+//
+// 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 RelocateSegment(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)
+ {
+ // TEXT segment size plus padding
+ pad = ((ofile->o_header.tsize + secalign) & ~secalign);
+ textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize));
+
+ if (vflag > 1)
+ printf("RelocateSegment(%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)
+ {
+ // DATA segment size plus padding
+ pad = ((ofile->o_header.dsize + secalign) & ~secalign);
+ dataoffset += (ofile->o_header.dsize + (pad - ofile->o_header.dsize));
+ // BSS segment size plus padding
+ pad = ((ofile->o_header.bsize + secalign) & ~secalign);
+ bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize));
+
+ if (vflag > 1)
+ printf("RelocateSegment(%s, DATA) : No Relocation Data\n", ofile->o_name);
+
+ return 0;
+ }
+
+ // Verbose mode information
+ if (vflag > 1)
+ {
+ printf("RelocateSegment(%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;
+
+ if (vflag)
+ printf("RELOCSIZE :: %d Records = %d\n", relocsize, relocsize / 8);
+
+ // 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 = OSTLookup(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 = (rflg & 0xFFFFFF00);
+
+ if (!glblreloc)
+ {
+ switch (swcond)
+ {
+ case 0x00000200: // Absolute Value
+ break;
+ case 0x00000400: // TEXT segment relocation record
+ if (flag == T_TEXT) // Is this a TEXT section record?
+ newdata = tbase + textoffset + olddata;
+ else
+ newdata = tbase + dataoffset + olddata; // Nope, must be DATA section
+
+ break;
+ case 0x00000600: // DATA segment relocation record
+ newdata = dbase + dataoffset
+ + (olddata - ofile->o_header.tsize);
+
+ break;
+ case 0x00000800: // BSS segment relocation record
+ 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);
+ }
+
+ // Shamus: Let's output some info to aid in debugging this crap
+ if (vflag > 1)
+ {
+ char ssiString[128];
+ ssiString[0] = 0;
+
+ if (glblreloc)
+ sprintf(ssiString, " [ssi:%i]", ssidx);
+
+ printf("RelocateSegment($%08X): %s, $%08X: $%08X => $%08X%s\n", rflg, (glblreloc ? sym : "(LOCAL)"), addr, olddata, getlong(sptr + addr), ssiString);
+ }
+
+ rptr += 8; // Point to the next relocation record
+ }
+
+ // Update the COF segment offset allowing for the phrase padding.
+ if (flag == T_TEXT)
+ {
+ // TEXT segment plus padding
+ pad = ((ofile->o_header.tsize + secalign) & ~secalign);
+ textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize));
+ }
+ else
+ {
+ // DATA segment plus padding
+ pad = ((ofile->o_header.dsize + secalign) & ~secalign);
+ dataoffset += (ofile->o_header.dsize + (pad - ofile->o_header.dsize));
+ // BSS segment plus padding
+ pad = ((ofile->o_header.bsize + secalign) & ~secalign);
+ bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize));
+ }
+
+ // Return value, should always be zero
+ return 0;
+}
+
+
+//
+// Add a path character to the end of string 's' if it doesn't already end with
+// one. The last occurrance of '/' or '\' in the string is assumed to be the
+// path character.
+//
+// This is fucking shit. We know what the path delimiter is, its FUCKING
+// DEFINED IN THE FUCKING HEADER. FOR FUCKS SAKE. AND YES, HOPE TO GOD THERE'S
+// ENOUGH SPACE IN THE PASSED IN BUFFER TO HOLD THE EXTRA CHARACTER!
+//
+void AppendPathDelimiter(char * s)
+{
+#if 0
+ // And hope to God that there's enough space in the buffer...
