Import Mbed OS hard-float snapshot

platform/source/mbed_error_hist.c

@@ -0,0 +1,98 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2019 ARM Limited
+ * 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.
+ */
+#include <stdlib.h>
+#include <stdarg.h>
+#include "device.h"
+#include "platform/mbed_error.h"
+#include "platform/mbed_critical.h"
+
+#if MBED_CONF_PLATFORM_ERROR_HIST_ENABLED
+#include "platform/source/mbed_error_hist.h"
+
+static mbed_error_ctx mbed_error_ctx_log[MBED_CONF_PLATFORM_ERROR_HIST_SIZE] = {0};
+static int error_log_count = -1;
+
+mbed_error_status_t mbed_error_hist_put(mbed_error_ctx *error_ctx)
+{
+    //Return error if error_ctx is NULL
+    if (NULL == error_ctx) {
+        return MBED_ERROR_INVALID_ARGUMENT;
+    }
+
+    core_util_critical_section_enter();
+    error_log_count++;
+    memcpy(&mbed_error_ctx_log[error_log_count % MBED_CONF_PLATFORM_ERROR_HIST_SIZE], error_ctx, sizeof(mbed_error_ctx));
+    core_util_critical_section_exit();
+
+    return MBED_SUCCESS;
+}
+
+mbed_error_status_t mbed_error_hist_get(int index, mbed_error_ctx *error_ctx)
+{
+    //Return error if index is more than max log size
+    if (index >= MBED_CONF_PLATFORM_ERROR_HIST_SIZE) {
+        return MBED_ERROR_INVALID_ARGUMENT;
+    }
+
+    core_util_critical_section_enter();
+    //calculate the index where we want to pick the ctx
+    if (error_log_count >= MBED_CONF_PLATFORM_ERROR_HIST_SIZE) {
+        index = (error_log_count + index + 1) % MBED_CONF_PLATFORM_ERROR_HIST_SIZE;
+    }
+    core_util_critical_section_exit();
+    memcpy(error_ctx, &mbed_error_ctx_log[index % MBED_CONF_PLATFORM_ERROR_HIST_SIZE], sizeof(mbed_error_ctx));
+
+    return MBED_SUCCESS;
+}
+
+mbed_error_ctx *mbed_error_hist_get_entry(void)
+{
+    core_util_critical_section_enter();
+    error_log_count++;
+    mbed_error_ctx *ctx = &mbed_error_ctx_log[error_log_count % MBED_CONF_PLATFORM_ERROR_HIST_SIZE];
+    core_util_critical_section_exit();
+
+    return ctx;
+}
+
+mbed_error_status_t mbed_error_hist_get_last_error(mbed_error_ctx *error_ctx)
+{
+    if (-1 == error_log_count) {
+        return MBED_ERROR_ITEM_NOT_FOUND;
+    }
+    core_util_critical_section_enter();
+    memcpy(error_ctx, &mbed_error_ctx_log[error_log_count % MBED_CONF_PLATFORM_ERROR_HIST_SIZE], sizeof(mbed_error_ctx));
+    core_util_critical_section_exit();
+
+    return MBED_SUCCESS;
+}
+
+int mbed_error_hist_get_count()
+{
+    return (error_log_count >= MBED_CONF_PLATFORM_ERROR_HIST_SIZE ? MBED_CONF_PLATFORM_ERROR_HIST_SIZE : error_log_count + 1);
+}
+
+mbed_error_status_t mbed_error_hist_reset()
+{
+    core_util_critical_section_enter();
+    error_log_count = -1;
+    core_util_critical_section_exit();
+
+    return MBED_SUCCESS;
+}
+
+#endif