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 // For this object file, add symbols to the output symbol table after
137 // relocating them. Returns TRUE if OSTLookup returns an error (-1).
139 int DoSymbols(struct OFILE * ofile)
146 unsigned tsoSave, dsoSave, bsoSave;
148 // Point to first symbol record in the object file
149 char * symptr = (ofile->o_image + 32
150 + ofile->o_header.tsize
151 + ofile->o_header.dsize
152 + ofile->o_header.absrel.reloc.tsize
153 + ofile->o_header.absrel.reloc.dsize);
155 // Point to end of symbol record in the object file
156 char * symend = symptr + ofile->o_header.ssize;
158 // Search through object segment size table to accumulated segment sizes to
159 // ensure the correct offsets are used in the resulting COF file.
161 unsigned tsegoffset = 0, dsegoffset = 0, bsegoffset = 0;
163 // Search for object file name
164 for(j=0; j<(int)obj_index; j++)
166 if (!strcmp(ofile->o_name, obj_fname[j]))
168 // Object file name found
173 // Accumulate segment sizes
174 tsegoffset += obj_segsize[j][0];
175 dsegoffset += obj_segsize[j][1];
176 bsegoffset += obj_segsize[j][2];
181 printf("DoSymbols(): Object file missing from obj_fname: %s\n",
186 // Save segment vars, so we can restore them if needed
187 tsoSave = tsegoffset, dsoSave = dsegoffset, bsoSave = bsegoffset;
189 // Process each record in the object's symbol table
190 for(; symptr!=symend; symptr+=12)
192 index = GetLong(symptr + 0); // Obtain symbol string index
193 type = GetLong(symptr + 4); // Obtain symbol type
194 value = GetLong(symptr + 8); // Obtain symbol value
196 // Global/External symbols have a pre-processing stage
197 // N.B.: This destroys the t/d/bsegoffset discovered above. So if a
198 // local symbol follows a global/exported one, it gets wrong
199 // info! [Should be FIXED now]
200 if (type & 0x01000000)
202 // Obtain the string table index for the relocation symbol, look
203 // for it in the globals hash table to obtain information on that
205 hptr = LookupHREC(symend + index);
209 // Try to find it in the OST
210 int ostIndex = OSTLookup(symend + index);
214 printf("DoSymbols(): Symbol not found in hash table: '%s' (%s)\n", symend + index, ofile->o_name);
219 printf("DoSymbols(): Skipping symbol '%s' (%s) found in OST...\n", symend + index, ofile->o_name);
221 // If the symbol is not in any .a or .o units, it must be one
222 // of the injected ones (_TEXT_E, _DATA_E, or _BSS_E), so skip
223 // it [or maybe not? In verbose mode, we see nothing...!]
227 // Search through object segment size table to obtain segment sizes
228 // for the object that has the required external/global as a local
229 // symbol. As each object is interrogated the segment sizes are
230 // accumulated to ensure the correct offsets are used in the
231 // resulting COF file. This is effectively 'done again' only as we
232 // are working with a different object file.
234 tsegoffset = dsegoffset = bsegoffset = 0;
236 // Search for object filename
237 for(j=0; j<(int)obj_index; j++)
239 if (!strcmp(hptr->h_ofile->o_name, obj_fname[j]))
241 ssidx = j; // Symbol object filename
245 // Accumulate segment sizes
246 tsegoffset += obj_segsize[j][0];
247 dsegoffset += obj_segsize[j][1];
248 bsegoffset += obj_segsize[j][2];
253 printf("DoSymbols(): Object file missing from obj_fname: '%s:%s' symbol: '%s' (%s)\n",
254 hptr->h_ofile->o_name, hptr->h_ofile->o_arname,
255 symend + index, ofile->o_name);
259 // Update type with global type
262 // Remove external flag if absolute
263 if (type == (T_GLBL | T_ABS))
266 // If the global/external has a value then update that value in
267 // accordance with the segment sizes of the object file it
271 switch (hptr->h_type & 0x0E000000)
275 value = hptr->h_value;
278 value = hptr->h_value - hptr->h_ofile->o_header.tsize;
281 value = hptr->h_value
282 - (hptr->h_ofile->o_header.tsize
283 + hptr->h_ofile->o_header.dsize);
287 printf("DoSymbols: No adjustment made for symbol: %s (%s) = %X\n", symend + index, ofile->o_name, hptr->h_value);
291 // If *not* a global/external, use the info from passed in object
293 tsegoffset = tsoSave, dsegoffset = dsoSave, bsegoffset = bsoSave;
295 // Process and update the value dependent on whether the symbol is a
296 // debug symbol or not
297 // N.B.: These are currently not supported
298 if (type & 0xF0000000)
301 // Set the correct debug symbol base address (TEXT segment)
304 for(j=0; (unsigned)j<dosymi; j++)
305 dbgsymbase += obj_segsize[j][0];
307 switch (type & 0xFF000000)
310 value = tval + dbgsymbase;
315 value = tval + dbgsymbase + value;
320 PutLong(symptr + 8, value);
325 // Now make modifications to the symbol value, local or global,
326 // based on the segment sizes of the object file currently being
328 switch (type & T_SEG)
333 value = tbase + tsegoffset + value;
334 PutLong(symptr + 8, value);
338 value = dbase + dsegoffset + value;
340 value = dbase + dsegoffset + (value
341 - ofile->o_header.tsize);
343 PutLong(symptr + 8, value);
347 value = bbase + bsegoffset + value;
349 value = bbase + bsegoffset
350 + (value - (ofile->o_header.tsize
351 + ofile->o_header.dsize));
353 PutLong(symptr + 8, value);
360 // Add to output symbol table if global/extern, or local flag is set
361 if (isglobal(type) || lflag)
364 printf("DoSymbols: Adding symbol: %s (%s) to OST...\n", symend + index, ofile->o_name);
366 index = OSTAdd(symend + index, type, value);
370 printf("DoSymbols(): Failed to add symbol '%s' to OST!\n", symend + index);
376 // Increment dosymi processsing
384 // Free up hash memory
386 void FreeHashes(void)
390 for(i=0; i<NBUCKETS; i++)
392 struct HREC * hptr = htable[i];
396 struct HREC * htemp = hptr->h_next;
405 // Add all global and external symbols to the output symbol table
406 // [This is confusing--is it adding globals or locals? common == local!
407 // but then again, we see this in the header:
408 // #define T_COMMON (T_GLOBAL | T_EXTERN) but that could be just bullshit.]
410 // Common symbols have a different number in the "value" field of the symbol
411 // table (!0) than purely external symbols do (0). So you have to look at the
412 // type (T_GLBL) *and* the value to determine if it's a common symbol.
419 for(i=0; i<NBUCKETS; i++)
421 for(hptr=htable[i]; hptr!=NULL; hptr=hptr->h_next)
423 //NO! if (iscommon(hptr->h_type))
424 if (isglobal(hptr->h_type))// || isextern(hptr->h_type))
426 // Skip if in *.a file... (does nothing)
427 //if (hptr->h_ofile->isArchiveFile)
430 //Is this true? Couldn't an absolute be exported???
431 if (hptr->h_type == (T_GLBL | T_ABS))
432 hptr->h_type = T_ABS; // Absolutes *can't* be externals
434 if (OSTAdd(hptr->h_sym, hptr->h_type, hptr->h_value) == -1)
445 // Add a symbol's name, type, and value to the OST.
446 // Returns the index of the symbol in OST, or -1 for error.
448 int OSTAdd(char * name, int type, long value)
450 int ost_offset_p, ost_offset_e = 0; // OST table offsets for position calcs
451 int ostresult; // OST index result
452 int slen = strlen(name);
454 // If the OST or OST string table has not been initialised then do so
457 ost = malloc(OST_BLOCK);
458 oststr = malloc(OST_BLOCK);
462 printf("OST memory allocation error.\n");
468 printf("OSTSTR memory allocation error.\n");
472 ost_ptr = ost; // Set OST start pointer
473 ost_end = ost + OST_BLOCK; // Set OST end pointer
475 PutLong(oststr, 0x00000004); // Just null long for now
476 oststr_ptr = oststr + 4; // Skip size of str table long (incl null long)
477 PutLong(oststr_ptr, 0x00000000); // Null terminating long
478 oststr_end = oststr + OST_BLOCK;
482 // If next symbol record exceeds current allocation then expand symbol
483 // table and/or symbol string table.
484 ost_offset_p = (ost_ptr - ost);
485 ost_offset_e = (ost_end - ost);
487 // 3 x uint32_t (12 bytes)
488 if ((ost_ptr + 12) > ost_end)
490 // We want to allocate the current size of the OST + another block.
491 ost = realloc(ost, ost_offset_e + OST_BLOCK);
495 printf("OST memory reallocation error.\n");
499 ost_ptr = ost + ost_offset_p;
500 ost_end = (ost + ost_offset_e) + OST_BLOCK;
503 ost_offset_p = (oststr_ptr - oststr);
504 ost_offset_e = (oststr_end - oststr);
506 // string length + terminating NULL + uint32_t (terminal long)
507 if ((oststr_ptr + (slen + 1 + 4)) > oststr_end)
509 oststr = realloc(oststr, ost_offset_e + OST_BLOCK);
513 printf("OSTSTR memory reallocation error.\n");
517 oststr_ptr = oststr + ost_offset_p;
518 oststr_end = (oststr + ost_offset_e) + OST_BLOCK;
522 // If this is a debug symbol and the include debug symbol flag (-g) is not
523 // set then do nothing
524 if ((type & 0xF0000000) && !gflag)
530 // Get symbol index in OST, if any (-1 if not found)
531 ostresult = OSTLookup(name);
533 // If the symbol is in the output symbol table and the bflag is set
534 // (don't remove multiply defined locals) and this is not an
535 // external/global symbol *** OR *** the symbol is not in the output
536 // symbol table then add it.
