From 034dd79f432158dbe19429b353ce55f0b80a4792 Mon Sep 17 00:00:00 2001 From: Ivan Baravy Date: Sun, 14 Jan 2024 01:39:36 +0000 Subject: [PATCH] Switch to the unified (BIOS and UEFI) kernel image The initial patch by bzt with my minor edits. git-svn-id: svn://kolibrios.org@9958 a494cfbc-eb01-0410-851d-a64ba20cac60 --- data/Tupfile.lua | 2 +- kernel/trunk/Tupfile.lua | 10 +-- kernel/trunk/boot/bootcode.inc | 34 ++++++++++ kernel/trunk/boot/bootstr.inc | 41 +++++++----- kernel/trunk/{bootbios.asm => bootbios.inc} | 66 ++++++++----------- .../trunk/bootloader/uefi4kos/uefi32kos.asm | 9 +-- .../trunk/bootloader/uefi4kos/uefi64kos.asm | 13 ++-- kernel/trunk/const.inc | 23 +++++-- kernel/trunk/core/apic.inc | 4 +- kernel/trunk/data32.inc | 6 +- kernel/trunk/init.inc | 20 +----- kernel/trunk/kernel.asm | 48 ++------------ kernel/trunk/video/cursors.inc | 2 - 13 files changed, 132 insertions(+), 146 deletions(-) rename kernel/trunk/{bootbios.asm => bootbios.inc} (64%) diff --git a/data/Tupfile.lua b/data/Tupfile.lua index bead320a01..d4fe63fe4e 100644 --- a/data/Tupfile.lua +++ b/data/Tupfile.lua @@ -930,7 +930,7 @@ raw_files = { {"EFI/BOOT/BOOTIA32.EFI", "../kernel/trunk/bootloader/uefi4kos/bootia32.efi"}, {"EFI/KOLIBRIOS/KOLIBRI.IMG", "kolibri.img"}, {"EFI/KOLIBRIOS/KOLIBRI.INI", "../kernel/trunk/bootloader/uefi4kos/kolibri.ini"}, - {"EFI/KOLIBRIOS/KOLIBRI.KRN", "../kernel/trunk/kolibri.krn"} + {"EFI/KOLIBRIOS/KOLIBRI.KRN", "../kernel/trunk/kernel.mnt.ext_loader"} } for i,v in ipairs(img_files) do diff --git a/kernel/trunk/Tupfile.lua b/kernel/trunk/Tupfile.lua index 6b3f809d57..432f079b25 100644 --- a/kernel/trunk/Tupfile.lua +++ b/kernel/trunk/Tupfile.lua @@ -1,9 +1,5 @@ if tup.getconfig("NO_FASM") ~= "" then return end tup.rule("echo lang fix " .. ((tup.getconfig("LANG") == "") and "en" or tup.getconfig("LANG")) .. " > %o", {"lang.inc"}) -tup.rule({"bootbios.asm", extra_inputs = {"lang.inc"}}, "fasm %f %o ", "bootbios.bin") -tup.rule({"bootbios.asm", extra_inputs = {"lang.inc"}}, "fasm %f %o -dextended_primary_loader=1", "bootbios.bin.ext_loader") -tup.rule({"bootbios.asm", extra_inputs = {"lang.inc"}}, "fasm %f %o -dpretest_build=1", "bootbios.bin.pretest") -tup.rule({"kernel.asm", extra_inputs = {"bootbios.bin", "lang.inc"}}, "fasm -m 65536 %f %o " .. tup.getconfig("KERPACK_CMD"), "kernel.mnt") -tup.rule({"kernel.asm", extra_inputs = {"bootbios.bin.ext_loader", "lang.inc"}}, "fasm -m 131072 %f %o -s %o.fas -dextended_primary_loader=1" .. tup.getconfig("KERPACK_CMD"), {"kernel.mnt.ext_loader", extra_outputs = {"kernel.mnt.ext_loader.fas"}}) -tup.rule({"kernel.asm", extra_inputs = {"bootbios.bin.pretest", "lang.inc"}}, "fasm -m 65536 %f %o -dpretest_build=1 -ddebug_com_base=0xe9", "kernel.mnt.pretest") -tup.rule({"kernel.asm", extra_inputs = {"lang.inc"}}, "fasm -m 65536 %f %o -dUEFI=1 -dextended_primary_loader=1", "kolibri.krn") +tup.rule({"kernel.asm", extra_inputs = {"lang.inc"}}, "fasm -m 131072 %f %o " .. tup.getconfig("KERPACK_CMD"), "kernel.mnt") +tup.rule({"kernel.asm", extra_inputs = {"lang.inc"}}, "fasm -m 131072 %f %o -dextended_primary_loader=1" .. tup.getconfig("KERPACK_CMD"), "kernel.mnt.ext_loader") +tup.rule({"kernel.asm", extra_inputs = {"lang.inc"}}, "fasm -m 131072 %f %o -dpretest_build=1 -ddebug_com_base=0xe9", "kernel.mnt.pretest") diff --git a/kernel/trunk/boot/bootcode.inc b/kernel/trunk/boot/bootcode.inc index b7977dc681..4361b4b82f 100644 --- a/kernel/trunk/boot/bootcode.inc +++ b/kernel/trunk/boot/bootcode.inc @@ -480,6 +480,40 @@ sayerr: apm_end: _setcursor d80x25_top_num, 0 +; --------------- ACPI --------------------- +ACPI_LO_RSDP_WINDOW_END = 0x000A0000 +ACPI_HI_RSDP_WINDOW_START = 0x000E0000 + +acpi: + xor eax, eax + mov [es:BOOT_LO.devicesdat_data], eax + mov [es:BOOT_LO.devicesdat_size], eax + mov [es:BOOT_LO.acpi_rsdp], eax + push ds + mov ds, ax + mov ax, word [40Eh] + add ax, 64 +.check: + mov ds, ax + cmp [ds:0], dword 'RSD ' + jne .next + cmp [ds:4], dword 'PTR ' + jne .next + shl eax, 4 + mov [es:BOOT_LO.acpi_rsdp], eax + jmp .end +.next: + inc ax + ; skip VRAM and ROM area A0000h to E0000h + cmp ax, (ACPI_LO_RSDP_WINDOW_END shr 4) + jne @f + add ax, ((ACPI_HI_RSDP_WINDOW_START - ACPI_LO_RSDP_WINDOW_END) shr 4) +@@: ; end of 1Mb? + or ax, ax + jnz .check +.end: + pop ds + if ~ defined extended_primary_loader ;CHECK current of code cmp [cfgmanager.loader_block], -1 diff --git a/kernel/trunk/boot/bootstr.inc b/kernel/trunk/boot/bootstr.inc index ba2d7fcf23..1fd52d5267 100644 --- a/kernel/trunk/boot/bootstr.inc +++ b/kernel/trunk/boot/bootstr.inc @@ -10,30 +10,39 @@ $Revision$ ; boot data: common strings (for all languages) macro line_full_top { - db 201 - times 78 db 205 - db 187 + db 201 + times 78 db 205 + db 187 } macro line_full_bottom { - db 200 - times 78 db 205 - db 188 + db 200 + times 78 db 205 + db 188 } macro line_half { - db 186,' ' - times 76 db 0xc4 - db ' ',186 + db 186,' ' + times 76 db 0xc4 + db ' ', 186 } macro line_space { - db 186 - times 78 db 32 - db 186 + db 186 + times 78 db 32 + db 186 } d80x25_top: line_full_top - cur_line_pos = 72 - ; this signature will be replaced with revision number (in kernel.asm) - store dword '****' at d80x25_top + cur_line_pos +if __REV__ > 0 + cur_line_pos = 75 + store byte ' ' at d80x25_top+cur_line_pos+1 + rev_var = __REV__ + while rev_var > 0 + store byte rev_var mod 10 + '0' at d80x25_top+cur_line_pos + cur_line_pos = cur_line_pos - 1 + rev_var = rev_var / 10 + end while + store byte ' ' at d80x25_top+cur_line_pos + store dword ' SVN' at d80x25_top+cur_line_pos-4 +end if space_msg: line_space @@ -42,7 +51,7 @@ verstr: ; version string db 186,32 repeat 78 - load a byte from version+%-1 + load a byte from kernel_header.signature+%-1 if a = 13 break end if diff --git a/kernel/trunk/bootbios.asm b/kernel/trunk/bootbios.inc similarity