Mercurial > hg > graal-compiler
annotate src/share/vm/c1/c1_FrameMap.cpp @ 1846:d55217dc206f
6829194: JSR 292 needs to support compressed oops
Reviewed-by: kvn, jrose
author | twisti |
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date | Mon, 11 Oct 2010 04:18:58 -0700 |
parents | 126ea7725993 |
children | f95d63e2154a |
rev | line source |
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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. | |
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93 update_reserved_argument_area_size(out_preserve * BytesPerWord); |
0 | 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(); | |
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141 update_reserved_argument_area_size(out_preserve * BytesPerWord); |
0 | 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) { | |
1584 | 156 assert(_init_done, "should already be completed"); |
0 | 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 --------------- |