From: James Hammons Date: Mon, 26 Dec 2011 17:38:55 +0000 (+0000) Subject: Initial commit. X-Git-Tag: v1.7.1~51 X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?p=rln;a=commitdiff_plain;h=ef2a73f70f65ceffe7bf93f15e074289fd488175 Initial commit. --- ef2a73f70f65ceffe7bf93f15e074289fd488175 diff --git a/makefile b/makefile new file mode 100644 index 0000000..d49541a --- /dev/null +++ b/makefile @@ -0,0 +1,22 @@ +rm=/bin/rm -f +CC= cc +PROGNAME= rln +LIBS= + +CFLAGS= -g -I. -D__GCCUNIX__ + +SRCS = rln.c + +OBJS = rln.o + +.c.o: + $(rm) $@ + $(CC) $(CFLAGS) -c $*.c + +all: $(PROGNAME) + +$(PROGNAME) : $(OBJS) + $(CC) $(CFLAGS) -o $(PROGNAME) $(OBJS) $(LIBS) + +clean: + $(rm) $(OBJS) $(PROGNAME) core *~ diff --git a/rln.c b/rln.c new file mode 100644 index 0000000..f1d0b9b --- /dev/null +++ b/rln.c @@ -0,0 +1,2547 @@ +/////////////////////////////////////////////////////////////////////////////// +// RLN - Reboot's Linker for the Atari Jaguar Console System +// RLN.C - Application Code +// Copyright (C) 199x, Allan K. Pratt, 2011 Reboot & Friends + +#include "rln.h" + +unsigned errflag = 0; // Error flag, goes TRUE on error +unsigned waitflag = 0; // Wait for any keypress flag +unsigned versflag = 0; // Version banner has been shown flag +unsigned aflag = 0; // Absolute linking flag +unsigned bflag = 0; // Don't remove mulitply def locals flag +unsigned cflag = 0; // COF executable +unsigned dflag = 0; // Wait for key after link flag +unsigned gflag = 0; // Source level debug include flag +unsigned lflag = 0; // Add local symbols to output flag +unsigned mflag = 0; // Produce symbol load map flag +unsigned oflag = 0; // Output filename specified +unsigned rflag = 0; // Segment alignment size flag +unsigned sflag = 0; // Output only global symbols +unsigned vflag = 0; // Verbose flag +unsigned zflag = 0; // Suppress banner flag +unsigned pflag, uflag, wflag; // Unimplemented flags +unsigned hd = 0; // Index of next file handle to fill +unsigned secalign = 7; // Section Alignment (8=phrase) +unsigned tbase = 0; // TEXT base address +unsigned dbase = 0; // DATA base address +unsigned bbase = 0; // BSS base address +unsigned textoffset = 0; // COF TEXT segment offset +unsigned dataoffset = 0; // COF DATA segment offset +unsigned bssoffset = 0; // COF BSS segment offset +unsigned displaybanner = 1; // Display version banner +unsigned symoffset = 0; // Symbol table offset in output file +unsigned dosymi = 0; // Dosym() processing iterator +unsigned dbgsymbase = 0; // Debug symbol base address +//unsigned symtrunc = 0; // Symbol truncation -i and -ii +int noheaderflag = 0; // No header flag for ABS files +int hflags; // Value of the arg to -h option +int ttype, dtype, btype; // Type flag: 0, -1, -2, -3, -4 +int tval, dval, bval; // Values of these abs bases +int hflag[NHANDLES]; // True for include files +int handle[NHANDLES]; // Open file handles +int textsize, datasize, bsssize; // Cumulative segment sizes +char libdir[FARGSIZE * 3]; // Library directory to search +char ofile[FARGSIZE]; // Output file name (.o) +char * name[NHANDLES]; // Associated file names +char * cmdlnexec = NULL; // Executable name - pointer to ARGV[0] +char * hsym1[SYMLEN]; // First symbol for include files +char * hsym2[SYMLEN]; // Second symbol for include files +struct OFILE * plist = NULL; // Object image list pointer +struct OFILE * plast; // Last object image list pointer +struct OFILE * olist = NULL; // Pointer to first object file in list +struct OFILE * olast; // Pointer to last object file in list +char obj_fname[512][FNLEN]; // Object file names +unsigned obj_segsize[512][3]; // Object file seg sizes; TEXT,DATA,BSS +unsigned obj_index = 0; // Object file index/count +struct HREC * htable[NBUCKETS]; // Hash table +struct HREC * unresolved = NULL; // Pointer to unresolved hash list +struct HREC * lookup(char *); // Hash lookup +char * ost; // Output symbol table +char * ost_ptr; // Output symbol table; current pointer +char * ost_end; // Output symbol table; end pointer +char * oststr; // Output string table +char * oststr_ptr; // Output string table; current pointer +char * oststr_end; // Output string table; end pointer +int ost_index = 0; // Index of next ost addition +int endian; // Processor endianess + + +// +// --- Get a Long Word from Memory -------------------------------------------- +// +unsigned getlong(char * src) +{ + unsigned temp; + char * out; + + out = (char *)&temp; + + if (endian == 1) + { + *out++ = src[0]; + *out++ = src[1]; + *out++ = src[2]; + *out = src[3]; + } + else + { + *out++ = src[3]; + *out++ = src[2]; + *out++ = src[1]; + *out = src[0]; + } + + return temp; +} + + +// +// --- Put a Long Word into Memory -------------------------------------------- +// +void putlong(char * dest, unsigned val) +{ + *dest++ = (char)(val >> 24); + *dest++ = (char)(val >> 16); + *dest++ = (char)(val >> 8); + *dest = (char)val; +} + + +// +// --- Get a Word from Memory ------------------------------------------------- +// +int getword(char * src) +{ + unsigned temp; + char * out; + + out = (char *)&temp; + *out++ = src[1]; + *out++ = src[0]; + *out++ = 0; + *out = 0; + + return temp; +} + + +// +// --- Put a Word into Memory ------------------------------------------------- +// +void putword(char * dest, int val) +{ + *dest++ = (char)(val >> 8); + *dest = (char)val; +} + + +// +// --- Obtain a File's Size --------------------------------------------------- +// +long FSIZE(int fd) +{ + unsigned temp, hold; + + temp = lseek(fd, 0L, SEEK_CUR); + hold = lseek(fd, 0L, SEEK_END); + lseek(fd, 0L, SEEK_SET); + + return hold; +} + + +// ---------------------------------------------------------------------------- +// For this object file, add symbols to the output symbol table after +// relocating them. Returns TRUE if ost_lookup returns an error (-1). +// ---------------------------------------------------------------------------- +int dosym(struct OFILE * ofile) +{ + char * symptr; // Symbol pointer + char * symend; // Symbol end pointer + int type; // Symbol type + long value; // Symbol value + int index; // Symbol index + int j; // Iterator + int ssidx; // Segment size table index + unsigned tsegoffset; // Cumulative TEXT segment offset + unsigned dsegoffset; // Cumulative DATA segment offset + unsigned bsegoffset; // Cumulative BSS segment offset + struct HREC * hptr; // Hash table pointer for globl/extrn + char sym[SYMLEN]; // String for symbol name/hash search + + // Point to first symbol record in the object file + symptr = (ofile->o_image + 32 + + ofile->o_header.tsize + + ofile->o_header.dsize + + ofile->o_header.absrel.reloc.tsize + + ofile->o_header.absrel.reloc.dsize); + + // Point to end of symbol record in the object file + symend = symptr + ofile->o_header.ssize; + + // Search through object segment size table to accumulated segment sizes to ensure + // the correct offsets are used in the resulting COF file. + ssidx = -1; // Initialise segment index + tsegoffset = dsegoffset = bsegoffset = 0; // Initialise segment offsets + + for(j=0; j<(int)obj_index; j++) + { // Search for object file name + if (!strcmp(ofile->o_name, obj_fname[j])) + { + ssidx = j; // Object file name found + break; + } + + tsegoffset += obj_segsize[j][0]; // Accumulate segment sizes + dsegoffset += obj_segsize[j][1]; + bsegoffset += obj_segsize[j][2]; + } + + if (ssidx == -1) + { + printf("dosym() : Cannot get object file segment size : %s\n", ofile->o_name); + return(1); + } + + // Process each record in the symbol table + for(; symptr!=symend ; symptr+=12) + { + index = getlong(symptr + 0); // Obtain symbol string index + type = getlong(symptr + 4); // Obtain symbol type + value = getlong(symptr + 8); // Obtain symbol value + + // Global/External symbols have a pre-processing stage + if (type & 0x01000000) + { + // Obtain the string table index for the relocation symbol, look for it in the globals + // hash table to obtain information on that symbol. For the hash calculation to work + // correctly it must be placed in a 'clean' string before looking it up. + memset(sym, 0, SYMLEN); + strcpy(sym, symend + index); + hptr = lookup(sym); + + if (hptr == NULL) + { + printf("dosym() : Cannot determine symbol : %s\n", sym); + return 1; + } + + // Search through object segment size table to obtain segment sizes for the object + // that has the required external/global as a local symbol. As each object is + // interrogated the segment sizes are accumulated to ensure the correct offsets are + // used in the resulting COF file. This is effectively 'done again' only as we + // are working with a different object file. + ssidx = -1; // Initialise segment index + tsegoffset = dsegoffset = bsegoffset = 0; // Initialise segment offsets + + for(j=0; j<(int)obj_index; j++) + { // Search for object filename + if (!strcmp((const char *)hptr->h_ofile, obj_fname[j])) + { + ssidx = j; // Symbol object