--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/classfile/vmSymbols.cpp Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,1041 @@
+/*
+ * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "classfile/vmSymbols.hpp"
+#include "compiler/compilerDirectives.hpp"
+#include "memory/oopFactory.hpp"
+#include "memory/metaspaceClosure.hpp"
+#include "oops/oop.inline.hpp"
+#include "prims/jvm.h"
+#include "runtime/handles.inline.hpp"
+#include "utilities/xmlstream.hpp"
+
+
+Symbol* vmSymbols::_symbols[vmSymbols::SID_LIMIT];
+
+Symbol* vmSymbols::_type_signatures[T_VOID+1] = { NULL /*, NULL...*/ };
+
+inline int compare_symbol(const Symbol* a, const Symbol* b) {
+ if (a == b) return 0;
+ // follow the natural address order:
+ return (address)a > (address)b ? +1 : -1;
+}
+
+static vmSymbols::SID vm_symbol_index[vmSymbols::SID_LIMIT];
+extern "C" {
+ static int compare_vmsymbol_sid(const void* void_a, const void* void_b) {
+ const Symbol* a = vmSymbols::symbol_at(*((vmSymbols::SID*) void_a));
+ const Symbol* b = vmSymbols::symbol_at(*((vmSymbols::SID*) void_b));
+ return compare_symbol(a, b);
+ }
+}
+
+#ifdef ASSERT
+#define VM_SYMBOL_ENUM_NAME_BODY(name, string) #name "\0"
+static const char* vm_symbol_enum_names =
+ VM_SYMBOLS_DO(VM_SYMBOL_ENUM_NAME_BODY, VM_ALIAS_IGNORE)
+ "\0";
+static const char* vm_symbol_enum_name(vmSymbols::SID sid) {
+ const char* string = &vm_symbol_enum_names[0];
+ int skip = (int)sid - (int)vmSymbols::FIRST_SID;
+ for (; skip != 0; skip--) {
+ size_t skiplen = strlen(string);
+ if (skiplen == 0) return "<unknown>"; // overflow
+ string += skiplen+1;
+ }
+ return string;
+}
+#endif //ASSERT
+
+// Put all the VM symbol strings in one place.
+// Makes for a more compact libjvm.
+#define VM_SYMBOL_BODY(name, string) string "\0"
+static const char* vm_symbol_bodies = VM_SYMBOLS_DO(VM_SYMBOL_BODY, VM_ALIAS_IGNORE);
+
+void vmSymbols::initialize(TRAPS) {
+ assert((int)SID_LIMIT <= (1<<log2_SID_LIMIT), "must fit in this bitfield");
+ assert((int)SID_LIMIT*5 > (1<<log2_SID_LIMIT), "make the bitfield smaller, please");
+ assert(vmIntrinsics::FLAG_LIMIT <= (1 << vmIntrinsics::log2_FLAG_LIMIT), "must fit in this bitfield");
+
+ if (!UseSharedSpaces) {
+ const char* string = &vm_symbol_bodies[0];
+ for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) {
+ Symbol* sym = SymbolTable::new_permanent_symbol(string, CHECK);
+ _symbols[index] = sym;
+ string += strlen(string); // skip string body
+ string += 1; // skip trailing null
+ }
+
+ _type_signatures[T_BYTE] = byte_signature();
+ _type_signatures[T_CHAR] = char_signature();
+ _type_signatures[T_DOUBLE] = double_signature();
+ _type_signatures[T_FLOAT] = float_signature();
+ _type_signatures[T_INT] = int_signature();
+ _type_signatures[T_LONG] = long_signature();
+ _type_signatures[T_SHORT] = short_signature();
+ _type_signatures[T_BOOLEAN] = bool_signature();
+ _type_signatures[T_VOID] = void_signature();
+ // no single signatures for T_OBJECT or T_ARRAY
+ }
+
+#ifdef ASSERT
+ // Check for duplicates:
+ for (int i1 = (int)FIRST_SID; i1 < (int)SID_LIMIT; i1++) {
+ Symbol* sym = symbol_at((SID)i1);
+ for (int i2 = (int)FIRST_SID; i2 < i1; i2++) {
+ if (symbol_at((SID)i2) == sym) {
+ tty->print("*** Duplicate VM symbol SIDs %s(%d) and %s(%d): \"",
+ vm_symbol_enum_name((SID)i2), i2,
+ vm_symbol_enum_name((SID)i1), i1);
+ sym->print_symbol_on(tty);
+ tty->print_cr("\"");
+ }
+ }
+ }
+#endif //ASSERT
+
+ // Create an index for find_id:
+ {
+ for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) {
+ vm_symbol_index[index] = (SID)index;
+ }
+ int num_sids = SID_LIMIT-FIRST_SID;
+ qsort(&vm_symbol_index[FIRST_SID], num_sids, sizeof(vm_symbol_index[0]),
+ compare_vmsymbol_sid);
+ }
+
+#ifdef ASSERT
+ {
+ // Spot-check correspondence between strings, symbols, and enums:
+ assert(_symbols[NO_SID] == NULL, "must be");
+ const char* str = "java/lang/Object";
+ TempNewSymbol jlo = SymbolTable::new_permanent_symbol(str, CHECK);
+ assert(strncmp(str, (char*)jlo->base(), jlo->utf8_length()) == 0, "");
+ assert(jlo == java_lang_Object(), "");
+ SID sid = VM_SYMBOL_ENUM_NAME(java_lang_Object);
+ assert(find_sid(jlo) == sid, "");
+ assert(symbol_at(sid) == jlo, "");
+
+ // Make sure find_sid produces the right answer in each case.
