mirror of
https://github.com/darlinghq/darling-gdb.git
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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.
1336 lines
34 KiB
C
1336 lines
34 KiB
C
/* List lines of source files for GDB, the GNU debugger.
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Copyright (C) 1986, 1987, 1988, 1989, 1991 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "defs.h"
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#include "symtab.h"
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#include "expression.h"
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#include "language.h"
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#include "command.h"
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#include "gdbcmd.h"
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#include "frame.h"
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#ifdef USG
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#include <sys/types.h>
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#endif
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#include <string.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include "gdbcore.h"
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#include "regex.h"
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#include "symfile.h"
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#include "objfiles.h"
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/* Prototypes for local functions. */
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static int
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open_source_file PARAMS ((struct symtab *));
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static int
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get_filename_and_charpos PARAMS ((struct symtab *, char **));
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static void
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reverse_search_command PARAMS ((char *, int));
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static void
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forward_search_command PARAMS ((char *, int));
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static void
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line_info PARAMS ((char *, int));
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static void
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list_command PARAMS ((char *, int));
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static void
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ambiguous_line_spec PARAMS ((struct symtabs_and_lines *));
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static void
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source_info PARAMS ((char *, int));
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static void
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show_directories PARAMS ((char *, int));
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static void
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find_source_lines PARAMS ((struct symtab *, int));
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/* If we use this declaration, it breaks because of fucking ANSI "const" stuff
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on some systems. We just have to not declare it at all, have it default
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to int, and possibly botch on a few systems. Thanks, ANSIholes... */
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/* extern char *strstr(); */
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/* Path of directories to search for source files.
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Same format as the PATH environment variable's value. */
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char *source_path;
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/* Symtab of default file for listing lines of. */
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struct symtab *current_source_symtab;
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/* Default next line to list. */
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int current_source_line;
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/* Default number of lines to print with commands like "list".
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This is based on guessing how many long (i.e. more than chars_per_line
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characters) lines there will be. To be completely correct, "list"
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and friends should be rewritten to count characters and see where
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things are wrapping, but that would be a fair amount of work. */
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int lines_to_list = 10;
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/* Line number of last line printed. Default for various commands.
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current_source_line is usually, but not always, the same as this. */
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static int last_line_listed;
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/* First line number listed by last listing command. */
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static int first_line_listed;
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/* Set the source file default for the "list" command, specifying a
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symtab. Sigh. Behavior specification: If it is called with a
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non-zero argument, that is the symtab to select. If it is not,
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first lookup "main"; if it exists, use the symtab and line it
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defines. If not, take the last symtab in the symtab lists (if it
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exists) or the last symtab in the psymtab lists (if *it* exists). If
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none of this works, report an error. */
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void
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select_source_symtab (s)
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register struct symtab *s;
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{
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struct symtabs_and_lines sals;
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struct symtab_and_line sal;
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struct partial_symtab *ps;
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struct partial_symtab *cs_pst = 0;
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struct objfile *ofp;
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if (s)
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{
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current_source_symtab = s;
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current_source_line = 1;
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return;
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}
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/* Make the default place to list be the function `main'
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if one exists. */
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if (lookup_symbol ("main", 0, VAR_NAMESPACE, 0, NULL))
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{
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sals = decode_line_spec ("main", 1);
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sal = sals.sals[0];
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free (sals.sals);
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current_source_symtab = sal.symtab;
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current_source_line = max (sal.line - (lines_to_list - 1), 1);
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if (current_source_symtab)
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return;
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}
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/* All right; find the last file in the symtab list (ignoring .h's). */
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current_source_line = 1;
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for (ofp = object_files; ofp != NULL; ofp = ofp -> next)
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{
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for (s = ofp -> symtabs; s; s = s->next)
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{
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char *name = s -> filename;
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int len = strlen (name);
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if (! (len > 2 && (STREQ (&name[len - 2], ".h"))))
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{
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current_source_symtab = s;
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}
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}
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}
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if (current_source_symtab)
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return;
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/* Howabout the partial symbol tables? */
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for (ofp = object_files; ofp != NULL; ofp = ofp -> next)
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{
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for (ps = ofp -> psymtabs; ps != NULL; ps = ps -> next)
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{
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char *name = ps -> filename;
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int len = strlen (name);
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if (! (len > 2 && (STREQ (&name[len - 2], ".h"))))
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{
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cs_pst = ps;
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}
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}
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}
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if (cs_pst)
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{
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if (cs_pst -> readin)
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{
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fatal ("Internal: select_source_symtab: readin pst found and no symtabs.");
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}
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else
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{
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current_source_symtab = PSYMTAB_TO_SYMTAB (cs_pst);
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}
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}
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if (current_source_symtab)
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return;
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error ("Can't find a default source file");
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}
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static void
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show_directories (ignore, from_tty)
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char *ignore;
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int from_tty;
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{
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puts_filtered ("Source directories searched: ");
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puts_filtered (source_path);
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puts_filtered ("\n");
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}
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/* Forget what we learned about line positions in source files,
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and which directories contain them;
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must check again now since files may be found in
