2 // RLN - Reboot's Linker for the Atari Jaguar console system
3 // Copyright (C) 199x, Allan K. Pratt, 2014-2015 Reboot & Friends
9 unsigned errflag = 0; // Error flag, goes TRUE on error
10 unsigned waitflag = 0; // Wait for any keypress flag
11 unsigned versflag = 0; // Version banner has been shown flag
12 unsigned aflag = 0; // Absolute linking flag
13 unsigned bflag = 0; // Don't remove mulitply def locals flag
14 unsigned cflag = 0; // COF executable
15 unsigned dflag = 0; // Wait for key after link flag
16 unsigned gflag = 0; // Source level debug include flag
17 unsigned lflag = 0; // Add local symbols to output flag
18 unsigned mflag = 0; // Produce symbol load map flag
19 unsigned oflag = 0; // Output filename specified
20 unsigned rflag = 0; // Segment alignment size flag
21 unsigned sflag = 0; // Output only global symbols
22 unsigned vflag = 0; // Verbose flag
23 unsigned wflag = 0; // Show warnings flag
24 unsigned zflag = 0; // Suppress banner flag
25 unsigned pflag = 0, uflag = 0; // Unimplemented flags (partial link, don't abort on unresolved symbols)
26 unsigned hd = 0; // Index of next file handle to fill
27 unsigned secalign = 7; // Section Alignment (8=phrase)
28 unsigned tbase = 0; // TEXT base address
29 unsigned dbase = 0; // DATA base address
30 unsigned bbase = 0; // BSS base address
31 unsigned textoffset = 0; // COF TEXT segment offset
32 unsigned dataoffset = 0; // COF DATA segment offset
33 unsigned bssoffset = 0; // COF BSS segment offset
34 unsigned displaybanner = 1; // Display version banner
35 unsigned symoffset = 0; // Symbol table offset in output file
36 unsigned dbgsymbase = 0; // Debug symbol base address
37 int noheaderflag = 0; // No header flag for ABS files
38 int hflags; // Value of the arg to -h option
39 int ttype, dtype, btype; // Type flag: 0, -1, -2, -3, -4
40 int tval, dval, bval; // Values of these abs bases
41 int hflag[NHANDLES]; // True for include files
42 int handle[NHANDLES]; // Open file handles
43 int textsize, datasize, bsssize; // Cumulative segment sizes
44 char libdir[FARGSIZE * 3]; // Library directory to search
45 char ofile[FARGSIZE]; // Output file name (.o)
46 char * name[NHANDLES]; // Associated file names
47 char * cmdlnexec = NULL; // Executable name - pointer to ARGV[0]
48 char * hsym1[SYMLEN]; // First symbol for include files
49 char * hsym2[SYMLEN]; // Second symbol for include files
50 struct OFILE * plist = NULL; // Object image list pointer
51 struct OFILE * plast; // Last object image list pointer
52 struct OFILE * olist = NULL; // Pointer to first object file in list
53 struct OFILE * olast; // Pointer to last object file in list
56 struct HREC * htable[NBUCKETS]; // Hash table
57 struct HREC * unresolved = NULL; // Pointer to unresolved hash list
58 char * ost; // Output symbol table
59 char * ost_ptr; // Output symbol table; current pointer
60 char * ost_end; // Output symbol table; end pointer
61 char * oststr; // Output string table
62 char * oststr_ptr; // Output string table; current pointer
63 char * oststr_end; // Output string table; end pointer
64 int ost_index = 0; // Index of next ost addition
65 uint8_t nullStr[1] = "\x00"; // Empty string
66 struct HREC * arSymbol = NULL; // Pointer to AR symbol table
69 // Function prototypes
70 struct HREC * LookupHREC(char *);
71 char * PathTail(char *);
73 void ShowVersion(void);
77 // Get a long word from memory
79 static inline uint32_t GetLong(uint8_t * src)
81 return (src[0] << 24) | (src[1] << 16) | (src[2] << 8) | src[3];
86 // Put a long word into memory
88 static inline void PutLong(uint8_t * dest, uint32_t val)
90 *dest++ = (uint8_t)(val >> 24);
91 *dest++ = (uint8_t)(val >> 16);
92 *dest++ = (uint8_t)(val >> 8);
98 // Get a word from memory
100 static inline uint16_t GetWord(uint8_t * src)
102 return (src[0] << 8) | src[1];
107 // Put a word into memory
109 static inline void PutWord(uint8_t * dest, uint16_t val)
111 *dest++ = (uint8_t)(val >> 8);
112 *dest = (uint8_t)val;
117 // Find passed in file's length in bytes
118 // N.B.: This also resets the file's pointer to the start of the file
120 long FileSize(int fd)
122 long size = lseek(fd, 0, SEEK_END);
123 lseek(fd, 0, SEEK_SET);
130 // For this object file, add symbols to the output symbol table after
131 // relocating them. Returns TRUE if OSTLookup returns an error (-1).
133 int DoSymbols(struct OFILE * ofile)
140 uint32_t tsoSave, dsoSave, bsoSave;
142 // Point to first symbol record in the object file
143 char * symptr = (ofile->o_image + 32
144 + ofile->o_header.tsize
145 + ofile->o_header.dsize
146 + ofile->o_header.absrel.reloc.tsize
147 + ofile->o_header.absrel.reloc.dsize);
149 // Point to end of symbol record in the object file
150 char * symend = symptr + ofile->o_header.ssize;
152 uint32_t tsegoffset = ofile->segBase[TEXT];
153 uint32_t dsegoffset = ofile->segBase[DATA];
154 uint32_t bsegoffset = ofile->segBase[BSS];
156 // Save segment vars, so we can restore them if needed
157 tsoSave = tsegoffset, dsoSave = dsegoffset, bsoSave = bsegoffset;
159 // Process each record in the object's symbol table
160 for(; symptr!=symend; symptr+=12)
162 index = GetLong(symptr + 0); // Obtain symbol string index
163 type = GetLong(symptr + 4); // Obtain symbol type
164 value = GetLong(symptr + 8); // Obtain symbol value
166 // Global/External symbols have a pre-processing stage
167 // N.B.: This destroys the t/d/bsegoffset discovered above. So if a
168 // local symbol follows a global/exported one, it gets wrong
169 // info! [Should be FIXED now]
170 if (type & 0x01000000)
172 // Obtain the string table index for the relocation symbol, look
173 // for it in the globals hash table to obtain information on that
175 hptr = LookupHREC(symend + index);
179 // Try to find it in the OST
180 int ostIndex = OSTLookup(symend + index);
184 printf("DoSymbols(): Symbol not found in hash table: '%s' (%s)\n", symend + index, ofile->o_name);
189 printf("DoSymbols(): Skipping symbol '%s' (%s) found in OST...\n", symend + index, ofile->o_name);
191 // If the symbol is not in any .a or .o units, it must be one
192 // of the injected ones (_TEXT_E, _DATA_E, or _BSS_E), so skip
193 // it [or maybe not? In verbose mode, we see nothing...!]
197 tsegoffset = hptr->h_ofile->segBase[TEXT];
198 dsegoffset = hptr->h_ofile->segBase[DATA];
199 bsegoffset = hptr->h_ofile->segBase[BSS];
201 // Update type with global type
204 // Remove global flag if absolute
205 if (type == (T_GLBL | T_ABS))
208 // If the global/external has a value then update that value in
209 // accordance with the segment sizes of the object file it
213 switch (hptr->h_type & 0x0E000000)
217 value = hptr->h_value;
220 value = hptr->h_value - hptr->h_ofile->o_header.tsize;
223 value = hptr->h_value
224 - (hptr->h_ofile->o_header.tsize
225 + hptr->h_ofile->o_header.dsize);
229 printf("DoSymbols: No adjustment made for symbol: %s (%s) = %X\n", symend + index, ofile->o_name, hptr->h_value);
233 // If *not* a global/external, use the info from passed in object
235 tsegoffset = tsoSave, dsegoffset = dsoSave, bsegoffset = bsoSave;
237 // Process and update the value dependent on whether the symbol is a
238 // debug symbol or not
239 // N.B.: Debug symbols are currently not supported
240 if (type & 0xF0000000)
243 // Set the correct debug symbol base address (TEXT segment)
247 for(j=0; (unsigned)j<dosymi; j++)
248 dbgsymbase += obj_segsize[j][0];
250 dbgsymbase = ofile->segBase[TEXT];
253 switch (type & 0xFF000000)
256 value = tval + dbgsymbase;
261 value = tval + dbgsymbase + value;
266 PutLong(symptr + 8, value);
271 // Now make modifications to the symbol value, local or global,
272 // based on the segment sizes of the object file currently being
274 switch (type & T_SEG)
279 value = tbase + tsegoffset + value;
280 PutLong(symptr + 8, value);
284 value = dbase + dsegoffset + value;
286 value = dbase + dsegoffset + (value
287 - ofile->o_header.tsize);
289 PutLong(symptr + 8, value);
293 value = bbase + bsegoffset + value;
295 value = bbase + bsegoffset
296 + (value - (ofile->o_header.tsize
297 + ofile->o_header.dsize));
299 PutLong(symptr + 8, value);
306 // Add to output symbol table if global/extern, or local flag is set
307 if (isglobal(type) || lflag)
310 printf("DoSymbols: Adding symbol: %s (%s) to OST...\n", symend + index, ofile->o_name);
312 index = OSTAdd(symend + index, type, value);
316 printf("DoSymbols(): Failed to add symbol '%s' to OST!\n", symend + index);
327 // Free up hash memory
329 void FreeHashes(void)
333 for(i=0; i<NBUCKETS; i++)
335 struct HREC * hptr = htable[i];
339 struct HREC * htemp = hptr->h_next;
348 // Add all global and external symbols to the output symbol table
349 // [This is confusing--is it adding globals or locals? common == local!
350 // but then again, we see this in the header:
351 // #define T_COMMON (T_GLOBAL | T_EXTERN) but that could be just bullshit.]
353 // Common symbols have a different number in the "value" field of the symbol
354 // table (!0) than purely external symbols do (0). So you have to look at the
355 // type (T_GLBL) *and* the value to determine if it's a common symbol.
