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<instructionsection id="SETPAN" title="SETPAN -- AArch32" type="instruction">
  <docvars>
    <docvar key="instr-class" value="general"/>
    <docvar key="mnemonic" value="SETPAN"/>
  </docvars>
  <heading>SETPAN</heading>
  <desc>
    <brief>
      <para>Set Privileged Access Never</para>
    </brief>
    <authored>
      <para>Set Privileged Access Never writes a new value to
<xref linkend="ARMARM_CHDEDFDC">PSTATE</xref>.PAN.</para>
      <para>This instruction is available only in privileged mode and it is a
NOP when executed in User mode.</para>
    </authored>
  </desc>
  <alias_list howmany="0"/>
  <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="1" isa="A32">
      <docvars>
        <docvar key="armarmheading" value="A1"/>
        <docvar key="instr-class" value="general"/>
        <docvar key="isa" value="A32"/>
        <docvar key="mnemonic" value="SETPAN"/>
      </docvars>
      <iclassintro count="1"/>
      <arch_variants>
        <arch_variant feature="FEAT_PAN" name="v8Ap1"/>
      </arch_variants>
      <regdiagram form="32" psname="A32.uncond_as.uncondmisc.setpan.SETPAN_A1">
        <box hibit="31" width="4" settings="4">
          <c>1</c>
          <c>1</c>
          <c>1</c>
          <c>1</c>
        </box>
        <box hibit="27" width="1" settings="1">
          <c>0</c>
        </box>
        <box hibit="26" width="2" settings="2">
          <c>0</c>
          <c>0</c>
        </box>
        <box hibit="24" width="5" settings="5">
          <c>1</c>
          <c>0</c>
          <c>0</c>
          <c>0</c>
          <c>1</c>
        </box>
        <box hibit="19" width="10" settings="10">
          <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>
        </box>
        <box hibit="9" width="1" name="imm1" usename="1">
          <c colspan="1"/>
        </box>
        <box hibit="8" width="1" settings="1">
          <c>(0)</c>
        </box>
        <box hibit="7" width="4" settings="4">
          <c>0</c>
          <c>0</c>
          <c>0</c>
          <c>0</c>
        </box>
        <box hibit="3" width="4" settings="4">
          <c>(0)</c>
          <c>(0)</c>
          <c>(0)</c>
          <c>(0)</c>
        </box>
      </regdiagram>
      <encoding name="SETPAN_A1" oneofinclass="1" oneof="2" label="">
        <docvars>
          <docvar key="armarmheading" value="A1"/>
          <docvar key="instr-class" value="general"/>
          <docvar key="isa" value="A32"/>
          <docvar key="mnemonic" value="SETPAN"/>
        </docvars>
        <asmtemplate comment="Cannot be conditional"><text>SETPAN{</text><a hover="See x[Standard assembler syntax fields](Babbefhf)." link="qw_option">&lt;q&gt;</a><text>}  #</text><a hover="Is the unsigned immediate 0 or 1, encoded in the &quot;imm1&quot; field." link="imm__103">&lt;imm&gt;</a></asmtemplate>
      </encoding>
      <ps_section howmany="1">
        <ps name="A32.uncond_as.uncondmisc.setpan.SETPAN_A1" sections="1" secttype="noheading">
          <pstext mayhavelinks="1" section="Decode" rep_section="decode">if !IsFeatureImplemented(FEAT_PAN) then Undefined(); end;
let value : bit = imm1;</pstext></ps>
      </ps_section>
    </iclass>
    <iclass name="T1" oneof="2" id="iclass_t1" no_encodings="1" isa="T32">
      <docvars>
        <docvar key="armarmheading" value="T1"/>
        <docvar key="instr-class" value="general"/>
        <docvar key="isa" value="T32"/>
        <docvar key="mnemonic" value="SETPAN"/>
      </docvars>
      <iclassintro count="1"/>
      <arch_variants>
        <arch_variant feature="FEAT_PAN" name="v8Ap1"/>
      </arch_variants>
      <regdiagram form="16" psname="T32.n.misc16.setpan16.SETPAN_T1">
        <box hibit="15" width="4" settings="4">
          <c>1</c>
          <c>0</c>
          <c>1</c>
          <c>1</c>
        </box>
        <box hibit="11" width="4" settings="4">
          <c>0</c>
          <c>1</c>
          <c>1</c>
          <c>0</c>
        </box>
        <box hibit="7" width="2" settings="2">
          <c>0</c>
          <c>0</c>
        </box>
        <box hibit="5" width="1" settings="1">
          <c>0</c>
        </box>
        <box hibit="4" width="1" settings="1">
          <c>(1)</c>
        </box>
        <box hibit="3" width="1" name="imm1" usename="1">
          <c colspan="1"/>
        </box>
        <box hibit="2" width="3" settings="3">
          <c>(0)</c>
          <c>(0)</c>
          <c>(0)</c>
        </box>
      </regdiagram>
      <encoding name="SETPAN_T1" oneofinclass="1" oneof="2" label="">
        <docvars>
          <docvar key="armarmheading" value="T1"/>
          <docvar key="instr-class" value="general"/>
          <docvar key="isa" value="T32"/>
          <docvar key="mnemonic" value="SETPAN"/>
        </docvars>
        <asmtemplate comment="Not permitted in IT block"><text>SETPAN{</text><a hover="See x[Standard assembler syntax fields](Babbefhf)." link="qw_option">&lt;q&gt;</a><text>}  #</text><a hover="Is the unsigned immediate 0 or 1, encoded in the &quot;imm1&quot; field." link="imm__103">&lt;imm&gt;</a></asmtemplate>
      </encoding>
      <ps_section howmany="1">
        <ps name="T32.n.misc16.setpan16.SETPAN_T1" sections="1" secttype="noheading">
          <pstext mayhavelinks="1" section="Decode" rep_section="decode">if InITBlock() then UnpredictableProcedure(); end;
if !IsFeatureImplemented(FEAT_PAN) then Undefined(); end;
let value : bit = imm1;</pstext></ps>
      </ps_section>
    </iclass>
  </classes>
  <explanations scope="all">
    <explanation enclist="SETPAN_A1, SETPAN_T1" 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="SETPAN_A1, SETPAN_T1" symboldefcount="1">
      <symbol link="imm__103">&lt;imm&gt;</symbol>
      <account encodedin="imm1">
        <intro>
          <para>Is the unsigned immediate 0 or 1, encoded in the "imm1" field.</para>
        </intro>
      </account>
    </explanation>
  </explanations>
  <ps_section howmany="1">
    <ps name="A32.uncond_as.uncondmisc.setpan.SETPAN_A1" sections="1" secttype="Operation">
      <pstext mayhavelinks="1" section="Execute" rep_section="execute">EncodingSpecificOperations();
if PSTATE.EL != EL0 then
    PSTATE.PAN = value;
end;</pstext></ps>
  </ps_section>
  <timestamp>2026-03-12 12:23:09</timestamp>
  <commit_id>2025-09_rel_asl1</commit_id>
</instructionsection>
