+++ /dev/null
-/* Parser for Java(TM) .class files.
- Copyright (C) 1996, 1998, 1999, 2000, 2001, 2002
- Free Software Foundation, Inc.
-
-This file is part of GNU CC.
-
-GNU CC 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, or (at your option)
-any later version.
-
-GNU CC 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 GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.
-
-Java and all Java-based marks are trademarks or registered trademarks
-of Sun Microsystems, Inc. in the United States and other countries.
-The Free Software Foundation is independent of Sun Microsystems, Inc. */
-
-/* Written by Per Bothner <bothner@cygnus.com> */
-
-#include "config.h"
-#include "system.h"
-#include "tree.h"
-#include "obstack.h"
-#include "flags.h"
-#include "java-except.h"
-#include "input.h"
-#include "java-tree.h"
-#include "toplev.h"
-#include "parse.h"
-#include "ggc.h"
-#include "debug.h"
-#include "assert.h"
-
-#ifdef HAVE_LOCALE_H
-#include <locale.h>
-#endif
-
-#ifdef HAVE_NL_LANGINFO
-#include <langinfo.h>
-#endif
-
-/* A CONSTANT_Utf8 element is converted to an IDENTIFIER_NODE at parse time. */
-#define JPOOL_UTF(JCF, INDEX) CPOOL_UTF(&(JCF)->cpool, INDEX)
-#define JPOOL_UTF_LENGTH(JCF, INDEX) IDENTIFIER_LENGTH (JPOOL_UTF (JCF, INDEX))
-#define JPOOL_UTF_DATA(JCF, INDEX) \
- ((const unsigned char *) IDENTIFIER_POINTER (JPOOL_UTF (JCF, INDEX)))
-#define HANDLE_CONSTANT_Utf8(JCF, INDEX, LENGTH) \
- do { \
- unsigned char save; unsigned char *text; \
- JCF_FILL (JCF, (LENGTH)+1); /* Make sure we read 1 byte beyond string. */ \
- text = (JCF)->read_ptr; \
- save = text[LENGTH]; \
- text[LENGTH] = 0; \
- (JCF)->cpool.data[INDEX] = (jword) get_identifier (text); \
- text[LENGTH] = save; \
- JCF_SKIP (JCF, LENGTH); } while (0)
-
-#include "jcf.h"
-
-extern struct obstack *saveable_obstack;
-extern struct obstack temporary_obstack;
-extern struct obstack permanent_obstack;
-
-/* Set to non-zero value in order to emit class initilization code
- before static field references. */
-extern int always_initialize_class_p;
-
-static tree parse_roots[3] = { NULL_TREE, NULL_TREE, NULL_TREE };
-
-/* The FIELD_DECL for the current field. */
-#define current_field parse_roots[0]
-
-/* The METHOD_DECL for the current method. */
-#define current_method parse_roots[1]
-
-/* A list of file names. */
-#define current_file_list parse_roots[2]
-
-/* The Java archive that provides main_class; the main input file. */
-static struct JCF main_jcf[1];
-
-static struct ZipFile *localToFile;
-
-/* Declarations of some functions used here. */
-static void handle_innerclass_attribute PARAMS ((int count, JCF *));
-static tree give_name_to_class PARAMS ((JCF *jcf, int index));
-static void parse_zip_file_entries PARAMS ((void));
-static void process_zip_dir PARAMS ((FILE *));
-static void parse_source_file_1 PARAMS ((tree, FILE *));
-static void parse_source_file_2 PARAMS ((void));
-static void parse_source_file_3 PARAMS ((void));
-static void parse_class_file PARAMS ((void));
-static void set_source_filename PARAMS ((JCF *, int));
-static void ggc_mark_jcf PARAMS ((void**));
-static void jcf_parse PARAMS ((struct JCF*));
-static void load_inner_classes PARAMS ((tree));
-
-/* Mark (for garbage collection) all the tree nodes that are
- referenced from JCF's constant pool table. Do that only if the JCF
- hasn't been marked finished. */
-
-static void
-ggc_mark_jcf (elt)
- void **elt;
-{
- JCF *jcf = *(JCF**) elt;
- if (jcf != NULL && !jcf->finished)
- {
- CPool *cpool = &jcf->cpool;
- int size = CPOOL_COUNT(cpool);
- int index;
- for (index = 1; index < size; index++)
- {
- int tag = JPOOL_TAG (jcf, index);
- if ((tag & CONSTANT_ResolvedFlag) || tag == CONSTANT_Utf8)
- ggc_mark_tree ((tree) cpool->data[index]);
- }
- }
-}
-
-/* Handle "SourceFile" attribute. */
-
-static void
-set_source_filename (jcf, index)
- JCF *jcf;
- int index;
-{
- tree sfname_id = get_name_constant (jcf, index);
- const char *sfname = IDENTIFIER_POINTER (sfname_id);
- if (input_filename != NULL)
- {
- int old_len = strlen (input_filename);
- int new_len = IDENTIFIER_LENGTH (sfname_id);
- /* Use the current input_filename (derived from the class name)
- if it has a directory prefix, but otherwise matches sfname. */
- if (old_len > new_len
- && strcmp (sfname, input_filename + old_len - new_len) == 0
- && (input_filename[old_len - new_len - 1] == '/'
- || input_filename[old_len - new_len - 1] == '\\'))
- return;
- }
- input_filename = sfname;
- DECL_SOURCE_FILE (TYPE_NAME (current_class)) = sfname;
- if (current_class == main_class) main_input_filename = input_filename;