537 if (((ostresult != -1) && bflag && !(type & 0x01000000))
538 || ((ostresult != -1) && gflag && (type & 0xF0000000))
539 || (ostresult == -1))
541 if ((type & 0xF0000000) == 0x40000000)
542 PutLong(ost_ptr, 0x00000000); // Zero string table offset for dbg line
544 PutLong(ost_ptr, (oststr_ptr - oststr)); // String table offset of symbol string
546 PutLong(ost_ptr + 4, type);
547 PutLong(ost_ptr + 8, value);
550 // If the symbol type is anything but a debug line information
551 // symbol then write the symbol string to the string table
552 if ((type & 0xF0000000) != 0x40000000)
554 strcpy(oststr_ptr, name); // Put symbol name in string table
555 *(oststr_ptr + slen) = '\0'; // Add null terminating character
556 oststr_ptr += (slen + 1);
557 PutLong(oststr_ptr, 0x00000000); // Null terminating long
558 PutLong(oststr, (oststr_ptr - oststr)); // Update size of string table
562 printf("OSTAdd: (%s), type=$%08X, val=$%08lX\n", name, type, value);
564 // is ost_index pointing one past?
565 // does this return the same regardless of if its ++n or n++?
566 // no. it returns the value of ost_index *before* it's incremented.
575 // Return the index of a symbol in the output symbol table
576 // N.B.: This is a 1-based index! (though there's no real reason for it to be)
578 int OSTLookup(char * sym)
581 int stro = 4; // Offset in string table
583 for(i=0; i<ost_index; i++)
585 if (strcmp(oststr + stro, sym) == 0)
588 stro += strlen(oststr + stro) + 1;
596 // Add unresolved externs to the output symbol table
597 // N.B.: Only adds unresolved symbols *if* they're not already in the OST
599 int DoUnresolved(void)
601 struct HREC * hptr = unresolved;
603 // Add to OST while unresolved list is valid
606 if (OSTAdd(hptr->h_sym, T_GLBL, 0L) == -1)
610 printf("DoUnresolved(): '%s' (%s:$%08X) in OST\n", hptr->h_sym, hptr->h_ofile->o_name, hptr->h_type);
612 struct HREC * htemp = hptr->h_next;
623 // Update object file TEXT and DATA segments based on relocation records. Take
624 // in an OFILE header and flag (T_TEXT, T_DATA) to process. Return (0) is
625 // successful or non-zero (1) if failed.
627 int RelocateSegment(struct OFILE * ofile, int flag)
629 char * symtab; // Start of symbol table
630 char * symbols; // Start of symbols
631 char * sptr; // Start of segment data
632 char * rptr; // Start of segment relocation records
633 unsigned symidx; // Offset to symbol
634 unsigned addr; // Relocation address
635 unsigned rflg; // Relocation flags
636 unsigned olddata; // Old segment data at reloc address
637 unsigned newdata = 0; // New segment data at reloc address
638 unsigned pad; // Temporary to calculate phrase padding
640 char sym[SYMLEN]; // String for symbol name/hash search
641 int ssidx; // Segment size table index
642 unsigned glblreloc; // Global relocation flag
643 unsigned absreloc; // Absolute relocation flag
644 unsigned relreloc; // Relative relocation flag
645 unsigned swcond; // Switch statement condition
646 unsigned relocsize; // Relocation record size
648 // If there is no TEXT relocation data for the selected object file segment
649 // then update the COF TEXT segment offset allowing for the phrase padding
650 if ((flag == T_TEXT) && !ofile->o_header.absrel.reloc.tsize)
652 // SCPCD : we should not increment the textoffset before the end of processing the object file, else data section will point to wrong textoffset
656 // If there is no DATA relocation data for the selected object file segment
657 // then update the COF DATA and BSS segment offsets allowing for the phrase
659 if ((flag == T_DATA) && !ofile->o_header.absrel.reloc.dsize)
661 // SCPCD : the T_DATA is the last section of the file, we can now increment the textoffset, dataoffset and bssoffset
663 // TEXT segment size plus padding
664 pad = ((ofile->o_header.tsize + secalign) & ~secalign);
665 textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize));
668 printf("RelocateSegment(%s, TEXT) : No relocation data\n", ofile->o_name);
670 // DATA segment size plus padding
671 pad = ((ofile->o_header.dsize + secalign) & ~secalign);
672 dataoffset += (ofile->o_header.dsize + (pad - ofile->o_header.dsize));
674 // BSS segment size plus padding
675 pad = ((ofile->o_header.bsize + secalign) & ~secalign);
676 bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize));
679 printf("RelocateSegment(%s, DATA) : No relocation data\n", ofile->o_name);
685 printf("RelocateSegment(%s, %s) : Processing Relocation Data\n",
686 ofile->o_name, flag == T_DATA ? "DATA" : "TEXT");
688 // Obtain pointer to start of symbol table
689 symtab = (ofile->o_image + 32 + ofile->o_header.tsize
690 + ofile->o_header.dsize
691 + ofile->o_header.absrel.reloc.tsize
692 + ofile->o_header.absrel.reloc.dsize);
694 // Obtain pointer to start of symbols
695 symbols = symtab + ofile->o_header.ssize;
697 // Obtain pointer to start of TEXT segment
698 sptr = ofile->o_image + 32;
700 // Obtain pointer to start of TEXT relocation records
701 rptr = sptr + (ofile->o_header.tsize + ofile->o_header.dsize);
703 relocsize = ofile->o_header.absrel.reloc.tsize;
706 printf("RELOCSIZE :: %d Records = %d\n", relocsize, relocsize / 8);
708 // Update pointers if DATA relocation records are being processed
711 sptr += ofile->o_header.tsize; // Start of DATA segment
712 rptr += ofile->o_header.absrel.reloc.tsize; // Start of DATA relocation records
713 relocsize = ofile->o_header.absrel.reloc.dsize;
716 // Process each relocation record for the TEXT segment
717 for(i=0; i<(int)relocsize; i+=8)
719 // Obtain both the relocation address and the relocation flags from the
721 addr = GetLong(rptr);
722 rflg = GetLong(rptr + 4);
723 glblreloc = (rflg & 0x00000010 ? 1 : 0);// Set global relocation flag
724 absreloc = (rflg & 0x00000040 ? 1 : 0); // Set absolute relocation flag
725 relreloc = (rflg & 0x000000A0 ? 1 : 0); // Set relative relocation flag
727 // Additional processing required for global relocations
730 // Obtain the string table index for the relocation symbol, look
731 // for it in the globals hash table to obtain information on that
732 // symbol. For the hash calculation to work correctly it must be
733 // placed in a 'clean' string before looking it up.
734 symidx = GetLong(symtab + ((rflg >> 8) * 12));
735 memset(sym, 0, SYMLEN);
736 strcpy(sym, symbols + symidx);
737 olddata = newdata = 0; // Initialise old and new segment data
738 ssidx = OSTLookup(sym);
739 newdata = GetLong(ost + ((ssidx - 1) * 12) + 8);
742 // Obtain the existing long word segment data and flip words if the
743 // relocation flags indicate it relates to a RISC MOVEI instruction
744 olddata = GetLong(sptr + addr);
747 olddata = _SWAPWORD(olddata);
749 // Process record dependant on segment it relates to; TEXT, DATA or
750 // BSS. Construct a new relocated segment long word based on the
751 // required segment base address, the segment data offset in the
752 // resulting COF file and the offsets from the incoming object file.
753 swcond = (rflg & 0xFFFFFF00);
759 case 0x00000200: // Absolute Value
761 case 0x00000400: // TEXT segment relocation record
762 // SCPCD : the symbol point to a text segment, we should use the textoffset
763 newdata = tbase + textoffset + olddata;
766 case 0x00000600: // DATA segment relocation record
767 newdata = dbase + dataoffset
768 + (olddata - ofile->o_header.tsize);
771 case 0x00000800: // BSS segment relocation record
772 newdata = bbase + bssoffset
773 + (olddata - (ofile->o_header.tsize
774 + ofile->o_header.dsize));
785 // Set absolute (long) or relative (word) address of symbol
788 // Flip the new long word segment data if the relocation record
789 // indicated a RISC MOVEI instruction and place the resulting data
790 // back in the COF segment
792 newdata = _SWAPWORD(newdata);
794 PutLong(sptr + addr, newdata);
798 PutWord(sptr + addr, newdata - tbase - addr - ofile->o_tbase);
801 // Shamus: Let's output some info to aid in debugging this crap
808 sprintf(ssiString, " [ssi:%i]", ssidx);
810 printf("RelocateSegment($%08X): %s, $%08X: $%08X => $%08X%s\n", rflg, (glblreloc ? sym : "(LOCAL)"), addr, olddata, GetLong(sptr + addr), ssiString);
813 rptr += 8; // Point to the next relocation record
816 // Update the COF segment offset allowing for the phrase padding.
817 // SCPCD : we should not increment the textoffset before the end of processing the object file, else data section will point to wrong textoffset
820 // TEXT segment plus padding
821 pad = ((ofile->o_header.tsize + secalign) & ~secalign);
822 textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize));
824 // DATA segment plus padding
825 pad = ((ofile->o_header.dsize + secalign) & ~secalign);
826 dataoffset += (ofile->o_header.dsize + (pad - ofile->o_header.dsize));
828 // BSS segment plus padding
829 pad = ((ofile->o_header.bsize + secalign) & ~secalign);
830 bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize));
833 // Return value, should always be zero
839 // Add a path character to the end of string 's' if it doesn't already end with
840 // one. The last occurrance of '/' or '\' in the string is assumed to be the
843 // This is fucking shit. We know what the path delimiter is, its FUCKING
844 // DEFINED IN THE FUCKING HEADER. FOR FUCKS SAKE. AND YES, HOPE TO GOD THERE'S
845 // ENOUGH SPACE IN THE PASSED IN BUFFER TO HOLD THE EXTRA CHARACTER!
