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Annotation of researchv10dc/lsys/sys/pcb.h, revision 1.1.1.1

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

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