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
180 case TEXT: z = 0x04000000; break; // Set TEXT segment flag
181 case DATA: z = 0x06000000; break; // Set DATA segment flag
182 case BSS : z = 0x08000000; break; // Set BSS segment flag
187 z |= 0x01000000; // Set global flag if requested
189 D_long(z); // Deposit symbol attribute
190 z = sym->svalue; // Obtain symbol value
192 if (w1 & (DATA | BSS))
193 z += sect[TEXT].sloc; // If DATA or BSS add TEXT segment size
196 z += sect[DATA].sloc; // If BSS add DATA segment size
198 D_long(z); // Deposit symbol value
199 strcpy(strtable + strindx, sym->sname);
200 strindx += strlen(sym->sname) + 1; // Incr string index incl null terminate
201 buf += 12; // Increment buffer to next record
202 symsize += 12; // Increment symbol table size
209 // Add entry to ELF symbol table; if `globflag' is 1, make the symbol global
211 uint8_t * AddELFSymEntry(uint8_t * buf, SYM * sym, int globflag)
215 D_long(strindx); // st_name
216 D_long(sym->svalue); // st_value
217 D_long(0); // st_size
220 register WORD w1 = sym->sattr;
224 if (globflag) // Export the symbol
225 st_info |= 16; //STB_GLOBAL (1<<4)
227 else if (w1 & (GLOBAL | REFERENCED))
231 D_byte(0); // st_other
233 uint16_t st_shndx = 0xFFF1; // Assume absolute (equated) number
236 st_shndx = elfHdrNum[ES_TEXT];
238 st_shndx = elfHdrNum[ES_DATA];
240 st_shndx = elfHdrNum[ES_BSS];
242 st_shndx = 0; // Global, not absolute
246 strcpy(strtable + strindx, sym->sname);
247 strindx += strlen(sym->sname) + 1; // Incr string index incl null terminate
248 symsize += 0x10; // Increment symbol table size
255 // Helper function for ELF output
257 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)
276 // Deposit an entry in the Section Header string table
278 uint32_t DepositELFSHSTEntry(uint8_t ** pTable, const uint8_t * s)
281 printf("DepositELFSHSTEntry: s = \"%s\"\n", s);
283 uint32_t strSize = strlen(s);
285 *pTable += strSize + 1;
291 // Deposit a symbol table entry in the ELF Symbol Table
293 uint32_t DepositELFSymbol(uint8_t * ptr, uint32_t name, uint32_t addr, uint32_t size, uint8_t info, uint8_t other, uint16_t shndx)
308 // Write an object file to the passed in file descriptor
309 // N.B.: Return value is ignored...
311 int WriteObject(int fd)
313 LONG tds; // TEXT & DATA segment size
314 int i; // Temporary int
315 CHUNK * cp; // Chunk (for gather)
316 uint8_t * buf; // Scratch area
317 uint8_t * p; // Temporary ptr
318 LONG trsize, drsize; // Size of relocations
319 uint32_t unused; // For supressing 'write' warnings
323 printf("TEXT segment: %d bytes\n", sect[TEXT].sloc);
324 printf("DATA segment: %d bytes\n", sect[DATA].sloc);
325 printf("BSS segment: %d bytes\n", sect[BSS].sloc);
328 // Write requested object file...
