/* Core dump and executable file functions above target vector, for GDB.
- Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994
- Free Software Foundation, Inc.
-This file is part of GDB.
+ Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1996, 1997,
+ 1998, 1999, 2000, 2001, 2003 Free Software Foundation, Inc.
-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 file is part of GDB.
-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 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.
-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 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "gdb_string.h"
#include <errno.h>
#include <signal.h>
#include <fcntl.h>
-#include "frame.h" /* required by inferior.h */
#include "inferior.h"
#include "symtab.h"
#include "command.h"
#include "target.h"
#include "gdbcore.h"
#include "dis-asm.h"
-#include "language.h"
+#include "gdb_stat.h"
+#include "completer.h"
+
+/* Local function declarations. */
+
+extern void _initialize_core (void);
+static void call_extra_exec_file_hooks (char *filename);
-extern char registers[];
+/* You can have any number of hooks for `exec_file_command' command to call.
+ If there's only one hook, it is set in exec_file_display hook.
+ If there are two or more hooks, they are set in exec_file_extra_hooks[],
+ and exec_file_display_hook is set to a function that calls all of them.
+ This extra complexity is needed to preserve compatibility with
+ old code that assumed that only one hook could be set, and which called
+ exec_file_display_hook directly. */
-/* Hook for `exec_file_command' command to call. */
+typedef void (*hook_type) (char *);
-void (*exec_file_display_hook) PARAMS ((char *)) = NULL;
+hook_type exec_file_display_hook; /* the original hook */
+static hook_type *exec_file_extra_hooks; /* array of additional hooks */
+static int exec_file_hook_count = 0; /* size of array */
/* Binary file diddling handle for the core file. */
bfd *core_bfd = NULL;
-
\f
+
/* Backward compatability with old way of specifying core files. */
void
-core_file_command (filename, from_tty)
- char *filename;
- int from_tty;
+core_file_command (char *filename, int from_tty)
{
struct target_ops *t;
- dont_repeat (); /* Either way, seems bogus. */
+ dont_repeat (); /* Either way, seems bogus. */
t = find_core_target ();
- if (t != NULL)
- if (!filename)
- (t->to_detach) (filename, from_tty);
- else
- (t->to_open) (filename, from_tty);
- else
+ if (t == NULL)
error ("GDB can't read core files on this machine.");
-}
+ if (!filename)
+ (t->to_detach) (filename, from_tty);
+ else
+ (t->to_open) (filename, from_tty);
+}
\f
+
+/* If there are two or more functions that wish to hook into exec_file_command,
+ * this function will call all of the hook functions. */
+
+static void
+call_extra_exec_file_hooks (char *filename)
+{
+ int i;
+
+ for (i = 0; i < exec_file_hook_count; i++)
+ (*exec_file_extra_hooks[i]) (filename);
+}
+
/* Call this to specify the hook for exec_file_command to call back.
This is called from the x-window display code. */
void
-specify_exec_file_hook (hook)
- void (*hook) PARAMS ((char *));
+specify_exec_file_hook (void (*hook) (char *))
{
- exec_file_display_hook = hook;
+ hook_type *new_array;
+
+ if (exec_file_display_hook != NULL)
+ {
+ /* There's already a hook installed. Arrange to have both it
+ * and the subsequent hooks called. */
+ if (exec_file_hook_count == 0)
+ {
+ /* If this is the first extra hook, initialize the hook array. */
+ exec_file_extra_hooks = (hook_type *) xmalloc (sizeof (hook_type));
+ exec_file_extra_hooks[0] = exec_file_display_hook;
+ exec_file_display_hook = call_extra_exec_file_hooks;
+ exec_file_hook_count = 1;
+ }
+
+ /* Grow the hook array by one and add the new hook to the end.
