1455 lines
42 KiB
C
1455 lines
42 KiB
C
/* Parser for linespec for the GNU debugger, GDB.
|
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Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
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1996, 1997, 1998, 1999, 2000, 2001
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Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
|
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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||
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This program is distributed in the hope that it will be useful,
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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., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "symtab.h"
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#include "frame.h"
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#include "command.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "source.h"
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#include "demangle.h"
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#include "value.h"
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#include "completer.h"
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#include "cp-abi.h"
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#include "parser-defs.h"
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/* We share this one with symtab.c, but it is not exported widely. */
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extern char *operator_chars (char *, char **);
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/* Prototypes for local functions */
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static void initialize_defaults (struct symtab **default_symtab,
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int *default_line);
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static void set_flags (char *arg, int *is_quoted, char **paren_pointer);
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static struct symtabs_and_lines decode_indirect (char **argptr);
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static char *locate_first_half (char **argptr, int *is_quote_enclosed);
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static struct symtabs_and_lines decode_compound (char **argptr,
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int funfirstline,
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char ***canonical,
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char *saved_arg,
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char *p);
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static NORETURN void cplusplus_error (const char *name,
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const char *fmt, ...)
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ATTR_NORETURN ATTR_FORMAT (printf, 2, 3);
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static int total_number_of_methods (struct type *type);
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static int find_methods (struct type *, char *, struct symbol **);
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static void build_canonical_line_spec (struct symtab_and_line *,
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char *, char ***);
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static char *find_toplevel_char (char *s, char c);
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static struct symtabs_and_lines decode_line_2 (struct symbol *[],
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int, int, char ***);
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static struct symtab *symtab_from_filename (char **argptr,
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char *p, int is_quote_enclosed);
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static struct
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symtabs_and_lines decode_all_digits (char **argptr,
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struct symtab *default_symtab,
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int default_line,
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char ***canonical,
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struct symtab *s,
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char *q);
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static struct
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symtabs_and_lines symbol_found (int funfirstline,
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char ***canonical,
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char *copy,
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struct symbol *sym,
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struct symtab *s,
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struct symtab *sym_symtab);
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static struct
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symtabs_and_lines minsym_found (int funfirstline,
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struct minimal_symbol *msymbol);
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/* Helper functions. */
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/* Issue a helpful hint on using the command completion feature on
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single quoted demangled C++ symbols as part of the completion
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error. */
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static NORETURN void
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cplusplus_error (const char *name, const char *fmt, ...)
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{
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struct ui_file *tmp_stream;
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tmp_stream = mem_fileopen ();
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make_cleanup_ui_file_delete (tmp_stream);
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{
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va_list args;
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va_start (args, fmt);
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vfprintf_unfiltered (tmp_stream, fmt, args);
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va_end (args);
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}
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while (*name == '\'')
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name++;
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fprintf_unfiltered (tmp_stream,
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("Hint: try '%s<TAB> or '%s<ESC-?>\n"
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"(Note leading single quote.)"),
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name, name);
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error_stream (tmp_stream);
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}
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/* Return the number of methods described for TYPE, including the
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methods from types it derives from. This can't be done in the symbol
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reader because the type of the baseclass might still be stubbed
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when the definition of the derived class is parsed. */
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static int
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total_number_of_methods (struct type *type)
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{
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int n;
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int count;
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CHECK_TYPEDEF (type);
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if (TYPE_CPLUS_SPECIFIC (type) == NULL)
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return 0;
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count = TYPE_NFN_FIELDS_TOTAL (type);
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for (n = 0; n < TYPE_N_BASECLASSES (type); n++)
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count += total_number_of_methods (TYPE_BASECLASS (type, n));
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return count;
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}
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/* Recursive helper function for decode_line_1.
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Look for methods named NAME in type T.
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Return number of matches.
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Put matches in SYM_ARR, which should have been allocated with
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a size of total_number_of_methods (T) * sizeof (struct symbol *).
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Note that this function is g++ specific. */
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static int
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find_methods (struct type *t, char *name, struct symbol **sym_arr)
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{
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int i1 = 0;
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int ibase;
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char *class_name = type_name_no_tag (t);
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/* Ignore this class if it doesn't have a name. This is ugly, but
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unless we figure out how to get the physname without the name of
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the class, then the loop can't do any good. */
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if (class_name
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&& (lookup_symbol (class_name, (struct block *) NULL,
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STRUCT_NAMESPACE, (int *) NULL,
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(struct symtab **) NULL)))
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{
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int method_counter;
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int name_len = strlen (name);
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CHECK_TYPEDEF (t);
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/* Loop over each method name. At this level, all overloads of a name
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are counted as a single name. There is an inner loop which loops over
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each overload. */
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for (method_counter = TYPE_NFN_FIELDS (t) - 1;
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method_counter >= 0;
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--method_counter)
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{
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int field_counter;
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char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter);
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char dem_opname[64];
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if (strncmp (method_name, "__", 2) == 0 ||
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strncmp (method_name, "op", 2) == 0 ||
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strncmp (method_name, "type", 4) == 0)
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{
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if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI))
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method_name = dem_opname;
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else if (cplus_demangle_opname (method_name, dem_opname, 0))
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method_name = dem_opname;
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}
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if (strcmp_iw (name, method_name) == 0)
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/* Find all the overloaded methods with that name. */
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for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1;
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field_counter >= 0;
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--field_counter)
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{
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struct fn_field *f;
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char *phys_name;
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f = TYPE_FN_FIELDLIST1 (t, method_counter);
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if (TYPE_FN_FIELD_STUB (f, field_counter))
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{
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char *tmp_name;
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tmp_name = gdb_mangle_name (t,
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method_counter,
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field_counter);
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phys_name = alloca (strlen (tmp_name) + 1);
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strcpy (phys_name, tmp_name);
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xfree (tmp_name);
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}
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else
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phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter);
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/* Destructor is handled by caller, dont add it to the list */
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if (is_destructor_name (phys_name) != 0)
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continue;
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sym_arr[i1] = lookup_symbol (phys_name,
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NULL, VAR_NAMESPACE,
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(int *) NULL,
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(struct symtab **) NULL);
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if (sym_arr[i1])
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i1++;
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else
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{
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/* This error message gets printed, but the method
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still seems to be found
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fputs_filtered("(Cannot find method ", gdb_stdout);
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fprintf_symbol_filtered (gdb_stdout, phys_name,
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language_cplus,
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DMGL_PARAMS | DMGL_ANSI);
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fputs_filtered(" - possibly inlined.)\n", gdb_stdout);
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*/
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}
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}
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else if (strncmp (class_name, name, name_len) == 0
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&& (class_name[name_len] == '\0'
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|| class_name[name_len] == '<'))
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{
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/* For GCC 3.x and stabs, constructors and destructors have names
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like __base_ctor and __complete_dtor. Check the physname for now
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if we're looking for a constructor. */
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for (field_counter
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= TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1;
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field_counter >= 0;
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--field_counter)
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{
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struct fn_field *f;
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char *phys_name;
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f = TYPE_FN_FIELDLIST1 (t, method_counter);
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/* GCC 3.x will never produce stabs stub methods, so we don't need
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to handle this case. */
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if (TYPE_FN_FIELD_STUB (f, field_counter))
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continue;
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phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter);
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if (! is_constructor_name (phys_name))
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continue;
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/* If this method is actually defined, include it in the
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list. */
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sym_arr[i1] = lookup_symbol (phys_name,
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NULL, VAR_NAMESPACE,
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(int *) NULL,
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(struct symtab **) NULL);
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if (sym_arr[i1])
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i1++;
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}
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}
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}
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}
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/* Only search baseclasses if there is no match yet, since names in
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derived classes override those in baseclasses.
