--- a/hotspot/src/cpu/x86/vm/templateTable_x86_32.cpp Fri Mar 06 17:19:08 2015 -0800
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,3668 +0,0 @@
-/*
- * Copyright (c) 1997, 2014, 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 "asm/macroAssembler.hpp"
-#include "interpreter/interpreter.hpp"
-#include "interpreter/interpreterRuntime.hpp"
-#include "interpreter/interp_masm.hpp"
-#include "interpreter/templateTable.hpp"
-#include "memory/universe.inline.hpp"
-#include "oops/methodData.hpp"
-#include "oops/objArrayKlass.hpp"
-#include "oops/oop.inline.hpp"
-#include "prims/methodHandles.hpp"
-#include "runtime/sharedRuntime.hpp"
-#include "runtime/stubRoutines.hpp"
-#include "runtime/synchronizer.hpp"
-#include "utilities/macros.hpp"
-
-#ifndef CC_INTERP
-#define __ _masm->
-
-//----------------------------------------------------------------------------------------------------
-// Platform-dependent initialization
-
-void TemplateTable::pd_initialize() {
- // No i486 specific initialization
-}
-
-//----------------------------------------------------------------------------------------------------
-// Address computation
-
-// local variables
-static inline Address iaddress(int n) {
- return Address(rdi, Interpreter::local_offset_in_bytes(n));
-}
-
-static inline Address laddress(int n) { return iaddress(n + 1); }
-static inline Address haddress(int n) { return iaddress(n + 0); }
-static inline Address faddress(int n) { return iaddress(n); }
-static inline Address daddress(int n) { return laddress(n); }
-static inline Address aaddress(int n) { return iaddress(n); }
-
-static inline Address iaddress(Register r) {
- return Address(rdi, r, Interpreter::stackElementScale());
-}
-static inline Address laddress(Register r) {
- return Address(rdi, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(1));
-}
-static inline Address haddress(Register r) {
- return Address(rdi, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(0));
-}
-
-static inline Address faddress(Register r) { return iaddress(r); }
-static inline Address daddress(Register r) { return laddress(r); }
-static inline Address aaddress(Register r) { return iaddress(r); }
-
-// expression stack
-// (Note: Must not use symmetric equivalents at_rsp_m1/2 since they store
-// data beyond the rsp which is potentially unsafe in an MT environment;
-// an interrupt may overwrite that data.)
-static inline Address at_rsp () {
- return Address(rsp, 0);
-}
-
-// At top of Java expression stack which may be different than rsp(). It
-// isn't for category 1 objects.
-static inline Address at_tos () {
- Address tos = Address(rsp, Interpreter::expr_offset_in_bytes(0));
- return tos;
-}
-
-static inline Address at_tos_p1() {
- return Address(rsp, Interpreter::expr_offset_in_bytes(1));
-}
-
-static inline Address at_tos_p2() {
- return Address(rsp, Interpreter::expr_offset_in_bytes(2));
-}
-
-// Condition conversion
-static Assembler::Condition j_not(TemplateTable::Condition cc) {
- switch (cc) {
- case TemplateTable::equal : return Assembler::notEqual;
- case TemplateTable::not_equal : return Assembler::equal;
- case TemplateTable::less : return Assembler::greaterEqual;
- case TemplateTable::less_equal : return Assembler::greater;
- case TemplateTable::greater : return Assembler::lessEqual;
- case TemplateTable::greater_equal: return Assembler::less;
- }
- ShouldNotReachHere();
- return Assembler::zero;
-}
-
-
-//----------------------------------------------------------------------------------------------------
-// Miscelaneous helper routines
-
-// Store an oop (or NULL) at the address described by obj.
-// If val == noreg this means store a NULL
-
-static void do_oop_store(InterpreterMacroAssembler* _masm,
- Address obj,
- Register val,
- BarrierSet::Name barrier,
- bool precise) {
- assert(val == noreg || val == rax, "parameter is just for looks");
- switch (barrier) {
-#if INCLUDE_ALL_GCS
- case BarrierSet::G1SATBCT:
- case BarrierSet::G1SATBCTLogging:
- {
- // flatten object address if needed
- // We do it regardless of precise because we need the registers
- if (obj.index() == noreg && obj.disp() == 0) {
- if (obj.base() != rdx) {
- __ movl(rdx, obj.base());
- }
- } else {
- __ leal(rdx, obj);
- }
- __ get_thread(rcx);
- __ save_bcp();
- __ g1_write_barrier_pre(rdx /* obj */,
- rbx /* pre_val */,
- rcx /* thread */,
- rsi /* tmp */,
- val != noreg /* tosca_live */,
- false /* expand_call */);
-
- // Do the actual store
- // noreg means NULL
- if (val == noreg) {
- __ movptr(Address(rdx, 0), NULL_WORD);
- // No post barrier for NULL
- } else {
- __ movl(Address(rdx, 0), val);
- __ g1_write_barrier_post(rdx /* store_adr */,
- val /* new_val */,
- rcx /* thread */,
- rbx /* tmp */,
- rsi /* tmp2 */);
- }
- __ restore_bcp();
-
- }
- break;
-#endif // INCLUDE_ALL_GCS
- case BarrierSet::CardTableModRef:
- case BarrierSet::CardTableExtension:
- {
- if (val == noreg) {
- __ movptr(obj, NULL_WORD);
- } else {
- __ movl(obj, val);
- // flatten object address if needed
- if (!precise || (obj.index() == noreg && obj.disp() == 0)) {
- __ store_check(obj.base());
- } else {
- __ leal(rdx, obj);
- __ store_check(rdx);
- }
- }
- }
- break;
- case BarrierSet::ModRef:
- if (val == noreg) {
- __ movptr(obj, NULL_WORD);
- } else {
- __ movl(obj, val);
- }
- break;
- default :
- ShouldNotReachHere();
-
- }
-}
-
-Address TemplateTable::at_bcp(int offset) {
- assert(_desc->uses_bcp(), "inconsistent uses_bcp information");
- return Address(rsi, offset);
-}
-
-
-void TemplateTable::patch_bytecode(Bytecodes::Code bc, Register bc_reg,
- Register temp_reg, bool load_bc_into_bc_reg/*=true*/,
- int byte_no) {
- if (!RewriteBytecodes) return;
- Label L_patch_done;
-
- switch (bc) {
- case Bytecodes::_fast_aputfield:
- case Bytecodes::_fast_bputfield:
- case Bytecodes::_fast_cputfield:
- case Bytecodes::_fast_dputfield:
- case Bytecodes::_fast_fputfield:
- case Bytecodes::_fast_iputfield:
- case Bytecodes::_fast_lputfield:
- case Bytecodes::_fast_sputfield:
- {
- // We skip bytecode quickening for putfield instructions when
- // the put_code written to the constant pool cache is zero.
- // This is required so that every execution of this instruction
- // calls out to InterpreterRuntime::resolve_get_put to do
- // additional, required work.
- assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
- assert(load_bc_into_bc_reg, "we use bc_reg as temp");
- __ get_cache_and_index_and_bytecode_at_bcp(bc_reg, temp_reg, temp_reg, byte_no, 1);
- __ movl(bc_reg, bc);
- __ cmpl(temp_reg, (int) 0);
- __ jcc(Assembler::zero, L_patch_done); // don't patch
- }
- break;
- default:
- assert(byte_no == -1, "sanity");
- // the pair bytecodes have already done the load.
- if (load_bc_into_bc_reg) {
- __ movl(bc_reg, bc);
- }
- }
-
- if (JvmtiExport::can_post_breakpoint()) {
- Label L_fast_patch;
- // if a breakpoint is present we can't rewrite the stream directly
- __ movzbl(temp_reg, at_bcp(0));
- __ cmpl(temp_reg, Bytecodes::_breakpoint);
- __ jcc(Assembler::notEqual, L_fast_patch);
- __ get_method(temp_reg);
- // Let breakpoint table handling rewrite to quicker bytecode
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), temp_reg, rsi, bc_reg);
-#ifndef ASSERT
- __ jmpb(L_patch_done);
-#else
- __ jmp(L_patch_done);
-#endif
- __ bind(L_fast_patch);
- }
-
-#ifdef ASSERT
- Label L_okay;
- __ load_unsigned_byte(temp_reg, at_bcp(0));
- __ cmpl(temp_reg, (int)Bytecodes::java_code(bc));
- __ jccb(Assembler::equal, L_okay);
- __ cmpl(temp_reg, bc_reg);
- __ jcc(Assembler::equal, L_okay);
- __ stop("patching the wrong bytecode");
- __ bind(L_okay);
-#endif
-
- // patch bytecode
- __ movb(at_bcp(0), bc_reg);
- __ bind(L_patch_done);
-}
-
-//----------------------------------------------------------------------------------------------------
-// Individual instructions
-
-void TemplateTable::nop() {
- transition(vtos, vtos);
- // nothing to do
-}
-
-void TemplateTable::shouldnotreachhere() {
- transition(vtos, vtos);
- __ stop("shouldnotreachhere bytecode");
-}
-
-
-
-void TemplateTable::aconst_null() {
- transition(vtos, atos);
- __ xorptr(rax, rax);
-}
-
-
-void TemplateTable::iconst(int value) {
- transition(vtos, itos);
- if (value == 0) {
- __ xorptr(rax, rax);
- } else {
- __ movptr(rax, value);
- }
-}
-
-
-void TemplateTable::lconst(int value) {
- transition(vtos, ltos);
- if (value == 0) {
- __ xorptr(rax, rax);
- } else {
- __ movptr(rax, value);
- }
- assert(value >= 0, "check this code");
- __ xorptr(rdx, rdx);
-}
-
-
-void TemplateTable::fconst(int value) {
- transition(vtos, ftos);
- if (value == 0) { __ fldz();
- } else if (value == 1) { __ fld1();
- } else if (value == 2) { __ fld1(); __ fld1(); __ faddp(); // should do a better solution here
- } else { ShouldNotReachHere();
- }
-}
-
-
-void TemplateTable::dconst(int value) {
- transition(vtos, dtos);
- if (value == 0) { __ fldz();
- } else if (value == 1) { __ fld1();
- } else { ShouldNotReachHere();
- }
-}
-
-
-void TemplateTable::bipush() {
- transition(vtos, itos);
- __ load_signed_byte(rax, at_bcp(1));
-}
-
-
-void TemplateTable::sipush() {
- transition(vtos, itos);
- __ load_unsigned_short(rax, at_bcp(1));
- __ bswapl(rax);
- __ sarl(rax, 16);
-}
-
-void TemplateTable::ldc(bool wide) {
- transition(vtos, vtos);
- Label call_ldc, notFloat, notClass, Done;
-
- if (wide) {
- __ get_unsigned_2_byte_index_at_bcp(rbx, 1);
- } else {
- __ load_unsigned_byte(rbx, at_bcp(1));
- }
- __ get_cpool_and_tags(rcx, rax);
- const int base_offset = ConstantPool::header_size() * wordSize;
- const int tags_offset = Array<u1>::base_offset_in_bytes();
-
- // get type
- __ xorptr(rdx, rdx);
- __ movb(rdx, Address(rax, rbx, Address::times_1, tags_offset));
-
- // unresolved class - get the resolved class
- __ cmpl(rdx, JVM_CONSTANT_UnresolvedClass);
- __ jccb(Assembler::equal, call_ldc);
-
- // unresolved class in error (resolution failed) - call into runtime
- // so that the same error from first resolution attempt is thrown.
- __ cmpl(rdx, JVM_CONSTANT_UnresolvedClassInError);
- __ jccb(Assembler::equal, call_ldc);
-
- // resolved class - need to call vm to get java mirror of the class
- __ cmpl(rdx, JVM_CONSTANT_Class);
- __ jcc(Assembler::notEqual, notClass);
-
- __ bind(call_ldc);
- __ movl(rcx, wide);
- call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), rcx);
- __ push(atos);
- __ jmp(Done);
-
- __ bind(notClass);
- __ cmpl(rdx, JVM_CONSTANT_Float);
- __ jccb(Assembler::notEqual, notFloat);
- // ftos
- __ fld_s( Address(rcx, rbx, Address::times_ptr, base_offset));
- __ push(ftos);
- __ jmp(Done);
-
- __ bind(notFloat);
-#ifdef ASSERT
- { Label L;
- __ cmpl(rdx, JVM_CONSTANT_Integer);
- __ jcc(Assembler::equal, L);
- // String and Object are rewritten to fast_aldc
- __ stop("unexpected tag type in ldc");
- __ bind(L);
- }
-#endif
- // itos JVM_CONSTANT_Integer only
- __ movl(rax, Address(rcx, rbx, Address::times_ptr, base_offset));
- __ push(itos);
- __ bind(Done);
-}
-
-// Fast path for caching oop constants.
-void TemplateTable::fast_aldc(bool wide) {
- transition(vtos, atos);
-
- Register result = rax;
- Register tmp = rdx;
- int index_size = wide ? sizeof(u2) : sizeof(u1);
-
- Label resolved;
-
- // We are resolved if the resolved reference cache entry contains a
- // non-null object (String, MethodType, etc.)
- assert_different_registers(result, tmp);
- __ get_cache_index_at_bcp(tmp, 1, index_size);
- __ load_resolved_reference_at_index(result, tmp);
- __ testl(result, result);
- __ jcc(Assembler::notZero, resolved);
-
- address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc);
-
- // first time invocation - must resolve first
- __ movl(tmp, (int)bytecode());
- __ call_VM(result, entry, tmp);
-
- __ bind(resolved);
-
- if (VerifyOops) {
- __ verify_oop(result);
- }
-}
-
-void TemplateTable::ldc2_w() {
- transition(vtos, vtos);
- Label Long, Done;
- __ get_unsigned_2_byte_index_at_bcp(rbx, 1);
-
- __ get_cpool_and_tags(rcx, rax);
- const int base_offset = ConstantPool::header_size() * wordSize;
- const int tags_offset = Array<u1>::base_offset_in_bytes();
-
- // get type
- __ cmpb(Address(rax, rbx, Address::times_1, tags_offset), JVM_CONSTANT_Double);
- __ jccb(Assembler::notEqual, Long);
- // dtos
- __ fld_d( Address(rcx, rbx, Address::times_ptr, base_offset));
- __ push(dtos);
- __ jmpb(Done);
-
- __ bind(Long);
- // ltos
- __ movptr(rax, Address(rcx, rbx, Address::times_ptr, base_offset + 0 * wordSize));
- NOT_LP64(__ movptr(rdx, Address(rcx, rbx, Address::times_ptr, base_offset + 1 * wordSize)));
-
- __ push(ltos);
-
- __ bind(Done);
-}
-
-
-void TemplateTable::locals_index(Register reg, int offset) {
- __ load_unsigned_byte(reg, at_bcp(offset));
- __ negptr(reg);
-}
-
-
-void TemplateTable::iload() {
- transition(vtos, itos);
- if (RewriteFrequentPairs) {
- Label rewrite, done;
-
- // get next byte
- __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_iload)));
- // if _iload, wait to rewrite to iload2. We only want to rewrite the
- // last two iloads in a pair. Comparing against fast_iload means that
- // the next bytecode is neither an iload or a caload, and therefore
- // an iload pair.
