4 * (C) Copyright 1989-1995
12 * - add proto for StoreString
13 * - change s_id from [NCPS] to pointer
16 * - add R_J11 for 8051 assembler
18 * - add jflag and jfp for NoICE output
20 * - add memory space flags to a_flag for 8051
23 #define VERSION "V01.70 + NoICE + SDCC Feb 1999"
26 * Case Sensitivity Flag
28 #define CASE_SENSITIVE 1
32 * The module asmlnk.h contains the definitions for constants,
33 * structures, global variables, and LKxxxx functions
34 * contained in the LKxxxx.c files.
57 /* DECUS C void definition */
58 /* File/extension seperator */
65 /* PDOS C void definition */
66 /* File/extension seperator */
73 /* Default void definition */
74 /* File/extension seperator */
86 #ifndef PATH_MAX /* POSIX, but not required */
87 #if defined(__BORLANDC__) || defined(_MSC_VER)
89 #define PATH_MAX _MAX_PATH
91 #define PATH_MAX 255 /* define a reasonable value */
96 * This file defines the format of the
97 * relocatable binary file.
100 #define NCPS 80 /* characters per symbol (JLH: change from 8) */
101 #define NDATA 16 /* actual data */
102 #define NINPUT PATH_MAX /* Input buffer size */
103 #define NHASH 64 /* Buckets in hash table */
104 #define HMASK 077 /* Hash mask */
105 #define NLPP 60 /* Lines per page */
106 #define NTXT 16 /* T values */
109 * The "R_" relocation constants define values used in
110 * generating the assembler relocation output data for
111 * areas, symbols, and code.
117 * +-----+-----+-----+-----+-----+-----+-----+-----+
118 * | MSB | PAGn| PAG0| USGN| BYT2| PCR | SYM | BYT |
119 * +-----+-----+-----+-----+-----+-----+-----+-----+
122 #define R_WORD 0x00 /* 16 bit */
123 #define R_BYTE 0x01 /* 8 bit */
125 #define R_AREA 0x00 /* Base type */
128 #define R_NORM 0x00 /* PC adjust */
131 #define R_BYT1 0x00 /* Byte count for R_BYTE = 1 */
132 #define R_BYT2 0x08 /* Byte count for R_BYTE = 2 */
134 #define R_SGND 0x00 /* Signed Byte */
135 #define R_USGN 0x10 /* Unsigned Byte */
137 #define R_NOPAG 0x00 /* Page Mode */
138 #define R_PAG0 0x20 /* Page '0' */
139 #define R_PAG 0x40 /* Page 'nnn' */
141 #define R_LSB 0x00 /* low byte */
142 #define R_MSB 0x80 /* high byte */
144 #define R_BYT3 0x100 /* if R_BYTE is set, this is a
145 * 3 byte address, of which
146 * the linker must select one byte.
148 #define R_HIB 0x200 /* If R_BYTE & R_BYT3 are set, linker
149 * will select byte 3 of the relocated
153 #define R_J11 (R_WORD|R_BYT2) /* JLH: 11 bit JMP and CALL (8051) */
154 #define R_J19 (R_WORD|R_BYT2|R_MSB) /* 19 bit JMP/CALL (DS80C390) */
155 #define R_C24 (R_WORD|R_BYT1|R_MSB) /* 24 bit address (DS80C390) */
156 #define R_J19_MASK (R_BYTE|R_BYT2|R_MSB)
158 #define IS_R_J19(x) (((x) & R_J19_MASK) == R_J19)
159 #define IS_R_J11(x) (((x) & R_J19_MASK) == R_J11)
160 #define IS_C24(x) (((x) & R_J19_MASK) == R_C24)
162 #define R_ESCAPE_MASK 0xf0 /* Used to escape relocation modes
163 * greater than 0xff in the .rel
168 * Global symbol types.
