1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __UM_PROCESSOR_H 3 #define __UM_PROCESSOR_H 4 #include <linux/time-internal.h> 5 6 /* include faultinfo structure */ 7 #include <sysdep/faultinfo.h> 8 9 #ifdef CONFIG_X86_32 10 # include "processor_32.h" 11 #else 12 # include "processor_64.h" 13 #endif 14 15 #define KSTK_EIP(tsk) KSTK_REG(tsk, HOST_IP) 16 #define KSTK_ESP(tsk) KSTK_REG(tsk, HOST_SP) 17 #define KSTK_EBP(tsk) KSTK_REG(tsk, HOST_BP) 18 19 #define ARCH_IS_STACKGROW(address) \ 20 (address + 65536 + 32 * sizeof(unsigned long) >= UPT_SP(¤t->thread.regs.regs)) 21 22 #include <asm/user.h> 23 24 /* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */ rep_nop(void)25static __always_inline void rep_nop(void) 26 { 27 __asm__ __volatile__("rep;nop": : :"memory"); 28 } 29 cpu_relax(void)30static __always_inline void cpu_relax(void) 31 { 32 if (time_travel_mode == TT_MODE_INFCPU || 33 time_travel_mode == TT_MODE_EXTERNAL) 34 time_travel_ndelay(1); 35 else 36 rep_nop(); 37 } 38 39 #define task_pt_regs(t) (&(t)->thread.regs) 40 41 #include <asm/processor-generic.h> 42 43 #endif 44