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<!DOCTYPE HTML>
< html >
< head >
< meta http-equiv = "Content-Type" content = "text/html;charset=US-ASCII" >
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< meta name = "generator" content = "ZealOS V0.08" >
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< style type = "text/css" >
body {background-color:#000000;}
.cF0{color:#ffffff;background-color:#000000;}
.cF1{color:#3465a4;background-color:#000000;}
.cF2{color:#4e9a06;background-color:#000000;}
.cF3{color:#06989a;background-color:#000000;}
.cF4{color:#a24444;background-color:#000000;}
.cF5{color:#75507b;background-color:#000000;}
.cF6{color:#ce982f;background-color:#000000;}
.cF7{color:#bcc0b9;background-color:#000000;}
.cF8{color:#555753;background-color:#000000;}
.cF9{color:#729fcf;background-color:#000000;}
.cFA{color:#82bc49;background-color:#000000;}
.cFB{color:#34e2e2;background-color:#000000;}
.cFC{color:#ac3535;background-color:#000000;}
.cFD{color:#ad7fa8;background-color:#000000;}
.cFE{color:#fce94f;background-color:#000000;}
.cFF{color:#000000;background-color:#000000;}
< / style >
< / head >
< body >
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< pre style = "font-family:monospace;font-size:12pt" >
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< a name = "l1" > < / a > < span class = cF1 > asm< / span > < span class = cF0 > {< / span > < span class = cF2 > /* See < / span > < a href = "https://tomawezome.github.io/ZealOS/Doc/Boot.DD.html#l1" > < span class = cF4 > ::/Doc/Boot.DD< / span > < / a > < span class = cF2 > .< / span > < span class = cF0 >
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< a name = "l2" > < / a > < / span > < span class = cF2 > ZealOS starts in real, calls some BIOS routines, switches to 32 bit, and 64 bit mode and continues in < / span > < a href = "https://tomawezome.github.io/ZealOS/Doc/CosmiC.DD.html#l1" > < span class = cF4 > CosmiC< / span > < / a > < span class = cF2 > at < / span > < a href = "https://tomawezome.github.io/ZealOS/Kernel/KMain.CC.html#l143" > < span class = cF4 > KMain< / span > < / a > < span class = cF2 > ().< / span > < span class = cF0 >
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< a name = "l3" > < / a >
< a name = "l4" > < / a > < / span > < span class = cF2 > The boot loader jumps here in real-mode (16-bit).< / span > < span class = cF0 >
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< a name = "l5" > < / a > < / span > < span class = cF2 > It actually jumps to the < / span > < a href = "https://tomawezome.github.io/ZealOS/Kernel/KernelA.HH.html#l452" > < span class = cF4 > CBinFile< / span > < / a > < span class = cF2 > header which is placed just before this by < / span > < a href = "https://tomawezome.github.io/ZealOS/Compiler/CMain.CC.html#l628" > < span class = cF4 > the compiler< / span > < / a > < span class = cF2 > .< / span > < span class = cF0 >
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< a name = "l6" > < / a > < / span > < span class = cF2 > The header begins with a short jmp to the start of this file's code which begins with the following small jump past some data.< / span > < span class = cF0 >
< a name = "l7" > < / a >
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< a name = "l8" > < / a > < / span > < span class = cF2 > This file is first in the Kernel image because it is #included first. < / span > < a href = "https://tomawezome.github.io/ZealOS/Kernel/Kernel.PRJ.html#l14" > < span class = cF4 > Kernel.PRJ< / span > < / a > < span class = cF0 >
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< a name = "l9" > < / a > < / span > < span class = cF2 > */< / span > < span class = cF0 >
< a name = "l10" > < / a > < / span > < span class = cF1 > USE16< / span > < span class = cF0 >
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< a name = "l11" > < / a > < / span > < span class = cFD > SYS_KERNEL< / span > < span class = cF0 > :: < / span > < span class = cF2 > //This must match < / span > < a href = "https://tomawezome.github.io/ZealOS/Kernel/KernelA.HH.html#l548" > < span class = cF4 > CKernel< / span > < / a > < span class = cF2 > .< / span > < span class = cF0 >
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< a name = "l12" > < / a > < / span > < span class = cF1 > JMP< / span > < span class = cF0 > < / span > < span class = cF9 > I16< / span > < span class = cF0 > < / span > < span class = cFD > CORE0_16BIT_INIT< / span > < span class = cF0 >
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< a name = "l13" > < / a >
< a name = "l14" > < / a > < / span > < span class = cF2 > //************************************< / span > < span class = cF0 >
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< a name = "l15" > < / a > < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > ASM Global vars required for 16-bit start-up< / span > < span class = cF0 >
< a name = "l16" > < / a > < / span > < span class = cF1 > ALIGN< / span > < span class = cF0 > < / span > < span class = cFE > 4< / span > < span class = cF0 > , < / span > < span class = cF3 > OC_NOP< / span > < span class = cF0 >
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< a name = "l17" > < / a >
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< a name = "l18" > < / a > < / span > < span class = cFD > SYS_BOOT_SRC< / span > < span class = cF0 > :: < / span > < span class = cF1 > DU32< / span > < span class = cF0 > < / span > < span class = cF3 > BOOT_SRC_NULL< / span > < span class = cF0 > ;
< a name = "l19" > < / a > < / span > < span class = cFD > SYS_BOOT_BLK< / span > < span class = cF0 > :: < / span > < span class = cF1 > DU32< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l20" > < / a > < / span > < span class = cFD > SYS_BOOT_PATCH_TABLE_BASE< / span > < span class = cF0 > :: < / span > < span class = cF1 > DU32< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l21" > < / a > < / span > < span class = cFD > SYS_RUN_LEVEL< / span > < span class = cF0 > :: < / span > < span class = cF1 > DU32< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
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< a name = "l22" > < / a >
< a name = "l23" > < / a > #< / span > < span class = cF1 > exe< / span > < span class = cF0 >
< a name = "l24" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
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< a name = "l25" > < / a > < / span > < span class = cF5 > StreamPrint< / span > < span class = cF0 > (< / span > < span class = cF6 > " SYS_COMPILE_TIME:: DU64 0x%X;" < / span > < span class = cF0 > , < / span > < span class = cF5 > Now< / span > < span class = cF0 > ); < / span > < span class = cF2 > //See < / span > < a href = "https://tomawezome.github.io/ZealOS/Kernel/BlkDev/DiskAHCI.CC.html#l783" > < span class = cF4 > AHCIBootDVDProbeAll< / span > < / a > < span class = cF0 >
< a name = "l26" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 > ;
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< a name = "l27" > < / a >
< a name = "l28" > < / a > #< / span > < span class = cF1 > assert< / span > < span class = cF0 > < / span > < span class = cFD > SYS_COMPILE_TIME< / span > < span class = cF0 > + < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (< / span > < span class = cF9 > CDate< / span > < span class = cF0 > ) + < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (< / span > < span class = cF9 > CBinFile< / span > < span class = cF0 > ) < < / span > < span class = cF3 > DVD_BLK_SIZE< / span > < span class = cF0 >
< a name = "l29" > < / a >
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< a name = "l30" > < / a > < / span > < span class = cFD > MEM_BOOT_BASE< / span > < span class = cF0 > :: < / span > < span class = cF1 > DU32< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ; < / span > < span class = cF2 > //Offset from start used by reboot< / span > < span class = cF0 >
< a name = "l31" > < / a > < / span > < span class = cFD > MEM_E801< / span > < span class = cF0 > :: < / span > < span class = cF1 > DU16< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > , < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l32" > < / a > < / span > < span class = cFD > MEM_E820< / span > < span class = cF0 > :: < / span > < span class = cF1 > DU8< / span > < span class = cF0 > < / span > < span class = cF3 > MEM_E820_ENTRIES_NUM< / span > < span class = cF0 > * < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (< / span > < span class = cF9 > CMemE820< / span > < span class = cF0 > ) < / span > < span class = cF1 > DUP< / span > < span class = cF0 > (< / span > < span class = cFE > 0< / span > < span class = cF0 > );
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< a name = "l33" > < / a > < / span > < span class = cFD > MEM_PHYSICAL_SPACE< / span > < span class = cF0 > :: < / span > < span class = cF1 > DU64< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
