Mercurial > hg > truffle
annotate src/os_cpu/windows_x86/vm/os_windows_x86.cpp @ 12199:38f750491293
8022335: Native stack walk while generating hs_err does not work on Windows x64
Summary: Use WinDbg API StackWalk64()
Reviewed-by: zgu, dholmes
| author | iklam |
|---|---|
| date | Fri, 06 Sep 2013 08:42:42 -0700 |
| parents | 980532a806a5 |
| children | cefad50507d8 de6a9e811145 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1999, 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 // no precompiled headers |
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26 #include "asm/macroAssembler.hpp" |
| 1972 | 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" | |
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32 #include "decoder_windows.hpp" |
| 1972 | 33 #include "interpreter/interpreter.hpp" |
| 34 #include "jvm_windows.h" | |
| 35 #include "memory/allocation.inline.hpp" | |
| 36 #include "mutex_windows.inline.hpp" | |
| 37 #include "nativeInst_x86.hpp" | |
| 38 #include "os_share_windows.hpp" | |
| 39 #include "prims/jniFastGetField.hpp" | |
| 40 #include "prims/jvm.h" | |
| 41 #include "prims/jvm_misc.hpp" | |
| 42 #include "runtime/arguments.hpp" | |
| 43 #include "runtime/extendedPC.hpp" | |
| 44 #include "runtime/frame.inline.hpp" | |
| 45 #include "runtime/interfaceSupport.hpp" | |
| 46 #include "runtime/java.hpp" | |
| 47 #include "runtime/javaCalls.hpp" | |
| 48 #include "runtime/mutexLocker.hpp" | |
| 49 #include "runtime/osThread.hpp" | |
| 50 #include "runtime/sharedRuntime.hpp" | |
| 51 #include "runtime/stubRoutines.hpp" | |
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52 #include "runtime/thread.inline.hpp" |
| 1972 | 53 #include "runtime/timer.hpp" |
| 54 #include "utilities/events.hpp" | |
| 55 #include "utilities/vmError.hpp" | |
| 56 | |
| 0 | 57 # include "unwind_windows_x86.hpp" |
| 58 #undef REG_SP | |
| 59 #undef REG_FP | |
| 60 #undef REG_PC | |
| 61 #ifdef AMD64 | |
| 62 #define REG_SP Rsp | |
| 63 #define REG_FP Rbp | |
| 64 #define REG_PC Rip | |
| 65 #else | |
| 66 #define REG_SP Esp | |
| 67 #define REG_FP Ebp | |
| 68 #define REG_PC Eip | |
| 69 #endif // AMD64 | |
| 70 | |
| 71 extern LONG WINAPI topLevelExceptionFilter(_EXCEPTION_POINTERS* ); | |
| 72 | |
| 73 // Install a win32 structured exception handler around thread. | |
| 74 void os::os_exception_wrapper(java_call_t f, JavaValue* value, methodHandle* method, JavaCallArguments* args, Thread* thread) { | |
| 75 __try { | |
| 76 | |
| 77 #ifndef AMD64 | |
| 78 // We store the current thread in this wrapperthread location | |
| 79 // and determine how far away this address is from the structured | |
| 80 // execption pointer that FS:[0] points to. This get_thread | |
| 81 // code can then get the thread pointer via FS. | |
| 82 // | |
| 83 // Warning: This routine must NEVER be inlined since we'd end up with | |
| 84 // multiple offsets. | |
| 85 // | |
| 86 volatile Thread* wrapperthread = thread; | |
| 87 | |
| 88 if ( ThreadLocalStorage::get_thread_ptr_offset() == 0 ) { | |
| 89 int thread_ptr_offset; | |
| 90 __asm { | |
| 91 lea eax, dword ptr wrapperthread; | |
| 92 sub eax, dword ptr FS:[0H]; | |
| 93 mov thread_ptr_offset, eax | |
| 94 }; | |
| 95 ThreadLocalStorage::set_thread_ptr_offset(thread_ptr_offset); | |
| 96 } | |
| 97 #ifdef ASSERT | |
| 98 // Verify that the offset hasn't changed since we initally captured | |
| 99 // it. This might happen if we accidentally ended up with an | |
| 100 // inlined version of this routine. | |
| 101 else { | |
| 102 int test_thread_ptr_offset; | |
| 103 __asm { | |
| 104 lea eax, dword ptr wrapperthread; | |
| 105 sub eax, dword ptr FS:[0H]; | |
| 106 mov test_thread_ptr_offset, eax | |
| 107 }; | |
| 108 assert(test_thread_ptr_offset == ThreadLocalStorage::get_thread_ptr_offset(), | |
| 109 "thread pointer offset from SEH changed"); | |
| 110 } | |
| 111 #endif // ASSERT | |
| 112 #endif // !AMD64 | |
| 113 | |
