BOOL memory_get_string_indirect(struct dbg_process* pcs, void* addr, BOOL unicode, char* buffer, int size)
{
void* ad;
SIZE_T sz;
buffer[0] = 0;
if (addr &&
pcs->process_io->read(pcs->handle, addr, &ad, sizeof(ad), &sz) && sz == sizeof(ad) && ad)
{
return memory_get_string(pcs, ad, TRUE, unicode, buffer, size);
}
return FALSE;
}
static unsigned dbg_handle_debug_event(DEBUG_EVENT* de)
{
union {
char bufferA[256];
WCHAR buffer[256];
} u;
DWORD cont = DBG_CONTINUE;
dbg_curr_pid = de->dwProcessId;
dbg_curr_tid = de->dwThreadId;
if ((dbg_curr_process = dbg_get_process(de->dwProcessId)) != NULL)
dbg_curr_thread = dbg_get_thread(dbg_curr_process, de->dwThreadId);
else
dbg_curr_thread = NULL;
switch (de->dwDebugEventCode)
{
case EXCEPTION_DEBUG_EVENT:
if (!dbg_curr_thread)
{
WINE_ERR("%04x:%04x: not a registered process or thread (perhaps a 16 bit one ?)\n",
de->dwProcessId, de->dwThreadId);
break;
}
WINE_TRACE("%04x:%04x: exception code=%08x\n",
de->dwProcessId, de->dwThreadId,
de->u.Exception.ExceptionRecord.ExceptionCode);
if (dbg_curr_process->continue_on_first_exception)
{
dbg_curr_process->continue_on_first_exception = FALSE;
if (!DBG_IVAR(BreakOnAttach)) break;
}
if (dbg_fetch_context())
{
cont = dbg_handle_exception(&de->u.Exception.ExceptionRecord,
de->u.Exception.dwFirstChance);
if (cont && dbg_curr_thread)
{
SetThreadContext(dbg_curr_thread->handle, &dbg_context);
}
}
break;
case CREATE_PROCESS_DEBUG_EVENT:
dbg_curr_process = dbg_add_process(&be_process_active_io, de->dwProcessId,
de->u.CreateProcessInfo.hProcess);
if (dbg_curr_process == NULL)
{
WINE_ERR("Couldn't create process\n");
break;
}
fetch_module_name(de->u.CreateProcessInfo.lpImageName,
de->u.CreateProcessInfo.fUnicode,
de->u.CreateProcessInfo.lpBaseOfImage,
u.buffer, sizeof(u.buffer) / sizeof(WCHAR), TRUE);
WINE_TRACE("%04x:%04x: create process '%s'/%p @%p (%u<%u>)\n",
de->dwProcessId, de->dwThreadId,
wine_dbgstr_w(u.buffer),
de->u.CreateProcessInfo.lpImageName,
de->u.CreateProcessInfo.lpStartAddress,
de->u.CreateProcessInfo.dwDebugInfoFileOffset,
de->u.CreateProcessInfo.nDebugInfoSize);
dbg_set_process_name(dbg_curr_process, u.buffer);
if (!dbg_init(dbg_curr_process->handle, u.buffer, FALSE))
dbg_printf("Couldn't initiate DbgHelp\n");
if (!dbg_load_module(dbg_curr_process->handle, de->u.CreateProcessInfo.hFile, u.buffer,
(DWORD_PTR)de->u.CreateProcessInfo.lpBaseOfImage, 0))
dbg_printf("couldn't load main module (%u)\n", GetLastError());
WINE_TRACE("%04x:%04x: create thread I @%p\n",
de->dwProcessId, de->dwThreadId, de->u.CreateProcessInfo.lpStartAddress);
dbg_curr_thread = dbg_add_thread(dbg_curr_process,
de->dwThreadId,
de->u.CreateProcessInfo.hThread,
de->u.CreateProcessInfo.lpThreadLocalBase);
if (!dbg_curr_thread)
{
WINE_ERR("Couldn't create thread\n");
break;
}
dbg_init_current_process();
dbg_init_current_thread(de->u.CreateProcessInfo.lpStartAddress);
break;
case EXIT_PROCESS_DEBUG_EVENT:
WINE_TRACE("%04x:%04x: exit process (%d)\n",
de->dwProcessId, de->dwThreadId, de->u.ExitProcess.dwExitCode);
if (dbg_curr_process == NULL)
{
WINE_ERR("Unknown process\n");
break;
}
tgt_process_active_close_process(dbg_curr_process, FALSE);
dbg_printf("Process of pid=%04x has terminated\n", de->dwProcessId);
break;
case CREATE_THREAD_DEBUG_EVENT:
WINE_TRACE("%04x:%04x: create thread D @%p\n",
de->dwProcessId, de->dwThreadId, de->u.CreateThread.lpStartAddress);
if (dbg_curr_process == NULL)
{
WINE_ERR("Unknown process\n");
break;
}
if (dbg_get_thread(dbg_curr_process, de->dwThreadId) != NULL)
{
WINE_TRACE("Thread already listed, skipping\n");
break;
}
dbg_curr_thread = dbg_add_thread(dbg_curr_process,
de->dwThreadId,
de->u.CreateThread.hThread,
de->u.CreateThread.lpThreadLocalBase);
if (!dbg_curr_thread)
{
WINE_ERR("Couldn't create thread\n");
break;
}
dbg_init_current_thread(de->u.CreateThread.lpStartAddress);
break;
case EXIT_THREAD_DEBUG_EVENT:
WINE_TRACE("%04x:%04x: exit thread (%d)\n",
de->dwProcessId, de->dwThreadId, de->u.ExitThread.dwExitCode);
if (dbg_curr_thread == NULL)
{
WINE_ERR("Unknown thread\n");
break;
}
/* FIXME: remove break point set on thread startup */
dbg_del_thread(dbg_curr_thread);
break;
case LOAD_DLL_DEBUG_EVENT:
if (dbg_curr_thread == NULL)
{
WINE_ERR("Unknown thread\n");
break;
}
fetch_module_name(de->u.LoadDll.lpImageName,
de->u.LoadDll.fUnicode,
de->u.LoadDll.lpBaseOfDll,
u.buffer, sizeof(u.buffer) / sizeof(WCHAR), FALSE);
WINE_TRACE("%04x:%04x: loads DLL %s @%p (%u<%u>)\n",
de->dwProcessId, de->dwThreadId,
wine_dbgstr_w(u.buffer), de->u.LoadDll.lpBaseOfDll,
de->u.LoadDll.dwDebugInfoFileOffset,
de->u.LoadDll.nDebugInfoSize);
dbg_load_module(dbg_curr_process->handle, de->u.LoadDll.hFile, u.buffer,
(DWORD_PTR)de->u.LoadDll.lpBaseOfDll, 0);
break_set_xpoints(FALSE);
break_check_delayed_bp();
break_set_xpoints(TRUE);
if (DBG_IVAR(BreakOnDllLoad))
{
dbg_printf("Stopping on DLL %s loading at 0x%08lx\n",
dbg_W2A(u.buffer, -1), (unsigned long)de->u.LoadDll.lpBaseOfDll);
if (dbg_fetch_context()) cont = 0;
}
break;
case UNLOAD_DLL_DEBUG_EVENT:
WINE_TRACE("%04x:%04x: unload DLL @%p\n",
de->dwProcessId, de->dwThreadId,
de->u.UnloadDll.lpBaseOfDll);
break_delete_xpoints_from_module((unsigned long)de->u.UnloadDll.lpBaseOfDll);
SymUnloadModule(dbg_curr_process->handle,
(unsigned long)de->u.UnloadDll.lpBaseOfDll);
break;
case OUTPUT_DEBUG_STRING_EVENT:
if (dbg_curr_thread == NULL)
{
WINE_ERR("Unknown thread\n");
break;
}
memory_get_string(dbg_curr_process,
de->u.DebugString.lpDebugStringData, TRUE,
de->u.DebugString.fUnicode, u.bufferA, sizeof(u.bufferA));
WINE_TRACE("%04x:%04x: output debug string (%s)\n",
de->dwProcessId, de->dwThreadId, u.bufferA);
break;
case RIP_EVENT:
WINE_TRACE("%04x:%04x: rip error=%u type=%u\n",
de->dwProcessId, de->dwThreadId, de->u.RipInfo.dwError,
de->u.RipInfo.dwType);
break;
default:
WINE_TRACE("%04x:%04x: unknown event (%x)\n",
de->dwProcessId, de->dwThreadId, de->dwDebugEventCode);
}
if (!cont) return TRUE; /* stop execution */
ContinueDebugEvent(de->dwProcessId, de->dwThreadId, cont);
return FALSE; /* continue execution */
}
static DWORD dbg_handle_exception(const EXCEPTION_RECORD* rec, BOOL first_chance)
{
BOOL is_debug = FALSE;
THREADNAME_INFO* pThreadName;
struct dbg_thread* pThread;
assert(dbg_curr_thread);
WINE_TRACE("exception=%x first_chance=%c\n",
rec->ExceptionCode, first_chance ? 'Y' : 'N');
switch (rec->ExceptionCode)
{
case EXCEPTION_BREAKPOINT:
case EXCEPTION_SINGLE_STEP:
is_debug = TRUE;
break;
case EXCEPTION_NAME_THREAD:
pThreadName = (THREADNAME_INFO*)(rec->ExceptionInformation);
