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...ny VEX encoded instructions. TB - Two byte opcode, first byte is 0x0F. VEX.mmmmm=0x1 for VEX encoding. T8 - Three byte opcode, first bytes are 0x0F 0x38. VEX.mmmmm=0x2 for VEX encoding. TA - Three byte opcode, first bytes are 0x0F 0x3A. VEX.mmmmm=0x3 for VEX encoding. XOP8 - Used by AMD xop encoding. XOP.mmmmm=0x8 XOP9 - Used by AMD xop encoding. XOP.mmmmm=0x9 XOPA - Used by AMD xop encoding. XOP.mmmmm=0xA ThreeDNow - 3DNow opcode map. First two bytes are 0x0F 0x0F. Opcode placed at the end of the instruction after modrm. OpEncoding -----...

I am attempting to create an instruction which takes a single 64-bit immediate. This doesn't seem like a thing that would exist already (because who needs an instruction which just takes an immediate?) How might I implement this easily? Perhaps I could use a format which encodes a register, which is then unused? Thanks for the help. Gus -------------- next part -------------- An HTML

...+SrcRegNum; in order to emit binary correctly. Is it right? On Tue, Sep 5, 2017 at 5:45 AM, Craig Topper <craig.topper at gmail.com> wrote: > Put the TA's back. EVEX/EVEX_4V does not replace TA. They are for > different things. An EVEX/EVEX_4V instruction must use one of T8, TA, XOP8, > XOP9, XOPA. > > ~Craig > > On Mon, Sep 4, 2017 at 5:33 PM, hameeza ahmed <hahmed2305 at gmail.com> > wrote: > >> Thank You, >> I changed TA to EVEX or EVEX_4V. But now i am getting following error: >> >> Invalid prefix! >> UNREACHABLE exec...

Thank You, I changed TA to EVEX or EVEX_4V. But now i am getting following error: Invalid prefix! UNREACHABLE executed at /lib/Target/X86/MCTargetDesc/X86MCCodeEmitter.cpp:647! On Tue, Sep 5, 2017 at 4:36 AM, Craig Topper <craig.topper at gmail.com> wrote: > Not all instructions can use EVEX_4V. Move instructions in particular > cannot because they don't have 2 sources. >