--- /dev/null
+/* Remote debugging interface for MONITOR boot monitor, for GDB.
+ Copyright 1990, 1991, 1992 Free Software Foundation, Inc.
+ Contributed by Cygnus Support. Written by Rob Savoye for Cygnus.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* This file was derived from remote-eb.c, which did a similar job, but for
+ an AMD-29K running EBMON. That file was in turn derived from remote.c
+ as mentioned in the following comment (left in for comic relief):
+
+ "This is like remote.c but is for an esoteric situation--
+ having a 29k board in a PC hooked up to a unix machine with
+ a serial line, and running ctty com1 on the PC, through which
+ the unix machine can run ebmon. Not to mention that the PC
+ has PC/NFS, so it can access the same executables that gdb can,
+ over the net in real time."
+
+ In reality, this module talks to a debug monitor called 'MONITOR', which
+ We communicate with MONITOR via either a direct serial line, or a TCP
+ (or possibly TELNET) stream to a terminal multiplexor,
+ which in turn talks to the target board.
+
+ This is based on remote-st2000.c. I left in the above note here for histerical
+ reasons.
+*/
+
+#include "defs.h"
+#include "gdbcore.h"
+#include "target.h"
+#include "wait.h"
+#include <varargs.h>
+#include <signal.h>
+#include <string.h>
+#include <sys/types.h>
+#include "command.h"
+#include "serial.h"
+#include "monitor.h"
+
+#ifdef HAVE_TERMIO
+# define TERMINAL struct termios
+#else
+# define TERMINAL struct sgttyb
+#endif
+
+struct monitor_ops *current_monitor;
+extern struct target_ops rom68k_ops; /* Forward declaration */
+extern struct target_ops mon68_ops; /* Forward declaration */
+extern struct target_ops bug_ops; /* Forward declaration */
+extern struct monitor_ops rom68k_cmds; /* Forward declaration */
+extern struct monitor_ops mon68_cmds; /* Forward declaration */
+extern struct monitor_ops bug_cmds; /* Forward declaration */
+extern struct cmd_list_element *setlist;
+extern struct cmd_list_element *unsetlist;
+struct cmd_list_element *showlist;
+
+static void monitor_close();
+static void monitor_fetch_register();
+static void monitor_store_register();
+static int kiodebug; /* flag set by "set remotedebug" */
+static int hashmark; /* flag set by "set hash" */
+
+#define LOG_FILE "monitor.log"
+#if defined (LOG_FILE)
+FILE *log_file;
+#endif
+
+static int timeout = 24;
+
+/* Descriptor for I/O to remote machine. Initialize it to -1 so that
+ monitor_open knows that we don't have a file open when the program
+ starts. */
+int monitor_desc = -1;
+
+/* Send data to monitor. Works just like printf. */
+
+static void
+printf_monitor(va_alist)
+ va_dcl
+{
+ va_list args;
+ char *pattern;
+ char buf[200];
+ int i;
+
+ va_start(args);
+
+ pattern = va_arg(args, char *);
+
+ vsprintf(buf, pattern, args);
+
+ if (!serial_write(buf, strlen(buf)))
+ fprintf(stderr, "serial_write failed: %s\n", safe_strerror(errno));
+}
+
+/* Read a character from the remote system, doing all the fancy
+ timeout stuff. */
+static int
+readchar(timeout)
+ int timeout;
+{
+ int c;
+
+ c = serial_readchar(timeout);
+
+ if (kiodebug)
+ putchar(c & 0x7f);
+
+#ifdef LOG_FILE
+ if (isascii (c))
+ putc(c & 0x7f, log_file);
+#endif
+
+ if (c >= 0)
+ return c & 0x7f;
+
+ if (c == -2)
+ {
+ if (timeout == 0)
+ return c; /* Polls shouldn't generate timeout errors */
+
+ error("Timeout reading from remote system.");
+ }
+
+ perror_with_name("remote-monitor");
+}
+
+/* Scan input from the remote system, until STRING is found. If DISCARD is
+ non-zero, then discard non-matching input, else print it out.
