/* General utility routines for GDB, the GNU debugger.
- Copyright 1986, 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+ Copyright 1986, 1989, 1990-1992, 1995, 1996, 1998, 2000
+ Free Software Foundation, Inc.
-This file is part of GDB.
+ This file is part of GDB.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#include "defs.h"
-#if !defined(__GO32__)
-#include <sys/ioctl.h>
-#include <sys/param.h>
-#include <pwd.h>
-#endif
-#include <varargs.h>
#include <ctype.h>
-#include <string.h>
+#include "gdb_string.h"
+#include "event-top.h"
+
+#ifdef HAVE_CURSES_H
+#include <curses.h>
+#endif
+#ifdef HAVE_TERM_H
+#include <term.h>
+#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 "signals.h"
#include "gdbcmd.h"
-#include "terminal.h"
+#include "serial.h"
#include "bfd.h"
#include "target.h"
#include "demangle.h"
+#include "expression.h"
+#include "language.h"
+#include "annotate.h"
-/* Prototypes for local functions */
+#include <readline/readline.h>
-#if !defined (NO_MALLOC_CHECK)
+#undef XMALLOC
+#define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE)))
-static void
-malloc_botch PARAMS ((void));
+/* readline defines this. */
+#undef savestring
-#endif /* NO_MALLOC_CHECK */
+void (*error_begin_hook) (void);
-static void
-fatal_dump_core (); /* Can't prototype with <varargs.h> usage... */
+/* Holds the last error message issued by gdb */
-static void
-prompt_for_continue PARAMS ((void));
+static struct ui_file *gdb_lasterr;
-static void
-set_width_command PARAMS ((char *, int, struct cmd_list_element *));
+/* Prototypes for local functions */
+
+static void vfprintf_maybe_filtered (struct ui_file *, const char *,
+ va_list, int);
-/* If this definition isn't overridden by the header files, assume
- that isatty and fileno exist on this system. */
-#ifndef ISATTY
-#define ISATTY(FP) (isatty (fileno (FP)))
+static void fputs_maybe_filtered (const char *, struct ui_file *, int);
+
+#if defined (USE_MMALLOC) && !defined (NO_MMCHECK)
+static void malloc_botch (void);
#endif
+static void prompt_for_continue (void);
+
+static void set_width_command (char *, int, struct cmd_list_element *);
+
+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;
+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. */
+/* 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;
/* 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;
\f
+
/* 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 (function, arg)
- void (*function) PARAMS ((PTR));
- PTR arg;
+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 (arg)
+ void *arg;
+{
+ freeargv ((char **) arg);
+}
+
+struct cleanup *
+make_cleanup_freeargv (arg)
+ 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)
+{
+ close ((int) arg);
+}
+
+struct cleanup *
+make_cleanup_close (int fd)
+{
+ /* int into void*. Outch!! */
+ return make_cleanup (do_close_cleanup, (void *) 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)
{
register struct cleanup *new
- = (struct cleanup *) xmalloc (sizeof (struct cleanup));
- register struct cleanup *old_chain = cleanup_chain;
+ = (struct cleanup *) xmalloc (sizeof (struct cleanup));
+ register struct cleanup *old_chain = *pmy_chain;
- new->next = cleanup_chain;
+ new->next = *pmy_chain;
new->function = function;
new->arg = arg;
- cleanup_chain = new;
+ *pmy_chain = new;
return old_chain;
}
void
do_cleanups (old_chain)
register struct cleanup *old_chain;
+{
+ do_my_cleanups (&cleanup_chain, old_chain);
+}
+
+void
+do_final_cleanups (old_chain)
+ register struct cleanup *old_chain;
+{
+ do_my_cleanups (&final_cleanup_chain, old_chain);
+}
+
+void
+do_run_cleanups (old_chain)
+ register struct cleanup *old_chain;
+{
+ do_my_cleanups (&run_cleanup_chain, old_chain);
+}
+
+void
+do_exec_cleanups (old_chain)
+ register struct cleanup *old_chain;
+{
+ do_my_cleanups (&exec_cleanup_chain, old_chain);
+}
+
+void
+do_exec_error_cleanups (old_chain)
+ register struct cleanup *old_chain;
+{
+ do_my_cleanups (&exec_error_cleanup_chain, old_chain);
+}
+
+void
+do_my_cleanups (pmy_chain, old_chain)
+ register struct cleanup **pmy_chain;
+ register struct cleanup *old_chain;
{
register struct cleanup *ptr;
- while ((ptr = cleanup_chain) != old_chain)
+ while ((ptr = *pmy_chain) != old_chain)
{
- cleanup_chain = ptr->next; /* Do this first incase recursion */
+ *pmy_chain = ptr->next; /* Do this first incase recursion */
(*ptr->function) (ptr->arg);
free (ptr);
}
void
discard_cleanups (old_chain)
register struct cleanup *old_chain;
+{
+ discard_my_cleanups (&cleanup_chain, old_chain);
+}
+
+void
+discard_final_cleanups (old_chain)
+ register struct cleanup *old_chain;
+{
+ discard_my_cleanups (&final_cleanup_chain, old_chain);
+}
+
+void
+discard_exec_error_cleanups (old_chain)
+ register struct cleanup *old_chain;
+{
+ discard_my_cleanups (&exec_error_cleanup_chain, old_chain);
+}
+
+void
+discard_my_cleanups (pmy_chain, old_chain)
+ register struct cleanup **pmy_chain;
+ register struct cleanup *old_chain;
{
register struct cleanup *ptr;
- while ((ptr = cleanup_chain) != old_chain)
+ while ((ptr = *pmy_chain) != old_chain)
{
- cleanup_chain = ptr->next;
- free ((PTR)ptr);
+ *pmy_chain = ptr->next;
+ free (ptr);
}
}
struct cleanup *
save_cleanups ()
{
- struct cleanup *old_chain = cleanup_chain;
+ return save_my_cleanups (&cleanup_chain);
+}
+
+struct cleanup *
+save_final_cleanups ()
+{
+ return save_my_cleanups (&final_cleanup_chain);
+}
+
+struct cleanup *
+save_my_cleanups (pmy_chain)
+ struct cleanup **pmy_chain;
+{
+ struct cleanup *old_chain = *pmy_chain;
- cleanup_chain = 0;
+ *pmy_chain = 0;
return old_chain;
}
restore_cleanups (chain)
struct cleanup *chain;
{
- cleanup_chain = chain;
+ restore_my_cleanups (&cleanup_chain, chain);
+}
+
+void
+restore_final_cleanups (chain)
+ struct cleanup *chain;
+{
+ restore_my_cleanups (&final_cleanup_chain, chain);
+}
+
+void
+restore_my_cleanups (pmy_chain, chain)
+ 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);
+ foo = xmalloc (...);
+ old_chain = make_cleanup (free_current_contents, &foo);
to arrange to free the object thus allocated. */
void
-free_current_contents (location)
- char **location;
+free_current_contents (void *ptr)
{
- free (*location);
+ void **location = ptr;
+ if (location == NULL)
+ internal_error ("free_current_contents: NULL pointer");
+ if (*location != NULL)
+ {
+ free (*location);
+ *location = NULL;
+ }
}
/* Provide a known function that does nothing, to use as a base for
/* ARGSUSED */
void
-null_cleanup (arg)
- char **arg;
+null_cleanup (void *arg)
+{
+}
+
+/* Add a continuation to the continuation list, the gloabl list
+ cmd_continuation. The new continuation will be added at the front.*/
+void
+add_continuation (continuation_hook, arg_list)
+ 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 ()
+{
+ 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;
+ free (saved_continuation);
+ }
+}
+
+/* Walk down the cmd_continuation list, and get rid of all the
+ continuations. */
+void
+discard_all_continuations ()
+{
+ struct continuation *continuation_ptr;
+
+ while (cmd_continuation)
+ {
+ continuation_ptr = cmd_continuation;
+ cmd_continuation = continuation_ptr->next;
+ free (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 (continuation_hook, arg_list)
+ 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 ()
+{
+ 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;
+ free (saved_continuation);
+ }
+}
+
+/* Walk down the cmd_continuation list, and get rid of all the
+ continuations. */
+void
+discard_all_intermediate_continuations ()
+{
+ struct continuation *continuation_ptr;
+
+ while (intermediate_continuation)
+ {
+ continuation_ptr = intermediate_continuation;
+ intermediate_continuation = continuation_ptr->next;
+ free (continuation_ptr);
+ }
}
\f
-/* Provide a hook for modules wishing to print their own warning messages
- to set up the terminal state in a compatible way, without them having
- to import all the target_<...> macros. */
+
+/* Print a warning message. Way to use this is to call warning_begin,
+ output the warning message (use unfiltered output to gdb_stderr),
+ ending in a newline. There is not currently a warning_end that you
+ call afterwards, but such a thing might be added if it is useful
+ for a GUI to separate warning messages from other output.
