-/* Objective C language support routines for GDB, the GNU debugger.
- Copyright 1996 NeXT Software, Inc.
+/* Objective-C language support routines for GDB, the GNU debugger.
-This file is part of GDB.
+ Copyright 2002, 2003 Free Software Foundation, Inc.
-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.
+ Contributed by Apple Computer, Inc.
+ Written by Michael Snyder.
-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.
+ This file is part of GDB.
-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. */
+ 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 "expression.h"
#include "parser-defs.h"
#include "language.h"
+#include "c-lang.h"
#include "objc-lang.h"
#include "complaints.h"
#include "value.h"
#include "symfile.h"
#include "objfiles.h"
-#include "string.h" /* for strchr */
+#include "gdb_string.h" /* for strchr */
#include "target.h" /* for target_has_execution */
#include "gdbcore.h"
#include "gdbcmd.h"
#include "frame.h"
#include "gdb_regex.h"
#include "regcache.h"
+#include "block.h"
#include <ctype.h>
/* Complaints about ObjC classes, selectors, etc. */
-static struct complaint noclass_lookup_complaint =
- {"no way to lookup Objective-C classes", 0, 0};
-
-static struct complaint nosel_lookup_complaint =
- {"no way to lookup Objective-C selectors", 0, 0};
-
-
#if (!defined __GNUC__ || __GNUC__ < 2 || __GNUC_MINOR__ < (defined __cplusplus ? 6 : 4))
#define __CHECK_FUNCTION ((__const char *) 0)
#else
((void) ((expression) ? 0 : gdb_check_fatal (#expression, __FILE__, \
__LINE__, __CHECK_FUNCTION)))
-void
-gdb_check (const char *str, const char *file, unsigned int line,
- const char *func)
+static void
+gdb_check (const char *str, const char *file,
+ unsigned int line, const char *func)
{
error ("assertion failure on line %u of \"%s\" in function \"%s\": %s\n",
line, file, func, str);
}
-void
-gdb_check_fatal (const char *str, const char *file, unsigned int line,
- const char *func)
+static void
+gdb_check_fatal (const char *str, const char *file,
+ unsigned int line, const char *func)
{
internal_error (file, line,
"assertion failure in function \"%s\": %s\n", func, str);
}
-/* Lookup a structure type named "struct NAME",
- visible in lexical block BLOCK.
- If NOERR is nonzero, return zero if NAME is not suitably defined. */
+/* Lookup a structure type named "struct NAME", visible in lexical
+ block BLOCK. If NOERR is nonzero, return zero if NAME is not
+ suitably defined. */
struct symbol *
lookup_struct_typedef (char *name, struct block *block, int noerr)
{
register struct symbol *sym;
- sym = lookup_symbol (name, block, STRUCT_NAMESPACE, 0, (struct symtab **) NULL);
+ sym = lookup_symbol (name, block, STRUCT_NAMESPACE, 0,
+ (struct symtab **) NULL);
if (sym == NULL)
{
if (noerr)
return 0;
else
- error ("This context has class, union or enum %s, not a struct.", name);
+ error ("This context has class, union or enum %s, not a struct.",
+ name);
}
return sym;
}
if (! target_has_execution)
{
- /* can't call into inferior to lookup class */
+ /* Can't call into inferior to lookup class. */
return 0;
}
function = find_function_in_inferior("objc_lookup_class");
else
{
- complain (&noclass_lookup_complaint, 0);
+ complaint (&symfile_complaints, "no way to lookup Objective-C classes");
return 0;
}
if (! target_has_execution)
{
- /* can't call into inferior to lookup selector */
+ /* Can't call into inferior to lookup selector. */
return 0;
}
function = find_function_in_inferior("sel_get_any_uid");
else
{
- complain (&nosel_lookup_complaint, 0);
+ complaint (&symfile_complaints, "no way to lookup Objective-C selectors");
return 0;
}
- selstring = value_coerce_array (value_string (selname, strlen (selname) + 1));
+ selstring = value_coerce_array (value_string (selname,
+ strlen (selname) + 1));
return value_as_long (call_function_by_hand (function, 1, &selstring));
}
struct type *type;
if (!target_has_execution)
- return 0; /* can't call into inferior to create NSString */
+ return 0; /* Can't call into inferior to create NSString. */
if (!(sym = lookup_struct_typedef("NSString", 0, 1)) &&
!(sym = lookup_struct_typedef("NXString", 0, 1)))
stringValue[2] = value_string(ptr, len);
stringValue[2] = value_coerce_array(stringValue[2]);
- /* _NSNewStringFromCString replaces "istr" after Lantern2A */
+ /* _NSNewStringFromCString replaces "istr" after Lantern2A. */
if (lookup_minimal_symbol("_NSNewStringFromCString", 0, 0))
{
function = find_function_in_inferior("_NSNewStringFromCString");
return nsstringValue;
}
-/* Objective C name demangling */
+/* Objective-C name demangling. */
char *
objc_demangle (const char *mangled)
while (*cp && *cp == '_')
cp++; /* skip any initial underbars in class name */
- if (!(cp = strchr(cp, '_'))) /* find first non-initial underbar */
+ cp = strchr(cp, '_');
+ if (!cp) /* find first non-initial underbar */
{
- free(demangled); /* not mangled name */
+ xfree(demangled); /* not mangled name */
return NULL;
}
if (cp[1] == '_') { /* easy case: no category name */
}
else {
*cp++ = '('; /* less easy case: category name */
- if (!(cp = strchr(cp, '_')))
+ cp = strchr(cp, '_');
+ if (!cp)
{
- free(demangled); /* not mangled name */
+ xfree(demangled); /* not mangled name */
return NULL;
}
*cp++ = ')';
- *cp++ = ' '; /* overwriting 1st char of method name... */
+ *cp++ = ' '; /* overwriting 1st char of method name... */
strcpy(cp, mangled + (cp - demangled)); /* get it back */
}
return demangled;
}
else
- return NULL; /* not an objc mangled name */
+ return NULL; /* Not an objc mangled name. */
}
-/* Print the character C on STREAM as part of the contents of a literal
- string whose delimiter is QUOTER. Note that that format for printing
- characters and strings is language specific. */
+/* Print the character C on STREAM as part of the contents of a
+ literal string whose delimiter is QUOTER. Note that that format
+ for printing characters and strings is language specific. */
static void
objc_emit_char (register int c, struct ui_file *stream, int quoter)
{
- c &= 0xFF; /* Avoid sign bit follies */
+ c &= 0xFF; /* Avoid sign bit follies. */
if (PRINT_LITERAL_FORM (c))
{
fputs_filtered ("'", stream);
}
-/* Print the character string STRING, printing at most LENGTH characters.
