Mercurial > hg > truffle
annotate src/share/vm/runtime/sharedRuntime.hpp @ 14418:cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
Summary: Some platforms, as ppc and s390x/zArch require that 32-bit ints are passed as 64-bit values to C functions. This change adds support to adapt the signature and to issue proper casts to c2-compiled stubs. The functions are used in generate_native_wrapper(). Adapt signature used by the compiler as in PhaseIdealLoop::intrinsify_fill().
Reviewed-by: kvn
author | goetz |
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date | Wed, 18 Sep 2013 14:34:56 -0700 |
parents | 6a936747b569 |
children | 1174c8abbdb6 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP |
26 #define SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP | |
27 | |
28 #include "interpreter/bytecodeHistogram.hpp" | |
29 #include "interpreter/bytecodeTracer.hpp" | |
30 #include "interpreter/linkResolver.hpp" | |
31 #include "memory/allocation.hpp" | |
32 #include "memory/resourceArea.hpp" | |
33 #include "runtime/threadLocalStorage.hpp" | |
34 #include "utilities/hashtable.hpp" | |
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35 #include "utilities/macros.hpp" |
1972 | 36 |
0 | 37 class AdapterHandlerEntry; |
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38 class AdapterHandlerTable; |
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39 class AdapterFingerPrint; |
0 | 40 class vframeStream; |
41 | |
42 // Runtime is the base class for various runtime interfaces | |
43 // (InterpreterRuntime, CompilerRuntime, etc.). It provides | |
44 // shared functionality such as exception forwarding (C++ to | |
45 // Java exceptions), locking/unlocking mechanisms, statistical | |
46 // information, etc. | |
47 | |
48 class SharedRuntime: AllStatic { | |
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49 friend class VMStructs; |
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50 |
0 | 51 private: |
52 static methodHandle resolve_sub_helper(JavaThread *thread, | |
53 bool is_virtual, | |
54 bool is_optimized, TRAPS); | |
55 | |
56 // Shared stub locations | |
57 | |
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58 static RuntimeStub* _wrong_method_blob; |
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59 static RuntimeStub* _ic_miss_blob; |
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60 static RuntimeStub* _resolve_opt_virtual_call_blob; |
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61 static RuntimeStub* _resolve_virtual_call_blob; |
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62 static RuntimeStub* _resolve_static_call_blob; |
0 | 63 |
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64 static DeoptimizationBlob* _deopt_blob; |
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65 |
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66 static SafepointBlob* _polling_page_vectors_safepoint_handler_blob; |
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67 static SafepointBlob* _polling_page_safepoint_handler_blob; |
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68 static SafepointBlob* _polling_page_return_handler_blob; |
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69 |
0 | 70 #ifdef COMPILER2 |
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71 static UncommonTrapBlob* _uncommon_trap_blob; |
0 | 72 #endif // COMPILER2 |
73 | |
74 #ifndef PRODUCT | |
75 // Counters | |
76 static int _nof_megamorphic_calls; // total # of megamorphic calls (through vtable) | |
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77 #endif // !PRODUCT |
0 | 78 |
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79 private: |
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80 enum { POLL_AT_RETURN, POLL_AT_LOOP, POLL_AT_VECTOR_LOOP }; |
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81 static SafepointBlob* generate_handler_blob(address call_ptr, int poll_type); |
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82 static RuntimeStub* generate_resolve_blob(address destination, const char* name); |
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83 |
0 | 84 public: |
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85 static void generate_stubs(void); |
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86 |
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87 // max bytes for each dtrace string parameter |
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88 enum { max_dtrace_string_size = 256 }; |
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89 |
0 | 90 // The following arithmetic routines are used on platforms that do |
91 // not have machine instructions to implement their functionality. | |
92 // Do not remove these. | |
93 | |
94 // long arithmetics | |
95 static jlong lmul(jlong y, jlong x); | |
96 static jlong ldiv(jlong y, jlong x); | |
97 static jlong lrem(jlong y, jlong x); | |
98 | |
99 // float and double remainder | |
100 static jfloat frem(jfloat x, jfloat y); | |
101 static jdouble drem(jdouble x, jdouble y); | |
102 | |
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103 #ifdef __SOFTFP__ |
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104 static jfloat fadd(jfloat x, jfloat y); |
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105 static jfloat fsub(jfloat x, jfloat y); |
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106 static jfloat fmul(jfloat x, jfloat y); |
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107 static jfloat fdiv(jfloat x, jfloat y); |
