913 lines
32 KiB
C++
913 lines
32 KiB
C++
/*
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* Copyright (c) 1999, 2018, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "c1/c1_Defs.hpp"
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#include "c1/c1_MacroAssembler.hpp"
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#include "c1/c1_Runtime1.hpp"
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#include "ci/ciUtilities.hpp"
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#include "gc/shared/cardTable.hpp"
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#include "gc/shared/cardTableBarrierSet.hpp"
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#include "interpreter/interpreter.hpp"
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#include "nativeInst_sparc.hpp"
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#include "oops/compiledICHolder.hpp"
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#include "oops/oop.inline.hpp"
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#include "prims/jvmtiExport.hpp"
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#include "runtime/sharedRuntime.hpp"
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#include "runtime/signature.hpp"
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#include "runtime/vframeArray.hpp"
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#include "utilities/macros.hpp"
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#include "utilities/align.hpp"
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#include "vmreg_sparc.inline.hpp"
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// Implementation of StubAssembler
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int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry_point, int number_of_arguments) {
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// for sparc changing the number of arguments doesn't change
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// anything about the frame size so we'll always lie and claim that
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// we are only passing 1 argument.
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set_num_rt_args(1);
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assert_not_delayed();
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// bang stack before going to runtime
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set(-os::vm_page_size() + STACK_BIAS, G3_scratch);
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st(G0, SP, G3_scratch);
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// debugging support
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assert(number_of_arguments >= 0 , "cannot have negative number of arguments");
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set_last_Java_frame(SP, noreg);
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if (VerifyThread) mov(G2_thread, O0); // about to be smashed; pass early
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save_thread(L7_thread_cache);
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// do the call
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call(entry_point, relocInfo::runtime_call_type);
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if (!VerifyThread) {
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delayed()->mov(G2_thread, O0); // pass thread as first argument
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} else {
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delayed()->nop(); // (thread already passed)
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}
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int call_offset = offset(); // offset of return address
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restore_thread(L7_thread_cache);
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reset_last_Java_frame();
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// check for pending exceptions
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{ Label L;
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Address exception_addr(G2_thread, Thread::pending_exception_offset());
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ld_ptr(exception_addr, Gtemp);
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br_null_short(Gtemp, pt, L);
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Address vm_result_addr(G2_thread, JavaThread::vm_result_offset());
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st_ptr(G0, vm_result_addr);
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Address vm_result_addr_2(G2_thread, JavaThread::vm_result_2_offset());
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st_ptr(G0, vm_result_addr_2);
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if (frame_size() == no_frame_size) {
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// we use O7 linkage so that forward_exception_entry has the issuing PC
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call(StubRoutines::forward_exception_entry(), relocInfo::runtime_call_type);
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delayed()->restore();
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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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AddressLiteral exc(Runtime1::entry_for(Runtime1::forward_exception_id));
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jump_to(exc, G4);
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delayed()->nop();
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}
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bind(L);
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}
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// get oop result if there is one and reset the value in the thread
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if (oop_result1->is_valid()) { // get oop result if there is one and reset it in the thread
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get_vm_result (oop_result1);
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} else {
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// be a little paranoid and clear the result
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Address vm_result_addr(G2_thread, JavaThread::vm_result_offset());
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st_ptr(G0, vm_result_addr);
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}
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// get second result if there is one and reset the value in the thread
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if (metadata_result->is_valid()) {
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get_vm_result_2 (metadata_result);
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} else {
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// be a little paranoid and clear the result
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Address vm_result_addr_2(G2_thread, JavaThread::vm_result_2_offset());
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st_ptr(G0, vm_result_addr_2);
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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 metadata_result, address entry, Register arg1) {
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// O0 is reserved for the thread
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mov(arg1, O1);
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return call_RT(oop_result1, metadata_result, entry, 1);
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}
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int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1, Register arg2) {
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// O0 is reserved for the thread
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mov(arg1, O1);
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mov(arg2, O2); assert(arg2 != O1, "smashed argument");
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return call_RT(oop_result1, metadata_result, entry, 2);
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}
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int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1, Register arg2, Register arg3) {
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// O0 is reserved for the thread
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mov(arg1, O1);
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mov(arg2, O2); assert(arg2 != O1, "smashed argument");
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mov(arg3, O3); assert(arg3 != O1 && arg3 != O2, "smashed argument");
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return call_RT(oop_result1, metadata_result, entry, 3);
