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457 lines
11 KiB
C
457 lines
11 KiB
C
/*****************************************************************************/
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/* */
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/* main.c */
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/* */
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/* Main program for the ld65 linker */
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/* */
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/* */
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/* */
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/* (C) 1998-2001 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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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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/* common */
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#include "cmdline.h"
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#include "libdefs.h"
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#include "objdefs.h"
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#include "print.h"
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#include "target.h"
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#include "version.h"
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#include "xmalloc.h"
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/* ld65 */
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#include "binfmt.h"
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#include "condes.h"
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#include "config.h"
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#include "error.h"
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#include "exports.h"
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#include "fileio.h"
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#include "global.h"
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#include "library.h"
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#include "mapfile.h"
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#include "objfile.h"
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#include "scanner.h"
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#include "segments.h"
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#include "tgtcfg.h"
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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static unsigned ObjFiles = 0; /* Count of object files linked */
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static unsigned LibFiles = 0; /* Count of library files linked */
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static const char* LibPath = 0; /* Search path for modules */
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static unsigned LibPathLen = 0; /* Length of LibPath */
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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static void Usage (void)
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/* Print usage information and exit */
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{
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fprintf (stderr,
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"Usage: %s [options] module ...\n"
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"Short options:\n"
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" -C name\t\tUse linker config file\n"
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" -Ln name\t\tCreate a VICE label file\n"
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" -Lp\t\t\tMark write protected segments as such (VICE)\n"
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" -S addr\t\tSet the default start address\n"
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" -V\t\t\tPrint the linker version\n"
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" -h\t\t\tHelp (this text)\n"
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" -m name\t\tCreate a map file\n"
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" -o name\t\tName the default output file\n"
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" -t sys\t\tSet the target system\n"
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" -v\t\t\tVerbose mode\n"
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" -vm\t\t\tVerbose map file\n"
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"\n"
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"Long options:\n"
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" --config name\tUse linker config file\n"
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" --help\t\tHelp (this text)\n"
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" --mapfile name\tCreate a map file\n"
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" --start-addr addr\tSet the default start address\n"
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" --target sys\t\tSet the target system\n"
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" --version\t\tPrint the linker version\n",
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ProgName);
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}
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static unsigned long CvtNumber (const char* Arg, const char* Number)
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/* Convert a number from a string. Allow '$' and '0x' prefixes for hex
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* numbers.
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*/
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{
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unsigned long Val;
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int Converted;
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/* Convert */
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if (*Number == '$') {
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++Number;
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Converted = sscanf (Number, "%lx", &Val);
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} else {
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Converted = sscanf (Number, "%li", (long*)&Val);
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}
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/* Check if we do really have a number */
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if (Converted != 1) {
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Error ("Invalid number given in argument: %s\n", Arg);
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}
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/* Return the result */
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return Val;
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}
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static int HasPath (const char* Name)
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/* Check if the given Name has a path component */
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{
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return strchr (Name, '/') != 0 || strchr (Name, '\\') != 0;
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}
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static void LinkFile (const char* Name)
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/* Handle one file */
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{
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unsigned long Magic;
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unsigned Len;
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char* NewName = 0;
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/* Try to open the file */
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FILE* F = fopen (Name, "rb");
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if (F == 0) {
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/* We couldn't open the file. If the name doesn't have a path, and we
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* have a search path given, try the name with the search path
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* prepended.
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*/
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if (LibPathLen > 0 && !HasPath (Name)) {
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/* Allocate memory. Account for the trailing zero, and for a
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* path separator character eventually needed.
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*/
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Len = LibPathLen;
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NewName = xmalloc (strlen (Name) + Len + 2);
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/* Build the new name */
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memcpy (NewName, LibPath, Len);
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if (NewName [Len-1] != '/' && NewName [Len-1] != '\\') {
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/* We need an additional path separator */
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NewName [Len++] = '/';
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}
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strcpy (NewName + Len, Name);
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/* Now try to open the new file */
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F = fopen (NewName, "rb");
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}
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if (F == 0) {
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Error ("Cannot open `%s': %s", Name, strerror (errno));
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}
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}
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/* Read the magic word */
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Magic = Read32 (F);
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/* Do we know this type of file? */
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switch (Magic) {
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case OBJ_MAGIC:
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ObjAdd (F, Name);
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++ObjFiles;
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break;
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case LIB_MAGIC:
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LibAdd (F, Name);
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++LibFiles;
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break;
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default:
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fclose (F);
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Error ("File `%s' has unknown type", Name);
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}
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/* If we have allocated memory, free it here. Note: Memory will not always
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* be freed if we run into an error, but that's no problem. Adding more
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* code to work around it will use more memory than the chunk that's lost.
