mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-12-05 19:07:07 +00:00
2e4964adfc
* defs.h (demangle_and_match): Remove prototype. * dwarfread.c (STREQ, STREQN): Remove macros, replaced with STREQ and STREQN defined in defs.h. * dwarfread.c (set_cu_language): For completely unknown languages, try to deduce the language from the filename. Retain behavior that for known languages we don't know how to handle, we use language_unknown. * dwarfread.c (enum_type, symthesize_typedef): Initialize language and demangled name fields in symbol. * dwarfread.c, mipsread.c, partial-stab.h: For all usages of ADD_PSYMBOL_TO_LIST, add language and objfile parameters. * dwarfread.c (new_symbol): Attempt to demangle C++ symbol names and cache the results in SYMBOL_DEMANGLED_NAME for the symbol. * elfread.c (STREQ): Remove macro, use STREQ defined in defs.h. Replace usages throughout. * elfread.c (demangle.h): Include. * elfread.c (record_minimal_symbol): Remove prototype and function. * gdbtypes.h, symtab.h (B_SET, B_CLR, B_TST, B_TYPE, B_BYTES, B_CLRALL): Moved from symtab.h to gdbtypes.h. * infcmd.c (jump_command): Remove code to demangle name and add it to a cleanup list. Now just use SYMBOL_DEMANGLED_NAME. * minsyms.c (demangle.h): Include. * minsyms.c (lookup_minimal_symbol): Indent comment to match code. * minsyms.c (install_minimal_symbols): Attempt to demangle symbol names as C++ names, and cache them in SYMBOL_DEMANGLED_NAME. * mipsread.c (psymtab_language): Add static variable. * stabsread.c (demangle.h): Include. * stabsread.c (define_symbol): Attempt to demangle C++ symbol names and cache them in the SYMBOL_DEMANGLED_NAME field. * stack.c (return_command): Remove explicit demangling of name and use of cleanups. Just use SYMBOL_DEMANGLED_NAME. * symfile.c (demangle.h): Include. * symfile.c (add_psymbol_to_list, add_psymbol_addr_to_list): Fix to match macros in symfile.h and allow them to be compiled if INLINE_ADD_PSYMBOL is not true. * symfile.h (INLINE_ADD_PSYMBOL): Default to true if not set. * symfile.h (ADD_PSYMBOL_*): Add language and objfile parameters. Add code to demangle and cache C++ symbol names. Use macro form if INLINE_ADD_PSYMBOL is true, otherwise use C function form. * symmisc.c (add_psymbol_to_list, add_psymbol_addr_to_list): Remove, also defined in symfile.c, which we already fixed. * symtab.c (expensive_mangler): Remove prototype and function. * symtab.c (find_methods): Remove physnames parameter and fix prototype to match. * symtab.c (completion_list_add_symbol): Name changed to completion_list_add_name. * symtab.c (COMPLETION_LIST_ADD_SYMBOL): New macro, adds both the normal symbol name and the cached C++ demangled name. * symtab.c (lookup_demangled_partial_symbol, lookup_demangled_block_symbol): Remove prototypes and functions. * symtab.c (lookup_symbol): Remove use of expensive_mangler, use lookup_block_symbol instead of lookup_demangled_block_symbol. Remove code to try demangling names and matching them. * symtab.c (lookup_partial_symbol, lookup_block_symbol): Fix to try matching the cached demangled name if no match is found using the regular symbol name. * symtab.c (find_methods): Remove unused physnames array. * symtab.c (name_match, NAME_MATCH): Remove function and macro, replaced with SYMBOL_MATCHES_REGEXP from symtab.h. * symtab.c (completion_list_add_symbol): Rewrite to use cached C++ demangled symbol names. * symtab.h: Much reformatting of structures and such to add whitespace to make them more readable, and make them more consistent with other gdb structure definitions. * symtab.h (general_symbol_info): New struct containing fields common to all symbols. * symtab.h (SYMBOL_LANGUAGE, SYMBOL_DEMANGLED_NAME, SYMBOL_SOURCE_NAME, SYMBOL_LINKAGE_NAME, SYMBOL_MATCHES_NAME, SYMBOL_MATCHES_REGEXP, MSYMBOL_INFO, MSYMBOL_TYPE): New macros. * symtab. (struct minimal_symbol, struct partial_symbol, struct symbol): Use general_symbol_info struct. * utils.c (demangle_and_match): Remove, no longer used. * valops.c (demangle.h): Include. * xcoffexec.c (eq): Remove macro, replace usages with STREQ. * blockframe.c, breakpoint.c, c-exp.y, c-valprint.c, dbxread.c, infcmd.c, m2-exp.y, minsyms.c, objfiles.h, solib.c, stack.c, symmisc.c, symtab.c, valops.c: Replace references to minimal symbol fields with appropriate macros. * breakpoint.c, buildsym.c, c-exp.y, c-typeprint.c, c-valprint.c, coffread.c, command.c, convex-tdep.c, cp-valprint.c, dbxread.c, demangle.c, elfread.c, energize.c, environ.c, exec.c, gdbtypes.c, i960-tdep.c, infrun.c, infrun-hacked.c, language.c, main.c, minsyms.c, mipsread.c, partial-stab.h, remote-es1800.c, remote-nindy.c, remote-udi.c, rs6000-tdep.c, solib.c, source.c, sparc-pinsn.c, stabsread.c, standalone.c, state.c, stuff.c, symfile.c, symmisc.c, symtab.c, symtab.h, tm-sysv4.h, tm-ultra3.h, values.c, xcoffexec.c, xcoffread.c: Replace strcmp and strncmp usages with STREQ, STREQN, or STRCMP as appropriate. * breakpoint.c, buildsym.c, c-typeprint.c, expprint.c, findvar.c, mipsread.c, printcmd.c, source.c, stabsread.c, stack.c, symmisc.c, tm-29k.h, valops.c, values.c: Replace SYMBOL_NAME references with SYMBOL_SOURCE_NAME or SYMBOL_LINKAGE_NAME as appropriate. * buildsym.c (start_subfile, patch_subfile_names): Default the source language to what can be deduced from the filename. * buildsym.c (end_symtab): Update the source language in the allocated symtab to match what we have been using. * buildsym.h (struct subfile): Add a language field. * c-typeprint.c (c_print_type): Remove code to do explicit demangling. * dbxread.c (psymtab_language): Add static variable. * dbxread.c (start_psymtab): Initialize psymtab_language using deduce_language_from_filename.
1537 lines
36 KiB
C
1537 lines
36 KiB
C
/* General utility routines for GDB, the GNU debugger.
|
||
