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https://github.com/pound-emu/ballistic.git
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345 lines
17 KiB
XML
345 lines
17 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="fmul_z_zzi" title="FMUL (indexed)" 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="FMUL" />
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</docvars>
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<heading>FMUL (indexed)</heading>
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<desc>
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<brief>Floating-point multiply by indexed elements</brief>
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<description>
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<para>Multiply all floating-point elements within each 128-bit segment of the first source vector by the specified element in the corresponding second source vector segment. The results are placed in the corresponding elements of the destination vector.</para>
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<para>The elements within the second source vector are specified using an immediate index which selects the same element position within each 128-bit vector segment. The index range is from 0 to one less than the number of elements per 128-bit segment, encoded in 1 to 3 bits depending on the size of the element. 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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</desc>
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<alias_list howmany="0"></alias_list>
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<classes>
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<classesintro count="3">
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<txt>It has encodings from 3 classes:</txt>
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<a href="#iclass_half">Half-precision</a>
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<txt>, </txt>
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<a href="#iclass_single">Single-precision</a>
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<txt> and </txt>
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<a href="#iclass_double">Double-precision</a>
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</classesintro>
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<iclass name="Half-precision" oneof="3" id="iclass_half" no_encodings="1" isa="A64">
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<docvars>
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<docvar key="datatype" value="half" />
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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="FMUL" />
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</docvars>
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<iclassintro count="1"></iclassintro>
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<regdiagram form="32" psname="FMUL-Z.ZZi-H">
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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>0</c>
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</box>
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<box hibit="23" settings="1">
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<c>0</c>
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</box>
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<box hibit="22" name="i3h" usename="1">
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<c></c>
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</box>
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<box hibit="21" settings="1">
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<c>1</c>
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</box>
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<box hibit="20" width="2" name="i3l" usename="1">
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<c colspan="2"></c>
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</box>
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<box hibit="18" width="3" name="Zm" usename="1">
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<c colspan="3"></c>
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</box>
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<box hibit="15" width="4" settings="4">
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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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</box>
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<box hibit="11" name="o2" settings="1">
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<c>0</c>
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</box>
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<box hibit="10" settings="1">
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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="fmul_z_zzi_h" oneofinclass="1" oneof="3" label="">
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<docvars>
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<docvar key="datatype" value="half" />
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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="FMUL" />
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</docvars>
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<asmtemplate><text>FMUL </text><a link="sa_zd" hover="Destination scalable vector register (field "Zd")"><Zd></a><text>.H, </text><a link="sa_zn" hover="First source scalable vector register (field "Zn")"><Zn></a><text>.H, </text><a link="sa_zm_1" hover="Second source scalable vector register Z0-Z7 (field "Zm")"><Zm></a><text>.H[</text><a link="sa_imm_1" hover="Immediate index [0-7] (field "i3h:i3l")"><imm></a><text>]</text></asmtemplate>
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</encoding>
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<ps_section howmany="1">
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<ps name="FMUL-Z.ZZi-H" mylink="FMUL-Z.ZZi-H" 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 = 16;
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integer index = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(i3h:i3l);
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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 m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zm);
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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);</pstext>
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</ps>
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</ps_section>
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</iclass>
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<iclass name="Single-precision" oneof="3" id="iclass_single" no_encodings="1" isa="A64">
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<docvars>
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<docvar key="datatype" value="single" />
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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="FMUL" />
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</docvars>
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<iclassintro count="1"></iclassintro>
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<regdiagram form="32" psname="FMUL-Z.ZZi-S" 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>0</c>
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</box>
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<box hibit="23" name="size<1>" usename="1" settings="1">
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<c>1</c>
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</box>
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<box hibit="22" name="size<0>" usename="1" settings="1">
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<c>0</c>
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</box>
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<box hibit="21" settings="1">
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<c>1</c>
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</box>
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<box hibit="20" width="2" name="i2" usename="1">
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<c colspan="2"></c>
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</box>
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<box hibit="18" width="3" name="Zm" usename="1">
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<c colspan="3"></c>
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</box>
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<box hibit="15" width="4" settings="4">
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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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</box>
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<box hibit="11" name="o2" settings="1">
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<c>0</c>
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</box>
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<box hibit="10" settings="1">
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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="fmul_z_zzi_s" oneofinclass="1" oneof="3" label="">
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<docvars>
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<docvar key="datatype" value="single" />
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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="FMUL" />
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</docvars>
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<asmtemplate><text>FMUL </text><a link="sa_zd" hover="Destination scalable vector register (field "Zd")"><Zd></a><text>.S, </text><a link="sa_zn" hover="First source scalable vector register (field "Zn")"><Zn></a><text>.S, </text><a link="sa_zm_1" hover="Second source scalable vector register Z0-Z7 (field "Zm")"><Zm></a><text>.S[</text><a link="sa_imm_2" hover="Immediate index [0-3] (field "i2")"><imm></a><text>]</text></asmtemplate>