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108 |
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109 static jdouble dadd(jdouble x, jdouble y); |
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110 static jdouble dsub(jdouble x, jdouble y); |
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111 static jdouble dmul(jdouble x, jdouble y); |
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112 static jdouble ddiv(jdouble x, jdouble y); |
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113 #endif // __SOFTFP__ |
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114 |
0 | 115 // float conversion (needs to set appropriate rounding mode) |
116 static jint f2i (jfloat x); | |
117 static jlong f2l (jfloat x); | |
118 static jint d2i (jdouble x); | |
119 static jlong d2l (jdouble x); | |
120 static jfloat d2f (jdouble x); | |
121 static jfloat l2f (jlong x); | |
122 static jdouble l2d (jlong x); | |
123 | |
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124 #ifdef __SOFTFP__ |
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125 static jfloat i2f (jint x); |
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126 static jdouble i2d (jint x); |
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127 static jdouble f2d (jfloat x); |
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128 #endif // __SOFTFP__ |
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129 |
0 | 130 // double trigonometrics and transcendentals |
131 static jdouble dsin(jdouble x); | |
132 static jdouble dcos(jdouble x); | |
133 static jdouble dtan(jdouble x); | |
134 static jdouble dlog(jdouble x); | |
135 static jdouble dlog10(jdouble x); | |
136 static jdouble dexp(jdouble x); | |
137 static jdouble dpow(jdouble x, jdouble y); | |
138 | |
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139 #if defined(__SOFTFP__) || defined(E500V2) |
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140 static double dabs(double f); |
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141 #endif |
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142 |
14390 | 143 #if defined(__SOFTFP__) || defined(PPC32) |
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144 static double dsqrt(double f); |
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145 #endif |
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146 |
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147 #ifdef __SOFTFP__ |
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148 // C++ compiler generates soft float instructions as well as passing |
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149 // float and double in registers. |
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150 static int fcmpl(float x, float y); |
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151 static int fcmpg(float x, float y); |
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152 static int dcmpl(double x, double y); |
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153 static int dcmpg(double x, double y); |
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154 |
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155 static int unordered_fcmplt(float x, float y); |
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156 static int unordered_dcmplt(double x, double y); |
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157 static int unordered_fcmple(float x, float y); |
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158 static int unordered_dcmple(double x, double y); |
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159 static int unordered_fcmpge(float x, float y); |
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160 static int unordered_dcmpge(double x, double y); |
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161 static int unordered_fcmpgt(float x, float y); |
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162 static int unordered_dcmpgt(double x, double y); |
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163 |
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164 static float fneg(float f); |
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165 static double dneg(double f); |
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166 #endif |
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167 |
0 | 168 // exception handling across interpreter/compiler boundaries |
1295 | 169 static address raw_exception_handler_for_return_address(JavaThread* thread, address return_address); |
170 static address exception_handler_for_return_address(JavaThread* thread, address return_address); | |
0 | 171 |
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172 #if INCLUDE_ALL_GCS |
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173 // G1 write barriers |
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174 static void g1_wb_pre(oopDesc* orig, JavaThread *thread); |
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175 static void g1_wb_post(void* card_addr, JavaThread* thread); |
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176 #endif // INCLUDE_ALL_GCS |
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177 |
0 | 178 // exception handling and implicit exceptions |
179 static address compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
180 bool force_unwind, bool top_frame_only); | |
181 enum ImplicitExceptionKind { | |
182 IMPLICIT_NULL, | |
183 IMPLICIT_DIVIDE_BY_ZERO, | |
