X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=as%2Flink%2Fmcs51%2Flklibr.c;fp=as%2Flink%2Fmcs51%2Flklibr.c;h=e87c9ec30cd24cecf38c4e7c793120aaa59420af;hb=e5eda9d6a5ea34e83b0b1fdcf05db3b04b7aaac8;hp=0000000000000000000000000000000000000000;hpb=0a174b5c835e5487aaa0db4c54e7db84ea1a2e9f;p=fw%2Fsdcc diff --git a/as/link/mcs51/lklibr.c b/as/link/mcs51/lklibr.c new file mode 100644 index 00000000..e87c9ec3 --- /dev/null +++ b/as/link/mcs51/lklibr.c @@ -0,0 +1,1301 @@ +/* lklibr.c */ + +/* + * (C) Copyright 1989-1995 + * All Rights Reserved + * + * Alan R. Baldwin + * 721 Berkeley St. + * Kent, Ohio 44240 + * + * With contributions for the + * object libraries from + * Ken Hornstein + * kenh@cmf.nrl.navy.mil + * + */ + +#define EQ(A,B) !strcmp((A),(B)) +#define MAXLINE 254 /*when using fgets*/ + +#include +#include +#include +#include +#include "aslink.h" + +/*)Module lklibr.c + * + * The module lklibr.c contains the functions which + * (1) specify the path(s) to library files [.LIB] + * (2) specify the library file(s) [.LIB] to search + * (3) search the library files for specific symbols + * and link the module containing this symbol + * + * lklibr.c contains the following functions: + * VOID addpath() + * VOID addlib() + * VOID addfile() + * VOID search() + * VOID fndsym() + * VOID library() + * VOID loadfile() + * + */ + +#ifdef INDEXLIB +typedef struct slibrarysymbol mlibrarysymbol; +typedef struct slibrarysymbol *pmlibrarysymbol; + +struct slibrarysymbol { + char * name; /*Warning: allocate memory before using*/ + pmlibrarysymbol next; +}; + +typedef struct slibraryfile mlibraryfile; +typedef struct slibraryfile *pmlibraryfile; + +struct slibraryfile { + int loaded; + char * libspc; + char * relfil; /*Warning: allocate memory before using*/ + char * filename; /*Warning: allocate memory before using*/ + long offset; //if > 0, the embedded file offset in the library file libspc + pmlibrarysymbol symbols; + pmlibraryfile next; +}; + +/* First entry in the library object symbol cache */ +pmlibraryfile libr=NULL; + +int buildlibraryindex(); +void freelibraryindex (void); +#endif /* INDEXLIB */ + +/*)Function VOID addpath() + * + * The function addpath() creates a linked structure containing + * the paths to various object module library files. + * + * local variables: + * lbpath *lbph pointer to new path structure + * lbpath *lbp temporary pointer + * + * global variables: + * lbpath *lbphead The pointer to the first + * path structure + * + * functions called: + * char getnb() lklex.c + * VOID * new() lksym.c + * int strlen() c_library + * char * strcpy() c_library + * VOID unget() lklex.c + * + * side effects: + * An lbpath structure may be created. + */ + +VOID +addpath() +{ + struct lbpath *lbph, *lbp; + + lbph = (struct lbpath *) new (sizeof(struct lbpath)); + if (lbphead == NULL) { + lbphead = lbph; + } else { + lbp = lbphead; + while (lbp->next) + lbp = lbp->next; + lbp->next = lbph; + } + unget(getnb()); + lbph->path = (char *) new (strlen(ip)+1); + strcpy(lbph->path, ip); +} + +/*)Function VOID addlib() + * + * The function addlib() tests for the existance of a + * library path structure to determine the method of + * adding this library file to the library search structure. + * + * This function calls the function addfile() to actually + * add the library file to the search list. + * + * local variables: + * lbpath *lbph pointer to path structure + * + * global variables: + * lbpath *lbphead The pointer to the first + * path structure + * ip a pointer to the library name + * + * functions called: + * VOID