openocd: src/target: replace the GPL-2.0-or-later license tag

[fw/openocd] / src / target / semihosting_common.c

diff --git a/src/target/semihosting_common.c b/src/target/semihosting_common.c
index d54c341ac90eff2951e56d7a34a7504eee987256..e31ff6fd4a6fde99a3e7ae0af99adc051ab64e01 100644 (file)
--- a/src/target/semihosting_common.c
+++ b/src/target/semihosting_common.c
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
 /***************************************************************************
  *   Copyright (C) 2018 by Liviu Ionescu                                   *
  *   <ilg@livius.net>                                                      *
@@ -10,19 +12,6 @@
  *                                                                         *
  *   Copyright (C) 2016 by Square, Inc.                                    *
  *   Steven Stallion <stallion@squareup.com>                               *
- *                                                                         *
- *   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/>. *
  ***************************************************************************/
 
 /**
@@ -1641,17 +1630,11 @@ static int semihosting_common_fileio_end(struct target *target, int result,
         */
        switch (semihosting->op) {
                case SEMIHOSTING_SYS_WRITE:     /* 0x05 */
+               case SEMIHOSTING_SYS_READ:      /* 0x06 */
                        if (result < 0)
-                               semihosting->result = fileio_info->param_3;
+                               semihosting->result = fileio_info->param_3;  /* Zero bytes read/written. */
                        else
-                               semihosting->result = 0;
-                       break;
-
-               case SEMIHOSTING_SYS_READ:      /* 0x06 */
-                       if (result == (int)fileio_info->param_3)
-                               semihosting->result = 0;
-                       if (result <= 0)
-                               semihosting->result = fileio_info->param_3;
+                               semihosting->result = (int64_t)fileio_info->param_3 - result;
                        break;
 
                case SEMIHOSTING_SYS_SEEK:      /* 0x0a */
@@ -1830,7 +1813,7 @@ COMMAND_HANDLER(handle_common_semihosting_redirect_command)
 {
        struct target *target = get_current_target(CMD_CTX);
 
-       if (target == NULL) {
+       if (!target) {
                LOG_ERROR("No target selected");
                return ERROR_FAIL;
        }