feat(kernel): cga text mode driver
This commit is contained in:
parent
baaeda937f
commit
7fcb200475
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@ -12,7 +12,11 @@ SRCS = kernel.asm \
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lock.inc \
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gdt.inc \
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isr.inc \
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pic.inc
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pic.inc \
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idt.inc \
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dev/at/pit.inc \
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dev/at/cga.inc \
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dev/at/kbd.inc
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.PHONY: all
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all: $(KERNEL)
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131
kernel/dev/at/cga.inc
Normal file
131
kernel/dev/at/cga.inc
Normal file
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@ -0,0 +1,131 @@
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;; File: cga.inc
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;;
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;; Usefull links:
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;; - <http://www.techhelpmanual.com/901-color_graphics_adapter_i_o_ports.html>
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;; - <http://www.osdever.net/FreeVGA/vga/crtcreg.htm>
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CGA_MEMORY = 0xC00B8000
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CGA_COMMAND = 0x3d4
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CGA_DATA = 0x3d5
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CGA_CURSOR_HIGH = 0xE
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CGA_CURSOR_LOW = 0xF
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CGA_COLUMNS = 80
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CGA_LINES = 24
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;; Function: cga_getpos
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;;
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;; Out:
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;; AX - cursor position
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cga_getpos:
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; read cursor position
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xor ax, ax
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xchg bx, bx
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; get high
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mov dx, CGA_COMMAND
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mov al, CGA_CURSOR_HIGH
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out dx, al
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mov dx, CGA_DATA
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in al, dx
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xchg al, ah
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; get low
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mov dx, CGA_COMMAND
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mov al, CGA_CURSOR_LOW
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out dx, al
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mov dx, CGA_DATA
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in al, dx
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ret
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;; Function: cga_setpos
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;;
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;; In:
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;; AX - cursor position
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cga_setpos:
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xchg bx, bx
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mov dx, CGA_COMMAND
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push ax
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mov al, CGA_CURSOR_HIGH
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out dx, al
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pop ax
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xchg al, ah
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mov dx, CGA_DATA
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out dx, al
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mov dx, CGA_COMMAND
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mov al, CGA_CURSOR_LOW
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out dx, al
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xchg al, ah
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mov dx, CGA_DATA
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out dx, al
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ret
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;; Function: cga_putc
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;;
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;; In:
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;; AL - charactere to print
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cga_putc:
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push ebp
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mov ebp, esp
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sub esp, 0x2
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push eax
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call cga_getpos
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mov [ebp-0x2], ax
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pop eax
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cmp al, LF
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jne @f
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mov ax, [ebp-0x2]
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mov dl, CGA_COLUMNS
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div dl
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mov al, CGA_COLUMNS
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sub al, ah
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xor ah, ah
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mov cx, [ebp-0x2]
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add cx, ax
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jmp .end
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@@:
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mov edx, CGA_MEMORY
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xor ecx, ecx
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mov cx, [ebp-0x2]
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shl cx, 1
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add edx, ecx
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mov ah, 0x07
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mov word [edx], ax
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mov cx, [ebp-0x2]
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inc cx
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mov ax, cx
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mov dl, CGA_COLUMNS
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div dl
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cmp al, CGA_LINES
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jbe .end
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mov [ebp-0x2], cx
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; scroll up
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push esi
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push edi
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mov ecx, CGA_COLUMNS*(CGA_LINES-1)
