static void AddNotifications (const Collection* LineInfos)
/* Output additional notifications for an error or warning */
{
unsigned I;
unsigned Output;
unsigned Skipped;
/* The basic line info is always in slot zero. It has been used to
** output the actual error or warning. The following slots may contain
** more information. Check them and print additional notifications if
** they're present, but limit the number to a reasonable value.
*/
for (I = 1, Output = 0, Skipped = 0; I < CollCount (LineInfos); ++I) {
/* Get next line info */
const LineInfo* LI = CollConstAt (LineInfos, I);
/* Check the type and output an appropriate note */
const char* Msg;
switch (GetLineInfoType (LI)) {
case LI_TYPE_ASM:
Msg = "Expanded from here";
break;
case LI_TYPE_EXT:
Msg = "Assembler code generated from this line";
break;
case LI_TYPE_MACRO:
Msg = "Macro was defined here";
break;
case LI_TYPE_MACPARAM:
Msg = "Macro parameter came from here";
break;
default:
/* No output */
Msg = 0;
break;
}
/* Output until an upper limit of messages is reached */
if (Msg) {
if (Output < MAX_NOTES) {
PrintMsg (GetSourcePos (LI), "Note", "%s", Msg);
++Output;
} else {
++Skipped;
}
}
}
/* Add a note if we have more stuff that we won't output */
if (Skipped > 0) {
const LineInfo* LI = CollConstAt (LineInfos, 0);
PrintMsg (GetSourcePos (LI), "Note",
"Dropping %u additional line infos", Skipped);
}
}
void PrintDbgModules (FILE* F)
/* Output the modules to a debug info file */
{
unsigned I;
/* Output modules */
for (I = 0; I < CollCount (&ObjDataList); ++I) {
/* Get this object file */
const ObjData* O = CollConstAt (&ObjDataList, I);
/* The main source file is the one at index zero */
const FileInfo* Source = CollConstAt (&O->Files, 0);
/* Output the module line */
fprintf (F,
"mod\tid=%u,name=\"%s\",file=%u",
I,
GetObjFileName (O),
Source->Id);
/* Add library if any */
if (O->Lib != 0) {
fprintf (F, ",lib=%u", GetLibId (O->Lib));
}
/* Terminate the output line */
fputc ('\n', F);
}
}
void CheckOpenIfs (void)
/* Called from the scanner before closing an input file. Will check for any
** open .ifs in this file.
*/
{
const LineInfo* LI;
while (1) {
/* Get the current file number and check if the topmost entry on the
** .IF stack was inserted with this file number
*/
IfDesc* D = GetCurrentIf ();
if (D == 0) {
/* There are no open .IFs */
break;
}
LI = CollConstAt (&D->LineInfos, 0);
if (GetSourcePos (LI)->Name != CurTok.Pos.Name) {
/* The .if is from another file, bail out */
break;
}
/* Start of .if is in the file we're about to leave */
LIError (&D->LineInfos, "Conditional assembly branch was never closed");
FreeIf ();
}
/* Calculate the new overall .IF condition */
CalcOverallIfCond ();
}
static void PrintUnresolved (ExpCheckFunc F, void* Data)
/* Print a list of unresolved symbols. On unresolved symbols, F is
** called (see the comments on ExpCheckFunc in the data section).
*/
{
unsigned I;
/* Print all open imports */
for (I = 0; I < ExpCount; ++I) {
Export* E = ExpPool [I];
if (E->Expr == 0 && E->ImpCount > 0 && F (E->Name, Data) == 0) {
/* Unresolved external */
Import* Imp = E->ImpList;
fprintf (stderr,
"Unresolved external `%s' referenced in:\n",
GetString (E->Name));
while (Imp) {
unsigned J;
for (J = 0; J < CollCount (&Imp->RefLines); ++J) {
const LineInfo* LI = CollConstAt (&Imp->RefLines, J);
fprintf (stderr,
" %s(%u)\n",
GetSourceName (LI),
GetSourceLine (LI));
}
Imp = Imp->Next;
}
}
}
}
char* SearchFile (const SearchPaths* P, const char* File)
