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<type>struct <ref refid="structspinLock" kindref="compound">spinLock</ref></type>
<definition>struct spinLock pageFaultSpinLock</definition>
<argsstring></argsstring>
<name>pageFaultSpinLock</name>
<initializer>= <ref refid="spinlock_8h_1a0fe85a4f3642683148b25916d6c5eafd" kindref="member">SPIN_LOCK_INITIALIZER</ref></initializer>
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<type>void</type>
<definition>void vmm_pageFault</definition>
<argsstring>(struct trapframe *frame, uint32_t cr2)</argsstring>
<name>vmm_pageFault</name>
<param>
<type>struct <ref refid="structtrapframe" kindref="compound">trapframe</ref> *</type>
<declname>frame</declname>
</param>
<param>
<type><ref refid="include_2sys_2types_8h_1a0238af00180b6d9278fa1c6aa790fdf4" kindref="member">uint32_t</ref></type>
<declname>cr2</declname>
</param>
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<references refid="structtrapframe_1a9e4fa072056d86cd7516e9445822ef34" compoundref="trap_8h" startline="49">trapframe::tf_err</references>
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<codeline lineno="1"><highlight class="comment">/*-</highlight></codeline>
<codeline lineno="2"><highlight class="comment"><sp/>*<sp/>Copyright<sp/>(c)<sp/>2002-2018<sp/>The<sp/>UbixOS<sp/>Project.</highlight></codeline>
<codeline lineno="3"><highlight class="comment"><sp/>*<sp/>All<sp/>rights<sp/>reserved.</highlight></codeline>
<codeline lineno="4"><highlight class="comment"><sp/>*</highlight></codeline>
<codeline lineno="5"><highlight class="comment"><sp/>*<sp/>This<sp/>was<sp/>developed<sp/>by<sp/>Christopher<sp/>W.<sp/>Olsen<sp/>for<sp/>the<sp/>UbixOS<sp/>Project.</highlight></codeline>
<codeline lineno="6"><highlight class="comment"><sp/>*</highlight></codeline>
<codeline lineno="7"><highlight class="comment"><sp/>*<sp/>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<sp/>permitted</highlight></codeline>
<codeline lineno="8"><highlight class="comment"><sp/>*<sp/>provided<sp/>that<sp/>the<sp/>following<sp/>conditions<sp/>are<sp/>met:</highlight></codeline>
<codeline lineno="9"><highlight class="comment"><sp/>*</highlight></codeline>
<codeline lineno="10"><highlight class="comment"><sp/>*<sp/>1)<sp/>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="11"><highlight class="comment"><sp/>*<sp/><sp/><sp/><sp/>conditions,<sp/>the<sp/>following<sp/>disclaimer<sp/>and<sp/>the<sp/>list<sp/>of<sp/>authors.</highlight></codeline>
<codeline lineno="12"><highlight class="comment"><sp/>*<sp/>2)<sp/>Redistributions<sp/>in<sp/>binary<sp/>form<sp/>must<sp/>reproduce<sp/>the<sp/>above<sp/>copyright<sp/>notice,<sp/>this<sp/>list<sp/>of</highlight></codeline>
<codeline lineno="13"><highlight class="comment"><sp/>*<sp/><sp/><sp/><sp/>conditions,<sp/>the<sp/>following<sp/>disclaimer<sp/>and<sp/>the<sp/>list<sp/>of<sp/>authors<sp/>in<sp/>the<sp/>documentation<sp/>and/or</highlight></codeline>
<codeline lineno="14"><highlight class="comment"><sp/>*<sp/><sp/><sp/><sp/>other<sp/>materials<sp/>provided<sp/>with<sp/>the<sp/>distribution.</highlight></codeline>
<codeline lineno="15"><highlight class="comment"><sp/>*<sp/>3)<sp/>Neither<sp/>the<sp/>name<sp/>of<sp/>the<sp/>UbixOS<sp/>Project<sp/>nor<sp/>the<sp/>names<sp/>of<sp/>its<sp/>contributors<sp/>may<sp/>be<sp/>used<sp/>to</highlight></codeline>
<codeline lineno="16"><highlight class="comment"><sp/>*<sp/><sp/><sp/><sp/>endorse<sp/>or<sp/>promote<sp/>products<sp/>derived<sp/>from<sp/>this<sp/>software<sp/>without<sp/>specific<sp/>prior<sp/>written</highlight></codeline>
<codeline lineno="17"><highlight class="comment"><sp/>*<sp/><sp/><sp/><sp/>permission.</highlight></codeline>
<codeline lineno="18"><highlight class="comment"><sp/>*</highlight></codeline>
<codeline lineno="19"><highlight class="comment"><sp/>*<sp/>THIS<sp/>SOFTWARE<sp/>IS<sp/>PROVIDED<sp/>BY<sp/>THE<sp/>AUTHOR<sp/>AND<sp/>CONTRIBUTORS<sp/>"AS<sp/>IS"<sp/>AND<sp/>ANY<sp/>EXPRESS<sp/>OR<sp/>IMPLIED</highlight></codeline>
<codeline lineno="20"><highlight class="comment"><sp/>*<sp/>WARRANTIES,<sp/>INCLUDING,<sp/>BUT<sp/>NOT<sp/>LIMITED<sp/>TO,<sp/>THE<sp/>IMPLIED<sp/>WARRANTIES<sp/>OF<sp/>MERCHANTABILITY<sp/>AND<sp/>FITNESS</highlight></codeline>
