Mercurial > hg > graal-compiler
annotate src/share/vm/c1/c1_FrameMap.hpp @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
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| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | a61af66fc99e |
| children | e9ff18c4ace7 |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 2000, 2006, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 class ciMethod; | |
| 26 class CallingConvention; | |
| 27 class BasicTypeArray; | |
| 28 class BasicTypeList; | |
| 29 | |
| 30 //-------------------------------------------------------- | |
| 31 // FrameMap | |
| 32 //-------------------------------------------------------- | |
| 33 | |
| 34 // This class is responsible of mapping items (locals, monitors, spill | |
| 35 // slots and registers to their frame location | |
| 36 // | |
| 37 // The monitors are specified by a consecutive index, although each monitor entry | |
| 38 // occupies two words. The monitor_index is 0.._num_monitors | |
| 39 // The spill index is similar to local index; it is in range 0..(open) | |
| 40 // | |
| 41 // The CPU registers are mapped using a fixed table; register with number 0 | |
| 42 // is the most used one. | |
| 43 | |
| 44 | |
| 45 // stack grow direction --> SP | |
| 46 // +----------+---+----------+-------+------------------------+-----+ | |
| 47 // |arguments | x | monitors | spill | reserved argument area | ABI | | |
| 48 // +----------+---+----------+-------+------------------------+-----+ | |
| 49 // | |
| 50 // x = ABI area (SPARC) or return adress and link (i486) | |
| 51 // ABI = ABI area (SPARC) or nothing (i486) | |
| 52 | |
| 53 | |
| 54 class LIR_OprDesc; | |
| 55 typedef LIR_OprDesc* LIR_Opr; | |
| 56 | |
| 57 | |
| 58 class FrameMap : public CompilationResourceObj { | |
| 59 public: | |
| 60 enum { | |
| 61 nof_cpu_regs = pd_nof_cpu_regs_frame_map, | |
| 62 nof_fpu_regs = pd_nof_fpu_regs_frame_map, | |
| 63 | |
| 64 nof_cpu_regs_reg_alloc = pd_nof_cpu_regs_reg_alloc, | |
| 65 nof_fpu_regs_reg_alloc = pd_nof_fpu_regs_reg_alloc, | |
| 66 | |
| 67 nof_caller_save_cpu_regs = pd_nof_caller_save_cpu_regs_frame_map, | |
| 68 nof_caller_save_fpu_regs = pd_nof_caller_save_fpu_regs_frame_map, | |
| 69 | |
| 70 spill_slot_size_in_bytes = 4 | |
| 71 }; | |
| 72 | |
| 73 # include "incls/_c1_FrameMap_pd.hpp.incl" // platform dependent declarations | |
| 74 | |
| 75 friend class LIR_OprDesc; | |
| 76 | |
| 77 private: | |
| 78 static bool _init_done; | |
| 79 static Register _cpu_rnr2reg [nof_cpu_regs]; | |
| 80 static int _cpu_reg2rnr [nof_cpu_regs]; | |
| 81 | |
| 82 static LIR_Opr _caller_save_cpu_regs [nof_caller_save_cpu_regs]; | |
| 83 static LIR_Opr _caller_save_fpu_regs [nof_caller_save_fpu_regs]; | |
| 84 | |
| 85 int _framesize; | |
| 86 int _argcount; | |
| 87 int _num_monitors; | |
| 88 int _num_spills; | |
| 89 int _reserved_argument_area_size; | |
| 90 int _oop_map_arg_count; | |
| 91 | |
| 92 CallingConvention* _incoming_arguments; | |
| 93 intArray* _argument_locations; | |
| 94 | |
| 95 void check_spill_index (int spill_index) const { assert(spill_index >= 0, "bad index"); } | |
| 96 void check_monitor_index (int monitor_index) const { assert(monitor_index >= 0 && | |
| 97 monitor_index < _num_monitors, "bad index"); } | |
| 98 | |
| 99 static Register cpu_rnr2reg (int rnr) { | |
| 100 assert(_init_done, "tables not initialized"); | |
| 101 debug_only(cpu_range_check(rnr);) | |
| 102 return _cpu_rnr2reg[rnr]; | |
| 103 } | |
| 104 | |
| 105 static int cpu_reg2rnr (Register reg) { | |
| 106 assert(_init_done, "tables not initialized"); | |