/* Search for a file in a list of directories. Return a pointer to a malloced
** area that contains the complete path, if found, return 0 otherwise.
*/
{
char* Name = 0;
StrBuf PathName = AUTO_STRBUF_INITIALIZER;
/* Start the search */
unsigned I;
for (I = 0; I < CollCount (P); ++I) {
/* Copy the next path element into the buffer */
SB_CopyStr (&PathName, CollConstAt (P, I));
/* Add a path separator and the filename */
if (SB_NotEmpty (&PathName)) {
SB_AppendChar (&PathName, '/');
}
SB_AppendStr (&PathName, File);
SB_Terminate (&PathName);
/* Check if this file exists */
if (access (SB_GetBuf (&PathName), 0) == 0) {
/* The file exists, we're done */
Name = xstrdup (SB_GetBuf (&PathName));
break;
}
}
/* Cleanup and return the result of the search */
SB_Done (&PathName);
return Name;
}
void DumpAttrColl (const Collection* C)
/* Dump a collection of attribute/value pairs for debugging */
{
unsigned I;
for (I = 0; I < CollCount (C); ++I) {
const Attr* A = CollConstAt (C, I);
printf ("%s=%s\n", A->Name, A->Value);
}
}
void CheckAssertions (void)
/* Check all assertions */
{
unsigned I;
/* Walk over all assertions */
for (I = 0; I < CollCount (&Assertions); ++I) {
const LineInfo* LI;
const char* Module;
unsigned Line;
/* Get the assertion */
Assertion* A = CollAtUnchecked (&Assertions, I);
/* Ignore assertions that shouldn't be handled at link time */
if (!AssertAtLinkTime (A->Action)) {
continue;
}
/* Retrieve the relevant line info for this assertion */
LI = CollConstAt (&A->LineInfos, 0);
/* Get file name and line number from the source */
Module = GetSourceName (LI);
Line = GetSourceLine (LI);
/* If the expression is not constant, we're not able to handle it */
if (!IsConstExpr (A->Expr)) {
Warning ("Cannot evaluate assertion in module `%s', line %u",
Module, Line);
} else if (GetExprVal (A->Expr) == 0) {
/* Assertion failed */
const char* Message = GetString (A->Msg);
switch (A->Action) {
case ASSERT_ACT_WARN:
case ASSERT_ACT_LDWARN:
Warning ("%s(%u): %s", Module, Line, Message);
break;
case ASSERT_ACT_ERROR:
case ASSERT_ACT_LDERROR:
Error ("%s(%u): %s", Module, Line, Message);
break;
default:
Internal ("Invalid assertion action (%u) in module `%s', "
"line %u (file corrupt?)",
A->Action, Module, Line);
break;
}
}
}
}
static const char* GetString (const Collection* C, unsigned Index)
/* Get a string from a collection. In fact, this function calls CollConstAt,
* but will print a somewhat more readable error message if the index is out
* of bounds.
*/
{
if (Index >= CollCount (C)) {
Error ("Invalid string index (%u) - file corrupt!", Index);
}
return CollConstAt (C, Index);
}
const Attr* NeedAttr (const Collection* C, const char* Name, const char* Op)
/* Search for an attribute with the given name and return it. If the attribute
* is not found, the function terminates with an error using Op as additional
* context in the error message.
*/
{
/* Search for the attribute and return it */
unsigned Index;
if (!FindAttr (C, Name, &Index)) {
Error ("Found no attribute named `%s' for operation %s", Name, Op);
}
return CollConstAt (C, Index);
}
const StrBuf* GetFileName (unsigned Name)
/* Get the name of a file where the name index is known */
{
static const StrBuf ErrorMsg = LIT_STRBUF_INITIALIZER ("(outside file scope)");
const FileEntry* F;
if (Name == 0) {
/* Name was defined outside any file scope, use the name of the first
* file instead. Errors are then reported with a file position of
* line zero in the first file.
*/
if (CollCount (&FileTab) == 0) {
/* No files defined until now */
return &ErrorMsg;
} else {
F = CollConstAt (&FileTab, 0);
}
} else {
F = CollConstAt (&FileTab, Name-1);
}
return GetStrBuf (F->Name);
}
const Attr* GetAttr (const Collection* C, const char* Name)
/* Search for an attribute with the given name and return it. The function
* returns NULL if the attribute wasn't found.