<codeline lineno="21"><highlight class="comment"><sp/>*<sp/>FOR<sp/>A<sp/>PARTICULAR<sp/>PURPOSE<sp/>ARE<sp/>DISCLAIMED.<sp/>IN<sp/>NO<sp/>EVENT<sp/>SHALL<sp/>THE<sp/>COPYRIGHT<sp/>OWNER<sp/>OR<sp/>CONTRIBUTORS</highlight></codeline>
<codeline lineno="22"><highlight class="comment"><sp/>*<sp/>BE<sp/>LIABLE<sp/>FOR<sp/>ANY<sp/>DIRECT,<sp/>INDIRECT,<sp/>INCIDENTAL,<sp/>SPECIAL,<sp/>EXEMPLARY,<sp/>OR<sp/>CONSEQUENTIAL<sp/>DAMAGES</highlight></codeline>
<codeline lineno="23"><highlight class="comment"><sp/>*<sp/>(INCLUDING,<sp/>BUT<sp/>NOT<sp/>LIMITED<sp/>TO,<sp/>PROCUREMENT<sp/>OF<sp/>SUBSTITUTE<sp/>GOODS<sp/>OR<sp/>SERVICES;<sp/>LOSS<sp/>OF<sp/>USE,<sp/>DATA,</highlight></codeline>
<codeline lineno="24"><highlight class="comment"><sp/>*<sp/>OR<sp/>PROFITS;<sp/>OR<sp/>BUSINESS<sp/>INTERRUPTION)<sp/>HOWEVER<sp/>CAUSED<sp/>AND<sp/>ON<sp/>ANY<sp/>THEORY<sp/>OF<sp/>LIABILITY,<sp/>WHETHER<sp/>IN</highlight></codeline>
<codeline lineno="25"><highlight class="comment"><sp/>*<sp/>CONTRACT,<sp/>STRICT<sp/>LIABILITY,<sp/>OR<sp/>TORT<sp/>(INCLUDING<sp/>NEGLIGENCE<sp/>OR<sp/>OTHERWISE)<sp/>ARISING<sp/>IN<sp/>ANY<sp/>WAY<sp/>OUT</highlight></codeline>
<codeline lineno="26"><highlight class="comment"><sp/>*<sp/>OF<sp/>THE<sp/>USE<sp/>OF<sp/>THIS<sp/>SOFTWARE,<sp/>EVEN<sp/>IF<sp/>ADVISED<sp/>OF<sp/>THE<sp/>POSSIBILITY<sp/>OF<sp/>SUCH<sp/>DAMAGE.</highlight></codeline>
<codeline lineno="27"><highlight class="comment"><sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="28"><highlight class="normal"></highlight></codeline>
<codeline lineno="29"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/><<ref refid="vmm_8h" kindref="compound">vmm/vmm.h</ref>></highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="30"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/><<ref refid="sched_8h" kindref="compound">ubixos/sched.h</ref>></highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="31"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/><<ref refid="kpanic_8h" kindref="compound">ubixos/kpanic.h</ref>></highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="32"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/><<ref refid="spinlock_8h" kindref="compound">ubixos/spinlock.h</ref>></highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="33"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/><<ref refid="kprintf_8h" kindref="compound">lib/kprintf.h</ref>></highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="34"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/><<ref refid="trap_8h" kindref="compound">sys/trap.h</ref>></highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="35"><highlight class="normal"></highlight></codeline>
<codeline lineno="36"><highlight class="normal"></highlight><highlight class="keyword">static</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">struct<sp/></highlight><highlight class="normal"><ref refid="structspinLock" kindref="compound">spinLock</ref><sp/>pageFaultSpinLock<sp/>=<sp/><ref refid="spinlock_8h_1a0fe85a4f3642683148b25916d6c5eafd" kindref="member">SPIN_LOCK_INITIALIZER</ref>;</highlight></codeline>
<codeline lineno="37"><highlight class="normal"></highlight></codeline>
<codeline lineno="38"><highlight class="normal"></highlight><highlight class="comment">/*****************************************************************************************</highlight></codeline>
<codeline lineno="39"><highlight class="comment"></highlight></codeline>
<codeline lineno="40"><highlight class="comment"><sp/>Function:<sp/><sp/><sp/><sp/>void<sp/>vmm_pageFault(uInt32<sp/>memAddr,uInt32<sp/>eip,uInt32<sp/>esp);</highlight></codeline>
<codeline lineno="41"><highlight class="comment"><sp/>Description:<sp/>This<sp/>is<sp/>the<sp/>page<sp/>fault<sp/>handler,<sp/>it<sp/>will<sp/>handle<sp/>COW<sp/>and<sp/>trap<sp/>all<sp/>other</highlight></codeline>
<codeline lineno="42"><highlight class="comment"><sp/>exceptions<sp/>and<sp/>segfault<sp/>the<sp/>thread.</highlight></codeline>
<codeline lineno="43"><highlight class="comment"></highlight></codeline>
