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< ! DOCTYPE HTML >
< html >
< head >
< meta http - equiv = " Content-Type " content = " text/html;charset=US-ASCII " >
< meta name = " generator " content = " ZealOS V0.05 " >
< style type = " text/css " >
body { background - color : # 000000 ; }
. cF0 { color : # ffffff ; background - color : # 000000 ; }
. cF1 { color : # 3465 a4 ; background - color : # 000000 ; }
. cF2 { color : # 4e9 a06 ; background - color : # 000000 ; }
. cF3 { color : # 06 989 a ; background - color : # 000000 ; }
. cF4 { color : # a24444 ; background - color : # 000000 ; }
. cF5 { color : # 75507 b ; background - color : # 000000 ; }
. cF6 { color : # ce982f ; background - color : # 000000 ; }
. cF7 { color : # bcc0b9 ; background - color : # 000000 ; }
. cF8 { color : # 555753 ; background - color : # 000000 ; }
. cF9 { color : # 729f cf ; background - color : # 000000 ; }
. cFA { color : # 82 bc49 ; background - color : # 000000 ; }
. cFB { color : # 34e2 e2 ; 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.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.html#l1 " > < span class = cF4 > CosmiC < / span > < / a > < span class = cF2 > at < / span > < a href = " https://tomawezome.github.io/ZealOS/Kernel/KMain.html#l151 " > < 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.html#l451 " > < 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.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.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.html#l547"><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 > & quot ; SYS_COMPILE_TIME : : DU64 0 x % X ; & quot ; < / span > < span class = cF0 > , < / span > < span class = cF5 > Now < / span > < span class = cF0 > ) ; < / span > < span class = cF2 > //See </span><span class=cF4><u>IDEBootDVDProbe</span><span class=cF0>
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< a name = " l26 " > < / a > < / u > < / span > < span class = cF7 > } < / span > < span class = cF0 > ;
< 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 > ) & lt ; < / 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.html#l395"><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 > ;
< 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.html#l1"><span class=cF4>Charter</span></a><span class=cF2> says just ring0.</span><span class=cF0>
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< 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.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 > & quot ; SCREEN_WIDTH : < / span > < span class = cF0 > < / span > < span class = cF6 > DU16 < / span > < span class = cF0 > < / span > < span class = cF6 > % d ; & quot ; < / span > < span class = cF0 >
< a name = " l68 " > < / a > < / span > < span class = cF6 > & quot ; SCREEN_HEIGHT : DU16 < / span > < span class = cF0 > < / span > < span class = cF6 > % d ; & quot ; < / span > < span class = cF0 > , kernel_config - & gt ; screen_width , kernel_config - & gt ; 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.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.html#l84"><span class=cF4>BootHD</span></a><span class=cF2>, </span><a href="https://tomawezome.github.io/ZealOS/System/Boot/BootDVD.html#l175"><span class=cF4>BootDVD</span></a><span class=cF2>, & </span><a href="https://tomawezome.github.io/ZealOS/System/Boot/BootRAM.html#l46"><span class=cF4>BootRAM</span></a><span class=cF2>.)</span><span class=cF0>
2021-07-04 23:11:34 +01:00
< 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 >
< 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.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.html#l84"><span class=cF4>BootHD</span></a><span class=cF2>, </span><a href="https://tomawezome.github.io/ZealOS/System/Boot/BootDVD.html#l175"><span class=cF4>BootDVD</span></a><span class=cF2> & </span><a href="https://tomawezome.github.io/ZealOS/System/Boot/BootRAM.html#l46"><span class=cF4>BootRAM</span></a><span class=cF2>.</span><span class=cF0>
< 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
2021-07-03 05:07:57 +01:00
< a name = " l81 " > < / a > GET_IP : < / span > < span class = cF1 > POP < / span > < span class = cF0 > < / span > < span class = cFC > BX < / span > < span class = cF0 >
2021-07-04 23:11:34 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< a name = " l89 " > < / a >
< a name = " l90 " > < / a > @ @ 04 : < / span > < span class = cF1 > STI < / span > < span class = cF0 >
2021-07-04 23:11:34 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< 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>
2021-07-04 23:11:34 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< a name = " l100 " > < / a >
< a name = " l101 " > < / a > < / span > < span class = cF2 > //Get VBE implementation information</span><span class=cF0>
2021-07-04 23:11:34 +01:00
< 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>
2021-07-03 05:07:57 +01:00
< 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 & lt ; - Temporary storage for mode information < / span > < span class = cF0 >
< a name = " l115 " > < / a > < / span > < span class = cF2 > CX & lt ; - Mode number < / span > < span class = cF0 >
< a name = " l116 " > < / a > < / span > < span class = cF2 > DX & lt ; - mode array < / span > < span class = cF0 >
< a name = " l117 " > < / a > < / span > < span class = cF2 > GS & lt ; - Segment for video modes list < / span > < span class = cF0 >
< a name = " l118 " > < / a > < / span > < span class = cF2 > SI & lt ; - 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>
2021-07-04 23:11:34 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< a name = " l126 " > < / a >
< a name = " l127 " > < / a > @ @ 06 : < / span > < span class = cF2 > //Loop through all the mode numbers</span><span class=cF0>
