Mercurial > hg > graal-compiler
annotate src/cpu/ppc/vm/interp_masm_ppc_64.cpp @ 20508:f6bde7889409
8059592: Recent bugfixes in ppc64 port.
Reviewed-by: kvn
author | goetz |
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date | Thu, 02 Oct 2014 09:32:53 +0200 |
parents | b384ba33c9a0 |
children | c5e86c5cd22e |
rev | line source |
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1 /* |
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2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
17804 | 3 * Copyright 2012, 2014 SAP AG. All rights reserved. |
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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5 * |
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6 * This code is free software; you can redistribute it and/or modify it |
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7 * under the terms of the GNU General Public License version 2 only, as |
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8 * published by the Free Software Foundation. |
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9 * |
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10 * This code is distributed in the hope that it will be useful, but WITHOUT |
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 * version 2 for more details (a copy is included in the LICENSE file that |
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14 * accompanied this code). |
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15 * |
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16 * You should have received a copy of the GNU General Public License version |
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17 * 2 along with this work; if not, write to the Free Software Foundation, |
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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19 * |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
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23 * |
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24 */ |
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25 |
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26 |
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27 #include "precompiled.hpp" |
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28 #include "asm/macroAssembler.inline.hpp" |
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29 #include "interp_masm_ppc_64.hpp" |
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30 #include "interpreter/interpreterRuntime.hpp" |
17804 | 31 #include "prims/jvmtiThreadState.hpp" |
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32 |
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33 #ifdef PRODUCT |
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34 #define BLOCK_COMMENT(str) // nothing |
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35 #else |
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36 #define BLOCK_COMMENT(str) block_comment(str) |
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37 #endif |
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38 |
14445 | 39 void InterpreterMacroAssembler::null_check_throw(Register a, int offset, Register temp_reg) { |
40 #ifdef CC_INTERP | |
41 address exception_entry = StubRoutines::throw_NullPointerException_at_call_entry(); | |
42 #else | |
43 address exception_entry = Interpreter::throw_NullPointerException_entry(); | |
44 #endif | |
45 MacroAssembler::null_check_throw(a, offset, temp_reg, exception_entry); | |
46 } | |
47 | |
17804 | 48 void InterpreterMacroAssembler::branch_to_entry(address entry, Register Rscratch) { |
49 assert(entry, "Entry must have been generated by now"); | |
50 if (is_within_range_of_b(entry, pc())) { | |
51 b(entry); | |
52 } else { | |
53 load_const_optimized(Rscratch, entry, R0); | |
54 mtctr(Rscratch); | |
55 bctr(); | |
56 } | |
57 } | |
58 | |
59 #ifndef CC_INTERP | |
60 | |
61 void InterpreterMacroAssembler::dispatch_next(TosState state, int bcp_incr) { | |
62 Register bytecode = R12_scratch2; | |
63 if (bcp_incr != 0) { | |
64 lbzu(bytecode, bcp_incr, R14_bcp); | |
65 } else { | |
66 lbz(bytecode, 0, R14_bcp); | |
67 } | |
68 | |
69 dispatch_Lbyte_code(state, bytecode, Interpreter::dispatch_table(state)); | |
70 } | |
71 | |
72 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
73 // Load current bytecode. | |
74 Register bytecode = R12_scratch2; | |
75 lbz(bytecode, 0, R14_bcp); | |
76 dispatch_Lbyte_code(state, bytecode, table); | |
77 } | |
78 | |
79 // Dispatch code executed in the prolog of a bytecode which does not do it's | |
80 // own dispatch. The dispatch address is computed and placed in R24_dispatch_addr. | |
81 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int bcp_incr) { | |
82 Register bytecode = R12_scratch2; | |
83 lbz(bytecode, bcp_incr, R14_bcp); | |
84 | |
85 load_dispatch_table(R24_dispatch_addr, Interpreter::dispatch_table(state)); | |
86 | |
87 sldi(bytecode, bytecode, LogBytesPerWord); | |
88 ldx(R24_dispatch_addr, R24_dispatch_addr, bytecode); | |
89 } | |
90 | |
91 // Dispatch code executed in the epilog of a bytecode which does not do it's | |
92 // own dispatch. The dispatch address in R24_dispatch_addr is used for the | |
93 // dispatch. | |
94 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int bcp_incr) { | |
95 mtctr(R24_dispatch_addr); | |
96 addi(R14_bcp, R14_bcp, bcp_incr); | |
97 bctr(); | |
98 } | |
99 | |
100 void InterpreterMacroAssembler::check_and_handle_popframe(Register scratch_reg) { | |
101 assert(scratch_reg != R0, "can't use R0 as scratch_reg here"); | |
102 if (JvmtiExport::can_pop_frame()) { | |
103 Label L; | |
104 | |
105 // Check the "pending popframe condition" flag in the current thread. | |
106 lwz(scratch_reg, in_bytes(JavaThread::popframe_condition_offset()), R16_thread); | |
107 | |
108 // Initiate popframe handling only if it is not already being | |
109 // processed. If the flag has the popframe_processing bit set, it | |
110 // means that this code is called *during* popframe handling - we | |
111 // don't want to reenter. | |
112 andi_(R0, scratch_reg, JavaThread::popframe_pending_bit); | |
113 beq(CCR0, L); | |
114 | |
115 andi_(R0, scratch_reg, JavaThread::popframe_processing_bit); | |
116 bne(CCR0, L); | |
117 | |
118 // Call the Interpreter::remove_activation_preserving_args_entry() | |
119 // func to get the address of the same-named entrypoint in the | |
120 // generated interpreter code. | |
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121 #if defined(ABI_ELFv2) |
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122 call_c(CAST_FROM_FN_PTR(address, |
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123 Interpreter::remove_activation_preserving_args_entry), |
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124 relocInfo::none); |
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125 #else |
17804 | 126 call_c(CAST_FROM_FN_PTR(FunctionDescriptor*, |
127 Interpreter::remove_activation_preserving_args_entry), | |
128 relocInfo::none); | |
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129 #endif |
17804 | 130 |
131 // Jump to Interpreter::_remove_activation_preserving_args_entry. | |
132 mtctr(R3_RET); | |
133 bctr(); | |
134 | |
135 align(32, 12); | |
136 bind(L); | |
137 } | |
138 } | |
139 | |
140 void InterpreterMacroAssembler::check_and_handle_earlyret(Register scratch_reg) { | |
141 const Register Rthr_state_addr = scratch_reg; | |
142 if (JvmtiExport::can_force_early_return()) { | |
143 Label Lno_early_ret; | |
144 ld(Rthr_state_addr, in_bytes(JavaThread::jvmti_thread_state_offset()), R16_thread); | |
145 cmpdi(CCR0, Rthr_state_addr, 0); | |
146 beq(CCR0, Lno_early_ret); | |
147 | |
148 lwz(R0, in_bytes(JvmtiThreadState::earlyret_state_offset()), Rthr_state_addr); | |
149 cmpwi(CCR0, R0, JvmtiThreadState::earlyret_pending); | |
150 bne(CCR0, Lno_early_ret); | |
151 | |
152 // Jump to Interpreter::_earlyret_entry. | |
153 lwz(R3_ARG1, in_bytes(JvmtiThreadState::earlyret_tos_offset()), Rthr_state_addr); | |
154 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry)); | |
155 mtlr(R3_RET); | |
156 blr(); | |
157 | |
158 align(32, 12); | |
159 bind(Lno_early_ret); | |
160 } | |
161 } | |
162 | |
163 void InterpreterMacroAssembler::load_earlyret_value(TosState state, Register Rscratch1) { | |
164 const Register RjvmtiState = Rscratch1; | |
165 const Register Rscratch2 = R0; | |
166 | |
167 ld(RjvmtiState, in_bytes(JavaThread::jvmti_thread_state_offset()), R16_thread); | |
168 li(Rscratch2, 0); | |
169 | |
170 switch (state) { | |
171 case atos: ld(R17_tos, in_bytes(JvmtiThreadState::earlyret_oop_offset()), RjvmtiState); | |
172 std(Rscratch2, in_bytes(JvmtiThreadState::earlyret_oop_offset()), RjvmtiState); | |
173 break; | |
174 case ltos: ld(R17_tos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
175 break; | |
176 case btos: // fall through | |
177 case ctos: // fall through | |
178 case stos: // fall through | |
179 case itos: lwz(R17_tos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
180 break; | |
181 case ftos: lfs(F15_ftos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
182 break; | |
183 case dtos: lfd(F15_ftos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
184 break; | |
185 case vtos: break; | |
186 default : ShouldNotReachHere(); | |
187 } | |
188 | |
189 // Clean up tos value in the jvmti thread state. | |
190 std(Rscratch2, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
191 // Set tos state field to illegal value. | |
192 li(Rscratch2, ilgl); | |
193 stw(Rscratch2, in_bytes(JvmtiThreadState::earlyret_tos_offset()), RjvmtiState); | |
194 } | |
195 | |
196 // Common code to dispatch and dispatch_only. | |
197 // Dispatch value in Lbyte_code and increment Lbcp. | |
198 | |
199 void InterpreterMacroAssembler::load_dispatch_table(Register dst, address* table) { | |
200 address table_base = (address)Interpreter::dispatch_table((TosState)0); | |
201 intptr_t table_offs = (intptr_t)table - (intptr_t)table_base; | |
202 if (is_simm16(table_offs)) { | |
203 addi(dst, R25_templateTableBase, (int)table_offs); | |
204 } else { | |
205 load_const_optimized(dst, table, R0); | |
206 } | |
207 } | |
208 | |
209 void InterpreterMacroAssembler::dispatch_Lbyte_code(TosState state, Register bytecode, address* table, bool verify) { | |
210 if (verify) { | |
211 unimplemented("dispatch_Lbyte_code: verify"); // See Sparc Implementation to implement this | |
212 } | |
213 | |
214 #ifdef FAST_DISPATCH | |
215 unimplemented("dispatch_Lbyte_code FAST_DISPATCH"); | |
216 #else | |
217 assert_different_registers(bytecode, R11_scratch1); | |
218 | |
219 // Calc dispatch table address. | |
220 load_dispatch_table(R11_scratch1, table); | |
221 | |
222 sldi(R12_scratch2, bytecode, LogBytesPerWord); | |
223 ldx(R11_scratch1, R11_scratch1, R12_scratch2); | |
224 | |
225 // Jump off! | |
226 mtctr(R11_scratch1); | |
227 bctr(); | |
228 #endif | |
229 } | |
230 | |
231 void InterpreterMacroAssembler::load_receiver(Register Rparam_count, Register Rrecv_dst) { | |
232 sldi(Rrecv_dst, Rparam_count, Interpreter::logStackElementSize); | |
233 ldx(Rrecv_dst, Rrecv_dst, R15_esp); | |
234 } | |
235 | |
236 // helpers for expression stack | |
237 | |
238 void InterpreterMacroAssembler::pop_i(Register r) { | |
239 lwzu(r, Interpreter::stackElementSize, R15_esp); | |
240 } | |
241 | |
242 void InterpreterMacroAssembler::pop_ptr(Register r) { | |
243 ldu(r, Interpreter::stackElementSize, R15_esp); | |
244 } | |
245 | |
246 void InterpreterMacroAssembler::pop_l(Register r) { | |
247 ld(r, Interpreter::stackElementSize, R15_esp); | |
248 addi(R15_esp, R15_esp, 2 * Interpreter::stackElementSize); | |
249 } | |
250 | |
251 void InterpreterMacroAssembler::pop_f(FloatRegister f) { | |
252 lfsu(f, Interpreter::stackElementSize, R15_esp); | |
253 } | |
254 | |
255 void InterpreterMacroAssembler::pop_d(FloatRegister f) { | |
256 lfd(f, Interpreter::stackElementSize, R15_esp); | |
257 addi(R15_esp, R15_esp, 2 * Interpreter::stackElementSize); | |
258 } | |
259 | |
260 void InterpreterMacroAssembler::push_i(Register r) { | |
261 stw(r, 0, R15_esp); | |
262 addi(R15_esp, R15_esp, - Interpreter::stackElementSize ); | |
263 } | |
264 | |
265 void InterpreterMacroAssembler::push_ptr(Register r) { | |
266 std(r, 0, R15_esp); | |
267 addi(R15_esp, R15_esp, - Interpreter::stackElementSize ); | |
268 } | |
269 | |
270 void InterpreterMacroAssembler::push_l(Register r) { | |
271 std(r, - Interpreter::stackElementSize, R15_esp); | |
272 addi(R15_esp, R15_esp, - 2 * Interpreter::stackElementSize ); | |
273 } | |
274 | |
275 void InterpreterMacroAssembler::push_f(FloatRegister f) { | |
276 stfs(f, 0, R15_esp); | |
277 addi(R15_esp, R15_esp, - Interpreter::stackElementSize ); | |
278 } | |
279 | |
280 void InterpreterMacroAssembler::push_d(FloatRegister f) { | |
281 stfd(f, - Interpreter::stackElementSize, R15_esp); | |
282 addi(R15_esp, R15_esp, - 2 * Interpreter::stackElementSize ); | |
283 } | |
284 | |
285 void InterpreterMacroAssembler::push_2ptrs(Register first, Register second) { | |
286 std(first, 0, R15_esp); | |
287 std(second, -Interpreter::stackElementSize, R15_esp); | |
288 addi(R15_esp, R15_esp, - 2 * Interpreter::stackElementSize ); | |
289 } | |
290 | |
291 void InterpreterMacroAssembler::push_l_pop_d(Register l, FloatRegister d) { | |
292 std(l, 0, R15_esp); | |
293 lfd(d, 0, R15_esp); | |
294 } | |
295 | |
296 void InterpreterMacroAssembler::push_d_pop_l(FloatRegister d, Register l) { | |
297 stfd(d, 0, R15_esp); | |
298 ld(l, 0, R15_esp); | |
299 } | |
300 | |
301 void InterpreterMacroAssembler::push(TosState state) { | |
302 switch (state) { | |
303 case atos: push_ptr(); break; | |
304 case btos: | |
305 case ctos: | |
306 case stos: | |
307 case itos: push_i(); break; | |
308 case ltos: push_l(); break; | |
309 case ftos: push_f(); break; | |
310 case dtos: push_d(); break; | |
311 case vtos: /* nothing to do */ break; | |
312 default : ShouldNotReachHere(); | |
313 } | |
314 } | |
315 | |
316 void InterpreterMacroAssembler::pop(TosState state) { | |
317 switch (state) { | |
318 case atos: pop_ptr(); break; | |
319 case btos: | |
320 case ctos: | |
321 case stos: | |
322 case itos: pop_i(); break; | |
323 case ltos: pop_l(); break; | |
324 case ftos: pop_f(); break; | |
325 case dtos: pop_d(); break; | |
326 case vtos: /* nothing to do */ break; | |
327 default : ShouldNotReachHere(); | |
328 } | |
329 verify_oop(R17_tos, state); | |
330 } | |
331 | |
332 void InterpreterMacroAssembler::empty_expression_stack() { | |
333 addi(R15_esp, R26_monitor, - Interpreter::stackElementSize); | |
334 } | |
335 | |
336 void InterpreterMacroAssembler::get_2_byte_integer_at_bcp(int bcp_offset, | |
337 Register Rdst, | |
338 signedOrNot is_signed) { | |
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339 #if defined(VM_LITTLE_ENDIAN) |
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340 if (bcp_offset) { |
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341 load_const_optimized(Rdst, bcp_offset); |
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342 lhbrx(Rdst, R14_bcp, Rdst); |
