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| author | Dan Albert <danalbert@google.com> | 2015-10-13 16:28:19 -0700 | 
|---|---|---|
| committer | Dan Albert <danalbert@google.com> | 2015-10-13 16:28:19 -0700 | 
| commit | a8c075f72b231c37823661ba0d7d082a21cd39d9 (patch) | |
| tree | 395aa3b848d56037292e50466643453485073018 /gcc-4.8/gcc/java/expr.c | |
| parent | 5aff2e0142aca13849b4e51de503e71d5010efa6 (diff) | |
| download | toolchain_gcc-a8c075f72b231c37823661ba0d7d082a21cd39d9.zip toolchain_gcc-a8c075f72b231c37823661ba0d7d082a21cd39d9.tar.gz toolchain_gcc-a8c075f72b231c37823661ba0d7d082a21cd39d9.tar.bz2 | |
Remove gcc-4.8.
Change-Id: Iee9c6985c613f58c82e33a91722d371579eb290f
Diffstat (limited to 'gcc-4.8/gcc/java/expr.c')
| -rw-r--r-- | gcc-4.8/gcc/java/expr.c | 3745 | 
1 files changed, 0 insertions, 3745 deletions
| diff --git a/gcc-4.8/gcc/java/expr.c b/gcc-4.8/gcc/java/expr.c deleted file mode 100644 index b71d8a0..0000000 --- a/gcc-4.8/gcc/java/expr.c +++ /dev/null @@ -1,3745 +0,0 @@ -/* Process expressions for the GNU compiler for the Java(TM) language. -   Copyright (C) 1996-2013 Free Software Foundation, Inc. - -This file is part of GCC. - -GCC 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, or (at your option) -any later version. - -GCC 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 GCC; see the file COPYING3.  If not see -<http://www.gnu.org/licenses/>.   - -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.  */ - -/* Hacked by Per Bothner <bothner@cygnus.com> February 1996. */ - -#include "config.h" -#include "system.h" -#include "coretypes.h" -#include "tm.h"			/* For INT_TYPE_SIZE, -				   TARGET_VTABLE_USES_DESCRIPTORS, -				   BITS_PER_UNIT, -				   MODIFY_JNI_METHOD_CALL and -				   PARM_BOUNDARY.  */ -				    -#include "tree.h" -#include "flags.h" -#include "java-tree.h" -#include "javaop.h" -#include "java-opcodes.h" -#include "jcf.h" -#include "java-except.h" -#include "parse.h" -#include "diagnostic-core.h" -#include "ggc.h" -#include "tree-iterator.h" -#include "target.h" - -static void flush_quick_stack (void); -static void push_value (tree); -static tree pop_value (tree); -static void java_stack_swap (void); -static void java_stack_dup (int, int); -static void build_java_athrow (tree); -static void build_java_jsr (int, int); -static void build_java_ret (tree); -static void expand_java_multianewarray (tree, int); -static void expand_java_arraystore (tree); -static void expand_java_arrayload (tree); -static void expand_java_array_length (void); -static tree build_java_monitor (tree, tree); -static void expand_java_pushc (int, tree); -static void expand_java_return (tree); -static void expand_load_internal (int, tree, int); -static void expand_java_NEW (tree); -static void expand_java_INSTANCEOF (tree); -static void expand_java_CHECKCAST (tree); -static void expand_iinc (unsigned int, int, int); -static void expand_java_binop (tree, enum tree_code); -static void note_label (int, int); -static void expand_compare (enum tree_code, tree, tree, int); -static void expand_test (enum tree_code, tree, int); -static void expand_cond (enum tree_code, tree, int); -static void expand_java_goto (int); -static tree expand_java_switch (tree, int); -static void expand_java_add_case (tree, int, int); -static vec<tree, va_gc> *pop_arguments (tree);  -static void expand_invoke (int, int, int);  -static void expand_java_field_op (int, int, int);  -static void java_push_constant_from_pool (struct JCF *, int);  -static void java_stack_pop (int);  -static tree build_java_throw_out_of_bounds_exception (tree);  -static tree build_java_check_indexed_type (tree, tree);  -static unsigned char peek_opcode_at_pc (struct JCF *, int, int); -static void promote_arguments (void); -static void cache_cpool_data_ref (void); - -static GTY(()) tree operand_type[59]; - -static GTY(()) tree methods_ident; -static GTY(()) tree ncode_ident; -tree dtable_ident = NULL_TREE; - -/* Set to nonzero value in order to emit class initialization code -   before static field references.  */ -int always_initialize_class_p = 0; - -/* We store the stack state in two places: -   Within a basic block, we use the quick_stack, which is a vec of expression -   nodes. -   This is the top part of the stack;  below that we use find_stack_slot. -   At the end of a basic block, the quick_stack must be flushed -   to the stack slot array (as handled by find_stack_slot). -   Using quick_stack generates better code (especially when -   compiled without optimization), because we do not have to -   explicitly store and load trees to temporary variables. - -   If a variable is on the quick stack, it means the value of variable -   when the quick stack was last flushed.  Conceptually, flush_quick_stack -   saves all the quick_stack elements in parallel.  However, that is -   complicated, so it actually saves them (i.e. copies each stack value -   to is home virtual register) from low indexes.  This allows a quick_stack -   element at index i (counting from the bottom of stack the) to references -   slot virtuals for register that are >= i, but not those that are deeper. -   This convention makes most operations easier.  For example iadd works -   even when the stack contains (reg[0], reg[1]):  It results in the -   stack containing (reg[0]+reg[1]), which is OK.  However, some stack -   operations are more complicated.  For example dup given a stack -   containing (reg[0]) would yield (reg[0], reg[0]), which would violate -   the convention, since stack value 1 would refer to a register with -   lower index (reg[0]), which flush_quick_stack does not safely handle. -   So dup cannot just add an extra element to the quick_stack, but iadd can. -*/ - -static GTY(()) vec<tree, va_gc> *quick_stack; - -/* The physical memory page size used in this computer.  See -   build_field_ref().  */ -static GTY(()) tree page_size; - -/* The stack pointer of the Java virtual machine. -   This does include the size of the quick_stack. */ - -int stack_pointer; - -const unsigned char *linenumber_table; -int linenumber_count; - -/* Largest pc so far in this method that has been passed to lookup_label. */ -int highest_label_pc_this_method = -1; - -/* Base value for this method to add to pc to get generated label. */ -int start_label_pc_this_method = 0; - -void -init_expr_processing (void) -{ -  operand_type[21] = operand_type[54] = int_type_node; -  operand_type[22] = operand_type[55] = long_type_node; -  operand_type[23] = operand_type[56] = float_type_node; -  operand_type[24] = operand_type[57] = double_type_node; -  operand_type[25] = operand_type[58] = ptr_type_node; -} - -tree -java_truthvalue_conversion (tree expr) -{ -  /* It is simpler and generates better code to have only TRUTH_*_EXPR -     or comparison expressions as truth values at this level. - -     This function should normally be identity for Java.  */ - -  switch (TREE_CODE (expr)) -    { -    case EQ_EXPR:   case NE_EXPR:   case UNEQ_EXPR: case LTGT_EXPR: -    case LE_EXPR:   case GE_EXPR:   case LT_EXPR:   case GT_EXPR: -    case UNLE_EXPR: case UNGE_EXPR: case UNLT_EXPR: case UNGT_EXPR: -    case ORDERED_EXPR: case UNORDERED_EXPR: -    case TRUTH_ANDIF_EXPR: -    case TRUTH_ORIF_EXPR: -    case TRUTH_AND_EXPR: -    case TRUTH_OR_EXPR: -    case TRUTH_XOR_EXPR: -    case TRUTH_NOT_EXPR: -    case ERROR_MARK: -      return expr; - -    case INTEGER_CST: -      return integer_zerop (expr) ? boolean_false_node : boolean_true_node; - -    case REAL_CST: -      return real_zerop (expr) ? boolean_false_node : boolean_true_node; - -    /* are these legal? XXX JH */ -    case NEGATE_EXPR: -    case ABS_EXPR: -    case FLOAT_EXPR: -      /* These don't change whether an object is nonzero or zero.  */ -      return java_truthvalue_conversion (TREE_OPERAND (expr, 0)); - -    case COND_EXPR: -      /* Distribute the conversion into the arms of a COND_EXPR.  */ -      return fold_build3 (COND_EXPR, boolean_type_node, TREE_OPERAND (expr, 0), -			  java_truthvalue_conversion (TREE_OPERAND (expr, 1)), -			  java_truthvalue_conversion (TREE_OPERAND (expr, 2))); - -    case NOP_EXPR: -      /* If this is widening the argument, we can ignore it.  */ -      if (TYPE_PRECISION (TREE_TYPE (expr)) -          >= TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (expr, 0)))) -        return java_truthvalue_conversion (TREE_OPERAND (expr, 0)); -      /* fall through to default */ - -    default: -      return fold_build2 (NE_EXPR, boolean_type_node, -			  expr, boolean_false_node); -    } -} - -/* Save any stack slots that happen to be in the quick_stack into their -   home virtual register slots. - -   The copy order is from low stack index to high, to support the invariant -   that the expression for a slot may contain decls for stack slots with -   higher (or the same) index, but not lower. */ - -static void -flush_quick_stack (void) -{ -  int stack_index = stack_pointer; -  unsigned ix; -  tree t; - -  /* Count the number of slots the quick stack is holding.  */ -  for (ix = 0; vec_safe_iterate (quick_stack, ix, &t); ix++) -    stack_index -= 1 + TYPE_IS_WIDE (TREE_TYPE (t)); - -  for (ix = 0; vec_safe_iterate (quick_stack, ix, &t); ix++) -    { -      tree decl, type = TREE_TYPE (t); - -      decl = find_stack_slot (stack_index, type); -      if (decl != t) -	java_add_stmt (build2 (MODIFY_EXPR, TREE_TYPE (t), decl, t)); -      stack_index += 1 + TYPE_IS_WIDE (type); -    } - -  vec_safe_truncate (quick_stack, 0); -} - -/* Push TYPE on the type stack. -   Return true on success, 0 on overflow. */ - -int -push_type_0 (tree type) -{ -  int n_words; -  type = promote_type (type); -  n_words = 1 + TYPE_IS_WIDE (type); -  if (stack_pointer + n_words > DECL_MAX_STACK (current_function_decl)) -    return 0; -  /* Allocate decl for this variable now, so we get a temporary that -     survives the whole method. */ -  find_stack_slot (stack_pointer, type); -  stack_type_map[stack_pointer++] = type; -  n_words--; -  while (--n_words >= 0) -    stack_type_map[stack_pointer++] = TYPE_SECOND; -  return 1; -} - -void -push_type (tree type) -{ -  int r = push_type_0 (type); -  gcc_assert (r); -} - -static void -push_value (tree value) -{ -  tree type = TREE_TYPE (value); -  if (TYPE_PRECISION (type) < 32 && INTEGRAL_TYPE_P (type)) -    { -      type = promote_type (type); -      value = convert (type, value); -    } -  push_type (type); -  vec_safe_push (quick_stack, value); - -  /* If the value has a side effect, then we need to evaluate it -     whether or not the result is used.  If the value ends up on the -     quick stack and is then popped, this won't happen -- so we flush -     the quick stack.  It is safest to simply always flush, though, -     since TREE_SIDE_EFFECTS doesn't capture COMPONENT_REF, and for -     the latter we may need to strip conversions.  */ -  flush_quick_stack (); -} - -/* Pop a type from the type stack. -   TYPE is the expected type.   Return the actual type, which must be -   convertible to TYPE. -   On an error, *MESSAGEP is set to a freshly malloc'd error message. */ - -tree -pop_type_0 (tree type, char **messagep) -{ -  int n_words; -  tree t; -  *messagep = NULL; -  if (TREE_CODE (type) == RECORD_TYPE) -    type = promote_type (type); -  n_words = 1 + TYPE_IS_WIDE (type); -  if (stack_pointer < n_words) -    { -      *messagep = xstrdup ("stack underflow"); -      return type; -    } -  while (--n_words > 0) -    { -      if (stack_type_map[--stack_pointer] != void_type_node) -	{ -	  *messagep = xstrdup ("Invalid multi-word value on type stack"); -	  return type; -	} -    } -  t = stack_type_map[--stack_pointer]; -  if (type == NULL_TREE || t == type) -    return t; -  if (TREE_CODE (t) == TREE_LIST) -    {       -      do -	{ -	  tree tt = TREE_PURPOSE (t); -	  if (! can_widen_reference_to (tt, type)) -	    { -	      t = tt; -	      goto fail; -	    } -	  t = TREE_CHAIN (t); -	} -      while (t); -      return t; -    } -  if (INTEGRAL_TYPE_P (type) && INTEGRAL_TYPE_P (t) -      && TYPE_PRECISION (type) <= 32 && TYPE_PRECISION (t) <= 32) -    return t; -  if (TREE_CODE (type) == POINTER_TYPE && TREE_CODE (t) == POINTER_TYPE) -    { -      /* If the expected type we've been passed is object or ptr -	 (i.e. void*), the caller needs to know the real type.  */ -      if (type == ptr_type_node || type == object_ptr_type_node) -        return t; - -      /* Since the verifier has already run, we know that any -	 types we see will be compatible.  In BC mode, this fact -	 may be checked at runtime, but if that is so then we can -	 assume its truth here as well.  So, we always succeed -	 here, with the expected type.  */ -      return type; -    } - -  if (! flag_verify_invocations && flag_indirect_dispatch -      && t == object_ptr_type_node) -    { -      if (type != ptr_type_node) -	warning (0, "need to insert runtime check for %s",  -		 xstrdup (lang_printable_name (type, 0))); -      return type; -    } - -  /* lang_printable_name uses a static buffer, so we must save the result -     from calling it the first time.  */ - fail: -  { -    char *temp = xstrdup (lang_printable_name (type, 0)); -    /* If the stack contains a multi-word type, keep popping the stack until  -       the real type is found.  */ -    while (t == void_type_node) -      t = stack_type_map[--stack_pointer]; -    *messagep = concat ("expected type '", temp, -			"' but stack contains '", lang_printable_name (t, 0), -			"'", NULL); -    free (temp); -  } -  return type; -} - -/* Pop a type from the type stack. -   TYPE is the expected type.  Return the actual type, which must be -   convertible to TYPE, otherwise call error. */ - -tree -pop_type (tree type) -{ -  char *message = NULL; -  type = pop_type_0 (type, &message); -  if (message != NULL) -    { -      error ("%s", message); -      free (message); -    } -  return type; -} - - -/* Return true if two type assertions are equal.  */ - -static int -type_assertion_eq (const void * k1_p, const void * k2_p) -{ -  const type_assertion k1 = *(const type_assertion *)k1_p; -  const type_assertion k2 = *(const type_assertion *)k2_p; -  return (k1.assertion_code == k2.assertion_code -          && k1.op1 == k2.op1 -	  && k1.op2 == k2.op2); -} - -/* Hash a type assertion.  */ - -static hashval_t -type_assertion_hash (const void *p) -{ -  const type_assertion *k_p = (const type_assertion *) p; -  hashval_t hash = iterative_hash (&k_p->assertion_code, sizeof -				   k_p->assertion_code, 0); - -  switch (k_p->assertion_code) -    { -    case JV_ASSERT_TYPES_COMPATIBLE: -      hash = iterative_hash (&TYPE_UID (k_p->op2), sizeof TYPE_UID (k_p->op2), -			     hash); -      /* Fall through.  */ - -    case JV_ASSERT_IS_INSTANTIABLE: -      hash = iterative_hash (&TYPE_UID (k_p->op1), sizeof TYPE_UID (k_p->op1), -			     hash); -      /* Fall through.  */ - -    case JV_ASSERT_END_OF_TABLE: -      break; - -    default: -      gcc_unreachable (); -    } - -  return hash; -} - -/* Add an entry to the type assertion table for the given class.   -   KLASS is the class for which this assertion will be evaluated by the  -   runtime during loading/initialization. -   ASSERTION_CODE is the 'opcode' or type of this assertion: see java-tree.h. -   OP1 and OP2 are the operands. The tree type of these arguments may be -   specific to each assertion_code. */ - -void -add_type_assertion (tree klass, int assertion_code, tree op1, tree op2) -{ -  htab_t assertions_htab; -  type_assertion as; -  void **as_pp; - -  assertions_htab = TYPE_ASSERTIONS (klass); -  if (assertions_htab == NULL) -    { -      assertions_htab = htab_create_ggc (7, type_assertion_hash,  -					 type_assertion_eq, NULL); -      TYPE_ASSERTIONS (current_class) = assertions_htab; -    } - -  as.assertion_code = assertion_code; -  as.op1 = op1; -  as.op2 = op2; - -  as_pp = htab_find_slot (assertions_htab, &as, INSERT); - -  /* Don't add the same assertion twice.  */ -  if (*as_pp) -    return; - -  *as_pp = ggc_alloc_type_assertion (); -  **(type_assertion **)as_pp = as; -} - - -/* Return 1 if SOURCE_TYPE can be safely widened to TARGET_TYPE. -   Handles array types and interfaces.  */ - -int -can_widen_reference_to (tree source_type, tree target_type) -{ -  if (source_type == ptr_type_node || target_type == object_ptr_type_node) -    return 1; - -  /* Get rid of pointers  */ -  if (TREE_CODE (source_type) == POINTER_TYPE) -    source_type = TREE_TYPE (source_type); -  if (TREE_CODE (target_type) == POINTER_TYPE) -    target_type = TREE_TYPE (target_type); - -  if (source_type == target_type) -    return 1; - -  /* FIXME: This is very pessimistic, in that it checks everything, -     even if we already know that the types are compatible.  If we're -     to support full Java class loader semantics, we need this. -     However, we could do something more optimal.  */ -  if (! flag_verify_invocations) -    { -      add_type_assertion (current_class, JV_ASSERT_TYPES_COMPATIBLE,  -			  source_type, target_type); - -      if (!quiet_flag) -       warning (0, "assert: %s is assign compatible with %s",  -		xstrdup (lang_printable_name (target_type, 0)), -		xstrdup (lang_printable_name (source_type, 0))); -      /* Punt everything to runtime.  */ -      return 1; -    } - -  if (TYPE_DUMMY (source_type) || TYPE_DUMMY (target_type)) -    { -      return 1; -    } -  else -    { -      if (TYPE_ARRAY_P (source_type) || TYPE_ARRAY_P (target_type)) -	{ -	  HOST_WIDE_INT source_length, target_length; -	  if (TYPE_ARRAY_P (source_type) != TYPE_ARRAY_P (target_type)) -	    { -	      /* An array implements Cloneable and Serializable.  */ -	      tree name = DECL_NAME (TYPE_NAME (target_type)); -	      return (name == java_lang_cloneable_identifier_node -		      || name == java_io_serializable_identifier_node); -	    } -	  target_length = java_array_type_length (target_type); -	  if (target_length >= 0) -	    { -	      source_length = java_array_type_length (source_type); -	      if (source_length != target_length) -		return 0; -	    } -	  source_type = TYPE_ARRAY_ELEMENT (source_type); -	  target_type = TYPE_ARRAY_ELEMENT (target_type); -	  if (source_type == target_type) -	    return 1; -	  if (TREE_CODE (source_type) != POINTER_TYPE -	      || TREE_CODE (target_type) != POINTER_TYPE) -	    return 0; -	  return can_widen_reference_to (source_type, target_type); -	} -      else -	{ -	  int source_depth = class_depth (source_type); -	  int target_depth = class_depth (target_type); - -	  if (TYPE_DUMMY (source_type) || TYPE_DUMMY (target_type)) -	    { -	      if (! quiet_flag) -		warning (0, "assert: %s is assign compatible with %s",  -			 xstrdup (lang_printable_name (target_type, 0)), -			 xstrdup (lang_printable_name (source_type, 0))); -	      return 1; -	    } - - 	  /* class_depth can return a negative depth if an error occurred */ -	  if (source_depth < 0 || target_depth < 0) -	    return 0; - -	  if (CLASS_INTERFACE (TYPE_NAME (target_type))) -	    { -	      /* target_type is OK if source_type or source_type ancestors -		 implement target_type. We handle multiple sub-interfaces  */ -	      tree binfo, base_binfo; -	      int i; - -	      for (binfo = TYPE_BINFO (source_type), i = 0; -		   BINFO_BASE_ITERATE (binfo, i, base_binfo); i++) -	        if (can_widen_reference_to -		    (BINFO_TYPE (base_binfo), target_type)) -		  return 1; -	       -	      if (!i) -		return 0; -	    } - -	  for ( ; source_depth > target_depth;  source_depth--)  -	    { -	      source_type -		= BINFO_TYPE (BINFO_BASE_BINFO (TYPE_BINFO (source_type), 0)); -	    } -	  return source_type == target_type; -	} -    } -} - -static tree -pop_value (tree type) -{ -  type = pop_type (type); -  if (vec_safe_length (quick_stack) != 0) -    return quick_stack->pop (); -  else -    return find_stack_slot (stack_pointer, promote_type (type)); -} - - -/* Pop and discard the top COUNT stack slots. */ - -static void -java_stack_pop (int count) -{ -  while (count > 0) -    { -      tree type; - -      gcc_assert (stack_pointer != 0); - -      type = stack_type_map[stack_pointer - 1]; -      if (type == TYPE_SECOND) -	{ -	  count--; -	  gcc_assert (stack_pointer != 1 && count > 0); - -	  type = stack_type_map[stack_pointer - 2]; -	} -      pop_value (type); -      count--; -    } -} - -/* Implement the 'swap' operator (to swap two top stack slots). */ - -static void -java_stack_swap (void) -{ -  tree type1, type2; -  tree temp; -  tree decl1, decl2; - -  if (stack_pointer < 2 -      || (type1 = stack_type_map[stack_pointer - 1]) == TYPE_SECOND -      || (type2 = stack_type_map[stack_pointer - 2]) == TYPE_SECOND -      || TYPE_IS_WIDE (type1) || TYPE_IS_WIDE (type2)) -    /* Bad stack swap.  */ -    abort (); -  /* Bad stack swap.  */ - -  flush_quick_stack (); -  decl1 = find_stack_slot (stack_pointer - 1, type1); -  decl2 = find_stack_slot (stack_pointer - 2, type2); -  temp = build_decl (input_location, VAR_DECL, NULL_TREE, type1); -  java_add_local_var (temp); -  java_add_stmt (build2 (MODIFY_EXPR, type1, temp, decl1)); -  java_add_stmt (build2 (MODIFY_EXPR, type2,  -			 find_stack_slot (stack_pointer - 1, type2), -			 decl2)); -  java_add_stmt (build2 (MODIFY_EXPR, type1,  -			 find_stack_slot (stack_pointer - 2, type1), -			 temp)); -  stack_type_map[stack_pointer - 1] = type2; -  stack_type_map[stack_pointer - 2] = type1; -} - -static void -java_stack_dup (int size, int offset) -{ -  int low_index = stack_pointer - size - offset; -  int dst_index; -  if (low_index < 0) -    error ("stack underflow - dup* operation"); - -  flush_quick_stack (); - -  stack_pointer += size; -  dst_index = stack_pointer; - -  for (dst_index = stack_pointer;  --dst_index >= low_index; ) -    { -      tree type; -      int src_index = dst_index - size; -      if (src_index < low_index) -	src_index = dst_index + size + offset; -      type = stack_type_map [src_index]; -      if (type == TYPE_SECOND) -	{ -	  /* Dup operation splits 64-bit number.  */ -	  gcc_assert (src_index > low_index); - -	  stack_type_map[dst_index] = type; -	  src_index--;  dst_index--; -	  type = stack_type_map[src_index]; -	  gcc_assert (TYPE_IS_WIDE (type)); -	} -      else -	gcc_assert (! TYPE_IS_WIDE (type)); - -      if (src_index != dst_index) -	{ -	  tree src_decl = find_stack_slot (src_index, type); -	  tree dst_decl = find_stack_slot (dst_index, type); - -	  java_add_stmt  -	    (build2 (MODIFY_EXPR, TREE_TYPE (dst_decl), dst_decl, src_decl)); -	  stack_type_map[dst_index] = type; -	} -    } -} - -/* Calls _Jv_Throw or _Jv_Sjlj_Throw.  Discard the contents of the -   value stack. */ - -static void -build_java_athrow (tree node) -{ -  tree call; - -  call = build_call_nary (void_type_node, -			  build_address_of (throw_node), -			  1, node); -  TREE_SIDE_EFFECTS (call) = 1; -  java_add_stmt (call); -  java_stack_pop (stack_pointer); -} - -/* Implementation for jsr/ret */ - -static void -build_java_jsr (int target_pc, int return_pc) -{ -  tree where =  lookup_label (target_pc); -  tree ret = lookup_label (return_pc); -  tree ret_label = fold_build1 (ADDR_EXPR, return_address_type_node, ret); -  push_value (ret_label); -  flush_quick_stack (); -  java_add_stmt (build1 (GOTO_EXPR, void_type_node, where)); - -  /* Do not need to emit the label here.  We noted the existence of the -     label as a jump target in note_instructions; we'll emit the label -     for real at the beginning of the expand_byte_code loop.  */ -} - -static void -build_java_ret (tree location) -{ -  java_add_stmt (build1 (GOTO_EXPR, void_type_node, location)); -} -  -/* Implementation of operations on array: new, load, store, length */ - -tree -decode_newarray_type (int atype) -{ -  switch (atype) -    { -    case 4:  return boolean_type_node; -    case 5:  return char_type_node; -    case 6:  return float_type_node; -    case 7:  return double_type_node; -    case 8:  return byte_type_node; -    case 9:  return short_type_node; -    case 10: return int_type_node; -    case 11: return long_type_node; -    default: return NULL_TREE; -    } -} - -/* Map primitive type to the code used by OPCODE_newarray. */ - -int -encode_newarray_type (tree type) -{ -  if (type == boolean_type_node) -    return 4; -  else if (type == char_type_node) -    return 5; -  else if (type == float_type_node) -    return 6; -  else if (type == double_type_node) -    return 7; -  else if (type == byte_type_node) -    return 8; -  else if (type == short_type_node) -    return 9; -  else if (type == int_type_node) -    return 10; -  else if (type == long_type_node) -    return 11; -  else -    gcc_unreachable (); -} - -/* Build a call to _Jv_ThrowBadArrayIndex(), the -   ArrayIndexOfBoundsException exception handler.  */ - -static tree -build_java_throw_out_of_bounds_exception (tree index) -{ -  tree node; - -  /* We need to build a COMPOUND_EXPR because _Jv_ThrowBadArrayIndex() -     has void return type.  We cannot just set the type of the CALL_EXPR below -     to int_type_node because we would lose it during gimplification.  */ -  gcc_assert (VOID_TYPE_P (TREE_TYPE (TREE_TYPE (soft_badarrayindex_node)))); -  node = build_call_nary (void_type_node, -			       build_address_of (soft_badarrayindex_node), -			       1, index); -  TREE_SIDE_EFFECTS (node) = 1; - -  node = build2 (COMPOUND_EXPR, int_type_node, node, integer_zero_node); -  TREE_SIDE_EFFECTS (node) = 1;	/* Allows expansion within ANDIF */ - -  return (node); -} - -/* Return the length of an array. Doesn't perform any checking on the nature -   or value of the array NODE. May be used to implement some bytecodes.  */ - -tree -build_java_array_length_access (tree node) -{ -  tree type = TREE_TYPE (node); -  tree array_type = TREE_TYPE (type); -  HOST_WIDE_INT length; - -  if (!is_array_type_p (type)) -    { -      /* With the new verifier, we will see an ordinary pointer type -	 here.  In this case, we just use an arbitrary array type.  */ -      array_type = build_java_array_type (object_ptr_type_node, -1); -      type = promote_type (array_type); -    } - -  length = java_array_type_length (type); -  if (length >= 0) -    return build_int_cst (NULL_TREE, length); - -  node = build3 (COMPONENT_REF, int_type_node, -		 build_java_indirect_ref (array_type, node, -					  flag_check_references), -		 lookup_field (&array_type, get_identifier ("length")), -		 NULL_TREE); -  IS_ARRAY_LENGTH_ACCESS (node) = 1; -  return node; -} - -/* Optionally checks a reference against the NULL pointer.  ARG1: the -   expr, ARG2: we should check the reference.  Don't generate extra -   checks if we're not generating code.  */ - -tree  -java_check_reference (tree expr, int check) -{ -  if (!flag_syntax_only && check) -    { -      expr = save_expr (expr); -      expr = build3 (COND_EXPR, TREE_TYPE (expr), -		     build2 (EQ_EXPR, boolean_type_node, -			     expr, null_pointer_node), -		     build_call_nary (void_type_node,  -				      build_address_of (soft_nullpointer_node), -				      0), -		     expr); -    } - -  return expr; -} - -/* Reference an object: just like an INDIRECT_REF, but with checking.  */ - -tree -build_java_indirect_ref (tree type, tree expr, int check) -{ -  tree t; -  t = java_check_reference (expr, check); -  t = convert (build_pointer_type (type), t); -  return build1 (INDIRECT_REF, type, t); -} - -/* Implement array indexing (either as l-value or r-value). -   Returns a tree for ARRAY[INDEX], assume TYPE is the element type. -   Optionally performs bounds checking and/or test to NULL. -   At this point, ARRAY should have been verified as an array.  */ - -tree -build_java_arrayaccess (tree array, tree type, tree index) -{ -  tree node, throw_expr = NULL_TREE; -  tree data_field; -  tree ref; -  tree array_type = TREE_TYPE (TREE_TYPE (array)); -  tree size_exp = fold_convert (sizetype, size_in_bytes (type)); - -  if (!is_array_type_p (TREE_TYPE (array))) -    { -      /* With the new verifier, we will see an ordinary pointer type -	 here.  In this case, we just use the correct array type.  */ -      array_type = build_java_array_type (type, -1); -    } - -  if (flag_bounds_check) -    { -      /* Generate: -       * (unsigned jint) INDEX >= (unsigned jint) LEN -       *    && throw ArrayIndexOutOfBoundsException. -       * Note this is equivalent to and more efficient than: -       * INDEX < 0 || INDEX >= LEN && throw ... */ -      tree test; -      tree len = convert (unsigned_int_type_node, -			  build_java_array_length_access (array)); -      test = fold_build2 (GE_EXPR, boolean_type_node,  -			  convert (unsigned_int_type_node, index), -			  len); -      if (! integer_zerop (test)) -	{ -	  throw_expr -	    = build2 (TRUTH_ANDIF_EXPR, int_type_node, test, -		      build_java_throw_out_of_bounds_exception (index)); -	  /* allows expansion within COMPOUND */ -	  TREE_SIDE_EFFECTS( throw_expr ) = 1; -	} -    } - -  /* If checking bounds, wrap the index expr with a COMPOUND_EXPR in order -     to have the bounds check evaluated first. */ -  if (throw_expr != NULL_TREE) -    index = build2 (COMPOUND_EXPR, int_type_node, throw_expr, index); - -  data_field = lookup_field (&array_type, get_identifier ("data")); - -  ref = build3 (COMPONENT_REF, TREE_TYPE (data_field),     -		build_java_indirect_ref (array_type, array,  -					 flag_check_references), -		data_field, NULL_TREE); - -  /* Take the address of the data field and convert it to a pointer to -     the element type.  */ -  node = build1 (NOP_EXPR, build_pointer_type (type), build_address_of (ref)); - -  /* Multiply the index by the size of an element to obtain a byte -     offset.  