/* General utility routines for GDB, the GNU debugger.
- Copyright (C) 1986 Free Software Foundation, Inc.
-
-GDB is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY. No author or distributor accepts responsibility to anyone
-for the consequences of using it or for whether it serves any
-particular purpose or works at all, unless he says so in writing.
-Refer to the GDB General Public License for full details.
-
-Everyone is granted permission to copy, modify and redistribute GDB,
-but only under the conditions described in the GDB General Public
-License. A copy of this license is supposed to have been given to you
-along with GDB so you can know your rights and responsibilities. It
-should be in a file named COPYING. Among other things, the copyright
-notice and this notice must be preserved on all copies.
-
-In other words, go ahead and share GDB, but don't try to stop
-anyone else from sharing it farther. Help stamp out software hoarding!
-*/
-
-#include <stdio.h>
-#include <signal.h>
-#include <sys/ioctl.h>
-#include <sys/param.h>
+ Copyright 1986, 89, 90, 91, 92, 95, 1996 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
#include "defs.h"
-#include "param.h"
-#ifdef HAVE_TERMIO
-#include <termio.h>
+#ifdef ANSI_PROTOTYPES
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+#include <ctype.h>
+#include "gdb_string.h"
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include "signals.h"
+#include "gdbcmd.h"
+#include "serial.h"
+#include "bfd.h"
+#include "target.h"
+#include "demangle.h"
+#include "expression.h"
+#include "language.h"
+#include "annotate.h"
+
+#include "readline.h"
+
+/* readline defines this. */
+#undef savestring
+
+/* Prototypes for local functions */
+
+static void vfprintf_maybe_filtered PARAMS ((FILE *, const char *, va_list, int));
+
+static void fputs_maybe_filtered PARAMS ((const char *, FILE *, int));
+
+#if !defined (NO_MMALLOC) && !defined (NO_MMCHECK)
+static void malloc_botch PARAMS ((void));
#endif
-void error ();
-void fatal ();
+static void
+fatal_dump_core PARAMS((char *, ...));
+
+static void
+prompt_for_continue PARAMS ((void));
+
+static void
+set_width_command PARAMS ((char *, int, struct cmd_list_element *));
+
+/* If this definition isn't overridden by the header files, assume
+ that isatty and fileno exist on this system. */
+#ifndef ISATTY
+#define ISATTY(FP) (isatty (fileno (FP)))
+#endif
/* Chain of cleanup actions established with make_cleanup,
to be executed if an error happens. */
-static struct cleanup *cleanup_chain;
+static struct cleanup *cleanup_chain; /* cleaned up after a failed command */
+static struct cleanup *final_cleanup_chain; /* cleaned up when gdb exits */
+static struct cleanup *run_cleanup_chain; /* cleaned up on each 'run' */
+
+/* Nonzero if we have job control. */
+
+int job_control;
/* Nonzero means a quit has been requested. */
int quit_flag;
-/* Nonzero means quit immediately if Control-C is typed now,
- rather than waiting until QUIT is executed. */
+/* Nonzero means quit immediately if Control-C is typed now, rather
+ than waiting until QUIT is executed. Be careful in setting this;
+ code which executes with immediate_quit set has to be very careful
+ about being able to deal with being interrupted at any time. It is
+ almost always better to use QUIT; the only exception I can think of
+ is being able to quit out of a system call (using EINTR loses if
+ the SIGINT happens between the previous QUIT and the system call).
+ To immediately quit in the case in which a SIGINT happens between
+ the previous QUIT and setting immediate_quit (desirable anytime we
+ expect to block), call QUIT after setting immediate_quit. */
int immediate_quit;
+
+/* Nonzero means that encoded C++ names should be printed out in their
+ C++ form rather than raw. */
+
+int demangle = 1;
+
+/* Nonzero means that encoded C++ names should be printed out in their
+ C++ form even in assembler language displays. If this is set, but
+ DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
+
+int asm_demangle = 0;
+
+/* Nonzero means that strings with character values >0x7F should be printed
+ as octal escapes. Zero means just print the value (e.g. it's an
+ international character, and the terminal or window can cope.) */
+
+int sevenbit_strings = 0;
+
+/* String to be printed before error messages, if any. */
+
+char *error_pre_print;
+
+/* String to be printed before quit messages, if any. */
+
+char *quit_pre_print;
+
+/* String to be printed before warning messages, if any. */
+
+char *warning_pre_print = "\nwarning: ";
\f
/* Add a new cleanup to the cleanup_chain,
and return the previous chain pointer
struct cleanup *
make_cleanup (function, arg)
- void (*function) ();
- int arg;
+ void (*function) PARAMS ((PTR));
+ PTR arg;
+{
+ return make_my_cleanup (&cleanup_chain, function, arg);
+}
+
+struct cleanup *
+make_final_cleanup (function, arg)
+ void (*function) PARAMS ((PTR));
+ PTR arg;
+{
+ return make_my_cleanup (&final_cleanup_chain, function, arg);
+}
+struct cleanup *
+make_run_cleanup (function, arg)
+ void (*function) PARAMS ((PTR));
+ PTR arg;
+{
+ return make_my_cleanup (&run_cleanup_chain, function, arg);
+}
+struct cleanup *
+make_my_cleanup (pmy_chain, function, arg)
+ struct cleanup **pmy_chain;
+ void (*function) PARAMS ((PTR));
+ PTR arg;
{
register struct cleanup *new
= (struct cleanup *) xmalloc (sizeof (struct cleanup));
- register struct cleanup *old_chain = cleanup_chain;
+ register struct cleanup *old_chain = *pmy_chain;
- new->next = cleanup_chain;
+ new->next = *pmy_chain;
new->function = function;
new->arg = arg;
- cleanup_chain = new;
+ *pmy_chain = new;
return old_chain;
}
void
do_cleanups (old_chain)
register struct cleanup *old_chain;
+{
+ do_my_cleanups (&cleanup_chain, old_chain);
+}
+
+void
+do_final_cleanups (old_chain)
+ register struct cleanup *old_chain;
+{
+ do_my_cleanups (&final_cleanup_chain, old_chain);
+}
+
+void
+do_run_cleanups (old_chain)
+ register struct cleanup *old_chain;
+{
+ do_my_cleanups (&run_cleanup_chain, old_chain);
+}
+
+void
+do_my_cleanups (pmy_chain, old_chain)
+ register struct cleanup **pmy_chain;
+ register struct cleanup *old_chain;
{
register struct cleanup *ptr;
- while ((ptr = cleanup_chain) != old_chain)
+ while ((ptr = *pmy_chain) != old_chain)
{
+ *pmy_chain = ptr->next; /* Do this first incase recursion */
(*ptr->function) (ptr->arg);
- cleanup_chain = ptr->next;
free (ptr);
}
}
void
discard_cleanups (old_chain)
register struct cleanup *old_chain;
+{
+ discard_my_cleanups (&cleanup_chain, old_chain);
+}
+
+void
+discard_final_cleanups (old_chain)
+ register struct cleanup *old_chain;
+{
+ discard_my_cleanups (&final_cleanup_chain, old_chain);
+}
+
+void
+discard_my_cleanups (pmy_chain, old_chain)
+ register struct cleanup **pmy_chain;
+ register struct cleanup *old_chain;
{
register struct cleanup *ptr;
- while ((ptr = cleanup_chain) != old_chain)
+ while ((ptr = *pmy_chain) != old_chain)
{
- cleanup_chain = ptr->next;
- free (ptr);
+ *pmy_chain = ptr->next;
+ free ((PTR)ptr);
}
}
struct cleanup *
save_cleanups ()
{
- struct cleanup *old_chain = cleanup_chain;
+ return save_my_cleanups (&cleanup_chain);
+}
+
+struct cleanup *
+save_final_cleanups ()
+{
+ return save_my_cleanups (&final_cleanup_chain);
+}
+
+struct cleanup *
+save_my_cleanups (pmy_chain)
+ struct cleanup **pmy_chain;
+{
+ struct cleanup *old_chain = *pmy_chain;
- cleanup_chain = 0;
+ *pmy_chain = 0;
return old_chain;
}
restore_cleanups (chain)
struct cleanup *chain;
{
- cleanup_chain = chain;
+ restore_my_cleanups (&cleanup_chain, chain);
+}
+
+void
+restore_final_cleanups (chain)
+ struct cleanup *chain;
+{
+ restore_my_cleanups (&final_cleanup_chain, chain);
+}
+
+void
+restore_my_cleanups (pmy_chain, chain)
+ struct cleanup **pmy_chain;
+ struct cleanup *chain;
+{
+ *pmy_chain = chain;
}
/* This function is useful for cleanups.
