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| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
|---|---|
| 2 | /* |
| 3 | * Based on arch/arm/include/asm/thread_info.h |
| 4 | * |
| 5 | * Copyright (C) 2002 Russell King. |
| 6 | * Copyright (C) 2012 ARM Ltd. |
| 7 | */ |
| 8 | #ifndef __ASM_THREAD_INFO_H |
| 9 | #define __ASM_THREAD_INFO_H |
| 10 | |
| 11 | #include <linux/compiler.h> |
| 12 | |
| 13 | #ifndef __ASSEMBLER__ |
| 14 | |
| 15 | struct task_struct; |
| 16 | |
| 17 | #include <asm/memory.h> |
| 18 | #include <asm/stack_pointer.h> |
| 19 | #include <asm/types.h> |
| 20 | |
| 21 | /* |
| 22 | * low level task data that entry.S needs immediate access to. |
| 23 | */ |
| 24 | struct thread_info { |
| 25 | unsigned long flags; /* low level flags */ |
| 26 | #ifdef CONFIG_ARM64_SW_TTBR0_PAN |
| 27 | u64 ttbr0; /* saved TTBR0_EL1 */ |
| 28 | #endif |
| 29 | union { |
| 30 | u64 preempt_count; /* 0 => preemptible, <0 => bug */ |
| 31 | struct { |
| 32 | #ifdef CONFIG_CPU_BIG_ENDIAN |
| 33 | u32 need_resched; |
| 34 | u32 count; |
| 35 | #else |
| 36 | u32 count; |
| 37 | u32 need_resched; |
| 38 | #endif |
| 39 | } preempt; |
| 40 | }; |
| 41 | #ifdef CONFIG_SHADOW_CALL_STACK |
| 42 | void *scs_base; |
| 43 | void *scs_sp; |
| 44 | #endif |
| 45 | u32 cpu; |
| 46 | }; |
| 47 | |
| 48 | #define thread_saved_pc(tsk) \ |
| 49 | ((unsigned long)(tsk->thread.cpu_context.pc)) |
| 50 | #define thread_saved_sp(tsk) \ |
| 51 | ((unsigned long)(tsk->thread.cpu_context.sp)) |
| 52 | #define thread_saved_fp(tsk) \ |
| 53 | ((unsigned long)(tsk->thread.cpu_context.fp)) |
| 54 | |
| 55 | void arch_setup_new_exec(void); |
| 56 | #define arch_setup_new_exec arch_setup_new_exec |
| 57 | |
| 58 | #endif |
| 59 | |
| 60 | #define TIF_SIGPENDING 0 /* signal pending */ |
| 61 | #define TIF_NEED_RESCHED 1 /* rescheduling necessary */ |
| 62 | #define TIF_NEED_RESCHED_LAZY 2 /* Lazy rescheduling needed */ |
| 63 | #define TIF_NOTIFY_RESUME 3 /* callback before returning to user */ |
| 64 | #define TIF_FOREIGN_FPSTATE 4 /* CPU's FP state is not current's */ |
| 65 | #define TIF_UPROBE 5 /* uprobe breakpoint or singlestep */ |
| 66 | #define TIF_MTE_ASYNC_FAULT 6 /* MTE Asynchronous Tag Check Fault */ |
| 67 | #define TIF_NOTIFY_SIGNAL 7 /* 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_PATCH_PENDING 13 /* pending live patching update */ |
| 74 | #define TIF_MEMDIE 18 /* is terminating due to OOM killer */ |
| 75 | #define TIF_FREEZE 19 |
| 76 | #define TIF_RESTORE_SIGMASK 20 |
| 77 | #define TIF_SINGLESTEP 21 |
| 78 | #define TIF_32BIT 22 /* 32bit process */ |
| 79 | #define TIF_SVE 23 /* Scalable Vector Extension in use */ |
| 80 | #define TIF_SVE_VL_INHERIT 24 /* Inherit SVE vl_onexec across exec */ |
| 81 | #define TIF_SSBD 25 /* Wants SSB mitigation */ |
| 82 | #define TIF_TAGGED_ADDR 26 /* Allow tagged user addresses */ |
| 83 | #define TIF_SME 27 /* SME in use */ |
| 84 | #define TIF_SME_VL_INHERIT 28 /* Inherit SME vl_onexec across exec */ |
| 85 | #define TIF_KERNEL_FPSTATE 29 /* Task is in a kernel mode FPSIMD section */ |
| 86 | #define TIF_TSC_SIGSEGV 30 /* SIGSEGV on counter-timer access */ |
| 87 | #define TIF_LAZY_MMU 31 /* Task in lazy mmu mode */ |
| 88 | #define TIF_LAZY_MMU_PENDING 32 /* Ops pending for lazy mmu mode exit */ |
| 89 | |
| 90 | #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) |
| 91 | #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) |
| 92 | #define _TIF_NEED_RESCHED_LAZY (1 << TIF_NEED_RESCHED_LAZY) |
| 93 | #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) |
| 94 | #define _TIF_FOREIGN_FPSTATE (1 << TIF_FOREIGN_FPSTATE) |
| 95 | #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) |
| 96 | #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) |
| 97 | #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) |
| 98 | #define _TIF_SECCOMP (1 << TIF_SECCOMP) |
| 99 | #define _TIF_SYSCALL_EMU (1 << TIF_SYSCALL_EMU) |
| 100 | #define _TIF_PATCH_PENDING (1 << TIF_PATCH_PENDING) |
| 101 | #define _TIF_UPROBE (1 << TIF_UPROBE) |
| 102 | #define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) |
| 103 | #define _TIF_32BIT (1 << TIF_32BIT) |
| 104 | #define _TIF_SVE (1 << TIF_SVE) |
| 105 | #define _TIF_MTE_ASYNC_FAULT (1 << TIF_MTE_ASYNC_FAULT) |
| 106 | #define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL) |
| 107 | #define _TIF_TSC_SIGSEGV (1 << TIF_TSC_SIGSEGV) |
| 108 | |
| 109 | #define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_NEED_RESCHED_LAZY | \ |
| 110 | _TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE | \ |
| 111 | _TIF_UPROBE | _TIF_MTE_ASYNC_FAULT | \ |
| 112 | _TIF_NOTIFY_SIGNAL | _TIF_SIGPENDING | \ |
| 113 | _TIF_PATCH_PENDING) |
| 114 | |
| 115 | #define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \ |
| 116 | _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | \ |
| 117 | _TIF_SYSCALL_EMU) |
| 118 | |
| 119 | #ifdef CONFIG_SHADOW_CALL_STACK |
| 120 | #define INIT_SCS \ |
| 121 | .scs_base = init_shadow_call_stack, \ |
| 122 | .scs_sp = init_shadow_call_stack, |
| 123 | #else |
| 124 | #define INIT_SCS |
| 125 | #endif |
| 126 | |
| 127 | #define INIT_THREAD_INFO(tsk) \ |
| 128 | { \ |
| 129 | .flags = _TIF_FOREIGN_FPSTATE, \ |
| 130 | .preempt_count = INIT_PREEMPT_COUNT, \ |
| 131 | INIT_SCS \ |
| 132 | } |
| 133 | |
| 134 | #endif /* __ASM_THREAD_INFO_H */ |
| 135 |
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