592 lines
33 KiB
XML
592 lines
33 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="VQRDMLAH" title="VQRDMLAH -- AArch32" type="instruction">
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<docvars>
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<docvar key="instr-class" value="fpsimd" />
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<docvar key="mnemonic" value="VQRDMLAH" />
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</docvars>
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<heading>VQRDMLAH</heading>
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<desc>
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<brief>
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<para>Vector Saturating Rounding Doubling Multiply Accumulate Returning High Half</para>
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</brief>
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<authored>
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<para>Vector Saturating Rounding Doubling Multiply Accumulate Returning High Half. This instruction multiplies the vector elements of the first source SIMD&FP register with either the corresponding vector elements of the second source SIMD&FP register or the value of a vector element of the second source SIMD&FP register, without saturating the multiply results, doubles the results, and accumulates the most significant half of the final results with the vector elements of the destination SIMD&FP register. The results are rounded.</para>
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<para>If any of the results overflow, they are saturated. The cumulative saturation bit, <xref linkend="AArch32.fpscr">FPSCR</xref>.QC, is set if saturation occurs. For details see <xref linkend="BEIHABGJ">Pseudocode details of saturation</xref>.</para>
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<para>Depending on settings in the <xref linkend="AArch32.cpacr">CPACR</xref>, <xref linkend="AArch32.nsacr">NSACR</xref>, and <xref linkend="AArch32.hcptr">HCPTR</xref> registers, and the Security state and PE mode in which the instruction is executed, an attempt to execute the instruction might be <arm-defined-word>undefined</arm-defined-word>, or trapped to Hyp mode. For more information see <xref linkend="CIHIDDFF">Enabling Advanced SIMD and floating-point support</xref>.</para>
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</authored>
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<encodingnotes>
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<para>Related encodings: See <xref linkend="T32.encoding_index.simddp">Advanced SIMD data-processing</xref> for the T32 instruction set, or <xref linkend="A32.encoding_index.advsimddp">Advanced SIMD data-processing</xref> for the A32 instruction set.</para>
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</encodingnotes>
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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="4">
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<txt>It has encodings from the following instruction sets:</txt>
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<txt> A32 (</txt>
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<a href="#iclass_a1">A1</a>
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<txt> and </txt>
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<a href="#iclass_a2">A2</a>
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<txt>)</txt>
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<txt> and </txt>
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<txt> T32 (</txt>
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<a href="#iclass_t1">T1</a>
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<txt> and </txt>
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<a href="#iclass_t2">T2</a>
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<txt>)</txt>
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<txt>.</txt>
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</classesintro>
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<iclass name="A1" oneof="4" id="iclass_a1" no_encodings="2" isa="A32">
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<docvars>
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<docvar key="armarmheading" value="A1" />
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<docvar key="instr-class" value="fpsimd" />
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<docvar key="isa" value="A32" />
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<docvar key="mnemonic" value="VQRDMLAH" />
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</docvars>
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<iclassintro count="2"></iclassintro>
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<arch_variants>
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<arch_variant name="ARMv8.1" feature="FEAT_RDM" />
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</arch_variants>
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<regdiagram form="32" psname="aarch32/instrs/VQRDMLAH/A1_A.txt">
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<box hibit="31" width="7" settings="7">