+ char pathchar = 0;
+
+ while (*s)
+ {
+ if (*s == '/' || *s == '\\')
+ pathchar = *s;
+
+ s++;
+ }
+
+ s--;
+
+ if (*s == pathchar)
+ return;
+
+ *++s = pathchar;
+ *++s = 0;
+#else
+ int length = strlen(s);
+
+ if (s[length - 1] != PATH_DELIMITER)
+ {
+ s[length] = PATH_DELIMITER;
+ s[length + 1] = 0; // BUFFER OVERFLOW!!!! FFFFFFFFUUUUUUUUUUUU
+ }
+#endif
+}
+
+
+//
+// Try to open "name", "name.o", "${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 TryOpenFile(char ** p_name)
+{
+ char * name = *p_name;
+
+ // Note that libdir will be an empty string if there is none specified
+ char * tmpbuf = malloc(strlen(name) + strlen(libdir) + 3);
+
+ if (tmpbuf == NULL)
+ {
+ printf("TryOpenFile() : out of memory\n");
+ return -1;
+ }
+
+ strcpy(tmpbuf, name);
+ int hasdot = (strrchr(tmpbuf, '.') > strrchr(tmpbuf, PATH_DELIMITER));
+ // Try to open file as passed first
+ int fd = open(tmpbuf, _OPEN_FLAGS);
+
+ if (fd >= 0)
+ goto ok;
+
+ if (!hasdot)
+ {
+ // Try to open file with '.o' added
+ strcat(tmpbuf, ".o");
+ fd = open(tmpbuf, _OPEN_FLAGS);
+
+ if (fd >= 0)
+ goto ok;
+ }
+
+ // Try the libdir only if the name isn't already anchored
+ // Shamus: WTH, this makes no sense... Why the ':'? Is this a Macintosh??
+// if (*name != '/' && *name != '\\' && !strchr(name, ':'))
+ if ((*name != PATH_DELIMITER) && (strchr(name, ':') == NULL))
+ {
+ strcpy(tmpbuf, libdir);
+ // Add a trailing path char if there isn't one already
+ AppendPathDelimiter(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;
+ }
+ }
+
+ // Couldn't open file at all
+ return -1;
+
+// There are worse things... :-P
+ok:
+ tmpbuf = realloc(tmpbuf, strlen(tmpbuf) + 1);
+
+ if (tmpbuf == NULL)
+ {
+ printf("TryOpenFile() : out of memory\n");
+ return -1;
+ }
+
+ *p_name = tmpbuf;
+ return fd;
+}
+
+
+//
+// Archive File Use, Needs to be Removed [Shamus: NON!]
+//
+void put_name(struct OFILE * p)
+{
+ int flag = *(p->o_arname);
+ printf("%s%s%s", (flag ? (char *)(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 incFlag, char * sym)
+{
+ // Verbose information
+ if (vflag)
+ {
+ printf("DoFile() : `%s' %s", fname, incFlag ? "INCLUDE" : "NORMAL");
+
+ if (incFlag)
+ printf(" symbol %s", sym);
+
+ printf("\n");
+ }
+
+ // Reached maximum file handles
+ if (hd == NHANDLES)
+ {
+ if (ProcessFiles())
+ return 1;
+ }
+
+ // Attempt to open input file
+ int fd = TryOpenFile(&fname);
+
+ if (fd < 0)
+ {
+ 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 TryOpenFile()
+ hflag[hd] = incFlag;
+
+ // Include files
+ if (incFlag)
+ {
+ int temp = strlen(sym); // Get symbol length
+
+ // 100 chars is max length of a symbol
+ if (temp > 99)
+ {
+ 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';
+ }
+ }
+
+ // Increment next handle index
+ hd++;
+ // No problems
+ return 0;
+}
+
+
+//
+// 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
+ long 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;
+
+ // Write padding bytes
+ if (fwrite(padarray, padsize, 1, fd) != 1)
+ return 1;
+ }
+
+ return 0;
+}
+
+
+//
+// Write the output file
+//
+int write_ofile(struct OHEADER * header)
+{
+ 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
+
+ // Add correct output extension if none
+ if (strchr(ofile, '.') == NULL)
+ {
+ 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)
+ }
+
+ FILE * fd = fopen(ofile, "wb"); // Attempt to open output file
+
+ if (!fd)
+ {
+ printf("Can't open output file %s\n", ofile);
+ return 1;
+ }
+
+ // Build the output file header
+ // Absolute (COF) header
+ if (cflag)
+ {
+ 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
+ }
+ // Absolute (ABS) header
