/* */
/* */
/* */
-/* (C) 1998-2000 Ullrich von Bassewitz */
+/* (C) 1998-2002 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/*****************************************************************************/
-/* Data */
+/* Data */
/*****************************************************************************/
type type_long [] = { T_LONG, T_END };
type type_ulong [] = { T_ULONG, T_END };
type type_void [] = { T_VOID, T_END };
+type type_size_t [] = { T_UINT, T_END };
/* Create a copy of the given type on the heap */
{
unsigned Len = (TypeLen (T) + 1) * sizeof (type);
- return memcpy (xmalloc (Len), T, Len);
+ return (type*) memcpy (xmalloc (Len), T, Len);
}
* trailing T_END.
*/
{
- return xmalloc (Len * sizeof (type));
+ return (type*) xmalloc (Len * sizeof (type));
}
+int SignExtendChar (int C)
+/* Do correct sign extension of a character */
+{
+ if (SignedChars && (C & 0x80) != 0) {
+ return C | ~0xFF;
+ } else {
+ return C & 0xFF;
+ }
+}
+
+
+
type GetDefaultChar (void)
/* Return the default char type (signed/unsigned) depending on the settings */
{
type* T = TypeAlloc (1 + DECODE_SIZE + 2);
/* Prepare the function descriptor */
- F->Flags = FD_IMPLICIT | FD_EMPTY | FD_ELLIPSIS;
+ F->Flags = FD_IMPLICIT | FD_EMPTY | FD_VARIADIC;
F->SymTab = &EmptySymTab;
F->TagTab = &EmptySymTab;
+type* PointerTo (const type* T)
+/* Return a type string that is "pointer to T". The type string is allocated
+ * on the heap and may be freed after use.
+ */
+{
+ /* Get the size of the type string including the terminator */
+ unsigned Size = TypeLen (T) + 1;
+
+ /* Allocate the new type string */
+ type* P = TypeAlloc (Size + 1);
+
+ /* Create the return type... */
+ P[0] = T_PTR;
+ memcpy (P+1, T, Size * sizeof (type));
+
+ /* ...and return it */
+ return P;
+}
+
+
+
static type PrintTypeComp (FILE* F, type T, type Mask, const char* Name)
/* Check for a specific component of the type. If it is there, print the
* name and remove it. Return the type with the component removed.
*/
{
if ((T & Mask) == Mask) {
- fprintf (F, "%s ", Name);
+ fprintf (F, "%s ", Name);
T &= ~Mask;
}
return T;
/* Output translation of type array. */
{
type T;
-
+ unsigned long Size;
/* Walk over the complete string */
while ((T = *Type++) != T_END) {
T = PrintTypeComp (F, T, T_QUAL_CONST, "const");
T = PrintTypeComp (F, T, T_QUAL_VOLATILE, "volatile");
- /* Signedness */
- T = PrintTypeComp (F, T, T_SIGN_SIGNED, "signed");
+ /* Signedness. Omit the signedness specifier for long and int */
+ if ((T & T_MASK_TYPE) != T_TYPE_INT && (T & T_MASK_TYPE) != T_TYPE_LONG) {
+ T = PrintTypeComp (F, T, T_SIGN_SIGNED, "signed");
+ }
T = PrintTypeComp (F, T, T_SIGN_UNSIGNED, "unsigned");
/* Now check the real type */
switch (T & T_MASK_TYPE) {
case T_TYPE_CHAR:
- fprintf (F, "char\n");
+ fprintf (F, "char");
break;
case T_TYPE_SHORT:
- fprintf (F, "short\n");
+ fprintf (F, "short");
break;
case T_TYPE_INT:
- fprintf (F, "int\n");
+ fprintf (F, "int");
break;
case T_TYPE_LONG:
- fprintf (F, "long\n");
+ fprintf (F, "long");
break;
case T_TYPE_LONGLONG:
- fprintf (F, "long long\n");
+ fprintf (F, "long long");
break;
case T_TYPE_FLOAT:
- fprintf (F, "float\n");
+ fprintf (F, "float");
break;
case T_TYPE_DOUBLE:
- fprintf (F, "double\n");
+ fprintf (F, "double");
break;
case T_TYPE_VOID:
- fprintf (F, "void\n");
+ fprintf (F, "void");
break;
case T_TYPE_STRUCT:
- fprintf (F, "struct %s\n", ((SymEntry*) DecodePtr (Type))->Name);
+ fprintf (F, "struct %s", ((SymEntry*) DecodePtr (Type))->Name);
