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Annotation of cci/sys/tahoe/pcb.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * TAHOE process control block
        !             3:  */
        !             4: 
        !             5: struct pcb
        !             6: {
        !             7:        int     pcb_ksp;        /* kernel stack pointer */
        !             8:        int     pcb_usp;        /* user stack pointer */
        !             9:        int     pcb_r0; 
        !            10:        int     pcb_r1; 
        !            11:        int     pcb_r2; 
        !            12:        int     pcb_r3; 
        !            13:        int     pcb_r4; 
        !            14:        int     pcb_r5; 
        !            15:        int     pcb_r6; 
        !            16:        int     pcb_r7; 
        !            17:        int     pcb_r8; 
        !            18:        int     pcb_r9; 
        !            19:        int     pcb_r10; 
        !            20:        int     pcb_r11; 
        !            21:        int     pcb_r12; 
        !            22:        int     pcb_r13; 
        !            23: #define        pcb_fp pcb_r13
        !            24:        int     pcb_pc;         /* program counter */
        !            25:        int     pcb_psl;        /* program status longword */
        !            26:        struct  pte *pcb_p0br;  /* seg 0 base register */
        !            27:        int     pcb_p0lr;       /* seg 0 length register and astlevel */
        !            28:        struct  pte *pcb_p1br;  /* seg 1 base register */
        !            29:        int     pcb_p1lr;       /* seg 1 length register and pme */
        !            30:        struct  pte *pcb_p2br;  /* seg 2 base register */
        !            31:        int     pcb_p2lr;       /* seg 2 length register and pme */
        !            32:        int     pcb_ach;        /* accumulator - high order longword */
        !            33:        int     pcb_acl;        /* accumulator - low order longword */
        !            34: #define ACH    pcb_ach
        !            35: #define ACL    pcb_acl
        !            36:        int     pcb_hfs;        /* f.p. status register.        */
        !            37: /*
        !            38:  * Software pcb (extension)
        !            39:  */
        !            40:        union {
        !            41:                float   *faddr; /* address of single precision accumulator */
        !            42:                double  *daddr; /* address of double precision accumulator */
        !            43:        } pcb_savacc;
        !            44: #define FSAVACC        pcb_savacc.faddr
        !            45: #define DSAVACC pcb_savacc.daddr
        !            46:        int     pcb_szpt;       /* number of pages of user page table */
        !            47:        int     pcb_cmap2;
        !            48:        int     *pcb_sswap;
        !            49:        int     pcb_sigc[4];
        !            50: };
        !            51: 
        !            52: extern long    *user_psl;
        !            53: 
        !            54: #define        aston() \
        !            55:        { \
        !            56:                u.u_pcb.pcb_psl |= PSL_SFE; \
        !            57:                if ((int)user_psl != 0) *user_psl |= PSL_SFE; \
        !            58:        }
        !            59: 
        !            60: #define        astoff() \
        !            61:        { \
        !            62:                u.u_pcb.pcb_psl &= ~ PSL_SFE; \
        !            63:                if ((int)user_psl != 0) *user_psl &= ~PSL_SFE; \
        !            64:        }

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