202
203 // Support for native calls
204 static address slow_signature_handler() { return _slow_signature_handler; }
205 static address result_handler(BasicType type) { return _native_abi_to_tosca[BasicType_as_index(type)]; }
206 static int BasicType_as_index(BasicType type); // computes index into result_handler_by_index table
207 static bool in_native_entry(address pc) { return _native_entry_begin <= pc && pc < _native_entry_end; }
208 // Debugging/printing
209 static void print(); // prints the interpreter code
210
211 public:
212 // Interpreter helpers
213 const static int stackElementWords = 1;
214 const static int stackElementSize = stackElementWords * wordSize;
215 const static int logStackElementSize = LogBytesPerWord;
216
217 static int expr_index_at(int i) {
218 return stackElementWords * i;
219 }
220
221 static int expr_offset_in_bytes(int i) {
222 #if !defined(ZERO) && (defined(PPC) || defined(SPARC))
223 return stackElementSize * i + wordSize; // both point to one word past TOS
224 #else
225 return stackElementSize * i;
226 #endif
227 }
228
229 static int local_index_at(int i) {
230 assert(i <= 0, "local direction already negated");
231 return stackElementWords * i;
232 }
233
234 #if !defined(ZERO) && (defined(IA32) || defined(AMD64))
235 static Address::ScaleFactor stackElementScale() {
236 return NOT_LP64(Address::times_4) LP64_ONLY(Address::times_8);
237 }
238 #endif
239
240 // Local values relative to locals[n]
241 static int local_offset_in_bytes(int n) {
242 return ((frame::interpreter_frame_expression_stack_direction() * n) * stackElementSize);
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202
203 // Support for native calls
204 static address slow_signature_handler() { return _slow_signature_handler; }
205 static address result_handler(BasicType type) { return _native_abi_to_tosca[BasicType_as_index(type)]; }
206 static int BasicType_as_index(BasicType type); // computes index into result_handler_by_index table
207 static bool in_native_entry(address pc) { return _native_entry_begin <= pc && pc < _native_entry_end; }
208 // Debugging/printing
209 static void print(); // prints the interpreter code
210
211 public:
212 // Interpreter helpers
213 const static int stackElementWords = 1;
214 const static int stackElementSize = stackElementWords * wordSize;
215 const static int logStackElementSize = LogBytesPerWord;
216
217 static int expr_index_at(int i) {
218 return stackElementWords * i;
219 }
220
221 static int expr_offset_in_bytes(int i) {
222 #if !defined(ZERO) && (defined(PPC) || defined(S390) || defined(SPARC))
223 return stackElementSize * i + wordSize; // both point to one word past TOS
224 #else
225 return stackElementSize * i;
226 #endif
227 }
228
229 static int local_index_at(int i) {
230 assert(i <= 0, "local direction already negated");
231 return stackElementWords * i;
232 }
233
234 #if !defined(ZERO) && (defined(IA32) || defined(AMD64))
235 static Address::ScaleFactor stackElementScale() {
236 return NOT_LP64(Address::times_4) LP64_ONLY(Address::times_8);
237 }
238 #endif
239
240 // Local values relative to locals[n]
241 static int local_offset_in_bytes(int n) {
242 return ((frame::interpreter_frame_expression_stack_direction() * n) * stackElementSize);
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