Página Principal Explorar Ajuda
Iniciar Sessão
coolsoul
/
u-boot
1
0
Fork 0
Ficheiros Problemas 0 Pull Requests 0 Wiki
Árvore: e160f7d430
Ramos Etiquetas
u-boot
/
arch
/
x86
/
lib
/
crt0_x86_64_efi.S

crt0_x86_64_efi.S 890 B
Histórico Em bruto

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051 
  1. /*
    2. 

  2.  * crt0-efi-x86_64.S - x86_64 EFI startup code.
    3. 

  3.  * Copyright (C) 1999 Hewlett-Packard Co.
    4. 

  4.  * Contributed by David Mosberger <davidm@hpl.hp.com>.
    5. 

  5.  * Copyright (C) 2005 Intel Co.
    6. 

  6.  * Contributed by Fenghua Yu <fenghua.yu@intel.com>.
    7. 

  7.  *
    8. 

  8.  * All rights reserved.
    9. 

  9.  * SPDX-License-Identifier:	BSD-3-Clause
    10. 

  10.  */
    11. 

  11. 	.text
    12. 

  12. 	.align 4
    13. 

  13. 

  14. 	.globl _start
    15. 

  15. _start:
    16. 

  16. 	subq $8, %rsp
    17. 

  17. 	pushq %rcx
    18. 

  18. 	pushq %rdx
    19. 

  19. 

  20. 0:
    21. 

  21. 	lea image_base(%rip), %rdi
    22. 

  22. 	lea _DYNAMIC(%rip), %rsi
    23. 

  23. 

  24. 	popq %rcx
    25. 

  25. 	popq %rdx
    26. 

  26. 	pushq %rcx
    27. 

  27. 	pushq %rdx
    28. 

  28. 	call _relocate
    29. 

  29. 

  30. 	popq %rdi
    31. 

  31. 	popq %rsi
    32. 

  32. 

  33. 	call efi_main
    34. 

  34. 	addq $8, %rsp
    35. 

  35. 

  36. .exit:
    37. 

  37. 	ret
    38. 

  38. 

  39. 	/*
    40. 

  40. 	 * hand-craft a dummy .reloc section so EFI knows it's a relocatable
    41. 

  41. 	 * executable:
    42. 

  42. 	 */
    43. 

  43. 	.data
    44. 

  44. dummy:	.long	0
    45. 

  45. 

  46. #define IMAGE_REL_ABSOLUTE	0
    47. 

  47. 	.section .reloc, "a"
    48. 

  48. label1:
    49. 

  49. 	.long	dummy-label1				/* Page RVA */
    50. 

  50. 	.long	10					/* Block Size (2*4+2) */
    51. 

  51. 	.word	(IMAGE_REL_ABSOLUTE << 12) +  0		/* reloc for dummy */
    52.