/* Remote debugging interface for boot monitors, for GDB.
- Copyright 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
- Contributed by Cygnus Support. Written by Rob Savoye for Cygnus.
+ Copyright 1990-1993, 1995-1997, 1999-2000 Free Software Foundation, Inc.
+ Contributed by Cygnus Support. Written by Rob Savoye for Cygnus.
+ Resurrected from the ashes by Stu Grossman.
-This file is part of GDB.
+ 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 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.
+ 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. */
+ 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. */
/* This file was derived from various remote-* modules. It is a collection
of generic support functions so GDB can talk directly to a ROM based
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.
-*/
+ which in turn talks to the target board. */
+
+/* FIXME 32x64: This code assumes that registers and addresses are at
+ most 32 bits long. If they can be larger, you will need to declare
+ values as LONGEST and use %llx or some such to print values when
+ building commands to send to the monitor. Since we don't know of
+ any actual 64-bit targets with ROM monitors that use this code,
+ it's not an issue right now. -sts 4/18/96 */
#include "defs.h"
#include "gdbcore.h"
#include "target.h"
-#include "wait.h"
-#include <varargs.h>
+#include "gdb_wait.h"
#include <signal.h>
-#include <string.h>
+#include <ctype.h>
+#include "gdb_string.h"
#include <sys/types.h>
#include "command.h"
#include "serial.h"
#include "monitor.h"
-#include "remote-utils.h"
-
-#ifdef HAVE_TERMIO
-# define TERMINAL struct termios
-#else
-# define TERMINAL struct sgttyb
+#include "gdbcmd.h"
+#include "inferior.h"
+#include "gdb_regex.h"
+#include "dcache.h"
+#include "srec.h"
+
+static char *dev_name;
+static struct target_ops *targ_ops;
+
+static void monitor_vsprintf (char *sndbuf, char *pattern, va_list args);
+
+static int readchar (int timeout);
+
+static void monitor_fetch_register (int regno);
+static void monitor_store_register (int regno);
+
+static void monitor_printable_string (char *newstr, char *oldstr, int len);
+static void monitor_error (char *function, char *message, CORE_ADDR memaddr, int len, char *string, int final_char);
+static void monitor_detach (char *args, int from_tty);
+static void monitor_resume (int pid, int step, enum target_signal sig);
+static void monitor_interrupt (int signo);
+static void monitor_interrupt_twice (int signo);
+static void monitor_interrupt_query (void);
+static void monitor_wait_cleanup (void *old_timeout);
+
+static int monitor_wait (int pid, struct target_waitstatus *status);
+static void monitor_fetch_registers (int regno);
+static void monitor_store_registers (int regno);
+static void monitor_prepare_to_store (void);
+static int monitor_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
+ int write, struct target_ops *target);
+static void monitor_files_info (struct target_ops *ops);
+static int monitor_insert_breakpoint (CORE_ADDR addr, char *shadow);
+static int monitor_remove_breakpoint (CORE_ADDR addr, char *shadow);
+static void monitor_kill (void);
+static void monitor_load (char *file, int from_tty);
+static void monitor_mourn_inferior (void);
+static void monitor_stop (void);
+
+static int monitor_read_memory (CORE_ADDR addr, char *myaddr, int len);
+static int monitor_write_memory (CORE_ADDR addr, char *myaddr, int len);
+static int monitor_write_memory_bytes (CORE_ADDR addr, char *myaddr, int len);
+static int monitor_write_memory_block (CORE_ADDR memaddr,
+ char *myaddr, int len);
+static int monitor_expect_regexp (struct re_pattern_buffer *pat,
+ char *buf, int buflen);
+static void monitor_dump_regs (void);
+#if 0
+static int from_hex (int a);
+static unsigned long get_hex_word (void);
#endif
+static void parse_register_dump (char *, int);
-extern void make_xmodem_packet();
-extern void print_xmodem_packet();
+static struct monitor_ops *current_monitor;
-struct monitor_ops *current_monitor;
-extern struct cmd_list_element *setlist;
-extern struct cmd_list_element *unsetlist;
-struct cmd_list_element *showlist;
-extern char *version;
-extern char *host_name;
-extern char *target_name;
+static int hashmark; /* flag set by "set hash" */
-static int hashmark; /* flag set by "set hash" */
+static int timeout = 30;
-#define LOG_FILE "monitor.log"
-#if defined (LOG_FILE)
-FILE *log_file;
-#endif
+static int in_monitor_wait = 0; /* Non-zero means we are in monitor_wait() */
-static int timeout = 24;
+static void (*ofunc) (); /* Old SIGINT signal handler */
+
+static CORE_ADDR *breakaddr;
+
+/* Descriptor for I/O to remote machine. Initialize it to NULL so
+ that monitor_open knows that we don't have a file open when the
+ program starts. */
-/*
- * Descriptor for I/O to remote machine. Initialize it to NULL so that
- * monitor_open knows that we don't have a file open when the program starts.
- */
static serial_t monitor_desc = NULL;
-/* sets the download protocol, choices are srec, generic, boot */
-char *loadtype;
-static char *loadtype_str;
-static void set_loadtype_command();
-static void monitor_load_srec();
-static int monitor_write_srec();
+/* Pointer to regexp pattern matching data */
+
+static struct re_pattern_buffer register_pattern;
+static char register_fastmap[256];
+
+static struct re_pattern_buffer getmem_resp_delim_pattern;
+static char getmem_resp_delim_fastmap[256];
+
+static int dump_reg_flag; /* Non-zero means do a dump_registers cmd when
+ monitor_wait wakes up. */
+
+static DCACHE *remote_dcache;
+static int first_time = 0; /* is this the first time we're executing after
+ gaving created the child proccess? */
+
+#define TARGET_BUF_SIZE 2048
+
+/* Monitor specific debugging information. Typically only useful to
+ the developer of a new monitor interface. */
+
+static void monitor_debug (const char *fmt, ...) ATTR_FORMAT(printf, 1, 2);
+
+static int monitor_debug_p = 0;
+
+/* NOTE: This file alternates between monitor_debug_p and remote_debug
+ when determining if debug information is printed. Perhaphs this
+ could be simplified. */
-/*
- * these definitions are for xmodem protocol
- */
-#define SOH 0x01
-#define ACK 0x06
-#define NAK 0x15
-#define EOT 0x04
-#define CANCEL 0x18
-#define GETACK getacknak(ACK)
-#define GETNAK getacknak(NAK)
-#define XMODEM_DATASIZE 128 /* the data size is ALWAYS 128 */
-#define XMODEM_PACKETSIZE 131 /* the packet size is ALWAYS 132 (zero based) */
-#define XMODEM 1
-
-/*
- * set_loadtype_command -- set the type for downloading. Check to make
- * sure you have a support protocol for this target.
- */
static void
-set_loadtype_command (ignore, from_tty, c)
- char *ignore;
- int from_tty;
- struct cmd_list_element *c;
+monitor_debug (const char *fmt, ...)
{
- char *tmp;
- char *type;
- if (STREQ (LOADTYPES, "")) {
- error ("No loadtype set");
- return;
- }
-
- tmp = savestring (LOADTYPES, strlen(LOADTYPES));
- type = strtok(tmp, ",");
- if (STREQ (type, (*(char **) c->var))) {
- loadtype_str = savestring (*(char **) c->var, strlen (*(char **) c->var));
- return;
+ if (monitor_debug_p)
+ {
+ va_list args;
+ va_start (args, fmt);
+ vfprintf_filtered (gdb_stdlog, fmt, args);
+ va_end (args);
}
-
- while ((type = strtok (NULL, ",")) != (char *)NULL) {
- if (STREQ (type, (*(char **) c->var)))
- loadtype_str = savestring (*(char **) c->var, strlen (*(char **) c->var));
- return;
- }
- free (tmp);
- error ("Loadtype \"%s\" does not exist.", (*(char **) c->var));
}
-/*
- * printf_monitor -- send data to monitor. Works just like printf.
- */
+
+/* Convert a string into a printable representation, Return # byte in
+ the new string. When LEN is >0 it specifies the size of the
+ string. Otherwize strlen(oldstr) is used. */
+
static void
-printf_monitor(va_alist)
- va_dcl
+monitor_printable_string (char *newstr, char *oldstr, int len)
{
- va_list args;
- char *pattern;
- char buf[200];
+ int ch;
int i;
- va_start(args);
-
- pattern = va_arg(args, char *);
+ if (len <= 0)
+ len = strlen (oldstr);
+
+ for (i = 0; i < len; i++)
+ {
+ ch = oldstr[i];
+ switch (ch)
+ {
+ default:
+ if (isprint (ch))
+ *newstr++ = ch;
+
+ else
+ {
+ sprintf (newstr, "\\x%02x", ch & 0xff);
+ newstr += 4;
+ }
+ break;
+
+ case '\\':
+ *newstr++ = '\\';
+ *newstr++ = '\\';
+ break;
+ case '\b':
+ *newstr++ = '\\';
+ *newstr++ = 'b';
+ break;
+ case '\f':
+ *newstr++ = '\\';
+ *newstr++ = 't';
+ break;
+ case '\n':
+ *newstr++ = '\\';
+ *newstr++ = 'n';
+ break;
+ case '\r':
+ *newstr++ = '\\';
+ *newstr++ = 'r';
+ break;
+ case '\t':
+ *newstr++ = '\\';
+ *newstr++ = 't';
+ break;
+ case '\v':
+ *newstr++ = '\\';
+ *newstr++ = 'v';
+ break;
+ }
+ }
- vsprintf(buf, pattern, args);
+ *newstr++ = '\0';
+}
- debuglogs (1, "printf_monitor(), Sending: \"%s\".", buf);
+/* Print monitor errors with a string, converting the string to printable
+ representation. */
- if (SERIAL_WRITE(monitor_desc, buf, strlen(buf)))
- fprintf(stderr, "SERIAL_WRITE failed: %s\n", safe_strerror(errno));
-}
-/*
- * write_monitor -- send raw data to monitor.
- */
static void
-write_monitor(data, len)
- char data[];
- int len;
+monitor_error (char *function, char *message,
+ CORE_ADDR memaddr, int len, char *string, int final_char)
{
- if (SERIAL_WRITE(monitor_desc, data, len))
- fprintf(stderr, "SERIAL_WRITE failed: %s\n", safe_strerror(errno));
-
- *(data + len+1) = '\0';
- debuglogs (1, "write_monitor(), Sending: \"%s\".", data);
+ int real_len = (len == 0 && string != (char *) 0) ? strlen (string) : len;
+ char *safe_string = alloca ((real_len * 4) + 1);
+ monitor_printable_string (safe_string, string, real_len);
+ if (final_char)
+ error ("%s (0x%s): %s: %s%c", function, paddr_nz (memaddr), message, safe_string, final_char);
+ else
+ error ("%s (0x%s): %s: %s", function, paddr_nz (memaddr), message, safe_string);
+}
+
+/* Convert hex digit A to a number. */
+
+static int
+fromhex (int a)
+{
+ if (a >= '0' && a <= '9')
+ return a - '0';
+ else if (a >= 'a' && a <= 'f')
+ return a - 'a' + 10;
+ else if (a >= 'A' && a <= 'F')
+ return a - 'A' + 10;
+ else
+ error ("Invalid hex digit %d", a);
}
-/*
- * debuglogs -- deal with debugging info to multiple sources. This takes
- * two real args, the first one is the level to be compared against
- * the sr_get_debug() value, the second arg is a printf buffer and args
- * to be formatted and printed. A CR is added after each string is printed.
+/* monitor_vsprintf - similar to vsprintf but handles 64-bit addresses
+
+ This function exists to get around the problem that many host platforms
+ don't have a printf that can print 64-bit addresses. The %A format
+ specification is recognized as a special case, and causes the argument
+ to be printed as a 64-bit hexadecimal address.
+
+ Only format specifiers of the form "[0-9]*[a-z]" are recognized.
+ If it is a '%s' format, the argument is a string; otherwise the
+ argument is assumed to be a long integer.
+
+ %% is also turned into a single %.
