e623b5041f
* defs.h (xstrvprintf): Declare. * utils.c (xstrvprintf): New function. (internal_vproblem, xstrprintf, xasprintf) (vfprintf_maybe_filtered, vfprintf_unfiltered): Use xstrvprintf. * serial.c (serial_printf): Ditto. * complaints.c (vcomplaint): Ditto.
3075 lines
79 KiB
C
3075 lines
79 KiB
C
/* General utility routines for GDB, the GNU debugger.
|
||
|
||
Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
|
||
1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software
|
||
Foundation, Inc.
|
||
|
||
This file is part of GDB.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 2 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, Inc., 59 Temple Place - Suite 330,
|
||
Boston, MA 02111-1307, USA. */
|
||
|
||
#include "defs.h"
|
||
#include "gdb_assert.h"
|
||
#include <ctype.h>
|
||
#include "gdb_string.h"
|
||
#include "event-top.h"
|
||
|
||
#ifdef TUI
|
||
#include "tui/tui.h" /* For tui_get_command_dimension. */
|
||
#endif
|
||
|
||
#ifdef __GO32__
|
||
#include <pc.h>
|
||
#endif
|
||
|
||
/* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
|
||
#ifdef reg
|
||
#undef reg
|
||
#endif
|
||
|
||
#include <signal.h>
|
||
#include "gdbcmd.h"
|
||
#include "serial.h"
|
||
#include "bfd.h"
|
||
#include "target.h"
|
||
#include "demangle.h"
|
||
#include "expression.h"
|
||
#include "language.h"
|
||
#include "charset.h"
|
||
#include "annotate.h"
|
||
#include "filenames.h"
|
||
|
||
#include "inferior.h" /* for signed_pointer_to_address */
|
||
|
||
#include <sys/param.h> /* For MAXPATHLEN */
|
||
|
||
#ifdef HAVE_CURSES_H
|
||
#include <curses.h>
|
||
#endif
|
||
#ifdef HAVE_TERM_H
|
||
#include <term.h>
|
||
#endif
|
||
|
||
#include "readline/readline.h"
|
||
|
||
#ifdef NEED_DECLARATION_MALLOC
|
||
extern PTR malloc (); /* OK: PTR */
|
||
#endif
|
||
#ifdef NEED_DECLARATION_REALLOC
|
||
extern PTR realloc (); /* OK: PTR */
|
||
#endif
|
||
#ifdef NEED_DECLARATION_FREE
|
||
extern void free ();
|
||
#endif
|
||
/* Actually, we'll never have the decl, since we don't define _GNU_SOURCE. */
|
||
#if defined(HAVE_CANONICALIZE_FILE_NAME) \
|
||
&& defined(NEED_DECLARATION_CANONICALIZE_FILE_NAME)
|
||
extern char *canonicalize_file_name (const char *);
|
||
#endif
|
||
|
||
/* readline defines this. */
|
||
#undef savestring
|
||
|
||
void (*deprecated_error_begin_hook) (void);
|
||
|
||
/* Holds the last error message issued by gdb */
|
||
|
||
static struct ui_file *gdb_lasterr;
|
||
|
||
/* Prototypes for local functions */
|
||
|
||
static void vfprintf_maybe_filtered (struct ui_file *, const char *,
|
||
va_list, int);
|
||
|
||
static void fputs_maybe_filtered (const char *, struct ui_file *, int);
|
||
|
||
static void do_my_cleanups (struct cleanup **, struct cleanup *);
|
||
|
||
static void prompt_for_continue (void);
|
||
|
||
static void set_screen_size (void);
|
||
static void set_width (void);
|
||
|
||
/* Chain of cleanup actions established with make_cleanup,
|
||
to be executed if an error happens. */
|
||
|
||
static struct cleanup *cleanup_chain; /* cleaned up after a failed command */
|
||
static struct cleanup *final_cleanup_chain; /* cleaned up when gdb exits */
|
||
static struct cleanup *run_cleanup_chain; /* cleaned up on each 'run' */
|
||
static struct cleanup *exec_cleanup_chain; /* cleaned up on each execution command */
|
||
/* cleaned up on each error from within an execution command */
|
||
static struct cleanup *exec_error_cleanup_chain;
|
||
|
||
/* Pointer to what is left to do for an execution command after the
|
||
target stops. Used only in asynchronous mode, by targets that
|
||
support async execution. The finish and until commands use it. So
|
||
does the target extended-remote command. */
|
||
struct continuation *cmd_continuation;
|
||
struct continuation *intermediate_continuation;
|
||
|
||
/* Nonzero if we have job control. */
|
||
|
||
int job_control;
|
||
|
||
/* Nonzero means a quit has been requested. */
|
||
|
||
int quit_flag;
|
||
|
||
/* Nonzero means quit immediately if Control-C is typed now, rather
|
||
than waiting until QUIT is executed. Be careful in setting this;
|
||
code which executes with immediate_quit set has to be very careful
|
||
about being able to deal with being interrupted at any time. It is
|
||
almost always better to use QUIT; the only exception I can think of
|
||
is being able to quit out of a system call (using EINTR loses if
|
||
the SIGINT happens between the previous QUIT and the system call).
|
||
To immediately quit in the case in which a SIGINT happens between
|
||
the previous QUIT and setting immediate_quit (desirable anytime we
|
||
expect to block), call QUIT after setting immediate_quit. */
|
||
|
||
int immediate_quit;
|
||
|
||
/* Nonzero means that encoded C++/ObjC names should be printed out in their
|
||
C++/ObjC form rather than raw. */
|
||
|
||
int demangle = 1;
|
||
|
||
/* Nonzero means that encoded C++/ObjC names should be printed out in their
|
||
C++/ObjC form even in assembler language displays. If this is set, but
|
||
DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
|
||
|
||
int asm_demangle = 0;
|
||
|
||
/* Nonzero means that strings with character values >0x7F should be printed
|
||
as octal escapes. Zero means just print the value (e.g. it's an
|
||
international character, and the terminal or window can cope.) */
|
||
|
||
int sevenbit_strings = 0;
|
||
|
||
/* String to be printed before error messages, if any. */
|
||
|
||
char *error_pre_print;
|
||
|
||
/* String to be printed before quit messages, if any. */
|
||
|
||
char *quit_pre_print;
|
||
|
||
/* String to be printed before warning messages, if any. */
|
||
|
||
char *warning_pre_print = "\nwarning: ";
|
||
|
||
int pagination_enabled = 1;
|
||
|
||
|
||
/* Add a new cleanup to the cleanup_chain,
|
||
and return the previous chain pointer
|
||
to be passed later to do_cleanups or discard_cleanups.
|
||
Args are FUNCTION to clean up with, and ARG to pass to it. */
|
||
|
||
struct cleanup *
|
||
make_cleanup (make_cleanup_ftype *function, void *arg)
|
||
{
|
||
return make_my_cleanup (&cleanup_chain, function, arg);
|
||
}
|
||
|
||
struct cleanup *
|
||
make_final_cleanup (make_cleanup_ftype *function, void *arg)
|
||
{
|
||
return make_my_cleanup (&final_cleanup_chain, function, arg);
|
||
}
|
||
|
||
struct cleanup *
|
||
make_run_cleanup (make_cleanup_ftype *function, void *arg)
|
||
{
|
||
return make_my_cleanup (&run_cleanup_chain, function, arg);
|
||
}
|
||
|
||
struct cleanup *
|
||
make_exec_cleanup (make_cleanup_ftype *function, void *arg)
|
||
{
|
||
return make_my_cleanup (&exec_cleanup_chain, function, arg);
|
||
}
|
||
|
||
struct cleanup *
|
||
make_exec_error_cleanup (make_cleanup_ftype *function, void *arg)
|
||
{
|
||
return make_my_cleanup (&exec_error_cleanup_chain, function, arg);
|
||
}
|
||
|
||
static void
|
||
do_freeargv (void *arg)
|
||
{
|
||
freeargv ((char **) arg);
|
||
}
|
||
|
||
struct cleanup *
|
||
make_cleanup_freeargv (char **arg)
|
||
{
|
||
return make_my_cleanup (&cleanup_chain, do_freeargv, arg);
|
||
}
|
||
|
||
static void
|
||
do_bfd_close_cleanup (void *arg)
|
||
{
|
||
bfd_close (arg);
|
||
}
|
||
|
||
struct cleanup *
|
||
make_cleanup_bfd_close (bfd *abfd)
|
||
{
|
||
return make_cleanup (do_bfd_close_cleanup, abfd);
|
||
}
|
||
|
||
static void
|
||
do_close_cleanup (void *arg)
|
||
{
|
||
int *fd = arg;
|
||
close (*fd);
|
||
xfree (fd);
|
||
}
|
||
|
||
struct cleanup *
|
||
make_cleanup_close (int fd)
|
||
{
|
||
int *saved_fd = xmalloc (sizeof (fd));
|
||
*saved_fd = fd;
|
||
return make_cleanup (do_close_cleanup, saved_fd);
|
||
}
|
||
|
||
static void
|
||
do_ui_file_delete (void *arg)
|
||
{
|
||
ui_file_delete (arg);
|
||
}
|
||
|
||
struct cleanup *
|
||
make_cleanup_ui_file_delete (struct ui_file *arg)
|
||
{
|
||
return make_my_cleanup (&cleanup_chain, do_ui_file_delete, arg);
|
||
}
|
||
|
||
struct cleanup *
|
||
make_my_cleanup (struct cleanup **pmy_chain, make_cleanup_ftype *function,
|
||
void *arg)
|
||
{
|
||
struct cleanup *new
|
||
= (struct cleanup *) xmalloc (sizeof (struct cleanup));
|
||
struct cleanup *old_chain = *pmy_chain;
|
||
|
||
new->next = *pmy_chain;
|
||
new->function = function;
|
||
new->arg = arg;
|
||
*pmy_chain = new;
|
||
|
||
return old_chain;
|
||
}
|
||
|
||
/* Discard cleanups and do the actions they describe
|
||
until we get back to the point OLD_CHAIN in the cleanup_chain. */
|
||
|
||
void
|
||
do_cleanups (struct cleanup *old_chain)
|
||
{
|
||
do_my_cleanups (&cleanup_chain, old_chain);
|
||
}
|
||
|
||
void
|
||
do_final_cleanups (struct cleanup *old_chain)
|
||
{
|
||
do_my_cleanups (&final_cleanup_chain, old_chain);
|
||
}
|
||
|
||
void
|
||
do_run_cleanups (struct cleanup *old_chain)
|
||
{
|
||
do_my_cleanups (&run_cleanup_chain, old_chain);
|
||
}
|
||
|
||
void
|
||
do_exec_cleanups (struct cleanup *old_chain)
|
||
{
|
||
do_my_cleanups (&exec_cleanup_chain, old_chain);
|
||
}
|
||
|
||
void
|
||
do_exec_error_cleanups (struct cleanup *old_chain)
|
||
{
|
||
do_my_cleanups (&exec_error_cleanup_chain, old_chain);
|
||
}
|
||
|
||
static void
|
||
do_my_cleanups (struct cleanup **pmy_chain,
|
||
struct cleanup *old_chain)
|
||
{
|
||
struct cleanup *ptr;
|
||
while ((ptr = *pmy_chain) != old_chain)
|
||
{
|
||
*pmy_chain = ptr->next; /* Do this first incase recursion */
|
||
(*ptr->function) (ptr->arg);
|
||
xfree (ptr);
|
||
}
|
||
}
|
||
|
||
/* Discard cleanups, not doing the actions they describe,
|
||
until we get back to the point OLD_CHAIN in the cleanup_chain. */
|
||
|
||
void
|
||
discard_cleanups (struct cleanup *old_chain)
|
||
{
|
||
discard_my_cleanups (&cleanup_chain, old_chain);
|
||
}
|
||
|
||
void
|
||
discard_final_cleanups (struct cleanup *old_chain)
|
||
{
|
||
discard_my_cleanups (&final_cleanup_chain, old_chain);
|
||
}
|
||
|
||
void
|
||
discard_exec_error_cleanups (struct cleanup *old_chain)
|
||
{
|
||
discard_my_cleanups (&exec_error_cleanup_chain, old_chain);
|
||
}
|
||
|
||
void
|
||
discard_my_cleanups (struct cleanup **pmy_chain,
|
||
struct cleanup *old_chain)
|
||
{
|
||
struct cleanup *ptr;
|
||
while ((ptr = *pmy_chain) != old_chain)
|
||
{
|
||
*pmy_chain = ptr->next;
|
||
xfree (ptr);
|
||
}
|
||
}
|
||
|
||
/* Set the cleanup_chain to 0, and return the old cleanup chain. */
|
||
struct cleanup *
|
||
save_cleanups (void)
|
||
{
|
||
return save_my_cleanups (&cleanup_chain);
|
||
}
|
||
|
||
struct cleanup *
|
||
save_final_cleanups (void)
|
||
{
|
||
return save_my_cleanups (&final_cleanup_chain);
|
||
}
|
||
|
||
struct cleanup *
|
||
save_my_cleanups (struct cleanup **pmy_chain)
|
||
{
|
||
struct cleanup *old_chain = *pmy_chain;
|
||
|
||
*pmy_chain = 0;
|
||
return old_chain;
|
||
}
|
||
|
||
/* Restore the cleanup chain from a previously saved chain. */
|
||
void
|
||
restore_cleanups (struct cleanup *chain)
|
||
{
|
||
restore_my_cleanups (&cleanup_chain, chain);
|
||
}
|
||
|
||
void
|
||
restore_final_cleanups (struct cleanup *chain)
|
||
{
|
||
restore_my_cleanups (&final_cleanup_chain, chain);
|
||
}
|
||
|
||
void
|
||
restore_my_cleanups (struct cleanup **pmy_chain, struct cleanup *chain)
|
||
{
|
||
*pmy_chain = chain;
|
||
}
|
||
|
||
/* This function is useful for cleanups.