329 if ((obj_format == BSD) || ((obj_format == ALCYON) && (prg_flag == 0)))
333 // Force BSD format (if it was ALCYON format)
338 printf("Total : %d bytes\n", sect[TEXT].sloc + sect[DATA].sloc + sect[BSS].sloc);
341 sy_assign(NULL, NULL); // Assign index numbers to the symbols
342 tds = sect[TEXT].sloc + sect[DATA].sloc; // Get size of TEXT and DATA segment
343 buf = malloc(0x800000); // Allocate 8MB object file image memory
347 error("cannot allocate object file memory (in BSD mode)");
351 memset(buf, 0, 0x800000); // Clear allocated memory
352 objImage = buf; // Set global object image pointer
353 strtable = malloc(0x200000); // Allocate 2MB string table buffer
355 if (strtable == NULL)
358 error("cannot allocate string table memory (in BSD mode)");
362 memset(strtable, 0, 0x200000); // Clear allocated memory
364 // Build object file header
365 chptr = buf; // Base of header (for D_foo macros)
368 D_long(0x00000107); // Magic number
369 D_long(sect[TEXT].sloc); // TEXT size
370 D_long(sect[DATA].sloc); // DATA size
371 D_long(sect[BSS].sloc); // BSS size
372 D_long(0x00000000); // Symbol size
373 D_long(0x00000000); // First entry (0L)
374 D_long(0x00000000); // TEXT relocation size
375 D_long(0x00000000); // DATA relocation size
377 // Construct TEXT and DATA segments (without relocation changes)
378 p = buf + BSDHDRSIZE;
380 for(i=TEXT; i<=DATA; i++)
382 for(cp=sect[i].sfcode; cp!=NULL; cp=cp->chnext)
384 memcpy(p, cp->chptr, cp->ch_size);
389 // Do relocation tables (and make changes to segment data)
390 p = buf + BSDHDRSIZE + tds; // Move obj image ptr to reloc info
391 trsize = MarkBSDImage(p, tds, sect[TEXT].sloc, TEXT);// Do TEXT relocation table
392 chptr = buf + 0x18; // Point to relocation hdr entry
393 D_long(trsize); // Write the relocation table size
395 // Move obj image ptr to reloc info
396 p = buf + BSDHDRSIZE + tds + trsize;
397 drsize = MarkBSDImage(p, tds, sect[TEXT].sloc, DATA);// Do DATA relocation table
398 chptr = buf + 0x1C; // Point to relocation hdr entry
399 D_long(drsize); // Write the relocation table size
401 // Point to start of symbol table
402 p = buf + BSDHDRSIZE + tds + trsize + drsize;
403 sy_assign(p, AddBSDSymEntry); // Build symbol and string tables
404 chptr = buf + 0x10; // Point to sym table size hdr entry
405 D_long(symsize); // Write the symbol table size
407 // Point to string table
408 p = buf + BSDHDRSIZE + tds + trsize + drsize + symsize;
409 memcpy(p, strtable, strindx); // Copy string table to object image
410 chptr = p; // Point to string table size long
411 D_long(strindx); // Write string table size
413 // Write the BSD object file from the object image buffer
414 unused = write(fd, buf, BSDHDRSIZE + tds + trsize + drsize + symsize + strindx + 4);
418 printf("TextRel size: %d bytes\n", trsize);
419 printf("DataRel size: %d bytes\n", drsize);
424 free(strtable); // Free allocated memory
425 free(buf); // Free allocated memory
428 else if (obj_format == ALCYON)
435 printf("TOS header : 28 bytes\n");
437 printf("Total : %d bytes\n", sect[TEXT].sloc + sect[DATA].sloc + sect[BSS].sloc + (prg_flag ? 28 : 0));
440 // Assign index numbers to the symbols, get # of symbols (we assume
441 // that all symbols can potentially be extended, hence the x28)
442 // (To clarify: 28 bytes is the size of an extended symbol)
443 uint32_t symbolMaxSize = sy_assign(NULL, NULL) * 28;
445 // Alloc memory for header + text + data, symbol and relocation
446 // information construction.
447 tds = sect[TEXT].sloc + sect[DATA].sloc;
448 buf = malloc(HDRSIZE + tds + symbolMaxSize);
450 // Build object file header just before the text+data image
451 chptr = buf; // -> base of header
453 challoc = HDRSIZE + tds + symbolMaxSize;
454 D_word(0x601A); // 00 - magic number
455 D_long(sect[TEXT].sloc); // 02 - TEXT size
456 D_long(sect[DATA].sloc); // 06 - DATA size
457 D_long(sect[BSS].sloc); // 0A - BSS size
458 D_long(0); // 0E - symbol table size (filled later)
459 D_long(0); // 12 - stack size (unused)
460 D_long(PRGFLAGS); // 16 - PRGFLAGS
461 D_word(0); // 1A - relocation information exists
463 // Construct text and data segments; fixup relocatable longs in .PRG
464 // mode; finally write the header + text + data
467 for(i=TEXT; i<=DATA; i++)
469 for(cp=sect[i].sfcode; cp!=NULL; cp=cp->chnext)
471 memcpy(p, cp->chptr, cp->ch_size);
476 // Do a first pass on the Alcyon image, if in PRG mode
478 MarkImage(buf + HDRSIZE, tds, sect[TEXT].sloc, 0);
480 // Construct symbol table and update the header entry, if necessary
483 // sy_assign with AddSymEntry updates symsize (stays 0 otherwise)
484 sy_assign(buf + HDRSIZE + tds, AddSymEntry);
485 chptr = buf + 0x0E; // Point to symbol table size entry
489 printf("Symbol table: %d bytes\n", symsize);
492 // Write out the header + text & data + symbol table (if any)
493 unused = write(fd, buf, HDRSIZE + tds + symsize);
495 // Construct and write relocation information; the size of it changes if
496 // we're writing a RELMODed executable. N.B.: Destroys buffer!