| 114 f(value, method, args, thread); | |
| 115 } __except(topLevelExceptionFilter((_EXCEPTION_POINTERS*)_exception_info())) { | |
| 116 // Nothing to do. | |
| 117 } | |
| 118 } | |
| 119 | |
| 120 #ifdef AMD64 | |
| 121 | |
| 122 // This is the language specific handler for exceptions | |
| 123 // originating from dynamically generated code. | |
| 124 // We call the standard structured exception handler | |
| 125 // We only expect Continued Execution since we cannot unwind | |
| 126 // from generated code. | |
| 127 LONG HandleExceptionFromCodeCache( | |
| 128 IN PEXCEPTION_RECORD ExceptionRecord, | |
| 129 IN ULONG64 EstablisherFrame, | |
| 130 IN OUT PCONTEXT ContextRecord, | |
| 131 IN OUT PDISPATCHER_CONTEXT DispatcherContext) { | |
| 132 EXCEPTION_POINTERS ep; | |
| 133 LONG result; | |
| 134 | |
| 135 ep.ExceptionRecord = ExceptionRecord; | |
| 136 ep.ContextRecord = ContextRecord; | |
| 137 | |
| 138 result = topLevelExceptionFilter(&ep); | |
| 139 | |
| 140 // We better only get a CONTINUE_EXECUTION from our handler | |
| 141 // since we don't have unwind information registered. | |
| 142 | |
| 143 guarantee( result == EXCEPTION_CONTINUE_EXECUTION, | |
| 144 "Unexpected result from topLevelExceptionFilter"); | |
| 145 | |
| 146 return(ExceptionContinueExecution); | |
| 147 } | |
| 148 | |
| 149 | |
| 150 // Structure containing the Windows Data Structures required | |
| 151 // to register our Code Cache exception handler. | |
| 152 // We put these in the CodeCache since the API requires | |
| 153 // all addresses in these structures are relative to the Code | |
| 154 // area registered with RtlAddFunctionTable. | |
| 155 typedef struct { | |
| 156 char ExceptionHandlerInstr[16]; // jmp HandleExceptionFromCodeCache | |
| 157 RUNTIME_FUNCTION rt; | |
| 158 UNWIND_INFO_EH_ONLY unw; | |
| 159 } DynamicCodeData, *pDynamicCodeData; | |
| 160 | |
| 161 #endif // AMD64 | |
| 162 // | |
| 163 // Register our CodeCache area with the OS so it will dispatch exceptions | |
| 164 // to our topLevelExceptionFilter when we take an exception in our | |
| 165 // dynamically generated code. | |
| 166 // | |
| 167 // Arguments: low and high are the address of the full reserved | |
| 168 // codeCache area | |
| 169 // | |
| 170 bool os::register_code_area(char *low, char *high) { | |
| 171 #ifdef AMD64 | |
| 172 | |
| 173 ResourceMark rm; | |
| 174 | |
| 175 pDynamicCodeData pDCD; | |
| 176 PRUNTIME_FUNCTION prt; | |
| 177 PUNWIND_INFO_EH_ONLY punwind; | |
| 178 | |
| 1748 | 179 BufferBlob* blob = BufferBlob::create("CodeCache Exception Handler", sizeof(DynamicCodeData)); |
| 180 CodeBuffer cb(blob); | |
| 0 | 181 MacroAssembler* masm = new MacroAssembler(&cb); |
| 182 pDCD = (pDynamicCodeData) masm->pc(); | |
| 183 | |
| 184 masm->jump(ExternalAddress((address)&HandleExceptionFromCodeCache)); | |
| 185 masm->flush(); | |
| 186 | |
| 187 // Create an Unwind Structure specifying no unwind info | |
| 188 // other than an Exception Handler | |
| 189 punwind = &pDCD->unw; | |
| 190 punwind->Version = 1; | |
| 191 punwind->Flags = UNW_FLAG_EHANDLER; | |
| 192 punwind->SizeOfProlog = 0; | |
| 193 punwind->CountOfCodes = 0; | |
| 194 punwind->FrameRegister = 0; | |
| 195 punwind->FrameOffset = 0; | |
| 196 punwind->ExceptionHandler = (char *)(&(pDCD->ExceptionHandlerInstr[0])) - | |
| 197 (char*)low; | |
| 198 punwind->ExceptionData[0] = 0; | |
| 199 | |
| 200 // This structure describes the covered dynamic code area. | |
| 201 // Addresses are relative to the beginning on the code cache area | |
| 202 prt = &pDCD->rt; | |
| 203 prt->BeginAddress = 0; | |
| 204 prt->EndAddress = (ULONG)(high - low); | |
| 205 prt->UnwindData = ((char *)punwind - low); | |
| 206 | |
| 207 guarantee(RtlAddFunctionTable(prt, 1, (ULONGLONG)low), | |
| 208 "Failed to register Dynamic Code Exception Handler with RtlAddFunctionTable"); | |
| 209 | |
| 210 #endif // AMD64 | |
| 211 return true; | |
| 212 } | |
| 213 | |
