1 /* 2 * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 private: 26 27 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// 28 // 29 // Sparc load/store emission 30 // 31 // The sparc ld/st instructions cannot accomodate displacements > 13 bits long. 32 // The following "pseudo" sparc instructions (load/store) make it easier to use the indexed addressing mode 33 // by allowing 32 bit displacements: 34 // 35 // When disp <= 13 bits long, a single load or store instruction is emitted with (disp + [d]). 36 // When disp > 13 bits long, code is emitted to set the displacement into the O7 register, 37 // and then a load or store is emitted with ([O7] + [d]). 38 // 39 40 // some load/store variants return the code_offset for proper positioning of debug info for null checks 41 42 // load/store with 32 bit displacement 43 int load(Register s, int disp, Register d, BasicType ld_type, CodeEmitInfo* info = NULL); 44 void store(Register value, Register base, int offset, BasicType type, CodeEmitInfo *info = NULL); 45 46 // loadf/storef with 32 bit displacement 47 void load(Register s, int disp, FloatRegister d, BasicType ld_type, CodeEmitInfo* info = NULL); 48 void store(FloatRegister d, Register s1, int disp, BasicType st_type, CodeEmitInfo* info = NULL); 49 50 // convienence methods for calling load/store with an Address 51 void load(const Address& a, Register d, BasicType ld_type, CodeEmitInfo* info = NULL, int offset = 0); 52 void store(Register d, const Address& a, BasicType st_type, CodeEmitInfo* info = NULL, int offset = 0); 53 void load(const Address& a, FloatRegister d, BasicType ld_type, CodeEmitInfo* info = NULL, int offset = 0); 54 void store(FloatRegister d, const Address& a, BasicType st_type, CodeEmitInfo* info = NULL, int offset = 0); 55 56 // convienence methods for calling load/store with an LIR_Address 57 void load(LIR_Address* a, Register d, BasicType ld_type, CodeEmitInfo* info = NULL); 58 void store(Register d, LIR_Address* a, BasicType st_type, CodeEmitInfo* info = NULL); 59 void load(LIR_Address* a, FloatRegister d, BasicType ld_type, CodeEmitInfo* info = NULL); 60 void store(FloatRegister d, LIR_Address* a, BasicType st_type, CodeEmitInfo* info = NULL); 61 62 int store(LIR_Opr from_reg, Register base, int offset, BasicType type, bool unaligned = false); 63 int store(LIR_Opr from_reg, Register base, Register disp, BasicType type); 64 65 int load(Register base, int offset, LIR_Opr to_reg, BasicType type, bool unaligned = false); 66 int load(Register base, Register disp, LIR_Opr to_reg, BasicType type); 67 68 void monitorexit(LIR_Opr obj_opr, LIR_Opr lock_opr, Register hdr, int monitor_no); 69 70 int shift_amount(BasicType t); 71 72 static bool is_single_instruction(LIR_Op* op); 73 74 // Record the type of the receiver in ReceiverTypeData 75 void type_profile_helper(Register mdo, int mdo_offset_bias, 76 ciMethodData *md, ciProfileData *data, 77 Register recv, Register tmp1, Label* update_done); 78 // Setup pointers to MDO, MDO slot, also compute offset bias to access the slot. 79 void setup_md_access(ciMethod* method, int bci, 80 ciMethodData*& md, ciProfileData*& data, int& mdo_offset_bias); 81 public: 82 void pack64(LIR_Opr src, LIR_Opr dst); 83 void unpack64(LIR_Opr src, LIR_Opr dst); 84 85 enum { 86 #ifdef _LP64 87 call_stub_size = 68, 88 #else 89 call_stub_size = 20, 90 #endif // _LP64 91 exception_handler_size = DEBUG_ONLY(1*K) NOT_DEBUG(10*4), 92 deopt_handler_size = DEBUG_ONLY(1*K) NOT_DEBUG(10*4) };