Mercurial > hg > graal-compiler
annotate src/share/vm/c1/c1_FrameMap.cpp @ 2182:9569fdf936ff
Made merge compile.
author | Thomas Wuerthinger <wuerthinger@ssw.jku.at> |
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date | Wed, 16 Feb 2011 14:21:52 +0100 |
parents | 7514897db238 |
children | b92c45f2bc75 |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 2000, 2010, 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 | |
0 | 38 |
39 | |
40 | |
41 //----------------------------------------------------- | |
42 | |
43 // Convert method signature into an array of BasicTypes for the arguments | |
44 BasicTypeArray* FrameMap::signature_type_array_for(const ciMethod* method) { | |
45 ciSignature* sig = method->signature(); | |
46 BasicTypeList* sta = new BasicTypeList(method->arg_size()); | |
47 // add receiver, if any | |
48 if (!method->is_static()) sta->append(T_OBJECT); | |
49 // add remaining arguments | |
50 for (int i = 0; i < sig->count(); i++) { | |
51 ciType* type = sig->type_at(i); | |
52 BasicType t = type->basic_type(); | |
53 if (t == T_ARRAY) { | |
54 t = T_OBJECT; | |
55 } | |
56 sta->append(t); | |
57 } | |
58 // done | |
59 return sta; | |
60 } | |
61 | |
62 | |
63 CallingConvention* FrameMap::java_calling_convention(const BasicTypeArray* signature, bool outgoing) { | |
64 // compute the size of the arguments first. The signature array | |
65 // that java_calling_convention takes includes a T_VOID after double | |
66 // work items but our signatures do not. | |
67 int i; | |
68 int sizeargs = 0; | |
69 for (i = 0; i < signature->length(); i++) { | |
70 sizeargs += type2size[signature->at(i)]; | |
71 } | |
72 | |
73 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, sizeargs); | |
74 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); | |
75 int sig_index = 0; | |
76 for (i = 0; i < sizeargs; i++, sig_index++) { | |
77 sig_bt[i] = signature->at(sig_index); | |
78 if (sig_bt[i] == T_LONG || sig_bt[i] == T_DOUBLE) { | |
79 sig_bt[i + 1] = T_VOID; | |
80 i++; | |
81 } | |
82 } | |
83 | |
84 intptr_t out_preserve = SharedRuntime::java_calling_convention(sig_bt, regs, sizeargs, outgoing); | |
85 LIR_OprList* args = new LIR_OprList(signature->length()); | |
86 for (i = 0; i < sizeargs;) { | |
87 BasicType t = sig_bt[i]; | |
88 assert(t != T_VOID, "should be skipping these"); | |
89 | |
90 LIR_Opr opr = map_to_opr(t, regs + i, outgoing); | |
91 args->append(opr); | |
92 if (opr->is_address()) { | |
93 LIR_Address* addr = opr->as_address_ptr(); | |
94 assert(addr->disp() == (int)addr->disp(), "out of range value"); | |
2093 | 95 out_preserve = MAX2(out_preserve, (intptr_t)(addr->disp() - STACK_BIAS) / 4); |
0 | 96 } |
97 i += type2size[t]; | |
98 } | |
99 assert(args->length() == signature->length(), "size mismatch"); | |
100 out_preserve += SharedRuntime::out_preserve_stack_slots(); | |
101 | |
102 if (outgoing) { | |
103 // update the space reserved for arguments. | |
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104 update_reserved_argument_area_size(out_preserve * BytesPerWord); |
0 | 105 } |
106 return new CallingConvention(args, out_preserve); | |
107 } | |
108 | |
109 | |
110 CallingConvention* FrameMap::c_calling_convention(const BasicTypeArray* signature) { | |
111 // compute the size of the arguments first. The signature array | |
112 // that java_calling_convention takes includes a T_VOID after double | |
