X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Flinespec.c;h=0386a7511a96acb3d62cf0ba789c0d090ffd0277;hb=ebef2de3771e8ce665b4f1952040990b8aaf7f34;hp=15ccab000fa06d3875e5ca47c385859ed102fa23;hpb=3121eff097e886c1c47a75abffe574d51adc3958;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/linespec.c b/gdb/linespec.c index 15ccab000f..0386a7511a 100644 --- a/gdb/linespec.c +++ b/gdb/linespec.c @@ -26,15 +26,12 @@ #include "command.h" #include "symfile.h" #include "objfiles.h" +#include "source.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 *); +#include "parser-defs.h" /* We share this one with symtab.c, but it is not exported widely. */ @@ -42,7 +39,24 @@ 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 void initialize_defaults (struct symtab **default_symtab, + int *default_line); + +static void set_flags (char *arg, int *is_quoted, char **paren_pointer); + +static struct symtabs_and_lines decode_indirect (char **argptr); + +static char *locate_first_half (char **argptr, int *is_quote_enclosed); + +static struct symtabs_and_lines decode_compound (char **argptr, + int funfirstline, + char ***canonical, + char *saved_arg, + char *p); + +static NORETURN void cplusplus_error (const char *name, + const char *fmt, ...) + ATTR_NORETURN ATTR_FORMAT (printf, 2, 3); static int total_number_of_methods (struct type *type); @@ -56,13 +70,28 @@ static char *find_toplevel_char (char *s, char c); static struct symtabs_and_lines decode_line_2 (struct symbol *[], int, int, char ***); +static struct symtab *symtab_from_filename (char **argptr, + char *p, int is_quote_enclosed); + +static struct +symtabs_and_lines symbol_found (int funfirstline, + char ***canonical, + char *copy, + struct symbol *sym, + struct symtab *s, + struct symtab *sym_symtab); + +static struct +symtabs_and_lines minsym_found (int funfirstline, + struct minimal_symbol *msymbol); + /* 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 +static NORETURN void cplusplus_error (const char *name, const char *fmt, ...) { struct ui_file *tmp_stream; @@ -130,6 +159,7 @@ find_methods (struct type *t, char *name, struct symbol **sym_arr) (struct symtab **) NULL))) { int method_counter; + int name_len = strlen (name); CHECK_TYPEDEF (t); @@ -202,7 +232,9 @@ find_methods (struct type *t, char *name, struct symbol **sym_arr) */ } } - else if (strcmp_iw (class_name, name) == 0) + else if (strncmp (class_name, name, name_len) == 0 + && (class_name[name_len] == '\0' + || class_name[name_len] == '<')) { /* For GCC 3.x and stabs, constructors and destructors have names like __base_ctor and __complete_dtor. Check the physname for now @@ -298,7 +330,9 @@ build_canonical_line_spec (struct symtab_and_line *sal, char *symname, /* 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. */ + strings. Also, ignore the char within a template name, like a ',' + within foo. */ + static char * find_toplevel_char (char *s, char c) { @@ -321,9 +355,9 @@ find_toplevel_char (char *s, char c) return scan; else if (*scan == '"' || *scan == '\'') quoted = *scan; - else if (*scan == '(') + else if (*scan == '(' || *scan == '<') depth++; - else if (*scan == ')' && depth > 0) + else if ((*scan == ')' || *scan == '>') && depth > 0) depth--; } @@ -365,8 +399,8 @@ decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline, 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]); + 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); @@ -508,456 +542,69 @@ decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, { 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; + char *p; + char *q; + struct symtab *s = NULL; - register struct symbol *sym; + struct symbol *sym; /* The symtab that SYM was found in. */ struct symtab *sym_symtab; - register CORE_ADDR pc; - register struct minimal_symbol *msymbol; + struct minimal_symbol *msymbol; char *copy; - struct symbol *sym_class; - int i1; + /* 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; - 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 */ + init_sal (&val); /* initialize to zeroes */ /* Defaults have defaults. */ - if (default_symtab == 0) - { - default_symtab = current_source_symtab; - default_line = current_source_line; - } - + initialize_defaults (&default_symtab, &default_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'; - } + return decode_indirect (argptr); /* Set various flags. - * 'has_parens' is important for overload checking, where + * 'paren_pointer' 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'; - } + set_flags (*argptr, &is_quoted, &paren_pointer); - /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */ - /* May also be CLASS::MEMBER, or NAMESPACE::NAME */ - /* Look for ':', but ignore inside of <> */ + /* Check to see if it's a multipart linespec (with colons or + periods). */ - 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++; + /* Locate the end of the first half of the linespec. */ - /* 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'; - } + p = locate_first_half (argptr, &is_quote_enclosed); - /* Now that we've safely