archived-ballistic/spec/arm64_xml/cfinv.xml

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<instructionsection id="CFINV" title="CFINV -- A64" type="instruction">
  <docvars>
    <docvar key="instr-class" value="system" />
    <docvar key="isa" value="A64" />
    <docvar key="mnemonic" value="CFINV" />
  </docvars>
  <heading>CFINV</heading>
  <desc>
    <brief>
      <para>Invert Carry Flag</para>
    </brief>
    <authored>
      <para>Invert Carry Flag. This instruction inverts the value of the PSTATE.C flag.</para>
    </authored>
  </desc>
  <operationalnotes>
    <para>If PSTATE.DIT is 1:</para>
    <list type="unordered">
      <listitem><content>The execution time of this instruction is independent of:<list type="unordered"><listitem><content>The values of the data supplied in any of its registers.</content></listitem><listitem><content>The values of the NZCV flags.</content></listitem></list></content></listitem>
      <listitem><content>The response of this instruction to asynchronous exceptions does not vary based on:<list type="unordered"><listitem><content>The values of the data supplied in any of its registers.</content></listitem><listitem><content>The values of the NZCV flags.</content></listitem></list></content></listitem>
    </list>
  </operationalnotes>
  <alias_list howmany="0"></alias_list>
  <classes>
    <iclass name="System" oneof="1" id="iclass_system" no_encodings="1" isa="A64">
      <docvars>
        <docvar key="instr-class" value="system" />
        <docvar key="isa" value="A64" />
        <docvar key="mnemonic" value="CFINV" />
      </docvars>
      <iclassintro count="1"></iclassintro>
      <arch_variants>
        <arch_variant name="ARMv8.4" feature="FEAT_FlagM" />
      </arch_variants>
      <regdiagram form="32" psname="aarch64/instrs/integer/flags/cfinv" tworows="1">
        <box hibit="31" width="10" settings="10">
          <c>1</c>
          <c>1</c>
          <c>0</c>
          <c>1</c>
          <c>0</c>
          <c>1</c>
          <c>0</c>
          <c>1</c>
          <c>0</c>
          <c>0</c>
        </box>
        <box hibit="21" name="L" settings="1">
          <c>0</c>
        </box>
        <box hibit="20" name="op0[1]" settings="1">
          <c>0</c>
        </box>
        <box hibit="19" name="op0[0]" settings="1">
          <c>0</c>
        </box>
        <box hibit="18" width="3" name="op1" settings="3">
          <c>0</c>
          <c>0</c>
          <c>0</c>
        </box>
        <box hibit="15" width="4" name="CRn" settings="4">
          <c>0</c>
          <c>1</c>
          <c>0</c>
          <c>0</c>
        </box>
        <box hibit="11" width="4" name="CRm" usename="1" settings="4" psbits="xxxx">
          <c>(0)</c>
          <c>(0)</c>
          <c>(0)</c>
          <c>(0)</c>
        </box>
        <box hibit="7" width="3" name="op2" settings="3">
          <c>0</c>
          <c>0</c>
          <c>0</c>
        </box>
        <box hibit="4" width="5" name="Rt" settings="5">
          <c>1</c>
          <c>1</c>
          <c>1</c>
          <c>1</c>
          <c>1</c>
        </box>
      </regdiagram>
      <encoding name="CFINV_M_pstate" oneofinclass="1" oneof="1" label="">
        <docvars>
          <docvar key="instr-class" value="system" />
          <docvar key="isa" value="A64" />
          <docvar key="mnemonic" value="CFINV" />
        </docvars>
        <asmtemplate><text>CFINV</text></asmtemplate>
      </encoding>
      <ps_section howmany="1">
        <ps name="aarch64/instrs/integer/flags/cfinv" mylink="aarch64.instrs.integer.flags.cfinv" enclabels="" sections="1" secttype="noheading">
          <pstext mayhavelinks="1" section="Decode" rep_section="decode">if !<a link="impl-shared.HaveFlagManipulateExt.0" file="shared_pseudocode.xml" hover="function: boolean HaveFlagManipulateExt()">HaveFlagManipulateExt</a>() then UNDEFINED;</pstext>
        </ps>
      </ps_section>
    </iclass>
  </classes>
  <explanations scope="all"></explanations>
  <ps_section howmany="1">
    <ps name="aarch64/instrs/integer/flags/cfinv" mylink="execute" enclabels="" sections="1" secttype="Operation">
      <pstext mayhavelinks="1" section="Execute" rep_section="execute">PSTATE.C = NOT(PSTATE.C);</pstext>
    </ps>
  </ps_section>
</instructionsection>