diff options
Diffstat (limited to 'gdb/jv-lang.c')
| -rw-r--r-- | gdb/jv-lang.c | 993 |
1 files changed, 0 insertions, 993 deletions
diff --git a/gdb/jv-lang.c b/gdb/jv-lang.c deleted file mode 100644 index 8ada2e7..0000000 --- a/gdb/jv-lang.c +++ /dev/null @@ -1,993 +0,0 @@ -/* Java language support routines for GDB, the GNU debugger. - Copyright 1997, 1998 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 2 of the License, or -(at your option) any later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#include "defs.h" -#include "symtab.h" -#include "gdbtypes.h" -#include "expression.h" -#include "parser-defs.h" -#include "language.h" -#include "gdbtypes.h" -#include "symtab.h" -#include "symfile.h" -#include "objfiles.h" -#include "gdb_string.h" -#include "value.h" -#include "c-lang.h" -#include "jv-lang.h" -#include "gdbcore.h" -#include <ctype.h> - -struct type *java_int_type; -struct type *java_byte_type; -struct type *java_short_type; -struct type *java_long_type; -struct type *java_boolean_type; -struct type *java_char_type; -struct type *java_float_type; -struct type *java_double_type; -struct type *java_void_type; - -static void java_emit_char PARAMS ((int c, GDB_FILE *stream, int quoter)); - -/* This objfile contains symtabs that have been dynamically created - to record dynamically loaded Java classes and dynamically - compiled java methods. */ - -static struct objfile *dynamics_objfile = NULL; - -static struct type *java_link_class_type PARAMS ((struct type *, value_ptr)); - -static struct objfile * -get_dynamics_objfile () -{ - if (dynamics_objfile == NULL) - { - -/* CHECK WITH STU -- edie. Params 3 and 4 are USER_LOADED and IS_SOLIB. - USER_LOADED - used by run_command to remove old objfile entries which - are no longer valid - IS_SOLIB - 1 if the object file is a shared library */ - - dynamics_objfile = allocate_objfile (NULL, 0, 0, 0); - } - return dynamics_objfile; -} - -#if 1 -/* symtab contains classes read from the inferior. */ - -static struct symtab *class_symtab = NULL; - -/* Maximum number of class in class_symtab before relocation is needed. */ - -static int class_symtab_space; - -struct symtab * -get_java_class_symtab () -{ - if (class_symtab == NULL) - { - struct objfile *objfile = get_dynamics_objfile(); - struct blockvector *bv; - struct block *bl; - class_symtab = allocate_symtab ("<java-classes>", objfile); - class_symtab->language = language_java; - bv = (struct blockvector *) - obstack_alloc (&objfile->symbol_obstack, sizeof (struct blockvector)); - BLOCKVECTOR_NBLOCKS (bv) = 1; - BLOCKVECTOR (class_symtab) = bv; - - /* Allocate dummy STATIC_BLOCK. */ - bl = (struct block *) - obstack_alloc (&objfile->symbol_obstack, sizeof (struct block)); - BLOCK_NSYMS (bl) = 0; - BLOCK_START (bl) = 0; - BLOCK_END (bl) = 0; - BLOCK_FUNCTION (bl) = NULL; - BLOCK_SUPERBLOCK (bl) = NULL; - BLOCK_GCC_COMPILED (bl) = 0; - BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK) = bl; - - /* Allocate GLOBAL_BLOCK. This has to be relocatable. */ - class_symtab_space = 128; - bl = (struct block *) - mmalloc (objfile->md, - sizeof (struct block) - + ((class_symtab_space - 1) * sizeof (struct symbol *))); - *bl = *BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); - BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl; - class_symtab->free_ptr = (char *) bl; - } - return class_symtab; -} - -static void -add_class_symtab_symbol (sym) - struct symbol *sym; -{ - struct symtab *symtab = get_java_class_symtab (); - struct blockvector *bv = BLOCKVECTOR (symtab); - struct block *bl = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); - if (BLOCK_NSYMS (bl) >= class_symtab_space) - { - /* Need to re-allocate. */ - class_symtab_space *= 2; - bl = (struct block *) - mrealloc (symtab->objfile->md, bl, - sizeof (struct block) - + ((class_symtab_space - 1) * sizeof (struct symbol *))); - class_symtab->free_ptr = (char *) bl; - BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl; - } - - BLOCK_SYM (bl, BLOCK_NSYMS (bl)) = sym; - BLOCK_NSYMS (bl) = BLOCK_NSYMS (bl) + 1; -} - -struct symbol * -add_class_symbol (type, addr) - struct type *type; - CORE_ADDR addr; -{ - struct symbol *sym; - sym = (struct symbol *) - obstack_alloc (&dynamics_objfile->symbol_obstack, sizeof (struct symbol)); - memset (sym, 0, sizeof (struct symbol)); - SYMBOL_LANGUAGE (sym) = language_java; - SYMBOL_NAME (sym) = TYPE_TAG_NAME (type); - SYMBOL_CLASS (sym) = LOC_TYPEDEF; - /* SYMBOL_VALUE (sym) = valu;*/ - SYMBOL_TYPE (sym) = type; - SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE; - SYMBOL_VALUE_ADDRESS (sym) = addr; - return sym; -} -#endif - -struct type * -java_lookup_class (name) - char *name; -{ - struct symbol *sym; - sym = lookup_symbol (name, expression_context_block, STRUCT_NAMESPACE, - (int *) 0, (struct symtab **) NULL); - if (sym != NULL) - return SYMBOL_TYPE (sym); -#if 0 - CORE_ADDR addr; - if (called from parser) - { - call lookup_class (or similar) in inferior; - if not found: - return NULL; - addr = found in inferior; - } - else - addr = 0; - struct type *type; - type = alloc_type (objfile); - TYPE_CODE (type) = TYPE_CODE_STRUCT; - INIT_CPLUS_SPECIFIC (type); - TYPE_TAG_NAME (type) = obsavestring (name, strlen(name), &objfile->type_obstack); - TYPE_FLAGS (type) |= TYPE_FLAG_STUB; - TYPE ? = addr; - return type; -#else - /* FIXME - should search inferior's symbol table. */ - return NULL; -#endif -} - -/* Return a nul-terminated string (allocated on OBSTACK) for - a name given by NAME (which has type Utf8Const*). */ - -char * -get_java_utf8_name (obstack, name) - struct obstack *obstack; - value_ptr name; -{ - char *chrs; - value_ptr 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) + VALUE_OFFSET (temp) - + TYPE_LENGTH (VALUE_TYPE (temp)); - chrs = obstack_alloc (obstack, name_length+1); - chrs [name_length] = '\0'; - read_memory_section (data_addr, chrs, name_length, NULL); - return chrs; -} - -value_ptr -java_class_from_object (obj_val) - value_ptr obj_val; -{ - /* This is all rather inefficient, since the offsets of dtable and - class are fixed. FIXME */ - value_ptr dtable_val; - - if (TYPE_CODE (VALUE_TYPE (obj_val)) == TYPE_CODE_PTR - && TYPE_LENGTH (TYPE_TARGET_TYPE (VALUE_TYPE (obj_val))) == 0) - { - struct symbol *sym; - sym = lookup_symbol ("Hjava_lang_Object", NULL, STRUCT_NAMESPACE, - (int *) 0, (struct symtab **) NULL); - if (sym != NULL) - obj_val = value_at (VALUE_TYPE (sym), - value_as_pointer (obj_val), NULL); - } - - dtable_val = value_struct_elt (&obj_val, NULL, "dtable", NULL, "structure"); - return value_struct_elt (&dtable_val, NULL, "class", NULL, "structure"); -} - -/* Check if CLASS_IS_PRIMITIVE(value of clas): */ -int -java_class_is_primitive (clas) - value_ptr clas; -{ - value_ptr dtable = value_struct_elt (&clas, NULL, "dtable", NULL, "struct"); - CORE_ADDR i = value_as_pointer (dtable); - return (int) (i & 0x7fffffff) == (int) 0x7fffffff; -} - -/* Read a Kaffe Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */ - -struct type * -type_from_class (clas) - value_ptr clas; -{ - struct type *type; - char *name; - value_ptr temp; - struct objfile *objfile; - value_ptr utf8_name; - char *nptr; - CORE_ADDR addr; - struct block *bl; - int i; - int is_array = 0; - - 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) + VALUE_OFFSET (clas); - -#if 0 - get_java_class_symtab (); - bl = BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab), GLOBAL_BLOCK); - for (i = BLOCK_NSYMS (bl); --i >= 0; ) - { - struct symbol *sym = BLOCK_SYM (bl, i); - if (SYMBOL_VALUE_ADDRESS (sym) == addr) - return SYMBOL_TYPE (sym); - } -#endif - - objfile = get_dynamics_objfile(); - if (java_class_is_primitive (clas)) - { - value_ptr sig; - temp = clas; - sig = value_struct_elt (&temp, NULL, "msize", NULL, "structure"); - return java_primitive_type (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->type_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] == '[') - { - is_array = 1; - temp = clas; - /* Set array element type. */ - temp = value_struct_elt (&temp, NULL, "methods", NULL, "structure"); - VALUE_TYPE (temp) = lookup_pointer_type (VALUE_TYPE (clas)); - TYPE_TARGET_TYPE (type) = type_from_class (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 (type, clas); -} - -/* Fill in class TYPE with data from the CLAS value. */ - -struct type * -java_link_class_type (type, clas) - struct type *type; - value_ptr clas; -{ - value_ptr temp; - char *unqualified_name; - 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; - value_ptr fields, field, method, methods; - int i, j; - struct objfile *objfile = get_dynamics_objfile(); - struct type *tsuper; - - unqualified_name = strrchr (name, '.'); - if (unqualified_name == NULL) - unqualified_name = name; - - temp = clas; - temp = value_struct_elt (&temp, NULL, "superclass", NULL, "structure"); - if (name != NULL && 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 (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, "nfields", 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); - } - - - if (name[0] == '[' && tsuper != NULL) - { - TYPE_LENGTH (type) = TYPE_LENGTH (tsuper) + 4; /* size with "length" */ - } - else - { - temp = clas; - temp = value_struct_elt (&temp, NULL, "bfsize", 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) + VALUE_OFFSET (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. */ - VALUE_ADDRESS (field) += TYPE_LENGTH (VALUE_TYPE (field)); - 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->type_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 - TYPE_FIELD_BITPOS (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 (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, "nmethods", - NULL, "structure")); - TYPE_NFN_FIELDS_TOTAL (type) = nmethods; - j = nmethods * sizeof (struct fn_field); - fn_fields = (struct fn_field*) - obstack_alloc (&dynamics_objfile->symbol_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++) - { - 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. */ - VALUE_ADDRESS (method) += TYPE_LENGTH (VALUE_TYPE (method)); - VALUE_LAZY (method) = 1; - } - - /* Get method name. */ - temp = method; - temp = value_struct_elt (&temp, NULL, "name", NULL, "structure"); - mname = get_java_utf8_name (&objfile->type_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->type_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; - fn_fields[k].type = make_function_type (java_void_type, NULL); /* FIXME*/ - 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 (&dynamics_objfile->symbol_obstack, j); - memcpy (TYPE_FN_FIELDLISTS (type), fn_fieldlists, j); - - return type; -} - -static struct type *java_object_type; - -struct type * -get_java_object_type () -{ - return java_object_type; -} - -int -is_object_type (type) - struct type *type; -{ - CHECK_TYPEDEF (type); - if (TYPE_CODE (type) == TYPE_CODE_PTR) - { - struct type *ttype = check_typedef (TYPE_TARGET_TYPE (type)); - 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, "dtable") == 0) - { - if (java_object_type == NULL) - java_object_type = type; - return 1; - } - } - return 0; -} - -struct type* -java_primitive_type (signature) - int signature; -{ - switch (signature) - { - case 'B': return java_byte_type; - case 'S': return java_short_type; - case 'I': return java_int_type; - case 'J': return java_long_type; - case 'Z': return java_boolean_type; - case 'C': return java_char_type; - case 'F': return java_float_type; - case 'D': return java_double_type; - case 'V': return java_void_type; - } - error ("unknown signature '%c' for primitive type", (char) signature); -} - -/* Return the demangled name of the Java type signature string SIGNATURE, - as a freshly allocated copy. */ - -char * -java_demangle_type_signature (signature) - char *signature; -{ - int array = 0; - char *result; - char *ptr; - int i; - while (*signature == '[') - { - array++; - signature++; - } - switch (signature[0]) - { - case 'L': - /* Substract 2 for 'L' and ';', but add 1 for final nul. */ - result = xmalloc (strlen (signature) - 1 + 2 * array); - signature++; - ptr = result; - for ( ; *signature != ';' && *signature != '\0'; signature++) - { - if (*signature == '/') - *ptr++ = '.'; - else - *ptr++ = *signature; - } - break; - default: - ptr = TYPE_NAME (java_primitive_type (signature[0])); - i = strlen (ptr); - result = xmalloc (i + 1 + 2 * array); - strcpy (result, ptr); - ptr = result + i; - break; - } - while (--array >= 0) - { - *ptr++ = '['; - *ptr++ = ']'; - } - *ptr = '\0'; - return result; -} - -struct type * -java_lookup_type (signature) - char *signature; -{ - switch (signature[0]) - { - case 'L': - case '[': - error ("java_lookup_type not fully inmplemented"); - default: - return java_primitive_type (signature[0]); - } -} - -/* Return the type of TYPE followed by DIMS pairs of [ ]. - If DIMS == 0, TYPE is returned. */ - -struct type * -java_array_type (type, dims) - struct type *type; - int dims; -{ - struct type *range_type; - - while (dims-- > 0) - { - range_type = create_range_type (NULL, builtin_type_int, 0, 0); - - type = create_array_type (NULL, type, range_type); - } - - return type; -} - -/* Create a Java string in the inferior from a (Utf8) literal. */ - -value_ptr -java_value_string (ptr, len) - char *ptr; - int len; -{ - error ("not implemented - java_value_string"); /* FIXME */ -} - -/* 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 (c, stream, quoter) - int c; - GDB_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; - } -} - -static value_ptr -evaluate_subexp_java (expect_type, exp, pos, noside) - struct type *expect_type; - register struct expression *exp; - register int *pos; - enum noside noside; -{ - int pc = *pos; - int i; - char *name; - enum exp_opcode op = exp->elts[*pos].opcode; - value_ptr arg1, arg2; - struct type *type; - switch (op) - { - case UNOP_IND: - if (noside == EVAL_SKIP) - goto standard; - (*pos)++; - arg1 = evaluate_subexp_standard (expect_type, exp, pos, EVAL_NORMAL); - if (is_object_type (VALUE_TYPE (arg1))) - { - struct type *type = type_from_class (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: - (*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. */ - - COERCE_REF (arg1); - type = check_typedef (VALUE_TYPE (arg1)); - name = TYPE_NAME (type); - if (TYPE_CODE (type) == TYPE_CODE_PTR) - { - type = check_typedef (TYPE_TARGET_TYPE (type)); - if (TYPE_CODE (type) == TYPE_CODE_STRUCT - && TYPE_TAG_NAME (type) != NULL - && TYPE_TAG_NAME (type)[0] == '[') - { - CORE_ADDR address; - long length, index; - struct type *el_type; - char buf4[4]; - - value_ptr clas = java_class_from_object(arg1); - value_ptr temp = clas; - /* Get CLASS_ELEMENT_TYPE of the array type. */ - temp = value_struct_elt (&temp, NULL, "methods", - NULL, "structure"); - VALUE_TYPE (temp) = VALUE_TYPE (clas); - el_type = type_from_class (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_pointer (arg1); - address += JAVA_OBJECT_SIZE; - read_memory (address, buf4, 4); - length = (long) extract_signed_integer (buf4, 4); - 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, NULL); - } - } - 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, arg2); - } - if (name == NULL) - name == TYPE_TAG_NAME (type); - 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_STRUCT: - 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_long, (LONGEST) 1); -} - -static struct type * -java_create_fundamental_type (objfile, typeid) - struct objfile *objfile; - int typeid; -{ - switch (typeid) - { - case FT_VOID: return java_void_type; - case FT_BOOLEAN: return java_boolean_type; - case FT_CHAR: return java_char_type; - case FT_FLOAT: return java_float_type; - case FT_DBL_PREC_FLOAT: return java_double_type; - case FT_BYTE: case FT_SIGNED_CHAR: return java_byte_type; - case FT_SHORT: case FT_SIGNED_SHORT: return java_short_type; - case FT_INTEGER: case FT_SIGNED_INTEGER: return java_int_type; - case FT_LONG: case FT_SIGNED_LONG: return java_long_type; - } - return c_create_fundamental_type (objfile, typeid); -} - -/* 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}, -#if 0 - {">>>", BINOP_???, PREC_SHIFT, 0}, -#endif - {"+", 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}, -#if 0 - {"instanceof", ???, ???, 0}, -#endif - {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, - {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, - {NULL, 0, 0, 0} -}; - -const struct language_defn java_language_defn = { - "java", /* Language name */ - language_java, - c_builtin_types, - range_check_off, - type_check_off, - java_parse, - java_error, - evaluate_subexp_java, - c_printchar, /* Print a character constant */ - c_printstr, /* Function to print string constant */ - java_emit_char, /* Function to print a single character */ - java_create_fundamental_type, /* Create fundamental type in this language */ - java_print_type, /* Print a type using appropriate syntax */ - java_val_print, /* Print a value using appropriate syntax */ - java_value_print, /* Print a top-level value */ - {"", "", "", ""}, /* Binary format info */ - {"0%lo", "0", "o", ""}, /* Octal format info */ - {"%ld", "", "d", ""}, /* Decimal format info */ - {"0x%lx", "0x", "x", ""}, /* Hex format info */ - java_op_print_tab, /* expression operators for printing */ - 0, /* not c-style arrays */ - 0, /* String lower bound */ - &builtin_type_char, /* Type of string elements */ - LANG_MAGIC -}; - -void -_initialize_java_language () -{ - - java_int_type = init_type (TYPE_CODE_INT, 4, 0, "int", NULL); - java_short_type = init_type (TYPE_CODE_INT, 2, 0, "short", NULL); - java_long_type = init_type (TYPE_CODE_INT, 8, 0, "long", NULL); - java_byte_type = init_type (TYPE_CODE_INT, 1, 0, "byte", NULL); - java_boolean_type= init_type (TYPE_CODE_BOOL, 1, 0, "boolean", NULL); - java_char_type = init_type (TYPE_CODE_CHAR, 2, 0, "char", NULL); - java_float_type = init_type (TYPE_CODE_FLT, 4, 0, "float", NULL); - java_double_type = init_type (TYPE_CODE_FLT, 8, 0, "double", NULL); - java_void_type = init_type (TYPE_CODE_VOID, 1, 0, "void", NULL); - - add_language (&java_language_defn); -} - -/* Cleanup code that should be run on every "run". - We should use make_run_cleanup to have this be called. - But will that mess up values in value histry? FIXME */ - -void java_rerun_cleanup () -{ - if (class_symtab != NULL) - { - free_symtab (class_symtab); /* ??? */ - class_symtab = NULL; - } - if (dynamics_objfile != NULL) - { - free_objfile (dynamics_objfile); - dynamics_objfile = NULL; - } - - java_object_type = NULL; -} |