/* */
/* */
/* */
-/* (C) 1998-2003 Ullrich von Bassewitz */
-/* Römerstraße 52 */
-/* D-70794 Filderstadt */
-/* EMail: uz@cc65.org */
+/* (C) 1998-2011, Ullrich von Bassewitz */
+/* Roemerstrasse 52 */
+/* D-70794 Filderstadt */
+/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
#include "addrsize.h"
#include "check.h"
#include "hashstr.h"
+#include "mmodel.h"
+#include "scopedefs.h"
#include "symdefs.h"
#include "xmalloc.h"
#include "objfile.h"
#include "scanner.h"
#include "segment.h"
+#include "sizeof.h"
#include "spool.h"
+#include "studyexpr.h"
#include "symtab.h"
/* Combined symbol entry flags used within this module */
#define SF_UNDEFMASK (SF_REFERENCED | SF_DEFINED | SF_IMPORT)
#define SF_UNDEFVAL (SF_REFERENCED)
-#define SF_EXPMASK (SF_TRAMPOLINE | SF_EXPORT)
-#define SF_EXPVAL (SF_EXPORT)
-#define SF_DBGINFOMASK (SF_TRAMPOLINE | SF_DEFINED | SF_EXPORT | SF_IMPORT)
+#define SF_DBGINFOMASK (SF_UNUSED | SF_DEFINED | SF_IMPORT)
#define SF_DBGINFOVAL (SF_DEFINED)
/* Symbol tables */
-SymTable* CurrentScope = 0; /* Pointer to current symbol table */
-SymTable* RootScope = 0; /* Root symbol table */
+SymTable* CurrentScope = 0; /* Pointer to current symbol table */
+SymTable* RootScope = 0; /* Root symbol table */
+static SymTable* LastScope = 0; /* Pointer to last scope in list */
+static unsigned ScopeCount = 0; /* Number of scopes */
/* Symbol table variables */
-static unsigned ImportCount = 0;/* Counter for import symbols */
-static unsigned ExportCount = 0;/* Counter for export symbols */
+static unsigned ImportCount = 0; /* Counter for import symbols */
+static unsigned ExportCount = 0; /* Counter for export symbols */
-static SymTable* NewSymTable (SymTable* Parent, const char* Name)
+static SymTable* NewSymTable (SymTable* Parent, const StrBuf* Name)
/* Allocate a symbol table on the heap and return it */
{
/* Determine the lexical level and the number of table slots */
S->Left = 0;
S->Right = 0;
S->Childs = 0;
+ S->OwnerSym = 0;
+ S->SegRanges = AUTO_COLLECTION_INITIALIZER;
S->Flags = ST_NONE;
S->AddrSize = ADDR_SIZE_DEFAULT;
- S->Type = 0;
+ S->Type = SCOPETYPE_UNDEF;
S->Level = Level;
S->TableSlots = Slots;
S->TableEntries = 0;
S->Parent = Parent;
- S->Name = GetStringId (Name);
+ S->Name = GetStrBufId (Name);
while (Slots--) {
S->Table[Slots] = 0;
}
+ /* Insert the symbol table into the list of all symbol tables and maintain
+ * a unqiue id for each scope. Count the number of scopes.
+ */
+ S->Next = LastScope;
+ if (RootScope == 0) {
+ S->Id = 0;
+ RootScope = S;
+ } else {
+ S->Id = LastScope->Id + 1;
+ }
+ LastScope = S;
+ ++ScopeCount;
+
/* Insert the symbol table into the child tree of the parent */
if (Parent) {
SymTable* T = Parent->Childs;
} else {
while (1) {
/* Choose next entry */
- int Cmp = strcmp (Name, GetString (T->Name));
+ int Cmp = SB_Compare (Name, GetStrBuf (T->Name));
if (Cmp < 0) {
if (T->Left) {
T = T->Left;
}
} else {
/* Duplicate scope name */
- Internal ("Duplicate scope name: `%s'", Name);
+ Internal ("Duplicate scope name: `%m%p'", Name);
}
}
}
-static int SearchSymTree (SymEntry* T, const char* Name, SymEntry** E)
-/* Search in the given tree for a name. If we find the symbol, the function
- * will return 0 and put the entry pointer into E. If we did not find the
- * symbol, and the tree is empty, E is set to NULL. If the tree is not empty,
- * E will be set to the last entry, and the result of the function is <0 if
- * the entry should be inserted on the left side, and >0 if it should get
- * inserted on the right side.