*/
+
static void
-debuglogs(va_alist)
- va_dcl
+monitor_vsprintf (char *sndbuf, char *pattern, va_list args)
{
- va_list args;
- char *pattern, *p;
- char buf[200];
- char newbuf[300];
- int level, i;
-
- va_start(args);
-
- level = va_arg(args, int); /* get the debug level */
- if ((level <0) || (level > 100)) {
- error ("Bad argument passed to debuglogs(), needs debug level");
- return;
- }
-
- pattern = va_arg(args, char *); /* get the printf style pattern */
-
- vsprintf(buf, pattern, args); /* format the string */
-
- /* convert some characters so it'll look right in the log */
- p = newbuf;
- for (i=0 ; buf[i] != '\0'; i++) {
- switch (buf[i]) {
- case '\n': /* newlines */
- *p++ = '\\';
- *p++ = 'n';
- continue;
- case '\r': /* carriage returns */
- *p++ = '\\';
- *p++ = 'r';
- continue;
- case '\033': /* escape */
- *p++ = '\\';
- *p++ = 'e';
- continue;
- case '\t': /* tab */
- *p++ = '\\';
- *p++ = 't';
- continue;
- case '\b': /* backspace */
- *p++ = '\\';
- *p++ = 'b';
- continue;
- default: /* no change */
- *p++ = buf[i];
- }
-
- if (buf[i] < 26) { /* modify control characters */
- *p++ = '^';
- *p++ = buf[i] + 'A';
- continue;
- }
- }
- *p = '\0'; /* terminate the string */
-
- if (sr_get_debug() > level)
- puts (newbuf);
-
-#ifdef LOG_FILE /* write to the monitor log */
- if (log_file != 0x0) {
- fputs (newbuf, log_file);
- fputc ('\n', log_file);
- fflush (log_file);
- }
-#endif
+ char format[10];
+ char fmt;
+ char *p;
+ int i;
+ long arg_int;
+ CORE_ADDR arg_addr;
+ char *arg_string;
+
+ for (p = pattern; *p; p++)
+ {
+ if (*p == '%')
+ {
+ /* Copy the format specifier to a separate buffer. */
+ format[0] = *p++;
+ for (i = 1; *p >= '0' && *p <= '9' && i < (int) sizeof (format) - 2;
+ i++, p++)
+ format[i] = *p;
+ format[i] = fmt = *p;
+ format[i + 1] = '\0';
+
+ /* Fetch the next argument and print it. */
+ switch (fmt)
+ {
+ case '%':
+ strcpy (sndbuf, "%");
+ break;
+ case 'A':
+ arg_addr = va_arg (args, CORE_ADDR);
+ strcpy (sndbuf, paddr_nz (arg_addr));
+ break;
+ case 's':
+ arg_string = va_arg (args, char *);
+ sprintf (sndbuf, format, arg_string);
+ break;
+ default:
+ arg_int = va_arg (args, long);
+ sprintf (sndbuf, format, arg_int);
+ break;
+ }
+ sndbuf += strlen (sndbuf);
+ }
+ else
+ *sndbuf++ = *p;
+ }
+ *sndbuf = '\0';
}
-/* readchar -- read a character from the remote system, doing all the fancy
- * timeout stuff.
- */
-static int
-readchar(timeout)
- int timeout;
+
+/* monitor_printf_noecho -- Send data to monitor, but don't expect an echo.
+ Works just like printf. */
+
+void
+monitor_printf_noecho (char *pattern,...)
{
- int c;
+ va_list args;
+ char sndbuf[2000];
+ int len;
- c = SERIAL_READCHAR(monitor_desc, timeout);
+ va_start (args, pattern);
- if (sr_get_debug() > 5)
- putchar(c & 0x7f);
+ monitor_vsprintf (sndbuf, pattern, args);
-#ifdef LOG_FILE
- if (isascii (c))
- putc(c & 0x7f, log_file);
-#endif
+ len = strlen (sndbuf);
+ if (len + 1 > sizeof sndbuf)
+ abort ();
- if (c >= 0)
- return c & 0x7f;
-
- if (c == SERIAL_TIMEOUT) {
- if (timeout == 0)
- return c; /* Polls shouldn't generate timeout errors */
- error("Timeout reading from remote system.");
-#ifdef LOG_FILE
- fputs ("ERROR: Timeout reading from remote system", log_file);
-#endif
- }
- perror_with_name("remote-monitor");
+ if (monitor_debug_p)
+ {
+ char *safe_string = (char *) alloca ((strlen (sndbuf) * 4) + 1);
+ monitor_printable_string (safe_string, sndbuf, 0);
+ fprintf_unfiltered (gdb_stdlog, "sent[%s]\n", safe_string);
+ }
+
+ monitor_write (sndbuf, len);
}
-/*
- * expect -- 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;
+/* monitor_printf -- Send data to monitor and check the echo. Works just like
+ printf. */
+
+void
+monitor_printf (char *pattern,...)
{
- char *p = string;
- int c;
+ va_list args;
+ char sndbuf[2000];
+ int len;
+ va_start (args, pattern);
- debuglogs (1, "Expecting \"%s\".", string);
+ monitor_vsprintf (sndbuf, pattern, args);
- immediate_quit = 1;
- while (1) {
- c = readchar(timeout);
- if (!isascii (c))
- continue;
- if (c == *p++) {
- if (*p == '\0') {
- immediate_quit = 0;
- debuglogs (4, "Matched");
- return;
- }
- } else {
- if (!discard) {
- fwrite(string, 1, (p - 1) - string, stdout);
- putchar((char)c);
- fflush(stdout);
- }
- p = string;
+ len = strlen (sndbuf);
+ if (len + 1 > sizeof sndbuf)
+ abort ();
+
+ if (monitor_debug_p)
+ {
+ char *safe_string = (char *) alloca ((len * 4) + 1);
+ monitor_printable_string (safe_string, sndbuf, 0);
+ fprintf_unfiltered (gdb_stdlog, "sent[%s]\n", safe_string);
}
- }
+
+ monitor_write (sndbuf, len);
+
+ /* We used to expect that the next immediate output was the characters we
+ just output, but sometimes some extra junk appeared before the characters
+ we expected, like an extra prompt, or a portmaster sending telnet negotiations.
+ So, just start searching for what we sent, and skip anything unknown. */
+ monitor_debug ("ExpectEcho\n");
+ monitor_expect (sndbuf, (char *) 0, 0);
}
-/* 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.
+/* Write characters to the remote system. */
- 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;
+void
+monitor_write (char *buf, int buflen)
{
- expect (PROMPT, discard);
+ if (SERIAL_WRITE (monitor_desc, buf, buflen))
+ fprintf_unfiltered (gdb_stderr, "SERIAL_WRITE failed: %s\n",
+ safe_strerror (errno));
}
-/*
- * junk -- ignore junk characters. Returns a 1 if junk, 0 otherwise
- */
-static int
-junk(ch)
- char ch;
+
+/* Read a binary character from the remote system, doing all the fancy
+ timeout stuff, but without interpreting the character in any way,
+ and without printing remote debug information. */
+
+int
+monitor_readchar (void)
{
- switch (ch) {
- case '\0':
- case ' ':
- case '-':
- case '\t':
- case '\r':
- case '\n':
- if (sr_get_debug() > 5)
- debuglogs (5, "Ignoring \'%c\'.", ch);
- return 1;
- default:
- if (sr_get_debug() > 5)
- debuglogs (5, "Accepting \'%c\'.", ch);
- return 0;
- }
+ int c;
+ int looping;
+
+ do
+ {
+ looping = 0;
+ c = SERIAL_READCHAR (monitor_desc, timeout);
+
+ if (c >= 0)
+ c &= 0xff; /* don't lose bit 7 */
+ }
+ while (looping);
+
+ if (c >= 0)
+ return c;
+
+ if (c == SERIAL_TIMEOUT)
+ error ("Timeout reading from remote system.");
+
+ perror_with_name ("remote-monitor");
}
-/*
- * get_hex_digit -- Get a hex digit from the remote system & return its value.
- * If ignore is nonzero, ignore spaces, newline & tabs.
- */
+
+/* Read a character from the remote system, doing all the fancy
+ timeout stuff. */
+
static int
-get_hex_digit(ignore)
- int ignore;
+readchar (int timeout)
{
- static int ch;
- while (1) {
- ch = readchar(timeout);
- if (junk(ch))
- continue;
- if (sr_get_debug() > 4)
- debuglogs (4, "get_hex_digit() got a 0x%x(%c)", ch, ch);
-
- if (ch >= '0' && ch <= '9')
- return ch - '0';
- else if (ch >= 'A' && ch <= 'F')
- return ch - 'A' + 10;
- else if (ch >= 'a' && ch <= 'f')
- return ch - 'a' + 10;
- else if (ch == ' ' && ignore)
- ;
- else {
- expect_prompt(1);
- error("Invalid hex digit from remote system. (0x%x)", ch);
- }
- }
+ int c;
+ static enum
+ {
+ last_random, last_nl, last_cr, last_crnl
+ }
+ state = last_random;
+ int looping;
+
+ do
+ {
+ looping = 0;
+ c = SERIAL_READCHAR (monitor_desc, timeout);
+
+ if (c >= 0)
+ {
+ c &= 0x7f;
+ /* This seems to interfere with proper function of the
+ input stream */
+ if (monitor_debug_p || remote_debug)
+ {
+ char buf[2];
+ buf[0] = c;
+ buf[1] = '\0';
+ puts_debug ("read -->", buf, "<--");
+ }
+
+ }
+
+ /* Canonicialize \n\r combinations into one \r */
+ if ((current_monitor->flags & MO_HANDLE_NL) != 0)
+ {
+ if ((c == '\r' && state == last_nl)
+ || (c == '\n' && state == last_cr))
+ {
+ state = last_crnl;
+ looping = 1;
+ }
+ else if (c == '\r')
+ state = last_cr;
+ else if (c != '\n')
+ state = last_random;
+ else
+ {
+ state = last_nl;
+ c = '\r';
+ }
+ }
+ }
+ while (looping);
+
+ if (c >= 0)
+ return c;
+
+ if (c == SERIAL_TIMEOUT)
+#if 0
+ /* I fail to see how detaching here can be useful */
+ if (in_monitor_wait) /* Watchdog went off */
+ {
+ target_mourn_inferior ();
+ error ("GDB serial timeout has expired. Target detached.\n");
+ }
+ else
+#endif
+ error ("Timeout reading from remote system.");
+
+ perror_with_name ("remote-monitor");
}
-/* get_hex_byte -- Get a byte from monitor and put it in *BYT.
- * Accept any number leading spaces.
- */
-static void
-get_hex_byte (byt)
- char *byt;
+/* Scan input from the remote system, until STRING is found. If BUF is non-
+ zero, then collect input until we have collected either STRING or BUFLEN-1
+ chars. In either case we terminate BUF with a 0. If input overflows BUF
+ because STRING can't be found, return -1, else return number of chars in BUF
+ (minus the terminating NUL). Note that in the non-overflow case, STRING
+ will be at the end of BUF. */
+
+int
+monitor_expect (char *string, char *buf, int buflen)
{
- int val;
-
- val = get_hex_digit (1) << 4;
- debuglogs (4, "get_hex_digit() -- Read first nibble 0x%x", val);
-
- val |= get_hex_digit (0);
- debuglogs (4, "get_hex_digit() -- Read second nibble 0x%x", val);
- *byt = val;
-
- debuglogs (4, "get_hex_digit() -- Read a 0x%x", val);
+ char *p = string;
+ int obuflen = buflen;
+ int c;
+ extern struct target_ops *targ_ops;
+
+ if (monitor_debug_p)
+ {
+ char *safe_string = (char *) alloca ((strlen (string) * 4) + 1);
+ monitor_printable_string (safe_string, string, 0);
+ fprintf_unfiltered (gdb_stdlog, "MON Expecting '%s'\n", safe_string);
+ }
+
+ immediate_quit++;
+ while (1)
+ {
+ if (buf)
+ {
+ if (buflen < 2)
+ {
+ *buf = '\000';
+ immediate_quit--;
+ return -1;
+ }
+
+ c = readchar (timeout);
+ if (c == '\000')
+ continue;
+ *buf++ = c;
+ buflen--;
+ }
+ else
+ c = readchar (timeout);
+
+ /* Don't expect any ^C sent to be echoed */
+
+ if (*p == '\003' || c == *p)
+ {
+ p++;
+ if (*p == '\0')
+ {
+ immediate_quit--;
+
+ if (buf)
+ {
+ *buf++ = '\000';
+ return obuflen - buflen;
+ }
+ else
+ return 0;
+ }
+ }
+ else if ((c == '\021' || c == '\023') &&
+ (STREQ (targ_ops->to_shortname, "m32r")
+ || STREQ (targ_ops->to_shortname, "mon2000")))
+ { /* m32r monitor emits random DC1/DC3 chars */
+ continue;
+ }
+ else
+ {
+ /* We got a character that doesn't match the string. We need to
+ back up p, but how far? If we're looking for "..howdy" and the
+ monitor sends "...howdy"? There's certainly a match in there,
+ but when we receive the third ".", we won't find it if we just
+ restart the matching at the beginning of the string.
+
+ This is a Boyer-Moore kind of situation. We want to reset P to
+ the end of the longest prefix of STRING that is a suffix of
+ what we've read so far. In the example above, that would be
+ ".." --- the longest prefix of "..howdy" that is a suffix of
+ "...". This longest prefix could be the empty string, if C
+ is nowhere to be found in STRING.
+
+ If this longest prefix is not the empty string, it must contain
+ C, so let's search from the end of STRING for instances of C,
+ and see if the portion of STRING before that is a suffix of
+ what we read before C. Actually, we can search backwards from
+ p, since we know no prefix can be longer than that.
+
+ Note that we can use STRING itself, along with C, as a record
+ of what we've received so far. :) */
+ int i;
+
+ for (i = (p - string) - 1; i >= 0; i--)
+ if (string[i] == c)
+ {
+ /* Is this prefix a suffix of what we've read so far?
+ In other words, does
+ string[0 .. i-1] == string[p - i, p - 1]? */
+ if (! memcmp (string, p - i, i))
+ {
+ p = string + i + 1;
+ break;
+ }
+ }
+ if (i < 0)
+ p = string;
+ }
+ }
}
-/*
- * get_hex_word -- Get N 32-bit words from remote, each preceded by a space,
- * and put them in registers starting at REGNO.
