0
|
1 /*
|
337
|
2 * Copyright 2000-2008 Sun Microsystems, Inc. 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 *
|
|
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
20 * CA 95054 USA or visit www.sun.com if you need additional information or
|
|
21 * have any questions.
|
|
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 ---------------
|