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Release 0.9.61.
[wine/gsoc-2012-control.git] / dlls / ntdll / tests / exception.c
blobd6168eeb9c568114442c05f68fabbb05f256ff9d
1 /*
2 * Unit test suite for ntdll exceptions
3 *
4 * Copyright 2005 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include <stdarg.h>
22 #include <stdio.h>
23
24 #ifndef _WIN32_WINNT
25 #define _WIN32_WINNT 0x500 /* For NTSTATUS */
26 #endif
27
28 #include "ntstatus.h"
29 #define WIN32_NO_STATUS
30 #include "windef.h"
31 #include "winbase.h"
32 #include "winnt.h"
33 #include "winreg.h"
34 #include "winternl.h"
35 #include "excpt.h"
36 #include "wine/test.h"
37
38 #ifdef __i386__
39 static int my_argc;
40 static char** my_argv;
41 static int test_stage;
42
43 static struct _TEB * (WINAPI *pNtCurrentTeb)(void);
44 static NTSTATUS (WINAPI *pNtGetContextThread)(HANDLE,CONTEXT*);
45 static NTSTATUS (WINAPI *pNtSetContextThread)(HANDLE,CONTEXT*);
46 static NTSTATUS (WINAPI *pRtlRaiseException)(EXCEPTION_RECORD *rec);
47 static PVOID (WINAPI *pRtlAddVectoredExceptionHandler)(ULONG first, PVECTORED_EXCEPTION_HANDLER func);
48 static ULONG (WINAPI *pRtlRemoveVectoredExceptionHandler)(PVOID handler);
49 static NTSTATUS (WINAPI *pNtReadVirtualMemory)(HANDLE, const void*, void*, SIZE_T, SIZE_T*);
50 static NTSTATUS (WINAPI *pNtTerminateProcess)(HANDLE handle, LONG exit_code);
51 static void *code_mem;
52
53 /* Test various instruction combinations that cause a protection fault on the i386,
54 * and check what the resulting exception looks like.
55 */
56
57 static const struct exception
58 {
59 BYTE code[18]; /* asm code */
60 BYTE offset; /* offset of faulting instruction */
61 BYTE length; /* length of faulting instruction */
62 NTSTATUS status; /* expected status code */
63 DWORD nb_params; /* expected number of parameters */
64 DWORD params[4]; /* expected parameters */
65 } exceptions[] =
66 {
67 /* test some privileged instructions */
68 { { 0xfb, 0xc3 }, /* sti; ret */
69 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
70 { { 0x6c, 0xc3 }, /* insb (%dx); ret */
71 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
72 { { 0x6d, 0xc3 }, /* insl (%dx); ret */
73 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
74 { { 0x6e, 0xc3 }, /* outsb (%dx); ret */
75 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
76 { { 0x6f, 0xc3 }, /* outsl (%dx); ret */
77 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
78 { { 0xe4, 0x11, 0xc3 }, /* inb $0x11,%al; ret */
79 0, 2, STATUS_PRIVILEGED_INSTRUCTION, 0 },
80 { { 0xe5, 0x11, 0xc3 }, /* inl $0x11,%eax; ret */
81 0, 2, STATUS_PRIVILEGED_INSTRUCTION, 0 },
82 { { 0xe6, 0x11, 0xc3 }, /* outb %al,$0x11; ret */
83 0, 2, STATUS_PRIVILEGED_INSTRUCTION, 0 },
84 { { 0xe7, 0x11, 0xc3 }, /* outl %eax,$0x11; ret */
85 0, 2, STATUS_PRIVILEGED_INSTRUCTION, 0 },
86 { { 0xed, 0xc3 }, /* inl (%dx),%eax; ret */
87 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
88 { { 0xee, 0xc3 }, /* outb %al,(%dx); ret */
89 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
90 { { 0xef, 0xc3 }, /* outl %eax,(%dx); ret */
91 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
92 { { 0xf4, 0xc3 }, /* hlt; ret */
93 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
94 { { 0xfa, 0xc3 }, /* cli; ret */
95 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
96
97 /* test long jump to invalid selector */
98 { { 0xea, 0, 0, 0, 0, 0, 0, 0xc3 }, /* ljmp $0,$0; ret */
99 0, 7, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
100
101 /* test iret to invalid selector */
102 { { 0x6a, 0x00, 0x6a, 0x00, 0x6a, 0x00, 0xcf, 0x83, 0xc4, 0x0c, 0xc3 },
103 /* pushl $0; pushl $0; pushl $0; iret; addl $12,%esp; ret */
104 6, 1, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
105
106 /* test loading an invalid selector */
107 { { 0xb8, 0xef, 0xbe, 0x00, 0x00, 0x8e, 0xe8, 0xc3 }, /* mov $beef,%ax; mov %ax,%gs; ret */
108 5, 2, STATUS_ACCESS_VIOLATION, 2, { 0, 0xbee8 } },
109
110 /* test accessing a zero selector */
111 { { 0x06, 0x31, 0xc0, 0x8e, 0xc0, 0x26, 0xa1, 0, 0, 0, 0, 0x07, 0xc3 },
112 /* push %es; xor %eax,%eax; mov %ax,%es; mov %es:(0),%ax; pop %es */
