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>
96 lines
2.6 KiB
C
96 lines
2.6 KiB
C
/*
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* Copyright (c) 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 Fatal fault handling
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*
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* This module implements the routines necessary for handling fatal faults on
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* ARCv2 CPUs.
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*/
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#include <kernel_structs.h>
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#include <offsets_short.h>
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#include <toolchain.h>
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#include <arch/cpu.h>
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#ifdef CONFIG_PRINTK
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#include <misc/printk.h>
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#define PR_EXC(...) printk(__VA_ARGS__)
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#else
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#define PR_EXC(...)
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#endif /* CONFIG_PRINTK */
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const NANO_ESF _default_esf = {
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0xdeaddead, /* placeholder */
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};
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/**
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*
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* @brief Nanokernel fatal error handler
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*
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* This routine is called when fatal error conditions are detected by software
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* and is responsible only for reporting the error. Once reported, it then
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* invokes the user provided routine _SysFatalErrorHandler() which is
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* responsible for implementing the error handling policy.
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*
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* The caller is expected to always provide a usable ESF. In the event that the
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* fatal error does not have a hardware generated ESF, the caller should either
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* create its own or use a pointer to the global default ESF <_default_esf>.
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*
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* @return This function does not return.
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*/
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FUNC_NORETURN void _NanoFatalErrorHandler(unsigned int reason,
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const NANO_ESF *pEsf)
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{
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switch (reason) {
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case _NANO_ERR_INVALID_TASK_EXIT:
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PR_EXC("***** Invalid Exit Software Error! *****\n");
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break;
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#if defined(CONFIG_STACK_CANARIES)
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case _NANO_ERR_STACK_CHK_FAIL:
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PR_EXC("***** Stack Check Fail! *****\n");
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break;
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#endif
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case _NANO_ERR_ALLOCATION_FAIL:
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PR_EXC("**** Kernel Allocation Failure! ****\n");
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break;
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default:
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PR_EXC("**** Unknown Fatal Error %d! ****\n", reason);
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break;
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}
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PR_EXC("Current thread ID = %p\n"
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"Faulting instruction address = 0x%lx\n",
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k_current_get(),
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_arc_v2_aux_reg_read(_ARC_V2_ERET));
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/*
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* Now that the error has been reported, call the user implemented
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* policy
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* to respond to the error. The decisions as to what responses are
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* appropriate to the various errors are something the customer must
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* decide.
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*/
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_SysFatalErrorHandler(reason, pEsf);
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for (;;)
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;
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}
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