2 // RLN - Renamed Linker for the Atari Jaguar console system
3 // Copyright (C) 199x, Allan K. Pratt, 2014-2021 Reboot & Friends
9 unsigned errflag = 0; // Error flag, goes TRUE on error
10 unsigned waitflag = 0; // Wait for any keypress flag
11 unsigned versflag = 0; // Version banner has been shown flag
12 unsigned aflag = 0; // Absolute linking flag
13 unsigned bflag = 0; // Don't remove mulitply def locals flag
14 unsigned cflag = 0; // COF executable
15 unsigned dflag = 0; // Wait for key after link flag
16 unsigned gflag = 0; // Source level debug include flag
17 unsigned lflag = 0; // Add local symbols to output flag
18 unsigned mflag = 0; // Produce symbol load map flag
19 unsigned oflag = 0; // Output filename specified
20 unsigned rflag = 0; // Segment alignment size flag
21 unsigned sflag = 0; // Output only global symbols
22 unsigned vflag = 0; // Verbose flag
23 unsigned wflag = 0; // Show warnings flag
24 unsigned zflag = 0; // Suppress banner flag
25 unsigned pflag = 0, uflag = 0; // Unimplemented flags (partial link, don't abort on unresolved symbols)
26 unsigned hd = 0; // Index of next file handle to fill
27 unsigned secalign = 7; // Section Alignment (8=phrase)
28 unsigned tbase = 0; // TEXT base address
29 unsigned dbase = 0; // DATA base address
30 unsigned bbase = 0; // BSS base address
31 unsigned textoffset = 0; // COF TEXT segment offset
32 unsigned dataoffset = 0; // COF DATA segment offset
33 unsigned bssoffset = 0; // COF BSS segment offset
34 unsigned displaybanner = 1; // Display version banner
35 unsigned symoffset = 0; // Symbol table offset in output file
36 unsigned dbgsymbase = 0; // Debug symbol base address
37 int noheaderflag = 0; // No header flag for ABS files
38 int hflags; // Value of the arg to -h option
39 int ttype, dtype, btype; // Type flag: 0, -1, -2, -3, -4
40 int tval, dval, bval; // Values of these abs bases
41 int hflag[NHANDLES]; // True for include files
42 int handle[NHANDLES]; // Open file handles
43 int textsize, datasize, bsssize; // Cumulative segment sizes
44 char libdir[FARGSIZE * 3]; // Library directory to search
45 char ofile[FARGSIZE]; // Output file name (.o)
46 char * name[NHANDLES]; // Associated file names
47 char * cmdlnexec = NULL; // Executable name - pointer to ARGV[0]
48 char * hsym1[SYMLEN]; // First symbol for include files
49 char * hsym2[SYMLEN]; // Second symbol for include files
50 struct OFILE * plist = NULL; // Object image list pointer
51 struct OFILE * plast; // Last object image list pointer
52 struct OFILE * olist = NULL; // Pointer to first object file in list
53 struct OFILE * olast; // Pointer to last object file in list
56 struct HREC * htable[NBUCKETS]; // Hash table
57 struct HREC * unresolved = NULL; // Pointer to unresolved hash list
58 char * ost; // Output symbol table
59 char * ost_ptr; // Output symbol table; current pointer
60 char * ost_end; // Output symbol table; end pointer
61 char * oststr; // Output string table
62 char * oststr_ptr; // Output string table; current pointer
63 char * oststr_end; // Output string table; end pointer
64 int ost_index = 0; // Index of next ost addition
65 uint8_t nullStr[1] = "\x00"; // Empty string
66 struct HREC * arSymbol = NULL; // Pointer to AR symbol table
69 // Function prototypes
70 struct HREC * LookupHREC(char *);
71 char * PathTail(char *);
73 void ShowVersion(void);
74 int OSTLookup(char * sym);
75 int OSTAdd(char * name, int type, long value);
76 int ProcessFiles(void);
77 int doargs(int argc, char * argv[]);
81 // Get a long word from memory
83 static inline uint32_t GetLong(uint8_t * src)
85 return (src[0] << 24) | (src[1] << 16) | (src[2] << 8) | src[3];
90 // Put a long word into memory
92 static inline void PutLong(uint8_t * dest, uint32_t val)
94 *dest++ = (uint8_t)(val >> 24);
95 *dest++ = (uint8_t)(val >> 16);
96 *dest++ = (uint8_t)(val >> 8);
102 // Get a word from memory
104 static inline uint16_t GetWord(uint8_t * src)
106 return (src[0] << 8) | src[1];
111 // Put a word into memory
113 static inline void PutWord(uint8_t * dest, uint16_t val)
115 *dest++ = (uint8_t)(val >> 8);
116 *dest = (uint8_t)val;
121 // Find passed in file's length in bytes
122 // N.B.: This also resets the file's pointer to the start of the file
124 long FileSize(int fd)
126 long size = lseek(fd, 0, SEEK_END);
127 lseek(fd, 0, SEEK_SET);
134 // For this object file, add symbols to the output symbol table after
135 // relocating them. Returns TRUE if OSTLookup returns an error (-1).
137 int DoSymbols(struct OFILE * ofile)
144 uint32_t tsoSave, dsoSave, bsoSave;
146 // Point to first symbol record in the object file
147 char * symptr = (ofile->o_image + 32
148 + ofile->o_header.tsize
149 + ofile->o_header.dsize
150 + ofile->o_header.absrel.reloc.tsize
151 + ofile->o_header.absrel.reloc.dsize);
153 // Point to end of symbol record in the object file
154 char * symend = symptr + ofile->o_header.ssize;
156 uint32_t tsegoffset = ofile->segBase[TEXT];
157 uint32_t dsegoffset = ofile->segBase[DATA];
158 uint32_t bsegoffset = ofile->segBase[BSS];
160 // Save segment vars, so we can restore them if needed
161 tsoSave = tsegoffset, dsoSave = dsegoffset, bsoSave = bsegoffset;
163 // Process each record in the object's symbol table
164 for(; symptr!=symend; symptr+=12)
166 index = GetLong(symptr + 0); // Obtain symbol string index
167 type = GetLong(symptr + 4); // Obtain symbol type
168 value = GetLong(symptr + 8); // Obtain symbol value
170 // Global/External symbols have a pre-processing stage
171 // N.B.: This destroys the t/d/bsegoffset discovered above. So if a
172 // local symbol follows a global/exported one, it gets wrong
173 // info! [Should be FIXED now]
174 if (type & 0x01000000)
176 // Obtain the string table index for the relocation symbol, look
177 // for it in the globals hash table to obtain information on that
179 hptr = LookupHREC(symend + index);
183 // Try to find it in the OST
184 int ostIndex = OSTLookup(symend + index);
188 printf("DoSymbols(): Symbol not found in hash table: '%s' (%s)\n", symend + index, ofile->o_name);
193 printf("DoSymbols(): Skipping symbol '%s' (%s) found in OST...\n", symend + index, ofile->o_name);
195 // If the symbol is not in any .a or .o units, it must be one
196 // of the injected ones (_TEXT_E, _DATA_E, or _BSS_E), so skip
197 // it [or maybe not? In verbose mode, we see nothing...!]
201 tsegoffset = hptr->h_ofile->segBase[TEXT];
202 dsegoffset = hptr->h_ofile->segBase[DATA];
203 bsegoffset = hptr->h_ofile->segBase[BSS];
205 // Update type with global type
208 // Remove global flag if absolute
209 if (type == (T_GLBL | T_ABS))
212 // If the global/external has a value then update that value in
213 // accordance with the segment sizes of the object file it
217 switch (hptr->h_type & 0x0E000000)
221 value = hptr->h_value;
224 value = hptr->h_value - hptr->h_ofile->o_header.tsize;
227 value = hptr->h_value
228 - (hptr->h_ofile->o_header.tsize
229 + hptr->h_ofile->o_header.dsize);
233 printf("DoSymbols: No adjustment made for symbol: %s (%s) = %X\n", symend + index, ofile->o_name, hptr->h_value);
237 // If *not* a global/external, use the info from passed in object
239 tsegoffset = tsoSave, dsegoffset = dsoSave, bsegoffset = bsoSave;
241 // Process and update the value dependent on whether the symbol is a
242 // debug symbol or not
243 // N.B.: Debug symbols are currently not supported
244 if (type & 0xF0000000)
247 // Set the correct debug symbol base address (TEXT segment)
251 for(j=0; (unsigned)j<dosymi; j++)
252 dbgsymbase += obj_segsize[j][0];
254 dbgsymbase = ofile->segBase[TEXT];
257 switch (type & 0xFF000000)
260 value = tval + dbgsymbase;
265 value = tval + dbgsymbase + value;
270 PutLong(symptr + 8, value);
275 // Now make modifications to the symbol value, local or global,
276 // based on the segment sizes of the object file currently being
278 switch (type & T_SEG)
283 value = tbase + tsegoffset + value;
284 PutLong(symptr + 8, value);
288 value = dbase + dsegoffset + value;
290 value = dbase + dsegoffset + (value
291 - ofile->o_header.tsize);
293 PutLong(symptr + 8, value);
297 value = bbase + bsegoffset + value;
299 value = bbase + bsegoffset
300 + (value - (ofile->o_header.tsize
301 + ofile->o_header.dsize));
303 PutLong(symptr + 8, value);
310 // Add to output symbol table if global/extern, or local flag is set
311 if (isglobal(type) || lflag)
314 printf("DoSymbols: Adding symbol: %s (%s) to OST...\n", symend + index, ofile->o_name);
316 index = OSTAdd(symend + index, type, value);
320 printf("DoSymbols(): Failed to add symbol '%s' to OST!\n", symend + index);
331 // Free up hash memory
333 void FreeHashes(void)
337 for(i=0; i<NBUCKETS; i++)
339 struct HREC * hptr = htable[i];
343 struct HREC * htemp = hptr->h_next;
352 // Add all global and external symbols to the output symbol table
353 // [This is confusing--is it adding globals or locals? common == local!
354 // but then again, we see this in the header:
355 // #define T_COMMON (T_GLOBAL | T_EXTERN) but that could be just bullshit.]
357 // Common symbols have a different number in the "value" field of the symbol
358 // table (!0) than purely external symbols do (0). So you have to look at the
359 // type (T_GLBL) *and* the value to determine if it's a common symbol.