847 void AppendPathDelimiter(char * s)
850 // And hope to God that there's enough space in the buffer...
855 if (*s == '/' || *s == '\\')
869 int length = strlen(s);
871 if (s[length - 1] != PATH_DELIMITER)
873 s[length] = PATH_DELIMITER;
874 s[length + 1] = 0; // BUFFER OVERFLOW!!!! FFFFFFFFUUUUUUUUUUUU
881 // Try to open "name", "name.o", "${libdir}name", "${libdir}name.o". Return the
882 // handle of the file successfully opened. p_name is updated to point to a
883 // malloc()'ed string which is the name which actually got opened. p_name will
884 // return unchanged if the file can't be found.
886 int TryOpenFile(char ** p_name)
888 char * name = *p_name;
890 // Note that libdir will be an empty string if there is none specified
891 char * tmpbuf = malloc(strlen(name) + strlen(libdir) + 3);
895 printf("TryOpenFile() : out of memory\n");
899 strcpy(tmpbuf, name);
900 int hasdot = (strrchr(tmpbuf, '.') > strrchr(tmpbuf, PATH_DELIMITER));
901 // Try to open file as passed first
902 int fd = open(tmpbuf, _OPEN_FLAGS);
909 // Try to open file with '.o' added
910 strcat(tmpbuf, ".o");
911 fd = open(tmpbuf, _OPEN_FLAGS);
917 // Try the libdir only if the name isn't already anchored
918 // Shamus: WTH, this makes no sense... Why the ':'? Is this a Macintosh??
919 // if (*name != '/' && *name != '\\' && !strchr(name, ':'))
920 if ((*name != PATH_DELIMITER) && (strchr(name, ':') == NULL))
922 strcpy(tmpbuf, libdir);
923 // Add a trailing path char if there isn't one already
924 AppendPathDelimiter(tmpbuf);
925 strcat(tmpbuf, name);
927 if ((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0)
932 strcat(tmpbuf, ".o");
934 if ((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0)
939 // Couldn't open file at all
942 // There are worse things... :-P
944 tmpbuf = realloc(tmpbuf, strlen(tmpbuf) + 1);
948 printf("TryOpenFile() : out of memory\n");
958 // What it says on the tin
960 void WriteARName(struct OFILE * p)
962 int flag = *(p->o_arname);
963 printf("%s%s%s", (flag ? (char *)(p->o_arname) : ""), (flag ? ":" : ""), p->o_name);
968 // Collect file names and handles in a buffer so there is less disk activity.
969 // Call DoFile with flag FALSE for normal object files and archives.
970 // Call it with flag TRUE and a symbol name for include files (-i).
972 int DoFile(char * fname, int incFlag, char * sym)
974 // Verbose information
977 printf("DoFile() : `%s' %s", fname, incFlag ? "INCLUDE" : "NORMAL");
980 printf(" symbol %s", sym);
985 // Reached maximum file handles
992 // Attempt to open input file
993 int fd = TryOpenFile(&fname);
997 printf("Cannot find input module %s\n", fname);
1001 // The file is open; save its info in the handle and name arrays
1003 name[hd] = fname; // This is the name from TryOpenFile()
1004 hflag[hd] = incFlag;
1009 int temp = strlen(sym); // Get symbol length
1011 // 100 chars is max length of a symbol
1018 // Malloc enough space for two symbols, then build the second one.
1019 // Second one may be one character longer than first
1020 if ((hsym1[hd] = malloc((long)temp + 1)) == NULL
1021 || (hsym2[hd] = malloc((long)temp + 2)) == NULL)
1023 printf("DoFile() : out of memory for include-file symbols\n");
1027 strcpy(hsym1[hd], sym);
1028 strcpy(hsym2[hd], sym);
1034 printf("Last char of %s is already 'x': choose another name\n", sym);
1038 hsym2[hd][99] = 'x';
1042 hsym2[hd][temp] = 'x';
1043 hsym2[hd][temp+1] = '\0';
1047 // Increment next handle index
1055 // Pad TEXT or DATA segment to the requested boundary
1057 int PadSegment(FILE * fd, long segsize, int value)
1063 // Determine the number of padding bytes that are needed
1064 long padsize = (segsize + secalign) & ~secalign;
1065 padsize = padsize - segsize;
1067 // Fill pad array if padding is required
1074 PutWord(padptr, value);
1078 symoffset += padsize;
1080 // Write padding bytes
1081 if (fwrite(padarray, padsize, 1, fd) != 1)
1090 // Write the output file
1092 int WriteOutputFile(struct OHEADER * header)
1094 unsigned osize; // Object segment size
1095 struct OFILE * otemp; // Object file pointer
1096 int i, j; // Iterators
1097 char himage[0x168]; // Header image (COF = 0xA8)
1098 unsigned tsoff, dsoff, bsoff; // Segment offset values
1099 unsigned index, type, value; // Symbol table index, type and value
1100 short abstype; // ABS symbol type
1101 char symbol[14]; // Symbol record for ABS files
1102 int slen; // Symbol string length
1104 symoffset = 0; // Initialise symbol offset
1106 // Add correct output extension if none
1107 if (strchr(ofile, '.') == NULL)
1110 strcat(ofile, ".cof"); // COF files
1111 else if (aflag && !cflag)
1112 strcat(ofile, ".abs"); // ABS files
1114 strcat(ofile, ".o"); // Object files (partial linking etc)
1117 FILE * fd = fopen(ofile, "wb"); // Attempt to open output file
1121 printf("Can't open output file %s\n", ofile);
1125 // Build the output file header
1126 // Absolute (COF) header
1129 tsoff = dsoff = bsoff = 0xA8; // Initialises segment offsets
1131 // Process each object file segment size to obtain a cumulative segment
1132 // size for both the TEXT and DATA segments
1133 for(i=0; i<(int)obj_index; i++)
1135 dsoff += obj_segsize[i][0]; // Adding TEXT segment sizes
1136 bsoff += obj_segsize[i][0] + obj_segsize[i][1]; // Adding TEXT and DATA segment sizes
1139 // Currently this only builds a COF absolute file. Conditionals and
1140 // additional code will need to be added for ABS and partial linking.
