diff options
Diffstat (limited to 'libc/sysdeps/linux/bfin/bfin_l1layout.h')
| -rw-r--r-- | libc/sysdeps/linux/bfin/bfin_l1layout.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/bfin/bfin_l1layout.h b/libc/sysdeps/linux/bfin/bfin_l1layout.h new file mode 100644 index 000000000..00efd2358 --- /dev/null +++ b/libc/sysdeps/linux/bfin/bfin_l1layout.h @@ -0,0 +1,17 @@ +#define L1_SCRATCH_START 0xFFB00000 + +/* 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) |