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asm-offsets.c

/*
 * arch/xtensa/kernel/asm-offsets.c
 *
 * Generates definitions from c-type structures used by assembly sources.
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 2005 Tensilica Inc.
 *
 * Chris Zankel <chris@zankel.net>
 */

#include <asm/processor.h>

#include <linux/types.h>
#include <linux/stddef.h>
#include <linux/thread_info.h>
#include <linux/ptrace.h>
#include <linux/mm.h>

#include <asm/ptrace.h>
#include <asm/processor.h>
#include <asm/uaccess.h>

#define DEFINE(sym, val) asm volatile("\n->" #sym " %0 " #val : : "i" (val))

int main(void)
{
      /* struct pt_regs */
      DEFINE(PT_PC, offsetof (struct pt_regs, pc));
      DEFINE(PT_PS, offsetof (struct pt_regs, ps));
      DEFINE(PT_DEPC, offsetof (struct pt_regs, depc));
      DEFINE(PT_EXCCAUSE, offsetof (struct pt_regs, exccause));
      DEFINE(PT_EXCVADDR, offsetof (struct pt_regs, excvaddr));
      DEFINE(PT_DEBUGCAUSE, offsetof (struct pt_regs, debugcause));
      DEFINE(PT_WMASK, offsetof (struct pt_regs, wmask));
      DEFINE(PT_LBEG, offsetof (struct pt_regs, lbeg));
      DEFINE(PT_LEND, offsetof (struct pt_regs, lend));
      DEFINE(PT_LCOUNT, offsetof (struct pt_regs, lcount));
      DEFINE(PT_SAR, offsetof (struct pt_regs, sar));
      DEFINE(PT_ICOUNTLEVEL, offsetof (struct pt_regs, icountlevel));
      DEFINE(PT_SYSCALL, offsetof (struct pt_regs, syscall));
      DEFINE(PT_AREG, offsetof (struct pt_regs, areg[0]));
      DEFINE(PT_AREG0, offsetof (struct pt_regs, areg[0]));
      DEFINE(PT_AREG1, offsetof (struct pt_regs, areg[1]));
      DEFINE(PT_AREG2, offsetof (struct pt_regs, areg[2]));
      DEFINE(PT_AREG3, offsetof (struct pt_regs, areg[3]));
      DEFINE(PT_AREG4, offsetof (struct pt_regs, areg[4]));
      DEFINE(PT_AREG5, offsetof (struct pt_regs, areg[5]));
      DEFINE(PT_AREG6, offsetof (struct pt_regs, areg[6]));
      DEFINE(PT_AREG7, offsetof (struct pt_regs, areg[7]));
      DEFINE(PT_AREG8, offsetof (struct pt_regs, areg[8]));
      DEFINE(PT_AREG9, offsetof (struct pt_regs, areg[9]));
      DEFINE(PT_AREG10, offsetof (struct pt_regs, areg[10]));
      DEFINE(PT_AREG11, offsetof (struct pt_regs, areg[11]));
      DEFINE(PT_AREG12, offsetof (struct pt_regs, areg[12]));
      DEFINE(PT_AREG13, offsetof (struct pt_regs, areg[13]));
      DEFINE(PT_AREG14, offsetof (struct pt_regs, areg[14]));
      DEFINE(PT_AREG15, offsetof (struct pt_regs, areg[15]));
      DEFINE(PT_WINDOWBASE, offsetof (struct pt_regs, windowbase));
      DEFINE(PT_WINDOWSTART, offsetof(struct pt_regs, windowstart));
      DEFINE(PT_SIZE, sizeof(struct pt_regs));
      DEFINE(PT_AREG_END, offsetof (struct pt_regs, areg[XCHAL_NUM_AREGS]));
      DEFINE(PT_USER_SIZE, offsetof(struct pt_regs, areg[XCHAL_NUM_AREGS]));

      /* struct task_struct */
      DEFINE(TASK_PTRACE, offsetof (struct task_struct, ptrace));
      DEFINE(TASK_MM, offsetof (struct task_struct, mm));
      DEFINE(TASK_ACTIVE_MM, offsetof (struct task_struct, active_mm));
      DEFINE(TASK_PID, offsetof (struct task_struct, pid));
      DEFINE(TASK_THREAD, offsetof (struct task_struct, thread));
      DEFINE(TASK_THREAD_INFO, offsetof (struct task_struct, stack));
      DEFINE(TASK_STRUCT_SIZE, sizeof (struct task_struct));

      /* struct thread_info (offset from start_struct) */
      DEFINE(THREAD_RA, offsetof (struct task_struct, thread.ra));
      DEFINE(THREAD_SP, offsetof (struct task_struct, thread.sp));
      DEFINE(THREAD_CP_SAVE, offsetof (struct task_struct, thread.cp_save));
      DEFINE(THREAD_CURRENT_DS, offsetof (struct task_struct, thread.current_ds));

      /* struct mm_struct */
      DEFINE(MM_USERS, offsetof(struct mm_struct, mm_users));
      DEFINE(MM_PGD, offsetof (struct mm_struct, pgd));
      DEFINE(MM_CONTEXT, offsetof (struct mm_struct, context));

      /* struct page */
      DEFINE(PAGE_FLAGS, offsetof(struct page, flags));

      /* constants */
      DEFINE(_CLONE_VM, CLONE_VM);
      DEFINE(_CLONE_UNTRACED, CLONE_UNTRACED);
      DEFINE(PG_ARCH_1, PG_arch_1);

      return 0;
}


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