HIFIVE1-VP/riscv/gen_input/RV32A.core_desc

import "RV32IBase.core_desc"

InsructionSet RV32A extends RV32IBase{
     
    address_spaces { 
        RES[8]
    }
    
    instructions{
        LR.W {
            encoding: b00010 | aq[0:0] | rl[0:0]  | b00000 | rs1[4:0] | b010 | rd[4:0] | b0101111;
            args_disass: "x%rd$d, x%rs1$d";
            if(rd!=0){
                val offs[XLEN] <= X[rs1];
                X[rd]<= sext(MEM[offs]{32}, XLEN);
                RES[offs]{32}<=sext(-1, 32);
            }
        }
        SC.W {
            encoding: b00011 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b010 | rd[4:0] | b0101111;
            args_disass: "x%rd$d, x%rs1$d, x%rs2$d";
            val offs[XLEN] <= X[rs1];
            val res1[32] <= RES[offs]{32};
            if(res1!=0)
                MEM[offs]{32} <= X[rs2];
            if(rd!=0) X[rd]<= choose(res1!=0, 0, 1);
        }
        AMOSWAP.W{
            encoding: b00001 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b010 | rd[4:0] | b0101111;
            args_disass: "x%rd$d, x%rs1$d, x%rs2$d (aqu=%aq$d,rel=%rl$d)";
            val offs[XLEN]<=X[rs1];
            if(rd!=0) X[rd]<=sext(MEM[offs]{32});
            MEM[offs]{32}<=X[rs2];
        }
        AMOADD.W{
            encoding: b00000 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b010 | rd[4:0] | b0101111;
            args_disass: "x%rd$d, x%rs1$d, x%rs2$d (aqu=%aq$d,rel=%rl$d)";
            val offs[XLEN]<=X[rs1];
            val res1[XLEN] <= sext(MEM[offs]{32});
            if(rd!=0) X[rd]<=res1;
            val res2[XLEN]<=res1 + X[rs2];
            MEM[offs]{32}<=res2;
        }
        AMOXOR.W{
            encoding: b00100 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b010 | rd[4:0] | b0101111;
            args_disass: "x%rd$d, x%rs1$d, x%rs2$d (aqu=%aq$d,rel=%rl$d)";
            val offs[XLEN]<=X[rs1];
            val res1[XLEN] <= sext(MEM[offs]{32});
            if(rd!=0) X[rd]<=res1;
            val res2[XLEN]<=res1 ^ X[rs2];
            MEM[offs]{32}<=res2;
        }
        AMOAND.W{
            encoding: b01100 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b010 | rd[4:0] | b0101111;
            args_disass: "x%rd$d, x%rs1$d, x%rs2$d (aqu=%aq$d,rel=%rl$d)";
            val offs[XLEN]<=X[rs1];
            val res1[XLEN] <= sext(MEM[offs]{32});
            if(rd!=0) X[rd]<=res1;
            val res2[XLEN] <=res1 & X[rs2];
            MEM[offs]{32}<=res2;
        }
        AMOOR.W {
            encoding: b01000 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b010 | rd[4:0] | b0101111;
            args_disass: "x%rd$d, x%rs1$d, x%rs2$d (aqu=%aq$d,rel=%rl$d)";
            val offs[XLEN]<=X[rs1];
            val res1[XLEN] <= sext(MEM[offs]{32});
            if(rd!=0) X[rd]<=res1;
            val res2[XLEN]<=res1 | X[rs2];
            MEM[offs]{32}<=res2;
        }
        AMOMIN.W{
            encoding: b10000 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b010 | rd[4:0] | b0101111;
            args_disass: "x%rd$d, x%rs1$d, x%rs2$d (aqu=%aq$d,rel=%rl$d)";
            val offs[XLEN]<=X[rs1];
            val res1[XLEN] <= sext(MEM[offs]{32});
            if(rd!=0) X[rd]<=res1;
            val res2[XLEN]<= choose(res1's>X[rs2]s, X[rs2], res1);
            MEM[offs]{32}<=res2;
        }
        AMOMAX.W{
            encoding: b10100 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b010 | rd[4:0] | b0101111;
            args_disass: "x%rd$d, x%rs1$d, x%rs2$d (aqu=%aq$d,rel=%rl$d)";
            val offs[XLEN]<=X[rs1];
            val res1[XLEN] <= sext(MEM[offs]{32});
            if(rd!=0) X[rd]<=res1;
            val res2[XLEN]<= choose(res1's<X[rs2]s, X[rs2], res1);
            MEM[offs]{32}<=res2;
        }
        AMOMINU.W{
            encoding: b11000 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b010 | rd[4:0] | b0101111;
            args_disass: "x%rd$d, x%rs1$d, x%rs2$d (aqu=%aq$d,rel=%rl$d)";
            val offs[XLEN]<=X[rs1];
            val res1[XLEN] <= zext(MEM[offs]{32});
            if(rd!=0) X[rd]<=res1;
            val res2[XLEN]<= choose(res1>X[rs2], X[rs2], res1);
            MEM[offs]{32}<=res2;
        }
        AMOMAXU.W{
            encoding: b11100 | aq[0:0] | rl[0:0] | rs2[4:0] | rs1[4:0] | b010 | rd[4:0] | b0101111;
            args_disass: "x%rd$d, x%rs1$d, x%rs2$d (aqu=%aq$d,rel=%rl$d)";
            val offs[XLEN]<=X[rs1];
            val res1[XLEN] <= zext(MEM[offs]{32});
            if(rd!=0) X[rd]<=res1;
            val res2[XLEN]<= choose(res1'u<X[rs2]'u, X[rs2], res1);
            MEM[offs]{32}<=res2;
        }
    }
}