362 for(i=0; i<NBUCKETS; i++)
364 for(hptr=htable[i]; hptr!=NULL; hptr=hptr->h_next)
366 //NO! if (iscommon(hptr->h_type))
367 if (isglobal(hptr->h_type))// || isextern(hptr->h_type))
369 // Skip if in *.a file... (does nothing)
370 //if (hptr->h_ofile->isArchiveFile)
373 //Is this true? Couldn't an absolute be exported???
374 if (hptr->h_type == (T_GLBL | T_ABS))
375 hptr->h_type = T_ABS; // Absolutes *can't* be externals
377 if (OSTAdd(hptr->h_sym, hptr->h_type, hptr->h_value) == -1)
388 // Add a symbol's name, type, and value to the OST.
389 // Returns the index of the symbol in OST, or -1 for error.
391 int OSTAdd(char * name, int type, long value)
393 int ost_offset_p, ost_offset_e = 0; // OST table offsets for position calcs
394 int ostresult; // OST index result
395 int slen = strlen(name);
397 // If the OST or OST string table has not been initialised then do so
400 ost = malloc(OST_BLOCK);
401 oststr = malloc(OST_BLOCK);
405 printf("OST memory allocation error.\n");
411 printf("OSTSTR memory allocation error.\n");
415 ost_ptr = ost; // Set OST start pointer
416 ost_end = ost + OST_BLOCK; // Set OST end pointer
418 PutLong(oststr, 0x00000004); // Just null long for now
419 oststr_ptr = oststr + 4; // Skip size of str table long (incl null long)
420 PutLong(oststr_ptr, 0x00000000); // Null terminating long
421 oststr_end = oststr + OST_BLOCK;
425 // If next symbol record exceeds current allocation then expand symbol
426 // table and/or symbol string table.
427 ost_offset_p = (ost_ptr - ost);
428 ost_offset_e = (ost_end - ost);
430 // 3 x uint32_t (12 bytes)
431 if ((ost_ptr + 12) > ost_end)
433 // We want to allocate the current size of the OST + another block.
434 ost = realloc(ost, ost_offset_e + OST_BLOCK);
438 printf("OST memory reallocation error.\n");
442 ost_ptr = ost + ost_offset_p;
443 ost_end = (ost + ost_offset_e) + OST_BLOCK;
446 ost_offset_p = (oststr_ptr - oststr);
447 ost_offset_e = (oststr_end - oststr);
449 // string length + terminating NULL + uint32_t (terminal long)
450 if ((oststr_ptr + (slen + 1 + 4)) > oststr_end)
452 oststr = realloc(oststr, ost_offset_e + OST_BLOCK);
456 printf("OSTSTR memory reallocation error.\n");
460 oststr_ptr = oststr + ost_offset_p;
461 oststr_end = (oststr + ost_offset_e) + OST_BLOCK;
465 // If this is a debug symbol and the include debug symbol flag (-g) is not
466 // set then do nothing
467 if ((type & 0xF0000000) && !gflag)
473 // Get symbol index in OST, if any (-1 if not found)
474 ostresult = OSTLookup(name);
476 // If the symbol is in the output symbol table and the bflag is set
477 // (don't remove multiply defined locals) and this is not an
478 // external/global symbol *** OR *** the symbol is not in the output
479 // symbol table then add it.
480 if (((ostresult != -1) && bflag && !(type & 0x01000000))
481 || ((ostresult != -1) && gflag && (type & 0xF0000000))
482 || (ostresult == -1))
484 if ((type & 0xF0000000) == 0x40000000)
485 PutLong(ost_ptr, 0x00000000); // Zero string table offset for dbg line
487 PutLong(ost_ptr, (oststr_ptr - oststr)); // String table offset of symbol string
489 PutLong(ost_ptr + 4, type);
490 PutLong(ost_ptr + 8, value);
493 // If the symbol type is anything but a debug line information
494 // symbol then write the symbol string to the string table
495 if ((type & 0xF0000000) != 0x40000000)
497 strcpy(oststr_ptr, name); // Put symbol name in string table
498 *(oststr_ptr + slen) = '\0'; // Add null terminating character
499 oststr_ptr += (slen + 1);
500 PutLong(oststr_ptr, 0x00000000); // Null terminating long
501 PutLong(oststr, (oststr_ptr - oststr)); // Update size of string table
505 printf("OSTAdd: (%s), type=$%08X, val=$%08lX\n", name, type, value);
507 // is ost_index pointing one past?
508 // does this return the same regardless of if its ++n or n++?
509 // no. it returns the value of ost_index *before* it's incremented.
518 // Return the index of a symbol in the output symbol table
519 // N.B.: This is a 1-based index! (though there's no real reason for it to be)
521 int OSTLookup(char * sym)
524 int stro = 4; // Offset in string table
526 for(i=0; i<ost_index; i++)
528 if (strcmp(oststr + stro, sym) == 0)
531 stro += strlen(oststr + stro) + 1;
539 // Add unresolved externs to the output symbol table
540 // N.B.: Only adds unresolved symbols *if* they're not already in the OST
542 int DoUnresolved(void)
544 struct HREC * hptr = unresolved;
546 // Add to OST while unresolved list is valid
549 if (OSTAdd(hptr->h_sym, T_GLBL, 0L) == -1)
553 printf("DoUnresolved(): '%s' (%s:$%08X) in OST\n", hptr->h_sym, hptr->h_ofile->o_name, hptr->h_type);
555 struct HREC * htemp = hptr->h_next;
566 // Update object file TEXT and DATA segments based on relocation records. Take
567 // in an OFILE header and flag (T_TEXT, T_DATA) to process. Return (0) is
568 // successful or non-zero (1) if failed.
570 int RelocateSegment(struct OFILE * ofile, int flag)
572 char * symtab; // Start of symbol table
573 char * symbols; // Start of symbols
574 char * sptr; // Start of segment data
575 char * rptr; // Start of segment relocation records
576 unsigned symidx; // Offset to symbol
577 unsigned addr; // Relocation address
578 unsigned rflg; // Relocation flags
579 unsigned olddata; // Old segment data at reloc address
580 unsigned newdata = 0; // New segment data at reloc address
581 unsigned pad; // Temporary to calculate phrase padding
583 char sym[SYMLEN]; // String for symbol name/hash search
584 int ssidx; // Segment size table index
585 unsigned glblreloc; // Global relocation flag
586 unsigned absreloc; // Absolute relocation flag
587 unsigned relreloc; // Relative relocation flag
588 unsigned swcond; // Switch statement condition
589 unsigned relocsize; // Relocation record size
591 // If there is no TEXT relocation data for the selected object file segment
592 // then update the COF TEXT segment offset allowing for the phrase padding
593 if ((flag == T_TEXT) && !ofile->o_header.absrel.reloc.tsize)
595 // SCPCD : we should not increment the textoffset before the end of processing the object file, else data section will point to wrong textoffset
599 // If there is no DATA relocation data for the selected object file segment
600 // then update the COF DATA and BSS segment offsets allowing for the phrase
602 if ((flag == T_DATA) && !ofile->o_header.absrel.reloc.dsize)
604 // SCPCD : the T_DATA is the last section of the file, we can now increment the textoffset, dataoffset and bssoffset
606 // TEXT segment size plus padding
607 pad = ((ofile->o_header.tsize + secalign) & ~secalign);
608 textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize));
611 printf("RelocateSegment(%s, TEXT) : No relocation data\n", ofile->o_name);
613 // DATA segment size plus padding
614 pad = ((ofile->o_header.dsize + secalign) & ~secalign);
615 dataoffset += (ofile->o_header.dsize + (pad - ofile->o_header.dsize));
617 // BSS segment size plus padding
618 pad = ((ofile->o_header.bsize + secalign) & ~secalign);
619 bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize));
622 printf("RelocateSegment(%s, DATA) : No relocation data\n", ofile->o_name);
628 printf("RelocateSegment(%s, %s) : Processing Relocation Data\n",
629 ofile->o_name, flag == T_DATA ? "DATA" : "TEXT");
631 // Obtain pointer to start of symbol table
632 symtab = (ofile->o_image + 32 + ofile->o_header.tsize
633 + ofile->o_header.dsize
634 + ofile->o_header.absrel.reloc.tsize
635 + ofile->o_header.absrel.reloc.dsize);
637 // Obtain pointer to start of symbols
638 symbols = symtab + ofile->o_header.ssize;
640 // Obtain pointer to start of TEXT segment
641 sptr = ofile->o_image + 32;
643 // Obtain pointer to start of TEXT relocation records
644 rptr = sptr + (ofile->o_header.tsize + ofile->o_header.dsize);
646 relocsize = ofile->o_header.absrel.reloc.tsize;
649 printf("RELOCSIZE :: %d Records = %d\n", relocsize, relocsize / 8);
651 // Update pointers if DATA relocation records are being processed
654 sptr += ofile->o_header.tsize; // Start of DATA segment
655 rptr += ofile->o_header.absrel.reloc.tsize; // Start of DATA relocation records
656 relocsize = ofile->o_header.absrel.reloc.dsize;
659 // Process each relocation record for the TEXT segment
660 for(i=0; i<(int)relocsize; i+=8)
662 // Obtain both the relocation address and the relocation flags from the
664 addr = GetLong(rptr);
665 rflg = GetLong(rptr + 4);
666 glblreloc = (rflg & 0x00000010 ? 1 : 0);// Set global relocation flag
667 absreloc = (rflg & 0x00000040 ? 1 : 0); // Set absolute relocation flag
668 relreloc = (rflg & 0x000000A0 ? 1 : 0); // Set relative relocation flag
670 // Additional processing required for global relocations
673 // Obtain the string table index for the relocation symbol, look
674 // for it in the globals hash table to obtain information on that
675 // symbol. For the hash calculation to work correctly it must be
676 // placed in a 'clean' string before looking it up.
