#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,		\	.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 /* Thread information allocation.  */#define THREAD_SIZE (2*PAGE_SIZE)#define alloc_thread_info(tsk) \  ((struct thread_info *) __get_free_pages(GFP_KERNEL,1))#define free_thread_info(ti) free_pages((unsigned long) (ti), 1) #endif /* __ASSEMBLY__ */ #define PREEMPT_ACTIVE		0x40000000 /* * Thread information flags: * - these are process state flags and used from assembly * - pending work-to-be-done flags come first to fit in and immediate operand. * * TIF_SYSCALL_TRACE is known to be 0 via blbs. */#define TIF_SYSCALL_TRACE	0	/* syscall trace active */#define TIF_NOTIFY_RESUME	1	/* resumption notification requested */#define TIF_SIGPENDING		2	/* signal pending */#define TIF_NEED_RESCHED	3	/* rescheduling necessary */#define TIF_POLLING_NRFLAG	4	/* poll_idle is polling NEED_RESCHED */#define TIF_DIE_IF_KERNEL	5	/* dik recursion lock */#define TIF_UAC_NOPRINT		6	/* see sysinfo.h */#define TIF_UAC_NOFIX		7#define TIF_UAC_SIGBUS		8#define TIF_MEMDIE		9 #define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)#define _TIF_NOTIFY_RESUME	(1<<TIF_NOTIFY_RESUME)#define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)#define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)#define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG) /* Work to do on interrupt/exception return.  */#define _TIF_WORK_MASK		(_TIF_NOTIFY_RESUME	\				 | _TIF_SIGPENDING	\				 | _TIF_NEED_RESCHED) /* Work to do on any return to userspace.  */#define _TIF_ALLWORK_MASK	(_TIF_WORK_MASK		\				 | _TIF_SYSCALL_TRACE) #endif /* __KERNEL__ */#endif /* _ALPHA_THREAD_INFO_H */