8989d4fc4b
consistency with error_begin. Also print warning_pre_print. Document it better. * utils.c (warning): Use it. * utils.c (error_begin): Doc fix. * rs6000-nat.c (vmap_ldinfo): If symfile_objfile is not part of any vmap, nuke it.
1851 lines
43 KiB
C
1851 lines
43 KiB
C
/* General utility routines for GDB, the GNU debugger.
|
||
Copyright 1986, 1989, 1990, 1991, 1992, 1995 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||
|
||
#include "defs.h"
|
||
#if !defined(__GO32__) && !defined(WIN32)
|
||
#include <sys/ioctl.h>
|
||
#include <sys/param.h>
|
||
#include <pwd.h>
|
||
#endif
|
||
#include <varargs.h>
|
||
#include <ctype.h>
|
||
#include <string.h>
|
||
|
||
#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 */
|
||
|
||
#if defined (NO_MMALLOC) || defined (NO_MMALLOC_CHECK)
|
||
#else
|
||
|
||
static void
|
||
malloc_botch PARAMS ((void));
|
||
|
||
#endif /* NO_MMALLOC, etc */
|
||
|
||
static void
|
||
fatal_dump_core (); /* Can't prototype with <varargs.h> usage... */
|
||
|
||
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;
|
||
|
||
/* Nonzero if we have job control. */
|
||
|
||
int job_control;
|
||
|
||
/* Nonzero means a quit has been requested. */
|
||
|
||
int quit_flag;
|
||
|
||
/* Nonzero means quit immediately if Control-C is typed now, rather
|
||
than waiting until QUIT is executed. Be careful in setting this;
|
||
code which executes with immediate_quit set has to be very careful
|
||
about being able to deal with being interrupted at any time. It is
|
||
almost always better to use QUIT; the only exception I can think of
|
||
is being able to quit out of a system call (using EINTR loses if
|
||
the SIGINT happens between the previous QUIT and the system call).
|
||
To immediately quit in the case in which a SIGINT happens between
|
||
the previous QUIT and setting immediate_quit (desirable anytime we
|
||
expect to block), call QUIT after setting immediate_quit. */
|
||
|
||
int immediate_quit;
|
||
|
||
/* Nonzero means that encoded C++ 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: ";
|
||
|
||
/* Add a new cleanup to the cleanup_chain,
|
||
and return the previous chain pointer
|
||
to be passed later to do_cleanups or discard_cleanups.
|
||
Args are FUNCTION to clean up with, and ARG to pass to it. */
|
||
|
||
struct cleanup *
|
||
make_cleanup (function, arg)
|
||
void (*function) PARAMS ((PTR));
|
||
PTR arg;
|
||
{
|
||
register struct cleanup *new
|
||
= (struct cleanup *) xmalloc (sizeof (struct cleanup));
|
||
register struct cleanup *old_chain = cleanup_chain;
|
||
|
||
new->next = cleanup_chain;
|
||
new->function = function;
|
||
new->arg = arg;
|
||
cleanup_chain = new;
|
||
|
||
return old_chain;
|
||
}
|
||
|
||
/* Discard cleanups and do the actions they describe
|
||
until we get back to the point OLD_CHAIN in the cleanup_chain. */
|
||
|
||
void
|
||
do_cleanups (old_chain)
|
||
register struct cleanup *old_chain;
|
||
{
|
||
register struct cleanup *ptr;
|
||
while ((ptr = cleanup_chain) != old_chain)
|
||
{
|
||
cleanup_chain = ptr->next; /* Do this first incase recursion */
|
||
(*ptr->function) (ptr->arg);
|
||
free (ptr);
|
||
}
|
||
}
|
||
|
||
/* Discard cleanups, not doing the actions they describe,
|
||
until we get back to the point OLD_CHAIN in the cleanup_chain. */
|
||
|
||
void
|
||
discard_cleanups (old_chain)
|
||
register struct cleanup *old_chain;
|
||
{
|
||
register struct cleanup *ptr;
|
||
while ((ptr = cleanup_chain) != old_chain)
|
||
{
|
||
cleanup_chain = ptr->next;
|
||
free ((PTR)ptr);
|
||
}
|
||
}
|
||
|
||
/* Set the cleanup_chain to 0, and return the old cleanup chain. */
|
||
struct cleanup *
|
||
save_cleanups ()
|
||
{
|
||
struct cleanup *old_chain = cleanup_chain;
|
||
|
||
cleanup_chain = 0;
|
||
return old_chain;
|
||
}
|
||
|
||
/* Restore the cleanup chain from a previously saved chain. */
|
||
void
|
||
restore_cleanups (chain)
|
||
struct cleanup *chain;
|
||
{
|
||
cleanup_chain = chain;
|
||
}
|
||
|
||
/* This function is useful for cleanups.
