vmadc.vim
No synopsis available
No description available.
Decode Variables
Bits<5> vs2 = $encoding[24:20];
Bits<5> imm = $encoding[19:15];
Bits<5> vd = $encoding[11:7];Execution
-
IDL
-
Sail
{
let SEW = get_sew();
let LMUL_pow = get_lmul_pow();
let num_elem = get_num_elem(LMUL_pow, SEW);
if illegal_vd_unmasked() then { handle_illegal(); return RETIRE_FAIL };
let 'n = num_elem;
let 'm = SEW;
let vm_val : vector('n, dec, bool) = read_vmask_carry(num_elem, 0b0, 0b00000);
let imm_val : bits('m) = sign_extend(simm);
let vs2_val : vector('n, dec, bits('m)) = read_vreg(num_elem, SEW, LMUL_pow, vs2);
let vd_val : vector('n, dec, bool) = read_vmask(num_elem, 0b0, vd);
result : vector('n, dec, bool) = undefined;
mask : vector('n, dec, bool) = undefined;
(result, mask) = init_masked_result_carry(num_elem, SEW, LMUL_pow, vd_val);
foreach (i from 0 to (num_elem - 1)) {
if mask[i] then {
let res : bool = match funct6 {
VIM_VMADC => unsigned(vs2_val[i]) + unsigned(imm_val) + unsigned(bool_to_bits(vm_val[i])) > 2 ^ SEW - 1
};
result[i] = res
}
};
write_vmask(num_elem, vd, result);
vstart = zeros();
RETIRE_SUCCESS
}