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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thread_info.h (2183B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
      4 */
      5
      6#ifndef __UM_THREAD_INFO_H
      7#define __UM_THREAD_INFO_H
      8
      9#define THREAD_SIZE_ORDER CONFIG_KERNEL_STACK_ORDER
     10#define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE)
     11
     12#ifndef __ASSEMBLY__
     13
     14#include <asm/types.h>
     15#include <asm/page.h>
     16#include <asm/segment.h>
     17#include <sysdep/ptrace_user.h>
     18
     19struct thread_info {
     20	struct task_struct	*task;		/* main task structure */
     21	unsigned long		flags;		/* low level flags */
     22	__u32			cpu;		/* current CPU */
     23	int			preempt_count;  /* 0 => preemptable,
     24						   <0 => BUG */
     25	struct thread_info	*real_thread;    /* Points to non-IRQ stack */
     26	unsigned long aux_fp_regs[FP_SIZE];	/* auxiliary fp_regs to save/restore
     27						   them out-of-band */
     28};
     29
     30#define INIT_THREAD_INFO(tsk)			\
     31{						\
     32	.task =		&tsk,			\
     33	.flags =		0,		\
     34	.cpu =		0,			\
     35	.preempt_count = INIT_PREEMPT_COUNT,	\
     36	.real_thread = NULL,			\
     37}
     38
     39/* how to get the thread information struct from C */
     40static inline struct thread_info *current_thread_info(void)
     41{
     42	struct thread_info *ti;
     43	unsigned long mask = THREAD_SIZE - 1;
     44	void *p;
     45
     46	asm volatile ("" : "=r" (p) : "0" (&ti));
     47	ti = (struct thread_info *) (((unsigned long)p) & ~mask);
     48	return ti;
     49}
     50
     51#endif
     52
     53#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
     54#define TIF_SIGPENDING		1	/* signal pending */
     55#define TIF_NEED_RESCHED	2	/* rescheduling necessary */
     56#define TIF_NOTIFY_SIGNAL	3	/* signal notifications exist */
     57#define TIF_RESTART_BLOCK	4
     58#define TIF_MEMDIE		5	/* is terminating due to OOM killer */
     59#define TIF_SYSCALL_AUDIT	6
     60#define TIF_RESTORE_SIGMASK	7
     61#define TIF_NOTIFY_RESUME	8
     62#define TIF_SECCOMP		9	/* secure computing */
     63#define TIF_SINGLESTEP		10	/* single stepping userspace */
     64
     65#define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
     66#define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
     67#define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
     68#define _TIF_NOTIFY_SIGNAL	(1 << TIF_NOTIFY_SIGNAL)
     69#define _TIF_MEMDIE		(1 << TIF_MEMDIE)
     70#define _TIF_SYSCALL_AUDIT	(1 << TIF_SYSCALL_AUDIT)
     71#define _TIF_SECCOMP		(1 << TIF_SECCOMP)
     72#define _TIF_SINGLESTEP		(1 << TIF_SINGLESTEP)
     73
     74#endif