f6ca7de09c
There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
/*
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* Copyright (c) 2012-2014 Wind River Systems, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @file
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* @brief Compiler stack protection (kernel part)
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*
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* This module provides functions to support compiler stack protection
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* using canaries. This feature is enabled with configuration
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* CONFIG_STACK_CANARIES=y.
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*
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* When this feature is enabled, the compiler generated code refers to
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* function __stack_chk_fail and global variable __stack_chk_guard.
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*/
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#include <toolchain.h> /* compiler specific configurations */
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#include <kernel_structs.h>
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#include <toolchain.h>
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#include <sections.h>
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/**
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*
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* @brief Stack canary error handler
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*
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* This function is invoked when a stack canary error is detected.
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*
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* @return Does not return
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*/
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void FUNC_NORETURN _StackCheckHandler(void)
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{
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/* Stack canary error is a software fatal condition; treat it as such.
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*/
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_NanoFatalErrorHandler(_NANO_ERR_STACK_CHK_FAIL, &_default_esf);
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}
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/* Global variable */
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/*
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* Symbol referenced by GCC compiler generated code for canary value.
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* The canary value gets initialized in _Cstart().
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*/
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void __noinit *__stack_chk_guard;
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/**
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*
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* @brief Referenced by GCC compiler generated code
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*
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* This routine is invoked when a stack canary error is detected, indicating
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* a buffer overflow or stack corruption problem.
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*/
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FUNC_ALIAS(_StackCheckHandler, __stack_chk_fail, void);
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