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ntdll/tests: Test KiUserExceptionDispatcher with RtlUnwind on i386. 

Signed-off-by: Paul Gofman <pgofman@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Paul Gofman 2020-07-16 18:36:13 +03:00 committed by Alexandre Julliard
parent 12dba1b2ae
commit 2aa58e43a0
1 changed files with 81 additions and 7 deletions
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88
dlls/ntdll/tests/exception.c
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@ -1667,6 +1667,23 @@ static void *hook_KiUserExceptionDispatcher_eip;
static void *dbg_except_continue_handler_eip;
static void *hook_exception_address;
static struct
{
DWORD old_eax;
DWORD old_edx;
DWORD old_esi;
DWORD old_edi;
DWORD old_ebp;
DWORD old_esp;
DWORD new_eax;
DWORD new_edx;
DWORD new_esi;
DWORD new_edi;
DWORD new_ebp;
DWORD new_esp;
}
test_kiuserexceptiondispatcher_regs;
static DWORD dbg_except_continue_handler(EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher)
{
@ -1677,6 +1694,11 @@ static DWORD dbg_except_continue_handler(EXCEPTION_RECORD *rec, EXCEPTION_REGIST
got_exception = 1;
dbg_except_continue_handler_eip = (void *)context->Eip;
++context->Eip;
context->Eip = (DWORD)code_mem + 0x1c;
context->Eax = 0xdeadbeef;
context->Esi = 0xdeadbeef;
pRtlUnwind(NtCurrentTeb()->Tib.ExceptionList, (void *)context->Eip, rec, (void *)0xdeadbeef);
return ExceptionContinueExecution;
}
@ -1701,6 +1723,7 @@ static LONG WINAPI dbg_except_continue_vectored_handler(struct _EXCEPTION_POINTE
* software raised exception. */
context->Eip = (ULONG_PTR)rec->ExceptionAddress;
}
return EXCEPTION_CONTINUE_EXECUTION;
}
@ -1725,9 +1748,39 @@ void CDECL hook_KiUserExceptionDispatcher(EXCEPTION_RECORD *rec, CONTEXT *contex
static void test_kiuserexceptiondispatcher(void)
{
HMODULE hntdll = GetModuleHandleA("ntdll.dll");
static const BYTE except_code[] =
static BYTE except_code[] =
{
0xb9, /* mov imm32, %ecx */
/* offset: 0x1 */
0x00, 0x00, 0x00, 0x00,
0x89, 0x01, /* mov %eax, (%ecx) */
0x89, 0x51, 0x04, /* mov %edx, 0x4(%ecx) */
0x89, 0x71, 0x08, /* mov %esi, 0x8(%ecx) */
0x89, 0x79, 0x0c, /* mov %edi, 0xc(%ecx) */
0x89, 0x69, 0x10, /* mov %ebp, 0x10(%ecx) */
0x89, 0x61, 0x14, /* mov %esp, 0x14(%ecx) */
0x83, 0xc1, 0x18, /* add $0x18, %ecx */
/* offset: 0x19 */
0xcc, /* int3 */
0x0f, 0x0b, /* ud2, illegal instruction */
/* offset: 0x1c */
0xb9, /* mov imm32, %ecx */
/* offset: 0x1d */
0x00, 0x00, 0x00, 0x00,
0x89, 0x01, /* mov %eax, (%ecx) */
0x89, 0x51, 0x04, /* mov %edx, 0x4(%ecx) */
0x89, 0x71, 0x08, /* mov %esi, 0x8(%ecx) */
0x89, 0x79, 0x0c, /* mov %edi, 0xc(%ecx) */
0x89, 0x69, 0x10, /* mov %ebp, 0x10(%ecx) */
0x89, 0x61, 0x14, /* mov %esp, 0x14(%ecx) */
0x67, 0x48, 0x8b, 0x71, 0xf0, /* mov -0x10(%ecx),%esi */
0xc3, /* ret */
};
static BYTE hook_trampoline[] =
@ -1745,6 +1798,7 @@ static void test_kiuserexceptiondispatcher(void)
void *phook_trampoline = hook_trampoline;
DWORD old_protect1, old_protect2;
EXCEPTION_RECORD record;
void *bpt_address;
BYTE *ptr;
BOOL ret;
@ -1755,6 +1809,15 @@ static void test_kiuserexceptiondispatcher(void)
return;
}
if (!pRtlUnwind)
{
win_skip("RtlUnwind is not available.\n");
return;
}
*(DWORD *)(except_code + 1) = (DWORD)&test_kiuserexceptiondispatcher_regs;
*(DWORD *)(except_code + 0x1d) = (DWORD)&test_kiuserexceptiondispatcher_regs.new_eax;
*(unsigned int *)(hook_trampoline + 2) = (ULONG_PTR)&phook_KiUserExceptionDispatcher;
*(unsigned int *)(hook_trampoline + 8) = (ULONG_PTR)&pKiUserExceptionDispatcher;
@ -1786,13 +1849,24 @@ static void test_kiuserexceptiondispatcher(void)
ok(got_exception, "Handler was not called.\n");
ok(hook_called, "Hook was not called.\n");
ok(hook_exception_address == code_mem || broken(!hook_exception_address) /* Win2008 */,
ok(test_kiuserexceptiondispatcher_regs.new_eax == 0xdeadbeef, "Got unexpected eax %#x.\n",
test_kiuserexceptiondispatcher_regs.new_eax);
ok(test_kiuserexceptiondispatcher_regs.new_esi == 0xdeadbeef, "Got unexpected esi %#x.\n",
test_kiuserexceptiondispatcher_regs.new_esi);
ok(test_kiuserexceptiondispatcher_regs.old_edi
== test_kiuserexceptiondispatcher_regs.new_edi, "edi does not match.\n");
ok(test_kiuserexceptiondispatcher_regs.old_ebp
== test_kiuserexceptiondispatcher_regs.new_ebp, "ebp does not match.\n");
bpt_address = (BYTE *)code_mem + 0x19;
ok(hook_exception_address == bpt_address || broken(!hook_exception_address) /* Win2008 */,
"Got unexpected exception address %p, expected %p.\n",
hook_exception_address, code_mem);
ok(hook_KiUserExceptionDispatcher_eip == code_mem, "Got unexpected exception address %p, expected %p.\n",
hook_KiUserExceptionDispatcher_eip, code_mem);
ok(dbg_except_continue_handler_eip == code_mem, "Got unexpected exception address %p, expected %p.\n",
dbg_except_continue_handler_eip, code_mem);
hook_exception_address, bpt_address);
ok(hook_KiUserExceptionDispatcher_eip == bpt_address, "Got unexpected exception address %p, expected %p.\n",
hook_KiUserExceptionDispatcher_eip, bpt_address);
ok(dbg_except_continue_handler_eip == bpt_address, "Got unexpected exception address %p, expected %p.\n",
dbg_except_continue_handler_eip, bpt_address);
record.ExceptionCode = 0x80000003;
record.ExceptionFlags = 0;