1690 lines
32 KiB
C
1690 lines
32 KiB
C
/* Remote debugging interface for Hitachi E7000 ICE, for GDB
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Copyright 1993 Free Software Foundation, Inc.
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Contributed by Cygnus Support.
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Written by Steve Chamberlain for Cygnus Support.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "defs.h"
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#include "gdbcore.h"
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#include "target.h"
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#include "wait.h"
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#include <varargs.h>
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#include <signal.h>
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#include <string.h>
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#include <sys/types.h>
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#include "serial.h"
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/* The E7000 is an in-circuit emulator for the Hitachi H8/300-H and
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Hitachi-SH processor. It has serial port and a lan port.
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The monitor command set makes it difficult to load large ammounts of
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data over the lan without using ftp - so try not to issue load
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commands when communicating over ethernet; use the ftpload command.
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The monitor pauses for a second when dumping srecords to the serial
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line too, so we use a slower per byte mechanism but without the
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startup overhead. Even so, it's pretty slow... */
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int using_tcp; /* nonzero if using the tcp serial driver */
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extern struct target_ops e7000_ops; /* Forward declaration */
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#define CTRLC 0x03
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#define ENQ 0x05
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#define ACK 0x06
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#define CTRLZ 0x1a
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char *ENQSTRING = "\005";
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int echo;
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int ctrl_c;
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static void e7000_close ();
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static void e7000_fetch_register ();
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static void e7000_store_register ();
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static int timeout = 5;
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static void expect PARAMS ((char *));
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static void expect_full_prompt PARAMS (());
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static void expect_prompt PARAMS (());
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static serial_t e7000_desc;
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/* Send data to e7000debug. Works just like printf. */
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#if 0
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static void
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printf_e7000debug (va_alist)
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va_dcl
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{
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va_list args;
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char *pattern;
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char buf[200];
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va_start (args);
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pattern = va_arg (args, char *);
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vsprintf (buf, pattern, args);
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#else
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static void
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printf_e7000debug(a,b,c,d,e)
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{
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char buf[200];
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sprintf(buf, a,b,c,d,e);
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#endif
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if (SERIAL_WRITE (e7000_desc, buf, strlen (buf)))
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fprintf (stderr, "SERIAL_WRITE failed: %s\n", safe_strerror (errno));
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/* And expect to see it echoed */
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expect (buf);
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}
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static void
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putchar_e7000 (x)
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{
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char b[1];
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b[0] = x;
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SERIAL_WRITE (e7000_desc, b, 1);
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}
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static void
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write_e7000 (s)
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char *s;
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{
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SERIAL_WRITE (e7000_desc, s, strlen (s));
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}
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/* Read a character from the remote system, doing all the fancy timeout
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stuff. */
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static int
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readchar (timeout)
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int timeout;
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{
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int c;
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do
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{
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c = SERIAL_READCHAR (e7000_desc, timeout);
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}
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while (c > 127);
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if (c == SERIAL_TIMEOUT)
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{
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if (timeout == 0)
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return c; /* Polls shouldn't generate timeout errors */
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error ("Timeout reading from remote system.");
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}
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return c;
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}
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/* Scan input from the remote system, until STRING is found. If DISCARD is
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non-zero, then discard non-matching input, else print it out.
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Let the user break out immediately. */
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static void
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expect (string)
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char *string;
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{
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char *p = string;
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int c;
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while (1)
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{
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c = readchar (timeout);
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notice_quit ();
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if (quit_flag == 1)
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{
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if (ctrl_c) {
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putchar_e7000(CTRLC);
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ctrl_c -- ;
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}
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else
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{
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quit();
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}
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}
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if (c == SERIAL_ERROR)
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{
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error ("Serial communication error");
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}
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if (echo)
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{
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if (c != '\r')
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putchar (c);
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fflush (stdout);
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}
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if (c == *p++)
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{
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if (*p == '\0')
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{
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return;
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}
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}
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else
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{
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p = string;
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}
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}
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}
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/* Keep discarding input until we see the e7000 prompt.
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The convention for dealing with the prompt is that you
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o give your command
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o *then* wait for the prompt.
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Thus the last thing that a procedure does with the serial line
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will be an expect_prompt(). Exception: e7000_resume does not
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wait for the prompt, because the terminal is being handed over
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to the inferior. However, the next thing which happens after that
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is a e7000_wait which does wait for the prompt.