1142 // Build the COF_HDR
1143 PutWord(himage + 0, 0x0150 ); // Magic Number (0x0150)
1144 PutWord(himage + 2, 0x0003 ); // Sections Number (3)
1145 PutLong(himage + 4, 0x00000000 ); // Date (0L)
1146 PutLong(himage + 8, dsoff + header->dsize); // Offset to Symbols Section
1147 PutLong(himage + 12, ost_index); // Number of Symbols
1148 PutWord(himage + 16, 0x001C ); // Size of RUN_HDR (0x1C)
1149 PutWord(himage + 18, 0x0003 ); // Executable Flags (3)
1151 // Build the RUN_HDR
1152 PutLong(himage + 20, 0x00000107 ); // Magic/vstamp
1153 PutLong(himage + 24, header->tsize ); // TEXT size in bytes
1154 PutLong(himage + 28, header->dsize ); // DATA size in bytes
1155 PutLong(himage + 32, header->bsize ); // BSS size in bytes
1156 PutLong(himage + 36, tbase ); // Start of executable, normally @TEXT
1157 PutLong(himage + 40, tbase ); // @TEXT
1158 PutLong(himage + 44, dbase ); // @DATA
1160 // Build the TEXT SEC_HDR
1161 PutLong(himage + 48, 0x2E746578 );
1162 PutLong(himage + 52, 0x74000000 ); // ".text"
1163 PutLong(himage + 56, tbase ); // TEXT START
1164 PutLong(himage + 60, tbase ); // TEXT START
1165 PutLong(himage + 64, header->tsize ); // TEXT size in bytes
1166 PutLong(himage + 68, tsoff ); // Offset to section data in file
1167 PutLong(himage + 72, 0x00000000 ); // Offset to section reloc in file (0L)
1168 PutLong(himage + 76, 0x00000000 ); // Offset to debug lines structures (0L)
1169 PutLong(himage + 80, 0x00000000 ); // Nreloc/nlnno (0L)
1170 PutLong(himage + 84, 0x00000020 ); // SEC_FLAGS: STYP_TEXT
1172 // Build the DATA SEC_HDR
1173 PutLong(himage + 88, 0x2E646174 );
1174 PutLong(himage + 92, 0x61000000 ); // ".data"
1175 PutLong(himage + 96, dbase ); // DATA START
1176 PutLong(himage + 100, dbase ); // DATA START
1177 PutLong(himage + 104, header->dsize ); // DATA size in bytes
1178 PutLong(himage + 108, dsoff ); // Offset to section data in file
1179 PutLong(himage + 112, 0x00000000 ); // Offset to section reloc in file (0L)
1180 PutLong(himage + 116, 0x00000000 ); // Offset to debugging lines structures (0L)
1181 PutLong(himage + 120, 0x00000000 ); // Nreloc/nlnno (0L)
1182 PutLong(himage + 124, 0x00000040 ); // SEC_FLAGS: STYP_DATA
1184 // Build the BSS SEC_HDR
1185 PutLong(himage + 128, 0x2E627373 );
1186 PutLong(himage + 132, 0x00000000 ); // ".bss"
1187 PutLong(himage + 136, bbase ); // BSS START
1188 PutLong(himage + 140, bbase ); // BSS START
1189 PutLong(himage + 144, header->bsize ); // BSS size in bytes
1190 PutLong(himage + 148, bsoff ); // Offset to section data in file
1191 PutLong(himage + 152, 0x00000000 ); // Offset to section reloc in file (0L)
1192 PutLong(himage + 156, 0x00000000 ); // Offset to debugging lines structures (0L)
1193 PutLong(himage + 160, 0x00000000 ); // Nreloc/nlnno (0L)
1194 PutLong(himage + 164, 0x00000080 ); // SEC_FLAGS: STYP_BSS
1196 symoffset = 168; // Update symbol offset
1198 // Absolute (ABS) header
1201 // Build the ABS header
1202 PutWord(himage + 0, 0x601B ); // Magic Number (0x601B)
1203 PutLong(himage + 2, header->tsize ); // TEXT segment size
1204 PutLong(himage + 6, header->dsize ); // DATA segment size
1205 PutLong(himage + 10, header->bsize ); // BSS segment size
1206 PutLong(himage + 14, ost_index * 14 ); // Symbol table size (?)
1207 PutLong(himage + 18, 0x00000000 ); //
1208 PutLong(himage + 22, tbase ); // TEXT base address
1209 PutWord(himage + 26, 0xFFFF ); // Flags (?)
1210 PutLong(himage + 28, dbase ); // DATA base address
1211 PutLong(himage + 32, bbase ); // BSS base address
1213 symoffset = 36; // Update symbol offset
1216 // Write the header, but not if noheaderflag
1217 // Absolute (ABS) header
1221 if (fwrite(himage, 36, 1, fd) != 1)
1224 // Absolute (COF) header
1227 if (fwrite(himage, 168, 1, fd) != 1)
1231 // Write the TEXT segment of each object file
1232 for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
1234 osize = otemp->o_header.tsize;
1236 // Write only if segment has size
1240 printf("Writing TEXT Segment of %s\n", otemp->o_name);
1242 if (fwrite(otemp->o_image + 32, osize, 1, fd) != 1)
1245 // Pad to required alignment boundary
1246 if (PadSegment(fd, osize, 0x0000))
1253 // Write the DATA segment of each object file
1254 for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
1256 osize = otemp->o_header.dsize;
1258 // Write only if the segment has size
1262 printf("Writing DATA Segment of %s\n", otemp->o_name);
1264 if (fwrite((otemp->o_image + 32 + otemp->o_header.tsize), osize, 1, fd) != 1)
1267 // Pad to required alignment boundary
1268 if (PadSegment(fd, osize, 0))
1277 // Write the symbols table and string table
1278 // Absolute (COF) symbol/string table
1283 if (fwrite(ost, (ost_ptr - ost), 1, fd) != 1)
1286 if (fwrite(oststr, (oststr_ptr - oststr), 1, fd) != 1)
1290 // Absolute (ABS) symbol/string table
1293 // The symbol and string table have been created as part of the
1294 // DoSymbols() function and the output symbol and string tables are
1295 // in COF format. For an ABS file we need to process through this
1296 // to create the 14 character long combined symbol and string
1297 // table. Format of symbol table in ABS: AAAAAAAATTVVVV, where
1298 // (A)=STRING, (T)=TYPE & (V)=VALUE
1300 for(i=0; i<ost_index; i++)
1302 memset(symbol, 0, 14); // Initialise symbol record
1303 abstype = 0; // Initialise ABS symbol type
1304 slen = 0; // Initialise symbol string length
1305 index = GetLong(ost + (i * 12)); // Get symbol index
1306 type = GetLong((ost + (i * 12)) + 4); // Get symbol type
1308 // Skip debug symbols
1309 if (type & 0xF0000000)
1313 value = GetLong((ost + (i * 12)) + 8);
1314 slen = strlen(oststr + index);
1316 // Get symbol string (maximum 8 chars)
1320 *(symbol + j) = *(oststr + index + j);
1324 for(j=0; j<slen; j++)
1325 *(symbol + j) = *(oststr + index + j);
1328 // Modify to ABS symbol type
1331 case 0x02000000: abstype = (short)ABST_DEFINED; break;
1332 case 0x04000000: abstype = (short)ABST_DEFINED | ABST_TEXT; break;
1333 case 0x05000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_TEXT; break;
1334 case 0x06000000: abstype = (short)ABST_DEFINED | ABST_DATA; break;
1335 case 0x07000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_DATA; break;
1336 case 0x08000000: abstype = (short)ABST_DEFINED | ABST_BSS; break;
1337 case 0x09000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_BSS; break;
1339 printf("warning (WriteOutputFile): ABS, cannot determine symbol type ($%08X)\n", type);
1344 PutWord(symbol + 8, abstype); // Write back new ABS type
1345 PutLong(symbol + 10, value); // Write back value
1347 // Write symbol record
1348 if (fwrite(symbol, 14, 1, fd) != 1)
1357 printf("Close error on output file %s\n",ofile);
1364 printf("Write error on output file %s\n", ofile);
1365 fclose(fd); // Try to close output file anyway
1371 // Display the symbol load map
1373 int ShowSymbolLoadMap(struct OHEADER * header)
1375 unsigned i, o; // Inner and outer loop iterators
1376 unsigned c; // Column number
1377 unsigned index; // Symbol string index
1378 unsigned type; // Symbol type
1379 unsigned value; // Symbol value
1380 char * symbol; // Symbol string value
1383 return 0; // Return if no symbols to map
1385 printf("LOAD MAP\n\n");
1387 // Outer loop for each of the symbol areas to map out;
1388 // 0 = NON-RELOCATABLE SYMBOLS
1389 // 1 = TEXT-SEGMENT RELOCATABLE SYMBOLS
1390 // 2 = DATA-SEGMENT RELOCATABLE SYMBOLS
1391 // 3 = BSS-SEGMENT RELOCATABLE SYMBOLS
1394 // Display the correct map header for the symbols being processed
1397 case 0: printf("NON-RELOCATABLE SYMBOLS\n\n"); break;
1398 case 1: printf("TEXT-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
1399 case 2: printf("DATA-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
1400 case 3: printf("BSS-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
1403 c = 0; // Initialise column number
1405 // Inner loop to process each record in the symbol table
1406 for(i=0; i<(unsigned)ost_index; i++)
1408 index = GetLong(ost + (i * 12)); // Get symbol string index
1409 type = GetLong(ost + (i * 12) + 4); // Get symbol type
1410 value = GetLong(ost + (i * 12) + 8); // Get symbol value
1411 symbol = oststr + index; // Get symbol string
1413 // Display only three columns
1420 // If local symbols not included and the type is local then go to
1421 // next symbol record
1422 if (!lflag & !(type & 0x01000000))
1425 // Output each symbol to the display, dependant on type
1429 // Non-relocatable symbols
1430 if (type == 0x02000000 || type == 0x03000000)
1432 printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1438 // TEXT segment relocatable symbols
1439 if (type == 0x04000000 || type == 0x05000000)
1441 printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1447 // DATA segment relocatble symbols
1448 if (type == 0x06000000 || type == 0x07000000)
1450 printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1456 // BSS segment relocatable symbols
1457 if (type == 0x08000000 || type == 0x09000000)
1459 printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1475 // Stuff the (long) value of a string into the value argument. RETURNS TRUE if
1476 // the string doesn't parse. Parses only as a hexadecimal string.
1478 int GetHexValue(char * string, int * value)
1482 while (isxdigit(*string))
1484 if (isdigit(*string))
1486 *value = (*value << 4) + (*string++ - '0');
1490 if (isupper(*string))
1491 *string = tolower(*string);
1493 *value = (*value << 4) + ((*string++ - 'a') + 10);
1497 if (*string != '\0')
1499 printf("Invalid hexadecimal value");
1508 // Create one big .o file from the images already in memory, returning a
1509 // pointer to an OHEADER. Note that the oheader is just the header for the
1510 // output (plus some other information). The text, data, and fixups are all
1511 // still in the ofile images hanging off the global `olist'.
1513 struct OHEADER * MakeOutputFile()
1515 unsigned tptr, dptr, bptr; // Bases in runtime model
1516 int ret = 0; // Return value
1517 struct OHEADER * header; // Output header pointer
1519 // Initialize cumulative segment sizes
1520 textsize = datasize = bsssize = 0;
1522 // For each object file, accumulate the sizes of the segments but remove
1523 // those object files which are unused
1524 struct OFILE * oprev = NULL; // Init previous obj file list ptr
1525 struct OFILE * otemp = olist; // Set temp pointer to object file list
1528 while (otemp != NULL)
1530 // UNUSED !!!!! (it's !O_ARCHIVE, so this code executes.)
1531 if (!(otemp->o_flags & O_ARCHIVE))
1533 if ((otemp->o_flags & O_USED) == 0)
1537 printf("Unused object file ");
1539 printf(" discarded.\n");
1542 // Drop the entry from the linked list
1544 olist = otemp->o_next;
1546 oprev->o_next = otemp->o_next;
1548 // Free the object entry if it's not an archive file
1549 if (!otemp->isArchiveFile)
1550 free(otemp->o_image);
1552 // Also need to remove them from the obj_* tables too :-P
1553 // N.B.: Would probably be worthwhile to remove crap like this
1554 // and stuff it into the OFILE structure...
