2872 lines
73 KiB
C
2872 lines
73 KiB
C
/* General utility routines for GDB, the GNU debugger.
|
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Copyright 1986, 1989, 1990-1992, 1995, 1996, 1998, 2000
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Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
|
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the Free Software Foundation; either version 2 of the License, or
|
||
(at your option) any later version.
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||
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||
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.
|
||
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||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include <ctype.h>
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#include "gdb_string.h"
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#include "event-top.h"
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#ifdef HAVE_CURSES_H
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#include <curses.h>
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#endif
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#ifdef HAVE_TERM_H
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#include <term.h>
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#endif
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#ifdef __GO32__
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#include <pc.h>
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#endif
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/* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
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#ifdef reg
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#undef reg
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#endif
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#include "signals.h"
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#include "gdbcmd.h"
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#include "serial.h"
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#include "bfd.h"
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#include "target.h"
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#include "demangle.h"
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#include "expression.h"
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#include "language.h"
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#include "annotate.h"
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#include "inferior.h" /* for signed_pointer_to_address */
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#include <readline/readline.h>
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#undef XMALLOC
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#define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE)))
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/* readline defines this. */
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#undef savestring
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||
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void (*error_begin_hook) (void);
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||
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||
/* Holds the last error message issued by gdb */
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||
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static struct ui_file *gdb_lasterr;
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/* Prototypes for local functions */
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static void vfprintf_maybe_filtered (struct ui_file *, const char *,
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va_list, int);
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static void fputs_maybe_filtered (const char *, struct ui_file *, int);
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#if defined (USE_MMALLOC) && !defined (NO_MMCHECK)
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static void malloc_botch (void);
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#endif
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static void prompt_for_continue (void);
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static void set_width_command (char *, int, struct cmd_list_element *);
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static void set_width (void);
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/* Chain of cleanup actions established with make_cleanup,
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to be executed if an error happens. */
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static struct cleanup *cleanup_chain; /* cleaned up after a failed command */
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static struct cleanup *final_cleanup_chain; /* cleaned up when gdb exits */
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static struct cleanup *run_cleanup_chain; /* cleaned up on each 'run' */
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static struct cleanup *exec_cleanup_chain; /* cleaned up on each execution command */
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/* cleaned up on each error from within an execution command */
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static struct cleanup *exec_error_cleanup_chain;
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/* Pointer to what is left to do for an execution command after the
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target stops. Used only in asynchronous mode, by targets that
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support async execution. The finish and until commands use it. So
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does the target extended-remote command. */
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struct continuation *cmd_continuation;
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struct continuation *intermediate_continuation;
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/* Nonzero if we have job control. */
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int job_control;
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/* Nonzero means a quit has been requested. */
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int quit_flag;
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/* Nonzero means quit immediately if Control-C is typed now, rather
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than waiting until QUIT is executed. Be careful in setting this;
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code which executes with immediate_quit set has to be very careful
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about being able to deal with being interrupted at any time. It is
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almost always better to use QUIT; the only exception I can think of
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is being able to quit out of a system call (using EINTR loses if
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the SIGINT happens between the previous QUIT and the system call).
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To immediately quit in the case in which a SIGINT happens between
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the previous QUIT and setting immediate_quit (desirable anytime we
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expect to block), call QUIT after setting immediate_quit. */
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int immediate_quit;
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/* Nonzero means that encoded C++ names should be printed out in their
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C++ form rather than raw. */
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int demangle = 1;
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/* Nonzero means that encoded C++ names should be printed out in their
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C++ form even in assembler language displays. If this is set, but
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DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
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int asm_demangle = 0;
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/* Nonzero means that strings with character values >0x7F should be printed
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as octal escapes. Zero means just print the value (e.g. it's an
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international character, and the terminal or window can cope.) */
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int sevenbit_strings = 0;
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||
/* String to be printed before error messages, if any. */
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char *error_pre_print;
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||
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||
/* String to be printed before quit messages, if any. */
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||
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char *quit_pre_print;
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/* String to be printed before warning messages, if any. */
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||
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char *warning_pre_print = "\nwarning: ";
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int pagination_enabled = 1;
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/* Add a new cleanup to the cleanup_chain,
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and return the previous chain pointer
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to be passed later to do_cleanups or discard_cleanups.
