Mercurial > hg > truffle
annotate src/os_cpu/windows_x86/vm/os_windows_x86.cpp @ 6275:957c266d8bc5
Merge with http://hg.openjdk.java.net/hsx/hsx24/hotspot/
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Tue, 21 Aug 2012 10:39:19 +0200 |
| parents | 897b7d18bebc da4be62fb889 |
| children | e522a00b91aa |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1748 | 2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 // no precompiled headers |
| 26 #include "assembler_x86.inline.hpp" | |
| 27 #include "classfile/classLoader.hpp" | |
| 28 #include "classfile/systemDictionary.hpp" | |
| 29 #include "classfile/vmSymbols.hpp" | |
| 30 #include "code/icBuffer.hpp" | |
| 31 #include "code/vtableStubs.hpp" | |
| 32 #include "interpreter/interpreter.hpp" | |
| 33 #include "jvm_windows.h" | |
| 34 #include "memory/allocation.inline.hpp" | |
| 35 #include "mutex_windows.inline.hpp" | |
| 36 #include "nativeInst_x86.hpp" | |
| 37 #include "os_share_windows.hpp" | |
| 38 #include "prims/jniFastGetField.hpp" | |
| 39 #include "prims/jvm.h" | |
| 40 #include "prims/jvm_misc.hpp" | |
| 41 #include "runtime/arguments.hpp" | |
| 42 #include "runtime/extendedPC.hpp" | |
| 43 #include "runtime/frame.inline.hpp" | |
| 44 #include "runtime/interfaceSupport.hpp" | |
| 45 #include "runtime/java.hpp" | |
| 46 #include "runtime/javaCalls.hpp" | |
| 47 #include "runtime/mutexLocker.hpp" | |
| 48 #include "runtime/osThread.hpp" | |
| 49 #include "runtime/sharedRuntime.hpp" | |
| 50 #include "runtime/stubRoutines.hpp" | |
| 51 #include "runtime/timer.hpp" | |
| 52 #include "thread_windows.inline.hpp" | |
| 53 #include "utilities/events.hpp" | |
| 54 #include "utilities/vmError.hpp" | |
| 55 #ifdef COMPILER1 | |
| 56 #include "c1/c1_Runtime1.hpp" | |
| 57 #endif | |
| 58 #ifdef COMPILER2 | |
| 59 #include "opto/runtime.hpp" | |
| 60 #endif | |
| 61 | |
| 0 | 62 # include "unwind_windows_x86.hpp" |
| 63 #undef REG_SP | |
| 64 #undef REG_FP | |
| 65 #undef REG_PC | |
| 66 #ifdef AMD64 | |
| 67 #define REG_SP Rsp | |
| 68 #define REG_FP Rbp | |
| 69 #define REG_PC Rip | |
| 70 #else | |
| 71 #define REG_SP Esp | |
| 72 #define REG_FP Ebp | |
| 73 #define REG_PC Eip | |
| 74 #endif // AMD64 | |
| 75 | |
| 76 extern LONG WINAPI topLevelExceptionFilter(_EXCEPTION_POINTERS* ); | |
| 77 | |
| 78 // Install a win32 structured exception handler around thread. | |
|
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79 void os::os_exception_wrapper(java_call_t f, JavaValue* value, methodHandle* method, nmethod* nm, JavaCallArguments* args, Thread* thread) { |
| 0 | 80 __try { |
| 81 | |
| 82 #ifndef AMD64 | |
| 83 // We store the current thread in this wrapperthread location | |
| 84 // and determine how far away this address is from the structured | |
| 85 // execption pointer that FS:[0] points to. This get_thread | |
| 86 // code can then get the thread pointer via FS. | |
| 87 // | |
| 88 // Warning: This routine must NEVER be inlined since we'd end up with | |
| 89 // multiple offsets. | |
| 90 // | |
| 91 volatile Thread* wrapperthread = thread; | |
| 92 | |
| 93 if ( ThreadLocalStorage::get_thread_ptr_offset() == 0 ) { | |
| 94 int thread_ptr_offset; | |
| 95 __asm { | |
| 96 lea eax, dword ptr wrapperthread; | |
| 97 sub eax, dword ptr FS:[0H]; | |
| 98 mov thread_ptr_offset, eax | |
| 99 }; | |
| 100 ThreadLocalStorage::set_thread_ptr_offset(thread_ptr_offset); | |
| 101 } | |
| 102 #ifdef ASSERT | |
