Signed-off-by: Paul Gofman pgofman@codeweavers.com --- v2: - fix typo in the title.
dlls/ntdll/tests/exception.c | 88 +++++++++++++++++++++++++++++++++--- 1 file changed, 81 insertions(+), 7 deletions(-)
diff --git a/dlls/ntdll/tests/exception.c b/dlls/ntdll/tests/exception.c index 44b00ad7b00..fce1de385ef 100644 --- a/dlls/ntdll/tests/exception.c +++ b/dlls/ntdll/tests/exception.c @@ -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;
-
Paul Gofman