|
||
Do
|
||
|
||
foo = xmalloc (...);
|
||
old_chain = make_cleanup (free_current_contents, &foo);
|
||
|
||
to arrange to free the object thus allocated. */
|
||
|
||
void
|
||
free_current_contents (location)
|
||
char **location;
|
||
{
|
||
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)
|
||
char **arg;
|
||
{
|
||
}
|
||
|
||
|
||
/* 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
|
||
warning (va_alist)
|
||
va_dcl
|
||
{
|
||
va_list args;
|
||
char *string;
|
||
|
||
va_start (args);
|
||
warning_begin ();
|
||
string = va_arg (args, char *);
|
||
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
|
||
error (va_alist)
|
||
va_dcl
|
||
{
|
||
va_list args;
|
||
char *string;
|
||
|
||
va_start (args);
|
||
|
||
if (error_hook)
|
||
error_hook (args); /* Never returns */
|
||
|
||
error_begin ();
|
||
string = va_arg (args, char *);
|
||
vfprintf_filtered (gdb_stderr, string, args);
|
||
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
|
||
fatal (va_alist)
|
||
va_dcl
|
||
{
|
||
va_list args;
|
||
char *string;
|
||
|
||
va_start (args);
|
||
string = va_arg (args, char *);
|
||
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 (). */
|
||
|
||
/* VARARGS */
|
||
static void
|
||
fatal_dump_core (va_alist)
|
||
va_dcl
|
||
{
|
||
va_list args;
|
||
char *string;
|
||
|
||
va_start (args);
|
||
string = va_arg (args, char *);
|
||
/* "internal error" is always correct, since GDB should never dump
|
||
core, no matter what the input. */
|
||
fprintf_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 *
|
||
safe_strerror (errnum)
|
||
int errnum;
|
||
{
|
||
char *msg;
|
||
static char buf[32];
|
||
|
||
if ((msg = strerror (errnum)) == NULL)
|
||
{
|
||
sprintf (buf, "(undocumented errno %d)", errnum);
|
||
msg = buf;
|
||
}
|
||
return (msg);
|
||
}
|
||
|
||
/* 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 *
|
||
safe_strsignal (signo)
|
||
int signo;
|
||
{
|
||
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
|
||
perror_with_name (string)
|
||
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 (string, errcode)
|
||
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 ()
|
||
{
|
||
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_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);
|
||
}
|
||
|
||
|
||
#if defined(__GO32__)||defined(WIN32)
|
||
|
||
/* In the absence of signals, poll keyboard for a quit.
