198     jmp(rax);
 199     bind(L);
 200     get_thread(java_thread);
 201   }
 202 }
 203 
 204 
 205 void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset) {
 206   assert(bcp_offset >= 0, "bcp is still pointing to start of bytecode");
 207   movl(reg, Address(rsi, bcp_offset));
 208   bswapl(reg);
 209   shrl(reg, 16);
 210 }
 211 
 212 
 213 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register reg, int bcp_offset, size_t index_size) {
 214   assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
 215   if (index_size == sizeof(u2)) {
 216     load_unsigned_short(reg, Address(rsi, bcp_offset));
 217   } else if (index_size == sizeof(u4)) {
 218     assert(EnableInvokeDynamic, "giant index used only for EnableInvokeDynamic");
 219     movl(reg, Address(rsi, bcp_offset));
 220     // Check if the secondary index definition is still ~x, otherwise
 221     // we have to change the following assembler code to calculate the
 222     // plain index.
 223     assert(constantPoolCacheOopDesc::decode_secondary_index(~123) == 123, "else change next line");
 224     notl(reg);  // convert to plain index
 225   } else if (index_size == sizeof(u1)) {
 226     assert(EnableMethodHandles, "tiny index used only for EnableMethodHandles");
 227     load_unsigned_byte(reg, Address(rsi, bcp_offset));
 228   } else {
 229     ShouldNotReachHere();
 230   }
 231 }
 232 
 233 
 234 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register index,
 235                                                            int bcp_offset, size_t index_size) {
 236   assert(cache != index, "must use different registers");
 237   get_cache_index_at_bcp(index, bcp_offset, index_size);
 238   movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize));
 239   assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below");
 240   shlptr(index, 2); // convert from field index to ConstantPoolCacheEntry index
 241 }
 242 
 243 
 244 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp,
 245                                                                int bcp_offset, size_t index_size) {
 246   assert(cache != tmp, "must use different register");

 198     jmp(rax);
 199     bind(L);
 200     get_thread(java_thread);
 201   }
 202 }
 203 
 204 
 205 void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset) {
 206   assert(bcp_offset >= 0, "bcp is still pointing to start of bytecode");
 207   movl(reg, Address(rsi, bcp_offset));
 208   bswapl(reg);
 209   shrl(reg, 16);
 210 }
 211 
 212 
 213 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register reg, int bcp_offset, size_t index_size) {
 214   assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
 215   if (index_size == sizeof(u2)) {
 216     load_unsigned_short(reg, Address(rsi, bcp_offset));
 217   } else if (index_size == sizeof(u4)) {
 218     assert(EnableInvokeDynamic, "giant index used only for JSR 292");
 219     movl(reg, Address(rsi, bcp_offset));
 220     // Check if the secondary index definition is still ~x, otherwise
 221     // we have to change the following assembler code to calculate the
 222     // plain index.
 223     assert(constantPoolCacheOopDesc::decode_secondary_index(~123) == 123, "else change next line");
 224     notl(reg);  // convert to plain index
 225   } else if (index_size == sizeof(u1)) {
 226     assert(EnableInvokeDynamic, "tiny index used only for JSR 292");
 227     load_unsigned_byte(reg, Address(rsi, bcp_offset));
 228   } else {
 229     ShouldNotReachHere();
 230   }
 231 }
 232 
 233 
 234 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register index,
 235                                                            int bcp_offset, size_t index_size) {
 236   assert(cache != index, "must use different registers");
 237   get_cache_index_at_bcp(index, bcp_offset, index_size);
 238   movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize));
 239   assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below");
 240   shlptr(index, 2); // convert from field index to ConstantPoolCacheEntry index
 241 }
 242 
 243 
 244 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp,
 245                                                                int bcp_offset, size_t index_size) {
 246   assert(cache != tmp, "must use different register");