asm-offsets.c 1.9 KB

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  1. // SPDX-License-Identifier: GPL-2.0-or-later
  2. /*
  3. * OpenRISC asm-offsets.c
  4. *
  5. * Linux architectural port borrowing liberally from similar works of
  6. * others. All original copyrights apply as per the original source
  7. * declaration.
  8. *
  9. * Modifications for the OpenRISC architecture:
  10. * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
  11. * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
  12. *
  13. * This program is used to generate definitions needed by
  14. * assembly language modules.
  15. *
  16. * We use the technique used in the OSF Mach kernel code:
  17. * generate asm statements containing #defines,
  18. * compile this file to assembler, and then extract the
  19. * #defines from the assembly-language output.
  20. */
  21. #include <linux/signal.h>
  22. #include <linux/sched.h>
  23. #include <linux/kernel.h>
  24. #include <linux/errno.h>
  25. #include <linux/string.h>
  26. #include <linux/types.h>
  27. #include <linux/ptrace.h>
  28. #include <linux/mman.h>
  29. #include <linux/mm.h>
  30. #include <linux/io.h>
  31. #include <linux/thread_info.h>
  32. #include <linux/kbuild.h>
  33. #include <asm/page.h>
  34. #include <asm/processor.h>
  35. int main(void)
  36. {
  37. /* offsets into the task_struct */
  38. DEFINE(TASK_STATE, offsetof(struct task_struct, state));
  39. DEFINE(TASK_FLAGS, offsetof(struct task_struct, flags));
  40. DEFINE(TASK_PTRACE, offsetof(struct task_struct, ptrace));
  41. DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));
  42. DEFINE(TASK_MM, offsetof(struct task_struct, mm));
  43. DEFINE(TASK_ACTIVE_MM, offsetof(struct task_struct, active_mm));
  44. /* offsets into thread_info */
  45. DEFINE(TI_TASK, offsetof(struct thread_info, task));
  46. DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
  47. DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count));
  48. DEFINE(TI_KSP, offsetof(struct thread_info, ksp));
  49. DEFINE(PT_SIZE, sizeof(struct pt_regs));
  50. /* Interrupt register frame */
  51. DEFINE(STACK_FRAME_OVERHEAD, STACK_FRAME_OVERHEAD);
  52. DEFINE(INT_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs));
  53. DEFINE(NUM_USER_SEGMENTS, TASK_SIZE >> 28);
  54. return 0;
  55. }