38 lines
879 B
C
38 lines
879 B
C
/*
|
|
* Defines a layout of L1 scratchpad memory that userspace can rely on.
|
|
*
|
|
* Copyright 2006-2008 Analog Devices Inc.
|
|
*
|
|
* Licensed under the GPL-2 or later.
|
|
*/
|
|
|
|
#ifndef _L1LAYOUT_H_
|
|
#define _L1LAYOUT_H_
|
|
|
|
#include <asm/blackfin.h>
|
|
|
|
#ifndef CONFIG_SMP
|
|
#ifndef __ASSEMBLY__
|
|
|
|
/* Data that is "mapped" into the process VM at the start of the L1 scratch
|
|
memory, so that each process can access it at a fixed address. Used for
|
|
stack checking. */
|
|
struct l1_scratch_task_info
|
|
{
|
|
/* Points to the start of the stack. */
|
|
void *stack_start;
|
|
/* Not updated by the kernel; a user process can modify this to
|
|
keep track of the lowest address of the stack pointer during its
|
|
runtime. */
|
|
void *lowest_sp;
|
|
};
|
|
|
|
/* A pointer to the structure in memory. */
|
|
#define L1_SCRATCH_TASK_INFO ((struct l1_scratch_task_info *)\
|
|
get_l1_scratch_start())
|
|
|
|
#endif
|
|
#endif
|
|
|
|
#endif
|