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343 } else { |
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344 lhbrx(Rdst, R14_bcp); |
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345 } |
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346 if (is_signed == Signed) { |
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347 extsh(Rdst, Rdst); |
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348 } |
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349 #else |
17804 | 350 // Read Java big endian format. |
351 if (is_signed == Signed) { | |
352 lha(Rdst, bcp_offset, R14_bcp); | |
353 } else { | |
354 lhz(Rdst, bcp_offset, R14_bcp); | |
355 } | |
356 #endif | |
357 } | |
358 | |
359 void InterpreterMacroAssembler::get_4_byte_integer_at_bcp(int bcp_offset, | |
360 Register Rdst, | |
361 signedOrNot is_signed) { | |
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362 #if defined(VM_LITTLE_ENDIAN) |
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363 if (bcp_offset) { |
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364 load_const_optimized(Rdst, bcp_offset); |
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365 lwbrx(Rdst, R14_bcp, Rdst); |
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366 } else { |
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367 lwbrx(Rdst, R14_bcp); |
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368 } |
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369 if (is_signed == Signed) { |
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370 extsw(Rdst, Rdst); |
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371 } |
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372 #else |
17804 | 373 // Read Java big endian format. |
374 if (bcp_offset & 3) { // Offset unaligned? | |
375 load_const_optimized(Rdst, bcp_offset); | |
376 if (is_signed == Signed) { | |
377 lwax(Rdst, R14_bcp, Rdst); | |
378 } else { | |
379 lwzx(Rdst, R14_bcp, Rdst); | |
380 } | |
381 } else { | |
382 if (is_signed == Signed) { | |
383 lwa(Rdst, bcp_offset, R14_bcp); | |
384 } else { | |
385 lwz(Rdst, bcp_offset, R14_bcp); | |
386 } | |
387 } | |
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388 #endif |
17804 | 389 } |
390 | |
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391 |
17804 | 392 // Load the constant pool cache index from the bytecode stream. |
393 // | |
394 // Kills / writes: | |
395 // - Rdst, Rscratch | |
396 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register Rdst, int bcp_offset, size_t index_size) { | |
397 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); | |
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398 // Cache index is always in the native format, courtesy of Rewriter. |
17804 | 399 if (index_size == sizeof(u2)) { |
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400 lhz(Rdst, bcp_offset, R14_bcp); |
17804 | 401 } else if (index_size == sizeof(u4)) { |
402 assert(EnableInvokeDynamic, "giant index used only for JSR 292"); | |
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403 if (bcp_offset & 3) { |
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404 load_const_optimized(Rdst, bcp_offset); |
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405 lwax(Rdst, R14_bcp, Rdst); |
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406 } else { |
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407 lwa(Rdst, bcp_offset, R14_bcp); |
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408 } |
17804 | 409 assert(ConstantPool::decode_invokedynamic_index(~123) == 123, "else change next line"); |
410 nand(Rdst, Rdst, Rdst); // convert to plain index | |
411 } else if (index_size == sizeof(u1)) { | |
412 lbz(Rdst, bcp_offset, R14_bcp); | |
413 } else { | |
414 ShouldNotReachHere(); | |
415 } | |
416 // Rdst now contains cp cache index. | |
417 } | |
418 | |
419 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, int bcp_offset, size_t index_size) { | |
420 get_cache_index_at_bcp(cache, bcp_offset, index_size); | |
421 sldi(cache, cache, exact_log2(in_words(ConstantPoolCacheEntry::size()) * BytesPerWord)); | |
422 add(cache, R27_constPoolCache, cache); | |
423 } | |
424 | |
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425 // Load 4-byte signed or unsigned integer in Java format (that is, big-endian format) |
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426 // from (Rsrc)+offset. |
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427 void InterpreterMacroAssembler::get_u4(Register Rdst, Register Rsrc, int offset, |
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428 signedOrNot is_signed) { |
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429 #if defined(VM_LITTLE_ENDIAN) |
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430 if (offset) { |
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431 load_const_optimized(Rdst, offset); |
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432 lwbrx(Rdst, Rdst, Rsrc); |
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433 } else { |
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434 lwbrx(Rdst, Rsrc); |
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435 } |
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436 if (is_signed == Signed) { |
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437 extsw(Rdst, Rdst); |
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438 } |
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439 #else |
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440 if (is_signed == Signed) { |
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441 lwa(Rdst, offset, Rsrc); |
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442 } else { |
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443 lwz(Rdst, offset, Rsrc); |
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444 } |
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445 #endif |
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446 } |
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447 |
17804 | 448 // Load object from cpool->resolved_references(index). |
449 void InterpreterMacroAssembler::load_resolved_reference_at_index(Register result, Register index) { | |
450 assert_different_registers(result, index); | |
451 get_constant_pool(result); | |
452 | |
453 // Convert from field index to resolved_references() index and from | |
454 // word index to byte offset. Since this is a java object, it can be compressed. | |
455 Register tmp = index; // reuse | |
456 sldi(tmp, index, LogBytesPerHeapOop); | |
457 // Load pointer for resolved_references[] objArray. | |
458 ld(result, ConstantPool::resolved_references_offset_in_bytes(), result); | |
459 // JNIHandles::resolve(result) | |
460 ld(result, 0, result); | |
461 #ifdef ASSERT | |
462 Label index_ok; | |
463 lwa(R0, arrayOopDesc::length_offset_in_bytes(), result); | |
464 sldi(R0, R0, LogBytesPerHeapOop); | |
465 cmpd(CCR0, tmp, R0); | |
466 blt(CCR0, index_ok); | |
467 stop("resolved reference index out of bounds", 0x09256); | |
468 bind(index_ok); | |
469 #endif | |
470 // Add in the index. | |
471 add(result, tmp, result); | |
472 load_heap_oop(result, arrayOopDesc::base_offset_in_bytes(T_OBJECT), result); | |
473 } | |
474 | |
475 // Generate a subtype check: branch to ok_is_subtype if sub_klass is | |
476 // a subtype of super_klass. Blows registers Rsub_klass, tmp1, tmp2. | |
477 void InterpreterMacroAssembler::gen_subtype_check(Register Rsub_klass, Register Rsuper_klass, Register Rtmp1, | |
478 Register Rtmp2, Register Rtmp3, Label &ok_is_subtype) { | |
479 // Profile the not-null value's klass. | |
480 profile_typecheck(Rsub_klass, Rtmp1, Rtmp2); | |
481 check_klass_subtype(Rsub_klass, Rsuper_klass, Rtmp1, Rtmp2, ok_is_subtype); | |
482 profile_typecheck_failed(Rtmp1, Rtmp2); | |
483 } | |
484 | |
485 void InterpreterMacroAssembler::generate_stack_overflow_check_with_compare_and_throw(Register Rmem_frame_size, Register Rscratch1) { | |
486 Label done; | |
487 sub(Rmem_frame_size, R1_SP, Rmem_frame_size); | |
488 ld(Rscratch1, thread_(stack_overflow_limit)); | |
489 cmpld(CCR0/*is_stack_overflow*/, Rmem_frame_size, Rscratch1); | |
490 bgt(CCR0/*is_stack_overflow*/, done); | |
491 | |
492 // Load target address of the runtime stub. | |
493 assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "generated in wrong order"); | |
494 load_const_optimized(Rscratch1, (StubRoutines::throw_StackOverflowError_entry()), R0); | |
495 mtctr(Rscratch1); | |
496 // Restore caller_sp. | |
497 #ifdef ASSERT | |
498 ld(Rscratch1, 0, R1_SP); | |
499 ld(R0, 0, R21_sender_SP); | |
500 cmpd(CCR0, R0, Rscratch1); | |
501 asm_assert_eq("backlink", 0x547); | |
502 #endif // ASSERT | |
503 mr(R1_SP, R21_sender_SP); | |
504 bctr(); | |
505 | |
506 align(32, 12); | |
507 bind(done); | |
508 } | |
509 | |
510 // Separate these two to allow for delay slot in middle. | |
511 // These are used to do a test and full jump to exception-throwing code. | |
512 | |
513 // Check that index is in range for array, then shift index by index_shift, | |
514 // and put arrayOop + shifted_index into res. | |
515 // Note: res is still shy of address by array offset into object. | |
516 | |
517 void InterpreterMacroAssembler::index_check_without_pop(Register Rarray, Register Rindex, int index_shift, Register Rtmp, Register Rres) { | |
518 // Check that index is in range for array, then shift index by index_shift, | |
519 // and put arrayOop + shifted_index into res. | |
520 // Note: res is still shy of address by array offset into object. | |
521 // Kills: | |
522 // - Rindex | |
523 // Writes: | |
524 // - Rres: Address that corresponds to the array index if check was successful. | |
525 verify_oop(Rarray); | |
526 const Register Rlength = R0; | |
527 const Register RsxtIndex = Rtmp; | |
528 Label LisNull, LnotOOR; | |
529 | |
530 // Array nullcheck | |
531 if (!ImplicitNullChecks) { | |
532 cmpdi(CCR0, Rarray, 0); | |
533 beq(CCR0, LisNull); | |
534 } else { | |
535 null_check_throw(Rarray, arrayOopDesc::length_offset_in_bytes(), /*temp*/RsxtIndex); | |
536 } | |
537 | |
538 // Rindex might contain garbage in upper bits (remember that we don't sign extend | |
539 // during integer arithmetic operations). So kill them and put value into same register | |
540 // where ArrayIndexOutOfBounds would expect the index in. | |
541 rldicl(RsxtIndex, Rindex, 0, 32); // zero extend 32 bit -> 64 bit | |
542 | |
543 // Index check | |
544 lwz(Rlength, arrayOopDesc::length_offset_in_bytes(), Rarray); | |
545 cmplw(CCR0, Rindex, Rlength); | |
546 sldi(RsxtIndex, RsxtIndex, index_shift); | |
547 blt(CCR0, LnotOOR); | |
548 load_dispatch_table(Rtmp, (address*)Interpreter::_throw_ArrayIndexOutOfBoundsException_entry); | |
549 mtctr(Rtmp); | |
550 bctr(); | |
551 | |
552 if (!ImplicitNullChecks) { | |
553 bind(LisNull); | |
554 load_dispatch_table(Rtmp, (address*)Interpreter::_throw_NullPointerException_entry); | |
555 mtctr(Rtmp); | |
556 bctr(); | |
557 } | |
558 | |
559 align(32, 16); | |
560 bind(LnotOOR); | |
561 | |
562 // Calc address | |
563 add(Rres, RsxtIndex, Rarray); | |
564 } | |
565 | |
566 void InterpreterMacroAssembler::index_check(Register array, Register index, int index_shift, Register tmp, Register res) { | |
567 // pop array | |
568 pop_ptr(array); | |
569 | |
570 // check array | |
571 index_check_without_pop(array, index, index_shift, tmp, res); | |
572 } | |
573 | |
574 void InterpreterMacroAssembler::get_const(Register Rdst) { | |
575 ld(Rdst, in_bytes(Method::const_offset()), R19_method); | |
576 } | |
577 | |
578 void InterpreterMacroAssembler::get_constant_pool(Register Rdst) { | |
579 get_const(Rdst); | |
580 ld(Rdst, in_bytes(ConstMethod::constants_offset()), Rdst); | |
581 } | |
582 | |
583 void InterpreterMacroAssembler::get_constant_pool_cache(Register Rdst) { | |
584 get_constant_pool(Rdst); | |
585 ld(Rdst, ConstantPool::cache_offset_in_bytes(), Rdst); | |
586 } | |
587 | |
588 void InterpreterMacroAssembler::get_cpool_and_tags(Register Rcpool, Register Rtags) { | |
589 get_constant_pool(Rcpool); | |
590 ld(Rtags, ConstantPool::tags_offset_in_bytes(), Rcpool); | |
591 } | |
592 | |
593 // Unlock if synchronized method. | |
594 // | |
595 // Unlock the receiver if this is a synchronized method. | |
596 // Unlock any Java monitors from synchronized blocks. | |
597 // | |
598 // If there are locked Java monitors | |
599 // If throw_monitor_exception | |
600 // throws IllegalMonitorStateException | |
601 // Else if install_monitor_exception | |
602 // installs IllegalMonitorStateException | |
603 // Else | |
604 // no error processing | |
605 void InterpreterMacroAssembler::unlock_if_synchronized_method(TosState state, | |
606 bool throw_monitor_exception, | |
607 bool install_monitor_exception) { | |
608 Label Lunlocked, Lno_unlock; | |
609 { | |
610 Register Rdo_not_unlock_flag = R11_scratch1; | |
611 Register Raccess_flags = R12_scratch2; | |
612 | |
613 // Check if synchronized method or unlocking prevented by | |
614 // JavaThread::do_not_unlock_if_synchronized flag. | |
615 lbz(Rdo_not_unlock_flag, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread); | |
616 lwz(Raccess_flags, in_bytes(Method::access_flags_offset()), R19_method); | |
617 li(R0, 0); | |
618 stb(R0, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread); // reset flag | |
619 | |
620 push(state); | |
621 | |
622 // Skip if we don't have to unlock. | |
623 rldicl_(R0, Raccess_flags, 64-JVM_ACC_SYNCHRONIZED_BIT, 63); // Extract bit and compare to 0. | |
624 beq(CCR0, Lunlocked); | |
625 | |
626 cmpwi(CCR0, Rdo_not_unlock_flag, 0); | |
627 bne(CCR0, Lno_unlock); | |
628 } | |
629 | |
630 // Unlock | |
631 { | |
632 Register Rmonitor_base = R11_scratch1; | |
633 | |
634 Label Lunlock; | |
635 // If it's still locked, everything is ok, unlock it. | |
636 ld(Rmonitor_base, 0, R1_SP); | |
637 addi(Rmonitor_base, Rmonitor_base, - (frame::ijava_state_size + frame::interpreter_frame_monitor_size_in_bytes())); // Monitor base | |
638 | |
639 ld(R0, BasicObjectLock::obj_offset_in_bytes(), Rmonitor_base); | |
640 cmpdi(CCR0, R0, 0); | |
641 bne(CCR0, Lunlock); | |
642 | |
643 // If it's already unlocked, throw exception. | |
644 if (throw_monitor_exception) { | |
645 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
646 should_not_reach_here(); | |
647 } else { | |
648 if (install_monitor_exception) { | |
649 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
650 b(Lunlocked); | |
651 } | |
652 } | |
653 | |
654 bind(Lunlock); | |
655 unlock_object(Rmonitor_base); | |
656 } | |
657 | |
658 // Check that all other monitors are unlocked. Throw IllegelMonitorState exception if not. | |
659 bind(Lunlocked); | |
660 { | |
661 Label Lexception, Lrestart; | |
662 Register Rcurrent_obj_addr = R11_scratch1; | |
663 const int delta = frame::interpreter_frame_monitor_size_in_bytes(); | |
664 assert((delta & LongAlignmentMask) == 0, "sizeof BasicObjectLock must be even number of doublewords"); | |
665 | |
666 bind(Lrestart); | |
667 // Set up search loop: Calc num of iterations. | |
668 { | |
669 Register Riterations = R12_scratch2; | |
