PDP11: Record the actual source and destination values for history.
Previously, the history would always use a register value as source or destination as if the mode were zero, even when it wasn't. Also, now the destination value reflects the destination after instruction execution rather than before.
This commit is contained in:
Paul Koning
Mark Pizzolato
parent
e2a8f0fcdc
commit
66fb70b768
1 changed files with 183 additions and 7 deletions
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@ -745,6 +745,7 @@ while (reason == 0) {
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int32 IR, srcspec, srcreg, dstspec, dstreg;
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int32 src, src2, dst, ea;
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int32 i, t, sign, oldrs, trapnum;
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InstHistory *hst_ent;
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if (cpu_astop) {
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cpu_astop = 0;
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@ -886,20 +887,22 @@ while (reason == 0) {
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SWMASK ('K') | SWMASK ('V'), SWMASK ('S') | SWMASK ('V'),
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SWMASK ('U') | SWMASK ('V'), SWMASK ('U') | SWMASK ('V')
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};
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hst[hst_p].pc = PC | HIST_VLD;
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hst[hst_p].psw = get_PSW ();
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hst[hst_p].src = R[srcspec & 07];
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hst[hst_p].dst = R[dstspec & 07];
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hst[hst_p].inst[0] = IR;
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hst_ent = &hst[hst_p];
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hst_ent->pc = PC | HIST_VLD;
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hst_ent->psw = get_PSW ();
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hst_ent->src = 0;
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hst_ent->dst = 0;
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hst_ent->inst[0] = IR;
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for (i = 1; i < HIST_ILNT; i++) {
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if (cpu_ex (&val, (PC + (i << 1)) & 0177777, &cpu_unit, swmap[cm & 03]))
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hst[hst_p].inst[i] = 0;
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else hst[hst_p].inst[i] = (uint16) val;
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hst_ent->inst[i] = 0;
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else hst_ent->inst[i] = (uint16) val;
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}
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hst_p = (hst_p + 1);
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if (hst_p >= hst_lnt)
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hst_p = 0;
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}
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else hst_ent = NULL;
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PC = (PC + 2) & 0177777; /* incr PC, mod 65k */
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switch ((IR >> 12) & 017) { /* decode IR<15:12> */
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@ -988,6 +991,8 @@ while (reason == 0) {
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if (CPUT (CPUT_05|CPUT_20) && /* 11/05, 11/20 */
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((dstspec & 070) == 020)) /* JMP (R)+? */
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dst = R[dstspec & 07]; /* use post incr */
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if (hst_ent)
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hst_ent->dst = dst;
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JMP_PC (dst);
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}
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break; /* end JMP */
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@ -995,6 +1000,8 @@ while (reason == 0) {
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case 002: /* RTS et al*/
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if (IR < 000210) { /* RTS */
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dstspec = dstspec & 07;
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if (hst_ent)
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hst_ent->dst = R[dstspec];
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JMP_PC (R[dstspec]);
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R[dstspec] = ReadW (SP | dsenable);
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if (dstspec != 6)
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@ -1043,6 +1050,8 @@ while (reason == 0) {
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if (!CPUT (CPUT_20))
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V = 0;
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C = 0;
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if (hst_ent)
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hst_ent->dst = dst;
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if (dstreg)
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R[dstspec] = dst;
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else PWriteW (dst, last_pa);
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@ -1143,6 +1152,8 @@ while (reason == 0) {
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if ((cm == MD_KER) && (SP < (STKLIM + STKL_Y)))
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set_stack_trap (SP);
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R[srcspec] = PC;
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if (hst_ent)
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hst_ent->dst = dst;
