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cmd/trace.c
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d41ce506b Initial Release, ... |
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/* * Copyright (c) 2011 The Chromium OS Authors. * * SPDX-License-Identifier: GPL-2.0+ */ #include <common.h> #include <command.h> #include <mapmem.h> #include <trace.h> #include <asm/io.h> static int get_args(int argc, char * const argv[], char **buff, size_t *buff_ptr, size_t *buff_size) { if (argc < 2) return -1; if (argc < 4) { *buff_size = env_get_ulong("profsize", 16, 0); *buff = map_sysmem(env_get_ulong("profbase", 16, 0), *buff_size); *buff_ptr = env_get_ulong("profoffset", 16, 0); } else { *buff_size = simple_strtoul(argv[3], NULL, 16); *buff = map_sysmem(simple_strtoul(argv[2], NULL, 16), *buff_size); *buff_ptr = 0; }; return 0; } static int create_func_list(int argc, char * const argv[]) { size_t buff_size, avail, buff_ptr, used; unsigned int needed; char *buff; int err; if (get_args(argc, argv, &buff, &buff_ptr, &buff_size)) return -1; avail = buff_size - buff_ptr; err = trace_list_functions(buff + buff_ptr, avail, &needed); if (err) printf("Error: truncated (%#x bytes needed) ", needed); used = min(avail, (size_t)needed); printf("Function trace dumped to %08lx, size %#zx ", (ulong)map_to_sysmem(buff + buff_ptr), used); env_set_hex("profbase", map_to_sysmem(buff)); env_set_hex("profsize", buff_size); env_set_hex("profoffset", buff_ptr + used); return 0; } static int create_call_list(int argc, char * const argv[]) { size_t buff_size, avail, buff_ptr, used; unsigned int needed; char *buff; int err; if (get_args(argc, argv, &buff, &buff_ptr, &buff_size)) return -1; avail = buff_size - buff_ptr; err = trace_list_calls(buff + buff_ptr, avail, &needed); if (err) printf("Error: truncated (%#x bytes needed) ", needed); used = min(avail, (size_t)needed); printf("Call list dumped to %08lx, size %#zx ", (ulong)map_to_sysmem(buff + buff_ptr), used); env_set_hex("profbase", map_to_sysmem(buff)); env_set_hex("profsize", buff_size); env_set_hex("profoffset", buff_ptr + used); return 0; } int do_trace(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { const char *cmd = argc < 2 ? NULL : argv[1]; if (!cmd) return cmd_usage(cmdtp); switch (*cmd) { case 'p': trace_set_enabled(0); break; case 'c': if (create_call_list(argc, argv)) return cmd_usage(cmdtp); break; case 'r': trace_set_enabled(1); break; case 'f': if (create_func_list(argc, argv)) return cmd_usage(cmdtp); break; case 's': trace_print_stats(); break; default: return CMD_RET_USAGE; } return 0; } U_BOOT_CMD( trace, 4, 1, do_trace, "trace utility commands", "stats - display tracing statistics " "trace pause - pause tracing " "trace resume - resume tracing " "trace funclist [<addr> <size>] - dump function list into buffer " "trace calls [<addr> <size>] " "- dump function call trace into buffer" ); |