- */
+/* Search for a regexp. */
+
static int
-get_hex_word ()
+monitor_expect_regexp (struct re_pattern_buffer *pat, char *buf, int buflen)
{
- long val;
- int i;
+ char *mybuf;
+ char *p;
+ monitor_debug ("MON Expecting regexp\n");
+ if (buf)
+ mybuf = buf;
+ else
+ {
+ mybuf = alloca (TARGET_BUF_SIZE);
+ buflen = TARGET_BUF_SIZE;
+ }
- val = 0;
- for (i = 0; i < 8; i++)
- val = (val << 4) + get_hex_digit (i == 0);
-
- debuglogs (4, "get_hex_word() got a 0x%x.", val);
+ p = mybuf;
+ while (1)
+ {
+ int retval;
- return val;
+ if (p - mybuf >= buflen)
+ { /* Buffer about to overflow */
+
+/* On overflow, we copy the upper half of the buffer to the lower half. Not
+ great, but it usually works... */
+
+ memcpy (mybuf, mybuf + buflen / 2, buflen / 2);
+ p = mybuf + buflen / 2;
+ }
+
+ *p++ = readchar (timeout);
+
+ retval = re_search (pat, mybuf, p - mybuf, 0, p - mybuf, NULL);
+ if (retval >= 0)
+ return 1;
+ }
}
-/* This is called not only when we first attach, but also when the
- user types "run" after having attached. */
-void
-monitor_create_inferior (execfile, args, env)
- char *execfile;
- char *args;
- char **env;
+/* 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 monitor_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. */
+
+int
+monitor_expect_prompt (char *buf, int buflen)
{
- int entry_pt;
+ monitor_debug ("MON Expecting prompt\n");
+ return monitor_expect (current_monitor->prompt, buf, buflen);
+}
- if (args && *args)
- error("Can't pass arguments to remote MONITOR process");
+/* Get N 32-bit words from remote, each preceded by a space, and put
+ them in registers starting at REGNO. */
- if (execfile == 0 || exec_bfd == 0)
- error("No exec file specified");
+#if 0
+static unsigned long
+get_hex_word (void)
+{
+ unsigned long val;
+ int i;
+ int ch;
- entry_pt = (int) bfd_get_start_address (exec_bfd);
+ do
+ ch = readchar (timeout);
+ while (isspace (ch));
- debuglogs (1, "create_inferior(exexfile=%s, args=%s, env=%s)", execfile, args, env);
+ val = from_hex (ch);
-/* The "process" (board) is already stopped awaiting our commands, and
- the program is already downloaded. We just set its PC and go. */
+ for (i = 7; i >= 1; i--)
+ {
+ ch = readchar (timeout);
+ if (!isxdigit (ch))
+ break;
+ val = (val << 4) | from_hex (ch);
+ }
- clear_proceed_status ();
+ return val;
+}
+#endif
- /* Tell wait_for_inferior that we've started a new process. */
- init_wait_for_inferior ();
+static void
+compile_pattern (char *pattern, struct re_pattern_buffer *compiled_pattern,
+ char *fastmap)
+{
+ int tmp;
+ const char *val;
- /* Set up the "saved terminal modes" of the inferior
- based on what modes we are starting it with. */
- target_terminal_init ();
+ compiled_pattern->fastmap = fastmap;
- /* Install inferior's terminal modes. */
- target_terminal_inferior ();
+ tmp = re_set_syntax (RE_SYNTAX_EMACS);
+ val = re_compile_pattern (pattern,
+ strlen (pattern),
+ compiled_pattern);
+ re_set_syntax (tmp);
- /* insert_step_breakpoint (); FIXME, do we need this? */
+ if (val)
+ error ("compile_pattern: Can't compile pattern string `%s': %s!", pattern, val);
- /* Let 'er rip... */
- proceed ((CORE_ADDR)entry_pt, TARGET_SIGNAL_DEFAULT, 0);
+ if (fastmap)
+ re_compile_fastmap (compiled_pattern);
}
-/*
- * monitor_open -- open a connection to a remote debugger.
- * NAME is the filename used for communication.
- */
-static int baudrate = 9600;
-static char dev_name[100];
+/* Open a connection to a remote debugger. NAME is the filename used
+ for communication. */
void
-monitor_open(args, name, from_tty)
- char *args;
- char *name;
- int from_tty;
+monitor_open (char *args, struct monitor_ops *mon_ops, int from_tty)
{
+ char *name;
+ char **p;
- if (args == NULL)
+ if (mon_ops->magic != MONITOR_OPS_MAGIC)
+ error ("Magic number of monitor_ops struct wrong.");
+
+ targ_ops = mon_ops->target;
+ name = targ_ops->to_shortname;
+
+ if (!args)
error ("Use `target %s DEVICE-NAME' to use a serial port, or \n\
`target %s HOST-NAME:PORT-NUMBER' to use a network connection.", name, name);
-/* if (is_open) */
- monitor_close(0);
+ target_preopen (from_tty);
- strcpy(dev_name, args);
- monitor_desc = SERIAL_OPEN(dev_name);
+ /* Setup pattern for register dump */
- if (monitor_desc == NULL)
- perror_with_name(dev_name);
-
- if (baud_rate != -1) {
- if (SERIAL_SETBAUDRATE (monitor_desc, baud_rate)) {
- SERIAL_CLOSE (monitor_desc);
- perror_with_name (name);
- }
- }
-
- SERIAL_RAW(monitor_desc);
-
-#if defined (LOG_FILE)
- log_file = fopen (LOG_FILE, "w");
- if (log_file == NULL)
- perror_with_name (LOG_FILE);
- fprintf_filtered (log_file, "GDB %s (%s", version, host_name);
- fprintf_filtered (log_file, " --target %s)\n", target_name);
- fprintf_filtered (log_file, "Remote target %s connected to %s\n\n", TARGET_NAME, dev_name);
-#endif
+ if (mon_ops->register_pattern)
+ compile_pattern (mon_ops->register_pattern, ®ister_pattern,
+ register_fastmap);
- /* wake up the monitor and see if it's alive */
- printf_monitor(INIT_CMD);
- expect_prompt(1); /* See if we get a prompt */
+ if (mon_ops->getmem.resp_delim)
+ compile_pattern (mon_ops->getmem.resp_delim, &getmem_resp_delim_pattern,
+ getmem_resp_delim_fastmap);
- /* try again to be sure */
- printf_monitor(INIT_CMD);
- expect_prompt(1); /* See if we get a prompt */
+ unpush_target (targ_ops);
- if (from_tty)
- printf("Remote target %s connected to %s\n", TARGET_NAME, dev_name);
-}
+ if (dev_name)
+ free (dev_name);
+ dev_name = strsave (args);
-/*
- * monitor_close -- Close out all files and local state before this
- * target loses control.
- */
+ monitor_desc = SERIAL_OPEN (dev_name);
-void
-monitor_close (quitting)
- int quitting;
-{
- SERIAL_CLOSE(monitor_desc);
- monitor_desc = NULL;
+ if (!monitor_desc)
+ perror_with_name (dev_name);
- debuglogs (1, "monitor_close (quitting=%d)", quitting);
+ if (baud_rate != -1)
+ {
+ if (SERIAL_SETBAUDRATE (monitor_desc, baud_rate))
+ {
+ SERIAL_CLOSE (monitor_desc);
+ perror_with_name (dev_name);
+ }
+ }
-#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
-}
+ SERIAL_RAW (monitor_desc);
-/*
- * monitor_detach -- terminate the open connection to the remote
- * debugger. Use this when you want to detach and do something
- * else with your gdb.
- */
-void
-monitor_detach (from_tty)
- int from_tty;
-{
+ SERIAL_FLUSH_INPUT (monitor_desc);
- debuglogs (1, "monitor_detach ()");
+ /* some systems only work with 2 stop bits */
- pop_target(); /* calls monitor_close to do the real work */
- if (from_tty)
- printf ("Ending remote %s debugging\n", target_shortname);
-}
+ SERIAL_SETSTOPBITS (monitor_desc, mon_ops->stopbits);
-/*
- * monitor_attach -- attach GDB to the target.
- */
-void
-monitor_attach (args, from_tty)
- char *args;
- int from_tty;
-{
- if (from_tty)
- printf ("Starting remote %s debugging\n", target_shortname);
-
- debuglogs (1, "monitor_attach (args=%s)", args);
-
- printf_monitor (GO_CMD);
- /* swallow the echo. */
- expect (GO_CMD, 1);
-}
-
-/*
- * monitor_resume -- Tell the remote machine to resume.
- */
-void
-monitor_resume (pid, step, sig)
- int pid, step;
- enum target_signal sig;
-{
- debuglogs (1, "monitor_resume (step=%d, sig=%d)", step, sig);
+ current_monitor = mon_ops;
- if (step) {
- printf_monitor (STEP_CMD);
- } else {
- printf_monitor (CONT_CMD);
- }
-}
+ /* See if we can wake up the monitor. First, try sending a stop sequence,
+ then send the init strings. Last, remove all breakpoints. */
-/*
- * monitor_wait -- Wait until the remote machine stops, then return,
- * storing status in status just as `wait' would.
- */
-int
-monitor_wait (pid, status)
- int pid;
- struct target_waitstatus *status;
-{
- int old_timeout = timeout;
+ if (current_monitor->stop)
+ {
+ monitor_stop ();
+ if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0)
+ {
+ monitor_debug ("EXP Open echo\n");
+ monitor_expect_prompt (NULL, 0);
+ }
+ }
- debuglogs(1, "monitor_wait (), printing extraneous text.");
-
- status->kind = TARGET_WAITKIND_EXITED;
- status->value.integer = 0;
+ /* wake up the monitor and see if it's alive */
+ for (p = mon_ops->init; *p != NULL; p++)
+ {
+ /* Some of the characters we send may not be echoed,
+ but we hope to get a prompt at the end of it all. */
- timeout = 0; /* Don't time out -- user program is running. */
+ if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0)
+ monitor_printf (*p);
+ else
+ monitor_printf_noecho (*p);
+ monitor_expect_prompt (NULL, 0);
+ }
- expect_prompt(0); /* Wait for prompt, outputting extraneous text */
- debuglogs (4, "monitor_wait(), got the prompt.");
+ SERIAL_FLUSH_INPUT (monitor_desc);
- status->kind = TARGET_WAITKIND_STOPPED;
- status->value.sig = TARGET_SIGNAL_TRAP;
+ /* Alloc breakpoints */
+ if (mon_ops->set_break != NULL)
+ {
+ if (mon_ops->num_breakpoints == 0)
+ mon_ops->num_breakpoints = 8;
- timeout = old_timeout;
+ breakaddr = (CORE_ADDR *) xmalloc (mon_ops->num_breakpoints * sizeof (CORE_ADDR));
+ memset (breakaddr, 0, mon_ops->num_breakpoints * sizeof (CORE_ADDR));
+ }
- return 0;
-}
+ /* Remove all breakpoints */
-/* 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! */
+ if (mon_ops->clr_all_break)
+ {
+ monitor_printf (mon_ops->clr_all_break);
+ monitor_expect_prompt (NULL, 0);
+ }
-static char *
-get_reg_name (regno)
- int regno;
-{
- static char buf[50];
- const char *p;
- char *b;
+ if (from_tty)
+ printf_unfiltered ("Remote target %s connected to %s\n", name, dev_name);
- b = buf;
+ push_target (targ_ops);
- if (regno < 0)
- return ("");
+ inferior_pid = 42000; /* Make run command think we are busy... */
- for (p = REGNAMES(regno); *p; p++)
- *b++ = tolower(*p);
+ /* Give monitor_wait something to read */
- *b = '\000';
+ monitor_printf (current_monitor->line_term);
- debuglogs (5, "Got name \"%s\" from regno #%d.", buf, regno);
+ if (remote_dcache)
+ dcache_free (remote_dcache);
+
+ if (current_monitor->flags & MO_HAS_BLOCKWRITES)
+ remote_dcache = dcache_init (monitor_read_memory,
+ monitor_write_memory_block);
+ else
+ remote_dcache = dcache_init (monitor_read_memory, monitor_write_memory);
- return buf;
+ start_remote ();
}
-/*
- * monitor_fetch_registers -- read the remote registers into the
- * block regs.
- */
+/* Close out all files and local state before this target loses
+ control. */
+
void
-monitor_fetch_registers ()
+monitor_close (int quitting)
{
- int regno;
-
- /* yeah yeah, i know this is horribly inefficient. but it isn't done
- very often... i'll clean it up later. */
+ if (monitor_desc)
+ SERIAL_CLOSE (monitor_desc);
+
+ /* Free breakpoint memory */
+ if (breakaddr != NULL)
+ {
+ free (breakaddr);
+ breakaddr = NULL;
+ }
- for (regno = 0; regno <= PC_REGNUM; regno++)
- monitor_fetch_register(regno);
+ monitor_desc = NULL;
}
-/*
- * monitor_fetch_register -- fetch register REGNO, or all registers if REGNO
- * is -1. Returns errno value.