670 Register Rmonitor_base = Rcurrent_obj_addr; | |
671 ld(Rmonitor_base, 0, R1_SP); | |
672 addi(Rmonitor_base, Rmonitor_base, - frame::ijava_state_size); // Monitor base | |
673 | |
674 subf_(Riterations, R26_monitor, Rmonitor_base); | |
675 ble(CCR0, Lno_unlock); | |
676 | |
677 addi(Rcurrent_obj_addr, Rmonitor_base, BasicObjectLock::obj_offset_in_bytes() - frame::interpreter_frame_monitor_size_in_bytes()); | |
678 // Check if any monitor is on stack, bail out if not | |
679 srdi(Riterations, Riterations, exact_log2(delta)); | |
680 mtctr(Riterations); | |
681 } | |
682 | |
683 // The search loop: Look for locked monitors. | |
684 { | |
685 const Register Rcurrent_obj = R0; | |
686 Label Lloop; | |
687 | |
688 ld(Rcurrent_obj, 0, Rcurrent_obj_addr); | |
689 addi(Rcurrent_obj_addr, Rcurrent_obj_addr, -delta); | |
690 bind(Lloop); | |
691 | |
692 // Check if current entry is used. | |
693 cmpdi(CCR0, Rcurrent_obj, 0); | |
694 bne(CCR0, Lexception); | |
695 // Preload next iteration's compare value. | |
696 ld(Rcurrent_obj, 0, Rcurrent_obj_addr); | |
697 addi(Rcurrent_obj_addr, Rcurrent_obj_addr, -delta); | |
698 bdnz(Lloop); | |
699 } | |
700 // Fell through: Everything's unlocked => finish. | |
701 b(Lno_unlock); | |
702 | |
703 // An object is still locked => need to throw exception. | |
704 bind(Lexception); | |
705 if (throw_monitor_exception) { | |
706 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
707 should_not_reach_here(); | |
708 } else { | |
709 // Stack unrolling. Unlock object and if requested, install illegal_monitor_exception. | |
710 // Unlock does not block, so don't have to worry about the frame. | |
711 Register Rmonitor_addr = R11_scratch1; | |
712 addi(Rmonitor_addr, Rcurrent_obj_addr, -BasicObjectLock::obj_offset_in_bytes() + delta); | |
713 unlock_object(Rmonitor_addr); | |
714 if (install_monitor_exception) { | |
715 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
716 } | |
717 b(Lrestart); | |
718 } | |
719 } | |
720 | |
721 align(32, 12); | |
722 bind(Lno_unlock); | |
723 pop(state); | |
724 } | |
725 | |
726 // Support function for remove_activation & Co. | |
727 void InterpreterMacroAssembler::merge_frames(Register Rsender_sp, Register return_pc, Register Rscratch1, Register Rscratch2) { | |
728 // Pop interpreter frame. | |
729 ld(Rscratch1, 0, R1_SP); // *SP | |
730 ld(Rsender_sp, _ijava_state_neg(sender_sp), Rscratch1); // top_frame_sp | |
731 ld(Rscratch2, 0, Rscratch1); // **SP | |
732 #ifdef ASSERT | |
733 { | |
734 Label Lok; | |
735 ld(R0, _ijava_state_neg(ijava_reserved), Rscratch1); | |
736 cmpdi(CCR0, R0, 0x5afe); | |
737 beq(CCR0, Lok); | |
738 stop("frame corrupted (remove activation)", 0x5afe); | |
739 bind(Lok); | |
740 } | |
741 #endif | |
742 if (return_pc!=noreg) { | |
743 ld(return_pc, _abi(lr), Rscratch1); // LR | |
744 } | |
745 | |
746 // Merge top frames. | |
747 subf(Rscratch1, R1_SP, Rsender_sp); // top_frame_sp - SP | |
748 stdux(Rscratch2, R1_SP, Rscratch1); // atomically set *(SP = top_frame_sp) = **SP | |
749 } | |
750 | |
751 // Remove activation. | |
752 // | |
753 // Unlock the receiver if this is a synchronized method. | |
754 // Unlock any Java monitors from synchronized blocks. | |
755 // Remove the activation from the stack. | |
756 // | |
757 // If there are locked Java monitors | |
758 // If throw_monitor_exception | |
759 // throws IllegalMonitorStateException | |
760 // Else if install_monitor_exception | |
761 // installs IllegalMonitorStateException | |
762 // Else | |
763 // no error processing | |
764 void InterpreterMacroAssembler::remove_activation(TosState state, | |
765 bool throw_monitor_exception, | |
766 bool install_monitor_exception) { | |
767 unlock_if_synchronized_method(state, throw_monitor_exception, install_monitor_exception); | |
768 | |
769 // Save result (push state before jvmti call and pop it afterwards) and notify jvmti. | |
770 notify_method_exit(false, state, NotifyJVMTI, true); | |
771 | |
772 verify_oop(R17_tos, state); | |
773 verify_thread(); | |
774 | |
775 merge_frames(/*top_frame_sp*/ R21_sender_SP, /*return_pc*/ R0, R11_scratch1, R12_scratch2); | |
776 mtlr(R0); | |
777 } | |
778 | |
779 #endif // !CC_INTERP | |
780 | |
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781 // Lock object |
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782 // |
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783 // Registers alive |
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784 // monitor - Address of the BasicObjectLock to be used for locking, |
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785 // which must be initialized with the object to lock. |
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786 // object - Address of the object to be locked. |
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787 // |
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788 void InterpreterMacroAssembler::lock_object(Register monitor, Register object) { |
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789 if (UseHeavyMonitors) { |
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790 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), |
14445 | 791 monitor, /*check_for_exceptions=*/true CC_INTERP_ONLY(&& false)); |
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792 } else { |
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793 // template code: |
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794 // |
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795 // markOop displaced_header = obj->mark().set_unlocked(); |
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796 // monitor->lock()->set_displaced_header(displaced_header); |
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797 // if (Atomic::cmpxchg_ptr(/*ex=*/monitor, /*addr*/obj->mark_addr(), /*cmp*/displaced_header) == displaced_header) { |
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798 // // We stored the monitor address into the object's mark word. |
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799 // } else if (THREAD->is_lock_owned((address)displaced_header)) |
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800 // // Simple recursive case. |
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801 // monitor->lock()->set_displaced_header(NULL); |
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802 // } else { |
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803 // // Slow path. |
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804 // InterpreterRuntime::monitorenter(THREAD, monitor); |
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805 // } |
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806 |
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807 const Register displaced_header = R7_ARG5; |
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808 const Register object_mark_addr = R8_ARG6; |
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809 const Register current_header = R9_ARG7; |
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810 const Register tmp = R10_ARG8; |
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811 |
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812 Label done; |
14445 | 813 Label cas_failed, slow_case; |
14408
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814 |
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815 assert_different_registers(displaced_header, object_mark_addr, current_header, tmp); |
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816 |
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817 // markOop displaced_header = obj->mark().set_unlocked(); |
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818 |
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819 // Load markOop from object into displaced_header. |
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820 ld(displaced_header, oopDesc::mark_offset_in_bytes(), object); |
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821 |
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822 if (UseBiasedLocking) { |
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823 biased_locking_enter(CCR0, object, displaced_header, tmp, current_header, done, &slow_case); |
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824 } |
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|
825 |
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826 // Set displaced_header to be (markOop of object | UNLOCK_VALUE). |
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827 ori(displaced_header, displaced_header, markOopDesc::unlocked_value); |
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828 |
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829 // monitor->lock()->set_displaced_header(displaced_header); |
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830 |
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831 // Initialize the box (Must happen before we update the object mark!). |
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832 std(displaced_header, BasicObjectLock::lock_offset_in_bytes() + |
14445 | 833 BasicLock::displaced_header_offset_in_bytes(), monitor); |
14408
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834 |
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835 // if (Atomic::cmpxchg_ptr(/*ex=*/monitor, /*addr*/obj->mark_addr(), /*cmp*/displaced_header) == displaced_header) { |
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836 |
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837 // Store stack address of the BasicObjectLock (this is monitor) into object. |
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838 addi(object_mark_addr, object, oopDesc::mark_offset_in_bytes()); |
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839 |
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840 // Must fence, otherwise, preceding store(s) may float below cmpxchg. |
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841 // CmpxchgX sets CCR0 to cmpX(current, displaced). |
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842 fence(); // TODO: replace by MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq ? |
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843 cmpxchgd(/*flag=*/CCR0, |
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844 /*current_value=*/current_header, |
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845 /*compare_value=*/displaced_header, /*exchange_value=*/monitor, |
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846 /*where=*/object_mark_addr, |
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847 MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq, |
14445 | 848 MacroAssembler::cmpxchgx_hint_acquire_lock(), |
849 noreg, | |
850 &cas_failed); | |
14408
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851 |
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852 // If the compare-and-exchange succeeded, then we found an unlocked |
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853 // object and we have now locked it. |
14445 | 854 b(done); |
855 bind(cas_failed); | |
14408
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856 |
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857 // } else if (THREAD->is_lock_owned((address)displaced_header)) |
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858 // // Simple recursive case. |
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859 // monitor->lock()->set_displaced_header(NULL); |
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|
860 |
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861 // We did not see an unlocked object so try the fast recursive case. |
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|
862 |
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|
863 // Check if owner is self by comparing the value in the markOop of object |
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864 // (current_header) with the stack pointer. |
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865 sub(current_header, current_header, R1_SP); |
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|
866 |
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867 assert(os::vm_page_size() > 0xfff, "page size too small - change the constant"); |
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868 load_const_optimized(tmp, |
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869 (address) (~(os::vm_page_size()-1) | |
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|
870 markOopDesc::lock_mask_in_place)); |
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|
871 |
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872 and_(R0/*==0?*/, current_header, tmp); |
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873 // If condition is true we are done and hence we can store 0 in the displaced |
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874 // header indicating it is a recursive lock. |
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875 bne(CCR0, slow_case); |
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876 release(); |
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877 std(R0/*==0!*/, BasicObjectLock::lock_offset_in_bytes() + |
14445 | 878 BasicLock::displaced_header_offset_in_bytes(), monitor); |
14408
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879 b(done); |
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880 |
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881 // } else { |
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882 // // Slow path. |
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883 // InterpreterRuntime::monitorenter(THREAD, monitor); |
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|
884 |
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885 // None of the above fast optimizations worked so we have to get into the |
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|
886 // slow case of monitor enter. |
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887 bind(slow_case); |
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888 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), |
14445 | 889 monitor, /*check_for_exceptions=*/true CC_INTERP_ONLY(&& false)); |
14408
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890 // } |
17804 | 891 align(32, 12); |
14408
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892 bind(done); |
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|
893 } |
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894 } |
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|
895 |
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|
896 // Unlocks an object. Used in monitorexit bytecode and remove_activation. |
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|
897 // |
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|
898 // Registers alive |
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899 // monitor - Address of the BasicObjectLock to be used for locking, |
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900 // which must be initialized with the object to lock. |
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901 // |