<codeline lineno="44"><highlight class="comment"><sp/>Notes:</highlight></codeline>
<codeline lineno="45"><highlight class="comment"></highlight></codeline>
<codeline lineno="46"><highlight class="comment"><sp/>07/30/02<sp/>-<sp/>Fixed<sp/>COW<sp/>However<sp/>I<sp/>Need<sp/>To<sp/>Think<sp/>Of<sp/>A<sp/>Way<sp/>To<sp/>Impliment</highlight></codeline>
<codeline lineno="47"><highlight class="comment"><sp/>A<sp/>Paging<sp/>System<sp/>Also<sp/>Start<sp/>To<sp/>Add<sp/>Security<sp/>Levels</highlight></codeline>
<codeline lineno="48"><highlight class="comment"></highlight></codeline>
<codeline lineno="49"><highlight class="comment"><sp/>07/27/04<sp/>-<sp/>Added<sp/>spin<sp/>locking<sp/>to<sp/>ensure<sp/>that<sp/>we<sp/>are<sp/>thread<sp/>safe.<sp/>I<sp/>know<sp/>that<sp/>spining<sp/>a</highlight></codeline>
<codeline lineno="50"><highlight class="comment"><sp/>cpu<sp/>is<sp/>a<sp/>waste<sp/>of<sp/>resources<sp/>but<sp/>for<sp/>now<sp/>it<sp/>prevents<sp/>errors.</highlight></codeline>
<codeline lineno="51"><highlight class="comment"></highlight></codeline>
<codeline lineno="52"><highlight class="comment"><sp/>*****************************************************************************************/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="53" refid="pagefault_8c_1a046643b9b8c1ad9efffaaaeb5ff11431" refkind="member"><highlight class="normal"></highlight><highlight class="comment">/*<sp/>void<sp/>vmm_pageFault(uInt32<sp/>memAddr,uInt32<sp/>eip,uInt32<sp/>esp)<sp/>{<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="54"><highlight class="normal"></highlight><highlight class="keywordtype">void</highlight><highlight class="normal"><sp/><ref refid="pagefault_8c_1a046643b9b8c1ad9efffaaaeb5ff11431" kindref="member">vmm_pageFault</ref>(</highlight><highlight class="keyword">struct</highlight><highlight class="normal"><sp/><ref refid="structtrapframe" kindref="compound">trapframe</ref><sp/>*frame,<sp/><ref refid="include_2sys_2types_8h_1a0238af00180b6d9278fa1c6aa790fdf4" kindref="member">uint32_t</ref><sp/>cr2)<sp/>{</highlight></codeline>
<codeline lineno="55"><highlight class="normal"><sp/><sp/><ref refid="objgfx30_8h_1ada085051a6d9a8e00a2cb256d1af14ba" kindref="member">uInt32</ref><sp/>i<sp/>=<sp/>0x0,<sp/>pageTableIndex<sp/>=<sp/>0x0,<sp/>pageDirectoryIndex<sp/>=<sp/>0x0;</highlight></codeline>
<codeline lineno="56"><highlight class="normal"><sp/><sp/><ref refid="objgfx30_8h_1ada085051a6d9a8e00a2cb256d1af14ba" kindref="member">uInt32</ref><sp/>*pageDir<sp/>=<sp/>0x0,<sp/>*pageTable<sp/>=<sp/>0x0;</highlight></codeline>
<codeline lineno="57"><highlight class="normal"><sp/><sp/><ref refid="objgfx30_8h_1ada085051a6d9a8e00a2cb256d1af14ba" kindref="member">uInt32</ref><sp/>*src<sp/>=<sp/>0x0,<sp/>*dst<sp/>=<sp/>0x0;</highlight></codeline>
<codeline lineno="58"><highlight class="normal"></highlight></codeline>
<codeline lineno="59"><highlight class="normal"><sp/><sp/><ref refid="include_2sys_2types_8h_1a0238af00180b6d9278fa1c6aa790fdf4" kindref="member">uint32_t</ref><sp/>esp<sp/>=<sp/>frame-><ref refid="structtrapframe_1acbc06b1642fabea71bfa8ddbba3ede44" kindref="member">tf_esp</ref>;</highlight></codeline>
<codeline lineno="60"><highlight class="normal"><sp/><sp/><ref refid="include_2sys_2types_8h_1a0238af00180b6d9278fa1c6aa790fdf4" kindref="member">uint32_t</ref><sp/>eip<sp/>=<sp/>frame-><ref refid="structtrapframe_1a5d510dabbcd29cf981b17a4c08234c3b" kindref="member">tf_eip</ref>;</highlight></codeline>
<codeline lineno="61"><highlight class="normal"><sp/><sp/><ref refid="include_2sys_2types_8h_1a0238af00180b6d9278fa1c6aa790fdf4" kindref="member">uint32_t</ref><sp/>memAddr<sp/>=<sp/>cr2;</highlight></codeline>
<codeline lineno="62"><highlight class="normal"></highlight></codeline>
