1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Based on arch/arm/include/asm/thread_info.h
5 * Copyright (C) 2002 Russell King.
6 * Copyright (C) 2012 ARM Ltd.
8 #ifndef __ASM_THREAD_INFO_H
9 #define __ASM_THREAD_INFO_H
11 #include <linux/compiler.h>
17 #include <asm/memory.h>
18 #include <asm/stack_pointer.h>
19 #include <asm/types.h>
22 * low level task data that entry.S needs immediate access to.
25 unsigned long flags; /* low level flags */
26 #ifdef CONFIG_ARM64_SW_TTBR0_PAN
27 u64 ttbr0; /* saved TTBR0_EL1 */
30 u64 preempt_count; /* 0 => preemptible, <0 => bug */
32 #ifdef CONFIG_CPU_BIG_ENDIAN
41 #ifdef CONFIG_SHADOW_CALL_STACK
47 #define thread_saved_pc(tsk) \
48 ((unsigned long)(tsk->thread.cpu_context.pc))
49 #define thread_saved_sp(tsk) \
50 ((unsigned long)(tsk->thread.cpu_context.sp))
51 #define thread_saved_fp(tsk) \
52 ((unsigned long)(tsk->thread.cpu_context.fp))
54 void arch_setup_new_exec(void);
55 #define arch_setup_new_exec arch_setup_new_exec
57 void arch_release_task_struct(struct task_struct *tsk);
61 #define TIF_SIGPENDING 0 /* signal pending */
62 #define TIF_NEED_RESCHED 1 /* rescheduling necessary */
63 #define TIF_NOTIFY_RESUME 2 /* callback before returning to user */
64 #define TIF_FOREIGN_FPSTATE 3 /* CPU's FP state is not current's */
65 #define TIF_UPROBE 4 /* uprobe breakpoint or singlestep */
66 #define TIF_MTE_ASYNC_FAULT 5 /* MTE Asynchronous Tag Check Fault */
67 #define TIF_NOTIFY_SIGNAL 6 /* signal notifications exist */
68 #define TIF_SYSCALL_TRACE 8 /* syscall trace active */
69 #define TIF_SYSCALL_AUDIT 9 /* syscall auditing */
70 #define TIF_SYSCALL_TRACEPOINT 10 /* syscall tracepoint for ftrace */
71 #define TIF_SECCOMP 11 /* syscall secure computing */
72 #define TIF_SYSCALL_EMU 12 /* syscall emulation active */
73 #define TIF_MEMDIE 18 /* is terminating due to OOM killer */
75 #define TIF_RESTORE_SIGMASK 20
76 #define TIF_SINGLESTEP 21
77 #define TIF_32BIT 22 /* 32bit process */
78 #define TIF_SVE 23 /* Scalable Vector Extension in use */
79 #define TIF_SVE_VL_INHERIT 24 /* Inherit sve_vl_onexec across exec */
80 #define TIF_SSBD 25 /* Wants SSB mitigation */
81 #define TIF_TAGGED_ADDR 26 /* Allow tagged user addresses */
83 #define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
84 #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
85 #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
86 #define _TIF_FOREIGN_FPSTATE (1 << TIF_FOREIGN_FPSTATE)
87 #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
88 #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
89 #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT)
90 #define _TIF_SECCOMP (1 << TIF_SECCOMP)
91 #define _TIF_SYSCALL_EMU (1 << TIF_SYSCALL_EMU)
92 #define _TIF_UPROBE (1 << TIF_UPROBE)
93 #define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP)
94 #define _TIF_32BIT (1 << TIF_32BIT)
95 #define _TIF_SVE (1 << TIF_SVE)
96 #define _TIF_MTE_ASYNC_FAULT (1 << TIF_MTE_ASYNC_FAULT)
97 #define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL)
99 #define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
100 _TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE | \
101 _TIF_UPROBE | _TIF_MTE_ASYNC_FAULT | \
104 #define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
105 _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | \
108 #ifdef CONFIG_SHADOW_CALL_STACK
110 .scs_base = init_shadow_call_stack, \
111 .scs_sp = init_shadow_call_stack,
116 #define INIT_THREAD_INFO(tsk) \
118 .flags = _TIF_FOREIGN_FPSTATE, \
119 .preempt_count = INIT_PREEMPT_COUNT, \
123 #endif /* __ASM_THREAD_INFO_H */