/* Java language support routines for GDB, the GNU debugger.
Copyright (C) 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2007, 2008, 2009,
- 2010 Free Software Foundation, Inc.
+ 2010, 2011 Free Software Foundation, Inc.
This file is part of GDB.
#include "dictionary.h"
#include <ctype.h>
#include "gdb_assert.h"
+#include "charset.h"
+#include "valprint.h"
/* Local functions */
static char *java_class_name_from_physname (const char *physname);
static const struct objfile_data *jv_dynamics_objfile_data_key;
-static const struct objfile_data *jv_type_objfile_data_key;
-/* This objfile contains symtabs that have been dynamically created
- to record dynamically loaded Java classes and dynamically
- compiled java methods. */
+/* The dynamic objfile is kept per-program-space. This key lets us
+ associate the objfile with the program space. */
-static struct objfile *dynamics_objfile = NULL;
-
-/* symtab contains classes read from the inferior. */
-
-static struct symtab *class_symtab = NULL;
+static const struct program_space_data *jv_dynamics_progspace_key;
static struct type *java_link_class_type (struct gdbarch *,
struct type *, struct value *);
+/* An instance of this structure is used to store some data that must
+ be freed. */
+
+struct jv_per_objfile_data
+{
+ /* The expandable dictionary we use. */
+ struct dictionary *dict;
+};
+
/* A function called when the dynamics_objfile is freed. We use this
to clean up some internal state. */
static void
-jv_per_objfile_free (struct objfile *objfile, void *ignore)
+jv_per_objfile_free (struct objfile *objfile, void *data)
{
+ struct jv_per_objfile_data *jv_data = data;
+ struct objfile *dynamics_objfile;
+
+ dynamics_objfile = program_space_data (current_program_space,
+ jv_dynamics_progspace_key);
gdb_assert (objfile == dynamics_objfile);
- /* Clean up all our cached state. These objects are all allocated
- in the dynamics_objfile, so we don't need to actually free
- anything. */
- dynamics_objfile = NULL;
- class_symtab = NULL;
+
+ if (jv_data->dict)
+ dict_free (jv_data->dict);
+ xfree (jv_data);
+
+ set_program_space_data (current_program_space,
+ jv_dynamics_progspace_key,
+ NULL);
}
/* FIXME: carlton/2003-02-04: This is the main or only caller of
static struct objfile *
get_dynamics_objfile (struct gdbarch *gdbarch)
{
+ struct objfile *dynamics_objfile;
+
+ dynamics_objfile = program_space_data (current_program_space,
+ jv_dynamics_progspace_key);
+
if (dynamics_objfile == NULL)
{
+ struct jv_per_objfile_data *data;
+
/* Mark it as shared so that it is cleared when the inferior is
re-run. */
dynamics_objfile = allocate_objfile (NULL, OBJF_SHARED);
dynamics_objfile->gdbarch = gdbarch;
- /* We don't have any data to store, but this lets us get a
- notification when the objfile is destroyed. Since we have to
- store a non-NULL value, we just pick something arbitrary and
- safe. */
- set_objfile_data (dynamics_objfile, jv_dynamics_objfile_data_key,
- &dynamics_objfile);
+
+ data = XCNEW (struct jv_per_objfile_data);
+ set_objfile_data (dynamics_objfile, jv_dynamics_objfile_data_key, data);
+
+ set_program_space_data (current_program_space,
+ jv_dynamics_progspace_key,
+ dynamics_objfile);
}
return dynamics_objfile;
}
-static void free_class_block (struct symtab *symtab);
-
static struct symtab *
get_java_class_symtab (struct gdbarch *gdbarch)
{
+ struct objfile *objfile = get_dynamics_objfile (gdbarch);
+ struct symtab *class_symtab = objfile->symtabs;
+
if (class_symtab == NULL)
{
- struct objfile *objfile = get_dynamics_objfile (gdbarch);