<codeline lineno="63"><highlight class="normal"></highlight><highlight class="comment">//MrOlsen<sp/>2017-12-15<sp/>-</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="64"><highlight class="normal"><sp/><sp/><ref refid="kprintf_8h_1a20b56810edb62a6fe59917015c30848f" kindref="member">kprintf</ref>(</highlight><highlight class="stringliteral">"CR2:<sp/>[0x%X],<sp/>EIP:<sp/>0x%X,<sp/>ERR:<sp/>0x%X,<sp/>PID:<sp/>%i\n"</highlight><highlight class="normal">,<sp/>cr2,<sp/>frame-><ref refid="structtrapframe_1a5d510dabbcd29cf981b17a4c08234c3b" kindref="member">tf_eip</ref>,<sp/>frame-><ref refid="structtrapframe_1a9e4fa072056d86cd7516e9445822ef34" kindref="member">tf_err</ref>,<sp/><ref refid="armv6_2sched_8c_1a54397bfe18d5da4d50ff03b15f540858" kindref="member">_current</ref>-><ref refid="structtaskStruct_1a30966587a60db6b40c8be6c387e11d81" kindref="member">id</ref>);</highlight></codeline>
<codeline lineno="65"><highlight class="normal"></highlight></codeline>
<codeline lineno="66"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">/*<sp/>Try<sp/>to<sp/>aquire<sp/>lock<sp/>otherwise<sp/>spin<sp/>till<sp/>we<sp/>do<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="67"><highlight class="normal"><sp/><sp/><ref refid="armv6_2spinlock_8c_1a71f03d2ba55111c715b6068254847a53" kindref="member">spinLock</ref>(&pageFaultSpinLock);</highlight></codeline>
<codeline lineno="68"><highlight class="normal"></highlight></codeline>
<codeline lineno="69"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">/*<sp/>Set<sp/>page<sp/>dir<sp/>pointer<sp/>to<sp/>the<sp/>address<sp/>of<sp/>the<sp/>visable<sp/>page<sp/>directory<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="70"><highlight class="normal"><sp/><sp/>pageDir<sp/>=<sp/>(<ref refid="include_2sys_2types_8h_1a0238af00180b6d9278fa1c6aa790fdf4" kindref="member">uint32_t</ref><sp/>*)<sp/><ref refid="paging_8h_1a1b0f37794d3da1a86f1df77e503ed98f" kindref="member">PD_BASE_ADDR</ref>;</highlight></codeline>
<codeline lineno="71"><highlight class="normal"></highlight></codeline>
<codeline lineno="72"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">/*<sp/>UBU<sp/>-<sp/>This<sp/>is<sp/>a<sp/>temp<sp/>panic<sp/>for<sp/>0x0<sp/>read<sp/>write<sp/>later<sp/>on<sp/>I<sp/>will<sp/>handle<sp/>this<sp/>differently<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="73"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(memAddr<sp/>==<sp/>0x0)<sp/>{</highlight></codeline>
<codeline lineno="74"><highlight class="normal"><sp/><sp/><sp/><sp/><ref refid="kprintf_8h_1a20b56810edb62a6fe59917015c30848f" kindref="member">kprintf</ref>(</highlight><highlight class="stringliteral">"Segfault<sp/>At<sp/>Address:<sp/>[0x%X],<sp/>ESP:<sp/>[0x%X],<sp/>PID:<sp/>[%i],<sp/>EIP:<sp/>[0x%X]\n"</highlight><highlight class="normal">,<sp/>memAddr,<sp/>esp,<sp/><ref refid="armv6_2sched_8c_1a54397bfe18d5da4d50ff03b15f540858" kindref="member">_current</ref>-><ref refid="structtaskStruct_1a30966587a60db6b40c8be6c387e11d81" kindref="member">id</ref>,<sp/>eip);</highlight></codeline>
<codeline lineno="75"><highlight class="normal"><sp/><sp/><sp/><sp/><ref refid="armv6_2kpanic_8c_1adb9a182aa071791a306163d50d653deb" kindref="member">kpanic</ref>(</highlight><highlight class="stringliteral">"Error<sp/>We<sp/>Wrote<sp/>To<sp/>0x0\n"</highlight><highlight class="normal">);</highlight></codeline>
<codeline lineno="76"><highlight class="normal"><sp/><sp/>}</highlight></codeline>
<codeline lineno="77"><highlight class="normal"></highlight></codeline>
<codeline lineno="78"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">/*<sp/>Calculate<sp/>The<sp/>Page<sp/>Directory<sp/>Index<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="79"><highlight class="normal"><sp/><sp/>pageDirectoryIndex<sp/>=<sp/><ref refid="paging_8h_1ac96f9536624cb5d2e7634f37fa919c4c" kindref="member">PD_INDEX</ref>(memAddr);</highlight></codeline>
<codeline lineno="80"><highlight class="normal"></highlight></codeline>
<codeline lineno="81"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">/*<sp/>Calculate<sp/>The<sp/>Page<sp/>Table<sp/>Index<sp/><sp/><sp/><sp/><sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="82"><highlight class="normal"><sp/><sp/>pageTableIndex<sp/>=<sp/><ref refid="paging_8h_1a2c6e29890bb0209384b6d012db48e2f7" kindref="member">PT_INDEX</ref>(memAddr);</highlight></codeline>
<codeline lineno="83"><highlight class="normal"></highlight></codeline>
