| /* |
| * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2012, 2018 SAP SE. 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 "nativeInst_ppc.hpp" |
| #include "oops/compiledICHolder.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "prims/jvmtiExport.hpp" |
| #include "register_ppc.hpp" |
| #include "runtime/sharedRuntime.hpp" |
| #include "runtime/signature.hpp" |
| #include "runtime/vframeArray.hpp" |
| #include "utilities/align.hpp" |
| #include "utilities/macros.hpp" |
| #include "vmreg_ppc.inline.hpp" |
| |
| // Implementation of StubAssembler |
| |
| int StubAssembler::call_RT(Register oop_result1, Register metadata_result, |
| address entry_point, int number_of_arguments) { |
| set_num_rt_args(0); // Nothing on stack |
| assert(!(oop_result1->is_valid() || metadata_result->is_valid()) || |
| oop_result1 != metadata_result, "registers must be different"); |
| |
| // Currently no stack banging. We assume that there are enough |
| // StackShadowPages (which have been banged in generate_stack_overflow_check) |
| // for the stub frame and the runtime frames. |
| |
| set_last_Java_frame(R1_SP, noreg); |
| |
| // ARG1 must hold thread address. |
| mr(R3_ARG1, R16_thread); |
| |
| address return_pc = call_c_with_frame_resize(entry_point, /*No resize, we have a C compatible frame.*/0); |
| |
| reset_last_Java_frame(); |
| |
| // Check for pending exceptions. |
| { |
| ld(R0, in_bytes(Thread::pending_exception_offset()), R16_thread); |
| cmpdi(CCR0, R0, 0); |
| |
| // This used to conditionally jump to forward_exception however it is |
| // possible if we relocate that the branch will not reach. So we must jump |
| // around so we can always reach. |
| |
| Label ok; |
| beq(CCR0, ok); |
| |
| // Make sure that the vm_results are cleared. |
| if (oop_result1->is_valid() || metadata_result->is_valid()) { |
| li(R0, 0); |
| if (oop_result1->is_valid()) { |
| std(R0, in_bytes(JavaThread::vm_result_offset()), R16_thread); |
| } |
| if (metadata_result->is_valid()) { |
| std(R0, in_bytes(JavaThread::vm_result_2_offset()), R16_thread); |
| } |
| } |
| |
| if (frame_size() == no_frame_size) { |
| ShouldNotReachHere(); // We always have a frame size. |
| //pop_frame(); // pop the stub frame |
| //ld(R0, _abi(lr), R1_SP); |
| //mtlr(R0); |
| //load_const_optimized(R0, StubRoutines::forward_exception_entry()); |
| //mtctr(R0); |
| //bctr(); |
| } else if (_stub_id == Runtime1::forward_exception_id) { |
| should_not_reach_here(); |
| } else { |
| // keep stub frame for next call_RT |
| //load_const_optimized(R0, Runtime1::entry_for(Runtime1::forward_exception_id)); |
| add_const_optimized(R0, R29_TOC, MacroAssembler::offset_to_global_toc(Runtime1::entry_for(Runtime1::forward_exception_id))); |
| mtctr(R0); |
| bctr(); |
| } |
| |
| bind(ok); |
| } |
| |
| // Get oop results if there are any and reset the values in the thread. |
| if (oop_result1->is_valid()) { |
| get_vm_result(oop_result1); |
| } |
| if (metadata_result->is_valid()) { |
| get_vm_result_2(metadata_result); |
| } |
| |
| return (int)(return_pc - code_section()->start()); |
| } |
| |
| |
| int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1) { |
| mr_if_needed(R4_ARG2, arg1); |
| 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) { |
| mr_if_needed(R4_ARG2, arg1); |
| mr_if_needed(R5_ARG3, arg2); assert(arg2 != R4_ARG2, "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) { |
| mr_if_needed(R4_ARG2, arg1); |
| mr_if_needed(R5_ARG3, arg2); assert(arg2 != R4_ARG2, "smashed argument"); |
| mr_if_needed(R6_ARG4, arg3); assert(arg3 != R4_ARG2 && arg3 != R5_ARG3, "smashed argument"); |
| return call_RT(oop_result1, metadata_result, entry, 3); |
| } |
| |
| |
| // Implementation of Runtime1 |
| |
| #define __ sasm-> |
| |
| static int cpu_reg_save_offsets[FrameMap::nof_cpu_regs]; |
| static int fpu_reg_save_offsets[FrameMap::nof_fpu_regs]; |
