--- /dev/null
+///////////////////////////////////////////////////////////////////////////////
+// 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)j<dosymi; j++)
+ dbgsymbase += obj_segsize[j][0];
+
+ switch (type & 0xFF000000)
+ {
+ case 0x64000000:
+ value = tval + dbgsymbase;
+ break;
+ case 0x44000000:
+ case 0x46000000:
+ case 0x48000000:
+ value = tval + dbgsymbase + value;
+ default:
+ break;
+ }
+
+ putlong(symptr + 8, value);
+ }
+ else
+ { // NON-DEBUG SYMBOL
+ // Now make modifications to the symbol value, local or global, based on the segment sizes
+ // of the object file currently being processed.
+ switch (type & T_SEG)
+ {
+ case 0x02000000: // Absolute value
+ break;
+ case T_TEXT: // TEXT segment
+ if(type & 0x01000000) value = tbase + tsegoffset + value;
+ else value = tbase + tsegoffset + value;
+ putlong(symptr + 8, value);
+ break;
+ case T_DATA: // DATA segment
+ if(type & 0x01000000) value = dbase + dsegoffset + value;
+ else value = dbase + dsegoffset + (value - ofile->o_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 <text> <data> <bss> 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 <fname> add contents of <fname> 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 <fname> <label> incbin <fname> and set <label>\n");
+ printf(" -l add local symbols\n");
+ printf(" -m produce load symbols map\n");
+ printf(" -n output no file header to .abs file\n");
+ printf(" -o <fname> set output name\n");
+ printf(" -r<size> section alignment size\n");
+ printf(" w: word (2 bytes)\n");
+ printf(" l: long (4 bytes)\n");
+ printf(" p: phrase (8 bytes, default alignment)\n");
+ printf(" d: double phrase (16 bytes)\n");
+ printf(" q: quad phrase (32 bytes)\n");
+ printf(" -s output only global symbols\n");
+ printf(" -v set verbose mode\n");
+ printf(" -z suppress banner\n");
+ printf("\n\n");
+}
+
+
+//
+// --- Application Exit -------------------------------------------------------
+//
+void rln_exit(void)
+{
+ char tempbuf[128];
+
+ // Display link status if verbose mode
+ if (vflag)
+ printf("Link %s.\n", errflag ? "aborted" : "complete");
+
+ // Wait for return key if requested
+ if (waitflag)
+ {
+ printf("\nPress the <return> key to continue. ");
+ fgets(tempbuf, 128, stdin);
+ }
+
+ exit(errflag);
+}
+
+
+//
+// --- Determine Processor Endianess ------------------------------------------
+//
+int get_endianess(void)
+{
+ int i = 1;
+ char * p = (char *)&i;
+
+ if (p[0] == 1)
+ return 0; // LITTLE
+
+ return 1; // BIG
+}
+
+
+//
+// --- Application Code Starts Here -------------------------------------------
+//
+int main(int argc, char * argv[])
+{
+ char * s = NULL; // String pointer for "getenv"
+ struct HREC * utemp; // Temporary hash record pointer
+ struct OHEADER * header; // Pointer to output header structure
+
+ endian = get_endianess(); // Get processor endianess
+ cmdlnexec = argv[0]; // Obtain executable name
+ s = getenv("RLNPATH");
+
+ if(s) // Attempt to obtain env variable
+ strcpy(libdir, s); // Store it if found
+
+ if (doargs(argc, argv))
+ { // Parse the command line
+ errflag = 1;
+ rln_exit();
+ }
+
+ if (!zflag && !vflag)
+ {
+ display_version(); // Display version information
+ versflag = 1; // We've dumped the version banner
+ }
+
+ if (flush_handles())
+ { // Process in specified files/objects
+ errflag = 1;
+ rln_exit();
+ }
+
+ if (dolist())
+ { // Remove elements from unresolved list
+ errflag = 1;
+ rln_exit();
+ }
+
+ if (olist == NULL)
+ { // Check that there is something to link
+ printf("No object files to link.\n\n");
+ errflag = 1;
+ rln_exit();
+ }
+
+ if (unresolved != NULL)
+ { // Report unresolved externals
+ printf("UNRESOLVED SYMBOLS\n");
+
+ if (uflag < 2)
+ { // Don't list them if two -u's or more
+ utemp = unresolved;
+
+ while (utemp != NULL)
+ {
+ printf("\t%s (",utemp->h_sym);
+ put_name(utemp->h_ofile);
+ printf(")\n");
+ utemp = utemp->h_next;
+ }
+ }
+
+ if (!uflag)
+ {
+ errflag = 1;
+ rln_exit();
+ }
+ }
+
+ if ((header = make_ofile()) == NULL)
+ { // Make one output file from input objs
+ errflag = 1;
+ rln_exit();
+ }
+
+ if (pflag)
+ { // Partial linking
+ printf("TO DO:Partial linking\n");
+ errflag = 1;
+ }
+ else if (!aflag)
+ { // Relocatable linking
+ printf("TO DO:Relocatable linking\n");
+ errflag = 1;
+ }
+ else
+ { // Absolute linking
+ if (vflag)
+ {
+ printf("Absolute linking ");
+
+ if (cflag)
+ printf("(COF)\n");
+ else
+ printf("(ABS)\n");
+ }
+
+ if (vflag > 1)
+ printf("Header magic is 0x%04X\n", (unsigned int)header->magic);
+
+ if (write_ofile(header))
+ errflag = 1;
+ }
+
+ if (mflag) // Display the loaded symbols map
+ if (write_map(header))
+ errflag = 1;
+
+ if (vflag)
+ { // Display segment size summary
+ printf("\n");
+ printf("+---------+----------+----------+----------+\n");
+ printf("| Segment | TEXT | DATA | BSS |\n");
+ printf("| Sizes |----------+----------+----------|\n");
+ printf("| (Hex) | %8X | %8X | %8X |\n", (unsigned int)header->tsize, (unsigned int)header->dsize, (unsigned int)header->bsize);
+ printf("+---------+----------+----------+----------+\n\n");
+ }
+
+ free(header); // Free allocated memory
+ rln_exit(); // Perform application exit
+}
projects / rln / commitdiff