677 symidx = GetLong(symtab + ((rflg >> 8) * 12));
678 memset(sym, 0, SYMLEN);
679 strcpy(sym, symbols + symidx);
680 olddata = newdata = 0; // Initialise old and new segment data
681 ssidx = OSTLookup(sym);
682 newdata = GetLong(ost + ((ssidx - 1) * 12) + 8);
685 // Obtain the existing long word segment data and flip words if the
686 // relocation flags indicate it relates to a RISC MOVEI instruction
687 olddata = GetLong(sptr + addr);
690 olddata = _SWAPWORD(olddata);
692 // Process record dependant on segment it relates to; TEXT, DATA or
693 // BSS. Construct a new relocated segment long word based on the
694 // required segment base address, the segment data offset in the
695 // resulting COF file and the offsets from the incoming object file.
696 swcond = (rflg & 0xFFFFFF00);
702 case 0x00000200: // Absolute Value
704 case 0x00000400: // TEXT segment relocation record
705 // SCPCD : the symbol point to a text segment, we should use the textoffset
706 newdata = tbase + textoffset + olddata;
709 case 0x00000600: // DATA segment relocation record
710 newdata = dbase + dataoffset
711 + (olddata - ofile->o_header.tsize);
714 case 0x00000800: // BSS segment relocation record
715 newdata = bbase + bssoffset
716 + (olddata - (ofile->o_header.tsize
717 + ofile->o_header.dsize));
728 // Set absolute (long) or relative (word) address of symbol
731 // Flip the new long word segment data if the relocation record
732 // indicated a RISC MOVEI instruction and place the resulting data
733 // back in the COF segment
735 newdata = _SWAPWORD(newdata);
737 PutLong(sptr + addr, newdata);
741 PutWord(sptr + addr, newdata - tbase - addr - ofile->o_tbase);
744 // Shamus: Let's output some info to aid in debugging this crap
751 sprintf(ssiString, " [ssi:%i]", ssidx);
753 printf("RelocateSegment($%08X): %s, $%08X: $%08X => $%08X%s\n", rflg, (glblreloc ? sym : "(LOCAL)"), addr, olddata, GetLong(sptr + addr), ssiString);
756 rptr += 8; // Point to the next relocation record
759 // Update the COF segment offset allowing for the phrase padding.
760 // SCPCD : we should not increment the textoffset before the end of processing the object file, else data section will point to wrong textoffset
763 // TEXT segment plus padding
764 pad = ((ofile->o_header.tsize + secalign) & ~secalign);
765 textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize));
767 // DATA segment plus padding
768 pad = ((ofile->o_header.dsize + secalign) & ~secalign);
769 dataoffset += (ofile->o_header.dsize + (pad - ofile->o_header.dsize));
771 // BSS segment plus padding
772 pad = ((ofile->o_header.bsize + secalign) & ~secalign);
773 bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize));
776 // Return value, should always be zero
782 // Add a path character to the end of string 's' if it doesn't already end with
783 // one. The last occurrance of '/' or '\' in the string is assumed to be the
786 // This is fucking shit. We know what the path delimiter is, its FUCKING
787 // DEFINED IN THE FUCKING HEADER. FOR FUCKS SAKE. AND YES, HOPE TO GOD THERE'S
788 // ENOUGH SPACE IN THE PASSED IN BUFFER TO HOLD THE EXTRA CHARACTER!
790 void AppendPathDelimiter(char * s)
793 // And hope to God that there's enough space in the buffer...
798 if (*s == '/' || *s == '\\')
812 int length = strlen(s);
814 if (s[length - 1] != PATH_DELIMITER)
816 s[length] = PATH_DELIMITER;
817 s[length + 1] = 0; // BUFFER OVERFLOW!!!! FFFFFFFFUUUUUUUUUUUU
824 // Try to open "name", "name.o", "${libdir}name", "${libdir}name.o". Return the
825 // handle of the file successfully opened. p_name is updated to point to a
826 // malloc()'ed string which is the name which actually got opened. p_name will
827 // return unchanged if the file can't be found.
829 int TryOpenFile(char ** p_name)
831 char * name = *p_name;
833 // Note that libdir will be an empty string if there is none specified
834 char * tmpbuf = malloc(strlen(name) + strlen(libdir) + 3);
838 printf("TryOpenFile() : out of memory\n");
842 strcpy(tmpbuf, name);
843 int hasdot = (strrchr(tmpbuf, '.') > strrchr(tmpbuf, PATH_DELIMITER));
844 // Try to open file as passed first
845 int fd = open(tmpbuf, _OPEN_FLAGS);
852 // Try to open file with '.o' added
853 strcat(tmpbuf, ".o");
854 fd = open(tmpbuf, _OPEN_FLAGS);
860 // Try the libdir only if the name isn't already anchored
861 // Shamus: WTH, this makes no sense... Why the ':'? Is this a Macintosh??
862 // if (*name != '/' && *name != '\\' && !strchr(name, ':'))
863 if ((*name != PATH_DELIMITER) && (strchr(name, ':') == NULL))
865 strcpy(tmpbuf, libdir);
866 // Add a trailing path char if there isn't one already
867 AppendPathDelimiter(tmpbuf);
868 strcat(tmpbuf, name);
870 if ((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0)
875 strcat(tmpbuf, ".o");
877 if ((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0)
882 // Couldn't open file at all
885 // There are worse things... :-P
887 tmpbuf = realloc(tmpbuf, strlen(tmpbuf) + 1);
891 printf("TryOpenFile() : out of memory\n");
901 // What it says on the tin
903 void WriteARName(struct OFILE * p)
905 int flag = *(p->o_arname);
906 printf("%s%s%s", (flag ? (char *)(p->o_arname) : ""), (flag ? ":" : ""), p->o_name);
911 // Collect file names and handles in a buffer so there is less disk activity.
912 // Call DoFile with flag FALSE for normal object files and archives.
913 // Call it with flag TRUE and a symbol name for include files (-i).
915 int DoFile(char * fname, int incFlag, char * sym)
917 // Verbose information
920 printf("DoFile() : `%s' %s", fname, incFlag ? "INCLUDE" : "NORMAL");
923 printf(" symbol %s", sym);
928 // Reached maximum file handles
935 // Attempt to open input file
936 int fd = TryOpenFile(&fname);
940 printf("Cannot find input module %s\n", fname);
944 // The file is open; save its info in the handle and name arrays
946 name[hd] = fname; // This is the name from TryOpenFile()
952 int temp = strlen(sym); // Get symbol length
954 // 100 chars is max length of a symbol
961 // Malloc enough space for two symbols, then build the second one.
962 // Second one may be one character longer than first
963 if ((hsym1[hd] = malloc((long)temp + 1)) == NULL
964 || (hsym2[hd] = malloc((long)temp + 2)) == NULL)
966 printf("DoFile() : out of memory for include-file symbols\n");
970 strcpy(hsym1[hd], sym);
971 strcpy(hsym2[hd], sym);
977 printf("Last char of %s is already 'x': choose another name\n", sym);
985 hsym2[hd][temp] = 'x';
986 hsym2[hd][temp+1] = '\0';
990 // Increment next handle index
998 // Pad TEXT or DATA segment to the requested boundary
1000 int PadSegment(FILE * fd, long segsize, int value)
1006 // Determine the number of padding bytes that are needed
1007 long padsize = (segsize + secalign) & ~secalign;
1008 padsize = padsize - segsize;
1010 // Fill pad array if padding is required
1017 PutWord(padptr, value);
1021 symoffset += padsize;
1023 // Write padding bytes
1024 if (fwrite(padarray, padsize, 1, fd) != 1)
1033 // Write the output file
1035 int WriteOutputFile(struct OHEADER * header)
1037 unsigned osize; // Object segment size
1038 struct OFILE * otemp; // Object file pointer
1039 int i, j; // Iterators
1040 char himage[0x168]; // Header image (COF = 0xA8)
1041 uint32_t tsoff, dsoff, bsoff; // Segment offset values
1042 unsigned index, type, value; // Symbol table index, type and value
1043 short abstype; // ABS symbol type
1044 char symbol[14]; // Symbol record for ABS files
1045 int slen; // Symbol string length
1047 symoffset = 0; // Initialise symbol offset
1049 // Add correct output extension if none
1050 if (strchr(ofile, '.') == NULL)
1053 strcat(ofile, ".cof"); // COF files (a type of abs)
1054 else if (aflag && !cflag)
1055 strcat(ofile, ".abs"); // ABS files
1057 strcat(ofile, ".o"); // Object files (partial linking, etc)
1060 FILE * fd = fopen(ofile, "wb"); // Attempt to open output file
1064 printf("Can't open output file %s\n", ofile);
1068 // Build the output file header
1069 // Absolute (COF) header
1072 tsoff = dsoff = bsoff = 0xA8; // Initialises segment offsets
1074 // Process each object file segment size to obtain a cumulative segment
1075 // size for both the TEXT and DATA segments
1076 for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
1078 dsoff += otemp->segSize[TEXT];
1079 bsoff += otemp->segSize[TEXT] + otemp->segSize[DATA];
1082 // Currently this only builds a COF absolute file. Conditionals and
1083 // additional code will need to be added for ABS and partial linking.