+ Let the user break out immediately. */
+static void
+expect(string, discard)
+ char *string;
+ int discard;
+{
+ char *p = string;
+ int c;
+
+ if (kiodebug)
+ printf ("Expecting \"%s\"\n", string);
+
+ immediate_quit = 1;
+ while (1)
+ {
+ c = readchar(timeout);
+ if (!isascii (c))
+ continue;
+ if (c == *p++)
+ {
+ if (*p == '\0')
+ {
+ immediate_quit = 0;
+ if (kiodebug)
+ printf ("\nMatched\n");
+ return;
+ }
+ }
+ else
+ {
+ if (!discard)
+ {
+ fwrite(string, 1, (p - 1) - string, stdout);
+ putchar((char)c);
+ fflush(stdout);
+ }
+ p = string;
+ }
+ }
+}
+
+/* Keep discarding input until we see the MONITOR prompt.
+
+ The convention for dealing with the prompt is that you
+ o give your command
+ o *then* wait for the prompt.
+
+ Thus the last thing that a procedure does with the serial line
+ will be an expect_prompt(). Exception: monitor_resume does not
+ wait for the prompt, because the terminal is being handed over
+ to the inferior. However, the next thing which happens after that
+ is a monitor_wait which does wait for the prompt.
+ Note that this includes abnormal exit, e.g. error(). This is
+ necessary to prevent getting into states from which we can't
+ recover. */
+static void
+expect_prompt(discard)
+ int discard;
+{
+#if defined (LOG_FILE)
+ /* This is a convenient place to do this. The idea is to do it often
+ enough that we never lose much data if we terminate abnormally. */
+ fflush(log_file);
+#endif
+ expect (PROMPT, discard);
+}
+
+/* Get a hex digit from the remote system & return its value.
+ If ignore_space is nonzero, ignore spaces (not newline, tab, etc). */
+static int
+get_hex_digit(ignore_space)
+ int ignore_space;
+{
+ int ch;
+ while (1)
+ {
+ ch = readchar(timeout);
+ if (ch >= '0' && ch <= '9')
+ return ch - '0';
+ else if (ch >= 'A' && ch <= 'F')
+ return ch - 'A' + 10;
+ else if (ch >= 'a' && ch <= 'f')
+ return ch - 'a' + 10;
+ else if (ch == ' ' && ignore_space)
+ ;
+ else
+ {
+ expect_prompt(1);
+ error("Invalid hex digit from remote system.");
+ }
+ }
+}
+
+/* Get a byte from monitor and put it in *BYT. Accept any number
+ leading spaces. */
+static void
+get_hex_byte (byt)
+ char *byt;
+{
+ int val;
+
+ val = get_hex_digit (1) << 4;
+ val |= get_hex_digit (0);
+ *byt = val;
+}
+
+/* Get N 32-bit words from remote, each preceded by a space,
+ and put them in registers starting at REGNO. */
+static void
+get_hex_regs (n, regno)
+ int n;
+ int regno;
+{
+ long val;
+ int i;
+
+ for (i = 0; i < n; i++)
+ {
+ int j;
+
+ val = 0;
+ for (j = 0; j < 8; j++)
+ val = (val << 4) + get_hex_digit (j == 0);
+ supply_register (regno++, (char *) &val);
+ }
+}
+
+/* This is called not only when we first attach, but also when the
+ user types "run" after having attached. */
+static void
+monitor_create_inferior (execfile, args, env)
+ char *execfile;
+ char *args;
+ char **env;
+{
+ int entry_pt;
+
+ if (args && *args)
+ error("Can't pass arguments to remote MONITOR process");
+
+ if (execfile == 0 || exec_bfd == 0)
+ error("No exec file specified");
+
+ entry_pt = (int) bfd_get_start_address (exec_bfd);
+
+#ifdef CREATE_INFERIOR_HOOK
+ CREATE_INFERIOR_HOOK (0); /* No process-ID */
+#endif
+#ifdef LOG_FILE
+ fputs ("\nIn Create_inferior()", log_file);
+#endif
+
+/* The "process" (board) is already stopped awaiting our commands, and
+ the program is already downloaded. We just set its PC and go. */
+
+ clear_proceed_status ();
+
+ /* Tell wait_for_inferior that we've started a new process. */
+ init_wait_for_inferior ();
+
+ /* Set up the "saved terminal modes" of the inferior
+ based on what modes we are starting it with. */
+ target_terminal_init ();
+
+ /* Install inferior's terminal modes. */
+ target_terminal_inferior ();
+
+ /* insert_step_breakpoint (); FIXME, do we need this? */
+ proceed ((CORE_ADDR)entry_pt, -1, 0); /* Let 'er rip... */
+}
+
+/* Open a connection to a remote debugger.
