updateCFA();
break;
case HX_IDX:
- emitcode ("pulx", "");
+ emitcode ("pulh", "");
_G.stackPushes--;
updateCFA();
- emitcode ("pulh", "");
+ emitcode ("pulx", "");
_G.stackPushes--;
updateCFA();
break;
case XA_IDX:
- emitcode ("pula", "");
+ emitcode ("pulx", "");
_G.stackPushes--;
updateCFA();
- emitcode ("pulx", "");
+ emitcode ("pula", "");
_G.stackPushes--;
updateCFA();
break;
}
forceload:
-
+
switch (regidx)
{
case A_IDX:
}
break;
case H_IDX:
+ {
+ char * l = aopAdrStr (aop, loffset, FALSE);
+ if (!strcmp (l, zero))
+ {
+ emitcode ("clrh", "");
+ break;
+ }
+ }
if (hc08_reg_a->isFree)
{
loadRegFromAop (hc08_reg_a, aop, loffset);
/*--------------------------------------------------------------------------*/
/* transferAopAop - Transfer the value at logical offset srcofs of asmop */
-/* srcaop to logical offset dstofs of asmop dstofs. */
+/* srcaop to logical offset dstofs of asmop dstaop. */
/*--------------------------------------------------------------------------*/
static void
transferAopAop (asmop *srcaop, int srcofs, asmop *dstaop, int dstofs)
break;
case AOP_EXT:
needpula = pushRegIfUsed (hc08_reg_a);
- loadRegFromAop (hc08_reg_a, aop, loffset);
+ loadRegFromAop (hc08_reg_a, aop, loffset);
rmwWithReg (rmwop, hc08_reg_a);
if (strcmp ("tst", rmwop))
- storeRegToAop (hc08_reg_a, aop, loffset);
+ storeRegToAop (hc08_reg_a, aop, loffset);
pullOrFreeReg (hc08_reg_a, needpula);
break;
case AOP_DUMMY:
return size;
}
-/*-----------------------------------------------------------------*/
-/* outAcc - output Acc */
-/*-----------------------------------------------------------------*/
-static void
-outAcc (operand * result)
-{
- int size, offset;
- size = getDataSize (result);
- if (size)
- {
- storeRegToAop (hc08_reg_a, AOP (result), 0);
- size--;
- offset = 1;
- /* unsigned or positive */
- while (size--)
- {
- storeConstToAop (zero, AOP (result), offset++);
- }
- }
-}
-
-/*-----------------------------------------------------------------*/
-/* outBitC - output a bit C */
-/*-----------------------------------------------------------------*/
-static void
-outBitC (operand * result)
-{
-
-#if 0
- /* if the result is bit */
- if (AOP_TYPE (result) == AOP_CRY)
- aopPut (AOP (result), "c", 0);
- else
-#endif
- {
- emitcode ("clra", "");
- emitcode ("rola", "");
- outAcc (result);
- }
-}
-
-/*-----------------------------------------------------------------*/
-/* outBitNV - output a bit N^V */
-/*-----------------------------------------------------------------*/
-static void
-outBitNV (operand * result)
-{
- symbol *tlbl, *tlbl1;
-
- tlbl = newiTempLabel (NULL);
- tlbl1 = newiTempLabel (NULL);
-
- emitBranch ("blt", tlbl);
- loadRegFromConst (hc08_reg_a, zero);
- emitBranch ("bra", tlbl1);
- emitLabel (tlbl);
- loadRegFromConst (hc08_reg_a, one);
- emitLabel (tlbl1);
- outAcc (result);
-}
-
/*-----------------------------------------------------------------*/
/* asmopToBool - Emit code to convert an asmop to a boolean. */
iCode *sic;
for (sic = setFirstItem (sendSet); sic;
- sic = setNextItem (sendSet)) {
+ sic = setNextItem (sendSet)) {
int size, offset = 0;
aopOp (IC_LEFT (sic), sic, FALSE);
size = AOP_SIZE (IC_LEFT (sic));
D(emitcode("; genCall",""));
dtype = operandType (IC_LEFT (ic));
- /* if send set is not empty the assign */
+ /* if send set is not empty then assign */
if (_G.sendSet)
{
if (IFFUNC_ISREENT(dtype)) { /* need to reverse the send set */
static void
genFunction (iCode * ic)
{
- symbol *sym;
