1761 lines
66 KiB
C++
1761 lines
66 KiB
C++
/*
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* Copyright 1999-2009 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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#include "incls/_precompiled.incl"
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#include "incls/_c1_Runtime1_x86.cpp.incl"
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// Implementation of StubAssembler
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int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry, int args_size) {
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// setup registers
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const Register thread = NOT_LP64(rdi) LP64_ONLY(r15_thread); // is callee-saved register (Visual C++ calling conventions)
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assert(!(oop_result1->is_valid() || oop_result2->is_valid()) || oop_result1 != oop_result2, "registers must be different");
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assert(oop_result1 != thread && oop_result2 != thread, "registers must be different");
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assert(args_size >= 0, "illegal args_size");
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#ifdef _LP64
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mov(c_rarg0, thread);
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set_num_rt_args(0); // Nothing on stack
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#else
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set_num_rt_args(1 + args_size);
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// push java thread (becomes first argument of C function)
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get_thread(thread);
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push(thread);
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#endif // _LP64
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set_last_Java_frame(thread, noreg, rbp, NULL);
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// do the call
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call(RuntimeAddress(entry));
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int call_offset = offset();
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// verify callee-saved register
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#ifdef ASSERT
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guarantee(thread != rax, "change this code");
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push(rax);
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{ Label L;
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get_thread(rax);
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cmpptr(thread, rax);
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jcc(Assembler::equal, L);
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int3();
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stop("StubAssembler::call_RT: rdi not callee saved?");
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bind(L);
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}
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pop(rax);
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#endif
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reset_last_Java_frame(thread, true, false);
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// discard thread and arguments
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NOT_LP64(addptr(rsp, num_rt_args()*BytesPerWord));
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// check for pending exceptions
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{ Label L;
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cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD);
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jcc(Assembler::equal, L);
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// exception pending => remove activation and forward to exception handler
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movptr(rax, Address(thread, Thread::pending_exception_offset()));
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// make sure that the vm_results are cleared
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if (oop_result1->is_valid()) {
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movptr(Address(thread, JavaThread::vm_result_offset()), NULL_WORD);
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}
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if (oop_result2->is_valid()) {
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movptr(Address(thread, JavaThread::vm_result_2_offset()), NULL_WORD);
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}
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if (frame_size() == no_frame_size) {
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leave();
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jump(RuntimeAddress(StubRoutines::forward_exception_entry()));
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} else if (_stub_id == Runtime1::forward_exception_id) {
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should_not_reach_here();
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} else {
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jump(RuntimeAddress(Runtime1::entry_for(Runtime1::forward_exception_id)));
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}
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bind(L);
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}
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// get oop results if there are any and reset the values in the thread
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if (oop_result1->is_valid()) {
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movptr(oop_result1, Address(thread, JavaThread::vm_result_offset()));
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movptr(Address(thread, JavaThread::vm_result_offset()), NULL_WORD);
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verify_oop(oop_result1);
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}
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if (oop_result2->is_valid()) {
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movptr(oop_result2, Address(thread, JavaThread::vm_result_2_offset()));
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movptr(Address(thread, JavaThread::vm_result_2_offset()), NULL_WORD);
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verify_oop(oop_result2);
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}
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return call_offset;
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}
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int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry, Register arg1) {
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#ifdef _LP64
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mov(c_rarg1, arg1);
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#else
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push(arg1);
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#endif // _LP64
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return call_RT(oop_result1, oop_result2, entry, 1);
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}
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int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry, Register arg1, Register arg2) {
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#ifdef _LP64
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if (c_rarg1 == arg2) {
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if (c_rarg2 == arg1) {
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xchgq(arg1, arg2);
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} else {
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mov(c_rarg2, arg2);
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mov(c_rarg1, arg1);
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}
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} else {
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mov(c_rarg1, arg1);
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mov(c_rarg2, arg2);
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}
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#else
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push(arg2);
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push(arg1);
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#endif // _LP64
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return call_RT(oop_result1, oop_result2, entry, 2);
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}
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int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry, Register arg1, Register arg2, Register arg3) {
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#ifdef _LP64
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// if there is any conflict use the stack
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if (arg1 == c_rarg2 || arg1 == c_rarg3 ||
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arg2 == c_rarg1 || arg1 == c_rarg3 ||
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arg3 == c_rarg1 || arg1 == c_rarg2) {
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push(arg3);
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push(arg2);
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push(arg1);
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pop(c_rarg1);
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pop(c_rarg2);
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pop(c_rarg3);
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} else {
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mov(c_rarg1, arg1);
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mov(c_rarg2, arg2);
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mov(c_rarg3, arg3);
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}
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#else
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push(arg3);
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push(arg2);
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push(arg1);
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#endif // _LP64
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return call_RT(oop_result1, oop_result2, entry, 3);
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}
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// Implementation of StubFrame
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class StubFrame: public StackObj {
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private:
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StubAssembler* _sasm;
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public:
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StubFrame(StubAssembler* sasm, const char* name, bool must_gc_arguments);
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void load_argument(int offset_in_words, Register reg);
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~StubFrame();
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};
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#define __ _sasm->
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StubFrame::StubFrame(StubAssembler* sasm, const char* name, bool must_gc_arguments) {
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_sasm = sasm;
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__ set_info(name, must_gc_arguments);
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__ enter();
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}
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// load parameters that were stored with LIR_Assembler::store_parameter
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// Note: offsets for store_parameter and load_argument must match
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void StubFrame::load_argument(int offset_in_words, Register reg) {
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// rbp, + 0: link
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// + 1: return address
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// + 2: argument with offset 0
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// + 3: argument with offset 1
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// + 4: ...
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__ movptr(reg, Address(rbp, (offset_in_words + 2) * BytesPerWord));
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}
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StubFrame::~StubFrame() {
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__ leave();
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__ ret(0);
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}
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#undef __
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// Implementation of Runtime1
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#define __ sasm->
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const int float_regs_as_doubles_size_in_slots = pd_nof_fpu_regs_frame_map * 2;
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const int xmm_regs_as_doubles_size_in_slots = FrameMap::nof_xmm_regs * 2;
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// Stack layout for saving/restoring all the registers needed during a runtime
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// call (this includes deoptimization)
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// Note: note that users of this frame may well have arguments to some runtime
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// while these values are on the stack. These positions neglect those arguments
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// but the code in save_live_registers will take the argument count into
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// account.
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//
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#ifdef _LP64
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#define SLOT2(x) x,
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#define SLOT_PER_WORD 2
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#else
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#define SLOT2(x)
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#define SLOT_PER_WORD 1
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#endif // _LP64
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enum reg_save_layout {
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// 64bit needs to keep stack 16 byte aligned. So we add some alignment dummies to make that
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// happen and will assert if the stack size we create is misaligned
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#ifdef _LP64
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align_dummy_0, align_dummy_1,
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#endif // _LP64
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dummy1, SLOT2(dummy1H) // 0, 4
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dummy2, SLOT2(dummy2H) // 8, 12
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// Two temps to be used as needed by users of save/restore callee registers
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temp_2_off, SLOT2(temp_2H_off) // 16, 20
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temp_1_off, SLOT2(temp_1H_off) // 24, 28
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xmm_regs_as_doubles_off, // 32
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float_regs_as_doubles_off = xmm_regs_as_doubles_off + xmm_regs_as_doubles_size_in_slots, // 160
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fpu_state_off = float_regs_as_doubles_off + float_regs_as_doubles_size_in_slots, // 224
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// fpu_state_end_off is exclusive
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fpu_state_end_off = fpu_state_off + (FPUStateSizeInWords / SLOT_PER_WORD), // 352
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marker = fpu_state_end_off, SLOT2(markerH) // 352, 356
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extra_space_offset, // 360
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#ifdef _LP64
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r15_off = extra_space_offset, r15H_off, // 360, 364
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r14_off, r14H_off, // 368, 372
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r13_off, r13H_off, // 376, 380
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r12_off, r12H_off, // 384, 388
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r11_off, r11H_off, // 392, 396
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r10_off, r10H_off, // 400, 404
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r9_off, r9H_off, // 408, 412
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r8_off, r8H_off, // 416, 420
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rdi_off, rdiH_off, // 424, 428
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#else
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rdi_off = extra_space_offset,
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#endif // _LP64
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rsi_off, SLOT2(rsiH_off) // 432, 436
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rbp_off, SLOT2(rbpH_off) // 440, 444
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rsp_off, SLOT2(rspH_off) // 448, 452
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rbx_off, SLOT2(rbxH_off) // 456, 460
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rdx_off, SLOT2(rdxH_off) // 464, 468
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rcx_off, SLOT2(rcxH_off) // 472, 476
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rax_off, SLOT2(raxH_off) // 480, 484
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saved_rbp_off, SLOT2(saved_rbpH_off) // 488, 492
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return_off, SLOT2(returnH_off) // 496, 500
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reg_save_frame_size, // As noted: neglects any parameters to runtime // 504
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#ifdef _WIN64
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c_rarg0_off = rcx_off,
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#else
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c_rarg0_off = rdi_off,
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#endif // WIN64
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// equates
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// illegal instruction handler
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continue_dest_off = temp_1_off,
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// deoptimization equates
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fp0_off = float_regs_as_doubles_off, // slot for java float/double return value
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xmm0_off = xmm_regs_as_doubles_off, // slot for java float/double return value
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deopt_type = temp_2_off, // slot for type of deopt in progress
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ret_type = temp_1_off // slot for return type
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};
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// Save off registers which might be killed by calls into the runtime.
