/* *  linux/kernel/asm.s * *  (C) 1991  Linus Torvalds *//* * asm.s contains the low-level code for most hardware faults. * page_exception is handled by the mm, so that isn't here. This * file also handles (hopefully) fpu-exceptions due to TS-bit, as * the fpu must be properly saved/resored. This hasn't been tested. */.globl _divide_error,_debug,_nmi,_int3,_overflow,_bounds,_invalid_op.globl _double_fault,_coprocessor_segment_overrun.globl _invalid_TSS,_segment_not_present,_stack_segment.globl _general_protection,_coprocessor_error,_irq13,_reserved_divide_error:	pushl $_do_divide_errorno_error_code:	xchgl %eax,(%esp)	pushl %ebx	pushl %ecx	pushl %edx	pushl %edi	pushl %esi	pushl %ebp	push %ds	push %es	push %fs	pushl $0		# "error code"	lea 44(%esp),%edx	pushl %edx	movl $0x10,%edx	mov %dx,%ds	mov %dx,%es	mov %dx,%fs	call *%eax	addl $8,%esp	pop %fs	pop %es	pop %ds	popl %ebp	popl %esi	popl %edi	popl %edx	popl %ecx	popl %ebx	popl %eax	iret_debug:	pushl $_do_int3		# _do_debug	jmp no_error_code_nmi:	pushl $_do_nmi	jmp no_error_code_int3:	pushl $_do_int3	jmp no_error_code_overflow:	pushl $_do_overflow	jmp no_error_code_bounds:	pushl $_do_bounds	jmp no_error_code_invalid_op:	pushl $_do_invalid_op	jmp no_error_code_coprocessor_segment_overrun:	pushl $_do_coprocessor_segment_overrun	jmp no_error_code_reserved:	pushl $_do_reserved	jmp no_error_code_irq13:	pushl %eax	xorb %al,%al	outb %al,$0xF0	movb $0x20,%al	outb %al,$0x20	jmp 1f1:	jmp 1f1:	outb %al,$0xA0	popl %eax	jmp _coprocessor_error_double_fault:	pushl $_do_double_faulterror_code:	xchgl %eax,4(%esp)		# error code <-> %eax	xchgl %ebx,(%esp)		# &function <-> %ebx	pushl %ecx	pushl %edx	pushl %edi	pushl %esi	pushl %ebp	push %ds	push %es	push %fs	pushl %eax			# error code	lea 44(%esp),%eax		# offset	pushl %eax	movl $0x10,%eax	mov %ax,%ds	mov %ax,%es	mov %ax,%fs	call *%ebx	addl $8,%esp	pop %fs	pop %es	pop %ds	popl %ebp	popl %esi	popl %edi	popl %edx	popl %ecx	popl %ebx	popl %eax	iret_invalid_TSS:	pushl $_do_invalid_TSS	jmp error_code_segment_not_present:	pushl $_do_segment_not_present	jmp error_code_stack_segment:	pushl $_do_stack_segment	jmp error_code_general_protection:	pushl $_do_general_protection	jmp error_code