//
class F2 : InstV9 { // Format 2 instructions
bits<3> op2;
- set op = 0; // Op = 0
+ set op = 0; // Op = 0
set Inst{24-22} = op2;
}
// Format 2.1 instructions
class F2_1<string name> : F2 {
bits<22> imm;
- bits<5> rd;
+ bits<5> rd;
- set Name = name;
+ set Name = name;
set Inst{29-25} = rd;
set Inst{21-0} = imm;
}
class F2_br : F2 { // Format 2 Branch instruction
- bit annul; // All branches have an annul bit
- set Inst{29} = annul;
set isBranch = 1; // All instances are branch instructions
}
class F2_2<bits<4> cond, string name> : F2_br { // Format 2.2 instructions
bits<22> disp;
+ bit annul;
set Name = name;
+ set Inst{29} = annul;
set Inst{28-25} = cond;
set Inst{21-0} = disp;
}
class F2_3<bits<4> cond, string name> : F2_br { // Format 2.3 instructions
- bits<2> cc;
+ bits<2> cc;
bits<19> disp;
- bit predict;
+ bit predict;
+ bit annul;
set Name = name;
+ set Inst{29} = annul;
set Inst{28-25} = cond;
set Inst{21-20} = cc;
set Inst{19} = predict;
}
class F2_4<bits<3> rcond, string name> : F2_br { // Format 2.4 instructions
- bit predict;
- bits<5> rs1;
- bits<16> disp;
+ bits<5> rs1;
+ bits<16> disp;
+ bit predict;
+ bit annul;
- set Name = name;
+ set Name = name;
+ set Inst{29} = annul;
set Inst{28} = 0;
set Inst{27-25} = rcond;
- // Inst{24-22} = op2 field
set Inst{21-20} = disp{15-14};
set Inst{19} = predict;
set Inst{18-14} = rs1;