Implement tracking of available physical pages

Co-authored-by: Pedro Valadés <perikiyoxd@gmail.com>
Co-committed-by: Pedro Valadés <perikiyoxd@gmail.com>

CMakeLists.txt

@@ -60,11 +60,10 @@ file(RELATIVE_PATH _PATH_PREFIX ${EXECTOS_BINARY_DIR} ${EXECTOS_SOURCE_DIR})
 add_compiler_flags(-D__RELFILE__="&__FILE__[__FILE__[0] == '.' ? sizeof \\\"${_PATH_PREFIX}\\\" - 1 : sizeof XTOS_SOURCE_DIR]")
 
 # Set the virtual disk image size (in MiB)
-set_disk_image_size(32)
+set_disk_image_size(48)
 
 # Build all subprojects
-add_subdirectory(bootdata)
+add_subdirectory(boot)
 add_subdirectory(drivers)
 add_subdirectory(sdk)
-add_subdirectory(xtldr)
 add_subdirectory(xtoskrnl)

CONTRIBUTING.md

@@ -9,8 +9,7 @@ porting drivers, fixing bugs, writing tests, creating documentation, or helping
 love the help.
 
 ## Wish List
-If you are looking for a way to contribute, but you are not sure where to start, check our [IDEAS](IDEAS.md) and
+If you are looking for a way to contribute, but you are not sure where to start, check our list of
-[KNOWN ISSUES](KNOWN_ISSUES.md) pages for suggestions. We try to keep them up to date. You can also check a list of
 [open issues](https://git.codingworkshop.eu.org/xt-sys/exectos/issues). If you find interesting task and you are serious
 about tackling one, feel free to contact us. We will be able to provide a more detailed information and suggestions
 towards getting started.

IDEAS.md

@@ -1,23 +0,0 @@
-## ExectOS Ideas
-This is a list of ideas that migh but not must be realized.
-
-### SDK
- - [ ] Currently XT Development Kit (XTDK) is a garbage. It should be cleaned up the way, it contains all structures
-       and definitions, as well as all routines that are exported and can be used by other components or software
-       dynamically linked. All other routines should be available as well in some form, as some libraries can share
-       code with others (eg. XTLDR calls routines exported by XTOSKRNL). This is partially done, as XTDK has been
-       cleaned up, but still there are routines used by XTLDR.
-
-### XTLDR
- - [ ] Rewrite memory mapping and paging support in bootloader to make it more flexible and architecture independent.
-       This should support paging levels, thus allowing to make a use of PML5 on modern AMD64 processors and increasing
-       the addressable virtual memory from 256TB to 128PB. This is partially done.
- - [ ] Implement editing boot menu entries directly from the boot menu. Changes should be runtime only (not stored on
-       disk).
-
-### XTOSKRNL
- - [ ] Implement mechanism for detecting CPU features and checking hardware requirements. If CPU does not meet
-       requirements, it should cause a kernel panic before any non-supported instruction is being used.
- - [ ] Finish framebuffer and terminal implementation. Initialization code is already prepared as well as routines for
-       clearing the screen and drawing single points. Terminal should be instantiable (should be able to create many
-       terminals and switch between them) and work on top of FB. It should define ANSI colors and scrollback buffer.

KNOWN_ISSUES.md

@@ -1,6 +0,0 @@
-## ExectOS Known Issues
-This is a list of well known bugs that exists in all master branch builds.
-
-### XTLDR
- - [ ] EFI Runtime Services are not mapped properly into higher half. They are mapped itself, but all pointers inside
-       that structure point to some physical address that is unavailable after paging is enabled.

README.md

@@ -57,16 +57,18 @@ ExectOS is in very early development stage, thus its requirements have been not
 design, it requires a modern EFI enabled hardware. It is not possible currently to boot ExectOS on a legacy BIOS.
 
 # Source structure
-| Directory   | Description                                              |
+| Directory        | Description                                                  |
-|-------------|----------------------------------------------------------|
+|------------------|--------------------------------------------------------------|
-| bootdata    | default configuration and data needed to boot XTOS       |
+| boot/bootdata    | default configuration and data needed to boot XTOS           |
-| drivers     | XT native drivers source code                            |
+| boot/bootsect    | boot sector code (MBR & VBR) initializing the boot process   |
-| sdk/cmake   | Host toolchain configuration and build-related functions |
+| boot/xtldr       | XTOS boot loader source code                                 |
-| sdk/xtdk    | XT Software Development Kit headers                      |
+| drivers          | XT native drivers source code                                |
-| services    | integral subsystems services source code                 |
+| sdk/cmake        | host toolchain configuration and build-related functions     |
-| subsystems  | environment subsystems source code                       |
+| sdk/firmware     | firmware enabling XTOS to boot on virtual machines           |
-| xtoskrnl    | XTOS kernel source code                                  |
+| sdk/xtdk         | XT Software Development Kit headers                          |
-| xtldr       | XTOS boot loader source code                             |
+| services         | integral subsystems services source code                     |
+| subsystems       | environment subsystems source code                           |
+| xtoskrnl         | XTOS kernel source code                                      |
 
 # Build
 XTOS can only be built using [XTchain](https://git.codingworkshop.eu.org/xt-sys/xtchain), a dedicated toolchain designed

boot/CMakeLists.txt

@@ -0,0 +1,3 @@
+add_subdirectory(bootdata)
+add_subdirectory(bootsect)
+add_subdirectory(xtldr)

boot/bootsect/CMakeLists.txt

@@ -0,0 +1,8 @@
+# XT Boot Sector
+PROJECT(BOOTSECT)
+
+add_definitions("-DARCH_ESP_SOURCE=\\\"${ARCH}/cpu.S\\\"")
+
+# Compile boot sectors
+compile_bootsector(mbrboot ${BOOTSECT_SOURCE_DIR}/mbrboot.S 0x7C00 Start)
+compile_bootsector(espboot ${BOOTSECT_SOURCE_DIR}/espboot.S 0x7C00 Start)

boot/bootsect/amd64/cpu.S

@@ -0,0 +1,144 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            boot/bootsect/amd64/cpu.S
+ * DESCRIPTION:     Low-level support for CPU initialization
+ * DEVELOPERS:      Aiken Harris <harraiken91@gmail.com>
+ */
+
+
+BuildPageMap:
+    /* Generate page map for first 1GB of memory */
+    pushaw
+    pushw %es
+    cld
+    movw $(0x1000 / 16), %ax
+    movw %ax, %es
+    xorw %di, %di
+    movl $(0x2000 | 0x07), %eax
+    stosl
+    xorl %eax, %eax
+    movw $1021, %cx
+    rep stosl
+    movw $(0x2000 / 16), %ax
+    movw %ax, %es
+    xorw %di, %di
+    movl $(0x3000 | 0x07), %eax
+    stosl
+    xorl %eax, %eax
+    movw $1021, %cx
+    rep stosl
+    movw $(0x3000 / 16), %ax
+    movw %ax, %es
+    xorw %di, %di
+    movw $512, %cx
+    movl $0x00000083, %eax
+.BuildPageMapLoop:
+    /* Identity map 512 pages of 2MB */
+    movl %eax, %es:(%di)
+    addl $2097152, %eax
+    addw $0x08, %di
+    loop .BuildPageMapLoop
+    popw %es
+    popaw
+    ret
+
+InitializeCpu:
+    /* Check if CPU supports CPUID, long mode and PAE */
+    pushal
+    pushfl
+    popl %eax
+    movl %eax, %ebx
+    xorl $0x00200000, %eax
+    pushl %eax
+    popfl
+    pushfl
+    popl %eax
+    cmpl %ebx, %eax
+    je CpuUnsupported
+    movl $0x01, %eax
+    cpuid
+    testl $0x40, %edx
+    jz CpuUnsupported
+    movl $0x80000000, %eax
+    cpuid
+    cmpl $0x80000000, %eax
+    jbe CpuUnsupported
+    movl $0x80000001, %eax
+    cpuid
+    testl $0x20000000, %edx
+    jz CpuUnsupported
+    popal
+    call LoadGdt
+    ret
+
+LoadGdt:
+    /* Load Global Descriptor Table */
+    lgdt .GdtPointer
+    ret
+
+RunStage2:
+    /* Switch to long mode and pass control to Stage 2 */
+    call BuildPageMap
+    call ParseExecutableHeader
+    xorl %edx, %edx
+    pushl %edx
+    pushl %eax
+    cli
+    xorw %ax, %ax
+    movw %ax, %ds
+    movw %ax, %es
+    movw %ax, %fs
+    movw %ax, %gs
+    movw %ax, %ss
+    movl %cr4, %eax
+    orl $0x00A0, %eax
+    movl %eax, %cr4
+    movl $0x00001000, %eax
+    movl %eax, %cr3
+    movl $0xC0000080, %ecx
+    rdmsr
+    orl $0x00000100, %eax
+    wrmsr
+    movl %cr0, %eax
+    orl $0x80000001, %eax
+    movl %eax, %cr0
+    ljmp $0x10, $.Stage2LongMode
+.code64
+.Stage2LongMode:
+    /* Set segments and stack, then jump to Stage 2 */
+    movw $0x18, %ax
+    movw %ax, %ds
+    movw %ax, %es
+    movw %ax, %ss
+    xorw %ax, %ax
+    movw %ax, %fs
+    movw %ax, %gs
+    popq %rax
+    xorq %rbx, %rbx
+    xorq %rcx, %rcx
+    xorq %rdx, %rdx
+    xorq %rsi, %rsi
+    xorq %rdi, %rdi
+    xorq %rbp, %rbp
+    jmp *%rax
+
+.code16
+.GdtDescriptor:
+    /* Global Descriptor Table */
+    .quad 0x0000000000000000
+    .quad 0x0000000000000000
+    .quad 0x00AF9A000000FFFF
+    .quad 0x00CF92000000FFFF
+    .quad 0x00009E000000FFFF
+    .quad 0x000092000000FFFF
+    .quad 0x00CF9B000000FFFF
+
+.GdtPointer:
+    /* Pointer to Global Descriptor Table */
+    .word .GdtPointer - .GdtDescriptor - 1
+    .long .GdtDescriptor
+
+.Stage2FileName:
+    /* Name of Stage 2 executable file */
+    .ascii "BOOTX64 EFI"

