1 /* 2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2018, SAP SE. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #ifndef CPU_S390_GC_G1_G1BARRIERSETASSEMBLER_S390_HPP 27 #define CPU_S390_GC_G1_G1BARRIERSETASSEMBLER_S390_HPP 28 29 #include "asm/macroAssembler.hpp" 30 #include "gc/shared/modRefBarrierSetAssembler.hpp" 31 32 class LIR_Assembler; 33 class StubAssembler; 34 class G1PreBarrierStub; 35 class G1PostBarrierStub; 36 37 class G1BarrierSetAssembler: public ModRefBarrierSetAssembler { 38 protected: 39 virtual void gen_write_ref_array_pre_barrier(MacroAssembler* masm, DecoratorSet decorators, Register addr, Register count); 40 virtual void gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators, Register addr, Register count, 41 bool do_return); 42 43 void g1_write_barrier_pre(MacroAssembler* masm, DecoratorSet decorators, 44 const Address* obj, // Address of oop or NULL if pre-loaded. 45 Register Rpre_val, // Ideally, this is a non-volatile register. 46 Register Rval, // Will be preserved. 47 Register Rtmp1, // If Rpre_val is volatile, either Rtmp1 48 Register Rtmp2, // or Rtmp2 has to be non-volatile. 49 bool pre_val_needed); // Save Rpre_val across runtime call, caller uses it. 50 51 void g1_write_barrier_post(MacroAssembler* masm, DecoratorSet decorators, Register Rstore_addr, Register Rnew_val, 52 Register Rtmp1, Register Rtmp2, Register Rtmp3); 53 54 virtual void oop_store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type, 55 const Address& dst, Register val, Register tmp1, Register tmp2, Register tmp3); 56 57 public: 58 void gen_g1_pre_barrier_stub(LIR_Assembler* ce, G1PreBarrierStub* stub); 59 void gen_g1_post_barrier_stub(LIR_Assembler* ce, G1PostBarrierStub* stub); 60 61 void generate_c1_pre_barrier_runtime_stub(StubAssembler* sasm); 62 void generate_c1_post_barrier_runtime_stub(StubAssembler* sasm); 63 64 virtual void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type, 65 const Address& src, Register dst, Register tmp1, Register tmp2, Label *is_null = NULL); 66 67 virtual void resolve_jobject(MacroAssembler* masm, Register value, Register tmp1, Register tmp2); 68 }; 69 70 #endif // CPU_S390_GC_G1_G1BARRIERSETASSEMBLER_S390_HPP