2 // RMAC - Reboot's Macro Assembler for all Atari computers
3 // OBJECT.C - Writing Object Files
4 // Copyright (C) 199x Landon Dyer, 2011-2020 Reboot and Friends
5 // RMAC derived from MADMAC v1.07 Written by Landon Dyer, 1986
6 // Source utilised with the kind permission of Landon Dyer
22 uint32_t symsize = 0; // Size of BSD/ELF symbol table
23 uint32_t strindx = 0x00000004; // BSD/ELF string table index
24 uint8_t * strtable; // Pointer to the symbol string table
25 uint8_t * objImage; // Global object image pointer
26 int elfHdrNum[9] = { 0, 0, 0, 0, 0, 0, 0, 0, 0 };
29 static uint16_t tdb_tab[] = {
31 AL_TEXT, // TEXT segment based
32 AL_DATA, 0, // DATA segment based
33 AL_BSS // BSS segment based
36 uint32_t PRGFLAGS; /* PRGFLAGS as defined in Atari Compendium Chapter 2
37 Definition Bit(s) Meaning
38 --------------- ------- --------------------------------------------------------
39 PF_FASTLOAD 0 If set, clear only the BSS area on program load,
40 otherwise clear the entire heap.
41 PF_TTRAMLOAD 1 If set, the program may be loaded into alternative RAM,
42 otherwise it must be loaded into standard RAM.
43 PF_TTRAMMEM 2 If set, the program's Malloc() requests may be satisfied
44 from alternative RAM, otherwise they must be satisfied
47 See left. 4 & 5 If these bits are set to 0 (PF_PRIVATE), the processes'
48 entire memory space will be considered private
49 (when memory protection is enabled).If these bits are
50 set to 1 (PF_GLOBAL), the processes' entire memory space
51 will be readable and writable by any process (i.e.
52 global). If these bits are set to 2 (PF_SUPERVISOR), the
53 processes' entire memory space will only be readable and
54 writable by itself and any other process in supervisor
55 mode.If these bits are set to 3 (PF_READABLE), the
56 processes' entire memory space will be readable by any
57 application but only writable by itself.
58 - 6-15 Currently unused
61 // Internal function prototypes
62 static void WriteLOD(void);
63 static void WriteP56(void);
67 // Add entry to symbol table (in ALCYON mode)
68 // If 'globflag' is 1, make the symbol global
69 // If in .PRG mode, adjust symbol values for fake link
71 uint8_t * AddSymEntry(register uint8_t * buf, SYM * sym, int globflag)
73 // Copy symbol name to buffer (first 8 chars or less)
74 register uint8_t * s = sym->sname;
78 for(i=0; i<8 && *s; i++)
84 register uint16_t w1 = sym->sattr;
85 register uint16_t w = AL_DEFINED | tdb_tab[w1 & TDB];
89 // Extended symbol - Check to see if symbol is larger than 8 characters
90 // and write an extra 14 characters where the next symbol would be.
91 // Modify the flag word for this
94 //printf("%s '%i' - will write extended symbol\n", sym->sname,s[0]);
95 uint8_t *buf2 = buf + 6;
97 for(i=8; i<8+14 && *s; i++)
110 // Construct and deposit flag word
112 // o all symbols are AL_DEFINED
113 // o install T/D/B/A base
114 // o install 'equated'
115 // o commons (COMMON) are AL_EXTERN, but not BSS
116 // o exports (DEFINED) are AL_GLOBAL
117 // o imports (~DEFINED) are AL_EXTERN
119 if (w1 & EQUATED) // Equated
124 w |= AL_EXTERN | AL_GLOBAL; // Common symbol
125 w &= ~AL_BSS; // They're not BSS in Alcyon object files
130 if (globflag) // Export the symbol
134 w |= AL_EXTERN; // Imported symbol
138 register uint32_t z = (uint32_t)sym->svalue;
140 if (prg_flag) // Relocate value in .PRG segment
145 z += sect[TEXT].sloc;
148 z += sect[DATA].sloc;
151 SETBE32(buf, 0, z); // Deposit symbol value