- Printing stops early if the number hits print_max; repeat counts
- are printed as appropriate. Print ellipses at the end if we
- had to stop before printing LENGTH characters, or if FORCE_ELLIPSES. */
+/* Print the character string STRING, printing at most LENGTH
+ characters. Printing stops early if the number hits print_max;
+ repeat counts are printed as appropriate. Print ellipses at the
+ end if we had to stop before printing LENGTH characters, or if
+ FORCE_ELLIPSES. */
static void
-objc_printstr (struct ui_file *stream, char *string, unsigned int length,
- int force_ellipses)
+objc_printstr (struct ui_file *stream, char *string,
+ unsigned int length, int width, int force_ellipses)
{
register unsigned int i;
unsigned int things_printed = 0;
extern int print_max;
/* If the string was not truncated due to `set print elements', and
- the last byte of it is a null, we don't print that, in traditional C
- style. */
+ the last byte of it is a null, we don't print that, in
+ traditional C style. */
if ((!force_ellipses) && length > 0 && string[length-1] == '\0')
length--;
for (i = 0; i < length && things_printed < print_max; ++i)
{
- /* Position of the character we are examining
- to see whether it is repeated. */
+ /* Position of the character we are examining to see whether it
+ is repeated. */
unsigned int rep1;
/* Number of repetitions we have detected so far. */
unsigned int reps;
fputs_filtered ("...", stream);
}
-/* Create a fundamental C type using default reasonable for the current
- target machine.
-
- Some object/debugging file formats (DWARF version 1, COFF, etc) do not
- define fundamental types such as "int" or "double". Others (stabs or
- DWARF version 2, etc) do define fundamental types. For the formats which
- don't provide fundamental types, gdb can create such types using this
- function.
-
- FIXME: Some compilers distinguish explicitly signed integral types
- (signed short, signed int, signed long) from "regular" integral types
- (short, int, long) in the debugging information. There is some dis-
- agreement as to how useful this feature is. In particular, gcc does
- not support this. Also, only some debugging formats allow the
- distinction to be passed on to a debugger. For now, we always just
- use "short", "int", or "long" as the type name, for both the implicit
- and explicitly signed types. This also makes life easier for the
- gdb test suite since we don't have to account for the differences
- in output depending upon what the compiler and debugging format
- support. We will probably have to re-examine the issue when gdb
- starts taking it's fundamental type information directly from the
- debugging information supplied by the compiler. fnf@cygnus.com */
+/* Create a fundamental C type using default reasonable for the
+ current target.
+
+ Some object/debugging file formats (DWARF version 1, COFF, etc) do
+ not define fundamental types such as "int" or "double". Others
+ (stabs or DWARF version 2, etc) do define fundamental types. For
+ the formats which don't provide fundamental types, gdb can create
+ such types using this function.
+
+ FIXME: Some compilers distinguish explicitly signed integral types
+ (signed short, signed int, signed long) from "regular" integral
+ types (short, int, long) in the debugging information. There is
+ some disagreement as to how useful this feature is. In particular,
+ gcc does not support this. Also, only some debugging formats allow
+ the distinction to be passed on to a debugger. For now, we always
+ just use "short", "int", or "long" as the type name, for both the
+ implicit and explicitly signed types. This also makes life easier
+ for the gdb test suite since we don't have to account for the
+ differences in output depending upon what the compiler and
+ debugging format support. We will probably have to re-examine the
+ issue when gdb starts taking it's fundamental type information
+ directly from the debugging information supplied by the compiler.
+ fnf@cygnus.com */
static struct type *
objc_create_fundamental_type (struct objfile *objfile, int typeid)
switch (typeid)
{
default:
- /* FIXME: For now, if we are asked to produce a type not in this
- language, create the equivalent of a C integer type with the
- name "<?type?>". When all the dust settles from the type
- reconstruction work, this should probably become an error. */
+ /* FIXME: For now, if we are asked to produce a type not in
+ this language, create the equivalent of a C integer type
+ with the name "<?type?>". When all the dust settles from
+ the type reconstruction work, this should probably become
+ an error. */
type = init_type (TYPE_CODE_INT,
TARGET_INT_BIT / TARGET_CHAR_BIT,
0, "<?type?>", objfile);
};
const struct language_defn objc_language_defn = {
- "objective-c", /* Language name */
+ "objective-c", /* Language name */
language_objc,
objc_builtin_types,
range_check_off,
{"0%lo", "0", "o", ""}, /* Octal format info */
{"%ld", "", "d", ""}, /* Decimal format info */
{"0x%lx", "0x", "x", ""}, /* Hex format info */
- objc_op_print_tab, /* expression operators for printing */
- 1, /* c-style arrays */
+ objc_op_print_tab, /* Expression operators for printing */
+ 1, /* C-style arrays */
0, /* String lower bound */
&builtin_type_char, /* Type of string elements */
LANG_MAGIC
/*
* ObjC:
- * Following functions help construct Objective C message calls
+ * Following functions help construct Objective-C message calls
*/
-struct selname /* for parsing Objective C */
+struct selname /* For parsing Objective-C. */
{
struct selname *next;
char *msglist_sel;
char *s, *p;
int len, plen;
- if (str == 0) { /* unnamed arg, or... */
- if (addcolon == 0) { /* variable number of args */
+ if (str == 0) { /* Unnamed arg, or... */
+ if (addcolon == 0) { /* variable number of args. */
msglist_len++;
return;
}
s = (char *)xmalloc(len);
strcpy(s, msglist_sel);
strncat(s, p, plen);
- free(msglist_sel);
+ xfree(msglist_sel);
msglist_sel = s;
if (addcolon) {
s[len-2] = ':';
if (!selid)
error("Can't find selector \"%s\"", p);
write_exp_elt_longcst (selid);
- free(p);
- write_exp_elt_longcst (val);/* Number of args */
- free(sel);
+ xfree(p);
+ write_exp_elt_longcst (val); /* Number of args */
+ xfree(sel);
return val;
}
* Function: specialcmp (char *a, char *b)
*
* Special strcmp: treats ']' and ' ' as end-of-string.