1085 // Build the COF_HDR
1086 PutWord(himage + 0, 0x0150 ); // Magic Number (0x0150)
1087 PutWord(himage + 2, 0x0003 ); // Sections Number (3)
1088 PutLong(himage + 4, 0x00000000 ); // Date (0L)
1089 PutLong(himage + 8, dsoff + header->dsize); // Offset to Symbols Section
1090 PutLong(himage + 12, ost_index); // Number of Symbols
1091 PutWord(himage + 16, 0x001C ); // Size of RUN_HDR (0x1C)
1092 PutWord(himage + 18, 0x0003 ); // Executable Flags (3)
1094 // Build the RUN_HDR
1095 PutLong(himage + 20, 0x00000107 ); // Magic/vstamp
1096 PutLong(himage + 24, header->tsize ); // TEXT size in bytes
1097 PutLong(himage + 28, header->dsize ); // DATA size in bytes
1098 PutLong(himage + 32, header->bsize ); // BSS size in bytes
1099 PutLong(himage + 36, tbase ); // Start of executable, normally @TEXT
1100 PutLong(himage + 40, tbase ); // @TEXT
1101 PutLong(himage + 44, dbase ); // @DATA
1103 // Build the TEXT SEC_HDR
1104 PutLong(himage + 48, 0x2E746578 );
1105 PutLong(himage + 52, 0x74000000 ); // ".text"
1106 PutLong(himage + 56, tbase ); // TEXT START
1107 PutLong(himage + 60, tbase ); // TEXT START
1108 PutLong(himage + 64, header->tsize ); // TEXT size in bytes
1109 PutLong(himage + 68, tsoff ); // Offset to section data in file
1110 PutLong(himage + 72, 0x00000000 ); // Offset to section reloc in file (0L)
1111 PutLong(himage + 76, 0x00000000 ); // Offset to debug lines structures (0L)
1112 PutLong(himage + 80, 0x00000000 ); // Nreloc/nlnno (0L)
1113 PutLong(himage + 84, 0x00000020 ); // SEC_FLAGS: STYP_TEXT
1115 // Build the DATA SEC_HDR
1116 PutLong(himage + 88, 0x2E646174 );
1117 PutLong(himage + 92, 0x61000000 ); // ".data"
1118 PutLong(himage + 96, dbase ); // DATA START
1119 PutLong(himage + 100, dbase ); // DATA START
1120 PutLong(himage + 104, header->dsize ); // DATA size in bytes
1121 PutLong(himage + 108, dsoff ); // Offset to section data in file
1122 PutLong(himage + 112, 0x00000000 ); // Offset to section reloc in file (0L)
1123 PutLong(himage + 116, 0x00000000 ); // Offset to debugging lines structures (0L)
1124 PutLong(himage + 120, 0x00000000 ); // Nreloc/nlnno (0L)
1125 PutLong(himage + 124, 0x00000040 ); // SEC_FLAGS: STYP_DATA
1127 // Build the BSS SEC_HDR
1128 PutLong(himage + 128, 0x2E627373 );
1129 PutLong(himage + 132, 0x00000000 ); // ".bss"
1130 PutLong(himage + 136, bbase ); // BSS START
1131 PutLong(himage + 140, bbase ); // BSS START
1132 PutLong(himage + 144, header->bsize ); // BSS size in bytes
1133 PutLong(himage + 148, bsoff ); // Offset to section data in file
1134 PutLong(himage + 152, 0x00000000 ); // Offset to section reloc in file (0L)
1135 PutLong(himage + 156, 0x00000000 ); // Offset to debugging lines structures (0L)
1136 PutLong(himage + 160, 0x00000000 ); // Nreloc/nlnno (0L)
1137 PutLong(himage + 164, 0x00000080 ); // SEC_FLAGS: STYP_BSS
1139 symoffset = 168; // Update symbol offset
1141 // Absolute (ABS) header
1144 // Build the ABS header
1145 PutWord(himage + 0, 0x601B ); // Magic Number (0x601B)
1146 PutLong(himage + 2, header->tsize ); // TEXT segment size
1147 PutLong(himage + 6, header->dsize ); // DATA segment size
1148 PutLong(himage + 10, header->bsize ); // BSS segment size
1149 PutLong(himage + 14, ost_index * 14 ); // Symbol table size (?)
1150 PutLong(himage + 18, 0x00000000 ); //
1151 PutLong(himage + 22, tbase ); // TEXT base address
1152 PutWord(himage + 26, 0xFFFF ); // Flags (?)
1153 PutLong(himage + 28, dbase ); // DATA base address
1154 PutLong(himage + 32, bbase ); // BSS base address
1156 symoffset = 36; // Update symbol offset
1159 // Write the header, but not if noheaderflag
1162 // Absolute (ABS) header
1165 if (fwrite(himage, 36, 1, fd) != 1)
1168 // Absolute (COF) header
1171 if (fwrite(himage, 168, 1, fd) != 1)
1176 // Write the TEXT segment of each object file
1177 for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
1179 osize = otemp->o_header.tsize;
1181 // Write only if segment has size
1185 printf("Writing TEXT Segment of %s\n", otemp->o_name);
1187 if (fwrite(otemp->o_image + 32, osize, 1, fd) != 1)
1190 // Pad to required alignment boundary
1191 if (PadSegment(fd, osize, 0x0000))
1198 // Write the DATA segment of each object file
1199 for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
1201 osize = otemp->o_header.dsize;
1203 // Write only if the segment has size
1207 printf("Writing DATA Segment of %s\n", otemp->o_name);
1209 if (fwrite((otemp->o_image + 32 + otemp->o_header.tsize), osize, 1, fd) != 1)
1212 // Pad to required alignment boundary
1213 if (PadSegment(fd, osize, 0))
1220 //wha? if (!noheaderflag)
1221 // This isn't quite right, but it's closer...
1222 // (the l and s flags tell the linker to output local & global symbols
1223 // in the symbol table, so it seems there's some other thing that's a
1224 // default set somewhere. Not 100% sure. Setting -s kills -l, BTW...)
1227 // Write the symbols table and string table
1228 // Absolute (COF) symbol/string table
1233 if (fwrite(ost, (ost_ptr - ost), 1, fd) != 1)
1236 if (fwrite(oststr, (oststr_ptr - oststr), 1, fd) != 1)
1240 // Absolute (ABS) symbol/string table
1243 // The symbol and string table have been created as part of the
1244 // DoSymbols() function and the output symbol and string tables are
1245 // in COF format. For an ABS file we need to process through this
1246 // to create the 14 character long combined symbol and string
1247 // table. Format of symbol table in ABS: AAAAAAAATTVVVV, where
1248 // (A)=STRING, (T)=TYPE & (V)=VALUE
1250 for(i=0; i<ost_index; i++)
1252 memset(symbol, 0, 14); // Initialise symbol record
1253 abstype = 0; // Initialise ABS symbol type
1254 slen = 0; // Initialise symbol string length
1255 index = GetLong(ost + (i * 12)); // Get symbol index
1256 type = GetLong((ost + (i * 12)) + 4); // Get symbol type
1258 // Skip debug symbols
1259 if (type & 0xF0000000)
1263 value = GetLong((ost + (i * 12)) + 8);
1264 slen = strlen(oststr + index);
1266 // Get symbol string (maximum 8 chars)
1270 *(symbol + j) = *(oststr + index + j);
1274 for(j=0; j<slen; j++)
1275 *(symbol + j) = *(oststr + index + j);
1278 // Modify to ABS symbol type
1281 case 0x02000000: abstype = (short)ABST_DEFINED; break;
1282 case 0x04000000: abstype = (short)ABST_DEFINED | ABST_TEXT; break;
1283 case 0x05000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_TEXT; break;
1284 case 0x06000000: abstype = (short)ABST_DEFINED | ABST_DATA; break;
1285 case 0x07000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_DATA; break;
1286 case 0x08000000: abstype = (short)ABST_DEFINED | ABST_BSS; break;
1287 case 0x09000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_BSS; break;
1289 printf("warning (WriteOutputFile): ABS, cannot determine symbol type ($%08X) [%s]\n", type, symbol);
1294 PutWord(symbol + 8, abstype); // Write back new ABS type
1295 PutLong(symbol + 10, value); // Write back value
1297 // Write symbol record
1298 if (fwrite(symbol, 14, 1, fd) != 1)
1306 printf("Close error on output file %s\n", ofile);
1313 printf("Write error on output file %s\n", ofile);
1314 fclose(fd); // Try to close output file anyway
1320 // Display the symbol load map
1322 int ShowSymbolLoadMap(struct OHEADER * header)
1324 unsigned i, o; // Inner and outer loop iterators
1325 unsigned c; // Column number
1326 unsigned index; // Symbol string index
1327 unsigned type; // Symbol type
1328 unsigned value; // Symbol value
1329 char * symbol; // Symbol string value
1332 return 0; // Return if no symbols to map
1334 printf("LOAD MAP\n\n");
1336 // Outer loop for each of the symbol areas to map out;
1337 // 0 = NON-RELOCATABLE SYMBOLS
1338 // 1 = TEXT-SEGMENT RELOCATABLE SYMBOLS
1339 // 2 = DATA-SEGMENT RELOCATABLE SYMBOLS
1340 // 3 = BSS-SEGMENT RELOCATABLE SYMBOLS
1343 // Display the correct map header for the symbols being processed
1346 case 0: printf("NON-RELOCATABLE SYMBOLS\n\n"); break;
1347 case 1: printf("TEXT-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
1348 case 2: printf("DATA-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
1349 case 3: printf("BSS-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
1352 c = 0; // Initialise column number
1354 // Inner loop to process each record in the symbol table
1355 for(i=0; i<(unsigned)ost_index; i++)
1357 index = GetLong(ost + (i * 12)); // Get symbol string index
1358 type = GetLong(ost + (i * 12) + 4); // Get symbol type
1359 value = GetLong(ost + (i * 12) + 8); // Get symbol value
1360 symbol = oststr + index; // Get symbol string
1362 // Display only three columns
1369 // If local symbols not included and the type is local then go to
1370 // next symbol record
1371 if (!lflag & !(type & 0x01000000))
1374 // Output each symbol to the display, dependant on type
1378 // Non-relocatable symbols
1379 if (type == 0x02000000 || type == 0x03000000)
1381 printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1387 // TEXT segment relocatable symbols
1388 if (type == 0x04000000 || type == 0x05000000)
1390 printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1396 // DATA segment relocatble symbols
1397 if (type == 0x06000000 || type == 0x07000000)
1399 printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1405 // BSS segment relocatable symbols
1406 if (type == 0x08000000 || type == 0x09000000)
1408 printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1424 // Stuff the (long) value of a string into the value argument. RETURNS TRUE if
1425 // the string doesn't parse. Parses only as a hexadecimal string.