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</encoding>
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<ps_section howmany="1">
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<ps name="FMUL-Z.ZZi-S" mylink="FMUL-Z.ZZi-S" 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 = 32;
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integer index = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(i2);
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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 m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zm);
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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);</pstext>
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</ps>
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</ps_section>
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</iclass>
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<iclass name="Double-precision" oneof="3" id="iclass_double" no_encodings="1" isa="A64">
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<docvars>
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<docvar key="datatype" value="double" />
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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="FMUL" />
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</docvars>
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<iclassintro count="1"></iclassintro>
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<regdiagram form="32" psname="FMUL-Z.ZZi-D" 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>0</c>
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</box>
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<box hibit="23" name="size<1>" usename="1" settings="1">
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<c>1</c>
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</box>
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<box hibit="22" name="size<0>" usename="1" settings="1">
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<c>1</c>
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</box>
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<box hibit="21" settings="1">
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<c>1</c>
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</box>
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<box hibit="20" name="i1" usename="1">
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<c></c>
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</box>
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<box hibit="19" width="4" name="Zm" usename="1">
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<c colspan="4"></c>
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</box>
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<box hibit="15" width="4" settings="4">
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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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</box>
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<box hibit="11" name="o2" settings="1">
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<c>0</c>
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</box>
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<box hibit="10" settings="1">
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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="fmul_z_zzi_d" oneofinclass="1" oneof="3" label="">
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<docvars>
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<docvar key="datatype" value="double" />
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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="FMUL" />
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</docvars>
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<asmtemplate><text>FMUL </text><a link="sa_zd" hover="Destination scalable vector register (field "Zd")"><Zd></a><text>.D, </text><a link="sa_zn" hover="First source scalable vector register (field "Zn")"><Zn></a><text>.D, </text><a link="sa_zm" hover="Second source scalable vector register Z0-Z15 (field "Zm")"><Zm></a><text>.D[</text><a link="sa_imm" hover="Immediate index [0-1] (field "i1")"><imm></a><text>]</text></asmtemplate>
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</encoding>
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<ps_section howmany="1">
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<ps name="FMUL-Z.ZZi-D" mylink="FMUL-Z.ZZi-D" 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 = 64;
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integer index = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(i1);
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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 m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zm);
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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);</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="fmul_z_zzi_d, fmul_z_zzi_h, fmul_z_zzi_s" 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="fmul_z_zzi_d, fmul_z_zzi_h, fmul_z_zzi_s" 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 first 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="fmul_z_zzi_h, fmul_z_zzi_s" symboldefcount="1">
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<symbol link="sa_zm_1"><Zm></symbol>
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<account encodedin="Zm">
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<intro>
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<para>For the half-precision and single-precision variant: is the name of the second source scalable vector register Z0-Z7, 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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<explanation enclist="fmul_z_zzi_d" symboldefcount="2">
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<symbol link="sa_zm"><Zm></symbol>
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<account encodedin="Zm">
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<docvars>
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<docvar key="datatype" value="double" />
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</docvars>
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<intro>
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<para>For the double-precision variant: is the name of the second source scalable vector register Z0-Z15, 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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<explanation enclist="fmul_z_zzi_h" symboldefcount="1">
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<symbol link="sa_imm_1"><imm></symbol>
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<account encodedin="i3h:i3l">
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<docvars>
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<docvar key="datatype" value="half" />
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</docvars>
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<intro>
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<para>For the half-precision variant: is the immediate index, in the range 0 to 7, encoded in the "i3h:i3l" fields.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="fmul_z_zzi_s" symboldefcount="2">
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<symbol link="sa_imm_2"><imm></symbol>
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<account encodedin="i2">
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<docvars>
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<docvar key="datatype" value="single" />
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</docvars>
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<intro>
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<para>For the single-precision variant: is the immediate index, in the range 0 to 3, encoded in the "i2" field.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="fmul_z_zzi_d" symboldefcount="3">
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<symbol link="sa_imm"><imm></symbol>
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<account encodedin="i1">
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<docvars>
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<docvar key="datatype" value="double" />
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</docvars>
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<intro>
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<para>For the double-precision variant: is the immediate index, in the range 0 to 1, encoded in the "i1" 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="FMUL-Z.ZZi-H" 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 eltspersegment = 128 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>[n, VL];
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bits(VL) operand2 = <a link="impl-aarch64.Z.read.2" file="shared_pseudocode.xml" hover="accessor: bits(width) Z[integer n, integer width]">Z</a>[m, VL];
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bits(VL) result;
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for e = 0 to elements-1
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integer segmentbase = e - (e MOD eltspersegment);
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integer s = segmentbase + index;
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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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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, s, 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.FPMul.3" file="shared_pseudocode.xml" hover="function: bits(N) FPMul(bits(N) op1, bits(N) op2, FPCRType fpcr)">FPMul</a>(element1, element2, FPCR[]);
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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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