24531904_j

操作 : if (PR[qp]) {
if (control_form) {
if (fr_form && (tmp_isrcode = fp_reg_disabled(f 2 , 0, 0, 0)))
disabled_fp_register_fault(tmp_isrcode, 0);
check_type = gr_form ? CHKS_GENERAL : CHKS_FLOAT;
fail = (gr_form && GR[r 2 ].nat) || (fr_form && FR[f 2 ] == NATVAL);
} else { // data_form
if (gr_form) {
reg_type = GENERAL;
check_type = CHKA_GENERAL;
alat_index = r 1 ;
always_fail = (alat_index == 0);
} else { // fr_form
reg_type = FLOAT;
check_type = CHKA_FLOAT;
alat_index = f 1 ;
always_fail = ((alat_index == 0) || (alat_index == 1));
}
fail = (always_fail || (!alat_cmp(reg_type, alat_index)));
}
if (fail) {
if (check_branch_implemented(check_type)) {
taken_branch = 1;
IP = IP + sign_ext((imm 21