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< a name = "l34" > < / a > < / span > < span class = cFD > SYS_GDT_PTR< / span > < span class = cF0 > :: < / span > < span class = cF1 > DU16< / span > < span class = cF0 > < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (< / span > < span class = cF9 > CGDT< / span > < span class = cF0 > ) - < / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l35" > < / a > < / span > < span class = cF1 > DU64< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l36" > < / a > < / span > < span class = cFD > SYS_PCI_BUSES< / span > < span class = cF0 > :: < / span > < span class = cF1 > DU16< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
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< a name = "l37" > < / a >
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< a name = "l38" > < / a > < / span > < span class = cF1 > ALIGN< / span > < span class = cF0 > < / span > < span class = cFE > 16< / span > < span class = cF0 > , < / span > < span class = cF3 > OC_NOP< / span > < span class = cF0 >
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< a name = "l39" > < / a >
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< a name = "l40" > < / a > < / span > < span class = cFD > SYS_GDT< / span > < span class = cF0 > :: < / span > < span class = cF2 > //See < / span > < a href = "https://tomawezome.github.io/ZealOS/Kernel/KernelA.HH.html#l396" > < span class = cF4 > CGDT< / span > < / a > < span class = cF0 >
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< a name = "l41" > < / a > GDT_NULL: < / span > < span class = cF1 > DU64< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ,< / span > < span class = cFE > 0< / span > < span class = cF0 > ;
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< a name = "l42" > < / a > GDT_BOOT_DS: < / span > < span class = cF1 > DU64< / span > < span class = cF0 > < / span > < span class = cFE > 0x00CF92000000FFFF< / span > < span class = cF0 > , < / span > < span class = cFE > 0< / span > < span class = cF0 > ; < / span > < span class = cF2 > //Gets patched.< / span > < span class = cF0 >
< a name = "l43" > < / a > GDT_BOOT_CS: < / span > < span class = cF1 > DU64< / span > < span class = cF0 > < / span > < span class = cFE > 0x00CF9A000000FFFF< / span > < span class = cF0 > , < / span > < span class = cFE > 0< / span > < span class = cF0 > ; < / span > < span class = cF2 > //Gets patched.< / span > < span class = cF0 >
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< a name = "l44" > < / a > GDT_CS32: < / span > < span class = cF1 > DU64< / span > < span class = cF0 > < / span > < span class = cFE > 0x00CF9A000000FFFF< / span > < span class = cF0 > , < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
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< a name = "l45" > < / a > GDT_CS64: < / span > < span class = cF1 > DU64< / span > < span class = cF0 > < / span > < span class = cFE > 0x00209A0000000000< / span > < span class = cF0 > , < / span > < span class = cFE > 0< / span > < span class = cF0 > ; < / span > < span class = cF2 > //The < / span > < a href = "https://tomawezome.github.io/ZealOS/Doc/Charter.DD.html#l1" > < span class = cF4 > Charter< / span > < / a > < span class = cF2 > says just ring0.< / span > < span class = cF0 >
< a name = "l46" > < / a > GDT_CS64_RING3: < / span > < span class = cF1 > DU64< / span > < span class = cF0 > < / span > < span class = cFE > 0x0020FA0000000000< / span > < span class = cF0 > , < / span > < span class = cFE > 0< / span > < span class = cF0 > ; < / span > < span class = cF2 > //< / span > < a href = "https://tomawezome.github.io/ZealOS/Demo/Lectures/Ring3.CC.html#l1" > < span class = cF4 > Ring3< / span > < / a > < span class = cF2 > , so you can play with.< / span > < span class = cF0 >
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< a name = "l47" > < / a > GDT_DS: < / span > < span class = cF1 > DU64< / span > < span class = cF0 > < / span > < span class = cFE > 0x00CF92000000FFFF< / span > < span class = cF0 > , < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
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< a name = "l48" > < / a > GDT_DS_RING3: < / span > < span class = cF1 > DU64< / span > < span class = cF0 > < / span > < span class = cFE > 0x00CFF2000000FFFF< / span > < span class = cF0 > , < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
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< a name = "l49" > < / a > GDT_TR: < / span > < span class = cF1 > DU8< / span > < span class = cF0 > < / span > < span class = cF3 > MP_PROCESSORS_NUM< / span > < span class = cF0 > * < / span > < span class = cFE > 16< / span > < span class = cF0 > < / span > < span class = cF1 > DUP< / span > < span class = cF0 > (< / span > < span class = cFE > 0< / span > < span class = cF0 > );
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< a name = "l50" > < / a > GDT_TR_RING3: < / span > < span class = cF1 > DU8< / span > < span class = cF0 > < / span > < span class = cF3 > MP_PROCESSORS_NUM< / span > < span class = cF0 > * < / span > < span class = cFE > 16< / span > < span class = cF0 > < / span > < span class = cF1 > DUP< / span > < span class = cF0 > (< / span > < span class = cFE > 0< / span > < span class = cF0 > );
< a name = "l51" > < / a > #< / span > < span class = cF1 > assert< / span > < span class = cF0 > $ - < / span > < span class = cFD > SYS_GDT< / span > < span class = cF0 > == < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (< / span > < span class = cF9 > CGDT< / span > < span class = cF0 > )
< a name = "l52" > < / a >
< a name = "l53" > < / a > < / span > < span class = cFD > SYS_FONT_PTR< / span > < span class = cF0 > :: < / span > < span class = cF1 > DU32< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l54" > < / a >
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< a name = "l55" > < / a > < / span > < span class = cFD > SYS_VBE_INFO< / span > < span class = cF0 > :: < / span > < span class = cF1 > DU8< / span > < span class = cF0 > < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (< / span > < span class = cF9 > CVBEInfo< / span > < span class = cF0 > ) < / span > < span class = cF1 > DUP< / span > < span class = cF0 > (< / span > < span class = cFE > 0< / span > < span class = cF0 > );
< a name = "l56" > < / a > < / span > < span class = cFD > SYS_VBE_MODES< / span > < span class = cF0 > :: < / span > < span class = cF1 > DU8< / span > < span class = cF0 > < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (< / span > < span class = cF9 > CVBEModeShort< / span > < span class = cF0 > ) * < / span > < span class = cF3 > VBE_MODES_NUM< / span > < span class = cF0 > < / span > < span class = cF1 > DUP< / span > < span class = cF0 > (< / span > < span class = cFE > 0< / span > < span class = cF0 > );
< a name = "l57" > < / a > < / span > < span class = cFD > SYS_VBE_FINAL_MODE< / span > < span class = cF0 > :: < / span > < span class = cF1 > DU8< / span > < span class = cF0 > < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (< / span > < span class = cF9 > CVBEMode< / span > < span class = cF0 > ) < / span > < span class = cF1 > DUP< / span > < span class = cF0 > (< / span > < span class = cFE > 0< / span > < span class = cF0 > );
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< a name = "l58" > < / a > < / span > < span class = cFD > SYS_VBE_FINAL_MODE_NUM< / span > < span class = cF0 > ::< / span > < span class = cF1 > DU16< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ; < / span > < span class = cF2 > //mode number of final mode set< / span > < span class = cF0 >
< a name = "l59" > < / a > #< / span > < span class = cF1 > assert< / span > < span class = cF0 > $ - < / span > < span class = cFD > SYS_KERNEL< / span > < span class = cF0 > == < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (< / span > < span class = cF9 > CKernel< / span > < span class = cF0 > ) - < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (< / span > < span class = cF9 > CBinFile< / span > < span class = cF0 > )
< a name = "l60" > < / a >
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< a name = "l61" > < / a > TEMP_VBE_MODE: < / span > < span class = cF1 > DU8< / span > < span class = cF0 > < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (< / span > < span class = cF9 > CVBEMode< / span > < span class = cF0 > ) < / span > < span class = cF1 > DUP< / span > < span class = cF0 > (< / span > < span class = cFE > 0< / span > < span class = cF0 > );
< a name = "l62" > < / a > MAX_VBE_MODE: < / span > < span class = cF1 > DU8< / span > < span class = cF0 > < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (< / span > < span class = cF9 > CVBEModeShort< / span > < span class = cF0 > ) < / span > < span class = cF1 > DUP< / span > < span class = cF0 > (< / span > < span class = cFE > 0< / span > < span class = cF0 > );
< a name = "l63" > < / a > MAX_SCREEN_HEIGHT: < / span > < span class = cF1 > DU16< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
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< a name = "l64" > < / a >
< a name = "l65" > < / a > #< / span > < span class = cF1 > exe< / span > < span class = cF0 >
< a name = "l66" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
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< a name = "l67" > < / a > < / span > < span class = cF5 > StreamPrint< / span > < span class = cF0 > (< / span > < span class = cF6 > " SCREEN_WIDTH:< / span > < span class = cF0 > < / span > < span class = cF6 > DU16< / span > < span class = cF0 > < / span > < span class = cF6 > %d;" < / span > < span class = cF0 >
< a name = "l68" > < / a > < / span > < span class = cF6 > " SCREEN_HEIGHT: DU16< / span > < span class = cF0 > < / span > < span class = cF6 > %d;" < / span > < span class = cF0 > , kernel_config-> screen_width, kernel_config-> screen_height);
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< a name = "l69" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 > ;
< a name = "l70" > < / a >
< a name = "l71" > < / a > < / span > < span class = cF2 > //************************************< / span > < span class = cF0 >
< a name = "l72" > < / a > < / span > < span class = cFD > CORE0_16BIT_INIT< / span > < span class = cF0 > ::
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< a name = "l73" > < / a > < / span > < span class = cF2 > //EAX is < / span > < a href = "https://tomawezome.github.io/ZealOS/Kernel/KStart16.CC.html#l311" > < span class = cF4 > SYS_BOOT_SRC< / span > < / a > < span class = cF2 > . (Val passed from boot blk, < / span > < a href = "https://tomawezome.github.io/ZealOS/System/Boot/BootHD.CC.html#l84" > < span class = cF4 > BootHD< / span > < / a > < span class = cF2 > , < / span > < a href = "https://tomawezome.github.io/ZealOS/System/Boot/BootDVD.CC.html#l175" > < span class = cF4 > BootDVD< / span > < / a > < span class = cF2 > , & < / span > < a href = "https://tomawezome.github.io/ZealOS/System/Boot/BootRAM.CC.html#l46" > < span class = cF4 > BootRAM< / span > < / a > < span class = cF2 > .)< / span > < span class = cF0 >
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< a name = "l74" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > ECX< / span > < span class = cF0 > , < / span > < span class = cFC > EAX< / span > < span class = cF0 >
< a name = "l75" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , (< / span > < span class = cF3 > BOOT_RAM_LIMIT< / span > < span class = cF0 > - < / span > < span class = cF3 > BOOT_STACK_SIZE< / span > < span class = cF0 > ) / < / span > < span class = cFE > 16< / span > < span class = cF0 >
< a name = "l76" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > SS< / span > < span class = cF0 > , < / span > < span class = cFC > AX< / span > < span class = cF0 >
< a name = "l77" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > SP< / span > < span class = cF0 > , < / span > < span class = cF3 > BOOT_STACK_SIZE< / span > < span class = cF0 >
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< a name = "l78" > < / a > < / span > < span class = cF1 > PUSH< / span > < span class = cF0 > < / span > < span class = cFC > ECX< / span > < span class = cF0 > < / span > < span class = cF2 > //Will be < / span > < a href = "https://tomawezome.github.io/ZealOS/Kernel/KStart16.CC.html#l311" > < span class = cF4 > SYS_BOOT_SRC< / span > < / a > < span class = cF2 > . See < / span > < a href = "https://tomawezome.github.io/ZealOS/System/Boot/BootHD.CC.html#l84" > < span class = cF4 > BootHD< / span > < / a > < span class = cF2 > , < / span > < a href = "https://tomawezome.github.io/ZealOS/System/Boot/BootDVD.CC.html#l175" > < span class = cF4 > BootDVD< / span > < / a > < span class = cF2 > & < / span > < a href = "https://tomawezome.github.io/ZealOS/System/Boot/BootRAM.CC.html#l46" > < span class = cF4 > BootRAM< / span > < / a > < span class = cF2 > .< / span > < span class = cF0 >
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< a name = "l79" > < / a > < / span > < span class = cF1 > PUSH< / span > < span class = cF0 > < / span > < span class = cFC > EBX< / span > < span class = cF0 >
< a name = "l80" > < / a > < / span > < span class = cF1 > CALL< / span > < span class = cF0 > < / span > < span class = cF9 > U16< / span > < span class = cF0 > GET_IP
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< a name = "l81" > < / a > GET_IP: < / span > < span class = cF1 > POP< / span > < span class = cF0 > < / span > < span class = cFC > BX< / span > < span class = cF0 >
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< a name = "l82" > < / a > < / span > < span class = cF1 > SUB< / span > < span class = cF0 > < / span > < span class = cFC > BX< / span > < span class = cF0 > , GET_IP
< a name = "l83" > < / a > < / span > < span class = cF1 > SHR< / span > < span class = cF0 > < / span > < span class = cFC > BX< / span > < span class = cF0 > , < / span > < span class = cFE > 4< / span > < span class = cF0 >
< a name = "l84" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFC > CS< / span > < span class = cF0 >
< a name = "l85" > < / a > < / span > < span class = cF1 > ADD< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFC > BX< / span > < span class = cF0 >
< a name = "l86" > < / a > < / span > < span class = cF1 > PUSH< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 >
< a name = "l87" > < / a > < / span > < span class = cF1 > PUSH< / span > < span class = cF0 > < / span > < span class = cF9 > U16< / span > < span class = cF0 > @@04
< a name = "l88" > < / a > < / span > < span class = cF1 > RETF< / span > < span class = cF0 >
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< a name = "l89" > < / a >
< a name = "l90" > < / a > @@04: < / span > < span class = cF1 > STI< / span > < span class = cF0 >
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< a name = "l91" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFC > CS< / span > < span class = cF0 >
< a name = "l92" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > DS< / span > < span class = cF0 > , < / span > < span class = cFC > AX< / span > < span class = cF0 >
< a name = "l93" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cF9 > U32< / span > < span class = cF0 > [< / span > < span class = cFD > SYS_RUN_LEVEL< / span > < span class = cF0 > ], < / span > < span class = cF3 > RLF_16BIT< / span > < span class = cF0 >
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< a name = "l94" > < / a >
< a name = "l95" > < / a > < / span > < span class = cF2 > //Our variables are on the data segment, but VBE functions require ES.< / span > < span class = cF0 >
< a name = "l96" > < / a > < / span > < span class = cF2 > //moving DS into ES, while preserving ES< / span > < span class = cF0 >
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< a name = "l97" > < / a > < / span > < span class = cF1 > PUSH< / span > < span class = cF0 > < / span > < span class = cFC > ES< / span > < span class = cF0 >
< a name = "l98" > < / a > < / span > < span class = cF1 > PUSH< / span > < span class = cF0 > < / span > < span class = cFC > DS< / span > < span class = cF0 >
< a name = "l99" > < / a > < / span > < span class = cF1 > POP< / span > < span class = cF0 > < / span > < span class = cFC > ES< / span > < span class = cF0 >
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< a name = "l100" > < / a >
< a name = "l101" > < / a > < / span > < span class = cF2 > //Get VBE implementation information< / span > < span class = cF0 >
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< a name = "l102" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFE > 0x4F00< / span > < span class = cF0 >
< a name = "l103" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > DI< / span > < span class = cF0 > , < / span > < span class = cFD > SYS_VBE_INFO< / span > < span class = cF0 >
< a name = "l104" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cF9 > CVBEInfo< / span > < span class = cF0 > .signature[< / span > < span class = cFC > DI< / span > < span class = cF0 > ], < / span > < span class = cF6 > 'VBE2'< / span > < span class = cF0 > < / span > < span class = cF2 > //set to 'VBE2' to use VBE 2.0 functionality< / span > < span class = cF0 >
< a name = "l105" > < / a > < / span > < span class = cF1 > INT< / span > < span class = cF0 > < / span > < span class = cFE > 0x10< / span > < span class = cF0 >
< a name = "l106" > < / a > < / span > < span class = cF1 > POP< / span > < span class = cF0 > < / span > < span class = cFC > ES< / span > < span class = cF0 >
< a name = "l107" > < / a > < / span > < span class = cF1 > CMP< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFE > 0x004F< / span > < span class = cF0 >
< a name = "l108" > < / a > < / span > < span class = cF1 > JE< / span > < span class = cF0 > @@05
< a name = "l109" > < / a > < / span > < span class = cF1 > JMP< / span > < span class = cF0 > $ < / span > < span class = cF2 > //Freeze system if VBE not supported< / span > < span class = cF0 >
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< a name = "l110" > < / a >
< a name = "l111" > < / a > @@05:
< a name = "l112" > < / a >
< a name = "l113" > < / a > < / span > < span class = cF2 > /*Loop variables:< / span > < span class = cF0 >