- __ cmpl(rbx, Bytecodes::_iload);
- __ jcc(Assembler::equal, done);
-
- __ cmpl(rbx, Bytecodes::_fast_iload);
- __ movl(rcx, Bytecodes::_fast_iload2);
- __ jccb(Assembler::equal, rewrite);
-
- // if _caload, rewrite to fast_icaload
- __ cmpl(rbx, Bytecodes::_caload);
- __ movl(rcx, Bytecodes::_fast_icaload);
- __ jccb(Assembler::equal, rewrite);
-
- // rewrite so iload doesn't check again.
- __ movl(rcx, Bytecodes::_fast_iload);
-
- // rewrite
- // rcx: fast bytecode
- __ bind(rewrite);
- patch_bytecode(Bytecodes::_iload, rcx, rbx, false);
- __ bind(done);
- }
-
- // Get the local value into tos
- locals_index(rbx);
- __ movl(rax, iaddress(rbx));
-}
-
-
-void TemplateTable::fast_iload2() {
- transition(vtos, itos);
- locals_index(rbx);
- __ movl(rax, iaddress(rbx));
- __ push(itos);
- locals_index(rbx, 3);
- __ movl(rax, iaddress(rbx));
-}
-
-void TemplateTable::fast_iload() {
- transition(vtos, itos);
- locals_index(rbx);
- __ movl(rax, iaddress(rbx));
-}
-
-
-void TemplateTable::lload() {
- transition(vtos, ltos);
- locals_index(rbx);
- __ movptr(rax, laddress(rbx));
- NOT_LP64(__ movl(rdx, haddress(rbx)));
-}
-
-
-void TemplateTable::fload() {
- transition(vtos, ftos);
- locals_index(rbx);
- __ fld_s(faddress(rbx));
-}
-
-
-void TemplateTable::dload() {
- transition(vtos, dtos);
- locals_index(rbx);
- __ fld_d(daddress(rbx));
-}
-
-
-void TemplateTable::aload() {
- transition(vtos, atos);
- locals_index(rbx);
- __ movptr(rax, aaddress(rbx));
-}
-
-
-void TemplateTable::locals_index_wide(Register reg) {
- __ load_unsigned_short(reg, at_bcp(2));
- __ bswapl(reg);
- __ shrl(reg, 16);
- __ negptr(reg);
-}
-
-
-void TemplateTable::wide_iload() {
- transition(vtos, itos);
- locals_index_wide(rbx);
- __ movl(rax, iaddress(rbx));
-}
-
-
-void TemplateTable::wide_lload() {
- transition(vtos, ltos);
- locals_index_wide(rbx);
- __ movptr(rax, laddress(rbx));
- NOT_LP64(__ movl(rdx, haddress(rbx)));
-}
-
-
-void TemplateTable::wide_fload() {
- transition(vtos, ftos);
- locals_index_wide(rbx);
- __ fld_s(faddress(rbx));
-}
-
-
-void TemplateTable::wide_dload() {
- transition(vtos, dtos);
- locals_index_wide(rbx);
- __ fld_d(daddress(rbx));
-}
-
-
-void TemplateTable::wide_aload() {
- transition(vtos, atos);
- locals_index_wide(rbx);
- __ movptr(rax, aaddress(rbx));
-}
-
-void TemplateTable::index_check(Register array, Register index) {
- // Pop ptr into array
- __ pop_ptr(array);
- index_check_without_pop(array, index);
-}
-
-void TemplateTable::index_check_without_pop(Register array, Register index) {
- // destroys rbx,
- // check array
- __ null_check(array, arrayOopDesc::length_offset_in_bytes());
- LP64_ONLY(__ movslq(index, index));
- // check index
- __ cmpl(index, Address(array, arrayOopDesc::length_offset_in_bytes()));
- if (index != rbx) {
- // ??? convention: move aberrant index into rbx, for exception message
- assert(rbx != array, "different registers");
- __ mov(rbx, index);
- }
- __ jump_cc(Assembler::aboveEqual,
- ExternalAddress(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry));
-}
-
-
-void TemplateTable::iaload() {
- transition(itos, itos);
- // rdx: array
- index_check(rdx, rax); // kills rbx,
- // rax,: index
- __ movl(rax, Address(rdx, rax, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_INT)));
-}
-
-
-void TemplateTable::laload() {
- transition(itos, ltos);
- // rax,: index
- // rdx: array
- index_check(rdx, rax);
- __ mov(rbx, rax);
- // rbx,: index
- __ movptr(rax, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize));
- NOT_LP64(__ movl(rdx, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize)));
-}
-
-
-void TemplateTable::faload() {
- transition(itos, ftos);
- // rdx: array
- index_check(rdx, rax); // kills rbx,
- // rax,: index
- __ fld_s(Address(rdx, rax, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT)));
-}
-
-
-void TemplateTable::daload() {
- transition(itos, dtos);
- // rdx: array
- index_check(rdx, rax); // kills rbx,
- // rax,: index
- __ fld_d(Address(rdx, rax, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE)));
-}
-
-
-void TemplateTable::aaload() {
- transition(itos, atos);
- // rdx: array
- index_check(rdx, rax); // kills rbx,
- // rax,: index
- __ movptr(rax, Address(rdx, rax, Address::times_ptr, arrayOopDesc::base_offset_in_bytes(T_OBJECT)));
-}
-
-
-void TemplateTable::baload() {
- transition(itos, itos);
- // rdx: array
- index_check(rdx, rax); // kills rbx,
- // rax,: index
- // can do better code for P5 - fix this at some point
- __ load_signed_byte(rbx, Address(rdx, rax, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE)));
- __ mov(rax, rbx);
-}
-
-
-void TemplateTable::caload() {
- transition(itos, itos);
- // rdx: array
- index_check(rdx, rax); // kills rbx,
- // rax,: index
- // can do better code for P5 - may want to improve this at some point
- __ load_unsigned_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)));
- __ mov(rax, rbx);
-}
-
-// iload followed by caload frequent pair
-void TemplateTable::fast_icaload() {
- transition(vtos, itos);
- // load index out of locals
- locals_index(rbx);
- __ movl(rax, iaddress(rbx));
-
- // rdx: array
- index_check(rdx, rax);
- // rax,: index
- __ load_unsigned_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)));
- __ mov(rax, rbx);
-}
-
-void TemplateTable::saload() {
- transition(itos, itos);
- // rdx: array
- index_check(rdx, rax); // kills rbx,
- // rax,: index
- // can do better code for P5 - may want to improve this at some point
- __ load_signed_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_SHORT)));
- __ mov(rax, rbx);
-}
-
-
-void TemplateTable::iload(int n) {
- transition(vtos, itos);
- __ movl(rax, iaddress(n));
-}
-
-
-void TemplateTable::lload(int n) {
- transition(vtos, ltos);
- __ movptr(rax, laddress(n));
- NOT_LP64(__ movptr(rdx, haddress(n)));
-}
-
-
-void TemplateTable::fload(int n) {
- transition(vtos, ftos);
- __ fld_s(faddress(n));
-}
-
-
-void TemplateTable::dload(int n) {
- transition(vtos, dtos);
- __ fld_d(daddress(n));
-}
-
-
-void TemplateTable::aload(int n) {
- transition(vtos, atos);
- __ movptr(rax, aaddress(n));
-}
-
-
-void TemplateTable::aload_0() {
- transition(vtos, atos);
- // According to bytecode histograms, the pairs:
- //
- // _aload_0, _fast_igetfield
- // _aload_0, _fast_agetfield
- // _aload_0, _fast_fgetfield
- //
- // occur frequently. If RewriteFrequentPairs is set, the (slow) _aload_0
- // bytecode checks if the next bytecode is either _fast_igetfield,
- // _fast_agetfield or _fast_fgetfield and then rewrites the
- // current bytecode into a pair bytecode; otherwise it rewrites the current
- // bytecode into _fast_aload_0 that doesn't do the pair check anymore.
- //
- // Note: If the next bytecode is _getfield, the rewrite must be delayed,
- // otherwise we may miss an opportunity for a pair.
- //
- // Also rewrite frequent pairs
- // aload_0, aload_1
- // aload_0, iload_1
- // These bytecodes with a small amount of code are most profitable to rewrite
- if (RewriteFrequentPairs) {
- Label rewrite, done;
- // get next byte
- __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_aload_0)));
-
- // do actual aload_0
- aload(0);
-
- // if _getfield then wait with rewrite
- __ cmpl(rbx, Bytecodes::_getfield);
- __ jcc(Assembler::equal, done);
-
- // if _igetfield then reqrite to _fast_iaccess_0
- assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == Bytecodes::_aload_0, "fix bytecode definition");
- __ cmpl(rbx, Bytecodes::_fast_igetfield);
- __ movl(rcx, Bytecodes::_fast_iaccess_0);
- __ jccb(Assembler::equal, rewrite);
-
- // if _agetfield then reqrite to _fast_aaccess_0
- assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == Bytecodes::_aload_0, "fix bytecode definition");
- __ cmpl(rbx, Bytecodes::_fast_agetfield);
- __ movl(rcx, Bytecodes::_fast_aaccess_0);
- __ jccb(Assembler::equal, rewrite);
-
- // if _fgetfield then reqrite to _fast_faccess_0
- assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == Bytecodes::_aload_0, "fix bytecode definition");
- __ cmpl(rbx, Bytecodes::_fast_fgetfield);
- __ movl(rcx, Bytecodes::_fast_faccess_0);
- __ jccb(Assembler::equal, rewrite);
-
- // else rewrite to _fast_aload0
- assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == Bytecodes::_aload_0, "fix bytecode definition");
- __ movl(rcx, Bytecodes::_fast_aload_0);
-
- // rewrite
- // rcx: fast bytecode
- __ bind(rewrite);
- patch_bytecode(Bytecodes::_aload_0, rcx, rbx, false);
-
- __ bind(done);
- } else {
- aload(0);
- }
-}
-
-void TemplateTable::istore() {
- transition(itos, vtos);
- locals_index(rbx);
- __ movl(iaddress(rbx), rax);
-}
-
-
-void TemplateTable::lstore() {
- transition(ltos, vtos);
- locals_index(rbx);
- __ movptr(laddress(rbx), rax);
- NOT_LP64(__ movptr(haddress(rbx), rdx));
-}
-
-
-void TemplateTable::fstore() {
- transition(ftos, vtos);
- locals_index(rbx);
- __ fstp_s(faddress(rbx));
-}
-
-
-void TemplateTable::dstore() {
- transition(dtos, vtos);
- locals_index(rbx);
- __ fstp_d(daddress(rbx));
-}
-
-
-void TemplateTable::astore() {
- transition(vtos, vtos);
- __ pop_ptr(rax);
- locals_index(rbx);
- __ movptr(aaddress(rbx), rax);
-}
-
-
-void TemplateTable::wide_istore() {
- transition(vtos, vtos);
- __ pop_i(rax);
- locals_index_wide(rbx);
- __ movl(iaddress(rbx), rax);
-}
-
-
-void TemplateTable::wide_lstore() {
- transition(vtos, vtos);
- __ pop_l(rax, rdx);
- locals_index_wide(rbx);
- __ movptr(laddress(rbx), rax);
- NOT_LP64(__ movl(haddress(rbx), rdx));
-}
-
-
-void TemplateTable::wide_fstore() {
- wide_istore();
-}
-
-
-void TemplateTable::wide_dstore() {
- wide_lstore();
-}
-
-
-void TemplateTable::wide_astore() {
- transition(vtos, vtos);
- __ pop_ptr(rax);
- locals_index_wide(rbx);
- __ movptr(aaddress(rbx), rax);
-}
-
-
-void TemplateTable::iastore() {
- transition(itos, vtos);
- __ pop_i(rbx);
- // rax,: value
- // rdx: array
- index_check(rdx, rbx); // prefer index in rbx,
- // rbx,: index
- __ movl(Address(rdx, rbx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_INT)), rax);
-}
-
-
-void TemplateTable::lastore() {
- transition(ltos, vtos);
- __ pop_i(rbx);
- // rax,: low(value)
- // rcx: array
- // rdx: high(value)
- index_check(rcx, rbx); // prefer index in rbx,
- // rbx,: index
- __ movptr(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize), rax);
- NOT_LP64(__ movl(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize), rdx));
-}
-
-
-void TemplateTable::fastore() {
- transition(ftos, vtos);
- __ pop_i(rbx);
- // rdx: array
- // st0: value
- index_check(rdx, rbx); // prefer index in rbx,
- // rbx,: index
- __ fstp_s(Address(rdx, rbx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT)));
-}
-
-
-void TemplateTable::dastore() {
- transition(dtos, vtos);
- __ pop_i(rbx);
- // rdx: array
- // st0: value
- index_check(rdx, rbx); // prefer index in rbx,
- // rbx,: index
- __ fstp_d(Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE)));
-}
-
-
-void TemplateTable::aastore() {
- Label is_null, ok_is_subtype, done;
- transition(vtos, vtos);
- // stack: ..., array, index, value
- __ movptr(rax, at_tos()); // Value
- __ movl(rcx, at_tos_p1()); // Index
- __ movptr(rdx, at_tos_p2()); // Array
-
- Address element_address(rdx, rcx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_OBJECT));
- index_check_without_pop(rdx, rcx); // kills rbx,
- // do array store check - check for NULL value first
- __ testptr(rax, rax);
- __ jcc(Assembler::zero, is_null);
-
- // Move subklass into EBX
- __ load_klass(rbx, rax);
- // Move superklass into EAX
- __ load_klass(rax, rdx);
- __ movptr(rax, Address(rax, ObjArrayKlass::element_klass_offset()));
- // Compress array+index*wordSize+12 into a single register. Frees ECX.
- __ lea(rdx, element_address);
-
- // Generate subtype check. Blows ECX. Resets EDI to locals.
- // Superklass in EAX. Subklass in EBX.
- __ gen_subtype_check( rbx, ok_is_subtype );
-
- // Come here on failure
- // object is at TOS
- __ jump(ExternalAddress(Interpreter::_throw_ArrayStoreException_entry));
-
- // Come here on success
- __ bind(ok_is_subtype);
-
- // Get the value to store
- __ movptr(rax, at_rsp());
- // and store it with appropriate barrier
- do_oop_store(_masm, Address(rdx, 0), rax, _bs->kind(), true);
-
- __ jmp(done);
-
- // Have a NULL in EAX, EDX=array, ECX=index. Store NULL at ary[idx]
- __ bind(is_null);
- __ profile_null_seen(rbx);
-
- // Store NULL, (noreg means NULL to do_oop_store)
- do_oop_store(_masm, element_address, noreg, _bs->kind(), true);
-
- // Pop stack arguments
- __ bind(done);
- __ addptr(rsp, 3 * Interpreter::stackElementSize);
-}
-
-
-void TemplateTable::bastore() {
- transition(itos, vtos);
- __ pop_i(rbx);
- // rax,: value
- // rdx: array
- index_check(rdx, rbx); // prefer index in rbx,
- // rbx,: index
- __ movb(Address(rdx, rbx, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE)), rax);
-}
-
-
-void TemplateTable::castore() {
- transition(itos, vtos);
- __ pop_i(rbx);
- // rax,: value
- // rdx: array
- index_check(rdx, rbx); // prefer index in rbx,
- // rbx,: index
- __ movw(Address(rdx, rbx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)), rax);
-}
-
-
-void TemplateTable::sastore() {
- castore();
-}
-
-
-void TemplateTable::istore(int n) {
- transition(itos, vtos);
- __ movl(iaddress(n), rax);
-}
-
-
-void TemplateTable::lstore(int n) {
- transition(ltos, vtos);
- __ movptr(laddress(n), rax);
- NOT_LP64(__ movptr(haddress(n), rdx));
-}
-
-
-void TemplateTable::fstore(int n) {
- transition(ftos, vtos);
- __ fstp_s(faddress(n));
-}
-
-
-void TemplateTable::dstore(int n) {
- transition(dtos, vtos);
- __ fstp_d(daddress(n));
-}
-
-
-void TemplateTable::astore(int n) {
- transition(vtos, vtos);
- __ pop_ptr(rax);
- __ movptr(aaddress(n), rax);
-}
-
-
-void TemplateTable::pop() {
- transition(vtos, vtos);
- __ addptr(rsp, Interpreter::stackElementSize);
-}
-
-
-void TemplateTable::pop2() {
- transition(vtos, vtos);
- __ addptr(rsp, 2*Interpreter::stackElementSize);
-}
-
-
-void TemplateTable::dup() {
- transition(vtos, vtos);
- // stack: ..., a
- __ load_ptr(0, rax);
- __ push_ptr(rax);
- // stack: ..., a, a
-}
-
-
-void TemplateTable::dup_x1() {
- transition(vtos, vtos);
- // stack: ..., a, b
- __ load_ptr( 0, rax); // load b
- __ load_ptr( 1, rcx); // load a
- __ store_ptr(1, rax); // store b
- __ store_ptr(0, rcx); // store a
- __ push_ptr(rax); // push b
- // stack: ..., b, a, b
-}
-
-
-void TemplateTable::dup_x2() {
- transition(vtos, vtos);
- // stack: ..., a, b, c
- __ load_ptr( 0, rax); // load c
- __ load_ptr( 2, rcx); // load a
- __ store_ptr(2, rax); // store c in a
- __ push_ptr(rax); // push c
- // stack: ..., c, b, c, c
- __ load_ptr( 2, rax); // load b
- __ store_ptr(2, rcx); // store a in b
- // stack: ..., c, a, c, c
- __ store_ptr(1, rax); // store b in c
- // stack: ..., c, a, b, c
-}
-
-
-void TemplateTable::dup2() {
- transition(vtos, vtos);
- // stack: ..., a, b
- __ load_ptr(1, rax); // load a
- __ push_ptr(rax); // push a
- __ load_ptr(1, rax); // load b
- __ push_ptr(rax); // push b
- // stack: ..., a, b, a, b
-}
-
-
-void TemplateTable::dup2_x1() {
- transition(vtos, vtos);
- // stack: ..., a, b, c
- __ load_ptr( 0, rcx); // load c
- __ load_ptr( 1, rax); // load b
- __ push_ptr(rax); // push b
- __ push_ptr(rcx); // push c
- // stack: ..., a, b, c, b, c
- __ store_ptr(3, rcx); // store c in b
- // stack: ..., a, c, c, b, c
- __ load_ptr( 4, rcx); // load a
- __ store_ptr(2, rcx); // store a in 2nd c
- // stack: ..., a, c, a, b, c
- __ store_ptr(4, rax); // store b in a
- // stack: ..., b, c, a, b, c
- // stack: ..., b, c, a, b, c
-}
-
-
-void TemplateTable::dup2_x2() {
- transition(vtos, vtos);
- // stack: ..., a, b, c, d
- __ load_ptr( 0, rcx); // load d
- __ load_ptr( 1, rax); // load c
- __ push_ptr(rax); // push c
- __ push_ptr(rcx); // push d
- // stack: ..., a, b, c, d, c, d
- __ load_ptr( 4, rax); // load b
- __ store_ptr(2, rax); // store b in d
- __ store_ptr(4, rcx); // store d in b
- // stack: ..., a, d, c, b, c, d
- __ load_ptr( 5, rcx); // load a
- __ load_ptr( 3, rax); // load c
- __ store_ptr(3, rcx); // store a in c
- __ store_ptr(5, rax); // store c in a
- // stack: ..., c, d, a, b, c, d
- // stack: ..., c, d, a, b, c, d
-}
-
-
-void TemplateTable::swap() {
- transition(vtos, vtos);
- // stack: ..., a, b
- __ load_ptr( 1, rcx); // load a
- __ load_ptr( 0, rax); // load b
- __ store_ptr(0, rcx); // store a in b
- __ store_ptr(1, rax); // store b in a
- // stack: ..., b, a
-}
-
-
-void TemplateTable::iop2(Operation op) {
- transition(itos, itos);
- switch (op) {
- case add : __ pop_i(rdx); __ addl (rax, rdx); break;
- case sub : __ mov(rdx, rax); __ pop_i(rax); __ subl (rax, rdx); break;
- case mul : __ pop_i(rdx); __ imull(rax, rdx); break;
- case _and : __ pop_i(rdx); __ andl (rax, rdx); break;
- case _or : __ pop_i(rdx); __ orl (rax, rdx); break;
- case _xor : __ pop_i(rdx); __ xorl (rax, rdx); break;
- case shl : __ mov(rcx, rax); __ pop_i(rax); __ shll (rax); break; // implicit masking of lower 5 bits by Intel shift instr.
- case shr : __ mov(rcx, rax); __ pop_i(rax); __ sarl (rax); break; // implicit masking of lower 5 bits by Intel shift instr.
- case ushr : __ mov(rcx, rax); __ pop_i(rax); __ shrl (rax); break; // implicit masking of lower 5 bits by Intel shift instr.
- default : ShouldNotReachHere();
- }
-}
-
-
-void TemplateTable::lop2(Operation op) {
- transition(ltos, ltos);
- __ pop_l(rbx, rcx);
- switch (op) {
- case add : __ addl(rax, rbx); __ adcl(rdx, rcx); break;
- case sub : __ subl(rbx, rax); __ sbbl(rcx, rdx);
- __ mov (rax, rbx); __ mov (rdx, rcx); break;
- case _and : __ andl(rax, rbx); __ andl(rdx, rcx); break;
- case _or : __ orl (rax, rbx); __ orl (rdx, rcx); break;
- case _xor : __ xorl(rax, rbx); __ xorl(rdx, rcx); break;
- default : ShouldNotReachHere();
- }
-}
-
-
-void TemplateTable::idiv() {
- transition(itos, itos);
- __ mov(rcx, rax);
- __ pop_i(rax);
- // Note: could xor rax, and rcx and compare with (-1 ^ min_int). If
- // they are not equal, one could do a normal division (no correction
- // needed), which may speed up this implementation for the common case.
- // (see also JVM spec., p.243 & p.271)
- __ corrected_idivl(rcx);
-}
-
-
-void TemplateTable::irem() {
- transition(itos, itos);
- __ mov(rcx, rax);
- __ pop_i(rax);
- // Note: could xor rax, and rcx and compare with (-1 ^ min_int). If
- // they are not equal, one could do a normal division (no correction
- // needed), which may speed up this implementation for the common case.
- // (see also JVM spec., p.243 & p.271)
- __ corrected_idivl(rcx);
- __ mov(rax, rdx);
-}
-
-
-void TemplateTable::lmul() {
- transition(ltos, ltos);
- __ pop_l(rbx, rcx);
- __ push(rcx); __ push(rbx);
- __ push(rdx); __ push(rax);
- __ lmul(2 * wordSize, 0);
- __ addptr(rsp, 4 * wordSize); // take off temporaries
-}
-
-
-void TemplateTable::ldiv() {
- transition(ltos, ltos);
- __ pop_l(rbx, rcx);
- __ push(rcx); __ push(rbx);
- __ push(rdx); __ push(rax);
- // check if y = 0
- __ orl(rax, rdx);
- __ jump_cc(Assembler::zero,
- ExternalAddress(Interpreter::_throw_ArithmeticException_entry));
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::ldiv));
- __ addptr(rsp, 4 * wordSize); // take off temporaries
-}
-
-
-void TemplateTable::lrem() {
- transition(ltos, ltos);
- __ pop_l(rbx, rcx);
- __ push(rcx); __ push(rbx);
- __ push(rdx); __ push(rax);
- // check if y = 0
- __ orl(rax, rdx);
- __ jump_cc(Assembler::zero,
- ExternalAddress(Interpreter::_throw_ArithmeticException_entry));
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::lrem));
- __ addptr(rsp, 4 * wordSize);
-}
-
-
-void TemplateTable::lshl() {
- transition(itos, ltos);
- __ movl(rcx, rax); // get shift count
- __ pop_l(rax, rdx); // get shift value
- __ lshl(rdx, rax);
-}
-
-
-void TemplateTable::lshr() {
- transition(itos, ltos);
- __ mov(rcx, rax); // get shift count
- __ pop_l(rax, rdx); // get shift value
- __ lshr(rdx, rax, true);
-}
-
-
-void TemplateTable::lushr() {
- transition(itos, ltos);
- __ mov(rcx, rax); // get shift count
- __ pop_l(rax, rdx); // get shift value
- __ lshr(rdx, rax);
-}
-
-
-void TemplateTable::fop2(Operation op) {
- transition(ftos, ftos);
- switch (op) {
- case add: __ fadd_s (at_rsp()); break;
- case sub: __ fsubr_s(at_rsp()); break;
- case mul: __ fmul_s (at_rsp()); break;
- case div: __ fdivr_s(at_rsp()); break;
- case rem: __ fld_s (at_rsp()); __ fremr(rax); break;
- default : ShouldNotReachHere();
- }
- __ f2ieee();
- __ pop(rax); // pop float thing off
-}
-
-
-void TemplateTable::dop2(Operation op) {
- transition(dtos, dtos);
-
- switch (op) {
- case add: __ fadd_d (at_rsp()); break;
- case sub: __ fsubr_d(at_rsp()); break;
- case mul: {
- Label L_strict;
- Label L_join;
- const Address access_flags (rcx, Method::access_flags_offset());
- __ get_method(rcx);
- __ movl(rcx, access_flags);
- __ testl(rcx, JVM_ACC_STRICT);
- __ jccb(Assembler::notZero, L_strict);
- __ fmul_d (at_rsp());
- __ jmpb(L_join);
- __ bind(L_strict);
- __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1()));
- __ fmulp();
- __ fmul_d (at_rsp());
- __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2()));
- __ fmulp();
- __ bind(L_join);
- break;
- }
- case div: {
- Label L_strict;
- Label L_join;
- const Address access_flags (rcx, Method::access_flags_offset());
- __ get_method(rcx);
- __ movl(rcx, access_flags);
- __ testl(rcx, JVM_ACC_STRICT);
- __ jccb(Assembler::notZero, L_strict);
- __ fdivr_d(at_rsp());
- __ jmp(L_join);
- __ bind(L_strict);
- __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1()));
- __ fmul_d (at_rsp());
- __ fdivrp();
- __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2()));
- __ fmulp();
- __ bind(L_join);
- break;
- }
- case rem: __ fld_d (at_rsp()); __ fremr(rax); break;
- default : ShouldNotReachHere();
- }
- __ d2ieee();
- // Pop double precision number from rsp.
- __ pop(rax);
- __ pop(rdx);
-}
-
-
-void TemplateTable::ineg() {
- transition(itos, itos);
- __ negl(rax);
-}
-
-
-void TemplateTable::lneg() {
- transition(ltos, ltos);
- __ lneg(rdx, rax);
-}
-
-
-void TemplateTable::fneg() {
- transition(ftos, ftos);
- __ fchs();
-}
-
-
-void TemplateTable::dneg() {
- transition(dtos, dtos);
- __ fchs();
-}
-
-
-void TemplateTable::iinc() {
- transition(vtos, vtos);
- __ load_signed_byte(rdx, at_bcp(2)); // get constant
- locals_index(rbx);
- __ addl(iaddress(rbx), rdx);
-}
-
-
-void TemplateTable::wide_iinc() {
- transition(vtos, vtos);
- __ movl(rdx, at_bcp(4)); // get constant
- locals_index_wide(rbx);
- __ bswapl(rdx); // swap bytes & sign-extend constant
- __ sarl(rdx, 16);
- __ addl(iaddress(rbx), rdx);
- // Note: should probably use only one movl to get both
- // the index and the constant -> fix this
-}
-
-
-void TemplateTable::convert() {
- // Checking
-#ifdef ASSERT
- { TosState tos_in = ilgl;
- TosState tos_out = ilgl;
- switch (bytecode()) {
- case Bytecodes::_i2l: // fall through
- case Bytecodes::_i2f: // fall through
- case Bytecodes::_i2d: // fall through
- case Bytecodes::_i2b: // fall through
- case Bytecodes::_i2c: // fall through
- case Bytecodes::_i2s: tos_in = itos; break;
- case Bytecodes::_l2i: // fall through
- case Bytecodes::_l2f: // fall through
- case Bytecodes::_l2d: tos_in = ltos; break;
- case Bytecodes::_f2i: // fall through
- case Bytecodes::_f2l: // fall through
- case Bytecodes::_f2d: tos_in = ftos; break;
- case Bytecodes::_d2i: // fall through
- case Bytecodes::_d2l: // fall through
- case Bytecodes::_d2f: tos_in = dtos; break;
- default : ShouldNotReachHere();
- }
- switch (bytecode()) {
- case Bytecodes::_l2i: // fall through
- case Bytecodes::_f2i: // fall through
- case Bytecodes::_d2i: // fall through
- case Bytecodes::_i2b: // fall through
- case Bytecodes::_i2c: // fall through
- case Bytecodes::_i2s: tos_out = itos; break;
- case Bytecodes::_i2l: // fall through
- case Bytecodes::_f2l: // fall through
- case Bytecodes::_d2l: tos_out = ltos; break;
- case Bytecodes::_i2f: // fall through
- case Bytecodes::_l2f: // fall through
- case Bytecodes::_d2f: tos_out = ftos; break;
- case Bytecodes::_i2d: // fall through
- case Bytecodes::_l2d: // fall through
- case Bytecodes::_f2d: tos_out = dtos; break;
- default : ShouldNotReachHere();
- }
- transition(tos_in, tos_out);
- }
-#endif // ASSERT
-
- // Conversion
- // (Note: use push(rcx)/pop(rcx) for 1/2-word stack-ptr manipulation)
- switch (bytecode()) {
- case Bytecodes::_i2l:
- __ extend_sign(rdx, rax);
- break;
- case Bytecodes::_i2f:
- __ push(rax); // store int on tos
- __ fild_s(at_rsp()); // load int to ST0
- __ f2ieee(); // truncate to float size
- __ pop(rcx); // adjust rsp
- break;
- case Bytecodes::_i2d:
- __ push(rax); // add one slot for d2ieee()
- __ push(rax); // store int on tos
- __ fild_s(at_rsp()); // load int to ST0
- __ d2ieee(); // truncate to double size
- __ pop(rcx); // adjust rsp
- __ pop(rcx);
- break;
- case Bytecodes::_i2b:
- __ shll(rax, 24); // truncate upper 24 bits
- __ sarl(rax, 24); // and sign-extend byte
- LP64_ONLY(__ movsbl(rax, rax));
- break;
- case Bytecodes::_i2c:
- __ andl(rax, 0xFFFF); // truncate upper 16 bits
- LP64_ONLY(__ movzwl(rax, rax));
- break;
- case Bytecodes::_i2s:
- __ shll(rax, 16); // truncate upper 16 bits
- __ sarl(rax, 16); // and sign-extend short
- LP64_ONLY(__ movswl(rax, rax));
- break;
- case Bytecodes::_l2i:
- /* nothing to do */
- break;
- case Bytecodes::_l2f:
- __ push(rdx); // store long on tos
- __ push(rax);
- __ fild_d(at_rsp()); // load long to ST0
- __ f2ieee(); // truncate to float size
- __ pop(rcx); // adjust rsp
- __ pop(rcx);
- break;
- case Bytecodes::_l2d:
- __ push(rdx); // store long on tos
- __ push(rax);
- __ fild_d(at_rsp()); // load long to ST0
- __ d2ieee(); // truncate to double size
- __ pop(rcx); // adjust rsp
- __ pop(rcx);
- break;
- case Bytecodes::_f2i:
- __ push(rcx); // reserve space for argument
- __ fstp_s(at_rsp()); // pass float argument on stack
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1);
- break;
- case Bytecodes::_f2l:
- __ push(rcx); // reserve space for argument
- __ fstp_s(at_rsp()); // pass float argument on stack
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1);
- break;
- case Bytecodes::_f2d:
- /* nothing to do */
- break;
- case Bytecodes::_d2i:
- __ push(rcx); // reserve space for argument
- __ push(rcx);
- __ fstp_d(at_rsp()); // pass double argument on stack
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 2);
- break;
- case Bytecodes::_d2l:
- __ push(rcx); // reserve space for argument
- __ push(rcx);
- __ fstp_d(at_rsp()); // pass double argument on stack
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 2);
- break;
- case Bytecodes::_d2f:
- __ push(rcx); // reserve space for f2ieee()
- __ f2ieee(); // truncate to float size
- __ pop(rcx); // adjust rsp
- break;
- default :
- ShouldNotReachHere();
- }
-}
-
-
-void TemplateTable::lcmp() {
- transition(ltos, itos);
- // y = rdx:rax
- __ pop_l(rbx, rcx); // get x = rcx:rbx
- __ lcmp2int(rcx, rbx, rdx, rax);// rcx := cmp(x, y)
- __ mov(rax, rcx);
-}
-
-
-void TemplateTable::float_cmp(bool is_float, int unordered_result) {
- if (is_float) {
- __ fld_s(at_rsp());
- } else {
- __ fld_d(at_rsp());
- __ pop(rdx);
- }
- __ pop(rcx);
- __ fcmp2int(rax, unordered_result < 0);
-}
-
-
-void TemplateTable::branch(bool is_jsr, bool is_wide) {
- __ get_method(rcx); // ECX holds method
- __ profile_taken_branch(rax,rbx); // EAX holds updated MDP, EBX holds bumped taken count
-
- const ByteSize be_offset = MethodCounters::backedge_counter_offset() +
- InvocationCounter::counter_offset();
- const ByteSize inv_offset = MethodCounters::invocation_counter_offset() +
- InvocationCounter::counter_offset();
-
- // Load up EDX with the branch displacement
- if (is_wide) {
- __ movl(rdx, at_bcp(1));
- } else {
- __ load_signed_short(rdx, at_bcp(1));
- }
- __ bswapl(rdx);
- if (!is_wide) __ sarl(rdx, 16);
- LP64_ONLY(__ movslq(rdx, rdx));
-
-
- // Handle all the JSR stuff here, then exit.
- // It's much shorter and cleaner than intermingling with the
- // non-JSR normal-branch stuff occurring below.
- if (is_jsr) {
- // Pre-load the next target bytecode into EBX
- __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1, 0));
-
- // compute return address as bci in rax,
- __ lea(rax, at_bcp((is_wide ? 5 : 3) - in_bytes(ConstMethod::codes_offset())));
- __ subptr(rax, Address(rcx, Method::const_offset()));
- // Adjust the bcp in RSI by the displacement in EDX
- __ addptr(rsi, rdx);
- // Push return address
- __ push_i(rax);
- // jsr returns vtos
- __ dispatch_only_noverify(vtos);
- return;
- }
-
- // Normal (non-jsr) branch handling
-
- // Adjust the bcp in RSI by the displacement in EDX
- __ addptr(rsi, rdx);
-
- assert(UseLoopCounter || !UseOnStackReplacement, "on-stack-replacement requires loop counters");
- Label backedge_counter_overflow;
- Label profile_method;
- Label dispatch;
- if (UseLoopCounter) {
- // increment backedge counter for backward branches
- // rax,: MDO
- // rbx,: MDO bumped taken-count
- // rcx: method
- // rdx: target offset
- // rsi: target bcp
- // rdi: locals pointer
- __ testl(rdx, rdx); // check if forward or backward branch
- __ jcc(Assembler::positive, dispatch); // count only if backward branch
-
- // check if MethodCounters exists
- Label has_counters;
- __ movptr(rax, Address(rcx, Method::method_counters_offset()));
- __ testptr(rax, rax);
- __ jcc(Assembler::notZero, has_counters);
- __ push(rdx);
- __ push(rcx);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::build_method_counters),
- rcx);
- __ pop(rcx);
- __ pop(rdx);
- __ movptr(rax, Address(rcx, Method::method_counters_offset()));
- __ testptr(rax, rax);
- __ jcc(Assembler::zero, dispatch);
- __ bind(has_counters);
-
- if (TieredCompilation) {
- Label no_mdo;
- int increment = InvocationCounter::count_increment;
- if (ProfileInterpreter) {
- // Are we profiling?
- __ movptr(rbx, Address(rcx, in_bytes(Method::method_data_offset())));
- __ testptr(rbx, rbx);
- __ jccb(Assembler::zero, no_mdo);
- // Increment the MDO backedge counter
- const Address mdo_backedge_counter(rbx, in_bytes(MethodData::backedge_counter_offset()) +
- in_bytes(InvocationCounter::counter_offset()));
- const Address mask(rbx, in_bytes(MethodData::backedge_mask_offset()));
- __ increment_mask_and_jump(mdo_backedge_counter, increment, mask,
- rax, false, Assembler::zero, &backedge_counter_overflow);
- __ jmp(dispatch);
- }
- __ bind(no_mdo);
- // Increment backedge counter in MethodCounters*
- __ movptr(rcx, Address(rcx, Method::method_counters_offset()));
- const Address mask(rcx, in_bytes(MethodCounters::backedge_mask_offset()));
- __ increment_mask_and_jump(Address(rcx, be_offset), increment, mask,
- rax, false, Assembler::zero, &backedge_counter_overflow);
- } else { // not TieredCompilation
- // increment counter
- __ movptr(rcx, Address(rcx, Method::method_counters_offset()));
- __ movl(rax, Address(rcx, be_offset)); // load backedge counter
- __ incrementl(rax, InvocationCounter::count_increment); // increment counter
- __ movl(Address(rcx, be_offset), rax); // store counter
-
- __ movl(rax, Address(rcx, inv_offset)); // load invocation counter
-
- __ andl(rax, InvocationCounter::count_mask_value); // and the status bits
- __ addl(rax, Address(rcx, be_offset)); // add both counters
-
- if (ProfileInterpreter) {
- // Test to see if we should create a method data oop
- __ cmp32(rax, Address(rcx, in_bytes(MethodCounters::interpreter_profile_limit_offset())));
- __ jcc(Assembler::less, dispatch);
-
- // if no method data exists, go to profile method
- __ test_method_data_pointer(rax, profile_method);
-
- if (UseOnStackReplacement) {
- // check for overflow against rbx, which is the MDO taken count
- __ cmp32(rbx, Address(rcx, in_bytes(MethodCounters::interpreter_backward_branch_limit_offset())));
- __ jcc(Assembler::below, dispatch);
-
- // When ProfileInterpreter is on, the backedge_count comes from the
- // MethodData*, which value does not get reset on the call to
- // frequency_counter_overflow(). To avoid excessive calls to the overflow
- // routine while the method is being compiled, add a second test to make
- // sure the overflow function is called only once every overflow_frequency.
- const int overflow_frequency = 1024;
- __ andptr(rbx, overflow_frequency-1);
- __ jcc(Assembler::zero, backedge_counter_overflow);
- }
- } else {
- if (UseOnStackReplacement) {
- // check for overflow against rax, which is the sum of the counters
- __ cmp32(rax, Address(rcx, in_bytes(MethodCounters::interpreter_backward_branch_limit_offset())));
- __ jcc(Assembler::aboveEqual, backedge_counter_overflow);
-
- }
- }
- }
- __ bind(dispatch);
- }
-
- // Pre-load the next target bytecode into EBX
- __ load_unsigned_byte(rbx, Address(rsi, 0));
-
- // continue with the bytecode @ target
- // rax,: return bci for jsr's, unused otherwise
- // rbx,: target bytecode
- // rsi: target bcp
- __ dispatch_only(vtos);
-
- if (UseLoopCounter) {
- if (ProfileInterpreter) {
- // Out-of-line code to allocate method data oop.
- __ bind(profile_method);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method));
- __ load_unsigned_byte(rbx, Address(rsi, 0)); // restore target bytecode
- __ set_method_data_pointer_for_bcp();
- __ jmp(dispatch);
- }
-
- if (UseOnStackReplacement) {
-
- // invocation counter overflow
- __ bind(backedge_counter_overflow);
- __ negptr(rdx);
- __ addptr(rdx, rsi); // branch bcp
- call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rdx);
- __ load_unsigned_byte(rbx, Address(rsi, 0)); // restore target bytecode
-
- // rax,: osr nmethod (osr ok) or NULL (osr not possible)
- // rbx,: target bytecode
- // rdx: scratch
- // rdi: locals pointer
- // rsi: bcp
- __ testptr(rax, rax); // test result
- __ jcc(Assembler::zero, dispatch); // no osr if null
- // nmethod may have been invalidated (VM may block upon call_VM return)
- __ cmpb(Address(rax, nmethod::state_offset()), nmethod::in_use);
- __ jcc(Assembler::notEqual, dispatch);
-
- // We have the address of an on stack replacement routine in rax,
- // We need to prepare to execute the OSR method. First we must
- // migrate the locals and monitors off of the stack.
-
- __ mov(rbx, rax); // save the nmethod
-
- __ get_thread(rcx);
- call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin));
- // rax, is OSR buffer, move it to expected parameter location
- __ mov(rcx, rax);
-
- // pop the interpreter frame
- __ movptr(rdx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp
- __ leave(); // remove frame anchor
- __ pop(rdi); // get return address
- __ mov(rsp, rdx); // set sp to sender sp
-
- // Align stack pointer for compiled code (note that caller is
- // responsible for undoing this fixup by remembering the old SP
- // in an rbp,-relative location)
- __ andptr(rsp, -(StackAlignmentInBytes));
-
- // push the (possibly adjusted) return address
- __ push(rdi);
-
- // and begin the OSR nmethod
- __ jmp(Address(rbx, nmethod::osr_entry_point_offset()));
- }
- }
-}
-
-
-void TemplateTable::if_0cmp(Condition cc) {
- transition(itos, vtos);
- // assume branch is more often taken than not (loops use backward branches)
- Label not_taken;
- __ testl(rax, rax);
- __ jcc(j_not(cc), not_taken);
- branch(false, false);
- __ bind(not_taken);
- __ profile_not_taken_branch(rax);
-}
-
-
-void TemplateTable::if_icmp(Condition cc) {
- transition(itos, vtos);
- // assume branch is more often taken than not (loops use backward branches)
- Label not_taken;
- __ pop_i(rdx);
- __ cmpl(rdx, rax);
- __ jcc(j_not(cc), not_taken);
- branch(false, false);
- __ bind(not_taken);
- __ profile_not_taken_branch(rax);
-}
-
-
-void TemplateTable::if_nullcmp(Condition cc) {
- transition(atos, vtos);
- // assume branch is more often taken than not (loops use backward branches)
- Label not_taken;
- __ testptr(rax, rax);
- __ jcc(j_not(cc), not_taken);
- branch(false, false);
- __ bind(not_taken);
- __ profile_not_taken_branch(rax);
-}
-
-
-void TemplateTable::if_acmp(Condition cc) {
- transition(atos, vtos);
- // assume branch is more often taken than not (loops use backward branches)
- Label not_taken;
- __ pop_ptr(rdx);
- __ cmpptr(rdx, rax);
- __ jcc(j_not(cc), not_taken);
- branch(false, false);
- __ bind(not_taken);
- __ profile_not_taken_branch(rax);
-}
-
-
-void TemplateTable::ret() {
- transition(vtos, vtos);
- locals_index(rbx);
- __ movptr(rbx, iaddress(rbx)); // get return bci, compute return bcp
- __ profile_ret(rbx, rcx);
- __ get_method(rax);
- __ movptr(rsi, Address(rax, Method::const_offset()));
- __ lea(rsi, Address(rsi, rbx, Address::times_1,
- ConstMethod::codes_offset()));
- __ dispatch_next(vtos);
-}
-
-
-void TemplateTable::wide_ret() {
- transition(vtos, vtos);
- locals_index_wide(rbx);
- __ movptr(rbx, iaddress(rbx)); // get return bci, compute return bcp
- __ profile_ret(rbx, rcx);
- __ get_method(rax);
- __ movptr(rsi, Address(rax, Method::const_offset()));
- __ lea(rsi, Address(rsi, rbx, Address::times_1, ConstMethod::codes_offset()));
- __ dispatch_next(vtos);
-}
-
-
-void TemplateTable::tableswitch() {
- Label default_case, continue_execution;
- transition(itos, vtos);
- // align rsi
- __ lea(rbx, at_bcp(wordSize));
- __ andptr(rbx, -wordSize);
- // load lo & hi
- __ movl(rcx, Address(rbx, 1 * wordSize));
- __ movl(rdx, Address(rbx, 2 * wordSize));
- __ bswapl(rcx);
- __ bswapl(rdx);
- // check against lo & hi
- __ cmpl(rax, rcx);
- __ jccb(Assembler::less, default_case);
- __ cmpl(rax, rdx);
- __ jccb(Assembler::greater, default_case);
- // lookup dispatch offset
- __ subl(rax, rcx);
- __ movl(rdx, Address(rbx, rax, Address::times_4, 3 * BytesPerInt));
- __ profile_switch_case(rax, rbx, rcx);
- // continue execution
- __ bind(continue_execution);
- __ bswapl(rdx);
- __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1));
- __ addptr(rsi, rdx);
- __ dispatch_only(vtos);
- // handle default
- __ bind(default_case);
- __ profile_switch_default(rax);
- __ movl(rdx, Address(rbx, 0));
- __ jmp(continue_execution);
-}
-
-
-void TemplateTable::lookupswitch() {
- transition(itos, itos);
- __ stop("lookupswitch bytecode should have been rewritten");
-}
-
-
-void TemplateTable::fast_linearswitch() {
- transition(itos, vtos);
- Label loop_entry, loop, found, continue_execution;
- // bswapl rax, so we can avoid bswapping the table entries
- __ bswapl(rax);
- // align rsi
- __ lea(rbx, at_bcp(wordSize)); // btw: should be able to get rid of this instruction (change offsets below)
- __ andptr(rbx, -wordSize);
- // set counter
- __ movl(rcx, Address(rbx, wordSize));
- __ bswapl(rcx);
- __ jmpb(loop_entry);
- // table search
- __ bind(loop);
- __ cmpl(rax, Address(rbx, rcx, Address::times_8, 2 * wordSize));
- __ jccb(Assembler::equal, found);
- __ bind(loop_entry);
- __ decrementl(rcx);
- __ jcc(Assembler::greaterEqual, loop);
- // default case
- __ profile_switch_default(rax);
- __ movl(rdx, Address(rbx, 0));
- __ jmpb(continue_execution);
- // entry found -> get offset
- __ bind(found);
- __ movl(rdx, Address(rbx, rcx, Address::times_8, 3 * wordSize));
- __ profile_switch_case(rcx, rax, rbx);
- // continue execution
- __ bind(continue_execution);
- __ bswapl(rdx);
- __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1));
- __ addptr(rsi, rdx);
- __ dispatch_only(vtos);
-}
-
-
-void TemplateTable::fast_binaryswitch() {
- transition(itos, vtos);
- // Implementation using the following core algorithm:
- //
- // int binary_search(int key, LookupswitchPair* array, int n) {
- // // Binary search according to "Methodik des Programmierens" by
- // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985.