+
+ FIXME: Why do warnings use unfiltered output and errors filtered?
+ Is this anything other than a historical accident? */
void
-warning_setup ()
+warning_begin ()
{
target_terminal_ours ();
- wrap_here(""); /* Force out any buffered output */
- fflush (stdout);
+ wrap_here (""); /* Force out any buffered output */
+ gdb_flush (gdb_stdout);
+ if (warning_pre_print)
+ fprintf_unfiltered (gdb_stderr, warning_pre_print);
}
/* 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. */
+ does not force the return to command level. */
-/* VARARGS */
void
-warning (va_alist)
- va_dcl
+warning (const char *string,...)
{
va_list args;
- char *string;
+ va_start (args, string);
+ if (warning_hook)
+ (*warning_hook) (string, args);
+ else
+ {
+ warning_begin ();
+ vfprintf_unfiltered (gdb_stderr, string, args);
+ fprintf_unfiltered (gdb_stderr, "\n");
+ va_end (args);
+ }
+}
+
+/* Start the printing of an error message. Way to use this is to call
+ this, output the error message (use filtered output to gdb_stderr
+ (FIXME: Some callers, like memory_error, use gdb_stdout)), ending
+ in a newline, and then call return_to_top_level (RETURN_ERROR).
+ error() provides a convenient way to do this for the special case
+ that the error message can be formatted with a single printf call,
+ but this is more general. */
+void
+error_begin ()
+{
+ if (error_begin_hook)
+ error_begin_hook ();
- va_start (args);
target_terminal_ours ();
- wrap_here(""); /* Force out any buffered output */
- fflush (stdout);
- if (warning_pre_print)
- fprintf (stderr, warning_pre_print);
- string = va_arg (args, char *);
- vfprintf (stderr, string, args);
- fprintf (stderr, "\n");
- va_end (args);
+ wrap_here (""); /* Force out any buffered output */
+ gdb_flush (gdb_stdout);
+
+ annotate_error_begin ();
+
+ if (error_pre_print)
+ fprintf_filtered (gdb_stderr, error_pre_print);
}
/* 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. */
-/* VARARGS */
NORETURN void
-error (va_alist)
- va_dcl
+verror (const char *string, va_list args)
{
- va_list args;
- char *string;
+ char *err_string;
+ struct cleanup *err_string_cleanup;
+ /* FIXME: cagney/1999-11-10: All error calls should come here.
+ Unfortunatly some code uses the sequence: error_begin(); print
+ error message; return_to_top_level. That code should be
+ flushed. */
+ error_begin ();
+ /* NOTE: It's tempting to just do the following...
+ vfprintf_filtered (gdb_stderr, string, args);
+ and then follow with a similar looking statement to cause the message
+ to also go to gdb_lasterr. But if we do this, we'll be traversing the
+ va_list twice which works on some platforms and fails miserably on
+ others. */
+ /* Save it as the last error */
+ ui_file_rewind (gdb_lasterr);
+ vfprintf_filtered (gdb_lasterr, string, args);
+ /* Retrieve the last error and print it to gdb_stderr */
+ err_string = error_last_message ();
+ err_string_cleanup = make_cleanup (free, err_string);
+ fputs_filtered (err_string, gdb_stderr);
+ fprintf_filtered (gdb_stderr, "\n");
+ do_cleanups (err_string_cleanup);
+ return_to_top_level (RETURN_ERROR);
+}
- va_start (args);
- target_terminal_ours ();
- wrap_here(""); /* Force out any buffered output */
- fflush (stdout);
- if (error_pre_print)
- fprintf_filtered (stderr, error_pre_print);
- string = va_arg (args, char *);
- vfprintf_filtered (stderr, string, args);
- fprintf_filtered (stderr, "\n");
+NORETURN void
+error (const char *string,...)
+{
+ va_list args;
+ va_start (args, string);
+ verror (string, args);
va_end (args);
- return_to_top_level ();
}
-/* Print an error message and exit reporting failure.
- This is for a error that we cannot continue from.
- The arguments are printed a la printf.
+NORETURN void
+error_stream (struct ui_file *stream)
+{
+ long size;
+ char *msg = ui_file_xstrdup (stream, &size);
+ make_cleanup (free, msg);
+ error ("%s", msg);
+}
- This function cannot be declared volatile (NORETURN) in an
- ANSI environment because exit() is not declared volatile. */
+/* Get the last error message issued by gdb */
-/* VARARGS */
-NORETURN void
-fatal (va_alist)
- va_dcl
+char *
+error_last_message (void)
{
- va_list args;
- char *string;
+ long len;
+ return ui_file_xstrdup (gdb_lasterr, &len);
+}
+
+/* This is to be called by main() at the very beginning */
- va_start (args);
- string = va_arg (args, char *);
- fprintf (stderr, "\ngdb: ");
- vfprintf (stderr, string, args);
- fprintf (stderr, "\n");
- va_end (args);
- exit (1);
+void
+error_init (void)
+{
+ gdb_lasterr = mem_fileopen ();
}
-/* Print an error message and exit, dumping core.
- The arguments are printed a la printf (). */
+/* Print a message reporting an internal error. Ask the user if they
+ want to continue, dump core, or just exit. */
-/* VARARGS */
-static void
-fatal_dump_core (va_alist)
- va_dcl
+NORETURN void
+internal_verror (const char *fmt, va_list ap)
{
- va_list args;
- char *string;
-
- va_start (args);
- string = va_arg (args, char *);
- /* "internal error" is always correct, since GDB should never dump
- core, no matter what the input. */
- fprintf (stderr, "\ngdb internal error: ");
- vfprintf (stderr, string, args);
- fprintf (stderr, "\n");
- va_end (args);
+ static char msg[] = "Internal GDB error: recursive internal error.\n";
+ static int dejavu = 0;
+ int continue_p;
+ int dump_core_p;
+
+ /* don't allow infinite error recursion. */
+ switch (dejavu)
+ {
+ case 0:
+ dejavu = 1;
+ break;
+ case 1:
+ dejavu = 2;
+ fputs_unfiltered (msg, gdb_stderr);
+ abort ();
+ default:
+ dejavu = 3;
+ write (STDERR_FILENO, msg, sizeof (msg));
+ exit (1);
+ }
+
+ /* Try to get the message out */
+ target_terminal_ours ();
+ fputs_unfiltered ("gdb-internal-error: ", gdb_stderr);
+ vfprintf_unfiltered (gdb_stderr, fmt, ap);
+ fputs_unfiltered ("\n", gdb_stderr);
+
+ /* Default (no case) is to quit GDB. When in batch mode this
+ lessens the likelhood of GDB going into an infinate loop. */
+ continue_p = query ("\
+An internal GDB error was detected. This may make make further\n\
+debugging unreliable. Continue this debugging session? ");
+
+ /* Default (no case) is to not dump core. Lessen the chance of GDB
+ leaving random core files around. */
+ dump_core_p = query ("\
+Create a core file containing the current state of GDB? ");
+
+ if (continue_p)
+ {
+ if (dump_core_p)
+ {
+ if (fork () == 0)
+ abort ();
+ }
+ }
+ else
+ {
+ if (dump_core_p)
+ abort ();
+ else
+ exit (1);
+ }
+
+ dejavu = 0;
+ return_to_top_level (RETURN_ERROR);
+}
+
+NORETURN void
+internal_error (char *string, ...)
+{
+ va_list ap;
+ va_start (ap, string);
- signal (SIGQUIT, SIG_DFL);
- kill (getpid (), SIGQUIT);
- /* We should never get here, but just in case... */
- exit (1);
+ internal_verror (string, ap);
+ va_end (ap);
}
/* The strerror() function can return NULL for errno values that are
as the file name for which the error was encountered.
