/* Objective-C language support routines for GDB, the GNU debugger.
- Copyright (C) 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2002-2020 Free Software Foundation, Inc.
Contributed by Apple Computer, Inc.
Written by Michael Snyder.
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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "symtab.h"
#include "expression.h"
#include "parser-defs.h"
#include "language.h"
+#include "varobj.h"
#include "c-lang.h"
#include "objc-lang.h"
-#include "exceptions.h"
#include "complaints.h"
#include "value.h"
#include "symfile.h"
#include "objfiles.h"
-#include "gdb_string.h" /* for strchr */
#include "target.h" /* for target_has_execution */
#include "gdbcore.h"
#include "gdbcmd.h"
#include "block.h"
#include "infcall.h"
#include "valprint.h"
-#include "gdb_assert.h"
+#include "cli/cli-utils.h"
#include <ctype.h>
+#include <algorithm>
struct objc_object {
CORE_ADDR isa;
struct objc_super {
CORE_ADDR receiver;
- CORE_ADDR class;
+ CORE_ADDR theclass;
};
struct objc_method {
CORE_ADDR imp;
};
+static const struct objfile_key<unsigned int> objc_objfile_data;
+
/* 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)
+lookup_struct_typedef (const char *name, const struct block *block, int noerr)
{
struct symbol *sym;
- sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0,
- (struct symtab **) NULL);
+ sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol;
if (sym == NULL)
{
else
error (_("No struct type named %s."), name);
}
- if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
+ if (SYMBOL_TYPE (sym)->code () != TYPE_CODE_STRUCT)
{
if (noerr)
return 0;
}
CORE_ADDR
-lookup_objc_class (char *classname)
+lookup_objc_class (struct gdbarch *gdbarch, const char *classname)
{
+ struct type *char_type = builtin_type (gdbarch)->builtin_char;
struct value * function, *classval;
if (! target_has_execution)
return 0;
}
- if (lookup_minimal_symbol("objc_lookUpClass", 0, 0))
- function = find_function_in_inferior("objc_lookUpClass");
- else if (lookup_minimal_symbol ("objc_lookup_class", 0, 0))
- function = find_function_in_inferior("objc_lookup_class");
+ if (lookup_minimal_symbol("objc_lookUpClass", 0, 0).minsym)
+ function = find_function_in_inferior("objc_lookUpClass", NULL);
+ else if (lookup_minimal_symbol ("objc_lookup_class", 0, 0).minsym)
+ function = find_function_in_inferior("objc_lookup_class", NULL);
else
{
- complaint (&symfile_complaints, _("no way to lookup Objective-C classes"));
+ complaint (_("no way to lookup Objective-C classes"));
return 0;
}
- classval = value_string (classname, strlen (classname) + 1);
+ classval = value_string (classname, strlen (classname) + 1, char_type);
classval = value_coerce_array (classval);
- return (CORE_ADDR) value_as_long (call_function_by_hand (function,
- 1, &classval));
+ return (CORE_ADDR) value_as_long (call_function_by_hand (function,
+ NULL,
+ classval));
}
CORE_ADDR
-lookup_child_selector (char *selname)
+lookup_child_selector (struct gdbarch *gdbarch, const char *selname)
{
+ struct type *char_type = builtin_type (gdbarch)->builtin_char;
struct value * function, *selstring;
if (! target_has_execution)
return 0;
}
- if (lookup_minimal_symbol("sel_getUid", 0, 0))
- function = find_function_in_inferior("sel_getUid");
- else if (lookup_minimal_symbol ("sel_get_any_uid", 0, 0))
- function = find_function_in_inferior("sel_get_any_uid");
+ if (lookup_minimal_symbol("sel_getUid", 0, 0).minsym)
+ function = find_function_in_inferior("sel_getUid", NULL);
+ else if (lookup_minimal_symbol ("sel_get_any_uid", 0, 0).minsym)
+ function = find_function_in_inferior("sel_get_any_uid", NULL);
else
{
- complaint (&symfile_complaints, _("no way to lookup Objective-C selectors"));
+ complaint (_("no way to lookup Objective-C selectors"));
return 0;
}
selstring = value_coerce_array (value_string (selname,
- strlen (selname) + 1));
- return value_as_long (call_function_by_hand (function, 1, &selstring));
+ strlen (selname) + 1,
+ char_type));
+ return value_as_long (call_function_by_hand (function, NULL, selstring));
}
struct value *
-value_nsstring (char *ptr, int len)
+value_nsstring (struct gdbarch *gdbarch, char *ptr, int len)
{
+ struct type *char_type = builtin_type (gdbarch)->builtin_char;
struct value *stringValue[3];
struct value *function, *nsstringValue;
struct symbol *sym;
if (!target_has_execution)
return 0; /* Can't call into inferior to create NSString. */
- sym = lookup_struct_typedef("NSString", 0, 1);
- if (sym == NULL)
- sym = lookup_struct_typedef("NXString", 0, 1);
- if (sym == NULL)
- type = lookup_pointer_type(builtin_type_void);
- else
- type = lookup_pointer_type(SYMBOL_TYPE (sym));
-
- stringValue[2] = value_string(ptr, len);
+ stringValue[2] = value_string(ptr, len, char_type);
stringValue[2] = value_coerce_array(stringValue[2]);
/* _NSNewStringFromCString replaces "istr" after Lantern2A. */
- if (lookup_minimal_symbol("_NSNewStringFromCString", 0, 0))
+ if (lookup_minimal_symbol("_NSNewStringFromCString", 0, 0).minsym)
{
- function = find_function_in_inferior("_NSNewStringFromCString");
- nsstringValue = call_function_by_hand(function, 1, &stringValue[2]);
+ function = find_function_in_inferior("_NSNewStringFromCString", NULL);
+ nsstringValue = call_function_by_hand(function, NULL, stringValue[2]);
}
- else if (lookup_minimal_symbol("istr", 0, 0))
+ else if (lookup_minimal_symbol("istr", 0, 0).minsym)
{
- function = find_function_in_inferior("istr");
- nsstringValue = call_function_by_hand(function, 1, &stringValue[2]);
+ function = find_function_in_inferior("istr", NULL);
+ nsstringValue = call_function_by_hand(function, NULL, stringValue[2]);
}
- else if (lookup_minimal_symbol("+[NSString stringWithCString:]", 0, 0))
+ else if (lookup_minimal_symbol("+[NSString stringWithCString:]", 0, 0).minsym)
{
- function = find_function_in_inferior("+[NSString stringWithCString:]");
+ function
+ = find_function_in_inferior("+[NSString stringWithCString:]", NULL);
+ type = builtin_type (gdbarch)->builtin_long;
+
stringValue[0] = value_from_longest
- (builtin_type_long, lookup_objc_class ("NSString"));
+ (type, lookup_objc_class (gdbarch, "NSString"));
stringValue[1] = value_from_longest
- (builtin_type_long, lookup_child_selector ("stringWithCString:"));
- nsstringValue = call_function_by_hand(function, 3, &stringValue[0]);
+ (type, lookup_child_selector (gdbarch, "stringWithCString:"));
+ nsstringValue = call_function_by_hand(function, NULL, stringValue);
}
else
error (_("NSString: internal error -- no way to create new NSString"));
+ sym = lookup_struct_typedef("NSString", 0, 1);
+ if (sym == NULL)
+ sym = lookup_struct_typedef("NXString", 0, 1);
+ if (sym == NULL)
+ type = builtin_type (gdbarch)->builtin_data_ptr;
+ else
+ type = lookup_pointer_type(SYMBOL_TYPE (sym));
+
deprecated_set_value_type (nsstringValue, type);
return nsstringValue;
}
(mangled[1] == 'i' || mangled[1] == 'c') &&
mangled[2] == '_')
{
- cp = demangled = xmalloc(strlen(mangled) + 2);
+ cp = demangled = (char *) xmalloc (strlen (mangled) + 2);
if (mangled[1] == 'i')
*cp++ = '-'; /* for instance method */
*cp++ = '+'; /* for class method */
*cp++ = '['; /* opening left brace */
- strcpy(cp, mangled+3); /* tack on the rest of the mangled name */
+ strcpy(cp, mangled+3); /* Tack on the rest of the mangled name. */
while (*cp && *cp == '_')
- cp++; /* skip any initial underbars in class name */
