kernel32/tests: Fix some test failures on Win9x and WinME.
[wine/hacks.git] / dlls / ntdll / tests / exception.c
blob0632f2dec14dc707b5783169efa03832c7d4a1e3
1 /*
2 * Unit test suite for ntdll exceptions
4 * Copyright 2005 Alexandre Julliard
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.
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.
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
21 #include <stdarg.h>
22 #include <stdio.h>
24 #ifndef _WIN32_WINNT
25 #define _WIN32_WINNT 0x500 /* For NTSTATUS */
26 #endif
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"
38 #ifdef __i386__
39 static int my_argc;
40 static char** my_argv;
41 static int test_stage;
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;
53 /* Test various instruction combinations that cause a protection fault on the i386,
54 * and check what the resulting exception looks like.
57 static const struct exception
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[] =
67 /* test some privileged instructions */
68 { { 0xfb, 0xc3 }, /* 0: sti; ret */
69 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
70 { { 0x6c, 0xc3 }, /* 1: insb (%dx); ret */
71 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
72 { { 0x6d, 0xc3 }, /* 2: insl (%dx); ret */
73 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
74 { { 0x6e, 0xc3 }, /* 3: outsb (%dx); ret */
75 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
76 { { 0x6f, 0xc3 }, /* 4: outsl (%dx); ret */
77 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
78 { { 0xe4, 0x11, 0xc3 }, /* 5: inb $0x11,%al; ret */
79 0, 2, STATUS_PRIVILEGED_INSTRUCTION, 0 },
80 { { 0xe5, 0x11, 0xc3 }, /* 6: inl $0x11,%eax; ret */
81 0, 2, STATUS_PRIVILEGED_INSTRUCTION, 0 },
82 { { 0xe6, 0x11, 0xc3 }, /* 7: outb %al,$0x11; ret */
83 0, 2, STATUS_PRIVILEGED_INSTRUCTION, 0 },
84 { { 0xe7, 0x11, 0xc3 }, /* 8: outl %eax,$0x11; ret */
85 0, 2, STATUS_PRIVILEGED_INSTRUCTION, 0 },
86 { { 0xed, 0xc3 }, /* 9: inl (%dx),%eax; ret */
87 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
88 { { 0xee, 0xc3 }, /* 10: outb %al,(%dx); ret */
89 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
90 { { 0xef, 0xc3 }, /* 11: outl %eax,(%dx); ret */
91 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
92 { { 0xf4, 0xc3 }, /* 12: hlt; ret */
93 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
94 { { 0xfa, 0xc3 }, /* 13: cli; ret */
95 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
97 /* test long jump to invalid selector */
98 { { 0xea, 0, 0, 0, 0, 0, 0, 0xc3 }, /* 14: ljmp $0,$0; ret */
99 0, 7, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
101 /* test iret to invalid selector */
102 { { 0x6a, 0x00, 0x6a, 0x00, 0x6a, 0x00, 0xcf, 0x83, 0xc4, 0x0c, 0xc3 },
103 /* 15: pushl $0; pushl $0; pushl $0; iret; addl $12,%esp; ret */
104 6, 1, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
106 /* test loading an invalid selector */
107 { { 0xb8, 0xef, 0xbe, 0x00, 0x00, 0x8e, 0xe8, 0xc3 }, /* 16: mov $beef,%ax; mov %ax,%gs; ret */
108 5, 2, STATUS_ACCESS_VIOLATION, 2, { 0, 0xbee8 } }, /* 0xbee8 or 0xffffffff */
110 /* test accessing a zero selector */
111 { { 0x06, 0x31, 0xc0, 0x8e, 0xc0, 0x26, 0xa1, 0, 0, 0, 0, 0x07, 0xc3 },
112 /* 17: push %es; xor %eax,%eax; mov %ax,%es; mov %es:(0),%ax; pop %es; ret */
113 5, 6, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
115 /* test moving %cs -> %ss */
116 { { 0x0e, 0x17, 0x58, 0xc3 }, /* 18: pushl %cs; popl %ss; popl %eax; ret */
117 1, 1, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
119 /* 19: 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 },
125 /* test invalid interrupt */
126 { { 0xcd, 0xff, 0xc3 }, /* 21: int $0xff; ret */
127 0, 2, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
129 /* test moves to/from Crx */
130 { { 0x0f, 0x20, 0xc0, 0xc3 }, /* 22: movl %cr0,%eax; ret */
131 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
132 { { 0x0f, 0x20, 0xe0, 0xc3 }, /* 23: movl %cr4,%eax; ret */
133 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
134 { { 0x0f, 0x22, 0xc0, 0xc3 }, /* 24: movl %eax,%cr0; ret */
135 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
136 { { 0x0f, 0x22, 0xe0, 0xc3 }, /* 25: movl %eax,%cr4; ret */
137 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
139 /* test moves to/from Drx */