< a name = "l114" > < / a > < / span > < span class = cF2 > DI < - Temporary storage for mode information< / span > < span class = cF0 >
< a name = "l115" > < / a > < / span > < span class = cF2 > CX < - Mode number< / span > < span class = cF0 >
< a name = "l116" > < / a > < / span > < span class = cF2 > DX < - mode array< / span > < span class = cF0 >
< a name = "l117" > < / a > < / span > < span class = cF2 > GS < - Segment for video modes list< / span > < span class = cF0 >
< a name = "l118" > < / a > < / span > < span class = cF2 > SI < - Offset for video modes list< / span > < span class = cF0 >
< a name = "l119" > < / a > < / span > < span class = cF2 > */< / span > < span class = cF0 >
< a name = "l120" > < / a > < / span > < span class = cF2 > //Obtain segment:offset of list of potential video modes< / span > < span class = cF0 >
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< a name = "l121" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFD > SYS_VBE_INFO< / span > < span class = cF0 >
< a name = "l122" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > SI< / span > < span class = cF0 > , < / span > < span class = cF9 > CVBEInfo< / span > < span class = cF0 > .video_modes[< / span > < span class = cFC > AX< / span > < span class = cF0 > ]
< a name = "l123" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > GS< / span > < span class = cF0 > , < / span > < span class = cF9 > CVBEInfo< / span > < span class = cF0 > .video_modes+< / span > < span class = cFE > 2< / span > < span class = cF0 > [< / span > < span class = cFC > AX< / span > < span class = cF0 > ]
< a name = "l124" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > DI< / span > < span class = cF0 > , TEMP_VBE_MODE
< a name = "l125" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > DX< / span > < span class = cF0 > , < / span > < span class = cFD > SYS_VBE_MODES< / span > < span class = cF0 >
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< a name = "l126" > < / a >
< a name = "l127" > < / a > @@06: < / span > < span class = cF2 > //Loop through all the mode numbers< / span > < span class = cF0 >
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< a name = "l128" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFC > GS< / span > < span class = cF0 > :[< / span > < span class = cFC > SI< / span > < span class = cF0 > ]
< a name = "l129" > < / a > < / span > < span class = cF1 > CMP< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFE > 0xFFFF< / span > < span class = cF0 > < / span > < span class = cF2 > //FFFF signifies the end of the list< / span > < span class = cF0 >
< a name = "l130" > < / a > < / span > < span class = cF1 > JE< / span > < span class = cF0 > @@08
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< a name = "l131" > < / a >
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< a name = "l132" > < / a > < / span > < span class = cF1 > ADD< / span > < span class = cF0 > < / span > < span class = cFC > SI< / span > < span class = cF0 > , < / span > < span class = cFE > 2< / span > < span class = cF0 > < / span > < span class = cF2 > //Increment pointer to read next U16 mode< / span > < span class = cF0 >
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< a name = "l133" > < / a >
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< a name = "l134" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > CX< / span > < span class = cF0 > , < / span > < span class = cFC > AX< / span > < span class = cF0 >
< a name = "l135" > < / a > < / span > < span class = cF1 > BTS< / span > < span class = cF0 > < / span > < span class = cFC > CX< / span > < span class = cF0 > , < / span > < span class = cFE > 14< / span > < span class = cF0 > < / span > < span class = cF2 > //Set linear framebuffer bit in the mode number we are about to pass to the BIOS below< / span > < span class = cF0 >
< a name = "l136" > < / a > < / span > < span class = cF1 > PUSH< / span > < span class = cF0 > < / span > < span class = cFC > ES< / span > < span class = cF0 >
< a name = "l137" > < / a > < / span > < span class = cF1 > PUSH< / span > < span class = cF0 > < / span > < span class = cFC > DS< / span > < span class = cF0 >
< a name = "l138" > < / a > < / span > < span class = cF1 > POP< / span > < span class = cF0 > < / span > < span class = cFC > ES< / span > < span class = cF0 >
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< a name = "l139" > < / a > < / span > < span class = cF2 > //Get mode information for mode number< / span > < span class = cF0 >
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< a name = "l140" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFE > 0x4F01< / span > < span class = cF0 >
< a name = "l141" > < / a > < / span > < span class = cF1 > INT< / span > < span class = cF0 > < / span > < span class = cFE > 0x10< / span > < span class = cF0 >
< a name = "l142" > < / a > < / span > < span class = cF1 > POP< / span > < span class = cF0 > < / span > < span class = cFC > ES< / span > < span class = cF0 >
< a name = "l143" > < / a > < / span > < span class = cF1 > CMP< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFE > 0x004F< / span > < span class = cF0 >
< a name = "l144" > < / a > < / span > < span class = cF1 > JNE< / span > < span class = cF0 > @@06 < / span > < span class = cF2 > //if call to get mode information failed< / span > < span class = cF0 >
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< a name = "l145" > < / a >
< a name = "l146" > < / a > < / span > < span class = cF2 > //filter everything but 32-bit color< / span > < span class = cF0 >
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< a name = "l147" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AL< / span > < span class = cF0 > , < / span > < span class = cF9 > CVBEMode< / span > < span class = cF0 > .bpp[< / span > < span class = cFC > DI< / span > < span class = cF0 > ]
< a name = "l148" > < / a > < / span > < span class = cF1 > CMP< / span > < span class = cF0 > < / span > < span class = cFC > AL< / span > < span class = cF0 > , < / span > < span class = cFE > 32< / span > < span class = cF0 >
< a name = "l149" > < / a > < / span > < span class = cF1 > JNE< / span > < span class = cF0 > @@06
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< a name = "l150" > < / a >
< a name = "l151" > < / a > < / span > < span class = cF2 > //Check if the mode is actually supported< / span > < span class = cF0 >
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< a name = "l152" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cF9 > CVBEMode< / span > < span class = cF0 > .attributes[< / span > < span class = cFC > DI< / span > < span class = cF0 > ]
< a name = "l153" > < / a > < / span > < span class = cF1 > AND< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFE > 0x91< / span > < span class = cF0 > < / span > < span class = cF2 > //bit 0 = supported, bit 4 = graphics mode, bit 7 = linear framebuffer< / span > < span class = cF0 >
< a name = "l154" > < / a > < / span > < span class = cF1 > CMP< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFE > 0x91< / span > < span class = cF0 >
< a name = "l155" > < / a > < / span > < span class = cF1 > JNE< / span > < span class = cF0 > @@06
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< a name = "l156" > < / a >
< a name = "l157" > < / a > < / span > < span class = cF2 > //Only want memory model of packed pixel or direct color (RGB)< / span > < span class = cF0 >
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< a name = "l158" > < / a > < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > MOV < / span > < span class = cF0 > < / span > < span class = cF2 > AX, CVBEMode.memory_model[DI]< / span > < span class = cF0 >
< a name = "l159" > < / a > < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > CMP < / span > < span class = cF0 > < / span > < span class = cF2 > AX, 4< / span > < span class = cF0 >
< a name = "l160" > < / a > < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > JNE < / span > < span class = cF0 > < / span > < span class = cF2 > @@06< / span > < span class = cF0 >
< a name = "l161" > < / a > < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > CMP < / span > < span class = cF0 > < / span > < span class = cF2 > AX, 6< / span > < span class = cF0 >
< a name = "l162" > < / a > < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > JNE < / span > < span class = cF0 > < / span > < span class = cF2 > @@06< / span > < span class = cF0 >
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< a name = "l163" > < / a > < / span > < span class = cF2 > //Copy information about this mode into an element of the mode array< / span > < span class = cF0 >
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< a name = "l164" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > BX< / span > < span class = cF0 > , < / span > < span class = cF9 > CVBEMode< / span > < span class = cF0 > .height[< / span > < span class = cFC > DI< / span > < span class = cF0 > ]