- */
-{
- /* Is there a tree? */
- if (T == 0) {
- *E = 0;
- return 1;
- }
-
- /* We have a table, search it */
- while (1) {
-
- /* Get the symbol name */
- const char* SymName = GetString (T->Name);
-
- /* Choose next entry */
- int Cmp = strcmp (Name, SymName);
- if (Cmp < 0 && T->Left) {
- T = T->Left;
- } else if (Cmp > 0&& T->Right) {
- T = T->Right;
- } else {
- /* Found or end of search, return the result */
- *E = T;
- return Cmp;
- }
- }
-}
-
-
-
/*****************************************************************************/
-/* Code */
+/* Code */
/*****************************************************************************/
-void SymEnterLevel (const char* ScopeName, unsigned AddrSize)
+void SymEnterLevel (const StrBuf* ScopeName, unsigned char Type,
+ unsigned char AddrSize, SymEntry* OwnerSym)
/* Enter a new lexical level */
{
/* Map a default address size to something real */
* new one if it doesn't exist. If this is the root scope, just create it.
*/
if (CurrentScope) {
+
+ /* Search for the scope, create a new one */
CurrentScope = SymFindScope (CurrentScope, ScopeName, SYM_ALLOC_NEW);
/* Check if the scope has been defined before */
if (CurrentScope->Flags & ST_DEFINED) {
- Error ("Duplicate scope `%s'", ScopeName);
+ Error ("Duplicate scope `%m%p'", ScopeName);
}
+
} else {
CurrentScope = RootScope = NewSymTable (0, ScopeName);
}
- /* Mark the scope as defined */
- CurrentScope->Flags |= ST_DEFINED;
+ /* Mark the scope as defined and set type, address size and owner symbol */
+ CurrentScope->Flags |= ST_DEFINED;
+ CurrentScope->AddrSize = AddrSize;
+ CurrentScope->Type = Type;
+ CurrentScope->OwnerSym = OwnerSym;
+
+ /* If this is a scope that allows to emit data into segments, add segment
+ * ranges for all currently existing segments. Doing this for just a few
+ * scope types is not really necessary but an optimization, because it
+ * does not allocate memory for useless data (unhandled types here don't
+ * occupy space in any segment).
+ */
+ if (CurrentScope->Type <= SCOPETYPE_HAS_DATA) {
+ AddSegRanges (&CurrentScope->SegRanges);
+ }
}
void SymLeaveLevel (void)
/* Leave the current lexical level */
{
+ /* Close the segment ranges. We don't care about the scope type here,
+ * since types without segment ranges will just have an empty list.
+ */
+ CloseSegRanges (&CurrentScope->SegRanges);
+
+ /* If we have segment ranges, the first one is the segment that was
+ * active, when the scope was opened. Set the size of the scope to the
+ * number of data bytes emitted into this segment. If we have an owner
+ * symbol set the size of this symbol, too.
+ */
+ if (CollCount (&CurrentScope->SegRanges) > 0) {
+ const SegRange* R = CollAtUnchecked (&CurrentScope->SegRanges, 0);
+ unsigned long Size = GetSegRangeSize (R);
+ DefSizeOfScope (CurrentScope, Size);
+ if (CurrentScope->OwnerSym) {
+ DefSizeOfSymbol (CurrentScope->OwnerSym, Size);
+ }
+ }
+
+ /* Leave the scope */
CurrentScope = CurrentScope->Parent;
}
-SymTable* SymFindScope (SymTable* Parent, const char* Name, int AllocNew)
+SymTable* SymFindScope (SymTable* Parent, const StrBuf* Name, int AllocNew)
/* Find a scope in the given enclosing scope */
{
SymTable** T = &Parent->Childs;
while (*T) {
- int Cmp = strcmp (Name, GetString ((*T)->Name));
+ int Cmp = SB_Compare (Name, GetStrBuf ((*T)->Name));
if (Cmp < 0) {
T = &(*T)->Left;
} else if (Cmp > 0) {
-SymEntry* SymFind (SymTable* Scope, const char* Name, int AllocNew)
-/* Find a new symbol table entry in the given table. If AllocNew is given and
- * the entry is not found, create a new one. Return the entry found, or the
- * new entry created, or - in case AllocNew is zero - return 0.
+SymTable* SymFindAnyScope (SymTable* Parent, const StrBuf* Name)
+/* Find a scope in the given or any of its parent scopes. The function will
+ * never create a new symbol, since this can only be done in one specific
+ * scope.
+ */
+{
+ SymTable* Scope;
+ do {
+ /* Search in the current table */
+ Scope = SymFindScope (Parent, Name, SYM_FIND_EXISTING);
+ if (Scope == 0) {
+ /* Not found, search in the parent scope, if we have one */
+ Parent = Parent->Parent;
+ }
+ } while (Scope == 0 && Parent != 0);
+
+ return Scope;
+}
+
+
+
+SymEntry* SymFindLocal (SymEntry* Parent, const StrBuf* Name, int AllocNew)
+/* Find a cheap local symbol. If AllocNew is given and the entry is not
+ * found, create a new one. Return the entry found, or the new entry created,
+ * or - in case AllocNew is zero - return 0.
