/* interrupt.S - interrupt handlers */

#include <asm/interrupt.h>

.text

.global EXC_DIV_ERROR, EXC_DEBUG, EXC_NMI, EXC_BREAKPOINT
.global EXC_INTO_OVERFLOW, EXC_BOUND_OVERFLOW, EXC_INVAL_OPCODE, EXC_NO_COPROCESSOR
.global EXC_DOUBLE_EXCEPTION, EXC_COPROC_PROT_ERROR, EXC_INVAL_TSS, EXC_SEG_NOT_PRESENT
.global EXC_STACK_FAULT, EXC_GEN_PROT_VIOLATION, EXC_PAGE_FAULT, EXC_RESERVED
.global EXC_COPROCESSOR_ERROR, EXC_ALIGN_ERROR

EXC_DIV_ERROR:
	mov $16,%ax
	mov %ax,%ds
	pushl $exc_div_error_str
	call print
	addl $4,%esp
	jmp looping

EXC_DEBUG:
	mov $16,%ax
	mov %ax,%ds
	pushl $exc_debug_str
	call print
	addl $4,%esp
	jmp looping

EXC_NMI:
	mov $16,%ax
	mov %ax,%ds
	pushl $exc_nmi_str
	call print
	addl $4,%esp
	jmp looping

EXC_BREAKPOINT:
	mov $16,%ax
	mov %ax,%ds
	pushl $exc_breakpoint_str
	call print
	addl $4,%esp
	jmp looping

EXC_INTO_OVERFLOW:
	mov $16,%ax
	mov %ax,%ds
	pushl $exc_into_overflow_str
	call print
	addl $4,%esp
	jmp looping

EXC_BOUND_OVERFLOW:
	mov $16,%ax
	mov %ax,%ds
	pushl $exc_bound_overflow_str
	call print
	addl $4,%esp
	jmp looping

EXC_INVAL_OPCODE:
	mov $16,%ax
	mov %ax,%ds
	pushl $exc_inval_opcode_str
	call print
	addl $4,%esp
	jmp looping

EXC_NO_COPROCESSOR:
	mov $16,%ax
	mov %ax,%ds
	pushl $exc_no_coprocessor_str
	call print
	addl $4,%esp
	jmp looping

EXC_DOUBLE_EXCEPTION:
	mov $16,%ax
	mov %ax,%ds
	pushl $exc_double_exception_str
	call print
	addl $4,%esp
	jmp looping

EXC_COPROC_PROT_ERROR:
	mov $16,%ax
	mov %ax,%ds
	pushl $exc_coproc_prot_error_str
	call print
	addl $4,%esp
	jmp looping

EXC_INVAL_TSS:
	mov $16,%ax
	mov %ax,%ds
	pushl $exc_inval_tss_str
	call print
	addl $4,%esp
	jmp looping

EXC_SEG_NOT_PRESENT:
	mov $16,%ax
	mov %ax,%ds
	pushl $exc_seg_not_present_str
	call print
	addl $4,%esp
	jmp looping

EXC_STACK_FAULT:
	mov $16,%ax
	mov %ax,%ds
	pushl $exc_stack_fault_str
	call print
	addl $4,%esp
	jmp looping

EXC_GEN_PROT_VIOLATION:
	mov $16,%ax
	mov %ax,%ds
	pushl $exc_gen_prot_violation_str
	call print
	addl $4,%esp
	jmp looping

EXC_PAGE_FAULT:
	mov $16,%ax
	mov %ax,%ds
	pushl $exc_page_fault_str
	call print
	addl $4,%esp
	jmp looping

EXC_RESERVED:
	mov $16,%ax
	mov %ax,%ds
	pushl $exc_reserved_str
	call print
	addl $4,%esp
	jmp looping

EXC_COPROCESSOR_ERROR:
	mov $16,%ax
	mov %ax,%ds
	pushl $exc_coprocessor_error_str
	call print
	addl $4,%esp
	jmp looping