{
free (*location);
}
+
+/* Provide a known function that does nothing, to use as a base for
+ for a possibly long chain of cleanups. This is useful where we
+ use the cleanup chain for handling normal cleanups as well as dealing
+ with cleanups that need to be done as a result of a call to error().
+ In such cases, we may not be certain where the first cleanup is, unless
+ we have a do-nothing one to always use as the base. */
+
+/* ARGSUSED */
+void
+null_cleanup (arg)
+ PTR arg;
+{
+}
+
\f
-/* Generally useful subroutines used throughout the program. */
+/* 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 ()
+{
+ 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. */
+
+/* VARARGS */
+void
+#ifdef ANSI_PROTOTYPES
+warning (const char *string, ...)
+#else
+warning (va_alist)
+ va_dcl
+#endif
+{
+ va_list args;
+#ifdef ANSI_PROTOTYPES
+ va_start (args, string);
+#else
+ char *string;
+
+ va_start (args);
+ string = va_arg (args, char *);
+#endif
+ 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 ()
+{
+ 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. */
+
+/* VARARGS */
+NORETURN void
+#ifdef ANSI_PROTOTYPES
+error (const char *string, ...)
+#else
+error (va_alist)
+ va_dcl
+#endif
+{
+ va_list args;
+#ifdef ANSI_PROTOTYPES
+ va_start (args, string);
+#else
+ va_start (args);
+#endif
+ if (error_hook)
+ (*error_hook) ();
+ else
+ {
+ error_begin ();
+#ifdef ANSI_PROTOTYPES
+ vfprintf_filtered (gdb_stderr, string, args);
+#else
+ {
+ char *string1;
+
+ string1 = va_arg (args, char *);
+ vfprintf_filtered (gdb_stderr, string1, args);
+ }
+#endif
+ fprintf_filtered (gdb_stderr, "\n");
+ va_end (args);
+ return_to_top_level (RETURN_ERROR);
+ }
+}
+
+
+/* Print an error message and exit reporting failure.
+ This is for a error that we cannot continue from.
+ The arguments are printed a la printf.
+
+ This function cannot be declared volatile (NORETURN) in an
+ ANSI environment because exit() is not declared volatile. */
+
+/* VARARGS */
+NORETURN void
+#ifdef ANSI_PROTOTYPES
+fatal (char *string, ...)
+#else
+fatal (va_alist)
+ va_dcl
+#endif
+{
+ va_list args;
+#ifdef ANSI_PROTOTYPES
+ va_start (args, string);
+#else
+ char *string;
+ va_start (args);
+ string = va_arg (args, char *);
+#endif
+ fprintf_unfiltered (gdb_stderr, "\ngdb: ");
+ vfprintf_unfiltered (gdb_stderr, string, args);
+ fprintf_unfiltered (gdb_stderr, "\n");
+ va_end (args);
+ exit (1);
+}
+
+/* Print an error message and exit, dumping core.
+ The arguments are printed a la printf (). */
-/* Like malloc but get error if no storage available. */
+/* VARARGS */
+static void
+#ifdef ANSI_PROTOTYPES
+fatal_dump_core (char *string, ...)
