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126 lines
3.3 KiB
126 lines
3.3 KiB
2 months ago
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/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>,
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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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#include <libopencm3/cm3/scb.h>
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#include <libopencm3/cm3/vector.h>
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/* load optional platform dependent initialization routines */
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#include "../dispatch/vector_chipset.c"
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/* load the weak symbols for IRQ_HANDLERS */
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#include "../dispatch/vector_nvic.c"
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/* Less common symbols exported by the linker script(s): */
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typedef void (*funcp_t) (void);
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extern funcp_t __preinit_array_start, __preinit_array_end;
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extern funcp_t __init_array_start, __init_array_end;
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extern funcp_t __fini_array_start, __fini_array_end;
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int main(void);
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void blocking_handler(void);
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void null_handler(void);
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__attribute__ ((section(".vectors")))
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vector_table_t vector_table = {
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.initial_sp_value = &_stack,
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.reset = reset_handler,
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.nmi = nmi_handler,
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.hard_fault = hard_fault_handler,
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/* Those are defined only on CM3 or CM4 */
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#if defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__)
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.memory_manage_fault = mem_manage_handler,
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.bus_fault = bus_fault_handler,
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.usage_fault = usage_fault_handler,
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.debug_monitor = debug_monitor_handler,
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#endif
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.sv_call = sv_call_handler,
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.pend_sv = pend_sv_handler,
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.systick = sys_tick_handler,
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.irq = {
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IRQ_HANDLERS
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}
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};
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void __attribute__ ((weak)) reset_handler(void)
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{
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volatile unsigned *src, *dest;
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funcp_t *fp;
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for (src = &_data_loadaddr, dest = &_data;
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dest < &_edata;
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src++, dest++) {
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*dest = *src;
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}
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while (dest < &_ebss) {
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*dest++ = 0;
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}
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/* Ensure 8-byte alignment of stack pointer on interrupts */
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/* Enabled by default on most Cortex-M parts, but not M3 r1 */
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SCB_CCR |= SCB_CCR_STKALIGN;
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/* might be provided by platform specific vector.c */
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pre_main();
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/* Constructors. */
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for (fp = &__preinit_array_start; fp < &__preinit_array_end; fp++) {
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(*fp)();
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}
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for (fp = &__init_array_start; fp < &__init_array_end; fp++) {
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(*fp)();
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}
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/* Call the application's entry point. */
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(void)main();
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/* Destructors. */
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for (fp = &__fini_array_start; fp < &__fini_array_end; fp++) {
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(*fp)();
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}
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}
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void blocking_handler(void)
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{
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while (1);
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}
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void null_handler(void)
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{
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/* Do nothing. */
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}
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#pragma weak nmi_handler = null_handler
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#pragma weak hard_fault_handler = blocking_handler
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#pragma weak sv_call_handler = null_handler
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#pragma weak pend_sv_handler = null_handler
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#pragma weak sys_tick_handler = null_handler
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/* Those are defined only on CM3 or CM4 */
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#if defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__)
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#pragma weak mem_manage_handler = blocking_handler
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#pragma weak bus_fault_handler = blocking_handler
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#pragma weak usage_fault_handler = blocking_handler
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#pragma weak debug_monitor_handler = null_handler
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#endif
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