Then return to command level. */
-void
+NORETURN void
perror_with_name (string)
char *string;
{
/* 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_error = no_error;
+ bfd_set_error (bfd_error_no_error);
errno = 0;
error ("%s.", combined);
strcat (combined, ": ");
strcat (combined, err);
- fprintf (stderr, "%s.\n", combined);
+ /* 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 ()
{
+ serial_t gdb_stdout_serial = serial_fdopen (1);
+
target_terminal_ours ();
- wrap_here ((char *)0); /* Force out any pending output */
-#if !defined(__GO32__)
-#ifdef HAVE_TERMIO
- ioctl (fileno (stdout), TCFLSH, 1);
-#else /* not HAVE_TERMIO */
- ioctl (fileno (stdout), TIOCFLUSH, 0);
-#endif /* not HAVE_TERMIO */
-#ifdef TIOCGPGRP
- error ("Quit");
+
+ /* 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)
+ fprintf_unfiltered (gdb_stderr, quit_pre_print);
+
+#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
- error ("Quit (expect signal %d when inferior is resumed)", SIGINT);
-#endif /* TIOCGPGRP */
+ 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
+ return_to_top_level (RETURN_QUIT);
}
-/* Control C comes here */
-void
-request_quit (signo)
- int signo;
-{
- quit_flag = 1;
+#if defined(_MSC_VER) /* should test for wingdb instead? */
-#ifdef USG
- /* Restore the signal handler. */
- signal (signo, request_quit);
-#endif
+/*
+ * Windows translates all keyboard and mouse events
+ * into a message which is appended to the message
+ * queue for the process.
+ */
- if (immediate_quit)
- quit ();
+void
+notice_quit ()
+{
+ int k = win32pollquit ();
+ if (k == 1)
+ quit_flag = 1;
+ else if (k == 2)
+ immediate_quit = 1;
}
+#else /* !defined(_MSC_VER) */
+
+void
+notice_quit ()
+{
+ /* Done by signals */
+}
+
+#endif /* !defined(_MSC_VER) */
+
+/* Control C comes here */
+void
+request_quit (signo)
+ 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);
+
+#ifdef REQUEST_QUIT
+ REQUEST_QUIT;
+#else
+ if (immediate_quit)
+ quit ();
+#endif
+}
\f
/* Memory management stuff (malloc friends). */
-#if defined (NO_MMALLOC)
+/* Make a substitute size_t for non-ANSI compilers. */
+
+#ifndef HAVE_STDDEF_H
+#ifndef size_t
+#define size_t unsigned int
+#endif
+#endif
+
+#if !defined (USE_MMALLOC)
+
+PTR
+mcalloc (PTR md, size_t number, size_t size)
+{
+ return calloc (number, size);
+}
PTR
mmalloc (md, size)
PTR md;
- long size;
+ size_t size;
{
- return (malloc (size));
+ return malloc (size);
}
PTR
mrealloc (md, ptr, size)
PTR md;
PTR ptr;
- long size;
+ size_t size;
{
- if (ptr == 0) /* Guard against old realloc's */
+ if (ptr == 0) /* Guard against old realloc's */
return malloc (size);
else
return realloc (ptr, size);
free (ptr);
}
-#endif /* NO_MMALLOC */
+#endif /* USE_MMALLOC */
-#if defined (NO_MMALLOC) || defined (NO_MMALLOC_CHECK)
+#if !defined (USE_MMALLOC) || defined (NO_MMCHECK)
void
-init_malloc (md)
- PTR md;
+init_malloc (void *md)
{
}
-#else /* have mmalloc and want corruption checking */
+#else /* Have mmalloc and want corruption checking */
static void
malloc_botch ()
{
- fatal_dump_core ("Memory corruption");
+ fprintf_unfiltered (gdb_stderr, "Memory corruption\n");
+ abort ();
}
/* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified
by MD, to detect memory corruption. Note that MD may be NULL to specify
the default heap that grows via sbrk.
- Note that for freshly created regions, we must call mmcheck prior to any
+ Note that for freshly created regions, we must call mmcheckf prior to any
mallocs in the region. Otherwise, any region which was allocated prior to
installing the checking hooks, which is later reallocated or freed, will
fail the checks! The mmcheck function only allows initial hooks to be
Returns zero on failure, non-zero on success. */
+#ifndef MMCHECK_FORCE
+#define MMCHECK_FORCE 0
+#endif
+
void
-init_malloc (md)
- PTR md;
+init_malloc (void *md)
{
- if (!mmcheck (md, malloc_botch))
+ if (!mmcheckf (md, malloc_botch, MMCHECK_FORCE))
{
- warning ("internal error: failed to install memory consistency checks");
+ /* Don't use warning(), which relies on current_target being set
+ to something other than dummy_target, until after
+ initialize_all_files(). */
+
+ fprintf_unfiltered
+ (gdb_stderr, "warning: failed to install memory consistency checks; ");
+ fprintf_unfiltered
+ (gdb_stderr, "configuration should define NO_MMCHECK or MMCHECK_FORCE\n");
}
mmtrace ();
{
if (size > 0)
{
- fatal ("virtual memory exhausted: can't allocate %ld bytes.", size);
+ internal_error ("virtual memory exhausted: can't allocate %ld bytes.", size);
}
else
{
- fatal ("virtual memory exhausted.");
+ internal_error ("virtual memory exhausted.");
}
}
PTR
xmalloc (size)
- long size;
+ size_t size;
+{
+ return (xmmalloc ((PTR) NULL, size));
+}
+
+/* Like calloc but get error if no storage available */
+
+PTR
+xcalloc (size_t number, size_t size)
{
- return (xmmalloc ((void *) NULL, size));
+ void *mem = mcalloc (NULL, number, size);
+ if (mem == NULL)
+ nomem (number * size);
+ return mem;
}
/* Like mrealloc but get error if no storage available. */
PTR
xrealloc (ptr, size)
PTR ptr;
- long size;
+ size_t size;
{
- return (xmrealloc ((void *) NULL, ptr, size));
+ return (xmrealloc ((PTR) NULL, ptr, size));
}
-
\f
+
/* My replacement for the read system call.
Used like `read' but keeps going if `read' returns too soon. */
}
char *
-msavestring (md, ptr, size)
- void *md;
- const char *ptr;
- int size;
+msavestring (void *md, const char *ptr, int size)
{
register char *p = (char *) xmmalloc (md, size + 1);
memcpy (p, ptr, size);
}
char *
-mstrsave (md, ptr)
- void *md;
- const char *ptr;
+mstrsave (void *md, const char *ptr)
{
return (msavestring (md, ptr, strlen (ptr)));
}
void
print_spaces (n, file)
register int n;
- register FILE *file;
+ register struct ui_file *file;
+{
+ fputs_unfiltered (n_spaces (n), file);
+}
+
+/* Print a host address. */
+
+void
+gdb_print_host_address (void *addr, struct ui_file *stream)
{
- while (n-- > 0)
- fputc (' ', file);
+
+ /* 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.
/* VARARGS */
int
-query (va_alist)
- va_dcl
+query (char *ctlstr,...)
{
va_list args;
- char *ctlstr;
register int answer;
register int ans2;
+ int retval;
+
+ va_start (args, ctlstr);
+
+ if (query_hook)
+ {
+ return query_hook (ctlstr, args);
+ }
/* Automatically answer "yes" if input is not from a terminal. */
if (!input_from_terminal_p ())
return 1;
+#ifdef MPW
+ /* FIXME Automatically answer "yes" if called from MacGDB. */
+ if (mac_app)
+ return 1;
+#endif /* MPW */
while (1)
{
wrap_here (""); /* Flush any buffered output */
- fflush (stdout);
- va_start (args);
- ctlstr = va_arg (args, char *);
- vfprintf_filtered (stdout, ctlstr, args);
- va_end (args);
+ gdb_flush (gdb_stdout);
+
+ if (annotation_level > 1)
+ printf_filtered ("\n\032\032pre-query\n");
+
+ vfprintf_filtered (gdb_stdout, ctlstr, args);
printf_filtered ("(y or n) ");
- fflush (stdout);
- answer = fgetc (stdin);
+
+ if (annotation_level > 1)
+ printf_filtered ("\n\032\032query\n");
+
+#ifdef MPW
+ /* If not in MacGDB, move to a new line so the entered line doesn't
+ have a prompt on the front of it. */
+ if (!mac_app)
+ fputs_unfiltered ("\n", gdb_stdout);
+#endif /* MPW */
+
+ wrap_here ("");
+ gdb_flush (gdb_stdout);
+
+#if defined(TUI)
+ if (!tui_version || cmdWin == tuiWinWithFocus ())
+#endif
+ answer = fgetc (stdin);
+#if defined(TUI)
+ else
+ answer = (unsigned char) tuiBufferGetc ();
+
+#endif
clearerr (stdin); /* in case of C-d */
if (answer == EOF) /* C-d */
- return 1;
- if (answer != '\n') /* Eat rest of input line, to EOF or newline */
- do
+ {
+ retval = 1;
+ break;
+ }
+ /* Eat rest of input line, to EOF or newline */
+ if ((answer != '\n') || (tui_version && answer != '\r'))
+ do
{
- ans2 = fgetc (stdin);
+#if defined(TUI)
+ if (!tui_version || cmdWin == tuiWinWithFocus ())
+#endif
+ ans2 = fgetc (stdin);
+#if defined(TUI)
+ else
+ ans2 = (unsigned char) tuiBufferGetc ();
+#endif
clearerr (stdin);
}
- while (ans2 != EOF && ans2 != '\n');
+ while (ans2 != EOF && ans2 != '\n' && ans2 != '\r');
+ TUIDO (((TuiOpaqueFuncPtr) tui_vStartNewLines, 1));
+
if (answer >= 'a')
answer -= 040;
if (answer == 'Y')
- return 1;
+ {
+ retval = 1;
+ break;
+ }
if (answer == 'N')
- return 0;
+ {
+ retval = 0;
+ break;
+ }
printf_filtered ("Please answer y or n.\n");
}
-}
+ if (annotation_level > 1)
+ printf_filtered ("\n\032\032post-query\n");
+ return retval;
+}
\f
+
/* 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
if (c == '?')
