4 * (C) Copyright 1989-1995
12 * - change s_id from [NCPS] to pointer (comment)
14 * - add jflag and jfp for NoICE output
19 #if !defined(_MSC_VER)
26 * The module lkdata contains the global variables
27 * and structures used in the linker aslink.
31 * Definitions for all Global Variables
34 char *_abs_ = { ". .ABS." };
36 int lkerr; /* Linker error flag
38 char *ip; /* Pointer into the REL file text line in ib[]
40 char ib[NINPUT]; /* REL file text line
42 char *rp; /* pointer into the LST file
45 char rb[NINPUT]; /* LST file text line being
48 int dflag; /* Debug information output flag
50 int oflag; /* Output file type flag
52 int mflag; /* Map output flag
54 int aflag; /* Overlapping area warning flag
56 int jflag; /* NoICE output flag
58 int xflag; /* Map file radix type flag
60 int pflag; /* print linker command file flag
62 int uflag; /* Listing relocation flag
64 int rflag; /* Extended linear address record flag.
66 int radix; /* current number conversion radix:
67 * 2 (binary), 8 (octal), 10 (decimal),
70 int line; /* current line number
72 int page; /* current page number
74 int lop; /* current line number on page
76 int pass; /* linker pass number
78 int rtcnt; /* count of elements in the
79 * rtval[] and rtflg[] arrays
81 addr_t rtval[NTXT]; /* data associated with relocation
83 int rtflg[NTXT]; /* indicates if rtval[] value is
84 * to be sent to the output file.
85 * (always set in this linker)
87 int hilo; /* REL file byte ordering
89 int gline; /* LST file relocation active
92 int gcntr; /* LST file relocation active
95 addr_t iram_size; /* internal ram size
99 * The structure lfile contains a pointer to a
100 * file specification string, the file type, and
101 * a link to the next lfile structure.
105 * struct lfile *f_flp; lfile link
106 * int f_type; File type
107 * char *f_idp; Pointer to file spec
110 struct lfile *filep; /* The pointers (lfile *) filep,
111 * (lfile *) cfp, and (FILE *) sfp
112 * are used in conjunction with
113 * the routine getline() to read
114 * asmlnk commands from
115 * (1) the standard input or
116 * (2) or a command file
117 * and to read the REL files
118 * sequentially as defined by the
119 * asmlnk input commands.
121 * The pointer *filep points to the
122 * beginning of a linked list of
125 struct lfile *cfp; /* The pointer *cfp points to the
126 * current lfile structure
128 struct lfile *startp;/* asmlnk startup file structure
130 struct lfile *linkp; /* pointer to first lfile structure
131 * containing an input REL file
134 struct lfile *lfp; /* pointer to current lfile structure
135 * being processed by parse()
137 FILE *ofp; /* Output file handle
140 FILE *mfp; /* Map output file handle
142 FILE *jfp; /* NoICE output file handle
144 FILE *rfp; /* File handle for output
145 * address relocated ASxxxx
148 FILE *sfp; /* The file handle sfp points to the
149 * currently open file
151 FILE *tfp; /* File handle for input
152 * ASxxxx listing file
154 FILE *dfp = NULL ; /*
155 * File handle for debug
156 * information output file
159 * The structures of head, area, areax, and sym are created
160 * as the REL files are read during the first pass of the
161 * linker. The struct head is created upon encountering a
162 * H directive in the REL file. The structure contains a
163 * link to a link file structure (struct lfile) which describes
164 * the file containing the H directive, the number of data/code
165 * areas contained in this header segment, the number of
166 * symbols referenced/defined in this header segment, a pointer
167 * to an array of pointers to areax structures (struct areax)
168 * created as each A directive is read, and a pointer to an
169 * array of pointers to symbol structures (struct sym) for
170 * all referenced/defined symbols. As H directives are read
171 * from the REL files a linked list of head structures is
172 * created by placing a link to the new head structure
173 * in the previous head structure.