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<c>1</c>
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<c>1</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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</box>
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<box hibit="24" name="U" settings="1">
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<c>1</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="D" usename="1">
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<c></c>
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</box>
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<box hibit="21" 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="19" width="4" name="Vn" usename="1">
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<c colspan="4"></c>
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</box>
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<box hibit="15" width="4" name="Vd" usename="1">
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<c colspan="4"></c>
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</box>
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<box hibit="11" width="4" name="opc" settings="4">
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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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<c>1</c>
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</box>
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<box hibit="7" name="N" usename="1">
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<c></c>
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</box>
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<box hibit="6" name="Q" usename="1">
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<c></c>
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</box>
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<box hibit="5" name="M" usename="1">
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<c></c>
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</box>
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<box hibit="4" name="o1" settings="1">
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<c>1</c>
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</box>
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<box hibit="3" width="4" name="Vm" usename="1">
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<c colspan="4"></c>
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</box>
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</regdiagram>
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<encoding name="VQRDMLAH_A1_D" oneofinclass="2" oneof="8" label="64-bit SIMD vector" bitdiffs="Q == 0">
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<docvars>
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<docvar key="armarmheading" value="A1" />
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<docvar key="instr-class" value="fpsimd" />
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<docvar key="isa" value="A32" />
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<docvar key="mnemonic" value="VQRDMLAH" />
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<docvar key="simdvectorsize" value="double" />
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</docvars>
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<box hibit="6" width="1" name="Q">
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<c>0</c>
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</box>
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<asmtemplate><text>VQRDMLAH</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><q></a><text>}</text><text>.</text><a link="sa_dt" hover="Data type for elements of operands (field "size")"><dt></a><text> </text><a link="sa_dd" hover="64-bit SIMD&FP register holding accumulate vector (field "D:Vd")"><Dd></a><text>, </text><a link="sa_dn" hover="First 64-bit SIMD&FP source register (field "N:Vn")"><Dn></a><text>, </text><a link="sa_dm" hover="Second 64-bit SIMD&FP source register (field "M:Vm")"><Dm></a></asmtemplate>
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</encoding>
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<encoding name="VQRDMLAH_A1_Q" oneofinclass="2" oneof="8" label="128-bit SIMD vector" bitdiffs="Q == 1">
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<docvars>
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<docvar key="armarmheading" value="A1" />
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<docvar key="instr-class" value="fpsimd" />
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<docvar key="isa" value="A32" />
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<docvar key="mnemonic" value="VQRDMLAH" />
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<docvar key="simdvectorsize" value="quad" />
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</docvars>
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<box hibit="6" width="1" name="Q">
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<c>1</c>
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</box>
