2 // RLN - Reboot's Linker for the Atari Jaguar Console System
3 // RLN.C - Application Code
4 // Copyright (C) 199x, Allan K. Pratt, 2014 Reboot & Friends
10 unsigned errflag = 0; // Error flag, goes TRUE on error
11 unsigned waitflag = 0; // Wait for any keypress flag
12 unsigned versflag = 0; // Version banner has been shown flag
13 unsigned aflag = 0; // Absolute linking flag
14 unsigned bflag = 0; // Don't remove mulitply def locals flag
15 unsigned cflag = 0; // COF executable
16 unsigned dflag = 0; // Wait for key after link flag
17 unsigned gflag = 0; // Source level debug include flag
18 unsigned lflag = 0; // Add local symbols to output flag
19 unsigned mflag = 0; // Produce symbol load map flag
20 unsigned oflag = 0; // Output filename specified
21 unsigned rflag = 0; // Segment alignment size flag
22 unsigned sflag = 0; // Output only global symbols
23 unsigned vflag = 0; // Verbose flag
24 unsigned wflag = 0; // Show warnings flag
25 unsigned zflag = 0; // Suppress banner flag
26 unsigned pflag = 0, uflag = 0; // Unimplemented flags
27 unsigned hd = 0; // Index of next file handle to fill
28 unsigned secalign = 7; // Section Alignment (8=phrase)
29 unsigned tbase = 0; // TEXT base address
30 unsigned dbase = 0; // DATA base address
31 unsigned bbase = 0; // BSS base address
32 unsigned textoffset = 0; // COF TEXT segment offset
33 unsigned dataoffset = 0; // COF DATA segment offset
34 unsigned bssoffset = 0; // COF BSS segment offset
35 unsigned displaybanner = 1; // Display version banner
36 unsigned symoffset = 0; // Symbol table offset in output file
37 unsigned dosymi = 0; // Dosym() processing iterator
38 unsigned dbgsymbase = 0; // Debug symbol base address
39 //unsigned symtrunc = 0; // Symbol truncation -i and -ii
40 int noheaderflag = 0; // No header flag for ABS files
41 int hflags; // Value of the arg to -h option
42 int ttype, dtype, btype; // Type flag: 0, -1, -2, -3, -4
43 int tval, dval, bval; // Values of these abs bases
44 int hflag[NHANDLES]; // True for include files
45 int handle[NHANDLES]; // Open file handles
46 int textsize, datasize, bsssize; // Cumulative segment sizes
47 char libdir[FARGSIZE * 3]; // Library directory to search
48 char ofile[FARGSIZE]; // Output file name (.o)
49 char * name[NHANDLES]; // Associated file names
50 char * cmdlnexec = NULL; // Executable name - pointer to ARGV[0]
51 char * hsym1[SYMLEN]; // First symbol for include files
52 char * hsym2[SYMLEN]; // Second symbol for include files
53 struct OFILE * plist = NULL; // Object image list pointer
54 struct OFILE * plast; // Last object image list pointer
55 struct OFILE * olist = NULL; // Pointer to first object file in list
56 struct OFILE * olast; // Pointer to last object file in list
57 char obj_fname[16384][FNLEN]; // Object file names
58 unsigned obj_segsize[16384][3]; // Object file seg sizes; TEXT,DATA,BSS
59 unsigned obj_index = 0; // Object file index/count
62 struct HREC * htable[NBUCKETS]; // Hash table
63 struct HREC * unresolved = NULL; // Pointer to unresolved hash list
64 char * ost; // Output symbol table
65 char * ost_ptr; // Output symbol table; current pointer
66 char * ost_end; // Output symbol table; end pointer
67 char * oststr; // Output string table
68 char * oststr_ptr; // Output string table; current pointer
69 char * oststr_end; // Output string table; end pointer
70 int ost_index = 0; // Index of next ost addition
71 uint8_t nullStr[1] = "\x00"; // Empty string
72 struct HREC * arSymbol = NULL; // Pointer to AR symbol table
75 // Function prototypes
76 struct HREC * LookupHREC(char *);
77 char * PathTail(char *);
79 void ShowVersion(void);
83 // Get a long word from memory
85 static inline uint32_t GetLong(uint8_t * src)
87 return (src[0] << 24) | (src[1] << 16) | (src[2] << 8) | src[3];
92 // Put a long word into memory
94 static inline void PutLong(uint8_t * dest, uint32_t val)
96 *dest++ = (uint8_t)(val >> 24);
97 *dest++ = (uint8_t)(val >> 16);
98 *dest++ = (uint8_t)(val >> 8);
104 // Get a word from memory
106 static inline uint16_t GetWord(uint8_t * src)
108 return (src[0] << 8) | src[1];
113 // Put a word into memory
115 static inline void PutWord(uint8_t * dest, uint16_t val)
117 *dest++ = (uint8_t)(val >> 8);
118 *dest = (uint8_t)val;
123 // Find passed in file's length in bytes
124 // N.B.: This also resets the file's pointer to the start of the file
126 long FileSize(int fd)
128 long size = lseek(fd, 0, SEEK_END);
129 lseek(fd, 0, SEEK_SET);
136 // Debugging detritus
138 void DumpOListAndObjSegSizeList(void)
143 printf("Object list order:\n");
145 for(o=olist; o!=NULL; o=o->o_next)
147 printf("\t%s\n", o->o_name);
150 printf("\nobj_segsize[][] list order:\n");
152 for(i=0; i<(int)obj_index; i++)
154 printf("\t%s\n", obj_fname[i]);
162 // For this object file, add symbols to the output symbol table after
163 // relocating them. Returns TRUE if OSTLookup returns an error (-1).
165 int DoSymbols(struct OFILE * ofile)
172 unsigned tsoSave, dsoSave, bsoSave;
174 // DumpOListAndObjSegSizeList();
176 // Point to first symbol record in the object file
177 char * symptr = (ofile->o_image + 32
178 + ofile->o_header.tsize
179 + ofile->o_header.dsize
180 + ofile->o_header.absrel.reloc.tsize
181 + ofile->o_header.absrel.reloc.dsize);
183 // Point to end of symbol record in the object file
184 char * symend = symptr + ofile->o_header.ssize;
186 // Search through object segment size table to accumulated segment sizes to
187 // ensure the correct offsets are used in the resulting COF file.
189 unsigned tsegoffset = 0, dsegoffset = 0, bsegoffset = 0;
191 // Search for object file name
192 for(j=0; j<(int)obj_index; j++)
194 if (!strcmp(ofile->o_name, obj_fname[j]))
196 // Object file name found
201 // Accumulate segment sizes
202 // N.B. We can get rid of this now that there is a spot in the OFILE for these.
203 // Just have to make sure that the order that the linked list is in
204 // corresponds to the order shown here...
205 // I've proved to my satisfaction that the orders are the same...!
206 tsegoffset += obj_segsize[j][0];
207 dsegoffset += obj_segsize[j][1];
208 bsegoffset += obj_segsize[j][2];
213 printf("DoSymbols(): Object file missing from obj_fname: %s\n",
218 // Save segment vars, so we can restore them if needed
219 tsoSave = tsegoffset, dsoSave = dsegoffset, bsoSave = bsegoffset;
221 // Process each record in the object's symbol table
222 for(; symptr!=symend; symptr+=12)
224 index = GetLong(symptr + 0); // Obtain symbol string index
225 type = GetLong(symptr + 4); // Obtain symbol type
226 value = GetLong(symptr + 8); // Obtain symbol value
228 // Global/External symbols have a pre-processing stage
229 // N.B.: This destroys the t/d/bsegoffset discovered above. So if a
230 // local symbol follows a global/exported one, it gets wrong
231 // info! [Should be FIXED now]
232 if (type & 0x01000000)
234 // Obtain the string table index for the relocation symbol, look
235 // for it in the globals hash table to obtain information on that
237 hptr = LookupHREC(symend + index);
241 // Try to find it in the OST
242 int ostIndex = OSTLookup(symend + index);
246 printf("DoSymbols(): Symbol not found in hash table: '%s' (%s)\n", symend + index, ofile->o_name);
251 printf("DoSymbols(): Skipping symbol '%s' (%s) found in OST...\n", symend + index, ofile->o_name);
253 // If the symbol is not in any .a or .o units, it must be one
254 // of the injected ones (_TEXT_E, _DATA_E, or _BSS_E), so skip
255 // it [or maybe not? In verbose mode, we see nothing...!]
259 // Search through object segment size table to obtain segment sizes
260 // for the object that has the required external/global as a local
261 // symbol. As each object is interrogated the segment sizes are
262 // accumulated to ensure the correct offsets are used in the
263 // resulting COF file. This is effectively 'done again' only as we
264 // are working with a different object file.
266 tsegoffset = dsegoffset = bsegoffset = 0;
268 // Search for object filename
269 for(j=0; j<(int)obj_index; j++)
271 if (!strcmp(hptr->h_ofile->o_name, obj_fname[j]))
273 ssidx = j; // Symbol object filename
277 // Accumulate segment sizes
278 tsegoffset += obj_segsize[j][0];
279 dsegoffset += obj_segsize[j][1];
280 bsegoffset += obj_segsize[j][2];
285 printf("DoSymbols(): Object file missing from obj_fname: '%s:%s' symbol: '%s' (%s)\n",
286 hptr->h_ofile->o_name, hptr->h_ofile->o_arname,
287 symend + index, ofile->o_name);
291 // Update type with global type
294 // Remove external flag if absolute
295 if (type == (T_GLBL | T_ABS))
298 // If the global/external has a value then update that value in
299 // accordance with the segment sizes of the object file it
303 switch (hptr->h_type & 0x0E000000)
307 value = hptr->h_value;
310 value = hptr->h_value - hptr->h_ofile->o_header.tsize;
313 value = hptr->h_value
314 - (hptr->h_ofile->o_header.tsize
315 + hptr->h_ofile->o_header.dsize);
319 printf("DoSymbols: No adjustment made for symbol: %s (%s) = %X\n", symend + index, ofile->o_name, hptr->h_value);
323 // If *not* a global/external, use the info from passed in object
325 tsegoffset = tsoSave, dsegoffset = dsoSave, bsegoffset = bsoSave;
327 // Process and update the value dependent on whether the symbol is a
328 // debug symbol or not
329 // N.B.: These are currently not supported
330 if (type & 0xF0000000)
333 // Set the correct debug symbol base address (TEXT segment)
336 for(j=0; (unsigned)j<dosymi; j++)
337 dbgsymbase += obj_segsize[j][0];
339 switch (type & 0xFF000000)
342 value = tval + dbgsymbase;
347 value = tval + dbgsymbase + value;
352 PutLong(symptr + 8, value);
357 // Now make modifications to the symbol value, local or global,
358 // based on the segment sizes of the object file currently being
360 switch (type & T_SEG)
365 value = tbase + tsegoffset + value;
366 PutLong(symptr + 8, value);
370 value = dbase + dsegoffset + value;
372 value = dbase + dsegoffset + (value
373 - ofile->o_header.tsize);
375 PutLong(symptr + 8, value);
379 value = bbase + bsegoffset + value;
381 value = bbase + bsegoffset
382 + (value - (ofile->o_header.tsize
383 + ofile->o_header.dsize));
385 PutLong(symptr + 8, value);
392 // Add to output symbol table if global/extern, or local flag is set
393 if (isglobal(type) || lflag)
396 printf("DoSymbols: Adding symbol: %s (%s) to OST...\n", symend + index, ofile->o_name);
398 index = OSTAdd(symend + index, type, value);
402 printf("DoSymbols(): Failed to add symbol '%s' to OST!\n", symend + index);
408 // Increment dosymi processsing
416 // Free up hash memory
418 void FreeHashes(void)
422 for(i=0; i<NBUCKETS; i++)
424 struct HREC * hptr = htable[i];
428 struct HREC * htemp = hptr->h_next;
437 // Add all global and external symbols to the output symbol table
438 // [This is confusing--is it adding globals or locals? common == local!