| 107 debug_only(cpu_range_check(reg->encoding());) | |
| 108 return _cpu_reg2rnr[reg->encoding()]; | |
| 109 } | |
| 110 | |
| 111 static void map_register(int rnr, Register reg) { | |
| 112 debug_only(cpu_range_check(rnr);) | |
| 113 debug_only(cpu_range_check(reg->encoding());) | |
| 114 _cpu_rnr2reg[rnr] = reg; | |
| 115 _cpu_reg2rnr[reg->encoding()] = rnr; | |
| 116 } | |
| 117 | |
| 118 void update_reserved_argument_area_size (int size) { | |
| 119 assert(size >= 0, "check"); | |
| 120 _reserved_argument_area_size = MAX2(_reserved_argument_area_size, size); | |
| 121 } | |
| 122 | |
| 123 protected: | |
| 124 #ifndef PRODUCT | |
| 125 static void cpu_range_check (int rnr) { assert(0 <= rnr && rnr < nof_cpu_regs, "cpu register number is too big"); } | |
| 126 static void fpu_range_check (int rnr) { assert(0 <= rnr && rnr < nof_fpu_regs, "fpu register number is too big"); } | |
| 127 #endif | |
| 128 | |
| 129 | |
| 130 ByteSize sp_offset_for_monitor_base(const int idx) const; | |
| 131 | |
| 132 Address make_new_address(ByteSize sp_offset) const; | |
| 133 | |
| 134 ByteSize sp_offset_for_slot(const int idx) const; | |
| 135 ByteSize sp_offset_for_double_slot(const int idx) const; | |
| 136 ByteSize sp_offset_for_spill(const int idx) const; | |
| 137 ByteSize sp_offset_for_monitor_lock(int monitor_index) const; | |
| 138 ByteSize sp_offset_for_monitor_object(int monitor_index) const; | |
| 139 | |
| 140 VMReg sp_offset2vmreg(ByteSize offset) const; | |
| 141 | |
| 142 // platform dependent hook used to check that frame is properly | |
| 143 // addressable on the platform. Used by sparc to verify that all | |
| 144 // stack addresses are expressable in a simm13. | |
| 145 bool validate_frame(); | |
| 146 | |
| 147 static LIR_Opr map_to_opr(BasicType type, VMRegPair* reg, bool incoming); | |
| 148 | |
| 149 public: | |
| 150 // Opr representing the stack_pointer on this platform | |
| 151 static LIR_Opr stack_pointer(); | |
| 152 | |
| 153 static BasicTypeArray* signature_type_array_for(const ciMethod* method); | |
| 154 static BasicTypeArray* signature_type_array_for(const char * signature); | |
| 155 | |
| 156 // for outgoing calls, these also update the reserved area to | |
| 157 // include space for arguments and any ABI area. | |
| 158 CallingConvention* c_calling_convention (const BasicTypeArray* signature); | |
| 159 CallingConvention* java_calling_convention (const BasicTypeArray* signature, bool outgoing); | |
| 160 | |
| 161 // deopt support | |
| 162 ByteSize sp_offset_for_orig_pc() { return sp_offset_for_monitor_base(_num_monitors); } | |
| 163 | |
| 164 static LIR_Opr as_opr(Register r) { | |
| 165 return LIR_OprFact::single_cpu(cpu_reg2rnr(r)); | |
| 166 } | |
| 167 static LIR_Opr as_oop_opr(Register r) { | |
| 168 return LIR_OprFact::single_cpu_oop(cpu_reg2rnr(r)); | |
| 169 } | |
| 170 | |
| 171 FrameMap(ciMethod* method, int monitors, int reserved_argument_area_size); | |
| 172 bool finalize_frame(int nof_slots); | |
| 173 | |
| 174 int reserved_argument_area_size () const { return _reserved_argument_area_size; } | |
| 175 int framesize () const { assert(_framesize != -1, "hasn't been calculated"); return _framesize; } | |
| 176 ByteSize framesize_in_bytes () const { return in_ByteSize(framesize() * 4); } | |
| 177 int num_monitors () const { return _num_monitors; } | |
| 178 int num_spills () const { assert(_num_spills >= 0, "not set"); return _num_spills; } | |
| 179 int argcount () const { assert(_argcount >= 0, "not set"); return _argcount; } | |
| 180 | |
| 181 int oop_map_arg_count() const { return _oop_map_arg_count; } | |
| 182 | |
| 183 CallingConvention* incoming_arguments() const { return _incoming_arguments; } | |
| 184 | |
| 185 // convenience routines | |
| 186 Address address_for_slot(int index, int sp_adjust = 0) const { | |
| 187 return make_new_address(sp_offset_for_slot(index) + in_ByteSize(sp_adjust)); | |
| 188 } | |
| 189 Address address_for_double_slot(int index, int sp_adjust = 0) const { | |
| 190 return make_new_address(sp_offset_for_double_slot(index) + in_ByteSize(sp_adjust)); | |
| 191 } | |
| 192 Address address_for_monitor_lock(int monitor_index) const { | |
| 193 return make_new_address(sp_offset_for_monitor_lock(monitor_index)); | |
| 194 } | |
| 195 Address address_for_monitor_object(int monitor_index) const { | |
| 196 return make_new_address(sp_offset_for_monitor_object(monitor_index)); | |
| 197 } | |
| 198 | |
| 199 void print_frame_layout() const; | |
| 200 | |
| 201 // Creates Location describing desired slot and returns it via pointer | |
| 202 // to Location object. Returns true if the stack frame offset was legal | |
| 203 // (as defined by Location::legal_offset_in_bytes()), false otherwise. | |
| 204 // Do not use the returned location if this returns false. | |
| 205 bool location_for_sp_offset(ByteSize byte_offset_from_sp, | |
| 206 Location::Type loc_type, Location* loc) const; | |
| 207 | |
| 208 bool location_for_monitor_lock (int monitor_index, Location* loc) const { | |
| 209 return location_for_sp_offset(sp_offset_for_monitor_lock(monitor_index), Location::normal, loc); | |
| 210 } | |
| 211 bool location_for_monitor_object(int monitor_index, Location* loc) const { | |
| 212 return location_for_sp_offset(sp_offset_for_monitor_object(monitor_index), Location::oop, loc); | |
| 213 } | |
| 214 bool locations_for_slot (int index, Location::Type loc_type, | |
| 215 Location* loc, Location* second = NULL) const; | |
| 216 | |
| 217 VMReg slot_regname(int index) const { | |
| 218 return sp_offset2vmreg(sp_offset_for_slot(index)); | |
| 219 } | |
| 220 VMReg monitor_object_regname(int monitor_index) const { | |
| 221 return sp_offset2vmreg(sp_offset_for_monitor_object(monitor_index)); | |
| 222 } | |
| 223 VMReg regname(LIR_Opr opr) const; | |
| 224 | |
| 225 static LIR_Opr caller_save_cpu_reg_at(int i) { | |
| 226 assert(i >= 0 && i < nof_caller_save_cpu_regs, "out of bounds"); | |
| 227 return _caller_save_cpu_regs[i]; | |
| 228 } | |
| 229 | |
| 230 static LIR_Opr caller_save_fpu_reg_at(int i) { | |
| 231 assert(i >= 0 && i < nof_caller_save_fpu_regs, "out of bounds"); | |
| 232 return _caller_save_fpu_regs[i]; | |
| 233 } | |
| 234 | |
| 235 static void init(); | |
| 236 }; | |
| 237 | |
| 238 // CallingConvention | |
| 239 //-------------------------------------------------------- | |
| 240 | |
| 241 class CallingConvention: public ResourceObj { | |
| 242 private: | |
| 243 LIR_OprList* _args; | |
| 244 int _reserved_stack_slots; | |
| 245 | |
| 246 public: | |
| 247 CallingConvention (LIR_OprList* args, int reserved_stack_slots) | |
| 248 : _args(args) | |
| 249 , _reserved_stack_slots(reserved_stack_slots) {} | |
| 250 | |
| 251 LIR_OprList* args() { return _args; } | |
| 252 | |
| 253 LIR_Opr at(int i) const { return _args->at(i); } | |
| 254 int length() const { return _args->length(); } | |
| 255 | |
| 256 // Indicates number of real frame slots used by arguments passed on stack. | |
| 257 int reserved_stack_slots() const { return _reserved_stack_slots; } | |
| 258 | |
| 259 #ifndef PRODUCT | |
| 260 void print () const { | |
| 261 for (int i = 0; i < length(); i++) { | |
| 262 at(i)->print(); | |
| 263 } | |
| 264 } | |
| 265 #endif // PRODUCT | |
| 266 }; |