Copyright 1986, 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
|
||
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This file is part of GDB.
|
||
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||
This program is free software; you can redistribute it and/or modify
|
||
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. */
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||
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#include "defs.h"
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#if !defined(__GO32__)
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#include <sys/ioctl.h>
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#include <sys/param.h>
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#include <pwd.h>
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#endif
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#include <varargs.h>
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#include <ctype.h>
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#include <string.h>
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||
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#include "signals.h"
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#include "gdbcmd.h"
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#include "terminal.h"
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#include "bfd.h"
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#include "target.h"
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#include "demangle.h"
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/* Prototypes for local functions */
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||
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||
#if !defined (NO_MALLOC_CHECK)
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static void
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malloc_botch PARAMS ((void));
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#endif /* NO_MALLOC_CHECK */
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static void
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fatal_dump_core (); /* Can't prototype with <varargs.h> usage... */
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static void
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prompt_for_continue PARAMS ((void));
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static void
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set_width_command PARAMS ((char *, int, struct cmd_list_element *));
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/* If this definition isn't overridden by the header files, assume
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that isatty and fileno exist on this system. */
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#ifndef ISATTY
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#define ISATTY(FP) (isatty (fileno (FP)))
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#endif
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/* Chain of cleanup actions established with make_cleanup,
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to be executed if an error happens. */
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||
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static struct cleanup *cleanup_chain;
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/* Nonzero means a quit has been requested. */
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int quit_flag;
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/* Nonzero means quit immediately if Control-C is typed now,
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rather than waiting until QUIT is executed. */
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||
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int immediate_quit;
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||
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/* Nonzero means that encoded C++ names should be printed out in their
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C++ form rather than raw. */
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||
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int demangle = 1;
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/* Nonzero means that encoded C++ names should be printed out in their
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C++ form even in assembler language displays. If this is set, but
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DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
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int asm_demangle = 0;
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/* Nonzero means that strings with character values >0x7F should be printed
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as octal escapes. Zero means just print the value (e.g. it's an
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international character, and the terminal or window can cope.) */
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||
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int sevenbit_strings = 0;
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||
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/* String to be printed before error messages, if any. */
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char *error_pre_print;
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char *warning_pre_print = "\nwarning: ";
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|
||
/* Add a new cleanup to the cleanup_chain,
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and return the previous chain pointer
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||
to be passed later to do_cleanups or discard_cleanups.
