162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */
262306a36Sopenharmony_ci#ifndef __UM_PROCESSOR_H
362306a36Sopenharmony_ci#define __UM_PROCESSOR_H
462306a36Sopenharmony_ci#include <linux/time-internal.h>
562306a36Sopenharmony_ci
662306a36Sopenharmony_ci/* include faultinfo structure */
762306a36Sopenharmony_ci#include <sysdep/faultinfo.h>
862306a36Sopenharmony_ci
962306a36Sopenharmony_ci#ifdef CONFIG_X86_32
1062306a36Sopenharmony_ci# include "processor_32.h"
1162306a36Sopenharmony_ci#else
1262306a36Sopenharmony_ci# include "processor_64.h"
1362306a36Sopenharmony_ci#endif
1462306a36Sopenharmony_ci
1562306a36Sopenharmony_ci#define KSTK_EIP(tsk) KSTK_REG(tsk, HOST_IP)
1662306a36Sopenharmony_ci#define KSTK_ESP(tsk) KSTK_REG(tsk, HOST_SP)
1762306a36Sopenharmony_ci#define KSTK_EBP(tsk) KSTK_REG(tsk, HOST_BP)
1862306a36Sopenharmony_ci
1962306a36Sopenharmony_ci#define ARCH_IS_STACKGROW(address) \
2062306a36Sopenharmony_ci       (address + 65536 + 32 * sizeof(unsigned long) >= UPT_SP(&current->thread.regs.regs))
2162306a36Sopenharmony_ci
2262306a36Sopenharmony_ci#include <asm/user.h>
2362306a36Sopenharmony_ci
2462306a36Sopenharmony_ci/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
2562306a36Sopenharmony_cistatic __always_inline void rep_nop(void)
2662306a36Sopenharmony_ci{
2762306a36Sopenharmony_ci	__asm__ __volatile__("rep;nop": : :"memory");
2862306a36Sopenharmony_ci}
2962306a36Sopenharmony_ci
3062306a36Sopenharmony_cistatic __always_inline void cpu_relax(void)
3162306a36Sopenharmony_ci{
3262306a36Sopenharmony_ci	if (time_travel_mode == TT_MODE_INFCPU ||
3362306a36Sopenharmony_ci	    time_travel_mode == TT_MODE_EXTERNAL)
3462306a36Sopenharmony_ci		time_travel_ndelay(1);
3562306a36Sopenharmony_ci	else
3662306a36Sopenharmony_ci		rep_nop();
3762306a36Sopenharmony_ci}
3862306a36Sopenharmony_ci
3962306a36Sopenharmony_ci#define task_pt_regs(t) (&(t)->thread.regs)
4062306a36Sopenharmony_ci
4162306a36Sopenharmony_ci#include <asm/processor-generic.h>
4262306a36Sopenharmony_ci
4362306a36Sopenharmony_ci#endif
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