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UbixOS / doc / xml / i386_2sys__call_8S.xml
Christopher W. Olsen on 29 Jan 2020 10 KB Doxygen Documentation - I cannot speak for how true this documentation
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<?xml version='1.0' encoding='UTF-8' standalone='no'?>
<doxygen xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="compound.xsd" version="1.8.16">
  <compounddef id="i386_2sys__call_8S" kind="file" language="C++">
    <compoundname>sys_call.S</compoundname>
    <briefdescription>
    </briefdescription>
    <detaileddescription>
    </detaileddescription>
    <programlisting>
<codeline><highlight class="normal">/*-</highlight></codeline>
<codeline><highlight class="normal"><sp/>*<sp/>Copyright<sp/>(c)<sp/>2002-2018<sp/>The<sp/>UbixOS<sp/>Project.</highlight></codeline>
<codeline><highlight class="normal"><sp/>*<sp/>All<sp/>rights<sp/>reserved.</highlight></codeline>
<codeline><highlight class="normal"><sp/>*</highlight></codeline>
<codeline><highlight class="normal"><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><highlight class="normal"><sp/>*</highlight></codeline>
<codeline><highlight class="normal"><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><highlight class="normal"><sp/>*<sp/>provided<sp/>that<sp/>the<sp/>following<sp/>conditions<sp/>are<sp/>met:</highlight></codeline>
<codeline><highlight class="normal"><sp/>*</highlight></codeline>
<codeline><highlight class="normal"><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><highlight class="normal"><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><highlight class="normal"><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><highlight class="normal"><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><highlight class="normal"><sp/>*<sp/><sp/><sp/><sp/>other<sp/>materials<sp/>provided<sp/>with<sp/>the<sp/>distribution.</highlight></codeline>
<codeline><highlight class="normal"><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><highlight class="normal"><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><highlight class="normal"><sp/>*<sp/><sp/><sp/><sp/>permission.</highlight></codeline>
<codeline><highlight class="normal"><sp/>*</highlight></codeline>
<codeline><highlight class="normal"><sp/>*<sp/>THIS<sp/>SOFTWARE<sp/>IS<sp/>PROVIDED<sp/>BY<sp/>THE<sp/>AUTHOR<sp/>AND<sp/>CONTRIBUTORS<sp/>&quot;AS<sp/>IS&quot;<sp/>AND<sp/>ANY<sp/>EXPRESS<sp/>OR<sp/>IMPLIED</highlight></codeline>
<codeline><highlight class="normal"><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><highlight class="normal"><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><highlight class="normal"><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><highlight class="normal"><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><highlight class="normal"><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><highlight class="normal"><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><highlight class="normal"><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><highlight class="normal"><sp/>*/</highlight></codeline>
<codeline></codeline>
<codeline><highlight class="normal">.globl<sp/>_sys_call</highlight></codeline>
<codeline><highlight class="normal">.text</highlight></codeline>
<codeline><highlight class="normal">.code32</highlight></codeline>
<codeline></codeline>
<codeline><highlight class="normal">_B4:</highlight></codeline>
<codeline><highlight class="normal">_B3:</highlight></codeline>
<codeline><highlight class="normal">nop</highlight></codeline>
<codeline></codeline>
<codeline><highlight class="normal">_ast:</highlight></codeline>
<codeline></codeline>
<codeline><highlight class="normal">_astRet:</highlight></codeline>
<codeline></codeline>
<codeline><highlight class="normal">_sysCall_MrOlsen:</highlight></codeline>
<codeline><highlight class="normal">//MrOlsen<sp/>2018-01-14<sp/>push<sp/>$0x2</highlight></codeline>
<codeline><highlight class="normal">//MrOlsen<sp/>2018-01-14<sp/>sub<sp/>$0x4,%esp</highlight></codeline>
<codeline><highlight class="normal">pusha</highlight></codeline>
<codeline><highlight class="normal">push<sp/>%ds</highlight></codeline>
<codeline><highlight class="normal">push<sp/>%es</highlight></codeline>
<codeline><highlight class="normal">push<sp/>%fs</highlight></codeline>
<codeline><highlight class="normal">push<sp/>%gs</highlight></codeline>
<codeline><highlight class="normal">mov<sp/>$0x10,%eax</highlight></codeline>
<codeline><highlight class="normal">mov<sp/>%eax,%ds</highlight></codeline>
<codeline><highlight class="normal">mov<sp/>%eax,%es</highlight></codeline>