140 { { 0x0f, 0x21, 0xc0, 0xc3 }, /* 26: movl %dr0,%eax; ret */
141 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
142 { { 0x0f, 0x21, 0xc8, 0xc3 }, /* 27: movl %dr1,%eax; ret */
143 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
144 { { 0x0f, 0x21, 0xf8, 0xc3 }, /* 28: movl %dr7,%eax; ret */
145 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
146 { { 0x0f, 0x23, 0xc0, 0xc3 }, /* 29: movl %eax,%dr0; ret */
147 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
148 { { 0x0f, 0x23, 0xc8, 0xc3 }, /* 30: movl %eax,%dr1; ret */
149 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
150 { { 0x0f, 0x23, 0xf8, 0xc3 }, /* 31: movl %eax,%dr7; ret */
151 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
153 /* test memory reads */
154 { { 0xa1, 0xfc, 0xff, 0xff, 0xff, 0xc3 }, /* 32: movl 0xfffffffc,%eax; ret */
155 0, 5, STATUS_ACCESS_VIOLATION, 2, { 0, 0xfffffffc } },
156 { { 0xa1, 0xfd, 0xff, 0xff, 0xff, 0xc3 }, /* 33: movl 0xfffffffd,%eax; ret */
157 0, 5, STATUS_ACCESS_VIOLATION, 2, { 0, 0xfffffffd } },
158 { { 0xa1, 0xfe, 0xff, 0xff, 0xff, 0xc3 }, /* 34: movl 0xfffffffe,%eax; ret */
159 0, 5, STATUS_ACCESS_VIOLATION, 2, { 0, 0xfffffffe } },
160 { { 0xa1, 0xff, 0xff, 0xff, 0xff, 0xc3 }, /* 35: movl 0xffffffff,%eax; ret */
161 0, 5, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
163 /* test memory writes */
164 { { 0xa3, 0xfc, 0xff, 0xff, 0xff, 0xc3 }, /* 36: movl %eax,0xfffffffc; ret */
165 0, 5, STATUS_ACCESS_VIOLATION, 2, { 1, 0xfffffffc } },
166 { { 0xa3, 0xfd, 0xff, 0xff, 0xff, 0xc3 }, /* 37: movl %eax,0xfffffffd; ret */
167 0, 5, STATUS_ACCESS_VIOLATION, 2, { 1, 0xfffffffd } },
168 { { 0xa3, 0xfe, 0xff, 0xff, 0xff, 0xc3 }, /* 38: movl %eax,0xfffffffe; ret */
169 0, 5, STATUS_ACCESS_VIOLATION, 2, { 1, 0xfffffffe } },
170 { { 0xa3, 0xff, 0xff, 0xff, 0xff, 0xc3 }, /* 39: movl %eax,0xffffffff; ret */
171 0, 5, STATUS_ACCESS_VIOLATION, 2, { 1, 0xffffffff } },
173 /* 40: test exception with cleared %ds and %es */
174 { { 0x1e, 0x06, 0x31, 0xc0, 0x8e, 0xd8, 0x8e, 0xc0, 0xfa, 0x07, 0x1f, 0xc3 },
175 /* push %ds; push %es; xorl %eax,%eax; mov %ax,%ds; mov %ax,%es; cli; pop %es; pop %ds; ret */
176 8, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
179 static int got_exception;
180 static BOOL have_vectored_api;
182 static void run_exception_test(void *handler, const void* context,
183 const void *code, unsigned int code_size)
185 struct {
186 EXCEPTION_REGISTRATION_RECORD frame;
187 const void *context;
188 } exc_frame;
189 void (*func)(void) = code_mem;
191 exc_frame.frame.Handler = handler;
192 exc_frame.frame.Prev = pNtCurrentTeb()->Tib.ExceptionList;
193 exc_frame.context = context;
195 memcpy(code_mem, code, code_size);
197 pNtCurrentTeb()->Tib.ExceptionList = &exc_frame.frame;
198 func();
199 pNtCurrentTeb()->Tib.ExceptionList = exc_frame.frame.Prev;
202 static LONG CALLBACK rtlraiseexception_vectored_handler(EXCEPTION_POINTERS *ExceptionInfo)
204 PCONTEXT context = ExceptionInfo->ContextRecord;
205 PEXCEPTION_RECORD rec = ExceptionInfo->ExceptionRecord;
206 trace("vect. handler %08x addr:%p context.Eip:%x\n", rec->ExceptionCode,
207 rec->ExceptionAddress, context->Eip);
209 todo_wine {
210 ok(rec->ExceptionAddress == (char *)code_mem + 0xb, "ExceptionAddress at %p instead of %p\n",
211 rec->ExceptionAddress, (char *)code_mem + 0xb);
213 if (pNtCurrentTeb()->Peb->BeingDebugged)
214 ok((void *)context->Eax == pRtlRaiseException, "debugger managed to modify Eax to %x should be %p\n",
215 context->Eax, pRtlRaiseException);
218 /* check that context.Eip is fixed up only for EXCEPTION_BREAKPOINT
219 * even if raised by RtlRaiseException
221 if(rec->ExceptionCode == EXCEPTION_BREAKPOINT)
223 ok(context->Eip == (DWORD)code_mem + 0xa ||
224 broken(context->Eip == (DWORD)code_mem + 0xb), /* win2k3 */
225 "Eip at %x instead of %x or %x\n", context->Eip,
226 (DWORD)code_mem + 0xa, (DWORD)code_mem + 0xb);
228 else
230 ok(context->Eip == (DWORD)code_mem + 0xb, "Eip at %x instead of %x\n",
231 context->Eip, (DWORD)code_mem + 0xb);
234 /* test if context change is preserved from vectored handler to stack handlers */
235 context->Eax = 0xf00f00f0;
236 return EXCEPTION_CONTINUE_SEARCH;
239 static DWORD rtlraiseexception_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
240 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
