On 08/23/2010 04:29 PM, Paolo Bonzini wrote:
On 08/23/2010 01:06 PM, Avi Kivity wrote:
Many x86 instructions come in pairs - byte and word variants where bit 0
of the opcode determines operand size. Use this to simplify the decode
tables.
Many actually come in quadruples, bit 0 is the size and bit 1 says
which of ModRM and REG is the destination.
example:
D2bv(DstMem | SrcReg | ModRM | Lock), D2bv(DstReg | SrcMem | ModRM),
Right. We can't exploit those yet.
I'd like to make operand encoding regular (same bit definitions for Src,
Dst, and Src2) which would allow us to do this (and have a
decode_operand() and fetch_operand() instead of the current three switches).
--
error compiling committee.c: too many arguments to function
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