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https://github.com/RT-Thread/rt-thread.git
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xiongyihui3@gmail.com
74bf69110e
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2429 bbd45198-f89e-11dd-88c7-29a3b14d5316
44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/**
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* define start/end address of ro data.
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* different compiler with different implementation.
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*/
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#ifndef __COMPILER_H__
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#define __COMPILER_H__
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#if defined(__CC_ARM) // armcc
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#warning "Please check scatter file to ensure rodata is in ER_IROM1 region."
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/* symbols reference to the scatter file */
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extern char Image$$ER_IROM1$$Base;
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extern char Image$$ER_IROM1$$Limit;
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#define RODATA_START_ADDRESS (&Image$$ER_IROM1$$Base)
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#define RODATA_END_ADDRESS (&Image$$ER_IROM1$$Limit)
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#elif defined(__GNUC__) // gcc
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#warning "Please check linker script to ensure rodata is between _stext and _etext."
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/* symbols defined in linker script */
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extern char _stext;
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extern char _etext;
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#define RODATA_START_ADDRESS (&_stext)
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#define RODATA_END_ADDRESS (&_etext)
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#else // other compilers
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/* Firstly, modify rodata's start/end address. Then, comment the line below */
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#error "Please modify RODATA_START_ADDRESS and RODATA_END_ADDRESS below */
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/* Perhaps you can use start/end address of flash */
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#define RODATA_START_ADDRESS ((char*)0x08000000)
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#define RODATA_END_ADDRESS ((char*)0x08080000)
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#endif
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#endif // __COMPILER_H__
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