*/
{
/* Search for the attribute and return it */
unsigned Index;
if (FindAttr (C, Name, &Index)) {
return CollConstAt (C, Index);
} else {
/* Not found */
return 0;
}
}
void ErrorMsg (const Collection* LineInfos, const char* Format, va_list ap)
/* Print an error message */
{
/* The first entry in the collection is that of the actual source pos */
const LineInfo* LI = CollConstAt (LineInfos, 0);
/* Output an error for this position */
VPrintMsg (GetSourcePos (LI), "Error", Format, ap);
/* Add additional notifications if necessary */
AddNotifications (LineInfos);
/* Count errors */
++ErrorCount;
}
static void WarningMsg (const Collection* LineInfos, const char* Format, va_list ap)
/* Print warning message. */
{
/* The first entry in the collection is that of the actual source pos */
const LineInfo* LI = CollConstAt (LineInfos, 0);
/* Output a warning for this position */
VPrintMsg (GetSourcePos (LI), "Warning", Format, ap);
/* Add additional notifications if necessary */
AddNotifications (LineInfos);
/* Count warnings */
++WarningCount;
}
static void ConvertImports (FILE* F, const O65Data* D)
/* Convert the imports */
{
unsigned I;
if (CollCount (&D->Imports) > 0) {
for (I = 0; I < CollCount (&D->Imports); ++I) {
/* Get the next import */
const O65Import* Import = CollConstAt (&D->Imports, I);
/* Import it by name */
fprintf (F, ".import\t%s\n", Import->Name);
}
fprintf (F, "\n");
}
}
static const char* RelocExpr (const O65Data* D, unsigned char SegID,
unsigned long Val, const O65Reloc* R)
/* Generate the segment relative relocation expression. R is only used if the
* expression contains am import, and may be NULL if this is an error (which
* is then flagged).
*/
{
const O65Import* Import;
switch (SegID) {
case O65_SEGID_UNDEF:
if (R) {
if (R->SymIdx >= CollCount (&D->Imports)) {
Error ("Import index out of range (input file corrupt)");
}
Import = CollConstAt (&D->Imports, R->SymIdx);
return LabelPlusOffs (Import->Name, Val);
} else {
Error ("Relocation references an import which is not allowed here");
return 0;
}
break;
case O65_SEGID_TEXT:
return LabelPlusOffs (CodeLabel, Val - D->Header.tbase);
case O65_SEGID_DATA:
return LabelPlusOffs (DataLabel, Val - D->Header.dbase);
case O65_SEGID_BSS:
return LabelPlusOffs (BssLabel, Val - D->Header.bbase);
case O65_SEGID_ZP:
return LabelPlusOffs (ZeropageLabel, Val - D->Header.zbase);
case O65_SEGID_ABS:
return LabelPlusOffs ("", Val);
default:
Internal ("Cannot handle this segment reference in reloc entry");
}
/* NOTREACHED */
return 0;
}
static void WriteIndex (void)
/* Write the index of a library file */
{
unsigned I;
/* Sync I/O in case the last operation was a read */
fseek (NewLib, 0, SEEK_CUR);
/* Remember the current offset in the header */
Header.IndexOffs = ftell (NewLib);
/* Write the object file count */
WriteVar (NewLib, CollCount (&ObjPool));
/* Write the object files */
for (I = 0; I < CollCount (&ObjPool); ++I) {
WriteIndexEntry (CollConstAt (&ObjPool, I));
}
}
int PushSearchPath (SearchPaths* P, const char* NewPath)
/* Add a new search path to the head of an existing search path list, provided
** that it's not already there. If the path is already at the first position,
** return zero, otherwise return a non zero value.
*/
{
/* Generate a clean copy of NewPath */
char* Path = CleanupPath (NewPath);
/* If we have paths, check if Path is already at position zero */
if (CollCount (P) > 0 && strcmp (CollConstAt (P, 0), Path) == 0) {
/* Match. Delete the copy and return to the caller */
xfree (Path);
return 0;
}
/* Insert a clean copy of the path at position 0, return success */
CollInsert (P, Path, 0);
return 1;
}
static void LibCheckExports (ObjData* O)
/* Insert all exports from the given object file into the global list
* checking for duplicates.