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JMP_PC (dst & 0177777);
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}
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break; /* end JSR */
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@ -1150,6 +1161,8 @@ while (reason == 0) {
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case 050: /* CLR */
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N = V = C = 0;
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Z = 1;
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if (hst_ent)
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hst_ent->dst = 0;
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if (dstreg)
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R[dstspec] = 0;
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else WriteW (0, GeteaW (dstspec));
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@ -1162,6 +1175,8 @@ while (reason == 0) {
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Z = GET_Z (dst);
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V = 0;
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C = 1;
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if (hst_ent)
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hst_ent->dst = dst;
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if (dstreg)
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R[dstspec] = dst;
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else PWriteW (dst, last_pa);
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@ -1173,6 +1188,8 @@ while (reason == 0) {
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N = GET_SIGN_W (dst);
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Z = GET_Z (dst);
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V = (dst == 0100000);
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if (hst_ent)
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hst_ent->dst = dst;
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if (dstreg)
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R[dstspec] = dst;
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else PWriteW (dst, last_pa);
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@ -1184,6 +1201,8 @@ while (reason == 0) {
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N = GET_SIGN_W (dst);
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Z = GET_Z (dst);
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V = (dst == 077777);
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if (hst_ent)
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hst_ent->dst = dst;
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if (dstreg)
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R[dstspec] = dst;
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else PWriteW (dst, last_pa);
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@ -1196,6 +1215,8 @@ while (reason == 0) {
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Z = GET_Z (dst);
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V = (dst == 0100000);
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C = Z ^ 1;
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if (hst_ent)
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hst_ent->dst = dst;
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if (dstreg)
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R[dstspec] = dst;
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else PWriteW (dst, last_pa);
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@ -1208,6 +1229,8 @@ while (reason == 0) {
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Z = GET_Z (dst);
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V = (C && (dst == 0100000));
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C = C & Z;
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if (hst_ent)
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hst_ent->dst = dst;
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if (dstreg)
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R[dstspec] = dst;
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else PWriteW (dst, last_pa);
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@ -1220,6 +1243,8 @@ while (reason == 0) {
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Z = GET_Z (dst);
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V = (C && (dst == 077777));
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C = (C && (dst == 0177777));
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if (hst_ent)
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hst_ent->dst = dst;
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if (dstreg)
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R[dstspec] = dst;
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else PWriteW (dst, last_pa);
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@ -1227,6 +1252,8 @@ while (reason == 0) {
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case 057: /* TST */
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dst = dstreg? R[dstspec]: ReadW (GeteaW (dstspec));
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if (hst_ent)
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hst_ent->dst = dst;
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N = GET_SIGN_W (dst);
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Z = GET_Z (dst);
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V = C = 0;
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@ -1239,6 +1266,8 @@ while (reason == 0) {
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Z = GET_Z (dst);
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C = (src & 1);
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V = N ^ C;
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if (hst_ent)
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hst_ent->dst = dst;
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if (dstreg)