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Args are FUNCTION to clean up with, and ARG to pass to it. */
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struct cleanup *
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make_cleanup (make_cleanup_ftype *function, void *arg)
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{
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return make_my_cleanup (&cleanup_chain, function, arg);
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}
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struct cleanup *
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make_final_cleanup (make_cleanup_ftype *function, void *arg)
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{
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return make_my_cleanup (&final_cleanup_chain, function, arg);
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}
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struct cleanup *
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make_run_cleanup (make_cleanup_ftype *function, void *arg)
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{
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return make_my_cleanup (&run_cleanup_chain, function, arg);
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}
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struct cleanup *
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make_exec_cleanup (make_cleanup_ftype *function, void *arg)
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{
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return make_my_cleanup (&exec_cleanup_chain, function, arg);
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}
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struct cleanup *
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make_exec_error_cleanup (make_cleanup_ftype *function, void *arg)
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{
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return make_my_cleanup (&exec_error_cleanup_chain, function, arg);
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}
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static void
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do_freeargv (void *arg)
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{
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freeargv ((char **) arg);
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}
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struct cleanup *
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make_cleanup_freeargv (char **arg)
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{
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return make_my_cleanup (&cleanup_chain, do_freeargv, arg);
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}
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static void
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do_bfd_close_cleanup (void *arg)
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{
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bfd_close (arg);
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}
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struct cleanup *
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make_cleanup_bfd_close (bfd *abfd)
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{
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return make_cleanup (do_bfd_close_cleanup, abfd);
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}
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static void
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do_close_cleanup (void *arg)
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{
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close ((int) arg);
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}
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struct cleanup *
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make_cleanup_close (int fd)
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{
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/* int into void*. Outch!! */
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return make_cleanup (do_close_cleanup, (void *) fd);
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}
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static void
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do_ui_file_delete (void *arg)
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{
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ui_file_delete (arg);
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}
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struct cleanup *
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make_cleanup_ui_file_delete (struct ui_file *arg)
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{
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return make_my_cleanup (&cleanup_chain, do_ui_file_delete, arg);
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}
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struct cleanup *
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make_my_cleanup (struct cleanup **pmy_chain, make_cleanup_ftype *function,
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void *arg)
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{
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register struct cleanup *new
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= (struct cleanup *) xmalloc (sizeof (struct cleanup));
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register struct cleanup *old_chain = *pmy_chain;
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new->next = *pmy_chain;
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new->function = function;
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new->arg = arg;
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*pmy_chain = new;
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return old_chain;
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}
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/* Discard cleanups and do the actions they describe
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until we get back to the point OLD_CHAIN in the cleanup_chain. */
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void
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do_cleanups (register struct cleanup *old_chain)
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{
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do_my_cleanups (&cleanup_chain, old_chain);
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}
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void
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do_final_cleanups (register struct cleanup *old_chain)
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{
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do_my_cleanups (&final_cleanup_chain, old_chain);
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}
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void
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do_run_cleanups (register struct cleanup *old_chain)
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{
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do_my_cleanups (&run_cleanup_chain, old_chain);
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}
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void
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do_exec_cleanups (register struct cleanup *old_chain)
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{
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do_my_cleanups (&exec_cleanup_chain, old_chain);
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}
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void
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do_exec_error_cleanups (register struct cleanup *old_chain)
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{
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do_my_cleanups (&exec_error_cleanup_chain, old_chain);
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}
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void
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do_my_cleanups (register struct cleanup **pmy_chain,
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register struct cleanup *old_chain)
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{
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register struct cleanup *ptr;
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while ((ptr = *pmy_chain) != old_chain)
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{
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*pmy_chain = ptr->next; /* Do this first incase recursion */
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(*ptr->function) (ptr->arg);
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free (ptr);
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}
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}
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/* Discard cleanups, not doing the actions they describe,