|
||
Do
|
||
|
||
foo = xmalloc (...);
|
||
old_chain = make_cleanup (free_current_contents, &foo);
|
||
|
||
to arrange to free the object thus allocated. */
|
||
|
||
void
|
||
free_current_contents (void *ptr)
|
||
{
|
||
void **location = ptr;
|
||
if (location == NULL)
|
||
internal_error (__FILE__, __LINE__,
|
||
"free_current_contents: NULL pointer");
|
||
if (*location != NULL)
|
||
{
|
||
xfree (*location);
|
||
*location = NULL;
|
||
}
|
||
}
|
||
|
||
/* Provide a known function that does nothing, to use as a base for
|
||
for a possibly long chain of cleanups. This is useful where we
|
||
use the cleanup chain for handling normal cleanups as well as dealing
|
||
with cleanups that need to be done as a result of a call to error().
|
||
In such cases, we may not be certain where the first cleanup is, unless
|
||
we have a do-nothing one to always use as the base. */
|
||
|
||
void
|
||
null_cleanup (void *arg)
|
||
{
|
||
}
|
||
|
||
/* Add a continuation to the continuation list, the global list
|
||
cmd_continuation. The new continuation will be added at the front.*/
|
||
void
|
||
add_continuation (void (*continuation_hook) (struct continuation_arg *),
|
||
struct continuation_arg *arg_list)
|
||
{
|
||
struct continuation *continuation_ptr;
|
||
|
||
continuation_ptr =
|
||
(struct continuation *) xmalloc (sizeof (struct continuation));
|
||
continuation_ptr->continuation_hook = continuation_hook;
|
||
continuation_ptr->arg_list = arg_list;
|
||
continuation_ptr->next = cmd_continuation;
|
||
cmd_continuation = continuation_ptr;
|
||
}
|
||
|
||
/* Walk down the cmd_continuation list, and execute all the
|
||
continuations. There is a problem though. In some cases new
|
||
continuations may be added while we are in the middle of this
|
||
loop. If this happens they will be added in the front, and done
|
||
before we have a chance of exhausting those that were already
|
||
there. We need to then save the beginning of the list in a pointer
|
||
and do the continuations from there on, instead of using the
|
||
global beginning of list as our iteration pointer.*/
|
||
void
|
||
do_all_continuations (void)
|
||
{
|
||
struct continuation *continuation_ptr;
|
||
struct continuation *saved_continuation;
|
||
|
||
/* Copy the list header into another pointer, and set the global
|
||
list header to null, so that the global list can change as a side
|
||
effect of invoking the continuations and the processing of
|
||
the preexisting continuations will not be affected. */
|
||
continuation_ptr = cmd_continuation;
|
||
cmd_continuation = NULL;
|
||
|
||
/* Work now on the list we have set aside. */
|
||
while (continuation_ptr)
|
||
{
|
||
(continuation_ptr->continuation_hook) (continuation_ptr->arg_list);
|
||
saved_continuation = continuation_ptr;
|
||
continuation_ptr = continuation_ptr->next;
|
||
xfree (saved_continuation);
|
||
}
|
||
}
|
||
|
||
/* Walk down the cmd_continuation list, and get rid of all the
|
||
continuations. */
|
||
void
|
||
discard_all_continuations (void)
|
||
{
|
||
struct continuation *continuation_ptr;
|
||
|
||
while (cmd_continuation)
|
||
{
|
||
continuation_ptr = cmd_continuation;
|
||
cmd_continuation = continuation_ptr->next;
|
||
xfree (continuation_ptr);
|
||
}
|
||
}
|
||
|
||
/* Add a continuation to the continuation list, the global list
|
||
intermediate_continuation. The new continuation will be added at the front.*/
|
||
void
|
||
add_intermediate_continuation (void (*continuation_hook)
|
||
(struct continuation_arg *),
|
||
struct continuation_arg *arg_list)
|
||
{
|
||
struct continuation *continuation_ptr;
|
||
|
||
continuation_ptr =
|
||
(struct continuation *) xmalloc (sizeof (struct continuation));
|
||
continuation_ptr->continuation_hook = continuation_hook;
|
||
continuation_ptr->arg_list = arg_list;
|
||
continuation_ptr->next = intermediate_continuation;
|
||
intermediate_continuation = continuation_ptr;
|
||
}
|
||
|
||
/* Walk down the cmd_continuation list, and execute all the
|
||
continuations. There is a problem though. In some cases new
|
||
continuations may be added while we are in the middle of this
|
||
loop. If this happens they will be added in the front, and done
|
||
before we have a chance of exhausting those that were already
|
||
there. We need to then save the beginning of the list in a pointer
|
||
and do the continuations from there on, instead of using the
|
||
global beginning of list as our iteration pointer.*/
|
||
void
|
||
do_all_intermediate_continuations (void)
|
||
{
|
||
struct continuation *continuation_ptr;
|
||
struct continuation *saved_continuation;
|
||
|
||
/* Copy the list header into another pointer, and set the global
|
||
list header to null, so that the global list can change as a side
|
||
effect of invoking the continuations and the processing of
|
||
the preexisting continuations will not be affected. */
|
||
continuation_ptr = intermediate_continuation;
|
||
intermediate_continuation = NULL;
|
||
|
||
/* Work now on the list we have set aside. */
|
||
while (continuation_ptr)
|
||
{
|
||
(continuation_ptr->continuation_hook) (continuation_ptr->arg_list);
|
||
saved_continuation = continuation_ptr;
|
||
continuation_ptr = continuation_ptr->next;
|
||
xfree (saved_continuation);
|
||
}
|
||
}
|
||
|
||
/* Walk down the cmd_continuation list, and get rid of all the
|
||
continuations. */
|
||
void
|
||
discard_all_intermediate_continuations (void)
|
||
{
|
||
struct continuation *continuation_ptr;
|
||
|
||
while (intermediate_continuation)
|
||
{
|
||
continuation_ptr = intermediate_continuation;
|
||
intermediate_continuation = continuation_ptr->next;
|
||
xfree (continuation_ptr);
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/* Print a warning message. The first argument STRING is the warning
|
||
message, used as an fprintf format string, the second is the
|
||
va_list of arguments for that string. A warning is unfiltered (not
|
||
paginated) so that the user does not need to page through each
|
||
screen full of warnings when there are lots of them. */
|
||
|
||
void
|
||
vwarning (const char *string, va_list args)
|
||
{
|
||
if (deprecated_warning_hook)
|
||
(*deprecated_warning_hook) (string, args);
|
||
else
|
||
{
|
||
target_terminal_ours ();
|
||
wrap_here (""); /* Force out any buffered output */
|
||
gdb_flush (gdb_stdout);
|
||
if (warning_pre_print)
|
||
fputs_unfiltered (warning_pre_print, gdb_stderr);
|
||
vfprintf_unfiltered (gdb_stderr, string, args);
|
||
fprintf_unfiltered (gdb_stderr, "\n");
|
||
va_end (args);
|
||
}
|
||
}
|
||
|
||
/* Print a warning message.
|
||
The first argument STRING is the warning message, used as a fprintf string,
|
||
and the remaining args are passed as arguments to it.
|
||
The primary difference between warnings and errors is that a warning
|
||
does not force the return to command level. */
|
||
|
||
void
|
||
warning (const char *string, ...)
|
||
{
|
||
va_list args;
|
||
va_start (args, string);
|
||
vwarning (string, args);
|
||
va_end (args);
|
||
}
|
||
|
||
/* Print an error message and return to command level.
|
||
The first argument STRING is the error message, used as a fprintf string,
|
||
and the remaining args are passed as arguments to it. */
|
||
|
||
NORETURN void
|
||
verror (const char *string, va_list args)
|
||
{
|
||
struct ui_file *tmp_stream = mem_fileopen ();
|
||
make_cleanup_ui_file_delete (tmp_stream);
|
||
vfprintf_unfiltered (tmp_stream, string, args);
|
||
error_stream (tmp_stream);
|
||
}
|
||
|
||
NORETURN void
|
||
error (const char *string, ...)
|
||
{
|
||
va_list args;
|
||
va_start (args, string);
|
||
verror (string, args);
|
||
va_end (args);
|
||
}
|
||
|
||
static void
|
||
do_write (void *data, const char *buffer, long length_buffer)
|
||
{
|
||
ui_file_write (data, buffer, length_buffer);
|
||
}
|
||
|
||
/* Cause a silent error to occur. Any error message is recorded
|
||
though it is not issued. */
|
||
NORETURN void
|
||
error_silent (const char *string, ...)