+ Yes, it's inefficient to grow it by one each time but since
+ this is hardly ever called it's not a big deal. */
+ exec_file_hook_count++;
+ new_array =
+ (hook_type *) xrealloc (exec_file_extra_hooks,
+ exec_file_hook_count * sizeof (hook_type));
+ exec_file_extra_hooks = new_array;
+ exec_file_extra_hooks[exec_file_hook_count - 1] = hook;
+ }
+ else
+ exec_file_display_hook = hook;
}
/* The exec file must be closed before running an inferior.
be reopened. */
void
-close_exec_file ()
+close_exec_file (void)
{
-#ifdef FIXME
+#if 0 /* FIXME */
if (exec_bfd)
bfd_tempclose (exec_bfd);
#endif
}
void
-reopen_exec_file ()
+reopen_exec_file (void)
{
-#ifdef FIXME
+#if 0 /* FIXME */
if (exec_bfd)
bfd_reopen (exec_bfd);
+#else
+ char *filename;
+ int res;
+ struct stat st;
+ long mtime;
+
+ /* Don't do anything if the current target isn't exec. */
+ if (exec_bfd == NULL || strcmp (target_shortname, "exec") != 0)
+ return;
+
+ /* If the timestamp of the exec file has changed, reopen it. */
+ filename = xstrdup (bfd_get_filename (exec_bfd));
+ make_cleanup (xfree, filename);
+ mtime = bfd_get_mtime (exec_bfd);
+ res = stat (filename, &st);
+
+ if (mtime && mtime != st.st_mtime)
+ {
+ exec_open (filename, 0);
+ }
#endif
}
\f
print a warning if they don't go together. */
void
-validate_files ()
+validate_files (void)
{
if (exec_bfd && core_bfd)
{
if (!core_file_matches_executable_p (core_bfd, exec_bfd))
warning ("core file may not match specified executable file.");
- else if (bfd_get_mtime(exec_bfd) > bfd_get_mtime(core_bfd))
+ else if (bfd_get_mtime (exec_bfd) > bfd_get_mtime (core_bfd))
warning ("exec file is newer than core file.");
}
}
otherwise return 0 in that case. */
char *
-get_exec_file (err)
- int err;
+get_exec_file (int err)
{
- if (exec_bfd) return bfd_get_filename(exec_bfd);
- if (!err) return NULL;
+ if (exec_bfd)
+ return bfd_get_filename (exec_bfd);
+ if (!err)
+ return NULL;
error ("No executable file specified.\n\
Use the \"file\" or \"exec-file\" command.");
return NULL;
}
-
\f
+
/* Report a memory error with error(). */
void
-memory_error (status, memaddr)
- int status;
- CORE_ADDR memaddr;
+memory_error (int status, CORE_ADDR memaddr)
{
+ struct ui_file *tmp_stream = mem_fileopen ();
+ make_cleanup_ui_file_delete (tmp_stream);
+
if (status == EIO)
{
/* Actually, address between memaddr and memaddr + len
- was out of bounds. */
- error_begin ();
- printf_filtered ("Cannot access memory at address ");
- print_address_numeric (memaddr, 1, gdb_stdout);
- printf_filtered (".\n");
- return_to_top_level (RETURN_ERROR);
+ was out of bounds. */
+ fprintf_unfiltered (tmp_stream, "Cannot access memory at address ");
+ print_address_numeric (memaddr, 1, tmp_stream);
}
else
{
- error_begin ();
- printf_filtered ("Error accessing memory address ");
- print_address_numeric (memaddr, 1, gdb_stdout);
- printf_filtered (": %s.\n",
- safe_strerror (status));
- return_to_top_level (RETURN_ERROR);
+ fprintf_filtered (tmp_stream, "Error accessing memory address ");
+ print_address_numeric (memaddr, 1, tmp_stream);
+ fprintf_filtered (tmp_stream, ": %s.",
+ safe_strerror (status));
}
+
+ error_stream (tmp_stream);
}
/* Same as target_read_memory, but report an error if can't read. */
void
-read_memory (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
+read_memory (CORE_ADDR memaddr, char *myaddr, int len)
{
int status;
status = target_read_memory (memaddr, myaddr, len);
memory_error (status, memaddr);
}
-/* Like target_read_memory, but slightly different parameters. */
+/* Argument / return result struct for use with
+ do_captured_read_memory_integer(). MEMADDR and LEN are filled in
+ by gdb_read_memory_integer(). RESULT is the contents that were
+ successfully read from MEMADDR of length LEN. */
+
+struct captured_read_memory_integer_arguments
+{
+ CORE_ADDR memaddr;
+ int len;
+ LONGEST result;
+};
+
+/* Helper function for gdb_read_memory_integer(). DATA must be a
+ pointer to a captured_read_memory_integer_arguments struct.