-}
-
-#define HANDLE_SOURCEFILE(INDEX) set_source_filename (jcf, INDEX)
-
-#define HANDLE_CLASS_INFO(ACCESS_FLAGS, THIS, SUPER, INTERFACES_COUNT) \
-{ tree super_class = SUPER==0 ? NULL_TREE : get_class_constant (jcf, SUPER); \
- current_class = give_name_to_class (jcf, THIS); \
- set_super_info (ACCESS_FLAGS, current_class, super_class, INTERFACES_COUNT);}
-
-#define HANDLE_CLASS_INTERFACE(INDEX) \
- add_interface (current_class, get_class_constant (jcf, INDEX))
-
-#define HANDLE_START_FIELD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
-{ int sig_index = SIGNATURE; \
- current_field = add_field (current_class, get_name_constant (jcf, NAME), \
- parse_signature (jcf, sig_index), ACCESS_FLAGS); \
- set_java_signature (TREE_TYPE (current_field), JPOOL_UTF (jcf, sig_index)); \
- if ((ACCESS_FLAGS) & ACC_FINAL) \
- MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (current_field); \
-}
-
-#define HANDLE_END_FIELDS() \
- (current_field = NULL_TREE)
-
-#define HANDLE_CONSTANTVALUE(INDEX) \
-{ tree constant; int index = INDEX; \
- if (! flag_emit_class_files && JPOOL_TAG (jcf, index) == CONSTANT_String) { \
- tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index)); \
- constant = build_utf8_ref (name); \
- } \
- else \
- constant = get_constant (jcf, index); \
- set_constant_value (current_field, constant); }
-
-#define HANDLE_METHOD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
- (current_method = add_method (current_class, ACCESS_FLAGS, \
- get_name_constant (jcf, NAME), \
- get_name_constant (jcf, SIGNATURE)), \
- DECL_LOCALVARIABLES_OFFSET (current_method) = 0, \
- DECL_LINENUMBERS_OFFSET (current_method) = 0)
-
-#define HANDLE_END_METHODS() \
-{ tree handle_type = CLASS_TO_HANDLE_TYPE (current_class); \
- if (handle_type != current_class) layout_type (handle_type); \
- current_method = NULL_TREE; }
-
-#define HANDLE_CODE_ATTRIBUTE(MAX_STACK, MAX_LOCALS, CODE_LENGTH) \
-{ DECL_MAX_STACK (current_method) = (MAX_STACK); \
- DECL_MAX_LOCALS (current_method) = (MAX_LOCALS); \
- DECL_CODE_LENGTH (current_method) = (CODE_LENGTH); \
- DECL_CODE_OFFSET (current_method) = JCF_TELL (jcf); }
-
-#define HANDLE_LOCALVARIABLETABLE_ATTRIBUTE(COUNT) \
-{ int n = (COUNT); \
- DECL_LOCALVARIABLES_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
- JCF_SKIP (jcf, n * 10); }
-
-#define HANDLE_LINENUMBERTABLE_ATTRIBUTE(COUNT) \
-{ int n = (COUNT); \
- DECL_LINENUMBERS_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
- JCF_SKIP (jcf, n * 4); }
-
-#define HANDLE_EXCEPTIONS_ATTRIBUTE(COUNT) \
-{ \
- int n = COUNT; \
- tree list = DECL_FUNCTION_THROWS (current_method); \
- while (--n >= 0) \
- { \
- tree thrown_class = get_class_constant (jcf, JCF_readu2 (jcf)); \
- list = tree_cons (NULL_TREE, thrown_class, list); \
- } \
- DECL_FUNCTION_THROWS (current_method) = nreverse (list); \
-}
-
-/* Link seen inner classes to their outer context and register the
- inner class to its outer context. They will be later loaded. */
-#define HANDLE_INNERCLASSES_ATTRIBUTE(COUNT) \
- handle_innerclass_attribute (COUNT, jcf)
-
-#define HANDLE_SYNTHETIC_ATTRIBUTE() \
-{ \
- /* Irrelevant decls should have been nullified by the END macros. \
- We only handle the `Synthetic' attribute on method DECLs. \
- DECL_ARTIFICIAL on fields is used for something else (See \
- PUSH_FIELD in java-tree.h) */ \
- if (current_method) \
- DECL_ARTIFICIAL (current_method) = 1; \
-}
-
-#define HANDLE_GCJCOMPILED_ATTRIBUTE() \
-{ \
- if (current_class == object_type_node) \
- jcf->right_zip = 1; \
-}
-
-#include "jcf-reader.c"
-
-static int yydebug;
-
-tree
-parse_signature (jcf, sig_index)
- JCF *jcf;
- int sig_index;
-{
- if (sig_index <= 0 || sig_index >= JPOOL_SIZE (jcf)
- || JPOOL_TAG (jcf, sig_index) != CONSTANT_Utf8)
- abort ();
- else
- return parse_signature_string (JPOOL_UTF_DATA (jcf, sig_index),
- JPOOL_UTF_LENGTH (jcf, sig_index));
-}
-
-void
-java_set_yydebug (value)
- int value;
-{
- yydebug = value;
-}
-
-tree
-get_constant (jcf, index)
- JCF *jcf;
- int index;
-{
- tree value;
- int tag;
- if (index <= 0 || index >= JPOOL_SIZE(jcf))
- goto bad;
- tag = JPOOL_TAG (jcf, index);
- if ((tag & CONSTANT_ResolvedFlag) || tag == CONSTANT_Utf8)
- return (tree) jcf->cpool.data[index];
- switch (tag)
- {
- case CONSTANT_Integer:
- {
- jint num = JPOOL_INT(jcf, index);
- value = build_int_2 (num, num < 0 ? -1 : 0);
- TREE_TYPE (value) = int_type_node;
- break;
- }
- case CONSTANT_Long:
- {
- unsigned HOST_WIDE_INT num = JPOOL_UINT (jcf, index);
- HOST_WIDE_INT lo, hi;
- lshift_double (num, 0, 32, 64, &lo, &hi, 0);
- num = JPOOL_UINT (jcf, index+1);
