diff options
Diffstat (limited to 'gdb/jv-lang.c')
| -rw-r--r-- | gdb/jv-lang.c | 1272 |
1 files changed, 0 insertions, 1272 deletions
diff --git a/gdb/jv-lang.c b/gdb/jv-lang.c deleted file mode 100644 index 6bf72b9..0000000 --- a/gdb/jv-lang.c +++ /dev/null @@ -1,1272 +0,0 @@ -/* Java language support routines for GDB, the GNU debugger. - - Copyright (C) 1997-2016 Free Software Foundation, Inc. - - This file is part of GDB. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 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, see <http://www.gnu.org/licenses/>. */ - -#include "defs.h" -#include "symtab.h" -#include "gdbtypes.h" -#include "expression.h" -#include "parser-defs.h" -#include "language.h" -#include "symfile.h" -#include "objfiles.h" -#include "value.h" -#include "c-lang.h" -#include "jv-lang.h" -#include "varobj.h" -#include "gdbcore.h" -#include "block.h" -#include "demangle.h" -#include "dictionary.h" -#include <ctype.h> -#include "charset.h" -#include "valprint.h" -#include "cp-support.h" - -/* Local functions */ - -extern void _initialize_java_language (void); - -static int java_demangled_signature_length (const char *); -static void java_demangled_signature_copy (char *, const char *); - -static struct compunit_symtab *get_java_class_symtab (struct gdbarch *gdbarch); -static char *get_java_utf8_name (struct obstack *obstack, struct value *name); -static int java_class_is_primitive (struct value *clas); -static struct value *java_value_string (char *ptr, int len); - -static void java_emit_char (int c, struct type *type, - struct ui_file * stream, int quoter); - -static char *java_class_name_from_physname (const char *physname); - -static const struct objfile_data *jv_dynamics_objfile_data_key; - -/* The dynamic objfile is kept per-program-space. This key lets us - associate the objfile with the program space. */ - -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 *data) -{ - struct jv_per_objfile_data *jv_data = (struct jv_per_objfile_data *) data; - struct objfile *dynamics_objfile; - - dynamics_objfile - = (struct objfile *) program_space_data (current_program_space, - jv_dynamics_progspace_key); - gdb_assert (objfile == dynamics_objfile); - - 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 - allocate_objfile with first argument NULL; as a result, this code - breaks every so often. Somebody should write a test case that - exercises GDB in various ways (e.g. something involving loading a - dynamic library) after this code has been called. */ - -static struct objfile * -get_dynamics_objfile (struct gdbarch *gdbarch) -{ - struct objfile *dynamics_objfile; - - dynamics_objfile - = (struct 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, NULL, - OBJF_SHARED | OBJF_NOT_FILENAME); - dynamics_objfile->per_bfd->gdbarch = gdbarch; - - 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 struct compunit_symtab * -get_java_class_symtab (struct gdbarch *gdbarch) -{ - struct objfile *objfile = get_dynamics_objfile (gdbarch); - struct compunit_symtab *class_symtab = objfile->compunit_symtabs; - - if (class_symtab == NULL) - { - struct blockvector *bv; - struct block *bl; - struct jv_per_objfile_data *jv_data; - - class_symtab = allocate_compunit_symtab (objfile, "<java-classes>"); - add_compunit_symtab_to_objfile (class_symtab); - allocate_symtab (class_symtab, "<java-classes>"); - - COMPUNIT_FILETABS (class_symtab)->language = language_java; - bv = (struct blockvector *) - obstack_alloc (&objfile->objfile_obstack, - sizeof (struct blockvector) + sizeof (struct block *)); - BLOCKVECTOR_NBLOCKS (bv) = 1; - COMPUNIT_BLOCKVECTOR (class_symtab) = bv; - - /* Allocate dummy STATIC_BLOCK. */ - bl = allocate_block (&objfile->objfile_obstack); - BLOCK_DICT (bl) = dict_create_linear (&objfile->objfile_obstack, - NULL); - BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK) = bl; - - /* Allocate GLOBAL_BLOCK. */ - bl = allocate_global_block (&objfile->objfile_obstack); - BLOCK_DICT (bl) = dict_create_hashed_expandable (); - set_block_compunit_symtab (bl, class_symtab); - BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl; - - /* Arrange to free the dict. */ - jv_data = ((struct jv_per_objfile_data *) - objfile_data (objfile, jv_dynamics_objfile_data_key)); - jv_data->dict = BLOCK_DICT (bl); - } - return class_symtab; -} - -static void -add_class_symtab_symbol (struct symbol *sym) -{ - struct compunit_symtab *cust = get_java_class_symtab (symbol_arch (sym)); - const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (cust); - - dict_add_symbol (BLOCK_DICT (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)), sym); -} - -static struct symbol * -add_class_symbol (struct type *type, CORE_ADDR addr) -{ - struct symbol *sym; - struct objfile *objfile = get_dynamics_objfile (get_type_arch (type)); - - sym = allocate_symbol (objfile); - SYMBOL_SET_LANGUAGE (sym, language_java, &objfile->objfile_obstack); - SYMBOL_SET_LINKAGE_NAME (sym, TYPE_TAG_NAME (type)); - SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; - /* SYMBOL_VALUE (sym) = valu; */ - SYMBOL_TYPE (sym) = type; - SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; - SYMBOL_VALUE_ADDRESS (sym) = addr; - return sym; -} - -struct type * -java_lookup_class (char *name) -{ - struct symbol *sym; - - sym = lookup_symbol (name, expression_context_block, STRUCT_DOMAIN, - NULL).symbol; - if (sym != NULL) - return SYMBOL_TYPE (sym); - /* 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*). */ - -char * -get_java_utf8_name (struct obstack *obstack, struct value *name) -{ - char *chrs; - struct value *temp = name; - int name_length; - CORE_ADDR data_addr; - - temp = value_struct_elt (&temp, NULL, "length", NULL, "structure"); - name_length = (int) value_as_long (temp); - data_addr = value_address (temp) + TYPE_LENGTH (value_type (temp)); - chrs = (char *) obstack_alloc (obstack, name_length + 1); - chrs[name_length] = '\0'; - read_memory (data_addr, (gdb_byte *) chrs, name_length); - return chrs; -} - -struct value * -java_class_from_object (struct value *obj_val) -{ - /* This is all rather inefficient, since the offsets of vtable and - class are fixed. FIXME */ - struct value *vtable_val; - - if (TYPE_CODE (value_type (obj_val)) == TYPE_CODE_PTR - && TYPE_LENGTH (TYPE_TARGET_TYPE (value_type (obj_val))) == 0) - obj_val = value_at (get_java_object_type (), - value_as_address (obj_val)); - - vtable_val = value_struct_elt (&obj_val, NULL, "vtable", NULL, "structure"); - return value_struct_elt (&vtable_val, NULL, "class", NULL, "structure"); -} - -/* Check if CLASS_IS_PRIMITIVE(value of clas): */ -static int -java_class_is_primitive (struct value *clas) -{ - 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. */ - -struct type * -type_from_class (struct gdbarch *gdbarch, struct value *clas) -{ - struct type *type; - char *name; - struct value *temp; - struct objfile *objfile; - struct value *utf8_name; - char *nptr; - CORE_ADDR addr; - - type = check_typedef (value_type (clas)); - if (TYPE_CODE (type) == TYPE_CODE_PTR) - { - if (value_logical_not (clas)) - return NULL; - clas = value_ind (clas); - } - addr = value_address (clas); - - objfile = get_dynamics_objfile (gdbarch); - if (java_class_is_primitive (clas)) - { - struct value *sig; - - temp = clas; - sig = value_struct_elt (&temp, NULL, "method_count", NULL, "structure"); - return java_primitive_type (gdbarch, value_as_long (sig)); - } - - /* 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); - for (nptr = name; *nptr != 0; nptr++) - { - if (*nptr == '/') - *nptr = '.'; - } - - type = java_lookup_class (name); - if (type != NULL) - return type; - - type = alloc_type (objfile); - TYPE_CODE (type) = TYPE_CODE_STRUCT; - INIT_CPLUS_SPECIFIC (type); - - if (name[0] == '[') - { - char *signature = name; - int namelen = java_demangled_signature_length (signature); - - if (namelen > strlen (name)) - name = (char *) obstack_alloc (&objfile->objfile_obstack, namelen + 1); - java_demangled_signature_copy (name, signature); - name[namelen] = '\0'; - temp = clas; - /* Set array element type. */ - temp = value_struct_elt (&temp, NULL, "methods", NULL, "structure"); - deprecated_set_value_type (temp, - lookup_pointer_type (value_type (clas))); - TYPE_TARGET_TYPE (type) = type_from_class (gdbarch, temp); - } - - ALLOCATE_CPLUS_STRUCT_TYPE (type); - TYPE_TAG_NAME (type) = name; - - add_class_symtab_symbol (add_class_symbol (type, addr)); - return java_link_class_type (gdbarch, type, clas); -} - -/* Fill in class TYPE with data from the CLAS value. */ - -static struct type * -java_link_class_type (struct gdbarch *gdbarch, - struct type *type, struct value *clas) -{ - struct value *temp; - const char *unqualified_name; - const char *name = TYPE_TAG_NAME (type); - int ninterfaces, nfields, nmethods; - int type_is_object = 0; - struct fn_field *fn_fields; - struct fn_fieldlist *fn_fieldlists; - struct value *fields; - struct value *methods; - struct value *method = NULL; - struct value *field = NULL; - int i, j; - struct objfile *objfile = get_dynamics_objfile (gdbarch); - struct type *tsuper; - - gdb_assert (name != NULL); - unqualified_name = strrchr (name, '.'); - if (unqualified_name == NULL) - unqualified_name = name; - - temp = clas; - temp = value_struct_elt (&temp, NULL, "superclass", NULL, "structure"); - if (strcmp (name, "java.lang.Object") == 0) - { - tsuper = get_java_object_type (); - if (tsuper && TYPE_CODE (tsuper) == TYPE_CODE_PTR) - tsuper = TYPE_TARGET_TYPE (tsuper); - type_is_object = 1; - } - else - tsuper = type_from_class (gdbarch, temp); - -#if 1 - ninterfaces = 0; -#else - temp = clas; - 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 += TYPE_N_BASECLASSES (type); - nfields++; /* Add one for dummy "class" field. */ - TYPE_NFIELDS (type) = nfields; - TYPE_FIELDS (type) = (struct field *) - TYPE_ALLOC (type, sizeof (struct field) * nfields); - - memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); - - TYPE_FIELD_PRIVATE_BITS (type) = - (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); - B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); - - TYPE_FIELD_PROTECTED_BITS (type) = - (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); - B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); - - TYPE_FIELD_IGNORE_BITS (type) = - (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); - B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); - - TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) - TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type))); - B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type)); - - if (tsuper != NULL) - { - TYPE_BASECLASS (type, 0) = tsuper; - if (type_is_object) - SET_TYPE_FIELD_PRIVATE (type, 0); - } - - i = strlen (name); - if (i > 2 && name[i - 1] == ']' && tsuper != NULL) - { - /* FIXME */ - TYPE_LENGTH (type) = TYPE_LENGTH (tsuper) + 4; /* size with "length" */ - } - else - { - temp = clas; - 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. */ - SET_FIELD_PHYSADDR (TYPE_FIELD (type, nfields), value_address (clas)); - TYPE_FIELD_NAME (type, nfields) = "class"; - TYPE_FIELD_TYPE (type, nfields) = value_type (clas); - SET_TYPE_FIELD_PRIVATE (type, nfields); - - for (i = TYPE_N_BASECLASSES (type); i < nfields; i++) - { - int accflags; - int boffset; - - if (fields == NULL) - { - temp = clas; - fields = value_struct_elt (&temp, NULL, "fields", NULL, "structure"); - field = value_ind (fields); - } - else - { /* Re-use field value for next field. */ - CORE_ADDR addr - = value_address (field) + TYPE_LENGTH (value_type (field)); - - set_value_address (field, addr); - set_value_lazy (field, 1); - } - temp = field; - temp = value_struct_elt (&temp, NULL, "name", NULL, "structure"); - TYPE_FIELD_NAME (type, i) = - get_java_utf8_name (&objfile->objfile_obstack, temp); - temp = field; - accflags = value_as_long (value_struct_elt (&temp, NULL, "accflags", - NULL, "structure")); - temp = field; - temp = value_struct_elt (&temp, NULL, "info", NULL, "structure"); - boffset = value_as_long (value_struct_elt (&temp, NULL, "boffset", - NULL, "structure")); - if (accflags & 0x0001) /* public access */ - { - /* ??? */ - } - if (accflags & 0x0002) /* private access */ - { - SET_TYPE_FIELD_PRIVATE (type, i); - } - if (accflags & 0x0004) /* protected access */ - { - SET_TYPE_FIELD_PROTECTED (type, i); - } - if (accflags & 0x0008) /* ACC_STATIC */ - SET_FIELD_PHYSADDR (TYPE_FIELD (type, i), boffset); - else - SET_FIELD_BITPOS (TYPE_FIELD (type, i), 8 * boffset); - if (accflags & 0x8000) /* FIELD_UNRESOLVED_FLAG */ - { - TYPE_FIELD_TYPE (type, i) = get_java_object_type (); /* FIXME */ - } - else - { - struct type *ftype; - - temp = field; - temp = value_struct_elt (&temp, NULL, "type", NULL, "structure"); - ftype = type_from_class (gdbarch, temp); - if (TYPE_CODE (ftype) == TYPE_CODE_STRUCT) - ftype = lookup_pointer_type (ftype); - TYPE_FIELD_TYPE (type, i) = ftype; - } - } - - temp = clas; - nmethods = value_as_long (value_struct_elt (&temp, NULL, "method_count", - NULL, "structure")); - j = nmethods * sizeof (struct fn_field); - fn_fields = (struct fn_field *) - obstack_alloc (&objfile->objfile_obstack, j); - memset (fn_fields, 0, j); - fn_fieldlists = (struct fn_fieldlist *) - alloca (nmethods * sizeof (struct fn_fieldlist)); - - methods = NULL; - for (i = 0; i < nmethods; i++) - { - const char *mname; - int k; - - if (methods == NULL) - { - temp = clas; - methods = value_struct_elt (&temp, NULL, "methods", - NULL, "structure"); - method = value_ind (methods); - } - else - { /* Re-use method value for next method. */ - CORE_ADDR addr - = value_address (method) + TYPE_LENGTH (value_type (method)); - - set_value_address (method, addr); - set_value_lazy (method, 1); - } - - /* Get method name. */ - temp = method; - temp = value_struct_elt (&temp, NULL, "name", NULL, "structure"); - mname = get_java_utf8_name (&objfile->objfile_obstack, temp); - if (strcmp (mname, "<init>") == 0) - mname = unqualified_name; - - /* Check for an existing method with the same name. - * This makes building the fn_fieldslists an O(nmethods**2) - * operation. That could be using hashing, but I doubt it - * is worth it. Note that we do maintain the order of methods - * in the inferior's Method table (as long as that is grouped - * by method name), which I think is desirable. --PB */ - for (k = 0, j = TYPE_NFN_FIELDS (type);;) - { - if (--j < 0) - { /* No match - new method name. */ - j = TYPE_NFN_FIELDS (type)++; - fn_fieldlists[j].name = mname; - fn_fieldlists[j].length = 1; - fn_fieldlists[j].fn_fields = &fn_fields[i]; - k = i; - break; - } - if (strcmp (mname, fn_fieldlists[j].name) == 0) - { /* 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. */ - for (l = i; l > k; l--) - fn_fields[l] = fn_fields[l - 1]; - for (l = TYPE_NFN_FIELDS (type); --l > j;) - fn_fieldlists[l].fn_fields++; - break; - } - k += fn_fieldlists[j].length; - } - fn_fields[k].physname = ""; - fn_fields[k].is_stub = 1; - /* FIXME */ - fn_fields[k].type = lookup_function_type - (builtin_java_type (gdbarch)->builtin_void); - TYPE_CODE (fn_fields[k].type) = TYPE_CODE_METHOD; - } - - j = TYPE_NFN_FIELDS (type) * sizeof (struct fn_fieldlist); - TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) - obstack_alloc (&objfile->objfile_obstack, j); - memcpy (TYPE_FN_FIELDLISTS (type), fn_fieldlists, j); - - return type; -} - -struct type * -get_java_object_type (void) -{ - struct symbol *sym; - - sym = lookup_symbol ("java.lang.Object", NULL, STRUCT_DOMAIN, NULL).symbol; - if (sym == NULL) - error (_("cannot find java.lang.Object")); - return SYMBOL_TYPE (sym); -} - -int -get_java_object_header_size (struct gdbarch *gdbarch) -{ - struct type *objtype = get_java_object_type (); - - if (objtype == NULL) - return (2 * gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT); - else - return TYPE_LENGTH (objtype); -} - -int -is_object_type (struct type *type) -{ - type = check_typedef (type); - if (TYPE_CODE (type) == TYPE_CODE_PTR) - { - struct type *ttype = check_typedef (TYPE_TARGET_TYPE (type)); - const char *name; - if (TYPE_CODE (ttype) != TYPE_CODE_STRUCT) - return 0; - while (TYPE_N_BASECLASSES (ttype) > 0) - ttype = TYPE_BASECLASS (ttype, 0); - 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; - if (name != NULL && strcmp (name, "vtable") == 0) - return 1; - } - return 0; -} - -struct type * -java_primitive_type (struct gdbarch *gdbarch, int signature) -{ - const struct builtin_java_type *builtin = builtin_java_type (gdbarch); - - switch (signature) - { - case 'B': - return builtin->builtin_byte; - case 'S': - return builtin->builtin_short; - case 'I': - return builtin->builtin_int; - case 'J': - return builtin->builtin_long; - case 'Z': - return builtin->builtin_boolean; - case 'C': - return builtin->builtin_char; - case 'F': - return builtin->builtin_float; - case 'D': - return builtin->builtin_double; - case 'V': - return builtin->builtin_void; - } - error (_("unknown signature '%c' for primitive type"), (char) signature); -} - -/* If name[0 .. namelen-1] is the name of a primitive Java type, - return that type. Otherwise, return NULL. */ - -struct type * -java_primitive_type_from_name (struct gdbarch *gdbarch, - const char *name, int namelen) -{ - const struct builtin_java_type *builtin = builtin_java_type (gdbarch); - - switch (name[0]) - { - case 'b': - if (namelen == 4 && memcmp (name, "byte", 4) == 0) - return builtin->builtin_byte; - if (namelen == 7 && memcmp (name, "boolean", 7) == 0) - return builtin->builtin_boolean; - break; - 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; - break; - case 'f': - if (namelen == 5 && memcmp (name, "float", 5) == 0) - return builtin->builtin_float; - break; - case 'i': - if (namelen == 3 && memcmp (name, "int", 3) == 0) - return builtin->builtin_int; - break; - case 'l': - if (namelen == 4 && memcmp (name, "long", 4) == 0) - return builtin->builtin_long; - break; - case 's': - if (namelen == 5 && memcmp (name, "short", 5) == 0) - return builtin->builtin_short; - break; - case 'v': - if (namelen == 4 && memcmp (name, "void", 4) == 0) - return builtin->builtin_void; - break; - } - return NULL; -} - -static char * -java_primitive_type_name (int signature) -{ - switch (signature) - { - case 'B': - return "byte"; - case 'S': - return "short"; - case 'I': - return "int"; - case 'J': - return "long"; - case 'Z': - return "boolean"; - case 'C': - return "char"; - case 'F': - return "float"; - case 'D': - return "double"; - case 'V': - return "void"; - } - error (_("unknown signature '%c' for primitive type"), (char) signature); -} - -/* Return the length (in bytes) of demangled name of the Java type - signature string SIGNATURE. */ - -static int -java_demangled_signature_length (const char *signature) -{ - int array = 0; - - for (; *signature == '['; signature++) - array += 2; /* Two chars for "[]". */ - switch (signature[0]) - { - case 'L': - /* 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. */ - -static void -java_demangled_signature_copy (char *result, const char *signature) -{ - int array = 0; - char *ptr; - int i; - - while (*signature == '[') - { - array++; - signature++; - } - switch (signature[0]) - { - case 'L': - /* Subtract 2 for 'L' and ';', but add 1 for final nul. */ - signature++; - ptr = result; - for (; *signature != ';' && *signature != '\0'; signature++) - { - if (*signature == '/') - *ptr++ = '.'; - else - *ptr++ = *signature; - } - break; - default: - ptr = java_primitive_type_name (signature[0]); - i = strlen (ptr); - strcpy (result, ptr); - ptr = result + i; - break; - } - while (--array >= 0) - { - *ptr++ = '['; - *ptr++ = ']'; - } -} - -/* Return the demangled name of the Java type signature string SIGNATURE, - as a freshly allocated copy. */ - -char * -java_demangle_type_signature (const char *signature) -{ - int length = java_demangled_signature_length (signature); - char *result = (char *) xmalloc (length + 1); - - java_demangled_signature_copy (result, signature); - result[length] = '\0'; - return result; -} - -/* Return the type of TYPE followed by DIMS pairs of [ ]. - 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! */ - type = lookup_array_range_type (type, 0, 0); - } - - return type; -} - -/* 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. */ - -static void -java_emit_char (int c, struct type *type, struct ui_file *stream, int quoter) -{ - 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 * -evaluate_subexp_java (struct type *expect_type, struct expression *exp, - int *pos, enum noside noside) -{ - int pc = *pos; - int i; - const char *name; - enum exp_opcode op = exp->elts[*pos].opcode; - struct value *arg1; - struct value *arg2; - struct type *type; - - switch (op) - { - case UNOP_IND: - if (noside == EVAL_SKIP) - goto standard; - (*pos)++; - arg1 = evaluate_subexp_java (NULL_TYPE, exp, pos, EVAL_NORMAL); - if (is_object_type (value_type (arg1))) - { - struct type *type; - - type = type_from_class (exp->gdbarch, java_class_from_object (arg1)); - arg1 = value_cast (lookup_pointer_type (type), arg1); - } - return value_ind (arg1); - - case BINOP_SUBSCRIPT: - (*pos)++; - arg1 = evaluate_subexp_with_coercion (exp, pos, noside); - arg2 = evaluate_subexp_with_coercion (exp, pos, noside); - if (noside == EVAL_SKIP) - 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. */ - - arg1 = coerce_ref (arg1); - type = check_typedef (value_type (arg1)); - if (TYPE_CODE (type) == TYPE_CODE_PTR) - type = check_typedef (TYPE_TARGET_TYPE (type)); - name = TYPE_NAME (type); - if (name == NULL) - name = TYPE_TAG_NAME (type); - i = name == NULL ? 0 : strlen (name); - if (TYPE_CODE (type) == TYPE_CODE_STRUCT - && i > 2 && name[i - 1] == ']') - { - enum bfd_endian byte_order = gdbarch_byte_order (exp->gdbarch); - CORE_ADDR address; - long length, index; - struct type *el_type; - gdb_byte buf4[4]; - - struct value *clas = java_class_from_object (arg1); - struct value *temp = clas; - /* 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)); - el_type = type_from_class (exp->gdbarch, temp); - if (TYPE_CODE (el_type) == TYPE_CODE_STRUCT) - el_type = lookup_pointer_type (el_type); - - if (noside == EVAL_AVOID_SIDE_EFFECTS) - return value_zero (el_type, VALUE_LVAL (arg1)); - address = value_as_address (arg1); - address += get_java_object_header_size (exp->gdbarch); - read_memory (address, buf4, 4); - length = (long) extract_signed_integer (buf4, 4, byte_order); - index = (long) value_as_long (arg2); - if (index >= length || index < 0) - error (_("array index (%ld) out of bounds (length: %ld)"), - index, length); - address = (address + 4) + index * TYPE_LENGTH (el_type); - return value_at (el_type, address); - } - else if (TYPE_CODE (type) == TYPE_CODE_ARRAY) - { - if (noside == EVAL_AVOID_SIDE_EFFECTS) - return value_zero (TYPE_TARGET_TYPE (type), VALUE_LVAL (arg1)); - else - return value_subscript (arg1, value_as_long (arg2)); - } - if (name) - error (_("cannot subscript something of type `%s'"), name); - else - error (_("cannot subscript requested type")); - - case OP_STRING: - (*pos)++; - i = longest_to_int (exp->elts[pc + 1].longconst); - (*pos) += 3 + BYTES_TO_EXP_ELEM (i + 1); - if (noside == EVAL_SKIP) - goto nosideret; - return java_value_string (&exp->elts[pc + 2].string, i); - - case STRUCTOP_PTR: - arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside); - /* Convert object field (such as TYPE.class) to reference. */ - if (TYPE_CODE (value_type (arg1)) == TYPE_CODE_STRUCT) - arg1 = value_addr (arg1); - return arg1; - default: - break; - } -standard: - return evaluate_subexp_standard (expect_type, exp, pos, noside); -nosideret: - return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, 1); -} - -static char *java_demangle (const char *mangled, int options) -{ - return gdb_demangle (mangled, options | DMGL_JAVA); -} - -/* la_sniff_from_mangled_name for Java. */ - -static int -java_sniff_from_mangled_name (const char *mangled, char **demangled) -{ - *demangled = java_demangle (mangled, DMGL_PARAMS | DMGL_ANSI); - return *demangled != NULL; -} - -/* Find the member function name of the demangled name NAME. NAME - must be a method name including arguments, in order to correctly - locate the last component. - - This function return a pointer to the first dot before the - member function name, or NULL if the name was not of the - expected form. */ - -static const char * -java_find_last_component (const char *name) -{ - const char *p; - - /* Find argument list. */ - p = strchr (name, '('); - - if (p == NULL) - return NULL; - - /* Back up and find first dot prior to argument list. */ - while (p > name && *p != '.') - p--; - - if (p == name) - return NULL; - - return p; -} - -/* Return the name of the class containing method PHYSNAME. */ - -static char * -java_class_name_from_physname (const char *physname) -{ - char *ret = NULL; - const char *end; - char *demangled_name = java_demangle (physname, DMGL_PARAMS | DMGL_ANSI); - - if (demangled_name == NULL) - return NULL; - - end = java_find_last_component (demangled_name); - if (end != NULL) - { - ret = (char *) xmalloc (end - demangled_name + 1); - memcpy (ret, demangled_name, end - demangled_name); - ret[end - demangled_name] = '\0'; - } - - xfree (demangled_name); - return ret; -} - -/* Table mapping opcodes into strings for printing operators - and precedences of the operators. */ - -const struct op_print java_op_print_tab[] = -{ - {",", BINOP_COMMA, PREC_COMMA, 0}, - {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, - {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, - {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, - {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, - {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, - {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, - {"==", BINOP_EQUAL, PREC_EQUAL, 0}, - {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, - {"<=", BINOP_LEQ, PREC_ORDER, 0}, - {">=", BINOP_GEQ, PREC_ORDER, 0}, - {">", BINOP_GTR, PREC_ORDER, 0}, - {"<", BINOP_LESS, PREC_ORDER, 0}, - {">>", BINOP_RSH, PREC_SHIFT, 0}, - {"<<", BINOP_LSH, PREC_SHIFT, 0}, - {"+", BINOP_ADD, PREC_ADD, 0}, - {"-", BINOP_SUB, PREC_ADD, 0}, - {"*", BINOP_MUL, PREC_MUL, 0}, - {"/", BINOP_DIV, PREC_MUL, 0}, - {"%", BINOP_REM, PREC_MUL, 0}, - {"-", UNOP_NEG, PREC_PREFIX, 0}, - {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, - {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, - {"*", UNOP_IND, PREC_PREFIX, 0}, - {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, - {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, - {NULL, OP_NULL, PREC_PREFIX, 0} -}; - -enum java_primitive_types -{ - java_primitive_type_int, - java_primitive_type_short, - java_primitive_type_long, - java_primitive_type_byte, - java_primitive_type_boolean, - java_primitive_type_char, - java_primitive_type_float, - java_primitive_type_double, - java_primitive_type_void, - nr_java_primitive_types -}; - -static void -java_language_arch_info (struct gdbarch *gdbarch, - struct language_arch_info *lai) -{ - const struct builtin_java_type *builtin = builtin_java_type (gdbarch); - - lai->string_char_type = builtin->builtin_char; - lai->primitive_type_vector - = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_java_primitive_types + 1, - struct type *); - lai->primitive_type_vector [java_primitive_type_int] - = builtin->builtin_int; - lai->primitive_type_vector [java_primitive_type_short] - = builtin->builtin_short; - lai->primitive_type_vector [java_primitive_type_long] - = builtin->builtin_long; - lai->primitive_type_vector [java_primitive_type_byte] - = builtin->builtin_byte; - lai->primitive_type_vector [java_primitive_type_boolean] - = builtin->builtin_boolean; - lai->primitive_type_vector [java_primitive_type_char] - = builtin->builtin_char; - lai->primitive_type_vector [java_primitive_type_float] - = builtin->builtin_float; - lai->primitive_type_vector [java_primitive_type_double] - = builtin->builtin_double; - lai->primitive_type_vector [java_primitive_type_void] - = builtin->builtin_void; - - lai->bool_type_symbol = "boolean"; - lai->bool_type_default = builtin->builtin_boolean; -} - -const struct exp_descriptor exp_descriptor_java = -{ - print_subexp_standard, - operator_length_standard, - operator_check_standard, - op_name_standard, - dump_subexp_body_standard, - evaluate_subexp_java -}; - -static const char *java_extensions[] = -{ - ".java", ".class", NULL -}; - -const struct language_defn java_language_defn = -{ - "java", /* Language name */ - "Java", - language_java, - range_check_off, - case_sensitive_on, - array_row_major, - macro_expansion_no, - java_extensions, - &exp_descriptor_java, - java_parse, - java_yyerror, - null_post_parser, - 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 */ - java_val_print, /* Print a value using appropriate syntax */ - java_value_print, /* Print a top-level value */ - default_read_var_value, /* la_read_var_value */ - NULL, /* Language specific skip_trampoline */ - "this", /* name_of_this */ - basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ - basic_lookup_transparent_type,/* lookup_transparent_type */ - java_demangle, /* Language specific symbol demangler */ - java_sniff_from_mangled_name, - java_class_name_from_physname,/* Language specific class name */ - java_op_print_tab, /* expression operators for printing */ - 0, /* not c-style arrays */ - 0, /* String lower bound */ - default_word_break_characters, - default_make_symbol_completion_list, - java_language_arch_info, - default_print_array_index, - default_pass_by_reference, - default_get_string, - NULL, /* la_get_symbol_name_cmp */ - iterate_over_symbols, - &java_varobj_ops, - NULL, - NULL, - LANG_MAGIC -}; - -static void * -build_java_types (struct gdbarch *gdbarch) -{ - struct builtin_java_type *builtin_java_type - = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_java_type); - - builtin_java_type->builtin_int - = arch_integer_type (gdbarch, 32, 0, "int"); - builtin_java_type->builtin_short - = arch_integer_type (gdbarch, 16, 0, "short"); - builtin_java_type->builtin_long - = arch_integer_type (gdbarch, 64, 0, "long"); - builtin_java_type->builtin_byte - = arch_integer_type (gdbarch, 8, 0, "byte"); - builtin_java_type->builtin_boolean - = arch_boolean_type (gdbarch, 8, 0, "boolean"); - builtin_java_type->builtin_char - = arch_character_type (gdbarch, 16, 1, "char"); - builtin_java_type->builtin_float - = arch_float_type (gdbarch, 32, "float", floatformats_ieee_single); - builtin_java_type->builtin_double - = arch_float_type (gdbarch, 64, "double", floatformats_ieee_double); - builtin_java_type->builtin_void - = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void"); - - return builtin_java_type; -} - -static struct gdbarch_data *java_type_data; - -const struct builtin_java_type * -builtin_java_type (struct gdbarch *gdbarch) -{ - return ((const struct builtin_java_type *) - gdbarch_data (gdbarch, java_type_data)); -} - -void -_initialize_java_language (void) -{ - jv_dynamics_objfile_data_key - = register_objfile_data_with_cleanup (NULL, jv_per_objfile_free); - jv_dynamics_progspace_key = register_program_space_data (); - - java_type_data = gdbarch_data_register_post_init (build_java_types); - - add_language (&java_language_defn); -} |