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<?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="VCVT_iv" title="VCVT (floating-point to integer, floating-point) -- AArch32" type="instruction">
<docvars>
<docvar key="instr-class" value="fpsimd" />
<docvar key="mnemonic" value="VCVT" />
</docvars>
<heading>VCVT (floating-point to integer, floating-point)</heading>
<desc>
<brief>
<para>Convert floating-point to integer with Round towards Zero</para>
</brief>
<authored>
<para>Convert floating-point to integer with Round towards Zero converts a value in a register from floating-point to a 32-bit integer, using the Round towards Zero rounding mode, and places the result in a second register.</para>
<para><xref linkend="A32T32-fpsimd.instructions.VCVT_xv">VCVT (between floating-point and fixed-point, floating-point)</xref> describes conversions between floating-point and 16-bit integers.</para>
<para>Depending on settings in the <xref linkend="AArch32.cpacr">CPACR</xref>, <xref linkend="AArch32.nsacr">NSACR</xref>, <xref linkend="AArch32.hcptr">HCPTR</xref>, and <xref linkend="AArch32.fpexc">FPEXC</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>
</authored>
<encodingnotes>
<para>Related encodings: See <xref linkend="T32.encoding_index.fpdp">Floating-point data-processing</xref> for the T32 instruction set, or <xref linkend="A32.encoding_index.fpdp">Floating-point data-processing</xref> for the A32 instruction set.</para>
</encodingnotes>
</desc>
<alias_list howmany="0"></alias_list>
<classes>
<classesintro count="2">
<txt>It has encodings from the following instruction sets:</txt>
<txt> A32 (</txt>
<a href="#iclass_a1">A1</a>
<txt>)</txt>
<txt> and </txt>
<txt> T32 (</txt>
<a href="#iclass_t1">T1</a>
<txt>)</txt>
<txt>.</txt>
</classesintro>
<iclass name="A1" oneof="2" id="iclass_a1" no_encodings="6" isa="A32">
<docvars>
<docvar key="armarmheading" value="A1" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="A32" />
<docvar key="mnemonic" value="VCVT" />
</docvars>
<iclassintro count="6"></iclassintro>
<regdiagram form="32" psname="aarch32/instrs/VCVT_iv/A1_A.txt" tworows="1">
<box hibit="31" width="4" name="cond" usename="1" settings="4" constraint="!= 1111">
<c colspan="4">!= 1111</c>
</box>
<box hibit="27" width="5" settings="5">
<c>1</c>
<c>1</c>
<c>1</c>
<c>0</c>
<c>1</c>
</box>
<box hibit="22" name="D" usename="1">
<c></c>
</box>
<box hibit="21" width="2" settings="2">
<c>1</c>
<c>1</c>
</box>
<box hibit="19" name="o1" settings="1">
<c>1</c>
</box>
<box hibit="18" width="3" name="opc2" usename="1" settings="2">
<c>1</c>
<c>0</c>
<c>x</c>
</box>
<box hibit="15" width="4" name="Vd" usename="1">
<c colspan="4"></c>
</box>
<box hibit="11" width="2" settings="2">
<c>1</c>
<c>0</c>
</box>
<box hibit="9" width="2" name="size" usename="1">
<c colspan="2"></c>
</box>
<box hibit="7" name="op" usename="1" settings="1">
<c>1</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="VCVT_uiv_A1_H" oneofinclass="6" oneof="12" label="Half-precision scalar" bitdiffs="opc2 == 100 &amp;&amp; size == 01">
<docvars>
<docvar key="armarmheading" value="A1" />
<docvar key="fpdatasize" value="halfprec" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="A32" />
<docvar key="mnemonic" value="VCVT" />