+ symbol *sym = OP_SYMBOL (IC_LEFT (ic));
sym_link *ftype;
- int calleesaves_saved_register = -1;
+ iCode *ric = (ic->next && ic->next->op == RECEIVE) ? ic->next : NULL;
+ int stackAdjust = sym->stack;
+ int accIsFree = sym->recvSize == 0;
_G.nRegsSaved = 0;
_G.stackPushes = 0;
/* create the function header */
emitcode (";", "-----------------------------------------");
- emitcode (";", " function %s", (sym = OP_SYMBOL (IC_LEFT (ic)))->name);
+ emitcode (";", " function %s", sym->name);
emitcode (";", "-----------------------------------------");
emitcode ("", "%s:", sym->rname);
return;
}
-
-
/* if this is an interrupt service routine then
save h */
if (IFFUNC_ISISR (sym->type))
if (!inExcludeList ("h"))
pushReg (hc08_reg_h, FALSE);
}
- else
+
+ /* For some cases it is worthwhile to perform a RECEIVE iCode */
+ /* before setting up the stack frame completely. */
+ while (ric && ric->next && ric->next->op == RECEIVE)
+ ric = ric->next;
+ while (ric && IC_RESULT (ric))
{
- /* if callee-save to be used for this function
- then save the registers being used in this function */
- if (IFFUNC_CALLEESAVES(sym->type))
- {
- int i;
+ symbol * rsym = OP_SYMBOL (IC_RESULT (ric));
+ int rsymSize = rsym ? getSize(rsym->type) : 0;
- /* if any registers used */
- if (sym->regsUsed)
- {
- /* save the registers used */
- for (i = 0; i < sym->regsUsed->size; i++)
- {
- if (bitVectBitValue (sym->regsUsed, i))
- {
- /* remember one saved register for later usage */
- if (calleesaves_saved_register < 0)
- calleesaves_saved_register = i;
- pushReg (hc08_regWithIdx (i), FALSE);
- _G.nRegsSaved++;
- }
- }
- }
- }
- }
+ if (rsym->isitmp)
+ {
+ if (rsym && rsym->regType == REG_CND)
+ rsym = NULL;
+ if (rsym && (rsym->accuse || rsym->ruonly))
+ rsym = NULL;
+ if (rsym && (rsym->isspilt || rsym->nRegs == 0) && rsym->usl.spillLoc)
+ rsym = rsym->usl.spillLoc;
+ }
- if (IFFUNC_ISREENT (sym->type) || options.stackAuto)
- {
+ /* If the RECEIVE operand immediately spills to the first entry on the */
+ /* stack, we can push it directly rather than use an sp relative store. */
+ if (rsym && rsym->onStack && rsym->stack == -_G.stackPushes-rsymSize)
+ {
+ int ofs;
+ _G.current_iCode = ric;
+ D(emitcode ("; genReceive",""));
+ for (ofs=0; ofs < rsymSize; ofs++)
+ {
+ regs * reg = hc08_aop_pass[ofs+(ric->argreg-1)]->aopu.aop_reg[0];
+ pushReg (reg, TRUE);
+ if (reg->rIdx == A_IDX)
+ accIsFree = 1;
+ stackAdjust--;
+ }
+ _G.current_iCode = ic;
+ ric->generated = 1;
+ }
+ ric = (ric->prev && ric->prev->op == RECEIVE) ? ric->prev : NULL;
}
/* adjust the stack for the function */
- if (sym->stack)
+ if (stackAdjust)
{
-
- int i = sym->stack;
-// if (i > 256)
-// werror (W_STACK_OVERFLOW, sym->name);
-
- adjustStack (-i);
+ adjustStack (-stackAdjust);
}
_G.stackOfs = sym->stack;
_G.stackPushes = 0;
/* if critical function then turn interrupts off */
if (IFFUNC_ISCRITICAL (ftype))
{
- if (IFFUNC_ARGS (ftype))
+ if (!accIsFree)
{
/* Function was passed parameters, so make sure A is preserved */
pushReg (hc08_reg_a, FALSE);
bool needpulh;
bool needpula;
unsigned int size = getDataSize (IC_RESULT (ic));
- int offset;
+ unsigned int offset;
symbol *tlbl = NULL;
left = IC_LEFT (ic);
ic->generated = 1;
}
+
/*-----------------------------------------------------------------*/
-/* genCmp :- greater or less than comparison */
+/* exchangedCmp : returns the opcode need if the two operands are */
+/* exchanged in a comparison */
/*-----------------------------------------------------------------*/