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<asmtemplate><text>VQRDMLAH</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><q></a><text>}</text><text>.</text><a link="sa_dt" hover="Data type for elements of operands (field "size")"><dt></a><text> </text><a link="sa_qd" hover="128-bit SIMD&FP register holding accumulate vector (field "D:Vd")"><Qd></a><text>, </text><a link="sa_qn" hover="First 128-bit SIMD&FP source register (field "N:Vn")"><Qn></a><text>, </text><a link="sa_qm" hover="Second 128-bit SIMD&FP source register (field "M:Vm")"><Qm></a></asmtemplate>
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</encoding>
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<ps_section howmany="1">
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<ps name="aarch32/instrs/VQRDMLAH/A1_A.txt" mylink="aarch32.instrs.VQRDMLAH.A1_A.txt" enclabels="" sections="1" secttype="noheading">
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<pstext mayhavelinks="1" section="Decode" rep_section="decode">if !<a link="impl-shared.HaveQRDMLAHExt.0" file="shared_pseudocode.xml" hover="function: boolean HaveQRDMLAHExt()">HaveQRDMLAHExt</a>() then UNDEFINED;
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if Q == '1' && (Vd<0> == '1' || Vn<0> == '1' || Vm<0> == '1') then UNDEFINED;
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if size == '00' || size == '11' then UNDEFINED;
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add = TRUE; scalar_form = FALSE; esize = 8 << <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(size); elements = 64 DIV esize;
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d = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(D:Vd); n = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(N:Vn); m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(M:Vm); regs = if Q == '0' then 1 else 2;</pstext>
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</ps>
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</ps_section>
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</iclass>
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<iclass name="A2" oneof="4" id="iclass_a2" no_encodings="2" isa="A32">
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<docvars>
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<docvar key="armarmheading" value="A2" />
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<docvar key="instr-class" value="fpsimd" />
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<docvar key="isa" value="A32" />
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<docvar key="mnemonic" value="VQRDMLAH" />
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</docvars>
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<iclassintro count="2"></iclassintro>
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<arch_variants>
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<arch_variant name="ARMv8.1" feature="FEAT_RDM" />
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</arch_variants>
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<regdiagram form="32" psname="aarch32/instrs/VQRDMLAH/A2_A.txt" tworows="1">
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<box hibit="31" width="7" settings="7">
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<c>1</c>
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<c>1</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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</box>
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<box hibit="24" name="Q" usename="1">
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<c></c>
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</box>
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<box hibit="23" settings="1">
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<c>1</c>
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</box>
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<box hibit="22" name="D" usename="1">
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<c></c>
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</box>
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<box hibit="21" width="2" name="size" usename="1" settings="2" constraint="!= 11">
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<c colspan="2">!= 11</c>
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</box>
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<box hibit="19" width="4" name="Vn" usename="1">
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<c colspan="4"></c>
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</box>
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<box hibit="15" width="4" name="Vd" usename="1">
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<c colspan="4"></c>
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</box>
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<box hibit="11" width="4" name="opc" settings="4">
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<c>1</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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</box>
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<box hibit="7" name="N" usename="1">
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<c></c>
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</box>
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<box hibit="6" settings="1">
