From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001 From: Yuval Adam <_@yuv.al> Date: Wed, 30 Aug 2017 08:25:59 +0000 Subject: Initial file dump from open source release --- arch/blackfin/include/asm/l1layout.h | 37 ++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 arch/blackfin/include/asm/l1layout.h (limited to 'arch/blackfin/include/asm/l1layout.h') diff --git a/arch/blackfin/include/asm/l1layout.h b/arch/blackfin/include/asm/l1layout.h new file mode 100644 index 00000000..c87e6864 --- /dev/null +++ b/arch/blackfin/include/asm/l1layout.h @@ -0,0 +1,37 @@ +/* + * 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 + +#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 -- cgit v1.3.1