*/
{
SymEntry* S;
int Cmp;
- if (IsLocalName (Name)) {
+ /* Local symbol, get the table */
+ if (!Parent) {
+ /* No last global, so there's no local table */
+ Error ("No preceeding global symbol");
+ if (AllocNew) {
+ return NewSymEntry (Name, SF_LOCAL);
+ } else {
+ return 0;
+ }
+ }
- /* Local symbol, get the table */
- if (!SymLast) {
- /* No last global, so there's no local table */
- Error ("No preceeding global symbol");
- if (AllocNew) {
- return NewSymEntry (Name);
- } else {
- return 0;
- }
- }
+ /* Search for the symbol if we have a table */
+ Cmp = SymSearchTree (Parent->Locals, Name, &S);
- /* Search for the symbol if we have a table */
- Cmp = SearchSymTree (SymLast->Locals, Name, &S);
+ /* If we found an entry, return it */
+ if (Cmp == 0) {
+ return S;
+ }
- /* If we found an entry, return it */
- if (Cmp == 0) {
- return S;
- }
+ if (AllocNew) {
- if (AllocNew) {
+ /* Otherwise create a new entry, insert and return it */
+ SymEntry* N = NewSymEntry (Name, SF_LOCAL);
+ N->Sym.Entry = Parent;
+ if (S == 0) {
+ Parent->Locals = N;
+ } else if (Cmp < 0) {
+ S->Left = N;
+ } else {
+ S->Right = N;
+ }
+ return N;
+ }
- /* Otherwise create a new entry, insert and return it */
- SymEntry* N = NewSymEntry (Name);
- if (S == 0) {
- SymLast->Locals = N;
- } else if (Cmp < 0) {
- S->Left = N;
- } else {
- S->Right = N;
- }
- return N;
- }
+ /* We did not find the entry and AllocNew is false. */
+ return 0;
+}
- } else {
- /* Global symbol: Get the hash value for the name */
- unsigned Hash = HashStr (Name) % Scope->TableSlots;
- /* Search for the entry */
- Cmp = SearchSymTree (Scope->Table[Hash], Name, &S);
+SymEntry* SymFind (SymTable* Scope, const StrBuf* Name, int AllocNew)
+/* Find a new symbol table entry in the given table. If AllocNew is given and
+ * the entry is not found, create a new one. Return the entry found, or the
+ * new entry created, or - in case AllocNew is zero - return 0.
+ */
+{
+ SymEntry* S;
- /* If we found an entry, return it */
- if (Cmp == 0) {
- /* Check for a trampoline entry, in this case return the real
- * symbol.
- */
- while (S->Flags & SF_TRAMPOLINE) {
- S = S->V.Sym;
- }
- return S;
- }
+ /* Global symbol: Get the hash value for the name */
+ unsigned Hash = HashBuf (Name) % Scope->TableSlots;
- if (AllocNew) {
+ /* Search for the entry */
+ int Cmp = SymSearchTree (Scope->Table[Hash], Name, &S);
- /* Otherwise create a new entry, insert and return it */
- SymEntry* N = NewSymEntry (Name);
- if (S == 0) {
- Scope->Table[Hash] = N;
- } else if (Cmp < 0) {
- S->Left = N;
- } else {
- S->Right = N;
- }
- N->SymTab = Scope;
- ++Scope->TableEntries;
- return N;
+ /* If we found an entry, return it */
+ if (Cmp == 0) {
+ return S;
+ }
+
+ if (AllocNew) {
+
+ /* Otherwise create a new entry, insert and return it */
+ SymEntry* N = NewSymEntry (Name, SF_NONE);
+ N->Sym.Tab = Scope;
+ if (S == 0) {
+ Scope->Table[Hash] = N;
+ } else if (Cmp < 0) {
+ S->Left = N;
+ } else {
+ S->Right = N;
+ }
+ ++Scope->TableEntries;
+ return N;
- }
}
/* We did not find the entry and AllocNew is false. */
-static SymEntry* SymFindAny (SymTable* Scope, const char* Name)
+SymEntry* SymFindAny (SymTable* Scope, const StrBuf* Name)
/* Find a symbol in the given or any of its parent scopes. The function will
* never create a new symbol, since this can only be done in one specific
* scope.
do {
/* Search in the current table */
Sym = SymFind (Scope, Name, SYM_FIND_EXISTING);
- if (Sym) {
+ if (Sym) {
/* Found, return it */
- return Sym;
- } else {
- /* Not found, search in the parent scope, if we have one */
- Scope = Scope->Parent;
+ break;
}
- } while (Sym == 0 && Scope != 0);
- /* Not found */
- return 0;
-}
+ /* Not found, search in the parent scope, if we have one */
+ Scope = Scope->Parent;
+ } while (Sym == 0 && Scope != 0);
-
-void SymConDes (const char* Name, unsigned Type, unsigned Prio)
-/* Mark the given symbol as a module constructor/destructor. This will also
- * mark the symbol as an export. Initializers may never be zero page symbols.
- */
-{
- SymEntry* S;
-
- /* Check the parameters */
-#if (CD_TYPE_MIN != 0)
- CHECK (Type >= CD_TYPE_MIN && Type <= CD_TYPE_MAX);
-#else
- CHECK (Type <= CD_TYPE_MAX);
-#endif
- CHECK (Prio >= CD_PRIO_MIN && Prio <= CD_PRIO_MAX);
-
- /* Don't accept local symbols */
- if (IsLocalName (Name)) {
- Error ("Illegal use of a local symbol");
- return;
- }
-
- /* Do we have such a symbol? */
- S = SymFind (CurrentScope, Name, SYM_ALLOC_NEW);
- if (S->Flags & SF_IMPORT) {
- /* The symbol is already marked as imported external symbol */
- Error ("Symbol `%s' is already an import", Name);
- return;
- }
-
- /* If the symbol is marked as global, silently remove the global flag */
- if (S->Flags & SF_GLOBAL) {
- S->Flags &= ~SF_GLOBAL;
- }
-
- /* Check if the symbol was not already defined as ZP symbol */
- if (S->AddrSize == ADDR_SIZE_ZP) {
- Error ("Redeclaration mismatch for symbol `%s'", Name);
- }
-
- /* If the symbol was already declared as a condes, check if the new
- * priority value is the same as the old one.
- */
- if (S->ConDesPrio[Type] != CD_PRIO_NONE) {
- if (S->ConDesPrio[Type] != Prio) {
- Error ("Redeclaration mismatch for symbol `%s'", Name);
- }
- }
- S->ConDesPrio[Type] = Prio;
-
- /* Set the symbol data */
- S->Flags |= SF_EXPORT | SF_REFERENCED;
-}
-
-
-
-int SymIsConst (SymEntry* S)
-/* Return true if the given symbol has a constant value */
-{
- /* Resolve trampoline entries */
- if (S->Flags & SF_TRAMPOLINE) {
- S = S->V.Sym;
- }
-
- /* Check for constness */
- if (S->Flags & SF_CONST) {
- return 1;
- } else if ((S->Flags & SF_DEFINED) && IsConstExpr (S->V.Expr)) {
- /* Constant expression, remember the value */
- ExprNode* Expr = S->V.Expr;
- S->Flags |= SF_CONST;
- S->V.Val = GetExprVal (Expr);
- FreeExpr (Expr);
- return 1;
- }
- return 0;
+ /* Return the result */
+ return Sym;
}
-int SymIsZP (SymEntry* S)
-/* Return true if the symbol is explicitly marked as zeropage symbol */
+unsigned char GetCurrentSymTabType ()
+/* Return the type of the current symbol table */
{
- /* Resolve trampoline entries */
- if (S->Flags & SF_TRAMPOLINE) {
- S = S->V.Sym;
- }
-
- /* If the symbol is not a global symbol, was not defined before, check the
- * enclosing scope for a symbol with the same name, and return the ZP
- * attribute of this symbol if we find one.
- */
- if (!IsLocalNameId (S->Name) && (S->Flags & (SF_DEFINED | SF_IMPORT)) == 0 &&
- S->SymTab->Parent != 0) {
-
- /* Try to find a symbol with the same name in the enclosing scope */
- SymEntry* E = SymFindAny (S->SymTab->Parent, GetString (S->Name));
-
- /* If we found one, use the ZP flag */
- if (E && E->AddrSize == ADDR_SIZE_ZP) {
- S->AddrSize = ADDR_SIZE_ZP;
- }
- }
-
- /* Check the ZP flag */
- return (S->AddrSize == ADDR_SIZE_ZP);
+ CHECK (CurrentScope != 0);
+ return CurrentScope->Type;
}
* AutoImport flag is not set, it's an error.
*/
SymEntry* Sym = 0;
- if (S->SymTab) {
- /* It's a global symbol, get the higher level table */
- SymTable* Tab = S->SymTab->Parent;
- while (Tab) {
- Sym = SymFindAny (Tab, GetString (S->Name));
- if (Sym) {
- if (Sym->Flags & (SF_DEFINED | SF_IMPORT)) {
- /* We've found a symbol in a higher level that is
- * either defined in the source, or an import.
- */
- break;
- } else {
- /* The symbol found is undefined itself. Look further */
- Tab = Sym->SymTab->Parent;
- }
- } else {
- /* No symbol found */
- break;
- }
- }
+ SymTable* Tab = GetSymParentScope (S);
+ while (Tab) {
+ Sym = SymFind (Tab, GetStrBuf (S->Name), SYM_FIND_EXISTING);
+ if (Sym && (Sym->Flags & (SF_DEFINED | SF_IMPORT)) != 0) {
+ /* We've found a symbol in a higher level that is
+ * either defined in the source, or an import.