- add_double (lo, hi, num, 0, &lo, &hi);
- value = build_int_2 (lo, hi);
- TREE_TYPE (value) = long_type_node;
- force_fit_type (value, 0);
- break;
- }
-#if TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT
- case CONSTANT_Float:
- {
- jint num = JPOOL_INT(jcf, index);
- REAL_VALUE_TYPE d;
-#ifdef REAL_ARITHMETIC
- d = REAL_VALUE_FROM_TARGET_SINGLE (num);
-#else
- union { float f; jint i; } u;
- u.i = num;
- d = u.f;
-#endif
- value = build_real (float_type_node, d);
- break;
- }
- case CONSTANT_Double:
- {
- HOST_WIDE_INT num[2];
- REAL_VALUE_TYPE d;
- HOST_WIDE_INT lo, hi;
- num[0] = JPOOL_UINT (jcf, index);
- lshift_double (num[0], 0, 32, 64, &lo, &hi, 0);
- num[0] = JPOOL_UINT (jcf, index+1);
- add_double (lo, hi, num[0], 0, &lo, &hi);
-
- /* Since ereal_from_double expects an array of HOST_WIDE_INT
- in the target's format, we swap the elements for big endian
- targets, unless HOST_WIDE_INT is sufficiently large to
- contain a target double, in which case the 2nd element
- is ignored.
-
- FIXME: Is this always right for cross targets? */
- if (FLOAT_WORDS_BIG_ENDIAN && sizeof(num[0]) < 8)
- {
- num[0] = hi;
- num[1] = lo;
- }
- else
- {
- num[0] = lo;
- num[1] = hi;
- }
-#ifdef REAL_ARITHMETIC
- d = REAL_VALUE_FROM_TARGET_DOUBLE (num);
-#else
- {
- union { double d; jint i[2]; } u;
- u.i[0] = (jint) num[0];
- u.i[1] = (jint) num[1];
- d = u.d;
- }
-#endif
- value = build_real (double_type_node, d);
- break;
- }
-#endif /* TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT */
- case CONSTANT_String:
- {
- tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index));
- const char *utf8_ptr = IDENTIFIER_POINTER (name);
- int utf8_len = IDENTIFIER_LENGTH (name);
- const unsigned char *utf8;
- int i;
-
- /* Check for a malformed Utf8 string. */
- utf8 = (const unsigned char *) utf8_ptr;
- i = utf8_len;
- while (i > 0)
- {
- int char_len = UT8_CHAR_LENGTH (*utf8);
- if (char_len < 0 || char_len > 3 || char_len > i)
- fatal_error ("bad string constant");
-
- utf8 += char_len;
- i -= char_len;
- }
-
- /* Allocate a new string value. */
- value = build_string (utf8_len, utf8_ptr);
- TREE_TYPE (value) = build_pointer_type (string_type_node);
- }
- break;
- default:
- goto bad;
- }
- JPOOL_TAG (jcf, index) = tag | CONSTANT_ResolvedFlag;
- jcf->cpool.data [index] = (jword) value;
- return value;
- bad:
- internal_error ("bad value constant type %d, index %d",
- JPOOL_TAG (jcf, index), index);
-}
-
-tree
-get_name_constant (jcf, index)
- JCF *jcf;
- int index;
-{
- tree name = get_constant (jcf, index);
-
- if (TREE_CODE (name) != IDENTIFIER_NODE)
- abort ();
-
- return name;
-}
-
-/* Handle reading innerclass attributes. If a non zero entry (denoting
- a non anonymous entry) is found, We augment the inner class list of
- the outer context with the newly resolved innerclass. */
-
-static void
-handle_innerclass_attribute (count, jcf)
- int count;
- JCF *jcf;
-{
- int c = (count);
- while (c--)
- {
- /* Read inner_class_info_index. This may be 0 */
- int icii = JCF_readu2 (jcf);
- /* Read outer_class_info_index. If the innerclasses attribute
- entry isn't a member (like an inner class) the value is 0. */
- int ocii = JCF_readu2 (jcf);
- /* Read inner_name_index. If the class we're dealing with is
- an annonymous class, it must be 0. */
- int ini = JCF_readu2 (jcf);
- /* Read the access flag. */
- int acc = JCF_readu2 (jcf);
- /* If icii is 0, don't try to read the class. */
- if (icii >= 0)
- {
- tree class = get_class_constant (jcf, icii);
- tree decl = TYPE_NAME (class);
- /* Skip reading further if ocii is null */
- if (DECL_P (decl) && !CLASS_COMPLETE_P (decl) && ocii)
- {
- tree outer = TYPE_NAME (get_class_constant (jcf, ocii));
- tree alias = (ini ? get_name_constant (jcf, ini) : NULL_TREE);
- set_class_decl_access_flags (acc, decl);
- DECL_CONTEXT (decl) = outer;
- DECL_INNER_CLASS_LIST (outer) =
- tree_cons (decl, alias, DECL_INNER_CLASS_LIST (outer));
- CLASS_COMPLETE_P (decl) = 1;
- }
- }
- }
-}
-
-static tree
-give_name_to_class (jcf, i)
- JCF *jcf;
- int i;
-{
- if (i <= 0 || i >= JPOOL_SIZE (jcf)
- || JPOOL_TAG (jcf, i) != CONSTANT_Class)
- abort ();
- else
- {
- tree this_class;
- int j = JPOOL_USHORT1 (jcf, i);
- /* verify_constant_pool confirmed that j is a CONSTANT_Utf8. */
- tree class_name = unmangle_classname (JPOOL_UTF_DATA (jcf, j),
- JPOOL_UTF_LENGTH (jcf, j));
- this_class = lookup_class (class_name);
- input_filename = DECL_SOURCE_FILE (TYPE_NAME (this_class));
- lineno = 0;
- if (main_input_filename == NULL && jcf == main_jcf)
- main_input_filename = input_filename;
-
