[unix-history] / a / sys / vax / pcb.h

/*	pcb.h	4.6	82/10/31	*/

/*
 * VAX process control block
 */

struct pcb
{
	int	pcb_ksp; 	/* kernel stack pointer */
	int	pcb_esp; 	/* exec stack pointer */
	int	pcb_ssp; 	/* supervisor stack pointer */
	int	pcb_usp; 	/* user stack pointer */
	int	pcb_r0; 
	int	pcb_r1; 
	int	pcb_r2; 
	int	pcb_r3; 
	int	pcb_r4; 
	int	pcb_r5; 
	int	pcb_r6; 
	int	pcb_r7; 
	int	pcb_r8; 
	int	pcb_r9; 
	int	pcb_r10; 
	int	pcb_r11; 
	int	pcb_r12; 
#define	pcb_ap pcb_r12
	int	pcb_r13; 
#define	pcb_fp pcb_r13
	int	pcb_pc; 	/* program counter */
	int	pcb_psl; 	/* program status longword */
	struct  pte *pcb_p0br; 	/* seg 0 base register */
	int	pcb_p0lr; 	/* seg 0 length register and astlevel */
	struct  pte *pcb_p1br; 	/* seg 1 base register */
	int	pcb_p1lr; 	/* seg 1 length register and pme */
/*
 * Software pcb (extension)
 */
	int	pcb_szpt; 	/* number of pages of user page table */
	int	pcb_cmap2;
	int	*pcb_sswap;
	int	pcb_sigc[3];
};

#define	AST_NONE	0x04000000	/* ast level */
#define	AST_USER	0x03000000	/* ast for user mode */

#define	ASTLVL_NONE	4
#define	ASTLVL_USER	3

#define	AST_CLR		0x07000000
#define	PME_CLR		0x80000000

#define	aston() \
	{ \
		u.u_pcb.pcb_p0lr = (u.u_pcb.pcb_p0lr &~ AST_CLR) | AST_USER; \
		mtpr(ASTLVL, ASTLVL_USER); \
	}

#define	astoff() \
	{ \
		u.u_pcb.pcb_p0lr = (u.u_pcb.pcb_p0lr &~ AST_CLR) | AST_NONE; \
		mtpr(ASTLVL, ASTLVL_NONE); \
	}
Commit	Line	Data
5dc49a50 C	1	/* pcb.h 4.6 82/10/31 */
	2
	3	/*
	4	* VAX process control block
	5	*/
	6
	7	struct pcb
	8	{
	9	int pcb_ksp; /* kernel stack pointer */
	10	int pcb_esp; /* exec stack pointer */
	11	int pcb_ssp; /* supervisor stack pointer */
	12	int pcb_usp; /* user stack pointer */
	13	int pcb_r0;
	14	int pcb_r1;
	15	int pcb_r2;
	16	int pcb_r3;
	17	int pcb_r4;
	18	int pcb_r5;
	19	int pcb_r6;
	20	int pcb_r7;
	21	int pcb_r8;
	22	int pcb_r9;
	23	int pcb_r10;
	24	int pcb_r11;
	25	int pcb_r12;
	26	#define pcb_ap pcb_r12
	27	int pcb_r13;
	28	#define pcb_fp pcb_r13
	29	int pcb_pc; /* program counter */
	30	int pcb_psl; /* program status longword */
	31	struct pte pcb_p0br; / seg 0 base register */
	32	int pcb_p0lr; /* seg 0 length register and astlevel */
	33	struct pte pcb_p1br; / seg 1 base register */
	34	int pcb_p1lr; /* seg 1 length register and pme */
	35	/*
	36	* Software pcb (extension)
	37	*/
	38	int pcb_szpt; /* number of pages of user page table */
	39	int pcb_cmap2;
	40	int *pcb_sswap;
	41	int pcb_sigc[3];
	42	};
	43
	44	#define AST_NONE 0x04000000 /* ast level */
	45	#define AST_USER 0x03000000 /* ast for user mode */
	46
	47	#define ASTLVL_NONE 4
	48	#define ASTLVL_USER 3
	49
	50	#define AST_CLR 0x07000000
	51	#define PME_CLR 0x80000000
	52
	53	#define aston() \
	54	{ \
	55	u.u_pcb.pcb_p0lr = (u.u_pcb.pcb_p0lr &~ AST_CLR) \| AST_USER; \
	56	mtpr(ASTLVL, ASTLVL_USER); \
	57	}
	58
	59	#define astoff() \
	60	{ \
	61	u.u_pcb.pcb_p0lr = (u.u_pcb.pcb_p0lr &~ AST_CLR) \| AST_NONE; \
	62	mtpr(ASTLVL, ASTLVL_NONE); \
	63	}