- */
-void
-monitor_fetch_register (regno)
- int regno;
-{
- int val, j;
-
- debuglogs (1, "monitor_fetch_register (reg=%s)", get_reg_name (regno));
+/* Terminate the open connection to the remote debugger. Use this
+ when you want to detach and do something else with your gdb. */
- if (regno < 0) {
- monitor_fetch_registers ();
- } else {
- char *name = get_reg_name (regno);
- if (STREQ(name, ""))
- return;
- printf_monitor (ROMCMD(GET_REG), name); /* send the command */
- expect (name, 1); /* then strip the leading garbage */
- if (*ROMDELIM(GET_REG) != 0) { /* if there's a delimiter */
- expect (ROMDELIM(GET_REG), 1);
- }
-
- val = get_hex_word(); /* get the value, ignore junk */
- supply_register (regno, (char *) &val);
-
- if (*ROMDELIM(GET_REG) != 0) {
-/*** expect (ROMRES(GET_REG)); ***/
- printf_monitor (CMD_END);
- }
- expect_prompt (1);
- }
- return;
+static void
+monitor_detach (char *args, int from_tty)
+{
+ pop_target (); /* calls monitor_close to do the real work */
+ if (from_tty)
+ printf_unfiltered ("Ending remote %s debugging\n", target_shortname);
}
-/* Store the remote registers from the contents of the block REGS. */
+/* Convert VALSTR into the target byte-ordered value of REGNO and store it. */
-void
-monitor_store_registers ()
+char *
+monitor_supply_register (int regno, char *valstr)
{
- int regno;
+ ULONGEST val;
+ unsigned char regbuf[MAX_REGISTER_RAW_SIZE];
+ char *p;
+
+ val = 0;
+ p = valstr;
+ while (p && *p != '\0')
+ {
+ if (*p == '\r' || *p == '\n')
+ {
+ while (*p != '\0')
+ p++;
+ break;
+ }
+ if (isspace (*p))
+ {
+ p++;
+ continue;
+ }
+ if (!isxdigit (*p) && *p != 'x')
+ {
+ break;
+ }
+
+ val <<= 4;
+ val += fromhex (*p++);
+ }
+ monitor_debug ("Supplying Register %d %s\n", regno, valstr);
+
+ if (*p != '\0')
+ error ("monitor_supply_register (%d): bad value from monitor: %s.",
+ regno, valstr);
+
+ /* supply register stores in target byte order, so swap here */
- debuglogs (1, "monitor_store_registers()");
+ store_unsigned_integer (regbuf, REGISTER_RAW_SIZE (regno), val);
- for (regno = 0; regno <= PC_REGNUM; regno++)
- monitor_store_register(regno);
+ supply_register (regno, regbuf);
- registers_changed ();
+ return p;
}
-/*
- * monitor_store_register -- store register REGNO, or all if REGNO == 0.
- * return errno value.
- */
+/* Tell the remote machine to resume. */
+
void
-monitor_store_register (regno)
- int regno;
+flush_monitor_dcache (void)
{
- char *name;
- int i;
-
- i = read_register(regno);
-
- debuglogs (1, "monitor_store_register (regno=%d)", regno);
+ dcache_invd (remote_dcache);
+}
- if (regno < 0)
- monitor_store_registers ();
- else {
- debuglogs (3, "Setting register %s to 0x%x", get_reg_name (regno), read_register (regno));
-
- name = get_reg_name (regno);
- if (STREQ(name, ""))
+static void
+monitor_resume (int pid, int step, enum target_signal sig)
+{
+ /* Some monitors require a different command when starting a program */
+ monitor_debug ("MON resume\n");
+ if (current_monitor->flags & MO_RUN_FIRST_TIME && first_time == 1)
+ {
+ first_time = 0;
+ monitor_printf ("run\r");
+ if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT)
+ dump_reg_flag = 1;
return;
- printf_monitor (ROMCMD(SET_REG), name, read_register(regno));
- expect (name, 1); /* strip the leading garbage */
- if (*ROMDELIM(SET_REG) != 0) { /* if there's a delimiter */
- expect (ROMDELIM(SET_REG), 1);
- get_hex_word(1);
- printf_monitor ("%d%s\n", i, CMD_END);
- }
- expect_prompt (1);
- }
- return;
-
-#if 0
- printf_monitor (SET_REG, get_reg_name (regno),
- read_register (regno));
- expect_prompt (1);
}
-#endif
-}
+ dcache_invd (remote_dcache);
+ if (step)
+ monitor_printf (current_monitor->step);
+ else
+ {
+ if (current_monitor->continue_hook)
+ (*current_monitor->continue_hook) ();
+ else
+ monitor_printf (current_monitor->cont);
+ if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT)
+ dump_reg_flag = 1;
+ }
+}
+
+/* Parse the output of a register dump command. A monitor specific
+ regexp is used to extract individual register descriptions of the
+ form REG=VAL. Each description is split up into a name and a value
+ string which are passed down to monitor specific code. */
+
+static void
+parse_register_dump (char *buf, int len)
+{
+ monitor_debug ("MON Parsing register dump\n");
+ while (1)
+ {
+ int regnamelen, vallen;
+ char *regname, *val;
+ /* Element 0 points to start of register name, and element 1
+ points to the start of the register value. */
+ struct re_registers register_strings;
+
+ memset (®ister_strings, 0, sizeof (struct re_registers));
+
+ if (re_search (®ister_pattern, buf, len, 0, len,
+ ®ister_strings) == -1)
+ break;
+
+ regnamelen = register_strings.end[1] - register_strings.start[1];
+ regname = buf + register_strings.start[1];
+ vallen = register_strings.end[2] - register_strings.start[2];
+ val = buf + register_strings.start[2];
+
+ current_monitor->supply_register (regname, regnamelen, val, vallen);
+
+ buf += register_strings.end[0];
+ len -= register_strings.end[0];
+ }
+}
+
+/* Send ^C to target to halt it. Target will respond, and send us a
+ packet. */
+
+static void
+monitor_interrupt (int signo)
+{
+ /* If this doesn't work, try more severe steps. */
+ signal (signo, monitor_interrupt_twice);
+
+ if (monitor_debug_p || remote_debug)
+ fprintf_unfiltered (gdb_stdlog, "monitor_interrupt called\n");
+
+ target_stop ();
+}
+
+/* The user typed ^C twice. */
+
+static void
+monitor_interrupt_twice (int signo)
+{
+ signal (signo, ofunc);
+
+ monitor_interrupt_query ();
+
+ signal (signo, monitor_interrupt);
+}
+
+/* Ask the user what to do when an interrupt is received. */
+
+static void
+monitor_interrupt_query (void)
+{
+ target_terminal_ours ();
+
+ if (query ("Interrupted while waiting for the program.\n\
+Give up (and stop debugging it)? "))
+ {
+ target_mourn_inferior ();
+ return_to_top_level (RETURN_QUIT);
+ }
+
+ target_terminal_inferior ();
+}
+
+static void
+monitor_wait_cleanup (void *old_timeout)
+{
+ timeout = *(int *) old_timeout;
+ signal (SIGINT, ofunc);
+ in_monitor_wait = 0;
+}
+
+
+
+void
+monitor_wait_filter (char *buf,
+ int bufmax,
+ int *ext_resp_len,
+ struct target_waitstatus *status
+)
+{
+ int resp_len;
+ do
+ {
+ resp_len = monitor_expect_prompt (buf, bufmax);
+ *ext_resp_len = resp_len;
+
+ if (resp_len <= 0)
+ fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf);
+ }
+ while (resp_len < 0);
+
+ /* Print any output characters that were preceded by ^O. */
+ /* FIXME - This would be great as a user settabgle flag */
+ if (monitor_debug_p || remote_debug
+ || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT)
+ {
+ int i;
+
+ for (i = 0; i < resp_len - 1; i++)
+ if (buf[i] == 0x0f)
+ putchar_unfiltered (buf[++i]);
+ }
+}
+
+
+
+/* Wait until the remote machine stops, then return, storing status in
+ status just as `wait' would. */
+
+static int
+monitor_wait (int pid, struct target_waitstatus *status)
+{
+ int old_timeout = timeout;
+ char buf[TARGET_BUF_SIZE];
+ int resp_len;
+ struct cleanup *old_chain;
+
+ status->kind = TARGET_WAITKIND_EXITED;
+ status->value.integer = 0;
+
+ old_chain = make_cleanup (monitor_wait_cleanup, &old_timeout);
+ monitor_debug ("MON wait\n");
+
+#if 0
+ /* This is somthing other than a maintenance command */
+ in_monitor_wait = 1;
+ timeout = watchdog > 0 ? watchdog : -1;
+#else
+ timeout = -1; /* Don't time out -- user program is running. */
+#endif
+
+ ofunc = (void (*)()) signal (SIGINT, monitor_interrupt);
+
+ if (current_monitor->wait_filter)
+ (*current_monitor->wait_filter) (buf, sizeof (buf), &resp_len, status);
+ else
+ monitor_wait_filter (buf, sizeof (buf), &resp_len, status);
+
+#if 0 /* Transferred to monitor wait filter */
+ do
+ {
+ resp_len = monitor_expect_prompt (buf, sizeof (buf));
+
+ if (resp_len <= 0)
+ fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf);
+ }
+ while (resp_len < 0);
+
+ /* Print any output characters that were preceded by ^O. */
+ /* FIXME - This would be great as a user settabgle flag */
+ if (monitor_debug_p || remote_debug
+ || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT)
+ {
+ int i;
+
+ for (i = 0; i < resp_len - 1; i++)
+ if (buf[i] == 0x0f)
+ putchar_unfiltered (buf[++i]);
+ }
+#endif
+
+ signal (SIGINT, ofunc);
+
+ timeout = old_timeout;
+#if 0
+ if (dump_reg_flag && current_monitor->dump_registers)
+ {
+ dump_reg_flag = 0;
+ monitor_printf (current_monitor->dump_registers);
+ resp_len = monitor_expect_prompt (buf, sizeof (buf));
+ }
+
+ if (current_monitor->register_pattern)
+ parse_register_dump (buf, resp_len);
+#else
+ monitor_debug ("Wait fetching registers after stop\n");
+ monitor_dump_regs ();
+#endif
+
+ status->kind = TARGET_WAITKIND_STOPPED;
+ status->value.sig = TARGET_SIGNAL_TRAP;
+
+ discard_cleanups (old_chain);
+
+ in_monitor_wait = 0;
+
+ return inferior_pid;
+}
+
+/* Fetch register REGNO, or all registers if REGNO is -1. Returns
+ errno value. */
+
+static void
+monitor_fetch_register (int regno)
+{
+ char *name;
+ char *zerobuf;
+ char *regbuf;
+ int i;
+
+ regbuf = alloca (MAX_REGISTER_RAW_SIZE * 2 + 1);
+ zerobuf = alloca (MAX_REGISTER_RAW_SIZE);
+ memset (zerobuf, 0, MAX_REGISTER_RAW_SIZE);
+
+ name = current_monitor->regnames[regno];
+ monitor_debug ("MON fetchreg %d '%s'\n", regno, name ? name : "(null name)");
+
+ if (!name || (*name == '\0'))
+ {
+ monitor_debug ("No register known for %d\n", regno);
+ supply_register (regno, zerobuf);
+ return;
+ }
+
+ /* send the register examine command */
+
+ monitor_printf (current_monitor->getreg.cmd, name);
+
+ /* If RESP_DELIM is specified, we search for that as a leading
+ delimiter for the register value. Otherwise, we just start
+ searching from the start of the buf. */
+
+ if (current_monitor->getreg.resp_delim)
+ {
+ monitor_debug ("EXP getreg.resp_delim\n");
+ monitor_expect (current_monitor->getreg.resp_delim, NULL, 0);
+ /* Handle case of first 32 registers listed in pairs. */
+ if (current_monitor->flags & MO_32_REGS_PAIRED
+ && (regno & 1) != 0 && regno < 32)
+ {
+ monitor_debug ("EXP getreg.resp_delim\n");
+ monitor_expect (current_monitor->getreg.resp_delim, NULL, 0);
+ }
+ }
+
+ /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set */
+ if (current_monitor->flags & MO_HEX_PREFIX)
+ {
+ int c;
+ c = readchar (timeout);
+ while (c == ' ')
+ c = readchar (timeout);
+ if ((c == '0') && ((c = readchar (timeout)) == 'x'))
+ ;
+ else
+ error ("Bad value returned from monitor while fetching register %x.",
+ regno);
+ }
+
+ /* Read upto the maximum number of hex digits for this register, skipping
+ spaces, but stop reading if something else is seen. Some monitors
+ like to drop leading zeros. */
+
+ for (i = 0; i < REGISTER_RAW_SIZE (regno) * 2; i++)
+ {
+ int c;
+ c = readchar (timeout);
+ while (c == ' ')
+ c = readchar (timeout);
+
+ if (!isxdigit (c))
+ break;
+
+ regbuf[i] = c;
+ }
+
+ regbuf[i] = '\000'; /* terminate the number */
+ monitor_debug ("REGVAL '%s'\n", regbuf);
+
+ /* If TERM is present, we wait for that to show up. Also, (if TERM
+ is present), we will send TERM_CMD if that is present. In any
+ case, we collect all of the output into buf, and then wait for
+ the normal prompt. */
+
+ if (current_monitor->getreg.term)
+ {
+ monitor_debug ("EXP getreg.term\n");
+ monitor_expect (current_monitor->getreg.term, NULL, 0); /* get response */
+ }
+
+ if (current_monitor->getreg.term_cmd)
+ {
+ monitor_debug ("EMIT getreg.term.cmd\n");
+ monitor_printf (current_monitor->getreg.term_cmd);
+ }
+ if (!current_monitor->getreg.term || /* Already expected or */
+ current_monitor->getreg.term_cmd) /* ack expected */
+ monitor_expect_prompt (NULL, 0); /* get response */
+
+ monitor_supply_register (regno, regbuf);
+}
+
+/* Sometimes, it takes several commands to dump the registers */
+/* This is a primitive for use by variations of monitor interfaces in
+ case they need to compose the operation.
