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- /* Remote debugging interface for Hitachi E7000 ICE, for GDB
- Copyright 1993, 1994 Free Software Foundation, Inc.
- Contributed by Cygnus Support.
-
- Written by Steve Chamberlain for Cygnus Support.
-
- 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. */
-
-
- #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"
- #if 0
- #define HARD_BREAKPOINTS
- #define BC_BREAKPOINTS 0
- #endif
-
- /* The E7000 is an in-circuit emulator for the Hitachi H8/300-H and
- Hitachi-SH processor. It has serial port and a lan port.
-
- The monitor command set makes it difficult to load large ammounts of
- data over the lan without using ftp - so try not to issue load
- commands when communicating over ethernet; use the ftpload command.
-
- The monitor pauses for a second when dumping srecords to the serial
- line too, so we use a slower per byte mechanism but without the
- startup overhead. Even so, it's pretty slow... */
-
- int using_tcp; /* nonzero if using the tcp serial driver */
- int using_pc; /* nonzero if using the pc isa card */
-
- extern struct target_ops e7000_ops; /* Forward declaration */
- #define CTRLC 0x03
- #define ENQ 0x05
- #define ACK 0x06
- #define CTRLZ 0x1a
-
- char *ENQSTRING = "\005";
-
- /* Nonzero if some routine (as opposed to the user) wants echoing.
- FIXME: Do this reentrantly with an extra parameter. */
- static int echo;
-
- int ctrl_c;
- static void e7000_close ();
- static void e7000_fetch_register ();
- static void e7000_store_register ();
-
- static int timeout = 5;
-
- static void expect PARAMS ((char *));
- static void expect_full_prompt PARAMS (());
- static void expect_prompt PARAMS (());
- static serial_t e7000_desc;
-
-
- /* Send data to e7000debug. */
- static void
- puts_e7000debug (buf)
- char *buf;
- {
- if (!e7000_desc)
- {
- error ("Use \"target e7000 ...\" first.");
- }
-
- if (remote_debug)
- printf("Sending %s\n", buf);
-
- if (SERIAL_WRITE (e7000_desc, buf, strlen (buf)))
- fprintf (stderr, "SERIAL_WRITE failed: %s\n", safe_strerror (errno));
-
- /* And expect to see it echoed, unless using the pc interface */
- #if 0
- if (!using_pc)
- #endif
- expect (buf);
- }
-
- static void
- putchar_e7000 (x)
- {
- char b[1];
- b[0] = x;
- SERIAL_WRITE (e7000_desc, b, 1);
- }
-
- static void
- write_e7000 (s)
- char *s;
- {
- SERIAL_WRITE (e7000_desc, s, strlen (s));
- }
-
- static int
- normal (x)
- int x;
- {
- if (x == '\n') return '\r';
- return x;
- }
-
- /* Read a character from the remote system, doing all the fancy timeout
- stuff. */
-
- static int
- readchar (timeout)
- int timeout;
- {
- int c;
- do
- {
- c = SERIAL_READCHAR (e7000_desc, timeout);
- }
- while (c > 127);
- if (c == SERIAL_TIMEOUT)
- {
- if (timeout == 0)
- return -1;
- echo = 0;
- error ("Timeout reading from remote system.");
- }
- if (remote_debug)
- {
- putchar (c);
- fflush(stdout);
- }
-
- return normal(c);
- }
-
- char *
- tl (x)
- {
- static char b[8][10];
- static int p;
- p++;
- p &= 7;
- if (x >= ' ')
- {
- b[p][0] = x;
- b[p][1] = 0;
- }
- else
- {
- sprintf(b[p],"<%d>", x);
- }
- return b[p];
- }
-
- /* 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)
- char *string;
- {
- char *p = string;
- int c;
- int nl = 0;
- while (1)
- {
- c = readchar (timeout);
- notice_quit ();
- if (quit_flag == 1)
- {
- if (ctrl_c) {
- putchar_e7000(CTRLC);
- ctrl_c -- ;
- }
- else
- {
- quit();
- }
- }
-
- if (c == SERIAL_ERROR)
- {
- error ("Serial communication error");
- }
- if (echo || remote_debug)
- {
- if (c == '\r' || c == '\n') {
- if (!nl)
- putchar('\n');
- nl = 1;
- }
- else {
- nl = 0;
- putchar (c);
- }
- fflush (stdout);
- }
- if (normal(c) == normal(*p++))
- {
- if (*p == '\0')
- {
- return;
- }
- }
- else
- {
- p = string ;
-
- if (normal(c) == normal(string[0]))
- p++;
- }
- }
- }
-
- /* Keep discarding input until we see the e7000 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: e7000_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 e7000_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 ()
- {
- expect (":");
- }
- static void
- expect_full_prompt ()
- {
- expect ("\r:");
- }
-
- static int
- get_hex_digit (ch)
- {
- 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;
