#include "common.h"
#include "newalloc.h"
+#include "math.h"
/*-----------------------------------------------------------------*/
/* global variables */
symbol *returnLabel; /* function return label */
symbol *entryLabel; /* function entry label */
-#if defined(__BORLANDC__) || defined(_MSC_VER)
-#define LONG_LONG __int64
-#else
-#define LONG_LONG long long
-#endif
-
/*-----------------------------------------------------------------*/
/* forward definition of some functions */
operand *geniCodeDivision (operand *, operand *);
operand *geniCodeRValue (operand *, bool);
operand *geniCodeDerefPtr (operand *,int);
int isLvaluereq(int lvl);
+void setOClass (sym_link * ptr, sym_link * spec);
#define PRINTFUNC(x) void x (FILE *of, iCode *ic, char *s)
/* forward definition of ic print functions */
PRINTFUNC (picJumpTable);
PRINTFUNC (picInline);
PRINTFUNC (picReceive);
+PRINTFUNC (picDummyRead);
iCodeTable codeTable[] =
{
{RECEIVE, "recv", picReceive, NULL},
{SEND, "send", picGenericOne, NULL},
{ARRAYINIT, "arrayInit", picGenericOne, NULL},
+ {DUMMY_READ_VOLATILE, "dummy = (volatile)", picDummyRead, NULL}
};
/*-----------------------------------------------------------------*/
/* checkConstantRange: check a constant against the type */
/*-----------------------------------------------------------------*/
+
/* pedantic=0: allmost anything is allowed as long as the absolute
value is within the bit range of the type, and -1 is treated as
0xf..f for unsigned types (e.g. in assign)
pedantic>1: "char c=200" is not allowed (evaluates to -56)
*/
-void checkConstantRange(sym_link *ltype, value *val, char *msg, int pedantic) {
- LONG_LONG max = (LONG_LONG) 1 << bitsForType(ltype);
- char message[132]="";
+void checkConstantRange(sym_link *ltype, value *val, char *msg,
+ int pedantic) {
+ double max;
int warnings=0;
int negative=0;
- long v=SPEC_CVAL(val->type).v_long;
+ long v;
+
+ max = pow ((double)2.0, (double)bitsForType(ltype));
+
+ if (SPEC_LONG(val->type)) {
+ if (SPEC_USIGN(val->type)) {
+ v=SPEC_CVAL(val->type).v_ulong;
+ } else {
+ v=SPEC_CVAL(val->type).v_long;
+ }
+ } else {
+ if (SPEC_USIGN(val->type)) {
+ v=SPEC_CVAL(val->type).v_uint;
+ } else {
+ v=SPEC_CVAL(val->type).v_int;
+ }
+ }
+
#if 0
// this could be a good idea
warnings++;
}
+#if 0 // temporary disabled, leaving the warning as a reminder
if (warnings) {
- sprintf (message, "for %s %s in %s",
+ SNPRINTF (message, sizeof(message), "for %s %s in %s",
SPEC_USIGN(ltype) ? "unsigned" : "signed",
nounName(ltype), msg);
werror (W_CONST_RANGE, message);
if (pedantic>1)
fatalError++;
}
+#endif
}
/*-----------------------------------------------------------------*/
if (SPEC_NOUN (opetype) == V_FLOAT)
fprintf (file, "%g {", SPEC_CVAL (opetype).v_float);
else
- fprintf (file, "0x%x {", (int) floatFromVal (op->operand.valOperand));
+ fprintf (file, "0x%x {", (unsigned) floatFromVal (op->operand.valOperand));
printTypeChain (operandType (op), file);
fprintf (file, "}");
break;
case SYMBOL:
#define REGA 1
#ifdef REGA
- fprintf (file, "%s [k%d lr%d:%d so:%d]{ ia%d re%d rm%d nos%d}", /*{ar%d rm%d ru%d p%d a%d u%d i%d au%d k%d ks%d}" , */
+ fprintf (file, "%s [k%d lr%d:%d so:%d]{ ia%d re%d rm%d nos%d ru%d dp%d}", /*{ar%d rm%d ru%d p%d a%d u%d i%d au%d k%d ks%d}" , */
(OP_SYMBOL (op)->rname[0] ? OP_SYMBOL (op)->rname : OP_SYMBOL (op)->name),
op->key,
OP_LIVEFROM (op), OP_LIVETO (op),
OP_SYMBOL (op)->stack,
- op->isaddr, OP_SYMBOL (op)->isreqv, OP_SYMBOL (op)->remat,OP_SYMBOL(op)->noSpilLoc
+ op->isaddr, OP_SYMBOL (op)->isreqv,
+ OP_SYMBOL (op)->remat,OP_SYMBOL(op)->noSpilLoc,
+ OP_SYMBOL(op)->ruonly,OP_SYMBOL(op)->dptr
);
{
fprintf (file, "{");
if (!IC_RESULT (ic) && !IC_LEFT (ic))
fprintf (of, s);
+ if (ic->op == SEND || ic->op == RECEIVE) {
+ fprintf(of,"{argreg = %d}",ic->argreg);
+ }
fprintf (of, "\n");
}
fprintf (of, "\n");
}
+PRINTFUNC (picDummyRead)
+{
+ fprintf (of, "\t");
+ fprintf (of, "%s ", s);
+ printOperand (IC_RIGHT (ic), of);
+ fprintf (of, "\n");
+}
+
/*-----------------------------------------------------------------*/
/* piCode - prints one iCode */
/*-----------------------------------------------------------------*/
-int
+int
piCode (void *item, FILE * of)
{
iCode *ic = item;
/*-----------------------------------------------------------------*/
/* printiCChain - prints intermediate code for humans */
/*-----------------------------------------------------------------*/
-void
+void
printiCChain (iCode * icChain, FILE * of)
{
iCode *loop;
{
if ((icTab = getTableEntry (loop->op)))
{
- fprintf (of, "%s(%d:%d:%d:%d:%d)\t",
+ fprintf (of, "%s(l%d:s%d:k%d:d%d:s%d)\t",
loop->filename, loop->lineno,
loop->seq, loop->key, loop->depth, loop->supportRtn);
{
iCode *ic;
- if (IS_VOID(OP_SYMBOL(condition)->type)) {
+ if (IS_VOID(operandType(condition))) {
werror(E_VOID_VALUE_USED);
}
ic = newiCode (op, NULL, NULL);
ic->op = op;
- ic->argLabel.label = label;
+ ic->label = label;
IC_LEFT (ic) = NULL;
IC_RIGHT (ic) = NULL;
IC_RESULT (ic) = NULL;
symbol *itmp;
if (s)
- sprintf (buffer, "%s", s);
+ {
+ SNPRINTF (buffer, sizeof(buffer), "%s", s);
+ }
else
- sprintf (buffer, "iTemp%d", iTempNum++);
+ {
+ SNPRINTF (buffer, sizeof(buffer), "iTemp%d", iTempNum++);
+ }
+
itmp = newSymbol (buffer, 1);
- strcpy (itmp->rname, itmp->name);
+ strncpyz (itmp->rname, itmp->name, SDCC_NAME_MAX);
itmp->isitmp = 1;
return itmp;
return itmplbl;
if (s)