addfile() lklibr.c + * char getnb() lklex.c + * VOID unget() lklex.c + * + * side effects: + * The function addfile() may add the file to + * the library search list. + */ + +VOID +addlib() +{ + struct lbpath *lbph; + int foundcount=0; + + unget(getnb()); + + if (lbphead == NULL) + { + foundcount=addfile(NULL, ip); + } + else + { + for (lbph=lbphead; lbph; lbph=lbph->next) + { + foundcount+=addfile(lbph->path, ip); + } + } + if(foundcount == 0) + { + fprintf(stderr, "?ASlink-Warning-Couldn't find library '%s'\n", ip); + } +} + +/*)Function int addfile(path,libfil) + * + * char *path library path specification + * char *libfil library file specification + * + * The function addfile() searches for the library file + * by concatenating the path and libfil specifications. + * if the library is found, an lbname structure is created + * and linked to any previously defined structures. This + * linked list is used by the function fndsym() to attempt + * to find any undefined symbols. + * + * The function does not give report an error on invalid + * path / file specifications or if the file is not found. + * + * local variables: + * lbname *lbnh pointer to new name structure + * lbname *lbn temporary pointer + * + * global variables: + * lbname *lbnhead The pointer to the first + * path structure + * + * functions called: + * char getnb() lklex.c + * VOID * new() lksym.c + * int strlen() c_library + * char * strcpy() c_library + * VOID unget() lklex.c + * + * side effects: + * An lbname structure may be created. + * + * return: + * 1: the library was found + * 0: the library was not found + */ + +int addfile(char * path, char * libfil) +{ + FILE *fp; + char *str; + struct lbname *lbnh, *lbn; +#ifdef OTHERSYSTEM + int libfilinc=0; +#endif + + if (path != NULL) + { + str = (char *) new (strlen(path) + strlen(libfil) + 6); + strcpy(str,path); +#ifdef OTHERSYSTEM + if (strlen(str) && (str[strlen(str)-1] != '/') && (str[strlen(str)-1] != '\\')) + { + strcat(str,"/"); + } +#endif + } + else + { + str = (char *) new (strlen(libfil) + 5); + } + +#ifdef OTHERSYSTEM + if ((libfil[0] == '/') || (libfil[0] == '\\')) + { + libfil++; + libfilinc=1; + } +#endif + + strcat(str, libfil); + if(strchr(libfil, FSEPX) == NULL) + { + sprintf(&str[strlen(str)], "%clib", FSEPX); + } + + fp=fopen(str, "r"); + if(fp == NULL) + { + /*Ok, that didn't work. Try with the 'libfil' name only*/ +#ifdef OTHERSYSTEM + if(libfilinc) libfil--; +#endif + fp=fopen(libfil, "r"); + if(fp != NULL) + { + /*Bingo! 'libfil' is the absolute path of the library*/ + strcpy(str, libfil); + path=NULL;/*This way 'libfil' and 'path' will be rebuilt from 'str'*/ + } + } + + if(path==NULL) + { + /*'path' can not be null since it is needed to find the '.rel' files associated with + the library. So, get 'path' from 'str' and then chop it off and recreate 'libfil'. + That way putting 'path' and 'libfil' together will result into the original filepath + as contained in 'str'.*/ + int j; + path = (char *) new (strlen(str) + 1); + strcpy(path, str); + for(j=strlen(path)-1; j>=0; j--) + { + if((path[j] == '/') || (path[j] == '\\')) + { + strcpy(libfil, &path[j+1]); + path[j+1]=0; + break; + } + } + if(j<=0) path[0]=0; + } + + if (fp != NULL) + { + fclose(fp); + lbnh = (struct lbname *) new (sizeof(struct lbname)); + if (lbnhead == NULL) + { + lbnhead = lbnh; + } + else + { + lbn = lbnhead; + while (lbn->next) + lbn = lbn->next; + lbn->next = lbnh; + } + + lbnh->path = path; + lbnh->libfil = (char *) new (strlen(libfil) + 1); + strcpy(lbnh->libfil,libfil); + lbnh->libspc = str; + return 1; + } + else + { + free(str); + return 0; + } +} + +/*)Function VOID search() + * + * The function search() looks through all the symbol tables + * at the end of pass 1. If any undefined symbols are found + * then the function fndsym() is called. Function fndsym() + * searches any specified library files to automagically + * import the object modules containing the needed symbol. + * + * After a symbol is found and imported by the function + * fndsym() the symbol tables are again searched. The + * symbol tables are search until no more symbols can be + * resolved within the library files. This ensures that + * back references from one library module to another are + * also resolved. + * + * local variables: + * int i temporary counter + * sym *sp pointer to a symbol structure + * int symfnd found a symbol flag + * + * global variables: + * sym *symhash[] array of pointers to symbol tables + * + * functions called: + * int fndsym() lklibr.c + * + * side effects: + * If a symbol is found then the library object module + * containing the symbol will be imported and linked. + */ + +VOID +search() +{ + register struct sym *sp; + register int i,symfnd; + + /* + * Look for undefined symbols. Keep + * searching until no more symbols are resolved. + */ + symfnd = 1; + while (symfnd) { + symfnd = 0; + /* + * Look through all the symbols + */ + for (i=0; is_type & S_DEF) == 0) { + if (fndsym(sp->s_id)) { + symfnd++; + } + } + sp = sp->s_sp; + } + } + } +} + +/*Load a .rel file embedded in a sdcclib file*/ +void LoadRel(char * libfname, 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, "")) + { + fgets(str, NINPUT, libfp); + str[NINPUT+1] = '\0'; + chop_crlf(str); + if(EQ(str, ModName)) state=1; + else + { + fprintf(stderr, "?Aslink-Error-Bad offset in library file %s(%s)\n", + libfname, ModName); + lkexit(1); + } + } + break; + case 1: + if(EQ(str, "")) state=2; + break; + case 2: + if(EQ(str, "")) return; + ip = str; + link_main(); + break; + } + } +} + +/*Load an .adb file embedded in a sdcclib file. If there is +something between and returns 1, otherwise returns 0. +This way the aomf51 will not have uselless empty modules. */ + +int LoadAdb(FILE * libfp) +{ + char str[MAXLINE+1]; + int state=0; + int ToReturn=0; + + while (fgets(str, MAXLINE, libfp) != NULL) + { + str[NINPUT+1] = '\0'; + chop_crlf(str); + switch(state) + { + case 0: + if(EQ(str, "")) state=1; + break; + case 1: + if(EQ(str, "")) return ToReturn; + fprintf(dfp, "%s\n", str); + ToReturn=1; + break; + } + } + return ToReturn; +} + +/*Check for a symbol in a SDCC library. If found, add the embedded .rel and +.adb files from the library. 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, "")) + { + /*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, "")) + { + /*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, "")) + { + /*Reached the end of the index. The symbol is not in this library.*/ + return 0; + } + break; + case 2: + if(EQ(FLine, "")) + { + /*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); + sprintf(&DirLib[strlen(DirLib)], "%crel", FSEPX); + + /*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(PathLib, libfp, ModName); + + /* if cdb information required & .adb file present */ + if (dflag && dfp) + { + if(LoadAdb(libfp)) + SaveLinkedFilePath(DirLib); + } + 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*/ +} + +/*)Function VOID fndsym(name) + * + * char *name symbol name to find + * + * The function fndsym() searches through all combinations of the + * library path specifications (input by the -k