parsed the first half, - * put back ',' so outer layers can see it - */ - if (has_comma) - *ii = ','; + /* Does it look like there actually were two parts? */ - if ((p[0] == ':' || p[0] == '.') && !has_parens) + if ((p[0] == ':' || p[0] == '.') && paren_pointer == NULL) { - /* 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++ */ - + + /* Is it a C++ or Java compound data structure? */ - /* 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; - } + if (p[0] == '.' || p[1] == ':') + return decode_compound (argptr, funfirstline, canonical, + saved_arg, p); - /* 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); - } + /* No, the first part is a filename; set s to be that file's + symtab. Also, move argptr past the filename. */ - /* Discard the file name from the arg. */ - p = p1 + 1; - while (*p == ' ' || *p == '\t') - p++; - *argptr = p; + s = symtab_from_filename (argptr, p, is_quote_enclosed); } #if 0 /* No one really seems to know why this was added. It certainly @@ -985,12 +632,9 @@ decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, 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; + return symbol_found (funfirstline, canonical, copy, sym, + NULL, sym_symtab); } /* Otherwise fall out from here and go to file/line spec processing, etc. */ @@ -1023,13 +667,14 @@ decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, /* 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 */ + set_default_source_symtab_and_line uses + select_source_symtab that 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; + /* Make sure we have at least a default source file. */ + set_default_source_symtab_and_line (); + initialize_defaults (&default_symtab, &default_line); } if (**argptr == '+') @@ -1091,9 +736,9 @@ decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, if (p[-1] != '\'') error ("Unmatched single quote."); } - else if (has_parens) + else if (paren_pointer != NULL) { - p = pp + 1; + p = paren_pointer + 1; } else { @@ -1145,19 +790,16 @@ decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, 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. */ + /* Symbol was found --> jump to normal symbol processing. */ if (sym) - goto symbol_found; + 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) - goto minimal_symbol_found; + return minsym_found (funfirstline, msymbol); /* Not a user variable or function -- must be convenience variable */ need_canonical = (s == 0) ? 1 : 0; @@ -1187,87 +829,600 @@ decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, sym = lookup_symbol (copy, (s ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) - : get_selected_block ()), + : get_selected_block (0)), 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) + 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) { - 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; + /* 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; + } +} - /* 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. */ +static void +set_flags (char *arg, int *is_quoted, char **paren_pointer) +{ + char *ii; + int has_if = 0; - /* We might need a canonical line spec if it is a static - function. */ - if (s == 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++) { - 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); + if (*p1 == '.') + p = p1; } - return values; + break; } - else + } + 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))) { - if (funfirstline) - error ("\"%s\" is not a function", copy); - else if (SYMBOL_LINE (sym) != 0) + /* 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)) { - /* 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); + /* 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 - /* 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); + { + 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); } - msymbol = lookup_minimal_symbol (copy, NULL, NULL); + /* Discard the file name from the arg. */ + p = p1 + 1; + while (*p == ' ' || *p == '\t') + p++; + *argptr = p; -minimal_symbol_found: /* We also jump here from the case for variables - that begin with '$' */ + return s; +} - if (msymbol != NULL) + + + +/* 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_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol), - (struct sec *) 0, 0); - values.sals[0].section = SYMBOL_BFD_SECTION (msymbol); - if (funfirstline) + 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) { - values.sals[0].pc += FUNCTION_START_OFFSET; - values.sals[0].pc = SKIP_PROLOGUE (values.sals[0].pc); + 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); } - values.nelts = 1; 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); + } +} - if (!have_full_symbols () && - !have_partial_symbols () && !have_minimal_symbols ()) - error ("No symbol table is loaded. Use the \"file\" command."); +/* We've found a minimal symbol MSYMBOL to associate with our + linespec; build a corresponding struct symtabs_and_lines. */ - error ("Function \"%s\" not defined.", copy); - return values; /* for lint */ +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; }