1360 lines
34 KiB
C
1360 lines
34 KiB
C
/* Remote debugging interface for AMD 290*0 Adapt Monitor Version 2.1d18.
|
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Copyright 1990, 1991, 1992 Free Software Foundation, Inc.
|
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Contributed by David Wood at New York University (wood@lab.ultra.nyu.edu).
|
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Adapted from work done at Cygnus Support in remote-eb.c.
|
||
|
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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
|
||
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.
|
||
|
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* This is like remote.c but is for an esoteric situation--
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having a 29k board attached to an Adapt inline monitor.
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The monitor is connected via serial line to a unix machine
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running gdb.
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3/91 - developed on Sun3 OS 4.1, by David Wood
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o - I can't get binary coff to load.
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o - I can't get 19200 baud rate to work.
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7/91 o - Freeze mode tracing can be done on a 29050. */
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#include "defs.h"
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||
#include "gdb_string.h"
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#include "inferior.h"
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#include "wait.h"
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#include "value.h"
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#include <ctype.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <errno.h>
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#include "terminal.h"
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#include "target.h"
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#include "gdbcore.h"
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/* External data declarations */
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extern int stop_soon_quietly; /* for wait_for_inferior */
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/* Forward data declarations */
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extern struct target_ops adapt_ops; /* Forward declaration */
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/* Forward function declarations */
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static void adapt_fetch_registers ();
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static void adapt_store_registers ();
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static void adapt_close ();
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static int adapt_clear_breakpoints();
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#define FREEZE_MODE (read_register(CPS_REGNUM) && 0x400)
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#define USE_SHADOW_PC ((processor_type == a29k_freeze_mode) && FREEZE_MODE)
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/* Can't seem to get binary coff working */
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#define ASCII_COFF /* Adapt will be downloaded with ascii coff */
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/* FIXME: Replace with `set remotedebug'. */
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#define LOG_FILE "adapt.log"
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#if defined (LOG_FILE)
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FILE *log_file=NULL;
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#endif
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static int timeout = 5;
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static char *dev_name;
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/* Descriptor for I/O to remote machine. Initialize it to -1 so that
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adapt_open knows that we don't have a file open when the program
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starts. */
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int adapt_desc = -1;
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/* stream which is fdopen'd from adapt_desc. Only valid when
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adapt_desc != -1. */
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FILE *adapt_stream;
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#define ON 1
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#define OFF 0
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static void
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rawmode(desc, turnon)
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int desc;
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int turnon;
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{
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TERMINAL sg;
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if (desc < 0)
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return;
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ioctl (desc, TIOCGETP, &sg);
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if (turnon) {
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#ifdef HAVE_TERMIO
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sg.c_lflag &= ~(ICANON);
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#else
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sg.sg_flags |= RAW;
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#endif
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} else {
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#ifdef HAVE_TERMIO
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sg.c_lflag |= ICANON;
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#else
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sg.sg_flags &= ~(RAW);
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#endif
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}
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ioctl (desc, TIOCSETP, &sg);
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}
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/* Suck up all the input from the adapt */
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slurp_input()
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{
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char buf[8];
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#ifdef HAVE_TERMIO
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/* termio does the timeout for us. */
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while (read (adapt_desc, buf, 8) > 0);
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#else
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alarm (timeout);
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while (read (adapt_desc, buf, 8) > 0);
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alarm (0);
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#endif
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}
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/* Read a character from the remote system, doing all the fancy
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timeout stuff. */
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static int
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readchar ()
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{
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char buf;
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buf = '\0';
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#ifdef HAVE_TERMIO
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/* termio does the timeout for us. */
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read (adapt_desc, &buf, 1);
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#else
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alarm (timeout);
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if (read (adapt_desc, &buf, 1) < 0)
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{
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if (errno == EINTR)
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error ("Timeout reading from remote system.");
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else
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perror_with_name ("remote");
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||
}
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alarm (0);
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#endif
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if (buf == '\0')
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error ("Timeout reading from remote system.");
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#if defined (LOG_FILE)
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putc (buf & 0x7f, log_file);
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#endif
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return buf & 0x7f;
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}
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/* Keep discarding input from the remote system, until STRING is found.
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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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||
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fflush(adapt_stream);
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immediate_quit = 1;
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while (1)
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{
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if (readchar() == *p)
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{
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p++;
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if (*p == '\0')
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{
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immediate_quit = 0;
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return;
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}
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}
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else
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p = string;
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}
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}
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/* Keep discarding input until we see the adapt 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: adapt_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 adapt_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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#if defined (LOG_FILE)
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/* This is a convenient place to do this. The idea is to do it often
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enough that we never lose much data if we terminate abnormally. */
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fflush (log_file);
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#endif
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fflush(adapt_stream);
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expect ("\n# ");
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}
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/* Get a hex digit from the remote system & return its value.
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If ignore_space is nonzero, ignore spaces (not newline, tab, etc). */
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static int
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get_hex_digit (ignore_space)
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int ignore_space;
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{
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int ch;
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while (1)
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{
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ch = readchar ();
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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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else if (ch == ' ' && ignore_space)
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;
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else
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{
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expect_prompt ();
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error ("Invalid hex digit from remote system.");
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}
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}
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}
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/* Get a byte from adapt_desc and put it in *BYT. Accept any number
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leading spaces. */
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static void
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get_hex_byte (byt)
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char *byt;
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{
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int val;
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val = get_hex_digit (1) << 4;
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val |= get_hex_digit (0);
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*byt = val;
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}
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/* Read a 32-bit hex word from the adapt, preceded by a space */
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static long
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get_hex_word()
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{
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long val;
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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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return val;
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}
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/* Get N 32-bit hex 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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while (n--) {
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val = get_hex_word();
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supply_register(regno++,(char *) &val);
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}
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}
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/* Called when SIGALRM signal sent due to alarm() timeout. */
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#ifndef HAVE_TERMIO
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#ifndef __STDC__
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# ifndef volatile
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# define volatile /**/
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# endif
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#endif
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volatile int n_alarms;
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void
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adapt_timer ()
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{
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#if 0
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if (kiodebug)
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printf ("adapt_timer called\n");
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#endif
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n_alarms++;
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}
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#endif
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/* malloc'd name of the program on the remote system. */
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static char *prog_name = NULL;
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/* Number of SIGTRAPs we need to simulate. That is, the next
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NEED_ARTIFICIAL_TRAP calls to adapt_wait should just return
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SIGTRAP without actually waiting for anything. */
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static int need_artificial_trap = 0;
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||
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void
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adapt_kill(arg,from_tty)
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char *arg;
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int from_tty;
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{
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fprintf (adapt_stream, "K");
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fprintf (adapt_stream, "\r");
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expect_prompt ();
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}
|
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/*
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* Download a file specified in 'args', to the adapt.
