* Extensions: P. Felber
*/
+#define EQ(A,B) !strcmp((A),(B))
+#define MAXLINE 254 /*when using fgets*/
+
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
typedef struct slibrarysymbol *pmlibrarysymbol;
struct slibrarysymbol {
- char name[40];
+ char name[NCPS];
pmlibrarysymbol next;
};
char *str;
char relfil[FILSPC];
char filename[FILSPC];
+ long offset; //if > 0, the embedded file offset in the library file libspc
pmlibrarysymbol symbols;
pmlibraryfile next;
};
}
}
+/*Load a .rel file embedded in a sdcclib file*/
+void LoadRel(FILE * libfp, char * ModName)
+{
+ char str[NINPUT+2];
+ int state=0;
+
+ while (fgets(str, NINPUT, libfp) != NULL)
+ {
+ str[NINPUT+1] = '\0';
+ chop_crlf(str);
+ switch(state)
+ {
+ case 0:
+ if(EQ(str, "<FILE>"))
+ {
+ fgets(str, NINPUT, libfp);
+ str[NINPUT+1] = '\0';
+ chop_crlf(str);
+ if(EQ(str, ModName)) state=1;
+ else
+ {
+ printf("Bad offset in library file str=%s, Modname=%s\n", str, ModName);
+ lkexit(1);
+ }
+ }
+ break;
+ case 1:
+ if(EQ(str, "<REL>")) state=2;
+ break;
+ case 2:
+ if(EQ(str, "</REL>")) return;
+ ip = str;
+ link();
+ break;
+ }
+ }
+}
/*)Function VOID fndsym(name)
*
lbfh->filspc = ThisLibr->str;
lbfh->relfil = (char *) new (strlen(ThisLibr->relfil) + 1);
strcpy(lbfh->relfil,ThisLibr->relfil);
- loadfile(lbfh->filspc);
+ lbfh->offset = ThisLibr->offset;
+ if(lbfh->offset>0)
+ { /*For an embedded object file in a library*/
+ void loadfile_SdccLib(char * libspc, char * module, long offset);
+ loadfile_SdccLib(lbfh->libspc, lbfh->relfil, lbfh->offset);
+ }
+ else
+ { /*For a stand alone object file*/
+ loadfile(lbfh->filspc);
+ }
ThisLibr->loaded=1;
}
return (1); /* Found the symbol, return */
ThisLibr=ThisLibr->next; /* Next library in list */
}
return 0; /* Failure - symbol not found in any library */
-};
+}
+
+pmlibraryfile buildlibraryindex_SdccLib(char * PathLib, FILE * libfp, char * DirLib, pmlibraryfile This)
+{
+ char ModName[NCPS]="";
+ char FLine[MAXLINE+1];
+ int state=0;
+ long IndexOffset=0, FileOffset;
+ pmlibrarysymbol ThisSym;
+
+ while(!feof(libfp))
+ {
+ FLine[0]=0;
+ fgets(FLine, MAXLINE, libfp);
+ chop_crlf(FLine);
+
+ switch(state)
+ {
+ case 0:
+ if(EQ(FLine, "<INDEX>"))
+ {
+ /*The next line has the size of the index*/
+ FLine[0]=0;
+ fgets(FLine, MAXLINE, libfp);
+ chop_crlf(FLine);
+ IndexOffset=atol(FLine);
+ state=1;
+ }
+ break;
+ case 1:
+ if(EQ(FLine, "<MODULE>"))
+ {
+ /*The next line has the name of the module and the offset
+ of the corresponding embedded file in the library*/
+ FLine[0]=0;
+ fgets(FLine, MAXLINE, libfp);
+ chop_crlf(FLine);
+ sscanf(FLine, "%s %ld", ModName, &FileOffset);
+ state=2;
+
+ /*create a new libraryfile object for this module*/
+ This->next = (pmlibraryfile)new( sizeof( mlibraryfile ));
+ if (This->next == NULL)
+ {
+ printf("panic: can't allocate memory.\n");
+ exit(-1);
+ }
+
+ This=This->next;
+ This->next = NULL;
+ This->loaded=-1; /*Kind of useless, but...*/
+ This->offset=FileOffset+IndexOffset;
+ This->libspc=PathLib;
+ strcpy(This->relfil, ModName);
+
+ #ifdef SDK
+ sprintf(This->filename, "%s%s%co", DirLib, ModName, FSEPX);
+ #else /* SDK */
+ sprintf(This->filename, "%s%s%crel", DirLib, ModName, FSEPX);
+ #endif /* SDK */
+
+ This->str=This->filename;
+
+ ThisSym = This->symbols = (pmlibrarysymbol)malloc( sizeof(mlibrarysymbol));
+ ThisSym->next = NULL;
+ }
+ else if(EQ(FLine, "</INDEX>"))
+ {
+ return This; /*Finish, get out of here*/
+ }
+ break;
+ case 2:
+ if(EQ(FLine, "</MODULE>"))
+ {
+ This->loaded=0;
+ /*Create the index for the next module*/
+ state=1;
+ }
+ else
+ {
+ /*Add the symbols*/
+ ThisSym->next = (pmlibrarysymbol)malloc(sizeof(mlibrarysymbol));
+ ThisSym=ThisSym->next;
+ if (ThisSym == NULL)
+ {
+ printf("panic: can't allocate memory.\n");
+ exit(-2);
+ }
+ ThisSym->next=NULL;
+ strcpy(ThisSym->name, FLine);
+ }
+ break;
+
+ default:
+ return This; /*State machine should never reach this point, but just in case...*/
+ break;
+ }
+ }
+
+ return This; /*State machine should never reach this point, but just in case...*/
+}
+
/* buildlibraryindex - build an in-memory cache of the symbols contained in
* the libraries
*/
-
-int buildlibraryindex()
+int buildlibraryindex(void)
{
FILE *libfp, *fp;
struct lbname *lbnh;
/*2*/ while (fgets(relfil, NINPUT, libfp) != NULL) {
relfil[NINPUT+1] = '\0';
- relfil[strlen(relfil) - 1] = '\0';
+ chop_crlf(relfil);
if (path != NULL) {
str = (char *)new(strlen(path)+strlen(relfil)+6);
strcpy(str,path);
} else {
str = (char *)new(strlen(relfil) + 5);
}
+
+ if(strcmp(relfil, "<SDCCLIB>")==0)
+ {
+ /*Get the built in index of a library*/
+ This=buildlibraryindex_SdccLib(lbnh->libspc, libfp, str, This);
+ free(str);
+ fclose(libfp);
+ break; /*get the index for next library*/
+ }
+
+ /*From here down, build the index for the original library
+ format*/
#ifdef SDK
#ifdef UNIX
if (relfil[0] == '/') {
/* Opened OK - create a new libraryfile object for it */
This->next = (pmlibraryfile)new( sizeof( mlibraryfile ));
if (This->next == NULL) {
- printf("panic: cant allocate memory.\n");
+ printf("panic: can't allocate memory.\n");
exit(-1);
}
This=This->next;
This->next = NULL;
This->loaded=-1;
+ This->offset=-1; /*There should be a rel file*/
strcpy( This->filename, str );
ThisSym->next = (pmlibrarysymbol)malloc(sizeof(mlibrarysymbol));
ThisSym=ThisSym->next;
if (ThisSym == NULL) {
- printf("panic: cant allocate memory.\n");
+ printf("panic: can't allocate memory.\n");
exit(-2);
}
This->loaded=0;
}
#else /* INDEXLIB */
+
+/*Check for a symbol in a SDCC library. If found, add the embedded .rel.
+The library must be created with the SDCC librarian 'sdcclib' since the
+linking process depends on the correct file offsets embedded in the library
+file.*/
+
+int SdccLib(char * PathLib, FILE * libfp, char * DirLib, char * SymName)
+{
+ struct lbfile *lbfh, *lbf;
+ char ModName[NCPS]="";
+ char FLine[MAXLINE+1];
+ int state=0;
+ long IndexOffset=0, FileOffset;
+
+ while(!feof(libfp))
+ {
+ FLine[0]=0;
+ fgets(FLine, MAXLINE, libfp);
+ chop_crlf(FLine);
+
+ switch(state)
+ {
+ case 0:
+ if(EQ(FLine, "<INDEX>"))
+ {
+ /*The next line has the size of the index*/
+ FLine[0]=0;
+ fgets(FLine, MAXLINE, libfp);
+ chop_crlf(FLine);
+ IndexOffset=atol(FLine);
+ state=1;
+ }
+ break;
+ case 1:
+ if(EQ(FLine, "<MODULE>"))
+ {
+ /*The next line has the name of the module and the offset
+ of the corresponding embedded file in the library*/
+ FLine[0]=0;
+ fgets(FLine, MAXLINE, libfp);
+ chop_crlf(FLine);
+ sscanf(FLine, "%s %ld", ModName, &FileOffset);
+ state=2;
+ }
+ else if(EQ(FLine, "</INDEX>"))
+ {
+ /*Reached the end of the index. The symbol is not in this library.*/
+ return 0;
+ }
+ break;
+ case 2:
+ if(EQ(FLine, "</MODULE>"))
+ {
+ /*The symbol is not in this module, try the next one*/
