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X86RecognizableInstr.cpp 42.2 KiB
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  } // switch (Prefix)

  assert(opcodeType != (OpcodeType)-1 &&
         "Opcode type not set");
  assert(filter && "Filter not set");

  if (Form == X86Local::AddRegFrm) {
    if(Spec->modifierType != MODIFIER_MODRM) {
      assert(opcodeToSet < 0xf9 &&
             "Not enough room for all ADDREG_FRM operands");
    
      uint8_t currentOpcode;

      for (currentOpcode = opcodeToSet;
           currentOpcode < opcodeToSet + 8;
           ++currentOpcode)
        tables.setTableFields(opcodeType, 
                              insnContext(), 
                              currentOpcode, 
                              *filter, 
    
      Spec->modifierType = MODIFIER_OPCODE;
      Spec->modifierBase = opcodeToSet;
    } else {
      // modifierBase was set where MODIFIER_MODRM was set
      tables.setTableFields(opcodeType, 
                            insnContext(), 
                            opcodeToSet, 
                            *filter, 
    }
  } else {
    tables.setTableFields(opcodeType,
                          insnContext(),
                          opcodeToSet,
                          *filter,
    
    Spec->modifierType = MODIFIER_NONE;
    Spec->modifierBase = opcodeToSet;
  }
  
  delete filter;
}

#define TYPE(str, type) if (s == str) return type;
OperandType RecognizableInstr::typeFromString(const std::string &s,
                                              bool isSSE,
                                              bool hasREX_WPrefix,
                                              bool hasOpSizePrefix) {
  if (isSSE) {
    // For SSE instructions, we ignore the OpSize prefix and force operand 
    // sizes.
    TYPE("GR16",              TYPE_R16)
    TYPE("GR32",              TYPE_R32)
    TYPE("GR64",              TYPE_R64)
  }
  if(hasREX_WPrefix) {
    // For instructions with a REX_W prefix, a declared 32-bit register encoding
    // is special.
    TYPE("GR32",              TYPE_R32)
  }
  if(!hasOpSizePrefix) {
    // For instructions without an OpSize prefix, a declared 16-bit register or
    // immediate encoding is special.
    TYPE("GR16",              TYPE_R16)
    TYPE("i16imm",            TYPE_IMM16)
  }
  TYPE("i16mem",              TYPE_Mv)
  TYPE("i16imm",              TYPE_IMMv)
  TYPE("i16i8imm",            TYPE_IMMv)
  TYPE("GR16",                TYPE_Rv)
  TYPE("i32mem",              TYPE_Mv)
  TYPE("i32imm",              TYPE_IMMv)
  TYPE("i32i8imm",            TYPE_IMM32)
  TYPE("GR32",                TYPE_Rv)
  TYPE("i64mem",              TYPE_Mv)
  TYPE("i64i32imm",           TYPE_IMM64)
  TYPE("i64i8imm",            TYPE_IMM64)
  TYPE("GR64",                TYPE_R64)
  TYPE("i8mem",               TYPE_M8)
  TYPE("i8imm",               TYPE_IMM8)
  TYPE("GR8",                 TYPE_R8)
  TYPE("VR128",               TYPE_XMM128)
  TYPE("f128mem",             TYPE_M128)
  TYPE("FR64",                TYPE_XMM64)
  TYPE("f64mem",              TYPE_M64FP)
  TYPE("FR32",                TYPE_XMM32)
  TYPE("f32mem",              TYPE_M32FP)
  TYPE("RST",                 TYPE_ST)
  TYPE("i128mem",             TYPE_M128)
  TYPE("i256mem",             TYPE_M256)
  TYPE("i16imm_pcrel",        TYPE_REL16)
  TYPE("brtarget8",           TYPE_REL8)
  TYPE("f80mem",              TYPE_M80FP)
  TYPE("lea32mem",            TYPE_LEA)
  TYPE("lea64_32mem",         TYPE_LEA)
  TYPE("lea64mem",            TYPE_LEA)
  TYPE("VR64",                TYPE_MM64)
  TYPE("i64imm",              TYPE_IMMv)
  TYPE("opaque32mem",         TYPE_M1616)
  TYPE("opaque48mem",         TYPE_M1632)
  TYPE("opaque80mem",         TYPE_M1664)
  TYPE("opaque512mem",        TYPE_M512)
  TYPE("SEGMENT_REG",         TYPE_SEGMENTREG)
  TYPE("DEBUG_REG",           TYPE_DEBUGREG)
  TYPE("CONTROL_REG",         TYPE_CONTROLREG)
  TYPE("offset8",             TYPE_MOFFS8)
  TYPE("offset16",            TYPE_MOFFS16)
  TYPE("offset32",            TYPE_MOFFS32)
  TYPE("offset64",            TYPE_MOFFS64)
  TYPE("VR256",               TYPE_XMM256)
  TYPE("GR16_NOAX",           TYPE_Rv)
  TYPE("GR32_NOAX",           TYPE_Rv)
  TYPE("GR64_NOAX",           TYPE_R64)
  errs() << "Unhandled type string " << s << "\n";
  llvm_unreachable("Unhandled type string");
}
#undef TYPE