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// Tries to smart of about FP registers. In particular we separate
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// saving and describing the FPU registers for deoptimization since we
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// have to save the FPU registers twice if we describe them and on P4
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// saving FPU registers which don't contain anything appears
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// expensive. The deopt blob is the only thing which needs to
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// describe FPU registers. In all other cases it should be sufficient
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// to simply save their current value.
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static OopMap* generate_oop_map(StubAssembler* sasm, int num_rt_args,
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bool save_fpu_registers = true) {
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// In 64bit all the args are in regs so there are no additional stack slots
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LP64_ONLY(num_rt_args = 0);
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LP64_ONLY(assert((reg_save_frame_size * VMRegImpl::stack_slot_size) % 16 == 0, "must be 16 byte aligned");)
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int frame_size_in_slots = reg_save_frame_size + num_rt_args; // args + thread
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sasm->set_frame_size(frame_size_in_slots / VMRegImpl::slots_per_word );
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// record saved value locations in an OopMap
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// locations are offsets from sp after runtime call; num_rt_args is number of arguments in call, including thread
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OopMap* map = new OopMap(frame_size_in_slots, 0);
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map->set_callee_saved(VMRegImpl::stack2reg(rax_off + num_rt_args), rax->as_VMReg());
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map->set_callee_saved(VMRegImpl::stack2reg(rcx_off + num_rt_args), rcx->as_VMReg());
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map->set_callee_saved(VMRegImpl::stack2reg(rdx_off + num_rt_args), rdx->as_VMReg());
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map->set_callee_saved(VMRegImpl::stack2reg(rbx_off + num_rt_args), rbx->as_VMReg());
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map->set_callee_saved(VMRegImpl::stack2reg(rsi_off + num_rt_args), rsi->as_VMReg());
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map->set_callee_saved(VMRegImpl::stack2reg(rdi_off + num_rt_args), rdi->as_VMReg());
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#ifdef _LP64
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map->set_callee_saved(VMRegImpl::stack2reg(r8_off + num_rt_args), r8->as_VMReg());
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map->set_callee_saved(VMRegImpl::stack2reg(r9_off + num_rt_args), r9->as_VMReg());
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map->set_callee_saved(VMRegImpl::stack2reg(r10_off + num_rt_args), r10->as_VMReg());
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map->set_callee_saved(VMRegImpl::stack2reg(r11_off + num_rt_args), r11->as_VMReg());
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map->set_callee_saved(VMRegImpl::stack2reg(r12_off + num_rt_args), r12->as_VMReg());
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map->set_callee_saved(VMRegImpl::stack2reg(r13_off + num_rt_args), r13->as_VMReg());
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map->set_callee_saved(VMRegImpl::stack2reg(r14_off + num_rt_args), r14->as_VMReg());
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map->set_callee_saved(VMRegImpl::stack2reg(r15_off + num_rt_args), r15->as_VMReg());
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// This is stupid but needed.
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map->set_callee_saved(VMRegImpl::stack2reg(raxH_off + num_rt_args), rax->as_VMReg()->next());
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map->set_callee_saved(VMRegImpl::stack2reg(rcxH_off + num_rt_args), rcx->as_VMReg()->next());
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map->set_callee_saved(VMRegImpl::stack2reg(rdxH_off + num_rt_args), rdx->as_VMReg()->next());
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map->set_callee_saved(VMRegImpl::stack2reg(rbxH_off + num_rt_args), rbx->as_VMReg()->next());
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map->set_callee_saved(VMRegImpl::stack2reg(rsiH_off + num_rt_args), rsi->as_VMReg()->next());
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map->set_callee_saved(VMRegImpl::stack2reg(rdiH_off + num_rt_args), rdi->as_VMReg()->next());
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map->set_callee_saved(VMRegImpl::stack2reg(r8H_off + num_rt_args), r8->as_VMReg()->next());
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map->set_callee_saved(VMRegImpl::stack2reg(r9H_off + num_rt_args), r9->as_VMReg()->next());
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map->set_callee_saved(VMRegImpl::stack2reg(r10H_off + num_rt_args), r10->as_VMReg()->next());
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map->set_callee_saved(VMRegImpl::stack2reg(r11H_off + num_rt_args), r11->as_VMReg()->next());
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map->set_callee_saved(VMRegImpl::stack2reg(r12H_off + num_rt_args), r12->as_VMReg()->next());
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map->set_callee_saved(VMRegImpl::stack2reg(r13H_off + num_rt_args), r13->as_VMReg()->next());
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map->set_callee_saved(VMRegImpl::stack2reg(r14H_off + num_rt_args), r14->as_VMReg()->next());
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map->set_callee_saved(VMRegImpl::stack2reg(r15H_off + num_rt_args), r15->as_VMReg()->next());
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#endif // _LP64
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if (save_fpu_registers) {
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if (UseSSE < 2) {
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int fpu_off = float_regs_as_doubles_off;
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for (int n = 0; n < FrameMap::nof_fpu_regs; n++) {
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VMReg fpu_name_0 = FrameMap::fpu_regname(n);
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map->set_callee_saved(VMRegImpl::stack2reg(fpu_off + num_rt_args), fpu_name_0);
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// %%% This is really a waste but we'll keep things as they were for now
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if (true) {
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map->set_callee_saved(VMRegImpl::stack2reg(fpu_off + 1 + num_rt_args), fpu_name_0->next());
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}
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fpu_off += 2;
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}
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assert(fpu_off == fpu_state_off, "incorrect number of fpu stack slots");
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}
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if (UseSSE >= 2) {
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int xmm_off = xmm_regs_as_doubles_off;
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for (int n = 0; n < FrameMap::nof_xmm_regs; n++) {
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VMReg xmm_name_0 = as_XMMRegister(n)->as_VMReg();
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map->set_callee_saved(VMRegImpl::stack2reg(xmm_off + num_rt_args), xmm_name_0);
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// %%% This is really a waste but we'll keep things as they were for now
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if (true) {
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map->set_callee_saved(VMRegImpl::stack2reg(xmm_off + 1 + num_rt_args), xmm_name_0->next());
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}
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xmm_off += 2;
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}
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assert(xmm_off == float_regs_as_doubles_off, "incorrect number of xmm registers");
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} else if (UseSSE == 1) {
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int xmm_off = xmm_regs_as_doubles_off;
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for (int n = 0; n < FrameMap::nof_xmm_regs; n++) {
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VMReg xmm_name_0 = as_XMMRegister(n)->as_VMReg();
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map->set_callee_saved(VMRegImpl::stack2reg(xmm_off + num_rt_args), xmm_name_0);
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xmm_off += 2;
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}
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assert(xmm_off == float_regs_as_doubles_off, "incorrect number of xmm registers");
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}
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}
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return map;
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}
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static OopMap* save_live_registers(StubAssembler* sasm, int num_rt_args,
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bool save_fpu_registers = true) {
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__ block_comment("save_live_registers");
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// 64bit passes the args in regs to the c++ runtime
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int frame_size_in_slots = reg_save_frame_size NOT_LP64(+ num_rt_args); // args + thread
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// frame_size = round_to(frame_size, 4);
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sasm->set_frame_size(frame_size_in_slots / VMRegImpl::slots_per_word );
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__ pusha(); // integer registers
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// assert(float_regs_as_doubles_off % 2 == 0, "misaligned offset");
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// assert(xmm_regs_as_doubles_off % 2 == 0, "misaligned offset");
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__ subptr(rsp, extra_space_offset * VMRegImpl::stack_slot_size);
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#ifdef ASSERT
|
|
__ movptr(Address(rsp, marker * VMRegImpl::stack_slot_size), (int32_t)0xfeedbeef);
|
|
#endif
|
|
|
|
if (save_fpu_registers) {
|
|
if (UseSSE < 2) {
|
|
// save FPU stack
|
|
__ fnsave(Address(rsp, fpu_state_off * VMRegImpl::stack_slot_size));
|
|
__ fwait();
|
|
|
|
#ifdef ASSERT
|
|
Label ok;
|
|
__ cmpw(Address(rsp, fpu_state_off * VMRegImpl::stack_slot_size), StubRoutines::fpu_cntrl_wrd_std());
|
|
__ jccb(Assembler::equal, ok);
|
|
__ stop("corrupted control word detected");
|
|
__ bind(ok);
|
|
#endif
|
|
|
|
// Reset the control word to guard against exceptions being unmasked
|
|
// since fstp_d can cause FPU stack underflow exceptions. Write it
|
|
// into the on stack copy and then reload that to make sure that the
|
|
// current and future values are correct.
|
|
__ movw(Address(rsp, fpu_state_off * VMRegImpl::stack_slot_size), StubRoutines::fpu_cntrl_wrd_std());
|
|
__ frstor(Address(rsp, fpu_state_off * VMRegImpl::stack_slot_size));
|
|
|
|
// Save the FPU registers in de-opt-able form
|
|
__ fstp_d(Address(rsp, float_regs_as_doubles_off * VMRegImpl::stack_slot_size + 0));
|
|
__ fstp_d(Address(rsp, float_regs_as_doubles_off * VMRegImpl::stack_slot_size + 8));
|
|
__ fstp_d(Address(rsp, float_regs_as_doubles_off * VMRegImpl::stack_slot_size + 16));
|
|
__ fstp_d(Address(rsp, float_regs_as_doubles_off * VMRegImpl::stack_slot_size + 24));
|
|
__ fstp_d(Address(rsp, float_regs_as_doubles_off * VMRegImpl::stack_slot_size + 32));
|
|
__ fstp_d(Address(rsp, float_regs_as_doubles_off * VMRegImpl::stack_slot_size + 40));
|
|
__ fstp_d(Address(rsp, float_regs_as_doubles_off * VMRegImpl::stack_slot_size + 48));
|
|
__ fstp_d(Address(rsp, float_regs_as_doubles_off * VMRegImpl::stack_slot_size + 56));
|
|
}
|
|
|
|
if (UseSSE >= 2) {
|
|
// save XMM registers
|
|
// XMM registers can contain float or double values, but this is not known here,
|
|
// so always save them as doubles.
