109 lines
4.7 KiB
C
109 lines
4.7 KiB
C
/***************************************************************************
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* *
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* Copyright (C) ST-Ericsson SA 2011 *
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* Author: Michel Jaouen <michel.jaouen@stericsson.com> for ST-Ericsson. *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (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 *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "server/server.h"
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#include "target/target.h"
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#include "server/gdb_server.h"
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#include "smp.h"
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/* implementation of new packet in gdb interface for smp feature */
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/* */
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/* j : smp status request */
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/* J : smp set request */
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/* */
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/* jc :read core id displayed by gdb connection */
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/* reply XXXXXXXX core id is int32_t , 8 hex digits */
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/* */
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/* Reply ENN error not supported (target not smp) */
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/* */
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/* JcXX set core id displayed at next gdb continue */
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/* maximum 8 bytes described core id int32_t (8 hex digits) */
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/* (core id -1 , reserved for returning to normal continue mode) */
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/* Reply ENN error not supported(target not smp,core id out of range) */
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/* Reply OK : for success */
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/* */
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/* handling of this packet within gdb can be done by the creation */
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/* internal variable by mean of function allocate_computed_value */
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/* set $_core 1 => Jc01 packet is sent */
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/* print $_core => jc packet is sent and result is affected in $ */
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/* Another way to test this packet is the usage of maintenance packet */
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/* maint packet Jc01 */
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/* maint packet jc */
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static const char DIGITS[16] = "0123456789abcdef";
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/* packet j :smp status request */
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int gdb_read_smp_packet(struct connection *connection,
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char *packet, int packet_size)
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{
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struct target *target = get_target_from_connection(connection);
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uint32_t len = sizeof(int32_t);
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uint8_t *buffer;
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char *hex_buffer;
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int retval = ERROR_OK;
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if (target->smp) {
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if (strstr(packet, "jc")) {
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hex_buffer = malloc(len * 2 + 1);
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buffer = (uint8_t *)&target->gdb_service->core[0];
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uint32_t i;
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for (i = 0; i < 4; i++) {
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uint8_t t = buffer[i];
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hex_buffer[2 * i] = DIGITS[(t >> 4) & 0xf];
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hex_buffer[2 * i + 1] = DIGITS[t & 0xf];
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}
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retval = gdb_put_packet(connection, hex_buffer, len * 2);
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free(hex_buffer);
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}
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} else
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retval = gdb_put_packet(connection, "E01", 3);
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return retval;
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}
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/* J : smp set request */
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int gdb_write_smp_packet(struct connection *connection,
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char *packet, int packet_size)
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{
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struct target *target = get_target_from_connection(connection);
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char *separator;
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int coreid = 0;
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int retval = ERROR_OK;
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/* skip command character */
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if (target->smp) {
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if (strstr(packet, "Jc")) {
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packet += 2;
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coreid = strtoul(packet, &separator, 16);
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target->gdb_service->core[1] = coreid;
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retval = gdb_put_packet(connection, "OK", 2);
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}
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} else
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retval = gdb_put_packet(connection, "E01", 3);
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return retval;
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}
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