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R[dstspec] = dst;
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else PWriteW (dst, last_pa);
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@ -1251,6 +1280,8 @@ while (reason == 0) {
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Z = GET_Z (dst);
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C = GET_SIGN_W (src);
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V = N ^ C;
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if (hst_ent)
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hst_ent->dst = dst;
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if (dstreg)
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R[dstspec] = dst;
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else PWriteW (dst, last_pa);
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@ -1263,6 +1294,8 @@ while (reason == 0) {
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Z = GET_Z (dst);
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C = (src & 1);
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V = N ^ C;
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if (hst_ent)
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hst_ent->dst = dst;
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if (dstreg)
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R[dstspec] = dst;
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else PWriteW (dst, last_pa);
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@ -1275,6 +1308,8 @@ while (reason == 0) {
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Z = GET_Z (dst);
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C = GET_SIGN_W (src);
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V = N ^ C;
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if (hst_ent)
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hst_ent->dst = dst;
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if (dstreg)
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R[dstspec] = dst;
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else PWriteW (dst, last_pa);
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@ -1312,6 +1347,8 @@ while (reason == 0) {
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SP = (SP - 2) & 0177777;
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if (update_MM)
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MMR1 = calc_MMR1 (0366);
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if (hst_ent)
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hst_ent->dst = dst;
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WriteW (dst, SP | dsenable);
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if ((cm == MD_KER) && (SP < (STKLIM + STKL_Y)))
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set_stack_trap (SP);
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@ -1327,6 +1364,8 @@ while (reason == 0) {
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V = 0;
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SP = (SP + 2) & 0177777;
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if (update_MM) MMR1 = 026;
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if (hst_ent)
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hst_ent->dst = dst;
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if (dstreg) {
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if ((dstspec == 6) && (cm != pm))
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STACKFILE[pm] = dst;
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@ -1342,6 +1381,8 @@ while (reason == 0) {
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dst = N? 0177777: 0;
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Z = N ^ 1;
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V = 0;
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if (hst_ent)
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hst_ent->dst = dst;
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if (dstreg)
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R[dstspec] = dst;
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else WriteW (dst, GeteaW (dstspec));
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@ -1376,6 +1417,8 @@ while (reason == 0) {
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V = 0;
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C = (dst & 1);
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R[0] = dst; /* R[0] <- dst */
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if (hst_ent)
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hst_ent->dst = dst | 1;
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PWriteW (R[0] | 1, last_pa); /* dst <- R[0] | 1 */
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}
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else setTRAP (TRAP_ILL);
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@ -1387,6 +1430,8 @@ while (reason == 0) {
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Z = GET_Z (R[0]);
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V = 0;
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WriteW (R[0], GeteaW (dstspec));
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if (hst_ent)
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hst_ent->dst = R[0];
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}
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else setTRAP (TRAP_ILL);
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break;
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@ -1421,6 +1466,10 @@ while (reason == 0) {
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N = GET_SIGN_W (dst);
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Z = GET_Z (dst);
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V = 0;
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if (hst_ent) {
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hst_ent->src = dst;
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hst_ent->dst = dst;