- return -1;
- }
-
-
-
- static int
- get_hex (start)
- int *start;
- {
- int value = get_hex_digit (*start);
- int try;
-
- *start = readchar (timeout);
- while ((try = get_hex_digit (*start)) >= 0)
- {
- value <<= 4;
- value += try;
- *start = readchar (timeout);
- }
- return value;
- }
-
- /* 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
- e7000_create_inferior (execfile, args, env)
- char *execfile;
- char *args;
- char **env;
- {
- int entry_pt;
-
- if (args && *args)
- error ("Can't pass arguments to remote E7000DEBUG 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 char *machine = "";
- static char *user = "";
- static char *passwd = "";
- static char *dir = "";
-
- /* Grab the next token and buy some space for it */
- static char *
- next (ptr)
- char **ptr;
- {
- char *p = *ptr;
- char *s;
- char *r;
- int l = 0;
- while (*p && *p == ' ')
- {
- p++;
- }
- s = p;
- while (*p && (*p != ' ' && *p != '\t'))
- {
- l++;
- p++;
- }
- r = xmalloc (l + 1);
- memcpy (r, s, l);
- r[l] = 0;
- *ptr = p;
- return r;
- }
-
- static
- e7000_login (args, from_tty)
- char *args;
- int from_tty;
- {
- if (args)
- {
- machine = next (&args);
- user = next (&args);
- passwd = next (&args);
- dir = next (&args);
- if (from_tty)
- {
- printf ("Set info to %s %s %s %s\n", machine, user, passwd, dir);
- }
- }
- else
- {
- error ("Syntax is ftplogin <machine> <user> <passwd> <directory>");
- }
- }
-
- /* Start an ftp transfer from the E7000 to a host */
-
- static
- e7000_ftp (args, from_tty)
- char *args;
- int from_tty;
- {
- /* FIXME: arbitrary limit on machine names and such. */
- char buf[200];
-
- int oldtimeout = timeout;
- timeout = 10;
-
- sprintf (buf, "ftp %s\r", machine);
- puts_e7000debug (buf);
- expect (" Username : ");
- sprintf (buf, "%s\r", user);
- puts_e7000debug (buf);
- expect (" Password : ");
- write_e7000 (passwd);
- write_e7000 ("\r");
- expect ("success\r");
- expect ("FTP>");
- sprintf (buf, "cd %s\r", dir);
- puts_e7000debug (buf);
- expect ("FTP>");
- sprintf (buf, "ll 0;s:%s\r", args);
- puts_e7000debug (buf);
- expect ("FTP>");
- puts_e7000debug ("bye\r");
- expect (":");
- timeout = oldtimeout;
- }
-
- static void
- e7000_open (args, from_tty)
- char *args;
- int from_tty;
- {
- int n;
- int loop;
- char junk[100];
- int sync;
- target_preopen (from_tty);
-
- n = 0;
- if (args && strcasecmp (args,"pc") == 0)
- {
- strcpy (dev_name, args);
- }
- else
- {
- if (args)
- {
- n = sscanf (args, " %s %d %s", dev_name, &baudrate, junk);
- }
-
- if (n != 1 && n != 2)
- {
- error ("Bad arguments. Usage:\ttarget e7000 <device> <speed>\n\
- or \t\ttarget e7000 <host>[:<port>]\n\
- or \t\ttarget e7000 pc\n");
- }
-
- #ifndef __GO32__
- if (n == 1 && strchr (dev_name, ':') == 0)
- {
- /* Default to normal telnet port */
- strcat (dev_name, ":23");
- }
- #endif
-
- }
-
- push_target (&e7000_ops);
-
- e7000_desc = SERIAL_OPEN (dev_name);
-
- if (!e7000_desc)
- perror_with_name (dev_name);
-
- using_tcp = strcmp (e7000_desc->ops->name, "tcp") == 0;
- using_pc = strcmp (e7000_desc->ops->name, "pc") == 0;
-
- SERIAL_SETBAUDRATE (e7000_desc, baudrate);
- SERIAL_RAW (e7000_desc);
-
- /* Hello? Are you there? */
- sync = 0;
- loop = 0;
- putchar_e7000 (CTRLC);
- while (!sync)
- {
- int c;
- int k = 0;
- if (from_tty)
- printf_unfiltered ("[waiting for e7000...]\n");
- write_e7000 ("\r");
- c = SERIAL_READCHAR (e7000_desc, 1);
- while (c != SERIAL_TIMEOUT)
- {
- /* Dont echo cr's */
- if (from_tty && c != '\r')
- {
- putchar (c);
- fflush (stdout);
- }
- if (c == ':')
- {
- sync = 1;
- }
-
- if (loop++ == 20)
- {
- putchar_e7000 (CTRLC);
- loop = 0;
- }
-
- QUIT ;
-
-
- if (quit_flag)
- {
- putchar_e7000 (CTRLC);
- quit_flag = 0;
- }
- c = SERIAL_READCHAR (e7000_desc, 1);
- }
- }
- puts_e7000debug ("\r");
-
- expect_prompt ();
-
- if (from_tty)
- printf_filtered ("Remote %s connected to %s\n", target_shortname,
- dev_name);
-
- #ifdef GDB_TARGET_IS_H8300
- h8300hmode = 1;
- #endif
- }
-
- /* Close out all files and local state before this target loses control. */
-
- static void
- e7000_close (quitting)
- int quitting;
- {
- if (e7000_desc)
- {
- SERIAL_CLOSE (e7000_desc);
- e7000_desc = 0;
- }
- }
-
- /* Terminate the open connection to the remote debugger.