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mov edi, CGA_MEMORY
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mov esi, CGA_MEMORY+80*2
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rep movsw
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mov ecx, CGA_COLUMNS
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xor ax, ax
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mov edi, CGA_MEMORY+(CGA_COLUMNS*(CGA_LINES-1)*2)
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rep stosw
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pop esi
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pop edi
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mov cx, CGA_COLUMNS*(CGA_LINES-1)
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.end:
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mov ax, cx
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call cga_setpos
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leave
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ret
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18
kernel/dev/at/kbd.inc
Normal file
18
kernel/dev/at/kbd.inc
Normal file
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@ -0,0 +1,18 @@
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;; File: kbd.inc
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kbd_getc:
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ret
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kbd_irq:
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pusha
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mov esi, szMsgKbdIRQ
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call klog
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mov al, PIC_EOI
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out PIC1_COMMAND, al
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popa
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iret
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szMsgKbdIRQ db "KBD: IRQ", 0
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29
kernel/dev/at/pit.inc
Normal file
29
kernel/dev/at/pit.inc
Normal file
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@ -0,0 +1,29 @@
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;; File: pit.inc
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;;
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;; Usefull links:
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;; - <http://www.osdever.net/bkerndev/Docs/pit.htm>
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PIT_CHANNEL0 = 0x40
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PIT_CHANNEL1 = 0x40
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PIT_CHANNEL2 = 0x42
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PIT_COMMAND = 0x43
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;; Function: pit_init
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pit_init:
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ret
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;; Function: pit_irq
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pit_irq:
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pusha
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;mov esi, szMsgPitIRQ
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;call klog
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mov al, PIC_EOI
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out PIC1_COMMAND, al
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popa
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iret
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szMsgPitIRQ db "PIT: IRQ", 0
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2
kernel/dev/console.inc
Normal file
2
kernel/dev/console.inc
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@ -0,0 +1,2 @@
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;; File: console.inc
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9
kernel/dev/dev.inc
Normal file
9
kernel/dev/dev.inc
Normal file
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@ -0,0 +1,9 @@
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;; File: dev.inc
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struc Device {
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.write dd ?
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.read dd ?
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}
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@ -1,3 +1,4 @@
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;; File: gdt.inc
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gdt:
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; null descriptor
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@ -30,3 +31,7 @@ gdt:
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pGDT:
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dw gdt.end - gdt - 1
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dd gdt
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gdt_set_tss:
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ret
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@ -1,10 +1,51 @@
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;; File: idt.inc
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idt_set_table:
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idt_set_gate:
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mov [aInterruptGate + (ecx * 8)], ax
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mov [aInterruptGate + (ecx * 8) + 2], word 0x08
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mov [aInterruptGate + (ecx * 8) + 5], word 0x8E
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shr eax, 16
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mov [aInterruptGate + (ecx * 8) + 6], ax
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ret
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idt_setup:
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xor ecx, ecx
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@@:
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mov eax, [aISRTable + (ecx * 4)]
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call idt_set_gate
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inc ecx
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cmp ecx, 32
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jb @b
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mov eax, pit_irq
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call idt_set_gate
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inc ecx
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mov eax, kbd_irq
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call idt_set_gate
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inc ecx
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@@:
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mov eax, irq_dummy
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call idt_set_gate
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inc ecx
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cmp ecx, 0x30
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jb @b
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mov ecx, 0x42
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mov eax, isr_syscall
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call idt_set_gate
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lidt [pIDT]
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sti
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ret
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pIdt:
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dw ?
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dd ?