option) and the + * library file specifications (input by the -l option) that + * lead to an existing file. + * + * The file specicifation may be formed in one of two ways: + * + * (1) If the library file contained an absolute + * path/file specification then this becomes filspc. + * (i.e. C:\...) + * + * (2) If the library file contains a relative path/file + * specification then the concatenation of the path + * and this file specification becomes filspc. + * (i.e. \...) + * + * The structure lbfile is created for the first library + * object file which contains the definition for the + * specified undefined symbol. + * + * If the library file [.LIB] contains file specifications for + * non existant files, no errors are returned. + * + * local variables: + * char buf[] [.REL] file input line + * char c [.REL] file input character + * FILE *fp file handle for object file + * lbfile *lbf temporary pointer + * lbfile *lbfh pointer to lbfile structure + * FILE *libfp file handle for library file + * lbname *lbnh pointer to lbname structure + * char *path file specification path + * char relfil[] [.REL] file specification + * char *str combined path and file specification + * char symname[] [.REL] file symbol string + * + * global variables: + * lbname *lbnhead The pointer to the first + * name structure + * lbfile *lbfhead The pointer to the first + * file structure + * + * functions called: + * int fclose() c_library + * int fgets() c_library + * FILE *fopen() c_library + * VOID free() c_library + * char getnb() lklex.c + * VOID lkexit() lkmain.c + * VOID loadfile() lklibr.c + * VOID * new() lksym.c + * char * sprintf() c_library + * int sscanf() c_library + * char * strcat() c_library + * char * strchr() c_library + * char * strcpy() c_library + * int strlen() c_library + * int strncmp() c_library + * VOID unget() lklex.c + * + * side effects: + * If the symbol is found then a new lbfile structure + * is created and added to the linked list of lbfile + * structures. The file containing the found symbol + * is linked. + */ + +#ifdef INDEXLIB + +int fndsym( char *name ) +{ + struct lbfile *lbfh, *lbf; + pmlibraryfile ThisLibr; + pmlibrarysymbol ThisSym = NULL; + + pmlibraryfile FirstFound; + int numfound=0; + + /* Build the index if this is the first call to fndsym */ + if (libr==NULL) buildlibraryindex(); + + /* Iterate through all library object files */ + ThisLibr = libr; + FirstFound = libr; /*So gcc stops whining*/ + while (ThisLibr) + { + /* Iterate through all symbols in an object file */ + ThisSym = ThisLibr->symbols; + + while (ThisSym) + { + if (!strcmp(ThisSym->name, name)) + { + if ((!ThisLibr->loaded) && (numfound==0)) + { + /* Object file is not loaded - add it to the list */ + 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 = ThisLibr->libspc; + lbfh->filspc = ThisLibr->filename; + lbfh->relfil = (char *) new (strlen(ThisLibr->relfil) + 1); + strcpy(lbfh->relfil, ThisLibr->relfil); + 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*/ + /* if cdb information required & adb file present */ + if (dflag && dfp) + { + FILE *xfp = afile(lbfh->filspc, "adb",0); + if (xfp) + { + SaveLinkedFilePath(lbfh->filspc); + copyfile(dfp, xfp); + fclose(xfp); + } + } + loadfile(lbfh->filspc); + } + ThisLibr->loaded=1; + } + + if(numfound==0) + { + numfound++; + FirstFound=ThisLibr; + } + else + { + char absPath1[PATH_MAX]; + char absPath2[PATH_MAX]; +#if defined(__BORLANDC__) || defined(_MSC_VER) || defined(__MINGW32__) + int j; + + _fullpath(absPath1, FirstFound->libspc, PATH_MAX); + _fullpath(absPath2, ThisLibr->libspc, PATH_MAX); + for(j=0; absPath1[j]!=0; j++) absPath1[j]=tolower((unsigned char)absPath1[j]); + for(j=0; absPath2[j]!=0; j++) absPath2[j]=tolower((unsigned char)absPath2[j]); +#else + realpath(FirstFound->libspc, absPath1); + realpath(ThisLibr->libspc, absPath2); +#endif + if( !( EQ(absPath1, absPath2) && EQ(FirstFound->relfil, ThisLibr->relfil) ) ) + { + if(numfound==1) + { + fprintf(stderr, "?Aslink-Warning-Definition of public symbol '%s'" + " found more than once:\n", name); + fprintf(stderr, " Library: '%s', Module: '%s'\n", + FirstFound->libspc, FirstFound->relfil); + } + fprintf(stderr, " Library: '%s', Module: '%s'\n", + ThisLibr->libspc, ThisLibr->relfil); + numfound++; + } + } + } + ThisSym=ThisSym->next; /* Next sym in library */ + } + ThisLibr=ThisLibr->next; /* Next library in list */ + } + return numfound; +} + +pmlibraryfile buildlibraryindex_SdccLib(char * PathLib, FILE * libfp, char * DirLib, pmlibraryfile This) +{ + char ModName[NCPS]=""; + char FLine[MAXLINE+1]; + char buff[PATH_MAX]; + int state=0; + long IndexOffset=0, FileOffset; + pmlibrarysymbol ThisSym = NULL; + + while(!feof(libfp)) + { + FLine[0]=0; + fgets(FLine, MAXLINE, libfp); + chop_crlf(FLine); + + switch(state) + { + case 0: + if(EQ(FLine, "")) + { + /*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, "")) + { + /*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*/ + if(libr==NULL) + { + libr=This=(pmlibraryfile)new( sizeof( mlibraryfile )); + } + else + { + This->next=(pmlibraryfile)new( sizeof( mlibraryfile )); + This=This->next; + } + This->next = NULL; + This->loaded=-1; + This->offset=FileOffset+IndexOffset; + This->libspc=PathLib; + + This->relfil=(char *)new(strlen(ModName)+1); + strcpy(This->relfil, ModName); + + sprintf(buff, "%s%s%crel", DirLib, ModName, FSEPX); + This->filename=(char *)new(strlen(buff)+1); + strcpy(This->filename, buff); + + This->symbols=ThisSym=NULL; /*Start a new linked list of symbols*/ + } + else if(EQ(FLine, "")) + { + return This; /*Finish, get out of here*/ + } + break; + case 2: + if(EQ(FLine, "")) + { + This->loaded=0; + /*Create the index for the next module*/ + state=1; + } + else + { + /*Add the symbols*/ + if(ThisSym==NULL) /*First symbol of the current module*/ + { + ThisSym=This->symbols=(pmlibrarysymbol)new(sizeof(mlibrarysymbol)); + } + else + { + ThisSym->next = (pmlibrarysymbol)new(sizeof(mlibrarysymbol)); + ThisSym=ThisSym->next; + } + ThisSym->next=NULL; + ThisSym->name=(char *)new(strlen(FLine)+1); + 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(void) +{ + FILE *libfp, *fp; + struct lbname *lbnh; + char relfil[NINPUT+2], str[PATH_MAX], *path; + char buf[NINPUT+2], c; + char symname[NINPUT+2]; + pmlibraryfile This=NULL; + pmlibrarysymbol ThisSym; + + /* + * Search through every library in the linked list "lbnhead". + */ + + for (lbnh=lbnhead; lbnh; lbnh=lbnh->next) + { + if ((libfp = fopen(lbnh->libspc, "r")) == NULL) + { + fprintf(stderr, "?Aslink-Error-Cannot open library file %s\n", + lbnh->libspc); + lkexit(1); + } + path = lbnh->path; + + /* + * Read in a line from the library file. + * This is the relative file specification + * for a .REL file in this library. + */ + + while (fgets(relfil, NINPUT, libfp) != NULL) + { + relfil[NINPUT+1] = '\0'; + chop_crlf(relfil); + if (path != NULL) + { + strcpy(str, path); +#ifdef OTHERSYSTEM + if (strlen(str) && (str[strlen(str)-1] != '/') && (str[strlen(str)-1] != '\\')) + { + strcat(str,"/"); + } +#endif + } + else + { + strcpy(str, ""); + } + + if(strcmp(relfil, "")==0) + { + /*Get the built in index of