blob: af0fda46e94bc969978a9572221ac2843f23bae2 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _ASM_M68K_THREAD_INFO_H
2#define _ASM_M68K_THREAD_INFO_H
3
4#include <asm/types.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07005#include <asm/page.h>
6
7struct thread_info {
8 struct task_struct *task; /* main task structure */
Roman Zippel3b66a1e2005-11-13 16:06:59 -08009 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -070010 struct exec_domain *exec_domain; /* execution domain */
Jesper Juhldcd497f2005-06-23 00:09:07 -070011 int preempt_count; /* 0 => preemptable, <0 => BUG */
Linus Torvalds1da177e2005-04-16 15:20:36 -070012 __u32 cpu; /* should always be 0 on m68k */
13 struct restart_block restart_block;
Linus Torvalds1da177e2005-04-16 15:20:36 -070014};
15
16#define PREEMPT_ACTIVE 0x4000000
17
18#define INIT_THREAD_INFO(tsk) \
19{ \
20 .task = &tsk, \
21 .exec_domain = &default_exec_domain, \
22 .restart_block = { \
23 .fn = do_no_restart_syscall, \
24 }, \
25}
26
27/* THREAD_SIZE should be 8k, so handle differently for 4k and 8k machines */
FUJITA Tomonorib69c49b2008-07-25 01:45:40 -070028#define THREAD_SIZE_ORDER (13 - PAGE_SHIFT)
Linus Torvalds1da177e2005-04-16 15:20:36 -070029
Al Viroabd03752005-11-13 16:06:58 -080030#define init_thread_info (init_task.thread.info)
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#define init_stack (init_thread_union.stack)
32
Al Viroabd03752005-11-13 16:06:58 -080033#define task_thread_info(tsk) (&(tsk)->thread.info)
Roman Zippelf7e42172007-05-09 02:35:17 -070034#define task_stack_page(tsk) ((tsk)->stack)
Al Viroabd03752005-11-13 16:06:58 -080035#define current_thread_info() task_thread_info(current)
Linus Torvalds1da177e2005-04-16 15:20:36 -070036
37#define __HAVE_THREAD_FUNCTIONS
38
Al Viroabd03752005-11-13 16:06:58 -080039#define setup_thread_stack(p, org) ({ \
Roman Zippelf7e42172007-05-09 02:35:17 -070040 *(struct task_struct **)(p)->stack = (p); \
Al Viroabd03752005-11-13 16:06:58 -080041 task_thread_info(p)->task = (p); \
42})
43
Roman Zippelf7e42172007-05-09 02:35:17 -070044#define end_of_stack(p) ((unsigned long *)(p)->stack + 1)
Al Viroabd03752005-11-13 16:06:58 -080045
Roman Zippel3b66a1e2005-11-13 16:06:59 -080046/* entry.S relies on these definitions!
47 * bits 0-7 are tested at every exception exit
48 * bits 8-15 are also tested at syscall exit
Linus Torvalds1da177e2005-04-16 15:20:36 -070049 */
Roman Zippel3b66a1e2005-11-13 16:06:59 -080050#define TIF_SIGPENDING 6 /* signal pending */
51#define TIF_NEED_RESCHED 7 /* rescheduling necessary */
52#define TIF_DELAYED_TRACE 14 /* single step a syscall */
53#define TIF_SYSCALL_TRACE 15 /* syscall trace active */
54#define TIF_MEMDIE 16
Matt Helsley83224b02008-10-18 20:27:18 -070055#define TIF_FREEZE 17 /* thread is freezing for suspend */
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
57#endif /* _ASM_M68K_THREAD_INFO_H */