--- old/src/hotspot/cpu/sparc/c1_Runtime1_sparc.cpp 2020-05-01 02:28:40.995217058 -0700 +++ /dev/null 2020-03-09 18:57:19.455001459 -0700 @@ -1,917 +0,0 @@ -/* - * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved. - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This code is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 only, as - * published by the Free Software Foundation. - * - * This code is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * version 2 for more details (a copy is included in the LICENSE file that - * accompanied this code). - * - * You should have received a copy of the GNU General Public License version - * 2 along with this work; if not, write to the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA - * or visit www.oracle.com if you need additional information or have any - * questions. - * - */ - -#include "precompiled.hpp" -#include "asm/macroAssembler.inline.hpp" -#include "c1/c1_Defs.hpp" -#include "c1/c1_MacroAssembler.hpp" -#include "c1/c1_Runtime1.hpp" -#include "ci/ciUtilities.hpp" -#include "gc/shared/cardTable.hpp" -#include "gc/shared/cardTableBarrierSet.hpp" -#include "interpreter/interpreter.hpp" -#include "memory/universe.hpp" -#include "nativeInst_sparc.hpp" -#include "oops/compiledICHolder.hpp" -#include "oops/oop.inline.hpp" -#include "prims/jvmtiExport.hpp" -#include "runtime/sharedRuntime.hpp" -#include "runtime/signature.hpp" -#include "runtime/vframeArray.hpp" -#include "utilities/macros.hpp" -#include "utilities/align.hpp" -#include "vmreg_sparc.inline.hpp" - -// Implementation of StubAssembler - -int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry_point, int number_of_arguments) { - // for sparc changing the number of arguments doesn't change - // anything about the frame size so we'll always lie and claim that - // we are only passing 1 argument. - set_num_rt_args(1); - - assert_not_delayed(); - // bang stack before going to runtime - set(-os::vm_page_size() + STACK_BIAS, G3_scratch); - st(G0, SP, G3_scratch); - - // debugging support - assert(number_of_arguments >= 0 , "cannot have negative number of arguments"); - - set_last_Java_frame(SP, noreg); - if (VerifyThread) mov(G2_thread, O0); // about to be smashed; pass early - save_thread(L7_thread_cache); - // do the call - call(entry_point, relocInfo::runtime_call_type); - if (!VerifyThread) { - delayed()->mov(G2_thread, O0); // pass thread as first argument - } else { - delayed()->nop(); // (thread already passed) - } - int call_offset = offset(); // offset of return address - restore_thread(L7_thread_cache); - reset_last_Java_frame(); - - // check for pending exceptions - { Label L; - Address exception_addr(G2_thread, Thread::pending_exception_offset()); - ld_ptr(exception_addr, Gtemp); - br_null_short(Gtemp, pt, L); - Address vm_result_addr(G2_thread, JavaThread::vm_result_offset()); - st_ptr(G0, vm_result_addr); - Address vm_result_addr_2(G2_thread, JavaThread::vm_result_2_offset()); - st_ptr(G0, vm_result_addr_2); - - if (frame_size() == no_frame_size) { - // we use O7 linkage so that forward_exception_entry has the issuing PC - call(StubRoutines::forward_exception_entry(), relocInfo::runtime_call_type); - delayed()->restore(); - } else if (_stub_id == Runtime1::forward_exception_id) { - should_not_reach_here(); - } else { - AddressLiteral exc(Runtime1::entry_for(Runtime1::forward_exception_id)); - jump_to(exc, G4); - delayed()->nop(); - } - bind(L); - } - - // get oop result if there is one and reset the value in the thread - if (oop_result1->is_valid()) { // get oop result if there is one and reset it in the thread - get_vm_result (oop_result1); - } else { - // be a little paranoid and clear the result - Address