242 trace( "exception: %08x flags:%x addr:%p context: Eip:%x\n",
243 rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress, context->Eip );
245 todo_wine {
246 ok(rec->ExceptionAddress == (char *)code_mem + 0xb, "ExceptionAddress at %p instead of %p\n",
247 rec->ExceptionAddress, (char *)code_mem + 0xb);
250 /* check that context.Eip is fixed up only for EXCEPTION_BREAKPOINT
251 * even if raised by RtlRaiseException
253 if(rec->ExceptionCode == EXCEPTION_BREAKPOINT)
255 ok(context->Eip == (DWORD)code_mem + 0xa ||
256 broken(context->Eip == (DWORD)code_mem + 0xb), /* win2k3 */
257 "Eip at %x instead of %x or %x\n", context->Eip,
258 (DWORD)code_mem + 0xa, (DWORD)code_mem + 0xb);
260 else
262 ok(context->Eip == (DWORD)code_mem + 0xb, "Eip at %x instead of %x\n",
263 context->Eip, (DWORD)code_mem + 0xb);
266 if(have_vectored_api)
267 ok(context->Eax == 0xf00f00f0, "Eax is %x, should have been set to 0xf00f00f0 in vectored handler\n",
268 context->Eax);
270 /* give the debugger a chance to examine the state a second time */
271 /* without the exception handler changing Eip */
272 if (test_stage == 2)
273 return ExceptionContinueSearch;
275 /* Eip in context is decreased by 1
276 * Increase it again, else execution will continue in the middle of a instruction */
277 if(rec->ExceptionCode == EXCEPTION_BREAKPOINT && (context->Eip == (DWORD)code_mem + 0xa))
278 context->Eip += 1;
279 return ExceptionContinueExecution;
283 static const BYTE call_one_arg_code[] = {
284 0x8b, 0x44, 0x24, 0x08, /* mov 0x8(%esp),%eax */
285 0x50, /* push %eax */
286 0x8b, 0x44, 0x24, 0x08, /* mov 0x8(%esp),%eax */
287 0xff, 0xd0, /* call *%eax */
288 0x90, /* nop */
289 0x90, /* nop */
290 0x90, /* nop */
291 0x90, /* nop */
292 0xc3, /* ret */
296 static void run_rtlraiseexception_test(DWORD exceptioncode)
298 EXCEPTION_REGISTRATION_RECORD frame;
299 EXCEPTION_RECORD record;
300 PVOID vectored_handler = NULL;
302 void (*func)(void* function, EXCEPTION_RECORD* record) = code_mem;
304 record.ExceptionCode = exceptioncode;
305 record.ExceptionFlags = 0;
306 record.ExceptionRecord = NULL;
307 record.ExceptionAddress = NULL; /* does not matter, copied return address */
308 record.NumberParameters = 0;
310 frame.Handler = rtlraiseexception_handler;
311 frame.Prev = pNtCurrentTeb()->Tib.ExceptionList;
313 memcpy(code_mem, call_one_arg_code, sizeof(call_one_arg_code));
315 pNtCurrentTeb()->Tib.ExceptionList = &frame;
316 if (have_vectored_api)
318 vectored_handler = pRtlAddVectoredExceptionHandler(TRUE, &rtlraiseexception_vectored_handler);
319 ok(vectored_handler != 0, "RtlAddVectoredExceptionHandler failed\n");
322 func(pRtlRaiseException, &record);
324 if (have_vectored_api)
325 pRtlRemoveVectoredExceptionHandler(vectored_handler);
326 pNtCurrentTeb()->Tib.ExceptionList = frame.Prev;
329 static void test_rtlraiseexception(void)
331 if (!pRtlRaiseException)
333 skip("RtlRaiseException not found\n");
334 return;
337 /* test without debugger */
338 run_rtlraiseexception_test(0x12345);
339 run_rtlraiseexception_test(EXCEPTION_BREAKPOINT);
340 run_rtlraiseexception_test(EXCEPTION_INVALID_HANDLE);
343 static DWORD handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
344 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
346 const struct exception *except = *(const struct exception **)(frame + 1);
347 unsigned int i, entry = except - exceptions;
349 got_exception++;
350 trace( "exception: %x flags:%x addr:%p\n",
351 rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress );
353 ok( rec->ExceptionCode == except->status,
354 "%u: Wrong exception code %x/%x\n", entry, rec->ExceptionCode, except->status );
355 ok( rec->ExceptionAddress == (char*)code_mem + except->offset,
356 "%u: Wrong exception address %p/%p\n", entry,
357 rec->ExceptionAddress, (char*)code_mem + except->offset );
359 ok( rec->NumberParameters == except->nb_params,
360 "%u: Wrong number of parameters %u/%u\n", entry, rec->NumberParameters, except->nb_params );
362 /* Most CPUs (except Intel Core apparently) report a segment limit violation */
363 /* instead of page faults for accesses beyond 0xffffffff */
364 if (except->nb_params == 2 && except->params[1] >= 0xfffffffd)
366 if (rec->ExceptionInformation[0] == 0 && rec->ExceptionInformation[1] == 0xffffffff)
367 goto skip_params;
370 /* Seems that both 0xbee8 and 0xfffffffff can be returned in windows */