|
||
{
|
||
va_list args;
|
||
struct ui_file *tmp_stream = mem_fileopen ();
|
||
va_start (args, string);
|
||
make_cleanup_ui_file_delete (tmp_stream);
|
||
vfprintf_unfiltered (tmp_stream, string, args);
|
||
/* Copy the stream into the GDB_LASTERR buffer. */
|
||
ui_file_rewind (gdb_lasterr);
|
||
ui_file_put (tmp_stream, do_write, gdb_lasterr);
|
||
va_end (args);
|
||
|
||
throw_exception (RETURN_ERROR);
|
||
}
|
||
|
||
/* Output an error message including any pre-print text to gdb_stderr. */
|
||
void
|
||
error_output_message (char *pre_print, char *msg)
|
||
{
|
||
target_terminal_ours ();
|
||
wrap_here (""); /* Force out any buffered output */
|
||
gdb_flush (gdb_stdout);
|
||
annotate_error_begin ();
|
||
if (pre_print)
|
||
fputs_filtered (pre_print, gdb_stderr);
|
||
fputs_filtered (msg, gdb_stderr);
|
||
fprintf_filtered (gdb_stderr, "\n");
|
||
}
|
||
|
||
NORETURN void
|
||
error_stream (struct ui_file *stream)
|
||
{
|
||
if (deprecated_error_begin_hook)
|
||
deprecated_error_begin_hook ();
|
||
|
||
/* Copy the stream into the GDB_LASTERR buffer. */
|
||
ui_file_rewind (gdb_lasterr);
|
||
ui_file_put (stream, do_write, gdb_lasterr);
|
||
|
||
/* Write the message plus any error_pre_print to gdb_stderr. */
|
||
target_terminal_ours ();
|
||
wrap_here (""); /* Force out any buffered output */
|
||
gdb_flush (gdb_stdout);
|
||
annotate_error_begin ();
|
||
if (error_pre_print)
|
||
fputs_filtered (error_pre_print, gdb_stderr);
|
||
ui_file_put (stream, do_write, gdb_stderr);
|
||
fprintf_filtered (gdb_stderr, "\n");
|
||
|
||
throw_exception (RETURN_ERROR);
|
||
}
|
||
|
||
/* Get the last error message issued by gdb */
|
||
|
||
char *
|
||
error_last_message (void)
|
||
{
|
||
long len;
|
||
return ui_file_xstrdup (gdb_lasterr, &len);
|
||
}
|
||
|
||
/* This is to be called by main() at the very beginning */
|
||
|
||
void
|
||
error_init (void)
|
||
{
|
||
gdb_lasterr = mem_fileopen ();
|
||
}
|
||
|
||
/* Print a message reporting an internal error/warning. Ask the user
|
||
if they want to continue, dump core, or just exit. Return
|
||
something to indicate a quit. */
|
||
|
||
struct internal_problem
|
||
{
|
||
const char *name;
|
||
/* FIXME: cagney/2002-08-15: There should be ``maint set/show''
|
||
commands available for controlling these variables. */
|
||
enum auto_boolean should_quit;
|
||
enum auto_boolean should_dump_core;
|
||
};
|
||
|
||
/* Report a problem, internal to GDB, to the user. Once the problem
|
||
has been reported, and assuming GDB didn't quit, the caller can
|
||
either allow execution to resume or throw an error. */
|
||
|
||
static void
|
||
internal_vproblem (struct internal_problem *problem,
|
||
const char *file, int line, const char *fmt, va_list ap)
|
||
{
|
||
static int dejavu;
|
||
int quit_p;
|
||
int dump_core_p;
|
||
char *reason;
|
||
|
||
/* Don't allow infinite error/warning recursion. */
|
||
{
|
||
static char msg[] = "Recursive internal problem.\n";
|
||
switch (dejavu)
|
||
{
|
||
case 0:
|
||
dejavu = 1;
|
||
break;
|
||
case 1:
|
||
dejavu = 2;
|
||
fputs_unfiltered (msg, gdb_stderr);
|
||
abort (); /* NOTE: GDB has only three calls to abort(). */
|
||
default:
|
||
dejavu = 3;
|
||
write (STDERR_FILENO, msg, sizeof (msg));
|
||
exit (1);
|
||
}
|
||
}
|
||
|
||
/* Try to get the message out and at the start of a new line. */
|
||
target_terminal_ours ();
|
||
begin_line ();
|
||
|
||
/* Create a string containing the full error/warning message. Need
|
||
to call query with this full string, as otherwize the reason
|
||
(error/warning) and question become separated. Format using a
|
||
style similar to a compiler error message. Include extra detail
|
||
so that the user knows that they are living on the edge. */
|
||
{
|
||
char *msg;
|
||
msg = xstrvprintf (fmt, ap);
|
||
reason = xstrprintf ("\
|
||
%s:%d: %s: %s\n\
|
||
A problem internal to GDB has been detected,\n\
|
||
further debugging may prove unreliable.", file, line, problem->name, msg);
|
||
xfree (msg);
|
||
make_cleanup (xfree, reason);
|
||
}
|
||
|
||
switch (problem->should_quit)
|
||
{
|
||
case AUTO_BOOLEAN_AUTO:
|
||
/* Default (yes/batch case) is to quit GDB. When in batch mode
|
||
this lessens the likelhood of GDB going into an infinate
|
||
loop. */
|
||
quit_p = query ("%s\nQuit this debugging session? ", reason);
|
||
break;
|
||
case AUTO_BOOLEAN_TRUE:
|
||
quit_p = 1;
|
||
break;
|
||
case AUTO_BOOLEAN_FALSE:
|
||
quit_p = 0;
|
||
break;
|
||
default:
|
||
internal_error (__FILE__, __LINE__, "bad switch");
|
||
}
|
||
|
||
switch (problem->should_dump_core)
|
||
{
|
||
case AUTO_BOOLEAN_AUTO:
|
||
/* Default (yes/batch case) is to dump core. This leaves a GDB
|
||
`dropping' so that it is easier to see that something went
|
||
wrong in GDB. */
|
||
dump_core_p = query ("%s\nCreate a core file of GDB? ", reason);
|
||
break;
|
||
break;
|
||
case AUTO_BOOLEAN_TRUE:
|
||
dump_core_p = 1;
|
||
break;
|
||
case AUTO_BOOLEAN_FALSE:
|
||
dump_core_p = 0;
|
||
break;
|
||
default:
|
||
internal_error (__FILE__, __LINE__, "bad switch");
|
||
}
|
||
|
||
if (quit_p)
|
||
{
|
||
if (dump_core_p)
|
||
abort (); /* NOTE: GDB has only three calls to abort(). */
|
||
else
|
||
exit (1);
|
||
}
|
||
else
|
||
{
|
||
if (dump_core_p)
|
||
{
|
||
if (fork () == 0)
|
||
abort (); /* NOTE: GDB has only three calls to abort(). */
|
||
}
|
||
}
|
||
|
||
dejavu = 0;
|
||
}
|
||
|
||
static struct internal_problem internal_error_problem = {
|
||
"internal-error", AUTO_BOOLEAN_AUTO, AUTO_BOOLEAN_AUTO
|
||
};
|
||
|
||
NORETURN void
|
||
internal_verror (const char *file, int line, const char *fmt, va_list ap)
|
||
{
|
||
internal_vproblem (&internal_error_problem, file, line, fmt, ap);
|
||
throw_exception (RETURN_ERROR);
|
||
}
|
||
|
||
NORETURN void
|
||
internal_error (const char *file, int line, const char *string, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, string);
|
||
internal_verror (file, line, string, ap);
|
||
va_end (ap);
|
||
}
|
||
|
||
static struct internal_problem internal_warning_problem = {
|
||
"internal-error", AUTO_BOOLEAN_AUTO, AUTO_BOOLEAN_AUTO
|
||
};
|
||
|
||
void
|
||
internal_vwarning (const char *file, int line, const char *fmt, va_list ap)
|
||
{
|
||
internal_vproblem (&internal_warning_problem, file, line, fmt, ap);
|
||
}
|
||
|
||
void
|
||
internal_warning (const char *file, int line, const char *string, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, string);
|
||
internal_vwarning (file, line, string, ap);
|
||
va_end (ap);
|
||
}
|
||
|
||
/* The strerror() function can return NULL for errno values that are
|
||
out of range. Provide a "safe" version that always returns a
|
||
printable string. */
|
||
|
||
char *
|
||
safe_strerror (int errnum)
|
||
{
|
||
char *msg;
|
||
static char buf[32];
|
||
|
||
msg = strerror (errnum);
|
||
if (msg == NULL)
|
||
{
|
||
sprintf (buf, "(undocumented errno %d)", errnum);
|
||
msg = buf;
|
||
}
|
||
return (msg);
|
||
}
|
||
|
||
/* Print the system error message for errno, and also mention STRING
|
||
as the file name for which the error was encountered.
|
||
Then return to command level. */
|
||
|
||
NORETURN void
|
||
perror_with_name (const char *string)
|
||
{
|
||
char *err;
|
||
char *combined;
|
||
|
||
err = safe_strerror (errno);
|
||
combined = (char *) alloca (strlen (err) + strlen (string) + 3);
|
||
strcpy (combined, string);
|
||
strcat (combined, ": ");
|
||
strcat (combined, err);
|
||
|
||
/* I understand setting these is a matter of taste. Still, some people
|
||
may clear errno but not know about bfd_error. Doing this here is not
|
||
unreasonable. */
|
||
bfd_set_error (bfd_error_no_error);
|
||
errno = 0;
|
||
|
||
error ("%s.", combined);
|
||
}
|
||
|
||
/* Print the system error message for ERRCODE, and also mention STRING
|
||
as the file name for which the error was encountered. */
|
||
|
||
void
|
||
print_sys_errmsg (const char *string, int errcode)
|
||
{
|
||
char *err;
|
||
char *combined;
|
||
|
||
err = safe_strerror (errcode);
|
||
combined = (char *) alloca (strlen (err) + strlen (string) + 3);
|
||
strcpy (combined, string);
|
||
strcat (combined, ": ");
|
||
strcat (combined, err);
|
||
|
||
/* We want anything which was printed on stdout to come out first, before
|
||
this message. */
|
||
gdb_flush (gdb_stdout);
|
||
fprintf_unfiltered (gdb_stderr, "%s.\n", combined);
|
||
}
|
||
|
||
/* Control C eventually causes this to be called, at a convenient time. */
|
||
|
||
void
|
||
quit (void)
|
||
{
|
||
struct serial *gdb_stdout_serial = serial_fdopen (1);
|
||
|
||
target_terminal_ours ();
|
||
|
||
/* We want all output to appear now, before we print "Quit". We
|
||
have 3 levels of buffering we have to flush (it's possible that
|
||
some of these should be changed to flush the lower-level ones
|
||
too): */
|
||
|
||
/* 1. The _filtered buffer. */
|
||
wrap_here ((char *) 0);
|
||
|
||
/* 2. The stdio buffer. */
|
||
gdb_flush (gdb_stdout);
|
||
gdb_flush (gdb_stderr);
|
||
|
||
/* 3. The system-level buffer. */
|
||
serial_drain_output (gdb_stdout_serial);
|
||
serial_un_fdopen (gdb_stdout_serial);
|
||
|
||
annotate_error_begin ();
|
||
|
||
/* Don't use *_filtered; we don't want to prompt the user to continue. */
|
||
if (quit_pre_print)
|
||
fputs_unfiltered (quit_pre_print, gdb_stderr);
|
||
|
||
#ifdef __MSDOS__
|
||
/* No steenking SIGINT will ever be coming our way when the
|
||
program is resumed. Don't lie. */
|
||
fprintf_unfiltered (gdb_stderr, "Quit\n");
|
||
#else
|
||
if (job_control
|
||
/* If there is no terminal switching for this target, then we can't
|
||
possibly get screwed by the lack of job control. */
|
||
|| current_target.to_terminal_ours == NULL)
|
||
fprintf_unfiltered (gdb_stderr, "Quit\n");
|
||
else
|
||
fprintf_unfiltered (gdb_stderr,
|
||
"Quit (expect signal SIGINT when the program is resumed)\n");
|
||
#endif
|
||
throw_exception (RETURN_QUIT);
|
||
}
|
||
|
||
/* Control C comes here */
|
||
void
|
||
request_quit (int signo)
|
||
{
|
||
quit_flag = 1;
|
||
/* Restore the signal handler. Harmless with BSD-style signals, needed
|
||
for System V-style signals. So just always do it, rather than worrying
|
||
about USG defines and stuff like that. */
|
||
signal (signo, request_quit);
|
||
|
||
if (immediate_quit)
|
||
quit ();
|
||
}
|
||
|
||
/* Memory management stuff (malloc friends). */
|
||
|
||
static void *
|
||
mmalloc (void *md, size_t size)
|
||
{
|
||
return malloc (size); /* NOTE: GDB's only call to malloc() */
|
||
}
|
||
|
||
static void *
|
||
mrealloc (void *md, void *ptr, size_t size)
|
||
{
|
||
if (ptr == 0) /* Guard against old realloc's */
|
||
return mmalloc (md, size);
|
||
else
|
||
return realloc (ptr, size); /* NOTE: GDB's only call to ralloc() */
|
||
}
|
||
|
||
static void *
|
||
mcalloc (void *md, size_t number, size_t size)
|
||
{
|
||
return calloc (number, size); /* NOTE: GDB's only call to calloc() */
|
||
}
|
||
|
||
static void
|
||
mfree (void *md, void *ptr)
|
||
{
|
||
free (ptr); /* NOTE: GDB's only call to free() */
|
||
}
|
||
|
||
/* This used to do something interesting with USE_MMALLOC.
|
||
* It can be retired any time. -- chastain 2004-01-19. */
|
||
void
|
||
init_malloc (void *md)
|
||
{
|
||
}
|
||
|
||
/* Called when a memory allocation fails, with the number of bytes of
|
||
memory requested in SIZE. */
|
||
|
||
NORETURN void
|
||
nomem (long size)
|
||
{
|
||
if (size > 0)
|
||
{
|
||
internal_error (__FILE__, __LINE__,
|
||
"virtual memory exhausted: can't allocate %ld bytes.",
|
||
size);
|
||
}
|
||
else
|
||
{
|
||
internal_error (__FILE__, __LINE__, "virtual memory exhausted.");
|
||
}
|
||
}
|
||
|
||
/* The xmmalloc() family of memory management routines.
|
||
|
||
These are are like the mmalloc() family except that they implement
|
||
consistent semantics and guard against typical memory management
|
||
problems: if a malloc fails, an internal error is thrown; if
|
||
free(NULL) is called, it is ignored; if *alloc(0) is called, NULL
|
||
is returned.
|
||
|
||
All these routines are implemented using the mmalloc() family. */
|
||
|
||
void *
|
||
xmmalloc (void *md, size_t size)
|
||
{
|
||
void *val;
|
||
|
||
/* See libiberty/xmalloc.c. This function need's to match that's
|
||
semantics. It never returns NULL. */
|
||
if (size == 0)
|
||
size = 1;
|
||
|
||
val = mmalloc (md, size);
|
||
if (val == NULL)
|
||
nomem (size);
|
||
|
||
return (val);
|
||
}
|
||
|
||
void *
|
||
xmrealloc (void *md, void *ptr, size_t size)
|
||
{
|
||
void *val;
|
||
|
||
/* See libiberty/xmalloc.c. This function need's to match that's
|
||
semantics. It never returns NULL. */
|
||
if (size == 0)
|
||
size = 1;
|
||
|
||
if (ptr != NULL)
|
||
val = mrealloc (md, ptr, size);
|
||
else
|
||
val = mmalloc (md, size);
|
||
if (val == NULL)
|
||
nomem (size);
|
||
|
||
return (val);
|
||
}
|
||
|
||
void *
|
||
xmcalloc (void *md, size_t number, size_t size)
|
||
{
|
||
void *mem;
|
||
|
||
/* See libiberty/xmalloc.c. This function need's to match that's
|
||
semantics. It never returns NULL. */
|
||
if (number == 0 || size == 0)
|
||
{
|
||
number = 1;
|
||
size = 1;
|
||
}
|
||
|
||
mem = mcalloc (md, number, size);
|
||
if (mem == NULL)
|
||
nomem (number * size);
|
||
|
||
return mem;
|
||
}
|
||
|
||
void
|
||
xmfree (void *md, void *ptr)
|
||
{
|
||
if (ptr != NULL)
|
||
mfree (md, ptr);
|
||
}
|
||
|
||
/* The xmalloc() (libiberty.h) family of memory management routines.
