slonik/specs/vzip.xml

388 lines
21 KiB
XML

<?xml version="1.0" encoding="utf-8"?>
<?xml-stylesheet type="text/xsl" encoding="UTF-8" href="iform.xsl" version="1.0"?>
<!DOCTYPE instructionsection PUBLIC "-//ARM//DTD instructionsection //EN" "iform-p.dtd">
<!-- Copyright (c) 2010-2022 Arm Limited or its affiliates. All rights reserved. -->
<!-- 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. -->
<instructionsection id="VZIP" title="VZIP -- AArch32" type="instruction">
<docvars>
<docvar key="instr-class" value="fpsimd" />
<docvar key="mnemonic" value="VZIP" />
</docvars>
<heading>VZIP</heading>
<desc>
<brief>
<para>Vector Zip</para>
</brief>
<authored>
<para>Vector Zip interleaves the elements of two vectors.</para>
<para>The elements of the vectors can be 8-bit, 16-bit, or 32-bit. There is no distinction between data types.</para>
<para><image file="operation_doubleword_vzip8.svg" label="VZIP doubleword operation for data type 8"></image></para>
<para><image file="operation_quadword_vzip32.svg" label="VZIP quadword operation for data type 32"></image></para>
<para>Depending on settings in the <xref linkend="AArch32.cpacr">CPACR</xref>, <xref linkend="AArch32.nsacr">NSACR</xref>, and <xref linkend="AArch32.hcptr">HCPTR</xref> registers, and the Security state and PE mode in which the instruction is executed, an attempt to execute the instruction might be <arm-defined-word>undefined</arm-defined-word>, or trapped to Hyp mode. For more information see <xref linkend="CIHIDDFF">Enabling Advanced SIMD and floating-point support</xref>.</para>
</authored>
</desc>
<operationalnotes>
<para>If CPSR.DIT is 1 and this instruction passes its condition execution check:</para>
<list type="unordered">
<listitem><content>The execution time of this instruction is independent of:<list type="unordered"><listitem><content>The values of the data supplied in any of its registers.</content></listitem><listitem><content>The values of the NZCV flags.</content></listitem></list></content></listitem>
<listitem><content>The response of this instruction to asynchronous exceptions does not vary based on:<list type="unordered"><listitem><content>The values of the data supplied in any of its registers.</content></listitem><listitem><content>The values of the NZCV flags.</content></listitem></list></content></listitem>
</list>
</operationalnotes>
<alias_list howmany="0"></alias_list>
<classes>
<classesintro count="2">
<txt>It has encodings from the following instruction sets:</txt>
<txt> A32 (</txt>
<a href="#iclass_a1">A1</a>
<txt>)</txt>
<txt> and </txt>
<txt> T32 (</txt>
<a href="#iclass_t1">T1</a>
<txt>)</txt>
<txt>.</txt>
</classesintro>
<iclass name="A1" oneof="2" id="iclass_a1" no_encodings="2" isa="A32">
<docvars>
<docvar key="armarmheading" value="A1" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="A32" />
<docvar key="mnemonic" value="VZIP" />
</docvars>
<iclassintro count="2"></iclassintro>
<regdiagram form="32" psname="aarch32/instrs/VZIP/T1A1_A.txt">
<box hibit="31" width="9" settings="9">
<c>1</c>
<c>1</c>
<c>1</c>
<c>1</c>
<c>0</c>
<c>0</c>
<c>1</c>
<c>1</c>
<c>1</c>
</box>
<box hibit="22" name="D" usename="1">
<c></c>
</box>
<box hibit="21" width="2" settings="2">
<c>1</c>
<c>1</c>
</box>
<box hibit="19" width="2" name="size" usename="1">
<c colspan="2"></c>
</box>
<box hibit="17" width="2" name="opc1" settings="2">