|
|
// note that float values are _not_ converted automatically, so for float values
|
|
// the second word contains only garbage data.
|
|
__ movdbl(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 0), xmm0);
|
|
__ movdbl(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 8), xmm1);
|
|
__ movdbl(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 16), xmm2);
|
|
__ movdbl(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 24), xmm3);
|
|
__ movdbl(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 32), xmm4);
|
|
__ movdbl(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 40), xmm5);
|
|
__ movdbl(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 48), xmm6);
|
|
__ movdbl(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 56), xmm7);
|
|
#ifdef _LP64
|
|
__ movdbl(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 64), xmm8);
|
|
__ movdbl(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 72), xmm9);
|
|
__ movdbl(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 80), xmm10);
|
|
__ movdbl(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 88), xmm11);
|
|
__ movdbl(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 96), xmm12);
|
|
__ movdbl(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 104), xmm13);
|
|
__ movdbl(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 112), xmm14);
|
|
__ movdbl(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 120), xmm15);
|
|
#endif // _LP64
|
|
} else if (UseSSE == 1) {
|
|
// save XMM registers as float because double not supported without SSE2
|
|
__ movflt(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 0), xmm0);
|
|
__ movflt(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 8), xmm1);
|
|
__ movflt(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 16), xmm2);
|
|
__ movflt(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 24), xmm3);
|
|
__ movflt(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 32), xmm4);
|
|
__ movflt(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 40), xmm5);
|
|
__ movflt(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 48), xmm6);
|
|
__ movflt(Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 56), xmm7);
|
|
}
|
|
}
|
|
|
|
// FPU stack must be empty now
|
|
__ verify_FPU(0, "save_live_registers");
|
|
|
|
return generate_oop_map(sasm, num_rt_args, save_fpu_registers);
|
|
}
|
|
|
|
|
|
static void restore_fpu(StubAssembler* sasm, bool restore_fpu_registers = true) {
|
|
if (restore_fpu_registers) {
|
|
if (UseSSE >= 2) {
|
|
// restore XMM registers
|
|
__ movdbl(xmm0, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 0));
|
|
__ movdbl(xmm1, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 8));
|
|
__ movdbl(xmm2, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 16));
|
|
__ movdbl(xmm3, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 24));
|
|
__ movdbl(xmm4, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 32));
|
|
__ movdbl(xmm5, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 40));
|
|
__ movdbl(xmm6, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 48));
|
|
__ movdbl(xmm7, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 56));
|
|
#ifdef _LP64
|
|
__ movdbl(xmm8, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 64));
|
|
__ movdbl(xmm9, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 72));
|
|
__ movdbl(xmm10, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 80));
|
|
__ movdbl(xmm11, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 88));
|
|
__ movdbl(xmm12, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 96));
|
|
__ movdbl(xmm13, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 104));
|
|
__ movdbl(xmm14, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 112));
|
|
__ movdbl(xmm15, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 120));
|
|
#endif // _LP64
|
|
} else if (UseSSE == 1) {
|
|
// restore XMM registers
|
|
__ movflt(xmm0, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 0));
|
|
__ movflt(xmm1, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 8));
|
|
__ movflt(xmm2, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 16));
|
|
__ movflt(xmm3, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 24));
|
|
__ movflt(xmm4, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 32));
|
|
__ movflt(xmm5, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 40));
|
|
__ movflt(xmm6, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 48));
|
|
__ movflt(xmm7, Address(rsp, xmm_regs_as_doubles_off * VMRegImpl::stack_slot_size + 56));
|
|
}
|
|
|
|
if (UseSSE < 2) {
|
|
__ frstor(Address(rsp, fpu_state_off * VMRegImpl::stack_slot_size));
|
|
} else {
|
|
// check that FPU stack is really empty
|
|
__ verify_FPU(0, "restore_live_registers");
|
|
}
|
|
|
|
} else {
|
|
// check that FPU stack is really empty
|
|
__ verify_FPU(0, "restore_live_registers");
|
|
}
|
|
|
|
#ifdef ASSERT
|
|
{
|
|
Label ok;
|
|
__ cmpptr(Address(rsp, marker * VMRegImpl::stack_slot_size), (int32_t)0xfeedbeef);
|
|
__ jcc(Assembler::equal, ok);
|
|
__ stop("bad offsets in frame");
|
|
__ bind(ok);
|
|
}
|
|
#endif // ASSERT
|
|
|
|
__ addptr(rsp, extra_space_offset * VMRegImpl::stack_slot_size);
|
|
}
|
|
|
|
|
|
static void restore_live_registers(StubAssembler* sasm, bool restore_fpu_registers = true) {
|
|
__ block_comment("restore_live_registers");
|
|
|
|
restore_fpu(sasm, restore_fpu_registers);
|
|
__ popa();
|
|
}
|
|
|
|
|
|
static void restore_live_registers_except_rax(StubAssembler* sasm, bool restore_fpu_registers = true) {
|
|
__ block_comment("restore_live_registers_except_rax");
|
|
|
|
restore_fpu(sasm, restore_fpu_registers);
|
|
|
|
#ifdef _LP64
|
|
__ movptr(r15, Address(rsp, 0));
|
|
__ movptr(r14, Address(rsp, wordSize));
|
|
__ movptr(r13, Address(rsp, 2 * wordSize));
|
|
__ movptr(r12, Address(rsp, 3 * wordSize));
|
|
__ movptr(r11, Address(rsp, 4 * wordSize));
|
|
__ movptr(r10, Address(rsp, 5 * wordSize));
|
|
__ movptr(r9, Address(rsp, 6 * wordSize));
|
|
__ movptr(r8, Address(rsp, 7 * wordSize));
|
|
__ movptr(rdi, Address(rsp, 8 * wordSize));
|
|
__ movptr(rsi, Address(rsp, 9 * wordSize));
|
|
__ movptr(rbp, Address(rsp, 10 * wordSize));
|
|
// skip rsp
|
|
__ movptr(rbx, Address(rsp, 12 * wordSize));
|
|
__ movptr(rdx, Address(rsp, 13 * wordSize));
|
|
__ movptr(rcx, Address(rsp, 14 * wordSize));
|
|
|
|
__ addptr(rsp, 16 * wordSize);
|
|
#else
|
|
|
|
__ pop(rdi);
|
|
__ pop(rsi);
|
|
__ pop(rbp);
|
|
__ pop(rbx); // skip this value
|
|
__ pop(rbx);
|
|
__ pop(rdx);
|
|
__ pop(rcx);
|
|
__ addptr(rsp, BytesPerWord);
|
|
#endif // _LP64
|
|
}
|
|
|
|
|
|
void Runtime1::initialize_pd() {
|
|
// nothing to do
|
|
}
|
|
|
|
|
|
// target: the entry point of the method that creates and posts the exception oop
|
|
// has_argument: true if the exception needs an argument (passed on stack because registers must be preserved)
|
|
|
|
OopMapSet* Runtime1::generate_exception_throw(StubAssembler* sasm, address target, bool has_argument) {
|
|
// preserve all registers
|
|
int num_rt_args = has_argument ? 2 : 1;
|
|
OopMap* oop_map = save_live_registers(sasm, num_rt_args);
|
|
|
|
// now all registers are saved and can be used freely
|
|
// verify that no old value is used accidentally
|
|
__ invalidate_registers(true, true, true, true, true, true);
|
|
|
|
// registers used by this stub
|
|
const Register temp_reg = rbx;
|
|
|
|
// load argument for exception that is passed as an argument into the stub
|
|
if (has_argument) {
|
|
#ifdef _LP64
|
|
__ movptr(c_rarg1, Address(rbp, 2*BytesPerWord));
|
|
#else
|
|
__ movptr(temp_reg, Address(rbp, 2*BytesPerWord));
|
|
__ push(temp_reg);
|
|
#endif // _LP64
|
|
}
|
|
int call_offset = __ call_RT(noreg, noreg, target, num_rt_args - 1);
|
|
|
|
OopMapSet* oop_maps = new OopMapSet();
|
|
oop_maps->add_gc_map(call_offset, oop_map);
|
|
|
|
__ stop("should not reach here");
|
|
|
|
return oop_maps;
|
|
}
|
|
|
|
|
|
void Runtime1::generate_handle_exception(StubAssembler *sasm, OopMapSet* oop_maps, OopMap* oop_map, bool save_fpu_registers) {
|
|
// incoming parameters
|
|
const Register exception_oop = rax;
|
|
const Register exception_pc = rdx;
|
|
// other registers used in this stub
|
|
const Register real_return_addr = rbx;
|
|
const Register thread = NOT_LP64(rdi) LP64_ONLY(r15_thread);
|
|
|
|
__ block_comment("generate_handle_exception");
|
|
|
|
#ifdef TIERED
|
|
// C2 can leave the fpu stack dirty
|
|
if (UseSSE < 2 ) {
|
|
__ empty_FPU_stack();
|
|
}
|
|
#endif // TIERED
|
|
|
|
// verify that only rax, and rdx is valid at this time
|
|
__ invalidate_registers(false, true, true, false, true, true);
|
|
// verify that rax, contains a valid exception
|
|
__ verify_not_null_oop(exception_oop);
|
|
|
|
// load address of JavaThread object for thread-local data
|
|
NOT_LP64(__ get_thread(thread);)
|
|
|
|
#ifdef ASSERT
|
|
// check that fields in JavaThread for exception oop and issuing pc are
|
|
// empty before writing to them
|
|
Label oop_empty;
|
|
__ cmpptr(Address(thread, JavaThread::exception_oop_offset()), (int32_t) NULL_WORD);
|
|
__ jcc(Assembler::equal, oop_empty);
|
|
__ stop("exception oop already set");
|
|
__ bind(oop_empty);
|
|
|
|
Label pc_empty;
|
|
__ cmpptr(Address(thread, JavaThread::exception_pc_offset()), 0);
|
|
__ jcc(Assembler::equal, pc_empty);
|
|
__ stop("exception pc already set");
|
|
__ bind(pc_empty);
|
|
#endif
|
|
|
|
// save exception oop and issuing pc into JavaThread
|
|
// (exception handler will load it from here)
|
|
__ movptr(Address(thread, JavaThread::exception_oop_offset()), exception_oop);
|
|
__ movptr(Address(thread, JavaThread::exception_pc_offset()), exception_pc);
|
|
|
|
// save real return address (pc that called this stub)
|
|
__ movptr(real_return_addr, Address(rbp, 1*BytesPerWord));
|
|
__ movptr(Address(rsp, temp_1_off * VMRegImpl::stack_slot_size), real_return_addr);
|
|
|
|
// patch throwing pc into return address (has bci & oop map)
|
|
__ movptr(Address(rbp, 1*BytesPerWord), exception_pc);
|
|
|
|
// compute the exception handler.