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}
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void StubAssembler::prologue(const char* name, bool must_gc_arguments) {
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set_info(name, must_gc_arguments);
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}
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void StubAssembler::epilogue() {
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delayed()->restore();
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}
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// Implementation of Runtime1
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static int cpu_reg_save_offsets[FrameMap::nof_cpu_regs];
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static int fpu_reg_save_offsets[FrameMap::nof_fpu_regs];
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static int reg_save_size_in_words;
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static int frame_size_in_bytes = -1;
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static OopMap* generate_oop_map(StubAssembler* sasm, bool save_fpu_registers) {
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assert(frame_size_in_bytes == sasm->total_frame_size_in_bytes(reg_save_size_in_words),
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"mismatch in calculation");
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sasm->set_frame_size(frame_size_in_bytes / BytesPerWord);
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int frame_size_in_slots = frame_size_in_bytes / sizeof(jint);
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OopMap* oop_map = new OopMap(frame_size_in_slots, 0);
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int i;
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for (i = 0; i < FrameMap::nof_cpu_regs; i++) {
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Register r = as_Register(i);
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if (r == G1 || r == G3 || r == G4 || r == G5) {
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int sp_offset = cpu_reg_save_offsets[i];
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oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset),
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r->as_VMReg());
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}
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}
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if (save_fpu_registers) {
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for (i = 0; i < FrameMap::nof_fpu_regs; i++) {
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FloatRegister r = as_FloatRegister(i);
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int sp_offset = fpu_reg_save_offsets[i];
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oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset),
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r->as_VMReg());
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}
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}
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return oop_map;
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}
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#define __ this->
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void C1_MacroAssembler::save_live_registers_no_oop_map(bool save_fpu_registers) {
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assert(frame_size_in_bytes == __ total_frame_size_in_bytes(reg_save_size_in_words),
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"mismatch in calculation");
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__ save_frame_c1(frame_size_in_bytes);
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// Record volatile registers as callee-save values in an OopMap so their save locations will be
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// propagated to the caller frame's RegisterMap during StackFrameStream construction (needed for
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// deoptimization; see compiledVFrame::create_stack_value). The caller's I, L and O registers
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// are saved in register windows - I's and L's in the caller's frame and O's in the stub frame
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// (as the stub's I's) when the runtime routine called by the stub creates its frame.
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// OopMap frame sizes are in c2 stack slot sizes (sizeof(jint))
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int i;
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for (i = 0; i < FrameMap::nof_cpu_regs; i++) {
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Register r = as_Register(i);
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if (r == G1 || r == G3 || r == G4 || r == G5) {
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int sp_offset = cpu_reg_save_offsets[i];
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__ st_ptr(r, SP, (sp_offset * BytesPerWord) + STACK_BIAS);
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}
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}
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if (save_fpu_registers) {
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for (i = 0; i < FrameMap::nof_fpu_regs; i++) {
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FloatRegister r = as_FloatRegister(i);
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int sp_offset = fpu_reg_save_offsets[i];
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__ stf(FloatRegisterImpl::S, r, SP, (sp_offset * BytesPerWord) + STACK_BIAS);
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}
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}
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}
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void C1_MacroAssembler::restore_live_registers(bool restore_fpu_registers) {
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for (int i = 0; i < FrameMap::nof_cpu_regs; i++) {
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Register r = as_Register(i);
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if (r == G1 || r == G3 || r == G4 || r == G5) {
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__ ld_ptr(SP, (cpu_reg_save_offsets[i] * BytesPerWord) + STACK_BIAS, r);
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}
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}
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if (restore_fpu_registers) {
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for (int i = 0; i < FrameMap::nof_fpu_regs; i++) {
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FloatRegister r = as_FloatRegister(i);
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__ ldf(FloatRegisterImpl::S, SP, (fpu_reg_save_offsets[i] * BytesPerWord) + STACK_BIAS, r);
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}
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}
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}
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#undef __
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#define __ sasm->
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static OopMap* save_live_registers(StubAssembler* sasm, bool save_fpu_registers = true) {
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sasm->save_live_registers_no_oop_map(save_fpu_registers);
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return generate_oop_map(sasm, save_fpu_registers);
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}
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static void restore_live_registers(StubAssembler* sasm, bool restore_fpu_registers = true) {
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sasm->restore_live_registers(restore_fpu_registers);
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}
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void Runtime1::initialize_pd() {
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// compute word offsets from SP at which live (non-windowed) registers are captured by stub routines
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//
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// A stub routine will have a frame that is at least large enough to hold
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// a register window save area (obviously) and the volatile g registers
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// and floating registers. A user of save_live_registers can have a frame
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// that has more scratch area in it (although typically they will use L-regs).
