f')
- return ch - 'a' + 10;
- else if (ch == ' ' && ignore_space)
- ;
- else
- {
- expect_prompt(1);
- error("Invalid hex digit from remote system.");
- }
- }
-}
-
-/* Get a byte from stdebug and put it in *BYT. Accept any number
- leading spaces. */
-static void
-get_hex_byte (byt)
- char *byt;
-{
- int val;
-
- val = get_hex_digit (1) << 4;
- val |= get_hex_digit (0);
- *byt = val;
-}
-
-/* Get N 32-bit words from remote, each preceded by a space,
- and put them in registers starting at REGNO. */
-static void
-get_hex_regs (n, regno)
- int n;
- int regno;
-{
- long val;
- int i;
-
- for (i = 0; i < n; i++)
- {
- int j;
-
- val = 0;
- for (j = 0; j < 8; j++)
- val = (val << 4) + get_hex_digit (j == 0);
- supply_register (regno++, (char *) &val);
- }
-}
-
-/* This is called not only when we first attach, but also when the
- user types "run" after having attached. */
-static void
-st2000_create_inferior (execfile, args, env)
- char *execfile;
- char *args;
- char **env;
-{
- int entry_pt;
-
- if (args && *args)
- error("Can't pass arguments to remote STDEBUG process");
-
- if (execfile == 0 || exec_bfd == 0)
- error("No exec file specified");
-
- entry_pt = (int) bfd_get_start_address (exec_bfd);
-
-#ifdef CREATE_INFERIOR_HOOK
- CREATE_INFERIOR_HOOK (0); /* No process-ID */
-#endif
-
-/* The "process" (board) is already stopped awaiting our commands, and
- the program is already downloaded. We just set its PC and go. */
-
- clear_proceed_status ();
-
- /* Tell wait_for_inferior that we've started a new process. */
- init_wait_for_inferior ();
-
- /* Set up the "saved terminal modes" of the inferior
- based on what modes we are starting it with. */
- target_terminal_init ();
-
- /* Install inferior's terminal modes. */
- target_terminal_inferior ();
-
- /* insert_step_breakpoint (); FIXME, do we need this? */
- proceed ((CORE_ADDR)entry_pt, -1, 0); /* Let 'er rip... */
-}
-
-/* Open a connection to a remote debugger.
- NAME is the filename used for communication. */
-
-static int baudrate = 9600;
-static char dev_name[100];
-
-static void
-st2000_open(args, from_tty)
- char *args;
- int from_tty;
-{
- int n;
- char junk[100];
-
- target_preopen(from_tty);
-
- n = sscanf(args, " %s %d %s", dev_name, &baudrate, junk);
-
- if (n != 2)
- error("Bad arguments. Usage: target st2000 <device> <speed>\n\
-or target st2000 <host> <port>\n");
-
- st2000_close(0);
-
- st2000_desc = SERIAL_OPEN(dev_name);
-
- if (!st2000_desc)
- perror_with_name(dev_name);
-
- SERIAL_SETBAUDRATE(st2000_desc, baudrate);
-
- SERIAL_RAW(st2000_desc);
-
- push_target(&st2000_ops);
-
-#if defined (LOG_FILE)
- log_file = fopen (LOG_FILE, "w");
- if (log_file == NULL)
- perror_with_name (LOG_FILE);
-#endif
-
- /* Hello? Are you there? */
- printf_stdebug("\003"); /* ^C wakes up dbug */
-
- expect_prompt(1);
-
- if (from_tty)
- printf("Remote %s connected to %s\n", target_shortname,
- dev_name);
-}
-
-/* Close out all files and local state before this target loses control. */
-
-static void
-st2000_close (quitting)
- int quitting;
-{
- SERIAL_CLOSE(st2000_desc);
-
-#if defined (LOG_FILE)
- if (log_file) {
- if (ferror(log_file))
- fprintf(stderr, "Error writing log file.\n");
- if (fclose(log_file) != 0)
- fprintf(stderr, "Error closing log file.\n");
- }
-#endif
-}
-
-/* Terminate the open connection to the remote debugger.
