VP/HIFIVE1-VP
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Restructured project

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Esse commit está contido em:
Eyck Jentzsch
2017-09-21 20:29:23 +02:00
pai aa8c2138c6
commit 9a617dab57
55 arquivos alterados com 16145 adições e 166 exclusões
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riscv/gen_input/RV32M.core_desc Arquivo normal
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@ -0,0 +1,81 @@
import "RV32IBase.core_desc"
InsructionSet RV32M extends RV32IBase {
constants {
XLEN2
}
instructions{
MUL{
encoding: b0000001 | rs2[4:0] | rs1[4:0] | b000 | rd[4:0] | b0110011;
args_disass:"x%rd$d, x%rs1$d, x%rs2$d";
if(rd != 0){
val res[XLEN2] <= zext(X[rs1], XLEN2) * zext(X[rs2], XLEN2);
X[rd]<= zext(res , XLEN);
}
}
MULH {
encoding: b0000001 | rs2[4:0] | rs1[4:0] | b001 | rd[4:0] | b0110011;
args_disass:"x%rd$d, x%rs1$d, x%rs2$d";
if(rd != 0){
val res[XLEN2] <= sext(X[rs1], XLEN2) * sext(X[rs2], XLEN2);
X[rd]<= zext(res >> XLEN, XLEN);
}
}
MULHSU {
encoding: b0000001 | rs2[4:0] | rs1[4:0] | b010 | rd[4:0] | b0110011;
args_disass:"x%rd$d, x%rs1$d, x%rs2$d";
if(rd != 0){
val res[XLEN2] <= sext(X[rs1], XLEN2) * zext(X[rs2], XLEN2);
X[rd]<= zext(res >> XLEN, XLEN);
}
}
MULHU {
encoding: b0000001 | rs2[4:0] | rs1[4:0] | b011 | rd[4:0] | b0110011;
args_disass:"x%rd$d, x%rs1$d, x%rs2$d";
if(rd != 0){
val res[XLEN2] <= zext(X[rs1], XLEN2) * zext(X[rs2], XLEN2);
X[rd]<= zext(res >> XLEN, XLEN);
}
}
DIV {
encoding: b0000001 | rs2[4:0] | rs1[4:0] | b100 | rd[4:0] | b0110011;
args_disass:"x%rd$d, x%rs1$d, x%rs2$d";
if(rd != 0){
if(X[rs2]!=0)
X[rd] <= sext(X[rs1], 32) / sext(X[rs2], 32);
else
X[rd] <= -1;
}
}
DIVU {
encoding: b0000001 | rs2[4:0] | rs1[4:0] | b101 | rd[4:0] | b0110011;
args_disass:"x%rd$d, x%rs1$d, x%rs2$d";
if(rd != 0){
if(X[rs2]!=0)
X[rd] <= zext(X[rs1], 32) / zext(X[rs2], 32);
else
X[rd] <= -1;
}
}
REM {
encoding: b0000001 | rs2[4:0] | rs1[4:0] | b110 | rd[4:0] | b0110011;
args_disass:"x%rd$d, x%rs1$d, x%rs2$d";
if(rd != 0){
if(X[rs2]!=0)
X[rd] <= sext(X[rs1], 32) % sext(X[rs2], 32);
else
X[rd] <= X[rs1];
}
}
REMU {
encoding: b0000001 | rs2[4:0] | rs1[4:0] | b111 | rd[4:0] | b0110011;
args_disass:"x%rd$d, x%rs1$d, x%rs2$d";
if(rd != 0){
if(X[rs2]!=0)
X[rd] <= zext(X[rs1], 32) % zext(X[rs2], 32);
else
X[rd] <= X[rs1];
}
}
}
}