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Args are FUNCTION to clean up with, and ARG to pass to it. */
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struct cleanup *
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make_cleanup (function, arg)
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void (*function) PARAMS ((PTR));
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PTR arg;
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{
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register struct cleanup *new
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= (struct cleanup *) xmalloc (sizeof (struct cleanup));
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register struct cleanup *old_chain = cleanup_chain;
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|
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new->next = cleanup_chain;
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new->function = function;
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new->arg = arg;
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cleanup_chain = new;
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||
|
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return old_chain;
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}
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|
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/* Discard cleanups and do the actions they describe
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until we get back to the point OLD_CHAIN in the cleanup_chain. */
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|
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void
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do_cleanups (old_chain)
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register struct cleanup *old_chain;
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{
|
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register struct cleanup *ptr;
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while ((ptr = cleanup_chain) != old_chain)
|
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{
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cleanup_chain = ptr->next; /* Do this first incase recursion */
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(*ptr->function) (ptr->arg);
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free (ptr);
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}
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}
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|
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/* Discard cleanups, not doing the actions they describe,
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until we get back to the point OLD_CHAIN in the cleanup_chain. */
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void
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discard_cleanups (old_chain)
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register struct cleanup *old_chain;
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{
|
||
register struct cleanup *ptr;
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||
while ((ptr = cleanup_chain) != old_chain)
|
||
{
|
||
cleanup_chain = ptr->next;
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||
free ((PTR)ptr);
|
||
}
|
||
}
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||
|
||
/* Set the cleanup_chain to 0, and return the old cleanup chain. */
|
||
struct cleanup *
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||
save_cleanups ()
|
||
{
|
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struct cleanup *old_chain = cleanup_chain;
|
||
|
||
cleanup_chain = 0;
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return old_chain;
|
||
}
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||
|
||
/* Restore the cleanup chain from a previously saved chain. */
|
||
void
|
||
restore_cleanups (chain)
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||
struct cleanup *chain;
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||
{
|
||
cleanup_chain = chain;
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||
}
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||
|
||
/* This function is useful for cleanups.
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||
Do
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||
|
||
foo = xmalloc (...);
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||
old_chain = make_cleanup (free_current_contents, &foo);
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||
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to arrange to free the object thus allocated. */
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||
|
||
void
|
||
free_current_contents (location)
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||
char **location;
|
||
{
|
||
free (*location);
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||
}
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||
|
||
/* 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
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||
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().
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||
In such cases, we may not be certain where the first cleanup is, unless
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we have a do-nothing one to always use as the base. */
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/* ARGSUSED */
|
||
void
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||
null_cleanup (arg)
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||
char **arg;
|
||
{
|
||
}
|
||
|
||
|
||
/* Provide a hook for modules wishing to print their own warning messages
|
||
to set up the terminal state in a compatible way, without them having
|
||
to import all the target_<...> macros. */
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||
|
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void
|
||
warning_setup ()
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||
{
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target_terminal_ours ();
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wrap_here(""); /* Force out any buffered output */
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||
fflush (stdout);
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||
}
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||
|
||
/* 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
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||
does not force the return to command level. */
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/* VARARGS */
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void
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warning (va_alist)
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va_dcl
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{
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va_list args;
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char *string;
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va_start (args);
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target_terminal_ours ();
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wrap_here(""); /* Force out any buffered output */
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fflush (stdout);
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if (warning_pre_print)
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fprintf (stderr, warning_pre_print);
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string = va_arg (args, char *);
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vfprintf (stderr, string, args);
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fprintf (stderr, "\n");
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va_end (args);
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}
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/* Print an error message and return to command level.