<docvar key="mnemonic-fpdatasize" value="VCVT-halfprec" />
</docvars>
<arch_variants>
<arch_variant name="ARMv8.2" feature="FEAT_FP16" />
</arch_variants>
<box hibit="18" width="" name="opc2">
<c></c>
<c></c>
<c>0</c>
</box>
<box hibit="9" width="2" name="size">
<c>0</c>
<c>1</c>
</box>
<asmtemplate><text>VCVT</text><text>{</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;c&gt;</a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;q&gt;</a><text>}</text><text>.U32.F16 </text><a link="sa_sd" hover="32-bit SIMD&amp;FP destination register (field &quot;Vd:D&quot;)">&lt;Sd&gt;</a><text>, </text><a link="sa_sm" hover="32-bit SIMD&amp;FP source register (field &quot;Vm:M&quot;)">&lt;Sm&gt;</a></asmtemplate>
</encoding>
<encoding name="VCVT_siv_A1_H" oneofinclass="6" oneof="12" label="Half-precision scalar" bitdiffs="opc2 == 101 &amp;&amp; size == 01">
<docvars>
<docvar key="armarmheading" value="A1" />
<docvar key="fpdatasize" value="halfprec" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="A32" />
<docvar key="mnemonic" value="VCVT" />
<docvar key="mnemonic-fpdatasize" value="VCVT-halfprec" />
</docvars>
<arch_variants>
<arch_variant name="ARMv8.2" feature="FEAT_FP16" />
</arch_variants>
<box hibit="18" width="" name="opc2">
<c></c>
<c></c>
<c>1</c>
</box>
<box hibit="9" width="2" name="size">
<c>0</c>
<c>1</c>
</box>
<asmtemplate><text>VCVT</text><text>{</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;c&gt;</a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;q&gt;</a><text>}</text><text>.S32.F16 </text><a link="sa_sd" hover="32-bit SIMD&amp;FP destination register (field &quot;Vd:D&quot;)">&lt;Sd&gt;</a><text>, </text><a link="sa_sm" hover="32-bit SIMD&amp;FP source register (field &quot;Vm:M&quot;)">&lt;Sm&gt;</a></asmtemplate>
</encoding>
<encoding name="VCVT_uiv_A1_S" oneofinclass="6" oneof="12" label="Single-precision scalar" bitdiffs="opc2 == 100 &amp;&amp; size == 10">
<docvars>
<docvar key="armarmheading" value="A1" />
<docvar key="fpdatasize" value="singleprec" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="A32" />
<docvar key="mnemonic" value="VCVT" />
<docvar key="mnemonic-fpdatasize" value="VCVT-singleprec" />
</docvars>
<box hibit="18" width="" name="opc2">
<c></c>
<c></c>
<c>0</c>
</box>
<box hibit="9" width="2" name="size">
<c>1</c>
<c>0</c>
</box>
<asmtemplate><text>VCVT</text><text>{</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;c&gt;</a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;q&gt;</a><text>}</text><text>.U32.F32 </text><a link="sa_sd" hover="32-bit SIMD&amp;FP destination register (field &quot;Vd:D&quot;)">&lt;Sd&gt;</a><text>, </text><a link="sa_sm" hover="32-bit SIMD&amp;FP source register (field &quot;Vm:M&quot;)">&lt;Sm&gt;</a></asmtemplate>
</encoding>
<encoding name="VCVT_siv_A1_S" oneofinclass="6" oneof="12" label="Single-precision scalar" bitdiffs="opc2 == 101 &amp;&amp; size == 10">
<docvars>
<docvar key="armarmheading" value="A1" />
<docvar key="fpdatasize" value="singleprec" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="A32" />
<docvar key="mnemonic" value="VCVT" />
<docvar key="mnemonic-fpdatasize" value="VCVT-singleprec" />
</docvars>
<box hibit="18" width="" name="opc2">
<c></c>
<c></c>
<c>1</c>
</box>