<c>1</c>
<c>0</c>
</box>
<box hibit="15" width="4" name="Vd" usename="1">
<c colspan="4"></c>
</box>
<box hibit="11" settings="1">
<c>0</c>
</box>
<box hibit="10" width="4" name="opc2" settings="4">
<c>0</c>
<c>0</c>
<c>1</c>
<c>1</c>
</box>
<box hibit="6" name="Q" usename="1">
<c></c>
</box>
<box hibit="5" name="M" usename="1">
<c></c>
</box>
<box hibit="4" settings="1">
<c>0</c>
</box>
<box hibit="3" width="4" name="Vm" usename="1">
<c colspan="4"></c>
</box>
</regdiagram>
<encoding name="VZIP_A1_D" oneofinclass="2" oneof="4" label="64-bit SIMD vector" bitdiffs="Q == 0">
<docvars>
<docvar key="armarmheading" value="A1" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="A32" />
<docvar key="mnemonic" value="VZIP" />
<docvar key="simdvectorsize" value="double" />
</docvars>
<box hibit="6" width="1" name="Q">
<c>0</c>
</box>
<asmtemplate><text>VZIP</text><text>{</text><a link="sa_c_1" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;c&gt;</a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;q&gt;</a><text>}</text><text>.</text><a link="sa_dt_1" hover="Data type for elements of vectors (field &quot;size&quot;)">&lt;dt&gt;</a><text> </text><a link="sa_dd" hover="64-bit SIMD&amp;FP destination register (field &quot;D:Vd&quot;)">&lt;Dd&gt;</a><text>, </text><a link="sa_dm" hover="64-bit SIMD&amp;FP source register (field &quot;M:Vm&quot;)">&lt;Dm&gt;</a></asmtemplate>
</encoding>
<encoding name="VZIP_A1_Q" oneofinclass="2" oneof="4" label="128-bit SIMD vector" bitdiffs="Q == 1">
<docvars>
<docvar key="armarmheading" value="A1" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="A32" />
<docvar key="mnemonic" value="VZIP" />
<docvar key="simdvectorsize" value="quad" />
</docvars>
<box hibit="6" width="1" name="Q">
<c>1</c>
</box>
<asmtemplate><text>VZIP</text><text>{</text><a link="sa_c_1" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;c&gt;</a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;q&gt;</a><text>}</text><text>.</text><a link="sa_dt" hover="Data type for elements of vectors (field &quot;size&quot;)">&lt;dt&gt;</a><text> </text><a link="sa_qd" hover="128-bit SIMD&amp;FP destination register (field &quot;D:Vd&quot;)">&lt;Qd&gt;</a><text>, </text><a link="sa_qm" hover="128-bit SIMD&amp;FP source register (field &quot;M:Vm&quot;)">&lt;Qm&gt;</a></asmtemplate>
</encoding>
<ps_section howmany="1">
<ps name="aarch32/instrs/VZIP/T1A1_A.txt" mylink="aarch32.instrs.VZIP.T1A1_A.txt" enclabels="" sections="1" secttype="noheading">
<pstext mayhavelinks="1" section="Decode" rep_section="decode">if size == '11' || (Q == '0' &amp;&amp; size == '10') then UNDEFINED;
if Q == '1' &amp;&amp; (Vd&lt;0&gt; == '1' || Vm&lt;0&gt; == '1') then UNDEFINED;
quadword_operation = (Q == '1'); esize = 8 &lt;&lt; <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(size);
d = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(D:Vd); m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(M:Vm);</pstext>
</ps>
</ps_section>
</iclass>
<iclass name="T1" oneof="2" id="iclass_t1" no_encodings="2" isa="T32">
<docvars>
<docvar key="armarmheading" value="T1" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="T32" />
<docvar key="mnemonic" value="VZIP" />
</docvars>
<iclassintro count="2"></iclassintro>
<regdiagram form="16x2" psname="aarch32/instrs/VZIP/T1A1_A.txt">
