/* Remote debugging interface for boot monitors, for GDB.
- Copyright 1990, 1991, 1992, 1993, 1995, 1996, 1997, 1999
- Free Software Foundation, Inc.
+ Copyright 1990-1993, 1995-1997, 1999-2000, 2001 Free Software Foundation, Inc.
Contributed by Cygnus Support. Written by Rob Savoye for Cygnus.
Resurrected from the ashes by Stu Grossman.
/* 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
monitor. This saves use from having to hack an exception based handler
- into existance, and makes for quick porting.
+ into existence, and makes for quick porting.
This module talks to a debug monitor called 'MONITOR', which
We communicate with MONITOR via either a direct serial line, or a TCP
#include "defs.h"
#include "gdbcore.h"
#include "target.h"
-#include "wait.h"
#include <signal.h>
#include <ctype.h>
#include "gdb_string.h"
#include "monitor.h"
#include "gdbcmd.h"
#include "inferior.h"
-#include "gnu-regex.h"
-#include "dcache.h"
+#include "gdb_regex.h"
#include "srec.h"
+#include "regcache.h"
static char *dev_name;
static struct target_ops *targ_ops;
-static void monitor_vsprintf PARAMS ((char *sndbuf, char *pattern, va_list args));
+static void monitor_vsprintf (char *sndbuf, char *pattern, va_list args);
-static int readchar PARAMS ((int timeout));
+static int readchar (int timeout);
-static void monitor_fetch_register PARAMS ((int regno));
-static void monitor_store_register PARAMS ((int regno));
+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 PARAMS ((char *args, int from_tty));
-static void monitor_resume PARAMS ((int pid, int step, enum target_signal sig));
-static void monitor_interrupt PARAMS ((int signo));
-static void monitor_interrupt_twice PARAMS ((int signo));
-static void monitor_interrupt_query PARAMS ((void));
-static void monitor_wait_cleanup PARAMS ((void *old_timeout));
-
-static int monitor_wait PARAMS ((int pid, struct target_waitstatus * status));
-static void monitor_fetch_registers PARAMS ((int regno));
-static void monitor_store_registers PARAMS ((int regno));
-static void monitor_prepare_to_store PARAMS ((void));
-static int monitor_xfer_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, int len, int write, struct target_ops * target));
-static void monitor_files_info PARAMS ((struct target_ops * ops));
-static int monitor_insert_breakpoint PARAMS ((CORE_ADDR addr, char *shadow));
-static int monitor_remove_breakpoint PARAMS ((CORE_ADDR addr, char *shadow));
-static void monitor_kill PARAMS ((void));
-static void monitor_load PARAMS ((char *file, int from_tty));
-static void monitor_mourn_inferior PARAMS ((void));
-static void monitor_stop PARAMS ((void));
-
-static int monitor_read_memory PARAMS ((CORE_ADDR addr, char *myaddr, int len));
-static int monitor_write_memory PARAMS ((CORE_ADDR addr, char *myaddr, int len));
-static int monitor_write_memory_bytes PARAMS ((CORE_ADDR addr,
- char *myaddr, int len));
-static int monitor_write_memory_block PARAMS ((
- CORE_ADDR memaddr,
- char *myaddr,
- int len));
-static int monitor_expect_regexp PARAMS ((struct re_pattern_buffer * pat,
- char *buf, int buflen));
-static void monitor_dump_regs PARAMS ((void));
+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 mem_attrib *attrib,
+ 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 PARAMS ((int a));
-static unsigned long get_hex_word PARAMS ((void));
+static int from_hex (int a);
+static unsigned long get_hex_word (void);
#endif
-static void parse_register_dump PARAMS ((char *, int));
+static void parse_register_dump (char *, int);
static struct monitor_ops *current_monitor;
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? */
/* Convert hex digit A to a number. */
static int
-fromhex (a)
- int a;
+fromhex (int a)
{
if (a >= '0' && a <= '9')
return a - '0';
*/
static void
-monitor_vsprintf (sndbuf, pattern, args)
- char *sndbuf;
- char *pattern;
- va_list args;
+monitor_vsprintf (char *sndbuf, char *pattern, va_list args)
{
char format[10];
char fmt;
len = strlen (sndbuf);
if (len + 1 > sizeof sndbuf)
- abort ();
+ internal_error (__FILE__, __LINE__, "failed internal consistency check");
if (monitor_debug_p)
{
len = strlen (sndbuf);
if (len + 1 > sizeof sndbuf)
- abort ();
+ internal_error (__FILE__, __LINE__, "failed internal consistency check");
if (monitor_debug_p)
{
/* Write characters to the remote system. */
void
-monitor_write (buf, buflen)
- char *buf;
- int buflen;
+monitor_write (char *buf, int buflen)
{
if (SERIAL_WRITE (monitor_desc, buf, buflen))
fprintf_unfiltered (gdb_stderr, "SERIAL_WRITE failed: %s\n",
and without printing remote debug information. */
int
-monitor_readchar ()
+monitor_readchar (void)
{
int c;
int looping;
timeout stuff. */
static int
-readchar (timeout)
- int timeout;
+readchar (int timeout)
{
int c;
static enum
will be at the end of BUF. */
int
-monitor_expect (string, buf, buflen)
- char *string;
- char *buf;
- int buflen;
+monitor_expect (char *string, char *buf, int buflen)
{
char *p = string;
int obuflen = buflen;
fprintf_unfiltered (gdb_stdlog, "MON Expecting '%s'\n", safe_string);
}
- immediate_quit = 1;
+ immediate_quit++;
while (1)
{
if (buf)
if (buflen < 2)
{
*buf = '\000';
- immediate_quit = 0;
+ immediate_quit--;
return -1;
}
p++;
if (*p == '\0')
{
- immediate_quit = 0;
+ immediate_quit--;
if (buf)
{
/* Search for a regexp. */
static int
-monitor_expect_regexp (pat, buf, buflen)
- struct re_pattern_buffer *pat;
- char *buf;
- int buflen;
+monitor_expect_regexp (struct re_pattern_buffer *pat, char *buf, int buflen)
{
char *mybuf;
char *p;
getting into states from which we can't recover. */
int
-monitor_expect_prompt (buf, buflen)
- char *buf;
- int buflen;
+monitor_expect_prompt (char *buf, int buflen)
{
monitor_debug ("MON Expecting prompt\n");
return monitor_expect (current_monitor->prompt, buf, buflen);
#if 0
static unsigned long
-get_hex_word ()
+get_hex_word (void)
{
unsigned long val;
int i;
#endif
static void
-compile_pattern (pattern, compiled_pattern, fastmap)
- char *pattern;
- struct re_pattern_buffer *compiled_pattern;
- char *fastmap;
+compile_pattern (char *pattern, struct re_pattern_buffer *compiled_pattern,
+ char *fastmap)
{
int tmp;
const char *val;
for communication. */
void
-monitor_open (args, mon_ops, from_tty)
- char *args;
- struct monitor_ops *mon_ops;
- int from_tty;
+monitor_open (char *args, struct monitor_ops *mon_ops, int from_tty)
{
char *name;
char **p;
unpush_target (targ_ops);
if (dev_name)
- free (dev_name);
- dev_name = strsave (args);
+ xfree (dev_name);
+ dev_name = xstrdup (args);
monitor_desc = SERIAL_OPEN (dev_name);
monitor_printf (current_monitor->line_term);
- 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);
start_remote ();
}
control. */
void
-monitor_close (quitting)
- int quitting;
+monitor_close (int quitting)
{
if (monitor_desc)
SERIAL_CLOSE (monitor_desc);
/* Free breakpoint memory */
if (breakaddr != NULL)
{
- free (breakaddr);
+ xfree (breakaddr);
breakaddr = NULL;
}
when you want to detach and do something else with your gdb. */
static void
-monitor_detach (args, from_tty)
- char *args;
- int from_tty;
+monitor_detach (char *args, int from_tty)
{
pop_target (); /* calls monitor_close to do the real work */
if (from_tty)
/* Convert VALSTR into the target byte-ordered value of REGNO and store it. */
char *
-monitor_supply_register (regno, valstr)
- int regno;
- char *valstr;
+monitor_supply_register (int regno, char *valstr)
{
ULONGEST val;
unsigned char regbuf[MAX_REGISTER_RAW_SIZE];
/* Tell the remote machine to resume. */
-void
-flush_monitor_dcache ()
-{
- dcache_flush (remote_dcache);
-}
-
static void
-monitor_resume (pid, step, sig)
- int pid, step;
- enum target_signal sig;
+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");
dump_reg_flag = 1;
return;
}
- dcache_flush (remote_dcache);
if (step)
monitor_printf (current_monitor->step);
else
string which are passed down to monitor specific code. */
static void