1556 printf("»-> removing %s... (index == %i, len == %i)\n", obj_fname[i], i, obj_index - 1);
1560 for(k=i; k<obj_index-1; k++)
1562 memcpy(obj_fname[k], obj_fname[k + 1], FNLEN);
1563 obj_segsize[k][0] = obj_segsize[k + 1][0];
1564 obj_segsize[k][1] = obj_segsize[k + 1][1];
1565 obj_segsize[k][2] = obj_segsize[k + 1][2];
1573 // Increment total of segment sizes ensuring requested
1575 textsize += (otemp->o_header.tsize + secalign) & ~secalign;
1576 datasize += (otemp->o_header.dsize + secalign) & ~secalign;
1577 bsssize += (otemp->o_header.bsize + secalign) & ~secalign;
1582 // Go to next object file list pointer
1583 otemp = otemp->o_next;
1587 // Update base addresses and inject the symbols _TEXT_E, _DATA_E and _BSS_E
1593 // DATA follows TEXT
1594 dbase = tval + textsize;
1598 bbase = tval + textsize + datasize;
1600 // BSS is independent of DATA
1605 // DATA is independant of TEXT
1610 bbase = dval + datasize;
1612 // BSS is independent of DATA
1616 OSTAdd("_TEXT_E", 0x05000000, tbase + textsize);
1617 OSTAdd("_DATA_E", 0x07000000, dbase + datasize);
1618 OSTAdd("_BSS_E", 0x09000000, bbase + bsssize);
1620 // Place each unresolved symbol in the output symbol table
1621 // N.B.: It only gets here to do this if user passes in -u flag
1622 // [Only used here, once]
1626 // Initialise base addresses
1627 tptr = dptr = bptr = 0;
1629 // For each file, relocate its symbols and add them to the output symbol
1634 while (otemp != NULL)
1636 otemp->o_tbase = tptr;
1638 // Do rest only for non-ARCHIVE markers
1639 if (!(otemp->o_flags & O_ARCHIVE))
1641 otemp->o_dbase = dptr;
1642 otemp->o_bbase = bptr;
1643 tptr += (otemp->o_header.tsize + secalign) & ~secalign;
1644 dptr += (otemp->o_header.dsize + secalign) & ~secalign;
1645 bptr += (otemp->o_header.bsize + secalign) & ~secalign;
1648 // For each symbol, (conditionally) add it to the ost
1649 // For ARCHIVE markers, this adds the symbol for the file & returns
1650 // (Shamus: N.B. it does no such thing ATM)
1651 // [Only used here, once]
1652 if (DoSymbols(otemp))
1655 if (otemp->o_flags & O_ARCHIVE)
1657 struct OFILE * oNext = otemp->o_next;
1659 // Now that the archive is marked, remove it from list
1661 olist = otemp->o_next;
1663 oprev->o_next = otemp->o_next;
1665 if (otemp->o_image && !otemp->isArchiveFile)
1666 free(otemp->o_image);
1674 otemp = otemp->o_next;
1678 // Places all the externs, globals etc into the output symbol table
1679 if (DoCommon() == -1)
1682 // Create a new output file header
1683 header = new_oheader();
1687 printf("MakeOutputFile: out of memory!\n");
1691 // Fill in the output header. Does not match the actual output but values
1692 // used as reference
1693 header->magic = 0x0150; // COF magic number
1694 header->tsize = textsize; // TEXT segment size
1695 header->dsize = datasize; // DATA segment size
1696 header->bsize = bsssize; // BSS segment size
1697 header->ssize = (ost_ptr - ost); // Symbol table size
1698 header->ostbase = ost; // Output symbol table base address
1700 // For each object file, relocate its TEXT and DATA segments. OR the result
1701 // into ret so all files get moved (and errors reported) before returning
1702 // with the error condition
1703 for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
1705 if (!(otemp->o_flags & O_ARCHIVE))
1707 ret |= RelocateSegment(otemp, T_TEXT); // TEXT segment relocations
1708 ret |= RelocateSegment(otemp, T_DATA); // DATA segment relocations
1712 // Done with global symbol hash tables
1715 return (ret ? (struct OHEADER *)NULL : header);
1720 // Add symbol to hash list
1722 int AddSymbolToHashList(struct HREC ** hptr, char * sym, struct OFILE * ofile,
1723 long value, int type)
1725 struct HREC * htemp = new_hrec();
1729 printf("Out of memory\n");
1733 // Shamus: Moar testing...
1736 printf("AddSymbolToHashList(): hptr=$%08X, sym=\"%s\", ofile=$%08X, value=$%X, type=$%X\n", hptr, sym, ofile, value, type);
1739 // Populate hash record
1740 memset(htemp->h_sym, 0, SYMLEN);
1741 strcpy(htemp->h_sym, sym);
1742 htemp->h_ofile = ofile;
1743 htemp->h_value = value;
1744 htemp->h_type = type;
1746 // Add new hash to the front of the list (hence the ** for hptr)
1747 htemp->h_next = *hptr;
1755 // Add symbol to the unresolved symbols hash table (really, it's a linked list)
1757 int AddUnresolvedSymbol(char * sym, struct OFILE * ofile)
1760 printf("AddUnresolvedSymbol(%s, %s)\n", sym, ofile->o_name);
1762 return AddSymbolToHashList(&unresolved, sym, ofile, 0L, 0);
1767 // Remove the HREC from the unresolved symbol list, and pass back a pointer
1768 // to the spot where the HREC was.
1770 struct HREC * RemoveUnresolvedSymbol(struct HREC * hrec)
1772 struct HREC * ptr = unresolved;
1773 struct HREC * previous = NULL;
1775 while ((ptr != hrec) && (ptr != NULL))
1785 struct HREC * next = ptr->h_next;
1787 // Remove the head if nothing previous, otherwise, remove what we found
1788 if (previous == NULL)
1791 previous->h_next = next;
1799 // Add symbol to the unresolved symbols hash table
1801 int AddARSymbol(char * sym, struct OFILE * ofile)
1804 printf("AddARSymbol(%s, %s)\n", sym, ofile->o_name);
1806 return AddSymbolToHashList(&arSymbol, sym, ofile, 0L, 0);
1811 // Generate hash value from the 1st 15 characters of the symbol modulo the
1812 // number of buckets in the hash.
1814 int GetHash(char * s)
1816 // For this to be consistent, the symbol MUST be zeroed out beforehand!
1817 // N.B.: strncpy() pads zeroes for us, if the symbol is less than 15 chars.
1821 int i = (c[0] + c[1] + c[2] + c[3] + c[4] + c[5] + c[6] + c[7] + c[8]
1822 + c[9] + c[10] + c[11] + c[12] + c[13] + c[14]) % NBUCKETS;
1828 // Lookup a symbol in the hash table.
1829 // Returns either a pointer to the HREC or NULL if not found.
1831 struct HREC * LookupHREC(char * symbol)
1833 struct HREC * hptr = htable[GetHash(symbol)];
1835 while (hptr != NULL)
1837 //This is utter failure...
1838 // if (symcmp(symbol, hptr->h_sym)) <-- left here for giggles :D - LinkoVitch
1839 // Return hash record pointer if found
1840 if (strcmp(symbol, hptr->h_sym) == 0)
1843 hptr = hptr->h_next;
1851 // Lookup a symbol in the AR symbol table.
1852 // Returns either a pointer to the HREC or NULL if not found.
1854 struct HREC * LookupARHREC(char * symbol)
1856 struct HREC * hptr = arSymbol;
1858 while (hptr != NULL)
1860 // Return hash record pointer if found
1861 if (strcmp(symbol, hptr->h_sym) == 0)
1864 hptr = hptr->h_next;
1872 // Add the imported symbols from this file to unresolved, and the global and
1873 // common (???) symbols to the exported hash table.
1875 // Change old-style commons (type == T_EXTERN, value != 0) to new-style ones
1876 // (type == (T_GLOBAL | T_EXTERN)). [??? O_o]
1877 // [N.B.: Whoever wrote the above didn't know what the fuck they were talking
1878 // about. Commons (globals) are exactly what they are calling 'old
1879 // style'. Also note, that there is no "T_GLOBAL" or "T_EXTERN" symbols
1880 // defined anywhere in the code.]
1882 int AddSymbols(struct OFILE * Ofile)
1884 struct HREC * hptr; // Hash record pointer
1888 printf("AddSymbols: for file %s\n", Ofile->o_name);
1889 printf(" t_bbase = $%X\n", Ofile->o_tbase);
1890 printf(" d_bbase = $%X\n", Ofile->o_dbase);
1891 printf(" o_bbase = $%X\n", Ofile->o_bbase);
1892 printf(" tsize = $%X\n", Ofile->o_header.tsize);
1893 printf(" dsize = $%X\n", Ofile->o_header.dsize);
1894 printf(" bsize = $%X\n", Ofile->o_header.bsize);
1895 printf(" reloc.tsize = $%X\n", Ofile->o_header.absrel.reloc.tsize);
1896 printf(" reloc.dsize = $%X\n", Ofile->o_header.absrel.reloc.dsize);
1899 // Get base pointer, start of sym fixups
1900 char * ptr = Ofile->o_image + 32
1901 + Ofile->o_header.tsize
1902 + Ofile->o_header.dsize
1903 + Ofile->o_header.absrel.reloc.tsize
1904 + Ofile->o_header.absrel.reloc.dsize;
1905 char * sfix = ptr; // Set symbol fixup pointer
1906 char * sstr = sfix + Ofile->o_header.ssize; // Set symbol table pointer
1907 long nsymbols = Ofile->o_header.ssize / 12; // Obtain number of symbols
1911 long index = GetLong(sfix); // Get symbol string index
1912 long type = GetLong(sfix + 4); // Get symbol type
1913 long value = GetLong(sfix + 8); // Get symbol value
1915 if ((Ofile->isArchiveFile) && !(Ofile->o_flags & O_USED))
1917 if ((type & T_GLBL) && (type & (T_SEG | T_ABS)))
1918 if (AddARSymbol(sstr + index, Ofile))
1921 else if (type == T_GLBL)
1923 // External symbol that is *not* in the current unit
1924 // N.B.: Also, could be common symbol *in* current unit...!
1925 hptr = LookupHREC(sstr + index);
1928 hptr->h_ofile->o_flags |= O_USED; // Mark .o file as used
1929 // Otherwise, *maybe* add to unresolved list
1932 // Check to see if this is a common symbol; if so, try to add
1933 // it to the hash list...