- itmplbl = newSymbol (s, 1);
+ {
+ itmplbl = newSymbol (s, 1);
+ }
else
{
- sprintf (buffer, "iTempLbl%d", iTempLblNum++);
+ SNPRINTF (buffer, sizeof(buffer), "iTempLbl%d", iTempLblNum++);
itmplbl = newSymbol (buffer, 1);
}
{
symbol *itmplbl;
- sprintf (buffer, "preHeaderLbl%d", iTempLblNum++);
+ SNPRINTF (buffer, sizeof(buffer), "preHeaderLbl%d", iTempLblNum++);
itmplbl = newSymbol (buffer, 1);
itmplbl->isitmp = 1;
case PCALL:
IC_RESULT (nic) = operandFromOperand (IC_RESULT (ic));
IC_LEFT (nic) = operandFromOperand (IC_LEFT (ic));
- IC_ARGS (nic) = IC_ARGS (ic);
break;
case INLINEASM:
iCodeTable *
getTableEntry (int oper)
{
- int i;
+ unsigned i;
for (i = 0; i < (sizeof (codeTable) / sizeof (iCodeTable)); i++)
if (oper == codeTable[i].icode)
{
value *tval = args;
+ wassert (IS_SYMOP(op));
+
while (tval)
{
if (tval->sym &&
if (IS_ITEMP (op))
return 0;
- if (op->type == SYMBOL &&
+ if (IS_SYMOP(op) &&
(op->operand.symOperand->level == 0 ||
IS_STATIC (op->operand.symOperand->etype) ||
IS_EXTERN (op->operand.symOperand->etype))
return 0;
opetype = getSpec (optype = operandType (op));
-
- if (IS_PTR (optype) && DCL_PTR_VOLATILE (optype))
- return 1;
-
- if (IS_VOLATILE (opetype))
- return 1;
- return 0;
+
+ if (IS_PTR (optype) && DCL_PTR_VOLATILE (optype))
+ return 1;
+
+ if (IS_VOLATILE (opetype))
+ return 1;
+ return 0;
}
/*-----------------------------------------------------------------*/
return 0;
}
+
/*-----------------------------------------------------------------*/
/* isOperandInFarSpace - will return true if operand is in farSpace */
/*-----------------------------------------------------------------*/
return (IN_FARSPACE (SPEC_OCLS (etype)) ? TRUE : FALSE);
}
+/*------------------------------------------------------------------*/
+/* isOperandInDirSpace - will return true if operand is in dirSpace */
+/*------------------------------------------------------------------*/
+bool
+isOperandInDirSpace (operand * op)
+{
+ sym_link *etype;
+
+ if (!op)
+ return FALSE;
+
+ if (!IS_SYMOP (op))
+ return FALSE;
+
+ if (!IS_TRUE_SYMOP (op))
+ {
+ if (SPIL_LOC (op))
+ etype = SPIL_LOC (op)->etype;
+ else
+ return FALSE;
+ }
+ else
+ {
+ etype = getSpec (operandType (op));
+ }
+ return (IN_DIRSPACE (SPEC_OCLS (etype)) ? TRUE : FALSE);
+}
+
+/*--------------------------------------------------------------------*/
+/* isOperandInCodeSpace - will return true if operand is in codeSpace */
+/*--------------------------------------------------------------------*/
+bool
+isOperandInCodeSpace (operand * op)
+{
+ sym_link *etype;
+
+ if (!op)
+ return FALSE;
+
+ if (!IS_SYMOP (op))
+ return FALSE;
+
+ etype = getSpec (operandType (op));
+
+ if (!IS_TRUE_SYMOP (op))
+ {
+ if (SPIL_LOC (op))
+ etype = SPIL_LOC (op)->etype;
+ else
+ return FALSE;
+ }
+ else
+ {
+ etype = getSpec (operandType (op));
+ }
+ return (IN_CODESPACE (SPEC_OCLS (etype)) ? TRUE : FALSE);
+}
+
/*-----------------------------------------------------------------*/
/* isOperandOnStack - will return true if operand is on stack */
/*-----------------------------------------------------------------*/
return FALSE;
etype = getSpec (operandType (op));
+ if (IN_STACK (etype) ||
+ OP_SYMBOL(op)->onStack ||
+ (SPIL_LOC(op) && SPIL_LOC(op)->onStack))
+ return TRUE;
- return ((IN_STACK (etype)) ? TRUE : FALSE);
+ return FALSE;
}
/*-----------------------------------------------------------------*/
/* operandLitValue - literal value of an operand */
/*-----------------------------------------------------------------*/
-double
+double
operandLitValue (operand * op)
{
assert (isOperandLiteral (op));
}
/*-----------------------------------------------------------------*/
-/* operandOperation - perforoms operations on operands */
+/* getBuiltInParms - returns parameters to a builtin functions */
+/*-----------------------------------------------------------------*/
+iCode *getBuiltinParms (iCode *ic, int *pcount, operand **parms)
+{
+ sym_link *ftype;
+
+ *pcount = 0;
+ /* builtin functions uses only SEND for parameters */
+ while (ic->op != CALL) {
+ assert(ic->op == SEND && ic->builtinSEND);
+ ic->generated = 1; /* mark the icode as generated */
+ parms[*pcount] = IC_LEFT(ic);
+ ic = ic->next;
+ (*pcount)++;
+ }
+
+ ic->generated = 1;
+ /* make sure this is a builtin function call */
+ assert(IS_SYMOP(IC_LEFT(ic)));
+ ftype = operandType(IC_LEFT(ic));
+ assert(IFFUNC_ISBUILTIN(ftype));
+ return ic;
+}
+
+/*-----------------------------------------------------------------*/
+/* operandOperation - performs operations on operands */
/*-----------------------------------------------------------------*/
operand *
operandOperation (operand * left, operand * right,
{
sym_link *let , *ret=NULL;
operand *retval = (operand *) 0;
-
+
assert (isOperandLiteral (left));
let = getSpec(operandType(left));
if (right) {
assert (isOperandLiteral (right));
- ret = getSpec(operandType(left));
+ ret = getSpec(operandType(right));
}
switch (op)
operandLitValue (right)));
break;
case '*':
+ /*
retval = operandFromValue (valCastLiteral (type,
operandLitValue (left) *
operandLitValue (right)));
+ This could be all we've to do, but with gcc we've to take care about
+ overflows. Two examples:
+ ULONG_MAX * ULONG_MAX doesn't fit into a double, some of the least
+ significant bits are lost (52 in fraction, 63 bits would be
+ necessary to keep full precision).
