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annotate src/share/vm/c1/c1_FrameMap.hpp @ 2426:1d1603768966
7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
Summary: Update the copyright to be 2010 on all changed files in OpenJDK
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Tue, 05 Apr 2011 14:12:31 -0700 |
| parents | b92c45f2bc75 |
| children | 1d7922586cf6 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 2011, 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 | |
| 1972 | 25 #ifndef SHARE_VM_C1_C1_FRAMEMAP_HPP |
| 26 #define SHARE_VM_C1_C1_FRAMEMAP_HPP | |
| 27 | |
| 28 #include "asm/assembler.hpp" | |
| 29 #include "c1/c1_Defs.hpp" | |
| 30 #include "c1/c1_LIR.hpp" | |
| 31 #include "code/vmreg.hpp" | |
| 32 #include "memory/allocation.hpp" | |
| 33 #include "runtime/frame.hpp" | |
| 34 #include "runtime/synchronizer.hpp" | |
| 35 #include "utilities/globalDefinitions.hpp" | |
| 36 | |
| 0 | 37 class ciMethod; |
| 38 class CallingConvention; | |
| 39 class BasicTypeArray; | |
| 40 class BasicTypeList; | |
| 41 | |
| 42 //-------------------------------------------------------- | |
| 43 // FrameMap | |
| 44 //-------------------------------------------------------- | |
| 45 | |
| 46 // This class is responsible of mapping items (locals, monitors, spill | |
| 47 // slots and registers to their frame location | |
| 48 // | |
| 49 // The monitors are specified by a consecutive index, although each monitor entry | |
| 50 // occupies two words. The monitor_index is 0.._num_monitors | |
| 51 // The spill index is similar to local index; it is in range 0..(open) | |
| 52 // | |
| 53 // The CPU registers are mapped using a fixed table; register with number 0 | |
| 54 // is the most used one. | |
| 55 | |
| 56 | |
| 57 // stack grow direction --> SP | |
| 58 // +----------+---+----------+-------+------------------------+-----+ | |
| 59 // |arguments | x | monitors | spill | reserved argument area | ABI | | |
| 60 // +----------+---+----------+-------+------------------------+-----+ | |
| 61 // | |
| 62 // x = ABI area (SPARC) or return adress and link (i486) | |
| 63 // ABI = ABI area (SPARC) or nothing (i486) | |
| 64 | |
| 65 | |
| 66 class LIR_OprDesc; | |
| 67 typedef LIR_OprDesc* LIR_Opr; | |
| 68 | |
| 69 | |
| 70 class FrameMap : public CompilationResourceObj { | |
| 71 public: | |
| 72 enum { | |
| 73 nof_cpu_regs = pd_nof_cpu_regs_frame_map, | |
| 74 nof_fpu_regs = pd_nof_fpu_regs_frame_map, | |
| 75 | |
| 76 nof_cpu_regs_reg_alloc = pd_nof_cpu_regs_reg_alloc, | |
| 77 nof_fpu_regs_reg_alloc = pd_nof_fpu_regs_reg_alloc, | |
| 78 | |
| 2002 | 79 max_nof_caller_save_cpu_regs = pd_nof_caller_save_cpu_regs_frame_map, |
| 80 nof_caller_save_fpu_regs = pd_nof_caller_save_fpu_regs_frame_map, | |
| 0 | 81 |
| 82 spill_slot_size_in_bytes = 4 | |
| 83 }; | |
| 84 | |
| 1972 | 85 #ifdef TARGET_ARCH_x86 |
| 86 # include "c1_FrameMap_x86.hpp" | |
| 87 #endif | |
| 88 #ifdef TARGET_ARCH_sparc | |
| 89 # include "c1_FrameMap_sparc.hpp" | |
| 90 #endif | |
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91 #ifdef TARGET_ARCH_arm |
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92 # include "c1_FrameMap_arm.hpp" |
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93 #endif |
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94 #ifdef TARGET_ARCH_ppc |
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95 # include "c1_FrameMap_ppc.hpp" |
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96 #endif |
| 1972 | 97 |
| 0 | 98 |
| 99 friend class LIR_OprDesc; | |
| 100 | |
| 101 private: | |
| 102 static bool _init_done; | |
| 103 static Register _cpu_rnr2reg [nof_cpu_regs]; | |
| 104 static int _cpu_reg2rnr [nof_cpu_regs]; | |
| 105 | |
| 2002 | 106 static LIR_Opr _caller_save_cpu_regs [max_nof_caller_save_cpu_regs]; |
| 0 | 107 static LIR_Opr _caller_save_fpu_regs [nof_caller_save_fpu_regs]; |
| 108 | |
| 109 int _framesize; | |
| 110 int _argcount; | |
| 111 int _num_monitors; | |
| 112 int _num_spills; | |
| 113 int _reserved_argument_area_size; | |