| 103 // Verify that the offset hasn't changed since we initally captured | |
| 104 // it. This might happen if we accidentally ended up with an | |
| 105 // inlined version of this routine. | |
| 106 else { | |
| 107 int test_thread_ptr_offset; | |
| 108 __asm { | |
| 109 lea eax, dword ptr wrapperthread; | |
| 110 sub eax, dword ptr FS:[0H]; | |
| 111 mov test_thread_ptr_offset, eax | |
| 112 }; | |
| 113 assert(test_thread_ptr_offset == ThreadLocalStorage::get_thread_ptr_offset(), | |
| 114 "thread pointer offset from SEH changed"); | |
| 115 } | |
| 116 #endif // ASSERT | |
| 117 #endif // !AMD64 | |
| 118 | |
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119 f(value, method, nm, args, thread); |
| 0 | 120 } __except(topLevelExceptionFilter((_EXCEPTION_POINTERS*)_exception_info())) { |
| 121 // Nothing to do. | |
| 122 } | |
| 123 } | |
| 124 | |
| 125 #ifdef AMD64 | |
| 126 | |
| 127 // This is the language specific handler for exceptions | |
| 128 // originating from dynamically generated code. | |
| 129 // We call the standard structured exception handler | |
| 130 // We only expect Continued Execution since we cannot unwind | |
| 131 // from generated code. | |
| 132 LONG HandleExceptionFromCodeCache( | |
| 133 IN PEXCEPTION_RECORD ExceptionRecord, | |
| 134 IN ULONG64 EstablisherFrame, | |
| 135 IN OUT PCONTEXT ContextRecord, | |
| 136 IN OUT PDISPATCHER_CONTEXT DispatcherContext) { | |
| 137 EXCEPTION_POINTERS ep; | |
| 138 LONG result; | |
| 139 | |
| 140 ep.ExceptionRecord = ExceptionRecord; | |
| 141 ep.ContextRecord = ContextRecord; | |
| 142 | |
| 143 result = topLevelExceptionFilter(&ep); | |
| 144 | |
| 145 // We better only get a CONTINUE_EXECUTION from our handler | |
| 146 // since we don't have unwind information registered. | |
| 147 | |
| 148 guarantee( result == EXCEPTION_CONTINUE_EXECUTION, | |
| 149 "Unexpected result from topLevelExceptionFilter"); | |
| 150 | |
| 151 return(ExceptionContinueExecution); | |
| 152 } | |
| 153 | |
| 154 | |
| 155 // Structure containing the Windows Data Structures required | |
| 156 // to register our Code Cache exception handler. | |
| 157 // We put these in the CodeCache since the API requires | |
| 158 // all addresses in these structures are relative to the Code | |
| 159 // area registered with RtlAddFunctionTable. | |
| 160 typedef struct { | |
| 161 char ExceptionHandlerInstr[16]; // jmp HandleExceptionFromCodeCache | |
| 162 RUNTIME_FUNCTION rt; | |
| 163 UNWIND_INFO_EH_ONLY unw; | |
| 164 } DynamicCodeData, *pDynamicCodeData; | |
| 165 | |
| 166 #endif // AMD64 | |
| 167 // | |
| 168 // Register our CodeCache area with the OS so it will dispatch exceptions | |
| 169 // to our topLevelExceptionFilter when we take an exception in our | |
| 170 // dynamically generated code. | |
| 171 // | |
| 172 // Arguments: low and high are the address of the full reserved | |
| 173 // codeCache area | |
| 174 // | |
| 175 bool os::register_code_area(char *low, char *high) { | |
| 176 #ifdef AMD64 | |
| 177 | |
| 178 ResourceMark rm; | |
| 179 | |
| 180 pDynamicCodeData pDCD; | |
| 181 PRUNTIME_FUNCTION prt; | |
| 182 PUNWIND_INFO_EH_ONLY punwind; | |
| 183 | |
| 184 // If we are using Vectored Exceptions we don't need this registration | |
| 185 if (UseVectoredExceptions) return true; | |
| 186 | |
| 1748 | 187 BufferBlob* blob = BufferBlob::create("CodeCache Exception Handler", sizeof(DynamicCodeData)); |
| 188 CodeBuffer cb(blob); | |
