4 * (C) Copyright 1989-1995
12 * - change s_id from [NCPS] to pointer (comment)
14 * - add jflag and jfp for NoICE output
24 * The module lkdata contains the global variables
25 * and structures used in the linker aslink.
29 * Definitions for all Global Variables
32 char *_abs_ = { ". .ABS." };
34 int lkerr; /* Linker error flag
36 char *ip; /* Pointer into the REL file text line in ib[]
38 char ib[NINPUT]; /* REL file text line
40 char *rp; /* pointer into the LST file
43 char rb[NINPUT]; /* LST file text line being
46 int dflag; /* Debug information output flag
48 int oflag; /* Output file type flag
50 int mflag; /* Map output flag
52 int aflag; /* Overlapping area warning flag
54 int jflag; /* NoICE output flag
56 int xflag; /* Map file radix type flag
58 int pflag; /* print linker command file flag
60 int uflag; /* Listing relocation flag
62 int rflag; /* Extended linear address record flag.
64 int radix; /* current number conversion radix:
65 * 2 (binary), 8 (octal), 10 (decimal),
68 int line; /* current line number
70 int page; /* current page number
72 int lop; /* current line number on page
74 int pass; /* linker pass number
76 int rtcnt; /* count of elements in the
77 * rtval[] and rtflg[] arrays
79 addr_t rtval[NTXT]; /* data associated with relocation
81 int rtflg[NTXT]; /* indicates if rtval[] value is
82 * to be sent to the output file.
83 * (always set in this linker)
85 int hilo; /* REL file byte ordering
87 int gline; /* LST file relocation active
90 int gcntr; /* LST file relocation active
93 addr_t iram_size; /* internal ram size
97 * The structure lfile contains a pointer to a
98 * file specification string, the file type, and
99 * a link to the next lfile structure.
103 * struct lfile *f_flp; lfile link
104 * int f_type; File type
105 * char *f_idp; Pointer to file spec
108 struct lfile *filep; /* The pointers (lfile *) filep,
109 * (lfile *) cfp, and (FILE *) sfp
110 * are used in conjunction with
111 * the routine getline() to read
112 * asmlnk commands from
113 * (1) the standard input or
114 * (2) or a command file
115 * and to read the REL files
116 * sequentially as defined by the
117 * asmlnk input commands.
119 * The pointer *filep points to the
120 * beginning of a linked list of
123 struct lfile *cfp; /* The pointer *cfp points to the
124 * current lfile structure
126 struct lfile *startp;/* asmlnk startup file structure
128 struct lfile *linkp; /* pointer to first lfile structure
129 * containing an input REL file
132 struct lfile *lfp; /* pointer to current lfile structure
133 * being processed by parse()
135 FILE *ofp; /* Output file handle
138 FILE *mfp; /* Map output file handle
140 FILE *jfp; /* NoICE output file handle
142 FILE *rfp; /* File handle for output
143 * address relocated ASxxxx
146 FILE *sfp; /* The file handle sfp points to the
147 * currently open file
149 FILE *tfp; /* File handle for input
150 * ASxxxx listing file
152 FILE *dfp = NULL ; /*
153 * File handle for debug
154 * information output file
157 * The structures of head, area, areax, and sym are created
158 * as the REL files are read during the first pass of the
159 * linker. The struct head is created upon encountering a
160 * H directive in the REL file. The structure contains a
161 * link to a link file structure (struct lfile) which describes
162 * the file containing the H directive, the number of data/code
163 * areas contained in this header segment, the number of
164 * symbols referenced/defined in this header segment, a pointer
165 * to an array of pointers to areax structures (struct areax)
166 * created as each A directive is read, and a pointer to an
167 * array of pointers to symbol structures (struct sym) for
168 * all referenced/defined symbols. As H directives are read
169 * from the REL files a linked list of head structures is
170 * created by placing a link to the new head structure
171 * in the previous head structure.