- * Used for qsorting lists of objc methods (either by class or selector)
+ * Used for qsorting lists of objc methods (either by class or selector).
*/
int specialcmp(char *a, char *b)
}
/*
- * Function: compare_selectors (void *, void *)
+ * Function: compare_selectors (const void *, const void *)
*
- * Comparison function for use with qsort. Arguments are symbols or msymbols
- * Compares selector part of objc method name alphabetically.
+ * Comparison function for use with qsort. Arguments are symbols or
+ * msymbols Compares selector part of objc method name alphabetically.
*/
static int
-compare_selectors (a, b)
- void *a;
- void *b;
+compare_selectors (const void *a, const void *b)
{
char *aname, *bname;
- if ((aname = SYMBOL_SOURCE_NAME (*(struct symbol **) a)) == NULL ||
- (bname = SYMBOL_SOURCE_NAME (*(struct symbol **) b)) == NULL)
+ aname = SYMBOL_PRINT_NAME (*(struct symbol **) a);
+ bname = SYMBOL_PRINT_NAME (*(struct symbol **) b);
+ if (aname == NULL || bname == NULL)
error ("internal: compare_selectors(1)");
- if ((aname = strchr(aname, ' ')) == NULL ||
- (bname = strchr(bname, ' ')) == NULL)
+ aname = strchr(aname, ' ');
+ bname = strchr(bname, ' ');
+ if (aname == NULL || bname == NULL)
error ("internal: compare_selectors(2)");
return specialcmp (aname+1, bname+1);
/*
* Function: selectors_info (regexp, from_tty)
*
- * Implements the "Info selectors" command. Takes an optional regexp arg.
- * Lists all objective c selectors that match the regexp. Works by
- * grepping thru all symbols for objective c methods. Output list is
- * sorted and uniqued.
+ * Implements the "Info selectors" command. Takes an optional regexp
+ * arg. Lists all objective c selectors that match the regexp. Works
+ * by grepping thru all symbols for objective c methods. Output list
+ * is sorted and uniqued.
*/
static void
int plusminus = 0;
if (regexp == NULL)
- strcpy(myregexp, ".*]"); /* null input, match all objc methods */
+ strcpy(myregexp, ".*]"); /* Null input, match all objc methods. */
else
{
- if (*regexp == '+' || *regexp == '-') /* if regexp starts with +/- */
- { /* user wants only class methods or only instance methods */
+ if (*regexp == '+' || *regexp == '-')
+ { /* User wants only class methods or only instance methods. */
plusminus = *regexp++;
while (*regexp == ' ' || *regexp == '\t')
regexp++;
if (0 != (val = re_comp (myregexp)))
error ("Invalid regexp (%s): %s", val, regexp);
- /* first time thru is JUST to get max length and count */
+ /* First time thru is JUST to get max length and count. */
ALL_MSYMBOLS (objfile, msymbol)
{
QUIT;
- if ((name = SYMBOL_DEMANGLED_NAME (msymbol)) == NULL)
- name = SYMBOL_NAME (msymbol);
+ name = SYMBOL_DEMANGLED_NAME (msymbol);
+ if (name == NULL)
+ name = DEPRECATED_SYMBOL_NAME (msymbol);
if (name &&
(name[0] == '-' || name[0] == '+') &&
- name[1] == '[') /* got a method name */
+ name[1] == '[') /* Got a method name. */
{
+ /* Filter for class/instance methods. */
if (plusminus && name[0] != plusminus)
- continue; /* filter for class/instance methods */
- name = (char *) strchr(name+2, ' '); /* find selector part */
+ continue;
+ /* Find selector part. */
+ name = (char *) strchr(name+2, ' ');
if (regexp == NULL || re_exec(++name) != 0)
{
char *mystart = name;
char *myend = (char *) strchr(mystart, ']');
if (myend && (myend - mystart > maxlen))
- maxlen = myend - mystart; /* get longest selector */
+ maxlen = myend - mystart; /* Get longest selector. */
matches++;
}
}
ALL_MSYMBOLS (objfile, msymbol)
{
QUIT;
- if ((name = SYMBOL_DEMANGLED_NAME (msymbol)) == NULL)
- name = SYMBOL_NAME (msymbol);
+ name = SYMBOL_DEMANGLED_NAME (msymbol);
+ if (name == NULL)
+ name = DEPRECATED_SYMBOL_NAME (msymbol);
if (name &&
(name[0] == '-' || name[0] == '+') &&
- name[1] == '[') /* got a method name */
+ name[1] == '[') /* Got a method name. */
{
+ /* Filter for class/instance methods. */
if (plusminus && name[0] != plusminus)
- continue; /* filter for class/instance methods */
- name = (char *) strchr(name+2, ' '); /* find selector part */
+ continue;
+ /* Find selector part. */
+ name = (char *) strchr(name+2, ' ');
if (regexp == NULL || re_exec(++name) != 0)
sym_arr[matches++] = (struct symbol *) msymbol;
}
qsort (sym_arr, matches, sizeof (struct minimal_symbol *),
compare_selectors);
- asel[0] = 0; /* to prevent compare on first iteration */
- for (ix = 0; ix < matches; ix++) /* now do the output */
+ /* Prevent compare on first iteration. */
+ asel[0] = 0;
+ for (ix = 0; ix < matches; ix++) /* Now do the output. */
{
char *p = asel;
QUIT;
- if ((name = SYMBOL_DEMANGLED_NAME (sym_arr[ix])) == NULL)
- name = SYMBOL_NAME (sym_arr[ix]);
+ name = SYMBOL_DEMANGLED_NAME (sym_arr[ix]);
+ if (name == NULL)
+ name = DEPRECATED_SYMBOL_NAME (sym_arr[ix]);
name = strchr (name, ' ') + 1;
if (p[0] && specialcmp(name, p) == 0)
- continue; /* seen this one already (not unique) */
+ continue; /* Seen this one already (not unique). */
- while (*name && *name != ']') /* copy selector part */
+ /* Copy selector part. */
+ while (*name && *name != ']')
*p++ = *name++;
*p++ = '\0';
- puts_filtered_tabular(asel, maxlen + 1, 0); /* print in columns */
+ /* Print in columns. */
+ puts_filtered_tabular(asel, maxlen + 1, 0);
}
begin_line();
}
}
/*
- * Function: compare_classes (void *, void *)
+ * Function: compare_classes (const void *, const void *)
*
- * Comparison function for use with qsort. Arguments are symbols or msymbols
- * Compares class part of objc method name alphabetically.