|
||
Called from #define QUIT pollquit() in xm-go32.h. */
|
||
|
||
void
|
||
pollquit()
|
||
{
|
||
if (kbhit ())
|
||
{
|
||
int k = getkey ();
|
||
if (k == 1) {
|
||
quit_flag = 1;
|
||
quit();
|
||
}
|
||
else if (k == 2) {
|
||
immediate_quit = 1;
|
||
quit ();
|
||
}
|
||
else
|
||
{
|
||
/* We just ignore it */
|
||
fprintf_unfiltered (gdb_stderr, "CTRL-A to quit, CTRL-B to quit harder\n");
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
#endif
|
||
#if defined(__GO32__)||defined(WIN32)
|
||
void notice_quit()
|
||
{
|
||
if (kbhit ())
|
||
{
|
||
int k = getkey ();
|
||
if (k == 1) {
|
||
quit_flag = 1;
|
||
}
|
||
else if (k == 2)
|
||
{
|
||
immediate_quit = 1;
|
||
}
|
||
else
|
||
{
|
||
fprintf_unfiltered (gdb_stderr, "CTRL-A to quit, CTRL-B to quit harder\n");
|
||
}
|
||
}
|
||
}
|
||
#else
|
||
void notice_quit()
|
||
{
|
||
/* Done by signals */
|
||
}
|
||
#endif
|
||
/* Control C comes here */
|
||
|
||
void
|
||
request_quit (signo)
|
||
int signo;
|
||
{
|
||
quit_flag = 1;
|
||
|
||
/* Restore the signal handler. Harmless with BSD-style signals, needed
|
||
for System V-style signals. So just always do it, rather than worrying
|
||
about USG defines and stuff like that. */
|
||
signal (signo, request_quit);
|
||
|
||
#ifdef REQUEST_QUIT
|
||
REQUEST_QUIT;
|
||
#else
|
||
if (immediate_quit)
|
||
quit ();
|
||
#endif
|
||
}
|
||
|
||
|
||
/* Memory management stuff (malloc friends). */
|
||
|
||
#if defined (NO_MMALLOC)
|
||
|
||
/* Make a substitute size_t for non-ANSI compilers. */
|
||
|
||
#ifdef _AIX
|
||
#include <stddef.h>
|
||
#else /* Not AIX */
|
||
#ifndef __STDC__
|
||
#ifndef size_t
|
||
#define size_t unsigned int
|
||
#endif
|
||
#endif
|
||
#endif /* Not AIX */
|
||
|
||
PTR
|
||
mmalloc (md, size)
|
||
PTR md;
|
||
size_t size;
|
||
{
|
||
return malloc (size);
|
||
}
|
||
|
||
PTR
|
||
mrealloc (md, ptr, size)
|
||
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 (md, ptr)
|
||
PTR md;
|
||
PTR ptr;
|
||
{
|
||
free (ptr);
|
||
}
|
||
|
||
#endif /* NO_MMALLOC */
|
||
|
||
#if defined (NO_MMALLOC) || defined (NO_MMALLOC_CHECK)
|
||
|
||
void
|
||
init_malloc (md)
|
||
PTR md;
|
||
{
|
||
}
|
||
|
||
#else /* have mmalloc and want corruption checking */
|
||
|
||
static void
|
||
malloc_botch ()
|
||
{
|
||
fatal_dump_core ("Memory corruption");
|
||
}
|
||
|
||
/* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified
|
||
by MD, to detect memory corruption. Note that MD may be NULL to specify
|
||
the default heap that grows via sbrk.
