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llvm-6502/lib/Target/Mips/MicroMipsInstrFormats.td
Akira Hatanaka f530aff9de [mips] First patch which adds support for micromips.
This patch adds support for recoded (meaning assembly-language compatible to
standard mips32) arithmetic 32-bit instructions.

Patch by Zoran Jovanovic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179873 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-19 19:03:11 +00:00

71 lines
1.1 KiB
TableGen

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;
}