Mercurial > hg > truffle
annotate src/share/vm/c1/c1_FrameMap.cpp @ 14694:58cf34613a72
8036976: PPC64: implement the template interpreter
Reviewed-by: kvn, coleenp
Contributed-by: axel.siebenborn@sap.com, martin.doerr@sap.com
author | goetz |
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date | Mon, 10 Mar 2014 12:58:02 +0100 |
parents | abec000618bf |
children | 4ca6dc0799b6 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2013, 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 #include "precompiled.hpp" |
26 #include "c1/c1_FrameMap.hpp" | |
27 #include "c1/c1_LIR.hpp" | |
28 #include "runtime/sharedRuntime.hpp" | |
29 #ifdef TARGET_ARCH_x86 | |
30 # include "vmreg_x86.inline.hpp" | |
31 #endif | |
32 #ifdef TARGET_ARCH_sparc | |
33 # include "vmreg_sparc.inline.hpp" | |
34 #endif | |
35 #ifdef TARGET_ARCH_zero | |
36 # include "vmreg_zero.inline.hpp" | |
37 #endif | |
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38 #ifdef TARGET_ARCH_arm |
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39 # include "vmreg_arm.inline.hpp" |
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40 #endif |
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41 #ifdef TARGET_ARCH_ppc |
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42 # include "vmreg_ppc.inline.hpp" |
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43 #endif |
0 | 44 |
45 | |
46 | |
47 //----------------------------------------------------- | |
48 | |
49 // Convert method signature into an array of BasicTypes for the arguments | |
50 BasicTypeArray* FrameMap::signature_type_array_for(const ciMethod* method) { | |
51 ciSignature* sig = method->signature(); | |
52 BasicTypeList* sta = new BasicTypeList(method->arg_size()); | |
53 // add receiver, if any | |
54 if (!method->is_static()) sta->append(T_OBJECT); | |
55 // add remaining arguments | |
56 for (int i = 0; i < sig->count(); i++) { | |
57 ciType* type = sig->type_at(i); | |
58 BasicType t = type->basic_type(); | |
59 if (t == T_ARRAY) { | |
60 t = T_OBJECT; | |
61 } | |
62 sta->append(t); | |
63 } | |
64 // done | |
65 return sta; | |
66 } | |
67 | |
68 | |
69 CallingConvention* FrameMap::java_calling_convention(const BasicTypeArray* signature, bool outgoing) { | |
70 // compute the size of the arguments first. The signature array | |
71 // that java_calling_convention takes includes a T_VOID after double | |
72 // work items but our signatures do not. | |
73 int i; | |
74 int sizeargs = 0; | |
75 for (i = 0; i < signature->length(); i++) { | |
76 sizeargs += type2size[signature->at(i)]; | |
77 } | |
78 | |
79 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, sizeargs); | |
80 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); | |
81 int sig_index = 0; | |
82 for (i = 0; i < sizeargs; i++, sig_index++) { | |
83 sig_bt[i] = signature->at(sig_index); | |
84 if (sig_bt[i] == T_LONG || sig_bt[i] == T_DOUBLE) { | |
85 sig_bt[i + 1] = T_VOID; | |
86 i++; | |
87 } | |
88 } | |
89 | |
90 intptr_t out_preserve = SharedRuntime::java_calling_convention(sig_bt, regs, sizeargs, outgoing); | |
91 LIR_OprList* args = new LIR_OprList(signature->length()); | |
92 for (i = 0; i < sizeargs;) { | |
93 BasicType t = sig_bt[i]; | |
94 assert(t != T_VOID, "should be skipping these"); | |
95 LIR_Opr opr = map_to_opr(t, regs + i, outgoing); | |
96 args->append(opr); | |
97 if (opr->is_address()) { | |
98 LIR_Address* addr = opr->as_address_ptr(); | |