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The first argument STRING is the error message, used as a fprintf string,
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and the remaining args are passed as arguments to it. */
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/* VARARGS */
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NORETURN void
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error (va_alist)
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va_dcl
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{
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va_list args;
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char *string;
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||
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va_start (args);
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target_terminal_ours ();
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wrap_here(""); /* Force out any buffered output */
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fflush (stdout);
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if (error_pre_print)
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fprintf_filtered (stderr, error_pre_print);
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string = va_arg (args, char *);
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vfprintf_filtered (stderr, string, args);
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fprintf_filtered (stderr, "\n");
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va_end (args);
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return_to_top_level ();
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||
}
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/* Print an error message and exit reporting failure.
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This is for a error that we cannot continue from.
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The arguments are printed a la printf.
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This function cannot be declared volatile (NORETURN) in an
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ANSI environment because exit() is not declared volatile. */
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/* VARARGS */
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NORETURN void
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fatal (va_alist)
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va_dcl
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{
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||
va_list args;
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char *string;
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va_start (args);
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||
string = va_arg (args, char *);
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fprintf (stderr, "\ngdb: ");
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vfprintf (stderr, string, args);
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fprintf (stderr, "\n");
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va_end (args);
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exit (1);
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||
}
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|
||
/* Print an error message and exit, dumping core.
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||
The arguments are printed a la printf (). */
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||
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/* VARARGS */
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||
static void
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fatal_dump_core (va_alist)
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||
va_dcl
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||
{
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||
va_list args;
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||
char *string;
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||
|
||
va_start (args);
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||
string = va_arg (args, char *);
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||
/* "internal error" is always correct, since GDB should never dump
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||
core, no matter what the input. */
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fprintf (stderr, "\ngdb internal error: ");
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||
vfprintf (stderr, string, args);
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fprintf (stderr, "\n");
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||
va_end (args);
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signal (SIGQUIT, SIG_DFL);
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||
kill (getpid (), SIGQUIT);
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||
/* We should never get here, but just in case... */
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||
exit (1);
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||
}
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||
/* The strerror() function can return NULL for errno values that are
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||
out of range. Provide a "safe" version that always returns a
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printable string. */
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||
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||
char *
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safe_strerror (errnum)
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||
int errnum;
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||
{
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char *msg;
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||
static char buf[32];
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||
|
||
if ((msg = strerror (errnum)) == NULL)
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{
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sprintf (buf, "(undocumented errno %d)", errnum);
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msg = buf;
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||
}
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return (msg);
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||
}
|
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|
||
/* The strsignal() function can return NULL for signal values that are
|
||
out of range. Provide a "safe" version that always returns a
|
||
printable string. */
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||
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||
char *
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safe_strsignal (signo)
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int signo;
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{
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char *msg;
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static char buf[32];
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||
|
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if ((msg = strsignal (signo)) == NULL)
|
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{
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sprintf (buf, "(undocumented signal %d)", signo);
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msg = buf;
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}
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return (msg);
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}
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||
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/* Print the system error message for errno, and also mention STRING
|
||
as the file name for which the error was encountered.
