/* SPDX-License-Identifier: GPL-2.0 */#ifndef _ALPHA_THREAD_INFO_H#define _ALPHA_THREAD_INFO_H #ifdef __KERNEL__ #ifndef __ASSEMBLER__#include <asm/processor.h>#include <asm/types.h>#include <asm/hwrpb.h>#include <asm/sysinfo.h>#endif #ifndef __ASSEMBLER__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 */ 	unsigned		cpu;		/* current CPU */	int			preempt_count; /* 0 => preemptable, <0 => BUG */	unsigned int		status;		/* thread-synchronous flags */ 	int bpt_nsaved;	unsigned long bpt_addr[2];		/* breakpoint handling  */	unsigned int bpt_insn[2];	unsigned long fp[32];}; /* * Macros/functions for gaining access to the thread information structure. */#define INIT_THREAD_INFO(tsk)			\{						\	.task		= &tsk,			\	.preempt_count	= INIT_PREEMPT_COUNT,	\} /* 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 register unsigned long *current_stack_pointer __asm__ ("$30"); #endif /* __ASSEMBLER__ */ /* Thread information allocation.  */#define THREAD_SIZE_ORDER 1#define THREAD_SIZE (2*PAGE_SIZE) /* * 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. * * (Historically TIF_SYSCALL_TRACE was known to be 0 via blbs, but we may *  also test multiple bits via masks now.) */#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_SYSCALL_AUDIT	4	/* syscall audit active */#define TIF_NOTIFY_SIGNAL	5	/* signal notifications exist */#define TIF_SECCOMP		6	/* seccomp syscall filtering active */#define	TIF_SYSCALL_TRACEPOINT	7	/* syscall tracepoint instrumentation */#define TIF_DIE_IF_KERNEL	9	/* dik recursion lock */#define TIF_MEMDIE		13	/* is terminating due to OOM killer */#define TIF_POLLING_NRFLAG	14	/* idle is polling for TIF_NEED_RESCHED */ #define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)#define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)#define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)#define _TIF_NOTIFY_RESUME	(1<<TIF_NOTIFY_RESUME)#define _TIF_SYSCALL_AUDIT	(1<<TIF_SYSCALL_AUDIT)#define _TIF_NOTIFY_SIGNAL	(1<<TIF_NOTIFY_SIGNAL)#define _TIF_SECCOMP		(1<<TIF_SECCOMP)#define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)#define _TIF_SYSCALL_TRACEPOINT	(1<<TIF_SYSCALL_TRACEPOINT) /* * Work to do on syscall entry (in entry.S). * If you want this to exactly mirror what entry.S checks, keep it aligned * with the mask used before branching to syscall_trace_enter(). */#ifdef CONFIG_AUDITSYSCALL# define _TIF_SYSCALL_WORK	(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_SECCOMP \				| _TIF_SYSCALL_TRACEPOINT)#else# define _TIF_SYSCALL_WORK	(_TIF_SYSCALL_TRACE | _TIF_SECCOMP | _TIF_SYSCALL_TRACEPOINT)#endif /* Work to do on interrupt/exception return.  */#define _TIF_WORK_MASK		(_TIF_SIGPENDING | _TIF_NEED_RESCHED | \				 _TIF_NOTIFY_RESUME | _TIF_NOTIFY_SIGNAL) #define TS_UAC_NOPRINT		0x0001	/* ! Preserve the following three */#define TS_UAC_NOFIX		0x0002	/* ! flags as they match          */#define TS_UAC_SIGBUS		0x0004	/* ! userspace part of 'osf_sysinfo' */ #define TS_SAVED_FP		0x0008#define TS_RESTORE_FP		0x0010 #define SET_UNALIGN_CTL(task,value)	({				\	__u32 status = task_thread_info(task)->status & ~UAC_BITMASK;	\	if (value & PR_UNALIGN_NOPRINT)					\		status |= TS_UAC_NOPRINT;				\	if (value & PR_UNALIGN_SIGBUS)					\		status |= TS_UAC_SIGBUS;				\	if (value & 4)	/* alpha-specific */				\		status |= TS_UAC_NOFIX;					\	task_thread_info(task)->status = status;			\	0; }) #define GET_UNALIGN_CTL(task,value)	({				\	__u32 status = task_thread_info(task)->status & ~UAC_BITMASK;	\	__u32 res = 0;							\	if (status & TS_UAC_NOPRINT)					\		res |= PR_UNALIGN_NOPRINT;				\	if (status & TS_UAC_SIGBUS)					\		res |= PR_UNALIGN_SIGBUS;				\	if (status & TS_UAC_NOFIX)					\		res |= 4;						\	put_user(res, (int __user *)(value));				\	}) #ifndef __ASSEMBLER__extern void __save_fpu(void); static inline void save_fpu(void){	if (!(current_thread_info()->status & TS_SAVED_FP)) {		current_thread_info()->status |= TS_SAVED_FP;		__save_fpu();	}}#endif #endif /* __KERNEL__ */#endif /* _ALPHA_THREAD_INFO_H */