Version 3.6.5

src/ia32/disasm-ia32.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 37 matching lines @@
 // Tables
 //------------------------------------------------------------------
 struct ByteMnemonic {
   int b;  // -1 terminates, otherwise must be in range (0..255)
   const char* mnem;
   OperandOrder op_order_;
 };
 
 
 static const ByteMnemonic two_operands_instr[] = {
+  {0x01, "add", OPER_REG_OP_ORDER},
   {0x03, "add", REG_OPER_OP_ORDER},
   {0x09, "or", OPER_REG_OP_ORDER},
   {0x0B, "or", REG_OPER_OP_ORDER},
   {0x1B, "sbb", REG_OPER_OP_ORDER},
   {0x21, "and", OPER_REG_OP_ORDER},
   {0x23, "and", REG_OPER_OP_ORDER},
   {0x29, "sub", OPER_REG_OP_ORDER},
   {0x2A, "subb", REG_OPER_OP_ORDER},
   {0x2B, "sub", REG_OPER_OP_ORDER},
   {0x31, "xor", OPER_REG_OP_ORDER},
@@ skipping 42 matching lines @@
   {0x0D, "or", UNSET_OP_ORDER},
   {0x15, "adc", UNSET_OP_ORDER},
   {0x25, "and", UNSET_OP_ORDER},
   {0x2D, "sub", UNSET_OP_ORDER},
   {0x35, "xor", UNSET_OP_ORDER},
   {0x3D, "cmp", UNSET_OP_ORDER},
   {-1, "", UNSET_OP_ORDER}
 };
 
 
+// Generally we don't want to generate these because they are subject to partial
+// register stalls.  They are included for completeness and because the cmp
+// variant is used by the RecordWrite stub.  Because it does not update the
+// register it is not subject to partial register stalls.
+static ByteMnemonic byte_immediate_instr[] = {
+  {0x0c, "or", UNSET_OP_ORDER},
+  {0x24, "and", UNSET_OP_ORDER},
+  {0x34, "xor", UNSET_OP_ORDER},
+  {0x3c, "cmp", UNSET_OP_ORDER},
+  {-1, "", UNSET_OP_ORDER}
+};
+
+
 static const char* const jump_conditional_mnem[] = {
   /*0*/ "jo", "jno", "jc", "jnc",
   /*4*/ "jz", "jnz", "jna", "ja",
   /*8*/ "js", "jns", "jpe", "jpo",
   /*12*/ "jl", "jnl", "jng", "jg"
 };
 
 
 static const char* const set_conditional_mnem[] = {
   /*0*/ "seto", "setno", "setc", "setnc",
@@ skipping 12 matching lines @@
 
 
 enum InstructionType {
   NO_INSTR,
   ZERO_OPERANDS_INSTR,
   TWO_OPERANDS_INSTR,
   JUMP_CONDITIONAL_SHORT_INSTR,
   REGISTER_INSTR,
   MOVE_REG_INSTR,
   CALL_JUMP_INSTR,
-  SHORT_IMMEDIATE_INSTR
+  SHORT_IMMEDIATE_INSTR,
+  BYTE_IMMEDIATE_INSTR
 };
 
 
 struct InstructionDesc {
   const char* mnem;
   InstructionType type;
   OperandOrder op_order_;
 };
 
 
@@ skipping 28 matching lines @@
     instructions_[i].op_order_ = UNSET_OP_ORDER;
   }
 }
 
 
 void InstructionTable::Init() {
   CopyTable(two_operands_instr, TWO_OPERANDS_INSTR);
   CopyTable(zero_operands_instr, ZERO_OPERANDS_INSTR);
   CopyTable(call_jump_instr, CALL_JUMP_INSTR);
   CopyTable(short_immediate_instr, SHORT_IMMEDIATE_INSTR);
+  CopyTable(byte_immediate_instr, BYTE_IMMEDIATE_INSTR);
   AddJumpConditionalShort();
   SetTableRange(REGISTER_INSTR, 0x40, 0x47, "inc");
   SetTableRange(REGISTER_INSTR, 0x48, 0x4F, "dec");
   SetTableRange(REGISTER_INSTR, 0x50, 0x57, "push");
   SetTableRange(REGISTER_INSTR, 0x58, 0x5F, "pop");
   SetTableRange(REGISTER_INSTR, 0x91, 0x97, "xchg eax,");  // 0x90 is nop.
   SetTableRange(MOVE_REG_INSTR, 0xB8, 0xBF, "mov");
 }
 
 
@@ skipping 694 matching lines @@
       break;
     }
 
     case SHORT_IMMEDIATE_INSTR: {
       byte* addr = reinterpret_cast<byte*>(*reinterpret_cast<int32_t*>(data+1));
       AppendToBuffer("%s eax, %s", idesc.mnem, NameOfAddress(addr));
       data += 5;
       break;
     }
 
+    case BYTE_IMMEDIATE_INSTR: {
+      AppendToBuffer("%s al, 0x%x", idesc.mnem, data[1]);
+      data += 2;
+      break;
+    }
+
     case NO_INSTR:
       processed = false;
       break;
 
     default:
       UNIMPLEMENTED();  // This type is not implemented.
   }
   //----------------------------
   if (!processed) {
     switch (*data) {
@@ skipping 414 matching lines @@
       case 0x6A:
         AppendToBuffer("push 0x%x", *reinterpret_cast<int8_t*>(data + 1));
         data += 2;
         break;
 
       case 0xA8:
         AppendToBuffer("test al,0x%x", *reinterpret_cast<uint8_t*>(data+1));
         data += 2;
         break;
 
-      case 0x2C:
-        AppendToBuffer("subb eax,0x%x", *reinterpret_cast<uint8_t*>(data+1));
-        data += 2;
-        break;
-
       case 0xA9:
         AppendToBuffer("test eax,0x%x", *reinterpret_cast<int32_t*>(data+1));
         data += 5;
         break;
 
       case 0xD1:  // fall through
       case 0xD3:  // fall through
       case 0xC1:
         data += D1D3C1Instruction(data);
         break;
@@ skipping 266 matching lines @@
       fprintf(f, "  ");
     }
     fprintf(f, "  %s\n", buffer.start());
   }
 }
 
 
 }  // namespace disasm
 
 #endif  // V8_TARGET_ARCH_IA32