TBool ELFFile::GetExceptionIndexInfo(TUint32 &aOffset)
{
const TText * aBase = (TText *)".ARM.exidx$$Base";
const TText * aLimit = (TText *)".ARM.exidx$$Limit";
Elf32_Sym * exidxBase = FindSymbol(aBase);
Elf32_Sym * exidxLimit = FindSymbol(aLimit);
if (exidxBase && exidxLimit && (exidxLimit->st_value - exidxBase->st_value))
{
const TText * aExceptionDescriptor = (TText *)"Symbian$$CPP$$Exception$$Descriptor";
Elf32_Sym * aED = FindSymbol(aExceptionDescriptor);
if (aED)
{
// Set bottom bit so 0 in header slot means an old binary.
// The decriptor is always aligned on a 4 byte boundary.
aOffset = (aED->st_value - iLinkedBase) | 0x00000001;
return ETrue;
}
else
{
Print(EPeError,"Executable has exception table but no exception descriptor\n");
exit(666);
}
}
return EFalse;
}
void Load_FunctionProc ()
{
CFragConnectionID connectionID;
Ptr mainAddress;
Str255 errorString;
OSErr anErr;
if (nil == tCallUniversalProcProcPtr) /* if it's not defined yet */
{
/* Resolve the symbol against InterfaceLib. */
anErr = GetSharedLibrary("\pInterfaceLib",kPowerPCCFragArch, kFindCFrag, &connectionID, &mainAddress, errorString);
if (noErr == anErr)
{
CFragSymbolClass symbolClass;
anErr = FindSymbol(connectionID, "\pCallUniversalProc",
(Ptr *) &tCallUniversalProcProcPtr,&symbolClass);
if (noErr != anErr)
tCallUniversalProcProcPtr = nil;
anErr = FindSymbol(connectionID,"\pNewRoutineDescriptor",
(Ptr *) &tNewRoutineDescriptorProcPtr,&symbolClass);
if (noErr != anErr)
tNewRoutineDescriptorProcPtr = nil;
anErr = FindSymbol(connectionID,"\pDisposeRoutineDescriptor",
(Ptr *)&tDisposeRoutineDescriptorProcPtr,&symbolClass);
if (noErr != anErr)
tDisposeRoutineDescriptorProcPtr = nil;
}
}
void HandleTranslationUnit(ASTContext &Context) override {
const SourceManager &SourceMgr = Context.getSourceManager();
for (unsigned Offset : SymbolOffsets) {
if (!FindSymbol(Context, SourceMgr, Offset, ""))
return;
}
for (const std::string &QualifiedName : QualifiedNames) {
if (!FindSymbol(Context, SourceMgr, 0, QualifiedName))
return;
}
}
//---------------------------------------------------------------------------
// FindSymbol
//
// This function looks for a symbol in the symbol tree, and returns a pointer
// to the node if found.