+ */
+ break;
+ }
+ /* No matching symbol found in this level. Look further */
+ Tab = Tab->Parent;
}
+
if (Sym) {
- /* We found the symbol in a higher level. Make S a trampoline
- * symbol. Beware: We have to transfer the symbol attributes to
- * the real symbol and check for any conflicts.
- */
- S->Flags |= SF_TRAMPOLINE;
- S->V.Sym = Sym;
- /* Transfer the flags. Note: S may not be imported, since in that
- * case it wouldn't be undefined.
- */
- if (S->Flags & SF_EXPORT) {
+ /* We found the symbol in a higher level. Transfer the flags and
+ * address size from the local symbol to that in the higher level
+ * and check for problems.
+ */
+ if (S->Flags & SF_EXPORT) {
if (Sym->Flags & SF_IMPORT) {
- /* The symbol is already marked as imported external symbol */
- PError (&S->Pos, "Symbol `%s' is already an import", GetString (S->Name));
+ /* The symbol is already marked as import */
+ LIError (&S->LineInfos,
+ "Symbol `%s' is already an import",
+ GetString (Sym->Name));
}
- Sym->Flags |= (S->Flags & SF_EXPORT);
- Sym->ExportSize = S->ExportSize;
- }
+ if (Sym->Flags & SF_EXPORT) {
+ /* The symbol is already marked as an export. */
+ if (Sym->AddrSize > S->ExportSize) {
+ /* We're exporting a symbol smaller than it actually is */
+ LIWarning (&S->LineInfos, 1,
+ "Symbol `%m%p' is %s but exported %s",
+ GetSymName (Sym),
+ AddrSizeToStr (Sym->AddrSize),
+ AddrSizeToStr (S->ExportSize));
+ }
+ } else {
+ /* Mark the symbol as an export */
+ Sym->Flags |= SF_EXPORT;
+ Sym->ExportSize = S->ExportSize;
+ if (Sym->ExportSize == ADDR_SIZE_DEFAULT) {
+ /* Use the actual size of the symbol */
+ Sym->ExportSize = Sym->AddrSize;
+ }
+ if (Sym->AddrSize > Sym->ExportSize) {
+ /* We're exporting a symbol smaller than it actually is */
+ LIWarning (&S->LineInfos, 1,
+ "Symbol `%m%p' is %s but exported %s",
+ GetSymName (Sym),
+ AddrSizeToStr (Sym->AddrSize),
+ AddrSizeToStr (Sym->ExportSize));
+ }
+ }
+ }
+ Sym->Flags |= (S->Flags & SF_REFERENCED);
- /* Transfer the referenced flag */
- Sym->Flags |= (S->Flags & SF_REFERENCED);
+ /* Transfer all expression references */
+ SymTransferExprRefs (S, Sym);
+
+ /* Mark the symbol as unused removing all other flags */
+ S->Flags = SF_UNUSED;
} else {
/* The symbol is definitely undefined */
if (S->Flags & SF_EXPORT) {
/* We will not auto-import an export */
- PError (&S->Pos, "Exported symbol `%s' was never defined",
- GetString (S->Name));
+ LIError (&S->LineInfos,
+ "Exported symbol `%m%p' was never defined",
+ GetSymName (S));
} else {
if (AutoImport) {
- /* Mark as import, will be indexed later */
- S->Flags |= SF_IMPORT;
+ /* Mark as import, will be indexed later */
+ S->Flags |= SF_IMPORT;
+ /* Use the address size for code */
+ S->AddrSize = CodeAddrSize;
} else {
- /* Error */
- PError (&S->Pos, "Symbol `%s' is undefined", GetString (S->Name));
+ /* Error */
+ LIError (&S->LineInfos,
+ "Symbol `%m%p' is undefined",
+ GetSymName (S));
}
}
}
* already defined, otherwise mark it as import.
*/
if (S->Flags & SF_GLOBAL) {
- S->Flags &= ~SF_GLOBAL;
if (S->Flags & SF_DEFINED) {
- S->Flags |= SF_EXPORT;
+ SymExportFromGlobal (S);
} else {
- S->Flags |= SF_IMPORT;
+ SymImportFromGlobal (S);
}
}
S = S->List;
}
- /* Second pass: Walk again through the symbols. Ignore undefined's, since
- * we handled them in the last pass, and ignore trampoline symbols, since
- * we handled them in the last pass, too.
+ /* Second pass: Walk again through the symbols. Count exports and imports
+ * and set address sizes where this has not happened before. Ignore
+ * undefined's, since we handled them in the last pass, and ignore unused
+ * symbols, since we handled them in the last pass, too.