- Use this when you want to detach and do something else
- with your gdb. */
- static void
- e7000_detach (from_tty)
- int from_tty;
- {
- pop_target (); /* calls e7000_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
- e7000_resume (pid, step, sig)
- int pid, step, sig;
- {
- if (step)
- {
- puts_e7000debug ("S\r");
- }
- else
- {
- puts_e7000debug ("G\r");
- }
- }
-
- /* Read the remote registers into the block REGS.
-
- For the H8/300 a register dump looks like:
-
-
- PC=00021A CCR=80:I*******
- ER0 - ER3 0000000A 0000002E 0000002E 00000000
- ER4 - ER7 00000000 00000000 00000000 00FFEFF6
- 000218 MOV.B R1L,R2L
- STEP NORMAL END or
- BREAK POINT
- */
-
- #ifdef GDB_TARGET_IS_H8300
- char *want = "PC=%p CCR=%c\n\
- ER0 - ER3 %0 %1 %2 %3\n\
- ER4 - ER7 %4 %5 %6 %7\n";
-
- char *want_nopc = "%p CCR=%c\n\
- ER0 - ER3 %0 %1 %2 %3\n\
- ER4 - ER7 %4 %5 %6 %7";
-
-
- #endif
- #ifdef GDB_TARGET_IS_SH
- char *want = "PC=%16 SR=%22\n\
- PR=%17 GBR=%18 VBR=%19\n\
- MACH=%20 MACL=%21\n\
- R0-7 %0 %1 %2 %3 %4 %5 %6 %7\n\
- R8-15 %8 %9 %10 %11 %12 %13 %14 %15\n";
-
- char *want_nopc = "%16 SR=%22\n\
- PR=%17 GBR=%18 VBR=%19\n\
- MACH=%20 MACL=%21\n\
- R0-7 %0 %1 %2 %3 %4 %5 %6 %7\n\
- R8-15 %8 %9 %10 %11 %12 %13 %14 %15";
-
- #endif
-
- static
- int
- gch ()
- {
- int c = readchar (timeout);
- if (remote_debug)
- {
- if (c >= ' ')
- printf ("%c", c);
- else if (c == '\n')
- printf ("\n", c);
-
- }
- return c;
- }
-
-
- static
- unsigned int
- gbyte ()
- {
- int high = get_hex_digit (gch ());
- int low = get_hex_digit (gch ());
- return (high << 4) + low;
- }
-
- void
- fetch_regs_from_dump (nextchar, want)
- int (*nextchar)();
- char *want;
- {
- int regno;
- char buf[MAX_REGISTER_RAW_SIZE];
-
- int thischar = nextchar();
-
- while (*want)
- {
- switch (*want)
- {
- case '\n':
- /* Skip to end of line and then eat all new line type stuff */
- while (thischar != '\n' && thischar != '\r')
- {
- thischar = nextchar();
- }
-
- while (thischar == '\n' || thischar == '\r')
- {
- thischar = nextchar();
- }
- want++;
- break;
-
- case ' ':
- while (thischar == ' ' || thischar == '\t' || thischar == '\r' || thischar == '\n')
- thischar = nextchar();
- want++;
- break;
-
- default:
- if (*want == thischar)
- {
- want++;
- if (*want)
- thischar = nextchar();
-
- }
- else if (thischar == ' ' || thischar == '\n' || thischar == '\r')
- {
- thischar = nextchar();
- }
- else {
- error("out of sync in fetch registers wanted <%s>, got <%c 0x%x>", want, thischar, thischar);
- }
-
- break;
- case '%':
- /* Got a register command */
- want++;
- switch (*want)
- {
- #ifdef PC_REGNUM
- case 'p':
- regno = PC_REGNUM;
- want++;
- break;
- #endif
- #ifdef CCR_REGNUM
- case 'c':
- regno = CCR_REGNUM;
- want++;
- break;
- #endif
- #ifdef SP_REGNUM
- case 's':
- regno = SP_REGNUM;
- want++;
- break;
- #endif
- #ifdef FP_REGNUM
- case 'f':
- regno = FP_REGNUM;
- want++;
- break;
- #endif
-
-
- default:
- if (isdigit(want[0]))
- {
- if (isdigit(want[1]))
- {
- regno = (want[0] - '0') * 10 + want[1] - '0';
- want+=2;
- }
- else
- {
- regno = want[0] - '0';
- want++;
- }
- }
-
- else
- abort();
- }
- store_signed_integer (buf,
- REGISTER_RAW_SIZE(regno),
- (LONGEST)get_hex(&thischar, nextchar));
- supply_register (regno, buf);
- break;
- }
- }
- }
-
- static void
- e7000_fetch_registers ()
- {
- int regno;
-
- puts_e7000debug ("R\r");
- fetch_regs_from_dump (gch, want);
-
- /* And supply the extra ones the simulator uses */
- for (regno = NUM_REALREGS; regno < NUM_REGS; regno++)
- {
- int buf = 0;
- supply_register (regno, (char *) (&buf));
- }
- }
-
- /* Fetch register REGNO, or all registers if REGNO is -1.
