48 lines
1.5 KiB
C
48 lines
1.5 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 _rodata_start;
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// extern char _rodata_end;
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extern char _irom0_text_start;
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extern char _irom0_text_end;
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// modify linker script to ensure rodata and rodata1 is between _rodata_start and _rodata_end.
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// #define RODATA_START_ADDRESS (&_rodata_start)
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// #define RODATA_END_ADDRESS (&_rodata_end)
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#define RODATA_START_ADDRESS (&_irom0_text_start)
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#define RODATA_END_ADDRESS (&_irom0_text_end)
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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*)0x40200000)
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#define RODATA_END_ADDRESS ((char*)0x40280000)
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#endif
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#endif // __COMPILER_H__
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