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// SPDX-License-Identifier: GPL-2.0-or-later
/***************************************************************************
* Copyright (C) 2005, 2007 by Dominic Rath *
* Dominic.Rath@gmx.de *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <helper/log.h>
#include "trace.h"
#include "target.h"
int trace_point(struct target *target, uint32_t number)
{
struct trace *trace = target->trace_info;
LOG_DEBUG("tracepoint: %i", (int)number);
if (number < trace->num_trace_points)
trace->trace_points[number].hit_counter++;
if (trace->trace_history_size) {
trace->trace_history[trace->trace_history_pos++] = number;
if (trace->trace_history_pos == trace->trace_history_size) {
trace->trace_history_pos = 0;
trace->trace_history_overflowed = 1;
}
}
return ERROR_OK;
}
COMMAND_HANDLER(handle_trace_point_command)
{
struct target *target = get_current_target(CMD_CTX);
struct trace *trace = target->trace_info;
if (CMD_ARGC == 0) {
uint32_t i;
for (i = 0; i < trace->num_trace_points; i++) {
command_print(CMD, "trace point 0x%8.8" PRIx32 " (%lld times hit)",
trace->trace_points[i].address,
(long long)trace->trace_points[i].hit_counter);
}
return ERROR_OK;
}
if (!strcmp(CMD_ARGV[0], "clear")) {
free(trace->trace_points);
trace->trace_points = NULL;
trace->num_trace_points = 0;
trace->trace_points_size = 0;
return ERROR_OK;
}
/* resize array if necessary */
if (!trace->trace_points || (trace->trace_points_size == trace->num_trace_points)) {
trace->trace_points = realloc(trace->trace_points,
sizeof(struct trace_point) * (trace->trace_points_size + 32));
trace->trace_points_size += 32;
}
uint32_t address;
COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], address);
trace->trace_points[trace->num_trace_points].address = address;
trace->trace_points[trace->num_trace_points].hit_counter = 0;
trace->num_trace_points++;
return ERROR_OK;
}
COMMAND_HANDLER(handle_trace_history_command)
{
struct target *target = get_current_target(CMD_CTX);
struct trace *trace = target->trace_info;
if (CMD_ARGC > 0) {
trace->trace_history_pos = 0;
trace->trace_history_overflowed = 0;
if (!strcmp(CMD_ARGV[0], "clear")) {
/* clearing is implicit, we've just reset position anyway */
return ERROR_OK;
}
free(trace->trace_history);
COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], trace->trace_history_size);
trace->trace_history = malloc(sizeof(uint32_t) * trace->trace_history_size);
command_print(CMD, "new trace history size: %i", (int)(trace->trace_history_size));
} else {
uint32_t i;
uint32_t first = 0;
uint32_t last = trace->trace_history_pos;
if (!trace->trace_history_size) {
command_print(CMD, "trace history buffer is not allocated");
return ERROR_OK;
}
if (trace->trace_history_overflowed) {
first = trace->trace_history_pos;
last = trace->trace_history_pos - 1;
}
for (i = first; (i % trace->trace_history_size) != last; i++) {
if (trace->trace_history[i % trace->trace_history_size] < trace->num_trace_points) {
uint32_t address;
address = trace->trace_points[trace->trace_history[i % trace->trace_history_size]].address;
command_print(CMD, "trace point %i: 0x%8.8" PRIx32 "",
(int)(trace->trace_history[i % trace->trace_history_size]),
address);
} else
command_print(CMD, "trace point %i: -not defined-",
(int)(trace->trace_history[i % trace->trace_history_size]));
}
}
return ERROR_OK;
}
static const struct command_registration trace_exec_command_handlers[] = {
{
.name = "history",
.handler = handle_trace_history_command,
.mode = COMMAND_EXEC,
.help = "display trace history, clear history or set size",
.usage = "['clear'|size]",
},
{
.name = "point",
.handler = handle_trace_point_command,
.mode = COMMAND_EXEC,
.help = "display trace points, clear list of trace points, "
"or add new tracepoint at address",
.usage = "['clear'|address]",
},
COMMAND_REGISTRATION_DONE
};
static const struct command_registration trace_command_handlers[] = {
{
.name = "trace",
.mode = COMMAND_EXEC,
.help = "trace command group",
.usage = "",
.chain = trace_exec_command_handlers,
},
COMMAND_REGISTRATION_DONE
};
int trace_register_commands(struct command_context *cmd_ctx)
{
return register_commands(cmd_ctx, NULL, trace_command_handlers);
}
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