arch/i386/gdt.s

@@ -0,0 +1,17 @@
+; This file is written with Intel ASM Syntax.
+
+[GLOBAL load_gdt]    ; Allows the C code to call gdt_flush().
+[EXTERN gp]
+load_gdt:
+     ; Get the pointer to the GDT, passed as a parameter.
+    lgdt [gp]        ; Load the new GDT pointer
+
+    mov ax, 0x10      ; 0x10 is the offset in the GDT to our data segment
+    mov ds, ax        ; Load all data segment selectors
+    mov es, ax
+    mov fs, ax
+    mov gs, ax
+    mov ss, ax
+    jmp 0x08:flush   ; 0x08 is the offset to our code segment: Far jump!
+flush:
+    ret

arch/i386/isr.s

@@ -0,0 +1,135 @@
+%macro ISR 1
+	global isr%1
+	isr%1:
+		cli
+		push byte 0
+		push byte %1
+		jmp isr_common
+%endmacro
+
+%macro ISR_ERR 1
+	global isr%1
+	isr%1:
+		cli 
+		push byte %1
+		jmp isr_common
+%endmacro
+
+%macro IRQ 2
+	global irq%1
+	irq%1:
+		cli
+		push byte 0
+		push byte %2
+		jmp irq_common
+%endmacro
+
+ISR 0
+ISR 1
+ISR 2
+ISR 3
+ISR 4
+ISR 5
+ISR 6
+ISR 7
+ISR_ERR 8
+ISR 9
+ISR_ERR 10
+ISR_ERR 11
+ISR_ERR 12
+ISR_ERR 13
+ISR_ERR 14
+ISR 15
+ISR 16
+ISR_ERR 17
+ISR 18
+ISR 19
+ISR 20
+ISR 21
+ISR 22
+ISR 23
+ISR 24
+ISR 25
+ISR 26
+ISR 27
+ISR 28
+ISR 29
+ISR_ERR 30
+ISR 31
+
+IRQ 0, 32
+IRQ 1, 33
+IRQ 2, 34
+IRQ 3, 35
+IRQ 4, 36
+IRQ 5, 37
+IRQ 6, 38
+IRQ 7, 39
+IRQ 8, 40
+IRQ 9, 41
+IRQ 10, 42
+IRQ 11, 43
+IRQ 12, 44
+IRQ 13, 45
+IRQ 14, 46
+IRQ 15, 47
+	
+extern fault_handler
+
+isr_common:
+	pusha
+	push ds
+	push es
+	push fs
+	push gs
+	mov ax, 0x10
+	mov ds, ax
+	mov es, ax
+	mov fs, ax
+	mov gs, ax
+	mov eax, esp
+	push eax
+	
+	mov eax, fault_handler
+	call eax
+	
+	pop eax
+	pop gs
+	pop fs
+	pop es
+	pop ds
+	popa
+	add esp, 8
+	iret
+
+extern irq_handler
+
+irq_common:
+	pusha
+	push ds
+	push es
+	push fs
+	push gs
+	mov ax, 0x10
+	mov ds, ax
+	mov es, ax
+	mov fs, ax
+	mov gs, ax
+	mov eax, esp
+	push eax
+	mov eax, irq_handler
+	call eax
+	pop eax
+	pop gs
+	pop fs
+	pop es
+	pop ds
+	popa
+	add esp, 8
+	iret
+
+global idt_load
+extern idtp
+idt_load:
+	lidt [idtp]
+	ret

arch/i386/sys_clock.c

@@ -1,12 +1,3 @@
-/************************
- *** Team Kitty, 2019 ***
- ***       Sync       ***
- ***********************/
- 
-/* This file provides an interface to
- * the hardware timer / RTC. Not much
- * more to be said about it. */
-
 #include <kernel/utils.h>
 #include <kernel.h>
 #include <kernel/serial.h>

arch/i386/tty.c

@@ -1,18 +1,3 @@
-/************************
- *** Team Kitty, 2019 ***
- ***       Sync       ***
- ***********************/
- 
- /* This file provides all of the functionality
-  * needed to interact with the Text-Mode VGA
-  * buffer, which will soon be defunct due to
-  * EFI and graphics.
-  * 
-  * This file will be left for the forseeable
-  * future, because it allows for easy debugging.
-  * 17/07/19 Curle
-  */
-
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>

kernel/descriptor_tables.c

@@ -1,6 +1,6 @@
 /************************
  *** Team Kitty, 2019 ***
- ***       Sync       ***
+ ***    ProjectRED    ***
  ***********************/
 
 /* This file combines the implementation

kernel/interrupts.c

@@ -1,6 +1,6 @@
 /************************
  *** Team Kitty, 2019 ***
- ***       Sync       ***
+ *******ProjectRED*******
  ***********************/
 
 /* This file contains all of the ISR and IRQ

kernel/kernel.c

@@ -1,16 +1,8 @@
 /************************
  *** Team Kitty, 2019 ***
- ***       Sync       ***
+ ***    ProjectRED    ***
  ***********************/
 
-/* This file contains the entry point
- * to the kernel. This section consists
- * mainly of bootloading functions.
- *
- * Graphics and memory will be setup
- * at later stages.
- */
- 
 //#include <stdio.h>
 #include <kernel.h>
 #include <kernel/tty.h>
@@ -68,10 +60,11 @@ int kernel_main(void) {
 	serial_print(0x3F8, "[INFO] All subsystems ready. Printing message.\r\n");
 	
 	/* Everything is ready; print a pretty message. */
-	term_setcolor(RED);
 	term_writes("\n(c)");
 	term_setcolor(GREEN);
-	term_writes(" Sync");
+	term_writes(" Project");
+	term_setcolor(RED);
+	term_writes("RED");
 	term_setcolor(WHITE);
 	term_writes(", 2019\n");
 	

kernel/serial.c

@@ -1,13 +1,3 @@
-/************************
- *** Team Kitty, 2019 ***
- ***       Sync       ***
- ***********************/
- 
- /* This file provides an interface to the serial port.
-  * Most emulators allow the serial port to be saved into
-  * a text buffer, or a file, but this code should work on 
-  * hardware with an actual serial port and monitor. */
-
 #include <kernel/utils.h>
 #include <stdarg.h>
 #include <stdint.h>

kernel/utils.c

@@ -1,15 +1,7 @@
 /************************
  *** Team Kitty, 2019 ***
- ***       Sync       ***
+ ***    ProjectRED    ***
  ***********************/
- 
-/* This file contains utility functions
- * for the kernel and OS to use. They 
- * will be naturally optimized through
- * the run of development, and thus are
- * to be used scarcely until a more
- * permanent solution can be found.
- */
 
 #include <kernel/utils.h>
 #include <kernel/tty.h>