- // int i = 0;
- // int j = n;
- // while (i+1 < j) {
- // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q)
- // // with Q: for all i: 0 <= i < n: key < a[i]
- // // where a stands for the array and assuming that the (inexisting)
- // // element a[n] is infinitely big.
- // int h = (i + j) >> 1;
- // // i < h < j
- // if (key < array[h].fast_match()) {
- // j = h;
- // } else {
- // i = h;
- // }
- // }
- // // R: a[i] <= key < a[i+1] or Q
- // // (i.e., if key is within array, i is the correct index)
- // return i;
- // }
-
- // register allocation
- const Register key = rax; // already set (tosca)
- const Register array = rbx;
- const Register i = rcx;
- const Register j = rdx;
- const Register h = rdi; // needs to be restored
- const Register temp = rsi;
- // setup array
- __ save_bcp();
-
- __ lea(array, at_bcp(3*wordSize)); // btw: should be able to get rid of this instruction (change offsets below)
- __ andptr(array, -wordSize);
- // initialize i & j
- __ xorl(i, i); // i = 0;
- __ movl(j, Address(array, -wordSize)); // j = length(array);
- // Convert j into native byteordering
- __ bswapl(j);
- // and start
- Label entry;
- __ jmp(entry);
-
- // binary search loop
- { Label loop;
- __ bind(loop);
- // int h = (i + j) >> 1;
- __ leal(h, Address(i, j, Address::times_1)); // h = i + j;
- __ sarl(h, 1); // h = (i + j) >> 1;
- // if (key < array[h].fast_match()) {
- // j = h;
- // } else {
- // i = h;
- // }
- // Convert array[h].match to native byte-ordering before compare
- __ movl(temp, Address(array, h, Address::times_8, 0*wordSize));
- __ bswapl(temp);
- __ cmpl(key, temp);
- // j = h if (key < array[h].fast_match())
- __ cmov32(Assembler::less , j, h);
- // i = h if (key >= array[h].fast_match())
- __ cmov32(Assembler::greaterEqual, i, h);
- // while (i+1 < j)
- __ bind(entry);
- __ leal(h, Address(i, 1)); // i+1
- __ cmpl(h, j); // i+1 < j
- __ jcc(Assembler::less, loop);
- }
-
- // end of binary search, result index is i (must check again!)
- Label default_case;
- // Convert array[i].match to native byte-ordering before compare
- __ movl(temp, Address(array, i, Address::times_8, 0*wordSize));
- __ bswapl(temp);
- __ cmpl(key, temp);
- __ jcc(Assembler::notEqual, default_case);
-
- // entry found -> j = offset
- __ movl(j , Address(array, i, Address::times_8, 1*wordSize));
- __ profile_switch_case(i, key, array);
- __ bswapl(j);
- LP64_ONLY(__ movslq(j, j));
- __ restore_bcp();
- __ restore_locals(); // restore rdi
- __ load_unsigned_byte(rbx, Address(rsi, j, Address::times_1));
-
- __ addptr(rsi, j);
- __ dispatch_only(vtos);
-
- // default case -> j = default offset
- __ bind(default_case);
- __ profile_switch_default(i);
- __ movl(j, Address(array, -2*wordSize));
- __ bswapl(j);
- LP64_ONLY(__ movslq(j, j));
- __ restore_bcp();
- __ restore_locals(); // restore rdi
- __ load_unsigned_byte(rbx, Address(rsi, j, Address::times_1));
- __ addptr(rsi, j);
- __ dispatch_only(vtos);
-}
-
-
-void TemplateTable::_return(TosState state) {
- transition(state, state);
- assert(_desc->calls_vm(), "inconsistent calls_vm information"); // call in remove_activation
-
- if (_desc->bytecode() == Bytecodes::_return_register_finalizer) {
- assert(state == vtos, "only valid state");
- __ movptr(rax, aaddress(0));
- __ load_klass(rdi, rax);
- __ movl(rdi, Address(rdi, Klass::access_flags_offset()));
- __ testl(rdi, JVM_ACC_HAS_FINALIZER);
- Label skip_register_finalizer;
- __ jcc(Assembler::zero, skip_register_finalizer);
-
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), rax);
-
- __ bind(skip_register_finalizer);
- }
-
- __ remove_activation(state, rsi);
- __ jmp(rsi);
-}
-
-
-// ----------------------------------------------------------------------------
-// Volatile variables demand their effects be made known to all CPU's in
-// order. Store buffers on most chips allow reads & writes to reorder; the
-// JMM's ReadAfterWrite.java test fails in -Xint mode without some kind of
-// memory barrier (i.e., it's not sufficient that the interpreter does not
-// reorder volatile references, the hardware also must not reorder them).
-//
-// According to the new Java Memory Model (JMM):
-// (1) All volatiles are serialized wrt to each other.
-// ALSO reads & writes act as aquire & release, so:
-// (2) A read cannot let unrelated NON-volatile memory refs that happen after
-// the read float up to before the read. It's OK for non-volatile memory refs
-// that happen before the volatile read to float down below it.
-// (3) Similar a volatile write cannot let unrelated NON-volatile memory refs
-// that happen BEFORE the write float down to after the write. It's OK for
-// non-volatile memory refs that happen after the volatile write to float up
-// before it.
-//
-// We only put in barriers around volatile refs (they are expensive), not
-// _between_ memory refs (that would require us to track the flavor of the
-// previous memory refs). Requirements (2) and (3) require some barriers
-// before volatile stores and after volatile loads. These nearly cover
-// requirement (1) but miss the volatile-store-volatile-load case. This final
-// case is placed after volatile-stores although it could just as well go
-// before volatile-loads.
-void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits order_constraint ) {
- // Helper function to insert a is-volatile test and memory barrier
- if( !os::is_MP() ) return; // Not needed on single CPU
- __ membar(order_constraint);
-}
-
-void TemplateTable::resolve_cache_and_index(int byte_no,
- Register Rcache,
- Register index,
- size_t index_size) {
- const Register temp = rbx;
- assert_different_registers(Rcache, index, temp);
-
- Label resolved;
- assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
- __ get_cache_and_index_and_bytecode_at_bcp(Rcache, index, temp, byte_no, 1, index_size);
- __ cmpl(temp, (int) bytecode()); // have we resolved this bytecode?
- __ jcc(Assembler::equal, resolved);
-
- // resolve first time through
- address entry;
- switch (bytecode()) {
- case Bytecodes::_getstatic : // fall through
- case Bytecodes::_putstatic : // fall through
- case Bytecodes::_getfield : // fall through
- case Bytecodes::_putfield : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put); break;
- case Bytecodes::_invokevirtual : // fall through
- case Bytecodes::_invokespecial : // fall through
- case Bytecodes::_invokestatic : // fall through
- case Bytecodes::_invokeinterface: entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); break;
- case Bytecodes::_invokehandle : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokehandle); break;
- case Bytecodes::_invokedynamic : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic); break;
- default:
- fatal(err_msg("unexpected bytecode: %s", Bytecodes::name(bytecode())));
- break;
- }
- __ movl(temp, (int)bytecode());
- __ call_VM(noreg, entry, temp);
- // Update registers with resolved info
- __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size);
- __ bind(resolved);
-}
-
-
-// The cache and index registers must be set before call
-void TemplateTable::load_field_cp_cache_entry(Register obj,
- Register cache,
- Register index,
- Register off,
- Register flags,
- bool is_static = false) {
- assert_different_registers(cache, index, flags, off);
-
- ByteSize cp_base_offset = ConstantPoolCache::base_offset();
- // Field offset
- __ movptr(off, Address(cache, index, Address::times_ptr,
- in_bytes(cp_base_offset + ConstantPoolCacheEntry::f2_offset())));
- // Flags
- __ movl(flags, Address(cache, index, Address::times_ptr,
- in_bytes(cp_base_offset + ConstantPoolCacheEntry::flags_offset())));
-
- // klass overwrite register
- if (is_static) {
- __ movptr(obj, Address(cache, index, Address::times_ptr,
- in_bytes(cp_base_offset + ConstantPoolCacheEntry::f1_offset())));
- const int mirror_offset = in_bytes(Klass::java_mirror_offset());
- __ movptr(obj, Address(obj, mirror_offset));
- }
-}
-
-void TemplateTable::load_invoke_cp_cache_entry(int byte_no,
- Register method,
- Register itable_index,
- Register flags,
- bool is_invokevirtual,
- bool is_invokevfinal, /*unused*/
- bool is_invokedynamic) {
- // setup registers
- const Register cache = rcx;
- const Register index = rdx;
- assert_different_registers(method, flags);
- assert_different_registers(method, cache, index);
- assert_different_registers(itable_index, flags);
- assert_different_registers(itable_index, cache, index);
- // determine constant pool cache field offsets
- assert(is_invokevirtual == (byte_no == f2_byte), "is_invokevirtual flag redundant");
- const int method_offset = in_bytes(
- ConstantPoolCache::base_offset() +
- ((byte_no == f2_byte)
- ? ConstantPoolCacheEntry::f2_offset()
- : ConstantPoolCacheEntry::f1_offset()));
- const int flags_offset = in_bytes(ConstantPoolCache::base_offset() +
- ConstantPoolCacheEntry::flags_offset());
- // access constant pool cache fields
- const int index_offset = in_bytes(ConstantPoolCache::base_offset() +
- ConstantPoolCacheEntry::f2_offset());
-
- size_t index_size = (is_invokedynamic ? sizeof(u4) : sizeof(u2));
- resolve_cache_and_index(byte_no, cache, index, index_size);
- __ movptr(method, Address(cache, index, Address::times_ptr, method_offset));
-
- if (itable_index != noreg) {
- __ movptr(itable_index, Address(cache, index, Address::times_ptr, index_offset));
- }
- __ movl(flags, Address(cache, index, Address::times_ptr, flags_offset));
-}
-
-
-// The registers cache and index expected to be set before call.
-// Correct values of the cache and index registers are preserved.
-void TemplateTable::jvmti_post_field_access(Register cache,
- Register index,
- bool is_static,
- bool has_tos) {
- if (JvmtiExport::can_post_field_access()) {
- // Check to see if a field access watch has been set before we take
- // the time to call into the VM.
- Label L1;
- assert_different_registers(cache, index, rax);
- __ mov32(rax, ExternalAddress((address) JvmtiExport::get_field_access_count_addr()));
- __ testl(rax,rax);
- __ jcc(Assembler::zero, L1);
-
- // cache entry pointer
- __ addptr(cache, in_bytes(ConstantPoolCache::base_offset()));
- __ shll(index, LogBytesPerWord);
- __ addptr(cache, index);
- if (is_static) {
- __ xorptr(rax, rax); // NULL object reference
- } else {
- __ pop(atos); // Get the object
- __ verify_oop(rax);
- __ push(atos); // Restore stack state
- }
- // rax,: object pointer or NULL
- // cache: cache entry pointer
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access),
- rax, cache);
- __ get_cache_and_index_at_bcp(cache, index, 1);
- __ bind(L1);
- }
-}
-
-void TemplateTable::pop_and_check_object(Register r) {
- __ pop_ptr(r);
- __ null_check(r); // for field access must check obj.
- __ verify_oop(r);
-}
-
-void TemplateTable::getfield_or_static(int byte_no, bool is_static) {
- transition(vtos, vtos);
-
- const Register cache = rcx;
- const Register index = rdx;
- const Register obj = rcx;
- const Register off = rbx;
- const Register flags = rax;
-
- resolve_cache_and_index(byte_no, cache, index, sizeof(u2));
- jvmti_post_field_access(cache, index, is_static, false);
- load_field_cp_cache_entry(obj, cache, index, off, flags, is_static);
-
- if (!is_static) pop_and_check_object(obj);
-
- const Address lo(obj, off, Address::times_1, 0*wordSize);
- const Address hi(obj, off, Address::times_1, 1*wordSize);
-
- Label Done, notByte, notInt, notShort, notChar, notLong, notFloat, notObj, notDouble;
-
- __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift);
- assert(btos == 0, "change code, btos != 0");
- // btos
- __ andptr(flags, ConstantPoolCacheEntry::tos_state_mask);
- __ jcc(Assembler::notZero, notByte);
-
- __ load_signed_byte(rax, lo );
- __ push(btos);
- // Rewrite bytecode to be faster
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_bgetfield, rcx, rbx);
- }
- __ jmp(Done);
-
- __ bind(notByte);
- // itos
- __ cmpl(flags, itos );
- __ jcc(Assembler::notEqual, notInt);
-
- __ movl(rax, lo );
- __ push(itos);
- // Rewrite bytecode to be faster
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_igetfield, rcx, rbx);
- }
- __ jmp(Done);
-
- __ bind(notInt);
- // atos
- __ cmpl(flags, atos );
- __ jcc(Assembler::notEqual, notObj);
-
- __ movl(rax, lo );
- __ push(atos);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_agetfield, rcx, rbx);
- }
- __ jmp(Done);
-
- __ bind(notObj);
- // ctos
- __ cmpl(flags, ctos );
- __ jcc(Assembler::notEqual, notChar);
-
- __ load_unsigned_short(rax, lo );
- __ push(ctos);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_cgetfield, rcx, rbx);
- }
- __ jmp(Done);
-
- __ bind(notChar);
- // stos
- __ cmpl(flags, stos );
- __ jcc(Assembler::notEqual, notShort);
-
- __ load_signed_short(rax, lo );
- __ push(stos);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_sgetfield, rcx, rbx);
- }
- __ jmp(Done);
-
- __ bind(notShort);
- // ltos
- __ cmpl(flags, ltos );
- __ jcc(Assembler::notEqual, notLong);
-
- // Generate code as if volatile. There just aren't enough registers to
- // save that information and this code is faster than the test.
- __ fild_d(lo); // Must load atomically
- __ subptr(rsp,2*wordSize); // Make space for store
- __ fistp_d(Address(rsp,0));
- __ pop(rax);
- __ pop(rdx);
-
- __ push(ltos);
- // Don't rewrite to _fast_lgetfield for potential volatile case.