//
// RETURNS: Pointer if found, NULL if not found
//---------------------------------------------------------------------------
SYMNODE * NEAR FindSymbol (SYMNODE *pTree, LPSTR szSym)
{
register INT i;
if (pTree)
{
i = _fstricmp (pTree->szSym, szSym);
if (!i)
return (pTree);
if (i < 0)
return (FindSymbol (pTree->left, szSym));
return (FindSymbol (pTree->right, szSym));
}
return (NULL);
}
/*******************************************************************************
NAME : PPDefmessageHandlerCommand
DESCRIPTION : Displays the pretty-print form (if any) for a handler
INPUTS : None
RETURNS : Nothing useful
SIDE EFFECTS : None
NOTES : H/L Syntax: (ppdefmessage-handler <class> <message> [<type>])
*******************************************************************************/
globle void PPDefmessageHandlerCommand()
{
DATA_OBJECT temp;
SYMBOL_HN *csym,*msym;
char *tname;
DEFCLASS *cls = NULL;
int mtype;
HANDLER *hnd;
if (ArgTypeCheck("ppdefmessage-handler",1,SYMBOL,&temp) == FALSE)
return;
csym = FindSymbol(DOToString(temp));
if (ArgTypeCheck("ppdefmessage-handler",2,SYMBOL,&temp) == FALSE)
return;
msym = FindSymbol(DOToString(temp));
if (RtnArgCount() == 3)
{
if (ArgTypeCheck("ppdefmessage-handler",3,SYMBOL,&temp) == FALSE)
return;
tname = DOToString(temp);
}
else
tname = hndquals[MPRIMARY];
mtype = HandlerType("ppdefmessage-handler",tname);
if (mtype == MERROR)
{
SetEvaluationError(TRUE);
return;
}
if (csym != NULL)
cls = LookupDefclassByMdlOrScope(ValueToString(csym));
if (((cls == NULL) || (msym == NULL)) ? TRUE :
((hnd = FindHandlerByAddress(cls,msym,(unsigned) mtype)) == NULL))
{
PrintErrorID("MSGCOM",2,FALSE);
PrintRouter(WERROR,"Unable to find message-handler ");
PrintRouter(WERROR,ValueToString(msym));
PrintRouter(WERROR," ");
PrintRouter(WERROR,tname);
PrintRouter(WERROR," for class ");
PrintRouter(WERROR,ValueToString(csym));
PrintRouter(WERROR," in function ppdefmessage-handler.\n");
SetEvaluationError(TRUE);
return;
}
if (hnd->ppForm != NULL)
PrintInChunks(WDISPLAY,hnd->ppForm);
}
static char *NewSymbol(char *string)
{
SymbolPtr symbol;
// Look for string in the list of symbols.
symbol = FindSymbol(string, 0);
// Add the new symbol.
if (symbol == 0) {
symbol = AllocateBootXMemory(sizeof(Symbol) + strlen(string));
if (symbol == 0) return 0;
// Set the symbol's data.
symbol->refCount = 0;
strcpy(symbol->string, string);
// Add the symbol to the list.
symbol->next = gSymbolsHead;
gSymbolsHead = symbol;
}
// Update the refCount and return the string.
symbol->refCount++;
return symbol->string;
}
//-----------------------------------------------------------------------------
void *DynamicLibrary::getProcAddress( const char *function )
{
OSErr err = noErr;
void *fnAddress = NULL;
#if defined(TORQUE_OS_MAC_CARB)
if (platState.osX)
{
CFStringRef str = CFStringCreateWithCString(NULL, function, kCFStringEncodingMacRoman);
fnAddress = CFBundleGetFunctionPointerForName( (CFBundleRef)hInst, str );
if (fnAddress == NULL)
err = cfragNoSymbolErr;
CFRelease(str);
}
else
#endif
{
err = FindSymbol((CFragConnectionID)hInst, str2p(function), (char**)&fnAddress, NULL);
}
if (!fnAddress) {
if (mErrorReport)
Con::errorf("DynamicLibrary: function '%s' not found!", function);
mError = true;
}
return fnAddress;
}
/*********************************************************
NAME : SlotInfoSlot
DESCRIPTION : Runtime support routine for slot-sources,
slot-facets, et. al. which looks up
a slot
INPUTS : 1) Data object buffer
2) Class pointer
3) Name-string of slot to find
4) The name of the calling function
RETURNS : Nothing useful
SIDE EFFECTS : Support function called and data object
