Volume 3: General-Purpose and System Instructions - Stanford ...

24594 Rev. 3.10 February 2005 AMD64 TechnologyTable D-1.Instruction Subsets and CPUID Feature Sets (continued)FXAM Floating-Point Examine 3 X87FXCH Floating-Point Exchange 3 X87FXRSTORFXSAVEFXTRACTRestore XMM, MMX, andx87 StateSave XMM, MMX, andx87 StateFloating-Point ExtractExponent andSignificand333FXSAVE,FXRSTORFXSAVE,FXRSTORFXSAVE,FXRSTORFXSAVE,FXRSTORFXSAVE,FXRSTORFXSAVE,FXRSTORFYL2X Floating-Point y * log2x 3 X87FYL2XP1HADDPDHADDPSFloating-Pointy * log2(x +1)Horizontal Add PackedDoubleHorizontal Add PackedSingle33SSE33 SSE3HLT Halt 0 BasicHSUBPDHSUBPSInstructionMnemonic Description CPLHorizontal SubtractPacked DoubleHorizontal SubtractPacked SingleGeneral-Purpose3 SSE33 SSE3IDIV Signed Divide 3 BasicIMUL Signed Multiply 3 BasicIN Input from Port 3 BasicINC Increment by 1 3 BasicINS Input String 3 BasicINSB Input String Byte 3 BasicInstruction Subsetand CPUID Feature Set(s) 1128-BitMedia64-BitMedia1. Columns indicate the instruction subsets. Entries indicate the CPUID feature set(s) to which the instruction belongs.2. Mnemonic is used for two different instructions. Assemblers can distinguish them by the number and type of operands.x87X87X87SystemAppendix D: Instruction Subsets and CPUID Feature Sets 471