openocd: fix SPDX tag format for files .c

With the old checkpatch we cannot use the correct format for the
SPDX tags in the file .c, in fact the C99 comments are not allowed
and we had to use the block comment.

With the new checkpatch, let's switch to the correct SPDX format.

Change created automatically through the command:
	sed -i \
	's,^/\* *\(SPDX-License-Identifier: .*[^ ]\) *\*/$,// \1,' \
	$(find src/ contrib/ -name \*.c)

Change-Id: I6da16506baa7af718947562505dd49606d124171
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/7153
Tested-by: jenkins

120 files changed, 120 insertions, 120 deletions

diff --git a/src/target/a64_disassembler.c b/src/target/a64_disassembler.c
index 64c7c1d..ca3d3ea 100644
--- a/src/target/a64_disassembler.c
+++ b/src/target/a64_disassembler.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2019 by Mete Balci                                      *
diff --git a/src/target/aarch64.c b/src/target/aarch64.c
index 8b0cf3b..8592daa 100644
--- a/src/target/aarch64.c
+++ b/src/target/aarch64.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2015 by David Ung                                       *
diff --git a/src/target/adi_v5_dapdirect.c b/src/target/adi_v5_dapdirect.c
index dadc8b1..e1c00b7 100644
--- a/src/target/adi_v5_dapdirect.c
+++ b/src/target/adi_v5_dapdirect.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /*
  * Copyright (C) 2019, STMicroelectronics - All Rights Reserved
diff --git a/src/target/adi_v5_jtag.c b/src/target/adi_v5_jtag.c
index a70fad3..eeb796b 100644
--- a/src/target/adi_v5_jtag.c
+++ b/src/target/adi_v5_jtag.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2006 by Magnus Lundin
diff --git a/src/target/adi_v5_swd.c b/src/target/adi_v5_swd.c
index 801917e..979c643 100644
--- a/src/target/adi_v5_swd.c
+++ b/src/target/adi_v5_swd.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *
diff --git a/src/target/algorithm.c b/src/target/algorithm.c
index 4012413..64abffc 100644
--- a/src/target/algorithm.c
+++ b/src/target/algorithm.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath                                    *
diff --git a/src/target/arc.c b/src/target/arc.c
index 2761bfa..9ae3ae6 100644
--- a/src/target/arc.c
+++ b/src/target/arc.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2013-2015,2019-2020 Synopsys, Inc.                      *
diff --git a/src/target/arc_cmd.c b/src/target/arc_cmd.c
index 5b99cff..7a80046 100644
--- a/src/target/arc_cmd.c
+++ b/src/target/arc_cmd.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2013-2015,2019-2020 Synopsys, Inc.                      *
diff --git a/src/target/arc_jtag.c b/src/target/arc_jtag.c
index d949aaa..ddb4f62 100644
--- a/src/target/arc_jtag.c
+++ b/src/target/arc_jtag.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2013-2014,2019-2020 Synopsys, Inc.                      *
diff --git a/src/target/arc_mem.c b/src/target/arc_mem.c
index 0dc3f68..c4814d2 100644
--- a/src/target/arc_mem.c
+++ b/src/target/arc_mem.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2013-2014,2019-2020 Synopsys, Inc.                      *
diff --git a/src/target/arm11.c b/src/target/arm11.c
index 2207a6d..e48bcf3 100644
--- a/src/target/arm11.c
+++ b/src/target/arm11.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2008 digenius technology GmbH.                          *
diff --git a/src/target/arm11_dbgtap.c b/src/target/arm11_dbgtap.c
index 5035d9e..b670bd7 100644
--- a/src/target/arm11_dbgtap.c
+++ b/src/target/arm11_dbgtap.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2008 digenius technology GmbH.                          *
diff --git a/src/target/arm720t.c b/src/target/arm720t.c
index 128a14f..c330dff 100644
--- a/src/target/arm720t.c
+++ b/src/target/arm720t.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath                                    *
