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<instructionsection id="mova_za_mz4" title="MOVA (vector to array, four registers)" type="instruction">
  <docvars>
    <docvar key="instr-class" value="mortlach2" />
    <docvar key="isa" value="A64" />
    <docvar key="mnemonic" value="MOVA" />
  </docvars>
  <heading>MOVA (vector to array, four registers)</heading>
  <desc>
    <brief>Move four vector registers to four ZA single-vector groups</brief>
    <description>
      <para>The instruction operates on four ZA single-vector groups. The vector numbers forming the single-vector group within each quarter of the ZA array are selected by the sum of the vector select register and immediate offset, modulo quarter the number of ZA array vectors.</para>
      <para>The <arm-defined-word>vector group</arm-defined-word> symbol <syntax>VGx4</syntax> indicates that the instruction operates on four ZA single-vector groups.</para>
      <para>The preferred disassembly syntax uses a 64-bit element size, but an assembler should accept any element size if it is used consistently for all operands. The <arm-defined-word>vector group</arm-defined-word> symbol is preferred for disassembly, but optional in assembler source code.</para>
      <para>This instruction is unpredicated.</para>
    </description>
    <status>Green</status>
    <predicated>False</predicated>
    <uses_dit condition="FEAT_SVE2 is implemented or FEAT_SME is implemented">True</uses_dit>
    <sm_policy>SM_1_only</sm_policy>
  </desc>
  <alias_list howmany="1">
    <alias_list_intro>This instruction is used by the alias </alias_list_intro>
    <aliasref aliaspageid="MOV_mova_za_mz4" aliasfile="mov_mova_za_mz4.xml" hover="Move four vector registers to four ZA single-vector groups" punct=".">
      <text>MOV (vector to array, four registers)</text>
      <aliaspref>Unconditionally</aliaspref>
    </aliasref>
    <alias_list_outro> The alias is always the preferred disassembly.</alias_list_outro>
  </alias_list>
  <classes>
    <iclass name="SME2" oneof="1" id="iclass_mortlach2" no_encodings="1" isa="A64">
      <docvars>
        <docvar key="instr-class" value="mortlach2" />
        <docvar key="isa" value="A64" />
        <docvar key="mnemonic" value="MOVA" />
      </docvars>
      <iclassintro count="1"></iclassintro>
      <arch_variants>
        <arch_variant name="FEAT_SME2" feature="FEAT_SME2" />
      </arch_variants>
      <regdiagram form="32" psname="MOVA-ZA.MZ4-1">
        <box hibit="31" width="2" settings="2">
          <c>1</c>
          <c>1</c>
        </box>
        <box hibit="29" width="15" settings="15">
          <c>0</c>
          <c>0</c>
          <c>0</c>
          <c>0</c>
          <c>0</c>
          <c>0</c>
          <c>0</c>
          <c>0</c>
          <c>0</c>
          <c>0</c>
          <c>0</c>
          <c>1</c>
          <c>0</c>
          <c>0</c>
          <c>0</c>
        </box>
        <box hibit="14" width="2" name="Rv" usename="1">
          <c colspan="2"></c>
        </box>
        <box hibit="12" width="3" settings="3">
          <c>0</c>
          <c>1</c>
          <c>1</c>
        </box>
        <box hibit="9" width="3" name="Zn" usename="1">
          <c colspan="3"></c>
        </box>
        <box hibit="6" width="3" settings="3">
          <c>0</c>
          <c>0</c>
          <c>0</c>
        </box>
        <box hibit="3" settings="1">
          <c>0</c>
        </box>
        <box hibit="2" width="3" name="off3" usename="1">
          <c colspan="3"></c>
        </box>
      </regdiagram>
      <encoding name="mova_za_mz4_1" oneofinclass="1" oneof="1" label="">
        <docvars>
          <docvar key="instr-class" value="mortlach2" />
          <docvar key="isa" value="A64" />
