under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
-
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-
+
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
+
In other words, you are welcome to use, share and improve this program.
You are forbidden to forbid anyone else to use, share and improve
- what you give them. Help stamp out software-hoarding!
+ what you give them. Help stamp out software-hoarding!
-------------------------------------------------------------------------*/
-#include "SDCCsymt.h"
#ifndef SDCCVAL_H
#define SDCCVAL_H
+#include "SDCCsymt.h"
+
+
+/* double to unsigned long conversion */
+/*
+ * See ISO/IEC 9899, chapter 6.3.1.4 Real floating and integer:
+ * If the value of the integral part cannot be represented by the integer type, the behavior is undefined.
+ * This shows up on Mac OS X i386 platform which useus SSE unit instead of the x87 FPU for floating-point operations
+ */
+/*
+ * on Mac OS X ppc (long) 2147483648.0 equals to 2147483647, so we explicitely convert it to 0x80000000
+ * on other known platforms (long) 2147483648.0 equals to -2147483648
+ */
+#define double2ul(val) (((val) < 0) ? (((val) < -2147483647.0) ? 0x80000000UL : (unsigned long) -((long) -(val))) : (unsigned long) (val))
+
/* value wrapper */
-typedef struct value {
- char name[ SDCC_NAME_MAX + 1 ]; /* operand accessing this value */
- link *type ; /* start of type chain */
- link *etype; /* end of type chain */
- symbol *sym ; /* Original Symbol */
- struct value *next ; /* used in initializer list*/
- unsigned vArgs : 1 ; /* arg list ended with variable arg */
-
-} value ;
-
-enum {
- INIT_NODE ,
- INIT_DEEP ,
- INIT_HOLE
-};
+typedef struct value
+ {
+ char name[SDCC_NAME_MAX + 1]; /* operand accessing this value */
+ sym_link *type; /* start of type chain */
+ sym_link *etype; /* end of type chain */
+ symbol *sym; /* Original Symbol */
+ struct value *next; /* used in initializer list */
+ unsigned vArgs:1; /* arg list ended with variable arg */
+ }
+value;
+
+typedef struct literalList
+{
+ double literalValue;
+ unsigned count;
+ struct literalList *next;
+} literalList;
+
+enum
+ {
+ INIT_NODE,
+ INIT_DEEP,
+ INIT_HOLE
+ };
/* initializer lists use this structure */
-typedef struct initList {
- int type ;
- int lineno ;
- union {
- struct ast *node ;
- struct initList *deep ;
- } init ;
-
- struct initList *next ;
-} initList ;
-
-#define IS_VARG(x) (x->vArgs)
+typedef struct initList
+ {
+ int type;
+ int lineno;
+ char *filename;
+ union
+ {
+ struct ast *node;
+ struct initList *deep;
+ }
+ init;
+
+ struct initList *next;
+ }
+initList;
+
+/* return values from checkConstantRange */
+typedef enum
+ {
+ CCR_OK, /* evaluate at runtime */
+ CCR_OVL,
+ CCR_ALWAYS_FALSE,
+ CCR_ALWAYS_TRUE
+ }
+CCR_RESULT;
+
+#define IS_VARG(x) (x->vArgs)
/* forward definitions for the symbol table related functions */
-void initValue ( );
-value *newValue ( );
-value *constVal (char * );
-value *reverseVal (value * );
-value *reverseValWithType(value * );
-value *copyValue (value * );
-value *copyValueChain (value * );
-value *strVal (char * );
-value *charVal (char * );
-value *symbolVal (symbol * );
-void printVal (value * );
-double floatFromVal (value * );
-value *array2Ptr (value * );
-value *valUnaryPM (value * );
-value *valComplement (value * );
-value *valNot (value * );
-value *valMult (value *, value * );
-value *valDiv (value *, value * );
-value *valMod (value *, value * );
-value *valPlus (value *, value * );
-value *valMinus (value *, value * );
-value *valShift (value *, value *,int);
-value *valCompare (value *, value *,int);
-value *valBitwise (value *, value *,int);
-value *valLogicAndOr (value *, value *,int);
-value *valCastLiteral (link *, double );
-value *valueFromLit (float );
-initList *newiList (int , void * );
-initList *revinit (initList * );
-initList *copyIlist (initList * );
-double list2int (initList * );
-value *list2val (initList * );
-struct ast *list2expr (initList * );
-void resolveIvalSym (initList * );
-value *valFromType (link * );
-value *constFloatVal (char * );
-int getNelements (link *, initList * );
-value *valForArray (struct ast * );
-value *valForStructElem (struct ast *, struct ast *);
-value *valForCastAggr (struct ast *, link *, struct ast *, int ) ;
+value *newValue (void);
+value *constVal (const char *);
+value *constCharVal (unsigned char);
+value *reverseVal (value *);
+value *reverseValWithType (value *);
+value *copyValue (value *);
+value *copyValueChain (value *);
+value *strVal (const char *);
+value *charVal (const char *);
+value *symbolVal (symbol *);
+void printVal (value *);
+double floatFromVal (value *);
+unsigned long ulFromVal (value *);
+
+/* convert a fixed16x16 type to double */
+double doubleFromFixed16x16(TYPE_TARGET_ULONG value);
+
+/* convert a double type to fixed16x16 */
+TYPE_TARGET_ULONG fixed16x16FromDouble(double value);
+
+CCR_RESULT checkConstantRange (sym_link *var, sym_link *lit, int op, bool exchangeOps);
+value *array2Ptr (value *);
+value *valUnaryPM (value *);
+value *valComplement (value *);
+value *valNot (value *);
+value *valMult (value *, value *);
+value *valDiv (value *, value *);
+value *valMod (value *, value *);
+value *valPlus (value *, value *);
+value *valMinus (value *, value *);
+value *valShift (value *, value *, int);
+value *valCompare (value *, value *, int);
+value *valBitwise (value *, value *, int);
+value *valLogicAndOr (value *, value *, int);
+value *valCastLiteral (sym_link *, double);
+value *valueFromLit (double);
+initList *newiList (int, void *);
+initList *revinit (initList *);
+initList *copyIlist (initList *);
+double list2int (initList *);
+value *list2val (initList *);
+struct ast *list2expr (initList *);
+void resolveIvalSym (initList *, sym_link *);
+value *valFromType (sym_link *);
+value *constFloatVal (const char *);
+value *constFixed16x16Val (const char *);
+int getNelements (sym_link *, initList *);
+value *valForArray (struct ast *);
+value *valForStructElem (struct ast *, struct ast *);
+value *valForCastAggr (struct ast *, sym_link *, struct ast *, int);
+value *valForCastArr (struct ast * , sym_link *);
+bool convertIListToConstList(initList *src, literalList **lList, int size);
+literalList *copyLiteralList(literalList *src);
#endif
projects / fw / sdcc / blobdiff