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Note that this includes abnormal exit, e.g. error(). This is
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necessary to prevent getting into states from which we can't
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recover. */
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static void
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expect_prompt ()
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{
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expect (":");
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}
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static void
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expect_full_prompt ()
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{
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expect ("\n:");
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}
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static int
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get_hex_digit (ch)
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{
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if (ch >= '0' && ch <= '9')
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return ch - '0';
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else if (ch >= 'A' && ch <= 'F')
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return ch - 'A' + 10;
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else if (ch >= 'a' && ch <= 'f')
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return ch - 'a' + 10;
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return -1;
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}
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static int
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get_hex (start)
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int *start;
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{
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int value = get_hex_digit (*start);
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int try;
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*start = readchar (timeout);
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while ((try = get_hex_digit (*start)) >= 0)
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{
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value <<= 4;
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value += try;
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*start = readchar (timeout);
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}
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return value;
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}
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/* Get N 32-bit words from remote, each preceded by a space,
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and put them in registers starting at REGNO. */
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static void
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get_hex_regs (n, regno)
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int n;
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int regno;
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{
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long val;
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int i;
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for (i = 0; i < n; i++)
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{
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int j;
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val = 0;
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for (j = 0; j < 8; j++)
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val = (val << 4) + get_hex_digit (j == 0);
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supply_register (regno++, (char *) &val);
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}
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}
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/* This is called not only when we first attach, but also when the
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user types "run" after having attached. */
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static void
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e7000_create_inferior (execfile, args, env)
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char *execfile;
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char *args;
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char **env;
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{
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int entry_pt;
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if (args && *args)
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error ("Can't pass arguments to remote E7000DEBUG process");
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if (execfile == 0 || exec_bfd == 0)
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error ("No exec file specified");
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entry_pt = (int) bfd_get_start_address (exec_bfd);
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#ifdef CREATE_INFERIOR_HOOK
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CREATE_INFERIOR_HOOK (0); /* No process-ID */
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#endif
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/* The "process" (board) is already stopped awaiting our commands, and
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the program is already downloaded. We just set its PC and go. */
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clear_proceed_status ();
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/* Tell wait_for_inferior that we've started a new process. */
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init_wait_for_inferior ();
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/* Set up the "saved terminal modes" of the inferior
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based on what modes we are starting it with. */
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target_terminal_init ();
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/* Install inferior's terminal modes. */
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target_terminal_inferior ();
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/* insert_step_breakpoint (); FIXME, do we need this? */
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proceed ((CORE_ADDR) entry_pt, -1, 0); /* Let 'er rip... */
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}
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/* Open a connection to a remote debugger.
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NAME is the filename used for communication. */
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static int baudrate = 9600;
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static char dev_name[100];
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static char *machine = "";
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static char *user = "";
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static char *passwd = "";
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static char *dir = "";
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/* Grab the next token and buy some space for it */
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static char *
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next (ptr)
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char **ptr;
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{
