/arch/x86/kernel/efi_stub_64.S

https://bitbucket.org/thekraven/iscream_thunderc-2.6.35 · Assembly · 116 lines · 99 code · 10 blank · 7 comment · 0 complexity · 1eddb5779579189a0c7cb80a3506cd56 MD5 · raw file 

    

  1. /*
    2. 

  2.  * Function calling ABI conversion from Linux to EFI for x86_64
    3. 

  3.  *
    4. 

  4.  * Copyright (C) 2007 Intel Corp
    5. 

  5.  *	Bibo Mao <bibo.mao@intel.com>
    6. 

  6.  *	Huang Ying <ying.huang@intel.com>
    7. 

  7.  */
    8. 

  8. 

  9. #include <linux/linkage.h>
    10. 

  10. 

  11. #define SAVE_XMM			\
    12. 

  12. 	mov %rsp, %rax;			\
    13. 

  13. 	subq $0x70, %rsp;		\
    14. 

  14. 	and $~0xf, %rsp;		\
    15. 

  15. 	mov %rax, (%rsp);		\
    16. 

  16. 	mov %cr0, %rax;			\
    17. 

  17. 	clts;				\
    18. 

  18. 	mov %rax, 0x8(%rsp);		\
    19. 

  19. 	movaps %xmm0, 0x60(%rsp);	\
    20. 

  20. 	movaps %xmm1, 0x50(%rsp);	\
    21. 

  21. 	movaps %xmm2, 0x40(%rsp);	\
    22. 

  22. 	movaps %xmm3, 0x30(%rsp);	\
    23. 

  23. 	movaps %xmm4, 0x20(%rsp);	\
    24. 

  24. 	movaps %xmm5, 0x10(%rsp)
    25. 

  25. 

  26. #define RESTORE_XMM			\
    27. 

  27. 	movaps 0x60(%rsp), %xmm0;	\
    28. 

  28. 	movaps 0x50(%rsp), %xmm1;	\
    29. 

  29. 	movaps 0x40(%rsp), %xmm2;	\
    30. 

  30. 	movaps 0x30(%rsp), %xmm3;	\
    31. 

  31. 	movaps 0x20(%rsp), %xmm4;	\
    32. 

  32. 	movaps 0x10(%rsp), %xmm5;	\
    33. 

  33. 	mov 0x8(%rsp), %rsi;		\
    34. 

  34. 	mov %rsi, %cr0;			\
    35. 

  35. 	mov (%rsp), %rsp
    36. 

  36. 

  37. ENTRY(efi_call0)
    38. 

  38. 	SAVE_XMM
    39. 

  39. 	subq $32, %rsp
    40. 

  40. 	call *%rdi
    41. 

  41. 	addq $32, %rsp
    42. 

  42. 	RESTORE_XMM
    43. 

  43. 	ret
    44. 

  44. ENDPROC(efi_call0)
    45. 

  45. 

  46. ENTRY(efi_call1)
    47. 

  47. 	SAVE_XMM
    48. 

  48. 	subq $32, %rsp
    49. 

  49. 	mov  %rsi, %rcx
    50. 

  50. 	call *%rdi
    51. 

  51. 	addq $32, %rsp
    52. 

  52. 	RESTORE_XMM
    53. 

  53. 	ret
    54. 

  54. ENDPROC(efi_call1)
    55. 

  55. 

  56. ENTRY(efi_call2)
    57. 

  57. 	SAVE_XMM
    58. 

  58. 	subq $32, %rsp
    59. 

  59. 	mov  %rsi, %rcx
    60. 

  60. 	call *%rdi
    61. 

  61. 	addq $32, %rsp
    62. 

  62. 	RESTORE_XMM
    63. 

  63. 	ret
    64. 

  64. ENDPROC(efi_call2)
    65. 

  65. 

  66. ENTRY(efi_call3)
    67. 

  67. 	SAVE_XMM
    68. 

  68. 	subq $32, %rsp
    69. 

  69. 	mov  %rcx, %r8
    70. 

  70. 	mov  %rsi, %rcx
    71. 

  71. 	call *%rdi
    72. 

  72. 	addq $32, %rsp
    73. 

  73. 	RESTORE_XMM
    74. 

  74. 	ret
    75. 

  75. ENDPROC(efi_call3)
    76. 

  76. 

  77. ENTRY(efi_call4)
    78. 

  78. 	SAVE_XMM
    79. 

  79. 	subq $32, %rsp
    80. 

  80. 	mov %r8, %r9
    81. 

  81. 	mov %rcx, %r8
    82. 

  82. 	mov %rsi, %rcx
    83. 

  83. 	call *%rdi
    84. 

  84. 	addq $32, %rsp
    85. 

  85. 	RESTORE_XMM
    86. 

  86. 	ret
    87. 

  87. ENDPROC(efi_call4)
    88. 

  88. 

  89. ENTRY(efi_call5)
    90. 

  90. 	SAVE_XMM
    91. 

  91. 	subq $48, %rsp
    92. 

  92. 	mov %r9, 32(%rsp)
    93. 

  93. 	mov %r8, %r9
    94. 

  94. 	mov %rcx, %r8
    95. 

  95. 	mov %rsi, %rcx
    96. 

  96. 	call *%rdi
    97. 

  97. 	addq $48, %rsp
    98. 

  98. 	RESTORE_XMM
    99. 

  99. 	ret
    100. 

  100. ENDPROC(efi_call5)
    101. 

  101. 

  102. ENTRY(efi_call6)
    103. 

  103. 	SAVE_XMM
    104. 

  104. 	mov (%rsp), %rax
    105. 

  105. 	mov 8(%rax), %rax
    106. 

  106. 	subq $48, %rsp
    107. 

  107. 	mov %r9, 32(%rsp)
    108. 

  108. 	mov %rax, 40(%rsp)
    109. 

  109. 	mov %r8, %r9
    110. 

  110. 	mov %rcx, %r8
    111. 

  111. 	mov %rsi, %rcx
    112. 

  112. 	call *%rdi
    113. 

  113. 	addq $48, %rsp
    114. 

  114. 	RESTORE_XMM
    115. 

  115. 	ret
    116. 

  116. ENDPROC(efi_call6)
    117.