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|
902 // Throw IllegalMonitorException if object is not locked by current thread. |
14445 | 903 void InterpreterMacroAssembler::unlock_object(Register monitor, bool check_for_exceptions) { |
14408
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904 if (UseHeavyMonitors) { |
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905 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), |
17804 | 906 monitor, check_for_exceptions CC_INTERP_ONLY(&& false)); |
14408
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907 } else { |
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|
908 |
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|
909 // template code: |
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|
910 // |
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911 // if ((displaced_header = monitor->displaced_header()) == NULL) { |
17804 | 912 // // Recursive unlock. Mark the monitor unlocked by setting the object field to NULL. |
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913 // monitor->set_obj(NULL); |
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914 // } else if (Atomic::cmpxchg_ptr(displaced_header, obj->mark_addr(), monitor) == monitor) { |
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915 // // We swapped the unlocked mark in displaced_header into the object's mark word. |
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916 // monitor->set_obj(NULL); |
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917 // } else { |
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918 // // Slow path. |
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919 // InterpreterRuntime::monitorexit(THREAD, monitor); |
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920 // } |
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921 |
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922 const Register object = R7_ARG5; |
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923 const Register displaced_header = R8_ARG6; |
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924 const Register object_mark_addr = R9_ARG7; |
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925 const Register current_header = R10_ARG8; |
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926 |
14445 | 927 Label free_slot; |
14408
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928 Label slow_case; |
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929 |
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930 assert_different_registers(object, displaced_header, object_mark_addr, current_header); |
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931 |
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932 if (UseBiasedLocking) { |
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933 // The object address from the monitor is in object. |
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934 ld(object, BasicObjectLock::obj_offset_in_bytes(), monitor); |
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935 assert(oopDesc::mark_offset_in_bytes() == 0, "offset of _mark is not 0"); |
14445 | 936 biased_locking_exit(CCR0, object, displaced_header, free_slot); |
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937 } |
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938 |
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939 // Test first if we are in the fast recursive case. |
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940 ld(displaced_header, BasicObjectLock::lock_offset_in_bytes() + |
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941 BasicLock::displaced_header_offset_in_bytes(), monitor); |
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942 |
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943 // If the displaced header is zero, we have a recursive unlock. |
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944 cmpdi(CCR0, displaced_header, 0); |
14445 | 945 beq(CCR0, free_slot); // recursive unlock |
14408
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946 |
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947 // } else if (Atomic::cmpxchg_ptr(displaced_header, obj->mark_addr(), monitor) == monitor) { |
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948 // // We swapped the unlocked mark in displaced_header into the object's mark word. |
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949 // monitor->set_obj(NULL); |
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950 |
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951 // If we still have a lightweight lock, unlock the object and be done. |
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952 |
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953 // The object address from the monitor is in object. |
17804 | 954 if (!UseBiasedLocking) { ld(object, BasicObjectLock::obj_offset_in_bytes(), monitor); } |
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955 addi(object_mark_addr, object, oopDesc::mark_offset_in_bytes()); |
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956 |
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957 // We have the displaced header in displaced_header. If the lock is still |
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958 // lightweight, it will contain the monitor address and we'll store the |
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959 // displaced header back into the object's mark word. |
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960 // CmpxchgX sets CCR0 to cmpX(current, monitor). |
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961 cmpxchgd(/*flag=*/CCR0, |
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962 /*current_value=*/current_header, |
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963 /*compare_value=*/monitor, /*exchange_value=*/displaced_header, |
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964 /*where=*/object_mark_addr, |
14445 | 965 MacroAssembler::MemBarRel, |
966 MacroAssembler::cmpxchgx_hint_release_lock(), | |
967 noreg, | |
968 &slow_case); | |
969 b(free_slot); | |
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970 |
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971 // } else { |
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972 // // Slow path. |
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973 // InterpreterRuntime::monitorexit(THREAD, monitor); |
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974 |
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975 // The lock has been converted into a heavy lock and hence |
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976 // we need to get into the slow case. |
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977 bind(slow_case); |
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978 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), |
14445 | 979 monitor, check_for_exceptions CC_INTERP_ONLY(&& false)); |
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980 // } |
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981 |
14445 | 982 Label done; |
983 b(done); // Monitor register may be overwritten! Runtime has already freed the slot. | |
984 | |
985 // Exchange worked, do monitor->set_obj(NULL); | |
986 align(32, 12); | |
987 bind(free_slot); | |
988 li(R0, 0); | |
989 std(R0, BasicObjectLock::obj_offset_in_bytes(), monitor); | |
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990 bind(done); |
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991 } |
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992 } |
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993 |
17804 | 994 #ifndef CC_INTERP |
995 | |
996 // Load compiled (i2c) or interpreter entry when calling from interpreted and | |
997 // do the call. Centralized so that all interpreter calls will do the same actions. | |
998 // If jvmti single stepping is on for a thread we must not call compiled code. | |
999 // | |
1000 // Input: | |
1001 // - Rtarget_method: method to call | |
1002 // - Rret_addr: return address | |
1003 // - 2 scratch regs | |
1004 // | |
1005 void InterpreterMacroAssembler::call_from_interpreter(Register Rtarget_method, Register Rret_addr, Register Rscratch1, Register Rscratch2) { | |
1006 assert_different_registers(Rscratch1, Rscratch2, Rtarget_method, Rret_addr); | |
1007 // Assume we want to go compiled if available. | |
1008 const Register Rtarget_addr = Rscratch1; | |
1009 const Register Rinterp_only = Rscratch2; | |
1010 | |
1011 ld(Rtarget_addr, in_bytes(Method::from_interpreted_offset()), Rtarget_method); | |
1012 | |
1013 if (JvmtiExport::can_post_interpreter_events()) { | |
1014 lwz(Rinterp_only, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); | |
1015 | |
1016 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
1017 // compiled code in threads for which the event is enabled. Check here for | |
1018 // interp_only_mode if these events CAN be enabled. | |
1019 Label done; | |
1020 verify_thread(); | |
1021 cmpwi(CCR0, Rinterp_only, 0); | |
1022 beq(CCR0, done); | |
1023 ld(Rtarget_addr, in_bytes(Method::interpreter_entry_offset()), Rtarget_method); | |
1024 align(32, 12); | |
1025 bind(done); | |
1026 } | |
1027 | |
1028 #ifdef ASSERT | |
1029 { | |
1030 Label Lok; | |
1031 cmpdi(CCR0, Rtarget_addr, 0); | |
1032 bne(CCR0, Lok); | |
1033 stop("null entry point"); | |
1034 bind(Lok); | |
1035 } | |
1036 #endif // ASSERT | |
1037 | |
1038 mr(R21_sender_SP, R1_SP); | |
1039 | |
1040 // Calc a precise SP for the call. The SP value we calculated in | |
1041 // generate_fixed_frame() is based on the max_stack() value, so we would waste stack space | |
1042 // if esp is not max. Also, the i2c adapter extends the stack space without restoring | |
1043 // our pre-calced value, so repeating calls via i2c would result in stack overflow. | |
1044 // Since esp already points to an empty slot, we just have to sub 1 additional slot | |
1045 // to meet the abi scratch requirements. | |
1046 // The max_stack pointer will get restored by means of the GR_Lmax_stack local in | |
1047 // the return entry of the interpreter. | |
1048 addi(Rscratch2, R15_esp, Interpreter::stackElementSize - frame::abi_reg_args_size); | |
1049 clrrdi(Rscratch2, Rscratch2, exact_log2(frame::alignment_in_bytes)); // round towards smaller address | |
1050 resize_frame_absolute(Rscratch2, Rscratch2, R0); | |
1051 | |
1052 mr_if_needed(R19_method, Rtarget_method); | |
1053 mtctr(Rtarget_addr); | |
1054 mtlr(Rret_addr); | |
1055 | |
1056 save_interpreter_state(Rscratch2); | |
1057 #ifdef ASSERT | |
1058 ld(Rscratch1, _ijava_state_neg(top_frame_sp), Rscratch2); // Rscratch2 contains fp | |
1059 cmpd(CCR0, R21_sender_SP, Rscratch1); | |
1060 asm_assert_eq("top_frame_sp incorrect", 0x951); | |
1061 #endif | |
1062 | |
1063 bctr(); | |
1064 } | |
1065 | |
1066 // Set the method data pointer for the current bcp. | |
1067 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
1068 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1069 Label get_continue; | |
1070 ld(R28_mdx, in_bytes(Method::method_data_offset()), R19_method); | |
1071 test_method_data_pointer(get_continue); | |
1072 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), R19_method, R14_bcp); | |
1073 | |
1074 addi(R28_mdx, R28_mdx, in_bytes(MethodData::data_offset())); | |
1075 add(R28_mdx, R28_mdx, R3_RET); | |
1076 bind(get_continue); | |
1077 } | |
1078 | |
1079 // Test ImethodDataPtr. If it is null, continue at the specified label. | |
1080 void InterpreterMacroAssembler::test_method_data_pointer(Label& zero_continue) { | |
1081 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1082 cmpdi(CCR0, R28_mdx, 0); | |
1083 beq(CCR0, zero_continue); | |
1084 } | |
1085 | |
1086 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
1087 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1088 #ifdef ASSERT | |
1089 Label verify_continue; | |
1090 test_method_data_pointer(verify_continue); | |
1091 | |
1092 // If the mdp is valid, it will point to a DataLayout header which is | |
1093 // consistent with the bcp. The converse is highly probable also. | |
1094 lhz(R11_scratch1, in_bytes(DataLayout::bci_offset()), R28_mdx); | |
1095 ld(R12_scratch2, in_bytes(Method::const_offset()), R19_method); | |
1096 addi(R11_scratch1, R11_scratch1, in_bytes(ConstMethod::codes_offset())); | |
1097 add(R11_scratch1, R12_scratch2, R12_scratch2); | |
1098 cmpd(CCR0, R11_scratch1, R14_bcp); | |
1099 beq(CCR0, verify_continue); | |
1100 | |
1101 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp ), R19_method, R14_bcp, R28_mdx); | |
1102 | |
1103 bind(verify_continue); | |
1104 #endif | |
1105 } | |
1106 | |
1107 void InterpreterMacroAssembler::test_invocation_counter_for_mdp(Register invocation_count, | |
1108 Register Rscratch, | |
1109 Label &profile_continue) { | |
1110 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1111 // Control will flow to "profile_continue" if the counter is less than the | |
1112 // limit or if we call profile_method(). | |
1113 Label done; | |
1114 | |
1115 // If no method data exists, and the counter is high enough, make one. | |
1116 int ipl_offs = load_const_optimized(Rscratch, &InvocationCounter::InterpreterProfileLimit, R0, true); | |
1117 lwz(Rscratch, ipl_offs, Rscratch); | |
1118 | |
1119 cmpdi(CCR0, R28_mdx, 0); | |
1120 // Test to see if we should create a method data oop. | |
1121 cmpd(CCR1, Rscratch /* InterpreterProfileLimit */, invocation_count); | |
1122 bne(CCR0, done); | |
1123 bge(CCR1, profile_continue); | |
1124 | |
1125 // Build it now. | |
1126 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); | |
1127 set_method_data_pointer_for_bcp(); | |
1128 b(profile_continue); | |
1129 | |
1130 align(32, 12); | |
1131 bind(done); | |
1132 } | |
1133 | |
1134 void InterpreterMacroAssembler::test_backedge_count_for_osr(Register backedge_count, Register branch_bcp, Register Rtmp) { | |
1135 assert_different_registers(backedge_count, Rtmp, branch_bcp); | |
1136 assert(UseOnStackReplacement,"Must UseOnStackReplacement to test_backedge_count_for_osr"); | |
1137 | |
1138 Label did_not_overflow; | |
1139 Label overflow_with_error; | |
1140 | |
1141 int ibbl_offs = load_const_optimized(Rtmp, &InvocationCounter::InterpreterBackwardBranchLimit, R0, true); | |
1142 lwz(Rtmp, ibbl_offs, Rtmp); | |
1143 cmpw(CCR0, backedge_count, Rtmp); | |
1144 | |
1145 blt(CCR0, did_not_overflow); | |
1146 | |
1147 // When ProfileInterpreter is on, the backedge_count comes from the | |
1148 // methodDataOop, which value does not get reset on the call to | |
1149 // frequency_counter_overflow(). To avoid excessive calls to the overflow | |
1150 // routine while the method is being compiled, add a second test to make sure | |
1151 // the overflow function is called only once every overflow_frequency. | |
1152 if (ProfileInterpreter) { | |
1153 const int overflow_frequency = 1024; | |
1154 li(Rtmp, overflow_frequency-1); | |
1155 andr(Rtmp, Rtmp, backedge_count); | |
1156 cmpwi(CCR0, Rtmp, 0); | |
1157 bne(CCR0, did_not_overflow); | |
1158 } | |
1159 | |
1160 // Overflow in loop, pass branch bytecode. | |
