/* * Unit test suite for ntdll exceptions * * Copyright 2005 Alexandre Julliard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #include #include #ifndef _WIN32_WINNT #define _WIN32_WINNT 0x500 /* For NTSTATUS */ #endif #include "ntstatus.h" #define WIN32_NO_STATUS #include "windef.h" #include "winbase.h" #include "winnt.h" #include "winreg.h" #include "winternl.h" #include "excpt.h" #include "wine/test.h" #ifdef __i386__ static int my_argc; static char** my_argv; static int test_stage; static struct _TEB * (WINAPI *pNtCurrentTeb)(void); static NTSTATUS (WINAPI *pNtGetContextThread)(HANDLE,CONTEXT*); 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, * and check what the resulting exception looks like. */ static const struct exception { BYTE code[18]; /* asm code */ BYTE offset; /* offset of faulting instruction */ BYTE length; /* length of faulting instruction */ NTSTATUS status; /* expected status code */ DWORD nb_params; /* expected number of parameters */ DWORD params[4]; /* expected parameters */ } 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 */ 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 }, { { 0x6e, 0xc3 }, /* outsb (%dx); ret */ 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 }, { { 0x6f, 0xc3 }, /* outsl (%dx); ret */ 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 }, { { 0xe4, 0x11, 0xc3 }, /* inb $0x11,%al; ret */ 0, 2, STATUS_PRIVILEGED_INSTRUCTION, 0 }, { { 0xe5, 0x11, 0xc3 }, /* inl $0x11,%eax; ret */ 0, 2, STATUS_PRIVILEGED_INSTRUCTION, 0 }, { { 0xe6, 0x11, 0xc3 }, /* outb %al,$0x11; ret */ 0, 2, STATUS_PRIVILEGED_INSTRUCTION, 0 }, { { 0xe7, 0x11, 0xc3 }, /* outl %eax,$0x11; ret */ 0, 2, STATUS_PRIVILEGED_INSTRUCTION, 0 }, { { 0xed, 0xc3 }, /* inl (%dx),%eax; ret */ 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 }, { { 0xee, 0xc3 }, /* outb %al,(%dx); ret */ 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 }, { { 0xef, 0xc3 }, /* outl %eax,(%dx); ret */ 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 }, { { 0xf4, 0xc3 }, /* hlt; ret */ 0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 }, { { 0xfa, 0xc3 }, /* cli; 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 */ 0, 7, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } }, /* test iret to invalid selector */ { { 0x6a, 0x00, 0x6a, 0x00, 0x6a, 0x00, 0xcf, 0x83, 0xc4, 0x0c, 0xc3 }, /* pushl $0; pushl $0; pushl $0; iret; addl $12,%esp; ret */ 6, 1, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } }, /* test loading an invalid selector */ { { 0xb8, 0xef, 0xbe, 0x00, 0x00, 0x8e, 0xe8, 0xc3 }, /* mov $beef,%ax; mov %ax,%gs; ret */ 5, 2, STATUS_ACCESS_VIOLATION, 2, { 0, 0xbee8 } }, /* test accessing a zero selector */ { { 0x06, 0x31, 0xc0, 0x8e, 0xc0, 0x26, 0xa1, 0, 0, 0, 0, 0x07, 0xc3 }, /* push %es; xor %eax,%eax; mov %ax,%es; mov %es:(0),%ax; pop %es */ 5, 6, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } }, /* test moving %cs -> %ss */ { { 0x0e, 0x17, 0x58, 0xc3 }, /* pushl %cs; popl %ss; popl %eax; ret */ 1, 1, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } }, /* test overlong instruction (limit is 16 bytes) */ { { 0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0xfa,0xc3 }, 0, 16, STATUS_ILLEGAL_INSTRUCTION, 0 }, { { 0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0xfa,0xc3 }, 0, 15, STATUS_PRIVILEGED_INSTRUCTION, 0 }, /* test invalid interrupt */ { { 0xcd, 0xff, 0xc3 }, /* int $0xff; ret */ 0, 2, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } }, /* test moves to/from Crx */ { { 0x0f, 0x20, 0xc0, 0xc3 }, /* movl %cr0,%eax; ret */ 