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ntdll/tests: Add a debugger around the exceptions. 

Shows that the first chance handler gets a unmodified context.
Shows that changing the context has no effect when exception is not handled by debugger.
This commit is contained in:
Peter Oberndorfer 2007-02-26 23:42:09 +01:00 committed by Alexandre Julliard
parent 00eca70b2a
commit 647d0d9b88
1 changed files with 154 additions and 21 deletions
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175
dlls/ntdll/tests/exception.c
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@ -19,6 +19,7 @@
*/
#include <stdarg.h>
#include <stdio.h>
#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x500 /* For NTSTATUS */
@ -35,6 +36,8 @@
#include "wine/test.h"
#ifdef __i386__
static int my_argc;
static char** my_argv;
static struct _TEB * (WINAPI *pNtCurrentTeb)(void);
static NTSTATUS (WINAPI *pNtGetContextThread)(HANDLE,CONTEXT*);
@ -42,6 +45,8 @@ static NTSTATUS (WINAPI *pNtSetContextThread)(HANDLE,CONTEXT*);
static NTSTATUS (WINAPI *pRtlRaiseException)(EXCEPTION_RECORD *rec);
static PVOID (WINAPI *pRtlAddVectoredExceptionHandler)(ULONG first, PVECTORED_EXCEPTION_HANDLER func);
static ULONG (WINAPI *pRtlRemoveVectoredExceptionHandler)(PVOID handler);
static NTSTATUS (WINAPI *pNtReadVirtualMemory)(HANDLE, const void*, void*, SIZE_T, SIZE_T*);
static NTSTATUS (WINAPI *pNtTerminateProcess)(HANDLE handle, LONG exit_code);
static void *code_mem;
/* Test various instruction combinations that cause a protection fault on the i386,
@ -198,6 +203,10 @@ LONG CALLBACK rtlraiseexception_vectored_handler(EXCEPTION_POINTERS *ExceptionIn
todo_wine {
ok(rec->ExceptionAddress == (char *)code_mem + 0xb, "ExceptionAddress at %p instead of %p\n",
rec->ExceptionAddress, (char *)code_mem + 0xb);
if (pNtCurrentTeb()->Peb->BeingDebugged)
ok((void *)context->Eax == pRtlRaiseException, "debugger managed to modify Eax to %x should be %p\n",
context->Eax, pRtlRaiseException);
}
/* check that context.Eip is fixed up only for EXCEPTION_BREAKPOINT
@ -306,6 +315,19 @@ static void run_rtlraiseexception_test(DWORD exceptioncode)
pNtCurrentTeb()->Tib.ExceptionList = frame.Prev;
}
static void test_rtlraiseexcpetion(void)
{
if (!pRtlRaiseException)
{
skip("RtlRaiseException not found\n");
return;
}
/* test without debugger */
run_rtlraiseexception_test(0x12345);
run_rtlraiseexception_test(EXCEPTION_BREAKPOINT);
run_rtlraiseexception_test(EXCEPTION_INVALID_HANDLE);
}
static DWORD handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
@ -512,36 +534,15 @@ static void test_exceptions(void)
CONTEXT ctx;
NTSTATUS res;
pNtGetContextThread = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"), "NtGetContextThread" );
pNtSetContextThread = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"), "NtSetContextThread" );
pRtlRaiseException = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"), "RtlRaiseException" );
pRtlAddVectoredExceptionHandler = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"),
"RtlAddVectoredExceptionHandler" );
pRtlRemoveVectoredExceptionHandler = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"),
"RtlRemoveVectoredExceptionHandler" );
if (!pNtGetContextThread || !pNtSetContextThread)
{
trace( "NtGetContextThread/NtSetContextThread not found, skipping tests\n" );
return;
}
if (pRtlAddVectoredExceptionHandler && pRtlRemoveVectoredExceptionHandler)
have_vectored_api = TRUE;
else
skip("RtlAddVectoredExceptionHandler or RtlRemoveVectoredExceptionHandler not found\n");
/* test handling of debug registers */
run_exception_test(dreg_handler, NULL, &segfault_code, sizeof(segfault_code));
if (pRtlRaiseException)
{
run_rtlraiseexception_test(0x12345);
run_rtlraiseexception_test(EXCEPTION_BREAKPOINT);
run_rtlraiseexception_test(EXCEPTION_INVALID_HANDLE);
}
else
skip( "RtlRaiseException not found\n" );
ctx.ContextFlags = CONTEXT_DEBUG_REGISTERS;
res = pNtGetContextThread(GetCurrentThread(), &ctx);
ok (res == STATUS_SUCCESS,"NtGetContextThread failed with %x\n", res);
@ -574,26 +575,158 @@ static void test_exceptions(void)
run_exception_test(int3_handler, NULL, int3_code, sizeof(int3_code));
}
static void test_debugger(void)
{
char cmdline[MAX_PATH];
PROCESS_INFORMATION pi;
STARTUPINFO si = { 0 };
DEBUG_EVENT de;
DWORD continuestatus;
PVOID code_mem_address = NULL;
NTSTATUS status;
SIZE_T size_read;
int counter = 0;
si.cb = sizeof(si);
if(!pNtGetContextThread || !pNtSetContextThread || !pNtReadVirtualMemory || !pNtTerminateProcess)