if (pThreadName->dwThreadID == -1)
pThread = dbg_curr_thread;
else
pThread = dbg_get_thread(dbg_curr_process, pThreadName->dwThreadID);
if(!pThread)
{
dbg_printf("Thread ID=%04x not in our list of threads -> can't rename\n", pThreadName->dwThreadID);
return DBG_CONTINUE;
}
if (dbg_read_memory(pThreadName->szName, pThread->name, 9))
dbg_printf("Thread ID=%04x renamed using MS VC6 extension (name==\"%s\")\n",
pThread->tid, pThread->name);
return DBG_CONTINUE;
}
if (first_chance && !is_debug && !DBG_IVAR(BreakOnFirstChance) &&
!(rec->ExceptionFlags & EH_STACK_INVALID))
{
/* pass exception to program except for debug exceptions */
return DBG_EXCEPTION_NOT_HANDLED;
}
if (!is_debug)
{
/* print some infos */
dbg_printf("%s: ",
first_chance ? "First chance exception" : "Unhandled exception");
switch (rec->ExceptionCode)
{
case EXCEPTION_INT_DIVIDE_BY_ZERO:
dbg_printf("divide by zero");
break;
case EXCEPTION_INT_OVERFLOW:
dbg_printf("overflow");
break;
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
dbg_printf("array bounds");
break;
case EXCEPTION_ILLEGAL_INSTRUCTION:
dbg_printf("illegal instruction");
break;
case EXCEPTION_STACK_OVERFLOW:
dbg_printf("stack overflow");
break;
case EXCEPTION_PRIV_INSTRUCTION:
dbg_printf("privileged instruction");
break;
case EXCEPTION_ACCESS_VIOLATION:
if (rec->NumberParameters == 2)
dbg_printf("page fault on %s access to 0x%08lx",
rec->ExceptionInformation[0] == EXCEPTION_WRITE_FAULT ? "write" :
rec->ExceptionInformation[0] == EXCEPTION_EXECUTE_FAULT ? "execute" : "read",
rec->ExceptionInformation[1]);
else
dbg_printf("page fault");
break;
case EXCEPTION_DATATYPE_MISALIGNMENT:
dbg_printf("Alignment");
break;
case DBG_CONTROL_C:
dbg_printf("^C");
break;
case CONTROL_C_EXIT:
dbg_printf("^C");
break;
case STATUS_POSSIBLE_DEADLOCK:
{
ADDRESS64 addr;
addr.Mode = AddrModeFlat;
addr.Offset = rec->ExceptionInformation[0];
dbg_printf("wait failed on critical section ");
print_address(&addr, FALSE);
}
if (!DBG_IVAR(BreakOnCritSectTimeOut))
{
dbg_printf("\n");
return DBG_EXCEPTION_NOT_HANDLED;
}
break;
case EXCEPTION_WINE_STUB:
{
char dll[32], name[64];
memory_get_string(dbg_curr_process,
(void*)rec->ExceptionInformation[0], TRUE, FALSE,
dll, sizeof(dll));
if (HIWORD(rec->ExceptionInformation[1]))
memory_get_string(dbg_curr_process,
(void*)rec->ExceptionInformation[1], TRUE, FALSE,
name, sizeof(name));
else
sprintf( name, "%ld", rec->ExceptionInformation[1] );
dbg_printf("unimplemented function %s.%s called", dll, name);
}
break;
case EXCEPTION_WINE_ASSERTION:
dbg_printf("assertion failed");
break;
case EXCEPTION_VM86_INTx:
dbg_printf("interrupt %02lx in vm86 mode", rec->ExceptionInformation[0]);
break;
case EXCEPTION_VM86_STI:
dbg_printf("sti in vm86 mode");
break;
case EXCEPTION_VM86_PICRETURN:
dbg_printf("PIC return in vm86 mode");
break;
case EXCEPTION_FLT_DENORMAL_OPERAND:
dbg_printf("denormal float operand");
break;
case EXCEPTION_FLT_DIVIDE_BY_ZERO:
dbg_printf("divide by zero");
break;
case EXCEPTION_FLT_INEXACT_RESULT:
dbg_printf("inexact float result");
break;
case EXCEPTION_FLT_INVALID_OPERATION:
dbg_printf("invalid float operation");
break;
case EXCEPTION_FLT_OVERFLOW:
dbg_printf("floating point overflow");
break;
case EXCEPTION_FLT_UNDERFLOW:
dbg_printf("floating point underflow");