<box hibit="31" width="9" settings="9">
<c>1</c>
<c>1</c>
<c>1</c>
<c>1</c>
<c>1</c>
<c>1</c>
<c>1</c>
<c>1</c>
<c>1</c>
</box>
<box hibit="22" name="D" usename="1">
<c></c>
</box>
<box hibit="21" width="2" settings="2">
<c>1</c>
<c>1</c>
</box>
<box hibit="19" width="2" name="size" usename="1">
<c colspan="2"></c>
</box>
<box hibit="17" width="2" name="opc1" settings="2">
<c>1</c>
<c>0</c>
</box>
<box hibit="15" width="4" name="Vd" usename="1">
<c colspan="4"></c>
</box>
<box hibit="11" settings="1">
<c>0</c>
</box>
<box hibit="10" width="4" name="opc2" settings="4">
<c>0</c>
<c>0</c>
<c>1</c>
<c>1</c>
</box>
<box hibit="6" name="Q" usename="1">
<c></c>
</box>
<box hibit="5" name="M" usename="1">
<c></c>
</box>
<box hibit="4" settings="1">
<c>0</c>
</box>
<box hibit="3" width="4" name="Vm" usename="1">
<c colspan="4"></c>
</box>
</regdiagram>
<encoding name="VZIP_T1_D" oneofinclass="2" oneof="4" label="64-bit SIMD vector" bitdiffs="Q == 0">
<docvars>
<docvar key="armarmheading" value="T1" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="T32" />
<docvar key="mnemonic" value="VZIP" />
<docvar key="simdvectorsize" value="double" />
</docvars>
<box hibit="6" width="1" name="Q">
<c>0</c>
</box>
<asmtemplate><text>VZIP</text><text>{</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;c&gt;</a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;q&gt;</a><text>}</text><text>.</text><a link="sa_dt_1" hover="Data type for elements of vectors (field &quot;size&quot;)">&lt;dt&gt;</a><text> </text><a link="sa_dd" hover="64-bit SIMD&amp;FP destination register (field &quot;D:Vd&quot;)">&lt;Dd&gt;</a><text>, </text><a link="sa_dm" hover="64-bit SIMD&amp;FP source register (field &quot;M:Vm&quot;)">&lt;Dm&gt;</a></asmtemplate>
</encoding>
<encoding name="VZIP_T1_Q" oneofinclass="2" oneof="4" label="128-bit SIMD vector" bitdiffs="Q == 1">
<docvars>
<docvar key="armarmheading" value="T1" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="T32" />
<docvar key="mnemonic" value="VZIP" />
<docvar key="simdvectorsize" value="quad" />
</docvars>
<box hibit="6" width="1" name="Q">
<c>1</c>
</box>
<asmtemplate><text>VZIP</text><text>{</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;c&gt;</a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;q&gt;</a><text>}</text><text>.</text><a link="sa_dt" hover="Data type for elements of vectors (field &quot;size&quot;)">&lt;dt&gt;</a><text> </text><a link="sa_qd" hover="128-bit SIMD&amp;FP destination register (field &quot;D:Vd&quot;)">&lt;Qd&gt;</a><text>, </text><a link="sa_qm" hover="128-bit SIMD&amp;FP source register (field &quot;M:Vm&quot;)">&lt;Qm&gt;</a></asmtemplate>
</encoding>
<ps_section howmany="1">
<ps name="aarch32/instrs/VZIP/T1A1_A.txt" mylink="aarch32.instrs.VZIP.T1A1_A.txt" enclabels="" sections="1" secttype="noheading">
<pstext mayhavelinks="1" section="Decode" rep_section="decode">if size == '11' || (Q == '0' &amp;&amp; size == '10') then UNDEFINED;
if Q == '1' &amp;&amp; (Vd&lt;0&gt; == '1' || Vm&lt;0&gt; == '1') then UNDEFINED;
quadword_operation = (Q == '1'); esize = 8 &lt;&lt; <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(size);
d = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(D:Vd); m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(M:Vm);</pstext>
</ps>
</ps_section>
</iclass>
</classes>
<explanations scope="all">