|
||
|
||
Note that for freshly created regions, we must call mmcheck prior to any
|
||
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. */
|
||
|
||
void
|
||
init_malloc (md)
|
||
PTR md;
|
||
{
|
||
if (!mmcheck (md, malloc_botch))
|
||
{
|
||
warning ("internal error: failed to install memory consistency checks");
|
||
}
|
||
|
||
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)
|
||
long size;
|
||
{
|
||
return (xmmalloc ((PTR) NULL, size));
|
||
}
|
||
|
||
/* Like mrealloc but get error if no storage available. */
|
||
|
||
PTR
|
||
xrealloc (ptr, size)
|
||
PTR ptr;
|
||
long 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 (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;
|
||
}
|
||
|
||
/* 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
|
||
query (va_alist)
|
||
va_dcl
|
||
{
|
||
va_list args;
|
||
char *ctlstr;
|
||
register int answer;
|
||
register int ans2;
|
||
int retval;
|
||
|
||
if (query_hook)
|
||
{
|
||
va_start (args);
|
||
return query_hook (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");
|
||
|
||
va_start (args);
|
||
ctlstr = va_arg (args, char *);
|
||
vfprintf_filtered (gdb_stdout, ctlstr, args);
|
||
va_end (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;
|
||
}
|
||
|
||
|
||
/* 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 (string_ptr)
|
||
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. */
|
||
|
||
void
|
||
gdb_printchar (c, stream, quoter)
|
||
register int c;
|
||
FILE *stream;
|
||
int quoter;
|
||
{
|
||
|
||
c &= 0xFF; /* Avoid sign bit follies */
|
||
|
||
if ( c < 0x20 || /* Low control chars */
|
||
(c >= 0x7F && c < 0xA0) || /* DEL, High controls */
|
||
(sevenbit_strings && c >= 0x80)) { /* high order bit set */
|
||
switch (c)
|
||
{
|
||
case '\n':
|
||
fputs_filtered ("\\n", stream);
|
||
break;
|
||
case '\b':
|
||
fputs_filtered ("\\b", stream);
|
||
break;
|
||
case '\t':
|
||
fputs_filtered ("\\t", stream);
|
||
break;
|
||
case '\f':
|
||
fputs_filtered ("\\f", stream);
|
||
break;
|
||
case '\r':
|
||
fputs_filtered ("\\r", stream);
|
||
break;
|
||
case '\033':
|
||
fputs_filtered ("\\e", stream);
|
||
break;
|
||
case '\007':
|
||
fputs_filtered ("\\a", stream);
|
||
break;
|
||
default:
|
||
fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
|
||
break;
|
||
}
|
||
} else {
|
||
if (c == '\\' || c == quoter)
|
||
fputs_filtered ("\\", stream);
|
||
fprintf_filtered (stream, "%c", c);
|
||
}
|
||
}
|
||
|
||
/* 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)
|
||
{
|
||
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. */
|
||
}
|
||
|
||
/* Reinitialize filter; ie. tell it to reset to original values. */
|
||
|
||
void
|
||
reinitialize_more_filter ()
|
||
{
|
||
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(indent)
|
||
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 ()
|
||
{
|
||
if (chars_printed > 0)
|
||
{
|
||
puts_filtered ("\n");
|
||
}
|
||
}
|
||
|
||
|
||
GDB_FILE *
|
||
gdb_fopen (name, mode)
|
||
char * name;
|
||
char * mode;
|
||
{
|
||
return fopen (name, mode);
|
||
}
|
||
|
||
void
|
||
gdb_flush (stream)
|
||
FILE *stream;
|
||
{
|
||
if (flush_hook)
|
||
{
|
||
flush_hook (stream);
|
||
return;
|
||
}
|
||
|
||
fflush (stream);
|
||
}
|
||
|
||
/* 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;
|
||
{
|
||
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++;
|
||
}
|
||
}
|
||
}
|
||
|
||
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];
|
||
|
||
buf[0] = c;
|
||
buf[1] = 0;
|
||
fputs_unfiltered (buf, gdb_stdout);
|
||
return c;
|
||
}
|
||
|
||
int
|
||
fputc_unfiltered (c, stream)
|
||
int c;
|
||
FILE * stream;
|
||
{
|
||
char buf[2];
|
||
|
||
buf[0] = c;
|
||
buf[1] = 0;
|
||
fputs_unfiltered (buf, stream);
|
||
return c;
|
||
}
|
||
|
||
|
||