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<c>1</c>
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</box>
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<box hibit="5" name="M" usename="1">
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<c></c>
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</box>
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<box hibit="4" settings="1">
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<c>0</c>
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</box>
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<box hibit="3" width="4" name="Vm" usename="1">
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<c colspan="4"></c>
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</box>
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</regdiagram>
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<encoding name="VQRDMLAH_A2_D" oneofinclass="2" oneof="8" label="64-bit SIMD vector" bitdiffs="Q == 0">
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<docvars>
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<docvar key="armarmheading" value="A2" />
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<docvar key="instr-class" value="fpsimd" />
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<docvar key="isa" value="A32" />
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<docvar key="mnemonic" value="VQRDMLAH" />
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<docvar key="simdvectorsize" value="double" />
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</docvars>
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<box hibit="24" width="1" name="Q">
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<c>0</c>
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</box>
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<asmtemplate><text>VQRDMLAH</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><q></a><text>}</text><text>.</text><a link="sa_dt" hover="Data type for elements of operands (field "size")"><dt></a><text> </text><a link="sa_dd" hover="64-bit SIMD&FP register holding accumulate vector (field "D:Vd")"><Dd></a><text>, </text><a link="sa_dn" hover="First 64-bit SIMD&FP source register (field "N:Vn")"><Dn></a><text>, </text><a link="sa_dm_x" hover="Second 64-bit SIMD&FP source register holding scalar (field "Vm<2:0>")"><Dm[x]></a></asmtemplate>
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</encoding>
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<encoding name="VQRDMLAH_A2_Q" oneofinclass="2" oneof="8" label="128-bit SIMD vector" bitdiffs="Q == 1">
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<docvars>
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<docvar key="armarmheading" value="A2" />
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<docvar key="instr-class" value="fpsimd" />
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<docvar key="isa" value="A32" />
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<docvar key="mnemonic" value="VQRDMLAH" />
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<docvar key="simdvectorsize" value="quad" />
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</docvars>
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<box hibit="24" width="1" name="Q">
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<c>1</c>
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</box>
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<asmtemplate><text>VQRDMLAH</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><q></a><text>}</text><text>.</text><a link="sa_dt" hover="Data type for elements of operands (field "size")"><dt></a><text> </text><a link="sa_qd" hover="128-bit SIMD&FP register holding accumulate vector (field "D:Vd")"><Qd></a><text>, </text><a link="sa_qn" hover="First 128-bit SIMD&FP source register (field "N:Vn")"><Qn></a><text>, </text><a link="sa_dm_x" hover="Second 64-bit SIMD&FP source register holding scalar (field "Vm<2:0>")"><Dm[x]></a></asmtemplate>
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</encoding>
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<ps_section howmany="1">
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<ps name="aarch32/instrs/VQRDMLAH/A2_A.txt" mylink="aarch32.instrs.VQRDMLAH.A2_A.txt" enclabels="" sections="1" secttype="noheading">
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<pstext mayhavelinks="1" section="Decode" rep_section="decode">if !<a link="impl-shared.HaveQRDMLAHExt.0" file="shared_pseudocode.xml" hover="function: boolean HaveQRDMLAHExt()">HaveQRDMLAHExt</a>() then UNDEFINED;
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if size == '11' then SEE "Related encodings";
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if size == '00' then UNDEFINED;
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if Q == '1' && (Vd<0> == '1' || Vn<0> == '1') then UNDEFINED;
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add = TRUE; scalar_form = TRUE;
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d = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(D:Vd); n = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(N:Vn);