<explanation enclist="VZIP_A1_Q" symboldefcount="1">
<symbol link="sa_c_1">&lt;c&gt;</symbol>
<account encodedin="">
<docvars>
<docvar key="armarmheading" value="A1" />
<docvar key="isa" value="A32" />
</docvars>
<intro>
<para>For encoding A1: see <xref linkend="Babbefhf">Standard assembler syntax fields</xref>. This encoding must be unconditional.</para>
</intro>
</account>
</explanation>
<explanation enclist="VZIP_T1_Q" symboldefcount="2">
<symbol link="sa_c">&lt;c&gt;</symbol>
<account encodedin="">
<docvars>
<docvar key="armarmheading" value="T1" />
<docvar key="isa" value="T32" />
</docvars>
<intro>
<para>For encoding T1: see <xref linkend="Babbefhf">Standard assembler syntax fields</xref>.</para>
</intro>
</account>
</explanation>
<explanation enclist="VZIP_A1_Q, VZIP_T1_Q" symboldefcount="1">
<symbol link="sa_q">&lt;q&gt;</symbol>
<account encodedin="">
<intro>
<para>See <xref linkend="Babbefhf">Standard assembler syntax fields</xref>.</para>
</intro>
</account>
</explanation>
<explanation enclist="VZIP_A1_D, VZIP_T1_D" symboldefcount="1">
<symbol link="sa_dt_1">&lt;dt&gt;</symbol>
<definition encodedin="size">
<intro>For the 64-bit SIMD vector variant: is the data type for the elements of the vectors, </intro>
<table class="valuetable">
<tgroup cols="2">
<thead>
<row>
<entry class="bitfield">size</entry>
<entry class="symbol">&lt;dt&gt;</entry>
</row>
</thead>
<tbody>
<row>
<entry class="bitfield">00</entry>
<entry class="symbol">8</entry>
</row>
<row>
<entry class="bitfield">01</entry>
<entry class="symbol">16</entry>
</row>
<row>
<entry class="bitfield">1x</entry>
<entry class="symbol">RESERVED</entry>
</row>
</tbody>
</tgroup>
</table>
</definition>
</explanation>
<explanation enclist="VZIP_A1_Q, VZIP_T1_Q" symboldefcount="2">
<symbol link="sa_dt">&lt;dt&gt;</symbol>
<definition encodedin="size">
<intro>For the 128-bit SIMD vector variant: is the data type for the elements of the vectors, </intro>
<table class="valuetable">
<tgroup cols="2">
<thead>
<row>
<entry class="bitfield">size</entry>
<entry class="symbol">&lt;dt&gt;</entry>
</row>
</thead>
<tbody>
<row>
<entry class="bitfield">00</entry>
<entry class="symbol">8</entry>
</row>
<row>
<entry class="bitfield">01</entry>
<entry class="symbol">16</entry>
</row>
<row>
<entry class="bitfield">10</entry>
<entry class="symbol">32</entry>
</row>
<row>
<entry class="bitfield">11</entry>
<entry class="symbol">RESERVED</entry>
</row>
</tbody>
</tgroup>
</table>
</definition>
</explanation>
<explanation enclist="VZIP_A1_Q, VZIP_T1_Q" symboldefcount="1">
<symbol link="sa_qd">&lt;Qd&gt;</symbol>
<account encodedin="D:Vd">
<intro>
<para>Is the 128-bit name of the SIMD&amp;FP destination register, encoded in the "D:Vd" field as &lt;Qd&gt;*2.</para>
</intro>
</account>
</explanation>
<explanation enclist="VZIP_A1_Q, VZIP_T1_Q" symboldefcount="1">
<symbol link="sa_qm">&lt;Qm&gt;</symbol>
<account encodedin="M:Vm">
<intro>
<para>Is the 128-bit name of the SIMD&amp;FP source register, encoded in the "M:Vm" field as &lt;Qm&gt;*2.</para>
</intro>
</account>
</explanation>
<explanation enclist="VZIP_A1_D, VZIP_T1_D" symboldefcount="1">
<symbol link="sa_dd">&lt;Dd&gt;</symbol>
<account encodedin="D:Vd">
<intro>
<para>Is the 64-bit name of the SIMD&amp;FP destination register, encoded in the "D:Vd" field.</para>
</intro>
</account>
</explanation>