+#else
+fatal_dump_core (va_alist)
+ va_dcl
+#endif
+{
+ va_list args;
+#ifdef ANSI_PROTOTYPES
+ va_start (args, string);
+#else
+ char *string;
+
+ va_start (args);
+ string = va_arg (args, char *);
+#endif
+ /* "internal error" is always correct, since GDB should never dump
+ core, no matter what the input. */
+ fprintf_unfiltered (gdb_stderr, "\ngdb internal error: ");
+ vfprintf_unfiltered (gdb_stderr, string, args);
+ fprintf_unfiltered (gdb_stderr, "\n");
+ va_end (args);
+
+ signal (SIGQUIT, SIG_DFL);
+ kill (getpid (), SIGQUIT);
+ /* We should never get here, but just in case... */
+ exit (1);
+}
+
+/* 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 *
-xmalloc (size)
- long size;
+safe_strerror (errnum)
+ int errnum;
{
- register char *val = (char *) malloc (size);
- if (!val)
- fatal ("virtual memory exhausted.", 0);
- return val;
+ char *msg;
+ static char buf[32];
+
+ if ((msg = strerror (errnum)) == NULL)
+ {
+ sprintf (buf, "(undocumented errno %d)", errnum);
+ msg = buf;
+ }
+ return (msg);
}
-/* Like realloc but get error if no storage available. */
+/* The strsignal() function can return NULL for signal values that are
+ out of range. Provide a "safe" version that always returns a
+ printable string. */
char *
-xrealloc (ptr, size)
- char *ptr;
- long size;
+safe_strsignal (signo)
+ int signo;
{
- register char *val = (char *) realloc (ptr, size);
- if (!val)
- fatal ("virtual memory exhausted.", 0);
- return val;
+ char *msg;
+ static char buf[32];
+
+ if ((msg = strsignal (signo)) == NULL)
+ {
+ sprintf (buf, "(undocumented signal %d)", signo);
+ 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. */
-void
+NORETURN void
perror_with_name (string)
char *string;
{
- extern int sys_nerr;
- extern char *sys_errlist[];
- extern int errno;
char *err;
char *combined;
- if (errno < sys_nerr)
- err = sys_errlist[errno];
- else
- err = "unknown error";
-
+ 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);
}
char *string;
int errcode;
{
- extern int sys_nerr;
- extern char *sys_errlist[];
char *err;
char *combined;
- if (errcode < sys_nerr)
- err = sys_errlist[errcode];
- else
- err = "unknown error";
-
+ err = safe_strerror (errcode);
combined = (char *) alloca (strlen (err) + strlen (string) + 3);
strcpy (combined, string);
strcat (combined, ": ");
strcat (combined, err);
- printf ("%s.\n", combined);
+ /* We want anything which was printed on stdout to come out first, before
+ this message. */
+ gdb_flush (gdb_stdout);
+ fprintf_unfiltered (gdb_stderr, "%s.\n", combined);
}
+/* Control C eventually causes this to be called, at a convenient time. */
+
void
quit ()
{
- fflush (stdout);
-#ifdef HAVE_TERMIO
- ioctl (fileno (stdout), TCFLSH, 1);
-#else /* not HAVE_TERMIO */
- ioctl (fileno (stdout), TIOCFLUSH, 0);
-#endif /* not HAVE_TERMIO */
+ serial_t gdb_stdout_serial = serial_fdopen (1);
-#ifdef TIOCGPGRP
- error ("Quit");
-#else
- error ("Quit (expect signal %d when inferior is resumed)", SIGINT);
-#endif /* TIOCGPGRP */
+ 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_FLUSH_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);
+
+ 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");
+ return_to_top_level (RETURN_QUIT);
}
-/* Control C comes here */
+
+#if defined(__GO32__)
+
+/* In the absence of signals, poll keyboard for a quit.
+ Called from #define QUIT pollquit() in xm-go32.h. */
void
-request_quit ()
+notice_quit()
{
- quit_flag = 1;
+ if (kbhit ())
+ switch (getkey ())
+ {
+ case 1:
+ quit_flag = 1;
+ break;
+ case 2:
+ immediate_quit = 2;
+ break;
+ default:
+ /* We just ignore it */
+ /* FIXME!! Don't think this actually works! */
+ fprintf_unfiltered (gdb_stderr, "CTRL-A to quit, CTRL-B to quit harder\n");
+ break;
+ }
+}
-#ifdef USG
- /* Restore the signal handler */
- signal(SIGINT, request_quit);
-#endif
+#elif defined(_MSC_VER) /* should test for wingdb instead? */
- if (immediate_quit)
- quit ();
+/*
+ * Windows translates all keyboard and mouse events
+ * into a message which is appended to the message
+ * queue for the process.
+ */
+
+void notice_quit()
+{
+ int k = win32pollquit();
+ if (k == 1)
+ quit_flag = 1;
+ else if (k == 2)
+ immediate_quit = 1;
}
-/* Print an error message and return to command level.
- STRING is the error message, used as a fprintf string,
- and ARG is passed as an argument to it. */
+#else /* !defined(__GO32__) && !defined(_MSC_VER) */
+
+void notice_quit()
+{
+ /* Done by signals */
+}
+
+#endif /* !defined(__GO32__) && !defined(_MSC_VER) */
void
-error (string, arg1, arg2, arg3)
- char *string;
- int arg1, arg2, arg3;
+pollquit()
{
- fflush (stdout);
- fprintf (stderr, string, arg1, arg2, arg3);
- fprintf (stderr, "\n");
- return_to_top_level ();
+ notice_quit ();
+ if (quit_flag || immediate_quit)
+ quit ();
}
-/* Print an error message and exit reporting failure.
- This is for a error that we cannot continue from.
- STRING and ARG are passed to fprintf. */
+/* Control C comes here */
void
-fatal (string, arg)
- char *string;
- int arg;
+request_quit (signo)
+ int signo;
{
- fprintf (stderr, "gdb: ");
- fprintf (stderr, string, arg);
- fprintf (stderr, "\n");
- exit (1);
+ 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
}
-/* 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. */
+\f
+/* Memory management stuff (malloc friends). */
-char *
-savestring (ptr, size)
- char *ptr;
- int size;
+/* 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 (NO_MMALLOC)
+
+PTR
+mmalloc (md, size)
+ PTR md;
+ size_t size;
{
- register char *p = (char *) xmalloc (size + 1);
- bcopy (ptr, p, size);
- p[size] = 0;
- return p;
+ return malloc (size);
}
-char *
-concat (s1, s2, s3)
- char *s1, *s2, *s3;
+PTR
+mrealloc (md, ptr, size)
+ PTR md;
+ PTR ptr;
+ size_t size;
{
- register int len = strlen (s1) + strlen (s2) + strlen (s3) + 1;
- register char *val = (char *) xmalloc (len);
- strcpy (val, s1);
- strcat (val, s2);
- strcat (val, s3);
- return val;
+ if (ptr == 0) /* Guard against old realloc's */
+ return malloc (size);
+ else
+ return realloc (ptr, size);
}
void
-print_spaces (n, file)
- register int n;
- register FILE *file;
+mfree (md, ptr)
+ PTR md;
+ PTR ptr;
{
- while (n-- > 0)
- fputc (' ', file);
+ free (ptr);
}
-/* 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. */
+#endif /* NO_MMALLOC */
-int
-query (ctlstr, arg1, arg2)
- char *ctlstr;
+#if defined (NO_MMALLOC) || defined (NO_MMCHECK)
+
+void
+init_malloc (md)
+ PTR md;
{
- register int answer;
+}
- /* Automatically answer "yes" if input is not from a terminal. */
- if (!input_from_terminal_p ())
- return 1;
+#else /* Have mmalloc and want corruption checking */
- while (1)
- {
- printf (ctlstr, arg1, arg2);
- printf ("(y or n) ");
- fflush (stdout);
- answer = fgetc (stdin);
- clearerr (stdin); /* in case of C-d */
- if (answer != '\n')
- while (fgetc (stdin) != '\n') clearerr (stdin);
- if (answer >= 'a')
- answer -= 040;
- if (answer == 'Y')
- return 1;
- if (answer == 'N')
- return 0;
- printf ("Please answer y or n.\n");
- }
+static void
+malloc_botch ()
+{
+ fatal_dump_core ("Memory corruption");
}
-\f
-/* Parse a C escape sequence. STRING_PTR points to a variable
+
+/* 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 (md)
+ PTR 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 (size)
+ long size;
+{
+ if (size > 0)
+ {
+ fatal ("virtual memory exhausted: can't allocate %ld bytes.", size);
+ }
+ else
+ {
+ fatal ("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 (md, size)
+ 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 (md, ptr, size)
+ 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)
+ size_t size;
+{
+ return (xmmalloc ((PTR) NULL, size));
+}
+
+/* Like mrealloc but get error if no storage available. */
+
+PTR
+xrealloc (ptr, size)
+ PTR ptr;
+ size_t size;
+{
+ return (xmrealloc ((PTR) NULL, ptr, size));
+}
+
+\f
+/* My replacement for the read system call.