+ for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) {
+ Symbol* sym = symbol_at((SID)index);
+ sid = find_sid(sym);
+ assert(sid == (SID)index, "symbol index works");
+ // Note: If there are duplicates, this assert will fail.
+ // A "Duplicate VM symbol" message will have already been printed.
+ }
+
+ // The string "format" happens (at the moment) not to be a vmSymbol,
+ // though it is a method name in java.lang.String.
+ str = "format";
+ TempNewSymbol fmt = SymbolTable::new_permanent_symbol(str, CHECK);
+ sid = find_sid(fmt);
+ assert(sid == NO_SID, "symbol index works (negative test)");
+ }
+#endif
+}
+
+
+#ifndef PRODUCT
+const char* vmSymbols::name_for(vmSymbols::SID sid) {
+ if (sid == NO_SID)
+ return "NO_SID";
+ const char* string = &vm_symbol_bodies[0];
+ for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) {
+ if (index == (int)sid)
+ return string;
+ string += strlen(string); // skip string body
+ string += 1; // skip trailing null
+ }
+ return "BAD_SID";
+}
+#endif
+
+
+
+void vmSymbols::symbols_do(SymbolClosure* f) {
+ for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) {
+ f->do_symbol(&_symbols[index]);
+ }
+ for (int i = 0; i < T_VOID+1; i++) {
+ f->do_symbol(&_type_signatures[i]);
+ }
+}
+
+void vmSymbols::metaspace_pointers_do(MetaspaceClosure *it) {
+ for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) {
+ it->push(&_symbols[index]);
+ }
+ for (int i = 0; i < T_VOID+1; i++) {
+ it->push(&_type_signatures[i]);
+ }
+}
+
+void vmSymbols::serialize(SerializeClosure* soc) {
+ soc->do_region((u_char*)&_symbols[FIRST_SID],
+ (SID_LIMIT - FIRST_SID) * sizeof(_symbols[0]));
+ soc->do_region((u_char*)_type_signatures, sizeof(_type_signatures));
+}
+
+
+BasicType vmSymbols::signature_type(const Symbol* s) {
+ assert(s != NULL, "checking");
+ for (int i = T_BOOLEAN; i < T_VOID+1; i++) {
+ if (s == _type_signatures[i]) {
+ return (BasicType)i;
+ }
+ }
+ return T_OBJECT;
+}
+
+
+static int mid_hint = (int)vmSymbols::FIRST_SID+1;
+
+#ifndef PRODUCT
+static int find_sid_calls, find_sid_probes;
+// (Typical counts are calls=7000 and probes=17000.)
+#endif
+
+vmSymbols::SID vmSymbols::find_sid(const Symbol* symbol) {
+ // Handle the majority of misses by a bounds check.
+ // Then, use a binary search over the index.
+ // Expected trip count is less than log2_SID_LIMIT, about eight.
+ // This is slow but acceptable, given that calls are not
+ // dynamically common. (Method*::intrinsic_id has a cache.)
+ NOT_PRODUCT(find_sid_calls++);
+ int min = (int)FIRST_SID, max = (int)SID_LIMIT - 1;
+ SID sid = NO_SID, sid1;
+ int cmp1;
+ sid1 = vm_symbol_index[min];
+ cmp1 = compare_symbol(symbol, symbol_at(sid1));
+ if (cmp1 <= 0) { // before the first
+ if (cmp1 == 0) sid = sid1;
+ } else {
+ sid1 = vm_symbol_index[max];
+ cmp1 = compare_symbol(symbol, symbol_at(sid1));
+ if (cmp1 >= 0) { // after the last
+ if (cmp1 == 0) sid = sid1;
+ } else {
+ // After checking the extremes, do a binary search.
+ ++min; --max; // endpoints are done
+ int mid = mid_hint; // start at previous success
+ while (max >= min) {
+ assert(mid >= min && mid <= max, "");
+ NOT_PRODUCT(find_sid_probes++);
+ sid1 = vm_symbol_index[mid];
+ cmp1 = compare_symbol(symbol, symbol_at(sid1));
+ if (cmp1 == 0) {
+ mid_hint = mid;
+ sid = sid1;
+ break;
+ }
+ if (cmp1 < 0)
+ max = mid - 1; // symbol < symbol_at(sid)
+ else
+ min = mid + 1;
+
+ // Pick a new probe point:
+ mid = (max + min) / 2;
+ }
+ }
+ }
+
+#ifdef ASSERT
+ // Perform the exhaustive self-check the first 1000 calls,
+ // and every 100 calls thereafter.
+ static int find_sid_check_count = -2000;
+ if ((uint)++find_sid_check_count > (uint)100) {
+ if (find_sid_check_count > 0) find_sid_check_count = 0;
+
+ // Make sure this is the right answer, using linear search.
+ // (We have already proven that there are no duplicates in the list.)
+ SID sid2 = NO_SID;
+ for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) {
+ Symbol* sym2 = symbol_at((SID)index);
+ if (sym2 == symbol) {
+ sid2 = (SID)index;
+ break;
+ }
+ }
+ // Unless it's a duplicate, assert that the sids are the same.
+ if (_symbols[sid] != _symbols[sid2]) {
+ assert(sid == sid2, "binary same as linear search");
+ }
+ }
+#endif //ASSERT
+
+ return sid;
+}
+
+vmSymbols::SID vmSymbols::find_sid(const char* symbol_name) {
+ Symbol* symbol = SymbolTable::probe(symbol_name, (int) strlen(symbol_name));
+ if (symbol == NULL) return NO_SID;
+ return find_sid(symbol);
+}
+
+static vmIntrinsics::ID wrapper_intrinsic(BasicType type, bool unboxing) {
+#define TYPE2(type, unboxing) ((int)(type)*2 + ((unboxing) ? 1 : 0))
+ switch (TYPE2(type, unboxing)) {
+#define BASIC_TYPE_CASE(type, box, unbox) \
+ case TYPE2(type, false): return vmIntrinsics::box; \
+ case TYPE2(type, true): return vmIntrinsics::unbox
+ BASIC_TYPE_CASE(T_BOOLEAN, _Boolean_valueOf, _booleanValue);
+ BASIC_TYPE_CASE(T_BYTE, _Byte_valueOf, _byteValue);
+ BASIC_TYPE_CASE(T_CHAR, _Character_valueOf, _charValue);
+ BASIC_TYPE_CASE(T_SHORT, _Short_valueOf, _shortValue);
+ BASIC_TYPE_CASE(T_INT, _Integer_valueOf, _intValue);
+ BASIC_TYPE_CASE(T_LONG, _Long_valueOf, _longValue);
+ BASIC_TYPE_CASE(T_FLOAT, _Float_valueOf, _floatValue);
+ BASIC_TYPE_CASE(T_DOUBLE, _Double_valueOf, _doubleValue);
+#undef BASIC_TYPE_CASE
+ }
+#undef TYPE2
+ return vmIntrinsics::_none;
+}
+
+vmIntrinsics::ID vmIntrinsics::for_boxing(BasicType type) {
+ return wrapper_intrinsic(type, false);
+}
+vmIntrinsics::ID vmIntrinsics::for_unboxing(BasicType type) {
+ return wrapper_intrinsic(type, true);
+}
+
+vmIntrinsics::ID vmIntrinsics::for_raw_conversion(BasicType src, BasicType dest) {
+#define SRC_DEST(s,d) (((int)(s) << 4) + (int)(d))
+ switch (SRC_DEST(src, dest)) {
+ case SRC_DEST(T_INT, T_FLOAT): return vmIntrinsics::_intBitsToFloat;
+ case SRC_DEST(T_FLOAT, T_INT): return vmIntrinsics::_floatToRawIntBits;
+
+ case SRC_DEST(T_LONG, T_DOUBLE): return vmIntrinsics::_longBitsToDouble;
+ case SRC_DEST(T_DOUBLE, T_LONG): return vmIntrinsics::_doubleToRawLongBits;
+ }
+#undef SRC_DEST
+
+ return vmIntrinsics::_none;
+}
+
+bool vmIntrinsics::preserves_state(vmIntrinsics::ID id) {
+ assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
+ switch(id) {
+#ifdef TRACE_HAVE_INTRINSICS
+ case vmIntrinsics::_counterTime:
+#endif
+ case vmIntrinsics::_currentTimeMillis:
+ case vmIntrinsics::_nanoTime:
+ 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::_checkIndex:
+ case vmIntrinsics::_Reference_get:
+ case vmIntrinsics::_updateCRC32:
+ case vmIntrinsics::_updateBytesCRC32:
+ case vmIntrinsics::_updateByteBufferCRC32:
+ case vmIntrinsics::_vectorizedMismatch:
+ case vmIntrinsics::_fmaD:
+ case vmIntrinsics::_fmaF:
+ return true;
+ default:
+ return false;
+ }
+}
+
+bool vmIntrinsics::can_trap(vmIntrinsics::ID id) {
+ assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
+ switch(id) {
+#ifdef TRACE_HAVE_INTRINSICS
+ case vmIntrinsics::_counterTime:
+ case vmIntrinsics::_getClassId:
+#endif
+ case vmIntrinsics::_currentTimeMillis:
+ case vmIntrinsics::_nanoTime:
+ case vmIntrinsics::_floatToRawIntBits:
+ case vmIntrinsics::_intBitsToFloat:
+ case vmIntrinsics::_doubleToRawLongBits:
+ case vmIntrinsics::_longBitsToDouble:
+ 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::_updateCRC32:
+ case vmIntrinsics::_updateBytesCRC32:
+ case vmIntrinsics::_updateByteBufferCRC32:
+ case vmIntrinsics::_vectorizedMismatch:
+ case vmIntrinsics::_fmaD:
+ case vmIntrinsics::_fmaF:
+ return false;
+ default:
+ return true;
+ }
+}
+
+// Some intrinsics produce different results if they are not pinned
+bool vmIntrinsics::should_be_pinned(vmIntrinsics::ID id) {
+ assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
+ switch(id) {
+#ifdef TRACE_HAVE_INTRINSICS
+ case vmIntrinsics::_counterTime:
+#endif
+ case vmIntrinsics::_currentTimeMillis:
+ case vmIntrinsics::_nanoTime:
+ return true;
+ default:
+ return false;
+ }
+}
+
+bool vmIntrinsics::does_virtual_dispatch(vmIntrinsics::ID id) {
+ assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
+ switch(id) {
+ case vmIntrinsics::_hashCode:
+ case vmIntrinsics::_clone:
+ return true;
+ break;
+ default:
+ return false;
+ }
+}
+
+int vmIntrinsics::predicates_needed(vmIntrinsics::ID id) {
+ assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
+ switch (id) {
+ case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt:
+ case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt:
+ case vmIntrinsics::_counterMode_AESCrypt:
+ return 1;
+ case vmIntrinsics::_digestBase_implCompressMB:
+ return 3;
+ default:
+ return 0;
+ }
+}
+
+bool vmIntrinsics::is_intrinsic_available(vmIntrinsics::ID id) {
+ return !vmIntrinsics::is_intrinsic_disabled(id) &&
+ !vmIntrinsics::is_disabled_by_flags(id);
+}
+
+bool vmIntrinsics::is_intrinsic_disabled(vmIntrinsics::ID id) {
+ assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
+
+ // Canonicalize DisableIntrinsic to contain only ',' as a separator.
+ // Note, DirectiveSet may not be created at this point yet since this code
+ // is called from initial stub geenration code.
+ char* local_list = (char*)DirectiveSet::canonicalize_disableintrinsic(DisableIntrinsic);
+
+ bool found = false;
+ char* token = strtok(local_list, ",");
+ while (token != NULL) {
+ if (strcmp(token, vmIntrinsics::name_at(id)) == 0) {
+ found = true;
+ break;
+ } else {
+ token = strtok(NULL, ",");
+ }
+ }
+
+ FREE_C_HEAP_ARRAY(char, local_list);
+ return found;
+}
+
+
+bool vmIntrinsics::is_disabled_by_flags(const methodHandle& method) {
+ vmIntrinsics::ID id = method->intrinsic_id();
+ assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
+ return is_disabled_by_flags(id);
+}
+
+bool vmIntrinsics::is_disabled_by_flags(vmIntrinsics::ID id) {
+ assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
+
+ // -XX:-InlineNatives disables nearly all intrinsics except the ones listed in
+ // the following switch statement.
+ if (!InlineNatives) {
+ switch (id) {
+ case vmIntrinsics::_indexOfL:
+ case vmIntrinsics::_indexOfU:
+ case vmIntrinsics::_indexOfUL:
+ case vmIntrinsics::_indexOfIL:
+ case vmIntrinsics::_indexOfIU:
+ case vmIntrinsics::_indexOfIUL:
+ case vmIntrinsics::_indexOfU_char:
+ case vmIntrinsics::_compareToL:
+ case vmIntrinsics::_compareToU:
+ case vmIntrinsics::_compareToLU:
+ case vmIntrinsics::_compareToUL:
+ case vmIntrinsics::_equalsL:
+ case vmIntrinsics::_equalsU:
+ case vmIntrinsics::_equalsC:
+ case vmIntrinsics::_getCharStringU:
+ case vmIntrinsics::_putCharStringU:
+ case vmIntrinsics::_compressStringC:
+ case vmIntrinsics::_compressStringB:
+ case vmIntrinsics::_inflateStringC:
+ case vmIntrinsics::_inflateStringB:
+ case vmIntrinsics::_getAndAddInt:
+ case vmIntrinsics::_getAndAddLong:
+ case vmIntrinsics::_getAndSetInt:
+ case vmIntrinsics::_getAndSetLong:
+ case vmIntrinsics::_getAndSetObject:
+ case vmIntrinsics::_loadFence:
+ case vmIntrinsics::_storeFence:
+ case vmIntrinsics::_fullFence:
+ case vmIntrinsics::_hasNegatives:
+ case vmIntrinsics::_Reference_get:
+ break;
+ default:
+ return true;
+ }
+ }
+
+ switch (id) {
+ case vmIntrinsics::_isInstance:
+ case vmIntrinsics::_isAssignableFrom:
+ case vmIntrinsics::_getModifiers:
+ case vmIntrinsics::_isInterface:
+ case vmIntrinsics::_isArray:
+ case vmIntrinsics::_isPrimitive:
+ case vmIntrinsics::_getSuperclass:
+ case vmIntrinsics::_Class_cast:
+ case vmIntrinsics::_getLength:
+ case vmIntrinsics::_newArray:
+ case vmIntrinsics::_getClass:
+ if (!InlineClassNatives) return true;
+ break;
+ case vmIntrinsics::_currentThread:
+ case vmIntrinsics::_isInterrupted:
+ if (!InlineThreadNatives) return true;
+ break;
+ case vmIntrinsics::_floatToRawIntBits:
+ case vmIntrinsics::_intBitsToFloat:
+ case vmIntrinsics::_doubleToRawLongBits:
+ case vmIntrinsics::_longBitsToDouble:
+ case vmIntrinsics::_dabs:
+ case vmIntrinsics::_dsqrt:
+ case vmIntrinsics::_dsin:
+ case vmIntrinsics::_dcos:
+ case vmIntrinsics::_dtan:
+ case vmIntrinsics::_dlog:
+ case vmIntrinsics::_dexp:
+ case vmIntrinsics::_dpow:
+ case vmIntrinsics::_dlog10:
+ case vmIntrinsics::_datan2:
+ case vmIntrinsics::_min:
+ case vmIntrinsics::_max:
+ case vmIntrinsics::_floatToIntBits:
+ case vmIntrinsics::_doubleToLongBits:
+ if (!InlineMathNatives) return true;
+ break;
+ case vmIntrinsics::_fmaD:
+ case vmIntrinsics::_fmaF:
+ if (!InlineMathNatives || !UseFMA) return true;
+ break;
+ case vmIntrinsics::_arraycopy:
+ if (!InlineArrayCopy) return true;
+ break;
+ case vmIntrinsics::_updateCRC32:
+ case vmIntrinsics::_updateBytesCRC32:
+ case vmIntrinsics::_updateByteBufferCRC32:
+ if (!UseCRC32Intrinsics) return true;
+ break;
+ 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::_getObjectAcquire:
+ case vmIntrinsics::_getBooleanAcquire:
+ case vmIntrinsics::_getByteAcquire:
+ case vmIntrinsics::_getShortAcquire:
+ case vmIntrinsics::_getCharAcquire:
+ case vmIntrinsics::_getIntAcquire:
+ case vmIntrinsics::_getLongAcquire:
+ case vmIntrinsics::_getFloatAcquire:
+ case vmIntrinsics::_getDoubleAcquire:
+ case vmIntrinsics::_putObjectRelease:
+ case vmIntrinsics::_putBooleanRelease:
+ case vmIntrinsics::_putByteRelease:
+ case vmIntrinsics::_putShortRelease:
+ case vmIntrinsics::_putCharRelease:
+ case vmIntrinsics::_putIntRelease:
+ case vmIntrinsics::_putLongRelease:
+ case vmIntrinsics::_putFloatRelease:
+ case vmIntrinsics::_putDoubleRelease:
+ case vmIntrinsics::_getObjectOpaque:
+ case vmIntrinsics::_getBooleanOpaque:
+ case vmIntrinsics::_getByteOpaque:
+ case vmIntrinsics::_getShortOpaque:
+ case vmIntrinsics::_getCharOpaque:
+ case vmIntrinsics::_getIntOpaque:
+ case vmIntrinsics::_getLongOpaque:
+ case vmIntrinsics::_getFloatOpaque:
+ case vmIntrinsics::_getDoubleOpaque:
+ case vmIntrinsics::_putObjectOpaque:
+ case vmIntrinsics::_putBooleanOpaque:
+ case vmIntrinsics::_putByteOpaque:
+ case vmIntrinsics::_putShortOpaque:
+ case vmIntrinsics::_putCharOpaque:
+ case vmIntrinsics::_putIntOpaque:
+ case vmIntrinsics::_putLongOpaque:
+ case vmIntrinsics::_putFloatOpaque:
+ case vmIntrinsics::_putDoubleOpaque:
+ case vmIntrinsics::_getAndAddInt:
+ case vmIntrinsics::_getAndAddLong:
+ case vmIntrinsics::_getAndSetInt:
+ case vmIntrinsics::_getAndSetLong:
+ case vmIntrinsics::_getAndSetObject:
+ case vmIntrinsics::_loadFence:
+ case vmIntrinsics::_storeFence:
+ case vmIntrinsics::_fullFence:
+ case vmIntrinsics::_compareAndSetLong:
+ case vmIntrinsics::_weakCompareAndSetLong:
+ case vmIntrinsics::_weakCompareAndSetLongPlain:
+ case vmIntrinsics::_weakCompareAndSetLongAcquire:
+ case vmIntrinsics::_weakCompareAndSetLongRelease:
+ case vmIntrinsics::_compareAndSetInt:
+ case vmIntrinsics::_weakCompareAndSetInt:
+ case vmIntrinsics::_weakCompareAndSetIntPlain:
+ case vmIntrinsics::_weakCompareAndSetIntAcquire:
+ case vmIntrinsics::_weakCompareAndSetIntRelease:
+ case vmIntrinsics::_compareAndSetObject:
+ case vmIntrinsics::_weakCompareAndSetObject:
+ case vmIntrinsics::_weakCompareAndSetObjectPlain:
+ case vmIntrinsics::_weakCompareAndSetObjectAcquire:
+ case vmIntrinsics::_weakCompareAndSetObjectRelease:
+ case vmIntrinsics::_compareAndExchangeInt:
+ case vmIntrinsics::_compareAndExchangeIntAcquire:
+ case vmIntrinsics::_compareAndExchangeIntRelease:
+ case vmIntrinsics::_compareAndExchangeLong:
+ case vmIntrinsics::_compareAndExchangeLongAcquire:
+ case vmIntrinsics::_compareAndExchangeLongRelease:
+ case vmIntrinsics::_compareAndExchangeObject:
+ case vmIntrinsics::_compareAndExchangeObjectAcquire:
+ case vmIntrinsics::_compareAndExchangeObjectRelease:
+ if (!InlineUnsafeOps) return true;
+ break;
+ 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::_allocateInstance:
+ if (!InlineUnsafeOps || !UseUnalignedAccesses) return true;
+ break;
+ case vmIntrinsics::_hashCode:
+ if (!InlineObjectHash) return true;
+ break;
+ case vmIntrinsics::_aescrypt_encryptBlock:
+ case vmIntrinsics::_aescrypt_decryptBlock:
+ if (!UseAESIntrinsics) return true;
+ break;
+ case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt:
+ case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt:
+ if (!UseAESIntrinsics) return true;
+ break;
+ case vmIntrinsics::_counterMode_AESCrypt:
+ if (!UseAESCTRIntrinsics) return true;
+ break;
+ case vmIntrinsics::_sha_implCompress:
+ if (!UseSHA1Intrinsics) return true;
+ break;
+ case vmIntrinsics::_sha2_implCompress:
+ if (!UseSHA256Intrinsics) return true;
+ break;
+ case vmIntrinsics::_sha5_implCompress:
+ if (!UseSHA512Intrinsics) return true;
+ break;
+ case vmIntrinsics::_digestBase_implCompressMB:
+ if (!(UseSHA1Intrinsics || UseSHA256Intrinsics || UseSHA512Intrinsics)) return true;
+ break;
+ case vmIntrinsics::_ghash_processBlocks:
+ if (!UseGHASHIntrinsics) return true;
+ break;
+ case vmIntrinsics::_updateBytesCRC32C:
+ case vmIntrinsics::_updateDirectByteBufferCRC32C:
+ if (!UseCRC32CIntrinsics) return true;
+ break;
+ case vmIntrinsics::_vectorizedMismatch:
+ if (!UseVectorizedMismatchIntrinsic) return true;
+ break;
+ case vmIntrinsics::_updateBytesAdler32:
+ case vmIntrinsics::_updateByteBufferAdler32:
+ if (!UseAdler32Intrinsics) return true;
+ break;
+ case vmIntrinsics::_copyMemory:
+ if (!InlineArrayCopy || !InlineUnsafeOps) return true;
+ break;
+#ifdef COMPILER1
+ case vmIntrinsics::_checkIndex:
+ if (!InlineNIOCheckIndex) return true;
+ break;
+#endif // COMPILER1
+#ifdef COMPILER2
+ case vmIntrinsics::_clone:
+ case vmIntrinsics::_copyOf:
+ case vmIntrinsics::_copyOfRange:
+ // These intrinsics use both the objectcopy and the arraycopy
+ // intrinsic mechanism.
+ if (!InlineObjectCopy || !InlineArrayCopy) return true;
+ break;
+ case vmIntrinsics::_compareToL:
+ case vmIntrinsics::_compareToU:
+ case vmIntrinsics::_compareToLU:
+ case vmIntrinsics::_compareToUL:
+ if (!SpecialStringCompareTo) return true;
+ break;
+ case vmIntrinsics::_indexOfL:
+ case vmIntrinsics::_indexOfU:
+ case vmIntrinsics::_indexOfUL:
+ case vmIntrinsics::_indexOfIL:
+ case vmIntrinsics::_indexOfIU:
+ case vmIntrinsics::_indexOfIUL:
+ case vmIntrinsics::_indexOfU_char:
+ if (!SpecialStringIndexOf) return true;
+ break;
+ case vmIntrinsics::_equalsL:
+ case vmIntrinsics::_equalsU:
+ if (!SpecialStringEquals) return true;
+ break;
+ case vmIntrinsics::_equalsB:
+ case vmIntrinsics::_equalsC:
+ if (!SpecialArraysEquals) return true;
+ break;
+ case vmIntrinsics::_encodeISOArray:
+ case vmIntrinsics::_encodeByteISOArray:
+ if (!SpecialEncodeISOArray) return true;
+ break;
+ case vmIntrinsics::_getCallerClass:
+ if (!InlineReflectionGetCallerClass) return true;
+ break;
+ case vmIntrinsics::_multiplyToLen:
+ if (!UseMultiplyToLenIntrinsic) return true;
+ break;
+ case vmIntrinsics::_squareToLen:
+ if (!UseSquareToLenIntrinsic) return true;
+ break;
+ case vmIntrinsics::_mulAdd:
+ if (!UseMulAddIntrinsic) return true;
+ break;
+ case vmIntrinsics::_montgomeryMultiply:
+ if (!UseMontgomeryMultiplyIntrinsic) return true;
+ break;
+ case vmIntrinsics::_montgomerySquare:
+ if (!UseMontgomerySquareIntrinsic) return true;
+ break;
+ case vmIntrinsics::_addExactI:
+ case vmIntrinsics::_addExactL:
+ case vmIntrinsics::_decrementExactI:
+ case vmIntrinsics::_decrementExactL:
+ case vmIntrinsics::_incrementExactI:
+ case vmIntrinsics::_incrementExactL:
+ case vmIntrinsics::_multiplyExactI:
+ case vmIntrinsics::_multiplyExactL:
+ case vmIntrinsics::_negateExactI:
+ case vmIntrinsics::_negateExactL:
+ case vmIntrinsics::_subtractExactI:
+ case vmIntrinsics::_subtractExactL:
+ if (!UseMathExactIntrinsics || !InlineMathNatives) return true;
+ break;
+#endif // COMPILER2
+ default:
+ return false;
+ }
+
+ return false;
+}
+
+#define VM_INTRINSIC_INITIALIZE(id, klass, name, sig, flags) #id "\0"
+static const char* vm_intrinsic_name_bodies =
+ VM_INTRINSICS_DO(VM_INTRINSIC_INITIALIZE,
+ VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_ALIAS_IGNORE);
+
+static const char* vm_intrinsic_name_table[vmIntrinsics::ID_LIMIT];
+
+const char* vmIntrinsics::name_at(vmIntrinsics::ID id) {
+ const char** nt = &vm_intrinsic_name_table[0];
+ if (nt[_none] == NULL) {
+ char* string = (char*) &vm_intrinsic_name_bodies[0];
+ for (int index = FIRST_ID; index < ID_LIMIT; index++) {
+ nt[index] = string;
+ string += strlen(string); // skip string body
+ string += 1; // skip trailing null
+ }
+ assert(!strcmp(nt[_hashCode], "_hashCode"), "lined up");
+ nt[_none] = "_none";
+ }
+ if ((uint)id < (uint)ID_LIMIT)
+ return vm_intrinsic_name_table[(uint)id];
+ else
+ return "(unknown intrinsic)";
+}
+
+// These are flag-matching functions:
+inline bool match_F_R(jshort flags) {
+ const int req = 0;
+ const int neg = JVM_ACC_STATIC | JVM_ACC_SYNCHRONIZED;
+ return (flags & (req | neg)) == req;
+}
+inline bool match_F_Y(jshort flags) {
+ const int req = JVM_ACC_SYNCHRONIZED;
+ const int neg = JVM_ACC_STATIC;
+ return (flags & (req | neg)) == req;
+}
+inline bool match_F_RN(jshort flags) {
+ const int req = JVM_ACC_NATIVE;
+ const int neg = JVM_ACC_STATIC | JVM_ACC_SYNCHRONIZED;
+ return (flags & (req | neg)) == req;
+}
+inline bool match_F_S(jshort flags) {
+ const int req = JVM_ACC_STATIC;
+ const int neg = JVM_ACC_SYNCHRONIZED;
+ return (flags & (req | neg)) == req;
+}
+inline bool match_F_SN(jshort flags) {
+ const int req = JVM_ACC_STATIC | JVM_ACC_NATIVE;
+ const int neg = JVM_ACC_SYNCHRONIZED;
+ return (flags & (req | neg)) == req;
+}
+inline bool match_F_RNY(jshort flags) {
+ const int req = JVM_ACC_NATIVE | JVM_ACC_SYNCHRONIZED;
+ const int neg = JVM_ACC_STATIC;
+ return (flags & (req | neg)) == req;
+}
+
+// These are for forming case labels:
+#define ID3(x, y, z) (( jlong)(z) + \
+ ((jlong)(y) << vmSymbols::log2_SID_LIMIT) + \
+ ((jlong)(x) << (2*vmSymbols::log2_SID_LIMIT)) )
+#define SID_ENUM(n) vmSymbols::VM_SYMBOL_ENUM_NAME(n)
+
+vmIntrinsics::ID vmIntrinsics::find_id_impl(vmSymbols::SID holder,
+ vmSymbols::SID name,
+ vmSymbols::SID sig,
+ jshort flags) {
+ assert((int)vmSymbols::SID_LIMIT <= (1<<vmSymbols::log2_SID_LIMIT), "must fit");
+
+ // Let the C compiler build the decision tree.
+
+#define VM_INTRINSIC_CASE(id, klass, name, sig, fcode) \
+ case ID3(SID_ENUM(klass), SID_ENUM(name), SID_ENUM(sig)): \
+ if (!match_##fcode(flags)) break; \
+ return id;
+
+ switch (ID3(holder, name, sig)) {
+ VM_INTRINSICS_DO(VM_INTRINSIC_CASE,
+ VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_ALIAS_IGNORE);
+ }
+ return vmIntrinsics::_none;
+
+#undef VM_INTRINSIC_CASE
+}
+
+
+const char* vmIntrinsics::short_name_as_C_string(vmIntrinsics::ID id, char* buf, int buflen) {
+ const char* str = name_at(id);
+#ifndef PRODUCT
+ const char* kname = vmSymbols::name_for(class_for(id));
+ const char* mname = vmSymbols::name_for(name_for(id));
+ const char* sname = vmSymbols::name_for(signature_for(id));
+ const char* fname = "";
+ switch (flags_for(id)) {
+ case F_Y: fname = "synchronized "; break;
+ case F_RN: fname = "native "; break;
+ case F_SN: fname = "native static "; break;
+ case F_S: fname = "static "; break;
+ case F_RNY:fname = "native synchronized "; break;
+ default: break;
+ }
+ const char* kptr = strrchr(kname, '/');
+ if (kptr != NULL) kname = kptr + 1;
+ int len = jio_snprintf(buf, buflen, "%s: %s%s.%s%s",
+ str, fname, kname, mname, sname);
+ if (len < buflen)
+ str = buf;
+#endif //PRODUCT
+ return str;
+}
+
+
+// These are to get information about intrinsics.
+
+#define ID4(x, y, z, f) ((ID3(x, y, z) << vmIntrinsics::log2_FLAG_LIMIT) | (jlong) (f))
+
+static const jlong intrinsic_info_array[vmIntrinsics::ID_LIMIT+1] = {
+#define VM_INTRINSIC_INFO(ignore_id, klass, name, sig, fcode) \
+ ID4(SID_ENUM(klass), SID_ENUM(name), SID_ENUM(sig), vmIntrinsics::fcode),
+
+ 0, VM_INTRINSICS_DO(VM_INTRINSIC_INFO,
+ VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_ALIAS_IGNORE)
+ 0
+#undef VM_INTRINSIC_INFO
+};
+
+inline jlong intrinsic_info(vmIntrinsics::ID id) {
+ return intrinsic_info_array[vmIntrinsics::ID_from((int)id)];
+}
+
+vmSymbols::SID vmIntrinsics::class_for(vmIntrinsics::ID id) {
+ jlong info = intrinsic_info(id);
+ int shift = 2*vmSymbols::log2_SID_LIMIT + log2_FLAG_LIMIT, mask = right_n_bits(vmSymbols::log2_SID_LIMIT);
+ assert(((ID4(1021,1022,1023,15) >> shift) & mask) == 1021, "");
+ return vmSymbols::SID( (info >> shift) & mask );
+}
+
+vmSymbols::SID vmIntrinsics::name_for(vmIntrinsics::ID id) {
+ jlong info = intrinsic_info(id);
+ int shift = vmSymbols::log2_SID_LIMIT + log2_FLAG_LIMIT, mask = right_n_bits(vmSymbols::log2_SID_LIMIT);
+ assert(((ID4(1021,1022,1023,15) >> shift) & mask) == 1022, "");
+ return vmSymbols::SID( (info >> shift) & mask );
+}
+
+vmSymbols::SID vmIntrinsics::signature_for(vmIntrinsics::ID id) {
+ jlong info = intrinsic_info(id);
+ int shift = log2_FLAG_LIMIT, mask = right_n_bits(vmSymbols::log2_SID_LIMIT);
+ assert(((ID4(1021,1022,1023,15) >> shift) & mask) == 1023, "");
+ return vmSymbols::SID( (info >> shift) & mask );
+}
+
+vmIntrinsics::Flags vmIntrinsics::flags_for(vmIntrinsics::ID id) {
+ jlong info = intrinsic_info(id);
+ int shift = 0, mask = right_n_bits(log2_FLAG_LIMIT);
+ assert(((ID4(1021,1022,1023,15) >> shift) & mask) == 15, "");
+ return Flags( (info >> shift) & mask );
+}
+
+
+#ifndef PRODUCT
+// verify_method performs an extra check on a matched intrinsic method
+
+static bool match_method(Method* m, Symbol* n, Symbol* s) {
+ return (m->name() == n &&
+ m->signature() == s);
+}
+
+static vmIntrinsics::ID match_method_with_klass(Method* m, Symbol* mk) {
+#define VM_INTRINSIC_MATCH(id, klassname, namepart, sigpart, flags) \
+ { Symbol* k = vmSymbols::klassname(); \
+ if (mk == k) { \
+ Symbol* n = vmSymbols::namepart(); \
+ Symbol* s = vmSymbols::sigpart(); \
+ if (match_method(m, n, s)) \
+ return vmIntrinsics::id; \
+ } }
+ VM_INTRINSICS_DO(VM_INTRINSIC_MATCH,
+ VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_ALIAS_IGNORE);
+ return vmIntrinsics::_none;
+#undef VM_INTRINSIC_MATCH
+}
+
+void vmIntrinsics::verify_method(ID actual_id, Method* m) {
+ Symbol* mk = m->method_holder()->name();
+ ID declared_id = match_method_with_klass(m, mk);
+
+ if (declared_id == actual_id) return; // success
+
+ if (declared_id == _none && actual_id != _none && mk == vmSymbols::java_lang_StrictMath()) {
+ // Here are a few special cases in StrictMath not declared in vmSymbols.hpp.
+ switch (actual_id) {
+ case _min:
+ case _max:
+ case _dsqrt:
+ declared_id = match_method_with_klass(m, vmSymbols::java_lang_Math());
+ if (declared_id == actual_id) return; // acceptable alias
+ break;
+ default:
+ break;
+ }
+ }
+
+ const char* declared_name = name_at(declared_id);
+ const char* actual_name = name_at(actual_id);
+ methodHandle mh = m;
+ m = NULL;
+ ttyLocker ttyl;
+ if (xtty != NULL) {
+ xtty->begin_elem("intrinsic_misdeclared actual='%s' declared='%s'",
+ actual_name, declared_name);
+ xtty->method(mh);
+ xtty->end_elem("%s", "");
+ }
+ if (PrintMiscellaneous && (WizardMode || Verbose)) {
+ tty->print_cr("*** misidentified method; %s(%d) should be %s(%d):",
+ declared_name, declared_id, actual_name, actual_id);
+ mh()->print_short_name(tty);
+ tty->cr();
+ }
+}
+#endif //PRODUCT