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}
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if (dstreg)
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R[dstspec] = dst;
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else WriteW (dst, ea);
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@ -1436,6 +1485,10 @@ while (reason == 0) {
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src2 = dstreg? R[dstspec]: ReadW (GeteaW (dstspec));
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}
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dst = (src - src2) & 0177777;
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if (hst_ent) {
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hst_ent->src = src;
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hst_ent->dst = src2;
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}
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N = GET_SIGN_W (dst);
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Z = GET_Z (dst);
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V = GET_SIGN_W ((src ^ src2) & (~src2 ^ dst));
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@ -1452,6 +1505,10 @@ while (reason == 0) {
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src2 = dstreg? R[dstspec]: ReadW (GeteaW (dstspec));
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}
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dst = src2 & src;
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if (hst_ent) {
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hst_ent->src = src;
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hst_ent->dst = dst;
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}
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N = GET_SIGN_W (dst);
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Z = GET_Z (dst);
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V = 0;
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@ -1467,6 +1524,10 @@ while (reason == 0) {
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src2 = dstreg? R[dstspec]: ReadMW (GeteaW (dstspec));
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}
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dst = src2 & ~src;
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if (hst_ent) {
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hst_ent->src = src;
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hst_ent->dst = dst;
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}
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N = GET_SIGN_W (dst);
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Z = GET_Z (dst);
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V = 0;
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@ -1485,6 +1546,10 @@ while (reason == 0) {
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src2 = dstreg? R[dstspec]: ReadMW (GeteaW (dstspec));
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}
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dst = src2 | src;
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if (hst_ent) {
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hst_ent->src = src;
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hst_ent->dst = dst;
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}
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N = GET_SIGN_W (dst);
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Z = GET_Z (dst);
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V = 0;
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@ -1503,6 +1568,10 @@ while (reason == 0) {
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src2 = dstreg? R[dstspec]: ReadMW (GeteaW (dstspec));
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}
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dst = (src2 + src) & 0177777;
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if (hst_ent) {
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hst_ent->src = src;
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hst_ent->dst = dst;
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}
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N = GET_SIGN_W (dst);
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Z = GET_Z (dst);
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V = GET_SIGN_W ((~src ^ src2) & (src ^ dst));
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@ -1545,6 +1614,10 @@ while (reason == 0) {
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if (GET_SIGN_W (src))
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src = src | ~077777;
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dst = src * src2;
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if (hst_ent) {
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hst_ent->src = src;
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hst_ent->dst = dst;
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}
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R[srcspec] = (dst >> 16) & 0177777;
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R[srcspec | 1] = dst & 0177777;
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N = (dst < 0);
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@ -1575,6 +1648,10 @@ while (reason == 0) {
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if (GET_SIGN_W (R[srcspec]))
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src = src | ~017777777777;
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dst = src / src2;
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if (hst_ent) {
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hst_ent->src = src;
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hst_ent->dst = dst;
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}
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N = (dst < 0); /* N set on 32b result */
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if ((dst > 077777) || (dst < -0100000)) {
