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/*

 * include/asm-i960/processor.h

 *

 * Copyright (C) 1999 Keith Adams

 */

#ifndef __ASM_I960_PROCESSOR_H

#define __ASM_I960_PROCESSOR_H

#include <asm/segment.h>

/*

 * Bus types

 */

#define EISA_bus__is_a_macro    1

#define EISA_bus 0

#define MCA_bus__is_a_macro     1

#define MCA_bus 0

/*

 * The i960 can't do write protection

 */

#define wp_works_ok__is_a_macro 1

#define wp_works_ok 0

/* MAX floating point unit state size (FSAVE/FRESTORE) */

#define FPSTATESIZE   0

struct thread_struct {

        unsigned long  pfp;             /* saved pfp of thread */

};

/* XXX: do something with this */

#define INIT_MMAP { &init_mm, 0, 0x40000000, __pgprot(_PAGE_PRESENT|_PAGE_ACCESSED), VM_READ | VM_WRITE | VM_EXEC }

#define INIT_TSS  { \

        (long) init_kernel_stack, 0, \

}

unsigned long alloc_kernel_stack(void);

void free_kernel_stack(unsigned long ksp);

/*

 * Do necessary setup to start up a newly executed thread.

 */

struct i960_frame {

        unsigned long   pfp;

        unsigned long   sp;

        unsigned long   rip;

};

extern void start_thread(struct pt_regs * regs,

                         unsigned long ip,

                         unsigned long sp);

/* TODO: tracing stuff */

static inline void tron(void)

{

}

static inline void troncof(void)

{

}

static inline void troff(void)

{

}

/*

 * Return saved PC of a blocked thread.

 */

extern inline unsigned long thread_saved_pc(struct thread_struct *t)

{

        struct i960_frame* frame = (struct i960_frame*)t->pfp;

        return frame->rip;

}

#endif