| 114 int _oop_map_arg_count; | |
| 115 | |
| 116 CallingConvention* _incoming_arguments; | |
| 117 intArray* _argument_locations; | |
| 118 | |
| 119 void check_spill_index (int spill_index) const { assert(spill_index >= 0, "bad index"); } | |
| 120 void check_monitor_index (int monitor_index) const { assert(monitor_index >= 0 && | |
| 121 monitor_index < _num_monitors, "bad index"); } | |
| 122 | |
| 123 static Register cpu_rnr2reg (int rnr) { | |
| 124 assert(_init_done, "tables not initialized"); | |
| 125 debug_only(cpu_range_check(rnr);) | |
| 126 return _cpu_rnr2reg[rnr]; | |
| 127 } | |
| 128 | |
| 129 static int cpu_reg2rnr (Register reg) { | |
| 130 assert(_init_done, "tables not initialized"); | |
| 131 debug_only(cpu_range_check(reg->encoding());) | |
| 132 return _cpu_reg2rnr[reg->encoding()]; | |
| 133 } | |
| 134 | |
| 135 static void map_register(int rnr, Register reg) { | |
| 136 debug_only(cpu_range_check(rnr);) | |
| 137 debug_only(cpu_range_check(reg->encoding());) | |
| 138 _cpu_rnr2reg[rnr] = reg; | |
| 139 _cpu_reg2rnr[reg->encoding()] = rnr; | |
| 140 } | |
| 141 | |
| 142 void update_reserved_argument_area_size (int size) { | |
| 143 assert(size >= 0, "check"); | |
| 144 _reserved_argument_area_size = MAX2(_reserved_argument_area_size, size); | |
| 145 } | |
| 146 | |
| 147 protected: | |
| 148 #ifndef PRODUCT | |
| 149 static void cpu_range_check (int rnr) { assert(0 <= rnr && rnr < nof_cpu_regs, "cpu register number is too big"); } | |
| 150 static void fpu_range_check (int rnr) { assert(0 <= rnr && rnr < nof_fpu_regs, "fpu register number is too big"); } | |
| 151 #endif | |
| 152 | |
| 153 | |
| 154 ByteSize sp_offset_for_monitor_base(const int idx) const; | |
| 155 | |
| 156 Address make_new_address(ByteSize sp_offset) const; | |
| 157 | |
| 158 ByteSize sp_offset_for_slot(const int idx) const; | |
| 159 ByteSize sp_offset_for_double_slot(const int idx) const; | |
| 160 ByteSize sp_offset_for_spill(const int idx) const; | |
| 161 ByteSize sp_offset_for_monitor_lock(int monitor_index) const; | |
| 162 ByteSize sp_offset_for_monitor_object(int monitor_index) const; | |
| 163 | |
| 164 VMReg sp_offset2vmreg(ByteSize offset) const; | |
| 165 | |
| 166 // platform dependent hook used to check that frame is properly | |
| 167 // addressable on the platform. Used by sparc to verify that all | |
| 168 // stack addresses are expressable in a simm13. | |
| 169 bool validate_frame(); | |
| 170 | |
| 171 static LIR_Opr map_to_opr(BasicType type, VMRegPair* reg, bool incoming); | |
| 172 | |
| 173 public: | |
| 174 // Opr representing the stack_pointer on this platform | |
| 175 static LIR_Opr stack_pointer(); | |
| 176 | |
| 1564 | 177 // JSR 292 |
| 178 static LIR_Opr method_handle_invoke_SP_save_opr(); | |
| 179 | |
| 0 | 180 static BasicTypeArray* signature_type_array_for(const ciMethod* method); |
| 181 | |
| 182 // for outgoing calls, these also update the reserved area to | |
| 183 // include space for arguments and any ABI area. | |
| 184 CallingConvention* c_calling_convention (const BasicTypeArray* signature); | |
| 185 CallingConvention* java_calling_convention (const BasicTypeArray* signature, bool outgoing); | |
| 186 | |
| 187 // deopt support | |
| 188 ByteSize sp_offset_for_orig_pc() { return sp_offset_for_monitor_base(_num_monitors); } | |
| 189 | |
| 190 static LIR_Opr as_opr(Register r) { | |
| 191 return LIR_OprFact::single_cpu(cpu_reg2rnr(r)); | |
| 192 } | |
| 193 static LIR_Opr as_oop_opr(Register r) { | |
| 194 return LIR_OprFact::single_cpu_oop(cpu_reg2rnr(r)); | |
| 195 } | |
| 196 | |
| 197 FrameMap(ciMethod* method, int monitors, int reserved_argument_area_size); | |
| 198 bool finalize_frame(int nof_slots); | |
| 199 | |
| 200 int reserved_argument_area_size () const { return _reserved_argument_area_size; } | |
| 201 int framesize () const { assert(_framesize != -1, "hasn't been calculated"); return _framesize; } | |
| 202 ByteSize framesize_in_bytes () const { return in_ByteSize(framesize() * 4); } | |
| 203 int num_monitors () const { return _num_monitors; } | |
| 204 int num_spills () const { assert(_num_spills >= 0, "not set"); return _num_spills; } | |
| 205 int argcount () const { assert(_argcount >= 0, "not set"); return _argcount; } | |
| 206 | |
| 207 int oop_map_arg_count() const { return _oop_map_arg_count; } | |
| 208 | |
| 209 CallingConvention* incoming_arguments() const { return _incoming_arguments; } | |
| 210 | |
| 211 // convenience routines | |
| 212 Address address_for_slot(int index, int sp_adjust = 0) const { | |
| 213 return make_new_address(sp_offset_for_slot(index) + in_ByteSize(sp_adjust)); | |
| 214 } | |
| 215 Address address_for_double_slot(int index, int sp_adjust = 0) const { | |
| 216 return make_new_address(sp_offset_for_double_slot(index) + in_ByteSize(sp_adjust)); | |
| 217 } | |
| 218 Address address_for_monitor_lock(int monitor_index) const { | |
| 219 return make_new_address(sp_offset_for_monitor_lock(monitor_index)); | |
| 220 } | |
| 221 Address address_for_monitor_object(int monitor_index) const { | |
| 222 return make_new_address(sp_offset_for_monitor_object(monitor_index)); | |
| 223 } | |
| 224 | |
| 225 void print_frame_layout() const; | |
| 226 | |
| 227 // Creates Location describing desired slot and returns it via pointer | |
| 228 // to Location object. Returns true if the stack frame offset was legal | |
| 229 // (as defined by Location::legal_offset_in_bytes()), false otherwise. | |
| 230 // Do not use the returned location if this returns false. | |
| 231 bool location_for_sp_offset(ByteSize byte_offset_from_sp, | |
| 232 Location::Type loc_type, Location* loc) const; | |
| 233 | |
| 234 bool location_for_monitor_lock (int monitor_index, Location* loc) const { | |
| 235 return location_for_sp_offset(sp_offset_for_monitor_lock(monitor_index), Location::normal, loc); | |
| 236 } | |
| 237 bool location_for_monitor_object(int monitor_index, Location* loc) const { | |
| 238 return location_for_sp_offset(sp_offset_for_monitor_object(monitor_index), Location::oop, loc); | |
| 239 } | |
| 240 bool locations_for_slot (int index, Location::Type loc_type, | |
| 241 Location* loc, Location* second = NULL) const; | |
| 242 | |
| 243 VMReg slot_regname(int index) const { | |
| 244 return sp_offset2vmreg(sp_offset_for_slot(index)); | |
| 245 } | |
| 246 VMReg monitor_object_regname(int monitor_index) const { | |
| 247 return sp_offset2vmreg(sp_offset_for_monitor_object(monitor_index)); | |
| 248 } | |
| 249 VMReg regname(LIR_Opr opr) const; | |
| 250 | |
| 251 static LIR_Opr caller_save_cpu_reg_at(int i) { | |
| 2002 | 252 assert(i >= 0 && i < max_nof_caller_save_cpu_regs, "out of bounds"); |
| 0 | 253 return _caller_save_cpu_regs[i]; |
| 254 } | |
| 255 | |
| 256 static LIR_Opr caller_save_fpu_reg_at(int i) { | |
| 257 assert(i >= 0 && i < nof_caller_save_fpu_regs, "out of bounds"); | |
| 258 return _caller_save_fpu_regs[i]; | |
| 259 } | |
| 260 | |
| 1584 | 261 static void initialize(); |
| 0 | 262 }; |
| 263 | |
| 264 // CallingConvention | |
| 265 //-------------------------------------------------------- | |
| 266 | |
| 267 class CallingConvention: public ResourceObj { | |
| 268 private: | |
| 269 LIR_OprList* _args; | |
| 270 int _reserved_stack_slots; | |
| 271 | |
| 272 public: | |
| 273 CallingConvention (LIR_OprList* args, int reserved_stack_slots) | |
| 274 : _args(args) | |
| 275 , _reserved_stack_slots(reserved_stack_slots) {} | |
| 276 | |
| 277 LIR_OprList* args() { return _args; } | |
| 278 | |
| 279 LIR_Opr at(int i) const { return _args->at(i); } | |
| 280 int length() const { return _args->length(); } | |
| 281 | |
| 282 // Indicates number of real frame slots used by arguments passed on stack. | |
| 283 int reserved_stack_slots() const { return _reserved_stack_slots; } | |
| 284 | |
| 285 #ifndef PRODUCT | |
| 286 void print () const { | |
| 287 for (int i = 0; i < length(); i++) { | |
| 288 at(i)->print(); | |
| 289 } | |
| 290 } | |
| 291 #endif // PRODUCT | |
| 292 }; | |
| 1972 | 293 |
| 294 #endif // SHARE_VM_C1_C1_FRAMEMAP_HPP |