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FIXME: The above is not true; it is only true of member functions
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if they have the same number of arguments (??? - section 13.1 of the
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ARM says the function members are not in the same scope but doesn't
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really spell out the rules in a way I understand. In any case, if
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the number of arguments differ this is a case in which we can overload
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rather than hiding without any problem, and gcc 2.4.5 does overload
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rather than hiding in this case). */
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if (i1 == 0)
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for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++)
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i1 += find_methods (TYPE_BASECLASS (t, ibase), name, sym_arr + i1);
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return i1;
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}
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/* Helper function for decode_line_1.
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Build a canonical line spec in CANONICAL if it is non-NULL and if
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the SAL has a symtab.
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If SYMNAME is non-NULL the canonical line spec is `filename:symname'.
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If SYMNAME is NULL the line number from SAL is used and the canonical
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line spec is `filename:linenum'. */
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static void
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build_canonical_line_spec (struct symtab_and_line *sal, char *symname,
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char ***canonical)
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{
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char **canonical_arr;
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char *canonical_name;
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char *filename;
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struct symtab *s = sal->symtab;
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if (s == (struct symtab *) NULL
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|| s->filename == (char *) NULL
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|| canonical == (char ***) NULL)
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return;
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canonical_arr = (char **) xmalloc (sizeof (char *));
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*canonical = canonical_arr;
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filename = s->filename;
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if (symname != NULL)
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{
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canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2);
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sprintf (canonical_name, "%s:%s", filename, symname);
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}
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else
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{
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canonical_name = xmalloc (strlen (filename) + 30);
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sprintf (canonical_name, "%s:%d", filename, sal->line);
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}
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canonical_arr[0] = canonical_name;
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}
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/* Find an instance of the character C in the string S that is outside
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of all parenthesis pairs, single-quoted strings, and double-quoted
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strings. Also, ignore the char within a template name, like a ','
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within foo<int, int>. */
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static char *
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find_toplevel_char (char *s, char c)
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{
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int quoted = 0; /* zero if we're not in quotes;
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'"' if we're in a double-quoted string;
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'\'' if we're in a single-quoted string. */
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int depth = 0; /* number of unclosed parens we've seen */
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char *scan;
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for (scan = s; *scan; scan++)
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{
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if (quoted)
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{
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if (*scan == quoted)
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quoted = 0;
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else if (*scan == '\\' && *(scan + 1))
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scan++;
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}
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else if (*scan == c && ! quoted && depth == 0)
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return scan;
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else if (*scan == '"' || *scan == '\'')
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quoted = *scan;
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else if (*scan == '(' || *scan == '<')
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depth++;
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else if ((*scan == ')' || *scan == '>') && depth > 0)
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depth--;
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}
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return 0;
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}
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|
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/* Given a list of NELTS symbols in SYM_ARR, return a list of lines to
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operate on (ask user if necessary).
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If CANONICAL is non-NULL return a corresponding array of mangled names
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as canonical line specs there. */
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||
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||
static struct symtabs_and_lines
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decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline,
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char ***canonical)
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{
|
||
struct symtabs_and_lines values, return_values;
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char *args, *arg1;
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int i;
