rcr0
u_long rcr0(void);
u_int rcr0(void);
rtw_check_phydelay(struct rtw_regs *regs, uint32_t rcr0)
RTW_WRITE(regs, RTW_RCR, rcr0); /* restore RCR */
if ((rcr0() & CR0_TS) == 0)
#define fpu_start_emulating() load_cr0(rcr0() | CR0_TS)
vmm_host_cr0 = rcr0() | CR0_TS;