439 // but then again, we see this in the header:
440 // #define T_COMMON (T_GLOBAL | T_EXTERN) but that could be just bullshit.]
442 // Common symbols have a different number in the "value" field of the symbol
443 // table (!0) than purely external symbols do (0). So you have to look at the
444 // type (T_GLBL) *and* the value to determine if it's a common symbol.
451 for(i=0; i<NBUCKETS; i++)
453 for(hptr=htable[i]; hptr!=NULL; hptr=hptr->h_next)
455 //NO! if (iscommon(hptr->h_type))
456 if (isglobal(hptr->h_type))// || isextern(hptr->h_type))
458 // Skip if in *.a file... (does nothing)
459 //if (hptr->h_ofile->isArchiveFile)
462 //Is this true? Couldn't an absolute be exported???
463 if (hptr->h_type == (T_GLBL | T_ABS))
464 hptr->h_type = T_ABS; // Absolutes *can't* be externals
466 if (OSTAdd(hptr->h_sym, hptr->h_type, hptr->h_value) == -1)
477 // Add a symbol's name, type, and value to the OST.
478 // Returns the index of the symbol in OST, or -1 for error.
480 int OSTAdd(char * name, int type, long value)
482 int ost_offset_p, ost_offset_e = 0; // OST table offsets for position calcs
483 int ostresult; // OST index result
484 int slen = strlen(name);
486 // If the OST or OST string table has not been initialised then do so
489 ost = malloc(OST_BLOCK);
490 oststr = malloc(OST_BLOCK);
494 printf("OST memory allocation error.\n");
500 printf("OSTSTR memory allocation error.\n");
504 ost_ptr = ost; // Set OST start pointer
505 ost_end = ost + OST_BLOCK; // Set OST end pointer
507 PutLong(oststr, 0x00000004); // Just null long for now
508 oststr_ptr = oststr + 4; // Skip size of str table long (incl null long)
509 PutLong(oststr_ptr, 0x00000000); // Null terminating long
510 oststr_end = oststr + OST_BLOCK;
514 // If next symbol record exceeds current allocation then expand symbol
515 // table and/or symbol string table.
516 ost_offset_p = (ost_ptr - ost);
517 ost_offset_e = (ost_end - ost);
519 // 3 x uint32_t (12 bytes)
520 if ((ost_ptr + 12) > ost_end)
522 // We want to allocate the current size of the OST + another block.
523 ost = realloc(ost, ost_offset_e + OST_BLOCK);
527 printf("OST memory reallocation error.\n");
531 ost_ptr = ost + ost_offset_p;
532 ost_end = (ost + ost_offset_e) + OST_BLOCK;
535 ost_offset_p = (oststr_ptr - oststr);
536 ost_offset_e = (oststr_end - oststr);
538 // string length + terminating NULL + uint32_t (terminal long)
539 if ((oststr_ptr + (slen + 1 + 4)) > oststr_end)
541 oststr = realloc(oststr, ost_offset_e + OST_BLOCK);
545 printf("OSTSTR memory reallocation error.\n");
549 oststr_ptr = oststr + ost_offset_p;
550 oststr_end = (oststr + ost_offset_e) + OST_BLOCK;
554 // If this is a debug symbol and the include debug symbol flag (-g) is not
555 // set then do nothing
556 if ((type & 0xF0000000) && !gflag)
562 // Get symbol index in OST, if any (-1 if not found)
563 ostresult = OSTLookup(name);
565 // If the symbol is in the output symbol table and the bflag is set
566 // (don't remove multiply defined locals) and this is not an
567 // external/global symbol *** OR *** the symbol is not in the output
568 // symbol table then add it.
569 if (((ostresult != -1) && bflag && !(type & 0x01000000))
570 || ((ostresult != -1) && gflag && (type & 0xF0000000))
571 || (ostresult == -1))
573 if ((type & 0xF0000000) == 0x40000000)
574 PutLong(ost_ptr, 0x00000000); // Zero string table offset for dbg line
576 PutLong(ost_ptr, (oststr_ptr - oststr)); // String table offset of symbol string
578 PutLong(ost_ptr + 4, type);
579 PutLong(ost_ptr + 8, value);
582 // If the symbol type is anything but a debug line information
583 // symbol then write the symbol string to the string table
584 if ((type & 0xF0000000) != 0x40000000)
586 strcpy(oststr_ptr, name); // Put symbol name in string table
587 *(oststr_ptr + slen) = '\0'; // Add null terminating character
588 oststr_ptr += (slen + 1);
589 PutLong(oststr_ptr, 0x00000000); // Null terminating long
590 PutLong(oststr, (oststr_ptr - oststr)); // Update size of string table
594 printf("OSTAdd: (%s), type=$%08X, val=$%08lX\n", name, type, value);
596 // is ost_index pointing one past?
597 // does this return the same regardless of if its ++n or n++?
598 // no. it returns the value of ost_index *before* it's incremented.
607 // Return the index of a symbol in the output symbol table
608 // N.B.: This is a 1-based index! (though there's no real reason for it to be)
610 int OSTLookup(char * sym)
613 int stro = 4; // Offset in string table
615 for(i=0; i<ost_index; i++)
617 if (strcmp(oststr + stro, sym) == 0)
620 stro += strlen(oststr + stro) + 1;
628 // Add unresolved externs to the output symbol table
629 // N.B.: Only adds unresolved symbols *if* they're not already in the OST
631 int DoUnresolved(void)
633 struct HREC * hptr = unresolved;
635 // Add to OST while unresolved list is valid
638 if (OSTAdd(hptr->h_sym, T_GLBL, 0L) == -1)
642 printf("DoUnresolved(): '%s' (%s:$%08X) in OST\n", hptr->h_sym, hptr->h_ofile->o_name, hptr->h_type);
644 struct HREC * htemp = hptr->h_next;
655 // Update object file TEXT and DATA segments based on relocation records. Take
656 // in an OFILE header and flag (T_TEXT, T_DATA) to process. Return (0) is
657 // successful or non-zero (1) if failed.
659 int RelocateSegment(struct OFILE * ofile, int flag)
661 char * symtab; // Start of symbol table
662 char * symbols; // Start of symbols
663 char * sptr; // Start of segment data
664 char * rptr; // Start of segment relocation records
665 unsigned symidx; // Offset to symbol
666 unsigned addr; // Relocation address
667 unsigned rflg; // Relocation flags
668 unsigned olddata; // Old segment data at reloc address
669 unsigned newdata = 0; // New segment data at reloc address
670 unsigned pad; // Temporary to calculate phrase padding
672 char sym[SYMLEN]; // String for symbol name/hash search
673 int ssidx; // Segment size table index
674 unsigned glblreloc; // Global relocation flag
675 unsigned absreloc; // Absolute relocation flag
676 unsigned relreloc; // Relative relocation flag
677 unsigned swcond; // Switch statement condition
678 unsigned relocsize; // Relocation record size
680 // If there is no TEXT relocation data for the selected object file segment
681 // then update the COF TEXT segment offset allowing for the phrase padding
682 if ((flag == T_TEXT) && !ofile->o_header.absrel.reloc.tsize)
684 // SCPCD : we should not increment the textoffset before the end of processing the object file, else data section will point to wrong textoffset
688 // If there is no DATA relocation data for the selected object file segment
689 // then update the COF DATA and BSS segment offsets allowing for the phrase
691 if ((flag == T_DATA) && !ofile->o_header.absrel.reloc.dsize)
693 // SCPCD : the T_DATA is the last section of the file, we can now increment the textoffset, dataoffset and bssoffset
695 // TEXT segment size plus padding
696 pad = ((ofile->o_header.tsize + secalign) & ~secalign);
697 textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize));
700 printf("RelocateSegment(%s, TEXT) : No relocation data\n", ofile->o_name);
702 // DATA segment size plus padding
703 pad = ((ofile->o_header.dsize + secalign) & ~secalign);
704 dataoffset += (ofile->o_header.dsize + (pad - ofile->o_header.dsize));
706 // BSS segment size plus padding
707 pad = ((ofile->o_header.bsize + secalign) & ~secalign);
708 bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize));
711 printf("RelocateSegment(%s, DATA) : No relocation data\n", ofile->o_name);
717 printf("RelocateSegment(%s, %s) : Processing Relocation Data\n",
718 ofile->o_name, flag == T_DATA ? "DATA" : "TEXT");
720 // Obtain pointer to start of symbol table
721 symtab = (ofile->o_image + 32 + ofile->o_header.tsize
722 + ofile->o_header.dsize
723 + ofile->o_header.absrel.reloc.tsize
724 + ofile->o_header.absrel.reloc.dsize);
726 // Obtain pointer to start of symbols
727 symbols = symtab + ofile->o_header.ssize;
729 // Obtain pointer to start of TEXT segment
730 sptr = ofile->o_image + 32;
732 // Obtain pointer to start of TEXT relocation records
733 rptr = sptr + (ofile->o_header.tsize + ofile->o_header.dsize);
735 relocsize = ofile->o_header.absrel.reloc.tsize;
738 printf("RELOCSIZE :: %d Records = %d\n", relocsize, relocsize / 8);
740 // Update pointers if DATA relocation records are being processed
743 sptr += ofile->o_header.tsize; // Start of DATA segment
744 rptr += ofile->o_header.absrel.reloc.tsize; // Start of DATA relocation records
745 relocsize = ofile->o_header.absrel.reloc.dsize;
748 // Process each relocation record for the TEXT segment
749 for(i=0; i<(int)relocsize; i+=8)
751 // Obtain both the relocation address and the relocation flags from the
753 addr = GetLong(rptr);
754 rflg = GetLong(rptr + 4);
755 glblreloc = (rflg & 0x00000010 ? 1 : 0);// Set global relocation flag
756 absreloc = (rflg & 0x00000040 ? 1 : 0); // Set absolute relocation flag
757 relreloc = (rflg & 0x000000A0 ? 1 : 0); // Set relative relocation flag
759 // Additional processing required for global relocations
762 // Obtain the string table index for the relocation symbol, look
763 // for it in the globals hash table to obtain information on that
764 // symbol. For the hash calculation to work correctly it must be
765 // placed in a 'clean' string before looking it up.