- jcf->cpool.data[i] = (jword) this_class;
- JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
- return this_class;
- }
-}
-
-/* Get the class of the CONSTANT_Class whose constant pool index is I. */
-
-tree
-get_class_constant (JCF *jcf , int i)
-{
- tree type;
- if (i <= 0 || i >= JPOOL_SIZE (jcf)
- || (JPOOL_TAG (jcf, i) & ~CONSTANT_ResolvedFlag) != CONSTANT_Class)
- abort ();
-
- if (JPOOL_TAG (jcf, i) != CONSTANT_ResolvedClass)
- {
- int name_index = JPOOL_USHORT1 (jcf, i);
- /* verify_constant_pool confirmed that name_index is a CONSTANT_Utf8. */
- const char *name = JPOOL_UTF_DATA (jcf, name_index);
- int nlength = JPOOL_UTF_LENGTH (jcf, name_index);
-
- if (name[0] == '[') /* Handle array "classes". */
- type = TREE_TYPE (parse_signature_string (name, nlength));
- else
- {
- tree cname = unmangle_classname (name, nlength);
- type = lookup_class (cname);
- }
- jcf->cpool.data[i] = (jword) type;
- JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
- }
- else
- type = (tree) jcf->cpool.data[i];
- return type;
-}
-
-/* Read a class with the fully qualified-name NAME.
- Return 1 iff we read the requested file.
- (It is still possible we failed if the file did not
- define the class it is supposed to.) */
-
-int
-read_class (name)
- tree name;
-{
- JCF this_jcf, *jcf;
- tree icv, class = NULL_TREE;
- tree save_current_class = current_class;
- const char *save_input_filename = input_filename;
- JCF *save_current_jcf = current_jcf;
-
- if ((icv = IDENTIFIER_CLASS_VALUE (name)) != NULL_TREE)
- {
- class = TREE_TYPE (icv);
- jcf = TYPE_JCF (class);
- }
- else
- jcf = NULL;
-
- if (jcf == NULL)
- {
- this_jcf.zipd = NULL;
- jcf = &this_jcf;
- if (find_class (IDENTIFIER_POINTER (name), IDENTIFIER_LENGTH (name),
- &this_jcf, 1) == 0)
- return 0;
- }
-
- current_jcf = jcf;
-
- if (current_jcf->java_source)
- {
- const char *filename = current_jcf->filename;
- tree file;
- FILE *finput;
- int generate;
-
- java_parser_context_save_global ();
- java_push_parser_context ();
- BUILD_FILENAME_IDENTIFIER_NODE (file, filename);
- generate = IS_A_COMMAND_LINE_FILENAME_P (file);
- if (wfl_operator == NULL_TREE)
- wfl_operator = build_expr_wfl (NULL_TREE, NULL, 0, 0);
- EXPR_WFL_FILENAME_NODE (wfl_operator) = file;
- input_filename = ggc_strdup (filename);
- current_class = NULL_TREE;
- current_function_decl = NULL_TREE;
- if (!HAS_BEEN_ALREADY_PARSED_P (file))
- {
- if (!(finput = fopen (input_filename, "r")))
- fatal_io_error ("can't reopen %s", input_filename);
- parse_source_file_1 (file, finput);
- parse_source_file_2 ();
- parse_source_file_3 ();
- if (fclose (finput))
- fatal_io_error ("can't close %s", input_filename);
- }
- JCF_FINISH (current_jcf);
- java_pop_parser_context (generate);
- java_parser_context_restore_global ();
- }
- else
- {
- if (class == NULL_TREE || ! CLASS_PARSED_P (class))
- {
- java_parser_context_save_global ();
- java_push_parser_context ();
- current_class = class;
- input_filename = current_jcf->filename;
- if (JCF_SEEN_IN_ZIP (current_jcf))
- read_zip_member(current_jcf,
- current_jcf->zipd, current_jcf->zipd->zipf);
- jcf_parse (current_jcf);
- class = current_class;
- java_pop_parser_context (0);
- java_parser_context_restore_global ();
- }
- layout_class (class);
- load_inner_classes (class);
- }
-
- current_class = save_current_class;
- input_filename = save_input_filename;
- current_jcf = save_current_jcf;
- return 1;
-}
-
-/* Load CLASS_OR_NAME. CLASS_OR_NAME can be a mere identifier if
- called from the parser, otherwise it's a RECORD_TYPE node. If
- VERBOSE is 1, print error message on failure to load a class. */
-
-/* Replace calls to load_class by having callers call read_class directly
- - and then perhaps rename read_class to load_class. FIXME */
-
-void
-load_class (class_or_name, verbose)
- tree class_or_name;
- int verbose;
-{
- tree name, saved;
- int class_loaded;
-
- /* class_or_name can be the name of the class we want to load */
- if (TREE_CODE (class_or_name) == IDENTIFIER_NODE)
- name = class_or_name;
- /* In some cases, it's a dependency that we process earlier that
- we though */
- else if (TREE_CODE (class_or_name) == TREE_LIST)
- name = TYPE_NAME (TREE_PURPOSE (class_or_name));
- /* Or it's a type in the making */
- else
- name = DECL_NAME (TYPE_NAME (class_or_name));
-
- saved = name;
- while (1)
- {
- char *separator;
-
- if ((class_loaded = read_class (name)))
- break;
-
- /* We failed loading name. Now consider that we might be looking
- for a inner class. */
- if ((separator = strrchr (IDENTIFIER_POINTER (name), '$'))
- || (separator = strrchr (IDENTIFIER_POINTER (name), '.')))