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* FIXME: Assumes the file to download is a binary coff file.
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*/
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static void
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adapt_load(args,fromtty)
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char *args;
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int fromtty;
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{
|
||
FILE *fp;
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int n;
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char buffer[1024];
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||
|
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if (!adapt_stream) {
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printf_filtered("Adapt not open. Use 'target' command to open adapt\n");
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return;
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}
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|
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/* OK, now read in the file. Y=read, C=COFF, T=dTe port
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0=start address. */
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#ifdef ASCII_COFF /* Ascii coff */
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fprintf (adapt_stream, "YA T,0\r");
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fflush(adapt_stream); /* Just in case */
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/* FIXME: should check args for only 1 argument */
|
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sprintf(buffer,"cat %s | btoa > /tmp/#adapt-btoa",args);
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system(buffer);
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fp = fopen("/tmp/#adapt-btoa","r");
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rawmode(adapt_desc,OFF);
|
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while (n=fread(buffer,1,1024,fp)) {
|
||
do { n -= write(adapt_desc,buffer,n); } while (n>0);
|
||
if (n<0) { perror("writing ascii coff"); break; }
|
||
}
|
||
fclose(fp);
|
||
rawmode(adapt_desc,ON);
|
||
system("rm /tmp/#adapt-btoa");
|
||
#else /* Binary coff - can't get it to work .*/
|
||
fprintf (adapt_stream, "YC T,0\r");
|
||
fflush(adapt_stream); /* Just in case */
|
||
if (!(fp = fopen(args,"r"))) {
|
||
printf_filtered("Can't open %s\n",args);
|
||
return;
|
||
}
|
||
while (n=fread(buffer,1,512,fp)) {
|
||
do { n -= write(adapt_desc,buffer,n); } while (n>0);
|
||
if (n<0) { perror("writing ascii coff"); break; }
|
||
}
|
||
fclose(fp);
|
||
#endif
|
||
expect_prompt (); /* Skip garbage that comes out */
|
||
fprintf (adapt_stream, "\r");
|
||
expect_prompt ();
|
||
}
|
||
|
||
/* This is called not only when we first attach, but also when the
|
||
user types "run" after having attached. */
|
||
void
|
||
adapt_create_inferior (execfile, args, env)
|
||
char *execfile;
|
||
char *args;
|
||
char **env;
|
||
{
|
||
int entry_pt;
|
||
|
||
if (args && *args)
|
||
error ("Can't pass arguments to remote adapt process.");
|
||
|
||
if (execfile == 0 || exec_bfd == 0)
|
||
error ("No exec file specified");
|
||
|
||
entry_pt = (int) bfd_get_start_address (exec_bfd);
|
||
|
||
if (adapt_stream) {
|
||
adapt_kill(NULL,NULL);
|
||
adapt_clear_breakpoints();
|
||
init_wait_for_inferior ();
|
||
/* Clear the input because what the adapt sends back is different
|
||
* depending on whether it was running or not.
|
||
*/
|
||
slurp_input(); /* After this there should be a prompt */
|
||
fprintf(adapt_stream,"\r");
|
||
expect_prompt();
|
||
printf_filtered("Do you want to download '%s' (y/n)? [y] : ",prog_name);
|
||
{
|
||
char buffer[10];
|
||
gets(buffer);
|
||
if (*buffer != 'n') {
|
||
adapt_load(prog_name,0);
|
||
}
|
||
}
|
||
|
||
#ifdef NOTDEF
|
||
/* Set the PC and wait for a go/cont */
|
||
fprintf (adapt_stream, "G %x,N\r",entry_pt);
|
||
printf_filtered("Now use the 'continue' command to start.\n");
|
||
expect_prompt ();
|
||
#else
|
||
insert_breakpoints (); /* Needed to get correct instruction in cache */
|
||
proceed(entry_pt, TARGET_SIGNAL_DEFAULT, 0);
|
||
#endif
|
||
|
||
} else {
|
||
printf_filtered("Adapt not open yet.\n");
|
||
}
|
||
}
|
||
|
||
/* Translate baud rates from integers to damn B_codes. Unix should
|
||
have outgrown this crap years ago, but even POSIX wouldn't buck it. */
|
||
|
||
#ifndef B19200
|
||
#define B19200 EXTA
|
||
#endif
|
||
#ifndef B38400
|
||
#define B38400 EXTB
|
||
#endif
|
||
|
||
static struct {int rate, damn_b;} baudtab[] = {
|
||
{0, B0},
|
||
{50, B50},
|
||
{75, B75},
|
||
{110, B110},
|
||
{134, B134},
|
||
{150, B150},
|
||
{200, B200},
|
||
{300, B300},
|
||
{600, B600},
|
||
{1200, B1200},
|
||
{1800, B1800},
|
||
{2400, B2400},
|
||
{4800, B4800},
|
||
{9600, B9600},
|
||
{19200, B19200},
|
||
{38400, B38400},
|
||
{-1, -1},
|
||
};
|
||
|
||
static int damn_b (rate)
|
||
int rate;
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; baudtab[i].rate != -1; i++)
|
||
if (rate == baudtab[i].rate) return baudtab[i].damn_b;
|
||
return B38400; /* Random */
|
||
}
|
||
|
||
|
||
/* Open a connection to a remote debugger.
