/* */
/* */
/* */
-/* (C) 2001-2002 Ullrich von Bassewitz */
-/* Wacholderweg 14 */
-/* D-70597 Stuttgart */
-/* EMail: uz@musoftware.de */
+/* (C) 2001-2003 Ullrich von Bassewitz */
+/* Römerstrasse 52 */
+/* D-70794 Filderstadt */
+/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* common */
#include "chartype.h"
#include "check.h"
+#include "debugflag.h"
#include "xmalloc.h"
#include "xsprintf.h"
/* Check for special zero page registers used */
switch (E->AM) {
+ case AM65_ACC:
+ if (E->OPC == OP65_ASL || E->OPC == OP65_DEC ||
+ E->OPC == OP65_INC || E->OPC == OP65_LSR ||
+ E->OPC == OP65_ROL || E->OPC == OP65_ROR) {
+ /* A is changed by these insns */
+ E->Chg |= REG_A;
+ }
+ break;
+
case AM65_ZP:
case AM65_ABS:
/* Be conservative: */
+const char* MakeHexArg (unsigned Num)
+/* Convert Num into a string in the form $XY, suitable for passing it as an
+ * argument to NewCodeEntry, and return a pointer to the string.
+ * BEWARE: The function returns a pointer to a static buffer, so the value is
+ * gone if you call it twice (and apart from that it's not thread and signal
+ * safe).
+ */
+{
+ static char Buf[16];
+ xsprintf (Buf, sizeof (Buf), "$%02X", (unsigned char) Num);
+ return Buf;
+}
+
+
+
CodeEntry* NewCodeEntry (opc_t OPC, am_t AM, const char* Arg,
CodeLabel* JumpTo, LineInfo* LI)
/* Create a new code entry, initialize and return it */
/* Initialize the fields */
E->OPC = D->OPC;
E->AM = AM;
+ E->Size = GetInsnSize (E->OPC, E->AM);
E->Arg = GetArgCopy (Arg);
- E->Flags = NumArg (E->Arg, &E->Num)? CEF_NUMARG : 0;
+ E->Flags = NumArg (E->Arg, &E->Num)? CEF_NUMARG : 0; /* Needs E->Arg */
E->Info = D->Info;
- E->Size = GetInsnSize (E->OPC, E->AM);
E->JumpTo = JumpTo;
E->LI = UseLineInfo (LI);
E->RI = 0;
+int CE_UseLoadFlags (const CodeEntry* E)
+/* Return true if the instruction uses any flags that are set by a load of
+ * a register (N and Z).
+ */
+{
+ /* A branch will use the flags */
+ if (E->Info & OF_FBRA) {
+ return 1;
+ }
+
+ /* Call of a boolean transformer routine will also use the flags */
+ if (E->OPC == OP65_JSR) {
+ /* Get the condition that is evaluated and check it */
+ switch (FindBoolCmpCond (E->Arg)) {
+ case CMP_EQ:
+ case CMP_NE:
+ case CMP_GT:
+ case CMP_GE:
+ case CMP_LT:
+ case CMP_LE:
+ case CMP_UGT:
+ case CMP_ULE:
+ /* Will use the N or Z flags */
+ return 1;
+
+
+ case CMP_UGE: /* Uses only carry */
+ case CMP_ULT: /* Dito */
+ default: /* No bool transformer subroutine */
+ return 0;
+ }
+ }
+
+ /* Anything else */
+ return 0;
+}
+
+
+
void CE_FreeRegInfo (CodeEntry* E)
/* Free an existing register info struct */
{
/* We don't know the value of the carry, so the result is
* always unknown.