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214 void os::initialize_thread(Thread* thr) { |
| 0 | 215 // Nothing to do. |
| 216 } | |
| 217 | |
| 218 // Atomics and Stub Functions | |
| 219 | |
| 220 typedef jint xchg_func_t (jint, volatile jint*); | |
| 221 typedef intptr_t xchg_ptr_func_t (intptr_t, volatile intptr_t*); | |
| 222 typedef jint cmpxchg_func_t (jint, volatile jint*, jint); | |
| 223 typedef jlong cmpxchg_long_func_t (jlong, volatile jlong*, jlong); | |
| 224 typedef jint add_func_t (jint, volatile jint*); | |
| 225 typedef intptr_t add_ptr_func_t (intptr_t, volatile intptr_t*); | |
| 226 | |
| 227 #ifdef AMD64 | |
| 228 | |
| 229 jint os::atomic_xchg_bootstrap(jint exchange_value, volatile jint* dest) { | |
| 230 // try to use the stub: | |
| 231 xchg_func_t* func = CAST_TO_FN_PTR(xchg_func_t*, StubRoutines::atomic_xchg_entry()); | |
| 232 | |
| 233 if (func != NULL) { | |
| 234 os::atomic_xchg_func = func; | |
| 235 return (*func)(exchange_value, dest); | |
| 236 } | |
| 237 assert(Threads::number_of_threads() == 0, "for bootstrap only"); | |
| 238 | |
| 239 jint old_value = *dest; | |
| 240 *dest = exchange_value; | |
| 241 return old_value; | |
| 242 } | |
| 243 | |
| 244 intptr_t os::atomic_xchg_ptr_bootstrap(intptr_t exchange_value, volatile intptr_t* dest) { | |
| 245 // try to use the stub: | |
| 246 xchg_ptr_func_t* func = CAST_TO_FN_PTR(xchg_ptr_func_t*, StubRoutines::atomic_xchg_ptr_entry()); | |
| 247 | |
| 248 if (func != NULL) { | |
| 249 os::atomic_xchg_ptr_func = func; | |
| 250 return (*func)(exchange_value, dest); | |
| 251 } | |
| 252 assert(Threads::number_of_threads() == 0, "for bootstrap only"); | |
| 253 | |
| 254 intptr_t old_value = *dest; | |
| 255 *dest = exchange_value; | |
| 256 return old_value; | |
| 257 } | |
| 258 | |
| 259 | |
| 260 jint os::atomic_cmpxchg_bootstrap(jint exchange_value, volatile jint* dest, jint compare_value) { | |
| 261 // try to use the stub: | |
| 262 cmpxchg_func_t* func = CAST_TO_FN_PTR(cmpxchg_func_t*, StubRoutines::atomic_cmpxchg_entry()); | |
| 263 | |
| 264 if (func != NULL) { | |
| 265 os::atomic_cmpxchg_func = func; | |
| 266 return (*func)(exchange_value, dest, compare_value); | |
| 267 } | |
| 268 assert(Threads::number_of_threads() == 0, "for bootstrap only"); | |
| 269 | |
| 270 jint old_value = *dest; | |
| 271 if (old_value == compare_value) | |
| 272 *dest = exchange_value; | |
| 273 return old_value; | |
| 274 } | |
| 275 #endif // AMD64 | |
| 276 | |
| 277 jlong os::atomic_cmpxchg_long_bootstrap(jlong exchange_value, volatile jlong* dest, jlong compare_value) { | |
| 278 // try to use the stub: | |
| 279 cmpxchg_long_func_t* func = CAST_TO_FN_PTR(cmpxchg_long_func_t*, StubRoutines::atomic_cmpxchg_long_entry()); | |
| 280 | |
| 281 if (func != NULL) { | |
| 282 os::atomic_cmpxchg_long_func = func; | |
| 283 return (*func)(exchange_value, dest, compare_value); | |
| 284 } | |
| 285 assert(Threads::number_of_threads() == 0, "for bootstrap only"); | |
| 286 | |
| 287 jlong old_value = *dest; | |
| 288 if (old_value == compare_value) | |
| 289 *dest = exchange_value; | |
| 290 return old_value; | |
| 291 } | |
| 292 | |
| 293 #ifdef AMD64 | |
| 294 | |
| 295 jint os::atomic_add_bootstrap(jint add_value, volatile jint* dest) { | |
| 296 // try to use the stub: | |
| 297 add_func_t* func = CAST_TO_FN_PTR(add_func_t*, StubRoutines::atomic_add_entry()); | |
| 298 | |
| 299 if (func != NULL) { | |
| 300 os::atomic_add_func = func; | |
| 301 return (*func)(add_value, dest); | |
| 302 } | |
| 303 assert(Threads::number_of_threads() == 0, "for bootstrap only"); | |
| 304 | |
| 305 return (*dest) += add_value; | |
| 306 } | |
| 307 | |
| 308 intptr_t os::atomic_add_ptr_bootstrap(intptr_t add_value, volatile intptr_t* dest) { | |
| 309 // try to use the stub: | |
| 310 add_ptr_func_t* func = CAST_TO_FN_PTR(add_ptr_func_t*, StubRoutines::atomic_add_ptr_entry()); | |
| 311 | |
| 312 if (func != NULL) { | |
| 313 os::atomic_add_ptr_func = func; | |
| 314 return (*func)(add_value, dest); | |
| 315 } | |
| 316 assert(Threads::number_of_threads() == 0, "for bootstrap only"); | |
| 317 | |
| 318 return (*dest) += add_value; | |
| 319 } | |
| 320 | |
| 321 xchg_func_t* os::atomic_xchg_func = os::atomic_xchg_bootstrap; | |
| 322 xchg_ptr_func_t* os::atomic_xchg_ptr_func = os::atomic_xchg_ptr_bootstrap; | |
| 323 cmpxchg_func_t* os::atomic_cmpxchg_func = os::atomic_cmpxchg_bootstrap; | |
| 324 add_func_t* os::atomic_add_func = os::atomic_add_bootstrap; | |
| 325 add_ptr_func_t* os::atomic_add_ptr_func = os::atomic_add_ptr_bootstrap; | |
| 326 | |
| 327 #endif // AMD64 | |
| 328 | |
| 329 cmpxchg_long_func_t* os::atomic_cmpxchg_long_func = os::atomic_cmpxchg_long_bootstrap; | |
| 330 | |
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331 #ifdef AMD64 |
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332 /* |
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333 * Windows/x64 does not use stack frames the way expected by Java: |
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334 * [1] in most cases, there is no frame pointer. All locals are addressed via RSP |
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335 * [2] in rare cases, when alloca() is used, a frame pointer is used, but this may |
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336 * not be RBP. |
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337 * See http://msdn.microsoft.com/en-us/library/ew5tede7.aspx |
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338 * |
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339 * So it's not possible to print the native stack using the |
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340 * while (...) {... fr = os::get_sender_for_C_frame(&fr); } |
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341 * loop in vmError.cpp. We need to roll our own loop. |
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342 */ |
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343 bool os::platform_print_native_stack(outputStream* st, void* context, |
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344 char *buf, int buf_size) |
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345 { |
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346 CONTEXT ctx; |
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347 if (context != NULL) { |
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348 memcpy(&ctx, context, sizeof(ctx)); |
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349 } else { |
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350 RtlCaptureContext(&ctx); |
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351 } |
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352 |
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353 st->print_cr("Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)"); |
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354 |
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355 STACKFRAME stk; |
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356 memset(&stk, 0, sizeof(stk)); |
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357 stk.AddrStack.Offset = ctx.Rsp; |
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358 stk.AddrStack.Mode = AddrModeFlat; |
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359 stk.AddrFrame.Offset = ctx.Rbp; |
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360 stk.AddrFrame.Mode = AddrModeFlat; |
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361 stk.AddrPC.Offset = ctx.Rip; |
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362 stk.AddrPC.Mode = AddrModeFlat; |
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363 |
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364 int count = 0; |
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365 address lastpc = 0; |
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366 while (count++ < StackPrintLimit) { |
