mirror of
https://github.com/pound-emu/ballistic.git
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172 lines
9.8 KiB
XML
172 lines
9.8 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="fminnm_z_p_zz" title="FMINNM (vectors)" 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="FMINNM" />
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</docvars>
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<heading>FMINNM (vectors)</heading>
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<desc>
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<brief>Floating-point minimum number (predicated)</brief>
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<description>
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<para>Determine the minimum number value of active floating-point elements of the second source vector and corresponding floating-point elements of the first source vector and destructively place the results in the corresponding elements of the first source vector. If one element value is numeric and the other is a quiet NaN, then the result is the numeric value. Inactive elements in the destination vector register remain unmodified.</para>
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</description>
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<status>Green</status>
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<predicated>True</predicated>
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<takes_movprfx>True</takes_movprfx>
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<takes_pred_movprfx>True</takes_pred_movprfx>
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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="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="FMINNM" />
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</docvars>
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<iclassintro count="1"></iclassintro>
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<regdiagram form="32" psname="FMINNM-Z.P.ZZ-_" 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>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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<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" settings="2" constraint="!= 00">
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<c colspan="2">!= 00</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="3" name="opc<3:1>" settings="3">
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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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</box>
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<box hibit="16" name="opc<0>" settings="1">
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<c>1</c>
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</box>
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<box hibit="15" width="3" settings="3">
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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="12" width="3" name="Pg" usename="1">
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<c colspan="3"></c>
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</box>
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<box hibit="9" width="5" name="Zm" 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="Zdn" 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="fminnm_z_p_zz_" 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="FMINNM" />
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</docvars>
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<asmtemplate><text>FMINNM </text><a link="sa_zdn" hover="First source and destination scalable vector register (field "Zdn")"><Zdn></a><text>.</text><a link="sa_t" hover="Size specifier (field "size") [D,H,S]"><T></a><text>, </text><a link="sa_pg" hover="Governing scalable predicate register P0-P7 (field "Pg")"><Pg></a><text>/M, </text><a link="sa_zdn" hover="First source and destination scalable vector register (field "Zdn")"><Zdn></a><text>.</text><a link="sa_t" hover="Size specifier (field "size") [D,H,S]"><T></a><text>, </text><a link="sa_zm" hover="Second source scalable vector register (field "Zm")"><Zm></a><text>.</text><a link="sa_t" hover="Size specifier (field "size") [D,H,S]"><T></a></asmtemplate>
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</encoding>
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<ps_section howmany="1">
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<ps name="FMINNM-Z.P.ZZ-_" mylink="FMINNM-Z.P.ZZ-_" 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 << <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 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 dn = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zdn);
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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>(Zm);</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="fminnm_z_p_zz_" symboldefcount="1">
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<symbol link="sa_zdn"><Zdn></symbol>
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<account encodedin="Zdn">
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<intro>
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<para>Is the name of the first source and destination scalable vector register, encoded in the "Zdn" field.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="fminnm_z_p_zz_" 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">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="fminnm_z_p_zz_" 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 P0-P7, 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="fminnm_z_p_zz_" symboldefcount="1">
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<symbol link="sa_zm"><Zm></symbol>
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<account encodedin="Zm">
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<intro>
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<para>Is the name of the second source scalable vector register, encoded in the "Zm" 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="FMINNM-Z.P.ZZ-_" 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(VL) operand1 = <a link="impl-aarch64.Z.read.2" file="shared_pseudocode.xml" hover="accessor: bits(width) Z[integer n, integer width]">Z</a>[dn, VL];
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bits(VL) operand2 = if <a link="impl-aarch64.AnyActiveElement.2" file="shared_pseudocode.xml" hover="function: boolean AnyActiveElement(bits(N) mask, integer esize)">AnyActiveElement</a>(mask, esize) then <a link="impl-aarch64.Z.read.2" file="shared_pseudocode.xml" hover="accessor: bits(width) Z[integer n, integer width]">Z</a>[m, VL] else <a link="impl-shared.Zeros.1" file="shared_pseudocode.xml" hover="function: bits(N) Zeros(integer N)">Zeros</a>(VL);
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bits(VL) result;
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for e = 0 to elements-1
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bits(esize) element1 = <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>[operand1, 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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bits(esize) element2 = <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>[operand2, e, 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, e, esize] = <a link="impl-shared.FPMinNum.3" file="shared_pseudocode.xml" hover="function: bits(N) FPMinNum(bits(N) op1_in, bits(N) op2_in, FPCRType fpcr)">FPMinNum</a>(element1, element2, FPCR[]);
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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, esize] = element1;
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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>[dn, VL] = result;</pstext>
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</ps>
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</ps_section>
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</instructionsection>
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