99 assert(addr->disp() == (int)addr->disp(), "out of range value"); | |
2093 | 100 out_preserve = MAX2(out_preserve, (intptr_t)(addr->disp() - STACK_BIAS) / 4); |
0 | 101 } |
102 i += type2size[t]; | |
103 } | |
104 assert(args->length() == signature->length(), "size mismatch"); | |
105 out_preserve += SharedRuntime::out_preserve_stack_slots(); | |
106 | |
107 if (outgoing) { | |
108 // update the space reserved for arguments. | |
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109 update_reserved_argument_area_size(out_preserve * BytesPerWord); |
0 | 110 } |
111 return new CallingConvention(args, out_preserve); | |
112 } | |
113 | |
114 | |
115 CallingConvention* FrameMap::c_calling_convention(const BasicTypeArray* signature) { | |
116 // compute the size of the arguments first. The signature array | |
117 // that java_calling_convention takes includes a T_VOID after double | |
118 // work items but our signatures do not. | |
119 int i; | |
120 int sizeargs = 0; | |
121 for (i = 0; i < signature->length(); i++) { | |
122 sizeargs += type2size[signature->at(i)]; | |
123 } | |
124 | |
125 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, sizeargs); | |
126 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); | |
127 int sig_index = 0; | |
128 for (i = 0; i < sizeargs; i++, sig_index++) { | |
129 sig_bt[i] = signature->at(sig_index); | |
130 if (sig_bt[i] == T_LONG || sig_bt[i] == T_DOUBLE) { | |
131 sig_bt[i + 1] = T_VOID; | |
132 i++; | |
133 } | |
134 } | |
135 | |
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136 intptr_t out_preserve = SharedRuntime::c_calling_convention(sig_bt, regs, NULL, sizeargs); |
0 | 137 LIR_OprList* args = new LIR_OprList(signature->length()); |
138 for (i = 0; i < sizeargs;) { | |
139 BasicType t = sig_bt[i]; | |
140 assert(t != T_VOID, "should be skipping these"); | |
141 | |
142 // C calls are always outgoing | |
143 bool outgoing = true; | |
144 LIR_Opr opr = map_to_opr(t, regs + i, outgoing); | |
145 // they might be of different types if for instance floating point | |
146 // values are passed in cpu registers, but the sizes must match. | |
147 assert(type2size[opr->type()] == type2size[t], "type mismatch"); | |
148 args->append(opr); | |
149 if (opr->is_address()) { | |
150 LIR_Address* addr = opr->as_address_ptr(); | |
2093 | 151 out_preserve = MAX2(out_preserve, (intptr_t)(addr->disp() - STACK_BIAS) / 4); |
0 | 152 } |
153 i += type2size[t]; | |
154 } | |
155 assert(args->length() == signature->length(), "size mismatch"); | |
156 out_preserve += SharedRuntime::out_preserve_stack_slots(); | |
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157 update_reserved_argument_area_size(out_preserve * BytesPerWord); |
0 | 158 return new CallingConvention(args, out_preserve); |
159 } | |
160 | |
161 | |
162 //-------------------------------------------------------- | |
163 // FrameMap | |
164 //-------------------------------------------------------- | |
165 | |
166 bool FrameMap::_init_done = false; | |
167 Register FrameMap::_cpu_rnr2reg [FrameMap::nof_cpu_regs]; | |
168 int FrameMap::_cpu_reg2rnr [FrameMap::nof_cpu_regs]; | |
169 | |
170 | |
171 FrameMap::FrameMap(ciMethod* method, int monitors, int reserved_argument_area_size) { | |
1584 | 172 assert(_init_done, "should already be completed"); |
0 | 173 |
174 _framesize = -1; | |
175 _num_spills = -1; | |
176 | |
177 assert(monitors >= 0, "not set"); | |
