linux/arch/arm/kernel/asm-offsets.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * Copyright (C) 1995-2003 Russell King
   4 *               2001-2002 Keith Owens
   5 *     
   6 * Generate definitions needed by assembly language modules.
   7 * This code generates raw asm output which is post-processed to extract
   8 * and format the required data.
   9 */
  10#include <linux/compiler.h>
  11#include <linux/sched.h>
  12#include <linux/mm.h>
  13#include <linux/dma-mapping.h>
  14#include <asm/cacheflush.h>
  15#include <asm/glue-df.h>
  16#include <asm/glue-pf.h>
  17#include <asm/mach/arch.h>
  18#include <asm/thread_info.h>
  19#include <asm/memory.h>
  20#include <asm/mpu.h>
  21#include <asm/procinfo.h>
  22#include <asm/suspend.h>
  23#include <asm/vdso_datapage.h>
  24#include <asm/hardware/cache-l2x0.h>
  25#include <linux/kbuild.h>
  26#include "signal.h"
  27
  28/*
  29 * Make sure that the compiler and target are compatible.
  30 */
  31#if defined(__APCS_26__)
  32#error Sorry, your compiler targets APCS-26 but this kernel requires APCS-32
  33#endif
  34/*
  35 * GCC 4.8.0-4.8.2: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58854
  36 *            miscompiles find_get_entry(), and can result in EXT3 and EXT4
  37 *            filesystem corruption (possibly other FS too).
  38 */
  39#if defined(GCC_VERSION) && GCC_VERSION >= 40800 && GCC_VERSION < 40803
  40#error Your compiler is too buggy; it is known to miscompile kernels
  41#error and result in filesystem corruption and oopses.
  42#endif
  43
  44int main(void)
  45{
  46  DEFINE(TSK_ACTIVE_MM,         offsetof(struct task_struct, active_mm));
  47#ifdef CONFIG_STACKPROTECTOR
  48  DEFINE(TSK_STACK_CANARY,      offsetof(struct task_struct, stack_canary));
  49#endif
  50  BLANK();
  51  DEFINE(TI_FLAGS,              offsetof(struct thread_info, flags));
  52  DEFINE(TI_PREEMPT,            offsetof(struct thread_info, preempt_count));
  53  DEFINE(TI_ADDR_LIMIT,         offsetof(struct thread_info, addr_limit));
  54  DEFINE(TI_TASK,               offsetof(struct thread_info, task));
  55  DEFINE(TI_CPU,                offsetof(struct thread_info, cpu));
  56  DEFINE(TI_CPU_DOMAIN,         offsetof(struct thread_info, cpu_domain));
  57  DEFINE(TI_CPU_SAVE,           offsetof(struct thread_info, cpu_context));
  58  DEFINE(TI_USED_CP,            offsetof(struct thread_info, used_cp));
  59  DEFINE(TI_TP_VALUE,           offsetof(struct thread_info, tp_value));
  60  DEFINE(TI_FPSTATE,            offsetof(struct thread_info, fpstate));
  61#ifdef CONFIG_VFP
  62  DEFINE(TI_VFPSTATE,           offsetof(struct thread_info, vfpstate));
  63#ifdef CONFIG_SMP
  64  DEFINE(VFP_CPU,               offsetof(union vfp_state, hard.cpu));
  65#endif
  66#endif
  67#ifdef CONFIG_ARM_THUMBEE
  68  DEFINE(TI_THUMBEE_STATE,      offsetof(struct thread_info, thumbee_state));
  69#endif
  70#ifdef CONFIG_IWMMXT
  71  DEFINE(TI_IWMMXT_STATE,       offsetof(struct thread_info, fpstate.iwmmxt));
  72#endif
  73#ifdef CONFIG_CRUNCH
  74  DEFINE(TI_CRUNCH_STATE,       offsetof(struct thread_info, crunchstate));
  75#endif
  76#ifdef CONFIG_STACKPROTECTOR_PER_TASK
  77  DEFINE(TI_STACK_CANARY,       offsetof(struct thread_info, stack_canary));
  78#endif
  79  DEFINE(THREAD_SZ_ORDER,       THREAD_SIZE_ORDER);
  80  BLANK();
  81  DEFINE(S_R0,                  offsetof(struct pt_regs, ARM_r0));
  82  DEFINE(S_R1,                  offsetof(struct pt_regs, ARM_r1));
  83  DEFINE(S_R2,                  offsetof(struct pt_regs, ARM_r2));
  84  DEFINE(S_R3,                  offsetof(struct pt_regs, ARM_r3));
  85  DEFINE(S_R4,                  offsetof(struct pt_regs, ARM_r4));
  86  DEFINE(S_R5,                  offsetof(struct pt_regs, ARM_r5));
  87  DEFINE(S_R6,                  offsetof(struct pt_regs, ARM_r6));
  88  DEFINE(S_R7,                  offsetof(struct pt_regs, ARM_r7));
  89  DEFINE(S_R8,                  offsetof(struct pt_regs, ARM_r8));
  90  DEFINE(S_R9,                  offsetof(struct pt_regs, ARM_r9));
  91  DEFINE(S_R10,                 offsetof(struct pt_regs, ARM_r10));
  92  DEFINE(S_FP,                  offsetof(struct pt_regs, ARM_fp));
  93  DEFINE(S_IP,                  offsetof(struct pt_regs, ARM_ip));
  94  DEFINE(S_SP,                  offsetof(struct pt_regs, ARM_sp));
  95  DEFINE(S_LR,                  offsetof(struct pt_regs, ARM_lr));
  96  DEFINE(S_PC,                  offsetof(struct pt_regs, ARM_pc));
  97  DEFINE(S_PSR,                 offsetof(struct pt_regs, ARM_cpsr));
  98  DEFINE(S_OLD_R0,              offsetof(struct pt_regs, ARM_ORIG_r0));
  99  DEFINE(PT_REGS_SIZE,          sizeof(struct pt_regs));
 100  DEFINE(SVC_DACR,              offsetof(struct svc_pt_regs, dacr));
 101  DEFINE(SVC_ADDR_LIMIT,        offsetof(struct svc_pt_regs, addr_limit));
 102  DEFINE(SVC_REGS_SIZE,         sizeof(struct svc_pt_regs));
 103  BLANK();
 104  DEFINE(SIGFRAME_RC3_OFFSET,   offsetof(struct sigframe, retcode[3]));
 105  DEFINE(RT_SIGFRAME_RC3_OFFSET, offsetof(struct rt_sigframe, sig.retcode[3]));
 106  BLANK();
 107#ifdef CONFIG_CACHE_L2X0
 108  DEFINE(L2X0_R_PHY_BASE,       offsetof(struct l2x0_regs, phy_base));
 109  DEFINE(L2X0_R_AUX_CTRL,       offsetof(struct l2x0_regs, aux_ctrl));
 110  DEFINE(L2X0_R_TAG_LATENCY,    offsetof(struct l2x0_regs, tag_latency));
 111  DEFINE(L2X0_R_DATA_LATENCY,   offsetof(struct l2x0_regs, data_latency));
 112  DEFINE(L2X0_R_FILTER_START,   offsetof(struct l2x0_regs, filter_start));
 113  DEFINE(L2X0_R_FILTER_END,     offsetof(struct l2x0_regs, filter_end));
 114  DEFINE(L2X0_R_PREFETCH_CTRL,  offsetof(struct l2x0_regs, prefetch_ctrl));
 115  DEFINE(L2X0_R_PWR_CTRL,       offsetof(struct l2x0_regs, pwr_ctrl));
 116  BLANK();
 117#endif
 118#ifdef CONFIG_CPU_HAS_ASID
 119  DEFINE(MM_CONTEXT_ID,         offsetof(struct mm_struct, context.id.counter));