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regs = if Q == '0' then 1 else 2;
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integer esize;
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integer elements;
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integer m;
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integer index;
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if size == '01' then esize = 16; elements = 4; m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Vm<2:0>); index = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(M:Vm<3>);
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if size == '10' then esize = 32; elements = 2; m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Vm); index = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(M);</pstext>
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</ps>
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</ps_section>
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</iclass>
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<iclass name="T1" oneof="4" id="iclass_t1" no_encodings="2" isa="T32">
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<docvars>
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<docvar key="armarmheading" value="T1" />
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<docvar key="instr-class" value="fpsimd" />
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<docvar key="isa" value="T32" />
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<docvar key="mnemonic" value="VQRDMLAH" />
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</docvars>
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<iclassintro count="2"></iclassintro>
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<arch_variants>
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<arch_variant name="ARMv8.1" feature="FEAT_RDM" />
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</arch_variants>
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<regdiagram form="16x2" psname="aarch32/instrs/VQRDMLAH/T1_A.txt">
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<box hibit="31" width="3" settings="3">
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<c>1</c>
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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="28" name="U" settings="1">
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<c>1</c>
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</box>
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<box hibit="27" width="5" settings="5">
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<c>1</c>
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<c>1</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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</box>
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<box hibit="22" name="D" usename="1">
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<c></c>
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</box>
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<box hibit="21" 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="19" width="4" name="Vn" usename="1">
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<c colspan="4"></c>
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</box>
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<box hibit="15" width="4" name="Vd" usename="1">
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<c colspan="4"></c>
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</box>
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<box hibit="11" width="4" name="opc" settings="4">
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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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<c>1</c>
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</box>
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<box hibit="7" name="N" usename="1">
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<c></c>
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</box>
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<box hibit="6" name="Q" usename="1">
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<c></c>
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</box>
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<box hibit="5" name="M" usename="1">
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<c></c>
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</box>
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<box hibit="4" name="o1" settings="1">
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<c>1</c>
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</box>
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<box hibit="3" width="4" name="Vm" usename="1">
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<c colspan="4"></c>
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</box>
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</regdiagram>
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<encoding name="VQRDMLAH_T1_D" oneofinclass="2" oneof="8" label="64-bit SIMD vector" bitdiffs="Q == 0">
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<docvars>