1427 int GetHexValue(char * string, int * value)
1431 while (isxdigit(*string))
1433 if (isdigit(*string))
1435 *value = (*value << 4) + (*string++ - '0');
1439 if (isupper(*string))
1440 *string = tolower(*string);
1442 *value = (*value << 4) + ((*string++ - 'a') + 10);
1446 if (*string != '\0')
1448 printf("Invalid hexadecimal value");
1457 // Create one big .o file from the images already in memory, returning a
1458 // pointer to an OHEADER. Note that the oheader is just the header for the
1459 // output (plus some other information). The text, data, and fixups are all
1460 // still in the ofile images hanging off the global 'olist'.
1462 struct OHEADER * MakeOutputObject()
1464 unsigned tptr, dptr, bptr; // Bases in runtime model
1465 int ret = 0; // Return value
1466 struct OHEADER * header; // Output header pointer
1468 // Initialize cumulative segment sizes
1469 textsize = datasize = bsssize = 0;
1471 // For each object file, accumulate the sizes of the segments but remove
1472 // those object files which are unused
1473 struct OFILE * oprev = NULL; // Init previous obj file list ptr
1474 struct OFILE * otemp = olist; // Set temp pointer to object file list
1476 while (otemp != NULL)
1478 // If the object is unused, discard it...
1479 if ((otemp->o_flags & O_USED) == 0)
1483 printf("Unused object file ");
1485 printf(" discarded.\n");
1488 // Drop the entry from the linked list
1490 olist = otemp->o_next;
1492 oprev->o_next = otemp->o_next;
1494 // Free the object entry if it's not an archive file
1495 if (!otemp->isArchiveFile)
1496 free(otemp->o_image);
1500 // Save accumulated addresses in the object
1501 otemp->segBase[TEXT] = textsize;
1502 otemp->segBase[DATA] = datasize;
1503 otemp->segBase[BSS] = bsssize;
1505 // Increment total of segment sizes ensuring requested alignment
1506 textsize += (otemp->o_header.tsize + secalign) & ~secalign;
1507 datasize += (otemp->o_header.dsize + secalign) & ~secalign;
1508 bsssize += (otemp->o_header.bsize + secalign) & ~secalign;
1512 // Go to next object file list pointer
1513 otemp = otemp->o_next;
1516 // Update base addresses and inject the symbols _TEXT_E, _DATA_E and _BSS_E
1522 // DATA follows TEXT
1523 dbase = tval + textsize;
1527 bbase = tval + textsize + datasize;
1529 // BSS is independent of DATA
1534 // DATA is independent of TEXT
1539 bbase = dval + datasize;
1541 // BSS is independent of DATA
1545 // Inject segment end labels, for C compilers that expect this shite
1546 OSTAdd("_TEXT_E", 0x05000000, tbase + textsize);
1547 OSTAdd("_DATA_E", 0x07000000, dbase + datasize);
1548 OSTAdd("_BSS_E", 0x09000000, bbase + bsssize);
1550 // Place each unresolved symbol in the output symbol table
1551 // N.B.: It only gets here to do this if user passes in -u flag
1552 // [Only used here, once]
1556 // Initialise base addresses
1557 tptr = dptr = bptr = 0;
1559 // For each file, relocate its symbols and add them to the output symbol
1564 while (otemp != NULL)
1566 otemp->o_tbase = tptr;
1567 otemp->o_dbase = dptr;
1568 otemp->o_bbase = bptr;
1569 tptr += (otemp->o_header.tsize + secalign) & ~secalign;
1570 dptr += (otemp->o_header.dsize + secalign) & ~secalign;
1571 bptr += (otemp->o_header.bsize + secalign) & ~secalign;
1573 // For each symbol, (conditionally) add it to the ost
1574 // For ARCHIVE markers, this adds the symbol for the file & returns
1575 // (Shamus: N.B. it does no such thing ATM)
1576 // [Only used here, once]
1577 if (DoSymbols(otemp))
1581 otemp = otemp->o_next;
1584 // Places all the externs, globals etc into the output symbol table
1585 if (DoCommon() == -1)
1588 // Create a new output file header
1589 header = new_oheader();
1593 printf("MakeOutputObject: out of memory!\n");
1597 // Fill in the output header. Does not match the actual output but values
1598 // used as reference
1599 header->magic = 0x0150; // COF magic number
1600 header->tsize = textsize; // TEXT segment size
1601 header->dsize = datasize; // DATA segment size
1602 header->bsize = bsssize; // BSS segment size
1603 header->ssize = (ost_ptr - ost); // Symbol table size
1604 header->ostbase = ost; // Output symbol table base address
1606 // For each object file, relocate its TEXT and DATA segments. OR the result
1607 // into ret so all files get moved (and errors reported) before returning
1608 // with the error condition
1609 for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
1611 ret |= RelocateSegment(otemp, T_TEXT); // TEXT segment relocations
1612 ret |= RelocateSegment(otemp, T_DATA); // DATA segment relocations
1615 // Done with global symbol hash tables
1618 return (ret ? (struct OHEADER *)NULL : header);
1623 // Add symbol to hash list
1625 int AddSymbolToHashList(struct HREC ** hptr, char * sym, struct OFILE * ofile,
1626 long value, int type)
1628 struct HREC * htemp = new_hrec();
1632 printf("Out of memory\n");
1636 // Shamus: Moar testing...
1639 printf("AddSymbolToHashList(): hptr=$%08X, sym=\"%s\", ofile=$%08X, value=$%X, type=$%X\n", hptr, sym, ofile, value, type);
1642 // Populate hash record
1643 memset(htemp->h_sym, 0, SYMLEN);
1644 strcpy(htemp->h_sym, sym);
1645 htemp->h_ofile = ofile;
1646 htemp->h_value = value;
1647 htemp->h_type = type;
1649 // Add new hash to the front of the list (hence the ** for hptr)
1650 htemp->h_next = *hptr;
1658 // Add symbol to the unresolved symbols hash table (really, it's a linked list)
1660 int AddUnresolvedSymbol(char * sym, struct OFILE * ofile)
1663 printf("AddUnresolvedSymbol(%s, %s)\n", sym, ofile->o_name);
1665 return AddSymbolToHashList(&unresolved, sym, ofile, 0L, 0);
1670 // Remove the HREC from the unresolved symbol list, and pass back a pointer
1671 // to the spot where the HREC was.
1673 struct HREC * RemoveUnresolvedSymbol(struct HREC * hrec)
1675 struct HREC * ptr = unresolved;
1676 struct HREC * previous = NULL;
1678 while ((ptr != hrec) && (ptr != NULL))
1688 struct HREC * next = ptr->h_next;
1690 // Remove the head if nothing previous, otherwise, remove what we found
1691 if (previous == NULL)
1694 previous->h_next = next;
1702 // Add symbol to the unresolved symbols hash table
1704 int AddARSymbol(char * sym, struct OFILE * ofile)
1707 printf("AddARSymbol(%s, %s)\n", sym, ofile->o_name);
1709 return AddSymbolToHashList(&arSymbol, sym, ofile, 0L, 0);
1714 // Generate hash value from the 1st 15 characters of the symbol modulo the
1715 // number of buckets in the hash.
1717 int GetHash(char * s)
1719 // For this to be consistent, the symbol MUST be zeroed out beforehand!
1720 // N.B.: strncpy() pads zeroes for us, if the symbol is less than 15 chars.
1724 int i = (c[0] + c[1] + c[2] + c[3] + c[4] + c[5] + c[6] + c[7] + c[8]
1725 + c[9] + c[10] + c[11] + c[12] + c[13] + c[14]) % NBUCKETS;
1731 // Lookup a symbol in the hash table.
1732 // Returns either a pointer to the HREC or NULL if not found.
1734 struct HREC * LookupHREC(char * symbol)
1736 struct HREC * hptr = htable[GetHash(symbol)];
1738 while (hptr != NULL)
1740 //This is utter failure...
1741 // if (symcmp(symbol, hptr->h_sym)) <-- left here for giggles :D - LinkoVitch
1742 // Return hash record pointer if found
1743 if (strcmp(symbol, hptr->h_sym) == 0)
1746 hptr = hptr->h_next;
1754 // Lookup a symbol in the AR symbol table.
1755 // Returns either a pointer to the HREC or NULL if not found.
1757 struct HREC * LookupARHREC(char * symbol)
1759 struct HREC * hptr = arSymbol;
1761 while (hptr != NULL)
1763 // Return hash record pointer if found
1764 if (strcmp(symbol, hptr->h_sym) == 0)
1767 hptr = hptr->h_next;
1775 // Add the imported symbols from this file to unresolved, and the global and
1776 // common (???) symbols to the exported hash table.
1778 // Change old-style commons (type == T_EXTERN, value != 0) to new-style ones
1779 // (type == (T_GLOBAL | T_EXTERN)). [??? O_o]
1780 // [N.B.: Whoever wrote the above didn't know what the fuck they were talking
1781 // about. Commons (globals) are exactly what they are calling 'old
1782 // style'. Also note, that there is no "T_GLOBAL" or "T_EXTERN" symbols
1783 // defined anywhere in the code.]