break;
case EXCEPTION_FLT_STACK_CHECK:
dbg_printf("floating point stack check");
break;
case CXX_EXCEPTION:
if(rec->NumberParameters == 3 && rec->ExceptionInformation[0] == CXX_FRAME_MAGIC)
dbg_printf("C++ exception(object = 0x%08lx, type = 0x%08lx)",
rec->ExceptionInformation[1], rec->ExceptionInformation[2]);
else
dbg_printf("C++ exception with strange parameter count %d or magic 0x%08lx",
rec->NumberParameters, rec->ExceptionInformation[0]);
break;
default:
dbg_printf("0x%08x", rec->ExceptionCode);
break;
}
}
if( (rec->ExceptionFlags & EH_STACK_INVALID) ) {
dbg_printf( ", invalid program stack" );
}
if (dbg_exception_prolog(is_debug, first_chance, rec))
{
dbg_interactiveP = TRUE;
return 0;
}
dbg_exception_epilog();
return DBG_CONTINUE;
}
static void print_typed_basic(const struct dbg_lvalue* lvalue)
{
LONGLONG val_int;
void* val_ptr;
long double val_real;
DWORD64 size64;
DWORD tag, size, count, bt;
struct dbg_type type = lvalue->type;
struct dbg_type sub_type;
if (!types_get_real_type(&type, &tag)) return;
switch (tag)
{
case SymTagBaseType:
if (!types_get_info(&type, TI_GET_LENGTH, &size64) ||
!types_get_info(&type, TI_GET_BASETYPE, &bt))
{
WINE_ERR("Couldn't get information\n");
RaiseException(DEBUG_STATUS_INTERNAL_ERROR, 0, 0, NULL);
}
size = (DWORD)size64;
switch (bt)
{
case btInt:
if (!be_cpu->fetch_integer(lvalue, size, TRUE, &val_int)) return;
dbg_printf("%lld", val_int);
break;
case btUInt:
if (!be_cpu->fetch_integer(lvalue, size, FALSE, &val_int)) return;
dbg_printf("%llu", val_int);
break;
case btFloat:
if (!be_cpu->fetch_float(lvalue, size, &val_real)) return;
dbg_printf("%Lf", val_real);
break;
case btChar:
if (!be_cpu->fetch_integer(lvalue, size, TRUE, &val_int)) return;
/* FIXME: should do the same for a Unicode character (size == 2) */
if (size == 1 && (val_int < 0x20 || val_int > 0x80))
dbg_printf("%d", (int)val_int);
else
dbg_printf("'%c'", (char)val_int);
break;
default:
WINE_FIXME("Unsupported basetype %lu\n", bt);
break;
}
break;
case SymTagPointerType:
if (!memory_read_value(lvalue, sizeof(void*), &val_ptr)) return;
sub_type.module = lvalue->type.module;
if (!types_get_info(&type, TI_GET_TYPE, &sub_type.id) ||
sub_type.id == dbg_itype_none)
{
dbg_printf("Internal symbol error: unable to access memory location %p", val_ptr);
break;
}
if (!types_get_real_type(&sub_type, &tag)) return;
if (types_get_info(&sub_type, TI_GET_SYMTAG, &tag) && tag == SymTagBaseType &&
types_get_info(&sub_type, TI_GET_BASETYPE, &bt) && bt == btChar &&
types_get_info(&sub_type, TI_GET_LENGTH, &size64))
{
char buffer[1024];
if (!val_ptr) dbg_printf("0x0");
else if (memory_get_string(dbg_curr_process, val_ptr,
lvalue->cookie == DLV_TARGET,
size64 == 2, buffer, sizeof(buffer)))
dbg_printf("\"%s\"", buffer);
else
dbg_printf("*** invalid address %p ***", val_ptr);
}
else dbg_printf("%p", val_ptr);
break;
case SymTagArrayType:
case SymTagUDT:
assert(lvalue->cookie == DLV_TARGET);
if (!memory_read_value(lvalue, sizeof(val_ptr), &val_ptr)) return;
dbg_printf("%p", val_ptr);
break;
case SymTagEnum:
{
BOOL ok = FALSE;
assert(lvalue->cookie == DLV_TARGET);
/* FIXME: it depends on underlying type for enums
* (not supported yet in dbghelp)
* Assuming 4 as for an int
*/