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 }, { { 0x0f, 0x20, 0xe0, 0xc3 }, /* movl %cr4,%eax; ret */ 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 }, { { 0x0f, 0x22, 0xc0, 0xc3 }, /* movl %eax,%cr0; ret */ 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 }, { { 0x0f, 0x22, 0xe0, 0xc3 }, /* movl %eax,%cr4; ret */ 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 }, /* test moves to/from Drx */ { { 0x0f, 0x21, 0xc0, 0xc3 }, /* movl %dr0,%eax; ret */ 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 }, { { 0x0f, 0x21, 0xc8, 0xc3 }, /* movl %dr1,%eax; ret */ 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 }, { { 0x0f, 0x21, 0xf8, 0xc3 }, /* movl %dr7,%eax; ret */ 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 }, { { 0x0f, 0x23, 0xc0, 0xc3 }, /* movl %eax,%dr0; ret */ 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 }, { { 0x0f, 0x23, 0xc8, 0xc3 }, /* movl %eax,%dr1; ret */ 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 }, { { 0x0f, 0x23, 0xf8, 0xc3 }, /* movl %eax,%dr7; ret */ 0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 }, /* test memory reads */ { { 0xa1, 0xfc, 0xff, 0xff, 0xff, 0xc3 }, /* movl 0xfffffffc,%eax; ret */ 0, 5, STATUS_ACCESS_VIOLATION, 2, { 0, 0xfffffffc } }, { { 0xa1, 0xfd, 0xff, 0xff, 0xff, 0xc3 }, /* movl 0xfffffffd,%eax; ret */ 0, 5, STATUS_ACCESS_VIOLATION, 2, { 0, 0xfffffffd } }, { { 0xa1, 0xfe, 0xff, 0xff, 0xff, 0xc3 }, /* movl 0xfffffffe,%eax; ret */ 0, 5, STATUS_ACCESS_VIOLATION, 2, { 0, 0xfffffffe } }, { { 0xa1, 0xff, 0xff, 0xff, 0xff, 0xc3 }, /* movl 0xffffffff,%eax; ret */ 0, 5, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } }, /* test memory writes */ { { 0xa3, 0xfc, 0xff, 0xff, 0xff, 0xc3 }, /* movl %eax,0xfffffffc; ret */ 0, 5, STATUS_ACCESS_VIOLATION, 2, { 1, 0xfffffffc } }, { { 0xa3, 0xfd, 0xff, 0xff, 0xff, 0xc3 }, /* movl %eax,0xfffffffd; ret */ 0, 5, STATUS_ACCESS_VIOLATION, 2, { 1, 0xfffffffd } }, { { 0xa3, 0xfe, 0xff, 0xff, 0xff, 0xc3 }, /* movl %eax,0xfffffffe; ret */ 0, 5, STATUS_ACCESS_VIOLATION, 2, { 1, 0xfffffffe } }, { { 0xa3, 0xff, 0xff, 0xff, 0xff, 0xc3 }, /* movl %eax,0xffffffff; ret */ 0, 5, STATUS_ACCESS_VIOLATION, 2, { 1, 0xffffffff } }, }; static int got_exception; static BOOL have_vectored_api; static void run_exception_test(void *handler, const void* context, const void *code, unsigned int code_size) { struct { EXCEPTION_REGISTRATION_RECORD frame; const void *context; } exc_frame; void (*func)(void) = code_mem; exc_frame.frame.Handler = handler; exc_frame.frame.Prev = pNtCurrentTeb()->Tib.ExceptionList; exc_frame.context = context; memcpy(code_mem, code, code_size); pNtCurrentTeb()->Tib.ExceptionList = &exc_frame.frame; func(); pNtCurrentTeb()->Tib.ExceptionList = exc_frame.frame.Prev; } LONG CALLBACK rtlraiseexception_vectored_handler(EXCEPTION_POINTERS *ExceptionInfo) { PCONTEXT context = ExceptionInfo->ContextRecord; PEXCEPTION_RECORD rec = ExceptionInfo->ExceptionRecord; trace("vect. handler %08x addr:%p context.Eip:%x\n", rec->ExceptionCode, rec->ExceptionAddress, context->Eip); 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 * even if raised by RtlRaiseException */ if(rec->ExceptionCode == EXCEPTION_BREAKPOINT) { ok(context->Eip == (DWORD)code_mem + 0xa, "Eip at %x instead of %x\n", context->Eip, (DWORD)code_mem + 0xa); } else { ok(context->Eip == (DWORD)code_mem + 0xb, "Eip at %x instead of %x\n", context->Eip, (DWORD)code_mem + 0xb); } /* test if context change is preserved from vectored handler to stack handlers */ context->Eax = 0xf00f00f0; return EXCEPTION_CONTINUE_SEARCH; } static DWORD