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   comp.lang.asm.x86      Ahh, the lost art of x86 assembly      4,675 messages   

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   Message 3,757 of 4,675   
   R.Wieser to All   
   Re: Manners everyone!   
   05 Jan 19 07:34:14   
   
   From: address@nospicedham.not.available   
      
   Rod,   
      
   > Mike tends to post once and go.   
      
   That does explain(?) why bernard jumped in so fast.   
      
   > How do you find the prior stackframe without having saved it via EBP?   
      
   Easy: By removing the current stackframe by adding a constant (for that   
   procedure) to ESP. At least, when you use bernards way of doing things.   
      
   > So, he's likely using using the "maximum # of arguments" count   
   > to either manually restore ESP   
      
   That count does not even make sense (other than to compare agains to check   
   for some kind of overflow), as the ammount of *actually* used arguments can   
   be (way) less.   
      
   > or using a "RET imm16" instruction for stack cleanup.   
      
   Exactly.   And I mentioned that as such in my reply to mike.   
      
      
   Alas, none of this touches my two questions : Why would that value need to   
   be present, and why does it need to be stored in the stackframe. (mike: "Use   
   a stack frame which contains .... the maximum number of called function   
   arguments").   
      
   And mind you, this was a response to mikes suggestion to james, which had   
   zero reference to bernards work.   
      
   And for the record: Even now I get what bernard is doing there I do not see   
   any use for that number to exist (outside of at assemble time), nor why to   
   store it on the stack.   AFAICS its a simple, static value.   
      
   Regards,   
   Rudy Wieser   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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