170 #define S_REF 1 /* referenced */
171 #define S_DEF 2 /* defined */
176 #define A_CON 0000 /* concatenate */
177 #define A_OVR 0004 /* overlay */
178 #define A_REL 0000 /* relocatable */
179 #define A_ABS 0010 /* absolute */
180 #define A_NOPAG 0000 /* non-paged */
181 #define A_PAG 0020 /* paged */
183 /* Additional flags for 8051 address spaces */
184 #define A_DATA 0000 /* data space (default)*/
185 #define A_CODE 0040 /* code space */
186 #define A_XDATA 0100 /* external data space */
187 #define A_BIT 0200 /* bit addressable space */
192 #define F_STD 1 /* stdin */
193 #define F_LNK 2 /* File.lnk */
194 #define F_REL 3 /* File.rel */
197 * General assembler address type
199 typedef unsigned int Addr_T;
202 * The structures of head, area, areax, and sym are created
203 * as the REL files are read during the first pass of the
204 * linker. The struct head is created upon encountering a
205 * H directive in the REL file. The structure contains a
206 * link to a link file structure (struct lfile) which describes
207 * the file containing the H directive, the number of data/code
208 * areas contained in this header segment, the number of
209 * symbols referenced/defined in this header segment, a pointer
210 * to an array of pointers to areax structures (struct areax)
211 * created as each A directive is read, and a pointer to an
212 * array of pointers to symbol structures (struct sym) for
213 * all referenced/defined symbols. As H directives are read
214 * from the REL files a linked list of head structures is
215 * created by placing a link to the new head structure
216 * in the previous head structure.
220 struct head *h_hp; /* Header link */
221 struct lfile *h_lfile;/* Associated file */
222 int h_narea; /* # of areas */
223 struct areax **a_list; /* Area list */
224 int h_nglob; /* # of global symbols */
225 struct sym **s_list; /* Globle symbol list */
226 char m_id[NCPS]; /* Module name */
230 * A structure area is created for each 'unique' data/code
231 * area definition found as the REL files are read. The
232 * struct area contains the name of the area, a flag byte
233 * which contains the area attributes (REL/CON/OVR/ABS),
234 * an area subtype (not used in this assembler), and the
235 * area base address and total size which will be filled
236 * in at the end of the first pass through the REL files.
237 * As A directives are read from the REL files a linked
238 * list of unique area structures is created by placing a
239 * link to the new area structure in the previous area structure.
243 struct area *a_ap; /* Area link */
244 struct areax *a_axp; /* Area extension link */
245 Addr_T a_addr; /* Beginning address of area */
246 Addr_T a_size; /* Total size of the area */
247 char a_type; /* Area subtype */
248 char a_flag; /* Flag byte */
249 char a_id[NCPS]; /* Name */
253 * An areax structure is created for every A directive found
254 * while reading the REL files. The struct areax contains a
255 * link to the 'unique' area structure referenced by the A
256 * directive and to the head structure this area segment is
257 * a part of. The size of this area segment as read from the
258 * A directive is placed in the areax structure. The beginning
259 * address of this segment will be filled in at the end of the
260 * first pass through the REL files. As A directives are read
261 * from the REL files a linked list of areax structures is
262 * created for each unique area. The final areax linked
263 * list has at its head the 'unique' area structure linked
264 * to the linked areax structures (one areax structure for
265 * each A directive for this area).
269 struct areax *a_axp; /* Area extension link */
270 struct area *a_bap; /* Base area link */
271 struct head *a_bhp; /* Base header link */
272 Addr_T a_addr; /* Beginning address of section */
273 Addr_T a_size; /* Size of the area in section */
277 * A sym structure is created for every unique symbol
278 * referenced/defined while reading the REL files. The
279 * struct sym contains the symbol's name, a flag value
280 * (not used in this linker), a symbol type denoting
281 * referenced/defined, and an address which is loaded
282 * with the relative address within the area in which
283 * the symbol was defined. The sym structure also
284 * contains a link to the area where the symbol was defined.
285 * The sym structures are linked into linked lists using
286 * the symbol link element.
290 struct sym *s_sp; /* Symbol link */
291 struct areax *s_axp; /* Symbol area link */
292 char s_type; /* Symbol subtype */
293 char s_flag; /* Flag byte */
294 Addr_T s_addr; /* Address */
295 char *s_id; /* Name: JLH change from [NCPS] */
299 * The structure lfile contains a pointer to a
300 * file specification string, the file type, and
301 * a link to the next lfile structure.
305 struct lfile *f_flp; /* lfile link */
306 int f_type; /* File type */
307 char *f_idp; /* Pointer to file spec */
311 * The struct base contains a pointer to a
312 * base definition string and a link to the next
317 struct base *b_base; /* Base link */
318 char *b_strp; /* String pointer */
322 * The struct globl contains a pointer to a
323 * global definition string and a link to the next
328 struct globl *g_globl; /* Global link */
329 char *g_strp; /* String pointer */
333 * A structure sdp is created for each 'unique' paged
334 * area definition found as the REL files are read.
335 * As P directives are read from the REL files a linked
336 * list of unique sdp structures is created by placing a
337 * link to the new sdp structure in the previous area structure.
