mirror of
https://github.com/pound-emu/ballistic.git
synced 2026-01-31 01:15:21 +01:00
144 lines
8.1 KiB
XML
144 lines
8.1 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="bfmlslb_z_zzz" title="BFMLSLB (vectors)" type="instruction">
|
|
<docvars>
|
|
<docvar key="instr-class" value="sve2" />
|
|
<docvar key="isa" value="A64" />
|
|
<docvar key="mnemonic" value="BFMLSLB" />
|
|
</docvars>
|
|
<heading>BFMLSLB (vectors)</heading>
|
|
<desc>
|
|
<brief>BFloat16 floating-point multiply-subtract long from single-precision (bottom)</brief>
|
|
<description>
|
|
<para>This BFloat16 floating-point multiply-subtract long instruction widens the even-numbered BFloat16 elements in the first source vector and the corresponding elements in the second source vector to single-precision format and then destructively multiplies and subtracts these values without intermediate rounding from the single-precision elements of the destination vector that overlap with the corresponding BFloat16 elements in the source vectors. 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="BFMLSLB" />
|
|
</docvars>
|
|
<iclassintro count="1"></iclassintro>
|
|
<arch_variants>
|
|
<arch_variant name="FEAT_SVE2p1" feature="FEAT_SVE2p1" />
|
|
</arch_variants>
|
|
<regdiagram form="32" psname="BFMLSLB-Z.ZZZ-_" tworows="1">
|
|
<box hibit="31" width="9" settings="9">
|
|
<c>0</c>
|
|
<c>1</c>
|
|
<c>1</c>
|
|
<c>0</c>
|
|
<c>0</c>
|
|
<c>1</c>
|
|
<c>0</c>
|
|
<c>0</c>
|
|
<c>1</c>
|
|
</box>
|
|
<box hibit="22" name="o2" usename="1" settings="1">
|
|
<c>1</c>
|
|
</box>
|
|
<box hibit="21" settings="1">
|
|
<c>1</c>
|
|
</box>
|
|
<box hibit="20" width="5" name="Zm" usename="1">
|
|
<c colspan="5"></c>
|
|
</box>
|
|
<box hibit="15" width="2" settings="2">
|
|
<c>1</c>
|
|
<c>0</c>
|
|
</box>
|
|
<box hibit="13" name="op" usename="1" settings="1">
|
|
<c>1</c>
|
|
</box>
|
|
<box hibit="12" width="2" settings="2">
|
|
<c>0</c>
|
|
<c>0</c>
|
|
</box>
|
|
<box hibit="10" name="T" usename="1" settings="1">
|
|
<c>0</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="bfmlslb_z_zzz_" oneofinclass="1" oneof="1" label="">
|
|
<docvars>
|
|
<docvar key="instr-class" value="sve2" />
|
|
<docvar key="isa" value="A64" />
|
|
<docvar key="mnemonic" value="BFMLSLB" />
|
|
</docvars>
|
|
<asmtemplate><text>BFMLSLB </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 (field "Zm")"><Zm></a><text>.H</text></asmtemplate>
|
|
</encoding>
|
|
<ps_section howmany="1">
|
|
<ps name="BFMLSLB-Z.ZZZ-_" mylink="BFMLSLB-Z.ZZZ-_" 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;
|
|
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);
|
|
boolean op1_neg = TRUE;</pstext>
|
|
</ps>
|
|
</ps_section>
|
|
</iclass>
|
|
</classes>
|
|
<explanations scope="all">
|
|
<explanation enclist="bfmlslb_z_zzz_" 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="bfmlslb_z_zzz_" 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="bfmlslb_z_zzz_" symboldefcount="1">
|
|
<symbol link="sa_zm"><Zm></symbol>
|
|
<account encodedin="Zm">
|
|
<intro>
|
|
<para>Is the name of the second source scalable vector register, encoded in the "Zm" field.</para>
|
|
</intro>
|
|
</account>
|
|
</explanation>
|
|
</explanations>
|
|
<ps_section howmany="1">
|
|
<ps name="BFMLSLB-Z.ZZZ-_" 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 32;
|
|
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
|
|
bits(16) 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, 2 * e + 0, 16];
|
|
bits(16) 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, 2 * e + 0, 16];
|
|
bits(32) element3 = <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, 32];
|
|
if op1_neg then element1 = <a link="impl-shared.BFNeg.1" file="shared_pseudocode.xml" hover="function: bits(16) BFNeg(bits(16) op)">BFNeg</a>(element1);
|
|
<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, 32] = <a link="impl-shared.BFMulAddH.4" file="shared_pseudocode.xml" hover="function: bits(N) BFMulAddH(bits(N) addend, bits(N DIV 2) op1, bits(N DIV 2) op2, FPCRType fpcr_in)">BFMulAddH</a>(element3, element1, element2, FPCR[]);
|
|
|
|
<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>
|