*/
S = SymList;
while (S) {
- if ((S->Flags & SF_TRAMPOLINE) == 0 &&
+ if ((S->Flags & SF_UNUSED) == 0 &&
(S->Flags & SF_UNDEFMASK) != SF_UNDEFVAL) {
+
+ /* Check for defined symbols that were never referenced */
if ((S->Flags & SF_DEFINED) != 0 && (S->Flags & SF_REFERENCED) == 0) {
- /* Symbol was defined but never referenced */
- PWarning (&S->Pos, 2,
- "Symbol `%s' is defined but never used",
- GetString (S->Name));
+ const StrBuf* Name = GetStrBuf (S->Name);
+ if (SB_At (Name, 0) != '.') { /* Ignore internals */
+ LIWarning (&S->LineInfos, 2,
+ "Symbol `%m%p' is defined but never used",
+ GetSymName (S));
+ }
}
+
+ /* Assign an index to all imports */
if (S->Flags & SF_IMPORT) {
- if ((S->Flags & (SF_REFERENCED | SF_FORCED)) == SF_NONE) {
- /* Imported symbol is not referenced */
- PWarning (&S->Pos, 2,
- "Symbol `%s' is imported but never used",
- GetString (S->Name));
- } else {
- /* Give the import an index, count imports */
- S->Index = ImportCount++;
- S->Flags |= SF_INDEXED;
- }
+ if ((S->Flags & (SF_REFERENCED | SF_FORCED)) == SF_NONE) {
+ /* Imported symbol is not referenced */
+ LIWarning (&S->LineInfos, 2,
+ "Symbol `%m%p' is imported but never used",
+ GetSymName (S));
+ } else {
+ /* Give the import an id, count imports */
+ S->ImportId = ImportCount++;
+ }
}
+
+ /* Count exports */
if (S->Flags & SF_EXPORT) {
- /* Give the export an index, count exports */
- S->Index = ExportCount++;
- S->Flags |= SF_INDEXED;
+ ++ExportCount;
}
+
+ /* If the symbol is defined but has an unknown address size,
+ * recalculate it.
+ */
+ if (SymHasExpr (S) && S->AddrSize == ADDR_SIZE_DEFAULT) {
+ ExprDesc ED;
+ ED_Init (&ED);
+ StudyExpr (S->Expr, &ED);
+ S->AddrSize = ED.AddrSize;
+ if (SymIsExport (S)) {
+ if (S->ExportSize == ADDR_SIZE_DEFAULT) {
+ /* Use the real export size */
+ S->ExportSize = S->AddrSize;
+ } else if (S->AddrSize > S->ExportSize) {
+ /* We're exporting a symbol smaller than it actually is */
+ LIWarning (&S->LineInfos, 1,
+ "Symbol `%m%p' is %s but exported %s",
+ GetSymName (S),
+ AddrSizeToStr (S->AddrSize),
+ AddrSizeToStr (S->ExportSize));
+ }
+ }
+ ED_Done (&ED);
+ }
+
+ /* If the address size of the symbol was guessed, check the guess
+ * against the actual address size and print a warning if the two
+ * differ.
+ */
+ if (S->AddrSize != ADDR_SIZE_DEFAULT) {
+ /* Do we have data for this address size? */
+ if (S->AddrSize <= sizeof (S->GuessedUse) / sizeof (S->GuessedUse[0])) {
+ /* Get the file position where the symbol was used */
+ const FilePos* P = S->GuessedUse[S->AddrSize - 1];
+ if (P) {
+ PWarning (P, 0,
+ "Didn't use %s addressing for `%m%p'",
+ AddrSizeToStr (S->AddrSize),
+ GetSymName (S));
+ }
+ }
+ }
+
}
/* Next symbol */
SymEntry* S = SymList;
while (S) {
- /* Ignore trampoline symbols */
- if ((S->Flags & SF_TRAMPOLINE) != 0) {
+ /* Ignore unused symbols */
+ if ((S->Flags & SF_UNUSED) != 0) {
fprintf (F,
- "%-24s %s %s %s %s %s\n",
- GetString (S->Name),
+ "%m%-24p %s %s %s %s %s\n",
+ GetSymName (S),
(S->Flags & SF_DEFINED)? "DEF" : "---",
(S->Flags & SF_REFERENCED)? "REF" : "---",
(S->Flags & SF_IMPORT)? "IMP" : "---",
*/
S = SymList;
while (S) {
- if ((S->Flags & (SF_TRAMPOLINE | SF_IMPORT)) == SF_IMPORT &&
+ if ((S->Flags & (SF_UNUSED | SF_IMPORT)) == SF_IMPORT &&
(S->Flags & (SF_REFERENCED | SF_FORCED)) != 0) {
- if (S->AddrSize == ADDR_SIZE_ZP) {
- ObjWrite8 (IMP_ZP);
- } else {
- ObjWrite8 (IMP_ABS);
- }
+ ObjWrite8 (S->AddrSize);
ObjWriteVar (S->Name);
- ObjWritePos (&S->Pos);
+ WriteLineInfo (&S->LineInfos);
}
S = S->List;
}
-static unsigned char GetExportExprMask (SymEntry* S)
-/* Return the expression bits for the given symbol table entry */
-{
- unsigned char ExprMask;
-
- /* Check if the symbol is const */
- ExprMask = (SymIsConst (S))? EXP_CONST : EXP_EXPR;
-
- /* Add zeropage/abs bits */