+ Return 1 if successful. Note that the catch_errors() interface
+ will return 0 if an error occurred while reading memory. This
+ choice of return code is so that we can distinguish between
+ success and failure. */
+
+static int
+do_captured_read_memory_integer (void *data)
+{
+ struct captured_read_memory_integer_arguments *args = (struct captured_read_memory_integer_arguments*) data;
+ CORE_ADDR memaddr = args->memaddr;
+ int len = args->len;
+
+ args->result = read_memory_integer (memaddr, len);
+
+ return 1;
+}
+
+/* Read memory at MEMADDR of length LEN and put the contents in
+ RETURN_VALUE. Return 0 if MEMADDR couldn't be read and non-zero
+ if successful. */
int
-dis_asm_read_memory (memaddr, myaddr, len, info)
- bfd_vma memaddr;
- bfd_byte *myaddr;
- int len;
- disassemble_info *info;
+safe_read_memory_integer (CORE_ADDR memaddr, int len, LONGEST *return_value)
{
- return target_read_memory (memaddr, (char *) myaddr, len);
+ int status;
+ struct captured_read_memory_integer_arguments args;
+ args.memaddr = memaddr;
+ args.len = len;
+
+ status = catch_errors (do_captured_read_memory_integer, &args,
+ "", RETURN_MASK_ALL);
+ if (status)
+ *return_value = args.result;
+
+ return status;
}
-/* Like memory_error with slightly different parameters. */
-void
-dis_asm_memory_error (status, memaddr, info)
- int status;
- bfd_vma memaddr;
- disassemble_info *info;
+LONGEST
+read_memory_integer (CORE_ADDR memaddr, int len)
+{
+ char buf[sizeof (LONGEST)];
+
+ read_memory (memaddr, buf, len);
+ return extract_signed_integer (buf, len);
+}
+
+ULONGEST
+read_memory_unsigned_integer (CORE_ADDR memaddr, int len)
{
- memory_error (status, memaddr);
+ char buf[sizeof (ULONGEST)];
+
+ read_memory (memaddr, buf, len);
+ return extract_unsigned_integer (buf, len);
}
-/* Like print_address with slightly different parameters. */
void
-dis_asm_print_address (addr, info)
- bfd_vma addr;
- struct disassemble_info *info;
+read_memory_string (CORE_ADDR memaddr, char *buffer, int max_len)
{
- print_address (addr, info->stream);
+ char *cp;
+ int i;
+ int cnt;
+
+ cp = buffer;
+ while (1)
+ {
+ if (cp - buffer >= max_len)
+ {
+ buffer[max_len - 1] = '\0';
+ break;
+ }
+ cnt = max_len - (cp - buffer);
+ if (cnt > 8)
+ cnt = 8;
+ read_memory (memaddr + (int) (cp - buffer), cp, cnt);
+ for (i = 0; i < cnt && *cp; i++, cp++)
+ ; /* null body */
+
+ if (i < cnt && !*cp)
+ break;
+ }
+}
+
+CORE_ADDR
+read_memory_typed_address (CORE_ADDR addr, struct type *type)
+{
+ char *buf = alloca (TYPE_LENGTH (type));
+ read_memory (addr, buf, TYPE_LENGTH (type));
+ return extract_typed_address (buf, type);
}
/* Same as target_write_memory, but report an error if can't write. */
void
-write_memory (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
+write_memory (CORE_ADDR memaddr, char *myaddr, int len)
{
int status;
memory_error (status, memaddr);
}
-/* Read an integer from debugged memory, given address and number of bytes. */
-
-LONGEST
-read_memory_integer (memaddr, len)
- CORE_ADDR memaddr;
- int len;
+/* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */
+void
+write_memory_unsigned_integer (CORE_ADDR addr, int len, ULONGEST value)
{
