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
  29 int 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_CC_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 XTENSA_HAVE_COPROCESSORS
  97         DEFINE(THREAD_XTREGS_CP0, offsetof (struct thread_info, xtregs_cp));
  98         DEFINE(THREAD_XTREGS_CP1, offsetof (struct thread_info, xtregs_cp));
  99         DEFINE(THREAD_XTREGS_CP2, offsetof (struct thread_info, xtregs_cp));
 100         DEFINE(THREAD_XTREGS_CP3, offsetof (struct thread_info, xtregs_cp));
 101         DEFINE(THREAD_XTREGS_CP4, offsetof (struct thread_info, xtregs_cp));
 102         DEFINE(THREAD_XTREGS_CP5, offsetof (struct thread_info, xtregs_cp));
 103         DEFINE(THREAD_XTREGS_CP6, offsetof (struct thread_info, xtregs_cp));
 104         DEFINE(THREAD_XTREGS_CP7, offsetof (struct thread_info, xtregs_cp));
 105 #endif
 106         DEFINE(THREAD_XTREGS_USER, offsetof (struct thread_info, xtregs_user));
 107         DEFINE(XTREGS_USER_SIZE, sizeof(xtregs_user_t));
 108         DEFINE(THREAD_CURRENT_DS, offsetof (struct task_struct, \
 109                thread.current_ds));
 110
 111         /* struct mm_struct */
 112         DEFINE(MM_USERS, offsetof(struct mm_struct, mm_users));
 113         DEFINE(MM_PGD, offsetof (struct mm_struct, pgd));
 114         DEFINE(MM_CONTEXT, offsetof (struct mm_struct, context));
 115
 116         /* struct page */
 117         DEFINE(PAGE_FLAGS, offsetof(struct page, flags));
 118
 119         /* constants */
 120         DEFINE(_CLONE_VM, CLONE_VM);
 121         DEFINE(_CLONE_UNTRACED, CLONE_UNTRACED);
 122         DEFINE(PG_ARCH_1, PG_arch_1);
 123
 124         /* struct debug_table */
 125         DEFINE(DT_DEBUG_EXCEPTION,
 126                offsetof(struct debug_table, debug_exception));
 127         DEFINE(DT_DEBUG_SAVE, offsetof(struct debug_table, debug_save));
 128 #ifdef CONFIG_HAVE_HW_BREAKPOINT
 129         DEFINE(DT_DBREAKC_SAVE, offsetof(struct debug_table, dbreakc_save));
 130         DEFINE(DT_ICOUNT_SAVE, offsetof(struct debug_table, icount_save));
 131         DEFINE(DT_ICOUNT_LEVEL_SAVE,
 132                offsetof(struct debug_table, icount_level_save));
 133 #endif
 134
 135         /* struct exc_table */
 136         DEFINE(EXC_TABLE_KSTK, offsetof(struct exc_table, kstk));
 137         DEFINE(EXC_TABLE_DOUBLE_SAVE, offsetof(struct exc_table, double_save));
 138         DEFINE(EXC_TABLE_FIXUP, offsetof(struct exc_table, fixup));
 139         DEFINE(EXC_TABLE_PARAM, offsetof(struct exc_table, fixup_param));
 140         DEFINE(EXC_TABLE_SYSCALL_SAVE,
 141                offsetof(struct exc_table, syscall_save));
 142         DEFINE(EXC_TABLE_FAST_USER,
 143                offsetof(struct exc_table, fast_user_handler));
 144         DEFINE(EXC_TABLE_FAST_KERNEL,
 145                offsetof(struct exc_table, fast_kernel_handler));
 146         DEFINE(EXC_TABLE_DEFAULT, offsetof(struct exc_table, default_handler));
 147
 148         return 0;
 149 }