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comparison cos/kernel/asmcode.asm @ 17:f3e3e0e9c4bc

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First attempt IDT loader 64 bits. INT13 occurs
author windel
date Sat, 19 Nov 2011 20:01:28 +0100
parents a58904747019
children 6129643f5c34
comparison
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16:ddefe6d97cd7 17:f3e3e0e9c4bc
4 4
5 section .text 5 section .text
6 align 4 6 align 4
7 7
8 ; Port helpers: 8 ; Port helpers:
9 global outb 9 ;global outb
10 outb: 10 ;outb:
11 mov eax, [esp + 8] 11 ; mov eax, [esp + 8]
12 mov edx, [esp + 4] 12 ; mov edx, [esp + 4]
13 out dx, al 13 ; out dx, al
14 ret 14 ; ret
15 15
16 global inb 16 ;global inb
17 inb: 17 ;inb:
18 xor eax, eax 18 ; xor eax, eax
19 mov edx, [esp + 4] 19 ; mov edx, [esp + 4]
20 in al, dx 20 ; in al, dx
21 ret 21 ; ret
22
23 ; Helper functions:
24 global enableinterrupts
25 enableinterrupts:
26 sti
27 ret
28 22
29 global halt 23 global halt
30 halt: 24 halt:
31 cli 25 cli
32 hlt 26 hlt
33 27
28 global magicBochsBreak
29 magicBochsBreak:
30 xchg bx,bx
31 ret
32
34 global loadIDT 33 global loadIDT
35 loadIDT: 34 loadIDT:
35 extern idtP
36 ; TODO: make this pointer thing more insightfull:
37 ;xchg bx, bx ; For debugging with bochs
38 lidt [idtP]
36 ret 39 ret
40
41 %macro pushAll 0
42 push rax
43 push rcx
44 push rdx
45 push rbx
46 push rbp
47 push rsi
48 push rdi
49 %endmacro
50
51 %macro popAll 0
52 pop rdi
53 pop rsi
54 pop rbp
55 pop rbx
56 pop rdx
57 pop rcx
58 pop rax
59 %endmacro
37 60
38 ; Define macro with two arguments: 61 ; Define macro with two arguments:
39 %macro INTX 2 62 %macro INTX 2
40 global %1 63 global %1
41 %1: 64 %1:
42 ; Do some saving: 65 ; Do some saving:
43 extern %2 66 pushAll
44 call %2 67 extern %2
68 call %2
45 ; Do restoration 69 ; Do restoration
46 iret 70 popAll
71 iretq
47 72
48 %endmacro 73 %endmacro
49 74
50 ; Exception handlers: 75 ; Exception handlers:
51 INTX INTDEF, INTDEF_handler 76 INTX INTDEF, INTDEF_handler