175 * struct head *h_hp; Header link
176 * struct lfile *h_lfile; Associated file
177 * int h_narea; # of areas
178 * struct areax **a_list; Area list
179 * int h_nglob; # of global symbols
180 * struct sym **s_list; Global symbol list
181 * char m_id[NCPS]; Module name
184 struct head *headp; /* The pointer to the first
185 * head structure of a linked list
187 struct head *hp; /* Pointer to the current
192 * A structure area is created for each 'unique' data/code
193 * area definition found as the REL files are read. The
194 * struct area contains the name of the area, a flag byte
195 * which contains the area attributes (REL/CON/OVR/ABS),
196 * an area subtype (not used in this assembler), and the
197 * area base address and total size which will be filled
198 * in at the end of the first pass through the REL files.
199 * As A directives are read from the REL files a linked
200 * list of unique area structures is created by placing a
201 * link to the new area structure in the previous area structure.
205 * struct area *a_ap; Area link
206 * struct areax *a_axp; Area extension link
207 * addr_t a_addr; Beginning address of area
208 * addr_t a_size; Total size of the area
209 * char a_type; Area subtype
210 * char a_flag; Flag byte
211 * char a_id[NCPS]; Name
214 struct area *areap; /* The pointer to the first
215 * area structure of a linked list
217 struct area *ap; /* Pointer to the current
222 * An areax structure is created for every A directive found
223 * while reading the REL files. The struct areax contains a
224 * link to the 'unique' area structure referenced by the A
225 * directive and to the head structure this area segment is
226 * a part of. The size of this area segment as read from the
227 * A directive is placed in the areax structure. The beginning
228 * address of this segment will be filled in at the end of the
229 * first pass through the REL files. As A directives are read
230 * from the REL files a linked list of areax structures is
231 * created for each unique area. The final areax linked
232 * list has at its head the 'unique' area structure linked
233 * to the linked areax structures (one areax structure for
234 * each A directive for this area).
238 * struct areax *a_axp; Area extension link
239 * struct area *a_bap; Base area link
240 * struct head *a_bhp; Base header link
241 * addr_t a_addr; Beginning address of section
242 * addr_t a_size; Size of the area in section
245 struct areax *axp; /* Pointer to the current
250 * A sym structure is created for every unique symbol
251 * referenced/defined while reading the REL files. The
252 * struct sym contains the symbol's name, a flag value
253 * (not used in this linker), a symbol type denoting
254 * referenced/defined, and an address which is loaded
255 * with the relative address within the area in which
256 * the symbol was defined. The sym structure also
257 * contains a link to the area where the symbol was defined.
258 * The sym structures are linked into linked lists using
259 * the symbol link element.
263 * struct sym *s_sp; Symbol link
264 * struct areax *s_axp; Symbol area link
265 * char s_type; Symbol subtype
266 * char s_flag; Flag byte
267 * addr_t s_addr; Address
268 * char *s_id; Name (JLH)
271 struct sym *symhash[NHASH]; /* array of pointers to NHASH
272 * linked symbol lists
275 * The struct base contains a pointer to a
276 * base definition string and a link to the next
281 * struct base *b_base; Base link
282 * char *b_strp; String pointer
285 struct base *basep; /* The pointer to the first
288 struct base *bsp; /* Pointer to the current
293 * The struct globl contains a pointer to a
294 * global definition string and a link to the next
299 * struct globl *g_globl; Global link
300 * char *g_strp; String pointer
303 struct globl *globlp;/* The pointer to the first
306 struct globl *gsp; /* Pointer to the current
311 * A structure sdp is created for each 'unique' paged
312 * area definition found as the REL files are read.
313 * As P directives are read from the REL files a linked
314 * list of unique sdp structures is created by placing a
315 * link to the new sdp structure in the previous area structure.
319 * struct area *s_area; Paged Area link
320 * struct areax *s_areax; Paged Area Extension Link
321 * addr_t s_addr; Page address offset
324 struct sdp sdp; /* Base Page Structure */
327 * The structure rerr is loaded with the information
328 * required to report an error during the linking
329 * process. The structure contains an index value
330 * which selects the areax structure from the header
331 * areax structure list, a mode value which selects
332 * symbol or area relocation, the base address in the
333 * area section, an area/symbol list index value, and
334 * an area/symbol offset value.
