[linux-2.6-block.git] / arch / alpha / include / asm / processor.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * include/asm-alpha/processor.h
 *
 * Copyright (C) 1994 Linus Torvalds
 */

#ifndef __ASM_ALPHA_PROCESSOR_H
#define __ASM_ALPHA_PROCESSOR_H

/*
 * We have a 42-bit user address space: 4TB user VM...
 */
#define TASK_SIZE (0x40000000000UL)

#define STACK_TOP (0x00120000000UL)

#define STACK_TOP_MAX	0x00120000000UL

/* This decides where the kernel will search for a free chunk of vm
 * space during mmap's.
 */
#define TASK_UNMAPPED_BASE (TASK_SIZE / 2)

/* This is dead.  Everything has been moved to thread_info.  */
struct thread_struct { };
#define INIT_THREAD  { }

/* Do necessary setup to start up a newly executed thread.  */
struct pt_regs;
extern void start_thread(struct pt_regs *, unsigned long, unsigned long);

/* Free all resources held by a thread. */
struct task_struct;
unsigned long __get_wchan(struct task_struct *p);

#define KSTK_EIP(tsk) (task_pt_regs(tsk)->pc)

#define KSTK_ESP(tsk) \
  ((tsk) == current ? rdusp() : task_thread_info(tsk)->pcb.usp)

#define cpu_relax()	barrier()

#define ARCH_HAS_PREFETCH
#define ARCH_HAS_PREFETCHW

extern inline void prefetch(const void *ptr)  
{ 
	__builtin_prefetch(ptr, 0, 3);
}

extern inline void prefetchw(const void *ptr)  
{
	__builtin_prefetch(ptr, 1, 3);
}

#endif /* __ASM_ALPHA_PROCESSOR_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	/*
	3	* include/asm-alpha/processor.h
	4	*
	5	* Copyright (C) 1994 Linus Torvalds
	6	*/
	7
	8	#ifndef __ASM_ALPHA_PROCESSOR_H
	9	#define __ASM_ALPHA_PROCESSOR_H
	10
1da177e4 LT	11	/*
	12	* We have a 42-bit user address space: 4TB user VM...
	13	*/
	14	#define TASK_SIZE (0x40000000000UL)
	15
b029628b	16	#define STACK_TOP (0x00120000000UL)
922a70d3 DH	17
	18	#define STACK_TOP_MAX 0x00120000000UL
	19
1da177e4 LT	20	/* This decides where the kernel will search for a free chunk of vm
	21	* space during mmap's.
	22	*/
b029628b	23	#define TASK_UNMAPPED_BASE (TASK_SIZE / 2)
1da177e4	24
1da177e4 LT	25	/* This is dead. Everything has been moved to thread_info. */
	26	struct thread_struct { };
	27	#define INIT_THREAD { }
	28
1da177e4	29	/* Do necessary setup to start up a newly executed thread. */
396ada68	30	struct pt_regs;
1da177e4 LT	31	extern void start_thread(struct pt_regs *, unsigned long, unsigned long);
	32
	33	/* Free all resources held by a thread. */
16dc17ee	34	struct task_struct;
42a20f86	35	unsigned long __get_wchan(struct task_struct *p);
1da177e4	36
e52f4ca2	37	#define KSTK_EIP(tsk) (task_pt_regs(tsk)->pc)
1da177e4 LT	38
1da177e4 LT	39	#define KSTK_ESP(tsk) \
37bfbaf9	40	((tsk) == current ? rdusp() : task_thread_info(tsk)->pcb.usp)
1da177e4 LT	41
	42	#define cpu_relax() barrier()
	43
	44	#define ARCH_HAS_PREFETCH
	45	#define ARCH_HAS_PREFETCHW
1da177e4	46
1da177e4 LT	47	extern inline void prefetch(const void *ptr)
	48	{
	49	__builtin_prefetch(ptr, 0, 3);
	50	}
	51
	52	extern inline void prefetchw(const void *ptr)
	53	{
	54	__builtin_prefetch(ptr, 1, 3);
	55	}
	56
1da177e4	57	#endif /* __ASM_ALPHA_PROCESSOR_H */