+ cp++; /* Skip any initial underbars in class
+ name. */
cp = strchr(cp, '_');
- if (!cp) /* find first non-initial underbar */
+ if (!cp) /* Find first non-initial underbar. */
{
xfree(demangled); /* not mangled name */
return NULL;
}
- if (cp[1] == '_') { /* easy case: no category name */
- *cp++ = ' '; /* replace two '_' with one ' ' */
- strcpy(cp, mangled + (cp - demangled) + 2);
- }
- else {
- *cp++ = '('; /* less easy case: category name */
- cp = strchr(cp, '_');
- if (!cp)
- {
- xfree(demangled); /* not mangled name */
- return NULL;
- }
- *cp++ = ')';
- *cp++ = ' '; /* overwriting 1st char of method name... */
- strcpy(cp, mangled + (cp - demangled)); /* get it back */
- }
+ if (cp[1] == '_') /* Easy case: no category name. */
+ {
+ *cp++ = ' '; /* Replace two '_' with one ' '. */
+ strcpy(cp, mangled + (cp - demangled) + 2);
+ }
+ else
+ {
+ *cp++ = '('; /* Less easy case: category name. */
+ cp = strchr(cp, '_');
+ if (!cp)
+ {
+ xfree(demangled); /* not mangled name */
+ return NULL;
+ }
+ *cp++ = ')';
+ *cp++ = ' '; /* Overwriting 1st char of method name... */
+ strcpy(cp, mangled + (cp - demangled)); /* Get it back. */
+ }
while (*cp && *cp == '_')
- cp++; /* skip any initial underbars in method name */
+ cp++; /* Skip any initial underbars in
+ method name. */
for (; *cp; cp++)
if (*cp == '_')
- *cp = ':'; /* replace remaining '_' with ':' */
+ *cp = ':'; /* Replace remaining '_' with ':'. */
*cp++ = ']'; /* closing right brace */
*cp++ = 0; /* string terminator */
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. */
-
-static void
-objc_emit_char (int c, struct ui_file *stream, int quoter)
-{
-
- c &= 0xFF; /* Avoid sign bit follies. */
-
- if (PRINT_LITERAL_FORM (c))
- {
- if (c == '\\' || c == quoter)
- {
- fputs_filtered ("\\", stream);
- }
- fprintf_filtered (stream, "%c", c);
- }
- else
- {
- switch (c)
- {
- case '\n':
- fputs_filtered ("\\n", stream);
- break;
- case '\b':
- fputs_filtered ("\\b", stream);
- break;
- case '\t':
- fputs_filtered ("\\t", stream);
- break;
- case '\f':
- fputs_filtered ("\\f", stream);
- break;
- case '\r':
- fputs_filtered ("\\r", stream);
- break;
- case '\033':
- fputs_filtered ("\\e", stream);
- break;
- case '\007':
- fputs_filtered ("\\a", stream);
- break;
- default:
- fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
- break;
- }
- }
-}
-
-static void
-objc_printchar (int c, struct ui_file *stream)
-{
- fputs_filtered ("'", stream);
- objc_emit_char (c, stream, '\'');
- 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. */
-
-static void
-objc_printstr (struct ui_file *stream, const gdb_byte *string,
- unsigned int length, int width, int force_ellipses)
-{
- unsigned int i;
- unsigned int things_printed = 0;
- int in_quotes = 0;
- int need_comma = 0;
-
- /* 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. */
- if ((!force_ellipses) && length > 0 && string[length-1] == '\0')
- length--;
-
- if (length == 0)
- {
- fputs_filtered ("\"\"", stream);
- return;
- }
-
- for (i = 0; i < length && things_printed < print_max; ++i)
- {
- /* 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;
-
- QUIT;
-
- if (need_comma)
- {
- fputs_filtered (", ", stream);
- need_comma = 0;
- }
-
- rep1 = i + 1;
- reps = 1;
- while (rep1 < length && string[rep1] == string[i])
- {
- ++rep1;
- ++reps;
- }
-
- if (reps > repeat_count_threshold)
- {
- if (in_quotes)
- {
- if (inspect_it)
- fputs_filtered ("\\\", ", stream);
- else
- fputs_filtered ("\", ", stream);
- in_quotes = 0;
- }
- objc_printchar (string[i], stream);
- fprintf_filtered (stream, " <repeats %u times>", reps);
- i = rep1 - 1;
- things_printed += repeat_count_threshold;
- need_comma = 1;
- }
- else
- {
- if (!in_quotes)
- {
- if (inspect_it)
- fputs_filtered ("\\\"", stream);
- else
- fputs_filtered ("\"", stream);
- in_quotes = 1;
- }
- objc_emit_char (string[i], stream, '"');
- ++things_printed;
- }
- }
-
- /* Terminate the quotes if necessary. */
- if (in_quotes)
- {
- if (inspect_it)
- fputs_filtered ("\\\"", stream);
- else
- fputs_filtered ("\"", stream);
- }
-
- if (force_ellipses || i < length)
- fputs_filtered ("...", stream);
-}
-
-/* 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)
-{
- struct type *type = NULL;
-
- 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. */
- type = init_type (TYPE_CODE_INT,
- gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0, "<?type?>", objfile);
- warning (_("internal error: no C/C++ fundamental type %d"), typeid);
- break;
- case FT_VOID:
- type = init_type (TYPE_CODE_VOID,
- TARGET_CHAR_BIT / TARGET_CHAR_BIT,
- 0, "void", objfile);
- break;
- case FT_CHAR:
- type = init_type (TYPE_CODE_INT,
- TARGET_CHAR_BIT / TARGET_CHAR_BIT,
- 0, "char", objfile);
- break;
- case FT_SIGNED_CHAR:
- type = init_type (TYPE_CODE_INT,
- TARGET_CHAR_BIT / TARGET_CHAR_BIT,
- 0, "signed char", objfile);
- break;
- case FT_UNSIGNED_CHAR:
- type = init_type (TYPE_CODE_INT,
- TARGET_CHAR_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned char", objfile);
- break;
- case FT_SHORT:
- type = init_type (TYPE_CODE_INT,
- gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0, "short", objfile);
- break;
- case FT_SIGNED_SHORT:
- type = init_type (TYPE_CODE_INT,
- gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0, "short", objfile); /* FIXME-fnf */
- break;
- case FT_UNSIGNED_SHORT:
- type = init_type (TYPE_CODE_INT,
- gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
- break;
- case FT_INTEGER:
- type = init_type (TYPE_CODE_INT,
- gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0, "int", objfile);
- break;
- case FT_SIGNED_INTEGER:
- type = init_type (TYPE_CODE_INT,
- gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0, "int", objfile); /* FIXME -fnf */
- break;
- case FT_UNSIGNED_INTEGER:
- type = init_type (TYPE_CODE_INT,
- gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
- break;
- case FT_LONG:
- type = init_type (TYPE_CODE_INT,
- gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0, "long", objfile);
- break;
- case FT_SIGNED_LONG:
- type = init_type (TYPE_CODE_INT,
- gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0, "long", objfile); /* FIXME -fnf */
- break;
- case FT_UNSIGNED_LONG:
- type = init_type (TYPE_CODE_INT,
- gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
- break;
- case FT_LONG_LONG:
- type = init_type (TYPE_CODE_INT,
- gdbarch_long_long_bit (current_gdbarch)
- / TARGET_CHAR_BIT,
- 0, "long long", objfile);
- break;
- case FT_SIGNED_LONG_LONG:
- type = init_type (TYPE_CODE_INT,
- gdbarch_long_long_bit (current_gdbarch)
- / TARGET_CHAR_BIT,
- 0, "signed long long", objfile);
- break;
- case FT_UNSIGNED_LONG_LONG:
- type = init_type (TYPE_CODE_INT,
- gdbarch_long_long_bit (current_gdbarch)
- / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
- break;
- case FT_FLOAT:
- type = init_type (TYPE_CODE_FLT,
- gdbarch_float_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0, "float", objfile);
- break;
- case FT_DBL_PREC_FLOAT:
- type = init_type (TYPE_CODE_FLT,
- gdbarch_double_bit (current_gdbarch)
- / TARGET_CHAR_BIT,
- 0, "double", objfile);
- break;
- case FT_EXT_PREC_FLOAT:
- type = init_type (TYPE_CODE_FLT,
- gdbarch_long_double_bit (current_gdbarch)
- / TARGET_CHAR_BIT,
- 0, "long double", objfile);
- break;
- }
- return (type);
-}
-
/* Determine if we are currently in the Objective-C dispatch function.
