diff options
Diffstat (limited to 'arch/arm64/include/asm/thread_info.h')
| -rw-r--r-- | arch/arm64/include/asm/thread_info.h | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/thread_info.h b/arch/arm64/include/asm/thread_info.h new file mode 100644 index 000000000..848739c15 --- /dev/null +++ b/arch/arm64/include/asm/thread_info.h @@ -0,0 +1,128 @@ +/* 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 <asm/memory.h> +#include <asm/stack_pointer.h> +#include <asm/types.h> + +/* + * low level task data that entry.S needs immediate access to. + */ +struct thread_info { + unsigned long flags; /* low level flags */ +#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 + u32 cpu; +}; + +#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); +int arch_dup_task_struct(struct task_struct *dst, + struct task_struct *src); + +#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_MTE_ASYNC_FAULT 5 /* MTE Asynchronous Tag Check Fault */ +#define TIF_NOTIFY_SIGNAL 6 /* signal notifications exist */ +#define TIF_SYSCALL_TRACE 8 /* 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_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_SME 27 /* SME in use */ +#define TIF_SME_VL_INHERIT 28 /* Inherit SME vl_onexec across exec */ + +#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_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_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \ + _TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE | \ + _TIF_UPROBE | _TIF_MTE_ASYNC_FAULT | \ + _TIF_NOTIFY_SIGNAL) + +#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, \ + INIT_SCS \ +} + +#endif /* __ASM_THREAD_INFO_H */ |