Return to regs.c CVS log

Up to [Research Unix] / researchv8dc / cmd / adb

Annotation of researchv8dc/cmd/adb/regs.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * code to keep track of registers
        !             3:  */
        !             4: 
        !             5: #include "defs.h"
        !             6: #include "regs.h"
        !             7: #include <sys/param.h>
        !             8: 
        !             9: struct reglist {
        !            10:        char    *rname;
        !            11:        short   roffs;
        !            12:        short   rsys;
        !            13:        TREG    rval;
        !            14: };
        !            15: 
        !            16: struct reglist reglist[] = {
        !            17:        {"p1lr", P1LR, 1},
        !            18:        {"p1br", P1BR, 1},
        !            19:        {"p0lr", P0LR, 1},
        !            20:        {"p0br", P0BR, 1},
        !            21:        {"ksp", KSP, 1},
        !            22:        {"esp", ESP, 1},
        !            23:        {"ssp", SSP, 1},
        !            24: #define        FW      7       /* first register we may write */
        !            25:        {"psl", PSL, 0},
        !            26:        {"pc",  PC, 0},
        !            27:        {"sp",  USP, 0},
        !            28:        {"fp",  FP, 0},
        !            29:        {"ap",  AP, 0},
        !            30:        {"r11", R11, 0},
        !            31:        {"r10", R10, 0},
        !            32:        {"r9",  R9, 0},
        !            33:        {"r8",  R8, 0},
        !            34:        {"r7",  R7, 0},
        !            35:        {"r6",  R6, 0},
        !            36:        {"r5",  R5, 0},
        !            37:        {"r4",  R4, 0},
        !            38:        {"r3",  R3, 0},
        !            39:        {"r2",  R2, 0},
        !            40:        {"r1",  R1, 0},
        !            41:        {"r0",  R0, 0},
        !            42:        {NULL}
        !            43: };
        !            44: 
        !            45: /*
        !            46:  * the following are needed only to
        !            47:  * make registers `addressable'
        !            48:  * which is needed only so we can
        !            49:  * examine register variables
        !            50:  */
        !            51: 
        !            52: ADDR raddr[MAXREG - MINREG + 1];
        !            53: int roffs[MAXREG - MINREG + 1] = {
        !            54:        R0, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11
        !            55: };
        !            56: 
        !            57: /*
        !            58:  * get/put registers
        !            59:  * in our saved copies
        !            60:  */
        !            61: 
        !            62: TREG
        !            63: rget(r)
        !            64: {
        !            65:        register struct reglist *rp;
        !            66: 
        !            67:        for (rp = reglist; rp->rname; rp++)
        !            68:                if (rp->roffs == r)
        !            69:                        return (rp->rval);
        !            70:        error("panic: rget");
        !            71:        /* NOTREACHED */
        !            72: }
        !            73: 
        !            74: rput(r, v)
        !            75: TREG v;
        !            76: {
        !            77:        register struct reglist *rp;
        !            78: 
        !            79:        for (rp = reglist; rp->rname; rp++)
        !            80:                if (rp->roffs == r) {
        !            81:                        rp->rval = v;
        !            82:                        return;
        !            83:                }
        !            84:        error("panic: rput");
        !            85:        /* NOTREACHED */
        !            86: }
        !            87: 
        !            88: /*
        !            89:  * grab registers into saved copy
        !            90:  * should be called before looking at the process
        !            91:  */
        !            92: 
        !            93: rsnarf()
        !            94: {
        !            95:        register struct reglist *rp;
        !            96: 
        !            97:        for (rp = reglist; rp->rname; rp++)
        !            98:                fget((ADDR)rp->roffs, CORF|UBLKSP, (char *)&rp->rval, sizeof(rp->rval));
        !            99: }
        !           100: 
        !           101: /*
        !           102:  * put registers back
        !           103:  */
        !           104: 
        !           105: rrest()
        !           106: {
        !           107:        register struct reglist *rp;
        !           108: 
        !           109:        if (pid == 0)
        !           110:                return;
        !           111:        for (rp = &reglist[FW]; rp->rname; rp++)
        !           112:                fput((ADDR)rp->roffs, CORF|UBLKSP, (char *)&rp->rval, sizeof(rp->rval));
        !           113: }
        !           114: 
        !           115: /*
        !           116:  * print the registers
        !           117:  */
        !           118: 
        !           119: printregs(c)
        !           120: char c;
        !           121: {
        !           122:        register struct reglist *rp;
        !           123: 
        !           124:        for (rp = reglist; rp->rname; rp++) {
        !           125:                if (rp->rsys == 1 && c != 'R')
        !           126:                        continue;
        !           127:                printf("%s%6t%R %16t", rp->rname, rtow(rp->rval));
        !           128:                valpr(rtow(rp->rval), (rp->roffs == PC) ? INSTSP : DATASP);
        !           129:                printc(EOR);
        !           130:        }
        !           131:        printpc();
        !           132: }
        !           133: 
        !           134: /*
        !           135:  * translate a name to a magic register offset
        !           136:  * the latter useful in rget/rput
        !           137:  */
        !           138: 
        !           139: int
        !           140: rname(n)
        !           141: char *n;
        !           142: {
        !           143:        register struct reglist *rp;
        !           144: 
        !           145:        for (rp = reglist; rp->rname; rp++)
        !           146:                if (strcmp(n, rp->rname) == 0)
        !           147:                        return (rp->roffs);
        !           148:        return (BADREG);
        !           149: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.