<?xml version="1.0" ?><?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) 2010-2026 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="VMOV_r" title="VMOV (register) -- AArch32" type="instruction">
  <docvars>
    <docvar key="instr-class" value="fpsimd"/>
    <docvar key="mnemonic" value="VMOV"/>
  </docvars>
  <heading>VMOV (register)</heading>
  <desc>
    <brief>
      <para>Copy between FP registers</para>
    </brief>
    <authored>
      <para>Copy between FP registers copies the contents of one FP register to
another.</para>
      <para>Depending on settings in the <xref linkend="ARMARM_AArch32.cpacr">CPACR</xref>,
<xref linkend="ARMARM_AArch32.nsacr">NSACR</xref>,
<xref linkend="ARMARM_AArch32.hcptr">HCPTR</xref>, and
<xref linkend="ARMARM_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="ARMARM_CIHIDDFF">Enabling Advanced
SIMD and floating-point support</xref>.</para>
    </authored>
  </desc>
  <operationalnotes>
    <operationalnote>
      <operationalnote_content>
        <para>This instruction is a data-independent-time instruction as described in <xref linkend="ARMARM_BEIIDCEG">About the DIT bit</xref>.</para>
      </operationalnote_content>
    </operationalnote>
  </operationalnotes>
  <alias_list howmany="0"/>
  <classes>
    <classesintro count="2">
      <txt>It has encodings from the following instruction sets:</txt>
      <txt> A32 (</txt>
      <a href="#iclass_a2">A2</a>
      <txt>)</txt>
      <txt> and </txt>
      <txt> T32 (</txt>
      <a href="#iclass_t2">T2</a>
      <txt>)</txt>
      <txt>.</txt>
    </classesintro>
    <iclass name="A2" oneof="2" id="iclass_a2" no_encodings="2" isa="A32">
      <docvars>
        <docvar key="armarmheading" value="A2"/>
        <docvar key="instr-class" value="fpsimd"/>
        <docvar key="isa" value="A32"/>
        <docvar key="mnemonic" value="VMOV"/>
      </docvars>
      <iclassintro count="2"/>
      <regdiagram form="32" psname="A32.cops_as.fpdp.fpdp2reg.VMOV_r_A2_S" 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" width="1" name="D" usename="1">
          <c colspan="1"/>
        </box>
        <box hibit="21" width="2" settings="2">
          <c>1</c>
          <c>1</c>
        </box>
        <box hibit="19" name="o1" usename="1" settings="1" psbits="x">
          <c>0</c>
        </box>
        <box hibit="18" width="3" name="opc2" usename="1" settings="3" psbits="xxx">
          <c>0</c>
          <c>0</c>
          <c>0</c>
        </box>
        <box hibit="15" width="4" name="Vd" usename="1">
          <c colspan="4"/>
        </box>
        <box hibit="11" width="2" settings="2">
          <c>1</c>
          <c>0</c>
        </box>
        <box hibit="9" width="2" name="size" usename="1" settings="1" psbits="xx">
          <c>1</c>
          <c>x</c>
        </box>
        <box hibit="7" name="o3" usename="1" settings="1" psbits="x">
          <c>0</c>
        </box>
        <box hibit="6" width="1" settings="1">
          <c>1</c>
        </box>
        <box hibit="5" width="1" name="M" usename="1">
          <c colspan="1"/>
        </box>
        <box hibit="4" width="1" settings="1">
          <c>0</c>
        </box>
        <box hibit="3" width="4" name="Vm" usename="1">
          <c colspan="4"/>
        </box>
      </regdiagram>
      <encoding name="VMOV_r_A2_S" oneofinclass="2" oneof="4" label="Single-precision scalar" bitdiffs="size == 10">
        <docvars>
          <docvar key="armarmheading" value="A2"/>
          <docvar key="instr-class" value="fpsimd"/>
          <docvar key="isa" value="A32"/>
          <docvar key="fpdatasize" value="singleprec"/>
          <docvar key="mnemonic" value="VMOV"/>
          <docvar key="mnemonic-fpdatasize" value="VMOV-singleprec"/>
        </docvars>
        <box hibit="9" width="2" name="size">
          <c/>
          <c>0</c>
        </box>
        <asmtemplate><text>VMOV{</text><a hover="See x[Standard assembler syntax fields](Babbefhf)." link="c__5">&lt;c&gt;</a><text>}{</text><a hover="See x[Standard assembler syntax fields](Babbefhf)." link="qw_option">&lt;q&gt;</a><text>}.F32  </text><a hover="Is the 32-bit name of the SIMD&amp;FP destination register, encoded in the &quot;Vd:D&quot; field." link="Vd_D">&lt;Sd&gt;</a><text>, </text><a hover="Is the 32-bit name of the SIMD&amp;FP source register, encoded in the &quot;Vm:M&quot; field." link="Vm_M__2">&lt;Sm&gt;</a></asmtemplate>
