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68 lines
1.8 KiB
TableGen
68 lines
1.8 KiB
TableGen
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//===- MSP430InstrFormats.td - MSP430 Instruction Formats-----*- tblgen -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// Describe MSP430 instructions format here
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//
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// Generic MSP430 Format
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class MSP430Inst<dag outs, dag ins, string asmstr> : Instruction {
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field bits<16> Inst;
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let Namespace = "MSP430";
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dag OutOperandList = outs;
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dag InOperandList = ins;
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let AsmString = asmstr;
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}
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// FIXME: Create different classes for different addressing modes.
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// MSP430 Double Operand (Format I) Instructions
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class IForm<bits<4> opcode, bit ad, bit bw, bits<2> as,
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dag outs, dag ins, string asmstr, list<dag> pattern>
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: MSP430Inst<outs, ins, asmstr> {
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let Pattern = pattern;
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let Inst{12-15} = opcode;
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let Inst{7} = ad;
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let Inst{6} = bw;
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let Inst{4-5} = as;
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}
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// MSP430 Single Operand (Format II) Instructions
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class IIForm<bits<9> opcode, bit bw, bits<2> ad,
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dag outs, dag ins, string asmstr, list<dag> pattern>
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: MSP430Inst<outs, ins, asmstr> {
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let Pattern = pattern;
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let Inst{7-15} = opcode;
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let Inst{6} = bw;
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let Inst{4-5} = ad;
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}
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// MSP430 Conditional Jumps Instructions
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class CJForm<bits<3> opcode, bits<3> cond, bit s,
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dag outs, dag ins, string asmstr, list<dag> pattern>
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: MSP430Inst<outs, ins, asmstr> {
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let Pattern = pattern;
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let Inst{13-15} = opcode;
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let Inst{10-12} = cond;
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let Inst{9} = s;
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}
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// Pseudo instructions
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class Pseudo<dag outs, dag ins, string asmstr, list<dag> pattern>
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: MSP430Inst<outs, ins, asmstr> {
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let Pattern = pattern;
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let Inst{15-0} = 0;
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}
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