| 0 | 189 MacroAssembler* masm = new MacroAssembler(&cb); |
| 190 pDCD = (pDynamicCodeData) masm->pc(); | |
| 191 | |
| 192 masm->jump(ExternalAddress((address)&HandleExceptionFromCodeCache)); | |
| 193 masm->flush(); | |
| 194 | |
| 195 // Create an Unwind Structure specifying no unwind info | |
| 196 // other than an Exception Handler | |
| 197 punwind = &pDCD->unw; | |
| 198 punwind->Version = 1; | |
| 199 punwind->Flags = UNW_FLAG_EHANDLER; | |
| 200 punwind->SizeOfProlog = 0; | |
| 201 punwind->CountOfCodes = 0; | |
| 202 punwind->FrameRegister = 0; | |
| 203 punwind->FrameOffset = 0; | |
| 204 punwind->ExceptionHandler = (char *)(&(pDCD->ExceptionHandlerInstr[0])) - | |
| 205 (char*)low; | |
| 206 punwind->ExceptionData[0] = 0; | |
| 207 | |
| 208 // This structure describes the covered dynamic code area. | |
| 209 // Addresses are relative to the beginning on the code cache area | |
| 210 prt = &pDCD->rt; | |
| 211 prt->BeginAddress = 0; | |
| 212 prt->EndAddress = (ULONG)(high - low); | |
| 213 prt->UnwindData = ((char *)punwind - low); | |
| 214 | |
| 215 guarantee(RtlAddFunctionTable(prt, 1, (ULONGLONG)low), | |
| 216 "Failed to register Dynamic Code Exception Handler with RtlAddFunctionTable"); | |
| 217 | |
| 218 #endif // AMD64 | |
| 219 return true; | |
| 220 } | |
| 221 | |
| 222 void os::initialize_thread() { | |
| 223 // Nothing to do. | |
| 224 } | |
| 225 | |
| 226 // Atomics and Stub Functions | |
| 227 | |
| 228 typedef jint xchg_func_t (jint, volatile jint*); | |
| 229 typedef intptr_t xchg_ptr_func_t (intptr_t, volatile intptr_t*); | |
| 230 typedef jint cmpxchg_func_t (jint, volatile jint*, jint); | |
| 231 typedef jlong cmpxchg_long_func_t (jlong, volatile jlong*, jlong); | |
| 232 typedef jint add_func_t (jint, volatile jint*); | |
| 233 typedef intptr_t add_ptr_func_t (intptr_t, volatile intptr_t*); | |
| 234 | |
| 235 #ifdef AMD64 | |
| 236 | |
| 237 jint os::atomic_xchg_bootstrap(jint exchange_value, volatile jint* dest) { | |
| 238 // try to use the stub: | |
| 239 xchg_func_t* func = CAST_TO_FN_PTR(xchg_func_t*, StubRoutines::atomic_xchg_entry()); | |
| 240 | |
| 241 if (func != NULL) { | |
| 242 os::atomic_xchg_func = func; | |
| 243 return (*func)(exchange_value, dest); | |
| 244 } | |
| 245 assert(Threads::number_of_threads() == 0, "for bootstrap only"); | |
| 246 | |
| 247 jint old_value = *dest; | |
| 248 *dest = exchange_value; | |
| 249 return old_value; | |
| 250 } | |
| 251 | |
| 252 intptr_t os::atomic_xchg_ptr_bootstrap(intptr_t exchange_value, volatile intptr_t* dest) { | |
| 253 // try to use the stub: | |
| 254 xchg_ptr_func_t* func = CAST_TO_FN_PTR(xchg_ptr_func_t*, StubRoutines::atomic_xchg_ptr_entry()); | |
| 255 | |
| 256 if (func != NULL) { | |
| 257 os::atomic_xchg_ptr_func = func; | |
| 258 return (*func)(exchange_value, dest); | |
| 259 } | |
| 260 assert(Threads::number_of_threads() == 0, "for bootstrap only"); | |
| 261 | |
| 262 intptr_t old_value = *dest; | |
| 263 *dest = exchange_value; | |
| 264 return old_value; | |
| 265 } | |
| 266 | |
| 267 | |
| 268 jint os::atomic_cmpxchg_bootstrap(jint exchange_value, volatile jint* dest, jint compare_value) { | |
| 269 // try to use the stub: | |
| 270 cmpxchg_func_t* func = CAST_TO_FN_PTR(cmpxchg_func_t*, StubRoutines::atomic_cmpxchg_entry()); | |
| 271 | |
| 272 if (func != NULL) { | |
| 273 os::atomic_cmpxchg_func = func; | |
| 274 return (*func)(exchange_value, dest, compare_value); | |
| 275 } | |
