Mercurial > hg > graal-compiler
annotate src/share/vm/c1/c1_FrameMap.cpp @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | 9ee9cf798b59 |
| children | b812ff5abc73 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 2008, 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 # include "incls/_precompiled.incl" | |
| 26 # include "incls/_c1_FrameMap.cpp.incl" | |
| 27 | |
| 28 | |
| 29 | |
| 30 //----------------------------------------------------- | |
| 31 | |
| 32 // Convert method signature into an array of BasicTypes for the arguments | |
| 33 BasicTypeArray* FrameMap::signature_type_array_for(const ciMethod* method) { | |
| 34 ciSignature* sig = method->signature(); | |
| 35 BasicTypeList* sta = new BasicTypeList(method->arg_size()); | |
| 36 // add receiver, if any | |
| 37 if (!method->is_static()) sta->append(T_OBJECT); | |
| 38 // add remaining arguments | |
| 39 for (int i = 0; i < sig->count(); i++) { | |
| 40 ciType* type = sig->type_at(i); | |
| 41 BasicType t = type->basic_type(); | |
| 42 if (t == T_ARRAY) { | |
| 43 t = T_OBJECT; | |
| 44 } | |
| 45 sta->append(t); | |
| 46 } | |
| 47 // done | |
| 48 return sta; | |
| 49 } | |
| 50 | |
| 51 | |
| 52 CallingConvention* FrameMap::java_calling_convention(const BasicTypeArray* signature, bool outgoing) { | |
| 53 // compute the size of the arguments first. The signature array | |
| 54 // that java_calling_convention takes includes a T_VOID after double | |
| 55 // work items but our signatures do not. | |
| 56 int i; | |
| 57 int sizeargs = 0; | |
| 58 for (i = 0; i < signature->length(); i++) { | |
| 59 sizeargs += type2size[signature->at(i)]; | |
| 60 } | |
| 61 | |
| 62 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, sizeargs); | |
| 63 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); | |
| 64 int sig_index = 0; | |
| 65 for (i = 0; i < sizeargs; i++, sig_index++) { | |
| 66 sig_bt[i] = signature->at(sig_index); | |
| 67 if (sig_bt[i] == T_LONG || sig_bt[i] == T_DOUBLE) { | |
| 68 sig_bt[i + 1] = T_VOID; | |
| 69 i++; | |
| 70 } | |
| 71 } | |
| 72 | |
| 73 intptr_t out_preserve = SharedRuntime::java_calling_convention(sig_bt, regs, sizeargs, outgoing); | |
| 74 LIR_OprList* args = new LIR_OprList(signature->length()); | |
| 75 for (i = 0; i < sizeargs;) { | |
| 76 BasicType t = sig_bt[i]; | |
| 77 assert(t != T_VOID, "should be skipping these"); | |
| 78 | |
| 79 LIR_Opr opr = map_to_opr(t, regs + i, outgoing); | |
| 80 args->append(opr); | |
| 81 if (opr->is_address()) { | |
| 82 LIR_Address* addr = opr->as_address_ptr(); | |
| 83 assert(addr->disp() == (int)addr->disp(), "out of range value"); | |
| 84 out_preserve = MAX2(out_preserve, (intptr_t)addr->disp() / 4); | |
| 85 } | |
| 86 i += type2size[t]; | |
| 87 } | |
| 88 assert(args->length() == signature->length(), "size mismatch"); | |
| 89 out_preserve += SharedRuntime::out_preserve_stack_slots(); | |
| 90 | |
| 91 if (outgoing) { | |
| 92 // update the space reserved for arguments. | |
| 93 update_reserved_argument_area_size(out_preserve); | |
| 94 } | |
| 95 return new CallingConvention(args, out_preserve); | |
| 96 } | |
| 97 | |
| 98 | |
| 99 CallingConvention* FrameMap::c_calling_convention(const BasicTypeArray* signature) { | |
| 100 // compute the size of the arguments first. The signature array | |
| 101 // that java_calling_convention takes includes a T_VOID after double | |
| 102 // work items but our signatures do not. | |
| 103 int i; | |