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367 intptr_t* sp = (intptr_t*)stk.AddrStack.Offset; |
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368 intptr_t* fp = (intptr_t*)stk.AddrFrame.Offset; // NOT necessarily the same as ctx.Rbp! |
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369 address pc = (address)stk.AddrPC.Offset; |
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370 |
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371 if (pc != NULL && sp != NULL && fp != NULL) { |
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372 if (count == 2 && lastpc == pc) { |
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373 // Skip it -- StackWalk64() may return the same PC |
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374 // (but different SP) on the first try. |
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375 } else { |
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376 // Don't try to create a frame(sp, fp, pc) -- on WinX64, stk.AddrFrame |
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377 // may not contain what Java expects, and may cause the frame() constructor |
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378 // to crash. Let's just print out the symbolic address. |
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379 frame::print_C_frame(st, buf, buf_size, pc); |
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380 st->cr(); |
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381 } |
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382 lastpc = pc; |
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383 } else { |
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384 break; |
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385 } |
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|
386 |
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387 PVOID p = WindowsDbgHelp::SymFunctionTableAccess64(GetCurrentProcess(), stk.AddrPC.Offset); |
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388 if (!p) { |
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389 // StackWalk64() can't handle this PC. Calling StackWalk64 again may cause crash. |
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390 break; |
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391 } |
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392 |
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393 BOOL result = WindowsDbgHelp::StackWalk64( |
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394 IMAGE_FILE_MACHINE_AMD64, // __in DWORD MachineType, |
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395 GetCurrentProcess(), // __in HANDLE hProcess, |
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396 GetCurrentThread(), // __in HANDLE hThread, |
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397 &stk, // __inout LP STACKFRAME64 StackFrame, |
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398 &ctx, // __inout PVOID ContextRecord, |
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399 NULL, // __in_opt PREAD_PROCESS_MEMORY_ROUTINE64 ReadMemoryRoutine, |
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400 WindowsDbgHelp::pfnSymFunctionTableAccess64(), |
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401 // __in_opt PFUNCTION_TABLE_ACCESS_ROUTINE64 FunctionTableAccessRoutine, |
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402 WindowsDbgHelp::pfnSymGetModuleBase64(), |
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403 // __in_opt PGET_MODULE_BASE_ROUTINE64 GetModuleBaseRoutine, |
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404 NULL); // __in_opt PTRANSLATE_ADDRESS_ROUTINE64 TranslateAddress |
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405 |
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406 if (!result) { |
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407 break; |
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408 } |