vm_result_addr(G2_thread, JavaThread::vm_result_offset()); - st_ptr(G0, vm_result_addr); - } - - // get second result if there is one and reset the value in the thread - if (metadata_result->is_valid()) { - get_vm_result_2 (metadata_result); - } else { - // be a little paranoid and clear the result - Address vm_result_addr_2(G2_thread, JavaThread::vm_result_2_offset()); - st_ptr(G0, vm_result_addr_2); - } - - return call_offset; -} - - -int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1) { - // O0 is reserved for the thread - mov(arg1, O1); - return call_RT(oop_result1, metadata_result, entry, 1); -} - - -int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1, Register arg2) { - // O0 is reserved for the thread - mov(arg1, O1); - mov(arg2, O2); assert(arg2 != O1, "smashed argument"); - return call_RT(oop_result1, metadata_result, entry, 2); -} - - -int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1, Register arg2, Register arg3) { - // O0 is reserved for the thread - mov(arg1, O1); - mov(arg2, O2); assert(arg2 != O1, "smashed argument"); - mov(arg3, O3); assert(arg3 != O1 && arg3 != O2, "smashed argument"); - return call_RT(oop_result1, metadata_result, entry, 3); -} - -void StubAssembler::prologue(const char* name, bool must_gc_arguments) { - set_info(name, must_gc_arguments); -} - -void StubAssembler::epilogue() { - delayed()->restore(); -} - -// Implementation of Runtime1 - - -static int cpu_reg_save_offsets[FrameMap::nof_cpu_regs]; -static int fpu_reg_save_offsets[FrameMap::nof_fpu_regs]; -static int reg_save_size_in_words; -static int frame_size_in_bytes = -1; - -static OopMap* generate_oop_map(StubAssembler* sasm, bool save_fpu_registers) { - assert(frame_size_in_bytes == sasm->total_frame_size_in_bytes(reg_save_size_in_words), - "mismatch in calculation"); - sasm->set_frame_size(frame_size_in_bytes / BytesPerWord); - int frame_size_in_slots = frame_size_in_bytes / sizeof(jint); - OopMap* oop_map = new OopMap(frame_size_in_slots, 0); - - int i; - for (i = 0; i < FrameMap::nof_cpu_regs; i++) { - Register r = as_Register(i); - if (r == G1 || r == G3 || r == G4 || r == G5) { - int sp_offset = cpu_reg_save_offsets[i]; - oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset), - r->as_VMReg()); - } - } - - if (save_fpu_registers) { - for (i = 0; i < FrameMap::nof_fpu_regs; i++) { - FloatRegister r = as_FloatRegister(i); - int sp_offset = fpu_reg_save_offsets[i]; - oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset), - r->as_VMReg()); - } - } - return oop_map; -} - -#define __ this-> - -void C1_MacroAssembler::save_live_registers_no_oop_map(bool save_fpu_registers) { - assert(frame_size_in_bytes == __ total_frame_size_in_bytes(reg_save_size_in_words), - "mismatch in calculation"); - __ save_frame_c1(frame_size_in_bytes); - - // Record volatile registers as callee-save values in an OopMap so their save locations will be - // propagated to the caller frame's RegisterMap during StackFrameStream construction (needed for - // deoptimization; see compiledVFrame::create_stack_value). The caller's I, L and O registers - // are saved in register windows - I's and L's in the caller's frame and O's in the stub frame - // (as the stub's I's) when the runtime routine called by the stub creates its frame. - // OopMap frame sizes are in c2 stack slot sizes (sizeof(jint)) - - int i; - for (i = 0; i < FrameMap::nof_cpu_regs; i++) { - Register r = as_Register(i); - if (r == G1 || r == G3 || r == G4 || r == G5) { - int sp_offset = cpu_reg_save_offsets[i]; - __ st_ptr(r, SP, (sp_offset * BytesPerWord) + STACK_BIAS); - } - } - - if (save_fpu_registers) { - for (i = 0; i < FrameMap::nof_fpu_regs; i++) { - FloatRegister r = as_FloatRegister(i); - int