+ If the resulting double value is greater than ULONG_MAX (resp.
+ USHRT_MAX, ...), then 0 will be assigned to v_ulong (resp. u_uint, ...)!
+ */
+
+ /* if it is not a specifier then we can assume that */
+ /* it will be an unsigned long */
+ if (IS_INT (type) ||
+ !IS_SPEC (type))
+ {
+ /* long is handled here, because it can overflow with double */
+ if (SPEC_LONG (type) ||
+ !IS_SPEC (type))
+ /* signed and unsigned mul are the same, as long as the precision
+ of the result isn't bigger than the precision of the operands. */
+ retval = operandFromValue (valCastLiteral (type,
+ (TYPE_UDWORD) operandLitValue (left) *
+ (TYPE_UDWORD) operandLitValue (right)));
+ else if (SPEC_USIGN (type)) /* unsigned int */
+ {
+ /* unsigned int is handled here in order to detect overflow */
+ TYPE_UDWORD ul = (TYPE_UWORD) operandLitValue (left) *
+ (TYPE_UWORD) operandLitValue (right);
+
+ retval = operandFromValue (valCastLiteral (type, (TYPE_UWORD) ul));
+ if (!options.lessPedantic &&
+ ul != (TYPE_UWORD) ul)
+ werror (W_INT_OVL);
+ }
+ else /* signed int */
+ {
+ /* signed int is handled here in order to detect overflow */
+ TYPE_DWORD l = (TYPE_WORD) operandLitValue (left) *
+ (TYPE_WORD) operandLitValue (right);
+
+ retval = operandFromValue (valCastLiteral (type, (TYPE_WORD) l));
+ if (!options.lessPedantic &&
+ l != (TYPE_WORD) l)
+ werror (W_INT_OVL);
+ }
+ }
+ else
+ /* all others go here: */
+ retval = operandFromValue (valCastLiteral (type,
+ operandLitValue (left) *
+ operandLitValue (right)));
break;
case '/':
- if ((unsigned long) operandLitValue (right) == 0)
+ if ((TYPE_UDWORD) operandLitValue (right) == 0)
{
werror (E_DIVIDE_BY_ZERO);
retval = right;
operandLitValue (right)));
break;
case '%':
- if ((unsigned long) operandLitValue (right) == 0) {
+ if ((TYPE_UDWORD) operandLitValue (right) == 0) {
werror (E_DIVIDE_BY_ZERO);
retval = right;
}
- else
- retval = operandFromLit ((SPEC_USIGN(let) ?
- (unsigned long) operandLitValue (left) :
- (long) operandLitValue (left)) %
- (SPEC_USIGN(ret) ?
- (unsigned long) operandLitValue (right) :
- (long) operandLitValue (right)));
-
+ else
+ {
+ if (SPEC_USIGN(let) || SPEC_USIGN(ret))
+ /* one of the operands is unsigned */
+ retval = operandFromLit ((TYPE_UDWORD) operandLitValue (left) %
+ (TYPE_UDWORD) operandLitValue (right));
+ else
+ /* both operands are signed */
+ retval = operandFromLit ((TYPE_DWORD) operandLitValue (left) %
+ (TYPE_DWORD) operandLitValue (right));
+ }
break;
case LEFT_OP:
- retval = operandFromLit ((SPEC_USIGN(let) ?
- (unsigned long) operandLitValue (left) :
- (long) operandLitValue (left)) <<
- (SPEC_USIGN(ret) ?
- (unsigned long) operandLitValue (right) :
- (long) operandLitValue (right)));
+ /* The number of left shifts is always unsigned. Signed doesn't make
+ sense here. Shifting by a negative number is impossible. */
+ retval = operandFromLit ((TYPE_UDWORD) operandLitValue (left) <<
+ (TYPE_UDWORD) operandLitValue (right));
break;
case RIGHT_OP:
- retval = operandFromLit ((SPEC_USIGN(let) ?
- (unsigned long) operandLitValue (left) :
- (long) operandLitValue (left)) >>
- (SPEC_USIGN(ret) ?
