BarinkOS/source/kernel/irs_table.s

88 lines
1.4 KiB
ArmAsm
Raw Normal View History

.code32
/*
* Interupt handlers
*/
.macro ISR_NOERRORCODE NAME, VECTOR
.globl irs\NAME
irs\NAME:
cli
push $0
push \VECTOR
jmp irs_common
.endm
.macro ISR_ERROCODE NAME, VECTOR
.globl irs\NAME
irs\NAME:
cli
push \VECTOR
jmp irs_common
.endm
ISR_NOERRORCODE 0 $0
ISR_NOERRORCODE 1 $1
ISR_NOERRORCODE 2 $2
ISR_NOERRORCODE 3 $3
ISR_NOERRORCODE 4 $4
ISR_NOERRORCODE 5 $5
ISR_NOERRORCODE 6 $6
ISR_NOERRORCODE 7 $7
ISR_NOERRORCODE 8 $8
ISR_NOERRORCODE 9 $9
ISR_NOERRORCODE 10 $10
ISR_NOERRORCODE 11 $11
ISR_NOERRORCODE 12 $12
ISR_NOERRORCODE 13 $13
ISR_NOERRORCODE 14 $14
ISR_NOERRORCODE 15 $15
ISR_NOERRORCODE 16 $16
ISR_NOERRORCODE 17 $17
ISR_NOERRORCODE 18 $18
ISR_NOERRORCODE 19 $19
ISR_NOERRORCODE 20 $20
ISR_NOERRORCODE 21 $21
ISR_NOERRORCODE 22 $22
ISR_NOERRORCODE 23 $23
ISR_NOERRORCODE 24 $24
ISR_NOERRORCODE 25 $25
ISR_NOERRORCODE 26 $26
ISR_NOERRORCODE 27 $27
ISR_NOERRORCODE 28 $28
ISR_NOERRORCODE 29 $29
ISR_NOERRORCODE 30 $30
ISR_NOERRORCODE 31 $31
irs_common:
pusha # Pushes edi,esi,ebp,esp,ebx,edx,ecx,eax
mov %ds, %ax
push %eax
/* load the kernel data segment descriptor*/
mov $0x10, %ax
mov %ax, %ds
mov %ax, %es
mov %ax, %fs
mov %ax, %gs
mov %esp, %eax
push %eax
call irs_handler
pop %eax
pop %ebx // reload ther orignal data segment descriptor
mov %bx, %ds
mov %bx, %es
mov %bx, %fs
mov %bx, %gs
popa
add $12, %esp # cleans push error and irs code
iret # pops 5 things at once: CS, EIP, EFLAGS, SS, and ESP