766 symidx = GetLong(symtab + ((rflg >> 8) * 12));
767 memset(sym, 0, SYMLEN);
768 strcpy(sym, symbols + symidx);
769 olddata = newdata = 0; // Initialise old and new segment data
770 ssidx = OSTLookup(sym);
771 newdata = GetLong(ost + ((ssidx - 1) * 12) + 8);
774 // Obtain the existing long word segment data and flip words if the
775 // relocation flags indicate it relates to a RISC MOVEI instruction
776 olddata = GetLong(sptr + addr);
779 olddata = _SWAPWORD(olddata);
781 // Process record dependant on segment it relates to; TEXT, DATA or
782 // BSS. Construct a new relocated segment long word based on the
783 // required segment base address, the segment data offset in the
784 // resulting COF file and the offsets from the incoming object file.
785 swcond = (rflg & 0xFFFFFF00);
791 case 0x00000200: // Absolute Value
793 case 0x00000400: // TEXT segment relocation record
794 // SCPCD : the symbol point to a text segment, we should use the textoffset
795 newdata = tbase + textoffset + olddata;
798 case 0x00000600: // DATA segment relocation record
799 newdata = dbase + dataoffset
800 + (olddata - ofile->o_header.tsize);
803 case 0x00000800: // BSS segment relocation record
804 newdata = bbase + bssoffset
805 + (olddata - (ofile->o_header.tsize
806 + ofile->o_header.dsize));
817 // Set absolute (long) or relative (word) address of symbol
820 // Flip the new long word segment data if the relocation record
821 // indicated a RISC MOVEI instruction and place the resulting data
822 // back in the COF segment
824 newdata = _SWAPWORD(newdata);
826 PutLong(sptr + addr, newdata);
830 PutWord(sptr + addr, newdata - tbase - addr - ofile->o_tbase);
833 // Shamus: Let's output some info to aid in debugging this crap
840 sprintf(ssiString, " [ssi:%i]", ssidx);
842 printf("RelocateSegment($%08X): %s, $%08X: $%08X => $%08X%s\n", rflg, (glblreloc ? sym : "(LOCAL)"), addr, olddata, GetLong(sptr + addr), ssiString);
845 rptr += 8; // Point to the next relocation record
848 // Update the COF segment offset allowing for the phrase padding.
849 // SCPCD : we should not increment the textoffset before the end of processing the object file, else data section will point to wrong textoffset
852 // TEXT segment plus padding
853 pad = ((ofile->o_header.tsize + secalign) & ~secalign);
854 textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize));
856 // DATA segment plus padding
857 pad = ((ofile->o_header.dsize + secalign) & ~secalign);
858 dataoffset += (ofile->o_header.dsize + (pad - ofile->o_header.dsize));
860 // BSS segment plus padding
861 pad = ((ofile->o_header.bsize + secalign) & ~secalign);
862 bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize));
865 // Return value, should always be zero
871 // Add a path character to the end of string 's' if it doesn't already end with
872 // one. The last occurrance of '/' or '\' in the string is assumed to be the
875 // This is fucking shit. We know what the path delimiter is, its FUCKING
876 // DEFINED IN THE FUCKING HEADER. FOR FUCKS SAKE. AND YES, HOPE TO GOD THERE'S
877 // ENOUGH SPACE IN THE PASSED IN BUFFER TO HOLD THE EXTRA CHARACTER!
879 void AppendPathDelimiter(char * s)
882 // And hope to God that there's enough space in the buffer...
887 if (*s == '/' || *s == '\\')
901 int length = strlen(s);
903 if (s[length - 1] != PATH_DELIMITER)
905 s[length] = PATH_DELIMITER;
906 s[length + 1] = 0; // BUFFER OVERFLOW!!!! FFFFFFFFUUUUUUUUUUUU
913 // Try to open "name", "name.o", "${libdir}name", "${libdir}name.o". Return the
914 // handle of the file successfully opened. p_name is updated to point to a
915 // malloc()'ed string which is the name which actually got opened. p_name will
916 // return unchanged if the file can't be found.
918 int TryOpenFile(char ** p_name)
920 char * name = *p_name;
922 // Note that libdir will be an empty string if there is none specified
923 char * tmpbuf = malloc(strlen(name) + strlen(libdir) + 3);
927 printf("TryOpenFile() : out of memory\n");
931 strcpy(tmpbuf, name);
932 int hasdot = (strrchr(tmpbuf, '.') > strrchr(tmpbuf, PATH_DELIMITER));
933 // Try to open file as passed first
934 int fd = open(tmpbuf, _OPEN_FLAGS);
941 // Try to open file with '.o' added
942 strcat(tmpbuf, ".o");
943 fd = open(tmpbuf, _OPEN_FLAGS);
949 // Try the libdir only if the name isn't already anchored
950 // Shamus: WTH, this makes no sense... Why the ':'? Is this a Macintosh??
951 // if (*name != '/' && *name != '\\' && !strchr(name, ':'))
952 if ((*name != PATH_DELIMITER) && (strchr(name, ':') == NULL))
954 strcpy(tmpbuf, libdir);
955 // Add a trailing path char if there isn't one already
956 AppendPathDelimiter(tmpbuf);
957 strcat(tmpbuf, name);
959 if ((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0)
964 strcat(tmpbuf, ".o");
966 if ((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0)
971 // Couldn't open file at all
974 // There are worse things... :-P
976 tmpbuf = realloc(tmpbuf, strlen(tmpbuf) + 1);
980 printf("TryOpenFile() : out of memory\n");
990 // What it says on the tin
992 void WriteARName(struct OFILE * p)
994 int flag = *(p->o_arname);
995 printf("%s%s%s", (flag ? (char *)(p->o_arname) : ""), (flag ? ":" : ""), p->o_name);
1000 // Collect file names and handles in a buffer so there is less disk activity.
1001 // Call DoFile with flag FALSE for normal object files and archives.
1002 // Call it with flag TRUE and a symbol name for include files (-i).
1004 int DoFile(char * fname, int incFlag, char * sym)
1006 // Verbose information
1009 printf("DoFile() : `%s' %s", fname, incFlag ? "INCLUDE" : "NORMAL");
1012 printf(" symbol %s", sym);
1017 // Reached maximum file handles
1024 // Attempt to open input file
1025 int fd = TryOpenFile(&fname);
1029 printf("Cannot find input module %s\n", fname);
1033 // The file is open; save its info in the handle and name arrays
1035 name[hd] = fname; // This is the name from TryOpenFile()
1036 hflag[hd] = incFlag;
1041 int temp = strlen(sym); // Get symbol length
1043 // 100 chars is max length of a symbol
1050 // Malloc enough space for two symbols, then build the second one.
1051 // Second one may be one character longer than first
1052 if ((hsym1[hd] = malloc((long)temp + 1)) == NULL
1053 || (hsym2[hd] = malloc((long)temp + 2)) == NULL)
1055 printf("DoFile() : out of memory for include-file symbols\n");
1059 strcpy(hsym1[hd], sym);
1060 strcpy(hsym2[hd], sym);
1066 printf("Last char of %s is already 'x': choose another name\n", sym);
1070 hsym2[hd][99] = 'x';
1074 hsym2[hd][temp] = 'x';
1075 hsym2[hd][temp+1] = '\0';
1079 // Increment next handle index
1087 // Pad TEXT or DATA segment to the requested boundary
1089 int PadSegment(FILE * fd, long segsize, int value)
1095 // Determine the number of padding bytes that are needed
1096 long padsize = (segsize + secalign) & ~secalign;
1097 padsize = padsize - segsize;
1099 // Fill pad array if padding is required
1106 PutWord(padptr, value);
1110 symoffset += padsize;
1112 // Write padding bytes
1113 if (fwrite(padarray, padsize, 1, fd) != 1)
1122 // Write the output file
1124 int WriteOutputFile(struct OHEADER * header)
1126 unsigned osize; // Object segment size
1127 struct OFILE * otemp; // Object file pointer
1128 int i, j; // Iterators
1129 char himage[0x168]; // Header image (COF = 0xA8)
1130 unsigned tsoff, dsoff, bsoff; // Segment offset values
1131 unsigned index, type, value; // Symbol table index, type and value
1132 short abstype; // ABS symbol type
1133 char symbol[14]; // Symbol record for ABS files
1134 int slen; // Symbol string length
1136 symoffset = 0; // Initialise symbol offset
1138 // Add correct output extension if none
1139 if (strchr(ofile, '.') == NULL)
1142 strcat(ofile, ".cof"); // COF files
1143 else if (aflag && !cflag)
1144 strcat(ofile, ".abs"); // ABS files
1146 strcat(ofile, ".o"); // Object files (partial linking etc)
1149 FILE * fd = fopen(ofile, "wb"); // Attempt to open output file
1153 printf("Can't open output file %s\n", ofile);
1157 // Build the output file header
1158 // Absolute (COF) header
1161 tsoff = dsoff = bsoff = 0xA8; // Initialises segment offsets
1163 // Process each object file segment size to obtain a cumulative segment
1164 // size for both the TEXT and DATA segments
1165 for(i=0; i<(int)obj_index; i++)
1167 dsoff += obj_segsize[i][0]; // Adding TEXT segment sizes
1168 bsoff += obj_segsize[i][0] + obj_segsize[i][1]; // Adding TEXT and DATA segment sizes
1171 // Currently this only builds a COF absolute file. Conditionals and
1172 // additional code will need to be added for ABS and partial linking.