{
skip("NtGetContextThread, NtSetContextThread, NtReadVirtualMemory or NtTerminateProcess not found\n)");
return;
}
sprintf(cmdline, "%s %s %s", my_argv[0], my_argv[1], "debuggee");
ok(CreateProcess(NULL, cmdline, NULL, NULL, FALSE, DEBUG_PROCESS, NULL, NULL,
&si, &pi) != 0, "error: %u\n", GetLastError());
do
{
continuestatus = DBG_CONTINUE;
ok(WaitForDebugEvent(&de, INFINITE), "reading debug event\n");
if (de.dwThreadId != pi.dwThreadId)
{
trace("event %d not coming from main thread, ignoring\n", de.dwDebugEventCode);
ContinueDebugEvent(de.dwProcessId, de.dwThreadId, DBG_CONTINUE);
continue;
}
if (de.dwDebugEventCode == CREATE_PROCESS_DEBUG_EVENT)
{
if(de.u.CreateProcessInfo.lpBaseOfImage != pNtCurrentTeb()->Peb->ImageBaseAddress)
{
skip("child process loaded at different address, terminating it\n");
pNtTerminateProcess(pi.hProcess, 1);
}
}
else if (de.dwDebugEventCode == EXCEPTION_DEBUG_EVENT)
{
CONTEXT ctx;
counter++;
status = pNtReadVirtualMemory(pi.hProcess, &code_mem, &code_mem_address,
sizeof(code_mem_address), &size_read);
ok(!status,"NtReadVirtualMemory failed with 0x%x\n", status);
ctx.ContextFlags = CONTEXT_FULL;
status = pNtGetContextThread(pi.hThread, &ctx);
ok(!status, "NtGetContextThread failed with 0x%x\n", status);
trace("excpetion 0x%x at %p firstchance=%d Eip=0x%x, Eax=0x%x\n",
de.u.Exception.ExceptionRecord.ExceptionCode,
de.u.Exception.ExceptionRecord.ExceptionAddress, de.u.Exception.dwFirstChance, ctx.Eip, ctx.Eax);
if (counter > 100)
{
ok(FALSE, "got way too many exceptions, probaby caught in a infinite loop, terminating child\n");
pNtTerminateProcess(pi.hProcess, 1);
}
else if (counter >= 2) /* skip startup breakpoint */
{
ok((char *)ctx.Eip == (char *)code_mem_address + 0xb, "Eip at %x instead of %p\n",
ctx.Eip, (char *)code_mem_address + 0xb);
/* setting the context from debugger does not affect the context, the exception handlers gets */
/* uncomment once wine is fixed */
/* ctx.Eip = 0x12345; */
ctx.Eax = 0xf00f00f1;
status = pNtSetContextThread(pi.hThread, &ctx);
ok(!status, "NtSetContextThread failed with 0x%x\n", status);
if (de.u.Exception.dwFirstChance)
continuestatus = DBG_EXCEPTION_NOT_HANDLED;
}
}
ContinueDebugEvent(de.dwProcessId, de.dwThreadId, continuestatus);
} while (de.dwDebugEventCode != EXIT_PROCESS_DEBUG_EVENT);
ok(CloseHandle(pi.hThread) != 0, "error %u\n", GetLastError());
ok(CloseHandle(pi.hProcess) != 0, "error %u\n", GetLastError());
return;
}
#endif /* __i386__ */
START_TEST(exception)
{
#ifdef __i386__
pNtCurrentTeb = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"), "NtCurrentTeb" );
pNtGetContextThread = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"), "NtGetContextThread" );
pNtSetContextThread = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"), "NtSetContextThread" );
pNtReadVirtualMemory = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"), "NtReadVirtualMemory" );
pRtlRaiseException = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"), "RtlRaiseException" );
pNtTerminateProcess = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"), "NtTerminateProcess" );
pRtlAddVectoredExceptionHandler = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"),
"RtlAddVectoredExceptionHandler" );
pRtlRemoveVectoredExceptionHandler = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"),
"RtlRemoveVectoredExceptionHandler" );
if (!pNtCurrentTeb)
{
trace( "NtCurrentTeb not found, skipping tests\n" );
return;
}
if (pRtlAddVectoredExceptionHandler && pRtlRemoveVectoredExceptionHandler)
have_vectored_api = TRUE;
else
skip("RtlAddVectoredExceptionHandler or RtlRemoveVectoredExceptionHandler not found\n");
/* 1024 byte should be sufficient */
code_mem = VirtualAlloc(NULL, 1024, MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE);
if(!code_mem) {
trace("VirtualAlloc failed\n");
return;
}
my_argc = winetest_get_mainargs( &my_argv );
if (my_argc >= 3)
{
/* child must be run under a debugger */
if (!pNtCurrentTeb()->Peb->BeingDebugged)
{
ok(FALSE, "child process not being debugged?\n");
return;
}
if (pRtlRaiseException)
{
run_rtlraiseexception_test(0x12345);
run_rtlraiseexception_test(EXCEPTION_BREAKPOINT);
run_rtlraiseexception_test(EXCEPTION_INVALID_HANDLE);
}
else
skip( "RtlRaiseException not found\n" );
/* rest of tests only run in parent */
return;
}
test_prot_fault();
test_exceptions();
test_rtlraiseexcpetion();
test_debugger();
VirtualFree(code_mem, 1024, MEM_RELEASE);
#endif