+ */
+int
+monitor_dump_reg_block (char *block_cmd)
+{
+ char buf[TARGET_BUF_SIZE];
+ int resp_len;
+ monitor_printf (block_cmd);
+ resp_len = monitor_expect_prompt (buf, sizeof (buf));
+ parse_register_dump (buf, resp_len);
+ return 1;
+}
+
+
+/* Read the remote registers into the block regs. */
+/* Call the specific function if it has been provided */
+
+static void
+monitor_dump_regs (void)
+{
+ char buf[TARGET_BUF_SIZE];
+ int resp_len;
+ if (current_monitor->dumpregs)
+ (*(current_monitor->dumpregs)) (); /* call supplied function */
+ else if (current_monitor->dump_registers) /* default version */
+ {
+ monitor_printf (current_monitor->dump_registers);
+ resp_len = monitor_expect_prompt (buf, sizeof (buf));
+ parse_register_dump (buf, resp_len);
+ }
+ else
+ abort (); /* Need some way to read registers */
+}
+
+static void
+monitor_fetch_registers (int regno)
+{
+ monitor_debug ("MON fetchregs\n");
+ if (current_monitor->getreg.cmd)
+ {
+ if (regno >= 0)
+ {
+ monitor_fetch_register (regno);
+ return;
+ }
+
+ for (regno = 0; regno < NUM_REGS; regno++)
+ monitor_fetch_register (regno);
+ }
+ else
+ {
+ monitor_dump_regs ();
+ }
+}
+
+/* Store register REGNO, or all if REGNO == 0. Return errno value. */
+
+static void
+monitor_store_register (int regno)
+{
+ char *name;
+ ULONGEST val;
+
+ name = current_monitor->regnames[regno];
+ if (!name || (*name == '\0'))
+ {
+ monitor_debug ("MON Cannot store unknown register\n");
+ return;
+ }
+
+ val = read_register (regno);
+ monitor_debug ("MON storeg %d %s\n", regno,
+ phex (val, REGISTER_RAW_SIZE (regno)));
+
+ /* send the register deposit command */
+
+ if (current_monitor->flags & MO_REGISTER_VALUE_FIRST)
+ monitor_printf (current_monitor->setreg.cmd, val, name);
+ else if (current_monitor->flags & MO_SETREG_INTERACTIVE)
+ monitor_printf (current_monitor->setreg.cmd, name);
+ else
+ monitor_printf (current_monitor->setreg.cmd, name, val);
+
+ if (current_monitor->setreg.term)
+ {
+ monitor_debug ("EXP setreg.term\n");
+ monitor_expect (current_monitor->setreg.term, NULL, 0);
+ if (current_monitor->flags & MO_SETREG_INTERACTIVE)
+ monitor_printf ("%s\r", paddr_nz (val));
+ monitor_expect_prompt (NULL, 0);
+ }
+ else
+ monitor_expect_prompt (NULL, 0);
+ if (current_monitor->setreg.term_cmd) /* Mode exit required */
+ {
+ monitor_debug ("EXP setreg_termcmd\n");
+ monitor_printf ("%s", current_monitor->setreg.term_cmd);
+ monitor_expect_prompt (NULL, 0);
+ }
+} /* monitor_store_register */
+
+/* Store the remote registers. */
+
+static void
+monitor_store_registers (int regno)
+{
+ if (regno >= 0)
+ {
+ monitor_store_register (regno);
+ return;
+ }
+
+ for (regno = 0; regno < NUM_REGS; regno++)
+ monitor_store_register (regno);
+}
/* Get ready to modify the registers array. On machines which store
individual registers, this doesn't need to do anything. On machines
that registers contains all the registers from the program being
debugged. */
-void
-monitor_prepare_to_store ()
+static void
+monitor_prepare_to_store (void)
{
/* Do nothing, since we can store individual regs */
}
-void
-monitor_files_info ()
+static void
+monitor_files_info (struct target_ops *ops)
{
- printf ("\tAttached to %s at %d baud.\n",
- dev_name, baudrate);
+ printf_unfiltered ("\tAttached to %s at %d baud.\n", dev_name, baud_rate);
}
-/*
- * monitor_write_inferior_memory -- Copy LEN bytes of data from debugger
- * memory at MYADDR to inferior's memory at MEMADDR. Returns length moved.
- */
-int
-monitor_write_inferior_memory (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- unsigned char *myaddr;
- int len;
+static int
+monitor_write_memory (CORE_ADDR memaddr, char *myaddr, int len)
{
+ unsigned int val, hostval;
+ char *cmd;
int i;
- char buf[10];
-
- debuglogs (1, "monitor_write_inferior_memory (memaddr=0x%x, myaddr=0x%x, len=%d)", memaddr, myaddr, len);
-
- for (i = 0; i < len; i++) {
- printf_monitor (ROMCMD(SET_MEM), memaddr + i, myaddr[i] );
- if (*ROMDELIM(SET_MEM) != 0) { /* if there's a delimiter */
- expect (ROMDELIM(SET_MEM), 1);
- expect (CMD_DELIM);
- printf_monitor ("%x", myaddr[i]);
- }
-/*** printf_monitor ("%x", myaddr[i]); ***/
- if (sr_get_debug() > 1)
- printf ("\nSet 0x%x to 0x%x\n", memaddr + i, myaddr[i]);
- if (*ROMDELIM(SET_MEM) != 0) {
- expect (CMD_DELIM);
- printf_monitor (CMD_END);
- }
- expect_prompt (1);
- }
+
+ monitor_debug ("MON write %d %s\n", len, paddr (memaddr));
+
+ if (current_monitor->flags & MO_ADDR_BITS_REMOVE)
+ memaddr = ADDR_BITS_REMOVE (memaddr);
+
+ /* Use memory fill command for leading 0 bytes. */
+
+ if (current_monitor->fill)
+ {
+ for (i = 0; i < len; i++)
+ if (myaddr[i] != 0)
+ break;
+
+ if (i > 4) /* More than 4 zeros is worth doing */
+ {
+ monitor_debug ("MON FILL %d\n", i);
+ if (current_monitor->flags & MO_FILL_USES_ADDR)
+ monitor_printf (current_monitor->fill, memaddr, (memaddr + i) - 1, 0);
+ else
+ monitor_printf (current_monitor->fill, memaddr, i, 0);
+
+ monitor_expect_prompt (NULL, 0);
+
+ return i;
+ }
+ }
+
+#if 0
+ /* Can't actually use long longs if VAL is an int (nice idea, though). */
+ if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->setmem.cmdll)
+ {
+ len = 8;
+ cmd = current_monitor->setmem.cmdll;
+ }
+ else
+#endif
+ if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->setmem.cmdl)
+ {
+ len = 4;
+ cmd = current_monitor->setmem.cmdl;
+ }
+ else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->setmem.cmdw)
+ {
+ len = 2;
+ cmd = current_monitor->setmem.cmdw;
+ }
+ else
+ {
+ len = 1;
+ cmd = current_monitor->setmem.cmdb;
+ }
+
+ val = extract_unsigned_integer (myaddr, len);
+
+ if (len == 4)
+ {
+ hostval = *(unsigned int *) myaddr;
+ monitor_debug ("Hostval(%08x) val(%08x)\n", hostval, val);
+ }
+
+
+ if (current_monitor->flags & MO_NO_ECHO_ON_SETMEM)
+ monitor_printf_noecho (cmd, memaddr, val);
+ else if (current_monitor->flags & MO_SETMEM_INTERACTIVE)
+ {
+
+ monitor_printf_noecho (cmd, memaddr);
+
+ if (current_monitor->setmem.term)
+ {
+ monitor_debug ("EXP setmem.term");
+ monitor_expect (current_monitor->setmem.term, NULL, 0);
+ monitor_printf ("%x\r", val);
+ }
+ if (current_monitor->setmem.term_cmd)
+ { /* Emit this to get out of the memory editing state */
+ monitor_printf ("%s", current_monitor->setmem.term_cmd);
+ /* Drop through to expecting a prompt */
+ }
+ }
+ else
+ monitor_printf (cmd, memaddr, val);
+
+ monitor_expect_prompt (NULL, 0);
+
return len;
}
-/*
- * monitor_read_inferior_memory -- read LEN bytes from inferior memory
- * at MEMADDR. Put the result at debugger address MYADDR. Returns
- * length moved.
- */
-int
-monitor_read_inferior_memory(memaddr, myaddr, len)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
+
+static int
+monitor_write_even_block (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;
-
- debuglogs (1, "monitor_read_inferior_memory (memaddr=0x%x, myaddr=0x%x, len=%d)", memaddr, myaddr, len);
-
- /* 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;
+ unsigned int val;
+ int written = 0;;
+ /* Enter the sub mode */
+ monitor_printf (current_monitor->setmem.cmdl, memaddr);
+ monitor_expect_prompt (NULL, 0);
+
+ while (len)
+ {
+ val = extract_unsigned_integer (myaddr, 4); /* REALLY */
+ monitor_printf ("%x\r", val);
+ myaddr += 4;
+ memaddr += 4;
+ written += 4;
+ monitor_debug (" @ %s\n", paddr (memaddr));
+ /* If we wanted to, here we could validate the address */
+ monitor_expect_prompt (NULL, 0);
+ }
+ /* Now exit the sub mode */
+ monitor_printf (current_monitor->getreg.term_cmd);
+ monitor_expect_prompt (NULL, 0);
+ return written;
+}
+
+
+static int
+monitor_write_memory_bytes (CORE_ADDR memaddr, char *myaddr, int len)
+{
+ unsigned char val;
+ int written = 0;
+ if (len == 0)
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);
-
- debuglogs (3, "Display %d bytes at %x", len_this_pass, startaddr);
-
- for (i = 0; i < len_this_pass; i++) {
- printf_monitor (ROMCMD(GET_MEM), startaddr, startaddr);
- sprintf (buf, ROMCMD(GET_MEM), startaddr, startaddr);
- if (*ROMDELIM(GET_MEM) != 0) { /* if there's a delimiter */
- expect (ROMDELIM(GET_MEM), 1);
- } else {
- sprintf (buf, ROMCMD(GET_MEM), startaddr, startaddr);
- expect (buf,1); /* get the command echo */
- get_hex_word(1); /* strip away the address */
- }
- get_hex_byte (&myaddr[count++]); /* get the value at this address */
+ /* Enter the sub mode */
+ monitor_printf (current_monitor->setmem.cmdb, memaddr);
+ monitor_expect_prompt (NULL, 0);
+ while (len)
+ {
+ val = *myaddr;
+ monitor_printf ("%x\r", val);
+ myaddr++;
+ memaddr++;
+ written++;
+ /* If we wanted to, here we could validate the address */
+ monitor_expect_prompt (NULL, 0);
+ len--;
+ }
+ /* Now exit the sub mode */
+ monitor_printf (current_monitor->getreg.term_cmd);
+ monitor_expect_prompt (NULL, 0);
+ return written;
+}
- if (*ROMDELIM(GET_MEM) != 0) {
- printf_monitor (CMD_END);
+
+static void
+longlongendswap (unsigned char *a)
+{
+ int i, j;
+ unsigned char x;
+ i = 0;
+ j = 7;
+ while (i < 4)
+ {
+ x = *(a + i);
+ *(a + i) = *(a + j);
+ *(a + j) = x;
+ i++, j--;
+ }
+}
+/* Format 32 chars of long long value, advance the pointer */
+static char *hexlate = "0123456789abcdef";
+static char *
+longlong_hexchars (unsigned long long value,
+ char *outbuff)
+{
+ if (value == 0)
+ {
+ *outbuff++ = '0';
+ return outbuff;
+ }
+ else
+ {
+ static unsigned char disbuf[8]; /* disassembly buffer */
+ unsigned char *scan, *limit; /* loop controls */
+ unsigned char c, nib;
+ int leadzero = 1;
+ scan = disbuf;
+ limit = scan + 8;
+ {
+ unsigned long long *dp;
+ dp = (unsigned long long *) scan;
+ *dp = value;
}
- expect_prompt (1);
- startaddr += 1;
+ longlongendswap (disbuf); /* FIXME: ONly on big endian hosts */
+ while (scan < limit)
+ {
+ c = *scan++; /* a byte of our long long value */
+ if (leadzero)
+ {
+ if (c == 0)
+ continue;
+ else
+ leadzero = 0; /* henceforth we print even zeroes */
+ }
+ nib = c >> 4; /* high nibble bits */
+ *outbuff++ = hexlate[nib];
+ nib = c & 0x0f; /* low nibble bits */
+ *outbuff++ = hexlate[nib];
+ }
+ return outbuff;
+ }
+} /* longlong_hexchars */
+
+
+
+/* I am only going to call this when writing virtual byte streams.
+ Which possably entails endian conversions
+ */
+static int
+monitor_write_memory_longlongs (CORE_ADDR memaddr, char *myaddr, int len)
+{
+ static char hexstage[20]; /* At least 16 digits required, plus null */
+ char *endstring;
+ long long *llptr;
+ long long value;
+ int written = 0;
+ llptr = (unsigned long long *) myaddr;
+ if (len == 0)
+ return 0;
+ monitor_printf (current_monitor->setmem.cmdll, memaddr);
+ monitor_expect_prompt (NULL, 0);
+ while (len >= 8)
+ {
+ value = *llptr;
+ endstring = longlong_hexchars (*llptr, hexstage);
+ *endstring = '\0'; /* NUll terminate for printf */
+ monitor_printf ("%s\r", hexstage);
+ llptr++;
+ memaddr += 8;
+ written += 8;
+ /* If we wanted to, here we could validate the address */
+ monitor_expect_prompt (NULL, 0);
+ len -= 8;
}
- }
+ /* Now exit the sub mode */
+ monitor_printf (current_monitor->getreg.term_cmd);
+ monitor_expect_prompt (NULL, 0);
+ return written;
+} /* */
+
+
+
+/* ----- MONITOR_WRITE_MEMORY_BLOCK ---------------------------- */
+/* This is for the large blocks of memory which may occur in downloading.
