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ntdll/tests: Add test for preserving x87 fpu state when capturing context. 

Signed-off-by: Paul Gofman <gofmanp@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
stable
Paul Gofman 2019-03-04 16:05:15 +03:00 committed by Alexandre Julliard
parent 67f6c6c0c9
commit fddea78ac1
1 changed files with 26 additions and 5 deletions
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31
dlls/ntdll/tests/exception.c
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@ -1509,9 +1509,12 @@ static void test_thread_context(void)
struct expected
{
DWORD Eax, Ebx, Ecx, Edx, Esi, Edi, Ebp, Esp, Eip,
SegCs, SegDs, SegEs, SegFs, SegGs, SegSs, EFlags, prev_frame;
SegCs, SegDs, SegEs, SegFs, SegGs, SegSs, EFlags, prev_frame,
x87_control;
} expect;
NTSTATUS (*func_ptr)( struct expected *res, void *func, void *arg1, void *arg2 ) = (void *)code_mem;
NTSTATUS (*func_ptr)( struct expected *res, void *func, void *arg1, void *arg2,
DWORD *new_x87_control ) = (void *)code_mem;
DWORD new_x87_control;
static const BYTE call_func[] =
{
@ -1542,10 +1545,20 @@ static void test_thread_context(void)
0x8f, 0x40, 0x3c, /* popl 0x3c(%eax) */
0xff, 0x75, 0x00, /* pushl 0x0(%ebp) ; previous stack frame */
0x8f, 0x40, 0x40, /* popl 0x40(%eax) */
/* pushl $0x47f */
0x68, 0x7f, 0x04, 0x00, 0x00,
0x8f, 0x40, 0x44, /* popl 0x44(%eax) */
0xd9, 0x68, 0x44, /* fldcw 0x44(%eax) */
0x8b, 0x00, /* mov (%eax),%eax */
0xff, 0x75, 0x14, /* pushl 0x14(%ebp) */
0xff, 0x75, 0x10, /* pushl 0x10(%ebp) */
0xff, 0x55, 0x0c, /* call *0xc(%ebp) */
0x8b, 0x55, 0x18, /* mov 0x18(%ebp),%edx */
0x9b, 0xd9, 0x3a, /* fstcw (%edx) */
0xdb, 0xe3, /* fninit */
0xc9, /* leave */
0xc3, /* ret */
};
@ -1557,7 +1570,7 @@ static void test_thread_context(void)
memset( &context, 0xcc, sizeof(context) );
memset( &expect, 0xcc, sizeof(expect) );
func_ptr( &expect, pRtlCaptureContext, &context, 0 );
func_ptr( &expect, pRtlCaptureContext, &context, 0, &new_x87_control );
trace( "expect: eax=%08x ebx=%08x ecx=%08x edx=%08x esi=%08x edi=%08x ebp=%08x esp=%08x "
"eip=%08x cs=%04x ds=%04x es=%04x fs=%04x gs=%04x ss=%04x flags=%08x prev=%08x\n",
expect.Eax, expect.Ebx, expect.Ecx, expect.Edx, expect.Esi, expect.Edi,
@ -1593,8 +1606,9 @@ static void test_thread_context(void)
memset( &context, 0xcc, sizeof(context) );
memset( &expect, 0xcc, sizeof(expect) );
context.ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER | CONTEXT_SEGMENTS;
status = func_ptr( &expect, pNtGetContextThread, (void *)GetCurrentThread(), &context );
context.ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER | CONTEXT_SEGMENTS | CONTEXT_FLOATING_POINT;
status = func_ptr( &expect, pNtGetContextThread, (void *)GetCurrentThread(), &context, &new_x87_control );
ok( status == STATUS_SUCCESS, "NtGetContextThread failed %08x\n", status );
trace( "expect: eax=%08x ebx=%08x ecx=%08x edx=%08x esi=%08x edi=%08x ebp=%08x esp=%08x "
"eip=%08x cs=%04x ds=%04x es=%04x fs=%04x gs=%04x ss=%04x flags=%08x prev=%08x\n",
@ -1625,6 +1639,13 @@ static void test_thread_context(void)
ok( context.SegFs == LOWORD(expect.SegFs), "wrong SegFs %08x/%08x\n", context.SegFs, expect.SegFs );
ok( context.SegGs == LOWORD(expect.SegGs), "wrong SegGs %08x/%08x\n", context.SegGs, expect.SegGs );
ok( context.SegSs == LOWORD(expect.SegSs), "wrong SegSs %08x/%08x\n", context.SegSs, expect.SegGs );
ok( LOWORD(context.FloatSave.ControlWord) == LOWORD(expect.x87_control),
"wrong x87 control word %#x/%#x.\n", context.FloatSave.ControlWord, expect.x87_control );
todo_wine ok( LOWORD(expect.x87_control) == LOWORD(new_x87_control),
"x87 control word changed in NtGetContextThread() %#x/%#x.\n",
LOWORD(expect.x87_control), LOWORD(new_x87_control) );
#undef COMPARE
}