+ else
+ {
+ // 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
+ // Absolute (ABS) header
+ if (!cflag)
+ {
+ if (!noheaderflag)
+ if (fwrite(himage, 36, 1, fd) != 1)
+ goto werror;
+ }
+ // Absolute (COF) header
+ else
+ {
+ 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;
+
+ // Write only if segment has size
+ if (osize)
+ {
+ 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;
+
+ // Write only if the segment has size
+ if (osize)
+ {
+ 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
+ // Absolute (COF) symbol/string table
+ if (cflag)
+ {
+ 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;
+ }
+ }
+ // Absolute (ABS) symbol/string table
+ else
+ {
+ // The symbol and string table have been created as part of the
+ // DoSymbol() 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
+
+ // Not doing debug symbols
+ if (type & 0xF0000000)
+ continue;
+
+ // Get symbol value
+ value = getlong((ost + (i * 12)) + 8);
+ slen = strlen(oststr + index);
+
+ // Get symbol string (maximum 8 chars)
+ if (slen > 8)
+ {
+ for(j=0; j<8; j++)
+ *(symbol + j) = *(oststr + index + j);
+ }
+ else
+ {
+ for(j=0; j<slen; j++)
+ *(symbol + j) = *(oststr + index + j);
+ }
+
+ // Modify to ABS symbol type
+ switch (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
+
+ // Write symbol record
+ if (fwrite(symbol, 14, 1, fd) != 1)
+ goto werror;
+ }
+ }
+ }
+
+ // Close the file
+ if (fclose(fd))
+ {
+ printf("Close error on output file %s\n",ofile);
+ return 1;
+ }
+
+ return 0;
+
+werror:
+ 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
+
+ // Display only three columns
+ if (c == 3)
+ {
+ 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;
+}
+
+
+//
+// Stuff the (long) value of a string into the value argument. RETURNS TRUE if
+// the string doesn't parse. Parses only as a hexadecimal string.
+//
+int GetHexValue(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;
+}
+
+
+//
+// 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 OHEADER * header; // Output header pointer
+
+ // Initialize cumulative segment sizes
+ textsize = datasize = bsssize = 0;
+
+ // For each object file, accumulate the sizes of the segments but remove
+ // those object files which are unused
+ struct OFILE * oprev = NULL; // Init previous obj file list ptr
+ struct OFILE * otemp = olist; // Set temp pointer to object file list
+ int i = 0;
+
+ while (otemp != NULL)
+ {
+ // UNUSED !!!!! (it's !O_ARCHIVE, so this code executes.)
+ if (!(otemp->o_flags & O_ARCHIVE))
+ {
+ 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;
+
+ struct OFILE * ohold = otemp;
+
+ if (!ohold->isArchiveFile)
+ free(ohold->o_image);
+
+ free(ohold);
+
+ // Also need to remove them from the obj_* tables too :-P
+ // N.B.: Would probably be worthwhile to remove crap like this
+ // and stuff it into the OFILE structure...
+ if (wflag)
+ printf("»-> removing %s... (index == %i, len == %i)\n", obj_fname[i], i, obj_index - 1);
+
+ int k;
+
+ for(k=i; k<obj_index-1; k++)
+ {
+ memcpy(obj_fname[k], obj_fname[k + 1], FNLEN);
+ obj_segsize[k][0] = obj_segsize[k + 1][0];
+ obj_segsize[k][1] = obj_segsize[k + 1][1];
+ obj_segsize[k][2] = obj_segsize[k + 1][2];
+ }
+
+ obj_index--;
+ i--;
+ }
+ 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;
+ }
+ }
+
+ // Go to next object file list pointer
+ otemp = otemp->o_next;
+ i++;
+ }
+
+ // Update base addresses and create symbols _TEXT_E, _DATA_E and _BSS_E
+ tbase = tval;
+ OSTAdd("_TEXT_E", 0x05000000, tval + textsize);
+
+ if (!dval)
+ {
+ // DATA follows TEXT
+ dbase = tval + textsize;
+ OSTAdd("_DATA_E", 0x07000000, tval + textsize + datasize);