-parse_register_dump (buf, len)
- char *buf;
- int len;
+parse_register_dump (char *buf, int len)
{
monitor_debug ("MON Parsing register dump\n");
while (1)
packet. */
static void
-monitor_interrupt (signo)
- int signo;
+monitor_interrupt (int signo)
{
/* If this doesn't work, try more severe steps. */
signal (signo, monitor_interrupt_twice);
/* The user typed ^C twice. */
static void
-monitor_interrupt_twice (signo)
- int signo;
+monitor_interrupt_twice (int signo)
{
signal (signo, ofunc);
/* Ask the user what to do when an interrupt is received. */
static void
-monitor_interrupt_query ()
+monitor_interrupt_query (void)
{
target_terminal_ours ();
}
static void
-monitor_wait_cleanup (old_timeout)
- void *old_timeout;
+monitor_wait_cleanup (void *old_timeout)
{
timeout = *(int *) old_timeout;
signal (SIGINT, ofunc);
status just as `wait' would. */
static int
-monitor_wait (pid, status)
- int pid;
- struct target_waitstatus *status;
+monitor_wait (int pid, struct target_waitstatus *status)
{
int old_timeout = timeout;
char buf[TARGET_BUF_SIZE];
errno value. */
static void
-monitor_fetch_register (regno)
- int regno;
+monitor_fetch_register (int regno)
{
char *name;
- static char zerobuf[MAX_REGISTER_RAW_SIZE] =
- {0};
- char regbuf[MAX_REGISTER_RAW_SIZE * 2 + 1];
+ 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)");
/* Call the specific function if it has been provided */
static void
-monitor_dump_regs ()
+monitor_dump_regs (void)
{
char buf[TARGET_BUF_SIZE];
int resp_len;
parse_register_dump (buf, resp_len);
}
else
- abort (); /* Need some way to read registers */
+ internal_error (__FILE__, __LINE__, "failed internal consistency check"); /* Need some way to read registers */
}
static void
-monitor_fetch_registers (regno)
- int regno;
+monitor_fetch_registers (int regno)
{
monitor_debug ("MON fetchregs\n");
if (current_monitor->getreg.cmd)
/* Store register REGNO, or all if REGNO == 0. Return errno value. */
static void
-monitor_store_register (regno)
- int regno;
+monitor_store_register (int regno)
{
char *name;
ULONGEST val;
}
val = read_register (regno);
- monitor_debug ("MON storeg %d %s\n", regno, preg (val));
+ monitor_debug ("MON storeg %d %s\n", regno,
+ phex (val, REGISTER_RAW_SIZE (regno)));
/* send the register deposit command */
/* Store the remote registers. */
static void
-monitor_store_registers (regno)
- int regno;
+monitor_store_registers (int regno)
{
if (regno >= 0)
{
debugged. */
static void
-monitor_prepare_to_store ()
+monitor_prepare_to_store (void)
{
/* Do nothing, since we can store individual regs */
}
static void
-monitor_files_info (ops)
- struct target_ops *ops;
+monitor_files_info (struct target_ops *ops)
{
printf_unfiltered ("\tAttached to %s at %d baud.\n", dev_name, baud_rate);
}
static int
-monitor_write_memory (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
+monitor_write_memory (CORE_ADDR memaddr, char *myaddr, int len)
{
unsigned int val, hostval;
char *cmd;
static int
-monitor_write_even_block (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
+monitor_write_even_block (CORE_ADDR memaddr, char *myaddr, int len)
{
unsigned int val;
int written = 0;;
static int
-monitor_write_memory_bytes (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
+monitor_write_memory_bytes (CORE_ADDR memaddr, char *myaddr, int len)
{
unsigned char val;
int written = 0;
Which possably entails endian conversions
*/
static int
-monitor_write_memory_longlongs (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
+monitor_write_memory_longlongs (CORE_ADDR memaddr, char *myaddr, int len)
{
static char hexstage[20]; /* At least 16 digits required, plus null */
char *endstring;
*/
static int
-monitor_write_memory_block (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
+monitor_write_memory_block (CORE_ADDR memaddr, char *myaddr, int len)
{
int written;
written = 0;
which can only read a single byte/word/etc. at a time. */
static int
-monitor_read_memory_single (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