-static void
-genCmp (operand * left, operand * right,
- operand * result, iCode * ifx, int sign, iCode *ic)
-{
- int size, offset = 0;
- unsigned long lit = 0L;
- char *sub;
- bool needpula = FALSE;
-
- D(emitcode ("; genCmp",""));
-
- /* subtract right from left if at the
- end the carry flag is set then we know that
- left is greater than right */
- size = max (AOP_SIZE (left), AOP_SIZE (right));
-
- if (AOP_TYPE (right) == AOP_LIT)
- {
- lit = (unsigned long) floatFromVal (AOP (right)->aopu.aop_lit);
- /* optimize if(x < 0) or if(x >= 0) */
- if (lit == 0L)
- {
- if (!sign)
- {
- CLRC;
- }
- else
- {
- loadRegFromAop (hc08_reg_a, AOP (left), AOP_SIZE (left) -1);
- emitcode ("rola", "");
- hc08_useReg (hc08_reg_a);
- }
- sign = 0;
- goto release;
- }
+static int
+exchangedCmp (int opcode)
+{
+ switch (opcode)
+ {
+ case '<':
+ return '>';
+ case '>':
+ return '<';
+ case LE_OP:
+ return GE_OP;
+ case GE_OP:
+ return LE_OP;
+ case NE_OP:
+ return NE_OP;
+ case EQ_OP:
+ return EQ_OP;
+ default:
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "opcode not a comparison");
}
+ return EQ_OP; /* shouldn't happen, but need to return something */
+}
- if ((size==2)
- && ((AOP_TYPE (right) == AOP_LIT) ||
- ((AOP_TYPE (right) == AOP_DIR) && (AOP_SIZE (right) == 2)) )
- && hc08_reg_hx->isFree)
- {
- loadRegFromAop (hc08_reg_hx, AOP (left), 0);
- emitcode ("cphx","%s", aopAdrStr (AOP (right), 1, TRUE));
- hc08_freeReg (hc08_reg_hx);
- goto release;
+/*------------------------------------------------------------------*/
+/* negatedCmp : returns the equivalent opcode for when a comparison */
+/* if not true */
+/*------------------------------------------------------------------*/
+static int
+negatedCmp (int opcode)
+{
+ switch (opcode)
+ {
+ case '<':
+ return GE_OP;
+ case '>':
+ return LE_OP;
+ case LE_OP:
+ return '>';
+ case GE_OP:
+ return '<';
+ case NE_OP:
+ return EQ_OP;
+ case EQ_OP:
+ return NE_OP;
+ default:
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "opcode not a comparison");
}
+ return EQ_OP; /* shouldn't happen, but need to return something */
+}
- offset = 0;
- if (size==1)
- sub="cmp";
- else
- sub="sub";
- while (size--)
- {
- loadRegFromAop (hc08_reg_a, AOP (left), offset);
- accopWithAop (sub, AOP (right), offset);
- hc08_freeReg (hc08_reg_a);
- offset++;
- sub="sbc";
+/* compile only if the debugging macro D is enabled */
+#if (D(1) -0)
+static char *
+nameCmp (int opcode)
+{
+ switch (opcode)
+ {
+ case '<':
+ return "<";
+ case '>':
+ return ">";
+ case LE_OP:
+ return "<=";
+ case GE_OP:
+ return ">=";
+ case NE_OP:
+ return "!=";
+ case EQ_OP:
+ return "==";
+ default:
+ return "invalid";
}
+}
+#endif
-release:
- freeAsmop (right, NULL, ic, TRUE);
- freeAsmop (left, NULL, ic, TRUE);
- if (AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result))
- {
- outBitC (result);
- }
- else
+/*------------------------------------------------------------------*/
+/* branchInstCmp : returns the conditional branch instruction that */
+/* will branch if the comparison is true */
+/*------------------------------------------------------------------*/
+static char *
+branchInstCmp (int opcode, int sign)
+{
+ switch (opcode)
{
- /* if the result is used in the next
- ifx conditional branch then generate
- code a little differently */
- if (ifx)
- {
- pullOrFreeReg(hc08_reg_a,needpula);
- genIfxJump (ifx, sign ? "s" : "c");
- }
+ case '<':
+ if (sign)
+ return "blt";