- (unsigned long) operandLitValue (right) :
- (long) operandLitValue (right)));
+ /* The number of right shifts is always unsigned. Signed doesn't make
+ sense here. Shifting by a negative number is impossible. */
+ if (SPEC_USIGN(let))
+ /* unsigned: logic shift right */
+ retval = operandFromLit ((TYPE_UDWORD) operandLitValue (left) >>
+ (TYPE_UDWORD) operandLitValue (right));
+ else
+ /* signed: arithmetic shift right */
+ retval = operandFromLit ((TYPE_DWORD ) operandLitValue (left) >>
+ (TYPE_UDWORD) operandLitValue (right));
break;
case EQ_OP:
- retval = operandFromLit (operandLitValue (left) ==
- operandLitValue (right));
+ /* this op doesn't care about signedness */
+ {
+ TYPE_UDWORD l, r;
+
+ l = (TYPE_UDWORD) operandLitValue (left);
+ if (SPEC_NOUN(OP_VALUE(left)->type) == V_CHAR)
+ l &= 0xff;
+ else if (!SPEC_LONG (OP_VALUE(left)->type))
+ l &= 0xffff;
+ r = (TYPE_UDWORD) operandLitValue (right);
+ if (SPEC_NOUN(OP_VALUE(right)->type) == V_CHAR)
+ r &= 0xff;
+ else if (!SPEC_LONG (OP_VALUE(right)->type))
+ r &= 0xffff;
+ retval = operandFromLit (l == r);
+ }
break;
case '<':
retval = operandFromLit (operandLitValue (left) <
operandLitValue (right));
break;
case BITWISEAND:
- retval = operandFromLit ((long)operandLitValue(left) &
- (long)operandLitValue(right));
+ retval = operandFromValue (valCastLiteral (type,
+ (TYPE_UDWORD)operandLitValue(left) &
+ (TYPE_UDWORD)operandLitValue(right)));
break;
case '|':
- retval = operandFromLit ((long)operandLitValue (left) |
- (long)operandLitValue (right));
+ retval = operandFromValue (valCastLiteral (type,
+ (TYPE_UDWORD)operandLitValue(left) |
+ (TYPE_UDWORD)operandLitValue(right)));
break;
case '^':
- retval = operandFromLit ((long)operandLitValue (left) ^
- (long)operandLitValue (right));
+ retval = operandFromValue (valCastLiteral (type,
+ (TYPE_UDWORD)operandLitValue(left) ^
+ (TYPE_UDWORD)operandLitValue(right)));
break;
case AND_OP:
retval = operandFromLit (operandLitValue (left) &&
break;
case RRC:
{
- long i = (long) operandLitValue (left);
+ TYPE_UDWORD i = (TYPE_UDWORD) operandLitValue (left);
retval = operandFromLit ((i >> (getSize (operandType (left)) * 8 - 1)) |
(i << 1));
break;
case RLC:
{
- long i = (long) operandLitValue (left);
+ TYPE_UDWORD i = (TYPE_UDWORD) operandLitValue (left);
retval = operandFromLit ((i << (getSize (operandType (left)) * 8 - 1)) |
(i >> 1));
break;
case UNARYMINUS:
- retval = operandFromLit (-1 * operandLitValue (left));
+ retval = operandFromValue (valCastLiteral (type,
+ -1 * operandLitValue (left)));
break;
case '~':
- retval = operandFromLit (~((long) operandLitValue (left)));
+ retval = operandFromLit (~((TYPE_UDWORD) operandLitValue (left)));
break;
case '!':
/*-----------------------------------------------------------------*/
/* isOperandEqual - compares two operand & return 1 if they r = */
/*-----------------------------------------------------------------*/
-int
+int
isOperandEqual (operand * left, operand * right)
{
/* if the pointers are equal then they are equal */
register equivalent for a local symbol */
if (sym->level && sym->etype && SPEC_OCLS (sym->etype) &&
(IN_FARSPACE (SPEC_OCLS (sym->etype)) &&
- /* (!TARGET_IS_DS390)) && */
(!(options.model == MODEL_FLAT24)) ) &&
options.stackAuto == 0)
ok = 0;
!sym->_isparm && /* not a parameter */
sym->level && /* is a local variable */
!sym->addrtaken && /* whose address has not been taken */
- !sym->reqv && /* does not already have a register euivalence */
+ !sym->reqv && /* does not already have a reg equivalence */
!IS_VOLATILE (sym->etype) && /* not declared as volatile */
!IS_STATIC (sym->etype) && /* and not declared static */
!sym->islbl && /* not a label */
ok && /* farspace check */
!IS_BITVAR (sym->etype) /* not a bit variable */
)
- {
+ {
/* we will use it after all optimizations
and before liveRange calculation */
OP_SYMBOL (sym->reqv)->key = sym->key;
OP_SYMBOL (sym->reqv)->isreqv = 1;
OP_SYMBOL (sym->reqv)->islocal = 1;
+ OP_SYMBOL (sym->reqv)->onStack = sym->onStack;
SPIL_LOC (sym->reqv) = sym;
}
else
IC_RESULT (ic)->isaddr = (!IS_AGGREGATE (sym->type));
- IC_RESULT (ic)->operand.symOperand->args = sym->args;
-
ADDTOCHAIN (ic);
return IC_RESULT (ic);
case EX_LINK:
return operandFromLink (tree->opval.lnk);
- }
+ break;
- assert (0);
- /* Just to keep the comiler happy */
+ default:
+ assert (0);
+ }
+
+ /* Just to keep the compiler happy */
return (operand *) 0;
}
sym_link *ltype = operandType (*op1);
ctype = computeType (ltype, rtype);
+
*op1 = geniCodeCast (ctype, *op1, TRUE);
*op2 = geniCodeCast (ctype, *op2, TRUE);
if (IS_SPEC (type) &&
IS_TRUE_SYMOP (op) &&
(!IN_FARSPACE (SPEC_OCLS (etype)) ||
- /* TARGET_IS_DS390)) */
(options.model == MODEL_FLAT24) ))
{
op = operandFromOperand (op);
/* ic->supportRtn = ((IS_GENPTR(type) | op->isGptr) & op->isaddr); */
- /* if the right is a symbol */
- if (op->type == SYMBOL)
- IC_RESULT (ic)->operand.symOperand->args =
- op->operand.symOperand->args;
ADDTOCHAIN (ic);
return IC_RESULT (ic);
if (IS_PTR(type)) { // to a pointer
if (!IS_PTR(optype) && !IS_FUNC(optype) && !IS_AGGREGATE(optype)) { // from a non pointer
if (IS_INTEGRAL(optype)) {
- // maybe this is NULL, than it's ok.
+ // maybe this is NULL, than it's ok.