371 if (except->nb_params == 2 && rec->NumberParameters == 2
372 && except->params[1] == 0xbee8 && rec->ExceptionInformation[1] == 0xffffffff
373 && except->params[0] == rec->ExceptionInformation[0])
375 goto skip_params;
378 for (i = 0; i < rec->NumberParameters; i++)
379 ok( rec->ExceptionInformation[i] == except->params[i],
380 "%u: Wrong parameter %d: %lx/%x\n",
381 entry, i, rec->ExceptionInformation[i], except->params[i] );
383 skip_params:
384 /* don't handle exception if it's not the address we expected */
385 if (rec->ExceptionAddress != (char*)code_mem + except->offset) return ExceptionContinueSearch;
387 context->Eip += except->length;
388 return ExceptionContinueExecution;
391 static void test_prot_fault(void)
393 unsigned int i;
395 for (i = 0; i < sizeof(exceptions)/sizeof(exceptions[0]); i++)
397 got_exception = 0;
398 run_exception_test(handler, &exceptions[i], &exceptions[i].code,
399 sizeof(exceptions[i].code));
400 if (!i && !got_exception)
402 trace( "No exception, assuming win9x, no point in testing further\n" );
403 break;
405 ok( got_exception == (exceptions[i].status != 0),
406 "%u: bad exception count %d\n", i, got_exception );
410 /* test handling of debug registers */
411 static DWORD dreg_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
412 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
414 context->Eip += 2; /* Skips the popl (%eax) */
415 context->Dr0 = 0x42424242;
416 context->Dr1 = 0;
417 context->Dr2 = 0;
418 context->Dr3 = 0;
419 context->Dr6 = 0;
420 context->Dr7 = 0x155;
421 return ExceptionContinueExecution;
424 static const BYTE segfault_code[5] = {
425 0x31, 0xc0, /* xor %eax,%eax */
426 0x8f, 0x00, /* popl (%eax) - cause exception */
427 0xc3 /* ret */
430 /* test the single step exception behaviour */
431 static DWORD single_step_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
432 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
434 got_exception++;
435 ok (!(context->EFlags & 0x100), "eflags has single stepping bit set\n");
437 if( got_exception < 3)
438 context->EFlags |= 0x100; /* single step until popf instruction */
439 else {
440 /* show that the last single step exception on the popf instruction
441 * (which removed the TF bit), still is a EXCEPTION_SINGLE_STEP exception */
442 ok( rec->ExceptionCode == EXCEPTION_SINGLE_STEP,
443 "exception is not EXCEPTION_SINGLE_STEP: %x\n", rec->ExceptionCode);
446 return ExceptionContinueExecution;
449 static const BYTE single_stepcode[] = {
450 0x9c, /* pushf */
451 0x58, /* pop %eax */
452 0x0d,0,1,0,0, /* or $0x100,%eax */
453 0x50, /* push %eax */
454 0x9d, /* popf */
455 0x35,0,1,0,0, /* xor $0x100,%eax */
456 0x50, /* push %eax */
457 0x9d, /* popf */
458 0xc3
461 /* Test the alignment check (AC) flag handling. */
462 static const BYTE align_check_code[] = {
463 0x55, /* push %ebp */
464 0x89,0xe5, /* mov %esp,%ebp */
465 0x9c, /* pushf */
466 0x58, /* pop %eax */
467 0x0d,0,0,4,0, /* or $0x40000,%eax */
468 0x50, /* push %eax */
469 0x9d, /* popf */
470 0x89,0xe0, /* mov %esp, %eax */
471 0x8b,0x40,0x1, /* mov 0x1(%eax), %eax - cause exception */
472 0x9c, /* pushf */
473 0x58, /* pop %eax */
474 0x35,0,0,4,0, /* xor $0x40000,%eax */
475 0x50, /* push %eax */
476 0x9d, /* popf */
477 0x5d, /* pop %ebp */
478 0xc3, /* ret */
481 static DWORD align_check_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
482 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
484 ok (!(context->EFlags & 0x40000), "eflags has AC bit set\n");
485 got_exception++;
486 return ExceptionContinueExecution;
489 /* Test the direction flag handling. */
490 static const BYTE direction_flag_code[] = {
491 0x55, /* push %ebp */
492 0x89,0xe5, /* mov %esp,%ebp */
493 0xfd, /* std */
494 0xfa, /* cli - cause exception */
495 0x5d, /* pop %ebp */
496 0xc3, /* ret */
499 static DWORD direction_flag_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
500 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
502 #ifdef __GNUC__
503 unsigned int flags;
504 __asm__("pushfl; popl %0; cld" : "=r" (flags) );
505 /* older windows versions don't clear DF properly so don't test */
506 if (flags & 0x400) trace( "eflags has DF bit set\n" );
507 #endif
508 ok( context->EFlags & 0x400, "context eflags has DF bit cleared\n" );
509 got_exception++;