184 STACK_OVERFLOW | |
185 }; | |
186 static void throw_AbstractMethodError(JavaThread* thread); | |
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187 static void throw_IncompatibleClassChangeError(JavaThread* thread); |
0 | 188 static void throw_ArithmeticException(JavaThread* thread); |
189 static void throw_NullPointerException(JavaThread* thread); | |
190 static void throw_NullPointerException_at_call(JavaThread* thread); | |
191 static void throw_StackOverflowError(JavaThread* thread); | |
192 static address continuation_for_implicit_exception(JavaThread* thread, | |
193 address faulting_pc, | |
194 ImplicitExceptionKind exception_kind); | |
195 | |
196 // Shared stub locations | |
197 static address get_poll_stub(address pc); | |
198 | |
199 static address get_ic_miss_stub() { | |
200 assert(_ic_miss_blob!= NULL, "oops"); | |
1748 | 201 return _ic_miss_blob->entry_point(); |
0 | 202 } |
203 | |
204 static address get_handle_wrong_method_stub() { | |
205 assert(_wrong_method_blob!= NULL, "oops"); | |
1748 | 206 return _wrong_method_blob->entry_point(); |
0 | 207 } |
208 | |
209 #ifdef COMPILER2 | |
210 static void generate_uncommon_trap_blob(void); | |
211 static UncommonTrapBlob* uncommon_trap_blob() { return _uncommon_trap_blob; } | |
212 #endif // COMPILER2 | |
213 | |
214 static address get_resolve_opt_virtual_call_stub(){ | |
215 assert(_resolve_opt_virtual_call_blob != NULL, "oops"); | |
1748 | 216 return _resolve_opt_virtual_call_blob->entry_point(); |
0 | 217 } |
218 static address get_resolve_virtual_call_stub() { | |
219 assert(_resolve_virtual_call_blob != NULL, "oops"); | |
1748 | 220 return _resolve_virtual_call_blob->entry_point(); |
0 | 221 } |
222 static address get_resolve_static_call_stub() { | |
223 assert(_resolve_static_call_blob != NULL, "oops"); | |
1748 | 224 return _resolve_static_call_blob->entry_point(); |
0 | 225 } |
226 | |
227 static SafepointBlob* polling_page_return_handler_blob() { return _polling_page_return_handler_blob; } | |
228 static SafepointBlob* polling_page_safepoint_handler_blob() { return _polling_page_safepoint_handler_blob; } | |
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229 static SafepointBlob* polling_page_vectors_safepoint_handler_blob() { return _polling_page_vectors_safepoint_handler_blob; } |
0 | 230 |
231 // Counters | |
232 #ifndef PRODUCT | |
233 static address nof_megamorphic_calls_addr() { return (address)&_nof_megamorphic_calls; } | |
234 #endif // PRODUCT | |
235 | |
236 // Helper routine for full-speed JVMTI exception throwing support | |
237 static void throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception); | |
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238 static void throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message = NULL); |
0 | 239 |
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240 // RedefineClasses() tracing support for obsolete method entry |
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241 static int rc_trace_method_entry(JavaThread* thread, Method* m); |
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242 |
0 | 243 // To be used as the entry point for unresolved native methods. |
244 static address native_method_throw_unsatisfied_link_error_entry(); | |
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245 static address native_method_throw_unsupported_operation_exception_entry(); |
0 | 246 |
247 // bytecode tracing is only used by the TraceBytecodes | |
248 static intptr_t trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2) PRODUCT_RETURN0; | |
249 | |
250 // Used to back off a spin lock that is under heavy contention | |
251 static void yield_all(JavaThread* thread, int attempts = 0); | |
252 | |
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253 static oop retrieve_receiver( Symbol* sig, frame caller ); |
0 | 254 |
255 static void register_finalizer(JavaThread* thread, oopDesc* obj); | |
256 | |
257 // dtrace notifications | |
258 static int dtrace_object_alloc(oopDesc* o); | |
259 static int dtrace_object_alloc_base(Thread* thread, oopDesc* o); | |
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260 static int dtrace_method_entry(JavaThread* thread, Method* m); |
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261 static int dtrace_method_exit(JavaThread* thread, Method* m); |
0 | 262 |
263 // Utility method for retrieving the Java thread id, returns 0 if the | |
264 // thread is not a well formed Java thread. | |
265 static jlong get_java_tid(Thread* thread); | |
266 | |
267 | |
268 // used by native wrappers to reenable yellow if overflow happened in native code | |
269 static void reguard_yellow_pages(); | |
270 | |
271 /** | |
272 * Fill in the "X cannot be cast to a Y" message for ClassCastException | |
273 * | |
274 * @param thr the current thread | |
275 * @param name the name of the class of the object attempted to be cast | |
276 * @return the dynamically allocated exception message (must be freed | |
277 * by the caller using a resource mark) | |
278 * | |
279 * BCP must refer to the current 'checkcast' opcode for the frame | |
280 * on top of the stack. | |
281 * The caller (or one of it's callers) must use a ResourceMark | |
282 * in order to correctly free the result. | |
283 */ | |
284 static char* generate_class_cast_message(JavaThread* thr, const char* name); | |
285 | |
286 /** | |
287 * Fill in the "X cannot be cast to a Y" message for ClassCastException | |
288 * | |