366 for(i=0; i<NBUCKETS; i++)
368 for(hptr=htable[i]; hptr!=NULL; hptr=hptr->h_next)
370 //NO! if (iscommon(hptr->h_type))
371 if (isglobal(hptr->h_type))// || isextern(hptr->h_type))
373 // Skip if in *.a file... (does nothing)
374 //if (hptr->h_ofile->isArchiveFile)
377 //Is this true? Couldn't an absolute be exported???
378 if (hptr->h_type == (T_GLBL | T_ABS))
379 hptr->h_type = T_ABS; // Absolutes *can't* be externals
381 if (OSTAdd(hptr->h_sym, hptr->h_type, hptr->h_value) == -1)
392 // Add a symbol's name, type, and value to the OST.
393 // Returns the index of the symbol in OST, or -1 for error.
395 int OSTAdd(char * name, int type, long value)
397 int ost_offset_p, ost_offset_e = 0; // OST table offsets for position calcs
398 int ostresult; // OST index result
399 int slen = strlen(name);
401 // If the OST or OST string table has not been initialised then do so
404 ost = malloc(OST_BLOCK);
405 oststr = malloc(OST_BLOCK);
409 printf("OST memory allocation error.\n");
415 printf("OSTSTR memory allocation error.\n");
419 ost_ptr = ost; // Set OST start pointer
420 ost_end = ost + OST_BLOCK; // Set OST end pointer
422 PutLong(oststr, 0x00000004); // Just null long for now
423 oststr_ptr = oststr + 4; // Skip size of str table long (incl null long)
424 PutLong(oststr_ptr, 0x00000000); // Null terminating long
425 oststr_end = oststr + OST_BLOCK;
429 // If next symbol record exceeds current allocation then expand symbol
430 // table and/or symbol string table.
431 ost_offset_p = (ost_ptr - ost);
432 ost_offset_e = (ost_end - ost);
434 // 3 x uint32_t (12 bytes)
435 if ((ost_ptr + 12) > ost_end)
437 // We want to allocate the current size of the OST + another block.
438 ost = realloc(ost, ost_offset_e + OST_BLOCK);
442 printf("OST memory reallocation error.\n");
446 ost_ptr = ost + ost_offset_p;
447 ost_end = (ost + ost_offset_e) + OST_BLOCK;
450 ost_offset_p = (oststr_ptr - oststr);
451 ost_offset_e = (oststr_end - oststr);
453 // string length + terminating NULL + uint32_t (terminal long)
454 if ((oststr_ptr + (slen + 1 + 4)) > oststr_end)
456 oststr = realloc(oststr, ost_offset_e + OST_BLOCK);
460 printf("OSTSTR memory reallocation error.\n");
464 oststr_ptr = oststr + ost_offset_p;
465 oststr_end = (oststr + ost_offset_e) + OST_BLOCK;
469 // If this is a debug symbol and the include debug symbol flag (-g) is not
470 // set then do nothing
471 if ((type & 0xF0000000) && !gflag)
477 // Get symbol index in OST, if any (-1 if not found)
478 ostresult = OSTLookup(name);
480 // If the symbol is in the output symbol table and the bflag is set
481 // (don't remove multiply defined locals) and this is not an
482 // external/global symbol *** OR *** the symbol is not in the output
483 // symbol table then add it.
484 if (((ostresult != -1) && bflag && !(type & 0x01000000))
485 || ((ostresult != -1) && gflag && (type & 0xF0000000))
486 || (ostresult == -1))
488 if ((type & 0xF0000000) == 0x40000000)
489 PutLong(ost_ptr, 0x00000000); // Zero string table offset for dbg line
491 PutLong(ost_ptr, (oststr_ptr - oststr)); // String table offset of symbol string
493 PutLong(ost_ptr + 4, type);
494 PutLong(ost_ptr + 8, value);
497 // If the symbol type is anything but a debug line information
498 // symbol then write the symbol string to the string table
499 if ((type & 0xF0000000) != 0x40000000)
501 strcpy(oststr_ptr, name); // Put symbol name in string table
502 *(oststr_ptr + slen) = '\0'; // Add null terminating character
503 oststr_ptr += (slen + 1);
504 PutLong(oststr_ptr, 0x00000000); // Null terminating long
505 PutLong(oststr, (oststr_ptr - oststr)); // Update size of string table
509 printf("OSTAdd: (%s), type=$%08X, val=$%08lX\n", name, type, value);
511 // is ost_index pointing one past?
512 // does this return the same regardless of if its ++n or n++?
513 // no. it returns the value of ost_index *before* it's incremented.
522 // Return the index of a symbol in the output symbol table
523 // N.B.: This is a 1-based index! (though there's no real reason for it to be)
525 int OSTLookup(char * sym)
528 int stro = 4; // Offset in string table
530 for(i=0; i<ost_index; i++)
532 if (strcmp(oststr + stro, sym) == 0)
535 stro += strlen(oststr + stro) + 1;
543 // Add unresolved externs to the output symbol table
544 // N.B.: Only adds unresolved symbols *if* they're not already in the OST
546 int DoUnresolved(void)
548 struct HREC * hptr = unresolved;
550 // Add to OST while unresolved list is valid
553 if (OSTAdd(hptr->h_sym, T_GLBL, 0L) == -1)
557 printf("DoUnresolved(): '%s' (%s:$%08X) in OST\n", hptr->h_sym, hptr->h_ofile->o_name, hptr->h_type);
559 struct HREC * htemp = hptr->h_next;
570 // Update object file TEXT and DATA segments based on relocation records. Take
571 // in an OFILE header and flag (T_TEXT, T_DATA) to process. Return (0) is
572 // successful or non-zero (1) if failed.
574 int RelocateSegment(struct OFILE * ofile, int flag)
576 char * symtab; // Start of symbol table
577 char * symbols; // Start of symbols
578 char * sptr; // Start of segment data
579 char * rptr; // Start of segment relocation records
580 unsigned symidx; // Offset to symbol
581 unsigned addr; // Relocation address
582 unsigned rflg; // Relocation flags
583 unsigned olddata; // Old segment data at reloc address
584 unsigned newdata = 0; // New segment data at reloc address
585 unsigned pad; // Temporary to calculate phrase padding
587 char sym[SYMLEN]; // String for symbol name/hash search
588 int ssidx; // Segment size table index
589 unsigned glblreloc; // Global relocation flag
590 unsigned absreloc; // Absolute relocation flag
591 unsigned relreloc; // Relative relocation flag
592 unsigned wordreloc; // Relocate word only flag
593 unsigned opreloc; // Relocate OP data address only flag
594 unsigned swcond; // Switch statement condition
595 unsigned relocsize; // Relocation record size
596 unsigned saveBits; // OP data leftover bits save
599 // If there is no TEXT relocation data for the selected object file segment
600 // then update the COF TEXT segment offset allowing for the phrase padding
601 if ((flag == T_TEXT) && !ofile->o_header.absrel.reloc.tsize)
603 // SCPCD : we should not increment the textoffset before the end of processing the object file, else data section will point to wrong textoffset
607 // If there is no DATA relocation data for the selected object file segment
608 // then update the COF DATA and BSS segment offsets allowing for the phrase
610 if ((flag == T_DATA) && !ofile->o_header.absrel.reloc.dsize)
612 // SCPCD : the T_DATA is the last section of the file, we can now increment the textoffset, dataoffset and bssoffset
614 // TEXT segment size plus padding
615 pad = ((ofile->o_header.tsize + secalign) & ~secalign);
616 textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize));
619 printf("RelocateSegment(%s, TEXT) : No relocation data\n", ofile->o_name);
621 // DATA segment size plus padding
622 pad = ((ofile->o_header.dsize + secalign) & ~secalign);
623 dataoffset += (ofile->o_header.dsize + (pad - ofile->o_header.dsize));
625 // BSS segment size plus padding
626 pad = ((ofile->o_header.bsize + secalign) & ~secalign);
627 bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize));
630 printf("RelocateSegment(%s, DATA) : No relocation data\n", ofile->o_name);
636 printf("RelocateSegment(%s, %s) : Processing Relocation Data\n",
637 ofile->o_name, flag == T_DATA ? "DATA" : "TEXT");
639 // Obtain pointer to start of symbol table
640 symtab = (ofile->o_image + 32 + ofile->o_header.tsize
641 + ofile->o_header.dsize
642 + ofile->o_header.absrel.reloc.tsize
643 + ofile->o_header.absrel.reloc.dsize);
645 // Obtain pointer to start of symbols
646 symbols = symtab + ofile->o_header.ssize;
648 // Obtain pointer to start of TEXT segment
649 sptr = ofile->o_image + 32;
651 // Obtain pointer to start of TEXT relocation records
652 rptr = sptr + (ofile->o_header.tsize + ofile->o_header.dsize);
654 relocsize = ofile->o_header.absrel.reloc.tsize;
657 printf("RELOCSIZE :: %d Records = %d\n", relocsize, relocsize / 8);
659 // Update pointers if DATA relocation records are being processed
662 sptr += ofile->o_header.tsize; // Start of DATA segment
663 rptr += ofile->o_header.absrel.reloc.tsize; // Start of DATA relocation records
664 relocsize = ofile->o_header.absrel.reloc.dsize;
667 // Process each relocation record for the TEXT segment
668 for(i=0; i<(int)relocsize; i+=8)
670 // Obtain both the relocation address and the relocation flags from the
672 addr = GetLong(rptr);
673 rflg = GetLong(rptr + 4);
674 glblreloc = (rflg & 0x00000010 ? 1 : 0);// Set global relocation flag
675 absreloc = (rflg & 0x00000040 ? 1 : 0); // Set absolute relocation flag
676 relreloc = (rflg & 0x000000A0 ? 1 : 0); // Set relative relocation flag
677 wordreloc = (rflg & 0x00000002 ? 1 : 0); // Set word relocation flag
678 opreloc = (rflg & 0x00000004 ? 1 : 0); // Set OP relocation flag
680 // Additional processing required for global relocations
683 // Obtain the string table index for the relocation symbol, look
684 // for it in the globals hash table to obtain information on that
685 // symbol. For the hash calculation to work correctly it must be
686 // placed in a 'clean' string before looking it up.
687 symidx = GetLong(symtab + ((rflg >> 8) * 12));
688 memset(sym, 0, SYMLEN);
689 strcpy(sym, symbols + symidx);
690 olddata = newdata = 0; // Initialise old and new segment data
691 ssidx = OSTLookup(sym);
692 newdata = GetLong(ost + ((ssidx - 1) * 12) + 8);
695 // Obtain the existing long word (or word) segment data and flip words
696 // if the relocation flags indicate it relates to a RISC MOVEI
698 olddata = (wordreloc ? GetWord(sptr + addr) : GetLong(sptr + addr));
700 // If it's a OP QUAD relocation, get the data out of the DATA bits.
