1241 // The goal of this code to avoid undefined or implementation-defined
1242 // behavior.  The use of an lvalue to reference cast is explicitly
1243 // permitted by Lvalues and rvalues [basic.lval].  [Section 3.10 Para
1244 // 15 in C++03]
1245 #define JAVA_INTEGER_OP(OP, NAME, TYPE, UNSIGNED_TYPE)  \
1246 inline TYPE NAME (TYPE in1, TYPE in2) {                 \
1247   UNSIGNED_TYPE ures = static_cast<UNSIGNED_TYPE>(in1); \
1248   ures OP ## = static_cast<UNSIGNED_TYPE>(in2);         \
1249   return reinterpret_cast<TYPE&>(ures);                 \
1250 }
1251 
1252 JAVA_INTEGER_OP(+, java_add, jint, juint)
1253 JAVA_INTEGER_OP(-, java_subtract, jint, juint)
1254 JAVA_INTEGER_OP(*, java_multiply, jint, juint)
1255 JAVA_INTEGER_OP(+, java_add, jlong, julong)
1256 JAVA_INTEGER_OP(-, java_subtract, jlong, julong)
1257 JAVA_INTEGER_OP(*, java_multiply, jlong, julong)
1258 
1259 #undef JAVA_INTEGER_OP
1260 








1261 // Dereference vptr
1262 // All C++ compilers that we know of have the vtbl pointer in the first
1263 // word.  If there are exceptions, this function needs to be made compiler
1264 // specific.
1265 static inline void* dereference_vptr(const void* addr) {
1266   return *(void**)addr;
1267 }
1268 
1269 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_HPP

1241 // The goal of this code to avoid undefined or implementation-defined
1242 // behavior.  The use of an lvalue to reference cast is explicitly
1243 // permitted by Lvalues and rvalues [basic.lval].  [Section 3.10 Para
1244 // 15 in C++03]
1245 #define JAVA_INTEGER_OP(OP, NAME, TYPE, UNSIGNED_TYPE)  \
1246 inline TYPE NAME (TYPE in1, TYPE in2) {                 \
1247   UNSIGNED_TYPE ures = static_cast<UNSIGNED_TYPE>(in1); \
1248   ures OP ## = static_cast<UNSIGNED_TYPE>(in2);         \
1249   return reinterpret_cast<TYPE&>(ures);                 \
1250 }
1251 
1252 JAVA_INTEGER_OP(+, java_add, jint, juint)
1253 JAVA_INTEGER_OP(-, java_subtract, jint, juint)
1254 JAVA_INTEGER_OP(*, java_multiply, jint, juint)
1255 JAVA_INTEGER_OP(+, java_add, jlong, julong)
1256 JAVA_INTEGER_OP(-, java_subtract, jlong, julong)
1257 JAVA_INTEGER_OP(*, java_multiply, jlong, julong)
1258 
1259 #undef JAVA_INTEGER_OP
1260 
1261 #ifdef _WINDOWS
1262 // Overloading to match (int, int) to (jint, jint)
1263 // because windows jint is type long
1264 inline jint java_add(int in1, int in2) {
1265   return java_add((jint)in1, (jint)in2);
1266 }
1267 #endif
1268 
1269 // Dereference vptr
1270 // All C++ compilers that we know of have the vtbl pointer in the first
1271 // word.  If there are exceptions, this function needs to be made compiler
1272 // specific.
1273 static inline void* dereference_vptr(const void* addr) {
1274   return *(void**)addr;
1275 }
1276 
1277 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_HPP