/*  * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) * Licensed under the GPL */ #ifndef __UM_PROCESSOR_GENERIC_H#define __UM_PROCESSOR_GENERIC_H struct pt_regs; struct task_struct; #include "asm/ptrace.h"#include "registers.h"#include "sysdep/archsetjmp.h" #include <linux/prefetch.h> struct mm_struct; struct thread_struct {	struct task_struct *saved_task;	/*	 * This flag is set to 1 before calling do_fork (and analyzed in	 * copy_thread) to mark that we are begin called from userspace (fork /	 * vfork / clone), and reset to 0 after. It is left to 0 when called	 * from kernelspace (i.e. kernel_thread() or fork_idle(),	 * as of 2.6.11).	 */	int forking;	struct pt_regs regs;	int singlestep_syscall;	void *fault_addr;	jmp_buf *fault_catcher;	struct task_struct *prev_sched;	unsigned long temp_stack;	jmp_buf *exec_buf;	struct arch_thread arch;	jmp_buf switch_buf;	int mm_count;	struct {		int op;		union {			struct {				int pid;			} fork, exec;			struct {				int (*proc)(void *);				void *arg;			} thread;			struct {				void (*proc)(void *);				void *arg;			} cb;		} u;	} request;}; #define INIT_THREAD \{ \	.forking		= 0, \	.regs		   	= EMPTY_REGS,	\	.fault_addr		= NULL, \	.prev_sched		= NULL, \	.temp_stack		= 0, \	.exec_buf		= NULL, \	.arch			= INIT_ARCH_THREAD, \	.request		= { 0 } \} extern struct task_struct *alloc_task_struct_node(int node); static inline void release_thread(struct task_struct *task){} extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); static inline void prepare_to_copy(struct task_struct *tsk){}  extern unsigned long thread_saved_pc(struct task_struct *t); static inline void mm_copy_segments(struct mm_struct *from_mm,				    struct mm_struct *new_mm){} #define init_stack	(init_thread_union.stack) /* * 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 ipi_pipe[2];}; extern struct cpuinfo_um boot_cpu_data; #define my_cpu_data		cpu_data[smp_processor_id()] #ifdef CONFIG_SMPextern struct cpuinfo_um cpu_data[];#define current_cpu_data cpu_data[smp_processor_id()]#else#define cpu_data (&boot_cpu_data)#define current_cpu_data boot_cpu_data#endif  #define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf)extern unsigned long get_wchan(struct task_struct *p); #endif