+ NAME is the filename used for communication. */
+
+static int baudrate = 9600;
+static char dev_name[100];
+
+static void
+rom68k_open(args, from_tty)
+ char *args;
+ int from_tty;
+{
+ int n;
+ char junk[100];
+ TERMINAL sg;
+
+ target_preopen(from_tty);
+
+ n = sscanf(args, " %s %d %s", dev_name, &baudrate, junk);
+
+ if (n != 2)
+ error("Bad arguments. Usage: target rom68k <device> <speed>\n\
+or target monitor <host> <port>\n");
+
+ monitor_close(0);
+
+ monitor_desc = serial_open(dev_name);
+
+ serial_setbaudrate(baudrate);
+
+ ioctl (monitor_desc, TIOCGETP, &sg);
+ sg.sg_flags = O_CRDELAY | O_NLDELAY | ~(RAW);
+ ioctl (monitor_desc, TIOCSETN, &sg);
+
+ push_target(&rom68k_ops);
+ push_monitor (&rom68k_cmds);
+
+#if defined (LOG_FILE)
+ log_file = fopen (LOG_FILE, "w");
+ if (log_file == NULL)
+ perror_with_name (LOG_FILE);
+#endif
+
+ /* Hello? Are you there? */
+ printf_monitor("\n"); /* CR wakes up monitor */
+
+ expect_prompt(1);
+
+ if (from_tty)
+ printf("Remote %s connected to %s\n", target_shortname,
+ dev_name);
+}
+
+static void
+mon68_open(args, from_tty)
+ char *args;
+ int from_tty;
+{
+ int n;
+ char junk[100];
+
+ target_preopen(from_tty);
+
+ n = sscanf(args, " %s %d %s", dev_name, &baudrate, junk);
+
+ if (n != 2)
+ error("Bad arguments. Usage: target mon68 <device> <speed>\n\
+or target monitor <host> <port>\n");
+
+ monitor_close(0);
+
+ monitor_desc = serial_open(dev_name);
+
+ serial_setbaudrate(baudrate);
+
+ push_target(&mon68_ops);
+ push_monitor (&mon68_cmds);
+
+#if defined (LOG_FILE)
+ log_file = fopen (LOG_FILE, "w");
+ if (log_file == NULL)
+ perror_with_name (LOG_FILE);
+#endif
+
+ /* Hello? Are you there? */
+ printf_monitor("\n"); /* CR wakes up dbug */
+
+ expect_prompt(1);
+
+ if (from_tty)
+ printf("Remote %s connected to %s\n", target_shortname,
+ dev_name);
+}
+
+static void
+bug_open(args, from_tty)
+ char *args;
+ int from_tty;
+{
+ int n;
+ char junk[100];
+
+ target_preopen(from_tty);
+
+ n = sscanf(args, " %s %d %s", dev_name, &baudrate, junk);
+
+ if (n != 2)
+ error("Bad arguments. Usage: target bug <device> <speed>\n\
+or target monitor <host> <port>\n");
+
+ monitor_close(0);
+
+ monitor_desc = serial_open(dev_name);
+
+ serial_setbaudrate(baudrate);
+
+ push_target(&bug_ops);
+ push_monitor (&bug_cmds);
+
+#if defined (LOG_FILE)
+ log_file = fopen (LOG_FILE, "w");
+ if (log_file == NULL)
+ perror_with_name (LOG_FILE);
+#endif
+
+ /* Hello? Are you there? */
+ printf_monitor("\r"); /* CR wakes up dbug */
+
+ expect_prompt(1);
+
+ if (from_tty)
+ printf("Remote %s connected to %s\n", target_shortname,
+ dev_name);
+}
+
+/*
+ * _close -- Close out all files and local state before this target loses control.
+ */
+static void
+monitor_close (quitting)
+ int quitting;
+{
+ serial_close();
+
+#if defined (LOG_FILE)
+ if (log_file) {
+ if (ferror(log_file))
+ fprintf(stderr, "Error writing log file.\n");
+ if (fclose(log_file) != 0)
+ fprintf(stderr, "Error closing log file.\n");
+ }
+#endif
+}
+
+/* Terminate the open connection to the remote debugger.