< a name = "l165" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cF9 > CVBEModeShort< / span > < span class = cF0 > .height[< / span > < span class = cFC > DX< / span > < span class = cF0 > ], < / span > < span class = cFC > BX< / span > < span class = cF0 >
< a name = "l166" > < / a > < / span > < span class = cF1 > CMP< / span > < span class = cF0 > < / span > < span class = cFC > BX< / span > < span class = cF0 > , [MAX_SCREEN_HEIGHT]
< a name = "l167" > < / a > < / span > < span class = cF1 > JL< / span > < span class = cF0 > @@07
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< a name = "l168" > < / a >
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< a name = "l169" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > [MAX_SCREEN_HEIGHT], < / span > < span class = cFC > BX< / span > < span class = cF0 >
< a name = "l170" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > [MAX_VBE_MODE], < / span > < span class = cFC > CX< / span > < span class = cF0 >
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< a name = "l171" > < / a >
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< a name = "l172" > < / a > @@07: < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cF9 > CVBEMode< / span > < span class = cF0 > .width[< / span > < span class = cFC > DI< / span > < span class = cF0 > ]
< a name = "l173" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cF9 > CVBEModeShort< / span > < span class = cF0 > .width[< / span > < span class = cFC > DX< / span > < span class = cF0 > ], < / span > < span class = cFC > AX< / span > < span class = cF0 >
< a name = "l174" > < / a > < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > MOV< / span > < span class = cF0 > < / span > < span class = cF2 > EAX, CVBEMode.max_pixel_clock[DI]< / span > < span class = cF0 >
< a name = "l175" > < / a > < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > MOV< / span > < span class = cF0 > < / span > < span class = cF2 > CVBEModeShort.max_pixel_clock[DX], EAX< / span > < span class = cF0 >
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< a name = "l176" > < / a >
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< a name = "l177" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cF9 > CVBEModeShort< / span > < span class = cF0 > .mode_num[< / span > < span class = cFC > DX< / span > < span class = cF0 > ], < / span > < span class = cFC > CX< / span > < span class = cF0 >
< a name = "l178" > < / a > < / span > < span class = cF1 > ADD< / span > < span class = cF0 > < / span > < span class = cFC > DX< / span > < span class = cF0 > , < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (< / span > < span class = cF9 > CVBEModeShort< / span > < span class = cF0 > ) < / span > < span class = cF2 > //next array element< / span > < span class = cF0 >
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< a name = "l179" > < / a >
< a name = "l180" > < / a > < / span > < span class = cF2 > //Check if width and height match< / span > < span class = cF0 >
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< a name = "l181" > < / a > < / span > < span class = cF1 > CMP< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , [SCREEN_WIDTH]
< a name = "l182" > < / a > < / span > < span class = cF1 > JNE< / span > < span class = cF0 > @@06
< a name = "l183" > < / a > < / span > < span class = cF1 > CMP< / span > < span class = cF0 > < / span > < span class = cFC > BX< / span > < span class = cF0 > , [SCREEN_HEIGHT]
< a name = "l184" > < / a > < / span > < span class = cF1 > JNE< / span > < span class = cF0 > @@06
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< a name = "l185" > < / a >
< a name = "l186" > < / a > < / span > < span class = cF2 > //If we've made it here we have our mode< / span > < span class = cF0 >
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< a name = "l187" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > [< / span > < span class = cFD > SYS_VBE_FINAL_MODE_NUM< / span > < span class = cF0 > ], < / span > < span class = cFC > CX< / span > < span class = cF0 >
< a name = "l188" > < / a > < / span > < span class = cF1 > JMP< / span > < span class = cF0 > @@06
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< a name = "l189" > < / a >
< a name = "l190" > < / a > @@08: < / span > < span class = cF2 > //End of loop< / span > < span class = cF0 >
< a name = "l191" > < / a > < / span > < span class = cF2 > //If there isn't a valid mode set by user through kernel config, set the mode with the biggest height.< / span > < span class = cF0 >
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< a name = "l192" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , [< / span > < span class = cFD > SYS_VBE_FINAL_MODE_NUM< / span > < span class = cF0 > ]
< a name = "l193" > < / a > < / span > < span class = cF1 > CMP< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFE > 0< / span > < span class = cF0 >
< a name = "l194" > < / a > < / span > < span class = cF1 > JNE< / span > < span class = cF0 > @@09
< a name = "l195" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > CX< / span > < span class = cF0 > , [MAX_VBE_MODE]
< a name = "l196" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > [< / span > < span class = cFD > SYS_VBE_FINAL_MODE_NUM< / span > < span class = cF0 > ], < / span > < span class = cFC > CX< / span > < span class = cF0 >
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< a name = "l197" > < / a >
< a name = "l198" > < / a > @@09: < / span > < span class = cF1 > PUSH< / span > < span class = cF0 > < / span > < span class = cFC > ES< / span > < span class = cF0 >
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< a name = "l199" > < / a > < / span > < span class = cF1 > PUSH< / span > < span class = cF0 > < / span > < span class = cFC > DS< / span > < span class = cF0 >
< a name = "l200" > < / a > < / span > < span class = cF1 > POP< / span > < span class = cF0 > < / span > < span class = cFC > ES< / span > < span class = cF0 >
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< a name = "l201" > < / a > < / span > < span class = cF2 > //Get mode infomration for the mode we want< / span > < span class = cF0 >
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< a name = "l202" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > DI< / span > < span class = cF0 > , < / span > < span class = cFD > SYS_VBE_FINAL_MODE< / span > < span class = cF0 >
< a name = "l203" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > CX< / span > < span class = cF0 > , [< / span > < span class = cFD > SYS_VBE_FINAL_MODE_NUM< / span > < span class = cF0 > ]
< a name = "l204" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFE > 0x4F01< / span > < span class = cF0 >
< a name = "l205" > < / a > < / span > < span class = cF1 > INT< / span > < span class = cF0 > < / span > < span class = cFE > 0x10< / span > < span class = cF0 >
< a name = "l206" > < / a > < / span > < span class = cF1 > POP< / span > < span class = cF0 > < / span > < span class = cFC > ES< / span > < span class = cF0 >
< a name = "l207" > < / a > < / span > < span class = cF1 > CMP< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFE > 0x004F< / span > < span class = cF0 >
< a name = "l208" > < / a > < / span > < span class = cF1 > JNE< / span > < span class = cF0 > @@10 < / span > < span class = cF2 > //if called failed< / span > < span class = cF0 >
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< a name = "l209" > < / a >
< a name = "l210" > < / a > < / span > < span class = cF2 > //Set the mode; call takes mode number in BX< / span > < span class = cF0 >
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< a name = "l211" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFE > 0x4F02< / span > < span class = cF0 >
< a name = "l212" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > BX< / span > < span class = cF0 > , < / span > < span class = cFC > CX< / span > < span class = cF0 >
< a name = "l213" > < / a > < / span > < span class = cF1 > INT< / span > < span class = cF0 > < / span > < span class = cFE > 0x10< / span > < span class = cF0 >
< a name = "l214" > < / a > < / span > < span class = cF1 > CMP< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFE > 0x004F< / span > < span class = cF0 >
< a name = "l215" > < / a > < / span > < span class = cF1 > JNE< / span > < span class = cF0 > @@10
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< a name = "l216" > < / a >
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< a name = "l217" > < / a > < / span > < span class = cF1 > BTS< / span > < span class = cF0 > < / span > < span class = cF9 > U32< / span > < span class = cF0 > [< / span > < span class = cFD > SYS_RUN_LEVEL< / span > < span class = cF0 > ], < / span > < span class = cF3 > RLf_VESA< / span > < span class = cF0 >
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< a name = "l218" > < / a > @@10:
< a name = "l219" > < / a >
< a name = "l220" > < / a > < / span > < span class = cF2 > //Get pointer to 8x8 VGA ROM font.< / span > < span class = cF0 >