510 context->Eip++; /* skip cli */
511 context->EFlags &= ~0x400; /* make sure it is cleared on return */
512 return ExceptionContinueExecution;
515 /* test single stepping over hardware breakpoint */
516 static DWORD bpx_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
517 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
519 got_exception++;
520 ok( rec->ExceptionCode == EXCEPTION_SINGLE_STEP,
521 "wrong exception code: %x\n", rec->ExceptionCode);
523 if(got_exception == 1) {
524 /* hw bp exception on first nop */
525 ok( context->Eip == (DWORD)code_mem, "eip is wrong: %x instead of %x\n",
526 context->Eip, (DWORD)code_mem);
527 ok( (context->Dr6 & 0xf) == 1, "B0 flag is not set in Dr6\n");
528 ok( !(context->Dr6 & 0x4000), "BS flag is set in Dr6\n");
529 context->Dr0 = context->Dr0 + 1; /* set hw bp again on next instruction */
530 context->EFlags |= 0x100; /* enable single stepping */
531 } else if( got_exception == 2) {
532 /* single step exception on second nop */
533 ok( context->Eip == (DWORD)code_mem + 1, "eip is wrong: %x instead of %x\n",
534 context->Eip, (DWORD)code_mem + 1);
535 ok( (context->Dr6 & 0x4000), "BS flag is not set in Dr6\n");
536 /* depending on the win version the B0 bit is already set here as well
537 ok( (context->Dr6 & 0xf) == 0, "B0...3 flags in Dr6 shouldn't be set\n"); */
538 context->EFlags |= 0x100;
539 } else if( got_exception == 3) {
540 /* hw bp exception on second nop */
541 ok( context->Eip == (DWORD)code_mem + 1, "eip is wrong: %x instead of %x\n",
542 context->Eip, (DWORD)code_mem + 1);
543 ok( (context->Dr6 & 0xf) == 1, "B0 flag is not set in Dr6\n");
544 ok( !(context->Dr6 & 0x4000), "BS flag is set in Dr6\n");
545 context->Dr0 = 0; /* clear breakpoint */
546 context->EFlags |= 0x100;
547 } else {
548 /* single step exception on ret */
549 ok( context->Eip == (DWORD)code_mem + 2, "eip is wrong: %x instead of %x\n",
550 context->Eip, (DWORD)code_mem + 2);
551 ok( (context->Dr6 & 0xf) == 0, "B0...3 flags in Dr6 shouldn't be set\n");
552 ok( (context->Dr6 & 0x4000), "BS flag is not set in Dr6\n");
555 context->Dr6 = 0; /* clear status register */
556 return ExceptionContinueExecution;
559 static const BYTE dummy_code[] = { 0x90, 0x90, 0xc3 }; /* nop, nop, ret */
561 /* test int3 handling */
562 static DWORD int3_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
563 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
565 ok( rec->ExceptionAddress == code_mem, "exception address not at: %p, but at %p\n",
566 code_mem, rec->ExceptionAddress);
567 ok( context->Eip == (DWORD)code_mem, "eip not at: %p, but at %#x\n", code_mem, context->Eip);
568 if(context->Eip == (DWORD)code_mem) context->Eip++; /* skip breakpoint */
570 return ExceptionContinueExecution;
573 static const BYTE int3_code[] = { 0xCC, 0xc3 }; /* int 3, ret */
576 static void test_exceptions(void)
578 CONTEXT ctx;
579 NTSTATUS res;
581 if (!pNtGetContextThread || !pNtSetContextThread)
583 skip( "NtGetContextThread/NtSetContextThread not found\n" );
584 return;
587 /* test handling of debug registers */
588 run_exception_test(dreg_handler, NULL, &segfault_code, sizeof(segfault_code));
590 ctx.ContextFlags = CONTEXT_DEBUG_REGISTERS;
591 res = pNtGetContextThread(GetCurrentThread(), &ctx);
592 ok (res == STATUS_SUCCESS,"NtGetContextThread failed with %x\n", res);
593 ok(ctx.Dr0 == 0x42424242,"failed to set debugregister 0 to 0x42424242, got %x\n", ctx.Dr0);
594 ok((ctx.Dr7 & ~0xdc00) == 0x155,"failed to set debugregister 7 to 0x155, got %x\n", ctx.Dr7);
596 /* test single stepping behavior */
597 got_exception = 0;
598 run_exception_test(single_step_handler, NULL, &single_stepcode, sizeof(single_stepcode));
599 ok(got_exception == 3, "expected 3 single step exceptions, got %d\n", got_exception);
601 /* test alignment exceptions */
602 got_exception = 0;
603 run_exception_test(align_check_handler, NULL, align_check_code, sizeof(align_check_code));
604 ok(got_exception == 0, "got %d alignment faults, expected 0\n", got_exception);
606 /* test direction flag */
607 got_exception = 0;
608 run_exception_test(direction_flag_handler, NULL, direction_flag_code, sizeof(direction_flag_code));
609 ok(got_exception == 1, "got %d exceptions, expected 1\n", got_exception);
611 /* test single stepping over hardware breakpoint */