+ And for monitors which use interactive entry,
+ And for monitors which do not have other downloading methods.
+ Without this, we will end up calling monitor_write_memory many times
+ and do the entry and exit of the sub mode many times
+ This currently assumes...
+ MO_SETMEM_INTERACTIVE
+ ! MO_NO_ECHO_ON_SETMEM
+ To use this, the you have to patch the monitor_cmds block with
+ this function. Otherwise, its not tuned up for use by all
+ monitor variations.
+ */
+
+static int
+monitor_write_memory_block (CORE_ADDR memaddr, char *myaddr, int len)
+{
+ int written;
+ written = 0;
+ /* FIXME: This would be a good place to put the zero test */
+#if 1
+ if ((len > 8) && (((len & 0x07)) == 0) && current_monitor->setmem.cmdll)
+ {
+ return monitor_write_memory_longlongs (memaddr, myaddr, len);
+ }
+#endif
+#if 0
+ if (len > 4)
+ {
+ int sublen;
+ written = monitor_write_even_block (memaddr, myaddr, len);
+ /* Adjust calling parameters by written amount */
+ memaddr += written;
+ myaddr += written;
+ len -= written;
+ }
+#endif
+ written = monitor_write_memory_bytes (memaddr, myaddr, len);
+ return written;
+}
+
+/* This is an alternate form of monitor_read_memory which is used for monitors
+ which can only read a single byte/word/etc. at a time. */
+
+static int
+monitor_read_memory_single (CORE_ADDR memaddr, char *myaddr, int len)
+{
+ unsigned int val;
+ char membuf[sizeof (int) * 2 + 1];
+ char *p;
+ char *cmd;
+ int i;
+
+ monitor_debug ("MON read single\n");
+#if 0
+ /* Can't actually use long longs (nice idea, though). In fact, the
+ call to strtoul below will fail if it tries to convert a value
+ that's too big to fit in a long. */
+ if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->getmem.cmdll)
+ {
+ len = 8;
+ cmd = current_monitor->getmem.cmdll;
+ }
+ else
+#endif
+ if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->getmem.cmdl)
+ {
+ len = 4;
+ cmd = current_monitor->getmem.cmdl;
+ }
+ else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->getmem.cmdw)
+ {
+ len = 2;
+ cmd = current_monitor->getmem.cmdw;
+ }
+ else
+ {
+ len = 1;
+ cmd = current_monitor->getmem.cmdb;
+ }
+
+ /* Send the examine command. */
+
+ monitor_printf (cmd, memaddr);
+
+ /* If RESP_DELIM is specified, we search for that as a leading
+ delimiter for the memory value. Otherwise, we just start
+ searching from the start of the buf. */
+
+ if (current_monitor->getmem.resp_delim)
+ {
+ monitor_debug ("EXP getmem.resp_delim\n");
+ monitor_expect_regexp (&getmem_resp_delim_pattern, NULL, 0);
+ }
+
+ /* Now, read the appropriate number of hex digits for this loc,
+ skipping spaces. */
+
+ /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */
+ if (current_monitor->flags & MO_HEX_PREFIX)
+ {
+ int c;
+
+ c = readchar (timeout);
+ while (c == ' ')
+ c = readchar (timeout);
+ if ((c == '0') && ((c = readchar (timeout)) == 'x'))
+ ;
+ else
+ monitor_error ("monitor_read_memory_single",
+ "bad response from monitor",
+ memaddr, i, membuf, c);
+ }
+ for (i = 0; i < len * 2; i++)
+ {
+ int c;
+
+ while (1)
+ {
+ c = readchar (timeout);
+ if (isxdigit (c))
+ break;
+ if (c == ' ')
+ continue;
+
+ monitor_error ("monitor_read_memory_single",
+ "bad response from monitor",
+ memaddr, i, membuf, c);
+ }
+
+ membuf[i] = c;
+ }
+
+ membuf[i] = '\000'; /* terminate the number */
+
+/* If TERM is present, we wait for that to show up. Also, (if TERM is
+ present), we will send TERM_CMD if that is present. In any case, we collect
+ all of the output into buf, and then wait for the normal prompt. */
+
+ if (current_monitor->getmem.term)
+ {
+ monitor_expect (current_monitor->getmem.term, NULL, 0); /* get response */
+
+ if (current_monitor->getmem.term_cmd)
+ {
+ monitor_printf (current_monitor->getmem.term_cmd);
+ monitor_expect_prompt (NULL, 0);
+ }
+ }
+ else
+ monitor_expect_prompt (NULL, 0); /* get response */
+
+ p = membuf;
+ val = strtoul (membuf, &p, 16);
+
+ if (val == 0 && membuf == p)
+ monitor_error ("monitor_read_memory_single",
+ "bad value from monitor",
+ memaddr, 0, membuf, 0);
+
+ /* supply register stores in target byte order, so swap here */
+
+ store_unsigned_integer (myaddr, len, val);
+
return len;
}
-/* FIXME-someday! merge these two. */
-int
-monitor_xfer_inferior_memory (memaddr, myaddr, len, write, target)
+/* Copy LEN bytes of data from debugger memory at MYADDR to inferior's
+ memory at MEMADDR. Returns length moved. Currently, we do no more
+ than 16 bytes at a time. */
+
+static int
+monitor_read_memory (CORE_ADDR memaddr, char *myaddr, int len)
+{
+ unsigned int val;
+ char buf[512];
+ char *p, *p1;
+ int resp_len;
+ int i;
+ CORE_ADDR dumpaddr;
+
+ if (len <= 0)
+ {
+ monitor_debug ("Zero length call to monitor_read_memory\n");
+ return 0;
+ }
+
+ monitor_debug ("MON read block ta(%s) ha(%lx) %d\n",
+ paddr_nz (memaddr), (long) myaddr, len);
+
+ if (current_monitor->flags & MO_ADDR_BITS_REMOVE)
+ memaddr = ADDR_BITS_REMOVE (memaddr);
+
+ if (current_monitor->flags & MO_GETMEM_READ_SINGLE)
+ return monitor_read_memory_single (memaddr, myaddr, len);
+
+ len = min (len, 16);
+
+ /* Some dumpers align the first data with the preceeding 16
+ byte boundary. Some print blanks and start at the
+ requested boundary. EXACT_DUMPADDR
+ */
+
+ dumpaddr = (current_monitor->flags & MO_EXACT_DUMPADDR)
+ ? memaddr : memaddr & ~0x0f;
+
+ /* See if xfer would cross a 16 byte boundary. If so, clip it. */
+ if (((memaddr ^ (memaddr + len - 1)) & ~0xf) != 0)
+ len = ((memaddr + len) & ~0xf) - memaddr;
+
+ /* send the memory examine command */
+
+ if (current_monitor->flags & MO_GETMEM_NEEDS_RANGE)
+ monitor_printf (current_monitor->getmem.cmdb, memaddr, memaddr + len);
+ else if (current_monitor->flags & MO_GETMEM_16_BOUNDARY)
+ monitor_printf (current_monitor->getmem.cmdb, dumpaddr);
+ else
+ monitor_printf (current_monitor->getmem.cmdb, memaddr, len);
+
+ /* If TERM is present, we wait for that to show up. Also, (if TERM
+ is present), we will send TERM_CMD if that is present. In any
+ case, we collect all of the output into buf, and then wait for
+ the normal prompt. */
+
+ if (current_monitor->getmem.term)
+ {
+ resp_len = monitor_expect (current_monitor->getmem.term, buf, sizeof buf); /* get response */
+
+ if (resp_len <= 0)
+ monitor_error ("monitor_read_memory",
+ "excessive response from monitor",
+ memaddr, resp_len, buf, 0);
+
+ if (current_monitor->getmem.term_cmd)
+ {
+ SERIAL_WRITE (monitor_desc, current_monitor->getmem.term_cmd,
+ strlen (current_monitor->getmem.term_cmd));
+ monitor_expect_prompt (NULL, 0);
+ }
+ }
+ else
+ resp_len = monitor_expect_prompt (buf, sizeof buf); /* get response */
+
+ p = buf;
+
+ /* If RESP_DELIM is specified, we search for that as a leading
+ delimiter for the values. Otherwise, we just start searching
+ from the start of the buf. */
+
+ if (current_monitor->getmem.resp_delim)
+ {
+ int retval, tmp;
+ struct re_registers resp_strings;
+ monitor_debug ("MON getmem.resp_delim %s\n", current_monitor->getmem.resp_delim);
+
+ memset (&resp_strings, 0, sizeof (struct re_registers));
+ tmp = strlen (p);
+ retval = re_search (&getmem_resp_delim_pattern, p, tmp, 0, tmp,
+ &resp_strings);
+
+ if (retval < 0)
+ monitor_error ("monitor_read_memory",
+ "bad response from monitor",
+ memaddr, resp_len, buf, 0);
+
+ p += resp_strings.end[0];
+#if 0
+ p = strstr (p, current_monitor->getmem.resp_delim);
+ if (!p)
+ monitor_error ("monitor_read_memory",
+ "bad response from monitor",
+ memaddr, resp_len, buf, 0);
+ p += strlen (current_monitor->getmem.resp_delim);
+#endif
+ }
+ monitor_debug ("MON scanning %d ,%lx '%s'\n", len, (long) p, p);
+ if (current_monitor->flags & MO_GETMEM_16_BOUNDARY)
+ {
+ char c;
+ int fetched = 0;
+ i = len;
+ c = *p;
+
+
+ while (!(c == '\000' || c == '\n' || c == '\r') && i > 0)
+ {
+ if (isxdigit (c))
+ {
+ if ((dumpaddr >= memaddr) && (i > 0))
+ {
+ val = fromhex (c) * 16 + fromhex (*(p + 1));
+ *myaddr++ = val;
+ if (monitor_debug_p || remote_debug)
+ fprintf_unfiltered (gdb_stdlog, "[%02x]", val);
+ --i;
+ fetched++;
+ }
+ ++dumpaddr;
+ ++p;
+ }
+ ++p; /* skip a blank or other non hex char */
+ c = *p;
+ }
+ if (fetched == 0)
+ error ("Failed to read via monitor");
+ if (monitor_debug_p || remote_debug)
+ fprintf_unfiltered (gdb_stdlog, "\n");
+ return fetched; /* Return the number of bytes actually read */
+ }
+ monitor_debug ("MON scanning bytes\n");
+
+ for (i = len; i > 0; i--)
+ {
+ /* Skip non-hex chars, but bomb on end of string and newlines */
+
+ while (1)
+ {
+ if (isxdigit (*p))
+ break;
+
+ if (*p == '\000' || *p == '\n' || *p == '\r')
+ monitor_error ("monitor_read_memory",
+ "badly terminated response from monitor",
+ memaddr, resp_len, buf, 0);
+ p++;
+ }
+
+ val = strtoul (p, &p1, 16);
+
+ if (val == 0 && p == p1)
+ monitor_error ("monitor_read_memory",
+ "bad value from monitor",
+ memaddr, resp_len, buf, 0);
+
+ *myaddr++ = val;
+
+ if (i == 1)
+ break;
+
+ p = p1;
+ }
+
+ return len;
+}
+
+static int
+monitor_xfer_memory (memaddr, myaddr, len, write, target)
CORE_ADDR memaddr;
char *myaddr;
int len;
int write;
- struct target_ops *target; /* ignored */
+ struct target_ops *target; /* ignored */
{
- if (write)
- return monitor_write_inferior_memory (memaddr, myaddr, len);
- else
- return monitor_read_inferior_memory (memaddr, myaddr, len);
+ return dcache_xfer_memory (remote_dcache, memaddr, myaddr, len, write);
}
-void
-monitor_kill (args, from_tty)
- char *args;
- int from_tty;
+static void
+monitor_kill (void)
+{
+ return; /* ignore attempts to kill target system */
+}
+
+/* All we actually do is set the PC to the start address of exec_bfd, and start
+ the program at that point. */
+
+static void
+monitor_create_inferior (char *exec_file, char *args, char **env)
{
- return; /* ignore attempts to kill target system */
+ if (args && (*args != '\000'))
+ error ("Args are not supported by the monitor.");
+
+ first_time = 1;
+ clear_proceed_status ();
+ proceed (bfd_get_start_address (exec_bfd), TARGET_SIGNAL_0, 0);
}
/* Clean up when a program exits.