Type += DECODE_SIZE;
break;
case T_TYPE_UNION:
- fprintf (F, "union %s\n", ((SymEntry*) DecodePtr (Type))->Name);
+ fprintf (F, "union %s", ((SymEntry*) DecodePtr (Type))->Name);
Type += DECODE_SIZE;
break;
case T_TYPE_ARRAY:
- fprintf (F, "array[%lu] of ", Decode (Type));
- Type += DECODE_SIZE;
- break;
+ /* Recursive call */
+ PrintType (F, Type + DECODE_SIZE);
+ Size = Decode (Type);
+ if (Size == 0) {
+ fprintf (F, "[]");
+ } else {
+ fprintf (F, "[%lu]", Size);
+ }
+ return;
case T_TYPE_PTR:
- fprintf (F, "pointer to ");
- break;
+ /* Recursive call */
+ PrintType (F, Type);
+ fprintf (F, "*");
+ return;
case T_TYPE_FUNC:
fprintf (F, "function returning ");
Type += DECODE_SIZE;
break;
default:
- fprintf (F, "unknown type: %04X\n", T);
+ fprintf (F, "unknown type: %04X", T);
}
}
+void PrintFuncSig (FILE* F, const char* Name, type* Type)
+/* Print a function signature. */
+{
+ /* Get the function descriptor */
+ const FuncDesc* D = GetFuncDesc (Type);
+
+ /* Print a comment with the function signature */
+ PrintType (F, GetFuncReturn (Type));
+ if (D->Flags & FD_FASTCALL) {
+ fprintf (F, " __fastcall__");
+ }
+ fprintf (F, " %s (", Name);
+
+ /* Parameters */
+ if (D->Flags & FD_VOID_PARAM) {
+ fprintf (F, "void");
+ } else {
+ unsigned I;
+ SymEntry* E = D->SymTab->SymHead;
+ for (I = 0; I < D->ParamCount; ++I) {
+ if (I > 0) {
+ fprintf (F, ", ");
+ }
+ PrintType (F, E->Type);
+ E = E->NextSym;
+ }
+ }
+
+ /* End of parameter list */
+ fprintf (F, ")");
+}
+
+
+
void PrintRawType (FILE* F, const type* Type)
/* Print a type string in raw format (for debugging) */
{
-type UnqualifiedType (type T)
-/* Return the unqalified type */
-{
- return (T & ~T_MASK_QUAL);
-}
-
-
-
unsigned SizeOf (const type* T)
/* Compute size of object represented by type array. */
{
switch (UnqualifiedType (T[0])) {
case T_VOID:
- Error (ERR_ILLEGAL_SIZE);
- return 0;
+ return 0; /* Assume voids have size zero */
case T_SCHAR:
case T_UCHAR:
- return 1;
+ return SIZEOF_CHAR;
case T_SHORT:
case T_USHORT:
+ return SIZEOF_SHORT;
+
case T_INT:
case T_UINT:
+ return SIZEOF_INT;
+
case T_PTR:
- return 2;
+ case T_FUNC: /* Maybe pointer to function */
+ return SIZEOF_PTR;
case T_LONG:
case T_ULONG:
- return 4;
+ return SIZEOF_LONG;
case T_LONGLONG:
case T_ULONGLONG:
- return 8;
+ return SIZEOF_LONGLONG;
case T_ENUM:
- return 2;
+ return SIZEOF_INT;
case T_FLOAT:
+ return SIZEOF_FLOAT;
+
case T_DOUBLE:
- return 4;
+ return SIZEOF_DOUBLE;
case T_STRUCT:
case T_UNION:
- Entry = DecodePtr (T+1);
+ Entry = (SymEntry*) DecodePtr (T+1);
return Entry->V.S.Size;
case T_ARRAY:
/* Compute size of pointer object. */
{
/* We are expecting a pointer expression */
- CHECK ((*T & T_CLASS_PTR) != 0);
+ CHECK ((T[0] & T_MASK_CLASS) == T_CLASS_PTR);
/* Skip the pointer or array token itself */
if (IsTypeArray (T)) {
+unsigned CheckedSizeOf (const type* T)
+/* Return the size of a data type. If the size is zero, emit an error and
+ * return some valid size instead (so the rest of the compiler doesn't have
+ * to work with invalid sizes).
+ */
+{
+ unsigned Size = SizeOf (T);
+ if (Size == 0) {
+ Error ("Size of data type is unknown");
+ Size = SIZEOF_CHAR; /* Don't return zero */
+ }
+ return Size;
+}
+
+
+
+unsigned CheckedPSizeOf (const type* T)
+/* Return the size of a data type that is pointed to by a pointer. If the
+ * size is zero, emit an error and return some valid size instead (so the
+ * rest of the compiler doesn't have to work with invalid sizes).
