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Fixed a problem with local variables (stack offset for RHS was not corrected).

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git-svn-id: svn://svn.cc65.org/cc65/trunk@4070 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
uz 2009-08-29 11:31:06 +00:00
parent 53372ae1c1
commit c741f06ac1
1 changed files with 30 additions and 20 deletions
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50
src/cc65/coptstop.c
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@ -307,37 +307,47 @@ static void AdjustStackOffset (StackOpData* D, unsigned Offs)
CodeEntry* P = CS_GetPrevEntry (D->Code, I);
if (P && P->OPC == OP65_LDY && CE_IsConstImm (P)) {
/* The Y load is just before the stack access, adjust it */
CE_SetNumArg (P, P->Num - Offs);
/* The Y load is just before the stack access, adjust it */
CE_SetNumArg (P, P->Num - Offs);
} else {
} else {
/* Insert a new load instruction before the stack access */
const char* Arg = MakeHexArg (E->RI->In.RegY - Offs);
CodeEntry* X = NewCodeEntry (OP65_LDY, AM65_IMM, Arg, 0, E->LI);
CS_InsertEntry (D->Code, X, I++);
/* Insert a new load instruction before the stack access */
const char* Arg = MakeHexArg (E->RI->In.RegY - Offs);
CodeEntry* X = NewCodeEntry (OP65_LDY, AM65_IMM, Arg, 0, E->LI);
CS_InsertEntry (D->Code, X, I++);
/* One more inserted entries */
++D->OpIndex;
/* One more inserted entries */
++D->OpIndex;
}
}
/* If we need the value of Y later, be sure to reload it */
if (RegYUsed (D->Code, I+1)) {
const char* Arg = MakeHexArg (E->RI->In.RegY);
CodeEntry* X = NewCodeEntry (OP65_LDY, AM65_IMM, Arg, 0, E->LI);
CS_InsertEntry (D->Code, X, I+1);
const char* Arg = MakeHexArg (E->RI->In.RegY);
CodeEntry* X = NewCodeEntry (OP65_LDY, AM65_IMM, Arg, 0, E->LI);
CS_InsertEntry (D->Code, X, I+1);
/* One more inserted entries */
++D->OpIndex;
/* One more inserted entries */
++D->OpIndex;
/* Skip this instruction in the next round */
++I;
/* Skip this instruction in the next round */
++I;
}
}
}
/* Next entry */
++I;
/* Next entry */
++I;
}
/* If we have rhs load insns that load from stack, we'll have to adjust
* the offsets for these also.
*/
if (D->Rhs.A.Flags & LI_RELOAD_Y) {
D->Rhs.A.Offs -= Offs;
}
if (D->Rhs.X.Flags & LI_RELOAD_Y) {
D->Rhs.X.Offs -= Offs;
}
}