struct blockvector *bv;
struct block *bl;
+ struct jv_per_objfile_data *jv_data;
class_symtab = allocate_symtab ("<java-classes>", objfile);
class_symtab->language = language_java;
BLOCKVECTOR_NBLOCKS (bv) = 1;
BLOCKVECTOR (class_symtab) = bv;
- /* Allocate dummy STATIC_BLOCK. */
+ /* Allocate dummy STATIC_BLOCK. */
bl = allocate_block (&objfile->objfile_obstack);
BLOCK_DICT (bl) = dict_create_linear (&objfile->objfile_obstack,
NULL);
bl = allocate_block (&objfile->objfile_obstack);
BLOCK_DICT (bl) = dict_create_hashed_expandable ();
BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl;
- class_symtab->free_func = free_class_block;
+
+ /* Arrange to free the dict. */
+ jv_data = objfile_data (objfile, jv_dynamics_objfile_data_key);
+ jv_data->dict = BLOCK_DICT (bl);
}
return class_symtab;
}
add_class_symbol (struct type *type, CORE_ADDR addr)
{
struct symbol *sym;
+ struct objfile *objfile = get_dynamics_objfile (get_type_arch (type));
sym = (struct symbol *)
- obstack_alloc (&dynamics_objfile->objfile_obstack, sizeof (struct symbol));
+ obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol));
memset (sym, 0, sizeof (struct symbol));
- SYMBOL_LANGUAGE (sym) = language_java;
+ SYMBOL_SET_LANGUAGE (sym, language_java);
SYMBOL_SET_LINKAGE_NAME (sym, TYPE_TAG_NAME (type));
SYMBOL_CLASS (sym) = LOC_TYPEDEF;
/* SYMBOL_VALUE (sym) = valu; */
return sym;
}
-/* Free the dynamic symbols block. */
-static void
-free_class_block (struct symtab *symtab)
-{
- struct blockvector *bv = BLOCKVECTOR (symtab);
- struct block *bl = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
-
- dict_free (BLOCK_DICT (bl));
-}
-
struct type *
java_lookup_class (char *name)
{
sym = lookup_symbol (name, expression_context_block, STRUCT_DOMAIN, NULL);
if (sym != NULL)
return SYMBOL_TYPE (sym);
- /* FIXME - should search inferior's symbol table. */
+ /* FIXME - should search inferior's symbol table. */
return NULL;
}
/* Return a nul-terminated string (allocated on OBSTACK) for
- a name given by NAME (which has type Utf8Const*). */
+ a name given by NAME (which has type Utf8Const*). */
char *
get_java_utf8_name (struct obstack *obstack, struct value *name)
static int
java_class_is_primitive (struct value *clas)
{
- struct value *vtable = value_struct_elt (&clas, NULL, "vtable", NULL, "struct");
+ struct value *vtable = value_struct_elt (&clas, NULL, "vtable",
+ NULL, "struct");
CORE_ADDR i = value_as_address (vtable);
return (int) (i & 0x7fffffff) == (int) 0x7fffffff;
}
-/* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
+/* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
struct type *
type_from_class (struct gdbarch *gdbarch, struct value *clas)
return java_primitive_type (gdbarch, value_as_long (sig));
}
- /* Get Class name. */
- /* if clasloader non-null, prepend loader address. FIXME */
+ /* Get Class name. */
+ /* If clasloader non-null, prepend loader address. FIXME */
temp = clas;
utf8_name = value_struct_elt (&temp, NULL, "name", NULL, "structure");
name = get_java_utf8_name (&objfile->objfile_obstack, utf8_name);
name[namelen] = '\0';
is_array = 1;
temp = clas;
- /* Set array element type. */
+ /* Set array element type. */
temp = value_struct_elt (&temp, NULL, "methods", NULL, "structure");
- deprecated_set_value_type (temp, lookup_pointer_type (value_type (clas)));
+ deprecated_set_value_type (temp,
+ lookup_pointer_type (value_type (clas)));
TYPE_TARGET_TYPE (type) = type_from_class (gdbarch, temp);
}
return java_link_class_type (gdbarch, type, clas);
}
-/* Fill in class TYPE with data from the CLAS value. */
+/* Fill in class TYPE with data from the CLAS value. */
static struct type *
java_link_class_type (struct gdbarch *gdbarch,
ninterfaces = 0;
#else
temp = clas;
- ninterfaces = value_as_long (value_struct_elt (&temp, NULL, "interface_len", NULL, "structure"));
+ ninterfaces = value_as_long (value_struct_elt (&temp, NULL, "interface_len",
+ NULL, "structure"));
#endif
TYPE_N_BASECLASSES (type) = (tsuper == NULL ? 0 : 1) + ninterfaces;
temp = clas;
- nfields = value_as_long (value_struct_elt (&temp, NULL, "field_count", NULL, "structure"));
+ nfields = value_as_long (value_struct_elt (&temp, NULL, "field_count",
+ NULL, "structure"));
nfields += TYPE_N_BASECLASSES (type);
- nfields++; /* Add one for dummy "class" field. */
+ nfields++; /* Add one for dummy "class" field. */
TYPE_NFIELDS (type) = nfields;
TYPE_FIELDS (type) = (struct field *)
TYPE_ALLOC (type, sizeof (struct field) * nfields);
if (i > 2 && name[i - 1] == ']' && tsuper != NULL)
{
/* FIXME */
- TYPE_LENGTH (type) = TYPE_LENGTH (tsuper) + 4; /* size with "length" */
+ TYPE_LENGTH (type) = TYPE_LENGTH (tsuper) + 4; /* size with "length" */
}
else
{
temp = clas;
- temp = value_struct_elt (&temp, NULL, "size_in_bytes", NULL, "structure");
+ temp = value_struct_elt (&temp, NULL, "size_in_bytes",
+ NULL, "structure");
TYPE_LENGTH (type) = value_as_long (temp);
}
fields = NULL;
- nfields--; /* First set up dummy "class" field. */
+ nfields--; /* First set up dummy "class" field. */
SET_FIELD_PHYSADDR (TYPE_FIELD (type, nfields), value_address (clas));
TYPE_FIELD_NAME (type, nfields) = "class";
TYPE_FIELD_TYPE (type, nfields) = value_type (clas);
field = value_ind (fields);
}
else
- { /* Re-use field value for next field. */
+ { /* Re-use field value for next field. */
CORE_ADDR addr
= value_address (field) + TYPE_LENGTH (value_type (field));
TYPE_NFN_FIELDS_TOTAL (type) = nmethods;
j = nmethods * sizeof (struct fn_field);
fn_fields = (struct fn_field *)
- obstack_alloc (&dynamics_objfile->objfile_obstack, j);
+ obstack_alloc (&objfile->objfile_obstack, j);
memset (fn_fields, 0, j);
fn_fieldlists = (struct fn_fieldlist *)
alloca (nmethods * sizeof (struct fn_fieldlist));
if (methods == NULL)
{
temp = clas;
- methods = value_struct_elt (&temp, NULL, "methods", NULL, "structure");
+ methods = value_struct_elt (&temp, NULL, "methods",
+ NULL, "structure");
method = value_ind (methods);
}
else
- { /* Re-use method value for next method. */
+ { /* Re-use method value for next method. */
CORE_ADDR addr
= value_address (method) + TYPE_LENGTH (value_type (method));
set_value_lazy (method, 1);
}
- /* Get method name. */
+ /* Get method name. */
temp = method;
temp = value_struct_elt (&temp, NULL, "name", NULL, "structure");
mname = get_java_utf8_name (&objfile->objfile_obstack, temp);
for (k = 0, j = TYPE_NFN_FIELDS (type);;)
{
if (--j < 0)
- { /* No match - new method name. */
+ { /* No match - new method name. */
j = TYPE_NFN_FIELDS (type)++;
fn_fieldlists[j].name = mname;
fn_fieldlists[j].length = 1;
break;
}
if (strcmp (mname, fn_fieldlists[j].name) == 0)
- { /* Found an existing method with the same name. */
+ { /* Found an existing method with the same name. */
int l;
if (mname != unqualified_name)
obstack_free (&objfile->objfile_obstack, mname);
mname = fn_fieldlists[j].name;
fn_fieldlists[j].length++;
- k = i - k; /* Index of new slot. */
- /* Shift intervening fn_fields (between k and i) down. */
+ k = i - k; /* Index of new slot. */
+ /* Shift intervening fn_fields (between k and i) down. */
for (l = i; l > k; l--)
fn_fields[l] = fn_fields[l - 1];
for (l = TYPE_NFN_FIELDS (type); --l > j;)
j = TYPE_NFN_FIELDS (type) * sizeof (struct fn_fieldlist);
TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
- obstack_alloc (&dynamics_objfile->objfile_obstack, j);
+ obstack_alloc (&objfile->objfile_obstack, j);
memcpy (TYPE_FN_FIELDLISTS (type), fn_fieldlists, j);
return type;
}
-static struct type *java_object_type;
-
-/* A free function that is attached to the objfile defining
- java_object_type. This is used to clear the cached type whenever
- its owning objfile is destroyed. */
-static void
-jv_clear_object_type (struct objfile *objfile, void *ignore)
-{
- java_object_type = NULL;
-}
-
-static void
-set_java_object_type (struct type *type)
-{
- struct objfile *owner;
-
- gdb_assert (java_object_type == NULL);
-
- owner = TYPE_OBJFILE (type);
- if (owner)
- set_objfile_data (owner, jv_type_objfile_data_key, &java_object_type);
- java_object_type = type;
-}
-
struct type *
get_java_object_type (void)
{
- if (java_object_type == NULL)
- {
- struct symbol *sym;
+ struct symbol *sym;
- sym = lookup_symbol ("java.lang.Object", NULL, STRUCT_DOMAIN, NULL);
- if (sym == NULL)
- error (_("cannot find java.lang.Object"));
- set_java_object_type (SYMBOL_TYPE (sym));
- }
- return java_object_type;
+ sym = lookup_symbol ("java.lang.Object", NULL, STRUCT_DOMAIN, NULL);
+ if (sym == NULL)
+ error (_("cannot find java.lang.Object"));
+ return SYMBOL_TYPE (sym);
}
int
name = TYPE_TAG_NAME (ttype);
if (name != NULL && strcmp (name, "java.lang.Object") == 0)
return 1;
- name = TYPE_NFIELDS (ttype) > 0 ? TYPE_FIELD_NAME (ttype, 0) : (char *) 0;
+ name
+ = TYPE_NFIELDS (ttype) > 0 ? TYPE_FIELD_NAME (ttype, 0) : (char *) 0;
if (name != NULL && strcmp (name, "vtable") == 0)
- {
- if (java_object_type == NULL)
- set_java_object_type (type);
- return 1;
- }
+ return 1;
}
return 0;
}
}
/* If name[0 .. namelen-1] is the name of a primitive Java type,
- return that type. Otherwise, return NULL. */
+ return that type. Otherwise, return NULL. */
struct type *
java_primitive_type_from_name (struct gdbarch *gdbarch,
case 'c':
if (namelen == 4 && memcmp (name, "char", 4) == 0)
return builtin->builtin_char;
+ break;
case 'd':
if (namelen == 6 && memcmp (name, "double", 6) == 0)
return builtin->builtin_double;
}
/* Return the length (in bytes) of demangled name of the Java type
- signature string SIGNATURE. */
+ signature string SIGNATURE. */
static int
java_demangled_signature_length (char *signature)
int array = 0;
for (; *signature == '['; signature++)
- array += 2; /* Two chars for "[]". */
+ array += 2; /* Two chars for "[]". */
switch (signature[0])
{
case 'L':
- /* Subtract 2 for 'L' and ';'. */
+ /* Subtract 2 for 'L' and ';'. */
return strlen (signature) - 2 + array;
default:
return strlen (java_primitive_type_name (signature[0])) + array;
}
}
-/* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
+/* Demangle the Java type signature SIGNATURE, leaving the result in
+ RESULT. */
static void
java_demangled_signature_copy (char *result, char *signature)
switch (signature[0])
{
case 'L':
- /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
+ /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
signature++;
ptr = result;
for (; *signature != ';' && *signature != '\0'; signature++)
}
/* Return the demangled name of the Java type signature string SIGNATURE,
- as a freshly allocated copy. */
+ as a freshly allocated copy. */
char *
java_demangle_type_signature (char *signature)
}
/* Return the type of TYPE followed by DIMS pairs of [ ].