177 * struct head *h_hp; Header link
178 * struct lfile *h_lfile; Associated file
179 * int h_narea; # of areas
180 * struct areax **a_list; Area list
181 * int h_nglob; # of global symbols
182 * struct sym **s_list; Global symbol list
183 * char m_id[NCPS]; Module name
186 struct head *headp; /* The pointer to the first
187 * head structure of a linked list
189 struct head *hp; /* Pointer to the current
194 * A structure area is created for each 'unique' data/code
195 * area definition found as the REL files are read. The
196 * struct area contains the name of the area, a flag byte
197 * which contains the area attributes (REL/CON/OVR/ABS),
198 * an area subtype (not used in this assembler), and the
199 * area base address and total size which will be filled
200 * in at the end of the first pass through the REL files.
201 * As A directives are read from the REL files a linked
202 * list of unique area structures is created by placing a
203 * link to the new area structure in the previous area structure.
207 * struct area *a_ap; Area link
208 * struct areax *a_axp; Area extension link
209 * addr_t a_addr; Beginning address of area
210 * addr_t a_size; Total size of the area
211 * char a_type; Area subtype
212 * char a_flag; Flag byte
213 * char a_id[NCPS]; Name
216 struct area *areap; /* The pointer to the first
217 * area structure of a linked list
219 struct area *ap; /* Pointer to the current
224 * An areax structure is created for every A directive found
225 * while reading the REL files. The struct areax contains a
226 * link to the 'unique' area structure referenced by the A
227 * directive and to the head structure this area segment is
228 * a part of. The size of this area segment as read from the
229 * A directive is placed in the areax structure. The beginning
230 * address of this segment will be filled in at the end of the
231 * first pass through the REL files. As A directives are read
232 * from the REL files a linked list of areax structures is
233 * created for each unique area. The final areax linked
234 * list has at its head the 'unique' area structure linked
235 * to the linked areax structures (one areax structure for
236 * each A directive for this area).
240 * struct areax *a_axp; Area extension link
241 * struct area *a_bap; Base area link
242 * struct head *a_bhp; Base header link
243 * addr_t a_addr; Beginning address of section
244 * addr_t a_size; Size of the area in section
247 struct areax *axp; /* Pointer to the current
252 * A sym structure is created for every unique symbol
253 * referenced/defined while reading the REL files. The
254 * struct sym contains the symbol's name, a flag value
255 * (not used in this linker), a symbol type denoting
256 * referenced/defined, and an address which is loaded
257 * with the relative address within the area in which
258 * the symbol was defined. The sym structure also
259 * contains a link to the area where the symbol was defined.
260 * The sym structures are linked into linked lists using
261 * the symbol link element.
265 * struct sym *s_sp; Symbol link
266 * struct areax *s_axp; Symbol area link
267 * char s_type; Symbol subtype
268 * char s_flag; Flag byte
269 * addr_t s_addr; Address
270 * char *s_id; Name (JLH)
273 struct sym *symhash[NHASH]; /* array of pointers to NHASH
274 * linked symbol lists
277 * The struct base contains a pointer to a
278 * base definition string and a link to the next
283 * struct base *b_base; Base link
284 * char *b_strp; String pointer
287 struct base *basep; /* The pointer to the first
290 struct base *bsp; /* Pointer to the current
295 * The struct globl contains a pointer to a
296 * global definition string and a link to the next
301 * struct globl *g_globl; Global link
302 * char *g_strp; String pointer
305 struct globl *globlp;/* The pointer to the first
308 struct globl *gsp; /* Pointer to the current
313 * A structure sdp is created for each 'unique' paged
314 * area definition found as the REL files are read.
315 * As P directives are read from the REL files a linked
316 * list of unique sdp structures is created by placing a
317 * link to the new sdp structure in the previous area structure.
321 * struct area *s_area; Paged Area link
322 * struct areax *s_areax; Paged Area Extension Link
323 * addr_t s_addr; Page address offset
326 struct sdp sdp; /* Base Page Structure */
329 * The structure rerr is loaded with the information
330 * required to report an error during the linking
331 * process. The structure contains an index value
332 * which selects the areax structure from the header
333 * areax structure list, a mode value which selects
334 * symbol or area relocation, the base address in the
335 * area section, an area/symbol list index value, and
336 * an area/symbol offset value.