EXC_ALIGN_ERROR:
	mov $16,%ax
	mov %ax,%ds
	pushl $exc_align_error_str
	call print
	addl $4,%esp

looping: jmp looping


.data

exc_div_error_str:		.asciz "EXCEPTION: DIVIDE ERROR\r\n"
exc_debug_str:			.asciz "EXCEPTION: DEBUG EXCEPTION\r\n"
exc_nmi_str:			.asciz "EXCEPTION: NON-MASKABLE INTERRUPT\r\n"
exc_breakpoint_str:		.asciz "EXCEPTION: BREAKPOINT\r\n"
exc_into_overflow_str:		.asciz "EXCEPTION: OVERFLOW (INTO)\r\n"
exc_bound_overflow_str:		.asciz "EXCEPTION: OVERFLOW (BOUND)\r\n"
exc_inval_opcode_str:		.asciz "EXCEPTION: INVALID OPCODE\r\n"
exc_no_coprocessor_str:		.asciz "EXCEPTION: NO COPROCESSOR\r\n"
exc_double_exception_str:	.asciz "EXCEPTION: DOUBLE EXCEPTION\r\n"
exc_coproc_prot_error_str:	.asciz "EXCEPTION: COPROCESSOR PROTECTION ERROR\r\n"
exc_inval_tss_str:		.asciz "EXCEPTION: INVALID TSS SEGMENT\r\n"
exc_seg_not_present_str:	.asciz "EXCEPTION: SEGMENT NOT PRESENT\r\n"
exc_stack_fault_str:		.asciz "EXCEPTION: STACK FAULT\r\n"
exc_gen_prot_violation_str:	.asciz "EXCEPTION: GENERAL PROTECTION VIOLATION\r\n"
exc_page_fault_str:		.asciz "EXCEPTION: PAGE FAULT\r\n"
exc_reserved_str:		.asciz "EXCEPTION: UNKNOWN ERROR\r\n"
exc_coprocessor_error_str:	.asciz "EXCEPTION: COPROCESSOR ERROR\r\n"
exc_align_error_str:		.asciz "EXCEPTION: ALIGNMENT ERROR\r\n"


.text

.global IRQ0, IRQ1, IRQ2, IRQ3, IRQ4, IRQ5, IRQ6, IRQ7, IRQ8, IRQ9, IRQ10, IRQ11, IRQ12, IRQ13, IRQ14, IRQ15

IRQ0:
	pusha
	pushf
	incb cur_blink_counter
	cmpb $CUR_BLINK,cur_blink_counter
	jb no_blink
	subb $CUR_BLINK,cur_blink_counter
	call console_cur_blink
no_blink:
	cmpl $0,timers
	je no_timer
	decl timers
no_timer:
	mov $0x20, %al
	out %al, $0x20
	popf
	popa
	iret

IRQ1:
	push %ax
	push %ds
	push %edx
	mov $16,%ax
	mov %ax,%ds
	in $0x60,%al
	call kb_write_keycode
	mov $0x20, %al
	out %al, $0x20
	pop %edx
	pop %ds
	pop %ax
	iret
	
IRQ2:
	push %ax
	mov $0x20, %al
	out %al, $0x20
	pop %ax
	iret
	
IRQ3:
	push %ax
	mov $0x20, %al
	out %al, $0x20
	pop %ax
	iret
	
IRQ4:
	push %ax
	mov $0x20, %al
	out %al, $0x20
	pop %ax
	iret
	
IRQ5:
	push %ax
	mov $0x20, %al
	out %al, $0x20
	pop %ax
	iret
	
IRQ6:
	#push %ax
	pushf
	pusha
	call floppy_IRQ
	mov $0x20, %al
	out %al, $0x20
	#pop %ax
	popa
	popf
	iret
	
IRQ7:
	push %ax
	mov $0x20, %al
	out %al, $0x20
	pop %ax
	iret
	
IRQ8:
	push %ax
	mov $0x20, %al
	out %al, $0xA0
	pop %ax
	iret
	
IRQ9:
	push %ax
	mov $0x20, %al
	out %al, $0xA0
	pop %ax
	iret
	
IRQ10:
	push %ax
	mov $0x20, %al
	out %al, $0xA0
	pop %ax
	iret
	
IRQ11:
	push %ax
	mov $0x20, %al
	out %al, $0xA0
	pop %ax
	iret
	
IRQ12:
	push %ax
	mov $0x20, %al
	out %al, $0xA0
	pop %ax
	iret
	
IRQ13:
	push %ax
	mov $0x20, %al
	out %al, $0xA0
	pop %ax
	iret
	
IRQ14:
	push %ax
	mov $0x20, %al
	out %al, $0xA0
	pop %ax
	iret
	
IRQ15:
	push %ax
	mov $0x20, %al
	out %al, $0xA0
	pop %ax
	iret