buffer initialized
NOTES : None
*********************************************************/
static SLOT_DESC *SlotInfoSlot(
DATA_OBJECT *result,
DEFCLASS *cls,
char *sname,
char *fnxname)
{
SYMBOL_HN *ssym;
int i;
if ((ssym = FindSymbol(sname)) == NULL)
{
SetEvaluationError(TRUE);
SetMultifieldErrorValue(result);
return(NULL);
}
i = FindInstanceTemplateSlot(cls,ssym);
if (i == -1)
{
SlotExistError(sname,fnxname);
SetEvaluationError(TRUE);
SetMultifieldErrorValue(result);
return(NULL);
}
result->type = MULTIFIELD;
result->begin = 0;
return(cls->instanceTemplate[i]);
}
bool IsWtk( instruction * curr_ins )
//=================================
{
operand * op = &curr_ins->op[ curr_ins->mem_ref_op ];
char * sym = FindSymbol( InsAddr + op->offset );
bool retn = false;
if( /* Pass == 2 && so that didAnyWtk can be set */
( Options & FORM_DO_WTK ) ) {
if( strstr( sym, WTLBASEStr ) != NULL ) {
fixup * fix = FindFixup( InsAddr + op->offset, Segment );
if( fix != NULL ) {
WtkAddr = fix->imp_address + ( fix->seg_address << 4 );
retn = true;
}
} else if( WtlsegPresent && ( curr_ins->pref & PREF_FS ) &&
curr_ins->seg_used == FS_REG && sym == NULL ) {
WtkAddr = op->disp;
retn = true;
}
}
if( retn ) {
didAnyWtk = true;
}
if( Pass == 2 ) {
return( retn );
} else {
return( false );
}
}
CHAR8* NewSymbol(CHAR8* string)
{
SymbolPtr lastGuy = 0;
SymbolPtr symbol;
// Look for string in the list of symbols.
symbol = FindSymbol(string, 0);
// Add the new symbol.
if (symbol == NULL)
{
symbol = (SymbolPtr)AllocateZeroPool(sizeof(Symbol) + 1 + AsciiStrLen(string));
if (symbol == NULL)
return NULL;
// Set the symbol's data.
symbol->refCount = 0;
AsciiStrCpy(symbol->string, string);
// Add the symbol to the list.
symbol->next = gSymbolsHead;
gSymbolsHead = symbol;
}
// Update the refCount and return the string.
symbol->refCount++;
if (lastGuy && lastGuy->next != 0)
return NULL;
return symbol->string;
}
int CInterpreter::GetTag( CBlock *block )
{
char typeName[MAX_STRING_SIZE];
int typeID;
//Mark as a tag
block->Write( ID_TAG, (float) ID_TAG );
if (!Match( TK_OPEN_PARENTHESIS ))
return Error("syntax error : '(' not found");
//Get the tag name
if ( GetString( block ) == false )
return false;
//Get the lookup ID
GetType( (char *) typeName );
typeID = FindSymbol( (char *) typeName, m_typeKeywords);
//Tags only contain origin and angles lookups
if ( (typeID != TYPE_ORIGIN) && (typeID != TYPE_ANGLES) )
{
return Error("syntax error : 'tag' : %s is not a valid look up identifier", typeName );
}
block->Write( TK_FLOAT, (float) typeID );
if (!Match( TK_CLOSED_PARENTHESIS ))
return Error("tag : too many parameters");
return true;
}
//---------------------------------------------------------------------------
// RemoveSymbol
//
// This function looks for a defined symbol, and if found, turns it's flag
// off so that it isn't really defined.
//
// RETURNS: Nothing
//---------------------------------------------------------------------------
VOID NEAR RemoveSymbol (SYMNODE *pRoot, LPSTR szSym)
{
SYMNODE *pTree;
if (pTree = FindSymbol (pRoot, szSym))
pTree->fDef = FALSE;
}
static char *
NewSymbol( char * string )
{
static SymbolPtr lastGuy = 0;
SymbolPtr symbol;
// Look for string in the list of symbols.
symbol = FindSymbol(string, 0);
// Add the new symbol.
if (symbol == 0)
{
symbol = (SymbolPtr)malloc(sizeof(Symbol) + 1 + strlen(string));
if (symbol == 0) //return 0;
stop("NULL symbol!");
// Set the symbol's data.
symbol->refCount = 0;
strcpy(symbol->string, string);
// Add the symbol to the list.
symbol->next = gSymbolsHead;
gSymbolsHead = symbol;
}
// Update the refCount and return the string.
