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