LXR linux/arch/xtensa/kernel/asm-offsets.c

   1/*
   2 * arch/xtensa/kernel/asm-offsets.c
   3 *
   4 * Generates definitions from c-type structures used by assembly sources.
   5 *
   6 * This file is subject to the terms and conditions of the GNU General Public
   7 * License.  See the file "COPYING" in the main directory of this archive
   8 * for more details.
   9 *
  10 * Copyright (C) 2005 Tensilica Inc.
  11 *
  12 * Chris Zankel <chris@zankel.net>
  13 */
  14
  15#include <asm/processor.h>
  16#include <asm/coprocessor.h>
  17
  18#include <linux/types.h>
  19#include <linux/stddef.h>
  20#include <linux/thread_info.h>
  21#include <linux/ptrace.h>
  22#include <linux/mm.h>
  23#include <linux/kbuild.h>
  24
  25#include <asm/ptrace.h>
  26#include <asm/traps.h>
  27#include <linux/uaccess.h>
  28
  29int main(void)
  30{
  31        /* struct pt_regs */
  32        DEFINE(PT_PC, offsetof (struct pt_regs, pc));
  33        DEFINE(PT_PS, offsetof (struct pt_regs, ps));
  34        DEFINE(PT_DEPC, offsetof (struct pt_regs, depc));
  35        DEFINE(PT_EXCCAUSE, offsetof (struct pt_regs, exccause));
  36        DEFINE(PT_EXCVADDR, offsetof (struct pt_regs, excvaddr));
  37        DEFINE(PT_DEBUGCAUSE, offsetof (struct pt_regs, debugcause));
  38        DEFINE(PT_WMASK, offsetof (struct pt_regs, wmask));
  39        DEFINE(PT_LBEG, offsetof (struct pt_regs, lbeg));
  40        DEFINE(PT_LEND, offsetof (struct pt_regs, lend));
  41        DEFINE(PT_LCOUNT, offsetof (struct pt_regs, lcount));
  42        DEFINE(PT_SAR, offsetof (struct pt_regs, sar));
  43        DEFINE(PT_ICOUNTLEVEL, offsetof (struct pt_regs, icountlevel));
  44        DEFINE(PT_SYSCALL, offsetof (struct pt_regs, syscall));
  45        DEFINE(PT_SCOMPARE1, offsetof(struct pt_regs, scompare1));
  46        DEFINE(PT_THREADPTR, offsetof(struct pt_regs, threadptr));
  47        DEFINE(PT_AREG, offsetof (struct pt_regs, areg[0]));
  48        DEFINE(PT_AREG0, offsetof (struct pt_regs, areg[0]));
  49        DEFINE(PT_AREG1, offsetof (struct pt_regs, areg[1]));
  50        DEFINE(PT_AREG2, offsetof (struct pt_regs, areg[2]));
  51        DEFINE(PT_AREG3, offsetof (struct pt_regs, areg[3]));
  52        DEFINE(PT_AREG4, offsetof (struct pt_regs, areg[4]));
  53        DEFINE(PT_AREG5, offsetof (struct pt_regs, areg[5]));
  54        DEFINE(PT_AREG6, offsetof (struct pt_regs, areg[6]));
  55        DEFINE(PT_AREG7, offsetof (struct pt_regs, areg[7]));
  56        DEFINE(PT_AREG8, offsetof (struct pt_regs, areg[8]));
  57        DEFINE(PT_AREG9, offsetof (struct pt_regs, areg[9]));
  58        DEFINE(PT_AREG10, offsetof (struct pt_regs, areg[10]));
  59        DEFINE(PT_AREG11, offsetof (struct pt_regs, areg[11]));
  60        DEFINE(PT_AREG12, offsetof (struct pt_regs, areg[12]));
  61        DEFINE(PT_AREG13, offsetof (struct pt_regs, areg[13]));
  62        DEFINE(PT_AREG14, offsetof (struct pt_regs, areg[14]));
  63        DEFINE(PT_AREG15, offsetof (struct pt_regs, areg[15]));
  64        DEFINE(PT_WINDOWBASE, offsetof (struct pt_regs, windowbase));
  65        DEFINE(PT_WINDOWSTART, offsetof(struct pt_regs, windowstart));
  66        DEFINE(PT_SIZE, sizeof(struct pt_regs));
  67        DEFINE(PT_AREG_END, offsetof (struct pt_regs, areg[XCHAL_NUM_AREGS]));
  68        DEFINE(PT_USER_SIZE, offsetof(struct pt_regs, areg[XCHAL_NUM_AREGS]));
  69        DEFINE(PT_XTREGS_OPT, offsetof(struct pt_regs, xtregs_opt));
  70        DEFINE(XTREGS_OPT_SIZE, sizeof(xtregs_opt_t));
  71
  72        /* struct task_struct */
  73        DEFINE(TASK_PTRACE, offsetof (struct task_struct, ptrace));
  74        DEFINE(TASK_MM, offsetof (struct task_struct, mm));
  75        DEFINE(TASK_ACTIVE_MM, offsetof (struct task_struct, active_mm));
  76        DEFINE(TASK_PID, offsetof (struct task_struct, pid));