341 struct area *s_area; /* Paged Area link */
342 struct areax *s_areax; /* Paged Area Extension Link */
343 Addr_T s_addr; /* Page address offset */
347 * The structure rerr is loaded with the information
348 * required to report an error during the linking
349 * process. The structure contains an index value
350 * which selects the areax structure from the header
351 * areax structure list, a mode value which selects
352 * symbol or area relocation, the base address in the
353 * area section, an area/symbol list index value, and
354 * an area/symbol offset value.
358 int aindex; /* Linking area */
359 int mode; /* Relocation mode */
360 Addr_T rtbase; /* Base address in section */
361 int rindex; /* Area/Symbol reloaction index */
362 Addr_T rval; /* Area/Symbol offset value */
366 * The structure lbpath is created for each library
367 * path specification input by the -k option. The
368 * lbpath structures are linked into a list using
369 * the next link element.
377 * The structure lbname is created for all combinations of the
378 * library path specifications (input by the -k option) and the
379 * library file specifications (input by the -l option) that
380 * lead to an existing file. The element path points to
381 * the path string, element libfil points to the library
382 * file string, and the element libspc is the concatenation
383 * of the valid path and libfil strings.
385 * The lbpath structures are linked into a list
386 * using the next link element.
388 * Each library file contains a list of object files
389 * that are contained in the particular library. e.g.:
394 * Only one specification per line is allowed.
404 * The function fndsym() searches through all combinations of the
405 * library path specifications (input by the -k option) and the
406 * library file specifications (input by the -l option) that
407 * lead to an existing file for a symbol definition.
409 * The structure lbfile is created for the first library
410 * object file which contains the definition for the
411 * specified undefined symbol.
413 * The element libspc points to the library file path specification
414 * and element relfil points to the object file specification string.
415 * The element filspc is the complete path/file specification for
416 * the library file to be imported into the linker. The
417 * file specicifation may be formed in one of two ways:
419 * (1) If the library file contained an absolute
420 * path/file specification then this becomes filspc.
423 * (2) If the library file contains a relative path/file
424 * specification then the concatenation of the path
425 * and this file specification becomes filspc.
428 * The lbpath structures are linked into a list
429 * using the next link element.
439 * External Definitions for all Global Variables
442 extern char *_abs_; /* = { ". .ABS." };
444 extern int lkerr; /* ASLink error flag
446 extern char *ip; /* pointer into the REL file
449 extern char ib[NINPUT]; /* REL file text line
451 extern char *rp; /* pointer into the LST file
454 extern char rb[NINPUT]; /* LST file text line being
457 extern unsigned char ctype[]; /* array of character types, one per
462 * Character Type Definitions
475 #define DGT2 DIGIT|RAD16|RAD10|RAD8|RAD2
476 #define DGT8 DIGIT|RAD16|RAD10|RAD8
477 #define DGT10 DIGIT|RAD16|RAD10
478 #define LTR16 LETTER|RAD16
482 extern char ccase[]; /* an array of characters which
483 * perform the case translation function
487 extern struct lfile *filep; /* The pointers (lfile *) filep,
488 * (lfile *) cfp, and (FILE *) sfp
489 * are used in conjunction with
490 * the routine getline() to read
491 * asmlnk commands from
492 * (1) the standard input or
493 * (2) or a command file
494 * and to read the REL files
495 * sequentially as defined by the
496 * asmlnk input commands.
498 * The pointer *filep points to the
499 * beginning of a linked list of
502 extern struct lfile *cfp; /* The pointer *cfp points to the
503 * current lfile structure
505 extern struct lfile *startp;/* asmlnk startup file structure
507 extern struct lfile *linkp; /* pointer to first lfile structure
508 * containing an input REL file
511 extern struct lfile *lfp; /* pointer to current lfile structure
512 * being processed by parse()
514 extern struct head *headp; /* The pointer to the first
515 * head structure of a linked list
517 extern struct head *hp; /* Pointer to the current
520 extern struct area *areap; /* The pointer to the first
521 * area structure of a linked list
523 extern struct area *ap; /* Pointer to the current
526 extern struct areax *axp; /* Pointer to the current
529 extern struct sym *symhash[NHASH]; /* array of pointers to NHASH
530 * linked symbol lists
532 extern struct base *basep; /* The pointer to the first
535 extern struct base *bsp; /* Pointer to the current
538 extern struct globl *globlp;/* The pointer to the first
541 extern struct globl *gsp; /* Pointer to the current
544 extern struct sdp sdp; /* Base Paged structure
546 extern struct rerr rerr; /* Structure containing the
547 * linker error information
549 extern FILE *ofp; /* Linker Output file handle
551 extern FILE *mfp; /* Map output file handle
553 extern FILE *jfp; /* NoICE output file handle
555 extern FILE *rfp; /* File handle for output
556 * address relocated ASxxxx
559 extern FILE *sfp; /* The file handle sfp points to the
560 * currently open file
562 extern FILE *tfp; /* File handle for input
563 * ASxxxx listing file
565 extern FILE *dfp; /* File handle for debug info output
567 extern int dflag; /* Output debug information flag
569 extern int oflag; /* Output file type flag
571 extern int mflag; /* Map output flag
573 extern int sflag; /* JCF: Memory usage output flag
575 extern int jflag; /* NoICE output flag
577 extern int xflag; /* Map file radix type flag
579 extern int pflag; /* print linker command file flag
581 extern int uflag; /* Listing relocation flag
583 extern int rflag; /* Extended linear address record flag.
