/* * include/asm-cris/processor.h * * Copyright (C) 2000, 2001 Axis Communications AB * * Authors:         Bjorn Wesen        Initial version * */ #ifndef __ASM_CRIS_PROCESSOR_H#define __ASM_CRIS_PROCESSOR_H #include <linux/config.h>#include <asm/system.h>#include <asm/page.h>#include <asm/ptrace.h>#include <asm/arch/processor.h> /* This decides where the kernel will search for a free chunk of vm * space during mmap's. */#define TASK_UNMAPPED_BASE      (PAGE_ALIGN(TASK_SIZE / 3)) /* THREAD_SIZE is the size of the task_struct/kernel_stack combo. * normally, the stack is found by doing something like p + THREAD_SIZE * in CRIS, a page is 8192 bytes, which seems like a sane size */ #define THREAD_SIZE       PAGE_SIZE#define KERNEL_STACK_SIZE PAGE_SIZE /* * At user->kernel entry, the pt_regs struct is stacked on the top of the kernel-stack. * This macro allows us to find those regs for a task. * Notice that subsequent pt_regs stackings, like recursive interrupts occurring while * we're in the kernel, won't affect this - only the first user->kernel transition * registers are reached by this. */ #define user_regs(thread_info) (((struct pt_regs *)((unsigned long)(thread_info) + THREAD_SIZE)) - 1) /* * Dito but for the currently running task */ #define current_regs() user_regs(current->thread_info) extern inline void prepare_to_copy(struct task_struct *tsk){} extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); unsigned long get_wchan(struct task_struct *p); #define KSTK_ESP(tsk)   ((tsk) == current ? rdusp() : (tsk)->thread.usp) extern unsigned long thread_saved_pc(struct task_struct *tsk); /* Free all resources held by a thread. */extern inline void release_thread(struct task_struct *dead_task){        /* Nothing needs to be done.  */} #define init_stack      (init_thread_union.stack) #define cpu_relax()     barrier() #endif /* __ASM_CRIS_PROCESSOR_H */