+ Used like `read' but keeps going if `read' returns too soon. */
+
+int
+myread (desc, addr, len)
+ 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;
+}
+\f
+/* 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 (ptr, size)
+ const char *ptr;
+ int size;
+{
+ register char *p = (char *) xmalloc (size + 1);
+ memcpy (p, ptr, size);
+ p[size] = 0;
+ return p;
+}
+
+char *
+msavestring (md, ptr, size)
+ PTR 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 (ptr)
+ const char *ptr;
+{
+ return savestring (ptr, strlen (ptr));
+}
+
+char *
+mstrsave (md, ptr)
+ PTR md;
+ const char *ptr;
+{
+ return (msavestring (md, ptr, strlen (ptr)));
+}
+
+void
+print_spaces (n, file)
+ register int n;
+ register FILE *file;
+{
+ while (n-- > 0)
+ fputc (' ', file);
+}
+
+/* Print a host address. */
+
+void
+gdb_print_address (addr, stream)
+ PTR addr;
+ GDB_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
+#ifdef ANSI_PROTOTYPES
+query (char *ctlstr, ...)
+#else
+query (va_alist)
+ va_dcl
+#endif
+{
+ va_list args;
+ register int answer;
+ register int ans2;
+ int retval;
+
+#ifdef ANSI_PROTOTYPES
+ va_start (args, ctlstr);
+#else
+ char *ctlstr;
+ va_start (args);
+ ctlstr = va_arg (args, char *);
+#endif
+
+ 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 */
+
+ gdb_flush (gdb_stdout);
+ answer = fgetc (stdin);
+ clearerr (stdin); /* in case of C-d */
+ if (answer == EOF) /* C-d */
+ {
+ retval = 1;
+ break;
+ }
+ if (answer != '\n') /* Eat rest of input line, to EOF or newline */
+ do
+ {
+ ans2 = fgetc (stdin);
+ clearerr (stdin);
+ }
+ while (ans2 != EOF && ans2 != '\n');
+ 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;
+}
+
+\f
+/* Parse a C escape sequence. STRING_PTR points to a variable
containing a pointer to the string to parse. That pointer
+ should point to the character after the \. That pointer
is updated past the characters we use. The value of the
escape sequence is returned.
switch (c)
{
case 'a':
- return '\a';
+ return 007; /* Bell (alert) char */
case 'b':
return '\b';
- case 'e':
+ case 'e': /* Escape character */
return 033;
case 'f':
return '\f';
}
}
\f
-/* Print the character CH on STREAM as part of the contents
- of a literal string whose delimiter is QUOTER. */
+/* 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. */
void
-printchar (ch, stream, quoter)
- unsigned char ch;
+gdb_printchar (c, stream, quoter)
+ register int c;
FILE *stream;
int quoter;
{
- register int c = ch;
- if (c < 040 || c >= 0177)
- {
- if (c == '\n')
- fprintf (stream, "\\n");
- else if (c == '\b')
- fprintf (stream, "\\b");
- else if (c == '\t')
- fprintf (stream, "\\t");
- else if (c == '\f')
- fprintf (stream, "\\f");
- else if (c == '\r')
- fprintf (stream, "\\r");
- else if (c == 033)
- fprintf (stream, "\\e");
- else if (c == '\a')
- fprintf (stream, "\\a");
- else
- fprintf (stream, "\\%03o", c);
+
+ c &= 0xFF; /* Avoid sign bit follies */
+
+ if ( c < 0x20 || /* Low control chars */
+ (c >= 0x7F && c < 0xA0) || /* DEL, High controls */
+ (sevenbit_strings && c >= 0x80)) { /* high order bit set */
+ switch (c)
+ {
+ case '\n':
+ fputs_filtered ("\\n", stream);
+ break;
+ case '\b':
+ fputs_filtered ("\\b", stream);
+ break;
+ case '\t':
+ fputs_filtered ("\\t", stream);
+ break;
+ case '\f':
+ fputs_filtered ("\\f", stream);
+ break;
+ case '\r':
+ fputs_filtered ("\\r", stream);
+ break;
+ case '\033':
+ fputs_filtered ("\\e", stream);
+ break;
+ case '\007':
+ fputs_filtered ("\\a", stream);
+ break;
+ default:
+ fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
+ break;
+ }
+ } else {
+ if (c == '\\' || c == quoter)
+ fputs_filtered ("\\", stream);
+ fprintf_filtered (stream, "%c", c);
+ }
+}
+\f
+/* Number of lines per page or UINT_MAX if paging is disabled. */
+static unsigned int lines_per_page;
+/* Number of chars per line or UNIT_MAX is line folding is disabled. */
+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;
+
+/* ARGSUSED */
+static void
+set_width_command (args, from_tty, c)
+ char *args;
+ int from_tty;
+ struct cmd_list_element *c;
+{
+ 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 */
+}
+
+/* Wait, so the user can read what's on the screen. Prompt the user
+ to continue by pressing RETURN. */
+
+static void
+prompt_for_continue ()
+{
+ char *ignore;
+ char cont_prompt[120];
+
+ if (annotation_level > 1)
+ printf_unfiltered ("\n\032\032pre-prompt-for-continue\n");
+
+ strcpy (cont_prompt,
+ "---Type <return> to continue, or q <return> to quit---");
+ if (annotation_level > 1)
+ strcat (cont_prompt, "\n\032\032prompt-for-continue\n");
+
+ /* We must do this *before* we call gdb_readline, else it will eventually
+ call us -- thinking that we're trying to print beyond the end of the
+ 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)
{
- if (c == '\\' || c == quoter)
- fputc ('\\', stream);
- fputc (c, stream);
+ char *p = ignore;
+ while (*p == ' ' || *p == '\t')
+ ++p;
+ if (p[0] == 'q')
+ request_quit (SIGINT);
+ 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. */
}
-\f
-#ifdef USG
-bcopy (from, to, count)
-char *from, *to;
+/* Reinitialize filter; ie. tell it to reset to original values. */
+
+void
+reinitialize_more_filter ()
{
- memcpy (to, from, count);
+ lines_printed = 0;
+ chars_printed = 0;
}
-bcmp (from, to, count)
+/* 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(indent)
+ char *indent;
{
- return (memcmp (to, from, count));
+ /* 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;
+ }
}
-bzero (to, count)
-char *to;
+/* 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 ()
{
- while (count--)
- *to++ = 0;
+ if (chars_printed > 0)
+ {
+ puts_filtered ("\n");
+ }
