mirror of
https://github.com/pound-emu/ballistic.git
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275 lines
12 KiB
XML
275 lines
12 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="uunpkhi_z_z" title="UUNPKHI, UUNPKLO" 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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</docvars>
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<heading>UUNPKHI, UUNPKLO</heading>
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<desc>
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<brief>Unsigned unpack and extend half of vector</brief>
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<description>
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<para>Unpack elements from the lowest or highest half of the source vector and then zero-extend them to place in elements of twice their size within 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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<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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<classesintro count="2">
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<txt>It has encodings from 2 classes:</txt>
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<a href="#iclass_sve_high_half">High half</a>
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<txt> and </txt>
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<a href="#iclass_sve_low_half">Low half</a>
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</classesintro>
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<iclass name="High half" oneof="2" id="iclass_sve_high_half" 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="UUNPKHI" />
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<docvar key="sve-half" value="sve-high-half" />
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</docvars>
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<iclassintro count="1"></iclassintro>
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<regdiagram form="32" psname="UUNPKHI-Z.Z-_" tworows="1">
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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>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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</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="4" settings="4">
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<c>1</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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</box>
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<box hibit="17" name="U" usename="1" settings="1">
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<c>1</c>
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</box>
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<box hibit="16" name="H" usename="1" settings="1">
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<c>1</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>1</c>
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<c>1</c>
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<c>0</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="uunpkhi_z_z_" oneofinclass="1" oneof="2" 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="UUNPKHI" />
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<docvar key="sve-half" value="sve-high-half" />
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</docvars>
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<asmtemplate><text>UUNPKHI </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_zn" hover="Source scalable vector register (field "Zn")"><Zn></a><text>.</text><a link="sa_tb" hover="Size specifier (field "size") [B,H,S]"><Tb></a></asmtemplate>
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</encoding>
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<ps_section howmany="1">
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<ps name="UUNPKHI-Z.Z-_" mylink="UUNPKHI-Z.Z-_" 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 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);
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boolean unsigned = TRUE;
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boolean hi = TRUE;</pstext>
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</ps>
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</ps_section>
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</iclass>
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<iclass name="Low half" oneof="2" id="iclass_sve_low_half" 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="UUNPKLO" />
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<docvar key="sve-half" value="sve-low-half" />
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</docvars>
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<iclassintro count="1"></iclassintro>
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<regdiagram form="32" psname="UUNPKLO-Z.Z-_" tworows="1">
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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>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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</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="4" settings="4">
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<c>1</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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</box>
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<box hibit="17" name="U" usename="1" settings="1">
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<c>1</c>
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</box>
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<box hibit="16" name="H" usename="1" settings="1">
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<c>0</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>1</c>
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<c>1</c>
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<c>0</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="uunpklo_z_z_" oneofinclass="1" oneof="2" 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="UUNPKLO" />
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<docvar key="sve-half" value="sve-low-half" />
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</docvars>
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<asmtemplate><text>UUNPKLO </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_zn" hover="Source scalable vector register (field "Zn")"><Zn></a><text>.</text><a link="sa_tb" hover="Size specifier (field "size") [B,H,S]"><Tb></a></asmtemplate>
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</encoding>
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<ps_section howmany="1">
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<ps name="UUNPKLO-Z.Z-_" mylink="UUNPKLO-Z.Z-_" 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 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);
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boolean unsigned = TRUE;
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boolean hi = FALSE;</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="uunpkhi_z_z_, uunpklo_z_z_" 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="uunpkhi_z_z_, uunpklo_z_z_" 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="uunpkhi_z_z_, uunpklo_z_z_" 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="uunpkhi_z_z_, uunpklo_z_z_" symboldefcount="1">
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<symbol link="sa_tb"><Tb></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"><Tb></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">B</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">H</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">S</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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</explanations>
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<ps_section howmany="1">
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<ps name="UUNPKHI-Z.Z-_" 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 elements = VL DIV esize;
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constant integer hsize = esize DIV 2;
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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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for e = 0 to elements-1
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bits(hsize) element = if hi then <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, e + elements, hsize] else <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, e, hsize];
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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] = <a link="impl-shared.Extend.3" file="shared_pseudocode.xml" hover="function: bits(N) Extend(bits(M) x, integer N, boolean unsigned)">Extend</a>(element, esize, unsigned);
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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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