Convert the result to a pointer to the element type.  */ -  index = build2 (MULT_EXPR, sizetype,  -		  fold_convert (sizetype, index),  -		  size_exp); - -  /* Sum the byte offset and the address of the data field.  */ -  node = fold_build_pointer_plus (node, index); - -  /* Finally, return - -    *((&array->data) + index*size_exp) - -  */ -  return build1 (INDIRECT_REF, TREE_TYPE (TREE_TYPE (node)), node); -} - -/* Generate code to throw an ArrayStoreException if OBJECT is not assignable -   (at runtime) to an element of ARRAY.  A NOP_EXPR is returned if it can -   determine that no check is required. */ - -tree -build_java_arraystore_check (tree array, tree object) -{ -  tree check, element_type, source; -  tree array_type_p = TREE_TYPE (array); -  tree object_type = TYPE_NAME (TREE_TYPE (TREE_TYPE (object))); - -  if (! flag_verify_invocations) -    { -      /* With the new verifier, we don't track precise types.  FIXME: -	 performance regression here.  */ -      element_type = TYPE_NAME (object_type_node); -    } -  else -    { -      gcc_assert (is_array_type_p (array_type_p)); - -      /* Get the TYPE_DECL for ARRAY's element type. */ -      element_type -	= TYPE_NAME (TREE_TYPE (TREE_TYPE (TREE_TYPE (array_type_p)))); -    } - -  gcc_assert (TREE_CODE (element_type) == TYPE_DECL -	      && TREE_CODE (object_type) == TYPE_DECL); - -  if (!flag_store_check) -    return build1 (NOP_EXPR, array_type_p, array); - -  /* No check is needed if the element type is final.  Also check that -     element_type matches object_type, since in the bytecode -     compilation case element_type may be the actual element type of -     the array rather than its declared type.  However, if we're doing -     indirect dispatch, we can't do the `final' optimization.  */ -  if (element_type == object_type -      && ! flag_indirect_dispatch -      && CLASS_FINAL (element_type)) -    return build1 (NOP_EXPR, array_type_p, array); -   -  /* OBJECT might be wrapped by a SAVE_EXPR. */ -  if (TREE_CODE (object) == SAVE_EXPR) -    source = TREE_OPERAND (object, 0); -  else -    source = object; -   -  /* Avoid the check if OBJECT was just loaded from the same array. */ -  if (TREE_CODE (source) == ARRAY_REF) -    { -      tree target; -      source = TREE_OPERAND (source, 0); /* COMPONENT_REF. */ -      source = TREE_OPERAND (source, 0); /* INDIRECT_REF. */ -      source = TREE_OPERAND (source, 0); /* Source array's DECL or SAVE_EXPR. */ -      if (TREE_CODE (source) == SAVE_EXPR) -	source = TREE_OPERAND (source, 0); -       -      target = array; -      if (TREE_CODE (target) == SAVE_EXPR) -	target = TREE_OPERAND (target, 0); -       -      if (source == target) -        return build1 (NOP_EXPR, array_type_p, array); -    } - -  /* Build an invocation of _Jv_CheckArrayStore */ -  check = build_call_nary (void_type_node, -			   build_address_of (soft_checkarraystore_node), -			   2, array, object); -  TREE_SIDE_EFFECTS (check) = 1; - -  return check; -} - -/* Makes sure that INDEXED_TYPE is appropriate. If not, make it from -   ARRAY_NODE. This function is used to retrieve something less vague than -   a pointer type when indexing the first dimension of something like [[<t>. -   May return a corrected type, if necessary, otherwise INDEXED_TYPE is -   return unchanged.  */ - -static tree -build_java_check_indexed_type (tree array_node ATTRIBUTE_UNUSED, -			       tree indexed_type) -{ -  /* We used to check to see if ARRAY_NODE really had array type. -     However, with the new verifier, this is not necessary, as we know -     that the object will be an array of the appropriate type.  */ - -  return indexed_type; -} - -/* newarray triggers a call to _Jv_NewPrimArray. This function should be  -   called with an integer code (the type of array to create), and the length -   of the array to create.  */ - -tree -build_newarray (int atype_value, tree length) -{ -  tree type_arg; - -  tree prim_type = decode_newarray_type (atype_value); -  tree type -    = build_java_array_type (prim_type, -			     host_integerp (length, 0) == INTEGER_CST -			     ? tree_low_cst (length, 0) : -1); - -  /* Pass a reference to the primitive type class and save the runtime -     some work.  */ -  type_arg = build_class_ref (prim_type); - -  return build_call_nary (promote_type (type), -			  build_address_of (soft_newarray_node), -			  2, type_arg, length); -} - -/* Generates anewarray from a given CLASS_TYPE. Gets from the stack the size -   of the dimension. */ - -tree -build_anewarray (tree class_type, tree length) -{ -  tree type -    = build_java_array_type (class_type, -			     host_integerp (length, 0) -			     ? tree_low_cst (length, 0) : -1); - -  return build_call_nary (promote_type (type), -			  build_address_of (soft_anewarray_node), -			  3, -			  length, -			  build_class_ref (class_type), -			  null_pointer_node); -} - -/* Return a node the evaluates 'new TYPE[LENGTH]'. */ - -tree -build_new_array (tree type, tree length) -{ -  if (JPRIMITIVE_TYPE_P (type)) -    return build_newarray (encode_newarray_type (type), length); -  else -    return build_anewarray (TREE_TYPE (type), length); -} - -/* Generates a call to _Jv_NewMultiArray. multianewarray expects a -   class pointer, a number of dimensions and the matching number of -   dimensions. The argument list is NULL terminated.  */ - -static void -expand_java_multianewarray (tree class_type, int ndim) -{ -  int i; -  vec<tree, va_gc> *args = NULL; - -  vec_safe_grow (args, 3 + ndim); - -  (*args)[0] = build_class_ref (class_type); -  (*args)[1] = build_int_cst (NULL_TREE, ndim); - -  for(i = ndim - 1; i >= 0; i-- ) -    (*args)[(unsigned)(2 + i)] = pop_value (int_type_node); - -  (*args)[2 + ndim] = null_pointer_node; - -  push_value (build_call_vec (promote_type (class_type), -                              build_address_of (soft_multianewarray_node), -                              args)); -} - -/*  ARRAY[INDEX] <- RHS. build_java_check_indexed_type makes sure that -    ARRAY is an array type. May expand some bound checking and NULL -    pointer checking. RHS_TYPE_NODE we are going to store. In the case -    of the CHAR/BYTE/BOOLEAN SHORT, the type popped of the stack is an -    INT. In those cases, we make the conversion. - -    if ARRAy is a reference type, the assignment is checked at run-time -    to make sure that the RHS can be assigned to the array element -    type. It is not necessary to generate this code if ARRAY is final.  */ - -static void -expand_java_arraystore (tree rhs_type_node) -{ -  tree rhs_node    = pop_value ((INTEGRAL_TYPE_P (rhs_type_node)  -				 && TYPE_PRECISION (rhs_type_node) <= 32) ?  -				 int_type_node : rhs_type_node); -  tree index = pop_value (int_type_node); -  tree array_type, array, temp, access; - -  /* If we're processing an `aaload' we might as well just pick -     `Object'.  */ -  if (TREE_CODE (rhs_type_node) == POINTER_TYPE) -    { -      array_type = build_java_array_type (object_ptr_type_node, -1); -      rhs_type_node = object_ptr_type_node; -    } -  else -    array_type = build_java_array_type (rhs_type_node, -1); - -  array = pop_value (array_type); -  array = build1 (NOP_EXPR, promote_type (array_type), array); - -  rhs_type_node    = build_java_check_indexed_type (array, rhs_type_node); - -  flush_quick_stack (); - -  index = save_expr (index); -  array = save_expr (array); - -  /* We want to perform the bounds check (done by -     build_java_arrayaccess) before the type check (done by -     build_java_arraystore_check).  So, we call build_java_arrayaccess -     -- which returns an ARRAY_REF lvalue -- and we then generate code -     to stash the address of that lvalue in a temp.  Then we call -     build_java_arraystore_check, and finally we generate a -     MODIFY_EXPR to set the array element.  */ - -  access = build_java_arrayaccess (array, rhs_type_node, index); -  temp = build_decl (input_location, VAR_DECL, NULL_TREE,  -		     build_pointer_type (TREE_TYPE (access))); -  java_add_local_var (temp); -  java_add_stmt (build2 (MODIFY_EXPR, TREE_TYPE (temp), -			 temp,  -			 build_fold_addr_expr (access))); - -  if (TREE_CODE (rhs_type_node) == POINTER_TYPE) -    { -      tree check = build_java_arraystore_check (array, rhs_node); -      java_add_stmt (check); -    } -   -  java_add_stmt (build2 (MODIFY_EXPR, TREE_TYPE (access),  -			 build1 (INDIRECT_REF, TREE_TYPE (access), temp), -			 rhs_node));   -} - -/* Expand the evaluation of ARRAY[INDEX]. build_java_check_indexed_type makes  -   sure that LHS is an array type. May expand some bound checking and NULL -   pointer checking.   -   LHS_TYPE_NODE is the type of ARRAY[INDEX]. But in the case of CHAR/BYTE/ -   BOOLEAN/SHORT, we push a promoted type back to the stack. -*/ - -static void -expand_java_arrayload (tree lhs_type_node) -{ -  tree load_node; -  tree index_node = pop_value (int_type_node); -  tree array_type; -  tree array_node; - -  /* If we're processing an `aaload' we might as well just pick -     `Object'.  */ -  if (TREE_CODE (lhs_type_node) == POINTER_TYPE) -    { -      array_type = build_java_array_type (object_ptr_type_node, -1); -      lhs_type_node = object_ptr_type_node; -    } -  else -    array_type = build_java_array_type (lhs_type_node, -1); -  array_node = pop_value (array_type); -  array_node = build1 (NOP_EXPR, promote_type (array_type), array_node); - -  index_node = save_expr (index_node); -  array_node = save_expr (array_node); - -  lhs_type_node = build_java_check_indexed_type (array_node, -						 lhs_type_node); -  load_node = build_java_arrayaccess (array_node, -				      lhs_type_node, -				      index_node); -  if (INTEGRAL_TYPE_P (lhs_type_node) && TYPE_PRECISION (lhs_type_node) <= 32) -    load_node = fold_build1 (NOP_EXPR, int_type_node, load_node); -  push_value (load_node); -} - -/* Expands .length. Makes sure that we deal with and array and may expand -   a NULL check on the array object.  */ - -static void -expand_java_array_length (void) -{ -  tree array  = pop_value (ptr_type_node); -  tree length = build_java_array_length_access (array); - -  push_value (length); -} - -/* Emit code for the call to _Jv_Monitor{Enter,Exit}. CALL can be -   either soft_monitorenter_node or soft_monitorexit_node.  */ - -static tree -build_java_monitor (tree call, tree object) -{ -  return build_call_nary (void_type_node, -			  build_address_of (call), -			  1, object); -} - -/* Emit code for one of the PUSHC instructions. */ - -static void -expand_java_pushc (int ival, tree type) -{ -  tree value; -  if (type == ptr_type_node && ival == 0) -    value = null_pointer_node; -  else if (type == int_type_node || type == long_type_node) -    value = build_int_cst (type, ival); -  else if (type == float_type_node || type == double_type_node) -    { -      REAL_VALUE_TYPE x; -      REAL_VALUE_FROM_INT (x, ival, 0, TYPE_MODE (type)); -      value = build_real (type, x); -    } -  else -    gcc_unreachable (); - -  push_value (value); -} - -static void -expand_java_return (tree type) -{ -  if (type == void_type_node) -    java_add_stmt (build1 (RETURN_EXPR, void_type_node, NULL));    -  else -    { -      tree retval = pop_value (type); -      tree res = DECL_RESULT (current_function_decl); -      retval = build2 (MODIFY_EXPR, TREE_TYPE (res), res, retval); - -      /* Handle the situation where the native integer type is smaller -	 than the JVM integer. It can happen for many cross compilers. -	 The whole if expression just goes away if INT_TYPE_SIZE < 32 -	 is false. */ -      if (INT_TYPE_SIZE < 32 -	  && (GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (res))) -	      < GET_MODE_SIZE (TYPE_MODE (type)))) -	retval = build1(NOP_EXPR, TREE_TYPE(res), retval); -       -      TREE_SIDE_EFFECTS (retval) = 1; -      java_add_stmt (build1 (RETURN_EXPR, void_type_node, retval)); -    } -} - -static void -expand_load_internal (int index, tree type, int pc) -{ -  tree copy; -  tree var = find_local_variable (index, type, pc); - -  /* Now VAR is the VAR_DECL (or PARM_DECL) that we are going to push -     on the stack.  If there is an assignment to this VAR_DECL between -     the stack push and the use, then the wrong code could be -     generated.  To avoid this we create a new local and copy our -     value into it.  Then we push this new local on the stack. -     Hopefully this all gets optimized out.  */ -  copy = build_decl (input_location, VAR_DECL, NULL_TREE, type); -  if ((INTEGRAL_TYPE_P (type) || POINTER_TYPE_P (type)) -      && TREE_TYPE (copy) != TREE_TYPE (var)) -    var = convert (type, var); -  java_add_local_var (copy); -  java_add_stmt (build2 (MODIFY_EXPR, TREE_TYPE (var), copy, var)); -   -  push_value (copy); -} - -tree -build_address_of (tree value) -{ -  return build1 (ADDR_EXPR, build_pointer_type (TREE_TYPE (value)), value); -} - -bool -class_has_finalize_method (tree type) -{ -  tree super = CLASSTYPE_SUPER (type); - -  if (super == NULL_TREE) -    return false;	/* Every class with a real finalizer inherits	*/ -   			/* from java.lang.Object.			*/ -  else -    return HAS_FINALIZER_P (type) || class_has_finalize_method (super); -} - -tree -java_create_object (tree type) -{ -  tree alloc_node = (class_has_finalize_method (type)  -		     ? alloc_object_node -		     : alloc_no_finalizer_node); -   -  return build_call_nary (promote_type (type), -			  build_address_of (alloc_node), -			  1, build_class_ref (type)); -} - -static void -expand_java_NEW (tree type) -{ -  tree alloc_node; - -  alloc_node = (class_has_finalize_method (type) ? alloc_object_node -		  				 : alloc_no_finalizer_node); -  if (! CLASS_LOADED_P (type)) -    load_class (type, 1); -  safe_layout_class (type); -  push_value (build_call_nary (promote_type (type), -			       build_address_of (alloc_node), -			       1, build_class_ref (type))); -} - -/* This returns an expression which will extract the class of an -   object.  */ - -tree -build_get_class (tree value) -{ -  tree class_field = lookup_field (&dtable_type, get_identifier ("class")); -  tree vtable_field = lookup_field (&object_type_node, -				    get_identifier ("vtable")); -  tree tmp = build3 (COMPONENT_REF, dtable_ptr_type, -		     build_java_indirect_ref (object_type_node, value, -					      flag_check_references), -		     vtable_field, NULL_TREE); -  return build3 (COMPONENT_REF, class_ptr_type, -		 build1 (INDIRECT_REF, dtable_type, tmp), -		 class_field, NULL_TREE); -} - -/* This builds the tree representation of the `instanceof' operator. -   It tries various tricks to optimize this in cases where types are -   known.  */ - -tree -build_instanceof (tree value, tree type) -{ -  tree expr; -  tree itype = TREE_TYPE (TREE_TYPE (soft_instanceof_node)); -  tree valtype = TREE_TYPE (TREE_TYPE (value)); -  tree valclass = TYPE_NAME (valtype); -  tree klass; - -  /* When compiling from bytecode, we need to ensure that TYPE has -     been loaded.  */ -  if (CLASS_P (type) && ! CLASS_LOADED_P (type)) -    { -      load_class (type, 1); -      safe_layout_class (type); -      if (! TYPE_SIZE (type) || TREE_CODE (TYPE_SIZE (type)) == ERROR_MARK) -	return error_mark_node; -    } -  klass = TYPE_NAME (type); - -  if (type == object_type_node || inherits_from_p (valtype, type)) -    { -      /* Anything except `null' is an instance of Object.  Likewise, -	 if the object is known to be an instance of the class, then -	 we only need to check for `null'.  */ -      expr = build2 (NE_EXPR, itype, value, null_pointer_node); -    } -  else if (flag_verify_invocations -	   && ! TYPE_ARRAY_P (type) -	   && ! TYPE_ARRAY_P (valtype) -	   && DECL_P (klass) && DECL_P (valclass) -	   && ! CLASS_INTERFACE (valclass) -	   && ! CLASS_INTERFACE (klass) -	   && ! inherits_from_p (type, valtype) -	   && (CLASS_FINAL (klass) -	       || ! inherits_from_p (valtype, type))) -    { -      /* The classes are from different branches of the derivation -	 tree, so we immediately know the answer.  */ -      expr = boolean_false_node; -    } -  else if (DECL_P (klass) && CLASS_FINAL (klass)) -    { -      tree save = save_expr (value); -      expr = build3 (COND_EXPR, itype, -		     build2 (NE_EXPR, boolean_type_node, -			     save, null_pointer_node), -		     build2 (EQ_EXPR, itype, -			     build_get_class (save), -			     build_class_ref (type)), -		     boolean_false_node); -    } -  else -    { -      expr = build_call_nary (itype, -			      build_address_of (soft_instanceof_node), -			      2, value, build_class_ref (type)); -    } -  TREE_SIDE_EFFECTS (expr) = TREE_SIDE_EFFECTS (value); -  return expr; -} - -static void -expand_java_INSTANCEOF (tree type) -{ -  tree value = pop_value (object_ptr_type_node); -  value = build_instanceof (value, type); -  push_value (value); -} - -static void -expand_java_CHECKCAST (tree type) -{ -  tree value = pop_value (ptr_type_node); -  value = build_call_nary (promote_type (type), -			   build_address_of (soft_checkcast_node), -			   2, build_class_ref (type), value); -  push_value (value); -} - -static void -expand_iinc (unsigned int local_var_index, int ival, int pc) -{ -  tree local_var, res; -  tree constant_value; - -  flush_quick_stack (); -  local_var = find_local_variable (local_var_index, int_type_node, pc); -  constant_value = build_int_cst (NULL_TREE, ival); -  res = fold_build2 (PLUS_EXPR, int_type_node, local_var, constant_value); -  java_add_stmt (build2 (MODIFY_EXPR, TREE_TYPE (local_var), local_var, res)); -} - - -tree -build_java_soft_divmod (enum tree_code op, tree type, tree op1, tree op2) -{ -  tree call = NULL; -  tree arg1 = convert (type, op1); -  tree arg2 = convert (type, op2); - -  if (type == int_type_node) -    {	   -      switch (op) -	{ -	case TRUNC_DIV_EXPR: -	  call = soft_idiv_node; -	  break; -	case TRUNC_MOD_EXPR: -	  call = soft_irem_node; -	  break; -	default: -	  break; -	} -    } -  else if (type == long_type_node) -    {	   -      switch (op) -	{ -	case TRUNC_DIV_EXPR: -	  call = soft_ldiv_node; -	  break; -	case TRUNC_MOD_EXPR: -	  call = soft_lrem_node; -	  break; -	default: -	  break; -	} -    } - -  gcc_assert (call); -  call = build_call_nary (type, build_address_of (call), 2, arg1, arg2); -  return call; -} - -tree -build_java_binop (enum tree_code op, tree type, tree arg1, tree arg2) -{ -  tree mask; -  switch (op) -    { -    case URSHIFT_EXPR: -      { -	tree u_type = unsigned_type_for (type); -	arg1 = convert (u_type, arg1); -	arg1 = build_java_binop (RSHIFT_EXPR, u_type, arg1, arg2); -	return convert (type, arg1); -      } -    case LSHIFT_EXPR: -    case RSHIFT_EXPR: -      mask = build_int_cst (NULL_TREE, -			    TYPE_PRECISION (TREE_TYPE (arg1)) - 1); -      arg2 = fold_build2 (BIT_AND_EXPR, int_type_node, arg2, mask); -      break; - -    case COMPARE_L_EXPR:  /* arg1 > arg2 ?  1 : arg1 == arg2 ? 0 : -1 */ -    case COMPARE_G_EXPR:  /* arg1 < arg2 ? -1 : arg1 == arg2 ? 0 :  1 */ -      arg1 = save_expr (arg1);  arg2 = save_expr (arg2); -      { -	tree ifexp1 = fold_build2 (op == COMPARE_L_EXPR ? GT_EXPR : LT_EXPR, -				   boolean_type_node, arg1, arg2); -	tree ifexp2 = fold_build2 (EQ_EXPR, boolean_type_node, arg1, arg2); -	tree second_compare = fold_build3 (COND_EXPR, int_type_node, -					   ifexp2, integer_zero_node, -					   op == COMPARE_L_EXPR -					   ? integer_minus_one_node -					   : integer_one_node); -	return fold_build3 (COND_EXPR, int_type_node, ifexp1, -			    op == COMPARE_L_EXPR ? integer_one_node -			    : integer_minus_one_node, -			    second_compare); -      } -    case COMPARE_EXPR: -      arg1 = save_expr (arg1);  arg2 = save_expr (arg2); -      { -	tree ifexp1 = fold_build2 (LT_EXPR, boolean_type_node, arg1, arg2); -	tree ifexp2 = fold_build2 (GT_EXPR, boolean_type_node, arg1, arg2); -	tree second_compare = fold_build3 (COND_EXPR, int_type_node, -					   ifexp2, integer_one_node, -					   integer_zero_node); -	return fold_build3 (COND_EXPR, int_type_node, -			    ifexp1, integer_minus_one_node, second_compare); -      }       -    case TRUNC_DIV_EXPR: -    case TRUNC_MOD_EXPR: -      if (TREE_CODE (type) == REAL_TYPE -	  && op == TRUNC_MOD_EXPR) -	{ -	  tree call; -	  if (type != double_type_node) -	    { -	      arg1 = convert (double_type_node, arg1); -	      arg2 = convert (double_type_node, arg2); -	    } -	  call = build_call_nary (double_type_node, -				  build_address_of (soft_fmod_node), -				  2, arg1, arg2); -	  if (type != double_type_node) -	    call = convert (type, call); -	  return call; -	} -       -      if (TREE_CODE (type) == INTEGER_TYPE -	  && flag_use_divide_subroutine -	  && ! flag_syntax_only) -	return build_java_soft_divmod (op, type, arg1, arg2); -       -      break; -    default:  ; -    } -  return fold_build2 (op, type, arg1, arg2); -} - -static void -expand_java_binop (tree type, enum tree_code op) -{ -  tree larg, rarg; -  tree ltype = type; -  tree rtype = type; -  switch (op) -    { -    case LSHIFT_EXPR: -    case RSHIFT_EXPR: -    case URSHIFT_EXPR: -      rtype = int_type_node; -      rarg = pop_value (rtype); -      break; -    default: -      rarg = pop_value (rtype); -    } -  larg = pop_value (ltype); -  push_value (build_java_binop (op, type, larg, rarg)); -} - -/* Lookup the field named NAME in *TYPEP or its super classes. -   If not found, return NULL_TREE. -   (If the *TYPEP is not found, or if the field reference is -   ambiguous, return error_mark_node.) -   If found, return the FIELD_DECL, and set *TYPEP to the -   class containing the field. */ - -tree -lookup_field (tree *typep, tree name) -{ -  if (CLASS_P (*typep) && !CLASS_LOADED_P (*typep)) -    { -      load_class (*typep, 1); -      safe_layout_class (*typep); -      if (!TYPE_SIZE (*typep) || TREE_CODE (TYPE_SIZE (*typep)) == ERROR_MARK) -	return error_mark_node; -    } -  do -    { -      tree field, binfo, base_binfo; -      tree save_field; -      int i; - -      for (field = TYPE_FIELDS (*typep); field; field = DECL_CHAIN (field)) -	if (DECL_NAME (field) == name) -	  return field; - -      /* Process implemented interfaces. */ -      save_field = NULL_TREE; -      for (binfo = TYPE_BINFO (*typep), i = 0; -	   BINFO_BASE_ITERATE (binfo, i, base_binfo); i++) -	{ -	  tree t = BINFO_TYPE (base_binfo); -	  if ((field = lookup_field (&t, name))) -	    { -	      if (save_field == field) -		continue; -	      if (save_field == NULL_TREE) -		save_field = field; -	      else -		{ -		  tree i1 = DECL_CONTEXT (save_field); -		  tree i2 = DECL_CONTEXT (field); -		  error ("reference %qs is ambiguous: appears in interface %qs and interface %qs", -			 IDENTIFIER_POINTER (name), -			 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (i1))), -			 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (i2)))); -		  return error_mark_node; -		} -	    } -	} - -      if (save_field != NULL_TREE) -	return save_field; - -      *typep = CLASSTYPE_SUPER (*typep); -    } while (*typep); -  return NULL_TREE; -} - -/* Look up the field named NAME in object SELF_VALUE, -   which has class SELF_CLASS (a non-handle RECORD_TYPE). -   SELF_VALUE is NULL_TREE if looking for a static field. */ - -tree -build_field_ref (tree self_value, tree self_class, tree name) -{ -  tree base_class = self_class; -  tree field_decl = lookup_field (&base_class, name); -  if (field_decl == NULL_TREE) -    { -      error ("field %qs not found", IDENTIFIER_POINTER (name)); -      return error_mark_node; -    } -  if (self_value == NULL_TREE) -    { -      return build_static_field_ref (field_decl); -    } -  else -    { -      tree base_type = promote_type (base_class); - -      /* CHECK is true if self_value is not the this pointer.  */ -      int check = (! (DECL_P (self_value) -		      && DECL_NAME (self_value) == this_identifier_node)); - -      /* Determine whether a field offset from NULL will lie within -	 Page 0: this is necessary on those GNU/Linux/BSD systems that -	 trap SEGV to generate NullPointerExceptions.   - -	 We assume that Page 0 will be mapped with NOPERM, and that -	 memory may be allocated from any other page, so only field -	 offsets < pagesize are guaranteed to trap.  We also assume -	 the smallest page size we'll encounter is 4k bytes.  */ -      if (! flag_syntax_only && check && ! flag_check_references  -	  && ! flag_indirect_dispatch) -	{ -	  tree field_offset = byte_position (field_decl); -	  if (! page_size) -	    page_size = size_int (4096); 	       -	  check = ! INT_CST_LT_UNSIGNED (field_offset, page_size); -	} - -      if (base_type != TREE_TYPE (self_value)) -	self_value = fold_build1 (NOP_EXPR, base_type, self_value); -      if (! flag_syntax_only && flag_indirect_dispatch) -	{ -	  tree otable_index -	    = build_int_cst (NULL_TREE, get_symbol_table_index  -			     (field_decl, NULL_TREE,  -			      &TYPE_OTABLE_METHODS (output_class))); -	  tree field_offset -	    = build4 (ARRAY_REF, integer_type_node, -		      TYPE_OTABLE_DECL (output_class), otable_index, -		      NULL_TREE, NULL_TREE); -	  tree address; - -	  if (DECL_CONTEXT (field_decl) != output_class) -	    field_offset -	      = build3 (COND_EXPR, TREE_TYPE (field_offset), -			build2 (EQ_EXPR, boolean_type_node, -				field_offset, integer_zero_node), -			build_call_nary (void_type_node,  -					 build_address_of (soft_nosuchfield_node), -					 1, otable_index), -			field_offset); -	   -	  self_value = java_check_reference (self_value, check); -	  address = fold_build_pointer_plus (self_value, field_offset); -	  address = fold_convert (build_pointer_type (TREE_TYPE (field_decl)), -				  address); -	  return fold_build1 (INDIRECT_REF, TREE_TYPE (field_decl), address); -	} - -      self_value = build_java_indirect_ref (TREE_TYPE (TREE_TYPE (self_value)), -					    self_value, check); -      return fold_build3 (COMPONENT_REF, TREE_TYPE (field_decl), -			  self_value, field_decl, NULL_TREE); -    } -} - -tree -lookup_label (int pc) -{ -  tree name; -  char buf[32]; -  if (pc > highest_label_pc_this_method) -    highest_label_pc_this_method = pc; -  targetm.asm_out.generate_internal_label (buf, "LJpc=", -					   start_label_pc_this_method + pc); -  name = get_identifier (buf); -  if (IDENTIFIER_LOCAL_VALUE (name)) -    return IDENTIFIER_LOCAL_VALUE (name); -  else -    { -      /* The type of the address of a label is return_address_type_node. */ -      tree decl = create_label_decl (name); -      return pushdecl (decl); -    } -} - -/* Generate a unique name for the purpose of loops and switches -   labels, and try-catch-finally blocks label or temporary variables.  */ - -tree -generate_name (void) -{ -  static int l_number = 0; -  char buff [32]; -  targetm.asm_out.generate_internal_label (buff, "LJv", l_number); -  l_number++; -  return get_identifier (buff); -} - -tree -create_label_decl (tree name) -{ -  tree decl; -  decl = build_decl (input_location, LABEL_DECL, name,  -		     TREE_TYPE (return_address_type_node)); -  DECL_CONTEXT (decl) = current_function_decl; -  DECL_IGNORED_P (decl) = 1; -  return decl; -} - -/* This maps a bytecode offset (PC) to various flags.  */ -char *instruction_bits; - -/* This is a vector of type states for the current method.  It is -   indexed by PC.  Each element is a tree vector holding the type -   state at that PC.  We only note type states at basic block -   boundaries.  */ -vec<tree, va_gc> *type_states; - -static void -note_label (int current_pc ATTRIBUTE_UNUSED, int target_pc) -{ -  lookup_label (target_pc); -  instruction_bits [target_pc] |= BCODE_JUMP_TARGET; -} - -/* Emit code to jump to TARGET_PC if VALUE1 CONDITION VALUE2, -   where CONDITION is one of one the compare operators. */ - -static void -expand_compare (enum tree_code condition, tree value1, tree value2, -		int target_pc) -{ -  tree target = lookup_label (target_pc); -  tree cond = fold_build2 (condition, boolean_type_node, value1, value2); -  java_add_stmt  -    (build3 (COND_EXPR, void_type_node, java_truthvalue_conversion (cond), -	     build1 (GOTO_EXPR, void_type_node, target),  -	     build_java_empty_stmt ())); -} - -/* Emit code for a TEST-type opcode. */ - -static void -expand_test (enum tree_code condition, tree type, int target_pc) -{ -  tree value1, value2; -  flush_quick_stack (); -  value1 = pop_value (type); -  value2 = (type == ptr_type_node) ? null_pointer_node : integer_zero_node; -  expand_compare (condition, value1, value2, target_pc); -} - -/* Emit code for a COND-type opcode. */ - -static void -expand_cond (enum tree_code condition, tree type, int target_pc) -{ -  tree value1, value2; -  flush_quick_stack (); -  /* note: pop values in opposite order */ -  value2 = pop_value (type); -  value1 = pop_value (type); -  /* Maybe should check value1 and value2 for type compatibility ??? */ -  expand_compare (condition, value1, value2, target_pc); -} - -static void -expand_java_goto (int target_pc) -{ -  tree target_label = lookup_label (target_pc); -  flush_quick_stack (); -  java_add_stmt (build1 (GOTO_EXPR, void_type_node, target_label)); -} - -static tree -expand_java_switch (tree selector, int default_pc) -{ -  tree switch_expr, x; - -  flush_quick_stack (); -  switch_expr = build3 (SWITCH_EXPR, TREE_TYPE (selector), selector, -			NULL_TREE, NULL_TREE); -  java_add_stmt (switch_expr); - -  x = build_case_label (NULL_TREE, NULL_TREE, -			create_artificial_label (input_location)); -  append_to_statement_list (x, &SWITCH_BODY (switch_expr)); - -  x = build1 (GOTO_EXPR, void_type_node, lookup_label (default_pc)); -  append_to_statement_list (x, &SWITCH_BODY (switch_expr)); - -  return switch_expr; -} - -static void -expand_java_add_case (tree switch_expr, int match, int target_pc) -{ -  tree value, x; - -  value = build_int_cst (TREE_TYPE (switch_expr), match); -   -  x = build_case_label (value, NULL_TREE, -			create_artificial_label (input_location)); -  append_to_statement_list (x, &SWITCH_BODY (switch_expr)); - -  x = build1 (GOTO_EXPR, void_type_node, lookup_label (target_pc)); -  append_to_statement_list (x, &SWITCH_BODY (switch_expr)); -} - -static vec<tree, va_gc> * -pop_arguments (tree method_type) -{ -  function_args_iterator fnai; -  tree type; -  vec<tree, va_gc> *args = NULL; -  int arity; - -  FOREACH_FUNCTION_ARGS (method_type, type, fnai) -    { -      /* XXX: leaky abstraction.  */ -      if (type == void_type_node) -        break; - -      vec_safe_push (args, type); -    } - -  arity = vec_safe_length (args); - -  while (arity--) -    { -      tree arg = pop_value ((*args)[arity]); - -      /* We simply cast each argument to its proper type.  This is -	 needed since we lose type information coming out of the -	 verifier.  We also have to do this when we pop an integer -	 type that must be promoted for the function call.  */ -      if (TREE_CODE (type) == POINTER_TYPE) -	arg = build1 (NOP_EXPR, type, arg); -      else if (targetm.calls.promote_prototypes (type) -	       && TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node) -	       && INTEGRAL_TYPE_P (type)) -	arg = convert (integer_type_node, arg); - -      (*args)[arity] = arg; -    } - -  return args; -} - -/* Attach to PTR (a block) the declaration found in ENTRY. */ - -int -attach_init_test_initialization_flags (void **entry, void *ptr) -{ -  tree block = (tree)ptr; -  struct treetreehash_entry *ite = (struct treetreehash_entry *) *entry; - -  if (block != error_mark_node) -    { -      if (TREE_CODE (block) == BIND_EXPR) -        { -	  tree body = BIND_EXPR_BODY (block); -	  DECL_CHAIN (ite->value) = BIND_EXPR_VARS (block); -	  BIND_EXPR_VARS (block) = ite->value; -	  body = build2 (COMPOUND_EXPR, void_type_node, -			 build1 (DECL_EXPR, void_type_node, ite->value), body); -	  BIND_EXPR_BODY (block) = body; -	} -      else -	{ -	  tree body = BLOCK_SUBBLOCKS (block); -	  TREE_CHAIN (ite->value) = BLOCK_EXPR_DECLS (block); -	  BLOCK_EXPR_DECLS (block) = ite->value; -	  body = build2 (COMPOUND_EXPR, void_type_node, -			 build1 (DECL_EXPR, void_type_node, ite->value), body); -	  BLOCK_SUBBLOCKS (block) = body; -        } -       -    } -  return true; -} - -/* Build an expression to initialize the class CLAS. -   if EXPR is non-NULL, returns an expression to first call the initializer -   (if it is needed) and then calls EXPR. */ - -tree -build_class_init (tree clas, tree expr) -{ -  tree init; - -  /* An optimization: if CLAS is a superclass of the class we're -     compiling, we don't need to initialize it.  However, if CLAS is -     an interface, it won't necessarily be initialized, even if we -     implement it.  */ -  if ((! CLASS_INTERFACE (TYPE_NAME (clas)) -       && inherits_from_p (current_class, clas)) -      || current_class == clas) -    return expr; - -  if (always_initialize_class_p) -    { -      init = build_call_nary (void_type_node, -			      build_address_of (soft_initclass_node), -			      1, build_class_ref (clas)); -      TREE_SIDE_EFFECTS (init) = 1; -    } -  else -    { -      tree *init_test_decl; -      tree decl; -      init_test_decl = java_treetreehash_new -	(DECL_FUNCTION_INIT_TEST_TABLE (current_function_decl), clas); - -      if (*init_test_decl == NULL) -	{ -	  /* Build a declaration and mark it as a flag used to track -	     static class initializations. */ -	  decl = build_decl (input_location, VAR_DECL, NULL_TREE, -			     boolean_type_node); -	  MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (decl); -	  DECL_CONTEXT (decl) = current_function_decl; -	  DECL_INITIAL (decl) = boolean_false_node; -	  /* Don't emit any symbolic debugging info for this decl.  */ -	  DECL_IGNORED_P (decl) = 1;	   -	  *init_test_decl = decl; -	} - -      init = build_call_nary (void_type_node, -			      build_address_of (soft_initclass_node), -			      1, build_class_ref (clas)); -      TREE_SIDE_EFFECTS (init) = 1; -      init = build3 (COND_EXPR, void_type_node, -		     build2 (EQ_EXPR, boolean_type_node,  -			     *init_test_decl, boolean_false_node), -		     init, integer_zero_node); -      TREE_SIDE_EFFECTS (init) = 1; -      init = build2 (COMPOUND_EXPR, TREE_TYPE (expr), init,  -		     build2 (MODIFY_EXPR, boolean_type_node, -			     *init_test_decl, boolean_true_node)); -      TREE_SIDE_EFFECTS (init) = 1; -    } - -  if (expr != NULL_TREE) -    { -      expr = build2 (COMPOUND_EXPR, TREE_TYPE (expr), init, expr); -      TREE_SIDE_EFFECTS (expr) = 1; -      return expr; -    } -  return init; -} - - - -/* Rewrite expensive calls that require stack unwinding at runtime to -   cheaper alternatives.  The logic here performs these -   transformations: - -   java.lang.Class.forName("foo") -> java.lang.Class.forName("foo", class$) -   java.lang.Class.getClassLoader() -> java.lang.Class.getClassLoader(class$) - -*/ - -typedef struct -{ -  const char *classname; -  const char *method; -  const char *signature; -  const char *new_classname; -  const char *new_signature; -  int flags; -  void (*rewrite_arglist) (vec<tree, va_gc> **); -} rewrite_rule; - -/* Add __builtin_return_address(0) to the end of an arglist.  */ - - -static void -rewrite_arglist_getcaller (vec<tree, va_gc> **arglist) -{ -  tree retaddr  -    = build_call_expr (builtin_decl_explicit (BUILT_IN_RETURN_ADDRESS), -		       1, integer_zero_node); - -  DECL_UNINLINABLE (current_function_decl) = 1; - -  vec_safe_push (*arglist, retaddr); -} - -/* Add this.class to the end of an arglist.  */ - -static void -rewrite_arglist_getclass (vec<tree, va_gc> **arglist) -{ -  vec_safe_push (*arglist, build_class_ref (output_class)); -} - -static rewrite_rule rules[] = -  {{"java.lang.Class", "getClassLoader", "()Ljava/lang/ClassLoader;",  -    "java.lang.Class", "(Ljava/lang/Class;)Ljava/lang/ClassLoader;",  -    ACC_FINAL|ACC_PRIVATE, rewrite_arglist_getclass}, - -   {"java.lang.Class", "forName", "(Ljava/lang/String;)Ljava/lang/Class;", -    "java.lang.Class", "(Ljava/lang/String;Ljava/lang/Class;)Ljava/lang/Class;", -    ACC_FINAL|ACC_PRIVATE|ACC_STATIC, rewrite_arglist_getclass}, - -   {"gnu.classpath.VMStackWalker", "getCallingClass", "()Ljava/lang/Class;", -    "gnu.classpath.VMStackWalker", "(Lgnu/gcj/RawData;)Ljava/lang/Class;", -    ACC_FINAL|ACC_PRIVATE|ACC_STATIC, rewrite_arglist_getcaller}, - -   {"gnu.classpath.VMStackWalker", "getCallingClassLoader",  -    "()Ljava/lang/ClassLoader;", -    "gnu.classpath.VMStackWalker", "(Lgnu/gcj/RawData;)Ljava/lang/ClassLoader;", -    ACC_FINAL|ACC_PRIVATE|ACC_STATIC, rewrite_arglist_getcaller}, - -   {"gnu.java.lang.VMCPStringBuilder", "toString", "([CII)Ljava/lang/String;",  -    "java.lang.String", "([CII)Ljava/lang/String;", -    ACC_FINAL|ACC_PRIVATE|ACC_STATIC, NULL}, - -   {NULL, NULL, NULL, NULL, NULL, 0, NULL}}; - -/* True if this method is special, i.e. it's a private method that -   should be exported from a DSO.  */ - -bool -special_method_p (tree candidate_method) -{ -  tree context = DECL_NAME (TYPE_NAME (DECL_CONTEXT (candidate_method))); -  tree method = DECL_NAME (candidate_method); -  rewrite_rule *p; - -  for (p = rules; p->classname; p++) -    { -      if (get_identifier (p->classname) == context -	  && get_identifier (p->method) == method) -	return true; -    } -  return false; -} - -/* Scan the rules list for replacements for *METHOD_P and replace the -   args accordingly.  If the rewrite results in an access to a private -   method, update SPECIAL.*/ - -void -maybe_rewrite_invocation (tree *method_p, vec<tree, va_gc> **arg_list_p,  -			  tree *method_signature_p, tree *special) -{ -  tree context = DECL_NAME (TYPE_NAME (DECL_CONTEXT (*method_p))); -  rewrite_rule *p; -  *special = NULL_TREE; - -  for (p = rules; p->classname; p++) -    { -      if (get_identifier (p->classname) == context) -	{ -	  tree method = DECL_NAME (*method_p); -	  if (get_identifier (p->method) == method -	      && get_identifier (p->signature) == *method_signature_p) -	    { -	      tree maybe_method; -	      tree destination_class  -		= lookup_class (get_identifier (p->new_classname)); -	      gcc_assert (destination_class); -	      maybe_method -		= lookup_java_method (destination_class, -				      method, -				      get_identifier (p->new_signature)); -	      if (! maybe_method && ! flag_verify_invocations) -		{ -		  maybe_method -		    = add_method (destination_class, p->flags,  -				  method, get_identifier (p->new_signature)); -		  DECL_EXTERNAL (maybe_method) = 1; -		} -	      *method_p = maybe_method; -	      gcc_assert (*method_p); -	      if (p->rewrite_arglist) -		p->rewrite_arglist (arg_list_p); -	      *method_signature_p = get_identifier (p->new_signature); -	      *special = integer_one_node; - -	      break; -	    } -	} -    } -} - - - -tree -build_known_method_ref (tree method, tree method_type ATTRIBUTE_UNUSED, -			tree self_type, tree method_signature ATTRIBUTE_UNUSED, -			vec<tree, va_gc> *arg_list ATTRIBUTE_UNUSED, tree special) -{ -  tree func; -  if (is_compiled_class (self_type)) -    { -      /* With indirect dispatch we have to use indirect calls for all -	 publicly visible methods or gcc will use PLT indirections -	 to reach them.  We also have to use indirect dispatch for all -	 external methods.  */ -      if (! flag_indirect_dispatch  -	  || (! DECL_EXTERNAL (method) && ! TREE_PUBLIC (method))) -	{ -	  func = build1 (ADDR_EXPR, build_pointer_type (TREE_TYPE (method)), -			 method); -	} -      else -	{ -	  tree table_index -	    = build_int_cst (NULL_TREE,  -			     (get_symbol_table_index  -			      (method, special, -			       &TYPE_ATABLE_METHODS (output_class)))); -	  func  -	    = build4 (ARRAY_REF,   -		      TREE_TYPE (TREE_TYPE (TYPE_ATABLE_DECL (output_class))), -		      TYPE_ATABLE_DECL (output_class), table_index, -		      NULL_TREE, NULL_TREE); -	} -      func = convert (method_ptr_type_node, func); -    } -  else -    { -      /* We don't know whether the method has been (statically) compiled. -	 Compile this code to get a reference to the method's code: - -	 SELF_TYPE->methods[METHOD_INDEX].ncode - -      */ - -      int method_index = 0; -      tree meth, ref; - -      /* The method might actually be declared in some superclass, so -	 we have to use its class context, not the caller's notion of -	 where the method is.  */ -      self_type = DECL_CONTEXT (method); -      ref = build_class_ref (self_type); -      ref = build1 (INDIRECT_REF, class_type_node, ref); -      if (ncode_ident == NULL_TREE) -	ncode_ident = get_identifier ("ncode"); -      if (methods_ident == NULL_TREE) -	methods_ident = get_identifier ("methods"); -      ref = build3 (COMPONENT_REF, method_ptr_type_node, ref, -		    lookup_field (&class_type_node, methods_ident), -		    NULL_TREE); -      for (meth = TYPE_METHODS (self_type); -	   ; meth = DECL_CHAIN (meth)) -	{ -	  if (method == meth) -	    break; -	  if (meth == NULL_TREE) -	    fatal_error ("method '%s' not found in class", -			 IDENTIFIER_POINTER (DECL_NAME (method))); -	  method_index++; -	} -      method_index *= int_size_in_bytes (method_type_node); -      ref = fold_build_pointer_plus_hwi (ref, method_index); -      ref = build1 (INDIRECT_REF, method_type_node, ref); -      func = build3 (COMPONENT_REF, nativecode_ptr_type_node, -		     ref, lookup_field (&method_type_node, ncode_ident), -		     NULL_TREE); -    } -  return func; -} - -tree -invoke_build_dtable (int is_invoke_interface, vec<tree, va_gc> *arg_list) -{ -  tree dtable, objectref; -  tree saved = save_expr ((*arg_list)[0]); - -  (*arg_list)[0] = saved; - -  /* If we're dealing with interfaces and if the objectref -     argument is an array then get the dispatch table of the class -     Object rather than the one from the objectref.  */ -  objectref = (is_invoke_interface  -	       && is_array_type_p (TREE_TYPE (saved)) -	       ? build_class_ref (object_type_node) : saved); - -  if (dtable_ident == NULL_TREE) -    dtable_ident = get_identifier ("vtable"); -  dtable = build_java_indirect_ref (object_type_node, objectref,  -				    flag_check_references); -  dtable = build3 (COMPONENT_REF, dtable_ptr_type, dtable, -		   lookup_field (&object_type_node, dtable_ident), NULL_TREE); - -  return dtable; -} - -/* Determine the index in SYMBOL_TABLE for a reference to the decl -   T. If this decl has not been seen before, it will be added to the -   [oa]table_methods. If it has, the existing table slot will be -   reused.  */ - -int -get_symbol_table_index (tree t, tree special, -			vec<method_entry, va_gc> **symbol_table) -{ -  method_entry *e; -  unsigned i; -  method_entry elem = {t, special}; - -  FOR_EACH_VEC_SAFE_ELT (*symbol_table, i, e) -    if (t == e->method && special == e->special) -      goto done; - -  vec_safe_push (*symbol_table, elem); - - done: -  return i + 1; -} - -tree  -build_invokevirtual (tree dtable, tree method, tree special) -{ -  tree func; -  tree nativecode_ptr_ptr_type_node -    = build_pointer_type (nativecode_ptr_type_node); -  tree method_index; -  tree otable_index; - -  if (flag_indirect_dispatch) -    { -      gcc_assert (! CLASS_INTERFACE (TYPE_NAME (DECL_CONTEXT (method)))); - -      otable_index  -	= build_int_cst (NULL_TREE, get_symbol_table_index  -			 (method, special, -			  &TYPE_OTABLE_METHODS (output_class))); -      method_index = build4 (ARRAY_REF, integer_type_node,  -			     TYPE_OTABLE_DECL (output_class),  -			     otable_index, NULL_TREE, NULL_TREE); -    } -  else -    { -      /* We fetch the DECL_VINDEX field directly here, rather than -	 using get_method_index().  DECL_VINDEX is the true offset -	 from the vtable base to a method, regrdless of any extra -	 words inserted at the start of the vtable.  */ -      method_index = DECL_VINDEX (method); -      method_index = size_binop (MULT_EXPR, method_index, -				 TYPE_SIZE_UNIT (nativecode_ptr_ptr_type_node)); -      if (TARGET_VTABLE_USES_DESCRIPTORS) -	method_index = size_binop (MULT_EXPR, method_index, -				   size_int (TARGET_VTABLE_USES_DESCRIPTORS)); -    } - -  func = fold_build_pointer_plus (dtable, method_index); - -  if (TARGET_VTABLE_USES_DESCRIPTORS) -    func = build1 (NOP_EXPR, nativecode_ptr_type_node, func); -  else -    { -      func = fold_convert (nativecode_ptr_ptr_type_node, func); -      func = build1 (INDIRECT_REF, nativecode_ptr_type_node, func); -    } - -  return func; -} - -static GTY(()) tree class_ident; -tree -build_invokeinterface (tree dtable, tree method) -{ -  tree interface; -  tree idx; - -  /* We expand invokeinterface here.  */ -	     -  if (class_ident == NULL_TREE) -    class_ident = get_identifier ("class"); - -  dtable = build_java_indirect_ref (dtable_type, dtable, -				    flag_check_references); -  dtable = build3 (COMPONENT_REF, class_ptr_type, dtable, -		   lookup_field (&dtable_type, class_ident), NULL_TREE); - -  interface = DECL_CONTEXT (method); -  gcc_assert (CLASS_INTERFACE (TYPE_NAME (interface))); -  layout_class_methods (interface); -   -  if (flag_indirect_dispatch) -    { -      int itable_index  -	= 2 * (get_symbol_table_index  -	       (method, NULL_TREE, &TYPE_ITABLE_METHODS (output_class))); -      interface  -	= build4 (ARRAY_REF,  -		 TREE_TYPE (TREE_TYPE (TYPE_ITABLE_DECL (output_class))), -		 TYPE_ITABLE_DECL (output_class),  -		  build_int_cst (NULL_TREE, itable_index-1), -		  NULL_TREE, NULL_TREE); -      idx  -	= build4 (ARRAY_REF,  -		 TREE_TYPE (TREE_TYPE (TYPE_ITABLE_DECL (output_class))), -		 TYPE_ITABLE_DECL (output_class),  -		  build_int_cst (NULL_TREE, itable_index), -		  NULL_TREE, NULL_TREE); -      interface = convert (class_ptr_type, interface); -      idx = convert (integer_type_node, idx); -    } -  else -    { -      idx = build_int_cst (NULL_TREE,  -			   get_interface_method_index (method, interface)); -      interface = build_class_ref (interface); -    } -				     			   -  return build_call_nary (ptr_type_node,  -			  build_address_of (soft_lookupinterfacemethod_node), -			  3, dtable, interface, idx); -} -   -/* Expand one of the invoke_* opcodes. -   OPCODE is the specific opcode. -   METHOD_REF_INDEX is an index into the constant pool. -   NARGS is the number of arguments, or -1 if not specified. */ - -static void -expand_invoke (int opcode, int method_ref_index, int nargs ATTRIBUTE_UNUSED) -{ -  tree method_signature -    = COMPONENT_REF_SIGNATURE(¤t_jcf->cpool, method_ref_index); -  tree method_name = COMPONENT_REF_NAME (¤t_jcf->cpool, -					 method_ref_index); -  tree self_type -    = get_class_constant (current_jcf, -                          COMPONENT_REF_CLASS_INDEX(¤t_jcf->cpool, -                          method_ref_index)); -  const char *const self_name -    = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (self_type))); -  tree call, func, method, method_type; -  vec<tree, va_gc> *arg_list; -  tree check = NULL_TREE; - -  tree special = NULL_TREE; - -  if (! CLASS_LOADED_P (self_type)) -    { -      load_class (self_type, 1); -      safe_layout_class (self_type); -      if (TREE_CODE (TYPE_SIZE (self_type)) == ERROR_MARK) -	fatal_error ("failed to find class '%s'", self_name); -    } -  layout_class_methods (self_type); - -  if (ID_INIT_P (method_name)) -    method = lookup_java_constructor (self_type, method_signature); -  else -    method = lookup_java_method (self_type, method_name, method_signature); - -  /* We've found a method in a class other than the one in which it -     was wanted.  This can happen if, for instance, we're trying to -     compile invokespecial super.equals().   -     FIXME: This is a kludge.  Rather than nullifying the result, we -     should change lookup_java_method() so that it doesn't search the -     superclass chain when we're BC-compiling.  */ -  if (! flag_verify_invocations -      && method -      && ! TYPE_ARRAY_P (self_type) -      && self_type != DECL_CONTEXT (method)) -    method = NULL_TREE; - -  /* We've found a method in an interface, but this isn't an interface -     call.  */ -  if (opcode != OPCODE_invokeinterface -      && method -      && (CLASS_INTERFACE (TYPE_NAME (DECL_CONTEXT (method))))) -    method = NULL_TREE; - -  /* We've found a non-interface method but we are making an -     interface call.  This can happen if the interface overrides a -     method in Object.  */ -  if (! flag_verify_invocations -      && opcode == OPCODE_invokeinterface -      && method -      && ! CLASS_INTERFACE (TYPE_NAME (DECL_CONTEXT (method)))) -    method = NULL_TREE; - -  if (method == NULL_TREE) -    { -      if (flag_verify_invocations || ! flag_indirect_dispatch) -	{ -	  error ("class '%s' has no method named '%s' matching signature '%s'", -		 self_name, -		 IDENTIFIER_POINTER (method_name), -		 IDENTIFIER_POINTER (method_signature)); -	} -      else -	{ -	  int flags = ACC_PUBLIC; -	  if (opcode == OPCODE_invokestatic) -	    flags |= ACC_STATIC; -	  if (opcode == OPCODE_invokeinterface) -	    { -	      flags |= ACC_INTERFACE | ACC_ABSTRACT; -	      CLASS_INTERFACE (TYPE_NAME (self_type)) = 1; -	    } -	  method = add_method (self_type, flags, method_name, -			       method_signature); -	  DECL_ARTIFICIAL (method) = 1; -	  METHOD_DUMMY (method) = 1; -	  layout_class_method (self_type, NULL, -			       method, NULL); -	} -    } - -  /* Invoke static can't invoke static/abstract method */ -  if (method != NULL_TREE) -    { -      if (opcode == OPCODE_invokestatic) -	{ -	  if (!METHOD_STATIC (method)) -	    { -	      error ("invokestatic on non static method"); -	      method = NULL_TREE; -	    } -	  else if (METHOD_ABSTRACT (method)) -	    { -	      error ("invokestatic on abstract method"); -	      method = NULL_TREE; -	    } -	} -      else -	{ -	  if (METHOD_STATIC (method)) -	    { -	      error ("invoke[non-static] on static method"); -	      method = NULL_TREE; -	    } -	} -    } - -  if (method == NULL_TREE) -    { -      /* If we got here, we emitted an error message above.  So we -	 just pop the arguments, push a properly-typed zero, and -	 continue.  */ -      method_type = get_type_from_signature (method_signature); -      pop_arguments (method_type); -      if (opcode != OPCODE_invokestatic)  -	pop_type (self_type); -      method_type = promote_type (TREE_TYPE (method_type)); -      push_value (convert (method_type, integer_zero_node)); -      return; -    } - -  arg_list = pop_arguments (TREE_TYPE (method)); -  flush_quick_stack (); - -  maybe_rewrite_invocation (&method, &arg_list, &method_signature, -			    &special); -  method_type = TREE_TYPE (method); - -  func = NULL_TREE; -  if (opcode == OPCODE_invokestatic) -    func = build_known_method_ref (method, method_type, self_type, -				   method_signature, arg_list, special); -  else if (opcode == OPCODE_invokespecial -	   || (opcode == OPCODE_invokevirtual -	       && (METHOD_PRIVATE (method) -		   || METHOD_FINAL (method)  -		   || CLASS_FINAL (TYPE_NAME (self_type))))) -    { -      /* If the object for the method call is null, we throw an -	 exception.  We don't do this if the object is the current -	 method's `this'.  In other cases we just rely on an -	 optimization pass to eliminate redundant checks.  FIXME: -	 Unfortunately there doesn't seem to be a way to determine -	 what the current method is right now. -	 We do omit the check if we're calling <init>.  */ -      /* We use a SAVE_EXPR here to make sure we only evaluate -	 the new `self' expression once.  */ -      tree save_arg = save_expr ((*arg_list)[0]); -      (*arg_list)[0] = save_arg; -      check = java_check_reference (save_arg, ! DECL_INIT_P (method)); -      func = build_known_method_ref (method, method_type, self_type, -				     method_signature, arg_list, special); -    } -  else -    { -      tree dtable = invoke_build_dtable (opcode == OPCODE_invokeinterface,  -					 arg_list); -      if (opcode == OPCODE_invokevirtual) -	func = build_invokevirtual (dtable, method, special); -      else -	func = build_invokeinterface (dtable, method); -    } -       -  if (TREE_CODE (func) == ADDR_EXPR) -    TREE_TYPE (func) = build_pointer_type (method_type); -  else -    func = build1 (NOP_EXPR, build_pointer_type (method_type), func); - -  call = build_call_vec (TREE_TYPE (method_type), func, arg_list); -  TREE_SIDE_EFFECTS (call) = 1; -  call = check_for_builtin (method, call); - -  if (check != NULL_TREE) -    { -      call = build2 (COMPOUND_EXPR, TREE_TYPE (call), check, call); -      TREE_SIDE_EFFECTS (call) = 1; -    } - -  if (TREE_CODE (TREE_TYPE (method_type)) == VOID_TYPE) -    java_add_stmt (call); -  else -    { -      push_value (call); -      flush_quick_stack (); -    } -} - -/* Create a stub which will be put into the vtable but which will call -   a JNI function.  */ - -tree -build_jni_stub (tree method) -{ -  tree jnifunc, call, body, method_sig, arg_types; -  tree jniarg0, jniarg1, jniarg2, jniarg3; -  tree jni_func_type, tem; -  tree env_var, res_var = NULL_TREE, block; -  tree method_args; -  tree meth_var; -  tree bind; -  vec<tree, va_gc> *args = NULL; -  int args_size = 0; - -  tree klass = DECL_CONTEXT (method); -  klass = build_class_ref (klass); - -  gcc_assert (METHOD_NATIVE (method) && flag_jni); - -  DECL_ARTIFICIAL (method) = 1; -  DECL_EXTERNAL (method) = 0; - -  env_var = build_decl (input_location, -			VAR_DECL, get_identifier ("env"), ptr_type_node); -  DECL_CONTEXT (env_var) = method; - -  if (TREE_TYPE (TREE_TYPE (method)) != void_type_node) -    { -      res_var = build_decl (input_location, VAR_DECL, get_identifier ("res"), -			    TREE_TYPE (TREE_TYPE (method))); -      DECL_CONTEXT (res_var) = method; -      DECL_CHAIN (env_var) = res_var; -    } - -  method_args = DECL_ARGUMENTS (method); -  block = build_block (env_var, NULL_TREE, method_args, NULL_TREE); -  TREE_SIDE_EFFECTS (block) = 1; - -  /* Compute the local `env' by calling _Jv_GetJNIEnvNewFrame.  */ -  body = build2 (MODIFY_EXPR, ptr_type_node, env_var, -		 build_call_nary (ptr_type_node, -				  build_address_of (soft_getjnienvnewframe_node), -				  1, klass)); - -  /* The JNIEnv structure is the first argument to the JNI function.  */ -  args_size += int_size_in_bytes (TREE_TYPE (env_var)); -  vec_safe_push (args, env_var); - -  /* For a static method the second argument is the class.  For a -     non-static method the second argument is `this'; that is already -     available in the argument list.  */ -  if (METHOD_STATIC (method)) -    { -      args_size += int_size_in_bytes (TREE_TYPE (klass)); -      vec_safe_push (args, klass); -    } - -  /* All the arguments to this method become arguments to the -     underlying JNI function.  If we had to wrap object arguments in a -     special way, we would do that here.  */ -  for (tem = method_args; tem != NULL_TREE; tem = DECL_CHAIN (tem)) -    { -      int arg_bits = TREE_INT_CST_LOW (TYPE_SIZE (TREE_TYPE (tem))); -#ifdef PARM_BOUNDARY -      arg_bits = (((arg_bits + PARM_BOUNDARY - 1) / PARM_BOUNDARY) -                  * PARM_BOUNDARY); -#endif -      args_size += (arg_bits / BITS_PER_UNIT); - -      vec_safe_push (args, tem); -    } -  arg_types = TYPE_ARG_TYPES (TREE_TYPE (method)); - -  /* Argument types for static methods and the JNIEnv structure. -     FIXME: Write and use build_function_type_vec to avoid this.  */ -  if (METHOD_STATIC (method)) -    arg_types = tree_cons (NULL_TREE, object_ptr_type_node, arg_types); -  arg_types = tree_cons (NULL_TREE, ptr_type_node, arg_types); - -  /* We call _Jv_LookupJNIMethod to find the actual underlying -     function pointer.  _Jv_LookupJNIMethod will throw the appropriate -     exception if this function is not found at runtime.  */ -  method_sig = build_java_signature (TREE_TYPE (method)); -  jniarg0 = klass; -  jniarg1 = build_utf8_ref (DECL_NAME (method)); -  jniarg2 = build_utf8_ref (unmangle_classname -			    (IDENTIFIER_POINTER (method_sig), -			     IDENTIFIER_LENGTH (method_sig))); -  jniarg3 = build_int_cst (NULL_TREE, args_size); - -  tem = build_function_type (TREE_TYPE (TREE_TYPE (method)), arg_types); - -#ifdef MODIFY_JNI_METHOD_CALL -  tem = MODIFY_JNI_METHOD_CALL (tem); -#endif - -  jni_func_type = build_pointer_type (tem); - -  /* Use the actual function type, rather than a generic pointer type, -     such that this decl keeps the actual pointer type from being -     garbage-collected.  If it is, we end up using canonical types -     with different uids for equivalent function types, and this in -     turn causes utf8 identifiers and output order to vary.  */ -  meth_var = build_decl (input_location, -			 VAR_DECL, get_identifier ("meth"), jni_func_type); -  TREE_STATIC (meth_var) = 1; -  TREE_PUBLIC (meth_var) = 0; -  DECL_EXTERNAL (meth_var) = 0; -  DECL_CONTEXT (meth_var) = method; -  DECL_ARTIFICIAL (meth_var) = 1; -  DECL_INITIAL (meth_var) = null_pointer_node; -  TREE_USED (meth_var) = 1; -  chainon (env_var, meth_var); -  build_result_decl (method); - -  jnifunc = build3 (COND_EXPR, jni_func_type, -		    build2 (NE_EXPR, boolean_type_node, -			    meth_var, build_int_cst (TREE_TYPE (meth_var), 0)), -		    meth_var, -		    build2 (MODIFY_EXPR, jni_func_type, meth_var, -			    build1 -			    (NOP_EXPR, jni_func_type, -			     build_call_nary (ptr_type_node, -					      build_address_of -					      (soft_lookupjnimethod_node), -					      4, -					      jniarg0, jniarg1, -					      jniarg2, jniarg3)))); - -  /* Now we make the actual JNI call via the resulting function -     pointer.    */ -  call = build_call_vec (TREE_TYPE (TREE_TYPE (method)), jnifunc, args); - -  /* If the JNI call returned a result, capture it here.  If we had to -     unwrap JNI object results, we would do that here.  */ -  if (res_var != NULL_TREE) -    { -      /* If the call returns an object, it may return a JNI weak -	 reference, in which case we must unwrap it.  */ -      if (! JPRIMITIVE_TYPE_P (TREE_TYPE (TREE_TYPE (method)))) -	call = build_call_nary (TREE_TYPE (TREE_TYPE (method)), -				build_address_of (soft_unwrapjni_node), -				1, call); -      call = build2 (MODIFY_EXPR, TREE_TYPE (TREE_TYPE (method)), -		     res_var, call); -    } - -  TREE_SIDE_EFFECTS (call) = 1; - -  body = build2 (COMPOUND_EXPR, void_type_node, body, call); -  TREE_SIDE_EFFECTS (body) = 1; - -  /* Now free the environment we allocated.  */ -  call = build_call_nary (ptr_type_node, -			  build_address_of (soft_jnipopsystemframe_node), -			  1, env_var); -  TREE_SIDE_EFFECTS (call) = 1; -  body = build2 (COMPOUND_EXPR, void_type_node, body, call); -  TREE_SIDE_EFFECTS (body) = 1; - -  /* Finally, do the return.  */ -  if (res_var != NULL_TREE) -    { -      tree drt; -      gcc_assert (DECL_RESULT (method)); -      /* Make sure we copy the result variable to the actual -	 result.  We use the type of the DECL_RESULT because it -	 might be different from the return type of the function: -	 it might be promoted.  */ -      drt = TREE_TYPE (DECL_RESULT (method)); -      if (drt != TREE_TYPE (res_var)) -	res_var = build1 (CONVERT_EXPR, drt, res_var); -      res_var = build2 (MODIFY_EXPR, drt, DECL_RESULT (method), res_var); -      TREE_SIDE_EFFECTS (res_var) = 1; -    } - -  body = build2 (COMPOUND_EXPR, void_type_node, body, -		 build1 (RETURN_EXPR, void_type_node, res_var)); -  TREE_SIDE_EFFECTS (body) = 1; -   -  /* Prepend class initialization for static methods reachable from -     other classes.  */ -  if (METHOD_STATIC (method) -      && (! METHOD_PRIVATE (method) -          || INNER_CLASS_P (DECL_CONTEXT (method)))) -    { -      tree init = build_call_expr (soft_initclass_node, 1,  -				   klass); -      body = build2 (COMPOUND_EXPR, void_type_node, init, body); -      TREE_SIDE_EFFECTS (body) = 1; -    } - -  bind = build3 (BIND_EXPR, void_type_node, BLOCK_VARS (block),  -		 body, block); -  return bind; -} - - -/* Given lvalue EXP, return a volatile expression that references the -   same object.  */ - -tree -java_modify_addr_for_volatile (tree exp) -{ -  tree exp_type = TREE_TYPE (exp); -  tree v_type  -    = build_qualified_type (exp_type, -			    TYPE_QUALS (exp_type) | TYPE_QUAL_VOLATILE); -  tree addr = build_fold_addr_expr (exp); -  v_type = build_pointer_type (v_type); -  addr = fold_convert (v_type, addr); -  exp = build_fold_indirect_ref (addr); -  return exp; -} - - -/* Expand an operation to extract from or store into a field. -   IS_STATIC is 1 iff the field is static. -   IS_PUTTING is 1 for putting into a field;  0 for getting from the field. -   FIELD_REF_INDEX is an index into the constant pool.  */ - -static void -expand_java_field_op (int is_static, int is_putting, int field_ref_index) -{ -  tree self_type -    = get_class_constant (current_jcf, -                          COMPONENT_REF_CLASS_INDEX (¤t_jcf->cpool, -                          field_ref_index)); -  const char *self_name -    = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (self_type))); -  tree field_name = COMPONENT_REF_NAME (¤t_jcf->cpool, field_ref_index); -  tree field_signature = COMPONENT_REF_SIGNATURE (¤t_jcf->cpool,  -						  field_ref_index); -  tree field_type = get_type_from_signature (field_signature); -  tree new_value = is_putting ? pop_value (field_type) : NULL_TREE; -  tree field_ref; -  int is_error = 0; -  tree original_self_type = self_type; -  tree field_decl; -  tree modify_expr; -   -  if (! CLASS_LOADED_P (self_type)) -    load_class (self_type, 1);   -  field_decl = lookup_field (&self_type, field_name); -  if (field_decl == error_mark_node) -    { -      is_error = 1; -    } -  else if (field_decl == NULL_TREE) -    { -      if (! flag_verify_invocations) -	{ -	  int flags = ACC_PUBLIC; -	  if (is_static) -	    flags |= ACC_STATIC; -	  self_type = original_self_type; -	  field_decl = add_field (original_self_type, field_name, -				  field_type, flags);  -	  DECL_ARTIFICIAL (field_decl) = 1; -	  DECL_IGNORED_P (field_decl) = 1; -#if 0 -	  /* FIXME: We should be pessimistic about volatility.  We -	     don't know one way or another, but this is safe. -	     However, doing this has bad effects on code quality.  We -	     need to look at better ways to do this.  */ -	  TREE_THIS_VOLATILE (field_decl) = 1; -#endif -	} -      else -	{       -	  error ("missing field '%s' in '%s'", -		 IDENTIFIER_POINTER (field_name), self_name); -	  is_error = 1; -      } -    } -  else if (build_java_signature (TREE_TYPE (field_decl)) != field_signature) -    { -      error ("mismatching signature for field '%s' in '%s'", -	     IDENTIFIER_POINTER (field_name), self_name); -      is_error = 1; -    } -  field_ref = is_static ? NULL_TREE : pop_value (self_type); -  if (is_error) -    { -      if (! is_putting) -	push_value (convert (field_type, integer_zero_node)); -      flush_quick_stack (); -      return; -    } - -  field_ref = build_field_ref (field_ref, self_type, field_name); -  if (is_static -      && ! flag_indirect_dispatch) -    { -      tree context = DECL_CONTEXT (field_ref); -      if (context != self_type && CLASS_INTERFACE (TYPE_NAME (context))) -	field_ref = build_class_init (context, field_ref); -      else -	field_ref = build_class_init (self_type, field_ref); -    } -  if (is_putting) -    { -      flush_quick_stack (); -      if (FIELD_FINAL (field_decl)) -	{ -	  if (DECL_CONTEXT (field_decl) != current_class) -            error ("assignment to final field %q+D not in field%'s class", -                   field_decl); -	  /* We used to check for assignments to final fields not -	     occurring in the class initializer or in a constructor -	     here.  However, this constraint doesn't seem to be -	     enforced by the JVM.  */ -	}       - -      if (TREE_THIS_VOLATILE (field_decl)) -	field_ref = java_modify_addr_for_volatile (field_ref); - -      modify_expr = build2 (MODIFY_EXPR, TREE_TYPE (field_ref), -			    field_ref, new_value); - -      if (TREE_THIS_VOLATILE (field_decl)) -	{ -	  tree sync = builtin_decl_explicit (BUILT_IN_SYNC_SYNCHRONIZE); -	  java_add_stmt (build_call_expr (sync, 0)); -	} -      	   -      java_add_stmt (modify_expr); -    } -  else -    { -      tree temp = build_decl (input_location, -			      VAR_DECL, NULL_TREE, TREE_TYPE (field_ref)); -      java_add_local_var (temp); - -      if (TREE_THIS_VOLATILE (field_decl)) -	field_ref = java_modify_addr_for_volatile (field_ref); - -      modify_expr  -	= build2 (MODIFY_EXPR, TREE_TYPE (field_ref), temp, field_ref); -      java_add_stmt (modify_expr); - -      if (TREE_THIS_VOLATILE (field_decl)) -	{ -	  tree sync = builtin_decl_explicit (BUILT_IN_SYNC_SYNCHRONIZE); -	  java_add_stmt (build_call_expr (sync, 0)); -	} - -      push_value (temp); -    }       -  TREE_THIS_VOLATILE (field_ref) = TREE_THIS_VOLATILE (field_decl); -} - -static void -load_type_state (int pc) -{ -  int i; -  tree vec = (*type_states)[pc]; -  int cur_length = TREE_VEC_LENGTH (vec); -  stack_pointer = cur_length - DECL_MAX_LOCALS(current_function_decl); -  for (i = 0; i < cur_length; i++) -    type_map [i] = TREE_VEC_ELT (vec, i); -} - -/* Go over METHOD's bytecode and note instruction starts in -   instruction_bits[].  */ - -void -note_instructions (JCF *jcf, tree method) -{ -  int PC;  -  unsigned char* byte_ops; -  long length = DECL_CODE_LENGTH (method); - -  int saw_index; -  jint INT_temp; - -#undef RET /* Defined by config/i386/i386.h */ -#undef PTR -#define BCODE byte_ops -#define BYTE_type_node byte_type_node -#define SHORT_type_node short_type_node -#define INT_type_node int_type_node -#define LONG_type_node long_type_node -#define CHAR_type_node char_type_node -#define PTR_type_node ptr_type_node -#define FLOAT_type_node float_type_node -#define DOUBLE_type_node double_type_node -#define VOID_type_node void_type_node -#define CONST_INDEX_1 (saw_index = 1, IMMEDIATE_u1) -#define CONST_INDEX_2 (saw_index = 1, IMMEDIATE_u2) -#define VAR_INDEX_1 (saw_index = 1, IMMEDIATE_u1) -#define VAR_INDEX_2 (saw_index = 1, IMMEDIATE_u2) - -#define CHECK_PC_IN_RANGE(PC) ((void)1) /* Already handled by verifier. */ - -  JCF_SEEK (jcf, DECL_CODE_OFFSET (method)); -  byte_ops = jcf->read_ptr; -  instruction_bits = XRESIZEVAR (char, instruction_bits, length + 1); -  memset (instruction_bits, 0, length + 1); -  vec_alloc (type_states, length + 1); -  type_states->quick_grow_cleared (length + 1); - -  /* This pass figures out which PC can be the targets of jumps. */ -  for (PC = 0; PC < length;) -    { -      int oldpc = PC; /* PC at instruction start. */ -      instruction_bits [PC] |=  BCODE_INSTRUCTION_START; -      switch (byte_ops[PC++]) -	{ -#define JAVAOP(OPNAME, OPCODE, OPKIND, OPERAND_TYPE, OPERAND_VALUE) \ -        case OPCODE: \ -	  PRE_##OPKIND(OPERAND_TYPE, OPERAND_VALUE); \ -	  break; - -#define NOTE_LABEL(PC) note_label(oldpc, PC) - -#define PRE_PUSHC(OPERAND_TYPE, OPERAND_VALUE) (void)(OPERAND_VALUE); -#define PRE_LOAD(OPERAND_TYPE, OPERAND_VALUE) (void)(OPERAND_VALUE); -#define PRE_STORE(OPERAND_TYPE, OPERAND_VALUE) (void)(OPERAND_VALUE); -#define PRE_STACK(OPERAND_TYPE, OPERAND_VALUE) /* nothing */ -#define PRE_UNOP(OPERAND_TYPE, OPERAND_VALUE) /* nothing */ -#define PRE_BINOP(OPERAND_TYPE, OPERAND_VALUE) /* nothing */ -#define PRE_CONVERT(OPERAND_TYPE, OPERAND_VALUE) /* nothing */ -#define PRE_CONVERT2(OPERAND_TYPE, OPERAND_VALUE) /* nothing */ - -#define PRE_SPECIAL(OPERAND_TYPE, INSTRUCTION) \ -  PRE_SPECIAL_##INSTRUCTION(OPERAND_TYPE) -#define PRE_SPECIAL_IINC(OPERAND_TYPE) \ -  ((void) IMMEDIATE_u1, (void) IMMEDIATE_s1) -#define PRE_SPECIAL_ENTER(IGNORE) /* nothing */ -#define PRE_SPECIAL_EXIT(IGNORE) /* nothing */ -#define PRE_SPECIAL_THROW(IGNORE) /* nothing */ -#define PRE_SPECIAL_BREAK(IGNORE) /* nothing */ - -/* two forms of wide instructions */ -#define PRE_SPECIAL_WIDE(IGNORE) \ -  { \ -    int modified_opcode = IMMEDIATE_u1; \ -    if (modified_opcode == OPCODE_iinc)	\ -      { \ -	(void) IMMEDIATE_u2;	/* indexbyte1 and indexbyte2 */ \ -	(void) IMMEDIATE_s2;	/* constbyte1 and constbyte2 */ \ -      } \ -    else \ -      { \ -	(void) IMMEDIATE_u2;	/* indexbyte1 and indexbyte2 */ \ -      } \ -  } - -#define PRE_IMPL(IGNORE1, IGNORE2) /* nothing */ - -#define PRE_MONITOR(OPERAND_TYPE, OPERAND_VALUE) /* nothing */ - -#define PRE_RETURN(OPERAND_TYPE, OPERAND_VALUE) /* nothing */ -#define PRE_ARRAY(OPERAND_TYPE, SUBOP) \ -	  PRE_ARRAY_##SUBOP(OPERAND_TYPE) -#define PRE_ARRAY_LOAD(TYPE) /* nothing */ -#define PRE_ARRAY_STORE(TYPE) /* nothing */ -#define PRE_ARRAY_LENGTH(TYPE) /* nothing */ -#define PRE_ARRAY_NEW(TYPE) PRE_ARRAY_NEW_##TYPE -#define PRE_ARRAY_NEW_NUM ((void) IMMEDIATE_u1) -#define PRE_ARRAY_NEW_PTR ((void) IMMEDIATE_u2) -#define PRE_ARRAY_NEW_MULTI ((void) IMMEDIATE_u2, (void) IMMEDIATE_u1) - -#define PRE_TEST(OPERAND_TYPE, OPERAND_VALUE) NOTE_LABEL (oldpc+IMMEDIATE_s2) -#define PRE_COND(OPERAND_TYPE, OPERAND_VALUE) NOTE_LABEL (oldpc+IMMEDIATE_s2) -#define PRE_BRANCH(OPERAND_TYPE, OPERAND_VALUE) \ -  saw_index = 0;  INT_temp = (OPERAND_VALUE); \ -  if (!saw_index)  NOTE_LABEL(oldpc + INT_temp); -#define PRE_JSR(OPERAND_TYPE, OPERAND_VALUE) \ -  saw_index = 0;  INT_temp = (OPERAND_VALUE); \ -  NOTE_LABEL (PC); \ -  if (!saw_index)  NOTE_LABEL(oldpc + INT_temp); - -#define PRE_RET(OPERAND_TYPE, OPERAND_VALUE)  (void)(OPERAND_VALUE) - -#define PRE_SWITCH(OPERAND_TYPE, TABLE_OR_LOOKUP) \ -  PC = (PC + 3) / 4 * 4; PRE_##TABLE_OR_LOOKUP##_SWITCH - -#define PRE_LOOKUP_SWITCH						\ -  { jint default_offset = IMMEDIATE_s4;  jint npairs = IMMEDIATE_s4;	\ -    NOTE_LABEL (default_offset+oldpc);					\ -    if (npairs >= 0)							\ -      while (--npairs >= 0) {						\ -       jint match ATTRIBUTE_UNUSED = IMMEDIATE_s4;			\ -       jint offset = IMMEDIATE_s4;					\ -       NOTE_LABEL (offset+oldpc); }					\ -  } - -#define PRE_TABLE_SWITCH				\ -  { jint default_offset = IMMEDIATE_s4;			\ -    jint low = IMMEDIATE_s4; jint high = IMMEDIATE_s4;	\ -    NOTE_LABEL (default_offset+oldpc);			\ -    if (low <= high)					\ -     while (low++ <= high) {				\ -       jint offset = IMMEDIATE_s4;			\ -       NOTE_LABEL (offset+oldpc); }			\ -  } - -#define PRE_FIELD(MAYBE_STATIC, PUT_OR_GET) (void)(IMMEDIATE_u2); -#define PRE_OBJECT(MAYBE_STATIC, PUT_OR_GET) (void)(IMMEDIATE_u2); -#define PRE_INVOKE(MAYBE_STATIC, IS_INTERFACE) \ -  (void)(IMMEDIATE_u2); \ -  PC += 2 * IS_INTERFACE /* for invokeinterface */; - -#include "javaop.def" -#undef JAVAOP -	} -    } /* for */ -} - -void -expand_byte_code (JCF *jcf, tree method) -{ -  int PC; -  int i; -  const unsigned char *linenumber_pointer; -  int dead_code_index = -1; -  unsigned char* byte_ops; -  long length = DECL_CODE_LENGTH (method); -  location_t max_location = input_location; - -  stack_pointer = 0; -  JCF_SEEK (jcf, DECL_CODE_OFFSET (method)); -  byte_ops = jcf->read_ptr; - -  /* We make an initial pass of the line number table, to note -     which instructions have associated line number entries. */ -  linenumber_pointer = linenumber_table; -  for (i = 0; i < linenumber_count; i++) -    { -      int pc = GET_u2 (linenumber_pointer); -      linenumber_pointer += 4; -      if (pc >= length) -	warning (0, "invalid PC in line number table"); -      else -	{ -	  if ((instruction_bits[pc] & BCODE_HAS_LINENUMBER) != 0) -	    instruction_bits[pc] |= BCODE_HAS_MULTI_LINENUMBERS; -	  instruction_bits[pc] |= BCODE_HAS_LINENUMBER; -	} -    }   - -  if (! verify_jvm_instructions_new (jcf, byte_ops, length)) -    return; - -  promote_arguments (); -  cache_this_class_ref (method); -  cache_cpool_data_ref (); - -  /* Translate bytecodes.  */ -  linenumber_pointer = linenumber_table; -  for (PC = 0; PC < length;) -    { -      if ((instruction_bits [PC] & BCODE_TARGET) != 0 || PC == 0) -	{ -	  tree label = lookup_label (PC); -          flush_quick_stack (); -	  if ((instruction_bits [PC] & BCODE_TARGET) != 0) -	    java_add_stmt (build1 (LABEL_EXPR, void_type_node, label)); -	  if ((instruction_bits[PC] & BCODE_VERIFIED) != 0) -	    load_type_state (PC); -	} - -      if (! (instruction_bits [PC] & BCODE_VERIFIED)) -	{ -	  if (dead_code_index == -1) -	    { -	      /* This is the start of a region of unreachable bytecodes. -                 They still need to be processed in order for EH ranges -                 to get handled correctly.  However, we can simply -                 replace these bytecodes with nops.  */ -	      dead_code_index = PC; -            } -           -          /* Turn this bytecode into a nop.  */ -          byte_ops[PC] = 0x0; -        } -       else -        { -	  if (dead_code_index != -1) -	    { -              /* We've just reached the end of a region of dead code.  */ -	      if (extra_warnings) -		warning (0, "unreachable bytecode from %d to before %d", -			 dead_code_index, PC); -              dead_code_index = -1; -            } -	} - -      /* Handle possible line number entry for this PC. - -	 This code handles out-of-order and multiple linenumbers per PC, -	 but is optimized for the case of line numbers increasing -	 monotonically with PC. */ -      if ((instruction_bits[PC] & BCODE_HAS_LINENUMBER) != 0) -	{ -	  if ((instruction_bits[PC] & BCODE_HAS_MULTI_LINENUMBERS) != 0 -	      || GET_u2 (linenumber_pointer) != PC) -	    linenumber_pointer = linenumber_table; -	  while (linenumber_pointer < linenumber_table + linenumber_count * 4) -	    { -	      int pc = GET_u2 (linenumber_pointer); -	      linenumber_pointer += 4; -	      if (pc == PC) -		{ -		  int line = GET_u2 (linenumber_pointer - 2); -		  input_location = linemap_line_start (line_table, line, 1); -		  if (input_location > max_location) -		    max_location = input_location; -		  if (!(instruction_bits[PC] & BCODE_HAS_MULTI_LINENUMBERS)) -		    break; -		} -	    } -	} -      maybe_pushlevels (PC); -      PC = process_jvm_instruction (PC, byte_ops, length); -      maybe_poplevels (PC); -    } /* for */ - -  uncache_this_class_ref (method); - -  if (dead_code_index != -1) -    { -      /* We've just reached the end of a region of dead code.  */ -      if (extra_warnings) -	warning (0, "unreachable bytecode from %d to the end of the method",  -		 dead_code_index); -    } - -  DECL_FUNCTION_LAST_LINE (method) = max_location; -} - -static void -java_push_constant_from_pool (JCF *jcf, int index) -{ -  tree c; -  if (JPOOL_TAG (jcf, index) == CONSTANT_String) -    { -      tree name; -      name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index)); -      index = alloc_name_constant (CONSTANT_String, name); -      c = build_ref_from_constant_pool (index); -      c = convert (promote_type (string_type_node), c); -    } -  else if (JPOOL_TAG (jcf, index) == CONSTANT_Class -	   || JPOOL_TAG (jcf, index) == CONSTANT_ResolvedClass) -    { -      tree record = get_class_constant (jcf, index); -      c = build_class_ref (record); -    } -  else -    c = get_constant (jcf, index); -  push_value (c); -}  - -int -process_jvm_instruction (int PC, const unsigned char* byte_ops, -			 long length ATTRIBUTE_UNUSED) -{  -  const char *opname; /* Temporary ??? */ -  int oldpc = PC; /* PC at instruction start. */ - -  /* If the instruction is at the beginning of an exception handler, -     replace the top of the stack with the thrown object reference.  */ -  if (instruction_bits [PC] & BCODE_EXCEPTION_TARGET) -    { -      /* Note that the verifier will not emit a type map at all for -	 dead exception handlers.  In this case we just ignore the -	 situation.  */ -      if ((instruction_bits[PC] & BCODE_VERIFIED) != 0) -	{ -	  tree type = pop_type (promote_type (throwable_type_node)); -	  push_value (build_exception_object_ref (type)); -	} -    } - -  switch (byte_ops[PC++]) -    { -#define JAVAOP(OPNAME, OPCODE, OPKIND, OPERAND_TYPE, OPERAND_VALUE) \ -    case OPCODE: \ -      opname = #OPNAME; \ -      OPKIND(OPERAND_TYPE, OPERAND_VALUE); \ -      break; - -#define RET(OPERAND_TYPE, OPERAND_VALUE) 				\ -  {									\ -    int saw_index = 0;							\ -    int index     = OPERAND_VALUE;					\ -    (void) saw_index; /* Avoid set but not used warning.  */		\ -    build_java_ret							\ -      (find_local_variable (index, return_address_type_node, oldpc));	\ -  } - -#define JSR(OPERAND_TYPE, OPERAND_VALUE) \ -  {						    \ -    /* OPERAND_VALUE may have side-effects on PC */ \ -    int opvalue = OPERAND_VALUE;		    \ -    build_java_jsr (oldpc + opvalue, PC);	    \ -  } - -/* Push a constant onto the stack. */ -#define PUSHC(OPERAND_TYPE, OPERAND_VALUE) \ -  { int saw_index = 0;  int ival = (OPERAND_VALUE); \ -    if (saw_index) java_push_constant_from_pool (current_jcf, ival); \ -    else expand_java_pushc (ival, OPERAND_TYPE##_type_node); } - -/* internal macro added for use by the WIDE case */ -#define LOAD_INTERNAL(OPTYPE, OPVALUE) \ -  expand_load_internal (OPVALUE, type_map[OPVALUE], oldpc); - -/* Push local variable onto the opcode stack. */ -#define LOAD(OPERAND_TYPE, OPERAND_VALUE) \ -  { \ -    /* have to do this since OPERAND_VALUE may have side-effects */ \ -    int opvalue = OPERAND_VALUE; \ -    LOAD_INTERNAL(OPERAND_TYPE##_type_node, opvalue); \ -  } - -#define RETURN(OPERAND_TYPE, OPERAND_VALUE) \ -  expand_java_return (OPERAND_TYPE##_type_node) - -#define REM_EXPR TRUNC_MOD_EXPR -#define BINOP(OPERAND_TYPE, OPERAND_VALUE) \ -  expand_java_binop (OPERAND_TYPE##_type_node, OPERAND_VALUE##_EXPR) - -#define FIELD(IS_STATIC, IS_PUT) \ -  expand_java_field_op (IS_STATIC, IS_PUT, IMMEDIATE_u2) - -#define TEST(OPERAND_TYPE, CONDITION) \ -  expand_test (CONDITION##_EXPR, OPERAND_TYPE##_type_node, oldpc+IMMEDIATE_s2) - -#define COND(OPERAND_TYPE, CONDITION) \ -  expand_cond (CONDITION##_EXPR, OPERAND_TYPE##_type_node, oldpc+IMMEDIATE_s2) - -#define BRANCH(OPERAND_TYPE, OPERAND_VALUE) \ -  BRANCH_##OPERAND_TYPE (OPERAND_VALUE) - -#define BRANCH_GOTO(OPERAND_VALUE) \ -  expand_java_goto (oldpc + OPERAND_VALUE) - -#define BRANCH_CALL(OPERAND_VALUE) \ -  expand_java_call (oldpc + OPERAND_VALUE, oldpc) - -#if 0 -#define BRANCH_RETURN(OPERAND_VALUE) \ -  { \ -    tree type = OPERAND_TYPE##_type_node; \ -    tree value = find_local_variable (OPERAND_VALUE, type, oldpc); \ -    expand_java_ret (value); \ -  } -#endif - -#define NOT_IMPL(OPERAND_TYPE, OPERAND_VALUE) \ -	  fprintf (stderr, "%3d: %s ", oldpc, opname); \ -	  fprintf (stderr, "(not implemented)\n") -#define NOT_IMPL1(OPERAND_VALUE) \ -	  fprintf (stderr, "%3d: %s ", oldpc, opname); \ -	  fprintf (stderr, "(not implemented)\n") - -#define BRANCH_RETURN(OPERAND_VALUE) NOT_IMPL1(OPERAND_VALUE) - -#define STACK(SUBOP, COUNT) STACK_##SUBOP (COUNT) - -#define STACK_POP(COUNT) java_stack_pop (COUNT) - -#define STACK_SWAP(COUNT) java_stack_swap() - -#define STACK_DUP(COUNT) java_stack_dup (COUNT, 0) -#define STACK_DUPx1(COUNT) java_stack_dup (COUNT, 1) -#define STACK_DUPx2(COUNT) java_stack_dup (COUNT, 2) - -#define SWITCH(OPERAND_TYPE, TABLE_OR_LOOKUP) \ -  PC = (PC + 3) / 4 * 4; TABLE_OR_LOOKUP##_SWITCH - -#define LOOKUP_SWITCH \ -  { jint default_offset = IMMEDIATE_s4;  jint npairs = IMMEDIATE_s4; \ -    tree selector = pop_value (INT_type_node); \ -    tree switch_expr = expand_java_switch (selector, oldpc + default_offset); \ -    while (--npairs >= 0) \ -      { \ -	jint match = IMMEDIATE_s4; jint offset = IMMEDIATE_s4; \ -	expand_java_add_case (switch_expr, match, oldpc + offset); \ -      } \ -  } - -#define TABLE_SWITCH \ -  { jint default_offset = IMMEDIATE_s4; \ -    jint low = IMMEDIATE_s4; jint high = IMMEDIATE_s4; \ -    tree selector = pop_value (INT_type_node); \ -    tree switch_expr = expand_java_switch (selector, oldpc + default_offset); \ -    for (; low <= high; low++) \ -      { \ -        jint offset = IMMEDIATE_s4; \ -	expand_java_add_case (switch_expr, low, oldpc + offset); \ -      } \ -  } - -#define INVOKE(MAYBE_STATIC, IS_INTERFACE) \ -  { int opcode = byte_ops[PC-1]; \ -    int method_ref_index = IMMEDIATE_u2; \ -    int nargs; \ -    if (IS_INTERFACE) { nargs = IMMEDIATE_u1;  (void) IMMEDIATE_u1; } \ -    else nargs = -1; \ -    expand_invoke (opcode, method_ref_index, nargs); \ -  } - -/* Handle new, checkcast, instanceof */ -#define OBJECT(TYPE, OP) \ -  expand_java_##OP (get_class_constant (current_jcf, IMMEDIATE_u2)) - -#define ARRAY(OPERAND_TYPE, SUBOP) ARRAY_##SUBOP(OPERAND_TYPE) - -#define ARRAY_LOAD(OPERAND_TYPE) 			\ -  {							\ -    expand_java_arrayload( OPERAND_TYPE##_type_node );	\ -  } - -#define ARRAY_STORE(OPERAND_TYPE)			\ -  {							\ -    expand_java_arraystore( OPERAND_TYPE##_type_node );	\ -  } - -#define ARRAY_LENGTH(OPERAND_TYPE) expand_java_array_length(); -#define ARRAY_NEW(OPERAND_TYPE) ARRAY_NEW_##OPERAND_TYPE() -#define ARRAY_NEW_PTR()							\ -    push_value (build_anewarray (get_class_constant (current_jcf,	\ -						     IMMEDIATE_u2),	\ -				 pop_value (int_type_node))); -#define ARRAY_NEW_NUM()				\ -  {						\ -    int atype = IMMEDIATE_u1;			\ -    push_value (build_newarray (atype, pop_value (int_type_node)));\ -  } -#define ARRAY_NEW_MULTI()					\ -  {								\ -    tree klass = get_class_constant (current_jcf, IMMEDIATE_u2 );	\ -    int  ndims = IMMEDIATE_u1;					\ -    expand_java_multianewarray( klass, ndims );			\ -  } - -#define UNOP(OPERAND_TYPE, OPERAND_VALUE) \ -  push_value (fold_build1 (NEGATE_EXPR, OPERAND_TYPE##_type_node, \ -			   pop_value (OPERAND_TYPE##_type_node))); - -#define CONVERT2(FROM_TYPE, TO_TYPE)					 \ -  {									 \ -    push_value (build1 (NOP_EXPR, int_type_node,			 \ -			(convert (TO_TYPE##_type_node,			 \ -				  pop_value (FROM_TYPE##_type_node))))); \ -  } - -#define CONVERT(FROM_TYPE, TO_TYPE)				\ -  {								\ -    push_value (convert (TO_TYPE##_type_node,	                \ -			 pop_value (FROM_TYPE##_type_node)));	\ -  } - -/* internal macro added for use by the WIDE case  -   Added TREE_TYPE (decl) assignment, apbianco  */ -#define STORE_INTERNAL(OPTYPE, OPVALUE)				\ -  {								\ -    tree decl, value;						\ -    int index = OPVALUE;					\ -    tree type = OPTYPE;						\ -    value = pop_value (type);					\ -    type = TREE_TYPE (value);					\ -    decl = find_local_variable (index, type, oldpc);		\ -    set_local_type (index, type);				\ -    java_add_stmt (build2 (MODIFY_EXPR, type, decl, value));	\ -  } - -#define STORE(OPERAND_TYPE, OPERAND_VALUE) \ -  { \ -    /* have to do this since OPERAND_VALUE may have side-effects */ \ -    int opvalue = OPERAND_VALUE; \ -    STORE_INTERNAL(OPERAND_TYPE##_type_node, opvalue); \ -  } - -#define SPECIAL(OPERAND_TYPE, INSTRUCTION) \ -  SPECIAL_##INSTRUCTION(OPERAND_TYPE) - -#define SPECIAL_ENTER(IGNORED) MONITOR_OPERATION (soft_monitorenter_node) -#define SPECIAL_EXIT(IGNORED)  MONITOR_OPERATION (soft_monitorexit_node) - -#define MONITOR_OPERATION(call)			\ -  {						\ -    tree o = pop_value (ptr_type_node);		\ -    tree c;					\ -    flush_quick_stack ();			\ -    c = build_java_monitor (call, o);		\ -    TREE_SIDE_EFFECTS (c) = 1;			\ -    java_add_stmt (c);				\ -  } - -#define SPECIAL_IINC(IGNORED) \ -  { \ -    unsigned int local_var_index = IMMEDIATE_u1; \ -    int ival = IMMEDIATE_s1; \ -    expand_iinc(local_var_index, ival, oldpc); \ -  } - -#define SPECIAL_WIDE(IGNORED) \ -  { \ -    int modified_opcode = IMMEDIATE_u1; \ -    unsigned int local_var_index = IMMEDIATE_u2; \ -    switch (modified_opcode) \ -      { \ -      case OPCODE_iinc: \ -	{ \ -	  int ival = IMMEDIATE_s2; \ -	  expand_iinc (local_var_index, ival, oldpc); \ -	  break; \ -	} \ -      case OPCODE_iload: \ -      case OPCODE_lload: \ -      case OPCODE_fload: \ -      case OPCODE_dload: \ -      case OPCODE_aload: \ -	{ \ -	  /* duplicate code from LOAD macro */ \ -	  LOAD_INTERNAL(operand_type[modified_opcode], local_var_index); \ -	  break; \ -	} \ -      case OPCODE_istore: \ -      case OPCODE_lstore: \ -      case OPCODE_fstore: \ -      case OPCODE_dstore: \ -      case OPCODE_astore: \ -	{ \ -	  STORE_INTERNAL(operand_type[modified_opcode], local_var_index); \ -	  break; \ -	} \ -      default: \ -        error ("unrecognized wide sub-instruction"); \ -      } \ -  } - -#define SPECIAL_THROW(IGNORED) \ -  build_java_athrow (pop_value (throwable_type_node)) - -#define SPECIAL_BREAK NOT_IMPL1 -#define IMPL          NOT_IMPL - -#include "javaop.def" -#undef JAVAOP -   default: -    fprintf (stderr, "%3d: unknown(%3d)\n", oldpc, byte_ops[PC]); -  } -  return PC; -} - -/* Return the opcode at PC in the code section pointed to by -   CODE_OFFSET.  */ - -static unsigned char -peek_opcode_at_pc (JCF *jcf, int code_offset, int pc) -{ -  unsigned char opcode; -  long absolute_offset = (long)JCF_TELL (jcf); - -  JCF_SEEK (jcf, code_offset); -  opcode = jcf->read_ptr [pc]; -  JCF_SEEK (jcf, absolute_offset); -  return opcode; -} - -/* Some bytecode compilers are emitting accurate LocalVariableTable -   attributes. Here's an example: -    -     PC   <t>store_<n> -     PC+1 ... -      -     Attribute "LocalVariableTable" -     slot #<n>: ... (PC: PC+1 length: L) -    -   This is accurate because the local in slot <n> really exists after -   the opcode at PC is executed, hence from PC+1 to PC+1+L. - -   This procedure recognizes this situation and extends the live range -   of the local in SLOT to START_PC-1 or START_PC-2 (depending on the -   length of the store instruction.) - -   This function is used by `give_name_to_locals' so that a local's -   DECL features a DECL_LOCAL_START_PC such that the first related -   store operation will use DECL as a destination, not an unrelated -   temporary created for the occasion. - -   This function uses a global (instruction_bits) `note_instructions' should -   have allocated and filled properly.  */ - -int -maybe_adjust_start_pc (struct JCF *jcf, int code_offset, -		       int start_pc, int slot) -{ -  int first, index, opcode; -  int pc, insn_pc; -  int wide_found = 0; - -  if (!start_pc) -    return start_pc; - -  first = index = -1; - -  /* Find last previous instruction and remember it */ -  for (pc = start_pc-1; pc; pc--)  -    if (instruction_bits [pc] & BCODE_INSTRUCTION_START) -      break; -  insn_pc = pc; - -  /* Retrieve the instruction, handle `wide'. */   -  opcode = (int) peek_opcode_at_pc (jcf, code_offset, pc++); -  if (opcode == OPCODE_wide) -    { -      wide_found = 1; -      opcode = (int) peek_opcode_at_pc (jcf, code_offset, pc++); -    } - -  switch (opcode) -    { -    case OPCODE_astore_0: -    case OPCODE_astore_1: -    case OPCODE_astore_2: -    case OPCODE_astore_3: -      first = OPCODE_astore_0; -      break; - -    case OPCODE_istore_0: -    case OPCODE_istore_1: -    case OPCODE_istore_2: -    case OPCODE_istore_3: -      first = OPCODE_istore_0; -      break; -       -    case OPCODE_lstore_0: -    case OPCODE_lstore_1: -    case OPCODE_lstore_2: -    case OPCODE_lstore_3: -      first = OPCODE_lstore_0; -      break; - -    case OPCODE_fstore_0: -    case OPCODE_fstore_1: -    case OPCODE_fstore_2: -    case OPCODE_fstore_3: -      first = OPCODE_fstore_0; -      break; - -    case OPCODE_dstore_0: -    case OPCODE_dstore_1: -    case OPCODE_dstore_2: -    case OPCODE_dstore_3: -      first = OPCODE_dstore_0; -      break; - -    case OPCODE_astore: -    case OPCODE_istore: -    case OPCODE_lstore: -    case OPCODE_fstore: -    case OPCODE_dstore: -      index = peek_opcode_at_pc (jcf, code_offset, pc); -      if (wide_found) -	{ -	  int other = peek_opcode_at_pc (jcf, code_offset, ++pc); -	  index = (other << 8) + index; -	} -      break; -    } - -  /* Now we decide: first >0 means we have a <t>store_<n>, index >0 -     means we have a <t>store. */ -  if ((first > 0 && opcode - first == slot) || (index > 0 && index == slot)) -    start_pc = insn_pc; - -  return start_pc; -} - -/* Build a node to represent empty statements and blocks. */ - -tree -build_java_empty_stmt (void) -{ -  tree t = build_empty_stmt (input_location); -  return t; -} - -/* Promote all args of integral type before generating any code.  */ - -static void -promote_arguments (void) -{ -  int i; -  tree arg; -  for (arg = DECL_ARGUMENTS (current_function_decl), i = 0; -       arg != NULL_TREE;  arg = DECL_CHAIN (arg), i++) -    { -      tree arg_type = TREE_TYPE (arg); -      if (INTEGRAL_TYPE_P (arg_type) -	  && TYPE_PRECISION (arg_type) < 32) -	{ -	  tree copy = find_local_variable (i, integer_type_node, -1); -	  java_add_stmt (build2 (MODIFY_EXPR, integer_type_node, -				 copy, -				 fold_convert (integer_type_node, arg))); -	} -      if (TYPE_IS_WIDE (arg_type)) -	i++; -    } -} - -/* Create a local variable that points to the constant pool.  */ - -static void -cache_cpool_data_ref (void) -{ -  if (optimize) -    { -      tree cpool; -      tree d = build_constant_data_ref (flag_indirect_classes); -      tree cpool_ptr = build_decl (input_location, VAR_DECL, NULL_TREE,  -				   build_pointer_type (TREE_TYPE (d))); -      java_add_local_var (cpool_ptr); -      TREE_CONSTANT (cpool_ptr) = 1; - -      java_add_stmt (build2 (MODIFY_EXPR, TREE_TYPE (cpool_ptr),  -			     cpool_ptr, build_address_of (d))); -      cpool = build1 (INDIRECT_REF, TREE_TYPE (d), cpool_ptr); -      TREE_THIS_NOTRAP (cpool) = 1; -      TYPE_CPOOL_DATA_REF (output_class) = cpool; -    } -} - -#include "gt-java-expr.h" | 