- Use this when you want to detach and do something else
- with your gdb. */
-static void
-st2000_detach (from_tty)
- int from_tty;
-{
- pop_target(); /* calls st2000_close to do the real work */
- if (from_tty)
- printf ("Ending remote %s debugging\n", target_shortname);
-}
-
-/* Tell the remote machine to resume. */
-
-static void
-st2000_resume (step, sig)
- int step, sig;
-{
- if (step)
- {
- printf_stdebug ("ST\r");
- /* Wait for the echo. */
- expect ("ST\r", 1);
- }
- else
- {
- printf_stdebug ("GO\r");
- /* Swallow the echo. */
- expect ("GO\r", 1);
- }
-}
-
-/* Wait until the remote machine stops, then return,
- storing status in STATUS just as `wait' would. */
-
-static int
-st2000_wait (status)
- WAITTYPE *status;
-{
- int old_timeout = timeout;
-
- WSETEXIT ((*status), 0);
-
- timeout = 0; /* Don't time out -- user program is running. */
-
- expect_prompt(0); /* Wait for prompt, outputting extraneous text */
-
- WSETSTOP ((*status), SIGTRAP);
-
- timeout = old_timeout;
-
- return 0;
-}
-
-/* Return the name of register number REGNO in the form input and output by
- STDEBUG. Currently, REGISTER_NAMES just happens to contain exactly what
- STDEBUG wants. Lets take advantage of that just as long as possible! */
-
-static char *
-get_reg_name (regno)
- int regno;
-{
- static char buf[50];
- const char *p;
- char *b;
-
- b = buf;
-
- for (p = reg_names[regno]; *p; p++)
- *b++ = toupper(*p);
- *b = '\000';
-
- return buf;
-}
-
-/* Read the remote registers into the block REGS. */
-
-static void
-st2000_fetch_registers ()
-{
- int regno;
-
- /* Yeah yeah, I know this is horribly inefficient. But it isn't done
- very often... I'll clean it up later. */
-
- for (regno = 0; regno <= PC_REGNUM; regno++)
- st2000_fetch_register(regno);
-}
-
-/* Fetch register REGNO, or all registers if REGNO is -1.
- Returns errno value. */
-static void
-st2000_fetch_register (regno)
- int regno;
-{
- if (regno == -1)
- st2000_fetch_registers ();
- else
- {
- char *name = get_reg_name (regno);
- printf_stdebug ("DR %s\r", name);
- expect (name, 1);
- expect (" : ", 1);
- get_hex_regs (1, regno);
- expect_prompt (1);
- }
- return;
-}
-
-/* Store the remote registers from the contents of the block REGS. */
-
-static void
-st2000_store_registers ()
-{
- int regno;
-
- for (regno = 0; regno <= PC_REGNUM; regno++)
- st2000_store_register(regno);
-
- registers_changed ();
-}
-
-/* Store register REGNO, or all if REGNO == 0.