If so, get the address of the method function that the dispatcher
- would call and use that as the function to step into instead. Also
+ would call and use that as the function to step into instead. Also
skip over the trampoline for the function (if any). This is better
for the user since they are only interested in stepping into the
method function anyway. */
static CORE_ADDR
objc_skip_trampoline (struct frame_info *frame, CORE_ADDR stop_pc)
{
+ struct gdbarch *gdbarch = get_frame_arch (frame);
CORE_ADDR real_stop_pc;
CORE_ADDR method_stop_pc;
- real_stop_pc = gdbarch_skip_trampoline_code
- (current_gdbarch, frame, stop_pc);
+ real_stop_pc = gdbarch_skip_trampoline_code (gdbarch, frame, stop_pc);
if (real_stop_pc != 0)
find_objc_msgcall (real_stop_pc, &method_stop_pc);
if (method_stop_pc)
{
real_stop_pc = gdbarch_skip_trampoline_code
- (current_gdbarch, frame, method_stop_pc);
+ (gdbarch, frame, method_stop_pc);
if (real_stop_pc == 0)
real_stop_pc = method_stop_pc;
}
{NULL, OP_NULL, PREC_NULL, 0}
};
-struct type ** const (objc_builtin_types[]) =
+static const char *objc_extensions[] =
{
- &builtin_type_int,
- &builtin_type_long,
- &builtin_type_short,
- &builtin_type_char,
- &builtin_type_float,
- &builtin_type_double,
- &builtin_type_void,
- &builtin_type_long_long,
- &builtin_type_signed_char,
- &builtin_type_unsigned_char,
- &builtin_type_unsigned_short,
- &builtin_type_unsigned_int,
- &builtin_type_unsigned_long,
- &builtin_type_unsigned_long_long,
- &builtin_type_long_double,
- &builtin_type_complex,
- &builtin_type_double_complex,
- 0
+ ".m", NULL
};
-const struct language_defn objc_language_defn = {
+/* Constant data representing the Objective-C language. */
+
+extern const struct language_data objc_language_data =
+{
"objective-c", /* Language name */
+ "Objective-C",
language_objc,
- objc_builtin_types,
range_check_off,
- type_check_off,
case_sensitive_on,
array_row_major,
+ macro_expansion_c,
+ objc_extensions,
&exp_descriptor_standard,
- objc_parse,
- objc_error,
+ c_parse,
null_post_parser,
- objc_printchar, /* Print a character constant */
- objc_printstr, /* Function to print string constant */
- objc_emit_char,
- objc_create_fundamental_type, /* Create fundamental type in this language */
- c_print_type, /* Print a type using appropriate syntax */
- c_val_print, /* Print a value using appropriate syntax */
+ c_printchar, /* Print a character constant */
+ c_printstr, /* Function to print string constant */
+ c_emit_char,
+ c_print_typedef, /* Print a typedef using appropriate syntax */
+ c_value_print_inner, /* la_value_print_inner */
c_value_print, /* Print a top-level value */
objc_skip_trampoline, /* Language specific skip_trampoline */
- value_of_this, /* value_of_this */
+ "self", /* name_of_this */
+ false, /* la_store_sym_names_in_linkage_form_p */
basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
- basic_lookup_transparent_type,/* lookup_transparent_type */
- objc_demangle, /* Language specific symbol demangler */
- NULL, /* Language specific class_name_from_physname */
+ NULL, /* Language specific
+ class_name_from_physname */
objc_op_print_tab, /* Expression operators for printing */
1, /* C-style arrays */
0, /* String lower bound */
- &builtin_type_char, /* Type of string elements */
default_word_break_characters,
- NULL, /* FIXME: la_language_arch_info. */
- default_print_array_index,
- LANG_MAGIC
+ default_collect_symbol_completion_matches,
+ c_watch_location_expression,
+ NULL, /* la_get_symbol_name_matcher */
+ &default_varobj_ops,
+ NULL,
+ c_is_string_type_p,
+ "{...}" /* la_struct_too_deep_ellipsis */
};
+/* Class representing the Objective-C language. */
+
+class objc_language : public language_defn
+{
+public:
+ objc_language ()
+ : language_defn (language_objc, objc_language_data)
+ { /* Nothing. */ }
+
+ /* See language.h. */
+ void language_arch_info (struct gdbarch *gdbarch,
+ struct language_arch_info *lai) const override
+ {
+ c_language_arch_info (gdbarch, lai);
+ }
+
+ /* See language.h. */
+ bool sniff_from_mangled_name (const char *mangled,
+ char **demangled) const override
+ {
+ *demangled = objc_demangle (mangled, 0);
+ return *demangled != NULL;
+ }
+
+ /* See language.h. */
+
+ char *demangle (const char *mangled, int options) const override
+ {
+ return objc_demangle (mangled, options);
+ }
+
+ /* See language.h. */
+
+ void print_type (struct type *type, const char *varstring,
+ struct ui_file *stream, int show, int level,
+ const struct type_print_options *flags) const override
+ {
+ c_print_type (type, varstring, stream, show, level, flags);
+ }
+};
+
+/* Single instance of the class representing the Objective-C language. */
+
+static objc_language objc_language_defn;
+
/*
* ObjC:
- * Following functions help construct Objective-C message calls
+ * Following functions help construct Objective-C message calls.