- __ jmp(Done);
-
- __ bind(notLong);
- // ftos
- __ cmpl(flags, ftos );
- __ jcc(Assembler::notEqual, notFloat);
-
- __ fld_s(lo);
- __ push(ftos);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_fgetfield, rcx, rbx);
- }
- __ jmp(Done);
-
- __ bind(notFloat);
- // dtos
- __ cmpl(flags, dtos );
- __ jcc(Assembler::notEqual, notDouble);
-
- __ fld_d(lo);
- __ push(dtos);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_dgetfield, rcx, rbx);
- }
- __ jmpb(Done);
-
- __ bind(notDouble);
-
- __ stop("Bad state");
-
- __ bind(Done);
- // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO).
- // volatile_barrier( );
-}
-
-
-void TemplateTable::getfield(int byte_no) {
- getfield_or_static(byte_no, false);
-}
-
-
-void TemplateTable::getstatic(int byte_no) {
- getfield_or_static(byte_no, true);
-}
-
-// The registers cache and index expected to be set before call.
-// The function may destroy various registers, just not the cache and index registers.
-void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) {
-
- ByteSize cp_base_offset = ConstantPoolCache::base_offset();
-
- if (JvmtiExport::can_post_field_modification()) {
- // Check to see if a field modification watch has been set before we take
- // the time to call into the VM.
- Label L1;
- assert_different_registers(cache, index, rax);
- __ mov32(rax, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr()));
- __ testl(rax, rax);
- __ jcc(Assembler::zero, L1);
-
- // The cache and index registers have been already set.
- // This allows to eliminate this call but the cache and index
- // registers have to be correspondingly used after this line.
- __ get_cache_and_index_at_bcp(rax, rdx, 1);
-
- if (is_static) {
- // Life is simple. Null out the object pointer.
- __ xorptr(rbx, rbx);
- } else {
- // Life is harder. The stack holds the value on top, followed by the object.
- // We don't know the size of the value, though; it could be one or two words
- // depending on its type. As a result, we must find the type to determine where
- // the object is.
- Label two_word, valsize_known;
- __ movl(rcx, Address(rax, rdx, Address::times_ptr, in_bytes(cp_base_offset +
- ConstantPoolCacheEntry::flags_offset())));
- __ mov(rbx, rsp);
- __ shrl(rcx, ConstantPoolCacheEntry::tos_state_shift);
- // Make sure we don't need to mask rcx after the above shift
- ConstantPoolCacheEntry::verify_tos_state_shift();
- __ cmpl(rcx, ltos);
- __ jccb(Assembler::equal, two_word);
- __ cmpl(rcx, dtos);
- __ jccb(Assembler::equal, two_word);
- __ addptr(rbx, Interpreter::expr_offset_in_bytes(1)); // one word jvalue (not ltos, dtos)
- __ jmpb(valsize_known);
-
- __ bind(two_word);
- __ addptr(rbx, Interpreter::expr_offset_in_bytes(2)); // two words jvalue
-
- __ bind(valsize_known);
- // setup object pointer
- __ movptr(rbx, Address(rbx, 0));
- }
- // cache entry pointer
- __ addptr(rax, in_bytes(cp_base_offset));
- __ shll(rdx, LogBytesPerWord);
- __ addptr(rax, rdx);
- // object (tos)
- __ mov(rcx, rsp);
- // rbx,: object pointer set up above (NULL if static)
- // rax,: cache entry pointer
- // rcx: jvalue object on the stack
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification),
- rbx, rax, rcx);
- __ get_cache_and_index_at_bcp(cache, index, 1);
- __ bind(L1);
- }
-}
-
-
-void TemplateTable::putfield_or_static(int byte_no, bool is_static) {
- transition(vtos, vtos);
-
- const Register cache = rcx;
- const Register index = rdx;
- const Register obj = rcx;
- const Register off = rbx;
- const Register flags = rax;
-
- resolve_cache_and_index(byte_no, cache, index, sizeof(u2));
- jvmti_post_field_mod(cache, index, is_static);
- load_field_cp_cache_entry(obj, cache, index, off, flags, is_static);
-
- // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO).
- // volatile_barrier( );
-
- Label notVolatile, Done;
- __ movl(rdx, flags);
- __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift);
- __ andl(rdx, 0x1);
-
- // field addresses
- const Address lo(obj, off, Address::times_1, 0*wordSize);
- const Address hi(obj, off, Address::times_1, 1*wordSize);
-
- Label notByte, notInt, notShort, notChar, notLong, notFloat, notObj, notDouble;
-
- __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift);
- assert(btos == 0, "change code, btos != 0");
- __ andl(flags, ConstantPoolCacheEntry::tos_state_mask);
- __ jcc(Assembler::notZero, notByte);
-
- // btos
- {
- __ pop(btos);
- if (!is_static) pop_and_check_object(obj);
- __ movb(lo, rax);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_bputfield, rcx, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
- __ bind(notByte);
- __ cmpl(flags, itos);
- __ jcc(Assembler::notEqual, notInt);
-
- // itos
- {
- __ pop(itos);
- if (!is_static) pop_and_check_object(obj);
- __ movl(lo, rax);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_iputfield, rcx, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
- __ bind(notInt);
- __ cmpl(flags, atos);
- __ jcc(Assembler::notEqual, notObj);
-
- // atos
- {
- __ pop(atos);
- if (!is_static) pop_and_check_object(obj);
- do_oop_store(_masm, lo, rax, _bs->kind(), false);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_aputfield, rcx, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
- __ bind(notObj);
- __ cmpl(flags, ctos);
- __ jcc(Assembler::notEqual, notChar);
-
- // ctos
- {
- __ pop(ctos);
- if (!is_static) pop_and_check_object(obj);
- __ movw(lo, rax);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_cputfield, rcx, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
- __ bind(notChar);
- __ cmpl(flags, stos);
- __ jcc(Assembler::notEqual, notShort);
-
- // stos
- {
- __ pop(stos);
- if (!is_static) pop_and_check_object(obj);
- __ movw(lo, rax);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_sputfield, rcx, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
- __ bind(notShort);
- __ cmpl(flags, ltos);
- __ jcc(Assembler::notEqual, notLong);
-
- // ltos
- {
- Label notVolatileLong;
- __ testl(rdx, rdx);
- __ jcc(Assembler::zero, notVolatileLong);
-
- __ pop(ltos); // overwrites rdx, do this after testing volatile.
- if (!is_static) pop_and_check_object(obj);
-
- // Replace with real volatile test
- __ push(rdx);
- __ push(rax); // Must update atomically with FIST
- __ fild_d(Address(rsp,0)); // So load into FPU register
- __ fistp_d(lo); // and put into memory atomically
- __ addptr(rsp, 2*wordSize);
- // volatile_barrier();
- volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad |
- Assembler::StoreStore));
- // Don't rewrite volatile version
- __ jmp(notVolatile);
-
- __ bind(notVolatileLong);
-
- __ pop(ltos); // overwrites rdx
- if (!is_static) pop_and_check_object(obj);
- NOT_LP64(__ movptr(hi, rdx));
- __ movptr(lo, rax);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_lputfield, rcx, rbx, true, byte_no);
- }
- __ jmp(notVolatile);
- }
-
- __ bind(notLong);
- __ cmpl(flags, ftos);
- __ jcc(Assembler::notEqual, notFloat);
-
- // ftos
- {
- __ pop(ftos);
- if (!is_static) pop_and_check_object(obj);
- __ fstp_s(lo);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_fputfield, rcx, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
- __ bind(notFloat);
-#ifdef ASSERT
- __ cmpl(flags, dtos);
- __ jcc(Assembler::notEqual, notDouble);
-#endif
-
- // dtos
- {
- __ pop(dtos);
- if (!is_static) pop_and_check_object(obj);
- __ fstp_d(lo);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_dputfield, rcx, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
-#ifdef ASSERT
- __ bind(notDouble);
- __ stop("Bad state");
-#endif
-
- __ bind(Done);
-
- // Check for volatile store
- __ testl(rdx, rdx);
- __ jcc(Assembler::zero, notVolatile);
- volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad |
- Assembler::StoreStore));
- __ bind(notVolatile);
-}
-
-
-void TemplateTable::putfield(int byte_no) {
- putfield_or_static(byte_no, false);
-}
-
-
-void TemplateTable::putstatic(int byte_no) {
- putfield_or_static(byte_no, true);
-}
-
-void TemplateTable::jvmti_post_fast_field_mod() {
- if (JvmtiExport::can_post_field_modification()) {
- // Check to see if a field modification watch has been set before we take
- // the time to call into the VM.
- Label L2;
- __ mov32(rcx, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr()));
- __ testl(rcx,rcx);
- __ jcc(Assembler::zero, L2);
- __ pop_ptr(rbx); // copy the object pointer from tos
- __ verify_oop(rbx);
- __ push_ptr(rbx); // put the object pointer back on tos
-
- // Save tos values before call_VM() clobbers them. Since we have
- // to do it for every data type, we use the saved values as the
- // jvalue object.
- switch (bytecode()) { // load values into the jvalue object
- case Bytecodes::_fast_aputfield: __ push_ptr(rax); break;
- case Bytecodes::_fast_bputfield: // fall through
- case Bytecodes::_fast_sputfield: // fall through
- case Bytecodes::_fast_cputfield: // fall through
- case Bytecodes::_fast_iputfield: __ push_i(rax); break;
- case Bytecodes::_fast_dputfield: __ push_d(); break;
- case Bytecodes::_fast_fputfield: __ push_f(); break;
- case Bytecodes::_fast_lputfield: __ push_l(rax); break;
-
- default:
- ShouldNotReachHere();
- }
- __ mov(rcx, rsp); // points to jvalue on the stack
- // access constant pool cache entry
- __ get_cache_entry_pointer_at_bcp(rax, rdx, 1);
- __ verify_oop(rbx);
- // rbx,: object pointer copied above
- // rax,: cache entry pointer
- // rcx: jvalue object on the stack
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), rbx, rax, rcx);
-
- switch (bytecode()) { // restore tos values
- case Bytecodes::_fast_aputfield: __ pop_ptr(rax); break;
- case Bytecodes::_fast_bputfield: // fall through
- case Bytecodes::_fast_sputfield: // fall through
- case Bytecodes::_fast_cputfield: // fall through
- case Bytecodes::_fast_iputfield: __ pop_i(rax); break;
- case Bytecodes::_fast_dputfield: __ pop_d(); break;
- case Bytecodes::_fast_fputfield: __ pop_f(); break;
- case Bytecodes::_fast_lputfield: __ pop_l(rax); break;
- }
- __ bind(L2);
- }
-}
-
-void TemplateTable::fast_storefield(TosState state) {
- transition(state, vtos);
-
- ByteSize base = ConstantPoolCache::base_offset();
-
- jvmti_post_fast_field_mod();
-
- // access constant pool cache
- __ get_cache_and_index_at_bcp(rcx, rbx, 1);
-
- // test for volatile with rdx but rdx is tos register for lputfield.
- if (bytecode() == Bytecodes::_fast_lputfield) __ push(rdx);
- __ movl(rdx, Address(rcx, rbx, Address::times_ptr, in_bytes(base +
- ConstantPoolCacheEntry::flags_offset())));
-
- // replace index with field offset from cache entry
- __ movptr(rbx, Address(rcx, rbx, Address::times_ptr, in_bytes(base + ConstantPoolCacheEntry::f2_offset())));
-
- // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO).
- // volatile_barrier( );
-
- Label notVolatile, Done;
- __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift);
- __ andl(rdx, 0x1);
- // Check for volatile store
- __ testl(rdx, rdx);
- __ jcc(Assembler::zero, notVolatile);
-
- if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx);
-
- // Get object from stack
- pop_and_check_object(rcx);
-
- // field addresses
- const Address lo(rcx, rbx, Address::times_1, 0*wordSize);
- const Address hi(rcx, rbx, Address::times_1, 1*wordSize);
-
- // access field
- switch (bytecode()) {
- case Bytecodes::_fast_bputfield: __ movb(lo, rax); break;
- case Bytecodes::_fast_sputfield: // fall through
- case Bytecodes::_fast_cputfield: __ movw(lo, rax); break;
- case Bytecodes::_fast_iputfield: __ movl(lo, rax); break;
- case Bytecodes::_fast_lputfield:
- NOT_LP64(__ movptr(hi, rdx));
- __ movptr(lo, rax);
- break;
- case Bytecodes::_fast_fputfield: __ fstp_s(lo); break;
- case Bytecodes::_fast_dputfield: __ fstp_d(lo); break;
- case Bytecodes::_fast_aputfield: {
- do_oop_store(_masm, lo, rax, _bs->kind(), false);
- break;
- }
- default:
- ShouldNotReachHere();
- }
-
- Label done;
- volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad |
- Assembler::StoreStore));
- // Barriers are so large that short branch doesn't reach!
- __ jmp(done);
-
- // Same code as above, but don't need rdx to test for volatile.
- __ bind(notVolatile);
-
- if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx);
-
- // Get object from stack
- pop_and_check_object(rcx);
-
- // access field
- switch (bytecode()) {
- case Bytecodes::_fast_bputfield: __ movb(lo, rax); break;
- case Bytecodes::_fast_sputfield: // fall through
- case Bytecodes::_fast_cputfield: __ movw(lo, rax); break;
- case Bytecodes::_fast_iputfield: __ movl(lo, rax); break;
- case Bytecodes::_fast_lputfield:
- NOT_LP64(__ movptr(hi, rdx));
- __ movptr(lo, rax);
- break;
- case Bytecodes::_fast_fputfield: __ fstp_s(lo); break;
- case Bytecodes::_fast_dputfield: __ fstp_d(lo); break;
- case Bytecodes::_fast_aputfield: {
- do_oop_store(_masm, lo, rax, _bs->kind(), false);
- break;
- }
- default:
- ShouldNotReachHere();
- }
- __ bind(done);
-}
-
-
-void TemplateTable::fast_accessfield(TosState state) {
- transition(atos, state);
-
- // do the JVMTI work here to avoid disturbing the register state below
- if (JvmtiExport::can_post_field_access()) {
- // Check to see if a field access watch has been set before we take
- // the time to call into the VM.