497 tds = MarkImage(buf, tds, sect[TEXT].sloc, 1);
498 unused = write(fd, buf, tds);
500 else if (obj_format == ELF)
502 // Allocate 6MB object file image memory
503 buf = malloc(0x600000);
507 error("cannot allocate object file memory (in ELF mode)");
511 memset(buf, 0, 0x600000);
512 objImage = buf; // Set global object image pointer
513 strtable = malloc(0x200000); // Allocate 2MB string table buffer
515 if (strtable == NULL)
517 error("cannot allocate string table memory (in ELF mode)");
521 memset(strtable, 0, 0x200000);
523 // This is pretty much a first pass at this shite, so there's room for
525 uint8_t headers[4 * 10 * 10]; // (DWORD * 10) = 1 hdr, 10 entries
527 uint8_t shstrtab[128]; // The section header string table proper
528 uint32_t shstTab[9]; // Index into shstrtab for strings
529 uint8_t * shstPtr = shstrtab; // Temp pointer
530 uint32_t shstSize = 0;
531 int numEntries = 4; // There are always at *least* 4 sections
532 int shstIndex = 1; // The section where the shstrtab lives
533 int elfSize = 0; // Size of the ELF object
534 // Clear the header numbers
535 memset(elfHdrNum, 0, 9 * sizeof(int));
538 // First step is to see what sections need to be made; we also
539 // construct the section header string table here at the same time.
541 shstTab[ES_NULL] = shstSize;
542 shstSize += DepositELFSHSTEntry(&shstPtr, "");
543 shstTab[ES_SHSTRTAB] = shstSize;
544 shstSize += DepositELFSHSTEntry(&shstPtr, ".shstrtab");
545 shstTab[ES_SYMTAB] = shstSize;
546 shstSize += DepositELFSHSTEntry(&shstPtr, ".symtab");
547 shstTab[ES_STRTAB] = shstSize;
548 shstSize += DepositELFSHSTEntry(&shstPtr, ".strtab");
550 if (sect[TEXT].sloc > 0)
552 elfHdrNum[ES_TEXT] = shstIndex;
553 shstTab[ES_TEXT] = shstSize;
554 shstSize += DepositELFSHSTEntry(&shstPtr, ".text");
559 if (sect[DATA].sloc > 0)
561 elfHdrNum[ES_DATA] = shstIndex;
562 shstTab[ES_DATA] = shstSize;
563 shstSize += DepositELFSHSTEntry(&shstPtr, ".data");
568 if (sect[BSS].sloc > 0)
570 elfHdrNum[ES_BSS] = shstIndex;
571 shstTab[ES_BSS] = shstSize;
572 shstSize += DepositELFSHSTEntry(&shstPtr, ".bss");
577 if (sect[TEXT].relocs > 0)
579 elfHdrNum[ES_RELATEXT] = shstIndex;
580 shstTab[ES_RELATEXT] = shstSize;
581 shstSize += DepositELFSHSTEntry(&shstPtr, ".relaTEXT");
586 if (sect[DATA].relocs > 0)
588 elfHdrNum[ES_RELADATA] = shstIndex;
589 shstTab[ES_RELADATA] = shstSize;
590 shstSize += DepositELFSHSTEntry(&shstPtr, ".relaDATA");
595 elfHdrNum[ES_SHSTRTAB] = shstIndex + 0;
596 elfHdrNum[ES_SYMTAB] = shstIndex + 1;
597 elfHdrNum[ES_STRTAB] = shstIndex + 2;
600 printf("ELF shstrtab size: %i bytes. Entries:\n", shstSize);
601 for(int j=0; j<i; j++)
602 printf("\"%s\"\n", shstrtab + shstTab[j]);
605 // Construct ELF header
606 // If you want to make any sense out of this you'd better take a look
607 // at Executable and Linkable Format on Wikipedia.
