HIFIVE1-VP/riscv/gen_input/RV64A.core_desc

import "RV64IBase.core_desc"

InsructionSet RV64A extends RV64IBase {
     
    instructions{
        LR.D {
            encoding: b00010 | aq[0:0] | rl[0:0]  | b00000 | rs1[4:0] | b011 | rd[4:0] | b0101111;
            args_disass: "{name(rd)}, {name(rs1)}";
            if(rd!=0){
                val offs[XLEN] <= X[rs1];
                X[rd]<= sext(MEM[offs]{64}, XLEN);
                RES[offs]{64}<=sext(-1, 64);
            }        
        }
        SC.D {
            encoding: b00011 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b011 | rd[4:0] | b0101111;
            args_disass: "{name(rd)}, {name(rs1)}, {name(rs2)}";
            val offs[XLEN] <= X[rs1];
            val res[64] <= RES[offs];
            if(res!=0){
                MEM[offs]{64} <= X[rs2];
                if(rd!=0) X[rd]<=0;
            } else{ 
                if(rd!=0) X[rd]<= 1;
            }
        }
        AMOSWAP.D{
            encoding: b00001 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b011 | rd[4:0] | b0101111;
            args_disass: "{name(rd)}, {name(rs1)}, {name(rs2)} (aqu={aq},rel={rl})";
            val offs[XLEN] <= X[rs1];
            if(rd!=0) X[rd] <= sext(MEM[offs]{64});
            MEM[offs]{64} <= X[rs2];            
        }
        AMOADD.D{
            encoding: b00000 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b011 | rd[4:0] | b0101111;
            args_disass: "{name(rd)}, {name(rs1)}, {name(rs2)} (aqu={aq},rel={rl})";
            val offs[XLEN] <= X[rs1];
            val res[XLEN] <= sext(MEM[offs]{64});
            if(rd!=0) X[rd]<=res;
            val res2[XLEN] <= res + X[rs2];
            MEM[offs]{64}<=res2;            
        }
        AMOXOR.D{
            encoding: b00100 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b011 | rd[4:0] | b0101111;
            args_disass: "{name(rd)}, {name(rs1)}, {name(rs2)} (aqu={aq},rel={rl})";
            val offs[XLEN] <= X[rs1];
            val res[XLEN] <= sext(MEM[offs]{64});
            if(rd!=0) X[rd] <= res;
            val res2[XLEN] <= res ^ X[rs2];
            MEM[offs]{64} <= res2;            
        }
        AMOAND.D{
            encoding: b01100 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b011 | rd[4:0] | b0101111;
            args_disass: "{name(rd)}, {name(rs1)}, {name(rs2)} (aqu={aq},rel={rl})";
            val offs[XLEN] <= X[rs1];
            val res[XLEN] <= sext(MEM[offs]{64});
            if(rd!=0) X[rd] <= res;
            val res2[XLEN] <= res & X[rs2];
            MEM[offs]{64} <= res2;            
        }
        AMOOR.D {
            encoding: b01000 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b011 | rd[4:0] | b0101111;
            args_disass: "{name(rd)}, {name(rs1)}, {name(rs2)} (aqu={aq},rel={rl})";
            val offs[XLEN] <= X[rs1];
            val res[XLEN] <= sext(MEM[offs]{64});
            if(rd!=0) X[rd] <= res;
            val res2[XLEN] <= res | X[rs2];
            MEM[offs]{64} <= res2;            
        }
        AMOMIN.D{
            encoding: b10000 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b011 | rd[4:0] | b0101111;
            args_disass: "{name(rd)}, {name(rs1)}, {name(rs2)} (aqu={aq},rel={rl})";
            val offs[XLEN] <= X[rs1];
            val res1[XLEN] <= sext(MEM[offs]{64});
            if(rd!=0) X[rd] <= res1;
            val res2[XLEN] <= choose(res1's > X[rs2]s, X[rs2], res1);
            MEM[offs]{64} <= res2;
        }
        AMOMAX.D{
            encoding: b10100 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b011 | rd[4:0] | b0101111;
            args_disass: "{name(rd)}, {name(rs1)}, {name(rs2)} (aqu={aq},rel={rl})";
            val offs[XLEN] <= X[rs1];
            val res[XLEN] <= sext(MEM[offs]{64});
            if(rd!=0) X[rd] <= res;
            val res2[XLEN] <= choose(res s < X[rs2]s, X[rs2], res);            
            MEM[offs]{64} <= res2;            
        }
        AMOMINU.D{
            encoding: b11000 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b011 | rd[4:0] | b0101111;
            args_disass: "{name(rd)}, {name(rs1)}, {name(rs2)} (aqu={aq},rel={rl})";
            val offs[XLEN] <= X[rs1];
            val res[XLEN] <= sext(MEM[offs]{64});
            if(rd!=0) X[rd] <= res;
            val res2[XLEN] <= choose(res > X[rs2], X[rs2], res);            
            MEM[offs]{64} <= res2;            
        }
        AMOMAXU.D{
            encoding: b11100 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b011 | rd[4:0] | b0101111;
            args_disass: "{name(rd)}, {name(rs1)}, {name(rs2)} (aqu={aq},rel={rl})";
            val offs[XLEN] <= X[rs1];
            val res1[XLEN] <= sext(MEM[offs]{64});
            if(rd!=0) X[rd] <= res1;
            val res2[XLEN] <= choose(res1 < X[rs2], X[rs2], res1);
            MEM[offs]{64} <= res2;
        }
    }
}