|
||
NAME is the filename used for communication, then a space,
|
||
then the baud rate.
|
||
*/
|
||
|
||
static int baudrate = 9600;
|
||
static void
|
||
adapt_open (name, from_tty)
|
||
char *name;
|
||
int from_tty;
|
||
{
|
||
TERMINAL sg;
|
||
unsigned int prl;
|
||
char *p;
|
||
|
||
/* Find the first whitespace character, it separates dev_name from
|
||
prog_name. */
|
||
if (name == 0)
|
||
goto erroid;
|
||
|
||
for (p = name;
|
||
*p != '\0' && !isspace (*p); p++)
|
||
;
|
||
if (*p == '\0')
|
||
erroid:
|
||
error ("\
|
||
Please include the name of the device for the serial port,\n\
|
||
the baud rate, and the name of the program to run on the remote system.");
|
||
dev_name = (char*)xmalloc(p - name + 1);
|
||
strncpy (dev_name, name, p - name);
|
||
dev_name[p - name] = '\0';
|
||
|
||
/* Skip over the whitespace after dev_name */
|
||
for (; isspace (*p); p++)
|
||
/*EMPTY*/;
|
||
|
||
if (1 != sscanf (p, "%d ", &baudrate))
|
||
goto erroid;
|
||
|
||
/* Skip the number and then the spaces */
|
||
for (; isdigit (*p); p++)
|
||
/*EMPTY*/;
|
||
for (; isspace (*p); p++)
|
||
/*EMPTY*/;
|
||
|
||
if (prog_name != NULL)
|
||
free (prog_name);
|
||
prog_name = savestring (p, strlen (p));
|
||
|
||
adapt_close (0);
|
||
|
||
adapt_desc = open (dev_name, O_RDWR);
|
||
if (adapt_desc < 0)
|
||
perror_with_name (dev_name);
|
||
ioctl (adapt_desc, TIOCGETP, &sg);
|
||
#ifdef HAVE_TERMIO
|
||
sg.c_cc[VMIN] = 0; /* read with timeout. */
|
||
sg.c_cc[VTIME] = timeout * 10;
|
||
sg.c_lflag &= ~(ICANON | ECHO);
|
||
sg.c_cflag = (sg.c_cflag & ~CBAUD) | damn_b (baudrate);
|
||
#else
|
||
sg.sg_ispeed = damn_b (baudrate);
|
||
sg.sg_ospeed = damn_b (baudrate);
|
||
sg.sg_flags |= RAW | ANYP;
|
||
sg.sg_flags &= ~ECHO;
|
||
#endif
|
||
|
||
ioctl (adapt_desc, TIOCSETP, &sg);
|
||
adapt_stream = fdopen (adapt_desc, "r+");
|
||
|
||
push_target (&adapt_ops);
|
||
|
||
#ifndef HAVE_TERMIO
|
||
#ifndef NO_SIGINTERRUPT
|
||
/* Cause SIGALRM's to make reads fail with EINTR instead of resuming
|
||
the read. */
|
||
if (siginterrupt (SIGALRM, 1) != 0)
|
||
perror ("adapt_open: error in siginterrupt");
|
||
#endif
|
||
|
||
/* Set up read timeout timer. */
|
||
if ((void (*)) signal (SIGALRM, adapt_timer) == (void (*)) -1)
|
||
perror ("adapt_open: error in signal");
|
||
#endif
|
||
|
||
#if defined (LOG_FILE)
|
||
log_file = fopen (LOG_FILE, "w");
|
||
if (log_file == NULL)
|
||
perror_with_name (LOG_FILE);
|
||
#endif
|
||
|
||
/* Put this port into NORMAL mode, send the 'normal' character */
|
||
write(adapt_desc, "", 1); /* Control A */
|
||
write(adapt_desc, "\r", 1);
|
||
expect_prompt ();
|
||
|
||
/* Hello? Are you there? */
|
||
write (adapt_desc, "\r", 1);
|
||
|
||
expect_prompt ();
|
||
|
||
/* Clear any break points */
|
||
adapt_clear_breakpoints();
|
||
|
||
/* Print out some stuff, letting the user now what's going on */
|
||
printf_filtered("Connected to an Adapt via %s.\n", dev_name);
|
||
/* FIXME: can this restriction be removed? */
|
||
printf_filtered("Remote debugging using virtual addresses works only\n");
|
||
printf_filtered("\twhen virtual addresses map 1:1 to physical addresses.\n");
|
||
if (processor_type != a29k_freeze_mode) {
|
||
fprintf_filtered(stderr,
|
||
"Freeze-mode debugging not available, and can only be done on an A29050.\n");
|
||
}
|
||
}
|
||
|
||
/* Close out all files and local state before this target loses control. */
|
||
|
||
static void
|
||
adapt_close (quitting)
|
||
int quitting;
|
||
{
|
||
|
||
/* Clear any break points */
|
||
adapt_clear_breakpoints();
|
||
|
||
/* Put this port back into REMOTE mode */
|
||
if (adapt_stream) {
|
||
fflush(adapt_stream);
|
||
sleep(1); /* Let any output make it all the way back */
|
||
write(adapt_desc, "R\r", 2);
|
||
}
|
||
|
||
/* Due to a bug in Unix, fclose closes not only the stdio stream,
|
||
but also the file descriptor. So we don't actually close
|
||
adapt_desc. */
|
||
if (adapt_stream)
|
||
fclose (adapt_stream); /* This also closes adapt_desc */
|
||
if (adapt_desc >= 0)
|
||
/* close (adapt_desc); */
|
||
|
||
/* Do not try to close adapt_desc again, later in the program. */
|
||
adapt_stream = NULL;
|
||
adapt_desc = -1;
|
||
|
||
#if defined (LOG_FILE)
|
||
if (log_file) {
|
||
if (ferror (log_file))
|
||
printf_filtered ("Error writing log file.\n");
|
||
if (fclose (log_file) != 0)
|
||
printf_filtered ("Error closing log file.\n");
|
||
log_file = NULL;
|
||
}
|
||
#endif
|
||
}
|
||
|
||
/* Attach to the target that is already loaded and possibly running */
|
||
static void
|
||
adapt_attach (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
|
||
if (from_tty)
|
||
printf_filtered ("Attaching to remote program %s.\n", prog_name);
|
||
|
||
/* Send the adapt a kill. It is ok if it is not already running */
|
||
fprintf(adapt_stream, "K\r"); fflush(adapt_stream);
|
||
expect_prompt(); /* Slurp the echo */
|
||
}
|
||
|
||
|
||
/* Terminate the open connection to the remote debugger.