- Return errno value. */
-static void
-st2000_store_register (regno)
- int regno;
-{
- if (regno == -1)
- st2000_store_registers ();
- else
- {
- printf_stdebug ("PR %s %x\r", get_reg_name (regno),
- read_register (regno));
-
- expect_prompt (1);
- }
-}
-
-/* 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
-st2000_prepare_to_store ()
-{
- /* Do nothing, since we can store individual regs */
-}
-
-static void
-st2000_files_info ()
-{
- printf ("\tAttached to %s at %d baud.\n",
- dev_name, baudrate);
-}
-
-/* Copy LEN bytes of data from debugger memory at MYADDR
- to inferior's memory at MEMADDR. Returns length moved. */
-static int
-st2000_write_inferior_memory (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- unsigned char *myaddr;
- int len;
-{
- int i;
-
- for (i = 0; i < len; i++)
- {
- printf_stdebug ("PM.B %x %x\r", memaddr + i, myaddr[i]);
- expect_prompt (1);
- }
- return len;
-}
-
-/* Read LEN bytes from inferior memory at MEMADDR. Put the result
- at debugger address MYADDR. Returns length moved. */
-static int
-st2000_read_inferior_memory(memaddr, myaddr, len)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
-{
- int i;
-
- /* Number of bytes read so far. */
- int count;
-
- /* Starting address of this pass. */
- unsigned long startaddr;
-
- /* Number of bytes to read in this pass. */
- int len_this_pass;
-
- /* Note that this code works correctly if startaddr is just less
- than UINT_MAX (well, really CORE_ADDR_MAX if there was such a
- thing). That is, something like
- st2000_read_bytes (CORE_ADDR_MAX - 4, foo, 4)
- works--it never adds len to memaddr and gets 0. */
- /* However, something like
- st2000_read_bytes (CORE_ADDR_MAX - 3, foo, 4)
- doesn't need to work. Detect it and give up if there's an attempt
- to do that. */
- if (((memaddr - 1) + len) < memaddr) {
- errno = EIO;
- return 0;
- }
-
- startaddr = memaddr;
- count = 0;
- while (count < len)
- {
- len_this_pass = 16;
- if ((startaddr % 16) != 0)
- len_this_pass -= startaddr % 16;
- if (len_this_pass > (len - count))
- len_this_pass = (len - count);
-
- printf_stdebug ("DI.L %x %x\r", startaddr, len_this_pass);
- expect (": ", 1);
-
- for (i = 0; i < len_this_pass; i++)
- get_hex_byte (&myaddr[count++]);
-
- expect_prompt (1);
-
- startaddr += len_this_pass;
- }
- return len;
-}
-
-/* FIXME-someday! Merge these two. */
-static int
-st2000_xfer_inferior_memory (memaddr, myaddr, len, write, target)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
- int write;
- struct target_ops *target; /* ignored */
-{
- if (write)
- return st2000_write_inferior_memory (memaddr, myaddr, len);
- else
- return st2000_read_inferior_memory (memaddr, myaddr, len);
-}
-
-static void
-st2000_kill (args, from_tty)
- char *args;
- int from_tty;
-{
- return; /* Ignore attempts to kill target system */
-}
-
-/* Clean up when a program exits.
-
- The program actually lives on in the remote processor's RAM, and may be
- run again without a download. Don't leave it full of breakpoint
- instructions. */
-
-static void
-st2000_mourn_inferior ()
-{
- remove_breakpoints ();
- unpush_target (&st2000_ops);
- generic_mourn_inferior (); /* Do all the proper things now */
-}
-
-#define MAX_STDEBUG_BREAKPOINTS 16
-
-extern int memory_breakpoint_size;
-static CORE_ADDR breakaddr[MAX_STDEBUG_BREAKPOINTS] = {0};
-
-static int
-st2000_insert_breakpoint (addr, shadow)
- CORE_ADDR addr;
- char *shadow;
-{
- int i;
-
- for (i = 0; i <= MAX_STDEBUG_BREAKPOINTS; i++)
- if (breakaddr[i] == 0)
- {
- breakaddr[i] = addr;
-
- st2000_read_inferior_memory(addr, shadow, memory_breakpoint_size);
- printf_stdebug("BR %x H\r", addr);
- expect_prompt(1);