rtlraiseexception_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame, CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher ) { trace( "exception: %08x flags:%x addr:%p context: Eip:%x\n", rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress, context->Eip ); todo_wine { ok(rec->ExceptionAddress == (char *)code_mem + 0xb, "ExceptionAddress at %p instead of %p\n", rec->ExceptionAddress, (char *)code_mem + 0xb); } /* check that context.Eip is fixed up only for EXCEPTION_BREAKPOINT * even if raised by RtlRaiseException */ if(rec->ExceptionCode == EXCEPTION_BREAKPOINT) { ok(context->Eip == (DWORD)code_mem + 0xa, "Eip at %x instead of %x\n", context->Eip, (DWORD)code_mem + 0xa); } else { ok(context->Eip == (DWORD)code_mem + 0xb, "Eip at %x instead of %x\n", context->Eip, (DWORD)code_mem + 0xb); } if(have_vectored_api) ok(context->Eax == 0xf00f00f0, "Eax is %x, should have been set to 0xf00f00f0 in vectored handler\n", context->Eax); /* give the debugger a chance to examine the state a second time */ /* without the exception handler changing Eip */ if (test_stage == 2) return ExceptionContinueSearch; /* Eip in context is decreased by 1 * Increase it again, else execution will continue in the middle of a instruction */ if(rec->ExceptionCode == EXCEPTION_BREAKPOINT && (context->Eip == (DWORD)code_mem + 0xa)) context->Eip += 1; return ExceptionContinueExecution; } static const BYTE call_one_arg_code[] = { 0x8b, 0x44, 0x24, 0x08, /* mov 0x8(%esp),%eax */ 0x50, /* push %eax */ 0x8b, 0x44, 0x24, 0x08, /* mov 0x8(%esp),%eax */ 0xff, 0xd0, /* call *%eax */ 0x90, /* nop */ 0x90, /* nop */ 0x90, /* nop */ 0x90, /* nop */ 0xc3, /* ret */ }; static void run_rtlraiseexception_test(DWORD exceptioncode) { EXCEPTION_REGISTRATION_RECORD frame; EXCEPTION_RECORD record; PVOID vectored_handler = NULL; void (*func)(void* function, EXCEPTION_RECORD* record) = code_mem; record.ExceptionCode = exceptioncode; record.ExceptionFlags = 0; record.ExceptionRecord = NULL; record.ExceptionAddress = NULL; /* does not matter, copied return address */ record.NumberParameters = 0; frame.Handler = rtlraiseexception_handler; frame.Prev = pNtCurrentTeb()->Tib.ExceptionList; memcpy(code_mem, call_one_arg_code, sizeof(call_one_arg_code)); pNtCurrentTeb()->Tib.ExceptionList = &frame; if (have_vectored_api) { vectored_handler = pRtlAddVectoredExceptionHandler(TRUE, &rtlraiseexception_vectored_handler); ok(vectored_handler != 0, "RtlAddVectoredExceptionHandler failed\n"); } func(pRtlRaiseException, &record); if (have_vectored_api) pRtlRemoveVectoredExceptionHandler(vectored_handler); pNtCurrentTeb()->Tib.ExceptionList = frame.Prev; } static void test_rtlraiseexception(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 ) { const struct exception *except = *(const struct exception **)(frame + 1); unsigned int i, entry = except - exceptions; got_exception++; trace( "exception: %x flags:%x addr:%p\n", rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress ); ok( rec->ExceptionCode == except->status, "%u: Wrong exception code %x/%x\n", entry, rec->ExceptionCode, except->status ); ok( rec->ExceptionAddress == (char*)code_mem + except->offset, "%u: Wrong exception address %p/%p\n", entry, rec->ExceptionAddress, (char*)code_mem + except->offset ); ok( rec->NumberParameters == except->nb_params, "%u: Wrong number of parameters %u/%u\n", entry, rec->NumberParameters, except->nb_params ); /* Most CPUs (except Intel Core apparently) report a segment limit violation */ /* instead of page faults for accesses beyond 0xffffffff */ if (except->nb_params == 2 && except->params[1] >= 