symbol->refCount++;
if (lastGuy && lastGuy->next != 0) stop("last guy not last!");
return symbol->string;
}
/* AddGlobal - add a symbol to a global symbol table */
static Symbol *AddGlobal(ParseContext *c, SymbolTable *table, const char *name, StorageClass storageClass, Type *type, VMUVALUE offset)
{
size_t size = sizeof(Symbol) + strlen(name);
Symbol *sym;
/* check for a duplicate symbol name */
if ((sym = FindSymbol(table, name)) != NULL)
ParseError(c, "duplicate symbol '%s'", name);
/* allocate the symbol structure */
sym = (Symbol *)GlobalAlloc(c, size);
strcpy(sym->name, name);
sym->storageClass = storageClass;
sym->section = NULL;
sym->type = type;
sym->v.variable.offset = offset;
sym->v.variable.fixups = 0;
sym->next = NULL;
/* add it to the symbol table */
*table->pTail = sym;
table->pTail = &sym->next;
++table->count;
/* return the symbol */
return sym;
}
int ProcessExpress(char *instring) /*对原表达式进行预处理*/
{
int len,pos;
inlength=-1;
parencount=0;
tokencount=LASTOPERAND;
len=strlen(instring);
instring[len]='\0';
for (pos=0;pos<len;)
{
if (instring[pos]==' ') /*忽略空格字符*/
pos++;
else if (isalpha(instring[pos])) /*处理字母*/
pos=FindWord(instring,pos);
else if (isdigit(instring[pos]) || instring[pos]=='.') /*处理数字*/
pos=FindNumber(instring,pos);
else /*处理符号*/
pos=FindSymbol(instring,pos);
if (pos==-1)
return 0;
}
if (parencount!=0)
printf("左右括号不匹配\n");
PutToken(0); /*在infix中添加ENDEXPR*/
return 1;
}
/* AddLocal - add a symbol to the symbol table */
Symbol *AddLocal(ParseContext *c, const char *name, Type *type, VMUVALUE offset)
{
SymbolTable *table = &c->function->u.functionDefinition.locals;
size_t size = sizeof(Symbol) + strlen(name);
Symbol *sym;
/* check for a duplicate symbol name */
if ((sym = FindSymbol(table, name)) != NULL)
ParseError(c, "duplicate symbol '%s'", name);
/* allocate the symbol structure */
sym = (Symbol *)xbLocalAlloc(c->sys, size);
strcpy(sym->name, name);
sym->storageClass = SC_LOCAL;
sym->section = NULL;
sym->type = type;
sym->v.variable.offset = offset;
sym->next = NULL;
/* add it to the symbol table */
*table->pTail = sym;
table->pTail = &sym->next;
++table->count;
/* return the symbol */
return sym;
}
void *wxDynamicLibrary::DoGetSymbol(const wxString &name, bool *success) const
{
wxCHECK_MSG( IsLoaded(), NULL,
_T("Can't load symbol from unloaded library") );
void *symbol = 0;
wxUnusedVar(symbol);
#if defined(__WXMAC__) && !defined(__DARWIN__)
Ptr symAddress;
CFragSymbolClass symClass;
Str255 symName;
#if TARGET_CARBON
c2pstrcpy( (StringPtr) symName, name.fn_str() );
#else
strcpy( (char *)symName, name.fn_str() );
c2pstr( (char *)symName );
#endif
if( FindSymbol( m_handle, symName, &symAddress, &symClass ) == noErr )
symbol = (void *)symAddress;
#elif defined(__WXPM__) || defined(__EMX__)
DosQueryProcAddr( m_handle, 1L, (PSZ)name.c_str(), (PFN*)symbol );
#else
symbol = RawGetSymbol(m_handle, name);
#endif
if ( success )
*success = symbol != NULL;
return symbol;
}
static void FreeSymbol(char *string)
{
SymbolPtr symbol, prev;
prev = 0;
// Look for string in the list of symbols.