<codeline lineno="84"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">/*<sp/>UBU<sp/>-<sp/>This<sp/>is<sp/>a<sp/>temporary<sp/>routine<sp/>for<sp/>handling<sp/>access<sp/>to<sp/>a<sp/>page<sp/>of<sp/>a<sp/>non<sp/>existant<sp/>page<sp/>table<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="85"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(pageDir[pageDirectoryIndex]<sp/>==<sp/>0x0)<sp/>{</highlight></codeline>
<codeline lineno="86"><highlight class="normal"><sp/><sp/><sp/><sp/><ref refid="kprintf_8h_1a20b56810edb62a6fe59917015c30848f" kindref="member">kprintf</ref>(</highlight><highlight class="stringliteral">"Segfault<sp/>At<sp/>Address:<sp/>[0x%X][0x%X][%i][0x%X],<sp/>Not<sp/>A<sp/>Valid<sp/>Page<sp/>Table\n"</highlight><highlight class="normal">,<sp/>memAddr,<sp/>esp,<sp/><ref refid="armv6_2sched_8c_1a54397bfe18d5da4d50ff03b15f540858" kindref="member">_current</ref>-><ref refid="structtaskStruct_1a30966587a60db6b40c8be6c387e11d81" kindref="member">id</ref>,<sp/>eip);</highlight></codeline>
<codeline lineno="87"><highlight class="normal"><sp/><sp/><sp/><sp/><ref refid="armv6_2spinlock_8c_1ae29ab191c93f9ead066cb462dd2e7247" kindref="member">spinUnlock</ref>(&pageFaultSpinLock);</highlight></codeline>
<codeline lineno="88"><highlight class="normal"><sp/><sp/><sp/><sp/><ref refid="endtask_8h_1a152c1859ada097cc21071f471bfa2e67" kindref="member">endTask</ref>(<ref refid="armv6_2sched_8c_1a54397bfe18d5da4d50ff03b15f540858" kindref="member">_current</ref>-><ref refid="structtaskStruct_1a30966587a60db6b40c8be6c387e11d81" kindref="member">id</ref>);</highlight></codeline>
<codeline lineno="89"><highlight class="normal"><sp/><sp/>}</highlight></codeline>
<codeline lineno="90"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">else</highlight><highlight class="normal"><sp/>{</highlight></codeline>
<codeline lineno="91"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">/*<sp/>Set<sp/>pageTable<sp/>To<sp/>Point<sp/>To<sp/>Virtual<sp/>Address<sp/>Of<sp/>Page<sp/>Table<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="92"><highlight class="normal"><sp/><sp/><sp/><sp/>pageTable<sp/>=<sp/>(<ref refid="include_2sys_2types_8h_1a0238af00180b6d9278fa1c6aa790fdf4" kindref="member">uint32_t</ref><sp/>*)<sp/>(<ref refid="paging_8h_1a8d42a9a09d9dea53cab3044f51482acc" kindref="member">PT_BASE_ADDR</ref><sp/>+<sp/>(<ref refid="paging_8h_1a7d467c1d283fdfa1f2081ba1e0d01b6e" kindref="member">PAGE_SIZE</ref><sp/>*<sp/>pageDirectoryIndex));</highlight></codeline>
<codeline lineno="93"><highlight class="normal"></highlight></codeline>
<codeline lineno="94"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">/*<sp/>Test<sp/>if<sp/>this<sp/>is<sp/>a<sp/>COW<sp/>on<sp/>page<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="95"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(((<ref refid="include_2sys_2types_8h_1a0238af00180b6d9278fa1c6aa790fdf4" kindref="member">uint32_t</ref>)<sp/>pageTable[pageTableIndex]<sp/>&<sp/><ref refid="paging_8h_1a57d743cb60fe478f6720c42315e7e813" kindref="member">PAGE_COW</ref>)<sp/>==<sp/><ref refid="paging_8h_1a57d743cb60fe478f6720c42315e7e813" kindref="member">PAGE_COW</ref>)<sp/>{</highlight></codeline>
<codeline lineno="96"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="comment">/*<sp/>Set<sp/>Src<sp/>To<sp/>Base<sp/>Address<sp/>Of<sp/>Page<sp/>To<sp/>Copy<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="97"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/>src<sp/>=<sp/>(<ref refid="objgfx30_8h_1ada085051a6d9a8e00a2cb256d1af14ba" kindref="member">uInt32</ref><sp/>*)<sp/>(memAddr<sp/>&<sp/>0xFFFFF000);</highlight></codeline>
<codeline lineno="98"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="comment">/*<sp/>Allocate<sp/>A<sp/>Free<sp/>Page<sp/>For<sp/>Destination<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="99"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="comment">/*<sp/>USE<sp/>vmInfo<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="100"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/>dst<sp/>=<sp/>(<ref refid="objgfx30_8h_1ada085051a6d9a8e00a2cb256d1af14ba" kindref="member">uInt32</ref><sp/>*)<sp/><ref refid="paging_8h_1ac5fa0688dfb2237da626a34ad6b36a92" kindref="member">vmm_getFreeVirtualPage</ref>(<ref refid="armv6_2sched_8c_1a54397bfe18d5da4d50ff03b15f540858" kindref="member">_current</ref>-><ref refid="structtaskStruct_1a30966587a60db6b40c8be6c387e11d81" kindref="member">id</ref>,<sp/>1,<sp/>0x1);</highlight></codeline>