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a different directory now. */
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void
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forget_cached_source_info ()
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{
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register struct symtab *s;
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register struct objfile *objfile;
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for (objfile = object_files; objfile != NULL; objfile = objfile -> next)
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{
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for (s = objfile -> symtabs; s != NULL; s = s -> next)
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{
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if (s -> line_charpos != NULL)
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{
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mfree (objfile -> md, s -> line_charpos);
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s -> line_charpos = NULL;
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}
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if (s -> fullname != NULL)
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{
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mfree (objfile -> md, s -> fullname);
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s -> fullname = NULL;
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}
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}
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}
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}
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void
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init_source_path ()
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{
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source_path = savestring ("$cdir:$cwd", /* strlen of it */ 10);
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forget_cached_source_info ();
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}
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/* Add zero or more directories to the front of the source path. */
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void
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directory_command (dirname, from_tty)
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char *dirname;
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int from_tty;
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{
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dont_repeat ();
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/* FIXME, this goes to "delete dir"... */
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if (dirname == 0)
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{
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if (query ("Reinitialize source path to empty? ", ""))
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{
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free (source_path);
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init_source_path ();
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}
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}
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else
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mod_path (dirname, &source_path);
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if (from_tty)
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show_directories ((char *)0, from_tty);
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forget_cached_source_info ();
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}
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/* Add zero or more directories to the front of an arbitrary path. */
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void
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mod_path (dirname, which_path)
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char *dirname;
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char **which_path;
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{
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char *old = *which_path;
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int prefix = 0;
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if (dirname == 0)
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return;
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dirname = strsave (dirname);
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make_cleanup (free, dirname);
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do
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{
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char *name = dirname;
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register char *p;
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struct stat st;
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{
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char *colon = strchr (name, ':');
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char *space = strchr (name, ' ');
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char *tab = strchr (name, '\t');
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if (colon == 0 && space == 0 && tab == 0)
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p = dirname = name + strlen (name);
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else
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{
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p = 0;
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if (colon != 0 && (p == 0 || colon < p))
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p = colon;
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if (space != 0 && (p == 0 || space < p))
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p = space;
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if (tab != 0 && (p == 0 || tab < p))
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p = tab;
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dirname = p + 1;
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while (*dirname == ':' || *dirname == ' ' || *dirname == '\t')
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++dirname;
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}
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}
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if (p[-1] == '/')
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/* Sigh. "foo/" => "foo" */
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--p;
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*p = '\0';
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while (p[-1] == '.')
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{
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if (p - name == 1)
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{
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/* "." => getwd (). */
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name = current_directory;
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goto append;
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}
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else if (p[-2] == '/')
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{
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if (p - name == 2)
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{
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/* "/." => "/". */
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*--p = '\0';
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goto append;
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}
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else
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{
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/* "...foo/." => "...foo". */
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p -= 2;
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*p = '\0';
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continue;
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}
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}
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else
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break;
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}
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if (name[0] == '~')
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name = tilde_expand (name);
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else if (name[0] != '/' && name[0] != '$')
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name = concat (current_directory, "/", name, NULL);
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else
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name = savestring (name, p - name);
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make_cleanup (free, name);
|
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|
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/* Unless it's a variable, check existence. */
|
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if (name[0] != '$') {
|
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if (stat (name, &st) < 0)
|
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perror_with_name (name);
|
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if ((st.st_mode & S_IFMT) != S_IFDIR)
|
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error ("%s is not a directory.", name);
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}
|
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|
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append:
|
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{
|
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register unsigned int len = strlen (name);
|
||
|
||
p = *which_path;
|
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while (1)
|
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{
|
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if (!strncmp (p, name, len)
|
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&& (p[len] == '\0' || p[len] == ':'))
|
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{
|
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/* Found it in the search path, remove old copy */
|
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if (p > *which_path)
|
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p--; /* Back over leading colon */
|
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if (prefix > p - *which_path)
|
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goto skip_dup; /* Same dir twice in one cmd */
|
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strcpy (p, &p[len+1]); /* Copy from next \0 or : */
|
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}
|
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p = strchr (p, ':');
|
||
if (p != 0)
|
||
++p;
|
||
else
|
||
break;
|
||
}
|
||
if (p == 0)
|
||
{
|
||
/* If we have already tacked on a name(s) in this command, be sure they stay on the front as we tack on some more. */
|
||
if (prefix)
|
||
{
|
||
char *temp, c;
|
||
|
||
c = old[prefix];
|
||
old[prefix] = '\0';
|
||
temp = concat (old, ":", name, NULL);
|
||
old[prefix] = c;
|
||
*which_path = concat (temp, "", &old[prefix], NULL);
|
||
prefix = strlen (temp);
|
||
free (temp);
|
||
}
|
||
else
|
||
{
|
||
*which_path = concat (name, (old[0]? ":" : old), old, NULL);
|
||
prefix = strlen (name);
|
||
}
|
||
free (old);
|
||
old = *which_path;
|
||
}
|
||
}
|
||
skip_dup: ;
|
||
} while (*dirname != '\0');
|
||
}
|
||
|
||
|
||
static void
|
||
source_info (ignore, from_tty)
|
||
char *ignore;
|
||
int from_tty;
|
||
{
|
||
register struct symtab *s = current_source_symtab;
|
||
|
||
if (!s)
|
||
{
|
||
printf_filtered("No current source file.\n");
|
||
return;
|
||
}
|
||
printf_filtered ("Current source file is %s\n", s->filename);
|
||
if (s->dirname)
|
||
printf_filtered ("Compilation directory is %s\n", s->dirname);
|
||
if (s->fullname)
|
||
printf_filtered ("Located in %s\n", s->fullname);
|
||
if (s->nlines)
|
||
printf_filtered ("Contains %d line%s.\n", s->nlines,
|
||
s->nlines == 1 ? "" : "s");
|
||
|
||
printf_filtered("Source language is %s.\n", language_str (s->language));
|
||
}
|
||
|
||
|
||
|
||
/* Open a file named STRING, searching path PATH (dir names sep by colons)
|
||
using mode MODE and protection bits PROT in the calls to open.
