71 lines
2.6 KiB
C
71 lines
2.6 KiB
C
/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2012 chrysn <chrysn@fsfe.org>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file
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*
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* Definitions for handling vector tables.
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*
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* This implements d0002_efm32_cortex-m3_reference_manual.pdf's figure 2.2
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* (from the EFM32 documentation at
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* http://www.energymicro.com/downloads/datasheets), and was seen analogously
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* in other ARM implementations' libopencm3 files.
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*
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* The structure of the vector table is implemented independently of the system
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* vector table starting at memory position 0x0, as it can be relocated to
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* other memory locations too.
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*
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* The exact size of a vector interrupt table depends on the number of
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* interrupts IRQ_COUNT, which is defined per family.
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*/
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#ifndef LIBOPENCM3_VECTOR_H
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#define LIBOPENCM3_VECTOR_H
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#include <libopencm3/cm3/common.h>
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#include <libopencm3/cm3/nvic.h>
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/** Type of an interrupt function. Only used to avoid hard-to-read function
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* pointers in the efm32_vector_table_t struct. */
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typedef void (*vector_table_entry_t)(void);
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typedef struct {
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unsigned int *initial_sp_value; /**< Initial stack pointer value. */
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vector_table_entry_t reset;
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vector_table_entry_t nmi;
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vector_table_entry_t hard_fault;
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vector_table_entry_t memory_manage_fault; /* not in CM0 */
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vector_table_entry_t bus_fault; /* not in CM0 */
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vector_table_entry_t usage_fault; /* not in CM0 */
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vector_table_entry_t reserved_x001c[4];
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vector_table_entry_t sv_call;
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vector_table_entry_t debug_monitor; /* not in CM0 */
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vector_table_entry_t reserved_x0034;
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vector_table_entry_t pend_sv;
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vector_table_entry_t systick;
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vector_table_entry_t irq[NVIC_IRQ_COUNT];
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/* https://www.feaser.com/openblt/doku.php?id=manual:ports:armcm3_stm32 */
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vector_table_entry_t openblt_signature;
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} vector_table_t;
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/* Common symbols exported by the linker script(s): */
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extern unsigned _data_loadaddr, _data, _edata, _ebss, _stack;
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extern vector_table_t vector_table;
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#endif
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