sp_offset = fpu_reg_save_offsets[i]; - __ stf(FloatRegisterImpl::S, r, SP, (sp_offset * BytesPerWord) + STACK_BIAS); - } - } -} - -void C1_MacroAssembler::restore_live_registers(bool restore_fpu_registers) { - for (int i = 0; i < FrameMap::nof_cpu_regs; i++) { - Register r = as_Register(i); - if (r == G1 || r == G3 || r == G4 || r == G5) { - __ ld_ptr(SP, (cpu_reg_save_offsets[i] * BytesPerWord) + STACK_BIAS, r); - } - } - - if (restore_fpu_registers) { - for (int i = 0; i < FrameMap::nof_fpu_regs; i++) { - FloatRegister r = as_FloatRegister(i); - __ ldf(FloatRegisterImpl::S, SP, (fpu_reg_save_offsets[i] * BytesPerWord) + STACK_BIAS, r); - } - } -} - -#undef __ -#define __ sasm-> - -static OopMap* save_live_registers(StubAssembler* sasm, bool save_fpu_registers = true) { - __ save_live_registers_no_oop_map(save_fpu_registers); - return generate_oop_map(sasm, save_fpu_registers); -} - -static void restore_live_registers(StubAssembler* sasm, bool restore_fpu_registers = true) { - __ restore_live_registers(restore_fpu_registers); -} - - -void Runtime1::initialize_pd() { - // compute word offsets from SP at which live (non-windowed) registers are captured by stub routines - // - // A stub routine will have a frame that is at least large enough to hold - // a register window save area (obviously) and the volatile g registers - // and floating registers. A user of save_live_registers can have a frame - // that has more scratch area in it (although typically they will use L-regs). - // in that case the frame will look like this (stack growing down) - // - // FP -> | | - // | scratch mem | - // | " " | - // -------------- - // | float regs | - // | " " | - // --------------- - // | G regs | - // | " " | - // --------------- - // | abi reg. | - // | window save | - // | area | - // SP -> --------------- - // - int i; - int sp_offset = align_up((int)frame::register_save_words, 2); // start doubleword aligned - - // only G int registers are saved explicitly; others are found in register windows - for (i = 0; i < FrameMap::nof_cpu_regs; i++) { - Register r = as_Register(i); - if (r == G1 || r == G3 || r == G4 || r == G5) { - cpu_reg_save_offsets[i] = sp_offset; - sp_offset++; - } - } - - // all float registers are saved explicitly - assert(FrameMap::nof_fpu_regs == 32, "double registers not handled here"); - for (i = 0; i < FrameMap::nof_fpu_regs; i++) { - fpu_reg_save_offsets[i] = sp_offset; - sp_offset++; - } - reg_save_size_in_words = sp_offset - frame::memory_parameter_word_sp_offset; - // this should match assembler::total_frame_size_in_bytes, which - // isn't callable from this context. It's checked by an assert when - // it's used though. - frame_size_in_bytes = align_up(sp_offset * wordSize, 8); -} - - -OopMapSet* Runtime1::generate_exception_throw(StubAssembler* sasm, address target, bool has_argument) { - // make a frame and preserve the caller's caller-save registers - OopMap* oop_map = save_live_registers(sasm); - int call_offset; - if (!has_argument) { - call_offset = __ call_RT(noreg, noreg, target); - } else { - call_offset = __ call_RT(noreg, noreg, target, G4, G5); - } - OopMapSet* oop_maps = new OopMapSet(); - oop_maps->add_gc_map(call_offset, oop_map); - - __ should_not_reach_here(); - return oop_maps; -} - - -OopMapSet* Runtime1::generate_stub_call(StubAssembler* sasm, Register result, address target, - Register arg1, Register arg2, Register arg3) { - // make a frame and preserve the caller's caller-save registers - OopMap* oop_map = save_live_registers(sasm); - - int call_offset; - if (arg1 == noreg) { - call_offset = __ call_RT(result, noreg, target); - } else if (arg2 == noreg) { - call_offset = __ call_RT(result, noreg, target, arg1); - } else if (arg3 == noreg) { - call_offset = __ call_RT(result, noreg, target, arg1, arg2); - } else { - call_offset = __ call_RT(result, noreg, target, arg1, arg2, arg3); - } - OopMapSet* oop_maps = NULL; - - oop_maps = new OopMapSet(); - oop_maps->add_gc_map(call_offset, oop_map); - restore_live_registers(sasm); - - __ ret(); - __ delayed()->restore(); - - return oop_maps; -} - - -OopMapSet* Runtime1::generate_patching(StubAssembler* sasm, address target) { - // make a frame and preserve the caller's caller-save registers - OopMap* oop_map = save_live_registers(sasm); - - // call the runtime patching routine, returns non-zero if nmethod got deopted. - int call_offset = __ call_RT(noreg, noreg, target); - OopMapSet* oop_maps = new OopMapSet(); - oop_maps->add_gc_map(call_offset, oop_map); - - // re-execute the patched instruction or, if the nmethod was deoptmized, return to the - // deoptimization handler entry that will cause re-execution of the current bytecode - DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob(); - assert(deopt_blob != NULL, "deoptimization blob must have been created"); - - Label no_deopt; - __ br_null_short(O0, Assembler::pt, no_deopt); - - // return to the deoptimization handler entry for unpacking and rexecute - // if we simply returned the we'd deopt as if any call we patched had just - // returned. - - restore_live_registers(sasm); - - AddressLiteral dest(deopt_blob->unpack_with_reexecution()); - __ jump_to(dest, O0); - __ delayed()->restore(); - - __ bind(no_deopt); - restore_live_registers(sasm); - __ ret(); - __ delayed()->restore(); - - return oop_maps; -} - -OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) { - - OopMapSet* oop_maps = NULL; - // for better readability - const bool must_gc_arguments = true; - const bool dont_gc_arguments = false; - - // stub code & info for the different stubs - switch (id) { - case forward_exception_id: - { - oop_maps = generate_handle_exception(id, sasm); - } - break; - - case new_instance_id: - case fast_new_instance_id: - case fast_new_instance_init_check_id: - { - Register G5_klass = G5; // Incoming - Register O0_obj = O0; // Outgoing - - 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 TLAB is disabled, see if there is support for inlining contiguous - // allocations. - // Otherwise, just go to the slow path. - if ((id == fast_new_instance_id || id == fast_new_instance_init_check_id) && - !UseTLAB && Universe::heap()->supports_inline_contig_alloc()) { - Label slow_path; - Register G1_obj_size = G1; - Register G3_t1 = G3; - Register G4_t2 = G4; - assert_different_registers(G5_klass, G1_obj_size, G3_t1, G4_t2); - - // Push a frame since we may do dtrace notification for the - // allocation which requires calling out and we don't want - // to stomp the real return address. - __ save_frame(0); - - if (id == fast_new_instance_init_check_id) { - // make sure the klass is initialized - __ ldub(G5_klass, in_bytes(InstanceKlass::init_state_offset()), G3_t1); - __ cmp(G3_t1, InstanceKlass::fully_initialized); - __ br(Assembler::notEqual, false, Assembler::pn, slow_path); - __ delayed()->nop(); - } -#ifdef ASSERT - // assert object can be fast path allocated - { - Label ok, not_ok; - __ ld(G5_klass, in_bytes(Klass::layout_helper_offset()), G1_obj_size); - // make sure it's an instance (LH > 0) - __ cmp_and_br_short(G1_obj_size, 0, Assembler::lessEqual, Assembler::pn, not_ok); - __ btst(Klass::_lh_instance_slow_path_bit, G1_obj_size); - __ br(Assembler::zero, false, Assembler::pn, ok); - __ delayed()->nop(); - __ 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 allocating directly from eden. - // get the instance size - __ 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 ""; -}