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char *prompt;
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char *symname;
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struct cleanup *old_chain;
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char **canonical_arr = (char **) NULL;
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values.sals = (struct symtab_and_line *)
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alloca (nelts * sizeof (struct symtab_and_line));
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return_values.sals = (struct symtab_and_line *)
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xmalloc (nelts * sizeof (struct symtab_and_line));
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old_chain = make_cleanup (xfree, return_values.sals);
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||
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if (canonical)
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{
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canonical_arr = (char **) xmalloc (nelts * sizeof (char *));
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make_cleanup (xfree, canonical_arr);
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memset (canonical_arr, 0, nelts * sizeof (char *));
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*canonical = canonical_arr;
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||
}
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||
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i = 0;
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printf_unfiltered ("[0] cancel\n[1] all\n");
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while (i < nelts)
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{
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init_sal (&return_values.sals[i]); /* initialize to zeroes */
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init_sal (&values.sals[i]);
|
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if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK)
|
||
{
|
||
values.sals[i] = find_function_start_sal (sym_arr[i], funfirstline);
|
||
printf_unfiltered ("[%d] %s at %s:%d\n",
|
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(i + 2),
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SYMBOL_SOURCE_NAME (sym_arr[i]),
|
||
values.sals[i].symtab->filename,
|
||
values.sals[i].line);
|
||
}
|
||
else
|
||
printf_unfiltered ("?HERE\n");
|
||
i++;
|
||
}
|
||
|
||
if ((prompt = getenv ("PS2")) == NULL)
|
||
{
|
||
prompt = "> ";
|
||
}
|
||
args = command_line_input (prompt, 0, "overload-choice");
|
||
|
||
if (args == 0 || *args == 0)
|
||
error_no_arg ("one or more choice numbers");
|
||
|
||
i = 0;
|
||
while (*args)
|
||
{
|
||
int num;
|
||
|
||
arg1 = args;
|
||
while (*arg1 >= '0' && *arg1 <= '9')
|
||
arg1++;
|
||
if (*arg1 && *arg1 != ' ' && *arg1 != '\t')
|
||
error ("Arguments must be choice numbers.");
|
||
|
||
num = atoi (args);
|
||
|
||
if (num == 0)
|
||
error ("canceled");
|
||
else if (num == 1)
|
||
{
|
||
if (canonical_arr)
|
||
{
|
||
for (i = 0; i < nelts; i++)
|
||
{
|
||
if (canonical_arr[i] == NULL)
|
||
{
|
||
symname = SYMBOL_NAME (sym_arr[i]);
|
||
canonical_arr[i] = savestring (symname, strlen (symname));
|
||
}
|
||
}
|
||
}
|
||
memcpy (return_values.sals, values.sals,
|
||
(nelts * sizeof (struct symtab_and_line)));
|
||
return_values.nelts = nelts;
|
||
discard_cleanups (old_chain);
|
||
return return_values;
|
||
}
|
||
|
||
if (num >= nelts + 2)
|
||
{
|
||
printf_unfiltered ("No choice number %d.\n", num);
|
||
}
|
||
else
|
||
{
|
||
num -= 2;
|
||
if (values.sals[num].pc)
|
||
{
|
||
if (canonical_arr)
|
||
{
|
||
symname = SYMBOL_NAME (sym_arr[num]);
|
||
make_cleanup (xfree, symname);
|
||
canonical_arr[i] = savestring (symname, strlen (symname));
|
||
}
|
||
return_values.sals[i++] = values.sals[num];
|
||
values.sals[num].pc = 0;
|
||
}
|
||
else
|
||
{
|
||
printf_unfiltered ("duplicate request for %d ignored.\n", num);
|
||
}
|
||
}
|
||
|
||
args = arg1;
|
||
while (*args == ' ' || *args == '\t')
|
||
args++;
|
||
}
|
||
return_values.nelts = i;
|
||
discard_cleanups (old_chain);
|
||
return return_values;
|
||
}
|
||
|
||
/* The parser of linespec itself. */
|
||
|
||
/* Parse a string that specifies a line number.
|
||
Pass the address of a char * variable; that variable will be
|
||
advanced over the characters actually parsed.
|
||
|
||
The string can be:
|
||
|
||
LINENUM -- that line number in current file. PC returned is 0.
|
||
FILE:LINENUM -- that line in that file. PC returned is 0.
|
||
FUNCTION -- line number of openbrace of that function.
|
||
PC returned is the start of the function.
|
||
VARIABLE -- line number of definition of that variable.
|
||
PC returned is 0.
|
||
FILE:FUNCTION -- likewise, but prefer functions in that file.
|
||
*EXPR -- line in which address EXPR appears.
|
||
|
||
This may all be followed by an "if EXPR", which we ignore.
|
||
|
||
FUNCTION may be an undebuggable function found in minimal symbol table.
|
||
|
||
If the argument FUNFIRSTLINE is nonzero, we want the first line
|
||
of real code inside a function when a function is specified, and it is
|
||
not OK to specify a variable or type to get its line number.
|
||
|
||
DEFAULT_SYMTAB specifies the file to use if none is specified.
|
||
It defaults to current_source_symtab.
|
||
DEFAULT_LINE specifies the line number to use for relative
|
||
line numbers (that start with signs). Defaults to current_source_line.
|
||
If CANONICAL is non-NULL, store an array of strings containing the canonical
|
||
line specs there if necessary. Currently overloaded member functions and
|
||
line numbers or static functions without a filename yield a canonical
|
||
line spec. The array and the line spec strings are allocated on the heap,
|
||
it is the callers responsibility to free them.
|
||
|
||
Note that it is possible to return zero for the symtab
|
||
if no file is validly specified. Callers must check that.
|
||
Also, the line number returned may be invalid. */
|
||
|
||
/* We allow single quotes in various places. This is a hideous
|
||
kludge, which exists because the completer can't yet deal with the
|
||
lack of single quotes. FIXME: write a linespec_completer which we
|
||
can use as appropriate instead of make_symbol_completion_list. */
|
||
|
||
struct symtabs_and_lines
|
||
decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab,
|
||
int default_line, char ***canonical)
|
||
{
|
||
struct symtabs_and_lines values;
|
||
struct symtab_and_line val;
|
||
char *p;
|
||
char *q;
|
||
struct symtab *s = NULL;
|
||
|
||
struct symbol *sym;
|
||
/* The symtab that SYM was found in. */
|
||
struct symtab *sym_symtab;
|
||
|
||
struct minimal_symbol *msymbol;
|
||
char *copy;
|
||
/* This is NULL if there are no parens in *ARGPTR, or a pointer to
|
||
the closing parenthesis if there are parens. */
|
||
char *paren_pointer;
|
||
/* This says whether or not something in *ARGPTR is quoted with
|
||
completer_quotes (i.e. with single quotes). */
|
||
int is_quoted;
|
||
/* Is part of *ARGPTR is enclosed in double quotes? */
|
||
int is_quote_enclosed;
|
||
char *saved_arg = *argptr;
|
||
|
||
init_sal (&val); /* initialize to zeroes */
|
||
|
||
/* Defaults have defaults. */
|
||
|
||
initialize_defaults (&default_symtab, &default_line);
|
||
|
||
/* See if arg is *PC */
|
||
|
||
if (**argptr == '*')
|
||
return decode_indirect (argptr);
|
||
|
||
/* Set various flags.