+ else
+ return "bcs"; /* same as blo */
+ case '>':
+ if (sign)
+ return "bgt";
+ else
+ return "bhi";
+ case LE_OP:
+ if (sign)
+ return "ble";
+ else
+ return "bls";
+ case GE_OP:
+ if (sign)
+ return "bge";
else
- if (!sign)
- outBitC (result);
- else
- outBitNV (result);
- pullOrFreeReg(hc08_reg_a,needpula);
+ return "bcc"; /* same as bhs */
+ case NE_OP:
+ return "bne";
+ case EQ_OP:
+ return "beq";
+ default:
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "opcode not a comparison");
}
+ return "brn";
}
-/*-----------------------------------------------------------------*/
-/* genCmpGt :- greater than comparison */
-/*-----------------------------------------------------------------*/
+
+/*------------------------------------------------------------------*/
+/* genCmp :- greater or less than (and maybe with equal) comparison */
+/*------------------------------------------------------------------*/
static void
-genCmpGt (iCode * ic, iCode * ifx)
-{
+genCmp (iCode * ic, iCode * ifx)
+{
operand *left, *right, *result;
sym_link *letype, *retype;
- int sign;
+ int sign, opcode;
+ int size, offset = 0;
+ unsigned long lit = 0L;
+ char *sub;
+ symbol *jlbl = NULL;
+
+ opcode = ic->op;
- D(emitcode ("; genCmpGt",""));
+ D(emitcode ("; genCmp", "(%s)",nameCmp (opcode)));
result = IC_RESULT (ic);
left = IC_LEFT (ic);
aopOp (right, ic, FALSE);
aopOp (result, ic, TRUE);
- genCmp (right, left, result, ifx, sign,ic);
+ /* need register operand on left, prefer literal operand on right */
+ if ((AOP_TYPE (right) == AOP_REG) || AOP_TYPE (left) == AOP_LIT)
+ {
+ operand *temp = left;
+ left = right;
+ right = temp;
+ opcode = exchangedCmp (opcode);
+ }
- freeAsmop (result, NULL, ic, TRUE);
+ if (ifx)
+ {
+ if (IC_TRUE (ifx))
+ {
+ jlbl = IC_TRUE (ifx);
+ opcode = negatedCmp (opcode);
+ }
+ else
+ {
+ /* false label is present */
+ jlbl = IC_FALSE (ifx);
+ }
+ }
+
+ size = max (AOP_SIZE (left), AOP_SIZE (right));
+
+ if ((size == 2)
+ && ((AOP_TYPE (left) == AOP_DIR) && (AOP_SIZE (left) == 2))
+ && ((AOP_TYPE (right) == AOP_LIT) ||
+ ((AOP_TYPE (right) == AOP_DIR) && (AOP_SIZE (right) == 2)) )
+ && hc08_reg_hx->isFree)
+ {
+ loadRegFromAop (hc08_reg_hx, AOP (left), 0);
+ emitcode ("cphx","%s", aopAdrStr (AOP (right), 1, TRUE));
+ hc08_freeReg (hc08_reg_hx);
+ }
+ else
+ {
+ offset = 0;
+ if (size == 1)
+ sub = "cmp";
+ else
+ {
+ sub = "sub";
+
+ /* These conditions depend on the Z flag bit, but Z is */
+ /* only valid for the last byte of the comparison, not */
+ /* the whole value. So exchange the operands to get a */
+ /* comparison that doesn't depend on Z. (This is safe */
+ /* to do here since ralloc won't assign multi-byte */
+ /* operands to registers for comparisons) */
+ if ((opcode == '>') || (opcode == LE_OP))
+ {
+ operand *temp = left;
+ left = right;
+ right = temp;
+ opcode = exchangedCmp (opcode);
+ }
+
+ if ((AOP_TYPE (right) == AOP_LIT) && !isOperandVolatile (left, FALSE))
+ {
+ lit = (unsigned long) floatFromVal (AOP (right)->aopu.aop_lit);
+ while ((size > 1) && (((lit >> (8*offset)) & 0xff) == 0))
+ {
+ offset++;
+ size--;
+ }
+ }
+ }
+ while (size--)
+ {
+ loadRegFromAop (hc08_reg_a, AOP (left), offset);
+ accopWithAop (sub, AOP (right), offset);
+ hc08_freeReg (hc08_reg_a);
+ offset++;
+ sub = "sbc";
+ }
+ }
+ freeAsmop (right, NULL, ic, FALSE);
+ freeAsmop (left, NULL, ic, FALSE);
+
+ if (ifx)
+ {
+ symbol *tlbl = newiTempLabel (NULL);
+ char *inst;
+
+ freeAsmop (result, NULL, ic, TRUE);