+ * Comparison function for use with qsort. Arguments are symbols or
+ * msymbols Compares class part of objc method name alphabetically.
*/
static int
-compare_classes (a, b)
- void *a;
- void *b;
+compare_classes (const void *a, const void *b)
{
char *aname, *bname;
- if ((aname = SYMBOL_SOURCE_NAME (*(struct symbol **) a)) == NULL ||
- (bname = SYMBOL_SOURCE_NAME (*(struct symbol **) b)) == NULL)
+ aname = SYMBOL_PRINT_NAME (*(struct symbol **) a);
+ bname = SYMBOL_PRINT_NAME (*(struct symbol **) b);
+ if (aname == NULL || bname == NULL)
error ("internal: compare_classes(1)");
return specialcmp (aname+1, bname+1);
*
* Implements the "info classes" command for objective c classes.
* Lists all objective c classes that match the optional regexp.
- * Works by grepping thru the list of objective c methods.
- * List will be sorted and uniqued (since one class may have many methods).
- * BUGS: will not list a class that has no methods.
+ * Works by grepping thru the list of objective c methods. List will
+ * be sorted and uniqued (since one class may have many methods).
+ * BUGS: will not list a class that has no methods.
*/
static void
struct symbol **sym_arr;
if (regexp == NULL)
- strcpy(myregexp, ".* "); /* null input: match all objc classes */
+ strcpy(myregexp, ".* "); /* Null input: match all objc classes. */
else
{
strcpy(myregexp, regexp);
if (myregexp[strlen(myregexp) - 1] == '$')
- /* in the method name, the end of the class name is marked by ' ' */
+ /* In the method name, the end of the class name is marked by ' '. */
myregexp[strlen(myregexp) - 1] = ' ';
else
strcat(myregexp, ".* ");
if (0 != (val = re_comp (myregexp)))
error ("Invalid regexp (%s): %s", val, regexp);
- /* first time thru is JUST to get max length and count */
+ /* First time thru is JUST to get max length and count. */
ALL_MSYMBOLS (objfile, msymbol)
{
QUIT;
- if ((name = SYMBOL_DEMANGLED_NAME (msymbol)) == NULL)
- name = SYMBOL_NAME (msymbol);
+ name = SYMBOL_DEMANGLED_NAME (msymbol);
+ if (name == NULL)
+ name = DEPRECATED_SYMBOL_NAME (msymbol);
if (name &&
(name[0] == '-' || name[0] == '+') &&
- name[1] == '[') /* got a method name */
+ name[1] == '[') /* Got a method name. */
if (regexp == NULL || re_exec(name+2) != 0)
{
- char *mystart = name + 2; /* compute length of classname part */
+ /* Compute length of classname part. */
+ char *mystart = name + 2;
char *myend = (char *) strchr(mystart, ' ');
if (myend && (myend - mystart > maxlen))
ALL_MSYMBOLS (objfile, msymbol)
{
QUIT;
- if ((name = SYMBOL_DEMANGLED_NAME (msymbol)) == NULL)
- name = SYMBOL_NAME (msymbol);
+ name = SYMBOL_DEMANGLED_NAME (msymbol);
+ if (name == NULL)
+ name = DEPRECATED_SYMBOL_NAME (msymbol);
if (name &&
(name[0] == '-' || name[0] == '+') &&
- name[1] == '[') /* got a method name */
+ name[1] == '[') /* Got a method name. */
if (regexp == NULL || re_exec(name+2) != 0)
sym_arr[matches++] = (struct symbol *) msymbol;
}
qsort (sym_arr, matches, sizeof (struct minimal_symbol *),
compare_classes);
- aclass[0] = 0; /* to prevent compare on first iteration */
- for (ix = 0; ix < matches; ix++) /* now do the output */
+ /* Prevent compare on first iteration. */
+ aclass[0] = 0;
+ for (ix = 0; ix < matches; ix++) /* Now do the output. */
{
char *p = aclass;
QUIT;
- if ((name = SYMBOL_DEMANGLED_NAME (sym_arr[ix])) == NULL)
- name = SYMBOL_NAME (sym_arr[ix]);
+ name = SYMBOL_DEMANGLED_NAME (sym_arr[ix]);
+ if (name == NULL)
+ name = DEPRECATED_SYMBOL_NAME (sym_arr[ix]);
name += 2;
if (p[0] && specialcmp(name, p) == 0)
- continue; /* seen this one already (not unique) */
+ continue; /* Seen this one already (not unique). */
- while (*name && *name != ' ') /* copy class part of method name */
+ /* Copy class part of method name. */
+ while (*name && *name != ' ')
*p++ = *name++;
*p++ = '\0';
- puts_filtered_tabular(aclass, maxlen + 1, 0); /* print in columns */
+ /* Print in columns. */
+ puts_filtered_tabular(aclass, maxlen + 1, 0);
}
begin_line();
}
* a pointer to an array of symbol pointers
* possibly a pointer to a symbol found by the caller.