<codeline lineno="101"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="comment">/*<sp/>Copy<sp/>Memory<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="102"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">for</highlight><highlight class="normal"><sp/>(i<sp/>=<sp/>0;<sp/>i<sp/><<sp/><ref refid="paging_8h_1a91bd4c1c49996222f571b2f53ca00dc4" kindref="member">PD_ENTRIES</ref>;<sp/>i++)<sp/>{</highlight></codeline>
<codeline lineno="103"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>dst[i]<sp/>=<sp/>src[i];</highlight></codeline>
<codeline lineno="104"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="105"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="comment">/*<sp/>Adjust<sp/>The<sp/>COW<sp/>Counter<sp/>For<sp/>Physical<sp/>Page<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="106"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="vmm_8h_1aafef303dc8f2c6ed7bcf171819579166" kindref="member">adjustCowCounter</ref>(((<ref refid="objgfx30_8h_1ada085051a6d9a8e00a2cb256d1af14ba" kindref="member">uInt32</ref>)<sp/>pageTable[pageTableIndex]<sp/>&<sp/>0xFFFFF000),<sp/>-1);</highlight></codeline>
<codeline lineno="107"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="comment">/*<sp/>Remap<sp/>In<sp/>New<sp/>Page<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="108"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/>pageTable[pageTableIndex]<sp/>=<sp/>(<ref refid="objgfx30_8h_1ada085051a6d9a8e00a2cb256d1af14ba" kindref="member">uInt32</ref>)<sp/>(<ref refid="paging_8h_1a5522eccf81d4630537620209651be16e" kindref="member">vmm_getPhysicalAddr</ref>((<ref refid="objgfx30_8h_1ada085051a6d9a8e00a2cb256d1af14ba" kindref="member">uInt32</ref>)<sp/>dst)<sp/>|<sp/>(memAddr<sp/>&<sp/>0xFFF));</highlight></codeline>
<codeline lineno="109"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="comment">/*<sp/>Unlink<sp/>From<sp/>Memory<sp/>Map<sp/>Allocated<sp/>Page<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="110"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="vmm_8h_1a457446966aafafd939af6603f68516b1" kindref="member">vmm_unmapPage</ref>((<ref refid="objgfx30_8h_1ada085051a6d9a8e00a2cb256d1af14ba" kindref="member">uInt32</ref>)<sp/>dst,<sp/>1);</highlight></codeline>
<codeline lineno="111"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="112"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">else</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(pageTable[pageTableIndex]<sp/>!=<sp/>0x0)<sp/>{</highlight></codeline>
<codeline lineno="113"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="kprintf_8h_1a20b56810edb62a6fe59917015c30848f" kindref="member">kprintf</ref>(</highlight><highlight class="stringliteral">"Security<sp/>failed<sp/>pagetable<sp/>not<sp/>user<sp/>permission\n"</highlight><highlight class="normal">);</highlight></codeline>
<codeline lineno="114"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="kprintf_8h_1a20b56810edb62a6fe59917015c30848f" kindref="member">kprintf</ref>(</highlight><highlight class="stringliteral">"pageDir:<sp/>[0x%X]\n"</highlight><highlight class="normal">,<sp/>pageDir[pageDirectoryIndex]);</highlight></codeline>
<codeline lineno="115"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="kprintf_8h_1a20b56810edb62a6fe59917015c30848f" kindref="member">kprintf</ref>(</highlight><highlight class="stringliteral">"pageTable:<sp/>[0x%X:0x%X:0x%X:0x%X]\n"</highlight><highlight class="normal">,<sp/>pageTable[pageTableIndex],<sp/>pageTableIndex,<sp/>pageDirectoryIndex,<sp/>eip);</highlight></codeline>
<codeline lineno="116"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="kprintf_8h_1a20b56810edb62a6fe59917015c30848f" kindref="member">kprintf</ref>(</highlight><highlight class="stringliteral">"Segfault<sp/>At<sp/>Address:<sp/>[0x%X][0x%X][%i][0x%X]<sp/>Non<sp/>Mapped.\n"</highlight><highlight class="normal">,<sp/>memAddr,<sp/>esp,<sp/><ref refid="armv6_2sched_8c_1a54397bfe18d5da4d50ff03b15f540858" kindref="member">_current</ref>-><ref refid="structtaskStruct_1a30966587a60db6b40c8be6c387e11d81" kindref="member">id</ref>,<sp/>eip);</highlight></codeline>
