/* *  linux/include/asm-arm/processor.h * *  Copyright (C) 1995-2002 Russell King * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */#ifndef __ASM_ARM_PROCESSOR_H#define __ASM_ARM_PROCESSOR_H/* * Default implementation of macro that returns current * instruction pointer ("program counter"). */#define current_text_addr() ({ __label__ _l; _l: &&_l;})#define FP_SIZE 35struct fp_hard_struct {	unsigned int save[FP_SIZE];		/* as yet undefined */};struct fp_soft_struct {	unsigned int save[FP_SIZE];		/* undefined information */};union fp_state {	struct fp_hard_struct	hard;	struct fp_soft_struct	soft;};typedef unsigned long mm_segment_t;		/* domain register	*/#ifdef __KERNEL__#define EISA_bus 0#define MCA_bus 0#define MCA_bus__is_a_macro#include <asm/atomic.h>#include <asm/ptrace.h>#if 0	/* XXX###XXX */#include <asm/arch/memory.h>#endif	/* XXX###XXX */#include <asm/proc/processor.h>#include <asm/types.h>union debug_insn {	u32	arm;	u16	thumb;};struct debug_entry {	u32			address;	union debug_insn	insn;};struct debug_info {	int			nsaved;	struct debug_entry	bp[2];};struct thread_struct {	atomic_t			refcount;							/* fault info	  */	unsigned long			address;	unsigned long			trap_no;	unsigned long			error_code;							/* floating point */	union fp_state			fpstate;							/* debugging	  */	struct debug_info		debug;							/* context info	  */	struct context_save_struct	*save;	EXTRA_THREAD_STRUCT};#define INIT_THREAD  {					\	refcount:	ATOMIC_INIT(1),			\	EXTRA_THREAD_STRUCT_INIT			\}/* * Return saved PC of a blocked thread. */static inline unsigned long thread_saved_pc(struct thread_struct *t){	return t->save ? pc_pointer(t->save->pc) : 0;}static inline unsigned long thread_saved_fp(struct thread_struct *t){	return t->save ? t->save->fp : 0;}/* Forward declaration, a strange C thing */struct task_struct;/* Free all resources held by a thread. */extern void release_thread(struct task_struct *);/* Copy and release all segment info associated with a VM */#define copy_segments(tsk, mm)		do { } while (0)#define release_segments(mm)		do { } while (0)unsigned long get_wchan(struct task_struct *p);#define THREAD_SIZE	(8192)extern struct task_struct *alloc_task_struct(void);extern void __free_task_struct(struct task_struct *);#define get_task_struct(p)	atomic_inc(&(p)->thread.refcount)#define free_task_struct(p)					\ do {								\	if (atomic_dec_and_test(&(p)->thread.refcount))		\		__free_task_struct((p));			\ } while (0)#define init_task	(init_task_union.task)#define init_stack	(init_task_union.stack)#define cpu_relax()	barrier()/* * Create a new kernel thread */extern int arch_kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);#endif#endif /* __ASM_ARM_PROCESSOR_H */