| 276 assert(Threads::number_of_threads() == 0, "for bootstrap only"); | |
| 277 | |
| 278 jint old_value = *dest; | |
| 279 if (old_value == compare_value) | |
| 280 *dest = exchange_value; | |
| 281 return old_value; | |
| 282 } | |
| 283 #endif // AMD64 | |
| 284 | |
| 285 jlong os::atomic_cmpxchg_long_bootstrap(jlong exchange_value, volatile jlong* dest, jlong compare_value) { | |
| 286 // try to use the stub: | |
| 287 cmpxchg_long_func_t* func = CAST_TO_FN_PTR(cmpxchg_long_func_t*, StubRoutines::atomic_cmpxchg_long_entry()); | |
| 288 | |
| 289 if (func != NULL) { | |
| 290 os::atomic_cmpxchg_long_func = func; | |
| 291 return (*func)(exchange_value, dest, compare_value); | |
| 292 } | |
| 293 assert(Threads::number_of_threads() == 0, "for bootstrap only"); | |
| 294 | |
| 295 jlong old_value = *dest; | |
| 296 if (old_value == compare_value) | |
| 297 *dest = exchange_value; | |
| 298 return old_value; | |
| 299 } | |
| 300 | |
| 301 #ifdef AMD64 | |
| 302 | |
| 303 jint os::atomic_add_bootstrap(jint add_value, volatile jint* dest) { | |
| 304 // try to use the stub: | |
| 305 add_func_t* func = CAST_TO_FN_PTR(add_func_t*, StubRoutines::atomic_add_entry()); | |
| 306 | |
| 307 if (func != NULL) { | |
| 308 os::atomic_add_func = func; | |
| 309 return (*func)(add_value, dest); | |
| 310 } | |
| 311 assert(Threads::number_of_threads() == 0, "for bootstrap only"); | |
| 312 | |
| 313 return (*dest) += add_value; | |
| 314 } | |
| 315 | |
| 316 intptr_t os::atomic_add_ptr_bootstrap(intptr_t add_value, volatile intptr_t* dest) { | |
| 317 // try to use the stub: | |
| 318 add_ptr_func_t* func = CAST_TO_FN_PTR(add_ptr_func_t*, StubRoutines::atomic_add_ptr_entry()); | |
| 319 | |
| 320 if (func != NULL) { | |
| 321 os::atomic_add_ptr_func = func; | |
| 322 return (*func)(add_value, dest); | |
| 323 } | |
| 324 assert(Threads::number_of_threads() == 0, "for bootstrap only"); | |
| 325 | |
| 326 return (*dest) += add_value; | |
| 327 } | |
| 328 | |
| 329 xchg_func_t* os::atomic_xchg_func = os::atomic_xchg_bootstrap; | |
| 330 xchg_ptr_func_t* os::atomic_xchg_ptr_func = os::atomic_xchg_ptr_bootstrap; | |
| 331 cmpxchg_func_t* os::atomic_cmpxchg_func = os::atomic_cmpxchg_bootstrap; | |
| 332 add_func_t* os::atomic_add_func = os::atomic_add_bootstrap; | |
| 333 add_ptr_func_t* os::atomic_add_ptr_func = os::atomic_add_ptr_bootstrap; | |
| 334 | |
| 335 #endif // AMD64 | |
| 336 | |
| 337 cmpxchg_long_func_t* os::atomic_cmpxchg_long_func = os::atomic_cmpxchg_long_bootstrap; | |
| 338 | |
| 339 ExtendedPC os::fetch_frame_from_context(void* ucVoid, | |
| 340 intptr_t** ret_sp, intptr_t** ret_fp) { | |
| 341 | |
| 342 ExtendedPC epc; | |
| 343 CONTEXT* uc = (CONTEXT*)ucVoid; | |
| 344 | |
| 345 if (uc != NULL) { | |
| 346 epc = ExtendedPC((address)uc->REG_PC); | |
| 347 if (ret_sp) *ret_sp = (intptr_t*)uc->REG_SP; | |
| 348 if (ret_fp) *ret_fp = (intptr_t*)uc->REG_FP; | |
| 349 } else { | |
| 350 // construct empty ExtendedPC for return value checking | |
| 351 epc = ExtendedPC(NULL); | |
| 352 if (ret_sp) *ret_sp = (intptr_t *)NULL; | |
| 353 if (ret_fp) *ret_fp = (intptr_t *)NULL; | |
| 354 } | |
| 355 | |
| 356 return epc; | |
| 357 } | |
| 358 | |
| 359 frame os::fetch_frame_from_context(void* ucVoid) { | |
| 360 intptr_t* sp; | |
| 361 intptr_t* fp; | |
| 362 ExtendedPC epc = fetch_frame_from_context(ucVoid, &sp, &fp); | |
| 363 return frame(sp, fp, epc.pc()); | |
| 364 } | |
| 365 | |