1161 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), branch_bcp, true); | |
1162 | |
1163 // Was an OSR adapter generated? | |
1164 // O0 = osr nmethod | |
1165 cmpdi(CCR0, R3_RET, 0); | |
1166 beq(CCR0, overflow_with_error); | |
1167 | |
1168 // Has the nmethod been invalidated already? | |
1169 lwz(Rtmp, nmethod::entry_bci_offset(), R3_RET); | |
1170 cmpwi(CCR0, Rtmp, InvalidOSREntryBci); | |
1171 beq(CCR0, overflow_with_error); | |
1172 | |
1173 // Migrate the interpreter frame off of the stack. | |
1174 // We can use all registers because we will not return to interpreter from this point. | |
1175 | |
1176 // Save nmethod. | |
1177 const Register osr_nmethod = R31; | |
1178 mr(osr_nmethod, R3_RET); | |
1179 set_top_ijava_frame_at_SP_as_last_Java_frame(R1_SP, R11_scratch1); | |
1180 call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin), R16_thread); | |
1181 reset_last_Java_frame(); | |
1182 // OSR buffer is in ARG1 | |
1183 | |
1184 // Remove the interpreter frame. | |
1185 merge_frames(/*top_frame_sp*/ R21_sender_SP, /*return_pc*/ R0, R11_scratch1, R12_scratch2); | |
1186 | |
1187 // Jump to the osr code. | |
1188 ld(R11_scratch1, nmethod::osr_entry_point_offset(), osr_nmethod); | |
1189 mtlr(R0); | |
1190 mtctr(R11_scratch1); | |
1191 bctr(); | |
1192 | |
1193 align(32, 12); | |
1194 bind(overflow_with_error); | |
1195 bind(did_not_overflow); | |
1196 } | |
1197 | |
1198 // Store a value at some constant offset from the method data pointer. | |
1199 void InterpreterMacroAssembler::set_mdp_data_at(int constant, Register value) { | |
1200 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1201 | |
1202 std(value, constant, R28_mdx); | |
1203 } | |
1204 | |
1205 // Increment the value at some constant offset from the method data pointer. | |
1206 void InterpreterMacroAssembler::increment_mdp_data_at(int constant, | |
1207 Register counter_addr, | |
1208 Register Rbumped_count, | |
1209 bool decrement) { | |
1210 // Locate the counter at a fixed offset from the mdp: | |
1211 addi(counter_addr, R28_mdx, constant); | |
1212 increment_mdp_data_at(counter_addr, Rbumped_count, decrement); | |
1213 } | |
1214 | |
1215 // Increment the value at some non-fixed (reg + constant) offset from | |
1216 // the method data pointer. | |
1217 void InterpreterMacroAssembler::increment_mdp_data_at(Register reg, | |
1218 int constant, | |
1219 Register scratch, | |
1220 Register Rbumped_count, | |
1221 bool decrement) { | |
1222 // Add the constant to reg to get the offset. | |
1223 add(scratch, R28_mdx, reg); | |
1224 // Then calculate the counter address. | |
1225 addi(scratch, scratch, constant); | |
1226 increment_mdp_data_at(scratch, Rbumped_count, decrement); | |
1227 } | |
1228 | |
1229 void InterpreterMacroAssembler::increment_mdp_data_at(Register counter_addr, | |
1230 Register Rbumped_count, | |
1231 bool decrement) { | |
1232 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1233 | |
1234 // Load the counter. | |
1235 ld(Rbumped_count, 0, counter_addr); | |
1236 | |
1237 if (decrement) { | |
1238 // Decrement the register. Set condition codes. | |
1239 addi(Rbumped_count, Rbumped_count, - DataLayout::counter_increment); | |
1240 // Store the decremented counter, if it is still negative. | |
1241 std(Rbumped_count, 0, counter_addr); | |
1242 // Note: add/sub overflow check are not ported, since 64 bit | |
1243 // calculation should never overflow. | |
1244 } else { | |
1245 // Increment the register. Set carry flag. | |
1246 addi(Rbumped_count, Rbumped_count, DataLayout::counter_increment); | |
1247 // Store the incremented counter. | |
1248 std(Rbumped_count, 0, counter_addr); | |
1249 } | |
1250 } | |
1251 | |
1252 // Set a flag value at the current method data pointer position. | |
1253 void InterpreterMacroAssembler::set_mdp_flag_at(int flag_constant, | |
1254 Register scratch) { | |
1255 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1256 // Load the data header. | |
1257 lbz(scratch, in_bytes(DataLayout::flags_offset()), R28_mdx); | |
1258 // Set the flag. | |
1259 ori(scratch, scratch, flag_constant); | |
1260 // Store the modified header. | |
1261 stb(scratch, in_bytes(DataLayout::flags_offset()), R28_mdx); | |
1262 } | |
1263 | |
1264 // Test the location at some offset from the method data pointer. | |
1265 // If it is not equal to value, branch to the not_equal_continue Label. | |
1266 void InterpreterMacroAssembler::test_mdp_data_at(int offset, | |
1267 Register value, | |
1268 Label& not_equal_continue, | |
1269 Register test_out) { | |
1270 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1271 | |
1272 ld(test_out, offset, R28_mdx); | |
1273 cmpd(CCR0, value, test_out); | |
1274 bne(CCR0, not_equal_continue); | |
1275 } | |
1276 | |
1277 // Update the method data pointer by the displacement located at some fixed | |
1278 // offset from the method data pointer. | |
1279 void InterpreterMacroAssembler::update_mdp_by_offset(int offset_of_disp, | |
1280 Register scratch) { | |
1281 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1282 | |
1283 ld(scratch, offset_of_disp, R28_mdx); | |
1284 add(R28_mdx, scratch, R28_mdx); | |
1285 } | |
1286 | |
1287 // Update the method data pointer by the displacement located at the | |
1288 // offset (reg + offset_of_disp). | |
1289 void InterpreterMacroAssembler::update_mdp_by_offset(Register reg, | |
1290 int offset_of_disp, | |
1291 Register scratch) { | |
1292 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1293 | |
1294 add(scratch, reg, R28_mdx); | |
1295 ld(scratch, offset_of_disp, scratch); | |
1296 add(R28_mdx, scratch, R28_mdx); | |
1297 } | |
1298 | |
1299 // Update the method data pointer by a simple constant displacement. | |
1300 void InterpreterMacroAssembler::update_mdp_by_constant(int constant) { | |
1301 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1302 addi(R28_mdx, R28_mdx, constant); | |
1303 } | |
1304 | |
1305 // Update the method data pointer for a _ret bytecode whose target | |
1306 // was not among our cached targets. | |
1307 void InterpreterMacroAssembler::update_mdp_for_ret(TosState state, | |
1308 Register return_bci) { | |
1309 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1310 | |
1311 push(state); | |
1312 assert(return_bci->is_nonvolatile(), "need to protect return_bci"); | |
1313 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); | |
1314 pop(state); | |
1315 } | |
1316 | |
1317 // Increments the backedge counter. | |
1318 // Returns backedge counter + invocation counter in Rdst. | |
1319 void InterpreterMacroAssembler::increment_backedge_counter(const Register Rcounters, const Register Rdst, | |
1320 const Register Rtmp1, Register Rscratch) { | |
1321 assert(UseCompiler, "incrementing must be useful"); | |
1322 assert_different_registers(Rdst, Rtmp1); | |
1323 const Register invocation_counter = Rtmp1; | |
1324 const Register counter = Rdst; | |
1325 // TODO ppc port assert(4 == InvocationCounter::sz_counter(), "unexpected field size."); | |
1326 | |
1327 // Load backedge counter. | |
1328 lwz(counter, in_bytes(MethodCounters::backedge_counter_offset()) + | |
1329 in_bytes(InvocationCounter::counter_offset()), Rcounters); | |
1330 // Load invocation counter. | |
1331 lwz(invocation_counter, in_bytes(MethodCounters::invocation_counter_offset()) + | |
1332 in_bytes(InvocationCounter::counter_offset()), Rcounters); | |
1333 | |
1334 // Add the delta to the backedge counter. | |
1335 addi(counter, counter, InvocationCounter::count_increment); | |
1336 | |
1337 // Mask the invocation counter. | |
1338 li(Rscratch, InvocationCounter::count_mask_value); | |
1339 andr(invocation_counter, invocation_counter, Rscratch); | |
1340 | |
1341 // Store new counter value. | |
1342 stw(counter, in_bytes(MethodCounters::backedge_counter_offset()) + | |
1343 in_bytes(InvocationCounter::counter_offset()), Rcounters); | |
1344 // Return invocation counter + backedge counter. | |
1345 add(counter, counter, invocation_counter); | |
1346 } | |
1347 | |
1348 // Count a taken branch in the bytecodes. | |
1349 void InterpreterMacroAssembler::profile_taken_branch(Register scratch, Register bumped_count) { | |
1350 if (ProfileInterpreter) { | |
1351 Label profile_continue; | |
1352 | |
1353 // If no method data exists, go to profile_continue. | |
1354 test_method_data_pointer(profile_continue); | |
1355 | |
1356 // We are taking a branch. Increment the taken count. | |
1357 increment_mdp_data_at(in_bytes(JumpData::taken_offset()), scratch, bumped_count); | |
1358 | |
1359 // The method data pointer needs to be updated to reflect the new target. | |
1360 update_mdp_by_offset(in_bytes(JumpData::displacement_offset()), scratch); | |
1361 bind (profile_continue); | |
1362 } | |
1363 } | |
1364 | |
1365 // Count a not-taken branch in the bytecodes. | |
1366 void InterpreterMacroAssembler::profile_not_taken_branch(Register scratch1, Register scratch2) { | |
1367 if (ProfileInterpreter) { | |
1368 Label profile_continue; | |
1369 | |
1370 // If no method data exists, go to profile_continue. | |
1371 test_method_data_pointer(profile_continue); | |
1372 | |
1373 // We are taking a branch. Increment the not taken count. | |
1374 increment_mdp_data_at(in_bytes(BranchData::not_taken_offset()), scratch1, scratch2); | |
1375 | |
1376 // The method data pointer needs to be updated to correspond to the | |
1377 // next bytecode. | |
1378 update_mdp_by_constant(in_bytes(BranchData::branch_data_size())); | |
1379 bind (profile_continue); | |
1380 } | |
1381 } | |
1382 | |
1383 // Count a non-virtual call in the bytecodes. | |
1384 void InterpreterMacroAssembler::profile_call(Register scratch1, Register scratch2) { | |
1385 if (ProfileInterpreter) { | |
1386 Label profile_continue; | |
1387 | |
1388 // If no method data exists, go to profile_continue. | |
1389 test_method_data_pointer(profile_continue); | |
1390 | |
1391 // We are making a call. Increment the count. | |
1392 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
1393 | |
1394 // The method data pointer needs to be updated to reflect the new target. | |
1395 update_mdp_by_constant(in_bytes(CounterData::counter_data_size())); | |
1396 bind (profile_continue); | |
1397 } | |
1398 } | |
1399 | |
1400 // Count a final call in the bytecodes. | |
1401 void InterpreterMacroAssembler::profile_final_call(Register scratch1, Register scratch2) { | |
1402 if (ProfileInterpreter) { | |
1403 Label profile_continue; | |
1404 | |
1405 // If no method data exists, go to profile_continue. | |
1406 test_method_data_pointer(profile_continue); | |
1407 | |
1408 // We are making a call. Increment the count. | |
1409 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
1410 | |
1411 // The method data pointer needs to be updated to reflect the new target. | |
1412 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); | |
1413 bind (profile_continue); | |
1414 } | |
1415 } | |
1416 | |
1417 // Count a virtual call in the bytecodes. | |
1418 void InterpreterMacroAssembler::profile_virtual_call(Register Rreceiver, | |
1419 Register Rscratch1, | |
1420 Register Rscratch2, | |
1421 bool receiver_can_be_null) { | |
1422 if (!ProfileInterpreter) { return; } | |
1423 Label profile_continue; | |
1424 | |
1425 // If no method data exists, go to profile_continue. | |
1426 test_method_data_pointer(profile_continue); | |
1427 | |
1428 Label skip_receiver_profile; | |
1429 if (receiver_can_be_null) { | |
1430 Label not_null; | |
1431 cmpdi(CCR0, Rreceiver, 0); | |
1432 bne(CCR0, not_null); | |
1433 // We are making a call. Increment the count for null receiver. | |
1434 increment_mdp_data_at(in_bytes(CounterData::count_offset()), Rscratch1, Rscratch2); | |
1435 b(skip_receiver_profile); | |
1436 bind(not_null); | |
1437 } | |
1438 | |
1439 // Record the receiver type. | |
1440 record_klass_in_profile(Rreceiver, Rscratch1, Rscratch2, true); | |
1441 bind(skip_receiver_profile); | |
1442 | |
1443 // The method data pointer needs to be updated to reflect the new target. | |
1444 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); | |
1445 bind (profile_continue); | |
1446 } | |
1447 | |
1448 void InterpreterMacroAssembler::profile_typecheck(Register Rklass, Register Rscratch1, Register Rscratch2) { | |
1449 if (ProfileInterpreter) { | |
1450 Label profile_continue; | |
1451 | |
1452 // If no method data exists, go to profile_continue. | |
1453 test_method_data_pointer(profile_continue); | |
1454 | |
1455 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1456 if (TypeProfileCasts) { | |
1457 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1458 | |
1459 // Record the object type. | |
1460 record_klass_in_profile(Rklass, Rscratch1, Rscratch2, false); | |
1461 } | |
1462 | |
1463 // The method data pointer needs to be updated. | |
1464 update_mdp_by_constant(mdp_delta); | |
1465 | |
1466 bind (profile_continue); | |
1467 } | |
1468 } | |
1469 | |
1470 void InterpreterMacroAssembler::profile_typecheck_failed(Register Rscratch1, Register Rscratch2) { | |
1471 if (ProfileInterpreter && TypeProfileCasts) { | |
1472 Label profile_continue; | |
1473 | |
1474 // If no method data exists, go to profile_continue. | |
1475 test_method_data_pointer(profile_continue); | |
1476 | |
1477 int count_offset = in_bytes(CounterData::count_offset()); | |
1478 // Back up the address, since we have already bumped the mdp. | |
1479 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
1480 | |
1481 // *Decrement* the counter. We expect to see zero or small negatives. | |
1482 increment_mdp_data_at(count_offset, Rscratch1, Rscratch2, true); | |
1483 | |
1484 bind (profile_continue); | |
1485 } | |
1486 } | |
1487 | |
1488 // Count a ret in the bytecodes. | |
1489 void InterpreterMacroAssembler::profile_ret(TosState state, Register return_bci, Register scratch1, Register scratch2) { | |
1490 if (ProfileInterpreter) { | |
1491 Label profile_continue; | |
1492 uint row; | |
1493 | |
1494 // If no method data exists, go to profile_continue. | |
1495 test_method_data_pointer(profile_continue); | |
1496 | |
1497 // Update the total ret count. | |
1498 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2 ); | |
1499 | |
1500 for (row = 0; row < RetData::row_limit(); row++) { | |
1501 Label next_test; | |
1502 | |
1503 // See if return_bci is equal to bci[n]: | |
1504 test_mdp_data_at(in_bytes(RetData::bci_offset(row)), return_bci, next_test, scratch1); | |
1505 | |
1506 // return_bci is equal to bci[n]. Increment the count. | |
1507 increment_mdp_data_at(in_bytes(RetData::bci_count_offset(row)), scratch1, scratch2); | |
1508 | |
1509 // The method data pointer needs to be updated to reflect the new target. | |
1510 update_mdp_by_offset(in_bytes(RetData::bci_displacement_offset(row)), scratch1); | |
1511 b(profile_continue); | |
1512 bind(next_test); | |
1513 } | |
1514 | |
1515 update_mdp_for_ret(state, return_bci); | |
1516 | |
1517 bind (profile_continue); | |
1518 } | |
1519 } | |
1520 | |
1521 // Count the default case of a switch construct. | |
1522 void InterpreterMacroAssembler::profile_switch_default(Register scratch1, Register scratch2) { | |
1523 if (ProfileInterpreter) { | |