}
-getwd (buf)
-char *buf;
+
+GDB_FILE *
+gdb_fopen (name, mode)
+ char * name;
+ char * mode;
{
- getcwd (buf, MAXPATHLEN);
+ return fopen (name, mode);
}
-char *
-index (s, c)
- char *s;
+void
+gdb_flush (stream)
+ FILE *stream;
{
- char *strchr ();
- return strchr (s, c);
+ if (flush_hook
+ && (stream == gdb_stdout
+ || stream == gdb_stderr))
+ {
+ flush_hook (stream);
+ return;
+ }
+
+ fflush (stream);
}
-char *
-rindex (s, c)
- char *s;
+/* 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 (linebuffer, stream, filter)
+ const char *linebuffer;
+ FILE *stream;
+ int filter;
{
- char *strrchr ();
- return strrchr (s, c);
+ const char *lineptr;
+
+ if (linebuffer == 0)
+ return;
+
+ /* Don't do any filtering if it is disabled. */
+ if (stream != gdb_stdout
+ || (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++;
+ }
+ }
}
-/* Queue routines */
+void
+fputs_filtered (linebuffer, stream)
+ const char *linebuffer;
+ FILE *stream;
+{
+ fputs_maybe_filtered (linebuffer, stream, 1);
+}
+
+int
+putchar_unfiltered (c)
+ int c;
+{
+ char buf[2];
-struct queue {
- struct queue *forw;
- struct queue *back;
-};
+ buf[0] = c;
+ buf[1] = 0;
+ fputs_unfiltered (buf, gdb_stdout);
+ return c;
+}
-insque (item, after)
-struct queue *item;
-struct queue *after;
+int
+fputc_unfiltered (c, stream)
+ int c;
+ FILE * stream;
{
- item->forw = after->forw;
- after->forw->back = item;
+ char buf[2];
- item->back = after;
- after->forw = item;
+ buf[0] = c;
+ buf[1] = 0;
+ fputs_unfiltered (buf, stream);
+ return c;
}
-remque (item)
-struct queue *item;
+
+/* puts_debug is like fputs_unfiltered, except it prints special
+ characters in printable fashion. */
+
+void
+puts_debug (prefix, string, suffix)
+ char *prefix;
+ char *string;
+ char *suffix;
{
- item->forw->back = item->back;
- item->back->forw = item->forw;
+ int ch;
+
+ /* Print prefix and suffix after each line. */
+ static int new_line = 1;
+ static int carriage_return = 0;
+ static char *prev_prefix = "";
+ static char *prev_suffix = "";
+
+ if (*string == '\n')
+ carriage_return = 0;
+
+ /* If the prefix is changing, print the previous suffix, a new line,
+ and the new prefix. */
+ if ((carriage_return || (strcmp(prev_prefix, prefix) != 0)) && !new_line)
+ {
+ fputs_unfiltered (prev_suffix, gdb_stderr);
+ fputs_unfiltered ("\n", gdb_stderr);
+ fputs_unfiltered (prefix, gdb_stderr);
+ }
+
+ /* Print prefix if we printed a newline during the previous call. */
+ if (new_line)
+ {
+ new_line = 0;
+ fputs_unfiltered (prefix, gdb_stderr);
+ }
+
+ 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_stderr);
+
+ else
+ fprintf_unfiltered (gdb_stderr, "\\%03o", ch);
+ break;
+
+ case '\\': fputs_unfiltered ("\\\\", gdb_stderr); break;
+ case '\b': fputs_unfiltered ("\\b", gdb_stderr); break;
+ case '\f': fputs_unfiltered ("\\f", gdb_stderr); break;
+ case '\n': new_line = 1;
+ fputs_unfiltered ("\\n", gdb_stderr); break;
+ case '\r': fputs_unfiltered ("\\r", gdb_stderr); break;
+ case '\t': fputs_unfiltered ("\\t", gdb_stderr); break;
+ case '\v': fputs_unfiltered ("\\v", gdb_stderr); break;
+ }
+
+ carriage_return = ch == '\r';
+ }
+
+ /* Print suffix if we printed a newline. */
+ if (new_line)
+ {
+ fputs_unfiltered (suffix, gdb_stderr);
+ fputs_unfiltered ("\n", gdb_stderr);
+ }
}
-/*
- * There is too much variation in Sys V signal numbers and names, so
- * we must initialize them at runtime. If C provided a way to initialize
- * an array based on subscript and value, this would not be necessary.
- */
-static char undoc[] = "(undocumented)";
+/* 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. */
-char *sys_siglist[NSIG];
+static void
+vfprintf_maybe_filtered (stream, format, args, filter)
+ 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);
+}
-_initialize_utils()
+
+void
+vfprintf_filtered (stream, format, args)
+ FILE *stream;
+ const char *format;
+ va_list args;
{
- int i;
-
- for (i = 0; i < NSIG; i++)
- sys_siglist[i] = undoc;
+ vfprintf_maybe_filtered (stream, format, args, 1);
+}
-#ifdef SIGHUP
- sys_siglist[SIGHUP ] = "SIGHUP";
-#endif
-#ifdef SIGINT
- sys_siglist[SIGINT ] = "SIGINT";
-#endif
-#ifdef SIGQUIT
- sys_siglist[SIGQUIT ] = "SIGQUIT";
-#endif
-#ifdef SIGILL
- sys_siglist[SIGILL ] = "SIGILL";
-#endif
-#ifdef SIGTRAP
- sys_siglist[SIGTRAP ] = "SIGTRAP";
-#endif
-#ifdef SIGIOT
- sys_siglist[SIGIOT ] = "SIGIOT";
-#endif
-#ifdef SIGEMT
- sys_siglist[SIGEMT ] = "SIGEMT";
-#endif
-#ifdef SIGFPE
- sys_siglist[SIGFPE ] = "SIGFPE";
-#endif
-#ifdef SIGKILL
- sys_siglist[SIGKILL ] = "SIGKILL";
-#endif
-#ifdef SIGBUS
- sys_siglist[SIGBUS ] = "SIGBUS";
-#endif
-#ifdef SIGSEGV
- sys_siglist[SIGSEGV ] = "SIGSEGV";
-#endif
-#ifdef SIGSYS
- sys_siglist[SIGSYS ] = "SIGSYS";
-#endif
-#ifdef SIGPIPE
- sys_siglist[SIGPIPE ] = "SIGPIPE";
-#endif
-#ifdef SIGALRM
- sys_siglist[SIGALRM ] = "SIGALRM";
-#endif
-#ifdef SIGTERM
- sys_siglist[SIGTERM ] = "SIGTERM";
-#endif
-#ifdef SIGUSR1
- sys_siglist[SIGUSR1 ] = "SIGUSR1";
-#endif
-#ifdef SIGUSR2
- sys_siglist[SIGUSR2 ] = "SIGUSR2";
-#endif
-#ifdef SIGCLD
- sys_siglist[SIGCLD ] = "SIGCLD";
-#endif
-#ifdef SIGCHLD
- sys_siglist[SIGCHLD ] = "SIGCHLD";
-#endif
-#ifdef SIGPWR
- sys_siglist[SIGPWR ] = "SIGPWR";
+void
+vfprintf_unfiltered (stream, format, args)
+ 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 (format, args)
+ const char *format;
+ va_list args;
+{
+ vfprintf_maybe_filtered (gdb_stdout, format, args, 1);
+}
+
+void
+vprintf_unfiltered (format, args)
+ const char *format;
+ va_list args;
+{
+ vfprintf_unfiltered (gdb_stdout, format, args);
+}
+
+/* VARARGS */
+void
+#ifdef ANSI_PROTOTYPES
+fprintf_filtered (FILE *stream, const char *format, ...)
