90 lines
3.0 KiB
C
90 lines
3.0 KiB
C
/* vector_table.c - populated exception vector table */
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/*
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* Copyright (c) 2014 Wind River Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Wind River Systems nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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DESCRIPTION
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Vector table with exceptions filled in. The reset vector is the system entry
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point, ie. the first instruction executed.
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The table is populated with all the system exception handlers. No exception
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should not be triggered until the kernel is ready to handle them.
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We are using a C file instead of an assembly file (like the ARM vector table)
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to work around an issue with the assembler where:
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.word <function>
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statements would end up with the two half-words of the functions' addresses
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swapped.
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*/
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#include <stdint.h>
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#include <toolchain.h>
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#include "vector_table.h"
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struct vector_table {
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uint32_t reset;
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uint32_t memory_error;
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uint32_t instruction_error;
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uint32_t ev_machine_check;
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uint32_t ev_tlb_miss_i;
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uint32_t ev_tlb_miss_d;
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uint32_t ev_prot_v;
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uint32_t ev_privilege_v;
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uint32_t ev_swi;
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uint32_t ev_trap;
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uint32_t ev_extension;
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uint32_t ev_div_zero;
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uint32_t ev_dc_error;
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uint32_t ev_maligned;
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};
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struct vector_table _VectorTable _GENERIC_SECTION(.exc_vector_table) = {
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(uint32_t)__reset,
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(uint32_t)__memory_error,
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(uint32_t)__instruction_error,
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(uint32_t)__ev_machine_check,
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(uint32_t)__ev_tlb_miss_i,
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(uint32_t)__ev_tlb_miss_d,
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(uint32_t)__ev_prot_v,
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(uint32_t)__ev_privilege_v,
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(uint32_t)__ev_swi,
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(uint32_t)__ev_trap,
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(uint32_t)__ev_extension,
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(uint32_t)__ev_div_zero,
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(uint32_t)__ev_dc_error,
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(uint32_t)__ev_maligned,
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};
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extern struct vector_table _VxMicroStart _ALIAS_OF(_VectorTable);
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extern struct vector_table _start _ALIAS_OF(_VectorTable);
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