- Returns errno value. */
-
- static
- void
- e7000_fetch_register (regno)
- int regno;
- {
- e7000_fetch_registers ();
- }
-
- /* Store the remote registers from the contents of the block REGS. */
-
- static void
- e7000_store_registers ()
- {
- int regno;
-
- for (regno = 0; regno < NUM_REALREGS; regno++)
- e7000_store_register (regno);
-
- registers_changed ();
- }
-
- /* Store register REGNO, or all if REGNO == 0.
- Return errno value. */
- static void
- e7000_store_register (regno)
- int regno;
- {
- char buf[200];
-
- if (regno == -1)
- {
- e7000_store_registers ();
- return;
- }
- #ifdef GDB_TARGET_IS_H8300
- if (regno <= 7)
- {
- sprintf (buf, ".ER%d %x\r", regno, read_register (regno));
- puts_e7000debug (buf);
- }
- else if (regno == PC_REGNUM)
- {
- sprintf (buf, ".PC %x\r", read_register (regno));
- puts_e7000debug (buf);
- }
- else if (regno == CCR_REGNUM)
- {
- sprintf (buf, ".CCR %x\r", read_register (regno));
- puts_e7000debug (buf);
- }
- #endif
-
- #ifdef GDB_TARGET_IS_SH
- switch (regno)
- {
- default:
- sprintf (buf, ".R%d %x\r", regno, read_register (regno));
- puts_e7000debug (buf);
- break;
-
- case PC_REGNUM:
- sprintf (buf, ".PC %x\r", read_register (regno));
- puts_e7000debug (buf);
- break;
-
- case SR_REGNUM:
- sprintf (buf, ".SR %x\r", read_register (regno));
- puts_e7000debug (buf);
- break;
-
- case PR_REGNUM:
- sprintf (buf, ".PR %x\r", read_register (regno));
- puts_e7000debug (buf);
- break;
-
- case GBR_REGNUM:
- sprintf (buf, ".GBR %x\r", read_register (regno));
- puts_e7000debug (buf);
- break;
-
- case VBR_REGNUM:
- sprintf (buf, ".VBR %x\r", read_register (regno));
- puts_e7000debug (buf);
- break;
-
- case MACH_REGNUM:
- sprintf (buf, ".MACH %x\r", read_register (regno));
- puts_e7000debug (buf);
- break;
-
- case MACL_REGNUM:
- sprintf (buf, ".MACL %x\r", read_register (regno));
- puts_e7000debug (buf);
- break;
- }
-
- #endif
- expect_prompt ();
- }
-
- /* 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
- e7000_prepare_to_store ()
- {
- /* Do nothing, since we can store individual regs */
- }
-
- static void
- e7000_files_info ()
- {
- printf ("\tAttached to %s at %d baud.\n",
- dev_name, baudrate);
- }
-
- static
- int
- stickbyte (where, what)
- char *where;
- unsigned int what;
- {
- static CONST char digs[] = "0123456789ABCDEF";
- where[0] = digs[(what >> 4) & 0xf];
- where[1] = digs[(what & 0xf) & 0xf];
- return what;
- }
-
- /* Write a small ammount of memory */
- static int
- write_small (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- unsigned char *myaddr;
- int len;
- {
- int i;
- char buf[200];
-
- for (i = 0; i < len; i++)
- {
- if (((memaddr + i) & 3) == 0
- && (i + 3 < len))
- {
- /* Can be done with a long word */
- sprintf (buf, "m %x %x%02x%02x%02x;l\r",
- memaddr + i,
- myaddr[i],
- myaddr[i + 1],
- myaddr[i + 2],
- myaddr[i + 3]);
- puts_e7000debug (buf);
- i += 3;
- }
- else
- {
- sprintf (buf, "m %x %x\r", memaddr + i, myaddr[i]);
- puts_e7000debug (buf);
- }
- }
- expect_prompt ();
- return len;
- }
- /* Write a large ammount of memory, this only works with the serial mode enabled.
- Command is sent as
- il ;s:s\r ->
- <- il ;s:s\r
- <- ENQ
- ACK ->
- <- LO s\r
- Srecords...