162 // Add an entry to the BSD symbol table
164 uint8_t * AddBSDSymEntry(uint8_t * buf, SYM * sym, int globflag)
166 chptr = buf; // Point to buffer for depositing longs
167 D_long(strindx); // Deposit the symbol string index
169 uint16_t w1 = sym->sattr; // Obtain symbol attributes
170 uint32_t z = 0; // Initialize resulting symbol flags
174 z = 0x02000000; // Set equated flag
177 // If a symbol is both EQUd and flagged as TBD then we let
178 // the later take precedence. Otherwise the linker will not even
179 // bother trying to relocate the address during link time
183 case TEXT: z = 0x04000000; break; // Set TEXT segment flag
184 case DATA: z = 0x06000000; break; // Set DATA segment flag
185 case BSS : z = 0x08000000; break; // Set BSS segment flag
189 z |= 0x01000000; // Set global flag if requested
191 D_long(z); // Deposit symbol attribute
192 z = sym->svalue; // Obtain symbol value
194 if (w1 & (DATA | BSS))
195 z += sect[TEXT].sloc; // If DATA or BSS add TEXT segment size
198 z += sect[DATA].sloc; // If BSS add DATA segment size
200 D_long(z); // Deposit symbol value
201 strcpy(strtable + strindx, sym->sname);
202 strindx += strlen(sym->sname) + 1; // Incr string index incl null terminate
203 buf += 12; // Increment buffer to next record
204 symsize += 12; // Increment symbol table size
211 // Add entry to ELF symbol table; if `globflag' is 1, make the symbol global
213 uint8_t * AddELFSymEntry(uint8_t * buf, SYM * sym, int globflag)
217 D_long(strindx); // st_name
218 D_long(sym->svalue); // st_value
219 D_long(0); // st_size
222 register WORD w1 = sym->sattr;
226 if (globflag) // Export the symbol
227 st_info |= 16; //STB_GLOBAL (1<<4)
229 else if (w1 & (GLOBAL | REFERENCED))
233 D_byte(0); // st_other
235 uint16_t st_shndx = 0xFFF1; // Assume absolute (equated) number
238 st_shndx = elfHdrNum[ES_TEXT];
240 st_shndx = elfHdrNum[ES_DATA];
242 st_shndx = elfHdrNum[ES_BSS];
244 st_shndx = 0; // Global, not absolute
248 strcpy(strtable + strindx, sym->sname);
249 strindx += strlen(sym->sname) + 1; // Incr string index incl null terminate
250 symsize += 0x10; // Increment symbol table size
257 // Helper function for ELF output
259 int DepositELFSectionHeader(uint8_t * ptr, uint32_t name, uint32_t type, uint32_t flags, uint32_t addr, uint32_t offset, uint32_t size, uint32_t link, uint32_t info, uint32_t addralign, uint32_t entsize)
278 // Deposit an entry in the Section Header string table
280 uint32_t DepositELFSHSTEntry(uint8_t ** pTable, const uint8_t * s)
283 printf("DepositELFSHSTEntry: s = \"%s\"\n", s);
285 uint32_t strSize = strlen(s);
287 *pTable += strSize + 1;
293 // Deposit a symbol table entry in the ELF Symbol Table
295 uint32_t DepositELFSymbol(uint8_t * ptr, uint32_t name, uint32_t addr, uint32_t size, uint8_t info, uint8_t other, uint16_t shndx)
310 // Write an object file to the passed in file descriptor
311 // N.B.: Return value is ignored...
313 int WriteObject(int fd)
315 LONG tds; // TEXT & DATA segment size
316 int i; // Temporary int
317 CHUNK * cp; // Chunk (for gather)
318 uint8_t * buf; // Scratch area
319 uint8_t * p; // Temporary ptr
320 LONG trsize, drsize; // Size of relocations
321 uint32_t unused; // For supressing 'write' warnings
325 printf("TEXT segment: %d bytes\n", sect[TEXT].sloc);
326 printf("DATA segment: %d bytes\n", sect[DATA].sloc);
327 printf("BSS segment: %d bytes\n", sect[BSS].sloc);
330 // Write requested object file...