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< a name = "l221" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFE > 0x1130< / span > < span class = cF0 >
< a name = "l222" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > BH< / span > < span class = cF0 > , < / span > < span class = cFE > 3< / span > < span class = cF0 >
< a name = "l223" > < / a > < / span > < span class = cF1 > INT< / span > < span class = cF0 > < / span > < span class = cFE > 0x10< / span > < span class = cF0 >
< a name = "l224" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFC > ES< / span > < span class = cF0 >
< a name = "l225" > < / a > < / span > < span class = cF1 > SHL< / span > < span class = cF0 > < / span > < span class = cFC > EAX< / span > < span class = cF0 > , < / span > < span class = cFE > 16< / span > < span class = cF0 >
< a name = "l226" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFC > BP< / span > < span class = cF0 >
< a name = "l227" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cF9 > U32< / span > < span class = cF0 > [< / span > < span class = cFD > SYS_FONT_PTR< / span > < span class = cF0 > ], < / span > < span class = cFC > EAX< / span > < span class = cF0 >
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< a name = "l228" > < / a >
< a name = "l229" > < / a > < / span > < span class = cF2 > //Get E801 memory map.< / span > < span class = cF0 >
< a name = "l230" > < / a > < / span > < span class = cF2 > //Output: AX = Memory between 1MiB and 16MiB in KiB (max 0x3C00 == 15 MiB)< / span > < span class = cF0 >
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< a name = "l231" > < / a > < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > BX = Memory after 16MiB until first memory hole in 64KiB blocks.< / span > < span class = cF0 >
< a name = "l232" > < / a > < / span > < span class = cF1 > XOR< / span > < span class = cF0 > < / span > < span class = cFC > CX< / span > < span class = cF0 > , < / span > < span class = cFC > CX< / span > < span class = cF0 >
< a name = "l233" > < / a > < / span > < span class = cF1 > XOR< / span > < span class = cF0 > < / span > < span class = cFC > DX< / span > < span class = cF0 > , < / span > < span class = cFC > DX< / span > < span class = cF0 >
< a name = "l234" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFE > 0xE801< / span > < span class = cF0 >
< a name = "l235" > < / a > < / span > < span class = cF1 > INT< / span > < span class = cF0 > < / span > < span class = cFE > 0x15< / span > < span class = cF0 >
< a name = "l236" > < / a > < / span > < span class = cF1 > JCXZ< / span > < span class = cF0 > @@12 < / span > < span class = cF2 > //if CX and DX are zero, use AX and BX instead.< / span > < span class = cF0 >
< a name = "l237" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFC > CX< / span > < span class = cF0 >
< a name = "l238" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > BX< / span > < span class = cF0 > , < / span > < span class = cFC > DX< / span > < span class = cF0 >
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< a name = "l239" > < / a > @@12: < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cF9 > U16< / span > < span class = cF0 > [< / span > < span class = cFD > MEM_E801< / span > < span class = cF0 > ], < / span > < span class = cFC > AX< / span > < span class = cF0 >
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< a name = "l240" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cF9 > U16< / span > < span class = cF0 > [< / span > < span class = cFD > MEM_E801< / span > < span class = cF0 > +< / span > < span class = cFE > 2< / span > < span class = cF0 > ], < / span > < span class = cFC > BX< / span > < span class = cF0 >
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< a name = "l241" > < / a >
< a name = "l242" > < / a > < / span > < span class = cF2 > //Get E820 memory map.< / span > < span class = cF0 >
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< a name = "l243" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > CX< / span > < span class = cF0 > , < / span > < span class = cF3 > MEM_E820_ENTRIES_NUM< / span > < span class = cF0 > - < / span > < span class = cFE > 1< / span > < span class = cF0 > < / span > < span class = cF2 > //Leave one to terminate< / span > < span class = cF0 >
< a name = "l244" > < / a > < / span > < span class = cF1 > XOR< / span > < span class = cF0 > < / span > < span class = cFC > EBX< / span > < span class = cF0 > , < / span > < span class = cFC > EBX< / span > < span class = cF0 >
< a name = "l245" > < / a > < / span > < span class = cF1 > PUSH< / span > < span class = cF0 > < / span > < span class = cFC > DS< / span > < span class = cF0 >
< a name = "l246" > < / a > < / span > < span class = cF1 > POP< / span > < span class = cF0 > < / span > < span class = cFC > ES< / span > < span class = cF0 >
< a name = "l247" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > DI< / span > < span class = cF0 > , < / span > < span class = cFD > MEM_E820< / span > < span class = cF0 >
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< a name = "l248" > < / a > @@15: < / span > < span class = cF1 > PUSH< / span > < span class = cF0 > < / span > < span class = cFC > CX< / span > < span class = cF0 >
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< a name = "l249" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > EAX< / span > < span class = cF0 > , < / span > < span class = cFE > 0xE820< / span > < span class = cF0 >
< a name = "l250" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > ECX< / span > < span class = cF0 > , < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (< / span > < span class = cF9 > CMemE820< / span > < span class = cF0 > )
< a name = "l251" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > EDX< / span > < span class = cF0 > , < / span > < span class = cF6 > 'PAMS'< / span > < span class = cF0 >
< a name = "l252" > < / a > < / span > < span class = cF1 > INT< / span > < span class = cF0 > < / span > < span class = cFE > 0x15< / span > < span class = cF0 >
< a name = "l253" > < / a > < / span > < span class = cF1 > JC< / span > < span class = cF0 > @@20
< a name = "l254" > < / a > < / span > < span class = cF1 > CMP< / span > < span class = cF0 > < / span > < span class = cFC > EAX< / span > < span class = cF0 > , < / span > < span class = cF6 > 'PAMS'< / span > < span class = cF0 >
< a name = "l255" > < / a > < / span > < span class = cF1 > JNE< / span > < span class = cF0 > @@20
< a name = "l256" > < / a > < / span > < span class = cF1 > TEST< / span > < span class = cF0 > < / span > < span class = cFC > EBX< / span > < span class = cF0 > , < / span > < span class = cFC > EBX< / span > < span class = cF0 >
< a name = "l257" > < / a > < / span > < span class = cF1 > JZ< / span > < span class = cF0 > @@20
< a name = "l258" > < / a > < / span > < span class = cF1 > ADD< / span > < span class = cF0 > < / span > < span class = cFC > DI< / span > < span class = cF0 > , < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (< / span > < span class = cF9 > CMemE820< / span > < span class = cF0 > )
< a name = "l259" > < / a > < / span > < span class = cF1 > POP< / span > < span class = cF0 > < / span > < span class = cFC > CX< / span > < span class = cF0 >
< a name = "l260" > < / a > < / span > < span class = cF1 > LOOP< / span > < span class = cF0 > @@15
< a name = "l261" > < / a > < / span > < span class = cF1 > SUB< / span > < span class = cF0 > < / span > < span class = cFC > SP< / span > < span class = cF0 > , < / span > < span class = cFE > 2< / span > < span class = cF0 >
< a name = "l262" > < / a > @@20: < / span > < span class = cF1 > ADD< / span > < span class = cF0 > < / span > < span class = cFC > SP< / span > < span class = cF0 > , < / span > < span class = cFE > 2< / span > < span class = cF0 > < / span > < span class = cF2 > //if called failed we want to nullify the PUSHed CX value.< / span > < span class = cF0 >
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< a name = "l263" > < / a >
< a name = "l264" > < / a > < / span > < span class = cF2 > //Find how much space to map, start with E801 limit.< / span > < span class = cF0 >
2021-07-04 23:11:34 +01:00
< a name = "l265" > < / a > < / span > < span class = cF1 > XOR< / span > < span class = cF0 > < / span > < span class = cFC > EAX< / span > < span class = cF0 > , < / span > < span class = cFC > EAX< / span > < span class = cF0 >
< a name = "l266" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , [< / span > < span class = cFD > MEM_E801< / span > < span class = cF0 > +< / span > < span class = cFE > 2< / span > < span class = cF0 > ]
< a name = "l267" > < / a > < / span > < span class = cF1 > SHL< / span > < span class = cF0 > < / span > < span class = cFC > EAX< / span > < span class = cF0 > , < / span > < span class = cFE > 16< / span > < span class = cF0 >
< a name = "l268" > < / a > < / span > < span class = cF1 > ADD< / span > < span class = cF0 > < / span > < span class = cFC > EAX< / span > < span class = cF0 > , < / span > < span class = cF3 > SYS_16MEG_AREA_LIMIT< / span > < span class = cF0 >
