date and time created 80/04/09 16:25:36 by bill

[unix-history] / usr / src / sys / vax / include / pcb.h

/*      pcb.h   3.1     %H%     */

/*
* VAX process control block
*
* THE SIZE OF THE pcb, AS INFLUENCED BY THE SIZE OF THE SOFTWARE
* EXTENSION, IS KNOWN IN THE #ifdef FASTVAX'ed DEFINITIONS OF THE
* OFFSETS OF U_ARG and U_QSAV IN THE FILE user.h.
*/

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; 
       int     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];
};