<box hibit="9" width="2" name="size">
<c>1</c>
<c>0</c>
</box>
<asmtemplate><text>VCVT</text><text>{</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;c&gt;</a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;q&gt;</a><text>}</text><text>.S32.F32 </text><a link="sa_sd" hover="32-bit SIMD&amp;FP destination register (field &quot;Vd:D&quot;)">&lt;Sd&gt;</a><text>, </text><a link="sa_sm" hover="32-bit SIMD&amp;FP source register (field &quot;Vm:M&quot;)">&lt;Sm&gt;</a></asmtemplate>
</encoding>
<encoding name="VCVT_uiv_A1_D" oneofinclass="6" oneof="12" label="Double-precision scalar" bitdiffs="opc2 == 100 &amp;&amp; size == 11">
<docvars>
<docvar key="armarmheading" value="A1" />
<docvar key="fpdatasize" value="doubleprec" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="A32" />
<docvar key="mnemonic" value="VCVT" />
<docvar key="mnemonic-fpdatasize" value="VCVT-doubleprec" />
</docvars>
<box hibit="18" width="" name="opc2">
<c></c>
<c></c>
<c>0</c>
</box>
<box hibit="9" width="2" name="size">
<c>1</c>
<c>1</c>
</box>
<asmtemplate><text>VCVT</text><text>{</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;c&gt;</a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;q&gt;</a><text>}</text><text>.U32.F64 </text><a link="sa_sd" hover="32-bit SIMD&amp;FP destination register (field &quot;Vd:D&quot;)">&lt;Sd&gt;</a><text>, </text><a link="sa_dm" hover="64-bit SIMD&amp;FP source register (field &quot;M:Vm&quot;)">&lt;Dm&gt;</a></asmtemplate>
</encoding>
<encoding name="VCVT_siv_A1_D" oneofinclass="6" oneof="12" label="Double-precision scalar" bitdiffs="opc2 == 101 &amp;&amp; size == 11">
<docvars>
<docvar key="armarmheading" value="A1" />
<docvar key="fpdatasize" value="doubleprec" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="A32" />
<docvar key="mnemonic" value="VCVT" />
<docvar key="mnemonic-fpdatasize" value="VCVT-doubleprec" />
</docvars>
<box hibit="18" width="" name="opc2">
<c></c>
<c></c>
<c>1</c>
</box>
<box hibit="9" width="2" name="size">
<c>1</c>
<c>1</c>
</box>
<asmtemplate><text>VCVT</text><text>{</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;c&gt;</a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;q&gt;</a><text>}</text><text>.S32.F64 </text><a link="sa_sd" hover="32-bit SIMD&amp;FP destination register (field &quot;Vd:D&quot;)">&lt;Sd&gt;</a><text>, </text><a link="sa_dm" hover="64-bit SIMD&amp;FP source register (field &quot;M:Vm&quot;)">&lt;Dm&gt;</a></asmtemplate>
</encoding>
<ps_section howmany="1">
<ps name="aarch32/instrs/VCVT_iv/A1_A.txt" mylink="aarch32.instrs.VCVT_iv.A1_A.txt" enclabels="" sections="1" secttype="noheading">
<pstext mayhavelinks="1" section="Decode" rep_section="decode">if opc2 != '000' &amp;&amp; !(opc2 IN {'10x'}) then SEE "Related encodings";
if size == '00' || (size == '01' &amp;&amp; !<a link="impl-shared.HaveFP16Ext.0" file="shared_pseudocode.xml" hover="function: boolean HaveFP16Ext()">HaveFP16Ext</a>()) then UNDEFINED;
if size == '01' &amp;&amp; cond != '1110' then UNPREDICTABLE;
integer d;
integer esize;
integer m;
boolean unsigned;
<a link="FPRounding" file="shared_pseudocode.xml" hover="enumeration FPRounding {FPRounding_TIEEVEN, FPRounding_POSINF, FPRounding_NEGINF, FPRounding_ZERO, FPRounding_TIEAWAY, FPRounding_ODD}">FPRounding</a> rounding;