if (!(IS_LITERAL(optype) && (SPEC_CVAL(optype).v_ulong ==0))) {
- if (!TARGET_IS_Z80 && !TARGET_IS_GBZ80 && IS_GENPTR(type)) {
+ if (port->s.gptr_size > port->s.fptr_size && IS_GENPTR(type)) {
// no way to set the storage
if (IS_LITERAL(optype)) {
werror(E_LITERAL_GENERIC);
}
}
} else { // from a pointer to a pointer
- if (!TARGET_IS_Z80 && !TARGET_IS_GBZ80) {
+ if (port->s.gptr_size > port->s.fptr_size /*!TARGET_IS_Z80 && !TARGET_IS_GBZ80*/) {
// if not a pointer to a function
if (!(IS_CODEPTR(type) && IS_FUNC(type->next) && IS_FUNC(optype))) {
if (implicit) { // if not to generic, they have to match
}
}
if (errors) {
- /* fprintf (stderr, "%s%s %d: ", op->operand.symOperand->name,
- implicit?"(implicit)":"", errors); */
- fprintf (stderr, "from type '");
- printTypeChain (optype, stderr);
- fprintf (stderr, "' to type '");
- printTypeChain (type, stderr);
- fprintf (stderr, "'\n");
+ printFromToType (optype, type);
}
/* if they are the same size create an assignment */
/* preserve the storage class & output class */
/* of the original variable */
restype = getSpec (operandType (IC_RESULT (ic)));
- SPEC_SCLS (restype) = SPEC_SCLS (opetype);
+ if (!IS_LITERAL(opetype))
+ SPEC_SCLS (restype) = SPEC_SCLS (opetype);
SPEC_OCLS (restype) = SPEC_OCLS (opetype);
ADDTOCHAIN (ic);
/* if the right is a literal & power of 2 */
/* then make it a left shift */
- /* code generated for 1 byte * 1 byte literal = 2 bytes result is more
- efficient in most cases than 2 bytes result = 2 bytes << literal
+ /* code generated for 1 byte * 1 byte literal = 2 bytes result is more
+ efficient in most cases than 2 bytes result = 2 bytes << literal
if port has 1 byte muldiv */
if (p2 && !IS_FLOAT (letype) &&
- !((resultIsInt) && (getSize (resType) != getSize (ltype)) &&
+ !((resultIsInt) && (getSize (resType) != getSize (ltype)) &&
(port->support.muldiv == 1)))
{
if ((resultIsInt) && (getSize (resType) != getSize (ltype)))
resType = usualBinaryConversions (&left, &right);
- /* if the right is a literal & power of 2 */
- /* then make it a right shift */
+ /* if the right is a literal & power of 2
+ and left is unsigned then make it a
+ right shift */
if (IS_LITERAL (retype) &&
!IS_FLOAT (letype) &&
+ SPEC_USIGN(letype) &&
(p2 = powof2 ((unsigned long)
floatFromVal (right->operand.valOperand)))) {
ic = newiCode (RIGHT_OP, left, operandFromLit (p2)); /* right shift */
ADDTOCHAIN (ic);
subtractExit:
+ if (IS_VOID(ltype->next) || IS_VOID(rtype->next)) {
+ return result;
+ }
+
+ // should we really do this? is this ANSI?
return geniCodeDivision (result,
operandFromLit (getSize (ltype->next)));
}
/* geniCodeAdd - generates iCode for addition */
/*-----------------------------------------------------------------*/
operand *
-geniCodeAdd (operand * left, operand * right,int lvl)
+geniCodeAdd (operand * left, operand * right, int lvl)
{
iCode *ic;
sym_link *resType;
int isarray = 0;
LRTYPE;
- /* if left is an array then array access */
- if (IS_ARRAY (ltype))
- return geniCodeArray (left, right,lvl);
-
/* if the right side is LITERAL zero */
/* return the left side */
if (IS_LITERAL (retype) && right->isLiteral && !floatFromVal (valFromType (retype)))
if (IS_LITERAL (letype) && left->isLiteral && !floatFromVal (valFromType (letype)))
return right;
- /* if left is an array or pointer then size */
- if (IS_PTR (ltype))
+ /* if left is a pointer then size */
+ if (IS_PTR (ltype) || IS_ARRAY(ltype))
{
isarray = left->isaddr;
// there is no need to multiply with 1
resType = copyLinkChain (ltype);
}
else
- { /* make them the same size */
+ { // make them the same size
resType = usualBinaryConversions (&left, &right);
}
sym_link *etype;
sym_link *ptype;
-
if (IS_PTR (type) && !force)
return type;
etype = getSpec (type);
- ptype = newLink ();
+ ptype = newLink (DECLARATOR);
ptype->next = type;
- /* if the output class is generic */
- if ((DCL_TYPE (ptype) = PTR_TYPE (SPEC_OCLS (etype))) == CPOINTER)
- DCL_PTR_CONST (ptype) = port->mem.code_ro;
-
- /* if the variable was declared a constant */
- /* then the pointer points to a constant */
- if (IS_CONSTANT (etype))
- DCL_PTR_CONST (ptype) = 1;
-
- /* the variable was volatile then pointer to volatile */
- if (IS_VOLATILE (etype))
- DCL_PTR_VOLATILE (ptype) = 1;
+
+ /* set the pointer depending on the storage class */
+ DCL_TYPE (ptype) = PTR_TYPE (SPEC_OCLS (etype));
return ptype;
}
sym_link *opetype = getSpec (optype);
/* set the pointer depending on the storage class */
- if ((DCL_TYPE (optype) = PTR_TYPE (SPEC_OCLS (opetype))) == CPOINTER)
- DCL_PTR_CONST (optype) = port->mem.code_ro;
-
-
- /* if the variable was declared a constant */
- /* then the pointer points to a constant */
- if (IS_CONSTANT (opetype))
- DCL_PTR_CONST (optype) = 1;
+ DCL_TYPE (optype) = PTR_TYPE (SPEC_OCLS (opetype));
- /* the variable was volatile then pointer to volatile */
- if (IS_VOLATILE (opetype))
- DCL_PTR_VOLATILE (optype) = 1;
op->isaddr = 0;
return op;
}
{
left = geniCodeRValue (left, FALSE);
}
- return geniCodeDerefPtr (geniCodeAdd (left, right,lvl),lvl);
+ return geniCodeDerefPtr (geniCodeAdd (left, right, lvl), lvl);
}
right = geniCodeMultiply (right,
