trace.c 2.9 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 <mapmem.h>
  9. #include <trace.h>
  10. #include <asm/io.h>
  11. static int get_args(int argc, char * const argv[], char **buff,
  12. size_t *buff_ptr, size_t *buff_size)
  13. {
  14. if (argc < 2)
  15. return -1;
  16. if (argc < 4) {
  17. *buff_size = getenv_ulong("profsize", 16, 0);
  18. *buff = map_sysmem(getenv_ulong("profbase", 16, 0),
  19. *buff_size);
  20. *buff_ptr = getenv_ulong("profoffset", 16, 0);
  21. } else {
  22. *buff_size = simple_strtoul(argv[3], NULL, 16);
  23. *buff = map_sysmem(simple_strtoul(argv[2], NULL, 16),
  24. *buff_size);
  25. *buff_ptr = 0;
  26. };
  27. return 0;
  28. }
  29. static int create_func_list(int argc, char * const argv[])
  30. {
  31. size_t buff_size, avail, buff_ptr, used;
  32. unsigned int needed;
  33. char *buff;
  34. int err;
  35. if (get_args(argc, argv, &buff, &buff_ptr, &buff_size))
  36. return -1;
  37. avail = buff_size - buff_ptr;
  38. err = trace_list_functions(buff + buff_ptr, avail, &needed);
  39. if (err)
  40. printf("Error: truncated (%#x bytes needed)\n", needed);
  41. used = min(avail, (size_t)needed);
  42. printf("Function trace dumped to %08lx, size %#zx\n",
  43. (ulong)map_to_sysmem(buff + buff_ptr), used);
  44. setenv_hex("profbase", map_to_sysmem(buff));
  45. setenv_hex("profsize", buff_size);
  46. setenv_hex("profoffset", buff_ptr + used);
  47. return 0;
  48. }
  49. static int create_call_list(int argc, char * const argv[])
  50. {
  51. size_t buff_size, avail, buff_ptr, used;
  52. unsigned int needed;
  53. char *buff;
  54. int err;
  55. if (get_args(argc, argv, &buff, &buff_ptr, &buff_size))
  56. return -1;
  57. avail = buff_size - buff_ptr;
  58. err = trace_list_calls(buff + buff_ptr, avail, &needed);
  59. if (err)
  60. printf("Error: truncated (%#x bytes needed)\n", needed);
  61. used = min(avail, (size_t)needed);
  62. printf("Call list dumped to %08lx, size %#zx\n",
  63. (ulong)map_to_sysmem(buff + buff_ptr), used);
  64. setenv_hex("profbase", map_to_sysmem(buff));
  65. setenv_hex("profsize", buff_size);
  66. setenv_hex("profoffset", buff_ptr + used);
  67. return 0;
  68. }
  69. int do_trace(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  70. {
  71. const char *cmd = argc < 2 ? NULL : argv[1];
  72. if (!cmd)
  73. return cmd_usage(cmdtp);
  74. switch (*cmd) {
  75. case 'p':
  76. trace_set_enabled(0);
  77. break;
  78. case 'c':
  79. if (create_call_list(argc, argv))
  80. return cmd_usage(cmdtp);
  81. break;
  82. case 'r':
  83. trace_set_enabled(1);
  84. break;
  85. case 'f':
  86. if (create_func_list(argc, argv))
  87. return cmd_usage(cmdtp);
  88. break;
  89. case 's':
  90. trace_print_stats();
  91. break;
  92. default:
  93. return CMD_RET_USAGE;
  94. }
  95. return 0;
  96. }
  97. U_BOOT_CMD(
  98. trace, 4, 1, do_trace,
  99. "trace utility commands",
  100. "stats - display tracing statistics\n"
  101. "trace pause - pause tracing\n"
  102. "trace resume - resume tracing\n"
  103. "trace funclist [<addr> <size>] - dump function list into buffer\n"
  104. "trace calls [<addr> <size>] "
  105. "- dump function call trace into buffer"
  106. );