mirror of
https://github.com/pound-emu/ballistic.git
synced 2026-01-31 01:15:21 +01:00
153 lines
8.8 KiB
XML
153 lines
8.8 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="udot_z32_zzzi" title="UDOT (2-way, indexed)" type="instruction">
|
|
<docvars>
|
|
<docvar key="instr-class" value="sve2" />
|
|
<docvar key="isa" value="A64" />
|
|
<docvar key="mnemonic" value="UDOT" />
|
|
</docvars>
|
|
<heading>UDOT (2-way, indexed)</heading>
|
|
<desc>
|
|
<brief>Unsigned integer indexed dot product</brief>
|
|
<description>
|
|
<para>The unsigned integer indexed dot product instruction computes the dot product of a group of two unsigned 16-bit integer values held in each 32-bit element of the first source vector multiplied by a group of two unsigned 16-bit integer values in an indexed 32-bit element of the second source vector, and then destructively adds the widened dot product to the corresponding 32-bit element of the destination vector.</para>
|
|
<para>The groups within the second source vector are specified using an immediate index which selects the same group position within each 128-bit vector segment. The index range is from 0 to 3. This instruction is unpredicated.</para>
|
|
</description>
|
|
<status>Green</status>
|
|
<predicated>False</predicated>
|
|
<takes_movprfx>True</takes_movprfx>
|
|
</desc>
|
|
<alias_list howmany="0"></alias_list>
|
|
<classes>
|
|
<iclass name="SVE2" oneof="1" id="iclass_sve2" no_encodings="1" isa="A64">
|
|
<docvars>
|
|
<docvar key="instr-class" value="sve2" />
|
|
<docvar key="isa" value="A64" />
|
|
<docvar key="mnemonic" value="UDOT" />
|
|
</docvars>
|
|
<iclassintro count="1"></iclassintro>
|
|
<arch_variants>
|
|
<arch_variant name="FEAT_SVE2p1" feature="FEAT_SVE2p1" />
|
|
</arch_variants>
|
|
<regdiagram form="32" psname="UDOT-Z32.ZZZi-_" tworows="1">
|
|
<box hibit="31" width="11" settings="11">
|
|
<c>0</c>
|
|
<c>1</c>
|
|
<c>0</c>
|
|
<c>0</c>
|
|
<c>0</c>
|
|
<c>1</c>
|
|
<c>0</c>
|
|
<c>0</c>
|
|
<c>1</c>
|
|
<c>0</c>
|
|
<c>0</c>
|
|
</box>
|
|
<box hibit="20" width="2" name="i2" usename="1">
|
|
<c colspan="2"></c>
|
|
</box>
|
|
<box hibit="18" width="3" name="Zm" usename="1">
|
|
<c colspan="3"></c>
|
|
</box>
|
|
<box hibit="15" width="5" settings="5">
|
|
<c>1</c>
|
|
<c>1</c>
|
|
<c>0</c>
|
|
<c>0</c>
|
|
<c>1</c>
|
|
</box>
|
|
<box hibit="10" name="U" usename="1" settings="1">
|
|
<c>1</c>
|
|
</box>
|
|
<box hibit="9" width="5" name="Zn" usename="1">
|
|
<c colspan="5"></c>
|
|
</box>
|
|
<box hibit="4" width="5" name="Zda" usename="1">
|
|
<c colspan="5"></c>
|
|
</box>
|
|
</regdiagram>
|
|
<encoding name="udot_z32_zzzi_" oneofinclass="1" oneof="1" label="">
|
|
<docvars>
|
|
<docvar key="instr-class" value="sve2" />
|
|
<docvar key="isa" value="A64" />
|
|
<docvar key="mnemonic" value="UDOT" />
|
|
</docvars>
|
|
<asmtemplate><text>UDOT </text><a link="sa_zda" hover="Third source and destination scalable vector register (field "Zda")"><Zda></a><text>.S, </text><a link="sa_zn" hover="First source scalable vector register (field "Zn")"><Zn></a><text>.H, </text><a link="sa_zm" hover="Second source scalable vector register Z0-Z7 (field "Zm")"><Zm></a><text>.H[</text><a link="sa_imm" hover="Immediate index of a pair of two 16-bit elements within each 128-bit vector segment [0-3] (field "i2")"><imm></a><text>]</text></asmtemplate>
|
|
</encoding>
|
|
<ps_section howmany="1">
|
|
<ps name="UDOT-Z32.ZZZi-_" mylink="UDOT-Z32.ZZZi-_" enclabels="" sections="1" secttype="noheading">
|
|