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// in that case the frame will look like this (stack growing down)
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//
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// FP -> | |
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// | scratch mem |
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// | " " |
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// --------------
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// | float regs |
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// | " " |
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// ---------------
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// | G regs |
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// | " " |
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// ---------------
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// | abi reg. |
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// | window save |
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// | area |
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// SP -> ---------------
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//
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int i;
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int sp_offset = align_up((int)frame::register_save_words, 2); // start doubleword aligned
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// only G int registers are saved explicitly; others are found in register windows
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for (i = 0; i < FrameMap::nof_cpu_regs; i++) {
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Register r = as_Register(i);
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if (r == G1 || r == G3 || r == G4 || r == G5) {
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cpu_reg_save_offsets[i] = sp_offset;
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sp_offset++;
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}
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}
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// all float registers are saved explicitly
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assert(FrameMap::nof_fpu_regs == 32, "double registers not handled here");
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for (i = 0; i < FrameMap::nof_fpu_regs; i++) {
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fpu_reg_save_offsets[i] = sp_offset;
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sp_offset++;
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}
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reg_save_size_in_words = sp_offset - frame::memory_parameter_word_sp_offset;
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// this should match assembler::total_frame_size_in_bytes, which
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// isn't callable from this context. It's checked by an assert when
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// it's used though.
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frame_size_in_bytes = align_up(sp_offset * wordSize, 8);
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}
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OopMapSet* Runtime1::generate_exception_throw(StubAssembler* sasm, address target, bool has_argument) {
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// make a frame and preserve the caller's caller-save registers
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OopMap* oop_map = save_live_registers(sasm);
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int call_offset;
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if (!has_argument) {
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call_offset = __ call_RT(noreg, noreg, target);
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} else {
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call_offset = __ call_RT(noreg, noreg, target, G4);
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}
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OopMapSet* oop_maps = new OopMapSet();
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oop_maps->add_gc_map(call_offset, oop_map);
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__ should_not_reach_here();
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return oop_maps;
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}
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OopMapSet* Runtime1::generate_stub_call(StubAssembler* sasm, Register result, address target,
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Register arg1, Register arg2, Register arg3) {
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// make a frame and preserve the caller's caller-save registers
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OopMap* oop_map = save_live_registers(sasm);
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int call_offset;
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if (arg1 == noreg) {
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call_offset = __ call_RT(result, noreg, target);
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} else if (arg2 == noreg) {
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call_offset = __ call_RT(result, noreg, target, arg1);
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} else if (arg3 == noreg) {
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call_offset = __ call_RT(result, noreg, target, arg1, arg2);
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} else {
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call_offset = __ call_RT(result, noreg, target, arg1, arg2, arg3);
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}
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OopMapSet* oop_maps = NULL;
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oop_maps = new OopMapSet();
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oop_maps->add_gc_map(call_offset, oop_map);
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restore_live_registers(sasm);
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__ ret();
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__ delayed()->restore();
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return oop_maps;
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}
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OopMapSet* Runtime1::generate_patching(StubAssembler* sasm, address target) {
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// make a frame and preserve the caller's caller-save registers
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OopMap* oop_map = save_live_registers(sasm);
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// call the runtime patching routine, returns non-zero if nmethod got deopted.
