Mercurial > hg > truffle
annotate src/os_cpu/windows_x86/vm/os_windows_x86.cpp @ 21408:32ca2353accf
Truffle/Instrumentation: fix NPE hazard
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Sun, 17 May 2015 20:47:04 -0700 |
parents | 7848fc12602b |
children |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2013, 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)(); |
12199
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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 // The current_stack_pointer() calls generated get_previous_sp stub routine. |
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639 // Only enable the assert after the routine becomes available. |
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640 if (StubRoutines::code1() != NULL) { |
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641 assert(((intptr_t)os::current_stack_pointer() & (StackAlignmentInBytes-1)) == 0, "incorrect stack alignment"); |
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642 } |
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643 #endif |
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644 } |
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645 #endif |