113 5, 6, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
114
115 /* test moving %cs -> %ss */
116 { { 0x0e, 0x17, 0x58, 0xc3 }, /* pushl %cs; popl %ss; popl %eax; ret */
117 1, 1, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
118
119 /* test overlong instruction (limit is 16 bytes) */
120 { { 0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0xfa,0xc3 },
121 0, 16, STATUS_ILLEGAL_INSTRUCTION, 0 },
122 { { 0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0xfa,0xc3 },
123 0, 15, STATUS_PRIVILEGED_INSTRUCTION, 0 },
124
125 /* test invalid interrupt */
126 { { 0xcd, 0xff, 0xc3 }, /* int $0xff; ret */
127 0, 2, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
128
129 /* test moves to/from Crx */
130 { { 0x0f, 0x20, 0xc0, 0xc3 }, /* movl %cr0,%eax; ret */
131 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
132 { { 0x0f, 0x20, 0xe0, 0xc3 }, /* movl %cr4,%eax; ret */
133 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
134 { { 0x0f, 0x22, 0xc0, 0xc3 }, /* movl %eax,%cr0; ret */
135 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
136 { { 0x0f, 0x22, 0xe0, 0xc3 }, /* movl %eax,%cr4; ret */
137 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
138
139 /* test moves to/from Drx */
140 { { 0x0f, 0x21, 0xc0, 0xc3 }, /* movl %dr0,%eax; ret */
141 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
142 { { 0x0f, 0x21, 0xc8, 0xc3 }, /* movl %dr1,%eax; ret */
143 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
144 { { 0x0f, 0x21, 0xf8, 0xc3 }, /* movl %dr7,%eax; ret */
145 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
146 { { 0x0f, 0x23, 0xc0, 0xc3 }, /* movl %eax,%dr0; ret */
147 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
148 { { 0x0f, 0x23, 0xc8, 0xc3 }, /* movl %eax,%dr1; ret */
149 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
150 { { 0x0f, 0x23, 0xf8, 0xc3 }, /* movl %eax,%dr7; ret */
151 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
152
153 /* test memory reads */
154 { { 0xa1, 0xfc, 0xff, 0xff, 0xff, 0xc3 }, /* movl 0xfffffffc,%eax; ret */
155 0, 5, STATUS_ACCESS_VIOLATION, 2, { 0, 0xfffffffc } },
156 { { 0xa1, 0xfd, 0xff, 0xff, 0xff, 0xc3 }, /* movl 0xfffffffd,%eax; ret */
157 0, 5, STATUS_ACCESS_VIOLATION, 2, { 0, 0xfffffffd } },
158 { { 0xa1, 0xfe, 0xff, 0xff, 0xff, 0xc3 }, /* movl 0xfffffffe,%eax; ret */
159 0, 5, STATUS_ACCESS_VIOLATION, 2, { 0, 0xfffffffe } },
160 { { 0xa1, 0xff, 0xff, 0xff, 0xff, 0xc3 }, /* movl 0xffffffff,%eax; ret */
161 0, 5, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
162
163 /* test memory writes */
164 { { 0xa3, 0xfc, 0xff, 0xff, 0xff, 0xc3 }, /* movl %eax,0xfffffffc; ret */
165 0, 5, STATUS_ACCESS_VIOLATION, 2, { 1, 0xfffffffc } },
166 { { 0xa3, 0xfd, 0xff, 0xff, 0xff, 0xc3 }, /* movl %eax,0xfffffffd; ret */
167 0, 5, STATUS_ACCESS_VIOLATION, 2, { 1, 0xfffffffd } },
168 { { 0xa3, 0xfe, 0xff, 0xff, 0xff, 0xc3 }, /* movl %eax,0xfffffffe; ret */
169 0, 5, STATUS_ACCESS_VIOLATION, 2, { 1, 0xfffffffe } },
170 { { 0xa3, 0xff, 0xff, 0xff, 0xff, 0xc3 }, /* movl %eax,0xffffffff; ret */
171 0, 5, STATUS_ACCESS_VIOLATION, 2, { 1, 0xffffffff } },
172 };
173
174 static int got_exception;
175 static BOOL have_vectored_api;
176
177 static void run_exception_test(void *handler, const void* context,
178 const void *code, unsigned int code_size)
179 {
180 struct {
181 EXCEPTION_REGISTRATION_RECORD frame;
182 const void *context;
183 } exc_frame;
184 void (*func)(void) = code_mem;
185
186 exc_frame.frame.Handler = handler;
187 exc_frame.frame.Prev = pNtCurrentTeb()->Tib.ExceptionList;
188 exc_frame.context = context;
189
190 memcpy(code_mem, code, code_size);
191
192 pNtCurrentTeb()->Tib.ExceptionList = &exc_frame.frame;
193 func();
194 pNtCurrentTeb()->Tib.ExceptionList = exc_frame.frame.Prev;
195 }
196
197 LONG CALLBACK rtlraiseexception_vectored_handler(EXCEPTION_POINTERS *ExceptionInfo)
198 {
199 PCONTEXT context = ExceptionInfo->ContextRecord;
200 PEXCEPTION_RECORD rec = ExceptionInfo->ExceptionRecord;
201 trace("vect. handler %08x addr:%p context.Eip:%x\n", rec->ExceptionCode,
202 rec->ExceptionAddress, context->Eip);
203