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int call_offset = __ call_RT(noreg, noreg, target);
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OopMapSet* oop_maps = new OopMapSet();
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oop_maps->add_gc_map(call_offset, oop_map);
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// re-execute the patched instruction or, if the nmethod was deoptmized, return to the
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// deoptimization handler entry that will cause re-execution of the current bytecode
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DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob();
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assert(deopt_blob != NULL, "deoptimization blob must have been created");
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Label no_deopt;
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__ br_null_short(O0, Assembler::pt, no_deopt);
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// return to the deoptimization handler entry for unpacking and rexecute
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// if we simply returned the we'd deopt as if any call we patched had just
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// returned.
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restore_live_registers(sasm);
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AddressLiteral dest(deopt_blob->unpack_with_reexecution());
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__ jump_to(dest, O0);
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__ delayed()->restore();
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__ bind(no_deopt);
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restore_live_registers(sasm);
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__ ret();
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__ delayed()->restore();
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return oop_maps;
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}
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OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) {
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OopMapSet* oop_maps = NULL;
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// for better readability
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const bool must_gc_arguments = true;
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const bool dont_gc_arguments = false;
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// stub code & info for the different stubs
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switch (id) {
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case forward_exception_id:
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{
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oop_maps = generate_handle_exception(id, sasm);
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}
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break;
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case new_instance_id:
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case fast_new_instance_id:
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case fast_new_instance_init_check_id:
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{
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Register G5_klass = G5; // Incoming
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Register O0_obj = O0; // Outgoing
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if (id == new_instance_id) {
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__ set_info("new_instance", dont_gc_arguments);
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} else if (id == fast_new_instance_id) {
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__ set_info("fast new_instance", dont_gc_arguments);
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} else {
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assert(id == fast_new_instance_init_check_id, "bad StubID");
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__ set_info("fast new_instance init check", dont_gc_arguments);
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}
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if ((id == fast_new_instance_id || id == fast_new_instance_init_check_id) &&
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UseTLAB && Universe::heap()->supports_inline_contig_alloc()) {
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Label slow_path;
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Register G1_obj_size = G1;
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Register G3_t1 = G3;
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Register G4_t2 = G4;
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assert_different_registers(G5_klass, G1_obj_size, G3_t1, G4_t2);
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// Push a frame since we may do dtrace notification for the
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// allocation which requires calling out and we don't want
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// to stomp the real return address.
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__ save_frame(0);
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if (id == fast_new_instance_init_check_id) {
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// make sure the klass is initialized
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__ ldub(G5_klass, in_bytes(InstanceKlass::init_state_offset()), G3_t1);
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__ cmp(G3_t1, InstanceKlass::fully_initialized);
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__ br(Assembler::notEqual, false, Assembler::pn, slow_path);
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__ delayed()->nop();
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}
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#ifdef ASSERT
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// assert object can be fast path allocated
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{
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Label ok, not_ok;
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__ ld(G5_klass, in_bytes(Klass::layout_helper_offset()), G1_obj_size);
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// make sure it's an instance (LH > 0)
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__ cmp_and_br_short(G1_obj_size, 0, Assembler::lessEqual, Assembler::pn, not_ok);
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__ btst(Klass::_lh_instance_slow_path_bit, G1_obj_size);
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__ br(Assembler::zero, false, Assembler::pn, ok);
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__ delayed()->nop();
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__ bind(not_ok);
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__ stop("assert(can be fast path allocated)");
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__ should_not_reach_here();
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__ bind(ok);
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}
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#endif // ASSERT
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// If we got here then the TLAB allocation failed, so try allocating directly from eden.