+#else
+fprintf_filtered (va_alist)
+ va_dcl
#endif
-#ifdef SIGTSTP
- sys_siglist[SIGTSTP ] = "SIGTSTP";
+{
+ va_list args;
+#ifdef ANSI_PROTOTYPES
+ va_start (args, format);
+#else
+ FILE *stream;
+ char *format;
+
+ va_start (args);
+ stream = va_arg (args, FILE *);
+ format = va_arg (args, char *);
#endif
-#ifdef SIGTTIN
- sys_siglist[SIGTTIN ] = "SIGTTIN";
+ vfprintf_filtered (stream, format, args);
+ va_end (args);
+}
+
+/* VARARGS */
+void
+#ifdef ANSI_PROTOTYPES
+fprintf_unfiltered (FILE *stream, const char *format, ...)
+#else
+fprintf_unfiltered (va_alist)
+ va_dcl
#endif
-#ifdef SIGTTOU
- sys_siglist[SIGTTOU ] = "SIGTTOU";
+{
+ va_list args;
+#ifdef ANSI_PROTOTYPES
+ va_start (args, format);
+#else
+ FILE *stream;
+ char *format;
+
+ va_start (args);
+ stream = va_arg (args, FILE *);
+ format = va_arg (args, char *);
#endif
-#ifdef SIGSTOP
- sys_siglist[SIGSTOP ] = "SIGSTOP";
+ vfprintf_unfiltered (stream, format, args);
+ va_end (args);
+}
+
+/* Like fprintf_filtered, but prints its result indented.
+ Called as fprintfi_filtered (spaces, stream, format, ...); */
+
+/* VARARGS */
+void
+#ifdef ANSI_PROTOTYPES
+fprintfi_filtered (int spaces, FILE *stream, const char *format, ...)
+#else
+fprintfi_filtered (va_alist)
+ va_dcl
#endif
-#ifdef SIGXCPU
- sys_siglist[SIGXCPU ] = "SIGXCPU";
+{
+ va_list args;
+#ifdef ANSI_PROTOTYPES
+ va_start (args, format);
+#else
+ int spaces;
+ FILE *stream;
+ char *format;
+
+ va_start (args);
+ spaces = va_arg (args, int);
+ stream = va_arg (args, FILE *);
+ format = va_arg (args, char *);
#endif
-#ifdef SIGXFSZ
- sys_siglist[SIGXFSZ ] = "SIGXFSZ";
+ print_spaces_filtered (spaces, stream);
+
+ vfprintf_filtered (stream, format, args);
+ va_end (args);
+}
+
+
+/* VARARGS */
+void
+#ifdef ANSI_PROTOTYPES
+printf_filtered (const char *format, ...)
+#else
+printf_filtered (va_alist)
+ va_dcl
#endif
-#ifdef SIGVTALRM
- sys_siglist[SIGVTALRM ] = "SIGVTALRM";
+{
+ va_list args;
+#ifdef ANSI_PROTOTYPES
+ va_start (args, format);
+#else
+ char *format;
+
+ va_start (args);
+ format = va_arg (args, char *);
#endif
-#ifdef SIGPROF
- sys_siglist[SIGPROF ] = "SIGPROF";
+ vfprintf_filtered (gdb_stdout, format, args);
+ va_end (args);
+}
+
+
+/* VARARGS */
+void
+#ifdef ANSI_PROTOTYPES
+printf_unfiltered (const char *format, ...)
+#else
+printf_unfiltered (va_alist)
+ va_dcl
#endif
-#ifdef SIGWINCH
- sys_siglist[SIGWINCH ] = "SIGWINCH";
+{
+ va_list args;
+#ifdef ANSI_PROTOTYPES
+ va_start (args, format);
+#else
+ char *format;
+
+ va_start (args);
+ format = va_arg (args, char *);
#endif
-#ifdef SIGCONT
- sys_siglist[SIGCONT ] = "SIGCONT";
+ vfprintf_unfiltered (gdb_stdout, format, args);
+ va_end (args);
+}
+
+/* Like printf_filtered, but prints it's result indented.
+ Called as printfi_filtered (spaces, format, ...); */
+
+/* VARARGS */
+void
+#ifdef ANSI_PROTOTYPES
+printfi_filtered (int spaces, const char *format, ...)