585 extern int radix; /* current number conversion radix:
586 * 2 (binary), 8 (octal), 10 (decimal),
589 extern int line; /* current line number
591 extern int page; /* current page number
593 extern int lop; /* current line number on page
595 extern int pass; /* linker pass number
597 extern int rtcnt; /* count of elements in the
598 * rtval[] and rtflg[] arrays
600 extern Addr_T rtval[]; /* data associated with relocation
602 extern int rtflg[]; /* indicates if rtval[] value is
603 * to be sent to the output file.
604 * (always set in this linker)
606 extern int hilo; /* REL file byte ordering
608 extern int gline; /* LST file relocation active
611 extern int gcntr; /* LST file relocation active
614 extern struct lbpath *lbphead; /* pointer to the first
615 * library path structure
617 extern struct lbname *lbnhead; /* pointer to the first
618 * library name structure
620 extern struct lbfile *lbfhead; /* pointer to the first
621 * library file structure
623 extern Addr_T iram_size; /* internal ram size
625 extern long xram_size; /* external ram size
627 extern long code_size; /* code size
631 /* C Library function definitions */
632 /* for reference only
635 extern char * fgets();
636 extern FILE * fopen();
637 extern int fprintf();
639 extern VOID * malloc();
641 extern char * strcpy();
643 extern char * strncpy();
646 /* Program function definitions */
649 extern FILE * afile();
650 extern VOID bassav();
651 extern VOID gblsav();
652 extern VOID iramsav();
653 extern VOID xramsav();
654 extern VOID codesav();
655 extern VOID iramcheck();
656 extern VOID link_main();
657 extern VOID lkexit();
661 extern VOID setbas();
662 extern VOID setgbl();
664 extern VOID copyfile();
667 extern char endline();
669 extern VOID getfid();
671 extern VOID getSid();
672 extern int getline();
678 extern VOID chop_crlf();
681 extern VOID lkparea();
682 extern VOID lnkarea();
683 extern VOID lnksect();
684 extern VOID newarea();
687 extern VOID module();
688 extern VOID newhead();
692 extern struct sym * lkpsym();
694 extern struct sym * newsym();
695 extern VOID symdef();
697 extern VOID syminit();
698 extern VOID symmod();
699 extern Addr_T symval();
703 extern Addr_T eval();
704 extern Addr_T expr();
706 extern Addr_T term();
710 extern VOID lkulist();
711 extern VOID lkalist();
712 extern VOID lkglist();
713 extern VOID lstarea();
714 extern VOID newpag();
718 extern Addr_T adb_b();
719 extern Addr_T adb_hi();
720 extern Addr_T adb_lo();
721 extern Addr_T adb_24_hi(Addr_T v, int i);
722 extern Addr_T adb_24_mid(Addr_T v, int i);
723 extern Addr_T adb_24_lo(Addr_T v, int i);
724 extern Addr_T adw_w();
725 extern Addr_T adw_24(Addr_T, int);
726 extern Addr_T adw_hi();
727 extern Addr_T adw_lo();
728 extern Addr_T evword();
734 extern VOID relerr();
735 extern char * errmsg[];
736 extern VOID errdmp();
737 extern VOID relerp();
738 extern VOID erpdmp();
739 extern VOID prntval();
740 extern int lastExtendedAddress;
743 extern VOID addfile();
744 extern VOID addlib();
745 extern VOID addpath();
747 extern VOID library();
748 extern VOID loadfile();
749 extern VOID search();
756 extern VOID ihxEntendedLinearAddress(Addr_T);
758 extern char *StoreString( char *str );
761 extern void DefineNoICE( char *name, Addr_T value, int page );
764 extern int summary(struct area * xp);
766 /* JCF: lkaomf51.c */
767 extern void SaveLinkedFilePath(char * filepath);
768 extern void CreateAOMF51(void);