611 D_long(0x7F454C46); // 00 - "<7F>ELF" Magic Number
612 D_byte(0x01); // 04 - 32 vs 64 (1 = 32, 2 = 64)
613 D_byte(0x02); // 05 - Endianness (1 = LE, 2 = BE)
614 D_byte(0x01); // 06 - Original version of ELF (set to 1)
615 D_byte(0x00); // 07 - Target OS ABI (0 = System V)
616 D_byte(0x00); // 08 - ABI Extra (unneeded)
617 D_byte(0x00); // 09 - Pad bytes
620 D_word(0x01); // 10 - ELF Type (1 = relocatable)
621 D_word(0x04); // 12 - Architecture (EM_68K = 4, Motorola M68K family)
622 D_long(0x01); // 14 - Version (1 = original ELF)
623 D_long(0x00); // 18 - Entry point virtual address (unneeded)
624 D_long(0x00); // 1C - Program header table offset (unneeded)
625 D_long(0x00); // 20 - Section header table offset (to be determined)
629 // Specifically for 68000 CPU
630 D_long(0x01000000) // 24 - Processor-specific flags - EF_M68K_M68000
634 // CPUs other than 68000 (68020...)
635 D_long(0); // 24 - Processor-specific flags (ISA dependent)
638 D_word(0x0034); // 28 - ELF header size in bytes
639 D_word(0); // 2A - Program header table entry size
640 D_word(0); // 2C - Program header table entry count
641 D_word(0x0028); // 2E - Section header entry size - 40 bytes for ELF32
642 D_word(numEntries); // 30 - Section header table entry count
643 D_word(shstIndex); // 32 - Section header string table index
647 // Deposit section header 0 (NULL)
648 headerSize += DepositELFSectionHeader(headers + headerSize, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
650 int textLoc = elfSize;
652 // Construct TEXT section, if any
653 if (sect[TEXT].sloc > 0)
655 headerSize += DepositELFSectionHeader(headers + headerSize, shstTab[ES_TEXT], 1, 6, 0, elfSize, sect[TEXT].sloc, 0, 0, largestAlign[0], 0);
657 for(CHUNK * cp=sect[TEXT].sfcode; cp!=NULL; cp=cp->chnext)
659 memcpy(buf + elfSize, cp->chptr, cp->ch_size);
660 elfSize += cp->ch_size;
663 // Pad for next section (LONG boundary)
664 elfSize = (elfSize + 3) & ~3;
667 int dataLoc = elfSize;
669 // Construct DATA section, if any
670 if (sect[DATA].sloc > 0)
672 headerSize += DepositELFSectionHeader(headers + headerSize, shstTab[ES_DATA], 1, 3, 0, elfSize, sect[DATA].sloc, 0, 0, largestAlign[1], 0);
674 for(CHUNK * cp=sect[DATA].sfcode; cp!=NULL; cp=cp->chnext)
676 memcpy(buf + elfSize, cp->chptr, cp->ch_size);
677 elfSize += cp->ch_size;
680 // Pad for next section (LONG boundary)
681 elfSize = (elfSize + 3) & ~3;
684 // Construct BSS section, if any
685 if (sect[BSS].sloc > 0)
687 headerSize += DepositELFSectionHeader(headers + headerSize, shstTab[ES_BSS], 8, 3, 0, elfSize, sect[BSS].sloc, 0, 0, largestAlign[2], 0);
690 int textrelLoc = headerSize;
692 // Add headers for relocated sections, if any...