0xfffffffd) { if (rec->ExceptionInformation[0] == 0 && rec->ExceptionInformation[1] == 0xffffffff) goto skip_params; } for (i = 0; i < rec->NumberParameters; i++) ok( rec->ExceptionInformation[i] == except->params[i], "%u: Wrong parameter %d: %lx/%x\n", entry, i, rec->ExceptionInformation[i], except->params[i] ); skip_params: /* don't handle exception if it's not the address we expected */ if (rec->ExceptionAddress != (char*)code_mem + except->offset) return ExceptionContinueSearch; context->Eip += except->length; return ExceptionContinueExecution; } static void test_prot_fault(void) { unsigned int i; for (i = 0; i < sizeof(exceptions)/sizeof(exceptions[0]); i++) { got_exception = 0; run_exception_test(handler, &exceptions[i], &exceptions[i].code, sizeof(exceptions[i].code)); 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 ); } } /* test handling of debug registers */ static DWORD dreg_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame, CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher ) { context->Eip += 2; /* Skips the popl (%eax) */ context->Dr0 = 0x42424242; context->Dr1 = 0; context->Dr2 = 0; context->Dr3 = 0; context->Dr6 = 0; context->Dr7 = 0x155; return ExceptionContinueExecution; } static const BYTE segfault_code[5] = { 0x31, 0xc0, /* xor %eax,%eax */ 0x8f, 0x00, /* popl (%eax) - cause exception */ 0xc3 /* ret */ }; /* test the single step exception behaviour */ static DWORD single_step_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame, CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher ) { got_exception++; ok (!(context->EFlags & 0x100), "eflags has single stepping bit set\n"); if( got_exception < 3) context->EFlags |= 0x100; /* single step until popf instruction */ else { /* show that the last single step exception on the popf instruction * (which removed the TF bit), still is a EXCEPTION_SINGLE_STEP exception */ ok( rec->ExceptionCode == EXCEPTION_SINGLE_STEP, "exception is not EXCEPTION_SINGLE_STEP: %x\n", rec->ExceptionCode); } return ExceptionContinueExecution; } static const BYTE single_stepcode[] = { 0x9c, /* pushf */ 0x58, /* pop %eax */ 0x0d,0,1,0,0, /* or $0x100,%eax */ 0x50, /* push %eax */ 0x9d, /* popf */ 0x35,0,1,0,0, /* xor $0x100,%eax */ 0x50, /* push %eax */ 0x9d, /* popf */ 0xc3 }; /* Test the alignment check (AC) flag handling. */ static const BYTE align_check_code[] = { 0x55, /* push %ebp */ 0x89,0xe5, /* mov %esp,%ebp */ 0x9c, /* pushf */ 0x58, /* pop %eax */ 0x0d,0,0,4,0, /* or $0x40000,%eax */ 0x50, /* push %eax */ 0x9d, /* popf */ 0x89,0xe0, /* mov %esp, %eax */ 0x8b,0x40,0x1, /* mov 0x1(%eax), %eax - cause exception */ 0x9c, /* pushf */ 0x58, /* pop %eax */ 0x35,0,0,4,0, /* xor $0x40000,%eax */ 0x50, /* push %eax */ 0x9d, /* popf */ 0x5d, /* pop %ebp */ 0xc3, /* ret */ }; static DWORD align_check_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame, CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher ) { ok (!(context->EFlags & 0x40000), "eflags has AC bit set\n"); got_exception++; return ExceptionContinueExecution; } /* Test the direction flag handling. */ static const BYTE direction_flag_code[] = { 0x55, /* push %ebp */ 0x89,0xe5, /* mov %esp,%ebp */ 0xfd, /* std */ 0xfa, /* cli - cause exception */ 0x5d, /* pop %ebp */ 0xc3, /* ret */ }; static DWORD direction_flag_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame, CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher ) { #ifdef __GNUC__ unsigned int flags; __asm__("pushfl; popl %0" : "=r" (flags) ); ok( !