to_integer = (opc2&lt;2&gt; == '1');
if to_integer then
unsigned = (opc2&lt;0&gt; == '0');
rounding = if op == '1' then <a link="FPRounding_ZERO" file="shared_pseudocode.xml" hover="enumeration FPRounding {FPRounding_TIEEVEN, FPRounding_POSINF, FPRounding_NEGINF, FPRounding_ZERO, FPRounding_TIEAWAY, FPRounding_ODD}">FPRounding_ZERO</a> else <a link="impl-shared.FPRoundingMode.1" file="shared_pseudocode.xml" hover="function: FPRounding FPRoundingMode(FPCRType fpcr)">FPRoundingMode</a>(FPSCR[]);
d = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Vd:D);
case size of
when '01' esize = 16; m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Vm:M);
when '10' esize = 32; m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Vm:M);
when '11' esize = 64; m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(M:Vm);
else
unsigned = (op == '0');
rounding = <a link="impl-shared.FPRoundingMode.1" file="shared_pseudocode.xml" hover="function: FPRounding FPRoundingMode(FPCRType fpcr)">FPRoundingMode</a>(FPSCR[]);
m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Vm:M);
case size of
when '01' esize = 16; d = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Vd:D);
when '10' esize = 32; d = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Vd:D);
when '11' esize = 64; d = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(D:Vd);</pstext>
</ps>
</ps_section>
<constrained_unpredictables encoding="A1" ps_block="Decode">
<cu_case>
<cu_cause>
<pstext mayhavelinks="1">size == '01' &amp;&amp; cond != '1110'</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="T1" oneof="2" id="iclass_t1" no_encodings="6" isa="T32">
<docvars>
<docvar key="armarmheading" value="T1" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="T32" />
<docvar key="mnemonic" value="VCVT" />
</docvars>
<iclassintro count="6"></iclassintro>
<regdiagram form="16x2" psname="aarch32/instrs/VCVT_iv/T1_A.txt" tworows="1">
<box hibit="31" width="9" settings="9">
<c>1</c>
<c>1</c>
<c>1</c>
<c>0</c>
<c>1</c>
<c>1</c>
<c>1</c>
<c>0</c>
<c>1</c>
</box>
<box hibit="22" name="D" usename="1">
<c></c>
</box>
<box hibit="21" width="2" settings="2">
<c>1</c>
<c>1</c>
</box>
<box hibit="19" name="o1" settings="1">
<c>1</c>
</box>
<box hibit="18" width="3" name="opc2" usename="1" settings="2">
<c>1</c>
<c>0</c>
<c>x</c>
</box>
<box hibit="15" width="4" name="Vd" usename="1">
<c colspan="4"></c>
</box>
<box hibit="11" width="2" settings="2">
<c>1</c>
<c>0</c>
</box>
<box hibit="9" width="2" name="size" usename="1">
<c colspan="2"></c>
</box>
<box hibit="7" name="op" usename="1" settings="1">
<c>1</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="VCVT_uiv_T1_H" oneofinclass="6" oneof="12" label="Half-precision scalar" bitdiffs="opc2 == 100 &amp;&amp; size == 01">
<docvars>
<docvar key="armarmheading" value="T1" />
<docvar key="fpdatasize" value="halfprec" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="T32" />
<docvar key="mnemonic" value="VCVT" />
<docvar key="mnemonic-fpdatasize" value="VCVT-halfprec" />
</docvars>
<arch_variants>
<arch_variant name="ARMv8.2" feature="FEAT_FP16" />
</arch_variants>
<box hibit="18" width="" name="opc2">
<c></c>
<c></c>
<c>0</c>
</box>
<box hibit="9" width="2" name="size">
<c>0</c>
<c>1</c>
