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perf
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x86
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util
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unwind-libunwind.c

unwind-libunwind.c 1.9 KB
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  1. 

  2. #include <errno.h>
    3. 

  3. #include <libunwind.h>
    4. 

  4. #include "perf_regs.h"
    5. 

  5. #include "../../util/unwind.h"
    6. 

  6. #include "../../util/debug.h"
    7. 

  7. 

  8. #ifdef HAVE_ARCH_X86_64_SUPPORT
    9. 

  9. int libunwind__arch_reg_id(int regnum)
    10. 

  10. {
    11. 

  11. 	int id;
    12. 

  12. 

  13. 	switch (regnum) {
    14. 

  14. 	case UNW_X86_64_RAX:
    15. 

  15. 		id = PERF_REG_X86_AX;
    16. 

  16. 		break;
    17. 

  17. 	case UNW_X86_64_RDX:
    18. 

  18. 		id = PERF_REG_X86_DX;
    19. 

  19. 		break;
    20. 

  20. 	case UNW_X86_64_RCX:
    21. 

  21. 		id = PERF_REG_X86_CX;
    22. 

  22. 		break;
    23. 

  23. 	case UNW_X86_64_RBX:
    24. 

  24. 		id = PERF_REG_X86_BX;
    25. 

  25. 		break;
    26. 

  26. 	case UNW_X86_64_RSI:
    27. 

  27. 		id = PERF_REG_X86_SI;
    28. 

  28. 		break;
    29. 

  29. 	case UNW_X86_64_RDI:
    30. 

  30. 		id = PERF_REG_X86_DI;
    31. 

  31. 		break;
    32. 

  32. 	case UNW_X86_64_RBP:
    33. 

  33. 		id = PERF_REG_X86_BP;
    34. 

  34. 		break;
    35. 

  35. 	case UNW_X86_64_RSP:
    36. 

  36. 		id = PERF_REG_X86_SP;
    37. 

  37. 		break;
    38. 

  38. 	case UNW_X86_64_R8:
    39. 

  39. 		id = PERF_REG_X86_R8;
    40. 

  40. 		break;
    41. 

  41. 	case UNW_X86_64_R9:
    42. 

  42. 		id = PERF_REG_X86_R9;
    43. 

  43. 		break;
    44. 

  44. 	case UNW_X86_64_R10:
    45. 

  45. 		id = PERF_REG_X86_R10;
    46. 

  46. 		break;
    47. 

  47. 	case UNW_X86_64_R11:
    48. 

  48. 		id = PERF_REG_X86_R11;
    49. 

  49. 		break;
    50. 

  50. 	case UNW_X86_64_R12:
    51. 

  51. 		id = PERF_REG_X86_R12;
    52. 

  52. 		break;
    53. 

  53. 	case UNW_X86_64_R13:
    54. 

  54. 		id = PERF_REG_X86_R13;
    55. 

  55. 		break;
    56. 

  56. 	case UNW_X86_64_R14:
    57. 

  57. 		id = PERF_REG_X86_R14;
    58. 

  58. 		break;
    59. 

  59. 	case UNW_X86_64_R15:
    60. 

  60. 		id = PERF_REG_X86_R15;
    61. 

  61. 		break;
    62. 

  62. 	case UNW_X86_64_RIP:
    63. 

  63. 		id = PERF_REG_X86_IP;
    64. 

  64. 		break;
    65. 

  65. 	default:
    66. 

  66. 		pr_err("unwind: invalid reg id %d\n", regnum);
    67. 

  67. 		return -EINVAL;
    68. 

  68. 	}
    69. 

  69. 

  70. 	return id;
    71. 

  71. }
    72. 

  72. #else
    73. 

  73. int libunwind__arch_reg_id(int regnum)
    74. 

  74. {
    75. 

  75. 	int id;
    76. 

  76. 

  77. 	switch (regnum) {
    78. 

  78. 	case UNW_X86_EAX:
    79. 

  79. 		id = PERF_REG_X86_AX;
    80. 

  80. 		break;
    81. 

  81. 	case UNW_X86_EDX:
    82. 

  82. 		id = PERF_REG_X86_DX;
    83. 

  83. 		break;
    84. 

  84. 	case UNW_X86_ECX:
    85. 

  85. 		id = PERF_REG_X86_CX;
    86. 

  86. 		break;
    87. 

  87. 	case UNW_X86_EBX:
    88. 

  88. 		id = PERF_REG_X86_BX;
    89. 

  89. 		break;
    90. 

  90. 	case UNW_X86_ESI:
    91. 

  91. 		id = PERF_REG_X86_SI;
    92. 

  92. 		break;
    93. 

  93. 	case UNW_X86_EDI:
    94. 

  94. 		id = PERF_REG_X86_DI;
    95. 

  95. 		break;
    96. 

  96. 	case UNW_X86_EBP:
    97. 

  97. 		id = PERF_REG_X86_BP;
    98. 

  98. 		break;
    99. 

  99. 	case UNW_X86_ESP:
    100. 

  100. 		id = PERF_REG_X86_SP;
    101. 

  101. 		break;
    102. 

  102. 	case UNW_X86_EIP:
    103. 

  103. 		id = PERF_REG_X86_IP;
    104. 

  104. 		break;
    105. 

  105. 	default:
    106. 

  106. 		pr_err("unwind: invalid reg id %d\n", regnum);
    107. 

  107. 		return -EINVAL;
    108. 

  108. 	}
    109. 

  109. 

  110. 	return id;
    111. 

  111. }
    112. 

  112. #endif /* HAVE_ARCH_X86_64_SUPPORT */
    113.