+monitor_read_memory_single (CORE_ADDR memaddr, char *myaddr, int len)
{
unsigned int val;
char membuf[sizeof (int) * 2 + 1];
than 16 bytes at a time. */
static int
-monitor_read_memory (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
+monitor_read_memory (CORE_ADDR memaddr, char *myaddr, int len)
{
unsigned int val;
char buf[512];
return len;
}
+/* Transfer LEN bytes between target address MEMADDR and GDB address
+ MYADDR. Returns 0 for success, errno code for failure. TARGET is
+ unused. */
+
static int
-monitor_xfer_memory (memaddr, myaddr, len, write, target)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
- int write;
- struct target_ops *target; /* ignored */
+monitor_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
+ struct mem_attrib *attrib ATTRIBUTE_UNUSED,
+ struct target_ops *target ATTRIBUTE_UNUSED)
{
- return dcache_xfer_memory (remote_dcache, memaddr, myaddr, len, write);
+ int res;
+
+ if (write)
+ {
+ if (current_monitor->flags & MO_HAS_BLOCKWRITES)
+ res = monitor_write_memory_block(memaddr, myaddr, len);
+ else
+ res = monitor_write_memory(memaddr, myaddr, len);
+ }
+ else
+ {
+ res = monitor_read_memory(memaddr, myaddr, len);
+ }
+
+ return res;
}
static void
-monitor_kill ()
+monitor_kill (void)
{
return; /* ignore attempts to kill target system */
}
the program at that point. */
static void
-monitor_create_inferior (exec_file, args, env)
- char *exec_file;
- char *args;
- char **env;
+monitor_create_inferior (char *exec_file, char *args, char **env)
{
if (args && (*args != '\000'))
error ("Args are not supported by the monitor.");
instructions. */
static void
-monitor_mourn_inferior ()
+monitor_mourn_inferior (void)
{
unpush_target (targ_ops);
generic_mourn_inferior (); /* Do all the proper things now */
/* Tell the monitor to add a breakpoint. */
static int
-monitor_insert_breakpoint (addr, shadow)
- CORE_ADDR addr;
- char *shadow;
+monitor_insert_breakpoint (CORE_ADDR addr, char *shadow)
{
int i;
unsigned char *bp;
/* Tell the monitor to remove a breakpoint. */
static int
-monitor_remove_breakpoint (addr, shadow)
- CORE_ADDR addr;
- char *shadow;
+monitor_remove_breakpoint (CORE_ADDR addr, char *shadow)
{
int i;
an S-record. Return non-zero if the ACK is received properly. */
static int
-monitor_wait_srec_ack ()
+monitor_wait_srec_ack (void)
{
int ch;
/* monitor_load -- download a file. */
static void
-monitor_load (file, from_tty)
- char *file;
- int from_tty;
+monitor_load (char *file, int from_tty)
{
- dcache_flush (remote_dcache);
monitor_debug ("MON load\n");
if (current_monitor->load_routine)
}
static void
-monitor_stop ()
+monitor_stop (void)
{
monitor_debug ("MON stop\n");
if ((current_monitor->flags & MO_SEND_BREAK_ON_STOP) != 0)
static void
monitor_rcmd (char *command,
- struct gdb_file *outbuf)
+ struct ui_file *outbuf)
{
char *p;
int resp_len;
#if 0
static int
-from_hex (a)
- int a;
+from_hex (int a)
{
if (a >= '0' && a <= '9')
return a - '0';
#endif
char *
-monitor_get_dev_name ()
+monitor_get_dev_name (void)
{
return dev_name;
}
/* Init the target_ops structure pointed at by OPS */
void
-init_monitor_ops (ops)
- struct target_ops *ops;
+init_monitor_ops (struct target_ops *ops)
{
if (monitor_ops.to_magic != OPS_MAGIC)
init_base_monitor_ops ();
/* Define additional commands that are usually only used by monitors. */
void
-_initialize_remote_monitors ()
+_initialize_remote_monitors (void)
{
init_base_monitor_ops ();
add_show_from_set (add_set_cmd ("hash", no_class, var_boolean,
&setlist),
&showlist);
-#if 0
- /* FIXME: cagney/1999-10-07: Wait until there is a generic ``set
- debug ...'' rather than another ``set ...debug'' command. */
add_show_from_set
- (add_set_cmd ("monitordebug", no_class, var_zinteger,
+ (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.", &setlist),
- &showlist);
-#endif
+is displayed.", &setdebuglist),
+ &showdebuglist);
}
projects / deliverable / binutils-gdb.git / blobdiff