331 if ((obj_format == BSD) || ((obj_format == ALCYON) && (prg_flag == 0)))
335 // Force BSD format (if it was ALCYON format)
340 printf("Total : %d bytes\n", sect[TEXT].sloc + sect[DATA].sloc + sect[BSS].sloc);
343 sy_assign(NULL, NULL); // Assign index numbers to the symbols
344 tds = sect[TEXT].sloc + sect[DATA].sloc; // Get size of TEXT and DATA segment
345 buf = malloc(0x800000); // Allocate 8MB object file image memory
349 error("cannot allocate object file memory (in BSD mode)");
353 memset(buf, 0, 0x800000); // Clear allocated memory
354 objImage = buf; // Set global object image pointer
355 strtable = malloc(0x200000); // Allocate 2MB string table buffer
357 if (strtable == NULL)
360 error("cannot allocate string table memory (in BSD mode)");
364 memset(strtable, 0, 0x200000); // Clear allocated memory
366 // Build object file header
367 chptr = buf; // Base of header (for D_foo macros)
370 D_long(0x00000107); // Magic number
371 D_long(sect[TEXT].sloc); // TEXT size
372 D_long(sect[DATA].sloc); // DATA size
373 D_long(sect[BSS].sloc); // BSS size
374 D_long(0x00000000); // Symbol size
375 D_long(0x00000000); // First entry (0L)
376 D_long(0x00000000); // TEXT relocation size
377 D_long(0x00000000); // DATA relocation size
379 // Construct TEXT and DATA segments (without relocation changes)
380 p = buf + BSDHDRSIZE;
382 for(i=TEXT; i<=DATA; i++)
384 for(cp=sect[i].sfcode; cp!=NULL; cp=cp->chnext)
386 memcpy(p, cp->chptr, cp->ch_size);
391 // Do relocation tables (and make changes to segment data)
392 p = buf + BSDHDRSIZE + tds; // Move obj image ptr to reloc info
393 trsize = MarkBSDImage(p, tds, sect[TEXT].sloc, TEXT);// Do TEXT relocation table
394 chptr = buf + 0x18; // Point to relocation hdr entry
395 D_long(trsize); // Write the relocation table size
397 // Move obj image ptr to reloc info
398 p = buf + BSDHDRSIZE + tds + trsize;
399 drsize = MarkBSDImage(p, tds, sect[TEXT].sloc, DATA);// Do DATA relocation table
400 chptr = buf + 0x1C; // Point to relocation hdr entry
401 D_long(drsize); // Write the relocation table size
403 // Point to start of symbol table
404 p = buf + BSDHDRSIZE + tds + trsize + drsize;
405 sy_assign(p, AddBSDSymEntry); // Build symbol and string tables
406 chptr = buf + 0x10; // Point to sym table size hdr entry
407 D_long(symsize); // Write the symbol table size
409 // Point to string table
410 p = buf + BSDHDRSIZE + tds + trsize + drsize + symsize;
411 memcpy(p, strtable, strindx); // Copy string table to object image
412 chptr = p; // Point to string table size long
413 D_long(strindx); // Write string table size
415 // Write the BSD object file from the object image buffer
416 unused = write(fd, buf, BSDHDRSIZE + tds + trsize + drsize + symsize + strindx + 4);
420 printf("TextRel size: %d bytes\n", trsize);
421 printf("DataRel size: %d bytes\n", drsize);
426 free(strtable); // Free allocated memory
427 free(buf); // Free allocated memory
430 else if (obj_format == ALCYON)
437 printf("TOS header : 28 bytes\n");
439 printf("Total : %d bytes\n", sect[TEXT].sloc + sect[DATA].sloc + sect[BSS].sloc + (prg_flag ? 28 : 0));
442 // Assign index numbers to the symbols, get # of symbols (we assume
443 // that all symbols can potentially be extended, hence the x28)
444 // (To clarify: 28 bytes is the size of an extended symbol)
445 uint32_t symbolMaxSize = sy_assign(NULL, NULL) * 28;
447 // Alloc memory for header + text + data, symbol and relocation
448 // information construction.