289 * @param name the name of the class of the object attempted to be cast | |
290 * @param klass the name of the target klass attempt | |
710 | 291 * @param gripe the specific kind of problem being reported |
0 | 292 * @return the dynamically allocated exception message (must be freed |
293 * by the caller using a resource mark) | |
294 * | |
295 * This version does not require access the frame, so it can be called | |
296 * from interpreted code | |
297 * The caller (or one of it's callers) must use a ResourceMark | |
298 * in order to correctly free the result. | |
299 */ | |
710 | 300 static char* generate_class_cast_message(const char* name, const char* klass, |
301 const char* gripe = " cannot be cast to "); | |
0 | 302 |
303 // Resolves a call site- may patch in the destination of the call into the | |
304 // compiled code. | |
305 static methodHandle resolve_helper(JavaThread *thread, | |
306 bool is_virtual, | |
307 bool is_optimized, TRAPS); | |
308 | |
309 private: | |
310 // deopt blob | |
311 static void generate_deopt_blob(void); | |
312 | |
313 public: | |
314 static DeoptimizationBlob* deopt_blob(void) { return _deopt_blob; } | |
315 | |
316 // Resets a call-site in compiled code so it will get resolved again. | |
317 static methodHandle reresolve_call_site(JavaThread *thread, TRAPS); | |
318 | |
319 // In the code prolog, if the klass comparison fails, the inline cache | |
320 // misses and the call site is patched to megamorphic | |
321 static methodHandle handle_ic_miss_helper(JavaThread* thread, TRAPS); | |
322 | |
323 // Find the method that called us. | |
324 static methodHandle find_callee_method(JavaThread* thread, TRAPS); | |
325 | |
326 | |
327 private: | |
328 static Handle find_callee_info(JavaThread* thread, | |
329 Bytecodes::Code& bc, | |
330 CallInfo& callinfo, TRAPS); | |
331 static Handle find_callee_info_helper(JavaThread* thread, | |
332 vframeStream& vfst, | |
333 Bytecodes::Code& bc, | |
334 CallInfo& callinfo, TRAPS); | |
335 | |
336 static address clean_virtual_call_entry(); | |
337 static address clean_opt_virtual_call_entry(); | |
338 static address clean_static_call_entry(); | |
339 | |
340 public: | |
341 | |
342 // Read the array of BasicTypes from a Java signature, and compute where | |
343 // compiled Java code would like to put the results. Values in reg_lo and | |
344 // reg_hi refer to 4-byte quantities. Values less than SharedInfo::stack0 are | |
345 // registers, those above refer to 4-byte stack slots. All stack slots are | |
346 // based off of the window top. SharedInfo::stack0 refers to the first usable | |
347 // slot in the bottom of the frame. SharedInfo::stack0+1 refers to the memory word | |
348 // 4-bytes higher. So for sparc because the register window save area is at | |
349 // the bottom of the frame the first 16 words will be skipped and SharedInfo::stack0 | |
350 // will be just above it. ( | |
351 // return value is the maximum number of VMReg stack slots the convention will use. | |
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352 static int java_calling_convention(const BasicType* sig_bt, VMRegPair* regs, int total_args_passed, int is_outgoing); |
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353 |
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354 static void check_member_name_argument_is_last_argument(methodHandle method, |
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355 const BasicType* sig_bt, |
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356 const VMRegPair* regs) NOT_DEBUG_RETURN; |
0 | 357 |
358 // Ditto except for calling C | |
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359 // |
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360 // C argument in register AND stack slot. |
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361 // Some architectures require that an argument must be passed in a register |
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362 // AND in a stack slot. These architectures provide a second VMRegPair array |
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363 // to be filled by the c_calling_convention method. On other architectures, |
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364 // NULL is being passed as the second VMRegPair array, so arguments are either |
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365 // passed in a register OR in a stack slot. |
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366 static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, VMRegPair *regs2, |
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367 int total_args_passed); |
0 | 368 |
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369 // Compute the new number of arguments in the signature if 32 bit ints |
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370 // must be converted to longs. Needed if CCallingConventionRequiresIntsAsLongs |
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371 // is true. |
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372 static int convert_ints_to_longints_argcnt(int in_args_count, BasicType* in_sig_bt); |
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373 // Adapt a method's signature if it contains 32 bit integers that must |
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374 // be converted to longs. Needed if CCallingConventionRequiresIntsAsLongs |
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375 // is true. |
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376 static void convert_ints_to_longints(int i2l_argcnt, int& in_args_count, |
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377 BasicType*& in_sig_bt, VMRegPair*& in_regs); |
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378 |
0 | 379 // Generate I2C and C2I adapters. These adapters are simple argument marshalling |
380 // blobs. Unlike adapters in the tiger and earlier releases the code in these | |
381 // blobs does not create a new frame and are therefore virtually invisible | |
382 // to the stack walking code. In general these blobs extend the callers stack | |
383 // as needed for the conversion of argument locations. | |
384 | |
385 // When calling a c2i blob the code will always call the interpreter even if | |
386 // by the time we reach the blob there is compiled code available. This allows | |
387 // the blob to pass the incoming stack pointer (the sender sp) in a known | |
388 // location for the interpreter to record. This is used by the frame code | |
389 // to correct the sender code to match up with the stack pointer when the | |
390 // thread left the compiled code. In addition it allows the interpreter | |
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391 // to remove the space the c2i adapter allocated to do its argument conversion. |
0 | 392 |
393 // Although a c2i blob will always run interpreted even if compiled code is | |
394 // present if we see that compiled code is present the compiled call site | |
395 // will be patched/re-resolved so that later calls will run compiled. | |
396 | |
397 // Aditionally a c2i blob need to have a unverified entry because it can be reached | |
398 // in situations where the call site is an inlined cache site and may go megamorphic. | |
399 | |
400 // A i2c adapter is simpler than the c2i adapter. This is because it is assumed | |
401 // that the interpreter before it does any call dispatch will record the current | |
402 // stack pointer in the interpreter frame. On return it will restore the stack | |
403 // pointer as needed. This means the i2c adapter code doesn't need any special | |
404 // handshaking path with compiled code to keep the stack walking correct. | |
405 | |
406 static AdapterHandlerEntry* generate_i2c2i_adapters(MacroAssembler *_masm, | |
407 int total_args_passed, | |
408 int max_arg, | |
409 const BasicType *sig_bt, | |
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410 const VMRegPair *regs, |
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411 AdapterFingerPrint* fingerprint); |
0 | 412 |
413 // OSR support | |
414 | |
415 // OSR_migration_begin will extract the jvm state from an interpreter | |
416 // frame (locals, monitors) and store the data in a piece of C heap | |
417 // storage. This then allows the interpreter frame to be removed from the | |
418 // stack and the OSR nmethod to be called. That method is called with a | |
419 // pointer to the C heap storage. This pointer is the return value from | |
420 // OSR_migration_begin. | |
421 | |
422 static intptr_t* OSR_migration_begin( JavaThread *thread); | |
423 | |
424 // OSR_migration_end is a trivial routine. It is called after the compiled | |
425 // method has extracted the jvm state from the C heap that OSR_migration_begin | |
426 // created. It's entire job is to simply free this storage. | |
427 static void OSR_migration_end ( intptr_t* buf); | |
428 | |
429 // Convert a sig into a calling convention register layout | |
430 // and find interesting things about it. | |
10390 | 431 static VMRegPair* find_callee_arguments(Symbol* sig, bool has_receiver, bool has_appendix, int *arg_size); |
0 | 432 static VMReg name_for_receiver(); |
433 | |
434 // "Top of Stack" slots that may be unused by the calling convention but must | |
435 // otherwise be preserved. | |
436 // On Intel these are not necessary and the value can be zero. | |
437 // On Sparc this describes the words reserved for storing a register window | |
438 // when an interrupt occurs. | |
439 static uint out_preserve_stack_slots(); | |
440 | |
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441 // Is vector's size (in bytes) bigger than a size saved by default? |
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442 // For example, on x86 16 bytes XMM registers are saved by default. |
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443 static bool is_wide_vector(int size); |
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444 |
0 | 445 // Save and restore a native result |
446 static void save_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); | |
447 static void restore_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); | |
448 | |
449 // Generate a native wrapper for a given method. The method takes arguments | |
450 // in the Java compiled code convention, marshals them to the native | |
451 // convention (handlizes oops, etc), transitions to native, makes the call, | |
452 // returns to java state (possibly blocking), unhandlizes any result and | |
453 // returns. | |
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454 // |
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455 // The wrapper may contain special-case code if the given method |
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456 // is a JNI critical method, or a compiled method handle adapter, |
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457 // such as _invokeBasic, _linkToVirtual, etc. |
