Change: build process & makefile, tree restructuration

src/loader.s

@@ -0,0 +1,440 @@
+global loader
+
+section .__mbHeader
+
+align 0x4
+section .text:
+
+MAGIC_NUMBER      equ 0x1BADB002   ; multiboot magic 
+FLAGS             equ 0x0 
+CHECKSUM          equ -MAGIC_NUMBER
+KERNEL_STACK_SIZE equ 4096
+
+  dd MAGIC_NUMBER
+  dd FLAGS
+  dd CHECKSUM
+
+extern kmain
+
+loader:
+  cli
+  ; mov eax, 0xCAFEBABE
+  push dword 42
+  call kmain
+
+.loop:
+  jmp .loop
+
+global gdt_flush
+extern gp
+
+gdt_flush:
+	lgdt [gp]
+	mov ax, 0x10
+	mov ds, ax
+	mov es, ax
+	mov fs, ax
+	mov gs, ax
+	mov ss, ax
+	jmp 0x08:flush2
+
+flush2:
+	ret
+
+global idt_load
+extern idtp
+
+idt_load:
+	lidt [idtp]
+	ret
+
+global isr0
+global isr1
+global isr2
+global isr3
+global isr4
+global isr5
+global isr6
+global isr7
+global isr8
+global isr9
+global isr10
+global isr11
+global isr12
+global isr13
+global isr14
+global isr15
+global isr16
+global isr17
+global isr18
+global isr19
+global isr20
+global isr21
+global isr22
+global isr23
+global isr24
+global isr25
+global isr26
+global isr27
+global isr28
+global isr29
+global isr30
+global isr31
+
+; Interrupt service routine exceptions
+isr0:
+	cli
+	push byte 0
+	push byte 0
+	jmp isr_common_stub
+
+isr1:
+	cli
+	push byte 0
+	push byte 1
+	jmp isr_common_stub
+
+isr2:
+	cli
+	push byte 0
+	push byte 2
+	jmp isr_common_stub
+
+isr3:
+	cli
+	push byte 0
+	push byte 3
+	jmp isr_common_stub
+
+isr4:
+	cli
+	push byte 0
+	push byte 4
+	jmp isr_common_stub
+
+isr5:
+	cli
+	push byte 0
+	push byte 5
+	jmp isr_common_stub
+
+isr6:
+	cli
+	push byte 0
+	push byte 6
+	jmp isr_common_stub
+
+isr7:
+	cli
+	push byte 0
+	push byte 7
+	jmp isr_common_stub
+
+isr8:
+	cli
+	push byte 8
+	jmp isr_common_stub
+
+isr9:
+	cli
+	push byte 0
+	push byte 9
+	jmp isr_common_stub
+
+isr10:
+	cli
+	push byte 10
+	jmp isr_common_stub
+
+isr11:
+	cli
+	push byte 11
+	jmp isr_common_stub
+
+isr12:
+	cli
+	push byte 12
+	jmp isr_common_stub
+
+isr13:
+	cli
+	push byte 13
+	jmp isr_common_stub
+
+isr14:
+	cli
+	push byte 14
+	jmp isr_common_stub
+
+isr15:
+	cli
+	push byte 0
+	push byte 15
+	jmp isr_common_stub
+
+isr16:
+	cli
+	push byte 0
+	push byte 16
+	jmp isr_common_stub
+
+isr17:
+	cli
+	push byte 0
+	push byte 17
+	jmp isr_common_stub
+
+isr18:
+	cli
+	push byte 0
+	push byte 18
+	jmp isr_common_stub
+
+isr19:
+	cli
+	push byte 0
+	push byte 19
+	jmp isr_common_stub
+
+isr20:
+	cli
+	push byte 0
+	push byte 20
+	jmp isr_common_stub
+
+isr21:
+	cli
+	push byte 0
+	push byte 21
+	jmp isr_common_stub
+
+isr22:
+	cli
+	push byte 0
+	push byte 22
+	jmp isr_common_stub
+
+isr23:
+	cli
+	push byte 0
+	push byte 23
+	jmp isr_common_stub
+
+isr24:
+	cli
+	push byte 0
+	push byte 24
+	jmp isr_common_stub
+
+isr25:
+	cli
+	push byte 0
+	push byte 25
+	jmp isr_common_stub
+
+isr26:
+	cli
+	push byte 0
+	push byte 26
+	jmp isr_common_stub
+
+isr27:
+	cli
+	push byte 0
+	push byte 27
+	jmp isr_common_stub
+
+isr28:
+	cli
+	push byte 0
+	push byte 28
+	jmp isr_common_stub
+
+isr29:
+	cli
+	push byte 0
+	push byte 29
+	jmp isr_common_stub
+
+isr30:
+	cli
+	push byte 0
+	push byte 30
+	jmp isr_common_stub
+
+isr31:
+	cli
+	push byte 0
+	push byte 31
+	jmp isr_common_stub
+
+extern fault_handler
+
+isr_common_stub:
+	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
+
+global irq0
+global irq1
+global irq2
+global irq3
+global irq4
+global irq5
+global irq6
+global irq7
+global irq8
+global irq9
+global irq10
+global irq11
+global irq12
+global irq13
+global irq14
+global irq15
+
+irq0:
+	cli
+	push byte 0
+	push byte 32
+	jmp irq_common_stub
+
+irq1:
+	cli
+	push byte 0
+	push byte 33
+	jmp irq_common_stub
+
+irq2:
+	cli
+	push byte 0
+	push byte 34
+	jmp irq_common_stub
+
+irq3:
+	cli
+	push byte 0
+	push byte 35
+	jmp irq_common_stub
+
+irq4:
+	cli
+	push byte 0
+	push byte 36
+	jmp irq_common_stub
+
+irq5:
+	cli
+	push byte 0
+	push byte 37
+	jmp irq_common_stub
+
+irq6:
+	cli
+	push byte 0
+	push byte 38
+	jmp irq_common_stub
+
+irq7:
+	cli
+	push byte 0
+	push byte 39
+	jmp irq_common_stub
+
+irq8:
+	cli
+	push byte 0
+	push byte 40
+	jmp irq_common_stub
+
+irq9:
+	cli
+	push byte 0
+	push byte 41
+	jmp irq_common_stub
+
+irq10:
+	cli
+	push byte 0
+	push byte 42
+	jmp irq_common_stub
+
+irq11:
+	cli
+	push byte 0
+	push byte 43
+	jmp irq_common_stub
+
+irq12:
+	cli
+	push byte 0
+	push byte 44
+	jmp irq_common_stub
+
+irq13:
+	cli
+	push byte 0
+	push byte 45
+	jmp irq_common_stub
+
+irq14:
+	cli
+	push byte 0
+	push byte 46
+	jmp irq_common_stub
+
+irq15:
+	cli
+	push byte 0
+	push byte 47
+	jmp irq_common_stub
+
+extern irq_handler
+
+irq_common_stub:
+	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
+
+section .bss
+align 4 
+kernel_stack:
+  resb KERNEL_STACK_SIZE
+  mov esp, kernel_stack + KERNEL_STACK_SIZE