|
||
|
||
These are like the ISO-C malloc() family except that they implement
|
||
consistent semantics and guard against typical memory management
|
||
problems. See xmmalloc() above for further information.
|
||
|
||
All these routines are wrappers to the xmmalloc() family. */
|
||
|
||
/* NOTE: These are declared using PTR to ensure consistency with
|
||
"libiberty.h". xfree() is GDB local. */
|
||
|
||
PTR /* OK: PTR */
|
||
xmalloc (size_t size)
|
||
{
|
||
return xmmalloc (NULL, size);
|
||
}
|
||
|
||
PTR /* OK: PTR */
|
||
xrealloc (PTR ptr, size_t size) /* OK: PTR */
|
||
{
|
||
return xmrealloc (NULL, ptr, size);
|
||
}
|
||
|
||
PTR /* OK: PTR */
|
||
xcalloc (size_t number, size_t size)
|
||
{
|
||
return xmcalloc (NULL, number, size);
|
||
}
|
||
|
||
void
|
||
xfree (void *ptr)
|
||
{
|
||
xmfree (NULL, ptr);
|
||
}
|
||
|
||
|
||
/* Like asprintf/vasprintf but get an internal_error if the call
|
||
fails. */
|
||
|
||
char *
|
||
xstrprintf (const char *format, ...)
|
||
{
|
||
char *ret;
|
||
va_list args;
|
||
va_start (args, format);
|
||
ret = xstrvprintf (format, args);
|
||
va_end (args);
|
||
return ret;
|
||
}
|
||
|
||
void
|
||
xasprintf (char **ret, const char *format, ...)
|
||
{
|
||
va_list args;
|
||
va_start (args, format);
|
||
(*ret) = xstrvprintf (format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
void
|
||
xvasprintf (char **ret, const char *format, va_list ap)
|
||
{
|
||
int status = vasprintf (ret, format, ap);
|
||
/* NULL could be returned due to a memory allocation problem; a
|
||
badly format string; or something else. */
|
||
if ((*ret) == NULL)
|
||
internal_error (__FILE__, __LINE__,
|
||
"vasprintf returned NULL buffer (errno %d)", errno);
|
||
/* A negative status with a non-NULL buffer shouldn't never
|
||
happen. But to be sure. */
|
||
if (status < 0)
|
||
internal_error (__FILE__, __LINE__,
|
||
"vasprintf call failed (errno %d)", errno);
|
||
}
|
||
|
||
char *
|
||
xstrvprintf (const char *format, va_list ap)
|
||
{
|
||
char *ret = NULL;
|
||
int status = vasprintf (&ret, format, ap);
|
||
/* NULL is returned when there was a memory allocation problem. */
|
||
if (ret == NULL)
|
||
nomem (0);
|
||
/* A negative status (the printed length) with a non-NULL buffer
|
||
should never happen, but just to be sure. */
|
||
if (status < 0)
|
||
internal_error (__FILE__, __LINE__,
|
||
"vasprintf call failed (errno %d)", errno);
|
||
return ret;
|
||
}
|
||
|
||
/* My replacement for the read system call.
|
||
Used like `read' but keeps going if `read' returns too soon. */
|
||
|
||
int
|
||
myread (int desc, char *addr, int len)
|
||
{
|
||
int val;
|
||
int orglen = len;
|
||
|
||
while (len > 0)
|
||
{
|
||
val = read (desc, addr, len);
|
||
if (val < 0)
|
||
return val;
|
||
if (val == 0)
|
||
return orglen - len;
|
||
len -= val;
|
||
addr += val;
|
||
}
|
||
return orglen;
|
||
}
|
||
|
||
/* Make a copy of the string at PTR with SIZE characters
|
||
(and add a null character at the end in the copy).
|
||
Uses malloc to get the space. Returns the address of the copy. */
|
||
|
||
char *
|
||
savestring (const char *ptr, size_t size)
|
||
{
|
||
char *p = (char *) xmalloc (size + 1);
|
||
memcpy (p, ptr, size);
|
||
p[size] = 0;
|
||
return p;
|
||
}
|
||
|
||
char *
|
||
msavestring (void *md, const char *ptr, size_t size)
|
||
{
|
||
char *p = (char *) xmmalloc (md, size + 1);
|
||
memcpy (p, ptr, size);
|
||
p[size] = 0;
|
||
return p;
|
||
}
|
||
|
||
char *
|
||
mstrsave (void *md, const char *ptr)
|
||
{
|
||
return (msavestring (md, ptr, strlen (ptr)));
|
||
}
|
||
|
||
void
|
||
print_spaces (int n, struct ui_file *file)
|
||
{
|
||
fputs_unfiltered (n_spaces (n), file);
|
||
}
|
||
|
||
/* Print a host address. */
|
||
|
||
void
|
||
gdb_print_host_address (const void *addr, struct ui_file *stream)
|
||
{
|
||
|
||
/* We could use the %p conversion specifier to fprintf if we had any
|
||
way of knowing whether this host supports it. But the following
|
||
should work on the Alpha and on 32 bit machines. */
|
||
|
||
fprintf_filtered (stream, "0x%lx", (unsigned long) addr);
|
||
}
|
||
|
||
/* Ask user a y-or-n question and return 1 iff answer is yes.
|
||
Takes three args which are given to printf to print the question.
|
||
The first, a control string, should end in "? ".
|
||
It should not say how to answer, because we do that. */
|
||
|
||
/* VARARGS */
|
||
int
|
||
query (const char *ctlstr, ...)
|
||
{
|
||
va_list args;
|
||
int answer;
|
||
int ans2;
|
||
int retval;
|
||
|
||
if (deprecated_query_hook)
|
||
{
|
||
va_start (args, ctlstr);
|
||
return deprecated_query_hook (ctlstr, args);
|
||
}
|
||
|
||
/* Automatically answer "yes" if input is not from a terminal. */
|
||
if (!input_from_terminal_p ())
|
||
return 1;
|
||
|
||
while (1)
|
||
{
|
||
wrap_here (""); /* Flush any buffered output */
|
||
gdb_flush (gdb_stdout);
|
||
|
||
if (annotation_level > 1)
|
||
printf_filtered ("\n\032\032pre-query\n");
|
||
|
||
va_start (args, ctlstr);
|
||
vfprintf_filtered (gdb_stdout, ctlstr, args);
|
||
va_end (args);
|
||
printf_filtered ("(y or n) ");
|
||
|
||
if (annotation_level > 1)
|
||
printf_filtered ("\n\032\032query\n");
|
||
|
||
wrap_here ("");
|
||
gdb_flush (gdb_stdout);
|
||
|
||
answer = fgetc (stdin);
|
||
clearerr (stdin); /* in case of C-d */
|
||
if (answer == EOF) /* C-d */
|
||
{
|
||
retval = 1;
|
||
break;
|
||
}
|
||
/* Eat rest of input line, to EOF or newline */
|
||
if (answer != '\n')
|
||
do
|
||
{
|
||
ans2 = fgetc (stdin);
|
||
clearerr (stdin);
|
||
}
|
||
while (ans2 != EOF && ans2 != '\n' && ans2 != '\r');
|
||
|
||
if (answer >= 'a')
|
||
answer -= 040;
|
||
if (answer == 'Y')
|
||
{
|
||
retval = 1;
|
||
break;
|
||
}
|
||
if (answer == 'N')
|
||
{
|
||
retval = 0;
|
||
break;
|
||
}
|
||
printf_filtered ("Please answer y or n.\n");
|
||
}
|
||
|
||
if (annotation_level > 1)
|
||
printf_filtered ("\n\032\032post-query\n");
|
||
return retval;
|
||
}
|
||
|
||
|
||
/* This function supports the nquery() and yquery() functions.
|
||
Ask user a y-or-n question and return 0 if answer is no, 1 if
|
||
answer is yes, or default the answer to the specified default.
|
||
DEFCHAR is either 'y' or 'n' and refers to the default answer.
|
||
CTLSTR is the control string and should end in "? ". It should
|
||
not say how to answer, because we do that.
|
||
ARGS are the arguments passed along with the CTLSTR argument to
|
||
printf. */
|
||
|
||
static int
|
||
defaulted_query (const char *ctlstr, const char defchar, va_list args)
|
||
{
|
||
int answer;
|
||
int ans2;
|
||
int retval;
|
||
int def_value;
|
||
char def_answer, not_def_answer;
|
||
char *y_string, *n_string;
|
||
|
||
/* Set up according to which answer is the default. */
|
||
if (defchar == 'y')
|
||
{
|
||
def_value = 1;
|
||
def_answer = 'Y';
|
||
not_def_answer = 'N';
|
||
y_string = "[y]";
|
||
n_string = "n";
|
||
}
|
||
else
|
||
{
|
||
def_value = 0;
|
||
def_answer = 'N';
|
||
not_def_answer = 'Y';
|
||
y_string = "y";
|
||
n_string = "[n]";
|
||
}
|
||
|
||
if (deprecated_query_hook)
|
||
{
|
||
return deprecated_query_hook (ctlstr, args);
|
||
}
|
||
|
||
/* Automatically answer default value if input is not from a terminal. */
|
||
if (!input_from_terminal_p ())
|
||
return def_value;
|
||
|
||
while (1)
|
||
{
|
||
wrap_here (""); /* Flush any buffered output */
|
||
gdb_flush (gdb_stdout);
|
||
|
||
if (annotation_level > 1)
|
||
printf_filtered ("\n\032\032pre-query\n");
|
||
|
||
vfprintf_filtered (gdb_stdout, ctlstr, args);
|
||
printf_filtered ("(%s or %s) ", y_string, n_string);
|
||
|
||
if (annotation_level > 1)
|
||
printf_filtered ("\n\032\032query\n");
|
||
|
||
wrap_here ("");
|
||
gdb_flush (gdb_stdout);
|
||
|
||
answer = fgetc (stdin);
|
||
clearerr (stdin); /* in case of C-d */
|
||
if (answer == EOF) /* C-d */
|
||
{
|
||
retval = def_value;
|
||
break;
|
||
}
|
||
/* Eat rest of input line, to EOF or newline */
|
||
if (answer != '\n')
|
||
do
|
||
{
|
||
ans2 = fgetc (stdin);
|
||
clearerr (stdin);
|
||
}
|
||
while (ans2 != EOF && ans2 != '\n' && ans2 != '\r');
|
||
|
||
if (answer >= 'a')
|
||
answer -= 040;
|
||
/* Check answer. For the non-default, the user must specify
|
||
the non-default explicitly. */
|
||
if (answer == not_def_answer)
|
||
{
|
||
retval = !def_value;
|
||
break;
|
||
}
|
||
/* Otherwise, for the default, the user may either specify
|
||
the required input or have it default by entering nothing. */
|
||
if (answer == def_answer || answer == '\n' ||
|
||
answer == '\r' || answer == EOF)
|
||
{
|
||
retval = def_value;
|
||
break;
|
||
}
|
||
/* Invalid entries are not defaulted and require another selection. */
|
||
printf_filtered ("Please answer %s or %s.\n",
|
||
y_string, n_string);
|
||
}
|
||
|
||
if (annotation_level > 1)
|
||
printf_filtered ("\n\032\032post-query\n");
|
||
return retval;
|
||
}
|
||
|
||
|
||
/* Ask user a y-or-n question and return 0 if answer is no, 1 if
|
||
answer is yes, or 0 if answer is defaulted.
|
||
Takes three args which are given to printf to print the question.
|
||
The first, a control string, should end in "? ".
|
||
It should not say how to answer, because we do that. */
|
||
|
||
int
|
||
nquery (const char *ctlstr, ...)
|
||
{
|
||
va_list args;
|
||
|
||
va_start (args, ctlstr);
|
||
return defaulted_query (ctlstr, 'n', args);
|
||
va_end (args);
|
||
}
|
||
|
||
/* Ask user a y-or-n question and return 0 if answer is no, 1 if
|
||
answer is yes, or 1 if answer is defaulted.
|
||
Takes three args which are given to printf to print the question.
|
||
The first, a control string, should end in "? ".
|
||
It should not say how to answer, because we do that. */
|
||
|
||
int
|
||
yquery (const char *ctlstr, ...)
|
||
{
|
||
va_list args;
|
||
|
||
va_start (args, ctlstr);
|
||
return defaulted_query (ctlstr, 'y', args);
|
||
va_end (args);
|
||
}
|
||
|
||
/* Print an error message saying that we couldn't make sense of a
|
||
\^mumble sequence in a string or character constant. START and END
|
||
indicate a substring of some larger string that contains the
|
||
erroneous backslash sequence, missing the initial backslash. */
|
||
static NORETURN int
|
||
no_control_char_error (const char *start, const char *end)
|
||
{
|
||
int len = end - start;
|
||
char *copy = alloca (end - start + 1);
|
||
|
||
memcpy (copy, start, len);
|
||
copy[len] = '\0';
|
||
|
||
error ("There is no control character `\\%s' in the `%s' character set.",
|
||
copy, target_charset ());
|
||
}
|
||
|
||
/* Parse a C escape sequence. STRING_PTR points to a variable
|
||
containing a pointer to the string to parse. That pointer
|
||
should point to the character after the \. That pointer
|
||
is updated past the characters we use. The value of the
|
||
escape sequence is returned.