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Then return to command level. */
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void
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perror_with_name (string)
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char *string;
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{
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char *err;
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char *combined;
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err = safe_strerror (errno);
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combined = (char *) alloca (strlen (err) + strlen (string) + 3);
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strcpy (combined, string);
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strcat (combined, ": ");
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strcat (combined, err);
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|
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/* I understand setting these is a matter of taste. Still, some people
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||
may clear errno but not know about bfd_error. Doing this here is not
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unreasonable. */
|
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bfd_error = no_error;
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errno = 0;
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error ("%s.", combined);
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}
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|
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/* Print the system error message for ERRCODE, and also mention STRING
|
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as the file name for which the error was encountered. */
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|
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void
|
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print_sys_errmsg (string, errcode)
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char *string;
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int errcode;
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{
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char *err;
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char *combined;
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||
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err = safe_strerror (errcode);
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combined = (char *) alloca (strlen (err) + strlen (string) + 3);
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strcpy (combined, string);
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strcat (combined, ": ");
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||
strcat (combined, err);
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fprintf (stderr, "%s.\n", combined);
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}
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|
||
/* Control C eventually causes this to be called, at a convenient time. */
|
||
|
||
void
|
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quit ()
|
||
{
|
||
target_terminal_ours ();
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wrap_here ((char *)0); /* Force out any pending output */
|
||
#if !defined(__GO32__)
|
||
#ifdef HAVE_TERMIO
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ioctl (fileno (stdout), TCFLSH, 1);
|
||
#else /* not HAVE_TERMIO */
|
||
ioctl (fileno (stdout), TIOCFLUSH, 0);
|
||
#endif /* not HAVE_TERMIO */
|
||
#ifdef TIOCGPGRP
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||
error ("Quit");
|
||
#else
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||
error ("Quit (expect signal %d when inferior is resumed)", SIGINT);
|
||
#endif /* TIOCGPGRP */
|
||
#endif
|
||
}
|
||
|
||
/* Control C comes here */
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||
|
||
void
|
||
request_quit (signo)
|
||
int signo;
|
||
{
|
||
quit_flag = 1;
|
||
|
||
#ifdef USG
|
||
/* Restore the signal handler. */
|
||
signal (signo, request_quit);
|
||
#endif
|
||
|
||
if (immediate_quit)
|
||
quit ();
|
||
}
|
||
|
||
|
||
/* Memory management stuff (malloc friends). */
|
||
|
||
#if defined (NO_MMALLOC)
|
||
|
||
PTR
|
||
mmalloc (md, size)
|
||
PTR md;
|
||
long size;
|
||
{
|
||
return (malloc (size));
|
||
}
|
||
|
||
PTR
|
||
mrealloc (md, ptr, size)
|
||
PTR md;
|
||
PTR ptr;
|
||
long 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 ((void *) NULL, size));
|
||
}
|
||
|
||
/* Like mrealloc but get error if no storage available. */
|
||
|
||
PTR
|
||
xrealloc (ptr, size)
|
||
PTR ptr;
|
||
long size;
|
||
{
|
||
return (xmrealloc ((void *) 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)
|
||
void *md;
|
||
const char *ptr;
|
||
int size;
|
||
{
|
||
register char *p = (char *) xmmalloc (md, size + 1);
|
||
memcpy (p, ptr, size);
|
||
p[size] = 0;
|
||
return p;
|
||
}
|
||
|
||
/* The "const" is so it compiles under DGUX (which prototypes strsave
|
||
in <string.h>. FIXME: This should be named "xstrsave", shouldn't it?
|
||
Doesn't real strsave return NULL if out of memory? */
|
||
char *
|
||
strsave (ptr)
|
||
const char *ptr;
|
||
{
|
||
return savestring (ptr, strlen (ptr));
|
||
}
|
||
|
||
char *
|
||
mstrsave (md, ptr)
|
||
void *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);
|
||
}
|
||
|
||
/* 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;
|
||
|
||
/* Automatically answer "yes" if input is not from a terminal. */
|
||
if (!input_from_terminal_p ())
|
||
return 1;
|
||
|
||
while (1)
|
||
{
|
||
wrap_here (""); /* Flush any buffered output */
|
||
fflush (stdout);
|
||
va_start (args);
|
||
ctlstr = va_arg (args, char *);
|
||
vfprintf_filtered (stdout, ctlstr, args);
|
||
va_end (args);
|
||
printf_filtered ("(y or n) ");
|
||
fflush (stdout);
|
||
answer = fgetc (stdin);
|
||
clearerr (stdin); /* in case of C-d */
|
||
if (answer == EOF) /* C-d */
|
||
return 1;
|
||
if (answer != '\n') /* Eat rest of input line, to EOF or newline */
|
||
do
|
||
{
|
||
ans2 = fgetc (stdin);
|
||
clearerr (stdin);
|
||
}
|
||
while (ans2 != EOF && ans2 != '\n');
|
||
if (answer >= 'a')
|
||
answer -= 040;
|
||
if (answer == 'Y')
|
||
return 1;
|
||
if (answer == 'N')
|
||
return 0;
|
||
printf_filtered ("Please answer y or n.\n");
|
||
}
|
||
}
|
||
|
||
|
||
/* 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.