< a name = "l269" > < / a > < / span > < span class = cF1 > XOR< / span > < span class = cF0 > < / span > < span class = cFC > EDX< / span > < span class = cF0 > , < / span > < span class = cFC > EDX< / span > < span class = cF0 >
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< a name = "l270" > < / a >
< a name = "l271" > < / a > < / span > < span class = cF2 > //Find max of E820 to set mapped space.< / span > < span class = cF0 >
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< a name = "l272" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > SI< / span > < span class = cF0 > , < / span > < span class = cFD > MEM_E820< / span > < span class = cF0 >
2021-07-03 05:07:57 +01:00
< a name = "l273" > < / a > @@25: < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > CL< / span > < span class = cF0 > , < / span > < span class = cF9 > CMemE820< / span > < span class = cF0 > .type[< / span > < span class = cFC > SI< / span > < span class = cF0 > ]
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< a name = "l274" > < / a > < / span > < span class = cF1 > TEST< / span > < span class = cF0 > < / span > < span class = cFC > CL< / span > < span class = cF0 > , < / span > < span class = cFC > CL< / span > < span class = cF0 >
< a name = "l275" > < / a > < / span > < span class = cF1 > JZ< / span > < span class = cF0 > @@35
< a name = "l276" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > EBX< / span > < span class = cF0 > , < / span > < span class = cF9 > CMemE820< / span > < span class = cF0 > .base [< / span > < span class = cFC > SI< / span > < span class = cF0 > ]
< a name = "l277" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > ECX< / span > < span class = cF0 > , < / span > < span class = cF9 > CMemE820< / span > < span class = cF0 > .base+< / span > < span class = cFE > 4< / span > < span class = cF0 > [< / span > < span class = cFC > SI< / span > < span class = cF0 > ]
< a name = "l278" > < / a > < / span > < span class = cF1 > ADD< / span > < span class = cF0 > < / span > < span class = cFC > EBX< / span > < span class = cF0 > , < / span > < span class = cF9 > CMemE820< / span > < span class = cF0 > .len [< / span > < span class = cFC > SI< / span > < span class = cF0 > ]
< a name = "l279" > < / a > < / span > < span class = cF1 > ADC< / span > < span class = cF0 > < / span > < span class = cFC > ECX< / span > < span class = cF0 > , < / span > < span class = cF9 > CMemE820< / span > < span class = cF0 > .len+< / span > < span class = cFE > 4< / span > < span class = cF0 > [< / span > < span class = cFC > SI< / span > < span class = cF0 > ]
< a name = "l280" > < / a > < / span > < span class = cF1 > SUB< / span > < span class = cF0 > < / span > < span class = cFC > EBX< / span > < span class = cF0 > , < / span > < span class = cFC > EAX< / span > < span class = cF0 >
< a name = "l281" > < / a > < / span > < span class = cF1 > SBB< / span > < span class = cF0 > < / span > < span class = cFC > ECX< / span > < span class = cF0 > , < / span > < span class = cFC > EDX< / span > < span class = cF0 >
< a name = "l282" > < / a > < / span > < span class = cF1 > JC< / span > < span class = cF0 > @@30
< a name = "l283" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > EAX< / span > < span class = cF0 > , < / span > < span class = cF9 > CMemE820< / span > < span class = cF0 > .base [< / span > < span class = cFC > SI< / span > < span class = cF0 > ]
< a name = "l284" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > EDX< / span > < span class = cF0 > , < / span > < span class = cF9 > CMemE820< / span > < span class = cF0 > .base+< / span > < span class = cFE > 4< / span > < span class = cF0 > [< / span > < span class = cFC > SI< / span > < span class = cF0 > ]
< a name = "l285" > < / a > < / span > < span class = cF1 > ADD< / span > < span class = cF0 > < / span > < span class = cFC > EAX< / span > < span class = cF0 > , < / span > < span class = cF9 > CMemE820< / span > < span class = cF0 > .len [< / span > < span class = cFC > SI< / span > < span class = cF0 > ]
< a name = "l286" > < / a > < / span > < span class = cF1 > ADC< / span > < span class = cF0 > < / span > < span class = cFC > EDX< / span > < span class = cF0 > , < / span > < span class = cF9 > CMemE820< / span > < span class = cF0 > .len+< / span > < span class = cFE > 4< / span > < span class = cF0 > [< / span > < span class = cFC > SI< / span > < span class = cF0 > ]
< a name = "l287" > < / a > @@30: < / span > < span class = cF1 > ADD< / span > < span class = cF0 > < / span > < span class = cFC > SI< / span > < span class = cF0 > , < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (< / span > < span class = cF9 > CMemE820< / span > < span class = cF0 > )
< a name = "l288" > < / a > < / span > < span class = cF1 > JMP< / span > < span class = cF0 > @@25
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< a name = "l289" > < / a >
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< a name = "l290" > < / a > @@35: < / span > < span class = cF1 > MOV< / span > < span class = cF0 > [< / span > < span class = cFD > MEM_PHYSICAL_SPACE< / span > < span class = cF0 > ], < / span > < span class = cFC > EAX< / span > < span class = cF0 >
< a name = "l291" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > [< / span > < span class = cFD > MEM_PHYSICAL_SPACE< / span > < span class = cF0 > +< / span > < span class = cFE > 4< / span > < span class = cF0 > ], < / span > < span class = cFC > EDX< / span > < span class = cF0 >
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< a name = "l292" > < / a >
< a name = "l293" > < / a > < / span > < span class = cF2 > //Get PCI Bus Info< / span > < span class = cF0 >
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< a name = "l294" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cF9 > U16< / span > < span class = cF0 > [< / span > < span class = cFD > SYS_PCI_BUSES< / span > < span class = cF0 > ], < / span > < span class = cFE > 256< / span > < span class = cF0 >
< a name = "l295" > < / a > < / span > < span class = cF1 > XOR< / span > < span class = cF0 > < / span > < span class = cFC > DX< / span > < span class = cF0 > , < / span > < span class = cFC > DX< / span > < span class = cF0 >
< a name = "l296" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFE > 0xB101< / span > < span class = cF0 >
< a name = "l297" > < / a > < / span > < span class = cF1 > INT< / span > < span class = cF0 > < / span > < span class = cFE > 0x1A< / span > < span class = cF0 >
< a name = "l298" > < / a > < / span > < span class = cF1 > CMP< / span > < span class = cF0 > < / span > < span class = cFC > DX< / span > < span class = cF0 > , < / span > < span class = cF6 > 'PC'< / span > < span class = cF0 >
< a name = "l299" > < / a > < / span > < span class = cF1 > JNE< / span > < span class = cF0 > @@40
< a name = "l300" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > CH< / span > < span class = cF0 > , < / span > < span class = cFE > 0< / span > < span class = cF0 >
< a name = "l301" > < / a > < / span > < span class = cF1 > INC< / span > < span class = cF0 > < / span > < span class = cFC > CX< / span > < span class = cF0 >
< a name = "l302" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cF9 > U16< / span > < span class = cF0 > [< / span > < span class = cFD > SYS_PCI_BUSES< / span > < span class = cF0 > ], < / span > < span class = cFC > CX< / span > < span class = cF0 >
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< a name = "l303" > < / a > @@40:
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< a name = "l304" > < / a > < / span > < span class = cF1 > CLI< / span > < span class = cF0 >
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< a name = "l305" > < / a > < / span > < span class = cF2 > //Enable A20< / span > < span class = cF0 >
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< a name = "l306" > < / a > < / span > < span class = cF1 > IN< / span > < span class = cF0 > < / span > < span class = cFC > AL< / span > < span class = cF0 > , < / span > < span class = cFE > 0x92< / span > < span class = cF0 >
< a name = "l307" > < / a > < / span > < span class = cF1 > OR< / span > < span class = cF0 > < / span > < span class = cFC > AL< / span > < span class = cF0 > , < / span > < span class = cFE > 2< / span > < span class = cF0 >
< a name = "l308" > < / a > < / span > < span class = cF1 > OUT< / span > < span class = cF0 > < / span > < span class = cFE > 0x92< / span > < span class = cF0 > , < / span > < span class = cFC > AL< / span > < span class = cF0 >
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< a name = "l309" > < / a >
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< a name = "l310" > < / a > < / span > < span class = cF1 > POP< / span > < span class = cF0 > < / span > < span class = cF9 > U32< / span > < span class = cF0 > [< / span > < span class = cFD > SYS_BOOT_BLK< / span > < span class = cF0 > ]
2021-07-05 01:57:09 +01:00