+#else
+printfi_filtered (va_alist)
+ va_dcl
#endif
-#ifdef SIGURG
- sys_siglist[SIGURG ] = "SIGURG";
+{
+ va_list args;
+#ifdef ANSI_PROTOTYPES
+ va_start (args, format);
+#else
+ int spaces;
+ char *format;
+
+ va_start (args);
+ spaces = va_arg (args, int);
+ format = va_arg (args, char *);
#endif
-#ifdef SIGIO
- sys_siglist[SIGIO ] = "SIGIO";
+ 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 (string)
+ const char *string;
+{
+ fputs_filtered (string, gdb_stdout);
+}
+
+void
+puts_unfiltered (string)
+ 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 (n)
+ int n;
+{
+ register char *t;
+ static char *spaces;
+ static int max_spaces;
+
+ 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 (n, stream)
+ int n;
+ FILE *stream;
+{
+ fputs_filtered (n_spaces (n), stream);
+}
+\f
+/* 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 (stream, name, lang, arg_mode)
+ 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 (string1, string2)
+ 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');
+}
+
+\f
+void
+initialize_utils ()
+{
+ struct cmd_list_element *c;
+
+ c = add_set_cmd ("width", class_support, var_uinteger,
+ (char *)&chars_per_line,
+ "Set number of characters gdb thinks are in a line.",
+ &setlist);
+ 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);
+
+ /* 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;
+
+ val = tgetnum ("li");
+ if (val >= 0)
+ lines_per_page = val;
+ else
+ /* The number of lines per page is not mentioned
+ in the terminal description. This probably means
+ that paging is not useful (e.g. emacs shell window),
+ so disable paging. */
+ lines_per_page = UINT_MAX;
+
+ val = tgetnum ("co");
+ if (val >= 0)
+ chars_per_line = val;
+ }
+ }
+ }
+#endif /* MPW */
+
+#if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
+
+ /* If there is a better way to determine the window size, use it. */
+ SIGWINCH_HANDLER ();
#endif
-#ifdef SIGWIND
- sys_siglist[SIGWIND ] = "SIGWIND";
#endif
-#ifdef SIGPHONE
- sys_siglist[SIGPHONE ] = "SIGPHONE";
+ /* If the output is not a terminal, don't paginate it. */
+ if (!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 ("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
-#ifdef SIGPOLL
- sys_siglist[SIGPOLL ] = "SIGPOLL";
+\f
+/* Support for converting target fp numbers into host DOUBLEST format. */
+
+/* XXX - This code should really be in libiberty/floatformat.c, however
+ configuration issues with libiberty made this very difficult to do in the
+ available time. */
+
+#include "floatformat.h"
+#include <math.h> /* ldexp */
+
+/* The odds that CHAR_BIT will be anything but 8 are low enough that I'm not
+ going to bother with trying to muck around with whether it is defined in
+ a system header, what we do if not, etc. */
+#define FLOATFORMAT_CHAR_BIT 8
+
+static unsigned long get_field PARAMS ((unsigned char *,
+ enum floatformat_byteorders,
+ unsigned int,
+ unsigned int,
+ unsigned int));
+
+/* Extract a field which starts at START and is LEN bytes long. DATA and
+ TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
+static unsigned long
+get_field (data, order, total_len, start, len)
+ unsigned char *data;
+ enum floatformat_byteorders order;
+ unsigned int total_len;
+ unsigned int start;
+ unsigned int len;
+{
+ unsigned long result;
+ unsigned int cur_byte;
+ int cur_bitshift;
+
+ /* Start at the least significant part of the field. */
+ cur_byte = (start + len) / FLOATFORMAT_CHAR_BIT;
+ if (order == floatformat_little || order == floatformat_littlebyte_bigword)
+ cur_byte = (total_len / FLOATFORMAT_CHAR_BIT) - cur_byte - 1;
+ cur_bitshift =
+ ((start + len) % FLOATFORMAT_CHAR_BIT) - FLOATFORMAT_CHAR_BIT;
+ result = *(data + cur_byte) >> (-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; zero out the bits which are not part of
+ this field. */
+ result |=
+ (*(data + cur_byte) & ((1 << (len - cur_bitshift)) - 1))
+ << cur_bitshift;
+ else
+ result |= *(data + cur_byte) << cur_bitshift;
+ cur_bitshift += FLOATFORMAT_CHAR_BIT;
+ if (order == floatformat_little || order == floatformat_littlebyte_bigword)
+ ++cur_byte;
+ else
+ --cur_byte;
+ }
+ return result;
+}
+
+/* Convert from FMT to a DOUBLEST.
+ FROM is the address of the extended float.
+ Store the DOUBLEST in *TO. */
+
+void
+floatformat_to_doublest (fmt, from, to)
+ const struct floatformat *fmt;
+ char *from;
+ DOUBLEST *to;
+{
+ unsigned char *ufrom = (unsigned char *)from;
+ DOUBLEST dto;
+ long exponent;
+ unsigned long mant;
+ unsigned int mant_bits, mant_off;
+ int mant_bits_left;
+ int special_exponent; /* It's a NaN, denorm or zero */
+
+ /* If the mantissa bits are not contiguous from one end of the
+ mantissa to the other, we need to make a private copy of the
+ source bytes that is in the right order since the unpacking
+ algorithm assumes that the bits are contiguous.
+
+ Swap the bytes individually rather than accessing them through
+ "long *" since we have no guarantee that they start on a long
+ alignment, and also sizeof(long) for the host could be different
+ than sizeof(long) for the target. FIXME: Assumes sizeof(long)
+ for the target is 4. */
+
+ if (fmt -> byteorder == floatformat_littlebyte_bigword)
+ {
+ static unsigned char *newfrom;
+ unsigned char *swapin, *swapout;
+ int longswaps;
+
+ longswaps = fmt -> totalsize / FLOATFORMAT_CHAR_BIT;
+ longswaps >>= 3;
+
+ if (newfrom == NULL)
+ {
+ newfrom = 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 zero's, denorms or NaNs. */
+ if (!special_exponent)
+ exponent -= fmt->exp_bias;
+
+ /* Build the result algebraically. Might go infinite, underflow, etc;
+ who cares. */
+
+/* If this format uses a hidden bit, explicitly add it in now. Otherwise,
+ increment the exponent by one to account for the integer bit. */
+
+ if (!special_exponent)
+ if (fmt->intbit == floatformat_intbit_no)
+ dto = ldexp (1.0, exponent);
+ else
+ exponent++;
+
+ while (mant_bits_left > 0)
+ {
+ mant_bits = min (mant_bits_left, 32);
+