|
||
|
||
A negative value means the sequence \ newline was seen,
|
||
which is supposed to be equivalent to nothing at all.
|
||
|
||
If \ is followed by a null character, we return a negative
|
||
value and leave the string pointer pointing at the null character.
|
||
|
||
If \ is followed by 000, we return 0 and leave the string pointer
|
||
after the zeros. A value of 0 does not mean end of string. */
|
||
|
||
int
|
||
parse_escape (char **string_ptr)
|
||
{
|
||
int target_char;
|
||
int c = *(*string_ptr)++;
|
||
if (c_parse_backslash (c, &target_char))
|
||
return target_char;
|
||
else
|
||
switch (c)
|
||
{
|
||
case '\n':
|
||
return -2;
|
||
case 0:
|
||
(*string_ptr)--;
|
||
return 0;
|
||
case '^':
|
||
{
|
||
/* Remember where this escape sequence started, for reporting
|
||
errors. */
|
||
char *sequence_start_pos = *string_ptr - 1;
|
||
|
||
c = *(*string_ptr)++;
|
||
|
||
if (c == '?')
|
||
{
|
||
/* XXXCHARSET: What is `delete' in the host character set? */
|
||
c = 0177;
|
||
|
||
if (!host_char_to_target (c, &target_char))
|
||
error ("There is no character corresponding to `Delete' "
|
||
"in the target character set `%s'.", host_charset ());
|
||
|
||
return target_char;
|
||
}
|
||
else if (c == '\\')
|
||
target_char = parse_escape (string_ptr);
|
||
else
|
||
{
|
||
if (!host_char_to_target (c, &target_char))
|
||
no_control_char_error (sequence_start_pos, *string_ptr);
|
||
}
|
||
|
||
/* Now target_char is something like `c', and we want to find
|
||
its control-character equivalent. */
|
||
if (!target_char_to_control_char (target_char, &target_char))
|
||
no_control_char_error (sequence_start_pos, *string_ptr);
|
||
|
||
return target_char;
|
||
}
|
||
|
||
/* XXXCHARSET: we need to use isdigit and value-of-digit
|
||
methods of the host character set here. */
|
||
|
||
case '0':
|
||
case '1':
|
||
case '2':
|
||
case '3':
|
||
case '4':
|
||
case '5':
|
||
case '6':
|
||
case '7':
|
||
{
|
||
int i = c - '0';
|
||
int count = 0;
|
||
while (++count < 3)
|
||
{
|
||
c = (**string_ptr);
|
||
if (c >= '0' && c <= '7')
|
||
{
|
||
(*string_ptr)++;
|
||
i *= 8;
|
||
i += c - '0';
|
||
}
|
||
else
|
||
{
|
||
break;
|
||
}
|
||
}
|
||
return i;
|
||
}
|
||
default:
|
||
if (!host_char_to_target (c, &target_char))
|
||
error
|
||
("The escape sequence `\%c' is equivalent to plain `%c', which"
|
||
" has no equivalent\n" "in the `%s' character set.", c, c,
|
||
target_charset ());
|
||
return target_char;
|
||
}
|
||
}
|
||
|
||
/* Print the character C on STREAM as part of the contents of a literal
|
||
string whose delimiter is QUOTER. Note that this routine should only
|
||
be call for printing things which are independent of the language
|
||
of the program being debugged. */
|
||
|
||
static void
|
||
printchar (int c, void (*do_fputs) (const char *, struct ui_file *),
|
||
void (*do_fprintf) (struct ui_file *, const char *, ...),
|
||
struct ui_file *stream, int quoter)
|
||
{
|
||
|
||
c &= 0xFF; /* Avoid sign bit follies */
|
||
|
||
if (c < 0x20 || /* Low control chars */
|
||
(c >= 0x7F && c < 0xA0) || /* DEL, High controls */
|
||
(sevenbit_strings && c >= 0x80))
|
||
{ /* high order bit set */
|
||
switch (c)
|
||
{
|
||
case '\n':
|
||
do_fputs ("\\n", stream);
|
||
break;
|
||
case '\b':
|
||
do_fputs ("\\b", stream);
|
||
break;
|
||
case '\t':
|
||
do_fputs ("\\t", stream);
|
||
break;
|
||
case '\f':
|
||
do_fputs ("\\f", stream);
|
||
break;
|
||
case '\r':
|
||
do_fputs ("\\r", stream);
|
||
break;
|
||
case '\033':
|
||
do_fputs ("\\e", stream);
|
||
break;
|
||
case '\007':
|
||
do_fputs ("\\a", stream);
|
||
break;
|
||
default:
|
||
do_fprintf (stream, "\\%.3o", (unsigned int) c);
|
||
break;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (c == '\\' || c == quoter)
|
||
do_fputs ("\\", stream);
|
||
do_fprintf (stream, "%c", c);
|
||
}
|
||
}
|
||
|
||
/* Print the character C on STREAM as part of the contents of a
|
||
literal string whose delimiter is QUOTER. Note that these routines
|
||
should only be call for printing things which are independent of
|
||
the language of the program being debugged. */
|
||
|
||
void
|
||
fputstr_filtered (const char *str, int quoter, struct ui_file *stream)
|
||
{
|
||
while (*str)
|
||
printchar (*str++, fputs_filtered, fprintf_filtered, stream, quoter);
|
||
}
|
||
|
||
void
|
||
fputstr_unfiltered (const char *str, int quoter, struct ui_file *stream)
|
||
{
|
||
while (*str)
|
||
printchar (*str++, fputs_unfiltered, fprintf_unfiltered, stream, quoter);
|
||
}
|
||
|
||
void
|
||
fputstrn_unfiltered (const char *str, int n, int quoter,
|
||
struct ui_file *stream)
|
||
{
|
||
int i;
|
||
for (i = 0; i < n; i++)
|
||
printchar (str[i], fputs_unfiltered, fprintf_unfiltered, stream, quoter);
|
||
}
|
||
|
||
|
||
/* Number of lines per page or UINT_MAX if paging is disabled. */
|
||
static unsigned int lines_per_page;
|
||
|
||
/* Number of chars per line or UINT_MAX if line folding is disabled. */
|
||
static unsigned int chars_per_line;
|
||
|
||
/* Current count of lines printed on this page, chars on this line. */
|
||
static unsigned int lines_printed, chars_printed;
|
||
|
||
/* Buffer and start column of buffered text, for doing smarter word-
|
||
wrapping. When someone calls wrap_here(), we start buffering output
|
||
that comes through fputs_filtered(). If we see a newline, we just
|
||
spit it out and forget about the wrap_here(). If we see another
|
||
wrap_here(), we spit it out and remember the newer one. If we see
|
||
the end of the line, we spit out a newline, the indent, and then
|
||
the buffered output. */
|
||
|
||
/* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
|
||
are waiting to be output (they have already been counted in chars_printed).
|
||
When wrap_buffer[0] is null, the buffer is empty. */
|
||
static char *wrap_buffer;
|
||
|
||
/* Pointer in wrap_buffer to the next character to fill. */
|
||
static char *wrap_pointer;
|
||
|
||
/* String to indent by if the wrap occurs. Must not be NULL if wrap_column
|
||
is non-zero. */
|
||
static char *wrap_indent;
|
||
|
||
/* Column number on the screen where wrap_buffer begins, or 0 if wrapping
|
||
is not in effect. */
|
||
static int wrap_column;
|
||
|
||
|
||
/* Inialize the number of lines per page and chars per line. */
|
||
|
||
void
|
||
init_page_info (void)
|
||
{
|
||
#if defined(TUI)
|
||
if (!tui_get_command_dimension (&chars_per_line, &lines_per_page))
|
||
#endif
|
||
{
|
||
int rows, cols;
|
||
|
||
#if defined(__GO32__)
|
||
rows = ScreenRows ();
|
||
cols = ScreenCols ();
|
||
lines_per_page = rows;
|
||
chars_per_line = cols;
|
||
#else
|
||
/* Make sure Readline has initialized its terminal settings. */
|
||
rl_reset_terminal (NULL);
|
||
|
||
/* Get the screen size from Readline. */
|
||
rl_get_screen_size (&rows, &cols);
|
||
lines_per_page = rows;
|
||
chars_per_line = cols;
|
||
|
||
/* Readline should have fetched the termcap entry for us. */
|
||
if (tgetnum ("li") < 0 || getenv ("EMACS"))
|
||
{
|
||
/* The number of lines per page is not mentioned in the
|
||
terminal description. This probably means that paging is
|
||
not useful (e.g. emacs shell window), so disable paging. */
|
||
lines_per_page = UINT_MAX;
|
||
}
|
||
|
||
/* FIXME: Get rid of this junk. */
|
||
#if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
|
||
SIGWINCH_HANDLER (SIGWINCH);
|
||
#endif
|
||
|
||
/* If the output is not a terminal, don't paginate it. */
|
||
if (!ui_file_isatty (gdb_stdout))
|
||
lines_per_page = UINT_MAX;
|
||
#endif
|
||
}
|
||
|
||
set_screen_size ();
|
||
set_width ();
|
||
}
|
||
|
||
/* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
|
||
|
||
static void
|
||
set_screen_size (void)
|
||
{
|
||
int rows = lines_per_page;
|
||
int cols = chars_per_line;
|
||
|
||
if (rows <= 0)
|
||
rows = INT_MAX;
|
||
|
||
if (cols <= 0)
|
||
rl_get_screen_size (NULL, &cols);
|
||
|
||
/* Update Readline's idea of the terminal size. */
|
||
rl_set_screen_size (rows, cols);
|
||
}
|
||
|
||
/* Reinitialize WRAP_BUFFER according to the current value of
|
||
CHARS_PER_LINE. */
|
||
|
||
static void
|
||
set_width (void)
|
||
{
|
||
if (chars_per_line == 0)
|
||
init_page_info ();
|
||
|
||
if (!wrap_buffer)
|
||
{
|
||
wrap_buffer = (char *) xmalloc (chars_per_line + 2);
|
||
wrap_buffer[0] = '\0';
|
||
}
|
||
else
|
||
wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2);
|
||
wrap_pointer = wrap_buffer; /* Start it at the beginning. */
|
||
}
|
||
|
||
static void
|
||
set_width_command (char *args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
set_screen_size ();
|
||
set_width ();
|
||
}
|
||
|
||
static void
|
||
set_height_command (char *args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
set_screen_size ();
|
||
}
|
||
|
||
/* Wait, so the user can read what's on the screen. Prompt the user
|
||
to continue by pressing RETURN. */
|
||
|
||
static void
|
||
prompt_for_continue (void)
|
||
{
|
||
char *ignore;
|
||
char cont_prompt[120];
|
||
|
||
if (annotation_level > 1)
|
||
printf_unfiltered ("\n\032\032pre-prompt-for-continue\n");
|
||
|
||
strcpy (cont_prompt,
|
||
"---Type <return> to continue, or q <return> to quit---");
|
||
if (annotation_level > 1)
|
||
strcat (cont_prompt, "\n\032\032prompt-for-continue\n");
|
||
|
||
/* We must do this *before* we call gdb_readline, else it will eventually
|
||
call us -- thinking that we're trying to print beyond the end of the
|
||
screen. */
|
||
reinitialize_more_filter ();
|
||
|
||
immediate_quit++;
|
||
/* On a real operating system, the user can quit with SIGINT.
|
||
But not on GO32.
|
||
|
||
'q' is provided on all systems so users don't have to change habits
|
||
from system to system, and because telling them what to do in
|
||
the prompt is more user-friendly than expecting them to think of
|
||
SIGINT. */
|
||
/* Call readline, not gdb_readline, because GO32 readline handles control-C
|
||
whereas control-C to gdb_readline will cause the user to get dumped
|
||
out to DOS. */
|
||
ignore = gdb_readline_wrapper (cont_prompt);
|
||
|
||
if (annotation_level > 1)
|
||
printf_unfiltered ("\n\032\032post-prompt-for-continue\n");
|
||
|
||
if (ignore)
|
||
{
|
||
char *p = ignore;
|
||
while (*p == ' ' || *p == '\t')
|
||
++p;
|
||
if (p[0] == 'q')
|
||
{
|
||
if (!event_loop_p)
|
||
request_quit (SIGINT);
|
||
else
|
||
async_request_quit (0);
|
||
}
|
||
xfree (ignore);
|
||
}
|
||
immediate_quit--;
|
||
|
||
/* Now we have to do this again, so that GDB will know that it doesn't
|
||
need to save the ---Type <return>--- line at the top of the screen. */
|
||
reinitialize_more_filter ();
|
||
|
||
dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
|
||
}
|
||
|
||
/* Reinitialize filter; ie. tell it to reset to original values. */
|
||
|
||
void
|
||
reinitialize_more_filter (void)
|
||
{
|
||
lines_printed = 0;
|
||
chars_printed = 0;
|
||
}
|
||
|
||
/* Indicate that if the next sequence of characters overflows the line,
|
||
a newline should be inserted here rather than when it hits the end.