- {
- int c = *separator;
- *separator = '\0';
- name = get_identifier (IDENTIFIER_POINTER (name));
- *separator = c;
- }
- /* Otherwise, we failed, we bail. */
- else
- break;
- }
-
- if (!class_loaded && verbose)
- error ("cannot find file for class %s", IDENTIFIER_POINTER (saved));
-}
-
-/* Parse the .class file JCF. */
-
-void
-jcf_parse (jcf)
- JCF* jcf;
-{
- int i, code;
-
- if (jcf_parse_preamble (jcf) != 0)
- fatal_error ("not a valid Java .class file");
- code = jcf_parse_constant_pool (jcf);
- if (code != 0)
- fatal_error ("error while parsing constant pool");
- code = verify_constant_pool (jcf);
- if (code > 0)
- fatal_error ("error in constant pool entry #%d\n", code);
-
- jcf_parse_class (jcf);
- if (main_class == NULL_TREE)
- main_class = current_class;
- if (! quiet_flag && TYPE_NAME (current_class))
- fprintf (stderr, " %s %s",
- (jcf->access_flags & ACC_INTERFACE) ? "interface" : "class",
- IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))));
- if (CLASS_PARSED_P (current_class))
- {
- /* FIXME - where was first time */
- fatal_error ("reading class %s for the second time from %s",
- IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))),
- jcf->filename);
- }
- CLASS_PARSED_P (current_class) = 1;
-
- for (i = 1; i < JPOOL_SIZE(jcf); i++)
- {
- switch (JPOOL_TAG (jcf, i))
- {
- case CONSTANT_Class:
- get_class_constant (jcf, i);
- break;
- }
- }
-
- code = jcf_parse_fields (jcf);
- if (code != 0)
- fatal_error ("error while parsing fields");
- code = jcf_parse_methods (jcf);
- if (code != 0)
- fatal_error ("error while parsing methods");
- code = jcf_parse_final_attributes (jcf);
- if (code != 0)
- fatal_error ("error while parsing final attributes");
-
- /* The fields of class_type_node are already in correct order. */
- if (current_class != class_type_node && current_class != object_type_node)
- TYPE_FIELDS (current_class) = nreverse (TYPE_FIELDS (current_class));
-
- if (current_class == object_type_node)
- {
- layout_class_methods (object_type_node);
- /* If we don't have the right archive, emit a verbose warning.
- If we're generating bytecode, emit the warning only if
- -fforce-classes-archive-check was specified. */
- if (!jcf->right_zip
- && (!flag_emit_class_files || flag_force_classes_archive_check))
- fatal_error ("the `java.lang.Object' that was found in `%s' didn't have the special zero-length `gnu.gcj.gcj-compiled' attribute. This generally means that your classpath is incorrectly set. Use `info gcj \"Input Options\"' to see the info page describing how to set the classpath", jcf->filename);
- }
- else
- all_class_list = tree_cons (NULL_TREE,
- TYPE_NAME (current_class), all_class_list );
-}
-
-/* If we came across inner classes, load them now. */
-static void
-load_inner_classes (cur_class)
- tree cur_class;
-{
- tree current;
- for (current = DECL_INNER_CLASS_LIST (TYPE_NAME (cur_class)); current;
- current = TREE_CHAIN (current))
- {
- tree name = DECL_NAME (TREE_PURPOSE (current));
- tree decl = IDENTIFIER_GLOBAL_VALUE (name);
- if (decl && ! CLASS_LOADED_P (TREE_TYPE (decl))
- && !CLASS_BEING_LAIDOUT (TREE_TYPE (decl)))
- load_class (name, 1);
- }
-}
-
-void
-init_outgoing_cpool ()
-{
- current_constant_pool_data_ref = NULL_TREE;
- outgoing_cpool = (struct CPool *)xmalloc (sizeof (struct CPool));
- memset (outgoing_cpool, 0, sizeof (struct CPool));
-}
-
-static void
-parse_class_file ()
-{
- tree method, field;
- const char *save_input_filename = input_filename;
- int save_lineno = lineno;
-
- java_layout_seen_class_methods ();
-
- input_filename = DECL_SOURCE_FILE (TYPE_NAME (current_class));
- lineno = 0;
- (*debug_hooks->start_source_file) (lineno, input_filename);
- init_outgoing_cpool ();
-
- /* Currently we always have to emit calls to _Jv_InitClass when
- compiling from class files. */
- always_initialize_class_p = 1;
-
- for (field = TYPE_FIELDS (CLASS_TO_HANDLE_TYPE (current_class));
- field != NULL_TREE; field = TREE_CHAIN (field))
- if (FIELD_STATIC (field))
- DECL_EXTERNAL (field) = 0;
-
- for (method = TYPE_METHODS (CLASS_TO_HANDLE_TYPE (current_class));
- method != NULL_TREE; method = TREE_CHAIN (method))
- {
- JCF *jcf = current_jcf;
-
- if (METHOD_ABSTRACT (method))