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// get the instance size
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|
__ ld(G5_klass, in_bytes(Klass::layout_helper_offset()), G1_obj_size);
|
|
__ eden_allocate(O0_obj, G1_obj_size, 0, G3_t1, G4_t2, slow_path);
|
|
__ incr_allocated_bytes(G1_obj_size, G3_t1, G4_t2);
|
|
|
|
__ initialize_object(O0_obj, G5_klass, G1_obj_size, 0, G3_t1, G4_t2, /* is_tlab_allocated */ false);
|
|
__ verify_oop(O0_obj);
|
|
__ mov(O0, I0);
|
|
__ ret();
|
|
__ delayed()->restore();
|
|
|
|
__ bind(slow_path);
|
|
|
|
// pop this frame so generate_stub_call can push it's own
|
|
__ restore();
|
|
}
|
|
|
|
oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_instance), G5_klass);
|
|
// I0->O0: new instance
|
|
}
|
|
|
|
break;
|
|
|
|
case counter_overflow_id:
|
|
// G4 contains bci, G5 contains method
|
|
oop_maps = generate_stub_call(sasm, noreg, CAST_FROM_FN_PTR(address, counter_overflow), G4, G5);
|
|
break;
|
|
|
|
case new_type_array_id:
|
|
case new_object_array_id:
|
|
{
|
|
Register G5_klass = G5; // Incoming
|
|
Register G4_length = G4; // Incoming
|
|
Register O0_obj = O0; // Outgoing
|
|
|
|
Address klass_lh(G5_klass, Klass::layout_helper_offset());
|
|
assert(Klass::_lh_header_size_shift % BitsPerByte == 0, "bytewise");
|
|
assert(Klass::_lh_header_size_mask == 0xFF, "bytewise");
|
|
// Use this offset to pick out an individual byte of the layout_helper:
|
|
const int klass_lh_header_size_offset = ((BytesPerInt - 1) // 3 - 2 selects byte {0,1,0,0}
|
|
- Klass::_lh_header_size_shift / BitsPerByte);
|
|
|
|
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 G3_t1 = G3;
|
|
__ ld(klass_lh, G3_t1);
|
|
__ sra(G3_t1, Klass::_lh_array_tag_shift, G3_t1);
|
|
int tag = ((id == new_type_array_id)
|
|
? Klass::_lh_array_tag_type_value
|
|
: Klass::_lh_array_tag_obj_value);
|
|
__ cmp_and_brx_short(G3_t1, tag, Assembler::equal, Assembler::pt, ok);
|
|
__ stop("assert(is an array klass)");
|
|
__ should_not_reach_here();
|
|
__ bind(ok);
|
|
}
|
|
#endif // ASSERT
|
|
|
|
if (id == new_type_array_id) {
|
|
oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_type_array), G5_klass, G4_length);
|
|
} else {
|
|
oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_object_array), G5_klass, G4_length);
|
|
}
|
|
// I0 -> O0: new array
|
|
}
|
|
break;
|
|
|
|
case new_multi_array_id:
|
|
{ // O0: klass
|
|
// O1: rank
|
|
// O2: address of 1st dimension
|
|
__ set_info("new_multi_array", dont_gc_arguments);
|
|
oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_multi_array), I0, I1, I2);
|
|
// I0 -> O0: new multi array
|
|
}
|
|
break;
|
|
|
|
case register_finalizer_id:
|
|
{
|
|
__ set_info("register_finalizer", dont_gc_arguments);
|
|
|
|
// load the klass and check the has finalizer flag
|
|
Label register_finalizer;
|
|
Register t = O1;
|
|
__ load_klass(O0, t);
|
|
__ ld(t, in_bytes(Klass::access_flags_offset()), t);
|
|
__ set(JVM_ACC_HAS_FINALIZER, G3);
|
|
__ andcc(G3, t, G0);
|
|
__ br(Assembler::notZero, false, Assembler::pt, register_finalizer);
|
|
__ delayed()->nop();
|
|
|
|
// do a leaf return
|
|
__ retl();
|
|
__ delayed()->nop();
|
|
|
|
__ bind(register_finalizer);
|
|
OopMap* oop_map = save_live_registers(sasm);
|
|
int call_offset = __ call_RT(noreg, noreg,
|
|
CAST_FROM_FN_PTR(address, SharedRuntime::register_finalizer), I0);
|
|
oop_maps = new OopMapSet();
|
|
oop_maps->add_gc_map(call_offset, oop_map);
|
|
|
|
// Now restore all the live registers
|
|
restore_live_registers(sasm);
|
|
|
|
__ ret();
|
|
__ delayed()->restore();
|
|
}
|
|
break;
|
|
|
|
case throw_range_check_failed_id:
|
|