<explanation enclist="VZIP_A1_D, VZIP_T1_D" symboldefcount="1">
<symbol link="sa_dm">&lt;Dm&gt;</symbol>
<account encodedin="M:Vm">
<intro>
<para>Is the 64-bit name of the SIMD&amp;FP source register, encoded in the "M:Vm" field.</para>
</intro>
</account>
</explanation>
</explanations>
<ps_section howmany="1">
<ps name="aarch32/instrs/VZIP/Op_A.txt" mylink="execute" enclabels="" sections="1" secttype="Operation">
<pstext mayhavelinks="1" section="Execute" rep_section="execute">if <a link="impl-aarch32.ConditionPassed.0" file="shared_pseudocode.xml" hover="function: boolean ConditionPassed()">ConditionPassed</a>() then
EncodingSpecificOperations(); <a link="impl-aarch32.CheckAdvSIMDEnabled.0" file="shared_pseudocode.xml" hover="function: CheckAdvSIMDEnabled()">CheckAdvSIMDEnabled</a>();
if quadword_operation then
if d == m then
<a link="impl-aarch32.Q.write.1" file="shared_pseudocode.xml" hover="accessor: Q[integer n] = bits(128) value">Q</a>[d&gt;&gt;1] = bits(128) UNKNOWN;
else
bits(256) zipped_q;
for e = 0 to (128 DIV esize) - 1
<a link="impl-shared.Elem.write.3" file="shared_pseudocode.xml" hover="accessor: Elem[bits(N) &amp;vector, integer e, integer size] = bits(size) value">Elem</a>[zipped_q,2*e,esize] = <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>[<a link="impl-aarch32.Q.read.1" file="shared_pseudocode.xml" hover="accessor: bits(128) Q[integer n]">Q</a>[d&gt;&gt;1],e,esize];
<a link="impl-shared.Elem.write.3" file="shared_pseudocode.xml" hover="accessor: Elem[bits(N) &amp;vector, integer e, integer size] = bits(size) value">Elem</a>[zipped_q,2*e+1,esize] = <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>[<a link="impl-aarch32.Q.read.1" file="shared_pseudocode.xml" hover="accessor: bits(128) Q[integer n]">Q</a>[m&gt;&gt;1],e,esize];
<a link="impl-aarch32.Q.write.1" file="shared_pseudocode.xml" hover="accessor: Q[integer n] = bits(128) value">Q</a>[d&gt;&gt;1] = zipped_q&lt;127:0&gt;; <a link="impl-aarch32.Q.write.1" file="shared_pseudocode.xml" hover="accessor: Q[integer n] = bits(128) value">Q</a>[m&gt;&gt;1] = zipped_q&lt;255:128&gt;;
else
if d == m then
<a link="impl-aarch32.D.write.1" file="shared_pseudocode.xml" hover="accessor: D[integer n] = bits(64) value">D</a>[d] = bits(64) UNKNOWN;
else
bits(128) zipped_d;
for e = 0 to (64 DIV esize) - 1
<a link="impl-shared.Elem.write.3" file="shared_pseudocode.xml" hover="accessor: Elem[bits(N) &amp;vector, integer e, integer size] = bits(size) value">Elem</a>[zipped_d,2*e,esize] = <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>[<a link="impl-aarch32.D.read.1" file="shared_pseudocode.xml" hover="accessor: bits(64) D[integer n]">D</a>[d],e,esize];
<a link="impl-shared.Elem.write.3" file="shared_pseudocode.xml" hover="accessor: Elem[bits(N) &amp;vector, integer e, integer size] = bits(size) value">Elem</a>[zipped_d,2*e+1,esize] = <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>[<a link="impl-aarch32.D.read.1" file="shared_pseudocode.xml" hover="accessor: bits(64) D[integer n]">D</a>[m],e,esize];
<a link="impl-aarch32.D.write.1" file="shared_pseudocode.xml" hover="accessor: D[integer n] = bits(64) value">D</a>[d] = zipped_d&lt;63:0&gt;; <a link="impl-aarch32.D.write.1" file="shared_pseudocode.xml" hover="accessor: D[integer n] = bits(64) value">D</a>[m] = zipped_d&lt;127:64&gt;;</pstext>
</ps>
</ps_section>
</instructionsection>