      </encoding>
      <encoding name="VMOV_r_A2_D" oneofinclass="2" oneof="4" label="Double-precision scalar" bitdiffs="size == 11">
        <docvars>
          <docvar key="armarmheading" value="A2"/>
          <docvar key="instr-class" value="fpsimd"/>
          <docvar key="isa" value="A32"/>
          <docvar key="fpdatasize" value="doubleprec"/>
          <docvar key="mnemonic" value="VMOV"/>
          <docvar key="mnemonic-fpdatasize" value="VMOV-doubleprec"/>
        </docvars>
        <box hibit="9" width="2" name="size">
          <c/>
          <c>1</c>
        </box>
        <asmtemplate><text>VMOV{</text><a hover="See x[Standard assembler syntax fields](Babbefhf)." link="c__5">&lt;c&gt;</a><text>}{</text><a hover="See x[Standard assembler syntax fields](Babbefhf)." link="qw_option">&lt;q&gt;</a><text>}.F64  </text><a hover="Is the 64-bit name of the SIMD&amp;FP destination register, encoded in the &quot;D:Vd&quot; field." link="D_Vd">&lt;Dd&gt;</a><text>, </text><a hover="Is the 64-bit name of the SIMD&amp;FP source register, encoded in the &quot;M:Vm&quot; field." link="M_Vm__2">&lt;Dm&gt;</a></asmtemplate>
      </encoding>
      <ps_section howmany="1">
        <ps name="A32.cops_as.fpdp.fpdp2reg.VMOV_r_A2_S" sections="1" secttype="noheading">
          <pstext mayhavelinks="1" section="Decode" rep_section="decode">if FPSCR().Len != '000' || FPSCR().Stride != '00' then Undefined(); end;
let d : integer = if size == '11' then UInt(D::Vd) else UInt(Vd::D);
let m : integer = if size == '11' then UInt(M::Vm) else UInt(Vm::M);
let single_register : boolean = (size == '10');
let advsimd : boolean = FALSE;</pstext></ps>
      </ps_section>
    </iclass>
    <iclass name="T2" oneof="2" 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="VMOV"/>
      </docvars>
      <iclassintro count="2"/>
      <regdiagram form="16x2" psname="T32.w.cpaf.fpdp.fp_2r.VMOV_r_T2_S" 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" width="1" name="D" usename="1">
          <c colspan="1"/>
        </box>
        <box hibit="21" width="2" settings="2">
          <c>1</c>
          <c>1</c>
        </box>
        <box hibit="19" name="o1" usename="1" settings="1" psbits="x">
          <c>0</c>
        </box>
        <box hibit="18" width="3" name="opc2" usename="1" settings="3" psbits="xxx">
          <c>0</c>
          <c>0</c>
          <c>0</c>
        </box>
        <box hibit="15" width="4" name="Vd" usename="1">
          <c colspan="4"/>
        </box>
        <box hibit="11" width="2" settings="2">
          <c>1</c>
          <c>0</c>
        </box>
        <box hibit="9" width="2" name="size" usename="1" settings="1" psbits="xx">
          <c>1</c>
          <c>x</c>
        </box>
        <box hibit="7" name="o3" usename="1" settings="1" psbits="x">
          <c>0</c>
        </box>
        <box hibit="6" width="1" settings="1">
          <c>1</c>
        </box>
        <box hibit="5" width="1" name="M" usename="1">
          <c colspan="1"/>
        </box>
        <box hibit="4" width="1" settings="1">
          <c>0</c>
        </box>
        <box hibit="3" width="4" name="Vm" usename="1">
          <c colspan="4"/>
        </box>
      </regdiagram>
      <encoding name="VMOV_r_T2_S" oneofinclass="2" oneof="4" label="Single-precision scalar" bitdiffs="size == 10">
        <docvars>
          <docvar key="armarmheading" value="T2"/>
          <docvar key="instr-class" value="fpsimd"/>
          <docvar key="isa" value="T32"/>
          <docvar key="fpdatasize" value="singleprec"/>
          <docvar key="mnemonic" value="VMOV"/>
          <docvar key="mnemonic-fpdatasize" value="VMOV-singleprec"/>
        </docvars>
        <box hibit="9" width="2" name="size">
          <c/>
          <c>0</c>
        </box>
        <asmtemplate><text>VMOV{</text><a hover="See x[Standard assembler syntax fields](Babbefhf)." link="c__5">&lt;c&gt;</a><text>}{</text><a hover="See x[Standard assembler syntax fields](Babbefhf)." link="qw_option">&lt;q&gt;</a><text>}.F32  </text><a hover="Is the 32-bit name of the SIMD&amp;FP destination register, encoded in the &quot;Vd:D&quot; field." link="Vd_D">&lt;Sd&gt;</a><text>, </text><a hover="Is the 32-bit name of the SIMD&amp;FP source register, encoded in the &quot;Vm:M&quot; field." link="Vm_M__2">&lt;Sm&gt;</a></asmtemplate>