|
||
Use this when you want to detach and do something else
|
||
with your gdb. */
|
||
void
|
||
adapt_detach (args,from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
|
||
if (adapt_stream) { /* Send it on its way (tell it to continue) */
|
||
adapt_clear_breakpoints();
|
||
fprintf(adapt_stream,"G\r");
|
||
}
|
||
|
||
pop_target(); /* calls adapt_close to do the real work */
|
||
if (from_tty)
|
||
printf_filtered ("Ending remote %s debugging\n", target_shortname);
|
||
}
|
||
|
||
/* Tell the remote machine to resume. */
|
||
|
||
void
|
||
adapt_resume (pid, step, sig)
|
||
int pid, step;
|
||
enum target_signal sig;
|
||
{
|
||
if (step)
|
||
{
|
||
write (adapt_desc, "t 1,s\r", 6);
|
||
/* Wait for the echo. */
|
||
expect ("t 1,s\r\n");
|
||
/* Then comes a line containing the instruction we stepped to. */
|
||
expect ("@");
|
||
/* Then we get the prompt. */
|
||
expect_prompt ();
|
||
|
||
/* Force the next adapt_wait to return a trap. Not doing anything
|
||
about I/O from the target means that the user has to type
|
||
"continue" to see any. FIXME, this should be fixed. */
|
||
need_artificial_trap = 1;
|
||
}
|
||
else
|
||
{
|
||
write (adapt_desc, "G\r", 2);
|
||
/* Swallow the echo. */
|
||
expect_prompt();
|
||
}
|
||
}
|
||
|
||
/* Wait until the remote machine stops, then return,
|
||
storing status in STATUS just as `wait' would. */
|
||
|
||
int
|
||
adapt_wait (status)
|
||
struct target_waitstatus *status;
|
||
{
|
||
/* Strings to look for. '?' means match any single character.
|
||
Note that with the algorithm we use, the initial character
|
||
of the string cannot recur in the string, or we will not
|
||
find some cases of the string in the input. */
|
||
|
||
static char bpt[] = "@";
|
||
/* It would be tempting to look for "\n[__exit + 0x8]\n"
|
||
but that requires loading symbols with "yc i" and even if
|
||
we did do that we don't know that the file has symbols. */
|
||
static char exitmsg[] = "@????????I JMPTI GR121,LR0";
|
||
char *bp = bpt;
|
||
char *ep = exitmsg;
|
||
|
||
/* Large enough for either sizeof (bpt) or sizeof (exitmsg) chars. */
|
||
char swallowed[50];
|
||
/* Current position in swallowed. */
|
||
char *swallowed_p = swallowed;
|
||
|
||
int ch;
|
||
int ch_handled;
|
||
int old_timeout = timeout;
|
||
int old_immediate_quit = immediate_quit;
|
||
|
||
status->kind = TARGET_WAITKIND_EXITED;
|
||
status->value.integer = 0;
|
||
|
||
if (need_artificial_trap != 0)
|
||
{
|
||
status->kind = TARGET_WAITKIND_STOPPED;
|
||
status->value.sig = TARGET_SIGNAL_TRAP;
|
||
need_artificial_trap--;
|
||
return 0;
|
||
}
|
||
|
||
timeout = 0; /* Don't time out -- user program is running. */
|
||
immediate_quit = 1; /* Helps ability to QUIT */
|
||
while (1) {
|
||
QUIT; /* Let user quit and leave process running */
|
||
ch_handled = 0;
|
||
ch = readchar ();
|
||
if (ch == *bp) {
|
||
bp++;
|
||
if (*bp == '\0')
|
||
break;
|
||
ch_handled = 1;
|
||
|
||
*swallowed_p++ = ch;
|
||
} else
|
||
bp = bpt;
|
||
if (ch == *ep || *ep == '?') {
|
||
ep++;
|
||
if (*ep == '\0')
|
||
break;
|
||
|
||
if (!ch_handled)
|
||
*swallowed_p++ = ch;
|
||
ch_handled = 1;
|
||
} else
|
||
ep = exitmsg;
|
||
if (!ch_handled) {
|
||
char *p;
|
||
/* Print out any characters which have been swallowed. */
|
||
for (p = swallowed; p < swallowed_p; ++p)
|
||
putc (*p, stdout);
|
||
swallowed_p = swallowed;
|
||
putc (ch, stdout);
|
||
}
|
||
}
|
||
expect_prompt ();
|
||
if (*bp== '\0')
|
||
{
|
||
status->kind = TARGET_WAITKIND_STOPPED;
|
||
status->value.sig = TARGET_SIGNAL_TRAP;
|
||
}
|
||
else
|
||
{
|
||
status->kind = TARGET_WAITKIND_EXITED;
|
||
status->value.integer = 0;
|
||
}
|
||
timeout = old_timeout;
|
||
immediate_quit = old_immediate_quit;
|
||
return 0;
|
||
}
|
||
|
||
/* Return the name of register number REGNO
|
||
in the form input and output by adapt.