if (!be_cpu->fetch_integer(lvalue, 4, TRUE, &val_int)) return;
if (types_get_info(&type, TI_GET_CHILDRENCOUNT, &count))
{
char buffer[sizeof(TI_FINDCHILDREN_PARAMS) + 256 * sizeof(DWORD)];
TI_FINDCHILDREN_PARAMS* fcp = (TI_FINDCHILDREN_PARAMS*)buffer;
WCHAR* ptr;
char tmp[256];
VARIANT variant;
int i;
fcp->Start = 0;
while (count)
{
fcp->Count = min(count, 256);
if (types_get_info(&type, TI_FINDCHILDREN, fcp))
{
sub_type.module = type.module;
for (i = 0; i < min(fcp->Count, count); i++)
{
sub_type.id = fcp->ChildId[i];
if (!types_get_info(&sub_type, TI_GET_VALUE, &variant))
continue;
switch (variant.n1.n2.vt)
{
case VT_I4: ok = (val_int == variant.n1.n2.n3.lVal); break;
default: WINE_FIXME("Unsupported variant type (%u)\n", variant.n1.n2.vt);
}
if (ok)
{
ptr = NULL;
types_get_info(&sub_type, TI_GET_SYMNAME, &ptr);
if (!ptr) continue;
WideCharToMultiByte(CP_ACP, 0, ptr, -1, tmp, sizeof(tmp), NULL, NULL);
HeapFree(GetProcessHeap(), 0, ptr);
dbg_printf("%s", tmp);
count = 0; /* so that we'll get away from outter loop */
break;
}
}
}
}
count -= min(count, 256);
fcp->Start += 256;
}
if (!ok) dbg_printf("%lld", val_int);
}
break;
default:
WINE_FIXME("Unsupported tag %lu\n", tag);
break;
}
}
/***********************************************************************
* memory_examine
*
* Implementation of the 'x' command.
*/
void memory_examine(const struct dbg_lvalue *lvalue, int count, char format)
{
int i;
char buffer[256];
ADDRESS64 addr;
void *linear;
types_extract_as_address(lvalue, &addr);
linear = memory_to_linear_addr(&addr);
if (format != 'i' && count > 1)
{
print_address(&addr, FALSE);
dbg_printf(": ");
}
switch (format)
{
case 'u':
if (count == 1) count = 256;
memory_get_string(dbg_curr_process, linear,
TRUE, TRUE, buffer, min(count, sizeof(buffer)));
dbg_printf("%s\n", buffer);
return;
case 's':
if (count == 1) count = 256;
memory_get_string(dbg_curr_process, linear,
TRUE, FALSE, buffer, min(count, sizeof(buffer)));
dbg_printf("%s\n", buffer);
return;
case 'i':
while (count-- && memory_disasm_one_insn(&addr));
return;
case 'g':
while (count--)
{
GUID guid;
if (!dbg_read_memory(linear, &guid, sizeof(guid)))
{
memory_report_invalid_addr(linear);
break;
}
dbg_printf("{%08lx-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}\n",
guid.Data1, guid.Data2, guid.Data3,
guid.Data4[0], guid.Data4[1], guid.Data4[2], guid.Data4[3],
guid.Data4[4], guid.Data4[5], guid.Data4[6], guid.Data4[7]);
linear = (char*)linear + sizeof(guid);
addr.Offset += sizeof(guid);
if (count)
{
print_address(&addr, FALSE);
dbg_printf(": ");
}
}
return;
#define DO_DUMP2(_t,_l,_f,_vv) { \
_t _v; \
for (i = 0; i < count; i++) { \
if (!dbg_read_memory(linear, &_v, sizeof(_t))) \
{ memory_report_invalid_addr(linear); break; } \
dbg_printf(_f, (_vv)); \
addr.Offset += sizeof(_t); \
linear = (char*)linear + sizeof(_t); \
if ((i % (_l)) == (_l) - 1 && i != count - 1) \
{ \
dbg_printf("\n"); \
print_address(&addr, FALSE); \
dbg_printf(": "); \
} \
} \
dbg_printf("\n"); \
} \
return
#define DO_DUMP(_t,_l,_f) DO_DUMP2(_t,_l,_f,_v)
case 'x': DO_DUMP(int, 4, " %8.8x");
case 'd': DO_DUMP(unsigned int, 4, " %10d");
case 'w': DO_DUMP(unsigned short, 8, " %04x");
case 'c': DO_DUMP2(char, 32, " %c", (_v < 0x20) ? ' ' : _v);
case 'b': DO_DUMP2(char, 16, " %02x", (_v) & 0xff);
}
}