+ state=1;
+ }
+ else
+ {
+ /*Check if this is the symbol we are looking for.*/
+ if (strncmp(SymName, FLine, NCPS)==0)
+ {
+ /*The symbol is in this module.*/
+
+ /*As in the original library format, it is assumed that the .rel
+ files reside in the same directory as the lib files.*/
+ strcat(DirLib, ModName);
+ #ifdef SDK
+ sprintf(&DirLib[strlen(DirLib)], "%co", FSEPX);
+ #else /* SDK */
+ sprintf(&DirLib[strlen(DirLib)], "%crel", FSEPX);
+ #endif /* SDK */
+
+ /*If this module has been loaded already don't load it again.*/
+ lbf = lbfhead;
+ while (lbf)
+ {
+ if(EQ(DirLib, lbf->filspc)) return 1;/*Already loaded*/
+ lbf=lbf->next;
+ }
+
+ /*Add the embedded file to the list of files to be loaded in
+ the second pass. That is performed latter by the function
+ library() below.*/
+ lbfh = (struct lbfile *) new (sizeof(struct lbfile));
+ if (lbfhead == NULL)
+ {
+ lbfhead = lbfh;
+ }
+ else
+ {
+ lbf = lbfhead;
+ while (lbf->next)
+ lbf = lbf->next;
+ lbf->next = lbfh;
+ }
+
+ lbfh->libspc = PathLib;
+ lbfh->filspc = DirLib;
+ lbfh->relfil = (char *) new (strlen(ModName) + 1);
+ strcpy(lbfh->relfil, ModName);
+ /*Library embedded file, so lbfh->offset must be >=0*/
+ lbfh->offset = IndexOffset+FileOffset;
+
+ /*Jump to where the .rel begins and load it.*/
+ fseek(libfp, lbfh->offset, SEEK_SET);
+ LoadRel(libfp, ModName);
+
+ return 1; /*Found the symbol, so success!*/
+ }
+ }
+ break;
+
+ default:
+ return 0; /*It should never reach this point, but just in case...*/
+ break;
+ }
+ }
+
+ return 0; /*The symbol is not in this library*/
+}
+
int
fndsym(name)
char *name;
char symname[NINPUT];
char *path,*str;
char c;
+ int result;
/*
* Search through every library in the linked list "lbnhead".
/*2*/ while (fgets(relfil, NINPUT, libfp) != NULL) {
relfil[NINPUT+1] = '\0';
- relfil[strlen(relfil) - 1] = '\0';
+ chop_crlf(relfil);
if (path != NULL) {
str = (char *) new (strlen(path)+strlen(relfil)+6);
strcpy(str,path);
} else {
str = (char *) new (strlen(relfil) + 5);
}
+
+ /*See if this is a library with embedded files*/
+ if(strcmp(relfil, "<SDCCLIB>")==0)
+ {
+ result=SdccLib(lbnh->libspc, libfp, str, name);
+ fclose(libfp);
+ if(result) return(1); /*Found the symbol*/
+ free(str);
+ /*The symbol is not in the current library,
+ check the next library in the list*/
+ break;
+ }
+
+ /*From here down is the support for libraries in the original format*/
#ifdef SDK
#ifdef UNIX
if (relfil[0] == '/') {
lbfh->libspc = lbnh->libspc;
lbfh->filspc = str;
lbfh->relfil = (char *) new (strlen(relfil) + 1);
+ lbfh->offset = -1; /*Stand alone rel file*/
strcpy(lbfh->relfil,relfil);
fclose(fp);
fclose(libfp);
}
#endif /* INDEXLIB */
+void loadfile_SdccLib(char * libspc, char * module, long offset)
+{
+ FILE *fp;
+
+ if ((fp = fopen(libspc,"r")) != NULL)
+ {
+ fseek(fp, offset, SEEK_SET);
+ LoadRel(fp, module);
+ fclose(fp);
+ }
+}
+
/*)Function VOID library()
*
* The function library() links all the library object files
{
struct lbfile *lbfh;
- for (lbfh=lbfhead; lbfh; lbfh=lbfh->next) {
- loadfile(lbfh->filspc);
+ for (lbfh=lbfhead; lbfh; lbfh=lbfh->next)
+ {
+ if(lbfh->offset<0)
+ {
+ /*Stand alone rel file (original lib format)*/
+ loadfile(lbfh->filspc);
+ }
+ else
+ {
+ /*rel file embedded in lib (new lib format)*/
+ loadfile_SdccLib(lbfh->libspc, lbfh->relfil, lbfh->offset);
+ }
}
}
projects / fw / sdcc / commitdiff