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Annotation of researchv10dc/630/src/exec.c, revision 1.1

1.1     ! root        1: #include <jerq.h>
        !             2: #include <queue.h>
        !             3: #include <layer.h>
        !             4: #include <jerqproc.h>
        !             5: 
        !             6: #define STACK 16
        !             7: 
        !             8: execsw()
        !             9: {
        !            10:        restart(P, P->text);
        !            11:        retps();        /* return from exec's temporary pcb into P->pcb */
        !            12: }
        !            13: zombsw()
        !            14: {
        !            15:        restart(P, P->text);
        !            16: asm("  subw2   &4,%isp  ");    /* adjust isp because we don't RETPS */
        !            17:        sw(1);                  /* suspend  the new process */
        !            18: }
        !            19: exec(f)
        !            20:        int (*f)();
        !            21: {
        !            22:        struct pcb execpcb;
        !            23:        int execstk[STACK];
        !            24: 
        !            25:        execpcb.psw = 0x281e100;
        !            26:        execpcb.pc = (char (*)())execsw;
        !            27:        execpcb.sp = (int)execstk;
        !            28:        execpcb.lower = (int)execstk;
        !            29:        execpcb.upper = (int)&execstk[STACK];
        !            30:        execpcb.ap = (int)execstk;
        !            31:        execpcb.fp = (int)execstk;
        !            32:        execpcb.blkmv = 0;
        !            33:        P->text = (char *)(f);
        !            34:        P->inhibited = 0;
        !            35:        P->cursor = 0;
        !            36:        callps(&execpcb);
        !            37: }
        !            38: zombexec(f)
        !            39:        int (*f)();
        !            40: {
        !            41:        struct pcb zombpcb;
        !            42:        int zombstk[STACK];
        !            43: 
        !            44:        zombpcb.psw = 0x281e100;
        !            45:        zombpcb.pc = (char (*)())zombsw;
        !            46:        zombpcb.sp = (int)zombstk;
        !            47:        zombpcb.lower = (int)zombstk;
        !            48:        zombpcb.upper = (int)&zombstk[STACK];
        !            49:        zombpcb.ap = (int)zombstk;
        !            50:        zombpcb.fp = (int)zombstk;
        !            51:        zombpcb.blkmv = 0;
        !            52:        P->text = (char *)(f);
        !            53:        P->inhibited = 0;
        !            54:        P->cursor = 0;
        !            55:        callps(&zombpcb);
        !            56: }

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