mirror of
https://github.com/pound-emu/ballistic.git
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160 lines
7.9 KiB
XML
160 lines
7.9 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="umin_z_zi" title="UMIN (immediate)" 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="UMIN" />
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</docvars>
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<heading>UMIN (immediate)</heading>
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<desc>
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<brief>Unsigned minimum with immediate (unpredicated)</brief>
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<description>
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<para>Determine the unsigned minimum of an immediate and each element of the source vector, and destructively place the results in the corresponding elements of the source vector. The immediate is an unsigned 8-bit value in the range 0 to 255, inclusive. 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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<takes_movprfx>True</takes_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="UMIN" />
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</docvars>
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<iclassintro count="1"></iclassintro>
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<regdiagram form="32" psname="UMIN-Z.ZI-_" 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" 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="3" settings="3">
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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="18" 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="16" name="U" usename="1" settings="1">
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<c>1</c>
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</box>
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<box hibit="15" width="2" settings="2">
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<c>1</c>
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<c>1</c>
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</box>
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<box hibit="13" name="o2" settings="1">
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<c>0</c>
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</box>
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<box hibit="12" width="8" name="imm8" usename="1">
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<c colspan="8"></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="umin_z_zi_" 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="UMIN" />
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</docvars>
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<asmtemplate><text>UMIN </text><a link="sa_zdn" hover="Source and destination scalable vector register (field "Zdn")"><Zdn></a><text>.</text><a link="sa_t" hover="Size specifier (field "size") [B,D,H,S]"><T></a><text>, </text><a link="sa_zdn" hover="Source and destination scalable vector register (field "Zdn")"><Zdn></a><text>.</text><a link="sa_t" hover="Size specifier (field "size") [B,D,H,S]"><T></a><text>, #</text><a link="sa_imm" hover="Unsigned immediate operand [0-255] (field "imm8")"><imm></a></asmtemplate>
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</encoding>
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<ps_section howmany="1">
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<ps name="UMIN-Z.ZI-_" mylink="UMIN-Z.ZI-_" 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 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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boolean unsigned = TRUE;
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integer imm = <a link="impl-shared.Int.2" file="shared_pseudocode.xml" hover="function: integer Int(bits(N) x, boolean unsigned)">Int</a>(imm8, unsigned);</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="umin_z_zi_" 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 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="umin_z_zi_" 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">B</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="umin_z_zi_" symboldefcount="1">
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<symbol link="sa_imm"><imm></symbol>
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<account encodedin="imm8">
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<intro>
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<para>Is the unsigned immediate operand, in the range 0 to 255, encoded in the "imm8" 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="UMIN-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 elements = VL DIV esize;
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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) result;
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for e = 0 to elements-1
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integer element1 = <a link="impl-shared.Int.2" file="shared_pseudocode.xml" hover="function: integer Int(bits(N) x, boolean unsigned)">Int</a>(<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], unsigned);
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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.Min.2" file="shared_pseudocode.xml" hover="function: integer Min(integer a, integer b)">Min</a>(element1, imm)<esize-1:0>;
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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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