boot/bootsect/espboot.S

@@ -0,0 +1,529 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            boot/bootsect/espboot.S
+ * DESCRIPTION:     XT Boot Loader ESP boot code (FAT32)
+ * DEVELOPERS:      Aiken Harris <harraiken91@gmail.com>
+ */
+
+.text
+.code16
+
+
+.global Start
+Start:
+    /* Jump to the real start to omit the BPB (BIOS Parameter Block) */
+    jmp RealStart
+    nop
+
+/* BIOS Parameter Block */
+OsName:
+    .ascii "XTOS "
+OsVersion:
+    .ascii "1.0"
+BytesPerSector:
+    .word 512
+SectorsPerCluster:
+    .byte 2
+ReservedSectors:
+    .word 8
+FatCopies:
+    .byte 1
+RootDirEntries:
+    .word 1024
+TotalSectors:
+    .word 0
+MediaType:
+    .byte 0xF8
+SectorsPerFat:
+    .word 0
+SectorsPerTrack:
+    .word 17
+NumberOfHeads:
+    .word 0
+HiddenSectors:
+    .long 0
+TotalBigSectors:
+    .long 0x200000
+BigSectorsPerFat:
+    .long 0x1FE0
+ExtendedFlags:
+    .word 0
+FsVersion:
+    .word 0
+RootDirStartCluster:
+    .long 0
+FSInfoSector:
+    .word 0
+BackupBootSector:
+    .word 6
+Reserved:
+    .fill 12, 1, 0
+DriveNumber:
+    .byte 0x80
+CurrentHead:
+    .byte 0
+Signature:
+    .byte 0x29
+SerialNumber:
+    .long 0
+VolumeLabel:
+    .ascii "NO NAME    "
+FileSystem:
+    .ascii "FAT32   "
+
+RealStart:
+    /* Set segments and stack */
+    cli
+    cld
+    xorw %ax, %ax
+    movw %ax, %ds
+    movw %ax, %es
+    movw %ax, %ss
+    movw $0x7C00, %bp
+    leaw -16(%bp), %sp
+    sti
+
+    /* Get drive number */
+    cmpb $0xFF, DriveNumber - Start(%bp)
+    jne GetDriveParameters
+    movb %dl, DriveNumber - Start(%bp)
+
+GetDriveParameters:
+    /* Get drive parameters from the BIOS */
+    movb DriveNumber - Start(%bp), %dl
+    movb $0x08, %ah
+    movb $0x00, %al
+    int $0x13
+    jnc GetDriveSize
+    movw $0xFFFF, %cx
+    movb %cl, %dh
+
+GetDriveSize:
+    /* Get drive size from the BIOS */
+    movzbl %dh, %eax
+    incw %ax
+    movzbl %cl, %edx
+    andb $0x3F, %dl
+    mulw %dx
+    xchgb %cl, %ch
+    shrb $0x06, %ch
+    incw %cx
+    movzwl %cx, %ecx
+    mull %ecx
+    movl %eax, %edi
+
+VerifyBiosParameterBlock:
+    /* Verify the FAT32 BPB */
+    cmpw $0x00, SectorsPerFat - Start(%bp)
+    jne FsError
+    cmpw $0x00, FsVersion - Start(%bp)
+    ja FsError
+
+ReadExtraCode:
+    /* Read second VBR sector with extra boot code (3 sectors starting from sector 2) */
+    movl HiddenSectors - Start(%bp), %eax
+    addl $0x02, %eax
+    movw $0x03, %cx
+    xorw %bx, %bx
+    movw %bx, %es
+    movw $0x7E00, %bx
+    call ReadSectors
+    jmp StartExtraCode
+
+ReadSectors:
+    /* Check for extended BIOS functions and use it only if available */
+    pushw %es
+    pushal
+    movb $0x41, %ah
+    movw $0x55AA, %bx
+    movb DriveNumber - Start(%bp), %dl
+    int $0x13
+    jc .ReadCHS
+    cmpw $0xAA55, %bx
+    jne .ReadCHS
+    testb $0x01, %cl
+    jz .ReadCHS
+
+    /* Verify drive size and determine whether to use CHS or LBA */
+    cmpl %edi, %eax
+    jnb .ReadLBA
+
+.ReadCHS:
+    /* Read sectors using CHS */
+    popal
+
+.CHSLoop:
+    /* Read sector by sector using CHS */
+    pushw %cx
+    pushal
+    xorl %edx, %edx
+    movzwl SectorsPerTrack - Start(%bp), %ecx
+    divl %ecx
+    incb %dl
+    movb %dl, %cl
+    movl %eax, %edx
+    shrl $0x10, %edx
+    divw NumberOfHeads - Start(%bp)
+    movb %dl, %dh
+    movb DriveNumber - Start(%bp), %dl
+    movb %al, %ch
+    rorb $0x01, %ah
+    rorb $0x01, %ah
+    orb %ah, %cl
+    movw $0x0201, %ax
+    int $0x13
+    popal
+    popw %cx
+    jc DiskError
+    incl %eax
+    movw %es, %dx
+    addw $0x20, %dx
+    movw %dx, %es
+    loop .CHSLoop
+    popw %es
+    ret
+
+.ReadLBA:
+    /* Prepare DAP packet and read sectors using LBA */
+    popal
+    pushw %cx
+    pushal
+    pushw $0x00
+    pushw $0x00
+    pushl %eax
+    pushw %es
+    pushw %bx
+    pushw %cx
+    pushw $0x10
+    movw %sp, %si
+    movb DriveNumber - Start(%bp), %dl
+    movb $0x42, %ah
+    int $0x13
+    jc DiskError
+    addw $0x10, %sp
+    popal
+    popw %si
+    pushw %bx
+    movzwl %si, %ebx
+    addl %ebx, %eax
+    shll $0x05, %ebx
+    movw %es, %dx
+    addw %bx, %dx
+    movw %dx, %es
+    popw %bx
+    subw %si, %cx
+    jnz .ReadLBA
+    popw %es
+    ret
+
+DiskError:
+    /* Display disk error message and reboot */
+    movw $.MsgDiskError, %si
+    call Print
+    jmp Reboot
+
+FsError:
+    /* Display FS error message and reboot */
+    movw $.MsgFsError, %si
+    call Print
+    jmp Reboot
+
+Print:
+    /* Simple routine to print messages */
+    lodsb
+    orb     %al, %al
+    jz      .DonePrint
+    movb    $0x0E, %ah
+    movw    $0x07, %bx
+    int     $0x10
+    jmp     Print
+.DonePrint:
+    retw
+
+Reboot:
+    /* Display a message, wait for a key press and reboot */
+    movw $.MsgAnyKey, %si
+    call Print
+    xorw %ax, %ax
+    int $0x16
+    int $0x19
+
+.MsgAnyKey:
+    .ascii "Press any key to restart...\r\n\0"
+
+.MsgDiskError:
+    .ascii "Disk error!\r\n\0"
+
+.MsgFsError:
+    .ascii "File system error!\r\n\0"
+
+/* Fill the rest of the VBR with zeros and add VBR signature at the end */
+.fill (510 - (. - Start)), 1, 0
+.word 0xAA55
+
+
+StartExtraCode:
+    /* Load XTLDR file from disk */
+    call LoadStage2
+
+    /* Enable A20 gate */
+    call EnableA20
+
+    /* Call architecture specific initialization code */
+    call InitializeCpu
+
+    /* Jump to Stage2 */
+    call RunStage2
+
+Clear8042:
+    /* Clear 8042 PS/2 buffer */
+    nop
+    nop
+    nop
+    nop
+    inb $0x64, %al
+    cmpb $0xff, %al
+    je .Clear8042_Done
+    testb $0x02, %al
+    jnz Clear8042
+.Clear8042_Done:
+    ret
+
+EnableA20:
+    /* Enable A20 gate */
+    pushaw
+    call Clear8042
+    movb $0xD1, %al
+    outb %al, $0x64
+    call Clear8042
+    movb $0xDF, %al
+    outb %al, $0x60
+    call Clear8042
+    movb $0xFF, %al
+    outb %al, $0x64
+    call Clear8042
+    popaw
+    ret
+
+FindFatEntry:
+    /* Find a file or directory in the FAT table */
+    pushw %bx
+    pushw %cx
+    pushw %dx
+    pushw %si
+    pushw %di
+.FindFatCluster:
+    /* Find FAT32 cluster holding the entry */
+    cmp $0x0FFFFFF8, %eax
+    jae .FindEntryFail
+    pushl %eax
+    movw $0x0200, %bx
+    movw %bx, %es
+    call ReadCluster
+    popl %eax
+    movb SectorsPerCluster - Start(%bp), %cl
+    shlw $0x04, %cx
+    xorw %di, %di
+.FindEntryLoop:
+    /* Find the entry */
+    movb %es:(%di), %al
+    cmpb $0x00, %al
+    je .FindEntryFail
+    cmpb $0xE5, %al
+    je .FindSkipEntry
+    movb %es:0x0B(%di), %ah
+    cmpb $0x0F, %ah
+    je .FindSkipEntry
+    pushw %di
+    pushw %si
+    pushw %cx
+    movw $0x0B, %cx
+    repe cmpsb
+    popw %cx
+    popw %si
+    popw %di
+    jnz .FindSkipEntry
+    movw %es:0x1A(%di), %ax
+    movw %es:0x14(%di), %dx
+    shll $0x10, %edx
+    orl %edx, %eax
+    clc
+    jmp .FindEntryDone
+.FindSkipEntry:
+    /* Skip to the next entry */
+    addw $0x20, %di
+    decw %cx
+    jnz .FindEntryLoop
+    call GetFatEntry
+    jmp .FindFatCluster
+.FindEntryFail:
+    /* Error, file/directory not found */
+    stc
+.FindEntryDone:
+    /* Clean up the stack */
+    popw %di
+    popw %si
+    popw %dx
+    popw %cx
+    popw %bx
+    ret
+
+GetFatEntry:
+    /* Get FAT32 sector and offset from FAT table */
+    shll $0x02, %eax
+    movl %eax, %ecx
+    xorl %edx, %edx
+    movzwl BytesPerSector - Start(%bp), %ebx
+    pushl %ebx
+    divl %ebx
+    movzwl ReservedSectors - Start(%bp), %ebx
+    addl %ebx, %eax
+    movl HiddenSectors - Start(%bp), %ebx
+    addl %ebx, %eax
+    popl %ebx
+    decl %ebx
+    andl %ebx, %ecx
+    movzwl ExtendedFlags - Start(%bp), %ebx
+    andw $0x0F, %bx
+    jz LoadFatSector
+    cmpb FatCopies - Start(%bp), %bl
+    jae FsError
+    pushl %eax
+    movl BigSectorsPerFat - Start(%bp), %eax
+    mull %ebx
+    popl %edx
+    addl %edx, %eax
+
+LoadFatSector:
+    /* Load FAT32 sector from disk */
+    pushl %ecx
+    movw $0x9000, %bx
+    movw %bx, %es
+    cmpl %esi, %eax
+    je .LoadFatSectorDone
+    movl %eax, %esi
+    xorw %bx, %bx
+    movw $0x01, %cx
+    call ReadSectors
+.LoadFatSectorDone:
+    /* Clean up the stack */
+    popl %ecx
+    movl %es:(%ecx), %eax
+    andl $0x0FFFFFFF, %eax
+    ret
+
+LoadStage2:
+    /* Load Stage2 executable, first find file in the path */
+    movl $0xFFFFFFFF, %esi
+    pushl %esi
+    movl 0x7C2C, %eax
+    movw $.EfiDirName, %si
+    call FindFatEntry
+    jc Stage2NotLoaded
+    movw $.BootDirName, %si
+    call FindFatEntry
+    jc Stage2NotLoaded
+    movw $.Stage2FileName, %si
+    call FindFatEntry
+    jc Stage2NotLoaded
+    popl %esi
+    /* Load XTLDR file from disk */
+    cmpl $0x02, %eax
+    jb FileNotFound
+    cmpl $0x0FFFFFF8, %eax
+    jae FileNotFound
+    movw $(0xF800 / 16), %bx
+    movw %bx, %es
+.LoadStage2Loop:
+    /* Load file data from disk */
+    pushl %eax
+    xorw %bx, %bx
+    pushw %es
+    call ReadCluster
+    popw %es
+    xorw %bx, %bx
+    movb SectorsPerCluster - Start(%bp), %bl
+    shlw $0x05, %bx
+    movw %es, %ax
+    addw %bx, %ax
+    movw %ax, %es
+    popl %eax
+    pushw %es
+    call GetFatEntry
+    popw %es
+    cmpl $0x0FFFFFF8, %eax
+    jb .LoadStage2Loop
+    ret
+
+ParseExecutableHeader:
+    /* Parse Stage2 PE/COFF executable header */
+    pushw %es
+    movw $(0xF800 / 16), %ax
+    movw %ax, %es
+    movl %es:60, %eax
+    addl $(4 + 20), %eax
+    movl %es:16(%eax), %eax
+    addl $0xF800, %eax
+    popw %es
+    ret
+
+ReadCluster:
+    /* Read FAT32 cluster from disk */
+    decl %eax
+    decl %eax
+    xorl %edx, %edx
+    movzbl SectorsPerCluster - Start(%bp), %ebx
+    mull %ebx
+    pushl %eax
+    xorl %edx, %edx
+    movzbl FatCopies - Start(%bp), %eax
+    mull BigSectorsPerFat - Start(%bp)
+    movzwl ReservedSectors - Start(%bp), %ebx
+    addl %ebx, %eax
+    addl HiddenSectors - Start(%bp), %eax
+    popl %ebx
+    addl %ebx, %eax
+    xorw %bx, %bx
+    movzbw SectorsPerCluster - Start(%bp), %cx
+    call ReadSectors
+    ret
+
+/* Include architecture specific code */
+.include ARCH_ESP_SOURCE
+
+CpuUnsupported:
+    /* Display CPU unsupported message and reboot */
+    popal
+    movw $.MsgCpuUnsupported, %si
+    call Print
+    jmp Reboot
+
+FileNotFound:
+    /* Display XTLDR not found message and reboot */
+    movw $.MsgXtLdrNotFound, %si
+    call Print
+    jmp Reboot
+
+Stage2NotLoaded:
+    /* Clean up the stack and display XTLDR not found message and reboot */
+    popl %esi
+    jmp FileNotFound
+
+.BootDirName:
+    /* Boot directory name */
+    .ascii "BOOT       "
+
+.EfiDirName:
+    /* EFI directory name */
+    .ascii "EFI        "
+
+.MsgCpuUnsupported:
+    .ascii "CPU not supported!\r\n\0"
+
+.MsgXtLdrNotFound:
+    .ascii "XTLDR Stage2 not found!\r\n\0"
+
+/* Fill the rest of the extra VBR with zeros and add signature */
+.fill (2043 - (. - Start)), 1, 0
+.ascii "XTLDR"

boot/bootsect/i686/cpu.S

@@ -0,0 +1,124 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            boot/bootsect/i686/cpu.S
+ * DESCRIPTION:     Low-level support for CPU initialization
+ * DEVELOPERS:      Aiken Harris <harraiken91@gmail.com>
+ */
+
+
+BuildPageMap:
+    /* Generate page map for first 16MB of memory */
+    pushaw
+    pushw %es
+    cld
+    movw $(0x1000 >> 0x04), %ax
+    movw %ax, %es
+    xorw %di, %di
+    movl $(0x2000 | 0x03), %eax
+    stosl
+    movl $(0x3000 | 0x03), %eax
+    stosl
+    movl $(0x4000 | 0x03), %eax
+    stosl
+    movl $(0x5000 | 0x03), %eax
+    stosl
+    xorl %eax, %eax
+    movw $(1024 - 4), %cx
+    rep stosl
+    movl $0x00000003, %eax
+    movl $4, %edx
+    movw $(0x2000 >> 0x04), %bx
+.BuildPageMapLoop:
+    /* Identity map 1024 pages of 4KB */
+    movw %bx, %es
+    xorw %di, %di
+    pushl %edx
+    movw $1024, %cx
+.FillPageMapTable:
+    /* Fill the page table */
+    movl %eax, %es:(%di)
+    addl $4096, %eax
+    addw $0x04, %di
+    loop .FillPageMapTable
+    popl %edx
+    addw $(0x1000 >> 0x04), %bx
+    decl %edx
+    jnz .BuildPageMapLoop
+    popw %es
+    popaw
+    ret
+
+InitializeCpu:
+    /* Check if CPU supports CPUID */
+    pushal
+    pushfl
+    popl %eax
+    movl %eax, %ebx
+    xorl $0x00200000, %eax
+    pushl %eax
+    popfl
+    pushfl
+    popl %eax
+    cmpl %ebx, %eax
+    je CpuUnsupported
+    popal
+    call LoadGdt
+    ret
+
+LoadGdt:
+    /* Load Global Descriptor Table */
+    lgdt .GdtPointer
+    ret
+
+RunStage2:
+    /* Switch to protected mode and pass control to Stage 2 */
+    call BuildPageMap
+    call ParseExecutableHeader
+    pushl %eax
+    cli
+    movl %cr0, %eax
+    orl $0x01, %eax
+    movl %eax, %cr0
+    ljmp $0x08, $.Stage2ProtectedMode
+.code32
+.Stage2ProtectedMode:
+    /* Set segments and stack, then jump to Stage 2 */
+    movw $0x10, %ax
+    movw %ax, %ds
+    movw %ax, %es
+    movw %ax, %ss
+    xorw %ax, %ax
+    movw %ax, %fs
+    movw %ax, %gs
+    popl %eax
+    xorl %ebx, %ebx
+    xorl %ecx, %ecx
+    xorl %edx, %edx
+    xorl %esi, %esi
+    xorl %edi, %edi
+    xorl %ebp, %ebp
+    movl $0x1000, %ebx
+    movl %ebx, %cr3
+    movl %cr0, %ebx
+    orl $0x80000000, %ebx
+    movl %ebx, %cr0
+    jmp *%eax
+
+.code16
+.GdtDescriptor:
+    /* Global Descriptor Table */
+    .quad 0x0000000000000000
+    .quad 0x00CF9A000000FFFF
+    .quad 0x00CF92000000FFFF
+    .quad 0x00009E000000FFFF
+    .quad 0x000092000000FFFF
+
+.GdtPointer:
+    /* Pointer to Global Descriptor Table */
+    .word .GdtPointer - .GdtDescriptor - 1
+    .long .GdtDescriptor
+
+.Stage2FileName:
+    /* Name of Stage 2 executable file */
+    .ascii "BOOTIA32EFI"

boot/bootsect/mbrboot.S

@@ -0,0 +1,154 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            boot/bootsect/amd64/mbrboot.S
+ * DESCRIPTION:     XT Boot Loader MBR boot code
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ *                  Aiken Harris <aiken@codingworkshop.eu.org>
+ */
+
+.text
+.code16
+
+
+.global Start
+Start:
+    /* Set segments and stack */
+    cli
+    cld
+    xorw %ax, %ax
+    movw %ax, %ds
+    movw %ax, %es
+    movw %ax, %ss
+    movw $0x7C00, %bp
+    leaw -16(%bp), %sp
+    sti
+
+    /* Relocate MBR to 1FE0:7C00 */
+    movw $0x1FE0, %ax
+    movw %ax, %es
+    movw %bp, %si
+    movw %bp, %di
+    movw $256, %cx
+    rep movsw
+
+    /* Jump to the relocated MBR code */
+    jmp $0x1FE0, $RealStart
+
+RealStart:
+    /* Set segments */
+    movw %ax, %ds
+    movw %ax, %es
+    movw %ax, %ss
+
+    /* Print welcome message */
+    leaw .MsgXtosBoot, %si
+    call Print
+
+    /* Get BIOS boot drive and partition table offset */
+    lea 0x1BE(%bp), %si
+    movb %dl, .BootDrive
+    xorw %cx, %cx
+
+FindActivePartition:
+    /* Look for active partition */
+    movb (%si), %al
+    cmpb $0x80, %al
+    je PartitionFound
+    addw $16, %si
+    incw %cx
+    cmpw $4, %cx
+    jne FindActivePartition
+    jmp PartitionNotFound
+
+PartitionFound:
+    /* Save LBA start */
+    movl 8(%si), %eax
+    movl %eax, .LbaStart
+
+    /* Prepare Disk Address Packet (DAP) */
+    lea .Dap, %si
+    movb $0x10, 0(%si)
+    movb $0x00, 1(%si)
+    movw $1, 2(%si)
+    movw $0x7C00, 4(%si)
+    movw $0x0000, 6(%si)
+    movl .LbaStart, %eax
+    movl %eax, 8(%si)
+
+    /* Read Volume Boot Record (VBR) */
+    movb $0x42, %ah
+    movb .BootDrive, %dl
+    int $0x13
+    jc VbrReadFail
+
+    /* Verify VBR signature */
+    cmpw $0xAA55, (0x7C00 + 0x01FE)
+    jne InvalidSignature
+
+    /* Jump to the VBR code */
+    jmp $0x0000, $0x7C00
+
+InvalidSignature:
+    /* Invalid signature error */
+    leaw .MsgInvalidSignature, %si
+    call Print
+    jmp HaltSystem
+
+PartitionNotFound:
+    /* Active partition not found error */
+    leaw .MsgPartitionNotFound, %si
+    call Print
+    jmp HaltSystem
+
+VbrReadFail:
+    /* VBR read failed error */
+    leaw .MsgVbrReadFail, %si
+    call Print
+    jmp HaltSystem
+
+HaltSystem:
+    /* Disable interrupts and stop the CPU */
+    cli
+    hlt
+    jmp HaltSystem
+
+Print:
+    /* Simple routine to print messages */
+    lodsb
+    orb     %al, %al
+    jz      DonePrint
+    movb    $0x0E, %ah
+    movw    $0x07, %bx
+    int     $0x10
+    jmp     Print
+DonePrint:
+    retw
+
+.BootDrive:
+    /* Storage for the boot drive number */
+    .byte 0
+
+.Dap:
+    /* Storage for the Disk Address Packet (DAP) */
+    .fill 16, 1, 0
+
+.LbaStart:
+    /* Storage for the LBA start */
+    .long 0
+
+.MsgInvalidSignature:
+    .asciz "Invalid partition signature!"
+
+.MsgPartitionNotFound:
+    .asciz "Bootable partition not found!"
+
+.MsgVbrReadFail:
+    .asciz "VBR read failed!"
+
+.MsgXtosBoot:
+    .asciz "Starting XTOS boot loader...\r\n"
+
+/* Fill the rest of the MBR with zeros and add MBR signature at the end */
+.fill (510 - (. - Start)), 1, 0
+.word 0xAA55

boot/xtldr/CMakeLists.txt

@@ -16,6 +16,7 @@ list(APPEND LIBXTLDR_SOURCE
 # Specify list of source code files
 list(APPEND XTLDR_SOURCE
     ${XTLDR_SOURCE_DIR}/arch/${ARCH}/memory.cc
+    ${XTLDR_SOURCE_DIR}/biosutil.cc
     ${XTLDR_SOURCE_DIR}/bootutil.cc
     ${XTLDR_SOURCE_DIR}/config.cc
     ${XTLDR_SOURCE_DIR}/console.cc
@@ -38,6 +39,9 @@ add_executable(xtldr ${XTLDR_SOURCE})
 # Add linker libraries
 target_link_libraries(xtldr libxtos)
 
+# Add linker options
+target_link_options(xtldr PRIVATE /ALIGN:512)
+
 # Set proper binary name and install target
 if(ARCH STREQUAL "i686")
 	set(BINARY_NAME "bootia32")
@@ -49,5 +53,6 @@ set_install_target(xtldr efi/boot)
 
 # Set loader entrypoint and subsystem
 set_entrypoint(xtldr "BlStartXtLoader")
+set_imagebase(xtldr ${BASEADDRESS_XTLDR})
 set_linker_map(xtldr TRUE)
 set_subsystem(xtldr efi_application)

boot/xtldr/biosutil.cc

@@ -0,0 +1,190 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/biosutil.cc
+ * DESCRIPTION:     Legacy BIOS support
+ * DEVELOPERS:      Aiken Harris <harraiken91@gmail.com>
+ */
+
+#include <xtldr.hh>
+
+
+/**
+ * Clears the entire screen and moves the cursor to the top-left corner.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+VOID
+BiosUtils::ClearScreen()
+{
+    VOLATILE PUSHORT VgaBuffer = (PUSHORT)0xB8000;
+    USHORT Blank;
+    UINT Index;
+
+    /* Set blank character */
+    Blank = (0x0F << 8) | L' ';
+
+    /* Fill the entire screen with blank characters */
+    for(Index = 0; Index < VgaWidth * VgaHeight; Index++)
+    {
+        VgaBuffer[Index] = Blank;
+    }
+
+    /* Reset cursor position to the top-left corner */
+    CursorX = 0;
+    CursorY = 0;
+
+    /* Update the hardware cursor position */
+    UpdateCursor();
+}
+
+/**
+ * Formats the input string and prints it out to the screen.
+ *
+ * @param Format
+ *        The formatted string that is to be written to the output.
+ *
+ * @param ...
+ *        Depending on the format string, this routine might expect a sequence of additional arguments.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+VOID
+BiosUtils::Print(IN PCWSTR Format,
+                 IN ...)
+{
+    RTL_PRINT_CONTEXT PrintContext;
+    VA_LIST Arguments;
+
+    /* Initialise the print contexts */
+    PrintContext.WriteWideCharacter = PutChar;
+
+    /* Initialise the va_list */
+    VA_START(Arguments, Format);
+
+    /* Format and print the string to the stdout */
+    RTL::WideString::FormatWideString(&PrintContext, (PWCHAR)Format, Arguments);
+
+    /* Clean up the va_list */
+    VA_END(Arguments);
+}
+
+/**
+ * Writes a single wide character to the screen using legacy BIOS VGA text mode.
+ *
+ * @param Character
+ *        The wide character to be printed.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+XTSTATUS
+BiosUtils::PutChar(IN WCHAR Character)
+{
+    VOLATILE PUSHORT VgaBuffer = (PUSHORT)0xB8000;
+    USHORT VgaCharacter;
+
+    /* Handle special characters */
+    if(Character == L'\n')
+    {
+        /* Move to the next line */
+        CursorX = 0;
+        CursorY++;
+    }
+    else if(Character == L'\r')
+    {
+        /* Move to the beginning of the current line */
+        CursorX = 0;
+    }
+    else
+    {
+        /* Print character and move cursor to the right */
+        VgaCharacter = (0x0F << 8) | (Character & 0xFF);
+        VgaBuffer[CursorY * VgaWidth + CursorX] = VgaCharacter;
+        CursorX++;
+    }
+
+    /* Handle moving to the next line if cursor is at the end of the line */
+    if(CursorX >= VgaWidth)
+    {
+        CursorX = 0;
+        CursorY++;
+    }
+
+    /* Handle scrolling if cursor is at the end of the screen */
+    if(CursorY >= VgaHeight)
+    {
+        ScrollScreen();
+        CursorY = VgaHeight - 1;
+    }
+
+    /* Update the hardware cursor position */
+    UpdateCursor();
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Scrolls the entire screen content up by one line and clears the last line.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+VOID
+BiosUtils::ScrollScreen()
+{
+    VOLATILE PUSHORT VgaBuffer = (PUSHORT)0xB8000;
+    USHORT Blank;
+    UINT Index;
+
+    /* Set blank character */
+    Blank = (0x0F << 8) | L' ';
+
+    /* Move every line up by one */
+    for(Index = 0; Index < (VgaHeight - 1) * VgaWidth; Index++)
+    {
+        VgaBuffer[Index] = VgaBuffer[Index + VgaWidth];
+    }
+
+    /* Clear the last line */
+    for(Index = (VgaHeight - 1) * VgaWidth; Index < VgaHeight * VgaWidth; Index++)
+    {
+        VgaBuffer[Index] = Blank;
+    }
+}
+
+/**
+ * Updates the hardware cursor position on the screen.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+VOID
+BiosUtils::UpdateCursor()
+{
+    USHORT Position;
+
+    /* Calculate cursor position */
+    Position = CursorY * VgaWidth + CursorX;
+
+    /* Send command to set the high byte of the cursor position */
+    HL::IoPort::WritePort8(0x3D4, 0x0E);
+    HL::IoPort::WritePort8(0x3D5, (UCHAR)((Position >> 8) & 0xFF));
+
+    /* Send command to set the low byte of the cursor position */
+    HL::IoPort::WritePort8(0x3D4, 0x0F);
+    HL::IoPort::WritePort8(0x3D5, (UCHAR)(Position & 0xFF));
+}

boot/xtldr/config.cc

@@ -362,6 +362,13 @@ Configuration::InitializeBootMenuList(IN ULONG MaxNameLength,
     return STATUS_EFI_SUCCESS;
 }
 
+/**
+ * Initializes the XTLDR configuration subsystem.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
 XTCDECL
 VOID
 Configuration::InitializeConfiguration()
@@ -615,7 +622,7 @@ Configuration::ParseConfigFile(IN CONST PCHAR RawConfig,
             SectionName = InputData;
 
             /* Find end of the section name */
-            while(*InputData != ']' && *InputData != '\0' && *InputData != '\n')
+            while(*InputData != ']' && *InputData != '\0' && *InputData != '\r' && *InputData != '\n')
             {
                 /* Advance to the next character */
                 InputData++;
@@ -665,7 +672,7 @@ Configuration::ParseConfigFile(IN CONST PCHAR RawConfig,
             Key = InputData;
 
             /* Find end of the key */
-            while(*InputData != '=' && *InputData != '\0' && *InputData != '\n')
+            while(*InputData != '=' && *InputData != '\0' && *InputData != '\r' && *InputData != '\n')
             {
                 /* Advance to the next character */
                 InputData++;
@@ -693,7 +700,7 @@ Configuration::ParseConfigFile(IN CONST PCHAR RawConfig,
             Value = InputData;
 
             /* Find end of the value */
-            while(*InputData != '\0' && *InputData != '\n')
+            while(*InputData != '\0' && *InputData != '\r' && *InputData != '\n')
             {
                 /* Advance to the next character */
                 InputData++;

boot/xtldr/data.cc

@@ -10,6 +10,18 @@
 #include <xtldr.hh>
 
 
+/* Legacy BIOS cursor X position */
+USHORT BiosUtils::CursorX = 0;
+
+/* Legacy BIOS cursor Y position */
+USHORT BiosUtils::CursorY = 0;
+
+/* Legacy BIOS screen height */
+CONST USHORT BiosUtils::VgaHeight = 25;
+
+/* Legacy BIOS screen width */
+CONST USHORT BiosUtils::VgaWidth = 80;
+
 /* XT Boot Loader menu list */
 PLIST_ENTRY Configuration::BootMenuList = NULLPTR;
 

boot/xtldr/debug.cc

@@ -387,9 +387,16 @@ Debug::PutChar(IN WCHAR Character)
     return HL::ComPort::WriteComPort(&SerialPort, Buffer[0]);
 }
 
+/**
+ * Determines if the serial port has been successfully initialized and is ready for communication.
+ *
+ * @return This routine returns TRUE if the serial port is initialized and ready, FALSE otherwise.
+ *
+ * @since XT 1.0
+ */
 XTCDECL
 BOOLEAN
 Debug::SerialPortReady()
 {
-    return (BOOLEAN)(SerialPort.Flags & COMPORT_FLAG_INIT);
+    return (SerialPort.Flags & COMPORT_FLAG_INIT);
 }

boot/xtldr/includes/xtldr.hh

@@ -13,9 +13,27 @@
 #include <xtver.h>
 
 #include <libxtos.hh>
-#include <globals.hh>
 
 
+class BiosUtils
+{
+    private:
+        STATIC USHORT CursorX;
+        STATIC USHORT CursorY;
+        STATIC CONST USHORT VgaHeight;
+        STATIC CONST USHORT VgaWidth;
+
+    public:
+        STATIC XTCDECL VOID ClearScreen();
+        STATIC XTCDECL VOID Print(IN PCWSTR Format,
+                                  IN ...);
+        STATIC XTCDECL XTSTATUS PutChar(IN WCHAR Character);
+
+    private:
+        STATIC XTCDECL VOID ScrollScreen();
+        STATIC XTCDECL VOID UpdateCursor();
+};
+
 class BootUtils
 {
     public:

boot/xtldr/modules/xtos_o/i686/memory.cc

@@ -59,9 +59,22 @@ EFI_STATUS
 Xtos::EnablePaging(IN PXTBL_PAGE_MAPPING PageMap)
 {
     EFI_STATUS Status;
+    ULONG_PTR SelfMapAddress;
+
+    /* Initialize self map address */
+    if(PageMap->PageMapLevel == 3)
+    {
+        /* For PML3 (PAE) use PTE base address */
+        SelfMapAddress = MM_PTE_BASE;
+    }
+    else
+    {
+        /* For PML2 (PAE disabled) use legacy PDE base address */
+        SelfMapAddress = MM_PDE_LEGACY_BASE;
+    }
 
     /* Build page map */
-    Status = XtLdrProtocol->Memory.BuildPageMap(PageMap, MM_PTE_BASE);
+    Status = XtLdrProtocol->Memory.BuildPageMap(PageMap, SelfMapAddress);
     if(Status != STATUS_EFI_SUCCESS)
     {
         /* Failed to build page map */

boot/xtldr/modules/xtos_o/xtos.cc

@@ -414,7 +414,6 @@ Xtos::InitializeLoaderBlock(IN PXTBL_PAGE_MAPPING PageMap,
 {
     PKERNEL_INITIALIZATION_BLOCK LoaderBlock;
     EFI_PHYSICAL_ADDRESS Address;
-    // PVOID RuntimeServices;
     EFI_STATUS Status;
     UINT BlockPages;
     UINT ParametersSize;
@@ -445,20 +444,10 @@ Xtos::InitializeLoaderBlock(IN PXTBL_PAGE_MAPPING PageMap,
     /* Set LoaderInformation block properties */
     LoaderBlock->LoaderInformation.DbgPrint = (PVOID)XtLdrProtocol->Debug.Print;
 
-    /* Attempt to find virtual address of the EFI Runtime Services */
+    /* Set FirmwareInformation block properties */
-    // Status = XtLdrProtocol->GetVirtualAddress(MemoryMappings, &EfiSystemTable->RuntimeServices->Hdr, &RuntimeServices);
+    LoaderBlock->FirmwareInformation.FirmwareType = SystemFirmwareEfi;
-    // if(Status == STATUS_EFI_SUCCESS)
+    // LoaderBlock->FirmwareInformation.EfiFirmware.EfiVersion = EfiSystemTable->Hdr.Revision;
-    // {
+    LoaderBlock->FirmwareInformation.EfiFirmware.EfiRuntimeServices = NULLPTR;
-        /* Set FirmwareInformation block properties */
-        LoaderBlock->FirmwareInformation.FirmwareType = SystemFirmwareEfi;
-        LoaderBlock->FirmwareInformation.EfiFirmware.EfiVersion = 0; //EfiSystemTable->Hdr.Revision;
-        LoaderBlock->FirmwareInformation.EfiFirmware.EfiRuntimeServices = NULLPTR;
-    // }
-    // else
-    // {
-    //     /* Set invalid firmware type to indicate that kernel cannot rely on FirmwareInformation block */
-    //     LoaderBlock->FirmwareInformation.FirmwareType = SystemFirmwareInvalid;
-    // }
 
     /* Copy parameters to kernel initialization block */
     LoaderBlock->KernelParameters = (PWCHAR)((UINT_PTR)*VirtualAddress + sizeof(KERNEL_INITIALIZATION_BLOCK));
@@ -663,7 +652,7 @@ Xtos::RunBootSequence(IN PEFI_FILE_HANDLE BootDir,
     /* Add kernel image memory mapping */
     Status = XtLdrProtocol->Memory.MapVirtualMemory(&PageMap, ImageContext->VirtualAddress,
                                                     ImageContext->PhysicalAddress, ImageContext->ImagePages,
-                                                    LoaderExceptionBlock); // 0 is LoaderExceptionBlock?! Should be LoaderSystemCode?
+                                                    LoaderSystemCode);
     if(Status != STATUS_EFI_SUCCESS)
     {
         return Status;

boot/xtldr/xtldr.cc

@@ -9,6 +9,13 @@
 #include <xtldr.hh>
 
 
+/**
+ * Disables access to EFI Boot Services.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
 XTCDECL
 VOID
 XtLoader::DisableBootServices()
@@ -17,6 +24,13 @@ XtLoader::DisableBootServices()
 
 }
 
+/**
+ * Queries the availability of EFI Boot Services.
+ *
+ * @return This routine returns TRUE if EFI Boot Services are available, FALSE otherwise.
+ *
+ * @since XT 1.0
+ */
 XTCDECL
 BOOLEAN
 XtLoader::GetBootServicesStatus()
@@ -24,6 +38,13 @@ XtLoader::GetBootServicesStatus()
     return LoaderStatus.BootServices;
 }
 
+/**
+ * Retrieves the EFI image handle.
+ *
+ * @return This routine returns a handle to the EFI-loaded image.
+ *
+ * @since XT 1.0
+ */
 XTCDECL
 EFI_HANDLE
 XtLoader::GetEfiImageHandle()
@@ -31,6 +52,13 @@ XtLoader::GetEfiImageHandle()
     return XtLoader::EfiImageHandle;
 }
 
+/**
+ * Retrieves the EFI system table pointer.
+ *
+ * @return This routine returns a pointer to the EFI system table.
+ *
+ * @since XT 1.0
+ */
 XTCDECL
 PEFI_SYSTEM_TABLE
 XtLoader::GetEfiSystemTable()
@@ -38,6 +66,19 @@ XtLoader::GetEfiSystemTable()
     return XtLoader::EfiSystemTable;
 }
 
+/**
+ * Provides base address and size of the XTLDR image.
+ *
+ * @param LoaderBase
+ *        Supplies a pointer to a variable that receives the base address of the XTLDR image.
+ *
+ * @param LoaderSize
+ *        Supplies a pointer to a variable that receives the size of the XTLDR image.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
 XTCDECL
 VOID
 XtLoader::GetLoaderImageInformation(PVOID *LoaderBase,
@@ -47,6 +88,13 @@ XtLoader::GetLoaderImageInformation(PVOID *LoaderBase,
     *LoaderSize = XtLoader::LoaderStatus.LoaderSize;
 }
 
+/**
+ * Retrieves the Secure Boot status.
+ *
+ * @return This routine returns SecureBoot status.
+ *
+ * @since XT 1.0
+ */
 XTCDECL
 INT_PTR
 XtLoader::GetSecureBootStatus()
@@ -143,6 +191,13 @@ XtLoader::RegisterBootMenu(IN PVOID BootMenuRoutine)
     BootMenu = (PBL_XT_BOOT_MENU)BootMenuRoutine;
 }
 
+/**
+ * Invokes either a custom boot menu handler, if one has been registered, or displays the default boot menu.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
 XTCDECL
 VOID
 XtLoader::ShowBootMenu()
@@ -181,6 +236,15 @@ BlStartXtLoader(IN EFI_HANDLE ImageHandle,
     PWCHAR Modules;
     EFI_STATUS Status;
 
+    /* Check if system is EFI-based and provided parameters are valid */
+    if(ImageHandle == NULLPTR || SystemTable == NULLPTR)
+    {
+        /* Invalid parameters, print error message using BIOS calls and hang */
+        BiosUtils::ClearScreen();
+        BiosUtils::Print(L"XTLDR requires EFI-based system!");
+        for(;;);
+    }
+
     /* Initialize XTLDR and */
     XtLoader::InitializeBootLoader(ImageHandle, SystemTable);
 

configure.ps1

@@ -4,48 +4,41 @@
 # DESCRIPTION: Project configuration script for preparing the build environment
 # DEVELOPERS:  Aiken Harris <harraiken91@gmail.com>
 
-
 # Check XTchain
 if (-not $env:XTCVER) {
-    Write-Host "XTChain not detected or corrupted!"
+    Write-Error "XTChain not detected or corrupted!"
     exit 1
 }
 
-# Set target architecture
+# Set target architecture defaulting to amd64
-if ($env:TARGET) {
+$ARCH = if ($env:TARGET) { $env:TARGET } else { "amd64" }
-    $ARCH = $env:TARGET
-} else {
-    $ARCH = "amd64"
-}
 
-# Set target build type
+# Set target build type defaulting to Debug
-if (-not $env:BUILD_TYPE) {
+$env:BUILD_TYPE = if ($env:BUILD_TYPE -in @("Debug", "Release")) { $env:BUILD_TYPE } else { "Debug" }
-    $env:BUILD_TYPE = "DEBUG"
-}
 
 # Set variables
-$EXECTOS_SOURCE_DIR = (Get-Location).Path
+$EXECTOS_SOURCE_DIR = $PSScriptRoot
-$EXECTOS_BINARY_DIR = "build-$($ARCH)-$($env:BUILD_TYPE.ToLower())"
+$EXECTOS_BINARY_DIR = Join-Path $EXECTOS_SOURCE_DIR "build-$ARCH-$($env:BUILD_TYPE.ToLower())"
 
-# Create directories if needed
+# Create build directory
-if ($EXECTOS_SOURCE_DIR -eq (Get-Location).Path) {
+if (-not (Test-Path $EXECTOS_BINARY_DIR)) {
-    Write-Host "Creating directories in $EXECTOS_BINARY_DIR"
+    Write-Host "Creating build directory: $EXECTOS_BINARY_DIR"
     New-Item -ItemType Directory -Path $EXECTOS_BINARY_DIR -Force | Out-Null
-    Set-Location -Path $EXECTOS_BINARY_DIR
 }
 
+Set-Location $EXECTOS_BINARY_DIR
+
 # Delete old cache
-Remove-Item -Path "CMakeCache.txt" -ErrorAction SilentlyContinue
+Remove-Item "CMakeCache.txt", "host-tools/CMakeCache.txt" -ErrorAction SilentlyContinue
-Remove-Item -Path "host-tools/CMakeCache.txt" -ErrorAction SilentlyContinue
 
 # Configure project using CMake
-& cmake -G Ninja -DARCH:STRING=$($ARCH) -DBUILD_TYPE:STRING=$($env:BUILD_TYPE) $EXECTOS_SOURCE_DIR
+& cmake -G Ninja "-DARCH:STRING=$ARCH" "-DBUILD_TYPE:STRING=$($env:BUILD_TYPE)" $EXECTOS_SOURCE_DIR
 
 # Check if configuration succeeded
 if ($LASTEXITCODE -ne 0) {
-    Write-Host "Configure script failed."
+    Write-Error "Configure script failed."
     exit 1
-} else {
-    "$($ARCH)" | Out-File -Encoding ASCII -NoNewline build.arch
-    Write-Host "Configure script completed. Enter '$EXECTOS_BINARY_DIR' directory and execute 'xbuild' to build ExectOS."
 }
+
+$ARCH | Out-File -Encoding ASCII -NoNewline "build.arch"
+Write-Host "Configure completed. Run 'xbuild' to build ExectOS."

sdk/cmake/baseaddress/amd64.cmake

@@ -1,2 +1,3 @@
 # Set base addresses for all modules
+set(BASEADDRESS_XTLDR    0x000000000000F800)
 set(BASEADDRESS_XTOSKRNL 0x0000000140000000)

sdk/cmake/baseaddress/i686.cmake

@@ -1,2 +1,3 @@
 # Set base addresses for all modules
+set(BASEADDRESS_XTLDR    0x0000F800)
 set(BASEADDRESS_XTOSKRNL 0x00400000)

sdk/cmake/emulation.cmake

@@ -8,41 +8,79 @@ endif()
 # This target creates a disk image
 add_custom_target(diskimg
                   DEPENDS install
-                  COMMAND sh -c "dd if=/dev/zero of=${EXECTOS_BINARY_DIR}/output/disk.img bs=512 count=${PROJECT_DISK_IMAGE_BLOCKS} 2>/dev/null 1>/dev/null"
+                  COMMAND diskimg -c ${EXECTOS_BINARY_DIR}/output/binaries -f 32 -o ${EXECTOS_BINARY_DIR}/output/disk.img -s ${PROJECT_DISK_IMAGE_SIZE}
-                  COMMAND parted ${EXECTOS_BINARY_DIR}/output/disk.img -s -a minimal mklabel gpt
+                  -m ${EXECTOS_BINARY_DIR}/boot/bootsect/mbrboot.bin -v ${EXECTOS_BINARY_DIR}/boot/bootsect/espboot.bin
-                  COMMAND parted ${EXECTOS_BINARY_DIR}/output/disk.img -s -a minimal mkpart EFI FAT32 2048s ${PROJECT_PART_IMAGE_BLOCKS}s
-                  COMMAND parted ${EXECTOS_BINARY_DIR}/output/disk.img -s -a minimal toggle 1 boot
-                  COMMAND sh -c "dd if=/dev/zero of=${EXECTOS_BINARY_DIR}/output/part.img bs=512 count=${PROJECT_PART_IMAGE_BLOCKS} 2>/dev/null 1>/dev/null"
-                  COMMAND mformat -i ${EXECTOS_BINARY_DIR}/output/part.img -h32 -t32 -n64 -L32
-                  COMMAND sh -c "mcopy -s -i ${EXECTOS_BINARY_DIR}/output/part.img ${EXECTOS_BINARY_DIR}/output/binaries/* ::"
-                  COMMAND sh -c "dd if=${EXECTOS_BINARY_DIR}/output/part.img of=${EXECTOS_BINARY_DIR}/output/disk.img bs=512 count=${PROJECT_PART_IMAGE_BLOCKS} seek=2048 conv=notrunc 2>/dev/null 1>/dev/null"
-                  COMMAND rm ${EXECTOS_BINARY_DIR}/output/part.img
                   VERBATIM)
 
-# This target starts up a BOCHS+OVMF virtual machine
+find_program(BOCHS_EMULATOR bochs)
-add_custom_target(bochsvm
+if(BOCHS_EMULATOR)
-                  DEPENDS diskimg
+    # This target starts up a BOCHS+BIOS virtual machine
-                  COMMAND bochs -f ../sdk/firmware/bochsrc_${ARCH}.cfg -q -unlock
+    add_custom_target(bochsvm
-                  VERBATIM USES_TERMINAL)
+                      DEPENDS diskimg
+                      COMMAND bochs -f ../sdk/firmware/bochsrc_${ARCH}.cfg -q -unlock
+                      VERBATIM USES_TERMINAL)
+endif()
 
-# This target starts up a QEMU+OVMF virtual machine using KVM accelerator
+find_program(QEMU_EMULATOR ${QEMU_COMMAND})
-add_custom_target(testkvm
+if(QEMU_EMULATOR)
-                  DEPENDS install
+    if(CMAKE_HOST_LINUX)
-                  COMMAND ${QEMU_COMMAND} -name "ExectOS-${ARCH}-KVM" -machine type=q35,kernel_irqchip=on,accel=kvm,mem-merge=off,vmport=off -enable-kvm -cpu host,-hypervisor,+topoext
+        # This target starts up a QEMU+OVMF virtual machine using KVM accelerator
-                                          -smp 2,sockets=1,cores=1,threads=2 -m 4G -overcommit mem-lock=off -rtc clock=host,base=localtime,driftfix=none
+        add_custom_target(testefikvm
-                                          -drive file=${EXECTOS_SOURCE_DIR}/sdk/firmware/ovmf_code_${ARCH}.fd,if=pflash,format=raw,unit=0,readonly=on
+                          DEPENDS install
-                                          -drive file=${EXECTOS_SOURCE_DIR}/sdk/firmware/ovmf_vars_${ARCH}.fd,if=pflash,format=raw,unit=1
+                          COMMAND ${QEMU_COMMAND} -name "ExectOS-${ARCH}-EFI-KVM" -machine type=q35,kernel_irqchip=on,accel=kvm,mem-merge=off,vmport=off -enable-kvm -cpu host,-hypervisor,+topoext
-                                          -hda fat:rw:${EXECTOS_BINARY_DIR}/output/binaries
+                                                  -smp 2,sockets=1,cores=1,threads=2 -m 4G -overcommit mem-lock=off -rtc clock=host,base=localtime,driftfix=none
-                                          -boot menu=on -d int -M smm=off -no-reboot -no-shutdown -serial stdio
+                                                  -bios ${EXECTOS_SOURCE_DIR}/sdk/firmware/ovmf_${ARCH}.fd
-                  VERBATIM USES_TERMINAL)
+                                                  -hda fat:rw:${EXECTOS_BINARY_DIR}/output/binaries
+                                                  -boot menu=on -d int -M smm=off -no-reboot -no-shutdown -serial stdio
+                          VERBATIM USES_TERMINAL)
+    elseif(CMAKE_HOST_WIN32)
+        # This target starts up a QEMU+OVMF virtual machine using WHPX accelerator
+        add_custom_target(testefiwhpx
+                          DEPENDS install
+                          COMMAND ${QEMU_COMMAND} -name "ExectOS-${ARCH}-EFI-WHPX" -machine type=q35,kernel_irqchip=off,accel=whpx,mem-merge=off,vmport=off
+                                                  -m 4G -overcommit mem-lock=off -rtc clock=host,base=localtime,driftfix=none
+                                                  -bios ${EXECTOS_SOURCE_DIR}/sdk/firmware/ovmf_${ARCH}.fd
+                                                  -hda fat:rw:${EXECTOS_BINARY_DIR}/output/binaries
+                                                  -boot menu=on -d int -M smm=off -no-reboot -no-shutdown -serial stdio
+                          VERBATIM USES_TERMINAL)
+    endif()
 
-# This target starts up a QEMU+OVMF virtual machine using TCG accelerator
+    # This target starts up a QEMU+OVMF virtual machine using TCG accelerator
-add_custom_target(testtcg
+    add_custom_target(testefitcg
-                  DEPENDS install
+                      DEPENDS install
-                  COMMAND ${QEMU_COMMAND} -name "ExectOS-${ARCH}-TCG" -machine type=q35,accel=tcg -cpu max,-hypervisor
+                      COMMAND ${QEMU_COMMAND} -name "ExectOS-${ARCH}-EFI-TCG" -machine type=q35,accel=tcg -cpu max,-hypervisor
-                                          -smp 2,sockets=1,cores=1,threads=2 -m 4G -overcommit mem-lock=off -rtc clock=host,base=localtime,driftfix=none
+                                              -smp 2,sockets=1,cores=1,threads=2 -m 4G -overcommit mem-lock=off -rtc clock=host,base=localtime,driftfix=none
-                                          -drive file=${EXECTOS_SOURCE_DIR}/sdk/firmware/ovmf_code_${ARCH}.fd,if=pflash,format=raw,unit=0,readonly=on
+                                              -bios ${EXECTOS_SOURCE_DIR}/sdk/firmware/ovmf_${ARCH}.fd
-                                          -drive file=${EXECTOS_SOURCE_DIR}/sdk/firmware/ovmf_vars_${ARCH}.fd,if=pflash,format=raw,unit=1
+                                              -hda fat:rw:${EXECTOS_BINARY_DIR}/output/binaries
-                                          -hda fat:rw:${EXECTOS_BINARY_DIR}/output/binaries
+                                              -boot menu=on -d int -no-reboot -no-shutdown -serial stdio
-                                          -boot menu=on -d int -M smm=off -no-reboot -no-shutdown -serial stdio
+                      VERBATIM USES_TERMINAL)
-                  VERBATIM USES_TERMINAL)
+
+    if(CMAKE_HOST_LINUX)
+        # This target starts up a QEMU+SEABIOS virtual machine using KVM accelerator
+        add_custom_target(testkvm
+                          DEPENDS diskimg
+                          COMMAND ${QEMU_COMMAND} -name "ExectOS-${ARCH}-BIOS-KVM" -machine type=q35,kernel_irqchip=on,accel=kvm,mem-merge=off,vmport=off -enable-kvm -cpu host,-hypervisor,+topoext
+                                                  -smp 2,sockets=1,cores=1,threads=2 -m 4G -overcommit mem-lock=off -rtc clock=host,base=localtime,driftfix=none
+                                                  -hda ${EXECTOS_BINARY_DIR}/output/disk.img
+                                                  -boot menu=on -d int -no-reboot -no-shutdown -serial stdio
+                          VERBATIM USES_TERMINAL)
+    elseif(CMAKE_HOST_WIN32)
+        # This target starts up a QEMU+SEABIOS virtual machine using WHPX accelerator
+        add_custom_target(testwhpx
+                          DEPENDS diskimg
+                          COMMAND ${QEMU_COMMAND} -name "ExectOS-${ARCH}-BIOS-WHPX" -machine type=q35,kernel_irqchip=off,accel=whpx,mem-merge=off,vmport=off
+                                                  -m 4G -overcommit mem-lock=off -rtc clock=host,base=localtime,driftfix=none
+                                                  -hda ${EXECTOS_BINARY_DIR}/output/disk.img
+                                                  -boot menu=on -d int -no-reboot -no-shutdown -serial stdio
+                          VERBATIM USES_TERMINAL)
+    endif()
+
+    # This target starts up a QEMU+SEABIOS virtual machine using TCG accelerator
+    add_custom_target(testtcg
+                      DEPENDS diskimg
+                      COMMAND ${QEMU_COMMAND} -name "ExectOS-${ARCH}-BIOS-TCG" -machine type=q35,accel=tcg -cpu max,-hypervisor
+                                              -smp 2,sockets=1,cores=1,threads=2 -m 4G -overcommit mem-lock=off -rtc clock=host,base=localtime,driftfix=none
+                                              -hda ${EXECTOS_BINARY_DIR}/output/disk.img
+                                              -boot menu=on -d int -no-reboot -no-shutdown -serial stdio
+                      VERBATIM USES_TERMINAL)
+endif()

sdk/cmake/functions.cmake

@@ -59,18 +59,48 @@ function(add_module_linker_flags MODULE FLAGS)
     set_module_property(${MODULE} LINK_FLAGS ${FLAGS})
 endfunction()
 
-# This function sets a property for specified module
+# This function compiles an assembly bootsector file into a flat binary
-function(set_module_property MODULE PROPERTY FLAGS)
+function(compile_bootsector NAME SOURCE BASEADDR ENTRYPOINT)
-    if(NOT ${ARGC} EQUAL 3)
+    set(BINARY_NAME "${NAME}.bin")
-        message(FATAL_ERROR "Invalid number of arguments passwd to add_module_property() function")
+    set(OBJECT_NAME "${NAME}.obj")
-    endif()
+
-    get_target_property(VAL ${MODULE} ${PROPERTY})
+    get_directory_property(DEFS COMPILE_DEFINITIONS)
-    if(VAL)
+    foreach(def ${DEFS})
-        set(VAL "${VAL} ${FLAGS}")
+        list(APPEND ASM_DEFS "-D${def}")
-    else()
+    endforeach()
-        set(VAL "${FLAGS}")
+
-    endif()
+    add_custom_command(
-    set_property(TARGET ${MODULE} PROPERTY ${PROPERTY} ${VAL})
+        OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${BINARY_NAME}
+        COMMAND ${CMAKE_ASM_COMPILER}
+            /nologo
+            --target=i386-none-elf
+            ${ASM_DEFS}
+            -I${CMAKE_CURRENT_SOURCE_DIR}
+            /Fo${CMAKE_CURRENT_BINARY_DIR}/${OBJECT_NAME}
+            -c -- ${SOURCE}
+        COMMAND ${CMAKE_ASM_LINKER}
+            -m elf_i386
+            --image-base=0
+            --oformat binary
+            -Ttext=${BASEADDR}
+            --entry=_start${ENTRYPOINT}
+            -o ${CMAKE_CURRENT_BINARY_DIR}/${BINARY_NAME}
+            ${CMAKE_CURRENT_BINARY_DIR}/${OBJECT_NAME}
+        DEPENDS ${SOURCE}
+    )
+
+    add_custom_target(${NAME} ALL
+        DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${BINARY_NAME}
+    )
+endfunction()
+
+# This function sets the the qemu disk image size (in MiB)
+function(set_disk_image_size SIZE)
+	MATH(EXPR DISK_BLOCKS ${SIZE}*1024*1024/512)
+	MATH(EXPR PART_BLOCKS ${DISK_BLOCKS}-2048)
+	set(PROJECT_DISK_IMAGE_SIZE ${SIZE} CACHE INTERNAL "PROJECT_DISK_IMAGE_SIZE")
+	set(PROJECT_DISK_IMAGE_BLOCKS ${DISK_BLOCKS} CACHE INTERNAL "PROJECT_DISK_IMAGE_BLOCKS")
+	set(PROJECT_PART_IMAGE_BLOCKS ${PART_BLOCKS} CACHE INTERNAL "PROJECT_PART_IMAGE_BLOCKS")
 endfunction()
 