113 // work items but our signatures do not. | |
114 int i; | |
115 int sizeargs = 0; | |
116 for (i = 0; i < signature->length(); i++) { | |
117 sizeargs += type2size[signature->at(i)]; | |
118 } | |
119 | |
120 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, sizeargs); | |
121 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); | |
122 int sig_index = 0; | |
123 for (i = 0; i < sizeargs; i++, sig_index++) { | |
124 sig_bt[i] = signature->at(sig_index); | |
125 if (sig_bt[i] == T_LONG || sig_bt[i] == T_DOUBLE) { | |
126 sig_bt[i + 1] = T_VOID; | |
127 i++; | |
128 } | |
129 } | |
130 | |
131 intptr_t out_preserve = SharedRuntime::c_calling_convention(sig_bt, regs, sizeargs); | |
132 LIR_OprList* args = new LIR_OprList(signature->length()); | |
133 for (i = 0; i < sizeargs;) { | |
134 BasicType t = sig_bt[i]; | |
135 assert(t != T_VOID, "should be skipping these"); | |
136 | |
137 // C calls are always outgoing | |
138 bool outgoing = true; | |
139 LIR_Opr opr = map_to_opr(t, regs + i, outgoing); | |
140 // they might be of different types if for instance floating point | |
141 // values are passed in cpu registers, but the sizes must match. | |
142 assert(type2size[opr->type()] == type2size[t], "type mismatch"); | |
143 args->append(opr); | |
144 if (opr->is_address()) { | |
145 LIR_Address* addr = opr->as_address_ptr(); | |
2093 | 146 out_preserve = MAX2(out_preserve, (intptr_t)(addr->disp() - STACK_BIAS) / 4); |
0 | 147 } |
148 i += type2size[t]; | |
149 } | |
150 assert(args->length() == signature->length(), "size mismatch"); | |
151 out_preserve += SharedRuntime::out_preserve_stack_slots(); | |
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152 update_reserved_argument_area_size(out_preserve * BytesPerWord); |
0 | 153 return new CallingConvention(args, out_preserve); |
154 } | |
155 | |
156 | |
157 //-------------------------------------------------------- | |
158 // FrameMap | |
159 //-------------------------------------------------------- | |
160 | |
161 bool FrameMap::_init_done = false; | |
162 Register FrameMap::_cpu_rnr2reg [FrameMap::nof_cpu_regs]; | |
163 int FrameMap::_cpu_reg2rnr [FrameMap::nof_cpu_regs]; | |
164 | |
165 | |
166 FrameMap::FrameMap(ciMethod* method, int monitors, int reserved_argument_area_size) { | |
1584 | 167 assert(_init_done, "should already be completed"); |
0 | 168 |
169 _framesize = -1; | |
170 _num_spills = -1; | |
171 | |
172 assert(monitors >= 0, "not set"); | |
173 _num_monitors = monitors; | |
174 assert(reserved_argument_area_size >= 0, "not set"); | |
175 _reserved_argument_area_size = MAX2(4, reserved_argument_area_size) * BytesPerWord; | |
176 | |
177 _argcount = method->arg_size(); | |
178 _argument_locations = new intArray(_argcount, -1); | |
179 _incoming_arguments = java_calling_convention(signature_type_array_for(method), false); | |
180 _oop_map_arg_count = _incoming_arguments->reserved_stack_slots(); | |
181 | |
182 int java_index = 0; | |
183 for (int i = 0; i < _incoming_arguments->length(); i++) { | |
184 LIR_Opr opr = _incoming_arguments->at(i); | |
185 if (opr->is_address()) { | |
186 LIR_Address* address = opr->as_address_ptr(); | |
187 _argument_locations->at_put(java_index, address->disp() - STACK_BIAS); | |
188 _incoming_arguments->args()->at_put(i, LIR_OprFact::stack(java_index, as_BasicType(as_ValueType(address->type())))); | |
