arch/arm/kernel/asm-offsets.c

   1 /*
   2  * Copyright (C) 1995-2003 Russell King
   3  *               2001-2002 Keith Owens
   4  *
   5  * Generate definitions needed by assembly language modules.
   6  * This code generates raw asm output which is post-processed to extract
   7  * and format the required data.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13 #include <linux/sched.h>
  14 #include <linux/mm.h>
  15 #include <linux/dma-mapping.h>
  16 #include <asm/mach/arch.h>
  17 #include <asm/thread_info.h>
  18 #include <asm/memory.h>
  19 #include <asm/procinfo.h>
  20 #include <linux/kbuild.h>
  21
  22 /*
  23  * Make sure that the compiler and target are compatible.
  24  */
  25 #if defined(__APCS_26__)
  26 #error Sorry, your compiler targets APCS-26 but this kernel requires APCS-32
  27 #endif
  28 /*
  29  * GCC 3.0, 3.1: general bad code generation.
  30  * GCC 3.2.0: incorrect function argument offset calculation.
  31  * GCC 3.2.x: miscompiles NEW_AUX_ENT in fs/binfmt_elf.c
  32  *            (http://gcc.gnu.org/PR8896) and incorrect structure
  33  *            initialisation in fs/jffs2/erase.c
  34  */
  35 #if (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
  36 #error Your compiler is too buggy; it is known to miscompile kernels.
  37 #error    Known good compilers: 3.3
  38 #endif
  39
  40 int main(void)
  41 {
  42   DEFINE(TSK_ACTIVE_MM,         offsetof(struct task_struct, active_mm));
  43   BLANK();
  44   DEFINE(TI_FLAGS,              offsetof(struct thread_info, flags));
  45   DEFINE(TI_PREEMPT,            offsetof(struct thread_info, preempt_count));
  46   DEFINE(TI_ADDR_LIMIT,         offsetof(struct thread_info, addr_limit));
  47   DEFINE(TI_TASK,               offsetof(struct thread_info, task));
  48   DEFINE(TI_EXEC_DOMAIN,        offsetof(struct thread_info, exec_domain));
  49   DEFINE(TI_CPU,                offsetof(struct thread_info, cpu));
  50   DEFINE(TI_CPU_DOMAIN,         offsetof(struct thread_info, cpu_domain));
  51   DEFINE(TI_CPU_SAVE,           offsetof(struct thread_info, cpu_context));
  52   DEFINE(TI_USED_CP,            offsetof(struct thread_info, used_cp));
  53   DEFINE(TI_TP_VALUE,           offsetof(struct thread_info, tp_value));
  54   DEFINE(TI_FPSTATE,            offsetof(struct thread_info, fpstate));
  55   DEFINE(TI_VFPSTATE,           offsetof(struct thread_info, vfpstate));
  56 #ifdef CONFIG_ARM_THUMBEE
  57   DEFINE(TI_THUMBEE_STATE,      offsetof(struct thread_info, thumbee_state));
  58 #endif
  59 #ifdef CONFIG_IWMMXT
  60   DEFINE(TI_IWMMXT_STATE,       offsetof(struct thread_info, fpstate.iwmmxt));
  61 #endif
  62 #ifdef CONFIG_CRUNCH
  63   DEFINE(TI_CRUNCH_STATE,       offsetof(struct thread_info, crunchstate));
  64 #endif
  65   BLANK();
  66   DEFINE(S_R0,                  offsetof(struct pt_regs, ARM_r0));
  67   DEFINE(S_R1,                  offsetof(struct pt_regs, ARM_r1));
  68   DEFINE(S_R2,                  offsetof(struct pt_regs, ARM_r2));
  69   DEFINE(S_R3,                  offsetof(struct pt_regs, ARM_r3));
  70   DEFINE(S_R4,                  offsetof(struct pt_regs, ARM_r4));
  71   DEFINE(S_R5,                  offsetof(struct pt_regs, ARM_r5));
  72   DEFINE(S_R6,                  offsetof(struct pt_regs, ARM_r6));
  73   DEFINE(S_R7,                  offsetof(struct pt_regs, ARM_r7));
  74   DEFINE(S_R8,                  offsetof(struct pt_regs, ARM_r8));
  75   DEFINE(S_R9,                  offsetof(struct pt_regs, ARM_r9));
  76   DEFINE(S_R10,                 offsetof(struct pt_regs, ARM_r10));
  77   DEFINE(S_FP,                  offsetof(struct pt_regs, ARM_fp));
  78   DEFINE(S_IP,                  offsetof(struct pt_regs, ARM_ip));
  79   DEFINE(S_SP,                  offsetof(struct pt_regs, ARM_sp));
  80   DEFINE(S_LR,                  offsetof(struct pt_regs, ARM_lr));
  81   DEFINE(S_PC,                  offsetof(struct pt_regs, ARM_pc));
  82   DEFINE(S_PSR,                 offsetof(struct pt_regs, ARM_cpsr));
  83   DEFINE(S_OLD_R0,              offsetof(struct pt_regs, ARM_ORIG_r0));
  84   DEFINE(S_FRAME_SIZE,          sizeof(struct pt_regs));
  85   BLANK();
  86 #ifdef CONFIG_CPU_HAS_ASID
  87   DEFINE(MM_CONTEXT_ID,         offsetof(struct mm_struct, context.id));
  88   BLANK();
  89 #endif
  90   DEFINE(VMA_VM_MM,             offsetof(struct vm_area_struct, vm_mm));
  91   DEFINE(VMA_VM_FLAGS,          offsetof(struct vm_area_struct, vm_flags));
  92   BLANK();
  93   DEFINE(VM_EXEC,               VM_EXEC);
  94   BLANK();
  95   DEFINE(PAGE_SZ,               PAGE_SIZE);
  96   BLANK();
  97   DEFINE(SYS_ERROR0,            0x9f0000);
  98   BLANK();
  99   DEFINE(SIZEOF_MACHINE_DESC,   sizeof(struct machine_desc));
 100   DEFINE(MACHINFO_TYPE,         offsetof(struct machine_desc, nr));
 101   DEFINE(MACHINFO_NAME,         offsetof(struct machine_desc, name));
 102   DEFINE(MACHINFO_PHYSIO,       offsetof(struct machine_desc, phys_io));
 103   DEFINE(MACHINFO_PGOFFIO,      offsetof(struct machine_desc, io_pg_offst));
 104   BLANK();
 105   DEFINE(PROC_INFO_SZ,          sizeof(struct proc_info_list));
 106   DEFINE(PROCINFO_INITFUNC,     offsetof(struct proc_info_list, __cpu_flush));
 107   DEFINE(PROCINFO_MM_MMUFLAGS,  offsetof(struct proc_info_list, __cpu_mm_mmu_flags));
 108   DEFINE(PROCINFO_IO_MMUFLAGS,  offsetof(struct proc_info_list, __cpu_io_mmu_flags));
 109   BLANK();
 110 #ifdef MULTI_DABORT
 111   DEFINE(PROCESSOR_DABT_FUNC,   offsetof(struct processor, _data_abort));
 112 #endif
 113 #ifdef MULTI_PABORT
 114   DEFINE(PROCESSOR_PABT_FUNC,   offsetof(struct processor, _prefetch_abort));
 115 #endif
 116   BLANK();
 117   DEFINE(DMA_BIDIRECTIONAL,     DMA_BIDIRECTIONAL);
 118   DEFINE(DMA_TO_DEVICE,         DMA_TO_DEVICE);
 119   DEFINE(DMA_FROM_DEVICE,       DMA_FROM_DEVICE);
 120   return 0;
 121 }