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char *p = *ptr;
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char *s;
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char *r;
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int l = 0;
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while (*p && *p == ' ')
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{
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p++;
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}
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s = p;
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while (*p && (*p != ' ' && *p != '\t'))
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{
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l++;
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p++;
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}
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r = xmalloc (l + 1);
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memcpy (r, s, l);
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r[l] = 0;
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*ptr = p;
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return r;
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}
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static
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e7000_login (args, from_tty)
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char *args;
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int from_tty;
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{
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if (args)
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{
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machine = next (&args);
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user = next (&args);
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passwd = next (&args);
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dir = next (&args);
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if (from_tty)
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{
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printf ("Set info to %s %s %s %s\n", machine, user, passwd, dir);
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}
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}
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else
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{
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error ("Syntax is ftplogin <machine> <user> <passwd> <directory>");
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}
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}
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/* Start an ftp transfer from the E7000 to a host */
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static
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e7000_ftp (args, from_tty)
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char *args;
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int from_tty;
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{
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int oldtimeout = timeout;
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timeout = 10;
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printf_e7000debug ("ftp %s\r", machine);
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expect (" Username : ");
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printf_e7000debug ("%s\r", user);
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expect (" Password : ");
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write_e7000 (passwd);
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write_e7000 ("\r");
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expect ("success\r");
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expect ("FTP>");
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printf_e7000debug ("cd %s\r", dir);
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expect ("FTP>");
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printf_e7000debug ("ll 0;s:%s\r", args);
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expect ("FTP>");
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printf_e7000debug ("bye\r");
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expect (":");
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timeout = oldtimeout;
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}
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static void
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e7000_open (args, from_tty)
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char *args;
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int from_tty;
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{
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int n;
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char junk[100];
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int sync;
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target_preopen (from_tty);
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if (args)
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n = sscanf (args, " %s %d %s", dev_name, &baudrate, junk);
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else
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n = 0;
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if (n != 1 && n != 2)
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error ("Bad arguments. Usage:\ttarget e7000 <device> <speed>\n\
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or \t\ttarget e7000 <host>[:<port>]\n");
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if (n == 1 && strchr (dev_name, ':') == 0)
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{
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/* Default to normal telnet port */
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strcat (dev_name, ":23");
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}
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push_target (&e7000_ops);
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e7000_desc = SERIAL_OPEN (dev_name);
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if (!e7000_desc)
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perror_with_name (dev_name);
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using_tcp = strcmp (e7000_desc->ops->name, "tcp") == 0;
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SERIAL_SETBAUDRATE (e7000_desc, baudrate);
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SERIAL_RAW (e7000_desc);
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/* Hello? Are you there? */
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sync = 0;
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putchar_e7000 (CTRLC);
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while (!sync)
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{
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int c;
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if (from_tty)
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printf_unfiltered ("[waiting for e7000...]\n");
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write_e7000 ("\r\n");
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c = SERIAL_READCHAR (e7000_desc, 3);
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while (c != SERIAL_TIMEOUT)
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{
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/* Dont echo cr's */
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if (from_tty && c != '\r')