- ExprMask |= (S->ExportSize == ADDR_SIZE_ZP)? EXP_ZP : EXP_ABS;
-
- /* Add the label/equate bits */
- ExprMask |= (S->Flags & SF_LABEL)? EXP_LABEL : EXP_EQUATE;
-
- /* Return the mask */
- return ExprMask;
-}
-
-
-
void WriteExports (void)
/* Write the exports list to the object file */
{
/* Walk throught list and write all exports to the file */
S = SymList;
while (S) {
- if ((S->Flags & SF_EXPMASK) == SF_EXPVAL) {
- unsigned char ExprMask;
-
- /* Finalize an associated expression if we have one */
- SymFinalize (S);
-
- /* Get the expression bits */
- ExprMask = GetExportExprMask (S);
+ if ((S->Flags & (SF_UNUSED | SF_EXPORT)) == SF_EXPORT) {
+
+ /* Get the expression bits and the value */
+ long ConstVal;
+ unsigned ExprMask = GetSymInfoFlags (S, &ConstVal);
+
+ /* Check if this symbol has a size. If so, remember it in the
+ * flags.
+ */
+ long Size;
+ SymEntry* SizeSym = FindSizeOfSymbol (S);
+ if (SizeSym != 0 && SymIsConst (SizeSym, &Size)) {
+ ExprMask |= SYM_SIZE;
+ }
/* Count the number of ConDes types */
for (Type = 0; Type < CD_TYPE_COUNT; ++Type) {
- if (S->ConDesPrio[Type] != CD_PRIO_NONE) {
- INC_EXP_CONDES_COUNT (ExprMask);
- }
+ if (S->ConDesPrio[Type] != CD_PRIO_NONE) {
+ SYM_INC_CONDES_COUNT (ExprMask);
+ }
}
- /* Write the type */
- ObjWrite8 (ExprMask);
+ /* Write the type and the export size */
+ ObjWriteVar (ExprMask);
+ ObjWrite8 (S->ExportSize);
/* Write any ConDes declarations */
- if (GET_EXP_CONDES_COUNT (ExprMask) > 0) {
- for (Type = 0; Type < CD_TYPE_COUNT; ++Type) {
- unsigned char Prio = S->ConDesPrio[Type];
- if (Prio != CD_PRIO_NONE) {
- ObjWrite8 (CD_BUILD (Type, Prio));
- }
- }
+ if (SYM_GET_CONDES_COUNT (ExprMask) > 0) {
+ for (Type = 0; Type < CD_TYPE_COUNT; ++Type) {
+ unsigned char Prio = S->ConDesPrio[Type];
+ if (Prio != CD_PRIO_NONE) {
+ ObjWrite8 (CD_BUILD (Type, Prio));
+ }
+ }
}
/* Write the name */
ObjWriteVar (S->Name);
/* Write the value */
- if ((ExprMask & EXP_MASK_VAL) == EXP_CONST) {
+ if (SYM_IS_CONST (ExprMask)) {
/* Constant value */
- ObjWrite32 (S->V.Val);
+ ObjWrite32 (ConstVal);
} else {
/* Expression involved */
- WriteExpr (S->V.Expr);
+ WriteExpr (S->Expr);
+ }
+
+ /* If the symbol has a size, write it to the file */
+ if (SYM_HAS_SIZE (ExprMask)) {
+ ObjWriteVar (Size);
}
- /* Write the source file position */
- ObjWritePos (&S->Pos);
+ /* Write the line infos */
+ WriteLineInfo (&S->LineInfos);
}
S = S->List;
}
-static unsigned char GetDbgExprMask (SymEntry* S)
-/* Return the expression bits for the given symbol table entry */
-{
- unsigned char ExprMask;
-
- /* Check if the symbol is const */
- ExprMask = (SymIsConst (S))? EXP_CONST : EXP_EXPR;
-
- /* Add zeropage/abs bits */
- ExprMask |= (S->AddrSize == ADDR_SIZE_ZP)? EXP_ZP : EXP_ABS;
-
- /* Add the label/equate bits */
- ExprMask |= (S->Flags & SF_LABEL)? EXP_LABEL : EXP_EQUATE;
-
- /* Return the mask */
- return ExprMask;
-}
-
-
-
void WriteDbgSyms (void)
/* Write a list of all symbols to the object file */
{
/* Check if debug info is requested */
if (DbgSyms) {
- /* Walk through the list and count the symbols */
- Count = 0;
- S = SymList;
- while (S) {
- if ((S->Flags & SF_DBGINFOMASK) == SF_DBGINFOVAL) {
- ++Count;
- }
- S = S->List;
- }
+ /* Walk through the list, give each symbol an id and count them */
+ Count = 0;
+ S = SymList;
+ while (S) {
+ if ((S->Flags & SF_DBGINFOMASK) == SF_DBGINFOVAL &&
+ !IsSizeOfSymbol (S)) {
+ S->DebugSymId = Count++;
+ }
+ S = S->List;
+ }
- /* Write the symbol count to the list */
+ /* Write the symbol count to the list */
ObjWriteVar (Count);
- /* Walk through list and write all symbols to the file */
- S = SymList;
- while (S) {
- if ((S->Flags & SF_DBGINFOMASK) == SF_DBGINFOVAL) {
- unsigned char ExprMask;
+ /* Walk through list and write all symbols to the file. Ignore size
+ * symbols.