693 if (sect[TEXT].relocs > 0)
694 headerSize += DepositELFSectionHeader(headers + headerSize, shstTab[ES_RELATEXT], 4, 0x00, 0, 0, 0, elfHdrNum[ES_SYMTAB], elfHdrNum[ES_TEXT], 4, 0x0C);
696 int datarelLoc = headerSize;
698 if (sect[DATA].relocs > 0)
699 headerSize += DepositELFSectionHeader(headers + headerSize, shstTab[ES_RELADATA], 4, 0x40, 0, 0, 0, elfHdrNum[ES_SYMTAB], elfHdrNum[ES_DATA], 4, 0x0C);
702 headerSize += DepositELFSectionHeader(headers + headerSize, shstTab[ES_SHSTRTAB], 3, 0, 0, elfSize, shstSize, 0, 0, 1, 0);
703 memcpy(buf + elfSize, shstrtab, shstSize);
705 // Pad for next section (LONG boundary)
706 elfSize = (elfSize + 3) & ~3;
708 // Add section headers
709 int headerLoc = elfSize;
710 chptr = buf + 0x20; // Set section header offset in ELF header
712 elfSize += (4 * 10) * numEntries;
714 // Add symbol table & string table
715 int symtabLoc = elfSize;
716 strindx = 0; // Make sure we start at the beginning...
717 elfSize += DepositELFSymbol(buf + elfSize, 0, 0, 0, 0, 0, 0);
722 if (sect[TEXT].sloc > 0)
724 elfSize += DepositELFSymbol(buf + elfSize, 0, 0, 0, 3, 0, elfHdrNum[ES_TEXT]);
728 if (sect[DATA].sloc > 0)
730 elfSize += DepositELFSymbol(buf + elfSize, 0, 0, 0, 3, 0, elfHdrNum[ES_DATA]);
734 if (sect[BSS].sloc > 0)
736 elfSize += DepositELFSymbol(buf + elfSize, 0, 0, 0, 3, 0, elfHdrNum[ES_BSS]);
740 int numSymbols = sy_assign_ELF(buf + elfSize, AddELFSymEntry);
741 elfSize += numSymbols * 0x10;
744 int strtabLoc = elfSize;
745 memcpy(buf + elfSize, strtable, strindx);
747 // Pad for next section (LONG boundary)
748 elfSize = (elfSize + 3) & ~3;
750 headerSize += DepositELFSectionHeader(headers + headerSize, shstTab[ES_SYMTAB], 2, 0, 0, symtabLoc, (numSymbols + extraSyms) * 0x10, shstIndex + 2, firstglobal + extraSyms, 4, 0x10);
751 headerSize += DepositELFSectionHeader(headers + headerSize, shstTab[ES_STRTAB], 3, 0, 0, strtabLoc, strindx, 0, 0, 1, 0);
753 // Add relocation tables, if any (no need to align after these, they're
754 // already on DWORD boundaries)
755 if (sect[TEXT].relocs > 0)
757 uint32_t textrelSize = CreateELFRelocationRecord(buf + elfSize, buf + textLoc, TEXT);
758 // Deposit offset & size, now that we know them
759 chptr = headers + textrelLoc + 0x10;
762 elfSize += textrelSize;
765 if (sect[DATA].relocs > 0)
767 uint32_t datarelSize = CreateELFRelocationRecord(buf + elfSize, buf + dataLoc, DATA);
768 // Deposit offset & size, now that we know them
769 chptr = headers + datarelLoc + 0x10;
772 elfSize += datarelSize;
775 // Copy headers into the object
776 memcpy(buf + headerLoc, headers, headerSize);
778 // Finally, write out the object
779 unused = write(fd, buf, elfSize);
781 // Free allocated memory
788 else if (obj_format == XEX)
790 // Just write the object file
793 else if (obj_format == P56 || obj_format == LOD)
795 // Allocate 6MB object file image memory
796 uint8_t * buf = malloc(0x600000);
799 return error("cannot allocate object file memory (in P56/LOD mode)");
801 // objImage = buf; // Set global object image pointer
803 memset(buf, 0, 0x600000); // Clear allocated memory
805 // Iterate through DSP ram buffers
806 chptr = buf; // -> base of header
810 if (obj_format == LOD)
815 // Write all the things \o/
816 unused = write(fd, buf, chptr - buf);
821 else if (obj_format == RAW)
825 return error("cannot output absolute binary without a starting address (.org or command line)");
828 // Alloc memory for text + data construction.