+ mant = get_field (ufrom, fmt->byteorder, fmt->totalsize,
+ mant_off, mant_bits);
+
+ dto += ldexp ((double)mant, exponent - mant_bits);
+ exponent -= mant_bits;
+ mant_off += mant_bits;
+ mant_bits_left -= mant_bits;
+ }
+
+ /* Negate it if negative. */
+ if (get_field (ufrom, fmt->byteorder, fmt->totalsize, fmt->sign_start, 1))
+ dto = -dto;
+ *to = dto;
+}
+\f
+static void put_field PARAMS ((unsigned char *, enum floatformat_byteorders,
+ unsigned int,
+ unsigned int,
+ unsigned int,
+ unsigned long));
+
+/* Set a field which starts at START and is LEN bytes long. DATA and
+ TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
+static void
+put_field (data, order, total_len, start, len, stuff_to_put)
+ unsigned char *data;
+ enum floatformat_byteorders order;
+ unsigned int total_len;
+ unsigned int start;
+ unsigned int len;
+ unsigned long stuff_to_put;
+{
+ unsigned int cur_byte;
+ int cur_bitshift;
+
+ /* Start at the least significant part of the field. */
+ cur_byte = (start + len) / FLOATFORMAT_CHAR_BIT;
+ if (order == floatformat_little || order == floatformat_littlebyte_bigword)
+ cur_byte = (total_len / FLOATFORMAT_CHAR_BIT) - cur_byte - 1;
+ cur_bitshift =
+ ((start + len) % FLOATFORMAT_CHAR_BIT) - 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 PARAMS ((long double value, int *eptr));
+
+static long double
+ldfrexp (value, eptr)
+ long double value;
+ int *eptr;
+{
+ long double tmp;
+ int exp;
+
+ /* Unfortunately, there are no portable functions for extracting the exponent
+ of a long double, so we have to do it iteratively by multiplying or dividing
+ by two until the fraction is between 0.5 and 1.0. */
+
+ if (value < 0.0l)
+ value = -value;
+
+ tmp = 1.0l;
+ exp = 0;
+
+ if (value >= tmp) /* Value >= 1.0 */
+ while (value >= tmp)
+ {
+ tmp *= 2.0l;
+ exp++;
+ }
+ else if (value != 0.0l) /* Value < 1.0 and > 0.0 */
+ {
+ while (value < tmp)
+ {
+ tmp /= 2.0l;
+ exp--;
+ }
+ tmp *= 2.0l;
+ exp++;
+ }
+
+ *eptr = exp;
+ return value/tmp;
+}
+#endif /* HAVE_LONG_DOUBLE */
+
+
+/* The converse: convert the DOUBLEST *FROM to an extended float
+ and store where TO points. Neither FROM nor TO have any alignment
+ restrictions. */
+
+void
+floatformat_from_doublest (fmt, from, to)
+ CONST struct floatformat *fmt;
+ DOUBLEST *from;
+ char *to;
+{
+ DOUBLEST dfrom;
+ int exponent;
+ DOUBLEST mant;
+ unsigned int mant_bits, mant_off;
+ int mant_bits_left;
+ unsigned char *uto = (unsigned char *)to;
+
+ memcpy (&dfrom, from, sizeof (dfrom));
+ memset (uto, 0, fmt->totalsize / FLOATFORMAT_CHAR_BIT);
+ 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;
+ 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_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;
+ }
+ }
+}
+
+/* temporary storage using circular buffer */
+#define NUMCELLS 16
+#define CELLSIZE 32
+static char*
+get_cell()
+{
+ static char buf[NUMCELLS][CELLSIZE];
+ static int cell=0;
+ if (++cell>=NUMCELLS) cell=0;
+ return buf[cell];
+}
+
+/* print routines to handle variable size regs, etc.
+
+ FIXME: Note that t_addr is a bfd_vma, which is currently either an
+ unsigned long or unsigned long long, determined at configure time.
+ If t_addr is an unsigned long long and sizeof (unsigned long long)
+ is greater than sizeof (unsigned long), then I believe this code will
+ probably lose, at least for little endian machines. I believe that
+ it would also be better to eliminate the switch on the absolute size
+ of t_addr and replace it with a sequence of if statements that compare
+ sizeof t_addr with sizeof the various types and do the right thing,
+ which includes knowing whether or not the host supports long long.
+ -fnf
+
+ */
+
+static int thirty_two = 32; /* eliminate warning from compiler on 32-bit systems */
+
+char*
+paddr(addr)
+ t_addr addr;
+{
+ char *paddr_str=get_cell();
+ switch (sizeof(t_addr))
+ {
+ case 8:
+ sprintf (paddr_str, "%08lx%08lx",
+ (unsigned long) (addr >> thirty_two), (unsigned long) (addr & 0xffffffff));
+ break;
+ case 4:
+ sprintf (paddr_str, "%08lx", (unsigned long) addr);
+ break;
+ case 2:
+ sprintf (paddr_str, "%04x", (unsigned short) (addr & 0xffff));
+ break;
+ default:
+ sprintf (paddr_str, "%lx", (unsigned long) addr);
+ }
+ return paddr_str;
+}
+
+char*
+preg(reg)
+ t_reg reg;
+{
+ char *preg_str=get_cell();
+ switch (sizeof(t_reg))
+ {
+ case 8:
+ sprintf (preg_str, "%08lx%08lx",
+ (unsigned long) (reg >> thirty_two), (unsigned long) (reg & 0xffffffff));
+ break;
+ case 4:
+ sprintf (preg_str, "%08lx", (unsigned long) reg);
+ break;
+ case 2:
+ sprintf (preg_str, "%04x", (unsigned short) (reg & 0xffff));
+ break;
+ default:
+ sprintf (preg_str, "%lx", (unsigned long) reg);
+ }
+ return preg_str;
}
-#endif /* USG */
+char*
+paddr_nz(addr)
+ t_addr addr;
+{
+ char *paddr_str=get_cell();
+ switch (sizeof(t_addr))
+ {
+ case 8:
+ {
+ unsigned long high = (unsigned long) (addr >> thirty_two);
+ if (high == 0)
+ sprintf (paddr_str, "%lx", (unsigned long) (addr & 0xffffffff));
+ else
+ sprintf (paddr_str, "%lx%08lx",
+ high, (unsigned long) (addr & 0xffffffff));
+ break;
+ }
+ case 4:
+ sprintf (paddr_str, "%lx", (unsigned long) addr);
+ break;
+ case 2:
+ sprintf (paddr_str, "%x", (unsigned short) (addr & 0xffff));
+ break;
+ default:
+ sprintf (paddr_str,"%lx", (unsigned long) addr);
+ }
+ return paddr_str;
+}
+
+char*
+preg_nz(reg)
+ t_reg reg;
+{
+ char *preg_str=get_cell();
+ switch (sizeof(t_reg))
+ {
+ case 8:
+ {
+ unsigned long high = (unsigned long) (reg >> thirty_two);
+ if (high == 0)
+ sprintf (preg_str, "%lx", (unsigned long) (reg & 0xffffffff));
+ else
+ sprintf (preg_str, "%lx%08lx",
+ high, (unsigned long) (reg & 0xffffffff));
+ break;
+ }
+ case 4:
+ sprintf (preg_str, "%lx", (unsigned long) reg);
+ break;
+ case 2:
+ sprintf (preg_str, "%x", (unsigned short) (reg & 0xffff));
+ break;
+ default:
+ sprintf (preg_str, "%lx", (unsigned long) reg);
+ }
+ return preg_str;
+}
projects / deliverable / binutils-gdb.git / blobdiff