symbol *element = getStructElement (SPEC_STRUCT (etype),
right->operand.symOperand);
+ wassert(IS_SYMOP(right));
+
/* add the offset */
ic = newiCode ('+', left, operandFromLit (element->offset));
SPEC_SCLS (retype) = SPEC_SCLS (etype);
SPEC_OCLS (retype) = SPEC_OCLS (etype);
SPEC_VOLATILE (retype) |= SPEC_VOLATILE (etype);
-
+ SPEC_CONST (retype) |= SPEC_CONST (etype);
+
if (IS_PTR (element->type))
setOperandType (IC_RESULT (ic), aggrToPtr (operandType (IC_RESULT (ic)), TRUE));
-
+
IC_RESULT (ic)->isaddr = (!IS_AGGREGATE (element->type));
-
ADDTOCHAIN (ic);
return (islval ? IC_RESULT (ic) : geniCodeRValue (IC_RESULT (ic), TRUE));
}
/* return op; */
/* } */
- p = newLink ();
- p->class = DECLARATOR;
+ p = newLink (DECLARATOR);
/* set the pointer depending on the storage class */
- if ((DCL_TYPE (p) = PTR_TYPE (SPEC_OCLS (opetype))) == CPOINTER)
- DCL_PTR_CONST (p) = port->mem.code_ro;
-
- /* make sure we preserve the const & volatile */
- if (IS_CONSTANT (opetype))
- DCL_PTR_CONST (p) = 1;
-
- if (IS_VOLATILE (opetype))
- DCL_PTR_VOLATILE (p) = 1;
+ DCL_TYPE (p) = PTR_TYPE (SPEC_OCLS (opetype));
p->next = copyLinkChain (optype);
sym_link *rtype, *retype;
sym_link *optype = operandType (op);
- /* if this is a pointer then generate the rvalue */
- if (IS_PTR (optype))
+ // if this is an array then array access
+ if (IS_ARRAY (optype)) {
+ // don't worry, this will be optimized out later
+ return geniCodeArray (op, operandFromLit (0), lvl);
+ }
+
+ // just in case someone screws up
+ wassert (IS_PTR (optype));
+
+ if (IS_TRUE_SYMOP (op))
{
- if (IS_TRUE_SYMOP (op))
- {
- op->isaddr = 1;
- op = geniCodeRValue (op, TRUE);
- }
- else
- op = geniCodeRValue (op, TRUE);
+ op->isaddr = 1;
+ op = geniCodeRValue (op, TRUE);
}
/* now get rid of the pointer part */
else
{
retype = getSpec (rtype = copyLinkChain (optype->next));
+ /* outputclass needs 2b updated */
+ setOClass (optype, retype);
}
-
- /* if this is a pointer then outputclass needs 2b updated */
- if (IS_PTR (optype))
- setOClass (optype, retype);
-
+
op->isGptr = IS_GENPTR (optype);
- /* if the pointer was declared as a constant */
- /* then we cannot allow assignment to the derefed */
- if (IS_PTR_CONST (optype))
- SPEC_CONST (retype) = 1;
-
op->isaddr = (IS_PTR (rtype) ||
IS_STRUCT (rtype) ||
IS_INT (rtype) ||
check if the literal value is within bounds */
if (IS_INTEGRAL (ltype) && IS_VALOP (right) && IS_LITERAL (rtype))
{
- checkConstantRange(ltype,
+ checkConstantRange(ltype,
OP_VALUE(right), "compare operation", 1);
}
+ /* if one operand is a pointer and the other is a literal generic void pointer,
+ change the type of the literal generic void pointer to match the other pointer */
+ if (IS_GENPTR (ltype) && IS_VOID (ltype->next) && IS_ITEMP (left)
+ && IS_PTR (rtype) && !IS_GENPTR(rtype))
+ {
+ /* find left's definition */
+ ic = (iCode *) setFirstItem (iCodeChain);
+ while (ic)
+ {
+ if (((ic->op == CAST) || (ic->op == '='))
+ && isOperandEqual(left, IC_RESULT (ic)))
+ break;
+ else
+ ic = setNextItem (iCodeChain);
+ }
+ /* if casting literal to generic pointer, then cast to rtype instead */
+ if (ic && (ic->op == CAST) && isOperandLiteral(IC_RIGHT (ic)))
+ {
+ left = operandFromValue (valCastLiteral (rtype, operandLitValue (IC_RIGHT (ic))));
+ ltype = operandType(left);
+ }
+ }
+ if (IS_GENPTR (rtype) && IS_VOID (rtype->next) && IS_ITEMP (right)
+ && IS_PTR (ltype) && !IS_GENPTR(ltype))
+ {
+ /* find right's definition */
+ ic = (iCode *) setFirstItem (iCodeChain);
+ while (ic)
+ {
+ if (((ic->op == CAST) || (ic->op == '='))
+ && isOperandEqual(right, IC_RESULT (ic)))
+ break;
+ else
+ ic = setNextItem (iCodeChain);
+ }
+ /* if casting literal to generic pointer, then cast to rtype instead */
+ if (ic && (ic->op == CAST) && isOperandLiteral(IC_RIGHT (ic)))
+ {
+ right = operandFromValue (valCastLiteral (ltype, operandLitValue (IC_RIGHT (ic))));
+ rtype = operandType(right);
+ }
+ }
+
ctype = usualBinaryConversions (&left, &right);
ic = newiCode (op, left, right);
true = ast2iCode (tree->right->left,lvl+1);
/* move the value to a new Operand */
- result = newiTempOperand (operandType (true), 0);
+ result = newiTempOperand (tree->right->ftype, 0);
geniCodeAssign (result, geniCodeRValue (true, FALSE), 0);
/* generate an unconditional goto */
/* first check the type for pointer assignement */
if (left->isaddr && IS_PTR (ltype) && IS_ITEMP (left) &&
- compareType (ltype, rtype) < 0)
+ compareType (ltype, rtype) <= 0)
{
if (compareType (ltype->next, rtype) < 0)
right = geniCodeCast (ltype->next, right, TRUE);
return left;
}
+/*-----------------------------------------------------------------*/
+/* geniCodeDummyRead - generate code for dummy read */
+/*-----------------------------------------------------------------*/
+static void
+geniCodeDummyRead (operand * op)
+{
+ iCode *ic;
+ sym_link *type = operandType (op);
+
+ if (!IS_VOLATILE(type))
+ return;
+
+ ic = newiCode (DUMMY_READ_VOLATILE, NULL, op);
+ ADDTOCHAIN (ic);
+
+ ic->nosupdate = 1;
+}
+
/*-----------------------------------------------------------------*/
/* geniCodeSEParms - generate code for side effecting fcalls */
/*-----------------------------------------------------------------*/