*
- * Output: number of methods that implement that selector.
- * Side effects: The array of symbol pointers is filled with matching syms.
+ * Output: number of methods that implement that selector. Side
+ * effects: The array of symbol pointers is filled with matching syms.
*
- * By analogy with function "find_methods" (symtab.c), builds a list of
- * symbols matching the ambiguous input, so that "decode_line_2" (symtab.c)
- * can list them and ask the user to choose one or more. In this case the
- * matches are objective c methods ("implementations") matching an objective
- * c selector.
+ * By analogy with function "find_methods" (symtab.c), builds a list
+ * of symbols matching the ambiguous input, so that "decode_line_2"
+ * (symtab.c) can list them and ask the user to choose one or more.
+ * In this case the matches are objective c methods
+ * ("implementations") matching an objective c selector.
*
- * Note that it is possible for a normal (c-style) function to have the
- * same name as an objective c selector. To prevent the selector from
- * eclipsing the function, we allow the caller (decode_line_1) to search
- * for such a function first, and if it finds one, pass it in to us. We
- * will then integrate it into the list. We also search for one here,
- * among the minsyms.
+ * Note that it is possible for a normal (c-style) function to have
+ * the same name as an objective c selector. To prevent the selector
+ * from eclipsing the function, we allow the caller (decode_line_1) to
+ * search for such a function first, and if it finds one, pass it in
+ * to us. We will then integrate it into the list. We also search
+ * for one here, among the minsyms.
*
- * NOTE: if NUM_DEBUGGABLE is non-zero, the sym_arr will be
- * divided into two parts: debuggable (struct symbol) syms,
- * and non_debuggable (struct minimal_symbol) syms.
- * The debuggable ones will come first, before NUM_DEBUGGABLE
- * (which will thus be the index of the first non-debuggable one).
+ * NOTE: if NUM_DEBUGGABLE is non-zero, the sym_arr will be divided
+ * into two parts: debuggable (struct symbol) syms, and
+ * non_debuggable (struct minimal_symbol) syms. The debuggable
+ * ones will come first, before NUM_DEBUGGABLE (which will thus
+ * be the index of the first non-debuggable one).
*/
/*
* Input: a string representing a selector
* Output: number of methods that implement that selector.
*
- * By analogy with function "total_number_of_methods", this allows
+ * By analogy with function "total_number_of_methods", this allows
* decode_line_1 (symtab.c) to detect if there are objective c methods
- * matching the input, and to allocate an array of pointers to them
- * which can be manipulated by "decode_line_2" (also in symtab.c)
+ * matching the input, and to allocate an array of pointers to them
+ * which can be manipulated by "decode_line_2" (also in symtab.c).
*/
char *
}
char *
-parse_method (char *method, char *type, char **class, char **category,
- char **selector)
+parse_method (char *method, char *type, char **class,
+ char **category, char **selector)
{
char *s1 = NULL;
char *s2 = NULL;
*s2++ = '\0';
}
- /* truncate the class name now that we're not using the open paren */
+ /* Truncate the class name now that we're not using the open paren. */
*s1++ = '\0';
nselector = s2;
return s2;
}
-void
-find_methods (struct symtab *symtab,
- char type, const char *class, const char *category,
- const char *selector,
- struct symbol **syms, unsigned int *nsym, unsigned int *ndebug)
+static void
+find_methods (struct symtab *symtab, char type,
+ const char *class, const char *category,
+ const char *selector, struct symbol **syms,
+ unsigned int *nsym, unsigned int *ndebug)
{
struct objfile *objfile = NULL;
struct minimal_symbol *msymbol = NULL;
QUIT;
if ((msymbol->type != mst_text) && (msymbol->type != mst_file_text))
- /* not a function or method */
+ /* Not a function or method. */
continue;
if (symtab)
- if ((SYMBOL_VALUE_ADDRESS (msymbol) < block->startaddr) ||
- (SYMBOL_VALUE_ADDRESS (msymbol) >= block->endaddr))
- /* not in the specified symtab */
+ if ((SYMBOL_VALUE_ADDRESS (msymbol) < BLOCK_START (block)) ||
+ (SYMBOL_VALUE_ADDRESS (msymbol) >= BLOCK_END (block)))
+ /* Not in the specified symtab. */
continue;
symname = SYMBOL_DEMANGLED_NAME (msymbol);
if (symname == NULL)
- symname = SYMBOL_NAME (msymbol);
+ symname = DEPRECATED_SYMBOL_NAME (msymbol);
if (symname == NULL)
continue;
if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '['))
- /* not a method name */
+ /* Not a method name. */
continue;
while ((strlen (symname) + 1) >= tmplen)
if ((type != '\0') && (ntype != type))
continue;
- if ((class != NULL) && ((nclass == NULL) || (strcmp (class, nclass) != 0)))
+ if ((class != NULL)
+ && ((nclass == NULL) || (strcmp (class, nclass) != 0)))
continue;
- if ((category != NULL) && ((ncategory == NULL) || (strcmp (category, ncategory) != 0)))
+ if ((category != NULL) &&
+ ((ncategory == NULL) || (strcmp (category, ncategory) != 0)))
continue;
- if ((selector != NULL) && ((nselector == NULL) || (strcmp (selector, nselector) != 0)))
+ if ((selector != NULL) &&
+ ((nselector == NULL) || (strcmp (selector, nselector) != 0)))
continue;
sym = find_pc_function (SYMBOL_VALUE_ADDRESS (msymbol));