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<docvar key="armarmheading" value="T1" />
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<docvar key="instr-class" value="fpsimd" />
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<docvar key="isa" value="T32" />
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<docvar key="mnemonic" value="VQRDMLAH" />
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<docvar key="simdvectorsize" value="double" />
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</docvars>
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<box hibit="6" width="1" name="Q">
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<c>0</c>
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</box>
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<asmtemplate><text>VQRDMLAH</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><q></a><text>}</text><text>.</text><a link="sa_dt" hover="Data type for elements of operands (field "size")"><dt></a><text> </text><a link="sa_dd" hover="64-bit SIMD&FP register holding accumulate vector (field "D:Vd")"><Dd></a><text>, </text><a link="sa_dn" hover="First 64-bit SIMD&FP source register (field "N:Vn")"><Dn></a><text>, </text><a link="sa_dm" hover="Second 64-bit SIMD&FP source register (field "M:Vm")"><Dm></a></asmtemplate>
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</encoding>
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<encoding name="VQRDMLAH_T1_Q" oneofinclass="2" oneof="8" label="128-bit SIMD vector" bitdiffs="Q == 1">
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<docvars>
|
|
<docvar key="armarmheading" value="T1" />
|
|
<docvar key="instr-class" value="fpsimd" />
|
|
<docvar key="isa" value="T32" />
|
|
<docvar key="mnemonic" value="VQRDMLAH" />
|
|
<docvar key="simdvectorsize" value="quad" />
|
|
</docvars>
|
|
<box hibit="6" width="1" name="Q">
|
|
<c>1</c>
|
|
</box>
|
|
<asmtemplate><text>VQRDMLAH</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><q></a><text>}</text><text>.</text><a link="sa_dt" hover="Data type for elements of operands (field "size")"><dt></a><text> </text><a link="sa_qd" hover="128-bit SIMD&FP register holding accumulate vector (field "D:Vd")"><Qd></a><text>, </text><a link="sa_qn" hover="First 128-bit SIMD&FP source register (field "N:Vn")"><Qn></a><text>, </text><a link="sa_qm" hover="Second 128-bit SIMD&FP source register (field "M:Vm")"><Qm></a></asmtemplate>
|
|
</encoding>
|
|
<ps_section howmany="1">
|
|
<ps name="aarch32/instrs/VQRDMLAH/T1_A.txt" mylink="aarch32.instrs.VQRDMLAH.T1_A.txt" enclabels="" sections="1" secttype="noheading">
|
|
<pstext mayhavelinks="1" section="Decode" rep_section="decode">if !<a link="impl-shared.HaveQRDMLAHExt.0" file="shared_pseudocode.xml" hover="function: boolean HaveQRDMLAHExt()">HaveQRDMLAHExt</a>() then UNDEFINED;
|
|
if <a link="impl-aarch32.InITBlock.0" file="shared_pseudocode.xml" hover="function: boolean InITBlock()">InITBlock</a>() then UNPREDICTABLE;
|
|
if Q == '1' && (Vd<0> == '1' || Vn<0> == '1' || Vm<0> == '1') then UNDEFINED;
|
|
if size == '00' || size == '11' then UNDEFINED;
|
|
add = TRUE; scalar_form = FALSE; esize = 8 << <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(size); elements = 64 DIV esize;
|
|
d = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(D:Vd); n = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(N:Vn); m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(M:Vm); regs = if Q == '0' then 1 else 2;</pstext>
|
|
</ps>
|
|
</ps_section>
|
|
<constrained_unpredictables encoding="T1" ps_block="Decode">
|
|
<cu_case>
|
|
<cu_cause>
|
|
<pstext mayhavelinks="1">InITBlock()</pstext>
|
|
</cu_cause>
|
|
<cu_type constraint="Constraint_UNDEF" />
|
|
<cu_type>
|
|
<cu_type_text>The instruction executes as if it passes the Condition code check.</cu_type_text>
|
|
</cu_type>
|
|
<cu_type>
|
|
<cu_type_text>The instruction executes as NOP. This means it behaves as if it fails the Condition code check.</cu_type_text>
|
|
</cu_type>
|
|
<arch_variants>
|
|
<arch_variant name="ARMv8.2-A" />
|
|
</arch_variants>
|
|
</cu_case>
|
|
</constrained_unpredictables>
|
|
</iclass>
|
|
<iclass name="T2" oneof="4" id="iclass_t2" no_encodings="2" isa="T32">
|
|
<docvars>
|
|
<docvar key="armarmheading" value="T2" />
|
|
<docvar key="instr-class" value="fpsimd" />
|
|
<docvar key="isa" value="T32" />
|
|
<docvar key="mnemonic" value="VQRDMLAH" />
|
|
</docvars>
|
|
<iclassintro count="2"></iclassintro>
|
|
<arch_variants>
|
|
<arch_variant name="ARMv8.1" feature="FEAT_RDM" />
|
|
</arch_variants>
|
|
<regdiagram form="16x2" psname="aarch32/instrs/VQRDMLAH/T2_A.txt" tworows="1">
|
|
<box hibit="31" width="3" settings="3">
|
|
<c>1</c>
|
|
<c>1</c>
|
|
<c>1</c>
|
|
</box>
|
|
<box hibit="28" name="Q" usename="1">
|
|
<c></c>
|
|
</box>
|
|
<box hibit="27" width="5" settings="5">
|
|
<c>1</c>
|
|
<c>1</c>
|
|
<c>1</c>
|
|
<c>1</c>
|
|
<c>1</c>
|
|
</box>
|
|
<box hibit="22" name="D" usename="1">
|
|
<c></c>
|
|
</box>
|
|
<box hibit="21" width="2" name="size" usename="1" settings="2" constraint="!= 11">
|
|
<c colspan="2">!= 11</c>
|
|
</box>
|
|
<box hibit="19" width="4" name="Vn" usename="1">
|
|
<c colspan="4"></c>
|
|
</box>
|
|
<box hibit="15" width="4" name="Vd" usename="1">