|
||
* 'paren_pointer' is important for overload checking, where
|
||
* we allow things like:
|
||
* (gdb) break c::f(int)
|
||
*/
|
||
|
||
set_flags (*argptr, &is_quoted, &paren_pointer);
|
||
|
||
/* Check to see if it's a multipart linespec (with colons or
|
||
periods). */
|
||
|
||
/* Locate the end of the first half of the linespec. */
|
||
|
||
p = locate_first_half (argptr, &is_quote_enclosed);
|
||
|
||
/* Does it look like there actually were two parts? */
|
||
|
||
if ((p[0] == ':' || p[0] == '.') && paren_pointer == NULL)
|
||
{
|
||
if (is_quoted)
|
||
*argptr = *argptr + 1;
|
||
|
||
/* Is it a C++ or Java compound data structure? */
|
||
|
||
if (p[0] == '.' || p[1] == ':')
|
||
return decode_compound (argptr, funfirstline, canonical,
|
||
saved_arg, p);
|
||
|
||
/* No, the first part is a filename; set s to be that file's
|
||
symtab. Also, move argptr past the filename. */
|
||
|
||
s = symtab_from_filename (argptr, p, is_quote_enclosed);
|
||
}
|
||
#if 0
|
||
/* No one really seems to know why this was added. It certainly
|
||
breaks the command line, though, whenever the passed
|
||
name is of the form ClassName::Method. This bit of code
|
||
singles out the class name, and if funfirstline is set (for
|
||
example, you are setting a breakpoint at this function),
|
||
you get an error. This did not occur with earlier
|
||
verions, so I am ifdef'ing this out. 3/29/99 */
|
||
else
|
||
{
|
||
/* Check if what we have till now is a symbol name */
|
||
|
||
/* We may be looking at a template instantiation such
|
||
as "foo<int>". Check here whether we know about it,
|
||
instead of falling through to the code below which
|
||
handles ordinary function names, because that code
|
||
doesn't like seeing '<' and '>' in a name -- the
|
||
skip_quoted call doesn't go past them. So see if we
|
||
can figure it out right now. */
|
||
|
||
copy = (char *) alloca (p - *argptr + 1);
|
||
memcpy (copy, *argptr, p - *argptr);
|
||
copy[p - *argptr] = '\000';
|
||
sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab);
|
||
if (sym)
|
||
{
|
||
*argptr = (*p == '\'') ? p + 1 : p;
|
||
return symbol_found (funfirstline, canonical, copy, sym,
|
||
NULL, sym_symtab);
|
||
}
|
||
/* Otherwise fall out from here and go to file/line spec
|
||
processing, etc. */
|
||
}
|
||
#endif
|
||
|
||
/* S is specified file's symtab, or 0 if no file specified.
|
||
arg no longer contains the file name. */
|
||
|
||
/* Check whether arg is all digits (and sign) */
|
||
|
||
q = *argptr;
|
||
if (*q == '-' || *q == '+')
|
||
q++;
|
||
while (*q >= '0' && *q <= '9')
|
||
q++;
|
||
|
||
if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ','))
|
||
/* We found a token consisting of all digits -- at least one digit. */
|
||
return decode_all_digits (argptr, default_symtab, default_line,
|
||
canonical, s, q);
|
||
|
||
/* Arg token is not digits => try it as a variable name
|
||
Find the next token (everything up to end or next whitespace). */
|
||
|
||
if (**argptr == '$') /* May be a convenience variable */
|
||
p = skip_quoted (*argptr + (((*argptr)[1] == '$') ? 2 : 1)); /* One or two $ chars possible */
|
||
else if (is_quoted)
|
||
{
|
||
p = skip_quoted (*argptr);
|
||
if (p[-1] != '\'')
|
||
error ("Unmatched single quote.");
|
||
}
|
||
else if (paren_pointer != NULL)
|
||
{
|
||
p = paren_pointer + 1;
|
||
}
|
||
else
|
||
{
|
||
p = skip_quoted (*argptr);
|
||
}
|
||
|
||
copy = (char *) alloca (p - *argptr + 1);
|
||
memcpy (copy, *argptr, p - *argptr);
|
||
copy[p - *argptr] = '\0';
|
||
if (p != *argptr
|
||
&& copy[0]
|
||
&& copy[0] == copy[p - *argptr - 1]
|
||
&& strchr (get_gdb_completer_quote_characters (), copy[0]) != NULL)
|
||
{
|
||
copy[p - *argptr - 1] = '\0';
|
||
copy++;
|
||
}
|
||
while (*p == ' ' || *p == '\t')
|
||
p++;
|
||
*argptr = p;
|
||
|
||
/* If it starts with $: may be a legitimate variable or routine name
|
||
(e.g. HP-UX millicode routines such as $$dyncall), or it may
|
||
be history value, or it may be a convenience variable */
|
||
|
||
if (*copy == '$')
|
||
{
|
||
struct value *valx;
|
||
int index = 0;
|
||
int need_canonical = 0;
|
||
|
||
p = (copy[1] == '$') ? copy + 2 : copy + 1;
|
||
while (*p >= '0' && *p <= '9')
|
||
p++;
|
||
if (!*p) /* reached end of token without hitting non-digit */
|
||
{
|
||
/* We have a value history reference */
|
||
sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index);
|
||
valx = access_value_history ((copy[1] == '$') ? -index : index);
|
||
if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT)
|
||
error ("History values used in line specs must have integer values.");
|
||
}
|
||
else
|
||
{
|
||
/* Not all digits -- may be user variable/function or a
|
||
convenience variable */
|
||
|
||
/* Look up entire name as a symbol first */
|
||
sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab);
|
||
s = (struct symtab *) 0;
|
||
need_canonical = 1;
|
||
/* Symbol was found --> jump to normal symbol processing. */
|
||
if (sym)
|
||
return symbol_found (funfirstline, canonical, copy, sym,
|
||
NULL, sym_symtab);
|
||
|
||
/* If symbol was not found, look in minimal symbol tables */
|
||
msymbol = lookup_minimal_symbol (copy, NULL, NULL);
|
||
/* Min symbol was found --> jump to minsym processing. */
|
||
if (msymbol)
|
||
return minsym_found (funfirstline, msymbol);
|
||
|
||
/* Not a user variable or function -- must be convenience variable */
|
||
need_canonical = (s == 0) ? 1 : 0;
|
||
valx = value_of_internalvar (lookup_internalvar (copy + 1));
|
||
if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT)
|
||
error ("Convenience variables used in line specs must have integer values.");
|
||
}
|
||
|
||
/* Either history value or convenience value from above, in valx */
|
||
val.symtab = s ? s : default_symtab;
|
||
val.line = value_as_long (valx);
|
||
val.pc = 0;
|
||
|
||
values.sals = (struct symtab_and_line *) xmalloc (sizeof val);
|
||
values.sals[0] = val;
|
||
values.nelts = 1;
|
||
|
||
if (need_canonical)
|
||
build_canonical_line_spec (values.sals, NULL, canonical);
|
||
|
||
return values;
|
||
}
|
||
|
||
|
||
/* Look up that token as a variable.
|
||
If file specified, use that file's per-file block to start with. */
|
||
|
||
sym = lookup_symbol (copy,
|
||
(s ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)
|
||
: get_selected_block (0)),
|
||
VAR_NAMESPACE, 0, &sym_symtab);
|
||
|
||
if (sym != NULL)
|
||
return symbol_found (funfirstline, canonical, copy, sym, s, sym_symtab);
|
||
|
||
msymbol = lookup_minimal_symbol (copy, NULL, NULL);
|
||
|
||
if (msymbol != NULL)
|
||
return minsym_found (funfirstline, msymbol);
|
||
|
||
if (!have_full_symbols () &&
|
||
!have_partial_symbols () && !have_minimal_symbols ())
|
||
error ("No symbol table is loaded. Use the \"file\" command.");
|
||
|
||
error ("Function \"%s\" not defined.", copy);
|
||
return values; /* for lint */
|
||
}
|
||
|
||
|
||
|
||
/* Now, more helper functions for decode_line_1. Some conventions
|
||
that these functions follow:
|
||
|
||
Decode_line_1 typically passes along some of its arguments or local
|
||
variables to the subfunctions. It passes the variables by
|
||
reference if they are modified by the subfunction, and by value
|
||
otherwise.
|
||
|
||
Some of the functions have side effects that don't arise from
|
||
variables that are passed by reference. In particular, if a
|
||
function is passed ARGPTR as an argument, it modifies what ARGPTR
|
||
points to; typically, it advances *ARGPTR past whatever substring
|
||
it has just looked at. (If it doesn't modify *ARGPTR, then the
|
||
function gets passed *ARGPTR instead, which is then called ARG: see
|
||
set_flags, for example.) Also, functions that return a struct
|
||
symtabs_and_lines may modify CANONICAL, as in the description of
|
||
decode_line_1.
|
||
|
||
If a function returns a struct symtabs_and_lines, then that struct
|
||
will immediately make its way up the call chain to be returned by
|
||
decode_line_1. In particular, all of the functions decode_XXX
|
||
calculate the appropriate struct symtabs_and_lines, under the
|
||
assumption that their argument is of the form XXX. */
|
||
|
||
/* First, some functions to initialize stuff at the beggining of the
|
||
function. */
|
||
|
||
static void
|
||
initialize_defaults (struct symtab **default_symtab, int *default_line)
|
||
{
|
||
if (*default_symtab == 0)
|
||
{
|
||
/* Use whatever we have for the default source line. We don't use
|
||
get_current_or_default_symtab_and_line as it can recurse and call
|
||
us back! */
|
||
struct symtab_and_line cursal =
|
||
get_current_source_symtab_and_line ();
|
||
|
||
*default_symtab = cursal.symtab;
|
||
*default_line = cursal.line;
|
||
}
|
||
}
|
||
|
||
static void
|
||
set_flags (char *arg, int *is_quoted, char **paren_pointer)
|
||
{
|
||
char *ii;
|
||
int has_if = 0;
|
||
|
||
/* 'has_if' is for the syntax:
|
||
* (gdb) break foo if (a==b)
|
||
*/
|
||
if ((ii = strstr (arg, " if ")) != NULL ||
|
||
(ii = strstr (arg, "\tif ")) != NULL ||
|
||
(ii = strstr (arg, " if\t")) != NULL ||
|
||
(ii = strstr (arg, "\tif\t")) != NULL ||
|
||
(ii = strstr (arg, " if(")) != NULL ||
|
||
(ii = strstr (arg, "\tif( ")) != NULL)
|
||
has_if = 1;
|
||
/* Temporarily zap out "if (condition)" to not
|
||
* confuse the parenthesis-checking code below.
|
||
* This is undone below. Do not change ii!!
|
||
*/
|
||
if (has_if)
|
||
{
|
||
*ii = '\0';
|
||
}
|
||
|
||
*is_quoted = (*arg
|
||
&& strchr (get_gdb_completer_quote_characters (),
|
||
*arg) != NULL);
|
||
|
||
*paren_pointer = strchr (arg, '(');
|
||
if (*paren_pointer != NULL)
|
||
*paren_pointer = strrchr (*paren_pointer, ')');
|
||
|
||
/* Now that we're safely past the paren_pointer check,
|
||
* put back " if (condition)" so outer layers can see it
|
||
*/
|
||
if (has_if)
|
||
*ii = ' ';
|
||
}
|
||
|
||
|
||
|
||
/* Decode arg of the form *PC. */
|
||
|
||
static struct symtabs_and_lines
|
||
decode_indirect (char **argptr)
|
||
{
|
||
struct symtabs_and_lines values;
|
||
CORE_ADDR pc;
|
||
|
||
(*argptr)++;
|
||
pc = parse_and_eval_address_1 (argptr);
|
||
|
||
values.sals = (struct symtab_and_line *)
|
||
xmalloc (sizeof (struct symtab_and_line));
|
||
|
||
values.nelts = 1;
|
||
values.sals[0] = find_pc_line (pc, 0);
|
||
values.sals[0].pc = pc;
|
||
values.sals[0].section = find_pc_overlay (pc);
|
||
|
||
return values;
|
||
}
|
||
|
||
|
||
|
||
/* Locate the first half of the linespec, ending in a colon, period,
|
||
or whitespace. (More or less.) Also, check to see if *ARGPTR is
|
||
enclosed in double quotes; if so, set is_quote_enclosed, advance
|
||
ARGPTR past that and zero out the trailing double quote. */
|
||
|
||
static char *
|
||
locate_first_half (char **argptr, int *is_quote_enclosed)
|
||
{
|
||
char *ii;
|
||
char *p, *p1;
|
||
int has_comma;
|
||
|
||
/* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM
|
||
and we must isolate the first half. Outer layers will call again later
|
||
for the second half.
|
||
|
||
Don't count commas that appear in argument lists of overloaded
|
||
functions, or in quoted strings. It's stupid to go to this much
|
||
trouble when the rest of the function is such an obvious roach hotel. */
|
||
ii = find_toplevel_char (*argptr, ',');
|
||
has_comma = (ii != 0);
|
||
|
||
/* Temporarily zap out second half to not
|
||
* confuse the code below.
|
||
* This is undone below. Do not change ii!!
|
||
*/
|
||
if (has_comma)
|
||
{
|
||
*ii = '\0';
|
||
}
|
||
|
||
/* Maybe arg is FILE : LINENUM or FILE : FUNCTION */
|
||
/* May also be CLASS::MEMBER, or NAMESPACE::NAME */
|
||
/* Look for ':', but ignore inside of <> */
|
||
|
||
p = *argptr;
|
||
if (p[0] == '"')
|
||
{
|
||
*is_quote_enclosed = 1;
|
||
(*argptr)++;
|
||
p++;
|
||
}
|
||
else
|
||
*is_quote_enclosed = 0;
|
||
for (; *p; p++)
|
||
{
|
||
if (p[0] == '<')
|
||
{
|
||
char *temp_end = find_template_name_end (p);
|
||
if (!temp_end)
|
||
error ("malformed template specification in command");
|
||
p = temp_end;
|
||
}
|
||
/* Check for the end of the first half of the linespec. End of line,
|
||
a tab, a double colon or the last single colon, or a space. But
|
||
if enclosed in double quotes we do not break on enclosed spaces */
|
||
if (!*p
|
||
|| p[0] == '\t'
|
||
|| ((p[0] == ':')
|
||
&& ((p[1] == ':') || (strchr (p + 1, ':') == NULL)))
|
||
|| ((p[0] == ' ') && !*is_quote_enclosed))
|
||
break;
|
||
if (p[0] == '.' && strchr (p, ':') == NULL) /* Java qualified method. */
|
||
{
|
||
/* Find the *last* '.', since the others are package qualifiers. */
|
||
for (p1 = p; *p1; p1++)
|
||
{
|
||
if (*p1 == '.')
|
||
p = p1;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
while (p[0] == ' ' || p[0] == '\t')
|
||
p++;
|
||
|
||
/* if the closing double quote was left at the end, remove it */
|
||
if (*is_quote_enclosed)
|
||
{
|
||
char *closing_quote = strchr (p - 1, '"');
|
||
if (closing_quote && closing_quote[1] == '\0')
|
||
*closing_quote = '\0';
|
||
}
|
||
|
||
/* Now that we've safely parsed the first half,
|
||
* put back ',' so outer layers can see it
|
||
*/
|
||
if (has_comma)
|
||
*ii = ',';
|
||
|
||
return p;
|
||
}
|
||
|
||
|
||
|
||
/* This handles C++ and Java compound data structures. P should point
|
||
at the first component separator, i.e. double-colon or period. */
|
||
|
||
static struct symtabs_and_lines
|
||
decode_compound (char **argptr, int funfirstline, char ***canonical,
|
||
char *saved_arg, char *p)
|
||
{
|
||
struct symtabs_and_lines values;
|
||
char *p1, *p2;
|
||
#if 0
|
||
char *q, *q1;
|
||
#endif
|
||
char *saved_arg2 = *argptr;
|
||
char *temp_end;
|
||
struct symbol *sym;
|
||
/* The symtab that SYM was found in. */
|
||
struct symtab *sym_symtab;
|
||
char *copy;
|
||
struct symbol *sym_class;
|
||
int i1;
|
||
struct symbol **sym_arr;
|
||
struct type *t;
|
||
|
||
/* First check for "global" namespace specification,
|
||
of the form "::foo". If found, skip over the colons
|
||
and jump to normal symbol processing */
|
||
if (p[0] == ':'
|
||
&& ((*argptr == p) || (p[-1] == ' ') || (p[-1] == '\t')))
|
||
saved_arg2 += 2;
|
||
|
||
/* We have what looks like a class or namespace
|
||
scope specification (A::B), possibly with many
|
||
levels of namespaces or classes (A::B::C::D).
|
||
|
||
Some versions of the HP ANSI C++ compiler (as also possibly
|
||
other compilers) generate class/function/member names with
|
||
embedded double-colons if they are inside namespaces. To
|
||
handle this, we loop a few times, considering larger and
|
||
larger prefixes of the string as though they were single
|
||
symbols. So, if the initially supplied string is
|
||
A::B::C::D::foo, we have to look up "A", then "A::B",
|
||
then "A::B::C", then "A::B::C::D", and finally
|
||
"A::B::C::D::foo" as single, monolithic symbols, because
|
||
A, B, C or D may be namespaces.
|
||
|
||
Note that namespaces can nest only inside other
|
||
namespaces, and not inside classes. So we need only
|
||
consider *prefixes* of the string; there is no need to look up
|
||
"B::C" separately as a symbol in the previous example. */
|
||
|
||
p2 = p; /* save for restart */
|
||
while (1)
|
||
{
|
||
/* Extract the class name. */
|
||
p1 = p;
|
||
while (p != *argptr && p[-1] == ' ')
|
||
--p;
|
||
copy = (char *) alloca (p - *argptr + 1);
|
||
memcpy (copy, *argptr, p - *argptr);
|
||
copy[p - *argptr] = 0;
|
||
|
||
/* Discard the class name from the arg. */
|
||
p = p1 + (p1[0] == ':' ? 2 : 1);
|
||
while (*p == ' ' || *p == '\t')
|
||
p++;
|
||
*argptr = p;
|
||
|
||
sym_class = lookup_symbol (copy, 0, STRUCT_NAMESPACE, 0,
|
||
(struct symtab **) NULL);
|
||
|
||
if (sym_class &&
|
||
(t = check_typedef (SYMBOL_TYPE (sym_class)),
|
||
(TYPE_CODE (t) == TYPE_CODE_STRUCT
|
||
|| TYPE_CODE (t) == TYPE_CODE_UNION)))
|
||
{
|
||
/* Arg token is not digits => try it as a function name
|
||
Find the next token(everything up to end or next blank). */
|
||
if (**argptr
|
||
&& strchr (get_gdb_completer_quote_characters (),
|
||
**argptr) != NULL)
|
||
{
|
||
p = skip_quoted (*argptr);
|
||
*argptr = *argptr + 1;
|
||
}
|
||
else
|
||
{
|
||
p = *argptr;
|
||
while (*p && *p != ' ' && *p != '\t' && *p != ',' && *p != ':')
|
||
p++;
|
||
}
|
||
/*
|
||
q = operator_chars (*argptr, &q1);
|
||
if (q1 - q)
|
||
{
|
||
char *opname;
|
||
char *tmp = alloca (q1 - q + 1);
|
||
memcpy (tmp, q, q1 - q);
|
||
tmp[q1 - q] = '\0';
|
||
opname = cplus_mangle_opname (tmp, DMGL_ANSI);
|
||
if (opname == NULL)
|
||
{
|
||
cplusplus_error (saved_arg, "no mangling for \"%s\"\n", tmp);
|
||
}
|
||
copy = (char*) alloca (3 + strlen(opname));
|
||
sprintf (copy, "__%s", opname);
|
||
p = q1;
|
||
}
|
||
else
|
||
*/
|
||
{
|
||
copy = (char *) alloca (p - *argptr + 1);
|
||
memcpy (copy, *argptr, p - *argptr);
|
||
copy[p - *argptr] = '\0';
|
||
if (p != *argptr
|
||
&& copy[p - *argptr - 1]
|
||
&& strchr (get_gdb_completer_quote_characters (),
|
||
copy[p - *argptr - 1]) != NULL)
|
||
copy[p - *argptr - 1] = '\0';
|
||
}
|
||
|
||