701 // Note that because we can't afford to lose the bottom 3 bits of the
702 // relocation record, we lose 3 off the top--which means the maximum
703 // this can store is $1FFFF8 (vs. $FFFFF8).
706 saveBits2 = (GetLong(sptr + addr + 8) & 0xE0000000) >> 8; // Upper 3 of data addr
707 saveBits = olddata & 0x7FF;
708 olddata = (olddata & 0xFFFFF800) >> 11;
709 olddata |= saveBits2; // Restore upper 3 bits of data addr
713 olddata = _SWAPWORD(olddata);
715 // Process record dependant on segment it relates to; TEXT, DATA or
716 // BSS. Construct a new relocated segment long word based on the
717 // required segment base address, the segment data offset in the
718 // resulting COF file and the offsets from the incoming object file.
719 swcond = (rflg & 0xFFFFFF00);
725 case 0x00000200: // Absolute Value
727 case 0x00000400: // TEXT segment relocation record
728 // SCPCD : the symbol point to a text segment, we should use the textoffset
729 newdata = tbase + textoffset + olddata;
732 case 0x00000600: // DATA segment relocation record
733 newdata = dbase + dataoffset
734 + (olddata - ofile->o_header.tsize);
737 case 0x00000800: // BSS segment relocation record
738 newdata = bbase + bssoffset
739 + (olddata - (ofile->o_header.tsize
740 + ofile->o_header.dsize));
751 // Set absolute (long) or relative (word) address of symbol
754 // Flip the new long word segment data if the relocation record
755 // indicated a RISC MOVEI instruction and place the resulting data
756 // back in the COF segment
758 newdata = _SWAPWORD(newdata);
761 PutWord(sptr + addr, newdata);
765 printf("OP reloc: oldata=$%X, newdata=$%X\n", olddata, newdata);
767 newdata = ((newdata & 0x00FFFFF8) << 8) | saveBits;
768 PutLong(sptr + addr, newdata);
769 // Strip out extraneous data hitchhikers from 2nd phrase...
770 newdata = GetLong(sptr + addr + 8) & 0x007FFFFF;
771 PutLong(sptr + addr + 8, newdata);
774 PutLong(sptr + addr, newdata);
778 PutWord(sptr + addr, newdata - tbase - addr - ofile->o_tbase);
781 // Shamus: Let's output some info to aid in debugging this crap
788 sprintf(ssiString, " [ssi:%i]", ssidx);
790 printf("RelocateSegment($%08X): %s, $%08X: $%08X => $%08X%s\n", rflg, (glblreloc ? sym : "(LOCAL)"), addr, olddata, GetLong(sptr + addr), ssiString);
793 rptr += 8; // Point to the next relocation record
796 // Update the COF segment offset allowing for the phrase padding.
797 // SCPCD : we should not increment the textoffset before the end of processing the object file, else data section will point to wrong textoffset
800 // TEXT segment plus padding
801 pad = ((ofile->o_header.tsize + secalign) & ~secalign);
802 textoffset += (ofile->o_header.tsize + (pad - ofile->o_header.tsize));
804 // DATA segment plus padding
805 pad = ((ofile->o_header.dsize + secalign) & ~secalign);
806 dataoffset += (ofile->o_header.dsize + (pad - ofile->o_header.dsize));
808 // BSS segment plus padding
809 pad = ((ofile->o_header.bsize + secalign) & ~secalign);
810 bssoffset += (ofile->o_header.bsize + (pad - ofile->o_header.bsize));
813 // Return value, should always be zero
819 // Add a path character to the end of string 's' if it doesn't already end with
820 // one. The last occurrance of '/' or '\' in the string is assumed to be the
823 // This is fucking shit. We know what the path delimiter is, its FUCKING
824 // DEFINED IN THE FUCKING HEADER. FOR FUCKS SAKE. AND YES, HOPE TO GOD THERE'S
825 // ENOUGH SPACE IN THE PASSED IN BUFFER TO HOLD THE EXTRA CHARACTER!
827 void AppendPathDelimiter(char * s)
830 // And hope to God that there's enough space in the buffer...
835 if (*s == '/' || *s == '\\')
849 int length = strlen(s);
851 if (s[length - 1] != PATH_DELIMITER)
853 s[length] = PATH_DELIMITER;
854 s[length + 1] = 0; // BUFFER OVERFLOW!!!! FFFFFFFFUUUUUUUUUUUU
861 // Try to open "name", "name.o", "${libdir}name", "${libdir}name.o". Return the
862 // handle of the file successfully opened. p_name is updated to point to a
863 // malloc()'ed string which is the name which actually got opened. p_name will
864 // return unchanged if the file can't be found.
866 int TryOpenFile(char ** p_name)
868 char * name = *p_name;
870 // Note that libdir will be an empty string if there is none specified
871 char * tmpbuf = malloc(strlen(name) + strlen(libdir) + 3);
875 printf("TryOpenFile() : out of memory\n");
879 strcpy(tmpbuf, name);
880 int hasdot = (strrchr(tmpbuf, '.') > strrchr(tmpbuf, PATH_DELIMITER));
881 // Try to open file as passed first
882 int fd = open(tmpbuf, _OPEN_FLAGS);
889 // Try to open file with '.o' added
890 strcat(tmpbuf, ".o");
891 fd = open(tmpbuf, _OPEN_FLAGS);
897 // Try the libdir only if the name isn't already anchored
898 // Shamus: WTH, this makes no sense... Why the ':'? Is this a Macintosh??
899 // if (*name != '/' && *name != '\\' && !strchr(name, ':'))
900 if ((*name != PATH_DELIMITER) && (strchr(name, ':') == NULL))
902 strcpy(tmpbuf, libdir);
903 // Add a trailing path char if there isn't one already
904 AppendPathDelimiter(tmpbuf);
905 strcat(tmpbuf, name);
907 if ((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0)
912 strcat(tmpbuf, ".o");
914 if ((fd = open(tmpbuf, _OPEN_FLAGS)) >= 0)
919 // Couldn't open file at all
922 // There are worse things... :-P
924 tmpbuf = realloc(tmpbuf, strlen(tmpbuf) + 1);
928 printf("TryOpenFile() : out of memory\n");
938 // What it says on the tin
940 void WriteARName(struct OFILE * p)
942 int flag = *(p->o_arname);
943 printf("%s%s%s", (flag ? (char *)(p->o_arname) : ""), (flag ? ":" : ""), p->o_name);
948 // Collect file names and handles in a buffer so there is less disk activity.
949 // Call DoFile with flag FALSE for normal object files and archives.
950 // Call it with flag TRUE and a symbol name for include files (-i).
952 int DoFile(char * fname, int incFlag, char * sym)
954 // Verbose information
957 printf("DoFile() : `%s' %s", fname, incFlag ? "INCLUDE" : "NORMAL");
960 printf(" symbol %s", sym);
965 // Reached maximum file handles
972 // Attempt to open input file
973 int fd = TryOpenFile(&fname);
977 printf("Cannot find input module %s\n", fname);
981 // The file is open; save its info in the handle and name arrays
983 name[hd] = fname; // This is the name from TryOpenFile()
989 int temp = strlen(sym); // Get symbol length
991 // 100 chars is max length of a symbol
998 // Malloc enough space for two symbols, then build the second one.
999 // Second one may be one character longer than first
1000 if ((hsym1[hd] = malloc((long)temp + 1)) == NULL
1001 || (hsym2[hd] = malloc((long)temp + 2)) == NULL)
1003 printf("DoFile() : out of memory for include-file symbols\n");
1007 strcpy(hsym1[hd], sym);
1008 strcpy(hsym2[hd], sym);
1014 printf("Last char of %s is already 'x': choose another name\n", sym);
1018 hsym2[hd][99] = 'x';
1022 hsym2[hd][temp] = 'x';
1023 hsym2[hd][temp+1] = '\0';
1027 // Increment next handle index
1035 // Pad TEXT or DATA segment to the requested boundary
1037 int PadSegment(FILE * fd, long segsize, int value)
1043 // Determine the number of padding bytes that are needed
1044 long padsize = (segsize + secalign) & ~secalign;
1045 padsize = padsize - segsize;
1047 // Fill pad array if padding is required
1054 PutWord(padptr, value);
1058 symoffset += padsize;
1060 // Write padding bytes
1061 if (fwrite(padarray, padsize, 1, fd) != 1)
1070 // Write the output file
1072 int WriteOutputFile(struct OHEADER * header)
1074 unsigned osize; // Object segment size
1075 struct OFILE * otemp; // Object file pointer
1076 int i, j; // Iterators
1077 char himage[0x168]; // Header image (COF = 0xA8)
1078 uint32_t tsoff, dsoff, bsoff; // Segment offset values
1079 unsigned index, type, value; // Symbol table index, type and value
1080 short abstype; // ABS symbol type
1081 char symbol[14]; // Symbol record for ABS files
1082 int slen; // Symbol string length
1084 symoffset = 0; // Initialise symbol offset
1086 // Add correct output extension if none
1087 if (strchr(ofile, '.') == NULL)
1090 strcat(ofile, ".cof"); // COF files (a type of abs)
1091 else if (aflag && !cflag)
1092 strcat(ofile, ".abs"); // ABS files
1094 strcat(ofile, ".o"); // Object files (partial linking, etc)
1097 FILE * fd = fopen(ofile, "wb"); // Attempt to open output file
1101 printf("Can't open output file %s\n", ofile);
1105 // Build the output file header
1106 // Absolute (COF) header
1109 tsoff = dsoff = bsoff = 0xA8; // Initialises segment offsets
1111 // Process each object file segment size to obtain a cumulative segment
1112 // size for both the TEXT and DATA segments
1113 for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
1115 dsoff += otemp->segSize[TEXT];
1116 bsoff += otemp->segSize[TEXT] + otemp->segSize[DATA];
1119 // Currently this only builds a COF absolute file. Conditionals and
1120 // additional code will need to be added for ABS and partial linking.