+ */
+{
+ unsigned Size = PSizeOf (T);
+ if (Size == 0) {
+ Error ("Size of data type is unknown");
+ Size = SIZEOF_CHAR; /* Don't return zero */
+ }
+ return Size;
+}
+
+
+
unsigned TypeOf (const type* T)
/* Get the code generator base type of the object */
{
return CF_LONG | CF_UNSIGNED;
case T_FUNC:
- F = DecodePtr (T+1);
- return (F->Flags & FD_ELLIPSIS)? 0 : CF_FIXARGC;
+ F = (FuncDesc*) DecodePtr (T+1);
+ return (F->Flags & FD_VARIADIC)? 0 : CF_FIXARGC;
case T_STRUCT:
case T_UNION:
return CF_INT | CF_UNSIGNED;
default:
- Error (ERR_ILLEGAL_TYPE);
+ Error ("Illegal type");
return CF_INT;
}
}
*/
{
/* We are expecting a pointer expression */
- CHECK ((*T & T_MASK_CLASS) == T_CLASS_PTR);
+ CHECK ((T[0] & T_MASK_CLASS) == T_CLASS_PTR);
/* Skip the pointer or array token itself */
if (IsTypeArray (T)) {
-int IsTypeChar (const type* T)
-/* Return true if this is a character type */
-{
- return (T[0] & T_MASK_TYPE) == T_TYPE_CHAR;
-}
-
-
-
-int IsTypeInt (const type* T)
-/* Return true if this is an int type (signed or unsigned) */
-{
- return (T[0] & T_MASK_TYPE) == T_TYPE_INT;
-}
-
-
-
-int IsTypeLong (const type* T)
-/* Return true if this is a long type (signed or unsigned) */
-{
- return (T[0] & T_MASK_TYPE) == T_TYPE_LONG;
-}
-
-
-
-int IsTypePtr (const type* T)
-/* Return true if this is a pointer type */
-{
- return ((T[0] & T_MASK_TYPE) == T_TYPE_PTR);
-}
-
-
-
-int IsTypeArray (const type* T)
-/* Return true if this is an array type */
-{
- return ((T[0] & T_MASK_TYPE) == T_TYPE_ARRAY);
-}
-
-
-
-int IsTypeVoid (const type* T)
-/* Return true if this is a void type */
-{
- return (T[0] & T_MASK_TYPE) == T_TYPE_VOID;
-}
-
-
-
-int IsTypeFunc (const type* T)
-/* Return true if this is a function class */
+int IsClassInt (const type* T)
+/* Return true if this is an integer type */
{
- return ((T[0] & T_MASK_TYPE) == T_TYPE_FUNC);
+ return (T[0] & T_MASK_CLASS) == T_CLASS_INT;
}
-int IsClassInt (const type* T)
-/* Return true if this is an integer type */
+int IsClassFloat (const type* T)
+/* Return true if this is a float type */
{
- return (T[0] & T_MASK_CLASS) == T_CLASS_INT;
+ return (T[0] & T_MASK_CLASS) == T_CLASS_FLOAT;
}
int IsFastCallFunc (const type* T)
-/* Return true if this is a function type with __fastcall__ calling conventions */
+/* Return true if this is a function type or pointer to function with
+ * __fastcall__ calling conventions
+ */
{
- FuncDesc* F;
- CHECK (IsTypeFunc (T));
- F = DecodePtr (T+1);
+ FuncDesc* F = GetFuncDesc (T);
return (F->Flags & FD_FASTCALL) != 0;
}
-int IsTypeFuncPtr (const type* T)
-/* Return true if this is a function pointer */
-{
- return ((T[0] & T_MASK_TYPE) == T_TYPE_PTR && (T[1] & T_MASK_TYPE) == T_TYPE_FUNC);
-}
-
-
-
-type GetType (const type* T)
-/* Get the raw type */
-{
- PRECONDITION (T[0] != T_END);
- return (T[0] & T_MASK_TYPE);
-}
-
-
-
-type GetClass (const type* T)
-/* Get the class of a type string */
-{
- PRECONDITION (T[0] != T_END);
- return (T[0] & T_MASK_CLASS);
-}
-
-
-
-type GetSignedness (const type* T)
-/* Get the sign of a type */
-{
- PRECONDITION (T[0] != T_END);
- return (T[0] & T_MASK_SIGN);
-}
-
-
-
-type GetSizeModifier (const type* T)
-/* Get the size modifier of a type */
+int IsVariadicFunc (const type* T)
+/* Return true if this is a function type or pointer to function type with
+ * variable parameter list
+ */
{
- PRECONDITION (T[0] != T_END);
- return (T[0] & T_MASK_SIZE);
+ FuncDesc* F = GetFuncDesc (T);
+ return (F->Flags & FD_VARIADIC) != 0;
}
-struct FuncDesc* GetFuncDesc (const type* T)
+FuncDesc* GetFuncDesc (const type* T)
/* Get the FuncDesc pointer from a function or pointer-to-function type */
{
- if (T[0] == T_PTR) {
+ if (UnqualifiedType (T[0]) == T_PTR) {
/* Pointer to function */
++T;
}
CHECK (T[0] == T_FUNC);
/* Decode the function descriptor and return it */
- return DecodePtr (T+1);
+ return (FuncDesc*) DecodePtr (T+1);
}
+type* GetFuncReturn (type* T)
+/* Return a pointer to the return type of a function or pointer-to-function type */
+{
+ if (UnqualifiedType (T[0]) == T_PTR) {
+ /* Pointer to function */
+ ++T;
+ }
+
+ /* Be sure it's a function type */
+ CHECK (T[0] == T_FUNC);
+
+ /* Return a pointer to the return type */
+ return T + 1 + DECODE_SIZE;
+
+}
+
+
projects / cc65 / blobdiff