/* * linux/arch/unicore32/include/asm/processor.h * * Code specific to PKUnity SoC and UniCore ISA * * Copyright (C) 2001-2010 GUAN Xue-tao * * 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 __UNICORE_PROCESSOR_H__#define __UNICORE_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/ptrace.h>#include <asm/types.h> #ifdef __KERNEL__#define STACK_TOP	TASK_SIZE#define STACK_TOP_MAX	TASK_SIZE#endif 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;}; #define INIT_THREAD  {	} #define start_thread(regs, pc, sp)					\({									\	unsigned long *stack = (unsigned long *)sp;			\	memset(regs->uregs, 0, sizeof(regs->uregs));			\	regs->UCreg_asr = USER_MODE;					\	regs->UCreg_pc = pc & ~1;	/* pc */                        \	regs->UCreg_sp = sp;		/* sp */                        \	regs->UCreg_02 = stack[2];	/* r2 (envp) */                 \	regs->UCreg_01 = stack[1];	/* r1 (argv) */                 \	regs->UCreg_00 = stack[0];	/* r0 (argc) */                 \}) /* Forward declaration, a strange C thing */struct task_struct; /* Free all resources held by a thread. */extern void release_thread(struct task_struct *); /* Prepare to copy thread state - unlazy all lazy status */#define prepare_to_copy(tsk)	do { } while (0) unsigned long get_wchan(struct task_struct *p); #define cpu_relax()			barrier() /* * Create a new kernel thread */extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags); #define task_pt_regs(p) \	((struct pt_regs *)(THREAD_START_SP + task_stack_page(p)) - 1) #define KSTK_EIP(tsk)	(task_pt_regs(tsk)->UCreg_pc)#define KSTK_ESP(tsk)	(task_pt_regs(tsk)->UCreg_sp) #endif #endif /* __UNICORE_PROCESSOR_H__ */