1 files changed, 58 insertions, 0 deletions

diff --git a/utils/hwstub/stub/asm/arm/atomic_rw.S b/utils/hwstub/stub/asm/arm/atomic_rw.S
new file mode 100644
index 0000000000..cb6272b4dc
--- /dev/null
+++ b/utils/hwstub/stub/asm/arm/atomic_rw.S
@@ -0,0 +1,58 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Copyright (C) 2014 by Marcin Bukat
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+    .section   .text, "ax", %progbits
+    .global    target_read8
+    .type      target_read8, %function
+    .global    target_read16
+    .type      target_read16, %function
+    .global    target_read32
+    .type      target_read32, %function
+    .global    target_write8
+    .type      target_write8, %function
+    .global    target_write16
+    .type      target_write16, %function
+    .global    target_write32
+    .type      target_write32, %function
+
+target_read8:
+    ldrb r0, [r0]
+    bx lr
+
+target_read16:
+    ldrh r0, [r0]
+    bx lr
+
+target_read32:
+    ldr r0, [r0]
+    bx lr
+
+target_write8:
+    strb r1, [r0]
+    bx lr
+
+target_write16:
+    strh r1, [r0]
+    bx lr
+
+target_write32:
+    str r1, [r0]
+    bx lr
+