189 } | |
190 java_index += type2size[opr->type()]; | |
191 } | |
192 | |
193 } | |
194 | |
195 | |
196 bool FrameMap::finalize_frame(int nof_slots) { | |
197 assert(nof_slots >= 0, "must be positive"); | |
198 assert(_num_spills == -1, "can only be set once"); | |
199 _num_spills = nof_slots; | |
200 assert(_framesize == -1, "should only be calculated once"); | |
201 _framesize = round_to(in_bytes(sp_offset_for_monitor_base(0)) + | |
202 _num_monitors * sizeof(BasicObjectLock) + | |
203 sizeof(intptr_t) + // offset of deopt orig pc | |
204 frame_pad_in_bytes, | |
205 StackAlignmentInBytes) / 4; | |
206 int java_index = 0; | |
207 for (int i = 0; i < _incoming_arguments->length(); i++) { | |
208 LIR_Opr opr = _incoming_arguments->at(i); | |
209 if (opr->is_stack()) { | |
210 _argument_locations->at_put(java_index, in_bytes(framesize_in_bytes()) + | |
211 _argument_locations->at(java_index)); | |
212 } | |
213 java_index += type2size[opr->type()]; | |
214 } | |
215 // make sure it's expressible on the platform | |
216 return validate_frame(); | |
217 } | |
218 | |
219 VMReg FrameMap::sp_offset2vmreg(ByteSize offset) const { | |
220 int offset_in_bytes = in_bytes(offset); | |
221 assert(offset_in_bytes % 4 == 0, "must be multiple of 4 bytes"); | |
222 assert(offset_in_bytes / 4 < framesize() + oop_map_arg_count(), "out of range"); | |
223 return VMRegImpl::stack2reg(offset_in_bytes / 4); | |
224 } | |
225 | |
226 | |
227 bool FrameMap::location_for_sp_offset(ByteSize byte_offset_from_sp, | |
228 Location::Type loc_type, | |
229 Location* loc) const { | |
230 int offset = in_bytes(byte_offset_from_sp); | |
231 assert(offset >= 0, "incorrect offset"); | |
232 if (!Location::legal_offset_in_bytes(offset)) { | |
233 return false; | |
234 } | |
235 Location tmp_loc = Location::new_stk_loc(loc_type, offset); | |
236 *loc = tmp_loc; | |
237 return true; | |
238 } | |
239 | |
240 | |
241 bool FrameMap::locations_for_slot (int index, Location::Type loc_type, | |
242 Location* loc, Location* second) const { | |
243 ByteSize offset_from_sp = sp_offset_for_slot(index); | |
244 if (!location_for_sp_offset(offset_from_sp, loc_type, loc)) { | |
245 return false; | |
246 } | |
247 if (second != NULL) { | |
248 // two word item | |
249 offset_from_sp = offset_from_sp + in_ByteSize(4); | |
250 return location_for_sp_offset(offset_from_sp, loc_type, second); | |
251 } | |
252 return true; | |
253 } | |
254 | |
255 ////////////////////// | |
256 // Public accessors // | |
257 ////////////////////// | |
258 | |
259 | |
260 ByteSize FrameMap::sp_offset_for_slot(const int index) const { | |
261 if (index < argcount()) { | |
262 int offset = _argument_locations->at(index); | |
263 assert(offset != -1, "not a memory argument"); | |
264 assert(offset >= framesize() * 4, "argument inside of frame"); | |
265 return in_ByteSize(offset); | |
266 } | |
267 ByteSize offset = sp_offset_for_spill(index - argcount()); | |
268 assert(in_bytes(offset) < framesize() * 4, "spill outside of frame"); | |
269 return offset; | |
270 } | |
271 | |
272 | |
273 ByteSize FrameMap::sp_offset_for_double_slot(const int index) const { | |
274 ByteSize offset = sp_offset_for_slot(index); | |
275 if (index >= argcount()) { | |
276 assert(in_bytes(offset) + 4 < framesize() * 4, "spill outside of frame"); | |
277 } | |
