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#define VECTOR_PIC_SPUR             (IVT_IRQBASE + IRQ_PIC_SPUR)
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#define VECTOR_PIC_SPUR             (IVT_IRQBASE + IRQ_PIC_SPUR)
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#define VECTOR_SYSCALL              IVT_FREEBASE
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#define VECTOR_SYSCALL              IVT_FREEBASE
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#define VECTOR_TLB_SHOOTDOWN_IPI    (IVT_FREEBASE + 1)
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#define VECTOR_TLB_SHOOTDOWN_IPI    (IVT_FREEBASE + 1)
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#define VECTOR_DEBUG_IPI            (IVT_FREEBASE + 2)
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#define VECTOR_DEBUG_IPI            (IVT_FREEBASE + 2)
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struct istate {
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typedef struct {
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    uint32_t eax;
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    uint32_t eax;
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    uint32_t ecx;
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    uint32_t ecx;
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    uint32_t edx;
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    uint32_t edx;
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    uint32_t esi;
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    uint32_t esi;
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    uint32_t edi;
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    uint32_t edi;
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    uint32_t error_word;
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    uint32_t error_word;
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    uint32_t eip;
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    uint32_t eip;
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    uint32_t cs;
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    uint32_t cs;
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    uint32_t eflags;
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    uint32_t eflags;
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    uint32_t stack[];
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    uint32_t stack[];
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};
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} istate_t;
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/** Return true if exception happened while in userspace */
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/** Return true if exception happened while in userspace */
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static inline int istate_from_uspace(istate_t *istate)
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static inline int istate_from_uspace(istate_t *istate)
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{
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{
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    return !(istate->eip & 0x80000000);
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    return !(istate->eip & 0x80000000);