*/
- Out->RegA = -1;
+ Out->RegA = UNKNOWN_REGVAL;
break;
case OP65_AND:
- if (In->RegA >= 0) {
+ if (RegValIsKnown (In->RegA)) {
if (CE_KnownImm (E)) {
Out->RegA = In->RegA & (short) E->Num;
+ } else if (E->AM == AM65_ZP) {
+ switch (GetKnownReg (E->Use & REG_ZP, In)) {
+ case REG_TMP1:
+ Out->RegA = In->RegA & In->Tmp1;
+ break;
+ case REG_PTR1_LO:
+ Out->RegA = In->RegA & In->Ptr1Lo;
+ break;
+ case REG_PTR1_HI:
+ Out->RegA = In->RegA & In->Ptr1Hi;
+ break;
+ case REG_SREG_LO:
+ Out->RegA = In->RegA & In->SRegLo;
+ break;
+ case REG_SREG_HI:
+ Out->RegA = In->RegA & In->SRegHi;
+ break;
+ default:
+ Out->RegA = UNKNOWN_REGVAL;
+ break;
+ }
} else {
- Out->RegA = -1;
+ Out->RegA = UNKNOWN_REGVAL;
}
}
break;
case OP65_ASL:
- if (E->AM == AM65_ACC && In->RegA >= 0) {
+ if (E->AM == AM65_ACC && RegValIsKnown (In->RegA)) {
Out->RegA = (In->RegA << 1) & 0xFF;
} else if (E->AM == AM65_ZP) {
- if ((E->Chg & REG_SREG_LO) != 0 && In->SRegLo >= 0) {
- Out->SRegLo = (In->SRegLo << 1) & 0xFF;
- } else if ((E->Chg & REG_SREG_HI) != 0 && In->SRegHi >= 0) {
- Out->SRegHi = (In->SRegHi << 1) & 0xFF;
+ switch (GetKnownReg (E->Chg & REG_ZP, In)) {
+ case REG_TMP1:
+ Out->Tmp1 = (In->Tmp1 << 1) & 0xFF;
+ break;
+ case REG_PTR1_LO:
+ Out->Ptr1Lo = (In->Ptr1Lo << 1) & 0xFF;
+ break;
+ case REG_PTR1_HI:
+ Out->Ptr1Hi = (In->Ptr1Hi << 1) & 0xFF;
+ break;
+ case REG_SREG_LO:
+ Out->SRegLo = (In->SRegLo << 1) & 0xFF;
+ break;
+ case REG_SREG_HI:
+ Out->SRegHi = (In->SRegHi << 1) & 0xFF;
+ break;
}
} else if (E->AM == AM65_ZPX) {
/* Invalidates all ZP registers */
break;
case OP65_DEA:
- if (In->RegA >= 0) {
+ if (RegValIsKnown (In->RegA)) {
Out->RegA = (In->RegA - 1) & 0xFF;
}
break;
case OP65_DEC:
- if (E->AM == AM65_ACC && In->RegA >= 0) {
+ if (E->AM == AM65_ACC && RegValIsKnown (In->RegA)) {
Out->RegA = (In->RegA - 1) & 0xFF;
} else if (E->AM == AM65_ZP) {
- if ((E->Chg & REG_SREG_LO) != 0 && In->SRegLo >= 0) {
- Out->SRegLo = (In->SRegLo - 1) & 0xFF;
- } else if ((E->Chg & REG_SREG_HI) != 0 && In->SRegHi >= 0) {
- Out->SRegHi = (In->SRegHi - 1) & 0xFF;
+ switch (GetKnownReg (E->Chg & REG_ZP, In)) {
+ case REG_TMP1:
+ Out->Tmp1 = (In->Tmp1 - 1) & 0xFF;
+ break;
+ case REG_PTR1_LO:
+ Out->Ptr1Lo = (In->Ptr1Lo - 1) & 0xFF;
+ break;
+ case REG_PTR1_HI:
+ Out->Ptr1Hi = (In->Ptr1Hi - 1) & 0xFF;
+ break;
+ case REG_SREG_LO:
+ Out->SRegLo = (In->SRegLo - 1) & 0xFF;
+ break;
+ case REG_SREG_HI:
+ Out->SRegHi = (In->SRegHi - 1) & 0xFF;
+ break;
}
} else if (E->AM == AM65_ZPX) {
/* Invalidates all ZP registers */
break;
case OP65_DEX:
- if (In->RegX >= 0) {
+ if (RegValIsKnown (In->RegX)) {
Out->RegX = (In->RegX - 1) & 0xFF;