diff --git a/src/target/arm7_9_common.c b/src/target/arm7_9_common.c
index 9eed440..8f87d9c 100644
--- a/src/target/arm7_9_common.c
+++ b/src/target/arm7_9_common.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath                                    *
diff --git a/src/target/arm7tdmi.c b/src/target/arm7tdmi.c
index b7094a3..393d3b4 100644
--- a/src/target/arm7tdmi.c
+++ b/src/target/arm7tdmi.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath                                    *
diff --git a/src/target/arm920t.c b/src/target/arm920t.c
index 7b5fa81..f4c3f42 100644
--- a/src/target/arm920t.c
+++ b/src/target/arm920t.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 
 /***************************************************************************
diff --git a/src/target/arm926ejs.c b/src/target/arm926ejs.c
index 9739fc1..807d211 100644
--- a/src/target/arm926ejs.c
+++ b/src/target/arm926ejs.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2007 by Dominic Rath                                    *
diff --git a/src/target/arm946e.c b/src/target/arm946e.c
index 3f8a881..06dab4e 100644
--- a/src/target/arm946e.c
+++ b/src/target/arm946e.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath                                    *
diff --git a/src/target/arm966e.c b/src/target/arm966e.c
index c6eb832..3e60172 100644
--- a/src/target/arm966e.c
+++ b/src/target/arm966e.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath                                    *
diff --git a/src/target/arm9tdmi.c b/src/target/arm9tdmi.c
index f672899..805330f 100644
--- a/src/target/arm9tdmi.c
+++ b/src/target/arm9tdmi.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath                                    *
diff --git a/src/target/arm_adi_v5.c b/src/target/arm_adi_v5.c
index cc5f077..c446428 100644
--- a/src/target/arm_adi_v5.c
+++ b/src/target/arm_adi_v5.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2006 by Magnus Lundin                                   *
diff --git a/src/target/arm_cti.c b/src/target/arm_cti.c
index 4ebdd23..3612874 100644
--- a/src/target/arm_cti.c
+++ b/src/target/arm_cti.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2016 by Matthias Welwarsky                              *
diff --git a/src/target/arm_dap.c b/src/target/arm_dap.c
index ad23e66..e21136d 100644
--- a/src/target/arm_dap.c
+++ b/src/target/arm_dap.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2016 by Matthias Welwarsky                              *
diff --git a/src/target/arm_disassembler.c b/src/target/arm_disassembler.c
index 821be48..749274f 100644
--- a/src/target/arm_disassembler.c
+++ b/src/target/arm_disassembler.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2006 by Dominic Rath                                    *
diff --git a/src/target/arm_dpm.c b/src/target/arm_dpm.c
index b5ce4ee..5f7e929 100644
--- a/src/target/arm_dpm.c
+++ b/src/target/arm_dpm.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /*
  * Copyright (C) 2009 by David Brownell
diff --git a/src/target/arm_jtag.c b/src/target/arm_jtag.c
index 1608462..c1ec473 100644
--- a/src/target/arm_jtag.c
+++ b/src/target/arm_jtag.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath                                    *
diff --git a/src/target/arm_semihosting.c b/src/target/arm_semihosting.c
index 853e20f..b557589 100644
--- a/src/target/arm_semihosting.c
+++ b/src/target/arm_semihosting.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2009 by Marvell Technology Group Ltd.                   *
diff --git a/src/target/arm_simulator.c b/src/target/arm_simulator.c
index 64240c0..058e3d3 100644
--- a/src/target/arm_simulator.c
+++ b/src/target/arm_simulator.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2006 by Dominic Rath                                    *
diff --git a/src/target/arm_tpiu_swo.c b/src/target/arm_tpiu_swo.c