1122 // Build the COF_HDR
1123 PutWord(himage + 0, 0x0150 ); // Magic Number (0x0150)
1124 PutWord(himage + 2, 0x0003 ); // Sections Number (3)
1125 PutLong(himage + 4, 0x00000000 ); // Date (0L)
1126 PutLong(himage + 8, dsoff + header->dsize); // Offset to Symbols Section
1127 PutLong(himage + 12, ost_index); // Number of Symbols
1128 PutWord(himage + 16, 0x001C ); // Size of RUN_HDR (0x1C)
1129 PutWord(himage + 18, 0x0003 ); // Executable Flags (3)
1131 // Build the RUN_HDR
1132 PutLong(himage + 20, 0x00000107 ); // Magic/vstamp
1133 PutLong(himage + 24, header->tsize ); // TEXT size in bytes
1134 PutLong(himage + 28, header->dsize ); // DATA size in bytes
1135 PutLong(himage + 32, header->bsize ); // BSS size in bytes
1136 PutLong(himage + 36, tbase ); // Start of executable, normally @TEXT
1137 PutLong(himage + 40, tbase ); // @TEXT
1138 PutLong(himage + 44, dbase ); // @DATA
1140 // Build the TEXT SEC_HDR
1141 PutLong(himage + 48, 0x2E746578 );
1142 PutLong(himage + 52, 0x74000000 ); // ".text"
1143 PutLong(himage + 56, tbase ); // TEXT START
1144 PutLong(himage + 60, tbase ); // TEXT START
1145 PutLong(himage + 64, header->tsize ); // TEXT size in bytes
1146 PutLong(himage + 68, tsoff ); // Offset to section data in file
1147 PutLong(himage + 72, 0x00000000 ); // Offset to section reloc in file (0L)
1148 PutLong(himage + 76, 0x00000000 ); // Offset to debug lines structures (0L)
1149 PutLong(himage + 80, 0x00000000 ); // Nreloc/nlnno (0L)
1150 PutLong(himage + 84, 0x00000020 ); // SEC_FLAGS: STYP_TEXT
1152 // Build the DATA SEC_HDR
1153 PutLong(himage + 88, 0x2E646174 );
1154 PutLong(himage + 92, 0x61000000 ); // ".data"
1155 PutLong(himage + 96, dbase ); // DATA START
1156 PutLong(himage + 100, dbase ); // DATA START
1157 PutLong(himage + 104, header->dsize ); // DATA size in bytes
1158 PutLong(himage + 108, dsoff ); // Offset to section data in file
1159 PutLong(himage + 112, 0x00000000 ); // Offset to section reloc in file (0L)
1160 PutLong(himage + 116, 0x00000000 ); // Offset to debugging lines structures (0L)
1161 PutLong(himage + 120, 0x00000000 ); // Nreloc/nlnno (0L)
1162 PutLong(himage + 124, 0x00000040 ); // SEC_FLAGS: STYP_DATA
1164 // Build the BSS SEC_HDR
1165 PutLong(himage + 128, 0x2E627373 );
1166 PutLong(himage + 132, 0x00000000 ); // ".bss"
1167 PutLong(himage + 136, bbase ); // BSS START
1168 PutLong(himage + 140, bbase ); // BSS START
1169 PutLong(himage + 144, header->bsize ); // BSS size in bytes
1170 PutLong(himage + 148, bsoff ); // Offset to section data in file
1171 PutLong(himage + 152, 0x00000000 ); // Offset to section reloc in file (0L)
1172 PutLong(himage + 156, 0x00000000 ); // Offset to debugging lines structures (0L)
1173 PutLong(himage + 160, 0x00000000 ); // Nreloc/nlnno (0L)
1174 PutLong(himage + 164, 0x00000080 ); // SEC_FLAGS: STYP_BSS
1176 symoffset = 168; // Update symbol offset
1178 // Absolute (ABS) header
1181 // Build the ABS header
1182 PutWord(himage + 0, 0x601B ); // Magic Number (0x601B)
1183 PutLong(himage + 2, header->tsize ); // TEXT segment size
1184 PutLong(himage + 6, header->dsize ); // DATA segment size
1185 PutLong(himage + 10, header->bsize ); // BSS segment size
1186 PutLong(himage + 14, ost_index * 14 ); // Symbol table size (?)
1187 PutLong(himage + 18, 0x00000000 ); //
1188 PutLong(himage + 22, tbase ); // TEXT base address
1189 PutWord(himage + 26, 0xFFFF ); // Flags (?)
1190 PutLong(himage + 28, dbase ); // DATA base address
1191 PutLong(himage + 32, bbase ); // BSS base address
1193 symoffset = 36; // Update symbol offset
1196 // Write the header, but not if noheaderflag
1199 // Absolute (ABS) header
1202 if (fwrite(himage, 36, 1, fd) != 1)
1205 // Absolute (COF) header
1208 if (fwrite(himage, 168, 1, fd) != 1)
1213 // Write the TEXT segment of each object file
1214 for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
1216 osize = otemp->o_header.tsize;
1218 // Write only if segment has size
1222 printf("Writing TEXT Segment of %s\n", otemp->o_name);
1224 if (fwrite(otemp->o_image + 32, osize, 1, fd) != 1)
1227 // Pad to required alignment boundary
1228 if (PadSegment(fd, osize, 0x0000))
1235 // Write the DATA segment of each object file
1236 for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
1238 osize = otemp->o_header.dsize;
1240 // Write only if the segment has size
1244 printf("Writing DATA Segment of %s\n", otemp->o_name);
1246 if (fwrite((otemp->o_image + 32 + otemp->o_header.tsize), osize, 1, fd) != 1)
1249 // Pad to required alignment boundary
1250 if (PadSegment(fd, osize, 0))
1257 //wha? if (!noheaderflag)
1258 // This isn't quite right, but it's closer...
1259 // (the l and s flags tell the linker to output local & global symbols
1260 // in the symbol table, so it seems there's some other thing that's a
1261 // default set somewhere. Not 100% sure. Setting -s kills -l, BTW...)
1264 // Write the symbols table and string table
1265 // Absolute (COF) symbol/string table
1270 if (fwrite(ost, (ost_ptr - ost), 1, fd) != 1)
1273 if (fwrite(oststr, (oststr_ptr - oststr), 1, fd) != 1)
1277 // Absolute (ABS) symbol/string table
1280 // The symbol and string table have been created as part of the
1281 // DoSymbols() function and the output symbol and string tables are
1282 // in COF format. For an ABS file we need to process through this
1283 // to create the 14 character long combined symbol and string
1284 // table. Format of symbol table in ABS: AAAAAAAATTVVVV, where
1285 // (A)=STRING, (T)=TYPE & (V)=VALUE
1287 for(i=0; i<ost_index; i++)
1289 memset(symbol, 0, 14); // Initialise symbol record
1290 abstype = 0; // Initialise ABS symbol type
1291 slen = 0; // Initialise symbol string length
1292 index = GetLong(ost + (i * 12)); // Get symbol index
1293 type = GetLong((ost + (i * 12)) + 4); // Get symbol type
1295 // Skip debug symbols
1296 if (type & 0xF0000000)
1300 value = GetLong((ost + (i * 12)) + 8);
1301 slen = strlen(oststr + index);
1303 // Get symbol string (maximum 8 chars)
1307 *(symbol + j) = *(oststr + index + j);
1311 for(j=0; j<slen; j++)
1312 *(symbol + j) = *(oststr + index + j);
1315 // Modify to ABS symbol type
1318 case 0x02000000: abstype = (short)ABST_DEFINED; break;
1319 case 0x04000000: abstype = (short)ABST_DEFINED | ABST_TEXT; break;
1320 case 0x05000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_TEXT; break;
1321 case 0x06000000: abstype = (short)ABST_DEFINED | ABST_DATA; break;
1322 case 0x07000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_DATA; break;
1323 case 0x08000000: abstype = (short)ABST_DEFINED | ABST_BSS; break;
1324 case 0x09000000: abstype = (short)ABST_DEFINED | ABST_GLOBAL | ABST_BSS; break;
1326 printf("warning (WriteOutputFile): ABS, cannot determine symbol type ($%08X) [%s]\n", type, symbol);
1331 PutWord(symbol + 8, abstype); // Write back new ABS type
1332 PutLong(symbol + 10, value); // Write back value
1334 // Write symbol record
1335 if (fwrite(symbol, 14, 1, fd) != 1)
1343 printf("Close error on output file %s\n", ofile);
1350 printf("Write error on output file %s\n", ofile);
1351 fclose(fd); // Try to close output file anyway
1357 // Display the symbol load map
1359 int ShowSymbolLoadMap(struct OHEADER * header)
1361 unsigned i, o; // Inner and outer loop iterators
1362 unsigned c; // Column number
1363 unsigned index; // Symbol string index
1364 unsigned type; // Symbol type
1365 unsigned value; // Symbol value
1366 char * symbol; // Symbol string value
1369 return 0; // Return if no symbols to map
1371 printf("LOAD MAP\n\n");
1373 // Outer loop for each of the symbol areas to map out;
1374 // 0 = NON-RELOCATABLE SYMBOLS
1375 // 1 = TEXT-SEGMENT RELOCATABLE SYMBOLS
1376 // 2 = DATA-SEGMENT RELOCATABLE SYMBOLS
1377 // 3 = BSS-SEGMENT RELOCATABLE SYMBOLS
1380 // Display the correct map header for the symbols being processed
1383 case 0: printf("NON-RELOCATABLE SYMBOLS\n\n"); break;
1384 case 1: printf("TEXT-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
1385 case 2: printf("DATA-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
1386 case 3: printf("BSS-SEGMENT RELOCATABLE SYMBOLS\n\n"); break;
1389 c = 0; // Initialise column number
1391 // Inner loop to process each record in the symbol table
1392 for(i=0; i<(unsigned)ost_index; i++)
1394 index = GetLong(ost + (i * 12)); // Get symbol string index
1395 type = GetLong(ost + (i * 12) + 4); // Get symbol type
1396 value = GetLong(ost + (i * 12) + 8); // Get symbol value
1397 symbol = oststr + index; // Get symbol string
1399 // Display only three columns
1406 // If local symbols not included and the type is local then go to
1407 // next symbol record
1408 if (!lflag & !(type & 0x01000000))
1411 // Output each symbol to the display, dependant on type
1415 // Non-relocatable symbols
1416 if (type == 0x02000000 || type == 0x03000000)
1418 printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1424 // TEXT segment relocatable symbols
1425 if (type == 0x04000000 || type == 0x05000000)
1427 printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1433 // DATA segment relocatble symbols
1434 if (type == 0x06000000 || type == 0x07000000)
1436 printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1442 // BSS segment relocatable symbols
1443 if (type == 0x08000000 || type == 0x09000000)
1445 printf("%-8s %c %08X ", symbol, (type & 0x01000000) ? 'G' : 'L', value);
1461 // Stuff the (long) value of a string into the value argument. RETURNS TRUE if
1462 // the string doesn't parse. Parses only as a hexadecimal string.
