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Dribs and drabs which have escaped

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This commit is contained in:
Jasmine Iwanek
2023-08-11 20:32:56 -04:00
parent 9be5d17061
commit 02e41927e3
25 changed files with 398 additions and 326 deletions
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35
src/cpu/808x.c
View File

@@ -462,6 +462,9 @@ cycles_biu(int bus, int init)
cycles_idle(5 - BUS_CYCLE); /* Leftover BIU cycles + 2 idle cycles. */
BUS_CYCLE_T1; /* Abort the prefetch. */
break;
default:
break;
}
schedule_fetch = 0;
@@ -1035,6 +1038,9 @@ do_mod_rm(void)
case 2:
wait(3, 0);
break;
default:
break;
}
cpu_state.eaaddr = (*mod1add[0][cpu_rm]) + (*mod1add[1][cpu_rm]);
easeg = ovr_seg ? *ovr_seg : *mod1seg[cpu_rm];
@@ -1049,6 +1055,8 @@ do_mod_rm(void)
cpu_state.eaaddr += pfq_fetchw();
wait(1, 0);
break;
default:
break;
}
cpu_state.eaaddr &= 0xffff;
wait(2, 0);
@@ -1591,6 +1599,9 @@ alu_op(int bits)
case 6:
bitwise(bits, (cpu_dest ^ cpu_src));
break;
default:
break;
}
}
@@ -2274,6 +2285,9 @@ execx86(int cycs)
set_af(0);
set_pzs(bits);
break;
default:
break;
}
if ((opcode & 2) != 0)
wait(4, 0);
@@ -2288,6 +2302,9 @@ execx86(int cycs)
BP = pop();
handled = 1;
break;
default:
break;
}
}
if (!handled) {
@@ -3433,6 +3450,9 @@ execx86(int cycs)
set_af(0);
set_pzs(bits);
break;
default:
break;
}
if ((opcode & 2) != 0)
wait(4, 0);
@@ -3517,6 +3537,9 @@ execx86(int cycs)
case 0xDF:
ops_sf_fpu_8087_df[rmdat & 0xff](rmdat);
break;
default:
break;
}
} else {
switch (opcode) {
@@ -3544,6 +3567,9 @@ execx86(int cycs)
case 0xDF:
ops_fpu_8087_df[rmdat & 0xff](rmdat);
break;
default:
break;
}
}
}
@@ -3572,6 +3598,9 @@ execx86(int cycs)
if (!(cpu_state.flags & Z_FLAG))
oldc = 0;
break;
default:
break;
}
} else
oldc = (CX == 0);
@@ -3744,6 +3773,9 @@ execx86(int cycs)
if (x86_div(AL, AH))
wait(1, 0);
break;
default:
break;
}
break;
@@ -3843,6 +3875,9 @@ execx86(int cycs)
wait(4, 0);
push((uint16_t *) &cpu_data);
break;
default:
break;
}
break;

12
src/cpu/x87_ops_conv.h
View File

@@ -22,7 +22,7 @@ x87_from80(x87_conv_t *test)
blah = ((exp64 > 0) ? exp64 : -exp64) & 0x3ff;
exp64final = ((exp64 > 0) ? blah : -blah) + BIAS64;
mant64 = (test->eind.ll >> 11) & (0xfffffffffffffll);
mant64 = (test->eind.ll >> 11) & (0xfffffffffffffLL);
sign = (test->begin & 0x8000) ? 1 : 0;
if ((test->begin & 0x7fff) == 0x7fff)
@@ -48,19 +48,19 @@ x87_to80(double d, x87_conv_t *test)
test->eind.d = d;
sign80 = (test->eind.ll & (0x8000000000000000ll)) ? 1 : 0;
exp80 = test->eind.ll & (0x7ff0000000000000ll);
sign80 = (test->eind.ll & (0x8000000000000000LL)) ? 1 : 0;
exp80 = test->eind.ll & (0x7ff0000000000000LL);
exp80final = (exp80 >> 52);
mant80 = test->eind.ll & (0x000fffffffffffffll);
mant80 = test->eind.ll & (0x000fffffffffffffLL);
mant80final = (mant80 << 11);
if (exp80final == 0x7ff) /*Infinity / Nan*/
{
exp80final = 0x7fff;
mant80final |= (0x8000000000000000ll);
mant80final |= (0x8000000000000000LL);
} else if (d != 0) { /* Zero is a special case */
/* Elvira wants the 8 and tcalc doesn't */
mant80final |= (0x8000000000000000ll);
mant80final |= (0x8000000000000000LL);
/* Ca-cyber doesn't like this when result is zero. */
exp80final += (BIAS80 - BIAS64);
}

2
src/cpu/x87_ops_misc.h
View File

@@ -193,7 +193,7 @@ FSTOR(void)
something like this is needed*/
p = (uint64_t *) cpu_state.tag;
#ifdef USE_NEW_DYNAREC
if (cpu_state.MM_w4[0] == 0xffff && cpu_state.MM_w4[1] == 0xffff && cpu_state.MM_w4[2] == 0xffff && cpu_state.MM_w4[3] == 0xffff && cpu_state.MM_w4[4] == 0xffff && cpu_state.MM_w4[5] == 0xffff && cpu_state.MM_w4[6] == 0xffff && cpu_state.MM_w4[7] == 0xffff && !cpu_state.TOP && (*p == 0x0101010101010101ull))
if (cpu_state.MM_w4[0] == 0xffff && cpu_state.MM_w4[1] == 0xffff && cpu_state.MM_w4[2] == 0xffff && cpu_state.MM_w4[3] == 0xffff && cpu_state.MM_w4[4] == 0xffff && cpu_state.MM_w4[5] == 0xffff && cpu_state.MM_w4[6] == 0xffff && cpu_state.MM_w4[7] == 0xffff && !cpu_state.TOP && (*p == 0x0101010101010101ULL))
#else
if (cpu_state.MM_w4[0] == 0xffff && cpu_state.MM_w4[1] == 0xffff && cpu_state.MM_w4[2] == 0xffff && cpu_state.MM_w4[3] == 0xffff && cpu_state.MM_w4[4] == 0xffff && cpu_state.MM_w4[5] == 0xffff && cpu_state.MM_w4[6] == 0xffff && cpu_state.MM_w4[7] == 0xffff && !cpu_state.TOP && !(*p))
#endif