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-rw-r--r--arch/arm64/include/asm/thread_info.h128
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 */