+ */
+ S = SymList;
+ while (S) {
+ if ((S->Flags & SF_DBGINFOMASK) == SF_DBGINFOVAL &&
+ !IsSizeOfSymbol (S)) {
+
+ /* Get the expression bits and the value */
+ long ConstVal;
+ unsigned ExprMask = GetSymInfoFlags (S, &ConstVal);
+
+ /* Check if this symbol has a size. If so, remember it in the
+ * flags.
+ */
+ long Size;
+ SymEntry* SizeSym = FindSizeOfSymbol (S);
+ if (SizeSym != 0 && SymIsConst (SizeSym, &Size)) {
+ ExprMask |= SYM_SIZE;
+ }
- /* Finalize an associated expression if we have one */
- SymFinalize (S);
+ /* Write the type */
+ ObjWriteVar (ExprMask);
- /* Get the expression bits */
- ExprMask = GetDbgExprMask (S);
+ /* Write the address size */
+ ObjWrite8 (S->AddrSize);
- /* Write the type */
- ObjWrite8 (ExprMask);
+ /* Write the id of the parent. For normal symbols, this is a
+ * scope (symbol table), for cheap locals, it's a symbol.
+ */
+ if (SYM_IS_STD (ExprMask)) {
+ ObjWriteVar (S->Sym.Tab->Id);
+ } else {
+ ObjWriteVar (S->Sym.Entry->DebugSymId);
+ }
/* Write the name */
ObjWriteVar (S->Name);
/* Write the value */
- if ((ExprMask & EXP_MASK_VAL) == EXP_CONST) {
+ if (SYM_IS_CONST (ExprMask)) {
/* Constant value */
- ObjWrite32 (S->V.Val);
+ ObjWrite32 (ConstVal);
} else {
/* Expression involved */
- WriteExpr (S->V.Expr);
+ WriteExpr (S->Expr);
}
- /* Write the source file position */
- ObjWritePos (&S->Pos);
+ /* If the symbol has a size, write it to the file */
+ if (SYM_HAS_SIZE (ExprMask)) {
+ ObjWriteVar (Size);
+ }
+
+ /* Write the line infos */
+ WriteLineInfo (&S->LineInfos);
}
S = S->List;
}
+void WriteScopes (void)
+/* Write the scope table to the object file */
+{
+ /* Tell the object file module that we're about to start the scopes */
+ ObjStartScopes ();
+
+ /* We will write scopes only if debug symbols are requested */
+ if (DbgSyms) {
+
+ /* Get head of list */
+ const SymTable* S = LastScope;
+
+ /* Write the scope count to the file */
+ ObjWriteVar (ScopeCount);
+
+ /* Walk through all scopes and write them to the file */
+ while (S) {
+
+ /* Type must be defined */
+ CHECK (S->Type != SCOPETYPE_UNDEF);
+
+ /* Id of scope */
+ ObjWriteVar (S->Id);
+
+ /* Id of parent scope */
+ if (S->Parent) {
+ ObjWriteVar (S->Parent->Id);
+ } else {
+ ObjWriteVar (0);
+ }
+
+ /* Lexical level */
+ ObjWriteVar (S->Level);
+
+ /* Scope flags (currently always zero) */
+ ObjWriteVar (0);
+
+ /* Type of scope */
+ ObjWriteVar (S->Type);
+
+ /* Name of the scope */
+ ObjWriteVar (S->Name);
+
+ /* Segment ranges for this scope */
+ WriteSegRanges (&S->SegRanges);
+
+ /* Next scope */
+ S = S->Next;
+ }
+
+ } else {
+
+ /* No debug info requested */
+ ObjWriteVar (0);
+
+ }
+
+ /* Done writing the scopes */
+ ObjEndScopes ();
+}
+
+
projects / cc65 / blobdiff