<codeline lineno="117"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="armv6_2kpanic_8c_1adb9a182aa071791a306163d50d653deb" kindref="member">kpanic</ref>(</highlight><highlight class="stringliteral">"SIT<sp/>HERE<sp/>FOR<sp/>NOW"</highlight><highlight class="normal">);</highlight></codeline>
<codeline lineno="118"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="trap_8c_1a62b4617f9a2800b1e9baf8d6f93835bd" kindref="member">die_if_kernel</ref>(</highlight><highlight class="stringliteral">"SEGFAULT"</highlight><highlight class="normal">,<sp/>frame,<sp/>0xC);</highlight></codeline>
<codeline lineno="119"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="armv6_2spinlock_8c_1ae29ab191c93f9ead066cb462dd2e7247" kindref="member">spinUnlock</ref>(&pageFaultSpinLock);</highlight></codeline>
<codeline lineno="120"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="endtask_8h_1a152c1859ada097cc21071f471bfa2e67" kindref="member">endTask</ref>(<ref refid="armv6_2sched_8c_1a54397bfe18d5da4d50ff03b15f540858" kindref="member">_current</ref>-><ref refid="structtaskStruct_1a30966587a60db6b40c8be6c387e11d81" kindref="member">id</ref>);</highlight></codeline>
<codeline lineno="121"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="122"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">else</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(memAddr<sp/><<sp/>(<ref refid="armv6_2sched_8c_1a54397bfe18d5da4d50ff03b15f540858" kindref="member">_current</ref>-><ref refid="structtaskStruct_1a481c2e7084fec272e616d3fb984036e2" kindref="member">td</ref>.<ref refid="structthread_1ac5ce95b5be4422e5f5a61f081547d425" kindref="member">vm_dsize</ref><sp/>+<sp/><ref refid="armv6_2sched_8c_1a54397bfe18d5da4d50ff03b15f540858" kindref="member">_current</ref>-><ref refid="structtaskStruct_1a481c2e7084fec272e616d3fb984036e2" kindref="member">td</ref>.<ref refid="structthread_1ae4165d082b98f27dab6bfeeefb76e060" kindref="member">vm_daddr</ref>))<sp/>{</highlight></codeline>
<codeline lineno="123"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="kprintf_8h_1a20b56810edb62a6fe59917015c30848f" kindref="member">kprintf</ref>(</highlight><highlight class="stringliteral">"THIS<sp/>IS<sp/>BAD"</highlight><highlight class="normal">);</highlight></codeline>
<codeline lineno="124"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="trap_8c_1a62b4617f9a2800b1e9baf8d6f93835bd" kindref="member">die_if_kernel</ref>(</highlight><highlight class="stringliteral">"SEGFAULT"</highlight><highlight class="normal">,<sp/>frame,<sp/>0xC);</highlight></codeline>
<codeline lineno="125"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/>pageTable[pageTableIndex]<sp/>=<sp/>(<ref refid="objgfx30_8h_1ada085051a6d9a8e00a2cb256d1af14ba" kindref="member">uInt32</ref>)<sp/><ref refid="vmm_8h_1ab8e4e189a7b1df2a03072ce5b75c89fe" kindref="member">vmm_findFreePage</ref>(<ref refid="armv6_2sched_8c_1a54397bfe18d5da4d50ff03b15f540858" kindref="member">_current</ref>-><ref refid="structtaskStruct_1a30966587a60db6b40c8be6c387e11d81" kindref="member">id</ref>)<sp/>|<sp/><ref refid="paging_8h_1af0fff7a38cd2c7a32d580787423b94ea" kindref="member">PAGE_DEFAULT</ref>;</highlight></codeline>
<codeline lineno="126"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="127"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">else</highlight><highlight class="normal"><sp/>{</highlight></codeline>
<codeline lineno="128"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="armv6_2spinlock_8c_1ae29ab191c93f9ead066cb462dd2e7247" kindref="member">spinUnlock</ref>(&pageFaultSpinLock);</highlight></codeline>
<codeline lineno="129"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="comment">/*<sp/>Need<sp/>To<sp/>Create<sp/>A<sp/>Routine<sp/>For<sp/>Attempting<sp/>To<sp/>Access<sp/>Non<sp/>Mapped<sp/>Memory<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="130"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="kprintf_8h_1a20b56810edb62a6fe59917015c30848f" kindref="member">kprintf</ref>(</highlight><highlight class="stringliteral">"pageDir:<sp/>[0x%X]\n"</highlight><highlight class="normal">,<sp/>pageDir[pageDirectoryIndex]);</highlight></codeline>