|
|
// the exception oop and the throwing pc are read from the fields in JavaThread
|
|
int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, exception_handler_for_pc));
|
|
oop_maps->add_gc_map(call_offset, oop_map);
|
|
|
|
// rax,: handler address or NULL if no handler exists
|
|
// will be the deopt blob if nmethod was deoptimized while we looked up
|
|
// handler regardless of whether handler existed in the nmethod.
|
|
|
|
// only rax, is valid at this time, all other registers have been destroyed by the runtime call
|
|
__ invalidate_registers(false, true, true, true, true, true);
|
|
|
|
// Do we have an exception handler in the nmethod?
|
|
Label no_handler;
|
|
Label done;
|
|
__ testptr(rax, rax);
|
|
__ jcc(Assembler::zero, no_handler);
|
|
|
|
// exception handler found
|
|
// patch the return address -> the stub will directly return to the exception handler
|
|
__ movptr(Address(rbp, 1*BytesPerWord), rax);
|
|
|
|
// restore registers
|
|
restore_live_registers(sasm, save_fpu_registers);
|
|
|
|
// return to exception handler
|
|
__ leave();
|
|
__ ret(0);
|
|
|
|
__ bind(no_handler);
|
|
// no exception handler found in this method, so the exception is
|
|
// forwarded to the caller (using the unwind code of the nmethod)
|
|
// there is no need to restore the registers
|
|
|
|
// restore the real return address that was saved before the RT-call
|
|
__ movptr(real_return_addr, Address(rsp, temp_1_off * VMRegImpl::stack_slot_size));
|
|
__ movptr(Address(rbp, 1*BytesPerWord), real_return_addr);
|
|
|
|
// load address of JavaThread object for thread-local data
|
|
NOT_LP64(__ get_thread(thread);)
|
|
// restore exception oop into rax, (convention for unwind code)
|
|
__ movptr(exception_oop, Address(thread, JavaThread::exception_oop_offset()));
|
|
|
|
// clear exception fields in JavaThread because they are no longer needed
|
|
// (fields must be cleared because they are processed by GC otherwise)
|
|
__ movptr(Address(thread, JavaThread::exception_oop_offset()), NULL_WORD);
|
|
__ movptr(Address(thread, JavaThread::exception_pc_offset()), NULL_WORD);
|
|
|
|
// pop the stub frame off
|
|
__ leave();
|
|
|
|
generate_unwind_exception(sasm);
|
|
__ stop("should not reach here");
|
|
}
|
|
|
|
|
|
void Runtime1::generate_unwind_exception(StubAssembler *sasm) {
|
|
// incoming parameters
|
|
const Register exception_oop = rax;
|
|
// other registers used in this stub
|
|
const Register exception_pc = rdx;
|
|
const Register handler_addr = rbx;
|
|
const Register thread = NOT_LP64(rdi) LP64_ONLY(r15_thread);
|
|
|
|
// verify that only rax, is valid at this time
|
|
__ invalidate_registers(false, true, true, true, true, true);
|
|
|
|
#ifdef ASSERT
|
|
// check that fields in JavaThread for exception oop and issuing pc are empty
|
|
NOT_LP64(__ get_thread(thread);)
|
|
Label oop_empty;
|
|
__ cmpptr(Address(thread, JavaThread::exception_oop_offset()), 0);
|
|
__ jcc(Assembler::equal, oop_empty);
|
|
__ stop("exception oop must be empty");
|
|
__ bind(oop_empty);
|
|
|
|
Label pc_empty;
|
|
__ cmpptr(Address(thread, JavaThread::exception_pc_offset()), 0);
|
|
__ jcc(Assembler::equal, pc_empty);
|
|
__ stop("exception pc must be empty");
|
|
__ bind(pc_empty);
|
|
#endif
|
|
|
|
// clear the FPU stack in case any FPU results are left behind
|
|
__ empty_FPU_stack();
|
|
|
|
// leave activation of nmethod
|
|
__ leave();
|
|
// store return address (is on top of stack after leave)
|
|
__ movptr(exception_pc, Address(rsp, 0));
|
|
|
|
__ verify_oop(exception_oop);
|
|
|
|
// save exception oop from rax, to stack before call
|
|
__ push(exception_oop);
|
|
|
|
// search the exception handler address of the caller (using the return address)
|
|
__ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), exception_pc);
|
|
// rax,: exception handler address of the caller
|
|
|
|
// only rax, is valid at this time, all other registers have been destroyed by the call
|
|
__ invalidate_registers(false, true, true, true, true, true);
|
|
|
|
// move result of call into correct register
|
|
__ movptr(handler_addr, rax);
|
|
|
|
// restore exception oop in rax, (required convention of exception handler)
|
|
__ pop(exception_oop);
|
|
|
|
__ verify_oop(exception_oop);
|
|
|
|
// get throwing pc (= return address).
|
|
// rdx has been destroyed by the call, so it must be set again
|
|
// the pop is also necessary to simulate the effect of a ret(0)
|
|
__ pop(exception_pc);
|
|
|
|
// verify that that there is really a valid exception in rax,
|
|
__ verify_not_null_oop(exception_oop);
|
|
|
|
// continue at exception handler (return address removed)
|
|
// note: do *not* remove arguments when unwinding the
|
|
// activation since the caller assumes having
|
|
// all arguments on the stack when entering the
|
|
// runtime to determine the exception handler
|
|
// (GC happens at call site with arguments!)
|
|
// rax,: exception oop
|
|
// rdx: throwing pc
|
|
// rbx,: exception handler
|
|
__ jmp(handler_addr);
|
|
}
|
|
|
|
|
|
OopMapSet* Runtime1::generate_patching(StubAssembler* sasm, address target) {
|
|
// use the maximum number of runtime-arguments here because it is difficult to
|
|
// distinguish each RT-Call.
|
|
// Note: This number affects also the RT-Call in generate_handle_exception because
|
|
// the oop-map is shared for all calls.
|
|
const int num_rt_args = 2; // thread + dummy
|
|
|
|
DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob();
|
|
assert(deopt_blob != NULL, "deoptimization blob must have been created");
|
|
|
|
OopMap* oop_map = save_live_registers(sasm, num_rt_args);
|
|
|
|
#ifdef _LP64
|
|
const Register thread = r15_thread;
|
|
// No need to worry about dummy
|
|
__ mov(c_rarg0, thread);
|
|
#else
|
|
__ push(rax); // push dummy
|
|
|
|
const Register thread = rdi; // is callee-saved register (Visual C++ calling conventions)
|
|
// push java thread (becomes first argument of C function)
|
|
__ get_thread(thread);
|
|
__ push(thread);
|
|
#endif // _LP64
|
|
__ set_last_Java_frame(thread, noreg, rbp, NULL);
|
|
// do the call
|
|
__ call(RuntimeAddress(target));
|
|
OopMapSet* oop_maps = new OopMapSet();
|
|
oop_maps->add_gc_map(__ offset(), oop_map);
|
|
// verify callee-saved register
|
|
#ifdef ASSERT
|
|
guarantee(thread != rax, "change this code");
|
|
__ push(rax);
|
|
{ Label L;
|
|
__ get_thread(rax);
|
|
__ cmpptr(thread, rax);
|
|
__ jcc(Assembler::equal, L);
|
|
__ stop("StubAssembler::call_RT: rdi/r15 not callee saved?");
|
|
__ bind(L);
|
|
}
|
|
__ pop(rax);
|
|
#endif
|
|
__ reset_last_Java_frame(thread, true, false);
|
|
#ifndef _LP64
|
|
__ pop(rcx); // discard thread arg
|
|
__ pop(rcx); // discard dummy
|
|
#endif // _LP64
|
|
|
|
// check for pending exceptions
|
|
{ Label L;
|
|
__ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD);
|
|
__ jcc(Assembler::equal, L);
|
|
// exception pending => remove activation and forward to exception handler
|
|
|
|
__ testptr(rax, rax); // have we deoptimized?
|
|
__ jump_cc(Assembler::equal,
|
|
RuntimeAddress(Runtime1::entry_for(Runtime1::forward_exception_id)));
|
|
|
|
// the deopt blob expects exceptions in the special fields of
|
|
// JavaThread, so copy and clear pending exception.
