/*
* Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/

#ifndef __UM_PROCESSOR_GENERIC_H
#define __UM_PROCESSOR_GENERIC_H

struct pt_regs;

struct task_struct;

#include <asm/ptrace.h>
#include <registers.h>
#include <sysdep/archsetjmp.h>

#include <linux/prefetch.h>

struct mm_struct;

struct thread_struct {
struct pt_regs regs;
struct pt_regs *segv_regs;
int singlestep_syscall;
void *fault_addr;
jmp_buf *fault_catcher;
struct task_struct *prev_sched;
unsigned long temp_stack;
struct arch_thread arch;
jmp_buf switch_buf;
int mm_count;
struct {
int op;
union {
struct {
int pid;
} fork, exec;
struct {
int (*proc)(void *);
void *arg;
} thread;
struct {
void (*proc)(void *);
void *arg;
} cb;
} u;
} request;
};

#define INIT_THREAD \
{ \
.regs = EMPTY_REGS, \
.fault_addr = NULL, \
.prev_sched = NULL, \
.temp_stack = 0, \
.arch = INIT_ARCH_THREAD, \
.request = { 0 } \
}

static inline void release_thread(struct task_struct *task)
{
}

extern unsigned long thread_saved_pc(struct task_struct *t);

static inline void mm_copy_segments(struct mm_struct *from_mm,
struct mm_struct *new_mm)
{
}

#define init_stack (init_thread_union.stack)

/*
* User space process size: 3GB (default).
*/
extern unsigned long task_size;

#define TASK_SIZE (task_size)

#undef STACK_TOP
#undef STACK_TOP_MAX

extern unsigned long stacksizelim;

#define STACK_ROOM (stacksizelim)
#define STACK_TOP (TASK_SIZE - 2 * PAGE_SIZE)
#define STACK_TOP_MAX STACK_TOP

/* This decides where the kernel will search for a free chunk of vm
* space during mmap's.
*/
#define TASK_UNMAPPED_BASE (0x40000000)

extern void start_thread(struct pt_regs *regs, unsigned long entry,
unsigned long stack);

struct cpuinfo_um {
unsigned long loops_per_jiffy;
int ipi_pipe[2];
};

extern struct cpuinfo_um boot_cpu_data;

#define my_cpu_data cpu_data[smp_processor_id()]

#ifdef CONFIG_SMP
extern struct cpuinfo_um cpu_data[];
#define current_cpu_data cpu_data[smp_processor_id()]
#else
#define cpu_data (&boot_cpu_data)
#define current_cpu_data boot_cpu_data
#endif


#define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf)
extern unsigned long get_wchan(struct task_struct *p);

#endif