symbol = FindSymbol(string, &prev);
if (symbol == 0) {
return;
}
// Update the refCount.
symbol->refCount--;
if (symbol->refCount != 0) {
return;
}
// Remove the symbol from the list.
if (prev != 0) {
prev->next = symbol->next;
} else {
gSymbolsHead = symbol->next;
}
// Free the symbol's memory.
free(symbol);
}
globle int UndefineFunction(
char *functionName)
{
SYMBOL_HN *findValue;
struct FunctionDefinition *fPtr, *lastPtr = NULL;
findValue = (SYMBOL_HN *) FindSymbol(functionName);
for (fPtr = ListOfFunctions;
fPtr != NULL;
fPtr = fPtr->next)
{
if (fPtr->callFunctionName == findValue)
{
DecrementSymbolCount(fPtr->callFunctionName);
RemoveHashFunction(fPtr);
if (lastPtr == NULL)
{ ListOfFunctions = fPtr->next; }
else
{ lastPtr->next = fPtr->next; }
rtn_struct(FunctionDefinition,fPtr);
return(TRUE);
}
lastPtr = fPtr;
}
return(FALSE);
}
LinkExpression *LinkExpression::Eval(int section, int base, ObjInt offset)
{
if (left)
left = left->Eval(section, base, offset);
if (right)
right = right->Eval(section, base, offset);
LinkExpression *rv = this;
switch(op)
{
case ePC:
delete rv;
rv = new LinkExpression(section, base, offset);
break;
case eSymbol:
{
LinkExpressionSymbol *exp = FindSymbol(symbolName);
if (!exp)
{
LinkManager::LinkError("Variable "+symbolName+" is undefined");
}
else
{
delete rv;
rv = new LinkExpression(*(exp->GetValue()));
}
break;
}
}
return rv;
}
/***************************************************
NAME : Send
DESCRIPTION : C Interface for sending messages to
instances
INPUTS : 1) The data object of the instance
2) The message name-string
3) The message arguments string
(Constants only)
4) Caller's buffer for result
RETURNS : Nothing useful
SIDE EFFECTS : Executes message and stores result
caller's buffer
NOTES : None
***************************************************/
globle void Send(
DATA_OBJECT *idata,
char *msg,
char *args,
DATA_OBJECT *result)
{
int error;
EXPRESSION *iexp;
SYMBOL_HN *msym;
SetEvaluationError(FALSE);
result->type = SYMBOL;
result->value = FalseSymbol;
msym = FindSymbol(msg);
if (msym == NULL)
{
PrintNoHandlerError(msg);
SetEvaluationError(TRUE);
return;
}
iexp = GenConstant(idata->type,idata->value);
iexp->nextArg = ParseConstantArguments(args,&error);
if (error == TRUE)
{
ReturnExpression(iexp);
SetEvaluationError(TRUE);
return;
}
PerformMessage(result,iexp,msym);
ReturnExpression(iexp);
if ((CurrentEvaluationDepth == 0) && (! EvaluatingTopLevelCommand) &&
(CurrentExpression == NULL))
{ PeriodicCleanup(TRUE,FALSE); }
}
void ReportID(char *id)
{
Symbol *sym;
char str[100];
if (sym=FindSymbol(0,id)) FormatSymbol(str,sym);
else strcpy(str,"--- Null Symbol ---");
message(str);
}
VMFunction *PClass::FindFunction(FName clsname, FName funcname)
{
auto cls = PClass::FindClass(clsname);
if (!cls) return nullptr;
auto func = dyn_cast<PFunction>(cls->FindSymbol(funcname, true));
if (!func) return nullptr;
return func->Variants[0].Implementation;
}
//---------------------------------------------------------------------------
// IsDefined
//
// This function determines if the given symbol is defined in the symbol tree
//
// RETURNS: TRUE if symbol defined, FALSE if not
//---------------------------------------------------------------------------
