Messages in this thread | | | From | Jakub Jelinek <> | Subject | Re: csum_partial_copy_fromuser patch, #2 | Date | Tue, 4 Feb 1997 09:18:32 +0100 (MET) |
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> > Date: Mon, 3 Feb 1997 21:06:31 +0100 (MET) > From: Ingo Molnar <mingo@pc5829.hil.siemens.at> > > On Mon, 3 Feb 1997, Jakub Jelinek wrote: > > > [...] The fixup would then look down callee's pc, look in there to see > > if exception handling wanted. [...] > > how do you do this? GCC is free to do anything with the stack. > > Jakub forgets sometimes that not all architectures are as nice as > Sparc for this sort of thing. Callers PC is always in a consistant > place, no stack frame mess, it is just there in the right register. >
Well, but I guess we're talking about routines in that may and should be written in assembly and there it is I think easy on every architecture to guess the return pc...
.u$e. Cheers .$$$$$:S Jakub $"*$/"*$$ $.`$ . ^F 4k+#+T.$F -------------------------------------------------------------- 4P+++"$"$ --- Jakub Jelinek, jj@sunsite.mff.cuni.cz :R"+ t$$B Administrator of SunSITE Czech Republic ___# $$$ MFF, Charles University, Prague | | R$$k ---------------------------------------------------------- dd. | Linux $!$ Give your Sparc a new beginning - SparcLinux ddd | Sparc $9$F -------------------------------------------------------- '!!!!!$ !!#!` !!!!!* .!!!!!` '!!!!!!!W..e$$!!!!!!` "~^^~ ^~~^
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