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*/
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xfree (NewName);
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}
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static void OptConfig (const char* Opt attribute ((unused)), const char* Arg)
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/* Define the config file */
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{
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if (CfgAvail ()) {
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Error ("Cannot use -C/-t twice");
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}
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CfgSetName (Arg);
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}
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static void OptDbgFile (const char* Opt attribute ((unused)), const char* Arg)
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/* Give the name of the debug file */
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{
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DbgFileName = Arg;
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}
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static void OptHelp (const char* Opt attribute ((unused)),
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const char* Arg attribute ((unused)))
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/* Print usage information and exit */
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{
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Usage ();
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exit (EXIT_SUCCESS);
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}
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static void OptMapFile (const char* Opt attribute ((unused)), const char* Arg)
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/* Give the name of the map file */
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{
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MapFileName = Arg;
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}
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static void OptStartAddr (const char* Opt, const char* Arg)
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/* Set the default start address */
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{
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StartAddr = CvtNumber (Opt, Arg);
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}
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static void OptTarget (const char* Opt attribute ((unused)), const char* Arg)
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/* Set the target system */
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{
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const TargetDesc* D;
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/* Map the target name to a target id */
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Target = FindTarget (Arg);
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if (Target == TGT_UNKNOWN) {
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Error ("Invalid target name: `%s'", Arg);
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}
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/* Get the target description record */
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D = &Targets[Target];
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/* Set the target data */
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DefaultBinFmt = D->BinFmt;
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CfgSetBuf (D->Cfg);
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}
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static void OptVersion (const char* Opt attribute ((unused)),
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const char* Arg attribute ((unused)))
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/* Print the assembler version */
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{
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fprintf (stderr,
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"ld65 V%u.%u.%u - (C) Copyright 1998-2000 Ullrich von Bassewitz\n",
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VER_MAJOR, VER_MINOR, VER_PATCH);
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}
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int main (int argc, char* argv [])
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/* Assembler main program */
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{
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/* Program long options */
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static const LongOpt OptTab[] = {
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{ "--config", 1, OptConfig },
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{ "--dbgfile", 1, OptDbgFile },
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{ "--help", 0, OptHelp },
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{ "--mapfile", 1, OptMapFile },
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{ "--start-addr", 1, OptStartAddr },
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{ "--target", 1, OptTarget },
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{ "--version", 0, OptVersion },
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};
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unsigned I;
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/* Initialize the cmdline module */
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InitCmdLine (&argc, &argv, "ld65");
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/* Evaluate the CC65_LIB environment variable */
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LibPath = getenv ("CC65_LIB");
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if (LibPath == 0) {
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/* Use some default path */
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#ifdef CC65_LIB
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LibPath = CC65_LIB;
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#else
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LibPath = "/usr/lib/cc65/lib/";
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#endif
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}
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LibPathLen = strlen (LibPath);
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/* Check the parameters */
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I = 1;
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while (I < ArgCount) {
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/* Get the argument */
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const char* Arg = ArgVec[I];
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/* Check for an option */
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if (Arg [0] == '-') {
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/* An option */
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switch (Arg [1]) {
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case '-':
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LongOption (&I, OptTab, sizeof(OptTab)/sizeof(OptTab[0]));
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break;
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case 'h':
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case '?':
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OptHelp (Arg, 0);
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break;
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case 'm':
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OptMapFile (Arg, GetArg (&I, 2));
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break;
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case 'o':
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OutputName = GetArg (&I, 2);
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break;
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case 't':
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if (CfgAvail ()) {
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Error ("Cannot use -C/-t twice");
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}
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OptTarget (Arg, GetArg (&I, 2));
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break;
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case 'v':
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switch (Arg [2]) {
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case 'm': VerboseMap = 1; break;
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case '\0': ++Verbosity; break;
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default: UnknownOption (Arg);
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}
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break;
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case 'C':
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OptConfig (Arg, GetArg (&I, 2));
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break;
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case 'L':
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switch (Arg [2]) {
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case 'n': LabelFileName = GetArg (&I, 3); break;
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case 'p': WProtSegs = 1; break;
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default: UnknownOption (Arg); break;
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}
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break;
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case 'S':
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OptStartAddr (Arg, GetArg (&I, 2));
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break;
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case 'V':
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OptVersion (Arg, 0);
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break;
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default:
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UnknownOption (Arg);
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break;
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}
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} else {
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/* A filename */
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LinkFile (Arg);
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}
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/* Next argument */
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++I;
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}
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/* Check if we had any object files */
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if (ObjFiles == 0) {
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Error ("No object files to link");
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}
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/* Check if we have a valid configuration */
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if (!CfgAvail ()) {
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Error ("Memory configuration missing");
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}
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/* Read the config file */
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CfgRead ();
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/* Create the condes tables if requested */
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ConDesCreate ();
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/* Assign start addresses for the segments, define linker symbols */
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CfgAssignSegments ();
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/* Create the output file */
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CfgWriteTarget ();
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/* Check for segments not written to the output file */
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CheckSegments ();
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/* If requested, create a map file and a label file for VICE */
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if (MapFileName) {
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CreateMapFile ();
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}
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if (LabelFileName) {
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CreateLabelFile ();
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}
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if (DbgFileName) {
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CreateDbgFile ();
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}
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/* Dump the data for debugging */
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if (Verbosity > 1) {
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SegDump ();
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ConDesDump ();
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}
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/* Return an apropriate exit code */
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return EXIT_SUCCESS;
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}
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