}
break;
case OP65_DEY:
- if (In->RegY >= 0) {
+ if (RegValIsKnown (In->RegY)) {
Out->RegY = (In->RegY - 1) & 0xFF;
}
break;
case OP65_EOR:
- if (In->RegA >= 0) {
+ if (RegValIsKnown (In->RegA)) {
if (CE_KnownImm (E)) {
Out->RegA = In->RegA ^ (short) E->Num;
+ } else if (E->AM == AM65_ZP) {
+ switch (GetKnownReg (E->Use & REG_ZP, In)) {
+ case REG_TMP1:
+ Out->RegA = In->RegA ^ In->Tmp1;
+ break;
+ case REG_PTR1_LO:
+ Out->RegA = In->RegA ^ In->Ptr1Lo;
+ break;
+ case REG_PTR1_HI:
+ Out->RegA = In->RegA ^ In->Ptr1Hi;
+ break;
+ case REG_SREG_LO:
+ Out->RegA = In->RegA ^ In->SRegLo;
+ break;
+ case REG_SREG_HI:
+ Out->RegA = In->RegA ^ In->SRegHi;
+ break;
+ default:
+ Out->RegA = UNKNOWN_REGVAL;
+ break;
+ }
} else {
- Out->RegA = -1;
+ Out->RegA = UNKNOWN_REGVAL;
}
}
break;
case OP65_INA:
- if (In->RegA >= 0) {
+ if (RegValIsKnown (In->RegA)) {
Out->RegA = (In->RegA + 1) & 0xFF;
}
break;
case OP65_INC:
- if (E->AM == AM65_ACC && In->RegA >= 0) {
- Out->RegA = (In->RegA + 1) & 0xFF;
+ if (E->AM == AM65_ACC && RegValIsKnown (In->RegA)) {
+ Out->RegA = (In->RegA + 1) & 0xFF;
} else if (E->AM == AM65_ZP) {
- if ((E->Chg & REG_SREG_LO) != 0 && In->SRegLo >= 0) {
- Out->SRegLo = (In->SRegLo + 1) & 0xFF;
- } else if ((E->Chg & REG_SREG_HI) != 0 && In->SRegHi >= 0) {
- Out->SRegHi = (In->SRegHi + 1) & 0xFF;
+ switch (GetKnownReg (E->Chg & REG_ZP, In)) {
+ case REG_TMP1:
+ Out->Tmp1 = (In->Tmp1 + 1) & 0xFF;
+ break;
+ case REG_PTR1_LO:
+ Out->Ptr1Lo = (In->Ptr1Lo + 1) & 0xFF;
+ break;
+ case REG_PTR1_HI:
+ Out->Ptr1Hi = (In->Ptr1Hi + 1) & 0xFF;
+ break;
+ case REG_SREG_LO:
+ Out->SRegLo = (In->SRegLo + 1) & 0xFF;
+ break;
+ case REG_SREG_HI:
+ Out->SRegHi = (In->SRegHi + 1) & 0xFF;
+ break;
}
} else if (E->AM == AM65_ZPX) {
/* Invalidates all ZP registers */
break;
case OP65_INX:
- if (In->RegX >= 0) {
+ if (RegValIsKnown (In->RegX)) {
Out->RegX = (In->RegX + 1) & 0xFF;
}
break;
case OP65_INY:
- if (In->RegY >= 0) {
+ if (RegValIsKnown (In->RegY)) {
Out->RegY = (In->RegY + 1) & 0xFF;
}
break;
/* Get the code info for the function */
GetFuncInfo (E->Arg, &Use, &Chg);
if (Chg & REG_A) {
- Out->RegA = -1;
+ Out->RegA = UNKNOWN_REGVAL;
}
if (Chg & REG_X) {
- Out->RegX = -1;
+ Out->RegX = UNKNOWN_REGVAL;
}
if (Chg & REG_Y) {
- Out->RegY = -1;
+ Out->RegY = UNKNOWN_REGVAL;
+ }
+ if (Chg & REG_TMP1) {
+ Out->Tmp1 = UNKNOWN_REGVAL;
+ }
+ if (Chg & REG_PTR1_LO) {
+ Out->Ptr1Lo = UNKNOWN_REGVAL;
+ }
+ if (Chg & REG_PTR1_HI) {
+ Out->Ptr1Hi = UNKNOWN_REGVAL;
}
if (Chg & REG_SREG_LO) {
- Out->SRegLo = -1;
+ Out->SRegLo = UNKNOWN_REGVAL;
}
if (Chg & REG_SREG_HI) {
- Out->SRegHi = -1;