*/
struct selname /* For parsing Objective-C. */
void
start_msglist(void)
{
- struct selname *new =
- (struct selname *) xmalloc (sizeof (struct selname));
+ struct selname *newobj = XNEW (struct selname);
- new->next = selname_chain;
- new->msglist_len = msglist_len;
- new->msglist_sel = msglist_sel;
+ newobj->next = selname_chain;
+ newobj->msglist_len = msglist_len;
+ newobj->msglist_sel = msglist_sel;
msglist_len = 0;
msglist_sel = (char *)xmalloc(1);
*msglist_sel = 0;
- selname_chain = new;
+ selname_chain = newobj;
}
void
add_msglist(struct stoken *str, int addcolon)
{
- char *s, *p;
+ char *s;
+ const char *p;
int len, plen;
- if (str == 0) { /* Unnamed arg, or... */
- if (addcolon == 0) { /* variable number of args. */
- msglist_len++;
- return;
+ if (str == 0) /* Unnamed arg, or... */
+ {
+ if (addcolon == 0) /* variable number of args. */
+ {
+ msglist_len++;
+ return;
+ }
+ p = "";
+ plen = 0;
+ }
+ else
+ {
+ p = str->ptr;
+ plen = str->length;
}
- p = "";
- plen = 0;
- } else {
- p = str->ptr;
- plen = str->length;
- }
len = plen + strlen(msglist_sel) + 2;
s = (char *)xmalloc(len);
strcpy(s, msglist_sel);
strncat(s, p, plen);
xfree(msglist_sel);
msglist_sel = s;
- if (addcolon) {
- s[len-2] = ':';
- s[len-1] = 0;
- msglist_len++;
- } else
+ if (addcolon)
+ {
+ s[len-2] = ':';
+ s[len-1] = 0;
+ msglist_len++;
+ }
+ else
s[len-2] = '\0';
}
int
-end_msglist(void)
+end_msglist (struct parser_state *ps)
{
int val = msglist_len;
struct selname *sel = selname_chain;
selname_chain = sel->next;
msglist_len = sel->msglist_len;
msglist_sel = sel->msglist_sel;
- selid = lookup_child_selector(p);
+ selid = lookup_child_selector (ps->gdbarch (), p);
if (!selid)
error (_("Can't find selector \"%s\""), p);
- write_exp_elt_longcst (selid);
+ write_exp_elt_longcst (ps, selid);
xfree(p);
- write_exp_elt_longcst (val); /* Number of args */
+ write_exp_elt_longcst (ps, val); /* Number of args */
xfree(sel);
return val;
}
/*
- * Function: specialcmp (char *a, char *b)
+ * Function: specialcmp (const char *a, const char *b)
*
* Special strcmp: treats ']' and ' ' as end-of-string.
* Used for qsorting lists of objc methods (either by class or selector).
*/
static int
-specialcmp (char *a, char *b)
+specialcmp (const char *a, const char *b)
{
while (*a && *a != ' ' && *a != ']' && *b && *b != ' ' && *b != ']')
{
a++, b++;
}
if (*a && *a != ' ' && *a != ']')
- return 1; /* a is longer therefore greater */
+ return 1; /* a is longer therefore greater. */
if (*b && *b != ' ' && *b != ']')
- return -1; /* a is shorter therefore lesser */
- return 0; /* a and b are identical */
+ return -1; /* a is shorter therefore lesser. */
+ return 0; /* a and b are identical. */
}
/*
static int
compare_selectors (const void *a, const void *b)
{
- char *aname, *bname;
+ const char *aname, *bname;
- aname = SYMBOL_PRINT_NAME (*(struct symbol **) a);
- bname = SYMBOL_PRINT_NAME (*(struct symbol **) b);
+ aname = (*(struct symbol **) a)->print_name ();
+ bname = (*(struct symbol **) b)->print_name ();
if (aname == NULL || bname == NULL)
error (_("internal: compare_selectors(1)"));
*/
static void
-selectors_info (char *regexp, int from_tty)
+info_selectors_command (const char *regexp, int from_tty)
{
- struct objfile *objfile;
- struct minimal_symbol *msymbol;
- char *name;
+ const char *name;
char *val;
int matches = 0;
int maxlen = 0;
strcpy(myregexp, ".*]");
else
{
+ /* Allow a few extra bytes because of the strcat below. */
+ if (sizeof (myregexp) < strlen (regexp) + 4)
+ error (_("Regexp is too long: %s"), regexp);
strcpy(myregexp, regexp);
if (myregexp[strlen(myregexp) - 1] == '$') /* end of selector */
myregexp[strlen(myregexp) - 1] = ']'; /* end of method name */
}
/* First time thru is JUST to get max length and count. */
- ALL_MSYMBOLS (objfile, msymbol)
+ for (objfile *objfile : current_program_space->objfiles ())
{
- QUIT;
- name = SYMBOL_NATURAL_NAME (msymbol);
- if (name &&
- (name[0] == '-' || name[0] == '+') &&
- name[1] == '[') /* Got a method name. */
+ for (minimal_symbol *msymbol : objfile->msymbols ())
{
- /* Filter for class/instance methods. */
- if (plusminus && name[0] != plusminus)
- continue;
- /* Find selector part. */
- name = (char *) strchr(name+2, ' ');
- if (regexp == NULL || re_exec(++name) != 0)
- {
- char *mystart = name;
- char *myend = (char *) strchr(mystart, ']');
+ QUIT;
+ name = msymbol->natural_name ();
+ if (name
+ && (name[0] == '-' || name[0] == '+')
+ && name[1] == '[') /* Got a method name. */
+ {
+ /* Filter for class/instance methods. */
+ if (plusminus && name[0] != plusminus)
+ continue;
+ /* Find selector part. */
+ name = (char *) strchr (name+2, ' ');
+ if (name == NULL)
+ {
+ complaint (_("Bad method name '%s'"),
+ msymbol->natural_name ());
+ continue;
+ }
+ if (regexp == NULL || re_exec(++name) != 0)
+ {
+ const char *mystart = name;
+ const char *myend = strchr (mystart, ']');
- if (myend && (myend - mystart > maxlen))
- maxlen = myend - mystart; /* Get longest selector. */
- matches++;
+ if (myend && (myend - mystart > maxlen))
+ maxlen = myend - mystart; /* Get longest selector. */
+ matches++;
+ }
}
}
}
printf_filtered (_("Selectors matching \"%s\":\n\n"),
regexp ? regexp : "*");
- sym_arr = alloca (matches * sizeof (struct symbol *));
+ sym_arr = XALLOCAVEC (struct symbol *, matches);
matches = 0;
- ALL_MSYMBOLS (objfile, msymbol)
+ for (objfile *objfile : current_program_space->objfiles ())
{
- QUIT;
- name = SYMBOL_NATURAL_NAME (msymbol);
- if (name &&
- (name[0] == '-' || name[0] == '+') &&
- name[1] == '[') /* Got a method name. */
+ for (minimal_symbol *msymbol : objfile->msymbols ())
{
- /* Filter for class/instance methods. */
- if (plusminus && name[0] != plusminus)
- continue;
- /* Find selector part. */
- name = (char *) strchr(name+2, ' ');
- if (regexp == NULL || re_exec(++name) != 0)
- sym_arr[matches++] = (struct symbol *) msymbol;
+ QUIT;
+ name = msymbol->natural_name ();
+ if (name &&
+ (name[0] == '-' || name[0] == '+') &&
+ name[1] == '[') /* Got a method name. */
+ {
+ /* Filter for class/instance methods. */
+ if (plusminus && name[0] != plusminus)
+ continue;
+ /* Find selector part. */
+ name = (char *) strchr(name+2, ' ');
+ if (regexp == NULL || re_exec(++name) != 0)
+ sym_arr[matches++] = (struct symbol *) msymbol;
+ }
}
}
char *p = asel;
QUIT;
- name = SYMBOL_NATURAL_NAME (sym_arr[ix]);
+ name = sym_arr[ix]->natural_name ();
name = strchr (name, ' ') + 1;
if (p[0] && specialcmp(name, p) == 0)
continue; /* Seen this one already (not unique). */
begin_line();
}
else
- printf_filtered (_("No selectors matching \"%s\"\n"), regexp ? regexp : "*");