IS_ADDRESS_OF_OP (parms->right))
parms->right->left->lvalue = 1;
- parms->opval.oprnd =
+ parms->opval.oprnd =
geniCodeRValue (ast2iCode (parms,lvl+1), FALSE);
-
+
parms->type = EX_OPERAND;
+ AST_ARGREG(parms) = parms->etype ? SPEC_ARGREG(parms->etype) :
+ SPEC_ARGREG(parms->ftype);
}
/*-----------------------------------------------------------------*/
/* geniCodeParms - generates parameters */
/*-----------------------------------------------------------------*/
-static void
-geniCodeParms (ast * parms, int *stack, sym_link * fetype, symbol * func,int lvl)
+value *
+geniCodeParms (ast * parms, value *argVals, int *stack,
+ sym_link * fetype, symbol * func,int lvl)
{
iCode *ic;
operand *pval;
if (!parms)
- return;
+ return argVals;
+
+ if (argVals==NULL) {
+ // first argument
+ argVals=FUNC_ARGS(func->type);
+ }
/* if this is a param node then do the left & right */
if (parms->type == EX_OP && parms->opval.op == PARAM)
{
- geniCodeParms (parms->left, stack, fetype, func,lvl);
- geniCodeParms (parms->right, stack, fetype, func,lvl);
- return;
+ argVals=geniCodeParms (parms->left, argVals, stack, fetype, func,lvl);
+ argVals=geniCodeParms (parms->right, argVals, stack, fetype, func,lvl);
+ return argVals;
}
/* get the parameter value */
}
/* if register parm then make it a send */
- if (((parms->argSym && IS_REGPARM (parms->argSym->etype)) ||
- IS_REGPARM (parms->etype)) && !func->hasVargs)
+ if ((IS_REGPARM (parms->etype) && !IFFUNC_HASVARARGS(func->type)) ||
+ IFFUNC_ISBUILTIN(func->type))
{
ic = newiCode (SEND, pval, NULL);
+ ic->argreg = SPEC_ARGREG(parms->etype);
+ ic->builtinSEND = FUNC_ISBUILTIN(func->type);
ADDTOCHAIN (ic);
}
else
{
/* now decide whether to push or assign */
- if (!(options.stackAuto || IS_RENT (fetype)))
+ if (!(options.stackAuto || IFFUNC_ISREENT (func->type)))
{
/* assign */
- operand *top = operandFromSymbol (parms->argSym);
+ operand *top = operandFromSymbol (argVals->sym);
+ /* clear useDef and other bitVectors */
+ OP_USES(top)=OP_DEFS(top)=OP_SYMBOL(top)->clashes = NULL;
geniCodeAssign (top, pval, 1);
}
else
}
}
+ argVals=argVals->next;
+ return argVals;
}
/*-----------------------------------------------------------------*/
geniCodeSEParms (parms,lvl);
/* first the parameters */
- geniCodeParms (parms, &stack, getSpec (operandType (left)), OP_SYMBOL (left),lvl);
+ geniCodeParms (parms, NULL, &stack, getSpec (operandType (left)), OP_SYMBOL (left),lvl);
/* now call : if symbol then pcall */
- if (IS_OP_POINTER (left) || IS_ITEMP(left))
+ if (IS_OP_POINTER (left) || IS_ITEMP(left)) {
ic = newiCode (PCALL, left, NULL);
- else
+ } else {
ic = newiCode (CALL, left, NULL);
+ }
- IC_ARGS (ic) = left->operand.symOperand->args;
type = copyLinkChain (operandType (left)->next);
etype = getSpec (type);
SPEC_EXTR (etype) = 0;
/* for all arguments that are passed in registers */
while (args)
{
-
+ int first = 1;
if (IS_REGPARM (args->etype))
{
operand *opr = operandFromValue (args);
if (IN_FARSPACE (SPEC_OCLS (sym->etype)) &&
options.stackAuto == 0 &&
- /* !TARGET_IS_DS390) */
(!(options.model == MODEL_FLAT24)) )
{
}
}
}
- ic = newiCode (RECEIVE, NULL, NULL);
- currFunc->recvSize = getSize (sym->etype);
+ ic = newiCode (RECEIVE, NULL, NULL);
+ ic->argreg = SPEC_ARGREG(args->etype);
+ if (first) {
+ currFunc->recvSize = getSize (sym->type);
+ first = 0;
+ }
IC_RESULT (ic) = opr;
ADDTOCHAIN (ic);
}
/* create a proc icode */
ic = newiCode (FUNCTION, func, NULL);
- /* if the function has parmas then */
- /* save the parameters information */
- ic->argLabel.args = tree->values.args;
- ic->lineno = OP_SYMBOL (func)->lineDef;
+ lineno=ic->lineno = OP_SYMBOL (func)->lineDef;
ADDTOCHAIN (ic);
if (tree->trueLabel)
geniCodeGoto (tree->trueLabel);
else
- assert (1);
+ assert (0);
}
else
{
if (tree->falseLabel)
geniCodeGoto (tree->falseLabel);
else
- assert (1);
+ assert (0);
}
goto exit;
}
operand *boundary;
symbol *falseLabel;
set *labels = NULL;
+ int needRangeCheck = !optimize.noJTabBoundary
+ || tree->values.switchVals.swDefault;
if (!tree || !caseVals)
return 0;
/* all integer numbers between the maximum & minimum must */
/* be present , the maximum value should not exceed 255 */
min = max = (int) floatFromVal (vch = caseVals);
- sprintf (buffer, "_case_%d_%d",
+ SNPRINTF (buffer, sizeof(buffer),
+ "_case_%d_%d",
tree->values.switchVals.swNum,
min);
addSet (&labels, newiTempLabel (buffer));
{
if (((t = (int) floatFromVal (vch)) - max) != 1)
return 0;
- sprintf (buffer, "_case_%d_%d",
+ SNPRINTF (buffer, sizeof(buffer),
+ "_case_%d_%d",
tree->values.switchVals.swNum,
t);
addSet (&labels, newiTempLabel (buffer));
/* if the number of case statements <= 2 then */
/* it is not economical to create the jump table */
/* since two compares are needed for boundary conditions */
- if ((!optimize.noJTabBoundary && cnt <= 2) || max > (255 / 3))
+ if ((needRangeCheck && cnt <= 2) || max > (255 / 3))
return 0;
if (tree->values.switchVals.swDefault)
- sprintf (buffer, "_default_%d", tree->values.switchVals.swNum);
+ {
+ SNPRINTF (buffer, sizeof(buffer), "_default_%d", tree->values.switchVals.swNum);
+ }
else