+ Use this when you want to detach and do something else
+ with your gdb. */
+static void
+monitor_detach (from_tty)
+ int from_tty;
+{
+ pop_target(); /* calls monitor_close to do the real work */
+ if (from_tty)
+ printf ("Ending remote %s debugging\n", target_shortname);
+}
+
+/*
+ * _resume -- Tell the remote machine to resume.
+ */
+static void
+monitor_resume (step, sig)
+ int step, sig;
+{
+#ifdef LOG_FILE
+ fprintf (log_file, "\nIn Resume (step=%d, sig=%d)\n", step, sig);
+#endif
+
+ if (step)
+ {
+ printf_monitor (STEP_CMD);
+ /* wait for the echo. */
+ expect (STEP_CMD, 1);
+ }
+ else
+ {
+ printf_monitor (GO_CMD);
+ /* swallow the echo. */
+ expect (GO_CMD, 1);
+ }
+}
+
+/*
+ * _wait -- Wait until the remote machine stops, then return,
+ * storing status in status just as `wait' would.
+ */
+
+static int
+monitor_wait (status)
+ WAITTYPE *status;
+{
+ int old_timeout = timeout;
+#ifdef LOG_FILE
+ fputs ("\nIn wait ()", log_file);
+#endif
+
+ WSETEXIT ((*status), 0);
+
+ timeout = 0; /* Don't time out -- user program is running. */
+
+ expect_prompt(0); /* Wait for prompt, outputting extraneous text */
+
+ WSETSTOP ((*status), SIGTRAP);
+
+ timeout = old_timeout;
+
+ return 0;
+}
+
+/* Return the name of register number regno in the form input and output by
+ monitor. Currently, register_names just happens to contain exactly what
+ monitor wants. Lets take advantage of that just as long as possible! */
+
+static char *
+get_reg_name (regno)
+ int regno;
+{
+ static char buf[50];
+ const char *p;
+ char *b;
+
+ b = buf;
+
+ if (regno < 0)
+ return ("");
+ for (p = reg_names[regno]; *p; p++)
+ *b++ = toupper(*p);
+ *b = '\000';
+
+ return buf;
+}
+
+/* read the remote registers into the block regs. */
+
+static void
+monitor_fetch_registers ()
+{
+ int regno;
+
+ /* yeah yeah, i know this is horribly inefficient. but it isn't done
+ very often... i'll clean it up later. */
+
+ for (regno = 0; regno <= PC_REGNUM; regno++)
+ monitor_fetch_register(regno);
+}
+
+/* Fetch register REGNO, or all registers if REGNO is -1.
+ Returns errno value. */
+static void
+monitor_fetch_register (regno)
+ int regno;
+{
+ int val, j;
+
+#ifdef LOG_FILE
+ fprintf (log_file, "\nIn Fetch Register (reg=%s)\n", get_reg_name (regno));
+ fflush (log_file);
+#endif
+
+ if (regno < 0)
+ {
+ monitor_fetch_registers ();
+ }
+ else
+ {
+ char *name = get_reg_name (regno);
+ printf_monitor (GET_REG, name);
+ expect (name, 1);
+ expect (REG_DELIM, 1);
+ if (strcasecmp (name, "SR") == 0)
+ {
+ val = 0;
+ for (j = 0; j < 4; j++)
+ val = (val << 4) + get_hex_digit (j == 0);
+ supply_register (regno, (char *) &val);
+ }
+ else
+ {
+ get_hex_regs (1, regno);
+ }
+ if (CMD_END)
+ {
+ expect (CMD_DELIM);
+ printf_monitor (CMD_END);
+ }
+ expect_prompt (1);
+ }
+ return;
+}
+
+/* Store the remote registers from the contents of the block REGS. */
+
+static void
+monitor_store_registers ()
+{
+ int regno;
+
+ for (regno = 0; regno <= PC_REGNUM; regno++)
+ monitor_store_register(regno);
+
+ registers_changed ();
+}
+
+/* Store register REGNO, or all if REGNO == 0.