- continue;
-
- if (METHOD_NATIVE (method))
- {
- tree arg;
- int decl_max_locals;
-
- if (! flag_jni)
- continue;
- /* We need to compute the DECL_MAX_LOCALS. We need to take
- the wide types into account too. */
- for (arg = TYPE_ARG_TYPES (TREE_TYPE (method)), decl_max_locals = 0;
- arg != end_params_node;
- arg = TREE_CHAIN (arg), decl_max_locals += 1)
- {
- if (TREE_VALUE (arg) && TYPE_IS_WIDE (TREE_VALUE (arg)))
- decl_max_locals += 1;
- }
- DECL_MAX_LOCALS (method) = decl_max_locals;
- start_java_method (method);
- give_name_to_locals (jcf);
- expand_expr_stmt (build_jni_stub (method));
- end_java_method ();
- continue;
- }
-
- if (DECL_CODE_OFFSET (method) == 0)
- {
- current_function_decl = method;
- error ("missing Code attribute");
- continue;
- }
-
- lineno = 0;
- if (DECL_LINENUMBERS_OFFSET (method))
- {
- register int i;
- register unsigned char *ptr;
- JCF_SEEK (jcf, DECL_LINENUMBERS_OFFSET (method));
- linenumber_count = i = JCF_readu2 (jcf);
- linenumber_table = ptr = jcf->read_ptr;
-
- for (ptr += 2; --i >= 0; ptr += 4)
- {
- int line = GET_u2 (ptr);
- /* Set initial lineno lineno to smallest linenumber.
- * Needs to be set before init_function_start. */
- if (lineno == 0 || line < lineno)
- lineno = line;
- }
- }
- else
- {
- linenumber_table = NULL;
- linenumber_count = 0;
- }
-
- start_java_method (method);
-
- note_instructions (jcf, method);
-
- give_name_to_locals (jcf);
-
- /* Actually generate code. */
- expand_byte_code (jcf, method);
-
- end_java_method ();
- }
-
- if (flag_emit_class_files)
- write_classfile (current_class);
-
- finish_class ();
-
- (*debug_hooks->end_source_file) (save_lineno);
- input_filename = save_input_filename;
- lineno = save_lineno;
-}
-
-/* Parse a source file, as pointed by the current value of INPUT_FILENAME. */
-
-static void
-parse_source_file_1 (file, finput)
- tree file;
- FILE *finput;
-{
- int save_error_count = java_error_count;
- /* Mark the file as parsed */
- HAS_BEEN_ALREADY_PARSED_P (file) = 1;
-
- jcf_dependency_add_file (input_filename, 0);
-
- lang_init_source (1); /* Error msgs have no method prototypes */
-
- /* There's no point in trying to find the current encoding unless we
- are going to do something intelligent with it -- hence the test
- for iconv. */
-#if defined (HAVE_LOCALE_H) && defined (HAVE_ICONV) && defined (HAVE_NL_LANGINFO)
- setlocale (LC_CTYPE, "");
- if (current_encoding == NULL)
- current_encoding = nl_langinfo (CODESET);
-#endif
- if (current_encoding == NULL || *current_encoding == '\0')
- current_encoding = DEFAULT_ENCODING;
-
- /* Initialize the parser */
- java_init_lex (finput, current_encoding);
- java_parse_abort_on_error ();
-
- java_parse (); /* Parse and build partial tree nodes. */
- java_parse_abort_on_error ();
-}
-
-/* Process a parsed source file, resolving names etc. */
-
-static void
-parse_source_file_2 ()
-{
- int save_error_count = java_error_count;
- java_complete_class (); /* Parse unsatisfied class decl. */
- java_parse_abort_on_error ();
-}
-
-static void
-parse_source_file_3 ()
-{
- int save_error_count = java_error_count;
- java_check_circular_reference (); /* Check on circular references */
- java_parse_abort_on_error ();
- java_fix_constructors (); /* Fix the constructors */
- java_parse_abort_on_error ();
- java_reorder_fields (); /* Reorder the fields */
-}
-
-void
-add_predefined_file (name)
- tree name;
-{
- predef_filenames = tree_cons (NULL_TREE, name, predef_filenames);
-}
-
-int
-predefined_filename_p (node)
- tree node;
-{
- tree iter;
-
- for (iter = predef_filenames; iter != NULL_TREE; iter = TREE_CHAIN (iter))
- {
- if (TREE_VALUE (iter) == node)
- return 1;
- }
- return 0;
-}
-
-int
-yyparse ()
-{
- int filename_count = 0;
- char *list, *next;
- tree node;
- FILE *finput = NULL;
-
- if (flag_filelist_file)
- {
- int avail = 2000;
- finput = fopen (input_filename, "r");
- if (finput == NULL)
- fatal_io_error ("can't open %s", input_filename);
- list = xmalloc(avail);
- next = list;
- for (;;)
- {
- int count;
- if (avail < 500)
- {
- count = next - list;
- avail = 2 * (count + avail);
- list = xrealloc (list, avail);
- next = list + count;
- avail = avail - count;
- }
- /* Subtract to to guarantee space for final '\0'. */
