| /* Parser for linespec for the GNU debugger, GDB. |
| Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
| 1996, 1997, 1998, 1999, 2000, 2001 |
| Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include "defs.h" |
| #include "symtab.h" |
| #include "frame.h" |
| #include "command.h" |
| #include "symfile.h" |
| #include "objfiles.h" |
| #include "demangle.h" |
| #include "value.h" |
| #include "completer.h" |
| #include "cp-abi.h" |
| |
| /* Prototype for one function in parser-defs.h, |
| instead of including that entire file. */ |
| |
| extern char *find_template_name_end (char *); |
| |
| /* We share this one with symtab.c, but it is not exported widely. */ |
| |
| extern char *operator_chars (char *, char **); |
| |
| /* Prototypes for local functions */ |
| |
| static void cplusplus_error (const char *name, const char *fmt, ...) ATTR_FORMAT (printf, 2, 3); |
| |
| static int total_number_of_methods (struct type *type); |
| |
| static int find_methods (struct type *, char *, struct symbol **); |
| |
| static void build_canonical_line_spec (struct symtab_and_line *, |
| char *, char ***); |
| |
| static char *find_toplevel_char (char *s, char c); |
| |
| static struct symtabs_and_lines decode_line_2 (struct symbol *[], |
| int, int, char ***); |
| |
| /* Helper functions. */ |
| |
| /* Issue a helpful hint on using the command completion feature on |
| single quoted demangled C++ symbols as part of the completion |
| error. */ |
| |
| static void |
| cplusplus_error (const char *name, const char *fmt, ...) |
| { |
| struct ui_file *tmp_stream; |
| tmp_stream = mem_fileopen (); |
| make_cleanup_ui_file_delete (tmp_stream); |
| |
| { |
| va_list args; |
| va_start (args, fmt); |
| vfprintf_unfiltered (tmp_stream, fmt, args); |
| va_end (args); |
| } |
| |
| while (*name == '\'') |
| name++; |
| fprintf_unfiltered (tmp_stream, |
| ("Hint: try '%s<TAB> or '%s<ESC-?>\n" |
| "(Note leading single quote.)"), |
| name, name); |
| error_stream (tmp_stream); |
| } |
| |
| /* Return the number of methods described for TYPE, including the |
| methods from types it derives from. This can't be done in the symbol |
| reader because the type of the baseclass might still be stubbed |
| when the definition of the derived class is parsed. */ |
| |
| static int |
| total_number_of_methods (struct type *type) |
| { |
| int n; |
| int count; |
| |
| CHECK_TYPEDEF (type); |
| if (TYPE_CPLUS_SPECIFIC (type) == NULL) |
| return 0; |
| count = TYPE_NFN_FIELDS_TOTAL (type); |
| |
| for (n = 0; n < TYPE_N_BASECLASSES (type); n++) |
| count += total_number_of_methods (TYPE_BASECLASS (type, n)); |
| |
| return count; |
| } |
| |
| /* Recursive helper function for decode_line_1. |
| Look for methods named NAME in type T. |
| Return number of matches. |
| Put matches in SYM_ARR, which should have been allocated with |
| a size of total_number_of_methods (T) * sizeof (struct symbol *). |
| Note that this function is g++ specific. */ |
| |
| static int |
| find_methods (struct type *t, char *name, struct symbol **sym_arr) |
| { |
| int i1 = 0; |
| int ibase; |
| char *class_name = type_name_no_tag (t); |
| |
| /* Ignore this class if it doesn't have a name. This is ugly, but |
| unless we figure out how to get the physname without the name of |
| the class, then the loop can't do any good. */ |
| if (class_name |
| && (lookup_symbol (class_name, (struct block *) NULL, |
| STRUCT_NAMESPACE, (int *) NULL, |
| (struct symtab **) NULL))) |
| { |
| int method_counter; |
| |
| CHECK_TYPEDEF (t); |
| |
| /* Loop over each method name. At this level, all overloads of a name |
| are counted as a single name. There is an inner loop which loops over |
| each overload. */ |
| |
| for (method_counter = TYPE_NFN_FIELDS (t) - 1; |
| method_counter >= 0; |
| --method_counter) |
| { |
| int field_counter; |
| char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter); |
| char dem_opname[64]; |
| |
| if (strncmp (method_name, "__", 2) == 0 || |
| strncmp (method_name, "op", 2) == 0 || |
| strncmp (method_name, "type", 4) == 0) |
| { |
| if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI)) |
| method_name = dem_opname; |
| else if (cplus_demangle_opname (method_name, dem_opname, 0)) |
| method_name = dem_opname; |
| } |
| |
| if (strcmp_iw (name, method_name) == 0) |
| /* Find all the overloaded methods with that name. */ |
| for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; |
| field_counter >= 0; |
| --field_counter) |
| { |
| struct fn_field *f; |
| char *phys_name; |
| |
| f = TYPE_FN_FIELDLIST1 (t, method_counter); |
| |
| if (TYPE_FN_FIELD_STUB (f, field_counter)) |
| { |
| char *tmp_name; |
| |
| tmp_name = gdb_mangle_name (t, |
| method_counter, |
| field_counter); |
| phys_name = alloca (strlen (tmp_name) + 1); |
| strcpy (phys_name, tmp_name); |
| xfree (tmp_name); |
| } |
| else |
| phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); |
| |
| /* Destructor is handled by caller, dont add it to the list */ |
| if (is_destructor_name (phys_name) != 0) |
| continue; |
| |
| sym_arr[i1] = lookup_symbol (phys_name, |
| NULL, VAR_NAMESPACE, |
| (int *) NULL, |
| (struct symtab **) NULL); |
| if (sym_arr[i1]) |
| i1++; |
| else |
| { |
| /* This error message gets printed, but the method |
| still seems to be found |
| fputs_filtered("(Cannot find method ", gdb_stdout); |
| fprintf_symbol_filtered (gdb_stdout, phys_name, |
| language_cplus, |
| DMGL_PARAMS | DMGL_ANSI); |
| fputs_filtered(" - possibly inlined.)\n", gdb_stdout); |
| */ |
| } |
| } |
| else if (strcmp_iw (class_name, name) == 0) |
| { |
| /* For GCC 3.x and stabs, constructors and destructors have names |
| like __base_ctor and __complete_dtor. Check the physname for now |
| if we're looking for a constructor. */ |
| for (field_counter |
| = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; |
| field_counter >= 0; |
| --field_counter) |
| { |
| struct fn_field *f; |
| char *phys_name; |
| |
| f = TYPE_FN_FIELDLIST1 (t, method_counter); |
| |
| /* GCC 3.x will never produce stabs stub methods, so we don't need |
| to handle this case. */ |
| if (TYPE_FN_FIELD_STUB (f, field_counter)) |
| continue; |
| phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); |
| if (! is_constructor_name (phys_name)) |
| continue; |
| |
| /* If this method is actually defined, include it in the |
| list. */ |
| sym_arr[i1] = lookup_symbol (phys_name, |
| NULL, VAR_NAMESPACE, |
| (int *) NULL, |
| (struct symtab **) NULL); |
| if (sym_arr[i1]) |
| i1++; |
| } |
| } |
| } |
| } |
| |
| /* Only search baseclasses if there is no match yet, since names in |
| derived classes override those in baseclasses. |
| |
| FIXME: The above is not true; it is only true of member functions |
| if they have the same number of arguments (??? - section 13.1 of the |
| ARM says the function members are not in the same scope but doesn't |
| really spell out the rules in a way I understand. In any case, if |
| the number of arguments differ this is a case in which we can overload |
| rather than hiding without any problem, and gcc 2.4.5 does overload |
| rather than hiding in this case). */ |
| |
| if (i1 == 0) |
| for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++) |
| i1 += find_methods (TYPE_BASECLASS (t, ibase), name, sym_arr + i1); |
| |
| return i1; |
| } |
| |
| /* Helper function for decode_line_1. |
| Build a canonical line spec in CANONICAL if it is non-NULL and if |
| the SAL has a symtab. |
| If SYMNAME is non-NULL the canonical line spec is `filename:symname'. |
| If SYMNAME is NULL the line number from SAL is used and the canonical |
| line spec is `filename:linenum'. */ |
| |
| static void |
| build_canonical_line_spec (struct symtab_and_line *sal, char *symname, |
| char ***canonical) |
| { |
| char **canonical_arr; |
| char *canonical_name; |
| char *filename; |
| struct symtab *s = sal->symtab; |
| |
| if (s == (struct symtab *) NULL |
| || s->filename == (char *) NULL |
| || canonical == (char ***) NULL) |
| return; |
| |
| canonical_arr = (char **) xmalloc (sizeof (char *)); |
| *canonical = canonical_arr; |
| |
| filename = s->filename; |
| if (symname != NULL) |
| { |
| canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2); |
| sprintf (canonical_name, "%s:%s", filename, symname); |
| } |
| else |
| { |
| canonical_name = xmalloc (strlen (filename) + 30); |
| sprintf (canonical_name, "%s:%d", filename, sal->line); |
| } |
| canonical_arr[0] = canonical_name; |
| } |
| |
| |
| |
| /* Find an instance of the character C in the string S that is outside |
| of all parenthesis pairs, single-quoted strings, and double-quoted |
| strings. */ |
| static char * |
| find_toplevel_char (char *s, char c) |
| { |
| int quoted = 0; /* zero if we're not in quotes; |
| '"' if we're in a double-quoted string; |
| '\'' if we're in a single-quoted string. */ |
| int depth = 0; /* number of unclosed parens we've seen */ |
| char *scan; |
| |
| for (scan = s; *scan; scan++) |
| { |
| if (quoted) |
| { |
| if (*scan == quoted) |
| quoted = 0; |
| else if (*scan == '\\' && *(scan + 1)) |
| scan++; |
| } |
| else if (*scan == c && ! quoted && depth == 0) |
| return scan; |
| else if (*scan == '"' || *scan == '\'') |
| quoted = *scan; |
| else if (*scan == '(') |
| depth++; |
| else if (*scan == ')' && depth > 0) |
| depth--; |
| } |
| |
| return 0; |
| } |
| |
| /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to |
| operate on (ask user if necessary). |
| If CANONICAL is non-NULL return a corresponding array of mangled names |
| as canonical line specs there. */ |
| |
| static struct symtabs_and_lines |
| decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline, |
| char ***canonical) |
| { |
| struct symtabs_and_lines values, return_values; |
| char *args, *arg1; |
| int i; |
| char *prompt; |
| char *symname; |
| struct cleanup *old_chain; |
| char **canonical_arr = (char **) NULL; |
| |
| values.sals = (struct symtab_and_line *) |
| alloca (nelts * sizeof (struct symtab_and_line)); |
| return_values.sals = (struct symtab_and_line *) |
| xmalloc (nelts * sizeof (struct symtab_and_line)); |
| old_chain = make_cleanup (xfree, return_values.sals); |
| |
| if (canonical) |
| { |
| canonical_arr = (char **) xmalloc (nelts * sizeof (char *)); |
| make_cleanup (xfree, canonical_arr); |
| memset (canonical_arr, 0, nelts * sizeof (char *)); |
| *canonical = canonical_arr; |
| } |
| |
| i = 0; |
| printf_unfiltered ("[0] cancel\n[1] all\n"); |
| while (i < nelts) |
| { |
| INIT_SAL (&return_values.sals[i]); /* initialize to zeroes */ |
| INIT_SAL (&values.sals[i]); |
| 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", |
| (i + 2), |
| 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; |
| register char *p, *p1; |
| char *q, *pp, *ii, *p2; |
| #if 0 |
| char *q1; |
| #endif |
| register struct symtab *s; |
| |
| register struct symbol *sym; |
| /* The symtab that SYM was found in. */ |
| struct symtab *sym_symtab; |
| |
| register CORE_ADDR pc; |
| register struct minimal_symbol *msymbol; |
| char *copy; |
| struct symbol *sym_class; |
| int i1; |
| int is_quoted; |
| int is_quote_enclosed; |
| int has_parens; |
| int has_if = 0; |
| int has_comma = 0; |
| struct symbol **sym_arr; |
| struct type *t; |
| char *saved_arg = *argptr; |
| extern char *gdb_completer_quote_characters; |
| |
| INIT_SAL (&val); /* initialize to zeroes */ |
| |
| /* Defaults have defaults. */ |
| |
| if (default_symtab == 0) |
| { |
| default_symtab = current_source_symtab; |
| default_line = current_source_line; |
| } |
| |
| /* See if arg is *PC */ |
| |
| if (**argptr == '*') |
| { |
| (*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; |
| } |
| |
| /* 'has_if' is for the syntax: |
| * (gdb) break foo if (a==b) |
| */ |
| if ((ii = strstr (*argptr, " if ")) != NULL || |
| (ii = strstr (*argptr, "\tif ")) != NULL || |
| (ii = strstr (*argptr, " if\t")) != NULL || |
| (ii = strstr (*argptr, "\tif\t")) != NULL || |
| (ii = strstr (*argptr, " if(")) != NULL || |
| (ii = strstr (*argptr, "\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'; |
| } |
| |
| /* Set various flags. |
| * 'has_parens' is important for overload checking, where |
| * we allow things like: |
| * (gdb) break c::f(int) |
| */ |
| |