<pstext mayhavelinks="1" section="Decode" rep_section="decode">if !<a link="impl-aarch64.HaveSME2.0" file="shared_pseudocode.xml" hover="function: boolean HaveSME2()">HaveSME2</a>() && !<a link="impl-aarch64.HaveSVE2p1.0" file="shared_pseudocode.xml" hover="function: boolean HaveSVE2p1()">HaveSVE2p1</a>() then UNDEFINED;
|
|
constant integer esize = 32;
|
|
integer index = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(i2);
|
|
integer n = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zn);
|
|
integer m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zm);
|
|
integer da = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zda);</pstext>
|
|
</ps>
|
|
</ps_section>
|
|
</iclass>
|
|
</classes>
|
|
<explanations scope="all">
|
|
<explanation enclist="udot_z32_zzzi_" symboldefcount="1">
|
|
<symbol link="sa_zda"><Zda></symbol>
|
|
<account encodedin="Zda">
|
|
<intro>
|
|
<para>Is the name of the third source and destination scalable vector register, encoded in the "Zda" field.</para>
|
|
</intro>
|
|
</account>
|
|
</explanation>
|
|
<explanation enclist="udot_z32_zzzi_" symboldefcount="1">
|
|
<symbol link="sa_zn"><Zn></symbol>
|
|
<account encodedin="Zn">
|
|
<intro>
|
|
<para>Is the name of the first source scalable vector register, encoded in the "Zn" field.</para>
|
|
</intro>
|
|
</account>
|
|
</explanation>
|
|
<explanation enclist="udot_z32_zzzi_" symboldefcount="1">
|
|
<symbol link="sa_zm"><Zm></symbol>
|
|
<account encodedin="Zm">
|
|
<intro>
|
|
<para>Is the name of the second source scalable vector register Z0-Z7, encoded in the "Zm" field.</para>
|
|
</intro>
|
|
</account>
|
|
</explanation>
|
|
<explanation enclist="udot_z32_zzzi_" symboldefcount="1">
|
|
<symbol link="sa_imm"><imm></symbol>
|
|
<account encodedin="i2">
|
|
<intro>
|
|
<para>Is the immediate index of a pair of two 16-bit elements within each 128-bit vector segment, in the range 0 to 3, encoded in the "i2" field.</para>
|
|
</intro>
|
|
</account>
|
|
</explanation>
|
|
</explanations>
|
|
<ps_section howmany="1">
|
|
<ps name="UDOT-Z32.ZZZi-_" mylink="execute" enclabels="" sections="1" secttype="Operation">
|
|
<pstext mayhavelinks="1" section="Execute" rep_section="execute"><a link="impl-aarch64.CheckSVEEnabled.0" file="shared_pseudocode.xml" hover="function: CheckSVEEnabled()">CheckSVEEnabled</a>();
|
|
constant integer VL = <a link="impl-aarch64.CurrentVL.read.none" file="shared_pseudocode.xml" hover="accessor: integer CurrentVL">CurrentVL</a>;
|
|
constant integer PL = VL DIV 8;
|
|
constant integer elements = VL DIV esize;
|
|
constant integer eltspersegment = 128 DIV esize;
|
|
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];
|
|
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];
|
|
bits(VL) operand3 = <a link="impl-aarch64.Z.read.2" file="shared_pseudocode.xml" hover="accessor: bits(width) Z[integer n, integer width]">Z</a>[da, VL];
|
|
bits(VL) result;
|
|
|
|
for e = 0 to elements-1
|
|
integer segmentbase = e - (e MOD eltspersegment);
|
|
integer s = segmentbase + index;
|
|
bits(esize) res = <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>[operand3, e, esize];
|
|
for i = 0 to 1
|
|
integer element1 = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</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, 2 * e + i, esize DIV 2]);
|
|
integer element2 = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</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>[operand2, 2 * s + i, esize DIV 2]);
|
|
res = res + element1 * element2;
|
|
<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] = res;
|
|
|
|
<a link="impl-aarch64.Z.write.2" file="shared_pseudocode.xml" hover="accessor: Z[integer n, integer width] = bits(width) value">Z</a>[da, VL] = result;</pstext>
|
|
</ps>
|
|
</ps_section>
|
|
</instructionsection>
|