- /*
- * linux/include/asm-arm/processor.h
- *
- * Copyright (C) 1995 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 35
- struct 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>
- #include <asm/arch/memory.h>
- #include <asm/proc/processor.h>
- struct debug_info {
- int nsaved;
- struct {
- unsigned long address;
- unsigned long insn;
- } 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 get_css_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() do { } while (0)
- /*
- * Create a new kernel thread
- */
- extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
- #endif
- #endif /* __ASM_ARM_PROCESSOR_H */