- ^Z ->
- <- ENQ
- ACK ->
- <- :
- */
-
- static int
- write_large (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- unsigned char *myaddr;
- int len;
- {
- int i;
- int c;
- #define maxstride 128
- int stride;
-
- puts_e7000debug ("IL ;S:FK\r");
- expect (ENQSTRING);
- putchar_e7000 (ACK);
- expect ("LO FK\r");
- for (i = 0; i < len; i += stride)
- {
- char compose[maxstride * 2 + 50];
- int address = i + memaddr;
- int j;
- int check_sum;
- int where = 0;
- int alen;
- stride = len - i;
- if (stride > maxstride)
- stride = maxstride;
-
- compose[where++] = 'S';
- check_sum = 0;
- if (address >= 0xffffff)
- {
- alen = 4;
- }
- else if (address >= 0xffff)
- {
- alen = 3;
- }
- else
- alen = 2;
- compose[where++] = alen - 1 + '0'; /* insert type */
- check_sum += stickbyte (compose + where, alen + stride + 1); /* Insert length */
- where += 2;
- while (alen > 0)
- {
- alen--;
- check_sum += stickbyte (compose + where, address >> (8 * (alen)));
- where += 2;
- }
-
- for (j = 0; j < stride; j++)
- {
- check_sum += stickbyte (compose + where, myaddr[i + j]);
- where += 2;
- }
-
- stickbyte (compose + where, ~check_sum);
-
- where += 2;
- compose[where++] = '\r';
- compose[where++] = '\n';
- compose[where++] = 0;
- {
- char *z;
- for (z = compose; *z; z++) ;
- {
- SERIAL_WRITE (e7000_desc, compose, where);
- j = SERIAL_READCHAR (e7000_desc, 0);
- if (j == SERIAL_TIMEOUT)
- {
- /* This is ok - nothing there */
- }
- else if (j == ENQ)
- {
- /* Hmm, it's trying to tell us something */
- expect (":");
- error ("Error writing memory");
- }
- else
- {
- printf ("@%d}@", j);
- while ((j = SERIAL_READCHAR(e7000_desc,0)) > 0)
- {
- printf ("@{%d}@",j);
- }
- }
- }
- }
- }
- /* Send the trailer record */
- write_e7000 ("S70500000000FA\r");
- putchar_e7000 (CTRLZ);
- expect (ENQSTRING);
- putchar_e7000 (ACK);
- expect (":");
- return len;
- }
-
- /* Copy LEN bytes of data from debugger memory at MYADDR
- to inferior's memory at MEMADDR. Returns length moved.
-
- Can't use the Srecord load over ethernet, so dont use
- fast method then.
- */
- static int
- e7000_write_inferior_memory (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- unsigned char *myaddr;
- int len;
- {
- if (len < 16 || using_tcp || using_pc)
- {
- return write_small (memaddr, myaddr, len);
- }
- else
- {
- return write_large (memaddr, myaddr, len);
- }
- }
-
-
- /* Read LEN bytes from inferior memory at MEMADDR. Put the result
- at debugger address MYADDR. Returns length moved.
-
-
- Small transactions we send
- m <addr>;l
- and receive
- 00000000 12345678 ?
-
- */
-
- static int
- e7000_read_inferior_memory (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- unsigned char *myaddr;
- int len;
- {
- int count;
- int c;
- int i;
- char buf[200];
- /* Starting address of this pass. */
-
- /* printf("READ INF %x %x %d\n", memaddr, myaddr, len);*/
- if (((memaddr - 1) + len) < memaddr)
- {
- errno = EIO;
- return 0;
- }
-
- sprintf (buf, "m %x;l\r", memaddr);
- puts_e7000debug (buf);
-
- for (count = 0; count < len; count += 4)
- {
- /* Suck away the address */
- c = gch();
- while (c != ' ')
- c = gch();
- c = gch();
- if (c == '*')
- { /* Some kind of error */
- expect_prompt();
- return -1;
- }
- while (c != ' ')
- c = gch();
-
- /* Now read in the data */
- for (i = 0; i < 4; i++)
- {
- int b = gbyte();
- if (count + i < len) {
- myaddr[count + i] = b;
- }
- }
-
- /* Skip the trailing ? and send a . to end and a cr for more */
- gch();
- gch();
- if (count + 4 >= len)
- puts_e7000debug(".\r");
- else
- puts_e7000debug("\r");
-
- }
- expect_prompt();
- return len;
- }
-
-
- #if 0
- /*
- For large transfers we used to send
-
-
- d <addr> <endaddr>\r
-
- and receive
- <ADDR> < D A T A > < ASCII CODE >
- 000000 5F FD FD FF DF 7F DF FF 01 00 01 00 02 00 08 04 "_..............."
- 000010 FF D7 FF 7F D7 F1 7F FF 00 05 00 00 08 00 40 00 "..............@."
- 000020 7F FD FF F7 7F FF FF F7 00 00 00 00 00 00 00 00 "................"
-
- A cost in chars for each transaction of 80 + 5*n-bytes.
-
-
- Large transactions could be done with the srecord load code, but
- there is a pause for a second before dumping starts, which slows the
- average rate down!
- */
-
- static int
- e7000_read_inferior_memory (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- unsigned char *myaddr;
- int len;
- {
- int count;
- int c;
- char buf[200];
-
- /* Starting address of this pass. */
-
- if (((memaddr - 1) + len) < memaddr)
- {
- errno = EIO;
- return 0;
- }
-
- sprintf (buf, "d %x %x\r", memaddr, memaddr + len - 1);
- puts_e7000debug (buf);
-
- count = 0;
- c = gch ();
-
- /* First skip the command */
- while (c == '\n')
- c = gch ();
-
- while (c == ' ')
- c = gch ();
- if (c == '*')
- {
- expect ("\r");
- return -1;
- }
-
- /* Skip the title line */
- while (c != '\n')
- c = gch ();
- c = gch ();
- while (count < len)
- {
- /* Skip the address */
- while (c <= ' ')
- c = gch ();
-
- get_hex (&c);
-
- /* read in the bytes on the line */
- while (c != '"' && count < len)
- {
- if (c == ' ')
- c = gch ();
- else
- {
- myaddr[count++] = get_hex (&c);
- }
- }
-
- while (c != '\n')
- c = gch ();
- }
-
- while (c != ':')
- c = gch ();
-
- return len;
- }
-
- static int
- fast_but_for_the_pause_e7000_read_inferior_memory (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
- {
- int loop;
- int c;
- char buf[200];
-
- if (((memaddr - 1) + len) < memaddr)
- {
- errno = EIO;
- return 0;
- }
-
- sprintf (buf, "is %x@%x:s\r", memaddr, len);
- puts_e7000debug (buf);
- gch ();
- c = gch ();
- if (c != ENQ)
- {
- /* Got an error */
- error ("Memory read error");
- }
- putchar_e7000 (ACK);
- expect ("SV s");
- loop = 1;
- while (loop)
- {
- int type;
- int length;
- int addr;
- int i;
- c = gch ();
- switch (c)
- {
- case ENQ: /* ENQ, at the end */
- loop = 0;
- break;
- case 'S':
- /* Start of an Srecord */
- type = gch ();
- length = gbyte ();
- switch (type)
- {
- case '7': /* Termination record, ignore */
- case '0':
- case '8':
- case '9':
- /* Header record - ignore it */
- while (length--)
- {
- gbyte ();
- }
- break;
- case '1':
- case '2':
- case '3':
- {
- int alen;
- alen = type - '0' + 1;
- addr = 0;
- while (alen--)
- {
- addr = (addr << 8) + gbyte ();
- length--;
- }
-
- for (i = 0; i < length - 1; i++)
- {
- myaddr[i + addr - memaddr] = gbyte ();
- }
- gbyte (); /* Ignore checksum */
- }
- }
- }
- }
- putchar_e7000 (ACK);
- expect ("TOP ADDRESS =");
- expect ("END ADDRESS =");
- expect (":");
-
- return len;
- }
-
- #endif
-
- static int
- e7000_xfer_inferior_memory (memaddr, myaddr, len, write, target)
- CORE_ADDR memaddr;
- unsigned char *myaddr;
- int len;
- int write;
- struct target_ops *target; /* ignored */
- {
- if (write)
- {
- return e7000_write_inferior_memory( memaddr, myaddr, len);
- }
- else
- {
- return e7000_read_inferior_memory( memaddr, myaddr, len);
- }
- }
-
- static void
- e7000_kill (args, from_tty)
- char *args;
- int from_tty;
- {
-
- }
-
- /* 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
- e7000_mourn_inferior ()
- {
- remove_breakpoints ();
- unpush_target (&e7000_ops);
- generic_mourn_inferior (); /* Do all the proper things now */
- }
-
- #ifdef HARD_BREAKPOINTS
- #define MAX_E7000DEBUG_BREAKPOINTS (BC_BREAKPOINTS ? 5 : 200)
- #else
- #define MAX_E7000DEBUG_BREAKPOINTS 200
- #endif
-
- extern int memory_breakpoint_size;
- static CORE_ADDR breakaddr[MAX_E7000DEBUG_BREAKPOINTS] =
- {0};
-
- static int
- e7000_insert_breakpoint (addr, shadow)
- CORE_ADDR addr;
- unsigned char *shadow;
- {
- int i;
- char buf[200];
- static char nop[2] = NOP;
-
- for (i = 0; i <= MAX_E7000DEBUG_BREAKPOINTS; i++)
- if (breakaddr[i] == 0)
- {
- breakaddr[i] = addr;
- /* Save old contents, and insert a nop in the space */
- #ifdef HARD_BREAKPOINTS
- if (BC_BREAKPOINTS)