178 _num_monitors = monitors; | |
179 assert(reserved_argument_area_size >= 0, "not set"); | |
180 _reserved_argument_area_size = MAX2(4, reserved_argument_area_size) * BytesPerWord; | |
181 | |
182 _argcount = method->arg_size(); | |
183 _argument_locations = new intArray(_argcount, -1); | |
184 _incoming_arguments = java_calling_convention(signature_type_array_for(method), false); | |
185 _oop_map_arg_count = _incoming_arguments->reserved_stack_slots(); | |
186 | |
187 int java_index = 0; | |
188 for (int i = 0; i < _incoming_arguments->length(); i++) { | |
189 LIR_Opr opr = _incoming_arguments->at(i); | |
190 if (opr->is_address()) { | |
191 LIR_Address* address = opr->as_address_ptr(); | |
192 _argument_locations->at_put(java_index, address->disp() - STACK_BIAS); | |
193 _incoming_arguments->args()->at_put(i, LIR_OprFact::stack(java_index, as_BasicType(as_ValueType(address->type())))); | |
194 } | |
195 java_index += type2size[opr->type()]; | |
196 } | |
197 | |
198 } | |
199 | |
200 | |
201 bool FrameMap::finalize_frame(int nof_slots) { | |
202 assert(nof_slots >= 0, "must be positive"); | |
203 assert(_num_spills == -1, "can only be set once"); | |
204 _num_spills = nof_slots; | |
205 assert(_framesize == -1, "should only be calculated once"); | |
206 _framesize = round_to(in_bytes(sp_offset_for_monitor_base(0)) + | |
207 _num_monitors * sizeof(BasicObjectLock) + | |
208 sizeof(intptr_t) + // offset of deopt orig pc | |
209 frame_pad_in_bytes, | |
210 StackAlignmentInBytes) / 4; | |
211 int java_index = 0; | |
212 for (int i = 0; i < _incoming_arguments->length(); i++) { | |
213 LIR_Opr opr = _incoming_arguments->at(i); | |
214 if (opr->is_stack()) { | |
215 _argument_locations->at_put(java_index, in_bytes(framesize_in_bytes()) + | |
216 _argument_locations->at(java_index)); | |
217 } | |
218 java_index += type2size[opr->type()]; | |
219 } | |
220 // make sure it's expressible on the platform | |
221 return validate_frame(); | |
222 } | |
223 | |
224 VMReg FrameMap::sp_offset2vmreg(ByteSize offset) const { | |
225 int offset_in_bytes = in_bytes(offset); | |
226 assert(offset_in_bytes % 4 == 0, "must be multiple of 4 bytes"); | |
227 assert(offset_in_bytes / 4 < framesize() + oop_map_arg_count(), "out of range"); | |
228 return VMRegImpl::stack2reg(offset_in_bytes / 4); | |
229 } | |
230 | |
231 | |
232 bool FrameMap::location_for_sp_offset(ByteSize byte_offset_from_sp, | |
233 Location::Type loc_type, | |
234 Location* loc) const { | |
235 int offset = in_bytes(byte_offset_from_sp); | |
236 assert(offset >= 0, "incorrect offset"); | |
237 if (!Location::legal_offset_in_bytes(offset)) { | |
238 return false; | |
239 } | |
240 Location tmp_loc = Location::new_stk_loc(loc_type, offset); | |
241 *loc = tmp_loc; | |
242 return true; | |
243 } | |
244 | |
245 | |
246 bool FrameMap::locations_for_slot (int index, Location::Type loc_type, | |
247 Location* loc, Location* second) const { | |
248 ByteSize offset_from_sp = sp_offset_for_slot(index); | |
249 if (!location_for_sp_offset(offset_from_sp, loc_type, loc)) { | |
250 return false; | |
251 } | |
252 if (second != NULL) { | |
253 // two word item | |
254 offset_from_sp = offset_from_sp + in_ByteSize(4); | |
255 return location_for_sp_offset(offset_from_sp, loc_type, second); | |
256 } | |
257 return true; | |
258 } | |
259 | |
260 ////////////////////// | |
261 // Public accessors // | |
262 ////////////////////// | |