|
|
|
|
// load and clear pending exception
|
|
__ movptr(rax, Address(thread, Thread::pending_exception_offset()));
|
|
__ movptr(Address(thread, Thread::pending_exception_offset()), NULL_WORD);
|
|
|
|
// check that there is really a valid exception
|
|
__ verify_not_null_oop(rax);
|
|
|
|
// load throwing pc: this is the return address of the stub
|
|
__ movptr(rdx, Address(rsp, return_off * VMRegImpl::stack_slot_size));
|
|
|
|
#ifdef ASSERT
|
|
// check that fields in JavaThread for exception oop and issuing pc are empty
|
|
Label oop_empty;
|
|
__ cmpptr(Address(thread, JavaThread::exception_oop_offset()), (int32_t)NULL_WORD);
|
|
__ jcc(Assembler::equal, oop_empty);
|
|
__ stop("exception oop must be empty");
|
|
__ bind(oop_empty);
|
|
|
|
Label pc_empty;
|
|
__ cmpptr(Address(thread, JavaThread::exception_pc_offset()), (int32_t)NULL_WORD);
|
|
__ jcc(Assembler::equal, pc_empty);
|
|
__ stop("exception pc must be empty");
|
|
__ bind(pc_empty);
|
|
#endif
|
|
|
|
// store exception oop and throwing pc to JavaThread
|
|
__ movptr(Address(thread, JavaThread::exception_oop_offset()), rax);
|
|
__ movptr(Address(thread, JavaThread::exception_pc_offset()), rdx);
|
|
|
|
restore_live_registers(sasm);
|
|
|
|
__ leave();
|
|
__ addptr(rsp, BytesPerWord); // remove return address from stack
|
|
|
|
// Forward the exception directly to deopt blob. We can blow no
|
|
// registers and must leave throwing pc on the stack. A patch may
|
|
// have values live in registers so the entry point with the
|
|
// exception in tls.
|
|
__ jump(RuntimeAddress(deopt_blob->unpack_with_exception_in_tls()));
|
|
|
|
__ bind(L);
|
|
}
|
|
|
|
|
|
// Runtime will return true if the nmethod has been deoptimized during
|
|
// the patching process. In that case we must do a deopt reexecute instead.
|
|
|
|
Label reexecuteEntry, cont;
|
|
|
|
__ testptr(rax, rax); // have we deoptimized?
|
|
__ jcc(Assembler::equal, cont); // no
|
|
|
|
// Will reexecute. Proper return address is already on the stack we just restore
|
|
// registers, pop all of our frame but the return address and jump to the deopt blob
|
|
restore_live_registers(sasm);
|
|
__ leave();
|
|
__ jump(RuntimeAddress(deopt_blob->unpack_with_reexecution()));
|
|
|
|
__ bind(cont);
|
|
restore_live_registers(sasm);
|
|
__ leave();
|
|
__ ret(0);
|
|
|
|
return oop_maps;
|
|
|
|
}
|
|
|
|
|
|
OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) {
|
|
|
|
// for better readability
|
|
const bool must_gc_arguments = true;
|
|
const bool dont_gc_arguments = false;
|
|
|
|
// default value; overwritten for some optimized stubs that are called from methods that do not use the fpu
|
|
bool save_fpu_registers = true;
|
|
|
|
// stub code & info for the different stubs
|
|
OopMapSet* oop_maps = NULL;
|
|
switch (id) {
|
|
case forward_exception_id:
|
|
{
|
|
// we're handling an exception in the context of a compiled
|
|
// frame. The registers have been saved in the standard
|
|
// places. Perform an exception lookup in the caller and
|
|
// dispatch to the handler if found. Otherwise unwind and
|
|
// dispatch to the callers exception handler.
|
|
|
|
const Register thread = NOT_LP64(rdi) LP64_ONLY(r15_thread);
|
|
const Register exception_oop = rax;
|
|
const Register exception_pc = rdx;
|
|
|
|
// load pending exception oop into rax,
|
|
__ movptr(exception_oop, Address(thread, Thread::pending_exception_offset()));
|
|
// clear pending exception
|
|
__ movptr(Address(thread, Thread::pending_exception_offset()), NULL_WORD);
|
|
|
|
// load issuing PC (the return address for this stub) into rdx
|
|
__ movptr(exception_pc, Address(rbp, 1*BytesPerWord));
|
|
|
|
// make sure that the vm_results are cleared (may be unnecessary)
|
|
__ movptr(Address(thread, JavaThread::vm_result_offset()), NULL_WORD);
|
|
__ movptr(Address(thread, JavaThread::vm_result_2_offset()), NULL_WORD);
|
|
|
|
// verify that that there is really a valid exception in rax,
|
|
__ verify_not_null_oop(exception_oop);
|
|
|
|
|
|
oop_maps = new OopMapSet();
|
|
OopMap* oop_map = generate_oop_map(sasm, 1);
|
|
generate_handle_exception(sasm, oop_maps, oop_map);
|
|
__ stop("should not reach here");
|
|
}
|
|
break;
|
|
|
|
case new_instance_id:
|
|
case fast_new_instance_id:
|
|
case fast_new_instance_init_check_id:
|
|
{
|
|
Register klass = rdx; // Incoming
|
|
Register obj = rax; // Result
|
|
|
|
if (id == new_instance_id) {
|
|
__ set_info("new_instance", dont_gc_arguments);
|
|
} else if (id == fast_new_instance_id) {
|
|
__ set_info("fast new_instance", dont_gc_arguments);
|
|
} else {
|
|
assert(id == fast_new_instance_init_check_id, "bad StubID");
|
|
__ set_info("fast new_instance init check", dont_gc_arguments);
|
|
}
|
|
|
|
if ((id == fast_new_instance_id || id == fast_new_instance_init_check_id) &&
|
|
UseTLAB && FastTLABRefill) {
|
|
Label slow_path;
|
|
Register obj_size = rcx;
|
|
Register t1 = rbx;
|
|
Register t2 = rsi;
|
|
assert_different_registers(klass, obj, obj_size, t1, t2);
|
|
|
|
__ push(rdi);
|
|
__ push(rbx);
|
|
|
|
if (id == fast_new_instance_init_check_id) {
|
|
// make sure the klass is initialized
|
|
__ cmpl(Address(klass, instanceKlass::init_state_offset_in_bytes() + sizeof(oopDesc)), instanceKlass::fully_initialized);
|
|
__ jcc(Assembler::notEqual, slow_path);
|
|
}
|
|
|
|
#ifdef ASSERT
|
|
// assert object can be fast path allocated
|
|
{
|
|
Label ok, not_ok;
|
|
__ movl(obj_size, Address(klass, Klass::layout_helper_offset_in_bytes() + sizeof(oopDesc)));
|
|
__ cmpl(obj_size, 0); // make sure it's an instance (LH > 0)
|
|
__ jcc(Assembler::lessEqual, not_ok);
|
|
__ testl(obj_size, Klass::_lh_instance_slow_path_bit);
|
|
__ jcc(Assembler::zero, ok);
|
|
__ bind(not_ok);
|
|
__ stop("assert(can be fast path allocated)");
|
|
__ should_not_reach_here();
|
|
__ bind(ok);
|
|
}
|
|
#endif // ASSERT
|
|
|
|
// if we got here then the TLAB allocation failed, so try
|
|
// refilling the TLAB or allocating directly from eden.