- If DIMS == 0, TYPE is returned. */
+ If DIMS == 0, TYPE is returned. */
struct type *
java_array_type (struct type *type, int dims)
{
while (dims-- > 0)
{
- /* FIXME This is bogus! Java arrays are not gdb arrays! */
+ /* FIXME This is bogus! Java arrays are not gdb arrays! */
type = lookup_array_range_type (type, 0, 0);
}
return type;
}
-/* Create a Java string in the inferior from a (Utf8) literal. */
+/* Create a Java string in the inferior from a (Utf8) literal. */
static struct value *
java_value_string (char *ptr, int len)
error (_("not implemented - java_value_string")); /* FIXME */
}
+/* Return the encoding that should be used for the character type
+ TYPE. */
+
+static const char *
+java_get_encoding (struct type *type)
+{
+ struct gdbarch *arch = get_type_arch (type);
+ const char *encoding;
+
+ if (type == builtin_java_type (arch)->builtin_char)
+ {
+ if (gdbarch_byte_order (arch) == BFD_ENDIAN_BIG)
+ encoding = "UTF-16BE";
+ else
+ encoding = "UTF-16LE";
+ }
+ else
+ encoding = target_charset (arch);
+
+ return encoding;
+}
+
/* 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. */
+ characters and strings is language specific. */
static void
java_emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
{
- switch (c)
- {
- case '\\':
- case '\'':
- fprintf_filtered (stream, "\\%c", c);
- break;
- case '\b':
- fputs_filtered ("\\b", stream);
- break;
- case '\t':
- fputs_filtered ("\\t", stream);
- break;
- case '\n':
- fputs_filtered ("\\n", stream);
- break;
- case '\f':
- fputs_filtered ("\\f", stream);
- break;
- case '\r':
- fputs_filtered ("\\r", stream);
- break;
- default:
- if (isprint (c))
- fputc_filtered (c, stream);
- else
- fprintf_filtered (stream, "\\u%.4x", (unsigned int) c);
- break;
- }
+ const char *encoding = java_get_encoding (type);
+
+ generic_emit_char (c, type, stream, quoter, encoding);
+}
+
+/* Implementation of la_printchar method. */
+
+static void
+java_printchar (int c, struct type *type, struct ui_file *stream)
+{
+ fputs_filtered ("'", stream);
+ LA_EMIT_CHAR (c, type, stream, '\'');
+ fputs_filtered ("'", stream);
+}
+
+/* Implementation of la_printstr method. */
+
+static void
+java_printstr (struct ui_file *stream, struct type *type,
+ const gdb_byte *string,
+ unsigned int length, const char *encoding, int force_ellipses,
+ const struct value_print_options *options)
+{
+ const char *type_encoding = java_get_encoding (type);
+
+ if (!encoding || !*encoding)
+ encoding = type_encoding;
+
+ generic_printstr (stream, type, string, length, encoding,
+ force_ellipses, '"', 0, options);
}
static struct value *
type = type_from_class (exp->gdbarch, java_class_from_object (arg1));
arg1 = value_cast (lookup_pointer_type (type), arg1);
}
- if (noside == EVAL_SKIP)
- goto nosideret;
return value_ind (arg1);
case BINOP_SUBSCRIPT:
goto nosideret;
/* If the user attempts to subscript something that is not an
array or pointer type (like a plain int variable for example),
- then report this as an error. */
+ then report this as an error. */
arg1 = coerce_ref (arg1);
type = check_typedef (value_type (arg1));
struct value *clas = java_class_from_object (arg1);
struct value *temp = clas;
- /* Get CLASS_ELEMENT_TYPE of the array type. */
+ /* Get CLASS_ELEMENT_TYPE of the array type. */
temp = value_struct_elt (&temp, NULL, "methods",
NULL, "structure");
deprecated_set_value_type (temp, value_type (clas));
case STRUCTOP_PTR:
arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside);
- /* Convert object field (such as TYPE.class) to reference. */
+ /* Convert object field (such as TYPE.class) to reference. */
if (TYPE_CODE (value_type (arg1)) == TYPE_CODE_STRUCT)
arg1 = value_addr (arg1);
return arg1;
java_parse,
java_error,
null_post_parser,
- c_printchar, /* Print a character constant */
- c_printstr, /* Function to print string constant */
+ java_printchar, /* Print a character constant */
+ java_printstr, /* Function to print string constant */
java_emit_char, /* Function to print a single character */
java_print_type, /* Print a type using appropriate syntax */
default_print_typedef, /* Print a typedef using appropriate syntax */
{
jv_dynamics_objfile_data_key
= register_objfile_data_with_cleanup (NULL, jv_per_objfile_free);
- jv_type_objfile_data_key
- = register_objfile_data_with_cleanup (NULL, jv_clear_object_type);
+ jv_dynamics_progspace_key = register_program_space_data ();
java_type_data = gdbarch_data_register_post_init (build_java_types);