 # This function installs specified directory recursively under destination directory
@@ -89,6 +119,20 @@ function(set_install_target TARGET DESTINATION)
     install(TARGETS ${TARGET} DESTINATION ${EXECTOS_BINARY_DIR}/output/binaries/${DESTINATION})
 endfunction()
 
+# This function sets a property for specified module
+function(set_module_property MODULE PROPERTY FLAGS)
+    if(NOT ${ARGC} EQUAL 3)
+        message(FATAL_ERROR "Invalid number of arguments passwd to add_module_property() function")
+    endif()
+    get_target_property(VAL ${MODULE} ${PROPERTY})
+    if(VAL)
+        set(VAL "${VAL} ${FLAGS}")
+    else()
+        set(VAL "${FLAGS}")
+    endif()
+    set_property(TARGET ${MODULE} PROPERTY ${PROPERTY} ${VAL})
+endfunction()
+
 function(set_sdk_target FILENAME DESTINATION)
     install(DIRECTORY ${FILENAME} DESTINATION ${EXECTOS_BINARY_DIR}/output/sdk/${DESTINATION})
 endfunction()
@@ -102,11 +146,3 @@ function(set_specfile SPECFILE EXPORTNAME)
     add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${FILENAME}.def ${CMAKE_CURRENT_BINARY_DIR}/${FILENAME}.c
                        COMMAND ${CMAKE_SPEC_COMPILER} -a=${ARCH} -n=${EXPORTNAME} -d=${CMAKE_CURRENT_BINARY_DIR}/${FILENAME}.def -s=${CMAKE_CURRENT_BINARY_DIR}/${FILENAME}.c ${CMAKE_CURRENT_SOURCE_DIR}/${SPECFILE})
 endfunction()
-
-# This function sets the the qemu disk image size (in MiB)
-function(set_disk_image_size SIZE)
-	MATH(EXPR DISK_BLOCKS ${SIZE}*1024*1024/512)
-	MATH(EXPR PART_BLOCKS ${DISK_BLOCKS}-2048)
-	set(PROJECT_DISK_IMAGE_BLOCKS ${DISK_BLOCKS} CACHE INTERNAL "PROJECT_DISK_IMAGE_BLOCKS")
-	set(PROJECT_PART_IMAGE_BLOCKS ${PART_BLOCKS} CACHE INTERNAL "PROJECT_PART_IMAGE_BLOCKS")
-endfunction()

sdk/cmake/toolchain.cmake

@@ -3,8 +3,10 @@ set(CMAKE_SYSTEM_NAME Windows)
 
 # Set toolchain compilers
 set(CMAKE_ASM_COMPILER clang-cl)
+set(CMAKE_ASM_LINKER ld.lld)
 set(CMAKE_C_COMPILER clang-cl)
 set(CMAKE_CXX_COMPILER clang-cl)
+set(CMAKE_LINKER lld-link)
 set(CMAKE_MC_COMPILER wmc)
 set(CMAKE_RC_COMPILER wrc)
 set(CMAKE_SPEC_COMPILER xtcspecc)

sdk/firmware/bochsrc_amd64.cfg

@@ -3,9 +3,9 @@ plugin_ctrl: usb_xhci=false, serial=true, e1000=false, extfpuirq=true, parallel=
 config_interface: textconfig
 display_library: x
 memory: host=64, guest=64
-romimage: file="../sdk/firmware/ovmf_pure_amd64.fd", address=0x00000000, options=none
+romimage: file="../sdk/firmware/rombios.bin", address=0x00000000, options=none
 vgaromimage: file="../sdk/firmware/vgabios.bin"
-boot: floppy
+boot: disk
 floppy_bootsig_check: disabled=0
 floppya: type=1_44
 # no floppyb
@@ -27,11 +27,7 @@ optramimage3: file=none
 optramimage4: file=none
 pci: enabled=1, chipset=i440fx, slot1=cirrus, slot2=none, slot3=none, slot4=none, slot5=none
 vga: extension=cirrus, update_freq=5, realtime=1, ddc=builtin
-cpu: count=1:1:1, ips=400000000, quantum=16, model=bx_generic, reset_on_triple_fault=0, cpuid_limit_winnt=0, ignore_bad_msrs=1, mwait_is_nop=0
+cpu: count=1:1:1, ips=400000000, quantum=16, model=corei7_sandy_bridge_2600k, reset_on_triple_fault=0, cpuid_limit_winnt=0, ignore_bad_msrs=1, mwait_is_nop=0
-cpuid: level=6, stepping=3, model=3, family=6, vendor_string="GenuineIntel", brand_string="              Intel(R) Pentium(R) 4 CPU        "
-cpuid: mmx=true, apic=xapic, simd=sse4_2, sse4a=false, misaligned_sse=false, sep=true
-cpuid: movbe=false, adx=false, aes=false, sha=false, xsave=false, xsaveopt=false, x86_64=true
-cpuid: 1g_pages=false, pcid=false, fsgsbase=false, smep=false, smap=false, mwait=true
 print_timestamps: enabled=0
 port_e9_hack: enabled=0
 private_colormap: enabled=0

sdk/firmware/bochsrc_i686.cfg

@@ -3,9 +3,9 @@ plugin_ctrl: usb_xhci=false, serial=true, e1000=false, extfpuirq=true, parallel=
 config_interface: textconfig
 display_library: x
 memory: host=64, guest=64
-romimage: file="../sdk/firmware/ovmf_pure_i686.fd", address=0x00000000, options=none
+romimage: file="../sdk/firmware/rombios.bin", address=0x00000000, options=none
 vgaromimage: file="../sdk/firmware/vgabios.bin"
-boot: floppy
+boot: disk
 floppy_bootsig_check: disabled=0
 floppya: type=1_44
 # no floppyb
@@ -27,11 +27,7 @@ optramimage3: file=none
 optramimage4: file=none
 pci: enabled=1, chipset=i440fx, slot1=cirrus, slot2=none, slot3=none, slot4=none, slot5=none
 vga: extension=cirrus, update_freq=5, realtime=1, ddc=builtin
-cpu: count=1:1:1, ips=400000000, quantum=16, model=bx_generic, reset_on_triple_fault=0, cpuid_limit_winnt=0, ignore_bad_msrs=1, mwait_is_nop=0
+cpu: count=1:1:1, ips=400000000, quantum=16, model=corei7_sandy_bridge_2600k, reset_on_triple_fault=0, cpuid_limit_winnt=0, ignore_bad_msrs=1, mwait_is_nop=0
-cpuid: level=6, stepping=3, model=3, family=6, vendor_string="GenuineIntel", brand_string="              Intel(R) Pentium(R) 4 CPU        "
-cpuid: mmx=true, apic=xapic, simd=sse4_2, sse4a=false, misaligned_sse=false, sep=true
-cpuid: movbe=false, adx=false, aes=false, sha=false, xsave=false, xsaveopt=false, x86_64=true
-cpuid: 1g_pages=false, pcid=false, fsgsbase=false, smep=false, smap=false, mwait=true
 print_timestamps: enabled=0
 port_e9_hack: enabled=0
 private_colormap: enabled=0

sdk/xtdk/amd64/ketypes.h

@@ -272,11 +272,18 @@ typedef struct _KIDTENTRY
 {
     USHORT OffsetLow;
     USHORT Selector;
-    USHORT IstIndex:3;
+    union
-    USHORT Reserved0:5;
+    {
-    USHORT Type:5;
+        struct
-    USHORT Dpl:2;
+        {
-    USHORT Present:1;
+            USHORT IstIndex:3;
+            USHORT Reserved0:5;
+            USHORT Type:5;
+            USHORT Dpl:2;
+            USHORT Present:1;
+        };
+        USHORT Access;
+    };
     USHORT OffsetMiddle;
     ULONG OffsetHigh;
     ULONG Reserved1;

sdk/xtdk/amd64/mmtypes.h

@@ -25,11 +25,11 @@
 #define MM_PXE_BASE                                0xFFFFF6FB7DBED000ULL
 
 /* Page directory and page base addresses for 5-level paging */
-#define MM_PTE_LA57_BASE                           0xFFFF000000000000ULL
+#define MM_PTE_LA57_BASE                           0xFFED000000000000ULL
-#define MM_PDE_LA57_BASE                           0xFFFF010000000000ULL
+#define MM_PDE_LA57_BASE                           0xFFEDF68000000000ULL
-#define MM_PPE_LA57_BASE                           0xFFFF010800000000ULL
+#define MM_PPE_LA57_BASE                           0xFFEDF6FB40000000ULL
-#define MM_PXE_LA57_BASE                           0xFFFF010840000000ULL
+#define MM_PXE_LA57_BASE                           0xFFEDF6FB7DA00000ULL
-#define MM_P5E_LA57_BASE                           0xFFFF010840200000ULL
+#define MM_P5E_LA57_BASE                           0xFFEDF6FB7DBED000ULL
 
 /* PTE shift values */
 #define MM_PTE_SHIFT                               3
@@ -39,15 +39,55 @@
 #define MM_PXI_SHIFT                               39
 #define MM_P5I_SHIFT                               48
 
-/* Number of PTEs per page */
+/* PTE state flags */
-#define MM_PTE_PER_PAGE                            512
+#define MM_PTE_VALID                               0x0000000000000001ULL
-#define MM_PDE_PER_PAGE                            512
+#define MM_PTE_ACCESSED                            0x0000000000000020ULL
-#define MM_PPE_PER_PAGE                            512
+#define MM_PTE_DIRTY                               0x0000000000000040ULL
-#define MM_PXE_PER_PAGE                            512
+
+/* PTE scope flags */
+#define MM_PTE_LARGE_PAGE                          0x0000000000000080ULL
+#define MM_PTE_GLOBAL                              0x0000000000000100ULL
+
+/* PTE access flags */
+#define MM_PTE_NOACCESS                            0x0000000000000000ULL
+#define MM_PTE_READONLY                            0x0000000000000000ULL
+#define MM_PTE_EXECUTE                             0x0000000000000000ULL
+#define MM_PTE_EXECUTE_READ                        0x0000000000000000ULL
+#define MM_PTE_READWRITE                           0x8000000000000002ULL
+#define MM_PTE_WRITECOPY                           0x8000000000000200ULL
+#define MM_PTE_EXECUTE_READWRITE                   0x0000000000000002ULL
+#define MM_PTE_EXECUTE_WRITECOPY                   0x0000000000000200ULL
+
+/* PTE protection flags */
+#define MM_PTE_NOEXECUTE                           0x8000000000000000ULL
+#define MM_PTE_PROTECT                             0x8000000000000612ULL
+
+/* PTE cache flags */
+#define MM_PTE_CACHE_ENABLE                        0x0000000000000000ULL
+#define MM_PTE_CACHE_DISABLE                       0x0000000000000010ULL
+#define MM_PTE_CACHE_WRITECOMBINED                 0x0000000000000010ULL
+#define MM_PTE_CACHE_WRITETHROUGH                  0x0000000000000008ULL
+
+/* PTE software flags */
+#define MM_PTE_COPY_ON_WRITE                       0x0000000000000200ULL
+#define MM_PTE_PROTOTYPE                           0x0000000000000400ULL
+#define MM_PTE_TRANSITION                          0x0000000000000800ULL
+
+/* PTE frame bits */
+#define MM_PTE_FRAME_BITS                          57
+
+/* PTE protection bits */
+#define MM_PTE_PROTECTION_BITS                     5
+
+/* Base address of the system page table */
+#define MM_SYSTEM_PTE_BASE                         KSEG0_BASE
 
 /* Minimum number of physical pages needed by the system */
 #define MM_MINIMUM_PHYSICAL_PAGES                  2048
 
+/* Number of system PTEs */
+#define MM_DEFAULT_NUMBER_SYSTEM_PTES              22000
+
 /* Default number of secondary colors */
 #define MM_DEFAULT_SECONDARY_COLORS                64
 
@@ -63,6 +103,9 @@
 /* Maximum physical address used by HAL allocations */
 #define MM_MAXIMUM_PHYSICAL_ADDRESS                0x00000000FFFFFFFFULL
 
+/* Highest system address */
+#define MM_HIGHEST_SYSTEM_ADDRESS                  0xFFFFFFFFFFFFFFFFULL
+
 /* Trampoline code address */
 #define MM_TRAMPOLINE_ADDRESS                      0x80000
 
@@ -99,6 +142,7 @@ typedef struct _HARDWARE_PTE
 typedef struct _MMPAGEMAP_INFO
 {
     BOOLEAN Xpa;
+    ULONGLONG EmptyPteList;
     ULONGLONG PteBase;
     ULONGLONG PdeBase;
     ULONGLONG PpeBase;
@@ -252,6 +296,7 @@ typedef struct _MMPFN
             USHORT ReferenceCount;
         } e2;
     } u3;
+    ULONG UsedPageTableEntries;
     union
     {
         MMPTE OriginalPte;
@@ -262,12 +307,11 @@ typedef struct _MMPFN
         ULONG_PTR EntireFrame;
         struct
         {
-            ULONG_PTR PteFrame:58;
+            ULONG_PTR PteFrame:57;
             ULONG_PTR InPageError:1;
             ULONG_PTR VerifierAllocation:1;
             ULONG_PTR AweAllocation:1;
-            ULONG_PTR LockCharged:1;
+            ULONG_PTR Priority:3;
-            ULONG_PTR KernelStack:1;
             ULONG_PTR MustBeCached:1;
         };
     } u4;

sdk/xtdk/i686/ketypes.h

@@ -58,12 +58,6 @@
 #define KIDT_ACCESS_RING0                 0x00
 #define KIDT_ACCESS_RING3                 0x60
 
-/* IDT gate types */
-#define KIDT_TASK                         0x05
-#define KIDT_CALL                         0x0C
-#define KIDT_INTERRUPT                    0x0E
-#define KIDT_TRAP                         0x0F
-
 /* TSS Offsets */
 #define KTSS_ESP0                         0x04
 #define KTSS_CR3                          0x1C
@@ -284,7 +278,18 @@ typedef struct _KIDTENTRY
 {
     USHORT Offset;
     USHORT Selector;
-    USHORT Access;
+    union
+    {
+        struct
+        {
+            UCHAR Reserved;
+            UCHAR Type:4;
+            UCHAR Flag:1;
+            UCHAR Dpl:2;
+            UCHAR Present:1;
+        };
+        USHORT Access;
+    };
     USHORT ExtendedOffset;
 } KIDTENTRY, *PKIDTENTRY;
 

sdk/xtdk/i686/mmtypes.h

@@ -35,9 +35,57 @@
 #define MM_PTE_LEGACY_SHIFT                        2
 #define MM_PDI_LEGACY_SHIFT                        22
 
+/* PTE state flags */
+#define MM_PTE_VALID                               0x00000001
+#define MM_PTE_ACCESSED                            0x00000020
+#define MM_PTE_DIRTY                               0x00000040
+
+/* PTE scope flags */
+#define MM_PTE_LARGE_PAGE                          0x00000080
+#define MM_PTE_GLOBAL                              0x00000100
+
+/* PTE access flags */
+#define MM_PTE_NOACCESS                            0x00000000
+#define MM_PTE_READONLY                            0x00000000
+#define MM_PTE_EXECUTE                             0x00000000
+#define MM_PTE_EXECUTE_READ                        0x00000000
+#define MM_PTE_READWRITE                           0x00000002
+#define MM_PTE_WRITECOPY                           0x00000200
+#define MM_PTE_EXECUTE_READWRITE                   0x00000002
+#define MM_PTE_EXECUTE_WRITECOPY                   0x00000200
+
+/* PTE protection flags */
+#define MM_PTE_NOEXECUTE                           0x00000000
+#define MM_PTE_PROTECT                             0x00000612
+
+/* PTE cache flags */
+#define MM_PTE_CACHE_ENABLE                        0x00000000
+#define MM_PTE_CACHE_DISABLE                       0x00000010
+#define MM_PTE_CACHE_WRITECOMBINED                 0x00000010
+#define MM_PTE_CACHE_WRITETHROUGH                  0x00000008
+
+/* PTE software flags */
+#define MM_PTE_COPY_ON_WRITE                       0x00000200
+#define MM_PTE_PROTOTYPE                           0x00000400
+#define MM_PTE_TRANSITION                          0x00000800
+
+/* PTE frame bits */
+#define MM_PTE_FRAME_BITS                          25
+
+/* PTE protection bits */
+#define MM_PTE_PROTECTION_BITS                     5
+
+/* Base address of the system page table */
+#define MM_SYSTEM_PTE_BASE                         NULLPTR
+
 /* Minimum number of physical pages needed by the system */
 #define MM_MINIMUM_PHYSICAL_PAGES                  1100
 
+/* Number of system PTEs */
+#define MM_MINIMUM_NUMBER_SYSTEM_PTES              7000
+#define MM_DEFAULT_NUMBER_SYSTEM_PTES              11000
+#define MM_MAXIMUM_NUMBER_SYSTEM_PTES              22000
+
 /* Default number of secondary colors */
 #define MM_DEFAULT_SECONDARY_COLORS                64
 
@@ -53,6 +101,9 @@
 /* Maximum physical address used by HAL allocations */
 #define MM_MAXIMUM_PHYSICAL_ADDRESS                0xFFFFFFFF
 
+/* Highest system address */
+#define MM_HIGHEST_SYSTEM_ADDRESS                  0xFFFFFFFF
+
 /* Trampoline code address */
 #define MM_TRAMPOLINE_ADDRESS                      0x80000
 
@@ -106,7 +157,6 @@ typedef struct _HARDWARE_MODERN_PTE
 /* Generic Page Table entry union to abstract PML2 and PML3 formats */
 typedef union _HARDWARE_PTE
 {
-    ULONGLONG Long;
     HARDWARE_LEGACY_PTE Pml2;
     HARDWARE_MODERN_PTE Pml3;
 } HARDWARE_PTE, *PHARDWARE_PTE;
@@ -115,6 +165,7 @@ typedef union _HARDWARE_PTE
 typedef struct _MMPAGEMAP_INFO
 {
     BOOLEAN Xpa;
+    ULONG EmptyPteList;
     ULONG PteBase;
     ULONG PdeBase;
     ULONG PdiShift;
@@ -201,12 +252,12 @@ typedef struct _MMPML2_PTE_TRANSITION
 typedef union _MMPML2_PTE
 {
     ULONG Long;
-    HARDWARE_PTE Flush;
+    HARDWARE_LEGACY_PTE Flush;
-    MMPML2_PTE_HARDWARE Hard;
+    MMPML2_PTE_HARDWARE Hardware;
-    MMPML2_PTE_PROTOTYPE Proto;
+    MMPML2_PTE_PROTOTYPE Prototype;
-    MMPML2_PTE_SOFTWARE Soft;
+    MMPML2_PTE_SOFTWARE Software;
-    MMPML2_PTE_TRANSITION Trans;
+    MMPML2_PTE_TRANSITION Transition;
-    MMPML2_PTE_SUBSECTION Subsect;
+    MMPML2_PTE_SUBSECTION Subsection;
     MMPML2_PTE_LIST List;
 } MMPML2_PTE, *PMMPML2_PTE;
 
@@ -296,7 +347,7 @@ typedef struct _MMPML3_PTE_TRANSITION
 typedef union _MMPML3_PTE
 {
     ULONGLONG Long;
-    HARDWARE_PTE Flush;
+    HARDWARE_MODERN_PTE Flush;
     MMPML3_PTE_HARDWARE Hardware;
     MMPML3_PTE_PROTOTYPE Prototype;
     MMPML3_PTE_SOFTWARE Software;
@@ -308,7 +359,6 @@ typedef union _MMPML3_PTE
 /* Generic Page Table Entry union to abstract PML2 and PML3 formats */
 typedef union _MMPTE
 {
-    ULONGLONG Long;
     MMPML2_PTE Pml2;
     MMPML3_PTE Pml3;
 } MMPTE, *PMMPTE;
@@ -339,6 +389,7 @@ typedef struct _MMPFN
             USHORT ReferenceCount;
         } e2;
     } u3;
+    ULONG UsedPageTableEntries;
     union
     {
         MMPTE OriginalPte;
@@ -349,12 +400,11 @@ typedef struct _MMPFN
         ULONG_PTR EntireFrame;
         struct
         {
-            ULONG_PTR PteFrame:26;
+            ULONG_PTR PteFrame:25;
             ULONG_PTR InPageError:1;
             ULONG_PTR VerifierAllocation:1;
             ULONG_PTR AweAllocation:1;
-            ULONG_PTR LockCharged:1;
+            ULONG_PTR Priority:3;
-            ULONG_PTR KernelStack:1;
             ULONG_PTR MustBeCached:1;
         };
     } u4;

sdk/xtdk/ketypes.h

@@ -150,21 +150,23 @@ typedef enum _KTHREAD_STATE
 typedef enum _KSPIN_LOCK_QUEUE_LEVEL
 {
     DispatcherLock,
-    UnusedSpareLock,
+    ExpansionLock,
     PfnLock,
     SystemSpaceLock,
     VacbLock,
     MasterLock,
-    NonPagedPoolLock,
+    NonPagedAllocPoolLock,
     IoCancelLock,
     WorkQueueLock,
     IoVpbLock,
     IoDatabaseLock,
     IoCompletionLock,
-    FsStructLock,
+    FileSystemLock,
     AfdWorkQueueLock,
     BcbLock,
-    MmNonPagedPoolLock,
+    NonPagedPoolLock,
+    ReservedSystemLock,
+    TimerTableLock,
     MaximumLock
 } KSPIN_LOCK_QUEUE_LEVEL, *PKSPIN_LOCK_QUEUE_LEVEL;
 

sdk/xtdk/mmtypes.h

@@ -4,6 +4,7 @@
  * FILE:            sdk/xtdk/mmtypes.h
  * DESCRIPTION:     Memory management data structures
  * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ *                  Aiken Harris <harraiken91@gmail.com>
  */
 
 #ifndef __XTDK_MMTYPES_H
@@ -13,6 +14,48 @@
 #include ARCH_HEADER(xtstruct.h)
 
 
+/* Number of hyper space pages */
+#define MM_HYPERSPACE_PAGE_COUNT                   255
+
+/* Number of paging colors */
+#define MM_PAGING_COLORS                           64
+
+/* PTE frame mask definition */
+#define MM_PFN_PTE_FRAME                           (((ULONG_PTR)1 << MM_PTE_FRAME_BITS) - 1)
+
+/* Number of reserved zeroed PTEs */
+#define MM_RESERVED_ZERO_PTES                      32
+
+/* Memory manager page lists */
+typedef enum _MMPAGELISTS
+{
+   ZeroedPageList = 0,
+   FreePageList = 1,
+   StandbyPageList = 2,
+   ModifiedPageList = 3,
+   ModifiedReadOnlyPageList = 4,
+   BadPageList = 5,
+   ActiveAndValid = 6,
+   TransitionPage = 7
+} MMPAGELISTS, *PMMPAGELISTS;
+
+/* Page cache attributes */
+typedef enum _MMPFN_CACHE_ATTRIBUTE
+{
+    PfnNonCached,
+    PfnCached,
+    PfnWriteCombined,
+    PfnNotMapped
+} MMPFN_CACHE_ATTRIBUTE, *PMMPFN_CACHE_ATTRIBUTE;
+
+/* Page table pool types */
+typedef enum _MMSYSTEM_PTE_POOL_TYPE
+{
+    SystemPteSpace,
+    NonPagedPoolExpansion,
+    MaximumPtePoolTypes
+} MMSYSTEM_PTE_POOL_TYPE, *PMMSYSTEM_PTE_POOL_TYPE;
+
 /* Page map routines structure definition */
 typedef CONST STRUCT _CMMPAGEMAP_ROUTINES
 {
@@ -30,6 +73,22 @@ typedef struct _MMCOLOR_TABLES
     ULONG_PTR Count;
 } MMCOLOR_TABLES, *PMMCOLOR_TABLES;
 
+/* Memory layout structure definition */
+typedef struct _MMMEMORY_LAYOUT
+{
+    PMMPFN PfnDatabaseAddress;
+    PVOID SelfMapAddress;
+    PVOID HyperSpaceStart;
+    PVOID HyperSpaceEnd;
+    PVOID NonPagedPoolStart;
+    PVOID NonPagedPoolEnd;
+    PVOID PagedPoolStart;
+    PVOID PagedPoolEnd;
+    PVOID SystemSpaceStart;
+    PVOID SystemSpaceEnd;
+    PVOID UserSpaceEnd;
+} MMMEMORY_LAYOUT, *PMMMEMORY_LAYOUT;
+
 /* Page Frame Entry structure definition */
 typedef struct _MMPFNENTRY
 {
@@ -45,4 +104,13 @@ typedef struct _MMPFNENTRY
     USHORT ParityError:1;
 } MMPFNENTRY, *PMMPFNENTRY;
 
+/* Page Frame List structure definition */
+typedef struct _MMPFNLIST
+{
+    PFN_NUMBER Total;
+    MMPAGELISTS ListName;
+    PFN_NUMBER Flink;
+    PFN_NUMBER Blink;
+} MMPFNLIST, *PMMPFNLIST;
+
 #endif /* __XTDK_MMTYPES_H */

sdk/xtdk/xtbase.h

@@ -29,6 +29,9 @@ typedef UCHAR KRUNLEVEL, *PKRUNLEVEL;
 /* Spin locks synchronization mechanism */
 typedef ULONG_PTR KSPIN_LOCK, *PKSPIN_LOCK;
 
+/* Page Frame Number count */
+typedef ULONG PFN_COUNT;
+
 /* Page Frame Number */
 typedef ULONG_PTR PFN_NUMBER, *PPFN_NUMBER;
 

sdk/xtdk/xtcompat.h

@@ -12,17 +12,31 @@
 
 #ifdef __cplusplus
     /* C++ definitions */
-    #define XTCLINK         extern "C"
     #define NULLPTR         nullptr
+    #define VIRTUAL         virtual
+    #define XTCLINK         extern "C"
 
-    /* C++ types */
+    /* C++ boolean type */
+    typedef bool BOOLEAN, *PBOOLEAN;
+    #define TRUE true
+    #define FALSE false
+
+    /* C++ widechar type */
     typedef wchar_t wchar;
 #else
     /* C definitions */
-    #define XTCLINK
     #define NULLPTR         ((void *)0)
+    #define VIRTUAL
+    #define XTCLINK
 
-    /* C types */
+    /* C boolean type */
+    typedef enum _BOOLEAN
+    {
+        FALSE = 0,
+        TRUE = 1
+    } BOOLEAN, *PBOOLEAN;
+
+    /* C widechar type */
     typedef unsigned short wchar;
 #endif
 

sdk/xtdk/xtstruct.h

@@ -14,7 +14,6 @@
 
 /* Enumeration lists forward references */
 typedef enum _ADJUST_REASON ADJUST_REASON, *PADJUST_REASON;
-typedef enum _BOOLEAN BOOLEAN, *PBOOLEAN;
 typedef enum _EXCEPTION_DISPOSITION EXCEPTION_DISPOSITION, *PEXCEPTION_DISPOSITION;
 typedef enum _EFI_ALLOCATE_TYPE EFI_ALLOCATE_TYPE, *PEFI_ALLOCATE_TYPE;
 typedef enum _EFI_FRAMEWORK_CPU_DESIGNATION EFI_FRAMEWORK_CPU_DESIGNATION, *PEFI_FRAMEWORK_CPU_DESIGNATION;
@@ -49,6 +48,9 @@ typedef enum _KTHREAD_STATE KTHREAD_STATE, *PKTHREAD_STATE;
 typedef enum _KTIMER_TYPE KTIMER_TYPE, *PKTIMER_TYPE;
 typedef enum _KUBSAN_DATA_TYPE KUBSAN_DATA_TYPE, *PKUBSAN_DATA_TYPE;
 typedef enum _LOADER_MEMORY_TYPE LOADER_MEMORY_TYPE, *PLOADER_MEMORY_TYPE;
+typedef enum _MMPAGELISTS MMPAGELISTS, *PMMPAGELISTS;
+typedef enum _MMPFN_CACHE_ATTRIBUTE MMPFN_CACHE_ATTRIBUTE, *PMMPFN_CACHE_ATTRIBUTE;
+typedef enum _MMSYSTEM_PTE_POOL_TYPE MMSYSTEM_PTE_POOL_TYPE, *PMMSYSTEM_PTE_POOL_TYPE;
 typedef enum _MODE MODE, *PMODE;
 typedef enum _RTL_VARIABLE_TYPE RTL_VARIABLE_TYPE, *PRTL_VARIABLE_TYPE;
 typedef enum _SYSTEM_FIRMWARE_TYPE SYSTEM_FIRMWARE_TYPE, *PSYSTEM_FIRMWARE_TYPE;
@@ -275,7 +277,9 @@ typedef struct _LOADER_INFORMATION_BLOCK LOADER_INFORMATION_BLOCK, *PLOADER_INFO
 typedef struct _LOADER_MEMORY_DESCRIPTOR LOADER_MEMORY_DESCRIPTOR, *PLOADER_MEMORY_DESCRIPTOR;
 typedef struct _M128 M128, *PM128;
 typedef struct _MMCOLOR_TABLES MMCOLOR_TABLES, *PMMCOLOR_TABLES;
+typedef struct _MMMEMORY_LAYOUT MMMEMORY_LAYOUT, *PMMMEMORY_LAYOUT;
 typedef struct _MMPFNENTRY MMPFNENTRY, *PMMPFNENTRY;
+typedef struct _MMPFNLIST MMPFNLIST, *PMMPFNLIST;
 typedef struct _PCAT_FIRMWARE_INFORMATION PCAT_FIRMWARE_INFORMATION, *PPCAT_FIRMWARE_INFORMATION;
 typedef struct _PCI_BRIDGE_CONTROL_REGISTER PCI_BRIDGE_CONTROL_REGISTER, *PPCI_BRIDGE_CONTROL_REGISTER;
 typedef struct _PCI_COMMON_CONFIG PCI_COMMON_CONFIG, *PPCI_COMMON_CONFIG;

sdk/xtdk/xttypes.h

@@ -150,13 +150,6 @@ typedef LPCWSTR PCTSTR, LPCTSTR;
 typedef LPUWSTR PUTSTR, LPUTSTR;
 typedef LPCUWSTR PCUTSTR, LPCUTSTR;
 
-/* Boolean type */
-typedef enum _BOOLEAN
-{
-    FALSE = 0,
-    TRUE = 1
-} BOOLEAN, *PBOOLEAN;
-
 /* 128-bit floats structure */
 typedef struct _FLOAT128
 {

xtldr/includes/globals.hh

@@ -1,51 +0,0 @@
-/**
- * PROJECT:         ExectOS
- * COPYRIGHT:       See COPYING.md in the top level directory
- * FILE:            xtldr/includes/globals.hh
- * DESCRIPTION:     XTLDR global variables
- * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
- */
-
-#ifndef __XTLDR_GLOBALS_HH
-#define __XTLDR_GLOBALS_HH
-
-#include <xtblapi.h>
-
-
-/* XT Boot Loader registered boot protocol list */
-EXTERN LIST_ENTRY BlpBootProtocols;
-
-/* XT Boot Loader serial ports list */
-EXTERN ULONG BlComPortList[COMPORT_COUNT];
-
-/* XT Boot Loader configuration list */
-EXTERN LIST_ENTRY BlpConfig;
-
-/* XT Boot Loader loaded configuration */
-EXTERN LIST_ENTRY BlpConfigSections;
-
-/* List of user-editable boot options */
-EXTERN PCWSTR BlpEditableConfigOptions[];
-
-/* XT Boot Loader protocol */
-EXTERN XTBL_LOADER_PROTOCOL BlpLdrProtocol;
-
-/* XT Boot Loader loaded modules list */
-EXTERN LIST_ENTRY BlpLoadedModules;
-
-/* XT Boot Loader menu list */
-EXTERN PLIST_ENTRY BlpMenuList;
-
-/* XT Boot Loader status data */
-EXTERN XTBL_STATUS BlpStatus;
-
-/* List of available block devices */
-EXTERN LIST_ENTRY EfiBlockDevices;
-
-/* EFI Image Handle */
-EXTERN EFI_HANDLE EfiImageHandle;
-
-/* EFI System Table */
-EXTERN PEFI_SYSTEM_TABLE EfiSystemTable;
-
-#endif /* __XTLDR_GLOBALS_HH */

xtoskrnl/CMakeLists.txt

@@ -51,14 +51,18 @@ list(APPEND XTOSKRNL_SOURCE
     ${XTOSKRNL_SOURCE_DIR}/ke/spinlock.cc
     ${XTOSKRNL_SOURCE_DIR}/ke/sysres.cc
     ${XTOSKRNL_SOURCE_DIR}/ke/timer.cc
-    ${XTOSKRNL_SOURCE_DIR}/mm/${ARCH}/init.cc
+    ${XTOSKRNL_SOURCE_DIR}/mm/${ARCH}/mmgr.cc
     ${XTOSKRNL_SOURCE_DIR}/mm/${ARCH}/pagemap.cc
     ${XTOSKRNL_SOURCE_DIR}/mm/${ARCH}/paging.cc
+    ${XTOSKRNL_SOURCE_DIR}/mm/${ARCH}/pte.cc
+    ${XTOSKRNL_SOURCE_DIR}/mm/colors.cc
     ${XTOSKRNL_SOURCE_DIR}/mm/data.cc
     ${XTOSKRNL_SOURCE_DIR}/mm/hlpool.cc
-    ${XTOSKRNL_SOURCE_DIR}/mm/init.cc
     ${XTOSKRNL_SOURCE_DIR}/mm/kpool.cc
+    ${XTOSKRNL_SOURCE_DIR}/mm/mmgr.cc
     ${XTOSKRNL_SOURCE_DIR}/mm/paging.cc
+    ${XTOSKRNL_SOURCE_DIR}/mm/pfn.cc
+    ${XTOSKRNL_SOURCE_DIR}/mm/pte.cc
     ${XTOSKRNL_SOURCE_DIR}/po/idle.cc
     ${XTOSKRNL_SOURCE_DIR}/rtl/${ARCH}/dispatch.cc
     ${XTOSKRNL_SOURCE_DIR}/rtl/${ARCH}/exsup.cc
@@ -82,11 +86,12 @@ add_library(libxtos ${XTOSKRNL_SOURCE})
 
 # Link kernel executable
 add_executable(xtoskrnl
-               ${XTOSKRNL_SOURCE}
                ${CMAKE_CURRENT_BINARY_DIR}/xtoskrnl.def)
 
 # Add linker libraries
-target_link_libraries(xtoskrnl)
+target_link_libraries(xtoskrnl
+                      PRIVATE
+                      libxtos)
 
 # Set proper binary name and install target
 set_target_properties(xtoskrnl PROPERTIES SUFFIX .exe)

xtoskrnl/README.md

@@ -4,8 +4,20 @@ within the XTOS kernel space. It is responsible for various core services, such
 management, and process scheduling. The kernel contains the scheduler (sometimes referred to as the Dispatcher), the
 cache, object, and memory managers, the security manager, and other executive components described below.
 
-All routines in the kernel are prefixed to indicate the subsystem they belong to, and their source code is organized
+
-into corresponding directories. These subsystems include:
+## Kernel Parameters
+Kernel parameters are XTOS boot-time options used to ensure proper initialization and handling of hardware peripherals.
+These parameters can be configured either temporarily by editing the boot entry in the bootloader’s selection menu, or
+permanently by modifying the XTLDR configuration file.
+
+The following is a consolidated list of available kernel parameters:
+ * **NOXPA**: Disables PAE or LA57 support, depending on the CPU architecture. This parameter is handled by the
+   bootloader, which configures paging and selects the appropriate Page Map Level (PML) before transferring control to
+   the kernel.
+
+## Source Code
+The source code of the kernel is organized into subsystem-specific directories. Each directory name also defines the
+corresponding C++ namespace in which the subsystem's classes and routines reside. These subsystems include:
 
  * Ar - Architecture-specific Library
  * Ex - Kernel Executive
@@ -56,13 +68,20 @@ routines, for use by other kernel components.
 
 ## Function Naming Convention
 All kernel functions adhere to a strict naming convention to enhance code readability and maintainability. The structure
-of a function name is generally composed of three parts: <Prefix><Operation><Object>
+of all public interfaces exposed by the kernel are generally composed of three parts:
+<Prefix><Operation><Object>
 
-The prefix identifies the component to which the function belongs. Additionally, the prefix indicates the function's
+The prefix identifies the component to which the function belongs. For example, consider the **KeInitializeThread()**
-visibility. Private functions, which should not be called from outside their own module, have a 'p' appended to their
+routine:
-prefix.
+ * **Ke** - The prefix indicates a routine belonging to the Core Kernel Library (Ke).
-
-For example, consider the **KepInitializeStack()** routine:
- * **Kep** - The prefix indicates a private (p) routine belonging to the Core Kernel Library (Ke).
  * **Initialize** - The operation performed by the function.
- * **Stack** - The object on which the operation is performed.
+ * **Thread** - The object on which the operation is performed.
+
+For all C++ code inside the kernel the naming model has evolved. Consider the **KE::KThread::InitializeThread()**
+routine:
+ * **KE** - The namespace replaces the prefix and indicates the subsystem. Namespaces are written in uppercase and no
+   longer use the trailing p for private routines, because classes use C++ visibility to control access.
+ * **KThread** - Within each namespace, related functionality is grouped into classes, which encapsulate variables and
+   methods.
+ * **InitializeThread** - Method names follow the `<Operation><Object>` pattern.
+ 

xtoskrnl/ar/amd64/procsup.cc

@@ -249,34 +249,34 @@ AR::ProcSup::InitializeIdt(IN PKPROCESSOR_BLOCK ProcessorBlock)
     for(Vector = 0; Vector < IDT_ENTRIES; Vector++)
     {
         /* Set the IDT to handle unexpected interrupts */
-        SetIdtGate(ProcessorBlock->IdtBase, Vector, (PVOID)ArTrap0xFF, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0);
+        SetIdtGate(ProcessorBlock->IdtBase, Vector, (PVOID)ArTrap0xFF, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_INTERRUPT_GATE);
     }
 
     /* Setup IDT handlers for known interrupts and traps */
-    SetIdtGate(ProcessorBlock->IdtBase, 0x00, (PVOID)ArTrap0x00, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x00, (PVOID)ArTrap0x00, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x01, (PVOID)ArTrap0x01, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x01, (PVOID)ArTrap0x01, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x02, (PVOID)ArTrap0x02, KGDT_R0_CODE, KIDT_IST_PANIC, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x02, (PVOID)ArTrap0x02, KGDT_R0_CODE, KIDT_IST_PANIC, KIDT_ACCESS_RING0, AMD64_INTERRUPT_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x03, (PVOID)ArTrap0x03, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING3);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x03, (PVOID)ArTrap0x03, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING3, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x04, (PVOID)ArTrap0x04, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING3);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x04, (PVOID)ArTrap0x04, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING3, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x05, (PVOID)ArTrap0x05, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x05, (PVOID)ArTrap0x05, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x06, (PVOID)ArTrap0x06, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x06, (PVOID)ArTrap0x06, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x07, (PVOID)ArTrap0x07, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x07, (PVOID)ArTrap0x07, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x08, (PVOID)ArTrap0x08, KGDT_R0_CODE, KIDT_IST_PANIC, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x08, (PVOID)ArTrap0x08, KGDT_R0_CODE, KIDT_IST_PANIC, KIDT_ACCESS_RING0, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x09, (PVOID)ArTrap0x09, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x09, (PVOID)ArTrap0x09, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x0A, (PVOID)ArTrap0x0A, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x0A, (PVOID)ArTrap0x0A, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x0B, (PVOID)ArTrap0x0B, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x0B, (PVOID)ArTrap0x0B, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x0C, (PVOID)ArTrap0x0C, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x0C, (PVOID)ArTrap0x0C, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x0D, (PVOID)ArTrap0x0D, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x0D, (PVOID)ArTrap0x0D, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x0E, (PVOID)ArTrap0x0E, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x0E, (PVOID)ArTrap0x0E, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x10, (PVOID)ArTrap0x10, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x10, (PVOID)ArTrap0x10, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x11, (PVOID)ArTrap0x11, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x11, (PVOID)ArTrap0x11, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x12, (PVOID)ArTrap0x12, KGDT_R0_CODE, KIDT_IST_MCA, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x12, (PVOID)ArTrap0x12, KGDT_R0_CODE, KIDT_IST_MCA, KIDT_ACCESS_RING0, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x13, (PVOID)ArTrap0x13, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x13, (PVOID)ArTrap0x13, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x1F, (PVOID)ArTrap0x1F, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x1F, (PVOID)ArTrap0x1F, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_INTERRUPT_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x2C, (PVOID)ArTrap0x2C, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING3);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x2C, (PVOID)ArTrap0x2C, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING3, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x2D, (PVOID)ArTrap0x2D, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING3);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x2D, (PVOID)ArTrap0x2D, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING3, AMD64_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x2F, (PVOID)ArTrap0x2F, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x2F, (PVOID)ArTrap0x2F, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_INTERRUPT_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0xE1, (PVOID)ArTrap0xE1, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0xE1, (PVOID)ArTrap0xE1, KGDT_R0_CODE, KIDT_IST_RESERVED, KIDT_ACCESS_RING0, AMD64_INTERRUPT_GATE);
 }
 
 /**
@@ -636,6 +636,9 @@ AR::ProcSup::SetGdtEntryBase(IN PKGDTENTRY Gdt,
  * @param Access
  *        Supplies the gate access rights.
  *
+ * @param Type
+ *        Supplies the gate type.
+ *
  * @return This routine does not return any value.
  *
  * @since XT 1.0
@@ -647,15 +650,22 @@ AR::ProcSup::SetIdtGate(IN PKIDTENTRY Idt,
                         IN PVOID Handler,
                         IN USHORT Selector,
                         IN USHORT Ist,
-                        IN USHORT Access)
+                        IN USHORT Dpl,
+                        IN USHORT Type)
 {
-    /* Setup the gate */
+    /* Set the handler's address */
     Idt[Vector].OffsetLow = ((ULONG_PTR)Handler & 0xFFFF);
     Idt[Vector].OffsetMiddle = (((ULONG_PTR)Handler >> 16) & 0xFFFF);
     Idt[Vector].OffsetHigh = (ULONG_PTR)Handler >> 32;
-    Idt[Vector].Dpl = Access;
+
+    /* Set the code segment selector */
+    Idt[Vector].Selector = Selector;
+
+    /* Initialize the gate's attributes and flags */
+    Idt[Vector].Access = 0;
+    Idt[Vector].Dpl = Dpl;
     Idt[Vector].IstIndex = Ist;
     Idt[Vector].Present = 1;
-    Idt[Vector].Selector = Selector;
+    Idt[Vector].Reserved1 = 0;
-    Idt[Vector].Type = 0xE;
+    Idt[Vector].Type = Type;
 }

xtoskrnl/ar/amd64/traps.cc

@@ -23,6 +23,25 @@ XTCDECL
 VOID
 AR::Traps::DispatchTrap(IN PKTRAP_FRAME TrapFrame)
 {
+    DebugPrint(L"Caught trap: 0x%.2llX with error code: %.4llX at RIP: 0x%.16llX\n"
+               L"RAX: 0x%.16llX, RBX: 0x%.16llX, RCX: 0x%.16llX, RDX: 0x%.16llX\n"
+               L"R8:  0x%.16llX, R9:  0x%.16llX, R10: 0x%.16llX, R11: 0x%.16llX\n"
+               L"R12: 0x%.16llX, R13: 0x%.16llX, R14: 0x%.16llX, R15: 0x%.16llX\n"
+               L"RBP: 0x%.16llX, RSP: 0x%.16llX, RDI: 0x%.16llX, RSI: 0x%.16llX\n"
+               L"DR0: 0x%.16llX, DR1: 0x%.16llX, DR2: 0x%.16llX, DR3: 0x%.16llX\n"
+               L"DR6: 0x%.16llX, DR7: 0x%.16llX\n"
+               L"CR2: 0x%.16llX, CR3: 0x%.16llX, CS:  0x%.16llX, DS:  0x%.16hX\n"
+               L"ES:  0x%.16hX, FS:  0x%.16hX, GS:  0x%.16hX, SS:  0x%.16llX\n",
+               TrapFrame->Vector, TrapFrame->ErrorCode, TrapFrame->Rip,
+               TrapFrame->Rax, TrapFrame->Rbx, TrapFrame->Rcx, TrapFrame->Rdx,
+               TrapFrame->R8, TrapFrame->R9, TrapFrame->R10, TrapFrame->R11,
+               TrapFrame->R12, TrapFrame->R13, TrapFrame->R14, TrapFrame->R15,
+               TrapFrame->Rbp, TrapFrame->Rsp, TrapFrame->Rdi, TrapFrame->Rsi,
+               TrapFrame->Dr0, TrapFrame->Dr1, TrapFrame->Dr2, TrapFrame->Dr3,
+               TrapFrame->Dr6, TrapFrame->Dr7,
+               TrapFrame->Cr2, TrapFrame->Cr3, TrapFrame->SegCs, TrapFrame->SegDs,
+               TrapFrame->SegEs, TrapFrame->SegFs, TrapFrame->SegGs, TrapFrame->SegSs);
+
     /* Check vector and call appropriate handler */
     switch(TrapFrame->Vector)
     {
@@ -172,7 +191,7 @@ VOID
 AR::Traps::HandleTrap00(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Division-By-Zero Error (0x00)!\n");
-    for(;;);
+    KE::Crash::Panic(0x00);
 }
 
 /**
@@ -190,7 +209,7 @@ VOID
 AR::Traps::HandleTrap01(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Debug exception (0x01)!\n");
-    for(;;);
+    KE::Crash::Panic(0x01);
 }
 
 /**
@@ -208,7 +227,7 @@ VOID
 AR::Traps::HandleTrap02(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Non-Maskable-Interrupt (0x02)!\n");
-    for(;;);
+    KE::Crash::Panic(0x02);
 }
 
 /**
@@ -226,7 +245,7 @@ VOID
 AR::Traps::HandleTrap03(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled INT3 (0x03)!\n");
-    for(;;);
+    KE::Crash::Panic(0x03);
 }
 
 /**
@@ -244,7 +263,7 @@ VOID
 AR::Traps::HandleTrap04(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Overflow exception (0x04)!\n");
-    for(;;);
+    KE::Crash::Panic(0x04);
 }
 
 /**
@@ -262,7 +281,7 @@ VOID
 AR::Traps::HandleTrap05(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Bound-Range-Exceeded exception (0x05)!\n");
-    for(;;);
+    KE::Crash::Panic(0x05);
 }
 
 /**
@@ -280,7 +299,7 @@ VOID
 AR::Traps::HandleTrap06(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Invalid Opcode exception (0x06)!\n");
-    for(;;);
+    KE::Crash::Panic(0x06);
 }
 
 /**
@@ -298,7 +317,7 @@ VOID
 AR::Traps::HandleTrap07(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Device Not Available exception (0x07)!\n");
-    for(;;);
+    KE::Crash::Panic(0x07);
 }
 
 /**
@@ -316,7 +335,7 @@ VOID
 AR::Traps::HandleTrap08(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Double-Fault exception (0x08)!\n");
-    for(;;);
+    KE::Crash::Panic(0x08);
 }
 
 /**
@@ -334,7 +353,7 @@ VOID
 AR::Traps::HandleTrap09(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Segment-Overrun exception (0x09)!\n");
-    for(;;);
+    KE::Crash::Panic(0x09);
 }
 
 /**
@@ -352,7 +371,7 @@ VOID
 AR::Traps::HandleTrap0A(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Invalid-TSS exception (0x0A)!\n");
-    for(;;);
+    KE::Crash::Panic(0x0A);
 }
 
 /**
@@ -370,7 +389,7 @@ VOID
 AR::Traps::HandleTrap0B(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Segment-Not-Present exception (0x0B)!\n");
-    for(;;);
+    KE::Crash::Panic(0x0B);
 }
 
 /**
@@ -388,7 +407,7 @@ VOID
 AR::Traps::HandleTrap0C(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Stack-Segment-Fault exception (0x0C)!\n");
-    for(;;);
+    KE::Crash::Panic(0x0C);
 }
 
 /**
@@ -406,7 +425,7 @@ VOID
 AR::Traps::HandleTrap0D(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled General-Protection-Fault (0x0D)!\n");
-    for(;;);
+    KE::Crash::Panic(0x0D);
 }
 
 /**
@@ -424,7 +443,7 @@ VOID
 AR::Traps::HandleTrap0E(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Page-Fault exception (0x0E)!\n");
-    for(;;);
+    KE::Crash::Panic(0x0E);
 }
 
 /**
@@ -442,7 +461,7 @@ VOID
 AR::Traps::HandleTrap10(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled x87 Floating-Point exception (0x10)!\n");
-    for(;;);
+    KE::Crash::Panic(0x10);
 }
 
 /**
@@ -460,7 +479,7 @@ VOID
 AR::Traps::HandleTrap11(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Alignment-Check exception (0x11)!\n");
-    for(;;);
+    KE::Crash::Panic(0x11);
 }
 
 /**
@@ -478,7 +497,7 @@ VOID
 AR::Traps::HandleTrap12(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Machine-Check exception (0x12)!\n");
-    for(;;);
+    KE::Crash::Panic(0x12);
 }
 
 /**
@@ -496,7 +515,7 @@ VOID
 AR::Traps::HandleTrap13(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled SIMD Floating-Point exception (0x13)!\n");
-    for(;;);
+    KE::Crash::Panic(0x13);
 }
 
 /**
@@ -531,7 +550,7 @@ VOID
 AR::Traps::HandleTrap2C(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Assertion (0x2C)!\n");
-    for(;;);
+    KE::Crash::Panic(0x2C);
 }
 
 /**
@@ -549,7 +568,7 @@ VOID
 AR::Traps::HandleTrap2D(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Debug-Service-Request (0x2D)!\n");
-    for(;;);
+    KE::Crash::Panic(0x2D);
 }
 
 /**
@@ -601,7 +620,7 @@ VOID
 AR::Traps::HandleTrapFF(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Unexpected-Interrupt (0xFF)!\n");
-    for(;;);
+    KE::Crash::Panic(0xFF);
 }
 
 /**

xtoskrnl/ar/i686/procsup.cc

@@ -242,34 +242,34 @@ AR::ProcSup::InitializeIdt(IN PKPROCESSOR_BLOCK ProcessorBlock)
     for(Vector = 0; Vector < IDT_ENTRIES; Vector++)
     {
         /* Set the IDT to handle unexpected interrupts */
-        SetIdtGate(ProcessorBlock->IdtBase, Vector, (PVOID)ArTrap0xFF, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING0);
+        SetIdtGate(ProcessorBlock->IdtBase, Vector, (PVOID)ArTrap0xFF, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_INTERRUPT_GATE);
     }
 
     /* Setup IDT handlers for known interrupts and traps */
-    SetIdtGate(ProcessorBlock->IdtBase, 0x00, (PVOID)ArTrap0x00, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x00, (PVOID)ArTrap0x00, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x01, (PVOID)ArTrap0x01, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x01, (PVOID)ArTrap0x01, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x02, (PVOID)ArTrap0x02, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x02, (PVOID)ArTrap0x02, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_INTERRUPT_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x03, (PVOID)ArTrap0x03, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING3);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x03, (PVOID)ArTrap0x03, KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x04, (PVOID)ArTrap0x04, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING3);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x04, (PVOID)ArTrap0x04, KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x05, (PVOID)ArTrap0x05, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x05, (PVOID)ArTrap0x05, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x06, (PVOID)ArTrap0x06, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x06, (PVOID)ArTrap0x06, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x07, (PVOID)ArTrap0x07, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x07, (PVOID)ArTrap0x07, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x08, (PVOID)ArTrap0x08, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x08, (PVOID)ArTrap0x08, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x09, (PVOID)ArTrap0x09, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x09, (PVOID)ArTrap0x09, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x0A, (PVOID)ArTrap0x0A, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x0A, (PVOID)ArTrap0x0A, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x0B, (PVOID)ArTrap0x0B, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x0B, (PVOID)ArTrap0x0B, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x0C, (PVOID)ArTrap0x0C, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x0C, (PVOID)ArTrap0x0C, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x0D, (PVOID)ArTrap0x0D, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x0D, (PVOID)ArTrap0x0D, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x0E, (PVOID)ArTrap0x0E, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x0E, (PVOID)ArTrap0x0E, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x10, (PVOID)ArTrap0x10, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x10, (PVOID)ArTrap0x10, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x11, (PVOID)ArTrap0x11, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x11, (PVOID)ArTrap0x11, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x12, (PVOID)ArTrap0x12, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x12, (PVOID)ArTrap0x12, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x13, (PVOID)ArTrap0x13, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING0);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x13, (PVOID)ArTrap0x13, KGDT_R0_CODE, 0, KIDT_ACCESS_RING0, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x2A, (PVOID)ArTrap0x2A, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING3);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x2A, (PVOID)ArTrap0x2A, KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x2B, (PVOID)ArTrap0x2B, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING3);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x2B, (PVOID)ArTrap0x2B, KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x2C, (PVOID)ArTrap0x2C, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING3);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x2C, (PVOID)ArTrap0x2C, KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x2D, (PVOID)ArTrap0x2D, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING3);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x2D, (PVOID)ArTrap0x2D, KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
-    SetIdtGate(ProcessorBlock->IdtBase, 0x2E, (PVOID)ArTrap0x2E, KGDT_R0_CODE, 0, KIDT_INTERRUPT | KIDT_ACCESS_RING3);
+    SetIdtGate(ProcessorBlock->IdtBase, 0x2E, (PVOID)ArTrap0x2E, KGDT_R0_CODE, 0, KIDT_ACCESS_RING3, I686_TRAP_GATE);
 }
 
 /**
@@ -656,6 +656,9 @@ AR::ProcSup::SetGdtEntryBase(IN PKGDTENTRY Gdt,
  * @param Access
  *        Supplies the gate access rights.
  *
+ * @param Type
+ *        Supplies the gate type.
+ *
  * @return This routine does not return any value.
  *
  * @since XT 1.0
@@ -667,13 +670,21 @@ AR::ProcSup::SetIdtGate(IN PKIDTENTRY Idt,
                         IN PVOID Handler,
                         IN USHORT Selector,
                         IN USHORT Ist,
-                        IN USHORT Access)
+                        IN USHORT Dpl,
+                        IN USHORT Type)
 {
-    /* Setup the gate */
+    /* Set the handler's address */
     Idt[Vector].Offset = (USHORT)((ULONG)Handler & 0xFFFF);
     Idt[Vector].ExtendedOffset = (USHORT)((ULONG)Handler >> 16);
-    Idt[Vector].Access = 0x8000 | (Access << 8);
+
+    /* Set the code segment selector */
     Idt[Vector].Selector = Selector;
+
+    /* Initialize the gate's attributes and flags */
+    Idt[Vector].Access = 0;
+    Idt[Vector].Dpl = Dpl;
+    Idt[Vector].Present = 1;
+    Idt[Vector].Type = Type;
 }
 
 /**

xtoskrnl/ar/i686/traps.cc

@@ -23,6 +23,21 @@ XTCDECL
 VOID
 AR::Traps::DispatchTrap(IN PKTRAP_FRAME TrapFrame)
 {
+    DebugPrint(L"Caught trap: 0x%.2lX with error code: %.4lX at EIP: 0x%.8lX\n"
+               L"EAX: 0x%.8lX, EBX: 0x%.8lX, ECX: 0x%.8lX, EDX: 0x%.8lX\n"
+               L"EBP: 0x%.8lX, ESP: 0x%.8lX, EDI: 0x%.8lX, ESI: 0x%.8lX\n"
+               L"DR0: 0x%.8lX, DR1: 0x%.8lX, DR2: 0x%.8lX, DR3: 0x%.8lX\n"
+               L"DR6: 0x%.8lX, DR7: 0x%.8lX\n"
+               L"CR2: 0x%.8lX, CR3: 0x%.8lX, CS:  0x%.8lX, DS:  0x%.8hX\n"
+               L"ES:  0x%.8hX, FS:  0x%.8hX, GS:  0x%.8hX, SS:  0x%.8lX\n",
+               TrapFrame->Vector, TrapFrame->ErrorCode, TrapFrame->Eip,
+               TrapFrame->Eax, TrapFrame->Ebx, TrapFrame->Ecx, TrapFrame->Edx,
+               TrapFrame->Ebp, TrapFrame->Esp, TrapFrame->Edi, TrapFrame->Esi,
+               TrapFrame->Dr0, TrapFrame->Dr1, TrapFrame->Dr2, TrapFrame->Dr3,
+               TrapFrame->Dr6, TrapFrame->Dr7,
+               TrapFrame->Cr2, TrapFrame->Cr3, TrapFrame->SegCs, TrapFrame->SegDs,
+               TrapFrame->SegEs, TrapFrame->SegFs, TrapFrame->SegGs, TrapFrame->SegSs);
+
     /* Check vector and call appropriate handler */
     switch(TrapFrame->Vector)
     {
@@ -144,7 +159,7 @@ VOID
 AR::Traps::HandleTrap00(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Division-By-Zero Error (0x00)!\n");
-    for(;;);
+    KE::Crash::Panic(0x00);
 }
 
 /**
@@ -162,7 +177,7 @@ VOID
 AR::Traps::HandleTrap01(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Debug exception (0x01)!\n");
-    for(;;);
+    KE::Crash::Panic(0x01);
 }
 
 /**
@@ -180,7 +195,7 @@ VOID
 AR::Traps::HandleTrap02(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Non-Maskable-Interrupt (0x02)!\n");
-    for(;;);
+    KE::Crash::Panic(0x02);
 }
 
 /**
@@ -198,7 +213,7 @@ VOID
 AR::Traps::HandleTrap03(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled INT3 (0x03)!\n");
-    for(;;);
+    KE::Crash::Panic(0x03);
 }
 
 /**
@@ -216,7 +231,7 @@ VOID
 AR::Traps::HandleTrap04(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Overflow exception (0x04)!\n");
-    for(;;);
+    KE::Crash::Panic(0x04);
 }
 
 /**
@@ -234,7 +249,7 @@ VOID
 AR::Traps::HandleTrap05(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Bound-Range-Exceeded exception (0x05)!\n");
-    for(;;);
+    KE::Crash::Panic(0x05);
 }
 
 /**
@@ -252,7 +267,7 @@ VOID
 AR::Traps::HandleTrap06(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Invalid Opcode exception (0x06)!\n");
-    for(;;);
+    KE::Crash::Panic(0x06);
 }
 
 /**
@@ -270,7 +285,7 @@ VOID
 AR::Traps::HandleTrap07(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Device Not Available exception (0x07)!\n");
-    for(;;);
+    KE::Crash::Panic(0x07);
 }
 
 /**
@@ -288,7 +303,7 @@ VOID
 AR::Traps::HandleTrap08(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Double-Fault exception (0x08)!\n");
-    for(;;);
+    KE::Crash::Panic(0x08);
 }
 
 /**
@@ -306,7 +321,7 @@ VOID
 AR::Traps::HandleTrap09(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Segment-Overrun exception (0x09)!\n");
-    for(;;);
+    KE::Crash::Panic(0x09);
 }
 
 /**
@@ -324,7 +339,7 @@ VOID
 AR::Traps::HandleTrap0A(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Invalid-TSS exception (0x0A)!\n");
-    for(;;);
+    KE::Crash::Panic(0x0A);
 }
 
 /**
@@ -342,7 +357,7 @@ VOID
 AR::Traps::HandleTrap0B(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Segment-Not-Present exception (0x0B)!\n");
-    for(;;);
+    KE::Crash::Panic(0x0B);
 }
 
 /**
@@ -360,7 +375,7 @@ VOID
 AR::Traps::HandleTrap0C(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Stack-Segment-Fault exception (0x0C)!\n");
-    for(;;);
+    KE::Crash::Panic(0x0C);
 }
 
 /**
@@ -378,7 +393,7 @@ VOID
 AR::Traps::HandleTrap0D(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled General-Protection-Fault (0x0D)!\n");
-    for(;;);
+    KE::Crash::Panic(0x0D);
 }
 
 /**
@@ -396,7 +411,7 @@ VOID
 AR::Traps::HandleTrap0E(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Page-Fault exception (0x0E)!\n");
-    for(;;);
+    KE::Crash::Panic(0x0E);
 }
 
 /**
@@ -414,7 +429,7 @@ VOID
 AR::Traps::HandleTrap10(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled x87 Floating-Point exception (0x10)!\n");
-    for(;;);
+    KE::Crash::Panic(0x10);
 }
 
 /**
@@ -432,7 +447,7 @@ VOID
 AR::Traps::HandleTrap11(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Alignment-Check exception (0x11)!\n");
-    for(;;);
+    KE::Crash::Panic(0x11);
 }
 
 /**
@@ -450,7 +465,7 @@ VOID
 AR::Traps::HandleTrap12(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Machine-Check exception (0x12)!\n");
-    for(;;);
+    KE::Crash::Panic(0x12);
 }
 
 /**
@@ -468,7 +483,7 @@ VOID
 AR::Traps::HandleTrap13(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled SIMD Floating-Point exception (0x13)!\n");
-    for(;;);
+    KE::Crash::Panic(0x13);
 }
 
 /**
@@ -520,7 +535,7 @@ VOID
 AR::Traps::HandleTrap2C(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Assertion (0x2C)!\n");
-    for(;;);
+    KE::Crash::Panic(0x2C);
 }
 
 /**
@@ -538,7 +553,7 @@ VOID
 AR::Traps::HandleTrap2D(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Debug-Service-Request (0x2D)!\n");
-    for(;;);
+    KE::Crash::Panic(0x2D);
 }
 
 /**
@@ -573,7 +588,7 @@ VOID
 AR::Traps::HandleTrapFF(IN PKTRAP_FRAME TrapFrame)
 {
     DebugPrint(L"Handled Unexpected-Interrupt (0xFF)!\n");
-    for(;;);
+    KE::Crash::Panic(0xFF);
 }
 
 /**

xtoskrnl/includes/ar/amd64/procsup.hh

@@ -67,7 +67,8 @@ namespace AR
                                          IN PVOID Handler,
                                          IN USHORT Selector,
                                          IN USHORT Ist,
-                                         IN USHORT Access);
+                                         IN USHORT Dpl,
+                                         IN USHORT Type);
     };
 }
 

xtoskrnl/includes/ar/i686/procsup.hh

@@ -72,7 +72,8 @@ namespace AR
                                          IN PVOID Handler,
                                          IN USHORT Selector,
                                          IN USHORT Ist,
-                                         IN USHORT Access);
+                                         IN USHORT Dpl,
+                                         IN USHORT Type);
             STATIC XTAPI VOID SetNonMaskableInterruptTssEntry(IN PKPROCESSOR_BLOCK ProcessorBlock,
                                                               IN PVOID KernelFaultStack);
 

xtoskrnl/includes/ke/runlevel.hh

@@ -22,6 +22,48 @@ namespace KE
             STATIC XTFASTCALL VOID LowerRunLevel(IN KRUNLEVEL RunLevel);
             STATIC XTFASTCALL KRUNLEVEL RaiseRunLevel(IN KRUNLEVEL RunLevel);
     };
+
+    class LowerRunLevel
+    {
+        private:
+            KRUNLEVEL PreviousRunLevel;
+
+        public:
+            LowerRunLevel(KRUNLEVEL RunLevel)
+            {
+                PreviousRunLevel = KE::RunLevel::GetCurrentRunLevel();
+                KE::RunLevel::LowerRunLevel(RunLevel);
+            }
+
+            ~LowerRunLevel()
+            {
+                KE::RunLevel::RaiseRunLevel(PreviousRunLevel);
+            }
+
+            LowerRunLevel(const LowerRunLevel&) = delete;
+            LowerRunLevel& operator=(const LowerRunLevel&) = delete;
+    };
+
+    class RaiseRunLevel
+    {
+        private:
+            KRUNLEVEL PreviousRunLevel;
+
+        public:
+            RaiseRunLevel(KRUNLEVEL RunLevel)
+            {
+                PreviousRunLevel = KE::RunLevel::GetCurrentRunLevel();
+                KE::RunLevel::RaiseRunLevel(RunLevel);
+            }
+
+            ~RaiseRunLevel()
+            {
+                KE::RunLevel::LowerRunLevel(PreviousRunLevel);
+            }
+
+            RaiseRunLevel(const RaiseRunLevel&) = delete;
+            RaiseRunLevel& operator=(const RaiseRunLevel&) = delete;
+    };
 }
 
 #endif /* __XTOSKRNL_KE_RUNLEVEL_HH */