1464 int GetHexValue(char * string, int * value)
1468 while (isxdigit(*string))
1470 if (isdigit(*string))
1472 *value = (*value << 4) + (*string++ - '0');
1476 if (isupper(*string))
1477 *string = tolower(*string);
1479 *value = (*value << 4) + ((*string++ - 'a') + 10);
1483 if (*string != '\0')
1485 printf("Invalid hexadecimal value");
1494 // Create one big .o file from the images already in memory, returning a
1495 // pointer to an OHEADER. Note that the oheader is just the header for the
1496 // output (plus some other information). The text, data, and fixups are all
1497 // still in the ofile images hanging off the global 'olist'.
1499 struct OHEADER * MakeOutputObject()
1501 unsigned tptr, dptr, bptr; // Bases in runtime model
1502 int ret = 0; // Return value
1503 struct OHEADER * header; // Output header pointer
1505 // Initialize cumulative segment sizes
1506 textsize = datasize = bsssize = 0;
1508 // For each object file, accumulate the sizes of the segments but remove
1509 // those object files which are unused
1510 struct OFILE * oprev = NULL; // Init previous obj file list ptr
1511 struct OFILE * otemp = olist; // Set temp pointer to object file list
1513 while (otemp != NULL)
1515 // If the object is unused, discard it...
1516 if ((otemp->o_flags & O_USED) == 0)
1520 printf("Unused object file ");
1522 printf(" discarded.\n");
1525 // Drop the entry from the linked list
1527 olist = otemp->o_next;
1529 oprev->o_next = otemp->o_next;
1531 // Free the object entry if it's not an archive file
1532 if (!otemp->isArchiveFile)
1533 free(otemp->o_image);
1537 // Save accumulated addresses in the object
1538 otemp->segBase[TEXT] = textsize;
1539 otemp->segBase[DATA] = datasize;
1540 otemp->segBase[BSS] = bsssize;
1542 // Increment total of segment sizes ensuring requested alignment
1543 textsize += (otemp->o_header.tsize + secalign) & ~secalign;
1544 datasize += (otemp->o_header.dsize + secalign) & ~secalign;
1545 bsssize += (otemp->o_header.bsize + secalign) & ~secalign;
1549 // Go to next object file list pointer
1550 otemp = otemp->o_next;
1553 // Update base addresses and inject the symbols _TEXT_E, _DATA_E and _BSS_E
1559 // DATA follows TEXT
1560 dbase = tval + textsize;
1564 bbase = tval + textsize + datasize;
1566 // BSS is independent of DATA
1571 // DATA is independent of TEXT
1576 bbase = dval + datasize;
1578 // BSS is independent of DATA
1582 // Inject segment end labels, for C compilers that expect this shite
1583 OSTAdd("_TEXT_E", 0x05000000, tbase + textsize);
1584 OSTAdd("_DATA_E", 0x07000000, dbase + datasize);
1585 OSTAdd("_BSS_E", 0x09000000, bbase + bsssize);
1587 // Place each unresolved symbol in the output symbol table
1588 // N.B.: It only gets here to do this if user passes in -u flag
1589 // [Only used here, once]
1593 // Initialise base addresses
1594 tptr = dptr = bptr = 0;
1596 // For each file, relocate its symbols and add them to the output symbol
1601 while (otemp != NULL)
1603 otemp->o_tbase = tptr;
1604 otemp->o_dbase = dptr;
1605 otemp->o_bbase = bptr;
1606 tptr += (otemp->o_header.tsize + secalign) & ~secalign;
1607 dptr += (otemp->o_header.dsize + secalign) & ~secalign;
1608 bptr += (otemp->o_header.bsize + secalign) & ~secalign;
1610 // For each symbol, (conditionally) add it to the ost
1611 // For ARCHIVE markers, this adds the symbol for the file & returns
1612 // (Shamus: N.B. it does no such thing ATM)
1613 // [Only used here, once]
1614 if (DoSymbols(otemp))
1618 otemp = otemp->o_next;
1621 // Places all the externs, globals etc into the output symbol table
1622 if (DoCommon() == -1)
1625 // Create a new output file header
1626 header = new_oheader();
1630 printf("MakeOutputObject: out of memory!\n");
1634 // Fill in the output header. Does not match the actual output but values
1635 // used as reference
1636 header->magic = 0x0150; // COF magic number
1637 header->tsize = textsize; // TEXT segment size
1638 header->dsize = datasize; // DATA segment size
1639 header->bsize = bsssize; // BSS segment size
1640 header->ssize = (ost_ptr - ost); // Symbol table size
1641 header->ostbase = ost; // Output symbol table base address
1643 // For each object file, relocate its TEXT and DATA segments. OR the result
1644 // into ret so all files get moved (and errors reported) before returning
1645 // with the error condition
1646 for(otemp=olist; otemp!=NULL; otemp=otemp->o_next)
1648 ret |= RelocateSegment(otemp, T_TEXT); // TEXT segment relocations
1649 ret |= RelocateSegment(otemp, T_DATA); // DATA segment relocations
1652 // Done with global symbol hash tables
1655 return (ret ? (struct OHEADER *)NULL : header);
1660 // Add symbol to hash list
1662 int AddSymbolToHashList(struct HREC ** hptr, char * sym, struct OFILE * ofile,
1663 long value, int type)
1665 struct HREC * htemp = new_hrec();
1669 printf("Out of memory\n");
1673 // Shamus: Moar testing...
1676 printf("AddSymbolToHashList(): hptr=$%08X, sym=\"%s\", ofile=$%08X, value=$%X, type=$%X\n", hptr, sym, ofile, value, type);
1679 // Populate hash record
1680 memset(htemp->h_sym, 0, SYMLEN);
1681 strcpy(htemp->h_sym, sym);
1682 htemp->h_ofile = ofile;
1683 htemp->h_value = value;
1684 htemp->h_type = type;
1686 // Add new hash to the front of the list (hence the ** for hptr)
1687 htemp->h_next = *hptr;
1695 // Add symbol to the unresolved symbols hash table (really, it's a linked list)
1697 int AddUnresolvedSymbol(char * sym, struct OFILE * ofile)
1700 printf("AddUnresolvedSymbol(%s, %s)\n", sym, ofile->o_name);
1702 return AddSymbolToHashList(&unresolved, sym, ofile, 0L, 0);
1707 // Remove the HREC from the unresolved symbol list, and pass back a pointer
1708 // to the spot where the HREC was.
1710 struct HREC * RemoveUnresolvedSymbol(struct HREC * hrec)
1712 struct HREC * ptr = unresolved;
1713 struct HREC * previous = NULL;
1715 while ((ptr != hrec) && (ptr != NULL))
1725 struct HREC * next = ptr->h_next;
1727 // Remove the head if nothing previous, otherwise, remove what we found
1728 if (previous == NULL)
1731 previous->h_next = next;
1739 // Add symbol to the unresolved symbols hash table
1741 int AddARSymbol(char * sym, struct OFILE * ofile)
1744 printf("AddARSymbol(%s, %s)\n", sym, ofile->o_name);
1746 return AddSymbolToHashList(&arSymbol, sym, ofile, 0L, 0);
1751 // Generate hash value from the 1st 15 characters of the symbol modulo the
1752 // number of buckets in the hash.
1754 int GetHash(char * s)
1756 // For this to be consistent, the symbol MUST be zeroed out beforehand!
1757 // N.B.: strncpy() pads zeroes for us, if the symbol is less than 15 chars.
1761 int i = (c[0] + c[1] + c[2] + c[3] + c[4] + c[5] + c[6] + c[7] + c[8]
1762 + c[9] + c[10] + c[11] + c[12] + c[13] + c[14]) % NBUCKETS;
1768 // Lookup a symbol in the hash table.
1769 // Returns either a pointer to the HREC or NULL if not found.
1771 struct HREC * LookupHREC(char * symbol)
1773 struct HREC * hptr = htable[GetHash(symbol)];
1775 while (hptr != NULL)
1777 //This is utter failure...
1778 // if (symcmp(symbol, hptr->h_sym)) <-- left here for giggles :D - LinkoVitch
1779 // Return hash record pointer if found
1780 if (strcmp(symbol, hptr->h_sym) == 0)
1783 hptr = hptr->h_next;
1791 // Lookup a symbol in the AR symbol table.
1792 // Returns either a pointer to the HREC or NULL if not found.
1794 struct HREC * LookupARHREC(char * symbol)
1796 struct HREC * hptr = arSymbol;
1798 while (hptr != NULL)
1800 // Return hash record pointer if found
1801 if (strcmp(symbol, hptr->h_sym) == 0)
1804 hptr = hptr->h_next;
1812 // Add the imported symbols from this file to unresolved, and the global and
1813 // common (???) symbols to the exported hash table.
1815 // Change old-style commons (type == T_EXTERN, value != 0) to new-style ones
1816 // (type == (T_GLOBAL | T_EXTERN)). [??? O_o]
1817 // [N.B.: Whoever wrote the above didn't know what the fuck they were talking
1818 // about. Commons (globals) are exactly what they are calling 'old
1819 // style'. Also note, that there is no "T_GLOBAL" or "T_EXTERN" symbols
1820 // defined anywhere in the code.]