|
||
|
||
Returns a pointer to a static buffer containing the answer. */
|
||
static char *
|
||
get_reg_name (regno)
|
||
int regno;
|
||
{
|
||
static char buf[80];
|
||
if (regno >= GR96_REGNUM && regno < GR96_REGNUM + 32 )
|
||
sprintf (buf, "GR%03d", regno - GR96_REGNUM + 96);
|
||
#if defined(GR64_REGNUM)
|
||
else if (regno >= GR64_REGNUM && regno < GR64_REGNUM + 32 )
|
||
sprintf (buf, "GR%03d", regno - GR64_REGNUM + 64);
|
||
#endif
|
||
else if (regno >= LR0_REGNUM && regno < LR0_REGNUM + 128)
|
||
sprintf (buf, "LR%03d", regno - LR0_REGNUM);
|
||
else if (regno == Q_REGNUM)
|
||
strcpy (buf, "SR131");
|
||
else if (regno >= BP_REGNUM && regno <= CR_REGNUM)
|
||
sprintf (buf, "SR%03d", regno - BP_REGNUM + 133);
|
||
else if (regno == ALU_REGNUM)
|
||
strcpy (buf, "SR132");
|
||
else if (regno >= IPC_REGNUM && regno <= IPB_REGNUM)
|
||
sprintf (buf, "SR%03d", regno - IPC_REGNUM + 128);
|
||
else if (regno >= VAB_REGNUM && regno <= LRU_REGNUM) {
|
||
/* When a 29050 is in freeze-mode, read shadow pcs instead */
|
||
if ((regno >= NPC_REGNUM && regno <= PC2_REGNUM) && USE_SHADOW_PC)
|
||
sprintf (buf, "SR%03d", regno - NPC_REGNUM + 20);
|
||
else
|
||
sprintf (buf, "SR%03d", regno - VAB_REGNUM);
|
||
}
|
||
else if (regno == GR1_REGNUM)
|
||
strcpy (buf, "GR001");
|
||
return buf;
|
||
}
|
||
|
||
/* Read the remote registers. */
|
||
|
||
static void
|
||
adapt_fetch_registers ()
|
||
{
|
||
int reg_index;
|
||
int regnum_index;
|
||
char tempbuf[10];
|
||
int sreg_buf[16];
|
||
int i,j;
|
||
|
||
/*
|
||
* Global registers
|
||
*/
|
||
#if defined(GR64_REGNUM)
|
||
write (adapt_desc, "dw gr64,gr95\r", 13);
|
||
for (reg_index = 64, regnum_index = GR64_REGNUM;
|
||
reg_index < 96;
|
||
reg_index += 4, regnum_index += 4)
|
||
{
|
||
sprintf (tempbuf, "GR%03d ", reg_index);
|
||
expect (tempbuf);
|
||
get_hex_regs (4, regnum_index);
|
||
expect ("\n");
|
||
}
|
||
#endif
|
||
write (adapt_desc, "dw gr96,gr127\r", 14);
|
||
for (reg_index = 96, regnum_index = GR96_REGNUM;
|
||
reg_index < 128;
|
||
reg_index += 4, regnum_index += 4)
|
||
{
|
||
sprintf (tempbuf, "GR%03d ", reg_index);
|
||
expect (tempbuf);
|
||
get_hex_regs (4, regnum_index);
|
||
expect ("\n");
|
||
}
|
||
|
||
/*
|
||
* Local registers
|
||
*/
|
||
for (i = 0; i < 128; i += 32)
|
||
{
|
||
/* The PC has a tendency to hang if we get these
|
||
all in one fell swoop ("dw lr0,lr127"). */
|
||
sprintf (tempbuf, "dw lr%d\r", i);
|
||
write (adapt_desc, tempbuf, strlen (tempbuf));
|
||
for (reg_index = i, regnum_index = LR0_REGNUM + i;
|
||
reg_index < i + 32;
|
||
reg_index += 4, regnum_index += 4)
|
||
{
|
||
sprintf (tempbuf, "LR%03d ", reg_index);
|
||
expect (tempbuf);
|
||
get_hex_regs (4, regnum_index);
|
||
expect ("\n");
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Special registers
|
||
*/
|
||
sprintf (tempbuf, "dw sr0\r");
|
||
write (adapt_desc, tempbuf, strlen (tempbuf));
|
||
for (i=0 ; i<4 ; i++) { /* SR0 - SR14 */
|
||
sprintf (tempbuf, "SR%3d",i*4);
|
||
expect(tempbuf);
|
||
for (j=0 ; j < (i==3 ? 3 : 4) ; j++)
|
||
sreg_buf[i*4 + j] = get_hex_word();
|
||
}
|
||
expect_prompt();
|
||
/*
|
||
* Read the pcs individually if we are in freeze mode.
|
||
* See get_reg_name(), it translates the register names for the pcs to
|
||
* the names of the shadow pcs.