<codeline lineno="131"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="kprintf_8h_1a20b56810edb62a6fe59917015c30848f" kindref="member">kprintf</ref>(</highlight><highlight class="stringliteral">"pageTable:<sp/>[0x%X:0x%X:0x%X:0x%X]\n"</highlight><highlight class="normal">,<sp/>pageTable[pageTableIndex],<sp/>pageTableIndex,<sp/>pageDirectoryIndex,<sp/>eip);</highlight></codeline>
<codeline lineno="132"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="kprintf_8h_1a20b56810edb62a6fe59917015c30848f" kindref="member">kprintf</ref>(</highlight><highlight class="stringliteral">"Segfault<sp/>At<sp/>Address:<sp/>[0x%X][0x%X][%i][0x%X]<sp/>Non<sp/>Mapped!\n"</highlight><highlight class="normal">,<sp/>memAddr,<sp/>esp,<sp/><ref refid="armv6_2sched_8c_1a54397bfe18d5da4d50ff03b15f540858" kindref="member">_current</ref>-><ref refid="structtaskStruct_1a30966587a60db6b40c8be6c387e11d81" kindref="member">id</ref>,<sp/>eip);</highlight></codeline>
<codeline lineno="133"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="trap_8c_1a62b4617f9a2800b1e9baf8d6f93835bd" kindref="member">die_if_kernel</ref>(</highlight><highlight class="stringliteral">"SEGFAULT"</highlight><highlight class="normal">,<sp/>frame,<sp/>0xC);</highlight></codeline>
<codeline lineno="134"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="armv6_2kpanic_8c_1adb9a182aa071791a306163d50d653deb" kindref="member">kpanic</ref>(</highlight><highlight class="stringliteral">"SIT<sp/>HERE<sp/>FOR<sp/>NOW"</highlight><highlight class="normal">);</highlight></codeline>
<codeline lineno="135"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="kprintf_8h_1a20b56810edb62a6fe59917015c30848f" kindref="member">kprintf</ref>(</highlight><highlight class="stringliteral">"Out<sp/>Of<sp/>Stack<sp/>Space:<sp/>[0x%X]\n"</highlight><highlight class="normal">,<sp/>memAddr<sp/>&<sp/>0xFF0000);</highlight></codeline>
<codeline lineno="136"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="endtask_8h_1a152c1859ada097cc21071f471bfa2e67" kindref="member">endTask</ref>(<ref refid="armv6_2sched_8c_1a54397bfe18d5da4d50ff03b15f540858" kindref="member">_current</ref>-><ref refid="structtaskStruct_1a30966587a60db6b40c8be6c387e11d81" kindref="member">id</ref>);</highlight></codeline>
<codeline lineno="137"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="138"><highlight class="normal"><sp/><sp/>}</highlight></codeline>
<codeline lineno="139"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">asm</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">volatile</highlight><highlight class="normal">(</highlight></codeline>
<codeline lineno="140"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="stringliteral">"movl<sp/>%cr3,%eax\n"</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="141"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="stringliteral">"movl<sp/>%eax,%cr3\n"</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="142"><highlight class="normal"><sp/><sp/>);</highlight></codeline>
<codeline lineno="143"><highlight class="normal"></highlight></codeline>
<codeline lineno="144"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">/*<sp/>Release<sp/>the<sp/>spin<sp/>lock<sp/>*/</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="145"><highlight class="normal"><sp/><sp/><ref refid="armv6_2spinlock_8c_1ae29ab191c93f9ead066cb462dd2e7247" kindref="member">spinUnlock</ref>(&pageFaultSpinLock);</highlight></codeline>
<codeline lineno="146"><highlight class="normal"><sp/><sp/><ref refid="kprintf_8h_1a20b56810edb62a6fe59917015c30848f" kindref="member">kprintf</ref>(</highlight><highlight class="stringliteral">"CR2-RET"</highlight><highlight class="normal">);</highlight></codeline>
<codeline lineno="147"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal">;</highlight></codeline>
<codeline lineno="148"><highlight class="normal">}</highlight></codeline>
</programlisting>
<location file="C:/Dev/git/UbixOS/sys/vmm/pagefault.c"/>
</compounddef>
</doxygen>
