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    <compoundname>getfreepage.c</compoundname>
    <includes refid="vmm_8h" local="no">vmm/vmm.h</includes>
    <includes refid="kpanic_8h" local="no">ubixos/kpanic.h</includes>
    <includes refid="spinlock_8h" local="no">ubixos/spinlock.h</includes>
    <incdepgraph>
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        <label>vmm/paging.h</label>
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        </childnode>
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        </childnode>
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        <label>src/sys/vmm/getfreepage.c</label>
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        <type>void *</type>
        <definition>void* vmmGetFreePage</definition>
        <argsstring>(pidType pid)</argsstring>
        <name>vmmGetFreePage</name>
        <param>
          <type><ref refid="types_8h_1e438ba74394b14d7b24b6df3b3b8c252" kindref="member">pidType</ref></type>
          <declname>pid</declname>
        </param>
        <briefdescription>
        </briefdescription>
        <detaileddescription>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
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        <references refid="paging_8h_18b838cda4f0bc79ab8d07eb19dd35420" compoundref="paging_8h" startline="53">KERNEL_PAGE_DEFAULT</references>
        <references refid="kpanic_8h_1db9a182aa071791a306163d50d653deb" compoundref="kpanic_8c" startline="42" endline="60">kpanic</references>
        <references refid="spinlock_8h_12cd9a4502680fb8e7f0fe6b029e558b1" compoundref="spinlock_8c" startline="56" endline="62">spinLock</references>
        <references refid="spinlock_8h_1dd996cbbb3b9826dd9c8cf02b66a4c65" compoundref="spinlock_8c" startline="37" endline="46">spinUnlock</references>
        <references refid="paging_8h_1a432d41840ad8a583a7e6af86feece4f" compoundref="paging_8h" startline="43">tablesBaseAddress</references>
        <references refid="paging_8h_1a05f8d8947fb5bcec87fc6661f83243e" compoundref="paging_8c" startline="160" endline="241">vmm_remapPage</references>
        <references refid="paging_8h_1230a160ddb717c5a133e55aa42e9d324" compoundref="paging_8c" startline="314" endline="329">vmmClearVirtualPage</references>
        <references refid="vmm_8h_1976cf3919bf7c77c868021ec9374593b" compoundref="vmm__memory_8c" startline="186" endline="216">vmmFindFreePage</references>
        <references refid="getfreepage_8c_1ebc7aa9c5f3b171c3e2660c4f102b248" compoundref="getfreepage_8c" startline="34">vmmGFPlock</references>
        <references refid="ap-boot_8S_1f78b91f02427adef14bb8b28aa93baa5" compoundref="ap-boot_8S" startline="52">x1000</references>
        <referencedby refid="createvirtualspace_8c_1c8f92aa05b669f43457fed9002d6cb40" compoundref="createvirtualspace_8c" startline="81" endline="143">vmmCreateVirtualSpace</referencedby>
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        <type><ref refid="spinlock_8h_1a240e9404b4ede1e0d714610080d1176" kindref="member">spinLock_t</ref></type>
        <definition>spinLock_t vmmGFPlock</definition>
        <argsstring></argsstring>
        <name>vmmGFPlock</name>
        <initializer> SPIN_LOCK_INITIALIZER</initializer>
        <briefdescription>
        </briefdescription>
        <detaileddescription>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="/usr/home/reddawg/source/ubix2/src/sys/vmm/getfreepage.c" line="34" bodyfile="/usr/home/reddawg/source/ubix2/src/sys/vmm/getfreepage.c" bodystart="34" bodyend="-1"/>