+ return errno value. */
+static void
+monitor_store_register (regno)
+ int regno;
+{
+#ifdef LOG_FILE
+ fprintf (log_file, "\nIn Store_register (regno=%d)\n", regno);
+#endif
+ if (regno == -1)
+ monitor_store_registers ();
+ else
+ {
+ if (kiodebug)
+ printf ("Setting register %s to 0x%x\n", get_reg_name (regno), read_register (regno));
+
+ printf_monitor (SET_REG, get_reg_name (regno),
+ read_register (regno));
+
+ expect_prompt (1);
+ }
+}
+
+/* Get ready to modify the registers array. On machines which store
+ individual registers, this doesn't need to do anything. On machines
+ which store all the registers in one fell swoop, this makes sure
+ that registers contains all the registers from the program being
+ debugged. */
+
+static void
+monitor_prepare_to_store ()
+{
+ /* Do nothing, since we can store individual regs */
+}
+
+static void
+monitor_files_info ()
+{
+ printf ("\tAttached to %s at %d baud.\n",
+ dev_name, baudrate);
+}
+
+/* Copy LEN bytes of data from debugger memory at MYADDR
+ to inferior's memory at MEMADDR. Returns length moved. */
+static int
+monitor_write_inferior_memory (memaddr, myaddr, len)
+ CORE_ADDR memaddr;
+ unsigned char *myaddr;
+ int len;
+{
+ int i;
+ char buf[10];
+
+#ifdef LOG_FILE
+ fprintf (log_file, "\nIn Write_inferior_memory (memaddr=%x, len=%d)\n", memaddr, len);
+#endif
+ for (i = 0; i < len; i++)
+ {
+ printf_monitor (MEM_SET_CMD, memaddr + i);
+ expect (sprintf (buf, MEM_PROMPT, memaddr + i), 1);
+ expect (CMD_DELIM);
+ printf_monitor ("%x", myaddr[i]);
+ if (kiodebug)
+ printf ("\nSet 0x%x to 0x%x\n", memaddr + i, myaddr[i]);
+ if (CMD_END)
+ {
+/*** expect (sprintf (buf, MEM_PROMPT, memaddr + i +1), 1);
+ expect (CMD_DELIM); ***/
+ printf_monitor (CMD_END);
+ }
+ expect_prompt (1);
+ }
+ return len;
+}
+
+/* Read LEN bytes from inferior memory at MEMADDR. Put the result
+ at debugger address MYADDR. Returns length moved. */
+static int
+monitor_read_inferior_memory(memaddr, myaddr, len)
+ CORE_ADDR memaddr;
+ char *myaddr;
+ int len;
+{
+ int i, j;
+ char buf[20];
+
+ /* 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;
+
+#ifdef LOG_FILE
+ fprintf (log_file, "\nIn Read_inferior_memory (memaddr=%x, len=%d)\n", memaddr, len);
+#endif
+
+ /* 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
+ monitor_read_bytes (CORE_ADDR_MAX - 4, foo, 4)
+ works--it never adds len To memaddr and gets 0. */
+ /* However, something like
+ monitor_read_bytes (CORE_ADDR_MAX - 3, foo, 4)
+ doesn't need to work. Detect it and give up if there's an attempt
+ to do that. */
+ if (((memaddr - 1) + len) < memaddr) {
+ errno = EIO;
+ return 0;
+ }
+
+ startaddr = memaddr;
+ count = 0;
+ while (count < len)
+ {
+ len_this_pass = 16;
+ if ((startaddr % 16) != 0)
+ len_this_pass -= startaddr % 16;
+ if (len_this_pass > (len - count))
+ len_this_pass = (len - count);
+ if (kiodebug)
+ printf ("\nDisplay %d bytes at %x\n", len_this_pass, startaddr);
+
+ for (i = 0; i < len_this_pass; i++)
+ {
+ printf_monitor (MEM_DIS_CMD, startaddr);
+ expect (sprintf(buf, MEM_PROMPT, startaddr), 1);
+ get_hex_byte (&myaddr[count++]);
+ if (kiodebug)
+ printf ("\nRead a 0x%x from 0x%x\n", myaddr[count-1], startaddr);
+ if (CMD_END)
+ {
+ expect (CMD_DELIM);
+ printf_monitor (CMD_END);
+ }
+ expect_prompt (1);
+ startaddr += 1;
+ }
+ }
+ return len;
+}
+
+/* FIXME-someday! merge these two. */
+static int
+monitor_xfer_inferior_memory (memaddr, myaddr, len, write, target)
+ CORE_ADDR memaddr;
+ char *myaddr;
+ int len;
+ int write;
+ struct target_ops *target; /* ignored */
+{
+ if (write)
+ return monitor_write_inferior_memory (memaddr, myaddr, len);
+ else
+ return monitor_read_inferior_memory (memaddr, myaddr, len);
+}
+
+static void
+monitor_kill (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ return; /* ignore attempts to kill target system */
+}
+
+/* Clean up when a program exits.