+ printf_filtered (_("No selectors matching \"%s\"\n"),
+ regexp ? regexp : "*");
}
/*
static int
compare_classes (const void *a, const void *b)
{
- char *aname, *bname;
+ const char *aname, *bname;
- aname = SYMBOL_PRINT_NAME (*(struct symbol **) a);
- bname = SYMBOL_PRINT_NAME (*(struct symbol **) b);
+ aname = (*(struct symbol **) a)->print_name ();
+ bname = (*(struct symbol **) b)->print_name ();
if (aname == NULL || bname == NULL)
error (_("internal: compare_classes(1)"));
*/
static void
-classes_info (char *regexp, int from_tty)
+info_classes_command (const char *regexp, int from_tty)
{
- struct objfile *objfile;
- struct minimal_symbol *msymbol;
- char *name;
+ const char *name;
char *val;
int matches = 0;
int maxlen = 0;
strcpy(myregexp, ".* "); /* Null input: match all objc classes. */
else
{
+ /* Allow a few extra bytes because of the strcat below. */
+ if (sizeof (myregexp) < strlen (regexp) + 4)
+ error (_("Regexp is too long: %s"), regexp);
strcpy(myregexp, regexp);
if (myregexp[strlen(myregexp) - 1] == '$')
/* In the method name, the end of the class name is marked by ' '. */
}
/* First time thru is JUST to get max length and count. */
- ALL_MSYMBOLS (objfile, msymbol)
+ for (objfile *objfile : current_program_space->objfiles ())
{
- QUIT;
- name = SYMBOL_NATURAL_NAME (msymbol);
- if (name &&
- (name[0] == '-' || name[0] == '+') &&
- name[1] == '[') /* Got a method name. */
- if (regexp == NULL || re_exec(name+2) != 0)
- {
- /* Compute length of classname part. */
- char *mystart = name + 2;
- char *myend = (char *) strchr(mystart, ' ');
+ for (minimal_symbol *msymbol : objfile->msymbols ())
+ {
+ QUIT;
+ name = msymbol->natural_name ();
+ if (name &&
+ (name[0] == '-' || name[0] == '+') &&
+ name[1] == '[') /* Got a method name. */
+ if (regexp == NULL || re_exec(name+2) != 0)
+ {
+ /* Compute length of classname part. */
+ const char *mystart = name + 2;
+ const char *myend = strchr (mystart, ' ');
- if (myend && (myend - mystart > maxlen))
- maxlen = myend - mystart;
- matches++;
- }
+ if (myend && (myend - mystart > maxlen))
+ maxlen = myend - mystart;
+ matches++;
+ }
+ }
}
if (matches)
{
printf_filtered (_("Classes matching \"%s\":\n\n"),
regexp ? regexp : "*");
- sym_arr = alloca (matches * sizeof (struct symbol *));
+ sym_arr = XALLOCAVEC (struct symbol *, matches);
matches = 0;
- ALL_MSYMBOLS (objfile, msymbol)
+ for (objfile *objfile : current_program_space->objfiles ())
{
- QUIT;
- name = SYMBOL_NATURAL_NAME (msymbol);
- if (name &&
- (name[0] == '-' || name[0] == '+') &&
- name[1] == '[') /* Got a method name. */
- if (regexp == NULL || re_exec(name+2) != 0)
- sym_arr[matches++] = (struct symbol *) msymbol;
+ for (minimal_symbol *msymbol : objfile->msymbols ())
+ {
+ QUIT;
+ name = msymbol->natural_name ();
+ if (name &&
+ (name[0] == '-' || name[0] == '+') &&
+ 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 *),
char *p = aclass;
QUIT;
- name = SYMBOL_NATURAL_NAME (sym_arr[ix]);
+ name = sym_arr[ix]->natural_name ();
name += 2;
if (p[0] && specialcmp(name, p) == 0)
continue; /* Seen this one already (not unique). */
printf_filtered (_("No classes matching \"%s\"\n"), regexp ? regexp : "*");
}
-/*
- * Function: find_imps (char *selector, struct symbol **sym_arr)
- *
- * Input: a string representing a selector
- * 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.
- *
- * 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: 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).
- */
-
-/*
- * Function: total_number_of_imps (char *selector);
- *
- * Input: a string representing a selector
- * Output: number of methods that implement that selector.
- *
- * 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).
- */
-
-char *
+static char *
parse_selector (char *method, char **selector)
{
char *s1 = NULL;
s1 = method;
- while (isspace (*s1))
- s1++;
+ s1 = skip_spaces (s1);
if (*s1 == '\'')
{
found_quote = 1;
s1++;
}
- while (isspace (*s1))
- s1++;
+ s1 = skip_spaces (s1);
nselector = s1;
s2 = s1;
- for (;;) {
- if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':'))
- *s1++ = *s2;
- else if (isspace (*s2))
- ;
- else if ((*s2 == '\0') || (*s2 == '\''))
- break;
- else
- return NULL;
- s2++;
- }
+ for (;;)
+ {
+ if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':'))
+ *s1++ = *s2;
+ else if (isspace (*s2))
+ ;
+ else if ((*s2 == '\0') || (*s2 == '\''))
+ break;
+ else
+ return NULL;
+ s2++;
+ }
*s1++ = '\0';
- while (isspace (*s2))
- s2++;
+ s2 = skip_spaces (s2);
if (found_quote)
{
if (*s2 == '\'')
s2++;
- while (isspace (*s2))
- s2++;
+ s2 = skip_spaces (s2);
}
if (selector != NULL)
return s2;
}
-char *
-parse_method (char *method, char *type, char **class,
+static char *
+parse_method (char *method, char *type, char **theclass,
char **category, char **selector)
{
char *s1 = NULL;
char *nselector = NULL;
gdb_assert (type != NULL);
- gdb_assert (class != NULL);
+ gdb_assert (theclass != NULL);
gdb_assert (category != NULL);
gdb_assert (selector != NULL);
s1 = method;
- while (isspace (*s1))
- s1++;
+ s1 = skip_spaces (s1);
if (*s1 == '\'')
{
found_quote = 1;
s1++;
}
- while (isspace (*s1))
- s1++;
+ s1 = skip_spaces (s1);
if ((s1[0] == '+') || (s1[0] == '-'))
ntype = *s1++;
- while (isspace (*s1))
- s1++;
+ s1 = skip_spaces (s1);
if (*s1 != '[')
return NULL;
s1++;
s2 = s1;
- while (isspace (*s2))
- s2++;
+ s2 = skip_spaces (s2);
if (*s2 == '(')
{
s2++;
- while (isspace (*s2))
- s2++;
+ s2 = skip_spaces (s2);
ncategory = s2;
while (isalnum (*s2) || (*s2 == '_'))
s2++;
nselector = s2;
s1 = s2;
- for (;;) {
- if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':'))
- *s1++ = *s2;
- else if (isspace (*s2))
- ;
- else if (*s2 == ']')
- break;
- else
- return NULL;
- s2++;
- }
+ for (;;)
+ {
+ if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':'))
+ *s1++ = *s2;
+ else if (isspace (*s2))
+ ;
+ else if (*s2 == ']')
+ break;
+ else
+ return NULL;
+ s2++;
+ }
*s1++ = '\0';
s2++;
- while (isspace (*s2))
- s2++;
+ s2 = skip_spaces (s2);
if (found_quote)
{
if (*s2 != '\'')
return NULL;
s2++;
- while (isspace (*s2))
- s2++;
+ s2 = skip_spaces (s2);
}
if (type != NULL)
*type = ntype;
- if (class != NULL)
- *class = nclass;
+ if (theclass != NULL)
+ *theclass = nclass;
if (category != NULL)
*category = ncategory;
if (selector != NULL)
}
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)
+find_methods (char type, const char *theclass, const char *category,
+ const char *selector,
+ std::vector<const char *> *symbol_names)
{
- struct objfile *objfile = NULL;
- struct minimal_symbol *msymbol = NULL;
- struct block *block = NULL;
- struct symbol *sym = NULL;
-
- char *symname = NULL;