|
|
<c colspan="4"></c>
|
|
</box>
|
|
<box hibit="11" width="4" name="opc" settings="4">
|
|
<c>1</c>
|
|
<c>1</c>
|
|
<c>1</c>
|
|
<c>0</c>
|
|
</box>
|
|
<box hibit="7" name="N" usename="1">
|
|
<c></c>
|
|
</box>
|
|
<box hibit="6" settings="1">
|
|
<c>1</c>
|
|
</box>
|
|
<box hibit="5" name="M" usename="1">
|
|
<c></c>
|
|
</box>
|
|
<box hibit="4" settings="1">
|
|
<c>0</c>
|
|
</box>
|
|
<box hibit="3" width="4" name="Vm" usename="1">
|
|
<c colspan="4"></c>
|
|
</box>
|
|
</regdiagram>
|
|
<encoding name="VQRDMLAH_T2_D" oneofinclass="2" oneof="8" label="64-bit SIMD vector" bitdiffs="Q == 0">
|
|
<docvars>
|
|
<docvar key="armarmheading" value="T2" />
|
|
<docvar key="instr-class" value="fpsimd" />
|
|
<docvar key="isa" value="T32" />
|
|
<docvar key="mnemonic" value="VQRDMLAH" />
|
|
<docvar key="simdvectorsize" value="double" />
|
|
</docvars>
|
|
<box hibit="28" width="1" name="Q">
|
|
<c>0</c>
|
|
</box>
|
|
<asmtemplate><text>VQRDMLAH</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><q></a><text>}</text><text>.</text><a link="sa_dt" hover="Data type for elements of operands (field "size")"><dt></a><text> </text><a link="sa_dd" hover="64-bit SIMD&FP register holding accumulate vector (field "D:Vd")"><Dd></a><text>, </text><a link="sa_dn" hover="First 64-bit SIMD&FP source register (field "N:Vn")"><Dn></a><text>, </text><a link="sa_dm_x" hover="Second 64-bit SIMD&FP source register holding scalar (field "Vm<2:0>")"><Dm[x]></a></asmtemplate>
|
|
</encoding>
|
|
<encoding name="VQRDMLAH_T2_Q" oneofinclass="2" oneof="8" label="128-bit SIMD vector" bitdiffs="Q == 1">
|
|
<docvars>
|
|
<docvar key="armarmheading" value="T2" />
|
|
<docvar key="instr-class" value="fpsimd" />
|
|
<docvar key="isa" value="T32" />
|
|
<docvar key="mnemonic" value="VQRDMLAH" />
|
|
<docvar key="simdvectorsize" value="quad" />
|
|
</docvars>
|
|
<box hibit="28" width="1" name="Q">
|
|
<c>1</c>
|
|
</box>
|
|
<asmtemplate><text>VQRDMLAH</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><q></a><text>}</text><text>.</text><a link="sa_dt" hover="Data type for elements of operands (field "size")"><dt></a><text> </text><a link="sa_qd" hover="128-bit SIMD&FP register holding accumulate vector (field "D:Vd")"><Qd></a><text>, </text><a link="sa_qn" hover="First 128-bit SIMD&FP source register (field "N:Vn")"><Qn></a><text>, </text><a link="sa_dm_x" hover="Second 64-bit SIMD&FP source register holding scalar (field "Vm<2:0>")"><Dm[x]></a></asmtemplate>
|
|
</encoding>
|
|
<ps_section howmany="1">
|
|
<ps name="aarch32/instrs/VQRDMLAH/T2_A.txt" mylink="aarch32.instrs.VQRDMLAH.T2_A.txt" enclabels="" sections="1" secttype="noheading">
|
|
<pstext mayhavelinks="1" section="Decode" rep_section="decode">if !<a link="impl-shared.HaveQRDMLAHExt.0" file="shared_pseudocode.xml" hover="function: boolean HaveQRDMLAHExt()">HaveQRDMLAHExt</a>() then UNDEFINED;
|
|
if <a link="impl-aarch32.InITBlock.0" file="shared_pseudocode.xml" hover="function: boolean InITBlock()">InITBlock</a>() then UNPREDICTABLE;
|
|
if size == '11' then SEE "Related encodings";
|
|
if size == '00' then UNDEFINED;
|
|
if Q == '1' && (Vd<0> == '1' || Vn<0> == '1') then UNDEFINED;
|
|
add = TRUE; scalar_form = TRUE;
|
|
d = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(D:Vd); n = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(N:Vn);
|
|
regs = if Q == '0' then 1 else 2;
|
|
integer esize;
|
|
integer elements;
|
|
integer m;
|
|
integer index;
|
|
if size == '01' then esize = 16; elements = 4; m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Vm<2:0>); index = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(M:Vm<3>);
|
|
if size == '10' then esize = 32; elements = 2; m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Vm); index = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(M);</pstext>
|
|
</ps>
|
|
</ps_section>
|
|
<constrained_unpredictables encoding="T2" ps_block="Decode">
|
|
<cu_case>
|
|
<cu_cause>
|
|
<pstext mayhavelinks="1">InITBlock()</pstext>
|
|
</cu_cause>
|
|
<cu_type constraint="Constraint_UNDEF" />
|
|
<cu_type>
|
|
<cu_type_text>The instruction executes as if it passes the Condition code check.</cu_type_text>
|
|
</cu_type>
|
|
<cu_type>
|
|
<cu_type_text>The instruction executes as NOP. This means it behaves as if it fails the Condition code check.</cu_type_text>
|
|
</cu_type>
|
|
<arch_variants>
|
|
<arch_variant name="ARMv8.2-A" />
|
|
</arch_variants>
|
|
</cu_case>
|
|
</constrained_unpredictables>
|
|
</iclass>
|
|
</classes>
|
|
<explanations scope="all">
|
|
<explanation enclist="VQRDMLAH_A1_Q, VQRDMLAH_A2_Q, VQRDMLAH_T1_Q, VQRDMLAH_T2_Q" symboldefcount="1">
|
|
<symbol link="sa_q"><q></symbol>
|
|
<account encodedin="">
|
|
<intro>
|
|
<para>See <xref linkend="Babbefhf">Standard assembler syntax fields</xref>.</para>
|
|
</intro>
|
|
</account>
|
|
</explanation>
|
|
<explanation enclist="VQRDMLAH_A1_Q, VQRDMLAH_A2_Q, VQRDMLAH_T1_Q, VQRDMLAH_T2_Q" symboldefcount="1">
|
|
<symbol link="sa_dt"><dt></symbol>
|
|
<definition encodedin="size">
|
|
<intro>Is the data type for the elements of the operands, </intro>
|
|
<table class="valuetable">
|
|
<tgroup cols="2">
|
|
<thead>
|
|
<row>
|
|
<entry class="bitfield">size</entry>
|
|
<entry class="symbol"><dt></entry>
