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ntdll/tests: Try to fail more gracefully on win9x. 

Link to NtCurrentTeb dynamically.
This commit is contained in:
Alexandre Julliard 2005-12-31 13:24:02 +01:00
parent 0ab7cfc5b2
commit f54a59c072
1 changed files with 16 additions and 5 deletions
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21
dlls/ntdll/tests/exception.c
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@ -18,6 +18,7 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <assert.h>
#include <stdarg.h>
#ifndef _WIN32_WINNT
@ -36,6 +37,8 @@
#ifdef __i386__
static struct _TEB * (WINAPI *pNtCurrentTeb)(void);
/* Test various instruction combinations that cause a protection fault on the i386,
* and check what the resulting exception looks like.
*/
@ -51,6 +54,8 @@ static const struct exception
} exceptions[] =
{
/* test some privileged instructions */
{ { 0xfb, 0xc3 }, /* sti; ret */
0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
{ { 0x6c, 0xc3 }, /* insb (%dx); ret */
0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
{ { 0x6d, 0xc3 }, /* insl (%dx); ret */
@ -77,8 +82,6 @@ static const struct exception
0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
{ { 0xfa, 0xc3 }, /* cli; ret */
0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
{ { 0xfb, 0xc3 }, /* sti; ret */
0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
/* test long jump to invalid selector */
{ { 0xea, 0, 0, 0, 0, 0, 0, 0xc3 }, /* ljmp $0,$0; ret */
@ -198,19 +201,27 @@ static void test_prot_fault(void)
const struct exception *except;
} exc_frame;
pNtCurrentTeb = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"), "NtCurrentTeb" );
assert( pNtCurrentTeb );
exc_frame.frame.Handler = handler;
exc_frame.frame.Prev = NtCurrentTeb()->Tib.ExceptionList;
NtCurrentTeb()->Tib.ExceptionList = &exc_frame.frame;
exc_frame.frame.Prev = pNtCurrentTeb()->Tib.ExceptionList;
pNtCurrentTeb()->Tib.ExceptionList = &exc_frame.frame;
for (i = 0; i < sizeof(exceptions)/sizeof(exceptions[0]); i++)
{
void (*func)(void) = (void *)exceptions[i].code;
exc_frame.except = &exceptions[i];
got_exception = 0;
func();
if (!i && !got_exception)
{
trace( "No exception, assuming win9x, no point in testing further\n" );
break;
}
ok( got_exception == (exceptions[i].status != 0),
"%u: bad exception count %d\n", i, got_exception );
}
NtCurrentTeb()->Tib.ExceptionList = exc_frame.frame.Prev;
pNtCurrentTeb()->Tib.ExceptionList = exc_frame.frame.Prev;
}
#endif /* __i386__ */