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/gem5/src/arch/x86/isa/formats/
H A Dformats.isadiff 7715:5581d0cd2bdb Fri Oct 22 03:24:00 EDT 2010 Gabe Black <gblack@eecs.umich.edu> X86: Make nop a regular, non-microcoded instruction.

Code in the CPUs that need a nop to carry a fault can't easily deal with a
microcoded nop. This instruction format provides for one that isn't.
H A Dnop.isa7715:5581d0cd2bdb Fri Oct 22 03:24:00 EDT 2010 Gabe Black <gblack@eecs.umich.edu> X86: Make nop a regular, non-microcoded instruction.

Code in the CPUs that need a nop to carry a fault can't easily deal with a
microcoded nop. This instruction format provides for one that isn't.
/gem5/src/arch/x86/isa/decoder/
H A Done_byte_opcodes.isadiff 7715:5581d0cd2bdb Fri Oct 22 03:24:00 EDT 2010 Gabe Black <gblack@eecs.umich.edu> X86: Make nop a regular, non-microcoded instruction.

Code in the CPUs that need a nop to carry a fault can't easily deal with a
microcoded nop. This instruction format provides for one that isn't.

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