+ The program actually lives on in the remote processor's RAM, and may be
+ run again without a download. Don't leave it full of breakpoint
+ instructions. */
+
+static void
+monitor_mourn_inferior ()
+{
+ remove_breakpoints ();
+ generic_mourn_inferior (); /* Do all the proper things now */
+}
+
+#define MAX_MONITOR_BREAKPOINTS 16
+
+extern int memory_breakpoint_size;
+static CORE_ADDR breakaddr[MAX_MONITOR_BREAKPOINTS] = {0};
+
+static int
+monitor_insert_breakpoint (addr, shadow)
+ CORE_ADDR addr;
+ char *shadow;
+{
+ int i;
+
+#ifdef LOG_FILE
+ fprintf (log_file, "\nIn Insert_breakpoint (addr=%x)\n", addr);
+#endif
+ for (i = 0; i <= MAX_MONITOR_BREAKPOINTS; i++)
+ if (breakaddr[i] == 0)
+ {
+ breakaddr[i] = addr;
+ if (kiodebug)
+ printf ("Breakpoint at %x\n", addr);
+ monitor_read_inferior_memory(addr, shadow, memory_breakpoint_size);
+ printf_monitor(SET_BREAK_CMD, addr);
+ expect_prompt(1);
+ return 0;
+ }
+
+ fprintf(stderr, "Too many breakpoints (> 16) for monitor\n");
+ return 1;
+}
+
+/*
+ * _remove_breakpoint -- Tell the monitor to remove a breakpoint
+ */
+static int
+monitor_remove_breakpoint (addr, shadow)
+ CORE_ADDR addr;
+ char *shadow;
+{
+ int i;
+
+#ifdef LOG_FILE
+ fprintf (log_file, "\nIn Remove_breakpoint (addr=%x)\n", addr);
+#endif
+ for (i = 0; i < MAX_MONITOR_BREAKPOINTS; i++)
+ if (breakaddr[i] == addr)
+ {
+ breakaddr[i] = 0;
+ /* some monitors remove breakpoints based on the address */
+ if (strcasecmp (target_shortname, "bug") == 0)
+ printf_monitor(CLR_BREAK_CMD, addr);
+ else
+ printf_monitor(CLR_BREAK_CMD, i);
+ expect_prompt(1);
+ return 0;
+ }
+
+ fprintf(stderr, "Can't find breakpoint associated with 0x%x\n", addr);
+ return 1;
+}
+
+/* Load a file. This is usually an srecord, which is ascii. No
+ protocol, just sent line by line. */
+
+#define DOWNLOAD_LINE_SIZE 100
+static void
+monitor_load (arg)
+ char *arg;
+{
+ FILE *download;
+ char buf[DOWNLOAD_LINE_SIZE];
+ int i, bytes_read;
+
+ if (kiodebug)
+ printf ("Loading %s to monitor\n", arg);
+
+ download = fopen (arg, "r");
+ if (download == NULL)
+ {
+ error (sprintf (buf, "%s Does not exist", arg));
+ return;
+ }
+
+ printf_monitor (LOAD_CMD);
+/* expect ("Waiting for S-records from host... ", 1); */
+
+ while (!feof (download))
+ {
+ bytes_read = fread (buf, sizeof (char), DOWNLOAD_LINE_SIZE, download);
+ if (hashmark)
+ {
+ putchar ('.');
+ fflush (stdout);
+ }
+
+ if (!serial_write(buf, bytes_read)) {
+ fprintf(stderr, "serial_write failed: (while downloading) %s\n", safe_strerror(errno));
+ break;
+ }
+ i = 0;
+ while (i++ <=200000) {} ; /* Ugly HACK, probably needs flow control */
+ if (bytes_read < DOWNLOAD_LINE_SIZE)
+ {
+ if (!feof (download))
+ error ("Only read %d bytes\n", bytes_read);
+ break;
+ }
+ }
+
+ if (hashmark)
+ {
+ putchar ('\n');
+ }
+ if (!feof (download))
+ error ("Never got EOF while downloading");
+ fclose (download);
+}
+
+/* Put a command string, in args, out to MONITOR. Output from MONITOR is placed
+ on the users terminal until the prompt is seen. */
+
+static void
+monitor_command (args, fromtty)
+ char *args;
+ int fromtty;
+{
+#ifdef LOG_FILE
+ fprintf (log_file, "\nIn command (args=%s)\n", args);
+#endif
+ if (monitor_desc < 0)
+ error("monitor target not open.");
+
+ if (!args)
+ error("Missing command.");
+
+ printf_monitor("%s\r", args);
+ expect_prompt(0);
+}
+
