archived-ballistic/spec/arm64_xml/cmpp_subps.xml

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<instructionsection id="CMPP_SUBPS" title="CMPP -- A64" type="alias">
  <docvars>
    <docvar key="alias_mnemonic" value="CMPP" />
    <docvar key="instr-class" value="general" />
    <docvar key="isa" value="A64" />
    <docvar key="mnemonic" value="SUBPS" />
    <docvar key="source-type" value="src-is-register" />
  </docvars>
  <heading>CMPP</heading>
  <desc>
    <brief>
      <para>Compare with Tag</para>
    </brief>
    <authored>
      <para>Compare with Tag subtracts the 56-bit address held in the second source register from the 56-bit address held in the first source register, updates the condition flags based on the result of the subtraction, and discards the result.</para>
    </authored>
  </desc>
  <aliasto refiform="subps.xml" iformid="SUBPS">SUBPS</aliasto>
  <classes>
    <iclass name="Integer" oneof="1" id="iclass_general" no_encodings="1" isa="A64">
      <docvars>
        <docvar key="instr-class" value="general" />
        <docvar key="isa" value="A64" />
        <docvar key="mnemonic" value="SUBPS" />
      </docvars>
      <iclassintro count="1"></iclassintro>
      <arch_variants>
        <arch_variant name="ARMv8.5" feature="FEAT_MTE" />
      </arch_variants>
      <regdiagram form="32" psname="aarch64/instrs/integer/arithmetic/pointer/mcsubtracttaggedaddresssetflags" tworows="1">
        <box hibit="31" name="sf" settings="1">
          <c>1</c>
        </box>
        <box hibit="30" settings="1">
          <c>0</c>
        </box>
        <box hibit="29" name="S" settings="1">
          <c>1</c>
        </box>
        <box hibit="28" width="8" settings="8">
          <c>1</c>
          <c>1</c>
          <c>0</c>
          <c>1</c>
          <c>0</c>
          <c>1</c>
          <c>1</c>
          <c>0</c>
        </box>
        <box hibit="20" width="5" name="Xm" usename="1">
          <c colspan="5"></c>
        </box>
        <box hibit="15" name="opcode&lt;5&gt;" settings="1">
          <c>0</c>
        </box>
        <box hibit="14" name="opcode&lt;4&gt;" settings="1">
          <c>0</c>
        </box>
        <box hibit="13" name="opcode&lt;3&gt;" settings="1">
          <c>0</c>
        </box>
        <box hibit="12" name="opcode&lt;2&gt;" settings="1">
          <c>0</c>
        </box>
        <box hibit="11" name="opcode&lt;1&gt;" settings="1">
          <c>0</c>
        </box>
        <box hibit="10" name="opcode&lt;0&gt;" settings="1">
          <c>0</c>
        </box>
        <box hibit="9" width="5" name="Xn" usename="1">
          <c colspan="5"></c>
        </box>
        <box hibit="4" width="5" name="Xd" usename="1" settings="5" psbits="xxxxx">
          <c>1</c>
          <c>1</c>
          <c>1</c>
          <c>1</c>
          <c>1</c>
        </box>
      </regdiagram>
      <encoding name="CMPP_SUBPS_64S_dp_2src" oneofinclass="1" oneof="1" label="">
        <docvars>
          <docvar key="alias_mnemonic" value="CMPP" />
          <docvar key="instr-class" value="general" />
          <docvar key="isa" value="A64" />
          <docvar key="mnemonic" value="SUBPS" />
          <docvar key="source-type" value="src-is-register" />
        </docvars>
        <asmtemplate><text>CMPP  </text><a link="sa_xn_sp" hover="First 64-bit source general-purpose register or SP (field &quot;Xn&quot;)">&lt;Xn|SP&gt;</a><text>, </text><a link="sa_xm_sp" hover="Second 64-bit general-purpose source register or SP (field &quot;Xm&quot;)">&lt;Xm|SP&gt;</a></asmtemplate>
        <equivalent_to>
          <asmtemplate><a href="subps.xml#SUBPS_64S_dp_2src">SUBPS</a><text> XZR, </text><a link="sa_xn_sp" hover="First 64-bit source general-purpose register or SP (field &quot;Xn&quot;)">&lt;Xn|SP&gt;</a><text>, </text><a link="sa_xm_sp" hover="Second 64-bit general-purpose source register or SP (field &quot;Xm&quot;)">&lt;Xm|SP&gt;</a></asmtemplate>
          <aliascond>Unconditionally</aliascond>
        </equivalent_to>
      </encoding>
    </iclass>
  </classes>
  <explanations scope="all">
    <explanation enclist="CMPP_SUBPS_64S_dp_2src" symboldefcount="1">
      <symbol link="sa_xn_sp">&lt;Xn|SP&gt;</symbol>
      <account encodedin="Xn">
        <intro>
          <para>Is the 64-bit name of the first source general-purpose register or stack pointer, encoded in the "Xn" field.</para>
        </intro>
      </account>
    </explanation>
    <explanation enclist="CMPP_SUBPS_64S_dp_2src" symboldefcount="1">
      <symbol link="sa_xm_sp">&lt;Xm|SP&gt;</symbol>
      <account encodedin="Xm">
        <intro>
          <para>Is the 64-bit name of the second general-purpose source register or stack pointer, encoded in the "Xm" field.</para>
        </intro>
      </account>
    </explanation>
  </explanations>
</instructionsection>