|
||
*/
|
||
if (USE_SHADOW_PC) {
|
||
sreg_buf[10] = read_register(NPC_REGNUM); /* pc0 */
|
||
sreg_buf[11] = read_register(PC_REGNUM); /* pc1 */
|
||
sreg_buf[12] = read_register(PC2_REGNUM); /* pc2 */
|
||
}
|
||
for (i=0 ; i<14 ; i++) /* Supply vab -> lru */
|
||
supply_register(VAB_REGNUM+i, (char *) &sreg_buf[i]);
|
||
sprintf (tempbuf, "dw sr128\r");
|
||
write (adapt_desc, tempbuf, strlen (tempbuf));
|
||
for (i=0 ; i<2 ; i++) { /* SR128 - SR135 */
|
||
sprintf (tempbuf, "SR%3d",128 + i*4);
|
||
expect(tempbuf);
|
||
for (j=0 ; j<4 ; j++)
|
||
sreg_buf[i*4 + j] = get_hex_word();
|
||
}
|
||
expect_prompt();
|
||
supply_register(IPC_REGNUM,(char *) &sreg_buf[0]);
|
||
supply_register(IPA_REGNUM,(char *) &sreg_buf[1]);
|
||
supply_register(IPB_REGNUM,(char *) &sreg_buf[2]);
|
||
supply_register(Q_REGNUM, (char *) &sreg_buf[3]);
|
||
/* Skip ALU */
|
||
supply_register(BP_REGNUM, (char *) &sreg_buf[5]);
|
||
supply_register(FC_REGNUM, (char *) &sreg_buf[6]);
|
||
supply_register(CR_REGNUM, (char *) &sreg_buf[7]);
|
||
|
||
/* There doesn't seem to be any way to get these. */
|
||
{
|
||
int val = -1;
|
||
supply_register (FPE_REGNUM, (char *) &val);
|
||
supply_register (INTE_REGNUM, (char *) &val);
|
||
supply_register (FPS_REGNUM, (char *) &val);
|
||
supply_register (EXO_REGNUM, (char *) &val);
|
||
}
|
||
|
||
write (adapt_desc, "dw gr1,gr1\r", 11);
|
||
expect ("GR001 ");
|
||
get_hex_regs (1, GR1_REGNUM);
|
||
expect_prompt ();
|
||
}
|
||
|
||
/* Fetch register REGNO, or all registers if REGNO is -1.
|
||
*/
|
||
static void
|
||
adapt_fetch_register (regno)
|
||
int regno;
|
||
{
|
||
if (regno == -1)
|
||
adapt_fetch_registers ();
|
||
else
|
||
{
|
||
char *name = get_reg_name (regno);
|
||
fprintf (adapt_stream, "dw %s,%s\r", name, name);
|
||
expect (name);
|
||
expect (" ");
|
||
get_hex_regs (1, regno);
|
||
expect_prompt ();
|
||
}
|
||
}
|
||
|
||
/* Store the remote registers from the contents of the block REGS. */
|
||
|
||
static void
|
||
adapt_store_registers ()
|
||
{
|
||
int i, j;
|
||
|
||
fprintf (adapt_stream, "s gr1,%x\r", read_register (GR1_REGNUM));
|
||
expect_prompt ();
|
||
|
||
#if defined(GR64_REGNUM)
|
||
for (j = 0; j < 32; j += 16)
|
||
{
|
||
fprintf (adapt_stream, "s gr%d,", j + 64);
|
||
for (i = 0; i < 15; ++i)
|
||
fprintf (adapt_stream, "%x,", read_register (GR64_REGNUM + j + i));
|
||
fprintf (adapt_stream, "%x\r", read_register (GR64_REGNUM + j + 15));
|
||
expect_prompt ();
|
||
}
|
||
#endif
|
||
for (j = 0; j < 32; j += 16)
|
||
{
|
||
fprintf (adapt_stream, "s gr%d,", j + 96);
|
||
for (i = 0; i < 15; ++i)
|
||
fprintf (adapt_stream, "%x,", read_register (GR96_REGNUM + j + i));
|
||
fprintf (adapt_stream, "%x\r", read_register (GR96_REGNUM + j + 15));
|
||
expect_prompt ();
|
||
}
|
||
|
||
for (j = 0; j < 128; j += 16)
|
||
{
|
||
fprintf (adapt_stream, "s lr%d,", j);
|
||
for (i = 0; i < 15; ++i)
|
||
fprintf (adapt_stream, "%x,", read_register (LR0_REGNUM + j + i));
|
||
fprintf (adapt_stream, "%x\r", read_register (LR0_REGNUM + j + 15));
|
||
expect_prompt ();
|
||
}
|
||
|
||
fprintf (adapt_stream, "s sr128,%x,%x,%x\r", read_register (IPC_REGNUM),
|
||
read_register (IPA_REGNUM), read_register (IPB_REGNUM));
|
||
expect_prompt ();
|
||
fprintf (adapt_stream, "s sr133,%x,%x,%x\r", read_register (BP_REGNUM),
|
||
read_register (FC_REGNUM), read_register (CR_REGNUM));
|
||
expect_prompt ();
|
||
fprintf (adapt_stream, "s sr131,%x\r", read_register (Q_REGNUM));
|
||
expect_prompt ();
|
||
fprintf (adapt_stream, "s sr0,");
|
||
for (i=0 ; i<7 ; ++i)
|
||
fprintf (adapt_stream, "%x,", read_register (VAB_REGNUM + i));
|
||
expect_prompt ();
|
||
fprintf (adapt_stream, "s sr7,");
|
||
for (i=7; i<14 ; ++i)
|
||
fprintf (adapt_stream, "%x,", read_register (VAB_REGNUM + i));
|
||
expect_prompt ();
|
||
}
|
||
|
||
/* Store register REGNO, or all if REGNO == -1.