(flags & 0x400), "eflags has DF bit set\n" ); #endif ok( context->EFlags & 0x400, "context eflags has DF bit cleared\n" ); got_exception++; context->Eip++; /* skip cli */ return ExceptionContinueExecution; } /* test single stepping over hardware breakpoint */ static DWORD bpx_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame, CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher ) { got_exception++; ok( rec->ExceptionCode == EXCEPTION_SINGLE_STEP, "wrong exception code: %x\n", rec->ExceptionCode); if(got_exception == 1) { /* hw bp exception on first nop */ ok( context->Eip == (DWORD)code_mem, "eip is wrong: %x instead of %x\n", context->Eip, (DWORD)code_mem); ok( (context->Dr6 & 0xf) == 1, "B0 flag is not set in Dr6\n"); ok( !(context->Dr6 & 0x4000), "BS flag is set in Dr6\n"); context->Dr0 = context->Dr0 + 1; /* set hw bp again on next instruction */ context->EFlags |= 0x100; /* enable single stepping */ } else if( got_exception == 2) { /* single step exception on second nop */ ok( context->Eip == (DWORD)code_mem + 1, "eip is wrong: %x instead of %x\n", context->Eip, (DWORD)code_mem + 1); ok( (context->Dr6 & 0x4000), "BS flag is not set in Dr6\n"); /* depending on the win version the B0 bit is already set here as well ok( (context->Dr6 & 0xf) == 0, "B0...3 flags in Dr6 shouldn't be set\n"); */ context->EFlags |= 0x100; } else if( got_exception == 3) { /* hw bp exception on second nop */ ok( context->Eip == (DWORD)code_mem + 1, "eip is wrong: %x instead of %x\n", context->Eip, (DWORD)code_mem + 1); ok( (context->Dr6 & 0xf) == 1, "B0 flag is not set in Dr6\n"); ok( !(context->Dr6 & 0x4000), "BS flag is set in Dr6\n"); context->Dr0 = 0; /* clear breakpoint */ context->EFlags |= 0x100; } else { /* single step exception on ret */ ok( context->Eip == (DWORD)code_mem + 2, "eip is wrong: %x instead of %x\n", context->Eip, (DWORD)code_mem + 2); ok( (context->Dr6 & 0xf) == 0, "B0...3 flags in Dr6 shouldn't be set\n"); ok( (context->Dr6 & 0x4000), "BS flag is not set in Dr6\n"); } context->Dr6 = 0; /* clear status register */ return ExceptionContinueExecution; } static const BYTE dummy_code[] = { 0x90, 0x90, 0xc3 }; /* nop, nop, ret */ /* test int3 handling */ static DWORD int3_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame, CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher ) { ok( rec->ExceptionAddress == code_mem, "exception address not at: %p, but at %p\n", code_mem, rec->ExceptionAddress); ok( context->Eip == (DWORD)code_mem, "eip not at: %p, but at %#x\n", code_mem, context->Eip); if(context->Eip == (DWORD)code_mem) context->Eip++; /* skip breakpoint */ return ExceptionContinueExecution; } static const BYTE int3_code[] = { 0xCC, 0xc3 }; /* int 3, ret */ static void test_exceptions(void) { CONTEXT ctx; NTSTATUS res; if (!pNtGetContextThread || !pNtSetContextThread) { skip( "NtGetContextThread/NtSetContextThread not found\n" ); return; } /* test handling of debug registers */ run_exception_test(dreg_handler, NULL, &segfault_code, sizeof(segfault_code)); ctx.ContextFlags = CONTEXT_DEBUG_REGISTERS; res = pNtGetContextThread(GetCurrentThread(), &ctx); ok (res == STATUS_SUCCESS,"NtGetContextThread failed with %x\n", res); ok(ctx.Dr0 == 0x42424242,"failed to set debugregister 0 to 0x42424242, got %x\n", ctx.Dr0); ok((ctx.Dr7 & ~0xdc00) == 0x155,"failed to set debugregister 7 to 0x155, got %x\n", ctx.Dr7); /* test single stepping behavior */ got_exception = 0; run_exception_test(single_step_handler, NULL, &single_stepcode, sizeof(single_stepcode)); ok(got_exception == 3, "expected 3 single step exceptions, got %d\n", got_exception); /* test alignment exceptions */ got_exception = 