- count = fread (next, 1, avail - 1, finput);
- if (count == 0)
- {
- if (! feof (finput))
- fatal_io_error ("error closing %s", input_filename);
- *next = '\0';
- break;
- }
- avail -= count;
- next += count;
- }
- fclose (finput);
- finput = NULL;
- }
- else
- list = xstrdup (input_filename);
-
- do
- {
- for (next = list; ; )
- {
- char ch = *next;
- if (ch == '\n' || ch == '\r' || ch == '\t' || ch == ' '
- || ch == '&' /* FIXME */)
- {
- if (next == list)
- {
- next++;
- list = next;
- continue;
- }
- else
- {
- *next++ = '\0';
- break;
- }
- }
- if (ch == '\0')
- {
- next = NULL;
- break;
- }
- next++;
- }
-
- if (list[0])
- {
- char *value;
- tree id;
- int twice = 0;
-
- int len = strlen (list);
-
- obstack_grow0 (&temporary_obstack, list, len);
- value = obstack_finish (&temporary_obstack);
-
- filename_count++;
-
- /* Exclude file that we see twice on the command line. For
- all files except {Class,Error,Object,RuntimeException,String,
- Throwable}.java we can rely on maybe_get_identifier. For
- these files, we need to do a linear search of
- current_file_list. This search happens only for these
- files, presumably only when we're recompiling libgcj. */
-
- if ((id = maybe_get_identifier (value)))
- {
- if (predefined_filename_p (id))
- {
- tree c;
- for (c = current_file_list; c; c = TREE_CHAIN (c))
- if (TREE_VALUE (c) == id)
- twice = 1;
- }
- else
- twice = 1;
- }
-
- if (twice)
- {
- const char *saved_input_filename = input_filename;
- input_filename = value;
- warning ("source file seen twice on command line and will be compiled only once");
- input_filename = saved_input_filename;
- }
- else
- {
- BUILD_FILENAME_IDENTIFIER_NODE (node, value);
- IS_A_COMMAND_LINE_FILENAME_P (node) = 1;
- current_file_list = tree_cons (NULL_TREE, node,
- current_file_list);
- }
- }
- list = next;
- }
- while (next);
-
- if (filename_count == 0)
- warning ("no input file specified");
-
- if (resource_name)
- {
- const char *resource_filename;
-
- /* Only one resource file may be compiled at a time. */
- assert (TREE_CHAIN (current_file_list) == NULL);
-
- resource_filename = IDENTIFIER_POINTER (TREE_VALUE (current_file_list));
- compile_resource_file (resource_name, resource_filename);
-
- return 0;
- }
-
- current_jcf = main_jcf;
- current_file_list = nreverse (current_file_list);
- for (node = current_file_list; node; node = TREE_CHAIN (node))
- {
- unsigned char magic_string[4];
- uint32 magic = 0;
- tree name = TREE_VALUE (node);
-
- /* Skip already parsed files */
- if (HAS_BEEN_ALREADY_PARSED_P (name))
- continue;
-
- /* Close previous descriptor, if any */
- if (finput && fclose (finput))
- fatal_io_error ("can't close input file %s", main_input_filename);
-
- finput = fopen (IDENTIFIER_POINTER (name), "rb");
- if (finput == NULL)
- fatal_io_error ("can't open %s", IDENTIFIER_POINTER (name));
-
-#ifdef IO_BUFFER_SIZE
- setvbuf (finput, (char *) xmalloc (IO_BUFFER_SIZE),
- _IOFBF, IO_BUFFER_SIZE);
-#endif
- input_filename = IDENTIFIER_POINTER (name);
-
- /* Figure what kind of file we're dealing with */
- if (fread (magic_string, 1, 4, finput) == 4)
- {
- fseek (finput, 0L, SEEK_SET);
- magic = GET_u4 (magic_string);
- }
- if (magic == 0xcafebabe)
- {
- CLASS_FILE_P (node) = 1;
- current_jcf = ALLOC (sizeof (JCF));
- JCF_ZERO (current_jcf);
- current_jcf->read_state = finput;
- current_jcf->filbuf = jcf_filbuf_from_stdio;
- jcf_parse (current_jcf);
- TYPE_JCF (current_class) = current_jcf;
- CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
- TREE_PURPOSE (node) = current_class;
- }
- else if (magic == (JCF_u4)ZIPMAGIC)
- {
- ZIP_FILE_P (node) = 1;
- JCF_ZERO (main_jcf);
- main_jcf->read_state = finput;
- main_jcf->filbuf = jcf_filbuf_from_stdio;
- if (open_in_zip (main_jcf, input_filename, NULL, 0) < 0)
- fatal_error ("bad zip/jar file %s", IDENTIFIER_POINTER (name));
- localToFile = SeenZipFiles;
- /* Register all the class defined there. */
- process_zip_dir (main_jcf->read_state);
- parse_zip_file_entries ();
- /*
- for (each entry)
- CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
- */
- }
- else
- {
- JAVA_FILE_P (node) = 1;
- java_push_parser_context ();
- java_parser_context_save_global ();
