arch/arm/kernel/asm-offsets.c

   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
  44 int 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 }