1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 2024b246eSLinus Torvalds /* 3024b246eSLinus Torvalds * include/asm-alpha/processor.h 4024b246eSLinus Torvalds * 5024b246eSLinus Torvalds * Copyright (C) 1994 Linus Torvalds 6024b246eSLinus Torvalds */ 7024b246eSLinus Torvalds 8024b246eSLinus Torvalds #ifndef __ASM_ALPHA_PROCESSOR_H 9024b246eSLinus Torvalds #define __ASM_ALPHA_PROCESSOR_H 10024b246eSLinus Torvalds 11024b246eSLinus Torvalds /* 12024b246eSLinus Torvalds * We have a 42-bit user address space: 4TB user VM... 13024b246eSLinus Torvalds */ 14024b246eSLinus Torvalds #define TASK_SIZE (0x40000000000UL) 15024b246eSLinus Torvalds 16*52df9619SEric W. Biederman #define STACK_TOP (0x00120000000UL) 17024b246eSLinus Torvalds 18024b246eSLinus Torvalds #define STACK_TOP_MAX 0x00120000000UL 19024b246eSLinus Torvalds 20024b246eSLinus Torvalds /* This decides where the kernel will search for a free chunk of vm 21024b246eSLinus Torvalds * space during mmap's. 22024b246eSLinus Torvalds */ 23*52df9619SEric W. Biederman #define TASK_UNMAPPED_BASE (TASK_SIZE / 2) 24024b246eSLinus Torvalds 25024b246eSLinus Torvalds /* This is dead. Everything has been moved to thread_info. */ 26024b246eSLinus Torvalds struct thread_struct { }; 27024b246eSLinus Torvalds #define INIT_THREAD { } 28024b246eSLinus Torvalds 29024b246eSLinus Torvalds /* Do necessary setup to start up a newly executed thread. */ 30396ada68SRichard Weinberger struct pt_regs; 31024b246eSLinus Torvalds extern void start_thread(struct pt_regs *, unsigned long, unsigned long); 32024b246eSLinus Torvalds 33024b246eSLinus Torvalds /* Free all resources held by a thread. */ 3416dc17eeSTobias Klauser struct task_struct; 3542a20f86SKees Cook unsigned long __get_wchan(struct task_struct *p); 36024b246eSLinus Torvalds 37024b246eSLinus Torvalds #define KSTK_EIP(tsk) (task_pt_regs(tsk)->pc) 38024b246eSLinus Torvalds 39024b246eSLinus Torvalds #define KSTK_ESP(tsk) \ 40024b246eSLinus Torvalds ((tsk) == current ? rdusp() : task_thread_info(tsk)->pcb.usp) 41024b246eSLinus Torvalds 42024b246eSLinus Torvalds #define cpu_relax() barrier() 43024b246eSLinus Torvalds 44024b246eSLinus Torvalds #define ARCH_HAS_PREFETCH 45024b246eSLinus Torvalds #define ARCH_HAS_PREFETCHW 46024b246eSLinus Torvalds 47024b246eSLinus Torvalds extern inline void prefetch(const void *ptr) 48024b246eSLinus Torvalds { 49024b246eSLinus Torvalds __builtin_prefetch(ptr, 0, 3); 50024b246eSLinus Torvalds } prefetch(const void * ptr)51024b246eSLinus Torvalds 52024b246eSLinus Torvalds extern inline void prefetchw(const void *ptr) 53024b246eSLinus Torvalds { 54024b246eSLinus Torvalds __builtin_prefetch(ptr, 1, 3); 55024b246eSLinus Torvalds } prefetchw(const void * ptr)56024b246eSLinus Torvalds 57024b246eSLinus Torvalds #endif /* __ASM_ALPHA_PROCESSOR_H */ 58