+ Out->SRegHi = UNKNOWN_REGVAL;
}
+ /* ## FIXME: Quick hack for some known functions: */
+ if (strcmp (E->Arg, "tosandax") == 0) {
+ if (In->RegA == 0) {
+ Out->RegA = 0;
+ }
+ if (In->RegX == 0) {
+ Out->RegX = 0;
+ }
+ } else if (strcmp (E->Arg, "tosorax") == 0) {
+ if (In->RegA == 0xFF) {
+ Out->RegA = 0xFF;
+ }
+ if (In->RegX == 0xFF) {
+ Out->RegX = 0xFF;
+ }
+ } else if (FindBoolCmpCond (E->Arg) != CMP_INV) {
+ Out->RegX = 0;
+ }
break;
case OP65_JVC:
if (CE_KnownImm (E)) {
Out->RegA = (unsigned char) E->Num;
} else if (E->AM == AM65_ZP) {
- if (E->Use & REG_SREG_LO) {
- Out->RegA = In->SRegLo;
- } else if (E->Use & REG_SREG_HI) {
- Out->RegA = In->SRegHi;
- } else {
- Out->RegA = -1;
+ switch (GetKnownReg (E->Use & REG_ZP, In)) {
+ case REG_TMP1:
+ Out->RegA = In->Tmp1;
+ break;
+ case REG_PTR1_LO:
+ Out->RegA = In->Ptr1Lo;
+ break;
+ case REG_PTR1_HI:
+ Out->RegA = In->Ptr1Hi;
+ break;
+ case REG_SREG_LO:
+ Out->RegA = In->SRegLo;
+ break;
+ case REG_SREG_HI:
+ Out->RegA = In->SRegHi;
+ break;
+ default:
+ Out->RegA = UNKNOWN_REGVAL;
+ break;
}
} else {
/* A is now unknown */
- Out->RegA = -1;
+ Out->RegA = UNKNOWN_REGVAL;
}
break;
if (CE_KnownImm (E)) {
Out->RegX = (unsigned char) E->Num;
} else if (E->AM == AM65_ZP) {
- if (E->Use & REG_SREG_LO) {
- Out->RegX = In->SRegLo;
- } else if (E->Use & REG_SREG_HI) {
- Out->RegX = In->SRegHi;
- } else {
- Out->RegX = -1;
+ switch (GetKnownReg (E->Use & REG_ZP, In)) {
+ case REG_TMP1:
+ Out->RegX = In->Tmp1;
+ break;
+ case REG_PTR1_LO:
+ Out->RegX = In->Ptr1Lo;
+ break;
+ case REG_PTR1_HI:
+ Out->RegX = In->Ptr1Hi;
+ break;
+ case REG_SREG_LO:
+ Out->RegX = In->SRegLo;
+ break;
+ case REG_SREG_HI:
+ Out->RegX = In->SRegHi;
+ break;
+ default:
+ Out->RegX = UNKNOWN_REGVAL;
+ break;
}
} else {
/* X is now unknown */
- Out->RegX = -1;
+ Out->RegX = UNKNOWN_REGVAL;
}
break;
if (CE_KnownImm (E)) {
Out->RegY = (unsigned char) E->Num;
} else if (E->AM == AM65_ZP) {
- if (E->Use & REG_SREG_LO) {
- Out->RegY = In->SRegLo;
- } else if (E->Use & REG_SREG_HI) {
- Out->RegY = In->SRegHi;
- } else {
- Out->RegY = -1;
+ switch (GetKnownReg (E->Use & REG_ZP, In)) {
+ case REG_TMP1:
+ Out->RegY = In->Tmp1;
+ break;
+ case REG_PTR1_LO:
+ Out->RegY = In->Ptr1Lo;
+ break;
+ case REG_PTR1_HI:
+ Out->RegY = In->Ptr1Hi;
+ break;
+ case REG_SREG_LO:
+ Out->RegY = In->SRegLo;
+ break;
+ case REG_SREG_HI:
+ Out->RegY = In->SRegHi;
+ break;
+ default:
+ Out->RegY = UNKNOWN_REGVAL;
+ break;
}
} else {
/* Y is now unknown */
- Out->RegY = -1;
+ Out->RegY = UNKNOWN_REGVAL;
}
break;
case OP65_LSR:
- if (E->AM == AM65_ACC && In->RegA >= 0) {