+
+ inst = branchInstCmp (opcode, sign);
+ emitBranch (inst, tlbl);
+ emitBranch ("jmp", jlbl);
+ emitLabel (tlbl);
+
+ /* mark the icode as generated */
+ ifx->generated = 1;
+ }
+ else
+ {
+ symbol *tlbl1 = newiTempLabel (NULL);
+ symbol *tlbl2 = newiTempLabel (NULL);
+
+ emitBranch (branchInstCmp (opcode, sign), tlbl1);
+ loadRegFromConst (hc08_reg_a, zero);
+ emitBranch ("bra", tlbl2);
+ emitLabel (tlbl1);
+ loadRegFromConst (hc08_reg_a, one);
+ emitLabel (tlbl2);
+ storeRegToFullAop (hc08_reg_a, AOP(result), FALSE);
+ freeAsmop (result, NULL, ic, TRUE);
+ }
+
}
/*-----------------------------------------------------------------*/
-/* genCmpLt - less than comparisons */
+/* genCmpEQorNE - equal or not equal comparison */
/*-----------------------------------------------------------------*/
static void
-genCmpLt (iCode * ic, iCode * ifx)
-{
+genCmpEQorNE (iCode * ic, iCode * ifx)
+{
operand *left, *right, *result;
sym_link *letype, *retype;
- int sign;
+ int sign, opcode;
+ int size, offset = 0;
+ char *sub;
+ symbol *jlbl = NULL;
+ symbol *tlbl_NE = NULL;
+ symbol *tlbl_EQ = NULL;
+
+ opcode = ic->op;
- D(emitcode ("; genCmpLt",""));
+ D(emitcode ("; genCmpEQorNE", "(%s)",nameCmp (opcode)));
result = IC_RESULT (ic);
left = IC_LEFT (ic);
letype = getSpec (operandType (left));
retype = getSpec (operandType (right));
sign = !(SPEC_USIGN (letype) | SPEC_USIGN (retype));
-
/* assign the amsops */
aopOp (left, ic, FALSE);
aopOp (right, ic, FALSE);
aopOp (result, ic, TRUE);
-
- genCmp (left, right, result, ifx, sign,ic);
-
- freeAsmop (result, NULL, ic, TRUE);
-}
-
-/*-----------------------------------------------------------------*/
-/* - compare and branch if not equal */
-/*-----------------------------------------------------------------*/
-static void
-gencbneshort (operand * left, operand * right, symbol * lbl)
-{
- int size = max (AOP_SIZE (left), AOP_SIZE (right));
- int offset = 0;
- unsigned long lit = 0L;
-
- /* if the left side is a literal or
- if the right is in a pointer register and left
- is not */
- if (AOP_TYPE (left) == AOP_LIT)
+
+ /* need register operand on left, prefer literal operand on right */
+ if ((AOP_TYPE (right) == AOP_REG) || AOP_TYPE (left) == AOP_LIT)
{
- operand *t = right;
- right = left;
- left = t;
+ operand *temp = left;
+ left = right;
+ right = temp;
+ opcode = exchangedCmp (opcode);
}
- if (AOP_TYPE (right) == AOP_LIT)
- lit = (unsigned long) floatFromVal (AOP (right)->aopu.aop_lit);
- while (size--)
+ if (ifx)
{
- loadRegFromAop (hc08_reg_a, AOP (left), offset);
- accopWithAop ("cmp", AOP (right), offset);
- hc08_useReg (hc08_reg_a);
- hc08_freeReg (hc08_reg_a);
- emitBranch ("bne", lbl);
- offset++;
+ if (IC_TRUE (ifx))
+ {
+ jlbl = IC_TRUE (ifx);
+ opcode = negatedCmp (opcode);
+ }
+ else
+ {
+ /* false label is present */
+ jlbl = IC_FALSE (ifx);
+ }
}
-
-}
-
-/*-----------------------------------------------------------------*/
-/* gencjne - compare and jump if not equal */
-/*-----------------------------------------------------------------*/
-static void
-gencjne (operand * left, operand * right, symbol * lbl)
-{
- symbol *tlbl = newiTempLabel (NULL);
-
- gencbneshort (left, right, lbl);
-
- loadRegFromConst (hc08_reg_a, one);
- emitBranch ("bra", tlbl);
- emitLabel (lbl);
- loadRegFromConst (hc08_reg_a, zero);
- emitLabel (tlbl);
-
- hc08_useReg(hc08_reg_a);
- hc08_freeReg(hc08_reg_a);
-}
-
-/*-----------------------------------------------------------------*/