        <referencedby refid="getfreepage_8c_197b73a5761e664ab5c0c24382971a2e6" compoundref="getfreepage_8c" startline="48" endline="77">vmmGetFreePage</referencedby>
      </memberdef>
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    <briefdescription>
    </briefdescription>
    <detaileddescription>
    </detaileddescription>
    <programlisting>
<codeline lineno="1"><highlight class="comment">/*****************************************************************************************</highlight></codeline>
<codeline lineno="2"><highlight class="comment"><sp/>Copyright<sp/>(c)<sp/>2002<sp/>The<sp/>UbixOS<sp/>Project</highlight></codeline>
<codeline lineno="3"><highlight class="comment"><sp/>All<sp/>rights<sp/>reserved.</highlight></codeline>
<codeline lineno="4"><highlight class="comment"></highlight></codeline>
<codeline lineno="5"><highlight class="comment">Redistribution<sp/>and<sp/>use<sp/>in<sp/>source<sp/>and<sp/>binary<sp/>forms,<sp/>with<sp/>or<sp/>without<sp/>modification,<sp/>are</highlight></codeline>
<codeline lineno="6"><highlight class="comment">permitted<sp/>provided<sp/>that<sp/>the<sp/>following<sp/>conditions<sp/>are<sp/>met:</highlight></codeline>
<codeline lineno="7"><highlight class="comment"></highlight></codeline>
<codeline lineno="8"><highlight class="comment">Redistributions<sp/>of<sp/>source<sp/>code<sp/>must<sp/>retain<sp/>the<sp/>above<sp/>copyright<sp/>notice,<sp/>this<sp/>list<sp/>of</highlight></codeline>
<codeline lineno="9"><highlight class="comment">conditions,<sp/>the<sp/>following<sp/>disclaimer<sp/>and<sp/>the<sp/>list<sp/>of<sp/>authors.<sp/><sp/>Redistributions<sp/>in<sp/>binary</highlight></codeline>
<codeline lineno="10"><highlight class="comment">form<sp/>must<sp/>reproduce<sp/>the<sp/>above<sp/>copyright<sp/>notice,<sp/>this<sp/>list<sp/>of<sp/>conditions,<sp/>the<sp/>following</highlight></codeline>
<codeline lineno="11"><highlight class="comment">disclaimer<sp/>and<sp/>the<sp/>list<sp/>of<sp/>authors<sp/>in<sp/>the<sp/>documentation<sp/>and/or<sp/>other<sp/>materials<sp/>provided</highlight></codeline>
<codeline lineno="12"><highlight class="comment">with<sp/>the<sp/>distribution.<sp/>Neither<sp/>the<sp/>name<sp/>of<sp/>the<sp/>UbixOS<sp/>Project<sp/>nor<sp/>the<sp/>names<sp/>of<sp/>its</highlight></codeline>
<codeline lineno="13"><highlight class="comment">contributors<sp/>may<sp/>be<sp/>used<sp/>to<sp/>endorse<sp/>or<sp/>promote<sp/>products<sp/>derived<sp/>from<sp/>this<sp/>software</highlight></codeline>
<codeline lineno="14"><highlight class="comment">without<sp/>specific<sp/>prior<sp/>written<sp/>permission.</highlight></codeline>
<codeline lineno="15"><highlight class="comment"></highlight></codeline>
<codeline lineno="16"><highlight class="comment">THIS<sp/>SOFTWARE<sp/>IS<sp/>PROVIDED<sp/>BY<sp/>THE<sp/>COPYRIGHT<sp/>HOLDERS<sp/>AND<sp/>CONTRIBUTORS<sp/>&quot;AS<sp/>IS&quot;<sp/>AND<sp/>ANY</highlight></codeline>
<codeline lineno="17"><highlight class="comment">EXPRESS<sp/>OR<sp/>IMPLIED<sp/>WARRANTIES,<sp/>INCLUDING,<sp/>BUT<sp/>NOT<sp/>LIMITED<sp/>TO,<sp/>THE<sp/>IMPLIED<sp/>WARRANTIES<sp/>OF</highlight></codeline>
<codeline lineno="18"><highlight class="comment">MERCHANTABILITY<sp/>AND<sp/>FITNESS<sp/>FOR<sp/>A<sp/>PARTICULAR<sp/>PURPOSE<sp/>ARE<sp/>DISCLAIMED.<sp/>IN<sp/>NO<sp/>EVENT<sp/>SHALL</highlight></codeline>
<codeline lineno="19"><highlight class="comment">THE<sp/>COPYRIGHT<sp/>OWNER<sp/>OR<sp/>CONTRIBUTORS<sp/>BE<sp/>LIABLE<sp/>FOR<sp/>ANY<sp/>DIRECT,<sp/>INDIRECT,<sp/>INCIDENTAL,</highlight></codeline>
