cc92b870a7
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
35 lines
806 B
C
35 lines
806 B
C
/*
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* l1layout.h
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* Defines a layout of L1 scratchpad memory that userspace can rely on.
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*/
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#ifndef _L1LAYOUT_H_
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#define _L1LAYOUT_H_
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#include <asm/blackfin.h>
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#ifndef CONFIG_SMP
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#ifndef __ASSEMBLY__
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/* Data that is "mapped" into the process VM at the start of the L1 scratch
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memory, so that each process can access it at a fixed address. Used for
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stack checking. */
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struct l1_scratch_task_info
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{
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/* Points to the start of the stack. */
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void *stack_start;
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/* Not updated by the kernel; a user process can modify this to
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keep track of the lowest address of the stack pointer during its
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runtime. */
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void *lowest_sp;
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};
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/* A pointer to the structure in memory. */
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#define L1_SCRATCH_TASK_INFO ((struct l1_scratch_task_info *)\
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get_l1_scratch_start())
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#endif
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#endif
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#endif
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