1 files changed, 309 insertions, 0 deletions
diff --git a/lib/Target/Mips/MipsDSPInstrFormats.td b/lib/Target/Mips/MipsDSPInstrFormats.td
new file mode 100644
index 0000000..8e01d06
--- /dev/null
+++ b/lib/Target/Mips/MipsDSPInstrFormats.td
@@ -0,0 +1,309 @@
+//===- MipsDSPInstrFormats.td - Mips Instruction Formats ---*- tablegen -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+def HasDSP : Predicate<"Subtarget.hasDSP()">,
+             AssemblerPredicate<"FeatureDSP">;
+def HasDSPR2 : Predicate<"Subtarget.hasDSPR2()">,
+               AssemblerPredicate<"FeatureDSPR2">;
+
+// Fields.
+class Field6<bits<6> val> {
+  bits<6> V = val;
+}
+
+def SPECIAL3_OPCODE : Field6<0b011111>;
+def REGIMM_OPCODE : Field6<0b000001>;
+
+class DSPInst : MipsInst<(outs), (ins), "", [], NoItinerary, FrmOther> {
+  let Predicates = [HasDSP];
+}
+
+class PseudoDSP<dag outs, dag ins, list<dag> pattern>:
+  MipsPseudo<outs, ins, "", pattern> {
+  let Predicates = [HasDSP];
+}
+
+// ADDU.QB sub-class format.
+class ADDU_QB_FMT<bits<5> op> : DSPInst {
+  bits<5> rd;
+  bits<5> rs;
+  bits<5> rt;
+
+  let Opcode = SPECIAL3_OPCODE.V;
+
+  let Inst{25-21} = rs;
+  let Inst{20-16} = rt;
+  let Inst{15-11} = rd;
+  let Inst{10-6}  = op;
+  let Inst{5-0}   = 0b010000;
+}
+
+class RADDU_W_QB_FMT<bits<5> op> : DSPInst {
+  bits<5> rd;
+  bits<5> rs;
+
+  let Opcode = SPECIAL3_OPCODE.V;
+
+  let Inst{25-21} = rs;
+  let Inst{20-16} = 0;
+  let Inst{15-11} = rd;
+  let Inst{10-6}  = op;
+  let Inst{5-0}   = 0b010000;
+}
+
+// CMPU.EQ.QB sub-class format.
+class CMP_EQ_QB_R2_FMT<bits<5> op> : DSPInst {
+  bits<5> rs;
+  bits<5> rt;
+
+  let Opcode = SPECIAL3_OPCODE.V;
+
+  let Inst{25-21} = rs;
+  let Inst{20-16} = rt;
+  let Inst{15-11} = 0;
+  let Inst{10-6}  = op;
+  let Inst{5-0}   = 0b010001;
+}
+
+class CMP_EQ_QB_R3_FMT<bits<5> op> : DSPInst {
+  bits<5> rs;
+  bits<5> rt;
+  bits<5> rd;
+
+  let Opcode = SPECIAL3_OPCODE.V;
+
+  let Inst{25-21} = rs;
+  let Inst{20-16} = rt;
+  let Inst{15-11} = rd;
+  let Inst{10-6}  = op;
+  let Inst{5-0}   = 0b010001;
+}
+
+class PRECR_SRA_PH_W_FMT<bits<5> op> : DSPInst {
+  bits<5> rs;
+  bits<5> rt;
+  bits<5> sa;
+
+  let Opcode = SPECIAL3_OPCODE.V;
+
+  let Inst{25-21} = rs;
+  let Inst{20-16} = rt;
+  let Inst{15-11} = sa;
+  let Inst{10-6}  = op;
+  let Inst{5-0}   = 0b010001;
+}
+
+// ABSQ_S.PH sub-class format.
+class ABSQ_S_PH_R2_FMT<bits<5> op> : DSPInst {
+  bits<5> rd;
+  bits<5> rt;
+
+  let Opcode = SPECIAL3_OPCODE.V;
+
+  let Inst{25-21} = 0;
+  let Inst{20-16} = rt;
+  let Inst{15-11} = rd;
+  let Inst{10-6}  = op;
+  let Inst{5-0}   = 0b010010;
+}
+
+
+class REPL_FMT<bits<5> op> : DSPInst {
+  bits<5> rd;
+  bits<10> imm;
+
+  let Opcode = SPECIAL3_OPCODE.V;
+
+  let Inst{25-16} = imm;
+  let Inst{15-11} = rd;
+  let Inst{10-6}  = op;
+  let Inst{5-0}   = 0b010010;
+}
+
+// SHLL.QB sub-class format.
+class SHLL_QB_FMT<bits<5> op> : DSPInst {
+  bits<5> rd;
+  bits<5> rt;
+  bits<5> rs_sa;
+
+  let Opcode = SPECIAL3_OPCODE.V;
+
+  let Inst{25-21} = rs_sa;
+  let Inst{20-16} = rt;
+  let Inst{15-11} = rd;
+  let Inst{10-6}  = op;
+  let Inst{5-0}   = 0b010011;
+}
+
+// LX sub-class format.