/* no line number may be specified */
|
||
while (*p == ' ' || *p == '\t')
|
||
p++;
|
||
*argptr = p;
|
||
|
||
sym = 0;
|
||
i1 = 0; /* counter for the symbol array */
|
||
sym_arr = (struct symbol **) alloca (total_number_of_methods (t)
|
||
* sizeof (struct symbol *));
|
||
|
||
if (destructor_name_p (copy, t))
|
||
{
|
||
/* Destructors are a special case. */
|
||
int m_index, f_index;
|
||
|
||
if (get_destructor_fn_field (t, &m_index, &f_index))
|
||
{
|
||
struct fn_field *f = TYPE_FN_FIELDLIST1 (t, m_index);
|
||
|
||
sym_arr[i1] =
|
||
lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f, f_index),
|
||
NULL, VAR_NAMESPACE, (int *) NULL,
|
||
(struct symtab **) NULL);
|
||
if (sym_arr[i1])
|
||
i1++;
|
||
}
|
||
}
|
||
else
|
||
i1 = find_methods (t, copy, sym_arr);
|
||
if (i1 == 1)
|
||
{
|
||
/* There is exactly one field with that name. */
|
||
sym = sym_arr[0];
|
||
|
||
if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK)
|
||
{
|
||
values.sals = (struct symtab_and_line *)
|
||
xmalloc (sizeof (struct symtab_and_line));
|
||
values.nelts = 1;
|
||
values.sals[0] = find_function_start_sal (sym,
|
||
funfirstline);
|
||
}
|
||
else
|
||
{
|
||
values.nelts = 0;
|
||
}
|
||
return values;
|
||
}
|
||
if (i1 > 0)
|
||
{
|
||
/* There is more than one field with that name
|
||
(overloaded). Ask the user which one to use. */
|
||
return decode_line_2 (sym_arr, i1, funfirstline, canonical);
|
||
}
|
||
else
|
||
{
|
||
char *tmp;
|
||
|
||
if (is_operator_name (copy))
|
||
{
|
||
tmp = (char *) alloca (strlen (copy + 3) + 9);
|
||
strcpy (tmp, "operator ");
|
||
strcat (tmp, copy + 3);
|
||
}
|
||
else
|
||
tmp = copy;
|
||
if (tmp[0] == '~')
|
||
cplusplus_error (saved_arg,
|
||
"the class `%s' does not have destructor defined\n",
|
||
SYMBOL_SOURCE_NAME (sym_class));
|
||
else
|
||
cplusplus_error (saved_arg,
|
||
"the class %s does not have any method named %s\n",
|
||
SYMBOL_SOURCE_NAME (sym_class), tmp);
|
||
}
|
||
}
|
||
|
||
/* Move pointer up to next possible class/namespace token */
|
||
p = p2 + 1; /* restart with old value +1 */
|
||
/* Move pointer ahead to next double-colon */
|
||
while (*p && (p[0] != ' ') && (p[0] != '\t') && (p[0] != '\''))
|
||
{
|
||
if (p[0] == '<')
|
||
{
|
||
temp_end = find_template_name_end (p);
|
||
if (!temp_end)
|
||
error ("malformed template specification in command");
|
||
p = temp_end;
|
||
}
|
||
else if ((p[0] == ':') && (p[1] == ':'))
|
||
break; /* found double-colon */
|
||
else
|
||
p++;
|
||
}
|
||
|
||
if (*p != ':')
|
||
break; /* out of the while (1) */
|
||
|
||
p2 = p; /* save restart for next time around */
|
||
*argptr = saved_arg2; /* restore argptr */
|
||
} /* while (1) */
|
||
|
||
/* Last chance attempt -- check entire name as a symbol */
|
||
/* Use "copy" in preparation for jumping out of this block,
|
||
to be consistent with usage following the jump target */
|
||
copy = (char *) alloca (p - saved_arg2 + 1);
|
||
memcpy (copy, saved_arg2, p - saved_arg2);
|
||
/* Note: if is_quoted should be true, we snuff out quote here anyway */
|
||
copy[p - saved_arg2] = '\000';
|
||
/* Set argptr to skip over the name */
|
||
*argptr = (*p == '\'') ? p + 1 : p;
|
||
/* Look up entire name */
|
||
sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab);
|
||
if (sym)
|
||
return symbol_found (funfirstline, canonical, copy, sym,
|
||
NULL, sym_symtab);
|
||
|
||
/* Couldn't find any interpretation as classes/namespaces, so give up */
|
||
/* The quotes are important if copy is empty. */
|
||
cplusplus_error (saved_arg,
|
||
"Can't find member of namespace, class, struct, or union named \"%s\"\n",
|
||
copy);
|
||
}
|
||
|
||
|
||
|
||
/* Return the symtab associated to the filename given by the substring
|
||
of *ARGPTR ending at P, and advance ARGPTR past that filename. */
|
||
|
||
static struct symtab *
|
||
symtab_from_filename (char **argptr, char *p, int is_quote_enclosed)
|
||
{
|
||
char *p1;
|
||
char *copy;
|
||
struct symtab *s;
|
||
|
||
p1 = p;
|
||
while (p != *argptr && p[-1] == ' ')
|
||
--p;
|
||
if ((*p == '"') && is_quote_enclosed)
|
||
--p;
|
||
copy = (char *) alloca (p - *argptr + 1);
|
||
memcpy (copy, *argptr, p - *argptr);
|
||
/* It may have the ending quote right after the file name */
|
||
if (is_quote_enclosed && copy[p - *argptr - 1] == '"')
|
||
copy[p - *argptr - 1] = 0;
|
||
else
|
||
copy[p - *argptr] = 0;
|
||
|
||
/* Find that file's data. */
|
||
s = lookup_symtab (copy);
|
||
if (s == 0)
|
||
{
|
||
if (!have_full_symbols () && !have_partial_symbols ())
|
||
error ("No symbol table is loaded. Use the \"file\" command.");
|
||
error ("No source file named %s.", copy);
|
||
}
|
||
|
||
/* Discard the file name from the arg. */
|
||
p = p1 + 1;
|
||
while (*p == ' ' || *p == '\t')
|
||
p++;
|
||
*argptr = p;
|
||
|
||
return s;
|
||
}
|
||
|
||
|
||
|
||
/* This decodes a line where the argument is all digits (possibly
|
||
preceded by a sign). Q should point to the end of those digits;
|
||
the other arguments are as usual. */
|
||
|
||
static struct symtabs_and_lines
|
||
decode_all_digits (char **argptr, struct symtab *default_symtab,
|
||
int default_line, char ***canonical,
|
||
struct symtab *s, char *q)
|
||
|
||
{
|
||
struct symtabs_and_lines values;
|
||
struct symtab_and_line val;
|
||
|
||
enum sign
|
||
{
|
||
none, plus, minus
|
||
}
|
||
sign = none;
|
||
|
||
/* We might need a canonical line spec if no file was specified. */
|
||
int need_canonical = (s == 0) ? 1 : 0;
|
||
|
||
init_sal (&val);
|
||
|
||
/* This is where we need to make sure that we have good defaults.