 120  BLANK();
 121#endif
 122  DEFINE(VMA_VM_MM,             offsetof(struct vm_area_struct, vm_mm));
 123  DEFINE(VMA_VM_FLAGS,          offsetof(struct vm_area_struct, vm_flags));
 124  BLANK();
 125  DEFINE(VM_EXEC,               VM_EXEC);
 126  BLANK();
 127  DEFINE(PAGE_SZ,               PAGE_SIZE);
 128  BLANK();
 129  DEFINE(SYS_ERROR0,            0x9f0000);
 130  BLANK();
 131  DEFINE(SIZEOF_MACHINE_DESC,   sizeof(struct machine_desc));
 132  DEFINE(MACHINFO_TYPE,         offsetof(struct machine_desc, nr));
 133  DEFINE(MACHINFO_NAME,         offsetof(struct machine_desc, name));
 134  BLANK();
 135  DEFINE(PROC_INFO_SZ,          sizeof(struct proc_info_list));
 136  DEFINE(PROCINFO_INITFUNC,     offsetof(struct proc_info_list, __cpu_flush));
 137  DEFINE(PROCINFO_MM_MMUFLAGS,  offsetof(struct proc_info_list, __cpu_mm_mmu_flags));
 138  DEFINE(PROCINFO_IO_MMUFLAGS,  offsetof(struct proc_info_list, __cpu_io_mmu_flags));
 139  BLANK();
 140#ifdef MULTI_DABORT
 141  DEFINE(PROCESSOR_DABT_FUNC,   offsetof(struct processor, _data_abort));
 142#endif
 143#ifdef MULTI_PABORT
 144  DEFINE(PROCESSOR_PABT_FUNC,   offsetof(struct processor, _prefetch_abort));
 145#endif
 146#ifdef MULTI_CPU
 147  DEFINE(CPU_SLEEP_SIZE,        offsetof(struct processor, suspend_size));
 148  DEFINE(CPU_DO_SUSPEND,        offsetof(struct processor, do_suspend));
 149  DEFINE(CPU_DO_RESUME,         offsetof(struct processor, do_resume));
 150#endif
 151#ifdef MULTI_CACHE
 152  DEFINE(CACHE_FLUSH_KERN_ALL,  offsetof(struct cpu_cache_fns, flush_kern_all));
 153#endif
 154#ifdef CONFIG_ARM_CPU_SUSPEND
 155  DEFINE(SLEEP_SAVE_SP_SZ,      sizeof(struct sleep_save_sp));
 156  DEFINE(SLEEP_SAVE_SP_PHYS,    offsetof(struct sleep_save_sp, save_ptr_stash_phys));
 157  DEFINE(SLEEP_SAVE_SP_VIRT,    offsetof(struct sleep_save_sp, save_ptr_stash));
 158#endif
 159  BLANK();
 160  DEFINE(DMA_BIDIRECTIONAL,     DMA_BIDIRECTIONAL);
 161  DEFINE(DMA_TO_DEVICE,         DMA_TO_DEVICE);
 162  DEFINE(DMA_FROM_DEVICE,       DMA_FROM_DEVICE);
 163  BLANK();
 164  DEFINE(CACHE_WRITEBACK_ORDER, __CACHE_WRITEBACK_ORDER);
 165  DEFINE(CACHE_WRITEBACK_GRANULE, __CACHE_WRITEBACK_GRANULE);
 166  BLANK();
 167#ifdef CONFIG_VDSO
 168  DEFINE(VDSO_DATA_SIZE,        sizeof(union vdso_data_store));
 169#endif
 170  BLANK();
 171#ifdef CONFIG_ARM_MPU
 172  DEFINE(MPU_RNG_INFO_RNGS,     offsetof(struct mpu_rgn_info, rgns));
 173  DEFINE(MPU_RNG_INFO_USED,     offsetof(struct mpu_rgn_info, used));
 174
 175  DEFINE(MPU_RNG_SIZE,          sizeof(struct mpu_rgn));
 176  DEFINE(MPU_RGN_DRBAR, offsetof(struct mpu_rgn, drbar));
 177  DEFINE(MPU_RGN_DRSR,  offsetof(struct mpu_rgn, drsr));
 178  DEFINE(MPU_RGN_DRACR, offsetof(struct mpu_rgn, dracr));
 179  DEFINE(MPU_RGN_PRBAR, offsetof(struct mpu_rgn, prbar));
 180  DEFINE(MPU_RGN_PRLAR, offsetof(struct mpu_rgn, prlar));
 181#endif
 182  return 0; 
 183}
 184