| /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */ |
| |
| is_quoted = (**argptr |
| && strchr (get_gdb_completer_quote_characters (), |
| **argptr) != NULL); |
| |
| has_parens = ((pp = strchr (*argptr, '(')) != NULL |
| && (pp = strrchr (pp, ')')) != NULL); |
| |
| /* Now that we're safely past the has_parens check, |
| * put back " if (condition)" so outer layers can see it |
| */ |
| if (has_if) |
| *ii = ' '; |
| |
| /* 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 <> */ |
| |
| s = NULL; |
| 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 = ','; |
| |
| if ((p[0] == ':' || p[0] == '.') && !has_parens) |
| { |
| /* C++ */ |
| /* ... or Java */ |
| if (is_quoted) |
| *argptr = *argptr + 1; |
| if (p[0] == '.' || p[1] == ':') |
| { |
| char *saved_arg2 = *argptr; |
| char *temp_end; |
| /* 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); |
| s = (struct symtab *) 0; |
| /* Prepare to jump: restore the " if (condition)" so outer layers see it */ |
| /* Symbol was found --> jump to normal symbol processing. |
| Code following "symbol_found" expects "copy" to have the |
| symbol name, "sym" to have the symbol pointer, "s" to be |
| a specified file's symtab, and sym_symtab to be the symbol's |
| symtab. */ |
| /* By jumping there we avoid falling through the FILE:LINE and |
| FILE:FUNC processing stuff below */ |
| if (sym) |
| goto symbol_found; |
| |
| /* 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); |
| } |
| /* end of C++ */ |
| |
| |
| /* Extract the file name. */ |
| p1 = p; |
| while (p != *argptr && p[-1] == ' ') |
| --p; |
| if ((*p == '"') && is_quote_enclosed) |
| --p; |
| copy = (char *) alloca (p - *argptr + 1); |
| if ((**argptr == '"') && is_quote_enclosed) |
| { |
| memcpy (copy, *argptr + 1, p - *argptr - 1); |
| /* It may have the ending quote right after the file name */ |
| if (copy[p - *argptr - 2] == '"') |
| copy[p - *argptr - 2] = 0; |
| else |
| copy[p - *argptr - 1] = 0; |
| } |
| else |
| { |
| memcpy (copy, *argptr, p - *argptr); |
| 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; |
| } |
| #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) |
| { |
| /* Yes, we have a symbol; jump to symbol processing */ |
| /* Code after symbol_found expects S, SYM_SYMTAB, SYM, |
| and COPY to be set correctly */ |
| *argptr = (*p == '\'') ? p + 1 : p; |
| s = (struct symtab *) 0; |
| goto symbol_found; |
| } |
| /* 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. */ |
| 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; |
| |
| /* 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 |
| select_source_symtab calls us with such an argument */ |
| |
| if (s == 0 && default_symtab == 0) |
| { |
| select_source_symtab (0); |
| default_symtab = current_source_symtab; |
| default_line = current_source_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; |
| } |
| |
| /* 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 (has_parens) |
| { |
| p = pp + 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. |
| Code following "symbol_found" expects "copy" to have the |
| symbol name, "sym" to have the symbol pointer, "s" to be |
| a specified file's symtab, and sym_symtab to be the symbol's |
| symtab. */ |
| if (sym) |
| goto symbol_found; |
| |
| /* 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) |
| goto minimal_symbol_found; |
| |
| /* 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 ()), |
| VAR_NAMESPACE, 0, &sym_symtab); |
| |
| symbol_found: /* We also jump here from inside the C++ class/namespace |
| code on finding a symbol of the form "A::B::C" */ |
| |
| if (sym != NULL) |
| { |
| 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, 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); |
| } |
| } |
| |
| msymbol = lookup_minimal_symbol (copy, NULL, NULL); |
| |
| minimal_symbol_found: /* We also jump here from the case for variables |
| that begin with '$' */ |
| |
| if (msymbol != NULL) |
| { |
| 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; |
| } |
| |
| 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 */ |
| } |