mirror of
https://github.com/pound-emu/ballistic.git
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172 lines
9.5 KiB
XML
172 lines
9.5 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="and_p_p_pp" title="AND (predicates)" type="instruction">
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<docvars>
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<docvar key="cond-setting" value="no-s" />
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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="AND" />
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</docvars>
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<heading>AND (predicates)</heading>
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<desc>
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<brief>Bitwise AND predicates</brief>
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<description>
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<para>Bitwise AND active elements of the second source predicate with corresponding elements of the first source predicate and place the results in the corresponding elements of the destination predicate. Inactive elements in the destination predicate register are set to zero. Does not set the condition flags.</para>
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</description>
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<status>Green</status>
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<predicated>True</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="1">
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<alias_list_intro>This instruction is used by the alias </alias_list_intro>
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<aliasref aliaspageid="MOV_and_p_p_pp" aliasfile="mov_and_p_p_pp.xml" hover="Move predicates (zeroing)" punct=".">
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<text>MOV (predicate, predicated, zeroing)</text>
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<aliaspref>S == '0' && Pn == Pm</aliaspref>
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</aliasref>
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<alias_list_outro>
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<text> See </text>
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<aliastablelink />
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<text> below for details of when the alias is preferred.</text>
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</alias_list_outro>
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</alias_list>
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<classes>
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<iclass name="Not setting the condition flags" oneof="1" id="iclass_no_s" no_encodings="1" isa="A64">
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<docvars>
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<docvar key="cond-setting" value="no-s" />
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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="AND" />
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</docvars>
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<iclassintro count="1"></iclassintro>
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<regdiagram form="32" psname="AND-P.P.PP-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>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" name="op" settings="1">
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<c>0</c>
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</box>
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<box hibit="22" name="S" usename="1" settings="1">
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<c>0</c>
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</box>
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<box hibit="21" width="2" settings="2">
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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="19" width="4" name="Pm" usename="1">
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<c colspan="4"></c>
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</box>
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<box hibit="15" width="2" settings="2">
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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="13" width="4" name="Pg" usename="1">
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<c colspan="4"></c>
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</box>
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<box hibit="9" name="o2" settings="1">
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<c>0</c>
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</box>
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<box hibit="8" width="4" name="Pn" usename="1">
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<c colspan="4"></c>
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</box>
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<box hibit="4" name="o3" settings="1">
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<c>0</c>
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</box>
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<box hibit="3" width="4" name="Pd" usename="1">
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<c colspan="4"></c>
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</box>
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</regdiagram>
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<encoding name="and_p_p_pp_z" oneofinclass="1" oneof="1" label="">
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<docvars>
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<docvar key="cond-setting" value="no-s" />
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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="AND" />
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</docvars>
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<asmtemplate><text>AND </text><a link="sa_pd" hover="Destination scalable predicate register (field "Pd")"><Pd></a><text>.B, </text><a link="sa_pg" hover="Governing scalable predicate register (field "Pg")"><Pg></a><text>/Z, </text><a link="sa_pn" hover="First source scalable predicate register (field "Pn")"><Pn></a><text>.B, </text><a link="sa_pm" hover="Second source scalable predicate register (field "Pm")"><Pm></a><text>.B</text></asmtemplate>
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</encoding>
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<ps_section howmany="1">
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<ps name="AND-P.P.PP-Z" mylink="AND-P.P.PP-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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constant integer esize = 8;
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integer g = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Pg);
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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>(Pn);
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integer m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Pm);
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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>(Pd);
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boolean setflags = 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="and_p_p_pp_z" symboldefcount="1">
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<symbol link="sa_pd"><Pd></symbol>
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<account encodedin="Pd">
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<intro>
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<para>Is the name of the destination scalable predicate register, encoded in the "Pd" field.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="and_p_p_pp_z" symboldefcount="1">
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<symbol link="sa_pg"><Pg></symbol>
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<account encodedin="Pg">
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<intro>
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<para>Is the name of the governing scalable predicate register, encoded in the "Pg" field.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="and_p_p_pp_z" symboldefcount="1">
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<symbol link="sa_pn"><Pn></symbol>
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<account encodedin="Pn">
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<intro>
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<para>Is the name of the first source scalable predicate register, encoded in the "Pn" field.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="and_p_p_pp_z" symboldefcount="1">
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<symbol link="sa_pm"><Pm></symbol>
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<account encodedin="Pm">
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<intro>
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<para>Is the name of the second source scalable predicate register, encoded in the "Pm" 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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<aliastablehook anchor="aliasconditions">Alias Conditions</aliastablehook>
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<ps_section howmany="1">
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<ps name="AND-P.P.PP-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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bits(PL) mask = <a link="impl-aarch64.P.read.2" file="shared_pseudocode.xml" hover="accessor: bits(width) P[integer n, integer width]">P</a>[g, PL];
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bits(PL) operand1 = <a link="impl-aarch64.P.read.2" file="shared_pseudocode.xml" hover="accessor: bits(width) P[integer n, integer width]">P</a>[n, PL];
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bits(PL) operand2 = <a link="impl-aarch64.P.read.2" file="shared_pseudocode.xml" hover="accessor: bits(width) P[integer n, integer width]">P</a>[m, PL];
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bits(PL) result;
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constant integer psize = esize DIV 8;
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for e = 0 to elements-1
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bit element1 = <a link="impl-aarch64.PredicateElement.3" file="shared_pseudocode.xml" hover="function: bit PredicateElement(bits(N) pred, integer e, integer esize)">PredicateElement</a>(operand1, e, esize);
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bit element2 = <a link="impl-aarch64.PredicateElement.3" file="shared_pseudocode.xml" hover="function: bit PredicateElement(bits(N) pred, integer e, integer esize)">PredicateElement</a>(operand2, e, esize);
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if <a link="impl-aarch64.ActivePredicateElement.3" file="shared_pseudocode.xml" hover="function: boolean ActivePredicateElement(bits(N) pred, integer e, integer esize)">ActivePredicateElement</a>(mask, e, esize) then
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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, psize] = <a link="impl-shared.ZeroExtend.2" file="shared_pseudocode.xml" hover="function: bits(N) ZeroExtend(bits(M) x, integer N)">ZeroExtend</a>(element1 AND element2, psize);
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else
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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, psize] = <a link="impl-shared.ZeroExtend.2" file="shared_pseudocode.xml" hover="function: bits(N) ZeroExtend(bits(M) x, integer N)">ZeroExtend</a>('0', psize);
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if setflags then
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PSTATE.<N,Z,C,V> = <a link="impl-aarch64.PredTest.3" file="shared_pseudocode.xml" hover="function: bits(4) PredTest(bits(N) mask, bits(N) result, integer esize)">PredTest</a>(mask, result, esize);
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<a link="impl-aarch64.P.write.2" file="shared_pseudocode.xml" hover="accessor: P[integer n, integer width] = bits(width) value">P</a>[d, PL] = result;</pstext>
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</ps>
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</ps_section>
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</instructionsection>
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