| 104 int sizeargs = 0; | |
| 105 for (i = 0; i < signature->length(); i++) { | |
| 106 sizeargs += type2size[signature->at(i)]; | |
| 107 } | |
| 108 | |
| 109 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, sizeargs); | |
| 110 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); | |
| 111 int sig_index = 0; | |
| 112 for (i = 0; i < sizeargs; i++, sig_index++) { | |
| 113 sig_bt[i] = signature->at(sig_index); | |
| 114 if (sig_bt[i] == T_LONG || sig_bt[i] == T_DOUBLE) { | |
| 115 sig_bt[i + 1] = T_VOID; | |
| 116 i++; | |
| 117 } | |
| 118 } | |
| 119 | |
| 120 intptr_t out_preserve = SharedRuntime::c_calling_convention(sig_bt, regs, sizeargs); | |
| 121 LIR_OprList* args = new LIR_OprList(signature->length()); | |
| 122 for (i = 0; i < sizeargs;) { | |
| 123 BasicType t = sig_bt[i]; | |
| 124 assert(t != T_VOID, "should be skipping these"); | |
| 125 | |
| 126 // C calls are always outgoing | |
| 127 bool outgoing = true; | |
| 128 LIR_Opr opr = map_to_opr(t, regs + i, outgoing); | |
| 129 // they might be of different types if for instance floating point | |
| 130 // values are passed in cpu registers, but the sizes must match. | |
| 131 assert(type2size[opr->type()] == type2size[t], "type mismatch"); | |
| 132 args->append(opr); | |
| 133 if (opr->is_address()) { | |
| 134 LIR_Address* addr = opr->as_address_ptr(); | |
| 135 out_preserve = MAX2(out_preserve, (intptr_t)addr->disp() / 4); | |
| 136 } | |
| 137 i += type2size[t]; | |
| 138 } | |
| 139 assert(args->length() == signature->length(), "size mismatch"); | |
| 140 out_preserve += SharedRuntime::out_preserve_stack_slots(); | |
| 141 update_reserved_argument_area_size(out_preserve); | |
| 142 return new CallingConvention(args, out_preserve); | |
| 143 } | |
| 144 | |
| 145 | |
| 146 //-------------------------------------------------------- | |
| 147 // FrameMap | |
| 148 //-------------------------------------------------------- | |
| 149 | |
| 150 bool FrameMap::_init_done = false; | |
| 151 Register FrameMap::_cpu_rnr2reg [FrameMap::nof_cpu_regs]; | |
| 152 int FrameMap::_cpu_reg2rnr [FrameMap::nof_cpu_regs]; | |
| 153 | |
| 154 | |
| 155 FrameMap::FrameMap(ciMethod* method, int monitors, int reserved_argument_area_size) { | |
| 156 if (!_init_done) init(); | |
| 157 | |
| 158 _framesize = -1; | |
| 159 _num_spills = -1; | |
| 160 | |
| 161 assert(monitors >= 0, "not set"); | |
| 162 _num_monitors = monitors; | |
| 163 assert(reserved_argument_area_size >= 0, "not set"); | |
| 164 _reserved_argument_area_size = MAX2(4, reserved_argument_area_size) * BytesPerWord; | |
| 165 | |
| 166 _argcount = method->arg_size(); | |
| 167 _argument_locations = new intArray(_argcount, -1); | |
| 168 _incoming_arguments = java_calling_convention(signature_type_array_for(method), false); | |
| 169 _oop_map_arg_count = _incoming_arguments->reserved_stack_slots(); | |
| 170 | |
| 171 int java_index = 0; | |
| 172 for (int i = 0; i < _incoming_arguments->length(); i++) { | |
| 173 LIR_Opr opr = _incoming_arguments->at(i); | |
| 174 if (opr->is_address()) { | |
| 175 LIR_Address* address = opr->as_address_ptr(); | |
| 176 _argument_locations->at_put(java_index, address->disp() - STACK_BIAS); | |
| 177 _incoming_arguments->args()->at_put(i, LIR_OprFact::stack(java_index, as_BasicType(as_ValueType(address->type())))); | |
| 178 } | |
| 179 java_index += type2size[opr->type()]; | |
| 180 } | |
| 181 | |
| 182 } | |
| 183 | |
| 184 | |
| 185 bool FrameMap::finalize_frame(int nof_slots) { | |
| 186 assert(nof_slots >= 0, "must be positive"); | |
| 187 assert(_num_spills == -1, "can only be set once"); | |
| 188 _num_spills = nof_slots; | |
| 189 assert(_framesize == -1, "should only be calculated once"); | |
| 190 _framesize = round_to(in_bytes(sp_offset_for_monitor_base(0)) + | |
| 191 _num_monitors * sizeof(BasicObjectLock) + | |
| 192 sizeof(intptr_t) + // offset of deopt orig pc | |
| 193 frame_pad_in_bytes, | |
| 194 StackAlignmentInBytes) / 4; | |
| 195 int java_index = 0; | |
| 196 for (int i = 0; i < _incoming_arguments->length(); i++) { | |
| 197 LIR_Opr opr = _incoming_arguments->at(i); | |
| 198 if (opr->is_stack()) { | |
| 199 _argument_locations->at_put(java_index, in_bytes(framesize_in_bytes()) + | |
| 200 _argument_locations->at(java_index)); | |
| 201 } | |
| 202 java_index += type2size[opr->type()]; | |
| 203 } | |
| 204 // make sure it's expressible on the platform | |
| 205 return validate_frame(); | |
| 206 } | |
| 207 | |
| 208 VMReg FrameMap::sp_offset2vmreg(ByteSize offset) const { | |
| 209 int offset_in_bytes = in_bytes(offset); | |
| 210 assert(offset_in_bytes % 4 == 0, "must be multiple of 4 bytes"); | |
| 211 assert(offset_in_bytes / 4 < framesize() + oop_map_arg_count(), "out of range"); | |
| 212 return VMRegImpl::stack2reg(offset_in_bytes / 4); | |
| 213 } | |
| 214 | |
| 215 | |
| 216 bool FrameMap::location_for_sp_offset(ByteSize byte_offset_from_sp, | |
| 217 Location::Type loc_type, | |
| 218 Location* loc) const { | |
| 219 int offset = in_bytes(byte_offset_from_sp); | |
| 220 assert(offset >= 0, "incorrect offset"); | |
| 221 if (!Location::legal_offset_in_bytes(offset)) { | |
| 222 return false; | |
| 223 } | |
| 224 Location tmp_loc = Location::new_stk_loc(loc_type, offset); | |
| 225 *loc = tmp_loc; | |
| 226 return true; | |
| 227 } | |
| 228 | |
| 229 | |
| 230 bool FrameMap::locations_for_slot (int index, Location::Type loc_type, | |
| 231 Location* loc, Location* second) const { | |
| 232 ByteSize offset_from_sp = sp_offset_for_slot(index); | |
| 233 if (!location_for_sp_offset(offset_from_sp, loc_type, loc)) { | |
| 234 return false; | |
| 235 } | |
| 236 if (second != NULL) { | |
| 237 // two word item | |
| 238 offset_from_sp = offset_from_sp + in_ByteSize(4); | |
| 239 return location_for_sp_offset(offset_from_sp, loc_type, second); | |
| 240 } | |
| 241 return true; | |
| 242 } | |
| 243 | |
| 244 ////////////////////// | |
| 245 // Public accessors // | |
| 246 ////////////////////// | |
| 247 | |
| 248 | |
| 249 ByteSize FrameMap::sp_offset_for_slot(const int index) const { | |
| 250 if (index < argcount()) { | |
| 251 int offset = _argument_locations->at(index); | |
| 252 assert(offset != -1, "not a memory argument"); | |
| 253 assert(offset >= framesize() * 4, "argument inside of frame"); | |
| 254 return in_ByteSize(offset); | |
| 255 } | |
| 256 ByteSize offset = sp_offset_for_spill(index - argcount()); | |
| 257 assert(in_bytes(offset) < framesize() * 4, "spill outside of frame"); | |
| 258 return offset; | |
| 259 } | |
| 260 | |
| 261 | |
| 262 ByteSize FrameMap::sp_offset_for_double_slot(const int index) const { | |
| 263 ByteSize offset = sp_offset_for_slot(index); | |
| 264 if (index >= argcount()) { | |
| 265 assert(in_bytes(offset) + 4 < framesize() * 4, "spill outside of frame"); | |
| 266 } | |
| 267 return offset; | |
| 268 } | |
| 269 | |
| 270 | |
| 271 ByteSize FrameMap::sp_offset_for_spill(const int index) const { | |
| 272 assert(index >= 0 && index < _num_spills, "out of range"); | |
| 273 int offset = round_to(first_available_sp_in_frame + _reserved_argument_area_size, sizeof(double)) + | |
| 274 index * spill_slot_size_in_bytes; | |
| 275 return in_ByteSize(offset); | |
| 276 } | |
| 277 | |
| 278 ByteSize FrameMap::sp_offset_for_monitor_base(const int index) const { | |
| 279 int end_of_spills = round_to(first_available_sp_in_frame + _reserved_argument_area_size, sizeof(double)) + | |
| 280 _num_spills * spill_slot_size_in_bytes; | |
| 304 | 281 int offset = (int) round_to(end_of_spills, HeapWordSize) + index * sizeof(BasicObjectLock); |
| 0 | 282 return in_ByteSize(offset); |
| 283 } | |
| 284 | |
| 285 ByteSize FrameMap::sp_offset_for_monitor_lock(int index) const { | |
| 286 check_monitor_index(index); | |
| 287 return sp_offset_for_monitor_base(index) + in_ByteSize(BasicObjectLock::lock_offset_in_bytes());; | |
| 288 } | |
| 289 | |
| 290 ByteSize FrameMap::sp_offset_for_monitor_object(int index) const { | |
| 291 check_monitor_index(index); | |
| 292 return sp_offset_for_monitor_base(index) + in_ByteSize(BasicObjectLock::obj_offset_in_bytes()); | |
| 293 } | |
| 294 | |
| 295 void FrameMap::print_frame_layout() const { | |
| 296 int svar; | |
| 297 tty->print_cr("#####################################"); | |
| 298 tty->print_cr("Frame size in words %d", framesize()); | |
| 299 | |
| 300 if( _num_monitors > 0) { | |
| 301 tty->print_cr("monitor [0]:%d | [%2d]:%d", | |
| 302 in_bytes(sp_offset_for_monitor_base(0)), | |
| 303 in_bytes(sp_offset_for_monitor_base(_num_monitors))); | |
| 304 } | |
| 305 if( _num_spills > 0) { | |
| 306 svar = _num_spills - 1; | |
| 307 if(svar == 0) | |
| 308 tty->print_cr("spill [0]:%d", in_bytes(sp_offset_for_spill(0))); | |
| 309 else | |
| 310 tty->print_cr("spill [0]:%d | [%2d]:%d", in_bytes(sp_offset_for_spill(0)), | |
| 311 svar, | |
| 312 in_bytes(sp_offset_for_spill(svar))); | |
| 313 } | |
| 314 } | |
| 315 | |
| 316 | |
| 317 // For OopMaps, map a local variable or spill index to an VMReg. | |
| 318 // This is the offset from sp() in the frame of the slot for the index, | |
| 319 // skewed by SharedInfo::stack0 to indicate a stack location (vs.a register.) | |
| 320 // | |
| 321 // C ABI size + | |
| 322 // framesize + framesize + | |
| 323 // stack0 stack0 stack0 0 <- VMReg->value() | |
| 324 // | | | <registers> | | |
| 325 // ..........|..............|..............|.............| | |
| 326 // 0 1 2 3 | <C ABI area> | 4 5 6 ...... | <- local indices | |
| 327 // ^ ^ sp() | |
| 328 // | | | |
| 329 // arguments non-argument locals | |
| 330 | |
| 331 | |
| 332 VMReg FrameMap::regname(LIR_Opr opr) const { | |
| 333 if (opr->is_single_cpu()) { | |
| 334 assert(!opr->is_virtual(), "should not see virtual registers here"); | |
| 335 return opr->as_register()->as_VMReg(); | |
| 336 } else if (opr->is_single_stack()) { | |
| 337 return sp_offset2vmreg(sp_offset_for_slot(opr->single_stack_ix())); | |
| 338 } else if (opr->is_address()) { | |
| 339 LIR_Address* addr = opr->as_address_ptr(); | |
| 340 assert(addr->base() == stack_pointer(), "sp based addressing only"); | |
| 341 return sp_offset2vmreg(in_ByteSize(addr->index()->as_jint())); | |
| 342 } | |
| 343 ShouldNotReachHere(); | |
| 344 return VMRegImpl::Bad(); | |
| 345 } | |
| 346 | |
| 347 | |
| 348 | |
| 349 | |
| 350 // ------------ extra spill slots --------------- |