[lkml]   [2010]   [Mar]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Subjectuse of setjmp/longjmp in x86 emulator.
I am looking at improving KVM x86 emulator. Current code does not
handle some special cases correctly (code execution from ROM, ins/outs
to/from MMIO) and many exception conditions during instruction emulation
are not handled correctly. There is a lot of code in emulator that is
there only for exception propagation. Using setjmp/longjmp will be very
beneficial here as exception condition during instruction execution
maps very naturally to setjmp/longjmp, so my question is what about
adding setjmp/longjmp implementation to the kernel, or alternatively,
if there is a fear that it can be abused, add it locally to emulator.c?
Note that instruction emulation is always done in process context.


 \ /
  Last update: 2010-03-01 10:21    [W:0.121 / U:3.808 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site