|
|
Label retry_tlab, try_eden;
|
|
__ tlab_refill(retry_tlab, try_eden, slow_path); // does not destroy rdx (klass)
|
|
|
|
__ bind(retry_tlab);
|
|
|
|
// get the instance size (size is postive so movl is fine for 64bit)
|
|
__ movl(obj_size, Address(klass, klassOopDesc::header_size() * HeapWordSize + Klass::layout_helper_offset_in_bytes()));
|
|
__ tlab_allocate(obj, obj_size, 0, t1, t2, slow_path);
|
|
__ initialize_object(obj, klass, obj_size, 0, t1, t2);
|
|
__ verify_oop(obj);
|
|
__ pop(rbx);
|
|
__ pop(rdi);
|
|
__ ret(0);
|
|
|
|
__ bind(try_eden);
|
|
// get the instance size (size is postive so movl is fine for 64bit)
|
|
__ movl(obj_size, Address(klass, klassOopDesc::header_size() * HeapWordSize + Klass::layout_helper_offset_in_bytes()));
|
|
__ eden_allocate(obj, obj_size, 0, t1, slow_path);
|
|
__ initialize_object(obj, klass, obj_size, 0, t1, t2);
|
|
__ verify_oop(obj);
|
|
__ pop(rbx);
|
|
__ pop(rdi);
|
|
__ ret(0);
|
|
|
|
__ bind(slow_path);
|
|
__ pop(rbx);
|
|
__ pop(rdi);
|
|
}
|
|
|
|
__ enter();
|
|
OopMap* map = save_live_registers(sasm, 2);
|
|
int call_offset = __ call_RT(obj, noreg, CAST_FROM_FN_PTR(address, new_instance), klass);
|
|
oop_maps = new OopMapSet();
|
|
oop_maps->add_gc_map(call_offset, map);
|
|
restore_live_registers_except_rax(sasm);
|
|
__ verify_oop(obj);
|
|
__ leave();
|
|
__ ret(0);
|
|
|
|
// rax,: new instance
|
|
}
|
|
|
|
break;
|
|
|
|
#ifdef TIERED
|
|
case counter_overflow_id:
|
|
{
|
|
Register bci = rax;
|
|
__ enter();
|
|
OopMap* map = save_live_registers(sasm, 2);
|
|
// Retrieve bci
|
|
__ movl(bci, Address(rbp, 2*BytesPerWord));
|
|
int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, counter_overflow), bci);
|
|
oop_maps = new OopMapSet();
|
|
oop_maps->add_gc_map(call_offset, map);
|
|
restore_live_registers(sasm);
|
|
__ leave();
|
|
__ ret(0);
|
|
}
|
|
break;
|
|
#endif // TIERED
|
|
|
|
case new_type_array_id:
|
|
case new_object_array_id:
|
|
{
|
|
Register length = rbx; // Incoming
|
|
Register klass = rdx; // Incoming
|
|
Register obj = rax; // Result
|
|
|
|
if (id == new_type_array_id) {
|
|
__ set_info("new_type_array", dont_gc_arguments);
|
|
} else {
|
|
__ set_info("new_object_array", dont_gc_arguments);
|
|
}
|
|
|
|
#ifdef ASSERT
|
|
// assert object type is really an array of the proper kind
|
|
{
|
|
Label ok;
|
|
Register t0 = obj;
|
|
__ movl(t0, Address(klass, Klass::layout_helper_offset_in_bytes() + sizeof(oopDesc)));
|
|
__ sarl(t0, Klass::_lh_array_tag_shift);
|
|
int tag = ((id == new_type_array_id)
|
|
? Klass::_lh_array_tag_type_value
|
|
: Klass::_lh_array_tag_obj_value);
|
|
__ cmpl(t0, tag);
|
|
__ jcc(Assembler::equal, ok);
|
|
__ stop("assert(is an array klass)");
|
|
__ should_not_reach_here();
|
|
__ bind(ok);
|
|
}
|
|
#endif // ASSERT
|
|
|
|
if (UseTLAB && FastTLABRefill) {
|
|
Register arr_size = rsi;
|
|
Register t1 = rcx; // must be rcx for use as shift count
|
|
Register t2 = rdi;
|
|
Label slow_path;
|
|
assert_different_registers(length, klass, obj, arr_size, t1, t2);
|
|
|
|
// check that array length is small enough for fast path.
|
|
__ cmpl(length, C1_MacroAssembler::max_array_allocation_length);
|
|
__ jcc(Assembler::above, slow_path);
|
|
|
|
// if we got here then the TLAB allocation failed, so try
|
|
// refilling the TLAB or allocating directly from eden.
|
|
Label retry_tlab, try_eden;
|
|
__ tlab_refill(retry_tlab, try_eden, slow_path); // preserves rbx, & rdx
|
|
|
|
__ bind(retry_tlab);
|
|
|
|
// get the allocation size: round_up(hdr + length << (layout_helper & 0x1F))
|
|
// since size is postive movl does right thing on 64bit
|
|
__ movl(t1, Address(klass, klassOopDesc::header_size() * HeapWordSize + Klass::layout_helper_offset_in_bytes()));
|
|
// since size is postive movl does right thing on 64bit
|
|
__ movl(arr_size, length);
|
|
assert(t1 == rcx, "fixed register usage");
|
|
__ shlptr(arr_size /* by t1=rcx, mod 32 */);
|
|
__ shrptr(t1, Klass::_lh_header_size_shift);
|
|
__ andptr(t1, Klass::_lh_header_size_mask);
|
|
__ addptr(arr_size, t1);
|
|
__ addptr(arr_size, MinObjAlignmentInBytesMask); // align up
|
|
__ andptr(arr_size, ~MinObjAlignmentInBytesMask);
|
|
|
|
__ tlab_allocate(obj, arr_size, 0, t1, t2, slow_path); // preserves arr_size
|
|
|
|
__ initialize_header(obj, klass, length, t1, t2);
|
|
__ movb(t1, Address(klass, klassOopDesc::header_size() * HeapWordSize + Klass::layout_helper_offset_in_bytes() + (Klass::_lh_header_size_shift / BitsPerByte)));
|
|
assert(Klass::_lh_header_size_shift % BitsPerByte == 0, "bytewise");
|
|
assert(Klass::_lh_header_size_mask <= 0xFF, "bytewise");
|
|
__ andptr(t1, Klass::_lh_header_size_mask);
|
|
__ subptr(arr_size, t1); // body length
|
|
__ addptr(t1, obj); // body start
|
|
__ initialize_body(t1, arr_size, 0, t2);
|
|
__ verify_oop(obj);
|
|
__ ret(0);
|
|
|
|
__ bind(try_eden);
|
|
// get the allocation size: round_up(hdr + length << (layout_helper & 0x1F))
|
|
// since size is postive movl does right thing on 64bit
|
|
__ movl(t1, Address(klass, klassOopDesc::header_size() * HeapWordSize + Klass::layout_helper_offset_in_bytes()));
|
|
// since size is postive movl does right thing on 64bit
|
|
__ movl(arr_size, length);
|
|
assert(t1 == rcx, "fixed register usage");
|
|
__ shlptr(arr_size /* by t1=rcx, mod 32 */);
|
|
__ shrptr(t1, Klass::_lh_header_size_shift);
|
|
__ andptr(t1, Klass::_lh_header_size_mask);
|
|
__ addptr(arr_size, t1);
|
|
__ addptr(arr_size, MinObjAlignmentInBytesMask); // align up
|
|
__ andptr(arr_size, ~MinObjAlignmentInBytesMask);
|
|
|
|
__ eden_allocate(obj, arr_size, 0, t1, slow_path); // preserves arr_size
|
|
|
|
__ initialize_header(obj, klass, length, t1, t2);
|
|
__ movb(t1, Address(klass, klassOopDesc::header_size() * HeapWordSize + Klass::layout_helper_offset_in_bytes() + (Klass::_lh_header_size_shift / BitsPerByte)));
|
|
assert(Klass::_lh_header_size_shift % BitsPerByte == 0, "bytewise");
|
|
assert(Klass::_lh_header_size_mask <= 0xFF, "bytewise");
|
|
__ andptr(t1, Klass::_lh_header_size_mask);
|
|
__ subptr(arr_size, t1); // body length
|
|
__ addptr(t1, obj); // body start
|
|
__ initialize_body(t1, arr_size, 0, t2);
|
|
__ verify_oop(obj);
|
|
__ ret(0);
|
|
|
|
__ bind(slow_path);
|
|
}
|
|
|
|
__ enter();
|
|
OopMap* map = save_live_registers(sasm, 3);
|
|
int call_offset;
|
|
if (id == new_type_array_id) {
|
|
call_offset = __ call_RT(obj, noreg, CAST_FROM_FN_PTR(address, new_type_array), klass, length);
|
|
} else {
|
|
call_offset = __ call_RT(obj, noreg, CAST_FROM_FN_PTR(address, new_object_array), klass, length);
|
|
}
|
|
|
|
oop_maps = new OopMapSet();
|
|
oop_maps->add_gc_map(call_offset, map);
|
|
restore_live_registers_except_rax(sasm);
|
|
|
|
__ verify_oop(obj);
|
|
__ leave();
|
|
__ ret(0);
|
|
|
|
// rax,: new array
|
|
}
|
|
break;
|
|
|
|
case new_multi_array_id:
|
|
{ StubFrame f(sasm, "new_multi_array", dont_gc_arguments);
|
|
// rax,: klass
|
|
// rbx,: rank
|
|
// rcx: address of 1st dimension
|
|
OopMap* map = save_live_registers(sasm, 4);
|
|
int call_offset = __ call_RT(rax, noreg, CAST_FROM_FN_PTR(address, new_multi_array), rax, rbx, rcx);
|
|
|
|
oop_maps = new OopMapSet();
|
|
oop_maps->add_gc_map(call_offset, map);
|
|
restore_live_registers_except_rax(sasm);
|
|
|
|
// rax,: new multi array
|
|
__ verify_oop(rax);
|
|
}
|
|
break;
|
|
|
|
case register_finalizer_id:
|
|
{
|
|
__ set_info("register_finalizer", dont_gc_arguments);
|
|
|
|
// This is called via call_runtime so the arguments
|
|
// will be place in C abi locations
|
|
|
|
#ifdef _LP64
|
|
__ verify_oop(c_rarg0);
|
|
__ mov(rax, c_rarg0);
|
|
#else
|
|
// The object is passed on the stack and we haven't pushed a
|
|
// frame yet so it's one work away from top of stack.