+ const char *symname = NULL;
char ntype = '\0';
char *nclass = NULL;
char *ncategory = NULL;
char *nselector = NULL;
- unsigned int csym = 0;
- unsigned int cdebug = 0;
-
static char *tmp = NULL;
static unsigned int tmplen = 0;
- gdb_assert (nsym != NULL);
- gdb_assert (ndebug != NULL);
+ gdb_assert (symbol_names != NULL);
- if (symtab)
- block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK);
-
- ALL_MSYMBOLS (objfile, msymbol)
+ for (objfile *objfile : current_program_space->objfiles ())
{
- QUIT;
+ unsigned int *objc_csym;
- if ((msymbol->type != mst_text) && (msymbol->type != mst_file_text))
- /* Not a function or method. */
- continue;
+ /* The objfile_csym variable counts the number of ObjC methods
+ that this objfile defines. We save that count as a private
+ objfile data. If we have already determined that this objfile
+ provides no ObjC methods, we can skip it entirely. */
- if (symtab)
- if ((SYMBOL_VALUE_ADDRESS (msymbol) < BLOCK_START (block)) ||
- (SYMBOL_VALUE_ADDRESS (msymbol) >= BLOCK_END (block)))
- /* Not in the specified symtab. */
- continue;
+ unsigned int objfile_csym = 0;
- symname = SYMBOL_NATURAL_NAME (msymbol);
- if (symname == NULL)
+ objc_csym = objc_objfile_data.get (objfile);
+ if (objc_csym != NULL && *objc_csym == 0)
+ /* There are no ObjC symbols in this objfile. Skip it entirely. */
continue;
- if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '['))
- /* Not a method name. */
- continue;
-
- while ((strlen (symname) + 1) >= tmplen)
+ for (minimal_symbol *msymbol : objfile->msymbols ())
{
- tmplen = (tmplen == 0) ? 1024 : tmplen * 2;
- tmp = xrealloc (tmp, tmplen);
- }
- strcpy (tmp, symname);
+ QUIT;
- if (parse_method (tmp, &ntype, &nclass, &ncategory, &nselector) == NULL)
- continue;
-
- if ((type != '\0') && (ntype != type))
- continue;
+ /* Check the symbol name first as this can be done entirely without
+ sending any query to the target. */
+ symname = msymbol->natural_name ();
+ if (symname == NULL)
+ continue;
- if ((class != NULL)
- && ((nclass == NULL) || (strcmp (class, nclass) != 0)))
- continue;
+ if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '['))
+ /* Not a method name. */
+ continue;
- if ((category != NULL) &&
- ((ncategory == NULL) || (strcmp (category, ncategory) != 0)))
- continue;
+ objfile_csym++;
- if ((selector != NULL) &&
- ((nselector == NULL) || (strcmp (selector, nselector) != 0)))
- continue;
+ /* Now that thinks are a bit sane, clean up the symname. */
+ while ((strlen (symname) + 1) >= tmplen)
+ {
+ tmplen = (tmplen == 0) ? 1024 : tmplen * 2;
+ tmp = (char *) xrealloc (tmp, tmplen);
+ }
+ strcpy (tmp, symname);
- sym = find_pc_function (SYMBOL_VALUE_ADDRESS (msymbol));
- if (sym != NULL)
- {
- const char *newsymname = SYMBOL_NATURAL_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). */
- if (syms != NULL)
- {
- syms[csym] = syms[cdebug];
- syms[cdebug] = sym;
- }
- csym++;
- cdebug++;
- }
- else
- {
- warning (
-"debugging symbol \"%s\" does not match minimal symbol (\"%s\"); ignoring",
- newsymname, symname);
- if (syms != NULL)
- syms[csym] = (struct symbol *) msymbol;
- csym++;
- }
- }
- else
- {
- /* Found a non-debuggable method symbol. */
- if (syms != NULL)
- syms[csym] = (struct symbol *) msymbol;
- csym++;
+ if (parse_method (tmp, &ntype, &nclass,
+ &ncategory, &nselector) == NULL)
+ continue;
+
+ if ((type != '\0') && (ntype != type))
+ continue;
+
+ if ((theclass != NULL)
+ && ((nclass == NULL) || (strcmp (theclass, nclass) != 0)))
+ continue;
+
+ if ((category != NULL) &&
+ ((ncategory == NULL) || (strcmp (category, ncategory) != 0)))
+ continue;
+
+ if ((selector != NULL) &&
+ ((nselector == NULL) || (strcmp (selector, nselector) != 0)))
+ continue;
+
+ symbol_names->push_back (symname);
}
+
+ if (objc_csym == NULL)
+ objc_csym = objc_objfile_data.emplace (objfile, objfile_csym);
+ else
+ /* Count of ObjC methods in this objfile should be constant. */
+ gdb_assert (*objc_csym == objfile_csym);
}
+}
+
+/* Uniquify a vector of strings. */
+
+static void
+uniquify_strings (std::vector<const char *> *strings)
+{
+ if (strings->empty ())
+ return;
- if (nsym != NULL)
- *nsym = csym;
- if (ndebug != NULL)
- *ndebug = cdebug;
+ std::sort (strings->begin (), strings->end (), compare_cstrings);
+ strings->erase (std::unique (strings->begin (), strings->end (), streq),
+ strings->end ());
}
-char *find_imps (struct symtab *symtab, struct block *block,
- char *method, struct symbol **syms,
- unsigned int *nsym, unsigned int *ndebug)
+/*
+ * Function: find_imps (const char *selector, struct symbol **sym_arr)
+ *
+ * Input: a string representing a selector
+ * 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.
+ *
+ * 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: 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).
+ */
+
+const char *
+find_imps (const char *method, std::vector<const char *> *symbol_names)
{
char type = '\0';
- char *class = NULL;
+ char *theclass = NULL;
char *category = NULL;
char *selector = NULL;
- unsigned int csym = 0;
- unsigned int cdebug = 0;
-
- unsigned int ncsym = 0;
- unsigned int ncdebug = 0;
-
char *buf = NULL;
char *tmp = NULL;
- gdb_assert (nsym != NULL);
- gdb_assert (ndebug != NULL);
+ int selector_case = 0;
- if (nsym != NULL)
- *nsym = 0;
- if (ndebug != NULL)
- *ndebug = 0;
+ gdb_assert (symbol_names != NULL);
buf = (char *) alloca (strlen (method) + 1);
strcpy (buf, method);
- tmp = parse_method (buf, &type, &class, &category, &selector);
-
- if (tmp == NULL) {
-
- struct symbol *sym = NULL;
- struct minimal_symbol *msym = NULL;
-
- strcpy (buf, method);
- tmp = parse_selector (buf, &selector);
-
- if (tmp == NULL)
- return NULL;
-
- sym = lookup_symbol (selector, block, VAR_DOMAIN, 0, NULL);
- if (sym != NULL)
- {
- if (syms)
- syms[csym] = sym;
- csym++;
- cdebug++;
- }
-
- if (sym == NULL)
- msym = lookup_minimal_symbol (selector, 0, 0);
+ tmp = parse_method (buf, &type, &theclass, &category, &selector);
- if (msym != NULL)
- {
- if (syms)
- syms[csym] = (struct symbol *)msym;
- csym++;
- }
- }
+ if (tmp == NULL)
+ {
+ strcpy (buf, method);
+ tmp = parse_selector (buf, &selector);
- if (syms != NULL)
- find_methods (symtab, type, class, category, selector,
- syms + csym, &ncsym, &ncdebug);
- else
- find_methods (symtab, type, class, category, selector,
- NULL, &ncsym, &ncdebug);
+ if (tmp == NULL)
+ return NULL;
- /* If we didn't find any methods, just return. */
- if (ncsym == 0 && ncdebug == 0)
- return method;
+ selector_case = 1;
+ }
- /* Take debug symbols from the second batch of symbols and swap them
- * 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.