*/
{
unsigned I;
/* Let the user know what we do */
Print (stdout, 1, "Module `%s' (%u exports):\n", O->Name, CollCount (&O->Exports));
/* Insert the exports into the global table */
for (I = 0; I < CollCount (&O->Exports); ++I) {
/* Get the name of the export */
const char* Name = CollConstAt (&O->Exports, I);
/* Insert the name into the hash table */
Print (stdout, 1, " %s\n", Name);
ExpInsert (Name, O);
}
}
static void ConvertExports (FILE* F, const O65Data* D)
/* Convert the exports */
{
unsigned I;
if (CollCount (&D->Exports) > 0) {
for (I = 0; I < CollCount (&D->Exports); ++I) {
/* Get the next import */
const O65Export* Export = CollConstAt (&D->Exports, I);
/* First define it */
fprintf (F, "%s = %s\n",
Export->Name,
RelocExpr (D, Export->SegID, Export->Val, 0));
/* Then export it by name */
fprintf (F, ".export\t%s\n", Export->Name);
}
fprintf (F, "\n");
}
}
void WriteFiles (void)
/* Write the list of input files to the object file */
{
unsigned I;
/* Tell the obj file module that we're about to start the file list */
ObjStartFiles ();
/* Write the file count */
ObjWriteVar (CollCount (&FileTab));
/* Write the file data */
for (I = 0; I < CollCount (&FileTab); ++I) {
/* Get a pointer to the entry */
const FileEntry* F = CollConstAt (&FileTab, I);
/* Write the fields */
ObjWriteVar (F->Name);
ObjWrite32 (F->MTime);
ObjWriteVar (F->Size);
}
/* Done writing files */
ObjEndFiles ();
}
static void ConvertSeg (FILE* F, const O65Data* D, const Collection* Relocs,
const unsigned char* Data, unsigned long Size)
/* Convert one segment */
{
const O65Reloc* R;
unsigned RIdx;
unsigned long Byte;
/* Get the pointer to the first relocation entry if there are any */
R = (CollCount (Relocs) > 0)? CollConstAt (Relocs, 0) : 0;
/* Initialize for the loop */
RIdx = 0;
Byte = 0;
/* Walk over the segment data */
while (Byte < Size) {
if (R && R->Offs == Byte) {
/* We've reached an entry that must be relocated */
unsigned long Val;
switch (R->Type) {
case O65_RTYPE_WORD:
if (Byte >= Size - 1) {
Error ("Found WORD relocation, but not enough bytes left");
} else {
Val = (Data[Byte+1] << 8) + Data[Byte];
Byte += 2;
fprintf (F, "\t.word\t%s\n", RelocExpr (D, R->SegID, Val, R));
}
break;
case O65_RTYPE_HIGH:
Val = (Data[Byte++] << 8) + R->Val;
fprintf (F, "\t.byte\t>(%s)\n", RelocExpr (D, R->SegID, Val, R));
break;
case O65_RTYPE_LOW:
Val = Data[Byte++];
fprintf (F, "\t.byte\t<(%s)\n", RelocExpr (D, R->SegID, Val, R));
break;
case O65_RTYPE_SEGADDR:
if (Byte >= Size - 2) {
Error ("Found SEGADDR relocation, but not enough bytes left");
} else {
Val = (((unsigned long) Data[Byte+2]) << 16) +
(((unsigned long) Data[Byte+1]) << 8) +
(((unsigned long) Data[Byte+0]) << 0) +
R->Val;
Byte += 3;
fprintf (F, "\t.faraddr\t%s\n", RelocExpr (D, R->SegID, Val, R));
}
break;
case O65_RTYPE_SEG:
/* FALLTHROUGH for now */
default:
Internal ("Cannot handle relocation type %d at %lu",
R->Type, Byte);
}
/* Get the next relocation entry */
if (++RIdx < CollCount (Relocs)) {
R = CollConstAt (Relocs, RIdx);
} else {
R = 0;
}
} else {
/* Just a constant value */
fprintf (F, "\t.byte\t$%02X\n", Data[Byte++]);
}
}
fprintf (F, "\n");
}
void Convert (const O65Data* D)
/* Convert the o65 file in D using the given output file. */
{
FILE* F;
unsigned I;
char* Author = 0;
/* For now, we do only accept o65 files generated by the ld65 linker which
* have a specific format.
*/
if (!Debug && D->Header.mode != O65_MODE_CC65) {
Error ("Cannot convert o65 files of this type");
}
/* Output statistics */
PrintO65Stats (D);
/* Walk through the options and print them if verbose mode is enabled.
* Check for a os=cc65 option and bail out if we didn't find one (for
* now - later we switch to special handling).