<codeline><highlight class="normal">mov<sp/>%eax,%fs</highlight></codeline>
<codeline><highlight class="normal">cld</highlight></codeline>
<codeline><highlight class="normal">push<sp/>%esp</highlight></codeline>
<codeline><highlight class="normal">call<sp/>sys_call</highlight></codeline>
<codeline><highlight class="normal">add<sp/>$0x4,%esp</highlight></codeline>
<codeline><highlight class="normal">cmpb<sp/>$0x13,0x38(%esp)</highlight></codeline>
<codeline><highlight class="normal">je<sp/>_B4</highlight></codeline>
<codeline><highlight class="normal">testl<sp/>$0x2000,0x3c(%esp)<sp/>/*<sp/>Test<sp/>If<sp/>VM<sp/>*/</highlight></codeline>
<codeline><highlight class="normal">jz<sp/>_notVM</highlight></codeline>
<codeline><highlight class="normal">jmp<sp/>_isVM</highlight></codeline>
<codeline><highlight class="normal">_notVM:</highlight></codeline>
<codeline><highlight class="normal">testb<sp/>$0x3,0x38(%esp)<sp/>/*<sp/>See<sp/>If<sp/>We&apos;re<sp/>In<sp/>User<sp/>CS<sp/>(GDT<sp/>Entry<sp/>5)<sp/>*/</highlight></codeline>
<codeline><highlight class="normal">jz<sp/>_popFS</highlight></codeline>
<codeline><highlight class="normal">jmp<sp/>_popFS<sp/>/*<sp/>TMP<sp/>BECAUSE<sp/>ABOVE<sp/>ISN&apos;T<sp/>RIGHT<sp/>*/</highlight></codeline>
<codeline><highlight class="normal">cli</highlight></codeline>
<codeline><highlight class="normal">mov<sp/>%fs:0x0,%eax</highlight></codeline>
<codeline><highlight class="normal">testl<sp/>$0x10800,0x80(%eax)<sp/>/*<sp/>Document<sp/>This<sp/>*/</highlight></codeline>
<codeline><highlight class="normal">je<sp/>_popFS</highlight></codeline>
<codeline><highlight class="normal">sti</highlight></codeline>
<codeline><highlight class="normal">push<sp/>%esp</highlight></codeline>
<codeline><highlight class="normal">call<sp/>_ast</highlight></codeline>
<codeline><highlight class="normal">add<sp/>$0x4,%esp</highlight></codeline>
<codeline><highlight class="normal">jmp<sp/>_astRet</highlight></codeline>
<codeline><highlight class="normal">_isVM:</highlight></codeline>
<codeline><highlight class="normal">hlt</highlight></codeline>
<codeline></codeline>
<codeline><highlight class="normal">_popFS:</highlight></codeline>
<codeline><highlight class="normal">pop<sp/>%gs</highlight></codeline>
<codeline><highlight class="normal">pop<sp/>%fs</highlight></codeline>
<codeline><highlight class="normal">pop<sp/>%es</highlight></codeline>
<codeline><highlight class="normal">pop<sp/>%ds</highlight></codeline>
<codeline><highlight class="normal">popa</highlight></codeline>
<codeline><highlight class="normal">//MrOlsen<sp/>2018-01-14<sp/>add<sp/>$0x8,%esp</highlight></codeline>
<codeline><highlight class="normal">iret</highlight></codeline>
<codeline></codeline>
<codeline><highlight class="normal">_sys_call:</highlight></codeline>
<codeline><highlight class="normal">push<sp/>$0x0</highlight></codeline>
<codeline><highlight class="normal">push<sp/>$0x80</highlight></codeline>
<codeline><highlight class="normal">pusha</highlight></codeline>
<codeline><highlight class="normal">push<sp/>%ds</highlight></codeline>
<codeline><highlight class="normal">push<sp/>%es</highlight></codeline>
<codeline><highlight class="normal">push<sp/>%fs</highlight></codeline>
<codeline><highlight class="normal">push<sp/>%gs</highlight></codeline>
<codeline><highlight class="normal">mov<sp/>$0x10,%eax</highlight></codeline>
<codeline><highlight class="normal">mov<sp/>%eax,<sp/>%ds</highlight></codeline>
<codeline><highlight class="normal">mov<sp/>%eax,<sp/>%es</highlight></codeline>
<codeline><highlight class="normal">mov<sp/>%eax,<sp/>%fs</highlight></codeline>
<codeline><highlight class="normal">cld</highlight></codeline>
<codeline><highlight class="normal">push<sp/>%esp</highlight></codeline>
<codeline><highlight class="normal">call<sp/>sys_call</highlight></codeline>
<codeline><highlight class="normal">add<sp/>$0x4,%esp<sp/>/*<sp/>Remove<sp/>Stack<sp/>Pointer<sp/>From<sp/>Stack<sp/>*/</highlight></codeline>
<codeline><highlight class="normal">pop<sp/>%gs</highlight></codeline>
<codeline><highlight class="normal">pop<sp/>%fs</highlight></codeline>
<codeline><highlight class="normal">pop<sp/>%es</highlight></codeline>
<codeline><highlight class="normal">pop<sp/>%ds</highlight></codeline>
<codeline><highlight class="normal">popa</highlight></codeline>
<codeline><highlight class="normal">add<sp/>$0x8,%esp<sp/>//Back<sp/>Out<sp/>Error<sp/>Code<sp/>&amp;<sp/>trap_no</highlight></codeline>
<codeline><highlight class="normal">iret</highlight></codeline>
    </programlisting>
    <location file="C:/Dev/git/UbixOS/sys/arch/i386/sys_call.S"/>
  </compounddef>
</doxygen>