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Merge remote-tracking branch 'Kernel/master'

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EnderIce2
2024-11-20 05:00:33 +02:00
parent 93d408e0af 19f2a78d35
commit 682c84b2af
468 changed files with 112800 additions and 1 deletions
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81
Kernel/arch/i386/bootstrap/Multiboot/helper/detect.s Normal file
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/*
This file is part of Fennix Kernel.
Fennix Kernel is free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of
the License, or (at your option) any later version.
Fennix Kernel is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
*/
.intel_syntax noprefix
.code32
.section .bootstrap.text, "a"
.global DetectCPUID
DetectCPUID:
pushfd
pop eax
mov ecx, eax
xor eax, 1 << 21
push eax
popfd
pushfd
pop eax
push ecx
popfd
xor eax, ecx
jz .NoCPUID
mov eax, 1
ret
.NoCPUID:
xor eax, eax
ret
.global Detect64Bit
Detect64Bit:
mov eax, 0x80000000
cpuid
cmp eax, 0x80000001
jb .NoLongMode
mov eax, 0x80000001
cpuid
test edx, 1 << 29
jz .NoLongMode
mov eax, 1
ret
.NoLongMode:
xor eax, eax
ret
.global DetectPSE
DetectPSE:
mov eax, 0x00000001
cpuid
test edx, 0x00000008
jz .NoPSE
mov eax, 1
ret
.NoPSE:
xor eax, eax
ret
.global DetectPAE
DetectPAE:
mov eax, 0x00000001
cpuid
test edx, 0x00000040
jz .NoPAE
mov eax, 1
ret
.NoPAE:
xor eax, eax
ret

64
Kernel/arch/i386/bootstrap/Multiboot/helper/gdt32.s Normal file
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/*
This file is part of Fennix Kernel.
Fennix Kernel is free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of
the License, or (at your option) any later version.
Fennix Kernel is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
*/
.code32
.section .bootstrap.text, "a"
.align 32
.global gdtr
gdtr:
.word GDT32_END - GDT32 - 1
.long GDT32
.align 32
GDT32:
.quad 0x0
.word 0xFFFF
.word 0x0000
.byte 0x00
.word 0xCF9A
.byte 0x00
.word 0xFFFF
.word 0x0000
.byte 0x00
.word 0xCF92
.byte 0x00
.word 0x0100
.word 0x1000
.byte 0x00
.word 0x4092
.byte 0x00
GDT32_END:
nop
.global LoadGDT32
LoadGDT32:
lgdt [gdtr]
ljmp $0x8, $ActivateGDT
ActivateGDT:
mov $0x10, %cx
mov %cx, %ss
mov %cx, %ds
mov %cx, %es
mov %cx, %fs
mov $0x18, %cx
mov %cx, %gs
ret