*/
for (I = 0; I < CollCount (&D->Options); ++I) {
/* Get the next option */
const O65Option* O = CollConstAt (&D->Options, I);
/* Check the type of the option */
switch (O->Type) {
case O65_OPT_FILENAME:
Print (stdout, 1, "O65 filename option: `%s'\n",
GetO65OptionText (O));
break;
case O65_OPT_OS:
if (O->Len == 2) {
Warning ("Operating system option without data found");
} else {
Print (stdout, 1, "O65 operating system option: `%s'\n",
GetO65OSName (O->Data[0]));
switch (O->Data[0]) {
case O65_OS_CC65_MODULE:
if (Model != O65_MODEL_NONE &&
Model != O65_MODEL_CC65_MODULE) {
Warning ("Wrong o65 model for input file specified");
} else {
Model = O65_MODEL_CC65_MODULE;
}
break;
}
}
break;
case O65_OPT_ASM:
Print (stdout, 1, "O65 assembler option: `%s'\n",
GetO65OptionText (O));
break;
case O65_OPT_AUTHOR:
if (Author) {
xfree (Author);
}
Author = xstrdup (GetO65OptionText (O));
Print (stdout, 1, "O65 author option: `%s'\n", Author);
break;
case O65_OPT_TIMESTAMP:
Print (stdout, 1, "O65 timestamp option: `%s'\n",
GetO65OptionText (O));
break;
default:
Warning ("Found unknown option, type %d, length %d",
O->Type, O->Len);
break;
}
}
/* If we shouldn't generate output, we're done here */
if (NoOutput) {
return;
}
/* Open the output file */
F = fopen (OutputName, "w");
if (F == 0) {
Error ("Cannot open `%s': %s", OutputName, strerror (errno));
}
/* Create a header */
fprintf (F, ";\n; File generated by co65 v %s using model `%s'\n;\n",
GetVersionAsString (), GetModelName (Model));
/* Select the CPU */
if ((D->Header.mode & O65_CPU_MASK) == O65_CPU_65816) {
fprintf (F, ".p816\n");
}
/* Object file options */
fprintf (F, ".fopt\t\tcompiler,\"co65 v %s\"\n", GetVersionAsString ());
if (Author) {
fprintf (F, ".fopt\t\tauthor, \"%s\"\n", Author);
xfree (Author);
Author = 0;
}
/* Several other assembler options */
fprintf (F, ".case\t\ton\n");
fprintf (F, ".debuginfo\t%s\n", (DebugInfo != 0)? "on" : "off");
/* Setup/export the segment labels */
SetupSegLabels (F);
/* End of header */
fprintf (F, "\n");
/* Imported identifiers */
ConvertImports (F, D);
/* Exported identifiers */
ConvertExports (F, D);
/* Code segment */
ConvertCodeSeg (F, D);
/* Data segment */
ConvertDataSeg (F, D);
/* BSS segment */
ConvertBssSeg (F, D);
/* Zero page segment */
ConvertZeropageSeg (F, D);
/* End of data */
fprintf (F, ".end\n");
fclose (F);
}
void CS_Output (CodeSeg* S)
/* Output the code segment data to the output file */
{
unsigned I;
const LineInfo* LI;
/* Get the number of entries in this segment */
unsigned Count = CS_GetEntryCount (S);
/* If the code segment is empty, bail out here */
if (Count == 0) {
return;
}
/* Generate register info */
CS_GenRegInfo (S);
/* Output the segment directive */
WriteOutput (".segment\t\"%s\"\n\n", S->SegName);
/* Output all entries, prepended by the line information if it has changed */
LI = 0;
for (I = 0; I < Count; ++I) {
/* Get the next entry */
const CodeEntry* E = CollConstAt (&S->Entries, I);
/* Check if the line info has changed. If so, output the source line
* if the option is enabled and output debug line info if the debug
* option is enabled.
*/
if (E->LI != LI) {
/* Line info has changed, remember the new line info */
LI = E->LI;
/* Add the source line as a comment. Beware: When line continuation
* was used, the line may contain newlines.
*/
if (AddSource) {
const char* L = LI->Line;
WriteOutput (";\n; ");
while (*L) {
const char* N = strchr (L, '\n');
if (N) {
/* We have a newline, just write the first part */
WriteOutput ("%.*s\n; ", (int) (N - L), L);
L = N+1;
} else {
/* No Newline, write as is */
WriteOutput ("%s\n", L);
break;
}
}
WriteOutput (";\n");
}
/* Add line debug info */
if (DebugInfo) {
WriteOutput ("\t.dbg\tline, \"%s\", %u\n",
GetInputName (LI), GetInputLine (LI));
}
}
/* Output the code */
CE_Output (E);
}
/* If debug info is enabled, terminate the last line number information */
if (DebugInfo) {
WriteOutput ("\t.dbg\tline\n");
}
/* Free register info */
CS_FreeRegInfo (S);
}