-/* genCmpEq - generates code for equal to */
-/*-----------------------------------------------------------------*/
-static void
-genCmpEq (iCode * ic, iCode * ifx)
-{
- operand *left, *right, *result;
-
- D(emitcode ("; genCmpEq",""));
-
- aopOp ((left = IC_LEFT (ic)), ic, FALSE);
- aopOp ((right = IC_RIGHT (ic)), ic, FALSE);
- aopOp ((result = IC_RESULT (ic)), ic, TRUE);
-
- /* if literal, literal on the right or
- if the right is in a pointer register and left
- is not */
- if (AOP_TYPE (IC_LEFT (ic)) == AOP_LIT)
+
+ size = max (AOP_SIZE (left), AOP_SIZE (right));
+
+ if ((size == 2)
+ && ((AOP_TYPE (left) == AOP_DIR) && (AOP_SIZE (left) == 2))
+ && ((AOP_TYPE (right) == AOP_LIT) ||
+ ((AOP_TYPE (right) == AOP_DIR) && (AOP_SIZE (right) == 2)) )
+ && hc08_reg_hx->isFree)
{
- operand *t = IC_RIGHT (ic);
- IC_RIGHT (ic) = IC_LEFT (ic);
- IC_LEFT (ic) = t;
+ loadRegFromAop (hc08_reg_hx, AOP (left), 0);
+ emitcode ("cphx","%s", aopAdrStr (AOP (right), 1, TRUE));
+ hc08_freeReg (hc08_reg_hx);
}
+ else
+ {
+ offset = 0;
+ sub = "cmp";
+ while (size--)
+ {
+ loadRegFromAop (hc08_reg_a, AOP (left), offset);
+ accopWithAop (sub, AOP (right), offset);
+ if (size)
+ {
+ if (!tlbl_NE)
+ tlbl_NE = newiTempLabel (NULL);
+ emitBranch ("bne", tlbl_NE);
+ }
+ hc08_freeReg (hc08_reg_a);
+ offset++;
+ }
+ }
+ freeAsmop (right, NULL, ic, FALSE);
+ freeAsmop (left, NULL, ic, FALSE);
- if (ifx && !AOP_SIZE (result))
+ if (ifx)
{
- symbol *tlbl;
- tlbl = newiTempLabel (NULL);
- gencbneshort (left, right, tlbl);
- if (IC_TRUE (ifx))
+ freeAsmop (result, NULL, ic, TRUE);
+
+ if (opcode == EQ_OP)
{
- emitBranch ("jmp", IC_TRUE (ifx));
- emitLabel (tlbl);
+ if (!tlbl_EQ)
+ tlbl_EQ = newiTempLabel (NULL);
+ emitBranch ("beq", tlbl_EQ);
+ if (tlbl_NE)
+ emitLabel (tlbl_NE);
+ emitBranch ("jmp", jlbl);
+ emitLabel (tlbl_EQ);
}
else
- {
- symbol *lbl = newiTempLabel (NULL);
- emitBranch ("bra", lbl);
- emitLabel (tlbl);
- emitBranch ("jmp", IC_FALSE (ifx));
- emitLabel (lbl);
- }
-
+ {
+ if (!tlbl_NE)
+ tlbl_NE = newiTempLabel (NULL);
+ emitBranch ("bne", tlbl_NE);
+ emitBranch ("jmp", jlbl);
+ emitLabel (tlbl_NE);
+ }
+
/* mark the icode as generated */
ifx->generated = 1;
- goto release;
}
-
- gencjne (left, right, newiTempLabel (NULL));
- if (AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result))
- {
- storeRegToAop (hc08_reg_a, AOP (result), 0);
- goto release;
- }
- if (ifx)
+ else
{
- genIfxJump (ifx, "a");
- goto release;
+ symbol *tlbl = newiTempLabel (NULL);
+
+ if (opcode == EQ_OP)
+ {
+ if (!tlbl_EQ)
+ tlbl_EQ = newiTempLabel (NULL);
+ emitBranch ("beq", tlbl_EQ);
+ if (tlbl_NE)
+ emitLabel (tlbl_NE);
+ loadRegFromConst (hc08_reg_a, zero);
+ emitBranch ("bra", tlbl);
+ emitLabel (tlbl_EQ);
+ loadRegFromConst (hc08_reg_a, one);
+ }
+ else
+ {
+ if (!tlbl_NE)
+ tlbl_NE = newiTempLabel (NULL);
+ emitBranch ("bne", tlbl_NE);
+ loadRegFromConst (hc08_reg_a, zero);
+ emitBranch ("bra", tlbl);
+ emitLabel (tlbl_NE);
+ loadRegFromConst (hc08_reg_a, one);
+ }
+
+ emitLabel (tlbl);
+ storeRegToFullAop (hc08_reg_a, AOP(result), FALSE);
+ freeAsmop (result, NULL, ic, TRUE);
}
- /* if the result is used in an arithmetic operation
- then put the result in place */
- if (AOP_TYPE (result) != AOP_CRY)
- outAcc (result);
-
-release:
- freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (result, NULL, ic, TRUE);
+
}
+
/*-----------------------------------------------------------------*/
/* ifxForOp - returns the icode containing the ifx for operand */