|
||
We must guarantee that this section of code is never executed
|
||
when we are called with just a function name, since
|
||
set_default_source_symtab_and_line uses
|
||
select_source_symtab that calls us with such an argument */
|
||
|
||
if (s == 0 && default_symtab == 0)
|
||
{
|
||
/* Make sure we have at least a default source file. */
|
||
set_default_source_symtab_and_line ();
|
||
initialize_defaults (&default_symtab, &default_line);
|
||
}
|
||
|
||
if (**argptr == '+')
|
||
sign = plus, (*argptr)++;
|
||
else if (**argptr == '-')
|
||
sign = minus, (*argptr)++;
|
||
val.line = atoi (*argptr);
|
||
switch (sign)
|
||
{
|
||
case plus:
|
||
if (q == *argptr)
|
||
val.line = 5;
|
||
if (s == 0)
|
||
val.line = default_line + val.line;
|
||
break;
|
||
case minus:
|
||
if (q == *argptr)
|
||
val.line = 15;
|
||
if (s == 0)
|
||
val.line = default_line - val.line;
|
||
else
|
||
val.line = 1;
|
||
break;
|
||
case none:
|
||
break; /* No need to adjust val.line. */
|
||
}
|
||
|
||
while (*q == ' ' || *q == '\t')
|
||
q++;
|
||
*argptr = q;
|
||
if (s == 0)
|
||
s = default_symtab;
|
||
|
||
/* It is possible that this source file has more than one symtab,
|
||
and that the new line number specification has moved us from the
|
||
default (in s) to a new one. */
|
||
val.symtab = find_line_symtab (s, val.line, NULL, NULL);
|
||
if (val.symtab == 0)
|
||
val.symtab = s;
|
||
|
||
val.pc = 0;
|
||
values.sals = (struct symtab_and_line *)
|
||
xmalloc (sizeof (struct symtab_and_line));
|
||
values.sals[0] = val;
|
||
values.nelts = 1;
|
||
if (need_canonical)
|
||
build_canonical_line_spec (values.sals, NULL, canonical);
|
||
return values;
|
||
}
|
||
|
||
|
||
|
||
/* Now come some functions that are called from multiple places within
|
||
decode_line_1. */
|
||
|
||
/* We've found a symbol SYM to associate with our linespec; build a
|
||
corresponding struct symtabs_and_lines. */
|
||
|
||
static struct symtabs_and_lines
|
||
symbol_found (int funfirstline, char ***canonical, char *copy,
|
||
struct symbol *sym, struct symtab *s,
|
||
struct symtab *sym_symtab)
|
||
{
|
||
struct symtabs_and_lines values;
|
||
|
||
if (SYMBOL_CLASS (sym) == LOC_BLOCK)
|
||
{
|
||
/* Arg is the name of a function */
|
||
values.sals = (struct symtab_and_line *)
|
||
xmalloc (sizeof (struct symtab_and_line));
|
||
values.sals[0] = find_function_start_sal (sym, funfirstline);
|
||
values.nelts = 1;
|
||
|
||
/* Don't use the SYMBOL_LINE; if used at all it points to
|
||
the line containing the parameters or thereabouts, not
|
||
the first line of code. */
|
||
|
||
/* We might need a canonical line spec if it is a static
|
||
function. */
|
||
if (s == 0)
|
||
{
|
||
struct blockvector *bv = BLOCKVECTOR (sym_symtab);
|
||
struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
|
||
if (lookup_block_symbol (b, copy, NULL, VAR_NAMESPACE) != NULL)
|
||
build_canonical_line_spec (values.sals, copy, canonical);
|
||
}
|
||
return values;
|
||
}
|
||
else
|
||
{
|
||
if (funfirstline)
|
||
error ("\"%s\" is not a function", copy);
|
||
else if (SYMBOL_LINE (sym) != 0)
|
||
{
|
||
/* We know its line number. */
|
||
values.sals = (struct symtab_and_line *)
|
||
xmalloc (sizeof (struct symtab_and_line));
|
||
values.nelts = 1;
|
||
memset (&values.sals[0], 0, sizeof (values.sals[0]));
|
||
values.sals[0].symtab = sym_symtab;
|
||
values.sals[0].line = SYMBOL_LINE (sym);
|
||
return values;
|
||
}
|
||
else
|
||
/* This can happen if it is compiled with a compiler which doesn't
|
||
put out line numbers for variables. */
|
||
/* FIXME: Shouldn't we just set .line and .symtab to zero
|
||
and return? For example, "info line foo" could print
|
||
the address. */
|
||
error ("Line number not known for symbol \"%s\"", copy);
|
||
}
|
||
}
|
||
|
||
/* We've found a minimal symbol MSYMBOL to associate with our
|
||
linespec; build a corresponding struct symtabs_and_lines. */
|
||
|
||
static struct symtabs_and_lines
|
||
minsym_found (int funfirstline, struct minimal_symbol *msymbol)
|
||
{
|
||
struct symtabs_and_lines values;
|
||
|
||
values.sals = (struct symtab_and_line *)
|
||
xmalloc (sizeof (struct symtab_and_line));
|
||
values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol),
|
||
(struct sec *) 0, 0);
|
||
values.sals[0].section = SYMBOL_BFD_SECTION (msymbol);
|
||
if (funfirstline)
|
||
{
|
||
values.sals[0].pc += FUNCTION_START_OFFSET;
|
||
values.sals[0].pc = SKIP_PROLOGUE (values.sals[0].pc);
|
||
}
|
||
values.nelts = 1;
|
||
return values;
|
||
}
|