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458 static nmethod* generate_native_wrapper(MacroAssembler* masm, |
0 | 459 methodHandle method, |
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460 int compile_id, |
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461 BasicType* sig_bt, |
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462 VMRegPair* regs, |
0 | 463 BasicType ret_type ); |
464 | |
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465 // Block before entering a JNI critical method |
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466 static void block_for_jni_critical(JavaThread* thread); |
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467 |
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468 #ifdef HAVE_DTRACE_H |
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469 // Generate a dtrace wrapper for a given method. The method takes arguments |
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470 // in the Java compiled code convention, marshals them to the native |
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471 // convention (handlizes oops, etc), transitions to native, makes the call, |
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472 // returns to java state (possibly blocking), unhandlizes any result and |
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473 // returns. |
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474 static nmethod *generate_dtrace_nmethod(MacroAssembler* masm, |
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475 methodHandle method); |
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476 |
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477 // dtrace support to convert a Java string to utf8 |
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478 static void get_utf(oopDesc* src, address dst); |
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479 #endif // def HAVE_DTRACE_H |
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480 |
0 | 481 // A compiled caller has just called the interpreter, but compiled code |
482 // exists. Patch the caller so he no longer calls into the interpreter. | |
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483 static void fixup_callers_callsite(Method* moop, address ret_pc); |
0 | 484 |
485 // Slow-path Locking and Unlocking | |
486 static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread); | |
487 static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock); | |
488 | |
489 // Resolving of calls | |
490 static address resolve_static_call_C (JavaThread *thread); | |
491 static address resolve_virtual_call_C (JavaThread *thread); | |
492 static address resolve_opt_virtual_call_C(JavaThread *thread); | |
493 | |
494 // arraycopy, the non-leaf version. (See StubRoutines for all the leaf calls.) | |
495 static void slow_arraycopy_C(oopDesc* src, jint src_pos, | |
496 oopDesc* dest, jint dest_pos, | |
497 jint length, JavaThread* thread); | |
498 | |
499 // handle ic miss with caller being compiled code | |
500 // wrong method handling (inline cache misses, zombie methods) | |
501 static address handle_wrong_method(JavaThread* thread); | |
502 static address handle_wrong_method_ic_miss(JavaThread* thread); | |
503 | |
504 #ifndef PRODUCT | |
505 | |
506 // Collect and print inline cache miss statistics | |
507 private: | |
508 enum { maxICmiss_count = 100 }; | |
509 static int _ICmiss_index; // length of IC miss histogram | |
510 static int _ICmiss_count[maxICmiss_count]; // miss counts | |
511 static address _ICmiss_at[maxICmiss_count]; // miss addresses | |
512 static void trace_ic_miss(address at); | |
513 | |
514 public: | |
515 static int _monitor_enter_ctr; // monitor enter slow | |
516 static int _monitor_exit_ctr; // monitor exit slow | |
517 static int _throw_null_ctr; // throwing a null-pointer exception | |
518 static int _ic_miss_ctr; // total # of IC misses | |
519 static int _wrong_method_ctr; | |
520 static int _resolve_static_ctr; | |
521 static int _resolve_virtual_ctr; | |
522 static int _resolve_opt_virtual_ctr; | |
523 static int _implicit_null_throws; | |
524 static int _implicit_div0_throws; | |
525 | |
526 static int _jbyte_array_copy_ctr; // Slow-path byte array copy | |
527 static int _jshort_array_copy_ctr; // Slow-path short array copy | |
528 static int _jint_array_copy_ctr; // Slow-path int array copy | |
529 static int _jlong_array_copy_ctr; // Slow-path long array copy | |
530 static int _oop_array_copy_ctr; // Slow-path oop array copy | |
531 static int _checkcast_array_copy_ctr; // Slow-path oop array copy, with cast | |
532 static int _unsafe_array_copy_ctr; // Slow-path includes alignment checks | |
533 static int _generic_array_copy_ctr; // Slow-path includes type decoding | |
534 static int _slow_array_copy_ctr; // Slow-path failed out to a method call | |
535 | |
536 static int _new_instance_ctr; // 'new' object requires GC | |
537 static int _new_array_ctr; // 'new' array requires GC | |
538 static int _multi1_ctr, _multi2_ctr, _multi3_ctr, _multi4_ctr, _multi5_ctr; | |
539 static int _find_handler_ctr; // find exception handler | |
540 static int _rethrow_ctr; // rethrow exception | |
541 static int _mon_enter_stub_ctr; // monitor enter stub | |
542 static int _mon_exit_stub_ctr; // monitor exit stub | |
543 static int _mon_enter_ctr; // monitor enter slow | |
544 static int _mon_exit_ctr; // monitor exit slow | |
545 static int _partial_subtype_ctr; // SubRoutines::partial_subtype_check | |