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{
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putchar (c);
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fflush (stdout);
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}
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if (c == ':')
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{
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sync = 1;
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}
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c = SERIAL_READCHAR (e7000_desc, 3);
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if (quit_flag)
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{
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putchar_e7000 (CTRLC);
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quit_flag = 0;
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}
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}
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}
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printf_e7000debug ("\r\n");
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expect_prompt ();
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if (from_tty)
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printf_filtered ("Remote %s connected to %s\n", target_shortname,
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dev_name);
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#ifdef GDB_TARGET_IS_H8300
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h8300hmode = 1;
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#endif
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}
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/* Close out all files and local state before this target loses control. */
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static void
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e7000_close (quitting)
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int quitting;
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{
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if (e7000_desc)
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{
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SERIAL_CLOSE (e7000_desc);
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e7000_desc = 0;
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}
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}
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/* Terminate the open connection to the remote debugger.
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Use this when you want to detach and do something else
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with your gdb. */
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static void
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e7000_detach (from_tty)
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int from_tty;
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{
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pop_target (); /* calls e7000_close to do the real work */
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if (from_tty)
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printf ("Ending remote %s debugging\n", target_shortname);
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}
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/* Tell the remote machine to resume. */
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static void
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e7000_resume (pid, step, sig)
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int pid, step, sig;
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{
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if (step)
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{
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printf_e7000debug ("S\r");
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}
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else
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{
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printf_e7000debug ("G\r");
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}
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}
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/* Read the remote registers into the block REGS.
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For the H8/300 a register dump looks like:
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PC=00021A CCR=80:I*******
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ER0 - ER3 0000000A 0000002E 0000002E 00000000
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ER4 - ER7 00000000 00000000 00000000 00FFEFF6
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000218 MOV.B R1L,R2L
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STEP NORMAL END or
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BREAK POINT
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*/
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#ifdef GDB_TARGET_IS_H8300
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char *want = "\n\
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PC=%p CCR=%c\n\
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ER0 - ER3 %0 %1 %2 %3\n\
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ER4 - ER7 %4 %5 %6 %7\n";
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char *want_nopc = "%p CCR=%c\n\
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ER0 - ER3 %0 %1 %2 %3\n\
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ER4 - ER7 %4 %5 %6 %7";
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#endif
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#ifdef GDB_TARGET_IS_SH
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char *want = "\n PC=%16 SR=%22\n\
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PR=%17 GBR=%18 VBR=%19\n\
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MACH=%20 MACL=%21\n\
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R0-7 %0 %1 %2 %3 %4 %5 %6 %7\n\
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R8-15 %8 %9 %10 %11 %12 %13 %14 %15\n";
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char *want_nopc = "%16 SR=%22\n\
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PR=%17 GBR=%18 VBR=%19\n\
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MACH=%20 MACL=%21\n\
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R0-7 %0 %1 %2 %3 %4 %5 %6 %7\n\
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R8-15 %8 %9 %10 %11 %12 %13 %14 %15";
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#endif
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static
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int
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gch ()
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{
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int c = readchar (timeout);
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if (echo)
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{
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if (c >= ' ')
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printf ("%c", c);
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else if (c == '\n')
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printf ("\n", c);
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}
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return c;
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}
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static
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unsigned int