/*-----------------------------------------------------------------*/
{
iCode *lic = ic->next;
bool pset, pget;
- int offset, size;
+ int size;
symbol *sym;
asmop *derefaop;
loadRegFromAop (hc08_reg_hx, AOP (IC_RIGHT (ic)), 0);
size = AOP_SIZE (IC_RESULT(lic));
derefaop->size = size;
- offset=0;
while (size--)
{
emitcode ("lda", "%s,x",
- aopAdrStr (derefaop, offset, TRUE));
+ aopAdrStr (derefaop, size, TRUE));
hc08_useReg (hc08_reg_a);
- storeRegToAop (hc08_reg_a, AOP (IC_RESULT (lic)), offset++);
+ storeRegToAop (hc08_reg_a, AOP (IC_RESULT (lic)), size);
hc08_freeReg (hc08_reg_a);
}
loadRegFromAop (hc08_reg_hx, AOP (IC_RIGHT (ic)), 0);
size = AOP_SIZE (IC_RIGHT(lic));
derefaop->size = size;
- offset=0;
while (size--)
{
- loadRegFromAop (hc08_reg_a, AOP (IC_RIGHT (lic)), offset);
+ loadRegFromAop (hc08_reg_a, AOP (IC_RIGHT (lic)), size);
emitcode ("sta", "%s,x",
- aopAdrStr (derefaop, offset, TRUE));
+ aopAdrStr (derefaop, size, TRUE));
hc08_freeReg (hc08_reg_a);
- offset++;
}
lic->generated = 1;
return lic;
}
/* if the operand used or deffed */
- if (bitVectBitValue(OP_USES(op),lic->key) || (unsigned) lic->defKey == op->key) {
+ if (bitVectBitValue(OP_USES(op),lic->key) || lic->defKey == op->key) {
return NULL;
}
/* if GOTO or IFX */
if (*l=='#')
l++;
sym->isref = 1;
- if (!sym->allocreq && !sym->ismyparm)
+ if (sym->level && !sym->allocreq && !sym->ismyparm)
{
werror (E_ID_UNDEF, sym->name);
werror (W_CONTINUE,
switch (shCount)
{
case 4:
+ if (optimize.codeSpeed)
+ break;
accopWithMisc ("nsa", "");
accopWithMisc ("and", "#0xf0");
/* total: 5 cycles, 3 bytes */
return;
case 5:
+ if (optimize.codeSpeed)
+ break;
accopWithMisc ("nsa", "");
accopWithMisc ("and", "#0xf0");
accopWithMisc ("lsla", "");
switch (shCount)
{
case 4:
+ if (optimize.codeSpeed)
+ break;
accopWithMisc ("nsa", "");
accopWithMisc ("and", "#0x0f");
/* total: 5 cycles, 3 bytes */
return;
case 5:
+ if (optimize.codeSpeed)
+ break;
accopWithMisc ("nsa", "");
accopWithMisc ("and", "#0x0f");
accopWithMisc ("lsra", "");
loadRegFromAop (hc08_reg_a, AOP (left), MSB24);
rmwWithReg ("rol", hc08_reg_a);
storeRegToAop (hc08_reg_a, AOP (result), offr+2);
+ storeConstToAop (zero, AOP (result), 0);
}
pullOrFreeReg (hc08_reg_x, needpulx);
else
rmwWithReg ("lsr", hc08_reg_a);
storeRegToAop (hc08_reg_a, AOP (result), MSB24);
+ storeRegSignToUpperAop (hc08_reg_a, AOP (result), MSB32, sign);
}
loadRegFromAop (hc08_reg_xa, AOP (left), offl);
loadRegFromConst (hc08_reg_a, zero);
XAccRsh (shCount-8, sign);
accopWithAop ("ora", AOP (result), 1);
- storeRegToFullAop (hc08_reg_xa, AOP (result), 1);
+ storeRegToAop (hc08_reg_xa, AOP (result), 1);
+ storeRegSignToUpperAop (hc08_reg_x, AOP(result), 3, sign);
}
}
else
iCode * ic,
iCode * ifx)
{
- int size, offset = 0;
+ int size;
asmop *derefaop;
D(emitcode ("; genDataPointerGet",""));
while (size--)
{
if (!ifx)
- transferAopAop (derefaop, offset, AOP (result), offset);
+ transferAopAop (derefaop, size, AOP (result), size);
else
- loadRegFromAop (hc08_reg_a, derefaop, offset);
- offset++;
+ loadRegFromAop (hc08_reg_a, derefaop, size);
}
freeAsmop (NULL, derefaop, ic, TRUE);
operand * result,
iCode * ic)
{
- int size, offset = 0;
+ int size;
asmop *derefaop;
D(emitcode ("; genDataPointerSet",""));
while (size--)
{
- transferAopAop (AOP (right), offset, derefaop, offset);
- offset++;
+ transferAopAop (AOP (right), size, derefaop, size);
}
freeAsmop (right, NULL, ic, TRUE);
genAssign (iCode * ic)
{
