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https://github.com/pound-emu/ballistic.git
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163 lines
7.4 KiB
XML
163 lines
7.4 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<?xml-stylesheet type="text/xsl" encoding="UTF-8" href="iform.xsl" version="1.0"?>
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<!DOCTYPE instructionsection PUBLIC "-//ARM//DTD instructionsection //EN" "iform-p.dtd">
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<!-- Copyright (c) 2010-2022 Arm Limited or its affiliates. All rights reserved. -->
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<!-- This document is Non-Confidential. This document may only be used and distributed in accordance with the terms of the agreement entered into by Arm and the party that Arm delivered this document to. -->
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<instructionsection id="fdup_z_i" title="FDUP" type="instruction">
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<docvars>
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<docvar key="instr-class" value="sve" />
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<docvar key="isa" value="A64" />
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<docvar key="mnemonic" value="FDUP" />
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</docvars>
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<heading>FDUP</heading>
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<desc>
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<brief>Broadcast 8-bit floating-point immediate to vector elements (unpredicated)</brief>
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<description>
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<para>Unconditionally broadcast the floating-point immediate into each element of the destination vector. This instruction is unpredicated.</para>
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</description>
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<status>Green</status>
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<predicated>False</predicated>
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</desc>
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<alias_list howmany="1">
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<alias_list_intro>This instruction is used by the alias </alias_list_intro>
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<aliasref aliaspageid="FMOV_fdup_z_i" aliasfile="fmov_fdup_z_i.xml" hover="Move 8-bit floating-point immediate to vector elements (unpredicated)" punct=".">
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<text>FMOV (immediate, unpredicated)</text>
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<aliaspref>Unconditionally</aliaspref>
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</aliasref>
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<alias_list_outro> The alias is always the preferred disassembly.</alias_list_outro>
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</alias_list>
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<classes>
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<iclass name="SVE" oneof="1" id="iclass_sve" no_encodings="1" isa="A64">
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<docvars>
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<docvar key="instr-class" value="sve" />
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<docvar key="isa" value="A64" />
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<docvar key="mnemonic" value="FDUP" />
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</docvars>
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<iclassintro count="1"></iclassintro>
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<regdiagram form="32" psname="FDUP-Z.I-_">
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<box hibit="31" width="8" settings="8">
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<c>0</c>
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<c>0</c>
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<c>1</c>
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<c>0</c>
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<c>0</c>
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<c>1</c>
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<c>0</c>
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<c>1</c>
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</box>
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<box hibit="23" width="2" name="size" usename="1">
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<c colspan="2"></c>
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</box>
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<box hibit="21" width="3" settings="3">
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<c>1</c>
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<c>1</c>
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<c>1</c>
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</box>
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<box hibit="18" name="opc<1>" settings="1">
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<c>0</c>
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</box>
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<box hibit="17" name="opc<0>" settings="1">
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<c>0</c>
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</box>
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<box hibit="16" width="3" settings="3">
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<c>1</c>
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<c>1</c>
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<c>1</c>
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</box>
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<box hibit="13" name="o2" settings="1">
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<c>0</c>
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</box>
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<box hibit="12" width="8" name="imm8" usename="1">
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<c colspan="8"></c>
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</box>
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<box hibit="4" width="5" name="Zd" usename="1">
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<c colspan="5"></c>
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</box>
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</regdiagram>
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<encoding name="fdup_z_i_" oneofinclass="1" oneof="1" label="">
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<docvars>
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<docvar key="instr-class" value="sve" />
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<docvar key="isa" value="A64" />
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<docvar key="mnemonic" value="FDUP" />
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</docvars>
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<asmtemplate><text>FDUP </text><a link="sa_zd" hover="Destination scalable vector register (field "Zd")"><Zd></a><text>.</text><a link="sa_t" hover="Size specifier (field "size") [D,H,S]"><T></a><text>, #</text><a link="sa_const" hover="Floating-point immediate value expressable as ±n÷16×2^r (field "imm8")"><const></a></asmtemplate>
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</encoding>
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<ps_section howmany="1">
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<ps name="FDUP-Z.I-_" mylink="FDUP-Z.I-_" enclabels="" sections="1" secttype="noheading">
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<pstext mayhavelinks="1" section="Decode" rep_section="decode">if !<a link="impl-aarch64.HaveSVE.0" file="shared_pseudocode.xml" hover="function: boolean HaveSVE()">HaveSVE</a>() && !<a link="impl-aarch64.HaveSME.0" file="shared_pseudocode.xml" hover="function: boolean HaveSME()">HaveSME</a>() then UNDEFINED;
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if size == '00' then UNDEFINED;
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constant integer esize = 8 << <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(size);
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integer d = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zd);
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bits(esize) imm = <a link="impl-shared.VFPExpandImm.2" file="shared_pseudocode.xml" hover="function: bits(N) VFPExpandImm(bits(8) imm8, integer N)">VFPExpandImm</a>(imm8, esize);</pstext>
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</ps>
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</ps_section>
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</iclass>
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</classes>
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<explanations scope="all">
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<explanation enclist="fdup_z_i_" symboldefcount="1">
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<symbol link="sa_zd"><Zd></symbol>
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<account encodedin="Zd">
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<intro>
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<para>Is the name of the destination scalable vector register, encoded in the "Zd" field.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="fdup_z_i_" symboldefcount="1">
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<symbol link="sa_t"><T></symbol>
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<definition encodedin="size">
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<intro>Is the size specifier, </intro>
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<table class="valuetable">
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<tgroup cols="2">
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<thead>
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<row>
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<entry class="bitfield">size</entry>
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<entry class="symbol"><T></entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry class="bitfield">00</entry>
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<entry class="symbol">RESERVED</entry>
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</row>
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<row>
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<entry class="bitfield">01</entry>
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<entry class="symbol">H</entry>
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</row>
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<row>
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<entry class="bitfield">10</entry>
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<entry class="symbol">S</entry>
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</row>
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<row>
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<entry class="bitfield">11</entry>
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<entry class="symbol">D</entry>
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</row>
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</tbody>
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</tgroup>
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</table>
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</definition>
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</explanation>
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<explanation enclist="fdup_z_i_" symboldefcount="1">
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<symbol link="sa_const"><const></symbol>
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<account encodedin="imm8">
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<intro>
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<para>Is a floating-point immediate value expressable as ±n÷16×2^r, where n and r are integers such that 16 ≤ n ≤ 31 and -3 ≤ r ≤ 4, i.e. a normalized binary floating-point encoding with 1 sign bit, 3-bit exponent, and 4-bit fractional part, encoded in the "imm8" field.</para>
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</intro>
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</account>
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</explanation>
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</explanations>
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<ps_section howmany="1">
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<ps name="FDUP-Z.I-_" mylink="execute" enclabels="" sections="1" secttype="Operation">
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<pstext mayhavelinks="1" section="Execute" rep_section="execute"><a link="impl-aarch64.CheckSVEEnabled.0" file="shared_pseudocode.xml" hover="function: CheckSVEEnabled()">CheckSVEEnabled</a>();
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constant integer VL = <a link="impl-aarch64.CurrentVL.read.none" file="shared_pseudocode.xml" hover="accessor: integer CurrentVL">CurrentVL</a>;
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constant integer elements = VL DIV esize;
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bits(VL) result;
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for e = 0 to elements-1
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<a link="impl-shared.Elem.write.3" file="shared_pseudocode.xml" hover="accessor: Elem[bits(N) &vector, integer e, integer size] = bits(size) value">Elem</a>[result, e, esize] = imm;
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<a link="impl-aarch64.Z.write.2" file="shared_pseudocode.xml" hover="accessor: Z[integer n, integer width] = bits(width) value">Z</a>[d, VL] = result;</pstext>
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</ps>
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</ps_section>
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</instructionsection>
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