1174 // Build the COF_HDR
1175 PutWord(himage + 0, 0x0150 ); // Magic Number (0x0150)
1176 PutWord(himage + 2, 0x0003 ); // Sections Number (3)
1177 PutLong(himage + 4, 0x00000000 ); // Date (0L)
1178 PutLong(himage + 8, dsoff + header->dsize); // Offset to Symbols Section
1179 PutLong(himage + 12, ost_index); // Number of Symbols
1180 PutWord(himage + 16, 0x001C ); // Size of RUN_HDR (0x1C)
1181 PutWord(himage + 18, 0x0003 ); // Executable Flags (3)
1183 // Build the RUN_HDR
1184 PutLong(himage + 20, 0x00000107 ); // Magic/vstamp
1185 PutLong(himage + 24, header->tsize ); // TEXT size in bytes
1186 PutLong(himage + 28, header->dsize ); // DATA size in bytes
1187 PutLong(himage + 32, header->bsize ); // BSS size in bytes
1188 PutLong(himage + 36, tbase ); // Start of executable, normally @TEXT
1189 PutLong(himage + 40, tbase ); // @TEXT
1190 PutLong(himage + 44, dbase ); // @DATA
1192 // Build the TEXT SEC_HDR
1193 PutLong(himage + 48, 0x2E746578 );
1194 PutLong(himage + 52, 0x74000000 ); // ".text"
1195 PutLong(himage + 56, tbase ); // TEXT START
1196 PutLong(himage + 60, tbase ); // TEXT START
1197 PutLong(himage + 64, header->tsize ); // TEXT size in bytes
1198 PutLong(himage + 68, tsoff ); // Offset to section data in file
1199 PutLong(himage + 72, 0x00000000 ); // Offset to section reloc in file (0L)
1200 PutLong(himage + 76, 0x00000000 ); // Offset to debug lines structures (0L)
1201 PutLong(himage + 80, 0x00000000 ); // Nreloc/nlnno (0L)
1202 PutLong(himage + 84, 0x00000020 ); // SEC_FLAGS: STYP_TEXT
1204 // Build the DATA SEC_HDR
1205 PutLong(himage + 88, 0x2E646174 );
1206 PutLong(himage + 92, 0x61000000 ); // ".data"
1207 PutLong(himage + 96, dbase ); // DATA START
1208 PutLong(himage + 100, dbase ); // DATA START
1209 PutLong(himage + 104, header->dsize ); // DATA size in bytes
1210 PutLong(himage + 108, dsoff ); // Offset to section data in file
1211 PutLong(himage + 112, 0x00000000 ); // Offset to section reloc in file (0L)
1212 PutLong(himage + 116, 0x00000000 ); // Offset to debugging lines structures (0L)
1213 PutLong(himage + 120, 0x00000000 ); // Nreloc/nlnno (0L)
1214 PutLong(himage + 124, 0x00000040 ); // SEC_FLAGS: STYP_DATA
1216 // Build the BSS SEC_HDR
1217 PutLong(himage + 128, 0x2E627373 );
1218 PutLong(himage + 132, 0x00000000 ); // ".bss"
1219 PutLong(himage + 136, bbase ); // BSS START
1220 PutLong(himage + 140, bbase ); // BSS START
1221 PutLong(himage + 144, header->bsize ); // BSS size in bytes
1222 PutLong(himage + 148, bsoff ); // Offset to section data in file
1223 PutLong(himage + 152, 0x00000000 ); // Offset to section reloc in file (0L)
1224 PutLong(himage + 156, 0x00000000 ); // Offset to debugging lines structures (0L)
1225 PutLong(himage + 160, 0x00000000 ); // Nreloc/nlnno (0L)
1226 PutLong(himage + 164, 0x00000080 ); // SEC_FLAGS: STYP_BSS
1228 symoffset = 168; // Update symbol offset
1230 // Absolute (ABS) header
1233 // Build the ABS header
1234 PutWord(himage + 0, 0x601B ); // Magic Number (0x601B)
1235 PutLong(himage + 2, header->tsize ); // TEXT segment size
1236 PutLong(himage + 6, header->dsize ); // DATA segment size
1237 PutLong(himage + 10, header->bsize ); // BSS segment size
1238 PutLong(himage + 14, ost_index * 14 ); // Symbol table size (?)
1239 PutLong(himage + 18, 0x00000000 ); //
1240 PutLong(himage + 22, tbase ); // TEXT base address
1241 PutWord(himage + 26, 0xFFFF ); // Flags (?)
1242 PutLong(himage + 28, dbase ); // DATA base address
1243 PutLong(himage + 32, bbase ); // BSS base address
1245 symoffset = 36; // Update symbol offset
1248 // Write the header, but not if noheaderflag
1249 // Absolute (ABS) header
1253 if (fwrite(himage, 36, 1, fd) != 1)
1256 // Absolute (COF) header
1259 if (fwrite(himage, 168, 1, fd) != 1)
1263 // Write the TEXT segment of each object file
1264 for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
1266 osize = otemp->o_header.tsize;
1268 // Write only if segment has size
1272 printf("Writing TEXT Segment of %s\n", otemp->o_name);
1274 if (fwrite(otemp->o_image + 32, osize, 1, fd) != 1)
1277 // Pad to required alignment boundary
1278 if (PadSegment(fd, osize, 0x0000))
1285 // Write the DATA segment of each object file
1286 for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
1288 osize = otemp->o_header.dsize;
1290 // Write only if the segment has size
1294 printf("Writing DATA Segment of %s\n", otemp->o_name);
1296 if (fwrite((otemp->o_image + 32 + otemp->o_header.tsize), osize, 1, fd) != 1)
1299 // Pad to required alignment boundary
1300 if (PadSegment(fd, osize, 0))
1309 // Write the symbols table and string table
1310 // Absolute (COF) symbol/string table
1315 if (fwrite(ost, (ost_ptr - ost), 1, fd) != 1)
1318 if (fwrite(oststr, (oststr_ptr - oststr), 1, fd) != 1)
1322 // Absolute (ABS) symbol/string table
1325 // The symbol and string table have been created as part of the
1326 // DoSymbols() function and the output symbol and string tables are
1327 // in COF format. For an ABS file we need to process through this
1328 // to create the 14 character long combined symbol and string
1329 // table. Format of symbol table in ABS: AAAAAAAATTVVVV, where
1330 // (A)=STRING, (T)=TYPE & (V)=VALUE
1332 for(i=0; i<ost_index; i++)
1334 memset(symbol, 0, 14); // Initialise symbol record
1335 abstype = 0; // Initialise ABS symbol type
1336 slen = 0; // Initialise symbol string length
1337 index = GetLong(ost + (i * 12)); // Get symbol index
1338 type = GetLong((ost + (i * 12)) + 4); // Get symbol type
1340 // Skip debug symbols
1341 if (type & 0xF0000000)
1345 value = GetLong((ost + (i * 12)) + 8);
1346 slen = strlen(oststr + index);
1348 // Get symbol string (maximum 8 chars)
1352 *(symbol + j) = *(oststr + index + j);
1356 for(j=0; j<slen; j++)
1357 *(symbol + j) = *(oststr + index + j);
1360 // Modify to ABS symbol type
1363 case 0x02000000: abstype = (short)ABST_DEFINED; break;
1364 case 0x04000000: abstype = (short)ABST_DEFINED | ABST_TEXT; break;
1365 case 0x05000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_TEXT; break;
1366 case 0x06000000: abstype = (short)ABST_DEFINED | ABST_DATA; break;
1367 case 0x07000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_DATA; break;
1368 case 0x08000000: abstype = (short)ABST_DEFINED | ABST_BSS; break;
1369 case 0x09000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_BSS; break;
1371 printf("warning (WriteOutputFile): ABS, cannot determine symbol type ($%08X)\n", type);
1376 PutWord(symbol + 8, abstype); // Write back new ABS type
1377 PutLong(symbol + 10, value); // Write back value
1379 // Write symbol record
1380 if (fwrite(symbol, 14, 1, fd) != 1)
1389 printf("Close error on output file %s\n",ofile);
1396 printf("Write error on output file %s\n", ofile);
1397 fclose(fd); // Try to close output file anyway
1403 // Display the symbol load map
1405 int ShowSymbolLoadMap(struct OHEADER * header)
1407 unsigned i, o; // Inner and outer loop iterators
1408 unsigned c; // Column number
1409 unsigned index; // Symbol string index
1410 unsigned type; // Symbol type
1411 unsigned value; // Symbol value
1412 char * symbol; // Symbol string value
1415 return 0; // Return if no symbols to map
1417 printf("LOAD MAP\n\n");
1419 // Outer loop for each of the symbol areas to map out;
1420 // 0 = NON-RELOCATABLE SYMBOLS
1421 // 1 = TEXT-SEGMENT RELOCATABLE SYMBOLS
1422 // 2 = DATA-SEGMENT RELOCATABLE SYMBOLS
1423 // 3 = BSS-SEGMENT RELOCATABLE SYMBOLS
1426 // Display the correct map header for the symbols being processed
1429 case 0: printf("NON-RELOCATABLE SYMBOLS\n\n"); break;
1430 case 1: printf("TEXT-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
1431 case 2: printf("DATA-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
1432 case 3: printf("BSS-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
1435 c = 0; // Initialise column number
1437 // Inner loop to process each record in the symbol table
1438 for(i=0; i<(unsigned)ost_index; i++)
1440 index = GetLong(ost + (i * 12)); // Get symbol string index
1441 type = GetLong(ost + (i * 12) + 4); // Get symbol type
1442 value = GetLong(ost + (i * 12) + 8); // Get symbol value
1443 symbol = oststr + index; // Get symbol string
1445 // Display only three columns
1452 // If local symbols not included and the type is local then go to
1453 // next symbol record
1454 if (!lflag & !(type & 0x01000000))
1457 // Output each symbol to the display, dependant on type
1461 // Non-relocatable symbols
1462 if (type == 0x02000000 || type == 0x03000000)
1464 printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1470 // TEXT segment relocatable symbols
1471 if (type == 0x04000000 || type == 0x05000000)
1473 printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1479 // DATA segment relocatble symbols
1480 if (type == 0x06000000 || type == 0x07000000)
1482 printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1488 // BSS segment relocatable symbols
1489 if (type == 0x08000000 || type == 0x09000000)
1491 printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1507 // Stuff the (long) value of a string into the value argument. RETURNS TRUE if
1508 // the string doesn't parse. Parses only as a hexadecimal string.
1510 int GetHexValue(char * string, int * value)
1514 while (isxdigit(*string))
1516 if (isdigit(*string))
1518 *value = (*value << 4) + (*string++ - '0');
1522 if (isupper(*string))
1523 *string = tolower(*string);
1525 *value = (*value << 4) + ((*string++ - 'a') + 10);
1529 if (*string != '\0')
1531 printf("Invalid hexadecimal value");
1540 // Create one big .o file from the images already in memory, returning a
1541 // pointer to an OHEADER. Note that the oheader is just the header for the
1542 // output (plus some other information). The text, data, and fixups are all
1543 // still in the ofile images hanging off the global `olist'.