340 * int aindex; Linking area
341 * int mode; Relocation mode
342 * addr_t rtbase; Base address in section
343 * int rindex; Area/Symbol reloaction index
344 * addr_t rval; Area/Symbol offset value
347 struct rerr rerr; /* Structure containing the
348 * linker error information
352 * The structure lbpath is created for each library
353 * path specification input by the -k option. The
354 * lbpath structures are linked into a list using
355 * the next link element.
358 * struct lbpath *next;
362 struct lbpath *lbphead; /* pointer to the first
363 * library path structure
367 * The structure lbname is created for all combinations of the
368 * library path specifications (input by the -k option) and the
369 * library file specifications (input by the -l option) that
370 * lead to an existing file. The element path points to
371 * the path string, element libfil points to the library
372 * file string, and the element libspc is the concatenation
373 * of the valid path and libfil strings.
375 * The lbpath structures are linked into a list
376 * using the next link element.
378 * Each library file contains a list of object files
379 * that are contained in the particular library. e.g.:
384 * Only one specification per line is allowed.
387 * struct lbname *next;
393 struct lbname *lbnhead; /* pointer to the first
394 * library name structure
398 * The function fndsym() searches through all combinations of the
399 * library path specifications (input by the -k option) and the
400 * library file specifications (input by the -l option) that
401 * lead to an existing file for a symbol definition.
403 * The structure lbfile is created for the first library
404 * object file which contains the definition for the
405 * specified undefined symbol.
407 * The element libspc points to the library file path specification
408 * and element relfil points to the object file specification string.
409 * The element filspc is the complete path/file specification for
410 * the library file to be imported into the linker. The
411 * file specicifation may be formed in one of two ways:
413 * (1) If the library file contained an absolute
414 * path/file specification then this becomes filspc.
417 * (2) If the library file contains a relative path/file
418 * specification then the concatenation of the path
419 * and this file specification becomes filspc.
422 * The lbpath structures are linked into a list
423 * using the next link element.
426 * struct lbfile *next;
432 struct lbfile *lbfhead; /* pointer to the first
433 * library file structure
437 * array of character types, one per
441 /*NUL*/ ILL, ILL, ILL, ILL, ILL, ILL, ILL, ILL,
442 /*BS*/ ILL, SPACE, ILL, ILL, SPACE, ILL, ILL, ILL,
443 /*DLE*/ ILL, ILL, ILL, ILL, ILL, ILL, ILL, ILL,
444 /*CAN*/ ILL, ILL, ILL, ILL, ILL, ILL, ILL, ILL,
445 /*SPC*/ SPACE, ETC, ETC, ETC, LETTER, BINOP, BINOP, ETC,
446 /*(*/ ETC, ETC, BINOP, BINOP, ETC, BINOP, LETTER, BINOP,
447 /*0*/ DGT2, DGT2, DGT8, DGT8, DGT8, DGT8, DGT8, DGT8,
448 /*8*/ DGT10, DGT10, ETC, ETC, BINOP, ETC, BINOP, ETC,
449 /*@*/ ETC, LTR16, LTR16, LTR16, LTR16, LTR16, LTR16, LETTER,
450 /*H*/ LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER,
451 /*P*/ LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER,
452 /*X*/ LETTER, LETTER, LETTER, ETC, ETC, ETC, BINOP, LETTER,
453 /*`*/ ETC, LTR16, LTR16, LTR16, LTR16, LTR16, LTR16, LETTER,
454 /*h*/ LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER,
455 /*p*/ LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER,
456 /*x*/ LETTER, LETTER, LETTER, ETC, BINOP, ETC, ETC, ETC
460 * an array of characters which
461 * perform the case translation function
466 /*NUL*/ '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
467 /*BS*/ '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
468 /*DLE*/ '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
469 /*CAN*/ '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
470 /*SPC*/ '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
471 /*(*/ '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
472 /*0*/ '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
473 /*8*/ '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
474 /*@*/ '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
475 /*H*/ '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
476 /*P*/ '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
477 /*X*/ '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
478 /*`*/ '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
479 /*h*/ '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
480 /*p*/ '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
481 /*x*/ '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177'