return 0177;
return (c & 0200) | (c & 037);
-
+
case '0':
case '1':
case '2':
be call for printing things which are independent of the language
of the program being debugged. */
-void
-gdb_printchar (c, stream, quoter)
- register int c;
- FILE *stream;
+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);
+
+static void
+printchar (c, do_fputs, do_fprintf, stream, quoter)
+ 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':
- fputs_filtered ("\\n", stream);
- break;
- case '\b':
- fputs_filtered ("\\b", stream);
- break;
- case '\t':
- fputs_filtered ("\\t", stream);
- break;
- case '\f':
- fputs_filtered ("\\f", stream);
- break;
- case '\r':
- fputs_filtered ("\\r", stream);
- break;
- case '\033':
- fputs_filtered ("\\e", stream);
- break;
- case '\007':
- fputs_filtered ("\\a", stream);
- break;
- default:
- fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
- break;
- }
- } else {
- if (c == '\\' || c == quoter)
- fputs_filtered ("\\", stream);
- fprintf_filtered (stream, "%c", c);
- }
+ 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 (str, quoter, stream)
+ const char *str;
+ int quoter;
+ struct ui_file *stream;
+{
+ while (*str)
+ printchar (*str++, fputs_filtered, fprintf_filtered, stream, quoter);
+}
+
+void
+fputstr_unfiltered (str, quoter, stream)
+ const char *str;
+ int quoter;
+ struct ui_file *stream;
+{
+ while (*str)
+ printchar (*str++, fputs_unfiltered, fprintf_unfiltered, stream, quoter);
+}
+
+void
+fputstrn_unfiltered (str, n, quoter, stream)
+ 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);
}
+
\f
+
/* Number of lines per page or UINT_MAX if paging is disabled. */
static unsigned int lines_per_page;
-/* Number of chars per line or UNIT_MAX is line folding is disabled. */
+/* Number of chars per line or UNIT_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;
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.
+ 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;
- wrap_column is the column number on the screen where wrap_buffer begins.
- When wrap_column is zero, wrapping is not in effect.
- wrap_buffer is malloc'd with chars_per_line+2 bytes.
- When wrap_buffer[0] is null, the buffer is empty.
- wrap_pointer points into it at the next character to fill.
- wrap_indent is the string that should be used as indentation if the
- wrap occurs. */
+/* String to indent by if the wrap occurs. Must not be NULL if wrap_column
+ is non-zero. */
+static char *wrap_indent;
-static char *wrap_buffer, *wrap_pointer, *wrap_indent;
+/* Column number on the screen where wrap_buffer begins, or 0 if wrapping
+ is not in effect. */
static int wrap_column;
+\f
-/* ARGSUSED */
-static void
-set_width_command (args, from_tty, c)
- char *args;
- int from_tty;
- struct cmd_list_element *c;
+/* Inialize the lines and chars per page */
+void
+init_page_info ()
+{
+#if defined(TUI)
+ if (tui_version && m_winPtrNotNull (cmdWin))
+ {
+ lines_per_page = cmdWin->generic.height;
+ chars_per_line = cmdWin->generic.width;
+ }
+ else
+#endif
+ {
+ /* These defaults will be used if we are unable to get the correct
+ values from termcap. */
+#if defined(__GO32__)
+ lines_per_page = ScreenRows ();
+ chars_per_line = ScreenCols ();
+#else
+ lines_per_page = 24;
+ chars_per_line = 80;
+
+#if !defined (MPW) && !defined (_WIN32)
+ /* No termcap under MPW, although might be cool to do something
+ by looking at worksheet or console window sizes. */
+ /* Initialize the screen height and width from termcap. */
+ {
+ char *termtype = getenv ("TERM");
+
+ /* Positive means success, nonpositive means failure. */
+ int status;
+
+ /* 2048 is large enough for all known terminals, according to the
+ GNU termcap manual. */
+ char term_buffer[2048];
+
+ if (termtype)
+ {
+ status = tgetent (term_buffer, termtype);
+ if (status > 0)
+ {
+ int val;
+ int running_in_emacs = getenv ("EMACS") != NULL;
+
+ val = tgetnum ("li");
+ if (val >= 0 && !running_in_emacs)
+ lines_per_page = val;
+ else
+ /* 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;
+
+ val = tgetnum ("co");
+ if (val >= 0)
+ chars_per_line = val;
+ }
+ }
+ }
+#endif /* MPW */
+
+#if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
+
+ /* If there is a better way to determine the window size, use it. */
+ SIGWINCH_HANDLER (SIGWINCH);
+#endif
+#endif
+ /* If the output is not a terminal, don't paginate it. */
+ if (!ui_file_isatty (gdb_stdout))
+ lines_per_page = UINT_MAX;
+ } /* the command_line_version */
+ set_width ();
+}
+
+static void
+set_width ()
{
+ if (chars_per_line == 0)
+ init_page_info ();
+
if (!wrap_buffer)
{
wrap_buffer = (char *) xmalloc (chars_per_line + 2);
wrap_pointer = wrap_buffer; /* Start it at the beginning */
}
+/* ARGSUSED */
+static void
+set_width_command (args, from_tty, c)
+ char *args;
+ int from_tty;
+ struct cmd_list_element *c;
+{
+ set_width ();
+}
+
/* Wait, so the user can read what's on the screen. Prompt the user
to continue by pressing RETURN. */
prompt_for_continue ()
{
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
reinitialize_more_filter ();
immediate_quit++;
- ignore = gdb_readline ("---Type <return> to continue---");
+ /* 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 = readline (cont_prompt);
+
+ if (annotation_level > 1)
+ printf_unfiltered ("\n\032\032post-prompt-for-continue\n");
+
if (ignore)
- free (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);
+ }
+ free (ignore);
+ }
immediate_quit--;
/* Now we have to do this again, so that GDB will know that it doesn't
/* 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 nonzero, it is a string to be printed to indent the
+ 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().
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. */
+ 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(indent)
- char *indent;
+wrap_here (indent)
+ char *indent;
{
+ /* This should have been allocated, but be paranoid anyway. */
+ if (!wrap_buffer)
+ abort ();
+
if (wrap_buffer[0])
{
*wrap_pointer = '\0';
- fputs (wrap_buffer, stdout);
+ fputs_unfiltered (wrap_buffer, gdb_stdout);
}
wrap_pointer = wrap_buffer;
wrap_buffer[0] = '\0';
- if (chars_per_line == UINT_MAX) /* No line overflow checking */
+ if (chars_per_line == UINT_MAX) /* No line overflow checking */
{
wrap_column = 0;
}
else if (chars_printed >= chars_per_line)
{
puts_filtered ("\n");
- puts_filtered (indent);
+ if (indent != NULL)
+ puts_filtered (indent);
wrap_column = 0;
}
else
{
wrap_column = chars_printed;
- wrap_indent = indent;
+ if (indent == NULL)
+ wrap_indent = "";
+ else
+ wrap_indent = indent;
}
}
}
}
-/* Like fputs but pause after every screenful, and can wrap at points
- other than the final character of a line.
