.code32
.section .text
.globl _isr0
.globl _isr1
.globl _isr2
.globl _isr3
.globl _isr4
.globl _isr5
.globl _isr6
.globl _isr7
.globl _isr8
.globl _isr9
.globl _isra
.globl _isrb
.globl _isrc
.globl _isrd
.globl _isre
.globl _isrf
.globl _isr10
.globl _isr11
.globl _isr12
.globl _isr13
.globl _isr14
.globl _isr15
.globl _isr16
.globl _isr17
.globl _isr18
.globl _isr19
.globl _isr1a
.globl _isr1b
.globl _isr1c
.globl _isr1d
.globl _isr1e
.globl _isr1f
.globl _isr80
.globl _irq0
.globl _irq1
.globl _irq2
.globl _irq3
.globl _irq4
.globl _irq5
.globl _irq6
.globl _irq7
.globl _irq8
.globl _irq9
.globl _irqa
.globl _irqb
.globl _irqc
.globl _irqd
.globl _irqe
.globl _irqf
_isr0: cli
push $0x00
push $0x00
jmp isr_common
_isr1: cli
push $0x00
push $0x01
jmp isr_common
_isr2: cli
push $0x00
push $0x02
jmp isr_common
_isr3: cli
push $0x00
push $0x03
jmp isr_common
_isr4: cli
push $0x00
push $0x04
jmp isr_common
_isr5: cli
push $0x00
push $0x05
jmp isr_common
_isr6: cli
push $0x00
push $0x06
jmp isr_common
_isr7: cli
push $0x00
push $0x07
jmp isr_common
_isr8: cli
push $0x08
jmp isr_common
_isr9: cli
push $0x00
push $0x09
jmp isr_common
_isra: cli
push $0x0a
jmp isr_common
_isrb: cli
push $0x0b
jmp isr_common
_isrc: cli
push $0x0c
jmp isr_common
_isrd: cli
push $0x0d
jmp isr_common
_isre: cli
push $0x0e
jmp isr_common
_isrf: cli
push $0x00
push $0x0f
jmp isr_common
_isr10: cli
push $0x00
push $0x10
jmp isr_common
_isr11: cli
push $0x00
push $0x11
jmp isr_common
_isr12: cli
push $0x00
push $0x12
jmp isr_common
_isr13: cli
push $0x00
push $0x13
jmp isr_common
_isr14: cli
push $0x00
push $0x14
jmp isr_common
_isr15: cli
push $0x00
push $0x15
jmp isr_common
_isr16: cli
push $0x00
push $0x16
jmp isr_common
_isr17: cli
push $0x00
push $0x17
jmp isr_common
_isr18: cli
push $0x00
push $0x18
jmp isr_common
_isr19: cli
push $0x00
push $0x19
jmp isr_common
_isr1a: cli
push $0x00
push $0x1a
jmp isr_common
_isr1b: cli
push $0x00
push $0x1b
jmp isr_common
_isr1c: cli
push $0x00
push $0x1c
jmp isr_common
_isr1d: cli
push $0x00
push $0x1d
jmp isr_common
_isr1e: cli
push $0x00
push $0x1e
jmp isr_common
_isr1f: cli
push $0x00
push $0x1f
jmp isr_common
_isr80: cli
push $0x00
push $0x80
jmp isr_common
#; timer is special case, handled manually!
_irq0: cli
push $0x00
push $0x20
jmp irq_timer_multitask
_irq1: cli
push $0x00
push $0x21
jmp irq_common
_irq2: cli
push $0x00
push $0x22
jmp irq_common
_irq3: cli
push $0x00
push $0x23
jmp irq_common
_irq4: cli
push $0x00
push $0x24
jmp irq_common
_irq5: cli
push $0x00
push $0x25
jmp irq_common
_irq6: cli
push $0x00
push $0x26
jmp irq_common
_irq7: cli
push $0x00
push $0x27
jmp irq_common
_irq8: cli
push $0x00
push $0x28
jmp irq_common
_irq9: cli
push $0x00
push $0x29
jmp irq_common
_irqa: cli
push $0x00
push $0x2a
jmp irq_common
_irqb: cli
push $0x00
push $0x2b
jmp irq_common
_irqc: cli
push $0x00
push $0x2c
jmp irq_common
_irqd: cli
push $0x00
push $0x2d
jmp irq_common
_irqe: cli
push $0x00
push $0x2e
jmp irq_common
_irqf: cli
push $0x00
push $0x2f
jmp irq_common
.type isr_common, @function
isr_common:
pusha
mov %ds, %ax
push %eax
mov %esp, %eax #; stack from here *up*: ds, `pusha', task switch
#; mov $0xE0000000, %esp
push %eax #; ptr to said stack becomes parameter for _irq_handler
mov $0x10, %ax #; kernel data segment descriptor
mov %ax, %ds
mov %ax, %es
mov %ax, %fs
mov %ax, %gs
call _isr_handler
mov %eax, %esp
pop %eax
mov %ax, %ds
mov %ax, %es
mov %ax, %fs
mov %ax, %gs
popa
add $8, %esp #; cleans pushed error code, and pushed ISR number
sti
iret #; pops CS, EIP, EFLAGS, SS, ESP
.type irq_common, @function
irq_common:
pusha
mov %ds, %ax
push %eax
mov %esp, %eax #; stack from here *up*: ds, `pusha', task switch
#; mov $0xE0000000, %esp
push %eax #; ptr to said stack becomes parameter for _irq_handler
mov $0x10, %ax
mov %ax, %ds
mov %ax, %es
mov %ax, %fs
mov %ax, %gs
call _irq_handler
mov %eax, %esp
pop %eax
mov %ax, %ds #; restore from stack, which _irq_handler may change
mov %ax, %es
mov %ax, %fs
mov %ax, %gs
popa
add $8, %esp
sti #; waits one instruction, remember?
iret
.type irq_timer_multitask, @function
irq_timer_multitask:
pusha
mov %ds, %ax
push %eax
mov %esp, %eax
mov $0xE0000000, %esp #; XXX <- does this belong? As long as IRQs don't happen in the µkernel!
push %eax
mov $0x10, %ax
mov %ax, %ds
mov %ax, %es
mov %ax, %fs
mov %ax, %gs
mov $0x20, %al
outb %al, $0x20 #; EOI to master irq controller
call _AkariMicrokernel #; see use of %eax below, i.e. the return value.
#; add $4, %esp #; remove the pointer arg we pushed
#; technically the above is wasted since we replace %esp below,
#; but should we not at some point later, don't forget to remove
#; the pointer arg with something similar!
mov %eax, %esp #; this will be either the utks or kernel-stack. either way.
pop %eax
mov %ax, %ds
mov %ax, %es
mov %ax, %fs
mov %ax, %gs
popa
add $8, %esp
sti
iret