run again without a download. Don't leave it full of breakpoint
instructions. */
-void
-monitor_mourn_inferior ()
+static void
+monitor_mourn_inferior (void)
{
- remove_breakpoints ();
+ unpush_target (targ_ops);
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};
+/* Tell the monitor to add a breakpoint. */
-/*
- * monitor_insert_breakpoint -- add a breakpoint
- */
-int
-monitor_insert_breakpoint (addr, shadow)
- CORE_ADDR addr;
- char *shadow;
+static int
+monitor_insert_breakpoint (CORE_ADDR addr, char *shadow)
{
int i;
-
- debuglogs (1, "monitor_insert_breakpoint() addr = 0x%x", addr);
-
- for (i = 0; i <= MAX_MONITOR_BREAKPOINTS; i++) {
- if (breakaddr[i] == 0) {
- breakaddr[i] = addr;
- if (sr_get_debug() > 4)
- 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;
+ unsigned char *bp;
+ int bplen;
+
+ monitor_debug ("MON inst bkpt %s\n", paddr (addr));
+ if (current_monitor->set_break == NULL)
+ error ("No set_break defined for this monitor");
+
+ if (current_monitor->flags & MO_ADDR_BITS_REMOVE)
+ addr = ADDR_BITS_REMOVE (addr);
+
+ /* Determine appropriate breakpoint size for this address. */
+ bp = memory_breakpoint_from_pc (&addr, &bplen);
+
+ for (i = 0; i < current_monitor->num_breakpoints; i++)
+ {
+ if (breakaddr[i] == 0)
+ {
+ breakaddr[i] = addr;
+ monitor_read_memory (addr, shadow, bplen);
+ monitor_printf (current_monitor->set_break, addr);
+ monitor_expect_prompt (NULL, 0);
+ return 0;
+ }
}
- }
- fprintf(stderr, "Too many breakpoints (> 16) for monitor\n");
- return 1;
+ error ("Too many breakpoints (> %d) for monitor.", current_monitor->num_breakpoints);
}
-/*
- * _remove_breakpoint -- Tell the monitor to remove a breakpoint
- */
-int
-monitor_remove_breakpoint (addr, shadow)
- CORE_ADDR addr;
- char *shadow;
+/* Tell the monitor to remove a breakpoint. */
+
+static int
+monitor_remove_breakpoint (CORE_ADDR addr, char *shadow)
{
int i;
- debuglogs (1, "monitor_remove_breakpoint() addr = 0x%x", addr);
+ monitor_debug ("MON rmbkpt %s\n", paddr (addr));
+ if (current_monitor->clr_break == NULL)
+ error ("No clr_break defined for this monitor");
+
+ if (current_monitor->flags & MO_ADDR_BITS_REMOVE)
+ addr = ADDR_BITS_REMOVE (addr);
+
+ for (i = 0; i < current_monitor->num_breakpoints; i++)
+ {
+ if (breakaddr[i] == addr)
+ {
+ breakaddr[i] = 0;
+ /* some monitors remove breakpoints based on the address */
+ if (current_monitor->flags & MO_CLR_BREAK_USES_ADDR)
+ monitor_printf (current_monitor->clr_break, addr);
+ else if (current_monitor->flags & MO_CLR_BREAK_1_BASED)
+ monitor_printf (current_monitor->clr_break, i + 1);
+ else
+ monitor_printf (current_monitor->clr_break, i);
+ monitor_expect_prompt (NULL, 0);
+ return 0;
+ }
+ }
+ fprintf_unfiltered (gdb_stderr,
+ "Can't find breakpoint associated with 0x%s\n",
+ paddr_nz (addr));
+ return 1;
+}
+
+/* monitor_wait_srec_ack -- wait for the target to send an acknowledgement for
+ an S-record. Return non-zero if the ACK is received properly. */
- for (i = 0; i < MAX_MONITOR_BREAKPOINTS; i++) {
- if (breakaddr[i] == addr) {
- breakaddr[i] = 0;
- /* some monitors remove breakpoints based on the address */
- if (CLR_BREAK_ADDR)
- printf_monitor(CLR_BREAK_CMD, addr);
- else
- printf_monitor(CLR_BREAK_CMD, i);
- expect_prompt(1);
- return 0;
+static int
+monitor_wait_srec_ack (void)
+{
+ int ch;
+
+ if (current_monitor->flags & MO_SREC_ACK_PLUS)
+ {
+ return (readchar (timeout) == '+');
+ }
+ else if (current_monitor->flags & MO_SREC_ACK_ROTATE)
+ {
+ /* Eat two backspaces, a "rotating" char (|/-\), and a space. */
+ if ((ch = readchar (1)) < 0)
+ return 0;
+ if ((ch = readchar (1)) < 0)
+ return 0;
+ if ((ch = readchar (1)) < 0)
+ return 0;
+ if ((ch = readchar (1)) < 0)
+ return 0;
}
- }
- fprintf(stderr, "Can't find breakpoint associated with 0x%x\n", addr);
return 1;
}
-/* monitor_load -- load a file. This file determines which of the
- * supported formats to use. The current types are:
- * FIXME: not all types supported yet.
- * default - reads any file using bfd and writes it to memory. This
- * is really slow.
- * srec - reads binary file using bfd and writes it as an
- * ascii srecord.
- * xmodem-bin - reads a binary file using bfd, and downloads it
- * using xmodem protocol.
- * xmodem-srec - reads a binary file using bfd, and after converting
- * it downloads it as an srecord using xmodem protocol.
- * ascii-srec - reads a ascii srecord file and downloads it
- * without a change.
- * ascii-xmodem - reads a ascii file and downloads using xmodem
- * protocol.
- */
-void
-monitor_load (file, fromtty)
- char *file;
- int fromtty;
+/* monitor_load -- download a file. */
+
+static void
+monitor_load (char *file, int from_tty)
{
- FILE *download;
- int i, bytes_read;
+ dcache_invd (remote_dcache);
+ monitor_debug ("MON load\n");
+
+ if (current_monitor->load_routine)
+ current_monitor->load_routine (monitor_desc, file, hashmark);
+ else
+ { /* The default is ascii S-records */
+ int n;
+ unsigned long load_offset;
+ char buf[128];
+
+ /* enable user to specify address for downloading as 2nd arg to load */
+ n = sscanf (file, "%s 0x%lx", buf, &load_offset);
+ if (n > 1)
+ file = buf;
+ else
+ load_offset = 0;
+
+ monitor_printf (current_monitor->load);
+ if (current_monitor->loadresp)
+ monitor_expect (current_monitor->loadresp, NULL, 0);
+
+ load_srec (monitor_desc, file, (bfd_vma) load_offset,
+ 32, SREC_ALL, hashmark,
+ current_monitor->flags & MO_SREC_ACK ?
+ monitor_wait_srec_ack : NULL);
+
+ monitor_expect_prompt (NULL, 0);
+ }
- debuglogs (1, "Loading %s to monitor", file);
+/* Finally, make the PC point at the start address */
- if (STREQ (loadtype_str, "default")) { /* default, load a binary */
- gr_load_image (file, fromtty); /* by writing it into memory */
- }
+ if (exec_bfd)
+ write_pc (bfd_get_start_address (exec_bfd));
- if (STREQ (loadtype_str, "srec")) { /* load an srecord by converting */
- monitor_load_srec(file, 0); /* if from a binary */
- }
+ inferior_pid = 0; /* No process now */
- if (STREQ (loadtype_str, "ascii-srec")) { /* load an srecord file */
- monitor_load_ascii_srec(file, fromtty); /* if from a binary */
- }
+/* This is necessary because many things were based on the PC at the time that
+ we attached to the monitor, which is no longer valid now that we have loaded
+ new code (and just changed the PC). Another way to do this might be to call
+ normal_stop, except that the stack may not be valid, and things would get
+ horribly confused... */
- if (STREQ (loadtype_str, "xmodem-srec")) { /* load an srecord using the */
- monitor_load_srec(file, XMODEM);
- }
+ clear_symtab_users ();
}
-/*
- * monitor_load_ascii_srec -- download an ASCII srecord file.
- */
-#define DOWNLOAD_LINE_SIZE 100
-int
-monitor_load_ascii_srec (file, fromtty)
- char *file;
- int fromtty;
+static void
+monitor_stop (void)
{
- FILE *download;
- char buf[DOWNLOAD_LINE_SIZE];
- int i, bytes_read;
-
- debuglogs (1, "Loading an ASCII srecord file, %s.", file);
-
- download = fopen (file, "r");
- if (download == NULL) {
- error ("%s Does not exist", file);
- return;
- }
-
- printf_monitor (LOAD_CMD);
- sleep(1);
- while (!feof (download)) {
- bytes_read = fread (buf, sizeof (char), DOWNLOAD_LINE_SIZE, download);
- if (hashmark) {
- putchar ('.');
- fflush (stdout);
- }
- if (SERIAL_WRITE(monitor_desc, buf, bytes_read)) {
- fprintf(stderr, "SERIAL_WRITE failed: (while downloading) %s\n", safe_strerror(errno));
- break;
- }
- i = 0;
- while (i++ <=200) {} ; /* 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");
- expect_prompt(1);
- fclose (download);
+ monitor_debug ("MON stop\n");
+ if ((current_monitor->flags & MO_SEND_BREAK_ON_STOP) != 0)
+ SERIAL_SEND_BREAK (monitor_desc);
+ if (current_monitor->stop)
+ monitor_printf_noecho (current_monitor->stop);
}
-/*
- * monitor_command -- put a command string, in args, out to MONITOR.
- * Output from MONITOR is placed on the users terminal until the
- * prompt is seen. FIXME: We read the charcters ourseleves here
- * cause of a nasty echo.
- */
-void
-monitor_command (args, fromtty)
- char *args;
- int fromtty;
-{
+/* Put a COMMAND string out to MONITOR. Output from MONITOR is placed
+ in OUTPUT until the prompt is seen. FIXME: We read the characters
+ ourseleves here cause of a nasty echo. */
+static void
+monitor_rcmd (char *command,
+ struct ui_file *outbuf)
+{
char *p;
- char c, cp;
- p = PROMPT;
-
- debuglogs (1, "monitor_command (args=%s)", args);
+ int resp_len;
+ char buf[1000];
if (monitor_desc == NULL)
- error("monitor target not open.");
+ error ("monitor target not open.");
- if (!args)
- error("Missing command.");
-
- printf_monitor ("%s\n", args);
+ p = current_monitor->prompt;
- expect_prompt(0);
-}
+ /* Send the command. Note that if no args were supplied, then we're
+ just sending the monitor a newline, which is sometimes useful. */
-/*
- * monitor_load_srec -- download a binary file by converting it to srecords. This
- * will also use xmodem to download the resulting file.
- *
- * A download goes like this when using xmodem:
- * Receiver: Sender
- * NAK ---------->
- * <-------- (packet) [SOH|1|1|data|SUM]
- * ACK ---------->
- * <-------- (packet) [SOH|2|2|data|SUM]
- * ACK ---------->
- * <-------- EOT
- * ACK ---------->
- *
- * ACK = 0x06
- * NAK = 0x15
- * EOT = 0x04
- *
- */
-static void
-monitor_load_srec (args, protocol)
- char *args;
- int protocol;
-{
- bfd *abfd;
- asection *s;
- char buffer[1024];
- char srec[1024];
- char packet[XMODEM_PACKETSIZE];
- int i;
- int retries;
- int type = 0; /* default to a type 0, header record */
- int srec_frame = 57; /* FIXME: this must be 57 There is 12 bytes
- of header, and 2 bytes of checksum at the end.
- The problem is an xmodem packet holds exactly
- 128 bytes. */
-
- abfd = bfd_openr (args, 0);
- if (!abfd) {
- printf_filtered ("Unable to open file %s\n", args);
- return;
- }
-
- if (bfd_check_format (abfd, bfd_object) == 0) {
- printf_filtered ("File is not an object file\n");
- return;
- }
-
- printf_monitor (LOAD_CMD); /* tell the monitor to load */
- if (protocol == XMODEM) { /* get the NAK from the target */
- if (GETNAK) {
- debuglogs (3, "Got the NAK to start loading");
- } else {
- printf_monitor ("%c", EOT);
- debuglogs (3, "Never got the NAK to start loading");
- error ("Never got the NAK to start loading");
- }
- }
-
- s = abfd->sections;
- while (s != (asection *) NULL) {
- if (s->flags & SEC_LOAD) {
- char *buffer = xmalloc (srec_frame);
- printf_filtered ("%s\t: 0x%4x .. 0x%4x ", s->name, s->vma, s->vma + s->_raw_size);
- fflush (stdout);
- for (i = 0; i < s->_raw_size; i += srec_frame) {
- if (srec_frame > s->_raw_size - i)
- srec_frame = s->_raw_size - i;
-
- bfd_get_section_contents (abfd, s, buffer, i, srec_frame);
- monitor_make_srec (srec, type, s->vma + i, buffer, srec_frame);
- if (protocol == XMODEM) { /* send a packet using xmodem */
- make_xmodem_packet (packet, srec, XMODEM_DATASIZE);
- write_monitor (packet, XMODEM_PACKETSIZE+1);
- retries = 0;
- while (retries++ <= 3) {
- if (GETNAK) { /* Resend packet */
- debuglogs (3, "Got a NAK, resending packet");
- sleep(1);
- write_monitor (packet, XMODEM_PACKETSIZE+1); /* send it again */
- if (GETACK) /* ACKnowledged, get next data chunk */
- break;
- }
- }
- if (retries >= 4) { /* too many tries, must be hosed */
- printf_monitor ("%c", EOT);
- error ("Never got a ACK after sending an xmodem packet");
- }
- } else { /* no protocols at all */
- printf_monitor ("%s\n", srec);
- }
- if (hashmark)
- printf_filtered ("#");
- type = 3; /* switch to a 4 byte address record */
- fflush (stdout);
- }
- printf_filtered ("\n");
- free (buffer);
- } else {
- debuglogs (3, "%s doesn't need to be loaded", s->name);
- }
- s = s->next;
- }
-
- /*
- write a type 7 terminator record. no data for a type 7,
- and there is no data, so len is 0.
