I have some assembly language routines I am migrating from Delph1 to Delphi4. It seems that delphi4 requires esi, edi, and ebx to be saved over calls to the asm routine. I have found some documention stating this requirement, but nowhere have I found WHAT these registers are being used for. Can anyone enlighten me?
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register usage
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No, I understand the 386 instruction set very well. My question was what DELPHI needs preserved in these registers. I have seen one item that suggests that ESI points to the last object accessed. Also, windows API calls do NOT preserve ESI or EDI.
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