cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

processor-generic.h (2230B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/* 
      3 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
      4 */
      5
      6#ifndef __UM_PROCESSOR_GENERIC_H
      7#define __UM_PROCESSOR_GENERIC_H
      8
      9struct pt_regs;
     10
     11struct task_struct;
     12
     13#include <asm/ptrace.h>
     14#include <sysdep/archsetjmp.h>
     15
     16#include <linux/prefetch.h>
     17
     18#include <asm/cpufeatures.h>
     19
     20struct mm_struct;
     21
     22struct thread_struct {
     23	struct pt_regs regs;
     24	struct pt_regs *segv_regs;
     25	int singlestep_syscall;
     26	void *fault_addr;
     27	jmp_buf *fault_catcher;
     28	struct task_struct *prev_sched;
     29	struct arch_thread arch;
     30	jmp_buf switch_buf;
     31	struct {
     32		int op;
     33		union {
     34			struct {
     35				int pid;
     36			} fork, exec;
     37			struct {
     38				int (*proc)(void *);
     39				void *arg;
     40			} thread;
     41			struct {
     42				void (*proc)(void *);
     43				void *arg;
     44			} cb;
     45		} u;
     46	} request;
     47};
     48
     49#define INIT_THREAD \
     50{ \
     51	.regs		   	= EMPTY_REGS,	\
     52	.fault_addr		= NULL, \
     53	.prev_sched		= NULL, \
     54	.arch			= INIT_ARCH_THREAD, \
     55	.request		= { 0 } \
     56}
     57
     58static inline void release_thread(struct task_struct *task)
     59{
     60}
     61
     62static inline void mm_copy_segments(struct mm_struct *from_mm,
     63				    struct mm_struct *new_mm)
     64{
     65}
     66
     67/*
     68 * User space process size: 3GB (default).
     69 */
     70extern unsigned long task_size;
     71
     72#define TASK_SIZE (task_size)
     73
     74#undef STACK_TOP
     75#undef STACK_TOP_MAX
     76
     77extern unsigned long stacksizelim;
     78
     79#define STACK_ROOM	(stacksizelim)
     80#define STACK_TOP	(TASK_SIZE - 2 * PAGE_SIZE)
     81#define STACK_TOP_MAX	STACK_TOP
     82
     83/* This decides where the kernel will search for a free chunk of vm
     84 * space during mmap's.
     85 */
     86#define TASK_UNMAPPED_BASE	(0x40000000)
     87
     88extern void start_thread(struct pt_regs *regs, unsigned long entry, 
     89			 unsigned long stack);
     90
     91struct cpuinfo_um {
     92	unsigned long loops_per_jiffy;
     93	int ipi_pipe[2];
     94	int cache_alignment;
     95	union {
     96		__u32		x86_capability[NCAPINTS + NBUGINTS];
     97		unsigned long	x86_capability_alignment;
     98	};
     99};
    100
    101extern struct cpuinfo_um boot_cpu_data;
    102
    103#define cpu_data (&boot_cpu_data)
    104#define current_cpu_data boot_cpu_data
    105#define cache_line_size()	(boot_cpu_data.cache_alignment)
    106
    107extern unsigned long get_thread_reg(int reg, jmp_buf *buf);
    108#define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf)
    109extern unsigned long __get_wchan(struct task_struct *p);
    110
    111#endif