- return 0;
- }
-
- fprintf(stderr, "Too many breakpoints (> 16) for STDBUG\n");
- return 1;
-}
-
-static int
-st2000_remove_breakpoint (addr, shadow)
- CORE_ADDR addr;
- char *shadow;
-{
- int i;
-
- for (i = 0; i < MAX_STDEBUG_BREAKPOINTS; i++)
- if (breakaddr[i] == addr)
- {
- breakaddr[i] = 0;
-
- printf_stdebug("CB %d\r", i);
- expect_prompt(1);
- return 0;
- }
-
- fprintf(stderr, "Can't find breakpoint associated with 0x%x\n", addr);
- return 1;
-}
-
-
-/* Put a command string, in args, out to STDBUG. Output from STDBUG is placed
- on the users terminal until the prompt is seen. */
-
-static void
-st2000_command (args, fromtty)
- char *args;
- int fromtty;
-{
- if (!st2000_desc)
- error("st2000 target not open.");
-
- if (!args)
- error("Missing command.");
-
- printf_stdebug("%s\r", args);
- expect_prompt(0);
-}
-
-/* Connect the user directly to STDBUG. This command acts just like the
- 'cu' or 'tip' command. Use <CR>~. or <CR>~^D to break out. */
-
-/*static struct ttystate ttystate;*/
-
-static void
-cleanup_tty()
-{
- printf("\r\n[Exiting connect mode]\r\n");
-/* SERIAL_RESTORE(0, &ttystate);*/
-}
-
-#if 0
-/* This all should now be in serial.c */
-
-static void
-connect_command (args, fromtty)
- char *args;
- int fromtty;
-{
- fd_set readfds;
- int numfds;
- int c;
- char cur_esc = 0;
-
- dont_repeat();
-
- if (st2000_desc < 0)
- error("st2000 target not open.");
-
- if (args)
- fprintf("This command takes no args. They have been ignored.\n");
-
- printf("[Entering connect mode. Use ~. or ~^D to escape]\n");
-
- serial_raw(0, &ttystate);
-
- make_cleanup(cleanup_tty, 0);
-
- FD_ZERO(&readfds);
-
- while (1)
- {
- do
- {
- FD_SET(0, &readfds);
- FD_SET(st2000_desc, &readfds);
- numfds = select(sizeof(readfds)*8, &readfds, 0, 0, 0);
- }
- while (numfds == 0);
-
- if (numfds < 0)
- perror_with_name("select");
-
- if (FD_ISSET(0, &readfds))
- { /* tty input, send to stdebug */
- c = getchar();
- if (c < 0)
- perror_with_name("connect");
-
- printf_stdebug("%c", c);
- switch (cur_esc)
- {
- case 0:
- if (c == '\r')
- cur_esc = c;
- break;
- case '\r':
- if (c == '~')
- cur_esc = c;
- else
- cur_esc = 0;
- break;
- case '~':
- if (c == '.' || c == '\004')
- return;
- else
- cur_esc = 0;
- }
- }
-
- if (FD_ISSET(st2000_desc, &readfds))
- {
- while (1)
- {
- c = readchar(0);
- if (c < 0)
- break;
- putchar(c);
- }
- fflush(stdout);
- }
- }
-}
-#endif /* 0 */
-
-/* Define the target subroutine names */
-
-struct target_ops st2000_ops = {
- "st2000",
- "Remote serial Tandem ST2000 target",
- "Use a remote computer running STDEBUG connected by a serial line,\n\
-or a network connection.\n\
-Arguments are the name of the device for the serial line,\n\
-the speed to connect at in bits per second.",
- st2000_open,
- st2000_close,
- 0,
- st2000_detach,
- st2000_resume,
- st2000_wait,
- st2000_fetch_register,
- st2000_store_register,
- st2000_prepare_to_store,
- st2000_xfer_inferior_memory,
- st2000_files_info,
- st2000_insert_breakpoint,
- st2000_remove_breakpoint, /* Breakpoints */
- 0,
- 0,
- 0,
- 0,
- 0, /* Terminal handling */
- st2000_kill,
- 0, /* load */
- 0, /* lookup_symbol */
- st2000_create_inferior,
- st2000_mourn_inferior,
- 0, /* can_run */
- 0, /* notice_signals */
- 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_st2000 ()
-{
- add_target (&st2000_ops);
- add_com ("st2000 <command>", class_obscure, st2000_command,
- "Send a command to the STDBUG monitor.");
- add_com ("connect", class_obscure, connect_command,
- "Connect the terminal directly up to the STDBUG command monitor.\n\
-Use <CR>~. or <CR>~^D to break out.");
-}
projects / binutils-gdb.git / commitdiff