1524 Label profile_continue; | |
1525 | |
1526 // If no method data exists, go to profile_continue. | |
1527 test_method_data_pointer(profile_continue); | |
1528 | |
1529 // Update the default case count | |
1530 increment_mdp_data_at(in_bytes(MultiBranchData::default_count_offset()), | |
1531 scratch1, scratch2); | |
1532 | |
1533 // The method data pointer needs to be updated. | |
1534 update_mdp_by_offset(in_bytes(MultiBranchData::default_displacement_offset()), | |
1535 scratch1); | |
1536 | |
1537 bind (profile_continue); | |
1538 } | |
1539 } | |
1540 | |
1541 // Count the index'th case of a switch construct. | |
1542 void InterpreterMacroAssembler::profile_switch_case(Register index, | |
1543 Register scratch1, | |
1544 Register scratch2, | |
1545 Register scratch3) { | |
1546 if (ProfileInterpreter) { | |
1547 assert_different_registers(index, scratch1, scratch2, scratch3); | |
1548 Label profile_continue; | |
1549 | |
1550 // If no method data exists, go to profile_continue. | |
1551 test_method_data_pointer(profile_continue); | |
1552 | |
1553 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes(). | |
1554 li(scratch3, in_bytes(MultiBranchData::case_array_offset())); | |
1555 | |
1556 assert (in_bytes(MultiBranchData::per_case_size()) == 16, "so that shladd works"); | |
1557 sldi(scratch1, index, exact_log2(in_bytes(MultiBranchData::per_case_size()))); | |
1558 add(scratch1, scratch1, scratch3); | |
1559 | |
1560 // Update the case count. | |
1561 increment_mdp_data_at(scratch1, in_bytes(MultiBranchData::relative_count_offset()), scratch2, scratch3); | |
1562 | |
1563 // The method data pointer needs to be updated. | |
1564 update_mdp_by_offset(scratch1, in_bytes(MultiBranchData::relative_displacement_offset()), scratch2); | |
1565 | |
1566 bind (profile_continue); | |
1567 } | |
1568 } | |
1569 | |
1570 void InterpreterMacroAssembler::profile_null_seen(Register Rscratch1, Register Rscratch2) { | |
1571 if (ProfileInterpreter) { | |
1572 assert_different_registers(Rscratch1, Rscratch2); | |
1573 Label profile_continue; | |
1574 | |
1575 // If no method data exists, go to profile_continue. | |
1576 test_method_data_pointer(profile_continue); | |
1577 | |
1578 set_mdp_flag_at(BitData::null_seen_byte_constant(), Rscratch1); | |
1579 | |
1580 // The method data pointer needs to be updated. | |
1581 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1582 if (TypeProfileCasts) { | |
1583 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1584 } | |
1585 update_mdp_by_constant(mdp_delta); | |
1586 | |
1587 bind (profile_continue); | |
1588 } | |
1589 } | |
1590 | |
1591 void InterpreterMacroAssembler::record_klass_in_profile(Register Rreceiver, | |
1592 Register Rscratch1, Register Rscratch2, | |
1593 bool is_virtual_call) { | |
1594 assert(ProfileInterpreter, "must be profiling"); | |
1595 assert_different_registers(Rreceiver, Rscratch1, Rscratch2); | |
1596 | |
1597 Label done; | |
1598 record_klass_in_profile_helper(Rreceiver, Rscratch1, Rscratch2, 0, done, is_virtual_call); | |
1599 bind (done); | |
1600 } | |
1601 | |
1602 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
1603 Register receiver, Register scratch1, Register scratch2, | |
1604 int start_row, Label& done, bool is_virtual_call) { | |
1605 if (TypeProfileWidth == 0) { | |
1606 if (is_virtual_call) { | |
1607 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
1608 } | |
1609 return; | |
1610 } | |
1611 | |
1612 int last_row = VirtualCallData::row_limit() - 1; | |
1613 assert(start_row <= last_row, "must be work left to do"); | |
1614 // Test this row for both the receiver and for null. | |
1615 // Take any of three different outcomes: | |
1616 // 1. found receiver => increment count and goto done | |
1617 // 2. found null => keep looking for case 1, maybe allocate this cell | |
1618 // 3. found something else => keep looking for cases 1 and 2 | |
1619 // Case 3 is handled by a recursive call. | |
1620 for (int row = start_row; row <= last_row; row++) { | |
1621 Label next_test; | |
1622 bool test_for_null_also = (row == start_row); | |
1623 | |
1624 // See if the receiver is receiver[n]. | |
1625 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
1626 test_mdp_data_at(recvr_offset, receiver, next_test, scratch1); | |
1627 // delayed()->tst(scratch); | |
1628 | |
1629 // The receiver is receiver[n]. Increment count[n]. | |
1630 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
1631 increment_mdp_data_at(count_offset, scratch1, scratch2); | |
1632 b(done); | |
1633 bind(next_test); | |
1634 | |
1635 if (test_for_null_also) { | |
1636 Label found_null; | |
1637 // Failed the equality check on receiver[n]... Test for null. | |
1638 if (start_row == last_row) { | |
1639 // The only thing left to do is handle the null case. | |
1640 if (is_virtual_call) { | |
1641 // Scratch1 contains test_out from test_mdp_data_at. | |
1642 cmpdi(CCR0, scratch1, 0); | |
1643 beq(CCR0, found_null); | |
1644 // Receiver did not match any saved receiver and there is no empty row for it. | |
1645 // Increment total counter to indicate polymorphic case. | |
1646 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
1647 b(done); | |
1648 bind(found_null); | |
1649 } else { | |
1650 cmpdi(CCR0, scratch1, 0); | |
1651 bne(CCR0, done); | |
1652 } | |
1653 break; | |
1654 } | |
1655 // Since null is rare, make it be the branch-taken case. | |
1656 cmpdi(CCR0, scratch1, 0); | |
1657 beq(CCR0, found_null); | |
1658 | |
1659 // Put all the "Case 3" tests here. | |
1660 record_klass_in_profile_helper(receiver, scratch1, scratch2, start_row + 1, done, is_virtual_call); | |
1661 | |
1662 // Found a null. Keep searching for a matching receiver, | |
1663 // but remember that this is an empty (unused) slot. | |
1664 bind(found_null); | |
1665 } | |
1666 } | |
1667 | |
1668 // In the fall-through case, we found no matching receiver, but we | |
1669 // observed the receiver[start_row] is NULL. | |
1670 | |
1671 // Fill in the receiver field and increment the count. | |
1672 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
1673 set_mdp_data_at(recvr_offset, receiver); | |
1674 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
1675 li(scratch1, DataLayout::counter_increment); | |
1676 set_mdp_data_at(count_offset, scratch1); | |
1677 if (start_row > 0) { | |
1678 b(done); | |
1679 } | |
1680 } | |
1681 | |
1682 // Add a InterpMonitorElem to stack (see frame_sparc.hpp). | |
1683 void InterpreterMacroAssembler::add_monitor_to_stack(bool stack_is_empty, Register Rtemp1, Register Rtemp2) { | |
1684 | |
1685 // Very-local scratch registers. | |
1686 const Register esp = Rtemp1; | |
1687 const Register slot = Rtemp2; | |
1688 | |
1689 // Extracted monitor_size. | |
1690 int monitor_size = frame::interpreter_frame_monitor_size_in_bytes(); | |
1691 assert(Assembler::is_aligned((unsigned int)monitor_size, | |
1692 (unsigned int)frame::alignment_in_bytes), | |
1693 "size of a monitor must respect alignment of SP"); | |
1694 | |
1695 resize_frame(-monitor_size, /*temp*/esp); // Allocate space for new monitor | |
1696 std(R1_SP, _ijava_state_neg(top_frame_sp), esp); // esp contains fp | |
1697 | |
1698 // Shuffle expression stack down. Recall that stack_base points | |
1699 // just above the new expression stack bottom. Old_tos and new_tos | |
1700 // are used to scan thru the old and new expression stacks. | |
1701 if (!stack_is_empty) { | |
1702 Label copy_slot, copy_slot_finished; | |
1703 const Register n_slots = slot; | |
1704 | |
1705 addi(esp, R15_esp, Interpreter::stackElementSize); // Point to first element (pre-pushed stack). | |
1706 subf(n_slots, esp, R26_monitor); | |
1707 srdi_(n_slots, n_slots, LogBytesPerWord); // Compute number of slots to copy. | |
1708 assert(LogBytesPerWord == 3, "conflicts assembler instructions"); | |
1709 beq(CCR0, copy_slot_finished); // Nothing to copy. | |
1710 | |
1711 mtctr(n_slots); | |
1712 | |
1713 // loop | |
1714 bind(copy_slot); | |
1715 ld(slot, 0, esp); // Move expression stack down. | |
1716 std(slot, -monitor_size, esp); // distance = monitor_size | |
1717 addi(esp, esp, BytesPerWord); | |
1718 bdnz(copy_slot); | |
1719 | |
1720 bind(copy_slot_finished); | |
1721 } | |
1722 | |
1723 addi(R15_esp, R15_esp, -monitor_size); | |
1724 addi(R26_monitor, R26_monitor, -monitor_size); | |
1725 | |
1726 // Restart interpreter | |
1727 } | |
1728 | |
1729 // ============================================================================ | |
1730 // Java locals access | |
1731 | |
1732 // Load a local variable at index in Rindex into register Rdst_value. | |
1733 // Also puts address of local into Rdst_address as a service. | |
1734 // Kills: | |
1735 // - Rdst_value | |
1736 // - Rdst_address | |
1737 void InterpreterMacroAssembler::load_local_int(Register Rdst_value, Register Rdst_address, Register Rindex) { | |
1738 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
1739 subf(Rdst_address, Rdst_address, R18_locals); | |
1740 lwz(Rdst_value, 0, Rdst_address); | |
1741 } | |
1742 | |
1743 // Load a local variable at index in Rindex into register Rdst_value. | |
1744 // Also puts address of local into Rdst_address as a service. | |
1745 // Kills: | |
1746 // - Rdst_value | |
1747 // - Rdst_address | |
1748 void InterpreterMacroAssembler::load_local_long(Register Rdst_value, Register Rdst_address, Register Rindex) { | |
1749 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
1750 subf(Rdst_address, Rdst_address, R18_locals); | |
1751 ld(Rdst_value, -8, Rdst_address); | |
1752 } | |
1753 | |
1754 // Load a local variable at index in Rindex into register Rdst_value. | |
1755 // Also puts address of local into Rdst_address as a service. | |
1756 // Input: | |
1757 // - Rindex: slot nr of local variable | |
1758 // Kills: | |
1759 // - Rdst_value | |
1760 // - Rdst_address | |
1761 void InterpreterMacroAssembler::load_local_ptr(Register Rdst_value, Register Rdst_address, Register Rindex) { | |
1762 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
1763 subf(Rdst_address, Rdst_address, R18_locals); | |
1764 ld(Rdst_value, 0, Rdst_address); | |
1765 } | |
1766 | |
1767 // Load a local variable at index in Rindex into register Rdst_value. | |
1768 // Also puts address of local into Rdst_address as a service. | |
1769 // Kills: | |
1770 // - Rdst_value | |
1771 // - Rdst_address | |
1772 void InterpreterMacroAssembler::load_local_float(FloatRegister Rdst_value, Register Rdst_address, Register Rindex) { | |
1773 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
1774 subf(Rdst_address, Rdst_address, R18_locals); | |
1775 lfs(Rdst_value, 0, Rdst_address); | |
1776 } | |
1777 | |
1778 // Load a local variable at index in Rindex into register Rdst_value. | |
1779 // Also puts address of local into Rdst_address as a service. | |
1780 // Kills: | |
1781 // - Rdst_value | |
1782 // - Rdst_address | |
1783 void InterpreterMacroAssembler::load_local_double(FloatRegister Rdst_value, Register Rdst_address, Register Rindex) { | |
1784 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
1785 subf(Rdst_address, Rdst_address, R18_locals); | |
1786 lfd(Rdst_value, -8, Rdst_address); | |
1787 } | |
1788 | |
1789 // Store an int value at local variable slot Rindex. | |
1790 // Kills: | |
1791 // - Rindex | |
1792 void InterpreterMacroAssembler::store_local_int(Register Rvalue, Register Rindex) { | |
1793 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
1794 subf(Rindex, Rindex, R18_locals); | |
1795 stw(Rvalue, 0, Rindex); | |
1796 } | |
1797 | |
1798 // Store a long value at local variable slot Rindex. | |
1799 // Kills: | |
1800 // - Rindex | |
1801 void InterpreterMacroAssembler::store_local_long(Register Rvalue, Register Rindex) { | |
1802 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
1803 subf(Rindex, Rindex, R18_locals); | |
1804 std(Rvalue, -8, Rindex); | |
1805 } | |
1806 | |
1807 // Store an oop value at local variable slot Rindex. | |
1808 // Kills: | |
1809 // - Rindex | |
1810 void InterpreterMacroAssembler::store_local_ptr(Register Rvalue, Register Rindex) { | |
1811 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
1812 subf(Rindex, Rindex, R18_locals); | |
1813 std(Rvalue, 0, Rindex); | |
1814 } | |
1815 | |
1816 // Store an int value at local variable slot Rindex. | |
1817 // Kills: | |
1818 // - Rindex | |
1819 void InterpreterMacroAssembler::store_local_float(FloatRegister Rvalue, Register Rindex) { | |
1820 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
1821 subf(Rindex, Rindex, R18_locals); | |
1822 stfs(Rvalue, 0, Rindex); | |
1823 } | |
1824 | |
1825 // Store an int value at local variable slot Rindex. | |
1826 // Kills: | |
1827 // - Rindex | |
1828 void InterpreterMacroAssembler::store_local_double(FloatRegister Rvalue, Register Rindex) { | |
1829 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
1830 subf(Rindex, Rindex, R18_locals); | |
1831 stfd(Rvalue, -8, Rindex); | |
1832 } | |
1833 | |
1834 // Read pending exception from thread and jump to interpreter. | |
1835 // Throw exception entry if one if pending. Fall through otherwise. | |
1836 void InterpreterMacroAssembler::check_and_forward_exception(Register Rscratch1, Register Rscratch2) { | |
1837 assert_different_registers(Rscratch1, Rscratch2, R3); | |
1838 Register Rexception = Rscratch1; | |
1839 Register Rtmp = Rscratch2; | |
1840 Label Ldone; | |
1841 // Get pending exception oop. | |
1842 ld(Rexception, thread_(pending_exception)); | |
1843 cmpdi(CCR0, Rexception, 0); | |
1844 beq(CCR0, Ldone); | |
1845 li(Rtmp, 0); | |
1846 mr_if_needed(R3, Rexception); | |
1847 std(Rtmp, thread_(pending_exception)); // Clear exception in thread | |
1848 if (Interpreter::rethrow_exception_entry() != NULL) { | |
1849 // Already got entry address. | |
1850 load_dispatch_table(Rtmp, (address*)Interpreter::rethrow_exception_entry()); | |
1851 } else { | |
1852 // Dynamically load entry address. | |
1853 int simm16_rest = load_const_optimized(Rtmp, &Interpreter::_rethrow_exception_entry, R0, true); | |
1854 ld(Rtmp, simm16_rest, Rtmp); | |
1855 } | |
1856 mtctr(Rtmp); | |
1857 save_interpreter_state(Rtmp); | |
1858 bctr(); | |
1859 | |
1860 align(32, 12); | |
1861 bind(Ldone); | |
1862 } | |
1863 | |
1864 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, bool check_exceptions) { | |
1865 save_interpreter_state(R11_scratch1); | |
1866 | |
1867 MacroAssembler::call_VM(oop_result, entry_point, false); | |
1868 | |
1869 restore_interpreter_state(R11_scratch1, /*bcp_and_mdx_only*/ true); | |
1870 | |
1871 check_and_handle_popframe(R11_scratch1); | |
1872 check_and_handle_earlyret(R11_scratch1); | |
1873 // Now check exceptions manually. | |
1874 if (check_exceptions) { | |
1875 check_and_forward_exception(R11_scratch1, R12_scratch2); | |
1876 } | |
1877 } | |
1878 | |
1879 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, bool check_exceptions) { | |
1880 // ARG1 is reserved for the thread. | |
1881 mr_if_needed(R4_ARG2, arg_1); | |
1882 call_VM(oop_result, entry_point, check_exceptions); | |
1883 } | |
1884 | |
1885 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, bool check_exceptions) { | |