1545 struct OHEADER * MakeOutputFile()
1547 unsigned tptr, dptr, bptr; // Bases in runtime model
1548 int ret = 0; // Return value
1549 struct OHEADER * header; // Output header pointer
1551 // Initialize cumulative segment sizes
1552 textsize = datasize = bsssize = 0;
1554 // For each object file, accumulate the sizes of the segments but remove
1555 // those object files which are unused
1556 struct OFILE * oprev = NULL; // Init previous obj file list ptr
1557 struct OFILE * otemp = olist; // Set temp pointer to object file list
1560 while (otemp != NULL)
1562 // UNUSED !!!!! (it's !O_ARCHIVE, so this code executes.)
1563 if (!(otemp->o_flags & O_ARCHIVE))
1565 if ((otemp->o_flags & O_USED) == 0)
1569 printf("Unused object file ");
1571 printf(" discarded.\n");
1574 // Drop the entry from the linked list
1576 olist = otemp->o_next;
1578 oprev->o_next = otemp->o_next;
1580 // Free the object entry if it's not an archive file
1581 if (!otemp->isArchiveFile)
1582 free(otemp->o_image);
1584 // Also need to remove them from the obj_* tables too :-P
1585 // N.B.: Would probably be worthwhile to remove crap like this
1586 // and stuff it into the OFILE structure...
1588 printf("»-> removing %s... (index == %i, len == %i)\n", obj_fname[i], i, obj_index - 1);
1592 for(k=i; k<obj_index-1; k++)
1594 memcpy(obj_fname[k], obj_fname[k + 1], FNLEN);
1595 obj_segsize[k][0] = obj_segsize[k + 1][0];
1596 obj_segsize[k][1] = obj_segsize[k + 1][1];
1597 obj_segsize[k][2] = obj_segsize[k + 1][2];
1605 // Increment total of segment sizes ensuring requested
1607 textsize += (otemp->o_header.tsize + secalign) & ~secalign;
1608 datasize += (otemp->o_header.dsize + secalign) & ~secalign;
1609 bsssize += (otemp->o_header.bsize + secalign) & ~secalign;
1614 // Go to next object file list pointer
1615 otemp = otemp->o_next;
1619 // Update base addresses and inject the symbols _TEXT_E, _DATA_E and _BSS_E
1625 // DATA follows TEXT
1626 dbase = tval + textsize;
1630 bbase = tval + textsize + datasize;
1632 // BSS is independent of DATA
1637 // DATA is independant of TEXT
1642 bbase = dval + datasize;
1644 // BSS is independent of DATA
1648 OSTAdd("_TEXT_E", 0x05000000, tbase + textsize);
1649 OSTAdd("_DATA_E", 0x07000000, dbase + datasize);
1650 OSTAdd("_BSS_E", 0x09000000, bbase + bsssize);
1652 // Place each unresolved symbol in the output symbol table
1653 // N.B.: It only gets here to do this if user passes in -u flag
1654 // [Only used here, once]
1658 // Initialise base addresses
1659 tptr = dptr = bptr = 0;
1661 // For each file, relocate its symbols and add them to the output symbol
1666 while (otemp != NULL)
1668 otemp->o_tbase = tptr;
1670 // Do rest only for non-ARCHIVE markers
1671 if (!(otemp->o_flags & O_ARCHIVE))
1673 otemp->o_dbase = dptr;
1674 otemp->o_bbase = bptr;
1675 tptr += (otemp->o_header.tsize + secalign) & ~secalign;
1676 dptr += (otemp->o_header.dsize + secalign) & ~secalign;
1677 bptr += (otemp->o_header.bsize + secalign) & ~secalign;
1680 // For each symbol, (conditionally) add it to the ost
1681 // For ARCHIVE markers, this adds the symbol for the file & returns
1682 // (Shamus: N.B. it does no such thing ATM)
1683 // [Only used here, once]
1684 if (DoSymbols(otemp))
1687 if (otemp->o_flags & O_ARCHIVE)
1689 struct OFILE * oNext = otemp->o_next;
1691 // Now that the archive is marked, remove it from list
1693 olist = otemp->o_next;
1695 oprev->o_next = otemp->o_next;
1697 if (otemp->o_image && !otemp->isArchiveFile)
1698 free(otemp->o_image);
1706 otemp = otemp->o_next;
1710 // Places all the externs, globals etc into the output symbol table
1711 if (DoCommon() == -1)
1714 // Create a new output file header
1715 header = new_oheader();
1719 printf("MakeOutputFile: out of memory!\n");
1723 // Fill in the output header. Does not match the actual output but values
1724 // used as reference
1725 header->magic = 0x0150; // COF magic number
1726 header->tsize = textsize; // TEXT segment size
1727 header->dsize = datasize; // DATA segment size
1728 header->bsize = bsssize; // BSS segment size
1729 header->ssize = (ost_ptr - ost); // Symbol table size
1730 header->ostbase = ost; // Output symbol table base address
1732 // For each object file, relocate its TEXT and DATA segments. OR the result
1733 // into ret so all files get moved (and errors reported) before returning
1734 // with the error condition
1735 for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
1737 if (!(otemp->o_flags & O_ARCHIVE))
1739 ret |= RelocateSegment(otemp, T_TEXT); // TEXT segment relocations
1740 ret |= RelocateSegment(otemp, T_DATA); // DATA segment relocations
1744 // Done with global symbol hash tables
1747 return (ret ? (struct OHEADER *)NULL : header);
1752 // Add symbol to hash list
1754 int AddSymbolToHashList(struct HREC ** hptr, char * sym, struct OFILE * ofile,
1755 long value, int type)
1757 struct HREC * htemp = new_hrec();
1761 printf("Out of memory\n");
1765 // Shamus: Moar testing...
1768 printf("AddSymbolToHashList(): hptr=$%08X, sym=\"%s\", ofile=$%08X, value=$%X, type=$%X\n", hptr, sym, ofile, value, type);
1771 // Populate hash record
1772 memset(htemp->h_sym, 0, SYMLEN);
1773 strcpy(htemp->h_sym, sym);
1774 htemp->h_ofile = ofile;
1775 htemp->h_value = value;
1776 htemp->h_type = type;
1778 // Add new hash to the front of the list (hence the ** for hptr)
1779 htemp->h_next = *hptr;
1787 // Add symbol to the unresolved symbols hash table (really, it's a linked list)
1789 int AddUnresolvedSymbol(char * sym, struct OFILE * ofile)
1792 printf("AddUnresolvedSymbol(%s, %s)\n", sym, ofile->o_name);
1794 return AddSymbolToHashList(&unresolved, sym, ofile, 0L, 0);
1799 // Remove the HREC from the unresolved symbol list, and pass back a pointer
1800 // to the spot where the HREC was.
1802 struct HREC * RemoveUnresolvedSymbol(struct HREC * hrec)
1804 struct HREC * ptr = unresolved;
1805 struct HREC * previous = NULL;
1807 while ((ptr != hrec) && (ptr != NULL))
1817 struct HREC * next = ptr->h_next;
1819 // Remove the head if nothing previous, otherwise, remove what we found
1820 if (previous == NULL)
1823 previous->h_next = next;
1831 // Add symbol to the unresolved symbols hash table
1833 int AddARSymbol(char * sym, struct OFILE * ofile)
1836 printf("AddARSymbol(%s, %s)\n", sym, ofile->o_name);
1838 return AddSymbolToHashList(&arSymbol, sym, ofile, 0L, 0);
1843 // Generate hash value from the 1st 15 characters of the symbol modulo the
1844 // number of buckets in the hash.
1846 int GetHash(char * s)
1848 // For this to be consistent, the symbol MUST be zeroed out beforehand!
1849 // N.B.: strncpy() pads zeroes for us, if the symbol is less than 15 chars.
1853 int i = (c[0] + c[1] + c[2] + c[3] + c[4] + c[5] + c[6] + c[7] + c[8]
1854 + c[9] + c[10] + c[11] + c[12] + c[13] + c[14]) % NBUCKETS;
1860 // Lookup a symbol in the hash table.
1861 // Returns either a pointer to the HREC or NULL if not found.
1863 struct HREC * LookupHREC(char * symbol)
1865 struct HREC * hptr = htable[GetHash(symbol)];
1867 while (hptr != NULL)
1869 //This is utter failure...
1870 // if (symcmp(symbol, hptr->h_sym)) <-- left here for giggles :D - LinkoVitch
1871 // Return hash record pointer if found
1872 if (strcmp(symbol, hptr->h_sym) == 0)
1875 hptr = hptr->h_next;
1883 // Lookup a symbol in the AR symbol table.
1884 // Returns either a pointer to the HREC or NULL if not found.
1886 struct HREC * LookupARHREC(char * symbol)
1888 struct HREC * hptr = arSymbol;
1890 while (hptr != NULL)
1892 // Return hash record pointer if found
1893 if (strcmp(symbol, hptr->h_sym) == 0)
1896 hptr = hptr->h_next;
1904 // Find the index in the obj_segsize table for the passed in filename
1906 int GetObjSegSizeIndex(char * name)
1910 for(i=0; i<(int)obj_index; i++)
1912 if (strcmp(name, obj_fname[i]) == 0)
1913 // Object file name was found!
1922 // Add the imported symbols from this file to unresolved, and the global and
1923 // common (???) symbols to the exported hash table.
1925 // Change old-style commons (type == T_EXTERN, value != 0) to new-style ones
1926 // (type == (T_GLOBAL | T_EXTERN)). [??? O_o]
1927 // [N.B.: Whoever wrote the above didn't know what the fuck they were talking
1928 // about. Commons (globals) are exactly what they are calling 'old
1929 // style'. Also note, that there is no "T_GLOBAL" or "T_EXTERN" symbols
1930 // defined anywhere in the code.]
1932 int AddSymbols(struct OFILE * Ofile)
1934 struct HREC * hptr; // Hash record pointer
1938 printf("AddSymbols: for file %s\n", Ofile->o_name);
1939 printf(" t_bbase = $%X\n", Ofile->o_tbase);
1940 printf(" d_bbase = $%X\n", Ofile->o_dbase);
1941 printf(" o_bbase = $%X\n", Ofile->o_bbase);
1942 printf(" tsize = $%X\n", Ofile->o_header.tsize);
1943 printf(" dsize = $%X\n", Ofile->o_header.dsize);
1944 printf(" bsize = $%X\n", Ofile->o_header.bsize);
1945 printf(" reloc.tsize = $%X\n", Ofile->o_header.absrel.reloc.tsize);
1946 printf(" reloc.dsize = $%X\n", Ofile->o_header.absrel.reloc.dsize);
1949 // Get base pointer, start of sym fixups
1950 char * ptr = Ofile->o_image + 32
1951 + Ofile->o_header.tsize
1952 + Ofile->o_header.dsize
1953 + Ofile->o_header.absrel.reloc.tsize
1954 + Ofile->o_header.absrel.reloc.dsize;
1955 char * sfix = ptr; // Set symbol fixup pointer
1956 char * sstr = sfix + Ofile->o_header.ssize; // Set symbol table pointer
1957 long nsymbols = Ofile->o_header.ssize / 12; // Obtain number of symbols
1961 long index = GetLong(sfix); // Get symbol string index
1962 long type = GetLong(sfix + 4); // Get symbol type
1963 long value = GetLong(sfix + 8); // Get symbol value
1965 if ((Ofile->isArchiveFile) && !(Ofile->o_flags & O_USED))
1967 if ((type & T_GLBL) && (type & (T_SEG | T_ABS)))
1968 if (AddARSymbol(sstr + index, Ofile))
1971 else if (type == T_GLBL)
1973 // External symbol that is *not* in the current unit
1974 // N.B.: Also, could be common symbol *in* current unit...!
1975 hptr = LookupHREC(sstr + index);
1978 hptr->h_ofile->o_flags |= O_USED; // Mark .o file as used
1979 // Otherwise, *maybe* add to unresolved list
1982 // Check to see if this is a common symbol; if so, try to add
1983 // it to the hash list...
1986 // Actually, we need to convert this to a BSS symbol,
1987 // increase the size of the BSS segment for this object, &
1988 // add it to the hash list
1989 uint32_t valueSave = value;
1990 uint32_t bssLocation = Ofile->o_header.tsize + Ofile->o_header.dsize + Ofile->o_header.bsize;
1991 Ofile->o_header.bsize += value;
1993 value = bssLocation;
1994 PutLong(sfix + 4, type);
1995 PutLong(sfix + 8, value);
1997 // Also need to reset the size of the object's BSS section:
1998 int i = GetObjSegSizeIndex(Ofile->o_name);
1999 //printf("AddSymbols: obj_segsize[%i][BSS] = %d (value = %d)\n", i, obj_segsize[i][BSS], value);
2000 obj_segsize[i][BSS] += valueSave; // need to realign the section, but only *after* all the common symbols have been added from this unit... !!! FIX !!!
2001 // obj_segsize[obj_index][2] = (GetLong(ptr + 12) + secalign) & ~secalign;
2004 printf("AddSymbols: Resetting common label to BSS label\n");
2006 if (AddSymbolToHashList(&htable[GetHash(sstr + index)],
2007 sstr + index, Ofile, value, type))
2008 return 1; // Error if addition failed
2010 // Check for built-in externals...
2011 else if ((strcmp(sstr + index, "_TEXT_E") != 0)
2012 && (strcmp(sstr + index, "_DATA_E") != 0)
2013 && (strcmp(sstr + index, "_BSS_E") != 0))
2015 if (AddUnresolvedSymbol(sstr + index, Ofile))
2016 return 1; // Error if addition failed
2020 else if ((type & T_GLBL) && (type & (T_SEG | T_ABS)))
2022 hptr = LookupHREC(sstr + index);
2024 // Symbol isn't in the table, so try to add it:
2027 if (AddSymbolToHashList(&htable[GetHash(sstr + index)],
2028 sstr + index, Ofile, value, type))
2033 // Symbol already exists, decide what to do about it
2034 // [N.B.: This isn't a check for a common symbol...
2035 // BEWARE OF BAD INTERPRETATIONS!!]
2036 if (iscommon(hptr->h_type))
2038 // Mismatch: common came first; warn and keep the global
2041 printf("Warning: %s: global from ", sstr + index);
2043 printf(" used, common from ");
2044 WriteARName(hptr->h_ofile);
2045 printf(" discarded.\n");
2048 hptr->h_ofile = Ofile;
2049 hptr->h_type = type;
2050 hptr->h_value = value;
2054 // Global exported by another ofile; warn and make this one
2058 printf("Duplicate symbol %s: ", sstr + index);
2059 WriteARName(hptr->h_ofile);
2062 printf(" discarded\n");
2065 // Set the global in this unit to pure external
2066 // (is this a good idea? what if the other one is a ref to
2068 PutLong(sfix + 4, T_GLBL);
2073 sfix += 12; // Increment symbol fixup pointer
2074 nsymbols--; // Decrement num of symbols to process
2077 // Success loading symbols
2083 // Process object file for symbols
2085 int DoItem(struct OFILE * obj)
2087 // Allocate memory for object record ptr
2088 struct OFILE * Ofile = new_ofile();
2092 printf("Out of memory while processing %s\n", obj->o_name);
2096 // Starting after all pathnames, etc., copy .o file name to Ofile
2097 char * temp = PathTail(obj->o_name);
2099 // Check filename length
2100 if (strlen(temp) > FNLEN - 1)
2102 printf("File name too long: %s\n", temp);
2106 // Check archive name length
2107 if (strlen(obj->o_arname) > FNLEN - 1)
2109 printf("Archive name too long: %s\n", obj->o_arname);
2113 strcpy(Ofile->o_name, temp); // Store filename
2114 strcpy(Ofile->o_arname, obj->o_arname); // Store archive name
2116 // Initialise object record information
2117 Ofile->o_next = NULL;
2121 Ofile->o_flags = obj->o_flags;
2122 Ofile->o_image = obj->o_image;
2123 Ofile->isArchiveFile = obj->isArchiveFile;
2124 char * ptr = obj->o_image;
2126 // Don't do anything if this is just an ARCHIVE marker, just add the file
2128 // (Shamus: N.B.: it does no such ARCHIVE thing ATM)
2129 if (!(obj->o_flags & O_ARCHIVE))
2131 Ofile->o_header.magic = GetLong(ptr);
2132 Ofile->o_header.tsize = GetLong(ptr + 4);
2133 Ofile->o_header.dsize = GetLong(ptr + 8);
2134 Ofile->o_header.bsize = GetLong(ptr + 12);
2135 Ofile->o_header.ssize = GetLong(ptr + 16);
2136 Ofile->o_header.absrel.reloc.tsize = GetLong(ptr + 24);
2137 Ofile->o_header.absrel.reloc.dsize = GetLong(ptr + 28);
2139 // Round BSS off to alignment boundary
2140 Ofile->o_header.bsize = (Ofile->o_header.bsize + secalign) & ~secalign;
2142 if ((Ofile->o_header.dsize & 7) && wflag)
2144 printf("Warning: data segment size of ");
2146 printf(" is not a phrase multiple\n");
2149 // Check for odd segment sizes
2150 if ((Ofile->o_header.tsize & 1) || (Ofile->o_header.dsize & 1)
2151 || (Ofile->o_header.bsize & 1))
2153 printf("Error: odd-sized segment in ");
2155 printf("; link aborted.\n");
2159 if (AddSymbols(Ofile))
2163 // Add this file to the olist
2167 olast->o_next = Ofile;
2175 // Handle items in processing list.
2177 // After loading all objects, archives & include files, we now go and process
2178 // each item on the processing list (plist). Once this is done, we go through
2179 // any unresolved symbols left and see if they have shown up.
2181 int ProcessLists(void)
2183 // Process object file list first (adds symbols from each unit & creates
2185 while (plist != NULL)
2190 struct OFILE * ptemp = plist;
2191 plist = plist->o_next;
2197 // Process the unresolved symbols list. This may involve pulling in symbols
2198 // from any included .a units. Such units are lazy linked by default; we
2199 // generally don't want everything they provide, just what's referenced.
2200 for(uptr=unresolved; uptr!=NULL; )
2203 printf("LookupHREC(%s) => ", uptr->h_sym);
2205 struct HREC * htemp = LookupHREC(uptr->h_sym);
2209 // Found it in the symbol table!
2211 printf("%s in %s (=$%06X)\n", (isglobal(htemp->h_type) ? "global" : "common"), htemp->h_ofile->o_name, htemp->h_value);
2213 // Mark the .o unit that the symbol is in as seen & remove from the
2215 htemp->h_ofile->o_flags |= O_USED;
2216 uptr = RemoveUnresolvedSymbol(uptr);
2223 // Check to see if the unresolved symbol is on the AR symbol list.
2224 htemp = LookupARHREC(uptr->h_sym);
2226 // If the unresolved symbol is in a .o unit that is unused, we can
2227 // drop it; same if the unresolved symbol is in the exported AR
2228 // symbol list. Otherwise, go to the next unresolved symbol.
2229 if (!(uptr->h_ofile->o_flags & O_USED) || (htemp != NULL))
2230 uptr = RemoveUnresolvedSymbol(uptr);
2232 uptr = uptr->h_next;
2234 // Now that we've possibly deleted the symbol from unresolved list
2235 // that was also in the AR list, we add the symbols from this .o
2236 // unit to the symbol table, mark the .o unit as used, and restart
2237 // scanning the unresolved list as there is a good possibility that
2238 // the symbols in the unit we're adding has unresolved symbols as
2242 htemp->h_ofile->o_flags |= O_USED;
2243 AddSymbols(htemp->h_ofile);
2249 // Show files used if the user requests it.
2252 printf("Files used:\n");
2253 struct OFILE * filePtr = olist;
2255 while (filePtr != NULL)
2257 if (filePtr->o_flags & O_USED)
2259 printf(" %s%s%s\n", filePtr->o_name, (filePtr->isArchiveFile ? ":" : ""), (filePtr->isArchiveFile ? filePtr->o_arname : nullStr));
2262 filePtr = filePtr->o_next;
2271 // Extract filename from path
2273 char * PathTail(char * name)
2275 // Find last occurance of PATH_DELIMETER
2276 char * temp = strrchr(name, PATH_DELIMITER);
2278 // Return what was passed in if path delimiter was not found
2287 // Add input file to processing list
2289 int AddToProcessingList(char * ptr, char * fname, char * arname, uint8_t arFile, uint32_t tSize, uint32_t dSize, uint32_t bSize)
2293 // First time object record allocation
2294 plist = new_ofile();
2299 // Next object record allocation
2300 plast->o_next = new_ofile();
2301 plast = plast->o_next;
2306 printf("Out of memory.\n"); // Error if memory allocation fails
2310 // Discard paths from filenames...
2311 fname = PathTail(fname);
2312 arname = PathTail(arname);
2314 // Check for filename length errors...