|
||
|
||
wrap_column is the column number on the screen where wrap_buffer begins.
|
||
When wrap_column is zero, wrapping is not in effect.
|
||
wrap_buffer is malloc'd with chars_per_line+2 bytes.
|
||
When wrap_buffer[0] is null, the buffer is empty.
|
||
wrap_pointer points into it at the next character to fill.
|
||
wrap_indent is the string that should be used as indentation if the
|
||
wrap occurs. */
|
||
|
||
static char *wrap_buffer, *wrap_pointer, *wrap_indent;
|
||
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;
|
||
|
||
/* 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++;
|
||
ignore = gdb_readline ("---Type <return> to continue---");
|
||
if (ignore)
|
||
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 nonzero, 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. */
|
||
|
||
void
|
||
wrap_here(indent)
|
||
char *indent;
|
||
{
|
||
if (wrap_buffer[0])
|
||
{
|
||
*wrap_pointer = '\0';
|
||
fputs (wrap_buffer, 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");
|
||
puts_filtered (indent);
|
||
wrap_column = 0;
|
||
}
|
||
else
|
||
{
|
||
wrap_column = chars_printed;
|
||
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");
|
||
}
|
||
}
|
||
|
||
/* Like fputs but pause after every screenful, and can wrap at points
|
||
other than the final character of a line.
|
||
Unlike fputs, fputs_filtered does not return a value.
|
||
It is OK for LINEBUFFER to be NULL, in which case just don't print
|
||
anything.
|
||
|
||
Note that a longjmp to top level may occur in this routine
|
||
(since prompt_for_continue may do so) so this routine should not be
|
||
called when cleanups are not in place. */
|
||
|
||
void
|
||
fputs_filtered (linebuffer, stream)
|
||
const char *linebuffer;
|
||
FILE *stream;
|
||
{
|
||
const char *lineptr;
|
||
|
||
if (linebuffer == 0)
|
||
return;
|
||
|
||
/* Don't do any filtering if it is disabled. */
|
||
if (stream != stdout
|
||
|| (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX))
|
||
{
|
||
fputs (linebuffer, stream);
|
||
return;
|
||
}
|
||
|
||
/* Go through and output each character. Show line extension
|
||
when this is necessary; prompt user for new page when this is
|
||
necessary. */
|
||
|
||
lineptr = linebuffer;
|
||
while (*lineptr)
|
||
{
|
||
/* Possible new page. */
|
||
if (lines_printed >= lines_per_page - 1)
|
||
prompt_for_continue ();
|
||
|
||
while (*lineptr && *lineptr != '\n')
|
||
{
|
||
/* Print a single line. */
|
||
if (*lineptr == '\t')
|
||
{
|
||
if (wrap_column)
|
||
*wrap_pointer++ = '\t';
|
||
else
|
||
putc ('\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
|
||
putc (*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)
|
||
putc ('\n', stream);
|
||
|
||
/* Possible new page. */
|
||
if (lines_printed >= lines_per_page - 1)
|
||
prompt_for_continue ();
|
||
|
||
/* Now output indentation and wrapped string */
|
||
if (wrap_column)
|
||
{
|
||
if (wrap_indent)
|
||
fputs (wrap_indent, stream);
|
||
*wrap_pointer = '\0'; /* Null-terminate saved stuff */
|
||
fputs (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++;
|
||
putc ('\n', stream);
|
||
lineptr++;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
/* fputs_demangled is a variant of fputs_filtered that
|
||
demangles g++ names.*/
|
||
|
||
void
|
||
fputs_demangled (linebuffer, stream, arg_mode)
|
||
char *linebuffer;
|
||
FILE *stream;
|
||
int arg_mode;
|
||
{
|
||
#define SYMBOL_MAX 1024
|
||
|
||
#define SYMBOL_CHAR(c) (isascii(c) \
|
||
&& (isalnum(c) || (c) == '_' || (c) == CPLUS_MARKER))
|
||
|
||
char buf[SYMBOL_MAX+1];
|
||
# define DMSLOP 5 /* How much room to leave in buf */
|
||
char *p;
|
||
|
||
if (linebuffer == NULL)
|
||
return;
|
||
|
||
/* If user wants to see raw output, no problem. */
|
||
if (!demangle) {
|
||
fputs_filtered (linebuffer, stream);
|
||
return;
|
||
}
|
||
|
||
p = linebuffer;
|
||
|
||
while ( *p != (char) 0 ) {
|
||
int i = 0;
|
||
|
||
/* collect non-interesting characters into buf */
|
||
while (*p != (char) 0 && !SYMBOL_CHAR(*p) && i < (int)sizeof(buf)-DMSLOP ) {
|
||
buf[i++] = *p;
|
||
p++;
|
||
}
|
||
if (i > 0) {
|
||
/* output the non-interesting characters without demangling */
|
||
buf[i] = (char) 0;
|
||
fputs_filtered(buf, stream);
|
||
i = 0; /* reset buf */
|
||
}
|
||
|
||
/* and now the interesting characters */
|
||
while (i < SYMBOL_MAX
|
||
&& *p != (char) 0
|
||
&& SYMBOL_CHAR(*p)
|
||
&& i < (int)sizeof(buf) - DMSLOP) {
|
||
buf[i++] = *p;
|
||
p++;
|
||
}
|
||
buf[i] = (char) 0;
|
||
if (i > 0) {
|
||
char * result;
|
||
|
||
if ( (result = cplus_demangle(buf, arg_mode)) != NULL ) {
|
||
fputs_filtered(result, stream);
|
||
free(result);
|
||
}
|
||
else {
|
||
fputs_filtered(buf, stream);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Print a variable number of ARGS using format FORMAT. If this
|
||
information is going to put the amount written (since the last call
|
||
to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
|
||
print out a pause message and do a gdb_readline to get the users
|
||
permision to continue.
|
||
|
||
Unlike fprintf, this function does not return a value.
|
||
|
||
We implement three variants, vfprintf (takes a vararg list and stream),
|
||
fprintf (takes a stream to write on), and printf (the usual).
|
||
|
||
Note that this routine has a restriction that the length of the
|
||
final output line must be less than 255 characters *or* it must be
|
||
less than twice the size of the format string. This is a very
|
||
arbitrary restriction, but it is an internal restriction, so I'll
|
||
put it in. This means that the %s format specifier is almost
|
||
useless; unless the caller can GUARANTEE that the string is short
|
||
enough, fputs_filtered should be used instead.
|
||
|
||
Note also that a longjmp to top level may occur in this routine
|
||
(since prompt_for_continue may do so) so this routine should not be
|
||
called when cleanups are not in place. */
|
||
|
||
#define MIN_LINEBUF 255
|
||
|
||
void
|
||
vfprintf_filtered (stream, format, args)
|
||
FILE *stream;
|
||
char *format;
|
||
va_list args;
|
||
{
|
||
char line_buf[MIN_LINEBUF+10];
|
||
char *linebuffer = line_buf;
|
||
int format_length;
|
||
|
||
format_length = strlen (format);
|
||
|
||
/* Reallocate buffer to a larger size if this is necessary. */
|
||
if (format_length * 2 > MIN_LINEBUF)
|
||
{
|
||
linebuffer = alloca (10 + format_length * 2);
|
||
}
|
||
|
||
/* This won't blow up if the restrictions described above are
|
||
followed. */
|
||
vsprintf (linebuffer, format, args);
|
||
|
||
fputs_filtered (linebuffer, stream);
|
||
}
|
||
|
||
void
|
||
vprintf_filtered (format, args)
|
||
char *format;
|
||
va_list args;
|
||
{
|
||
vfprintf_filtered (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 *);
|
||
|
||
/* This won't blow up if the restrictions described above are
|
||
followed. */
|
||
vfprintf_filtered (stream, format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
/* Like fprintf_filtered, but prints it's result indent.
|
||
Called as fprintfi_filtered (spaces, format, arg1, arg2, ...); */
|
||
|
||
/* 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);
|
||
|
||
/* This won't blow up if the restrictions described above are
|
||
followed. */
|
||
vfprintf_filtered (stream, format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
/* VARARGS */
|
||
void
|
||
printf_filtered (va_alist)
|
||
va_dcl
|
||
{
|
||
va_list args;
|
||
char *format;
|
||
|
||
va_start (args);
|
||
format = va_arg (args, char *);
|
||
|
||
vfprintf_filtered (stdout, format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
/* Like printf_filtered, but prints it's result indented.
|
||
Called as printfi_filtered (spaces, format, arg1, arg2, ...); */
|
||
|
||
/* 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, stdout);
|
||
vfprintf_filtered (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, 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. */
|
||
|
||
/* Make a copy of a symbol, applying C++ demangling if demangling is enabled
|
||
and a demangled version exists. Note that the value returned from
|
||
cplus_demangle is already allocated in malloc'd memory. */
|
||
|
||
char *
|
||
strdup_demangled (name)
|
||
const char *name;
|
||
{
|
||
char *demangled = NULL;
|
||
|
||
if (demangle)
|
||
{
|
||
demangled = cplus_demangle (name, DMGL_PARAMS | DMGL_ANSI);
|
||
}
|
||
return ((demangled != NULL) ? demangled : strdup (name));
|
||
}
|
||
|
||
|
||
/* Print NAME on STREAM, demangling if necessary. */
|
||
void
|
||
fprint_symbol (stream, name)
|
||
FILE *stream;
|
||
char *name;
|
||
{
|
||
char *demangled;
|
||
if ((!demangle)
|
||
|| NULL == (demangled = cplus_demangle (name, DMGL_PARAMS | DMGL_ANSI)))
|
||
fputs_filtered (name, stream);
|
||
else
|
||
{
|
||
fputs_filtered (demangled, stream);
|
||
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__)
|
||
lines_per_page = ScreenRows();
|
||
chars_per_line = ScreenCols();
|
||
#else
|
||
lines_per_page = 24;
|
||
chars_per_line = 80;
|
||
/* Initialize the screen height and width from termcap. */
|
||
{
|
||
char *termtype = getenv ("TERM");
|
||
|
||
/* Positive means success, nonpositive means failure. */
|
||
int status;
|
||
|
||
/* 2048 is large enough for all known terminals, according to the
|
||
GNU termcap manual. */
|
||
char term_buffer[2048];
|
||
|
||
if (termtype)
|
||
{
|
||
status = tgetent (term_buffer, termtype);
|
||
if (status > 0)
|
||
{
|
||
int val;
|
||
|
||
val = tgetnum ("li");
|
||
if (val >= 0)
|
||
lines_per_page = val;
|
||
else
|
||
/* The number of lines per page is not mentioned
|
||
in the terminal description. This probably means
|
||
that paging is not useful (e.g. emacs shell window),
|
||
so disable paging. */
|
||
lines_per_page = UINT_MAX;
|
||
|
||
val = tgetnum ("co");
|
||
if (val >= 0)
|
||
chars_per_line = val;
|
||
}
|
||
}
|
||
}
|
||
|
||
#if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
|
||
|
||
/* If there is a better way to determine the window size, use it. */
|
||
SIGWINCH_HANDLER ();
|
||
#endif
|
||
#endif
|
||
/* If the output is not a terminal, don't paginate it. */
|
||
if (!ISATTY (stdout))
|
||
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
|