+
+ if (!bval)
+ {
+ // BSS follows DATA
+ bbase = tval + textsize + datasize;
+ OSTAdd("_BSS_E", 0x09000000, tval + textsize + datasize + bsssize);
+ }
+ else
+ {
+ // BSS is independent of DATA
+ bbase = bval;
+ OSTAdd("_BSS_E", 0x09000000, bval + bsssize);
+ }
+ }
+ else
+ {
+ // DATA is independant of TEXT
+ dbase = dval;
+ OSTAdd("_DATA_E", 0x07000000, dval + datasize);
+
+ if (!bval)
+ {
+ // BSS follows DATA
+ bbase = dval + datasize;
+ OSTAdd("_BSS_E", 0x09000000, dval + datasize + bsssize);
+ }
+ else
+ {
+ // BSS is independent of DATA
+ bbase = bval;
+ OSTAdd("_BSS_E", 0x09000000, bval + bsssize);
+ }
+ }
+
+ // Place each unresolved symbol in the output symbol table
+ if (DoUnresolved())
+ return NULL;
+
+ // Initialise base addresses
+ tptr = dptr = 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;
+
+ // Do rest only for non-ARCHIVE markers
+ if (!(otemp->o_flags & O_ARCHIVE))
+ {
+ 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
+ // (Shamus: N.B. it does no such thing ATM)
+ if (DoSymbol(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;
+
+ struct OFILE * ohold = otemp;
+
+ if (ohold->o_image)
+ if (!ohold->isArchiveFile)
+ 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
+ header = new_oheader();
+
+ if (header == 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 |= RelocateSegment(otemp, T_TEXT); // TEXT segment relocations
+ ret |= RelocateSegment(otemp, T_DATA); // DATA segment relocations
+ }
+ }
+
+ // Done with global symbol hash tables
+ FreeHashes();
+
+ return (ret ? (struct OHEADER *)NULL : header);
+}
+
+
+//
+// Add symbol to hash list
+//
+int AddSymbolToHashList(struct HREC ** hptr, char * sym, struct OFILE * ofile,
+ long value, int type)
+{
+ struct HREC * htemp = new_hrec();
+
+ if (htemp == NULL)
+ {
+ printf("Out of memory\n");
+ return 1;
+ }
+
+ // Shamus: Moar testing...
+ if (vflag > 1)
+ {
+ printf("AddSymbolToHashList(): hptr=$%08X, sym=\"%s\", ofile=$%08X, value=$%X, type=$%X\n", hptr, sym, ofile, value, type);
+ }
+
+ // Populate hash record
+ memset(htemp->h_sym, 0, SYMLEN);
+ strcpy(htemp->h_sym, sym);
+ htemp->h_ofile = ofile;
+ htemp->h_value = value;
+ htemp->h_type = type;
+
+ // Add new hash to the front of the list (hence the ** for hptr)
+ htemp->h_next = *hptr;
+ *hptr = htemp;
+
+ return 0;
+}
+
+
+//
+// Add symbol to the unresolved symbols hash table (really, it's a linked list)
+//
+int AddUnresolvedSymbol(char * sym, struct OFILE * ofile)
+{
+ if (vflag > 1)
+ printf("AddUnresolvedSymbol(%s, %s)\n", sym, ofile->o_name);
+
+ return AddSymbolToHashList(&unresolved, sym, ofile, 0L, 0);
+}
+
+
+//
+// Remove the HREC from the unresolved symbol list, and pass back a pointer
+// to the spot where the HREC was.
+//
+struct HREC * RemoveUnresolvedSymbol(struct HREC * hrec)
+{
+ struct HREC * ptr = unresolved;
+ struct HREC * previous = NULL;
+
+ while ((ptr != hrec) && (ptr != NULL))
+ {
+ previous = ptr;
+ ptr = ptr->h_next;
+ }
+
+ // Not found...!
+ if (ptr == NULL)
+ return NULL;
+
+ struct HREC * next = ptr->h_next;
+
+ // Remove the head if nothing previous, otherwise, remove what we found
+ if (previous == NULL)
+ unresolved = next;
+ else
+ previous->h_next = next;
+
+ free(ptr);
+ return next;
+}
+
+
+//
+// Add symbol to the unresolved symbols hash table
+//
+int AddARSymbol(char * sym, struct OFILE * ofile)
+{
+ if (vflag > 1)
+ printf("AddARSymbol(%s, %s)\n", sym, ofile->o_name);
+
+ return AddSymbolToHashList(&arSymbol, sym, ofile, 0L, 0);
+}
+
+
+//
+// Generate hash value from the 1st 15 characters of the symbol modulo the
+// number of buckets in the hash.