2021-07-04 23:11:34 +01:00
< 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
2021-07-03 05:07:57 +01:00
< a name = " l131 " > < / a >
2021-07-04 23:11:34 +01:00
< 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>
2021-07-03 05:07:57 +01:00
< a name = " l133 " > < / a >
2021-07-04 23:11:34 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< a name = " l139 " > < / a > < / span > < span class = cF2 > //Get mode information for mode number</span><span class=cF0>
2021-07-04 23:11:34 +01:00
< 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>
2021-07-03 05:07:57 +01:00
< a name = " l145 " > < / a >
< a name = " l146 " > < / a > < / span > < span class = cF2 > //filter everything but 32-bit color</span><span class=cF0>
2021-07-04 23:11:34 +01:00
< 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
2021-07-03 05:07:57 +01:00
< a name = " l150 " > < / a >
< a name = " l151 " > < / a > < / span > < span class = cF2 > //Check if the mode is actually supported</span><span class=cF0>
2021-07-04 23:11:34 +01:00
< 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
2021-07-03 05:07:57 +01:00
< 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>
2021-07-04 23:11:34 +01:00
< 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>
2021-07-03 05:07:57 +01:00
< a name = " l163 " > < / a > < / span > < span class = cF2 > //Copy information about this mode into an element of the mode array</span><span class=cF0>
2021-07-04 23:11:34 +01:00
< 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
2021-07-03 05:07:57 +01:00
< a name = " l168 " > < / a >
2021-07-04 23:11:34 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< a name = " l171 " > < / a >
2021-07-04 23:11:34 +01:00
< 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>
2021-07-03 05:07:57 +01:00
< a name = " l176 " > < / a >
2021-07-04 23:11:34 +01:00
< 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>
2021-07-03 05:07:57 +01:00
< a name = " l179 " > < / a >
< a name = " l180 " > < / a > < / span > < span class = cF2 > //Check if width and height match</span><span class=cF0>
2021-07-04 23:11:34 +01:00
< 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
2021-07-03 05:07:57 +01:00
< 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>
2021-07-04 23:11:34 +01:00
< 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
2021-07-03 05:07:57 +01:00
< 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>
2021-07-04 23:11:34 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< 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 >
2021-07-04 23:11:34 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< a name = " l201 " > < / a > < / span > < span class = cF2 > //Get mode infomration for the mode we want</span><span class=cF0>
2021-07-04 23:11:34 +01:00
< 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>
2021-07-03 05:07:57 +01:00
< 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>
2021-07-04 23:11:34 +01:00
< 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
2021-07-03 05:07:57 +01:00
< a name = " l216 " > < / a >
2021-07-04 23:11:34 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< 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>
2021-07-04 23:11:34 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< 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>
2021-07-04 23:11:34 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< 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 >
2021-07-04 23:11:34 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< a name = " l241 " > < / a >
< a name = " l242 " > < / a > < / span > < span class = cF2 > //Get E820 memory map.</span><span class=cF0>
2021-07-04 23:11:34 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< a name = " l248 " > < / a > @ @ 15 : < / span > < span class = cF1 > PUSH < / span > < span class = cF0 > < / span > < span class = cFC > CX < / span > < span class = cF0 >
2021-07-04 23:11:34 +01:00
< 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>
2021-07-03 05:07:57 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< a name = " l270 " > < / a >
< a name = " l271 " > < / a > < / span > < span class = cF2 > //Find max of E820 to set mapped space.</span><span class=cF0>
2021-07-04 23:11:34 +01:00
< 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 > ]
2021-07-04 23:11:34 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< a name = " l292 " > < / a >
< a name = " l293 " > < / a > < / span > < span class = cF2 > //Get PCI Bus Info</span><span class=cF0>
2021-07-04 23:11:34 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< a name = " l309 " > < / a >
2021-07-04 23:11:34 +01:00
< 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 > ]
< 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.html#l84"><span class=cF4>BootHD</span></a><span class=cF2>, </span><a href="https://tomawezome.github.io/ZealOS/System/Boot/BootDVD.html#l175"><span class=cF4>BootDVD</span></a><span class=cF2>, & </span><a href="https://tomawezome.github.io/ZealOS/System/Boot/BootRAM.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 >
2021-07-03 05:07:57 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< 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 > & amp ; < / 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 >
2021-07-03 05:07:57 +01:00
< a name = " l326 " > < / a >
2021-07-04 23:11:34 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< a name = " l331 " > < / a >
2021-07-04 23:11:34 +01:00
< 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 >
2021-07-03 05:07:57 +01:00
< 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 > & lt ; = < / span > < span class = cFE > 0xFFFF < / span > < span class = cF0 >
< a name = " l352 " > < / a > }
< / span > < / pre > < / body >
< / html >