index a9f558e..7096db3 100644
--- a/src/target/arm_tpiu_swo.c
+++ b/src/target/arm_tpiu_swo.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /**
  * @file
diff --git a/src/target/armv4_5.c b/src/target/armv4_5.c
index 66e276f..48af503 100644
--- a/src/target/armv4_5.c
+++ b/src/target/armv4_5.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath                                    *
diff --git a/src/target/armv4_5_cache.c b/src/target/armv4_5_cache.c
index c271c7c..e12c43d 100644
--- a/src/target/armv4_5_cache.c
+++ b/src/target/armv4_5_cache.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath                                    *
diff --git a/src/target/armv4_5_mmu.c b/src/target/armv4_5_mmu.c
index b9bc21a..9942f49 100644
--- a/src/target/armv4_5_mmu.c
+++ b/src/target/armv4_5_mmu.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath                                    *
diff --git a/src/target/armv7a.c b/src/target/armv7a.c
index 9511ed9..82f4be5 100644
--- a/src/target/armv7a.c
+++ b/src/target/armv7a.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *    Copyright (C) 2009 by David Brownell                                 *
diff --git a/src/target/armv7a_cache.c b/src/target/armv7a_cache.c
index 460e334..995a856 100644
--- a/src/target/armv7a_cache.c
+++ b/src/target/armv7a_cache.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2015 by Oleksij Rempel                                  *
diff --git a/src/target/armv7a_cache_l2x.c b/src/target/armv7a_cache_l2x.c
index 4c5dbee..39c503f 100644
--- a/src/target/armv7a_cache_l2x.c
+++ b/src/target/armv7a_cache_l2x.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2015 by Oleksij Rempel                                  *
diff --git a/src/target/armv7a_mmu.c b/src/target/armv7a_mmu.c
index 3f89e14..c4d294e 100644
--- a/src/target/armv7a_mmu.c
+++ b/src/target/armv7a_mmu.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2016 by Matthias Welwarsky                              *
diff --git a/src/target/armv7m.c b/src/target/armv7m.c
index 5d67d51..2db2ce2 100644
--- a/src/target/armv7m.c
+++ b/src/target/armv7m.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath                                    *
diff --git a/src/target/armv7m_trace.c b/src/target/armv7m_trace.c
index b4fd6fd..45117d2 100644
--- a/src/target/armv7m_trace.c
+++ b/src/target/armv7m_trace.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2015  Paul Fertser <fercerpav@gmail.com>                *
diff --git a/src/target/armv8.c b/src/target/armv8.c
index 0da6c05..de0bddb 100644
--- a/src/target/armv8.c
+++ b/src/target/armv8.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2015 by David Ung                                       *
diff --git a/src/target/armv8_cache.c b/src/target/armv8_cache.c
index b24ef62..cf71119 100644
--- a/src/target/armv8_cache.c
+++ b/src/target/armv8_cache.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2016 by Matthias Welwarsky                              *
diff --git a/src/target/armv8_dpm.c b/src/target/armv8_dpm.c
index 3ea8fa9..f40beb8 100644
--- a/src/target/armv8_dpm.c
+++ b/src/target/armv8_dpm.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /*
  * Copyright (C) 2009 by David Brownell
diff --git a/src/target/armv8_opcodes.c b/src/target/armv8_opcodes.c
index b62b8a2..7afcc52 100644
--- a/src/target/armv8_opcodes.c
+++ b/src/target/armv8_opcodes.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /*
  * Copyright (C) 2015 by Matthias Welwarsky <matthias.welwarsky@sysgo.com>
diff --git a/src/target/avr32_ap7k.c b/src/target/avr32_ap7k.c
index 14c4d08..bf1445b 100644
--- a/src/target/avr32_ap7k.c
+++ b/src/target/avr32_ap7k.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2010 by Oleksandr Tymoshenko <gonzo@bluezbox.com>       *
diff --git a/src/target/avr32_jtag.c b/src/target/avr32_jtag.c
index 6f46b00..a9c4f8d 100644
--- a/src/target/avr32_jtag.c
+++ b/src/target/avr32_jtag.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2010 by Oleksandr Tymoshenko <gonzo@bluezbox.com>       *
diff --git a/src/target/avr32_mem.c b/src/target/avr32_mem.c
index 045cf87..835a501 100644
--- a/src/target/avr32_mem.c
+++ b/src/target/avr32_mem.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2010 by Oleksandr Tymoshenko <gonzo@bluezbox.com>       *
diff --git a/src/target/avr32_regs.c b/src/target/avr32_regs.c
index be30789..d6fd0e0 100644
--- a/src/target/avr32_regs.c
+++ b/src/target/avr32_regs.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2010 by Oleksandr Tymoshenko <gonzo@bluezbox.com>       *
diff --git a/src/target/avrt.c b/src/target/avrt.c
index 3356865..61bef32 100644
--- a/src/target/avrt.c
+++ b/src/target/avrt.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2009 by Simon Qian                                      *
diff --git a/src/target/breakpoints.c b/src/target/breakpoints.c
index 2653cbd..bbaff4e 100644
--- a/src/target/breakpoints.c
+++ b/src/target/breakpoints.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath                                    *
diff --git a/src/target/cortex_a.c b/src/target/cortex_a.c
index 2e81d14..7286a30 100644
--- a/src/target/cortex_a.c
+++ b/src/target/cortex_a.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath                                    *
diff --git a/src/target/cortex_m.c b/src/target/cortex_m.c
index d0c6376..23d9065 100644
--- a/src/target/cortex_m.c
+++ b/src/target/cortex_m.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath                                    *
diff --git a/src/target/dsp563xx.c b/src/target/dsp563xx.c
index b572ce5..3702cfb 100644
--- a/src/target/dsp563xx.c
+++ b/src/target/dsp563xx.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2009-2011 by Mathias Kuester                            *
diff --git a/src/target/dsp563xx_once.c b/src/target/dsp563xx_once.c
index b195582..2244506 100644
--- a/src/target/dsp563xx_once.c
+++ b/src/target/dsp563xx_once.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2009 by Mathias Kuester                                 *
diff --git a/src/target/dsp5680xx.c b/src/target/dsp5680xx.c
index 9a6e8db..37cf059 100644
--- a/src/target/dsp5680xx.c
+++ b/src/target/dsp5680xx.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *  Copyright (C) 2011 by Rodrigo L. Rosa                                 *
diff --git a/src/target/embeddedice.c b/src/target/embeddedice.c
index 9bfee81..7aef153 100644
--- a/src/target/embeddedice.c
+++ b/src/target/embeddedice.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath                                    *
diff --git a/src/target/esirisc.c b/src/target/esirisc.c
index 6121648..f86d28d 100644
--- a/src/target/esirisc.c
+++ b/src/target/esirisc.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2018 by Square, Inc.                                    *
diff --git a/src/target/esirisc_jtag.c b/src/target/esirisc_jtag.c
index 4c54c24..54abc40 100644
--- a/src/target/esirisc_jtag.c
+++ b/src/target/esirisc_jtag.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2018 by Square, Inc.                                    *
diff --git a/src/target/esirisc_trace.c b/src/target/esirisc_trace.c
index 2f183cf..376ea1d 100644
--- a/src/target/esirisc_trace.c
+++ b/src/target/esirisc_trace.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2018 by Square, Inc.                                    *
diff --git a/src/target/espressif/esp32.c b/src/target/espressif/esp32.c
index 9f36ca5..63055cf 100644
--- a/src/target/espressif/esp32.c
+++ b/src/target/espressif/esp32.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   ESP32 target API for OpenOCD                                          *
diff --git a/src/target/espressif/esp32s2.c b/src/target/espressif/esp32s2.c
index 089534c..62d1ddb 100644
--- a/src/target/espressif/esp32s2.c
+++ b/src/target/espressif/esp32s2.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   ESP32-S2 target for OpenOCD                                           *
diff --git a/src/target/espressif/esp32s3.c b/src/target/espressif/esp32s3.c
index 5826795..62b22b1 100644
--- a/src/target/espressif/esp32s3.c
+++ b/src/target/espressif/esp32s3.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   ESP32-S3 target API for OpenOCD                                       *
diff --git a/src/target/espressif/esp_semihosting.c b/src/target/espressif/esp_semihosting.c
index f9e8b02..5e9cb94 100644
--- a/src/target/espressif/esp_semihosting.c
+++ b/src/target/espressif/esp_semihosting.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Semihosting API for Espressif chips                                   *
diff --git a/src/target/espressif/esp_xtensa.c b/src/target/espressif/esp_xtensa.c
index 6a1b72e..fcc340c 100644
--- a/src/target/espressif/esp_xtensa.c
+++ b/src/target/espressif/esp_xtensa.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Espressif Xtensa target API for OpenOCD                               *
diff --git a/src/target/espressif/esp_xtensa_semihosting.c b/src/target/espressif/esp_xtensa_semihosting.c
index 9ea8e4d..54e9c4b 100644
--- a/src/target/espressif/esp_xtensa_semihosting.c
+++ b/src/target/espressif/esp_xtensa_semihosting.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (c) 2020 Espressif Systems (Shanghai) Co. Ltd.              *
diff --git a/src/target/espressif/esp_xtensa_smp.c b/src/target/espressif/esp_xtensa_smp.c
index 235a86e..1d03774 100644
--- a/src/target/espressif/esp_xtensa_smp.c
+++ b/src/target/espressif/esp_xtensa_smp.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   ESP Xtensa SMP target API for OpenOCD                                 *
diff --git a/src/target/etb.c b/src/target/etb.c
index 5247cf0..3b9004b 100644
--- a/src/target/etb.c
+++ b/src/target/etb.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2007 by Dominic Rath                                    *
diff --git a/src/target/etm.c b/src/target/etm.c
index 74cf1b0..57417c3 100644
--- a/src/target/etm.c
+++ b/src/target/etm.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath                                    *
diff --git a/src/target/etm_dummy.c b/src/target/etm_dummy.c
index 8245da6..8deccf5 100644
--- a/src/target/etm_dummy.c
+++ b/src/target/etm_dummy.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2007 by Dominic Rath                                    *
diff --git a/src/target/fa526.c b/src/target/fa526.c
index 5b38d3c..38b7ab2 100644
--- a/src/target/fa526.c
+++ b/src/target/fa526.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2009 by Paulius Zaleckas                                *
diff --git a/src/target/feroceon.c b/src/target/feroceon.c
index fe50327..1e7eb09 100644
--- a/src/target/feroceon.c
+++ b/src/target/feroceon.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2008-2009 by Marvell Semiconductors, Inc.                    *
diff --git a/src/target/hla_target.c b/src/target/hla_target.c
index d3a16cd..33126d6 100644
--- a/src/target/hla_target.c
+++ b/src/target/hla_target.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2011 by Mathias Kuester                                 *
diff --git a/src/target/image.c b/src/target/image.c
index 6e5010e..f8de7a2 100644
--- a/src/target/image.c
+++ b/src/target/image.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2007 by Dominic Rath                                    *
diff --git a/src/target/lakemont.c b/src/target/lakemont.c
index 64da29c..5035cdb 100644
--- a/src/target/lakemont.c
+++ b/src/target/lakemont.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /*
  * Copyright(c) 2013-2016 Intel Corporation.
diff --git a/src/target/ls1_sap.c b/src/target/ls1_sap.c
index 0e2f14e..9bd00c0 100644
--- a/src/target/ls1_sap.c
+++ b/src/target/ls1_sap.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /*
  * Copyright (C) 2015 by Esben Haabendal <eha@deif.com>
diff --git a/src/target/mem_ap.c b/src/target/mem_ap.c
index 08a1883..a662506 100644
--- a/src/target/mem_ap.c
+++ b/src/target/mem_ap.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /*
  * Copyright (C) 2016 by Matthias Welwarsky <matthias.welwarsky@sysgo.com>
diff --git a/src/target/mips32.c b/src/target/mips32.c
index c89fb09..f593b5f 100644
--- a/src/target/mips32.c
+++ b/src/target/mips32.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2008 by Spencer Oliver                                  *
diff --git a/src/target/mips32_dmaacc.c b/src/target/mips32_dmaacc.c
index 8c48754..beffbf5 100644
--- a/src/target/mips32_dmaacc.c
+++ b/src/target/mips32_dmaacc.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2008 by John McCarthy                                   *
diff --git a/src/target/mips32_pracc.c b/src/target/mips32_pracc.c
index 9f5840e..c4704b5 100644
--- a/src/target/mips32_pracc.c
+++ b/src/target/mips32_pracc.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2008 by Spencer Oliver                                  *
diff --git a/src/target/mips64.c b/src/target/mips64.c
index f9f54c2..773b92d 100644
--- a/src/target/mips64.c
+++ b/src/target/mips64.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /*
  * Support for processors implementing MIPS64 instruction set
diff --git a/src/target/mips64_pracc.c b/src/target/mips64_pracc.c
index ee0d74d..b083f5c 100644
--- a/src/target/mips64_pracc.c
+++ b/src/target/mips64_pracc.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /*
  * Support for processors implementing MIPS64 instruction set
diff --git a/src/target/mips_ejtag.c b/src/target/mips_ejtag.c
index a440bc4..a1a1792 100644
--- a/src/target/mips_ejtag.c
+++ b/src/target/mips_ejtag.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2008 by Spencer Oliver                                  *
diff --git a/src/target/mips_m4k.c b/src/target/mips_m4k.c
index 2475702..e85018c 100644
--- a/src/target/mips_m4k.c
+++ b/src/target/mips_m4k.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2008 by Spencer Oliver                                  *
diff --git a/src/target/mips_mips64.c b/src/target/mips_mips64.c
index d05b55c..640b4c8 100644
--- a/src/target/mips_mips64.c
+++ b/src/target/mips_mips64.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /*
  * MIPS64 generic target support
diff --git a/src/target/nds32.c b/src/target/nds32.c
index b15a7dd..bd30976 100644
--- a/src/target/nds32.c
+++ b/src/target/nds32.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2013 Andes Technology                                   *
diff --git a/src/target/nds32_aice.c b/src/target/nds32_aice.c
index 9d88adf..8dc4d77 100644
--- a/src/target/nds32_aice.c
+++ b/src/target/nds32_aice.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2013 Andes technology.                                  *
diff --git a/src/target/nds32_cmd.c b/src/target/nds32_cmd.c
index 0e24009..37f7648 100644
--- a/src/target/nds32_cmd.c
+++ b/src/target/nds32_cmd.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2013 Andes Technology                                   *
diff --git a/src/target/nds32_disassembler.c b/src/target/nds32_disassembler.c
index 7cdf3a7..eebbfe1 100644
--- a/src/target/nds32_disassembler.c
+++ b/src/target/nds32_disassembler.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2013 Andes Technology                                   *
diff --git a/src/target/nds32_reg.c b/src/target/nds32_reg.c
index d7b32e7..1687e69 100644
--- a/src/target/nds32_reg.c
+++ b/src/target/nds32_reg.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2013 Andes Technology                                   *
diff --git a/src/target/nds32_tlb.c b/src/target/nds32_tlb.c
index 82123a3..a533e59 100644
--- a/src/target/nds32_tlb.c
+++ b/src/target/nds32_tlb.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2013 Andes Technology                                   *
diff --git a/src/target/nds32_v2.c b/src/target/nds32_v2.c
index 48cf65f..2149291 100644
--- a/src/target/nds32_v2.c
+++ b/src/target/nds32_v2.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2013 Andes Technology                                   *
diff --git a/src/target/nds32_v3.c b/src/target/nds32_v3.c
index a27c1cc..9d02e5a 100644
--- a/src/target/nds32_v3.c
+++ b/src/target/nds32_v3.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2013 Andes Technology                                   *
diff --git a/src/target/nds32_v3_common.c b/src/target/nds32_v3_common.c
index 50c7582..f2efab4 100644
--- a/src/target/nds32_v3_common.c
+++ b/src/target/nds32_v3_common.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2013 Andes Technology                                   *
diff --git a/src/target/nds32_v3m.c b/src/target/nds32_v3m.c
index 4ea1d38..6bc549f 100644
--- a/src/target/nds32_v3m.c
+++ b/src/target/nds32_v3m.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2013 Andes Technology                                   *
diff --git a/src/target/openrisc/jsp_server.c b/src/target/openrisc/jsp_server.c
index 50bef5e..185a506 100644
--- a/src/target/openrisc/jsp_server.c
+++ b/src/target/openrisc/jsp_server.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2014 by Franck Jullien                                  *
diff --git a/src/target/openrisc/or1k.c b/src/target/openrisc/or1k.c
index 06367ff..d73bca2 100644
--- a/src/target/openrisc/or1k.c
+++ b/src/target/openrisc/or1k.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2011 by Julius Baxter                                   *
diff --git a/src/target/openrisc/or1k_du_adv.c b/src/target/openrisc/or1k_du_adv.c
index 3d20496..cfb7d0e 100644
--- a/src/target/openrisc/or1k_du_adv.c
+++ b/src/target/openrisc/or1k_du_adv.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2013-2014 by Franck Jullien                             *
diff --git a/src/target/openrisc/or1k_tap_mohor.c b/src/target/openrisc/or1k_tap_mohor.c
index 4d9e158..0dedb3e 100644
--- a/src/target/openrisc/or1k_tap_mohor.c
+++ b/src/target/openrisc/or1k_tap_mohor.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2013 by Franck Jullien                                  *
diff --git a/src/target/openrisc/or1k_tap_vjtag.c b/src/target/openrisc/or1k_tap_vjtag.c
index 4b16e97..783b4db 100644
--- a/src/target/openrisc/or1k_tap_vjtag.c
+++ b/src/target/openrisc/or1k_tap_vjtag.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2013 by Franck Jullien                                  *
diff --git a/src/target/openrisc/or1k_tap_xilinx_bscan.c b/src/target/openrisc/or1k_tap_xilinx_bscan.c
index ec66b77..6b3df0e 100644
--- a/src/target/openrisc/or1k_tap_xilinx_bscan.c
+++ b/src/target/openrisc/or1k_tap_xilinx_bscan.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2013 by Sergio Chico                                    *
diff --git a/src/target/quark_d20xx.c b/src/target/quark_d20xx.c
index 70d6c61..d63a42a 100644
--- a/src/target/quark_d20xx.c
+++ b/src/target/quark_d20xx.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /*
  * Copyright(c) 2015-2016 Intel Corporation.
diff --git a/src/target/quark_x10xx.c b/src/target/quark_x10xx.c
index 5cfdb00..0daa642 100644
--- a/src/target/quark_x10xx.c
+++ b/src/target/quark_x10xx.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /*
  * Copyright(c) 2013-2016 Intel Corporation.
diff --git a/src/target/register.c b/src/target/register.c
index f05e58a..2287125 100644
--- a/src/target/register.c
+++ b/src/target/register.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath                                    *
diff --git a/src/target/riscv/batch.c b/src/target/riscv/batch.c
index a3d68a9..8ec043e 100644
--- a/src/target/riscv/batch.c
+++ b/src/target/riscv/batch.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
diff --git a/src/target/riscv/program.c b/src/target/riscv/program.c
index 8e2ce5d..0976539 100644
--- a/src/target/riscv/program.c
+++ b/src/target/riscv/program.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
diff --git a/src/target/riscv/riscv-011.c b/src/target/riscv/riscv-011.c
index 79d9526..be296cd 100644
--- a/src/target/riscv/riscv-011.c
+++ b/src/target/riscv/riscv-011.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /*
  * Support for RISC-V, debug version 0.11. This was never an officially adopted
diff --git a/src/target/riscv/riscv-013.c b/src/target/riscv/riscv-013.c
index d513df7..2c762e3 100644
--- a/src/target/riscv/riscv-013.c
+++ b/src/target/riscv/riscv-013.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /*
  * Support for RISC-V, debug version 0.13, which is currently (2/4/17) the
diff --git a/src/target/riscv/riscv.c b/src/target/riscv/riscv.c
index bee4876..dde3d7e 100644
--- a/src/target/riscv/riscv.c
+++ b/src/target/riscv/riscv.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 #include <assert.h>
 #include <stdlib.h>
diff --git a/src/target/riscv/riscv_semihosting.c b/src/target/riscv/riscv_semihosting.c
index 03de97c..1bc4e1a 100644
--- a/src/target/riscv/riscv_semihosting.c
+++ b/src/target/riscv/riscv_semihosting.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2018 by Liviu Ionescu                                   *
diff --git a/src/target/rtt.c b/src/target/rtt.c
index 671650c..ef2c45d 100644
--- a/src/target/rtt.c
+++ b/src/target/rtt.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /*
  * Copyright (C) 2016-2020 by Marc Schink <dev@zapb.de>
diff --git a/src/target/semihosting_common.c b/src/target/semihosting_common.c
index bdf29a4..dc0dae2 100644
--- a/src/target/semihosting_common.c
+++ b/src/target/semihosting_common.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2018 by Liviu Ionescu                                   *
diff --git a/src/target/smp.c b/src/target/smp.c
index b28d546..effc63f 100644
--- a/src/target/smp.c
+++ b/src/target/smp.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *                                                                         *
diff --git a/src/target/stm8.c b/src/target/stm8.c
index d5731a2..aa934c9 100644
--- a/src/target/stm8.c
+++ b/src/target/stm8.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /*
 *   OpenOCD STM8 target driver
diff --git a/src/target/target.c b/src/target/target.c
index 97ea13d..794ee2f 100644
--- a/src/target/target.c
+++ b/src/target/target.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath                                    *
diff --git a/src/target/target_request.c b/src/target/target_request.c
index f3bcd2e..72c8421 100644
--- a/src/target/target_request.c
+++ b/src/target/target_request.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2007 by Dominic Rath                                    *
diff --git a/src/target/testee.c b/src/target/testee.c
index b94240f..6875652 100644
--- a/src/target/testee.c
+++ b/src/target/testee.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2009 Zachary T Welch <zw@superlucidity.net>             *
diff --git a/src/target/trace.c b/src/target/trace.c
index c325dcc..333a787 100644
--- a/src/target/trace.c
+++ b/src/target/trace.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2005, 2007 by Dominic Rath                              *
diff --git a/src/target/x86_32_common.c b/src/target/x86_32_common.c
index 6d3909c..ecaf52b 100644
--- a/src/target/x86_32_common.c
+++ b/src/target/x86_32_common.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /*
  * Copyright(c) 2013 Intel Corporation.
diff --git a/src/target/xscale.c b/src/target/xscale.c
index 4927d00..066ff8c 100644
--- a/src/target/xscale.c
+++ b/src/target/xscale.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Copyright (C) 2006, 2007 by Dominic Rath                              *
diff --git a/src/target/xtensa/xtensa.c b/src/target/xtensa/xtensa.c
index d3be8b4..1691dee 100644
--- a/src/target/xtensa/xtensa.c
+++ b/src/target/xtensa/xtensa.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Generic Xtensa target API for OpenOCD                                 *
diff --git a/src/target/xtensa/xtensa_chip.c b/src/target/xtensa/xtensa_chip.c
index 6e19313..c62992f 100644
--- a/src/target/xtensa/xtensa_chip.c
+++ b/src/target/xtensa/xtensa_chip.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Xtensa Chip-level Target Support for OpenOCD                          *
diff --git a/src/target/xtensa/xtensa_debug_module.c b/src/target/xtensa/xtensa_debug_module.c
index 4f33c08..31d7a94 100644
--- a/src/target/xtensa/xtensa_debug_module.c
+++ b/src/target/xtensa/xtensa_debug_module.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 /***************************************************************************
  *   Xtensa Debug Module (XDM) Support for OpenOCD                         *