0; run_exception_test(align_check_handler, NULL, align_check_code, sizeof(align_check_code)); ok(got_exception == 0, "got %d alignment faults, expected 0\n", got_exception); /* test direction flag */ got_exception = 0; run_exception_test(direction_flag_handler, NULL, direction_flag_code, sizeof(direction_flag_code)); ok(got_exception == 1, "got %d exceptions, expected 1\n", got_exception); /* test single stepping over hardware breakpoint */ memset(&ctx, 0, sizeof(ctx)); ctx.Dr0 = (DWORD) code_mem; /* set hw bp on first nop */ ctx.Dr7 = 3; ctx.ContextFlags = CONTEXT_DEBUG_REGISTERS; res = pNtSetContextThread( GetCurrentThread(), &ctx); ok( res == STATUS_SUCCESS, "NtSetContextThread faild with %x\n", res); got_exception = 0; run_exception_test(bpx_handler, NULL, dummy_code, sizeof(dummy_code)); ok( got_exception == 4,"expected 4 exceptions, got %d\n", got_exception); /* test int3 handling */ 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; BOOL ret; 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 %p", my_argv[0], my_argv[1], "debuggee", &test_stage); ret = CreateProcess(NULL, cmdline, NULL, NULL, FALSE, DEBUG_PROCESS, NULL, NULL, &si, &pi); ok(ret, "could not create child process error: %u\n", GetLastError()); if (!ret) return; 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, 0); } } else if (de.dwDebugEventCode == EXCEPTION_DEBUG_EVENT) { CONTEXT ctx; int stage; 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); status = pNtReadVirtualMemory(pi.hProcess, &test_stage, &stage, sizeof(stage), &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("exception 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 */ { if (stage == 1) { 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; /* let the debuggee handle the exception */ continuestatus = DBG_EXCEPTION_NOT_HANDLED; } else if (stage == 2) { if (de.u.Exception.dwFirstChance) { /* debugger gets first chance exception with unmodified ctx.Eip */ ok((char *)ctx.Eip == (char *)code_mem_address + 0xb, "Eip at 0x%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; /* pass exception to debuggee * exception will not be handled and * a second chance exception will be raised */ continuestatus = DBG_EXCEPTION_NOT_HANDLED; } else { /* debugger gets context after exception handler has played with it */ /* ctx.Eip is the same value the exception handler got */ if (de.u.Exception.ExceptionRecord.ExceptionCode == EXCEPTION_BREAKPOINT) { ok((char *)ctx.Eip == (char *)code_mem_address + 0xa, "Eip at 0x%x instead of %p\n", ctx.Eip, (char *)code_mem_address + 0xa); /* need to fixup Eip for debuggee */ if ((char *)ctx.Eip == (char *)code_mem_address + 0xa) ctx.Eip += 1; } else ok((char *)ctx.Eip == (char *)code_mem_address + 0xb, "Eip at 0x%x instead of %p\n", ctx.Eip, (char *)code_mem_address + 0xb); /* here we handle exception */ } } else ok(FALSE, "unexpected stage %x\n", stage); status = pNtSetContextThread(pi.hThread, &ctx); ok(!status, "NtSetContextThread failed with 0x%x\n", status); } } ContinueDebugEvent(de.dwProcessId, de.dwThreadId, continuestatus); } while (de.dwDebugEventCode != EXIT_PROCESS_DEBUG_EVENT); winetest_wait_child_process( pi.hProcess ); ok(CloseHandle(pi.hThread) != 0, "error %u\n", GetLastError()); ok(CloseHandle(pi.hProcess) != 0, "error %u\n", GetLastError()); return; } static DWORD simd_fault_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame, CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher ) { int *stage = *(int **)(frame + 1); got_exception++; if( *stage == 1) { /* fault while executing sse instruction */ context->Eip += 3; /* skip