cmd_trace.c 2.8 KB

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  1. /*
  2. * Copyright (c) 2011 The Chromium OS Authors.
  3. *
  4. * SPDX-License-Identifier: GPL-2.0+
  5. */
  6. #include <common.h>
  7. #include <command.h>
  8. #include <trace.h>
  9. #include <asm/io.h>
  10. static int get_args(int argc, char * const argv[], char **buff,
  11. size_t *buff_ptr, size_t *buff_size)
  12. {
  13. if (argc < 2)
  14. return -1;
  15. if (argc < 4) {
  16. *buff_size = getenv_ulong("profsize", 16, 0);
  17. *buff = map_sysmem(getenv_ulong("profbase", 16, 0),
  18. *buff_size);
  19. *buff_ptr = getenv_ulong("profoffset", 16, 0);
  20. } else {
  21. *buff_size = simple_strtoul(argv[3], NULL, 16);
  22. *buff = map_sysmem(simple_strtoul(argv[2], NULL, 16),
  23. *buff_size);
  24. *buff_ptr = 0;
  25. };
  26. return 0;
  27. }
  28. static int create_func_list(int argc, char * const argv[])
  29. {
  30. size_t buff_size, avail, buff_ptr, used;
  31. unsigned int needed;
  32. char *buff;
  33. int err;
  34. if (get_args(argc, argv, &buff, &buff_ptr, &buff_size))
  35. return -1;
  36. avail = buff_size - buff_ptr;
  37. err = trace_list_functions(buff + buff_ptr, avail, &needed);
  38. if (err)
  39. printf("Error: truncated (%#x bytes needed)\n", needed);
  40. used = min(avail, needed);
  41. printf("Function trace dumped to %08lx, size %#zx\n",
  42. (ulong)map_to_sysmem(buff + buff_ptr), used);
  43. setenv_hex("profbase", map_to_sysmem(buff));
  44. setenv_hex("profsize", buff_size);
  45. setenv_hex("profoffset", buff_ptr + used);
  46. return 0;
  47. }
  48. static int create_call_list(int argc, char * const argv[])
  49. {
  50. size_t buff_size, avail, buff_ptr, used;
  51. unsigned int needed;
  52. char *buff;
  53. int err;
  54. if (get_args(argc, argv, &buff, &buff_ptr, &buff_size))
  55. return -1;
  56. avail = buff_size - buff_ptr;
  57. err = trace_list_calls(buff + buff_ptr, avail, &needed);
  58. if (err)
  59. printf("Error: truncated (%#x bytes needed)\n", needed);
  60. used = min(avail, needed);
  61. printf("Call list dumped to %08lx, size %#zx\n",
  62. (ulong)map_to_sysmem(buff + buff_ptr), used);
  63. setenv_hex("profbase", map_to_sysmem(buff));
  64. setenv_hex("profsize", buff_size);
  65. setenv_hex("profoffset", buff_ptr + used);
  66. return 0;
  67. }
  68. int do_trace(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  69. {
  70. const char *cmd = argc < 2 ? NULL : argv[1];
  71. if (!cmd)
  72. return cmd_usage(cmdtp);
  73. switch (*cmd) {
  74. case 'p':
  75. trace_set_enabled(0);
  76. break;
  77. case 'c':
  78. if (create_call_list(argc, argv))
  79. return cmd_usage(cmdtp);
  80. break;
  81. case 'r':
  82. trace_set_enabled(1);
  83. break;
  84. case 'f':
  85. if (create_func_list(argc, argv))
  86. return cmd_usage(cmdtp);
  87. break;
  88. case 's':
  89. trace_print_stats();
  90. break;
  91. default:
  92. return CMD_RET_USAGE;
  93. }
  94. return 0;
  95. }
  96. U_BOOT_CMD(
  97. trace, 4, 1, do_trace,
  98. "trace utility commands",
  99. "stats - display tracing statistics\n"
  100. "trace pause - pause tracing\n"
  101. "trace resume - resume tracing\n"
  102. "trace funclist [<addr> <size>] - dump function list into buffer\n"
  103. "trace calls [<addr> <size>] "
  104. "- dump function call trace into buffer"
  105. );