/** | |
* \file | |
* | |
* \brief GCC start-up implementation for the SAM D20 | |
* | |
* Copyright (c) 2013 Atmel Corporation. All rights reserved. | |
* | |
* \asf_license_start | |
* | |
* \page License | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions are met: | |
* | |
* 1. Redistributions of source code must retain the above copyright notice, | |
* this list of conditions and the following disclaimer. | |
* | |
* 2. Redistributions in binary form must reproduce the above copyright notice, | |
* this list of conditions and the following disclaimer in the documentation | |
* and/or other materials provided with the distribution. | |
* | |
* 3. The name of Atmel may not be used to endorse or promote products derived | |
* from this software without specific prior written permission. | |
* | |
* 4. This software may only be redistributed and used in connection with an | |
* Atmel microcontroller product. | |
* | |
* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED | |
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE | |
* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR | |
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN | |
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
* POSSIBILITY OF SUCH DAMAGE. | |
* | |
* \asf_license_stop | |
* | |
*/ | |
#include "samd20.h" | |
/* Initialize segments */ | |
extern uint32_t _sfixed; | |
extern uint32_t _efixed; | |
extern uint32_t _etext; | |
extern uint32_t _srelocate; | |
extern uint32_t _erelocate; | |
extern uint32_t _szero; | |
extern uint32_t _ezero; | |
extern uint32_t _sstack; | |
extern uint32_t _estack; | |
/** \cond DOXYGEN_SHOULD_SKIP_THIS */ | |
int main(void); | |
/** \endcond */ | |
void __libc_init_array(void); | |
/* Default empty handler */ | |
void Dummy_Handler(void); | |
/* Cortex-M0+ core handlers */ | |
void NMI_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void HardFault_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void SVC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void PendSV_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void SysTick_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
/* Peripherals handlers */ | |
void PM_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void SYSCTRL_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void WDT_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void RTC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void EIC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void NVMCTRL_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void EVSYS_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void SERCOM0_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void SERCOM1_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void SERCOM2_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void SERCOM3_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void SERCOM4_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void SERCOM5_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void TC0_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void TC1_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void TC2_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void TC3_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void TC4_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void TC5_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void TC6_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void TC7_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void ADC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void AC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
void DAC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); | |
/* Exception Table */ | |
__attribute__ ((section(".vectors"))) | |
const DeviceVectors exception_table = { | |
/* Configure Initial Stack Pointer, using linker-generated symbols */ | |
(void*) (&_estack), | |
(void*) Reset_Handler, | |
(void*) NMI_Handler, | |
(void*) HardFault_Handler, | |
(void*) (0UL), /* Reserved */ | |
(void*) (0UL), /* Reserved */ | |
(void*) (0UL), /* Reserved */ | |
(void*) (0UL), /* Reserved */ | |
(void*) (0UL), /* Reserved */ | |
(void*) (0UL), /* Reserved */ | |
(void*) (0UL), /* Reserved */ | |
(void*) SVC_Handler, | |
(void*) (0UL), /* Reserved */ | |
(void*) (0UL), /* Reserved */ | |
(void*) PendSV_Handler, | |
(void*) SysTick_Handler, | |
/* Configurable interrupts */ | |
(void*) PM_Handler, /* 0 Power Manager */ | |
(void*) SYSCTRL_Handler, /* 1 System Control */ | |
(void*) WDT_Handler, /* 2 Watchdog Timer */ | |
(void*) RTC_Handler, /* 3 Real-Time Counter */ | |
(void*) EIC_Handler, /* 4 External Interrupt Controller */ | |
(void*) NVMCTRL_Handler, /* 5 Non-Volatile Memory Controller */ | |
(void*) EVSYS_Handler, /* 6 Event System Interface */ | |
(void*) SERCOM0_Handler, /* 7 Serial Communication Interface 0 */ | |
(void*) SERCOM1_Handler, /* 8 Serial Communication Interface 1 */ | |
(void*) SERCOM2_Handler, /* 9 Serial Communication Interface 2 */ | |
(void*) SERCOM3_Handler, /* 10 Serial Communication Interface 3 */ | |
(void*) SERCOM4_Handler, /* 11 Serial Communication Interface 4 */ | |
(void*) SERCOM5_Handler, /* 12 Serial Communication Interface 5 */ | |
(void*) TC0_Handler, /* 13 Basic Timer Counter 0 */ | |
(void*) TC1_Handler, /* 14 Basic Timer Counter 1 */ | |
(void*) TC2_Handler, /* 15 Basic Timer Counter 2 */ | |
(void*) TC3_Handler, /* 16 Basic Timer Counter 3 */ | |
(void*) TC4_Handler, /* 17 Basic Timer Counter 4 */ | |
(void*) TC5_Handler, /* 18 Basic Timer Counter 5 */ | |
(void*) TC6_Handler, /* 19 Basic Timer Counter 6 */ | |
(void*) TC7_Handler, /* 20 Basic Timer Counter 7 */ | |
(void*) ADC_Handler, /* 21 Analog Digital Converter */ | |
(void*) AC_Handler, /* 22 Analog Comparators */ | |
(void*) DAC_Handler /* 23 Digital Analog Converter */ | |
}; | |
/** | |
* \brief This is the code that gets called on processor reset. | |
* To initialize the device, and call the main() routine. | |
*/ | |
void Reset_Handler(void) | |
{ | |
uint32_t *pSrc, *pDest; | |
/* Initialize the relocate segment */ | |
pSrc = &_etext; | |
pDest = &_srelocate; | |
if (pSrc != pDest) { | |
for (; pDest < &_erelocate;) { | |
*pDest++ = *pSrc++; | |
} | |
} | |
/* Clear the zero segment */ | |
for (pDest = &_szero; pDest < &_ezero;) { | |
*pDest++ = 0; | |
} | |
/* Set the vector table base address */ | |
pSrc = (uint32_t *) & _sfixed; | |
SCB->VTOR = ((uint32_t) pSrc & SCB_VTOR_TBLOFF_Msk); | |
/* Initialize the C library */ | |
__libc_init_array(); | |
/* Branch to main function */ | |
main(); | |
/* Infinite loop */ | |
while (1); | |
} | |
/** | |
* \brief Default interrupt handler for unused IRQs. | |
*/ | |
void Dummy_Handler(void) | |
{ | |
while (1) { | |
} | |
} |