1*91f16700Schasinglulu /* 2*91f16700Schasinglulu * Copyright (c) 2017, Arm Limited and Contributors. All rights reserved. 3*91f16700Schasinglulu * 4*91f16700Schasinglulu * SPDX-License-Identifier: BSD-3-Clause 5*91f16700Schasinglulu */ 6*91f16700Schasinglulu 7*91f16700Schasinglulu #include <stdint.h> 8*91f16700Schasinglulu 9*91f16700Schasinglulu #include <common/debug.h> 10*91f16700Schasinglulu #include <plat/common/platform.h> 11*91f16700Schasinglulu 12*91f16700Schasinglulu /* 13*91f16700Schasinglulu * Canary value used by the compiler runtime checks to detect stack corruption. 14*91f16700Schasinglulu * 15*91f16700Schasinglulu * Force the canary to be in .data to allow predictable memory layout relatively 16*91f16700Schasinglulu * to the stacks. 17*91f16700Schasinglulu */ 18*91f16700Schasinglulu u_register_t __attribute__((section(".data.stack_protector_canary"))) 19*91f16700Schasinglulu __stack_chk_guard = (u_register_t) 3288484550995823360ULL; 20*91f16700Schasinglulu 21*91f16700Schasinglulu /* 22*91f16700Schasinglulu * Function called when the stack's canary check fails, which means the stack 23*91f16700Schasinglulu * was corrupted. It must not return. 24*91f16700Schasinglulu */ 25*91f16700Schasinglulu void __dead2 __stack_chk_fail(void) 26*91f16700Schasinglulu { 27*91f16700Schasinglulu #if DEBUG 28*91f16700Schasinglulu ERROR("Stack corruption detected\n"); 29*91f16700Schasinglulu #endif 30*91f16700Schasinglulu panic(); 31*91f16700Schasinglulu } 32*91f16700Schasinglulu 33