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pIDT:
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dw aInterruptGate.end-aInterruptGate-1
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dd aInterruptGate
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; variable: idt_entries
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aInterruptGate:
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dd 256*2 dup(0)
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.end:
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@ -0,0 +1,2 @@
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irq_dummy:
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iret
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@ -18,54 +18,6 @@ forward
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}
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idt_setup:
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xor ecx, ecx
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@@:
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mov eax, [aISRTable + (ecx * 4)]
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mov [aInterruptGate + (ecx * 8)], ax
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mov [aInterruptGate + (ecx * 8) + 2], word 0x08
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mov [aInterruptGate + (ecx * 8) + 5], word 0x8E
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shr eax, 16
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mov [aInterruptGate + (ecx * 8) + 6], ax
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inc ecx
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cmp ecx, 32
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jb @b
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@@:
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mov eax, irq_dummy
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mov [aInterruptGate + (ecx * 8)], ax
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mov [aInterruptGate + (ecx * 8) + 2], word 0x08
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mov [aInterruptGate + (ecx * 8) + 5], word 0x8E
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shr eax, 16
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mov [aInterruptGate + (ecx * 8) + 6], ax
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inc ecx
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cmp ecx, 0x30
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jb @b
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mov ecx, 0x42
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mov eax, isr_syscall
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mov [aInterruptGate + (ecx * 8)], ax
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mov [aInterruptGate + (ecx * 8) + 2], word 0x08
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mov [aInterruptGate + (ecx * 8) + 5], word 0x8E
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shr eax, 16
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mov [aInterruptGate + (ecx * 8) + 6], ax
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lidt [pIDT]
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sti
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ret
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pIDT:
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dw aInterruptGate.end-aInterruptGate-1
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dd aInterruptGate
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; variable: idt_entries
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aInterruptGate:
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dd 256*2 dup(0)
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.end:
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irq_dummy:
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iret
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@ -60,10 +60,15 @@ kmain:
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lgdt [pGDT]
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; I don't think i need to reload segment cuz their value are already correct
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call idt_setup
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;int 0x42
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call pit_init
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mov eax, SYSCALL_EXIT
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int 0x42
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mov al, 'X'
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call cga_putc
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.halt:
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hlt
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@ -81,7 +86,11 @@ kmain:
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include 'gdt.inc'
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include 'syscall.inc'
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include 'isr.inc'
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include 'idt.inc'
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include 'pic.inc'
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include 'dev/at/pit.inc'
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include 'dev/at/kbd.inc'
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include 'dev/at/cga.inc'
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szMsgKernelAlive db "Kernel (", VERSION_FULL , ") is alive", 0
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@ -34,7 +34,7 @@ klog_print:
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or al, al
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jz @f
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out dx, al
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;call klog_kputc
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;call klog_kput
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jmp @b
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@@:
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ret
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@ -1,3 +1,6 @@
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;; File: coff.inc
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;; Struc: COFFFileHdr
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struc COFFFileHdr {