+//
+int GetHash(char * s)
+{
+ // For this to be consistent, the symbol MUST be zeroed out beforehand!
+ char c[SYMLEN];
+ memset(c, 0, SYMLEN);
+ strcpy(c, s);
+
+ int i = (c[0] + c[1] + c[2] + c[3] + c[4] + c[5] + c[6] + c[7] + c[8]
+ + c[9] + c[10] + c[11] + c[12] + c[13] + c[14]) % NBUCKETS;
+ return i;
+}
+
+
+//
+// Lookup a symbol in the hash table.
+// Returns either a pointer to the HREC or NULL if not found.
+//
+struct HREC * LookupHREC(char * symbol)
+{
+ struct HREC * hptr = htable[GetHash(symbol)];
+
+ while (hptr != NULL)
+ {
+//This is utter failure...
+// if (symcmp(symbol, hptr->h_sym)) <-- left here for giggles :D - LinkoVitch
+ // Return hash record pointer if found
+ if (strcmp(symbol, hptr->h_sym) == 0)
+ return hptr;
+
+ hptr = hptr->h_next;
+ }
+
+ return NULL;
+}
+
+
+//
+// Lookup a symbol in the AR symbol table.
+// Returns either a pointer to the HREC or NULL if not found.
+//
+struct HREC * LookupARHREC(char * symbol)
+{
+ struct HREC * hptr = arSymbol;//htable[GetHash(symbol)];
+
+ while (hptr != NULL)
+ {
+ // Return hash record pointer if found
+ if (strcmp(symbol, hptr->h_sym) == 0)
+ return hptr;
+
+ hptr = hptr->h_next;
+ }
+
+ return NULL;
+}
+
+
+//
+// Add symbol to the hash table if it doesn't already exist, otherwise decide
+// what to do since it's already defined in another unit.
+//
+int DealWithSymbol(char * sym, long type, long value, struct OFILE * ofile)
+{
+ if (vflag > 1)
+ {
+ printf("DealWithSymbol(%s,%s,%lx,", sym, ofile->o_name, value);
+ printf("%x,%s)\n", (unsigned int)type, (isglobal(type) ? "GLOBAL" : "COMMON"));
+ }
+
+ struct HREC * hptr = LookupHREC(sym);
+
+ if (hptr == NULL)
+ return AddSymbolToHashList(&htable[GetHash(sym)], sym, ofile, value, type);
+
+ // Symbol is already in table... Figure out how to handle!
+ 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;
+ }
+ // They're both global [WRONG! Passed in one is global]
+// else if (!iscommon(type))
+//is this now right??
+ else if (!iscommon(type) && !iscommon(hptr->h_type))
+ {
+ // 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);
+ }
+ // They're both common
+ else
+ {
+ 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)). [??? O_o]
+//
+int AddSymbols(struct OFILE * Ofile)
+{
+ struct HREC * hptr; // Hash record pointer
+ char symbol[SYMLEN];
+
+ if (vflag > 1)
+ printf("Add symbols for file %s\n", Ofile->o_name);
+
+ // Get base pointer, start of sym fixups
+ char * ptr = Ofile->o_image + 32
+ + Ofile->o_header.tsize
+ + Ofile->o_header.dsize
+ + Ofile->o_header.absrel.reloc.tsize
+ + Ofile->o_header.absrel.reloc.dsize;
+ char * sfix = ptr; // Set symbol fixup pointer
+ char * sstr = sfix + Ofile->o_header.ssize; // Set symbol table pointer
+ long nsymbols = Ofile->o_header.ssize / 12; // Obtain number of symbols
+
+ while (nsymbols)
+ {
+ long index = getlong(sfix); // Get symbol string index
+ long type = getlong(sfix + 4); // Get symbol type
+ long value = getlong(sfix + 8); // Get symbol value
+ memset(symbol, 0, SYMLEN);
+ strcpy(symbol, sstr + index);
+
+ if ((Ofile->isArchiveFile) && !(Ofile->o_flags & O_USED))
+ {
+ if ((type & T_EXT) && (type & (T_SEG | T_ABS)))
+ if (AddARSymbol(symbol, Ofile))
+ return 1;
+ }
+ else if (type == T_EXT)
+ {
+ // External symbal that is *not* in the current unit
+ hptr = LookupHREC(symbol);
+
+ if (hptr != NULL)
+ hptr->h_ofile->o_flags |= O_USED; // Mark .o file as used
+ // Otherwise add to unresolved list
+ else if (AddUnresolvedSymbol(symbol, Ofile))
+ return 1; // Error if addition failed
+ }
+ else if ((type & T_EXT) && (type & (T_SEG | T_ABS)))
+ {
+ // Symbol in the current unit that is also EXPORTED
+ if (DealWithSymbol(symbol, type, value, Ofile))
+ return 1; // Error if addition failed
+ }
+
+ sfix += 12; // Increment symbol fixup pointer
+ nsymbols--; // Decrement num of symbols to process
+ }
+
+ // Success loading symbols
+ return 0;
+}
+
+
+//
+// Process object file for symbols
+//
+int DoItem(struct OFILE * obj)
+{
+ // Allocate memory for object record ptr
+ struct OFILE * Ofile = new_ofile();
+
+ if (Ofile == NULL)
+ {
+ printf("Out of memory while processing %s\n", obj->o_name);
+ return 1;
+ }
+
+ // Starting after all pathnames, etc., copy .o file name to Ofile
+ char * temp = path_tail(obj->o_name);
+
+ // Check filename length
+ if (strlen(temp) > FNLEN - 1)
+ {
+ printf("File name too long: %s\n", temp);
+ return 1;
+ }
+
+ // Check archive name length
+ if (strlen(obj->o_arname) > FNLEN - 1)
+ {
+ printf("Archive name too long: %s\n", obj->o_arname);
+ return 1;
+ }
+
+ strcpy(Ofile->o_name, temp); // Store filename
+ strcpy(Ofile->o_arname, obj->o_arname); // Store archive name
+
+ // Initialise object record information
+ Ofile->o_next = NULL;
+ Ofile->o_tbase = 0;
+ Ofile->o_dbase = 0;
+ Ofile->o_bbase = 0;
+ Ofile->o_flags = obj->o_flags;
+ Ofile->o_image = obj->o_image;
+ Ofile->isArchiveFile = obj->isArchiveFile;
+ char * ptr = obj->o_image;
+
+ // Don't do anything if this is just an ARCHIVE marker, just add the file
+ // to the olist
+ // (Shamus: N.B.: it does no such ARCHIVE thing ATM)
+ if (!(obj->o_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) && wflag)
+ {
+ 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 (AddSymbols(Ofile))
+ return 1;
+ }
+
+ // Add this file to the olist
+ if (olist == NULL)
+ olist = Ofile;
+ else
+ olast->o_next = Ofile;
+
+ olast = Ofile;
+ return 0;
+}
+
+
+//
+// Handle items in processing list.
+//
+// After loading all objects, archives & include files, we now go and process
+// each item on the processing list (plist). Once this is done, we go through
+// any unresolved symbols left and see if they have shown up.
+//
+int ProcessLists(void)
+{
+ // Process object file list first (adds symbols from each unit & creates
+ // the olist)
+ while (plist != NULL)
+ {
+ if (DoItem(plist))
+ return 1;
+
+ struct OFILE * ptemp = plist;
+ plist = plist->o_next;
+ free(ptemp);
+ }
+
+ struct HREC * uptr;
+
+ // Process the unresolved symbols list. This may involve pulling in symbols
+ // from any included .a units. Such units are lazy linked by default; we
+ // generally don't want everything they provide, just what's referenced.
+ for(uptr=unresolved; uptr!=NULL; )
+ {
+ if (vflag > 1)
+ printf("LookupHREC(%s) => ", uptr->h_sym);
+
+ struct HREC * htemp = LookupHREC(uptr->h_sym);
+
+ if (htemp != NULL)
+ {
+ // Found it in the symbol table!
