AbstractInterpreter::MethodKind AbstractInterpreter::method_kind(methodHandle m) {
// Abstract method?
if (m->is_abstract()) return abstract;
// Invoker for method handles?
if (m->is_method_handle_invoke()) return method_handle;
// Native method?
// Note: This test must come _before_ the test for intrinsic
// methods. See also comments below.
if (m->is_native()) {
assert(!m->is_method_handle_invoke(), "overlapping bits here, watch out");
return m->is_synchronized() ? native_synchronized : native;
}
// Synchronized?
if (m->is_synchronized()) {
return zerolocals_synchronized;
}
if (RegisterFinalizersAtInit && m->code_size() == 1 &&
m->intrinsic_id() == vmIntrinsics::_Object_init) {
// We need to execute the special return bytecode to check for
// finalizer registration so create a normal frame.
return zerolocals;
}
// Empty method?
if (m->is_empty_method()) {
return empty;
}
// Special intrinsic method?
// Note: This test must come _after_ the test for native methods,
// otherwise we will run into problems with JDK 1.2, see also
// AbstractInterpreterGenerator::generate_method_entry() for
// for details.
switch (m->intrinsic_id()) {
case vmIntrinsics::_dsin : return java_lang_math_sin ;
case vmIntrinsics::_dcos : return java_lang_math_cos ;
case vmIntrinsics::_dtan : return java_lang_math_tan ;
case vmIntrinsics::_dabs : return java_lang_math_abs ;
case vmIntrinsics::_dsqrt : return java_lang_math_sqrt ;
case vmIntrinsics::_dlog : return java_lang_math_log ;
case vmIntrinsics::_dlog10: return java_lang_math_log10;
case vmIntrinsics::_Reference_get:
return java_lang_ref_reference_get;
}
// Accessor method?
if (m->is_accessor()) {
assert(m->size_of_parameters() == 1, "fast code for accessors assumes parameter size = 1");
return accessor;
}
// Note: for now: zero locals for all non-empty methods
return zerolocals;
}
// Check all the formats of native implementation name to see if there is one
// for the specified method.
address NativeLookup::lookup_critical_entry(methodHandle method) {
if (!CriticalJNINatives) return NULL;
if (method->is_synchronized() ||
!method->is_static()) {
// Only static non-synchronized methods are allowed
return NULL;
}
ResourceMark rm;
address entry = NULL;
Symbol* signature = method->signature();
for (int end = 0; end < signature->utf8_length(); end++) {
if (signature->byte_at(end) == 'L') {
// Don't allow object types
return NULL;
}
}
// Compute critical name
char* critical_name = critical_jni_name(method);
// Compute argument size
int args_size = 1 // JNIEnv
+ (method->is_static() ? 1 : 0) // class for static methods
+ method->size_of_parameters(); // actual parameters
// 1) Try JNI short style
entry = lookup_critical_style(method, critical_name, "", args_size, true);
if (entry != NULL) return entry;
// Compute long name
char* long_name = long_jni_name(method);
// 2) Try JNI long style
entry = lookup_critical_style(method, critical_name, long_name, args_size, true);
if (entry != NULL) return entry;
// 3) Try JNI short style without os prefix/suffix
entry = lookup_critical_style(method, critical_name, "", args_size, false);
if (entry != NULL) return entry;
// 4) Try JNI long style without os prefix/suffix
entry = lookup_critical_style(method, critical_name, long_name, args_size, false);
return entry; // NULL indicates not found
}
bool Compiler::is_intrinsic_supported(const methodHandle& method) {
vmIntrinsics::ID id = method->intrinsic_id();
assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
if (method->is_synchronized()) {
// C1 does not support intrinsification of synchronized methods.
return false;
}
switch (id) {
case vmIntrinsics::_compareAndSwapLong:
if (!VM_Version::supports_cx8()) return false;
break;
case vmIntrinsics::_getAndAddInt:
if (!VM_Version::supports_atomic_getadd4()) return false;
break;
case vmIntrinsics::_getAndAddLong:
if (!VM_Version::supports_atomic_getadd8()) return false;
break;
case vmIntrinsics::_getAndSetInt:
if (!VM_Version::supports_atomic_getset4()) return false;
break;
case vmIntrinsics::_getAndSetLong:
if (!VM_Version::supports_atomic_getset8()) return false;
break;
case vmIntrinsics::_getAndSetObject:
#ifdef _LP64
if (!UseCompressedOops && !VM_Version::supports_atomic_getset8()) return false;
if (UseCompressedOops && !VM_Version::supports_atomic_getset4()) return false;
#else
if (!VM_Version::supports_atomic_getset4()) return false;
#endif
break;
case vmIntrinsics::_arraycopy:
case vmIntrinsics::_currentTimeMillis:
case vmIntrinsics::_nanoTime:
case vmIntrinsics::_Reference_get:
// Use the intrinsic version of Reference.get() so that the value in
// the referent field can be registered by the G1 pre-barrier code.
// Also to prevent commoning reads from this field across safepoint
// since GC can change its value.
case vmIntrinsics::_loadFence:
case vmIntrinsics::_storeFence:
case vmIntrinsics::_fullFence:
case vmIntrinsics::_floatToRawIntBits:
case vmIntrinsics::_intBitsToFloat:
case vmIntrinsics::_doubleToRawLongBits:
case vmIntrinsics::_longBitsToDouble:
case vmIntrinsics::_getClass:
case vmIntrinsics::_isInstance:
case vmIntrinsics::_currentThread:
case vmIntrinsics::_dabs:
case vmIntrinsics::_dsqrt:
case vmIntrinsics::_dsin:
case vmIntrinsics::_dcos:
case vmIntrinsics::_dtan:
case vmIntrinsics::_dlog:
case vmIntrinsics::_dlog10:
case vmIntrinsics::_dexp:
case vmIntrinsics::_dpow:
case vmIntrinsics::_getObject:
case vmIntrinsics::_getBoolean:
case vmIntrinsics::_getByte:
case vmIntrinsics::_getShort:
case vmIntrinsics::_getChar:
case vmIntrinsics::_getInt:
case vmIntrinsics::_getLong:
case vmIntrinsics::_getFloat:
case vmIntrinsics::_getDouble:
case vmIntrinsics::_putObject:
case vmIntrinsics::_putBoolean:
case vmIntrinsics::_putByte:
case vmIntrinsics::_putShort:
case vmIntrinsics::_putChar:
case vmIntrinsics::_putInt:
case vmIntrinsics::_putLong:
case vmIntrinsics::_putFloat:
case vmIntrinsics::_putDouble:
case vmIntrinsics::_getObjectVolatile:
case vmIntrinsics::_getBooleanVolatile:
case vmIntrinsics::_getByteVolatile:
case vmIntrinsics::_getShortVolatile:
case vmIntrinsics::_getCharVolatile:
case vmIntrinsics::_getIntVolatile:
case vmIntrinsics::_getLongVolatile:
case vmIntrinsics::_getFloatVolatile:
case vmIntrinsics::_getDoubleVolatile:
case vmIntrinsics::_putObjectVolatile:
case vmIntrinsics::_putBooleanVolatile:
case vmIntrinsics::_putByteVolatile:
case vmIntrinsics::_putShortVolatile:
case vmIntrinsics::_putCharVolatile:
case vmIntrinsics::_putIntVolatile:
case vmIntrinsics::_putLongVolatile:
case vmIntrinsics::_putFloatVolatile:
case vmIntrinsics::_putDoubleVolatile:
case vmIntrinsics::_getByte_raw:
case vmIntrinsics::_getShort_raw:
case vmIntrinsics::_getChar_raw:
case vmIntrinsics::_getInt_raw:
case vmIntrinsics::_getLong_raw:
case vmIntrinsics::_getFloat_raw:
case vmIntrinsics::_getDouble_raw:
case vmIntrinsics::_putByte_raw:
case vmIntrinsics::_putShort_raw:
case vmIntrinsics::_putChar_raw:
case vmIntrinsics::_putInt_raw:
case vmIntrinsics::_putLong_raw:
case vmIntrinsics::_putFloat_raw:
case vmIntrinsics::_putDouble_raw:
case vmIntrinsics::_putOrderedObject:
case vmIntrinsics::_putOrderedInt:
case vmIntrinsics::_putOrderedLong:
case vmIntrinsics::_getShortUnaligned:
case vmIntrinsics::_getCharUnaligned:
case vmIntrinsics::_getIntUnaligned:
case vmIntrinsics::_getLongUnaligned:
case vmIntrinsics::_putShortUnaligned:
case vmIntrinsics::_putCharUnaligned:
case vmIntrinsics::_putIntUnaligned:
case vmIntrinsics::_putLongUnaligned:
case vmIntrinsics::_checkIndex:
case vmIntrinsics::_updateCRC32:
case vmIntrinsics::_updateBytesCRC32:
case vmIntrinsics::_updateByteBufferCRC32:
case vmIntrinsics::_compareAndSwapInt:
case vmIntrinsics::_compareAndSwapObject:
case vmIntrinsics::_getCharStringU:
case vmIntrinsics::_putCharStringU:
#ifdef TRACE_HAVE_INTRINSICS
case vmIntrinsics::_classID:
case vmIntrinsics::_threadID:
case vmIntrinsics::_counterTime:
#endif
break;
default:
return false; // Intrinsics not on the previous list are not available.
