asm-offsets.c 1.4 KB

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  1. // SPDX-License-Identifier: GPL-2.0
  2. /*
  3. * This program is used to generate definitions needed by
  4. * assembly language modules.
  5. *
  6. * We use the technique used in the OSF Mach kernel code:
  7. * generate asm statements containing #defines,
  8. * compile this file to assembler, and then extract the
  9. * #defines from the assembly-language output.
  10. *
  11. * On sparc, thread_info data is static and TI_XXX offsets are computed by hand.
  12. */
  13. #include <linux/sched.h>
  14. #include <linux/mm_types.h>
  15. // #include <linux/mm.h>
  16. #include <linux/kbuild.h>
  17. #include <asm/hibernate.h>
  18. #ifdef CONFIG_SPARC32
  19. int sparc32_foo(void)
  20. {
  21. DEFINE(AOFF_thread_fork_kpsr,
  22. offsetof(struct thread_struct, fork_kpsr));
  23. return 0;
  24. }
  25. #else
  26. int sparc64_foo(void)
  27. {
  28. #ifdef CONFIG_HIBERNATION
  29. BLANK();
  30. OFFSET(SC_REG_FP, saved_context, fp);
  31. OFFSET(SC_REG_CWP, saved_context, cwp);
  32. OFFSET(SC_REG_WSTATE, saved_context, wstate);
  33. OFFSET(SC_REG_TICK, saved_context, tick);
  34. OFFSET(SC_REG_PSTATE, saved_context, pstate);
  35. OFFSET(SC_REG_G4, saved_context, g4);
  36. OFFSET(SC_REG_G5, saved_context, g5);
  37. OFFSET(SC_REG_G6, saved_context, g6);
  38. #endif
  39. return 0;
  40. }
  41. #endif
  42. int foo(void)
  43. {
  44. BLANK();
  45. DEFINE(AOFF_task_thread, offsetof(struct task_struct, thread));
  46. BLANK();
  47. DEFINE(AOFF_mm_context, offsetof(struct mm_struct, context));
  48. BLANK();
  49. DEFINE(VMA_VM_MM, offsetof(struct vm_area_struct, vm_mm));
  50. /* DEFINE(NUM_USER_SEGMENTS, TASK_SIZE>>28); */
  51. return 0;
  52. }