|
||
If TRY_CWD_FIRST, try to open ./STRING before searching PATH.
|
||
(ie pretend the first element of PATH is ".")
|
||
If FILENAMED_OPENED is non-null, set it to a newly allocated string naming
|
||
the actual file opened (this string will always start with a "/". We
|
||
have to take special pains to avoid doubling the "/" between the directory
|
||
and the file, sigh! Emacs gets confuzzed by this when we print the
|
||
source file name!!!
|
||
|
||
If a file is found, return the descriptor.
|
||
Otherwise, return -1, with errno set for the last name we tried to open. */
|
||
|
||
/* >>>> This should only allow files of certain types,
|
||
>>>> eg executable, non-directory */
|
||
int
|
||
openp (path, try_cwd_first, string, mode, prot, filename_opened)
|
||
char *path;
|
||
int try_cwd_first;
|
||
char *string;
|
||
int mode;
|
||
int prot;
|
||
char **filename_opened;
|
||
{
|
||
register int fd;
|
||
register char *filename;
|
||
register char *p, *p1;
|
||
register int len;
|
||
int alloclen;
|
||
|
||
if (!path)
|
||
path = ".";
|
||
|
||
/* ./foo => foo */
|
||
while (string[0] == '.' && string[1] == '/')
|
||
string += 2;
|
||
|
||
if (try_cwd_first || string[0] == '/')
|
||
{
|
||
filename = string;
|
||
fd = open (filename, mode, prot);
|
||
if (fd >= 0 || string[0] == '/')
|
||
goto done;
|
||
}
|
||
|
||
alloclen = strlen (path) + strlen (string) + 2;
|
||
filename = (char *) alloca (alloclen);
|
||
fd = -1;
|
||
for (p = path; p; p = p1 ? p1 + 1 : 0)
|
||
{
|
||
p1 = (char *) strchr (p, ':');
|
||
if (p1)
|
||
len = p1 - p;
|
||
else
|
||
len = strlen (p);
|
||
|
||
if (len == 4 && p[0] == '$' && p[1] == 'c'
|
||
&& p[2] == 'w' && p[3] == 'd') {
|
||
/* Name is $cwd -- insert current directory name instead. */
|
||
int newlen;
|
||
|
||
/* First, realloc the filename buffer if too short. */
|
||
len = strlen (current_directory);
|
||
newlen = len + strlen (string) + 2;
|
||
if (newlen > alloclen) {
|
||
alloclen = newlen;
|
||
filename = (char *) alloca (alloclen);
|
||
}
|
||
strcpy (filename, current_directory);
|
||
} else {
|
||
/* Normal file name in path -- just use it. */
|
||
strncpy (filename, p, len);
|
||
filename[len] = 0;
|
||
}
|
||
|
||
/* Remove trailing slashes */
|
||
while (len > 0 && filename[len-1] == '/')
|
||
filename[--len] = 0;
|
||
|
||
strcat (filename+len, "/");
|
||
strcat (filename, string);
|
||
|
||
fd = open (filename, mode, prot);
|
||
if (fd >= 0) break;
|
||
}
|
||
|
||
done:
|
||
if (filename_opened)
|
||
if (fd < 0)
|
||
*filename_opened = (char *) 0;
|
||
else if (filename[0] == '/')
|
||
*filename_opened = savestring (filename, strlen (filename));
|
||
else
|
||
{
|
||
/* Beware the // my son, the Emacs barfs, the botch that catch... */
|
||
|
||
*filename_opened = concat (current_directory,
|
||
'/' == current_directory[strlen(current_directory)-1]? "": "/",
|
||
filename, NULL);
|
||
}
|
||
|
||
return fd;
|
||
}
|
||
|
||
/* Open a source file given a symtab S. Returns a file descriptor
|
||
or negative number for error. */
|
||
|
||
static int
|
||
open_source_file (s)
|
||
struct symtab *s;
|
||
{
|
||
char *path = source_path;
|
||
char *p;
|
||
int result;
|
||
char *fullname;
|
||
|
||
/* Quick way out if we already know its full name */
|
||
if (s->fullname)
|
||
{
|
||
result = open (s->fullname, O_RDONLY);
|
||
if (result >= 0)
|
||
return result;
|
||
/* Didn't work -- free old one, try again. */
|
||
mfree (s->objfile->md, s->fullname);
|
||
s->fullname = NULL;
|
||
}
|
||
|
||
if (s->dirname != NULL)
|
||
{
|
||
/* Replace a path entry of $cdir with the compilation directory name */
|
||
#define cdir_len 5
|
||
/* We cast strstr's result in case an ANSIhole has made it const,
|
||
which produces a "required warning" when assigned to a nonconst. */
|
||
p = (char *)strstr (source_path, "$cdir");
|
||
if (p && (p == path || p[-1] == ':')
|
||
&& (p[cdir_len] == ':' || p[cdir_len] == '\0')) {
|
||
int len;
|
||
|
||
path = (char *)
|
||
alloca (strlen (source_path) + 1 + strlen (s->dirname) + 1);
|
||
len = p - source_path;
|
||
strncpy (path, source_path, len); /* Before $cdir */
|
||
strcpy (path + len, s->dirname); /* new stuff */
|
||
strcat (path + len, source_path + len + cdir_len); /* After $cdir */
|
||
}
|
||
}
|
||
|
||
result = openp (path, 0, s->filename, O_RDONLY, 0, &s->fullname);
|
||
if (result < 0)
|
||
{
|
||
/* Didn't work. Try using just the basename. */
|
||
p = basename (s->filename);
|
||
if (p != s->filename)
|
||
result = openp(path, 0, p, O_RDONLY,0, &s->fullname);
|
||
}
|
||
if (result >= 0)
|
||
{
|
||
fullname = s -> fullname;
|
||
s -> fullname = mstrsave (s -> objfile -> md, s -> fullname);
|
||
free (fullname);
|
||
}
|
||
return result;
|
||
}
|
||
|
||
|
||
/* Create and initialize the table S->line_charpos that records
|
||
the positions of the lines in the source file, which is assumed
|
||
to be open on descriptor DESC.
