lora-car/libopencm3/lib/cm3/vector.c
Arti Zirk 054740c5de git subrepo clone https://github.com/libopencm3/libopencm3.git
subrepo:
  subdir:   "libopencm3"
  merged:   "88e91c9a7cce"
upstream:
  origin:   "https://github.com/libopencm3/libopencm3.git"
  branch:   "master"
  commit:   "88e91c9a7cce"
git-subrepo:
  version:  "0.4.3"
  origin:   "???"
  commit:   "???"
2023-01-21 21:54:42 +02:00

126 lines
3.3 KiB
C

/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>,
* Copyright (C) 2012 chrysn <chrysn@fsfe.org>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/cm3/scb.h>
#include <libopencm3/cm3/vector.h>
/* load optional platform dependent initialization routines */
#include "../dispatch/vector_chipset.c"
/* load the weak symbols for IRQ_HANDLERS */
#include "../dispatch/vector_nvic.c"
/* Less common symbols exported by the linker script(s): */
typedef void (*funcp_t) (void);
extern funcp_t __preinit_array_start, __preinit_array_end;
extern funcp_t __init_array_start, __init_array_end;
extern funcp_t __fini_array_start, __fini_array_end;
int main(void);
void blocking_handler(void);
void null_handler(void);
__attribute__ ((section(".vectors")))
vector_table_t vector_table = {
.initial_sp_value = &_stack,
.reset = reset_handler,
.nmi = nmi_handler,
.hard_fault = hard_fault_handler,
/* Those are defined only on CM3 or CM4 */
#if defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__)
.memory_manage_fault = mem_manage_handler,
.bus_fault = bus_fault_handler,
.usage_fault = usage_fault_handler,
.debug_monitor = debug_monitor_handler,
#endif
.sv_call = sv_call_handler,
.pend_sv = pend_sv_handler,
.systick = sys_tick_handler,
.irq = {
IRQ_HANDLERS
}
};
void __attribute__ ((weak)) reset_handler(void)
{
volatile unsigned *src, *dest;
funcp_t *fp;
for (src = &_data_loadaddr, dest = &_data;
dest < &_edata;
src++, dest++) {
*dest = *src;
}
while (dest < &_ebss) {
*dest++ = 0;
}
/* Ensure 8-byte alignment of stack pointer on interrupts */
/* Enabled by default on most Cortex-M parts, but not M3 r1 */
SCB_CCR |= SCB_CCR_STKALIGN;
/* might be provided by platform specific vector.c */
pre_main();
/* Constructors. */
for (fp = &__preinit_array_start; fp < &__preinit_array_end; fp++) {
(*fp)();
}
for (fp = &__init_array_start; fp < &__init_array_end; fp++) {
(*fp)();
}
/* Call the application's entry point. */
(void)main();
/* Destructors. */
for (fp = &__fini_array_start; fp < &__fini_array_end; fp++) {
(*fp)();
}
}
void blocking_handler(void)
{
while (1);
}
void null_handler(void)
{
/* Do nothing. */
}
#pragma weak nmi_handler = null_handler
#pragma weak hard_fault_handler = blocking_handler
#pragma weak sv_call_handler = null_handler
#pragma weak pend_sv_handler = null_handler
#pragma weak sys_tick_handler = null_handler
/* Those are defined only on CM3 or CM4 */
#if defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__)
#pragma weak mem_manage_handler = blocking_handler
#pragma weak bus_fault_handler = blocking_handler
#pragma weak usage_fault_handler = blocking_handler
#pragma weak debug_monitor_handler = null_handler
#endif