201 L_no_such_interface,
202 /*return_method=*/false);
203
204 const ptrdiff_t typecheckSize = __ pc() - start_pc;
205 start_pc = __ pc();
206
207 // Get selected method from declaring class and itable index
208 const Register method = rbx;
209 __ load_klass(recv_klass_reg, j_rarg0, temp_reg); // restore recv_klass_reg
210 __ lookup_interface_method(// inputs: rec. class, interface, itable index
211 recv_klass_reg, holder_klass_reg, itable_index,
212 // outputs: method, scan temp. reg
213 method, temp_reg,
214 L_no_such_interface);
215
216 const ptrdiff_t lookupSize = __ pc() - start_pc;
217
218 // We expect we need index_dependent_slop extra bytes. Reason:
219 // The emitted code in lookup_interface_method changes when itable_index exceeds 15.
220 // For linux, a very narrow estimate would be 112, but Solaris requires some more space (130).
221 const ptrdiff_t estimate = 136;
222 const ptrdiff_t codesize = typecheckSize + lookupSize + index_dependent_slop;
223 slop_delta = (int)(estimate - codesize);
224 slop_bytes += slop_delta;
225 assert(slop_delta >= 0, "itable #%d: Code size estimate (%d) for lookup_interface_method too small, required: %d", itable_index, (int)estimate, (int)codesize);
226
227 // If we take a trap while this arg is on the stack we will not
228 // be able to walk the stack properly. This is not an issue except
229 // when there are mistakes in this assembly code that could generate
230 // a spurious fault. Ask me how I know...
231
232 // method (rbx): Method*
233 // j_rarg0: receiver
234
235 #ifdef ASSERT
236 if (DebugVtables) {
237 Label L2;
238 __ cmpptr(method, (int32_t)NULL_WORD);
239 __ jcc(Assembler::equal, L2);
240 __ cmpptr(Address(method, Method::from_compiled_offset()), (int32_t)NULL_WORD);
241 __ jcc(Assembler::notZero, L2);
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201 L_no_such_interface,
202 /*return_method=*/false);
203
204 const ptrdiff_t typecheckSize = __ pc() - start_pc;
205 start_pc = __ pc();
206
207 // Get selected method from declaring class and itable index
208 const Register method = rbx;
209 __ load_klass(recv_klass_reg, j_rarg0, temp_reg); // restore recv_klass_reg
210 __ lookup_interface_method(// inputs: rec. class, interface, itable index
211 recv_klass_reg, holder_klass_reg, itable_index,
212 // outputs: method, scan temp. reg
213 method, temp_reg,
214 L_no_such_interface);
215
216 const ptrdiff_t lookupSize = __ pc() - start_pc;
217
218 // We expect we need index_dependent_slop extra bytes. Reason:
219 // The emitted code in lookup_interface_method changes when itable_index exceeds 15.
220 // For linux, a very narrow estimate would be 112, but Solaris requires some more space (130).
221 const ptrdiff_t estimate = 226;
222 const ptrdiff_t codesize = typecheckSize + lookupSize + index_dependent_slop;
223 slop_delta = (int)(estimate - codesize);
224 slop_bytes += slop_delta;
225 assert(slop_delta >= 0, "itable #%d: Code size estimate (%d) for lookup_interface_method too small, required: %d", itable_index, (int)estimate, (int)codesize);
226
227 // If we take a trap while this arg is on the stack we will not
228 // be able to walk the stack properly. This is not an issue except
229 // when there are mistakes in this assembly code that could generate
230 // a spurious fault. Ask me how I know...
231
232 // method (rbx): Method*
233 // j_rarg0: receiver
234
235 #ifdef ASSERT
236 if (DebugVtables) {
237 Label L2;
238 __ cmpptr(method, (int32_t)NULL_WORD);
239 __ jcc(Assembler::equal, L2);
240 __ cmpptr(Address(method, Method::from_compiled_offset()), (int32_t)NULL_WORD);
241 __ jcc(Assembler::notZero, L2);
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