#ifndef _ALPHA_THREAD_INFO_H#define _ALPHA_THREAD_INFO_H #ifdef __KERNEL__ #ifndef __ASSEMBLY__#include <asm/processor.h>#include <asm/types.h>#include <asm/hwrpb.h>#endif #ifndef __ASSEMBLY__struct thread_info {	struct pcb_struct	pcb;		/* palcode state */ 	struct task_struct	*task;		/* main task structure */	unsigned int		flags;		/* low level flags */	unsigned int		ieee_state;	/* see fpu.h */ 	struct exec_domain	*exec_domain;	/* execution domain */	mm_segment_t		addr_limit;	/* thread address space */	unsigned		cpu;		/* current CPU */	int			preempt_count; /* 0 => preemptable, <0 => BUG */ 	int bpt_nsaved;	unsigned long bpt_addr[2];		/* breakpoint handling  */	unsigned int bpt_insn[2]; 	struct restart_block	restart_block;}; /* * Macros/functions for gaining access to the thread information structure. */#define INIT_THREAD_INFO(tsk)			\{						\	.task		= &tsk,			\	.exec_domain	= &default_exec_domain,	\	.addr_limit	= KERNEL_DS,		\	.preempt_count	= INIT_PREEMPT_COUNT,	\	.restart_block = {			\		.fn = do_no_restart_syscall,	\	},					\} #define init_thread_info	(init_thread_union.thread_info)#define init_stack		(init_thread_union.stack) /* How to get the thread information struct from C.  */register struct thread_info *__current_thread_info __asm__("$8");#define current_thread_info()  __current_thread_info #endif /* __ASSEMBLY__ */ /* Thread information allocation.  */#define THREAD_SIZE_ORDER 1#define THREAD_SIZE (2*PAGE_SIZE) #define PREEMPT_ACTIVE		0x40000000 /* * Thread information flags: * - these are process state flags and used from assembly * - pending work-to-be-done flags come first and must be assigned to be *   within bits 0 to 7 to fit in and immediate operand. * - ALPHA_UAC_SHIFT below must be kept consistent with the unaligned *   control flags. * * TIF_SYSCALL_TRACE is known to be 0 via blbs. */#define TIF_SYSCALL_TRACE	0	/* syscall trace active */#define TIF_NOTIFY_RESUME	1	/* callback before returning to user */#define TIF_SIGPENDING		2	/* signal pending */#define TIF_NEED_RESCHED	3	/* rescheduling necessary */#define TIF_POLLING_NRFLAG	8	/* poll_idle is polling NEED_RESCHED */#define TIF_DIE_IF_KERNEL	9	/* dik recursion lock */#define TIF_UAC_NOPRINT		10	/* ! Preserve sequence of following */#define TIF_UAC_NOFIX		11	/* ! flags as they match            */#define TIF_UAC_SIGBUS		12	/* ! userspace part of 'osf_sysinfo' */#define TIF_MEMDIE		13	/* is terminating due to OOM killer */#define TIF_RESTORE_SIGMASK	14	/* restore signal mask in do_signal */ #define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)#define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)#define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)#define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)#define _TIF_RESTORE_SIGMASK	(1<<TIF_RESTORE_SIGMASK)#define _TIF_NOTIFY_RESUME	(1<<TIF_NOTIFY_RESUME) /* Work to do on interrupt/exception return.  */#define _TIF_WORK_MASK		(_TIF_SIGPENDING | _TIF_NEED_RESCHED | \				 _TIF_NOTIFY_RESUME) /* Work to do on any return to userspace.  */#define _TIF_ALLWORK_MASK	(_TIF_WORK_MASK		\				 | _TIF_SYSCALL_TRACE) #define ALPHA_UAC_SHIFT		TIF_UAC_NOPRINT#define ALPHA_UAC_MASK		(1 << TIF_UAC_NOPRINT | 1 << TIF_UAC_NOFIX | \				 1 << TIF_UAC_SIGBUS) #define SET_UNALIGN_CTL(task,value)	({				     \	task_thread_info(task)->flags = ((task_thread_info(task)->flags &    \		~ALPHA_UAC_MASK)					     \		| (((value) << ALPHA_UAC_SHIFT)       & (1<<TIF_UAC_NOPRINT))\		| (((value) << (ALPHA_UAC_SHIFT + 1)) & (1<<TIF_UAC_SIGBUS)) \		| (((value) << (ALPHA_UAC_SHIFT - 1)) & (1<<TIF_UAC_NOFIX)));\	0; }) #define GET_UNALIGN_CTL(task,value)	({				\	put_user((task_thread_info(task)->flags & (1 << TIF_UAC_NOPRINT))\		  >> ALPHA_UAC_SHIFT					\		 | (task_thread_info(task)->flags & (1 << TIF_UAC_SIGBUS))\		 >> (ALPHA_UAC_SHIFT + 1)				\		 | (task_thread_info(task)->flags & (1 << TIF_UAC_NOFIX))\		 >> (ALPHA_UAC_SHIFT - 1),				\		 (int __user *)(value));				\	}) #endif /* __KERNEL__ */#endif /* _ALPHA_THREAD_INFO_H */