/* *  linux/include/asm-arm26/processor.h * *  Copyright (C) 1995 Russell King *  Copyright (C) 2003 Ian Molton * * 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;}) #ifdef __KERNEL__ #include <asm/atomic.h>#include <asm/ptrace.h>#include <linux/string.h> #define KERNEL_STACK_SIZE 4096 typedef struct {        void (*put_byte)(void);               /* Special calling convention */        void (*get_byte)(void);               /* Special calling convention */        void (*put_half)(void);               /* Special calling convention */        void (*get_half)(void);               /* Special calling convention */        void (*put_word)(void);               /* Special calling convention */        void (*get_word)(void);               /* Special calling convention */        void (*put_dword)(void);              /* Special calling convention */        unsigned long (*copy_from_user)(void *to, const void *from, unsigned long sz);        unsigned long (*copy_to_user)(void *to, const void *from, unsigned long sz);        unsigned long (*clear_user)(void *addr, unsigned long sz);        unsigned long (*strncpy_from_user)(char *to, const char *from, unsigned long sz);        unsigned long (*strnlen_user)(const char *s, long n);} uaccess_t; extern uaccess_t uaccess_user, uaccess_kernel; #define EXTRA_THREAD_STRUCT                     \        uaccess_t       *uaccess;         /* User access functions*/ #define EXTRA_THREAD_STRUCT_INIT                \        .uaccess        = &uaccess_kernel, // FIXME?!! #define start_thread(regs,pc,sp)                                        \({                                                                      \        unsigned long *stack = (unsigned long *)sp;                     \        set_fs(USER_DS);                                                \        memzero(regs->uregs, sizeof (regs->uregs));                     \        regs->ARM_pc = pc | ~0xfc000003;        /* pc */                \        regs->ARM_sp = sp;              /* sp */                        \        regs->ARM_r2 = stack[2];        /* r2 (envp) */                 \        regs->ARM_r1 = stack[1];        /* r1 (argv) */                 \        regs->ARM_r0 = stack[0];        /* r0 (argc) */                 \}) #define KSTK_EIP(tsk)   (((unsigned long *)(4096+(unsigned long)(tsk)))[1020])#define KSTK_ESP(tsk)   (((unsigned long *)(4096+(unsigned long)(tsk)))[1018]) struct debug_entry {        u32                     address;        u32		        insn;}; struct debug_info {        int                     nsaved;        struct debug_entry      bp[2];}; struct thread_struct {							/* fault info	  */	unsigned long			address;	unsigned long			trap_no;	unsigned long			error_code;							/* debugging	  */	struct debug_info		debug;	EXTRA_THREAD_STRUCT}; #define INIT_THREAD  { \EXTRA_THREAD_STRUCT_INIT \} /* Forward declaration, a strange C thing */struct task_struct; /* Free all resources held by a thread. */extern void release_thread(struct task_struct *); unsigned long get_wchan(struct task_struct *p); #define cpu_relax()			barrier() /* Prepare to copy thread state - unlazy all lazy status */#define prepare_to_copy(tsk)    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 */