#define ENCODING(str, encoding) if (s == str) return encoding;
OperandEncoding RecognizableInstr::immediateEncodingFromString
  (const std::string &s,
   bool hasOpSizePrefix) {
  if(!hasOpSizePrefix) {
    // For instructions without an OpSize prefix, a declared 16-bit register or
    // immediate encoding is special.
    ENCODING("i16imm",        ENCODING_IW)
  }
  ENCODING("i32i8imm",        ENCODING_IB)
  ENCODING("SSECC",           ENCODING_IB)
  ENCODING("i16imm",          ENCODING_Iv)
  ENCODING("i16i8imm",        ENCODING_IB)
  ENCODING("i32imm",          ENCODING_Iv)
  ENCODING("i64i32imm",       ENCODING_ID)
  ENCODING("i64i8imm",        ENCODING_IB)
  ENCODING("i8imm",           ENCODING_IB)
  // This is not a typo.  Instructions like BLENDVPD put
  // register IDs in 8-bit immediates nowadays.
  ENCODING("VR256",           ENCODING_IB)
  ENCODING("VR128",           ENCODING_IB)
  errs() << "Unhandled immediate encoding " << s << "\n";
  llvm_unreachable("Unhandled immediate encoding");
}

OperandEncoding RecognizableInstr::rmRegisterEncodingFromString
  (const std::string &s,
   bool hasOpSizePrefix) {
  ENCODING("GR16",            ENCODING_RM)
  ENCODING("GR32",            ENCODING_RM)
  ENCODING("GR64",            ENCODING_RM)
  ENCODING("GR8",             ENCODING_RM)
  ENCODING("VR128",           ENCODING_RM)
  ENCODING("FR64",            ENCODING_RM)
  ENCODING("FR32",            ENCODING_RM)
  ENCODING("VR64",            ENCODING_RM)
  ENCODING("VR256",           ENCODING_RM)
  errs() << "Unhandled R/M register encoding " << s << "\n";
  llvm_unreachable("Unhandled R/M register encoding");
}

OperandEncoding RecognizableInstr::roRegisterEncodingFromString
  (const std::string &s,
   bool hasOpSizePrefix) {
  ENCODING("GR16",            ENCODING_REG)
  ENCODING("GR32",            ENCODING_REG)
  ENCODING("GR64",            ENCODING_REG)
  ENCODING("GR8",             ENCODING_REG)
  ENCODING("VR128",           ENCODING_REG)
  ENCODING("FR64",            ENCODING_REG)
  ENCODING("FR32",            ENCODING_REG)
  ENCODING("VR64",            ENCODING_REG)
  ENCODING("SEGMENT_REG",     ENCODING_REG)
  ENCODING("DEBUG_REG",       ENCODING_REG)
  ENCODING("CONTROL_REG",     ENCODING_REG)
  ENCODING("VR256",           ENCODING_REG)
  errs() << "Unhandled reg/opcode register encoding " << s << "\n";
  llvm_unreachable("Unhandled reg/opcode register encoding");
}

OperandEncoding RecognizableInstr::vvvvRegisterEncodingFromString
  (const std::string &s,
   bool hasOpSizePrefix) {
  ENCODING("GR32",            ENCODING_VVVV)
  ENCODING("GR64",            ENCODING_VVVV)
  ENCODING("FR32",            ENCODING_VVVV)
  ENCODING("FR64",            ENCODING_VVVV)
  ENCODING("VR128",           ENCODING_VVVV)
  ENCODING("VR256",           ENCODING_VVVV)
  errs() << "Unhandled VEX.vvvv register encoding " << s << "\n";
  llvm_unreachable("Unhandled VEX.vvvv register encoding");
}

OperandEncoding RecognizableInstr::memoryEncodingFromString
  (const std::string &s,
   bool hasOpSizePrefix) {
  ENCODING("i16mem",          ENCODING_RM)
  ENCODING("i32mem",          ENCODING_RM)
  ENCODING("i64mem",          ENCODING_RM)
  ENCODING("i8mem",           ENCODING_RM)
  ENCODING("ssmem",           ENCODING_RM)
  ENCODING("sdmem",           ENCODING_RM)
  ENCODING("f64mem",          ENCODING_RM)
  ENCODING("f32mem",          ENCODING_RM)
  ENCODING("i128mem",         ENCODING_RM)
  ENCODING("i256mem",         ENCODING_RM)
  ENCODING("f80mem",          ENCODING_RM)
  ENCODING("lea32mem",        ENCODING_RM)
  ENCODING("lea64_32mem",     ENCODING_RM)
  ENCODING("lea64mem",        ENCODING_RM)
  ENCODING("opaque32mem",     ENCODING_RM)
  ENCODING("opaque48mem",     ENCODING_RM)
  ENCODING("opaque80mem",     ENCODING_RM)
  ENCODING("opaque512mem",    ENCODING_RM)
  errs() << "Unhandled memory encoding " << s << "\n";
  llvm_unreachable("Unhandled memory encoding");
}

OperandEncoding RecognizableInstr::relocationEncodingFromString
  (const std::string &s,
   bool hasOpSizePrefix) {
  if(!hasOpSizePrefix) {
    // For instructions without an OpSize prefix, a declared 16-bit register or
    // immediate encoding is special.
    ENCODING("i16imm",        ENCODING_IW)
  }
  ENCODING("i16imm",          ENCODING_Iv)
  ENCODING("i16i8imm",        ENCODING_IB)
  ENCODING("i32imm",          ENCODING_Iv)
  ENCODING("i32i8imm",        ENCODING_IB)
  ENCODING("i64i32imm",       ENCODING_ID)
  ENCODING("i64i8imm",        ENCODING_IB)
  ENCODING("i8imm",           ENCODING_IB)
  ENCODING("i64i32imm_pcrel", ENCODING_ID)
  ENCODING("i16imm_pcrel",    ENCODING_IW)
  ENCODING("i32imm_pcrel",    ENCODING_ID)
  ENCODING("brtarget",        ENCODING_Iv)
  ENCODING("brtarget8",       ENCODING_IB)
  ENCODING("i64imm",          ENCODING_IO)
  ENCODING("offset8",         ENCODING_Ia)
  ENCODING("offset16",        ENCODING_Ia)
  ENCODING("offset32",        ENCODING_Ia)
  ENCODING("offset64",        ENCODING_Ia)
  errs() << "Unhandled relocation encoding " << s << "\n";
  llvm_unreachable("Unhandled relocation encoding");
}

OperandEncoding RecognizableInstr::opcodeModifierEncodingFromString
  (const std::string &s,
   bool hasOpSizePrefix) {
  ENCODING("RST",             ENCODING_I)
  ENCODING("GR32",            ENCODING_Rv)
  ENCODING("GR64",            ENCODING_RO)
  ENCODING("GR16",            ENCODING_Rv)
  ENCODING("GR8",             ENCODING_RB)
  ENCODING("GR16_NOAX",       ENCODING_Rv)
  ENCODING("GR32_NOAX",       ENCODING_Rv)
  ENCODING("GR64_NOAX",       ENCODING_RO)
  errs() << "Unhandled opcode modifier encoding " << s << "\n";
  llvm_unreachable("Unhandled opcode modifier encoding");
}
#undef ENCODING