|
|
__ movptr(rax, Address(rsp, 1 * BytesPerWord));
|
|
__ verify_oop(rax);
|
|
#endif // _LP64
|
|
|
|
// load the klass and check the has finalizer flag
|
|
Label register_finalizer;
|
|
Register t = rsi;
|
|
__ movptr(t, Address(rax, oopDesc::klass_offset_in_bytes()));
|
|
__ movl(t, Address(t, Klass::access_flags_offset_in_bytes() + sizeof(oopDesc)));
|
|
__ testl(t, JVM_ACC_HAS_FINALIZER);
|
|
__ jcc(Assembler::notZero, register_finalizer);
|
|
__ ret(0);
|
|
|
|
__ bind(register_finalizer);
|
|
__ enter();
|
|
OopMap* oop_map = save_live_registers(sasm, 2 /*num_rt_args */);
|
|
int call_offset = __ call_RT(noreg, noreg,
|
|
CAST_FROM_FN_PTR(address, SharedRuntime::register_finalizer), rax);
|
|
oop_maps = new OopMapSet();
|
|
oop_maps->add_gc_map(call_offset, oop_map);
|
|
|
|
// Now restore all the live registers
|
|
restore_live_registers(sasm);
|
|
|
|
__ leave();
|
|
__ ret(0);
|
|
}
|
|
break;
|
|
|
|
case throw_range_check_failed_id:
|
|
{ StubFrame f(sasm, "range_check_failed", dont_gc_arguments);
|
|
oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_range_check_exception), true);
|
|
}
|
|
break;
|
|
|
|
case throw_index_exception_id:
|
|
{ StubFrame f(sasm, "index_range_check_failed", dont_gc_arguments);
|
|
oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_index_exception), true);
|
|
}
|
|
break;
|
|
|
|
case throw_div0_exception_id:
|
|
{ StubFrame f(sasm, "throw_div0_exception", dont_gc_arguments);
|
|
oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_div0_exception), false);
|
|
}
|
|
break;
|
|
|
|
case throw_null_pointer_exception_id:
|
|
{ StubFrame f(sasm, "throw_null_pointer_exception", dont_gc_arguments);
|
|
oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_null_pointer_exception), false);
|
|
}
|
|
break;
|
|
|
|
case handle_exception_nofpu_id:
|
|
save_fpu_registers = false;
|
|
// fall through
|
|
case handle_exception_id:
|
|
{ StubFrame f(sasm, "handle_exception", dont_gc_arguments);
|
|
oop_maps = new OopMapSet();
|
|
OopMap* oop_map = save_live_registers(sasm, 1, save_fpu_registers);
|
|
generate_handle_exception(sasm, oop_maps, oop_map, save_fpu_registers);
|
|
}
|
|
break;
|
|
|
|
case unwind_exception_id:
|
|
{ __ set_info("unwind_exception", dont_gc_arguments);
|
|
// note: no stubframe since we are about to leave the current
|
|
// activation and we are calling a leaf VM function only.
|
|
generate_unwind_exception(sasm);
|
|
}
|
|
break;
|
|
|
|
case throw_array_store_exception_id:
|
|
{ StubFrame f(sasm, "throw_array_store_exception", dont_gc_arguments);
|
|
// tos + 0: link
|
|
// + 1: return address
|
|
oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_array_store_exception), false);
|
|
}
|
|
break;
|
|
|
|
case throw_class_cast_exception_id:
|
|
{ StubFrame f(sasm, "throw_class_cast_exception", dont_gc_arguments);
|
|
oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_class_cast_exception), true);
|
|
}
|
|
break;
|
|
|
|
case throw_incompatible_class_change_error_id:
|
|
{ StubFrame f(sasm, "throw_incompatible_class_cast_exception", dont_gc_arguments);
|
|
oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_incompatible_class_change_error), false);
|
|
}
|
|
break;
|
|
|
|
case slow_subtype_check_id:
|
|
{
|
|
// Typical calling sequence:
|
|
// __ push(klass_RInfo); // object klass or other subclass
|
|
// __ push(sup_k_RInfo); // array element klass or other superclass
|
|
// __ call(slow_subtype_check);
|
|
// Note that the subclass is pushed first, and is therefore deepest.
|
|
// Previous versions of this code reversed the names 'sub' and 'super'.
|
|
// This was operationally harmless but made the code unreadable.
|
|
enum layout {
|
|
rax_off, SLOT2(raxH_off)
|
|
rcx_off, SLOT2(rcxH_off)
|
|
rsi_off, SLOT2(rsiH_off)
|
|
rdi_off, SLOT2(rdiH_off)
|
|
// saved_rbp_off, SLOT2(saved_rbpH_off)
|
|
return_off, SLOT2(returnH_off)
|
|
sup_k_off, SLOT2(sup_kH_off)
|
|
klass_off, SLOT2(superH_off)
|
|
framesize,
|
|
result_off = klass_off // deepest argument is also the return value
|
|
};
|
|
|
|
__ set_info("slow_subtype_check", dont_gc_arguments);
|
|
__ push(rdi);
|
|
__ push(rsi);
|
|
__ push(rcx);
|
|
__ push(rax);
|
|
|
|
// This is called by pushing args and not with C abi
|
|
__ movptr(rsi, Address(rsp, (klass_off) * VMRegImpl::stack_slot_size)); // subclass
|
|
__ movptr(rax, Address(rsp, (sup_k_off) * VMRegImpl::stack_slot_size)); // superclass
|
|
|
|
Label miss;
|
|
__ check_klass_subtype_slow_path(rsi, rax, rcx, rdi, NULL, &miss);
|
|
|
|
// fallthrough on success:
|
|
__ movptr(Address(rsp, (result_off) * VMRegImpl::stack_slot_size), 1); // result
|
|
__ pop(rax);
|
|
__ pop(rcx);
|
|
__ pop(rsi);
|
|
__ pop(rdi);
|
|
__ ret(0);
|
|
|
|
__ bind(miss);
|
|
__ movptr(Address(rsp, (result_off) * VMRegImpl::stack_slot_size), NULL_WORD); // result
|
|
__ pop(rax);
|
|
__ pop(rcx);
|
|
__ pop(rsi);
|
|
__ pop(rdi);
|
|
__ ret(0);
|
|
}
|
|
break;
|
|
|
|
case monitorenter_nofpu_id:
|
|
save_fpu_registers = false;
|
|
// fall through
|
|
case monitorenter_id:
|
|
{
|
|
StubFrame f(sasm, "monitorenter", dont_gc_arguments);
|
|
OopMap* map = save_live_registers(sasm, 3, save_fpu_registers);
|
|
|
|
// Called with store_parameter and not C abi
|
|
|
|
f.load_argument(1, rax); // rax,: object
|
|
f.load_argument(0, rbx); // rbx,: lock address
|
|
|
|
int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorenter), rax, rbx);
|
|
|
|
oop_maps = new OopMapSet();
|
|
oop_maps->add_gc_map(call_offset, map);
|
|
restore_live_registers(sasm, save_fpu_registers);
|
|
}
|
|
break;
|
|
|
|
case monitorexit_nofpu_id:
|
|
save_fpu_registers = false;
|
|
// fall through
|
|
case monitorexit_id:
|
|
{
|
|
StubFrame f(sasm, "monitorexit", dont_gc_arguments);
|
|
OopMap* map = save_live_registers(sasm, 2, save_fpu_registers);
|
|
|
|
// Called with store_parameter and not C abi
|
|
|
|
f.load_argument(0, rax); // rax,: lock address
|
|
|
|
// note: really a leaf routine but must setup last java sp
|
|
// => use call_RT for now (speed can be improved by
|
|
// doing last java sp setup manually)
|
|
int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorexit), rax);
|
|
|
|
oop_maps = new OopMapSet();
|
|
oop_maps->add_gc_map(call_offset, map);
|
|
restore_live_registers(sasm, save_fpu_registers);
|
|
|
|
}
|
|
break;
|
|
|
|
case access_field_patching_id:
|
|
{ StubFrame f(sasm, "access_field_patching", dont_gc_arguments);
|
|
// we should set up register map
|
|
oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, access_field_patching));
|
|
}
|
|
break;
|
|
|
|
case load_klass_patching_id:
|
|
{ StubFrame f(sasm, "load_klass_patching", dont_gc_arguments);
|
|
// we should set up register map
|
|
oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_klass_patching));
|
|
}
|
|
break;
|
|
|
|
case jvmti_exception_throw_id:
|
|
{ // rax,: exception oop
|
|
StubFrame f(sasm, "jvmti_exception_throw", dont_gc_arguments);
|
|
// Preserve all registers across this potentially blocking call
|
|
const int num_rt_args = 2; // thread, exception oop
|
|
OopMap* map = save_live_registers(sasm, num_rt_args);
|
|
int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, Runtime1::post_jvmti_exception_throw), rax);
|
|
oop_maps = new OopMapSet();
|
|
oop_maps->add_gc_map(call_offset, map);
|
|
restore_live_registers(sasm);
|
|
}
|
|
break;
|
|
|
|
case dtrace_object_alloc_id:
|
|
{ // rax,: object
|
|
StubFrame f(sasm, "dtrace_object_alloc", dont_gc_arguments);
|
|
// we can't gc here so skip the oopmap but make sure that all
|
|
// the live registers get saved.
|
|
save_live_registers(sasm, 1);
|
|
|
|
__ NOT_LP64(push(rax)) LP64_ONLY(mov(c_rarg0, rax));
|
|
__ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc)));
|
|
NOT_LP64(__ pop(rax));
|
|
|
|
restore_live_registers(sasm);
|
|
}
|
|
break;
|
|
|
|
case fpu2long_stub_id:
|
|
{
|
|
// rax, and rdx are destroyed, but should be free since the result is returned there
|
|
// preserve rsi,ecx
|
|
__ push(rsi);
|
|
__ push(rcx);
|
|
LP64_ONLY(__ push(rdx);)
|
|
|
|
// check for NaN
|
|
Label return0, do_return, return_min_jlong, do_convert;
|
|
|
|
Address value_high_word(rsp, wordSize + 4);
|
|
Address value_low_word(rsp, wordSize);
|
|
Address result_high_word(rsp, 3*wordSize + 4);
|
|
Address result_low_word(rsp, 3*wordSize);
|
|
|
|
__ subptr(rsp, 32); // more than enough on 32bit
|
|
__ fst_d(value_low_word);
|
|
__ movl(rax, value_high_word);
|
|
__ andl(rax, 0x7ff00000);
|
|
__ cmpl(rax, 0x7ff00000);
|
|
__ jcc(Assembler::notEqual, do_convert);
|
|
__ movl(rax, value_high_word);
|
|
__ andl(rax, 0xfffff);
|
|
__ orl(rax, value_low_word);
|
|
__ jcc(Assembler::notZero, return0);
|
|
|
|
__ bind(do_convert);
|
|
__ fnstcw(Address(rsp, 0));
|
|
__ movzwl(rax, Address(rsp, 0));
|
|
__ orl(rax, 0xc00);
|
|
__ movw(Address(rsp, 2), rax);
|
|
__ fldcw(Address(rsp, 2));
|
|
__ fwait();
|
|
__ fistp_d(result_low_word);
|
|
__ fldcw(Address(rsp, 0));
|
|
__ fwait();
|
|
// This gets the entire long in rax on 64bit
|
|
__ movptr(rax, result_low_word);
|
|
// testing of high bits
|
|
__ movl(rdx, result_high_word);
|
|
__ mov(rcx, rax);
|
|
// What the heck is the point of the next instruction???