{ __ set_info("range_check_failed", dont_gc_arguments); // arguments will be discarded
|
|
// G4: index
|
|
oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_range_check_exception), true);
|
|
}
|
|
break;
|
|
|
|
case throw_index_exception_id:
|
|
{ __ set_info("index_range_check_failed", dont_gc_arguments); // arguments will be discarded
|
|
// G4: index
|
|
oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_index_exception), true);
|
|
}
|
|
break;
|
|
|
|
case throw_div0_exception_id:
|
|
{ __ set_info("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:
|
|
{ __ set_info("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_id:
|
|
{ __ set_info("handle_exception", dont_gc_arguments);
|
|
oop_maps = generate_handle_exception(id, sasm);
|
|
}
|
|
break;
|
|
|
|
case handle_exception_from_callee_id:
|
|
{ __ set_info("handle_exception_from_callee", dont_gc_arguments);
|
|
oop_maps = generate_handle_exception(id, sasm);
|
|
}
|
|
break;
|
|
|
|
case unwind_exception_id:
|
|
{
|
|
// O0: exception
|
|
// I7: address of call to this method
|
|
|
|
__ set_info("unwind_exception", dont_gc_arguments);
|
|
__ mov(Oexception, Oexception->after_save());
|
|
__ add(I7, frame::pc_return_offset, Oissuing_pc->after_save());
|
|
|
|
__ call_VM_leaf(L7_thread_cache, CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address),
|
|
G2_thread, Oissuing_pc->after_save());
|
|
__ verify_not_null_oop(Oexception->after_save());
|
|
|
|
// Restore SP from L7 if the exception PC is a method handle call site.
|
|
__ mov(O0, G5); // Save the target address.
|
|
__ lduw(Address(G2_thread, JavaThread::is_method_handle_return_offset()), L0);
|
|
__ tst(L0); // Condition codes are preserved over the restore.
|
|
__ restore();
|
|
|
|
__ jmp(G5, 0);
|
|
__ delayed()->movcc(Assembler::notZero, false, Assembler::icc, L7_mh_SP_save, SP); // Restore SP if required.
|
|
}
|
|
break;
|
|
|
|
case throw_array_store_exception_id:
|
|
{
|
|
__ set_info("throw_array_store_exception", dont_gc_arguments);
|
|
oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_array_store_exception), true);
|
|
}
|
|
break;
|
|
|
|
case throw_class_cast_exception_id:
|
|
{
|
|
// G4: object
|
|
__ set_info("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:
|
|
{
|
|
__ set_info("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:
|
|
{ // Support for uint StubRoutine::partial_subtype_check( Klass sub, Klass super );
|
|
// Arguments :
|
|
//
|
|
// ret : G3
|
|
// sub : G3, argument, destroyed
|
|
// super: G1, argument, not changed
|
|
// raddr: O7, blown by call
|
|
Label miss;
|
|
|
|
__ save_frame(0); // Blow no registers!
|
|
|
|
__ check_klass_subtype_slow_path(G3, G1, L0, L1, L2, L4, NULL, &miss);
|
|
|
|
__ mov(1, G3);
|
|
__ ret(); // Result in G5 is 'true'
|
|
__ delayed()->restore(); // free copy or add can go here
|
|
|
|
__ bind(miss);
|
|
__ mov(0, G3);
|
|
__ ret(); // Result in G5 is 'false'
|
|
__ delayed()->restore(); // free copy or add can go here
|
|
}
|
|
|
|
case monitorenter_nofpu_id:
|
|
case monitorenter_id:
|
|
{ // G4: object
|
|
// G5: lock address
|
|
__ set_info("monitorenter", dont_gc_arguments);
|
|
|
|
int save_fpu_registers = (id == monitorenter_id);
|
|
// make a frame and preserve the caller's caller-save registers
|
|
OopMap* oop_map = save_live_registers(sasm, save_fpu_registers);
|
|
|
|
int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorenter), G4, G5);
|
|
|
|
oop_maps = new OopMapSet();
|
|
oop_maps->add_gc_map(call_offset, oop_map);
|
|
restore_live_registers(sasm, save_fpu_registers);
|
|
|
|
__ ret();
|
|
__ delayed()->restore();
|
|
}
|
|
break;
|
|
|
|
case monitorexit_nofpu_id:
|
|
case monitorexit_id:
|
|
{ // G4: 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)
|
|
__ set_info("monitorexit", dont_gc_arguments);
|
|
|
|
int save_fpu_registers = (id == monitorexit_id);
|
|
// make a frame and preserve the caller's caller-save registers
|
|
OopMap* oop_map = save_live_registers(sasm, save_fpu_registers);
|
|
|
|
int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorexit), G4);
|
|
|
|
oop_maps = new OopMapSet();
|
|
oop_maps->add_gc_map(call_offset, oop_map);
|
|
restore_live_registers(sasm, save_fpu_registers);
|
|
|
|
__ ret();
|
|
__ delayed()->restore();
|
|
}
|
|
break;
|
|
|
|
case deoptimize_id:
|
|
{
|
|
__ set_info("deoptimize", dont_gc_arguments);
|
|
OopMap* oop_map = save_live_registers(sasm);
|
|
int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, deoptimize), G4);
|
|
oop_maps = new OopMapSet();
|
|
oop_maps->add_gc_map(call_offset, oop_map);
|
|
restore_live_registers(sasm);
|
|
DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob();
|
|
assert(deopt_blob != NULL, "deoptimization blob must have been created");
|
|
AddressLiteral dest(deopt_blob->unpack_with_reexecution());
|
|
__ jump_to(dest, O0);
|
|
__ delayed()->restore();
|
|
}
|
|
break;
|
|
|
|
case access_field_patching_id:
|
|
{ __ set_info("access_field_patching", dont_gc_arguments);
|
|
oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, access_field_patching));
|
|
}
|
|
break;
|
|
|
|
case load_klass_patching_id:
|
|
{ __ set_info("load_klass_patching", dont_gc_arguments);
|
|
oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_klass_patching));
|
|
}
|
|
break;
|
|
|
|
case load_mirror_patching_id:
|
|
{ __ set_info("load_mirror_patching", dont_gc_arguments);
|
|
oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_mirror_patching));
|
|
}
|
|
break;
|
|
|
|
case load_appendix_patching_id:
|
|
{ __ set_info("load_appendix_patching", dont_gc_arguments);
|
|
oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_appendix_patching));
|
|
}
|
|
break;
|
|
|
|
case dtrace_object_alloc_id:
|
|
{ // O0: object
|
|
__ set_info("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);
|
|
|
|
__ save_thread(L7_thread_cache);
|
|
__ call(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc),
|
|
relocInfo::runtime_call_type);
|
|
__ delayed()->mov(I0, O0);
|
|
__ restore_thread(L7_thread_cache);
|
|
|
|
restore_live_registers(sasm);
|
|
__ ret();
|
|
__ delayed()->restore();
|
|
}
|
|
break;
|
|
|
|
case predicate_failed_trap_id:
|
|
{
|
|
__ set_info("predicate_failed_trap", dont_gc_arguments);
|
|
OopMap* oop_map = save_live_registers(sasm);
|
|
|
|
int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, predicate_failed_trap));
|
|
|
|
oop_maps = new OopMapSet();
|
|
oop_maps->add_gc_map(call_offset, oop_map);
|
|
|
|
DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob();
|
|
assert(deopt_blob != NULL, "deoptimization blob must have been created");
|
|
restore_live_registers(sasm);
|
|
|
|
AddressLiteral dest(deopt_blob->unpack_with_reexecution());
|
|
__ jump_to(dest, O0);
|
|
__ delayed()->restore();
|
|
}
|
|
break;
|
|
|
|
default:
|
|
{ __ set_info("unimplemented entry", dont_gc_arguments);
|
|
__ save_frame(0);
|
|
__ set((int)id, O1);
|
|
__ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), O1);
|
|
__ should_not_reach_here();
|
|
}
|
|
break;
|
|
}
|
|
return oop_maps;
|
|
}
|
|
|
|
|
|
OopMapSet* Runtime1::generate_handle_exception(StubID id, StubAssembler* sasm) {
|
|
__ block_comment("generate_handle_exception");
|
|
|
|
// Save registers, if required.
|
|
OopMapSet* oop_maps = new OopMapSet();
|
|
OopMap* oop_map = 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.
