[136] | 1 | /**
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| 2 | * \file
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| 3 | *
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| 4 | * \brief gcc starttup file for SAMD21
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| 5 | *
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| 6 | * Copyright (c) 2014 Atmel Corporation. All rights reserved.
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| 7 | *
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| 8 | * \asf_license_start
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| 9 | *
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| 10 | * \page License
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| 11 | *
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| 12 | * Redistribution and use in source and binary forms, with or without
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| 13 | * modification, are permitted provided that the following conditions are met:
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| 14 | *
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| 15 | * 1. Redistributions of source code must retain the above copyright notice,
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| 16 | * this list of conditions and the following disclaimer.
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| 17 | *
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| 18 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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| 19 | * this list of conditions and the following disclaimer in the documentation
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| 20 | * and/or other materials provided with the distribution.
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| 21 | *
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| 22 | * 3. The name of Atmel may not be used to endorse or promote products derived
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| 23 | * from this software without specific prior written permission.
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| 24 | *
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| 25 | * 4. This software may only be redistributed and used in connection with an
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| 26 | * Atmel microcontroller product.
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| 27 | *
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| 28 | * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
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| 29 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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| 30 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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| 31 | * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
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| 32 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 33 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 34 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 35 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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| 36 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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| 37 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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| 38 | * POSSIBILITY OF SUCH DAMAGE.
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| 39 | *
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| 40 | * \asf_license_stop
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| 41 | *
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| 42 | */
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| 43 |
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| 44 | #include "samd21.h"
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| 45 |
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| 46 | /* Initialize segments */
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| 47 | extern uint32_t _sfixed;
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| 48 | extern uint32_t _efixed;
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| 49 | extern uint32_t _etext;
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| 50 | extern uint32_t _srelocate;
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| 51 | extern uint32_t _erelocate;
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| 52 | extern uint32_t _szero;
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| 53 | extern uint32_t _ezero;
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| 54 | extern uint32_t _sstack;
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| 55 | extern uint32_t _estack;
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| 56 |
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| 57 | /** \cond DOXYGEN_SHOULD_SKIP_THIS */
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| 58 | int main(void);
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| 59 | /** \endcond */
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| 60 |
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| 61 | void __libc_init_array(void);
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| 62 |
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| 63 | /* Default empty handler */
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| 64 | void Dummy_Handler(void);
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| 65 |
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| 66 | /* Cortex-M0+ core handlers */
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| 67 | void NMI_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 68 | void HardFault_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 69 | void SVC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 70 | void PendSV_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 71 | void SysTick_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 72 |
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| 73 | /* Peripherals handlers */
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| 74 | void PM_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 75 | void SYSCTRL_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 76 | void WDT_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 77 | void RTC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 78 | void EIC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 79 | void NVMCTRL_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 80 | void DMAC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 81 | void USB_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 82 | void EVSYS_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 83 | void SERCOM0_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 84 | void SERCOM1_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 85 | void SERCOM2_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 86 | void SERCOM3_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 87 | void SERCOM4_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 88 | void SERCOM5_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 89 | void TCC0_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 90 | void TCC1_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 91 | void TCC2_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 92 | void TC3_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 93 | void TC4_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 94 | void TC5_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 95 | void TC6_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 96 | void TC7_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 97 | void ADC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 98 | void AC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 99 | void DAC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 100 | void PTC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 101 | void I2S_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
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| 102 |
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| 103 | /* Exception Table */
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| 104 | __attribute__ ((section(".vectors")))
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| 105 | const DeviceVectors exception_table = {
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| 106 |
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| 107 | /* Configure Initial Stack Pointer, using linker-generated symbols */
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| 108 | (void*) (&_estack),
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| 109 |
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| 110 | (void*) Reset_Handler,
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| 111 | (void*) NMI_Handler,
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| 112 | (void*) HardFault_Handler,
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| 113 | (void*) (0UL), /* Reserved */
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| 114 | (void*) (0UL), /* Reserved */
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| 115 | (void*) (0UL), /* Reserved */
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| 116 | (void*) (0UL), /* Reserved */
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| 117 | (void*) (0UL), /* Reserved */
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| 118 | (void*) (0UL), /* Reserved */
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| 119 | (void*) (0UL), /* Reserved */
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| 120 | (void*) SVC_Handler,
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| 121 | (void*) (0UL), /* Reserved */
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| 122 | (void*) (0UL), /* Reserved */
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| 123 | (void*) PendSV_Handler,
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| 124 | (void*) SysTick_Handler,
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| 125 |
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| 126 | /* Configurable interrupts */
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| 127 | (void*) PM_Handler, /* 0 Power Manager */
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| 128 | (void*) SYSCTRL_Handler, /* 1 System Control */
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| 129 | (void*) WDT_Handler, /* 2 Watchdog Timer */
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| 130 | (void*) RTC_Handler, /* 3 Real-Time Counter */
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| 131 | (void*) EIC_Handler, /* 4 External Interrupt Controller */
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| 132 | (void*) NVMCTRL_Handler, /* 5 Non-Volatile Memory Controller */
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| 133 | (void*) DMAC_Handler, /* 6 Direct Memory Access Controller */
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| 134 | (void*) USB_Handler, /* 7 Universal Serial Bus */
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| 135 | (void*) EVSYS_Handler, /* 8 Event System Interface */
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| 136 | (void*) SERCOM0_Handler, /* 9 Serial Communication Interface 0 */
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| 137 | (void*) SERCOM1_Handler, /* 10 Serial Communication Interface 1 */
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| 138 | (void*) SERCOM2_Handler, /* 11 Serial Communication Interface 2 */
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| 139 | (void*) SERCOM3_Handler, /* 12 Serial Communication Interface 3 */
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| 140 | (void*) SERCOM4_Handler, /* 13 Serial Communication Interface 4 */
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| 141 | (void*) SERCOM5_Handler, /* 14 Serial Communication Interface 5 */
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| 142 | (void*) TCC0_Handler, /* 15 Timer Counter Control 0 */
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| 143 | (void*) TCC1_Handler, /* 16 Timer Counter Control 1 */
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| 144 | (void*) TCC2_Handler, /* 17 Timer Counter Control 2 */
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| 145 | (void*) TC3_Handler, /* 18 Basic Timer Counter 0 */
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| 146 | (void*) TC4_Handler, /* 19 Basic Timer Counter 1 */
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| 147 | (void*) TC5_Handler, /* 20 Basic Timer Counter 2 */
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| 148 | (void*) TC6_Handler, /* 21 Basic Timer Counter 3 */
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| 149 | (void*) TC7_Handler, /* 22 Basic Timer Counter 4 */
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| 150 | (void*) ADC_Handler, /* 23 Analog Digital Converter */
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| 151 | (void*) AC_Handler, /* 24 Analog Comparators */
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| 152 | (void*) DAC_Handler, /* 25 Digital Analog Converter */
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| 153 | (void*) PTC_Handler, /* 26 Peripheral Touch Controller */
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| 154 | (void*) I2S_Handler /* 27 Inter-IC Sound Interface */
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| 155 | };
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| 156 |
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| 157 | /**
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| 158 | * \brief This is the code that gets called on processor reset.
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| 159 | * To initialize the device, and call the main() routine.
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| 160 | */
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| 161 | void Reset_Handler(void)
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| 162 | {
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| 163 | uint32_t *pSrc, *pDest;
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| 164 |
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| 165 | /* Initialize the relocate segment */
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| 166 | pSrc = &_etext;
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| 167 | pDest = &_srelocate;
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| 168 |
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| 169 | if (pSrc != pDest) {
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| 170 | for (; pDest < &_erelocate;) {
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| 171 | *pDest++ = *pSrc++;
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| 172 | }
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| 173 | }
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| 174 |
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| 175 | /* Clear the zero segment */
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| 176 | for (pDest = &_szero; pDest < &_ezero;) {
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| 177 | *pDest++ = 0;
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| 178 | }
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| 179 |
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| 180 | /* Set the vector table base address */
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| 181 | pSrc = (uint32_t *) & _sfixed;
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| 182 | SCB->VTOR = ((uint32_t) pSrc & SCB_VTOR_TBLOFF_Msk);
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| 183 |
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| 184 | /* Initialize the C library */
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| 185 | __libc_init_array();
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| 186 |
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| 187 | /* Branch to main function */
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| 188 | main();
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| 189 |
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| 190 | /* Infinite loop */
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| 191 | while (1);
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| 192 | }
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| 193 |
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| 194 | /**
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| 195 | * \brief Default interrupt handler for unused IRQs.
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| 196 | */
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| 197 | void Dummy_Handler(void)
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| 198 | {
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| 199 | while (1) {
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| 200 | }
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| 201 | }
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