- char buf[sizeof (LONGEST)];
-
- read_memory (memaddr, buf, len);
- return extract_signed_integer (buf, len);
+ char *buf = alloca (len);
+ store_unsigned_integer (buf, len, value);
+ write_memory (addr, buf, len);
}
-unsigned LONGEST
-read_memory_unsigned_integer (memaddr, len)
- CORE_ADDR memaddr;
- int len;
+/* Store VALUE at ADDR in the inferior as a LEN-byte signed integer. */
+void
+write_memory_signed_integer (CORE_ADDR addr, int len, LONGEST value)
{
- char buf[sizeof (unsigned LONGEST)];
-
- read_memory (memaddr, buf, len);
- return extract_unsigned_integer (buf, len);
+ char *buf = alloca (len);
+ store_signed_integer (buf, len, value);
+ write_memory (addr, buf, len);
}
+
\f
+
#if 0
/* Enable after 4.12. It is not tested. */
if the protocol has a less general search function, they can call this
in the cases it can't handle. */
void
-generic_search (len, data, mask, startaddr, increment, lorange, hirange
- addr_found, data_found)
- int len;
- char *data;
- char *mask;
- CORE_ADDR startaddr;
- int increment;
- CORE_ADDR lorange;
- CORE_ADDR hirange;
- CORE_ADDR *addr_found;
- char *data_found;
+generic_search (int len, char *data, char *mask, CORE_ADDR startaddr,
+ int increment, CORE_ADDR lorange, CORE_ADDR hirange,
+ CORE_ADDR *addr_found, char *data_found)
{
int i;
CORE_ADDR curaddr = startaddr;
try_again:
curaddr += increment;
}
- *addr_found = (CORE_ADDR)0;
+ *addr_found = (CORE_ADDR) 0;
return;
}
#endif /* 0 */
/* Same thing, except it is "auto" not NULL for the default case. */
static char *gnutarget_string;
-static void set_gnutarget_command
- PARAMS ((char *, int, struct cmd_list_element *));
+static void set_gnutarget_command (char *, int, struct cmd_list_element *);
static void
-set_gnutarget_command (ignore, from_tty, c)
- char *ignore;
- int from_tty;
- struct cmd_list_element *c;
+set_gnutarget_command (char *ignore, int from_tty, struct cmd_list_element *c)
{
- if (STREQ (gnutarget_string, "auto"))
+ if (strcmp (gnutarget_string, "auto") == 0)
gnutarget = NULL;
else
gnutarget = gnutarget_string;
/* Set the gnutarget. */
void
-set_gnutarget (newtarget)
- char *newtarget;
+set_gnutarget (char *newtarget)
{
if (gnutarget_string != NULL)
- free (gnutarget_string);
+ xfree (gnutarget_string);
gnutarget_string = savestring (newtarget, strlen (newtarget));
set_gnutarget_command (NULL, 0, NULL);
}
void
-_initialize_core()
+_initialize_core (void)
{
struct cmd_list_element *c;
c = add_cmd ("core-file", class_files, core_file_command,
"Use FILE as core dump for examining memory and registers.\n\
No arg means have no core file. This command has been superseded by the\n\
`target core' and `detach' commands.", &cmdlist);
- c->completer = filename_completer;
+ set_cmd_completer (c, filename_completer);
c = add_set_cmd ("gnutarget", class_files, var_string_noescape,
- (char *) &gnutarget_string,
- "Set the current BFD target.\n\
+ (char *) &gnutarget_string,
+ "Set the current BFD target.\n\
Use `set gnutarget auto' to specify automatic detection.",
- &setlist);
- c->function.sfunc = set_gnutarget_command;
+ &setlist);
+ set_cmd_sfunc (c, set_gnutarget_command);
add_show_from_set (c, &showlist);
if (getenv ("GNUTARGET"))