VP/HIFIVE1-VP
8
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Streamline arch descriptions according to latest CoreDSL changes

Browse Source
This commit is contained in:
Eyck Jentzsch
2018-04-24 17:18:24 +02:00
parent 65ceedd157
commit 142654b0a2
12 changed files with 73 additions and 55 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
riscv/gen_input/RV32M.core_desc
View File

@ -2,14 +2,14 @@ import "RV32IBase.core_desc"
InsructionSet RV32M extends RV32IBase {
constants {
XLEN2
MAXLEN:=128
}
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$d";
if(rd != 0){
val res[XLEN2] <= zext(X[rs1], XLEN2) * zext(X[rs2], XLEN2);
val res[MAXLEN] <= zext(X[rs1], MAXLEN) * zext(X[rs2], MAXLEN);
X[rd]<= zext(res , XLEN);
}
}
@ -17,7 +17,7 @@ InsructionSet RV32M extends RV32IBase {
encoding: b0000001 | rs2[4:0] | rs1[4:0] | b001 | rd[4:0] | b0110011;
args_disass:"x%rd$d, x%rs1$d, x%rs2$d";
if(rd != 0){
val res[XLEN2] <= sext(X[rs1], XLEN2) * sext(X[rs2], XLEN2);
val res[MAXLEN] <= sext(X[rs1], MAXLEN) * sext(X[rs2], MAXLEN);
X[rd]<= zext(res >> XLEN, XLEN);
}
}
@ -25,7 +25,7 @@ InsructionSet RV32M extends RV32IBase {
encoding: b0000001 | rs2[4:0] | rs1[4:0] | b010 | rd[4:0] | b0110011;
args_disass:"x%rd$d, x%rs1$d, x%rs2$d";
if(rd != 0){
val res[XLEN2] <= sext(X[rs1], XLEN2) * zext(X[rs2], XLEN2);
val res[MAXLEN] <= sext(X[rs1], MAXLEN) * zext(X[rs2], MAXLEN);
X[rd]<= zext(res >> XLEN, XLEN);
}
}
@ -33,7 +33,7 @@ InsructionSet RV32M extends RV32IBase {
encoding: b0000001 | rs2[4:0] | rs1[4:0] | b011 | rd[4:0] | b0110011;
args_disass:"x%rd$d, x%rs1$d, x%rs2$d";
if(rd != 0){
val res[XLEN2] <= zext(X[rs1], XLEN2) * zext(X[rs2], XLEN2);
val res[MAXLEN] <= zext(X[rs1], MAXLEN) * zext(X[rs2], MAXLEN);
X[rd]<= zext(res >> XLEN, XLEN);
}
}