+ if (E->AM == AM65_ACC && RegValIsKnown (In->RegA)) {
Out->RegA = (In->RegA >> 1) & 0xFF;
} else if (E->AM == AM65_ZP) {
- if ((E->Chg & REG_SREG_LO) != 0 && In->SRegLo >= 0) {
- Out->SRegLo = (In->SRegLo >> 1) & 0xFF;
- } else if (E->Chg & REG_SREG_HI) {
- Out->SRegHi = (In->SRegHi >> 1) & 0xFF;
+ switch (GetKnownReg (E->Chg & REG_ZP, In)) {
+ case REG_TMP1:
+ Out->Tmp1 = (In->Tmp1 >> 1) & 0xFF;
+ break;
+ case REG_PTR1_LO:
+ Out->Ptr1Lo = (In->Ptr1Lo >> 1) & 0xFF;
+ break;
+ case REG_PTR1_HI:
+ Out->Ptr1Hi = (In->Ptr1Hi >> 1) & 0xFF;
+ break;
+ case REG_SREG_LO:
+ Out->SRegLo = (In->SRegLo >> 1) & 0xFF;
+ break;
+ case REG_SREG_HI:
+ Out->SRegHi = (In->SRegHi >> 1) & 0xFF;
+ break;
}
} else if (E->AM == AM65_ZPX) {
/* Invalidates all ZP registers */
break;
case OP65_ORA:
- if (In->RegA >= 0) {
- if (CE_KnownImm (E)) {
- Out->RegA = In->RegA | (short) E->Num;
- } else {
- /* A is now unknown */
- Out->RegA = -1;
- }
+ if (RegValIsKnown (In->RegA)) {
+ if (CE_KnownImm (E)) {
+ Out->RegA = In->RegA | (short) E->Num;
+ } else if (E->AM == AM65_ZP) {
+ switch (GetKnownReg (E->Use & REG_ZP, In)) {
+ case REG_TMP1:
+ Out->RegA = In->RegA | In->Tmp1;
+ break;
+ case REG_PTR1_LO:
+ Out->RegA = In->RegA | In->Ptr1Lo;
+ break;
+ case REG_PTR1_HI:
+ Out->RegA = In->RegA | In->Ptr1Hi;
+ break;
+ case REG_SREG_LO:
+ Out->RegA = In->RegA | In->SRegLo;
+ break;
+ case REG_SREG_HI:
+ Out->RegA = In->RegA | In->SRegHi;
+ break;
+ default:
+ Out->RegA = UNKNOWN_REGVAL;
+ break;
+ }
+ } else {
+ /* A is now unknown */
+ Out->RegA = UNKNOWN_REGVAL;
+ }
}
break;
break;
case OP65_PLA:
- Out->RegA = -1;
+ Out->RegA = UNKNOWN_REGVAL;
break;
case OP65_PLP:
break;
case OP65_PLX:
- Out->RegX = -1;
+ Out->RegX = UNKNOWN_REGVAL;
break;
case OP65_PLY:
- Out->RegY = -1;
+ Out->RegY = UNKNOWN_REGVAL;
break;
case OP65_ROL:
+ /* We don't know the value of the carry bit */
if (E->AM == AM65_ACC) {
- Out->RegA = -1;
+ Out->RegA = UNKNOWN_REGVAL;
} else if (E->AM == AM65_ZP) {
- if (E->Chg & REG_SREG_LO) {
- Out->SRegLo = -1;
- } else if (E->Chg & REG_SREG_HI) {
- Out->SRegHi = -1;
- }
+ switch (GetKnownReg (E->Chg & REG_ZP, In)) {
+ case REG_TMP1:
+ Out->Tmp1 = UNKNOWN_REGVAL;
+ break;
+ case REG_PTR1_LO:
+ Out->Ptr1Lo = UNKNOWN_REGVAL;
+ break;
+ case REG_PTR1_HI:
+ Out->Ptr1Hi = UNKNOWN_REGVAL;
+ break;
+ case REG_SREG_LO:
+ Out->SRegLo = UNKNOWN_REGVAL;
+ break;
+ case REG_SREG_HI:
+ Out->SRegHi = UNKNOWN_REGVAL;
+ break;
+ }
} else if (E->AM == AM65_ZPX) {
/* Invalidates all ZP registers */
RC_InvalidateZP (Out);
break;
case OP65_ROR:
+ /* We don't know the value of the carry bit */
if (E->AM == AM65_ACC) {
- Out->RegA = -1;