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.f_magic dw ?
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.f_nscns dw ?
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@ -16,10 +16,21 @@ rc4_init:
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mov ebp, esp
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mov eax, [ebp+8]
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xor ecx, ecx
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xor cx, cx
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.loop:
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@@:
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mov byte [eax], byte cx
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inc cx
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inc eax
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cmp cx, 255
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jne @b
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xor cx, cx
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mov eax, [ebp+8]
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@@:
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.end:
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leave
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ret
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@ -1,131 +1,131 @@
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;; File: sha256.asm
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;; SHA-256 cryptographic hash
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; Implementation is based on <Wikipedia's pseudocode at https://en.wikipedia.org/wiki/SHA-2#Pseudocode>
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format COFF
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use32
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section '.data' data
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; Constant: K
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; SHA-256 round constants
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K:
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dd 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5
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dd 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174
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dd 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da
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dd 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967
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dd 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85
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dd 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070
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dd 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3
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dd 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
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section '.text' code
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;; Function: sha256_compute_block
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sha256_compute_block:
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push ebp
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mov ebp, esp
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leave
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ret
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;; Function: sha256_internal
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;;
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;; Parameters:
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;;
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;; [esp+8] - state
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;; [esp+12] - input buffer
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;; [esp+16] - size of the input buffer
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;;
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sha256_internal:
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push ebp
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push edi
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mov ebp, esp
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sub esp, 64+8
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mov eax, dword [ebp+16]
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xor edx, edx
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; set padlen to (len << 3)
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shld edx, eax, 3 ; 64-bit left shit
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sal eax, 3
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mov dword [ebp-(64+8)], eax
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mov dword [ebp-(64+4)], edx
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.for_block:
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cmp dword [ebp+16], 64
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jb .done
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push dword [ebp+12] ; push in
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push dword [ebp+8] ; push state
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call sha256_compute_block
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add esp, 8
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sub dword [ebp+16], 64 ; len -= 64
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add dword [ebp+12], 64 ; in += 64
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jmp .for_block
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.done:
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; ensure padding buffer is full of zero
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lea edi, [ebp-64]
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mov ecx, 16
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xor eax, eax
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rep stosd
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pop edi
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leave
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ret
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;; Function: sha256
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;;