829 tds = sect[TEXT].sloc + sect[DATA].sloc;
833 // Construct text and data segments; fixup relocatable longs;
834 // finally write the text + data
837 objImage = buf; // Set global object image pointer
839 for (i = TEXT; i <= DATA; i++)
841 for (cp = sect[i].sfcode; cp != NULL; cp = cp->chnext)
843 memcpy(p, cp->chptr, cp->ch_size);
848 if (MarkABSImage(buf, tds, sect[TEXT].sloc, TEXT) != OK) // Do TEXT relocation table
852 if (MarkABSImage(buf, tds, sect[TEXT].sloc, DATA) != OK) // Do DATA relocation table
857 // Write out the header + text & data + symbol table (if any)
858 unused = write(fd, buf, tds);
865 static void WriteLOD(void)
867 D_printf("_START %s 0000 0000 0000 RMAC %01i.%01i.%01i\n\n", firstfname, MAJOR, MINOR, PATCH);
869 for(DSP_ORG * l=&dsp_orgmap[0]; l<dsp_currentorg; l++)
871 if (l->end != l->start)
875 case ORG_P: D_printf("_DATA P %.4X\n", l->orgadr); break;
876 case ORG_X: D_printf("_DATA X %.4X\n", l->orgadr); break;
877 case ORG_Y: D_printf("_DATA Y %.4X\n", l->orgadr); break;
878 case ORG_L: D_printf("_DATA L %.4X\n", l->orgadr); break;
880 error("Internal error: unknown DSP56001 org'd section");
884 CHUNK * cp = l->chunk;
885 uint8_t * p_chunk = l->start;
886 uint8_t * p_chunk_end = p_chunk;
889 while (p_chunk_end != l->end)
891 if (l->end < (cp->chptr + cp->ch_size) && l->end > cp->chptr)
893 // If the end of the section is inside the current chunk, just dump everything and stop
894 p_chunk_end = l->end;
898 // 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
899 p_chunk_end = cp->chptr + cp->ch_size;
902 uint32_t count = (uint32_t)(p_chunk_end - p_chunk);
904 for(uint32_t i=0; i<count; i+=3)
908 D_printf("%.6X ", (((p_chunk[0] << 8) | p_chunk[1]) << 8) | p_chunk[2]);
912 D_printf("%.6X\n", (((p_chunk[0] << 8) | p_chunk[1]) << 8) | p_chunk[2]);
919 cp = cp->chnext; // Advance chunk
922 p_chunk = cp->chptr; // Set dump pointer to start of this chunk
930 // Dump the symbol table into the buf
933 D_printf("\n_END %.4X\n", dsp_orgmap[0].orgadr);
937 static void WriteP56(void)
939 for(DSP_ORG * l=&dsp_orgmap[0]; l<dsp_currentorg; l++)
941 if (l->end == l->start)
944 if ((l->memtype < ORG_P) || (l->memtype > ORG_L))
946 error("Internal error: unknown DSP56001 org'd section");
950 CHUNK * cp = l->chunk;
951 uint8_t * p_chunk = l->start;
952 uint8_t * p_chunk_end = p_chunk;
954 // Memory type (P, X, Y or L)
957 // Chunk start address (in DSP words)
960 // Chunk length (in DSP words)
961 // We'll fill this field after we write the chunk so we can calculate
962 // how long it is (so if the chunk is split into different CHUNKs we
963 // can deal with this during copy)
964 uint8_t * p_buf_len = chptr;
968 uint32_t chunk_size = 0;
970 while (p_chunk_end != l->end)
972 if (l->end < (cp->chptr + cp->ch_size) && l->end > cp->chptr)
974 // If the end of the section is inside the current chunk, just
975 // dump everything and stop
976 p_chunk_end = l->end;
980 // If the end of the section is not inside the current chunk,
981 // just dump everything from the current chunk and move on to
983 p_chunk_end = cp->chptr + cp->ch_size;
986 uint32_t current_chunk_size = p_chunk_end - p_chunk;
987 chunk_size += current_chunk_size;
988 memcpy(chptr, p_chunk, current_chunk_size);
989 chptr += current_chunk_size;
991 cp = cp->chnext; // Advance chunk
994 p_chunk = cp->chptr; // Set dump pointer to start of this chunk
997 // Now we can mark the chunk's length (DSP word size is 24-bits, so
998 // the byte count needs to be divided by 3)
999 SETBE24(p_buf_len, chunk_size / 3);