449 tds = sect[TEXT].sloc + sect[DATA].sloc;
450 buf = malloc(HDRSIZE + tds + symbolMaxSize);
452 // Build object file header just before the text+data image
453 chptr = buf; // -> base of header
455 challoc = HDRSIZE + tds + symbolMaxSize;
456 D_word(0x601A); // 00 - magic number
457 D_long(sect[TEXT].sloc); // 02 - TEXT size
458 D_long(sect[DATA].sloc); // 06 - DATA size
459 D_long(sect[BSS].sloc); // 0A - BSS size
460 D_long(0); // 0E - symbol table size (filled later)
461 D_long(0); // 12 - stack size (unused)
462 D_long(PRGFLAGS); // 16 - PRGFLAGS
463 D_word(0); // 1A - relocation information exists
465 // Construct text and data segments; fixup relocatable longs in .PRG
466 // mode; finally write the header + text + data
469 for(i=TEXT; i<=DATA; i++)
471 for(cp=sect[i].sfcode; cp!=NULL; cp=cp->chnext)
473 memcpy(p, cp->chptr, cp->ch_size);
478 // Do a first pass on the Alcyon image, if in PRG mode
480 MarkImage(buf + HDRSIZE, tds, sect[TEXT].sloc, 0);
482 // Construct symbol table and update the header entry, if necessary
485 // sy_assign with AddSymEntry updates symsize (stays 0 otherwise)
486 sy_assign(buf + HDRSIZE + tds, AddSymEntry);
487 chptr = buf + 0x0E; // Point to symbol table size entry
491 printf("Symbol table: %d bytes\n", symsize);
494 // Write out the header + text & data + symbol table (if any)
495 unused = write(fd, buf, HDRSIZE + tds + symsize);
497 // Construct and write relocation information; the size of it changes if
498 // we're writing a RELMODed executable. N.B.: Destroys buffer!
499 tds = MarkImage(buf, tds, sect[TEXT].sloc, 1);
500 unused = write(fd, buf, tds);
502 else if (obj_format == ELF)
504 // Allocate 6MB object file image memory
505 buf = malloc(0x600000);
509 error("cannot allocate object file memory (in ELF mode)");
513 memset(buf, 0, 0x600000);
514 objImage = buf; // Set global object image pointer
515 strtable = malloc(0x200000); // Allocate 2MB string table buffer
517 if (strtable == NULL)
519 error("cannot allocate string table memory (in ELF mode)");
523 memset(strtable, 0, 0x200000);
525 // This is pretty much a first pass at this shite, so there's room for
527 uint8_t headers[4 * 10 * 10]; // (DWORD * 10) = 1 hdr, 10 entries
529 uint8_t shstrtab[128]; // The section header string table proper
530 uint32_t shstTab[9]; // Index into shstrtab for strings
531 uint8_t * shstPtr = shstrtab; // Temp pointer
532 uint32_t shstSize = 0;
533 int numEntries = 4; // There are always at *least* 4 sections
534 int shstIndex = 1; // The section where the shstrtab lives
535 int elfSize = 0; // Size of the ELF object
536 // Clear the header numbers
537 memset(elfHdrNum, 0, 9 * sizeof(int));
540 // First step is to see what sections need to be made; we also
541 // construct the section header string table here at the same time.
543 shstTab[ES_NULL] = shstSize;
544 shstSize += DepositELFSHSTEntry(&shstPtr, "");
545 shstTab[ES_SHSTRTAB] = shstSize;
546 shstSize += DepositELFSHSTEntry(&shstPtr, ".shstrtab");
547 shstTab[ES_SYMTAB] = shstSize;
548 shstSize += DepositELFSHSTEntry(&shstPtr, ".symtab");
549 shstTab[ES_STRTAB] = shstSize;
550 shstSize += DepositELFSHSTEntry(&shstPtr, ".strtab");
552 if (sect[TEXT].sloc > 0)
554 elfHdrNum[ES_TEXT] = shstIndex;
555 shstTab[ES_TEXT] = shstSize;
556 shstSize += DepositELFSHSTEntry(&shstPtr, ".text");
561 if (sect[DATA].sloc > 0)
563 elfHdrNum[ES_DATA] = shstIndex;
564 shstTab[ES_DATA] = shstSize;
565 shstSize += DepositELFSHSTEntry(&shstPtr, ".data");
570 if (sect[BSS].sloc > 0)
572 elfHdrNum[ES_BSS] = shstIndex;
573 shstTab[ES_BSS] = shstSize;
574 shstSize += DepositELFSHSTEntry(&shstPtr, ".bss");
579 if (sect[TEXT].relocs > 0)
581 elfHdrNum[ES_RELATEXT] = shstIndex;
582 shstTab[ES_RELATEXT] = shstSize;
583 shstSize += DepositELFSHSTEntry(&shstPtr, ".relaTEXT");
588 if (sect[DATA].relocs > 0)
590 elfHdrNum[ES_RELADATA] = shstIndex;
591 shstTab[ES_RELADATA] = shstSize;
592 shstSize += DepositELFSHSTEntry(&shstPtr, ".relaDATA");
597 elfHdrNum[ES_SHSTRTAB] = shstIndex + 0;
598 elfHdrNum[ES_SYMTAB] = shstIndex + 1;
599 elfHdrNum[ES_STRTAB] = shstIndex + 2;
602 printf("ELF shstrtab size: %i bytes. Entries:\n", shstSize);
603 for(int j=0; j<i; j++)
604 printf("\"%s\"\n", shstrtab + shstTab[j]);
607 // Construct ELF header
608 // If you want to make any sense out of this you'd better take a look
609 // at Executable and Linkable Format on Wikipedia.