1785 int AddSymbols(struct OFILE * Ofile)
1787 struct HREC * hptr; // Hash record pointer
1791 printf("AddSymbols: for file %s\n", Ofile->o_name);
1792 printf(" t_bbase = $%X\n", Ofile->o_tbase);
1793 printf(" d_bbase = $%X\n", Ofile->o_dbase);
1794 printf(" o_bbase = $%X\n", Ofile->o_bbase);
1795 printf(" tsize = $%X\n", Ofile->o_header.tsize);
1796 printf(" dsize = $%X\n", Ofile->o_header.dsize);
1797 printf(" bsize = $%X\n", Ofile->o_header.bsize);
1798 printf(" reloc.tsize = $%X\n", Ofile->o_header.absrel.reloc.tsize);
1799 printf(" reloc.dsize = $%X\n", Ofile->o_header.absrel.reloc.dsize);
1802 // Get base pointer, start of sym fixups
1803 char * ptr = Ofile->o_image + 32
1804 + Ofile->o_header.tsize
1805 + Ofile->o_header.dsize
1806 + Ofile->o_header.absrel.reloc.tsize
1807 + Ofile->o_header.absrel.reloc.dsize;
1808 char * sfix = ptr; // Set symbol fixup pointer
1809 char * sstr = sfix + Ofile->o_header.ssize; // Set symbol table pointer
1810 long nsymbols = Ofile->o_header.ssize / 12; // Obtain number of symbols
1814 long index = GetLong(sfix); // Get symbol string index
1815 long type = GetLong(sfix + 4); // Get symbol type
1816 long value = GetLong(sfix + 8); // Get symbol value
1818 if ((Ofile->isArchiveFile) && !(Ofile->o_flags & O_USED))
1820 if ((type & T_GLBL) && (type & (T_SEG | T_ABS)))
1821 if (AddARSymbol(sstr + index, Ofile))
1824 else if (type == T_GLBL)
1826 // Global symbol that may or may not be in the current unit
1827 hptr = LookupHREC(sstr + index);
1830 hptr->h_ofile->o_flags |= O_USED; // Mark .o file as used
1831 // Otherwise, *maybe* add to unresolved list
1834 // Check to see if this is a common symbol; if so, add it to
1838 // Actually, we need to convert this to a BSS symbol,
1839 // increase the size of the BSS segment for this object, &
1840 // add it to the hash list
1841 uint32_t bssLocation = Ofile->o_header.tsize + Ofile->o_header.dsize + Ofile->o_header.bsize;
1842 Ofile->o_header.bsize += value;
1843 Ofile->segSize[BSS] += value;
1845 value = bssLocation;
1846 PutLong(sfix + 4, type);
1847 PutLong(sfix + 8, value);
1850 printf("AddSymbols: Resetting common label to BSS label\n");
1852 if (AddSymbolToHashList(&htable[GetHash(sstr + index)],
1853 sstr + index, Ofile, value, type))
1854 return 1; // Error if addition failed
1856 // Make sure it's not a built-in external...
1857 else if ((strcmp(sstr + index, "_TEXT_E") != 0)
1858 && (strcmp(sstr + index, "_DATA_E") != 0)
1859 && (strcmp(sstr + index, "_BSS_E") != 0))
1861 if (AddUnresolvedSymbol(sstr + index, Ofile))
1862 return 1; // Error if addition failed
1866 else if ((type & T_GLBL) && (type & (T_SEG | T_ABS)))
1868 hptr = LookupHREC(sstr + index);
1870 // Symbol isn't in the table, so try to add it:
1873 if (AddSymbolToHashList(&htable[GetHash(sstr + index)],
1874 sstr + index, Ofile, value, type))
1879 // Symbol already exists, decide what to do about it
1880 // [N.B.: This isn't a check for a common symbol...
1881 // BEWARE OF BAD INTERPRETATIONS!!]
1882 if (iscommon(hptr->h_type))
1884 // Mismatch: common came first; warn and keep the global
1887 printf("Warning: %s: global from ", sstr + index);
1889 printf(" used, common from ");
1890 WriteARName(hptr->h_ofile);
1891 printf(" discarded.\n");
1894 hptr->h_ofile = Ofile;
1895 hptr->h_type = type;
1896 hptr->h_value = value;
1900 // Global exported by another ofile; warn and make this one
1904 printf("Duplicate symbol %s: ", sstr + index);
1905 WriteARName(hptr->h_ofile);
1908 printf(" discarded\n");
1911 // Set the global in this unit to pure external
1912 // (is this a good idea? what if the other one is a ref to
1914 PutLong(sfix + 4, T_GLBL);
1919 sfix += 12; // Increment symbol fixup pointer
1920 nsymbols--; // Decrement num of symbols to process
1923 // Success loading symbols
1929 // Process object file for symbols
1931 int DoItem(struct OFILE * obj)
1933 // Allocate memory for object record ptr
1934 struct OFILE * Ofile = new_ofile();
1938 printf("Out of memory while processing %s\n", obj->o_name);
1942 // Starting after all pathnames, etc., copy .o file name to Ofile
1943 char * temp = PathTail(obj->o_name);
1945 // Check filename length
1946 if (strlen(temp) > FNLEN - 1)
1948 printf("File name too long: %s\n", temp);
1952 // Check archive name length
1953 if (strlen(obj->o_arname) > (FNLEN - 1))
1955 printf("Archive name too long: %s\n", obj->o_arname);
1959 strcpy(Ofile->o_name, temp); // Store filename
1960 strcpy(Ofile->o_arname, obj->o_arname); // Store archive name
1962 // Initialise object record information
1963 Ofile->o_next = NULL;
1967 Ofile->o_flags = obj->o_flags;
1968 Ofile->o_image = obj->o_image;
1969 Ofile->isArchiveFile = obj->isArchiveFile;
1970 Ofile->segSize[TEXT] = obj->segSize[TEXT];
1971 Ofile->segSize[DATA] = obj->segSize[DATA];
1972 Ofile->segSize[BSS] = obj->segSize[BSS];
1973 char * ptr = obj->o_image;
1975 Ofile->o_header.magic = GetLong(ptr);
1976 Ofile->o_header.tsize = GetLong(ptr + 4);
1977 Ofile->o_header.dsize = GetLong(ptr + 8);
1978 Ofile->o_header.bsize = GetLong(ptr + 12);
1979 Ofile->o_header.ssize = GetLong(ptr + 16);
1980 Ofile->o_header.absrel.reloc.tsize = GetLong(ptr + 24);
1981 Ofile->o_header.absrel.reloc.dsize = GetLong(ptr + 28);
1983 // Round BSS off to alignment boundary (??? isn't this already done ???)
1984 Ofile->o_header.bsize = (Ofile->o_header.bsize + secalign) & ~secalign;
1986 if ((Ofile->o_header.dsize & 7) && wflag)
1988 printf("Warning: data segment size of ");
1990 printf(" is not a phrase multiple\n");
1993 // Check for odd segment sizes
1994 if ((Ofile->o_header.tsize & 1) || (Ofile->o_header.dsize & 1)
1995 || (Ofile->o_header.bsize & 1))
1997 printf("Error: odd-sized segment in ");
1999 printf("; link aborted.\n");
2003 if (AddSymbols(Ofile))
2006 // Add this file to the olist
2010 olast->o_next = Ofile;
2018 // Handle items in processing list.
2020 // After loading all objects, archives & include files, we now go and process
2021 // each item on the processing list (plist). Once this is done, we go through
2022 // any unresolved symbols left and see if they have shown up.
2024 int ProcessLists(void)
2026 // Process object file list first (adds symbols from each unit & creates
2028 while (plist != NULL)
2033 struct OFILE * ptemp = plist;
2034 plist = plist->o_next;
2040 // Process the unresolved symbols list. This may involve pulling in symbols
2041 // from any included .a units. Such units are lazy linked by default; we
2042 // generally don't want everything they provide, just what's referenced.
2043 for(uptr=unresolved; uptr!=NULL; )
2046 printf("LookupHREC(%s) => ", uptr->h_sym);
2048 struct HREC * htemp = LookupHREC(uptr->h_sym);
2052 // Found it in the symbol table!
2054 printf("%s in %s (=$%06X)\n", (isglobal(htemp->h_type) ? "global" : "common"), htemp->h_ofile->o_name, htemp->h_value);
2056 // Mark the .o unit that the symbol is in as seen & remove from the
2058 htemp->h_ofile->o_flags |= O_USED;
2059 uptr = RemoveUnresolvedSymbol(uptr);
2066 // Check to see if the unresolved symbol is on the AR symbol list.
2067 htemp = LookupARHREC(uptr->h_sym);
2069 // If the unresolved symbol is in a .o unit that is unused, we can
2070 // drop it; same if the unresolved symbol is in the exported AR
2071 // symbol list. Otherwise, go to the next unresolved symbol.
2072 if (!(uptr->h_ofile->o_flags & O_USED) || (htemp != NULL))
2073 uptr = RemoveUnresolvedSymbol(uptr);
2075 uptr = uptr->h_next;
2077 // Now that we've possibly deleted the symbol from unresolved list
2078 // that was also in the AR list, we add the symbols from this .o
2079 // unit to the symbol table, mark the .o unit as used, and restart
2080 // scanning the unresolved list as there is a good possibility that
2081 // the symbols in the unit we're adding has unresolved symbols as
2085 htemp->h_ofile->o_flags |= O_USED;
2086 AddSymbols(htemp->h_ofile);
2092 // Show files used if the user requests it.
2095 printf("Files used:\n");
2096 struct OFILE * filePtr = olist;
2098 while (filePtr != NULL)
2100 if (filePtr->o_flags & O_USED)
2102 printf(" %s%s%s\n", filePtr->o_name, (filePtr->isArchiveFile ? ":" : ""), (filePtr->isArchiveFile ? filePtr->o_arname : nullStr));
2105 filePtr = filePtr->o_next;
2114 // Extract filename from path
2116 char * PathTail(char * name)
2118 // Find last occurance of PATH_DELIMETER
2119 char * temp = strrchr(name, PATH_DELIMITER);
2121 // Return what was passed in if path delimiter was not found
2130 // Add input file to processing list
2132 int AddToProcessingList(char * ptr, char * fname, char * arname, uint8_t arFile, uint32_t tSize, uint32_t dSize, uint32_t bSize)
2136 // First time object record allocation
2137 plist = new_ofile();
2142 // Next object record allocation
2143 plast->o_next = new_ofile();
2144 plast = plast->o_next;
2149 printf("Out of memory.\n"); // Error if memory allocation fails
2153 // Discard paths from filenames...
2154 fname = PathTail(fname);
2155 arname = PathTail(arname);
2157 // Check for filename length errors...
2158 if (strlen(fname) > (FNLEN - 1))
2160 printf("File name too long: %s (sorry!)\n", fname);
2164 if (strlen(arname) > (FNLEN - 1))
2166 printf("AR file name too long: %s (sorry!)\n", arname);
2170 strcpy(plast->o_name, fname); // Store filename sans path
2171 strcpy(plast->o_arname, arname); // Store archive name sans path
2172 plast->o_image = ptr; // Store data pointer
2173 plast->o_flags = (arFile ? 0 : O_USED); // File is used if NOT in archive
2174 plast->o_next = NULL; // Initialise next record pointer
2175 plast->isArchiveFile = arFile; // Shamus: Temp until can sort it out
2176 plast->segSize[TEXT] = tSize;
2177 plast->segSize[DATA] = dSize;
2178 plast->segSize[BSS] = bSize;
2180 return 0; // Return without errors
2185 // Process in binary include files and add them to the processing list. This
2186 // routine takes in the binary file and creates an 'object' file in memory.
2187 // Sym1/Sym2 point to the start and end of data.
2189 // Image size for include files is:
2190 // Header ....... 32 bytes
2191 // Data ......... dsize
2192 // Sym fixups ... 2 * 12 bytes
2193 // Symbol size .. 4 bytes (Value to include symbols and terminating null)
2194 // Symbols ...... (strlen(sym1) + 1) + (strlen(sym2) + 1)
2195 // Terminate .... 4 bytes (0x00000000)
2197 int LoadInclude(char * fname, int handle, char * sym1, char * sym2, int segment)
2201 unsigned symtype = 0;
2202 uint32_t tSize = 0, dSize = 0, bSize = 0;
2204 long fsize = FileSize(handle); // Get size of include file
2205 long dsize = (fsize + secalign) & ~secalign; // Align size to boundary
2206 int sym1len = strlen(sym1) + 1; // Get sym1 length + null termination
2207 int sym2len = strlen(sym2) + 1; // Get sym2 length + null termination
2208 long size = 32 + dsize + 24 + 4 + sym1len + sym2len + 4;
2210 // Use calloc so the header & fixups initialize to zero
2211 // Allocate object image memory
2212 if ((ptr = calloc(size, 1)) == NULL)
2214 printf("Out of memory while including %s\n", fname);
2219 // Read in binary data
2220 if (read(handle, ptr + 32, fsize) != fsize)
2222 printf("File read error on %s\n", fname);
2230 // Build this image's dummy header
2231 PutLong(ptr, 0x00000107); // Magic number
2235 PutLong(ptr+4, dsize); // Text size
2236 PutLong(ptr+8, 0L); // Data size
2237 symtype = 0x05000000;
2242 PutLong(ptr+4, 0L); // Text size
2243 PutLong(ptr+8, dsize); // Data size
2244 symtype = 0x07000000;
2248 PutLong(ptr+12, 0L); // BSS size
2249 PutLong(ptr+16, 24); // Symbol table size
2250 PutLong(ptr+20, 0L); // Entry point
2251 PutLong(ptr+24, 0L); // TEXT relocation size
2252 PutLong(ptr+28, 0L); // DATA relocation size
2254 sptr = ptr + 32 + dsize; // Set sptr to symbol table location
2256 PutLong(sptr, 4L); // String offset of symbol1
2257 PutLong(sptr+4, symtype); // Symbol type
2258 PutLong(sptr+8, 0x00000000); // Symbol has no value (START)
2259 PutLong(sptr+12, 4L + (sym2len - 1)); // String offset of symbol2
2260 PutLong(sptr+16, symtype); // Symbol type
2261 PutLong(sptr+20, dsize); // Symbol is data size (END)
2263 sptr = ptr + 32 + dsize + 24; // Set sptr to symbol table size loc
2265 PutLong(sptr, sym1len + 4L); // Size of symbol table
2267 sptr = ptr + 32 + dsize + 24 + 4; // Set sptr to symbol table location
2269 for(i=0; i<(sym1len-1); i++) // Write symbol1 to string table
2272 sptr += (sym1len - 1); // Step past symbol string
2273 *sptr = '\0'; // Terminate symbol string
2274 sptr += 1; // Step past termination
2276 for(i=0; i<(sym2len-1); i++) // Write symbol2 to string table
2279 sptr += (sym2len - 1); // Step past symbol string
2280 *sptr = '\0'; // Terminate symbol string
2281 sptr += 1; // Step past termination
2283 PutLong(sptr, 0L); // Terminating long for object file
2285 return AddToProcessingList(ptr, fname, nullStr, 0, tSize, dSize, bSize);
2290 // Takes a file name, gets in its image, puts it on plist. The image may
2291 // already be in memory: If so, the ptr arg is non-null. If so, the file is
2292 // already closed. Note that the file is already open (from DoFile()). RETURNS
2293 // a pointer to the OFILE structure for this file, so you can diddle its flags
2294 // (DoFile sets O_USED for files on the command line).
2296 int LoadObject(char * fname, int fd, char * ptr)
2298 uint32_t tSize = 0, dSize = 0, bSize = 0;
2302 long size = FileSize(fd);
2304 // Allocate memory for file data
2309 printf("Out of memory while processing %s\n", fname);
2314 // Read in file data
2315 if (read(fd, ptr, size) != size)
2317 printf("File read error on %s\n", fname);
2323 tSize = (GetLong(ptr + 4) + secalign) & ~secalign;
2324 dSize = (GetLong(ptr + 8) + secalign) & ~secalign;
2325 bSize = (GetLong(ptr + 12) + secalign) & ~secalign;
2329 // Now add this image to the list of pending ofiles (plist)
2330 return AddToProcessingList(ptr, fname, nullStr, 0, tSize, dSize, bSize);
2335 // What it says on the tin: check for a .o suffix on the passed in string
2337 uint8_t HasDotOSuffix(char * s)
2339 char * temp = strrchr(s, '.');
2341 if ((temp == NULL) || (strncmp(temp, ".o", 2) != 0))
2349 // Process an ar archive file (*.a)
2351 int LoadArchive(char * fname, int fd)
2353 // Read in the archive file to memory and process
2354 long size = FileSize(fd);
2355 char * ptr = malloc(size);
2356 char * endPtr = ptr + size;
2357 char * longFilenames = NULL;
2361 printf("Out of memory while processing %s\n", fname);
2366 if (read(fd, ptr, size) != size)
2368 printf("File read error on %s\n", fname);
2376 // Save the pointer for later...
2377 arPtr[arIndex++] = ptr;
2378 char objName[FNLEN];
2381 //printf("\nProcessing AR file \"%s\"...\n", fname);
2384 // Loop through all objects in the archive and process them
2387 memset(objName, 0, 17);
2392 // if ((ptr[i] == '/') || (ptr[i] == ' '))
2393 if ((ptr[i] == ' ') && (i != 0))
2399 objName[i] = ptr[i];
2404 if (ptr[48 + i] == ' ')
2410 objSize[i] = ptr[48 + i];
2413 // Check to see if a long filename was requested
2414 if (objName[0] == 0x20)
2416 uint32_t fnSize = atoi(objName + 1);
2418 if (longFilenames != NULL)
2421 char * currentFilename = longFilenames + fnSize;
2423 while (*currentFilename != 0x0A)
2424 objName[i++] = *currentFilename++;
2430 if ((strncmp(objName, "ARFILENAMES/", 12) == 0) || (strncmp(objName, "//", 2) == 0))
2432 longFilenames = ptr + 60;
2434 else if (HasDotOSuffix(objName))
2437 // Strip off any trailing forward slash at end of object name
2438 int lastChar = strlen(objName) - 1;
2440 if (objName[lastChar] == '/')
2441 objName[lastChar] = 0;
2443 //printf("Processing object \"%s\" (size == %i, obj_index == %i)...\n", objName, atoi(objSize), obj_index);
2444 uint32_t tSize = (GetLong(ptr + 60 + 4) + secalign) & ~secalign;
2445 uint32_t dSize = (GetLong(ptr + 60 + 8) + secalign) & ~secalign;
2446 uint32_t bSize = (GetLong(ptr + 60 + 12) + secalign) & ~secalign;
2448 if (AddToProcessingList(ptr + 60, objName, fname, 1, tSize, dSize, bSize))
2452 uint32_t size = atoi(objSize);
2453 size += (size & 0x01 ? 1 : 0);
2456 while (ptr < endPtr);
2463 // Process files (*.o, *.a) passed in on the command line
2465 int ProcessFiles(void)
2468 char magic[8]; // Magic header number (4 bytes for *.o, 8 for *.a)
2470 // Process all file handles
2471 for(i=0; i<(int)hd; i++)
2473 // Verbose mode information
2475 printf("Read file %s%s\n", name[i], (hflag[i] ? " (include)" : ""));
2479 // Attempt to read file magic number (OBJECT/ARCHIVE FILES)
2480 if (read(handle[i], magic, 8) != 8)
2482 printf("Error reading file %s\n", name[i]);
2487 lseek(handle[i], 0L, 0); // Reset to start of input file
2489 // Look for RMAC/MAC/GCC (a.out) object files
2490 if ((GetLong(magic) & 0xFFFF) == 0x0107)
2492 // Process input object file
2493 if (LoadObject(name[i], handle[i], 0L))
2496 // Otherwise, look for an object archive file
2497 else if (strncmp(magic, "!<arch>\x0A", 8) == 0)
2499 if (LoadArchive(name[i], handle[i]))
2504 // Close file and error
2505 printf("%s is not a supported object or archive file\n", name[i]);
2506 printf("Magic == [%02X][%02X][%02X][%02X]\n", magic[0], magic[1], magic[2], magic[3]);
2514 // If hflag[i] is 1, include this in the data segment; if 2, put it
2516 if (LoadInclude(name[i], handle[i], hsym1[i], hsym2[i], hflag[i] - 1))
2521 // Free include, symbol & object handles
2522 for(i=0; i<(int)hd; i++)
2533 // Reset next handle indicator
2540 // Load newargv with pointers to arguments found in the buffer
2542 int parse(char * buf, char * newargv[])
2547 printf("begin parsing\n");
2551 while (*buf && strchr(",\t\n\r\14 ", *buf))
2555 if (*buf == '\0' || *buf == 26)
2559 printf("No commands in command file\n");
2568 /* test for comment */
2571 /* found a comment; skip to next \n and start over */
2572 while (*buf && *buf != '\n')
2580 printf("Too many arguments in command file\n");
2586 while (!strchr(",\t\n\r\14 ", *buf))
2588 if (*buf == '\0' || *buf == 26)
2590 printf("Finished parsing %d args\n", i);
2600 printf("argv[%d] = \"%s\"\n", i, newargv[i]);
2608 // Process in a link command file
2610 int docmdfile(char * fname)
2612 int fd; // File descriptor
2613 unsigned size; // Command file size
2614 char * ptr; // Pointer
2615 int newargc; // New argument count
2616 char * (*newargv)[]; // New argument value array
2618 // Verbose information
2620 printf("docmdfile(%s)\n", fname);
2622 // Allocate memory for new argument values
2623 newargv = malloc((long)(sizeof(char *) * MAXARGS));
2627 printf("Out of memory.\n");
2631 // Attempt to open and read in the command file