+ if (vflag > 1)
+ printf("%s in %s (=$%06X)\n", (isglobal(htemp->h_type) ? "global" : "common"), htemp->h_ofile->o_name, htemp->h_value);
+
+ // Mark the .o unit that the symbol is in as seen & remove from the
+ // unresolved list
+ htemp->h_ofile->o_flags |= O_USED;
+ uptr = RemoveUnresolvedSymbol(uptr);
+ }
+ else
+ {
+ if (vflag > 1)
+ printf("NULL\n");
+
+ // Check to see if the unresolved symbol is on the AR symbol list.
+ htemp = LookupARHREC(uptr->h_sym);
+
+ // If the unresolved symbol is in a .o unit that is unused, we can
+ // drop it; same if the unresolved symbol is in the exported AR
+ // symbol list. Otherwise, go to the next unresolved symbol.
+ if (!(uptr->h_ofile->o_flags & O_USED) || (htemp != NULL))
+ uptr = RemoveUnresolvedSymbol(uptr);
+ else
+ uptr = uptr->h_next;
+
+ // Now that we've possibly deleted the symbol from unresolved list
+ // that was also in the AR list, we add the symbols from this .o
+ // unit to the symbol table, mark the .o unit as used, and restart
+ // scanning the unresolved list as there is a good possibility that
+ // the symbols in the unit we're adding has unresolved symbols as
+ // well.
+ if (htemp != NULL)
+ {
+ htemp->h_ofile->o_flags |= O_USED;
+ AddSymbols(htemp->h_ofile);
+ uptr = unresolved;
+ }
+ }
+ }
+
+ // Show files used if the user requests it.
+ if (vflag > 1)
+ {
+ printf("Files used:\n");
+ struct OFILE * filePtr = olist;
+
+ while (filePtr != NULL)
+ {
+ if (filePtr->o_flags & O_USED)
+ {
+ printf(" %s%s%s\n", filePtr->o_name, (filePtr->isArchiveFile ? ":" : ""), (filePtr->isArchiveFile ? filePtr->o_arname : nullStr));
+ }
+
+ filePtr = filePtr->o_next;
+ }
+ }
+
+ return 0;
+}
+
+
+//
+// Extract filename from path
+//
+char * path_tail(char * name)
+{
+ char * temp = strrchr(name, PATH_DELIMITER);
+
+ // Return what was passed in if path delimiter was not found
+ if (temp == NULL)
+ return name;
+
+ return temp + 1;
+}
+
+
+//
+// Add input file to processing list
+//
+int AddToProcessingList(char * ptr, char * fname, char * arname, uint8_t arFile)
+{
+ if (plist == NULL)
+ {
+ // First time object record allocation
+ plist = new_ofile();
+ plast = plist;
+ }
+ else
+ {
+ // Next object record allocation
+ plast->o_next = new_ofile();
+ plast = plast->o_next;
+ }
+
+ if (plast == NULL)
+ {
+ printf("Out of memory.\n"); // Error if memory allocation fails
+ return 1;
+ }
+
+ fname = path_tail(fname);
+ arname = path_tail(arname);
+
+ if (strlen(fname) > FNLEN - 1)
+ {
+ // Error on excessive filename length
+ printf("File name too long: %s (sorry!)\n", fname);
+ return 1;
+ }
+
+ if (strlen(arname) > FNLEN - 1)
+ {
+ // Error on excessive filename length
+ printf("AR file name too long: %s (sorry!)\n", arname);
+ return 1;
+ }
+
+ strcpy(plast->o_name, fname); // Store filename sans path
+ strcpy(plast->o_arname, arname); // Store archive name sans path
+ plast->o_image = ptr; // Store data pointer
+ plast->o_flags = (arFile ? 0 : O_USED); // File is used if NOT in archive
+ plast->o_next = NULL; // Initialise next record pointer
+ plast->isArchiveFile = arFile; // Shamus: Temp until can sort it out
+
+ 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 LoadInclude(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 = FileSize(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
+ // Allocate object image memory
+ if ((ptr = calloc(size, 1)) == NULL)
+ {
+ printf("Out of memory while including %s\n", fname);
+ close(handle);
+ return 1;
+ }
+
+ // Read in binary data
+ if (read(handle, ptr + 32, fsize) != fsize)
+ {
+ printf("File read error on %s\n", fname);
+ close(handle);
+ free(ptr);
+ return 1;
+ }
+
+ close(handle);
+
+ 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