| static int frame_size_in_bytes = -1; |
| |
| static OopMap* generate_oop_map(StubAssembler* sasm, bool save_fpu_registers) { |
| assert(frame_size_in_bytes > frame::abi_reg_args_size, "init"); |
| 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 (FrameMap::reg_needs_save(r)) { |
| int sp_offset = cpu_reg_save_offsets[i]; |
| oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset>>2), r->as_VMReg()); |
| oop_map->set_callee_saved(VMRegImpl::stack2reg((sp_offset>>2) + 1), r->as_VMReg()->next()); |
| } |
| } |
| |
| 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>>2), r->as_VMReg()); |
| oop_map->set_callee_saved(VMRegImpl::stack2reg((sp_offset>>2) + 1), r->as_VMReg()->next()); |
| } |
| } |
| |
| return oop_map; |
| } |
| |
| static OopMap* save_live_registers(StubAssembler* sasm, bool save_fpu_registers = true, |
| Register ret_pc = noreg, int stack_preserve = 0) { |
| if (ret_pc == noreg) { |
| ret_pc = R0; |
| __ mflr(ret_pc); |
| } |
| __ std(ret_pc, _abi(lr), R1_SP); // C code needs pc in C1 method. |
| __ push_frame(frame_size_in_bytes + stack_preserve, R0); |
| |
| // 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). |
| // 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 (FrameMap::reg_needs_save(r)) { |
| int sp_offset = cpu_reg_save_offsets[i]; |
| __ std(r, sp_offset + STACK_BIAS, R1_SP); |
| } |
| } |
| |
| 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]; |
| __ stfd(r, sp_offset + STACK_BIAS, R1_SP); |
| } |
| } |
| |
| return generate_oop_map(sasm, save_fpu_registers); |
| } |
| |
| static void restore_live_registers(StubAssembler* sasm, Register result1, Register result2, |
| bool restore_fpu_registers = true) { |
| for (int i = 0; i < FrameMap::nof_cpu_regs; i++) { |
| Register r = as_Register(i); |
| if (FrameMap::reg_needs_save(r) && r != result1 && r != result2) { |
| int sp_offset = cpu_reg_save_offsets[i]; |
| __ ld(r, sp_offset + STACK_BIAS, R1_SP); |
| } |
| } |
| |
| if (restore_fpu_registers) { |
| for (int i = 0; i < FrameMap::nof_fpu_regs; i++) { |
| FloatRegister r = as_FloatRegister(i); |
| int sp_offset = fpu_reg_save_offsets[i]; |
| __ lfd(r, sp_offset + STACK_BIAS, R1_SP); |
| } |
| } |
| |
| __ pop_frame(); |
| __ ld(R0, _abi(lr), R1_SP); |
| __ mtlr(R0); |
| } |
| |
| |
| void Runtime1::initialize_pd() { |
| int i; |
| int sp_offset = frame::abi_reg_args_size; |
| |
| for (i = 0; i < FrameMap::nof_cpu_regs; i++) { |
| Register r = as_Register(i); |
| if (FrameMap::reg_needs_save(r)) { |
| cpu_reg_save_offsets[i] = sp_offset; |
| sp_offset += BytesPerWord; |
| } |
| } |
| |
| for (i = 0; i < FrameMap::nof_fpu_regs; i++) { |
| fpu_reg_save_offsets[i] = sp_offset; |
| sp_offset += BytesPerWord; |
| } |
| frame_size_in_bytes = align_up(sp_offset, frame::alignment_in_bytes); |
| } |
| |
| |
| 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, R4_ARG2); |
| } |
| OopMapSet* oop_maps = new OopMapSet(); |
| oop_maps->add_gc_map(call_offset, oop_map); |
| |
| __ should_not_reach_here(); |
| return oop_maps; |
| } |
| |
| static OopMapSet* generate_exception_throw_with_stack_parms(StubAssembler* sasm, address target, |
| int stack_parms) { |
| // Make a frame and preserve the caller's caller-save registers. |
| const int parm_size_in_bytes = align_up(stack_parms << LogBytesPerWord, frame::alignment_in_bytes); |
| const int padding = parm_size_in_bytes - (stack_parms << LogBytesPerWord); |
| OopMap* oop_map = save_live_registers(sasm, true, noreg, parm_size_in_bytes); |
| |
| int call_offset = 0; |
| switch (stack_parms) { |
| case 3: |
| __ ld(R6_ARG4, frame_size_in_bytes + padding + 16, R1_SP); |
| case 2: |
| __ ld(R5_ARG3, frame_size_in_bytes + padding + 8, R1_SP); |
| case 1: |
| __ ld(R4_ARG2, frame_size_in_bytes + padding + 0, R1_SP); |
| case 0: |
| call_offset = __ call_RT(noreg, noreg, target); |
| break; |