<codeline lineno="20"><highlight class="comment">SPECIAL,<sp/>EXEMPLARY,<sp/>OR<sp/>CONSEQUENTIAL<sp/>DAMAGES<sp/>(INCLUDING,<sp/>BUT<sp/>NOT<sp/>LIMITED<sp/>TO,<sp/>PROCUREMENT</highlight></codeline>
<codeline lineno="21"><highlight class="comment">OF<sp/>SUBSTITUTE<sp/>GOODS<sp/>OR<sp/>SERVICES;<sp/>LOSS<sp/>OF<sp/>USE,<sp/>DATA,<sp/>OR<sp/>PROFITS;<sp/>OR<sp/>BUSINESS<sp/>INTERRUPTION)</highlight></codeline>
<codeline lineno="22"><highlight class="comment">HOWEVER<sp/>CAUSED<sp/>AND<sp/>ON<sp/>ANY<sp/>THEORY<sp/>OF<sp/>LIABILITY,<sp/>WHETHER<sp/>IN<sp/>CONTRACT,<sp/>STRICT<sp/>LIABILITY,<sp/>OR</highlight></codeline>
<codeline lineno="23"><highlight class="comment">TORT<sp/>(INCLUDING<sp/>NEGLIGENCE<sp/>OR<sp/>OTHERWISE)<sp/>ARISING<sp/>IN<sp/>ANY<sp/>WAY<sp/>OUT<sp/>OF<sp/>THE<sp/>USE<sp/>OF<sp/>THIS</highlight></codeline>
<codeline lineno="24"><highlight class="comment">SOFTWARE,<sp/>EVEN<sp/>IF<sp/>ADVISED<sp/>OF<sp/>THE<sp/>POSSIBILITY<sp/>OF<sp/>SUCH<sp/>DAMAGE.</highlight></codeline>
<codeline lineno="25"><highlight class="comment"></highlight></codeline>
<codeline lineno="26"><highlight class="comment"><sp/>$Id$</highlight></codeline>
<codeline lineno="27"><highlight class="comment"></highlight></codeline>
<codeline lineno="28"><highlight class="comment">*****************************************************************************************/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="29"><highlight class="normal"></highlight></codeline>
<codeline lineno="30"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>&lt;<ref refid="vmm_8h" kindref="compound">vmm/vmm.h</ref>&gt;</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="31"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>&lt;<ref refid="kpanic_8h" kindref="compound">ubixos/kpanic.h</ref>&gt;</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="32"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>&lt;<ref refid="spinlock_8h" kindref="compound">ubixos/spinlock.h</ref>&gt;</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="33"><highlight class="normal"></highlight></codeline>
<codeline lineno="34" refid="getfreepage_8c_1ebc7aa9c5f3b171c3e2660c4f102b248" refkind="member"><highlight class="normal"></highlight><highlight class="keyword">static</highlight><highlight class="normal"><sp/><ref refid="spinlock_8h_1a240e9404b4ede1e0d714610080d1176" kindref="member">spinLock_t</ref><sp/><ref refid="getfreepage_8c_1ebc7aa9c5f3b171c3e2660c4f102b248" kindref="member">vmmGFPlock</ref><sp/>=<sp/><ref refid="spinlock_8h_10fe85a4f3642683148b25916d6c5eafd" kindref="member">SPIN_LOCK_INITIALIZER</ref>;</highlight></codeline>
<codeline lineno="35"><highlight class="normal"></highlight></codeline>
<codeline lineno="36"><highlight class="normal"></highlight><highlight class="comment">/************************************************************************</highlight></codeline>
<codeline lineno="37"><highlight class="comment"></highlight></codeline>
<codeline lineno="38"><highlight class="comment">Function:<sp/>void<sp/>*vmmGetFreePage(pidType<sp/>pid);</highlight></codeline>
<codeline lineno="39"><highlight class="comment"></highlight></codeline>
<codeline lineno="40"><highlight class="comment">Description:<sp/>Returns<sp/>A<sp/>Free<sp/>Page<sp/>Mapped<sp/>To<sp/>The<sp/>VM<sp/>Space</highlight></codeline>
<codeline lineno="41"><highlight class="comment"></highlight></codeline>
<codeline lineno="42"><highlight class="comment">Notes:</highlight></codeline>
<codeline lineno="43"><highlight class="comment"></highlight></codeline>
<codeline lineno="44"><highlight class="comment">07/30/02<sp/>-<sp/>This<sp/>Returns<sp/>A<sp/>Free<sp/>Page<sp/>In<sp/>The<sp/>Top<sp/>1GB<sp/>For<sp/>The<sp/>Kernel</highlight></codeline>
