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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>I’m working on eliminating decoder conflicts for some instructions that have different semantics and asm depending on if they’re preceded by an extension instruction. I looked at the x86 decoder and it seems overkill for what I’m trying to do but maybe it’s the only way?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>What I have is two instructions:<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>1)<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>{4 byte Instruction Encoding} -> “r0 = memw (gp + Addr6)”<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>2)<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>{4 byte Extension} {4 byte Instruction Encoding} -> “r0 = memw (Addr32) “<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The instruction encoding is ambiguous and needs the extension to disambiguate which instruction it actually is though I’m getting tripped up on how to get the decoder to do this.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:black'>Qualcomm Innovation Center, Inc.</span><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black'><br></span><span style='color:black'>The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, </span><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black'><br></span><span style='color:black'>a Linux Foundation Collaborative Project</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>