612 memset(&ctx, 0, sizeof(ctx));
613 ctx.Dr0 = (DWORD) code_mem; /* set hw bp on first nop */
614 ctx.Dr7 = 3;
615 ctx.ContextFlags = CONTEXT_DEBUG_REGISTERS;
616 res = pNtSetContextThread( GetCurrentThread(), &ctx);
617 ok( res == STATUS_SUCCESS, "NtSetContextThread faild with %x\n", res);
619 got_exception = 0;
620 run_exception_test(bpx_handler, NULL, dummy_code, sizeof(dummy_code));
621 ok( got_exception == 4,"expected 4 exceptions, got %d\n", got_exception);
623 /* test int3 handling */
624 run_exception_test(int3_handler, NULL, int3_code, sizeof(int3_code));
627 static void test_debugger(void)
629 char cmdline[MAX_PATH];
630 PROCESS_INFORMATION pi;
631 STARTUPINFO si = { 0 };
632 DEBUG_EVENT de;
633 DWORD continuestatus;
634 PVOID code_mem_address = NULL;
635 NTSTATUS status;
636 SIZE_T size_read;
637 BOOL ret;
638 int counter = 0;
639 si.cb = sizeof(si);
641 if(!pNtGetContextThread || !pNtSetContextThread || !pNtReadVirtualMemory || !pNtTerminateProcess)
643 skip("NtGetContextThread, NtSetContextThread, NtReadVirtualMemory or NtTerminateProcess not found\n)");
644 return;
647 sprintf(cmdline, "%s %s %s %p", my_argv[0], my_argv[1], "debuggee", &test_stage);
648 ret = CreateProcess(NULL, cmdline, NULL, NULL, FALSE, DEBUG_PROCESS, NULL, NULL, &si, &pi);
649 ok(ret, "could not create child process error: %u\n", GetLastError());
650 if (!ret)
651 return;
655 continuestatus = DBG_CONTINUE;
656 ok(WaitForDebugEvent(&de, INFINITE), "reading debug event\n");
658 if (de.dwThreadId != pi.dwThreadId)
660 trace("event %d not coming from main thread, ignoring\n", de.dwDebugEventCode);
661 ContinueDebugEvent(de.dwProcessId, de.dwThreadId, DBG_CONTINUE);
662 continue;
665 if (de.dwDebugEventCode == CREATE_PROCESS_DEBUG_EVENT)
667 if(de.u.CreateProcessInfo.lpBaseOfImage != pNtCurrentTeb()->Peb->ImageBaseAddress)
669 skip("child process loaded at different address, terminating it\n");
670 pNtTerminateProcess(pi.hProcess, 0);
673 else if (de.dwDebugEventCode == EXCEPTION_DEBUG_EVENT)
675 CONTEXT ctx;
676 int stage;
678 counter++;
679 status = pNtReadVirtualMemory(pi.hProcess, &code_mem, &code_mem_address,
680 sizeof(code_mem_address), &size_read);
681 ok(!status,"NtReadVirtualMemory failed with 0x%x\n", status);
682 status = pNtReadVirtualMemory(pi.hProcess, &test_stage, &stage,
683 sizeof(stage), &size_read);
684 ok(!status,"NtReadVirtualMemory failed with 0x%x\n", status);
686 ctx.ContextFlags = CONTEXT_FULL;
687 status = pNtGetContextThread(pi.hThread, &ctx);
688 ok(!status, "NtGetContextThread failed with 0x%x\n", status);
690 trace("exception 0x%x at %p firstchance=%d Eip=0x%x, Eax=0x%x\n",
691 de.u.Exception.ExceptionRecord.ExceptionCode,
692 de.u.Exception.ExceptionRecord.ExceptionAddress, de.u.Exception.dwFirstChance, ctx.Eip, ctx.Eax);
694 if (counter > 100)
696 ok(FALSE, "got way too many exceptions, probaby caught in a infinite loop, terminating child\n");
697 pNtTerminateProcess(pi.hProcess, 1);
699 else if (counter >= 2) /* skip startup breakpoint */
701 if (stage == 1)
703 ok((char *)ctx.Eip == (char *)code_mem_address + 0xb, "Eip at %x instead of %p\n",
704 ctx.Eip, (char *)code_mem_address + 0xb);
705 /* setting the context from debugger does not affect the context, the exception handlers gets */
706 /* uncomment once wine is fixed */
707 /* ctx.Eip = 0x12345; */
708 ctx.Eax = 0xf00f00f1;
710 /* let the debuggee handle the exception */
711 continuestatus = DBG_EXCEPTION_NOT_HANDLED;
713 else if (stage == 2)
715 if (de.u.Exception.dwFirstChance)
717 /* debugger gets first chance exception with unmodified ctx.Eip */
718 ok((char *)ctx.Eip == (char *)code_mem_address + 0xb, "Eip at 0x%x instead of %p\n",
719 ctx.Eip, (char *)code_mem_address + 0xb);
721 /* setting the context from debugger does not affect the context, the exception handlers gets */
722 /* uncomment once wine is fixed */
723 /* ctx.Eip = 0x12345; */
724 ctx.Eax = 0xf00f00f1;
726 /* pass exception to debuggee
727 * exception will not be handled and
728 * a second chance exception will be raised */
729 continuestatus = DBG_EXCEPTION_NOT_HANDLED;
731 else
733 /* debugger gets context after exception handler has played with it */
734 /* ctx.Eip is the same value the exception handler got */
735 if (de.u.Exception.ExceptionRecord.ExceptionCode == EXCEPTION_BREAKPOINT)