|
||
If INDENT is non-null, it is a string to be printed to indent the
|
||
wrapped part on the next line. INDENT must remain accessible until
|
||
the next call to wrap_here() or until a newline is printed through
|
||
fputs_filtered().
|
||
|
||
If the line is already overfull, we immediately print a newline and
|
||
the indentation, and disable further wrapping.
|
||
|
||
If we don't know the width of lines, but we know the page height,
|
||
we must not wrap words, but should still keep track of newlines
|
||
that were explicitly printed.
|
||
|
||
INDENT should not contain tabs, as that will mess up the char count
|
||
on the next line. FIXME.
|
||
|
||
This routine is guaranteed to force out any output which has been
|
||
squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
|
||
used to force out output from the wrap_buffer. */
|
||
|
||
void
|
||
wrap_here (char *indent)
|
||
{
|
||
/* This should have been allocated, but be paranoid anyway. */
|
||
if (!wrap_buffer)
|
||
internal_error (__FILE__, __LINE__, "failed internal consistency check");
|
||
|
||
if (wrap_buffer[0])
|
||
{
|
||
*wrap_pointer = '\0';
|
||
fputs_unfiltered (wrap_buffer, gdb_stdout);
|
||
}
|
||
wrap_pointer = wrap_buffer;
|
||
wrap_buffer[0] = '\0';
|
||
if (chars_per_line == UINT_MAX) /* No line overflow checking */
|
||
{
|
||
wrap_column = 0;
|
||
}
|
||
else if (chars_printed >= chars_per_line)
|
||
{
|
||
puts_filtered ("\n");
|
||
if (indent != NULL)
|
||
puts_filtered (indent);
|
||
wrap_column = 0;
|
||
}
|
||
else
|
||
{
|
||
wrap_column = chars_printed;
|
||
if (indent == NULL)
|
||
wrap_indent = "";
|
||
else
|
||
wrap_indent = indent;
|
||
}
|
||
}
|
||
|
||
/* Print input string to gdb_stdout, filtered, with wrap,
|
||
arranging strings in columns of n chars. String can be
|
||
right or left justified in the column. Never prints
|
||
trailing spaces. String should never be longer than
|
||
width. FIXME: this could be useful for the EXAMINE
|
||
command, which currently doesn't tabulate very well */
|
||
|
||
void
|
||
puts_filtered_tabular (char *string, int width, int right)
|
||
{
|
||
int spaces = 0;
|
||
int stringlen;
|
||
char *spacebuf;
|
||
|
||
gdb_assert (chars_per_line > 0);
|
||
if (chars_per_line == UINT_MAX)
|
||
{
|
||
fputs_filtered (string, gdb_stdout);
|
||
fputs_filtered ("\n", gdb_stdout);
|
||
return;
|
||
}
|
||
|
||
if (((chars_printed - 1) / width + 2) * width >= chars_per_line)
|
||
fputs_filtered ("\n", gdb_stdout);
|
||
|
||
if (width >= chars_per_line)
|
||
width = chars_per_line - 1;
|
||
|
||
stringlen = strlen (string);
|
||
|
||
if (chars_printed > 0)
|
||
spaces = width - (chars_printed - 1) % width - 1;
|
||
if (right)
|
||
spaces += width - stringlen;
|
||
|
||
spacebuf = alloca (spaces + 1);
|
||
spacebuf[spaces] = '\0';
|
||
while (spaces--)
|
||
spacebuf[spaces] = ' ';
|
||
|
||
fputs_filtered (spacebuf, gdb_stdout);
|
||
fputs_filtered (string, gdb_stdout);
|
||
}
|
||
|
||
|
||
/* Ensure that whatever gets printed next, using the filtered output
|
||
commands, starts at the beginning of the line. I.E. if there is
|
||
any pending output for the current line, flush it and start a new
|
||
line. Otherwise do nothing. */
|
||
|
||
void
|
||
begin_line (void)
|
||
{
|
||
if (chars_printed > 0)
|
||
{
|
||
puts_filtered ("\n");
|
||
}
|
||
}
|
||
|
||
|
||
/* Like fputs but if FILTER is true, pause after every screenful.
|
||
|
||
Regardless of FILTER can wrap at points other than the final
|
||
character of a line.
|
||
|
||
Unlike fputs, fputs_maybe_filtered does not return a value.
|
||
It is OK for LINEBUFFER to be NULL, in which case just don't print
|
||
anything.
|
||
|
||
Note that a longjmp to top level may occur in this routine (only if
|
||
FILTER is true) (since prompt_for_continue may do so) so this
|
||
routine should not be called when cleanups are not in place. */
|
||
|
||
static void
|
||
fputs_maybe_filtered (const char *linebuffer, struct ui_file *stream,
|
||
int filter)
|
||
{
|
||
const char *lineptr;
|
||
|
||
if (linebuffer == 0)
|
||
return;
|
||
|
||
/* Don't do any filtering if it is disabled. */
|
||
if ((stream != gdb_stdout) || !pagination_enabled
|
||
|| (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX))
|
||
{
|
||
fputs_unfiltered (linebuffer, stream);
|
||
return;
|
||
}
|
||
|
||
/* Go through and output each character. Show line extension
|
||
when this is necessary; prompt user for new page when this is
|
||
necessary. */
|
||
|
||
lineptr = linebuffer;
|
||
while (*lineptr)
|
||
{
|
||
/* Possible new page. */
|
||
if (filter && (lines_printed >= lines_per_page - 1))
|
||
prompt_for_continue ();
|
||
|
||
while (*lineptr && *lineptr != '\n')
|
||
{
|
||
/* Print a single line. */
|
||
if (*lineptr == '\t')
|
||
{
|
||
if (wrap_column)
|
||
*wrap_pointer++ = '\t';
|
||
else
|
||
fputc_unfiltered ('\t', stream);
|
||
/* Shifting right by 3 produces the number of tab stops
|
||
we have already passed, and then adding one and
|
||
shifting left 3 advances to the next tab stop. */
|
||
chars_printed = ((chars_printed >> 3) + 1) << 3;
|
||
lineptr++;
|
||
}
|
||
else
|
||
{
|
||
if (wrap_column)
|
||
*wrap_pointer++ = *lineptr;
|
||
else
|
||
fputc_unfiltered (*lineptr, stream);
|
||
chars_printed++;
|
||
lineptr++;
|
||
}
|
||
|
||
if (chars_printed >= chars_per_line)
|
||
{
|
||
unsigned int save_chars = chars_printed;
|
||
|
||
chars_printed = 0;
|
||
lines_printed++;
|
||
/* If we aren't actually wrapping, don't output newline --
|
||
if chars_per_line is right, we probably just overflowed
|
||
anyway; if it's wrong, let us keep going. */
|
||
if (wrap_column)
|
||
fputc_unfiltered ('\n', stream);
|
||
|
||
/* Possible new page. */
|
||
if (lines_printed >= lines_per_page - 1)
|
||
prompt_for_continue ();
|
||
|
||
/* Now output indentation and wrapped string */
|
||
if (wrap_column)
|
||
{
|
||
fputs_unfiltered (wrap_indent, stream);
|
||
*wrap_pointer = '\0'; /* Null-terminate saved stuff */
|
||
fputs_unfiltered (wrap_buffer, stream); /* and eject it */
|
||
/* FIXME, this strlen is what prevents wrap_indent from
|
||
containing tabs. However, if we recurse to print it
|
||
and count its chars, we risk trouble if wrap_indent is
|
||
longer than (the user settable) chars_per_line.
|
||
Note also that this can set chars_printed > chars_per_line
|
||
if we are printing a long string. */
|
||
chars_printed = strlen (wrap_indent)
|
||
+ (save_chars - wrap_column);
|
||
wrap_pointer = wrap_buffer; /* Reset buffer */
|
||
wrap_buffer[0] = '\0';
|
||
wrap_column = 0; /* And disable fancy wrap */
|
||
}
|
||
}
|
||
}
|
||
|
||
if (*lineptr == '\n')
|
||
{
|
||
chars_printed = 0;
|
||
wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */
|
||
lines_printed++;
|
||
fputc_unfiltered ('\n', stream);
|
||
lineptr++;
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
fputs_filtered (const char *linebuffer, struct ui_file *stream)
|
||
{
|
||
fputs_maybe_filtered (linebuffer, stream, 1);
|
||
}
|
||
|
||
int
|
||
putchar_unfiltered (int c)
|
||
{
|
||
char buf = c;
|
||
ui_file_write (gdb_stdout, &buf, 1);
|
||
return c;
|
||
}
|
||
|
||
/* Write character C to gdb_stdout using GDB's paging mechanism and return C.
|
||
May return nonlocally. */
|
||
|
||
int
|
||
putchar_filtered (int c)
|
||
{
|
||
return fputc_filtered (c, gdb_stdout);
|
||
}
|
||
|
||
int
|
||
fputc_unfiltered (int c, struct ui_file *stream)
|
||
{
|
||
char buf = c;
|
||
ui_file_write (stream, &buf, 1);
|
||
return c;
|
||
}
|
||
|
||
int
|
||
fputc_filtered (int c, struct ui_file *stream)
|
||
{
|
||
char buf[2];
|
||
|
||
buf[0] = c;
|
||
buf[1] = 0;
|
||
fputs_filtered (buf, stream);
|
||
return c;
|
||
}
|
||
|
||
/* puts_debug is like fputs_unfiltered, except it prints special
|
||
characters in printable fashion. */
|
||
|
||
void
|
||
puts_debug (char *prefix, char *string, char *suffix)
|
||
{
|
||
int ch;
|
||
|
||
/* Print prefix and suffix after each line. */
|
||
static int new_line = 1;
|
||
static int return_p = 0;
|
||
static char *prev_prefix = "";
|
||
static char *prev_suffix = "";
|
||
|
||
if (*string == '\n')
|
||
return_p = 0;
|
||
|
||
/* If the prefix is changing, print the previous suffix, a new line,
|
||
and the new prefix. */
|
||
if ((return_p || (strcmp (prev_prefix, prefix) != 0)) && !new_line)
|
||
{
|
||
fputs_unfiltered (prev_suffix, gdb_stdlog);
|
||
fputs_unfiltered ("\n", gdb_stdlog);
|
||
fputs_unfiltered (prefix, gdb_stdlog);
|
||
}
|
||
|
||
/* Print prefix if we printed a newline during the previous call. */
|
||
if (new_line)
|
||
{
|
||
new_line = 0;
|
||
fputs_unfiltered (prefix, gdb_stdlog);
|
||
}
|
||
|
||
prev_prefix = prefix;
|
||
prev_suffix = suffix;
|
||
|
||
/* Output characters in a printable format. */
|
||
while ((ch = *string++) != '\0')
|
||
{
|
||
switch (ch)
|
||
{
|
||
default:
|
||
if (isprint (ch))
|
||
fputc_unfiltered (ch, gdb_stdlog);
|
||
|
||
else
|
||
fprintf_unfiltered (gdb_stdlog, "\\x%02x", ch & 0xff);
|
||
break;
|
||
|
||
case '\\':
|
||
fputs_unfiltered ("\\\\", gdb_stdlog);
|
||
break;
|
||
case '\b':
|
||
fputs_unfiltered ("\\b", gdb_stdlog);
|
||
break;
|
||
case '\f':
|
||
fputs_unfiltered ("\\f", gdb_stdlog);
|
||
break;
|
||
case '\n':
|
||
new_line = 1;
|
||
fputs_unfiltered ("\\n", gdb_stdlog);
|
||
break;
|
||
case '\r':
|
||
fputs_unfiltered ("\\r", gdb_stdlog);
|
||
break;
|
||
case '\t':
|
||
fputs_unfiltered ("\\t", gdb_stdlog);
|
||
break;
|
||
case '\v':
|
||
fputs_unfiltered ("\\v", gdb_stdlog);
|
||
break;
|
||
}
|
||
|
||
return_p = ch == '\r';
|
||
}
|
||
|
||
/* Print suffix if we printed a newline. */
|
||
if (new_line)
|
||
{
|
||
fputs_unfiltered (suffix, gdb_stdlog);
|
||
fputs_unfiltered ("\n", gdb_stdlog);
|
||
}
|
||
}
|
||
|
||
|
||
/* Print a variable number of ARGS using format FORMAT. If this
|
||
information is going to put the amount written (since the last call
|
||
to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
|
||
call prompt_for_continue to get the users permision to continue.
|
||
|
||
Unlike fprintf, this function does not return a value.
|
||
|
||
We implement three variants, vfprintf (takes a vararg list and stream),
|
||
fprintf (takes a stream to write on), and printf (the usual).
