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ntdll: Test that shows RtlRaiseException with EXCEPTION_BREAKPOINT mangles Eip of context.

oldstable
Peter Oberndorfer 2007-02-12 21:22:37 +01:00 committed by Alexandre Julliard
parent 90c0ffd45e
commit b54cecab40
1 changed files with 85 additions and 0 deletions
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85
dlls/ntdll/tests/exception.c
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@ -39,6 +39,7 @@
static struct _TEB * (WINAPI *pNtCurrentTeb)(void);
static NTSTATUS (WINAPI *pNtGetContextThread)(HANDLE,CONTEXT*);
static NTSTATUS (WINAPI *pNtSetContextThread)(HANDLE,CONTEXT*);
static NTSTATUS (WINAPI *pRtlRaiseException)(EXCEPTION_RECORD *rec);
static void *code_mem;
/* Test various instruction combinations that cause a protection fault on the i386,
@ -184,6 +185,79 @@ static void run_exception_test(const void *handler, const void* context,
pNtCurrentTeb()->Tib.ExceptionList = exc_frame.frame.Prev;
}
static DWORD rtlraiseexception_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
{
trace( "exception: %08x flags:%x addr:%p context: Eip:%x\n",
rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress, context->Eip );
todo_wine {
ok(rec->ExceptionAddress == (char *)code_mem + 0xb, "ExceptionAddress at %p instead of %p\n",
rec->ExceptionAddress, (char *)code_mem + 0xb);
}
/* check that context.Eip is fixed up only for EXCEPTION_BREAKPOINT
* even if raised by RtlRaiseException
*/
if(rec->ExceptionCode == EXCEPTION_BREAKPOINT)
{
todo_wine {
ok(context->Eip == (DWORD)code_mem + 0xa, "Eip at %x instead of %x\n",
context->Eip, (DWORD)code_mem + 0xa);
}
}
else
{
ok(context->Eip == (DWORD)code_mem + 0xb, "Eip at %x instead of %x\n",
context->Eip, (DWORD)code_mem + 0xb);
}
/* Eip in context is decreased by 1
* Increase it again, else execution will continue in the middle of a instruction */
if(rec->ExceptionCode == EXCEPTION_BREAKPOINT && (context->Eip == (DWORD)code_mem + 0xa))
context->Eip += 1;
return ExceptionContinueExecution;
}
static const BYTE call_one_arg_code[] = {
0x8b, 0x44, 0x24, 0x08, /* mov 0x8(%esp),%eax */
0x50, /* push %eax */
0x8b, 0x44, 0x24, 0x08, /* mov 0x8(%esp),%eax */
0xff, 0xd0, /* call *%eax */
0x90, /* nop */
0x90, /* nop */
0x90, /* nop */
0x90, /* nop */
0xc3, /* ret */
};
static void run_rtlraiseexception_test(DWORD exceptioncode)
{
EXCEPTION_REGISTRATION_RECORD frame;
EXCEPTION_RECORD record;
void (*func)(void* function, EXCEPTION_RECORD* record) = code_mem;
record.ExceptionCode = exceptioncode;
record.ExceptionFlags = 0;
record.ExceptionRecord = NULL;
record.ExceptionAddress = NULL; /* does not matter, copied return address */
record.NumberParameters = 0;
frame.Handler = rtlraiseexception_handler;
frame.Prev = pNtCurrentTeb()->Tib.ExceptionList;
memcpy(code_mem, call_one_arg_code, sizeof(call_one_arg_code));
pNtCurrentTeb()->Tib.ExceptionList = &frame;
func(pRtlRaiseException, &record);
pNtCurrentTeb()->Tib.ExceptionList = frame.Prev;
}
static DWORD handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
{
@ -391,6 +465,8 @@ static void test_exceptions(void)
pNtGetContextThread = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"), "NtGetContextThread" );
pNtSetContextThread = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"), "NtSetContextThread" );
pRtlRaiseException = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"), "RtlRaiseException" );
if (!pNtGetContextThread || !pNtSetContextThread)
{
trace( "NtGetContextThread/NtSetContextThread not found, skipping tests\n" );
@ -400,6 +476,15 @@ static void test_exceptions(void)
/* test handling of debug registers */
run_exception_test(dreg_handler, NULL, &segfault_code, sizeof(segfault_code));
if (pRtlRaiseException)
{
run_rtlraiseexception_test(0x12345);
run_rtlraiseexception_test(EXCEPTION_BREAKPOINT);
run_rtlraiseexception_test(EXCEPTION_INVALID_HANDLE);
}
else
skip( "RtlRaiseException not found\n" );
ctx.ContextFlags = CONTEXT_DEBUG_REGISTERS;
res = pNtGetContextThread(GetCurrentThread(), &ctx);
ok (res == STATUS_SUCCESS,"NtGetContextThread failed with %x\n", res);