      </encoding>
      <encoding name="VMOV_r_T2_D" oneofinclass="2" oneof="4" label="Double-precision scalar" bitdiffs="size == 11">
        <docvars>
          <docvar key="armarmheading" value="T2"/>
          <docvar key="instr-class" value="fpsimd"/>
          <docvar key="isa" value="T32"/>
          <docvar key="fpdatasize" value="doubleprec"/>
          <docvar key="mnemonic" value="VMOV"/>
          <docvar key="mnemonic-fpdatasize" value="VMOV-doubleprec"/>
        </docvars>
        <box hibit="9" width="2" name="size">
          <c/>
          <c>1</c>
        </box>
        <asmtemplate><text>VMOV{</text><a hover="See x[Standard assembler syntax fields](Babbefhf)." link="c__5">&lt;c&gt;</a><text>}{</text><a hover="See x[Standard assembler syntax fields](Babbefhf)." link="qw_option">&lt;q&gt;</a><text>}.F64  </text><a hover="Is the 64-bit name of the SIMD&amp;FP destination register, encoded in the &quot;D:Vd&quot; field." link="D_Vd">&lt;Dd&gt;</a><text>, </text><a hover="Is the 64-bit name of the SIMD&amp;FP source register, encoded in the &quot;M:Vm&quot; field." link="M_Vm__2">&lt;Dm&gt;</a></asmtemplate>
      </encoding>
      <ps_section howmany="1">
        <ps name="T32.w.cpaf.fpdp.fp_2r.VMOV_r_T2_S" sections="1" secttype="noheading">
          <pstext mayhavelinks="1" section="Decode" rep_section="decode">if FPSCR().Len != '000' || FPSCR().Stride != '00' then Undefined(); end;
let d : integer = if size == '11' then UInt(D::Vd) else UInt(Vd::D);
let m : integer = if size == '11' then UInt(M::Vm) else UInt(Vm::M);
let single_register : boolean = (size == '10');
let advsimd : boolean = FALSE;</pstext></ps>
      </ps_section>
    </iclass>
  </classes>
  <explanations scope="all">
    <explanation enclist="VMOV_r_A2_S, VMOV_r_A2_D, VMOV_r_T2_S, VMOV_r_T2_D" symboldefcount="1">
      <symbol link="c__5">&lt;c&gt;</symbol>
      <account encodedin="cond">
        <intro>
          <para>See <xref linkend="Babbefhf">Standard assembler syntax fields</xref>.</para>
        </intro>
      </account>
    </explanation>
    <explanation enclist="VMOV_r_A2_S, VMOV_r_A2_D, VMOV_r_T2_S, VMOV_r_T2_D" symboldefcount="1">
      <symbol link="qw_option">&lt;q&gt;</symbol>
      <account encodedin="">
        <intro>
          <para>See <xref linkend="Babbefhf">Standard assembler syntax fields</xref>.</para>
        </intro>
      </account>
    </explanation>
    <explanation enclist="VMOV_r_A2_S, VMOV_r_T2_S" symboldefcount="1">
      <symbol link="Vd_D">&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 &quot;Vd:D&quot; field.</para>
        </intro>
      </account>
    </explanation>
    <explanation enclist="VMOV_r_A2_S, VMOV_r_T2_S" symboldefcount="1">
      <symbol link="Vm_M__2">&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 &quot;Vm:M&quot; field.</para>
        </intro>
      </account>
    </explanation>
    <explanation enclist="VMOV_r_A2_D, VMOV_r_T2_D" symboldefcount="1">
      <symbol link="D_Vd">&lt;Dd&gt;</symbol>
      <account encodedin="(D :: Vd)">
        <intro>
          <para>Is the 64-bit name of the SIMD&amp;FP destination register, encoded in the &quot;D:Vd&quot; field.</para>
        </intro>
      </account>
    </explanation>
    <explanation enclist="VMOV_r_A2_D, VMOV_r_T2_D" symboldefcount="1">
      <symbol link="M_Vm__2">&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 &quot;M:Vm&quot; field.</para>
        </intro>
      </account>
    </explanation>
  </explanations>
  <ps_section howmany="1">
    <ps name="A32.cops_as.fpdp.fpdp2reg.VMOV_r_A2_S" sections="1" secttype="Operation">
      <pstext mayhavelinks="1" section="Execute" rep_section="execute">if <a link="func_ConditionPassed_0" file="shared_pseudocode.xml">ConditionPassed</a>() then
    EncodingSpecificOperations();
    <a link="func_CheckAdvSIMDOrVFPEnabled_2" file="shared_pseudocode.xml">CheckAdvSIMDOrVFPEnabled</a>(TRUE, advsimd);
    if single_register then
        <a link="accessor_S_1" file="shared_pseudocode.xml">S</a>(d) = <a link="accessor_S_1" file="shared_pseudocode.xml">S</a>(m);
    else
        <a link="accessor_D_1" file="shared_pseudocode.xml">D</a>(d) = <a link="accessor_D_1" file="shared_pseudocode.xml">D</a>(m);
    end;
end;</pstext></ps>
  </ps_section>
  <timestamp>2026-03-26 20:27:25</timestamp>
  <commit_id>2026-03_rel</commit_id>
</instructionsection>