613 D_long(0x7F454C46); // 00 - "<7F>ELF" Magic Number
614 D_byte(0x01); // 04 - 32 vs 64 (1 = 32, 2 = 64)
615 D_byte(0x02); // 05 - Endianness (1 = LE, 2 = BE)
616 D_byte(0x01); // 06 - Original version of ELF (set to 1)
617 D_byte(0x00); // 07 - Target OS ABI (0 = System V)
618 D_byte(0x00); // 08 - ABI Extra (unneeded)
619 D_byte(0x00); // 09 - Pad bytes
622 D_word(0x01); // 10 - ELF Type (1 = relocatable)
623 D_word(0x04); // 12 - Architecture (EM_68K = 4, Motorola M68K family)
624 D_long(0x01); // 14 - Version (1 = original ELF)
625 D_long(0x00); // 18 - Entry point virtual address (unneeded)
626 D_long(0x00); // 1C - Program header table offset (unneeded)
627 D_long(0x00); // 20 - Section header table offset (to be determined)
631 // Specifically for 68000 CPU
632 D_long(0x01000000) // 24 - Processor-specific flags - EF_M68K_M68000
636 // CPUs other than 68000 (68020...)
637 D_long(0); // 24 - Processor-specific flags (ISA dependent)
640 D_word(0x0034); // 28 - ELF header size in bytes
641 D_word(0); // 2A - Program header table entry size
642 D_word(0); // 2C - Program header table entry count
643 D_word(0x0028); // 2E - Section header entry size - 40 bytes for ELF32
644 D_word(numEntries); // 30 - Section header table entry count
645 D_word(shstIndex); // 32 - Section header string table index
649 // Deposit section header 0 (NULL)
650 headerSize += DepositELFSectionHeader(headers + headerSize, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
652 int textLoc = elfSize;
654 // Construct TEXT section, if any
655 if (sect[TEXT].sloc > 0)
657 headerSize += DepositELFSectionHeader(headers + headerSize, shstTab[ES_TEXT], 1, 6, 0, elfSize, sect[TEXT].sloc, 0, 0, largestAlign[0], 0);
659 for(CHUNK * cp=sect[TEXT].sfcode; cp!=NULL; cp=cp->chnext)
661 memcpy(buf + elfSize, cp->chptr, cp->ch_size);
662 elfSize += cp->ch_size;
665 // Pad for next section (LONG boundary)
666 elfSize = (elfSize + 3) & ~3;
669 int dataLoc = elfSize;
671 // Construct DATA section, if any
672 if (sect[DATA].sloc > 0)
674 headerSize += DepositELFSectionHeader(headers + headerSize, shstTab[ES_DATA], 1, 3, 0, elfSize, sect[DATA].sloc, 0, 0, largestAlign[1], 0);
676 for(CHUNK * cp=sect[DATA].sfcode; cp!=NULL; cp=cp->chnext)
678 memcpy(buf + elfSize, cp->chptr, cp->ch_size);
679 elfSize += cp->ch_size;
682 // Pad for next section (LONG boundary)
683 elfSize = (elfSize + 3) & ~3;
686 // Construct BSS section, if any
687 if (sect[BSS].sloc > 0)
689 headerSize += DepositELFSectionHeader(headers + headerSize, shstTab[ES_BSS], 8, 3, 0, elfSize, sect[BSS].sloc, 0, 0, largestAlign[2], 0);
692 int textrelLoc = headerSize;
694 // Add headers for relocated sections, if any...
