.global irq0
.extern _switch_task

.global jump_kernel
.global jump_user

.extern ss
.extern esp
.extern eflags
.extern cs
.extern eip 

irq0:
push %esp

push %ebp

push %edx
push %ecx
push %ebx
push %eax

call _switch_task

iret

jump_kernel:
pop %eax /* pop return instruction */

pop %eax
pop %ebx
pop %ecx
pop %edx

pop %ebp
pop %esp

push (eflags)
push (cs)
push (eip)

iret

jump_user:
pop %eax /* pop return instruction */

pop %eax
pop %ebx
pop %ecx
pop %edx

pop %ebp

push (ss)
push (esp)
push (eflags)
push (cs)
push (eip)

iret