From 639f6571458948b5112be2cf00c0c2c04db2897d Mon Sep 17 00:00:00 2001 From: Bryan Wu Date: Wed, 27 Aug 2008 10:51:02 +0800 Subject: Blackfin arch: move include/asm-blackfin header files to arch/blackfin Signed-off-by: Bryan Wu --- arch/blackfin/include/asm/l1layout.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 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 000000000000..c13ded777828 --- /dev/null +++ b/arch/blackfin/include/asm/l1layout.h @@ -0,0 +1,31 @@ +/* + * l1layout.h + * Defines a layout of L1 scratchpad memory that userspace can rely on. + */ + +#ifndef _L1LAYOUT_H_ +#define _L1LAYOUT_H_ + +#include + +#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 -- cgit v1.2.3-59-g8ed1b