- {
- sprintf (buf, "BC%d A=%x\r", i+1, addr);
- puts_e7000debug (buf);
- }
- else
- {
- sprintf (buf, "B %x\r", addr);
- puts_e7000debug (buf);
- }
- #else
- e7000_read_inferior_memory (addr, shadow, 2);
- e7000_write_inferior_memory (addr, nop, 2);
-
- sprintf (buf, "B %x\r", addr);
- puts_e7000debug (buf);
- #endif
- expect_prompt ();
- return 0;
- }
-
- error("Too many breakpoints ( > %d) for the E7000\n", MAX_E7000DEBUG_BREAKPOINTS);
- return 1;
- }
-
- static int
- e7000_remove_breakpoint (addr, shadow)
- CORE_ADDR addr;
- unsigned char *shadow;
- {
- int i;
- char buf[200];
-
- for (i = 0; i < MAX_E7000DEBUG_BREAKPOINTS; i++)
- if (breakaddr[i] == addr)
- {
- breakaddr[i] = 0;
- #ifdef HARD_BREAKPOINTS
- if (BC_BREAKPOINTS)
- {
- sprintf (buf, "BC%d - \r", i+1);
- puts_e7000debug (buf);
- }
- else
- {
- sprintf (buf, "B - %x\r", addr);
- puts_e7000debug (buf);
- }
- expect_prompt ();
- #else
- sprintf (buf, "B - %x\r", addr);
- puts_e7000debug (buf);
- expect_prompt ();
-
- /* Replace the insn under the break */
- e7000_write_inferior_memory (addr, shadow, 2);
- #endif
-
- 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
- e7000_command (args, fromtty)
- char *args;
- int fromtty;
- {
- /* FIXME: arbitrary limit on length of args. */
- char buf[200];
-
- echo = 0;
- if (!e7000_desc)
- error ("e7000 target not open.");
- if (!args)
- {
- puts_e7000debug ("\r");
- }
- else
- {
- sprintf (buf, "%s\r", args);
- puts_e7000debug (buf);
- }
- echo++;
- ctrl_c = 2;
- expect_full_prompt ();
- echo--;
- ctrl_c = 0;
- printf_unfiltered ("\n");
-
- /* Who knows what the command did... */
- registers_changed();
- }
-
- static void
- e7000_load (args, fromtty)
- char *args;
- int fromtty;
- {
- gr_load_image (args, fromtty);
- }
-
- static void
- e7000_drain (args, fromtty)
- char *args;
- int fromtty;
-
- {
- int c;
- puts_e7000debug("end\r");
- putchar_e7000 (CTRLC);
- while ((c = SERIAL_READCHAR (e7000_desc, 1) != SERIAL_TIMEOUT))
- {
- if(quit_flag)
- {
- putchar_e7000(CTRLC);
- quit_flag = 0;
- }
- if (c > ' ' && c < 127)
- printf ("%c", c & 0xff);
- else
- printf ("<%x>", c & 0xff);
- }
- }
-
- #define NITEMS 4
- static int
- why_stop ()
- {
- static char *strings[NITEMS] =
- {
- "STEP NORMAL",
- "BREAK POINT",
- "BREAK KEY",
- "BREAK CONDI",
- };
- char *p[NITEMS];
- int c;
- p[0] = strings[0];
- p[1] = strings[1];
- p[2] = strings[2];
- p[3] = strings[3];
-
- c = gch();
- while (1)
- {
- int i;
- for (i = 0; i < NITEMS; i++)
- {
- if (c == *(p[i]))
- {
- p[i]++;
- if (*(p[i]) == 0)
- {
- /* found one of the choices */
- return i;
- }
- }
- else {
- p[i] = strings[i];
- }
- }
-
- c = gch();
- }
- }
- /* Suck characters, if a string match, then return the strings index
- otherwise echo them */
- int
- expect_n ( strings)
- char **strings;
- {
- char *(ptr[10]);
- int n;
- int c;
- char saveaway[100];
- char *buffer = saveaway;
- /* Count number of expect strings */
-
- for (n =0; strings[n]; n++)
- {
- ptr[n] = strings[n];
- }
-
- while (1) {
- int i;
- int gotone = 0;
-
- c = SERIAL_READCHAR (e7000_desc, 1);
- if (c == SERIAL_TIMEOUT) {
- printf_unfiltered ("[waiting for e7000...]\n");
- }
- #ifdef __GO32__
- if (kbhit())
- {
- int k = getkey();
- if (k == 1)
- quit_flag = 1;
- }
- #endif
-
- if (quit_flag)
- {
- putchar_e7000 (CTRLC); /* interrupt the running program */
- quit_flag = 0;
- }
-
- for (i = 0; i < n; i++)
- {
- if (c == ptr[i][0])
- {
- ptr[i]++;
- if (ptr[i][0] == 0)
- {
- /* Gone all the way */
- return i;
- }
- gotone = 1;
- }
- else
- {
- ptr[i] = strings[i];
- }
- }
-
-
- if (gotone)
- {
- /* Save it up incase we find that there was no match */
- *buffer ++ = c;
- }
- else
- {
- if (buffer != saveaway)
- {
- *buffer++ = 0;
- printf(buffer);