- sprintf (buffer, "_swBrk_%d", tree->values.switchVals.swNum);
+ {
+ SNPRINTF (buffer, sizeof(buffer), "_swBrk_%d", tree->values.switchVals.swNum);
+ }
+
falseLabel = newiTempLabel (buffer);
/* so we can create a jumptable */
/* first we rule out the boundary conditions */
/* if only optimization says so */
- if (!optimize.noJTabBoundary)
+ if (needRangeCheck)
{
sym_link *cetype = getSpec (operandType (cond));
/* no need to check the lower bound if
if (min)
{
cond = geniCodeSubtract (cond, operandFromLit (min));
- setOperandType (cond, UCHARTYPE);
+ if (!IS_LITERAL(getSpec(operandType(cond))))
+ setOperandType (cond, UCHARTYPE);
}
/* now create the jumptable */
/*-----------------------------------------------------------------*/
/* geniCodeSwitch - changes a switch to a if statement */
/*-----------------------------------------------------------------*/
-void
+void
geniCodeSwitch (ast * tree,int lvl)
{
iCode *ic;
operand *cond = geniCodeRValue (ast2iCode (tree->left,lvl+1), FALSE);
value *caseVals = tree->values.switchVals.swVals;
symbol *trueLabel, *falseLabel;
+
+ /* If the condition is a literal, then just jump to the */
+ /* appropriate case label. */
+ if (IS_LITERAL(getSpec(operandType(cond))))
+ {
+ int switchVal, caseVal;
+
+ switchVal = (int) floatFromVal (cond->operand.valOperand);
+ while (caseVals)
+ {
+ caseVal = (int) floatFromVal (caseVals);
+ if (caseVal == switchVal)
+ {
+ SNPRINTF (buffer, sizeof(buffer), "_case_%d_%d",
+ tree->values.switchVals.swNum, caseVal);
+ trueLabel = newiTempLabel (buffer);
+ geniCodeGoto (trueLabel);
+ goto jumpTable;
+ }
+ caseVals = caseVals->next;
+ }
+ goto defaultOrBreak;
+ }
/* if we can make this a jump table */
if (geniCodeJumpTable (cond, caseVals, tree))
operandFromValue (caseVals),
EQ_OP);
- sprintf (buffer, "_case_%d_%d",
+ SNPRINTF (buffer, sizeof(buffer), "_case_%d_%d",
tree->values.switchVals.swNum,
(int) floatFromVal (caseVals));
trueLabel = newiTempLabel (buffer);
}
-
+defaultOrBreak:
/* if default is present then goto break else break */
if (tree->values.switchVals.swDefault)
- sprintf (buffer, "_default_%d", tree->values.switchVals.swNum);
+ {
+ SNPRINTF (buffer, sizeof(buffer), "_default_%d", tree->values.switchVals.swNum);
+ }
else
- sprintf (buffer, "_swBrk_%d", tree->values.switchVals.swNum);
+ {
+ SNPRINTF (buffer, sizeof(buffer), "_swBrk_%d", tree->values.switchVals.swNum);
+ }
falseLabel = newiTempLabel (buffer);
geniCodeGoto (falseLabel);
operand *right = NULL;
if (!tree)
return NULL;
+
/* set the global variables for filename & line number */
if (tree->filename)
filename = tree->filename;
(tree->opval.op == NULLOP ||
tree->opval.op == BLOCK))
{
- ast2iCode (tree->left,lvl+1);
- ast2iCode (tree->right,lvl+1);
+ if (tree->left && tree->left->type == EX_VALUE)
+ geniCodeDummyRead (ast2iCode (tree->left,lvl+1));
+ else
+ ast2iCode (tree->left,lvl+1);
+ if (tree->right && tree->right->type == EX_VALUE)
+ geniCodeDummyRead (ast2iCode (tree->right,lvl+1));
+ else
+ ast2iCode (tree->right,lvl+1);
return NULL;
}
case RIGHT_OP:
return geniCodeRightShift (geniCodeRValue (left, FALSE),
geniCodeRValue (right, FALSE));
- case CAST:
+ case CAST:
+#if 0 // this indeed needs a second thought
+ {
+ operand *op;
+
+ // let's keep this simple: get the rvalue we need
+ op=geniCodeRValue (right, FALSE);
+ // now cast it to whatever we want
+ op=geniCodeCast (operandType(left), op, FALSE);
+ // if this is going to be used as an lvalue, make it so
+ if (tree->lvalue) {
+ op->isaddr=1;
+ }
+ return op;
+ }
+#else // bug #604575, is it a bug ????
return geniCodeCast (operandType (left),
geniCodeRValue (right, FALSE), FALSE);
+#endif
case '~':
- case '!':
case RRC:
case RLC:
return geniCodeUnary (geniCodeRValue (left, FALSE), tree->opval.op);
+ case '!':
case GETHBIT:
{
operand *op = geniCodeUnary (geniCodeRValue (left, FALSE), tree->opval.op);
case NE_OP:
case AND_OP:
case OR_OP:
+ /* different compilers (even different gccs) evaluate
+ the two calls in a different order. to get the same
+ result on all machines we've to specify a clear sequence.
return geniCodeLogic (geniCodeRValue (left, FALSE),
- geniCodeRValue (right, FALSE),
- tree->opval.op);
+ geniCodeRValue (right, FALSE),
+ tree->opval.op);
+ */
+ {
+ operand *leftOp, *rightOp;
+
+ rightOp = geniCodeRValue (right, FALSE);
+ leftOp = geniCodeRValue (left , FALSE);
+
+ return geniCodeLogic (leftOp, rightOp, tree->opval.op);
+ }
case '?':
return geniCodeConditional (tree,lvl);
ast2iCode (tree,0);
return reverseiCChain ();
}
+
+static const char *opTypeToStr(OPTYPE op)
+{
+ switch(op)
+ {
+ case SYMBOL: return "symbol";
+ case VALUE: return "value";
+ case TYPE: return "type";
+ }
+ return "undefined type";
+}
+
+
+operand *validateOpType(operand *op,
+ const char *macro,
+ const char *args,
+ OPTYPE type,
+ const char *file,
+ unsigned line)
+{
+ if (op && op->type == type)
+ {
+ return op;
+ }
+ fprintf(stderr,
+ "Internal error: validateOpType failed in %s(%s) @ %s:%u:"
+ " expected %s, got %s\n",
+ macro, args, file, line,
+ opTypeToStr(type), op ? opTypeToStr(op->type) : "null op");
+ exit(-1);
+ return op; // never reached, makes compiler happy.
+}
projects / fw / sdcc / blobdiff