Commit | Line | Data |
---|---|---|
1394f032 BW |
1 | /* |
2 | * l1layout.h | |
3 | * Defines a layout of L1 scratchpad memory that userspace can rely on. | |
4 | */ | |
5 | ||
6 | #ifndef _L1LAYOUT_H_ | |
7 | #define _L1LAYOUT_H_ | |
8 | ||
9 | #include <asm/blackfin.h> | |
10 | ||
11 | #ifndef __ASSEMBLY__ | |
12 | ||
13 | /* Data that is "mapped" into the process VM at the start of the L1 scratch | |
14 | memory, so that each process can access it at a fixed address. Used for | |
15 | stack checking. */ | |
16 | struct l1_scratch_task_info | |
17 | { | |
18 | /* Points to the start of the stack. */ | |
19 | void *stack_start; | |
20 | /* Not updated by the kernel; a user process can modify this to | |
21 | keep track of the lowest address of the stack pointer during its | |
22 | runtime. */ | |
23 | void *lowest_sp; | |
24 | }; | |
25 | ||
26 | /* A pointer to the structure in memory. */ | |
27 | #define L1_SCRATCH_TASK_INFO ((struct l1_scratch_task_info *)L1_SCRATCH_START) | |
28 | ||
29 | #endif | |
30 | ||
31 | #endif |