< a name = "l311" > < / a > < / span > < span class = cF1 > POP< / span > < span class = cF0 > < / span > < span class = cF9 > U32< / span > < span class = cF0 > [< / span > < span class = cFD > SYS_BOOT_SRC< / span > < span class = cF0 > ] < / span > < span class = cF2 > //See < / span > < a href = "https://tomawezome.github.io/ZealOS/System/Boot/BootHD.CC.html#l84" > < span class = cF4 > BootHD< / span > < / a > < span class = cF2 > , < / span > < a href = "https://tomawezome.github.io/ZealOS/System/Boot/BootDVD.CC.html#l175" > < span class = cF4 > BootDVD< / span > < / a > < span class = cF2 > , & < / span > < a href = "https://tomawezome.github.io/ZealOS/System/Boot/BootRAM.CC.html#l46" > < span class = cF4 > BootRAM< / span > < / a > < span class = cF2 > .< / span > < span class = cF0 >
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< a name = "l312" > < / a >
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< a name = "l313" > < / a > < / span > < span class = cF1 > CLD< / span > < span class = cF0 >
< a name = "l314" > < / a > < / span > < span class = cF1 > XOR< / span > < span class = cF0 > < / span > < span class = cFC > EAX< / span > < span class = cF0 > , < / span > < span class = cFC > EAX< / span > < span class = cF0 >
< a name = "l315" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > AX< / span > < span class = cF0 > , < / span > < span class = cFC > CS< / span > < span class = cF0 >
< a name = "l316" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > DS< / span > < span class = cF0 > , < / span > < span class = cFC > AX< / span > < span class = cF0 >
< a name = "l317" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > ES< / span > < span class = cF0 > , < / span > < span class = cFC > AX< / span > < span class = cF0 >
< a name = "l318" > < / a > < / span > < span class = cF1 > SHL< / span > < span class = cF0 > < / span > < span class = cFC > EAX< / span > < span class = cF0 > , < / span > < span class = cFE > 4< / span > < span class = cF0 >
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< a name = "l319" > < / a >
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< a name = "l320" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cF9 > U32< / span > < span class = cF0 > [< / span > < span class = cFD > MEM_BOOT_BASE< / span > < span class = cF0 > ], < / span > < span class = cFC > EAX< / span > < span class = cF0 >
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< a name = "l321" > < / a >
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< a name = "l322" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > DX< / span > < span class = cF0 > , < / span > < span class = cFC > CS< / span > < span class = cF0 >
< a name = "l323" > < / a > < / span > < span class = cF1 > SUB< / span > < span class = cF0 > < / span > < span class = cFC > DX< / span > < span class = cF0 > , < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (< / span > < span class = cF9 > CBinFile< / span > < span class = cF0 > ) / < / span > < span class = cFE > 16< / span > < span class = cF0 >
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< a name = "l324" > < / a > #< / span > < span class = cF1 > assert< / span > < span class = cF0 > !(< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF9 > CBinFile< / span > < span class = cF7 > )< / span > < span class = cF0 > & < / span > < span class = cFE > 0xF< / span > < span class = cF0 > )
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< a name = "l325" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > GS< / span > < span class = cF0 > , < / span > < span class = cFC > DX< / span > < span class = cF0 >
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< a name = "l326" > < / a >
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< a name = "l327" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > EDX< / span > < span class = cF0 > , < / span > < span class = cFC > EAX< / span > < span class = cF0 >
< a name = "l328" > < / a > < / span > < span class = cF1 > ADD< / span > < span class = cF0 > < / span > < span class = cFC > EDX< / span > < span class = cF0 > , < / span > < span class = cF9 > U32< / span > < span class = cF0 > < / span > < span class = cFC > GS< / span > < span class = cF0 > :[< / span > < span class = cF9 > CBinFile< / span > < span class = cF0 > .patch_table_offset]
< a name = "l329" > < / a > < / span > < span class = cF1 > SUB< / span > < span class = cF0 > < / span > < span class = cFC > EDX< / span > < span class = cF0 > , < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (< / span > < span class = cF9 > CBinFile< / span > < span class = cF0 > )
< a name = "l330" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cF9 > U32< / span > < span class = cF0 > [< / span > < span class = cFD > SYS_BOOT_PATCH_TABLE_BASE< / span > < span class = cF0 > ], < / span > < span class = cFC > EDX< / span > < span class = cF0 >
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< a name = "l331" > < / a >
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< a name = "l332" > < / a > < / span > < span class = cF1 > ADD< / span > < span class = cF0 > < / span > < span class = cF9 > U32< / span > < span class = cF0 > [GDT_BOOT_DS+< / span > < span class = cFE > 2< / span > < span class = cF0 > ], < / span > < span class = cFC > EAX< / span > < span class = cF0 >
< a name = "l333" > < / a > < / span > < span class = cF1 > ADD< / span > < span class = cF0 > < / span > < span class = cF9 > U32< / span > < span class = cF0 > [GDT_BOOT_CS+< / span > < span class = cFE > 2< / span > < span class = cF0 > ], < / span > < span class = cFC > EAX< / span > < span class = cF0 >
< a name = "l334" > < / a > < / span > < span class = cF1 > ADD< / span > < span class = cF0 > < / span > < span class = cFC > EAX< / span > < span class = cF0 > , < / span > < span class = cF9 > I32< / span > < span class = cF0 > < / span > < span class = cFD > SYS_GDT< / span > < span class = cF0 >
< a name = "l335" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cF9 > U32< / span > < span class = cF0 > [< / span > < span class = cFD > SYS_GDT_PTR< / span > < span class = cF0 > + < / span > < span class = cF9 > CSysLimitBase< / span > < span class = cF0 > .base], < / span > < span class = cFC > EAX< / span > < span class = cF0 >
< a name = "l336" > < / a > < / span > < span class = cF1 > LGDT< / span > < span class = cF0 > < / span > < span class = cF9 > U32< / span > < span class = cF0 > [< / span > < span class = cFD > SYS_GDT_PTR< / span > < span class = cF0 > ]
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< a name = "l337" > < / a >
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< a name = "l338" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > EAX< / span > < span class = cF0 > , < / span > < span class = cF3 > SYS_START_CR0< / span > < span class = cF0 >
< a name = "l339" > < / a > < / span > < span class = cF1 > MOV_CR0_EAX< / span > < span class = cF0 >
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< a name = "l340" > < / a >
< a name = "l341" > < / a > < / span > < span class = cF2 > /* The assembler doesn't support far jumps so< / span > < span class = cF0 >
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< a name = "l342" > < / a > < / span > < span class = cF2 > we hand code it.< / span > < span class = cF0 > < / span > < span class = cF2 > 16-bit code is not important< / span > < span class = cF0 >
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< a name = "l343" > < / a > < / span > < span class = cF2 > enough to fully implement in the assembler.< / span > < span class = cF0 >
< a name = "l344" > < / a >
< a name = "l345" > < / a > < / span > < span class = cF2 > To complete the switch to 32-bit mode, we have to load< / span > < span class = cF0 >
< a name = "l346" > < / a > < / span > < span class = cF2 > the code segment with a far jump.< / span > < span class = cF0 >
< a name = "l347" > < / a > < / span > < span class = cF2 > */< / span > < span class = cF0 >
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< a name = "l348" > < / a > < / span > < span class = cF1 > DU8< / span > < span class = cF0 > < / span > < span class = cFE > 0x66< / span > < span class = cF0 > , < / span > < span class = cFE > 0xEA< / span > < span class = cF0 > ; < / span > < span class = cF2 > //JMP CGDT.boot_cs:CORE0_32BIT_INIT< / span > < span class = cF0 >
< a name = "l349" > < / a > < / span > < span class = cF1 > DU32< / span > < span class = cF0 > < / span > < span class = cFD > CORE0_32BIT_INIT< / span > < span class = cF0 > ;
< a name = "l350" > < / a > < / span > < span class = cF1 > DU16< / span > < span class = cF0 > < / span > < span class = cF9 > CGDT< / span > < span class = cF0 > .boot_cs;
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< a name = "l351" > < / a > #< / span > < span class = cF1 > assert< / span > < span class = cF0 > $ + < / span > < span class = cFE > 16< / span > < span class = cF0 > < = < / span > < span class = cFE > 0xFFFF< / span > < span class = cF0 >
< a name = "l352" > < / a > }
< / span > < / pre > < / body >
< / html >
