S390: Implemente Multiply-Logical (ML) for simulator

src/s390/simulator-s390.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdarg.h>
 #include <stdlib.h>
 #include <cmath>
 
 #if V8_TARGET_ARCH_S390
 
@@ skipping 11434 matching lines @@
   DECODE_RXY_A_INSTRUCTION(r1, x2, b2, d2);
   int64_t b2_val = (b2 == 0) ? 0 : get_register(b2);
   int64_t x2_val = (x2 == 0) ? 0 : get_register(x2);
   intptr_t d2_val = d2;
   uint16_t mem_val = ReadHU(b2_val + d2_val + x2_val, instr);
   set_low_register(r1, mem_val);
   return length;
 }
 
 EVALUATE(ML) {
-  UNIMPLEMENTED();
-  USE(instr);
-  return 0;
+  DCHECK_OPCODE(ML);
+  DECODE_RXY_A_INSTRUCTION(r1, x2, b2, d2);
+  int64_t x2_val = (x2 == 0) ? 0 : get_register(x2);
+  int64_t b2_val = (b2 == 0) ? 0 : get_register(b2);
+  DCHECK(r1 % 2 == 0);
+  uint32_t mem_val = ReadWU(b2_val + x2_val + d2, instr);
+  uint32_t r1_val = get_low_register<uint32_t>(r1 + 1);
+  uint64_t product =
+      static_cast<uint64_t>(r1_val) * static_cast<uint64_t>(mem_val);
+  uint32_t high_bits = product >> 32;
+  r1_val = high_bits;
+  uint32_t low_bits = product & 0x00000000FFFFFFFF;
+  set_low_register(r1, high_bits);
+  set_low_register(r1 + 1, low_bits);
+  return length;
 }
 
 EVALUATE(DL) {
   UNIMPLEMENTED();
   USE(instr);
   return 0;
 }
 
 EVALUATE(ALC) {
   UNIMPLEMENTED();
@@ skipping 1154 matching lines @@
   return 0;
 }
 
 #undef EVALUATE
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // USE_SIMULATOR
 #endif  // V8_TARGET_ARCH_S390