2205 Register recv_2 = recv_klass->is_global() ? recv_klass : L0;
2206 Register intf_2 = intf_klass->is_global() ? intf_klass : L1;
2207 assert(method_result->is_global(), "must be able to return value");
2208 scan_temp = L2;
2209 sethi_temp = L3;
2210 save_frame_and_mov(0, recv_klass, recv_2, intf_klass, intf_2);
2211 recv_klass = recv_2;
2212 intf_klass = intf_2;
2213 did_save = true;
2214 }
2215
2216 // Compute start of first itableOffsetEntry (which is at the end of the vtable)
2217 int vtable_base = InstanceKlass::vtable_start_offset() * wordSize;
2218 int scan_step = itableOffsetEntry::size() * wordSize;
2219 int vte_size = vtableEntry::size() * wordSize;
2220
2221 lduw(recv_klass, InstanceKlass::vtable_length_offset() * wordSize, scan_temp);
2222 // %%% We should store the aligned, prescaled offset in the klassoop.
2223 // Then the next several instructions would fold away.
2224
2225 int round_to_unit = ((HeapWordsPerLong > 1) ? BytesPerLong : 0);
2226 int itb_offset = vtable_base;
2227 if (round_to_unit != 0) {
2228 // hoist first instruction of round_to(scan_temp, BytesPerLong):
2229 itb_offset += round_to_unit - wordSize;
2230 }
2231 int itb_scale = exact_log2(vtableEntry::size() * wordSize);
2232 sll(scan_temp, itb_scale, scan_temp);
2233 add(scan_temp, itb_offset, scan_temp);
2234 if (round_to_unit != 0) {
2235 // Round up to align_object_offset boundary
2236 // see code for InstanceKlass::start_of_itable!
2237 // Was: round_to(scan_temp, BytesPerLong);
2238 // Hoisted: add(scan_temp, BytesPerLong-1, scan_temp);
2239 and3(scan_temp, -round_to_unit, scan_temp);
2240 }
2241 add(recv_klass, scan_temp, scan_temp);
2242
2243 // Adjust recv_klass by scaled itable_index, so we can free itable_index.
2244 RegisterOrConstant itable_offset = itable_index;
2245 itable_offset = regcon_sll_ptr(itable_index, exact_log2(itableMethodEntry::size() * wordSize), itable_offset);
2246 itable_offset = regcon_inc_ptr(itable_offset, itableMethodEntry::method_offset_in_bytes(), itable_offset);
2247 add(recv_klass, ensure_simm13_or_reg(itable_offset, sethi_temp), recv_klass);
2248
2249 // for (scan = klass->itable(); scan->interface() != NULL; scan += scan_step) {
2250 // if (scan->interface() == intf) {
2251 // result = (klass + scan->offset() + itable_index);
2252 // }
2253 // }
2254 Label L_search, L_found_method;
2255
2256 for (int peel = 1; peel >= 0; peel--) {
2257 // %%%% Could load both offset and interface in one ldx, if they were
2258 // in the opposite order. This would save a load.
2259 ld_ptr(scan_temp, itableOffsetEntry::interface_offset_in_bytes(), method_result);
2260
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2205 Register recv_2 = recv_klass->is_global() ? recv_klass : L0;
2206 Register intf_2 = intf_klass->is_global() ? intf_klass : L1;
2207 assert(method_result->is_global(), "must be able to return value");
2208 scan_temp = L2;
2209 sethi_temp = L3;
2210 save_frame_and_mov(0, recv_klass, recv_2, intf_klass, intf_2);
2211 recv_klass = recv_2;
2212 intf_klass = intf_2;
2213 did_save = true;
2214 }
2215
2216 // Compute start of first itableOffsetEntry (which is at the end of the vtable)
2217 int vtable_base = InstanceKlass::vtable_start_offset() * wordSize;
2218 int scan_step = itableOffsetEntry::size() * wordSize;
2219 int vte_size = vtableEntry::size() * wordSize;
2220
2221 lduw(recv_klass, InstanceKlass::vtable_length_offset() * wordSize, scan_temp);
2222 // %%% We should store the aligned, prescaled offset in the klassoop.
2223 // Then the next several instructions would fold away.
2224
2225 int itb_offset = vtable_base;
2226 int itb_scale = exact_log2(vtableEntry::size() * wordSize);
2227 sll(scan_temp, itb_scale, scan_temp);
2228 add(scan_temp, itb_offset, scan_temp);
2229 add(recv_klass, scan_temp, scan_temp);
2230
2231 // Adjust recv_klass by scaled itable_index, so we can free itable_index.
2232 RegisterOrConstant itable_offset = itable_index;
2233 itable_offset = regcon_sll_ptr(itable_index, exact_log2(itableMethodEntry::size() * wordSize), itable_offset);
2234 itable_offset = regcon_inc_ptr(itable_offset, itableMethodEntry::method_offset_in_bytes(), itable_offset);
2235 add(recv_klass, ensure_simm13_or_reg(itable_offset, sethi_temp), recv_klass);
2236
2237 // for (scan = klass->itable(); scan->interface() != NULL; scan += scan_step) {
2238 // if (scan->interface() == intf) {
2239 // result = (klass + scan->offset() + itable_index);
2240 // }
2241 // }
2242 Label L_search, L_found_method;
2243
2244 for (int peel = 1; peel >= 0; peel--) {
2245 // %%%% Could load both offset and interface in one ldx, if they were
2246 // in the opposite order. This would save a load.
2247 ld_ptr(scan_temp, itableOffsetEntry::interface_offset_in_bytes(), method_result);
2248
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