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gbyte ()
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{
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int high = get_hex_digit (gch ());
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int low = get_hex_digit (gch ());
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return (high << 4) + low;
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}
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|
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void
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fetch_regs_from_dump (nextchar, want)
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int (*nextchar)();
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char *want;
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{
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int regno;
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char buf[MAX_REGISTER_RAW_SIZE];
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|
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int thischar = nextchar();
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while (*want)
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{
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switch (*want)
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{
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case '\n':
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while (thischar != '\n')
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thischar = nextchar();
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thischar = nextchar();
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while (thischar == '\r')
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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 = nextchar();
|
|
}
|
|
else {
|
|
error("out of sync in fetch registers");
|
|
}
|
|
|
|
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;
|
|
|
|
printf_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;
|
|
{
|
|
if (regno == -1)
|
|
{
|
|
e7000_store_registers ();
|
|
return;
|
|
}
|
|
#ifdef GDB_TARGET_IS_H8300
|
|
if (regno <= 7)
|
|
{
|
|
printf_e7000debug (".ER%d %x\r", regno,
|
|
read_register (regno));
|
|
|
|
}
|
|
else if (regno == PC_REGNUM)
|
|
{
|
|
printf_e7000debug (".PC %x\r",
|
|
read_register (regno));
|
|
}
|
|
else if (regno == CCR_REGNUM)
|
|
{
|
|
printf_e7000debug (".CCR %x\r",
|
|
read_register (regno));
|
|
}
|
|
#endif
|
|
|
|
#ifdef GDB_TARGET_IS_SH
|
|
switch (regno)
|
|
{
|
|
default:
|
|
printf_e7000debug (".R%d %x\r", regno,
|
|
read_register (regno));
|
|
|
|
break;
|
|
case PC_REGNUM:
|
|
printf_e7000debug (".PC %x\r",
|
|
read_register (regno));
|
|
break;
|
|
case SR_REGNUM:
|
|
printf_e7000debug (".SR %x\r",
|
|
read_register (regno));
|
|
break;
|
|
|
|
case PR_REGNUM:
|
|
printf_e7000debug (".PR %x\r",
|
|
read_register (regno));
|
|
break;
|
|
|
|
case GBR_REGNUM:
|
|
printf_e7000debug (".GBR %x\r",
|
|
read_register (regno));
|
|
break;
|
|
|
|
case VBR_REGNUM:
|
|
printf_e7000debug (".VBR %x\r",
|
|
read_register (regno));
|
|
break;
|
|
|
|
case MACH_REGNUM:
|
|
printf_e7000debug (".MACH %x\r",
|
|
read_register (regno));
|
|
break;
|
|
|
|
case MACL_REGNUM:
|
|
printf_e7000debug (".MACL %x\r",
|
|
read_register (regno));
|
|
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;
|
|
for (i = 0; i < len; i++)
|
|
{
|
|
if (((memaddr + i) & 3) == 0
|
|
&& (i + 3 < len))
|
|
{
|
|
/* Can be done with a long word */
|
|
printf_e7000debug ("m %x %x%02x%02x%02x;l\r",
|
|
memaddr + i,
|
|
myaddr[i],
|
|
myaddr[i + 1],
|
|
myaddr[i + 2],
|
|
myaddr[i + 3]);
|
|
i += 3;
|
|
}
|
|
else
|
|
{
|
|
printf_e7000debug ("m %x %x\r", memaddr + i, myaddr[i]);
|
|
}
|
|
}
|
|
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;
|
|
|
|
printf_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)
|
|
{
|
|
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;
|
|
/* Starting address of this pass. */
|
|
|
|
if (((memaddr - 1) + len) < memaddr)
|
|
{
|
|
errno = EIO;
|
|
return 0;
|
|
}
|
|
|
|
printf_e7000debug ("m %x;l\r", memaddr);
|
|
|
|
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)
|
|
printf_e7000debug(".\r");
|
|
else
|
|
printf_e7000debug("\r");
|
|
}
|
|
expect_prompt();
|
|
}
|
|
|
|
|
|
#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;
|
|
|
|
/* Starting address of this pass. */
|
|
|
|
if (((memaddr - 1) + len) < memaddr)
|
|
{
|
|
errno = EIO;
|
|
return 0;
|
|
}
|
|
|
|
printf_e7000debug ("d %x %x\r", memaddr, memaddr + len - 1);
|
|
|
|
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;
|
|
|
|
if (((memaddr - 1) + len) < memaddr)
|
|
{
|
|
errno = EIO;
|
|
return 0;
|
|
}
|
|
|
|
printf_e7000debug ("is %x@%x:s\r", memaddr, len);
|
|
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 */
|
|
}
|
|
|
|
#define MAX_E7000DEBUG_BREAKPOINTS 200
|
|
|
|
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;
|
|
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 */
|
|
e7000_read_inferior_memory (addr, shadow, 2);
|
|
e7000_write_inferior_memory (addr, nop, 2);
|
|
printf_e7000debug ("B %x\r", addr);
|
|
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;
|
|
|
|
for (i = 0; i < MAX_E7000DEBUG_BREAKPOINTS; i++)
|
|
if (breakaddr[i] == addr)
|
|
{
|
|
breakaddr[i] = 0;
|
|
printf_e7000debug ("B - %x\r", addr);
|
|
expect_prompt ();
|
|
/* Replace the insn under the break */
|
|
e7000_write_inferior_memory (addr, shadow, 2);
|
|
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;
|
|
{
|
|
|
|
if (!e7000_desc)
|
|
error ("e7000 target not open.");
|
|
if (!args)
|
|
{
|
|
printf_e7000debug ("\r");
|
|
}
|
|
else
|
|
{
|
|
printf_e7000debug ("%s\r", args);
|
|
}
|
|
echo++;
|
|
ctrl_c = 2;
|
|
expect_full_prompt ();
|
|
echo--;
|
|
ctrl_c = 0;
|
|
printf_unfiltered ("\n");
|
|
}
|
|
|
|
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;
|
|
printf_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);
|
|
}
|
|
}
|
|
|
|
e7000_noecho ()
|
|
{
|
|
echo = !echo;
|
|
if (echo)
|
|
printf_filtered ("Snoop enabled\n");
|
|
else
|
|
printf_filtered ("Snoop disabled\n");
|
|
|
|
}
|
|
|
|
#define NITEMS 3
|
|
static int
|
|
why_stop ()
|
|
{
|
|
static char *strings[NITEMS] =
|
|
{
|
|
"STEP NORMAL",
|
|
"BREAK POINT",
|
|
"BREAK KEY",
|
|
};
|
|
char *p[NITEMS];
|
|
int c;
|
|
p[0] = strings[0];
|
|
p[1] = strings[1];
|
|
p[2] = strings[2];
|
|
|
|
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];
|
|
store_signed_integer (buf,
|
|
REGISTER_RAW_SIZE(PC_REGNUM),
|
|
read_register (PC_REGNUM) -2);
|
|
supply_register (PC_REGNUM, buf);
|
|
printf_e7000debug (".PC %x\r", read_register (PC_REGNUM));
|
|
}
|
|
#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;
|
|
WAITTYPE *status;
|
|
{
|
|
int c;
|
|
int reset_pc;
|
|
int regno;
|
|
int running_count = 0;
|
|
int had_sleep = 0;
|
|
int loop = 1;
|
|
char *reg;
|
|
int time = 0;
|
|
WSETSTOP ((*status), 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 ();
|
|
|
|
switch (reset_pc)
|
|
{
|
|
case 1: /* Breakpoint */
|
|
|
|
WSETSTOP ((*status), SIGTRAP);
|
|
break;
|
|
case 0:
|
|
/* Single step */
|
|
WSETSTOP ((*status), SIGTRAP);
|
|
break;
|
|
case 2:
|
|
/* Interrupt */
|
|
if (had_sleep)
|
|
{
|
|
sub2_from_pc();
|
|
WSETSTOP ((*status), SIGTRAP);
|
|
}
|
|
else
|
|
{
|
|
WSETSTOP ((*status), SIGINT);
|
|
}
|
|
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,
|
|
0,0,/* e7000_insert_breakpoint,
|
|
e7000_remove_breakpoint, /* Breakpoints */
|
|
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 */
|
|
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.");
|
|
add_com ("snoop", class_obscure, e7000_noecho, "Toggle monitor echo.");
|
|
}
|