|
||
Return errno value. */
|
||
void
|
||
adapt_store_register (regno)
|
||
int regno;
|
||
{
|
||
/* printf("adapt_store_register() called.\n"); fflush(stdout); /* */
|
||
if (regno == -1)
|
||
adapt_store_registers ();
|
||
else
|
||
{
|
||
char *name = get_reg_name (regno);
|
||
fprintf (adapt_stream, "s %s,%x\r", name, read_register (regno));
|
||
/* Setting GR1 changes the numbers of all the locals, so
|
||
invalidate the register cache. Do this *after* calling
|
||
read_register, because we want read_register to return the
|
||
value that write_register has just stuffed into the registers
|
||
array, not the value of the register fetched from the
|
||
inferior. */
|
||
if (regno == GR1_REGNUM)
|
||
registers_changed ();
|
||
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. */
|
||
|
||
void
|
||
adapt_prepare_to_store ()
|
||
{
|
||
/* Do nothing, since we can store individual regs */
|
||
}
|
||
|
||
static CORE_ADDR
|
||
translate_addr(addr)
|
||
CORE_ADDR addr;
|
||
{
|
||
#if defined(KERNEL_DEBUGGING)
|
||
/* Check for a virtual address in the kernel */
|
||
/* Assume physical address of ublock is in paddr_u register */
|
||
if (addr >= UVADDR) {
|
||
/* PADDR_U register holds the physical address of the ublock */
|
||
CORE_ADDR i = (CORE_ADDR)read_register(PADDR_U_REGNUM);
|
||
return(i + addr - (CORE_ADDR)UVADDR);
|
||
} else {
|
||
return(addr);
|
||
}
|
||
#else
|
||
return(addr);
|
||
#endif
|
||
}
|
||
|
||
|
||
/* FIXME! Merge these two. */
|
||
int
|
||
adapt_xfer_inferior_memory (memaddr, myaddr, len, write)
|
||
CORE_ADDR memaddr;
|
||
char *myaddr;
|
||
int len;
|
||
int write;
|
||
{
|
||
|
||
memaddr = translate_addr(memaddr);
|
||
|
||
if (write)
|
||
return adapt_write_inferior_memory (memaddr, myaddr, len);
|
||
else
|
||
return adapt_read_inferior_memory (memaddr, myaddr, len);
|
||
}
|
||
|
||
void
|
||
adapt_files_info ()
|
||
{
|
||
printf_filtered("\tAttached to %s at %d baud and running program %s\n",
|
||
dev_name, baudrate, prog_name);
|
||
printf_filtered("\ton an %s processor.\n", processor_name[processor_type]);
|
||
}
|
||
|
||
/* Copy LEN bytes of data from debugger memory at MYADDR
|
||
to inferior's memory at MEMADDR. Returns errno value.
|
||
* sb/sh instructions don't work on unaligned addresses, when TU=1.
|
||
*/
|
||
int
|
||
adapt_write_inferior_memory (memaddr, myaddr, len)
|
||
CORE_ADDR memaddr;
|
||
char *myaddr;
|
||
int len;
|
||
{
|
||
int i;
|
||
unsigned int cps;
|
||
|
||
/* Turn TU bit off so we can do 'sb' commands */
|
||
cps = read_register(CPS_REGNUM);
|
||
if (cps & 0x00000800)
|
||
write_register(CPS_REGNUM,cps&~(0x00000800));
|
||
|
||
for (i = 0; i < len; i++)
|
||
{
|
||
if ((i % 16) == 0)
|
||
fprintf (adapt_stream, "sb %x,", memaddr + i);
|
||
if ((i % 16) == 15 || i == len - 1)
|
||
{
|
||
fprintf (adapt_stream, "%x\r", ((unsigned char *)myaddr)[i]);
|
||
expect_prompt ();
|
||
}
|
||
else
|
||
fprintf (adapt_stream, "%x,", ((unsigned char *)myaddr)[i]);
|
||
}
|
||
/* Restore the old value of cps if the TU bit was on */
|
||
if (cps & 0x00000800)
|
||
write_register(CPS_REGNUM,cps);
|
||
return len;
|
||
}
|
||
|
||
/* Read LEN bytes from inferior memory at MEMADDR. Put the result
|
||
at debugger address MYADDR. Returns errno value. */
|
||
int
|
||
adapt_read_inferior_memory(memaddr, myaddr, len)
|
||
CORE_ADDR memaddr;
|
||
char *myaddr;
|
||
int len;
|
||
{
|
||
int i;
|
||
|
||
/* Number of bytes read so far. */
|
||
int count;
|
||
|
||
/* Starting address of this pass. */
|
||
unsigned long startaddr;
|
||
|
||
/* Number of bytes to read in this pass. */
|
||
int len_this_pass;
|
||
|
||
/* Note that this code works correctly if startaddr is just less
|
||
than UINT_MAX (well, really CORE_ADDR_MAX if there was such a
|
||
thing). That is, something like
|
||
adapt_read_bytes (CORE_ADDR_MAX - 4, foo, 4)
|
||
works--it never adds len to memaddr and gets 0. */
|
||
/* However, something like
|
||
adapt_read_bytes (CORE_ADDR_MAX - 3, foo, 4)
|
||
doesn't need to work. Detect it and give up if there's an attempt
|
||
to do that. */
|
||
|
||
if (((memaddr - 1) + len) < memaddr)
|
||
return EIO;
|
||
|
||
startaddr = memaddr;
|
||
count = 0;
|
||
while (count < len)
|
||
{
|
||
len_this_pass = 16;
|
||
if ((startaddr % 16) != 0)
|
||
len_this_pass -= startaddr % 16;
|
||
if (len_this_pass > (len - count))
|
||
len_this_pass = (len - count);
|
||
|
||
fprintf (adapt_stream, "db %x,%x\r", startaddr,
|
||
(startaddr - 1) + len_this_pass);
|
||
|
||
#ifdef NOTDEF /* Why do this */
|
||
expect ("\n");
|
||
/* Look for 8 hex digits. */
|
||
i = 0;
|
||
while (1)
|
||
{
|
||
if (isxdigit (readchar ()))
|
||
++i;
|
||
else
|
||
{
|
||
expect_prompt ();
|
||
error ("Hex digit expected from remote system.");
|
||
}
|
||
if (i >= 8)
|
||
break;
|
||
}
|
||
#endif /* NOTDEF */
|
||
|
||
expect (" ");
|
||
|
||
for (i = 0; i < len_this_pass; i++)
