202 lines
8.6 KiB
C
202 lines
8.6 KiB
C
/*
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* Copyright (c) 2016, The OpenThread Authors.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @file
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* This file implements gcc-specific startup code for the cc2538.
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*/
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#include <stdint.h>
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#include <string.h>
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#include "cc2538-reg.h"
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extern uint8_t _ldata;
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extern uint8_t _data;
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extern uint8_t _edata;
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extern uint8_t _bss;
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extern uint8_t _ebss;
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extern uint8_t _init_array;
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extern uint8_t _einit_array;
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__extension__ typedef int __guard __attribute__((mode(__DI__)));
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int __cxa_guard_acquire(__guard *g) { return !*(char *)(g); }
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void __cxa_guard_release(__guard *g) { *(char *)g = 1; }
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void __cxa_guard_abort(__guard *g) { (void)g; }
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void __cxa_pure_virtual(void) { while (1); }
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void IntDefaultHandler(void);
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void ResetHandler(void);
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extern void SysTick_Handler(void);
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extern void UART0IntHandler(void);
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extern void RFCoreRxTxIntHandler(void);
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extern void RFCoreErrIntHandler(void);
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extern void main(void);
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static uint64_t stack[384] __attribute__((section(".stack")));
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__attribute__((section(".vectors"), used))
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void (*const vectors[])(void) =
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{
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(void (*)(void))((unsigned long)stack + sizeof(stack)), // Initial Stack Pointer
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ResetHandler, // 1 The reset handler
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ResetHandler, // 2 The NMI handler
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IntDefaultHandler, // 3 The hard fault handler
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IntDefaultHandler, // 4 The MPU fault handler
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IntDefaultHandler, // 5 The bus fault handler
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IntDefaultHandler, // 6 The usage fault handler
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0, // 7 Reserved
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0, // 8 Reserved
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0, // 9 Reserved
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0, // 10 Reserved
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IntDefaultHandler, // 11 SVCall handler
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IntDefaultHandler, // 12 Debug monitor handler
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0, // 13 Reserved
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IntDefaultHandler, // 14 The PendSV handler
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SysTick_Handler, // 15 The SysTick handler
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IntDefaultHandler, // 16 GPIO Port A
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IntDefaultHandler, // 17 GPIO Port B
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IntDefaultHandler, // 18 GPIO Port C
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IntDefaultHandler, // 19 GPIO Port D
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0, // 20 none
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UART0IntHandler, // 21 UART0 Rx and Tx
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IntDefaultHandler, // 22 UART1 Rx and Tx
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IntDefaultHandler, // 23 SSI0 Rx and Tx
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IntDefaultHandler, // 24 I2C Master and Slave
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0, // 25 Reserved
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0, // 26 Reserved
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0, // 27 Reserved
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0, // 28 Reserved
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0, // 29 Reserved
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IntDefaultHandler, // 30 ADC Sequence 0
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0, // 31 Reserved
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0, // 32 Reserved
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0, // 33 Reserved
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IntDefaultHandler, // 34 Watchdog timer, timer 0
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IntDefaultHandler, // 35 Timer 0 subtimer A
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IntDefaultHandler, // 36 Timer 0 subtimer B
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IntDefaultHandler, // 37 Timer 1 subtimer A
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IntDefaultHandler, // 38 Timer 1 subtimer B
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IntDefaultHandler, // 39 Timer 2 subtimer A
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IntDefaultHandler, // 40 Timer 2 subtimer B
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IntDefaultHandler, // 41 Analog Comparator 0
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RFCoreRxTxIntHandler, // 42 RFCore Rx/Tx
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RFCoreErrIntHandler, // 43 RFCore Error
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IntDefaultHandler, // 44 IcePick
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IntDefaultHandler, // 45 FLASH Control
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IntDefaultHandler, // 46 AES
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IntDefaultHandler, // 47 PKA
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IntDefaultHandler, // 48 Sleep Timer
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IntDefaultHandler, // 49 MacTimer
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IntDefaultHandler, // 50 SSI1 Rx and Tx
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IntDefaultHandler, // 51 Timer 3 subtimer A
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IntDefaultHandler, // 52 Timer 3 subtimer B
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0, // 53 Reserved
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0, // 54 Reserved
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0, // 55 Reserved
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0, // 56 Reserved
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0, // 57 Reserved
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0, // 58 Reserved
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0, // 59 Reserved
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IntDefaultHandler, // 60 USB 2538
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0, // 61 Reserved
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IntDefaultHandler, // 62 uDMA
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IntDefaultHandler, // 63 uDMA Error
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};
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void IntDefaultHandler(void)
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{
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while (1);
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}
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#define FLASH_CCA_BOOTLDR_CFG_DISABLE 0xEFFFFFFF ///< Disable backdoor function
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#define FLASH_CCA_BOOTLDR_CFG_ENABLE 0xF0FFFFFF ///< Enable backdoor function
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#define FLASH_CCA_BOOTLDR_CFG_ACTIVE_HIGH 0x08000000 ///< Selected pin on pad A active high
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#define FLASH_CCA_BOOTLDR_CFG_PORT_A_PIN_M 0x07000000 ///< Selected pin on pad A mask
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#define FLASH_CCA_BOOTLDR_CFG_PORT_A_PIN_S 24 ///< Selected pin on pad A shift
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#define FLASH_CCA_IMAGE_VALID 0x00000000 ///< Indicates valid image in flash
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#define FLASH_CCA_CONF_BOOTLDR_BACKDOOR_PORT_A_PIN 3 ///< Select Button on SmartRF06 Eval Board
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typedef struct
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{
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uint32_t ui32BootldrCfg;
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uint32_t ui32ImageValid;
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uint32_t ui32ImageVectorAddr;
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uint8_t ui8lock[32];
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} flash_cca_lock_page_t;
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__attribute__((__section__(".flashcca"), used))
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const flash_cca_lock_page_t flash_cca_lock_page =
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{
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FLASH_CCA_BOOTLDR_CFG_ENABLE | (FLASH_CCA_CONF_BOOTLDR_BACKDOOR_PORT_A_PIN << FLASH_CCA_BOOTLDR_CFG_PORT_A_PIN_S),
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FLASH_CCA_IMAGE_VALID,
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(uint32_t) &vectors,
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{
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
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}
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};
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typedef void (*init_fn_t)(void);
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void ResetHandler(void)
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{
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HWREG(SYS_CTRL_EMUOVR) = 0xFF;
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// configure clocks
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HWREG(SYS_CTRL_CLOCK_CTRL) |= SYS_CTRL_CLOCK_CTRL_AMP_DET;
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HWREG(SYS_CTRL_CLOCK_CTRL) = SYS_CTRL_SYSDIV_32MHZ;
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// alternate map
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HWREG(SYS_CTRL_I_MAP) |= SYS_CTRL_I_MAP_ALTMAP;
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// copy the data segment initializers from flash to SRAM
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memcpy(&_data, &_ldata, &_edata - &_data);
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// zero-fill the bss segment
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memset(&_bss, 0, &_ebss - &_bss);
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// C++ runtime initialization (BSS, Data, relocation, etc.)
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init_fn_t *fp;
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for (fp = (init_fn_t *)&_init_array; fp < (init_fn_t *)&_einit_array; fp++)
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{
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(*fp)();
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}
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// call the application's entry point
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main();
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// end here if main() returns
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while (1);
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}
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