|
|
oop_map = generate_oop_map(sasm, true);
|
|
|
|
// transfer the pending exception to the exception_oop
|
|
__ ld_ptr(G2_thread, in_bytes(JavaThread::pending_exception_offset()), Oexception);
|
|
__ ld_ptr(Oexception, 0, G0);
|
|
__ st_ptr(G0, G2_thread, in_bytes(JavaThread::pending_exception_offset()));
|
|
__ add(I7, frame::pc_return_offset, Oissuing_pc);
|
|
break;
|
|
case handle_exception_id:
|
|
// At this point all registers MAY be live.
|
|
oop_map = save_live_registers(sasm);
|
|
__ mov(Oexception->after_save(), Oexception);
|
|
__ mov(Oissuing_pc->after_save(), Oissuing_pc);
|
|
break;
|
|
case handle_exception_from_callee_id:
|
|
// At this point all registers except exception oop (Oexception)
|
|
// and exception pc (Oissuing_pc) are dead.
|
|
oop_map = new OopMap(frame_size_in_bytes / sizeof(jint), 0);
|
|
sasm->set_frame_size(frame_size_in_bytes / BytesPerWord);
|
|
__ save_frame_c1(frame_size_in_bytes);
|
|
__ mov(Oexception->after_save(), Oexception);
|
|
__ mov(Oissuing_pc->after_save(), Oissuing_pc);
|
|
break;
|
|
default: ShouldNotReachHere();
|
|
}
|
|
|
|
__ verify_not_null_oop(Oexception);
|
|
|
|
#ifdef ASSERT
|
|
// check that fields in JavaThread for exception oop and issuing pc are
|
|
// empty before writing to them
|
|
Label oop_empty;
|
|
Register scratch = I7; // We can use I7 here because it's overwritten later anyway.
|
|
__ ld_ptr(Address(G2_thread, JavaThread::exception_oop_offset()), scratch);
|
|
__ br_null(scratch, false, Assembler::pt, oop_empty);
|
|
__ delayed()->nop();
|
|
__ stop("exception oop already set");
|
|
__ bind(oop_empty);
|
|
|
|
Label pc_empty;
|
|
__ ld_ptr(Address(G2_thread, JavaThread::exception_pc_offset()), scratch);
|
|
__ br_null(scratch, false, Assembler::pt, pc_empty);
|
|
__ delayed()->nop();
|
|
__ stop("exception pc already set");
|
|
__ bind(pc_empty);
|
|
#endif
|
|
|
|
// save the exception and issuing pc in the thread
|
|
__ st_ptr(Oexception, G2_thread, in_bytes(JavaThread::exception_oop_offset()));
|
|
__ st_ptr(Oissuing_pc, G2_thread, in_bytes(JavaThread::exception_pc_offset()));
|
|
|
|
// use the throwing pc as the return address to lookup (has bci & oop map)
|
|
__ mov(Oissuing_pc, I7);
|
|
__ sub(I7, frame::pc_return_offset, I7);
|
|
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);
|
|
|
|
// Note: if nmethod has been deoptimized then regardless of
|
|
// whether it had a handler or not we will deoptimize
|
|
// by entering the deopt blob with a pending exception.
|
|
|
|
// Restore the registers that were saved at the beginning, remove
|
|
// the frame and jump to the exception handler.
|
|
switch (id) {
|
|
case forward_exception_id:
|
|
case handle_exception_id:
|
|
restore_live_registers(sasm);
|
|
__ jmp(O0, 0);
|
|
__ delayed()->restore();
|
|
break;
|
|
case handle_exception_from_callee_id:
|
|
// Restore SP from L7 if the exception PC is a method handle call site.
|
|
__ mov(O0, G5); // Save the target address.
|
|
__ lduw(Address(G2_thread, JavaThread::is_method_handle_return_offset()), L0);
|
|
__ tst(L0); // Condition codes are preserved over the restore.
|
|
__ restore();
|
|
|
|
__ jmp(G5, 0); // jump to the exception handler
|
|
__ delayed()->movcc(Assembler::notZero, false, Assembler::icc, L7_mh_SP_save, SP); // Restore SP if required.
|
|
break;
|
|
default: ShouldNotReachHere();
|
|
}
|
|
|
|
return oop_maps;
|
|
}
|
|
|
|
|
|
#undef __
|
|
|
|
const char *Runtime1::pd_name_for_address(address entry) {
|
|
return "<unknown function>";
|
|
}
|