/* SPDX-License-Identifier: GPL-2.0 *//*  * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) */ #ifndef __UM_PROCESSOR_GENERIC_H#define __UM_PROCESSOR_GENERIC_H struct pt_regs; struct task_struct; #include <asm/ptrace.h>#include <sysdep/archsetjmp.h> #include <linux/prefetch.h> #include <asm/cpufeatures.h> struct mm_struct; struct thread_struct {	struct pt_regs *segv_regs;	struct task_struct *prev_sched;	struct arch_thread arch;	jmp_buf switch_buf;	struct {		struct {			int (*proc)(void *);			void *arg;		} thread;	} request; 	void *segv_continue; 	/* Contains variable sized FP registers */	struct pt_regs regs;}; #define INIT_THREAD \{ \	.regs		   	= EMPTY_REGS,	\	.prev_sched		= NULL, \	.arch			= INIT_ARCH_THREAD, \	.request		= { } \} /* * User space process size: 3GB (default). */extern unsigned long task_size; #define TASK_SIZE (task_size) #undef STACK_TOP#undef STACK_TOP_MAX extern unsigned long stacksizelim; #define STACK_ROOM	(stacksizelim)#define STACK_TOP	(TASK_SIZE - 2 * PAGE_SIZE)#define STACK_TOP_MAX	STACK_TOP /* This decides where the kernel will search for a free chunk of vm * space during mmap's. */#define TASK_UNMAPPED_BASE	(0x40000000) extern void start_thread(struct pt_regs *regs, unsigned long entry, 			 unsigned long stack); struct cpuinfo_um {	unsigned long loops_per_jiffy;	int cache_alignment;	union {		__u32		x86_capability[NCAPINTS + NBUGINTS];		unsigned long	x86_capability_alignment;	};}; extern struct cpuinfo_um boot_cpu_data; #define cache_line_size()	(boot_cpu_data.cache_alignment) #define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf)extern unsigned long __get_wchan(struct task_struct *p); #endif