+class LX_FMT<bits<5> op> : DSPInst {
+  bits<5> rd;
+  bits<5> base;
+  bits<5> index;
+
+  let Opcode = SPECIAL3_OPCODE.V;
+
+  let Inst{25-21} = base;
+  let Inst{20-16} = index;
+  let Inst{15-11} = rd;
+  let Inst{10-6}  = op;
+  let Inst{5-0} = 0b001010;
+}
+
+// ADDUH.QB sub-class format.
+class ADDUH_QB_FMT<bits<5> op> : DSPInst {
+  bits<5> rd;
+  bits<5> rs;
+  bits<5> rt;
+
+  let Opcode = SPECIAL3_OPCODE.V;
+
+  let Inst{25-21} = rs;
+  let Inst{20-16} = rt;
+  let Inst{15-11} = rd;
+  let Inst{10-6} = op;
+  let Inst{5-0} = 0b011000;
+}
+
+// APPEND sub-class format.
+class APPEND_FMT<bits<5> op> : DSPInst {
+  bits<5> rt;
+  bits<5> rs;
+  bits<5> sa;
+
+  let Opcode = SPECIAL3_OPCODE.V;
+
+  let Inst{25-21} = rs;
+  let Inst{20-16} = rt;
+  let Inst{15-11} = sa;
+  let Inst{10-6} = op;
+  let Inst{5-0} = 0b110001;
+}
+
+// DPA.W.PH sub-class format.
+class DPA_W_PH_FMT<bits<5> op> : DSPInst {
+  bits<2> ac;
+  bits<5> rs;
+  bits<5> rt;
+
+  let Opcode = SPECIAL3_OPCODE.V;
+
+  let Inst{25-21} = rs;
+  let Inst{20-16} = rt;
+  let Inst{15-13} = 0;
+  let Inst{12-11} = ac;
+  let Inst{10-6}  = op;
+  let Inst{5-0} = 0b110000;
+}
+
+// MULT sub-class format.
+class MULT_FMT<bits<6> opcode, bits<6> funct> : DSPInst {
+  bits<2> ac;
+  bits<5> rs;
+  bits<5> rt;
+
+  let Opcode = opcode;
+
+  let Inst{25-21} = rs;
+  let Inst{20-16} = rt;
+  let Inst{15-13} = 0;
+  let Inst{12-11} = ac;
+  let Inst{10-6}  = 0;
+  let Inst{5-0} = funct;
+}
+
+// EXTR.W sub-class format (type 1).
+class EXTR_W_TY1_FMT<bits<5> op> : DSPInst {
+  bits<5> rt;
+  bits<2> ac;
+  bits<5> shift_rs;
+
+  let Opcode = SPECIAL3_OPCODE.V;
+
+  let Inst{25-21} = shift_rs;
+  let Inst{20-16} = rt;
+  let Inst{15-13} = 0;
+  let Inst{12-11} = ac;
+  let Inst{10-6} = op;
+  let Inst{5-0} = 0b111000;
+}
+
+// SHILO sub-class format.
+class SHILO_R1_FMT<bits<5> op> : DSPInst {
+  bits<2> ac;
+  bits<6> shift;
+
+  let Opcode = SPECIAL3_OPCODE.V;
+
+  let Inst{25-20} = shift;
+  let Inst{19-13} = 0;
+  let Inst{12-11} = ac;
+  let Inst{10-6} = op;
+  let Inst{5-0} = 0b111000;
+}
+
+class SHILO_R2_FMT<bits<5> op> : DSPInst {
+  bits<2> ac;
+  bits<5> rs;
+
+  let Opcode = SPECIAL3_OPCODE.V;
+
+  let Inst{25-21} = rs;
+  let Inst{20-13} = 0;
+  let Inst{12-11} = ac;
+  let Inst{10-6} = op;
+  let Inst{5-0} = 0b111000;
+}
+
+class RDDSP_FMT<bits<5> op> : DSPInst {
+  bits<5> rd;
+  bits<10> mask;
+
+  let Opcode = SPECIAL3_OPCODE.V;
+
+  let Inst{25-16} = mask;
+  let Inst{15-11} = rd;
+  let Inst{10-6} = op;
+  let Inst{5-0} = 0b111000;
+}
+
+class WRDSP_FMT<bits<5> op> : DSPInst {
+  bits<5> rs;
+  bits<10> mask;
+
+  let Opcode = SPECIAL3_OPCODE.V;
+
+  let Inst{25-21} = rs;
+  let Inst{20-11} = mask;
+  let Inst{10-6} = op;
+  let Inst{5-0} = 0b111000;
+}
+
+class BPOSGE32_FMT<bits<5> op> : DSPInst {
+  bits<16> offset;
+
+  let Opcode = REGIMM_OPCODE.V;
+
+  let Inst{25-21} = 0;
+  let Inst{20-16} = op;
+  let Inst{15-0} = offset;
+}
+
+// INSV sub-class format.
+class INSV_FMT<bits<6> op> : DSPInst {
+  bits<5> rt;
+  bits<5> rs;
+
+  let Opcode = SPECIAL3_OPCODE.V;
+
+  let Inst{25-21} = rs;
+  let Inst{20-16} = rt;
+  let Inst{15-6} = 0;
+  let Inst{5-0} = op;
+}