</box>
<asmtemplate><text>VCVT</text><text>{</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;c&gt;</a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;q&gt;</a><text>}</text><text>.U32.F16 </text><a link="sa_sd" hover="32-bit SIMD&amp;FP destination register (field &quot;Vd:D&quot;)">&lt;Sd&gt;</a><text>, </text><a link="sa_sm" hover="32-bit SIMD&amp;FP source register (field &quot;Vm:M&quot;)">&lt;Sm&gt;</a></asmtemplate>
</encoding>
<encoding name="VCVT_siv_T1_H" oneofinclass="6" oneof="12" label="Half-precision scalar" bitdiffs="opc2 == 101 &amp;&amp; size == 01">
<docvars>
<docvar key="armarmheading" value="T1" />
<docvar key="fpdatasize" value="halfprec" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="T32" />
<docvar key="mnemonic" value="VCVT" />
<docvar key="mnemonic-fpdatasize" value="VCVT-halfprec" />
</docvars>
<arch_variants>
<arch_variant name="ARMv8.2" feature="FEAT_FP16" />
</arch_variants>
<box hibit="18" width="" name="opc2">
<c></c>
<c></c>
<c>1</c>
</box>
<box hibit="9" width="2" name="size">
<c>0</c>
<c>1</c>
</box>
<asmtemplate><text>VCVT</text><text>{</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;c&gt;</a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;q&gt;</a><text>}</text><text>.S32.F16 </text><a link="sa_sd" hover="32-bit SIMD&amp;FP destination register (field &quot;Vd:D&quot;)">&lt;Sd&gt;</a><text>, </text><a link="sa_sm" hover="32-bit SIMD&amp;FP source register (field &quot;Vm:M&quot;)">&lt;Sm&gt;</a></asmtemplate>
</encoding>
<encoding name="VCVT_uiv_T1_S" oneofinclass="6" oneof="12" label="Single-precision scalar" bitdiffs="opc2 == 100 &amp;&amp; size == 10">
<docvars>
<docvar key="armarmheading" value="T1" />
<docvar key="fpdatasize" value="singleprec" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="T32" />
<docvar key="mnemonic" value="VCVT" />
<docvar key="mnemonic-fpdatasize" value="VCVT-singleprec" />
</docvars>
<box hibit="18" width="" name="opc2">
<c></c>
<c></c>
<c>0</c>
</box>
<box hibit="9" width="2" name="size">
<c>1</c>
<c>0</c>
</box>
<asmtemplate><text>VCVT</text><text>{</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;c&gt;</a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;q&gt;</a><text>}</text><text>.U32.F32 </text><a link="sa_sd" hover="32-bit SIMD&amp;FP destination register (field &quot;Vd:D&quot;)">&lt;Sd&gt;</a><text>, </text><a link="sa_sm" hover="32-bit SIMD&amp;FP source register (field &quot;Vm:M&quot;)">&lt;Sm&gt;</a></asmtemplate>
</encoding>
<encoding name="VCVT_siv_T1_S" oneofinclass="6" oneof="12" label="Single-precision scalar" bitdiffs="opc2 == 101 &amp;&amp; size == 10">
<docvars>
<docvar key="armarmheading" value="T1" />
<docvar key="fpdatasize" value="singleprec" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="T32" />
<docvar key="mnemonic" value="VCVT" />
<docvar key="mnemonic-fpdatasize" value="VCVT-singleprec" />
</docvars>
<box hibit="18" width="" name="opc2">
<c></c>
<c></c>
<c>1</c>
</box>
<box hibit="9" width="2" name="size">
<c>1</c>
<c>0</c>
</box>
<asmtemplate><text>VCVT</text><text>{</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;c&gt;</a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;q&gt;</a><text>}</text><text>.S32.F32 </text><a link="sa_sd" hover="32-bit SIMD&amp;FP destination register (field &quot;Vd:D&quot;)">&lt;Sd&gt;</a><text>, </text><a link="sa_sm" hover="32-bit SIMD&amp;FP source register (field &quot;Vm:M&quot;)">&lt;Sm&gt;</a></asmtemplate>
</encoding>
<encoding name="VCVT_uiv_T1_D" oneofinclass="6" oneof="12" label="Double-precision scalar" bitdiffs="opc2 == 100 &amp;&amp; size == 11">
<docvars>
<docvar key="armarmheading" value="T1" />
<docvar key="fpdatasize" value="doubleprec" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="T32" />
<docvar key="mnemonic" value="VCVT" />
<docvar key="mnemonic-fpdatasize" value="VCVT-doubleprec" />
</docvars>
<box hibit="18" width="" name="opc2">
<c></c>
<c></c>
<c>0</c>
</box>
<box hibit="9" width="2" name="size">
<c>1</c>
<c>1</c>
</box>
<asmtemplate><text>VCVT</text><text>{</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;c&gt;</a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;q&gt;</a><text>}</text><text>.U32.F64 </text><a link="sa_sd" hover="32-bit SIMD&amp;FP destination register (field &quot;Vd:D&quot;)">&lt;Sd&gt;</a><text>, </text><a link="sa_dm" hover="64-bit SIMD&amp;FP source register (field &quot;M:Vm&quot;)">&lt;Dm&gt;</a></asmtemplate>
</encoding>
<encoding name="VCVT_siv_T1_D" oneofinclass="6" oneof="12" label="Double-precision scalar" bitdiffs="opc2 == 101 &amp;&amp; size == 11">
<docvars>
<docvar key="armarmheading" value="T1" />
<docvar key="fpdatasize" value="doubleprec" />
<docvar key="instr-class" value="fpsimd" />
<docvar key="isa" value="T32" />
<docvar key="mnemonic" value="VCVT" />
<docvar key="mnemonic-fpdatasize" value="VCVT-doubleprec" />
</docvars>
<box hibit="18" width="" name="opc2">
<c></c>
<c></c>
<c>1</c>
</box>
<box hibit="9" width="2" name="size">
<c>1</c>
<c>1</c>
</box>
<asmtemplate><text>VCVT</text><text>{</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;c&gt;</a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}">&lt;q&gt;</a><text>}</text><text>.S32.F64 </text><a link="sa_sd" hover="32-bit SIMD&amp;FP destination register (field &quot;Vd:D&quot;)">&lt;Sd&gt;</a><text>, </text><a link="sa_dm" hover="64-bit SIMD&amp;FP source register (field &quot;M:Vm&quot;)">&lt;Dm&gt;</a></asmtemplate>
</encoding>
<ps_section howmany="1">
<ps name="aarch32/instrs/VCVT_iv/T1_A.txt" mylink="aarch32.instrs.VCVT_iv.T1_A.txt" enclabels="" sections="1" secttype="noheading">
<pstext mayhavelinks="1" section="Decode" rep_section="decode">if opc2 != '000' &amp;&amp; !(opc2 IN {'10x'}) then SEE "Related encodings";
if size == '00' || (size == '01' &amp;&amp; !<a link="impl-shared.HaveFP16Ext.0" file="shared_pseudocode.xml" hover="function: boolean HaveFP16Ext()">HaveFP16Ext</a>()) then UNDEFINED;
if size == '01' &amp;&amp; <a link="impl-aarch32.InITBlock.0" file="shared_pseudocode.xml" hover="function: boolean InITBlock()">InITBlock</a>() then UNPREDICTABLE;
integer esize;
integer m;
integer d;
boolean unsigned;
<a link="FPRounding" file="shared_pseudocode.xml" hover="enumeration FPRounding {FPRounding_TIEEVEN, FPRounding_POSINF, FPRounding_NEGINF, FPRounding_ZERO, FPRounding_TIEAWAY, FPRounding_ODD}">FPRounding</a> rounding;
to_integer = (opc2&lt;2&gt; == '1');
if to_integer then
unsigned = (opc2&lt;0&gt; == '0');
rounding = if op == '1' then <a link="FPRounding_ZERO" file="shared_pseudocode.xml" hover="enumeration FPRounding {FPRounding_TIEEVEN, FPRounding_POSINF, FPRounding_NEGINF, FPRounding_ZERO, FPRounding_TIEAWAY, FPRounding_ODD}">FPRounding_ZERO</a> else <a link="impl-shared.FPRoundingMode.1" file="shared_pseudocode.xml" hover="function: FPRounding FPRoundingMode(FPCRType fpcr)">FPRoundingMode</a>(FPSCR[]);
d = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Vd:D);
case size of
when '01' esize = 16; m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Vm:M);
when '10' esize = 32; m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Vm:M);
when '11' esize = 64; m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(M:Vm);
else
unsigned = (op == '0');
rounding = <a link="impl-shared.FPRoundingMode.1" file="shared_pseudocode.xml" hover="function: FPRounding FPRoundingMode(FPCRType fpcr)">FPRoundingMode</a>(FPSCR[]);
m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Vm:M);
case size of
when '01' esize = 16; d = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Vd:D);
when '10' esize = 32; d = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Vd:D);
when '11' esize = 64; d = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(D:Vd);</pstext>
</ps>
</ps_section>
<constrained_unpredictables encoding="T1" ps_block="Decode">
<cu_case>
<cu_cause>
<pstext mayhavelinks="1">size == '01' &amp;&amp; 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="VCVT_uiv_A1_H, VCVT_uiv_T1_H" symboldefcount="1">
<symbol link="sa_c">&lt;c&gt;</symbol>
<account encodedin="">
<intro>
<para>See <xref linkend="Babbefhf">Standard assembler syntax fields</xref>.</para>
</intro>
</account>
</explanation>
<explanation enclist="VCVT_uiv_A1_H, VCVT_uiv_T1_H" symboldefcount="1">
<symbol link="sa_q">&lt;q&gt;</symbol>
<account encodedin="">
<intro>
<para>See <xref linkend="Babbefhf">Standard assembler syntax fields</xref>.</para>
</intro>
</account>
</explanation>
<explanation enclist="VCVT_uiv_A1_H, VCVT_uiv_T1_H" symboldefcount="1">
<symbol link="sa_sd">&lt;Sd&gt;</symbol>
<account encodedin="Vd:D">
<intro>
<para>Is the 32-bit name of the SIMD&amp;FP destination register, encoded in the "Vd:D" field.</para>
</intro>
</account>
</explanation>
<explanation enclist="VCVT_uiv_A1_H, VCVT_uiv_T1_H" symboldefcount="1">
<symbol link="sa_sm">&lt;Sm&gt;</symbol>
<account encodedin="Vm:M">
<intro>
<para>Is the 32-bit name of the SIMD&amp;FP source register, encoded in the "Vm:M" field.</para>
</intro>
</account>
</explanation>
<explanation enclist="VCVT_uiv_A1_D, VCVT_uiv_T1_D" symboldefcount="1">
<symbol link="sa_dm">&lt;Dm&gt;</symbol>
<account encodedin="M:Vm">
<intro>
<para>Is the 64-bit name of the SIMD&amp;FP source register, encoded in the "M:Vm" field.</para>
</intro>
</account>
</explanation>
</explanations>
<ps_section howmany="1">
<ps name="aarch32/instrs/VCVT_iv/Op_A.txt" mylink="execute" enclabels="" sections="1" secttype="Operation">
<pstext mayhavelinks="1" section="Execute" rep_section="execute">if <a link="impl-aarch32.ConditionPassed.0" file="shared_pseudocode.xml" hover="function: boolean ConditionPassed()">ConditionPassed</a>() then
EncodingSpecificOperations(); <a link="impl-aarch32.CheckVFPEnabled.1" file="shared_pseudocode.xml" hover="function: CheckVFPEnabled(boolean include_fpexc_check)">CheckVFPEnabled</a>(TRUE);
if to_integer then
case esize of
when 16
<a link="impl-aarch32.S.write.1" file="shared_pseudocode.xml" hover="accessor: S[integer n] = bits(32) value">S</a>[d] = <a link="impl-shared.FPToFixed.6" file="shared_pseudocode.xml" hover="function: bits(M) FPToFixed(bits(N) op, integer fbits, boolean unsigned, FPCRType fpcr, FPRounding rounding, integer M)">FPToFixed</a>(<a link="impl-aarch32.S.read.1" file="shared_pseudocode.xml" hover="accessor: bits(32) S[integer n]">S</a>[m]&lt;15:0&gt;, 0, unsigned, FPSCR[], rounding, 32);
when 32
<a link="impl-aarch32.S.write.1" file="shared_pseudocode.xml" hover="accessor: S[integer n] = bits(32) value">S</a>[d] = <a link="impl-shared.FPToFixed.6" file="shared_pseudocode.xml" hover="function: bits(M) FPToFixed(bits(N) op, integer fbits, boolean unsigned, FPCRType fpcr, FPRounding rounding, integer M)">FPToFixed</a>(<a link="impl-aarch32.S.read.1" file="shared_pseudocode.xml" hover="accessor: bits(32) S[integer n]">S</a>[m], 0, unsigned, FPSCR[], rounding, 32);
when 64
<a link="impl-aarch32.S.write.1" file="shared_pseudocode.xml" hover="accessor: S[integer n] = bits(32) value">S</a>[d] = <a link="impl-shared.FPToFixed.6" file="shared_pseudocode.xml" hover="function: bits(M) FPToFixed(bits(N) op, integer fbits, boolean unsigned, FPCRType fpcr, FPRounding rounding, integer M)">FPToFixed</a>(<a link="impl-aarch32.D.read.1" file="shared_pseudocode.xml" hover="accessor: bits(64) D[integer n]">D</a>[m], 0, unsigned, FPSCR[], rounding, 32);
else
case esize of
when 16
bits(16) fp16 = <a link="impl-shared.FixedToFP.6" file="shared_pseudocode.xml" hover="function: bits(N) FixedToFP(bits(M) op, integer fbits, boolean unsigned, FPCRType fpcr, FPRounding rounding, integer N)">FixedToFP</a>(<a link="impl-aarch32.S.read.1" file="shared_pseudocode.xml" hover="accessor: bits(32) S[integer n]">S</a>[m], 0, unsigned, FPSCR[], rounding, 16);
<a link="impl-aarch32.S.write.1" file="shared_pseudocode.xml" hover="accessor: S[integer n] = bits(32) value">S</a>[d] = <a link="impl-shared.Zeros.1" file="shared_pseudocode.xml" hover="function: bits(N) Zeros(integer N)">Zeros</a>(16):fp16;
when 32
<a link="impl-aarch32.S.write.1" file="shared_pseudocode.xml" hover="accessor: S[integer n] = bits(32) value">S</a>[d] = <a link="impl-shared.FixedToFP.6" file="shared_pseudocode.xml" hover="function: bits(N) FixedToFP(bits(M) op, integer fbits, boolean unsigned, FPCRType fpcr, FPRounding rounding, integer N)">FixedToFP</a>(<a link="impl-aarch32.S.read.1" file="shared_pseudocode.xml" hover="accessor: bits(32) S[integer n]">S</a>[m], 0, unsigned, FPSCR[], rounding, 32);
when 64
<a link="impl-aarch32.D.write.1" file="shared_pseudocode.xml" hover="accessor: D[integer n] = bits(64) value">D</a>[d] = <a link="impl-shared.FixedToFP.6" file="shared_pseudocode.xml" hover="function: bits(N) FixedToFP(bits(M) op, integer fbits, boolean unsigned, FPCRType fpcr, FPRounding rounding, integer N)">FixedToFP</a>(<a link="impl-aarch32.S.read.1" file="shared_pseudocode.xml" hover="accessor: bits(32) S[integer n]">S</a>[m], 0, unsigned, FPSCR[], rounding, 64);</pstext>
</ps>
</ps_section>
</instructionsection>
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