1936 // Actually, we need to convert this to a BSS symbol,
1937 // increase the size of the BSS segment for this object, &
1938 // add it to the hash list
1939 uint32_t bssLocation = Ofile->o_header.tsize + Ofile->o_header.dsize + Ofile->o_header.bsize;
1940 Ofile->o_header.bsize += value;
1942 value = bssLocation;
1943 PutLong(sfix + 4, type);
1944 PutLong(sfix + 8, value);
1947 printf("AddSymbols: Resetting common label to BSS label\n");
1949 if (AddSymbolToHashList(&htable[GetHash(sstr + index)],
1950 sstr + index, Ofile, value, type))
1953 // Check for built-in externals...
1954 else if ((strcmp(sstr + index, "_TEXT_E") != 0)
1955 && (strcmp(sstr + index, "_DATA_E") != 0)
1956 && (strcmp(sstr + index, "_BSS_E") != 0))
1958 if (AddUnresolvedSymbol(sstr + index, Ofile))
1959 return 1; // Error if addition failed
1963 else if ((type & T_GLBL) && (type & (T_SEG | T_ABS)))
1965 hptr = LookupHREC(sstr + index);
1967 // Symbol isn't in the table, so try to add it:
1970 if (AddSymbolToHashList(&htable[GetHash(sstr + index)],
1971 sstr + index, Ofile, value, type))
1976 // Symbol already exists, decide what to do about it
1977 // [N.B.: This isn't a check for a common symbol...
1978 // BEWARE OF BAD INTERPRETATIONS!!]
1979 if (iscommon(hptr->h_type))
1981 // Mismatch: common came first; warn and keep the global
1984 printf("Warning: %s: global from ", sstr + index);
1986 printf(" used, common from ");
1987 WriteARName(hptr->h_ofile);
1988 printf(" discarded.\n");
1991 hptr->h_ofile = Ofile;
1992 hptr->h_type = type;
1993 hptr->h_value = value;
1997 // Global exported by another ofile; warn and make this one
2001 printf("Duplicate symbol %s: ", sstr + index);
2002 WriteARName(hptr->h_ofile);
2005 printf(" discarded\n");
2008 // Set the global in this unit to pure external
2009 // (is this a good idea? what if the other one is a ref to
2011 PutLong(sfix + 4, T_GLBL);
2016 sfix += 12; // Increment symbol fixup pointer
2017 nsymbols--; // Decrement num of symbols to process
2020 // Success loading symbols
2026 // Process object file for symbols
2028 int DoItem(struct OFILE * obj)
2030 // Allocate memory for object record ptr
2031 struct OFILE * Ofile = new_ofile();
2035 printf("Out of memory while processing %s\n", obj->o_name);
2039 // Starting after all pathnames, etc., copy .o file name to Ofile
2040 char * temp = PathTail(obj->o_name);
2042 // Check filename length
2043 if (strlen(temp) > FNLEN - 1)
2045 printf("File name too long: %s\n", temp);
2049 // Check archive name length
2050 if (strlen(obj->o_arname) > FNLEN - 1)
2052 printf("Archive name too long: %s\n", obj->o_arname);
2056 strcpy(Ofile->o_name, temp); // Store filename
2057 strcpy(Ofile->o_arname, obj->o_arname); // Store archive name
2059 // Initialise object record information
2060 Ofile->o_next = NULL;
2064 Ofile->o_flags = obj->o_flags;
2065 Ofile->o_image = obj->o_image;
2066 Ofile->isArchiveFile = obj->isArchiveFile;
2067 char * ptr = obj->o_image;
2069 // Don't do anything if this is just an ARCHIVE marker, just add the file
2071 // (Shamus: N.B.: it does no such ARCHIVE thing ATM)
2072 if (!(obj->o_flags & O_ARCHIVE))
2074 Ofile->o_header.magic = GetLong(ptr);
2075 Ofile->o_header.tsize = GetLong(ptr + 4);
2076 Ofile->o_header.dsize = GetLong(ptr + 8);
2077 Ofile->o_header.bsize = GetLong(ptr + 12);
2078 Ofile->o_header.ssize = GetLong(ptr + 16);
2079 Ofile->o_header.absrel.reloc.tsize = GetLong(ptr + 24);
2080 Ofile->o_header.absrel.reloc.dsize = GetLong(ptr + 28);
2082 // Round BSS off to alignment boundary
2083 Ofile->o_header.bsize = (Ofile->o_header.bsize + secalign) & ~secalign;
2085 if ((Ofile->o_header.dsize & 7) && wflag)
2087 printf("Warning: data segment size of ");
2089 printf(" is not a phrase multiple\n");
2092 // Check for odd segment sizes
2093 if ((Ofile->o_header.tsize & 1) || (Ofile->o_header.dsize & 1)
2094 || (Ofile->o_header.bsize & 1))
2096 printf("Error: odd-sized segment in ");
2098 printf("; link aborted.\n");
2102 if (AddSymbols(Ofile))
2106 // Add this file to the olist
2110 olast->o_next = Ofile;
2118 // Handle items in processing list.
2120 // After loading all objects, archives & include files, we now go and process
2121 // each item on the processing list (plist). Once this is done, we go through
2122 // any unresolved symbols left and see if they have shown up.
2124 int ProcessLists(void)
2126 // Process object file list first (adds symbols from each unit & creates
2128 while (plist != NULL)
2133 struct OFILE * ptemp = plist;
2134 plist = plist->o_next;
2140 // Process the unresolved symbols list. This may involve pulling in symbols
2141 // from any included .a units. Such units are lazy linked by default; we
2142 // generally don't want everything they provide, just what's referenced.
2143 for(uptr=unresolved; uptr!=NULL; )
2146 printf("LookupHREC(%s) => ", uptr->h_sym);
2148 struct HREC * htemp = LookupHREC(uptr->h_sym);
2152 // Found it in the symbol table!
2154 printf("%s in %s (=$%06X)\n", (isglobal(htemp->h_type) ? "global" : "common"), htemp->h_ofile->o_name, htemp->h_value);
2156 // Mark the .o unit that the symbol is in as seen & remove from the
2158 htemp->h_ofile->o_flags |= O_USED;
2159 uptr = RemoveUnresolvedSymbol(uptr);
2166 // Check to see if the unresolved symbol is on the AR symbol list.
2167 htemp = LookupARHREC(uptr->h_sym);
2169 // If the unresolved symbol is in a .o unit that is unused, we can
2170 // drop it; same if the unresolved symbol is in the exported AR
2171 // symbol list. Otherwise, go to the next unresolved symbol.
2172 if (!(uptr->h_ofile->o_flags & O_USED) || (htemp != NULL))
2173 uptr = RemoveUnresolvedSymbol(uptr);
2175 uptr = uptr->h_next;
2177 // Now that we've possibly deleted the symbol from unresolved list
2178 // that was also in the AR list, we add the symbols from this .o
2179 // unit to the symbol table, mark the .o unit as used, and restart
2180 // scanning the unresolved list as there is a good possibility that
2181 // the symbols in the unit we're adding has unresolved symbols as
2185 htemp->h_ofile->o_flags |= O_USED;
2186 AddSymbols(htemp->h_ofile);
2192 // Show files used if the user requests it.
2195 printf("Files used:\n");
2196 struct OFILE * filePtr = olist;
2198 while (filePtr != NULL)
2200 if (filePtr->o_flags & O_USED)
2202 printf(" %s%s%s\n", filePtr->o_name, (filePtr->isArchiveFile ? ":" : ""), (filePtr->isArchiveFile ? filePtr->o_arname : nullStr));
2205 filePtr = filePtr->o_next;
2214 // Extract filename from path
2216 char * PathTail(char * name)
2218 // Find last occurance of PATH_DELIMETER
2219 char * temp = strrchr(name, PATH_DELIMITER);
2221 // Return what was passed in if path delimiter was not found
2230 // Add input file to processing list
2232 int AddToProcessingList(char * ptr, char * fname, char * arname, uint8_t arFile)
2236 // First time object record allocation
2237 plist = new_ofile();
2242 // Next object record allocation
2243 plast->o_next = new_ofile();
2244 plast = plast->o_next;
2249 printf("Out of memory.\n"); // Error if memory allocation fails
2253 fname = PathTail(fname);
2254 arname = PathTail(arname);
2256 if (strlen(fname) > FNLEN - 1)
2258 // Error on excessive filename length
2259 printf("File name too long: %s (sorry!)\n", fname);
2263 if (strlen(arname) > FNLEN - 1)
2265 // Error on excessive filename length
2266 printf("AR file name too long: %s (sorry!)\n", arname);
2270 strcpy(plast->o_name, fname); // Store filename sans path
2271 strcpy(plast->o_arname, arname); // Store archive name sans path
2272 plast->o_image = ptr; // Store data pointer
2273 plast->o_flags = (arFile ? 0 : O_USED); // File is used if NOT in archive
2274 plast->o_next = NULL; // Initialise next record pointer
2275 plast->isArchiveFile = arFile; // Shamus: Temp until can sort it out
2277 return 0; // Return without errors
2282 // Process in binary include files and add them to the processing list. This
2283 // routine takes in the binary file and creates an 'object' file in memory.
2284 // Sym1/Sym2 point to the start and end of data.
