add IPL

IPL/Customer/Mobis/Gen4_ICUMX_Loader/protect/stack_protect.c

@@ -0,0 +1,86 @@
+/*******************************************************************************
+ * DISCLAIMER
+ * This software is supplied by Renesas Electronics Corporation and is only
+ * intended for use with Renesas products. No other uses are authorized. This
+ * software is owned by Renesas Electronics Corporation and is protected under
+ * all applicable laws, including copyright laws.
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND RENESAS MAKES NO WARRANTIES REGARDING
+ * THIS SOFTWARE, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING BUT NOT
+ * LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
+ * AND NON-INFRINGEMENT. ALL SUCH WARRANTIES ARE EXPRESSLY DISCLAIMED.
+ * TO THE MAXIMUM EXTENT PERMITTED NOT PROHIBITED BY LAW, NEITHER RENESAS
+ * ELECTRONICS CORPORATION NOR ANY OF ITS AFFILIATED COMPANIES SHALL BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR
+ * ANY REASON RELATED TO THIS SOFTWARE, EVEN IF RENESAS OR ITS AFFILIATES HAVE
+ * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ * Renesas reserves the right, without notice, to make changes to this software
+ * and to discontinue the availability of this software. By using this software,
+ * you agree to the additional terms and conditions found by accessing the
+ * following link:
+ * http://www.renesas.com/disclaimer
+ * Copyright 2023 Renesas Electronics Corporation All rights reserved.
+ *******************************************************************************/
+
+/*******************************************************************************
+ * DESCRIPTION   : Stack protect function
+ ******************************************************************************/
+ /******************************************************************************
+ * @file          stack_protect.c
+ * - Version      : 0.01
+ * @brief         Check for Stack Smashing Attacks.
+ * .
+ *****************************************************************************/
+/******************************************************************************
+ * History : DD.MM.YYYY Version  Description
+ *         : 31.01.2023 0.01     First Release
+ *****************************************************************************/
+
+#include <stdint.h>
+#include <log.h>
+
+/* Specify fixed canary value as reference implementation. */
+#define CANARY_VAL              (0xB9DFF6A0U)
+
+#define STACK_PROTECT_ENABLE    (1U)
+
+/* Save canary to __stack_chk_guard. */
+extern uintptr_t __stack_chk_guard;
+__attribute__((section(".canary"))) uintptr_t __stack_chk_guard;
+
+/* Prototype */
+extern void __ghs_set_stack_chk_guard(void);
+#if (STACK_PROTECT == STACK_PROTECT_ENABLE)
+extern void __stack_chk_fail(void);
+static inline uintptr_t *__ghs_get_stack_chk_guard_address(void);
+#endif
+
+void __ghs_set_stack_chk_guard(void)
+{
+#if (STACK_PROTECT == STACK_PROTECT_ENABLE)
+    /* Initialize the stack canary before any code that may require a stack canary. */
+    /* So don't add valiables larger than 8-bytes to this function.                 */
+    /* Don't call function that uses stack canaries from this function.             */
+    /* If customize CANARY_VAL to random value, don't allow the function            */
+    /* to be inlined or this function may require a canary.                         */
+
+    *__ghs_get_stack_chk_guard_address() = (uintptr_t)CANARY_VAL;
+
+#endif
+}
+/* End of function __ghs_set_stack_chk_guard(void) */
+
+#if (STACK_PROTECT == STACK_PROTECT_ENABLE)
+static inline uintptr_t *__ghs_get_stack_chk_guard_address(void)
+{
+    /* Don't modify this function. */
+    return &__stack_chk_guard;
+}
+/* End of function __ghs_get_stack_chk_guard_address(void) */
+
+void __stack_chk_fail(void)
+{
+    ERROR("Stack smashing detected\n");
+    panic;
+}
+/* End of function __stack_chk_fail(void) */
+#endif /* (STACK_PROTECT == STACK_PROTECT_ENABLE) */