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V = 1; /* J11,11/70 compat */
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@ -1621,6 +1698,10 @@ while (reason == 0) {
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V = 0;
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C = ((src >> (63 - src2)) & 1);
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}
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if (hst_ent) {
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hst_ent->src = src;
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hst_ent->dst = dst;
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}
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dst = R[srcspec] = dst & 0177777;
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N = GET_SIGN_W (dst);
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Z = GET_Z (dst);
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@ -1656,6 +1737,10 @@ while (reason == 0) {
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C = ((src >> (63 - src2)) & 1);
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}
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i = R[srcspec] = (dst >> 16) & 0177777;
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if (hst_ent) {
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hst_ent->src = src;
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hst_ent->dst = dst;
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}
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dst = R[srcspec | 1] = dst & 0177777;
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N = GET_SIGN_W (i);
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Z = GET_Z (dst | i);
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@ -1672,6 +1757,10 @@ while (reason == 0) {
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src2 = dstreg? R[dstspec]: ReadMW (GeteaW (dstspec));
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}
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dst = src ^ src2;
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if (hst_ent) {
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hst_ent->src = src;
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hst_ent->dst = dst;
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}
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N = GET_SIGN_W (dst);
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Z = GET_Z (dst);
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V = 0;
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@ -1702,6 +1791,8 @@ while (reason == 0) {
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case 7: /* SOB */
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if (CPUT (HAS_SXS)) {
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R[srcspec] = (R[srcspec] - 1) & 0177777;
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if (hst_ent)
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hst_ent->dst = R[srcspec];
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if (R[srcspec]) {
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JMP_PC ((PC - dstspec - dstspec) & 0177777);
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}
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@ -1826,6 +1917,11 @@ while (reason == 0) {
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if (dstreg)
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R[dstspec] = R[dstspec] & 0177400;
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else WriteB (0, GeteaB (dstspec));
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if (hst_ent) {
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if (dstreg)
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hst_ent->dst = R[dstspec];
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else hst_ent->dst = 0;
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}
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break;
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case 051: /* COMB */
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@ -1838,6 +1934,11 @@ while (reason == 0) {
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if (dstreg)
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R[dstspec] = (R[dstspec] & 0177400) | dst;
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else PWriteB (dst, last_pa);
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if (hst_ent) {
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if (dstreg)
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hst_ent->dst = R[dstspec];
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else hst_ent->dst = dst;
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}
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break;
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case 052: /* INCB */
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@ -1849,6 +1950,11 @@ while (reason == 0) {
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if (dstreg)
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R[dstspec] = (R[dstspec] & 0177400) | dst;
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else PWriteB (dst, last_pa);
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if (hst_ent) {
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if (dstreg)
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hst_ent->dst = R[dstspec];
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else hst_ent->dst = dst;
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}
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break;
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case 053: /* DECB */
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@ -1860,6 +1966,11 @@ while (reason == 0) {
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if (dstreg)
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R[dstspec] = (R[dstspec] & 0177400) | dst;
