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ntdll: Support nested exceptions on x64.

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Signed-off-by: Paul Gofman <pgofman@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Paul Gofman 2020-08-14 12:08:25 +03:00 committed by Alexandre Julliard
parent 44a983f650
commit ae07938ba6
2 changed files with 67 additions and 3 deletions
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6
dlls/ntdll/signal_x86_64.c
View file

@ -380,10 +380,10 @@ NTSTATUS WINAPI RtlWow64SetThreadContext( HANDLE handle, const WOW64_CONTEXT *co
static DWORD __cdecl nested_exception_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
{
if (rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND)) return ExceptionContinueSearch;
if (!(rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND)))
rec->ExceptionFlags |= EH_NESTED_CALL;
/* FIXME */
return ExceptionNestedException;
return ExceptionContinueSearch;
}
/**********************************************************************

64
dlls/ntdll/tests/exception.c
View file

@ -68,6 +68,10 @@ typedef struct _RTL_UNLOAD_EVENT_TRACE
static RTL_UNLOAD_EVENT_TRACE *(WINAPI *pRtlGetUnloadEventTrace)(void);
static void (WINAPI *pRtlGetUnloadEventTraceEx)(ULONG **element_size, ULONG **element_count, void **event_trace);
#ifndef EH_NESTED_CALL
#define EH_NESTED_CALL 0x10
#endif
#if defined(__x86_64__)
typedef struct
{
@ -3782,6 +3786,65 @@ static void test_kiuserexceptiondispatcher(void)
ok(ret, "Got unexpected ret %#x, GetLastError() %u.\n", ret, GetLastError());
}
static BOOL got_nested_exception, got_prev_frame_exception;
static void *nested_exception_initial_frame;
static DWORD nested_exception_handler(EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher)
{
trace("nested_exception_handler Rip %p, Rsp %p, code %#x, flags %#x, ExceptionAddress %p.\n",
(void *)context->Rip, (void *)context->Rsp, rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress);
if (rec->ExceptionCode == 0x80000003
&& !(rec->ExceptionFlags & EH_NESTED_CALL))
{
ok(rec->NumberParameters == 1, "Got unexpected rec->NumberParameters %u.\n", rec->NumberParameters);
ok((void *)context->Rsp == frame, "Got unexpected frame %p.\n", frame);
ok(*(void **)frame == (char *)code_mem + 5, "Got unexpected *frame %p.\n", *(void **)frame);
ok(context->Rip == (ULONG_PTR)((char *)code_mem + 7), "Got unexpected Rip %#lx.\n", context->Rip);
nested_exception_initial_frame = frame;
RaiseException(0xdeadbeef, 0, 0, 0);
++context->Rip;
return ExceptionContinueExecution;
}
if (rec->ExceptionCode == 0xdeadbeef && rec->ExceptionFlags == EH_NESTED_CALL)
{
ok(!rec->NumberParameters, "Got unexpected rec->NumberParameters %u.\n", rec->NumberParameters);
got_nested_exception = TRUE;
ok(frame == nested_exception_initial_frame, "Got unexpected frame %p.\n", frame);
return ExceptionContinueSearch;
}
ok(rec->ExceptionCode == 0xdeadbeef && !rec->ExceptionFlags,
"Got unexpected exception code %#x, flags %#x.\n", rec->ExceptionCode, rec->ExceptionFlags);
ok(!rec->NumberParameters, "Got unexpected rec->NumberParameters %u.\n", rec->NumberParameters);
ok(frame == (void *)((BYTE *)nested_exception_initial_frame + 8),
"Got unexpected frame %p.\n", frame);
got_prev_frame_exception = TRUE;
return ExceptionContinueExecution;
}
static void test_nested_exception(void)
{
static const BYTE except_code[] =
{
0xe8, 0x02, 0x00, 0x00, 0x00, /* call nest */
0x90, /* nop */
0xc3, /* ret */
/* nest: */
0xcc, /* int3 */
0x90, /* nop */
0xc3, /* ret */
};
got_nested_exception = got_prev_frame_exception = FALSE;
run_exception_test(nested_exception_handler, NULL, except_code, ARRAY_SIZE(except_code), PAGE_EXECUTE_READ);
ok(got_nested_exception, "Did not get nested exception.\n");
ok(got_prev_frame_exception, "Did not get nested exception in the previous frame.\n");
}
#elif defined(__arm__)
static void test_thread_context(void)
@ -5450,6 +5513,7 @@ START_TEST(exception)
test_dpe_exceptions();
test_wow64_context();
test_kiuserexceptiondispatcher();
test_nested_exception();
if (pRtlAddFunctionTable && pRtlDeleteFunctionTable && pRtlInstallFunctionTableCallback && pRtlLookupFunctionEntry)
test_dynamic_unwind();