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/***************************************************************************
* *
* Copyright (C) ST-Ericsson SA 2011 *
* Author: Michel Jaouen <michel.jaouen@stericsson.com> for ST-Ericsson. *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "server/server.h"
#include "target/target.h"
#include "server/gdb_server.h"
#include "smp.h"
#include "helper/binarybuffer.h"
/* implementation of new packet in gdb interface for smp feature */
/* */
/* j : smp status request */
/* J : smp set request */
/* */
/* jc :read core id displayed by gdb connection */
/* reply XXXXXXXX core id is int32_t , 8 hex digits */
/* */
/* Reply ENN error not supported (target not smp) */
/* */
/* JcXX set core id displayed at next gdb continue */
/* maximum 8 bytes described core id int32_t (8 hex digits) */
/* (core id -1 , reserved for returning to normal continue mode) */
/* Reply ENN error not supported(target not smp,core id out of range) */
/* Reply OK : for success */
/* */
/* handling of this packet within gdb can be done by the creation */
/* internal variable by mean of function allocate_computed_value */
/* set $_core 1 => Jc01 packet is sent */
/* print $_core => jc packet is sent and result is affected in $ */
/* Another way to test this packet is the usage of maintenance packet */
/* maint packet Jc01 */
/* maint packet jc */
/* packet j :smp status request */
int gdb_read_smp_packet(struct connection *connection,
char const *packet, int packet_size)
{
struct target *target = get_target_from_connection(connection);
int retval = ERROR_OK;
if (target->smp) {
if (strncmp(packet, "jc", 2) == 0) {
const uint32_t len = sizeof(target->gdb_service->core[0]);
char hex_buffer[len * 2 + 1];
uint8_t buffer[len];
buf_set_u32(buffer, 0, len * 8, target->gdb_service->core[0]);
size_t pkt_len = hexify(hex_buffer, buffer, sizeof(buffer),
sizeof(hex_buffer));
retval = gdb_put_packet(connection, hex_buffer, pkt_len);
}
} else
retval = gdb_put_packet(connection, "E01", 3);
return retval;
}
/* J : smp set request */
int gdb_write_smp_packet(struct connection *connection,
char const *packet, int packet_size)
{
struct target *target = get_target_from_connection(connection);
char *separator;
int coreid = 0;
int retval = ERROR_OK;
/* skip command character */
if (target->smp) {
if (strncmp(packet, "Jc", 2) == 0) {
packet += 2;
coreid = strtoul(packet, &separator, 16);
target->gdb_service->core[1] = coreid;
retval = gdb_put_packet(connection, "OK", 2);
}
} else
retval = gdb_put_packet(connection, "E01", 3);
return retval;
}
COMMAND_HANDLER(default_handle_smp_command)
{
struct target *target = get_current_target(CMD_CTX);
struct target_list *head;
if (CMD_ARGC > 1)
return ERROR_COMMAND_SYNTAX_ERROR;
if (!CMD_ARGC) {
command_print(CMD_CTX, "%s", target->smp ? "on" : "off");
return ERROR_OK;
}
if (!strcmp(CMD_ARGV[0], "on")) {
foreach_smp_target(head, target->head)
head->target->smp = 1;
return ERROR_OK;
}
if (!strcmp(CMD_ARGV[0], "off")) {
foreach_smp_target(head, target->head)
head->target->smp = 0;
/* fixes the target display to the debugger */
if (target->head)
target->gdb_service->target = target;
return ERROR_OK;
}
return ERROR_COMMAND_SYNTAX_ERROR;
}
COMMAND_HANDLER(deprecated_handle_smp_on_command)
{
const char *argv[] = {"on", NULL};
LOG_WARNING("\'smp_on\' is deprecated, please use \'smp on\' instead.");
CMD_ARGC = 1;
CMD_ARGV = argv;
return CALL_COMMAND_HANDLER(default_handle_smp_command);
}
COMMAND_HANDLER(deprecated_handle_smp_off_command)
{
const char *argv[] = {"off", NULL};
LOG_WARNING("\'smp_off\' is deprecated, please use \'smp off\' instead.");
CMD_ARGC = 1;
CMD_ARGV = argv;
return CALL_COMMAND_HANDLER(default_handle_smp_command);
}
COMMAND_HANDLER(handle_smp_gdb_command)
{
struct target *target = get_current_target(CMD_CTX);
int retval = ERROR_OK;
struct target_list *head;
head = target->head;
if (head != (struct target_list *)NULL) {
if (CMD_ARGC == 1) {
int coreid = 0;
COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], coreid);
if (ERROR_OK != retval)
return retval;
target->gdb_service->core[1] = coreid;
}
command_print(CMD_CTX, "gdb coreid %" PRId32 " -> %" PRId32, target->gdb_service->core[0]
, target->gdb_service->core[1]);
}
return ERROR_OK;
}
const struct command_registration smp_command_handlers[] = {
{
.name = "smp",
.handler = default_handle_smp_command,
.mode = COMMAND_EXEC,
.help = "smp handling",
.usage = "[on|off]",
},
{
.name = "smp_on",
.handler = deprecated_handle_smp_on_command,
.mode = COMMAND_EXEC,
.help = "Restart smp handling",
.usage = "",
},
{
.name = "smp_off",
.handler = deprecated_handle_smp_off_command,
.mode = COMMAND_EXEC,
.help = "Stop smp handling",
.usage = "",
},
{
.name = "smp_gdb",
.handler = handle_smp_gdb_command,
.mode = COMMAND_EXEC,
.help = "display/fix current core played to gdb",
.usage = "",
},
COMMAND_REGISTRATION_DONE
};
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