1886 // ARG1 is reserved for the thread. | |
1887 mr_if_needed(R4_ARG2, arg_1); | |
1888 assert(arg_2 != R4_ARG2, "smashed argument"); | |
1889 mr_if_needed(R5_ARG3, arg_2); | |
1890 call_VM(oop_result, entry_point, check_exceptions); | |
1891 } | |
1892 | |
1893 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, Register arg_3, bool check_exceptions) { | |
1894 // ARG1 is reserved for the thread. | |
1895 mr_if_needed(R4_ARG2, arg_1); | |
1896 assert(arg_2 != R4_ARG2, "smashed argument"); | |
1897 mr_if_needed(R5_ARG3, arg_2); | |
1898 assert(arg_3 != R4_ARG2 && arg_3 != R5_ARG3, "smashed argument"); | |
1899 mr_if_needed(R6_ARG4, arg_3); | |
1900 call_VM(oop_result, entry_point, check_exceptions); | |
1901 } | |
1902 | |
1903 void InterpreterMacroAssembler::save_interpreter_state(Register scratch) { | |
1904 ld(scratch, 0, R1_SP); | |
1905 std(R15_esp, _ijava_state_neg(esp), scratch); | |
1906 std(R14_bcp, _ijava_state_neg(bcp), scratch); | |
1907 std(R26_monitor, _ijava_state_neg(monitors), scratch); | |
1908 if (ProfileInterpreter) { std(R28_mdx, _ijava_state_neg(mdx), scratch); } | |
1909 // Other entries should be unchanged. | |
1910 } | |
1911 | |
1912 void InterpreterMacroAssembler::restore_interpreter_state(Register scratch, bool bcp_and_mdx_only) { | |
1913 ld(scratch, 0, R1_SP); | |
1914 ld(R14_bcp, _ijava_state_neg(bcp), scratch); // Changed by VM code (exception). | |
1915 if (ProfileInterpreter) { ld(R28_mdx, _ijava_state_neg(mdx), scratch); } // Changed by VM code. | |
1916 if (!bcp_and_mdx_only) { | |
1917 // Following ones are Metadata. | |
1918 ld(R19_method, _ijava_state_neg(method), scratch); | |
1919 ld(R27_constPoolCache, _ijava_state_neg(cpoolCache), scratch); | |
1920 // Following ones are stack addresses and don't require reload. | |
1921 ld(R15_esp, _ijava_state_neg(esp), scratch); | |
1922 ld(R18_locals, _ijava_state_neg(locals), scratch); | |
1923 ld(R26_monitor, _ijava_state_neg(monitors), scratch); | |
1924 } | |
1925 #ifdef ASSERT | |
1926 { | |
1927 Label Lok; | |
1928 subf(R0, R1_SP, scratch); | |
1929 cmpdi(CCR0, R0, frame::abi_reg_args_size + frame::ijava_state_size); | |
1930 bge(CCR0, Lok); | |
1931 stop("frame too small (restore istate)", 0x5432); | |
1932 bind(Lok); | |
1933 } | |
1934 { | |
1935 Label Lok; | |
1936 ld(R0, _ijava_state_neg(ijava_reserved), scratch); | |
1937 cmpdi(CCR0, R0, 0x5afe); | |
1938 beq(CCR0, Lok); | |
1939 stop("frame corrupted (restore istate)", 0x5afe); | |
1940 bind(Lok); | |
1941 } | |
1942 #endif | |
1943 } | |
1944 | |
1945 #endif // !CC_INTERP | |
1946 | |
14408
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1947 void InterpreterMacroAssembler::get_method_counters(Register method, |
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1948 Register Rcounters, |
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1949 Label& skip) { |
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1950 BLOCK_COMMENT("Load and ev. allocate counter object {"); |
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1951 Label has_counters; |
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1952 ld(Rcounters, in_bytes(Method::method_counters_offset()), method); |
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1953 cmpdi(CCR0, Rcounters, 0); |
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1954 bne(CCR0, has_counters); |
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1955 call_VM(noreg, CAST_FROM_FN_PTR(address, |
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1956 InterpreterRuntime::build_method_counters), method, false); |
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1957 ld(Rcounters, in_bytes(Method::method_counters_offset()), method); |
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1958 cmpdi(CCR0, Rcounters, 0); |
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1959 beq(CCR0, skip); // No MethodCounters, OutOfMemory. |
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1960 BLOCK_COMMENT("} Load and ev. allocate counter object"); |
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1961 |
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1962 bind(has_counters); |
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1963 } |
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1964 |
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1965 void InterpreterMacroAssembler::increment_invocation_counter(Register Rcounters, Register iv_be_count, Register Rtmp_r0) { |
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1966 assert(UseCompiler, "incrementing must be useful"); |
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1967 Register invocation_count = iv_be_count; |
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1968 Register backedge_count = Rtmp_r0; |
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1969 int delta = InvocationCounter::count_increment; |
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1970 |
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1971 // Load each counter in a register. |
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1972 // ld(inv_counter, Rtmp); |
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1973 // ld(be_counter, Rtmp2); |
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1974 int inv_counter_offset = in_bytes(MethodCounters::invocation_counter_offset() + |
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1975 InvocationCounter::counter_offset()); |
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1976 int be_counter_offset = in_bytes(MethodCounters::backedge_counter_offset() + |
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1977 InvocationCounter::counter_offset()); |
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1978 |
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1979 BLOCK_COMMENT("Increment profiling counters {"); |
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1980 |
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1981 // Load the backedge counter. |
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1982 lwz(backedge_count, be_counter_offset, Rcounters); // is unsigned int |
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1983 // Mask the backedge counter. |
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1984 Register tmp = invocation_count; |
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1985 li(tmp, InvocationCounter::count_mask_value); |
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1986 andr(backedge_count, tmp, backedge_count); // Cannot use andi, need sign extension of count_mask_value. |
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1987 |
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1988 // Load the invocation counter. |
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1989 lwz(invocation_count, inv_counter_offset, Rcounters); // is unsigned int |
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1990 // Add the delta to the invocation counter and store the result. |
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1991 addi(invocation_count, invocation_count, delta); |
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1992 // Store value. |
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1993 stw(invocation_count, inv_counter_offset, Rcounters); |
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1994 |
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1995 // Add invocation counter + backedge counter. |
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1996 add(iv_be_count, backedge_count, invocation_count); |
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1997 |
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1998 // Note that this macro must leave the backedge_count + invocation_count in |
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1999 // register iv_be_count! |
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2000 BLOCK_COMMENT("} Increment profiling counters"); |
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2001 } |
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2002 |
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2003 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { |
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2004 if (state == atos) { MacroAssembler::verify_oop(reg); } |
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2005 } |
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2006 |
17804 | 2007 #ifndef CC_INTERP |
2008 // Local helper function for the verify_oop_or_return_address macro. | |
2009 static bool verify_return_address(Method* m, int bci) { | |
2010 #ifndef PRODUCT | |
2011 address pc = (address)(m->constMethod()) + in_bytes(ConstMethod::codes_offset()) + bci; | |
2012 // Assume it is a valid return address if it is inside m and is preceded by a jsr. | |
2013 if (!m->contains(pc)) return false; | |
2014 address jsr_pc; | |
2015 jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr); | |
2016 if (*jsr_pc == Bytecodes::_jsr && jsr_pc >= m->code_base()) return true; | |
2017 jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr_w); | |
2018 if (*jsr_pc == Bytecodes::_jsr_w && jsr_pc >= m->code_base()) return true; | |
2019 #endif // PRODUCT | |
2020 return false; | |
2021 } | |
2022 | |
2023 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
2024 if (VerifyFPU) { | |
2025 unimplemented("verfiyFPU"); | |
2026 } | |
2027 } | |
2028 | |
2029 void InterpreterMacroAssembler::verify_oop_or_return_address(Register reg, Register Rtmp) { | |
2030 if (!VerifyOops) return; | |
2031 | |
2032 // The VM documentation for the astore[_wide] bytecode allows | |
2033 // the TOS to be not only an oop but also a return address. | |
2034 Label test; | |
2035 Label skip; | |
2036 // See if it is an address (in the current method): | |
2037 | |
2038 const int log2_bytecode_size_limit = 16; | |
2039 srdi_(Rtmp, reg, log2_bytecode_size_limit); | |
2040 bne(CCR0, test); | |
2041 | |
2042 address fd = CAST_FROM_FN_PTR(address, verify_return_address); | |
2043 unsigned int nbytes_save = 10*8; // 10 volatile gprs | |
2044 | |
2045 save_LR_CR(Rtmp); | |
2046 push_frame_reg_args(nbytes_save, Rtmp); | |
2047 save_volatile_gprs(R1_SP, 112); // except R0 | |
2048 | |
2049 load_const_optimized(Rtmp, fd, R0); | |
2050 mr_if_needed(R4_ARG2, reg); | |
2051 mr(R3_ARG1, R19_method); | |
2052 call_c(Rtmp); // call C | |
2053 | |
2054 restore_volatile_gprs(R1_SP, 112); // except R0 | |
2055 pop_frame(); | |
2056 restore_LR_CR(Rtmp); | |
2057 b(skip); | |
2058 | |
2059 // Perform a more elaborate out-of-line call. | |
2060 // Not an address; verify it: | |
2061 bind(test); | |
2062 verify_oop(reg); | |
2063 bind(skip); | |
2064 } | |
2065 #endif // !CC_INTERP | |
2066 | |
14408
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|
2067 // Inline assembly for: |
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|
2068 // |
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|
2069 // if (thread is in interp_only_mode) { |
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|
2070 // InterpreterRuntime::post_method_entry(); |
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|
2071 // } |
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|
2072 // if (*jvmpi::event_flags_array_at_addr(JVMPI_EVENT_METHOD_ENTRY ) || |
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|
2073 // *jvmpi::event_flags_array_at_addr(JVMPI_EVENT_METHOD_ENTRY2) ) { |
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|
2074 // SharedRuntime::jvmpi_method_entry(method, receiver); |
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|
2075 // } |
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|
2076 void InterpreterMacroAssembler::notify_method_entry() { |
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|
2077 // JVMTI |
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|
2078 // Whenever JVMTI puts a thread in interp_only_mode, method |
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|
2079 // entry/exit events are sent for that thread to track stack |
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|
2080 // depth. If it is possible to enter interp_only_mode we add |
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|
2081 // the code to check if the event should be sent. |
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|
2082 if (JvmtiExport::can_post_interpreter_events()) { |
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parents:
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|
2083 Label jvmti_post_done; |
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|
2084 |
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|
2085 lwz(R0, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); |
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|
2086 cmpwi(CCR0, R0, 0); |
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|
2087 beq(CCR0, jvmti_post_done); |
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|
2088 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry), |
17804 | 2089 /*check_exceptions=*/true CC_INTERP_ONLY(&& false)); |
14408
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|
2090 |
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|
2091 bind(jvmti_post_done); |
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parents:
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|
2092 } |
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|
2093 } |
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|
2094 |
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|
2095 // Inline assembly for: |
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|
2096 // |
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|
2097 // if (thread is in interp_only_mode) { |
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|
2098 // // save result |
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|
2099 // InterpreterRuntime::post_method_exit(); |
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|
2100 // // restore result |
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|
2101 // } |
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|
2102 // if (*jvmpi::event_flags_array_at_addr(JVMPI_EVENT_METHOD_EXIT)) { |
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|
2103 // // save result |
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parents:
diff
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|
2104 // SharedRuntime::jvmpi_method_exit(); |
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parents:
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|
2105 // // restore result |
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parents:
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|
2106 // } |
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|
2107 // |
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|
2108 // Native methods have their result stored in d_tmp and l_tmp. |
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|
2109 // Java methods have their result stored in the expression stack. |
17804 | 2110 void InterpreterMacroAssembler::notify_method_exit(bool is_native_method, TosState state, |
2111 NotifyMethodExitMode mode, bool check_exceptions) { | |
14408
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|
2112 // JVMTI |
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|
2113 // Whenever JVMTI puts a thread in interp_only_mode, method |
ec28f9c041ff
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|
2114 // entry/exit events are sent for that thread to track stack |
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|
2115 // depth. If it is possible to enter interp_only_mode we add |
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|
2116 // the code to check if the event should be sent. |
17804 | 2117 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { |
14408
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|
2118 Label jvmti_post_done; |
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|
2119 |
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|
2120 lwz(R0, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); |
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|
2121 cmpwi(CCR0, R0, 0); |
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|
2122 beq(CCR0, jvmti_post_done); |
17804 | 2123 CC_INTERP_ONLY(assert(is_native_method && !check_exceptions, "must not push state")); |
2124 if (!is_native_method) push(state); // Expose tos to GC. | |
14408
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|
2125 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit), |
17804 | 2126 /*check_exceptions=*/check_exceptions); |
2127 if (!is_native_method) pop(state); | |
14408
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|
2128 |
14445 | 2129 align(32, 12); |
14408
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|
2130 bind(jvmti_post_done); |
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|
2131 } |
17804 | 2132 |
2133 // Dtrace support not implemented. | |
14408
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|
2134 } |
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|
2135 |
17804 | 2136 #ifdef CC_INTERP |
14408
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|
2137 // Convert the current TOP_IJAVA_FRAME into a PARENT_IJAVA_FRAME |
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parents:
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|
2138 // (using parent_frame_resize) and push a new interpreter |
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diff
changeset
|
2139 // TOP_IJAVA_FRAME (using frame_size). |
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|
2140 void InterpreterMacroAssembler::push_interpreter_frame(Register top_frame_size, Register parent_frame_resize, |
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|
2141 Register tmp1, Register tmp2, Register tmp3, |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
2142 Register tmp4, Register pc) { |
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|
2143 assert_different_registers(top_frame_size, parent_frame_resize, tmp1, tmp2, tmp3, tmp4); |
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|
2144 ld(tmp1, _top_ijava_frame_abi(frame_manager_lr), R1_SP); |
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|
2145 mr(tmp2/*top_frame_sp*/, R1_SP); |
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parents:
diff
changeset
|
2146 // Move initial_caller_sp. |
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diff
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|
2147 ld(tmp4, _top_ijava_frame_abi(initial_caller_sp), R1_SP); |
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|
2148 neg(parent_frame_resize, parent_frame_resize); |
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diff
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|
2149 resize_frame(parent_frame_resize/*-parent_frame_resize*/, tmp3); |
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parents:
diff
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|
2150 |
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parents:
diff
changeset
|
2151 // Set LR in new parent frame. |
ec28f9c041ff
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parents:
diff
changeset
|
2152 std(tmp1, _abi(lr), R1_SP); |
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parents:
diff
changeset
|
2153 // Set top_frame_sp info for new parent frame. |
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diff
changeset
|
2154 std(tmp2, _parent_ijava_frame_abi(top_frame_sp), R1_SP); |
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changeset
|
2155 std(tmp4, _parent_ijava_frame_abi(initial_caller_sp), R1_SP); |
ec28f9c041ff
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parents:
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|
2156 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2157 // Push new TOP_IJAVA_FRAME. |
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parents:
diff
changeset
|
2158 push_frame(top_frame_size, tmp2); |
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parents:
diff
changeset
|
2159 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2160 get_PC_trash_LR(tmp3); |
ec28f9c041ff
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parents:
diff
changeset
|
2161 std(tmp3, _top_ijava_frame_abi(frame_manager_lr), R1_SP); |
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|
2162 // Used for non-initial callers by unextended_sp(). |
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diff
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|
2163 std(R1_SP, _top_ijava_frame_abi(initial_caller_sp), R1_SP); |
ec28f9c041ff
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|
2164 } |
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diff
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|
2165 |
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|
2166 // Pop the topmost TOP_IJAVA_FRAME and convert the previous |
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|
2167 // PARENT_IJAVA_FRAME back into a TOP_IJAVA_FRAME. |
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|
2168 void InterpreterMacroAssembler::pop_interpreter_frame(Register tmp1, Register tmp2, Register tmp3, Register tmp4) { |
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|
2169 assert_different_registers(tmp1, tmp2, tmp3, tmp4); |
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diff
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|
2170 |
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|
2171 ld(tmp1/*caller's sp*/, _abi(callers_sp), R1_SP); |
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|
2172 ld(tmp3, _abi(lr), tmp1); |
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parents:
diff
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|
2173 |
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parents:
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|
2174 ld(tmp4, _parent_ijava_frame_abi(initial_caller_sp), tmp1); |
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parents:
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|
2175 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2176 ld(tmp2/*caller's caller's sp*/, _abi(callers_sp), tmp1); |
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parents:
diff
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|
2177 // Merge top frame. |
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parents:
diff
changeset
|
2178 std(tmp2, _abi(callers_sp), R1_SP); |
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parents:
diff
changeset
|
2179 |
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parents:
diff
changeset
|
2180 ld(tmp2, _parent_ijava_frame_abi(top_frame_sp), tmp1); |
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parents:
diff
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|
2181 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2182 // Update C stack pointer to caller's top_abi. |
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parents:
diff
changeset
|
2183 resize_frame_absolute(tmp2/*addr*/, tmp1/*tmp*/, tmp2/*tmp*/); |
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parents:
diff
changeset
|
2184 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2185 // Update LR in top_frame. |
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parents:
diff
changeset
|
2186 std(tmp3, _top_ijava_frame_abi(frame_manager_lr), R1_SP); |
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parents:
diff
changeset
|
2187 |
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parents:
diff
changeset
|
2188 std(tmp4, _top_ijava_frame_abi(initial_caller_sp), R1_SP); |
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parents:
diff
changeset
|
2189 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2190 // Store the top-frame stack-pointer for c2i adapters. |
ec28f9c041ff
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parents:
diff
changeset
|
2191 std(R1_SP, _top_ijava_frame_abi(top_frame_sp), R1_SP); |
ec28f9c041ff
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parents:
diff
changeset
|
2192 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2193 |
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parents:
diff
changeset
|
2194 // Turn state's interpreter frame into the current TOP_IJAVA_FRAME. |
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parents:
diff
changeset
|
2195 void InterpreterMacroAssembler::pop_interpreter_frame_to_state(Register state, Register tmp1, Register tmp2, Register tmp3) { |
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2196 assert_different_registers(R14_state, R15_prev_state, tmp1, tmp2, tmp3); |
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2197 |
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2198 if (state == R14_state) { |
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2199 ld(tmp1/*state's fp*/, state_(_last_Java_fp)); |
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2200 ld(tmp2/*state's sp*/, state_(_last_Java_sp)); |
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2201 } else if (state == R15_prev_state) { |
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2202 ld(tmp1/*state's fp*/, prev_state_(_last_Java_fp)); |
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2203 ld(tmp2/*state's sp*/, prev_state_(_last_Java_sp)); |
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2204 } else { |
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2205 ShouldNotReachHere(); |
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2206 } |
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2207 |
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2208 // Merge top frames. |
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2209 std(tmp1, _abi(callers_sp), R1_SP); |
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2210 |
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2211 // Tmp2 is new SP. |
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2212 // Tmp1 is parent's SP. |
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2213 resize_frame_absolute(tmp2/*addr*/, tmp1/*tmp*/, tmp2/*tmp*/); |
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2214 |
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2215 // Update LR in top_frame. |
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2216 // Must be interpreter frame. |
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2217 get_PC_trash_LR(tmp3); |
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2218 std(tmp3, _top_ijava_frame_abi(frame_manager_lr), R1_SP); |
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2219 // Used for non-initial callers by unextended_sp(). |
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2220 std(R1_SP, _top_ijava_frame_abi(initial_caller_sp), R1_SP); |
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2221 } |
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2222 |
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2223 // Set SP to initial caller's sp, but before fix the back chain. |
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2224 void InterpreterMacroAssembler::resize_frame_to_initial_caller(Register tmp1, Register tmp2) { |
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2225 ld(tmp1, _parent_ijava_frame_abi(initial_caller_sp), R1_SP); |
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2226 ld(tmp2, _parent_ijava_frame_abi(callers_sp), R1_SP); |
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2227 std(tmp2, _parent_ijava_frame_abi(callers_sp), tmp1); // Fix back chain ... |
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2228 mr(R1_SP, tmp1); // ... and resize to initial caller. |
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2229 } |
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2230 |
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2231 // Pop the current interpreter state (without popping the correspoding |
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2232 // frame) and restore R14_state and R15_prev_state accordingly. |
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2233 // Use prev_state_may_be_0 to indicate whether prev_state may be 0 |
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2234 // in order to generate an extra check before retrieving prev_state_(_prev_link). |
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2235 void InterpreterMacroAssembler::pop_interpreter_state(bool prev_state_may_be_0) |
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2236 { |
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2237 // Move prev_state to state and restore prev_state from state_(_prev_link). |
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2238 Label prev_state_is_0; |
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2239 mr(R14_state, R15_prev_state); |
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2240 |
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2241 // Don't retrieve /*state==*/prev_state_(_prev_link) |
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2242 // if /*state==*/prev_state is 0. |
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2243 if (prev_state_may_be_0) { |
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2244 cmpdi(CCR0, R15_prev_state, 0); |
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2245 beq(CCR0, prev_state_is_0); |
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2246 } |
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2247 |
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2248 ld(R15_prev_state, /*state==*/prev_state_(_prev_link)); |
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2249 bind(prev_state_is_0); |
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2250 } |
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2251 |
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2252 void InterpreterMacroAssembler::restore_prev_state() { |
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2253 // _prev_link is private, but cInterpreter is a friend. |
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2254 ld(R15_prev_state, state_(_prev_link)); |
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2255 } |
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2256 #endif // CC_INTERP |