| 366 // VC++ does not save frame pointer on stack in optimized build. It | |
| 367 // can be turned off by /Oy-. If we really want to walk C frames, | |
| 368 // we can use the StackWalk() API. | |
| 369 frame os::get_sender_for_C_frame(frame* fr) { | |
| 370 return frame(fr->sender_sp(), fr->link(), fr->sender_pc()); | |
| 371 } | |
| 372 | |
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373 #ifndef AMD64 |
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374 // Returns an estimate of the current stack pointer. Result must be guaranteed |
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375 // to point into the calling threads stack, and be no lower than the current |
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376 // stack pointer. |
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377 address os::current_stack_pointer() { |
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378 int dummy; |
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379 address sp = (address)&dummy; |
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380 return sp; |
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381 } |
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382 #else |
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383 // Returns the current stack pointer. Accurate value needed for |
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384 // os::verify_stack_alignment(). |
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385 address os::current_stack_pointer() { |
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386 typedef address get_sp_func(); |
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387 get_sp_func* func = CAST_TO_FN_PTR(get_sp_func*, |
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388 StubRoutines::x86::get_previous_sp_entry()); |
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389 return (*func)(); |
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390 } |
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391 #endif |
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392 |
| 0 | 393 |
| 394 #ifndef AMD64 | |
| 395 intptr_t* _get_previous_fp() { | |
| 396 intptr_t **frameptr; | |
| 397 __asm { | |
| 398 mov frameptr, ebp | |
| 399 }; | |
| 400 return *frameptr; | |
| 401 } | |
| 402 #endif // !AMD64 | |
| 403 | |
| 404 frame os::current_frame() { | |
| 405 | |
| 406 #ifdef AMD64 | |
| 407 // apparently _asm not supported on windows amd64 | |
| 408 typedef intptr_t* get_fp_func (); | |
| 409 get_fp_func* func = CAST_TO_FN_PTR(get_fp_func*, | |
| 304 | 410 StubRoutines::x86::get_previous_fp_entry()); |
| 0 | 411 if (func == NULL) return frame(NULL, NULL, NULL); |
| 412 intptr_t* fp = (*func)(); | |
| 413 #else | |
| 414 intptr_t* fp = _get_previous_fp(); | |
| 415 #endif // AMD64 | |
| 416 | |
| 417 frame myframe((intptr_t*)os::current_stack_pointer(), | |
| 418 (intptr_t*)fp, | |
| 419 CAST_FROM_FN_PTR(address, os::current_frame)); | |
| 420 if (os::is_first_C_frame(&myframe)) { | |
| 421 // stack is not walkable | |
| 422 return frame(NULL, NULL, NULL); | |
| 423 } else { | |
| 424 return os::get_sender_for_C_frame(&myframe); | |
| 425 } | |
| 426 } | |
| 427 | |
| 428 void os::print_context(outputStream *st, void *context) { | |
| 429 if (context == NULL) return; | |
| 430 | |
| 431 CONTEXT* uc = (CONTEXT*)context; | |
| 432 | |
| 433 st->print_cr("Registers:"); | |
| 434 #ifdef AMD64 | |
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435 st->print( "RAX=" INTPTR_FORMAT, uc->Rax); |