|
||
|
||
Note also that a longjmp to top level may occur in this routine
|
||
(since prompt_for_continue may do so) so this routine should not be
|
||
called when cleanups are not in place. */
|
||
|
||
static void
|
||
vfprintf_maybe_filtered (struct ui_file *stream, const char *format,
|
||
va_list args, int filter)
|
||
{
|
||
char *linebuffer;
|
||
struct cleanup *old_cleanups;
|
||
|
||
linebuffer = xstrvprintf (format, args);
|
||
old_cleanups = make_cleanup (xfree, linebuffer);
|
||
fputs_maybe_filtered (linebuffer, stream, filter);
|
||
do_cleanups (old_cleanups);
|
||
}
|
||
|
||
|
||
void
|
||
vfprintf_filtered (struct ui_file *stream, const char *format, va_list args)
|
||
{
|
||
vfprintf_maybe_filtered (stream, format, args, 1);
|
||
}
|
||
|
||
void
|
||
vfprintf_unfiltered (struct ui_file *stream, const char *format, va_list args)
|
||
{
|
||
char *linebuffer;
|
||
struct cleanup *old_cleanups;
|
||
|
||
linebuffer = xstrvprintf (format, args);
|
||
old_cleanups = make_cleanup (xfree, linebuffer);
|
||
fputs_unfiltered (linebuffer, stream);
|
||
do_cleanups (old_cleanups);
|
||
}
|
||
|
||
void
|
||
vprintf_filtered (const char *format, va_list args)
|
||
{
|
||
vfprintf_maybe_filtered (gdb_stdout, format, args, 1);
|
||
}
|
||
|
||
void
|
||
vprintf_unfiltered (const char *format, va_list args)
|
||
{
|
||
vfprintf_unfiltered (gdb_stdout, format, args);
|
||
}
|
||
|
||
void
|
||
fprintf_filtered (struct ui_file *stream, const char *format, ...)
|
||
{
|
||
va_list args;
|
||
va_start (args, format);
|
||
vfprintf_filtered (stream, format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
void
|
||
fprintf_unfiltered (struct ui_file *stream, const char *format, ...)
|
||
{
|
||
va_list args;
|
||
va_start (args, format);
|
||
vfprintf_unfiltered (stream, format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
/* Like fprintf_filtered, but prints its result indented.
|
||
Called as fprintfi_filtered (spaces, stream, format, ...); */
|
||
|
||
void
|
||
fprintfi_filtered (int spaces, struct ui_file *stream, const char *format,
|
||
...)
|
||
{
|
||
va_list args;
|
||
va_start (args, format);
|
||
print_spaces_filtered (spaces, stream);
|
||
|
||
vfprintf_filtered (stream, format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
|
||
void
|
||
printf_filtered (const char *format, ...)
|
||
{
|
||
va_list args;
|
||
va_start (args, format);
|
||
vfprintf_filtered (gdb_stdout, format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
|
||
void
|
||
printf_unfiltered (const char *format, ...)
|
||
{
|
||
va_list args;
|
||
va_start (args, format);
|
||
vfprintf_unfiltered (gdb_stdout, format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
/* Like printf_filtered, but prints it's result indented.
|
||
Called as printfi_filtered (spaces, format, ...); */
|
||
|
||
void
|
||
printfi_filtered (int spaces, const char *format, ...)
|
||
{
|
||
va_list args;
|
||
va_start (args, format);
|
||
print_spaces_filtered (spaces, gdb_stdout);
|
||
vfprintf_filtered (gdb_stdout, format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
/* Easy -- but watch out!
|
||
|
||
This routine is *not* a replacement for puts()! puts() appends a newline.
|
||
This one doesn't, and had better not! */
|
||
|
||
void
|
||
puts_filtered (const char *string)
|
||
{
|
||
fputs_filtered (string, gdb_stdout);
|
||
}
|
||
|
||
void
|
||
puts_unfiltered (const char *string)
|
||
{
|
||
fputs_unfiltered (string, gdb_stdout);
|
||
}
|
||
|
||
/* Return a pointer to N spaces and a null. The pointer is good
|
||
until the next call to here. */
|
||
char *
|
||
n_spaces (int n)
|
||
{
|
||
char *t;
|
||
static char *spaces = 0;
|
||
static int max_spaces = -1;
|
||
|
||
if (n > max_spaces)
|
||
{
|
||
if (spaces)
|
||
xfree (spaces);
|
||
spaces = (char *) xmalloc (n + 1);
|
||
for (t = spaces + n; t != spaces;)
|
||
*--t = ' ';
|
||
spaces[n] = '\0';
|
||
max_spaces = n;
|
||
}
|
||
|
||
return spaces + max_spaces - n;
|
||
}
|
||
|
||
/* Print N spaces. */
|
||
void
|
||
print_spaces_filtered (int n, struct ui_file *stream)
|
||
{
|
||
fputs_filtered (n_spaces (n), stream);
|
||
}
|
||
|
||
/* C++/ObjC demangler stuff. */
|
||
|
||
/* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
|
||
LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
|
||
If the name is not mangled, or the language for the name is unknown, or
|
||
demangling is off, the name is printed in its "raw" form. */
|
||
|
||
void
|
||
fprintf_symbol_filtered (struct ui_file *stream, char *name,
|
||
enum language lang, int arg_mode)
|
||
{
|
||
char *demangled;
|
||
|
||
if (name != NULL)
|
||
{
|
||
/* If user wants to see raw output, no problem. */
|
||
if (!demangle)
|
||
{
|
||
fputs_filtered (name, stream);
|
||
}
|
||
else
|
||
{
|
||
demangled = language_demangle (language_def (lang), name, arg_mode);
|
||
fputs_filtered (demangled ? demangled : name, stream);
|
||
if (demangled != NULL)
|
||
{
|
||
xfree (demangled);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
|
||
differences in whitespace. Returns 0 if they match, non-zero if they
|
||
don't (slightly different than strcmp()'s range of return values).
|
||
|
||
As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
|
||
This "feature" is useful when searching for matching C++ function names
|
||
(such as if the user types 'break FOO', where FOO is a mangled C++
|
||
function). */
|
||
|
||
int
|
||
strcmp_iw (const char *string1, const char *string2)
|
||
{
|
||
while ((*string1 != '\0') && (*string2 != '\0'))
|
||
{
|
||
while (isspace (*string1))
|
||
{
|
||
string1++;
|
||
}
|
||
while (isspace (*string2))
|
||
{
|
||
string2++;
|
||
}
|
||
if (*string1 != *string2)
|
||
{
|
||
break;
|
||
}
|
||
if (*string1 != '\0')
|
||
{
|
||
string1++;
|
||
string2++;
|
||
}
|
||
}
|
||
return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0');
|
||
}
|
||
|
||
/* This is like strcmp except that it ignores whitespace and treats
|
||
'(' as the first non-NULL character in terms of ordering. Like
|
||
strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
|
||
STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
|
||
according to that ordering.
|
||
|
||
If a list is sorted according to this function and if you want to
|
||
find names in the list that match some fixed NAME according to
|
||
strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
|
||
where this function would put NAME.
|
||
|
||
Here are some examples of why using strcmp to sort is a bad idea:
|
||
|
||
Whitespace example:
|
||
|
||
Say your partial symtab contains: "foo<char *>", "goo". Then, if
|
||
we try to do a search for "foo<char*>", strcmp will locate this
|
||
after "foo<char *>" and before "goo". Then lookup_partial_symbol
|
||
will start looking at strings beginning with "goo", and will never
|
||
see the correct match of "foo<char *>".
|
||
|
||
Parenthesis example:
|
||
|
||
In practice, this is less like to be an issue, but I'll give it a
|
||
shot. Let's assume that '$' is a legitimate character to occur in
|
||
symbols. (Which may well even be the case on some systems.) Then
|
||
say that the partial symbol table contains "foo$" and "foo(int)".
|
||
strcmp will put them in this order, since '$' < '('. Now, if the
|
||
user searches for "foo", then strcmp will sort "foo" before "foo$".
|
||
Then lookup_partial_symbol will notice that strcmp_iw("foo$",
|
||
"foo") is false, so it won't proceed to the actual match of
|
||
"foo(int)" with "foo". */
|
||
|
||
int
|
||
strcmp_iw_ordered (const char *string1, const char *string2)
|
||
{
|
||
while ((*string1 != '\0') && (*string2 != '\0'))
|
||
{
|
||
while (isspace (*string1))
|
||
{
|
||
string1++;
|
||
}
|
||
while (isspace (*string2))
|
||
{
|
||
string2++;
|
||
}
|
||
if (*string1 != *string2)
|
||
{
|
||
break;
|
||
}
|
||
if (*string1 != '\0')
|
||
{
|
||
string1++;
|
||
string2++;
|
||
}
|
||
}
|
||
|
||
switch (*string1)
|
||
{
|
||
/* Characters are non-equal unless they're both '\0'; we want to
|
||
make sure we get the comparison right according to our
|
||
comparison in the cases where one of them is '\0' or '('. */
|
||
case '\0':
|
||
if (*string2 == '\0')
|
||
return 0;
|
||
else
|
||
return -1;
|
||
case '(':
|
||
if (*string2 == '\0')
|
||
return 1;
|
||
else
|
||
return -1;
|
||
default:
|
||
if (*string2 == '(')
|
||
return 1;
|
||
else
|
||
return *string1 - *string2;
|
||
}
|
||
}
|
||
|
||
/* A simple comparison function with opposite semantics to strcmp. */
|
||
|
||
int
|
||
streq (const char *lhs, const char *rhs)
|
||
{
|
||
return !strcmp (lhs, rhs);
