80 struct pcb {  struct
81 	int	pcb_esp0;		/* ring0 esp */  argument
82 	int	pcb_esp;		/* kernel esp */  argument
83 	int	pcb_ebp;		/* kernel ebp */  argument
84 	int	pcb_cr0;		/* saved image of CR0 */  argument
85 	int	pcb_cr2;		/* page fault address (CR2) */  argument
86 	int	pcb_cr3;		/* page directory pointer */  argument
87 	int	pcb_iopl;		/* i/o privilege level */  argument
89 	struct segment_descriptor pcb_fsd;	/* %fs descriptor */  argument
90 	struct segment_descriptor pcb_gsd; 	/* %gs descriptor */  argument
91 	void 	*pcb_onfault;		/* copyin/out fault recovery */  argument
95 	char	*pcb_iomap;		/* I/O permission bitmap */  argument
100 	struct cpu_info	*pcb_fpcpu;	/* cpu holding our fp state. */  argument
107 __CTASSERT(sizeof(struct pcb) - sizeof (union savefpu) == 128);  argument