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get function start address and code length

karah zg

is there a way to get the start address and code length of a function? I need them in my prog.

thanks,
karah

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  • 0 in reply to karah zg

    I have tried in this way, but I can only get the item addresss in calltable.

    So you are using code banking ? In that case, the can of worms mentioned just got a whole lot nastier.

    You could, of course, rip the functions start address out of the call table. There has to be a call to the appropriate address in there.

    The question still is - what are you trying to accomplish ? The '51 architecture does not lend itself too well to doing things like virtual memory. If you are trying to relocate functions to a different address, all non-relative jumps will end up at some meaningless address - instant crash.

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  • 0 in reply to karah zg

    I have tried in this way, but I can only get the item addresss in calltable.

    So you are using code banking ? In that case, the can of worms mentioned just got a whole lot nastier.

    You could, of course, rip the functions start address out of the call table. There has to be a call to the appropriate address in there.

    The question still is - what are you trying to accomplish ? The '51 architecture does not lend itself too well to doing things like virtual memory. If you are trying to relocate functions to a different address, all non-relative jumps will end up at some meaningless address - instant crash.

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