2634 if ((fd = open(fname, _OPEN_FLAGS)) < 0)
2636 printf("Cannot open command file %s.\n", fname);
2640 size = FileSize(fd);
2642 if ((ptr = malloc(size + 1)) == NULL)
2644 printf("Out of memory.\n");
2649 if (read(fd, ptr, size) != (int)size)
2651 printf("Read error on command file %s.\n", fname);
2656 *(ptr + size) = 0; // Null terminate the buffer
2661 printf("No command filename specified\n");
2665 // Parse the command file
2666 if ((newargc = parse(ptr, *newargv)) == -1)
2671 // Process the inputted flags
2672 if (doargs(newargc, *newargv))
2674 printf("docmdfile: doargs returns TRUE\n");
2686 // Take an argument list and parse the command line
2688 int doargs(int argc, char * argv[])
2690 int i = 1; // Iterator
2691 int c; // Command line character
2692 char * ifile, * isym; // File name and symbol name for -i
2694 // Parse through option switches & files
2697 // Process command line switches
2698 if (argv[i][0] == '-')
2702 printf("Illegal option argument: %s\n\n", argv[i]);
2707 c = argv[i++][1]; // Get next character in command line
2709 // Process command line switch
2712 case '?': // Display usage information
2719 case 'A': // Set absolute linking on
2725 printf("Not enough arguments to -a\n");
2729 aflag = 1; // Set abs link flag
2731 // Segment order is TEXT, DATA, BSS
2732 // Text segment can be 'r' or a value
2733 if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
2735 ttype = -1; // TEXT segment is relocatable
2737 else if ((*argv[i] == 'x' || *argv[i] == 'X'))
2739 printf("Error in text-segment address: cannot be contiguous\n");
2742 else if (GetHexValue(argv[i], &tval))
2744 printf("Error in text-segment address: %s is not 'r' or an address.", argv[i]);
2750 // Data segment can be 'r', 'x' or a value
2751 if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
2753 dtype = -1; // DATA segment is relocatable
2755 else if ((*argv[i] == 'x' || *argv[i] == 'X'))
2757 dtype = -2; // DATA follows TEXT
2759 else if (GetHexValue(argv[i], &dval))
2761 printf("Error in data-segment address: %s is not 'r', 'x' or an address.", argv[i]);
2767 // BSS segment can be 'r', 'x' or a value
2768 if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
2770 btype = -1; // BSS segment is relocatable
2772 else if ((*argv[i] == 'x' || *argv[i] == 'X'))
2774 btype = -3; // BSS follows DATA
2776 else if (GetHexValue(argv[i], &bval))
2778 printf("Error in bss-segment address: %s is not 'r', 'x[td]', or an address.", argv[i]);
2785 case 'B': // Don't remove muliply defined locals
2792 case 'C': // Process a command file
2795 printf("Not enough arguments to -c\n");
2799 if (docmdfile(argv[i++]))
2806 case 'D': // Wait for "return" before exiting
2814 case 'E': // Output COFF (absolute only)
2818 case 'G': // Output source level debugging
2819 printf("\'g\' flag not currently implemented\n");
2822 if (gflag) warn('g', 1);
2827 case 'I': // Include binary file
2830 printf("Not enough arguments to -i\n");
2837 // handle -ii (No truncation)
2838 if ((argv[i-3][2] == 'i') || (argv[i-3][2] == 'I'))
2841 printf("warning: (-ii) COFF format output not specified\n");
2843 // handle -i (Truncation)
2846 if (strlen(isym) > 8)
2850 // Place include files in the DATA segment only
2851 if (DoFile(ifile, DSTSEG_D, isym))
2856 case 'L': // Add local symbols
2863 case 'M': // Produce load symbol map
2870 case 'N': // Output no header to .abs file
2877 case 'O': // Specify an output file
2885 printf("No output filename following -o switch\n");
2889 if (strlen(argv[i]) > FARGSIZE - 5)
2891 printf("Output file name too long (sorry!)\n");
2895 strcpy(ofile, argv[i++]);
2898 case 'R': // Section alignment size
2904 switch (argv[i-1][2])
2906 case 'w': case 'W': secalign = 1; break; // Word alignment
2907 case 'l': case 'L': secalign = 3; break; // Long alignment
2908 case 'p': case 'P': secalign = 7; break; // Phrase alignment
2909 case 'd': case 'D': secalign = 15; break; // Double phrase alignment
2910 case 'q': case 'Q': secalign = 31; break; // Quad phrase alignment
2911 default: secalign = 7; break; // Default phrase alignment
2916 case 'S': // Output only global symbols
2923 case 'U': // Undefined symbols
2927 case 'V': // Verbose information
2928 if (!vflag && !versflag)
2936 case 'W': // Show warnings flag
2943 case 'Z': // Suppress banner flag
2950 printf("unknown option argument `%c'\n", c);
2956 // Not a switch, then process as a file
2957 if (DoFile(argv[i++], 0, NULL))
2962 if (!oflag && vflag)
2964 strcpy(ofile, "output");
2965 printf("Output file is %s[.ext]\n", ofile);
2969 printf("Output file is %s\n", ofile);
2974 // No problems encountered
2980 // Display version information
2982 void ShowVersion(void)
2984 if (displaybanner)// && vflag)
2992 "\nReboot's Linker for Atari Jaguar\n"
2993 "Copyright (c) 199x Allan K. Pratt, 2014-2015 Reboot\n"
2994 "V%i.%i.%i %s (%s)\n\n", MAJOR, MINOR, PATCH, __DATE__, PLATFORM);
3000 // Display command line help
3005 printf(" %s [-options] file(s)\n", cmdlnexec);
3007 printf("Options:\n");
3008 printf(" -? or -h display usage information\n");
3009 printf(" -a <text> <data> <bss> output absolute file\n");
3010 printf(" hex value: segment address\n");
3011 printf(" r: relocatable segment\n");
3012 printf(" x: contiguous segment\n");
3013 printf(" -b don't remove multiply defined local labels\n");
3014 printf(" -c <fname> add contents of <fname> to command line\n");
3015 printf(" -d wait for key after link\n");
3016 printf(" -e output COF absolute file\n");
3017 printf(" -g output source-level debugging\n");
3018 printf(" -i <fname> <label> incbin <fname> and set <label> (trunc to 8 chars)\n");
3019 printf(" -ii <fname> <label> incbin <fname> and set <label> (no truncation)\n");
3020 printf(" -l add local symbols\n");
3021 printf(" -m produce load symbols map\n");
3022 printf(" -n output no file header to absolute file\n");
3023 printf(" -o <fname> set output name\n");
3024 printf(" -r<size> section alignment size\n");
3025 printf(" w: word (2 bytes)\n");
3026 printf(" l: long (4 bytes)\n");
3027 printf(" p: phrase (8 bytes, default alignment)\n");
3028 printf(" d: double phrase (16 bytes)\n");
3029 printf(" q: quad phrase (32 bytes)\n");
3030 printf(" -s output only global symbols (supresses -l)\n");
3031 printf(" -u allow unresolved symbols (experimental)\n");
3032 printf(" -v set verbose mode\n");
3033 printf(" -w show linker warnings\n");
3034 printf(" -z suppress banner\n");
3042 void ExitLinker(void)
3046 // Display link status if verbose mode
3048 printf("Link %s.\n", errflag ? "aborted" : "complete");
3050 // Wait for return key if requested
3053 printf("\nPress the [RETURN] key to continue. ");
3054 char * c = fgets(tempbuf, 128, stdin);
3061 int main(int argc, char * argv[])
3063 cmdlnexec = argv[0]; // Obtain executable name
3064 char * s = getenv("RLNPATH"); // Attempt to obtain env variable
3067 strcpy(libdir, s); // Store it if found
3069 // Initialize some vars
3070 tval = dval = bval = 0;
3071 ttype = dtype = btype = 0;
3073 // Parse the command line
3074 if (doargs(argc, argv))
3080 if (!zflag && !vflag)
3082 ShowVersion(); // Display version information
3083 versflag = 1; // We've dumped the version banner
3086 // Load in specified files/objects and add to processing list
3093 // Work in items in processing list & deal with unresolved list
3100 // Check that there is something to link
3107 // Report unresolved externals
3108 if (unresolved != NULL)
3110 printf("UNRESOLVED SYMBOLS\n");
3112 // Don't list them if two -u's or more
3115 struct HREC * utemp = unresolved;
3117 while (utemp != NULL)
3119 printf("\t%s (", utemp->h_sym);
3120 WriteARName(utemp->h_ofile);
3122 utemp = utemp->h_next;
3133 // Make one output object from input objects
3134 struct OHEADER * header = MakeOutputObject();
3145 printf("TO DO: Partial linking\n");
3148 // Relocatable linking
3151 printf("TO DO: Relocatable linking\n");
3158 printf("Absolute linking (%s)\n", (cflag ? "COF" : "ABS"));
3161 printf("Header magic is 0x%04X\n", (unsigned int)header->magic);
3163 if (WriteOutputFile(header))
3167 // Display the loaded symbols map
3169 if (ShowSymbolLoadMap(header))
3172 // Display segment size summary
3176 printf("+---------+----------+----------+----------+\n");
3177 printf("| Segment | TEXT | DATA | BSS |\n");
3178 printf("| Sizes |----------+----------+----------|\n");
3179 printf("| (Hex) | %8X | %8X | %8X |\n", (unsigned int)header->tsize, (unsigned int)header->dsize, (unsigned int)header->bsize);
3180 printf("+---------+----------+----------+----------+\n\n");