|
||
get_hex_byte (&myaddr[count++]);
|
||
|
||
expect_prompt ();
|
||
|
||
startaddr += len_this_pass;
|
||
}
|
||
return count;
|
||
}
|
||
|
||
#define MAX_BREAKS 8
|
||
static int num_brkpts=0;
|
||
static int
|
||
adapt_insert_breakpoint(addr, save)
|
||
CORE_ADDR addr;
|
||
char *save; /* Throw away, let adapt save instructions */
|
||
{
|
||
if (num_brkpts < MAX_BREAKS) {
|
||
num_brkpts++;
|
||
fprintf (adapt_stream, "B %x", addr);
|
||
fprintf (adapt_stream, "\r");
|
||
expect_prompt ();
|
||
return(0); /* Success */
|
||
} else {
|
||
fprintf_filtered(stderr,
|
||
"Too many break points, break point not installed\n");
|
||
return(1); /* Failure */
|
||
}
|
||
|
||
}
|
||
static int
|
||
adapt_remove_breakpoint(addr, save)
|
||
CORE_ADDR addr;
|
||
char *save; /* Throw away, let adapt save instructions */
|
||
{
|
||
if (num_brkpts > 0) {
|
||
num_brkpts--;
|
||
fprintf (adapt_stream, "BR %x", addr);
|
||
fprintf (adapt_stream, "\r");
|
||
fflush (adapt_stream);
|
||
expect_prompt ();
|
||
}
|
||
return(0);
|
||
}
|
||
|
||
/* Clear the adapts notion of what the break points are */
|
||
static int
|
||
adapt_clear_breakpoints()
|
||
{
|
||
if (adapt_stream) {
|
||
fprintf (adapt_stream, "BR"); /* Clear all break points */
|
||
fprintf (adapt_stream, "\r");
|
||
fflush(adapt_stream);
|
||
expect_prompt ();
|
||
}
|
||
num_brkpts = 0;
|
||
}
|
||
static void
|
||
adapt_mourn()
|
||
{
|
||
adapt_clear_breakpoints();
|
||
pop_target (); /* Pop back to no-child state */
|
||
generic_mourn_inferior ();
|
||
}
|
||
|
||
/* Display everthing we read in from the adapt until we match/see the
|
||
* specified string
|
||
*/
|
||
static int
|
||
display_until(str)
|
||
char *str;
|
||
{
|
||
int i=0,j,c;
|
||
|
||
while (c=readchar()) {
|
||
if (c==str[i]) {
|
||
i++;
|
||
if (i == strlen(str)) return;
|
||
} else {
|
||
if (i) {
|
||
for (j=0 ; j<i ; j++) /* Put everthing we matched */
|
||
putchar(str[j]);
|
||
i=0;
|
||
}
|
||
putchar(c);
|
||
}
|
||
}
|
||
|
||
}
|
||
|
||
|
||
/* Put a command string, in args, out to the adapt. The adapt is assumed to
|
||
be in raw mode, all writing/reading done through adapt_desc.
|
||
Ouput from the adapt is placed on the users terminal until the
|
||
prompt from the adapt is seen.
|
||
FIXME: Can't handle commands that take input. */
|
||
|
||
void
|
||
adapt_com (args, fromtty)
|
||
char *args;
|
||
int fromtty;
|
||
{
|
||
if (!adapt_stream) {
|
||
printf_filtered("Adapt not open. Use the 'target' command to open.\n");
|
||
return;
|
||
}
|
||
|
||
/* Clear all input so only command relative output is displayed */
|
||
slurp_input();
|
||
|
||
switch(islower(args[0]) ? toupper(args[0]) : args[0]) {
|
||
default:
|
||
printf_filtered("Unknown/Unimplemented adapt command '%s'\n",args);
|
||
break;
|
||
case 'G': /* Go, begin execution */
|
||
write(adapt_desc,args,strlen(args));
|
||
write(adapt_desc,"\r",1);
|
||
expect_prompt();
|
||
break;
|
||
case 'B': /* Break points, B or BR */
|
||
case 'C': /* Check current 29k status (running/halted) */
|
||
case 'D': /* Display data/registers */
|
||
case 'I': /* Input from i/o space */
|
||
case 'J': /* Jam an instruction */
|
||
case 'K': /* Kill, stop execution */
|
||
case 'L': /* Disassemble */
|
||
case 'O': /* Output to i/o space */
|
||
case 'T': /* Trace */
|
||
case 'P': /* Pulse an input line */
|
||
case 'X': /* Examine special purpose registers */
|
||
case 'Z': /* Display trace buffer */
|
||
write(adapt_desc,args,strlen(args));
|
||
write(adapt_desc,"\r",1);
|
||
expect(args); /* Don't display the command */
|
||
display_until("# ");
|
||
break;
|
||
/* Begin commands that take input in the form 'c x,y[,z...]' */
|
||
case 'S': /* Set memory or register */
|
||
if (strchr(args,',')) { /* Assume it is properly formatted */
|
||
write(adapt_desc,args,strlen(args));
|
||
write(adapt_desc,"\r",1);
|
||
expect_prompt();
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Define the target subroutine names */
|
||
|
||
struct target_ops adapt_ops = {
|
||
"adapt", "Remote AMD `Adapt' target",
|
||
"Remote debug an AMD 290*0 using an `Adapt' monitor via RS232",
|
||
adapt_open, adapt_close,
|
||
adapt_attach, adapt_detach, adapt_resume, adapt_wait,
|
||
adapt_fetch_register, adapt_store_register,
|
||
adapt_prepare_to_store,
|
||
adapt_xfer_inferior_memory,
|
||
adapt_files_info,
|
||
adapt_insert_breakpoint, adapt_remove_breakpoint, /* Breakpoints */
|
||
0, 0, 0, 0, 0, /* Terminal handling */
|
||
adapt_kill, /* FIXME, kill */
|
||
adapt_load,
|
||
0, /* lookup_symbol */
|
||
adapt_create_inferior, /* create_inferior */
|
||
adapt_mourn, /* mourn_inferior FIXME */
|
||
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_adapt ()
|
||
{
|
||
add_target (&adapt_ops);
|
||
add_com ("adapt <command>", class_obscure, adapt_com,
|
||
"Send a command to the AMD Adapt remote monitor.");
|
||
}
|