BOOL NEAR IsDefined (SYMNODE *pRoot, LPSTR szSym)
{
SYMNODE *pTree;
if (pTree = FindSymbol (pRoot, szSym))
return (pTree->fDef);
return (FALSE);
}
void PClass::FindFunction(VMFunction **pptr, FName clsname, FName funcname)
{
auto cls = PClass::FindClass(clsname);
if (!cls) return;
auto func = dyn_cast<PFunction>(cls->FindSymbol(funcname, true));
if (!func) return;
*pptr = func->Variants[0].Implementation;
FunctionPtrList.Push(pptr);
}
CPointer* CBinaryFile::FindAddress(object oIdentifier)
{
#ifdef _WIN32
if(CheckClassname(oIdentifier, "bytes"))
return FindSignature(oIdentifier);
#endif
return FindSymbol(extract<char*>(oIdentifier));
}
bool JniInvocation::Init(const char* library) {
#ifdef __ANDROID__
char buffer[PROPERTY_VALUE_MAX];
#else
char* buffer = NULL;
#endif
library = GetLibrary(library, buffer);
handle_ = dlopen(library, RTLD_NOW);
if (handle_ == NULL) {
if (strcmp(library, kLibraryFallback) == 0) {
// Nothing else to try.
ALOGE("Failed to dlopen %s: %s", library, dlerror());
return false;
}
// Note that this is enough to get something like the zygote
// running, we can't property_set here to fix this for the future
// because we are root and not the system user. See
// RuntimeInit.commonInit for where we fix up the property to
// avoid future fallbacks. http://b/11463182
ALOGW("Falling back from %s to %s after dlopen error: %s",
library, kLibraryFallback, dlerror());
library = kLibraryFallback;
handle_ = dlopen(library, RTLD_NOW);
if (handle_ == NULL) {
ALOGE("Failed to dlopen %s: %s", library, dlerror());
return false;
}
}
if (!FindSymbol(reinterpret_cast<void**>(&JNI_GetDefaultJavaVMInitArgs_),
"JNI_GetDefaultJavaVMInitArgs")) {
return false;
}
if (!FindSymbol(reinterpret_cast<void**>(&JNI_CreateJavaVM_),
"JNI_CreateJavaVM")) {
return false;
}
if (!FindSymbol(reinterpret_cast<void**>(&JNI_GetCreatedJavaVMs_),
"JNI_GetCreatedJavaVMs")) {
return false;
}
return true;
}
SReference SExpressionHashPackage::Intern(const char *name)
{
SReference ret = FindSymbol(name);
if(ret.GetPtr() == EmptySlotMark.GetPtr()) {
// Now we create a new symbol
ret = CreateNewSymbolObject(name);
AddItem(name, ret);
}
return ret;
}
bool PassParser::Parse(Lexer* lexer, const boost::filesystem::path& dir)
{
m_rootDir = dir;
Token token = lexer->CurToken();
if(token.type != Token::token_id)
{
Error(token.line, "unexpected token: '" + token.str + "'");
return false;
}
m_name = token.str;
if(FindSymbol(m_name, true) != nullptr)
{
Error(token.line, "object '" + m_name + "' already defined.");
return false;
}
token = lexer->NextToken();
if(token.str != "{")
{
Error(token.line, "unexpected token: '" + token.str + "'");
return false;
}
token = lexer->NextToken();
while(true)
{
if(ParseFunctionCall(lexer) == false)
{
return false;
}
if(lexer->CurToken().str == "}")
{
break;
}
}
token = lexer->NextToken();
if(token.str == ";")
{
lexer->SkipToken(token);
}
return true;
}
OSErr SetData(unsigned long value)
{
OSErr error;
SymClass symClass;
long myCount;
short myIndex;
Str255 myName;
Ptr myAddr;
error = FindSymbol(connID, transportGlobalsName, (char**)&hSer, &symClass); // Find the global
if (error == noErr) { // Found it; make it nil
*hSer = value;
}
return error;
}
