summaryrefslogtreecommitdiffstats
path: root/arch/blackfin/include/asm/l1layout.h
blob: c13ded777828be20c82c3afcfa169dc1886c8440 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
/*
 * l1layout.h
 * Defines a layout of L1 scratchpad memory that userspace can rely on.
 */

#ifndef _L1LAYOUT_H_
#define _L1LAYOUT_H_

#include <asm/blackfin.h>

#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 *)L1_SCRATCH_START)

#endif

#endif
OpenPOWER on IntegriCloud