1822 int AddSymbols(struct OFILE * Ofile)
1824 struct HREC * hptr; // Hash record pointer
1828 printf("AddSymbols: for file %s\n", Ofile->o_name);
1829 printf(" t_bbase = $%X\n", Ofile->o_tbase);
1830 printf(" d_bbase = $%X\n", Ofile->o_dbase);
1831 printf(" o_bbase = $%X\n", Ofile->o_bbase);
1832 printf(" tsize = $%X\n", Ofile->o_header.tsize);
1833 printf(" dsize = $%X\n", Ofile->o_header.dsize);
1834 printf(" bsize = $%X\n", Ofile->o_header.bsize);
1835 printf(" reloc.tsize = $%X\n", Ofile->o_header.absrel.reloc.tsize);
1836 printf(" reloc.dsize = $%X\n", Ofile->o_header.absrel.reloc.dsize);
1839 // Get base pointer, start of sym fixups
1840 char * ptr = Ofile->o_image + 32
1841 + Ofile->o_header.tsize
1842 + Ofile->o_header.dsize
1843 + Ofile->o_header.absrel.reloc.tsize
1844 + Ofile->o_header.absrel.reloc.dsize;
1845 char * sfix = ptr; // Set symbol fixup pointer
1846 char * sstr = sfix + Ofile->o_header.ssize; // Set symbol table pointer
1847 long nsymbols = Ofile->o_header.ssize / 12; // Obtain number of symbols
1851 long index = GetLong(sfix); // Get symbol string index
1852 long type = GetLong(sfix + 4); // Get symbol type
1853 long value = GetLong(sfix + 8); // Get symbol value
1855 if ((Ofile->isArchiveFile) && !(Ofile->o_flags & O_USED))
1857 if ((type & T_GLBL) && (type & (T_SEG | T_ABS)))
1858 if (AddARSymbol(sstr + index, Ofile))
1861 else if (type == T_GLBL)
1863 // Global symbol that may or may not be in the current unit
1864 hptr = LookupHREC(sstr + index);
1867 hptr->h_ofile->o_flags |= O_USED; // Mark .o file as used
1868 // Otherwise, *maybe* add to unresolved list
1871 // Check to see if this is a common symbol; if so, add it to
1875 // Actually, we need to convert this to a BSS symbol,
1876 // increase the size of the BSS segment for this object, &
1877 // add it to the hash list
1878 uint32_t bssLocation = Ofile->o_header.tsize + Ofile->o_header.dsize + Ofile->o_header.bsize;
1879 Ofile->o_header.bsize += value;
1880 Ofile->segSize[BSS] += value;
1882 value = bssLocation;
1883 PutLong(sfix + 4, type);
1884 PutLong(sfix + 8, value);
1887 printf("AddSymbols: Resetting common label to BSS label\n");
1889 if (AddSymbolToHashList(&htable[GetHash(sstr + index)],
1890 sstr + index, Ofile, value, type))
1891 return 1; // Error if addition failed
1893 // Make sure it's not a built-in external...
1894 else if ((strcmp(sstr + index, "_TEXT_E") != 0)
1895 && (strcmp(sstr + index, "_DATA_E") != 0)
1896 && (strcmp(sstr + index, "_BSS_E") != 0))
1898 if (AddUnresolvedSymbol(sstr + index, Ofile))
1899 return 1; // Error if addition failed
1903 else if ((type & T_GLBL) && (type & (T_SEG | T_ABS)))
1905 hptr = LookupHREC(sstr + index);
1907 // Symbol isn't in the table, so try to add it:
1910 if (AddSymbolToHashList(&htable[GetHash(sstr + index)],
1911 sstr + index, Ofile, value, type))
1916 // Symbol already exists, decide what to do about it
1917 // [N.B.: This isn't a check for a common symbol...
1918 // BEWARE OF BAD INTERPRETATIONS!!]
1919 if (iscommon(hptr->h_type))
1921 // Mismatch: common came first; warn and keep the global
1924 printf("Warning: %s: global from ", sstr + index);
1926 printf(" used, common from ");
1927 WriteARName(hptr->h_ofile);
1928 printf(" discarded.\n");
1931 hptr->h_ofile = Ofile;
1932 hptr->h_type = type;
1933 hptr->h_value = value;
1937 // Global exported by another ofile; warn and make this one
1941 printf("Duplicate symbol %s: ", sstr + index);
1942 WriteARName(hptr->h_ofile);
1945 printf(" discarded\n");
1948 // Set the global in this unit to pure external
1949 // (is this a good idea? what if the other one is a ref to
1951 PutLong(sfix + 4, T_GLBL);
1956 sfix += 12; // Increment symbol fixup pointer
1957 nsymbols--; // Decrement num of symbols to process
1960 // Success loading symbols
1966 // Process object file for symbols
1968 int DoItem(struct OFILE * obj)
1970 // Allocate memory for object record ptr
1971 struct OFILE * Ofile = new_ofile();
1975 printf("Out of memory while processing %s\n", obj->o_name);
1979 // Starting after all pathnames, etc., copy .o file name to Ofile
1980 char * temp = PathTail(obj->o_name);
1982 // Check filename length
1983 if (strlen(temp) > FNLEN - 1)
1985 printf("File name too long: %s\n", temp);
1989 // Check archive name length
1990 if (strlen(obj->o_arname) > (FNLEN - 1))
1992 printf("Archive name too long: %s\n", obj->o_arname);
1996 strcpy(Ofile->o_name, temp); // Store filename
1997 strcpy(Ofile->o_arname, obj->o_arname); // Store archive name
1999 // Initialise object record information
2000 Ofile->o_next = NULL;
2004 Ofile->o_flags = obj->o_flags;
2005 Ofile->o_image = obj->o_image;
2006 Ofile->isArchiveFile = obj->isArchiveFile;
2007 Ofile->segSize[TEXT] = obj->segSize[TEXT];
2008 Ofile->segSize[DATA] = obj->segSize[DATA];
2009 Ofile->segSize[BSS] = obj->segSize[BSS];
2010 char * ptr = obj->o_image;
2012 Ofile->o_header.magic = GetLong(ptr);
2013 Ofile->o_header.tsize = GetLong(ptr + 4);
2014 Ofile->o_header.dsize = GetLong(ptr + 8);
2015 Ofile->o_header.bsize = GetLong(ptr + 12);
2016 Ofile->o_header.ssize = GetLong(ptr + 16);
2017 Ofile->o_header.absrel.reloc.tsize = GetLong(ptr + 24);
2018 Ofile->o_header.absrel.reloc.dsize = GetLong(ptr + 28);
2020 // Round BSS off to alignment boundary (??? isn't this already done ???)
2021 Ofile->o_header.bsize = (Ofile->o_header.bsize + secalign) & ~secalign;
2023 if ((Ofile->o_header.dsize & 7) && wflag)
2025 printf("Warning: data segment size of ");
2027 printf(" is not a phrase multiple\n");
2030 // Check for odd segment sizes
2031 if ((Ofile->o_header.tsize & 1) || (Ofile->o_header.dsize & 1)
2032 || (Ofile->o_header.bsize & 1))
2034 printf("Error: odd-sized segment in ");
2036 printf("; link aborted.\n");
2040 if (AddSymbols(Ofile))
2043 // Add this file to the olist
2047 olast->o_next = Ofile;
2055 // Handle items in processing list.
2057 // After loading all objects, archives & include files, we now go and process
2058 // each item on the processing list (plist). Once this is done, we go through
2059 // any unresolved symbols left and see if they have shown up.
2061 int ProcessLists(void)
2063 // Process object file list first (adds symbols from each unit & creates
2065 while (plist != NULL)
2070 struct OFILE * ptemp = plist;
2071 plist = plist->o_next;
2077 // Process the unresolved symbols list. This may involve pulling in symbols
2078 // from any included .a units. Such units are lazy linked by default; we
2079 // generally don't want everything they provide, just what's referenced.
2080 for(uptr=unresolved; uptr!=NULL; )
2083 printf("LookupHREC(%s) => ", uptr->h_sym);
2085 struct HREC * htemp = LookupHREC(uptr->h_sym);
2089 // Found it in the symbol table!
2091 printf("%s in %s (=$%06X)\n", (isglobal(htemp->h_type) ? "global" : "common"), htemp->h_ofile->o_name, htemp->h_value);
2093 // Mark the .o unit that the symbol is in as seen & remove from the
2095 htemp->h_ofile->o_flags |= O_USED;
2096 uptr = RemoveUnresolvedSymbol(uptr);
2103 // Check to see if the unresolved symbol is on the AR symbol list.
2104 htemp = LookupARHREC(uptr->h_sym);
2106 // If the unresolved symbol is in a .o unit that is unused, we can
2107 // drop it; same if the unresolved symbol is in the exported AR
2108 // symbol list. Otherwise, go to the next unresolved symbol.
2109 if (!(uptr->h_ofile->o_flags & O_USED) || (htemp != NULL))
2110 uptr = RemoveUnresolvedSymbol(uptr);
2112 uptr = uptr->h_next;
2114 // Now that we've possibly deleted the symbol from unresolved list
2115 // that was also in the AR list, we add the symbols from this .o
2116 // unit to the symbol table, mark the .o unit as used, and restart
2117 // scanning the unresolved list as there is a good possibility that
2118 // the symbols in the unit we're adding has unresolved symbols as
2122 htemp->h_ofile->o_flags |= O_USED;
2123 AddSymbols(htemp->h_ofile);
2129 // Show files used if the user requests it.
2132 printf("Files used:\n");
2133 struct OFILE * filePtr = olist;
2135 while (filePtr != NULL)
2137 if (filePtr->o_flags & O_USED)
2139 printf(" %s%s%s\n", filePtr->o_name, (filePtr->isArchiveFile ? ":" : ""), (filePtr->isArchiveFile ? filePtr->o_arname : nullStr));
2142 filePtr = filePtr->o_next;
2151 // Extract filename from path
2153 char * PathTail(char * name)
2155 // Find last occurance of PATH_DELIMETER
2156 char * temp = strrchr(name, PATH_DELIMITER);
2158 // Return what was passed in if path delimiter was not found
2167 // Add input file to processing list
2169 int AddToProcessingList(char * ptr, char * fname, char * arname, uint8_t arFile, uint32_t tSize, uint32_t dSize, uint32_t bSize)
2173 // First time object record allocation
2174 plist = new_ofile();
2179 // Next object record allocation
2180 plast->o_next = new_ofile();
2181 plast = plast->o_next;
2186 printf("Out of memory.\n"); // Error if memory allocation fails
2190 // Discard paths from filenames...
2191 fname = PathTail(fname);
2192 arname = PathTail(arname);
2194 // Check for filename length errors...
2195 if (strlen(fname) > (FNLEN - 1))
2197 printf("File name too long: %s (sorry!)\n", fname);
2201 if (strlen(arname) > (FNLEN - 1))
2203 printf("AR file name too long: %s (sorry!)\n", arname);
2207 strcpy(plast->o_name, fname); // Store filename sans path
2208 strcpy(plast->o_arname, arname); // Store archive name sans path
2209 plast->o_image = ptr; // Store data pointer
2210 plast->o_flags = (arFile ? 0 : O_USED); // File is used if NOT in archive
2211 plast->o_next = NULL; // Initialise next record pointer
2212 plast->isArchiveFile = arFile; // Shamus: Temp until can sort it out
2213 plast->segSize[TEXT] = tSize;
2214 plast->segSize[DATA] = dSize;
2215 plast->segSize[BSS] = bSize;
2217 return 0; // Return without errors
2222 // Process in binary include files and add them to the processing list. This
2223 // routine takes in the binary file and creates an 'object' file in memory.