<codeline lineno="45"><highlight class="comment"></highlight></codeline>
<codeline lineno="46"><highlight class="comment">************************************************************************/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="47"><highlight class="normal"></highlight><highlight class="keywordtype">void</highlight><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>*</highlight></codeline>
<codeline lineno="48" refid="getfreepage_8c_197b73a5761e664ab5c0c24382971a2e6" refkind="member"><highlight class="normal"><ref refid="paging_8h_1d006a10f436671f8ee9cb402e372ff02" kindref="member">vmmGetFreePage</ref>(<ref refid="types_8h_1e438ba74394b14d7b24b6df3b3b8c252" kindref="member">pidType</ref><sp/>pid)</highlight></codeline>
<codeline lineno="49"><highlight class="normal">{</highlight></codeline>
<codeline lineno="50"><highlight class="normal"><sp/><sp/><ref refid="types_8h_13b65128d2644e9b80cec9a69bfa7e094" kindref="member">uInt16</ref><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>x<sp/>=<sp/>0x0,<sp/>y<sp/>=<sp/>0x0;</highlight></codeline>
<codeline lineno="51"><highlight class="normal"><sp/><sp/><ref refid="types_8h_15847ea0262a5aa61eee48cbe95544a78" kindref="member">uInt32</ref><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>*pageTableSrc<sp/>=<sp/>0x0;</highlight></codeline>
<codeline lineno="52"><highlight class="normal"><sp/><sp/></highlight></codeline>
<codeline lineno="53"><highlight class="normal"><sp/><sp/><ref refid="spinlock_8h_12cd9a4502680fb8e7f0fe6b029e558b1" kindref="member">spinLock</ref>(&amp;<ref refid="getfreepage_8c_1ebc7aa9c5f3b171c3e2660c4f102b248" kindref="member">vmmGFPlock</ref>);</highlight></codeline>
<codeline lineno="54"><highlight class="normal"><sp/><sp/></highlight></codeline>
<codeline lineno="55"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">/*<sp/>Lets<sp/>Search<sp/>For<sp/>A<sp/>Free<sp/>Page<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="56"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">for</highlight><highlight class="normal"><sp/>(x<sp/>=<sp/>768;<sp/>x<sp/>&lt;<sp/>1024;<sp/>x++)<sp/>{</highlight></codeline>
<codeline lineno="57"><highlight class="normal"></highlight></codeline>
<codeline lineno="58"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">/*<sp/>Set<sp/>Page<sp/>Table<sp/>Address<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="59"><highlight class="normal"><sp/><sp/><sp/><sp/>pageTableSrc<sp/>=<sp/>(<ref refid="types_8h_15847ea0262a5aa61eee48cbe95544a78" kindref="member">uInt32</ref><sp/>*)<sp/>(<ref refid="paging_8h_1a432d41840ad8a583a7e6af86feece4f" kindref="member">tablesBaseAddress</ref><sp/>+<sp/>(0<ref refid="ap-boot_8S_1f78b91f02427adef14bb8b28aa93baa5" kindref="member">x1000</ref><sp/>*<sp/>x));</highlight></codeline>
<codeline lineno="60"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">for</highlight><highlight class="normal"><sp/>(y<sp/>=<sp/>0x0;<sp/>y<sp/>&lt;<sp/>1024;<sp/>y++)<sp/>{</highlight></codeline>
<codeline lineno="61"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="comment">/*<sp/>Loop<sp/>Through<sp/>The<sp/>Page<sp/>Table<sp/>Find<sp/>An<sp/>UnAllocated<sp/>Page<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="62"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>((<ref refid="types_8h_15847ea0262a5aa61eee48cbe95544a78" kindref="member">uInt32</ref>)<sp/>pageTableSrc[y]<sp/>==<sp/>(uInt32)<sp/>0x0)<sp/>{</highlight></codeline>