- Unlike fputs, fputs_filtered does not return a value.
+
+/* 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
- (since prompt_for_continue may do so) so this routine should not be
- called when cleanups are not in place. */
+ 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. */
-void
-fputs_filtered (linebuffer, stream)
+static void
+fputs_maybe_filtered (linebuffer, stream, filter)
const char *linebuffer;
- FILE *stream;
+ struct ui_file *stream;
+ int filter;
{
const char *lineptr;
if (linebuffer == 0)
return;
-
+
/* Don't do any filtering if it is disabled. */
- if (stream != stdout
- || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX))
+ if ((stream != gdb_stdout) || !pagination_enabled
+ || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX))
{
- fputs (linebuffer, stream);
+ 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 (lines_printed >= lines_per_page - 1)
+ if (filter &&
+ (lines_printed >= lines_per_page - 1))
prompt_for_continue ();
while (*lineptr && *lineptr != '\n')
if (wrap_column)
*wrap_pointer++ = '\t';
else
- putc ('\t', stream);
+ 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. */
+ shifting left 3 advances to the next tab stop. */
chars_printed = ((chars_printed >> 3) + 1) << 3;
lineptr++;
}
if (wrap_column)
*wrap_pointer++ = *lineptr;
else
- putc (*lineptr, stream);
+ 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 chars_per_line is right, we probably just overflowed
+ anyway; if it's wrong, let us keep going. */
if (wrap_column)
- putc ('\n', stream);
+ fputc_unfiltered ('\n', stream);
/* Possible new page. */
if (lines_printed >= lines_per_page - 1)
/* Now output indentation and wrapped string */
if (wrap_column)
{
- if (wrap_indent)
- fputs (wrap_indent, stream);
+ fputs_unfiltered (wrap_indent, stream);
*wrap_pointer = '\0'; /* Null-terminate saved stuff */
- fputs (wrap_buffer, stream); /* and eject it */
+ 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
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);
+ + (save_chars - wrap_column);
wrap_pointer = wrap_buffer; /* Reset buffer */
wrap_buffer[0] = '\0';
- wrap_column = 0; /* And disable fancy wrap */
- }
+ wrap_column = 0; /* And disable fancy wrap */
+ }
}
}
if (*lineptr == '\n')
{
chars_printed = 0;
- wrap_here ((char *)0); /* Spit out chars, cancel further wraps */
+ wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */
lines_printed++;
- putc ('\n', stream);
+ fputc_unfiltered ('\n', stream);
lineptr++;
}
}
}
+void
+fputs_filtered (linebuffer, stream)
+ const char *linebuffer;
+ struct ui_file *stream;
+{
+ fputs_maybe_filtered (linebuffer, stream, 1);
+}
+
+int
+putchar_unfiltered (c)
+ int c;
+{
+ char buf = c;
+ ui_file_write (gdb_stdout, &buf, 1);
+ return c;
+}
+
+int
+fputc_unfiltered (c, stream)
+ int c;
+ struct ui_file *stream;
+{
+ char buf = c;
+ ui_file_write (stream, &buf, 1);
+ return c;
+}
+
+int
+fputc_filtered (c, stream)
+ int c;
+ struct ui_file *stream;
+{
+ char buf[2];
+
+ buf[0] = c;
+ buf[1] = 0;
+ fputs_filtered (buf, stream);
+ return c;
+}
-/* fputs_demangled is a variant of fputs_filtered that
- demangles g++ names.*/
+/* puts_debug is like fputs_unfiltered, except it prints special
+ characters in printable fashion. */
void
-fputs_demangled (linebuffer, stream, arg_mode)
- char *linebuffer;
- FILE *stream;
- int arg_mode;
+puts_debug (prefix, string, suffix)
+ char *prefix;
+ char *string;
+ char *suffix;
{
-#define SYMBOL_MAX 1024
+ int ch;
-#define SYMBOL_CHAR(c) (isascii(c) \
- && (isalnum(c) || (c) == '_' || (c) == CPLUS_MARKER))
+ /* 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 = "";
- char buf[SYMBOL_MAX+1];
-# define DMSLOP 5 /* How much room to leave in buf */
- char *p;
+ if (*string == '\n')
+ return_p = 0;
- if (linebuffer == NULL)
- return;
+ /* 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);
+ }
- /* If user wants to see raw output, no problem. */
- if (!demangle) {
- fputs_filtered (linebuffer, stream);
- return;
- }
-
- p = linebuffer;
-
- while ( *p != (char) 0 ) {
- int i = 0;
-
- /* collect non-interesting characters into buf */
- while (*p != (char) 0 && !SYMBOL_CHAR(*p) && i < (int)sizeof(buf)-DMSLOP ) {
- buf[i++] = *p;
- p++;
- }
- if (i > 0) {
- /* output the non-interesting characters without demangling */
- buf[i] = (char) 0;
- fputs_filtered(buf, stream);
- i = 0; /* reset buf */
- }
-
- /* and now the interesting characters */
- while (i < SYMBOL_MAX
- && *p != (char) 0
- && SYMBOL_CHAR(*p)
- && i < (int)sizeof(buf) - DMSLOP) {
- buf[i++] = *p;
- p++;
- }
- buf[i] = (char) 0;
- if (i > 0) {
- char * result;
-
- if ( (result = cplus_demangle(buf, arg_mode)) != NULL ) {
- fputs_filtered(result, stream);
- free(result);
- }
- else {
- fputs_filtered(buf, stream);
- }
+ /* 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,
- print out a pause message and do a gdb_readline to get the users
- permision to continue.
+ 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 that this routine has a restriction that the length of the
- final output line must be less than 255 characters *or* it must be
- less than twice the size of the format string. This is a very
- arbitrary restriction, but it is an internal restriction, so I'll
- put it in. This means that the %s format specifier is almost
- useless; unless the caller can GUARANTEE that the string is short
- enough, fputs_filtered should be used instead.
-
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. */
-#define MIN_LINEBUF 255
+static void
+vfprintf_maybe_filtered (stream, format, args, filter)
+ struct ui_file *stream;
+ const char *format;
+ va_list args;
+ int filter;
+{
+ char *linebuffer;
+ struct cleanup *old_cleanups;
+
+ vasprintf (&linebuffer, format, args);
+ if (linebuffer == NULL)
+ {
+ fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr);
+ exit (1);
+ }
+ old_cleanups = make_cleanup (free, linebuffer);
+ fputs_maybe_filtered (linebuffer, stream, filter);
+ do_cleanups (old_cleanups);
+}
+
void
vfprintf_filtered (stream, format, args)
- FILE *stream;
- char *format;
+ struct ui_file *stream;
+ const char *format;
va_list args;
{
- char line_buf[MIN_LINEBUF+10];
- char *linebuffer = line_buf;
- int format_length;
+ vfprintf_maybe_filtered (stream, format, args, 1);
+}
- format_length = strlen (format);
+void
+vfprintf_unfiltered (stream, format, args)
+ struct ui_file *stream;
+ const char *format;
+ va_list args;
+{
+ char *linebuffer;
+ struct cleanup *old_cleanups;
- /* Reallocate buffer to a larger size if this is necessary. */
- if (format_length * 2 > MIN_LINEBUF)
+ vasprintf (&linebuffer, format, args);
+ if (linebuffer == NULL)
{
- linebuffer = alloca (10 + format_length * 2);
+ fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr);
+ exit (1);
}
-
- /* This won't blow up if the restrictions described above are
- followed. */
- vsprintf (linebuffer, format, args);
-
- fputs_filtered (linebuffer, stream);
+ old_cleanups = make_cleanup (free, linebuffer);
+ fputs_unfiltered (linebuffer, stream);
+ do_cleanups (old_cleanups);
}
void
vprintf_filtered (format, args)
- char *format;
+ const char *format;
va_list args;
{
- vfprintf_filtered (stdout, format, args);
+ vfprintf_maybe_filtered (gdb_stdout, format, args, 1);
}
-/* VARARGS */
void
-fprintf_filtered (va_alist)
- va_dcl
+vprintf_unfiltered (format, args)
+ const char *format;
+ va_list args;
{
- va_list args;
- FILE *stream;
- char *format;
-
- va_start (args);
- stream = va_arg (args, FILE *);
- format = va_arg (args, char *);
+ vfprintf_unfiltered (gdb_stdout, format, args);
+}
- /* This won't blow up if the restrictions described above are
- followed. */
+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);
}
-/* Like fprintf_filtered, but prints it's result indent.
- Called as fprintfi_filtered (spaces, format, arg1, arg2, ...); */
+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, ...); */
-/* VARARGS */
void
-fprintfi_filtered (va_alist)
- va_dcl
+fprintfi_filtered (int spaces, struct ui_file * stream, const char *format,...)
{
va_list args;
- int spaces;
- FILE *stream;
- char *format;
-
- va_start (args);
- spaces = va_arg (args, int);
- stream = va_arg (args, FILE *);
- format = va_arg (args, char *);
+ va_start (args, format);
print_spaces_filtered (spaces, stream);
- /* This won't blow up if the restrictions described above are
- followed. */
vfprintf_filtered (stream, format, args);
va_end (args);
}
-/* VARARGS */
+
void
-printf_filtered (va_alist)
- va_dcl
+printf_filtered (const char *format,...)
{
va_list args;
- char *format;
+ va_start (args, format);
+ vfprintf_filtered (gdb_stdout, format, args);
+ va_end (args);
+}
- va_start (args);
- format = va_arg (args, char *);
- vfprintf_filtered (stdout, format, 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, arg1, arg2, ...); */
+ Called as printfi_filtered (spaces, format, ...); */
-/* VARARGS */
void
-printfi_filtered (va_alist)
- va_dcl
+printfi_filtered (int spaces, const char *format,...)
{
va_list args;
- int spaces;
- char *format;
-
- va_start (args);
- spaces = va_arg (args, int);
- format = va_arg (args, char *);
- print_spaces_filtered (spaces, stdout);
- vfprintf_filtered (stdout, format, args);
+ va_start (args, format);
+ print_spaces_filtered (spaces, gdb_stdout);
+ vfprintf_filtered (gdb_stdout, format, args);
va_end (args);
}
void
puts_filtered (string)
- char *string;
+ const char *string;
+{
+ fputs_filtered (string, gdb_stdout);
+}
+
+void
+puts_unfiltered (string)
+ const char *string;
{
- fputs_filtered (string, stdout);
+ fputs_unfiltered (string, gdb_stdout);
}
/* Return a pointer to N spaces and a null. The pointer is good
n_spaces (n)
int n;
{
- register char *t;
- static char *spaces;
- static int max_spaces;
+ char *t;
+ static char *spaces = 0;
+ static int max_spaces = -1;
if (n > max_spaces)
{
if (spaces)
free (spaces);
- spaces = (char *) xmalloc (n+1);
- for (t = spaces+n; t != spaces;)
+ spaces = (char *) xmalloc (n + 1);
+ for (t = spaces + n; t != spaces;)
*--t = ' ';
spaces[n] = '\0';
max_spaces = n;
void
print_spaces_filtered (n, stream)
int n;
- FILE *stream;
+ struct ui_file *stream;
{
fputs_filtered (n_spaces (n), stream);
}
\f
/* C++ demangler stuff. */
-/* Make a copy of a symbol, applying C++ demangling if demangling is enabled
- and a demangled version exists. Note that the value returned from
- cplus_demangle is already allocated in malloc'd memory. */
-
-char *
-strdup_demangled (name)
- const char *name;
-{
- char *demangled = NULL;
-
- if (demangle)
- {
- demangled = cplus_demangle (name, DMGL_PARAMS | DMGL_ANSI);
- }
- return ((demangled != NULL) ? demangled : strdup (name));
-}
-
+/* 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. */
-/* Print NAME on STREAM, demangling if necessary. */
void
-fprint_symbol (stream, name)
- FILE *stream;
+fprintf_symbol_filtered (stream, name, lang, arg_mode)
+ struct ui_file *stream;
char *name;
+ enum language lang;
+ int arg_mode;
{
char *demangled;
- if ((!demangle)
- || NULL == (demangled = cplus_demangle (name, DMGL_PARAMS | DMGL_ANSI)))
- fputs_filtered (name, stream);
- else
+
+ if (name != NULL)
{
- fputs_filtered (demangled, stream);
- free (demangled);
+ /* If user wants to see raw output, no problem. */
+ if (!demangle)
+ {
+ fputs_filtered (name, stream);
+ }
+ else
+ {
+ switch (lang)
+ {
+ case language_cplus:
+ demangled = cplus_demangle (name, arg_mode);
+ break;
+ case language_java:
+ demangled = cplus_demangle (name, arg_mode | DMGL_JAVA);
+ break;
+ case language_chill:
+ demangled = chill_demangle (name);
+ break;
+ default:
+ demangled = NULL;
+ break;
+ }
+ fputs_filtered (demangled ? demangled : name, stream);
+ if (demangled != NULL)
+ {
+ free (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++
}
return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0');
}
+\f
+
+/*
+ ** 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 (string_to_compare, template_string)
+ 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 (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ pagination_enabled = 1;
+}
+static void pagination_on_command (char *arg, int from_tty);
+static void
+pagination_off_command (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ pagination_enabled = 0;
+}
\f
+
void
-_initialize_utils ()
+initialize_utils ()
{
struct cmd_list_element *c;
- c = add_set_cmd ("width", class_support, var_uinteger,
- (char *)&chars_per_line,
- "Set number of characters gdb thinks are in a line.",
- &setlist);
+ c = add_set_cmd ("width", class_support, var_uinteger,
+ (char *) &chars_per_line,
+ "Set number of characters gdb thinks are in a line.",
+ &setlist);
add_show_from_set (c, &showlist);
c->function.sfunc = set_width_command;
add_show_from_set
(add_set_cmd ("height", class_support,
- var_uinteger, (char *)&lines_per_page,
+ var_uinteger, (char *) &lines_per_page,
"Set number of lines gdb thinks are in a page.", &setlist),
&showlist);
-
- /* These defaults will be used if we are unable to get the correct
- values from termcap. */
-#if defined(__GO32__)
- lines_per_page = ScreenRows();
- chars_per_line = ScreenCols();
-#else
- lines_per_page = 24;
- chars_per_line = 80;
- /* Initialize the screen height and width from termcap. */
- {
- char *termtype = getenv ("TERM");
-
- /* Positive means success, nonpositive means failure. */
- int status;
-
- /* 2048 is large enough for all known terminals, according to the
- GNU termcap manual. */
- char term_buffer[2048];
-
- if (termtype)
- {
- status = tgetent (term_buffer, termtype);
- if (status > 0)
- {
- int val;
-
- val = tgetnum ("li");
- if (val >= 0)
- lines_per_page = val;
- else
- /* 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;
-
- val = tgetnum ("co");
- if (val >= 0)
- chars_per_line = val;
- }
- }
- }
-#if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
+ init_page_info ();
- /* If there is a better way to determine the window size, use it. */
- SIGWINCH_HANDLER ();
-#endif
-#endif
/* If the output is not a terminal, don't paginate it. */
- if (!ISATTY (stdout))
+ if (!ui_file_isatty (gdb_stdout))
lines_per_page = UINT_MAX;
- set_width_command ((char *)NULL, 0, c);
+ set_width_command ((char *) NULL, 0, c);
add_show_from_set
- (add_set_cmd ("demangle", class_support, var_boolean,
- (char *)&demangle,
- "Set demangling of encoded C++ names when displaying symbols.",
+ (add_set_cmd ("demangle", class_support, var_boolean,
+ (char *) &demangle,
+ "Set demangling of encoded C++ names when displaying symbols.",
&setprintlist),
&showprintlist);
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.",
+ (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++ names in disassembly listings.",
+ (add_set_cmd ("asm-demangle", class_support, var_boolean,
+ (char *) &asm_demangle,
+ "Set demangling of C++ names in disassembly listings.",
&setprintlist),
&showprintlist);
}
/* Machine specific function to handle SIGWINCH signal. */
#ifdef SIGWINCH_HANDLER_BODY
- SIGWINCH_HANDLER_BODY
+SIGWINCH_HANDLER_BODY
+#endif
+\f
+/* Support for converting target fp numbers into host DOUBLEST format. */
+
+/* XXX - This code should really be in libiberty/floatformat.c, however
+ configuration issues with libiberty made this very difficult to do in the
+ available time. */
+
+#include "floatformat.h"
+#include <math.h> /* ldexp */
+
+/* The odds that CHAR_BIT will be anything but 8 are low enough that I'm not
+ going to bother with trying to muck around with whether it is defined in
+ a system header, what we do if not, etc. */
+#define FLOATFORMAT_CHAR_BIT 8
+
+static unsigned long get_field (unsigned char *,
+ enum floatformat_byteorders,
+ unsigned int, unsigned int, unsigned int);
+
+/* Extract a field which starts at START and is LEN bytes long. DATA and
+ TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
+static unsigned long
+get_field (data, order, total_len, start, len)
+ unsigned char *data;
+ enum floatformat_byteorders order;
+ unsigned int total_len;
+ unsigned int start;
+ unsigned int len;
+{
+ unsigned long result;
+ unsigned int cur_byte;
+ int cur_bitshift;
+
+ /* Start at the least significant part of the field. */
+ if (order == floatformat_little || order == floatformat_littlebyte_bigword)
+ {
+ /* We start counting from the other end (i.e, from the high bytes
+ rather than the low bytes). As such, we need to be concerned
+ with what happens if bit 0 doesn't start on a byte boundary.
+ I.e, we need to properly handle the case where total_len is
+ not evenly divisible by 8. So we compute ``excess'' which
+ represents the number of bits from the end of our starting
+ byte needed to get to bit 0. */
+ int excess = FLOATFORMAT_CHAR_BIT - (total_len % FLOATFORMAT_CHAR_BIT);
+ cur_byte = (total_len / FLOATFORMAT_CHAR_BIT)
+ - ((start + len + excess) / FLOATFORMAT_CHAR_BIT);
+ cur_bitshift = ((start + len + excess) % FLOATFORMAT_CHAR_BIT)
+ - FLOATFORMAT_CHAR_BIT;
+ }
+ else
+ {
+ cur_byte = (start + len) / FLOATFORMAT_CHAR_BIT;
+ cur_bitshift =
+ ((start + len) % FLOATFORMAT_CHAR_BIT) - FLOATFORMAT_CHAR_BIT;
+ }
+ if (cur_bitshift > -FLOATFORMAT_CHAR_BIT)
+ result = *(data + cur_byte) >> (-cur_bitshift);
+ else
+ result = 0;
+ cur_bitshift += FLOATFORMAT_CHAR_BIT;
+ if (order == floatformat_little || order == floatformat_littlebyte_bigword)
+ ++cur_byte;
+ else
+ --cur_byte;
+
+ /* Move towards the most significant part of the field. */
+ while (cur_bitshift < len)
+ {
+ result |= (unsigned long)*(data + cur_byte) << cur_bitshift;
+ cur_bitshift += FLOATFORMAT_CHAR_BIT;
+ if (order == floatformat_little || order == floatformat_littlebyte_bigword)
+ ++cur_byte;
+ else
+ --cur_byte;
+ }
+ if (len < sizeof(result) * FLOATFORMAT_CHAR_BIT)
+ /* Mask out bits which are not part of the field */
+ result &= ((1UL << len) - 1);
+ return result;
+}
+
+/* Convert from FMT to a DOUBLEST.
+ FROM is the address of the extended float.
+ Store the DOUBLEST in *TO. */
+
+void
+floatformat_to_doublest (fmt, from, to)
+ const struct floatformat *fmt;
+ char *from;
+ DOUBLEST *to;
+{
+ unsigned char *ufrom = (unsigned char *) from;
+ DOUBLEST dto;
+ long exponent;
+ unsigned long mant;
+ unsigned int mant_bits, mant_off;
+ int mant_bits_left;
+ int special_exponent; /* It's a NaN, denorm or zero */
+
+ /* If the mantissa bits are not contiguous from one end of the
+ mantissa to the other, we need to make a private copy of the
+ source bytes that is in the right order since the unpacking
+ algorithm assumes that the bits are contiguous.
+
+ Swap the bytes individually rather than accessing them through
+ "long *" since we have no guarantee that they start on a long
+ alignment, and also sizeof(long) for the host could be different
+ than sizeof(long) for the target. FIXME: Assumes sizeof(long)
+ for the target is 4. */
+
+ if (fmt->byteorder == floatformat_littlebyte_bigword)
+ {
+ static unsigned char *newfrom;
+ unsigned char *swapin, *swapout;
+ int longswaps;
+
+ longswaps = fmt->totalsize / FLOATFORMAT_CHAR_BIT;
+ longswaps >>= 3;
+
+ if (newfrom == NULL)
+ {
+ newfrom = (unsigned char *) xmalloc (fmt->totalsize);
+ }
+ swapout = newfrom;
+ swapin = ufrom;
+ ufrom = newfrom;
+ while (longswaps-- > 0)
+ {
+ /* This is ugly, but efficient */
+ *swapout++ = swapin[4];
+ *swapout++ = swapin[5];
+ *swapout++ = swapin[6];
+ *swapout++ = swapin[7];
+ *swapout++ = swapin[0];
+ *swapout++ = swapin[1];
+ *swapout++ = swapin[2];
+ *swapout++ = swapin[3];
+ swapin += 8;
+ }
+ }
+
+ exponent = get_field (ufrom, fmt->byteorder, fmt->totalsize,
+ fmt->exp_start, fmt->exp_len);
+ /* Note that if exponent indicates a NaN, we can't really do anything useful
+ (not knowing if the host has NaN's, or how to build one). So it will
+ end up as an infinity or something close; that is OK. */
+
+ mant_bits_left = fmt->man_len;
+ mant_off = fmt->man_start;
+ dto = 0.0;
+
+ special_exponent = exponent == 0 || exponent == fmt->exp_nan;
+
+/* Don't bias NaNs. Use minimum exponent for denorms. For simplicity,
+ we don't check for zero as the exponent doesn't matter. */
+ if (!special_exponent)
+ exponent -= fmt->exp_bias;
+ else if (exponent == 0)
+ exponent = 1 - fmt->exp_bias;
+
+ /* Build the result algebraically. Might go infinite, underflow, etc;
+ who cares. */
+
+/* If this format uses a hidden bit, explicitly add it in now. Otherwise,
+ increment the exponent by one to account for the integer bit. */
+
+ if (!special_exponent)
+ {
+ if (fmt->intbit == floatformat_intbit_no)
+ dto = ldexp (1.0, exponent);
+ else
+ exponent++;
+ }
+
+ while (mant_bits_left > 0)
+ {
+ mant_bits = min (mant_bits_left, 32);
+
+ mant = get_field (ufrom, fmt->byteorder, fmt->totalsize,
+ mant_off, mant_bits);
+
+ dto += ldexp ((double) mant, exponent - mant_bits);
+ exponent -= mant_bits;
+ mant_off += mant_bits;
+ mant_bits_left -= mant_bits;
+ }
+
+ /* Negate it if negative. */
+ if (get_field (ufrom, fmt->byteorder, fmt->totalsize, fmt->sign_start, 1))
+ dto = -dto;
+ *to = dto;
+}
+\f
+static void put_field (unsigned char *, enum floatformat_byteorders,
+ unsigned int,
+ unsigned int, unsigned int, unsigned long);
+
+/* Set a field which starts at START and is LEN bytes long. DATA and
+ TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
+static void
+put_field (data, order, total_len, start, len, stuff_to_put)
+ unsigned char *data;
+ enum floatformat_byteorders order;
+ unsigned int total_len;
+ unsigned int start;
+ unsigned int len;
+ unsigned long stuff_to_put;
+{
+ unsigned int cur_byte;
+ int cur_bitshift;
+
+ /* Start at the least significant part of the field. */
+ if (order == floatformat_little || order == floatformat_littlebyte_bigword)
+ {
+ int excess = FLOATFORMAT_CHAR_BIT - (total_len % FLOATFORMAT_CHAR_BIT);
+ cur_byte = (total_len / FLOATFORMAT_CHAR_BIT)
+ - ((start + len + excess) / FLOATFORMAT_CHAR_BIT);
+ cur_bitshift = ((start + len + excess) % FLOATFORMAT_CHAR_BIT)
+ - FLOATFORMAT_CHAR_BIT;
+ }
+ else
+ {
+ cur_byte = (start + len) / FLOATFORMAT_CHAR_BIT;
+ cur_bitshift =
+ ((start + len) % FLOATFORMAT_CHAR_BIT) - FLOATFORMAT_CHAR_BIT;
+ }
+ if (cur_bitshift > -FLOATFORMAT_CHAR_BIT)
+ {
+ *(data + cur_byte) &=
+ ~(((1 << ((start + len) % FLOATFORMAT_CHAR_BIT)) - 1)
+ << (-cur_bitshift));
+ *(data + cur_byte) |=
+ (stuff_to_put & ((1 << FLOATFORMAT_CHAR_BIT) - 1)) << (-cur_bitshift);
+ }
+ cur_bitshift += FLOATFORMAT_CHAR_BIT;
+ if (order == floatformat_little || order == floatformat_littlebyte_bigword)
+ ++cur_byte;
+ else
+ --cur_byte;
+
+ /* Move towards the most significant part of the field. */
+ while (cur_bitshift < len)
+ {
+ if (len - cur_bitshift < FLOATFORMAT_CHAR_BIT)
+ {
+ /* This is the last byte. */
+ *(data + cur_byte) &=
+ ~((1 << (len - cur_bitshift)) - 1);
+ *(data + cur_byte) |= (stuff_to_put >> cur_bitshift);
+ }
+ else
+ *(data + cur_byte) = ((stuff_to_put >> cur_bitshift)
+ & ((1 << FLOATFORMAT_CHAR_BIT) - 1));
+ cur_bitshift += FLOATFORMAT_CHAR_BIT;
+ if (order == floatformat_little || order == floatformat_littlebyte_bigword)
+ ++cur_byte;
+ else
+ --cur_byte;
+ }
+}
+
+#ifdef HAVE_LONG_DOUBLE
+/* Return the fractional part of VALUE, and put the exponent of VALUE in *EPTR.
+ The range of the returned value is >= 0.5 and < 1.0. This is equivalent to
+ frexp, but operates on the long double data type. */
+
+static long double ldfrexp (long double value, int *eptr);
+
+static long double
+ldfrexp (value, eptr)
+ long double value;
+ int *eptr;
+{
+ long double tmp;
+ int exp;
+
+ /* Unfortunately, there are no portable functions for extracting the exponent
+ of a long double, so we have to do it iteratively by multiplying or dividing
+ by two until the fraction is between 0.5 and 1.0. */
+
+ if (value < 0.0l)
+ value = -value;
+
+ tmp = 1.0l;
+ exp = 0;
+
+ if (value >= tmp) /* Value >= 1.0 */
+ while (value >= tmp)
+ {
+ tmp *= 2.0l;
+ exp++;
+ }
+ else if (value != 0.0l) /* Value < 1.0 and > 0.0 */
+ {
+ while (value < tmp)
+ {
+ tmp /= 2.0l;
+ exp--;
+ }
+ tmp *= 2.0l;
+ exp++;
+ }
+
+ *eptr = exp;
+ return value / tmp;
+}
+#endif /* HAVE_LONG_DOUBLE */
+
+
+/* The converse: convert the DOUBLEST *FROM to an extended float
+ and store where TO points. Neither FROM nor TO have any alignment
+ restrictions. */
+
+void
+floatformat_from_doublest (fmt, from, to)
+ CONST struct floatformat *fmt;
+ DOUBLEST *from;
+ char *to;
+{
+ DOUBLEST dfrom;
+ int exponent;
+ DOUBLEST mant;
+ unsigned int mant_bits, mant_off;
+ int mant_bits_left;
+ unsigned char *uto = (unsigned char *) to;
+
+ memcpy (&dfrom, from, sizeof (dfrom));
+ memset (uto, 0, (fmt->totalsize + FLOATFORMAT_CHAR_BIT - 1)
+ / FLOATFORMAT_CHAR_BIT);
+ if (dfrom == 0)
+ return; /* Result is zero */
+ if (dfrom != dfrom) /* Result is NaN */
+ {
+ /* From is NaN */
+ put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start,
+ fmt->exp_len, fmt->exp_nan);
+ /* Be sure it's not infinity, but NaN value is irrel */
+ put_field (uto, fmt->byteorder, fmt->totalsize, fmt->man_start,
+ 32, 1);
+ return;
+ }
+
+ /* If negative, set the sign bit. */
+ if (dfrom < 0)
+ {
+ put_field (uto, fmt->byteorder, fmt->totalsize, fmt->sign_start, 1, 1);
+ dfrom = -dfrom;
+ }
+
+ if (dfrom + dfrom == dfrom && dfrom != 0.0) /* Result is Infinity */
+ {
+ /* Infinity exponent is same as NaN's. */
+ put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start,
+ fmt->exp_len, fmt->exp_nan);
+ /* Infinity mantissa is all zeroes. */
+ put_field (uto, fmt->byteorder, fmt->totalsize, fmt->man_start,
+ fmt->man_len, 0);
+ return;
+ }
+
+#ifdef HAVE_LONG_DOUBLE
+ mant = ldfrexp (dfrom, &exponent);
+#else
+ mant = frexp (dfrom, &exponent);
#endif
+
+ put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start, fmt->exp_len,
+ exponent + fmt->exp_bias - 1);
+
+ mant_bits_left = fmt->man_len;
+ mant_off = fmt->man_start;
+ while (mant_bits_left > 0)
+ {
+ unsigned long mant_long;
+ mant_bits = mant_bits_left < 32 ? mant_bits_left : 32;
+
+ mant *= 4294967296.0;
+ mant_long = ((unsigned long) mant) & 0xffffffffL;
+ mant -= mant_long;
+
+ /* If the integer bit is implicit, then we need to discard it.
+ If we are discarding a zero, we should be (but are not) creating
+ a denormalized number which means adjusting the exponent
+ (I think). */
+ if (mant_bits_left == fmt->man_len
+ && fmt->intbit == floatformat_intbit_no)
+ {
+ mant_long <<= 1;
+ mant_long &= 0xffffffffL;
+ mant_bits -= 1;
+ }
+
+ if (mant_bits < 32)
+ {
+ /* The bits we want are in the most significant MANT_BITS bits of
+ mant_long. Move them to the least significant. */
+ mant_long >>= 32 - mant_bits;
+ }
+
+ put_field (uto, fmt->byteorder, fmt->totalsize,
+ mant_off, mant_bits, mant_long);
+ mant_off += mant_bits;
+ mant_bits_left -= mant_bits;
+ }
+ if (fmt->byteorder == floatformat_littlebyte_bigword)
+ {
+ int count;
+ unsigned char *swaplow = uto;
+ unsigned char *swaphigh = uto + 4;
+ unsigned char tmp;
+
+ for (count = 0; count < 4; count++)
+ {
+ tmp = *swaplow;
+ *swaplow++ = *swaphigh;
+ *swaphigh++ = tmp;
+ }
+ }
+}
+
+/* print routines to handle variable size regs, etc. */
+
+/* temporary storage using circular buffer */
+#define NUMCELLS 16
+#define CELLSIZE 32
+static char *
+get_cell ()
+{
+ static char buf[NUMCELLS][CELLSIZE];
+ static int cell = 0;
+ if (++cell >= NUMCELLS)
+ cell = 0;
+ return buf[cell];
+}
+
+int
+strlen_paddr (void)
+{
+ return (TARGET_PTR_BIT / 8 * 2);
+}
+
+char *
+paddr (CORE_ADDR addr)
+{
+ return phex (addr, TARGET_PTR_BIT / 8);
+}
+
+char *
+paddr_nz (CORE_ADDR addr)
+{
+ return phex_nz (addr, TARGET_PTR_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:
+ abort ();
+ }
+}
+
+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 = get_cell ();
+ switch (sizeof_l)
+ {
+ case 8:
+ sprintf (str, "%08lx%08lx",
+ (unsigned long) (l >> thirty_two),
+ (unsigned long) (l & 0xffffffff));
+ break;
+ case 4:
+ sprintf (str, "%08lx", (unsigned long) l);
+ break;
+ case 2:
+ sprintf (str, "%04x", (unsigned short) (l & 0xffff));
+ break;
+ default:
+ phex (l, sizeof (l));
+ break;
+ }
+ return str;
+}
+
+char *
+phex_nz (ULONGEST l, int sizeof_l)
+{
+ char *str = get_cell ();
+ switch (sizeof_l)
+ {
+ case 8:
+ {
+ unsigned long high = (unsigned long) (l >> thirty_two);
+ if (high == 0)
+ sprintf (str, "%lx", (unsigned long) (l & 0xffffffff));
+ else
+ sprintf (str, "%lx%08lx",
+ high, (unsigned long) (l & 0xffffffff));
+ break;
+ }
+ case 4:
+ sprintf (str, "%lx", (unsigned long) l);
+ break;
+ case 2:
+ sprintf (str, "%x", (unsigned short) (l & 0xffff));
+ break;
+ default:
+ phex_nz (l, sizeof (l));
+ break;
+ }
+ return str;
+}
projects / thirdparty / binutils-gdb.git / blobdiff