- buffer = saveaway;
- }
- if (c != SERIAL_TIMEOUT) {
- putchar (c);
- fflush(stdout);
- }
- }
- }
- }
-
- /* We subtract two from the pc here rather than use DECR_PC_AFTER_BREAK
- since the e7000 doesn't always add two to the pc, and the simulators never do. */
-
- static void
- sub2_from_pc()
- {
- char buf[4];
- char buf2[200];
- store_signed_integer (buf,
- REGISTER_RAW_SIZE(PC_REGNUM),
- read_register (PC_REGNUM) -2);
- supply_register (PC_REGNUM, buf);
- sprintf (buf2, ".PC %x\r", read_register (PC_REGNUM));
- puts_e7000debug (buf2);
- }
- #define WAS_SLEEP 0
- #define WAS_INT 1
- #define WAS_RUNNING 2
- #define WAS_OTHER 3
- static char *estrings[] = { "** SLEEP", "BREAK !", "** PC", "PC", 0};
-
- /* Wait until the remote machine stops, then return,
- storing status in STATUS just as `wait' would. */
-
- static int
- e7000_wait (pid, status)
- int pid;
- struct target_waitstatus *status;
- {
- int c;
- int reset_pc;
- int regno;
- int running_count = 0;
- int had_sleep = 0;
- int loop = 1;
- char *reg;
- int time = 0;
- /* Then echo chars until PC= string seen */
- gch (); /* Drop cr */
- gch (); /* and space */
- while (loop)
- {
- switch (expect_n(estrings))
- {
- case WAS_OTHER:
- /* how did this happen ? */
- loop =0;
- break;
- case WAS_SLEEP:
- had_sleep = 1;
- putchar_e7000 (CTRLC);
- loop = 0;
- break;
- case WAS_INT:
- loop = 0;
- break;
- case WAS_RUNNING:
- running_count++;
- if (running_count == 20)
- {
- printf_unfiltered ("[running...]\n");
- running_count = 0;
- }
- break;
- }
- }
- /* Skip till the PC=*/
- expect("=");
- fetch_regs_from_dump (gch, want_nopc);
-
- /* And supply the extra ones the simulator uses */
- for (regno = NUM_REALREGS; regno < NUM_REGS; regno++)
- {
- int buf = 0;
- supply_register (regno, (char *) &buf);
- }
-
- reset_pc = why_stop ();
- expect_full_prompt ();
-
- status->kind = TARGET_WAITKIND_STOPPED;
- status->value.sig = TARGET_SIGNAL_TRAP;
-
- switch (reset_pc)
- {
- case 4:
- case 1: /* Breakpoint */
- status->value.sig = TARGET_SIGNAL_TRAP;
- break;
- case 0:
- /* Single step */
- status->value.sig = TARGET_SIGNAL_TRAP;
- break;
- case 2:
- /* Interrupt */
- if (had_sleep)
- {
- status->value.sig = TARGET_SIGNAL_TRAP;
- sub2_from_pc();
- }
- else
- {
- status->value.sig = TARGET_SIGNAL_INT;
- }
- break;
- }
- return 0;
- }
-
- /* Define the target subroutine names */
-
- struct target_ops e7000_ops =
- {
- "e7000",
- "Remote Hitachi e7000 target",
- "Use a remote Hitachi e7000 ICE 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.\n\
- eg\n\
- target e7000 /dev/ttya 9600\n\
- target e7000 foobar",
- e7000_open,
- e7000_close,
- 0,
- e7000_detach,
- e7000_resume,
- e7000_wait,
- e7000_fetch_register,
- e7000_store_register,
- e7000_prepare_to_store,
- e7000_xfer_inferior_memory,
- e7000_files_info,
- #ifdef HARD_BREAKPOINTS
- e7000_insert_breakpoint,
- e7000_remove_breakpoint, /* Breakpoints */
- #else
- memory_insert_breakpoint,
- memory_remove_breakpoint,
- #endif
- 0,
- 0,
- 0,
- 0,
- 0, /* Terminal handling */
- e7000_kill,
- e7000_load, /* load */
- 0, /* lookup_symbol */
- e7000_create_inferior,
- e7000_mourn_inferior,
- 0, /* can_run */
- 0, /* notice_signals */
- 0, /* to_stop */
- 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_e7000 ()
- {
- add_target (&e7000_ops);
- add_com ("e7000 <command>", class_obscure, e7000_command,
- "Send a command to the e7000 monitor.");
-
- add_com ("ftplogin <machine> <name> <passwd> <dir>", class_obscure, e7000_login,
- "Login to machine and change to directory.");
-
- add_com ("ftpload <file>", class_obscure, e7000_ftp,
- "Fetch and load a file from previously described place.");
-
- add_com ("drain", class_obscure, e7000_drain,
- "Drain pending e7000 text buffers.");
- }
-