|
||
All set S->nlines to the number of such lines. */
|
||
|
||
static void
|
||
find_source_lines (s, desc)
|
||
struct symtab *s;
|
||
int desc;
|
||
{
|
||
struct stat st;
|
||
register char *data, *p, *end;
|
||
int nlines = 0;
|
||
int lines_allocated = 1000;
|
||
int *line_charpos;
|
||
long exec_mtime;
|
||
int size;
|
||
#ifdef LSEEK_NOT_LINEAR
|
||
char c;
|
||
#endif
|
||
|
||
line_charpos = (int *) xmmalloc (s -> objfile -> md,
|
||
lines_allocated * sizeof (int));
|
||
if (fstat (desc, &st) < 0)
|
||
perror_with_name (s->filename);
|
||
|
||
if (exec_bfd) {
|
||
exec_mtime = bfd_get_mtime(exec_bfd);
|
||
if (exec_mtime && exec_mtime < st.st_mtime)
|
||
printf_filtered ("Source file is more recent than executable.\n");
|
||
}
|
||
|
||
#ifdef LSEEK_NOT_LINEAR
|
||
/* Have to read it byte by byte to find out where the chars live */
|
||
|
||
line_charpos[0] = tell(desc);
|
||
nlines = 1;
|
||
while (myread(desc, &c, 1)>0)
|
||
{
|
||
if (c == '\n')
|
||
{
|
||
if (nlines == lines_allocated)
|
||
{
|
||
lines_allocated *= 2;
|
||
line_charpos =
|
||
(int *) xmrealloc (s -> objfile -> md, (char *) line_charpos,
|
||
sizeof (int) * lines_allocated);
|
||
}
|
||
line_charpos[nlines++] = tell(desc);
|
||
}
|
||
}
|
||
|
||
#else
|
||
/* st_size might be a large type, but we only support source files whose
|
||
size fits in an int. FIXME. */
|
||
size = (int) st.st_size;
|
||
|
||
#ifdef BROKEN_LARGE_ALLOCA
|
||
data = (char *) xmalloc (size);
|
||
make_cleanup (free, data);
|
||
#else
|
||
data = (char *) alloca (size);
|
||
#endif
|
||
if (myread (desc, data, size) < 0)
|
||
perror_with_name (s->filename);
|
||
end = data + size;
|
||
p = data;
|
||
line_charpos[0] = 0;
|
||
nlines = 1;
|
||
while (p != end)
|
||
{
|
||
if (*p++ == '\n'
|
||
/* A newline at the end does not start a new line. */
|
||
&& p != end)
|
||
{
|
||
if (nlines == lines_allocated)
|
||
{
|
||
lines_allocated *= 2;
|
||
line_charpos =
|
||
(int *) xmrealloc (s -> objfile -> md, (char *) line_charpos,
|
||
sizeof (int) * lines_allocated);
|
||
}
|
||
line_charpos[nlines++] = p - data;
|
||
}
|
||
}
|
||
#endif
|
||
s->nlines = nlines;
|
||
s->line_charpos =
|
||
(int *) xmrealloc (s -> objfile -> md, (char *) line_charpos,
|
||
nlines * sizeof (int));
|
||
|
||
}
|
||
|
||
/* Return the character position of a line LINE in symtab S.
|
||
Return 0 if anything is invalid. */
|
||
|
||
#if 0 /* Currently unused */
|
||
|
||
int
|
||
source_line_charpos (s, line)
|
||
struct symtab *s;
|
||
int line;
|
||
{
|
||
if (!s) return 0;
|
||
if (!s->line_charpos || line <= 0) return 0;
|
||
if (line > s->nlines)
|
||
line = s->nlines;
|
||
return s->line_charpos[line - 1];
|
||
}
|
||
|
||
/* Return the line number of character position POS in symtab S. */
|
||
|
||
int
|
||
source_charpos_line (s, chr)
|
||
register struct symtab *s;
|
||
register int chr;
|
||
{
|
||
register int line = 0;
|
||
register int *lnp;
|
||
|
||
if (s == 0 || s->line_charpos == 0) return 0;
|
||
lnp = s->line_charpos;
|
||
/* Files are usually short, so sequential search is Ok */
|
||
while (line < s->nlines && *lnp <= chr)
|
||
{
|
||
line++;
|
||
lnp++;
|
||
}
|
||
if (line >= s->nlines)
|
||
line = s->nlines;
|
||
return line;
|
||
}
|
||
|
||
#endif /* 0 */
|
||
|
||
|
||
/* Get full pathname and line number positions for a symtab.
