sections.h 2.3 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293
  1. /*
  2. * Copyright (c) 2011 The Chromium OS Authors.
  3. *
  4. * SPDX-License-Identifier: GPL-2.0+
  5. */
  6. /* Taken from Linux kernel, commit f56c3196 */
  7. #ifndef _ASM_GENERIC_SECTIONS_H_
  8. #define _ASM_GENERIC_SECTIONS_H_
  9. /* References to section boundaries */
  10. extern char _text[], _stext[], _etext[];
  11. extern char _data[], _sdata[], _edata[];
  12. extern char __bss_start[], __bss_stop[];
  13. extern char __init_begin[], __init_end[];
  14. extern char _sinittext[], _einittext[];
  15. extern char _end[], _init[];
  16. extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
  17. extern char __kprobes_text_start[], __kprobes_text_end[];
  18. extern char __entry_text_start[], __entry_text_end[];
  19. extern char __initdata_begin[], __initdata_end[];
  20. extern char __start_rodata[], __end_rodata[];
  21. extern char __efi_hello_world_begin[];
  22. extern char __efi_hello_world_end[];
  23. /* Start and end of .ctors section - used for constructor calls. */
  24. extern char __ctors_start[], __ctors_end[];
  25. /* function descriptor handling (if any). Override
  26. * in asm/sections.h */
  27. #ifndef dereference_function_descriptor
  28. #define dereference_function_descriptor(p) (p)
  29. #endif
  30. /* random extra sections (if any). Override
  31. * in asm/sections.h */
  32. #ifndef arch_is_kernel_text
  33. static inline int arch_is_kernel_text(unsigned long addr)
  34. {
  35. return 0;
  36. }
  37. #endif
  38. #ifndef arch_is_kernel_data
  39. static inline int arch_is_kernel_data(unsigned long addr)
  40. {
  41. return 0;
  42. }
  43. #endif
  44. /* U-Boot-specific things begin here */
  45. /* Start of U-Boot text region */
  46. extern char __text_start[];
  47. /* This marks the end of the text region which must be relocated */
  48. extern char __image_copy_end[];
  49. /*
  50. * This is the U-Boot entry point - prior to relocation it should be same
  51. * as __text_start
  52. */
  53. extern void _start(void);
  54. /*
  55. * ARM defines its symbols as char[]. Other arches define them as ulongs.
  56. */
  57. #ifdef CONFIG_ARM
  58. extern char __bss_start[];
  59. extern char __bss_end[];
  60. extern char __image_copy_start[];
  61. extern char __image_copy_end[];
  62. extern char _image_binary_end[];
  63. extern char __rel_dyn_start[];
  64. extern char __rel_dyn_end[];
  65. #else /* don't use offsets: */
  66. /* Exports from the Linker Script */
  67. extern ulong __data_end;
  68. extern ulong __rel_dyn_start;
  69. extern ulong __rel_dyn_end;
  70. extern ulong __bss_end;
  71. extern ulong _image_binary_end;
  72. extern ulong _TEXT_BASE; /* code start */
  73. #endif
  74. #endif /* _ASM_GENERIC_SECTIONS_H_ */