if (sym != NULL)
{
- const char *newsymname = SYMBOL_DEMANGLED_NAME (sym);
+ const char *newsymname = SYMBOL_DEMANGLED_NAME (sym);
if (newsymname == NULL)
- newsymname = SYMBOL_NAME (sym);
+ newsymname = DEPRECATED_SYMBOL_NAME (sym);
if (strcmp (symname, newsymname) == 0)
{
- /* found a high-level method sym: swap it into the
- lower part of sym_arr (below num_debuggable) */
+ /* Found a high-level method sym: swap it into the
+ lower part of sym_arr (below num_debuggable). */
if (syms != NULL)
{
syms[csym] = syms[cdebug];
}
else
{
- warning ("debugging symbol \"%s\" does not match minimal symbol (\"%s\"); ignoring",
+ warning (
+"debugging symbol \"%s\" does not match minimal symbol (\"%s\"); ignoring",
newsymname, symname);
if (syms != NULL)
syms[csym] = (struct symbol *) msymbol;
}
else
{
- /* found a non-debuggable method symbol */
+ /* Found a non-debuggable method symbol. */
if (syms != NULL)
syms[csym] = (struct symbol *) msymbol;
csym++;
}
char *find_imps (struct symtab *symtab, struct block *block,
- char *method, struct symbol **syms, unsigned int *nsym,
- unsigned int *ndebug)
+ char *method, struct symbol **syms,
+ unsigned int *nsym, unsigned int *ndebug)
{
char type = '\0';
char *class = NULL;
if (msym != NULL)
{
if (syms)
- syms[csym] = msym;
+ syms[csym] = (struct symbol *)msym;
csym++;
}
}
if (syms != NULL)
- find_methods (symtab, type, class, category, selector, syms + csym, &ncsym, &ncdebug);
+ find_methods (symtab, type, class, category, selector,
+ syms + csym, &ncsym, &ncdebug);
else
- find_methods (symtab, type, class, category, selector, NULL, &ncsym, &ncdebug);
+ find_methods (symtab, type, class, category, selector,
+ NULL, &ncsym, &ncdebug);
- /* If we didn't find any methods, just return. */
+ /* If we didn't find any methods, just return. */
if (ncsym == 0 && ncdebug == 0)
return method;
* with debug symbols from the first batch. Repeat until either the
* second section is out of debug symbols or the first section is
* full of debug symbols. Either way we have all debug symbols
- * packed to the beginning of the buffer. */
+ * packed to the beginning of the buffer.
+ */
if (syms != NULL)
{
while ((cdebug < csym) && (ncdebug > 0))
{
struct symbol *s = NULL;
-
- unsigned int i = cdebug; /* first non-debugging symbol */
- unsigned int j = csym + ncdebug -1; /* last of second batch of debug symbols */
+ /* First non-debugging symbol. */
+ unsigned int i = cdebug;
+ /* Last of second batch of debug symbols. */
+ unsigned int j = csym + ncdebug - 1;
s = syms[j];
syms[j] = syms[i];
syms[i] = s;
- /* We've moved a symbol from the second debug section to the first one. */
+ /* We've moved a symbol from the second debug section to the
+ first one. */
cdebug++;
ncdebug--;
}
if (csym > 1)
{
- /* sort debuggable symbols */
+ /* Sort debuggable symbols. */
if (cdebug > 1)
- qsort (syms, cdebug, sizeof (struct minimal_symbol *), compare_classes);
+ qsort (syms, cdebug, sizeof (struct minimal_symbol *),
+ compare_classes);
- /* sort minimal_symbols */
+ /* Sort minimal_symbols. */
if ((csym - cdebug) > 1)
- qsort (&syms[cdebug], csym - cdebug, sizeof (struct minimal_symbol *), compare_classes);
+ qsort (&syms[cdebug], csym - cdebug,
+ sizeof (struct minimal_symbol *), compare_classes);
}
- syms[csym] = 0; /* terminate the sym_arr list */
+ /* Terminate the sym_arr list. */
+ syms[csym] = 0;
return method + (tmp - buf);
}
print_object_command (char *args, int from_tty)
{
struct value *object, *function, *description;
- CORE_ADDR string_addr;
+ CORE_ADDR string_addr, object_addr;
int i = 0;
char c = -1;
if (!args || !*args)
- error ("The 'print-object' command requires an argument (an Objective-C object)");
+ error (
+"The 'print-object' command requires an argument (an Objective-C object)");
{
struct expression *expr = parse_expression (args);
- register struct cleanup *old_chain = make_cleanup (free_current_contents, &expr);
+ register struct cleanup *old_chain =
+ make_cleanup (free_current_contents, &expr);
int pc = 0;
-#if 1
object = expr->language_defn->evaluate_exp (builtin_type_void_data_ptr,
expr, &pc, EVAL_NORMAL);
-#else
- object = evaluate_subexp (builtin_type_void_data_ptr, expr, &pc, EVAL_NORMAL);
-#endif
do_cleanups (old_chain);
}
- if (!(function = find_function_in_inferior ("_NSPrintForDebugger")))
+ /* Validate the address for sanity. */
+ object_addr = value_as_long (object);
+ read_memory (object_addr, &c, 1);
+
+ function = find_function_in_inferior ("_NSPrintForDebugger");
+ if (function == NULL)
error ("Unable to locate _NSPrintForDebugger in child process");
description = call_function_by_hand (function, 1, &object);
- if ((string_addr = value_as_long (description)) == 0)
+ string_addr = value_as_long (description);
+ if (string_addr == 0)
error ("object returns null description");
read_memory (string_addr + i++, &c, 1);
if (c != '\0')
do
- { /* read and print characters up to EOS */
+ { /* Read and print characters up to EOS. */
QUIT;
printf_filtered ("%c", c);
read_memory (string_addr + i++, &c, 1);
printf_filtered ("\n");
}
-/* The data structure 'methcalls' is used to detect method calls
- * (thru ObjC runtime lib functions objc_msgSend, objc_msgSendSuper, etc.),
- * and ultimately find the method being called.
