204
205 // Support for native calls
206 static address slow_signature_handler() { return _slow_signature_handler; }
207 static address result_handler(BasicType type) { return _native_abi_to_tosca[BasicType_as_index(type)]; }
208 static int BasicType_as_index(BasicType type); // computes index into result_handler_by_index table
209 static bool in_native_entry(address pc) { return _native_entry_begin <= pc && pc < _native_entry_end; }
210 // Debugging/printing
211 static void print(); // prints the interpreter code
212
213 public:
214 // Interpreter helpers
215 const static int stackElementWords = 1;
216 const static int stackElementSize = stackElementWords * wordSize;
217 const static int logStackElementSize = LogBytesPerWord;
218
219 static int expr_index_at(int i) {
220 return stackElementWords * i;
221 }
222
223 static int expr_offset_in_bytes(int i) {
224 #if !defined(ZERO) && (defined(PPC) || defined(SPARC))
225 return stackElementSize * i + wordSize; // both point to one word past TOS
226 #else
227 return stackElementSize * i;
228 #endif
229 }
230
231 static int local_index_at(int i) {
232 assert(i <= 0, "local direction already negated");
233 return stackElementWords * i;
234 }
235
236 #if !defined(ZERO) && (defined(IA32) || defined(AMD64))
237 static Address::ScaleFactor stackElementScale() {
238 return NOT_LP64(Address::times_4) LP64_ONLY(Address::times_8);
239 }
240 #endif
241
242 // Local values relative to locals[n]
243 static int local_offset_in_bytes(int n) {
244 return ((frame::interpreter_frame_expression_stack_direction() * n) * stackElementSize);
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204
205 // Support for native calls
206 static address slow_signature_handler() { return _slow_signature_handler; }
207 static address result_handler(BasicType type) { return _native_abi_to_tosca[BasicType_as_index(type)]; }
208 static int BasicType_as_index(BasicType type); // computes index into result_handler_by_index table
209 static bool in_native_entry(address pc) { return _native_entry_begin <= pc && pc < _native_entry_end; }
210 // Debugging/printing
211 static void print(); // prints the interpreter code
212
213 public:
214 // Interpreter helpers
215 const static int stackElementWords = 1;
216 const static int stackElementSize = stackElementWords * wordSize;
217 const static int logStackElementSize = LogBytesPerWord;
218
219 static int expr_index_at(int i) {
220 return stackElementWords * i;
221 }
222
223 static int expr_offset_in_bytes(int i) {
224 #if !defined(ZERO) && (defined(PPC) || defined(S390) || defined(SPARC))
225 return stackElementSize * i + wordSize; // both point to one word past TOS
226 #else
227 return stackElementSize * i;
228 #endif
229 }
230
231 static int local_index_at(int i) {
232 assert(i <= 0, "local direction already negated");
233 return stackElementWords * i;
234 }
235
236 #if !defined(ZERO) && (defined(IA32) || defined(AMD64))
237 static Address::ScaleFactor stackElementScale() {
238 return NOT_LP64(Address::times_4) LP64_ONLY(Address::times_8);
239 }
240 #endif
241
242 // Local values relative to locals[n]
243 static int local_offset_in_bytes(int n) {
244 return ((frame::interpreter_frame_expression_stack_direction() * n) * stackElementSize);
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