Adjust bytecode operand values for big endian.

Operand values in Bytecodes.DecodeBytecodeAndOperands test are encoded
in little endian format. The test calls Bytecodes::Decode function which
reads the operands but the values are byte swapped on big endian
machines. Added big endian encoded data which decodes correctly on BE
machines.

BUG=

Review URL: https://codereview.chromium.org/1881423002

Cr-Commit-Position: refs/heads/master@{#35447}

test/unittests/interpreter/bytecodes-unittest.cc

@@ -187,37 +187,73 @@ TEST(Bytecodes, DecodeBytecodeAndOperands) {
 
 #define B(Name) static_cast<uint8_t>(Bytecode::k##Name)
   const BytecodesAndResult cases[] = {
-      {{B(LdaSmi), 0x01}, 2, 0, "            LdaSmi [1]"},
-      {{B(Wide), B(LdaSmi), 0xe8, 0x03}, 4, 0, "      LdaSmi.Wide [1000]"},
-      {{B(ExtraWide), B(LdaSmi), 0xa0, 0x86, 0x01, 0x00},
-       6,
-       0,
-       "LdaSmi.ExtraWide [100000]"},
-      {{B(LdaSmi), 0xff}, 2, 0, "            LdaSmi [-1]"},
-      {{B(Wide), B(LdaSmi), 0x18, 0xfc}, 4, 0, "      LdaSmi.Wide [-1000]"},
-      {{B(ExtraWide), B(LdaSmi), 0x60, 0x79, 0xfe, 0xff},
-       6,
-       0,
-       "LdaSmi.ExtraWide [-100000]"},
-      {{B(Star), 0xfb}, 2, 0, "            Star r5"},
-      {{B(Wide), B(Star), 0x78, 0xff}, 4, 0, "      Star.Wide r136"},
-      {{B(Wide), B(Call), 0x7a, 0xff, 0x79, 0xff, 0x02, 0x00, 0xb1, 0x00},
-       10,
-       0,
-       "Call.Wide r134, r135, #2, [177]"},
-      {{B(Ldar),
-        static_cast<uint8_t>(Register::FromParameterIndex(2, 3).ToOperand())},
-       2,
-       3,
-       "            Ldar a1"},
-      {{B(Wide), B(CreateObjectLiteral), 0x01, 0x02, 0x03, 0x04, 0xa5},
-       7,
-       0,
-       "CreateObjectLiteral.Wide [513], [1027], #165"},
-      {{B(ExtraWide), B(JumpIfNull), 0x15, 0xcd, 0x5b, 0x07},
-       6,
-       0,
-       "JumpIfNull.ExtraWide [123456789]"},
+#if V8_TARGET_LITTLE_ENDIAN
+    {{B(LdaSmi), 0x01}, 2, 0, "            LdaSmi [1]"},
+    {{B(Wide), B(LdaSmi), 0xe8, 0x03}, 4, 0, "      LdaSmi.Wide [1000]"},
+    {{B(ExtraWide), B(LdaSmi), 0xa0, 0x86, 0x01, 0x00},
+     6,
+     0,
+     "LdaSmi.ExtraWide [100000]"},
+    {{B(LdaSmi), 0xff}, 2, 0, "            LdaSmi [-1]"},
+    {{B(Wide), B(LdaSmi), 0x18, 0xfc}, 4, 0, "      LdaSmi.Wide [-1000]"},
+    {{B(ExtraWide), B(LdaSmi), 0x60, 0x79, 0xfe, 0xff},
+     6,
+     0,
+     "LdaSmi.ExtraWide [-100000]"},
+    {{B(Star), 0xfb}, 2, 0, "            Star r5"},
+    {{B(Wide), B(Star), 0x78, 0xff}, 4, 0, "      Star.Wide r136"},
+    {{B(Wide), B(Call), 0x7a, 0xff, 0x79, 0xff, 0x02, 0x00, 0xb1, 0x00},
+     10,
+     0,
+     "Call.Wide r134, r135, #2, [177]"},
+    {{B(Ldar),
+      static_cast<uint8_t>(Register::FromParameterIndex(2, 3).ToOperand())},
+     2,
+     3,
+     "            Ldar a1"},
+    {{B(Wide), B(CreateObjectLiteral), 0x01, 0x02, 0x03, 0x04, 0xa5},
+     7,
+     0,
+     "CreateObjectLiteral.Wide [513], [1027], #165"},
+    {{B(ExtraWide), B(JumpIfNull), 0x15, 0xcd, 0x5b, 0x07},
+     6,
+     0,
+     "JumpIfNull.ExtraWide [123456789]"},
+#elif V8_TARGET_BIG_ENDIAN
+    {{B(LdaSmi), 0x01}, 2, 0, "            LdaSmi [1]"},
+    {{B(Wide), B(LdaSmi), 0x03, 0xe8}, 4, 0, "      LdaSmi.Wide [1000]"},
+    {{B(ExtraWide), B(LdaSmi), 0x00, 0x01, 0x86, 0xa0},
+     6,
+     0,
+     "LdaSmi.ExtraWide [100000]"},
+    {{B(LdaSmi), 0xff}, 2, 0, "            LdaSmi [-1]"},
+    {{B(Wide), B(LdaSmi), 0xfc, 0x18}, 4, 0, "      LdaSmi.Wide [-1000]"},
+    {{B(ExtraWide), B(LdaSmi), 0xff, 0xfe, 0x79, 0x60},
+     6,
+     0,
+     "LdaSmi.ExtraWide [-100000]"},
+    {{B(Star), 0xfb}, 2, 0, "            Star r5"},
+    {{B(Wide), B(Star), 0xff, 0x78}, 4, 0, "      Star.Wide r136"},
+    {{B(Wide), B(Call), 0xff, 0x7a, 0xff, 0x79, 0x00, 0x02, 0x00, 0xb1},
+     10,
+     0,
+     "Call.Wide r134, r135, #2, [177]"},
+    {{B(Ldar),
+      static_cast<uint8_t>(Register::FromParameterIndex(2, 3).ToOperand())},
+     2,
+     3,
+     "            Ldar a1"},
+    {{B(Wide), B(CreateObjectLiteral), 0x02, 0x01, 0x04, 0x03, 0xa5},
+     7,
+     0,
+     "CreateObjectLiteral.Wide [513], [1027], #165"},
+    {{B(ExtraWide), B(JumpIfNull), 0x07, 0x5b, 0xcd, 0x15},
+     6,
+     0,
+     "JumpIfNull.ExtraWide [123456789]"},
+#else
+#error "Unknown Architecture"
+#endif
   };
 #undef B
 

test/unittests/unittests.status

@@ -11,6 +11,5 @@
   'WasmDecoderTest.AllLoadMemCombinations': [SKIP],
   'AstDecoderTest.AllLoadMemCombinations': [SKIP],
   'AstDecoderTest.AllStoreMemCombinations': [SKIP],
-  'Bytecodes.DecodeBytecodeAndOperands': [SKIP],
 }],  # 'byteorder == big'
 ]