097a01094e
all sorts of things in the object files. This does not only make the object files smaller, but does also remove several limits (strings may be longer than 255 bytes, several counters no longer have 8 or 16 bit limits). git-svn-id: svn://svn.cc65.org/cc65/trunk@260 b7a2c559-68d2-44c3-8de9-860c34a00d81
167 lines
6.0 KiB
C
167 lines
6.0 KiB
C
/*****************************************************************************/
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/* */
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/* exports.h */
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/* */
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/* Exports handing for the ld65 linker */
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/* */
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/* */
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/* */
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/* (C) 1998-2000 Ullrich von Bassewitz */
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/* Wacholderweg 14 */
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/* D-70597 Stuttgart */
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/* EMail: uz@musoftware.de */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#ifndef EXPORTS_H
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#define EXPORTS_H
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#include <stdio.h>
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/* common */
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#include "exprdefs.h"
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#include "filepos.h"
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/* ld65 */
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#include "objdata.h"
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#include "config.h"
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* Import symbol structure */
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typedef struct Import_ Import;
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struct Import_ {
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Import* Next; /* Single linked list */
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ObjData* Obj; /* Object file that imports the name */
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FilePos Pos; /* File position of reference */
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union {
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struct Export_* Exp; /* Matching export for this import */
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const char* Name; /* Name if not in table */
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} V;
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unsigned char Type; /* Type of import */
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};
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/* Export symbol structure */
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typedef struct Export_ Export;
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struct Export_ {
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Export* Next; /* Hash table link */
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unsigned Flags; /* Generic flags */
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ObjData* Obj; /* Object file that exports the name */
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unsigned ImpCount; /* How many imports for this symbol? */
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Import* ImpList; /* List of imports for this symbol */
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FilePos Pos; /* File position of definition */
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ExprNode* Expr; /* Expression (0 if not def'd) */
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unsigned char Type; /* Type of export */
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char* Name; /* Name - dynamically allocated */
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};
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/* Prototype of a function that is called if an undefined symbol is found. It
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* may check if the symbol is an external symbol (for binary formats that
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* support externals) and will return zero if the symbol could not be
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* resolved, or a value != zero if the symbol could be resolved. The
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* CheckExports routine will print out the missing symbol in the first case.
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*/
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typedef int (*ExpCheckFunc) (const char* Name, void* Data);
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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Import* ReadImport (FILE* F, ObjData* Obj);
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/* Read an import from a file and insert it into the table */
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void InsertImport (Import* I);
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/* Insert an import into the table */
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Export* ReadExport (FILE* F, ObjData* Obj);
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/* Read an export from a file */
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void InsertExport (Export* E);
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/* Insert an exported identifier and check if it's already in the list */
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Export* CreateConstExport (const char* Name, long Value);
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/* Create an export for a literal date */
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Export* CreateMemExport (const char* Name, Memory* Mem, unsigned long Offs);
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/* Create an relative export for a memory area offset */
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int IsUnresolved (const char* Name);
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/* Check if this symbol is an unresolved export */
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int IsConstExport (const Export* E);
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/* Return true if the expression associated with this export is const */
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long GetExportVal (const Export* E);
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/* Get the value of this export */
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void CheckExports (ExpCheckFunc F, void* Data);
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/* Check if there are any unresolved symbols. On unresolved symbols, F is
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* called (see the comments on ExpCheckFunc in the data section).
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*/
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void PrintExportMap (FILE* F);
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/* Print an export map to the given file */
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void PrintImportMap (FILE* F);
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/* Print an import map to the given file */
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void PrintExportLabels (FILE* F);
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/* Print the exports in a VICE label file */
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void MarkExport (Export* E);
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/* Mark the export */
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void UnmarkExport (Export* E);
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/* Remove the mark from the export */
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int ExportHasMark (Export* E);
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/* Return true if the export has a mark */
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void CircularRefError (const Export* E);
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/* Print an error about a circular reference using to define the given export */
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/* End of exports.h */
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#endif
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