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// SPDX-License-Identifier: GPL-2.0-or-later
/***************************************************************************
* *
* Copyright (C) ST-Ericsson SA 2011 *
* Author: Michel Jaouen <michel.jaouen@stericsson.com> for ST-Ericsson. *
***************************************************************************/
#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"
/* DEPRECATED: gdb_read_smp_packet/gdb_write_smp_packet to be removed */
/* 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 */
#define DEPRECATED_MSG "DEPRECATED: This method is deprecated in favor of the hwthread pseudo RTOS"
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;
LOG_WARNING(DEPRECATED_MSG);
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;
LOG_WARNING(DEPRECATED_MSG);
/* 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, "%s", target->smp ? "on" : "off");
return ERROR_OK;
}
if (!strcmp(CMD_ARGV[0], "on")) {
foreach_smp_target(head, target->smp_targets)
head->target->smp = 1;
return ERROR_OK;
}
if (!strcmp(CMD_ARGV[0], "off")) {
foreach_smp_target(head, target->smp_targets)
head->target->smp = 0;
/* fixes the target display to the debugger */
if (!list_empty(target->smp_targets))
target->gdb_service->target = target;
return ERROR_OK;
}
return ERROR_COMMAND_SYNTAX_ERROR;
}
COMMAND_HANDLER(handle_smp_gdb_command)
{
struct target *target = get_current_target(CMD_CTX);
int retval = ERROR_OK;
LOG_WARNING(DEPRECATED_MSG);
if (!list_empty(target->smp_targets)) {
if (CMD_ARGC == 1) {
int coreid = 0;
COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], coreid);
if (retval != ERROR_OK)
return retval;
target->gdb_service->core[1] = coreid;
}
command_print(CMD, "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_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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