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Add workspace template
This commit is contained in:
Johannes Wirth
2025-10-07 14:15:26 +02:00
parent 44ab3f4622
commit 6c7e7f496b
5 changed files with 116 additions and 2 deletions
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79
wsTemplate/examples/LWC.core_desc Normal file
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InstructionSet Zxlwc_ascon {
architectural_state {
unsigned int XLEN=32;
register unsigned<XLEN> X[32] [[is_main_reg]];
}
functions {
unsigned<64> _ror64(unsigned<64> val, unsigned<64> shift_amount) {
return (val >> shift_amount) | (val << (64 - shift_amount));
}
// ROT_0 = { 19, 61, 1, 10, 7 }
unsigned<64> rot_0(unsigned<5> imm){
unsigned<64> ret;
if(imm == 0)
ret = 19;
else if(imm==1)
ret = 61;
else if(imm==2)
ret = 1;
else if(imm==3)
ret = 10;
else if(imm==4)
ret = 7;
else ret = 0;
return ret;
}
// ROT_1 = { 28, 39, 6, 17, 41 }
unsigned<64> rot_1(unsigned<5> imm){
unsigned<64> ret;
if(imm == 0)
ret = 28;
else if(imm==1)
ret = 39;
else if(imm==2)
ret = 6;
else if(imm==3)
ret = 17;
else if(imm==4)
ret = 41;
else ret = 0;
return ret;
}
}
instructions{
ASCON_SIGMA_LO [[enable=XLEN==32]] {
encoding: 2'b00 :: imm[4:0] :: rs2[4:0] :: rs1[4:0] :: 3'b111 :: rd[4:0] :: 7'b0101011;
behavior: {
unsigned<32> x_hi = (unsigned<32>)X[rs2];
unsigned<32> x_lo = (unsigned<32>)X[rs1];
unsigned<64> x = x_hi :: x_lo;
unsigned<64> r = x ^ _ror64(x, rot_0(imm)) ^ _ror64(x, rot_1(imm));
X[rd] = (unsigned<XLEN>)r[31:0];
}
}
ASCON_SIGMA_HI [[enable=XLEN==32]] {
encoding: 2'b01 :: imm[4:0] :: rs2[4:0] :: rs1[4:0] :: 3'b111 :: rd[4:0] :: 7'b0101011;
behavior: {
unsigned<32> x_hi = (unsigned<32>)X[rs2];
unsigned<32> x_lo = (unsigned<32>)X[rs1];
unsigned<64> x = x_hi :: x_lo;
unsigned<64> r = x ^ _ror64(x, rot_0(imm)) ^ _ror64(x, rot_1(imm));
X[rd] = (unsigned<XLEN>)r[63:32];
}
}
ASCON_SIGMA [[enable=XLEN==64]] {
encoding: 2'b10 :: imm[4:0] :: 5'b00000 :: rs1[4:0] :: 3'b110 :: rd[4:0] :: 7'b0101011;
behavior: {
unsigned<64> x = X[rs1];
unsigned<64> r = x ^ _ror64(x, rot_0(imm)) ^ _ror64(x, rot_1(imm));
X[rd] = (unsigned<XLEN>)r;
}
}
}
}