2315 if (strlen(fname) > (FNLEN - 1))
2317 printf("File name too long: %s (sorry!)\n", fname);
2321 if (strlen(arname) > (FNLEN - 1))
2323 printf("AR file name too long: %s (sorry!)\n", arname);
2327 strcpy(plast->o_name, fname); // Store filename sans path
2328 strcpy(plast->o_arname, arname); // Store archive name sans path
2329 plast->o_image = ptr; // Store data pointer
2330 plast->o_flags = (arFile ? 0 : O_USED); // File is used if NOT in archive
2331 plast->o_next = NULL; // Initialise next record pointer
2332 plast->isArchiveFile = arFile; // Shamus: Temp until can sort it out
2333 plast->segSize[TEXT] = tSize;
2334 plast->segSize[DATA] = dSize;
2335 plast->segSize[BSS] = bSize;
2337 return 0; // Return without errors
2342 // Process in binary include files and add them to the processing list. This
2343 // routine takes in the binary file and creates an 'object' file in memory.
2344 // Sym1/Sym2 point to the start and end of data.
2346 // Image size for include files is:
2347 // Header ....... 32 bytes
2348 // Data ......... dsize
2349 // Sym Fixups ... 2 * 12 bytes
2350 // Symbol Size .. 4 bytes (Value to include symbols and terminating null)
2351 // Symbols ...... (strlen(sym1) + 1) + (strlen(sym2) + 1)
2352 // Terminate .... 4 bytes (0x00000000)
2354 int LoadInclude(char * fname, int handle, char * sym1, char * sym2, int segment)
2358 unsigned symtype = 0;
2360 long fsize = FileSize(handle); // Get size of include file
2361 long dsize = (fsize + secalign) & ~secalign; // Align size to boundary
2362 int sym1len = strlen(sym1) + 1; // Get sym1 length + null termination
2363 int sym2len = strlen(sym2) + 1; // Get sym2 length + null termination
2364 long size = 32 + dsize + 24 + 4 + sym1len + sym2len + 4;
2366 // Use calloc so the header & fixups initialize to zero
2367 // Allocate object image memory
2368 if ((ptr = calloc(size, 1)) == NULL)
2370 printf("Out of memory while including %s\n", fname);
2375 // Read in binary data
2376 if (read(handle, ptr + 32, fsize) != fsize)
2378 printf("File read error on %s\n", fname);
2386 strcpy(obj_fname[obj_index], PathTail(fname));
2388 // Build this image's dummy header
2389 PutLong(ptr, 0x00000107); // Magic number
2393 PutLong(ptr+4, dsize); // Text size
2394 PutLong(ptr+8, 0L); // Data size
2395 symtype = 0x05000000;
2396 obj_segsize[obj_index][0] = dsize;
2397 obj_segsize[obj_index][1] = 0;
2398 obj_segsize[obj_index][2] = 0;
2402 PutLong(ptr+4, 0L); // Text size
2403 PutLong(ptr+8, dsize); // Data size
2404 symtype = 0x07000000;
2405 obj_segsize[obj_index][0] = 0;
2406 obj_segsize[obj_index][1] = dsize;
2407 obj_segsize[obj_index][2] = 0;
2410 obj_index++; // Increment object count
2412 PutLong(ptr+12, 0L); // BSS size
2413 PutLong(ptr+16, 24); // Symbol table size
2414 PutLong(ptr+20, 0L); // Entry point
2415 PutLong(ptr+24, 0L); // TEXT relocation size
2416 PutLong(ptr+28, 0L); // DATA relocation size
2418 sptr = ptr + 32 + dsize; // Set sptr to symbol table location
2420 PutLong(sptr, 4L); // String offset of symbol1
2421 PutLong(sptr+4, symtype); // Symbol type
2422 PutLong(sptr+8, 0x00000000); // Symbol has no value (START)
2423 PutLong(sptr+12, 4L + (sym2len - 1)); // String offset of symbol2
2424 PutLong(sptr+16, symtype); // Symbol type
2425 PutLong(sptr+20, dsize); // Symbol is data size (END)
2427 sptr = ptr + 32 + dsize + 24; // Set sptr to symbol table size loc
2429 PutLong(sptr, sym1len + 4L); // Size of symbol table
2431 sptr = ptr + 32 + dsize + 24 + 4; // Set sptr to symbol table location
2433 for(i=0; i<(sym1len-1); i++) // Write symbol1 to string table
2436 sptr += (sym1len - 1); // Step past symbol string
2437 *sptr = '\0'; // Terminate symbol string
2438 sptr += 1; // Step past termination
2440 for(i=0; i<(sym2len-1); i++) // Write symbol2 to string table
2443 sptr += (sym2len - 1); // Step past symbol string
2444 *sptr = '\0'; // Terminate symbol string
2445 sptr += 1; // Step past termination
2447 PutLong(sptr, 0L); // Terminating long for object file
2449 return AddToProcessingList(ptr, fname, nullStr, 0, obj_segsize[obj_index - 1][0], obj_segsize[obj_index - 1][1], obj_segsize[obj_index - 1][2]);
2454 // Takes a file name, gets in its image, puts it on plist. The image may
2455 // already be in memory: If so, the ptr arg is non-null. If so, the file is
2456 // already closed. Note that the file is already open (from DoFile()). RETURNS
2457 // a pointer to the OFILE structure for this file, so you can diddle its flags
2458 // (DoFile sets O_USED for files on the command line).
2460 int LoadObject(char * fname, int fd, char * ptr)
2464 long size = FileSize(fd);
2466 // Allocate memory for file data
2471 printf("Out of memory while processing %s\n", fname);
2476 // Read in file data
2477 if (read(fd, ptr, size) != size)
2479 printf("File read error on %s\n", fname);
2485 // SCPCD: get the name of the file instead of all pathname
2486 strcpy(obj_fname[obj_index], PathTail(fname));
2487 obj_segsize[obj_index][0] = (GetLong(ptr + 4) + secalign) & ~secalign;
2488 obj_segsize[obj_index][1] = (GetLong(ptr + 8) + secalign) & ~secalign;
2489 obj_segsize[obj_index][2] = (GetLong(ptr + 12) + secalign) & ~secalign;
2492 close(fd); // Close file
2495 // Now add this image to the list of pending ofiles (plist)
2496 // This routine is shared by LoadInclude after it builds the image
2497 return AddToProcessingList(ptr, fname, nullStr, 0, obj_segsize[obj_index - 1][0], obj_segsize[obj_index - 1][1], obj_segsize[obj_index - 1][2]);
2502 // What it says on the tin: check for a .o suffix on the passed in string
2504 uint8_t HasDotOSuffix(char * s)
2506 char * temp = strrchr(s, '.');
2508 if ((temp == NULL) || (strncmp(temp, ".o", 2) != 0))
2516 // Process an ar archive file (*.a)
2518 int LoadArchive(char * fname, int fd)
2520 // Read in the archive file to memory and process
2521 long size = FileSize(fd);
2522 char * ptr = malloc(size);
2523 char * endPtr = ptr + size;
2524 char * longFilenames = NULL;
2528 printf("Out of memory while processing %s\n", fname);
2533 if (read(fd, ptr, size) != size)
2535 printf("File read error on %s\n", fname);
2543 // Save the pointer for later...
2544 arPtr[arIndex++] = ptr;
2545 char objName[FNLEN];
2548 //printf("\nProcessing AR file \"%s\"...\n", fname);
2551 // Loop through all objects in the archive and process them
2554 memset(objName, 0, 17);
2559 // if ((ptr[i] == '/') || (ptr[i] == ' '))
2560 if ((ptr[i] == ' ') && (i != 0))
2566 objName[i] = ptr[i];
2571 if (ptr[48 + i] == ' ')
2577 objSize[i] = ptr[48 + i];
2580 // Check to see if a long filename was requested
2581 if (objName[0] == 0x20)
2583 uint32_t fnSize = atoi(objName + 1);
2585 if (longFilenames != NULL)
2588 char * currentFilename = longFilenames + fnSize;
2590 while (*currentFilename != 0x0A)
2591 objName[i++] = *currentFilename++;
2597 if ((strncmp(objName, "ARFILENAMES/", 12) == 0) || (strncmp(objName, "//", 2) == 0))
2599 longFilenames = ptr + 60;
2601 else if (HasDotOSuffix(objName))
2604 // Strip off any trailing forward slash at end of object name
2605 int lastChar = strlen(objName) - 1;
2607 if (objName[lastChar] == '/')
2608 objName[lastChar] = 0;
2610 //printf("Processing object \"%s\" (size == %i, obj_index == %i)...\n", objName, atoi(objSize), obj_index);
2611 strcpy(obj_fname[obj_index], objName);
2612 obj_segsize[obj_index][0] = (GetLong(ptr + 60 + 4) + secalign) & ~secalign;
2613 obj_segsize[obj_index][1] = (GetLong(ptr + 60 + 8) + secalign) & ~secalign;
2614 obj_segsize[obj_index][2] = (GetLong(ptr + 60 + 12) + secalign) & ~secalign;
2617 if (AddToProcessingList(ptr + 60, objName, fname, 1, obj_segsize[obj_index - 1][0], obj_segsize[obj_index - 1][1], obj_segsize[obj_index - 1][2]))
2621 uint32_t size = atoi(objSize);
2622 size += (size & 0x01 ? 1 : 0);
2625 while (ptr < endPtr);
2632 // Process files (*.o, *.a) passed in on the command line
2634 int ProcessFiles(void)
2637 char magic[8]; // Magic header number (4 bytes for *.o, 8 for *.a)
2639 // Process all file handles
2640 for(i=0; i<(int)hd; i++)
2642 // Verbose mode information
2644 printf("Read file %s%s\n", name[i], (hflag[i] ? " (include)" : ""));
2648 // Attempt to read file magic number (OBJECT/ARCHIVE FILES)
2649 if (read(handle[i], magic, 8) != 8)
2651 printf("Error reading file %s\n", name[i]);
2656 lseek(handle[i], 0L, 0); // Reset to start of input file
2658 // Look for RMAC/MAC/GCC (a.out) object files
2659 if ((GetLong(magic) & 0xFFFF) == 0x0107)
2661 // Process input object file
2662 if (LoadObject(name[i], handle[i], 0L))
2665 // Otherwise, look for an object archive file
2666 else if (strncmp(magic, "!<arch>\x0A", 8) == 0)
2668 if (LoadArchive(name[i], handle[i]))
2673 // Close file and error
2674 printf("%s is not a supported object or archive file\n", name[i]);
2675 printf("Magic == [%02X][%02X][%02X][%02X]\n", magic[0], magic[1], magic[2], magic[3]);
2683 // If hflag[i] is 1, include this in the data segment; if 2, put it
2685 if (LoadInclude(name[i], handle[i], hsym1[i], hsym2[i], hflag[i] - 1))
2690 // Free include, symbol & object handles
2691 for(i=0; i<(int)hd; i++)
2702 // Reset next handle indicator
2709 // Load newargv with pointers to arguments found in the buffer
2711 int parse(char * buf, char * newargv[])
2716 printf("begin parsing\n");
2720 while (*buf && strchr(",\t\n\r\14 ", *buf))
2724 if (*buf == '\0' || *buf == 26)
2728 printf("No commands in command file\n");
2737 /* test for comment */
2740 /* found a comment; skip to next \n and start over */
2741 while (*buf && *buf != '\n')
2749 printf("Too many arguments in command file\n");
2755 while (!strchr(",\t\n\r\14 ", *buf))
2757 if (*buf == '\0' || *buf == 26)
2759 printf("Finished parsing %d args\n", i);
2769 printf("argv[%d] = \"%s\"\n", i, newargv[i]);
2777 // Process in a link command file
2779 int docmdfile(char * fname)
2781 int fd; // File descriptor
2782 unsigned size; // Command file size
2783 char * ptr; // Pointer
2784 int newargc; // New argument count
2785 char * (*newargv)[]; // New argument value array
2787 // Verbose information
2789 printf("docmdfile(%s)\n", fname);
2791 // Allocate memory for new argument values
2792 newargv = malloc((long)(sizeof(char *) * MAXARGS));
2796 printf("Out of memory.\n");
2800 // Attempt to open and read in the command file
2803 if ((fd = open(fname, _OPEN_FLAGS)) < 0)
2805 printf("Cannot open command file %s.\n", fname);
2809 size = FileSize(fd);
2811 if ((ptr = malloc(size + 1)) == NULL)
2813 printf("Out of memory.\n");
2818 if (read(fd, ptr, size) != (int)size)
2820 printf("Read error on command file %s.\n", fname);
2825 *(ptr + size) = 0; // Null terminate the buffer
2830 printf("No command filename specified\n");
2834 // Parse the command file
2835 if ((newargc = parse(ptr, *newargv)) == -1)
2840 // Process the inputted flags
2841 if (doargs(newargc, *newargv))
2843 printf("docmdfile: doargs returns TRUE\n");
2855 // Take an argument list and parse the command line
2857 int doargs(int argc, char * argv[])
2859 int i = 1; // Iterator
2860 int c; // Command line character
2861 char * ifile, * isym; // File name and symbol name for -i
2863 // Parse through option switches & files
2866 // Process command line switches
2867 if (argv[i][0] == '-')
2871 printf("Illegal option argument: %s\n\n", argv[i]);
2876 c = argv[i++][1]; // Get next character in command line
2878 // Process command line switch
2881 case '?': // Display usage information
2888 case 'A': // Set absolute linking on
2894 printf("Not enough arguments to -a\n");
2898 aflag = 1; // Set abs link flag
2900 // Segment order is TEXT, DATA, BSS
2901 // Text segment can be 'r' or a value
2902 if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
2904 ttype = -1; // TEXT segment is relocatable
2906 else if ((*argv[i] == 'x' || *argv[i] == 'X'))
2908 printf("Error in text-segment address: cannot be contiguous\n");
2911 else if (GetHexValue(argv[i], &tval))
2913 printf("Error in text-segment address: %s is not 'r' or an address.", argv[i]);
2919 // Data segment can be 'r', 'x' or a value
2920 if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
2922 dtype = -1; // DATA segment is relocatable
2924 else if ((*argv[i] == 'x' || *argv[i] == 'X'))
2926 dtype = -2; // DATA follows TEXT
2928 else if (GetHexValue(argv[i], &dval))
2930 printf("Error in data-segment address: %s is not 'r', 'x' or an address.", argv[i]);
2936 // BSS segment can be 'r', 'x' or a value
2937 if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
2939 btype = -1; // BSS segment is relocatable
2941 else if ((*argv[i] == 'x' || *argv[i] == 'X'))
2943 btype = -3; // BSS follows DATA
2945 else if (GetHexValue(argv[i], &bval))
2947 printf("Error in bss-segment address: %s is not 'r', 'x[td]', or an address.", argv[i]);
2954 case 'B': // Don't remove muliply defined locals
2961 case 'C': // Process a command file
2964 printf("Not enough arguments to -c\n");
2968 if (docmdfile(argv[i++]))
2975 case 'D': // Wait for "return" before exiting
2983 case 'E': // Output COFF (absolute only)
2987 case 'G': // Output source level debugging
2988 printf("\'g\' flag not currently implemented\n");
2991 if (gflag) warn('g', 1);
2996 case 'I': // Include binary file
2999 printf("Not enough arguments to -i\n");
3006 // handle -ii (No truncation)
3007 if ((argv[i-3][2] == 'i') || (argv[i-3][2] == 'I'))
3010 printf("warning: (-ii) COFF format output not specified\n");
3012 // handle -i (Truncation)
3015 if (strlen(isym) > 8)
3019 // Place include files in the DATA segment only
3020 if (DoFile(ifile, DSTSEG_D, isym))
3025 case 'L': // Add local symbols
3032 case 'M': // Produce load symbol map
3039 case 'N': // Output no header to .abs file
3046 case 'O': // Specify an output file
3054 printf("No output filename following -o switch\n");
3058 if (strlen(argv[i]) > FARGSIZE - 5)
3060 printf("Output file name too long (sorry!)\n");
3064 strcpy(ofile, argv[i++]);
3067 case 'R': // Section alignment size
3073 switch (argv[i-1][2])
3075 case 'w': case 'W': secalign = 1; break; // Word alignment
3076 case 'l': case 'L': secalign = 3; break; // Long alignment
3077 case 'p': case 'P': secalign = 7; break; // Phrase alignment
3078 case 'd': case 'D': secalign = 15; break; // Double phrase alignment
3079 case 'q': case 'Q': secalign = 31; break; // Quad phrase alignment
3080 default: secalign = 7; break; // Default phrase alignment
3085 case 'S': // Output only global symbols
3092 case 'U': // Undefined symbols
3096 case 'V': // Verbose information
3097 if (!vflag && !versflag)
3105 case 'W': // Show warnings flag
3112 case 'Z': // Suppress banner flag
3119 printf("unknown option argument `%c'\n", c);
3125 // Not a switch, then process as a file
3126 if (DoFile(argv[i++], 0, NULL))
3131 if (!oflag && vflag)
3133 strcpy(ofile, "output");
3134 printf("Output file is %s[.ext]\n", ofile);
3138 printf("Output file is %s\n", ofile);
3143 // No problems encountered
3149 // Display version information
3151 void ShowVersion(void)
3153 if (displaybanner)// && vflag)
3161 "\nReboot's Linker for Atari Jaguar\n"
3162 "Copyright (c) 199x Allan K. Pratt, 2014-2015 Reboot\n"
3163 "V%i.%i.%i %s (%s)\n\n", MAJOR, MINOR, PATCH, __DATE__, PLATFORM);
3169 // Display command line help
3174 printf(" %s [-options] file(s)\n", cmdlnexec);
3176 printf("Options:\n");
3177 printf(" -? or -h display usage information\n");
3178 printf(" -a <text> <data> <bss> output absolute file\n");
3179 printf(" hex value: segment address\n");
3180 printf(" r: relocatable segment\n");
3181 printf(" x: contiguous segment\n");
3182 printf(" -b don't remove multiply defined local labels\n");
3183 printf(" -c <fname> add contents of <fname> to command line\n");
3184 printf(" -d wait for key after link\n");
3185 printf(" -e output COF absolute file\n");
3186 printf(" -g output source-level debugging\n");
3187 printf(" -i <fname> <label> incbin <fname> and set <label>\n");
3188 printf(" -l add local symbols\n");
3189 printf(" -m produce load symbols map\n");
3190 printf(" -n output no file header to .abs file\n");
3191 printf(" -o <fname> set output name\n");
3192 printf(" -r<size> section alignment size\n");
3193 printf(" w: word (2 bytes)\n");
3194 printf(" l: long (4 bytes)\n");
3195 printf(" p: phrase (8 bytes, default alignment)\n");
3196 printf(" d: double phrase (16 bytes)\n");
3197 printf(" q: quad phrase (32 bytes)\n");
3198 printf(" -s output only global symbols\n");
3199 printf(" -u allow unresolved symbols (experimental)\n");
3200 printf(" -v set verbose mode\n");
3201 printf(" -w show linker warnings\n");
3202 printf(" -z suppress banner\n");
3210 void ExitLinker(void)
3215 // Display link status if verbose mode
3217 printf("Link %s.\n", errflag ? "aborted" : "complete");
3219 // Wait for return key if requested
3222 printf("\nPress the [RETURN] key to continue. ");
3223 c = fgets(tempbuf, 128, stdin);
3230 int main(int argc, char * argv[])
3232 char * s = NULL; // String pointer for "getenv"
3233 struct HREC * utemp; // Temporary hash record pointer
3234 struct OHEADER * header; // Pointer to output header structure
3236 cmdlnexec = argv[0]; // Obtain executable name
3237 s = getenv("RLNPATH");
3239 if (s) // Attempt to obtain env variable
3240 strcpy(libdir, s); // Store it if found
3242 // Initialize some vars
3243 tval = dval = bval = 0;
3244 ttype = dtype = btype = 0;
3246 // Parse the command line
3247 if (doargs(argc, argv))
3253 if (!zflag && !vflag)
3255 ShowVersion(); // Display version information
3256 versflag = 1; // We've dumped the version banner
3259 // Load in specified files/objects and add to processing list
3266 // Work in items in processing list & deal with unresolved list
3273 // Check that there is something to link
3280 // Report unresolved externals
3281 if (unresolved != NULL)
3283 printf("UNRESOLVED SYMBOLS\n");
3285 // Don't list them if two -u's or more
3290 while (utemp != NULL)
3292 printf("\t%s (", utemp->h_sym);
3293 WriteARName(utemp->h_ofile);
3295 utemp = utemp->h_next;
3306 // Make one output file from input objs
3307 header = MakeOutputFile();
3318 printf("TO DO:Partial linking\n");
3321 // Relocatable linking
3324 printf("TO DO:Relocatable linking\n");
3332 printf("Absolute linking ");
3341 printf("Header magic is 0x%04X\n", (unsigned int)header->magic);
3343 if (WriteOutputFile(header))
3347 // Display the loaded symbols map
3349 if (ShowSymbolLoadMap(header))
3352 // Display segment size summary
3356 printf("+---------+----------+----------+----------+\n");
3357 printf("| Segment | TEXT | DATA | BSS |\n");
3358 printf("| Sizes |----------+----------+----------|\n");
3359 printf("| (Hex) | %8X | %8X | %8X |\n", (unsigned int)header->tsize, (unsigned int)header->dsize, (unsigned int)header->bsize);
3360 printf("+---------+----------+----------+----------+\n\n");