546 | |
547 // Statistics code | |
548 // stats for "normal" compiled calls (non-interface) | |
549 static int _nof_normal_calls; // total # of calls | |
550 static int _nof_optimized_calls; // total # of statically-bound calls | |
551 static int _nof_inlined_calls; // total # of inlined normal calls | |
552 static int _nof_static_calls; // total # of calls to static methods or super methods (invokespecial) | |
553 static int _nof_inlined_static_calls; // total # of inlined static calls | |
554 // stats for compiled interface calls | |
555 static int _nof_interface_calls; // total # of compiled calls | |
556 static int _nof_optimized_interface_calls; // total # of statically-bound interface calls | |
557 static int _nof_inlined_interface_calls; // total # of inlined interface calls | |
558 static int _nof_megamorphic_interface_calls;// total # of megamorphic interface calls | |
559 // stats for runtime exceptions | |
560 static int _nof_removable_exceptions; // total # of exceptions that could be replaced by branches due to inlining | |
561 | |
562 public: // for compiler | |
563 static address nof_normal_calls_addr() { return (address)&_nof_normal_calls; } | |
564 static address nof_optimized_calls_addr() { return (address)&_nof_optimized_calls; } | |
565 static address nof_inlined_calls_addr() { return (address)&_nof_inlined_calls; } | |
566 static address nof_static_calls_addr() { return (address)&_nof_static_calls; } | |
567 static address nof_inlined_static_calls_addr() { return (address)&_nof_inlined_static_calls; } | |
568 static address nof_interface_calls_addr() { return (address)&_nof_interface_calls; } | |
569 static address nof_optimized_interface_calls_addr() { return (address)&_nof_optimized_interface_calls; } | |
570 static address nof_inlined_interface_calls_addr() { return (address)&_nof_inlined_interface_calls; } | |
571 static address nof_megamorphic_interface_calls_addr() { return (address)&_nof_megamorphic_interface_calls; } | |
572 static void print_call_statistics(int comp_total); | |
573 static void print_statistics(); | |
574 static void print_ic_miss_histogram(); | |
575 | |
576 #endif // PRODUCT | |
577 }; | |
578 | |
579 | |
580 // --------------------------------------------------------------------------- | |
581 // Implementation of AdapterHandlerLibrary | |
582 // | |
583 // This library manages argument marshaling adapters and native wrappers. | |
584 // There are 2 flavors of adapters: I2C and C2I. | |
585 // | |
1748 | 586 // The I2C flavor takes a stock interpreted call setup, marshals the |
587 // arguments for a Java-compiled call, and jumps to Rmethod-> code()-> | |
588 // code_begin(). It is broken to call it without an nmethod assigned. | |
589 // The usual behavior is to lift any register arguments up out of the | |
590 // stack and possibly re-pack the extra arguments to be contigious. | |
591 // I2C adapters will save what the interpreter's stack pointer will be | |
592 // after arguments are popped, then adjust the interpreter's frame | |
593 // size to force alignment and possibly to repack the arguments. | |
594 // After re-packing, it jumps to the compiled code start. There are | |
595 // no safepoints in this adapter code and a GC cannot happen while | |
596 // marshaling is in progress. | |
0 | 597 // |
598 // The C2I flavor takes a stock compiled call setup plus the target method in | |
599 // Rmethod, marshals the arguments for an interpreted call and jumps to | |
600 // Rmethod->_i2i_entry. On entry, the interpreted frame has not yet been | |
601 // setup. Compiled frames are fixed-size and the args are likely not in the | |
602 // right place. Hence all the args will likely be copied into the | |
603 // interpreter's frame, forcing that frame to grow. The compiled frame's | |
604 // outgoing stack args will be dead after the copy. | |
605 // | |
606 // Native wrappers, like adapters, marshal arguments. Unlike adapters they | |
607 // also perform an offical frame push & pop. They have a call to the native | |
608 // routine in their middles and end in a return (instead of ending in a jump). | |
609 // The native wrappers are stored in real nmethods instead of the BufferBlobs | |
610 // used by the adapters. The code generation happens here because it's very | |
611 // similar to what the adapters have to do. | |
612 | |
6197 | 613 class AdapterHandlerEntry : public BasicHashtableEntry<mtCode> { |
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614 friend class AdapterHandlerTable; |
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615 |
0 | 616 private: |
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617 AdapterFingerPrint* _fingerprint; |
0 | 618 address _i2c_entry; |
619 address _c2i_entry; | |
620 address _c2i_unverified_entry; | |
621 | |
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622 #ifdef ASSERT |
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623 // Captures code and signature used to generate this adapter when |
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624 // verifing adapter equivalence. |
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625 unsigned char* _saved_code; |
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626 int _code_length; |
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627 BasicType* _saved_sig; |
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628 int _total_args_passed; |
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629 #endif |