2224 // Sym1/Sym2 point to the start and end of data.
2226 // Image size for include files is:
2227 // Header ....... 32 bytes
2228 // Data ......... dsize
2229 // Sym fixups ... 2 * 12 bytes
2230 // Symbol size .. 4 bytes (Value to include symbols and terminating null)
2231 // Symbols ...... (strlen(sym1) + 1) + (strlen(sym2) + 1)
2232 // Terminate .... 4 bytes (0x00000000)
2234 int LoadInclude(char * fname, int handle, char * sym1, char * sym2, int segment)
2238 unsigned symtype = 0;
2239 uint32_t tSize = 0, dSize = 0, bSize = 0;
2241 long fsize = FileSize(handle); // Get size of include file
2242 long dsize = (fsize + secalign) & ~secalign; // Align size to boundary
2243 int sym1len = strlen(sym1) + 1; // Get sym1 length + null termination
2244 int sym2len = strlen(sym2) + 1; // Get sym2 length + null termination
2245 long size = 32 + dsize + 24 + 4 + sym1len + sym2len + 4;
2247 // Use calloc so the header & fixups initialize to zero
2248 // Allocate object image memory
2249 if ((ptr = calloc(size, 1)) == NULL)
2251 printf("Out of memory while including %s\n", fname);
2256 // Read in binary data
2257 if (read(handle, ptr + 32, fsize) != fsize)
2259 printf("File read error on %s\n", fname);
2267 // Build this image's dummy header
2268 PutLong(ptr, 0x00000107); // Magic number
2272 PutLong(ptr+4, dsize); // Text size
2273 PutLong(ptr+8, 0L); // Data size
2274 symtype = 0x05000000;
2279 PutLong(ptr+4, 0L); // Text size
2280 PutLong(ptr+8, dsize); // Data size
2281 symtype = 0x07000000;
2285 PutLong(ptr+12, 0L); // BSS size
2286 PutLong(ptr+16, 24); // Symbol table size
2287 PutLong(ptr+20, 0L); // Entry point
2288 PutLong(ptr+24, 0L); // TEXT relocation size
2289 PutLong(ptr+28, 0L); // DATA relocation size
2291 sptr = ptr + 32 + dsize; // Set sptr to symbol table location
2293 PutLong(sptr, 4L); // String offset of symbol1
2294 PutLong(sptr+4, symtype); // Symbol type
2295 PutLong(sptr+8, 0x00000000); // Symbol has no value (START)
2296 PutLong(sptr+12, 4L + (sym2len - 1)); // String offset of symbol2
2297 PutLong(sptr+16, symtype); // Symbol type
2298 PutLong(sptr+20, dsize); // Symbol is data size (END)
2300 sptr = ptr + 32 + dsize + 24; // Set sptr to symbol table size loc
2302 PutLong(sptr, sym1len + 4L); // Size of symbol table
2304 sptr = ptr + 32 + dsize + 24 + 4; // Set sptr to symbol table location
2306 for(i=0; i<(sym1len-1); i++) // Write symbol1 to string table
2309 sptr += (sym1len - 1); // Step past symbol string
2310 *sptr = '\0'; // Terminate symbol string
2311 sptr += 1; // Step past termination
2313 for(i=0; i<(sym2len-1); i++) // Write symbol2 to string table
2316 sptr += (sym2len - 1); // Step past symbol string
2317 *sptr = '\0'; // Terminate symbol string
2318 sptr += 1; // Step past termination
2320 PutLong(sptr, 0L); // Terminating long for object file
2322 return AddToProcessingList(ptr, fname, nullStr, 0, tSize, dSize, bSize);
2327 // Takes a file name, gets in its image, puts it on plist. The image may
2328 // already be in memory: If so, the ptr arg is non-null. If so, the file is
2329 // already closed. Note that the file is already open (from DoFile()). RETURNS
2330 // a pointer to the OFILE structure for this file, so you can diddle its flags
2331 // (DoFile sets O_USED for files on the command line).
2333 int LoadObject(char * fname, int fd, char * ptr)
2335 uint32_t tSize = 0, dSize = 0, bSize = 0;
2339 long size = FileSize(fd);
2341 // Allocate memory for file data
2346 printf("Out of memory while processing %s\n", fname);
2351 // Read in file data
2352 if (read(fd, ptr, size) != size)
2354 printf("File read error on %s\n", fname);
2360 tSize = (GetLong(ptr + 4) + secalign) & ~secalign;
2361 dSize = (GetLong(ptr + 8) + secalign) & ~secalign;
2362 bSize = (GetLong(ptr + 12) + secalign) & ~secalign;
2366 // Now add this image to the list of pending ofiles (plist)
2367 return AddToProcessingList(ptr, fname, nullStr, 0, tSize, dSize, bSize);
2372 // What it says on the tin: check for a .o suffix on the passed in string
2374 uint8_t HasDotOSuffix(char * s)
2376 char * temp = strrchr(s, '.');
2378 if ((temp == NULL) || (strncmp(temp, ".o", 2) != 0))
2386 // Process an ar archive file (*.a)
2388 int LoadArchive(char * fname, int fd)
2390 // Read in the archive file to memory and process
2391 long size = FileSize(fd);
2392 char * ptr = malloc(size);
2393 char * endPtr = ptr + size;
2394 char * longFilenames = NULL;
2398 printf("Out of memory while processing %s\n", fname);
2403 if (read(fd, ptr, size) != size)
2405 printf("File read error on %s\n", fname);
2413 // Save the pointer for later...
2414 arPtr[arIndex++] = ptr;
2415 char objName[FNLEN];
2418 //printf("\nProcessing AR file \"%s\"...\n", fname);
2421 // Loop through all objects in the archive and process them
2424 memset(objName, 0, 17);
2429 // if ((ptr[i] == '/') || (ptr[i] == ' '))
2430 if ((ptr[i] == ' ') && (i != 0))
2436 objName[i] = ptr[i];
2441 if (ptr[48 + i] == ' ')
2447 objSize[i] = ptr[48 + i];
2450 // Check to see if a long filename was requested
2451 // N.B.: " " is for GNU archives, and "/" is for BSD archives
2452 if ((objName[0] == 0x20) || (objName[0] == '/'))
2454 uint32_t fnSize = atoi(objName + 1);
2456 if (longFilenames != NULL)
2459 char * currentFilename = longFilenames + fnSize;
2461 while (*currentFilename != 0x0A)
2462 objName[i++] = *currentFilename++;
2468 if ((strncmp(objName, "ARFILENAMES/", 12) == 0) || (strncmp(objName, "//", 2) == 0))
2470 longFilenames = ptr + 60;
2472 else if (HasDotOSuffix(objName))
2475 // Strip off any trailing forward slash at end of object name
2476 int lastChar = strlen(objName) - 1;
2478 if (objName[lastChar] == '/')
2479 objName[lastChar] = 0;
2481 //printf("Processing object \"%s\" (size == %i, obj_index == %i)...\n", objName, atoi(objSize), obj_index);
2482 uint32_t tSize = (GetLong(ptr + 60 + 4) + secalign) & ~secalign;
2483 uint32_t dSize = (GetLong(ptr + 60 + 8) + secalign) & ~secalign;
2484 uint32_t bSize = (GetLong(ptr + 60 + 12) + secalign) & ~secalign;
2486 if (AddToProcessingList(ptr + 60, objName, fname, 1, tSize, dSize, bSize))
2490 uint32_t size = atoi(objSize);
2491 size += (size & 0x01 ? 1 : 0);
2494 while (ptr < endPtr);
2501 // Process files (*.o, *.a) passed in on the command line
2503 int ProcessFiles(void)
2506 char magic[8]; // Magic header number (4 bytes for *.o, 8 for *.a)
2508 // Process all file handles
2509 for(i=0; i<(int)hd; i++)
2511 // Verbose mode information
2513 printf("Read file %s%s\n", name[i], (hflag[i] ? " (include)" : ""));
2517 // Attempt to read file magic number (OBJECT/ARCHIVE FILES)
2518 if (read(handle[i], magic, 8) != 8)
2520 printf("Error reading file %s\n", name[i]);
2525 lseek(handle[i], 0L, 0); // Reset to start of input file
2527 // Look for RMAC/MAC/GCC (a.out) object files
2528 if ((GetLong(magic) & 0xFFFF) == 0x0107)
2530 // Process input object file
2531 if (LoadObject(name[i], handle[i], 0L))
2534 // Otherwise, look for an object archive file
2535 else if (strncmp(magic, "!<arch>\x0A", 8) == 0)
2537 if (LoadArchive(name[i], handle[i]))
2542 // Close file and error
2543 printf("%s is not a supported object or archive file\n", name[i]);
2544 printf("Magic == [%02X][%02X][%02X][%02X]\n", magic[0], magic[1], magic[2], magic[3]);
2552 // If hflag[i] is 1, include this in the data segment; if 2, put it
2554 if (LoadInclude(name[i], handle[i], hsym1[i], hsym2[i], hflag[i] - 1))
2559 // Free include, symbol & object handles
2560 for(i=0; i<(int)hd; i++)
2571 // Reset next handle indicator
2578 // Load newargv with pointers to arguments found in the buffer
2580 int parse(char * buf, char * newargv[])
2585 printf("begin parsing\n");
2589 while (*buf && strchr(",\t\n\r\14 ", *buf))
2593 if (*buf == '\0' || *buf == 26)
2597 printf("No commands in command file\n");
2606 /* test for comment */
2609 /* found a comment; skip to next \n and start over */
2610 while (*buf && *buf != '\n')
2618 printf("Too many arguments in command file\n");
2624 while (!strchr(",\t\n\r\14 ", *buf))
2626 if (*buf == '\0' || *buf == 26)
2628 printf("Finished parsing %d args\n", i);
2638 printf("argv[%d] = \"%s\"\n", i, newargv[i]);
2646 // Process in a link command file
2648 int docmdfile(char * fname)
2650 int fd; // File descriptor
2651 unsigned size; // Command file size
2652 char * ptr; // Pointer
2653 int newargc; // New argument count
2654 char * (*newargv)[]; // New argument value array
2656 // Verbose information
2658 printf("docmdfile(%s)\n", fname);
2660 // Allocate memory for new argument values
2661 newargv = malloc((long)(sizeof(char *) * MAXARGS));
2665 printf("Out of memory.\n");
2669 // Attempt to open and read in the command file
2672 if ((fd = open(fname, _OPEN_FLAGS)) < 0)
2674 printf("Cannot open command file %s.\n", fname);
2678 size = FileSize(fd);
2680 if ((ptr = malloc(size + 1)) == NULL)
2682 printf("Out of memory.\n");
2687 if (read(fd, ptr, size) != (int)size)