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until we get back to the point OLD_CHAIN in the cleanup_chain. */
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void
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discard_cleanups (register struct cleanup *old_chain)
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{
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discard_my_cleanups (&cleanup_chain, old_chain);
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}
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void
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discard_final_cleanups (register struct cleanup *old_chain)
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{
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discard_my_cleanups (&final_cleanup_chain, old_chain);
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}
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void
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discard_exec_error_cleanups (register struct cleanup *old_chain)
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{
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discard_my_cleanups (&exec_error_cleanup_chain, old_chain);
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}
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void
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discard_my_cleanups (register struct cleanup **pmy_chain,
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register struct cleanup *old_chain)
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{
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register struct cleanup *ptr;
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while ((ptr = *pmy_chain) != old_chain)
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{
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*pmy_chain = ptr->next;
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free (ptr);
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}
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}
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/* Set the cleanup_chain to 0, and return the old cleanup chain. */
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struct cleanup *
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save_cleanups (void)
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{
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return save_my_cleanups (&cleanup_chain);
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}
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struct cleanup *
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save_final_cleanups (void)
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{
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return save_my_cleanups (&final_cleanup_chain);
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}
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struct cleanup *
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save_my_cleanups (struct cleanup **pmy_chain)
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{
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struct cleanup *old_chain = *pmy_chain;
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*pmy_chain = 0;
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return old_chain;
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}
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/* Restore the cleanup chain from a previously saved chain. */
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void
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restore_cleanups (struct cleanup *chain)
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{
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restore_my_cleanups (&cleanup_chain, chain);
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}
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void
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restore_final_cleanups (struct cleanup *chain)
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{
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restore_my_cleanups (&final_cleanup_chain, chain);
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}
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void
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restore_my_cleanups (struct cleanup **pmy_chain, struct cleanup *chain)
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{
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*pmy_chain = chain;
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}
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/* This function is useful for cleanups.
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Do
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foo = xmalloc (...);
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old_chain = make_cleanup (free_current_contents, &foo);
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||
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to arrange to free the object thus allocated. */
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void
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free_current_contents (void *ptr)
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{
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||
void **location = ptr;
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if (location == NULL)
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internal_error ("free_current_contents: NULL pointer");
|
||
if (*location != NULL)
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||
{
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free (*location);
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*location = NULL;
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}
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}
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/* Provide a known function that does nothing, to use as a base for
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for a possibly long chain of cleanups. This is useful where we
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use the cleanup chain for handling normal cleanups as well as dealing
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with cleanups that need to be done as a result of a call to error().
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||
In such cases, we may not be certain where the first cleanup is, unless
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||
we have a do-nothing one to always use as the base. */
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/* ARGSUSED */
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void
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||
null_cleanup (void *arg)
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{
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||
}
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/* Add a continuation to the continuation list, the gloabl list
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||
cmd_continuation. The new continuation will be added at the front.*/
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||
void
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add_continuation (continuation_hook, arg_list)
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void (*continuation_hook) (struct continuation_arg *);
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||
struct continuation_arg *arg_list;
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{
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||
struct continuation *continuation_ptr;
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continuation_ptr = (struct continuation *) xmalloc (sizeof (struct continuation));
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continuation_ptr->continuation_hook = continuation_hook;
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continuation_ptr->arg_list = arg_list;
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||
continuation_ptr->next = cmd_continuation;
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cmd_continuation = continuation_ptr;
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||
}
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||
|
||
/* 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
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||
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;
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||
cmd_continuation = NULL;
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||
|
||
/* 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 (void)
|
||
{
|
||
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 (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;
|
||
free (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;
|
||
free (continuation_ptr);
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/* 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_begin (void)
|
||
{
|
||
target_terminal_ours ();
|
||
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. */
|
||
|
||
void
|
||
warning (const char *string,...)