338 * int aindex; Linking area
339 * int mode; Relocation mode
340 * addr_t rtbase; Base address in section
341 * int rindex; Area/Symbol reloaction index
342 * addr_t rval; Area/Symbol offset value
345 struct rerr rerr; /* Structure containing the
346 * linker error information
350 * The structure lbpath is created for each library
351 * path specification input by the -k option. The
352 * lbpath structures are linked into a list using
353 * the next link element.
356 * struct lbpath *next;
360 struct lbpath *lbphead; /* pointer to the first
361 * library path structure
365 * The structure lbname is created for all combinations of the
366 * library path specifications (input by the -k option) and the
367 * library file specifications (input by the -l option) that
368 * lead to an existing file. The element path points to
369 * the path string, element libfil points to the library
370 * file string, and the element libspc is the concatenation
371 * of the valid path and libfil strings.
373 * The lbpath structures are linked into a list
374 * using the next link element.
376 * Each library file contains a list of object files
377 * that are contained in the particular library. e.g.:
382 * Only one specification per line is allowed.
385 * struct lbname *next;
391 struct lbname *lbnhead; /* pointer to the first
392 * library name structure
396 * The function fndsym() searches through all combinations of the
397 * library path specifications (input by the -k option) and the
398 * library file specifications (input by the -l option) that
399 * lead to an existing file for a symbol definition.
401 * The structure lbfile is created for the first library
402 * object file which contains the definition for the
403 * specified undefined symbol.
405 * The element libspc points to the library file path specification
406 * and element relfil points to the object file specification string.
407 * The element filspc is the complete path/file specification for
408 * the library file to be imported into the linker. The
409 * file specicifation may be formed in one of two ways:
411 * (1) If the library file contained an absolute
412 * path/file specification then this becomes filspc.
415 * (2) If the library file contains a relative path/file
416 * specification then the concatenation of the path
417 * and this file specification becomes filspc.
420 * The lbpath structures are linked into a list
421 * using the next link element.
424 * struct lbfile *next;
430 struct lbfile *lbfhead; /* pointer to the first
431 * library file structure
435 * array of character types, one per
439 /*NUL*/ ILL, ILL, ILL, ILL, ILL, ILL, ILL, ILL,
440 /*BS*/ ILL, SPACE, ILL, ILL, SPACE, ILL, ILL, ILL,
441 /*DLE*/ ILL, ILL, ILL, ILL, ILL, ILL, ILL, ILL,
442 /*CAN*/ ILL, ILL, ILL, ILL, ILL, ILL, ILL, ILL,
443 /*SPC*/ SPACE, ETC, ETC, ETC, LETTER, BINOP, BINOP, ETC,
444 /*(*/ ETC, ETC, BINOP, BINOP, ETC, BINOP, LETTER, BINOP,
445 /*0*/ DGT2, DGT2, DGT8, DGT8, DGT8, DGT8, DGT8, DGT8,
446 /*8*/ DGT10, DGT10, ETC, ETC, BINOP, ETC, BINOP, ETC,
447 /*@*/ ETC, LTR16, LTR16, LTR16, LTR16, LTR16, LTR16, LETTER,
448 /*H*/ LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER,
449 /*P*/ LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER,
450 /*X*/ LETTER, LETTER, LETTER, ETC, ETC, ETC, BINOP, LETTER,
451 /*`*/ ETC, LTR16, LTR16, LTR16, LTR16, LTR16, LTR16, LETTER,
452 /*h*/ LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER,
453 /*p*/ LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER,
454 /*x*/ LETTER, LETTER, LETTER, ETC, BINOP, ETC, ETC, ETC
458 * an array of characters which
459 * perform the case translation function
464 /*NUL*/ '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
465 /*BS*/ '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
466 /*DLE*/ '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
467 /*CAN*/ '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
468 /*SPC*/ '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
469 /*(*/ '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
470 /*0*/ '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
471 /*8*/ '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
472 /*@*/ '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
473 /*H*/ '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
474 /*P*/ '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
475 /*X*/ '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
476 /*`*/ '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
477 /*h*/ '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
478 /*p*/ '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
479 /*x*/ '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177'