+/* The data structure 'methcalls' is used to detect method calls (thru
+ * ObjC runtime lib functions objc_msgSend, objc_msgSendSuper, etc.),
+ * and ultimately find the method being called.
*/
struct objc_methcall {
char *name;
- CORE_ADDR (*stop_at) (CORE_ADDR); /* should return instance method to be called */
- CORE_ADDR begin; /* start of pc range corresponding to method invocation */
- CORE_ADDR end; /* end of pc range corresponding to method invocation */
+ /* Return instance method to be called. */
+ int (*stop_at) (CORE_ADDR, CORE_ADDR *);
+ /* Start of pc range corresponding to method invocation. */
+ CORE_ADDR begin;
+ /* End of pc range corresponding to method invocation. */
+ CORE_ADDR end;
};
-static int resolve_msgsend PARAMS ((CORE_ADDR pc, CORE_ADDR *new_pc));
-static int resolve_msgsend_stret PARAMS ((CORE_ADDR pc, CORE_ADDR *new_pc));
-static int resolve_msgsend_super PARAMS ((CORE_ADDR pc, CORE_ADDR *new_pc));
-static int resolve_msgsend_super_stret PARAMS ((CORE_ADDR pc, CORE_ADDR *new_pc));
+static int resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc);
+static int resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc);
+static int resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc);
+static int resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc);
static struct objc_methcall methcalls[] = {
{ "_objc_msgSend", resolve_msgsend, 0, 0},
#define nmethcalls (sizeof (methcalls) / sizeof (methcalls[0]))
-/* The following function, "find_objc_msgsend", fills in the data structure
- * "objc_msgs" by finding the addresses of each of the (currently four)
- * functions that it holds (of which objc_msgSend is the first). This
- * must be called each time symbols are loaded, in case the functions
- * have moved for some reason.
+/* The following function, "find_objc_msgsend", fills in the data
+ * structure "objc_msgs" by finding the addresses of each of the
+ * (currently four) functions that it holds (of which objc_msgSend is
+ * the first). This must be called each time symbols are loaded, in
+ * case the functions have moved for some reason.
*/
void
struct minimal_symbol *func;
- /* try both with and without underscore */
+ /* Try both with and without underscore. */
func = lookup_minimal_symbol (methcalls[i].name, NULL, NULL);
if ((func == NULL) && (methcalls[i].name[0] == '_')) {
func = lookup_minimal_symbol (methcalls[i].name + 1, NULL, NULL);
/* find_objc_msgcall (replaces pc_off_limits)
*
- * ALL that this function now does is to determine whether the input
- * address ("pc") is the address of one of the Objective C message
+ * ALL that this function now does is to determine whether the input
+ * address ("pc") is the address of one of the Objective-C message
* dispatch functions (mainly objc_msgSend or objc_msgSendSuper), and
* if so, it returns the address of the method that will be called.
*
* The old function "pc_off_limits" used to do a lot of other things
- * in addition, such as detecting shared library jump stubs and
+ * in addition, such as detecting shared library jump stubs and
* returning the address of the shlib function that would be called.
- * That functionality has been moved into the SKIP_TRAMPOLINE_CODE
- * and IN_SOLIB_TRAMPOLINE macros, which are resolved in the target-
- * dependent modules.
+ * That functionality has been moved into the SKIP_TRAMPOLINE_CODE and
+ * IN_SOLIB_TRAMPOLINE macros, which are resolved in the target-
+ * dependent modules.
*/
struct objc_submethod_helper_data {
- CORE_ADDR (*f) (CORE_ADDR, CORE_ADDR *);
+ int (*f) (CORE_ADDR, CORE_ADDR *);
CORE_ADDR pc;
CORE_ADDR *new_pc;
};
int
-find_objc_msgcall_submethod_helper (PTR arg)
+find_objc_msgcall_submethod_helper (void * arg)
{
- struct objc_submethod_helper_data *s = (struct objc_submethod_helper_data *) arg;
- if (s->f (s->pc, s->new_pc) == 0) {
+ struct objc_submethod_helper_data *s =
+ (struct objc_submethod_helper_data *) arg;
+
+ if (s->f (s->pc, s->new_pc) == 0)
return 1;
- } else {
+ else
return 0;
- }
}
int
-find_objc_msgcall_submethod (f, pc, new_pc)
- CORE_ADDR (*f) (CORE_ADDR, CORE_ADDR *);
- CORE_ADDR pc;
- CORE_ADDR *new_pc;
+find_objc_msgcall_submethod (int (*f) (CORE_ADDR, CORE_ADDR *),
+ CORE_ADDR pc,
+ CORE_ADDR *new_pc)
{
struct objc_submethod_helper_data s;
s.new_pc = new_pc;
if (catch_errors (find_objc_msgcall_submethod_helper,
- (PTR) &s,
- "Unable to determine target of Objective-C method call (ignoring):\n",
- RETURN_MASK_ALL) == 0) {
+ (void *) &s,
+ "Unable to determine target of Objective-C method call (ignoring):\n",
+ RETURN_MASK_ALL) == 0)
return 1;
- } else {
+ else
return 0;
- }
}
int
find_objc_msgsend ();
if (new_pc != NULL) { *new_pc = 0; }
