Mercurial > lcfOS

comparison cos/kernel/asmcode.asm @ 31:88590c42320f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Changed interrupt handler
author windel
date Tue, 10 Jan 2012 20:40:35 +0100
parents 7e3bdcb391dc
children 3a6a9b929db0
comparison
equal deleted inserted replaced
30:0148f55bfe24 31:88590c42320f
16 extern idtP 16 extern idtP
17 ; TODO: make this pointer thing more insightfull: 17 ; TODO: make this pointer thing more insightfull:
18 lidt [idtP] 18 lidt [idtP]
19 ret 19 ret
20 20
21 %macro pushAll 0 21 ; ISR related assembler wrappers:
22
23 %macro ISR_NOERRCODE 1
24 global INT%1
25 INT%1:
26 cli
27 push strict qword 0 ; push dummy error code
28 push strict qword %1 ; push interrupt number
29 jmp isr_common_stub
30 %endmacro
31
32 %macro ISR_ERRCODE 1
33 global INT%1
34 INT%1:
35 cli
36 push strict qword %1 ; push interrupt number
37 jmp isr_common_stub
38 %endmacro
39
40 isr_common_stub:
41 ; Do some saving:
22 push rax 42 push rax
23 push rcx 43 push rcx
24 push rdx 44 push rdx
25 push rbx 45 push rbx
26 push rbp 46 push rbp
27 push rsi 47 push rsi
28 push rdi 48 push rdi
29 %endmacro
30 49
31 %macro popAll 0 50 ; AMD64 calling convention, first parameter is in rdi:
51 mov rdi, rsp ; Load stack pointer into rdi to indicate where the registers on the stack are (so that we can change them!)
52
53 extern isr_handler
54 call isr_handler
55
32 pop rdi 56 pop rdi
33 pop rsi 57 pop rsi
34 pop rbp 58 pop rbp
35 pop rbx 59 pop rbx
36 pop rdx 60 pop rdx
37 pop rcx 61 pop rcx
38 pop rax 62 pop rax
39 %endmacro
40 63
41 ; Define macro with two arguments: 64 add rsp, 16 ; cleanup error code and isr number
42 %macro INTX 2 65 sti
43 global %1 66 iretq
44 %1:
45 ; Do some saving:
46 cli
47 pushAll
48 ;xchg bx,bx
49
50 extern %2
51 call %2
52 ; Do restoration
53 popAll
54 ;xchg bx, bx
55 sti
56 iretq
57
58 %endmacro
59 67
60 ; Exception handlers: 68 ; Exception handlers:
61 INTX INTDEF, INTDEF_handler 69 ISR_NOERRCODE 0
62 INTX INT0, INT0handler 70 ISR_NOERRCODE 1
63 INTX INT1, INT1handler 71 ISR_NOERRCODE 2
64 INTX INT2, INT2handler 72 ISR_NOERRCODE 3
65 INTX INT3, INT3handler 73 ISR_NOERRCODE 4
66 INTX INT4, INT4handler 74 ISR_NOERRCODE 5
67 INTX INT5, INT5handler 75 ISR_NOERRCODE 6
68 INTX INT6, INT6handler 76 ISR_NOERRCODE 7
69 INTX INT7, INT7handler 77 ISR_ERRCODE 8
70 INTX INT8, INT8handler 78 ISR_NOERRCODE 9
71 INTX INT9, INT9handler 79 ISR_ERRCODE 10
72 INTX INT10, INT10handler 80 ISR_ERRCODE 11
73 INTX INT11, INT11handler 81 ISR_ERRCODE 12
74 INTX INT12, INT12handler 82 ISR_ERRCODE 13
75 INTX INT13, INT13handler 83 ISR_ERRCODE 14
76 INTX INT14, INT14handler 84 ; 15 is reserved
77 INTX INT15, INT15handler 85 ISR_NOERRCODE 16
78 INTX INT16, INT16handler 86 ISR_ERRCODE 17
79 INTX INT17, INT17handler 87 ISR_NOERRCODE 18
80 INTX INT18, INT18handler 88 ISR_NOERRCODE 19
81 INTX INT19, INT19handler
82 89
83 INTX INT32, INT32handler 90 ISR_NOERRCODE 32
84 INTX INT33, INT33handler 91 ISR_NOERRCODE 33
85 INTX INT34, INT34handler 92 ISR_NOERRCODE 34
86 93
94 ; default handler:
95 ISR_NOERRCODE 255
96
97