cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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processor.h (1802B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      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
     11#include <linux/personality.h>	/* for ADDR_LIMIT_32BIT */
     12
     13/*
     14 * We have a 42-bit user address space: 4TB user VM...
     15 */
     16#define TASK_SIZE (0x40000000000UL)
     17
     18#define STACK_TOP \
     19  (current->personality & ADDR_LIMIT_32BIT ? 0x80000000 : 0x00120000000UL)
     20
     21#define STACK_TOP_MAX	0x00120000000UL
     22
     23/* This decides where the kernel will search for a free chunk of vm
     24 * space during mmap's.
     25 */
     26#define TASK_UNMAPPED_BASE \
     27  ((current->personality & ADDR_LIMIT_32BIT) ? 0x40000000 : TASK_SIZE / 2)
     28
     29/* This is dead.  Everything has been moved to thread_info.  */
     30struct thread_struct { };
     31#define INIT_THREAD  { }
     32
     33/* Do necessary setup to start up a newly executed thread.  */
     34struct pt_regs;
     35extern void start_thread(struct pt_regs *, unsigned long, unsigned long);
     36
     37/* Free all resources held by a thread. */
     38struct task_struct;
     39extern void release_thread(struct task_struct *);
     40
     41unsigned long __get_wchan(struct task_struct *p);
     42
     43#define KSTK_EIP(tsk) (task_pt_regs(tsk)->pc)
     44
     45#define KSTK_ESP(tsk) \
     46  ((tsk) == current ? rdusp() : task_thread_info(tsk)->pcb.usp)
     47
     48#define cpu_relax()	barrier()
     49
     50#define ARCH_HAS_PREFETCH
     51#define ARCH_HAS_PREFETCHW
     52#define ARCH_HAS_SPINLOCK_PREFETCH
     53
     54#ifndef CONFIG_SMP
     55/* Nothing to prefetch. */
     56#define spin_lock_prefetch(lock)  	do { } while (0)
     57#endif
     58
     59extern inline void prefetch(const void *ptr)  
     60{ 
     61	__builtin_prefetch(ptr, 0, 3);
     62}
     63
     64extern inline void prefetchw(const void *ptr)  
     65{
     66	__builtin_prefetch(ptr, 1, 3);
     67}
     68
     69#ifdef CONFIG_SMP
     70extern inline void spin_lock_prefetch(const void *ptr)  
     71{
     72	__builtin_prefetch(ptr, 1, 3);
     73}
     74#endif
     75
     76#endif /* __ASM_ALPHA_PROCESSOR_H */