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;; Parameters:
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;;
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;; [esp+8] - output buffer
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;; [esp+12] - input buffer
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;; [esp+16] - size of the input buffer
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;;
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public sha256
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sha256:
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push ebp
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mov ebp, esp
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sub esp, 8*4 ; uint32_t state[8]
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; setup initial state
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mov dword [ebp-8*4], 0x6a09e667
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mov dword [ebp-7*4], 0xbb67ae85
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mov dword [ebp-6*4], 0x3c6ef372
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mov dword [ebp-5*4], 0xa54ff53a
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mov dword [ebp-4*4], 0x510e527f
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mov dword [ebp-3*4], 0x9b05688c
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mov dword [ebp-2*4], 0x1f83d9ab
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mov dword [ebp-1*4], 0x5be0cd19
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;
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; copy state to uint8_t *out
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mov edx, dword [ebp+8]
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mov eax, dword [ebp-8*4]
|
||||
bswap eax
|
||||
mov dword [edx], eax ; out[0] = bswap(state[0])
|
||||
mov eax, dword [ebp-7*4]
|
||||
bswap eax
|
||||
mov dword [edx+4], eax ; out[1] = bswap(state[1])
|
||||
mov eax, dword [ebp-6*4]
|
||||
bswap eax
|
||||
mov dword [edx+8], eax ; out[2] = bswap(state[2])
|
||||
mov eax, dword [ebp-5*4]
|
||||
bswap eax
|
||||
mov dword [edx+12], eax ; out[3] = bswap(state[3])
|
||||
mov eax, dword [ebp-4*4]
|
||||
bswap eax
|
||||
mov dword [edx+16], eax ; out[4] = bswap(state[4])
|
||||
mov eax, dword [ebp-3*4]
|
||||
bswap eax
|
||||
mov dword [edx+20], eax ; out[5] = bswap(state[5])
|
||||
mov eax, dword [ebp-2*4]
|
||||
bswap eax
|
||||
mov dword [edx+24], eax ; out[6] = bswap(state[6])
|
||||
mov eax, dword [ebp-1*4]
|
||||
bswap eax
|
||||
mov dword [edx+28], eax ; out[7] = bswap(state[7])
|
||||
leave
|
||||
ret
|
||||
;; File: sha256.asm
|
||||
;; SHA-256 cryptographic hash
|
||||
|
||||
; Implementation is based on <Wikipedia's pseudocode at https://en.wikipedia.org/wiki/SHA-2#Pseudocode>
|
||||
format COFF
|
||||
use32
|
||||
|
||||
section '.data' data
|
||||
; Constant: K
|
||||
; SHA-256 round constants
|
||||
K:
|
||||
dd 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5
|
||||
dd 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174
|
||||
dd 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da
|
||||
dd 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967
|
||||
dd 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85
|
||||
dd 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070
|
||||
dd 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3
|
||||
dd 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
|
||||
|
||||
section '.text' code
|
||||
|
||||
;; Function: sha256_compute_block
|
||||
sha256_compute_block:
|
||||
push ebp
|
||||
mov ebp, esp
|
||||
|
||||
leave
|
||||
ret
|
||||
|
||||
;; Function: sha256_internal
|
||||
;;
|
||||
;; Parameters:
|
||||
;;
|
||||
;; [esp+8] - state
|
||||
;; [esp+12] - input buffer
|
||||
;; [esp+16] - size of the input buffer
|
||||
;;
|
||||
sha256_internal:
|
||||
push ebp
|
||||
push edi
|
||||
mov ebp, esp
|
||||
sub esp, 64+8
|
||||
|
||||
mov eax, dword [ebp+16]
|
||||
xor edx, edx
|
||||
|
||||
; set padlen to (len << 3)
|
||||
shld edx, eax, 3 ; 64-bit left shit
|
||||
sal eax, 3
|
||||
mov dword [ebp-(64+8)], eax
|
||||
mov dword [ebp-(64+4)], edx
|
||||
|
||||
.for_block:
|
||||
cmp dword [ebp+16], 64
|
||||
jb .done
|
||||
push dword [ebp+12] ; push in
|
||||
push dword [ebp+8] ; push state
|
||||
call sha256_compute_block
|
||||
add esp, 8
|
||||
sub dword [ebp+16], 64 ; len -= 64
|
||||
add dword [ebp+12], 64 ; in += 64
|
||||
jmp .for_block
|
||||
.done:
|
||||
|
||||
; ensure padding buffer is full of zero
|
||||
lea edi, [ebp-64]
|
||||
mov ecx, 16
|
||||
xor eax, eax
|
||||
rep stosd
|
||||
|
||||
|
||||
|
||||
pop edi
|
||||
leave
|
||||
ret
|
||||
|
||||
;; Function: sha256
|
||||
;;
|
||||
;; Parameters:
|
||||
;;
|
||||
;; [esp+8] - output buffer
|
||||
;; [esp+12] - input buffer
|
||||
;; [esp+16] - size of the input buffer
|
||||
;;
|
||||
public sha256
|
||||
sha256:
|
||||
push ebp
|
||||
mov ebp, esp
|
||||
sub esp, 8*4 ; uint32_t state[8]
|
||||
|
||||
; setup initial state
|
||||
mov dword [ebp-8*4], 0x6a09e667
|
||||
mov dword [ebp-7*4], 0xbb67ae85
|
||||
mov dword [ebp-6*4], 0x3c6ef372
|
||||
mov dword [ebp-5*4], 0xa54ff53a
|
||||
mov dword [ebp-4*4], 0x510e527f
|
||||
mov dword [ebp-3*4], 0x9b05688c
|
||||
mov dword [ebp-2*4], 0x1f83d9ab
|
||||
mov dword [ebp-1*4], 0x5be0cd19
|
||||
|
||||
;
|
||||
|
||||
; copy state to uint8_t *out
|
||||
mov edx, dword [ebp+8]
|
||||
mov eax, dword [ebp-8*4]
|
||||
bswap eax
|
||||
mov dword [edx], eax ; out[0] = bswap(state[0])
|
||||
mov eax, dword [ebp-7*4]
|
||||
bswap eax
|
||||
mov dword [edx+4], eax ; out[1] = bswap(state[1])
|
||||
mov eax, dword [ebp-6*4]
|
||||
bswap eax
|
||||
mov dword [edx+8], eax ; out[2] = bswap(state[2])
|
||||
mov eax, dword [ebp-5*4]
|
||||
bswap eax
|
||||
mov dword [edx+12], eax ; out[3] = bswap(state[3])
|
||||
mov eax, dword [ebp-4*4]
|
||||
bswap eax
|
||||
mov dword [edx+16], eax ; out[4] = bswap(state[4])
|
||||
mov eax, dword [ebp-3*4]
|
||||
bswap eax
|
||||
mov dword [edx+20], eax ; out[5] = bswap(state[5])
|
||||
mov eax, dword [ebp-2*4]
|
||||
bswap eax
|
||||
mov dword [edx+24], eax ; out[6] = bswap(state[6])
|
||||
mov eax, dword [ebp-1*4]
|
||||
bswap eax
|
||||
mov dword [edx+28], eax ; out[7] = bswap(state[7])
|
||||
leave
|
||||
ret
|
||||
|
|
|
|||
Loading…
Reference in a new issue