1 files changed, 92 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/experimental_stack_guard/nrf_stack_guard.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/experimental_stack_guard/nrf_stack_guard.c
new file mode 100644
index 0000000..344da2f
--- /dev/null
+++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/experimental_stack_guard/nrf_stack_guard.c
@@ -0,0 +1,92 @@
+/**
+ * Copyright (c) 2016 - 2018, Nordic Semiconductor ASA
+ * 
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 
+ * 2. Redistributions in binary form, except as embedded into a Nordic
+ *    Semiconductor ASA integrated circuit in a product or a software update for
+ *    such product, must reproduce the above copyright notice, this list of
+ *    conditions and the following disclaimer in the documentation and/or other
+ *    materials provided with the distribution.
+ * 
+ * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ * 
+ * 4. This software, with or without modification, must only be used with a
+ *    Nordic Semiconductor ASA integrated circuit.
+ * 
+ * 5. Any software provided in binary form under this license must not be reverse
+ *    engineered, decompiled, modified and/or disassembled.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ */
+
+#include <stdint.h>
+#include "nrf.h"
+#include "nrf_assert.h"
+#include "nrf_strerror.h"
+#include "nrf_mpu.h"
+#include "nrf_stack_guard.h"
+
+#define NRF_LOG_MODULE_NAME stack_guard
+
+#if NRF_STACK_GUARD_CONFIG_LOG_ENABLED
+#define NRF_LOG_LEVEL       NRF_STACK_GUARD_CONFIG_LOG_LEVEL
+#define NRF_LOG_INFO_COLOR  NRF_STACK_GUARD_CONFIG_INFO_COLOR
+#define NRF_LOG_DEBUG_COLOR NRF_STACK_GUARD_CONFIG_DEBUG_COLOR
+#endif
+#include "nrf_log.h"
+NRF_LOG_MODULE_REGISTER();
+
+#if NRF_STACK_GUARD_ENABLED
+STATIC_ASSERT(STACK_GUARD_SIZE >= 32);
+
+ret_code_t nrf_stack_guard_init(void)
+{
+    nrf_mpu_region_t region;
+    uint32_t attributes;
+    ret_code_t status;
+
+    ASSERT((STACK_GUARD_BASE + STACK_GUARD_SIZE) < (uint32_t)((void *)(STACK_TOP)));
+
+    attributes = (0x05 << MPU_RASR_TEX_Pos) | (1 << MPU_RASR_B_Pos) |   /* Normal memory, WBWA/WBWA */
+                 (0x07 << MPU_RASR_AP_Pos) | (1 << MPU_RASR_XN_Pos);    /* Access: RO/RO, XN */
+
+    status = nrf_mpu_region_create(&region,
+                                   (void *)(STACK_GUARD_BASE),
+                                   STACK_GUARD_SIZE,
+                                   attributes);
+
+    if (status == NRF_SUCCESS)
+    {
+        NRF_LOG_INFO("Stack Guard: 0x%08X-0x%08X (usable stack area: %u bytes)",
+                     STACK_GUARD_BASE,
+                     STACK_GUARD_BASE + STACK_GUARD_SIZE - 1,
+                     REAL_STACK_SIZE);
+    }
+    else
+    {
+        NRF_LOG_ERROR("Cannot create stack guard page! Error: %u [%s]", status, (uint32_t)nrf_strerror_get(status));
+    }
+
+    return status;
+}
+
+#endif /* NRF_STACK_GUARD_ENABLED */