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409 } |
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|
410 if (count > StackPrintLimit) { |
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411 st->print_cr("...<more frames>..."); |
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412 } |
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413 st->cr(); |
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414 |
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415 return true; |
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416 } |
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417 #endif // AMD64 |
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418 |
| 0 | 419 ExtendedPC os::fetch_frame_from_context(void* ucVoid, |
| 420 intptr_t** ret_sp, intptr_t** ret_fp) { | |
| 421 | |
| 422 ExtendedPC epc; | |
| 423 CONTEXT* uc = (CONTEXT*)ucVoid; | |
| 424 | |
| 425 if (uc != NULL) { | |
| 426 epc = ExtendedPC((address)uc->REG_PC); | |
| 427 if (ret_sp) *ret_sp = (intptr_t*)uc->REG_SP; | |
| 428 if (ret_fp) *ret_fp = (intptr_t*)uc->REG_FP; | |
| 429 } else { | |
| 430 // construct empty ExtendedPC for return value checking | |
| 431 epc = ExtendedPC(NULL); | |
| 432 if (ret_sp) *ret_sp = (intptr_t *)NULL; | |
| 433 if (ret_fp) *ret_fp = (intptr_t *)NULL; | |
| 434 } | |
| 435 | |
| 436 return epc; | |
| 437 } | |
| 438 | |
| 439 frame os::fetch_frame_from_context(void* ucVoid) { | |
| 440 intptr_t* sp; | |
| 441 intptr_t* fp; | |
| 442 ExtendedPC epc = fetch_frame_from_context(ucVoid, &sp, &fp); | |
| 443 return frame(sp, fp, epc.pc()); | |
| 444 } | |
| 445 | |
| 446 // VC++ does not save frame pointer on stack in optimized build. It | |
| 447 // can be turned off by /Oy-. If we really want to walk C frames, | |
| 448 // we can use the StackWalk() API. | |
| 449 frame os::get_sender_for_C_frame(frame* fr) { | |
| 450 return frame(fr->sender_sp(), fr->link(), fr->sender_pc()); | |
| 451 } | |
| 452 | |
|
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453 #ifndef AMD64 |
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454 // Returns an estimate of the current stack pointer. Result must be guaranteed |
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455 // to point into the calling threads stack, and be no lower than the current |
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456 // stack pointer. |
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457 address os::current_stack_pointer() { |
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458 int dummy; |
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459 address sp = (address)&dummy; |
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460 return sp; |
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461 } |
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462 #else |
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463 // Returns the current stack pointer. Accurate value needed for |
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464 // os::verify_stack_alignment(). |
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465 address os::current_stack_pointer() { |
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466 typedef address get_sp_func(); |
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467 get_sp_func* func = CAST_TO_FN_PTR(get_sp_func*, |
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468 StubRoutines::x86::get_previous_sp_entry()); |
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469 return (*func)(); |
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470 } |
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|
471 #endif |
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|
472 |
| 0 | 473 |
| 474 #ifndef AMD64 | |
| 475 intptr_t* _get_previous_fp() { | |
| 476 intptr_t **frameptr; | |
| 477 __asm { | |
| 478 mov frameptr, ebp | |
| 479 }; | |
| 480 return *frameptr; | |
| 481 } | |
| 482 #endif // !AMD64 | |
| 483 | |
| 484 frame os::current_frame() { | |
| 485 | |
| 486 #ifdef AMD64 | |
| 487 // apparently _asm not supported on windows amd64 | |
| 488 typedef intptr_t* get_fp_func (); | |
| 489 get_fp_func* func = CAST_TO_FN_PTR(get_fp_func*, | |
| 304 | 490 StubRoutines::x86::get_previous_fp_entry()); |
|
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491 if (func == NULL) return frame(); |
| 0 | 492 intptr_t* fp = (*func)(); |
|
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493 if (fp == NULL) { |
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494 return frame(); |
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495 } |
| 0 | 496 #else |
| 497 intptr_t* fp = _get_previous_fp(); | |
| 498 #endif // AMD64 | |
| 499 | |
| 500 frame myframe((intptr_t*)os::current_stack_pointer(), | |
| 501 (intptr_t*)fp, | |
| 502 CAST_FROM_FN_PTR(address, os::current_frame)); | |
| 503 if (os::is_first_C_frame(&myframe)) { | |
| 504 // stack is not walkable | |
|
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|
505 return frame(); |
| 0 | 506 } else { |
| 507 return os::get_sender_for_C_frame(&myframe); | |
| 508 } | |
| 509 } | |
| 510 | |
| 511 void os::print_context(outputStream *st, void *context) { | |
| 512 if (context == NULL) return; | |
| 513 | |
| 514 CONTEXT* uc = (CONTEXT*)context; | |
| 515 | |
| 516 st->print_cr("Registers:"); | |
| 517 #ifdef AMD64 | |
|
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518 st->print( "RAX=" INTPTR_FORMAT, uc->Rax); |
|
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519 st->print(", RBX=" INTPTR_FORMAT, uc->Rbx); |
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520 st->print(", RCX=" INTPTR_FORMAT, uc->Rcx); |
|
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521 st->print(", RDX=" INTPTR_FORMAT, uc->Rdx); |
|
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522 st->cr(); |
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523 st->print( "RSP=" INTPTR_FORMAT, uc->Rsp); |
|
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524 st->print(", RBP=" INTPTR_FORMAT, uc->Rbp); |
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525 st->print(", RSI=" INTPTR_FORMAT, uc->Rsi); |
|
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526 st->print(", RDI=" INTPTR_FORMAT, uc->Rdi); |
|
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|
527 st->cr(); |
| 1907 | 528 st->print( "R8 =" INTPTR_FORMAT, uc->R8); |
| 529 st->print(", R9 =" INTPTR_FORMAT, uc->R9); | |
|
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530 st->print(", R10=" INTPTR_FORMAT, uc->R10); |
|
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|
531 st->print(", R11=" INTPTR_FORMAT, uc->R11); |
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532 st->cr(); |
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533 st->print( "R12=" INTPTR_FORMAT, uc->R12); |
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534 st->print(", R13=" INTPTR_FORMAT, uc->R13); |
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535 st->print(", R14=" INTPTR_FORMAT, uc->R14); |
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536 st->print(", R15=" INTPTR_FORMAT, uc->R15); |
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537 st->cr(); |
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538 st->print( "RIP=" INTPTR_FORMAT, uc->Rip); |
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|
539 st->print(", EFLAGS=" INTPTR_FORMAT, uc->EFlags); |
| 0 | 540 #else |
| 541 st->print( "EAX=" INTPTR_FORMAT, uc->Eax); | |
| 542 st->print(", EBX=" INTPTR_FORMAT, uc->Ebx); | |
| 543 st->print(", ECX=" INTPTR_FORMAT, uc->Ecx); | |
| 544 st->print(", EDX=" INTPTR_FORMAT, uc->Edx); | |
| 545 st->cr(); | |
| 546 st->print( "ESP=" INTPTR_FORMAT, uc->Esp); | |
| 547 st->print(", EBP=" INTPTR_FORMAT, uc->Ebp); | |
| 548 st->print(", ESI=" INTPTR_FORMAT, uc->Esi); | |
| 549 st->print(", EDI=" INTPTR_FORMAT, uc->Edi); | |
| 550 st->cr(); | |
| 551 st->print( "EIP=" INTPTR_FORMAT, uc->Eip); | |
| 552 st->print(", EFLAGS=" INTPTR_FORMAT, uc->EFlags); | |
| 553 #endif // AMD64 | |
| 554 st->cr(); | |
| 555 st->cr(); | |
| 556 | |
| 557 intptr_t *sp = (intptr_t *)uc->REG_SP; | |
| 558 st->print_cr("Top of Stack: (sp=" PTR_FORMAT ")", sp); | |
| 559 print_hex_dump(st, (address)sp, (address)(sp + 32), sizeof(intptr_t)); | |
| 560 st->cr(); | |
| 561 | |
| 562 // Note: it may be unsafe to inspect memory near pc. For example, pc may | |
| 563 // point to garbage if entry point in an nmethod is corrupted. Leave | |
| 564 // this at the end, and hope for the best. | |
| 565 address pc = (address)uc->REG_PC; | |
| 566 st->print_cr("Instructions: (pc=" PTR_FORMAT ")", pc); | |
| 1907 | 567 print_hex_dump(st, pc - 32, pc + 32, sizeof(char)); |
| 568 st->cr(); | |
| 569 } | |
| 570 | |
| 571 | |
| 572 void os::print_register_info(outputStream *st, void *context) { | |
| 573 if (context == NULL) return; | |
| 574 | |
| 575 CONTEXT* uc = (CONTEXT*)context; | |
| 576 | |
| 577 st->print_cr("Register to memory mapping:"); | |
| 578 st->cr(); | |
| 579 | |
| 580 // this is only for the "general purpose" registers | |
| 581 | |
| 582 #ifdef AMD64 | |
| 583 st->print("RAX="); print_location(st, uc->Rax); | |
| 584 st->print("RBX="); print_location(st, uc->Rbx); | |
| 585 st->print("RCX="); print_location(st, uc->Rcx); | |
| 586 st->print("RDX="); print_location(st, uc->Rdx); | |
| 587 st->print("RSP="); print_location(st, uc->Rsp); | |
| 588 st->print("RBP="); print_location(st, uc->Rbp); | |
| 589 st->print("RSI="); print_location(st, uc->Rsi); | |
| 590 st->print("RDI="); print_location(st, uc->Rdi); | |
| 591 st->print("R8 ="); print_location(st, uc->R8); | |
| 592 st->print("R9 ="); print_location(st, uc->R9); | |
| 593 st->print("R10="); print_location(st, uc->R10); | |
| 594 st->print("R11="); print_location(st, uc->R11); | |
| 595 st->print("R12="); print_location(st, uc->R12); | |
| 596 st->print("R13="); print_location(st, uc->R13); | |
| 597 st->print("R14="); print_location(st, uc->R14); | |
| 598 st->print("R15="); print_location(st, uc->R15); | |
| 599 #else | |
| 600 st->print("EAX="); print_location(st, uc->Eax); | |
| 601 st->print("EBX="); print_location(st, uc->Ebx); | |
| 602 st->print("ECX="); print_location(st, uc->Ecx); | |
| 603 st->print("EDX="); print_location(st, uc->Edx); | |
| 604 st->print("ESP="); print_location(st, uc->Esp); | |
| 605 st->print("EBP="); print_location(st, uc->Ebp); | |
| 606 st->print("ESI="); print_location(st, uc->Esi); | |
| 607 st->print("EDI="); print_location(st, uc->Edi); | |
| 608 #endif | |
| 609 | |
| 0 | 610 st->cr(); |
| 611 } | |
| 612 | |
| 613 extern "C" int SpinPause () { | |
| 614 #ifdef AMD64 | |
| 615 return 0 ; | |
| 616 #else | |
| 617 // pause == rep:nop | |
| 618 // On systems that don't support pause a rep:nop | |
| 619 // is executed as a nop. The rep: prefix is ignored. | |
| 620 _asm { | |
| 621 pause ; | |
| 622 }; | |
| 623 return 1 ; | |
| 624 #endif // AMD64 | |
| 625 } | |
| 626 | |
| 627 | |
| 628 void os::setup_fpu() { | |
| 629 #ifndef AMD64 | |
| 630 int fpu_cntrl_word = StubRoutines::fpu_cntrl_wrd_std(); | |
| 631 __asm fldcw fpu_cntrl_word; | |
| 632 #endif // !AMD64 | |
| 633 } | |
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634 |
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635 #ifndef PRODUCT |
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636 void os::verify_stack_alignment() { |
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637 #ifdef AMD64 |
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638 assert(((intptr_t)os::current_stack_pointer() & (StackAlignmentInBytes-1)) == 0, "incorrect stack alignment"); |
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639 #endif |
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640 } |
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641 #endif |