Diff: source/daplink/cortex_m.h

Revision:

0:01f31e923fe2

diff -r 000000000000 -r 01f31e923fe2 source/daplink/cortex_m.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/source/daplink/cortex_m.h	Tue Apr 07 12:55:42 2020 +0200
@@ -0,0 +1,64 @@
+/**
+ * @file    cortex_m.h
+ * @brief   ARM Cortex-Mx cpu state helper functions
+ *
+ * DAPLink Interface Firmware
+ * Copyright (c) 2009-2016, ARM Limited, All Rights Reserved
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef CORTEX_M_H
+#define CORTEX_M_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "IO_Config.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef int cortex_int_state_t;
+
+__attribute__((always_inline))
+static cortex_int_state_t cortex_int_get_and_disable(void)
+{
+    cortex_int_state_t state;
+    state = __disable_irq();
+    return state;
+}
+
+__attribute__((always_inline))
+static void cortex_int_restore(cortex_int_state_t state)
+{
+    if (!state) {
+        __enable_irq();
+    }
+}
+
+__attribute__((always_inline))
+static bool cortex_in_isr(void)
+{
+    return (__get_xPSR() & 0x1F) != 0;
+}
+
+extern void SystemReset(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif