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Why variables wtth prefix of code are put in CONST area by Keil

TS Liu

Hi ,

I have one question for keil compiler.

Originally, in the compile result for my project, CONST size is 0 and all of variables with prefix of code are put in CODE area by compiler.

But now, I did some changes in my project and found some of variables with prefix of code are put in CONST area.

Could you pls explain it. thanks a lot.

Parents
  • 0 in reply to Andy Neil

    Actually I changed DEBUG Macro definition as below

    Old:
    #define DBG_LOG1(DBG_LEVEL, DBG_STR_IDX, P0) SiiDbgLogSend(DBG_LEVEL, DBG_STR_IDX, P0)

    New:
    #define DBG_LOG1(DBG_LEVEL, DBG_STR_IDX, STR_FORMAT, P0) SiiDbgLogSend(DBG_LEVEL, DBG_STR_IDX, 1, P0)

    at the beginning, I only changed such in 2 c files and no constant size allocated. but after all of c files(~30) applied, constant size become several hundred bytes.

    so far, I suspect, in keil complier, when hardcode(numbers) size increased to MAX number, the left code data would be allocated to constant area.

    what relation between code and constant in keil? thanks

Reply
  • 0 in reply to Andy Neil

    Actually I changed DEBUG Macro definition as below

    Old:
    #define DBG_LOG1(DBG_LEVEL, DBG_STR_IDX, P0) SiiDbgLogSend(DBG_LEVEL, DBG_STR_IDX, P0)

    New:
    #define DBG_LOG1(DBG_LEVEL, DBG_STR_IDX, STR_FORMAT, P0) SiiDbgLogSend(DBG_LEVEL, DBG_STR_IDX, 1, P0)

    at the beginning, I only changed such in 2 c files and no constant size allocated. but after all of c files(~30) applied, constant size become several hundred bytes.

    so far, I suspect, in keil complier, when hardcode(numbers) size increased to MAX number, the left code data would be allocated to constant area.

    what relation between code and constant in keil? thanks

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