operand *result, *right;
- int size, offset;
+ int size;
// unsigned long lit = 0L;
D(emitcode("; genAssign",""));
/* general case */
size = AOP_SIZE (result);
- offset = 0;
-
while (size--)
{
- transferAopAop (AOP (right), offset, AOP (result), offset);
- offset++;
+ transferAopAop (AOP (right), size, AOP (result), size);
}
release:
}
/*-----------------------------------------------------------------*/
-/* genJumpTab - genrates code for jump table */
+/* genJumpTab - generates code for jump table */
/*-----------------------------------------------------------------*/
static void
genJumpTab (iCode * ic)
{
symbol *jtab;
-// char *l;
-
+ symbol *jtablo = newiTempLabel (NULL);
+ symbol *jtabhi = newiTempLabel (NULL);
+
D(emitcode ("; genJumpTab",""));
aopOp (IC_JTCOND (ic), ic, FALSE);
- /* get the condition into accumulator */
- loadRegFromAop (hc08_reg_a, AOP (IC_JTCOND (ic)), 0);
- freeAsmop (IC_JTCOND (ic), NULL, ic, TRUE);
- /* multiply by three */
- pushReg (hc08_reg_a, FALSE);
- emitcode ("lsla", "");
- emitcode ("add","1,s");
- transferRegReg (hc08_reg_a, hc08_reg_x, TRUE);
- loadRegFromConst (hc08_reg_h, zero);
- pullReg (hc08_reg_a);
+
+ if (hc08_reg_x->isFree && hc08_reg_x->isFree)
+ {
+ /* get the condition into x */
+ loadRegFromAop (hc08_reg_x, AOP (IC_JTCOND (ic)), 0);
+ freeAsmop (IC_JTCOND (ic), NULL, ic, TRUE);
+ loadRegFromConst (hc08_reg_h, zero);
+
+ emitcode ("lda", "%05d$,x", jtabhi->key + 100);
+ emitcode ("ldx", "%05d$,x", jtablo->key + 100);
+ transferRegReg (hc08_reg_a, hc08_reg_h, TRUE);
+ emitcode ("jmp", ",x");
+
+ hc08_dirtyReg (hc08_reg_a, TRUE);
+ hc08_dirtyReg (hc08_reg_hx, TRUE);
+ }
+ else
+ {
+ adjustStack(-2);
+ pushReg(hc08_reg_hx, TRUE);
+
+ /* get the condition into x */
+ loadRegFromAop (hc08_reg_x, AOP (IC_JTCOND (ic)), 0);
+ freeAsmop (IC_JTCOND (ic), NULL, ic, TRUE);
+ loadRegFromConst (hc08_reg_h, zero);
+
+ emitcode ("lda", "%05d$,x", jtabhi->key + 100);
+ emitcode ("sta", "3,s");
+ emitcode ("lda", "%05d$,x", jtablo->key + 100);
+ emitcode ("sta", "4,s");
+
+ pullReg(hc08_reg_hx);
+ emitcode ("rts", "");
+ _G.stackPushes += 2;
+ updateCFA();
+ }
- jtab = newiTempLabel (NULL);
- emitcode ("jmp", "%05d$,x", jtab->key + 100);
- emitcode ("", "%05d$:", jtab->key + 100);
/* now generate the jump labels */
+ emitLabel (jtablo);
+ for (jtab = setFirstItem (IC_JTLABELS (ic)); jtab;
+ jtab = setNextItem (IC_JTLABELS (ic)))
+ emitcode (".db", "%05d$", jtab->key + 100);
+ emitLabel (jtabhi);
for (jtab = setFirstItem (IC_JTLABELS (ic)); jtab;
jtab = setNextItem (IC_JTLABELS (ic)))
- emitcode ("jmp", "%05d$", jtab->key + 100);
+ emitcode (".db", ">%05d$", jtab->key + 100);
- hc08_dirtyReg (hc08_reg_a, TRUE);
- hc08_dirtyReg (hc08_reg_hx, TRUE);
}
/*-----------------------------------------------------------------*/
break;
case '>':
- genCmpGt (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
case '<':
- genCmpLt (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
case LE_OP:
case GE_OP:
- case NE_OP:
-
- /* note these two are xlated by algebraic equivalence
- during parsing SDCC.y */
- werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
- "got '>=' or '<=' shouldn't have come here");
- break;
+ genCmp (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+ case NE_OP:
case EQ_OP:
- genCmpEq (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
+ genCmpEQorNE (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
case AND_OP:
genAndOp (ic);
projects / fw / sdcc / blobdiff