          <docvar key="mnemonic" value="MOVA" />
        </docvars>
        <asmtemplate><text>MOVA    ZA.D[</text><a link="sa_wv" hover="32-bit vector select register W8-W11 (field &quot;Rv&quot;)">&lt;Wv&gt;</a><text>, </text><a link="sa_offs" hover="Vector select offset [0-7] (field &quot;off3&quot;)">&lt;offs&gt;</a><a>{, VGx4}</a><text>], </text><text>{</text><text> </text><a link="sa_zn1" hover="First scalable vector register of a multi-vector sequence (field Zn)">&lt;Zn1&gt;</a><text>.D-</text><a link="sa_zn4" hover="Fourth scalable vector register of a multi-vector sequence (field Zn)">&lt;Zn4&gt;</a><text>.D </text><text>}</text></asmtemplate>
      </encoding>
      <ps_section howmany="1">
        <ps name="MOVA-ZA.MZ4-1" mylink="MOVA-ZA.MZ4-1" 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>() then UNDEFINED;
integer v = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>('010':Rv);
integer offset = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(off3);
integer n = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zn:'00');
constant integer nreg = 4;</pstext>
        </ps>
      </ps_section>
    </iclass>
  </classes>
  <explanations scope="all">
    <explanation enclist="mova_za_mz4_1" symboldefcount="1">
      <symbol link="sa_wv">&lt;Wv&gt;</symbol>
      <account encodedin="Rv">
        <intro>
          <para>Is the 32-bit name of the vector select register W8-W11, encoded in the "Rv" field.</para>
        </intro>
      </account>
    </explanation>
    <explanation enclist="mova_za_mz4_1" symboldefcount="1">
      <symbol link="sa_offs">&lt;offs&gt;</symbol>
      <account encodedin="off3">
        <intro>
          <para>Is the vector select offset, in the range 0 to 7, encoded in the "off3" field.</para>
        </intro>
      </account>
    </explanation>
    <explanation enclist="mova_za_mz4_1" symboldefcount="1">
      <symbol link="sa_zn1">&lt;Zn1&gt;</symbol>
      <account encodedin="Zn">
        <intro>
          <para>Is the name of the first scalable vector register of a multi-vector sequence, encoded as "Zn" times 4.</para>
        </intro>
      </account>
    </explanation>
    <explanation enclist="mova_za_mz4_1" symboldefcount="1">
      <symbol link="sa_zn4">&lt;Zn4&gt;</symbol>
      <account encodedin="Zn">
        <intro>
          <para>Is the name of the fourth scalable vector register of a multi-vector sequence, encoded as "Zn" times 4 plus 3.</para>
        </intro>
      </account>
    </explanation>
  </explanations>
  <ps_section howmany="1">
    <ps name="MOVA-ZA.MZ4-1" mylink="execute" enclabels="" sections="1" secttype="Operation">
      <pstext mayhavelinks="1" section="Execute" rep_section="execute"><a link="impl-aarch64.CheckStreamingSVEAndZAEnabled.0" file="shared_pseudocode.xml" hover="function: CheckStreamingSVEAndZAEnabled()">CheckStreamingSVEAndZAEnabled</a>();
constant integer VL = <a link="impl-aarch64.CurrentVL.read.none" file="shared_pseudocode.xml" hover="accessor: integer CurrentVL">CurrentVL</a>;
integer vectors = VL DIV 8;
integer vstride = vectors DIV nreg;
bits(32) vbase = <a link="impl-aarch64.X.read.2" file="shared_pseudocode.xml" hover="accessor: bits(width) X[integer n, integer width]">X</a>[v, 32];
integer vec = (<a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(vbase) + offset) MOD vstride;

for r = 0 to nreg-1
    bits(VL) result = <a link="impl-aarch64.Z.read.2" file="shared_pseudocode.xml" hover="accessor: bits(width) Z[integer n, integer width]">Z</a>[n + r, VL];
    <a link="impl-aarch64.ZAvector.write.2" file="shared_pseudocode.xml" hover="accessor: ZAvector[integer index, integer width] = bits(width) value">ZAvector</a>[vec, VL] = result;
    vec = vec + vstride;</pstext>
    </ps>
  </ps_section>
</instructionsection>
