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.code64
.extern printk
.extern apic_ack
.macro CALL_PRINTK msg
mov \msg, %rdi
mov $0, %eax # Required for variadic functions
mov $printk,%rcx
call *(%rcx)
.endm
.macro SAVE_REGS
push %r8
push %r9
push %r10
push %r11
push %r12
push %r13
push %r14
push %r15
push %rax
push %rbx
push %rcx
push %rdx
push %rbp
push %rsi
push %rdi
xor %rax,%rax # Because I am picky
mov %gs, %rax
push %rax
mov %es, %rax
push %rax
mov %fs, %rax
push %rax
mov %ds, %rax
push %rax
mov $0x10, %ax
mov %ax, %ds
mov 80(%rsp), %rax
.endm
.macro RESTORE_REGS
pop %rax
mov %ax, %ds
pop %rax
mov %ax, %fs
pop %rax
mov %ax, %es
pop %rax
mov %ax, %gs
pop %rdi
pop %rsi
pop %rbp
pop %rdx
pop %rcx
pop %rbx
pop %rax
pop %r15
pop %r14
pop %r13
pop %r12
pop %r11
pop %r10
pop %r9
pop %r8
.endm
.globl INT_DEFAULT
INT_DEFAULT:
SAVE_REGS
RESTORE_REGS
iretq
.globl INT_0
INT_0:
CALL_PRINTK $MSG_INT_0
INT_0_INFINITE:
jmp INT_0_INFINITE
iretq
.globl INT_10
INT_10:
CALL_PRINTK $MSG_INT_10
INT_10_INFINITE:
jmp INT_10_INFINITE
iretq
.globl INT_14
INT_14:
pop %rsi
CALL_PRINTK $MSG_INT_14
INT_14_INFINITE:
jmp INT_14_INFINITE
iretq
.globl INT_KBD
INT_KBD:
SAVE_REGS
CALL_PRINTK $MSG_INT_KBD
call apic_ack
RESTORE_REGS
iretq
.globl INT_CLK
.extern clock
INT_CLK:
SAVE_REGS
call clock
call apic_ack
RESTORE_REGS
iretq
.globl INT_SYSCALL
.extern syscall
INT_SYSCALL:
SAVE_REGS
call syscall
RESTORE_REGS
iretq
MSG_INT_0:
.asciz "Zero Division error!"
MSG_INT_10:
.asciz "Invalid TSS!"
MSG_INT_14:
.asciz "Page fault: error %x !"
MSG_INT_KBD:
.asciz "Key press!"
MSG:
.asciz "Called :)\n"
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