204 todo_wine {
205 ok(rec->ExceptionAddress == (char *)code_mem + 0xb, "ExceptionAddress at %p instead of %p\n",
206 rec->ExceptionAddress, (char *)code_mem + 0xb);
207
208 if (pNtCurrentTeb()->Peb->BeingDebugged)
209 ok((void *)context->Eax == pRtlRaiseException, "debugger managed to modify Eax to %x should be %p\n",
210 context->Eax, pRtlRaiseException);
211 }
212
213 /* check that context.Eip is fixed up only for EXCEPTION_BREAKPOINT
214 * even if raised by RtlRaiseException
215 */
216 if(rec->ExceptionCode == EXCEPTION_BREAKPOINT)
217 {
218 ok(context->Eip == (DWORD)code_mem + 0xa, "Eip at %x instead of %x\n",
219 context->Eip, (DWORD)code_mem + 0xa);
220 }
221 else
222 {
223 ok(context->Eip == (DWORD)code_mem + 0xb, "Eip at %x instead of %x\n",
224 context->Eip, (DWORD)code_mem + 0xb);
225 }
226
227 /* test if context change is preserved from vectored handler to stack handlers */
228 context->Eax = 0xf00f00f0;
229 return EXCEPTION_CONTINUE_SEARCH;
230 }
231
232 static DWORD rtlraiseexception_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
233 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
234 {
235 trace( "exception: %08x flags:%x addr:%p context: Eip:%x\n",
236 rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress, context->Eip );
237
238 todo_wine {
239 ok(rec->ExceptionAddress == (char *)code_mem + 0xb, "ExceptionAddress at %p instead of %p\n",
240 rec->ExceptionAddress, (char *)code_mem + 0xb);
241 }
242
243 /* check that context.Eip is fixed up only for EXCEPTION_BREAKPOINT
244 * even if raised by RtlRaiseException
245 */
246 if(rec->ExceptionCode == EXCEPTION_BREAKPOINT)
247 {
248 ok(context->Eip == (DWORD)code_mem + 0xa, "Eip at %x instead of %x\n",
249 context->Eip, (DWORD)code_mem + 0xa);
250 }
251 else
252 {
253 ok(context->Eip == (DWORD)code_mem + 0xb, "Eip at %x instead of %x\n",
254 context->Eip, (DWORD)code_mem + 0xb);
255 }
256
257 if(have_vectored_api)
258 ok(context->Eax == 0xf00f00f0, "Eax is %x, should have been set to 0xf00f00f0 in vectored handler\n",
259 context->Eax);
260
261 /* give the debugger a chance to examine the state a second time */
262 /* without the exception handler changing Eip */
263 if (test_stage == 2)
264 return ExceptionContinueSearch;
265
266 /* Eip in context is decreased by 1
267 * Increase it again, else execution will continue in the middle of a instruction */
268 if(rec->ExceptionCode == EXCEPTION_BREAKPOINT && (context->Eip == (DWORD)code_mem + 0xa))
269 context->Eip += 1;
270 return ExceptionContinueExecution;
271 }
272
273
274 static const BYTE call_one_arg_code[] = {
275 0x8b, 0x44, 0x24, 0x08, /* mov 0x8(%esp),%eax */
276 0x50, /* push %eax */
277 0x8b, 0x44, 0x24, 0x08, /* mov 0x8(%esp),%eax */
278 0xff, 0xd0, /* call *%eax */
279 0x90, /* nop */
280 0x90, /* nop */
281 0x90, /* nop */
282 0x90, /* nop */
283 0xc3, /* ret */
284 };
285
286
287 static void run_rtlraiseexception_test(DWORD exceptioncode)
288 {
289 EXCEPTION_REGISTRATION_RECORD frame;
290 EXCEPTION_RECORD record;
291 PVOID vectored_handler = NULL;
292
293 void (*func)(void* function, EXCEPTION_RECORD* record) = code_mem;
294
295 record.ExceptionCode = exceptioncode;
296 record.ExceptionFlags = 0;
297 record.ExceptionRecord = NULL;
298 record.ExceptionAddress = NULL; /* does not matter, copied return address */
299 record.NumberParameters = 0;
300
301 frame.Handler = rtlraiseexception_handler;
302 frame.Prev = pNtCurrentTeb()->Tib.ExceptionList;
303
304 memcpy(code_mem, call_one_arg_code, sizeof(call_one_arg_code));
305
306 pNtCurrentTeb()->Tib.ExceptionList = &frame;
307 if (have_vectored_api)
308 {
309 vectored_handler = pRtlAddVectoredExceptionHandler(TRUE, &rtlraiseexception_vectored_handler);
310 ok(vectored_handler != 0, "RtlAddVectoredExceptionHandler failed\n");
311 }
312
313 func(pRtlRaiseException, &record);
314
315 if (have_vectored_api)
316 pRtlRemoveVectoredExceptionHandler(vectored_handler);
317 pNtCurrentTeb()->Tib.ExceptionList = frame.Prev;
318 }
319
320 static void test_rtlraiseexception(void)
321 {
322 if (!pRtlRaiseException)
323 {
324 skip("RtlRaiseException not found\n");
325 return;
326 }
327
328 /* test without debugger */
329 run_rtlraiseexception_test(0x12345);
330 run_rtlraiseexception_test(EXCEPTION_BREAKPOINT);
331 run_rtlraiseexception_test(EXCEPTION_INVALID_HANDLE);
332 }
333
334 static DWORD handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
335 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
336 {
337 const struct exception *except = *(const struct exception **)(frame + 1);
338 unsigned int i, entry = except - exceptions;
339
340 got_exception++;
341 trace( "exception: %x flags:%x addr:%p\n",
342 rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress );
343
344 ok( rec->ExceptionCode == except->status,
345 "%u: Wrong exception code %x/%x\n", entry, rec->ExceptionCode, except->status );
346 ok( rec->ExceptionAddress == (char*)code_mem + except->offset,
347 "%u: Wrong exception address %p/%p\n", entry,
348 rec->ExceptionAddress, (char*)code_mem + except->offset );
349
350 ok( rec->NumberParameters == except->nb_params,
351 "%u: Wrong number of parameters %u/%u\n", entry, rec->NumberParameters, except->nb_params );
352
353 /* Most CPUs (except Intel Core apparently) report a segment limit violation */
354 /* instead of page faults for accesses beyond 0xffffffff */
355 if (except->nb_params == 2 && except->params[1] >= 0xfffffffd)
356 {
357 if (rec->ExceptionInformation[0] == 0 && rec->ExceptionInformation[1] == 0xffffffff)
358 goto skip_params;
359 }
360
361 for (i = 0; i < rec->NumberParameters; i++)
362 ok( rec->ExceptionInformation[i] == except->params[i],
363 "%u: Wrong parameter %d: %lx/%x\n",
364 entry, i, rec->ExceptionInformation[i], except->params[i] );
365
366 skip_params:
367 /* don't handle exception if it's not the address we expected */
368 if (rec->ExceptionAddress != (char*)code_mem + except->offset) return ExceptionContinueSearch;
369
370 context->Eip += except->length;
371 return ExceptionContinueExecution;
372 }
373
374 static void test_prot_fault(void)
375 {
376 unsigned int i;
377
378 for (i = 0; i < sizeof(exceptions)/sizeof(exceptions[0]); i++)
379 {
380 got_exception = 0;
381 run_exception_test(handler, &exceptions[i], &exceptions[i].code,
382 sizeof(exceptions[i].code));
383 if (!i && !got_exception)
384 {
385 trace( "No exception, assuming win9x, no point in testing further\n" );
386 break;
387 }
388 ok( got_exception == (exceptions[i].status != 0),
389 "%u: bad exception count %d\n", i, got_exception );
390 }
391 }
392
393 /* test handling of debug registers */
394 static DWORD dreg_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
395 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
396 {
397 context->Eip += 2; /* Skips the popl (%eax) */
398 context->Dr0 = 0x42424242;
399 context->Dr1 = 0;
400 context->Dr2 = 0;
401 context->Dr3 = 0;
402 context->Dr6 = 0;
403 context->Dr7 = 0x155;
404 return ExceptionContinueExecution;
405 }
406
407 static const BYTE segfault_code[5] = {
408 0x31, 0xc0, /* xor %eax,%eax */
409 0x8f, 0x00, /* popl (%eax) - cause exception */
410 0xc3 /* ret */
411 };
412
413 /* test the single step exception behaviour */
414 static DWORD single_step_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
415 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
416 {
417 got_exception++;
418 ok (!(context->EFlags & 0x100), "eflags has single stepping bit set\n");
419
420 if( got_exception < 3)
421 context->EFlags |= 0x100; /* single step until popf instruction */
422 else {
423 /* show that the last single step exception on the popf instruction
424 * (which removed the TF bit), still is a EXCEPTION_SINGLE_STEP exception */
425 ok( rec->ExceptionCode == EXCEPTION_SINGLE_STEP,
426 "exception is not EXCEPTION_SINGLE_STEP: %x\n", rec->ExceptionCode);
427 }
428
429 return ExceptionContinueExecution;
430 }
431
432 static const BYTE single_stepcode[] = {
433 0x9c, /* pushf */
434 0x58, /* pop %eax */
435 0x0d,0,1,0,0, /* or $0x100,%eax */
436 0x50, /* push %eax */
437 0x9d, /* popf */
438 0x35,0,1,0,0, /* xor $0x100,%eax */
439 0x50, /* push %eax */
440 0x9d, /* popf */
441 0xc3
442 };
443
444 /* Test the alignment check (AC) flag handling. */
445 static const BYTE align_check_code[] = {
446 0x55, /* push %ebp */
447 0x89,0xe5, /* mov %esp,%ebp */
448 0x9c, /* pushf */
449 0x58, /* pop %eax */
450 0x0d,0,0,4,0, /* or $0x40000,%eax */
451 0x50, /* push %eax */
452 0x9d, /* popf */
453 0x89,0xe0, /* mov %esp, %eax */
454 0x8b,0x40,0x1, /* mov 0x1(%eax), %eax - cause exception */
455 0x9c, /* pushf */
456 0x58, /* pop %eax */
457 0x35,0,0,4,0, /* xor $0x40000,%eax */
458 0x50, /* push %eax */
459 0x9d, /* popf */
460 0x5d, /* pop %ebp */
461 0xc3, /* ret */
462 };
463
464 static DWORD align_check_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
465 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
466 {
467 ok (!(context->EFlags & 0x40000), "eflags has AC bit set\n");
468 got_exception++;
469 return ExceptionContinueExecution;
470 }
471
472 /* Test the direction flag handling. */
473 static const BYTE direction_flag_code[] = {
474 0x55, /* push %ebp */
475 0x89,0xe5, /* mov %esp,%ebp */
476 0xfd, /* std */
477 0xfa, /* cli - cause exception */
478 0x5d, /* pop %ebp */
479 0xc3, /* ret */
480 };
481
482 static DWORD direction_flag_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
483 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
484 {
485 #ifdef __GNUC__
486 unsigned int flags;
487 __asm__("pushfl; popl %0" : "=r" (flags) );
488 ok( !(flags & 0x400), "eflags has DF bit set\n" );
489 #endif
490 ok( context->EFlags & 0x400, "context eflags has DF bit cleared\n" );
491 got_exception++;
492 context->Eip++; /* skip cli */
493 return ExceptionContinueExecution;
494 }
495
496 /* test single stepping over hardware breakpoint */
497 static DWORD bpx_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
498 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
499 {
500 got_exception++;
501 ok( rec->ExceptionCode == EXCEPTION_SINGLE_STEP,
502 "wrong exception code: %x\n", rec->ExceptionCode);
503
504 if(got_exception == 1) {
505 /* hw bp exception on first nop */
506 ok( context->Eip == (DWORD)code_mem, "eip is wrong: %x instead of %x\n",
507 context->Eip, (DWORD)code_mem);
508 ok( (context->Dr6 & 0xf) == 1, "B0 flag is not set in Dr6\n");
509 ok( !(context->Dr6 & 0x4000), "BS flag is set in Dr6\n");
510 context->Dr0 = context->Dr0 + 1; /* set hw bp again on next instruction */
511 context->EFlags |= 0x100; /* enable single stepping */
512 } else if( got_exception == 2) {
513 /* single step exception on second nop */
514 ok( context->Eip == (DWORD)code_mem + 1, "eip is wrong: %x instead of %x\n",
515 context->Eip, (DWORD)code_mem + 1);
516 ok( (context->Dr6 & 0x4000), "BS flag is not set in Dr6\n");
517 /* depending on the win version the B0 bit is already set here as well
518 ok( (context->Dr6 & 0xf) == 0, "B0...3 flags in Dr6 shouldn't be set\n"); */
519 context->EFlags |= 0x100;
520 } else if( got_exception == 3) {
521 /* hw bp exception on second nop */
522 ok( context->Eip == (DWORD)code_mem + 1, "eip is wrong: %x instead of %x\n",
523 context->Eip, (DWORD)code_mem + 1);
524 ok( (context->Dr6 & 0xf) == 1, "B0 flag is not set in Dr6\n");
525 ok( !(context->Dr6 & 0x4000), "BS flag is set in Dr6\n");
526 context->Dr0 = 0; /* clear breakpoint */
527 context->EFlags |= 0x100;
528 } else {
529 /* single step exception on ret */
530 ok( context->Eip == (DWORD)code_mem + 2, "eip is wrong: %x instead of %x\n",
531 context->Eip, (DWORD)code_mem + 2);
532 ok( (context->Dr6 & 0xf) == 0, "B0...3 flags in Dr6 shouldn't be set\n");
533 ok( (context->Dr6 & 0x4000), "BS flag is not set in Dr6\n");
534 }
535
536 context->Dr6 = 0; /* clear status register */
537 return ExceptionContinueExecution;
538 }
539
540 static const BYTE dummy_code[] = { 0x90, 0x90, 0xc3 }; /* nop, nop, ret */
541
542 /* test int3 handling */
543 static DWORD int3_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
544 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
545 {
546 ok( rec->ExceptionAddress == code_mem, "exception address not at: %p, but at %p\n",
547 code_mem, rec->ExceptionAddress);
548 ok( context->Eip == (DWORD)code_mem, "eip not at: %p, but at %#x\n", code_mem, context->Eip);
549 if(context->Eip == (DWORD)code_mem) context->Eip++; /* skip breakpoint */
550
551 return ExceptionContinueExecution;
552 }
553
554 static const BYTE int3_code[] = { 0xCC, 0xc3 }; /* int 3, ret */
555
556
557 static void test_exceptions(void)
558 {
559 CONTEXT ctx;
560 NTSTATUS res;
561
562 if (!pNtGetContextThread || !pNtSetContextThread)
563 {
564 skip( "NtGetContextThread/NtSetContextThread not found\n" );
565 return;
566 }
567
568 /* test handling of debug registers */
569 run_exception_test(dreg_handler, NULL, &segfault_code, sizeof(segfault_code));
570
571 ctx.ContextFlags = CONTEXT_DEBUG_REGISTERS;
572 res = pNtGetContextThread(GetCurrentThread(), &ctx);
573 ok (res == STATUS_SUCCESS,"NtGetContextThread failed with %x\n", res);
574 ok(ctx.Dr0 == 0x42424242,"failed to set debugregister 0 to 0x42424242, got %x\n", ctx.Dr0);
575 ok((ctx.Dr7 & ~0xdc00) == 0x155,"failed to set debugregister 7 to 0x155, got %x\n", ctx.Dr7);
576
577 /* test single stepping behavior */
578 got_exception = 0;
579 run_exception_test(single_step_handler, NULL, &single_stepcode, sizeof(single_stepcode));
580 ok(got_exception == 3, "expected 3 single step exceptions, got %d\n", got_exception);
581
582 /* test alignment exceptions */
583 got_exception = 0;
584 run_exception_test(align_check_handler, NULL, align_check_code, sizeof(align_check_code));
585 ok(got_exception == 0, "got %d alignment faults, expected 0\n", got_exception);
586
587 /* test direction flag */
588 got_exception = 0;
589 run_exception_test(direction_flag_handler, NULL, direction_flag_code, sizeof(direction_flag_code));
590 ok(got_exception == 1, "got %d exceptions, expected 1\n", got_exception);
591
592 /* test single stepping over hardware breakpoint */
593 memset(&ctx, 0, sizeof(ctx));
594 ctx.Dr0 = (DWORD) code_mem; /* set hw bp on first nop */
595 ctx.Dr7 = 3;
596 ctx.ContextFlags = CONTEXT_DEBUG_REGISTERS;
597 res = pNtSetContextThread( GetCurrentThread(), &ctx);
598 ok( res == STATUS_SUCCESS, "NtSetContextThread faild with %x\n", res);
599
600 got_exception = 0;
601 run_exception_test(bpx_handler, NULL, dummy_code, sizeof(dummy_code));
602 ok( got_exception == 4,"expected 4 exceptions, got %d\n", got_exception);
603
604 /* test int3 handling */
605 run_exception_test(int3_handler, NULL, int3_code, sizeof(int3_code));
606 }
607
608 static void test_debugger(void)
609 {
610 char cmdline[MAX_PATH];
611 PROCESS_INFORMATION pi;
612 STARTUPINFO si = { 0 };
613 DEBUG_EVENT de;
614 DWORD continuestatus;
615 PVOID code_mem_address = NULL;
616 NTSTATUS status;
617 SIZE_T size_read;
618 BOOL ret;
619 int counter = 0;
620 si.cb = sizeof(si);
621
622 if(!pNtGetContextThread || !pNtSetContextThread || !pNtReadVirtualMemory || !pNtTerminateProcess)
623 {
624 skip("NtGetContextThread, NtSetContextThread, NtReadVirtualMemory or NtTerminateProcess not found\n)");
625 return;
626 }
627
628 sprintf(cmdline, "%s %s %s %p", my_argv[0], my_argv[1], "debuggee", &test_stage);
629 ret = CreateProcess(NULL, cmdline, NULL, NULL, FALSE, DEBUG_PROCESS, NULL, NULL, &si, &pi);
630 ok(ret, "could not create child process error: %u\n", GetLastError());
631 if (!ret)
632 return;
633
634 do
635 {
636 continuestatus = DBG_CONTINUE;
637 ok(WaitForDebugEvent(&de, INFINITE), "reading debug event\n");
638
639 if (de.dwThreadId != pi.dwThreadId)
640 {
641 trace("event %d not coming from main thread, ignoring\n", de.dwDebugEventCode);
642 ContinueDebugEvent(de.dwProcessId, de.dwThreadId, DBG_CONTINUE);
643 continue;
644 }
645
646 if (de.dwDebugEventCode == CREATE_PROCESS_DEBUG_EVENT)
647 {
648 if(de.u.CreateProcessInfo.lpBaseOfImage != pNtCurrentTeb()->Peb->ImageBaseAddress)
649 {
650 skip("child process loaded at different address, terminating it\n");
651 pNtTerminateProcess(pi.hProcess, 0);
652 }
653 }
654 else if (de.dwDebugEventCode == EXCEPTION_DEBUG_EVENT)
655 {
656 CONTEXT ctx;
657 int stage;
658
659 counter++;
660 status = pNtReadVirtualMemory(pi.hProcess, &code_mem, &code_mem_address,
661 sizeof(code_mem_address), &size_read);
662 ok(!status,"NtReadVirtualMemory failed with 0x%x\n", status);
663 status = pNtReadVirtualMemory(pi.hProcess, &test_stage, &stage,
664 sizeof(stage), &size_read);
665 ok(!status,"NtReadVirtualMemory failed with 0x%x\n", status);
666
667 ctx.ContextFlags = CONTEXT_FULL;
668 status = pNtGetContextThread(pi.hThread, &ctx);
669 ok(!status, "NtGetContextThread failed with 0x%x\n", status);
670
671 trace("exception 0x%x at %p firstchance=%d Eip=0x%x, Eax=0x%x\n",
672 de.u.Exception.ExceptionRecord.ExceptionCode,
673 de.u.Exception.ExceptionRecord.ExceptionAddress, de.u.Exception.dwFirstChance, ctx.Eip, ctx.Eax);
674
675 if (counter > 100)
676 {
677 ok(FALSE, "got way too many exceptions, probaby caught in a infinite loop, terminating child\n");
678 pNtTerminateProcess(pi.hProcess, 1);
679 }
680 else if (counter >= 2) /* skip startup breakpoint */
681 {
682 if (stage == 1)
683 {
684 ok((char *)ctx.Eip == (char *)code_mem_address + 0xb, "Eip at %x instead of %p\n",
685 ctx.Eip, (char *)code_mem_address + 0xb);
686 /* setting the context from debugger does not affect the context, the exception handlers gets */
687 /* uncomment once wine is fixed */
688 /* ctx.Eip = 0x12345; */
689 ctx.Eax = 0xf00f00f1;
690
691 /* let the debuggee handle the exception */
692 continuestatus = DBG_EXCEPTION_NOT_HANDLED;
693 }
694 else if (stage == 2)
695 {
696 if (de.u.Exception.dwFirstChance)
697 {
698 /* debugger gets first chance exception with unmodified ctx.Eip */
699 ok((char *)ctx.Eip == (char *)code_mem_address + 0xb, "Eip at 0x%x instead of %p\n",
700 ctx.Eip, (char *)code_mem_address + 0xb);
701
702 /* setting the context from debugger does not affect the context, the exception handlers gets */
703 /* uncomment once wine is fixed */
704 /* ctx.Eip = 0x12345; */
705 ctx.Eax = 0xf00f00f1;
706
707 /* pass exception to debuggee
708 * exception will not be handled and
709 * a second chance exception will be raised */
710 continuestatus = DBG_EXCEPTION_NOT_HANDLED;
711 }
712 else
713 {
714 /* debugger gets context after exception handler has played with it */
715 /* ctx.Eip is the same value the exception handler got */
716 if (de.u.Exception.ExceptionRecord.ExceptionCode == EXCEPTION_BREAKPOINT)
717 {
718 ok((char *)ctx.Eip == (char *)code_mem_address + 0xa, "Eip at 0x%x instead of %p\n",
719 ctx.Eip, (char *)code_mem_address + 0xa);
720 /* need to fixup Eip for debuggee */
721 if ((char *)ctx.Eip == (char *)code_mem_address + 0xa)
722 ctx.Eip += 1;
723 }
724 else
725 ok((char *)ctx.Eip == (char *)code_mem_address + 0xb, "Eip at 0x%x instead of %p\n",
726 ctx.Eip, (char *)code_mem_address + 0xb);
727 /* here we handle exception */
728 }
729 }
730 else
731 ok(FALSE, "unexpected stage %x\n", stage);
732
733 status = pNtSetContextThread(pi.hThread, &ctx);
734 ok(!status, "NtSetContextThread failed with 0x%x\n", status);
735 }
736 }
737
738 ContinueDebugEvent(de.dwProcessId, de.dwThreadId, continuestatus);
739
740 } while (de.dwDebugEventCode != EXIT_PROCESS_DEBUG_EVENT);
741
742 winetest_wait_child_process( pi.hProcess );
743 ok(CloseHandle(pi.hThread) != 0, "error %u\n", GetLastError());
744 ok(CloseHandle(pi.hProcess) != 0, "error %u\n", GetLastError());
745
746 return;
747 }
748
749 static DWORD simd_fault_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
750 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
751 {
752 int *stage = *(int **)(frame + 1);
753
754 got_exception++;
755
756 if( *stage == 1) {
757 /* fault while executing sse instruction */
758 context->Eip += 3; /* skip addps */
759 return ExceptionContinueExecution;
760 }
761
762 /* stage 2 - divide by zero fault */
763 if( rec->ExceptionCode == EXCEPTION_ILLEGAL_INSTRUCTION)
764 skip("system doesn't support SIMD exceptions\n");
765 else {
766 ok( rec->ExceptionCode == STATUS_FLOAT_MULTIPLE_TRAPS,
767 "exception code: %#x, should be %#x\n",
768 rec->ExceptionCode, STATUS_FLOAT_MULTIPLE_TRAPS);
769 ok( rec->NumberParameters == 1, "# of params: %i, should be 1\n",
770 rec->NumberParameters);
771 if( rec->NumberParameters == 1 )
772 ok( rec->ExceptionInformation[0] == 0, "param #1: %lx, should be 0\n", rec->ExceptionInformation[0]);
773 }
774
775 context->Eip += 3; /* skip divps */
776
777 return ExceptionContinueExecution;
778 }
779
780 static const BYTE simd_exception_test[] = {
781 0x83, 0xec, 0x4, /* sub $0x4, %esp */
782 0x0f, 0xae, 0x1c, 0x24, /* stmxcsr (%esp) */
783 0x66, 0x81, 0x24, 0x24, 0xff, 0xfd, /* andw $0xfdff,(%esp) * enable divide by */
784 0x0f, 0xae, 0x14, 0x24, /* ldmxcsr (%esp) * zero exceptions */
785 0x6a, 0x01, /* push $0x1 */
786 0x6a, 0x01, /* push $0x1 */
787 0x6a, 0x01, /* push $0x1 */
788 0x6a, 0x01, /* push $0x1 */
789 0x0f, 0x10, 0x0c, 0x24, /* movups (%esp),%xmm1 * fill dividend */
790 0x0f, 0x57, 0xc0, /* xorps %xmm0,%xmm0 * clear divisor */
791 0x0f, 0x5e, 0xc8, /* divps %xmm0,%xmm1 * generate fault */
792 0x83, 0xc4, 0x10, /* add $0x10,%esp */
793 0x66, 0x81, 0x0c, 0x24, 0x00, 0x02, /* orw $0x200,(%esp) * disable exceptions */
794 0x0f, 0xae, 0x14, 0x24, /* ldmxcsr (%esp) */
795 0x83, 0xc4, 0x04, /* add $0x4,%esp */
796 0xc3, /* ret */
797 };
798
799 static const BYTE sse_check[] = {
800 0x0f, 0x58, 0xc8, /* addps %xmm0,%xmm1 */
801 0xc3, /* ret */
802 };
803
804 static void test_simd_exceptions(void)
805 {
806 int stage;
807
808 /* test if CPU & OS can do sse */
809 stage = 1;
810 got_exception = 0;
811 run_exception_test(simd_fault_handler, &stage, sse_check, sizeof(sse_check));
812 if(got_exception) {
813 skip("system doesn't support SSE\n");
814 return;
815 }
816
817 /* generate a SIMD exception */
818 stage = 2;
819 got_exception = 0;
820 run_exception_test(simd_fault_handler, &stage, simd_exception_test,
821 sizeof(simd_exception_test));
822 ok( got_exception == 1, "got exception: %i, should be 1\n", got_exception);
823 }
824
825 #endif /* __i386__ */
826
827 START_TEST(exception)
828 {
829 #ifdef __i386__
830 HMODULE hntdll = GetModuleHandleA("ntdll.dll");
831
832 pNtCurrentTeb = (void *)GetProcAddress( hntdll, "NtCurrentTeb" );
833 pNtGetContextThread = (void *)GetProcAddress( hntdll, "NtGetContextThread" );
834 pNtSetContextThread = (void *)GetProcAddress( hntdll, "NtSetContextThread" );
835 pNtReadVirtualMemory = (void *)GetProcAddress( hntdll, "NtReadVirtualMemory" );
836 pRtlRaiseException = (void *)GetProcAddress( hntdll, "RtlRaiseException" );
837 pNtTerminateProcess = (void *)GetProcAddress( hntdll, "NtTerminateProcess" );
838 pRtlAddVectoredExceptionHandler = (void *)GetProcAddress( hntdll,
839 "RtlAddVectoredExceptionHandler" );
840 pRtlRemoveVectoredExceptionHandler = (void *)GetProcAddress( hntdll,
841 "RtlRemoveVectoredExceptionHandler" );
842 if (!pNtCurrentTeb)
843 {
844 skip( "NtCurrentTeb not found\n" );
845 return;
846 }
847
848 if (pRtlAddVectoredExceptionHandler && pRtlRemoveVectoredExceptionHandler)
849 have_vectored_api = TRUE;
850 else
851 skip("RtlAddVectoredExceptionHandler or RtlRemoveVectoredExceptionHandler not found\n");
852
853 /* 1024 byte should be sufficient */
854 code_mem = VirtualAlloc(NULL, 1024, MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE);
855 if(!code_mem) {
856 trace("VirtualAlloc failed\n");
857 return;
858 }
859
860 my_argc = winetest_get_mainargs( &my_argv );
861 if (my_argc >= 4)
862 {
863 void *addr;
864 sscanf( my_argv[3], "%p", &addr );
865
866 if (addr != &test_stage)
867 {
868 skip( "child process not mapped at same address (%p/%p)\n", &test_stage, addr);
869 return;
870 }
871
872 /* child must be run under a debugger */
873 if (!pNtCurrentTeb()->Peb->BeingDebugged)
874 {
875 ok(FALSE, "child process not being debugged?\n");
876 return;
877 }
878
879 if (pRtlRaiseException)
880 {
881 test_stage = 1;
882 run_rtlraiseexception_test(0x12345);
883 run_rtlraiseexception_test(EXCEPTION_BREAKPOINT);
884 run_rtlraiseexception_test(EXCEPTION_INVALID_HANDLE);
885 test_stage = 2;
886 run_rtlraiseexception_test(0x12345);
887 run_rtlraiseexception_test(EXCEPTION_BREAKPOINT);
888 run_rtlraiseexception_test(EXCEPTION_INVALID_HANDLE);
889 }
890 else
891 skip( "RtlRaiseException not found\n" );
892
893 /* rest of tests only run in parent */
894 return;
895 }
896
897 test_prot_fault();
898 test_exceptions();
899 test_rtlraiseexception();
900 test_debugger();
901 test_simd_exceptions();
902
903 VirtualFree(code_mem, 1024, MEM_RELEASE);
904 #endif
905 }
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