  77        DEFINE(TASK_THREAD, offsetof (struct task_struct, thread));
  78        DEFINE(TASK_THREAD_INFO, offsetof (struct task_struct, stack));
  79#ifdef CONFIG_STACKPROTECTOR
  80        DEFINE(TASK_STACK_CANARY, offsetof(struct task_struct, stack_canary));
  81#endif
  82        DEFINE(TASK_STRUCT_SIZE, sizeof (struct task_struct));
  83
  84        /* offsets in thread_info struct */
  85        OFFSET(TI_TASK, thread_info, task);
  86        OFFSET(TI_FLAGS, thread_info, flags);
  87        OFFSET(TI_STSTUS, thread_info, status);
  88        OFFSET(TI_CPU, thread_info, cpu);
  89        OFFSET(TI_PRE_COUNT, thread_info, preempt_count);
  90        OFFSET(TI_ADDR_LIMIT, thread_info, addr_limit);
  91
  92        /* struct thread_info (offset from start_struct) */
  93        DEFINE(THREAD_RA, offsetof (struct task_struct, thread.ra));
  94        DEFINE(THREAD_SP, offsetof (struct task_struct, thread.sp));
  95        DEFINE(THREAD_CPENABLE, offsetof (struct thread_info, cpenable));
  96#if XCHAL_HAVE_EXCLUSIVE
  97        DEFINE(THREAD_ATOMCTL8, offsetof (struct thread_info, atomctl8));
  98#endif
  99#if XTENSA_HAVE_COPROCESSORS
 100        DEFINE(THREAD_XTREGS_CP0, offsetof(struct thread_info, xtregs_cp.cp0));
 101        DEFINE(THREAD_XTREGS_CP1, offsetof(struct thread_info, xtregs_cp.cp1));
 102        DEFINE(THREAD_XTREGS_CP2, offsetof(struct thread_info, xtregs_cp.cp2));
 103        DEFINE(THREAD_XTREGS_CP3, offsetof(struct thread_info, xtregs_cp.cp3));
 104        DEFINE(THREAD_XTREGS_CP4, offsetof(struct thread_info, xtregs_cp.cp4));
 105        DEFINE(THREAD_XTREGS_CP5, offsetof(struct thread_info, xtregs_cp.cp5));
 106        DEFINE(THREAD_XTREGS_CP6, offsetof(struct thread_info, xtregs_cp.cp6));
 107        DEFINE(THREAD_XTREGS_CP7, offsetof(struct thread_info, xtregs_cp.cp7));
 108#endif
 109        DEFINE(THREAD_XTREGS_USER, offsetof (struct thread_info, xtregs_user));
 110        DEFINE(XTREGS_USER_SIZE, sizeof(xtregs_user_t));
 111        DEFINE(THREAD_CURRENT_DS, offsetof (struct task_struct, \
 112               thread.current_ds));
 113
 114        /* struct mm_struct */
 115        DEFINE(MM_USERS, offsetof(struct mm_struct, mm_users));
 116        DEFINE(MM_PGD, offsetof (struct mm_struct, pgd));
 117        DEFINE(MM_CONTEXT, offsetof (struct mm_struct, context));
 118
 119        /* struct page */
 120        DEFINE(PAGE_FLAGS, offsetof(struct page, flags));
 121
 122        /* constants */
 123        DEFINE(_CLONE_VM, CLONE_VM);
 124        DEFINE(_CLONE_UNTRACED, CLONE_UNTRACED);
 125        DEFINE(PG_ARCH_1, PG_arch_1);
 126
 127        /* struct debug_table */
 128        DEFINE(DT_DEBUG_EXCEPTION,
 129               offsetof(struct debug_table, debug_exception));
 130        DEFINE(DT_DEBUG_SAVE, offsetof(struct debug_table, debug_save));
 131#ifdef CONFIG_HAVE_HW_BREAKPOINT
 132        DEFINE(DT_DBREAKC_SAVE, offsetof(struct debug_table, dbreakc_save));
 133        DEFINE(DT_ICOUNT_SAVE, offsetof(struct debug_table, icount_save));
 134        DEFINE(DT_ICOUNT_LEVEL_SAVE,
 135               offsetof(struct debug_table, icount_level_save));
 136#endif
 137
 138        /* struct exc_table */
 139        DEFINE(EXC_TABLE_KSTK, offsetof(struct exc_table, kstk));
 140        DEFINE(EXC_TABLE_DOUBLE_SAVE, offsetof(struct exc_table, double_save));
 141        DEFINE(EXC_TABLE_FIXUP, offsetof(struct exc_table, fixup));
 142        DEFINE(EXC_TABLE_PARAM, offsetof(struct exc_table, fixup_param));
 143        DEFINE(EXC_TABLE_FAST_USER,
 144               offsetof(struct exc_table, fast_user_handler));
 145        DEFINE(EXC_TABLE_FAST_KERNEL,
 146               offsetof(struct exc_table, fast_kernel_handler));
 147        DEFINE(EXC_TABLE_DEFAULT, offsetof(struct exc_table, default_handler));
 148
 149        return 0;
 150}
 151