|
|
</row>
|
|
</thead>
|
|
<tbody>
|
|
<row>
|
|
<entry class="bitfield">01</entry>
|
|
<entry class="symbol">S16</entry>
|
|
</row>
|
|
<row>
|
|
<entry class="bitfield">10</entry>
|
|
<entry class="symbol">S32</entry>
|
|
</row>
|
|
</tbody>
|
|
</tgroup>
|
|
</table>
|
|
</definition>
|
|
</explanation>
|
|
<explanation enclist="VQRDMLAH_A1_Q, VQRDMLAH_A2_Q, VQRDMLAH_T1_Q, VQRDMLAH_T2_Q" symboldefcount="1">
|
|
<symbol link="sa_qd"><Qd></symbol>
|
|
<account encodedin="D:Vd">
|
|
<intro>
|
|
<para>Is the 128-bit name of the SIMD&FP register holding the accumulate vector, encoded in the "D:Vd" field as <Qd>*2.</para>
|
|
</intro>
|
|
</account>
|
|
</explanation>
|
|
<explanation enclist="VQRDMLAH_A1_Q, VQRDMLAH_A2_Q, VQRDMLAH_T1_Q, VQRDMLAH_T2_Q" symboldefcount="1">
|
|
<symbol link="sa_qn"><Qn></symbol>
|
|
<account encodedin="N:Vn">
|
|
<intro>
|
|
<para>Is the 128-bit name of the first SIMD&FP source register, encoded in the "N:Vn" field as <Qn>*2.</para>
|
|
</intro>
|
|
</account>
|
|
</explanation>
|
|
<explanation enclist="VQRDMLAH_A1_Q, VQRDMLAH_T1_Q" symboldefcount="1">
|
|
<symbol link="sa_qm"><Qm></symbol>
|
|
<account encodedin="M:Vm">
|
|
<intro>
|
|
<para>Is the 128-bit name of the second SIMD&FP source register, encoded in the "M:Vm" field as <Qm>*2.</para>
|
|
</intro>
|
|
</account>
|
|
</explanation>
|
|
<explanation enclist="VQRDMLAH_A1_D, VQRDMLAH_A2_D, VQRDMLAH_T1_D, VQRDMLAH_T2_D" symboldefcount="1">
|
|
<symbol link="sa_dd"><Dd></symbol>
|
|
<account encodedin="D:Vd">
|
|
<intro>
|
|
<para>Is the 64-bit name of the SIMD&FP register holding the accumulate vector, encoded in the "D:Vd" field.</para>
|
|
</intro>
|
|
</account>
|
|
</explanation>
|
|
<explanation enclist="VQRDMLAH_A1_D, VQRDMLAH_A2_D, VQRDMLAH_T1_D, VQRDMLAH_T2_D" symboldefcount="1">
|
|
<symbol link="sa_dn"><Dn></symbol>
|
|
<account encodedin="N:Vn">
|
|
<intro>
|
|
<para>Is the 64-bit name of the first SIMD&FP source register, encoded in the "N:Vn" field.</para>
|
|
</intro>
|
|
</account>
|
|
</explanation>
|
|
<explanation enclist="VQRDMLAH_A2_Q, VQRDMLAH_T2_Q" symboldefcount="1">
|
|
<symbol link="sa_dm_x"><Dm[x]></symbol>
|
|
<account encodedin="">
|
|
<intro>
|
|
<para>Is the 64-bit name of the second SIMD&FP source register holding the scalar. If <syntax><dt></syntax> is <value>S16</value>, <syntax>Dm</syntax> is restricted to D0-D7. <syntax>Dm</syntax> is encoded in "Vm<2:0>", and <syntax>x</syntax> is encoded in "M:Vm<3>". If <syntax><dt></syntax> is <value>S32</value>, <syntax>Dm</syntax> is restricted to D0-D15. <syntax>Dm</syntax> is encoded in "Vm", and <syntax>x</syntax> is encoded in "M".</para>
|
|
</intro>
|
|
</account>
|
|
</explanation>
|
|
<explanation enclist="VQRDMLAH_A1_D, VQRDMLAH_T1_D" symboldefcount="1">
|
|
<symbol link="sa_dm"><Dm></symbol>
|
|
<account encodedin="M:Vm">
|
|
<intro>
|
|
<para>Is the 64-bit name of the second SIMD&FP source register, encoded in the "M:Vm" field.</para>
|
|
</intro>
|
|
</account>
|
|
</explanation>
|
|
</explanations>
|
|
<ps_section howmany="1">
|
|
<ps name="aarch32/instrs/VQRDMLAH/Op_A.txt" mylink="execute" enclabels="" sections="1" secttype="Operation">
|
|
<pstext mayhavelinks="1" section="Execute" rep_section="execute">EncodingSpecificOperations(); <a link="impl-aarch32.CheckAdvSIMDEnabled.0" file="shared_pseudocode.xml" hover="function: CheckAdvSIMDEnabled()">CheckAdvSIMDEnabled</a>();
|
|
round_const = 1 << (esize-1);
|
|
integer op2;
|
|
if scalar_form then op2 = <a link="impl-shared.SInt.1" file="shared_pseudocode.xml" hover="function: integer SInt(bits(N) x)">SInt</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>[<a link="impl-aarch32.D.read.1" file="shared_pseudocode.xml" hover="accessor: bits(64) D[integer n]">D</a>[m],index,esize]);
|
|
for r = 0 to regs-1
|
|
for e = 0 to elements-1
|
|
op1 = <a link="impl-shared.SInt.1" file="shared_pseudocode.xml" hover="function: integer SInt(bits(N) x)">SInt</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>[<a link="impl-aarch32.D.read.1" file="shared_pseudocode.xml" hover="accessor: bits(64) D[integer n]">D</a>[n+r],e,esize]);
|
|
op3 = <a link="impl-shared.SInt.1" file="shared_pseudocode.xml" hover="function: integer SInt(bits(N) x)">SInt</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>[<a link="impl-aarch32.D.read.1" file="shared_pseudocode.xml" hover="accessor: bits(64) D[integer n]">D</a>[d+r],e,esize]) << esize;
|
|
if !scalar_form then op2 = <a link="impl-shared.SInt.1" file="shared_pseudocode.xml" hover="function: integer SInt(bits(N) x)">SInt</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>[<a link="impl-aarch32.D.read.1" file="shared_pseudocode.xml" hover="accessor: bits(64) D[integer n]">D</a>[m+r],e,esize]);
|
|
(result, sat) = <a link="impl-shared.SignedSatQ.2" file="shared_pseudocode.xml" hover="function: (bits(N), boolean) SignedSatQ(integer i, integer N)">SignedSatQ</a>((op3 + 2*(op1*op2) + round_const) >> esize, esize);
|
|
<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>[<a link="impl-aarch32.D.write.1" file="shared_pseudocode.xml" hover="accessor: D[integer n] = bits(64) value">D</a>[d+r],e,esize] = result;
|
|
if sat then FPSCR.QC = '1';</pstext>
|
|
</ps>
|
|
</ps_section>
|
|
</instructionsection>
|