- */
+ find_methods (type, theclass, category, selector, symbol_names);
- if (syms != NULL)
+ /* If we hit the "selector" case, and we found some methods, then
+ add the selector itself as a symbol, if it exists. */
+ if (selector_case && !symbol_names->empty ())
{
- while ((cdebug < csym) && (ncdebug > 0))
+ struct symbol *sym = lookup_symbol (selector, NULL, VAR_DOMAIN,
+ 0).symbol;
+
+ if (sym != NULL)
+ symbol_names->push_back (sym->natural_name ());
+ else
{
- struct symbol *s = NULL;
- /* 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. */
- cdebug++;
- ncdebug--;
+ struct bound_minimal_symbol msym
+ = lookup_minimal_symbol (selector, 0, 0);
+
+ if (msym.minsym != NULL)
+ symbol_names->push_back (msym.minsym->natural_name ());
}
}
- csym += ncsym;
- cdebug += ncdebug;
-
- if (nsym != NULL)
- *nsym = csym;
- if (ndebug != NULL)
- *ndebug = cdebug;
-
- if (syms == NULL)
- return method + (tmp - buf);
-
- if (csym > 1)
- {
- /* Sort debuggable symbols. */
- if (cdebug > 1)
- qsort (syms, cdebug, sizeof (struct minimal_symbol *),
- compare_classes);
-
- /* Sort minimal_symbols. */
- if ((csym - cdebug) > 1)
- qsort (&syms[cdebug], csym - cdebug,
- sizeof (struct minimal_symbol *), compare_classes);
- }
- /* Terminate the sym_arr list. */
- syms[csym] = 0;
+ uniquify_strings (symbol_names);
return method + (tmp - buf);
}
static void
-print_object_command (char *args, int from_tty)
+print_object_command (const char *args, int from_tty)
{
struct value *object, *function, *description;
CORE_ADDR string_addr, object_addr;
"The 'print-object' command requires an argument (an Objective-C object)");
{
- struct expression *expr = parse_expression (args);
- struct cleanup *old_chain =
- make_cleanup (free_current_contents, &expr);
+ expression_up expr = parse_expression (args);
int pc = 0;
- object = expr->language_defn->la_exp_desc->evaluate_exp
- (builtin_type_void_data_ptr, expr, &pc, EVAL_NORMAL);
- do_cleanups (old_chain);
+ object = evaluate_subexp (builtin_type (expr->gdbarch)->builtin_data_ptr,
+ expr.get (), &pc, EVAL_NORMAL);
}
/* Validate the address for sanity. */
object_addr = value_as_long (object);
read_memory (object_addr, &c, 1);
- function = find_function_in_inferior ("_NSPrintForDebugger");
+ function = find_function_in_inferior ("_NSPrintForDebugger", NULL);
if (function == NULL)
error (_("Unable to locate _NSPrintForDebugger in child process"));
- description = call_function_by_hand (function, 1, &object);
+ description = call_function_by_hand (function, NULL, object);
string_addr = value_as_long (description);
if (string_addr == 0)
/* 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.
+ * and ultimately find the method being called.
*/
struct objc_methcall {
- char *name;
+ const char *name;
/* Return instance method to be called. */
int (*stop_at) (CORE_ADDR, CORE_ADDR *);
/* Start of pc range corresponding to method invocation. */
* 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.
+ * case the functions have moved for some reason.
*/
static void
find_objc_msgsend (void)
{
unsigned int i;
- for (i = 0; i < nmethcalls; i++) {
- struct minimal_symbol *func;
+ for (i = 0; i < nmethcalls; i++)
+ {
+ struct bound_minimal_symbol func;
- /* 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);
- }
- if (func == NULL) {
- methcalls[i].begin = 0;
- methcalls[i].end = 0;
- continue;
+ /* Try both with and without underscore. */
+ func = lookup_bound_minimal_symbol (methcalls[i].name);
+ if ((func.minsym == NULL) && (methcalls[i].name[0] == '_'))
+ {
+ func = lookup_bound_minimal_symbol (methcalls[i].name + 1);
+ }
+ if (func.minsym == NULL)
+ {
+ methcalls[i].begin = 0;
+ methcalls[i].end = 0;
+ continue;
+ }
+
+ methcalls[i].begin = BMSYMBOL_VALUE_ADDRESS (func);
+ methcalls[i].end = minimal_symbol_upper_bound (func);
}
-
- methcalls[i].begin = SYMBOL_VALUE_ADDRESS (func);
- do {
- methcalls[i].end = SYMBOL_VALUE_ADDRESS (++func);
- } while (methcalls[i].begin == methcalls[i].end);
- }
}
/* find_objc_msgcall (replaces pc_off_limits)
* returning the address of the shlib function that would be called.
* That functionality has been moved into the gdbarch_skip_trampoline_code and
* IN_SOLIB_TRAMPOLINE macros, which are resolved in the target-
- * dependent modules.
+ * dependent modules.
*/
-struct objc_submethod_helper_data {
- int (*f) (CORE_ADDR, CORE_ADDR *);
- CORE_ADDR pc;
- CORE_ADDR *new_pc;
-};
-
-static int
-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)
- return 1;
- else
- return 0;
-}
-
static int
find_objc_msgcall_submethod (int (*f) (CORE_ADDR, CORE_ADDR *),
CORE_ADDR pc,
CORE_ADDR *new_pc)
{
- struct objc_submethod_helper_data s;
-
- s.f = f;
- s.pc = pc;
- s.new_pc = new_pc;
+ try
+ {
+ if (f (pc, new_pc) == 0)
+ return 1;
+ }
+ catch (const gdb_exception &ex)
+ {
+ exception_fprintf (gdb_stderr, ex,
+ "Unable to determine target of "
+ "Objective-C method call (ignoring):\n");
+ }
- if (catch_errors (find_objc_msgcall_submethod_helper,
- (void *) &s,
- "Unable to determine target of Objective-C method call (ignoring):\n",
- RETURN_MASK_ALL) == 0)
- return 1;
- else
- return 0;
+ return 0;
}
int
return 0;
}
-extern initialize_file_ftype _initialize_objc_language; /* -Wmissing-prototypes */
-
+void _initialize_objc_language ();
void
-_initialize_objc_language (void)
+_initialize_objc_language ()
{
- add_language (&objc_language_defn);
- add_info ("selectors", selectors_info, /* INFO SELECTORS command. */
+ add_info ("selectors", info_selectors_command,
_("All Objective-C selectors, or those matching REGEXP."));
- add_info ("classes", classes_info, /* INFO CLASSES command. */
+ add_info ("classes", 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."));
}
static void
-read_objc_method (CORE_ADDR addr, struct objc_method *method)
+read_objc_method (struct gdbarch *gdbarch, CORE_ADDR addr,
+ struct objc_method *method)
{
- 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);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+
+ method->name = read_memory_unsigned_integer (addr + 0, 4, byte_order);
+ method->types = read_memory_unsigned_integer (addr + 4, 4, byte_order);
+ method->imp = read_memory_unsigned_integer (addr + 8, 4, byte_order);
}
-static
-unsigned long read_objc_methlist_nmethods (CORE_ADDR addr)
+static unsigned long
+read_objc_methlist_nmethods (struct gdbarch *gdbarch, CORE_ADDR addr)
{
- return read_memory_unsigned_integer (addr + 4, 4);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+
+ return read_memory_unsigned_integer (addr + 4, 4, byte_order);
}
static void
-read_objc_methlist_method (CORE_ADDR addr, unsigned long num,
- struct objc_method *method)
+read_objc_methlist_method (struct gdbarch *gdbarch, CORE_ADDR addr,
+ unsigned long num, struct objc_method *method)
{
- gdb_assert (num < read_objc_methlist_nmethods (addr));
- read_objc_method (addr + 8 + (12 * num), method);
+ gdb_assert (num < read_objc_methlist_nmethods (gdbarch, addr));
+ read_objc_method (gdbarch, addr + 8 + (12 * num), method);
}
static void
-read_objc_object (CORE_ADDR addr, struct objc_object *object)