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else PWriteB (dst, last_pa);
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if (hst_ent) {
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if (dstreg)
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hst_ent->dst = R[dstspec];
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else hst_ent->dst = dst;
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}
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break;
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case 054: /* NEGB */
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@ -1872,6 +1983,11 @@ while (reason == 0) {
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if (dstreg)
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R[dstspec] = (R[dstspec] & 0177400) | dst;
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else PWriteB (dst, last_pa);
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if (hst_ent) {
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if (dstreg)
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hst_ent->dst = R[dstspec];
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else hst_ent->dst = dst;
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}
|
||||
break;
|
||||
|
||||
case 055: /* ADCB */
|
||||
|
|
@ -1884,6 +2000,11 @@ while (reason == 0) {
|
|||
if (dstreg)
|
||||
R[dstspec] = (R[dstspec] & 0177400) | dst;
|
||||
else PWriteB (dst, last_pa);
|
||||
if (hst_ent) {
|
||||
if (dstreg)
|
||||
hst_ent->dst = R[dstspec];
|
||||
else hst_ent->dst = dst;
|
||||
}
|
||||
break;
|
||||
|
||||
case 056: /* SBCB */
|
||||
|
|
@ -1896,10 +2017,17 @@ while (reason == 0) {
|
|||
if (dstreg)
|
||||
R[dstspec] = (R[dstspec] & 0177400) | dst;
|
||||
else PWriteB (dst, last_pa);
|
||||
if (hst_ent) {
|
||||
if (dstreg)
|
||||
hst_ent->dst = R[dstspec];
|
||||
else hst_ent->dst = dst;
|
||||
}
|
||||
break;
|
||||
|
||||
case 057: /* TSTB */
|
||||
dst = dstreg? R[dstspec] & 0377: ReadB (GeteaB (dstspec));
|
||||
if (hst_ent)
|
||||
hst_ent->dst = dst;
|
||||
N = GET_SIGN_B (dst);
|
||||
Z = GET_Z (dst);
|
||||
V = C = 0;
|
||||
|
|
@ -1915,6 +2043,11 @@ while (reason == 0) {
|
|||
if (dstreg)
|
||||
R[dstspec] = (R[dstspec] & 0177400) | dst;
|
||||
else PWriteB (dst, last_pa);
|
||||
if (hst_ent) {
|
||||
if (dstreg)
|
||||
hst_ent->dst = R[dstspec];
|
||||
else hst_ent->dst = dst;
|
||||
}
|
||||
break;
|
||||
|
||||
case 061: /* ROLB */
|
||||
|
|
@ -1927,6 +2060,11 @@ while (reason == 0) {
|
|||
if (dstreg)
|
||||
R[dstspec] = (R[dstspec] & 0177400) | dst;
|
||||
else PWriteB (dst, last_pa);
|
||||
if (hst_ent) {
|
||||
if (dstreg)
|
||||
hst_ent->dst = R[dstspec];
|
||||
else hst_ent->dst = dst;
|
||||
}
|
||||
break;
|
||||
|
||||
case 062: /* ASRB */
|
||||
|
|
@ -1939,6 +2077,11 @@ while (reason == 0) {
|
|||
if (dstreg)
|
||||
R[dstspec] = (R[dstspec] & 0177400) | dst;
|
||||
else PWriteB (dst, last_pa);
|
||||
if (hst_ent) {
|
||||
if (dstreg)
|
||||
hst_ent->dst = R[dstspec];
|
||||
else hst_ent->dst = dst;
|
||||
}
|
||||
break;
|
||||
|
||||
case 063: /* ASLB */
|
||||
|
|
@ -1951,6 +2094,11 @@ while (reason == 0) {
|
|||
if (dstreg)
|
||||
R[dstspec] = (R[dstspec] & 0177400) | dst;
|
||||
else PWriteB (dst, last_pa);
|
||||
if (hst_ent) {
|
||||
if (dstreg)
|
||||
hst_ent->dst = R[dstspec];
|
||||
else hst_ent->dst = dst;
|
||||
}
|
||||
break;
|
||||
|
||||
/* Notes:
|
||||
|
|
@ -1988,6 +2136,8 @@ while (reason == 0) {
|
|||
SP = (SP - 2) & 0177777;
|
||||
if (update_MM)
|
||||
MMR1 = calc_MMR1 (0366);
|
||||
if (hst_ent)
|
||||
hst_ent->dst = dst;
|
||||
WriteW (dst, SP | dsenable);
|
||||
if ((cm == MD_KER) && (SP < (STKLIM + STKL_Y)))
|
||||
set_stack_trap (SP);
|
||||
|
|
@ -2004,6 +2154,8 @@ while (reason == 0) {
|
|||
SP = (SP + 2) & 0177777;
|
||||
if (update_MM)
|
||||
MMR1 = 026;
|
||||
if (hst_ent)
|
||||
hst_ent->dst = dst;
|
||||
if (dstreg) {
|
||||
if ((dstspec == 6) && (cm != pm))
|
||||
STACKFILE[pm] = dst;
|
||||
|
|
@ -2055,6 +2207,10 @@ while (reason == 0) {
|
|||
if (dstreg)
|
||||
R[dstspec] = (dst & 0200)? 0177400 | dst: dst;
|
||||
else WriteB (dst, ea);
|
||||
if (hst_ent) {
|
||||
hst_ent->src = srcreg? R[srcspec]: dst;
|
||||
hst_ent->dst = dstreg? R[dstspec]: dst;
|
||||
}
|
||||
break;
|
||||
|
||||
case 012: /* CMPB */
|
||||
|
|
@ -2066,6 +2222,10 @@ while (reason == 0) {
|
|||
src = srcreg? R[srcspec] & 0377: ReadB (GeteaB (srcspec));
|
||||
src2 = dstreg? R[dstspec] & 0377: ReadB (GeteaB (dstspec));
|
||||
}
|
||||
if (hst_ent) {
|
||||
hst_ent->src = src;
|
||||
hst_ent->dst = src2;
|
||||
}
|
||||
dst = (src - src2) & 0377;
|
||||
N = GET_SIGN_B (dst);
|
||||
Z = GET_Z (dst);
|
||||
|
|
@ -2083,6 +2243,10 @@ while (reason == 0) {
|
|||
src2 = dstreg? R[dstspec] & 0377: ReadB (GeteaB (dstspec));
|
||||
}
|
||||
dst = (src2 & src) & 0377;
|
||||
if (hst_ent) {
|
||||
hst_ent->src = src;
|
||||
hst_ent->dst = dst;
|
||||
}
|
||||
N = GET_SIGN_B (dst);
|
||||
Z = GET_Z (dst);
|
||||
V = 0;
|
||||
|
|
@ -2098,6 +2262,10 @@ while (reason == 0) {
|
|||
src2 = dstreg? R[dstspec]: ReadMB (GeteaB (dstspec));
|
||||
}
|
||||
dst = (src2 & ~src) & 0377;
|
||||
if (hst_ent) {
|
||||
hst_ent->src = src;
|
||||
hst_ent->dst = dst;
|
||||
}
|
||||
N = GET_SIGN_B (dst);
|
||||
Z = GET_Z (dst);
|
||||
V = 0;
|
||||
|
|
@ -2116,6 +2284,10 @@ while (reason == 0) {
|
|||
src2 = dstreg? R[dstspec]: ReadMB (GeteaB (dstspec));
|
||||
}
|
||||
dst = (src2 | src) & 0377;
|
||||
if (hst_ent) {
|
||||
hst_ent->src = src;
|
||||
hst_ent->dst = dst;
|
||||
}
|
||||
N = GET_SIGN_B (dst);
|
||||
Z = GET_Z (dst);
|
||||
V = 0;
|
||||
|
|
@ -2134,6 +2306,10 @@ while (reason == 0) {
|
|||
src2 = dstreg? R[dstspec]: ReadMW (GeteaW (dstspec));
|
||||
}
|
||||
dst = (src2 - src) & 0177777;
|
||||
if (hst_ent) {
|
||||
hst_ent->src = src;
|
||||
hst_ent->dst = dst;
|
||||
}
|
||||
N = GET_SIGN_W (dst);
|
||||
Z = GET_Z (dst);
|
||||
V = GET_SIGN_W ((src ^ src2) & (~src ^ dst));
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue