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https://github.com/pound-emu/ballistic.git
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180 lines
8.8 KiB
XML
180 lines
8.8 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="dupq_z_zi" title="DUPQ" type="instruction">
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<docvars>
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<docvar key="instr-class" value="sve2" />
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<docvar key="isa" value="A64" />
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<docvar key="mnemonic" value="DUPQ" />
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</docvars>
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<heading>DUPQ</heading>
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<desc>
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<brief>Broadcast indexed element within each quadword vector segment (unpredicated)</brief>
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<description>
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<para>Unconditionally broadcast the indexed element within each 128-bit source vector segment to all elements of the corresponding destination vector segment. This instruction is unpredicated.</para>
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<para>The immediate element index is in the range of 0 to 15 (bytes), 7 (halfwords), 3 (words) or 1 (doublewords).</para>
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</description>
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<status>Green</status>
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<predicated>False</predicated>
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<uses_dit condition="FEAT_SVE2 is implemented or FEAT_SME is implemented">True</uses_dit>
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</desc>
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<alias_list howmany="0"></alias_list>
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<classes>
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<iclass name="SVE2" oneof="1" id="iclass_sve2" no_encodings="1" isa="A64">
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<docvars>
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<docvar key="instr-class" value="sve2" />
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<docvar key="isa" value="A64" />
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<docvar key="mnemonic" value="DUPQ" />
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</docvars>
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<iclassintro count="1"></iclassintro>
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<arch_variants>
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<arch_variant name="FEAT_SVE2p1" feature="FEAT_SVE2p1" />
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</arch_variants>
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<regdiagram form="32" psname="DUPQ-Z.Zi-_">
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<box hibit="31" width="11" settings="11">
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<c>0</c>
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<c>0</c>
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<c>0</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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<c>0</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="20" name="i1" usename="1">
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<c></c>
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</box>
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<box hibit="19" width="4" name="tsz" usename="1">
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<c colspan="4"></c>
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</box>
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<box hibit="15" width="6" settings="6">
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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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</box>
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<box hibit="9" width="5" name="Zn" usename="1">
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<c colspan="5"></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="dupq_z_zi_" oneofinclass="1" oneof="1" label="">
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<docvars>
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<docvar key="instr-class" value="sve2" />
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<docvar key="isa" value="A64" />
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<docvar key="mnemonic" value="DUPQ" />
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</docvars>
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<asmtemplate><text>DUPQ </text><a link="sa_zd" hover="Destination scalable vector register (field "Zd")"><Zd></a><text>.</text><a link="sa_t" hover="Size specifier (field "tsz") [B,D,H,S]"><T></a><text>, </text><a link="sa_zn" hover="Source scalable vector register (field "Zn")"><Zn></a><text>.</text><a link="sa_t" hover="Size specifier (field "tsz") [B,D,H,S]"><T></a><text>[</text><a link="sa_imm" hover="Immediate index [0-one less than the number of elements in 128 bits] (field "i1:tsz")"><imm></a><text>]</text></asmtemplate>
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</encoding>
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<ps_section howmany="1">
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<ps name="DUPQ-Z.Zi-_" mylink="DUPQ-Z.Zi-_" enclabels="" sections="1" secttype="noheading">
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<pstext mayhavelinks="1" section="Decode" rep_section="decode">if !<a link="impl-aarch64.HaveSVE2p1.0" file="shared_pseudocode.xml" hover="function: boolean HaveSVE2p1()">HaveSVE2p1</a>() && !<a link="impl-aarch64.HaveSME2p1.0" file="shared_pseudocode.xml" hover="function: boolean HaveSME2p1()">HaveSME2p1</a>() then UNDEFINED;
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bits(5) imm = i1:tsz;
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integer esize;
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integer index;
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case tsz of
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when '0000' UNDEFINED;
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when '1000' esize = 64; index = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(imm<4:4>);
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when 'x100' esize = 32; index = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(imm<4:3>);
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when 'xx10' esize = 16; index = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(imm<4:2>);
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when 'xxx1' esize = 8; index = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(imm<4:1>);
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integer n = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zn);
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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);</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="dupq_z_zi_" 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="dupq_z_zi_" symboldefcount="1">
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<symbol link="sa_t"><T></symbol>
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<definition encodedin="tsz">
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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">tsz</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">0000</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">xxx1</entry>
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<entry class="symbol">B</entry>
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</row>
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<row>
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<entry class="bitfield">xx10</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">x100</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">1000</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="dupq_z_zi_" symboldefcount="1">
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<symbol link="sa_zn"><Zn></symbol>
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<account encodedin="Zn">
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<intro>
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<para>Is the name of the source scalable vector register, encoded in the "Zn" field.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="dupq_z_zi_" symboldefcount="1">
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<symbol link="sa_imm"><imm></symbol>
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<account encodedin="i1:tsz">
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<intro>
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<para>Is the immediate index, in the range 0 to one less than the number of elements in 128 bits, encoded in "i1:tsz".</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="DUPQ-Z.Zi-_" 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 PL = VL DIV 8;
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constant integer segments = VL DIV 128;
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constant integer elements = 128 DIV esize;
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bits(VL) operand = <a link="impl-aarch64.Z.read.2" file="shared_pseudocode.xml" hover="accessor: bits(width) Z[integer n, integer width]">Z</a>[n, VL];
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bits(VL) result;
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bits(esize) element;
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for s = 0 to segments-1
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element = <a link="impl-shared.Elem.read.3" file="shared_pseudocode.xml" hover="accessor: bits(size) Elem[bits(N) vector, integer e, integer size]">Elem</a>[operand, s * elements + index, esize];
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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, s, 128] = <a link="impl-shared.Replicate.2" file="shared_pseudocode.xml" hover="function: bits(M*N) Replicate(bits(M) x, integer N)">Replicate</a>(element, 128 DIV esize);
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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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