|
|
__ xorl(rcx, 0x0);
|
|
__ movl(rsi, 0x80000000);
|
|
__ xorl(rsi, rdx);
|
|
__ orl(rcx, rsi);
|
|
__ jcc(Assembler::notEqual, do_return);
|
|
__ fldz();
|
|
__ fcomp_d(value_low_word);
|
|
__ fnstsw_ax();
|
|
#ifdef _LP64
|
|
__ testl(rax, 0x4100); // ZF & CF == 0
|
|
__ jcc(Assembler::equal, return_min_jlong);
|
|
#else
|
|
__ sahf();
|
|
__ jcc(Assembler::above, return_min_jlong);
|
|
#endif // _LP64
|
|
// return max_jlong
|
|
#ifndef _LP64
|
|
__ movl(rdx, 0x7fffffff);
|
|
__ movl(rax, 0xffffffff);
|
|
#else
|
|
__ mov64(rax, CONST64(0x7fffffffffffffff));
|
|
#endif // _LP64
|
|
__ jmp(do_return);
|
|
|
|
__ bind(return_min_jlong);
|
|
#ifndef _LP64
|
|
__ movl(rdx, 0x80000000);
|
|
__ xorl(rax, rax);
|
|
#else
|
|
__ mov64(rax, CONST64(0x8000000000000000));
|
|
#endif // _LP64
|
|
__ jmp(do_return);
|
|
|
|
__ bind(return0);
|
|
__ fpop();
|
|
#ifndef _LP64
|
|
__ xorptr(rdx,rdx);
|
|
__ xorptr(rax,rax);
|
|
#else
|
|
__ xorptr(rax, rax);
|
|
#endif // _LP64
|
|
|
|
__ bind(do_return);
|
|
__ addptr(rsp, 32);
|
|
LP64_ONLY(__ pop(rdx);)
|
|
__ pop(rcx);
|
|
__ pop(rsi);
|
|
__ ret(0);
|
|
}
|
|
break;
|
|
|
|
#ifndef SERIALGC
|
|
case g1_pre_barrier_slow_id:
|
|
{
|
|
StubFrame f(sasm, "g1_pre_barrier", dont_gc_arguments);
|
|
// arg0 : previous value of memory
|
|
|
|
BarrierSet* bs = Universe::heap()->barrier_set();
|
|
if (bs->kind() != BarrierSet::G1SATBCTLogging) {
|
|
__ movptr(rax, (int)id);
|
|
__ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), rax);
|
|
__ should_not_reach_here();
|
|
break;
|
|
}
|
|
|
|
__ push(rax);
|
|
__ push(rdx);
|
|
|
|
const Register pre_val = rax;
|
|
const Register thread = NOT_LP64(rax) LP64_ONLY(r15_thread);
|
|
const Register tmp = rdx;
|
|
|
|
NOT_LP64(__ get_thread(thread);)
|
|
|
|
Address in_progress(thread, in_bytes(JavaThread::satb_mark_queue_offset() +
|
|
PtrQueue::byte_offset_of_active()));
|
|
|
|
Address queue_index(thread, in_bytes(JavaThread::satb_mark_queue_offset() +
|
|
PtrQueue::byte_offset_of_index()));
|
|
Address buffer(thread, in_bytes(JavaThread::satb_mark_queue_offset() +
|
|
PtrQueue::byte_offset_of_buf()));
|
|
|
|
|
|
Label done;
|
|
Label runtime;
|
|
|
|
// Can we store original value in the thread's buffer?
|
|
|
|
LP64_ONLY(__ movslq(tmp, queue_index);)
|
|
#ifdef _LP64
|
|
__ cmpq(tmp, 0);
|
|
#else
|
|
__ cmpl(queue_index, 0);
|
|
#endif
|
|
__ jcc(Assembler::equal, runtime);
|
|
#ifdef _LP64
|
|
__ subq(tmp, wordSize);
|
|
__ movl(queue_index, tmp);
|
|
__ addq(tmp, buffer);
|
|
#else
|
|
__ subl(queue_index, wordSize);
|
|
__ movl(tmp, buffer);
|
|
__ addl(tmp, queue_index);
|
|
#endif
|
|
|
|
// prev_val (rax)
|
|
f.load_argument(0, pre_val);
|
|
__ movptr(Address(tmp, 0), pre_val);
|
|
__ jmp(done);
|
|
|
|
__ bind(runtime);
|
|
// load the pre-value
|
|
__ push(rcx);
|
|
f.load_argument(0, rcx);
|
|
__ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::g1_wb_pre), rcx, thread);
|
|
__ pop(rcx);
|
|
|
|
__ bind(done);
|
|
__ pop(rdx);
|
|
__ pop(rax);
|
|
}
|
|
break;
|
|
|
|
case g1_post_barrier_slow_id:
|
|
{
|
|
StubFrame f(sasm, "g1_post_barrier", dont_gc_arguments);
|
|
|
|
|
|
// arg0: store_address
|
|
Address store_addr(rbp, 2*BytesPerWord);
|
|
|
|
BarrierSet* bs = Universe::heap()->barrier_set();
|
|
CardTableModRefBS* ct = (CardTableModRefBS*)bs;
|
|
Label done;
|
|
Label runtime;
|
|
|
|
// At this point we know new_value is non-NULL and the new_value crosses regsion.
|
|
// Must check to see if card is already dirty
|
|
|
|
const Register thread = NOT_LP64(rax) LP64_ONLY(r15_thread);
|
|
|
|
Address queue_index(thread, in_bytes(JavaThread::dirty_card_queue_offset() +
|
|
PtrQueue::byte_offset_of_index()));
|
|
Address buffer(thread, in_bytes(JavaThread::dirty_card_queue_offset() +
|
|
PtrQueue::byte_offset_of_buf()));
|
|
|
|
__ push(rax);
|
|
__ push(rdx);
|
|
|
|
NOT_LP64(__ get_thread(thread);)
|
|
ExternalAddress cardtable((address)ct->byte_map_base);
|
|
assert(sizeof(*ct->byte_map_base) == sizeof(jbyte), "adjust this code");
|
|
|
|
const Register card_addr = rdx;
|
|
#ifdef _LP64
|
|
const Register tmp = rscratch1;
|
|
f.load_argument(0, card_addr);
|
|
__ shrq(card_addr, CardTableModRefBS::card_shift);
|
|
__ lea(tmp, cardtable);
|
|
// get the address of the card
|
|
__ addq(card_addr, tmp);
|
|
#else
|
|
const Register card_index = rdx;
|
|
f.load_argument(0, card_index);
|
|
__ shrl(card_index, CardTableModRefBS::card_shift);
|
|
|
|
Address index(noreg, card_index, Address::times_1);
|
|
__ leal(card_addr, __ as_Address(ArrayAddress(cardtable, index)));
|
|
#endif
|
|
|
|
__ cmpb(Address(card_addr, 0), 0);
|
|
__ jcc(Assembler::equal, done);
|
|
|
|
// storing region crossing non-NULL, card is clean.
|
|
// dirty card and log.
|
|
|
|
__ movb(Address(card_addr, 0), 0);
|
|
|
|
__ cmpl(queue_index, 0);
|
|
__ jcc(Assembler::equal, runtime);
|
|
__ subl(queue_index, wordSize);
|
|
|
|
const Register buffer_addr = rbx;
|
|
__ push(rbx);
|
|
|
|
__ movptr(buffer_addr, buffer);
|
|
|
|
#ifdef _LP64
|
|
__ movslq(rscratch1, queue_index);
|
|
__ addptr(buffer_addr, rscratch1);
|
|
#else
|
|
__ addptr(buffer_addr, queue_index);
|
|
#endif
|
|
__ movptr(Address(buffer_addr, 0), card_addr);
|
|
|
|
__ pop(rbx);
|
|
__ jmp(done);
|
|
|
|
__ bind(runtime);
|
|
NOT_LP64(__ push(rcx);)
|
|
__ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::g1_wb_post), card_addr, thread);
|
|
NOT_LP64(__ pop(rcx);)
|
|
|
|
__ bind(done);
|
|
__ pop(rdx);
|
|
__ pop(rax);
|
|
|
|
}
|
|
break;
|
|
#endif // !SERIALGC
|
|
|
|
default:
|
|
{ StubFrame f(sasm, "unimplemented entry", dont_gc_arguments);
|
|
__ movptr(rax, (int)id);
|
|
__ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), rax);
|
|
__ should_not_reach_here();
|
|
}
|
|
break;
|
|
}
|
|
return oop_maps;
|
|
}
|
|
|
|
#undef __
|