+ Out->RegA = UNKNOWN_REGVAL;
} else if (E->AM == AM65_ZP) {
- if (E->Chg & REG_SREG_LO) {
- Out->SRegLo = -1;
- } else if (E->Chg & REG_SREG_HI) {
- Out->SRegHi = -1;
- }
+ switch (GetKnownReg (E->Chg & REG_ZP, In)) {
+ case REG_TMP1:
+ Out->Tmp1 = UNKNOWN_REGVAL;
+ break;
+ case REG_PTR1_LO:
+ Out->Ptr1Lo = UNKNOWN_REGVAL;
+ break;
+ case REG_PTR1_HI:
+ Out->Ptr1Hi = UNKNOWN_REGVAL;
+ break;
+ case REG_SREG_LO:
+ Out->SRegLo = UNKNOWN_REGVAL;
+ break;
+ case REG_SREG_HI:
+ Out->SRegHi = UNKNOWN_REGVAL;
+ break;
+ }
} else if (E->AM == AM65_ZPX) {
/* Invalidates all ZP registers */
RC_InvalidateZP (Out);
case OP65_SBC:
/* We don't know the value of the carry bit */
- Out->RegA = -1;
+ Out->RegA = UNKNOWN_REGVAL;
break;
case OP65_SEC:
case OP65_STA:
if (E->AM == AM65_ZP) {
- if (E->Chg & REG_SREG_LO) {
- Out->SRegLo = In->RegA;
- } else if (E->Chg & REG_SREG_HI) {
- Out->SRegHi = In->RegA;
+ switch (GetKnownReg (E->Chg & REG_ZP, 0)) {
+ case REG_TMP1:
+ Out->Tmp1 = In->RegA;
+ break;
+ case REG_PTR1_LO:
+ Out->Ptr1Lo = In->RegA;
+ break;
+ case REG_PTR1_HI:
+ Out->Ptr1Hi = In->RegA;
+ break;
+ case REG_SREG_LO:
+ Out->SRegLo = In->RegA;
+ break;
+ case REG_SREG_HI:
+ Out->SRegHi = In->RegA;
+ break;
}
} else if (E->AM == AM65_ZPX) {
/* Invalidates all ZP registers */
case OP65_STX:
if (E->AM == AM65_ZP) {
- if (E->Chg & REG_SREG_LO) {
- Out->SRegLo = In->RegX;
- } else if (E->Chg & REG_SREG_HI) {
- Out->SRegHi = In->RegX;
- }
+ switch (GetKnownReg (E->Chg & REG_ZP, 0)) {
+ case REG_TMP1:
+ Out->Tmp1 = In->RegX;
+ break;
+ case REG_PTR1_LO:
+ Out->Ptr1Lo = In->RegX;
+ break;
+ case REG_PTR1_HI:
+ Out->Ptr1Hi = In->RegX;
+ break;
+ case REG_SREG_LO:
+ Out->SRegLo = In->RegX;
+ break;
+ case REG_SREG_HI:
+ Out->SRegHi = In->RegX;
+ break;
+ }
} else if (E->AM == AM65_ZPX) {
/* Invalidates all ZP registers */
RC_InvalidateZP (Out);
case OP65_STY:
if (E->AM == AM65_ZP) {
- if (E->Chg & REG_SREG_LO) {
- Out->SRegLo = In->RegY;
- } else if (E->Chg & REG_SREG_HI) {
- Out->SRegHi = In->RegY;
- }
+ switch (GetKnownReg (E->Chg & REG_ZP, 0)) {
+ case REG_TMP1:
+ Out->Tmp1 = In->RegY;
+ break;
+ case REG_PTR1_LO:
+ Out->Ptr1Lo = In->RegY;
+ break;
+ case REG_PTR1_HI:
+ Out->Ptr1Hi = In->RegY;
+ break;
+ case REG_SREG_LO:
+ Out->SRegLo = In->RegY;
+ break;
+ case REG_SREG_HI:
+ Out->SRegHi = In->RegY;
+ break;
+ }
} else if (E->AM == AM65_ZPX) {
/* Invalidates all ZP registers */
RC_InvalidateZP (Out);
case OP65_STZ:
if (E->AM == AM65_ZP) {
- if (E->Chg & REG_SREG_LO) {
- Out->SRegLo = 0;
- } else if (E->Chg & REG_SREG_HI) {
- Out->SRegHi = 0;
- }
+ switch (GetKnownReg (E->Chg & REG_ZP, 0)) {
+ case REG_TMP1:
+ Out->Tmp1 = 0;
+ break;
+ case REG_PTR1_LO:
+ Out->Ptr1Lo = 0;
+ break;
+ case REG_PTR1_HI:
+ Out->Ptr1Hi = 0;
+ break;
+ case REG_SREG_LO:
+ Out->SRegLo = 0;
+ break;
+ case REG_SREG_HI:
+ Out->SRegHi = 0;
+ break;
+ }
} else if (E->AM == AM65_ZPX) {
/* Invalidates all ZP registers */
RC_InvalidateZP (Out);
break;
case OP65_TRB:
- /* For now... */
- Out->RegA = -1;
+ if (E->AM == AM65_ZPX) {
+ /* Invalidates all ZP registers */
+ RC_InvalidateZP (Out);
+ } else if (E->AM == AM65_ZP) {
+ if (RegValIsKnown (In->RegA)) {
+ switch (GetKnownReg (E->Chg & REG_ZP, In)) {
+ case REG_TMP1:
+ Out->Tmp1 &= ~In->RegA;
+ break;
+ case REG_PTR1_LO:
+ Out->Ptr1Lo &= ~In->RegA;
+ break;
+ case REG_PTR1_HI:
+ Out->Ptr1Hi &= ~In->RegA;
+ break;
+ case REG_SREG_LO:
+ Out->SRegLo &= ~In->RegA;
+ break;
+ case REG_SREG_HI:
+ Out->SRegHi &= ~In->RegA;
+ break;
+ }
+ } else {
+ switch (GetKnownReg (E->Chg & REG_ZP, In)) {
+ case REG_TMP1:
+ Out->Tmp1 = UNKNOWN_REGVAL;
+ break;
+ case REG_PTR1_LO:
+ Out->Ptr1Lo = UNKNOWN_REGVAL;
+ break;
+ case REG_PTR1_HI:
+ Out->Ptr1Hi = UNKNOWN_REGVAL;
+ break;
+ case REG_SREG_LO:
+ Out->SRegLo = UNKNOWN_REGVAL;
+ break;
+ case REG_SREG_HI:
+ Out->SRegHi = UNKNOWN_REGVAL;
+ break;
+ }
+ }
+ }
break;
case OP65_TSB:
- /* For now... */
- Out->RegA = -1;
+ if (E->AM == AM65_ZPX) {
+ /* Invalidates all ZP registers */
+ RC_InvalidateZP (Out);
+ } else if (E->AM == AM65_ZP) {
+ if (RegValIsKnown (In->RegA)) {
+ switch (GetKnownReg (E->Chg & REG_ZP, In)) {
+ case REG_TMP1:
+ Out->Tmp1 |= In->RegA;
+ break;
+ case REG_PTR1_LO:
+ Out->Ptr1Lo |= In->RegA;
+ break;
+ case REG_PTR1_HI:
+ Out->Ptr1Hi |= In->RegA;
+ break;
+ case REG_SREG_LO:
+ Out->SRegLo |= In->RegA;
+ break;
+ case REG_SREG_HI:
+ Out->SRegHi |= In->RegA;
+ break;
+ }
+ } else {
+ switch (GetKnownReg (E->Chg & REG_ZP, In)) {
+ case REG_TMP1:
+ Out->Tmp1 = UNKNOWN_REGVAL;
+ break;
+ case REG_PTR1_LO:
+ Out->Ptr1Lo = UNKNOWN_REGVAL;
+ break;
+ case REG_PTR1_HI:
+ Out->Ptr1Hi = UNKNOWN_REGVAL;
+ break;
+ case REG_SREG_LO:
+ Out->SRegLo = UNKNOWN_REGVAL;
+ break;
+ case REG_SREG_HI:
+ Out->SRegHi = UNKNOWN_REGVAL;
+ break;
+ }
+ }
+ }
break;
case OP65_TSX:
- Out->RegX = -1;
+ Out->RegX = UNKNOWN_REGVAL;
break;
case OP65_TXA:
strcat (Buf, U & REG_PTR1? "1" : "_");
strcat (Buf, U & REG_PTR2? "2" : "_");
strcat (Buf, U & REG_SAVE? "V" : "_");
+ strcat (Buf, U & REG_SP? "S" : "_");
return Buf;
}
char Use [128];
char Chg [128];
fprintf (F,
- "%*s; USE: %-20s CHG: %-20s SIZE: %u\n",
+ "%*s; USE: %-12s CHG: %-12s SIZE: %u\n",
30-Chars, "",
RegInfoDesc (E->Use, Use),
RegInfoDesc (E->Chg, Chg),
projects / cc65 / blobdiff