|
||
Return nonzero if line numbers may have changed.
|
||
Set *FULLNAME to actual name of the file as found by `openp',
|
||
or to 0 if the file is not found. */
|
||
|
||
static int
|
||
get_filename_and_charpos (s, fullname)
|
||
struct symtab *s;
|
||
char **fullname;
|
||
{
|
||
register int desc, linenums_changed = 0;
|
||
|
||
desc = open_source_file (s);
|
||
if (desc < 0)
|
||
{
|
||
if (fullname)
|
||
*fullname = NULL;
|
||
return 0;
|
||
}
|
||
if (fullname)
|
||
*fullname = s->fullname;
|
||
if (s->line_charpos == 0) linenums_changed = 1;
|
||
if (linenums_changed) find_source_lines (s, desc);
|
||
close (desc);
|
||
return linenums_changed;
|
||
}
|
||
|
||
/* Print text describing the full name of the source file S
|
||
and the line number LINE and its corresponding character position.
|
||
The text starts with two Ctrl-z so that the Emacs-GDB interface
|
||
can easily find it.
|
||
|
||
MID_STATEMENT is nonzero if the PC is not at the beginning of that line.
|
||
|
||
Return 1 if successful, 0 if could not find the file. */
|
||
|
||
int
|
||
identify_source_line (s, line, mid_statement)
|
||
struct symtab *s;
|
||
int line;
|
||
int mid_statement;
|
||
{
|
||
if (s->line_charpos == 0)
|
||
get_filename_and_charpos (s, (char **)NULL);
|
||
if (s->fullname == 0)
|
||
return 0;
|
||
if (line >= s->nlines)
|
||
return 0;
|
||
printf ("\032\032%s:%d:%d:%s:0x%x\n", s->fullname,
|
||
line, s->line_charpos[line - 1],
|
||
mid_statement ? "middle" : "beg",
|
||
get_frame_pc (get_current_frame()));
|
||
current_source_line = line;
|
||
first_line_listed = line;
|
||
last_line_listed = line;
|
||
current_source_symtab = s;
|
||
return 1;
|
||
}
|
||
|
||
/* Print source lines from the file of symtab S,
|
||
starting with line number LINE and stopping before line number STOPLINE. */
|
||
|
||
void
|
||
print_source_lines (s, line, stopline, noerror)
|
||
struct symtab *s;
|
||
int line, stopline;
|
||
int noerror;
|
||
{
|
||
register int c;
|
||
register int desc;
|
||
register FILE *stream;
|
||
int nlines = stopline - line;
|
||
|
||
/* Regardless of whether we can open the file, set current_source_symtab. */
|
||
current_source_symtab = s;
|
||
current_source_line = line;
|
||
first_line_listed = line;
|
||
|
||
desc = open_source_file (s);
|
||
if (desc < 0)
|
||
{
|
||
if (! noerror) {
|
||
char *name = alloca (strlen (s->filename) + 100);
|
||
sprintf (name, "%s:%d", s->filename, line);
|
||
print_sys_errmsg (name, errno);
|
||
}
|
||
return;
|
||
}
|
||
|
||
if (s->line_charpos == 0)
|
||
find_source_lines (s, desc);
|
||
|
||
if (line < 1 || line > s->nlines)
|
||
{
|
||
close (desc);
|
||
error ("Line number %d out of range; %s has %d lines.",
|
||
line, s->filename, s->nlines);
|
||
}
|
||
|
||
if (lseek (desc, s->line_charpos[line - 1], 0) < 0)
|
||
{
|
||
close (desc);
|
||
perror_with_name (s->filename);
|
||
}
|
||
|
||
stream = fdopen (desc, "r");
|
||
clearerr (stream);
|
||
|
||
while (nlines-- > 0)
|
||
{
|
||
c = fgetc (stream);
|
||
if (c == EOF) break;
|
||
last_line_listed = current_source_line;
|
||
printf_filtered ("%d\t", current_source_line++);
|
||
do
|
||
{
|
||
if (c < 040 && c != '\t' && c != '\n' && c != '\r')
|
||
printf_filtered ("^%c", c + 0100);
|
||
else if (c == 0177)
|
||
printf_filtered ("^?");
|
||
else
|
||
printf_filtered ("%c", c);
|
||
} while (c != '\n' && (c = fgetc (stream)) >= 0);
|
||
}
|
||
|
||
fclose (stream);
|
||
}
|
||
|
||
|
||
|
||
/*
|
||
C++
|
||
Print a list of files and line numbers which a user may choose from
|
||
in order to list a function which was specified ambiguously
|
||
(as with `list classname::overloadedfuncname', for example).
|
||
The vector in SALS provides the filenames and line numbers.
|
||
*/
|
||
static void
|
||
ambiguous_line_spec (sals)
|
||
struct symtabs_and_lines *sals;
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < sals->nelts; ++i)
|
||
printf_filtered("file: \"%s\", line number: %d\n",
|
||
sals->sals[i].symtab->filename, sals->sals[i].line);
|
||
}
|
||
|
||
|
||
static void
|
||
list_command (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
struct symtabs_and_lines sals, sals_end;
|
||
struct symtab_and_line sal, sal_end;
|
||
struct symbol *sym;
|
||
char *arg1;
|
||
int no_end = 1;
|
||
int dummy_end = 0;
|
||
int dummy_beg = 0;
|
||
int linenum_beg = 0;
|
||
char *p;
|
||
|
||
if (!have_full_symbols () && !have_partial_symbols())
|
||
error ("No symbol table is loaded. Use the \"file\" command.");
|
||
|
||
/* Pull in a current source symtab if necessary */
|
||
if (current_source_symtab == 0 &&
|
||
(arg == 0 || arg[0] == '+' || arg[0] == '-'))
|
||
select_source_symtab (0);
|
||
|
||
/* "l" or "l +" lists next ten lines. */
|
||
|
||
if (arg == 0 || STREQ (arg, "+"))
|
||
{
|
||
if (current_source_symtab == 0)
|
||
error ("No default source file yet. Do \"help list\".");
|
||
print_source_lines (current_source_symtab, current_source_line,
|
||
current_source_line + lines_to_list, 0);
|
||
return;
|
||
}
|
||
|
||
/* "l -" lists previous ten lines, the ones before the ten just listed. */
|
||
if (STREQ (arg, "-"))
|
||
{
|
||
if (current_source_symtab == 0)
|
||
error ("No default source file yet. Do \"help list\".");
|
||
print_source_lines (current_source_symtab,
|
||
max (first_line_listed - lines_to_list, 1),
|
||
first_line_listed, 0);
|
||
return;
|
||
}
|
||
|
||
/* Now if there is only one argument, decode it in SAL
|
||
and set NO_END.
|
||
If there are two arguments, decode them in SAL and SAL_END
|
||
and clear NO_END; however, if one of the arguments is blank,
|
||
set DUMMY_BEG or DUMMY_END to record that fact. */
|
||
|
||
arg1 = arg;
|
||
if (*arg1 == ',')
|
||
dummy_beg = 1;
|
||
else
|
||
{
|
||
sals = decode_line_1 (&arg1, 0, 0, 0);
|
||
|
||
if (! sals.nelts) return; /* C++ */
|
||
if (sals.nelts > 1)
|
||
{
|
||
ambiguous_line_spec (&sals);
|
||
free (sals.sals);
|
||
return;
|
||
}
|
||
|
||
sal = sals.sals[0];
|
||
free (sals.sals);
|
||
}
|
||
|
||
/* Record whether the BEG arg is all digits. */
|
||
|
||
for (p = arg; p != arg1 && *p >= '0' && *p <= '9'; p++);
|
||
linenum_beg = (p == arg1);
|
||
|
||
while (*arg1 == ' ' || *arg1 == '\t')
|
||
arg1++;
|
||
if (*arg1 == ',')
|
||
{
|
||
no_end = 0;
|
||
arg1++;
|
||
while (*arg1 == ' ' || *arg1 == '\t')
|
||
arg1++;
|
||
if (*arg1 == 0)
|
||
dummy_end = 1;
|
||
else
|
||
{
|
||
if (dummy_beg)
|
||
sals_end = decode_line_1 (&arg1, 0, 0, 0);
|
||
else
|
||
sals_end = decode_line_1 (&arg1, 0, sal.symtab, sal.line);
|
||
if (sals_end.nelts == 0)
|
||
return;
|
||
if (sals_end.nelts > 1)
|
||
{
|
||
ambiguous_line_spec (&sals_end);
|
||
free (sals_end.sals);
|
||
return;
|
||
}
|
||
sal_end = sals_end.sals[0];
|
||
free (sals_end.sals);
|
||
}
|
||
}
|
||
|
||
if (*arg1)
|
||
error ("Junk at end of line specification.");
|
||
|
||
if (!no_end && !dummy_beg && !dummy_end
|
||
&& sal.symtab != sal_end.symtab)
|
||
error ("Specified start and end are in different files.");
|
||
if (dummy_beg && dummy_end)
|
||
error ("Two empty args do not say what lines to list.");
|
||
|
||
/* if line was specified by address,
|
||
first print exactly which line, and which file.
|
||
In this case, sal.symtab == 0 means address is outside
|
||
of all known source files, not that user failed to give a filename. */
|
||
if (*arg == '*')
|
||
{
|
||
if (sal.symtab == 0)
|
||
error ("No source file for address %s.", local_hex_string(sal.pc));
|
||
sym = find_pc_function (sal.pc);
|
||
if (sym)
|
||
{
|
||
printf_filtered ("%s is in ", local_hex_string(sal.pc));
|
||
fputs_filtered (SYMBOL_SOURCE_NAME (sym), stdout);
|
||
printf_filtered (" (%s:%d).\n", sal.symtab->filename, sal.line);
|
||
}
|
||
else
|
||
printf_filtered ("%s is at %s:%d.\n",
|
||
local_hex_string(sal.pc),
|
||
sal.symtab->filename, sal.line);
|
||
}
|
||
|
||
/* If line was not specified by just a line number,
|
||
and it does not imply a symtab, it must be an undebuggable symbol
|
||
which means no source code. */
|
||
|
||
if (! linenum_beg && sal.symtab == 0)
|
||
error ("No line number known for %s.", arg);
|
||
|
||
/* If this command is repeated with RET,
|
||
turn it into the no-arg variant. */
|
||
|
||
if (from_tty)
|
||
*arg = 0;
|
||
|
||
if (dummy_beg && sal_end.symtab == 0)
|
||
error ("No default source file yet. Do \"help list\".");
|
||
if (dummy_beg)
|
||
print_source_lines (sal_end.symtab,
|
||
max (sal_end.line - (lines_to_list - 1), 1),
|
||
sal_end.line + 1, 0);
|
||
else if (sal.symtab == 0)
|
||
error ("No default source file yet. Do \"help list\".");
|
||
else if (no_end)
|
||
print_source_lines (sal.symtab,
|
||
max (sal.line - (lines_to_list / 2), 1),
|
||
sal.line + (lines_to_list / 2), 0);
|
||
else
|
||
print_source_lines (sal.symtab, sal.line,
|
||
(dummy_end
|
||
? sal.line + lines_to_list
|
||
: sal_end.line + 1),
|
||
0);
|
||
}
|
||
|
||
/* Print info on range of pc's in a specified line. */
|
||
|
||
static void
|
||
line_info (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
struct symtabs_and_lines sals;
|
||
struct symtab_and_line sal;
|
||
CORE_ADDR start_pc, end_pc;
|
||
int i;
|
||
|
||
if (arg == 0)
|
||
{
|
||
sal.symtab = current_source_symtab;
|
||
sal.line = last_line_listed;
|
||
sals.nelts = 1;
|
||
sals.sals = (struct symtab_and_line *)
|
||
xmalloc (sizeof (struct symtab_and_line));
|
||
sals.sals[0] = sal;
|
||
}
|
||
else
|
||
{
|
||
sals = decode_line_spec_1 (arg, 0);
|
||
|
||
/* If this command is repeated with RET,
|
||
turn it into the no-arg variant. */
|
||
if (from_tty)
|
||
*arg = 0;
|
||
}
|
||
|
||
/* C++ More than one line may have been specified, as when the user
|
||
specifies an overloaded function name. Print info on them all. */
|
||
for (i = 0; i < sals.nelts; i++)
|
||
{
|
||
sal = sals.sals[i];
|
||
|
||
if (sal.symtab == 0)
|
||
error ("No source file specified.");
|
||
|
||
if (sal.line > 0
|
||
&& find_line_pc_range (sal.symtab, sal.line, &start_pc, &end_pc))
|
||
{
|
||
if (start_pc == end_pc)
|
||
printf_filtered ("Line %d of \"%s\" is at pc %s but contains no code.\n",
|
||
sal.line, sal.symtab->filename, local_hex_string(start_pc));
|
||
else
|
||
{
|
||
printf_filtered ("Line %d of \"%s\" starts at pc %s",
|
||
sal.line, sal.symtab->filename,
|
||
local_hex_string(start_pc));
|
||
printf_filtered (" and ends at %s.\n",
|
||
local_hex_string(end_pc));
|
||
}
|
||
/* x/i should display this line's code. */
|
||
set_next_address (start_pc);
|
||
/* Repeating "info line" should do the following line. */
|
||
last_line_listed = sal.line + 1;
|
||
}
|
||
else
|
||
printf_filtered ("Line number %d is out of range for \"%s\".\n",
|
||
sal.line, sal.symtab->filename);
|
||
}
|
||
}
|
||
|
||
/* Commands to search the source file for a regexp. */
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
forward_search_command (regex, from_tty)
|
||
char *regex;
|
||
int from_tty;
|
||
{
|
||
register int c;
|
||
register int desc;
|
||
register FILE *stream;
|
||
int line = last_line_listed + 1;
|
||
char *msg;
|
||
|
||
msg = (char *) re_comp (regex);
|
||
if (msg)
|
||
error (msg);
|
||
|
||
if (current_source_symtab == 0)
|
||
select_source_symtab (0);
|
||
|
||
/* Search from last_line_listed+1 in current_source_symtab */
|
||
|
||
desc = open_source_file (current_source_symtab);
|
||
if (desc < 0)
|
||
perror_with_name (current_source_symtab->filename);
|
||
|
||
if (current_source_symtab->line_charpos == 0)
|
||
find_source_lines (current_source_symtab, desc);
|
||
|
||
if (line < 1 || line > current_source_symtab->nlines)
|
||
{
|
||
close (desc);
|
||
error ("Expression not found");
|
||
}
|
||
|
||
if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0)
|
||
{
|
||
close (desc);
|
||
perror_with_name (current_source_symtab->filename);
|
||
}
|
||
|
||
stream = fdopen (desc, "r");
|
||
clearerr (stream);
|
||
while (1) {
|
||
/* FIXME!!! We walk right off the end of buf if we get a long line!!! */
|
||
char buf[4096]; /* Should be reasonable??? */
|
||
register char *p = buf;
|
||
|
||
c = getc (stream);
|
||
if (c == EOF)
|
||
break;
|
||
do {
|
||
*p++ = c;
|
||
} while (c != '\n' && (c = getc (stream)) >= 0);
|
||
|
||
/* we now have a source line in buf, null terminate and match */
|
||
*p = 0;
|
||
if (re_exec (buf) > 0)
|
||
{
|
||
/* Match! */
|
||
fclose (stream);
|
||
print_source_lines (current_source_symtab,
|
||
line, line+1, 0);
|
||
