75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
/*
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* File : crt_init.c
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* This file is part of Device File System in RT-Thread RTOS
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* COPYRIGHT (C) 2008-2015, RT-Thread Development Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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* 2014-12-03 Bernard Add copyright header.
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* 2014-12-29 Bernard Add cplusplus initialization for ARMCC.
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*/
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#include <rtthread.h>
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#ifdef __CC_ARM
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extern void $Super$$__cpp_initialize__aeabi_(void);
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/* we need to change the cpp_initialize order */
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void $Sub$$__cpp_initialize__aeabi_(void)
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{
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/* empty */
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}
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#endif
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int cplusplus_system_init(void)
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{
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#if defined(__GNUC__) && !defined(__CC_ARM)
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extern unsigned char __ctors_start__;
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extern unsigned char __ctors_end__;
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typedef void (*func)(void);
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/* .ctors initalization */
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func *ctors_func;
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for (ctors_func = (func *)&__ctors_start__;
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ctors_func < (func *)&__ctors_end__;
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ctors_func ++)
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{
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(*ctors_func)();
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}
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#elif defined(__CC_ARM)
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/* If there is no SHT$$INIT_ARRAY, calling
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* $Super$$__cpp_initialize__aeabi_() will cause fault. At least until Keil5.12
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* the problem still exists. So we have to initialize the C++ runtime by ourself.
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*/
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typedef void PROC();
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extern const unsigned long SHT$$INIT_ARRAY$$Base[];
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extern const unsigned long SHT$$INIT_ARRAY$$Limit[];
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const unsigned long *base = SHT$$INIT_ARRAY$$Base;
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const unsigned long *lim = SHT$$INIT_ARRAY$$Limit;
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for (; base != lim; base++)
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{
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PROC *proc = (PROC*)((const char*)base + *base);
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(*proc)();
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}
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#endif
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return 0;
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}
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INIT_COMPONENT_EXPORT(cplusplus_system_init);
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