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cabcbb56c8
Add a trace command with sub-commands to start/stop tracing, print out statistics and dump trace information to memory for later upload to a host. Signed-off-by: Simon Glass <sjg@chromium.org>
134 lines
3.5 KiB
C
134 lines
3.5 KiB
C
/*
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* Copyright (c) 2011 The Chromium OS Authors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <command.h>
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#include <trace.h>
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#include <asm/io.h>
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static int get_args(int argc, char * const argv[], char **buff,
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size_t *buff_ptr, size_t *buff_size)
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{
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if (argc < 2)
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return -1;
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if (argc < 4) {
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*buff_size = getenv_ulong("profsize", 16, 0);
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*buff = map_sysmem(getenv_ulong("profbase", 16, 0),
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*buff_size);
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*buff_ptr = getenv_ulong("profoffset", 16, 0);
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} else {
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*buff_size = simple_strtoul(argv[3], NULL, 16);
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*buff = map_sysmem(simple_strtoul(argv[2], NULL, 16),
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*buff_size);
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*buff_ptr = 0;
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};
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return 0;
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}
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static int create_func_list(int argc, char * const argv[])
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{
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size_t buff_size, avail, buff_ptr, used;
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unsigned int needed;
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char *buff;
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int err;
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if (get_args(argc, argv, &buff, &buff_ptr, &buff_size))
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return -1;
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avail = buff_size - buff_ptr;
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err = trace_list_functions(buff + buff_ptr, avail, &needed);
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if (err)
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printf("Error: truncated (%#x bytes needed)\n", needed);
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used = min(avail, needed);
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printf("Function trace dumped to %08lx, size %#zx\n",
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(ulong)map_to_sysmem(buff + buff_ptr), used);
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setenv_hex("profbase", map_to_sysmem(buff));
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setenv_hex("profsize", buff_size);
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setenv_hex("profoffset", buff_ptr + used);
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return 0;
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}
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static int create_call_list(int argc, char * const argv[])
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{
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size_t buff_size, avail, buff_ptr, used;
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unsigned int needed;
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char *buff;
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int err;
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if (get_args(argc, argv, &buff, &buff_ptr, &buff_size))
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return -1;
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avail = buff_size - buff_ptr;
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err = trace_list_calls(buff + buff_ptr, avail, &needed);
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if (err)
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printf("Error: truncated (%#x bytes needed)\n", needed);
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used = min(avail, needed);
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printf("Call list dumped to %08lx, size %#zx\n",
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(ulong)map_to_sysmem(buff + buff_ptr), used);
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setenv_hex("profbase", map_to_sysmem(buff));
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setenv_hex("profsize", buff_size);
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setenv_hex("profoffset", buff_ptr + used);
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return 0;
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}
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int do_trace(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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const char *cmd = argc < 2 ? NULL : argv[1];
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if (!cmd)
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return cmd_usage(cmdtp);
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switch (*cmd) {
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case 'p':
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trace_set_enabled(0);
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break;
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case 'c':
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if (create_call_list(argc, argv))
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return cmd_usage(cmdtp);
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break;
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case 'r':
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trace_set_enabled(1);
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break;
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case 'f':
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if (create_func_list(argc, argv))
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return cmd_usage(cmdtp);
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break;
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case 's':
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trace_print_stats();
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break;
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default:
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return CMD_RET_USAGE;
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}
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return 0;
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}
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U_BOOT_CMD(
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trace, 4, 1, do_trace,
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"trace utility commands",
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"stats - display tracing statistics\n"
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"trace pause - pause tracing\n"
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"trace resume - resume tracing\n"
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"trace funclist [<addr> <size>] - dump function list into buffer\n"
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"trace calls [<addr> <size>] "
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"- dump function call trace into buffer"
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);
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