Function report |
Source Code:arch\x86\kernel\vm86_32.c |
Create Date:2022-07-28 08:41:56 |
Last Modify:2022-05-22 10:11:03 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:do_vm86_irq_handling
Proto:static int do_vm86_irq_handling(int subfunction, int irqnumber)
Type:int
Parameter:
Type | Parameter | Name |
---|---|---|
int | subfunction | |
int | irqnumber |
844 | Case subfunction == VM86_GET_AND_RESET_IRQ |
845 | Return get_and_reset_irq(irqnumber) |
847 | Case subfunction == VM86_GET_IRQ_BITS |
848 | Return irqbits |
850 | Case subfunction == VM86_REQUEST_IRQ |
853 | If Not Check operation authority Then Return -EPERM |
854 | If Not ( 1 << sig & 0 = don't send a signal ) Then Return -EPERM |
855 | If invalid_vm86_irq(irq) Then Return -EPERM |
857 | ret = request a new interrupt |
860 | tsk = current process |
861 | Return irq |
863 | Case subfunction == VM86_FREE_IRQ |
864 | If invalid_vm86_irq(irqnumber) Then Return -EPERM |
865 | If Not tsk Then Return 0 |
866 | If tsk != current process Then Return -EPERM |
867 | free_vm86_irq(irqnumber) |
868 | Return 0 |
871 | Return -EINVAL |
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