/* SPDX-License-Identifier: GPL-2.0-only */
|
/*
|
* Based on arch/arm/include/asm/thread_info.h
|
*
|
* Copyright (C) 2002 Russell King.
|
* Copyright (C) 2012 ARM Ltd.
|
*/
|
#ifndef __ASM_THREAD_INFO_H
|
#define __ASM_THREAD_INFO_H
|
|
#include <linux/compiler.h>
|
|
#ifndef __ASSEMBLY__
|
|
struct task_struct;
|
|
#include <dovetail/thread_info.h>
|
#include <asm/memory.h>
|
#include <asm/stack_pointer.h>
|
#include <asm/types.h>
|
|
typedef unsigned long mm_segment_t;
|
|
/*
|
* low level task data that entry.S needs immediate access to.
|
*/
|
struct thread_info {
|
unsigned long flags; /* low level flags */
|
unsigned long local_flags; /* local (synchronous) flags */
|
mm_segment_t addr_limit; /* address limit */
|
#ifdef CONFIG_ARM64_SW_TTBR0_PAN
|
u64 ttbr0; /* saved TTBR0_EL1 */
|
#endif
|
union {
|
u64 preempt_count; /* 0 => preemptible, <0 => bug */
|
struct {
|
#ifdef CONFIG_CPU_BIG_ENDIAN
|
u32 need_resched;
|
u32 count;
|
#else
|
u32 count;
|
u32 need_resched;
|
#endif
|
} preempt;
|
};
|
#ifdef CONFIG_SHADOW_CALL_STACK
|
void *scs_base;
|
void *scs_sp;
|
#endif
|
struct oob_thread_state oob_state;
|
};
|
|
#define thread_saved_pc(tsk) \
|
((unsigned long)(tsk->thread.cpu_context.pc))
|
#define thread_saved_sp(tsk) \
|
((unsigned long)(tsk->thread.cpu_context.sp))
|
#define thread_saved_fp(tsk) \
|
((unsigned long)(tsk->thread.cpu_context.fp))
|
|
void arch_setup_new_exec(void);
|
#define arch_setup_new_exec arch_setup_new_exec
|
|
void arch_release_task_struct(struct task_struct *tsk);
|
|
#define ti_local_flags(__ti) ((__ti)->local_flags)
|
|
#endif
|
|
#define TIF_SIGPENDING 0 /* signal pending */
|
#define TIF_NEED_RESCHED 1 /* rescheduling necessary */
|
#define TIF_NOTIFY_RESUME 2 /* callback before returning to user */
|
#define TIF_FOREIGN_FPSTATE 3 /* CPU's FP state is not current's */
|
#define TIF_UPROBE 4 /* uprobe breakpoint or singlestep */
|
#define TIF_FSCHECK 5 /* Check FS is USER_DS on return */
|
#define TIF_MTE_ASYNC_FAULT 6 /* MTE Asynchronous Tag Check Fault */
|
#define TIF_NOTIFY_SIGNAL 7 /* signal notifications exist */
|
#define TIF_SYSCALL_TRACE 13 /* syscall trace active */
|
#define TIF_SYSCALL_AUDIT 9 /* syscall auditing */
|
#define TIF_SYSCALL_TRACEPOINT 10 /* syscall tracepoint for ftrace */
|
#define TIF_SECCOMP 11 /* syscall secure computing */
|
#define TIF_SYSCALL_EMU 12 /* syscall emulation active */
|
#define TIF_RETUSER 8 /* INBAND_TASK_RETUSER is pending */
|
#define TIF_MEMDIE 18 /* is terminating due to OOM killer */
|
#define TIF_FREEZE 19
|
#define TIF_RESTORE_SIGMASK 20
|
#define TIF_SINGLESTEP 21
|
#define TIF_32BIT 22 /* 32bit process */
|
#define TIF_SVE 23 /* Scalable Vector Extension in use */
|
#define TIF_SVE_VL_INHERIT 24 /* Inherit sve_vl_onexec across exec */
|
#define TIF_SSBD 25 /* Wants SSB mitigation */
|
#define TIF_TAGGED_ADDR 26 /* Allow tagged user addresses */
|
#define TIF_MAYDAY 27 /* Emergency trap pending */
|
|
#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
|
#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
|
#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
|
#define _TIF_FOREIGN_FPSTATE (1 << TIF_FOREIGN_FPSTATE)
|
#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
|
#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
|
#define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT)
|
#define _TIF_SECCOMP (1 << TIF_SECCOMP)
|
#define _TIF_SYSCALL_EMU (1 << TIF_SYSCALL_EMU)
|
#define _TIF_UPROBE (1 << TIF_UPROBE)
|
#define _TIF_FSCHECK (1 << TIF_FSCHECK)
|
#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP)
|
#define _TIF_32BIT (1 << TIF_32BIT)
|
#define _TIF_SVE (1 << TIF_SVE)
|
#define _TIF_MTE_ASYNC_FAULT (1 << TIF_MTE_ASYNC_FAULT)
|
#define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL)
|
#define _TIF_MAYDAY (1 << TIF_MAYDAY)
|
#define _TIF_RETUSER (1 << TIF_RETUSER)
|
|
#define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
|
_TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE | \
|
_TIF_UPROBE | _TIF_FSCHECK | _TIF_MTE_ASYNC_FAULT | \
|
_TIF_NOTIFY_SIGNAL | _TIF_RETUSER)
|
|
#define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
|
_TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | \
|
_TIF_SYSCALL_EMU)
|
|
#ifdef CONFIG_SHADOW_CALL_STACK
|
#define INIT_SCS \
|
.scs_base = init_shadow_call_stack, \
|
.scs_sp = init_shadow_call_stack,
|
#else
|
#define INIT_SCS
|
#endif
|
|
#define INIT_THREAD_INFO(tsk) \
|
{ \
|
.flags = _TIF_FOREIGN_FPSTATE, \
|
.preempt_count = INIT_PREEMPT_COUNT, \
|
.addr_limit = KERNEL_DS, \
|
INIT_SCS \
|
}
|
|
/*
|
* Local (synchronous) thread flags.
|
*/
|
#define _TLF_OOB 0x0001
|
#define _TLF_DOVETAIL 0x0002
|
#define _TLF_OFFSTAGE 0x0004
|
#define _TLF_OOBTRAP 0x0008
|
|
#endif /* __ASM_THREAD_INFO_H */
|