current_source_line = max (line - lines_to_list / 2, 1);
|
||
return;
|
||
}
|
||
line++;
|
||
}
|
||
|
||
printf_filtered ("Expression not found\n");
|
||
fclose (stream);
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
reverse_search_command (regex, from_tty)
|
||
char *regex;
|
||
int from_tty;
|
||
{
|
||
register int c;
|
||
register int desc;
|
||
register FILE *stream;
|
||
int line = last_line_listed - 1;
|
||
char *msg;
|
||
|
||
msg = (char *) re_comp (regex);
|
||
if (msg)
|
||
error (msg);
|
||
|
||
if (current_source_symtab == 0)
|
||
select_source_symtab (0);
|
||
|
||
/* Search from last_line_listed-1 in current_source_symtab */
|
||
|
||
desc = open_source_file (current_source_symtab);
|
||
if (desc < 0)
|
||
perror_with_name (current_source_symtab->filename);
|
||
|
||
if (current_source_symtab->line_charpos == 0)
|
||
find_source_lines (current_source_symtab, desc);
|
||
|
||
if (line < 1 || line > current_source_symtab->nlines)
|
||
{
|
||
close (desc);
|
||
error ("Expression not found");
|
||
}
|
||
|
||
if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0)
|
||
{
|
||
close (desc);
|
||
perror_with_name (current_source_symtab->filename);
|
||
}
|
||
|
||
stream = fdopen (desc, "r");
|
||
clearerr (stream);
|
||
while (line > 1)
|
||
{
|
||
/* FIXME!!! We walk right off the end of buf if we get a long line!!! */
|
||
char buf[4096]; /* Should be reasonable??? */
|
||
register char *p = buf;
|
||
|
||
c = getc (stream);
|
||
if (c == EOF)
|
||
break;
|
||
do {
|
||
*p++ = c;
|
||
} while (c != '\n' && (c = getc (stream)) >= 0);
|
||
|
||
/* We now have a source line in buf; null terminate and match. */
|
||
*p = 0;
|
||
if (re_exec (buf) > 0)
|
||
{
|
||
/* Match! */
|
||
fclose (stream);
|
||
print_source_lines (current_source_symtab,
|
||
line, line+1, 0);
|
||
current_source_line = max (line - lines_to_list / 2, 1);
|
||
return;
|
||
}
|
||
line--;
|
||
if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0)
|
||
{
|
||
fclose (stream);
|
||
perror_with_name (current_source_symtab->filename);
|
||
}
|
||
}
|
||
|
||
printf_filtered ("Expression not found\n");
|
||
fclose (stream);
|
||
return;
|
||
}
|
||
|
||
void
|
||
_initialize_source ()
|
||
{
|
||
current_source_symtab = 0;
|
||
init_source_path ();
|
||
|
||
add_com ("directory", class_files, directory_command,
|
||
"Add directory DIR to beginning of search path for source files.\n\
|
||
Forget cached info on source file locations and line positions.\n\
|
||
DIR can also be $cwd for the current working directory, or $cdir for the\n\
|
||
directory in which the source file was compiled into object code.\n\
|
||
With no argument, reset the search path to $cdir:$cwd, the default.");
|
||
|
||
add_cmd ("directories", no_class, show_directories,
|
||
"Current search path for finding source files.\n\
|
||
$cwd in the path means the current working directory.\n\
|
||
$cdir in the path means the compilation directory of the source file.",
|
||
&showlist);
|
||
|
||
add_info ("source", source_info,
|
||
"Information about the current source file.");
|
||
|
||
add_info ("line", line_info,
|
||
"Core addresses of the code for a source line.\n\
|
||
Line can be specified as\n\
|
||
LINENUM, to list around that line in current file,\n\
|
||
FILE:LINENUM, to list around that line in that file,\n\
|
||
FUNCTION, to list around beginning of that function,\n\
|
||
FILE:FUNCTION, to distinguish among like-named static functions.\n\
|
||
Default is to describe the last source line that was listed.\n\n\
|
||
This sets the default address for \"x\" to the line's first instruction\n\
|
||
so that \"x/i\" suffices to start examining the machine code.\n\
|
||
The address is also stored as the value of \"$_\".");
|
||
|
||
add_com ("forward-search", class_files, forward_search_command,
|
||
"Search for regular expression (see regex(3)) from last line listed.");
|
||
add_com_alias ("search", "forward-search", class_files, 0);
|
||
|
||
add_com ("reverse-search", class_files, reverse_search_command,
|
||
"Search backward for regular expression (see regex(3)) from last line listed.");
|
||
|
||
add_com ("list", class_files, list_command,
|
||
"List specified function or line.\n\
|
||
With no argument, lists ten more lines after or around previous listing.\n\
|
||
\"list -\" lists the ten lines before a previous ten-line listing.\n\
|
||
One argument specifies a line, and ten lines are listed around that line.\n\
|
||
Two arguments with comma between specify starting and ending lines to list.\n\
|
||
Lines can be specified in these ways:\n\
|
||
LINENUM, to list around that line in current file,\n\
|
||
FILE:LINENUM, to list around that line in that file,\n\
|
||
FUNCTION, to list around beginning of that function,\n\
|
||
FILE:FUNCTION, to distinguish among like-named static functions.\n\
|
||
*ADDRESS, to list around the line containing that address.\n\
|
||
With two args if one is empty it stands for ten lines away from the other arg.");
|
||
add_com_alias ("l", "list", class_files, 1);
|
||
|
||
add_show_from_set
|
||
(add_set_cmd ("listsize", class_support, var_uinteger,
|
||
(char *)&lines_to_list,
|
||
"Set number of source lines gdb will list by default.",
|
||
&setlist),
|
||
&showlist);
|
||
}
|