<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE register_page SYSTEM "registers.dtd">
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<?xml-stylesheet href="one_register.xsl" type="text/xsl" ?>







<register_page>
  <registers>
  
    <register is_register="True" is_internal="False" is_stub_entry="False">
      <reg_short_name>PMEVCNTSVR&lt;n&gt;_EL1</reg_short_name>
        
        <reg_long_name>Performance Monitors Event Count Saved Value Registers</reg_long_name>


        <reg_parent_link id="pmu.xml">PMU</reg_parent_link>

      
            <reg_condition otherwise="RES0">when FEAT_PMUv3_SS is implemented and FEAT_PMUv3_EXT is implemented</reg_condition>
          <reg_array>
              <reg_array_start>0</reg_array_start>
              <reg_array_end>30</reg_array_end>
         </reg_array>
      



    
    <reg_address
        external_access="False"
        mem_map_access="False"
        block_access="True"
        memory_access="True"
        table_id="PMUacccessor0"
    >
  
  <reg_frame>PMU</reg_frame>
  
    
    <reg_offset><hexnumber>0x600 + (8 * n)</hexnumber></reg_offset>
    <reg_access>
    
        
      <reg_access_state>
          <reg_access_level>When DoubleLockStatus(), or !IsCorePowered(), or !AllowExternalPMSSAccess(addrdesc)</reg_access_level>
          <reg_access_type>ERROR</reg_access_type>
      </reg_access_state>
        
      <reg_access_state>
          <reg_access_level>When FEAT_PMUv3_EXTPMN is implemented, IsRange3Counter(n), and !IsMostSecureAccess(addrdesc)</reg_access_level>
          <reg_access_type>RAZ/WI</reg_access_type>
      </reg_access_state>
        
      <reg_access_state>
          <reg_access_type>RO</reg_access_type>
      </reg_access_state>
    </reg_access>
</reg_address>


          <reg_reset_value></reg_reset_value>

      <reg_mappings>
        



    
      
      <reg_mapping>
        
  

    

  

    <mapped_name filename="AArch64-pmevcntsvrn_el1.xml">PMEVCNTSVR&lt;n&gt;_EL1</mapped_name>
  <mapped_type>Architectural</mapped_type>
      <mapped_execution_state>AArch64</mapped_execution_state>
    <mapped_from_startbit>63</mapped_from_startbit>
    <mapped_from_endbit>0</mapped_from_endbit>
    <mapped_to_startbit>63</mapped_to_startbit>
    <mapped_to_endbit>0</mapped_to_endbit>
    <mapped_from_rangeset output="63:0">
      <range>
        <msb>63</msb>
        <lsb>0</lsb>
      </range>
    </mapped_from_rangeset>
    <mapped_to_rangeset output="63:0">
      <range>
        <msb>63</msb>
        <lsb>0</lsb>
      </range>
    </mapped_to_rangeset>

      </reg_mapping>

      </reg_mappings>

        <reg_purpose>
          
    
      <purpose_text>
        <para>Captures the PMU Event counter &lt;n&gt;, <register_link id="pmu.pmevcntrn_el0.xml" state="">PMEVCNTR&lt;n&gt;_EL0</register_link>.</para>
      </purpose_text>

        </reg_purpose>

      <reg_groups>
          <reg_group>PMU</reg_group>
      </reg_groups>
      <reg_configuration>
        
    
      <configuration_text>
        <para>PMEVCNTSVR&lt;n&gt;_EL1 is in the Core power domain.</para>

      </configuration_text>
      <configuration_text>
        <para>If event counter n is not implemented:</para>

      </configuration_text>
      <configuration_text>
        <list type="unordered">
<listitem><content>When <function>IsCorePowered()</function> &amp;&amp; !<function>DoubleLockStatus()</function> &amp;&amp; !<function>OSLockStatus()</function> &amp;&amp; <function>AllowExternalPMUAccess(addrdesc)</function>, accesses are <arm-defined-word>RES0</arm-defined-word>.</content>
</listitem><listitem><content>Otherwise, it is <arm-defined-word>CONSTRAINED UNPREDICTABLE</arm-defined-word> whether accesses to this register are <arm-defined-word>RES0</arm-defined-word> or generate an error response.</content>
</listitem></list>
      </configuration_text>

      </reg_configuration>
      
      
        
      <reg_attributes>
          
    
      <attributes_text>
        <para>PMEVCNTSVR&lt;n&gt;_EL1 is a 64-bit register.</para>
      </attributes_text>

      </reg_attributes>
      <reg_fieldsets>
        






<fields id="fieldset_0" length="64">
  <text_before_fields/>
  <field id="fieldset_0-63_0" has_partial_fieldset="False" is_linked_to_partial_fieldset="False" is_access_restriction_possible="False" is_variable_length="False" is_constant_value="False" is_partial_field="False" is_conditional_field_name="False">
    <field_name>EVCNT</field_name>
    <field_msb>63</field_msb>
    <field_lsb>0</field_lsb>
    <rel_range>63:0</rel_range>
    <field_description order="before">
      <para>Sampled Event Count. The value of <register_link id="pmu.pmevcntrn_el0.xml" state="">PMEVCNTR&lt;n&gt;_EL0</register_link> at the last successful Capture event.</para>
    </field_description>
    <field_resets>
      <field_reset reset_type="Cold">
        <field_reset_conditions>
          <field_reset_condition condition="FEAT_PMUv3_EXTPMN is implemented">
            <field_reset>
              <field_reset_standard_text>AU</field_reset_standard_text>
            </field_reset>
          </field_reset_condition>
        </field_reset_conditions>
      </field_reset>
      <field_reset reset_type="Warm">
        <field_reset_conditions>
          <field_reset_condition condition="FEAT_PMUv3_EXTPMN is not implemented">
            <field_reset>
              <field_reset_standard_text>AU</field_reset_standard_text>
            </field_reset>
          </field_reset_condition>
        </field_reset_conditions>
      </field_reset>
    </field_resets>
  </field>
  <text_after_fields/>
</fields>




<reg_fieldset length="64">
  <fieldat id="fieldset_0-63_0" msb="63" lsb="0"/>
</reg_fieldset>


      </reg_fieldsets>
        <reg_variables>
              <reg_variable variable="n" max="30"/>
        </reg_variables>

      <access_mechanisms>
          






    
        
        <access_mechanism type="BlockAccessAbstract" table_id="PMUacccessor0">
        
        
        
        
        <access_header>Accessible at offset <hexnumber>0x600 + (8 * n)</hexnumber> from PMU</access_header>
    </access_mechanism>

      </access_mechanisms>

      <arch_variants>
      </arch_variants>
  </register>
</registers>
<timestamp>2026-03-26 20:27:25</timestamp>
<commit_id>2026-03_rel</commit_id>
</register_page>