arch/arm64/kernel/asm-offsets.c

Source file repositories/reference/linux-study-clean/arch/arm64/kernel/asm-offsets.c

File Facts

System
Linux kernel
Corpus path
arch/arm64/kernel/asm-offsets.c
Extension
.c
Size
9238 bytes
Lines
190
Domain
Architecture Layer
Bucket
arch/arm64
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Based on arch/arm/kernel/asm-offsets.c
 *
 * Copyright (C) 1995-2003 Russell King
 *               2001-2002 Keith Owens
 * Copyright (C) 2012 ARM Ltd.
 */
#define COMPILE_OFFSETS

#include <linux/arm_sdei.h>
#include <linux/sched.h>
#include <linux/ftrace.h>
#include <linux/kexec.h>
#include <linux/mm.h>
#include <linux/kvm_host.h>
#include <linux/suspend.h>
#include <asm/cpufeature.h>
#include <asm/fixmap.h>
#include <asm/thread_info.h>
#include <asm/memory.h>
#include <asm/smp_plat.h>
#include <asm/suspend.h>
#include <linux/kbuild.h>
#include <linux/arm-smccc.h>

int main(void)
{
  DEFINE(TSK_TI_CPU,		offsetof(struct task_struct, thread_info.cpu));
  DEFINE(TSK_TI_FLAGS,		offsetof(struct task_struct, thread_info.flags));
  DEFINE(TSK_TI_PREEMPT,	offsetof(struct task_struct, thread_info.preempt_count));
#ifdef CONFIG_ARM64_SW_TTBR0_PAN
  DEFINE(TSK_TI_TTBR0,		offsetof(struct task_struct, thread_info.ttbr0));
#endif
#ifdef CONFIG_SHADOW_CALL_STACK
  DEFINE(TSK_TI_SCS_BASE,	offsetof(struct task_struct, thread_info.scs_base));
  DEFINE(TSK_TI_SCS_SP,		offsetof(struct task_struct, thread_info.scs_sp));
#endif
  DEFINE(TSK_STACK,		offsetof(struct task_struct, stack));
#ifdef CONFIG_STACKPROTECTOR
  DEFINE(TSK_STACK_CANARY,	offsetof(struct task_struct, stack_canary));
#endif
  BLANK();
  DEFINE(THREAD_CPU_CONTEXT,	offsetof(struct task_struct, thread.cpu_context));
  DEFINE(THREAD_SCTLR_USER,	offsetof(struct task_struct, thread.sctlr_user));
#ifdef CONFIG_ARM64_PTR_AUTH
  DEFINE(THREAD_KEYS_USER,	offsetof(struct task_struct, thread.keys_user));
#endif
#ifdef CONFIG_ARM64_PTR_AUTH_KERNEL
  DEFINE(THREAD_KEYS_KERNEL,	offsetof(struct task_struct, thread.keys_kernel));
#endif
#ifdef CONFIG_ARM64_MTE
  DEFINE(THREAD_MTE_CTRL,	offsetof(struct task_struct, thread.mte_ctrl));
#endif
  BLANK();
  DEFINE(S_X0,			offsetof(struct pt_regs, regs[0]));
  DEFINE(S_X2,			offsetof(struct pt_regs, regs[2]));
  DEFINE(S_X4,			offsetof(struct pt_regs, regs[4]));
  DEFINE(S_X6,			offsetof(struct pt_regs, regs[6]));
  DEFINE(S_X8,			offsetof(struct pt_regs, regs[8]));
  DEFINE(S_X10,			offsetof(struct pt_regs, regs[10]));
  DEFINE(S_X12,			offsetof(struct pt_regs, regs[12]));
  DEFINE(S_X14,			offsetof(struct pt_regs, regs[14]));
  DEFINE(S_X16,			offsetof(struct pt_regs, regs[16]));
  DEFINE(S_X18,			offsetof(struct pt_regs, regs[18]));
  DEFINE(S_X20,			offsetof(struct pt_regs, regs[20]));
  DEFINE(S_X22,			offsetof(struct pt_regs, regs[22]));
  DEFINE(S_X24,			offsetof(struct pt_regs, regs[24]));
  DEFINE(S_X26,			offsetof(struct pt_regs, regs[26]));
  DEFINE(S_X28,			offsetof(struct pt_regs, regs[28]));
  DEFINE(S_FP,			offsetof(struct pt_regs, regs[29]));
  DEFINE(S_LR,			offsetof(struct pt_regs, regs[30]));
  DEFINE(S_SP,			offsetof(struct pt_regs, sp));
  DEFINE(S_PC,			offsetof(struct pt_regs, pc));
  DEFINE(S_PSTATE,		offsetof(struct pt_regs, pstate));
  DEFINE(S_SYSCALLNO,		offsetof(struct pt_regs, syscallno));
  DEFINE(S_SDEI_TTBR1,		offsetof(struct pt_regs, sdei_ttbr1));
  DEFINE(S_PMR,			offsetof(struct pt_regs, pmr));
  DEFINE(S_STACKFRAME,		offsetof(struct pt_regs, stackframe));
  DEFINE(S_STACKFRAME_TYPE,	offsetof(struct pt_regs, stackframe.type));
  DEFINE(PT_REGS_SIZE,		sizeof(struct pt_regs));
  BLANK();
#ifdef CONFIG_DYNAMIC_FTRACE_WITH_ARGS
  DEFINE(FREGS_X0,		offsetof(struct __arch_ftrace_regs, regs[0]));
  DEFINE(FREGS_X2,		offsetof(struct __arch_ftrace_regs, regs[2]));
  DEFINE(FREGS_X4,		offsetof(struct __arch_ftrace_regs, regs[4]));
  DEFINE(FREGS_X6,		offsetof(struct __arch_ftrace_regs, regs[6]));
  DEFINE(FREGS_X8,		offsetof(struct __arch_ftrace_regs, regs[8]));
  DEFINE(FREGS_FP,		offsetof(struct __arch_ftrace_regs, fp));
  DEFINE(FREGS_LR,		offsetof(struct __arch_ftrace_regs, lr));

Annotation

Implementation Notes