|
||
}
|
||
|
||
|
||
/*
|
||
** subset_compare()
|
||
** Answer whether string_to_compare is a full or partial match to
|
||
** template_string. The partial match must be in sequence starting
|
||
** at index 0.
|
||
*/
|
||
int
|
||
subset_compare (char *string_to_compare, char *template_string)
|
||
{
|
||
int match;
|
||
if (template_string != (char *) NULL && string_to_compare != (char *) NULL
|
||
&& strlen (string_to_compare) <= strlen (template_string))
|
||
match =
|
||
(strncmp
|
||
(template_string, string_to_compare, strlen (string_to_compare)) == 0);
|
||
else
|
||
match = 0;
|
||
return match;
|
||
}
|
||
|
||
|
||
static void pagination_on_command (char *arg, int from_tty);
|
||
static void
|
||
pagination_on_command (char *arg, int from_tty)
|
||
{
|
||
pagination_enabled = 1;
|
||
}
|
||
|
||
static void pagination_on_command (char *arg, int from_tty);
|
||
static void
|
||
pagination_off_command (char *arg, int from_tty)
|
||
{
|
||
pagination_enabled = 0;
|
||
}
|
||
|
||
|
||
void
|
||
initialize_utils (void)
|
||
{
|
||
struct cmd_list_element *c;
|
||
|
||
c = add_set_cmd ("width", class_support, var_uinteger, &chars_per_line,
|
||
"Set number of characters gdb thinks are in a line.",
|
||
&setlist);
|
||
add_show_from_set (c, &showlist);
|
||
set_cmd_sfunc (c, set_width_command);
|
||
|
||
c = add_set_cmd ("height", class_support, var_uinteger, &lines_per_page,
|
||
"Set number of lines gdb thinks are in a page.", &setlist);
|
||
add_show_from_set (c, &showlist);
|
||
set_cmd_sfunc (c, set_height_command);
|
||
|
||
init_page_info ();
|
||
|
||
add_show_from_set
|
||
(add_set_cmd ("demangle", class_support, var_boolean,
|
||
(char *) &demangle,
|
||
"Set demangling of encoded C++/ObjC names when displaying symbols.",
|
||
&setprintlist), &showprintlist);
|
||
|
||
add_show_from_set
|
||
(add_set_cmd ("pagination", class_support,
|
||
var_boolean, (char *) &pagination_enabled,
|
||
"Set state of pagination.", &setlist), &showlist);
|
||
|
||
if (xdb_commands)
|
||
{
|
||
add_com ("am", class_support, pagination_on_command,
|
||
"Enable pagination");
|
||
add_com ("sm", class_support, pagination_off_command,
|
||
"Disable pagination");
|
||
}
|
||
|
||
add_show_from_set
|
||
(add_set_cmd ("sevenbit-strings", class_support, var_boolean,
|
||
(char *) &sevenbit_strings,
|
||
"Set printing of 8-bit characters in strings as \\nnn.",
|
||
&setprintlist), &showprintlist);
|
||
|
||
add_show_from_set
|
||
(add_set_cmd ("asm-demangle", class_support, var_boolean,
|
||
(char *) &asm_demangle,
|
||
"Set demangling of C++/ObjC names in disassembly listings.",
|
||
&setprintlist), &showprintlist);
|
||
}
|
||
|
||
/* Machine specific function to handle SIGWINCH signal. */
|
||
|
||
#ifdef SIGWINCH_HANDLER_BODY
|
||
SIGWINCH_HANDLER_BODY
|
||
#endif
|
||
/* print routines to handle variable size regs, etc. */
|
||
/* temporary storage using circular buffer */
|
||
#define NUMCELLS 16
|
||
#define CELLSIZE 32
|
||
static char *
|
||
get_cell (void)
|
||
{
|
||
static char buf[NUMCELLS][CELLSIZE];
|
||
static int cell = 0;
|
||
if (++cell >= NUMCELLS)
|
||
cell = 0;
|
||
return buf[cell];
|
||
}
|
||
|
||
int
|
||
strlen_paddr (void)
|
||
{
|
||
return (TARGET_ADDR_BIT / 8 * 2);
|
||
}
|
||
|
||
char *
|
||
paddr (CORE_ADDR addr)
|
||
{
|
||
return phex (addr, TARGET_ADDR_BIT / 8);
|
||
}
|
||
|
||
char *
|
||
paddr_nz (CORE_ADDR addr)
|
||
{
|
||
return phex_nz (addr, TARGET_ADDR_BIT / 8);
|
||
}
|
||
|
||
static void
|
||
decimal2str (char *paddr_str, char *sign, ULONGEST addr)
|
||
{
|
||
/* steal code from valprint.c:print_decimal(). Should this worry
|
||
about the real size of addr as the above does? */
|
||
unsigned long temp[3];
|
||
int i = 0;
|
||
do
|
||
{
|
||
temp[i] = addr % (1000 * 1000 * 1000);
|
||
addr /= (1000 * 1000 * 1000);
|
||
i++;
|
||
}
|
||
while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0])));
|
||
switch (i)
|
||
{
|
||
case 1:
|
||
sprintf (paddr_str, "%s%lu", sign, temp[0]);
|
||
break;
|
||
case 2:
|
||
sprintf (paddr_str, "%s%lu%09lu", sign, temp[1], temp[0]);
|
||
break;
|
||
case 3:
|
||
sprintf (paddr_str, "%s%lu%09lu%09lu", sign, temp[2], temp[1], temp[0]);
|
||
break;
|
||
default:
|
||
internal_error (__FILE__, __LINE__,
|
||
"failed internal consistency check");
|
||
}
|
||
}
|
||
|
||
char *
|
||
paddr_u (CORE_ADDR addr)
|
||
{
|
||
char *paddr_str = get_cell ();
|
||
decimal2str (paddr_str, "", addr);
|
||
return paddr_str;
|
||
}
|
||
|
||
char *
|
||
paddr_d (LONGEST addr)
|
||
{
|
||
char *paddr_str = get_cell ();
|
||
if (addr < 0)
|
||
decimal2str (paddr_str, "-", -addr);
|
||
else
|
||
decimal2str (paddr_str, "", addr);
|
||
return paddr_str;
|
||
}
|
||
|
||
/* eliminate warning from compiler on 32-bit systems */
|
||
static int thirty_two = 32;
|
||
|
||
char *
|
||
phex (ULONGEST l, int sizeof_l)
|
||
{
|
||
char *str;
|
||
switch (sizeof_l)
|
||
{
|
||
case 8:
|
||
str = get_cell ();
|
||
sprintf (str, "%08lx%08lx",
|
||
(unsigned long) (l >> thirty_two),
|
||
(unsigned long) (l & 0xffffffff));
|
||
break;
|
||
case 4:
|
||
str = get_cell ();
|
||
sprintf (str, "%08lx", (unsigned long) l);
|
||
break;
|
||
case 2:
|
||
str = get_cell ();
|
||
sprintf (str, "%04x", (unsigned short) (l & 0xffff));
|
||
break;
|
||
default:
|
||
str = phex (l, sizeof (l));
|
||
break;
|
||
}
|
||
return str;
|
||
}
|
||
|
||
char *
|
||
phex_nz (ULONGEST l, int sizeof_l)
|
||
{
|
||
char *str;
|
||
switch (sizeof_l)
|
||
{
|
||
case 8:
|
||
{
|
||
unsigned long high = (unsigned long) (l >> thirty_two);
|
||
str = get_cell ();
|
||
if (high == 0)
|
||
sprintf (str, "%lx", (unsigned long) (l & 0xffffffff));
|
||
else
|
||
sprintf (str, "%lx%08lx", high, (unsigned long) (l & 0xffffffff));
|
||
break;
|
||
}
|
||
case 4:
|
||
str = get_cell ();
|
||
sprintf (str, "%lx", (unsigned long) l);
|
||
break;
|
||
case 2:
|
||
str = get_cell ();
|
||
sprintf (str, "%x", (unsigned short) (l & 0xffff));
|
||
break;
|
||
default:
|
||
str = phex_nz (l, sizeof (l));
|
||
break;
|
||
}
|
||
return str;
|
||
}
|
||
|
||
|
||
/* Convert a CORE_ADDR into a string. */
|
||
const char *
|
||
core_addr_to_string (const CORE_ADDR addr)
|
||
{
|
||
char *str = get_cell ();
|
||
strcpy (str, "0x");
|
||
strcat (str, phex (addr, sizeof (addr)));
|
||
return str;
|
||
}
|
||
|
||
const char *
|
||
core_addr_to_string_nz (const CORE_ADDR addr)
|
||
{
|
||
char *str = get_cell ();
|
||
strcpy (str, "0x");
|
||
strcat (str, phex_nz (addr, sizeof (addr)));
|
||
return str;
|
||
}
|
||
|
||
/* Convert a string back into a CORE_ADDR. */
|
||
CORE_ADDR
|
||
string_to_core_addr (const char *my_string)
|
||
{
|
||
CORE_ADDR addr = 0;
|
||
if (my_string[0] == '0' && tolower (my_string[1]) == 'x')
|
||
{
|
||
/* Assume that it is in decimal. */
|
||
int i;
|
||
for (i = 2; my_string[i] != '\0'; i++)
|
||
{
|
||
if (isdigit (my_string[i]))
|
||
addr = (my_string[i] - '0') + (addr * 16);
|
||
else if (isxdigit (my_string[i]))
|
||
addr = (tolower (my_string[i]) - 'a' + 0xa) + (addr * 16);
|
||
else
|
||
internal_error (__FILE__, __LINE__, "invalid hex");
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Assume that it is in decimal. */
|
||
int i;
|
||
for (i = 0; my_string[i] != '\0'; i++)
|
||
{
|
||
if (isdigit (my_string[i]))
|
||
addr = (my_string[i] - '0') + (addr * 10);
|
||
else
|
||
internal_error (__FILE__, __LINE__, "invalid decimal");
|
||
}
|
||
}
|
||
return addr;
|
||
}
|
||
|
||
char *
|
||
gdb_realpath (const char *filename)
|
||
{
|
||
/* Method 1: The system has a compile time upper bound on a filename
|
||
path. Use that and realpath() to canonicalize the name. This is
|
||
the most common case. Note that, if there isn't a compile time
|
||
upper bound, you want to avoid realpath() at all costs. */
|
||
#if defined(HAVE_REALPATH)
|
||
{
|
||
# if defined (PATH_MAX)
|
||
char buf[PATH_MAX];
|
||
# define USE_REALPATH
|
||
# elif defined (MAXPATHLEN)
|
||
char buf[MAXPATHLEN];
|
||
# define USE_REALPATH
|
||
# endif
|
||
# if defined (USE_REALPATH)
|
||
const char *rp = realpath (filename, buf);
|
||
if (rp == NULL)
|
||
rp = filename;
|
||
return xstrdup (rp);
|
||
# endif
|
||
}
|
||
#endif /* HAVE_REALPATH */
|
||
|
||
/* Method 2: The host system (i.e., GNU) has the function
|
||
canonicalize_file_name() which malloc's a chunk of memory and
|
||
returns that, use that. */
|
||
#if defined(HAVE_CANONICALIZE_FILE_NAME)
|
||
{
|
||
char *rp = canonicalize_file_name (filename);
|
||
if (rp == NULL)
|
||
return xstrdup (filename);
|
||
else
|
||
return rp;
|
||
}
|
||
#endif
|
||
|
||
/* FIXME: cagney/2002-11-13:
|
||
|
||
Method 2a: Use realpath() with a NULL buffer. Some systems, due
|
||
to the problems described in in method 3, have modified their
|
||
realpath() implementation so that it will allocate a buffer when
|
||
NULL is passed in. Before this can be used, though, some sort of
|
||
configure time test would need to be added. Otherwize the code
|
||
will likely core dump. */
|
||
|
||
/* Method 3: Now we're getting desperate! The system doesn't have a
|
||
compile time buffer size and no alternative function. Query the
|
||
OS, using pathconf(), for the buffer limit. Care is needed
|
||
though, some systems do not limit PATH_MAX (return -1 for
|
||
pathconf()) making it impossible to pass a correctly sized buffer
|
||
to realpath() (it could always overflow). On those systems, we
|
||
skip this. */
|
||
#if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
|
||
{
|
||
/* Find out the max path size. */
|
||
long path_max = pathconf ("/", _PC_PATH_MAX);
|
||
if (path_max > 0)
|
||
{
|
||
/* PATH_MAX is bounded. */
|
||
char *buf = alloca (path_max);
|
||
char *rp = realpath (filename, buf);
|
||
return xstrdup (rp ? rp : filename);
|
||
}
|
||
}
|
||
#endif
|
||
|
||
/* This system is a lost cause, just dup the buffer. */
|
||
return xstrdup (filename);
|
||
}
|
||
|
||
/* Return a copy of FILENAME, with its directory prefix canonicalized
|
||
by gdb_realpath. */
|
||
|
||
char *
|
||
xfullpath (const char *filename)
|
||
{
|
||
const char *base_name = lbasename (filename);
|
||
char *dir_name;
|
||
char *real_path;
|
||
char *result;
|
||
|
||
/* Extract the basename of filename, and return immediately
|
||
a copy of filename if it does not contain any directory prefix. */
|
||
if (base_name == filename)
|
||
return xstrdup (filename);
|
||
|
||
dir_name = alloca ((size_t) (base_name - filename + 2));
|
||
/* Allocate enough space to store the dir_name + plus one extra
|
||
character sometimes needed under Windows (see below), and
|
||
then the closing \000 character */
|
||
strncpy (dir_name, filename, base_name - filename);
|
||
dir_name[base_name - filename] = '\000';
|
||
|
||
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
|
||
/* We need to be careful when filename is of the form 'd:foo', which
|
||
is equivalent of d:./foo, which is totally different from d:/foo. */
|
||
if (strlen (dir_name) == 2 && isalpha (dir_name[0]) && dir_name[1] == ':')
|
||
{
|
||
dir_name[2] = '.';
|
||
dir_name[3] = '\000';
|
||
}
|
||
#endif
|
||
|
||
/* Canonicalize the directory prefix, and build the resulting
|
||
filename. If the dirname realpath already contains an ending
|
||
directory separator, avoid doubling it. */
|
||
real_path = gdb_realpath (dir_name);
|
||
if (IS_DIR_SEPARATOR (real_path[strlen (real_path) - 1]))
|
||
result = concat (real_path, base_name, NULL);
|
||
else
|
||
result = concat (real_path, SLASH_STRING, base_name, NULL);
|
||
|
||
xfree (real_path);
|
||
return result;
|
||
}
|
||
|
||
|
||
/* This is the 32-bit CRC function used by the GNU separate debug
|
||
facility. An executable may contain a section named
|
||
.gnu_debuglink, which holds the name of a separate executable file
|
||
containing its debug info, and a checksum of that file's contents,
|
||
computed using this function. */
|
||
unsigned long
|
||
gnu_debuglink_crc32 (unsigned long crc, unsigned char *buf, size_t len)
|
||
{
|
||
static const unsigned long crc32_table[256] = {
|
||
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
|
||
0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
|
||
0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
|
||
0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
|
||
0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
|
||
0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
|
||
0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
|
||
0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
|
||
0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
|
||
0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
|
||
0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
|
||
0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
|
||
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
|
||
0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
|
||
0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
|
||
0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
|
||
0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
|
||
0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
|
||
0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
|
||
0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
|
||
0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
|
||
0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
|
||
0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
|
||
0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
|
||
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
|
||
0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
|
||
0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
|
||
0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
|
||
0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
|
||
0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
|
||
0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
|
||
0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
|
||
0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
|
||
0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
|
||
0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
|
||
0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
|
||
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
|
||
0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
|
||
0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
|
||
0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
|
||
0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
|
||
0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
|
||
0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
|
||
0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
|
||
0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
|
||
0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
|
||
0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
|
||
0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
|
||
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
|
||
0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
|
||
0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
|
||
0x2d02ef8d
|
||
};
|
||
unsigned char *end;
|
||
|
||
crc = ~crc & 0xffffffff;
|
||
for (end = buf + len; buf < end; ++buf)
|
||
crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8);
|
||
return ~crc & 0xffffffff;;
|
||
}
|
||
|
||
ULONGEST
|
||
align_up (ULONGEST v, int n)
|
||
{
|
||
/* Check that N is really a power of two. */
|
||
gdb_assert (n && (n & (n-1)) == 0);
|
||
return (v + n - 1) & -n;
|
||
}
|
||
|
||
ULONGEST
|
||
align_down (ULONGEST v, int n)
|
||
{
|
||
/* Check that N is really a power of two. */
|
||
gdb_assert (n && (n & (n-1)) == 0);
|
||
return (v & -n);
|
||
}
|