filename + break; + } + + tsegoffset += obj_segsize[j][0]; // Accumulate segment sizes + dsegoffset += obj_segsize[j][1]; + bsegoffset += obj_segsize[j][2]; + } + + if (ssidx == -1) + { + printf("dosym() : Cannot get object file segment size : %s\n", + ofile->o_name); + return 1; + } + + type = hptr->h_type; // Update type with global type + + if (type == 0x03000000) + type = 0x02000000; // Reset external flag if absolute + + // If the global/external has a value then update that vaule in accordance with the + // segment sizes of the object file it originates from + if (hptr->h_value) + { + switch (hptr->h_type & 0x0E000000) + { + case 0x02000000: // Absolute value + case 0x04000000: // TEXT segment + value = hptr->h_value; + break; + case 0x06000000: // DATA segment + value = hptr->h_value - (hptr->h_ofile->o_header.tsize); + break; + case 0x08000000: // BSS segment + value = hptr->h_value - + (hptr->h_ofile->o_header.tsize + hptr->h_ofile->o_header.dsize); + break; + } + } + } + + // Process and update the value dependant on whether the symbol is a debug symbol or not + if (type & 0xF0000000) + { // DEBUG SYMBOL + // Set the correct debug symbol base address (TEXT segment) + dbgsymbase = 0; + + for(j=0; (unsigned)jo_header.tsize); + putlong(symptr + 8, value); + break; + case T_BSS: // BSS segment + if(type & 0x01000000) value = bbase + bsegoffset + value; + else value = bbase + bsegoffset + + (value - (ofile->o_header.tsize + ofile->o_header.dsize)); + putlong(symptr + 8, value); + break; + default: + break; + } + } + + // Add to output symbol table + if (lflag || !islocal(type)) + { + if (islocal(type) || isglobal(type)) + { + if ((index = ost_add(symend + index, type, value)) == -1) + return(1); + } + else + { + // Belongs in OST, but don't look it up yet + index = -1; + } + } + } + + dosymi++; // Increment dosym() processsing + return 0; +} + + +// +// --- Free Up Hash Records --------------------------------------------------- +// +void hash_free(void) +{ + int i; + struct HREC *htemp, *hptr; + + for(i = 0; i < NBUCKETS; i++) { + hptr = htable[i]; + while(hptr) { + htemp = hptr->h_next; + free(hptr); + hptr = htemp; + } + } +} + +// +// --- Add all Global and External Symbols to the Output Symbol Table ------------------------------ +// + +long docommon(void) { + struct HREC *hptr; // Hash record pointer + int i; // Iterator + + for(i = 0; i < NBUCKETS; i++) { + for(hptr = htable[i]; hptr != NULL; hptr = hptr->h_next) { + if(iscommon(hptr->h_type)) { + if(hptr->h_type == 0x03000000) + hptr->h_type = 0x02000000; // Absolutes can't be externals + if(ost_add(hptr->h_sym, hptr->h_type, hptr->h_value) == -1) { + return(-1); + } + } + } + } + + return(0); +} + +// ------------------------------------------------------------------------------------------------- +// Add a Symbol's Name, Type, and Value to the OST. +// Return the Index of the Symbol in OST, or -1 for Error. +// ------------------------------------------------------------------------------------------------- + +int ost_add(char *name, int type, long value) { + int ost_offset_p, ost_offset_e = 0; // OST table offsets for position calcs + int slen = 0; // Symbol string length + int ostresult; // OST index result + + slen = strlen(name); + + // If the OST or OST String Table has not been initialised then do so + if(ost_index == 0) { + if((ost = malloc(OST_BLOCK)) == NULL) { + printf("OST memory allocation error (stringtable).\n"); + return(-1); + } + ost_ptr = ost; // Set OST start pointer + ost_end = ost + OST_BLOCK; // Set OST end pointer + if((oststr = malloc(OST_BLOCK)) == NULL) { + printf("OST memory allocation error (string).\n"); + return(-1); + } + putlong(oststr, 0x00000004); // Just null long for now + oststr_ptr = oststr + 4; // Skip size of str table long (incl null long) + putlong(oststr_ptr, 0x00000000); // Null terminating long + oststr_end = oststr + OST_BLOCK; + } else { + // If next symbol record exceeds current allocation then expand symbol table. + ost_offset_p = (ost_ptr - ost); + ost_offset_e = (ost_end - ost); + if((ost_ptr + 12) > ost_end) { // 3 x int (12) + if((ost = realloc(ost, (unsigned)(ost_end + OST_BLOCK))) == NULL) { + printf("OST memory reallocation error.\n"); + return(-1); + } + ost_ptr = ost + ost_offset_p; + ost_end = (ost + ost_offset_e) + OST_BLOCK; + } + ost_offset_p = (oststr_ptr - oststr); + ost_offset_e = (oststr_end - oststr); + if((oststr_ptr + (slen+1+4)) > oststr_end) { + if((oststr = realloc(oststr, (unsigned)(oststr_end + OST_BLOCK))) == NULL) { + printf("OSTSTR memory reallocation error.\n"); + return(-1); + } + oststr_ptr = oststr + ost_offset_p; + oststr_end = (oststr + ost_offset_e) + OST_BLOCK; + } + } + + // If this is a debug symbol and the include debug symbol flag (-g) is not set then do nothing + if((type & 0xF0000000) && !gflag) { + // Do nothing + } else { + ostresult = ost_lookup(name); // Get symbol index in OST + // If the symbol is in the output symbol table and the bflag is set (don't remove multiply + // defined locals) and this is not an external/global symbol *** OR *** the symbol is not + // in the output symbol table then add it. + if(((ostresult != -1) && bflag && !(type & 0x01000000)) || + ((ostresult != -1) && gflag && (type & 0xF0000000)) || (ostresult == -1)) { + if((type & 0xF0000000) == 0x40000000) + putlong(ost_ptr, 0x00000000); // Zero string table offset for dbg line + else + putlong(ost_ptr, (oststr_ptr - oststr)); // String table offset of symbol string + putlong(ost_ptr + 4, type ); + putlong(ost_ptr + 8, value); + ost_ptr += 12; + // If the symbol type is anything but a debug line information symbol then write + // the symbol string to the string table + if((type & 0xF0000000) != 0x40000000) { + strcpy(oststr_ptr, name); // Put symbol name in string table + *(oststr_ptr + slen) = '\0'; // Add null terminating character + oststr_ptr += (slen + 1); + putlong(oststr_ptr, 0x00000000); // Null terminating long + putlong(oststr, (oststr_ptr - oststr)); // Update size of string table + } + return(ost_index++); // Return OST index + } + } + + return(0); // not sure about this as it could affect return indices. needed to stop return error. +} + +// +// --- Return the Index of a Symbol in the Output Symbol Table ------------------------------------- +// + +int ost_lookup(char *sym) { + int i; // Iterator + int stro = 4; // Offset in string table + + for(i = 0; i < ost_index; i++) { + if(!strcmp(oststr+stro, sym)) { + return(i+1); + } else { + stro += strlen(oststr+stro) + 1; + } + } + + return(-1); +} + +// +// --- Add Unresolved Externs to the Output Symbol Table ------------------------------------------- +// + +int dounresolved(void) { + struct HREC *hptr, *htemp; // Hash record pointers + + hptr = unresolved; // Point to unresolved symbols list + + while(hptr != NULL) { // While unresolved list is valid + if(ost_add(hptr->h_sym, T_EXT, 0L) == -1) return(1); + htemp = hptr->h_next; // Temporarily get ptr to next record + free(hptr); // Free current record + hptr = htemp; // Make next record ptr, current + } + + unresolved = NULL; // Zero unresolved record list + + return(0); +} + +// ------------------------------------------------------------------------------------------------- +// Update Object File TEXT and DATA Segments Based on Relocation Records. Take in an OFILE header +// and flag (T_TEXT, T_DATA) to process. Return (0) is successful or non-zero (1) if failed. +// ------------------------------------------------------------------------------------------------- + +int reloc_segment(struct OFILE *ofile, int flag) { + char *symtab; // Start of symbol table + char *symbols; // Start of symbols + char *sptr; // Start of segment data + char *rptr; // Start of segment relocation records + unsigned symidx; // Offset to symbol + unsigned addr; // Relocation address + unsigned rflg; // Relocation flags + unsigned olddata; // Old segment data at reloc address + unsigned newdata = 0; // New segment data at reloc address + unsigned pad; // Temporary to calculate phrase padding + int i; // Iterator + char sym[SYMLEN]; // String for symbol name/hash search + int ssidx; // Segment size table index + unsigned glblreloc; // Global relocation flag + unsigned absreloc; // Absolute relocation flag + unsigned relreloc; // Relative relocation flag + unsigned swcond; // Switch statement condition + unsigned relocsize; // Relocation record size + + // If there is no TEXT relocation data for the selected object file segment then update the COF + // TEXT segment offset allowing for the phrase padding + if((flag == T_TEXT) && !ofile->o_header.absrel.reloc.tsize) { + pad = ((ofile->o_header.tsize+secalign) & ~secalign); // TEXT segment size plus padding + textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize)); + if(vflag > 1) { // Verbose mode information + printf("reloc_segment(%s, TEXT) : No Relocation