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/cacheflush.h>
  17 #include <asm/glue-df.h>
  18 #include <asm/glue-pf.h>
  19 #include <asm/mach/arch.h>
  20 #include <asm/thread_info.h>
  21 #include <asm/memory.h>
  22 #include <asm/procinfo.h>
  23 #include <linux/kbuild.h>
  24
  25 /*
  26  * Make sure that the compiler and target are compatible.
  27  */
  28 #if defined(__APCS_26__)
  29 #error Sorry, your compiler targets APCS-26 but this kernel requires APCS-32
  30 #endif
  31 /*
  32  * GCC 3.0, 3.1: general bad code generation.
  33  * GCC 3.2.0: incorrect function argument offset calculation.
  34  * GCC 3.2.x: miscompiles NEW_AUX_ENT in fs/binfmt_elf.c
  35  *            (http://gcc.gnu.org/PR8896) and incorrect structure
  36  *            initialisation in fs/jffs2/erase.c
  37  */
  38 #if (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
  39 #error Your compiler is too buggy; it is known to miscompile kernels.
  40 #error    Known good compilers: 3.3
  41 #endif
  42
  43 int main(void)
  44 {
  45   DEFINE(TSK_ACTIVE_MM,         offsetof(struct task_struct, active_mm));
  46 #ifdef CONFIG_CC_STACKPROTECTOR
  47   DEFINE(TSK_STACK_CANARY,      offsetof(struct task_struct, stack_canary));
  48 #endif
  49   BLANK();
  50   DEFINE(TI_FLAGS,              offsetof(struct thread_info, flags));
  51   DEFINE(TI_PREEMPT,            offsetof(struct thread_info, preempt_count));
  52   DEFINE(TI_ADDR_LIMIT,         offsetof(struct thread_info, addr_limit));
  53   DEFINE(TI_TASK,               offsetof(struct thread_info, task));
  54   DEFINE(TI_EXEC_DOMAIN,        offsetof(struct thread_info, exec_domain));
  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   DEFINE(TI_VFPSTATE,           offsetof(struct thread_info, vfpstate));
  62 #ifdef CONFIG_SMP
  63   DEFINE(VFP_CPU,               offsetof(union vfp_state, hard.cpu));
  64 #endif
  65 #ifdef CONFIG_ARM_THUMBEE
  66   DEFINE(TI_THUMBEE_STATE,      offsetof(struct thread_info, thumbee_state));
  67 #endif
  68 #ifdef CONFIG_IWMMXT
  69   DEFINE(TI_IWMMXT_STATE,       offsetof(struct thread_info, fpstate.iwmmxt));
  70 #endif
  71 #ifdef CONFIG_CRUNCH
  72   DEFINE(TI_CRUNCH_STATE,       offsetof(struct thread_info, crunchstate));
  73 #endif
  74   BLANK();
  75   DEFINE(S_R0,                  offsetof(struct pt_regs, ARM_r0));
  76   DEFINE(S_R1,                  offsetof(struct pt_regs, ARM_r1));
  77   DEFINE(S_R2,                  offsetof(struct pt_regs, ARM_r2));
  78   DEFINE(S_R3,                  offsetof(struct pt_regs, ARM_r3));
  79   DEFINE(S_R4,                  offsetof(struct pt_regs, ARM_r4));
  80   DEFINE(S_R5,                  offsetof(struct pt_regs, ARM_r5));
  81   DEFINE(S_R6,                  offsetof(struct pt_regs, ARM_r6));
  82   DEFINE(S_R7,                  offsetof(struct pt_regs, ARM_r7));
  83   DEFINE(S_R8,                  offsetof(struct pt_regs, ARM_r8));
  84   DEFINE(S_R9,                  offsetof(struct pt_regs, ARM_r9));
  85   DEFINE(S_R10,                 offsetof(struct pt_regs, ARM_r10));
  86   DEFINE(S_FP,                  offsetof(struct pt_regs, ARM_fp));
  87   DEFINE(S_IP,                  offsetof(struct pt_regs, ARM_ip));
  88   DEFINE(S_SP,                  offsetof(struct pt_regs, ARM_sp));
  89   DEFINE(S_LR,                  offsetof(struct pt_regs, ARM_lr));
  90   DEFINE(S_PC,                  offsetof(struct pt_regs, ARM_pc));
  91   DEFINE(S_PSR,                 offsetof(struct pt_regs, ARM_cpsr));
  92   DEFINE(S_OLD_R0,              offsetof(struct pt_regs, ARM_ORIG_r0));
  93   DEFINE(S_FRAME_SIZE,          sizeof(struct pt_regs));
  94   BLANK();
  95 #ifdef CONFIG_CPU_HAS_ASID
  96   DEFINE(MM_CONTEXT_ID,         offsetof(struct mm_struct, context.id));
  97   BLANK();
  98 #endif
  99   DEFINE(VMA_VM_MM,             offsetof(struct vm_area_struct, vm_mm));
 100   DEFINE(VMA_VM_FLAGS,          offsetof(struct vm_area_struct, vm_flags));
 101   BLANK();
 102   DEFINE(VM_EXEC,               VM_EXEC);
 103   BLANK();
 104   DEFINE(PAGE_SZ,               PAGE_SIZE);
 105   BLANK();
 106   DEFINE(SYS_ERROR0,            0x9f0000);
 107   BLANK();
 108   DEFINE(SIZEOF_MACHINE_DESC,   sizeof(struct machine_desc));
 109   DEFINE(MACHINFO_TYPE,         offsetof(struct machine_desc, nr));
 110   DEFINE(MACHINFO_NAME,         offsetof(struct machine_desc, name));
 111   BLANK();
 112   DEFINE(PROC_INFO_SZ,          sizeof(struct proc_info_list));
 113   DEFINE(PROCINFO_INITFUNC,     offsetof(struct proc_info_list, __cpu_flush));
 114   DEFINE(PROCINFO_MM_MMUFLAGS,  offsetof(struct proc_info_list, __cpu_mm_mmu_flags));
 115   DEFINE(PROCINFO_IO_MMUFLAGS,  offsetof(struct proc_info_list, __cpu_io_mmu_flags));
 116   BLANK();
 117 #ifdef MULTI_DABORT
 118   DEFINE(PROCESSOR_DABT_FUNC,   offsetof(struct processor, _data_abort));
 119 #endif
 120 #ifdef MULTI_PABORT
 121   DEFINE(PROCESSOR_PABT_FUNC,   offsetof(struct processor, _prefetch_abort));
 122 #endif
 123 #ifdef MULTI_CPU
 124   DEFINE(CPU_SLEEP_SIZE,        offsetof(struct processor, suspend_size));
 125   DEFINE(CPU_DO_SUSPEND,        offsetof(struct processor, do_suspend));
 126   DEFINE(CPU_DO_RESUME,         offsetof(struct processor, do_resume));
 127 #endif
 128 #ifdef MULTI_CACHE
 129   DEFINE(CACHE_FLUSH_KERN_ALL,  offsetof(struct cpu_cache_fns, flush_kern_all));
 130 #endif
 131   BLANK();
 132   DEFINE(DMA_BIDIRECTIONAL,     DMA_BIDIRECTIONAL);
 133   DEFINE(DMA_TO_DEVICE,         DMA_TO_DEVICE);
 134   DEFINE(DMA_FROM_DEVICE,       DMA_FROM_DEVICE);
 135   return 0;
 136 }