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630 |
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631 void init(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
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632 _fingerprint = fingerprint; |
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633 _i2c_entry = i2c_entry; |
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634 _c2i_entry = c2i_entry; |
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635 _c2i_unverified_entry = c2i_unverified_entry; |
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636 #ifdef ASSERT |
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637 _saved_code = NULL; |
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638 _code_length = 0; |
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639 _saved_sig = NULL; |
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640 _total_args_passed = 0; |
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641 #endif |
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642 } |
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643 |
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644 void deallocate(); |
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645 |
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646 // should never be used |
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647 AdapterHandlerEntry(); |
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648 |
0 | 649 public: |
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650 address get_i2c_entry() const { return _i2c_entry; } |
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651 address get_c2i_entry() const { return _c2i_entry; } |
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652 address get_c2i_unverified_entry() const { return _c2i_unverified_entry; } |
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653 |
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654 address base_address(); |
0 | 655 void relocate(address new_base); |
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656 |
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657 AdapterFingerPrint* fingerprint() const { return _fingerprint; } |
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658 |
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659 AdapterHandlerEntry* next() { |
6197 | 660 return (AdapterHandlerEntry*)BasicHashtableEntry<mtCode>::next(); |
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661 } |
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662 |
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663 #ifdef ASSERT |
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664 // Used to verify that code generated for shared adapters is equivalent |
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665 void save_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt); |
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666 bool compare_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt); |
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667 #endif |
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668 |
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669 //virtual void print_on(outputStream* st) const; DO NOT USE |
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670 void print_adapter_on(outputStream* st) const; |
0 | 671 }; |
672 | |
673 class AdapterHandlerLibrary: public AllStatic { | |
674 private: | |
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675 static BufferBlob* _buffer; // the temporary code buffer in CodeCache |
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676 static AdapterHandlerTable* _adapters; |
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677 static AdapterHandlerEntry* _abstract_method_handler; |
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678 static BufferBlob* buffer_blob(); |
0 | 679 static void initialize(); |
680 | |
681 public: | |
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682 |
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683 static AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, |
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684 address i2c_entry, address c2i_entry, address c2i_unverified_entry); |
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685 static nmethod* create_native_wrapper(methodHandle method, int compile_id); |
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686 static AdapterHandlerEntry* get_adapter(methodHandle method); |
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687 |
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688 #ifdef HAVE_DTRACE_H |
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689 static nmethod* create_dtrace_nmethod (methodHandle method); |
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690 #endif // HAVE_DTRACE_H |
0 | 691 |
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692 static void print_handler(CodeBlob* b) { print_handler_on(tty, b); } |
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693 static void print_handler_on(outputStream* st, CodeBlob* b); |
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694 static bool contains(CodeBlob* b); |
0 | 695 #ifndef PRODUCT |
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696 static void print_statistics(); |
0 | 697 #endif /* PRODUCT */ |
698 | |
699 }; | |
1972 | 700 |
701 #endif // SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP |