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//===-- MSP430InstrFormats.td - MSP430 Instruction Formats -*- tablegen -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
// Describe MSP430 instructions format here
//
// Format specifies the encoding used by the instruction. This is part of the
// ad-hoc solution used to emit machine instruction encodings by our machine
// code emitter.
class Format<bits<2> val> {
bits<2> Value = val;
}
def PseudoFrm : Format<0>;
def SingleOpFrm : Format<1>;
def DoubleOpFrm : Format<2>;
def CondJumpFrm : Format<3>;
class SourceMode<bits<2> val> {
bits<2> Value = val;
}
def SrcReg : SourceMode<0>;
def SrcMem : SourceMode<1>;
def SrcIndReg : SourceMode<2>;
def SrcPostInc : SourceMode<3>;
def SrcImm : SourceMode<3>;
class DestMode<bit val> {
bit Value = val;
}
def DstReg : DestMode<0>;
def DstMem : DestMode<1>;
class SizeVal<bits<3> val> {
bits<3> Value = val;
}
def SizeUnknown : SizeVal<0>; // Unknown / unset size
def SizeSpecial : SizeVal<1>; // Special instruction, e.g. pseudo
def Size2Bytes : SizeVal<2>;
def Size4Bytes : SizeVal<3>;
def Size6Bytes : SizeVal<4>;
// Generic MSP430 Format
class MSP430Inst<dag outs, dag ins, SizeVal sz, Format f,
string asmstr> : Instruction {
field bits<16> Inst;
let Namespace = "MSP430";
dag OutOperandList = outs;
dag InOperandList = ins;
Format Form = f;
SizeVal Sz = sz;
// Define how we want to layout our TargetSpecific information field... This
// should be kept up-to-date with the fields in the MSP430InstrInfo.h file.
let TSFlags{1-0} = Form.Value;
let TSFlags{4-2} = Sz.Value;
let AsmString = asmstr;
}
// FIXME: Create different classes for different addressing modes.
// MSP430 Double Operand (Format I) Instructions
class IForm<bits<4> opcode, DestMode dest, bit bw, SourceMode src, SizeVal sz,
dag outs, dag ins, string asmstr, list<dag> pattern>
: MSP430Inst<outs, ins, sz, DoubleOpFrm, asmstr> {
let Pattern = pattern;
DestMode ad = dest;
SourceMode as = src;
let Inst{12-15} = opcode;
let Inst{7} = ad.Value;
let Inst{6} = bw;
let Inst{4-5} = as.Value;
}
// 8 bit IForm instructions
class IForm8<bits<4> opcode, DestMode dest, SourceMode src, SizeVal sz,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IForm<opcode, dest, 1, src, sz, outs, ins, asmstr, pattern>;
class I8rr<bits<4> opcode,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IForm8<opcode, DstReg, SrcReg, Size2Bytes, outs, ins, asmstr, pattern>;
class I8ri<bits<4> opcode,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IForm8<opcode, DstReg, SrcImm, Size4Bytes, outs, ins, asmstr, pattern>;
class I8rm<bits<4> opcode,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IForm8<opcode, DstReg, SrcMem, Size4Bytes, outs, ins, asmstr, pattern>;
class I8mr<bits<4> opcode,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IForm8<opcode, DstMem, SrcReg, Size4Bytes, outs, ins, asmstr, pattern>;
class I8mi<bits<4> opcode,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IForm8<opcode, DstMem, SrcImm, Size6Bytes, outs, ins, asmstr, pattern>;
class I8mm<bits<4> opcode,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IForm8<opcode, DstMem, SrcMem, Size6Bytes, outs, ins, asmstr, pattern>;
// 16 bit IForm instructions
class IForm16<bits<4> opcode, DestMode dest, SourceMode src, SizeVal sz,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IForm<opcode, dest, 0, src, sz, outs, ins, asmstr, pattern>;
class I16rr<bits<4> opcode,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IForm16<opcode, DstReg, SrcReg, Size2Bytes, outs, ins, asmstr, pattern>;
class I16ri<bits<4> opcode,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IForm16<opcode, DstReg, SrcImm, Size4Bytes, outs, ins, asmstr, pattern>;
class I16rm<bits<4> opcode,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IForm16<opcode, DstReg, SrcMem, Size4Bytes, outs, ins, asmstr, pattern>;
class I16mr<bits<4> opcode,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IForm16<opcode, DstMem, SrcReg, Size4Bytes, outs, ins, asmstr, pattern>;
class I16mi<bits<4> opcode,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IForm16<opcode, DstMem, SrcImm, Size6Bytes, outs, ins, asmstr, pattern>;
class I16mm<bits<4> opcode,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IForm16<opcode, DstMem, SrcMem, Size6Bytes, outs, ins, asmstr, pattern>;
// MSP430 Single Operand (Format II) Instructions
class IIForm<bits<9> opcode, bit bw, SourceMode src, SizeVal sz,
dag outs, dag ins, string asmstr, list<dag> pattern>
: MSP430Inst<outs, ins, sz, SingleOpFrm, asmstr> {
let Pattern = pattern;
SourceMode as = src;
let Inst{7-15} = opcode;
let Inst{6} = bw;
let Inst{4-5} = as.Value;
}
// 8 bit IIForm instructions
class IIForm8<bits<9> opcode, SourceMode src, SizeVal sz,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IIForm<opcode, 1, src, sz, outs, ins, asmstr, pattern>;
class II8r<bits<9> opcode,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IIForm8<opcode, SrcReg, Size2Bytes, outs, ins, asmstr, pattern>;
class II8m<bits<9> opcode,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IIForm8<opcode, SrcMem, Size4Bytes, outs, ins, asmstr, pattern>;
class II8i<bits<9> opcode,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IIForm8<opcode, SrcImm, Size4Bytes, outs, ins, asmstr, pattern>;
// 16 bit IIForm instructions
class IIForm16<bits<9> opcode, SourceMode src, SizeVal sz,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IIForm<opcode, 0, src, sz, outs, ins, asmstr, pattern>;
class II16r<bits<9> opcode,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IIForm16<opcode, SrcReg, Size2Bytes, outs, ins, asmstr, pattern>;
class II16m<bits<9> opcode,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IIForm16<opcode, SrcMem, Size4Bytes, outs, ins, asmstr, pattern>;
class II16i<bits<9> opcode,
dag outs, dag ins, string asmstr, list<dag> pattern>
: IIForm16<opcode, SrcImm, Size4Bytes, outs, ins, asmstr, pattern>;
// MSP430 Conditional Jumps Instructions
class CJForm<bits<3> opcode, bits<3> cond,
dag outs, dag ins, string asmstr, list<dag> pattern>
: MSP430Inst<outs, ins, Size2Bytes, CondJumpFrm, asmstr> {
let Pattern = pattern;
let Inst{13-15} = opcode;
let Inst{10-12} = cond;
}
// Pseudo instructions
class Pseudo<dag outs, dag ins, string asmstr, list<dag> pattern>
: MSP430Inst<outs, ins, SizeSpecial, PseudoFrm, asmstr> {
let Pattern = pattern;
let Inst{15-0} = 0;
}
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