}
return true;
}
AbstractInterpreter::MethodKind AbstractInterpreter::method_kind(methodHandle m) {
// Abstract method?
if (m->is_abstract()) return abstract;
// Method handle primitive?
if (m->is_method_handle_intrinsic()) {
vmIntrinsics::ID id = m->intrinsic_id();
assert(MethodHandles::is_signature_polymorphic(id), "must match an intrinsic");
MethodKind kind = (MethodKind)( method_handle_invoke_FIRST +
((int)id - vmIntrinsics::FIRST_MH_SIG_POLY) );
assert(kind <= method_handle_invoke_LAST, "parallel enum ranges");
return kind;
}
#ifndef CC_INTERP
if (UseCRC32Intrinsics && m->is_native()) {
// Use optimized stub code for CRC32 native methods.
switch (m->intrinsic_id()) {
case vmIntrinsics::_updateCRC32 : return java_util_zip_CRC32_update;
case vmIntrinsics::_updateBytesCRC32 : return java_util_zip_CRC32_updateBytes;
case vmIntrinsics::_updateByteBufferCRC32 : return java_util_zip_CRC32_updateByteBuffer;
}
}
#endif
// Native method?
// Note: This test must come _before_ the test for intrinsic
// methods. See also comments below.
if (m->is_native()) {
assert(!m->is_method_handle_intrinsic(), "overlapping bits here, watch out");
return m->is_synchronized() ? native_synchronized : native;
}
// Synchronized?
if (m->is_synchronized()) {
return zerolocals_synchronized;
}
if (RegisterFinalizersAtInit && m->code_size() == 1 &&
m->intrinsic_id() == vmIntrinsics::_Object_init) {
// We need to execute the special return bytecode to check for
// finalizer registration so create a normal frame.
return zerolocals;
}
// Empty method?
if (m->is_empty_method()) {
return empty;
}
// Special intrinsic method?
// Note: This test must come _after_ the test for native methods,
// otherwise we will run into problems with JDK 1.2, see also
// InterpreterGenerator::generate_method_entry() for
// for details.
switch (m->intrinsic_id()) {
case vmIntrinsics::_dsin : return java_lang_math_sin ;
case vmIntrinsics::_dcos : return java_lang_math_cos ;
case vmIntrinsics::_dtan : return java_lang_math_tan ;
case vmIntrinsics::_dabs : return java_lang_math_abs ;
case vmIntrinsics::_dsqrt : return java_lang_math_sqrt ;
case vmIntrinsics::_dlog : return java_lang_math_log ;
case vmIntrinsics::_dlog10: return java_lang_math_log10;
case vmIntrinsics::_dpow : return java_lang_math_pow ;
case vmIntrinsics::_dexp : return java_lang_math_exp ;
case vmIntrinsics::_Reference_get:
return java_lang_ref_reference_get;
}
// Accessor method?
if (m->is_accessor()) {
assert(m->size_of_parameters() == 1, "fast code for accessors assumes parameter size = 1");
return accessor;
}
// Note: for now: zero locals for all non-empty methods
return zerolocals;
}