695 if (sect[TEXT].relocs > 0)
696 headerSize += DepositELFSectionHeader(headers + headerSize, shstTab[ES_RELATEXT], 4, 0x00, 0, 0, 0, elfHdrNum[ES_SYMTAB], elfHdrNum[ES_TEXT], 4, 0x0C);
698 int datarelLoc = headerSize;
700 if (sect[DATA].relocs > 0)
701 headerSize += DepositELFSectionHeader(headers + headerSize, shstTab[ES_RELADATA], 4, 0x40, 0, 0, 0, elfHdrNum[ES_SYMTAB], elfHdrNum[ES_DATA], 4, 0x0C);
704 headerSize += DepositELFSectionHeader(headers + headerSize, shstTab[ES_SHSTRTAB], 3, 0, 0, elfSize, shstSize, 0, 0, 1, 0);
705 memcpy(buf + elfSize, shstrtab, shstSize);
707 // Pad for next section (LONG boundary)
708 elfSize = (elfSize + 3) & ~3;
710 // Add section headers
711 int headerLoc = elfSize;
712 chptr = buf + 0x20; // Set section header offset in ELF header
714 elfSize += (4 * 10) * numEntries;
716 // Add symbol table & string table
717 int symtabLoc = elfSize;
718 strindx = 0; // Make sure we start at the beginning...
719 elfSize += DepositELFSymbol(buf + elfSize, 0, 0, 0, 0, 0, 0);
724 if (sect[TEXT].sloc > 0)
726 elfSize += DepositELFSymbol(buf + elfSize, 0, 0, 0, 3, 0, elfHdrNum[ES_TEXT]);
730 if (sect[DATA].sloc > 0)
732 elfSize += DepositELFSymbol(buf + elfSize, 0, 0, 0, 3, 0, elfHdrNum[ES_DATA]);
736 if (sect[BSS].sloc > 0)
738 elfSize += DepositELFSymbol(buf + elfSize, 0, 0, 0, 3, 0, elfHdrNum[ES_BSS]);
742 int numSymbols = sy_assign_ELF(buf + elfSize, AddELFSymEntry);
743 elfSize += numSymbols * 0x10;
746 int strtabLoc = elfSize;
747 memcpy(buf + elfSize, strtable, strindx);
749 // Pad for next section (LONG boundary)
750 elfSize = (elfSize + 3) & ~3;
752 headerSize += DepositELFSectionHeader(headers + headerSize, shstTab[ES_SYMTAB], 2, 0, 0, symtabLoc, (numSymbols + extraSyms) * 0x10, shstIndex + 2, firstglobal + extraSyms, 4, 0x10);
753 headerSize += DepositELFSectionHeader(headers + headerSize, shstTab[ES_STRTAB], 3, 0, 0, strtabLoc, strindx, 0, 0, 1, 0);
755 // Add relocation tables, if any (no need to align after these, they're
756 // already on DWORD boundaries)
757 if (sect[TEXT].relocs > 0)
759 uint32_t textrelSize = CreateELFRelocationRecord(buf + elfSize, buf + textLoc, TEXT);
760 // Deposit offset & size, now that we know them
761 chptr = headers + textrelLoc + 0x10;
764 elfSize += textrelSize;
767 if (sect[DATA].relocs > 0)
769 uint32_t datarelSize = CreateELFRelocationRecord(buf + elfSize, buf + dataLoc, DATA);
770 // Deposit offset & size, now that we know them
771 chptr = headers + datarelLoc + 0x10;
774 elfSize += datarelSize;
777 // Copy headers into the object
778 memcpy(buf + headerLoc, headers, headerSize);
780 // Finally, write out the object
781 unused = write(fd, buf, elfSize);
783 // Free allocated memory
790 else if (obj_format == XEX)
792 // Just write the object file
795 else if (obj_format == P56 || obj_format == LOD)
797 // Allocate 6MB object file image memory
798 uint8_t * buf = malloc(0x600000);
801 return error("cannot allocate object file memory (in P56/LOD mode)");
803 // objImage = buf; // Set global object image pointer
805 memset(buf, 0, 0x600000); // Clear allocated memory
807 // Iterate through DSP ram buffers
808 chptr = buf; // -> base of header
812 if (obj_format == LOD)
817 // Write all the things \o/
818 unused = write(fd, buf, chptr - buf);
823 else if (obj_format == RAW)
827 return error("cannot output absolute binary without a starting address (.org or command line)");
830 // Alloc memory for text + data construction.
