KVM: PPC: Emulator: clean up instruction parsing

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Instructions on PPC are pretty similarly encoded. So instead of
every instruction emulation code decoding the instruction fields
itself, we can move that code to more generic places and rely on
the compiler to optimize the unused bits away.

This has 2 advantages. It makes the code smaller and it makes the
code less error prone, as the instruction fields are always
available, so accidental misusage is reduced.

Functionally, this patch doesn't change anything.

Signed-off-by: Alexander Graf <agraf@suse.de>

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This commit is contained in:

Alexander Graf 2012-05-04 14:01:33 +02:00

parent 5b74716eba

commit c46dc9a861

5 changed files with 56 additions and 137 deletions

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27

arch/powerpc/kvm/44x_emulate.c

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72

arch/powerpc/kvm/book3s_emulate.c

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7

arch/powerpc/kvm/booke_emulate.c

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16

arch/powerpc/kvm/e500_emulate.c

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71

arch/powerpc/kvm/emulate.c

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