2286 // Image size for include files is:
2287 // Header ....... 32 bytes
2288 // Data ......... dsize
2289 // Sym Fixups ... 2 * 12 bytes
2290 // Symbol Size .. 4 bytes (Value to include symbols and terminating null)
2291 // Symbols ...... (strlen(sym1) + 1) + (strlen(sym2) + 1)
2292 // Terminate .... 4 bytes (0x00000000)
2294 int LoadInclude(char * fname, int handle, char * sym1, char * sym2, int segment)
2298 unsigned symtype = 0;
2300 long fsize = FileSize(handle); // Get size of include file
2301 long dsize = (fsize + secalign) & ~secalign; // Align size to boundary
2302 int sym1len = strlen(sym1) + 1; // Get sym1 length + null termination
2303 int sym2len = strlen(sym2) + 1; // Get sym2 length + null termination
2304 long size = 32 + dsize + 24 + 4 + sym1len + sym2len + 4;
2306 // Use calloc so the header & fixups initialize to zero
2307 // Allocate object image memory
2308 if ((ptr = calloc(size, 1)) == NULL)
2310 printf("Out of memory while including %s\n", fname);
2315 // Read in binary data
2316 if (read(handle, ptr + 32, fsize) != fsize)
2318 printf("File read error on %s\n", fname);
2326 strcpy(obj_fname[obj_index], PathTail(fname));
2328 // Build this image's dummy header
2329 PutLong(ptr, 0x00000107); // Magic number
2333 PutLong(ptr+4, dsize); // Text size
2334 PutLong(ptr+8, 0L); // Data size
2335 symtype = 0x05000000;
2336 obj_segsize[obj_index][0] = dsize;
2337 obj_segsize[obj_index][1] = 0;
2338 obj_segsize[obj_index][2] = 0;
2342 PutLong(ptr+4, 0L); // Text size
2343 PutLong(ptr+8, dsize); // Data size
2344 symtype = 0x07000000;
2345 obj_segsize[obj_index][0] = 0;
2346 obj_segsize[obj_index][1] = dsize;
2347 obj_segsize[obj_index][2] = 0;
2350 obj_index++; // Increment object count
2352 PutLong(ptr+12, 0L); // BSS size
2353 PutLong(ptr+16, 24); // Symbol table size
2354 PutLong(ptr+20, 0L); // Entry point
2355 PutLong(ptr+24, 0L); // TEXT relocation size
2356 PutLong(ptr+28, 0L); // DATA relocation size
2358 sptr = ptr + 32 + dsize; // Set sptr to symbol table location
2360 PutLong(sptr, 4L); // String offset of symbol1
2361 PutLong(sptr+4, symtype); // Symbol type
2362 PutLong(sptr+8, 0x00000000); // Symbol has no value (START)
2363 PutLong(sptr+12, 4L + (sym2len - 1)); // String offset of symbol2
2364 PutLong(sptr+16, symtype); // Symbol type
2365 PutLong(sptr+20, dsize); // Symbol is data size (END)
2367 sptr = ptr + 32 + dsize + 24; // Set sptr to symbol table size loc
2369 PutLong(sptr, sym1len + 4L); // Size of symbol table
2371 sptr = ptr + 32 + dsize + 24 + 4; // Set sptr to symbol table location
2373 for(i=0; i<(sym1len-1); i++) // Write symbol1 to string table
2376 sptr += (sym1len - 1); // Step past symbol string
2377 *sptr = '\0'; // Terminate symbol string
2378 sptr += 1; // Step past termination
2380 for(i=0; i<(sym2len-1); i++) // Write symbol2 to string table
2383 sptr += (sym2len - 1); // Step past symbol string
2384 *sptr = '\0'; // Terminate symbol string
2385 sptr += 1; // Step past termination
2387 PutLong(sptr, 0L); // Terminating long for object file
2389 return AddToProcessingList(ptr, fname, nullStr, 0);
2394 // Takes a file name, gets in its image, puts it on plist. The image may
2395 // already be in memory: If so, the ptr arg is non-null. If so, the file is
2396 // already closed. Note that the file is already open (from DoFile()). RETURNS
2397 // a pointer to the OFILE structure for this file, so you can diddle its flags
2398 // (DoFile sets O_USED for files on the command line).
2400 int LoadObject(char * fname, int fd, char * ptr)
2404 long size = FileSize(fd);
2406 // Allocate memory for file data
2411 printf("Out of memory while processing %s\n", fname);
2416 // Read in file data
2417 if (read(fd, ptr, size) != size)
2419 printf("File read error on %s\n", fname);
2425 // SCPCD: get the name of the file instead of all pathname
2426 strcpy(obj_fname[obj_index], PathTail(fname));
2427 obj_segsize[obj_index][0] = (GetLong(ptr + 4) + secalign) & ~secalign;
2428 obj_segsize[obj_index][1] = (GetLong(ptr + 8) + secalign) & ~secalign;
2429 obj_segsize[obj_index][2] = (GetLong(ptr + 12) + secalign) & ~secalign;
2432 close(fd); // Close file
2435 // Now add this image to the list of pending ofiles (plist)
2436 // This routine is shared by LoadInclude after it builds the image
2437 return AddToProcessingList(ptr, fname, nullStr, 0);
2442 // What it says on the tin: check for a .o suffix on the passed in string
2444 uint8_t HasDotOSuffix(char * s)
2446 char * temp = strrchr(s, '.');
2448 if ((temp == NULL) || (strncmp(temp, ".o", 2) != 0))
2456 // Process an ar archive file (*.a)
2458 int LoadArchive(char * fname, int fd)
2460 // Read in the archive file to memory and process
2461 long size = FileSize(fd);
2462 char * ptr = malloc(size);
2463 char * endPtr = ptr + size;
2464 char * longFilenames = NULL;
2468 printf("Out of memory while processing %s\n", fname);
2473 if (read(fd, ptr, size) != size)
2475 printf("File read error on %s\n", fname);
2483 // Save the pointer for later...
2484 arPtr[arIndex++] = ptr;
2485 char objName[FNLEN];
2488 //printf("\nProcessing AR file \"%s\"...\n", fname);
2491 // Loop through all objects in the archive and process them
2494 memset(objName, 0, 17);
2499 // if ((ptr[i] == '/') || (ptr[i] == ' '))
2500 if ((ptr[i] == ' ') && (i != 0))
2506 objName[i] = ptr[i];
2511 if (ptr[48 + i] == ' ')
2517 objSize[i] = ptr[48 + i];
2520 // Check to see if a long filename was requested
2521 if (objName[0] == 0x20)
2523 uint32_t fnSize = atoi(objName + 1);
2525 if (longFilenames != NULL)
2528 char * currentFilename = longFilenames + fnSize;
2530 while (*currentFilename != 0x0A)
2531 objName[i++] = *currentFilename++;
2537 if ((strncmp(objName, "ARFILENAMES/", 12) == 0) || (strncmp(objName, "//", 2) == 0))
2539 longFilenames = ptr + 60;
2541 else if (HasDotOSuffix(objName))
2544 // Strip off any trailing forward slash at end of object name
2545 int lastChar = strlen(objName) - 1;
2547 if (objName[lastChar] == '/')
2548 objName[lastChar] = 0;
2550 //printf("Processing object \"%s\" (size == %i, obj_index == %i)...\n", objName, atoi(objSize), obj_index);
2551 strcpy(obj_fname[obj_index], objName);
2552 obj_segsize[obj_index][0] = (GetLong(ptr + 60 + 4) + secalign) & ~secalign;
2553 obj_segsize[obj_index][1] = (GetLong(ptr + 60 + 8) + secalign) & ~secalign;
2554 obj_segsize[obj_index][2] = (GetLong(ptr + 60 + 12) + secalign) & ~secalign;
2557 if (AddToProcessingList(ptr + 60, objName, fname, 1))
2561 uint32_t size = atoi(objSize);
2562 size += (size & 0x01 ? 1 : 0);
2565 while (ptr < endPtr);
2572 // Process files (*.o, *.a) passed in on the command line
2574 int ProcessFiles(void)
2577 char magic[8]; // Magic header number (4 bytes for *.o, 8 for *.a)
2579 // Process all file handles
2580 for(i=0; i<(int)hd; i++)
2582 // Verbose mode information
2584 printf("Read file %s%s\n", name[i], (hflag[i] ? " (include)" : ""));
2588 // Attempt to read file magic number (OBJECT/ARCHIVE FILES)
2589 if (read(handle[i], magic, 8) != 8)
2591 printf("Error reading file %s\n", name[i]);
2596 lseek(handle[i], 0L, 0); // Reset to start of input file
2598 // Look for RMAC/MAC/GCC (a.out) object files
2599 if ((GetLong(magic) & 0xFFFF) == 0x0107)
2601 // Process input object file
2602 if (LoadObject(name[i], handle[i], 0L))
2605 // Otherwise, look for an object archive file
2606 else if (strncmp(magic, "!<arch>\x0A", 8) == 0)
2608 if (LoadArchive(name[i], handle[i]))
2613 // Close file and error
2614 printf("%s is not a supported object or archive file\n", name[i]);
2615 printf("Magic == [%02X][%02X][%02X][%02X]\n", magic[0], magic[1], magic[2], magic[3]);
2623 // If hflag[i] is 1, include this in the data segment; if 2, put it
2625 if (LoadInclude(name[i], handle[i], hsym1[i], hsym2[i], hflag[i] - 1))
2630 // Free include, symbol & object handles
2631 for(i=0; i<(int)hd; i++)
2642 // Reset next handle indicator
2649 // Load newargv with pointers to arguments found in the buffer
2651 int parse(char * buf, char * newargv[])
2656 printf("begin parsing\n");
2660 while (*buf && strchr(",\t\n\r\14 ", *buf))
2664 if (*buf == '\0' || *buf == 26)
2668 printf("No commands in command file\n");
2677 /* test for comment */
2680 /* found a comment; skip to next \n and start over */
2681 while (*buf && *buf != '\n')
2689 printf("Too many arguments in command file\n");
2695 while (!strchr(",\t\n\r\14 ", *buf))
2697 if (*buf == '\0' || *buf == 26)
2699 printf("Finished parsing %d args\n", i);
2709 printf("argv[%d] = \"%s\"\n", i, newargv[i]);
2717 // Process in a link command file
2719 int docmdfile(char * fname)
2721 int fd; // File descriptor
2722 unsigned size; // Command file size
2723 char * ptr; // Pointer
2724 int newargc; // New argument count
2725 char * (*newargv)[]; // New argument value array