- Label L1;
- __ mov32(rcx, ExternalAddress((address) JvmtiExport::get_field_access_count_addr()));
- __ testl(rcx,rcx);
- __ jcc(Assembler::zero, L1);
- // access constant pool cache entry
- __ get_cache_entry_pointer_at_bcp(rcx, rdx, 1);
- __ push_ptr(rax); // save object pointer before call_VM() clobbers it
- __ verify_oop(rax);
- // rax,: object pointer copied above
- // rcx: cache entry pointer
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), rax, rcx);
- __ pop_ptr(rax); // restore object pointer
- __ bind(L1);
- }
-
- // access constant pool cache
- __ get_cache_and_index_at_bcp(rcx, rbx, 1);
- // replace index with field offset from cache entry
- __ movptr(rbx, Address(rcx,
- rbx,
- Address::times_ptr,
- in_bytes(ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::f2_offset())));
-
-
- // rax,: object
- __ verify_oop(rax);
- __ null_check(rax);
- // field addresses
- const Address lo = Address(rax, rbx, Address::times_1, 0*wordSize);
- const Address hi = Address(rax, rbx, Address::times_1, 1*wordSize);
-
- // access field
- switch (bytecode()) {
- case Bytecodes::_fast_bgetfield: __ movsbl(rax, lo ); break;
- case Bytecodes::_fast_sgetfield: __ load_signed_short(rax, lo ); break;
- case Bytecodes::_fast_cgetfield: __ load_unsigned_short(rax, lo ); break;
- case Bytecodes::_fast_igetfield: __ movl(rax, lo); break;
- case Bytecodes::_fast_lgetfield: __ stop("should not be rewritten"); break;
- case Bytecodes::_fast_fgetfield: __ fld_s(lo); break;
- case Bytecodes::_fast_dgetfield: __ fld_d(lo); break;
- case Bytecodes::_fast_agetfield: __ movptr(rax, lo); __ verify_oop(rax); break;
- default:
- ShouldNotReachHere();
- }
-
- // Doug Lea believes this is not needed with current Sparcs(TSO) and Intel(PSO)
- // volatile_barrier( );
-}
-
-void TemplateTable::fast_xaccess(TosState state) {
- transition(vtos, state);
- // get receiver
- __ movptr(rax, aaddress(0));
- // access constant pool cache
- __ get_cache_and_index_at_bcp(rcx, rdx, 2);
- __ movptr(rbx, Address(rcx,
- rdx,
- Address::times_ptr,
- in_bytes(ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::f2_offset())));
- // make sure exception is reported in correct bcp range (getfield is next instruction)
- __ increment(rsi);
- __ null_check(rax);
- const Address lo = Address(rax, rbx, Address::times_1, 0*wordSize);
- if (state == itos) {
- __ movl(rax, lo);
- } else if (state == atos) {
- __ movptr(rax, lo);
- __ verify_oop(rax);
- } else if (state == ftos) {
- __ fld_s(lo);
- } else {
- ShouldNotReachHere();
- }
- __ decrement(rsi);
-}
-
-
-
-//----------------------------------------------------------------------------------------------------
-// Calls
-
-void TemplateTable::count_calls(Register method, Register temp) {
- // implemented elsewhere
- ShouldNotReachHere();
-}
-
-
-void TemplateTable::prepare_invoke(int byte_no,
- Register method, // linked method (or i-klass)
- Register index, // itable index, MethodType, etc.
- Register recv, // if caller wants to see it
- Register flags // if caller wants to test it
- ) {
- // determine flags
- const Bytecodes::Code code = bytecode();
- const bool is_invokeinterface = code == Bytecodes::_invokeinterface;
- const bool is_invokedynamic = code == Bytecodes::_invokedynamic;
- const bool is_invokehandle = code == Bytecodes::_invokehandle;
- const bool is_invokevirtual = code == Bytecodes::_invokevirtual;
- const bool is_invokespecial = code == Bytecodes::_invokespecial;
- const bool load_receiver = (recv != noreg);
- const bool save_flags = (flags != noreg);
- assert(load_receiver == (code != Bytecodes::_invokestatic && code != Bytecodes::_invokedynamic), "");
- assert(save_flags == (is_invokeinterface || is_invokevirtual), "need flags for vfinal");
- assert(flags == noreg || flags == rdx, "");
- assert(recv == noreg || recv == rcx, "");
-
- // setup registers & access constant pool cache
- if (recv == noreg) recv = rcx;
- if (flags == noreg) flags = rdx;
- assert_different_registers(method, index, recv, flags);
-
- // save 'interpreter return address'
- __ save_bcp();
-
- load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual, false, is_invokedynamic);
-
- // maybe push appendix to arguments (just before return address)
- if (is_invokedynamic || is_invokehandle) {
- Label L_no_push;
- __ testl(flags, (1 << ConstantPoolCacheEntry::has_appendix_shift));
- __ jccb(Assembler::zero, L_no_push);
- // Push the appendix as a trailing parameter.
- // This must be done before we get the receiver,
- // since the parameter_size includes it.
- __ push(rbx);
- __ mov(rbx, index);
- assert(ConstantPoolCacheEntry::_indy_resolved_references_appendix_offset == 0, "appendix expected at index+0");
- __ load_resolved_reference_at_index(index, rbx);
- __ pop(rbx);
- __ push(index); // push appendix (MethodType, CallSite, etc.)
- __ bind(L_no_push);
- }
-
- // load receiver if needed (note: no return address pushed yet)
- if (load_receiver) {
- __ movl(recv, flags);
- __ andl(recv, ConstantPoolCacheEntry::parameter_size_mask);
- const int no_return_pc_pushed_yet = -1; // argument slot correction before we push return address
- const int receiver_is_at_end = -1; // back off one slot to get receiver
- Address recv_addr = __ argument_address(recv, no_return_pc_pushed_yet + receiver_is_at_end);
- __ movptr(recv, recv_addr);
- __ verify_oop(recv);
- }
-
- if (save_flags) {
- __ mov(rsi, flags);
- }
-
- // compute return type
- __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift);
- // Make sure we don't need to mask flags after the above shift
- ConstantPoolCacheEntry::verify_tos_state_shift();
- // load return address
- {
- const address table_addr = (address) Interpreter::invoke_return_entry_table_for(code);
- ExternalAddress table(table_addr);
- __ movptr(flags, ArrayAddress(table, Address(noreg, flags, Address::times_ptr)));
- }
-
- // push return address
- __ push(flags);
-
- // Restore flags value from the constant pool cache, and restore rsi
- // for later null checks. rsi is the bytecode pointer
- if (save_flags) {
- __ mov(flags, rsi);
- __ restore_bcp();
- }
-}
-
-
-void TemplateTable::invokevirtual_helper(Register index,
- Register recv,
- Register flags) {
- // Uses temporary registers rax, rdx
- assert_different_registers(index, recv, rax, rdx);
- assert(index == rbx, "");
- assert(recv == rcx, "");
-
- // Test for an invoke of a final method
- Label notFinal;
- __ movl(rax, flags);
- __ andl(rax, (1 << ConstantPoolCacheEntry::is_vfinal_shift));
- __ jcc(Assembler::zero, notFinal);
-
- const Register method = index; // method must be rbx
- assert(method == rbx,
- "Method* must be rbx for interpreter calling convention");
-
- // do the call - the index is actually the method to call
- // that is, f2 is a vtable index if !is_vfinal, else f2 is a Method*
-
- // It's final, need a null check here!
- __ null_check(recv);
-
- // profile this call
- __ profile_final_call(rax);
- __ profile_arguments_type(rax, method, rsi, true);
-
- __ jump_from_interpreted(method, rax);
-
- __ bind(notFinal);
-
- // get receiver klass
- __ null_check(recv, oopDesc::klass_offset_in_bytes());
- __ load_klass(rax, recv);
-
- // profile this call
- __ profile_virtual_call(rax, rdi, rdx);
-
- // get target Method* & entry point
- __ lookup_virtual_method(rax, index, method);
- __ profile_arguments_type(rdx, method, rsi, true);
- __ jump_from_interpreted(method, rdx);
-}
-
-
-void TemplateTable::invokevirtual(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f2_byte, "use this argument");
- prepare_invoke(byte_no,
- rbx, // method or vtable index
- noreg, // unused itable index
- rcx, rdx); // recv, flags
-
- // rbx: index
- // rcx: receiver
- // rdx: flags
-
- invokevirtual_helper(rbx, rcx, rdx);
-}
-
-
-void TemplateTable::invokespecial(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f1_byte, "use this argument");
- prepare_invoke(byte_no, rbx, noreg, // get f1 Method*
- rcx); // get receiver also for null check
- __ verify_oop(rcx);
- __ null_check(rcx);
- // do the call
- __ profile_call(rax);
- __ profile_arguments_type(rax, rbx, rsi, false);
- __ jump_from_interpreted(rbx, rax);
-}
-
-
-void TemplateTable::invokestatic(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f1_byte, "use this argument");
- prepare_invoke(byte_no, rbx); // get f1 Method*
- // do the call
- __ profile_call(rax);
- __ profile_arguments_type(rax, rbx, rsi, false);
- __ jump_from_interpreted(rbx, rax);
-}
-
-
-void TemplateTable::fast_invokevfinal(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f2_byte, "use this argument");
- __ stop("fast_invokevfinal not used on x86");
-}
-
-
-void TemplateTable::invokeinterface(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f1_byte, "use this argument");
- prepare_invoke(byte_no, rax, rbx, // get f1 Klass*, f2 itable index
- rcx, rdx); // recv, flags
-
- // rax: interface klass (from f1)
- // rbx: itable index (from f2)
- // rcx: receiver
- // rdx: flags
-
- // Special case of invokeinterface called for virtual method of
- // java.lang.Object. See cpCacheOop.cpp for details.
- // This code isn't produced by javac, but could be produced by
- // another compliant java compiler.
- Label notMethod;
- __ movl(rdi, rdx);
- __ andl(rdi, (1 << ConstantPoolCacheEntry::is_forced_virtual_shift));
- __ jcc(Assembler::zero, notMethod);
-
- invokevirtual_helper(rbx, rcx, rdx);
- __ bind(notMethod);
-
- // Get receiver klass into rdx - also a null check
- __ restore_locals(); // restore rdi
- __ null_check(rcx, oopDesc::klass_offset_in_bytes());
- __ load_klass(rdx, rcx);
-
- // profile this call
- __ profile_virtual_call(rdx, rsi, rdi);
-
- Label no_such_interface, no_such_method;
-
- __ lookup_interface_method(// inputs: rec. class, interface, itable index
- rdx, rax, rbx,
- // outputs: method, scan temp. reg
- rbx, rsi,
- no_such_interface);
-
- // rbx: Method* to call
- // rcx: receiver
- // Check for abstract method error
- // Note: This should be done more efficiently via a throw_abstract_method_error
- // interpreter entry point and a conditional jump to it in case of a null
- // method.
- __ testptr(rbx, rbx);
- __ jcc(Assembler::zero, no_such_method);
-
- __ profile_arguments_type(rdx, rbx, rsi, true);
-
- // do the call
- // rcx: receiver
- // rbx,: Method*
- __ jump_from_interpreted(rbx, rdx);
- __ should_not_reach_here();
-
- // exception handling code follows...
- // note: must restore interpreter registers to canonical
- // state for exception handling to work correctly!
-
- __ bind(no_such_method);
- // throw exception
- __ pop(rbx); // pop return address (pushed by prepare_invoke)
- __ restore_bcp(); // rsi must be correct for exception handler (was destroyed)
- __ restore_locals(); // make sure locals pointer is correct as well (was destroyed)
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError));
- // the call_VM checks for exception, so we should never return here.
- __ should_not_reach_here();
-
- __ bind(no_such_interface);
- // throw exception
- __ pop(rbx); // pop return address (pushed by prepare_invoke)
- __ restore_bcp(); // rsi must be correct for exception handler (was destroyed)
- __ restore_locals(); // make sure locals pointer is correct as well (was destroyed)
- __ call_VM(noreg, CAST_FROM_FN_PTR(address,
- InterpreterRuntime::throw_IncompatibleClassChangeError));
- // the call_VM checks for exception, so we should never return here.
- __ should_not_reach_here();
-}
-
-void TemplateTable::invokehandle(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f1_byte, "use this argument");
- const Register rbx_method = rbx;
- const Register rax_mtype = rax;
- const Register rcx_recv = rcx;
- const Register rdx_flags = rdx;
-
- prepare_invoke(byte_no, rbx_method, rax_mtype, rcx_recv);
- __ verify_method_ptr(rbx_method);
- __ verify_oop(rcx_recv);
- __ null_check(rcx_recv);
-
- // rax: MethodType object (from cpool->resolved_references[f1], if necessary)
- // rbx: MH.invokeExact_MT method (from f2)
-
- // Note: rax_mtype is already pushed (if necessary) by prepare_invoke
-
- // FIXME: profile the LambdaForm also
- __ profile_final_call(rax);
- __ profile_arguments_type(rdx, rbx_method, rsi, true);
-
- __ jump_from_interpreted(rbx_method, rdx);
-}
-
-
-void TemplateTable::invokedynamic(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f1_byte, "use this argument");
-
- const Register rbx_method = rbx;
- const Register rax_callsite = rax;
-
- prepare_invoke(byte_no, rbx_method, rax_callsite);
-
- // rax: CallSite object (from cpool->resolved_references[f1])
- // rbx: MH.linkToCallSite method (from f2)
-
- // Note: rax_callsite is already pushed by prepare_invoke
-
- // %%% should make a type profile for any invokedynamic that takes a ref argument
- // profile this call
- __ profile_call(rsi);
- __ profile_arguments_type(rdx, rbx, rsi, false);
-
- __ verify_oop(rax_callsite);
-
- __ jump_from_interpreted(rbx_method, rdx);
-}
-
-//----------------------------------------------------------------------------------------------------
-// Allocation
-
-void TemplateTable::_new() {
- transition(vtos, atos);
- __ get_unsigned_2_byte_index_at_bcp(rdx, 1);
- Label slow_case;
- Label slow_case_no_pop;
- Label done;
- Label initialize_header;
- Label initialize_object; // including clearing the fields
- Label allocate_shared;
-
- __ get_cpool_and_tags(rcx, rax);
-
- // Make sure the class we're about to instantiate has been resolved.
- // This is done before loading InstanceKlass to be consistent with the order
- // how Constant Pool is updated (see ConstantPool::klass_at_put)
- const int tags_offset = Array<u1>::base_offset_in_bytes();
- __ cmpb(Address(rax, rdx, Address::times_1, tags_offset), JVM_CONSTANT_Class);
- __ jcc(Assembler::notEqual, slow_case_no_pop);
-
- // get InstanceKlass
- __ movptr(rcx, Address(rcx, rdx, Address::times_ptr, sizeof(ConstantPool)));
- __ push(rcx); // save the contexts of klass for initializing the header
-
- // make sure klass is initialized & doesn't have finalizer
- // make sure klass is fully initialized
- __ cmpb(Address(rcx, InstanceKlass::init_state_offset()), InstanceKlass::fully_initialized);
- __ jcc(Assembler::notEqual, slow_case);
-
- // get instance_size in InstanceKlass (scaled to a count of bytes)
- __ movl(rdx, Address(rcx, Klass::layout_helper_offset()));
- // test to see if it has a finalizer or is malformed in some way
- __ testl(rdx, Klass::_lh_instance_slow_path_bit);
- __ jcc(Assembler::notZero, slow_case);
-
- //
- // Allocate the instance
- // 1) Try to allocate in the TLAB
- // 2) if fail and the object is large allocate in the shared Eden
- // 3) if the above fails (or is not applicable), go to a slow case
- // (creates a new TLAB, etc.)
-
- const bool allow_shared_alloc =
- Universe::heap()->supports_inline_contig_alloc();
-
- const Register thread = rcx;
- if (UseTLAB || allow_shared_alloc) {
- __ get_thread(thread);
- }
-
- if (UseTLAB) {
- __ movptr(rax, Address(thread, in_bytes(JavaThread::tlab_top_offset())));
- __ lea(rbx, Address(rax, rdx, Address::times_1));
- __ cmpptr(rbx, Address(thread, in_bytes(JavaThread::tlab_end_offset())));
- __ jcc(Assembler::above, allow_shared_alloc ? allocate_shared : slow_case);
- __ movptr(Address(thread, in_bytes(JavaThread::tlab_top_offset())), rbx);
- if (ZeroTLAB) {
- // the fields have been already cleared
- __ jmp(initialize_header);
- } else {
- // initialize both the header and fields
- __ jmp(initialize_object);
- }
- }
-
- // Allocation in the shared Eden, if allowed.