278 return offset; | |
279 } | |
280 | |
281 | |
282 ByteSize FrameMap::sp_offset_for_spill(const int index) const { | |
283 assert(index >= 0 && index < _num_spills, "out of range"); | |
284 int offset = round_to(first_available_sp_in_frame + _reserved_argument_area_size, sizeof(double)) + | |
285 index * spill_slot_size_in_bytes; | |
286 return in_ByteSize(offset); | |
287 } | |
288 | |
289 ByteSize FrameMap::sp_offset_for_monitor_base(const int index) const { | |
290 int end_of_spills = round_to(first_available_sp_in_frame + _reserved_argument_area_size, sizeof(double)) + | |
291 _num_spills * spill_slot_size_in_bytes; | |
304 | 292 int offset = (int) round_to(end_of_spills, HeapWordSize) + index * sizeof(BasicObjectLock); |
0 | 293 return in_ByteSize(offset); |
294 } | |
295 | |
296 ByteSize FrameMap::sp_offset_for_monitor_lock(int index) const { | |
297 check_monitor_index(index); | |
298 return sp_offset_for_monitor_base(index) + in_ByteSize(BasicObjectLock::lock_offset_in_bytes());; | |
299 } | |
300 | |
301 ByteSize FrameMap::sp_offset_for_monitor_object(int index) const { | |
302 check_monitor_index(index); | |
303 return sp_offset_for_monitor_base(index) + in_ByteSize(BasicObjectLock::obj_offset_in_bytes()); | |
304 } | |
305 | |
306 void FrameMap::print_frame_layout() const { | |
307 int svar; | |
308 tty->print_cr("#####################################"); | |
309 tty->print_cr("Frame size in words %d", framesize()); | |
310 | |
311 if( _num_monitors > 0) { | |
312 tty->print_cr("monitor [0]:%d | [%2d]:%d", | |
313 in_bytes(sp_offset_for_monitor_base(0)), | |
314 in_bytes(sp_offset_for_monitor_base(_num_monitors))); | |
315 } | |
316 if( _num_spills > 0) { | |
317 svar = _num_spills - 1; | |
318 if(svar == 0) | |
319 tty->print_cr("spill [0]:%d", in_bytes(sp_offset_for_spill(0))); | |
320 else | |
321 tty->print_cr("spill [0]:%d | [%2d]:%d", in_bytes(sp_offset_for_spill(0)), | |
322 svar, | |
323 in_bytes(sp_offset_for_spill(svar))); | |
324 } | |
325 } | |
326 | |
327 | |
328 // For OopMaps, map a local variable or spill index to an VMReg. | |
329 // This is the offset from sp() in the frame of the slot for the index, | |
330 // skewed by SharedInfo::stack0 to indicate a stack location (vs.a register.) | |
331 // | |
332 // C ABI size + | |
333 // framesize + framesize + | |
334 // stack0 stack0 stack0 0 <- VMReg->value() | |
335 // | | | <registers> | | |
336 // ..........|..............|..............|.............| | |
337 // 0 1 2 3 | <C ABI area> | 4 5 6 ...... | <- local indices | |
338 // ^ ^ sp() | |
339 // | | | |
340 // arguments non-argument locals | |
341 | |
342 | |
343 VMReg FrameMap::regname(LIR_Opr opr) const { | |
344 if (opr->is_single_cpu()) { | |
345 assert(!opr->is_virtual(), "should not see virtual registers here"); | |
346 return opr->as_register()->as_VMReg(); | |
347 } else if (opr->is_single_stack()) { | |
348 return sp_offset2vmreg(sp_offset_for_slot(opr->single_stack_ix())); | |
349 } else if (opr->is_address()) { | |
350 LIR_Address* addr = opr->as_address_ptr(); | |
351 assert(addr->base() == stack_pointer(), "sp based addressing only"); | |
352 return sp_offset2vmreg(in_ByteSize(addr->index()->as_jint())); | |
353 } | |
354 ShouldNotReachHere(); | |
355 return VMRegImpl::Bad(); | |
356 } | |
357 | |
358 | |
359 | |
360 | |
361 // ------------ extra spill slots --------------- |