1 files changed, 112 insertions, 0 deletions
diff --git a/lib/Target/Mips/MicroMipsInstrFormats.td b/lib/Target/Mips/MicroMipsInstrFormats.td
new file mode 100644
index 0000000000000..665b4d2d8b417
--- /dev/null
+++ b/lib/Target/Mips/MicroMipsInstrFormats.td
@@ -0,0 +1,112 @@
+class MMArch {
+  string Arch = "micromips";
+  list<dag> Pattern = [];
+}
+
+class ADD_FM_MM<bits<6> op, bits<10> funct> : MMArch {
+  bits<5> rt;
+  bits<5> rs;
+  bits<5> rd;
+
+  bits<32> Inst;
+
+  let Inst{31-26} = op;
+  let Inst{25-21} = rt;
+  let Inst{20-16} = rs;
+  let Inst{15-11} = rd;
+  let Inst{10}    = 0;
+  let Inst{9-0}   = funct;
+}
+
+class ADDI_FM_MM<bits<6> op> : MMArch {
+  bits<5>  rs;
+  bits<5>  rt;
+  bits<16> imm16;
+
+  bits<32> Inst;
+
+  let Inst{31-26} = op;
+  let Inst{25-21} = rt;
+  let Inst{20-16} = rs;
+  let Inst{15-0}  = imm16;
+}
+
+class SLTI_FM_MM<bits<6> op> : MMArch {
+  bits<5> rt;
+  bits<5> rs;
+  bits<16> imm16;
+
+  bits<32> Inst;
+
+  let Inst{31-26} = op;
+  let Inst{25-21} = rs;
+  let Inst{20-16} = rt;
+  let Inst{15-0}  = imm16;
+}
+
+class LUI_FM_MM : MMArch {
+  bits<5> rt;
+  bits<16> imm16;
+
+  bits<32> Inst;
+
+  let Inst{31-26} = 0x10;
+  let Inst{25-21} = 0xd;
+  let Inst{20-16} = rt;
+  let Inst{15-0}  = imm16;
+}
+
+class MULT_FM_MM<bits<10> funct> : MMArch {
+  bits<5>  rs;
+  bits<5>  rt;
+
+  bits<32> Inst;
+
+  let Inst{31-26} = 0x00;
+  let Inst{25-21} = rt;
+  let Inst{20-16} = rs;
+  let Inst{15-6}  = funct;
+  let Inst{5-0}   = 0x3c;
+}
+
+class SRA_FM_MM<bits<10> funct, bit rotate> : MMArch {
+  bits<5> rd;
+  bits<5> rt;
+  bits<5> shamt;
+
+  bits<32> Inst;
+
+  let Inst{31-26} = 0;
+  let Inst{25-21} = rd;
+  let Inst{20-16} = rt;
+  let Inst{15-11} = shamt;
+  let Inst{10}    = rotate;
+  let Inst{9-0}   = funct;
+}
+
+class SRLV_FM_MM<bits<10> funct, bit rotate> : MMArch {
+  bits<5> rd;
+  bits<5> rt;
+  bits<5> rs;
+
+  bits<32> Inst;
+
+  let Inst{31-26} = 0;
+  let Inst{25-21} = rt;
+  let Inst{20-16} = rs;
+  let Inst{15-11} = rd;
+  let Inst{10}    = rotate;
+  let Inst{9-0}   = funct;
+}
+
+class LW_FM_MM<bits<6> op> : MMArch {
+  bits<5> rt;
+  bits<21> addr;
+
+  bits<32> Inst;
+
+  let Inst{31-26} = op;
+  let Inst{25-21} = rt;
+  let Inst{20-16} = addr{20-16};
+  let Inst{15-0}  = addr{15-0};
+}