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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