- for (i = 0; i < nmethcalls; i++) {
- if ((pc >= methcalls[i].begin) && (pc < methcalls[i].end)) {
- if (methcalls[i].stop_at != NULL) {
- return find_objc_msgcall_submethod (methcalls[i].stop_at, pc, new_pc);
- } else {
- return 0;
+ for (i = 0; i < nmethcalls; i++)
+ if ((pc >= methcalls[i].begin) && (pc < methcalls[i].end))
+ {
+ if (methcalls[i].stop_at != NULL)
+ return find_objc_msgcall_submethod (methcalls[i].stop_at,
+ pc, new_pc);
+ else
+ return 0;
}
- }
- }
+
return 0;
}
_initialize_objc_language (void)
{
add_language (&objc_language_defn);
- add_info ("selectors", selectors_info, /* INFO SELECTORS command */
- "All Objective C selectors, or those matching REGEXP.");
- add_info ("classes", classes_info, /* INFO CLASSES command */
- "All Objective C classes, or those matching REGEXP.");
+ add_info ("selectors", selectors_info, /* INFO SELECTORS command. */
+ "All Objective-C selectors, or those matching REGEXP.");
+ add_info ("classes", classes_info, /* INFO CLASSES command. */
+ "All Objective-C classes, or those matching REGEXP.");
add_com ("print-object", class_vars, print_object_command,
- "Ask an Objective-C object to print itself.\n");
+ "Ask an Objective-C object to print itself.");
add_com_alias ("po", "print-object", class_vars, 1);
}
#if defined (__hppa__) || defined (__hppa)
static CORE_ADDR CONVERT_FUNCPTR (CORE_ADDR pc)
{
- if (pc & 0x2) {
+ if (pc & 0x2)
pc = (CORE_ADDR) read_memory_integer (pc & ~0x3, 4);
- }
+
return pc;
}
#else
static void
read_objc_method (CORE_ADDR addr, struct objc_method *method)
{
- method->name = read_memory_unsigned_integer (addr, 4);
+ method->name = read_memory_unsigned_integer (addr + 0, 4);
method->types = read_memory_unsigned_integer (addr + 4, 4);
- method->imp = read_memory_unsigned_integer (addr + 8, 4);
+ method->imp = read_memory_unsigned_integer (addr + 8, 4);
}
static
{
CORE_ADDR subclass = class;
- while (subclass != 0) {
+ while (subclass != 0)
+ {
- struct objc_class class_str;
- unsigned mlistnum = 0;
+ struct objc_class class_str;
+ unsigned mlistnum = 0;
- read_objc_class (subclass, &class_str);
+ read_objc_class (subclass, &class_str);
- for (;;) {
- CORE_ADDR mlist;
- unsigned long nmethods;
- unsigned long i;
+ for (;;)
+ {
+ CORE_ADDR mlist;
+ unsigned long nmethods;
+ unsigned long i;
- mlist = read_memory_unsigned_integer (class_str.methods + (4 * mlistnum), 4);
- if (mlist == 0) { break; }
+ mlist = read_memory_unsigned_integer (class_str.methods +
+ (4 * mlistnum), 4);
+ if (mlist == 0)
+ break;
- nmethods = read_objc_methlist_nmethods (mlist);
+ nmethods = read_objc_methlist_nmethods (mlist);
- for (i = 0; i < nmethods; i++) {
- struct objc_method meth_str;
- read_objc_methlist_method (mlist, i, &meth_str);
+ for (i = 0; i < nmethods; i++)
+ {
+ struct objc_method meth_str;
+ read_objc_methlist_method (mlist, i, &meth_str);
#if 0
- fprintf (stderr, "checking method 0x%lx against selector 0x%lx\n", meth_str.name, sel);
+ fprintf (stderr,
+ "checking method 0x%lx against selector 0x%lx\n",
+ meth_str.name, sel);
#endif
- if (meth_str.name == sel) {
- return CONVERT_FUNCPTR (meth_str.imp);
+ if (meth_str.name == sel)
+ return CONVERT_FUNCPTR (meth_str.imp);
+ }
+ mlistnum++;
}
- }
-
- mlistnum++;
+ subclass = class_str.super_class;
}
-
- subclass = class_str.super_class;
- }
return 0;
}
{
struct objc_object ostr;
- if (object == 0) { return 0; }
+ if (object == 0)
+ return 0;
read_objc_object (object, &ostr);
- if (ostr.isa == 0) { return 0; }
+ if (ostr.isa == 0)
+ return 0;
return find_implementation_from_class (ostr.isa, sel);
}
sel = FETCH_ARGUMENT (1);
res = find_implementation (object, sel);
- if (new_pc != 0) { *new_pc = res; }
- if (res == 0) { return 1; }
+ if (new_pc != 0)
+ *new_pc = res;
+ if (res == 0)
+ return 1;
return 0;
}
sel = FETCH_ARGUMENT (2);
res = find_implementation (object, sel);
- if (new_pc != 0) { *new_pc = res; }
- if (res == 0) { return 1; }
+ if (new_pc != 0)
+ *new_pc = res;
+ if (res == 0)
+ return 1;
return 0;
}
sel = FETCH_ARGUMENT (1);
read_objc_super (super, &sstr);
- if (sstr.class == 0) { return 0; }
+ if (sstr.class == 0)
+ return 0;
res = find_implementation_from_class (sstr.class, sel);
- if (new_pc != 0) { *new_pc = res; }
- if (res == 0) { return 1; }
+ if (new_pc != 0)
+ *new_pc = res;
+ if (res == 0)
+ return 1;
return 0;
}
sel = FETCH_ARGUMENT (2);
read_objc_super (super, &sstr);
- if (sstr.class == 0) { return 0; }
+ if (sstr.class == 0)
+ return 0;
res = find_implementation_from_class (sstr.class, sel);
- if (new_pc != 0) { *new_pc = res; }
- if (res == 0) { return 1; }
+ if (new_pc != 0)
+ *new_pc = res;
+ if (res == 0)
+ return 1;
return 0;
}
projects / deliverable / binutils-gdb.git / blobdiff