- */
- monitor_make_srec (srec, 7, abfd->start_address, "", 0);
- printf_monitor ("%s\n", srec);
- if (protocol == XMODEM) {
- printf_monitor ("%c", EOT);
- if (!GETACK)
- error ("Never got ACK after sending EOT");
- }
-
- if (hashmark)
- putchar ('\n');
-
- expect_prompt ();
+ monitor_printf ("%s\r", (command ? command : ""));
+
+ resp_len = monitor_expect_prompt (buf, sizeof buf);
+
+ fputs_unfiltered (buf, outbuf); /* Output the response */
}
-/*
- * getacknak -- get an ACK or a NAK from the target.
- * returns 1 (true) or 0 (false) This is
- * for xmodem. ANy string starting with "***"
- * is an error message from the target.
- * Here's a few from the WinBond w89k "Cougar" PA board.
- * *** Too many errors found.
- * *** Bad command
- * *** Command syntax error
- */
-int
-getacknak (byte)
- int byte;
+/* Convert hex digit A to a number. */
+
+#if 0
+static int
+from_hex (int a)
{
- char character;
- int i;
-
- i = 0;
- while (i++ < 60) {
- character = (char)readchar (0);
- if (character == 0xfffffffe) { /* empty uart */
- if (sr_get_debug() > 3)
- putchar ('.');
- fflush (stdout);
- sleep (1);
- continue;
- }
- if (character == CANCEL) { /* target aborted load */
- expect_prompt (0);
- error ("Got a CANCEL from the target.");
- }
- if (character == '*') { /* look for missed error message */
- expect_prompt (0);
- error ("Got an error message from the target");
- }
- debuglogs (3, "Got a %s (0x%x or \'%c\'), expecting a %s.\n",
- (character == ACK) ? "ACK" : (character == NAK) ? "NAK" : "BOGUS",
- character, character, (byte == ACK) ? "ACK" : "NAK");
- if (character == byte) /* got what we wanted */
- return 1;
- if (character == ((byte == ACK) ? NAK : ACK)) { /* got the opposite */
- debuglogs (3, "Got the opposite, wanted 0x%x, got a 0x%x", byte, character);
- return 0;
- }
- sleep (1);
- }
- return 0;
+ if (a >= '0' && a <= '9')
+ return a - '0';
+ if (a >= 'a' && a <= 'f')
+ return a - 'a' + 10;
+ if (a >= 'A' && a <= 'F')
+ return a - 'A' + 10;
+
+ error ("Reply contains invalid hex digit 0x%x", a);
}
+#endif
-/*
- * monitor_make_srec -- make an srecord. This writes each line, one at a
- * time, each with it's own header and trailer line.
- * An srecord looks like this:
- *
- * byte count-+ address
- * start ---+ | | data +- checksum
- * | | | |
- * S01000006F6B692D746573742E73726563E4
- * S315000448600000000000000000FC00005900000000E9
- * S31A0004000023C1400037DE00F023604000377B009020825000348D
- * S30B0004485A0000000000004E
- * S70500040000F6
- *
- * S<type><length><address><data><checksum>
- *
- * Where
- * - length
- * is the number of bytes following upto the checksum. Note that
- * this is not the number of chars following, since it takes two
- * chars to represent a byte.
- * - type
- * is one of:
- * 0) header record
- * 1) two byte address data record
- * 2) three byte address data record
- * 3) four byte address data record
- * 7) four byte address termination record
- * 8) three byte address termination record
- * 9) two byte address termination record
- *
- * - address
- * is the start address of the data following, or in the case of
- * a termination record, the start address of the image
- * - data
- * is the data.
- * - checksum
- * is the sum of all the raw byte data in the record, from the length
- * upwards, modulo 256 and subtracted from 255.
- */
-int
-monitor_make_srec (buffer, type, memaddr, myaddr, len)
- char *buffer;
- int type;
- CORE_ADDR memaddr;
- unsigned char *myaddr;
- int len;
+char *
+monitor_get_dev_name (void)
{
- int checksum;
- int i;
- char *buf;
-
- buf = buffer;
- debuglogs (4, "monitor_make_srec (buffer=0x%x, type=%d, memaddr=0x%x, len=%d",
- buffer, type, memaddr, len);
- checksum = 0;
-
- /*
- create the header for the srec. 4 is the number of bytes in the address,
- and 1 is the number of bytes in the count.
- */
- if (type == 0) /* FIXME: type 0 is optional */
- type = 3; /* so use data as it works */
- sprintf (buf, "S%d%02X%08X", type, len + 4 + 1, memaddr);
- buf += 12;
-
- checksum += (len + 4 + 1 /* calculate the checksum */
- + (memaddr & 0xff)
- + ((memaddr >> 8) & 0xff)
- + ((memaddr >> 16) & 0xff)
- + ((memaddr >> 24) & 0xff));
-
- for (i = 0; i < len; i++) { /* build the srecord */
- sprintf (buf, "%02X", myaddr[i]);
- checksum += myaddr[i];
- buf += 2;
- }
-
- sprintf(buf, "%02X", ~checksum & 0xff); /* add the checksum */
- debuglogs (3, "srec is \"%s\"", buffer);
-
- return(0);
+ return dev_name;
}
-/*
- * make_xmodem_packet -- this takes a 128 bytes of data and makes a packet
- * out of it.
- *
- * Each packet looks like this:
- * +-----+-------+-------+------+-----+
- * | SOH | Seq1. | Seq2. | data | SUM |
- * +-----+-------+-------+------+-----+
- * SOH = 0x01
- * Seq1 = The sequence number.
- * Seq2 = The complement of the sequence number.
- * Data = A 128 bytes of data.
- * SUM = Add the contents of the 128 bytes and use the low-order
- * 8 bits of the result.
- */
-void
-make_xmodem_packet (packet, data, len)
- unsigned char packet[];
- unsigned char *data;
- int len;
+static struct target_ops monitor_ops;
+
+static void
+init_base_monitor_ops (void)
{
- static int sequence = 1;
- int i, sum;
- unsigned char *buf;
-
- buf = data;
- /* build the packet header */
- packet[0] = SOH;
- packet[1] = sequence;
- packet[2] = 255 - sequence;
- sequence++;
-#if 0
- packet[2] = ~sequence++; /* the complement is the sequence checksum */
-#endif
-
- sum = 0; /* calculate the data checksum */
- for (i = 3; i <= len + 2; i++) {
- packet[i] = *buf;
- sum += *buf;
- buf++;
- }
-
- for (i = len+1 ; i <= XMODEM_DATASIZE ; i++) { /* add padding for the rest of the packet */
- packet[i] = '0';
- }
-
- packet[XMODEM_PACKETSIZE] = sum & 0xff; /* add the checksum */
-
- if (sr_get_debug() > 4)
- debuglogs (4, "The xmodem checksum is %d (0x%x)\n", sum & 0xff, sum & 0xff);
- print_xmodem_packet (packet);
-}
+ monitor_ops.to_shortname = NULL;
+ monitor_ops.to_longname = NULL;
+ monitor_ops.to_doc = NULL;
+ monitor_ops.to_open = NULL;
+ monitor_ops.to_close = monitor_close;
+ monitor_ops.to_attach = NULL;
+ monitor_ops.to_post_attach = NULL;
+ monitor_ops.to_require_attach = NULL;
+ monitor_ops.to_detach = monitor_detach;
+ monitor_ops.to_require_detach = NULL;
+ monitor_ops.to_resume = monitor_resume;
+ monitor_ops.to_wait = monitor_wait;
+ monitor_ops.to_post_wait = NULL;
+ monitor_ops.to_fetch_registers = monitor_fetch_registers;
+ monitor_ops.to_store_registers = monitor_store_registers;
+ monitor_ops.to_prepare_to_store = monitor_prepare_to_store;
+ monitor_ops.to_xfer_memory = monitor_xfer_memory;
+ monitor_ops.to_files_info = monitor_files_info;
+ monitor_ops.to_insert_breakpoint = monitor_insert_breakpoint;
+ monitor_ops.to_remove_breakpoint = monitor_remove_breakpoint;
+ monitor_ops.to_terminal_init = 0;
+ monitor_ops.to_terminal_inferior = 0;
+ monitor_ops.to_terminal_ours_for_output = 0;
+ monitor_ops.to_terminal_ours = 0;
+ monitor_ops.to_terminal_info = 0;
+ monitor_ops.to_kill = monitor_kill;
+ monitor_ops.to_load = monitor_load;
+ monitor_ops.to_lookup_symbol = 0;
+ monitor_ops.to_create_inferior = monitor_create_inferior;
+ monitor_ops.to_post_startup_inferior = NULL;
+ monitor_ops.to_acknowledge_created_inferior = NULL;
+ monitor_ops.to_clone_and_follow_inferior = NULL;
+ monitor_ops.to_post_follow_inferior_by_clone = NULL;
+ monitor_ops.to_insert_fork_catchpoint = NULL;
+ monitor_ops.to_remove_fork_catchpoint = NULL;
+ monitor_ops.to_insert_vfork_catchpoint = NULL;
+ monitor_ops.to_remove_vfork_catchpoint = NULL;
+ monitor_ops.to_has_forked = NULL;
+ monitor_ops.to_has_vforked = NULL;
+ monitor_ops.to_can_follow_vfork_prior_to_exec = NULL;
+ monitor_ops.to_post_follow_vfork = NULL;
+ monitor_ops.to_insert_exec_catchpoint = NULL;
+ monitor_ops.to_remove_exec_catchpoint = NULL;
+ monitor_ops.to_has_execd = NULL;
+ monitor_ops.to_reported_exec_events_per_exec_call = NULL;
+ monitor_ops.to_has_exited = NULL;
+ monitor_ops.to_mourn_inferior = monitor_mourn_inferior;
+ monitor_ops.to_can_run = 0;
+ monitor_ops.to_notice_signals = 0;
+ monitor_ops.to_thread_alive = 0;
+ monitor_ops.to_stop = monitor_stop;
+ monitor_ops.to_rcmd = monitor_rcmd;
+ monitor_ops.to_pid_to_exec_file = NULL;
+ monitor_ops.to_core_file_to_sym_file = NULL;
+ monitor_ops.to_stratum = process_stratum;
+ monitor_ops.DONT_USE = 0;
+ monitor_ops.to_has_all_memory = 1;
+ monitor_ops.to_has_memory = 1;
+ monitor_ops.to_has_stack = 1;
+ monitor_ops.to_has_registers = 1;
+ monitor_ops.to_has_execution = 1;
+ monitor_ops.to_sections = 0;
+ monitor_ops.to_sections_end = 0;
+ monitor_ops.to_magic = OPS_MAGIC;
+} /* init_base_monitor_ops */
+
+/* Init the target_ops structure pointed at by OPS */
-/*
- * print_xmodem_packet -- print the packet as a debug check
- */
void
-print_xmodem_packet(packet)
- char packet[];
+init_monitor_ops (struct target_ops *ops)
{
- int i;
- static int lastseq;
- int sum;
-
- /* take apart the packet header the packet header */
- if (packet[0] == SOH) {
- ("SOH");
- } else {
- error ("xmodem: SOH is wrong");
- }
-
- /* check the sequence */
- if (packet[1] != 0) {
- lastseq = packet[1];
- if (packet[2] != ~lastseq)
- error ("xmodem: Sequence checksum is wrong");
- else
- printf_filtered (" %d %d", lastseq, ~lastseq);
- }
-
- /* check the data checksum */
- sum = 0;
- for (i = 3; i <= XMODEM_DATASIZE; i++) {
- sum += packet[i];
- }
-
- /* ignore the data */
-#if 0
- printf (" [128 bytes of data] %d\n", sum & 0xff);
-#endif
- printf_filtered (" [%s] %d\n", packet, sum & 0xff);
+ if (monitor_ops.to_magic != OPS_MAGIC)
+ init_base_monitor_ops ();
- if ((packet[XMODEM_PACKETSIZE] & 0xff) != (sum & 0xff)) {
- debuglogs (4, "xmodem: data checksum wrong, got a %d", packet[XMODEM_PACKETSIZE] & 0xff);
- }
- putchar ('\n');
+ memcpy (ops, &monitor_ops, sizeof monitor_ops);
}
-/*
- * _initialize_remote_monitors -- setup a few addtitional commands that
- * are usually only used by monitors.
- */
+/* Define additional commands that are usually only used by monitors. */
+
void
-_initialize_remote_monitors ()
+_initialize_remote_monitors (void)
{
- struct cmd_list_element *c;
-
- /* this sets the type of download protocol */
- c = add_set_cmd ("loadtype", no_class, var_string, (char *)&loadtype_str,
- "Set the type of the remote load protocol.\n", &setlist);
- c->function.sfunc = set_loadtype_command;
- add_show_from_set (c, &showlist);
- loadtype_str = savestring ("default", 8);
-
+ init_base_monitor_ops ();
add_show_from_set (add_set_cmd ("hash", no_class, var_boolean,
- (char *)&hashmark,
+ (char *) &hashmark,
"Set display of activity while downloading a file.\n\
-When enabled, a period \'.\' is displayed.",
- &setlist),
+When enabled, a hashmark \'#\' is displayed.",
+ &setlist),
&showlist);
- /* generic monitor command */
- add_com ("monitor", class_obscure, monitor_command,
- "Send a command to the debug monitor.");
+ add_show_from_set
+ (add_set_cmd ("monitor", no_class, var_zinteger,
+ (char *) &monitor_debug_p,
+ "Set debugging of remote monitor communication.\n\
+When enabled, communication between GDB and the remote monitor\n\
+is displayed.", &setdebuglist),
+ &showdebuglist);
}