this library*/ + This=buildlibraryindex_SdccLib(lbnh->libspc, libfp, str, This); + break; /*get the index for next library*/ + } + + /*From here down, build the index for the original library format*/ + + if (relfil[0] == '\\') + { + strcat(str,relfil+1); + } + else + { + strcat(str,relfil); + } + + if(strchr(relfil, FSEPX) == NULL) + { + sprintf(&str[strlen(str)], "%crel", FSEPX); + } + + if ((fp = fopen(str, "r")) != NULL) + { + /* Opened OK - create a new libraryfile object for it */ + if(libr==NULL) + { + libr=This=(pmlibraryfile)new( sizeof( mlibraryfile )); + } + else + { + This->next=(pmlibraryfile)new( sizeof( mlibraryfile )); + This=This->next; + } + This->next = NULL; + This->loaded=-1; + This->offset=-1; /*We have a stand alone .rel file*/ + This->libspc = lbnh->libspc; + + This->relfil=(char *)new(strlen(relfil)+1); + strcpy(This->relfil, relfil); + + This->filename=(char *)new(strlen(str)+1); + strcpy(This->filename, str); + + /*Start a new linked list of symbols for this module:*/ + This->symbols=ThisSym=NULL; + + /* + * Read in the object file. Look for lines that + * begin with "S" and end with "D". These are + * symbol table definitions. If we find one, see + * if it is our symbol. Make sure we only read in + * our object file and don't go into the next one. + */ + + while (fgets(buf, NINPUT, fp) != NULL) + { + buf[NINPUT+1] = '\0'; + buf[strlen(buf) - 1] = '\0'; + + /* + * Skip everything that's not a symbol record. + */ + if (buf[0] != 'S') continue; + + /* + * When a 'T line' is found terminate file scan. + * All 'S line's preceed 'T line's in .REL files. + */ + if (buf[0] == 'T') break; + + sscanf(buf, "S %s %c", symname, &c); + + /* If it's an actual symbol, record it */ + if (c == 'D') + { + if(ThisSym==NULL) + { + ThisSym=This->symbols=(pmlibrarysymbol)new(sizeof(mlibrarysymbol)); + } + else + { + ThisSym->next=(pmlibrarysymbol)new(sizeof(mlibrarysymbol)); + ThisSym=ThisSym->next; + } + This->loaded=0; + ThisSym->next=NULL; + ThisSym->name=(char *)new(strlen(symname)+1); + strcpy(ThisSym->name, symname); + } + } /* Closes while - read object file */ + fclose(fp); + } /* Closes if object file opened OK */ + else + { + fprintf(stderr, "?Aslink-Warning-Cannot open library module %s\n", str); + } + } /* Ends while - processing all in libr */ + fclose(libfp); + } /* Ends good open of libr file */ + return 0; +} + +/*Release all memory allocated for the in-memory library index*/ +void freelibraryindex (void) +{ + pmlibraryfile ThisLibr, ThisLibr2Free; + pmlibrarysymbol ThisSym, ThisSym2Free; + + ThisLibr = libr; + + while (ThisLibr) + { + ThisSym = ThisLibr->symbols; + + while (ThisSym) + { + free(ThisSym->name); + ThisSym2Free=ThisSym; + ThisSym=ThisSym->next; + free(ThisSym2Free); + } + free(ThisLibr->filename); + free(ThisLibr->relfil); + ThisLibr2Free=ThisLibr; + ThisLibr=ThisLibr->next; + free(ThisLibr2Free); + } + + libr=NULL; +} + +#else /* INDEXLIB */ + +int +fndsym(name) +char *name; +{ + FILE *libfp, *fp; + struct lbname *lbnh; + struct lbfile *lbfh, *lbf; + char relfil[NINPUT+2]; + char buf[NINPUT+2]; + char symname[NINPUT]; + char *path,*str; + char c; + int result; + + /* + * Search through every library in the linked list "lbnhead". + */ + + for (lbnh=lbnhead; lbnh; lbnh=lbnh->next) + { + if ((libfp = fopen(lbnh->libspc, "r")) == NULL) + { + fprintf(stderr, "?Aslink-Error-Cannot open library file %s\n", + lbnh->libspc); + lkexit(1); + } + path = lbnh->path; + + /* + * Read in a line from the library file. + * This is the relative file specification + * for a .REL file in this library. + */ + + while (fgets(relfil, NINPUT, libfp) != NULL) + { + relfil[NINPUT+1] = '\0'; + chop_crlf(relfil); + if (path != NULL) + { + str = (char *) new (strlen(path)+strlen(relfil)+6); + strcpy(str,path); +#ifdef OTHERSYSTEM + if (strlen(str) && (str[strlen(str)-1] != '/') && (str[strlen(str)-1] != '\\')) + { + strcat(str,"/"); + } +#endif + } + else + { + str = (char *) new (strlen(relfil) + 5); + } + + if(strcmp(relfil, "")==0) + { + result=SdccLib(lbnh->libspc, libfp, str, name); + 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*/ + if (relfil[0] == '\\') + { + strcat(str,relfil+1); + } + else + { + strcat(str,relfil); + } + + if(strchr(relfil, FSEPX) == NULL) + { + sprintf(&str[strlen(str)], "%crel", FSEPX); + } + + if ((fp = fopen(str, "r")) != NULL) + { + + /* + * Read in the object file. Look for lines that + * begin with "S" and end with "D". These are + * symbol table definitions. If we find one, see + * if it is our symbol. Make sure we only read in + * our object file and don't go into the next one. + */ + + while (fgets(buf, NINPUT, fp) != NULL) + { + buf[NINPUT+1] = '\0'; + chop_crlf(buf); + /* + * Skip everything that's not a symbol record. + */ + if (buf[0] != 'S') continue; + + /* + * When a 'T line' is found terminate file scan. + * All 'S line's preceed 'T line's in .REL files. + */ + if (buf[0] == 'T') break; + + sscanf(buf, "S %s %c", symname, &c); + + /* + * If we find a symbol definition for the + * symbol we're looking for, load in the + * file and add it to lbfhead so it gets + * loaded on pass number 2. + */ + if (strncmp(symname, name, NCPS) == 0 && c == 'D') + { + 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 = 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); + + /* if cdb information required & adb file present */ + if (dflag && dfp) + { + FILE *xfp = afile(str,"adb",0); //JCF: Nov 30, 2002 + if (xfp) + { + SaveLinkedFilePath(str); + copyfile(dfp,xfp); + fclose(xfp); + } + } + loadfile(str); + return (1); + } + } + fclose(fp); + } + free(str); + } + fclose(libfp); + } + return(0); +} + +#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(libspc, fp, module); + fclose(fp); + } +} + +/*)Function VOID library() + * + * The function library() links all the library object files + * contained in the lbfile structures. + * + * local variables: + * lbfile *lbfh pointer to lbfile structure + * + * global variables: + * lbfile *lbfhead pointer to first lbfile structure + * + * functions called: + * VOID loadfile lklibr.c + * + * side effects: + * Links all files contained in the lbfile structures. + */ + +VOID +library() +{ + struct lbfile *lbfh; + + 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); + } + } +#ifdef INDEXLIB + freelibraryindex(); +#endif +} + +/*)Function VOID loadfile(filspc) + * + * char *filspc library object file specification + * + * The function loadfile() links the library object module. + * + * local variables: + * FILE *fp file handle + * int i input line length + * char str[] file input line + * + * global variables: + * char *ip pointer to linker input string + * + * functions called: + * int fclose() c_library + * int fgets() c_library + * FILE * fopen() c_library + * VOID link_main() lkmain.c + * int strlen() c_library + * + * side effects: + * If file exists it is linked. + */ + +VOID +loadfile(filspc) +char *filspc; +{ + FILE *fp; + char str[NINPUT+2]; + + if ((fp = fopen(filspc,"r")) != NULL) { + while (fgets(str, NINPUT, fp) != NULL) { + str[NINPUT+1] = '\0'; + chop_crlf(str); + ip = str; + link_main(); + } + fclose(fp); + } +}