Embedded Studio使用calloc函数注意事项
要在icf脚本里面加上这句才可以正常使用：
initialize by symbol __SEGGER_init_heap { block heap};
// **********************************************************************
// * SEGGER Microcontroller GmbH *
// * The Embedded Experts *
// **********************************************************************
// * *
// * (c) 2014 - 2019 SEGGER Microcontroller GmbH *
// * (c) 2001 - 2019 Rowley Associates Limited *
// * *
// * www.segger.com Support: support@segger.com *
// * *
// **********************************************************************
// * *
// * All rights reserved. *
// * *
// * Redistribution and use in source and binary forms, with or *
// * without modification, are permitted provided that the following *
// * conditions are met: *
// * *
// * - Redistributions of source code must retain the above copyright *
// * notice, this list of conditions and the following disclaimer. *
// * *
// * - Neither the name of SEGGER Microcontroller GmbH *
// * nor the names of its contributors may be used to endorse or *
// * promote products derived from this software without specific *
// * prior written permission. *
// * *
// * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND *
// * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, *
// * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF *
// * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE *
// * DISCLAIMED. *
// * IN NO EVENT SHALL SEGGER Microcontroller GmbH BE LIABLE FOR *
// * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR *
// * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT*
// * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; *
// * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
// * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT *
// * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE*
// * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH *
// * DAMAGE. *
// * *
// **********************************************************************
define memory with size = 4G;
//
// Combined regions per memory type
//
define region FLASH = FLASH1;
define region RAM = AXI_RAM1;
//
// Block definitions
//
define block vectors { section .vectors };
define block vectors_ram { section .vectors_ram };
define block ctors { section .ctors, section .ctors.*, block with alphabetical order { init_array } };
define block dtors { section .dtors, section .dtors.*, block with reverse alphabetical order { fini_array } };
define block exidx { section .ARM.exidx, section .ARM.exidx.* };
define block tbss { section .tbss, section .tbss.*};
define block tdata { section .tdata, section .tdata.* };
define block tls { block tbss, block tdata };
define block tdata_load { copy of block tdata };
define block heapwith size = __HEAPSIZE__,alignment = 8, /* fill =0x00, */ readwrite access { };
define block stack with size = __STACKSIZE__, alignment = 8, /* fill =0xCD, */ readwrite access { };
//
// Explicit initialization settings for sections
//
do not initialize { section .non_init, section .non_init.*, section .*.non_init, section .*.non_init.* };
initialize by copy /* with packing=auto */{ section .data, section .data.*, section .*.data, section .*.data.* };
initialize by copy /* with packing=auto */{ section .fast, section .fast.* };
//
// Explicit placement in FLASHn
//
place in FLASH1 { section .FLASH1, section .FLASH1.* };
//
// FLASH Placement
//
place at start of FLASH { block vectors }; // Vector table section
place in FLASH with minimum size order { section .init, section .init.*, // Init code section
section .init_rodata, section .init_rodata.*, // Init read-only section
section .text, section .text.*, // Code section
section .rodata, section .rodata.*, // Read-only data section
section .segger.*, // Auto-generated initialization
block exidx, // ARM exception unwinding block
block ctors, // Constructors block
block dtors }; // Destructors block
place in FLASH { block tdata_load }; // Thread-local-storage load image
//
// Explicit placement in RAMn
//
place in ITCM_RAM1 { section .ITCM_RAM1, section .ITCM_RAM1.* };
place in DTCM_RAM1 { section .DTCM_RAM1, section .DTCM_RAM1.* };
place in AXI_RAM1 { section .AXI_RAM1, section .AXI_RAM1.* };
place in RAM1 { section .RAM1, section .RAM1.* };
place in RAM2 { section .RAM2, section .RAM2.* };
place in RAM3 { section .RAM3, section .RAM3.* };
place in RAM4 { section .RAM4, section .RAM4.* };
place in Backup_RAM1 { section .Backup_RAM1, section .Backup_RAM1.* };
//
// RAM Placement
//
place at start of RAM { block vectors_ram };
place in RAM { section .non_init, section .non_init.*,// No initialization section
block tls }; // Thread-local-storage block
place in RAM with auto order { section .fast, section .fast.*, // "ramfunc" section
section .data, section .data.*, // Initialized data section
section .bss, section .bss.*
}; // Static data section
place in RAM { block heap }; // Heap reserved block
place at end of RAM { block stack }; // Stack reserved block at the end
initialize by symbol __SEGGER_init_heap { block heap};
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