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436 st->print(", RBX=" INTPTR_FORMAT, uc->Rbx); |
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437 st->print(", RCX=" INTPTR_FORMAT, uc->Rcx); |
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438 st->print(", RDX=" INTPTR_FORMAT, uc->Rdx); |
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439 st->cr(); |
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440 st->print( "RSP=" INTPTR_FORMAT, uc->Rsp); |
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441 st->print(", RBP=" INTPTR_FORMAT, uc->Rbp); |
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442 st->print(", RSI=" INTPTR_FORMAT, uc->Rsi); |
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443 st->print(", RDI=" INTPTR_FORMAT, uc->Rdi); |
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444 st->cr(); |
| 1907 | 445 st->print( "R8 =" INTPTR_FORMAT, uc->R8); |
| 446 st->print(", R9 =" INTPTR_FORMAT, uc->R9); | |
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447 st->print(", R10=" INTPTR_FORMAT, uc->R10); |
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448 st->print(", R11=" INTPTR_FORMAT, uc->R11); |
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449 st->cr(); |
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450 st->print( "R12=" INTPTR_FORMAT, uc->R12); |
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451 st->print(", R13=" INTPTR_FORMAT, uc->R13); |
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452 st->print(", R14=" INTPTR_FORMAT, uc->R14); |
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453 st->print(", R15=" INTPTR_FORMAT, uc->R15); |
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454 st->cr(); |
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455 st->print( "RIP=" INTPTR_FORMAT, uc->Rip); |
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456 st->print(", EFLAGS=" INTPTR_FORMAT, uc->EFlags); |
| 0 | 457 #else |
| 458 st->print( "EAX=" INTPTR_FORMAT, uc->Eax); | |
| 459 st->print(", EBX=" INTPTR_FORMAT, uc->Ebx); | |
| 460 st->print(", ECX=" INTPTR_FORMAT, uc->Ecx); | |
| 461 st->print(", EDX=" INTPTR_FORMAT, uc->Edx); | |
| 462 st->cr(); | |
| 463 st->print( "ESP=" INTPTR_FORMAT, uc->Esp); | |
| 464 st->print(", EBP=" INTPTR_FORMAT, uc->Ebp); | |
| 465 st->print(", ESI=" INTPTR_FORMAT, uc->Esi); | |
| 466 st->print(", EDI=" INTPTR_FORMAT, uc->Edi); | |
| 467 st->cr(); | |
| 468 st->print( "EIP=" INTPTR_FORMAT, uc->Eip); | |
| 469 st->print(", EFLAGS=" INTPTR_FORMAT, uc->EFlags); | |
| 470 #endif // AMD64 | |
| 471 st->cr(); | |
| 472 st->cr(); | |
| 473 | |
| 474 intptr_t *sp = (intptr_t *)uc->REG_SP; | |
| 475 st->print_cr("Top of Stack: (sp=" PTR_FORMAT ")", sp); | |
| 476 print_hex_dump(st, (address)sp, (address)(sp + 32), sizeof(intptr_t)); | |
| 477 st->cr(); | |
| 478 | |
| 479 // Note: it may be unsafe to inspect memory near pc. For example, pc may | |
| 480 // point to garbage if entry point in an nmethod is corrupted. Leave | |
| 481 // this at the end, and hope for the best. | |
| 482 address pc = (address)uc->REG_PC; | |
| 483 st->print_cr("Instructions: (pc=" PTR_FORMAT ")", pc); | |
| 1907 | 484 print_hex_dump(st, pc - 32, pc + 32, sizeof(char)); |
| 485 st->cr(); | |
| 486 } | |
| 487 | |
| 488 | |
| 489 void os::print_register_info(outputStream *st, void *context) { | |
| 490 if (context == NULL) return; | |
| 491 | |
| 492 CONTEXT* uc = (CONTEXT*)context; | |
| 493 | |
| 494 st->print_cr("Register to memory mapping:"); | |
| 495 st->cr(); | |
| 496 | |
| 497 // this is only for the "general purpose" registers | |
| 498 | |
| 499 #ifdef AMD64 | |
| 500 st->print("RAX="); print_location(st, uc->Rax); | |
| 501 st->print("RBX="); print_location(st, uc->Rbx); | |
| 502 st->print("RCX="); print_location(st, uc->Rcx); | |
| 503 st->print("RDX="); print_location(st, uc->Rdx); | |
| 504 st->print("RSP="); print_location(st, uc->Rsp); | |
| 505 st->print("RBP="); print_location(st, uc->Rbp); | |
| 506 st->print("RSI="); print_location(st, uc->Rsi); | |
| 507 st->print("RDI="); print_location(st, uc->Rdi); | |
| 508 st->print("R8 ="); print_location(st, uc->R8); | |
| 509 st->print("R9 ="); print_location(st, uc->R9); | |
| 510 st->print("R10="); print_location(st, uc->R10); | |
| 511 st->print("R11="); print_location(st, uc->R11); | |
| 512 st->print("R12="); print_location(st, uc->R12); | |
| 513 st->print("R13="); print_location(st, uc->R13); | |
| 514 st->print("R14="); print_location(st, uc->R14); | |
| 515 st->print("R15="); print_location(st, uc->R15); | |
| 516 #else | |
| 517 st->print("EAX="); print_location(st, uc->Eax); | |
| 518 st->print("EBX="); print_location(st, uc->Ebx); | |
| 519 st->print("ECX="); print_location(st, uc->Ecx); | |
| 520 st->print("EDX="); print_location(st, uc->Edx); | |
| 521 st->print("ESP="); print_location(st, uc->Esp); | |
| 522 st->print("EBP="); print_location(st, uc->Ebp); | |
| 523 st->print("ESI="); print_location(st, uc->Esi); | |
| 524 st->print("EDI="); print_location(st, uc->Edi); | |
| 525 #endif | |
| 526 | |
| 0 | 527 st->cr(); |
| 528 } | |
| 529 | |
| 530 extern "C" int SafeFetch32 (int * adr, int Err) { | |
| 531 int rv = Err ; | |
| 532 _try { | |
| 533 rv = *((volatile int *) adr) ; | |
| 534 } __except(EXCEPTION_EXECUTE_HANDLER) { | |
| 535 } | |
| 536 return rv ; | |
| 537 } | |
| 538 | |
| 539 extern "C" intptr_t SafeFetchN (intptr_t * adr, intptr_t Err) { | |
| 540 intptr_t rv = Err ; | |
| 541 _try { | |
| 542 rv = *((volatile intptr_t *) adr) ; | |
| 543 } __except(EXCEPTION_EXECUTE_HANDLER) { | |
| 544 } | |
| 545 return rv ; | |
| 546 } | |
| 547 | |
| 548 extern "C" int SpinPause () { | |
| 549 #ifdef AMD64 | |
| 550 return 0 ; | |
| 551 #else | |
| 552 // pause == rep:nop | |
| 553 // On systems that don't support pause a rep:nop | |
| 554 // is executed as a nop. The rep: prefix is ignored. | |
| 555 _asm { | |
| 556 pause ; | |
| 557 }; | |
| 558 return 1 ; | |
| 559 #endif // AMD64 | |
| 560 } | |
| 561 | |
| 562 | |
| 563 void os::setup_fpu() { | |
| 564 #ifndef AMD64 | |
| 565 int fpu_cntrl_word = StubRoutines::fpu_cntrl_wrd_std(); | |
| 566 __asm fldcw fpu_cntrl_word; | |
| 567 #endif // !AMD64 | |
| 568 } | |
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569 |
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570 #ifndef PRODUCT |
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571 void os::verify_stack_alignment() { |
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572 #ifdef AMD64 |
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573 assert(((intptr_t)os::current_stack_pointer() & (StackAlignmentInBytes-1)) == 0, "incorrect stack alignment"); |
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574 #endif |
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575 } |
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576 #endif |