263 | |
264 | |
265 ByteSize FrameMap::sp_offset_for_slot(const int index) const { | |
266 if (index < argcount()) { | |
267 int offset = _argument_locations->at(index); | |
268 assert(offset != -1, "not a memory argument"); | |
269 assert(offset >= framesize() * 4, "argument inside of frame"); | |
270 return in_ByteSize(offset); | |
271 } | |
272 ByteSize offset = sp_offset_for_spill(index - argcount()); | |
273 assert(in_bytes(offset) < framesize() * 4, "spill outside of frame"); | |
274 return offset; | |
275 } | |
276 | |
277 | |
278 ByteSize FrameMap::sp_offset_for_double_slot(const int index) const { | |
279 ByteSize offset = sp_offset_for_slot(index); | |
280 if (index >= argcount()) { | |
281 assert(in_bytes(offset) + 4 < framesize() * 4, "spill outside of frame"); | |
282 } | |
283 return offset; | |
284 } | |
285 | |
286 | |
287 ByteSize FrameMap::sp_offset_for_spill(const int index) const { | |
288 assert(index >= 0 && index < _num_spills, "out of range"); | |
289 int offset = round_to(first_available_sp_in_frame + _reserved_argument_area_size, sizeof(double)) + | |
290 index * spill_slot_size_in_bytes; | |
291 return in_ByteSize(offset); | |
292 } | |
293 | |
294 ByteSize FrameMap::sp_offset_for_monitor_base(const int index) const { | |
295 int end_of_spills = round_to(first_available_sp_in_frame + _reserved_argument_area_size, sizeof(double)) + | |
296 _num_spills * spill_slot_size_in_bytes; | |
304 | 297 int offset = (int) round_to(end_of_spills, HeapWordSize) + index * sizeof(BasicObjectLock); |
0 | 298 return in_ByteSize(offset); |
299 } | |
300 | |
301 ByteSize FrameMap::sp_offset_for_monitor_lock(int index) const { | |
302 check_monitor_index(index); | |
303 return sp_offset_for_monitor_base(index) + in_ByteSize(BasicObjectLock::lock_offset_in_bytes());; | |
304 } | |
305 | |
306 ByteSize FrameMap::sp_offset_for_monitor_object(int index) const { | |
307 check_monitor_index(index); | |
308 return sp_offset_for_monitor_base(index) + in_ByteSize(BasicObjectLock::obj_offset_in_bytes()); | |
309 } | |
310 | |
311 | |
312 // For OopMaps, map a local variable or spill index to an VMReg. | |
313 // This is the offset from sp() in the frame of the slot for the index, | |
314 // skewed by SharedInfo::stack0 to indicate a stack location (vs.a register.) | |
315 // | |
316 // C ABI size + | |
317 // framesize + framesize + | |
318 // stack0 stack0 stack0 0 <- VMReg->value() | |
319 // | | | <registers> | | |
320 // ..........|..............|..............|.............| | |
321 // 0 1 2 3 | <C ABI area> | 4 5 6 ...... | <- local indices | |
322 // ^ ^ sp() | |
323 // | | | |
324 // arguments non-argument locals | |
325 | |
326 | |
327 VMReg FrameMap::regname(LIR_Opr opr) const { | |
328 if (opr->is_single_cpu()) { | |
329 assert(!opr->is_virtual(), "should not see virtual registers here"); | |
330 return opr->as_register()->as_VMReg(); | |
331 } else if (opr->is_single_stack()) { | |
332 return sp_offset2vmreg(sp_offset_for_slot(opr->single_stack_ix())); | |
333 } else if (opr->is_address()) { | |
334 LIR_Address* addr = opr->as_address_ptr(); | |
335 assert(addr->base() == stack_pointer(), "sp based addressing only"); | |
336 return sp_offset2vmreg(in_ByteSize(addr->index()->as_jint())); | |
337 } | |
338 ShouldNotReachHere(); | |
339 return VMRegImpl::Bad(); | |
340 } | |
341 | |
342 | |
343 | |
344 | |
345 // ------------ extra spill slots --------------- |