<codeline lineno="63"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="comment">/*<sp/>Map<sp/>A<sp/>Physical<sp/>Page<sp/>To<sp/>The<sp/>Virtual<sp/>Page<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="64"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>((<ref refid="paging_8h_1a05f8d8947fb5bcec87fc6661f83243e" kindref="member">vmm_remapPage</ref>(<ref refid="vmm_8h_1976cf3919bf7c77c868021ec9374593b" kindref="member">vmmFindFreePage</ref>(pid),<sp/>((x<sp/>*<sp/>0x400000)<sp/>+<sp/>(y<sp/>*<sp/>0<ref refid="ap-boot_8S_1f78b91f02427adef14bb8b28aa93baa5" kindref="member">x1000</ref>)),<ref refid="paging_8h_18b838cda4f0bc79ab8d07eb19dd35420" kindref="member">KERNEL_PAGE_DEFAULT</ref>))<sp/>==<sp/>0x0)</highlight></codeline>
<codeline lineno="65"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="kpanic_8h_1db9a182aa071791a306163d50d653deb" kindref="member">kpanic</ref>(</highlight><highlight class="stringliteral">&quot;vmmRemapPage:<sp/>vmmGetFreePage\n&quot;</highlight><highlight class="normal">);</highlight></codeline>
<codeline lineno="66"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="comment">/*<sp/>Clear<sp/>This<sp/>Page<sp/>So<sp/>No<sp/>Garbage<sp/>Is<sp/>There<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="67"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="paging_8h_1230a160ddb717c5a133e55aa42e9d324" kindref="member">vmmClearVirtualPage</ref>((uInt32)<sp/>((x<sp/>*<sp/>0x400000)<sp/>+<sp/>(y<sp/>*<sp/>0x1000)));</highlight></codeline>
<codeline lineno="68"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="comment">/*<sp/>Return<sp/>The<sp/>Address<sp/>Of<sp/>The<sp/>Newly<sp/>Allocate<sp/>Page<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="69"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="spinlock_8h_1dd996cbbb3b9826dd9c8cf02b66a4c65" kindref="member">spinUnlock</ref>(&amp;<ref refid="getfreepage_8c_1ebc7aa9c5f3b171c3e2660c4f102b248" kindref="member">vmmGFPlock</ref>);</highlight></codeline>
<codeline lineno="70"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>((</highlight><highlight class="keywordtype">void</highlight><highlight class="normal"><sp/>*)((x<sp/>*<sp/>0x400000)<sp/>+<sp/>(y<sp/>*<sp/>0x1000)));</highlight></codeline>
<codeline lineno="71"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="72"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="73"><highlight class="normal"><sp/><sp/>}</highlight></codeline>
<codeline lineno="74"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">/*<sp/>If<sp/>No<sp/>Free<sp/>Page<sp/>Was<sp/>Found<sp/>Return<sp/>NULL<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="75"><highlight class="normal"><sp/><sp/><ref refid="spinlock_8h_1dd996cbbb3b9826dd9c8cf02b66a4c65" kindref="member">spinUnlock</ref>(&amp;<ref refid="getfreepage_8c_1ebc7aa9c5f3b171c3e2660c4f102b248" kindref="member">vmmGFPlock</ref>);</highlight></codeline>
<codeline lineno="76"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>(0x0);</highlight></codeline>
<codeline lineno="77"><highlight class="normal">}</highlight></codeline>
<codeline lineno="78"><highlight class="normal"></highlight></codeline>
<codeline lineno="79"><highlight class="normal"></highlight><highlight class="comment">/***</highlight></codeline>
<codeline lineno="80"><highlight class="comment"><sp/>END</highlight></codeline>
<codeline lineno="81"><highlight class="comment"><sp/>***/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="82"><highlight class="normal"></highlight></codeline>
    </programlisting>
    <location file="/usr/home/reddawg/source/ubix2/src/sys/vmm/getfreepage.c"/>
  </compounddef>
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