2689 printf("Read error on command file %s.\n", fname);
2694 *(ptr + size) = 0; // Null terminate the buffer
2699 printf("No command filename specified\n");
2703 // Parse the command file
2704 if ((newargc = parse(ptr, *newargv)) == -1)
2709 // Process the inputted flags
2710 if (doargs(newargc, *newargv))
2712 printf("docmdfile: doargs returns TRUE\n");
2724 // Take an argument list and parse the command line
2726 int doargs(int argc, char * argv[])
2728 int i = 1; // Iterator
2729 int c; // Command line character
2730 char * ifile, * isym; // File name and symbol name for -i
2732 // Parse through option switches & files
2735 // Process command line switches
2736 if (argv[i][0] == '-')
2740 printf("Illegal option argument: %s\n\n", argv[i]);
2745 c = argv[i++][1]; // Get next character in command line
2747 // Process command line switch
2750 case '?': // Display usage information
2757 case 'A': // Set absolute linking on
2763 printf("Not enough arguments to -a\n");
2767 aflag = 1; // Set abs link flag
2769 // Segment order is TEXT, DATA, BSS
2770 // Text segment can be 'r' or a value
2771 if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
2773 ttype = -1; // TEXT segment is relocatable
2775 else if ((*argv[i] == 'x' || *argv[i] == 'X'))
2777 printf("Error in text-segment address: cannot be contiguous\n");
2780 else if (GetHexValue(argv[i], &tval))
2782 printf("Error in text-segment address: %s is not 'r' or an address.", argv[i]);
2788 // Data segment can be 'r', 'x' or a value
2789 if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
2791 dtype = -1; // DATA segment is relocatable
2793 else if ((*argv[i] == 'x' || *argv[i] == 'X'))
2795 dtype = -2; // DATA follows TEXT
2797 else if (GetHexValue(argv[i], &dval))
2799 printf("Error in data-segment address: %s is not 'r', 'x' or an address.", argv[i]);
2805 // BSS segment can be 'r', 'x' or a value
2806 if ((*argv[i] == 'r' || *argv[i] == 'R') && !argv[i][1])
2808 btype = -1; // BSS segment is relocatable
2810 else if ((*argv[i] == 'x' || *argv[i] == 'X'))
2812 btype = -3; // BSS follows DATA
2814 else if (GetHexValue(argv[i], &bval))
2816 printf("Error in bss-segment address: %s is not 'r', 'x[td]', or an address.", argv[i]);
2823 case 'B': // Don't remove muliply defined locals
2830 case 'C': // Process a command file
2833 printf("Not enough arguments to -c\n");
2837 if (docmdfile(argv[i++]))
2844 case 'D': // Wait for "return" before exiting
2852 case 'E': // Output COFF (absolute only)
2856 printf("Warning: -e overridden by -n, output will be headerless\n");
2860 case 'G': // Output source level debugging
2861 printf("\'g\' flag not currently implemented\n");
2864 if (gflag) warn('g', 1);
2869 case 'I': // Include binary file
2872 printf("Not enough arguments to -i\n");
2879 // handle -ii (No truncation)
2880 if ((argv[i-3][2] == 'i') || (argv[i-3][2] == 'I'))
2883 printf("warning: (-ii) COFF format output not specified\n");
2885 // handle -i (Truncation)
2888 if (strlen(isym) > 8)
2892 // Place include files in the DATA segment only
2893 if (DoFile(ifile, DSTSEG_D, isym))
2898 case 'L': // Add local symbols
2905 case 'M': // Produce load symbol map
2912 case 'N': // Output no header to .abs file
2917 printf("Warning: -e overridden by -n, output will be headerless\n");
2922 case 'O': // Specify an output file
2930 printf("No output filename following -o switch\n");
2934 if (strlen(argv[i]) > FARGSIZE - 5)
2936 printf("Output file name too long (sorry!)\n");
2940 strcpy(ofile, argv[i++]);
2943 case 'R': // Section alignment size
2949 switch (argv[i-1][2])
2951 case 'w': case 'W': secalign = 1; break; // Word alignment
2952 case 'l': case 'L': secalign = 3; break; // Long alignment
2953 case 'p': case 'P': secalign = 7; break; // Phrase alignment
2954 case 'd': case 'D': secalign = 15; break; // Double phrase alignment
2955 case 'q': case 'Q': secalign = 31; break; // Quad phrase alignment
2956 default: secalign = 7; break; // Default phrase alignment
2961 case 'S': // Output only global symbols
2968 case 'U': // Undefined symbols
2972 case 'V': // Verbose information
2973 if (!vflag && !versflag)
2981 case 'W': // Show warnings flag
2991 printf("No directory filename following -y switch\n");
2995 if (strlen(argv[i]) > FARGSIZE * 3)
2997 printf("Directory file name too long (sorry!)\n");
3001 strcpy(libdir, argv[i++]);
3004 case 'Z': // Suppress banner flag
3011 printf("unknown option argument `%c'\n", c);
3017 // Not a switch, then process as a file
3018 if (DoFile(argv[i++], 0, NULL))
3023 if (!oflag && vflag)
3025 strcpy(ofile, "output");
3026 printf("Output file is %s[.ext]\n", ofile);
3030 printf("Output file is %s\n", ofile);
3035 // No problems encountered
3041 // Display version information
3043 void ShowVersion(void)
3045 if (displaybanner)// && vflag)
3053 "\nRenamed Linker for Atari Jaguar\n"
3054 "Copyright (c) 199x Allan K. Pratt, 2014-2021 Reboot & Friends\n"
3055 "V%i.%i.%i %s (%s)\n\n", MAJOR, MINOR, PATCH, __DATE__, PLATFORM);
3061 // Display command line help
3066 printf(" %s [-options] file(s)\n", cmdlnexec);
3068 printf("Options:\n");
3069 printf(" -? or -h display usage information\n");
3070 printf(" -a <text> <data> <bss> output absolute file (default: ABS)\n");
3071 printf(" hex value: segment address\n");
3072 printf(" r: relocatable segment\n");
3073 printf(" x: contiguous segment\n");
3074 printf(" -b don't remove multiply defined local labels\n");
3075 printf(" -c <fname> add contents of <fname> to command line\n");
3076 printf(" -d wait for key after link\n");
3077 printf(" -e output COF absolute file\n");
3078 printf(" -g output source-level debugging\n");
3079 printf(" -i <fname> <label> incbin <fname> and set <label> (trunc to 8 chars)\n");
3080 printf(" -ii <fname> <label> incbin <fname> and set <label> (no truncation)\n");
3081 printf(" -l add local symbols\n");
3082 printf(" -m produce load symbols map\n");
3083 printf(" -n output no file header to absolute file (overrides -e)\n");
3084 printf(" -o <fname> set output name\n");
3085 printf(" -r<size> section alignment size\n");
3086 printf(" w: word (2 bytes)\n");
3087 printf(" l: long (4 bytes)\n");
3088 printf(" p: phrase (8 bytes, default alignment)\n");
3089 printf(" d: double phrase (16 bytes)\n");
3090 printf(" q: quad phrase (32 bytes)\n");
3091 printf(" -s output only global symbols (supresses -l)\n");
3092 printf(" -u allow unresolved symbols (experimental)\n");
3093 printf(" -v set verbose mode\n");
3094 printf(" -w show linker warnings\n");
3095 printf(" -y <fname> set include path (also set by RLNPATH)\n");
3096 printf(" -z suppress banner\n");
3104 void ExitLinker(void)
3108 // Display link status if verbose mode
3110 printf("Link %s.\n", errflag ? "aborted" : "complete");
3112 // Wait for return key if requested
3115 printf("\nPress the [RETURN] key to continue. ");
3116 char * c = fgets(tempbuf, 128, stdin);
3123 int main(int argc, char * argv[])
3125 cmdlnexec = argv[0]; // Obtain executable name
3126 char * s = getenv("RLNPATH"); // Attempt to obtain env variable
3129 strcpy(libdir, s); // Store it if found
3131 // Initialize some vars
3132 tval = dval = bval = 0;
3133 ttype = dtype = btype = 0;
3135 // Parse the command line
3136 if (doargs(argc, argv))
3142 // Check to see if include paths actually exist
3143 if (strlen(libdir) > 0)
3145 DIR * test = opendir(libdir);
3149 printf("Invalid include path: %s\n", libdir);
3157 if (!zflag && !vflag)
3159 ShowVersion(); // Display version information
3160 versflag = 1; // We've dumped the version banner
3163 // Load in specified files/objects and add to processing list
3170 // Work in items in processing list & deal with unresolved list
3177 // Check that there is something to link
3184 // Report unresolved externals
3185 if (unresolved != NULL)
3187 printf("UNRESOLVED SYMBOLS\n");
3189 // Don't list them if two -u's or more
3192 struct HREC * utemp = unresolved;
3194 while (utemp != NULL)
3196 printf("\t%s (", utemp->h_sym);
3197 WriteARName(utemp->h_ofile);
3199 utemp = utemp->h_next;
3210 // Make one output object from input objects
3211 struct OHEADER * header = MakeOutputObject();
3222 printf("TO DO: Partial linking\n");
3225 // Relocatable linking
3228 printf("TO DO: Relocatable linking\n");
3235 printf("Absolute linking (%s)\n", (cflag ? "COF" : "ABS"));
3238 printf("Header magic is 0x%04X\n", (unsigned int)header->magic);
3240 if (WriteOutputFile(header))
3244 // Display the loaded symbols map
3246 if (ShowSymbolLoadMap(header))
3249 // Display segment size summary
3253 printf("+---------+----------+----------+----------+\n");
3254 printf("| Segment | TEXT | DATA | BSS |\n");
3255 printf("| Sizes |----------+----------+----------|\n");
3256 printf("| (Hex) | %8X | %8X | %8X |\n", (unsigned int)header->tsize, (unsigned int)header->dsize, (unsigned int)header->bsize);
3257 printf("+---------+----------+----------+----------+\n\n");