- //
- // rdx: instance size in bytes
- if (allow_shared_alloc) {
- __ bind(allocate_shared);
-
- ExternalAddress heap_top((address)Universe::heap()->top_addr());
-
- Label retry;
- __ bind(retry);
- __ movptr(rax, heap_top);
- __ lea(rbx, Address(rax, rdx, Address::times_1));
- __ cmpptr(rbx, ExternalAddress((address)Universe::heap()->end_addr()));
- __ jcc(Assembler::above, slow_case);
-
- // Compare rax, with the top addr, and if still equal, store the new
- // top addr in rbx, at the address of the top addr pointer. Sets ZF if was
- // equal, and clears it otherwise. Use lock prefix for atomicity on MPs.
- //
- // rax,: object begin
- // rbx,: object end
- // rdx: instance size in bytes
- __ locked_cmpxchgptr(rbx, heap_top);
-
- // if someone beat us on the allocation, try again, otherwise continue
- __ jcc(Assembler::notEqual, retry);
-
- __ incr_allocated_bytes(thread, rdx, 0);
- }
-
- if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) {
- // The object is initialized before the header. If the object size is
- // zero, go directly to the header initialization.
- __ bind(initialize_object);
- __ decrement(rdx, sizeof(oopDesc));
- __ jcc(Assembler::zero, initialize_header);
-
- // Initialize topmost object field, divide rdx by 8, check if odd and
- // test if zero.
- __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code)
- __ shrl(rdx, LogBytesPerLong); // divide by 2*oopSize and set carry flag if odd
-
- // rdx must have been multiple of 8
-#ifdef ASSERT
- // make sure rdx was multiple of 8
- Label L;
- // Ignore partial flag stall after shrl() since it is debug VM
- __ jccb(Assembler::carryClear, L);
- __ stop("object size is not multiple of 2 - adjust this code");
- __ bind(L);
- // rdx must be > 0, no extra check needed here
-#endif
-
- // initialize remaining object fields: rdx was a multiple of 8
- { Label loop;
- __ bind(loop);
- __ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 1*oopSize), rcx);
- NOT_LP64(__ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 2*oopSize), rcx));
- __ decrement(rdx);
- __ jcc(Assembler::notZero, loop);
- }
-
- // initialize object header only.
- __ bind(initialize_header);
- if (UseBiasedLocking) {
- __ pop(rcx); // get saved klass back in the register.
- __ movptr(rbx, Address(rcx, Klass::prototype_header_offset()));
- __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()), rbx);
- } else {
- __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()),
- (int32_t)markOopDesc::prototype()); // header
- __ pop(rcx); // get saved klass back in the register.
- }
- __ store_klass(rax, rcx); // klass
-
- {
- SkipIfEqual skip_if(_masm, &DTraceAllocProbes, 0);
- // Trigger dtrace event for fastpath
- __ push(atos);
- __ call_VM_leaf(
- CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), rax);
- __ pop(atos);
- }
-
- __ jmp(done);
- }
-
- // slow case
- __ bind(slow_case);
- __ pop(rcx); // restore stack pointer to what it was when we came in.
- __ bind(slow_case_no_pop);
- __ get_constant_pool(rax);
- __ get_unsigned_2_byte_index_at_bcp(rdx, 1);
- call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), rax, rdx);
-
- // continue
- __ bind(done);
-}
-
-
-void TemplateTable::newarray() {
- transition(itos, atos);
- __ push_i(rax); // make sure everything is on the stack
- __ load_unsigned_byte(rdx, at_bcp(1));
- call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray), rdx, rax);
- __ pop_i(rdx); // discard size
-}
-
-
-void TemplateTable::anewarray() {
- transition(itos, atos);
- __ get_unsigned_2_byte_index_at_bcp(rdx, 1);
- __ get_constant_pool(rcx);
- call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray), rcx, rdx, rax);
-}
-
-
-void TemplateTable::arraylength() {
- transition(atos, itos);
- __ null_check(rax, arrayOopDesc::length_offset_in_bytes());
- __ movl(rax, Address(rax, arrayOopDesc::length_offset_in_bytes()));
-}
-
-
-void TemplateTable::checkcast() {
- transition(atos, atos);
- Label done, is_null, ok_is_subtype, quicked, resolved;
- __ testptr(rax, rax); // Object is in EAX
- __ jcc(Assembler::zero, is_null);
-
- // Get cpool & tags index
- __ get_cpool_and_tags(rcx, rdx); // ECX=cpool, EDX=tags array
- __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // EBX=index
- // See if bytecode has already been quicked
- __ cmpb(Address(rdx, rbx, Address::times_1, Array<u1>::base_offset_in_bytes()), JVM_CONSTANT_Class);
- __ jcc(Assembler::equal, quicked);
-
- __ push(atos);
- call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) );
- // vm_result_2 has metadata result
- // borrow rdi from locals
- __ get_thread(rdi);
- __ get_vm_result_2(rax, rdi);
- __ restore_locals();
- __ pop_ptr(rdx);
- __ jmpb(resolved);
-
- // Get superklass in EAX and subklass in EBX
- __ bind(quicked);
- __ mov(rdx, rax); // Save object in EDX; EAX needed for subtype check
- __ movptr(rax, Address(rcx, rbx, Address::times_ptr, sizeof(ConstantPool)));
-
- __ bind(resolved);
- __ load_klass(rbx, rdx);
-
- // Generate subtype check. Blows ECX. Resets EDI. Object in EDX.
- // Superklass in EAX. Subklass in EBX.
- __ gen_subtype_check( rbx, ok_is_subtype );
-
- // Come here on failure
- __ push(rdx);
- // object is at TOS
- __ jump(ExternalAddress(Interpreter::_throw_ClassCastException_entry));
-
- // Come here on success
- __ bind(ok_is_subtype);
- __ mov(rax,rdx); // Restore object in EDX
-
- // Collect counts on whether this check-cast sees NULLs a lot or not.
- if (ProfileInterpreter) {
- __ jmp(done);
- __ bind(is_null);
- __ profile_null_seen(rcx);
- } else {
- __ bind(is_null); // same as 'done'
- }
- __ bind(done);
-}
-
-
-void TemplateTable::instanceof() {
- transition(atos, itos);
- Label done, is_null, ok_is_subtype, quicked, resolved;
- __ testptr(rax, rax);
- __ jcc(Assembler::zero, is_null);
-
- // Get cpool & tags index
- __ get_cpool_and_tags(rcx, rdx); // ECX=cpool, EDX=tags array
- __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // EBX=index
- // See if bytecode has already been quicked
- __ cmpb(Address(rdx, rbx, Address::times_1, Array<u1>::base_offset_in_bytes()), JVM_CONSTANT_Class);
- __ jcc(Assembler::equal, quicked);
-
- __ push(atos);
- call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) );
- // vm_result_2 has metadata result
- // borrow rdi from locals
- __ get_thread(rdi);
- __ get_vm_result_2(rax, rdi);
- __ restore_locals();
- __ pop_ptr(rdx);
- __ load_klass(rdx, rdx);
- __ jmp(resolved);
-
- // Get superklass in EAX and subklass in EDX
- __ bind(quicked);
- __ load_klass(rdx, rax);
- __ movptr(rax, Address(rcx, rbx, Address::times_ptr, sizeof(ConstantPool)));
-
- __ bind(resolved);
-
- // Generate subtype check. Blows ECX. Resets EDI.
- // Superklass in EAX. Subklass in EDX.
- __ gen_subtype_check( rdx, ok_is_subtype );
-
- // Come here on failure
- __ xorl(rax,rax);
- __ jmpb(done);
- // Come here on success
- __ bind(ok_is_subtype);
- __ movl(rax, 1);
-
- // Collect counts on whether this test sees NULLs a lot or not.
- if (ProfileInterpreter) {
- __ jmp(done);
- __ bind(is_null);
- __ profile_null_seen(rcx);
- } else {
- __ bind(is_null); // same as 'done'
- }
- __ bind(done);
- // rax, = 0: obj == NULL or obj is not an instanceof the specified klass
- // rax, = 1: obj != NULL and obj is an instanceof the specified klass
-}
-
-
-//----------------------------------------------------------------------------------------------------
-// Breakpoints
-void TemplateTable::_breakpoint() {
-
- // Note: We get here even if we are single stepping..
- // jbug inists on setting breakpoints at every bytecode
- // even if we are in single step mode.
-
- transition(vtos, vtos);
-
- // get the unpatched byte code
- __ get_method(rcx);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::get_original_bytecode_at), rcx, rsi);
- __ mov(rbx, rax);
-
- // post the breakpoint event
- __ get_method(rcx);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint), rcx, rsi);
-
- // complete the execution of original bytecode
- __ dispatch_only_normal(vtos);
-}
-
-
-//----------------------------------------------------------------------------------------------------
-// Exceptions
-
-void TemplateTable::athrow() {
- transition(atos, vtos);
- __ null_check(rax);
- __ jump(ExternalAddress(Interpreter::throw_exception_entry()));
-}
-
-
-//----------------------------------------------------------------------------------------------------
-// Synchronization
-//
-// Note: monitorenter & exit are symmetric routines; which is reflected
-// in the assembly code structure as well
-//
-// Stack layout:
-//
-// [expressions ] <--- rsp = expression stack top
-// ..
-// [expressions ]
-// [monitor entry] <--- monitor block top = expression stack bot
-// ..
-// [monitor entry]
-// [frame data ] <--- monitor block bot
-// ...
-// [saved rbp, ] <--- rbp,
-
-
-void TemplateTable::monitorenter() {
- transition(atos, vtos);
-
- // check for NULL object
- __ null_check(rax);
-
- const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
- const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize);
- const int entry_size = ( frame::interpreter_frame_monitor_size() * wordSize);
- Label allocated;
-
- // initialize entry pointer
- __ xorl(rdx, rdx); // points to free slot or NULL
-
- // find a free slot in the monitor block (result in rdx)
- { Label entry, loop, exit;
- __ movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry
-
- __ lea(rbx, monitor_block_bot); // points to word before bottom of monitor block
- __ jmpb(entry);
-
- __ bind(loop);
- __ cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used
- __ cmovptr(Assembler::equal, rdx, rcx); // if not used then remember entry in rdx
- __ cmpptr(rax, Address(rcx, BasicObjectLock::obj_offset_in_bytes())); // check if current entry is for same object
- __ jccb(Assembler::equal, exit); // if same object then stop searching
- __ addptr(rcx, entry_size); // otherwise advance to next entry
- __ bind(entry);
- __ cmpptr(rcx, rbx); // check if bottom reached
- __ jcc(Assembler::notEqual, loop); // if not at bottom then check this entry
- __ bind(exit);
- }
-
- __ testptr(rdx, rdx); // check if a slot has been found
- __ jccb(Assembler::notZero, allocated); // if found, continue with that one
-
- // allocate one if there's no free slot
- { Label entry, loop;
- // 1. compute new pointers // rsp: old expression stack top
- __ movptr(rdx, monitor_block_bot); // rdx: old expression stack bottom
- __ subptr(rsp, entry_size); // move expression stack top
- __ subptr(rdx, entry_size); // move expression stack bottom
- __ mov(rcx, rsp); // set start value for copy loop
- __ movptr(monitor_block_bot, rdx); // set new monitor block top
- __ jmp(entry);
- // 2. move expression stack contents
- __ bind(loop);
- __ movptr(rbx, Address(rcx, entry_size)); // load expression stack word from old location
- __ movptr(Address(rcx, 0), rbx); // and store it at new location
- __ addptr(rcx, wordSize); // advance to next word
- __ bind(entry);
- __ cmpptr(rcx, rdx); // check if bottom reached
- __ jcc(Assembler::notEqual, loop); // if not at bottom then copy next word
- }
-
- // call run-time routine
- // rdx: points to monitor entry
- __ bind(allocated);
-
- // Increment bcp to point to the next bytecode, so exception handling for async. exceptions work correctly.
- // The object has already been poped from the stack, so the expression stack looks correct.
- __ increment(rsi);
-
- __ movptr(Address(rdx, BasicObjectLock::obj_offset_in_bytes()), rax); // store object
- __ lock_object(rdx);
-
- // check to make sure this monitor doesn't cause stack overflow after locking
- __ save_bcp(); // in case of exception
- __ generate_stack_overflow_check(0);
-
- // The bcp has already been incremented. Just need to dispatch to next instruction.
- __ dispatch_next(vtos);
-}
-
-
-void TemplateTable::monitorexit() {
- transition(atos, vtos);
-
- // check for NULL object
- __ null_check(rax);
-
- const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
- const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize);
- const int entry_size = ( frame::interpreter_frame_monitor_size() * wordSize);
- Label found;
-
- // find matching slot
- { Label entry, loop;
- __ movptr(rdx, monitor_block_top); // points to current entry, starting with top-most entry
- __ lea(rbx, monitor_block_bot); // points to word before bottom of monitor block
- __ jmpb(entry);
-
- __ bind(loop);
- __ cmpptr(rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); // check if current entry is for same object
- __ jcc(Assembler::equal, found); // if same object then stop searching
- __ addptr(rdx, entry_size); // otherwise advance to next entry
- __ bind(entry);
- __ cmpptr(rdx, rbx); // check if bottom reached
- __ jcc(Assembler::notEqual, loop); // if not at bottom then check this entry
- }
-
- // error handling. Unlocking was not block-structured
- Label end;
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception));
- __ should_not_reach_here();
-
- // call run-time routine
- // rcx: points to monitor entry
- __ bind(found);
- __ push_ptr(rax); // make sure object is on stack (contract with oopMaps)
- __ unlock_object(rdx);
- __ pop_ptr(rax); // discard object
- __ bind(end);
-}
-
-
-//----------------------------------------------------------------------------------------------------
-// Wide instructions
-
-void TemplateTable::wide() {
- transition(vtos, vtos);
- __ load_unsigned_byte(rbx, at_bcp(1));
- ExternalAddress wtable((address)Interpreter::_wentry_point);
- __ jump(ArrayAddress(wtable, Address(noreg, rbx, Address::times_ptr)));
- // Note: the rsi increment step is part of the individual wide bytecode implementations
-}
-
-
-//----------------------------------------------------------------------------------------------------
-// Multi arrays
-
-void TemplateTable::multianewarray() {
- transition(vtos, atos);
- __ load_unsigned_byte(rax, at_bcp(3)); // get number of dimensions
- // last dim is on top of stack; we want address of first one:
- // first_addr = last_addr + (ndims - 1) * stackElementSize - 1*wordsize
- // the latter wordSize to point to the beginning of the array.
- __ lea( rax, Address(rsp, rax, Interpreter::stackElementScale(), -wordSize));
- call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), rax); // pass in rax,
- __ load_unsigned_byte(rbx, at_bcp(3));
- __ lea(rsp, Address(rsp, rbx, Interpreter::stackElementScale())); // get rid of counts
-}
-
-#endif /* !CC_INTERP */