| 1 | // **********************************************************************
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| 2 | // * SEGGER Microcontroller GmbH *
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| 3 | // * The Embedded Experts *
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| 4 | // **********************************************************************
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| 5 | // * *
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| 6 | // * (c) 2014 - 2020 SEGGER Microcontroller GmbH *
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| 7 | // * (c) 2001 - 2020 Rowley Associates Limited *
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| 8 | // * *
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| 9 | // * www.segger.com Support: support@segger.com *
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| 10 | // * *
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| 11 | // **********************************************************************
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| 12 | // * *
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| 13 | // * All rights reserved. *
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| 14 | // * *
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| 15 | // * Redistribution and use in source and binary forms, with or *
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| 16 | // * without modification, are permitted provided that the following *
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| 17 | // * conditions are met: *
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| 18 | // * *
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| 19 | // * - Redistributions of source code must retain the above copyright *
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| 20 | // * notice, this list of conditions and the following disclaimer. *
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| 21 | // * *
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| 22 | // * - Neither the name of SEGGER Microcontroller GmbH *
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| 23 | // * nor the names of its contributors may be used to endorse or *
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| 24 | // * promote products derived from this software without specific *
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| 25 | // * prior written permission. *
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| 26 | // * *
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| 27 | // * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND *
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| 28 | // * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, *
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| 29 | // * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF *
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| 30 | // * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE *
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| 31 | // * DISCLAIMED. *
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| 32 | // * IN NO EVENT SHALL SEGGER Microcontroller GmbH BE LIABLE FOR *
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| 33 | // * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR *
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| 34 | // * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT *
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| 35 | // * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; *
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| 36 | // * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
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| 37 | // * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT *
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| 38 | // * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE *
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| 39 | // * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH *
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| 40 | // * DAMAGE. *
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| 41 | // * *
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| 42 | // **********************************************************************
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| 43 |
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| 44 | .macro ISR_HANDLER name=
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| 45 | .section .vectors, "ax"
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| 46 | .word \name
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| 47 | .section .init, "ax"
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| 48 | .thumb_func
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| 49 | .weak \name
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| 50 | \name:
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| 51 | 1: b 1b /* endless loop */
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| 52 | .endm
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| 53 |
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| 54 | .macro ISR_RESERVED
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| 55 | .section .vectors, "ax"
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| 56 | .word 0
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| 57 | .endm
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| 58 |
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| 59 | .syntax unified
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| 60 | .global reset_handler
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| 61 | .global Reset_Handler
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| 62 | .equ Reset_Handler, reset_handler
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| 63 |
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| 64 | .section .vectors, "ax"
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| 65 | .code 16
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| 66 | .balign 2
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| 67 | .global _vectors
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| 68 |
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| 69 | .macro DEFAULT_ISR_HANDLER name=
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| 70 | .thumb_func
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| 71 | .weak \name
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| 72 | \name:
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| 73 | 1: b 1b /* endless loop */
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| 74 | .endm
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| 75 |
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| 76 | _vectors:
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| 77 | .word __stack_end__
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| 78 | .word reset_handler
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| 79 | ISR_HANDLER NMI_Handler
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| 80 | ISR_HANDLER HardFault_Handler
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| 81 | ISR_HANDLER MemManage_Handler
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| 82 | ISR_HANDLER BusFault_Handler
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| 83 | ISR_HANDLER UsageFault_Handler
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| 84 | ISR_RESERVED
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| 85 | ISR_RESERVED
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| 86 | ISR_RESERVED
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| 87 | ISR_RESERVED
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| 88 | ISR_HANDLER SVC_Handler
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| 89 | ISR_HANDLER DebugMon_Handler
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| 90 | ISR_RESERVED
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| 91 | ISR_HANDLER PendSV_Handler
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| 92 | ISR_HANDLER SysTick_Handler
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| 93 | #ifdef __VECTORS
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| 94 | #include __VECTORS
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| 95 | #else
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| 96 | ISR_HANDLER ExternalISR0
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| 97 | ISR_HANDLER ExternalISR1
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| 98 | ISR_HANDLER ExternalISR2
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| 99 | ISR_HANDLER ExternalISR3
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| 100 | ISR_HANDLER ExternalISR4
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| 101 | ISR_HANDLER ExternalISR5
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| 102 | ISR_HANDLER ExternalISR6
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| 103 | ISR_HANDLER ExternalISR7
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| 104 | ISR_HANDLER ExternalISR8
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| 105 | ISR_HANDLER ExternalISR9
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| 106 | ISR_HANDLER ExternalISR10
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| 107 | ISR_HANDLER ExternalISR11
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| 108 | ISR_HANDLER ExternalISR12
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| 109 | ISR_HANDLER ExternalISR13
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| 110 | ISR_HANDLER ExternalISR14
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| 111 | ISR_HANDLER ExternalISR15
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| 112 | ISR_HANDLER ExternalISR16
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| 113 | ISR_HANDLER ExternalISR17
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| 114 | ISR_HANDLER ExternalISR18
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| 115 | ISR_HANDLER ExternalISR19
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| 116 | ISR_HANDLER ExternalISR20
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| 117 | ISR_HANDLER ExternalISR21
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| 118 | ISR_HANDLER ExternalISR22
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| 119 | ISR_HANDLER ExternalISR23
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| 120 | ISR_HANDLER ExternalISR24
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| 121 | ISR_HANDLER ExternalISR25
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| 122 | ISR_HANDLER ExternalISR26
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| 123 | ISR_HANDLER ExternalISR27
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| 124 | ISR_HANDLER ExternalISR28
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| 125 | ISR_HANDLER ExternalISR29
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| 126 | ISR_HANDLER ExternalISR30
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| 127 | ISR_HANDLER ExternalISR31
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| 128 | #endif
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| 129 | .section .vectors, "ax"
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| 130 | _vectors_end:
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| 131 |
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| 132 | .section .init, "ax"
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| 133 | .balign 2
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| 134 |
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| 135 | .thumb_func
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| 136 | reset_handler:
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| 137 |
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| 138 | #ifndef __NO_SYSTEM_INIT
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| 139 | ldr r0, =__stack_end__
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| 140 | mov sp, r0
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| 141 | bl SystemInit
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| 142 | #endif
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| 143 |
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| 144 | #if !defined(__SOFTFP__)
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| 145 | // Enable CP11 and CP10 with CPACR |= (0xf<<20)
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| 146 | movw r0, 0xED88
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| 147 | movt r0, 0xE000
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| 148 | ldr r1, [r0]
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| 149 | orrs r1, r1, #(0xf << 20)
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| 150 | str r1, [r0]
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| 151 | #endif
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| 152 |
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| 153 | b _start
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| 154 |
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| 155 | #ifndef __NO_SYSTEM_INIT
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| 156 | .thumb_func
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| 157 | .weak SystemInit
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| 158 | SystemInit:
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| 159 | bx lr
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| 160 | #endif
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