831 tds = sect[TEXT].sloc + sect[DATA].sloc;
835 // Construct text and data segments; fixup relocatable longs;
836 // finally write the text + data
839 objImage = buf; // Set global object image pointer
841 for (i = TEXT; i <= DATA; i++)
843 for (cp = sect[i].sfcode; cp != NULL; cp = cp->chnext)
845 memcpy(p, cp->chptr, cp->ch_size);
850 if (MarkABSImage(buf, tds, sect[TEXT].sloc, TEXT) != OK) // Do TEXT relocation table
854 if (MarkABSImage(buf, tds, sect[TEXT].sloc, DATA) != OK) // Do DATA relocation table
859 // Write out the header + text & data + symbol table (if any)
860 unused = write(fd, buf, tds);
867 static void WriteLOD(void)
869 D_printf("_START %s 0000 0000 0000 RMAC %01i.%01i.%01i\n\n", firstfname, MAJOR, MINOR, PATCH);
871 for(DSP_ORG * l=&dsp_orgmap[0]; l<dsp_currentorg; l++)
873 if (l->end != l->start)
877 case ORG_P: D_printf("_DATA P %.4X\n", l->orgadr); break;
878 case ORG_X: D_printf("_DATA X %.4X\n", l->orgadr); break;
879 case ORG_Y: D_printf("_DATA Y %.4X\n", l->orgadr); break;
880 case ORG_L: D_printf("_DATA L %.4X\n", l->orgadr); break;
882 error("Internal error: unknown DSP56001 org'd section");
886 CHUNK * cp = l->chunk;
887 uint8_t * p_chunk = l->start;
888 uint8_t * p_chunk_end = p_chunk;
891 while (p_chunk_end != l->end)
893 if (l->end < (cp->chptr + cp->ch_size) && l->end > cp->chptr)
895 // If the end of the section is inside the current chunk, just dump everything and stop
896 p_chunk_end = l->end;
900 // If the end of the section is not inside the current chunk, just dump everything from the current chunk and move on to the next
901 p_chunk_end = cp->chptr + cp->ch_size;
904 uint32_t count = (uint32_t)(p_chunk_end - p_chunk);
906 for(uint32_t i=0; i<count; i+=3)
910 D_printf("%.6X ", (((p_chunk[0] << 8) | p_chunk[1]) << 8) | p_chunk[2]);
914 D_printf("%.6X\n", (((p_chunk[0] << 8) | p_chunk[1]) << 8) | p_chunk[2]);
921 cp = cp->chnext; // Advance chunk
924 p_chunk = cp->chptr; // Set dump pointer to start of this chunk
932 // Dump the symbol table into the buf
935 D_printf("\n_END %.4X\n", dsp_orgmap[0].orgadr);
939 static void WriteP56(void)
941 for(DSP_ORG * l=&dsp_orgmap[0]; l<dsp_currentorg; l++)
943 if (l->end == l->start)
946 if ((l->memtype < ORG_P) || (l->memtype > ORG_L))
948 error("Internal error: unknown DSP56001 org'd section");
952 CHUNK * cp = l->chunk;
953 uint8_t * p_chunk = l->start;
954 uint8_t * p_chunk_end = p_chunk;
956 // Memory type (P, X, Y or L)
959 // Chunk start address (in DSP words)
962 // Chunk length (in DSP words)
963 // We'll fill this field after we write the chunk so we can calculate
964 // how long it is (so if the chunk is split into different CHUNKs we
965 // can deal with this during copy)
966 uint8_t * p_buf_len = chptr;
970 uint32_t chunk_size = 0;
972 while (p_chunk_end != l->end)
974 if (l->end < (cp->chptr + cp->ch_size) && l->end > cp->chptr)
976 // If the end of the section is inside the current chunk, just
977 // dump everything and stop
978 p_chunk_end = l->end;
982 // If the end of the section is not inside the current chunk,
983 // just dump everything from the current chunk and move on to
985 p_chunk_end = cp->chptr + cp->ch_size;
988 uint32_t current_chunk_size = p_chunk_end - p_chunk;
989 chunk_size += current_chunk_size;
990 memcpy(chptr, p_chunk, current_chunk_size);
991 chptr += current_chunk_size;
993 cp = cp->chnext; // Advance chunk
996 p_chunk = cp->chptr; // Set dump pointer to start of this chunk
999 // Now we can mark the chunk's length (DSP word size is 24-bits, so
1000 // the byte count needs to be divided by 3)
1001 SETBE24(p_buf_len, chunk_size / 3);