| default: Unimplemented(); break; |
| } |
| 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 = new OopMapSet(); |
| oop_maps->add_gc_map(call_offset, oop_map); |
| |
| restore_live_registers(sasm, result, noreg); |
| __ blr(); |
| return oop_maps; |
| } |
| |
| static OopMapSet* stub_call_with_stack_parms(StubAssembler* sasm, Register result, address target, |
| int stack_parms, bool do_return = true) { |
| // Make a frame and preserve the caller's caller-save registers. |
| const int parm_size_in_bytes = align_up(stack_parms << LogBytesPerWord, frame::alignment_in_bytes); |
| const int padding = parm_size_in_bytes - (stack_parms << LogBytesPerWord); |
| OopMap* oop_map = save_live_registers(sasm, true, noreg, parm_size_in_bytes); |
| |
| int call_offset = 0; |
| switch (stack_parms) { |
| case 3: |
| __ ld(R6_ARG4, frame_size_in_bytes + padding + 16, R1_SP); |
| case 2: |
| __ ld(R5_ARG3, frame_size_in_bytes + padding + 8, R1_SP); |
| case 1: |
| __ ld(R4_ARG2, frame_size_in_bytes + padding + 0, R1_SP); |
| case 0: |
| call_offset = __ call_RT(result, noreg, target); |
| break; |
| default: Unimplemented(); break; |
| } |
| OopMapSet* oop_maps = new OopMapSet(); |
| oop_maps->add_gc_map(call_offset, oop_map); |
| |
| restore_live_registers(sasm, result, noreg); |
| if (do_return) __ blr(); |
| 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); |
| __ cmpdi(CCR0, R3_RET, 0); |
| |
| // 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"); |
| |
| // 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, noreg, noreg); |
| // Return if patching routine returned 0. |
| __ bclr(Assembler::bcondCRbiIs1, Assembler::bi0(CCR0, Assembler::equal), Assembler::bhintbhBCLRisReturn); |
| |
| address stub = deopt_blob->unpack_with_reexecution(); |
| //__ load_const_optimized(R0, stub); |
| __ add_const_optimized(R0, R29_TOC, MacroAssembler::offset_to_global_toc(stub)); |
| __ mtctr(R0); |
| __ bctr(); |
| |
| 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: |
| { |
| 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); |
| } |
| |
| // We don't support eden allocation. |
| |
| oop_maps = generate_stub_call(sasm, R3_RET, CAST_FROM_FN_PTR(address, new_instance), R4_ARG2); |
| } |
| break; |
| |
| case counter_overflow_id: |
| // Bci and method are on stack. |
| oop_maps = stub_call_with_stack_parms(sasm, noreg, CAST_FROM_FN_PTR(address, counter_overflow), 2); |
| break; |
| |
| case new_type_array_id: |
| case new_object_array_id: |
| { |
| 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. |
| { |
| int tag = (id == new_type_array_id) ? Klass::_lh_array_tag_type_value : Klass::_lh_array_tag_obj_value; |
| Label ok; |
| __ lwz(R0, in_bytes(Klass::layout_helper_offset()), R4_ARG2); |
| __ srawi(R0, R0, Klass::_lh_array_tag_shift); |
| __ cmpwi(CCR0, R0, tag); |
| __ beq(CCR0, ok); |
| __ stop("assert(is an array klass)"); |
| __ should_not_reach_here(); |
| __ bind(ok); |
| } |
| #endif // ASSERT |
| |
| // We don't support eden allocation. |
| |
| if (id == new_type_array_id) { |
| oop_maps = generate_stub_call(sasm, R3_RET, CAST_FROM_FN_PTR(address, new_type_array), R4_ARG2, R5_ARG3); |
| } else { |
| oop_maps = generate_stub_call(sasm, R3_RET, CAST_FROM_FN_PTR(address, new_object_array), R4_ARG2, R5_ARG3); |
| } |
| } |
| break; |
| |
| case new_multi_array_id: |
| { |
| // R4: klass |
| // R5: rank |
| // R6: address of 1st dimension |
| __ set_info("new_multi_array", dont_gc_arguments); |
| oop_maps = generate_stub_call(sasm, R3_RET, CAST_FROM_FN_PTR(address, new_multi_array), R4_ARG2, R5_ARG3, R6_ARG4); |
| } |
| break; |
| |
| case register_finalizer_id: |
| { |
| __ set_info("register_finalizer", dont_gc_arguments); |
| // This code is called via rt_call. Hence, caller-save registers have been saved. |
| Register t = R11_scratch1; |
| |
| // Load the klass and check the has finalizer flag. |
| __ load_klass(t, R3_ARG1); |
| __ lwz(t, in_bytes(Klass::access_flags_offset()), t); |
| __ testbitdi(CCR0, R0, t, exact_log2(JVM_ACC_HAS_FINALIZER)); |
| // Return if has_finalizer bit == 0 (CR0.eq). |
| __ bclr(Assembler::bcondCRbiIs1, Assembler::bi0(CCR0, Assembler::equal), Assembler::bhintbhBCLRisReturn); |
| |
| __ mflr(R0); |
| __ std(R0, _abi(lr), R1_SP); |
| __ push_frame(frame::abi_reg_args_size, R0); // Empty dummy frame (no callee-save regs). |
| sasm->set_frame_size(frame::abi_reg_args_size / BytesPerWord); |
| OopMap* oop_map = new OopMap(frame::abi_reg_args_size / sizeof(jint), 0); |
| int call_offset = __ call_RT(noreg, noreg, |
| CAST_FROM_FN_PTR(address, SharedRuntime::register_finalizer), R3_ARG1); |
| oop_maps = new OopMapSet(); |
| oop_maps->add_gc_map(call_offset, oop_map); |
| |
| __ pop_frame(); |
| __ ld(R0, _abi(lr), R1_SP); |
| __ mtlr(R0); |
| __ blr(); |
| } |
| break; |
| |
| case throw_range_check_failed_id: |
| { |
| __ set_info("range_check_failed", dont_gc_arguments); // Arguments will be discarded. |
| oop_maps = generate_exception_throw_with_stack_parms(sasm, CAST_FROM_FN_PTR(address, throw_range_check_exception), 2); |
| } |
| break; |
| |
| case throw_index_exception_id: |
| { |
| __ set_info("index_range_check_failed", dont_gc_arguments); // Arguments will be discarded. |
| 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_nofpu_id: |
| 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: |
| { |
| const Register Rexception = R3 /*LIRGenerator::exceptionOopOpr()*/, |
| Rexception_pc = R4 /*LIRGenerator::exceptionPcOpr()*/, |
| Rexception_save = R31, Rcaller_sp = R30; |
| __ set_info("unwind_exception", dont_gc_arguments); |
| |
| __ ld(Rcaller_sp, 0, R1_SP); |
| __ push_frame_reg_args(0, R0); // dummy frame for C call |
| __ mr(Rexception_save, Rexception); // save over C call |
| __ ld(Rexception_pc, _abi(lr), Rcaller_sp); // return pc |
| __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), R16_thread, Rexception_pc); |
| __ verify_not_null_oop(Rexception_save); |
| __ mtctr(R3_RET); |
| __ ld(Rexception_pc, _abi(lr), Rcaller_sp); // return pc |
| __ mr(R1_SP, Rcaller_sp); // Pop both frames at once. |
| __ mr(Rexception, Rexception_save); // restore |
| __ mtlr(Rexception_pc); |
| __ bctr(); |
| } |
| 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: |
| { |
| __ 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 ); |
| const Register sub_klass = R5, |
| super_klass = R4, |
| temp1_reg = R6, |
| temp2_reg = R0; |
| __ check_klass_subtype_slow_path(sub_klass, super_klass, temp1_reg, temp2_reg); // returns with CR0.eq if successful |
| __ crandc(CCR0, Assembler::equal, CCR0, Assembler::equal); // failed: CR0.ne |
| __ blr(); |
| } |
| break; |
| |
| case monitorenter_nofpu_id: |
| case monitorenter_id: |
| { |
| __ 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), R4_ARG2, R5_ARG3); |
| |
| oop_maps = new OopMapSet(); |
| oop_maps->add_gc_map(call_offset, oop_map); |
| |
| restore_live_registers(sasm, noreg, noreg, save_fpu_registers); |
| __ blr(); |
| } |
| break; |
| |
| case monitorexit_nofpu_id: |
| case monitorexit_id: |
| { |
| // 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), R4_ARG2); |
| |
| oop_maps = new OopMapSet(); |
| oop_maps->add_gc_map(call_offset, oop_map); |
| |
| restore_live_registers(sasm, noreg, noreg, save_fpu_registers); |
| __ blr(); |
| } |
| break; |
| |
| case deoptimize_id: |
| { |
| __ set_info("deoptimize", dont_gc_arguments); |
| __ std(R0, -8, R1_SP); // Pass trap_request on stack. |
| oop_maps = stub_call_with_stack_parms(sasm, noreg, CAST_FROM_FN_PTR(address, deoptimize), 1, /*do_return*/ false); |
| |
| DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob(); |
| assert(deopt_blob != NULL, "deoptimization blob must have been created"); |
| address stub = deopt_blob->unpack_with_reexecution(); |