737 ok((char *)ctx.Eip == (char *)code_mem_address + 0xa, "Eip at 0x%x instead of %p\n",
738 ctx.Eip, (char *)code_mem_address + 0xa);
739 /* need to fixup Eip for debuggee */
740 if ((char *)ctx.Eip == (char *)code_mem_address + 0xa)
741 ctx.Eip += 1;
743 else
744 ok((char *)ctx.Eip == (char *)code_mem_address + 0xb, "Eip at 0x%x instead of %p\n",
745 ctx.Eip, (char *)code_mem_address + 0xb);
746 /* here we handle exception */
749 else
750 ok(FALSE, "unexpected stage %x\n", stage);
752 status = pNtSetContextThread(pi.hThread, &ctx);
753 ok(!status, "NtSetContextThread failed with 0x%x\n", status);
757 ContinueDebugEvent(de.dwProcessId, de.dwThreadId, continuestatus);
759 } while (de.dwDebugEventCode != EXIT_PROCESS_DEBUG_EVENT);
761 winetest_wait_child_process( pi.hProcess );
762 ok(CloseHandle(pi.hThread) != 0, "error %u\n", GetLastError());
763 ok(CloseHandle(pi.hProcess) != 0, "error %u\n", GetLastError());
765 return;
768 static DWORD simd_fault_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
769 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
771 int *stage = *(int **)(frame + 1);
773 got_exception++;
775 if( *stage == 1) {
776 /* fault while executing sse instruction */
777 context->Eip += 3; /* skip addps */
778 return ExceptionContinueExecution;
781 /* stage 2 - divide by zero fault */
782 if( rec->ExceptionCode == EXCEPTION_ILLEGAL_INSTRUCTION)
783 skip("system doesn't support SIMD exceptions\n");
784 else {
785 ok( rec->ExceptionCode == STATUS_FLOAT_MULTIPLE_TRAPS,
786 "exception code: %#x, should be %#x\n",
787 rec->ExceptionCode, STATUS_FLOAT_MULTIPLE_TRAPS);
788 ok( rec->NumberParameters == 1, "# of params: %i, should be 1\n",
789 rec->NumberParameters);
790 if( rec->NumberParameters == 1 )
791 ok( rec->ExceptionInformation[0] == 0, "param #1: %lx, should be 0\n", rec->ExceptionInformation[0]);
794 context->Eip += 3; /* skip divps */
796 return ExceptionContinueExecution;
799 static const BYTE simd_exception_test[] = {
800 0x83, 0xec, 0x4, /* sub $0x4, %esp */
801 0x0f, 0xae, 0x1c, 0x24, /* stmxcsr (%esp) */
802 0x66, 0x81, 0x24, 0x24, 0xff, 0xfd, /* andw $0xfdff,(%esp) * enable divide by */
803 0x0f, 0xae, 0x14, 0x24, /* ldmxcsr (%esp) * zero exceptions */
804 0x6a, 0x01, /* push $0x1 */
805 0x6a, 0x01, /* push $0x1 */
806 0x6a, 0x01, /* push $0x1 */
807 0x6a, 0x01, /* push $0x1 */
808 0x0f, 0x10, 0x0c, 0x24, /* movups (%esp),%xmm1 * fill dividend */
809 0x0f, 0x57, 0xc0, /* xorps %xmm0,%xmm0 * clear divisor */
810 0x0f, 0x5e, 0xc8, /* divps %xmm0,%xmm1 * generate fault */
811 0x83, 0xc4, 0x10, /* add $0x10,%esp */
812 0x66, 0x81, 0x0c, 0x24, 0x00, 0x02, /* orw $0x200,(%esp) * disable exceptions */
813 0x0f, 0xae, 0x14, 0x24, /* ldmxcsr (%esp) */
814 0x83, 0xc4, 0x04, /* add $0x4,%esp */
815 0xc3, /* ret */
818 static const BYTE sse_check[] = {
819 0x0f, 0x58, 0xc8, /* addps %xmm0,%xmm1 */
820 0xc3, /* ret */
823 static void test_simd_exceptions(void)
825 int stage;
827 /* test if CPU & OS can do sse */
828 stage = 1;
829 got_exception = 0;
830 run_exception_test(simd_fault_handler, &stage, sse_check, sizeof(sse_check));
831 if(got_exception) {
832 skip("system doesn't support SSE\n");
833 return;
836 /* generate a SIMD exception */
837 stage = 2;
838 got_exception = 0;
839 run_exception_test(simd_fault_handler, &stage, simd_exception_test,
840 sizeof(simd_exception_test));
841 ok( got_exception == 1, "got exception: %i, should be 1\n", got_exception);
844 struct fpu_exception_info
846 DWORD exception_code;
847 DWORD exception_offset;
848 DWORD eip_offset;
851 static DWORD fpu_exception_handler(EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
852 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher)
854 struct fpu_exception_info *info = *(struct fpu_exception_info **)(frame + 1);
856 info->exception_code = rec->ExceptionCode;
857 info->exception_offset = (BYTE *)rec->ExceptionAddress - (BYTE *)code_mem;
858 info->eip_offset = context->Eip - (DWORD)code_mem;
860 ++context->Eip;
861 return ExceptionContinueExecution;
864 static void test_fpu_exceptions(void)
866 static const BYTE fpu_exception_test_ie[] =
868 0x83, 0xec, 0x04, /* sub $0x4,%esp */
869 0x66, 0xc7, 0x04, 0x24, 0xfe, 0x03, /* movw $0x3fe,(%esp) */
870 0x9b, 0xd9, 0x7c, 0x24, 0x02, /* fstcw 0x2(%esp) */
871 0xd9, 0x2c, 0x24, /* fldcw (%esp) */
872 0xd9, 0xee, /* fldz */
