Hi.
I want to implement some missing instructions in x86 part of M5 simulator.
I was looking in the code:
one_byte_opcodes.isa
two_type_opcodes.isa
There is one thing that I don't understand.
The instructions are defined in at least 3 different ways:
1. 0x7: Inst::XORPD(Vq,Wq); /* this have Inst:: */
2. 0x0: CMOVS(Gv,Ev); /* this doesn't have Inst:: */
3.
default: MultiInst::AND(OPCODE_OP_BOTTOM3,
[Eb,Gb], [Ev,Gv],
[Gb,Eb], [Gv,Ev],
[rAb,Ib], [rAv,Iz]);
/* and later */
0x4: AND(Eb,Ib);
Can somebody explain me when I have to implement instruction with
'Inst::', 'MultiInst::' or without prefix.
Tnx,
Srdjan
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