+/* Connect the user directly to MONITOR. This command acts just like the
+ 'cu' or 'tip' command. Use <CR>~. or <CR>~^D to break out. */
+
+static struct ttystate ttystate;
+
+static void
+cleanup_tty()
+{ printf("\r\n[Exiting connect mode]\r\n");
+ serial_restore(0, &ttystate);
+}
+
+static void
+connect_command (args, fromtty)
+ char *args;
+ int fromtty;
+{
+ fd_set readfds;
+ int numfds;
+ int c;
+ char cur_esc = 0;
+
+ dont_repeat();
+
+ if (monitor_desc < 0)
+ error("monitor target not open.");
+
+ if (args)
+ fprintf("This command takes no args. They have been ignored.\n");
+
+ printf("[Entering connect mode. Use ~. or ~^D to escape]\n");
+
+ serial_raw(0, &ttystate);
+
+ make_cleanup(cleanup_tty, 0);
+
+ FD_ZERO(&readfds);
+
+ while (1)
+ {
+ do
+ {
+ FD_SET(0, &readfds);
+ FD_SET(monitor_desc, &readfds);
+ numfds = select(sizeof(readfds)*8, &readfds, 0, 0, 0);
+ }
+ while (numfds == 0);
+
+ if (numfds < 0)
+ perror_with_name("select");
+
+ if (FD_ISSET(0, &readfds))
+ { /* tty input, send to monitor */
+ c = getchar();
+ if (c < 0)
+ perror_with_name("connect");
+
+ printf_monitor("%c", c);
+ switch (cur_esc)
+ {
+ case 0:
+ if (c == '\r')
+ cur_esc = c;
+ break;
+ case '\r':
+ if (c == '~')
+ cur_esc = c;
+ else
+ cur_esc = 0;
+ break;
+ case '~':
+ if (c == '.' || c == '\004')
+ return;
+ else
+ cur_esc = 0;
+ }
+ }
+
+ if (FD_ISSET(monitor_desc, &readfds))
+ {
+ while (1)
+ {
+ c = readchar(0);
+ if (c < 0)
+ break;
+ putchar(c);
+ }
+ fflush(stdout);
+ }
+ }
+}
+
+/*
+ * Define the monitor command strings. Since these are passed directly
+ * through to a printf style function, we need can include formatting
+ * strings. We also need a CR or LF on the end.
+ */
+struct monitor_ops rom68k_cmds = {
+ "go \r", /* execute or usually GO command */
+ "go \r", /* continue command */
+ "st \r", /* single step */
+ "db %x\r", /* set a breakpoint */
+ "cb %x\r", /* clear a breakpoint */
+ "pm %x\r", /* set memory to a value */
+ "pm %x\r", /* display memory */
+ "-%08X ", /* prompt memory commands use */
+ "pr %s %x\r", /* set a register */
+ ": ", /* delimiter between registers */
+ "pr %s\r", /* read a register */
+ "dc \r", /* download command */
+ "ROM68K :->", /* monitor command prompt */
+ "=", /* end-of-command delimitor */
+ ".\r" /* optional command terminator */
+};
+
+struct monitor_ops bug_cmds = {
+ "go \r", /* execute or usually GO command */
+ "go \r", /* continue command */
+ "gn \r", /* single step */
+ "br %x\r", /* set a breakpoint */
+ "nobr %x\r", /* clear a breakpoint */
+ "mm %x\r", /* set memory to a value */
+ "mm %x\r", /* display memory */
+ "%08X", /* prompt memory commands use */
+ "rs %s %x\r", /* set a register */
+ "=", /* delimiter between registers */
+ "rm %s\r", /* read a register */
+ "lo 0\r", /* download command */
+ "Bug>", /* monitor command prompt */
+ "? ", /* end-of-command delimitor */
+ ".\r" /* optional command terminator */
+};
+
+/* Define the target subroutine names */
+struct monitor_ops mon68_cmds = {
+ "", /* execute or usually GO command */
+ "", /* continue command */
+ "", /* single step */
+ "", /* set a breakpoint */
+ "", /* clear a breakpoint */
+ "", /* set memory to a value */
+ "", /* display memory */
+ "", /* set a register */
+ "", /* delimiter between registers */
+ "", /* read a register */
+ "", /* download command */
+ ">", /* monitor command prompt */
+ "", /* end-of-command delimitor */