/* 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 (stream, format, args, filter)
|
||
FILE *stream;
|
||
char *format;
|
||
va_list args;
|
||
int filter;
|
||
{
|
||
char *linebuffer;
|
||
struct cleanup *old_cleanups;
|
||
|
||
vasprintf (&linebuffer, format, args);
|
||
if (linebuffer == NULL)
|
||
{
|
||
fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr);
|
||
exit (1);
|
||
}
|
||
old_cleanups = make_cleanup (free, linebuffer);
|
||
fputs_maybe_filtered (linebuffer, stream, filter);
|
||
do_cleanups (old_cleanups);
|
||
}
|
||
|
||
|
||
void
|
||
vfprintf_filtered (stream, format, args)
|
||
FILE *stream;
|
||
char *format;
|
||
va_list args;
|
||
{
|
||
vfprintf_maybe_filtered (stream, format, args, 1);
|
||
}
|
||
|
||
void
|
||
vfprintf_unfiltered (stream, format, args)
|
||
FILE *stream;
|
||
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)
|
||
char *format;
|
||
va_list args;
|
||
{
|
||
vfprintf_maybe_filtered (gdb_stdout, format, args, 1);
|
||
}
|
||
|
||
void
|
||
vprintf_unfiltered (format, args)
|
||
char *format;
|
||
va_list args;
|
||
{
|
||
vfprintf_unfiltered (gdb_stdout, format, args);
|
||
}
|
||
|
||
/* VARARGS */
|
||
void
|
||
fprintf_filtered (va_alist)
|
||
va_dcl
|
||
{
|
||
va_list args;
|
||
FILE *stream;
|
||
char *format;
|
||
|
||
va_start (args);
|
||
stream = va_arg (args, FILE *);
|
||
format = va_arg (args, char *);
|
||
|
||
vfprintf_filtered (stream, format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
/* VARARGS */
|
||
void
|
||
fprintf_unfiltered (va_alist)
|
||
va_dcl
|
||
{
|
||
va_list args;
|
||
FILE *stream;
|
||
char *format;
|
||
|
||
va_start (args);
|
||
stream = va_arg (args, FILE *);
|
||
format = va_arg (args, char *);
|
||
|
||
vfprintf_unfiltered (stream, format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
/* Like fprintf_filtered, but prints its result indented.
|
||
Called as fprintfi_filtered (spaces, stream, format, ...); */
|
||
|
||
/* VARARGS */
|
||
void
|
||
fprintfi_filtered (va_alist)
|
||
va_dcl
|
||
{
|
||
va_list args;
|
||
int spaces;
|
||
FILE *stream;
|
||
char *format;
|
||
|
||
va_start (args);
|
||
spaces = va_arg (args, int);
|
||
stream = va_arg (args, FILE *);
|
||
format = va_arg (args, char *);
|
||
print_spaces_filtered (spaces, stream);
|
||
|
||
vfprintf_filtered (stream, format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
|
||
/* VARARGS */
|
||
void
|
||
printf_filtered (va_alist)
|
||
va_dcl
|
||
{
|
||
va_list args;
|
||
char *format;
|
||
|
||
va_start (args);
|
||
format = va_arg (args, char *);
|
||
|
||
vfprintf_filtered (gdb_stdout, format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
|
||
/* VARARGS */
|
||
void
|
||
printf_unfiltered (va_alist)
|
||
va_dcl
|
||
{
|
||
va_list args;
|
||
char *format;
|
||
|
||
va_start (args);
|
||
format = va_arg (args, char *);
|
||
|
||
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
|
||
printfi_filtered (va_alist)
|
||
va_dcl
|
||
{
|
||
va_list args;
|
||
int spaces;
|
||
char *format;
|
||
|
||
va_start (args);
|
||
spaces = va_arg (args, int);
|
||
format = va_arg (args, char *);
|
||
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)
|
||
char *string;
|
||
{
|
||
fputs_filtered (string, gdb_stdout);
|
||
}
|
||
|
||
void
|
||
puts_unfiltered (string)
|
||
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);
|
||
}
|
||
|
||
/* 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_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');
|
||
}
|
||
|
||
|
||
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__) || defined(WIN32)
|
||
lines_per_page = ScreenRows();
|
||
chars_per_line = ScreenCols();
|
||
#else
|
||
lines_per_page = 24;
|
||
chars_per_line = 80;
|
||
|
||
#ifndef MPW
|
||
/* 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
|
||
#endif
|
||
/* 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
|
||
|