+read_objc_object (struct gdbarch *gdbarch, CORE_ADDR addr,
+ struct objc_object *object)
{
- object->isa = read_memory_unsigned_integer (addr, 4);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+
+ object->isa = read_memory_unsigned_integer (addr, 4, byte_order);
}
static void
-read_objc_super (CORE_ADDR addr, struct objc_super *super)
+read_objc_super (struct gdbarch *gdbarch, CORE_ADDR addr,
+ struct objc_super *super)
{
- super->receiver = read_memory_unsigned_integer (addr, 4);
- super->class = read_memory_unsigned_integer (addr + 4, 4);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+
+ super->receiver = read_memory_unsigned_integer (addr, 4, byte_order);
+ super->theclass = read_memory_unsigned_integer (addr + 4, 4, byte_order);
};
static void
-read_objc_class (CORE_ADDR addr, struct objc_class *class)
+read_objc_class (struct gdbarch *gdbarch, CORE_ADDR addr,
+ struct objc_class *theclass)
{
- class->isa = read_memory_unsigned_integer (addr, 4);
- class->super_class = read_memory_unsigned_integer (addr + 4, 4);
- class->name = read_memory_unsigned_integer (addr + 8, 4);
- class->version = read_memory_unsigned_integer (addr + 12, 4);
- class->info = read_memory_unsigned_integer (addr + 16, 4);
- class->instance_size = read_memory_unsigned_integer (addr + 18, 4);
- class->ivars = read_memory_unsigned_integer (addr + 24, 4);
- class->methods = read_memory_unsigned_integer (addr + 28, 4);
- class->cache = read_memory_unsigned_integer (addr + 32, 4);
- class->protocols = read_memory_unsigned_integer (addr + 36, 4);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+
+ theclass->isa = read_memory_unsigned_integer (addr, 4, byte_order);
+ theclass->super_class = read_memory_unsigned_integer (addr + 4, 4, byte_order);
+ theclass->name = read_memory_unsigned_integer (addr + 8, 4, byte_order);
+ theclass->version = read_memory_unsigned_integer (addr + 12, 4, byte_order);
+ theclass->info = read_memory_unsigned_integer (addr + 16, 4, byte_order);
+ theclass->instance_size = read_memory_unsigned_integer (addr + 18, 4,
+ byte_order);
+ theclass->ivars = read_memory_unsigned_integer (addr + 24, 4, byte_order);
+ theclass->methods = read_memory_unsigned_integer (addr + 28, 4, byte_order);
+ theclass->cache = read_memory_unsigned_integer (addr + 32, 4, byte_order);
+ theclass->protocols = read_memory_unsigned_integer (addr + 36, 4, byte_order);
}
static CORE_ADDR
-find_implementation_from_class (CORE_ADDR class, CORE_ADDR sel)
+find_implementation_from_class (struct gdbarch *gdbarch,
+ CORE_ADDR theclass, CORE_ADDR sel)
{
- CORE_ADDR subclass = class;
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ CORE_ADDR subclass = theclass;
while (subclass != 0)
{
struct objc_class class_str;
unsigned mlistnum = 0;
- read_objc_class (subclass, &class_str);
+ read_objc_class (gdbarch, subclass, &class_str);
for (;;)
{
unsigned long i;
mlist = read_memory_unsigned_integer (class_str.methods +
- (4 * mlistnum), 4);
+ (4 * mlistnum),
+ 4, byte_order);
if (mlist == 0)
break;
- nmethods = read_objc_methlist_nmethods (mlist);
+ nmethods = read_objc_methlist_nmethods (gdbarch, mlist);
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);
-#endif
+ read_objc_methlist_method (gdbarch, mlist, i, &meth_str);
if (meth_str.name == sel)
/* FIXME: hppa arch was doing a pointer dereference
- here. There needs to be a better way to do that. */
+ here. There needs to be a better way to do that. */
return meth_str.imp;
}
mlistnum++;
}
static CORE_ADDR
-find_implementation (CORE_ADDR object, CORE_ADDR sel)
+find_implementation (struct gdbarch *gdbarch,
+ CORE_ADDR object, CORE_ADDR sel)
{
struct objc_object ostr;
if (object == 0)
return 0;
- read_objc_object (object, &ostr);
+ read_objc_object (gdbarch, object, &ostr);
if (ostr.isa == 0)
return 0;
- return find_implementation_from_class (ostr.isa, sel);
+ return find_implementation_from_class (gdbarch, ostr.isa, sel);
}
-#define OBJC_FETCH_POINTER_ARGUMENT(argi) \
- gdbarch_fetch_pointer_argument (current_gdbarch, get_current_frame (), \
- argi, builtin_type_void_func_ptr)
-
static int
resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc)
{
+ struct frame_info *frame = get_current_frame ();
+ struct gdbarch *gdbarch = get_frame_arch (frame);
+ struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr;
+
CORE_ADDR object;
CORE_ADDR sel;
CORE_ADDR res;
- object = OBJC_FETCH_POINTER_ARGUMENT (0);
- sel = OBJC_FETCH_POINTER_ARGUMENT (1);
+ object = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type);
+ sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type);
- res = find_implementation (object, sel);
+ res = find_implementation (gdbarch, object, sel);
if (new_pc != 0)
*new_pc = res;
if (res == 0)
static int
resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc)
{
+ struct frame_info *frame = get_current_frame ();
+ struct gdbarch *gdbarch = get_frame_arch (frame);
+ struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr;
+
CORE_ADDR object;
CORE_ADDR sel;
CORE_ADDR res;
- object = OBJC_FETCH_POINTER_ARGUMENT (1);
- sel = OBJC_FETCH_POINTER_ARGUMENT (2);
+ object = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type);
+ sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type);
- res = find_implementation (object, sel);
+ res = find_implementation (gdbarch, object, sel);
if (new_pc != 0)
*new_pc = res;
if (res == 0)
static int
resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc)
{
+ struct frame_info *frame = get_current_frame ();
+ struct gdbarch *gdbarch = get_frame_arch (frame);
+ struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr;
+
struct objc_super sstr;
CORE_ADDR super;
CORE_ADDR sel;
CORE_ADDR res;
- super = OBJC_FETCH_POINTER_ARGUMENT (0);
- sel = OBJC_FETCH_POINTER_ARGUMENT (1);
+ super = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type);
+ sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type);
- read_objc_super (super, &sstr);
- if (sstr.class == 0)
+ read_objc_super (gdbarch, super, &sstr);
+ if (sstr.theclass == 0)
return 0;
- res = find_implementation_from_class (sstr.class, sel);
+ res = find_implementation_from_class (gdbarch, sstr.theclass, sel);
if (new_pc != 0)
*new_pc = res;
if (res == 0)
static int
resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc)
{
+ struct frame_info *frame = get_current_frame ();
+ struct gdbarch *gdbarch = get_frame_arch (frame);
+ struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr;
+
struct objc_super sstr;
CORE_ADDR super;
CORE_ADDR sel;
CORE_ADDR res;
- super = OBJC_FETCH_POINTER_ARGUMENT (1);
- sel = OBJC_FETCH_POINTER_ARGUMENT (2);
+ super = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type);
+ sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type);
- read_objc_super (super, &sstr);
- if (sstr.class == 0)
+ read_objc_super (gdbarch, super, &sstr);
+ if (sstr.theclass == 0)
return 0;
- res = find_implementation_from_class (sstr.class, sel);
+ res = find_implementation_from_class (gdbarch, sstr.theclass, sel);
if (new_pc != 0)
*new_pc = res;
if (res == 0)
projects / thirdparty / binutils-gdb.git / blobdiff