index 64% rename from kernel/trunk/bootbios.asm rename to kernel/trunk/bootbios.inc index ec5d944b80..beb3d2f204 100644 --- a/kernel/trunk/bootbios.asm +++ b/kernel/trunk/bootbios.inc @@ -1,14 +1,16 @@ -;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; -;; ;; -;; 16 BIT ENTRY FROM BOOTSECTOR ;; -;; ;; -;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; ;; +;; Copyright (C) KolibriOS team 2004-2024. All rights reserved. ;; +;; Distributed under terms of the GNU General Public License ;; +;; ;; +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; -include 'macros.inc' -include 'struct.inc' -include 'lang.inc' -include 'encoding.inc' -include 'const.inc' +$Revision$ +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; ;; +;; 16 BIT ENTRY FROM BOOTSECTOR ;; +;; ;; +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; os_code = code_l - tmp_gdt if defined pretest_build @@ -18,35 +20,31 @@ else end if use16 - org 0x0 - jmp start_of_code +org 0 + ; struct kernel_header + jmp start_of_code ; jump + db 'KolibriOS ' ; signature + db 'v0.7.7.0+ ',13,10,13,10,0 ; version + dd B32-KERNEL_BASE ; offset of the kernel's 32-bit entry point -if lang eq sp -include "kernelsp.inc" ; spanish kernel messages -else if lang eq et -version db 'Kolibri OS versioon 0.7.7.0+ ',13,10,13,10,0 -else -version db 'Kolibri OS version 0.7.7.0+ ',13,10,13,10,0 -end if - -include "boot/bootstr.inc" ; language-independent boot messages +include "boot/bootstr.inc" ; language-independent boot messages include "boot/preboot.inc" if lang eq ge -include "boot/bootge.inc" ; german system boot messages +include "boot/bootge.inc" ; german system boot messages else if lang eq sp -include "boot/bootsp.inc" ; spanish system boot messages +include "boot/bootsp.inc" ; spanish system boot messages else if lang eq ru -include "boot/bootru.inc" ; russian system boot messages -include "boot/ru.inc" ; Russian font +include "boot/bootru.inc" ; russian system boot messages +include "boot/ru.inc" ; Russian font else if lang eq et -include "boot/bootet.inc" ; estonian system boot messages -include "boot/et.inc" ; Estonian font +include "boot/bootet.inc" ; estonian system boot messages +include "boot/et.inc" ; Estonian font else -include "boot/booten.inc" ; english system boot messages +include "boot/booten.inc" ; english system boot messages end if -include "boot/bootcode.inc" ; 16 bit system boot code +include "boot/bootcode.inc" ; 16 bit system boot code include "bus/pci/pci16.inc" include "detect/biosdisk.inc" @@ -100,7 +98,7 @@ align 8 tmp_gdt: dw 23 - dd tmp_gdt+0x10000 + dd tmp_gdt+KERNEL_BASE dw 0 code_l: dw 0xffff @@ -118,11 +116,5 @@ code_l: include "data16.inc" if ~ lang eq sp -diff16 "end of bootcode",0,$+0x10000 +diff16 "end of bootcode",0,$+KERNEL_BASE end if - -use32 -org $+0x10000 - -align 4 -B32: diff --git a/kernel/trunk/bootloader/uefi4kos/uefi32kos.asm b/kernel/trunk/bootloader/uefi4kos/uefi32kos.asm index 4ce20c3744..ae6e0baf1e 100644 --- a/kernel/trunk/bootloader/uefi4kos/uefi32kos.asm +++ b/kernel/trunk/bootloader/uefi4kos/uefi32kos.asm @@ -1,6 +1,6 @@ ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; -;; Copyright (C) KolibriOS team 2020-2021. All rights reserved. ;; +;; Copyright (C) KolibriOS team 2020-2024. All rights reserved. ;; ;; Distributed under terms of the GNU General Public License ;; ;; Version 2, or (at your option) any later version. ;; ;; ;; @@ -24,8 +24,6 @@ GOP_BUFFER_SIZE = 0x100 LIP_BUFFER_SIZE = 0x100 FILE_BUFFER_SIZE = 0x1000 -KERNEL_BASE = 0x10000 -RAMDISK_BASE = 0x100000 MAX_FILE_SIZE = 0x10000000 CODE_32_SELECTOR = 8 @@ -650,7 +648,10 @@ main: and eax, not CR4_PAE mov cr4, eax - push KERNEL_BASE + mov eax, KERNEL_BASE + ; add the 32-bit entry point + add eax, [eax+kernel_header.b32_offset] + push eax retn .error: diff --git a/kernel/trunk/bootloader/uefi4kos/uefi64kos.asm b/kernel/trunk/bootloader/uefi4kos/uefi64kos.asm index 74b38245e6..85080f669d 100644 --- a/kernel/trunk/bootloader/uefi4kos/uefi64kos.asm +++ b/kernel/trunk/bootloader/uefi4kos/uefi64kos.asm @@ -1,6 +1,6 @@ ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; -;; Copyright (C) KolibriOS team 2020-2021. All rights reserved. ;; +;; Copyright (C) KolibriOS team 2020-2024. All rights reserved. ;; ;; Distributed under terms of the GNU General Public License ;; ;; Version 2, or (at your option) any later version. ;; ;; ;; @@ -28,8 +28,6 @@ PROTOCOL_HANDLERS_BUFFER_SIZE = 0x100 FILE_BUFFER_SIZE = 0x1000 KERNEL_TRAMPOLINE = 0x8f80 ; just before BOOT_LO -KERNEL_BASE = 0x10000 -RAMDISK_BASE = 0x100000 MAX_FILE_SIZE = 0x10000000 CODE_32_SELECTOR = 8 @@ -55,7 +53,7 @@ proc load_file _root, _name, _buffer, _size, _fatal r11, EFI_FILE_MODE_READ, 0 test eax, eax jz @f - mov [_size], 0 + mov [_size], 0 cmp [_fatal], 1 jnz .done mov rcx, [rbx+EFI_SYSTEM_TABLE.ConOut] @@ -297,7 +295,7 @@ proc read_options_from_config sfsp_interface test eax, eax jz @f - mov rcx, [rbx+EFI_SYSTEM_TABLE.ConOut] + mov rcx, [rbx+EFI_SYSTEM_TABLE.ConOut] fstcall [rcx+EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.OutputString], rcx, \ msg_error_lip_dev_sfsp jmp $ @@ -1010,7 +1008,10 @@ org KERNEL_TRAMPOLINE and eax, not CR4_PAE mov cr4, eax - push KERNEL_BASE + mov eax, KERNEL_BASE + ; add the 32-bit entry point + add eax, [eax+kernel_header.b32_offset] + push eax retn align 16 diff --git a/kernel/trunk/const.inc b/kernel/trunk/const.inc index 7d568b31a7..94a851fc66 100644 --- a/kernel/trunk/const.inc +++ b/kernel/trunk/const.inc @@ -1,6 +1,6 @@ ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; -;; Copyright (C) KolibriOS team 2004-2023. All rights reserved. ;; +;; Copyright (C) KolibriOS team 2004-2024. All rights reserved. ;; ;; Distributed under terms of the GNU General Public License ;; ;; ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; @@ -218,6 +218,17 @@ struct TSS _io_map_1 rb 4096 ends +struct kernel_header + jump rb 3 ; jmp start_of_code + signature rb 10 ; 'KolibriOS ' + version rb 19 ; ASCII string + b32_offset dd ? ; offset of the 32-bit entry point in kernel binary + +; uefi4kos adds the kernel's load address to the offset above and jumps directly +; to 32-bit entry point, skipping the real mode code part. This way the same +; KERNEL.MNT file can be booted on BIOS as well as on UEFI. +ends + DRIVE_DATA_SIZE = 16 OS_BASE = 0x80000000 @@ -225,9 +236,9 @@ OS_BASE = 0x80000000 window_data = OS_BASE + 0x0001000 background_window = window_data + sizeof.WDATA -;CDDataBuf = OS_BASE + 0x0005000 - BOOT_VARS = 0x9000 +KERNEL_BASE = 0x10000 +RAMDISK_BASE = 0x100000 idts = OS_BASE + 0x000B100 WIN_STACK = OS_BASE + 0x000C000 @@ -248,11 +259,11 @@ MEM_AMOUNT = OS_BASE + 0x000FE8C SYS_SHUTDOWN = OS_BASE + 0x000FF00 -TMP_STACK_TOP = 0x007CC00 +TMP_STACK_TOP = 0x008CC00 -sys_proc = OS_BASE + 0x007E000 +sys_proc = OS_BASE + 0x008E000 -SLOT_BASE = OS_BASE + 0x0080000 +SLOT_BASE = OS_BASE + 0x0090000 VGABasePtr = OS_BASE + 0x00A0000 diff --git a/kernel/trunk/core/apic.inc b/kernel/trunk/core/apic.inc index d36c0ec32d..b961abe3ab 100644 --- a/kernel/trunk/core/apic.inc +++ b/kernel/trunk/core/apic.inc @@ -55,15 +55,13 @@ APIC_init: cmp [acpi_lapic_base], 0 jz .no_apic -; non-UEFI loaders don't load DEVICES.DAT and don't initialize [acpi_dev_size] -if defined UEFI +; non-UEFI loaders don't load DEVICES.DAT but they zero out [acpi_dev_size] cmp [acpi_dev_size], 0 jz @f stdcall map_io_mem, [acpi_dev_data], [acpi_dev_size], PG_SWR mov [acpi_dev_data], eax jmp .loaded @@: -end if stdcall load_file, dev_data_path test eax, eax diff --git a/kernel/trunk/data32.inc b/kernel/trunk/data32.inc index 71745594f2..023cceafff 100644 --- a/kernel/trunk/data32.inc +++ b/kernel/trunk/data32.inc @@ -519,9 +519,9 @@ diff16 "end of .bss",0,$ end if ; check if kernel fits memmap -assert $-OS_BASE+0x1000 < TMP_STACK_TOP +assert $-OS_BASE+PAGE_SIZE < TMP_STACK_TOP -org (OS_BASE+0x0100000) +org (OS_BASE + RAMDISK_BASE) ; Currently size of memory allocated for the ramdisk is fixed. ; This should be revisited when/if memory map would become more dynamic. @@ -545,4 +545,4 @@ sys_pgmap: rb 1024*1024/8 -CDDataBuf: rb 0x1000 \ No newline at end of file +CDDataBuf: rb 0x1000 diff --git a/kernel/trunk/init.inc b/kernel/trunk/init.inc index f47683ef0b..2176eab950 100644 --- a/kernel/trunk/init.inc +++ b/kernel/trunk/init.inc @@ -410,8 +410,6 @@ proc test_cpu ret endp -ACPI_HI_RSDP_WINDOW_START = 0x000E0000 -ACPI_HI_RSDP_WINDOW_END = 0x00100000 ACPI_RSDP_CHECKSUM_LENGTH = 20 proc acpi_locate_tables uses ebx esi edi @@ -475,27 +473,11 @@ acpi_locate: push ebx push edi -if defined UEFI - ; UEFI loader knows where RSDP is mov ebx, [BOOT_LO.acpi_rsdp] test ebx, ebx jz .done + mov edi, ebx call .check -else - movzx ebx, word [0x40E] - shl ebx, 4 - lea ecx, [ebx+1024] - call .check - - test ebx, ebx - jz @F - jmp .done - -@@: - mov ebx, ACPI_HI_RSDP_WINDOW_START - mov edi, ACPI_HI_RSDP_WINDOW_END - call .check -end if .done: mov [acpi_rsdp_base - OS_BASE], ebx test ebx, ebx diff --git a/kernel/trunk/kernel.asm b/kernel/trunk/kernel.asm index a6139d450f..2e092ae666 100644 --- a/kernel/trunk/kernel.asm +++ b/kernel/trunk/kernel.asm @@ -1,6 +1,6 @@ ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; -;; Copyright (C) KolibriOS team 2004-2022. All rights reserved. +;; Copyright (C) KolibriOS team 2004-2024. All rights reserved. ;; Kernel programmers are acknowledged in CREDITS.TXT ;; ;; Data in this file was originally part of MenuetOS project which is @@ -36,7 +36,8 @@ USE_COM_IRQ = 1 ; make irq 3 and irq 4 available for PCI devices VESA_1_2_VIDEO = 0 ; enable vesa 1.2 bank switch functions ; Enabling the next line will enable serial output console -;debug_com_base = 0x3f8 ; 0x3f8 is com1, 0x2f8 is com2, 0x3e8 is com3, 0x2e8 is com4, no irq's are used +;debug_com_base = 0x3f8 ; 0x3f8 is com1, 0x2f8 is com2, 0x3e8 is com3, + ; 0x2e8 is com4, no irq's are used include "proc32.inc" include "kglobals.inc" @@ -89,49 +90,12 @@ pci_data_sel = pci_data_32-gdts ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; -; In bios boot mode the kernel code below is appended to bootbios.bin file. ; That is a loading and initialization code that also draws the blue screen -; menu with svn revision number near top right corner of the screen. This fasm -; preprocessor code searches for '****' signature inside bootbios.bin and -; places revision number there. -if ~ defined UEFI - bootbios: - if defined extended_primary_loader - file 'bootbios.bin.ext_loader' - else if defined pretest_build - file 'bootbios.bin.pretest' - else - file 'bootbios.bin' - end if - if __REV__ > 0 - cur_pos = 0 - cnt = 0 - repeat $ - bootbios - load a byte from % - if a = '*' - cnt = cnt + 1 - else - cnt = 0 - end if - if cnt = 4 - cur_pos = % - 1 - break - end if - end repeat - store byte ' ' at cur_pos + 1 - rev_var = __REV__ - while rev_var > 0 - store byte rev_var mod 10 + '0' at cur_pos - cur_pos = cur_pos - 1 - rev_var = rev_var / 10 - end while - store byte ' ' at cur_pos - store dword ' SVN' at cur_pos - 4 - end if -end if +; menu with svn revision number near top right corner of the screen. +include "bootbios.inc" use32 -org $+0x10000 +org $+KERNEL_BASE align 4 B32: diff --git a/kernel/trunk/video/cursors.inc b/kernel/trunk/video/cursors.inc index 369f849eab..019c7a372a 100644 --- a/kernel/trunk/video/cursors.inc +++ b/kernel/trunk/video/cursors.inc @@ -1389,7 +1389,6 @@ init_display: mov [edi + display_t.cr_list.next], ecx mov [edi + display_t.cr_list.prev], ecx -if ~defined UEFI cmp [SCR_MODE], word 0x12 jne .not_vga ; TODO @@ -1409,7 +1408,6 @@ if ~defined UEFI jmp .set .not_ega: -end if mov ebx, restore_32 mov ecx, move_cursor_32 mov edx, Vesa20_putpixel32_new