873 0xd9, 0xe8, /* fld1 */
874 0xde, 0xf1, /* fdivp */
875 0xdd, 0xd8, /* fstp %st(0) */
876 0xdd, 0xd8, /* fstp %st(0) */
877 0x9b, /* fwait */
878 0xdb, 0xe2, /* fnclex */
879 0xd9, 0x6c, 0x24, 0x02, /* fldcw 0x2(%esp) */
880 0x83, 0xc4, 0x04, /* add $0x4,%esp */
881 0xc3, /* ret */
884 static const BYTE fpu_exception_test_de[] =
886 0x83, 0xec, 0x04, /* sub $0x4,%esp */
887 0x66, 0xc7, 0x04, 0x24, 0xfb, 0x03, /* movw $0x3fb,(%esp) */
888 0x9b, 0xd9, 0x7c, 0x24, 0x02, /* fstcw 0x2(%esp) */
889 0xd9, 0x2c, 0x24, /* fldcw (%esp) */
890 0xdd, 0xd8, /* fstp %st(0) */
891 0xd9, 0xee, /* fldz */
892 0xd9, 0xe8, /* fld1 */
893 0xde, 0xf1, /* fdivp */
894 0x9b, /* fwait */
895 0xdb, 0xe2, /* fnclex */
896 0xdd, 0xd8, /* fstp %st(0) */
897 0xdd, 0xd8, /* fstp %st(0) */
898 0xd9, 0x6c, 0x24, 0x02, /* fldcw 0x2(%esp) */
899 0x83, 0xc4, 0x04, /* add $0x4,%esp */
900 0xc3, /* ret */
903 struct fpu_exception_info info;
905 memset(&info, 0, sizeof(info));
906 run_exception_test(fpu_exception_handler, &info, fpu_exception_test_ie, sizeof(fpu_exception_test_ie));
907 ok(info.exception_code == EXCEPTION_FLT_STACK_CHECK,
908 "Got exception code %#x, expected EXCEPTION_FLT_STACK_CHECK\n", info.exception_code);
909 ok(info.exception_offset == 0x19, "Got exception offset %#x, expected 0x19\n", info.exception_offset);
910 ok(info.eip_offset == 0x1b, "Got EIP offset %#x, expected 0x1b\n", info.eip_offset);
912 memset(&info, 0, sizeof(info));
913 run_exception_test(fpu_exception_handler, &info, fpu_exception_test_de, sizeof(fpu_exception_test_de));
914 ok(info.exception_code == EXCEPTION_FLT_DIVIDE_BY_ZERO,
915 "Got exception code %#x, expected EXCEPTION_FLT_DIVIDE_BY_ZERO\n", info.exception_code);
916 ok(info.exception_offset == 0x17, "Got exception offset %#x, expected 0x17\n", info.exception_offset);
917 ok(info.eip_offset == 0x19, "Got EIP offset %#x, expected 0x19\n", info.eip_offset);
920 #endif /* __i386__ */
922 START_TEST(exception)
924 #ifdef __i386__
925 HMODULE hntdll = GetModuleHandleA("ntdll.dll");
927 pNtCurrentTeb = (void *)GetProcAddress( hntdll, "NtCurrentTeb" );
928 pNtGetContextThread = (void *)GetProcAddress( hntdll, "NtGetContextThread" );
929 pNtSetContextThread = (void *)GetProcAddress( hntdll, "NtSetContextThread" );
930 pNtReadVirtualMemory = (void *)GetProcAddress( hntdll, "NtReadVirtualMemory" );
931 pRtlRaiseException = (void *)GetProcAddress( hntdll, "RtlRaiseException" );
932 pNtTerminateProcess = (void *)GetProcAddress( hntdll, "NtTerminateProcess" );
933 pRtlAddVectoredExceptionHandler = (void *)GetProcAddress( hntdll,
934 "RtlAddVectoredExceptionHandler" );
935 pRtlRemoveVectoredExceptionHandler = (void *)GetProcAddress( hntdll,
936 "RtlRemoveVectoredExceptionHandler" );
937 if (!pNtCurrentTeb)
939 skip( "NtCurrentTeb not found\n" );
940 return;
943 if (pRtlAddVectoredExceptionHandler && pRtlRemoveVectoredExceptionHandler)
944 have_vectored_api = TRUE;
945 else
946 skip("RtlAddVectoredExceptionHandler or RtlRemoveVectoredExceptionHandler not found\n");
948 /* 1024 byte should be sufficient */
949 code_mem = VirtualAlloc(NULL, 1024, MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE);
950 if(!code_mem) {
951 trace("VirtualAlloc failed\n");
952 return;
955 my_argc = winetest_get_mainargs( &my_argv );
956 if (my_argc >= 4)
958 void *addr;
959 sscanf( my_argv[3], "%p", &addr );
961 if (addr != &test_stage)
963 skip( "child process not mapped at same address (%p/%p)\n", &test_stage, addr);
964 return;
967 /* child must be run under a debugger */
968 if (!pNtCurrentTeb()->Peb->BeingDebugged)
970 ok(FALSE, "child process not being debugged?\n");
971 return;
974 if (pRtlRaiseException)
976 test_stage = 1;
977 run_rtlraiseexception_test(0x12345);
978 run_rtlraiseexception_test(EXCEPTION_BREAKPOINT);
979 run_rtlraiseexception_test(EXCEPTION_INVALID_HANDLE);
980 test_stage = 2;
981 run_rtlraiseexception_test(0x12345);
982 run_rtlraiseexception_test(EXCEPTION_BREAKPOINT);
983 run_rtlraiseexception_test(EXCEPTION_INVALID_HANDLE);
985 else
986 skip( "RtlRaiseException not found\n" );
988 /* rest of tests only run in parent */
989 return;
992 test_prot_fault();
993 test_exceptions();
994 test_rtlraiseexception();
995 test_debugger();
996 test_simd_exceptions();
997 test_fpu_exceptions();
999 VirtualFree(code_mem, 1024, MEM_RELEASE);
1000 #endif