addps */ return ExceptionContinueExecution; } /* stage 2 - divide by zero fault */ if( rec->ExceptionCode == EXCEPTION_ILLEGAL_INSTRUCTION) skip("system doesn't support SIMD exceptions\n"); else { ok( rec->ExceptionCode == STATUS_FLOAT_MULTIPLE_TRAPS, "exception code: %#x, should be %#x\n", rec->ExceptionCode, STATUS_FLOAT_MULTIPLE_TRAPS); ok( rec->NumberParameters == 1, "# of params: %i, should be 1\n", rec->NumberParameters); if( rec->NumberParameters == 1 ) ok( rec->ExceptionInformation[0] == 0, "param #1: %lx, should be 0\n", rec->ExceptionInformation[0]); } context->Eip += 3; /* skip divps */ return ExceptionContinueExecution; } static const BYTE simd_exception_test[] = { 0x83, 0xec, 0x4, /* sub $0x4, %esp */ 0x0f, 0xae, 0x1c, 0x24, /* stmxcsr (%esp) */ 0x66, 0x81, 0x24, 0x24, 0xff, 0xfd, /* andw $0xfdff,(%esp) * enable divide by */ 0x0f, 0xae, 0x14, 0x24, /* ldmxcsr (%esp) * zero exceptions */ 0x6a, 0x01, /* push $0x1 */ 0x6a, 0x01, /* push $0x1 */ 0x6a, 0x01, /* push $0x1 */ 0x6a, 0x01, /* push $0x1 */ 0x0f, 0x10, 0x0c, 0x24, /* movups (%esp),%xmm1 * fill dividend */ 0x0f, 0x57, 0xc0, /* xorps %xmm0,%xmm0 * clear divisor */ 0x0f, 0x5e, 0xc8, /* divps %xmm0,%xmm1 * generate fault */ 0x83, 0xc4, 0x10, /* add $0x10,%esp */ 0x66, 0x81, 0x0c, 0x24, 0x00, 0x02, /* orw $0x200,(%esp) * disable exceptions */ 0x0f, 0xae, 0x14, 0x24, /* ldmxcsr (%esp) */ 0x83, 0xc4, 0x04, /* add $0x4,%esp */ 0xc3, /* ret */ }; static const BYTE sse_check[] = { 0x0f, 0x58, 0xc8, /* addps %xmm0,%xmm1 */ 0xc3, /* ret */ }; static void test_simd_exceptions(void) { int stage; /* test if CPU & OS can do sse */ stage = 1; got_exception = 0; run_exception_test(simd_fault_handler, &stage, sse_check, sizeof(sse_check)); if(got_exception) { skip("system doesn't support SSE\n"); return; } /* generate a SIMD exception */ stage = 2; got_exception = 0; run_exception_test(simd_fault_handler, &stage, simd_exception_test, sizeof(simd_exception_test)); ok( got_exception == 1, "got exception: %i, should be 1\n", got_exception); } #endif /* __i386__ */ START_TEST(exception) { #ifdef __i386__ HMODULE hntdll = GetModuleHandleA("ntdll.dll"); pNtCurrentTeb = (void *)GetProcAddress( hntdll, "NtCurrentTeb" ); pNtGetContextThread = (void *)GetProcAddress( hntdll, "NtGetContextThread" ); pNtSetContextThread = (void *)GetProcAddress( hntdll, "NtSetContextThread" ); pNtReadVirtualMemory = (void *)GetProcAddress( hntdll, "NtReadVirtualMemory" ); pRtlRaiseException = (void *)GetProcAddress( hntdll, "RtlRaiseException" ); pNtTerminateProcess = (void *)GetProcAddress( hntdll, "NtTerminateProcess" ); pRtlAddVectoredExceptionHandler = (void *)GetProcAddress( hntdll, "RtlAddVectoredExceptionHandler" ); pRtlRemoveVectoredExceptionHandler = (void *)GetProcAddress( hntdll, "RtlRemoveVectoredExceptionHandler" ); if (!pNtCurrentTeb) { skip( "NtCurrentTeb not found\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 >= 4) { void *addr; sscanf( my_argv[3], "%p", &addr ); if (addr != &test_stage) { skip( "child process not mapped at same address (%p/%p)\n", &test_stage, addr); return; } /* child must be run under a debugger */ if (!pNtCurrentTeb()->Peb->BeingDebugged) { ok(FALSE, "child process not being debugged?\n"); return; } if (pRtlRaiseException) { test_stage = 1; run_rtlraiseexception_test(0x12345); run_rtlraiseexception_test(EXCEPTION_BREAKPOINT); run_rtlraiseexception_test(EXCEPTION_INVALID_HANDLE); test_stage = 2; 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_rtlraiseexception(); test_debugger(); test_simd_exceptions(); VirtualFree(code_mem, 1024, MEM_RELEASE); #endif }