|
||
{
|
||
va_list args;
|
||
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 (void)
|
||
{
|
||
if (error_begin_hook)
|
||
error_begin_hook ();
|
||
|
||
target_terminal_ours ();
|
||
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. */
|
||
|
||
NORETURN void
|
||
verror (const char *string, va_list args)
|
||
{
|
||
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);
|
||
}
|
||
|
||
NORETURN void
|
||
error (const char *string,...)
|
||
{
|
||
va_list args;
|
||
va_start (args, string);
|
||
verror (string, args);
|
||
va_end (args);
|
||
}
|
||
|
||
NORETURN void
|
||
error_stream (struct ui_file *stream)
|
||
{
|
||
long size;
|
||
char *msg = ui_file_xstrdup (stream, &size);
|
||
make_cleanup (free, msg);
|
||
error ("%s", msg);
|
||
}
|
||
|
||
/* 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. Ask the user if they
|
||
want to continue, dump core, or just exit. */
|
||
|
||
NORETURN void
|
||
internal_verror (const char *fmt, va_list ap)
|
||
{
|
||
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);
|
||
|
||
internal_verror (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];
|
||
|
||
if ((msg = strerror (errnum)) == 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 (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 (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)
|
||
{
|
||
serial_t 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)
|
||
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
|
||
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);
|
||
}
|
||
|
||
|
||
#if defined(_MSC_VER) /* should test for wingdb instead? */
|
||
|
||
/*
|
||
* Windows translates all keyboard and mouse events
|
||
* into a message which is appended to the message
|
||
* queue for the process.
|
||
*/
|
||
|
||
void
|
||
notice_quit (void)
|
||
{
|
||
int k = win32pollquit ();
|
||
if (k == 1)
|
||
quit_flag = 1;
|
||
else if (k == 2)
|
||
immediate_quit = 1;
|
||
}
|
||
|
||
#else /* !defined(_MSC_VER) */
|
||
|
||
void
|
||
notice_quit (void)
|
||
{
|
||
/* Done by signals */
|
||
}
|
||
|
||
#endif /* !defined(_MSC_VER) */
|
||
|
||
/* 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);
|
||
|
||
#ifdef REQUEST_QUIT
|
||
REQUEST_QUIT;
|
||
#else
|
||
if (immediate_quit)
|
||
quit ();
|
||
#endif
|
||
}
|
||
|
||
/* Memory management stuff (malloc friends). */
|
||
|
||
/* 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 (PTR md, size_t size)
|
||
{
|
||
return malloc (size);
|
||
}
|
||
|
||
PTR
|
||
mrealloc (PTR md, PTR ptr, size_t size)
|
||
{
|
||
if (ptr == 0) /* Guard against old realloc's */
|
||
return malloc (size);
|
||
else
|
||
return realloc (ptr, size);
|
||
}
|
||
|
||
void
|
||
mfree (PTR md, PTR ptr)
|
||
{
|
||
free (ptr);
|
||
}
|
||
|
||
#endif /* USE_MMALLOC */
|
||
|
||
#if !defined (USE_MMALLOC) || defined (NO_MMCHECK)
|
||
|
||
void
|
||
init_malloc (void *md)
|
||
{
|
||
}
|
||
|
||
#else /* Have mmalloc and want corruption checking */
|
||
|
||
static void
|
||
malloc_botch (void)
|
||
{
|
||
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 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
|
||
installed before the first mmalloc. However, anytime after we have called
|
||
mmcheck the first time to install the checking hooks, we can call it again
|
||
to update the function pointer to the memory corruption handler.
|
||
|
||
Returns zero on failure, non-zero on success. */
|
||
|
||
#ifndef MMCHECK_FORCE
|
||
#define MMCHECK_FORCE 0
|
||
#endif
|
||
|
||
void
|
||
init_malloc (void *md)
|
||
{
|
||
if (!mmcheckf (md, malloc_botch, MMCHECK_FORCE))
|
||
{
|
||
/* 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 ();
|
||
}
|
||
|
||
#endif /* Have mmalloc and want corruption checking */
|
||
|
||
/* 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 ("virtual memory exhausted: can't allocate %ld bytes.", size);
|
||
}
|
||
else
|
||
{
|
||
internal_error ("virtual memory exhausted.");
|
||
}
|
||
}
|
||
|
||
/* Like mmalloc but get error if no storage available, and protect against
|
||
the caller wanting to allocate zero bytes. Whether to return NULL for
|
||
a zero byte request, or translate the request into a request for one
|
||
byte of zero'd storage, is a religious issue. */
|
||
|
||
PTR
|
||
xmmalloc (PTR md, long size)
|
||
{
|
||
register PTR val;
|
||
|
||
if (size == 0)
|
||
{
|
||
val = NULL;
|
||
}
|
||
else if ((val = mmalloc (md, size)) == NULL)
|
||
{
|
||
nomem (size);
|
||
}
|
||
return (val);
|
||
}
|
||
|
||
/* Like mrealloc but get error if no storage available. */
|
||
|
||
PTR
|
||
xmrealloc (PTR md, PTR ptr, long size)
|
||
{
|
||
register PTR val;
|
||
|
||
if (ptr != NULL)
|
||
{
|
||
val = mrealloc (md, ptr, size);
|
||
}
|
||
else
|
||
{
|
||
val = mmalloc (md, size);
|
||
}
|
||
if (val == NULL)
|
||
{
|
||
nomem (size);
|
||
}
|
||
return (val);
|
||
}
|
||
|
||
/* Like malloc but get error if no storage available, and protect against
|
||
the caller wanting to allocate zero bytes. */
|
||
|
||
PTR
|
||
xmalloc (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)
|
||
{
|
||
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 ptr, size_t size)
|
||
{
|
||
return (xmrealloc ((PTR) NULL, ptr, size));
|
||
}
|
||
|
||
|
||
/* 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)
|
||
{
|
||
register 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, int size)
|
||
{
|
||
register char *p = (char *) xmalloc (size + 1);
|
||
memcpy (p, ptr, size);
|
||
p[size] = 0;
|
||
return p;
|
||
}
|
||
|
||
char *
|
||
msavestring (void *md, const char *ptr, int size)
|
||
{
|
||
register char *p = (char *) xmmalloc (md, size + 1);
|
||
memcpy (p, ptr, size);
|
||
p[size] = 0;
|
||
return p;
|
||
}
|
||
|
||
/* The "const" is so it compiles under DGUX (which prototypes strsave
|
||
in <string.h>. FIXME: This should be named "xstrsave", shouldn't it?
|
||
Doesn't real strsave return NULL if out of memory? */
|
||
char *
|
||
strsave (const char *ptr)
|
||
{
|
||
return savestring (ptr, strlen (ptr));
|
||
}
|
||
|
||
char *
|
||
mstrsave (void *md, const char *ptr)
|
||
{
|
||
return (msavestring (md, ptr, strlen (ptr)));
|
||
}
|
||
|
||
void
|
||
print_spaces (register int n, 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)
|
||
{
|
||
|
||
/* 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 (char *ctlstr,...)
|
||
{
|
||
va_list args;
|
||
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 */
|
||
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) ");
|
||
|
||
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 */
|
||
{
|
||
retval = 1;
|
||
break;
|
||
}
|
||
/* Eat rest of input line, to EOF or newline */
|
||
if ((answer != '\n') || (tui_version && answer != '\r'))
|
||
do
|
||
{
|
||
#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' && ans2 != '\r');
|
||
TUIDO (((TuiOpaqueFuncPtr) tui_vStartNewLines, 1));
|
||
|
||
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;
|
||
}
|
||
|
||
|
||
/* 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)
|
||
{
|
||
register int c = *(*string_ptr)++;
|
||
switch (c)
|
||
{
|
||
case 'a':
|
||
return 007; /* Bell (alert) char */
|
||
case 'b':
|
||
return '\b';
|
||
case 'e': /* Escape character */
|
||
return 033;
|
||
case 'f':
|
||
return '\f';
|
||
case 'n':
|
||
return '\n';
|
||
case 'r':
|
||
return '\r';
|
||
case 't':
|
||
return '\t';
|
||
case 'v':
|
||
return '\v';
|
||
case '\n':
|
||
return -2;
|
||
case 0:
|
||
(*string_ptr)--;
|
||
return 0;
|
||
case '^':
|
||
c = *(*string_ptr)++;
|
||
if (c == '\\')
|
||
c = parse_escape (string_ptr);
|
||
if (c == '?')
|
||
return 0177;
|
||
return (c & 0200) | (c & 037);
|
||
|
||
case '0':
|
||
case '1':
|
||
case '2':
|
||
case '3':
|
||
case '4':
|
||
case '5':
|
||
case '6':
|
||
case '7':
|
||
{
|
||
register int i = c - '0';
|
||
register int count = 0;
|
||
while (++count < 3)
|
||
{
|
||
if ((c = *(*string_ptr)++) >= '0' && c <= '7')
|
||
{
|
||
i *= 8;
|
||
i += c - '0';
|
||
}
|
||
else
|
||
{
|
||
(*string_ptr)--;
|
||
break;
|
||
}
|
||
}
|
||
return i;
|
||
}
|
||
default:
|
||
return c;
|
||
}
|
||
}
|
||
|
||
/* 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);
|
||
|
||
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':
|
||
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 lines and chars per page */
|
||
void
|
||
init_page_info (void)
|
||
{
|
||
#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 (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 */
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
set_width_command (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. */
|
||
|
||
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 = readline (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);
|
||
}
|
||
free (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)
|
||
abort ();
|
||
|
||
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;
|
||
}
|
||
}
|
||
|
||
/* 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;
|
||
}
|
||
|
||
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;
|
||
|
||
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 (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;
|
||
|
||
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_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)
|
||
free (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++ 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
|
||
{
|
||
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++
|
||
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');
|
||
}
|
||
|
||
|
||
/*
|
||
** 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,
|
||
(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,
|
||
"Set number of lines gdb thinks are in a page.", &setlist),
|
||
&showlist);
|
||
|
||
init_page_info ();
|
||
|
||
/* If the output is not a terminal, don't paginate it. */
|
||
if (!ui_file_isatty (gdb_stdout))
|
||
lines_per_page = UINT_MAX;
|
||
|
||
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.",
|
||
&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++ names in disassembly listings.",
|
||
&setprintlist),
|
||
&showprintlist);
|
||
}
|
||
|
||
/* Machine specific function to handle SIGWINCH signal. */
|
||
|
||
#ifdef SIGWINCH_HANDLER_BODY
|
||
SIGWINCH_HANDLER_BODY
|
||
#endif
|
||
|
||
/* 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 (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 (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;
|
||
}
|
||
|
||
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 (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 (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 (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 (void)
|
||
{
|
||
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;
|
||
}
|
||
|
||
|
||
/* Convert to / from the hosts pointer to GDB's internal CORE_ADDR
|
||
using the target's conversion routines. */
|
||
CORE_ADDR
|
||
host_pointer_to_address (void *ptr)
|
||
{
|
||
if (sizeof (ptr) != TYPE_LENGTH (builtin_type_ptr))
|
||
internal_error ("core_addr_to_void_ptr: bad cast");
|
||
return POINTER_TO_ADDRESS (builtin_type_ptr, &ptr);
|
||
}
|
||
|
||
void *
|
||
address_to_host_pointer (CORE_ADDR addr)
|
||
{
|
||
void *ptr;
|
||
if (sizeof (ptr) != TYPE_LENGTH (builtin_type_ptr))
|
||
internal_error ("core_addr_to_void_ptr: bad cast");
|
||
ADDRESS_TO_POINTER (builtin_type_ptr, &ptr, addr);
|
||
return ptr;
|
||
}
|