2727 // Verbose information
2729 printf("docmdfile(%s)\n", fname);
2731 // Allocate memory for new argument values
2732 newargv = malloc((long)(sizeof(char *) * MAXARGS));
2736 printf("Out of memory.\n");
2740 // Attempt to open and read in the command file
2743 if ((fd = open(fname, _OPEN_FLAGS)) < 0)
2745 printf("Cannot open command file %s.\n", fname);
2749 size = FileSize(fd);
2751 if ((ptr = malloc(size + 1)) == NULL)
2753 printf("Out of memory.\n");
2758 if (read(fd, ptr, size) != (int)size)
2760 printf("Read error on command file %s.\n", fname);
2765 *(ptr + size) = 0; // Null terminate the buffer
2770 printf("No command filename specified\n");
2774 // Parse the command file
2775 if ((newargc = parse(ptr, *newargv)) == -1)
2780 // Process the inputted flags
2781 if (doargs(newargc, *newargv))
2783 printf("docmdfile: doargs returns TRUE\n");
2795 // Take an argument list and parse the command line
2797 int doargs(int argc, char * argv[])
2799 int i = 1; // Iterator
2800 int c; // Command line character
2801 char * ifile, * isym; // File name and symbol name for -i
2803 // Parse through option switches & files
2806 // Process command line switches
2807 if (argv[i][0] == '-')
2811 printf("Illegal option argument: %s\n\n", argv[i]);
2816 c = argv[i++][1]; // Get next character in command line
2818 // Process command line switch
2821 case '?': // Display usage information
2828 case 'A': // Set absolute linking on
2834 printf("Not enough arguments to -a\n");
2838 aflag = 1; // Set abs link flag
2840 // Segment order is TEXT, DATA, BSS
2841 // Text segment can be 'r' or a value
2842 if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
2844 ttype = -1; // TEXT segment is relocatable
2846 else if ((*argv[i] == 'x' || *argv[i] == 'X'))
2848 printf("Error in text-segment address: cannot be contiguous\n");
2851 else if (GetHexValue(argv[i], &tval))
2853 printf("Error in text-segment address: %s is not 'r' or an address.", argv[i]);
2859 // Data segment can be 'r', 'x' or a value
2860 if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
2862 dtype = -1; // DATA segment is relocatable
2864 else if ((*argv[i] == 'x' || *argv[i] == 'X'))
2866 dtype = -2; // DATA follows TEXT
2868 else if (GetHexValue(argv[i], &dval))
2870 printf("Error in data-segment address: %s is not 'r', 'x' or an address.", argv[i]);
2876 // BSS segment can be 'r', 'x' or a value
2877 if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
2879 btype = -1; // BSS segment is relocatable
2881 else if ((*argv[i] == 'x' || *argv[i] == 'X'))
2883 btype = -3; // BSS follows DATA
2885 else if (GetHexValue(argv[i], &bval))
2887 printf("Error in bss-segment address: %s is not 'r', 'x[td]', or an address.", argv[i]);
2894 case 'B': // Don't remove muliply defined locals
2901 case 'C': // Process a command file
2904 printf("Not enough arguments to -c\n");
2908 if (docmdfile(argv[i++]))
2915 case 'D': // Wait for "return" before exiting
2923 case 'E': // Output COFF (absolute only)
2927 case 'G': // Output source level debugging
2928 printf("\'g\' flag not currently implemented\n");
2931 if (gflag) warn('g', 1);
2936 case 'I': // Include binary file
2939 printf("Not enough arguments to -i\n");
2946 // handle -ii (No truncation)
2947 if ((argv[i-3][2] == 'i') || (argv[i-3][2] == 'I'))
2950 printf("warning: (-ii) COFF format output not specified\n");
2952 // handle -i (Truncation)
2955 if (strlen(isym) > 7)
2959 // Place include files in the DATA segment only
2960 if (DoFile(ifile, DSTSEG_D, isym))
2965 case 'L': // Add local symbols
2972 case 'M': // Produce load symbol map
2979 case 'N': // Output no header to .abs file
2986 case 'O': // Specify an output file
2994 printf("No output filename following -o switch\n");
2998 if (strlen(argv[i]) > FARGSIZE - 5)
3000 printf("Output file name too long (sorry!)\n");
3004 strcpy(ofile, argv[i++]);
3007 case 'R': // Section alignment size
3013 switch (argv[i-1][2])
3015 case 'w': case 'W': secalign = 1; break; // Word alignment
3016 case 'l': case 'L': secalign = 3; break; // Long alignment
3017 case 'p': case 'P': secalign = 7; break; // Phrase alignment
3018 case 'd': case 'D': secalign = 15; break; // Double phrase alignment
3019 case 'q': case 'Q': secalign = 31; break; // Quad phrase alignment
3020 default: secalign = 7; break; // Default phrase alignment
3025 case 'S': // Output only global symbols
3032 case 'U': // Undefined symbols
3036 case 'V': // Verbose information
3037 if (!vflag && !versflag)
3045 case 'W': // Show warnings flag
3052 case 'Z': // Suppress banner flag
3059 printf("unknown option argument `%c'\n", c);
3065 // Not a switch, then process as a file
3066 if (DoFile(argv[i++], 0, NULL))
3071 if (!oflag && vflag)
3073 strcpy(ofile, "output");
3074 printf("Output file is %s[.ext]\n", ofile);
3078 printf("Output file is %s\n", ofile);
3083 // No problems encountered
3089 // Display version information
3091 void ShowVersion(void)
3093 if (displaybanner)// && vflag)
3095 printf("\nReboot's Linker for Atari Jaguar\n");
3096 printf("Copyright (c) 199x Allan K. Pratt, 2014 Reboot\n");
3097 printf("V%i.%i.%i %s (%s)\n\n", MAJOR, MINOR, PATCH, __DATE__, PLATFORM);
3103 // Display command line help
3108 printf(" %s [-options] file(s)\n", cmdlnexec);
3110 printf("Options:\n");
3111 printf(" -? or -h display usage information\n");
3112 printf(" -a <text> <data> <bss> output absolute file\n");
3113 printf(" hex value: segment address\n");
3114 printf(" r: relocatable segment\n");
3115 printf(" x: contiguous segment\n");
3116 printf(" -b don't remove multiply defined local labels\n");
3117 printf(" -c <fname> add contents of <fname> to command line\n");
3118 printf(" -d wait for key after link\n");
3119 printf(" -e output COF absolute file\n");
3120 printf(" -g output source-level debugging\n");
3121 printf(" -i <fname> <label> incbin <fname> and set <label>\n");
3122 printf(" -l add local symbols\n");
3123 printf(" -m produce load symbols map\n");
3124 printf(" -n output no file header to .abs file\n");
3125 printf(" -o <fname> set output name\n");
3126 printf(" -r<size> section alignment size\n");
3127 printf(" w: word (2 bytes)\n");
3128 printf(" l: long (4 bytes)\n");
3129 printf(" p: phrase (8 bytes, default alignment)\n");
3130 printf(" d: double phrase (16 bytes)\n");
3131 printf(" q: quad phrase (32 bytes)\n");
3132 printf(" -s output only global symbols\n");
3133 printf(" -u allow unresolved symbols (experimental)\n");
3134 printf(" -v set verbose mode\n");
3135 printf(" -w show linker warnings\n");
3136 printf(" -z suppress banner\n");
3144 void ExitLinker(void)
3149 // Display link status if verbose mode
3151 printf("Link %s.\n", errflag ? "aborted" : "complete");
3153 // Wait for return key if requested
3156 printf("\nPress the [RETURN] key to continue. ");
3157 c = fgets(tempbuf, 128, stdin);
3164 int main(int argc, char * argv[])
3166 char * s = NULL; // String pointer for "getenv"
3167 struct HREC * utemp; // Temporary hash record pointer
3168 struct OHEADER * header; // Pointer to output header structure
3170 cmdlnexec = argv[0]; // Obtain executable name
3171 s = getenv("RLNPATH");
3173 if (s) // Attempt to obtain env variable
3174 strcpy(libdir, s); // Store it if found
3176 // Initialize some vars
3177 tval = dval = bval = 0;
3178 ttype = dtype = btype = 0;
3180 // Parse the command line
3181 if (doargs(argc, argv))
3187 if (!zflag && !vflag)
3189 ShowVersion(); // Display version information
3190 versflag = 1; // We've dumped the version banner
3193 // Load in specified files/objects and add to processing list
3200 // Work in items in processing list & deal with unresolved list
3207 // Check that there is something to link
3214 // Report unresolved externals
3215 if (unresolved != NULL)
3217 printf("UNRESOLVED SYMBOLS\n");
3219 // Don't list them if two -u's or more
3224 while (utemp != NULL)
3226 printf("\t%s (", utemp->h_sym);
3227 WriteARName(utemp->h_ofile);
3229 utemp = utemp->h_next;
3240 // Make one output file from input objs
3241 header = MakeOutputFile();
3252 printf("TO DO:Partial linking\n");
3255 // Relocatable linking
3258 printf("TO DO:Relocatable linking\n");
3266 printf("Absolute linking ");
3275 printf("Header magic is 0x%04X\n", (unsigned int)header->magic);
3277 if (WriteOutputFile(header))
3281 // Display the loaded symbols map
3283 if (ShowSymbolLoadMap(header))
3286 // Display segment size summary
3290 printf("+---------+----------+----------+----------+\n");
3291 printf("| Segment | TEXT | DATA | BSS |\n");
3292 printf("| Sizes |----------+----------+----------|\n");
3293 printf("| (Hex) | %8X | %8X | %8X |\n", (unsigned int)header->tsize, (unsigned int)header->dsize, (unsigned int)header->bsize);
3294 printf("+---------+----------+----------+----------+\n\n");