| 1 | /* |
| 2 | * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,intel.linux}.com) |
| 3 | * Licensed under the GPL |
| 4 | */ |
| 5 | |
| 6 | #include "linux/mm.h" |
| 7 | #include "linux/fs.h" |
| 8 | #include "linux/module.h" |
| 9 | #include "linux/sched.h" |
| 10 | #include "linux/init_task.h" |
| 11 | #include "linux/mqueue.h" |
| 12 | #include "asm/uaccess.h" |
| 13 | #include "asm/pgtable.h" |
| 14 | #include "mem_user.h" |
| 15 | #include "os.h" |
| 16 | |
| 17 | static struct fs_struct init_fs = INIT_FS; |
| 18 | struct mm_struct init_mm = INIT_MM(init_mm); |
| 19 | static struct files_struct init_files = INIT_FILES; |
| 20 | static struct signal_struct init_signals = INIT_SIGNALS(init_signals); |
| 21 | static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); |
| 22 | EXPORT_SYMBOL(init_mm); |
| 23 | |
| 24 | /* |
| 25 | * Initial task structure. |
| 26 | * |
| 27 | * All other task structs will be allocated on slabs in fork.c |
| 28 | */ |
| 29 | |
| 30 | struct task_struct init_task = INIT_TASK(init_task); |
| 31 | |
| 32 | EXPORT_SYMBOL(init_task); |
| 33 | |
| 34 | /* |
| 35 | * Initial thread structure. |
| 36 | * |
| 37 | * We need to make sure that this is aligned due to the |
| 38 | * way process stacks are handled. This is done by having a special |
| 39 | * "init_task" linker map entry.. |
| 40 | */ |
| 41 | |
| 42 | union thread_union init_thread_union |
| 43 | __attribute__((__section__(".data.init_task"))) = |
| 44 | { INIT_THREAD_INFO(init_task) }; |
| 45 | |
| 46 | union thread_union cpu0_irqstack |
| 47 | __attribute__((__section__(".data.init_irqstack"))) = |
| 48 | { INIT_THREAD_INFO(init_task) }; |
| 49 | |
| 50 | void unprotect_stack(unsigned long stack) |
| 51 | { |
| 52 | os_protect_memory((void *) stack, THREAD_SIZE, 1, 1, 0); |
| 53 | } |