Data\n", ofile->o_name); + } + return(0); + } + + // If there is no DATA relocation data for the selected object file segment then update the COF + // DATA and BSS segment offsets allowing for the phrase padding + if((flag == T_DATA) && !ofile->o_header.absrel.reloc.dsize) { + pad = ((ofile->o_header.dsize+secalign) & ~secalign); // DATA segment size plus padding + dataoffset += (ofile->o_header.dsize + (pad - ofile->o_header.dsize)); + pad = ((ofile->o_header.bsize+secalign) & ~secalign); // BSS segment size plus padding + bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize)); + if(vflag > 1) { // Verbose mode information + printf("reloc_segment(%s, DATA) : No Relocation Data\n", ofile->o_name); + } + return(0); + } + + // Verbose mode information + if(vflag > 1) { + printf("reloc_segment(%s, %s) : Processing Relocation Data\n", + ofile->o_name, flag == T_DATA ? "DATA" : "TEXT"); + } + + // Obtain pointer to start of symbol table + symtab = (ofile->o_image + 32 + ofile->o_header.tsize + ofile->o_header.dsize + + ofile->o_header.absrel.reloc.tsize + ofile->o_header.absrel.reloc.dsize); + + // Obtain pointer to start of symbols + symbols = symtab + ofile->o_header.ssize; + + // Obtain pointer to start of TEXT segment + sptr = ofile->o_image + 32; + + // Obtain pointer to start of TEXT relocation records + rptr = sptr + (ofile->o_header.tsize + ofile->o_header.dsize); + + relocsize = ofile->o_header.absrel.reloc.tsize; + + // Update pointers if DATA relocation records are being processed + if(flag == T_DATA) { + sptr += ofile->o_header.tsize; // Start of DATA segment + rptr += ofile->o_header.absrel.reloc.tsize; // Start of DATA relocation records + relocsize = ofile->o_header.absrel.reloc.dsize; + } + + // Process each relocation record for the TEXT segment + for(i = 0; i < (int)relocsize; i += 8) { + // Obtain both the relocation address and the relocation flags from the object file image + addr = getlong(rptr); + rflg = getlong(rptr + 4); + glblreloc = (rflg & 0x00000010) ? 1 : 0; // Set global relocation flag + absreloc = (rflg & 0x00000040) ? 1 : 0; // Set absolute relocation flag + relreloc = (rflg & 0x000000A0) ? 1 : 0; // Set relative relocation flag + + // Additional processing required for global relocations + if(glblreloc) { + // Obtain the string table index for the relocation symbol, look for it in the globals + // hash table to obtain information on that symbol. For the hash calculation to work + // correctly it must be placed in a 'clean' string before looking it up. + symidx = getlong(symtab + ((rflg >> 8) * 12)); + memset(sym, 0, SYMLEN); + strcpy(sym, symbols + symidx); + olddata = newdata = 0; // Initialise old and new segment data + ssidx = ost_lookup(sym); + newdata = getlong(ost + ((ssidx-1) * 12) + 8); + } + + // Obtain the existing long word segment data and flip words if the relocation flags + // indicate it relates to a RISC MOVEI instruction + olddata = getlong(sptr + addr); + if(rflg & 0x01) olddata = _SWAPWORD(olddata); + + // Process record dependant on segment it relates to; TEXT, DATA or BSS. Construct a new + // relocated segment long word based on the required segment base address, the segment + // data offset in the resulting COF file and the offsets from the incoming object file. + //swcond = glblreloc ? ((hptr->h_type & 0x0E000000) >> 16) : (rflg & 0xFFFFFF00); + swcond = (rflg & 0xFFFFFF00); + if(!glblreloc) { + switch(swcond) { + case 0x00000200: // Absolute Value + break; + case 0x00000400: // TEXT segment relocation record + if(!glblreloc) + if(flag == T_TEXT) newdata = tbase + textoffset + olddata; + else newdata = tbase + dataoffset + olddata; + break; + case 0x00000600: // DATA segment relocation record + if(!glblreloc) newdata = dbase + dataoffset + (olddata - ofile->o_header.tsize); + break; + case 0x00000800: // BSS segment relocation record + if(!glblreloc) newdata = bbase + bssoffset + + (olddata - (ofile->o_header.tsize + ofile->o_header.dsize)); + break; + } + } else { + if (!relreloc) newdata += olddata; + } + // Set absolute (long) or relative (word) address of symbol + if (absreloc) { + // Flip the new long word segment data if the relocation record indicated a RISC MOVEI + // instruction and place the resulting data back in the COF segment + if(rflg & 0x01) newdata = _SWAPWORD(newdata); + + putlong(sptr + addr, newdata); + + } + else if (relreloc) { + putword(sptr + addr, newdata - tbase - addr - ofile->o_tbase); + } + + rptr += 8; // Point to the next relocation record + } + + // Update the COF segment offset allowing for the phrase padding. + if(flag == T_TEXT) { + pad = ((ofile->o_header.tsize+secalign) & ~secalign); // TEXT segment plus padding + textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize)); + } else { + pad = ((ofile->o_header.dsize+secalign) & ~secalign); // DATA segment plus padding + dataoffset += (ofile->o_header.dsize + (pad - ofile->o_header.dsize)); + pad = ((ofile->o_header.bsize+secalign) & ~secalign); // BSS segment plus padding + bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize)); + } + + return(0); // Return value, should always be zero +} + +// +// ------------------------------------------------------------------------------------------------- +// Add a path character to the end of string 's' if it doesn't already end with one. +// The last occurrance of '/' or '\\' in the string is assumed to be the path character. +// ------------------------------------------------------------------------------------------------- +// + +void pathadd(char *s) { + char pathchar = 0; + + while(*s) { + if(*s == '/' || *s == '\\') pathchar = *s; + s++; + } + s--; + if(*s == pathchar) return; + + *++s = pathchar; + *++s = 0; +} + +// +// ------------------------------------------------------------------------------------------------- +// Try to open "name", "name.o", "${libdir}name", "${libdir}name.o". Return the handle of the file +// successfully opened. p_name is updated to point to a malloc()'ed string which is the name which +// actually got opened. p_name will return unchanged if the file can't be found. +// ------------------------------------------------------------------------------------------------- +// + +int tryopen(char **p_name) { + char *name = *p_name; // Filename + char *tmpbuf, *lastdot; // Buffer and 'dot' pointers + int fd, hasdot; // File descriptor and 'has dot' flag + + // Note that libdir will be an empty string if there is none specified + if((tmpbuf = malloc((long)strlen(name) + strlen(libdir) + 3)) == NULL) { + printf("tryopen() : out of memory\n"); + return(-1); + } + strcpy(tmpbuf, name); + + hasdot = ((lastdot = strrchr(tmpbuf, '.')) > strrchr(tmpbuf, '/')) && + (lastdot > strrchr(tmpbuf, '\\')); + + if((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0) goto ok; // Try to open file as passed first + if(!hasdot) { + strcat(tmpbuf, ".o"); // Try to open file with '.o' added + if((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0) goto ok; + } + + // Try the libdir only if the name isn't already anchored + if(*name != '/' && *name != '\\' && !strchr(name, ':')) { + strcpy(tmpbuf,libdir); + // Add a trailing path char if there isn't one already + pathadd(tmpbuf); + strcat(tmpbuf, name); + if((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0) goto ok; + if(!hasdot) { + strcat(tmpbuf, ".o"); + if((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0) goto ok; + } + } + + return(-1); // Couldn't open file at all + + ok: // What more Atari label use - sigh!!! + + if((tmpbuf = realloc(tmpbuf, (long)strlen(tmpbuf) + 1)) == NULL) { + printf("tryopen() : out of memory\n"); + return(-1); + } + *p_name = tmpbuf; + + return(fd); // Return file descriptor +} + +// +// --- Archive File Use, Needs to be Removed ------------------------------------------------------- +// + +void put_name(struct OFILE *p) { + int flag = *(p->o_arname); + printf("%s%s%s", flag ? p->o_arname : "", flag ? ":" : "", p->o_name); +} + +// +// ------------------------------------------------------------------------------------------------- +// Collect file names and handles in a buffer so there is less disk activity. +// Call dofile with flag FALSE for normal object files and archives. +// Call it with flag TRUE and a symbol name for include files (-i). +// ------------------------------------------------------------------------------------------------- +// + +int dofile(char *fname, int flag, char *sym) { + int fd; // File descriptor + int temp; // Temporary storage + + if(vflag) { // Verbose information + printf("dofile() : `%s' %s", fname, flag ? "INCLUDE" : "NORMAL"); + if(flag) printf(" symbol %s", sym); + printf("\n"); + } + + if(hd == NHANDLES) { // Reached maximum file handles + if(flush_handles()) return(1); + } + + if((fd = tryopen(&fname)) < 0) { // Attempt to open input file + printf("Cannot find input module %s\n", fname); + return(1); + } + + // The file is open; save its info in the handle and name arrays + handle[hd] = fd; + name[hd] = fname; // This is the name from tryopen() + hflag[hd] = flag; + + if(flag) { // Include files + temp = strlen(sym); // Get symbol length + if(temp > 99) { // 100 chars is max length of a symbol + sym[99] = '\0'; + temp = 99; + } + + // Malloc enough space for two symbols, then build the second one. Second one may be one + // character longer than first + if((hsym1[hd] = malloc((long)temp + 1)) == NULL || + (hsym2[hd] = malloc((long)temp + 2)) == NULL) { + printf("dofile() : out of memory for include-file symbols\n"); + return(1); + } + strcpy(hsym1[hd], sym); + strcpy(hsym2[hd], sym); + + if(temp == 99) { + if(sym[99] == 'x') { + printf("Last char of %s is already 'x': choose another name\n", sym); + return(1); + } + hsym2[hd][99] = 'x'; + } else { + hsym2[hd][temp] = 'x'; + hsym2[hd][temp+1] = '\0'; + } + } + + hd++; // Increment next handle index + + return(0); // No problems +} + + +// +// --- Pad TEXT or DATA Segment to the Requested Boundary --------------------- +// +int segmentpad(FILE * fd, long segsize, int value) +{ + long padsize; // Number of pad bytes needed + int i; // Good 'ol iterator + char padarray[32]; // Array of padding bytes + char * padptr; // Pointer to array + + // Determine the number of padding bytes that are needed + padsize = (segsize + secalign) & ~secalign; + padsize = padsize - segsize; + + // Fill pad array if padding is required + if (padsize) + { + padptr = padarray; + + for(i=0; i<16; i++) + { + putword(padptr, value); + padptr += 2; + } + + symoffset += padsize; + + if (fwrite(padarray, padsize, 1, fd) != 1) // Write padding bytes + return 1; + } + + return 0; // All done +} + + +// +// --- Write the Output File -------------------------------------------------- +// +int write_ofile(struct OHEADER * header) +{ + FILE *fd; // File descriptor + unsigned osize; // Object segment size + struct OFILE *otemp; // Object file pointer + int i, j; // Iterators + char himage[0x168]; // Header image (COF = 0xA8) + unsigned tsoff, dsoff, bsoff; // Segment offset values + unsigned index, type, value; // Symbol table index, type and value + short abstype; // ABS symbol type + char symbol[14]; // Symbol record for ABS files + int slen; // Symbol string length + + symoffset = 0; // Initialise symbol offset + + if(strchr(ofile, '.') == NULL) { // Add correct output extension if none + if(aflag && cflag) strcat(ofile, ".cof"); // COF files + else if(aflag && !cflag) strcat(ofile, ".abs"); // ABS files + else strcat(ofile, ".o"); // Object files (partial linking etc) + } + + fd = fopen(ofile, "wb"); // Attempt to open output file + if(!fd) { + printf("Can't open output file %s\n", ofile); // Error opening output file + return 1; + } + + // Build the output file header + if(cflag) { // Absolute (COF) header + tsoff = dsoff = bsoff = 0xA8; // Initialises segment offsets + + // Process each object file segment size to obtain a cumulative segment size for both + // the TEXT and DATA segments + for(i = 0; i < (int)obj_index; i++) { + dsoff += obj_segsize[i][0]; // Adding TEXT segment sizes + bsoff += obj_segsize[i][0] + obj_segsize[i][1]; // Adding TEXT and DATA segment sizes + } + + // Currently this only builds a COF absolute file. Conditionals and additional code will + // need to be added for ABS and partial linking. + + // Build the COF_HDR + putword(himage + 0, 0x0150 ); // Magic Number (0x0150) + putword(himage + 2, 0x0003 ); // Sections Number (3) + putlong(himage + 4, 0x00000000 ); // Date (0L) + putlong(himage + 8, dsoff + header->dsize); // Offset to Symbols Section + putlong(himage + 12, ost_index); // Number of Symbols + putword(himage + 16, 0x001C ); // Size of RUN_HDR (0x1C) + putword(himage + 18, 0x0003 ); // Executable Flags (3) + + // Build the RUN_HDR + putlong(himage + 20, 0x00000107 ); // Magic/vstamp + putlong(himage + 24, header->tsize ); // TEXT size in bytes + putlong(himage + 28, header->dsize ); // DATA size in bytes + putlong(himage + 32, header->bsize ); // BSS size in bytes + putlong(himage + 36, tbase ); // Start of executable, normally @TEXT + putlong(himage + 40, tbase ); // @TEXT + putlong(himage + 44, dbase ); // @DATA + + // Build the TEXT SEC_HDR + putlong(himage + 48, 0x2E746578 ); + putlong(himage + 52, 0x74000000 ); // ".text" + putlong(himage + 56, tbase ); // TEXT START + putlong(himage + 60, tbase ); // TEXT START + putlong(himage + 64, header->tsize ); // TEXT size in bytes + putlong(himage + 68, tsoff ); // Offset to section data in file + putlong(himage + 72, 0x00000000 ); // Offset to section reloc in file (0L) + putlong(himage + 76, 0x00000000 ); // Offset to debug lines structures (0L) + putlong(himage + 80, 0x00000000 ); // Nreloc/nlnno (0L) + putlong(himage + 84, 0x00000020 ); // SEC_FLAGS: STYP_TEXT + + // Build the DATA SEC_HDR + putlong(himage + 88, 0x2E646174 ); + putlong(himage + 92, 0x61000000 ); // ".data" + putlong(himage + 96, dbase ); // DATA START + putlong(himage + 100, dbase ); // DATA START + putlong(himage + 104, header->dsize ); // DATA size in bytes + putlong(himage + 108, dsoff ); // Offset to section data in file + putlong(himage + 112, 0x00000000 ); // Offset to section reloc in file (0L) + putlong(himage + 116, 0x00000000 ); // Offset to debugging lines structures (0L) + putlong(himage + 120, 0x00000000 ); // Nreloc/nlnno (0L) + putlong(himage + 124, 0x00000040 ); // SEC_FLAGS: STYP_DATA + + // Build the BSS SEC_HDR + putlong(himage + 128, 0x2E627373 ); + putlong(himage + 132, 0x00000000 ); // ".bss" + putlong(himage + 136, bbase ); // BSS START + putlong(himage + 140, bbase ); // BSS START + putlong(himage + 144, header->bsize ); // BSS size in bytes + putlong(himage + 148, bsoff ); // Offset to section data in file + putlong(himage + 152, 0x00000000 ); // Offset to section reloc in file (0L) + putlong(himage + 156, 0x00000000 ); // Offset to debugging lines structures (0L) + putlong(himage + 160, 0x00000000 ); // Nreloc/nlnno (0L) + putlong(himage + 164, 0x00000080 ); // SEC_FLAGS: STYP_BSS + + symoffset = 168; // Update symbol offset + } else { // Absolute (ABS) header + // Build the ABS header + putword(himage + 0, 0x601B ); // Magic Number (0x601B) + putlong(himage + 2, header->tsize ); // TEXT segment size + putlong(himage + 6, header->dsize ); // DATA segment size + putlong(himage + 10, header->bsize ); // BSS segment size + putlong(himage + 14, ost_index * 14 ); // Symbol table size (?) + putlong(himage + 18, 0x00000000 ); // + putlong(himage + 22, tbase ); // TEXT base address + putword(himage + 26, 0xFFFF ); // Flags (?) + putlong(himage + 28, dbase ); // DATA base address + putlong(himage + 32, bbase ); // BSS base address + + symoffset = 36; // Update symbol offset + } + + // Write the header, but not if noheaderflag + if(!cflag) { // Absolute (ABS) header + if(!noheaderflag) + if(fwrite(himage, 36, 1, fd) != 1) + goto werror; + } else { // Absolute (COF) header + if(fwrite(himage, 168, 1, fd) != 1) + goto werror; + } + + // Write the TEXT segment of each object file + for(otemp = olist; otemp != NULL; otemp = otemp->o_next) { + osize = otemp->o_header.tsize; + if(osize) { // Write only if segment has size + if(vflag > 1) + printf("Writing TEXT Segment of %s\n", otemp->o_name); + if(fwrite(otemp->o_image + 32, osize, 1, fd) != 1) + goto werror; + // Pad to required alignment boundary + if(segmentpad(fd, osize, 0x0000)) + goto werror; + symoffset += osize; + } + } + + // Write the DATA segment of each object file + for(otemp = olist; otemp != NULL; otemp = otemp->o_next) { + osize = otemp->o_header.dsize; + if(osize) { // Write only if the segment has size + if(vflag > 1) + printf("Writing DATA Segment of %s\n", otemp->o_name); + if(fwrite((otemp->o_image + 32 + otemp->o_header.tsize), osize, 1, fd) != 1) goto werror; + // Pad to required alignment boundary + if(segmentpad(fd, osize, 0)) + goto werror; + symoffset += osize; + } + } + +if(!noheaderflag) { + + // Write the symbols table and string table + if(cflag) { // Absolute (COF) symbol/string table + if(header->ssize) { + if(fwrite(ost, (ost_ptr - ost), 1, fd) != 1) goto werror; + if(fwrite(oststr, (oststr_ptr - oststr), 1, fd) != 1) goto werror; + } + } else { // Absolute (ABS) symbol/string table + // The symbol and string table have been created as part of the dosym() function and the + // output symbol and string tables are in COF format. For an ABS file we need to process + // through this to create the 14 character long combined symbol and string table. + // Format of symbol table in ABS: AAAAAAAATTVVVV, where (A)=STRING, (T)=TYPE & (V)=VALUE + + for(i = 0; i < ost_index; i++) { + memset(symbol, 0, 14); // Initialise symbol record + abstype = 0; // Initialise ABS symbol type + slen = 0; // Initialise symbol string length + index = getlong(ost + (i * 12)); // Get symbol index + type = getlong((ost + (i * 12)) + 4); // Get symbol type + if(type & 0xF0000000) continue; // Not doing debug symbols + value = getlong((ost + (i * 12)) + 8); // Get symbol value + slen = strlen(oststr + index); + if(slen > 8) { // Get symbol string (maximum 8 chars) + for(j = 0; j < 8; j++) *(symbol + j) = *(oststr + index + j); + } else { + for(j = 0; j < slen; j++) *(symbol + j) = *(oststr + index + j); + } + switch(type) { // Modify to ABS symbol type + case 0x02000000: abstype = (short)ABST_DEFINED; break; + case 0x04000000: abstype = (short)ABST_DEFINED | ABST_TEXT; break; + case 0x05000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_TEXT; break; + case 0x06000000: abstype = (short)ABST_DEFINED | ABST_DATA; break; + case 0x07000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_DATA; break; + case 0x08000000: abstype = (short)ABST_DEFINED | ABST_BSS; break; + case 0x09000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_BSS; break; + default: + printf("write_ofile: abs, cannot determine symbol type\n"); + type = 0; + break; + } + putword(symbol + 8, abstype); // Write back new ABS type + putlong(symbol + 10, value); // Write back value + if(fwrite(symbol, 14, 1, fd) != 1) goto werror; // Write symbol record + } + } + +} + + // Close the file + if(fclose(fd)) { + printf("Close error on output file %s\n",ofile); + return(1); + } else return(0); + + werror: // OMG! Why did Atari use these :) + + printf("Write error on output file %s\n", ofile); + fclose(fd); // Try to close output file anyway + return(1); +} + +// +// --- Display the Symbol Load Map ----------------------------------------------------------------- +// + +int write_map(struct OHEADER *header) { + unsigned i, o; // Inner and outer loop iterators + unsigned c; // Column number + unsigned index; // Symbol string index + unsigned type; // Symbol type + unsigned value; // Symbol value + char *symbol; // Symbol string value + + if(ost_index == 0) return(0); // Return if no symbols to map + + printf("LOAD MAP\n\n"); + + // Outer loop for each of the symbol areas to map out; + // 0 = NON-RELOCATABLE SYMBOLS + // 1 = TEXT-SEGMENT RELOCATABLE SYMBOLS + // 2 = DATA-SEGMENT RELOCATABLE SYMBOLS + // 3 = BSS-SEGMENT RELOCATABLE SYMBOLS + for(o = 0; o < 4; o++) { + // Display the correct map header for the symbols being processed + switch(o) { + case 0: printf("NON-RELOCATABLE SYMBOLS\n\n"); break; + case 1: printf("TEXT-SEGMENT RELOCATABLE SYMBOLS\n\n"); break; + case 2: printf("DATA-SEGMENT RELOCATABLE SYMBOLS\n\n"); break; + case 3: printf("BSS-SEGMENT RELOCATABLE SYMBOLS\n\n"); break; + } + + c = 0; // Initialise column number + + // Inner loop to process each record in the symbol table + for(i = 0; i < (unsigned)ost_index; i++) { + index = getlong(ost + (i * 12)); // Get symbol string index + type = getlong(ost + (i * 12) + 4); // Get symbol type + value = getlong(ost + (i * 12) + 8); // Get symbol value + symbol = oststr + index; // Get symbol string + + if(c == 3) { // Display only three columns + printf("\n"); + c = 0; + } + + // If local symbols not included and the type is local then go to next symbol record + if(!lflag & !(type & 0x01000000)) continue; + + // Output each symbol to the display, dependant on type + switch(o) { + case 0: // Non-relocatable symbols + if(type == 0x02000000 || type == 0x03000000) { + printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value); + c++; + } + break; + case 1: // TEXT segment relocatable symbols + if(type == 0x04000000 || type == 0x05000000) { + printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value); + c++; + } + break; + case 2: // DATA segment relocatble symbols + if(type == 0x06000000 || type == 0x07000000) { + printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value); + c++; + } + break; + case 3: // BSS segment relocatable symbols + if(type == 0x08000000 || type == 0x09000000) { + printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value); + c++; + } + break; + } + } + + printf("\n\n"); + } + + return(0); // All done +} + + +// +// --- Convert ASCII to Hexadecimal ------------------------------------------- +// +//int atolx(char * string, long * value) +int atolx(char * string, int * value) +{ + *value = 0; + + while (isxdigit(*string)) + { + if (isdigit(*string)) + { + *value = (*value << 4) + (*string++ - '0'); + } + else + { + if (isupper(*string)) + *string = tolower(*string); + + *value = (*value << 4) + ((*string++ - 'a') + 10); + } + } + + if (*string != '\0') + { + printf("Invalid hexadecimal value"); + return 1; + } + + return 0; +} + + +// +// ---------------------------------------------------------------------------- +// Stuff the (long) value of a string into the value argument. RETURNS TRUE if +// the string doesn't parse. Parses only as a hex string. +// ---------------------------------------------------------------------------- +// +//int getval(char * string, long * value) +int getval(char * string, int * value) +{ + return atolx(string, value); +} + + +// +// ---------------------------------------------------------------------------- +// Create one big .o file from the images already in memory, returning a +// pointer to an OHEADER. Note that the oheader is just the header for the +// output (plus some other information). The text, data, and fixups are all +// still in the ofile images hanging off the global `olist'. +// ---------------------------------------------------------------------------- +// +struct OHEADER * make_ofile() +{ + unsigned tptr, dptr, bptr; // Bases in runtime model + int ret = 0; // Return value + struct OFILE *otemp, *oprev, *ohold; // Object file list pointers + struct OHEADER *header; // Output header pointer + + textsize = datasize = bsssize = 0; // Initialise cumulative segment sizes + + // For each object file, accumulate the sizes of the segments but remove those + // object files which are unused + oprev = NULL; // Init previous obj file list ptr + otemp = olist; // Set temp pointer to object file list + while (otemp != NULL) { + if(!(otemp->o_flags & O_ARCHIVE)) { // UNUSED !!!!! + if((otemp->o_flags & O_USED) == 0) { + if(wflag) { + printf("Unused object file "); + put_name(otemp); + printf(" discarded.\n"); + } + if(oprev == NULL) { + olist = otemp->o_next; + } else { + oprev -> o_next = otemp->o_next; + } + ohold = otemp; + free(ohold->o_image); + free(ohold); + } else { + // Increment total of segment sizes ensuring requested alignment + textsize += (otemp->o_header.tsize+secalign) & ~secalign; + datasize += (otemp->o_header.dsize+secalign) & ~secalign; + bsssize += (otemp->o_header.bsize+secalign) & ~secalign; + oprev = otemp; + } + } + otemp = otemp->o_next; // Go to next object file list pointer + } + + // Update base addresses and create symbols _TEXT_E, _DATA_E and _BSS_E + tbase = tval; + ost_add("_TEXT_E", 0x05000000, tval + textsize); + if(!dval) { + // DATA follows TEXT + dbase = tval + textsize; + ost_add("_DATA_E", 0x07000000, tval + textsize + datasize); + if(!bval) { + // BSS follows DATA + bbase = tval + textsize + datasize; + ost_add("_BSS_E", 0x09000000, tval + textsize + datasize + bsssize); + } else { + // BSS is independant of DATA + bbase = bval; + ost_add("_BSS_E", 0x09000000, bval + bsssize); + } + } else { + // DATA is independant of TEXT + dbase = dval; + ost_add("_DATA_E", 0x07000000, dval + datasize); + if(!bval) { + // BSS follows DATA + bbase = dval + datasize; + ost_add("_BSS_E", 0x09000000, dval + datasize + bsssize); + } else { + // BSS is independant of DATA + bbase = bval; + ost_add("_BSS_E", 0x09000000, bval + bsssize); + } + } + + // Place each unresolved symbol in the output symbol table + if(dounresolved()) return(NULL); + + tptr = 0; // Initialise base addresses + dptr = 0; + bptr = 0; + + // For each file, relocate its symbols and add them to the output symbol table + otemp = olist; + oprev = NULL; + while (otemp != NULL) { + otemp->o_tbase = tptr; + if(!(otemp->o_flags & O_ARCHIVE)) { // Do rest only for non-ARCHIVE markers + otemp->o_dbase = dptr; + otemp->o_bbase = bptr; + tptr += (otemp->o_header.tsize+secalign) & ~secalign; + dptr += (otemp->o_header.dsize+secalign) & ~secalign; + bptr += (otemp->o_header.bsize+secalign) & ~secalign; + } + // For each symbol, (conditionally) add it to the ost + // For ARCHIVE markers, this adds the symbol for the file & returns + if(dosym(otemp)) + return(NULL); + if(otemp->o_flags & O_ARCHIVE) { + // Now that the archive is marked, remove it from list + if(oprev == NULL) { + olist = otemp->o_next; + } else { + oprev->o_next = otemp->o_next; + } + ohold = otemp; + if(ohold->o_image) free(ohold->o_image); + free(ohold); + } else { + oprev = otemp; + } + otemp = otemp->o_next; + } + + // Places all the externs, globals etc into the output symbol table + if(docommon() == -1) return NULL; + + // Create a new output file header + if((header = new_oheader()) == NULL) { + printf("make_ofile: out of memory!\n"); + return(NULL); + } + + // Fill in the output header. Does not match the actual output but values used as reference + header->magic = 0x0150; // COF magic number + header->tsize = textsize; // TEXT segment size + header->dsize = datasize; // DATA segment size + header->bsize = bsssize; // BSS segment size + header->ssize = (ost_ptr - ost); // Symbol table size + header->ostbase = ost; // Output symbol table base address + + // For each object file, relocate its TEXT and DATA segments. OR the result into ret so all + // files get moved (and errors reported) before returning with the error condition + for(otemp = olist; otemp != NULL; otemp = otemp->o_next) { + if(!(otemp->o_flags & O_ARCHIVE)) { + ret |= reloc_segment(otemp, T_TEXT); // TEXT segment relocations + ret |= reloc_segment(otemp, T_DATA); // DATA segment relocations + } + } + + hash_free(); // Done with global symbol hash tables + + return (ret ? (unsigned)NULL : header); +} + + +// +// --- Add Symbol to Hash List ------------------------------------------------ +// +int add_to_hlist(struct HREC **hptr, char *sym, struct OFILE *ofile, long value, int type) +{ + struct HREC *htemp; // Temporary hash record pointer + int i; + + if((htemp = new_hrec()) == NULL) { // Attempt to allocate new hash record + printf("Out of memory\n"); + return 1; + } + + for(i = 0; i < SYMLEN; i++) htemp->h_sym[i] = '\0'; + + strcpy(htemp->h_sym, sym); // Populate hash record + htemp->h_ofile = ofile; + htemp->h_value = value; + htemp->h_type = type; + + htemp->h_next = *hptr; // Update hash record pointers + *hptr = htemp; + + return(0); +} + + +// +// --- Add Symbol to the Unresolved Symbols Hash Table ------------------------ +// +add_unresolved(char * sym, struct OFILE * ofile) +{ + if (vflag > 1) + printf("add_unresolved(%s,%s)\n", sym, ofile->o_name); + + return add_to_hlist(&unresolved, sym, ofile, 0L, 0); +} + + +// +// --- Generate and Return Hash Value ----------------------------------------- +// +int dohash(char * s) +{ + int i = (s[0]+s[1]+s[2]+s[3]+s[4]+s[5]+s[6]+s[7] +s[8]+s[9]+s[10]+s[11]+s[12]+s[13]+s[14]) % NBUCKETS; + return(i); +} + + +// +// --- Lookup a Symbol in the Hash Table -------------------------------------- +// +struct HREC * lookup(char * sym) +{ + struct HREC * hptr = htable[dohash(sym)]; // Hash index to record based on sym + char symbol[SYMLEN]; // Temporary symbol storage + + memset(symbol, 0, SYMLEN); // Clean string for comparison + strcpy(symbol, sym); + + while (hptr != NULL) + { + if (symcmp(symbol, hptr->h_sym)) + return hptr; + + hptr = hptr->h_next; // Return hash pointer if found + } + + return NULL; // Not found in hash table +} + + +// +// --- Add Symbol to the Hash Table ------------------------------------------- +// +int hash_add(char * sym, long type, long value, struct OFILE * ofile) +{ + struct HREC * hptr; + int flag = !iscommon(type); + + if (vflag > 1) + { + printf("hash_add(%s,%s,%lx,", sym, ofile->o_name,value); + printf("%x,%s)\n", (unsigned int)type, (flag ? "GLOBAL" : "COMMON")); + } + + if ((hptr = lookup(sym)) == NULL) + { + return(add_to_hlist(&htable[dohash(sym)], sym, ofile, value, type)); + } + + // Already there! + if (iscommon(type) && !iscommon(hptr->h_type)) + { + // Mismatch: global came first; warn and keep the global one + if (wflag) + { + printf("Warning: %s: global from ",sym); + put_name(hptr->h_ofile); + printf(" used, common from "); + put_name(ofile); + printf(" discarded.\n"); + } + + putword(sym + 8, ABST_EXTERN); + putlong(sym + 10, 0L); + } + else if (iscommon(hptr->h_type) && !iscommon(type)) + { + // Mismatch: common came first; warn and keep the global one + if (wflag) + { + printf("Warning: %s: global from ", sym); + put_name(ofile); + printf(" used, common from "); + put_name(hptr->h_ofile); + printf(" discarded.\n"); + } + + hptr->h_type = type; + hptr->h_ofile = ofile; + hptr->h_value = value; + } + else if (flag) + { // They're both global + // Global exported by another ofile; warn and make this one extern + if (wflag) + { + printf("Duplicate symbol %s: ", sym); + put_name(hptr->h_ofile); + printf(" used, "); + put_name(ofile); + printf(" discarded\n"); + } + + putword(sym + 8, ABST_EXTERN); + } + else + { // They're both common + if (hptr->h_value < value) + { + hptr->h_value = value; + hptr->h_ofile = ofile; + } + } + + return(0); +} + +// +// ------------------------------------------------------------------------------------------------- +// Add the imported symbols from this file to unresolved, and the global and common symbols to the +// exported hash table. +// +// Change old-style commons (type == T_EXTERN, value != 0) to new-style ones +// (type == (T_GLOBAL | T_EXTERN)). +// ------------------------------------------------------------------------------------------------- +// + +int add_symbols(struct OFILE *Ofile) { + long nsymbols; // Number of symbols in object file + char *ptr; // Object data base pointer + char *sfix; // Symbol fixup table pointer + char *sstr; // Symbol string table pointer + long index; // String index + long type; // Symbol type + long value; // Symbol value + struct HREC *hptr; // Hash record pointer + char symbol[SYMLEN]; + + if(vflag > 1) + printf("Add symbols for file %s\n", Ofile->o_name); + + ptr = Ofile->o_image + 32 + // Get base pointer, start of sym fixups + Ofile->o_header.tsize + + Ofile->o_header.dsize + + Ofile->o_header.absrel.reloc.tsize + + Ofile->o_header.absrel.reloc.dsize; + sfix = ptr; // Set symbol fixup pointer + sstr = sfix + Ofile->o_header.ssize; // Set symbol table pointer + nsymbols = Ofile->o_header.ssize / 12; // Obtain number of symbols + + while(nsymbols) { + index = getlong(sfix); // Get symbol string index + type = getlong(sfix+4); // Get symbol type + value = getlong(sfix+8); // Get symbol value + memset(symbol, 0, SYMLEN); + strcpy(symbol, sstr+index); + + if(type & T_EXT) { // If this is a global/external + if((type - T_EXT)) { + if(hash_add(symbol, type, value, Ofile)) { // Then add to hash table + return(1); // Error if addition failed + } + } else { + if((hptr = lookup(symbol)) != NULL) { // If value is zero and in hash table + hptr->h_ofile->o_flags |= O_USED; // Mark symbol as used + } else if(add_unresolved(symbol, Ofile)) { // Otherwise add to unresolved list + return(1); // Error if addition failed + } + } + } + + sfix += 12; // Increment symbol fixup pointer + nsymbols--; // Decrement num of symbols to process + } + + return(0); // Success loading symbols +} + +// +// --- Process Object File for Symbols ------------------------------------------------------------- +// + +int doobj(char *fname, char *ptr, char *aname, int flags) { + struct OFILE *Ofile; // Object record pointer + char *temp; // Temporary data pointer + + if((Ofile = new_ofile()) == NULL) { // Allocate memory for object record ptr + printf("Out of memory processing %s\n",fname); + return(1); + } + + // Starting after all pathnames, etc., copy .o file name to Ofile + temp = path_tail(fname); + if(strlen(temp) > FNLEN - 1) { // Check filename length + printf("File name too long: %s\n", temp); + return(1); + } + if(strlen(aname) > FNLEN - 1) { // Check archive name length + printf("Archive name too long: %s\n", aname); + return(1); + } + strcpy(Ofile->o_name, temp); // Store filename + strcpy(Ofile->o_arname, aname); // Store archive name + + Ofile->o_next = NULL; // Initialise object record information + Ofile->o_tbase = 0; + Ofile->o_dbase = 0; + Ofile->o_bbase = 0; + Ofile->o_flags = flags; + Ofile->o_image = ptr; + + // Don't do anything if this is just an ARCHIVE marker, just add the file to the olist + if(!(flags & O_ARCHIVE)) { + Ofile->o_header.magic = getlong(ptr); + Ofile->o_header.tsize = getlong(ptr+4); + Ofile->o_header.dsize = getlong(ptr+8); + Ofile->o_header.bsize = getlong(ptr+12); + Ofile->o_header.ssize = getlong(ptr+16); + Ofile->o_header.absrel.reloc.tsize = getlong(ptr+24); + Ofile->o_header.absrel.reloc.dsize = getlong(ptr+28); + + // Round BSS off to alignment boundary + Ofile->o_header.bsize = (Ofile->o_header.bsize + secalign) & ~secalign; + if(Ofile->o_header.dsize & 7) { + printf("Warning: data segment size of "); + put_name(Ofile); + printf(" is not a phrase multiple\n"); + } + + // Check for odd segment sizes + if((Ofile->o_header.tsize & 1) || (Ofile->o_header.dsize & 1) || (Ofile->o_header.bsize & 1)) { + printf("Error: odd-sized segment in "); + put_name(Ofile); + printf("; link aborted.\n"); + return(1); + } + + if(add_symbols(Ofile)) return(1); + } + + // Add this file to the olist + if(olist == NULL) + olist = Ofile; + else + olast->o_next = Ofile; + olast = Ofile; + return(0); +} + +// +// --- Remove Elements from Unresolved List which are Resolvable ----------------------------------- +// + +int dolist(void) { + struct HREC *uptr; // Unresolved hash record pointer + struct HREC *prev = NULL; // Previous hash record pointer + struct HREC *htemp; // Temporary hash record pointer + struct OFILE *ptemp; // Temporary object file record pointer + + while (plist != NULL) { // Process object file list + if(doobj(plist->o_name, plist->o_image, plist->o_arname, plist->o_flags)) + return(1); + ptemp = plist; + plist = plist->o_next; + free(ptemp); + } + + for(uptr = unresolved; uptr != NULL; ) { // Process unresolved list + if(vflag > 1) printf("lookup(%s) => ",uptr->h_sym); + if((htemp = lookup(uptr->h_sym)) != NULL) { + if(vflag > 1) + printf(" %s in %s\n", isglobal(htemp->h_type) ? "global" : "common", htemp->h_ofile->o_name); + htemp->h_ofile->o_flags |= O_USED; + if(prev == NULL) { + unresolved = uptr->h_next; + free(uptr); + uptr = unresolved; + } else { + prev->h_next = uptr->h_next; + free(uptr); + uptr = prev->h_next; + } + } else { + printf("NULL\n"); + prev = uptr; + uptr = uptr->h_next; + } + } + + return(0); +} + +// +// --- Extract Filename from Path ------------------------------------------------------------------ +// + +char *path_tail(char *name) { + char *temp; // Temporary pointer + + temp = max(strrchr(name,'/'), max(strrchr(name,':'), strrchr(name, 92))); + if(temp == NULL) temp = (name - 1); + return(temp + 1); +} + +// +// --- Add Input File to Processing List ----------------------------------------------------------- +// + + +int pladd(char *ptr, char *fname) { + if(plist == NULL) { + plist = new_ofile(); // First time object record allocation + plast = plist; // Update last object record pointer + } else { + plast->o_next = new_ofile(); // Next object record allocation + plast = plast->o_next; // Update last object record pointer + } + + if(plast == NULL) { + printf("Out of memory.\n"); // Error if memory allocation fails + return(1); + } + + if(strlen(path_tail(fname)) > FNLEN-1) { // Error on excessive filename length + printf("File name too long: %s (sorry!)\n",fname); + return(1); + } + + strcpy(plast->o_name, path_tail(fname)); // Store filename, not path + *plast->o_arname = 0; // No archive name for this file + plast->o_image = ptr; // Store data pointer + plast->o_flags = O_USED; // File is used + plast->o_next = NULL; // Initialise next record pointer + + return(0); // Return without errors +} + +// ------------------------------------------------------------------------------------------------- +// Process in Binary Include Files and Add them to the Processing List. This routine takes in the +// binary file and creates an 'object' file in memory. Sym1/Sym2 point to the start and end of data. +// +// Image size for include files is: +// Header ....... 32 bytes +// Data ......... dsize +// Sym Fixups ... 2 * 12 bytes +// Symbol Size .. 4 bytes (Value to include symbols and terminating null) +// Symbols ...... (strlen(sym1) + 1) + (strlen(sym2) + 1) +// Terminate .... 4 bytes (0x00000000) +// ------------------------------------------------------------------------------------------------- + +int doinclude(char *fname, int handle, char *sym1, char *sym2, int segment) { + long fsize, dsize, size; // File, DATA segment and image sizes + char *ptr, *sptr; // Data pointers + int i; // Iterators + int sym1len = 0; // Symbol 1 length + int sym2len = 0; // Symbol 2 length + unsigned symtype = 0; + + fsize = FSIZE(handle); // Get size of include file + dsize = (fsize+secalign) & ~secalign; // Round up to a alignment boundary + + sym1len = strlen(sym1) + 1; // Get sym1 length + null termination + sym2len = strlen(sym2) + 1; // Get sym2 length + null termination + + size = 32 + dsize + 24 + 4 + sym1len + sym2len + 4; + + // Use calloc so the header & fixups initialize to zero + if((ptr = calloc(size, 1L)) == NULL) { // Allocate object image memory + printf("Out of memory while including %s\n", fname); + close(handle); + return(1); + } + + if(read(handle, ptr+32, fsize) != fsize) { // Read in binary data + printf("File read error on %s\n", fname); + close(handle); + free(ptr); + return(1); + } + close(handle); // Close file + + + strcpy(obj_fname[obj_index], path_tail(fname)); + + // Build this image's dummy header + putlong(ptr, 0x00000107); // Magic number + if(segment) { + putlong(ptr+4, dsize); // Text size + putlong(ptr+8, 0L); // Data size + symtype = 0x05000000; + obj_segsize[obj_index][0] = dsize; + obj_segsize[obj_index][1] = 0; + obj_segsize[obj_index][2] = 0; + } else { + putlong(ptr+4, 0L); // Text size + putlong(ptr+8, dsize); // Data size + symtype = 0x07000000; + obj_segsize[obj_index][0] = 0; + obj_segsize[obj_index][1] = dsize; + obj_segsize[obj_index][2] = 0; + } + + obj_index++; // Increment object count + + putlong(ptr+12, 0L); // BSS size + putlong(ptr+16, 24); // Symbol table size + putlong(ptr+20, 0L); // Entry point + putlong(ptr+24, 0L); // TEXT relocation size + putlong(ptr+28, 0L); // DATA relocation size + + sptr = ptr + 32 + dsize; // Set sptr to symbol table location + + putlong(sptr, 4L); // String offset of symbol1 + putlong(sptr+4, symtype); // Symbol type + putlong(sptr+8, 0x00000000); // Symbol has no value (START) + putlong(sptr+12, 4L + (sym2len-1)); // String offset of symbol2 + putlong(sptr+16, symtype); // Symbol type + putlong(sptr+20, dsize); // Symbol is data size (END) + + sptr = ptr + 32 + dsize + 24; // Set sptr to symbol table size loc + + putlong(sptr, sym1len + 4L); // Size of symbol table + + sptr = ptr + 32 + dsize + 24 + 4; // Set sptr to symbol table location + + for(i = 0; i < (sym1len-1); i++) // Write symbol1 to string table + sptr[i] = *sym1++; + sptr += (sym1len-1); // Step past symbol string + *sptr = '\0'; // Terminate symbol string + sptr += 1; // Step past termination + for(i = 0; i < (sym2len-1); i++) // Write symbol2 to string table + sptr[i] = *sym2++; + sptr += (sym2len-1); // Step past symbol string + *sptr = '\0'; // Terminate symbol string + sptr += 1; // Step past termination + + putlong(sptr, 0L); // Terminating long for object file + + return pladd(ptr,fname); +} + +// +// ------------------------------------------------------------------------------------------------- +// Takes a file name, gets in its image, puts it on plist. The image may already be in memory: if +// so, the ptr arg is non-null. If so, the file is already closed. Note that the file is already +// open (from dofile()). RETURNS a pointer to the OFILE structure for this file, so you can diddle +// its flags (dofile sets O_USED for files on the command line). +// ------------------------------------------------------------------------------------------------- +// + +int doobject(char *fname, int fd, char *ptr) { + long size; // File size + + if(ptr == NULL) { + size = FSIZE(fd); // Get size of input object file + if((ptr = malloc(size)) == NULL) { // Allocate memory for file data + printf("Out of memory while processing %s\n", fname); + close(fd); // Close and error + return(1); + } + if(read(fd, ptr, size) != size) { // Read in file data + printf("File read error on %s\n", fname); + close(fd); // Close, free memory and error + free(ptr); + return(1); + } + + strcpy(obj_fname[obj_index], fname); + obj_segsize[obj_index][0] = (getlong(ptr + 4) + secalign) & ~secalign; + obj_segsize[obj_index][1] = (getlong(ptr + 8) + secalign) & ~secalign; + obj_segsize[obj_index][2] = (getlong(ptr + 12) + secalign) & ~secalign; + obj_index++; + + close(fd); // Close file + } + + // Now add this image to the list of pending ofiles (plist) + // This routine is shared by doinclude after it builds the image + return(pladd(ptr, fname)); +} + +// +// --- Process In Outstanding Object Files --------------------------------------------------------- +// + +int flush_handles(void) { + int i; // Iterator + char magic[4]; // Magic header number + // unsigned test; + for(i = 0; i < (int)hd; i++) { // Process all handles + if(vflag == 1) { // Verbose mode information + printf("Read file %s%s\n", name[i], hflag[i] ? " (include)" : ""); + } + if(!hflag[i]) { // Attempt to read file magic number + // OBJECT FILES + if(read(handle[i],magic,4) != 4) { + printf("Error reading file %s\n", name[i]); + close(handle[i]); // Close file and error + return(1); + } + + lseek(handle[i], 0L, 0); // Reset to start of input file +// test = getlong(magic); printf("Magic Number is 0x%08X\n", test); + if(getlong(magic) == 0x00000107) { // Look for SMAC/MAC object files + if(doobject(name[i], handle[i], 0L)) // Process input object file + return(1); + } else { + printf("%s is not a supported object file\n", name[i]); + close(handle[i]); // Close file and error + return(1); + } + } else { + // INCLUDE FILES + // If hflag[i] is 1, include this in the data segment; if 2, put in in text segment + if(doinclude(name[i], handle[i], hsym1[i], hsym2[i], hflag[i]-1)) + return(1); + } + } + + for(i = 0; i < (int)hd; i++) { // Free include, symbol & object handles + free(name[i]); + if(hflag[i]) { + free(hsym1[i]); + free(hsym2[i]); + } + } + + hd = 0; // Reset next handle indicator + + return(0); // Return +} + +// +// --- Load newargv with Pointers to Arguments Found in the Buffer --------------------------------- +// + +int parse(char *buf, char *newargv[]) { + int i = 1; + + if(vflag) { + printf("begin parsing\n"); + } + while(1) { + while(*buf && strchr(",\t\n\r\14 ", *buf)) buf++; + + /* test for eof */ + if(*buf == '\0' || *buf == 26) { + if(i == 0) { + printf("No commands in command file\n"); + return(-1); + } else { + return(i); + } + } + + /* test for comment */ + if(*buf == '#') { + /* found a comment; skip to next \n and start over */ + while(*buf && *buf != '\n') buf++; + continue; + } + + if(i == MAXARGS) { + printf("Too many arguments in command file\n"); + return(-1); + } + newargv[i] = buf; + while(!strchr(",\t\n\r\14 ", *buf)) { + if(*buf == '\0' || *buf == 26) { + printf("Finished parsing %d args\n", i); + return(i); + } + buf++; + } + *buf++ = '\0'; + if(vflag) { + printf("argv[%d] = \"%s\"\n",i,newargv[i]); + } + i++; + } +} + +// +// --- Process in a Link Command File ----------------------------------------- +// + +int docmdfile(char * fname) +{ + int fd; // File descriptor + unsigned size; // Command file size + char * ptr; // Pointer + int newargc; // New argument count + char * (*newargv)[]; // New argument value array + + if (vflag > 1) + printf("docmdfile(%s)\n", fname); // Verbose information + + // Allocate memory for new argument values + newargv = malloc((long)(sizeof(char *) * MAXARGS)); + + if (!newargv) + { + printf("Out of memory.\n"); + return(1); + } + + // Attempt to open and read in the command file + if (fname) + { + if ((fd = open(fname, _OPEN_FLAGS)) < 0) + { + printf("Cannot open command file %s.\n", fname); + return(1); + } + + size = FSIZE(fd); + + if ((ptr = malloc(size + 1)) == NULL) + { + printf("Out of memory.\n"); + close(fd); + return(1); + } + + if (read(fd, ptr, size) != (int)size) + { + printf("Read error on command file %s.\n", fname); + close(fd); + return(1); + } + + *(ptr + size) = 0; // Null terminate the buffer + close(fd); + } + else + { + printf("No command filename specified\n"); + return(1); + } + + // Parse the command file + if ((newargc = parse(ptr, *newargv)) == -1) + { + return(1); + } + + // Process the inputted flags + if (doargs(newargc, *newargv)) + { + printf("docmdfile: doargs returns TRUE\n"); + return(1); + } + + free(ptr); + free(newargv); + + return(0); +} + +// +// --- Take an Argument List and Parse the Command Line ----------------------- +// + +int doargs(int argc, char * argv[]) +{ + int i = 1; // Iterator + int c; // Command line character + char * ifile, * isym; // File name and symbol name for -i + + while(i < argc) + { // Parse through option switches & files + if (argv[i][0] == '-') + { // Process command line switches + if (!argv[i][1]) + { + printf("Illegal option argument: %s\n\n", argv[i]); + display_help(); + return(1); + } + + c = argv[i++][1]; // Get next character in command line + + switch (c) + { // Process command line switch + case '?': // Display usage information + case 'h': + case 'H': + display_version(); + display_help(); + return(1); + case 'a': + case 'A': // Set absolute linking on + if (aflag) + warn('a', 1); + + if (i + 2 >= argc) + { + printf("Not enough arguments to -a\n"); + return(1); + } + + aflag = 1; // Set abs link flag + // Segment order is TEXT, DATA, BSS + // Text segment can be 'r', 'x' or a value + ttype = 0; + + if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1]) + { + ttype = -1; // TEXT segment is relocatable + } + else if ((*argv[i] == 'x' || *argv[i] == 'X')) + { + printf("Error in text-segment address: cannot be contiguous\n"); + return(1); + } + else if ((ttype = 0), getval(argv[i], &tval)) + { + printf("Error in text-segment address: %s is not 'r', 'x' or an address.", argv[i]); + return(1); + } + + i++; + // Data segment can be 'r', 'x' or a value + dtype = 0; + + if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1]) + { + dtype = -1; // DATA segment is relocatable + } + else if ((*argv[i] == 'x' || *argv[i] == 'X')) + { + dtype = -2; // DATA follows TEXT + } + else if ((dtype = 0), getval(argv[i],&dval)) + { + printf("Error in data-segment address: %s is not 'r', 'x' or an address.", argv[i]); + return(1); + } + + i++; + btype = 0; + + // BSS segment can be 'r', 'x' or a value + if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1]) + { + btype = -1; // BSS segment is relocatable + } + else if ((*argv[i] == 'x' || *argv[i] == 'X')) + { + btype = -3; // BSS follows DATA + } + else if ((btype = 0), getval(argv[i],&bval)) + { + printf("Error in bss-segment address: %s is not 'r', 'x[td]', or an address.", argv[i]); + return(1); + } + + i++; + break; + case 'b': + case 'B': // Don't remove muliply defined locals + if (bflag) + warn('b', 1); + + bflag = 1; + break; + case 'c': + case 'C': // Process a command file + if (i == argc) + { + printf("Not enough arguments to -c\n"); + return(1); + } + + if (docmdfile(argv[i++])) + { + return(1); + } + + break; + case 'd': + case 'D': // Wait for "return" before exiting + if (dflag) + warn('d', 0); + + dflag = 1; + waitflag = 1; + break; + case 'e': + case 'E': // Output COFF (absolute only) + cflag = 1; + break; + case 'g': + case 'G': // Output source level debugging + printf("\'g\' flag not currently implemented\n"); + gflag = 0; + /* + if(gflag) warn('g', 1); + gflag = 1; + */ + break; + case 'i': + case 'I': // Include binary file + if (i + 2 > argc) + { + printf("Not enough arguments to -i\n"); + return(1); + } + + ifile = argv[i++]; + isym = argv[i++]; + + if ((argv[i-3][2] == 'i') || (argv[i-3][2] == 'I')) + { // handle -ii (No truncation) + if (!cflag) + printf("warning: (-ii) COFF format output not specified\n"); + } + else + { // handle -i (Truncation) + if (strlen(isym) > 7) + isym[7] = '\0'; + } + + // Place include files in the DATA segment only + if (dofile(ifile, DSTSEG_D, isym)) + return(1); + + break; + case 'l': + case 'L': // Add local symbols + if (lflag) + warn('l', 1); + + lflag = 1; + break; + case 'm': + case 'M': // Produce load symbol map + if (mflag) + warn('m', 1); + + mflag = 1; + break; + case 'n': + case 'N': // Output no header to .abs file + if (noheaderflag) + warn('n', 1); + + noheaderflag = 1; + break; + case 'o': + case 'O': // Specify an output file + if (oflag) + warn('o', 1); + + oflag = 1; + + if (i >= argc) + { + printf("No output filename following -o switch\n"); + return(1); + } + + if (strlen(argv[i]) > FARGSIZE - 5) + { + printf("Output file name too long (sorry!)\n"); + return(1); + } + + strcpy(ofile, argv[i++]); + break; + case 'r': + case 'R': // Section alignment size + if (rflag) + warn('r', 1); + + rflag = 1; + + switch (argv[i-1][2]) + { + case 'w': case 'W': secalign = 1; break; // Word alignment + case 'l': case 'L': secalign = 3; break; // Long alignment + case 'p': case 'P': secalign = 7; break; // Phrase alignment + case 'd': case 'D': secalign = 15; break; // Double phrase alignment + case 'q': case 'Q': secalign = 31; break; // Quad phrase alignment + default: secalign = 7; break; // Default phrase alignment + } + + break; + case 's': + case 'S': // Output only global symbols + if (sflag) + warn('s', 1); + + sflag = 1; + break; + case 'v': + case 'V': // Verbose information + if (!vflag && !versflag) + { + display_version(); + } + + vflag++; + break; + case 'z': + case 'Z': // Suppress banner flag + if (zflag) + warn('z', 1); + + zflag = 1; + break; + default: + printf("unknown option argument `%c'\n", c); + return(1); + } + } + else + { // Not a switch, then process as a file + if (dofile(argv[i++], 0, NULL)) + return(1); + } + + } + + if (!oflag && vflag) + { + strcpy(ofile, "output"); + printf("Output file is %s[.ext]\n", ofile); + } + + if (oflag && vflag) + printf("Output file is %s\n", ofile); + + if (sflag) + lflag = 0; + + return 0; // No problems encountered +} + + +// +// --- Display Version Information -------------------------------------------- +// +void display_version(void) +{ + if (displaybanner)// && vflag) + { + printf("\nReboot's Linker for Atari Jaguar\n"); + printf("Copyright (c) 199x Allan K. Pratt, 2011 Reboot\n"); + printf("V%i.%i.%i %s (%s)\n\n", MAJOR, MINOR, PATCH, __DATE__, PLATFORM); + } +} + + +// +// --- Display Command Line Help ----------------------------------------------- +// +void display_help(void) +{ + printf("Usage:\n"); + printf(" %s [-options] file(s)\n", cmdlnexec); + printf("\n"); + printf("Options:\n"); + printf(" -? or -h display usage information\n"); + printf(" -a output absolute file\n"); + printf(" hex value: segment address\n"); + printf(" r: relocatable segment\n"); + printf(" x: contiguous segment\n"); + printf(" -b don't remove multiply defined local labels\n"); + printf(" -c add contents of to command line\n"); + printf(" -d wait for key after link\n"); + printf(" -e output COF absolute file\n"); + printf(" -g output source-level debugging\n"); + printf(" -i