| //__ load_const_optimized(R0, stub); |
| __ add_const_optimized(R0, R29_TOC, MacroAssembler::offset_to_global_toc(stub)); |
| __ mtctr(R0); |
| __ bctr(); |
| } |
| 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 |
| __ unimplemented("stub dtrace_object_alloc_id"); |
| __ 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, noreg, noreg); |
| |
| address stub = deopt_blob->unpack_with_reexecution(); |
| //__ load_const_optimized(R0, stub); |
| __ add_const_optimized(R0, R29_TOC, MacroAssembler::offset_to_global_toc(stub)); |
| __ mtctr(R0); |
| __ bctr(); |
| } |
| break; |
| |
| default: |
| { |
| __ set_info("unimplemented entry", dont_gc_arguments); |
| __ mflr(R0); |
| __ std(R0, _abi(lr), R1_SP); |
| __ push_frame(frame::abi_reg_args_size, R0); // empty dummy frame |
| sasm->set_frame_size(frame::abi_reg_args_size / BytesPerWord); |
| OopMap* oop_map = new OopMap(frame::abi_reg_args_size / sizeof(jint), 0); |
| |
| __ load_const_optimized(R4_ARG2, (int)id); |
| int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), R4_ARG2); |
| |
| oop_maps = new OopMapSet(); |
| oop_maps->add_gc_map(call_offset, oop_map); |
| __ 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; |
| const Register Rexception = R3 /*LIRGenerator::exceptionOopOpr()*/, |
| Rexception_pc = R4 /*LIRGenerator::exceptionPcOpr()*/; |
| |
| 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. |
| // Also load the PC which is typically at SP + frame_size_in_bytes + _abi(lr), |
| // but we support additional slots in the frame for parameter passing. |
| __ ld(Rexception_pc, 0, R1_SP); |
| __ ld(Rexception, in_bytes(JavaThread::pending_exception_offset()), R16_thread); |
| __ li(R0, 0); |
| __ ld(Rexception_pc, _abi(lr), Rexception_pc); |
| __ std(R0, in_bytes(JavaThread::pending_exception_offset()), R16_thread); |
| break; |
| case handle_exception_nofpu_id: |
| case handle_exception_id: |
| // At this point all registers MAY be live. |
| oop_map = save_live_registers(sasm, id != handle_exception_nofpu_id, Rexception_pc); |
| break; |
| case handle_exception_from_callee_id: |
| // At this point all registers except exception oop and exception pc are dead. |
| oop_map = new OopMap(frame_size_in_bytes / sizeof(jint), 0); |
| sasm->set_frame_size(frame_size_in_bytes / BytesPerWord); |
| __ std(Rexception_pc, _abi(lr), R1_SP); |
| __ push_frame(frame_size_in_bytes, R0); |
| break; |
| default: ShouldNotReachHere(); |
| } |
| |
| __ verify_not_null_oop(Rexception); |
| |
| #ifdef ASSERT |
| // Check that fields in JavaThread for exception oop and issuing pc are |
| // empty before writing to them. |
| __ ld(R0, in_bytes(JavaThread::exception_oop_offset()), R16_thread); |
| __ cmpdi(CCR0, R0, 0); |
| __ asm_assert_eq("exception oop already set", 0x963); |
| __ ld(R0, in_bytes(JavaThread::exception_pc_offset() ), R16_thread); |
| __ cmpdi(CCR0, R0, 0); |
| __ asm_assert_eq("exception pc already set", 0x962); |
| #endif |
| |
| // Save the exception and issuing pc in the thread. |
| __ std(Rexception, in_bytes(JavaThread::exception_oop_offset()), R16_thread); |
| __ std(Rexception_pc, in_bytes(JavaThread::exception_pc_offset() ), R16_thread); |
| |
| 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); |
| |
| __ mtctr(R3_RET); |
| |
| // 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_nofpu_id: |
| case handle_exception_id: |
| restore_live_registers(sasm, noreg, noreg, id != handle_exception_nofpu_id); |
| __ bctr(); |
| break; |
| case handle_exception_from_callee_id: { |
| __ pop_frame(); |
| __ ld(Rexception_pc, _abi(lr), R1_SP); |
| __ mtlr(Rexception_pc); |
| __ bctr(); |
| break; |
| } |
| default: ShouldNotReachHere(); |
| } |
| |
| return oop_maps; |
| } |
| |
| const char *Runtime1::pd_name_for_address(address entry) { |
| return "<unknown function>"; |
| } |
| |
| #undef __ |
