/* * 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