+ "" /* optional command terminator */
+};
+
+struct target_ops rom68k_ops = {
+ "rom68k",
+ "Integrated System's ROM68K remote debug monitor",
+ "Use a remote computer running the ROM68K debug monitor, connected by a\n\
+serial line. Arguments are the name of the device for the serial line,\n\
+the speed to connect at in bits per second.",
+ rom68k_open,
+ monitor_close,
+ 0,
+ monitor_detach,
+ monitor_resume,
+ monitor_wait,
+ monitor_fetch_register,
+ monitor_store_register,
+ monitor_prepare_to_store,
+ monitor_xfer_inferior_memory,
+ monitor_files_info,
+ monitor_insert_breakpoint,
+ monitor_remove_breakpoint, /* Breakpoints */
+ 0,
+ 0,
+ 0,
+ 0,
+ 0, /* Terminal handling */
+ monitor_kill,
+ monitor_load, /* load */
+ 0, /* lookup_symbol */
+ monitor_create_inferior,
+ monitor_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 */
+};
+
+struct target_ops bug_ops = {
+ "bug",
+ "Motorola's BUG remote serial debug monitor",
+ "Use a remote computer running Motorola's BUG debug monitor, connected by a\n\
+serial line. Arguments are the name of the device for the serial line,\n\
+the speed to connect at in bits per second.",
+ bug_open,
+ monitor_close,
+ 0,
+ monitor_detach,
+ monitor_resume,
+ monitor_wait,
+ monitor_fetch_register,
+ monitor_store_register,
+ monitor_prepare_to_store,
+ monitor_xfer_inferior_memory,
+ monitor_files_info,
+ monitor_insert_breakpoint,
+ monitor_remove_breakpoint, /* Breakpoints */
+ 0,
+ 0,
+ 0,
+ 0,
+ 0, /* Terminal handling */
+ monitor_kill,
+ monitor_load, /* load */
+ 0, /* lookup_symbol */
+ monitor_create_inferior,
+ monitor_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 */
+};
+
+struct target_ops mon68_ops = {
+ "mon68",
+ "Intermetric's MON68 remote serial debug monitor",
+ "Use a remote computer running the MON68 debug monitor, connected by a\n\
+serial line. Arguments are the name of the device for the serial line,\n\
+the speed to connect at in bits per second.",
+ mon68_open,
+ monitor_close,
+ 0,
+ monitor_detach,
+ monitor_resume,
+ monitor_wait,
+ monitor_fetch_register,
+ monitor_store_register,
+ monitor_prepare_to_store,
+ monitor_xfer_inferior_memory,
+ monitor_files_info,
+ monitor_insert_breakpoint,
+ monitor_remove_breakpoint, /* Breakpoints */
+ 0,
+ 0,
+ 0,
+ 0,
+ 0, /* Terminal handling */
+ monitor_kill,
+ monitor_load, /* load */
+ 0, /* lookup_symbol */
+ monitor_create_inferior,
+ monitor_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_monitors ()
+{
+ add_show_from_set (
+ add_set_cmd ("remotedebug", no_class, var_boolean,
+ (char *)&kiodebug,
+ "Set debugging of I/O to a serial based Monitor.\n\
+When enabled, debugging info is displayed.",
+ &setlist),
+ &showlist);
+ add_show_from_set (
+ add_set_cmd ("hash", no_class, var_boolean,
+ (char *)&hashmark,
+ "Set display of activity while downloading a file.\n\
+When enabled, a period \'.\' is displayed.",
+ &setlist),
+ &showlist);
+
+ /* generic monitor command */
+ add_com ("monitor <command>", class_obscure, monitor_command,
+ "Send a command to the debug monitor.");
+ add_com ("connect", class_obscure, connect_command,
+ "Connect the terminal directly up to a serial based command monitor.\n\
+Use <CR>~. or <CR>~^D to break out.");
+
+ add_target (&rom68k_ops);
+/* add_target (&mon68_ops); */
+ add_target (&bug_ops);
+}
projects / deliverable / binutils-gdb.git / commitdiff