- parse_source_file_1 (name, finput);
- java_parser_context_restore_global ();
- java_pop_parser_context (1);
- }
- }
-
- for (ctxp = ctxp_for_generation; ctxp; ctxp = ctxp->next)
- {
- input_filename = ctxp->filename;
- parse_source_file_2 ();
- }
-
- for (ctxp = ctxp_for_generation; ctxp; ctxp = ctxp->next)
- {
- input_filename = ctxp->filename;
- parse_source_file_3 ();
- }
-
- for (node = current_file_list; node; node = TREE_CHAIN (node))
- {
- input_filename = IDENTIFIER_POINTER (TREE_VALUE (node));
- if (CLASS_FILE_P (node))
- {
- current_class = TREE_PURPOSE (node);
- current_jcf = TYPE_JCF (current_class);
- layout_class (current_class);
- load_inner_classes (current_class);
- parse_class_file ();
- JCF_FINISH (current_jcf);
- }
- }
- input_filename = main_input_filename;
-
- java_expand_classes ();
- if (!java_report_errors () && !flag_syntax_only)
- {
- emit_register_classes ();
- if (flag_indirect_dispatch)
- emit_offset_symbol_table ();
- }
- return 0;
-}
-
-/* Process all class entries found in the zip file. */
-static void
-parse_zip_file_entries (void)
-{
- struct ZipDirectory *zdir;
- int i;
-
- for (i = 0, zdir = (ZipDirectory *)localToFile->central_directory;
- i < localToFile->count; i++, zdir = ZIPDIR_NEXT (zdir))
- {
- tree class;
-
- /* We don't need to consider those files. */
- if (!zdir->size || !zdir->filename_offset)
- continue;
-
- class = lookup_class (get_identifier (ZIPDIR_FILENAME (zdir)));
- current_jcf = TYPE_JCF (class);
- current_class = class;
-
- if ( !CLASS_LOADED_P (class))
- {
- if (! CLASS_PARSED_P (class))
- {
- read_zip_member(current_jcf, zdir, localToFile);
- jcf_parse (current_jcf);
- }
- layout_class (current_class);
- load_inner_classes (current_class);
- }
-
- if (TYPE_SIZE (current_class) != error_mark_node)
- {
- input_filename = current_jcf->filename;
- parse_class_file ();
- FREE (current_jcf->buffer); /* No longer necessary */
- /* Note: there is a way to free this buffer right after a
- class seen in a zip file has been parsed. The idea is the
- set its jcf in such a way that buffer will be reallocated
- the time the code for the class will be generated. FIXME. */
- }
- }
-}
-
-/* Read all the entries of the zip file, creates a class and a JCF. Sets the
- jcf up for further processing and link it to the created class. */
-
-static void
-process_zip_dir (FILE *finput)
-{
- int i;
- ZipDirectory *zdir;
-
- for (i = 0, zdir = (ZipDirectory *)localToFile->central_directory;
- i < localToFile->count; i++, zdir = ZIPDIR_NEXT (zdir))
- {
- char *class_name, *file_name, *class_name_in_zip_dir;
- tree class;
- JCF *jcf;
- int j;
-
- class_name_in_zip_dir = ZIPDIR_FILENAME (zdir);
-
- /* We choose to not to process entries with a zero size or entries
- not bearing the .class extension. */
- if (!zdir->size || !zdir->filename_offset ||
- strncmp (&class_name_in_zip_dir[zdir->filename_length-6],
- ".class", 6))
- {
- /* So it will be skipped in parse_zip_file_entries */
- zdir->size = 0;
- continue;
- }
-
- class_name = ALLOC (zdir->filename_length+1-6);
- file_name = ALLOC (zdir->filename_length+1);
- jcf = ALLOC (sizeof (JCF));
- JCF_ZERO (jcf);
-
- strncpy (class_name, class_name_in_zip_dir, zdir->filename_length-6);
- class_name [zdir->filename_length-6] = '\0';
- strncpy (file_name, class_name_in_zip_dir, zdir->filename_length);
- file_name [zdir->filename_length] = '\0';
-
- for (j=0; class_name[j]; j++)
- class_name [j] = (class_name [j] == '/' ? '.' : class_name [j]);
-
- /* Yes, we write back the true class name into the zip directory. */
- strcpy (class_name_in_zip_dir, class_name);
- zdir->filename_length = j;
- class = lookup_class (get_identifier (class_name));
-
- jcf->read_state = finput;
- jcf->filbuf = jcf_filbuf_from_stdio;
- jcf->java_source = 0;
- jcf->classname = class_name;
- jcf->filename = file_name;
- jcf->zipd = zdir;
-
- TYPE_JCF (class) = jcf;
- }
-}
-
-/* Initialization. */
-
-void
-init_jcf_parse ()
-{
- /* Register roots with the garbage collector. */
- ggc_add_tree_root (parse_roots, sizeof (parse_roots) / sizeof(tree));
-
- ggc_add_root (¤t_jcf, 1, sizeof (JCF), (void (*)(void *))ggc_mark_jcf);
-
- init_src_parse ();
-}
projects / msp430-gcc.git / blobdiff